diff options
Diffstat (limited to 'drivers')
99 files changed, 14174 insertions, 4714 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index 6f0d90d..32d0b87 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -64,6 +64,7 @@ struct multipath { spinlock_t lock; const char *hw_handler_name; + char *hw_handler_params; unsigned nr_priority_groups; struct list_head priority_groups; unsigned pg_init_required; /* pg_init needs calling? */ @@ -219,6 +220,7 @@ static void free_multipath(struct multipath *m) } kfree(m->hw_handler_name); + kfree(m->hw_handler_params); mempool_destroy(m->mpio_pool); kfree(m); } @@ -615,6 +617,17 @@ static struct pgpath *parse_path(struct arg_set *as, struct path_selector *ps, dm_put_device(ti, p->path.dev); goto bad; } + + if (m->hw_handler_params) { + r = scsi_dh_set_params(q, m->hw_handler_params); + if (r < 0) { + ti->error = "unable to set hardware " + "handler parameters"; + scsi_dh_detach(q); + dm_put_device(ti, p->path.dev); + goto bad; + } + } } r = ps->type->add_path(ps, &p->path, as->argc, as->argv, &ti->error); @@ -705,6 +718,7 @@ static struct priority_group *parse_priority_group(struct arg_set *as, static int parse_hw_handler(struct arg_set *as, struct multipath *m) { unsigned hw_argc; + int ret; struct dm_target *ti = m->ti; static struct param _params[] = { @@ -726,17 +740,33 @@ static int parse_hw_handler(struct arg_set *as, struct multipath *m) request_module("scsi_dh_%s", m->hw_handler_name); if (scsi_dh_handler_exist(m->hw_handler_name) == 0) { ti->error = "unknown hardware handler type"; - kfree(m->hw_handler_name); - m->hw_handler_name = NULL; - return -EINVAL; + ret = -EINVAL; + goto fail; } - if (hw_argc > 1) - DMWARN("Ignoring user-specified arguments for " - "hardware handler \"%s\"", m->hw_handler_name); + if (hw_argc > 1) { + char *p; + int i, j, len = 4; + + for (i = 0; i <= hw_argc - 2; i++) + len += strlen(as->argv[i]) + 1; + p = m->hw_handler_params = kzalloc(len, GFP_KERNEL); + if (!p) { + ti->error = "memory allocation failed"; + ret = -ENOMEM; + goto fail; + } + j = sprintf(p, "%d", hw_argc - 1); + for (i = 0, p+=j+1; i <= hw_argc - 2; i++, p+=j+1) + j = sprintf(p, "%s", as->argv[i]); + } consume(as, hw_argc - 1); return 0; +fail: + kfree(m->hw_handler_name); + m->hw_handler_name = NULL; + return ret; } static int parse_features(struct arg_set *as, struct multipath *m) diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c index 5d0ba4f..76fa2ee 100644 --- a/drivers/message/fusion/mptbase.c +++ b/drivers/message/fusion/mptbase.c @@ -1015,9 +1015,9 @@ mpt_add_sge_64bit(void *pAddr, u32 flagslength, dma_addr_t dma_addr) { SGESimple64_t *pSge = (SGESimple64_t *) pAddr; pSge->Address.Low = cpu_to_le32 - (lower_32_bits((unsigned long)(dma_addr))); + (lower_32_bits(dma_addr)); pSge->Address.High = cpu_to_le32 - (upper_32_bits((unsigned long)dma_addr)); + (upper_32_bits(dma_addr)); pSge->FlagsLength = cpu_to_le32 ((flagslength | MPT_SGE_FLAGS_64_BIT_ADDRESSING)); } @@ -1038,8 +1038,8 @@ mpt_add_sge_64bit_1078(void *pAddr, u32 flagslength, dma_addr_t dma_addr) u32 tmp; pSge->Address.Low = cpu_to_le32 - (lower_32_bits((unsigned long)(dma_addr))); - tmp = (u32)(upper_32_bits((unsigned long)dma_addr)); + (lower_32_bits(dma_addr)); + tmp = (u32)(upper_32_bits(dma_addr)); /* * 1078 errata workaround for the 36GB limitation @@ -1101,7 +1101,7 @@ mpt_add_chain_64bit(void *pAddr, u8 next, u16 length, dma_addr_t dma_addr) pChain->NextChainOffset = next; pChain->Address.Low = cpu_to_le32(tmp); - tmp = (u32)(upper_32_bits((unsigned long)dma_addr)); + tmp = (u32)(upper_32_bits(dma_addr)); pChain->Address.High = cpu_to_le32(tmp); } @@ -1297,12 +1297,8 @@ mpt_host_page_alloc(MPT_ADAPTER *ioc, pIOCInit_t ioc_init) psge = (char *)&ioc_init->HostPageBufferSGE; flags_length = MPI_SGE_FLAGS_SIMPLE_ELEMENT | MPI_SGE_FLAGS_SYSTEM_ADDRESS | - MPI_SGE_FLAGS_32_BIT_ADDRESSING | MPI_SGE_FLAGS_HOST_TO_IOC | MPI_SGE_FLAGS_END_OF_BUFFER; - if (sizeof(dma_addr_t) == sizeof(u64)) { - flags_length |= MPI_SGE_FLAGS_64_BIT_ADDRESSING; - } flags_length = flags_length << MPI_SGE_FLAGS_SHIFT; flags_length |= ioc->HostPageBuffer_sz; ioc->add_sge(psge, flags_length, ioc->HostPageBuffer_dma); @@ -2224,8 +2220,6 @@ mpt_do_ioc_recovery(MPT_ADAPTER *ioc, u32 reason, int sleepFlag) int hard; int rc=0; int ii; - u8 cb_idx; - int handlers; int ret = 0; int reset_alt_ioc_active = 0; int irq_allocated = 0; @@ -2548,34 +2542,6 @@ mpt_do_ioc_recovery(MPT_ADAPTER *ioc, u32 reason, int sleepFlag) mpt_get_manufacturing_pg_0(ioc); } - /* - * Call each currently registered protocol IOC reset handler - * with post-reset indication. - * NOTE: If we're doing _IOC_BRINGUP, there can be no - * MptResetHandlers[] registered yet. - */ - if (hard_reset_done) { - rc = handlers = 0; - for (cb_idx = MPT_MAX_PROTOCOL_DRIVERS-1; cb_idx; cb_idx--) { - if ((ret == 0) && MptResetHandlers[cb_idx]) { - dprintk(ioc, printk(MYIOC_s_DEBUG_FMT - "Calling IOC post_reset handler #%d\n", - ioc->name, cb_idx)); - rc += mpt_signal_reset(cb_idx, ioc, MPT_IOC_POST_RESET); - handlers++; - } - - if (alt_ioc_ready && MptResetHandlers[cb_idx]) { - drsprintk(ioc, printk(MYIOC_s_DEBUG_FMT - "Calling IOC post_reset handler #%d\n", - ioc->alt_ioc->name, cb_idx)); - rc += mpt_signal_reset(cb_idx, ioc->alt_ioc, MPT_IOC_POST_RESET); - handlers++; - } - } - /* FIXME? Examine results here? */ - } - out: if ((ret != 0) && irq_allocated) { free_irq(ioc->pci_irq, ioc); @@ -3938,6 +3904,7 @@ mpt_diag_reset(MPT_ADAPTER *ioc, int ignore, int sleepFlag) int count = 0; u32 diag1val = 0; MpiFwHeader_t *cached_fw; /* Pointer to FW */ + u8 cb_idx; /* Clear any existing interrupts */ CHIPREG_WRITE32(&ioc->chip->IntStatus, 0); @@ -3956,6 +3923,18 @@ mpt_diag_reset(MPT_ADAPTER *ioc, int ignore, int sleepFlag) else mdelay(1); + /* + * Call each currently registered protocol IOC reset handler + * with pre-reset indication. + * NOTE: If we're doing _IOC_BRINGUP, there can be no + * MptResetHandlers[] registered yet. + */ + for (cb_idx = MPT_MAX_PROTOCOL_DRIVERS-1; cb_idx; cb_idx--) { + if (MptResetHandlers[cb_idx]) + (*(MptResetHandlers[cb_idx]))(ioc, + MPT_IOC_PRE_RESET); + } + for (count = 0; count < 60; count ++) { doorbell = CHIPREG_READ32(&ioc->chip->Doorbell); doorbell &= MPI_IOC_STATE_MASK; @@ -4052,25 +4031,15 @@ mpt_diag_reset(MPT_ADAPTER *ioc, int ignore, int sleepFlag) * NOTE: If we're doing _IOC_BRINGUP, there can be no * MptResetHandlers[] registered yet. */ - { - u8 cb_idx; - int r = 0; - - for (cb_idx = MPT_MAX_PROTOCOL_DRIVERS-1; cb_idx; cb_idx--) { - if (MptResetHandlers[cb_idx]) { - dprintk(ioc, printk(MYIOC_s_DEBUG_FMT - "Calling IOC pre_reset handler #%d\n", - ioc->name, cb_idx)); - r += mpt_signal_reset(cb_idx, ioc, MPT_IOC_PRE_RESET); - if (ioc->alt_ioc) { - dprintk(ioc, printk(MYIOC_s_DEBUG_FMT - "Calling alt-%s pre_reset handler #%d\n", - ioc->name, ioc->alt_ioc->name, cb_idx)); - r += mpt_signal_reset(cb_idx, ioc->alt_ioc, MPT_IOC_PRE_RESET); - } + for (cb_idx = MPT_MAX_PROTOCOL_DRIVERS-1; cb_idx; cb_idx--) { + if (MptResetHandlers[cb_idx]) { + mpt_signal_reset(cb_idx, + ioc, MPT_IOC_PRE_RESET); + if (ioc->alt_ioc) { + mpt_signal_reset(cb_idx, + ioc->alt_ioc, MPT_IOC_PRE_RESET); } } - /* FIXME? Examine results here? */ } if (ioc->cached_fw) @@ -6956,7 +6925,7 @@ EXPORT_SYMBOL(mpt_halt_firmware); int mpt_HardResetHandler(MPT_ADAPTER *ioc, int sleepFlag) { - int rc; + int rc; u8 cb_idx; unsigned long flags; unsigned long time_count; @@ -6982,8 +6951,6 @@ mpt_HardResetHandler(MPT_ADAPTER *ioc, int sleepFlag) ioc->alt_ioc->ioc_reset_in_progress = 1; spin_unlock_irqrestore(&ioc->taskmgmt_lock, flags); - /* FIXME: If do_ioc_recovery fails, repeat.... - */ /* The SCSI driver needs to adjust timeouts on all current * commands prior to the diagnostic reset being issued. @@ -7020,6 +6987,15 @@ mpt_HardResetHandler(MPT_ADAPTER *ioc, int sleepFlag) } spin_unlock_irqrestore(&ioc->taskmgmt_lock, flags); + for (cb_idx = MPT_MAX_PROTOCOL_DRIVERS-1; cb_idx; cb_idx--) { + if (MptResetHandlers[cb_idx]) { + mpt_signal_reset(cb_idx, ioc, MPT_IOC_POST_RESET); + if (ioc->alt_ioc) + mpt_signal_reset(cb_idx, + ioc->alt_ioc, MPT_IOC_POST_RESET); + } + } + dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "HardResetHandler: completed (%d seconds): %s\n", ioc->name, diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h index 1c8514d..8dd4d21 100644 --- a/drivers/message/fusion/mptbase.h +++ b/drivers/message/fusion/mptbase.h @@ -76,8 +76,8 @@ #define COPYRIGHT "Copyright (c) 1999-2008 " MODULEAUTHOR #endif -#define MPT_LINUX_VERSION_COMMON "3.04.10" -#define MPT_LINUX_PACKAGE_NAME "@(#)mptlinux-3.04.09" +#define MPT_LINUX_VERSION_COMMON "3.04.12" +#define MPT_LINUX_PACKAGE_NAME "@(#)mptlinux-3.04.12" #define WHAT_MAGIC_STRING "@" "(" "#" ")" #define show_mptmod_ver(s,ver) \ @@ -157,8 +157,9 @@ /* * Try to keep these at 2^N-1 */ -#define MPT_FC_CAN_QUEUE 127 +#define MPT_FC_CAN_QUEUE 1024 #define MPT_SCSI_CAN_QUEUE 127 +#define MPT_SAS_CAN_QUEUE 127 /* * Set the MAX_SGE value based on user input. @@ -879,23 +880,9 @@ typedef enum { typedef struct _MPT_SCSI_HOST { MPT_ADAPTER *ioc; - int port; - u32 pad0; - MPT_LOCAL_REPLY *pLocal; /* used for internal commands */ - struct timer_list timer; - /* Pool of memory for holding SCpnts before doing - * OS callbacks. freeQ is the free pool. - */ - u8 negoNvram; /* DV disabled, nego NVRAM */ - u8 pad1; - u8 rsvd[2]; - MPT_FRAME_HDR *cmdPtr; /* Ptr to nonOS request */ - struct scsi_cmnd *abortSCpnt; - MPT_LOCAL_REPLY localReply; /* internal cmd reply struct */ ushort sel_timeout[MPT_MAX_FC_DEVICES]; char *info_kbuf; long last_queue_full; - u16 tm_iocstatus; u16 spi_pending; struct list_head target_reset_list; } MPT_SCSI_HOST; diff --git a/drivers/message/fusion/mptfc.c b/drivers/message/fusion/mptfc.c index e61df13..ebf6ae0 100644 --- a/drivers/message/fusion/mptfc.c +++ b/drivers/message/fusion/mptfc.c @@ -1288,25 +1288,6 @@ mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id) dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "ScsiLookup @ %p\n", ioc->name, ioc->ScsiLookup)); - /* Clear the TM flags - */ - hd->abortSCpnt = NULL; - - /* Clear the pointer used to store - * single-threaded commands, i.e., those - * issued during a bus scan, dv and - * configuration pages. - */ - hd->cmdPtr = NULL; - - /* Initialize this SCSI Hosts' timers - * To use, set the timer expires field - * and add_timer - */ - init_timer(&hd->timer); - hd->timer.data = (unsigned long) hd; - hd->timer.function = mptscsih_timer_expired; - hd->last_queue_full = 0; sh->transportt = mptfc_transport_template; diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c index 55ff252..83873e3 100644 --- a/drivers/message/fusion/mptsas.c +++ b/drivers/message/fusion/mptsas.c @@ -72,6 +72,7 @@ */ #define MPTSAS_RAID_CHANNEL 1 +#define SAS_CONFIG_PAGE_TIMEOUT 30 MODULE_AUTHOR(MODULEAUTHOR); MODULE_DESCRIPTION(my_NAME); MODULE_LICENSE("GPL"); @@ -324,7 +325,6 @@ mptsas_cleanup_fw_event_q(MPT_ADAPTER *ioc) { struct fw_event_work *fw_event, *next; struct mptsas_target_reset_event *target_reset_list, *n; - u8 flush_q; MPT_SCSI_HOST *hd = shost_priv(ioc->sh); /* flush the target_reset_list */ @@ -344,15 +344,10 @@ mptsas_cleanup_fw_event_q(MPT_ADAPTER *ioc) !ioc->fw_event_q || in_interrupt()) return; - flush_q = 0; list_for_each_entry_safe(fw_event, next, &ioc->fw_event_list, list) { if (cancel_delayed_work(&fw_event->work)) mptsas_free_fw_event(ioc, fw_event); - else - flush_q = 1; } - if (flush_q) - flush_workqueue(ioc->fw_event_q); } @@ -661,7 +656,7 @@ mptsas_add_device_component_starget_ir(MPT_ADAPTER *ioc, cfg.pageAddr = starget->id; cfg.cfghdr.hdr = &hdr; cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER; - cfg.timeout = 10; + cfg.timeout = SAS_CONFIG_PAGE_TIMEOUT; if (mpt_config(ioc, &cfg) != 0) goto out; @@ -851,7 +846,13 @@ mptsas_setup_wide_ports(MPT_ADAPTER *ioc, struct mptsas_portinfo *port_info) port_details->num_phys--; port_details->phy_bitmask &= ~ (1 << phy_info->phy_id); memset(&phy_info->attached, 0, sizeof(struct mptsas_devinfo)); - sas_port_delete_phy(port_details->port, phy_info->phy); + if (phy_info->phy) { + devtprintk(ioc, dev_printk(KERN_DEBUG, + &phy_info->phy->dev, MYIOC_s_FMT + "delete phy %d, phy-obj (0x%p)\n", ioc->name, + phy_info->phy_id, phy_info->phy)); + sas_port_delete_phy(port_details->port, phy_info->phy); + } phy_info->port_details = NULL; } @@ -1272,7 +1273,6 @@ mptsas_ioc_reset(MPT_ADAPTER *ioc, int reset_phase) } mptsas_cleanup_fw_event_q(ioc); mptsas_queue_rescan(ioc); - mptsas_fw_event_on(ioc); break; default: break; @@ -1318,7 +1318,7 @@ mptsas_sas_enclosure_pg0(MPT_ADAPTER *ioc, struct mptsas_enclosure *enclosure, cfg.pageAddr = form + form_specific; cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER; cfg.dir = 0; /* read */ - cfg.timeout = 10; + cfg.timeout = SAS_CONFIG_PAGE_TIMEOUT; error = mpt_config(ioc, &cfg); if (error) @@ -1592,6 +1592,7 @@ mptsas_firmware_event_work(struct work_struct *work) mptsas_scan_sas_topology(ioc); ioc->in_rescan = 0; mptsas_free_fw_event(ioc, fw_event); + mptsas_fw_event_on(ioc); return; } @@ -1891,7 +1892,7 @@ static struct scsi_host_template mptsas_driver_template = { .eh_bus_reset_handler = mptscsih_bus_reset, .eh_host_reset_handler = mptscsih_host_reset, .bios_param = mptscsih_bios_param, - .can_queue = MPT_FC_CAN_QUEUE, + .can_queue = MPT_SAS_CAN_QUEUE, .this_id = -1, .sg_tablesize = MPT_SCSI_SG_DEPTH, .max_sectors = 8192, @@ -1926,7 +1927,7 @@ static int mptsas_get_linkerrors(struct sas_phy *phy) cfg.pageAddr = phy->identify.phy_identifier; cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER; cfg.dir = 0; /* read */ - cfg.timeout = 10; + cfg.timeout = SAS_CONFIG_PAGE_TIMEOUT; error = mpt_config(ioc, &cfg); if (error) @@ -2278,7 +2279,7 @@ mptsas_sas_io_unit_pg0(MPT_ADAPTER *ioc, struct mptsas_portinfo *port_info) cfg.pageAddr = 0; cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER; cfg.dir = 0; /* read */ - cfg.timeout = 10; + cfg.timeout = SAS_CONFIG_PAGE_TIMEOUT; error = mpt_config(ioc, &cfg); if (error) @@ -2349,7 +2350,7 @@ mptsas_sas_io_unit_pg1(MPT_ADAPTER *ioc) cfg.cfghdr.ehdr = &hdr; cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER; - cfg.timeout = 10; + cfg.timeout = SAS_CONFIG_PAGE_TIMEOUT; cfg.cfghdr.ehdr->PageType = MPI_CONFIG_PAGETYPE_EXTENDED; cfg.cfghdr.ehdr->ExtPageType = MPI_CONFIG_EXTPAGETYPE_SAS_IO_UNIT; cfg.cfghdr.ehdr->PageVersion = MPI_SASIOUNITPAGE1_PAGEVERSION; @@ -2411,7 +2412,7 @@ mptsas_sas_phy_pg0(MPT_ADAPTER *ioc, struct mptsas_phyinfo *phy_info, cfg.cfghdr.ehdr = &hdr; cfg.dir = 0; /* read */ - cfg.timeout = 10; + cfg.timeout = SAS_CONFIG_PAGE_TIMEOUT; /* Get Phy Pg 0 for each Phy. */ cfg.physAddr = -1; @@ -2479,7 +2480,7 @@ mptsas_sas_device_pg0(MPT_ADAPTER *ioc, struct mptsas_devinfo *device_info, cfg.physAddr = -1; cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER; cfg.dir = 0; /* read */ - cfg.timeout = 10; + cfg.timeout = SAS_CONFIG_PAGE_TIMEOUT; memset(device_info, 0, sizeof(struct mptsas_devinfo)); error = mpt_config(ioc, &cfg); @@ -2554,7 +2555,7 @@ mptsas_sas_expander_pg0(MPT_ADAPTER *ioc, struct mptsas_portinfo *port_info, cfg.pageAddr = form + form_specific; cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER; cfg.dir = 0; /* read */ - cfg.timeout = 10; + cfg.timeout = SAS_CONFIG_PAGE_TIMEOUT; memset(port_info, 0, sizeof(struct mptsas_portinfo)); error = mpt_config(ioc, &cfg); @@ -2635,7 +2636,7 @@ mptsas_sas_expander_pg1(MPT_ADAPTER *ioc, struct mptsas_phyinfo *phy_info, cfg.pageAddr = form + form_specific; cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER; cfg.dir = 0; /* read */ - cfg.timeout = 10; + cfg.timeout = SAS_CONFIG_PAGE_TIMEOUT; error = mpt_config(ioc, &cfg); if (error) @@ -3307,6 +3308,7 @@ mptsas_send_expander_event(struct fw_event_work *fw_event) expander_data = (MpiEventDataSasExpanderStatusChange_t *) fw_event->event_data; memcpy(&sas_address, &expander_data->SASAddress, sizeof(__le64)); + sas_address = le64_to_cpu(sas_address); port_info = mptsas_find_portinfo_by_sas_address(ioc, sas_address); if (expander_data->ReasonCode == MPI_EVENT_SAS_EXP_RC_ADDED) { @@ -4760,10 +4762,9 @@ mptsas_probe(struct pci_dev *pdev, const struct pci_device_id *id) /* set 16 byte cdb's */ sh->max_cmd_len = 16; - - sh->max_id = ioc->pfacts[0].PortSCSIID; + sh->can_queue = min_t(int, ioc->req_depth - 10, sh->can_queue); + sh->max_id = -1; sh->max_lun = max_lun; - sh->transportt = mptsas_transport_template; /* Required entry. @@ -4821,25 +4822,6 @@ mptsas_probe(struct pci_dev *pdev, const struct pci_device_id *id) dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "ScsiLookup @ %p\n", ioc->name, ioc->ScsiLookup)); - /* Clear the TM flags - */ - hd->abortSCpnt = NULL; - - /* Clear the pointer used to store - * single-threaded commands, i.e., those - * issued during a bus scan, dv and - * configuration pages. - */ - hd->cmdPtr = NULL; - - /* Initialize this SCSI Hosts' timers - * To use, set the timer expires field - * and add_timer - */ - init_timer(&hd->timer); - hd->timer.data = (unsigned long) hd; - hd->timer.function = mptscsih_timer_expired; - ioc->sas_data.ptClear = mpt_pt_clear; hd->last_queue_full = 0; diff --git a/drivers/message/fusion/mptscsih.c b/drivers/message/fusion/mptscsih.c index 8440f78f..c295786 100644 --- a/drivers/message/fusion/mptscsih.c +++ b/drivers/message/fusion/mptscsih.c @@ -628,6 +628,16 @@ mptscsih_io_done(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr) return 1; } + if (ioc->bus_type == SAS) { + VirtDevice *vdevice = sc->device->hostdata; + + if (!vdevice || !vdevice->vtarget || + vdevice->vtarget->deleted) { + sc->result = DID_NO_CONNECT << 16; + goto out; + } + } + sc->host_scribble = NULL; sc->result = DID_OK << 16; /* Set default reply as OK */ pScsiReq = (SCSIIORequest_t *) mf; @@ -689,6 +699,7 @@ mptscsih_io_done(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr) switch(status) { case MPI_IOCSTATUS_BUSY: /* 0x0002 */ + case MPI_IOCSTATUS_INSUFFICIENT_RESOURCES: /* 0x0006 */ /* CHECKME! * Maybe: DRIVER_BUSY | SUGGEST_RETRY | DID_SOFT_ERROR (retry) * But not: DID_BUS_BUSY lest one risk @@ -872,7 +883,6 @@ mptscsih_io_done(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr) case MPI_IOCSTATUS_INVALID_SGL: /* 0x0003 */ case MPI_IOCSTATUS_INTERNAL_ERROR: /* 0x0004 */ case MPI_IOCSTATUS_RESERVED: /* 0x0005 */ - case MPI_IOCSTATUS_INSUFFICIENT_RESOURCES: /* 0x0006 */ case MPI_IOCSTATUS_INVALID_FIELD: /* 0x0007 */ case MPI_IOCSTATUS_INVALID_STATE: /* 0x0008 */ case MPI_IOCSTATUS_SCSI_IO_DATA_ERROR: /* 0x0046 */ @@ -892,7 +902,7 @@ mptscsih_io_done(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr) #endif } /* end of address reply case */ - +out: /* Unmap the DMA buffers, if any. */ scsi_dma_unmap(sc); @@ -1729,9 +1739,6 @@ mptscsih_abort(struct scsi_cmnd * SCpnt) */ mf = MPT_INDEX_2_MFPTR(ioc, scpnt_idx); ctx2abort = mf->u.frame.hwhdr.msgctxu.MsgContext; - - hd->abortSCpnt = SCpnt; - retval = mptscsih_IssueTaskMgmt(hd, MPI_SCSITASKMGMT_TASKTYPE_ABORT_TASK, vdevice->vtarget->channel, @@ -2293,7 +2300,10 @@ mptscsih_change_queue_depth(struct scsi_device *sdev, int qdepth) else max_depth = MPT_SCSI_CMD_PER_DEV_LOW; } else - max_depth = MPT_SCSI_CMD_PER_DEV_HIGH; + max_depth = ioc->sh->can_queue; + + if (!sdev->tagged_supported) + max_depth = 1; if (qdepth > max_depth) qdepth = max_depth; @@ -2627,50 +2637,6 @@ mptscsih_scandv_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *req, return 1; } -/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ -/* mptscsih_timer_expired - Call back for timer process. - * Used only for dv functionality. - * @data: Pointer to MPT_SCSI_HOST recast as an unsigned long - * - */ -void -mptscsih_timer_expired(unsigned long data) -{ - MPT_SCSI_HOST *hd = (MPT_SCSI_HOST *) data; - MPT_ADAPTER *ioc = hd->ioc; - - ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Timer Expired! Cmd %p\n", ioc->name, hd->cmdPtr)); - - if (hd->cmdPtr) { - MPIHeader_t *cmd = (MPIHeader_t *)hd->cmdPtr; - - if (cmd->Function == MPI_FUNCTION_SCSI_IO_REQUEST) { - /* Desire to issue a task management request here. - * TM requests MUST be single threaded. - * If old eh code and no TM current, issue request. - * If new eh code, do nothing. Wait for OS cmd timeout - * for bus reset. - */ - } else { - /* Perform a FW reload */ - if (mpt_HardResetHandler(ioc, NO_SLEEP) < 0) { - printk(MYIOC_s_WARN_FMT "Firmware Reload FAILED!\n", ioc->name); - } - } - } else { - /* This should NEVER happen */ - printk(MYIOC_s_WARN_FMT "Null cmdPtr!!!!\n", ioc->name); - } - - /* No more processing. - * TM call will generate an interrupt for SCSI TM Management. - * The FW will reply to all outstanding commands, callback will finish cleanup. - * Hard reset clean-up will free all resources. - */ - ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Timer Expired Complete!\n", ioc->name)); - - return; -} /** * mptscsih_get_completion_code - @@ -3265,6 +3231,5 @@ EXPORT_SYMBOL(mptscsih_scandv_complete); EXPORT_SYMBOL(mptscsih_event_process); EXPORT_SYMBOL(mptscsih_ioc_reset); EXPORT_SYMBOL(mptscsih_change_queue_depth); -EXPORT_SYMBOL(mptscsih_timer_expired); /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ diff --git a/drivers/message/fusion/mptscsih.h b/drivers/message/fusion/mptscsih.h index eb3f677..e0b33e0 100644 --- a/drivers/message/fusion/mptscsih.h +++ b/drivers/message/fusion/mptscsih.h @@ -129,7 +129,6 @@ extern int mptscsih_scandv_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRA extern int mptscsih_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply); extern int mptscsih_ioc_reset(MPT_ADAPTER *ioc, int post_reset); extern int mptscsih_change_queue_depth(struct scsi_device *sdev, int qdepth); -extern void mptscsih_timer_expired(unsigned long data); extern u8 mptscsih_raid_id_to_num(MPT_ADAPTER *ioc, u8 channel, u8 id); extern int mptscsih_is_phys_disk(MPT_ADAPTER *ioc, u8 channel, u8 id); extern struct device_attribute *mptscsih_host_attrs[]; diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c index c5b808f..69f4257 100644 --- a/drivers/message/fusion/mptspi.c +++ b/drivers/message/fusion/mptspi.c @@ -1472,28 +1472,7 @@ mptspi_probe(struct pci_dev *pdev, const struct pci_device_id *id) dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "ScsiLookup @ %p\n", ioc->name, ioc->ScsiLookup)); - /* Clear the TM flags - */ - hd->abortSCpnt = NULL; - - /* Clear the pointer used to store - * single-threaded commands, i.e., those - * issued during a bus scan, dv and - * configuration pages. - */ - hd->cmdPtr = NULL; - - /* Initialize this SCSI Hosts' timers - * To use, set the timer expires field - * and add_timer - */ - init_timer(&hd->timer); - hd->timer.data = (unsigned long) hd; - hd->timer.function = mptscsih_timer_expired; - ioc->spi_data.Saf_Te = mpt_saf_te; - - hd->negoNvram = MPT_SCSICFG_USE_NVRAM; ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "saf_te %x\n", ioc->name, diff --git a/drivers/misc/enclosure.c b/drivers/misc/enclosure.c index 348443b..7b03930 100644 --- a/drivers/misc/enclosure.c +++ b/drivers/misc/enclosure.c @@ -33,24 +33,44 @@ static DEFINE_MUTEX(container_list_lock); static struct class enclosure_class; /** - * enclosure_find - find an enclosure given a device - * @dev: the device to find for + * enclosure_find - find an enclosure given a parent device + * @dev: the parent to match against + * @start: Optional enclosure device to start from (NULL if none) * - * Looks through the list of registered enclosures to see - * if it can find a match for a device. Returns NULL if no - * enclosure is found. Obtains a reference to the enclosure class - * device which must be released with device_put(). + * Looks through the list of registered enclosures to find all those + * with @dev as a parent. Returns NULL if no enclosure is + * found. @start can be used as a starting point to obtain multiple + * enclosures per parent (should begin with NULL and then be set to + * each returned enclosure device). Obtains a reference to the + * enclosure class device which must be released with device_put(). + * If @start is not NULL, a reference must be taken on it which is + * released before returning (this allows a loop through all + * enclosures to exit with only the reference on the enclosure of + * interest held). Note that the @dev may correspond to the actual + * device housing the enclosure, in which case no iteration via @start + * is required. */ -struct enclosure_device *enclosure_find(struct device *dev) +struct enclosure_device *enclosure_find(struct device *dev, + struct enclosure_device *start) { struct enclosure_device *edev; mutex_lock(&container_list_lock); - list_for_each_entry(edev, &container_list, node) { - if (edev->edev.parent == dev) { - get_device(&edev->edev); - mutex_unlock(&container_list_lock); - return edev; + edev = list_prepare_entry(start, &container_list, node); + if (start) + put_device(&start->edev); + + list_for_each_entry_continue(edev, &container_list, node) { + struct device *parent = edev->edev.parent; + /* parent might not be immediate, so iterate up to + * the root of the tree if necessary */ + while (parent) { + if (parent == dev) { + get_device(&edev->edev); + mutex_unlock(&container_list_lock); + return edev; + } + parent = parent->parent; } } mutex_unlock(&container_list_lock); @@ -295,6 +315,9 @@ int enclosure_add_device(struct enclosure_device *edev, int component, cdev = &edev->component[component]; + if (cdev->dev == dev) + return -EEXIST; + if (cdev->dev) enclosure_remove_links(cdev); @@ -312,19 +335,25 @@ EXPORT_SYMBOL_GPL(enclosure_add_device); * Returns zero on success or an error. * */ -int enclosure_remove_device(struct enclosure_device *edev, int component) +int enclosure_remove_device(struct enclosure_device *edev, struct device *dev) { struct enclosure_component *cdev; + int i; - if (!edev || component >= edev->components) + if (!edev || !dev) return -EINVAL; - cdev = &edev->component[component]; - - device_del(&cdev->cdev); - put_device(cdev->dev); - cdev->dev = NULL; - return device_add(&cdev->cdev); + for (i = 0; i < edev->components; i++) { + cdev = &edev->component[i]; + if (cdev->dev == dev) { + enclosure_remove_links(cdev); + device_del(&cdev->cdev); + put_device(dev); + cdev->dev = NULL; + return device_add(&cdev->cdev); + } + } + return -ENODEV; } EXPORT_SYMBOL_GPL(enclosure_remove_device); diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 2ccbd18..1be6bf7 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -42,6 +42,12 @@ static char *init_device; module_param_named(device, init_device, charp, 0400); MODULE_PARM_DESC(device, "specify initial device"); +static struct kmem_cache *zfcp_cache_hw_align(const char *name, + unsigned long size) +{ + return kmem_cache_create(name, size, roundup_pow_of_two(size), 0, NULL); +} + static int zfcp_reqlist_alloc(struct zfcp_adapter *adapter) { int idx; @@ -78,7 +84,7 @@ static void __init zfcp_init_device_configure(char *busid, u64 wwpn, u64 lun) struct zfcp_port *port; struct zfcp_unit *unit; - down(&zfcp_data.config_sema); + mutex_lock(&zfcp_data.config_mutex); read_lock_irq(&zfcp_data.config_lock); adapter = zfcp_get_adapter_by_busid(busid); if (adapter) @@ -93,31 +99,23 @@ static void __init zfcp_init_device_configure(char *busid, u64 wwpn, u64 lun) unit = zfcp_unit_enqueue(port, lun); if (IS_ERR(unit)) goto out_unit; - up(&zfcp_data.config_sema); + mutex_unlock(&zfcp_data.config_mutex); ccw_device_set_online(adapter->ccw_device); zfcp_erp_wait(adapter); flush_work(&unit->scsi_work); - down(&zfcp_data.config_sema); + mutex_lock(&zfcp_data.config_mutex); zfcp_unit_put(unit); out_unit: zfcp_port_put(port); out_port: zfcp_adapter_put(adapter); out_adapter: - up(&zfcp_data.config_sema); + mutex_unlock(&zfcp_data.config_mutex); return; } -static struct kmem_cache *zfcp_cache_create(int size, char *name) -{ - int align = 1; - while ((size - align) > 0) - align <<= 1; - return kmem_cache_create(name , size, align, 0, NULL); -} - static void __init zfcp_init_device_setup(char *devstr) { char *token; @@ -158,24 +156,27 @@ static int __init zfcp_module_init(void) { int retval = -ENOMEM; - zfcp_data.fsf_req_qtcb_cache = zfcp_cache_create( - sizeof(struct zfcp_fsf_req_qtcb), "zfcp_fsf"); - if (!zfcp_data.fsf_req_qtcb_cache) + zfcp_data.gpn_ft_cache = zfcp_cache_hw_align("zfcp_gpn", + sizeof(struct ct_iu_gpn_ft_req)); + if (!zfcp_data.gpn_ft_cache) goto out; - zfcp_data.sr_buffer_cache = zfcp_cache_create( - sizeof(struct fsf_status_read_buffer), "zfcp_sr"); + zfcp_data.qtcb_cache = zfcp_cache_hw_align("zfcp_qtcb", + sizeof(struct fsf_qtcb)); + if (!zfcp_data.qtcb_cache) + goto out_qtcb_cache; + + zfcp_data.sr_buffer_cache = zfcp_cache_hw_align("zfcp_sr", + sizeof(struct fsf_status_read_buffer)); if (!zfcp_data.sr_buffer_cache) goto out_sr_cache; - zfcp_data.gid_pn_cache = zfcp_cache_create( - sizeof(struct zfcp_gid_pn_data), "zfcp_gid"); + zfcp_data.gid_pn_cache = zfcp_cache_hw_align("zfcp_gid", + sizeof(struct zfcp_gid_pn_data)); if (!zfcp_data.gid_pn_cache) goto out_gid_cache; - zfcp_data.work_queue = create_singlethread_workqueue("zfcp_wq"); - - sema_init(&zfcp_data.config_sema, 1); + mutex_init(&zfcp_data.config_mutex); rwlock_init(&zfcp_data.config_lock); zfcp_data.scsi_transport_template = @@ -209,7 +210,9 @@ out_transport: out_gid_cache: kmem_cache_destroy(zfcp_data.sr_buffer_cache); out_sr_cache: - kmem_cache_destroy(zfcp_data.fsf_req_qtcb_cache); + kmem_cache_destroy(zfcp_data.qtcb_cache); +out_qtcb_cache: + kmem_cache_destroy(zfcp_data.gpn_ft_cache); out: return retval; } @@ -263,7 +266,7 @@ static void zfcp_sysfs_unit_release(struct device *dev) * @port: pointer to port where unit is added * @fcp_lun: FCP LUN of unit to be enqueued * Returns: pointer to enqueued unit on success, ERR_PTR on error - * Locks: config_sema must be held to serialize changes to the unit list + * Locks: config_mutex must be held to serialize changes to the unit list * * Sets up some unit internal structures and creates sysfs entry. */ @@ -271,6 +274,13 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun) { struct zfcp_unit *unit; + read_lock_irq(&zfcp_data.config_lock); + if (zfcp_get_unit_by_lun(port, fcp_lun)) { + read_unlock_irq(&zfcp_data.config_lock); + return ERR_PTR(-EINVAL); + } + read_unlock_irq(&zfcp_data.config_lock); + unit = kzalloc(sizeof(struct zfcp_unit), GFP_KERNEL); if (!unit) return ERR_PTR(-ENOMEM); @@ -282,8 +292,11 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun) unit->port = port; unit->fcp_lun = fcp_lun; - dev_set_name(&unit->sysfs_device, "0x%016llx", - (unsigned long long) fcp_lun); + if (dev_set_name(&unit->sysfs_device, "0x%016llx", + (unsigned long long) fcp_lun)) { + kfree(unit); + return ERR_PTR(-ENOMEM); + } unit->sysfs_device.parent = &port->sysfs_device; unit->sysfs_device.release = zfcp_sysfs_unit_release; dev_set_drvdata(&unit->sysfs_device, unit); @@ -299,20 +312,15 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun) unit->latencies.cmd.channel.min = 0xFFFFFFFF; unit->latencies.cmd.fabric.min = 0xFFFFFFFF; - read_lock_irq(&zfcp_data.config_lock); - if (zfcp_get_unit_by_lun(port, fcp_lun)) { - read_unlock_irq(&zfcp_data.config_lock); - goto err_out_free; + if (device_register(&unit->sysfs_device)) { + put_device(&unit->sysfs_device); + return ERR_PTR(-EINVAL); } - read_unlock_irq(&zfcp_data.config_lock); - - if (device_register(&unit->sysfs_device)) - goto err_out_free; if (sysfs_create_group(&unit->sysfs_device.kobj, &zfcp_sysfs_unit_attrs)) { device_unregister(&unit->sysfs_device); - return ERR_PTR(-EIO); + return ERR_PTR(-EINVAL); } zfcp_unit_get(unit); @@ -327,10 +335,6 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun) zfcp_port_get(port); return unit; - -err_out_free: - kfree(unit); - return ERR_PTR(-EINVAL); } /** @@ -353,37 +357,47 @@ void zfcp_unit_dequeue(struct zfcp_unit *unit) static int zfcp_allocate_low_mem_buffers(struct zfcp_adapter *adapter) { - /* must only be called with zfcp_data.config_sema taken */ - adapter->pool.fsf_req_erp = - mempool_create_slab_pool(1, zfcp_data.fsf_req_qtcb_cache); - if (!adapter->pool.fsf_req_erp) + /* must only be called with zfcp_data.config_mutex taken */ + adapter->pool.erp_req = + mempool_create_kmalloc_pool(1, sizeof(struct zfcp_fsf_req)); + if (!adapter->pool.erp_req) + return -ENOMEM; + + adapter->pool.gid_pn_req = + mempool_create_kmalloc_pool(1, sizeof(struct zfcp_fsf_req)); + if (!adapter->pool.gid_pn_req) return -ENOMEM; - adapter->pool.fsf_req_scsi = - mempool_create_slab_pool(1, zfcp_data.fsf_req_qtcb_cache); - if (!adapter->pool.fsf_req_scsi) + adapter->pool.scsi_req = + mempool_create_kmalloc_pool(1, sizeof(struct zfcp_fsf_req)); + if (!adapter->pool.scsi_req) return -ENOMEM; - adapter->pool.fsf_req_abort = - mempool_create_slab_pool(1, zfcp_data.fsf_req_qtcb_cache); - if (!adapter->pool.fsf_req_abort) + adapter->pool.scsi_abort = + mempool_create_kmalloc_pool(1, sizeof(struct zfcp_fsf_req)); + if (!adapter->pool.scsi_abort) return -ENOMEM; - adapter->pool.fsf_req_status_read = + adapter->pool.status_read_req = mempool_create_kmalloc_pool(FSF_STATUS_READS_RECOM, sizeof(struct zfcp_fsf_req)); - if (!adapter->pool.fsf_req_status_read) + if (!adapter->pool.status_read_req) return -ENOMEM; - adapter->pool.data_status_read = + adapter->pool.qtcb_pool = + mempool_create_slab_pool(4, zfcp_data.qtcb_cache); + if (!adapter->pool.qtcb_pool) + return -ENOMEM; + + adapter->pool.status_read_data = mempool_create_slab_pool(FSF_STATUS_READS_RECOM, zfcp_data.sr_buffer_cache); - if (!adapter->pool.data_status_read) + if (!adapter->pool.status_read_data) return -ENOMEM; - adapter->pool.data_gid_pn = + adapter->pool.gid_pn_data = mempool_create_slab_pool(1, zfcp_data.gid_pn_cache); - if (!adapter->pool.data_gid_pn) + if (!adapter->pool.gid_pn_data) return -ENOMEM; return 0; @@ -391,19 +405,21 @@ static int zfcp_allocate_low_mem_buffers(struct zfcp_adapter *adapter) static void zfcp_free_low_mem_buffers(struct zfcp_adapter *adapter) { - /* zfcp_data.config_sema must be held */ - if (adapter->pool.fsf_req_erp) - mempool_destroy(adapter->pool.fsf_req_erp); - if (adapter->pool.fsf_req_scsi) - mempool_destroy(adapter->pool.fsf_req_scsi); - if (adapter->pool.fsf_req_abort) - mempool_destroy(adapter->pool.fsf_req_abort); - if (adapter->pool.fsf_req_status_read) - mempool_destroy(adapter->pool.fsf_req_status_read); - if (adapter->pool.data_status_read) - mempool_destroy(adapter->pool.data_status_read); - if (adapter->pool.data_gid_pn) - mempool_destroy(adapter->pool.data_gid_pn); + /* zfcp_data.config_mutex must be held */ + if (adapter->pool.erp_req) + mempool_destroy(adapter->pool.erp_req); + if (adapter->pool.scsi_req) + mempool_destroy(adapter->pool.scsi_req); + if (adapter->pool.scsi_abort) + mempool_destroy(adapter->pool.scsi_abort); + if (adapter->pool.qtcb_pool) + mempool_destroy(adapter->pool.qtcb_pool); + if (adapter->pool.status_read_req) + mempool_destroy(adapter->pool.status_read_req); + if (adapter->pool.status_read_data) + mempool_destroy(adapter->pool.status_read_data); + if (adapter->pool.gid_pn_data) + mempool_destroy(adapter->pool.gid_pn_data); } /** @@ -418,7 +434,7 @@ static void zfcp_free_low_mem_buffers(struct zfcp_adapter *adapter) int zfcp_status_read_refill(struct zfcp_adapter *adapter) { while (atomic_read(&adapter->stat_miss) > 0) - if (zfcp_fsf_status_read(adapter)) { + if (zfcp_fsf_status_read(adapter->qdio)) { if (atomic_read(&adapter->stat_miss) >= 16) { zfcp_erp_adapter_reopen(adapter, 0, "axsref1", NULL); @@ -446,6 +462,27 @@ static void zfcp_print_sl(struct seq_file *m, struct service_level *sl) adapter->fsf_lic_version); } +static int zfcp_setup_adapter_work_queue(struct zfcp_adapter *adapter) +{ + char name[TASK_COMM_LEN]; + + snprintf(name, sizeof(name), "zfcp_q_%s", + dev_name(&adapter->ccw_device->dev)); + adapter->work_queue = create_singlethread_workqueue(name); + + if (adapter->work_queue) + return 0; + return -ENOMEM; +} + +static void zfcp_destroy_adapter_work_queue(struct zfcp_adapter *adapter) +{ + if (adapter->work_queue) + destroy_workqueue(adapter->work_queue); + adapter->work_queue = NULL; + +} + /** * zfcp_adapter_enqueue - enqueue a new adapter to the list * @ccw_device: pointer to the struct cc_device @@ -455,7 +492,7 @@ static void zfcp_print_sl(struct seq_file *m, struct service_level *sl) * Enqueues an adapter at the end of the adapter list in the driver data. * All adapter internal structures are set up. * Proc-fs entries are also created. - * locks: config_sema must be held to serialise changes to the adapter list + * locks: config_mutex must be held to serialize changes to the adapter list */ int zfcp_adapter_enqueue(struct ccw_device *ccw_device) { @@ -463,37 +500,37 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device) /* * Note: It is safe to release the list_lock, as any list changes - * are protected by the config_sema, which must be held to get here + * are protected by the config_mutex, which must be held to get here */ adapter = kzalloc(sizeof(struct zfcp_adapter), GFP_KERNEL); if (!adapter) return -ENOMEM; - adapter->gs = kzalloc(sizeof(struct zfcp_wka_ports), GFP_KERNEL); - if (!adapter->gs) { - kfree(adapter); - return -ENOMEM; - } - ccw_device->handler = NULL; adapter->ccw_device = ccw_device; atomic_set(&adapter->refcount, 0); - if (zfcp_qdio_allocate(adapter)) - goto qdio_allocate_failed; + if (zfcp_qdio_setup(adapter)) + goto qdio_failed; if (zfcp_allocate_low_mem_buffers(adapter)) - goto failed_low_mem_buffers; + goto low_mem_buffers_failed; if (zfcp_reqlist_alloc(adapter)) - goto failed_low_mem_buffers; + goto low_mem_buffers_failed; - if (zfcp_adapter_debug_register(adapter)) + if (zfcp_dbf_adapter_register(adapter)) goto debug_register_failed; + if (zfcp_setup_adapter_work_queue(adapter)) + goto work_queue_failed; + + if (zfcp_fc_gs_setup(adapter)) + goto generic_services_failed; + init_waitqueue_head(&adapter->remove_wq); - init_waitqueue_head(&adapter->erp_thread_wqh); + init_waitqueue_head(&adapter->erp_ready_wq); init_waitqueue_head(&adapter->erp_done_wqh); INIT_LIST_HEAD(&adapter->port_list_head); @@ -502,20 +539,14 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device) spin_lock_init(&adapter->req_list_lock); - spin_lock_init(&adapter->hba_dbf_lock); - spin_lock_init(&adapter->san_dbf_lock); - spin_lock_init(&adapter->scsi_dbf_lock); - spin_lock_init(&adapter->rec_dbf_lock); - spin_lock_init(&adapter->req_q_lock); - spin_lock_init(&adapter->qdio_stat_lock); - rwlock_init(&adapter->erp_lock); rwlock_init(&adapter->abort_lock); - sema_init(&adapter->erp_ready_sem, 0); + if (zfcp_erp_thread_setup(adapter)) + goto erp_thread_failed; INIT_WORK(&adapter->stat_work, _zfcp_status_read_scheduler); - INIT_WORK(&adapter->scan_work, _zfcp_scan_ports_later); + INIT_WORK(&adapter->scan_work, _zfcp_fc_scan_ports_later); adapter->service_level.seq_print = zfcp_print_sl; @@ -529,20 +560,25 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device) goto sysfs_failed; atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status); - zfcp_fc_wka_ports_init(adapter); if (!zfcp_adapter_scsi_register(adapter)) return 0; sysfs_failed: - zfcp_adapter_debug_unregister(adapter); + zfcp_erp_thread_kill(adapter); +erp_thread_failed: + zfcp_fc_gs_destroy(adapter); +generic_services_failed: + zfcp_destroy_adapter_work_queue(adapter); +work_queue_failed: + zfcp_dbf_adapter_unregister(adapter->dbf); debug_register_failed: dev_set_drvdata(&ccw_device->dev, NULL); kfree(adapter->req_list); -failed_low_mem_buffers: +low_mem_buffers_failed: zfcp_free_low_mem_buffers(adapter); -qdio_allocate_failed: - zfcp_qdio_free(adapter); +qdio_failed: + zfcp_qdio_destroy(adapter->qdio); kfree(adapter); return -ENOMEM; } @@ -559,6 +595,7 @@ void zfcp_adapter_dequeue(struct zfcp_adapter *adapter) cancel_work_sync(&adapter->scan_work); cancel_work_sync(&adapter->stat_work); + zfcp_fc_wka_ports_force_offline(adapter->gs); zfcp_adapter_scsi_unregister(adapter); sysfs_remove_group(&adapter->ccw_device->dev.kobj, &zfcp_sysfs_adapter_attrs); @@ -570,13 +607,15 @@ void zfcp_adapter_dequeue(struct zfcp_adapter *adapter) if (!retval) return; - zfcp_adapter_debug_unregister(adapter); - zfcp_qdio_free(adapter); + zfcp_fc_gs_destroy(adapter); + zfcp_erp_thread_kill(adapter); + zfcp_destroy_adapter_work_queue(adapter); + zfcp_dbf_adapter_unregister(adapter->dbf); zfcp_free_low_mem_buffers(adapter); + zfcp_qdio_destroy(adapter->qdio); kfree(adapter->req_list); kfree(adapter->fc_stats); kfree(adapter->stats_reset_data); - kfree(adapter->gs); kfree(adapter); } @@ -592,7 +631,7 @@ static void zfcp_sysfs_port_release(struct device *dev) * @status: initial status for the port * @d_id: destination id of the remote port to be enqueued * Returns: pointer to enqueued port on success, ERR_PTR on error - * Locks: config_sema must be held to serialize changes to the port list + * Locks: config_mutex must be held to serialize changes to the port list * * All port internal structures are set up and the sysfs entry is generated. * d_id is used to enqueue ports with a well known address like the Directory @@ -602,7 +641,13 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn, u32 status, u32 d_id) { struct zfcp_port *port; - int retval; + + read_lock_irq(&zfcp_data.config_lock); + if (zfcp_get_port_by_wwpn(adapter, wwpn)) { + read_unlock_irq(&zfcp_data.config_lock); + return ERR_PTR(-EINVAL); + } + read_unlock_irq(&zfcp_data.config_lock); port = kzalloc(sizeof(struct zfcp_port), GFP_KERNEL); if (!port) @@ -610,7 +655,7 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn, init_waitqueue_head(&port->remove_wq); INIT_LIST_HEAD(&port->unit_list_head); - INIT_WORK(&port->gid_pn_work, zfcp_erp_port_strategy_open_lookup); + INIT_WORK(&port->gid_pn_work, zfcp_fc_port_did_lookup); INIT_WORK(&port->test_link_work, zfcp_fc_link_test_work); INIT_WORK(&port->rport_work, zfcp_scsi_rport_work); @@ -623,29 +668,24 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn, atomic_set_mask(status | ZFCP_STATUS_COMMON_REMOVE, &port->status); atomic_set(&port->refcount, 0); - dev_set_name(&port->sysfs_device, "0x%016llx", - (unsigned long long)wwpn); + if (dev_set_name(&port->sysfs_device, "0x%016llx", + (unsigned long long)wwpn)) { + kfree(port); + return ERR_PTR(-ENOMEM); + } port->sysfs_device.parent = &adapter->ccw_device->dev; - port->sysfs_device.release = zfcp_sysfs_port_release; dev_set_drvdata(&port->sysfs_device, port); - read_lock_irq(&zfcp_data.config_lock); - if (zfcp_get_port_by_wwpn(adapter, wwpn)) { - read_unlock_irq(&zfcp_data.config_lock); - goto err_out_free; + if (device_register(&port->sysfs_device)) { + put_device(&port->sysfs_device); + return ERR_PTR(-EINVAL); } - read_unlock_irq(&zfcp_data.config_lock); - if (device_register(&port->sysfs_device)) - goto err_out_free; - - retval = sysfs_create_group(&port->sysfs_device.kobj, - &zfcp_sysfs_port_attrs); - - if (retval) { + if (sysfs_create_group(&port->sysfs_device.kobj, + &zfcp_sysfs_port_attrs)) { device_unregister(&port->sysfs_device); - goto err_out; + return ERR_PTR(-EINVAL); } zfcp_port_get(port); @@ -659,11 +699,6 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn, zfcp_adapter_get(adapter); return port; - -err_out_free: - kfree(port); -err_out: - return ERR_PTR(-EINVAL); } /** @@ -672,12 +707,11 @@ err_out: */ void zfcp_port_dequeue(struct zfcp_port *port) { - wait_event(port->remove_wq, atomic_read(&port->refcount) == 0); write_lock_irq(&zfcp_data.config_lock); list_del(&port->list); write_unlock_irq(&zfcp_data.config_lock); - if (port->rport) - port->rport->dd_data = NULL; + wait_event(port->remove_wq, atomic_read(&port->refcount) == 0); + cancel_work_sync(&port->rport_work); /* usually not necessary */ zfcp_adapter_put(port->adapter); sysfs_remove_group(&port->sysfs_device.kobj, &zfcp_sysfs_port_attrs); device_unregister(&port->sysfs_device); diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c index d9da5c4..0c90f8e 100644 --- a/drivers/s390/scsi/zfcp_ccw.c +++ b/drivers/s390/scsi/zfcp_ccw.c @@ -18,12 +18,15 @@ static int zfcp_ccw_suspend(struct ccw_device *cdev) { struct zfcp_adapter *adapter = dev_get_drvdata(&cdev->dev); - down(&zfcp_data.config_sema); + if (!adapter) + return 0; + + mutex_lock(&zfcp_data.config_mutex); zfcp_erp_adapter_shutdown(adapter, 0, "ccsusp1", NULL); zfcp_erp_wait(adapter); - up(&zfcp_data.config_sema); + mutex_unlock(&zfcp_data.config_mutex); return 0; } @@ -33,6 +36,9 @@ static int zfcp_ccw_activate(struct ccw_device *cdev) { struct zfcp_adapter *adapter = dev_get_drvdata(&cdev->dev); + if (!adapter) + return 0; + zfcp_erp_modify_adapter_status(adapter, "ccresu1", NULL, ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET); zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, @@ -63,25 +69,14 @@ int zfcp_ccw_priv_sch(struct zfcp_adapter *adapter) * zfcp_ccw_probe - probe function of zfcp driver * @ccw_device: pointer to belonging ccw device * - * This function gets called by the common i/o layer and sets up the initial - * data structures for each fcp adapter, which was detected by the system. - * Also the sysfs files for this adapter will be created by this function. - * In addition the nameserver port will be added to the ports of the adapter - * and its sysfs representation will be created too. + * This function gets called by the common i/o layer for each FCP + * device found on the current system. This is only a stub to make cio + * work: To only allocate adapter resources for devices actually used, + * the allocation is deferred to the first call to ccw_set_online. */ static int zfcp_ccw_probe(struct ccw_device *ccw_device) { - int retval = 0; - - down(&zfcp_data.config_sema); - if (zfcp_adapter_enqueue(ccw_device)) { - dev_err(&ccw_device->dev, - "Setting up data structures for the " - "FCP adapter failed\n"); - retval = -EINVAL; - } - up(&zfcp_data.config_sema); - return retval; + return 0; } /** @@ -102,8 +97,11 @@ static void zfcp_ccw_remove(struct ccw_device *ccw_device) LIST_HEAD(port_remove_lh); ccw_device_set_offline(ccw_device); - down(&zfcp_data.config_sema); + + mutex_lock(&zfcp_data.config_mutex); adapter = dev_get_drvdata(&ccw_device->dev); + if (!adapter) + goto out; write_lock_irq(&zfcp_data.config_lock); list_for_each_entry_safe(port, p, &adapter->port_list_head, list) { @@ -129,29 +127,41 @@ static void zfcp_ccw_remove(struct ccw_device *ccw_device) wait_event(adapter->remove_wq, atomic_read(&adapter->refcount) == 0); zfcp_adapter_dequeue(adapter); - up(&zfcp_data.config_sema); +out: + mutex_unlock(&zfcp_data.config_mutex); } /** * zfcp_ccw_set_online - set_online function of zfcp driver * @ccw_device: pointer to belonging ccw device * - * This function gets called by the common i/o layer and sets an adapter - * into state online. Setting an fcp device online means that it will be - * registered with the SCSI stack, that the QDIO queues will be set up - * and that the adapter will be opened (asynchronously). + * This function gets called by the common i/o layer and sets an + * adapter into state online. The first call will allocate all + * adapter resources that will be retained until the device is removed + * via zfcp_ccw_remove. + * + * Setting an fcp device online means that it will be registered with + * the SCSI stack, that the QDIO queues will be set up and that the + * adapter will be opened. */ static int zfcp_ccw_set_online(struct ccw_device *ccw_device) { struct zfcp_adapter *adapter; - int retval; + int ret = 0; - down(&zfcp_data.config_sema); + mutex_lock(&zfcp_data.config_mutex); adapter = dev_get_drvdata(&ccw_device->dev); - retval = zfcp_erp_thread_setup(adapter); - if (retval) - goto out; + if (!adapter) { + ret = zfcp_adapter_enqueue(ccw_device); + if (ret) { + dev_err(&ccw_device->dev, + "Setting up data structures for the " + "FCP adapter failed\n"); + goto out; + } + adapter = dev_get_drvdata(&ccw_device->dev); + } /* initialize request counter */ BUG_ON(!zfcp_reqlist_isempty(adapter)); @@ -162,13 +172,11 @@ static int zfcp_ccw_set_online(struct ccw_device *ccw_device) zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, "ccsonl2", NULL); zfcp_erp_wait(adapter); - up(&zfcp_data.config_sema); - flush_work(&adapter->scan_work); - return 0; - - out: - up(&zfcp_data.config_sema); - return retval; +out: + mutex_unlock(&zfcp_data.config_mutex); + if (!ret) + flush_work(&adapter->scan_work); + return ret; } /** @@ -182,12 +190,15 @@ static int zfcp_ccw_set_offline(struct ccw_device *ccw_device) { struct zfcp_adapter *adapter; - down(&zfcp_data.config_sema); + mutex_lock(&zfcp_data.config_mutex); adapter = dev_get_drvdata(&ccw_device->dev); + if (!adapter) + goto out; + zfcp_erp_adapter_shutdown(adapter, 0, "ccsoff1", NULL); zfcp_erp_wait(adapter); - zfcp_erp_thread_kill(adapter); - up(&zfcp_data.config_sema); + mutex_unlock(&zfcp_data.config_mutex); +out: return 0; } @@ -240,11 +251,12 @@ static void zfcp_ccw_shutdown(struct ccw_device *cdev) { struct zfcp_adapter *adapter; - down(&zfcp_data.config_sema); + mutex_lock(&zfcp_data.config_mutex); adapter = dev_get_drvdata(&cdev->dev); zfcp_erp_adapter_shutdown(adapter, 0, "ccshut1", NULL); zfcp_erp_wait(adapter); - up(&zfcp_data.config_sema); + zfcp_erp_thread_kill(adapter); + mutex_unlock(&zfcp_data.config_mutex); } static struct ccw_driver zfcp_ccw_driver = { diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c index b99b87c..215b707 100644 --- a/drivers/s390/scsi/zfcp_dbf.c +++ b/drivers/s390/scsi/zfcp_dbf.c @@ -3,7 +3,7 @@ * * Debug traces for zfcp. * - * Copyright IBM Corporation 2002, 2008 + * Copyright IBM Corporation 2002, 2009 */ #define KMSG_COMPONENT "zfcp" @@ -11,6 +11,7 @@ #include <linux/ctype.h> #include <asm/debug.h> +#include "zfcp_dbf.h" #include "zfcp_ext.h" static u32 dbfsize = 4; @@ -37,19 +38,6 @@ static void zfcp_dbf_hexdump(debug_info_t *dbf, void *to, int to_len, } } -/* FIXME: this duplicate this code in s390 debug feature */ -static void zfcp_dbf_timestamp(unsigned long long stck, struct timespec *time) -{ - unsigned long long sec; - - stck -= 0x8126d60e46000000LL - (0x3c26700LL * 1000000 * 4096); - sec = stck >> 12; - do_div(sec, 1000000); - time->tv_sec = sec; - stck -= (sec * 1000000) << 12; - time->tv_nsec = ((stck * 1000) >> 12); -} - static void zfcp_dbf_tag(char **p, const char *label, const char *tag) { int i; @@ -106,7 +94,7 @@ static int zfcp_dbf_view_header(debug_info_t *id, struct debug_view *view, char *p = out_buf; if (strncmp(dump->tag, "dump", ZFCP_DBF_TAG_SIZE) != 0) { - zfcp_dbf_timestamp(entry->id.stck, &t); + stck_to_timespec(entry->id.stck, &t); zfcp_dbf_out(&p, "timestamp", "%011lu:%06lu", t.tv_sec, t.tv_nsec); zfcp_dbf_out(&p, "cpu", "%02i", entry->id.fields.cpuid); @@ -119,13 +107,10 @@ static int zfcp_dbf_view_header(debug_info_t *id, struct debug_view *view, return p - out_buf; } -/** - * zfcp_hba_dbf_event_fsf_response - trace event for request completion - * @fsf_req: request that has been completed - */ -void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req) +void _zfcp_dbf_hba_fsf_response(const char *tag2, int level, + struct zfcp_fsf_req *fsf_req, + struct zfcp_dbf *dbf) { - struct zfcp_adapter *adapter = fsf_req->adapter; struct fsf_qtcb *qtcb = fsf_req->qtcb; union fsf_prot_status_qual *prot_status_qual = &qtcb->prefix.prot_status_qual; @@ -134,33 +119,14 @@ void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req) struct zfcp_port *port; struct zfcp_unit *unit; struct zfcp_send_els *send_els; - struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf; - struct zfcp_hba_dbf_record_response *response = &rec->u.response; - int level; + struct zfcp_dbf_hba_record *rec = &dbf->hba_buf; + struct zfcp_dbf_hba_record_response *response = &rec->u.response; unsigned long flags; - spin_lock_irqsave(&adapter->hba_dbf_lock, flags); + spin_lock_irqsave(&dbf->hba_lock, flags); memset(rec, 0, sizeof(*rec)); strncpy(rec->tag, "resp", ZFCP_DBF_TAG_SIZE); - - if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) && - (qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) { - strncpy(rec->tag2, "perr", ZFCP_DBF_TAG_SIZE); - level = 1; - } else if (qtcb->header.fsf_status != FSF_GOOD) { - strncpy(rec->tag2, "ferr", ZFCP_DBF_TAG_SIZE); - level = 1; - } else if ((fsf_req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) || - (fsf_req->fsf_command == FSF_QTCB_OPEN_LUN)) { - strncpy(rec->tag2, "open", ZFCP_DBF_TAG_SIZE); - level = 4; - } else if (qtcb->header.log_length) { - strncpy(rec->tag2, "qtcb", ZFCP_DBF_TAG_SIZE); - level = 5; - } else { - strncpy(rec->tag2, "norm", ZFCP_DBF_TAG_SIZE); - level = 6; - } + strncpy(rec->tag2, tag2, ZFCP_DBF_TAG_SIZE); response->fsf_command = fsf_req->fsf_command; response->fsf_reqid = fsf_req->req_id; @@ -173,9 +139,9 @@ void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req) memcpy(response->fsf_status_qual, fsf_status_qual, FSF_STATUS_QUALIFIER_SIZE); response->fsf_req_status = fsf_req->status; - response->sbal_first = fsf_req->sbal_first; - response->sbal_last = fsf_req->sbal_last; - response->sbal_response = fsf_req->sbal_response; + response->sbal_first = fsf_req->queue_req.sbal_first; + response->sbal_last = fsf_req->queue_req.sbal_last; + response->sbal_response = fsf_req->queue_req.sbal_response; response->pool = fsf_req->pool != NULL; response->erp_action = (unsigned long)fsf_req->erp_action; @@ -224,7 +190,7 @@ void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req) break; } - debug_event(adapter->hba_dbf, level, rec, sizeof(*rec)); + debug_event(dbf->hba, level, rec, sizeof(*rec)); /* have fcp channel microcode fixed to use as little as possible */ if (fsf_req->fsf_command != FSF_QTCB_FCP_CMND) { @@ -232,31 +198,25 @@ void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req) char *buf = (char *)qtcb + qtcb->header.log_start; int len = qtcb->header.log_length; for (; len && !buf[len - 1]; len--); - zfcp_dbf_hexdump(adapter->hba_dbf, rec, sizeof(*rec), level, - buf, len); + zfcp_dbf_hexdump(dbf->hba, rec, sizeof(*rec), level, buf, + len); } - spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags); + spin_unlock_irqrestore(&dbf->hba_lock, flags); } -/** - * zfcp_hba_dbf_event_fsf_unsol - trace event for an unsolicited status buffer - * @tag: tag indicating which kind of unsolicited status has been received - * @adapter: adapter that has issued the unsolicited status buffer - * @status_buffer: buffer containing payload of unsolicited status - */ -void zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter, - struct fsf_status_read_buffer *status_buffer) +void _zfcp_dbf_hba_fsf_unsol(const char *tag, int level, struct zfcp_dbf *dbf, + struct fsf_status_read_buffer *status_buffer) { - struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf; + struct zfcp_dbf_hba_record *rec = &dbf->hba_buf; unsigned long flags; - spin_lock_irqsave(&adapter->hba_dbf_lock, flags); + spin_lock_irqsave(&dbf->hba_lock, flags); memset(rec, 0, sizeof(*rec)); strncpy(rec->tag, "stat", ZFCP_DBF_TAG_SIZE); strncpy(rec->tag2, tag, ZFCP_DBF_TAG_SIZE); - rec->u.status.failed = atomic_read(&adapter->stat_miss); + rec->u.status.failed = atomic_read(&dbf->adapter->stat_miss); if (status_buffer != NULL) { rec->u.status.status_type = status_buffer->status_type; rec->u.status.status_subtype = status_buffer->status_subtype; @@ -293,63 +253,61 @@ void zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter, &status_buffer->payload, rec->u.status.payload_size); } - debug_event(adapter->hba_dbf, 2, rec, sizeof(*rec)); - spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags); + debug_event(dbf->hba, level, rec, sizeof(*rec)); + spin_unlock_irqrestore(&dbf->hba_lock, flags); } /** - * zfcp_hba_dbf_event_qdio - trace event for QDIO related failure - * @adapter: adapter affected by this QDIO related event + * zfcp_dbf_hba_qdio - trace event for QDIO related failure + * @qdio: qdio structure affected by this QDIO related event * @qdio_error: as passed by qdio module * @sbal_index: first buffer with error condition, as passed by qdio module * @sbal_count: number of buffers affected, as passed by qdio module */ -void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter, - unsigned int qdio_error, int sbal_index, - int sbal_count) +void zfcp_dbf_hba_qdio(struct zfcp_dbf *dbf, unsigned int qdio_error, + int sbal_index, int sbal_count) { - struct zfcp_hba_dbf_record *r = &adapter->hba_dbf_buf; + struct zfcp_dbf_hba_record *r = &dbf->hba_buf; unsigned long flags; - spin_lock_irqsave(&adapter->hba_dbf_lock, flags); + spin_lock_irqsave(&dbf->hba_lock, flags); memset(r, 0, sizeof(*r)); strncpy(r->tag, "qdio", ZFCP_DBF_TAG_SIZE); r->u.qdio.qdio_error = qdio_error; r->u.qdio.sbal_index = sbal_index; r->u.qdio.sbal_count = sbal_count; - debug_event(adapter->hba_dbf, 0, r, sizeof(*r)); - spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags); + debug_event(dbf->hba, 0, r, sizeof(*r)); + spin_unlock_irqrestore(&dbf->hba_lock, flags); } /** - * zfcp_hba_dbf_event_berr - trace event for bit error threshold - * @adapter: adapter affected by this QDIO related event + * zfcp_dbf_hba_berr - trace event for bit error threshold + * @dbf: dbf structure affected by this QDIO related event * @req: fsf request */ -void zfcp_hba_dbf_event_berr(struct zfcp_adapter *adapter, - struct zfcp_fsf_req *req) +void zfcp_dbf_hba_berr(struct zfcp_dbf *dbf, struct zfcp_fsf_req *req) { - struct zfcp_hba_dbf_record *r = &adapter->hba_dbf_buf; + struct zfcp_dbf_hba_record *r = &dbf->hba_buf; struct fsf_status_read_buffer *sr_buf = req->data; struct fsf_bit_error_payload *err = &sr_buf->payload.bit_error; unsigned long flags; - spin_lock_irqsave(&adapter->hba_dbf_lock, flags); + spin_lock_irqsave(&dbf->hba_lock, flags); memset(r, 0, sizeof(*r)); strncpy(r->tag, "berr", ZFCP_DBF_TAG_SIZE); memcpy(&r->u.berr, err, sizeof(struct fsf_bit_error_payload)); - debug_event(adapter->hba_dbf, 0, r, sizeof(*r)); - spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags); + debug_event(dbf->hba, 0, r, sizeof(*r)); + spin_unlock_irqrestore(&dbf->hba_lock, flags); } -static void zfcp_hba_dbf_view_response(char **p, - struct zfcp_hba_dbf_record_response *r) +static void zfcp_dbf_hba_view_response(char **p, + struct zfcp_dbf_hba_record_response *r) { struct timespec t; zfcp_dbf_out(p, "fsf_command", "0x%08x", r->fsf_command); zfcp_dbf_out(p, "fsf_reqid", "0x%0Lx", r->fsf_reqid); zfcp_dbf_out(p, "fsf_seqno", "0x%08x", r->fsf_seqno); - zfcp_dbf_timestamp(r->fsf_issued, &t); + stck_to_timespec(r->fsf_issued, &t); zfcp_dbf_out(p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec); zfcp_dbf_out(p, "fsf_prot_status", "0x%08x", r->fsf_prot_status); zfcp_dbf_out(p, "fsf_status", "0x%08x", r->fsf_status); @@ -403,8 +361,8 @@ static void zfcp_hba_dbf_view_response(char **p, } } -static void zfcp_hba_dbf_view_status(char **p, - struct zfcp_hba_dbf_record_status *r) +static void zfcp_dbf_hba_view_status(char **p, + struct zfcp_dbf_hba_record_status *r) { zfcp_dbf_out(p, "failed", "0x%02x", r->failed); zfcp_dbf_out(p, "status_type", "0x%08x", r->status_type); @@ -416,14 +374,14 @@ static void zfcp_hba_dbf_view_status(char **p, r->payload_size); } -static void zfcp_hba_dbf_view_qdio(char **p, struct zfcp_hba_dbf_record_qdio *r) +static void zfcp_dbf_hba_view_qdio(char **p, struct zfcp_dbf_hba_record_qdio *r) { zfcp_dbf_out(p, "qdio_error", "0x%08x", r->qdio_error); zfcp_dbf_out(p, "sbal_index", "0x%02x", r->sbal_index); zfcp_dbf_out(p, "sbal_count", "0x%02x", r->sbal_count); } -static void zfcp_hba_dbf_view_berr(char **p, struct fsf_bit_error_payload *r) +static void zfcp_dbf_hba_view_berr(char **p, struct fsf_bit_error_payload *r) { zfcp_dbf_out(p, "link_failures", "%d", r->link_failure_error_count); zfcp_dbf_out(p, "loss_of_sync_err", "%d", r->loss_of_sync_error_count); @@ -447,10 +405,10 @@ static void zfcp_hba_dbf_view_berr(char **p, struct fsf_bit_error_payload *r) r->current_transmit_b2b_credit); } -static int zfcp_hba_dbf_view_format(debug_info_t *id, struct debug_view *view, +static int zfcp_dbf_hba_view_format(debug_info_t *id, struct debug_view *view, char *out_buf, const char *in_buf) { - struct zfcp_hba_dbf_record *r = (struct zfcp_hba_dbf_record *)in_buf; + struct zfcp_dbf_hba_record *r = (struct zfcp_dbf_hba_record *)in_buf; char *p = out_buf; if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0) @@ -461,45 +419,42 @@ static int zfcp_hba_dbf_view_format(debug_info_t *id, struct debug_view *view, zfcp_dbf_tag(&p, "tag2", r->tag2); if (strncmp(r->tag, "resp", ZFCP_DBF_TAG_SIZE) == 0) - zfcp_hba_dbf_view_response(&p, &r->u.response); + zfcp_dbf_hba_view_response(&p, &r->u.response); else if (strncmp(r->tag, "stat", ZFCP_DBF_TAG_SIZE) == 0) - zfcp_hba_dbf_view_status(&p, &r->u.status); + zfcp_dbf_hba_view_status(&p, &r->u.status); else if (strncmp(r->tag, "qdio", ZFCP_DBF_TAG_SIZE) == 0) - zfcp_hba_dbf_view_qdio(&p, &r->u.qdio); + zfcp_dbf_hba_view_qdio(&p, &r->u.qdio); else if (strncmp(r->tag, "berr", ZFCP_DBF_TAG_SIZE) == 0) - zfcp_hba_dbf_view_berr(&p, &r->u.berr); + zfcp_dbf_hba_view_berr(&p, &r->u.berr); if (strncmp(r->tag, "resp", ZFCP_DBF_TAG_SIZE) != 0) p += sprintf(p, "\n"); return p - out_buf; } -static struct debug_view zfcp_hba_dbf_view = { - "structured", - NULL, - &zfcp_dbf_view_header, - &zfcp_hba_dbf_view_format, - NULL, - NULL +static struct debug_view zfcp_dbf_hba_view = { + .name = "structured", + .header_proc = zfcp_dbf_view_header, + .format_proc = zfcp_dbf_hba_view_format, }; -static const char *zfcp_rec_dbf_tags[] = { +static const char *zfcp_dbf_rec_tags[] = { [ZFCP_REC_DBF_ID_THREAD] = "thread", [ZFCP_REC_DBF_ID_TARGET] = "target", [ZFCP_REC_DBF_ID_TRIGGER] = "trigger", [ZFCP_REC_DBF_ID_ACTION] = "action", }; -static int zfcp_rec_dbf_view_format(debug_info_t *id, struct debug_view *view, +static int zfcp_dbf_rec_view_format(debug_info_t *id, struct debug_view *view, char *buf, const char *_rec) { - struct zfcp_rec_dbf_record *r = (struct zfcp_rec_dbf_record *)_rec; + struct zfcp_dbf_rec_record *r = (struct zfcp_dbf_rec_record *)_rec; char *p = buf; char hint[ZFCP_DBF_ID_SIZE + 1]; memcpy(hint, r->id2, ZFCP_DBF_ID_SIZE); hint[ZFCP_DBF_ID_SIZE] = 0; - zfcp_dbf_outs(&p, "tag", zfcp_rec_dbf_tags[r->id]); + zfcp_dbf_outs(&p, "tag", zfcp_dbf_rec_tags[r->id]); zfcp_dbf_outs(&p, "hint", hint); switch (r->id) { case ZFCP_REC_DBF_ID_THREAD: @@ -537,24 +492,22 @@ static int zfcp_rec_dbf_view_format(debug_info_t *id, struct debug_view *view, return p - buf; } -static struct debug_view zfcp_rec_dbf_view = { - "structured", - NULL, - &zfcp_dbf_view_header, - &zfcp_rec_dbf_view_format, - NULL, - NULL +static struct debug_view zfcp_dbf_rec_view = { + .name = "structured", + .header_proc = zfcp_dbf_view_header, + .format_proc = zfcp_dbf_rec_view_format, }; /** - * zfcp_rec_dbf_event_thread - trace event related to recovery thread operation + * zfcp_dbf_rec_thread - trace event related to recovery thread operation * @id2: identifier for event - * @adapter: adapter + * @dbf: reference to dbf structure * This function assumes that the caller is holding erp_lock. */ -void zfcp_rec_dbf_event_thread(char *id2, struct zfcp_adapter *adapter) +void zfcp_dbf_rec_thread(char *id2, struct zfcp_dbf *dbf) { - struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf; + struct zfcp_adapter *adapter = dbf->adapter; + struct zfcp_dbf_rec_record *r = &dbf->rec_buf; unsigned long flags = 0; struct list_head *entry; unsigned ready = 0, running = 0, total; @@ -565,41 +518,41 @@ void zfcp_rec_dbf_event_thread(char *id2, struct zfcp_adapter *adapter) running++; total = adapter->erp_total_count; - spin_lock_irqsave(&adapter->rec_dbf_lock, flags); + spin_lock_irqsave(&dbf->rec_lock, flags); memset(r, 0, sizeof(*r)); r->id = ZFCP_REC_DBF_ID_THREAD; memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE); r->u.thread.total = total; r->u.thread.ready = ready; r->u.thread.running = running; - debug_event(adapter->rec_dbf, 6, r, sizeof(*r)); - spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags); + debug_event(dbf->rec, 6, r, sizeof(*r)); + spin_unlock_irqrestore(&dbf->rec_lock, flags); } /** - * zfcp_rec_dbf_event_thread - trace event related to recovery thread operation + * zfcp_dbf_rec_thread - trace event related to recovery thread operation * @id2: identifier for event * @adapter: adapter * This function assumes that the caller does not hold erp_lock. */ -void zfcp_rec_dbf_event_thread_lock(char *id2, struct zfcp_adapter *adapter) +void zfcp_dbf_rec_thread_lock(char *id2, struct zfcp_dbf *dbf) { + struct zfcp_adapter *adapter = dbf->adapter; unsigned long flags; read_lock_irqsave(&adapter->erp_lock, flags); - zfcp_rec_dbf_event_thread(id2, adapter); + zfcp_dbf_rec_thread(id2, dbf); read_unlock_irqrestore(&adapter->erp_lock, flags); } -static void zfcp_rec_dbf_event_target(char *id2, void *ref, - struct zfcp_adapter *adapter, - atomic_t *status, atomic_t *erp_count, - u64 wwpn, u32 d_id, u64 fcp_lun) +static void zfcp_dbf_rec_target(char *id2, void *ref, struct zfcp_dbf *dbf, + atomic_t *status, atomic_t *erp_count, u64 wwpn, + u32 d_id, u64 fcp_lun) { - struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf; + struct zfcp_dbf_rec_record *r = &dbf->rec_buf; unsigned long flags; - spin_lock_irqsave(&adapter->rec_dbf_lock, flags); + spin_lock_irqsave(&dbf->rec_lock, flags); memset(r, 0, sizeof(*r)); r->id = ZFCP_REC_DBF_ID_TARGET; memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE); @@ -609,56 +562,57 @@ static void zfcp_rec_dbf_event_target(char *id2, void *ref, r->u.target.d_id = d_id; r->u.target.fcp_lun = fcp_lun; r->u.target.erp_count = atomic_read(erp_count); - debug_event(adapter->rec_dbf, 3, r, sizeof(*r)); - spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags); + debug_event(dbf->rec, 3, r, sizeof(*r)); + spin_unlock_irqrestore(&dbf->rec_lock, flags); } /** - * zfcp_rec_dbf_event_adapter - trace event for adapter state change + * zfcp_dbf_rec_adapter - trace event for adapter state change * @id: identifier for trigger of state change * @ref: additional reference (e.g. request) - * @adapter: adapter + * @dbf: reference to dbf structure */ -void zfcp_rec_dbf_event_adapter(char *id, void *ref, - struct zfcp_adapter *adapter) +void zfcp_dbf_rec_adapter(char *id, void *ref, struct zfcp_dbf *dbf) { - zfcp_rec_dbf_event_target(id, ref, adapter, &adapter->status, + struct zfcp_adapter *adapter = dbf->adapter; + + zfcp_dbf_rec_target(id, ref, dbf, &adapter->status, &adapter->erp_counter, 0, 0, 0); } /** - * zfcp_rec_dbf_event_port - trace event for port state change + * zfcp_dbf_rec_port - trace event for port state change * @id: identifier for trigger of state change * @ref: additional reference (e.g. request) * @port: port */ -void zfcp_rec_dbf_event_port(char *id, void *ref, struct zfcp_port *port) +void zfcp_dbf_rec_port(char *id, void *ref, struct zfcp_port *port) { - struct zfcp_adapter *adapter = port->adapter; + struct zfcp_dbf *dbf = port->adapter->dbf; - zfcp_rec_dbf_event_target(id, ref, adapter, &port->status, + zfcp_dbf_rec_target(id, ref, dbf, &port->status, &port->erp_counter, port->wwpn, port->d_id, 0); } /** - * zfcp_rec_dbf_event_unit - trace event for unit state change + * zfcp_dbf_rec_unit - trace event for unit state change * @id: identifier for trigger of state change * @ref: additional reference (e.g. request) * @unit: unit */ -void zfcp_rec_dbf_event_unit(char *id, void *ref, struct zfcp_unit *unit) +void zfcp_dbf_rec_unit(char *id, void *ref, struct zfcp_unit *unit) { struct zfcp_port *port = unit->port; - struct zfcp_adapter *adapter = port->adapter; + struct zfcp_dbf *dbf = port->adapter->dbf; - zfcp_rec_dbf_event_target(id, ref, adapter, &unit->status, + zfcp_dbf_rec_target(id, ref, dbf, &unit->status, &unit->erp_counter, port->wwpn, port->d_id, unit->fcp_lun); } /** - * zfcp_rec_dbf_event_trigger - trace event for triggered error recovery + * zfcp_dbf_rec_trigger - trace event for triggered error recovery * @id2: identifier for error recovery trigger * @ref: additional reference (e.g. request) * @want: originally requested error recovery action @@ -668,14 +622,15 @@ void zfcp_rec_dbf_event_unit(char *id, void *ref, struct zfcp_unit *unit) * @port: port * @unit: unit */ -void zfcp_rec_dbf_event_trigger(char *id2, void *ref, u8 want, u8 need, - void *action, struct zfcp_adapter *adapter, - struct zfcp_port *port, struct zfcp_unit *unit) +void zfcp_dbf_rec_trigger(char *id2, void *ref, u8 want, u8 need, void *action, + struct zfcp_adapter *adapter, struct zfcp_port *port, + struct zfcp_unit *unit) { - struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf; + struct zfcp_dbf *dbf = adapter->dbf; + struct zfcp_dbf_rec_record *r = &dbf->rec_buf; unsigned long flags; - spin_lock_irqsave(&adapter->rec_dbf_lock, flags); + spin_lock_irqsave(&dbf->rec_lock, flags); memset(r, 0, sizeof(*r)); r->id = ZFCP_REC_DBF_ID_TRIGGER; memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE); @@ -692,22 +647,22 @@ void zfcp_rec_dbf_event_trigger(char *id2, void *ref, u8 want, u8 need, r->u.trigger.us = atomic_read(&unit->status); r->u.trigger.fcp_lun = unit->fcp_lun; } - debug_event(adapter->rec_dbf, action ? 1 : 4, r, sizeof(*r)); - spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags); + debug_event(dbf->rec, action ? 1 : 4, r, sizeof(*r)); + spin_unlock_irqrestore(&dbf->rec_lock, flags); } /** - * zfcp_rec_dbf_event_action - trace event showing progress of recovery action + * zfcp_dbf_rec_action - trace event showing progress of recovery action * @id2: identifier * @erp_action: error recovery action struct pointer */ -void zfcp_rec_dbf_event_action(char *id2, struct zfcp_erp_action *erp_action) +void zfcp_dbf_rec_action(char *id2, struct zfcp_erp_action *erp_action) { - struct zfcp_adapter *adapter = erp_action->adapter; - struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf; + struct zfcp_dbf *dbf = erp_action->adapter->dbf; + struct zfcp_dbf_rec_record *r = &dbf->rec_buf; unsigned long flags; - spin_lock_irqsave(&adapter->rec_dbf_lock, flags); + spin_lock_irqsave(&dbf->rec_lock, flags); memset(r, 0, sizeof(*r)); r->id = ZFCP_REC_DBF_ID_ACTION; memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE); @@ -715,26 +670,27 @@ void zfcp_rec_dbf_event_action(char *id2, struct zfcp_erp_action *erp_action) r->u.action.status = erp_action->status; r->u.action.step = erp_action->step; r->u.action.fsf_req = (unsigned long)erp_action->fsf_req; - debug_event(adapter->rec_dbf, 5, r, sizeof(*r)); - spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags); + debug_event(dbf->rec, 5, r, sizeof(*r)); + spin_unlock_irqrestore(&dbf->rec_lock, flags); } /** - * zfcp_san_dbf_event_ct_request - trace event for issued CT request + * zfcp_dbf_san_ct_request - trace event for issued CT request * @fsf_req: request containing issued CT data */ -void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req) +void zfcp_dbf_san_ct_request(struct zfcp_fsf_req *fsf_req) { struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data; struct zfcp_wka_port *wka_port = ct->wka_port; struct zfcp_adapter *adapter = wka_port->adapter; + struct zfcp_dbf *dbf = adapter->dbf; struct ct_hdr *hdr = sg_virt(ct->req); - struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf; - struct zfcp_san_dbf_record_ct_request *oct = &r->u.ct_req; + struct zfcp_dbf_san_record *r = &dbf->san_buf; + struct zfcp_dbf_san_record_ct_request *oct = &r->u.ct_req; int level = 3; unsigned long flags; - spin_lock_irqsave(&adapter->san_dbf_lock, flags); + spin_lock_irqsave(&dbf->san_lock, flags); memset(r, 0, sizeof(*r)); strncpy(r->tag, "octc", ZFCP_DBF_TAG_SIZE); r->fsf_reqid = fsf_req->req_id; @@ -749,28 +705,29 @@ void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req) oct->max_res_size = hdr->max_res_size; oct->len = min((int)ct->req->length - (int)sizeof(struct ct_hdr), ZFCP_DBF_SAN_MAX_PAYLOAD); - debug_event(adapter->san_dbf, level, r, sizeof(*r)); - zfcp_dbf_hexdump(adapter->san_dbf, r, sizeof(*r), level, + debug_event(dbf->san, level, r, sizeof(*r)); + zfcp_dbf_hexdump(dbf->san, r, sizeof(*r), level, (void *)hdr + sizeof(struct ct_hdr), oct->len); - spin_unlock_irqrestore(&adapter->san_dbf_lock, flags); + spin_unlock_irqrestore(&dbf->san_lock, flags); } /** - * zfcp_san_dbf_event_ct_response - trace event for completion of CT request + * zfcp_dbf_san_ct_response - trace event for completion of CT request * @fsf_req: request containing CT response */ -void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req) +void zfcp_dbf_san_ct_response(struct zfcp_fsf_req *fsf_req) { struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data; struct zfcp_wka_port *wka_port = ct->wka_port; struct zfcp_adapter *adapter = wka_port->adapter; struct ct_hdr *hdr = sg_virt(ct->resp); - struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf; - struct zfcp_san_dbf_record_ct_response *rct = &r->u.ct_resp; + struct zfcp_dbf *dbf = adapter->dbf; + struct zfcp_dbf_san_record *r = &dbf->san_buf; + struct zfcp_dbf_san_record_ct_response *rct = &r->u.ct_resp; int level = 3; unsigned long flags; - spin_lock_irqsave(&adapter->san_dbf_lock, flags); + spin_lock_irqsave(&dbf->san_lock, flags); memset(r, 0, sizeof(*r)); strncpy(r->tag, "rctc", ZFCP_DBF_TAG_SIZE); r->fsf_reqid = fsf_req->req_id; @@ -785,22 +742,22 @@ void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req) rct->max_res_size = hdr->max_res_size; rct->len = min((int)ct->resp->length - (int)sizeof(struct ct_hdr), ZFCP_DBF_SAN_MAX_PAYLOAD); - debug_event(adapter->san_dbf, level, r, sizeof(*r)); - zfcp_dbf_hexdump(adapter->san_dbf, r, sizeof(*r), level, + debug_event(dbf->san, level, r, sizeof(*r)); + zfcp_dbf_hexdump(dbf->san, r, sizeof(*r), level, (void *)hdr + sizeof(struct ct_hdr), rct->len); - spin_unlock_irqrestore(&adapter->san_dbf_lock, flags); + spin_unlock_irqrestore(&dbf->san_lock, flags); } -static void zfcp_san_dbf_event_els(const char *tag, int level, - struct zfcp_fsf_req *fsf_req, u32 s_id, - u32 d_id, u8 ls_code, void *buffer, - int buflen) +static void zfcp_dbf_san_els(const char *tag, int level, + struct zfcp_fsf_req *fsf_req, u32 s_id, u32 d_id, + u8 ls_code, void *buffer, int buflen) { struct zfcp_adapter *adapter = fsf_req->adapter; - struct zfcp_san_dbf_record *rec = &adapter->san_dbf_buf; + struct zfcp_dbf *dbf = adapter->dbf; + struct zfcp_dbf_san_record *rec = &dbf->san_buf; unsigned long flags; - spin_lock_irqsave(&adapter->san_dbf_lock, flags); + spin_lock_irqsave(&dbf->san_lock, flags); memset(rec, 0, sizeof(*rec)); strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE); rec->fsf_reqid = fsf_req->req_id; @@ -808,45 +765,45 @@ static void zfcp_san_dbf_event_els(const char *tag, int level, rec->s_id = s_id; rec->d_id = d_id; rec->u.els.ls_code = ls_code; - debug_event(adapter->san_dbf, level, rec, sizeof(*rec)); - zfcp_dbf_hexdump(adapter->san_dbf, rec, sizeof(*rec), level, + debug_event(dbf->san, level, rec, sizeof(*rec)); + zfcp_dbf_hexdump(dbf->san, rec, sizeof(*rec), level, buffer, min(buflen, ZFCP_DBF_SAN_MAX_PAYLOAD)); - spin_unlock_irqrestore(&adapter->san_dbf_lock, flags); + spin_unlock_irqrestore(&dbf->san_lock, flags); } /** - * zfcp_san_dbf_event_els_request - trace event for issued ELS + * zfcp_dbf_san_els_request - trace event for issued ELS * @fsf_req: request containing issued ELS */ -void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *fsf_req) +void zfcp_dbf_san_els_request(struct zfcp_fsf_req *fsf_req) { struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data; - zfcp_san_dbf_event_els("oels", 2, fsf_req, + zfcp_dbf_san_els("oels", 2, fsf_req, fc_host_port_id(els->adapter->scsi_host), els->d_id, *(u8 *) sg_virt(els->req), sg_virt(els->req), els->req->length); } /** - * zfcp_san_dbf_event_els_response - trace event for completed ELS + * zfcp_dbf_san_els_response - trace event for completed ELS * @fsf_req: request containing ELS response */ -void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *fsf_req) +void zfcp_dbf_san_els_response(struct zfcp_fsf_req *fsf_req) { struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data; - zfcp_san_dbf_event_els("rels", 2, fsf_req, els->d_id, + zfcp_dbf_san_els("rels", 2, fsf_req, els->d_id, fc_host_port_id(els->adapter->scsi_host), *(u8 *)sg_virt(els->req), sg_virt(els->resp), els->resp->length); } /** - * zfcp_san_dbf_event_incoming_els - trace event for incomig ELS + * zfcp_dbf_san_incoming_els - trace event for incomig ELS * @fsf_req: request containing unsolicited status buffer with incoming ELS */ -void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *fsf_req) +void zfcp_dbf_san_incoming_els(struct zfcp_fsf_req *fsf_req) { struct zfcp_adapter *adapter = fsf_req->adapter; struct fsf_status_read_buffer *buf = @@ -854,16 +811,16 @@ void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *fsf_req) int length = (int)buf->length - (int)((void *)&buf->payload - (void *)buf); - zfcp_san_dbf_event_els("iels", 1, fsf_req, buf->d_id, + zfcp_dbf_san_els("iels", 1, fsf_req, buf->d_id, fc_host_port_id(adapter->scsi_host), buf->payload.data[0], (void *)buf->payload.data, length); } -static int zfcp_san_dbf_view_format(debug_info_t *id, struct debug_view *view, +static int zfcp_dbf_san_view_format(debug_info_t *id, struct debug_view *view, char *out_buf, const char *in_buf) { - struct zfcp_san_dbf_record *r = (struct zfcp_san_dbf_record *)in_buf; + struct zfcp_dbf_san_record *r = (struct zfcp_dbf_san_record *)in_buf; char *p = out_buf; if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0) @@ -876,7 +833,7 @@ static int zfcp_san_dbf_view_format(debug_info_t *id, struct debug_view *view, zfcp_dbf_out(&p, "d_id", "0x%06x", r->d_id); if (strncmp(r->tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) { - struct zfcp_san_dbf_record_ct_request *ct = &r->u.ct_req; + struct zfcp_dbf_san_record_ct_request *ct = &r->u.ct_req; zfcp_dbf_out(&p, "cmd_req_code", "0x%04x", ct->cmd_req_code); zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision); zfcp_dbf_out(&p, "gs_type", "0x%02x", ct->gs_type); @@ -884,7 +841,7 @@ static int zfcp_san_dbf_view_format(debug_info_t *id, struct debug_view *view, zfcp_dbf_out(&p, "options", "0x%02x", ct->options); zfcp_dbf_out(&p, "max_res_size", "0x%04x", ct->max_res_size); } else if (strncmp(r->tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) { - struct zfcp_san_dbf_record_ct_response *ct = &r->u.ct_resp; + struct zfcp_dbf_san_record_ct_response *ct = &r->u.ct_resp; zfcp_dbf_out(&p, "cmd_rsp_code", "0x%04x", ct->cmd_rsp_code); zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision); zfcp_dbf_out(&p, "reason_code", "0x%02x", ct->reason_code); @@ -894,35 +851,30 @@ static int zfcp_san_dbf_view_format(debug_info_t *id, struct debug_view *view, } else if (strncmp(r->tag, "oels", ZFCP_DBF_TAG_SIZE) == 0 || strncmp(r->tag, "rels", ZFCP_DBF_TAG_SIZE) == 0 || strncmp(r->tag, "iels", ZFCP_DBF_TAG_SIZE) == 0) { - struct zfcp_san_dbf_record_els *els = &r->u.els; + struct zfcp_dbf_san_record_els *els = &r->u.els; zfcp_dbf_out(&p, "ls_code", "0x%02x", els->ls_code); } return p - out_buf; } -static struct debug_view zfcp_san_dbf_view = { - "structured", - NULL, - &zfcp_dbf_view_header, - &zfcp_san_dbf_view_format, - NULL, - NULL +static struct debug_view zfcp_dbf_san_view = { + .name = "structured", + .header_proc = zfcp_dbf_view_header, + .format_proc = zfcp_dbf_san_view_format, }; -static void zfcp_scsi_dbf_event(const char *tag, const char *tag2, int level, - struct zfcp_adapter *adapter, - struct scsi_cmnd *scsi_cmnd, - struct zfcp_fsf_req *fsf_req, - unsigned long old_req_id) +void _zfcp_dbf_scsi(const char *tag, const char *tag2, int level, + struct zfcp_dbf *dbf, struct scsi_cmnd *scsi_cmnd, + struct zfcp_fsf_req *fsf_req, unsigned long old_req_id) { - struct zfcp_scsi_dbf_record *rec = &adapter->scsi_dbf_buf; + struct zfcp_dbf_scsi_record *rec = &dbf->scsi_buf; struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)rec; unsigned long flags; struct fcp_rsp_iu *fcp_rsp; char *fcp_rsp_info = NULL, *fcp_sns_info = NULL; int offset = 0, buflen = 0; - spin_lock_irqsave(&adapter->scsi_dbf_lock, flags); + spin_lock_irqsave(&dbf->scsi_lock, flags); do { memset(rec, 0, sizeof(*rec)); if (offset == 0) { @@ -976,68 +928,20 @@ static void zfcp_scsi_dbf_event(const char *tag, const char *tag2, int level, dump->offset = offset; dump->size = min(buflen - offset, (int)sizeof(struct - zfcp_scsi_dbf_record) - + zfcp_dbf_scsi_record) - (int)sizeof(struct zfcp_dbf_dump)); memcpy(dump->data, fcp_sns_info + offset, dump->size); offset += dump->size; } - debug_event(adapter->scsi_dbf, level, rec, sizeof(*rec)); + debug_event(dbf->scsi, level, rec, sizeof(*rec)); } while (offset < buflen); - spin_unlock_irqrestore(&adapter->scsi_dbf_lock, flags); -} - -/** - * zfcp_scsi_dbf_event_result - trace event for SCSI command completion - * @tag: tag indicating success or failure of SCSI command - * @level: trace level applicable for this event - * @adapter: adapter that has been used to issue the SCSI command - * @scsi_cmnd: SCSI command pointer - * @fsf_req: request used to issue SCSI command (might be NULL) - */ -void zfcp_scsi_dbf_event_result(const char *tag, int level, - struct zfcp_adapter *adapter, - struct scsi_cmnd *scsi_cmnd, - struct zfcp_fsf_req *fsf_req) -{ - zfcp_scsi_dbf_event("rslt", tag, level, adapter, scsi_cmnd, fsf_req, 0); + spin_unlock_irqrestore(&dbf->scsi_lock, flags); } -/** - * zfcp_scsi_dbf_event_abort - trace event for SCSI command abort - * @tag: tag indicating success or failure of abort operation - * @adapter: adapter thas has been used to issue SCSI command to be aborted - * @scsi_cmnd: SCSI command to be aborted - * @new_fsf_req: request containing abort (might be NULL) - * @old_req_id: identifier of request containg SCSI command to be aborted - */ -void zfcp_scsi_dbf_event_abort(const char *tag, struct zfcp_adapter *adapter, - struct scsi_cmnd *scsi_cmnd, - struct zfcp_fsf_req *new_fsf_req, - unsigned long old_req_id) -{ - zfcp_scsi_dbf_event("abrt", tag, 1, adapter, scsi_cmnd, new_fsf_req, - old_req_id); -} - -/** - * zfcp_scsi_dbf_event_devreset - trace event for Logical Unit or Target Reset - * @tag: tag indicating success or failure of reset operation - * @flag: indicates type of reset (Target Reset, Logical Unit Reset) - * @unit: unit that needs reset - * @scsi_cmnd: SCSI command which caused this error recovery - */ -void zfcp_scsi_dbf_event_devreset(const char *tag, u8 flag, - struct zfcp_unit *unit, - struct scsi_cmnd *scsi_cmnd) -{ - zfcp_scsi_dbf_event(flag == FCP_TARGET_RESET ? "trst" : "lrst", tag, 1, - unit->port->adapter, scsi_cmnd, NULL, 0); -} - -static int zfcp_scsi_dbf_view_format(debug_info_t *id, struct debug_view *view, +static int zfcp_dbf_scsi_view_format(debug_info_t *id, struct debug_view *view, char *out_buf, const char *in_buf) { - struct zfcp_scsi_dbf_record *r = (struct zfcp_scsi_dbf_record *)in_buf; + struct zfcp_dbf_scsi_record *r = (struct zfcp_dbf_scsi_record *)in_buf; struct timespec t; char *p = out_buf; @@ -1059,7 +963,7 @@ static int zfcp_scsi_dbf_view_format(debug_info_t *id, struct debug_view *view, zfcp_dbf_out(&p, "old_fsf_reqid", "0x%0Lx", r->old_fsf_reqid); zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid); zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno); - zfcp_dbf_timestamp(r->fsf_issued, &t); + stck_to_timespec(r->fsf_issued, &t); zfcp_dbf_out(&p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec); if (strncmp(r->tag, "rslt", ZFCP_DBF_TAG_SIZE) == 0) { @@ -1078,84 +982,96 @@ static int zfcp_scsi_dbf_view_format(debug_info_t *id, struct debug_view *view, return p - out_buf; } -static struct debug_view zfcp_scsi_dbf_view = { - "structured", - NULL, - &zfcp_dbf_view_header, - &zfcp_scsi_dbf_view_format, - NULL, - NULL +static struct debug_view zfcp_dbf_scsi_view = { + .name = "structured", + .header_proc = zfcp_dbf_view_header, + .format_proc = zfcp_dbf_scsi_view_format, }; +static debug_info_t *zfcp_dbf_reg(const char *name, int level, + struct debug_view *view, int size) +{ + struct debug_info *d; + + d = debug_register(name, dbfsize, level, size); + if (!d) + return NULL; + + debug_register_view(d, &debug_hex_ascii_view); + debug_register_view(d, view); + debug_set_level(d, level); + + return d; +} + /** * zfcp_adapter_debug_register - registers debug feature for an adapter * @adapter: pointer to adapter for which debug features should be registered * return: -ENOMEM on error, 0 otherwise */ -int zfcp_adapter_debug_register(struct zfcp_adapter *adapter) +int zfcp_dbf_adapter_register(struct zfcp_adapter *adapter) { char dbf_name[DEBUG_MAX_NAME_LEN]; + struct zfcp_dbf *dbf; + + dbf = kmalloc(sizeof(struct zfcp_dbf), GFP_KERNEL); + if (!dbf) + return -ENOMEM; + + dbf->adapter = adapter; + + spin_lock_init(&dbf->hba_lock); + spin_lock_init(&dbf->san_lock); + spin_lock_init(&dbf->scsi_lock); + spin_lock_init(&dbf->rec_lock); /* debug feature area which records recovery activity */ sprintf(dbf_name, "zfcp_%s_rec", dev_name(&adapter->ccw_device->dev)); - adapter->rec_dbf = debug_register(dbf_name, dbfsize, 1, - sizeof(struct zfcp_rec_dbf_record)); - if (!adapter->rec_dbf) - goto failed; - debug_register_view(adapter->rec_dbf, &debug_hex_ascii_view); - debug_register_view(adapter->rec_dbf, &zfcp_rec_dbf_view); - debug_set_level(adapter->rec_dbf, 3); + dbf->rec = zfcp_dbf_reg(dbf_name, 3, &zfcp_dbf_rec_view, + sizeof(struct zfcp_dbf_rec_record)); + if (!dbf->rec) + goto err_out; /* debug feature area which records HBA (FSF and QDIO) conditions */ sprintf(dbf_name, "zfcp_%s_hba", dev_name(&adapter->ccw_device->dev)); - adapter->hba_dbf = debug_register(dbf_name, dbfsize, 1, - sizeof(struct zfcp_hba_dbf_record)); - if (!adapter->hba_dbf) - goto failed; - debug_register_view(adapter->hba_dbf, &debug_hex_ascii_view); - debug_register_view(adapter->hba_dbf, &zfcp_hba_dbf_view); - debug_set_level(adapter->hba_dbf, 3); + dbf->hba = zfcp_dbf_reg(dbf_name, 3, &zfcp_dbf_hba_view, + sizeof(struct zfcp_dbf_hba_record)); + if (!dbf->hba) + goto err_out; /* debug feature area which records SAN command failures and recovery */ sprintf(dbf_name, "zfcp_%s_san", dev_name(&adapter->ccw_device->dev)); - adapter->san_dbf = debug_register(dbf_name, dbfsize, 1, - sizeof(struct zfcp_san_dbf_record)); - if (!adapter->san_dbf) - goto failed; - debug_register_view(adapter->san_dbf, &debug_hex_ascii_view); - debug_register_view(adapter->san_dbf, &zfcp_san_dbf_view); - debug_set_level(adapter->san_dbf, 6); + dbf->san = zfcp_dbf_reg(dbf_name, 6, &zfcp_dbf_san_view, + sizeof(struct zfcp_dbf_san_record)); + if (!dbf->san) + goto err_out; /* debug feature area which records SCSI command failures and recovery */ sprintf(dbf_name, "zfcp_%s_scsi", dev_name(&adapter->ccw_device->dev)); - adapter->scsi_dbf = debug_register(dbf_name, dbfsize, 1, - sizeof(struct zfcp_scsi_dbf_record)); - if (!adapter->scsi_dbf) - goto failed; - debug_register_view(adapter->scsi_dbf, &debug_hex_ascii_view); - debug_register_view(adapter->scsi_dbf, &zfcp_scsi_dbf_view); - debug_set_level(adapter->scsi_dbf, 3); + dbf->scsi = zfcp_dbf_reg(dbf_name, 3, &zfcp_dbf_scsi_view, + sizeof(struct zfcp_dbf_scsi_record)); + if (!dbf->scsi) + goto err_out; + adapter->dbf = dbf; return 0; - failed: - zfcp_adapter_debug_unregister(adapter); - +err_out: + zfcp_dbf_adapter_unregister(dbf); return -ENOMEM; } /** * zfcp_adapter_debug_unregister - unregisters debug feature for an adapter - * @adapter: pointer to adapter for which debug features should be unregistered + * @dbf: pointer to dbf for which debug features should be unregistered */ -void zfcp_adapter_debug_unregister(struct zfcp_adapter *adapter) +void zfcp_dbf_adapter_unregister(struct zfcp_dbf *dbf) { - debug_unregister(adapter->scsi_dbf); - debug_unregister(adapter->san_dbf); - debug_unregister(adapter->hba_dbf); - debug_unregister(adapter->rec_dbf); - adapter->scsi_dbf = NULL; - adapter->san_dbf = NULL; - adapter->hba_dbf = NULL; - adapter->rec_dbf = NULL; + debug_unregister(dbf->scsi); + debug_unregister(dbf->san); + debug_unregister(dbf->hba); + debug_unregister(dbf->rec); + dbf->adapter->dbf = NULL; + kfree(dbf); } + diff --git a/drivers/s390/scsi/zfcp_dbf.h b/drivers/s390/scsi/zfcp_dbf.h index a573f73..6b1461e 100644 --- a/drivers/s390/scsi/zfcp_dbf.h +++ b/drivers/s390/scsi/zfcp_dbf.h @@ -2,7 +2,7 @@ * This file is part of the zfcp device driver for * FCP adapters for IBM System z9 and zSeries. * - * Copyright IBM Corp. 2008, 2008 + * Copyright IBM Corp. 2008, 2009 * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -22,7 +22,9 @@ #ifndef ZFCP_DBF_H #define ZFCP_DBF_H +#include "zfcp_ext.h" #include "zfcp_fsf.h" +#include "zfcp_def.h" #define ZFCP_DBF_TAG_SIZE 4 #define ZFCP_DBF_ID_SIZE 7 @@ -35,13 +37,13 @@ struct zfcp_dbf_dump { u8 data[]; /* dump data */ } __attribute__ ((packed)); -struct zfcp_rec_dbf_record_thread { +struct zfcp_dbf_rec_record_thread { u32 total; u32 ready; u32 running; }; -struct zfcp_rec_dbf_record_target { +struct zfcp_dbf_rec_record_target { u64 ref; u32 status; u32 d_id; @@ -50,7 +52,7 @@ struct zfcp_rec_dbf_record_target { u32 erp_count; }; -struct zfcp_rec_dbf_record_trigger { +struct zfcp_dbf_rec_record_trigger { u8 want; u8 need; u32 as; @@ -62,21 +64,21 @@ struct zfcp_rec_dbf_record_trigger { u64 fcp_lun; }; -struct zfcp_rec_dbf_record_action { +struct zfcp_dbf_rec_record_action { u32 status; u32 step; u64 action; u64 fsf_req; }; -struct zfcp_rec_dbf_record { +struct zfcp_dbf_rec_record { u8 id; char id2[7]; union { - struct zfcp_rec_dbf_record_action action; - struct zfcp_rec_dbf_record_thread thread; - struct zfcp_rec_dbf_record_target target; - struct zfcp_rec_dbf_record_trigger trigger; + struct zfcp_dbf_rec_record_action action; + struct zfcp_dbf_rec_record_thread thread; + struct zfcp_dbf_rec_record_target target; + struct zfcp_dbf_rec_record_trigger trigger; } u; }; @@ -87,7 +89,7 @@ enum { ZFCP_REC_DBF_ID_TRIGGER, }; -struct zfcp_hba_dbf_record_response { +struct zfcp_dbf_hba_record_response { u32 fsf_command; u64 fsf_reqid; u32 fsf_seqno; @@ -125,7 +127,7 @@ struct zfcp_hba_dbf_record_response { } u; } __attribute__ ((packed)); -struct zfcp_hba_dbf_record_status { +struct zfcp_dbf_hba_record_status { u8 failed; u32 status_type; u32 status_subtype; @@ -139,24 +141,24 @@ struct zfcp_hba_dbf_record_status { u8 payload[ZFCP_DBF_UNSOL_PAYLOAD]; } __attribute__ ((packed)); -struct zfcp_hba_dbf_record_qdio { +struct zfcp_dbf_hba_record_qdio { u32 qdio_error; u8 sbal_index; u8 sbal_count; } __attribute__ ((packed)); -struct zfcp_hba_dbf_record { +struct zfcp_dbf_hba_record { u8 tag[ZFCP_DBF_TAG_SIZE]; u8 tag2[ZFCP_DBF_TAG_SIZE]; union { - struct zfcp_hba_dbf_record_response response; - struct zfcp_hba_dbf_record_status status; - struct zfcp_hba_dbf_record_qdio qdio; + struct zfcp_dbf_hba_record_response response; + struct zfcp_dbf_hba_record_status status; + struct zfcp_dbf_hba_record_qdio qdio; struct fsf_bit_error_payload berr; } u; } __attribute__ ((packed)); -struct zfcp_san_dbf_record_ct_request { +struct zfcp_dbf_san_record_ct_request { u16 cmd_req_code; u8 revision; u8 gs_type; @@ -166,7 +168,7 @@ struct zfcp_san_dbf_record_ct_request { u32 len; } __attribute__ ((packed)); -struct zfcp_san_dbf_record_ct_response { +struct zfcp_dbf_san_record_ct_response { u16 cmd_rsp_code; u8 revision; u8 reason_code; @@ -176,27 +178,27 @@ struct zfcp_san_dbf_record_ct_response { u32 len; } __attribute__ ((packed)); -struct zfcp_san_dbf_record_els { +struct zfcp_dbf_san_record_els { u8 ls_code; u32 len; } __attribute__ ((packed)); -struct zfcp_san_dbf_record { +struct zfcp_dbf_san_record { u8 tag[ZFCP_DBF_TAG_SIZE]; u64 fsf_reqid; u32 fsf_seqno; u32 s_id; u32 d_id; union { - struct zfcp_san_dbf_record_ct_request ct_req; - struct zfcp_san_dbf_record_ct_response ct_resp; - struct zfcp_san_dbf_record_els els; + struct zfcp_dbf_san_record_ct_request ct_req; + struct zfcp_dbf_san_record_ct_response ct_resp; + struct zfcp_dbf_san_record_els els; } u; #define ZFCP_DBF_SAN_MAX_PAYLOAD 1024 u8 payload[32]; } __attribute__ ((packed)); -struct zfcp_scsi_dbf_record { +struct zfcp_dbf_scsi_record { u8 tag[ZFCP_DBF_TAG_SIZE]; u8 tag2[ZFCP_DBF_TAG_SIZE]; u32 scsi_id; @@ -222,4 +224,127 @@ struct zfcp_scsi_dbf_record { u8 sns_info[ZFCP_DBF_SCSI_FCP_SNS_INFO]; } __attribute__ ((packed)); +struct zfcp_dbf { + debug_info_t *rec; + debug_info_t *hba; + debug_info_t *san; + debug_info_t *scsi; + spinlock_t rec_lock; + spinlock_t hba_lock; + spinlock_t san_lock; + spinlock_t scsi_lock; + struct zfcp_dbf_rec_record rec_buf; + struct zfcp_dbf_hba_record hba_buf; + struct zfcp_dbf_san_record san_buf; + struct zfcp_dbf_scsi_record scsi_buf; + struct zfcp_adapter *adapter; +}; + +static inline +void zfcp_dbf_hba_fsf_resp(const char *tag2, int level, + struct zfcp_fsf_req *req, struct zfcp_dbf *dbf) +{ + if (level <= dbf->hba->level) + _zfcp_dbf_hba_fsf_response(tag2, level, req, dbf); +} + +/** + * zfcp_dbf_hba_fsf_response - trace event for request completion + * @fsf_req: request that has been completed + */ +static inline void zfcp_dbf_hba_fsf_response(struct zfcp_fsf_req *req) +{ + struct zfcp_dbf *dbf = req->adapter->dbf; + struct fsf_qtcb *qtcb = req->qtcb; + + if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) && + (qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) { + zfcp_dbf_hba_fsf_resp("perr", 1, req, dbf); + + } else if (qtcb->header.fsf_status != FSF_GOOD) { + zfcp_dbf_hba_fsf_resp("ferr", 1, req, dbf); + + } else if ((req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) || + (req->fsf_command == FSF_QTCB_OPEN_LUN)) { + zfcp_dbf_hba_fsf_resp("open", 4, req, dbf); + + } else if (qtcb->header.log_length) { + zfcp_dbf_hba_fsf_resp("qtcb", 5, req, dbf); + + } else { + zfcp_dbf_hba_fsf_resp("norm", 6, req, dbf); + } + } + +/** + * zfcp_dbf_hba_fsf_unsol - trace event for an unsolicited status buffer + * @tag: tag indicating which kind of unsolicited status has been received + * @dbf: reference to dbf structure + * @status_buffer: buffer containing payload of unsolicited status + */ +static inline +void zfcp_dbf_hba_fsf_unsol(const char *tag, struct zfcp_dbf *dbf, + struct fsf_status_read_buffer *buf) +{ + int level = 2; + + if (level <= dbf->hba->level) + _zfcp_dbf_hba_fsf_unsol(tag, level, dbf, buf); +} + +static inline +void zfcp_dbf_scsi(const char *tag, const char *tag2, int level, + struct zfcp_dbf *dbf, struct scsi_cmnd *scmd, + struct zfcp_fsf_req *req, unsigned long old_id) +{ + if (level <= dbf->scsi->level) + _zfcp_dbf_scsi(tag, tag2, level, dbf, scmd, req, old_id); +} + +/** + * zfcp_dbf_scsi_result - trace event for SCSI command completion + * @tag: tag indicating success or failure of SCSI command + * @level: trace level applicable for this event + * @adapter: adapter that has been used to issue the SCSI command + * @scmd: SCSI command pointer + * @fsf_req: request used to issue SCSI command (might be NULL) + */ +static inline +void zfcp_dbf_scsi_result(const char *tag, int level, struct zfcp_dbf *dbf, + struct scsi_cmnd *scmd, struct zfcp_fsf_req *fsf_req) +{ + zfcp_dbf_scsi("rslt", tag, level, dbf, scmd, fsf_req, 0); +} + +/** + * zfcp_dbf_scsi_abort - trace event for SCSI command abort + * @tag: tag indicating success or failure of abort operation + * @adapter: adapter thas has been used to issue SCSI command to be aborted + * @scmd: SCSI command to be aborted + * @new_req: request containing abort (might be NULL) + * @old_id: identifier of request containg SCSI command to be aborted + */ +static inline +void zfcp_dbf_scsi_abort(const char *tag, struct zfcp_dbf *dbf, + struct scsi_cmnd *scmd, struct zfcp_fsf_req *new_req, + unsigned long old_id) +{ + zfcp_dbf_scsi("abrt", tag, 1, dbf, scmd, new_req, old_id); +} + +/** + * zfcp_dbf_scsi_devreset - trace event for Logical Unit or Target Reset + * @tag: tag indicating success or failure of reset operation + * @flag: indicates type of reset (Target Reset, Logical Unit Reset) + * @unit: unit that needs reset + * @scsi_cmnd: SCSI command which caused this error recovery + */ +static inline +void zfcp_dbf_scsi_devreset(const char *tag, u8 flag, struct zfcp_unit *unit, + struct scsi_cmnd *scsi_cmnd) +{ + zfcp_dbf_scsi(flag == FCP_TARGET_RESET ? "trst" : "lrst", tag, 1, + unit->port->adapter->dbf, scsi_cmnd, NULL, 0); +} + #endif /* ZFCP_DBF_H */ diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index 49d0532..7da2fad 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -37,10 +37,8 @@ #include <asm/debug.h> #include <asm/ebcdic.h> #include <asm/sysinfo.h> -#include "zfcp_dbf.h" #include "zfcp_fsf.h" - /********************* GENERAL DEFINES *********************************/ #define REQUEST_LIST_SIZE 128 @@ -75,9 +73,6 @@ /*************** FIBRE CHANNEL PROTOCOL SPECIFIC DEFINES ********************/ -/* timeout for name-server lookup (in seconds) */ -#define ZFCP_NS_GID_PN_TIMEOUT 10 - /* task attribute values in FCP-2 FCP_CMND IU */ #define SIMPLE_Q 0 #define HEAD_OF_Q 1 @@ -224,8 +219,6 @@ struct zfcp_ls_adisc { #define ZFCP_STATUS_ADAPTER_QDIOUP 0x00000002 #define ZFCP_STATUS_ADAPTER_XCONFIG_OK 0x00000008 #define ZFCP_STATUS_ADAPTER_HOST_CON_INIT 0x00000010 -#define ZFCP_STATUS_ADAPTER_ERP_THREAD_UP 0x00000020 -#define ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL 0x00000080 #define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100 #define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200 @@ -234,6 +227,7 @@ struct zfcp_ls_adisc { /* remote port status */ #define ZFCP_STATUS_PORT_PHYS_OPEN 0x00000001 +#define ZFCP_STATUS_PORT_LINK_TEST 0x00000002 /* well known address (WKA) port status*/ enum zfcp_wka_status { @@ -249,7 +243,6 @@ enum zfcp_wka_status { /* FSF request status (this does not have a common part) */ #define ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT 0x00000002 -#define ZFCP_STATUS_FSFREQ_COMPLETED 0x00000004 #define ZFCP_STATUS_FSFREQ_ERROR 0x00000008 #define ZFCP_STATUS_FSFREQ_CLEANUP 0x00000010 #define ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED 0x00000040 @@ -266,12 +259,14 @@ struct zfcp_fsf_req; /* holds various memory pools of an adapter */ struct zfcp_adapter_mempool { - mempool_t *fsf_req_erp; - mempool_t *fsf_req_scsi; - mempool_t *fsf_req_abort; - mempool_t *fsf_req_status_read; - mempool_t *data_status_read; - mempool_t *data_gid_pn; + mempool_t *erp_req; + mempool_t *gid_pn_req; + mempool_t *scsi_req; + mempool_t *scsi_abort; + mempool_t *status_read_req; + mempool_t *status_read_data; + mempool_t *gid_pn_data; + mempool_t *qtcb_pool; }; /* @@ -305,6 +300,15 @@ struct ct_iu_gid_pn_resp { u32 d_id; } __attribute__ ((packed)); +struct ct_iu_gpn_ft_req { + struct ct_hdr header; + u8 flags; + u8 domain_id_scope; + u8 area_id_scope; + u8 fc4_type; +} __attribute__ ((packed)); + + /** * struct zfcp_send_ct - used to pass parameters to function zfcp_fsf_send_ct * @wka_port: port where the request is sent to @@ -312,7 +316,6 @@ struct ct_iu_gid_pn_resp { * @resp: scatter-gather list for response * @handler: handler function (called for response to the request) * @handler_data: data passed to handler function - * @timeout: FSF timeout for this request * @completion: completion for synchronization purposes * @status: used to pass error status to calling function */ @@ -322,7 +325,6 @@ struct zfcp_send_ct { struct scatterlist *resp; void (*handler)(unsigned long); unsigned long handler_data; - int timeout; struct completion *completion; int status; }; @@ -420,6 +422,29 @@ struct zfcp_latencies { spinlock_t lock; }; +/** struct zfcp_qdio - basic QDIO data structure + * @resp_q: response queue + * @req_q: request queue + * @stat_lock: lock to protect req_q_util and req_q_time + * @req_q_lock; lock to serialize access to request queue + * @req_q_time: time of last fill level change + * @req_q_util: used for accounting + * @req_q_full: queue full incidents + * @req_q_wq: used to wait for SBAL availability + * @adapter: adapter used in conjunction with this QDIO structure + */ +struct zfcp_qdio { + struct zfcp_qdio_queue resp_q; + struct zfcp_qdio_queue req_q; + spinlock_t stat_lock; + spinlock_t req_q_lock; + unsigned long long req_q_time; + u64 req_q_util; + atomic_t req_q_full; + wait_queue_head_t req_q_wq; + struct zfcp_adapter *adapter; +}; + struct zfcp_adapter { atomic_t refcount; /* reference count */ wait_queue_head_t remove_wq; /* can be used to wait for @@ -428,6 +453,7 @@ struct zfcp_adapter { u64 peer_wwpn; /* P2P peer WWPN */ u32 peer_d_id; /* P2P peer D_ID */ struct ccw_device *ccw_device; /* S/390 ccw device */ + struct zfcp_qdio *qdio; u32 hydra_version; /* Hydra version */ u32 fsf_lic_version; u32 adapter_features; /* FCP channel features */ @@ -439,15 +465,7 @@ struct zfcp_adapter { unsigned long req_no; /* unique FSF req number */ struct list_head *req_list; /* list of pending reqs */ spinlock_t req_list_lock; /* request list lock */ - struct zfcp_qdio_queue req_q; /* request queue */ - spinlock_t req_q_lock; /* for operations on queue */ - ktime_t req_q_time; /* time of last fill level change */ - u64 req_q_util; /* for accounting */ - spinlock_t qdio_stat_lock; u32 fsf_req_seq_no; /* FSF cmnd seq number */ - wait_queue_head_t request_wq; /* can be used to wait for - more avaliable SBALs */ - struct zfcp_qdio_queue resp_q; /* response queue */ rwlock_t abort_lock; /* Protects against SCSI stack abort/command completion races */ @@ -456,10 +474,9 @@ struct zfcp_adapter { atomic_t status; /* status of this adapter */ struct list_head erp_ready_head; /* error recovery for this adapter/devices */ + wait_queue_head_t erp_ready_wq; struct list_head erp_running_head; rwlock_t erp_lock; - struct semaphore erp_ready_sem; - wait_queue_head_t erp_thread_wqh; wait_queue_head_t erp_done_wqh; struct zfcp_erp_action erp_action; /* pending error recovery */ atomic_t erp_counter; @@ -467,27 +484,16 @@ struct zfcp_adapter { actions */ u32 erp_low_mem_count; /* nr of erp actions waiting for memory */ + struct task_struct *erp_thread; struct zfcp_wka_ports *gs; /* generic services */ - debug_info_t *rec_dbf; - debug_info_t *hba_dbf; - debug_info_t *san_dbf; /* debug feature areas */ - debug_info_t *scsi_dbf; - spinlock_t rec_dbf_lock; - spinlock_t hba_dbf_lock; - spinlock_t san_dbf_lock; - spinlock_t scsi_dbf_lock; - struct zfcp_rec_dbf_record rec_dbf_buf; - struct zfcp_hba_dbf_record hba_dbf_buf; - struct zfcp_san_dbf_record san_dbf_buf; - struct zfcp_scsi_dbf_record scsi_dbf_buf; + struct zfcp_dbf *dbf; /* debug traces */ struct zfcp_adapter_mempool pool; /* Adapter memory pools */ - struct qdio_initialize qdio_init_data; /* for qdio_establish */ struct fc_host_statistics *fc_stats; struct fsf_qtcb_bottom_port *stats_reset_data; unsigned long stats_reset; struct work_struct scan_work; struct service_level service_level; - atomic_t qdio_outb_full; /* queue full incidents */ + struct workqueue_struct *work_queue; }; struct zfcp_port { @@ -531,36 +537,64 @@ struct zfcp_unit { struct work_struct scsi_work; }; -/* FSF request */ +/** + * struct zfcp_queue_req - queue related values for a request + * @sbal_number: number of free SBALs + * @sbal_first: first SBAL for this request + * @sbal_last: last SBAL for this request + * @sbal_limit: last possible SBAL for this request + * @sbale_curr: current SBALE at creation of this request + * @sbal_response: SBAL used in interrupt + * @qdio_outb_usage: usage of outbound queue + * @qdio_inb_usage: usage of inbound queue + */ +struct zfcp_queue_req { + u8 sbal_number; + u8 sbal_first; + u8 sbal_last; + u8 sbal_limit; + u8 sbale_curr; + u8 sbal_response; + u16 qdio_outb_usage; + u16 qdio_inb_usage; +}; + +/** + * struct zfcp_fsf_req - basic FSF request structure + * @list: list of FSF requests + * @req_id: unique request ID + * @adapter: adapter this request belongs to + * @queue_req: queue related values + * @completion: used to signal the completion of the request + * @status: status of the request + * @fsf_command: FSF command issued + * @qtcb: associated QTCB + * @seq_no: sequence number of this request + * @data: private data + * @timer: timer data of this request + * @erp_action: reference to erp action if request issued on behalf of ERP + * @pool: reference to memory pool if used for this request + * @issued: time when request was send (STCK) + * @unit: reference to unit if this request is a SCSI request + * @handler: handler which should be called to process response + */ struct zfcp_fsf_req { - struct list_head list; /* list of FSF requests */ - unsigned long req_id; /* unique request ID */ - struct zfcp_adapter *adapter; /* adapter request belongs to */ - u8 sbal_number; /* nr of SBALs free for use */ - u8 sbal_first; /* first SBAL for this request */ - u8 sbal_last; /* last SBAL for this request */ - u8 sbal_limit; /* last possible SBAL for - this reuest */ - u8 sbale_curr; /* current SBALE during creation - of request */ - u8 sbal_response; /* SBAL used in interrupt */ - wait_queue_head_t completion_wq; /* can be used by a routine - to wait for completion */ - u32 status; /* status of this request */ - u32 fsf_command; /* FSF Command copy */ - struct fsf_qtcb *qtcb; /* address of associated QTCB */ - u32 seq_no; /* Sequence number of request */ - void *data; /* private data of request */ - struct timer_list timer; /* used for erp or scsi er */ - struct zfcp_erp_action *erp_action; /* used if this request is - issued on behalf of erp */ - mempool_t *pool; /* used if request was alloacted - from emergency pool */ - unsigned long long issued; /* request sent time (STCK) */ - struct zfcp_unit *unit; + struct list_head list; + unsigned long req_id; + struct zfcp_adapter *adapter; + struct zfcp_queue_req queue_req; + struct completion completion; + u32 status; + u32 fsf_command; + struct fsf_qtcb *qtcb; + u32 seq_no; + void *data; + struct timer_list timer; + struct zfcp_erp_action *erp_action; + mempool_t *pool; + unsigned long long issued; + struct zfcp_unit *unit; void (*handler)(struct zfcp_fsf_req *); - u16 qdio_outb_usage;/* usage of outbound queue */ - u16 qdio_inb_usage; /* usage of inbound queue */ }; /* driver data */ @@ -570,18 +604,11 @@ struct zfcp_data { rwlock_t config_lock; /* serialises changes to adapter/port/unit lists */ - struct semaphore config_sema; /* serialises configuration - changes */ - struct kmem_cache *fsf_req_qtcb_cache; + struct mutex config_mutex; + struct kmem_cache *gpn_ft_cache; + struct kmem_cache *qtcb_cache; struct kmem_cache *sr_buffer_cache; struct kmem_cache *gid_pn_cache; - struct workqueue_struct *work_queue; -}; - -/* struct used by memory pools for fsf_requests */ -struct zfcp_fsf_req_qtcb { - struct zfcp_fsf_req fsf_req; - struct fsf_qtcb qtcb; }; /********************** ZFCP SPECIFIC DEFINES ********************************/ diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index c75d6f3..73d366b 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -9,6 +9,7 @@ #define KMSG_COMPONENT "zfcp" #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt +#include <linux/kthread.h> #include "zfcp_ext.h" #define ZFCP_MAX_ERPS 3 @@ -26,7 +27,6 @@ enum zfcp_erp_steps { ZFCP_ERP_STEP_FSF_XCONFIG = 0x0001, ZFCP_ERP_STEP_PHYS_PORT_CLOSING = 0x0010, ZFCP_ERP_STEP_PORT_CLOSING = 0x0100, - ZFCP_ERP_STEP_NAMESERVER_LOOKUP = 0x0400, ZFCP_ERP_STEP_PORT_OPENING = 0x0800, ZFCP_ERP_STEP_UNIT_CLOSING = 0x1000, ZFCP_ERP_STEP_UNIT_OPENING = 0x2000, @@ -75,9 +75,9 @@ static void zfcp_erp_action_ready(struct zfcp_erp_action *act) struct zfcp_adapter *adapter = act->adapter; list_move(&act->list, &act->adapter->erp_ready_head); - zfcp_rec_dbf_event_action("erardy1", act); - up(&adapter->erp_ready_sem); - zfcp_rec_dbf_event_thread("erardy2", adapter); + zfcp_dbf_rec_action("erardy1", act); + wake_up(&adapter->erp_ready_wq); + zfcp_dbf_rec_thread("erardy2", adapter->dbf); } static void zfcp_erp_action_dismiss(struct zfcp_erp_action *act) @@ -150,6 +150,9 @@ static int zfcp_erp_required_act(int want, struct zfcp_adapter *adapter, a_status = atomic_read(&adapter->status); if (a_status & ZFCP_STATUS_COMMON_ERP_INUSE) return 0; + if (!(a_status & ZFCP_STATUS_COMMON_RUNNING) && + !(a_status & ZFCP_STATUS_COMMON_OPEN)) + return 0; /* shutdown requested for closed adapter */ } return need; @@ -213,8 +216,7 @@ static int zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter, int retval = 1, need; struct zfcp_erp_action *act = NULL; - if (!(atomic_read(&adapter->status) & - ZFCP_STATUS_ADAPTER_ERP_THREAD_UP)) + if (!adapter->erp_thread) return -EIO; need = zfcp_erp_required_act(want, adapter, port, unit); @@ -227,12 +229,11 @@ static int zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter, goto out; ++adapter->erp_total_count; list_add_tail(&act->list, &adapter->erp_ready_head); - up(&adapter->erp_ready_sem); - zfcp_rec_dbf_event_thread("eracte1", adapter); + wake_up(&adapter->erp_ready_wq); + zfcp_dbf_rec_thread("eracte1", adapter->dbf); retval = 0; out: - zfcp_rec_dbf_event_trigger(id, ref, want, need, act, - adapter, port, unit); + zfcp_dbf_rec_trigger(id, ref, want, need, act, adapter, port, unit); return retval; } @@ -443,28 +444,28 @@ static int status_change_clear(unsigned long mask, atomic_t *status) static void zfcp_erp_adapter_unblock(struct zfcp_adapter *adapter) { if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status)) - zfcp_rec_dbf_event_adapter("eraubl1", NULL, adapter); + zfcp_dbf_rec_adapter("eraubl1", NULL, adapter->dbf); atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status); } static void zfcp_erp_port_unblock(struct zfcp_port *port) { if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &port->status)) - zfcp_rec_dbf_event_port("erpubl1", NULL, port); + zfcp_dbf_rec_port("erpubl1", NULL, port); atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &port->status); } static void zfcp_erp_unit_unblock(struct zfcp_unit *unit) { if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &unit->status)) - zfcp_rec_dbf_event_unit("eruubl1", NULL, unit); + zfcp_dbf_rec_unit("eruubl1", NULL, unit); atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &unit->status); } static void zfcp_erp_action_to_running(struct zfcp_erp_action *erp_action) { list_move(&erp_action->list, &erp_action->adapter->erp_running_head); - zfcp_rec_dbf_event_action("erator1", erp_action); + zfcp_dbf_rec_action("erator1", erp_action); } static void zfcp_erp_strategy_check_fsfreq(struct zfcp_erp_action *act) @@ -480,13 +481,12 @@ static void zfcp_erp_strategy_check_fsfreq(struct zfcp_erp_action *act) if (act->status & (ZFCP_STATUS_ERP_DISMISSED | ZFCP_STATUS_ERP_TIMEDOUT)) { act->fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; - zfcp_rec_dbf_event_action("erscf_1", act); + zfcp_dbf_rec_action("erscf_1", act); act->fsf_req->erp_action = NULL; } if (act->status & ZFCP_STATUS_ERP_TIMEDOUT) - zfcp_rec_dbf_event_action("erscf_2", act); - if (act->fsf_req->status & (ZFCP_STATUS_FSFREQ_COMPLETED | - ZFCP_STATUS_FSFREQ_DISMISSED)) + zfcp_dbf_rec_action("erscf_2", act); + if (act->fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) act->fsf_req = NULL; } else act->fsf_req = NULL; @@ -604,9 +604,11 @@ static void zfcp_erp_wakeup(struct zfcp_adapter *adapter) static int zfcp_erp_adapter_strategy_open_qdio(struct zfcp_erp_action *act) { - if (zfcp_qdio_open(act->adapter)) + struct zfcp_qdio *qdio = act->adapter->qdio; + + if (zfcp_qdio_open(qdio)) return ZFCP_ERP_FAILED; - init_waitqueue_head(&act->adapter->request_wq); + init_waitqueue_head(&qdio->req_q_wq); atomic_set_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &act->adapter->status); return ZFCP_ERP_SUCCEEDED; } @@ -641,9 +643,10 @@ static int zfcp_erp_adapter_strat_fsf_xconf(struct zfcp_erp_action *erp_action) return ZFCP_ERP_FAILED; } - zfcp_rec_dbf_event_thread_lock("erasfx1", adapter); - down(&adapter->erp_ready_sem); - zfcp_rec_dbf_event_thread_lock("erasfx2", adapter); + zfcp_dbf_rec_thread_lock("erasfx1", adapter->dbf); + wait_event(adapter->erp_ready_wq, + !list_empty(&adapter->erp_ready_head)); + zfcp_dbf_rec_thread_lock("erasfx2", adapter->dbf); if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT) break; @@ -682,9 +685,10 @@ static int zfcp_erp_adapter_strategy_open_fsf_xport(struct zfcp_erp_action *act) if (ret) return ZFCP_ERP_FAILED; - zfcp_rec_dbf_event_thread_lock("erasox1", adapter); - down(&adapter->erp_ready_sem); - zfcp_rec_dbf_event_thread_lock("erasox2", adapter); + zfcp_dbf_rec_thread_lock("erasox1", adapter->dbf); + wait_event(adapter->erp_ready_wq, + !list_empty(&adapter->erp_ready_head)); + zfcp_dbf_rec_thread_lock("erasox2", adapter->dbf); if (act->status & ZFCP_STATUS_ERP_TIMEDOUT) return ZFCP_ERP_FAILED; @@ -711,10 +715,10 @@ static void zfcp_erp_adapter_strategy_close(struct zfcp_erp_action *act) struct zfcp_adapter *adapter = act->adapter; /* close queues to ensure that buffers are not accessed by adapter */ - zfcp_qdio_close(adapter); + zfcp_qdio_close(adapter->qdio); zfcp_fsf_req_dismiss_all(adapter); adapter->fsf_req_seq_no = 0; - zfcp_fc_wka_port_force_offline(&adapter->gs->ds); + zfcp_fc_wka_ports_force_offline(adapter->gs); /* all ports and units are closed */ zfcp_erp_modify_adapter_status(adapter, "erascl1", NULL, ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR); @@ -841,27 +845,6 @@ static int zfcp_erp_open_ptp_port(struct zfcp_erp_action *act) return zfcp_erp_port_strategy_open_port(act); } -void zfcp_erp_port_strategy_open_lookup(struct work_struct *work) -{ - int retval; - struct zfcp_port *port = container_of(work, struct zfcp_port, - gid_pn_work); - - retval = zfcp_fc_ns_gid_pn(&port->erp_action); - if (!retval) { - port->erp_action.step = ZFCP_ERP_STEP_NAMESERVER_LOOKUP; - goto out; - } - if (retval == -ENOMEM) { - zfcp_erp_notify(&port->erp_action, ZFCP_STATUS_ERP_LOWMEM); - goto out; - } - /* all other error condtions */ - zfcp_erp_notify(&port->erp_action, 0); -out: - zfcp_port_put(port); -} - static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *act) { struct zfcp_adapter *adapter = act->adapter; @@ -876,15 +859,11 @@ static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *act) return zfcp_erp_open_ptp_port(act); if (!port->d_id) { zfcp_port_get(port); - if (!queue_work(zfcp_data.work_queue, + if (!queue_work(adapter->work_queue, &port->gid_pn_work)) zfcp_port_put(port); - return ZFCP_ERP_CONTINUES; + return ZFCP_ERP_EXIT; } - /* fall through */ - case ZFCP_ERP_STEP_NAMESERVER_LOOKUP: - if (!port->d_id) - return ZFCP_ERP_FAILED; return zfcp_erp_port_strategy_open_port(act); case ZFCP_ERP_STEP_PORT_OPENING: @@ -1163,7 +1142,7 @@ static void zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action) } list_del(&erp_action->list); - zfcp_rec_dbf_event_action("eractd1", erp_action); + zfcp_dbf_rec_action("eractd1", erp_action); switch (erp_action->action) { case ZFCP_ERP_ACTION_REOPEN_UNIT: @@ -1311,20 +1290,16 @@ static int zfcp_erp_thread(void *data) struct list_head *next; struct zfcp_erp_action *act; unsigned long flags; - int ignore; - - daemonize("zfcperp%s", dev_name(&adapter->ccw_device->dev)); - /* Block all signals */ - siginitsetinv(¤t->blocked, 0); - atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status); - wake_up(&adapter->erp_thread_wqh); - while (!(atomic_read(&adapter->status) & - ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL)) { + for (;;) { + zfcp_dbf_rec_thread_lock("erthrd1", adapter->dbf); + wait_event_interruptible(adapter->erp_ready_wq, + !list_empty(&adapter->erp_ready_head) || + kthread_should_stop()); + zfcp_dbf_rec_thread_lock("erthrd2", adapter->dbf); - zfcp_rec_dbf_event_thread_lock("erthrd1", adapter); - ignore = down_interruptible(&adapter->erp_ready_sem); - zfcp_rec_dbf_event_thread_lock("erthrd2", adapter); + if (kthread_should_stop()) + break; write_lock_irqsave(&adapter->erp_lock, flags); next = adapter->erp_ready_head.next; @@ -1339,9 +1314,6 @@ static int zfcp_erp_thread(void *data) } } - atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status); - wake_up(&adapter->erp_thread_wqh); - return 0; } @@ -1353,18 +1325,17 @@ static int zfcp_erp_thread(void *data) */ int zfcp_erp_thread_setup(struct zfcp_adapter *adapter) { - int retval; + struct task_struct *thread; - atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status); - retval = kernel_thread(zfcp_erp_thread, adapter, SIGCHLD); - if (retval < 0) { + thread = kthread_run(zfcp_erp_thread, adapter, "zfcperp%s", + dev_name(&adapter->ccw_device->dev)); + if (IS_ERR(thread)) { dev_err(&adapter->ccw_device->dev, "Creating an ERP thread for the FCP device failed.\n"); - return retval; + return PTR_ERR(thread); } - wait_event(adapter->erp_thread_wqh, - atomic_read(&adapter->status) & - ZFCP_STATUS_ADAPTER_ERP_THREAD_UP); + + adapter->erp_thread = thread; return 0; } @@ -1379,16 +1350,10 @@ int zfcp_erp_thread_setup(struct zfcp_adapter *adapter) */ void zfcp_erp_thread_kill(struct zfcp_adapter *adapter) { - atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL, &adapter->status); - up(&adapter->erp_ready_sem); - zfcp_rec_dbf_event_thread_lock("erthrk1", adapter); - - wait_event(adapter->erp_thread_wqh, - !(atomic_read(&adapter->status) & - ZFCP_STATUS_ADAPTER_ERP_THREAD_UP)); - - atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL, - &adapter->status); + kthread_stop(adapter->erp_thread); + adapter->erp_thread = NULL; + WARN_ON(!list_empty(&adapter->erp_ready_head)); + WARN_ON(!list_empty(&adapter->erp_running_head)); } /** @@ -1456,11 +1421,11 @@ void zfcp_erp_modify_adapter_status(struct zfcp_adapter *adapter, char *id, if (set_or_clear == ZFCP_SET) { if (status_change_set(mask, &adapter->status)) - zfcp_rec_dbf_event_adapter(id, ref, adapter); + zfcp_dbf_rec_adapter(id, ref, adapter->dbf); atomic_set_mask(mask, &adapter->status); } else { if (status_change_clear(mask, &adapter->status)) - zfcp_rec_dbf_event_adapter(id, ref, adapter); + zfcp_dbf_rec_adapter(id, ref, adapter->dbf); atomic_clear_mask(mask, &adapter->status); if (mask & ZFCP_STATUS_COMMON_ERP_FAILED) atomic_set(&adapter->erp_counter, 0); @@ -1490,11 +1455,11 @@ void zfcp_erp_modify_port_status(struct zfcp_port *port, char *id, void *ref, if (set_or_clear == ZFCP_SET) { if (status_change_set(mask, &port->status)) - zfcp_rec_dbf_event_port(id, ref, port); + zfcp_dbf_rec_port(id, ref, port); atomic_set_mask(mask, &port->status); } else { if (status_change_clear(mask, &port->status)) - zfcp_rec_dbf_event_port(id, ref, port); + zfcp_dbf_rec_port(id, ref, port); atomic_clear_mask(mask, &port->status); if (mask & ZFCP_STATUS_COMMON_ERP_FAILED) atomic_set(&port->erp_counter, 0); @@ -1519,11 +1484,11 @@ void zfcp_erp_modify_unit_status(struct zfcp_unit *unit, char *id, void *ref, { if (set_or_clear == ZFCP_SET) { if (status_change_set(mask, &unit->status)) - zfcp_rec_dbf_event_unit(id, ref, unit); + zfcp_dbf_rec_unit(id, ref, unit); atomic_set_mask(mask, &unit->status); } else { if (status_change_clear(mask, &unit->status)) - zfcp_rec_dbf_event_unit(id, ref, unit); + zfcp_dbf_rec_unit(id, ref, unit); atomic_clear_mask(mask, &unit->status); if (mask & ZFCP_STATUS_COMMON_ERP_FAILED) { atomic_set(&unit->erp_counter, 0); diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h index 3044c60..36935bc 100644 --- a/drivers/s390/scsi/zfcp_ext.h +++ b/drivers/s390/scsi/zfcp_ext.h @@ -34,37 +34,31 @@ extern struct zfcp_adapter *zfcp_get_adapter_by_busid(char *); extern struct miscdevice zfcp_cfdc_misc; /* zfcp_dbf.c */ -extern int zfcp_adapter_debug_register(struct zfcp_adapter *); -extern void zfcp_adapter_debug_unregister(struct zfcp_adapter *); -extern void zfcp_rec_dbf_event_thread(char *, struct zfcp_adapter *); -extern void zfcp_rec_dbf_event_thread_lock(char *, struct zfcp_adapter *); -extern void zfcp_rec_dbf_event_adapter(char *, void *, struct zfcp_adapter *); -extern void zfcp_rec_dbf_event_port(char *, void *, struct zfcp_port *); -extern void zfcp_rec_dbf_event_unit(char *, void *, struct zfcp_unit *); -extern void zfcp_rec_dbf_event_trigger(char *, void *, u8, u8, void *, - struct zfcp_adapter *, - struct zfcp_port *, struct zfcp_unit *); -extern void zfcp_rec_dbf_event_action(char *, struct zfcp_erp_action *); -extern void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *); -extern void zfcp_hba_dbf_event_fsf_unsol(const char *, struct zfcp_adapter *, - struct fsf_status_read_buffer *); -extern void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *, unsigned int, int, - int); -extern void zfcp_hba_dbf_event_berr(struct zfcp_adapter *, - struct zfcp_fsf_req *); -extern void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *); -extern void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *); -extern void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *); -extern void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *); -extern void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *); -extern void zfcp_scsi_dbf_event_result(const char *, int, struct zfcp_adapter *, - struct scsi_cmnd *, - struct zfcp_fsf_req *); -extern void zfcp_scsi_dbf_event_abort(const char *, struct zfcp_adapter *, - struct scsi_cmnd *, struct zfcp_fsf_req *, - unsigned long); -extern void zfcp_scsi_dbf_event_devreset(const char *, u8, struct zfcp_unit *, - struct scsi_cmnd *); +extern int zfcp_dbf_adapter_register(struct zfcp_adapter *); +extern void zfcp_dbf_adapter_unregister(struct zfcp_dbf *); +extern void zfcp_dbf_rec_thread(char *, struct zfcp_dbf *); +extern void zfcp_dbf_rec_thread_lock(char *, struct zfcp_dbf *); +extern void zfcp_dbf_rec_adapter(char *, void *, struct zfcp_dbf *); +extern void zfcp_dbf_rec_port(char *, void *, struct zfcp_port *); +extern void zfcp_dbf_rec_unit(char *, void *, struct zfcp_unit *); +extern void zfcp_dbf_rec_trigger(char *, void *, u8, u8, void *, + struct zfcp_adapter *, struct zfcp_port *, + struct zfcp_unit *); +extern void zfcp_dbf_rec_action(char *, struct zfcp_erp_action *); +extern void _zfcp_dbf_hba_fsf_response(const char *, int, struct zfcp_fsf_req *, + struct zfcp_dbf *); +extern void _zfcp_dbf_hba_fsf_unsol(const char *, int level, struct zfcp_dbf *, + struct fsf_status_read_buffer *); +extern void zfcp_dbf_hba_qdio(struct zfcp_dbf *, unsigned int, int, int); +extern void zfcp_dbf_hba_berr(struct zfcp_dbf *, struct zfcp_fsf_req *); +extern void zfcp_dbf_san_ct_request(struct zfcp_fsf_req *); +extern void zfcp_dbf_san_ct_response(struct zfcp_fsf_req *); +extern void zfcp_dbf_san_els_request(struct zfcp_fsf_req *); +extern void zfcp_dbf_san_els_response(struct zfcp_fsf_req *); +extern void zfcp_dbf_san_incoming_els(struct zfcp_fsf_req *); +extern void _zfcp_dbf_scsi(const char *, const char *, int, struct zfcp_dbf *, + struct scsi_cmnd *, struct zfcp_fsf_req *, + unsigned long); /* zfcp_erp.c */ extern void zfcp_erp_modify_adapter_status(struct zfcp_adapter *, char *, @@ -96,22 +90,20 @@ extern void zfcp_erp_unit_access_denied(struct zfcp_unit *, char *, void *); extern void zfcp_erp_adapter_access_changed(struct zfcp_adapter *, char *, void *); extern void zfcp_erp_timeout_handler(unsigned long); -extern void zfcp_erp_port_strategy_open_lookup(struct work_struct *); /* zfcp_fc.c */ -extern int zfcp_scan_ports(struct zfcp_adapter *); -extern void _zfcp_scan_ports_later(struct work_struct *); +extern int zfcp_fc_scan_ports(struct zfcp_adapter *); +extern void _zfcp_fc_scan_ports_later(struct work_struct *); extern void zfcp_fc_incoming_els(struct zfcp_fsf_req *); -extern int zfcp_fc_ns_gid_pn(struct zfcp_erp_action *); +extern void zfcp_fc_port_did_lookup(struct work_struct *); extern void zfcp_fc_plogi_evaluate(struct zfcp_port *, struct fsf_plogi *); -extern void zfcp_test_link(struct zfcp_port *); +extern void zfcp_fc_test_link(struct zfcp_port *); extern void zfcp_fc_link_test_work(struct work_struct *); -extern void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *); -extern void zfcp_fc_wka_ports_init(struct zfcp_adapter *); +extern void zfcp_fc_wka_ports_force_offline(struct zfcp_wka_ports *); +extern int zfcp_fc_gs_setup(struct zfcp_adapter *); +extern void zfcp_fc_gs_destroy(struct zfcp_adapter *); extern int zfcp_fc_execute_els_fc_job(struct fc_bsg_job *); extern int zfcp_fc_execute_ct_fc_job(struct fc_bsg_job *); -extern void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *); - /* zfcp_fsf.c */ extern int zfcp_fsf_open_port(struct zfcp_erp_action *); @@ -122,37 +114,39 @@ extern int zfcp_fsf_close_physical_port(struct zfcp_erp_action *); extern int zfcp_fsf_open_unit(struct zfcp_erp_action *); extern int zfcp_fsf_close_unit(struct zfcp_erp_action *); extern int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *); -extern int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *, +extern int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *, struct fsf_qtcb_bottom_config *); extern int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *); -extern int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *, +extern int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *, struct fsf_qtcb_bottom_port *); extern struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *, struct zfcp_fsf_cfdc *); extern void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *); -extern int zfcp_fsf_status_read(struct zfcp_adapter *); +extern int zfcp_fsf_status_read(struct zfcp_qdio *); extern int zfcp_status_read_refill(struct zfcp_adapter *adapter); -extern int zfcp_fsf_send_ct(struct zfcp_send_ct *, mempool_t *, - struct zfcp_erp_action *); +extern int zfcp_fsf_send_ct(struct zfcp_send_ct *, mempool_t *); extern int zfcp_fsf_send_els(struct zfcp_send_els *); extern int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *, struct scsi_cmnd *); -extern void zfcp_fsf_req_complete(struct zfcp_fsf_req *); extern void zfcp_fsf_req_free(struct zfcp_fsf_req *); extern struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *, u8); extern struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long, struct zfcp_unit *); +extern void zfcp_fsf_reqid_check(struct zfcp_qdio *, int); /* zfcp_qdio.c */ -extern int zfcp_qdio_allocate(struct zfcp_adapter *); -extern void zfcp_qdio_free(struct zfcp_adapter *); -extern int zfcp_qdio_send(struct zfcp_fsf_req *); -extern struct qdio_buffer_element *zfcp_qdio_sbale_req(struct zfcp_fsf_req *); -extern struct qdio_buffer_element *zfcp_qdio_sbale_curr(struct zfcp_fsf_req *); -extern int zfcp_qdio_sbals_from_sg(struct zfcp_fsf_req *, unsigned long, +extern int zfcp_qdio_setup(struct zfcp_adapter *); +extern void zfcp_qdio_destroy(struct zfcp_qdio *); +extern int zfcp_qdio_send(struct zfcp_qdio *, struct zfcp_queue_req *); +extern struct qdio_buffer_element + *zfcp_qdio_sbale_req(struct zfcp_qdio *, struct zfcp_queue_req *); +extern struct qdio_buffer_element + *zfcp_qdio_sbale_curr(struct zfcp_qdio *, struct zfcp_queue_req *); +extern int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *, + struct zfcp_queue_req *, unsigned long, struct scatterlist *, int); -extern int zfcp_qdio_open(struct zfcp_adapter *); -extern void zfcp_qdio_close(struct zfcp_adapter *); +extern int zfcp_qdio_open(struct zfcp_qdio *); +extern void zfcp_qdio_close(struct zfcp_qdio *); /* zfcp_scsi.c */ extern struct zfcp_data zfcp_data; diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index 47daebf..722f22d 100644 --- a/drivers/s390/scsi/zfcp_fc.c +++ b/drivers/s390/scsi/zfcp_fc.c @@ -25,14 +25,6 @@ static u32 rscn_range_mask[] = { [RSCN_FABRIC_ADDRESS] = 0x000000, }; -struct ct_iu_gpn_ft_req { - struct ct_hdr header; - u8 flags; - u8 domain_id_scope; - u8 area_id_scope; - u8 fc4_type; -} __attribute__ ((packed)); - struct gpn_ft_resp_acc { u8 control; u8 port_id[3]; @@ -65,7 +57,7 @@ struct zfcp_fc_ns_handler_data { unsigned long handler_data; }; -static int zfcp_wka_port_get(struct zfcp_wka_port *wka_port) +static int zfcp_fc_wka_port_get(struct zfcp_wka_port *wka_port) { if (mutex_lock_interruptible(&wka_port->mutex)) return -ERESTARTSYS; @@ -90,7 +82,7 @@ static int zfcp_wka_port_get(struct zfcp_wka_port *wka_port) return -EIO; } -static void zfcp_wka_port_offline(struct work_struct *work) +static void zfcp_fc_wka_port_offline(struct work_struct *work) { struct delayed_work *dw = to_delayed_work(work); struct zfcp_wka_port *wka_port = @@ -110,7 +102,7 @@ out: mutex_unlock(&wka_port->mutex); } -static void zfcp_wka_port_put(struct zfcp_wka_port *wka_port) +static void zfcp_fc_wka_port_put(struct zfcp_wka_port *wka_port) { if (atomic_dec_return(&wka_port->refcount) != 0) return; @@ -129,10 +121,10 @@ static void zfcp_fc_wka_port_init(struct zfcp_wka_port *wka_port, u32 d_id, wka_port->status = ZFCP_WKA_PORT_OFFLINE; atomic_set(&wka_port->refcount, 0); mutex_init(&wka_port->mutex); - INIT_DELAYED_WORK(&wka_port->work, zfcp_wka_port_offline); + INIT_DELAYED_WORK(&wka_port->work, zfcp_fc_wka_port_offline); } -void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *wka) +static void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *wka) { cancel_delayed_work_sync(&wka->work); mutex_lock(&wka->mutex); @@ -140,15 +132,13 @@ void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *wka) mutex_unlock(&wka->mutex); } -void zfcp_fc_wka_ports_init(struct zfcp_adapter *adapter) +void zfcp_fc_wka_ports_force_offline(struct zfcp_wka_ports *gs) { - struct zfcp_wka_ports *gs = adapter->gs; - - zfcp_fc_wka_port_init(&gs->ms, FC_FID_MGMT_SERV, adapter); - zfcp_fc_wka_port_init(&gs->ts, FC_FID_TIME_SERV, adapter); - zfcp_fc_wka_port_init(&gs->ds, FC_FID_DIR_SERV, adapter); - zfcp_fc_wka_port_init(&gs->as, FC_FID_ALIASES, adapter); - zfcp_fc_wka_port_init(&gs->ks, FC_FID_SEC_KEY, adapter); + zfcp_fc_wka_port_force_offline(&gs->ms); + zfcp_fc_wka_port_force_offline(&gs->ts); + zfcp_fc_wka_port_force_offline(&gs->ds); + zfcp_fc_wka_port_force_offline(&gs->as); + zfcp_fc_wka_port_force_offline(&gs->ks); } static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range, @@ -160,7 +150,7 @@ static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range, read_lock_irqsave(&zfcp_data.config_lock, flags); list_for_each_entry(port, &fsf_req->adapter->port_list_head, list) { if ((port->d_id & range) == (elem->nport_did & range)) - zfcp_test_link(port); + zfcp_fc_test_link(port); if (!port->d_id) zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, @@ -241,7 +231,7 @@ void zfcp_fc_incoming_els(struct zfcp_fsf_req *fsf_req) (struct fsf_status_read_buffer *) fsf_req->data; unsigned int els_type = status_buffer->payload.data[0]; - zfcp_san_dbf_event_incoming_els(fsf_req); + zfcp_dbf_san_incoming_els(fsf_req); if (els_type == LS_PLOGI) zfcp_fc_incoming_plogi(fsf_req); else if (els_type == LS_LOGO) @@ -281,19 +271,18 @@ static void zfcp_fc_ns_gid_pn_eval(unsigned long data) port->d_id = ct_iu_resp->d_id & ZFCP_DID_MASK; } -int static zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *erp_action, +static int zfcp_fc_ns_gid_pn_request(struct zfcp_port *port, struct zfcp_gid_pn_data *gid_pn) { - struct zfcp_adapter *adapter = erp_action->adapter; + struct zfcp_adapter *adapter = port->adapter; struct zfcp_fc_ns_handler_data compl_rec; int ret; /* setup parameters for send generic command */ - gid_pn->port = erp_action->port; + gid_pn->port = port; gid_pn->ct.wka_port = &adapter->gs->ds; gid_pn->ct.handler = zfcp_fc_ns_handler; gid_pn->ct.handler_data = (unsigned long) &compl_rec; - gid_pn->ct.timeout = ZFCP_NS_GID_PN_TIMEOUT; gid_pn->ct.req = &gid_pn->req; gid_pn->ct.resp = &gid_pn->resp; sg_init_one(&gid_pn->req, &gid_pn->ct_iu_req, @@ -308,13 +297,12 @@ int static zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *erp_action, gid_pn->ct_iu_req.header.options = ZFCP_CT_SYNCHRONOUS; gid_pn->ct_iu_req.header.cmd_rsp_code = ZFCP_CT_GID_PN; gid_pn->ct_iu_req.header.max_res_size = ZFCP_CT_SIZE_ONE_PAGE / 4; - gid_pn->ct_iu_req.wwpn = erp_action->port->wwpn; + gid_pn->ct_iu_req.wwpn = port->wwpn; init_completion(&compl_rec.done); compl_rec.handler = zfcp_fc_ns_gid_pn_eval; compl_rec.handler_data = (unsigned long) gid_pn; - ret = zfcp_fsf_send_ct(&gid_pn->ct, adapter->pool.fsf_req_erp, - erp_action); + ret = zfcp_fsf_send_ct(&gid_pn->ct, adapter->pool.gid_pn_req); if (!ret) wait_for_completion(&compl_rec.done); return ret; @@ -322,33 +310,56 @@ int static zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *erp_action, /** * zfcp_fc_ns_gid_pn_request - initiate GID_PN nameserver request - * @erp_action: pointer to zfcp_erp_action where GID_PN request is needed + * @port: port where GID_PN request is needed * return: -ENOMEM on error, 0 otherwise */ -int zfcp_fc_ns_gid_pn(struct zfcp_erp_action *erp_action) +static int zfcp_fc_ns_gid_pn(struct zfcp_port *port) { int ret; struct zfcp_gid_pn_data *gid_pn; - struct zfcp_adapter *adapter = erp_action->adapter; + struct zfcp_adapter *adapter = port->adapter; - gid_pn = mempool_alloc(adapter->pool.data_gid_pn, GFP_ATOMIC); + gid_pn = mempool_alloc(adapter->pool.gid_pn_data, GFP_ATOMIC); if (!gid_pn) return -ENOMEM; memset(gid_pn, 0, sizeof(*gid_pn)); - ret = zfcp_wka_port_get(&adapter->gs->ds); + ret = zfcp_fc_wka_port_get(&adapter->gs->ds); if (ret) goto out; - ret = zfcp_fc_ns_gid_pn_request(erp_action, gid_pn); + ret = zfcp_fc_ns_gid_pn_request(port, gid_pn); - zfcp_wka_port_put(&adapter->gs->ds); + zfcp_fc_wka_port_put(&adapter->gs->ds); out: - mempool_free(gid_pn, adapter->pool.data_gid_pn); + mempool_free(gid_pn, adapter->pool.gid_pn_data); return ret; } +void zfcp_fc_port_did_lookup(struct work_struct *work) +{ + int ret; + struct zfcp_port *port = container_of(work, struct zfcp_port, + gid_pn_work); + + ret = zfcp_fc_ns_gid_pn(port); + if (ret) { + /* could not issue gid_pn for some reason */ + zfcp_erp_adapter_reopen(port->adapter, 0, "fcgpn_1", NULL); + goto out; + } + + if (!port->d_id) { + zfcp_erp_port_failed(port, "fcgpn_2", NULL); + goto out; + } + + zfcp_erp_port_reopen(port, 0, "fcgpn_3", NULL); +out: + zfcp_port_put(port); +} + /** * zfcp_fc_plogi_evaluate - evaluate PLOGI playload * @port: zfcp_port structure @@ -404,6 +415,7 @@ static void zfcp_fc_adisc_handler(unsigned long data) /* port is good, unblock rport without going through erp */ zfcp_scsi_schedule_rport_register(port); out: + atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status); zfcp_port_put(port); kfree(adisc); } @@ -450,28 +462,36 @@ void zfcp_fc_link_test_work(struct work_struct *work) port->rport_task = RPORT_DEL; zfcp_scsi_rport_work(&port->rport_work); + /* only issue one test command at one time per port */ + if (atomic_read(&port->status) & ZFCP_STATUS_PORT_LINK_TEST) + goto out; + + atomic_set_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status); + retval = zfcp_fc_adisc(port); if (retval == 0) return; /* send of ADISC was not possible */ + atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status); zfcp_erp_port_forced_reopen(port, 0, "fcltwk1", NULL); +out: zfcp_port_put(port); } /** - * zfcp_test_link - lightweight link test procedure + * zfcp_fc_test_link - lightweight link test procedure * @port: port to be tested * * Test status of a link to a remote port using the ELS command ADISC. * If there is a problem with the remote port, error recovery steps * will be triggered. */ -void zfcp_test_link(struct zfcp_port *port) +void zfcp_fc_test_link(struct zfcp_port *port) { zfcp_port_get(port); - if (!queue_work(zfcp_data.work_queue, &port->test_link_work)) + if (!queue_work(port->adapter->work_queue, &port->test_link_work)) zfcp_port_put(port); } @@ -479,7 +499,7 @@ static void zfcp_free_sg_env(struct zfcp_gpn_ft *gpn_ft, int buf_num) { struct scatterlist *sg = &gpn_ft->sg_req; - kfree(sg_virt(sg)); /* free request buffer */ + kmem_cache_free(zfcp_data.gpn_ft_cache, sg_virt(sg)); zfcp_sg_free_table(gpn_ft->sg_resp, buf_num); kfree(gpn_ft); @@ -494,7 +514,7 @@ static struct zfcp_gpn_ft *zfcp_alloc_sg_env(int buf_num) if (!gpn_ft) return NULL; - req = kzalloc(sizeof(struct ct_iu_gpn_ft_req), GFP_KERNEL); + req = kmem_cache_alloc(zfcp_data.gpn_ft_cache, GFP_KERNEL); if (!req) { kfree(gpn_ft); gpn_ft = NULL; @@ -511,9 +531,8 @@ out: } -static int zfcp_scan_issue_gpn_ft(struct zfcp_gpn_ft *gpn_ft, - struct zfcp_adapter *adapter, - int max_bytes) +static int zfcp_fc_send_gpn_ft(struct zfcp_gpn_ft *gpn_ft, + struct zfcp_adapter *adapter, int max_bytes) { struct zfcp_send_ct *ct = &gpn_ft->ct; struct ct_iu_gpn_ft_req *req = sg_virt(&gpn_ft->sg_req); @@ -536,19 +555,18 @@ static int zfcp_scan_issue_gpn_ft(struct zfcp_gpn_ft *gpn_ft, ct->wka_port = &adapter->gs->ds; ct->handler = zfcp_fc_ns_handler; ct->handler_data = (unsigned long)&compl_rec; - ct->timeout = 10; ct->req = &gpn_ft->sg_req; ct->resp = gpn_ft->sg_resp; init_completion(&compl_rec.done); compl_rec.handler = NULL; - ret = zfcp_fsf_send_ct(ct, NULL, NULL); + ret = zfcp_fsf_send_ct(ct, NULL); if (!ret) wait_for_completion(&compl_rec.done); return ret; } -static void zfcp_validate_port(struct zfcp_port *port) +static void zfcp_fc_validate_port(struct zfcp_port *port) { struct zfcp_adapter *adapter = port->adapter; @@ -568,7 +586,7 @@ static void zfcp_validate_port(struct zfcp_port *port) zfcp_port_dequeue(port); } -static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft, int max_entries) +static int zfcp_fc_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft, int max_entries) { struct zfcp_send_ct *ct = &gpn_ft->ct; struct scatterlist *sg = gpn_ft->sg_resp; @@ -595,7 +613,7 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft, int max_entries) return -E2BIG; } - down(&zfcp_data.config_sema); + mutex_lock(&zfcp_data.config_mutex); /* first entry is the header */ for (x = 1; x < max_entries && !last; x++) { @@ -628,16 +646,16 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft, int max_entries) zfcp_erp_wait(adapter); list_for_each_entry_safe(port, tmp, &adapter->port_list_head, list) - zfcp_validate_port(port); - up(&zfcp_data.config_sema); + zfcp_fc_validate_port(port); + mutex_unlock(&zfcp_data.config_mutex); return ret; } /** - * zfcp_scan_ports - scan remote ports and attach new ports + * zfcp_fc_scan_ports - scan remote ports and attach new ports * @adapter: pointer to struct zfcp_adapter */ -int zfcp_scan_ports(struct zfcp_adapter *adapter) +int zfcp_fc_scan_ports(struct zfcp_adapter *adapter) { int ret, i; struct zfcp_gpn_ft *gpn_ft; @@ -652,7 +670,7 @@ int zfcp_scan_ports(struct zfcp_adapter *adapter) fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPIV) return 0; - ret = zfcp_wka_port_get(&adapter->gs->ds); + ret = zfcp_fc_wka_port_get(&adapter->gs->ds); if (ret) return ret; @@ -663,9 +681,9 @@ int zfcp_scan_ports(struct zfcp_adapter *adapter) } for (i = 0; i < 3; i++) { - ret = zfcp_scan_issue_gpn_ft(gpn_ft, adapter, max_bytes); + ret = zfcp_fc_send_gpn_ft(gpn_ft, adapter, max_bytes); if (!ret) { - ret = zfcp_scan_eval_gpn_ft(gpn_ft, max_entries); + ret = zfcp_fc_eval_gpn_ft(gpn_ft, max_entries); if (ret == -EAGAIN) ssleep(1); else @@ -674,14 +692,14 @@ int zfcp_scan_ports(struct zfcp_adapter *adapter) } zfcp_free_sg_env(gpn_ft, buf_num); out: - zfcp_wka_port_put(&adapter->gs->ds); + zfcp_fc_wka_port_put(&adapter->gs->ds); return ret; } -void _zfcp_scan_ports_later(struct work_struct *work) +void _zfcp_fc_scan_ports_later(struct work_struct *work) { - zfcp_scan_ports(container_of(work, struct zfcp_adapter, scan_work)); + zfcp_fc_scan_ports(container_of(work, struct zfcp_adapter, scan_work)); } struct zfcp_els_fc_job { @@ -732,7 +750,7 @@ int zfcp_fc_execute_els_fc_job(struct fc_bsg_job *job) els_fc_job->els.adapter = adapter; if (rport) { read_lock_irq(&zfcp_data.config_lock); - port = rport->dd_data; + port = zfcp_get_port_by_wwpn(adapter, rport->port_name); if (port) els_fc_job->els.d_id = port->d_id; read_unlock_irq(&zfcp_data.config_lock); @@ -771,7 +789,7 @@ static void zfcp_fc_generic_ct_handler(unsigned long data) job->state_flags = FC_RQST_STATE_DONE; job->job_done(job); - zfcp_wka_port_put(ct_fc_job->ct.wka_port); + zfcp_fc_wka_port_put(ct_fc_job->ct.wka_port); kfree(ct_fc_job); } @@ -817,7 +835,7 @@ int zfcp_fc_execute_ct_fc_job(struct fc_bsg_job *job) return -EINVAL; /* no such service */ } - ret = zfcp_wka_port_get(ct_fc_job->ct.wka_port); + ret = zfcp_fc_wka_port_get(ct_fc_job->ct.wka_port); if (ret) { kfree(ct_fc_job); return ret; @@ -825,16 +843,40 @@ int zfcp_fc_execute_ct_fc_job(struct fc_bsg_job *job) ct_fc_job->ct.req = job->request_payload.sg_list; ct_fc_job->ct.resp = job->reply_payload.sg_list; - ct_fc_job->ct.timeout = ZFCP_FSF_REQUEST_TIMEOUT; ct_fc_job->ct.handler = zfcp_fc_generic_ct_handler; ct_fc_job->ct.handler_data = (unsigned long) ct_fc_job; ct_fc_job->ct.completion = NULL; ct_fc_job->job = job; - ret = zfcp_fsf_send_ct(&ct_fc_job->ct, NULL, NULL); + ret = zfcp_fsf_send_ct(&ct_fc_job->ct, NULL); if (ret) { kfree(ct_fc_job); - zfcp_wka_port_put(ct_fc_job->ct.wka_port); + zfcp_fc_wka_port_put(ct_fc_job->ct.wka_port); } return ret; } + +int zfcp_fc_gs_setup(struct zfcp_adapter *adapter) +{ + struct zfcp_wka_ports *wka_ports; + + wka_ports = kzalloc(sizeof(struct zfcp_wka_ports), GFP_KERNEL); + if (!wka_ports) + return -ENOMEM; + + adapter->gs = wka_ports; + zfcp_fc_wka_port_init(&wka_ports->ms, FC_FID_MGMT_SERV, adapter); + zfcp_fc_wka_port_init(&wka_ports->ts, FC_FID_TIME_SERV, adapter); + zfcp_fc_wka_port_init(&wka_ports->ds, FC_FID_DIR_SERV, adapter); + zfcp_fc_wka_port_init(&wka_ports->as, FC_FID_ALIASES, adapter); + zfcp_fc_wka_port_init(&wka_ports->ks, FC_FID_SEC_KEY, adapter); + + return 0; +} + +void zfcp_fc_gs_destroy(struct zfcp_adapter *adapter) +{ + kfree(adapter->gs); + adapter->gs = NULL; +} + diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index 47795fb..f09c863 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -11,9 +11,7 @@ #include <linux/blktrace_api.h> #include "zfcp_ext.h" - -#define ZFCP_REQ_AUTO_CLEANUP 0x00000002 -#define ZFCP_REQ_NO_QTCB 0x00000008 +#include "zfcp_dbf.h" static void zfcp_fsf_request_timeout_handler(unsigned long data) { @@ -111,43 +109,15 @@ static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) void zfcp_fsf_req_free(struct zfcp_fsf_req *req) { if (likely(req->pool)) { + if (likely(req->qtcb)) + mempool_free(req->qtcb, req->adapter->pool.qtcb_pool); mempool_free(req, req->pool); return; } - if (req->qtcb) { - kmem_cache_free(zfcp_data.fsf_req_qtcb_cache, req); - return; - } -} - -/** - * zfcp_fsf_req_dismiss_all - dismiss all fsf requests - * @adapter: pointer to struct zfcp_adapter - * - * Never ever call this without shutting down the adapter first. - * Otherwise the adapter would continue using and corrupting s390 storage. - * Included BUG_ON() call to ensure this is done. - * ERP is supposed to be the only user of this function. - */ -void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) -{ - struct zfcp_fsf_req *req, *tmp; - unsigned long flags; - LIST_HEAD(remove_queue); - unsigned int i; - - BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP); - spin_lock_irqsave(&adapter->req_list_lock, flags); - for (i = 0; i < REQUEST_LIST_SIZE; i++) - list_splice_init(&adapter->req_list[i], &remove_queue); - spin_unlock_irqrestore(&adapter->req_list_lock, flags); - - list_for_each_entry_safe(req, tmp, &remove_queue, list) { - list_del(&req->list); - req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; - zfcp_fsf_req_complete(req); - } + if (likely(req->qtcb)) + kmem_cache_free(zfcp_data.qtcb_cache, req->qtcb); + kfree(req); } static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req) @@ -278,13 +248,13 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) struct fsf_status_read_buffer *sr_buf = req->data; if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { - zfcp_hba_dbf_event_fsf_unsol("dism", adapter, sr_buf); - mempool_free(sr_buf, adapter->pool.data_status_read); + zfcp_dbf_hba_fsf_unsol("dism", adapter->dbf, sr_buf); + mempool_free(sr_buf, adapter->pool.status_read_data); zfcp_fsf_req_free(req); return; } - zfcp_hba_dbf_event_fsf_unsol("read", adapter, sr_buf); + zfcp_dbf_hba_fsf_unsol("read", adapter->dbf, sr_buf); switch (sr_buf->status_type) { case FSF_STATUS_READ_PORT_CLOSED: @@ -299,7 +269,7 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) dev_warn(&adapter->ccw_device->dev, "The error threshold for checksum statistics " "has been exceeded\n"); - zfcp_hba_dbf_event_berr(adapter, req); + zfcp_dbf_hba_berr(adapter->dbf, req); break; case FSF_STATUS_READ_LINK_DOWN: zfcp_fsf_status_read_link_down(req); @@ -331,11 +301,11 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) break; } - mempool_free(sr_buf, adapter->pool.data_status_read); + mempool_free(sr_buf, adapter->pool.status_read_data); zfcp_fsf_req_free(req); atomic_inc(&adapter->stat_miss); - queue_work(zfcp_data.work_queue, &adapter->stat_work); + queue_work(adapter->work_queue, &adapter->stat_work); } static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) @@ -385,7 +355,7 @@ static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) struct fsf_qtcb *qtcb = req->qtcb; union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual; - zfcp_hba_dbf_event_fsf_response(req); + zfcp_dbf_hba_fsf_response(req); if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { req->status |= ZFCP_STATUS_FSFREQ_ERROR | @@ -458,7 +428,7 @@ static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) * is called to process the completion status and trigger further * events related to the FSF request. */ -void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) +static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) { if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { zfcp_fsf_status_read_handler(req); @@ -472,23 +442,40 @@ void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) if (req->erp_action) zfcp_erp_notify(req->erp_action, 0); - req->status |= ZFCP_STATUS_FSFREQ_COMPLETED; if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) zfcp_fsf_req_free(req); else - /* notify initiator waiting for the requests completion */ - /* - * FIXME: Race! We must not access fsf_req here as it might have been - * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED - * flag. It's an improbable case. But, we have the same paranoia for - * the cleanup flag already. - * Might better be handled using complete()? - * (setting the flag and doing wakeup ought to be atomic - * with regard to checking the flag as long as waitqueue is - * part of the to be released structure) - */ - wake_up(&req->completion_wq); + complete(&req->completion); +} + +/** + * zfcp_fsf_req_dismiss_all - dismiss all fsf requests + * @adapter: pointer to struct zfcp_adapter + * + * Never ever call this without shutting down the adapter first. + * Otherwise the adapter would continue using and corrupting s390 storage. + * Included BUG_ON() call to ensure this is done. + * ERP is supposed to be the only user of this function. + */ +void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) +{ + struct zfcp_fsf_req *req, *tmp; + unsigned long flags; + LIST_HEAD(remove_queue); + unsigned int i; + + BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP); + spin_lock_irqsave(&adapter->req_list_lock, flags); + for (i = 0; i < REQUEST_LIST_SIZE; i++) + list_splice_init(&adapter->req_list[i], &remove_queue); + spin_unlock_irqrestore(&adapter->req_list_lock, flags); + + list_for_each_entry_safe(req, tmp, &remove_queue, list) { + list_del(&req->list); + req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; + zfcp_fsf_req_complete(req); + } } static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) @@ -650,79 +637,77 @@ static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) } } -static int zfcp_fsf_sbal_check(struct zfcp_adapter *adapter) +static int zfcp_fsf_sbal_check(struct zfcp_qdio *qdio) { - struct zfcp_qdio_queue *req_q = &adapter->req_q; + struct zfcp_qdio_queue *req_q = &qdio->req_q; - spin_lock_bh(&adapter->req_q_lock); + spin_lock_bh(&qdio->req_q_lock); if (atomic_read(&req_q->count)) return 1; - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return 0; } -static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter) +static int zfcp_fsf_req_sbal_get(struct zfcp_qdio *qdio) { + struct zfcp_adapter *adapter = qdio->adapter; long ret; - spin_unlock_bh(&adapter->req_q_lock); - ret = wait_event_interruptible_timeout(adapter->request_wq, - zfcp_fsf_sbal_check(adapter), 5 * HZ); + spin_unlock_bh(&qdio->req_q_lock); + ret = wait_event_interruptible_timeout(qdio->req_q_wq, + zfcp_fsf_sbal_check(qdio), 5 * HZ); if (ret > 0) return 0; if (!ret) { - atomic_inc(&adapter->qdio_outb_full); + atomic_inc(&qdio->req_q_full); /* assume hanging outbound queue, try queue recovery */ zfcp_erp_adapter_reopen(adapter, 0, "fsrsg_1", NULL); } - spin_lock_bh(&adapter->req_q_lock); + spin_lock_bh(&qdio->req_q_lock); return -EIO; } -static struct zfcp_fsf_req *zfcp_fsf_alloc_noqtcb(mempool_t *pool) +static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool) { struct zfcp_fsf_req *req; - req = mempool_alloc(pool, GFP_ATOMIC); - if (!req) + + if (likely(pool)) + req = mempool_alloc(pool, GFP_ATOMIC); + else + req = kmalloc(sizeof(*req), GFP_ATOMIC); + + if (unlikely(!req)) return NULL; + memset(req, 0, sizeof(*req)); req->pool = pool; return req; } -static struct zfcp_fsf_req *zfcp_fsf_alloc_qtcb(mempool_t *pool) +static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool) { - struct zfcp_fsf_req_qtcb *qtcb; + struct fsf_qtcb *qtcb; if (likely(pool)) qtcb = mempool_alloc(pool, GFP_ATOMIC); else - qtcb = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache, - GFP_ATOMIC); + qtcb = kmem_cache_alloc(zfcp_data.qtcb_cache, GFP_ATOMIC); + if (unlikely(!qtcb)) return NULL; memset(qtcb, 0, sizeof(*qtcb)); - qtcb->fsf_req.qtcb = &qtcb->qtcb; - qtcb->fsf_req.pool = pool; - - return &qtcb->fsf_req; + return qtcb; } -static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter, - u32 fsf_cmd, int req_flags, - mempool_t *pool) +static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio, + u32 fsf_cmd, mempool_t *pool) { struct qdio_buffer_element *sbale; - - struct zfcp_fsf_req *req; - struct zfcp_qdio_queue *req_q = &adapter->req_q; - - if (req_flags & ZFCP_REQ_NO_QTCB) - req = zfcp_fsf_alloc_noqtcb(pool); - else - req = zfcp_fsf_alloc_qtcb(pool); + struct zfcp_qdio_queue *req_q = &qdio->req_q; + struct zfcp_adapter *adapter = qdio->adapter; + struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool); if (unlikely(!req)) return ERR_PTR(-ENOMEM); @@ -732,22 +717,32 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter, INIT_LIST_HEAD(&req->list); init_timer(&req->timer); - init_waitqueue_head(&req->completion_wq); + init_completion(&req->completion); req->adapter = adapter; req->fsf_command = fsf_cmd; req->req_id = adapter->req_no; - req->sbal_number = 1; - req->sbal_first = req_q->first; - req->sbal_last = req_q->first; - req->sbale_curr = 1; + req->queue_req.sbal_number = 1; + req->queue_req.sbal_first = req_q->first; + req->queue_req.sbal_last = req_q->first; + req->queue_req.sbale_curr = 1; - sbale = zfcp_qdio_sbale_req(req); + sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); sbale[0].addr = (void *) req->req_id; sbale[0].flags |= SBAL_FLAGS0_COMMAND; - if (likely(req->qtcb)) { - req->qtcb->prefix.req_seq_no = req->adapter->fsf_req_seq_no; + if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) { + if (likely(pool)) + req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool); + else + req->qtcb = zfcp_qtcb_alloc(NULL); + + if (unlikely(!req->qtcb)) { + zfcp_fsf_req_free(req); + return ERR_PTR(-ENOMEM); + } + + req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; req->qtcb->prefix.req_id = req->req_id; req->qtcb->prefix.ulp_info = 26; req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command]; @@ -765,15 +760,13 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter, return ERR_PTR(-EIO); } - if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) - req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; - return req; } static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) { struct zfcp_adapter *adapter = req->adapter; + struct zfcp_qdio *qdio = adapter->qdio; unsigned long flags; int idx; int with_qtcb = (req->qtcb != NULL); @@ -784,9 +777,9 @@ static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) list_add_tail(&req->list, &adapter->req_list[idx]); spin_unlock_irqrestore(&adapter->req_list_lock, flags); - req->qdio_outb_usage = atomic_read(&adapter->req_q.count); + req->queue_req.qdio_outb_usage = atomic_read(&qdio->req_q.count); req->issued = get_clock(); - if (zfcp_qdio_send(req)) { + if (zfcp_qdio_send(qdio, &req->queue_req)) { del_timer(&req->timer); spin_lock_irqsave(&adapter->req_list_lock, flags); /* lookup request again, list might have changed */ @@ -811,38 +804,37 @@ static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) * @req_flags: request flags * Returns: 0 on success, ERROR otherwise */ -int zfcp_fsf_status_read(struct zfcp_adapter *adapter) +int zfcp_fsf_status_read(struct zfcp_qdio *qdio) { + struct zfcp_adapter *adapter = qdio->adapter; struct zfcp_fsf_req *req; struct fsf_status_read_buffer *sr_buf; struct qdio_buffer_element *sbale; int retval = -EIO; - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out; - req = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS, - ZFCP_REQ_NO_QTCB, - adapter->pool.fsf_req_status_read); + req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, + adapter->pool.status_read_req); if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } - sbale = zfcp_qdio_sbale_req(req); - sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS; + sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY; - req->sbale_curr = 2; + req->queue_req.sbale_curr = 2; - sr_buf = mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC); + sr_buf = mempool_alloc(adapter->pool.status_read_data, GFP_ATOMIC); if (!sr_buf) { retval = -ENOMEM; goto failed_buf; } memset(sr_buf, 0, sizeof(*sr_buf)); req->data = sr_buf; - sbale = zfcp_qdio_sbale_curr(req); + sbale = zfcp_qdio_sbale_curr(qdio, &req->queue_req); sbale->addr = (void *) sr_buf; sbale->length = sizeof(*sr_buf); @@ -853,12 +845,12 @@ int zfcp_fsf_status_read(struct zfcp_adapter *adapter) goto out; failed_req_send: - mempool_free(sr_buf, adapter->pool.data_status_read); + mempool_free(sr_buf, adapter->pool.status_read_data); failed_buf: zfcp_fsf_req_free(req); - zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); + zfcp_dbf_hba_fsf_unsol("fail", adapter->dbf, NULL); out: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return retval; } @@ -900,7 +892,7 @@ static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) case FSF_ADAPTER_STATUS_AVAILABLE: switch (fsq->word[0]) { case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: - zfcp_test_link(unit->port); + zfcp_fc_test_link(unit->port); /* fall through */ case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: req->status |= ZFCP_STATUS_FSFREQ_ERROR; @@ -925,13 +917,13 @@ struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, { struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req = NULL; - struct zfcp_adapter *adapter = unit->port->adapter; + struct zfcp_qdio *qdio = unit->port->adapter->qdio; - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out; - req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, - 0, adapter->pool.fsf_req_abort); + req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND, + qdio->adapter->pool.scsi_abort); if (IS_ERR(req)) { req = NULL; goto out; @@ -941,7 +933,7 @@ struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, ZFCP_STATUS_COMMON_UNBLOCKED))) goto out_error_free; - sbale = zfcp_qdio_sbale_req(req); + sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; @@ -959,7 +951,7 @@ out_error_free: zfcp_fsf_req_free(req); req = NULL; out: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return req; } @@ -976,7 +968,7 @@ static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) switch (header->fsf_status) { case FSF_GOOD: - zfcp_san_dbf_event_ct_response(req); + zfcp_dbf_san_ct_response(req); send_ct->status = 0; break; case FSF_SERVICE_CLASS_NOT_SUPPORTED: @@ -1035,8 +1027,10 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, struct scatterlist *sg_resp, int max_sbals) { - struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(req); - u32 feat = req->adapter->adapter_features; + struct zfcp_adapter *adapter = req->adapter; + struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(adapter->qdio, + &req->queue_req); + u32 feat = adapter->adapter_features; int bytes; if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) { @@ -1053,18 +1047,25 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, return 0; } - bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, + bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->queue_req, + SBAL_FLAGS0_TYPE_WRITE_READ, sg_req, max_sbals); if (bytes <= 0) return -EIO; req->qtcb->bottom.support.req_buf_length = bytes; - req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; + req->queue_req.sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; - bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, + bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->queue_req, + SBAL_FLAGS0_TYPE_WRITE_READ, sg_resp, max_sbals); if (bytes <= 0) return -EIO; + + /* common settings for ct/gs and els requests */ req->qtcb->bottom.support.resp_buf_length = bytes; + req->qtcb->bottom.support.service_class = FSF_CLASS_3; + req->qtcb->bottom.support.timeout = 2 * R_A_TOV; + zfcp_fsf_start_timer(req, 2 * R_A_TOV + 10); return 0; } @@ -1073,27 +1074,26 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) * @ct: pointer to struct zfcp_send_ct with data for request * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req - * @erp_action: if non-null the Generic Service request sent within ERP */ -int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, - struct zfcp_erp_action *erp_action) +int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool) { struct zfcp_wka_port *wka_port = ct->wka_port; - struct zfcp_adapter *adapter = wka_port->adapter; + struct zfcp_qdio *qdio = wka_port->adapter->qdio; struct zfcp_fsf_req *req; int ret = -EIO; - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out; - req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, - ZFCP_REQ_AUTO_CLEANUP, pool); + req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC, pool); + if (IS_ERR(req)) { ret = PTR_ERR(req); goto out; } + req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; ret = zfcp_fsf_setup_ct_els_sbals(req, ct->req, ct->resp, FSF_MAX_SBALS_PER_REQ); if (ret) @@ -1101,18 +1101,9 @@ int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, req->handler = zfcp_fsf_send_ct_handler; req->qtcb->header.port_handle = wka_port->handle; - req->qtcb->bottom.support.service_class = FSF_CLASS_3; - req->qtcb->bottom.support.timeout = ct->timeout; req->data = ct; - zfcp_san_dbf_event_ct_request(req); - - if (erp_action) { - erp_action->fsf_req = req; - req->erp_action = erp_action; - zfcp_fsf_start_erp_timer(req); - } else - zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); + zfcp_dbf_san_ct_request(req); ret = zfcp_fsf_req_send(req); if (ret) @@ -1122,10 +1113,8 @@ int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, failed_send: zfcp_fsf_req_free(req); - if (erp_action) - erp_action->fsf_req = NULL; out: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return ret; } @@ -1142,7 +1131,7 @@ static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) switch (header->fsf_status) { case FSF_GOOD: - zfcp_san_dbf_event_els_response(req); + zfcp_dbf_san_els_response(req); send_els->status = 0; break; case FSF_SERVICE_CLASS_NOT_SUPPORTED: @@ -1152,7 +1141,7 @@ static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) switch (header->fsf_status_qual.word[0]){ case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: if (port && (send_els->ls_code != ZFCP_LS_ADISC)) - zfcp_test_link(port); + zfcp_fc_test_link(port); /*fall through */ case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: case FSF_SQ_RETRY_IF_POSSIBLE: @@ -1188,35 +1177,32 @@ skip_fsfstatus: int zfcp_fsf_send_els(struct zfcp_send_els *els) { struct zfcp_fsf_req *req; - struct zfcp_adapter *adapter = els->adapter; - struct fsf_qtcb_bottom_support *bottom; + struct zfcp_qdio *qdio = els->adapter->qdio; int ret = -EIO; - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out; - req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, - ZFCP_REQ_AUTO_CLEANUP, NULL); + + req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS, NULL); + if (IS_ERR(req)) { ret = PTR_ERR(req); goto out; } + req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; ret = zfcp_fsf_setup_ct_els_sbals(req, els->req, els->resp, 2); if (ret) goto failed_send; - bottom = &req->qtcb->bottom.support; + req->qtcb->bottom.support.d_id = els->d_id; req->handler = zfcp_fsf_send_els_handler; - bottom->d_id = els->d_id; - bottom->service_class = FSF_CLASS_3; - bottom->timeout = 2 * R_A_TOV; req->data = els; - zfcp_san_dbf_event_els_request(req); + zfcp_dbf_san_els_request(req); - zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); ret = zfcp_fsf_req_send(req); if (ret) goto failed_send; @@ -1226,7 +1212,7 @@ int zfcp_fsf_send_els(struct zfcp_send_els *els) failed_send: zfcp_fsf_req_free(req); out: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return ret; } @@ -1234,22 +1220,23 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) { struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req; - struct zfcp_adapter *adapter = erp_action->adapter; + struct zfcp_qdio *qdio = erp_action->adapter->qdio; int retval = -EIO; - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out; - req = zfcp_fsf_req_create(adapter, - FSF_QTCB_EXCHANGE_CONFIG_DATA, - ZFCP_REQ_AUTO_CLEANUP, - adapter->pool.fsf_req_erp); + + req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, + qdio->adapter->pool.erp_req); + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } - sbale = zfcp_qdio_sbale_req(req); + req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; + sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; @@ -1269,29 +1256,29 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return retval; } -int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, +int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio, struct fsf_qtcb_bottom_config *data) { struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req = NULL; int retval = -EIO; - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out_unlock; - req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA, - 0, NULL); + req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, NULL); + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out_unlock; } - sbale = zfcp_qdio_sbale_req(req); + sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; req->handler = zfcp_fsf_exchange_config_data_handler; @@ -1307,16 +1294,15 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); retval = zfcp_fsf_req_send(req); - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); if (!retval) - wait_event(req->completion_wq, - req->status & ZFCP_STATUS_FSFREQ_COMPLETED); + wait_for_completion(&req->completion); zfcp_fsf_req_free(req); return retval; out_unlock: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return retval; } @@ -1327,26 +1313,28 @@ out_unlock: */ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) { + struct zfcp_qdio *qdio = erp_action->adapter->qdio; struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req; - struct zfcp_adapter *adapter = erp_action->adapter; int retval = -EIO; - if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) + if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) return -EOPNOTSUPP; - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out; - req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, - ZFCP_REQ_AUTO_CLEANUP, - adapter->pool.fsf_req_erp); + + req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, + qdio->adapter->pool.erp_req); + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } - sbale = zfcp_qdio_sbale_req(req); + req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; + sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; @@ -1361,32 +1349,32 @@ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return retval; } /** * zfcp_fsf_exchange_port_data_sync - request information about local port - * @adapter: pointer to struct zfcp_adapter + * @qdio: pointer to struct zfcp_qdio * @data: pointer to struct fsf_qtcb_bottom_port * Returns: 0 on success, error otherwise */ -int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, +int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio, struct fsf_qtcb_bottom_port *data) { struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req = NULL; int retval = -EIO; - if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) + if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) return -EOPNOTSUPP; - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out_unlock; - req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0, - NULL); + req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, NULL); + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out_unlock; @@ -1395,24 +1383,24 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, if (data) req->data = data; - sbale = zfcp_qdio_sbale_req(req); + sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; req->handler = zfcp_fsf_exchange_port_data_handler; zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); retval = zfcp_fsf_req_send(req); - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); if (!retval) - wait_event(req->completion_wq, - req->status & ZFCP_STATUS_FSFREQ_COMPLETED); + wait_for_completion(&req->completion); + zfcp_fsf_req_free(req); return retval; out_unlock: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return retval; } @@ -1498,25 +1486,25 @@ out: int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) { struct qdio_buffer_element *sbale; - struct zfcp_adapter *adapter = erp_action->adapter; - struct zfcp_fsf_req *req; + struct zfcp_qdio *qdio = erp_action->adapter->qdio; struct zfcp_port *port = erp_action->port; + struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out; - req = zfcp_fsf_req_create(adapter, - FSF_QTCB_OPEN_PORT_WITH_DID, - ZFCP_REQ_AUTO_CLEANUP, - adapter->pool.fsf_req_erp); + req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, + qdio->adapter->pool.erp_req); + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } - sbale = zfcp_qdio_sbale_req(req); + req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; + sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; @@ -1535,7 +1523,7 @@ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) zfcp_port_put(port); } out: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return retval; } @@ -1569,23 +1557,24 @@ static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) { struct qdio_buffer_element *sbale; - struct zfcp_adapter *adapter = erp_action->adapter; + struct zfcp_qdio *qdio = erp_action->adapter->qdio; struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out; - req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, - ZFCP_REQ_AUTO_CLEANUP, - adapter->pool.fsf_req_erp); + req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, + qdio->adapter->pool.erp_req); + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } - sbale = zfcp_qdio_sbale_req(req); + req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; + sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; @@ -1602,7 +1591,7 @@ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return retval; } @@ -1645,24 +1634,24 @@ out: int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port) { struct qdio_buffer_element *sbale; - struct zfcp_adapter *adapter = wka_port->adapter; + struct zfcp_qdio *qdio = wka_port->adapter->qdio; struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out; - req = zfcp_fsf_req_create(adapter, - FSF_QTCB_OPEN_PORT_WITH_DID, - ZFCP_REQ_AUTO_CLEANUP, - adapter->pool.fsf_req_erp); + req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, + qdio->adapter->pool.erp_req); + if (unlikely(IS_ERR(req))) { retval = PTR_ERR(req); goto out; } - sbale = zfcp_qdio_sbale_req(req); + req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; + sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; @@ -1675,7 +1664,7 @@ int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port) if (retval) zfcp_fsf_req_free(req); out: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return retval; } @@ -1700,23 +1689,24 @@ static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port) { struct qdio_buffer_element *sbale; - struct zfcp_adapter *adapter = wka_port->adapter; + struct zfcp_qdio *qdio = wka_port->adapter->qdio; struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out; - req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, - ZFCP_REQ_AUTO_CLEANUP, - adapter->pool.fsf_req_erp); + req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, + qdio->adapter->pool.erp_req); + if (unlikely(IS_ERR(req))) { retval = PTR_ERR(req); goto out; } - sbale = zfcp_qdio_sbale_req(req); + req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; + sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; @@ -1729,7 +1719,7 @@ int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port) if (retval) zfcp_fsf_req_free(req); out: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return retval; } @@ -1791,23 +1781,24 @@ static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) { struct qdio_buffer_element *sbale; - struct zfcp_adapter *adapter = erp_action->adapter; + struct zfcp_qdio *qdio = erp_action->adapter->qdio; struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out; - req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PHYSICAL_PORT, - ZFCP_REQ_AUTO_CLEANUP, - adapter->pool.fsf_req_erp); + req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT, + qdio->adapter->pool.erp_req); + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } - sbale = zfcp_qdio_sbale_req(req); + req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; + sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; @@ -1824,7 +1815,7 @@ int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return retval; } @@ -1895,7 +1886,7 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) case FSF_ADAPTER_STATUS_AVAILABLE: switch (header->fsf_status_qual.word[0]) { case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: - zfcp_test_link(unit->port); + zfcp_fc_test_link(unit->port); /* fall through */ case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: req->status |= ZFCP_STATUS_FSFREQ_ERROR; @@ -1964,22 +1955,24 @@ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) { struct qdio_buffer_element *sbale; struct zfcp_adapter *adapter = erp_action->adapter; + struct zfcp_qdio *qdio = adapter->qdio; struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out; - req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_LUN, - ZFCP_REQ_AUTO_CLEANUP, - adapter->pool.fsf_req_erp); + req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN, + adapter->pool.erp_req); + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } - sbale = zfcp_qdio_sbale_req(req); + req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; + sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; @@ -2000,7 +1993,7 @@ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return retval; } @@ -2028,7 +2021,7 @@ static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) case FSF_ADAPTER_STATUS_AVAILABLE: switch (req->qtcb->header.fsf_status_qual.word[0]) { case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: - zfcp_test_link(unit->port); + zfcp_fc_test_link(unit->port); /* fall through */ case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: req->status |= ZFCP_STATUS_FSFREQ_ERROR; @@ -2049,22 +2042,24 @@ static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) { struct qdio_buffer_element *sbale; - struct zfcp_adapter *adapter = erp_action->adapter; + struct zfcp_qdio *qdio = erp_action->adapter->qdio; struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out; - req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN, - ZFCP_REQ_AUTO_CLEANUP, - adapter->pool.fsf_req_erp); + + req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN, + qdio->adapter->pool.erp_req); + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } - sbale = zfcp_qdio_sbale_req(req); + req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; + sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; @@ -2082,7 +2077,7 @@ int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return retval; } @@ -2141,8 +2136,8 @@ static void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) } if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) trace.flags |= ZFCP_BLK_REQ_ERROR; - trace.inb_usage = fsf_req->qdio_inb_usage; - trace.outb_usage = fsf_req->qdio_outb_usage; + trace.inb_usage = fsf_req->queue_req.qdio_inb_usage; + trace.outb_usage = fsf_req->queue_req.qdio_outb_usage; blk_add_driver_data(req->q, req, &trace, sizeof(trace)); } @@ -2215,11 +2210,11 @@ static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req) } skip_fsfstatus: if (scpnt->result != 0) - zfcp_scsi_dbf_event_result("erro", 3, req->adapter, scpnt, req); + zfcp_dbf_scsi_result("erro", 3, req->adapter->dbf, scpnt, req); else if (scpnt->retries > 0) - zfcp_scsi_dbf_event_result("retr", 4, req->adapter, scpnt, req); + zfcp_dbf_scsi_result("retr", 4, req->adapter->dbf, scpnt, req); else - zfcp_scsi_dbf_event_result("norm", 6, req->adapter, scpnt, req); + zfcp_dbf_scsi_result("norm", 6, req->adapter->dbf, scpnt, req); scpnt->host_scribble = NULL; (scpnt->scsi_done) (scpnt); @@ -2309,7 +2304,7 @@ static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) case FSF_ADAPTER_STATUS_AVAILABLE: if (header->fsf_status_qual.word[0] == FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) - zfcp_test_link(unit->port); + zfcp_fc_test_link(unit->port); req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; } @@ -2350,24 +2345,27 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit, unsigned int sbtype = SBAL_FLAGS0_TYPE_READ; int real_bytes, retval = -EIO; struct zfcp_adapter *adapter = unit->port->adapter; + struct zfcp_qdio *qdio = adapter->qdio; if (unlikely(!(atomic_read(&unit->status) & ZFCP_STATUS_COMMON_UNBLOCKED))) return -EBUSY; - spin_lock(&adapter->req_q_lock); - if (atomic_read(&adapter->req_q.count) <= 0) { - atomic_inc(&adapter->qdio_outb_full); + spin_lock(&qdio->req_q_lock); + if (atomic_read(&qdio->req_q.count) <= 0) { + atomic_inc(&qdio->req_q_full); goto out; } - req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, - ZFCP_REQ_AUTO_CLEANUP, - adapter->pool.fsf_req_scsi); + + req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, + adapter->pool.scsi_req); + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } + req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; zfcp_unit_get(unit); req->unit = unit; req->data = scsi_cmnd; @@ -2419,11 +2417,11 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit, req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + fcp_cmnd_iu->add_fcp_cdb_length + sizeof(u32); - real_bytes = zfcp_qdio_sbals_from_sg(req, sbtype, + real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->queue_req, sbtype, scsi_sglist(scsi_cmnd), FSF_MAX_SBALS_PER_REQ); if (unlikely(real_bytes < 0)) { - if (req->sbal_number >= FSF_MAX_SBALS_PER_REQ) { + if (req->queue_req.sbal_number >= FSF_MAX_SBALS_PER_REQ) { dev_err(&adapter->ccw_device->dev, "Oversize data package, unit 0x%016Lx " "on port 0x%016Lx closed\n", @@ -2448,7 +2446,7 @@ failed_scsi_cmnd: zfcp_fsf_req_free(req); scsi_cmnd->host_scribble = NULL; out: - spin_unlock(&adapter->req_q_lock); + spin_unlock(&qdio->req_q_lock); return retval; } @@ -2463,17 +2461,19 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags) struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req = NULL; struct fcp_cmnd_iu *fcp_cmnd_iu; - struct zfcp_adapter *adapter = unit->port->adapter; + struct zfcp_qdio *qdio = unit->port->adapter->qdio; if (unlikely(!(atomic_read(&unit->status) & ZFCP_STATUS_COMMON_UNBLOCKED))) return NULL; - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out; - req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, 0, - adapter->pool.fsf_req_scsi); + + req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, + qdio->adapter->pool.scsi_req); + if (IS_ERR(req)) { req = NULL; goto out; @@ -2489,7 +2489,7 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags) req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + sizeof(u32); - sbale = zfcp_qdio_sbale_req(req); + sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; @@ -2504,7 +2504,7 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags) zfcp_fsf_req_free(req); req = NULL; out: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); return req; } @@ -2522,6 +2522,7 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, struct zfcp_fsf_cfdc *fsf_cfdc) { struct qdio_buffer_element *sbale; + struct zfcp_qdio *qdio = adapter->qdio; struct zfcp_fsf_req *req = NULL; struct fsf_qtcb_bottom_support *bottom; int direction, retval = -EIO, bytes; @@ -2540,11 +2541,11 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, return ERR_PTR(-EINVAL); } - spin_lock_bh(&adapter->req_q_lock); - if (zfcp_fsf_req_sbal_get(adapter)) + spin_lock_bh(&qdio->req_q_lock); + if (zfcp_fsf_req_sbal_get(qdio)) goto out; - req = zfcp_fsf_req_create(adapter, fsf_cfdc->command, 0, NULL); + req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, NULL); if (IS_ERR(req)) { retval = -EPERM; goto out; @@ -2552,14 +2553,15 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, req->handler = zfcp_fsf_control_file_handler; - sbale = zfcp_qdio_sbale_req(req); + sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); sbale[0].flags |= direction; bottom = &req->qtcb->bottom.support; bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; bottom->option = fsf_cfdc->option; - bytes = zfcp_qdio_sbals_from_sg(req, direction, fsf_cfdc->sg, + bytes = zfcp_qdio_sbals_from_sg(qdio, &req->queue_req, + direction, fsf_cfdc->sg, FSF_MAX_SBALS_PER_REQ); if (bytes != ZFCP_CFDC_MAX_SIZE) { zfcp_fsf_req_free(req); @@ -2569,12 +2571,53 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); retval = zfcp_fsf_req_send(req); out: - spin_unlock_bh(&adapter->req_q_lock); + spin_unlock_bh(&qdio->req_q_lock); if (!retval) { - wait_event(req->completion_wq, - req->status & ZFCP_STATUS_FSFREQ_COMPLETED); + wait_for_completion(&req->completion); return req; } return ERR_PTR(retval); } + +/** + * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO + * @adapter: pointer to struct zfcp_adapter + * @sbal_idx: response queue index of SBAL to be processed + */ +void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx) +{ + struct zfcp_adapter *adapter = qdio->adapter; + struct qdio_buffer *sbal = qdio->resp_q.sbal[sbal_idx]; + struct qdio_buffer_element *sbale; + struct zfcp_fsf_req *fsf_req; + unsigned long flags, req_id; + int idx; + + for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) { + + sbale = &sbal->element[idx]; + req_id = (unsigned long) sbale->addr; + spin_lock_irqsave(&adapter->req_list_lock, flags); + fsf_req = zfcp_reqlist_find(adapter, req_id); + + if (!fsf_req) + /* + * Unknown request means that we have potentially memory + * corruption and must stop the machine immediately. + */ + panic("error: unknown req_id (%lx) on adapter %s.\n", + req_id, dev_name(&adapter->ccw_device->dev)); + + list_del(&fsf_req->list); + spin_unlock_irqrestore(&adapter->req_list_lock, flags); + + fsf_req->queue_req.sbal_response = sbal_idx; + fsf_req->queue_req.qdio_inb_usage = + atomic_read(&qdio->resp_q.count); + zfcp_fsf_req_complete(fsf_req); + + if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY)) + break; + } +} diff --git a/drivers/s390/scsi/zfcp_fsf.h b/drivers/s390/scsi/zfcp_fsf.h index df7f232..dcc7c1d 100644 --- a/drivers/s390/scsi/zfcp_fsf.h +++ b/drivers/s390/scsi/zfcp_fsf.h @@ -3,13 +3,14 @@ * * Interface to the FSF support functions. * - * Copyright IBM Corporation 2002, 2008 + * Copyright IBM Corporation 2002, 2009 */ #ifndef FSF_H #define FSF_H #include <linux/pfn.h> +#include <linux/scatterlist.h> #define FSF_QTCB_CURRENT_VERSION 0x00000001 diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c index e0a2153..6c5228b 100644 --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -3,7 +3,7 @@ * * Setup and helper functions to access QDIO. * - * Copyright IBM Corporation 2002, 2008 + * Copyright IBM Corporation 2002, 2009 */ #define KMSG_COMPONENT "zfcp" @@ -34,29 +34,10 @@ zfcp_qdio_sbale(struct zfcp_qdio_queue *q, int sbal_idx, int sbale_idx) return &q->sbal[sbal_idx]->element[sbale_idx]; } -/** - * zfcp_qdio_free - free memory used by request- and resposne queue - * @adapter: pointer to the zfcp_adapter structure - */ -void zfcp_qdio_free(struct zfcp_adapter *adapter) +static void zfcp_qdio_handler_error(struct zfcp_qdio *qdio, char *id) { - struct qdio_buffer **sbal_req, **sbal_resp; - int p; - - if (adapter->ccw_device) - qdio_free(adapter->ccw_device); - - sbal_req = adapter->req_q.sbal; - sbal_resp = adapter->resp_q.sbal; - - for (p = 0; p < QDIO_MAX_BUFFERS_PER_Q; p += QBUFF_PER_PAGE) { - free_page((unsigned long) sbal_req[p]); - free_page((unsigned long) sbal_resp[p]); - } -} + struct zfcp_adapter *adapter = qdio->adapter; -static void zfcp_qdio_handler_error(struct zfcp_adapter *adapter, char *id) -{ dev_warn(&adapter->ccw_device->dev, "A QDIO problem occurred\n"); zfcp_erp_adapter_reopen(adapter, @@ -75,72 +56,47 @@ static void zfcp_qdio_zero_sbals(struct qdio_buffer *sbal[], int first, int cnt) } /* this needs to be called prior to updating the queue fill level */ -static void zfcp_qdio_account(struct zfcp_adapter *adapter) +static inline void zfcp_qdio_account(struct zfcp_qdio *qdio) { - ktime_t now; - s64 span; + unsigned long long now, span; int free, used; - spin_lock(&adapter->qdio_stat_lock); - now = ktime_get(); - span = ktime_us_delta(now, adapter->req_q_time); - free = max(0, atomic_read(&adapter->req_q.count)); + spin_lock(&qdio->stat_lock); + now = get_clock_monotonic(); + span = (now - qdio->req_q_time) >> 12; + free = atomic_read(&qdio->req_q.count); used = QDIO_MAX_BUFFERS_PER_Q - free; - adapter->req_q_util += used * span; - adapter->req_q_time = now; - spin_unlock(&adapter->qdio_stat_lock); + qdio->req_q_util += used * span; + qdio->req_q_time = now; + spin_unlock(&qdio->stat_lock); } static void zfcp_qdio_int_req(struct ccw_device *cdev, unsigned int qdio_err, int queue_no, int first, int count, unsigned long parm) { - struct zfcp_adapter *adapter = (struct zfcp_adapter *) parm; - struct zfcp_qdio_queue *queue = &adapter->req_q; + struct zfcp_qdio *qdio = (struct zfcp_qdio *) parm; + struct zfcp_qdio_queue *queue = &qdio->req_q; if (unlikely(qdio_err)) { - zfcp_hba_dbf_event_qdio(adapter, qdio_err, first, count); - zfcp_qdio_handler_error(adapter, "qdireq1"); + zfcp_dbf_hba_qdio(qdio->adapter->dbf, qdio_err, first, + count); + zfcp_qdio_handler_error(qdio, "qdireq1"); return; } /* cleanup all SBALs being program-owned now */ zfcp_qdio_zero_sbals(queue->sbal, first, count); - zfcp_qdio_account(adapter); + zfcp_qdio_account(qdio); atomic_add(count, &queue->count); - wake_up(&adapter->request_wq); -} - -static void zfcp_qdio_reqid_check(struct zfcp_adapter *adapter, - unsigned long req_id, int sbal_idx) -{ - struct zfcp_fsf_req *fsf_req; - unsigned long flags; - - spin_lock_irqsave(&adapter->req_list_lock, flags); - fsf_req = zfcp_reqlist_find(adapter, req_id); - - if (!fsf_req) - /* - * Unknown request means that we have potentially memory - * corruption and must stop the machine immediatly. - */ - panic("error: unknown request id (%lx) on adapter %s.\n", - req_id, dev_name(&adapter->ccw_device->dev)); - - zfcp_reqlist_remove(adapter, fsf_req); - spin_unlock_irqrestore(&adapter->req_list_lock, flags); - - fsf_req->sbal_response = sbal_idx; - fsf_req->qdio_inb_usage = atomic_read(&adapter->resp_q.count); - zfcp_fsf_req_complete(fsf_req); + wake_up(&qdio->req_q_wq); } -static void zfcp_qdio_resp_put_back(struct zfcp_adapter *adapter, int processed) +static void zfcp_qdio_resp_put_back(struct zfcp_qdio *qdio, int processed) { - struct zfcp_qdio_queue *queue = &adapter->resp_q; - struct ccw_device *cdev = adapter->ccw_device; + struct zfcp_qdio_queue *queue = &qdio->resp_q; + struct ccw_device *cdev = qdio->adapter->ccw_device; u8 count, start = queue->first; unsigned int retval; @@ -162,14 +118,13 @@ static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int qdio_err, int queue_no, int first, int count, unsigned long parm) { - struct zfcp_adapter *adapter = (struct zfcp_adapter *) parm; - struct zfcp_qdio_queue *queue = &adapter->resp_q; - struct qdio_buffer_element *sbale; - int sbal_idx, sbale_idx, sbal_no; + struct zfcp_qdio *qdio = (struct zfcp_qdio *) parm; + int sbal_idx, sbal_no; if (unlikely(qdio_err)) { - zfcp_hba_dbf_event_qdio(adapter, qdio_err, first, count); - zfcp_qdio_handler_error(adapter, "qdires1"); + zfcp_dbf_hba_qdio(qdio->adapter->dbf, qdio_err, first, + count); + zfcp_qdio_handler_error(qdio, "qdires1"); return; } @@ -179,39 +134,27 @@ static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int qdio_err, */ for (sbal_no = 0; sbal_no < count; sbal_no++) { sbal_idx = (first + sbal_no) % QDIO_MAX_BUFFERS_PER_Q; - /* go through all SBALEs of SBAL */ - for (sbale_idx = 0; sbale_idx < QDIO_MAX_ELEMENTS_PER_BUFFER; - sbale_idx++) { - sbale = zfcp_qdio_sbale(queue, sbal_idx, sbale_idx); - zfcp_qdio_reqid_check(adapter, - (unsigned long) sbale->addr, - sbal_idx); - if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY)) - break; - }; - - if (unlikely(!(sbale->flags & SBAL_FLAGS_LAST_ENTRY))) - dev_warn(&adapter->ccw_device->dev, - "A QDIO protocol error occurred, " - "operations continue\n"); + zfcp_fsf_reqid_check(qdio, sbal_idx); } /* * put range of SBALs back to response queue * (including SBALs which have already been free before) */ - zfcp_qdio_resp_put_back(adapter, count); + zfcp_qdio_resp_put_back(qdio, count); } /** * zfcp_qdio_sbale_req - return ptr to SBALE of req_q for a struct zfcp_fsf_req - * @fsf_req: pointer to struct fsf_req + * @qdio: pointer to struct zfcp_qdio + * @q_rec: pointer to struct zfcp_queue_rec * Returns: pointer to qdio_buffer_element (SBALE) structure */ -struct qdio_buffer_element *zfcp_qdio_sbale_req(struct zfcp_fsf_req *req) +struct qdio_buffer_element *zfcp_qdio_sbale_req(struct zfcp_qdio *qdio, + struct zfcp_queue_req *q_req) { - return zfcp_qdio_sbale(&req->adapter->req_q, req->sbal_last, 0); + return zfcp_qdio_sbale(&qdio->req_q, q_req->sbal_last, 0); } /** @@ -219,74 +162,80 @@ struct qdio_buffer_element *zfcp_qdio_sbale_req(struct zfcp_fsf_req *req) * @fsf_req: pointer to struct fsf_req * Returns: pointer to qdio_buffer_element (SBALE) structure */ -struct qdio_buffer_element *zfcp_qdio_sbale_curr(struct zfcp_fsf_req *req) +struct qdio_buffer_element *zfcp_qdio_sbale_curr(struct zfcp_qdio *qdio, + struct zfcp_queue_req *q_req) { - return zfcp_qdio_sbale(&req->adapter->req_q, req->sbal_last, - req->sbale_curr); + return zfcp_qdio_sbale(&qdio->req_q, q_req->sbal_last, + q_req->sbale_curr); } -static void zfcp_qdio_sbal_limit(struct zfcp_fsf_req *fsf_req, int max_sbals) +static void zfcp_qdio_sbal_limit(struct zfcp_qdio *qdio, + struct zfcp_queue_req *q_req, int max_sbals) { - int count = atomic_read(&fsf_req->adapter->req_q.count); + int count = atomic_read(&qdio->req_q.count); count = min(count, max_sbals); - fsf_req->sbal_limit = (fsf_req->sbal_first + count - 1) + q_req->sbal_limit = (q_req->sbal_first + count - 1) % QDIO_MAX_BUFFERS_PER_Q; } static struct qdio_buffer_element * -zfcp_qdio_sbal_chain(struct zfcp_fsf_req *fsf_req, unsigned long sbtype) +zfcp_qdio_sbal_chain(struct zfcp_qdio *qdio, struct zfcp_queue_req *q_req, + unsigned long sbtype) { struct qdio_buffer_element *sbale; /* set last entry flag in current SBALE of current SBAL */ - sbale = zfcp_qdio_sbale_curr(fsf_req); + sbale = zfcp_qdio_sbale_curr(qdio, q_req); sbale->flags |= SBAL_FLAGS_LAST_ENTRY; /* don't exceed last allowed SBAL */ - if (fsf_req->sbal_last == fsf_req->sbal_limit) + if (q_req->sbal_last == q_req->sbal_limit) return NULL; /* set chaining flag in first SBALE of current SBAL */ - sbale = zfcp_qdio_sbale_req(fsf_req); + sbale = zfcp_qdio_sbale_req(qdio, q_req); sbale->flags |= SBAL_FLAGS0_MORE_SBALS; /* calculate index of next SBAL */ - fsf_req->sbal_last++; - fsf_req->sbal_last %= QDIO_MAX_BUFFERS_PER_Q; + q_req->sbal_last++; + q_req->sbal_last %= QDIO_MAX_BUFFERS_PER_Q; /* keep this requests number of SBALs up-to-date */ - fsf_req->sbal_number++; + q_req->sbal_number++; /* start at first SBALE of new SBAL */ - fsf_req->sbale_curr = 0; + q_req->sbale_curr = 0; /* set storage-block type for new SBAL */ - sbale = zfcp_qdio_sbale_curr(fsf_req); + sbale = zfcp_qdio_sbale_curr(qdio, q_req); sbale->flags |= sbtype; return sbale; } static struct qdio_buffer_element * -zfcp_qdio_sbale_next(struct zfcp_fsf_req *fsf_req, unsigned long sbtype) +zfcp_qdio_sbale_next(struct zfcp_qdio *qdio, struct zfcp_queue_req *q_req, + unsigned int sbtype) { - if (fsf_req->sbale_curr == ZFCP_LAST_SBALE_PER_SBAL) - return zfcp_qdio_sbal_chain(fsf_req, sbtype); - fsf_req->sbale_curr++; - return zfcp_qdio_sbale_curr(fsf_req); + if (q_req->sbale_curr == ZFCP_LAST_SBALE_PER_SBAL) + return zfcp_qdio_sbal_chain(qdio, q_req, sbtype); + q_req->sbale_curr++; + return zfcp_qdio_sbale_curr(qdio, q_req); } -static void zfcp_qdio_undo_sbals(struct zfcp_fsf_req *fsf_req) +static void zfcp_qdio_undo_sbals(struct zfcp_qdio *qdio, + struct zfcp_queue_req *q_req) { - struct qdio_buffer **sbal = fsf_req->adapter->req_q.sbal; - int first = fsf_req->sbal_first; - int last = fsf_req->sbal_last; + struct qdio_buffer **sbal = qdio->req_q.sbal; + int first = q_req->sbal_first; + int last = q_req->sbal_last; int count = (last - first + QDIO_MAX_BUFFERS_PER_Q) % QDIO_MAX_BUFFERS_PER_Q + 1; zfcp_qdio_zero_sbals(sbal, first, count); } -static int zfcp_qdio_fill_sbals(struct zfcp_fsf_req *fsf_req, +static int zfcp_qdio_fill_sbals(struct zfcp_qdio *qdio, + struct zfcp_queue_req *q_req, unsigned int sbtype, void *start_addr, unsigned int total_length) { @@ -297,10 +246,10 @@ static int zfcp_qdio_fill_sbals(struct zfcp_fsf_req *fsf_req, /* split segment up */ for (addr = start_addr, remaining = total_length; remaining > 0; addr += length, remaining -= length) { - sbale = zfcp_qdio_sbale_next(fsf_req, sbtype); + sbale = zfcp_qdio_sbale_next(qdio, q_req, sbtype); if (!sbale) { - atomic_inc(&fsf_req->adapter->qdio_outb_full); - zfcp_qdio_undo_sbals(fsf_req); + atomic_inc(&qdio->req_q_full); + zfcp_qdio_undo_sbals(qdio, q_req); return -EINVAL; } @@ -322,29 +271,31 @@ static int zfcp_qdio_fill_sbals(struct zfcp_fsf_req *fsf_req, * @max_sbals: upper bound for number of SBALs to be used * Returns: number of bytes, or error (negativ) */ -int zfcp_qdio_sbals_from_sg(struct zfcp_fsf_req *fsf_req, unsigned long sbtype, - struct scatterlist *sg, int max_sbals) +int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *qdio, + struct zfcp_queue_req *q_req, + unsigned long sbtype, struct scatterlist *sg, + int max_sbals) { struct qdio_buffer_element *sbale; int retval, bytes = 0; /* figure out last allowed SBAL */ - zfcp_qdio_sbal_limit(fsf_req, max_sbals); + zfcp_qdio_sbal_limit(qdio, q_req, max_sbals); /* set storage-block type for this request */ - sbale = zfcp_qdio_sbale_req(fsf_req); + sbale = zfcp_qdio_sbale_req(qdio, q_req); sbale->flags |= sbtype; for (; sg; sg = sg_next(sg)) { - retval = zfcp_qdio_fill_sbals(fsf_req, sbtype, sg_virt(sg), - sg->length); + retval = zfcp_qdio_fill_sbals(qdio, q_req, sbtype, + sg_virt(sg), sg->length); if (retval < 0) return retval; bytes += sg->length; } /* assume that no other SBALEs are to follow in the same SBAL */ - sbale = zfcp_qdio_sbale_curr(fsf_req); + sbale = zfcp_qdio_sbale_curr(qdio, q_req); sbale->flags |= SBAL_FLAGS_LAST_ENTRY; return bytes; @@ -352,21 +303,22 @@ int zfcp_qdio_sbals_from_sg(struct zfcp_fsf_req *fsf_req, unsigned long sbtype, /** * zfcp_qdio_send - set PCI flag in first SBALE and send req to QDIO - * @fsf_req: pointer to struct zfcp_fsf_req + * @qdio: pointer to struct zfcp_qdio + * @q_req: pointer to struct zfcp_queue_req * Returns: 0 on success, error otherwise */ -int zfcp_qdio_send(struct zfcp_fsf_req *fsf_req) +int zfcp_qdio_send(struct zfcp_qdio *qdio, struct zfcp_queue_req *q_req) { - struct zfcp_adapter *adapter = fsf_req->adapter; - struct zfcp_qdio_queue *req_q = &adapter->req_q; - int first = fsf_req->sbal_first; - int count = fsf_req->sbal_number; + struct zfcp_qdio_queue *req_q = &qdio->req_q; + int first = q_req->sbal_first; + int count = q_req->sbal_number; int retval; unsigned int qdio_flags = QDIO_FLAG_SYNC_OUTPUT; - zfcp_qdio_account(adapter); + zfcp_qdio_account(qdio); - retval = do_QDIO(adapter->ccw_device, qdio_flags, 0, first, count); + retval = do_QDIO(qdio->adapter->ccw_device, qdio_flags, 0, first, + count); if (unlikely(retval)) { zfcp_qdio_zero_sbals(req_q->sbal, first, count); return retval; @@ -379,63 +331,69 @@ int zfcp_qdio_send(struct zfcp_fsf_req *fsf_req) return 0; } + +static void zfcp_qdio_setup_init_data(struct qdio_initialize *id, + struct zfcp_qdio *qdio) +{ + + id->cdev = qdio->adapter->ccw_device; + id->q_format = QDIO_ZFCP_QFMT; + memcpy(id->adapter_name, dev_name(&id->cdev->dev), 8); + ASCEBC(id->adapter_name, 8); + id->qib_param_field_format = 0; + id->qib_param_field = NULL; + id->input_slib_elements = NULL; + id->output_slib_elements = NULL; + id->no_input_qs = 1; + id->no_output_qs = 1; + id->input_handler = zfcp_qdio_int_resp; + id->output_handler = zfcp_qdio_int_req; + id->int_parm = (unsigned long) qdio; + id->flags = QDIO_INBOUND_0COPY_SBALS | + QDIO_OUTBOUND_0COPY_SBALS | QDIO_USE_OUTBOUND_PCIS; + id->input_sbal_addr_array = (void **) (qdio->resp_q.sbal); + id->output_sbal_addr_array = (void **) (qdio->req_q.sbal); + +} /** * zfcp_qdio_allocate - allocate queue memory and initialize QDIO data * @adapter: pointer to struct zfcp_adapter * Returns: -ENOMEM on memory allocation error or return value from * qdio_allocate */ -int zfcp_qdio_allocate(struct zfcp_adapter *adapter) +static int zfcp_qdio_allocate(struct zfcp_qdio *qdio) { - struct qdio_initialize *init_data; + struct qdio_initialize init_data; - if (zfcp_qdio_buffers_enqueue(adapter->req_q.sbal) || - zfcp_qdio_buffers_enqueue(adapter->resp_q.sbal)) + if (zfcp_qdio_buffers_enqueue(qdio->req_q.sbal) || + zfcp_qdio_buffers_enqueue(qdio->resp_q.sbal)) return -ENOMEM; - init_data = &adapter->qdio_init_data; - - init_data->cdev = adapter->ccw_device; - init_data->q_format = QDIO_ZFCP_QFMT; - memcpy(init_data->adapter_name, dev_name(&adapter->ccw_device->dev), 8); - ASCEBC(init_data->adapter_name, 8); - init_data->qib_param_field_format = 0; - init_data->qib_param_field = NULL; - init_data->input_slib_elements = NULL; - init_data->output_slib_elements = NULL; - init_data->no_input_qs = 1; - init_data->no_output_qs = 1; - init_data->input_handler = zfcp_qdio_int_resp; - init_data->output_handler = zfcp_qdio_int_req; - init_data->int_parm = (unsigned long) adapter; - init_data->flags = QDIO_INBOUND_0COPY_SBALS | - QDIO_OUTBOUND_0COPY_SBALS | QDIO_USE_OUTBOUND_PCIS; - init_data->input_sbal_addr_array = - (void **) (adapter->resp_q.sbal); - init_data->output_sbal_addr_array = - (void **) (adapter->req_q.sbal); - - return qdio_allocate(init_data); + zfcp_qdio_setup_init_data(&init_data, qdio); + + return qdio_allocate(&init_data); } /** * zfcp_close_qdio - close qdio queues for an adapter + * @qdio: pointer to structure zfcp_qdio */ -void zfcp_qdio_close(struct zfcp_adapter *adapter) +void zfcp_qdio_close(struct zfcp_qdio *qdio) { struct zfcp_qdio_queue *req_q; int first, count; - if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) + if (!(atomic_read(&qdio->adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) return; /* clear QDIOUP flag, thus do_QDIO is not called during qdio_shutdown */ - req_q = &adapter->req_q; - spin_lock_bh(&adapter->req_q_lock); - atomic_clear_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status); - spin_unlock_bh(&adapter->req_q_lock); + req_q = &qdio->req_q; + spin_lock_bh(&qdio->req_q_lock); + atomic_clear_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &qdio->adapter->status); + spin_unlock_bh(&qdio->req_q_lock); - qdio_shutdown(adapter->ccw_device, QDIO_FLAG_CLEANUP_USING_CLEAR); + qdio_shutdown(qdio->adapter->ccw_device, + QDIO_FLAG_CLEANUP_USING_CLEAR); /* cleanup used outbound sbals */ count = atomic_read(&req_q->count); @@ -446,50 +404,99 @@ void zfcp_qdio_close(struct zfcp_adapter *adapter) } req_q->first = 0; atomic_set(&req_q->count, 0); - adapter->resp_q.first = 0; - atomic_set(&adapter->resp_q.count, 0); + qdio->resp_q.first = 0; + atomic_set(&qdio->resp_q.count, 0); } /** * zfcp_qdio_open - prepare and initialize response queue - * @adapter: pointer to struct zfcp_adapter + * @qdio: pointer to struct zfcp_qdio * Returns: 0 on success, otherwise -EIO */ -int zfcp_qdio_open(struct zfcp_adapter *adapter) +int zfcp_qdio_open(struct zfcp_qdio *qdio) { struct qdio_buffer_element *sbale; + struct qdio_initialize init_data; + struct ccw_device *cdev = qdio->adapter->ccw_device; int cc; - if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP) + if (atomic_read(&qdio->adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP) return -EIO; - if (qdio_establish(&adapter->qdio_init_data)) + zfcp_qdio_setup_init_data(&init_data, qdio); + + if (qdio_establish(&init_data)) goto failed_establish; - if (qdio_activate(adapter->ccw_device)) + if (qdio_activate(cdev)) goto failed_qdio; for (cc = 0; cc < QDIO_MAX_BUFFERS_PER_Q; cc++) { - sbale = &(adapter->resp_q.sbal[cc]->element[0]); + sbale = &(qdio->resp_q.sbal[cc]->element[0]); sbale->length = 0; sbale->flags = SBAL_FLAGS_LAST_ENTRY; sbale->addr = NULL; } - if (do_QDIO(adapter->ccw_device, QDIO_FLAG_SYNC_INPUT, 0, 0, + if (do_QDIO(cdev, QDIO_FLAG_SYNC_INPUT, 0, 0, QDIO_MAX_BUFFERS_PER_Q)) goto failed_qdio; /* set index of first avalable SBALS / number of available SBALS */ - adapter->req_q.first = 0; - atomic_set(&adapter->req_q.count, QDIO_MAX_BUFFERS_PER_Q); + qdio->req_q.first = 0; + atomic_set(&qdio->req_q.count, QDIO_MAX_BUFFERS_PER_Q); return 0; failed_qdio: - qdio_shutdown(adapter->ccw_device, QDIO_FLAG_CLEANUP_USING_CLEAR); + qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR); failed_establish: - dev_err(&adapter->ccw_device->dev, + dev_err(&cdev->dev, "Setting up the QDIO connection to the FCP adapter failed\n"); return -EIO; } + +void zfcp_qdio_destroy(struct zfcp_qdio *qdio) +{ + struct qdio_buffer **sbal_req, **sbal_resp; + int p; + + if (!qdio) + return; + + if (qdio->adapter->ccw_device) + qdio_free(qdio->adapter->ccw_device); + + sbal_req = qdio->req_q.sbal; + sbal_resp = qdio->resp_q.sbal; + + for (p = 0; p < QDIO_MAX_BUFFERS_PER_Q; p += QBUFF_PER_PAGE) { + free_page((unsigned long) sbal_req[p]); + free_page((unsigned long) sbal_resp[p]); + } + + kfree(qdio); +} + +int zfcp_qdio_setup(struct zfcp_adapter *adapter) +{ + struct zfcp_qdio *qdio; + + qdio = kzalloc(sizeof(struct zfcp_qdio), GFP_KERNEL); + if (!qdio) + return -ENOMEM; + + qdio->adapter = adapter; + + if (zfcp_qdio_allocate(qdio)) { + zfcp_qdio_destroy(qdio); + return -ENOMEM; + } + + spin_lock_init(&qdio->req_q_lock); + spin_lock_init(&qdio->stat_lock); + + adapter->qdio = qdio; + return 0; +} + diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c index 6925a17..3ff726a 100644 --- a/drivers/s390/scsi/zfcp_scsi.c +++ b/drivers/s390/scsi/zfcp_scsi.c @@ -9,8 +9,9 @@ #define KMSG_COMPONENT "zfcp" #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt -#include "zfcp_ext.h" #include <asm/atomic.h> +#include "zfcp_ext.h" +#include "zfcp_dbf.h" static unsigned int default_depth = 32; module_param_named(queue_depth, default_depth, uint, 0600); @@ -52,11 +53,11 @@ static int zfcp_scsi_slave_configure(struct scsi_device *sdp) static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result) { + struct zfcp_adapter *adapter = + (struct zfcp_adapter *) scpnt->device->host->hostdata[0]; set_host_byte(scpnt, result); if ((scpnt->device != NULL) && (scpnt->device->host != NULL)) - zfcp_scsi_dbf_event_result("fail", 4, - (struct zfcp_adapter*) scpnt->device->host->hostdata[0], - scpnt, NULL); + zfcp_dbf_scsi_result("fail", 4, adapter->dbf, scpnt, NULL); /* return directly */ scpnt->scsi_done(scpnt); } @@ -92,7 +93,7 @@ static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt, scsi_result = fc_remote_port_chkready(rport); if (unlikely(scsi_result)) { scpnt->result = scsi_result; - zfcp_scsi_dbf_event_result("fail", 4, adapter, scpnt, NULL); + zfcp_dbf_scsi_result("fail", 4, adapter->dbf, scpnt, NULL); scpnt->scsi_done(scpnt); return 0; } @@ -180,8 +181,8 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt) spin_unlock(&adapter->req_list_lock); if (!old_req) { write_unlock_irqrestore(&adapter->abort_lock, flags); - zfcp_scsi_dbf_event_abort("lte1", adapter, scpnt, NULL, - old_reqid); + zfcp_dbf_scsi_abort("lte1", adapter->dbf, scpnt, NULL, + old_reqid); return FAILED; /* completion could be in progress */ } old_req->data = NULL; @@ -197,16 +198,15 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt) zfcp_erp_wait(adapter); if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_RUNNING)) { - zfcp_scsi_dbf_event_abort("nres", adapter, scpnt, NULL, - old_reqid); + zfcp_dbf_scsi_abort("nres", adapter->dbf, scpnt, NULL, + old_reqid); return SUCCESS; } } if (!abrt_req) return FAILED; - wait_event(abrt_req->completion_wq, - abrt_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); + wait_for_completion(&abrt_req->completion); if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED) dbf_tag = "okay"; @@ -216,7 +216,7 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt) dbf_tag = "fail"; retval = FAILED; } - zfcp_scsi_dbf_event_abort(dbf_tag, adapter, scpnt, abrt_req, old_reqid); + zfcp_dbf_scsi_abort(dbf_tag, adapter->dbf, scpnt, abrt_req, old_reqid); zfcp_fsf_req_free(abrt_req); return retval; } @@ -225,7 +225,7 @@ static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags) { struct zfcp_unit *unit = scpnt->device->hostdata; struct zfcp_adapter *adapter = unit->port->adapter; - struct zfcp_fsf_req *fsf_req; + struct zfcp_fsf_req *fsf_req = NULL; int retval = SUCCESS; int retry = 3; @@ -237,25 +237,23 @@ static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags) zfcp_erp_wait(adapter); if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_RUNNING)) { - zfcp_scsi_dbf_event_devreset("nres", tm_flags, unit, - scpnt); + zfcp_dbf_scsi_devreset("nres", tm_flags, unit, scpnt); return SUCCESS; } } if (!fsf_req) return FAILED; - wait_event(fsf_req->completion_wq, - fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); + wait_for_completion(&fsf_req->completion); if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) { - zfcp_scsi_dbf_event_devreset("fail", tm_flags, unit, scpnt); + zfcp_dbf_scsi_devreset("fail", tm_flags, unit, scpnt); retval = FAILED; } else if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP) { - zfcp_scsi_dbf_event_devreset("nsup", tm_flags, unit, scpnt); + zfcp_dbf_scsi_devreset("nsup", tm_flags, unit, scpnt); retval = FAILED; } else - zfcp_scsi_dbf_event_devreset("okay", tm_flags, unit, scpnt); + zfcp_dbf_scsi_devreset("okay", tm_flags, unit, scpnt); zfcp_fsf_req_free(fsf_req); return retval; @@ -430,7 +428,7 @@ static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host) if (!data) return NULL; - ret = zfcp_fsf_exchange_port_data_sync(adapter, data); + ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data); if (ret) { kfree(data); return NULL; @@ -459,7 +457,7 @@ static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost) if (!data) return; - ret = zfcp_fsf_exchange_port_data_sync(adapter, data); + ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data); if (ret) kfree(data); else { @@ -493,21 +491,6 @@ static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) } /** - * zfcp_scsi_dev_loss_tmo_callbk - Free any reference to rport - * @rport: The rport that is about to be deleted. - */ -static void zfcp_scsi_dev_loss_tmo_callbk(struct fc_rport *rport) -{ - struct zfcp_port *port; - - write_lock_irq(&zfcp_data.config_lock); - port = rport->dd_data; - if (port) - port->rport = NULL; - write_unlock_irq(&zfcp_data.config_lock); -} - -/** * zfcp_scsi_terminate_rport_io - Terminate all I/O on a rport * @rport: The FC rport where to teminate I/O * @@ -518,9 +501,12 @@ static void zfcp_scsi_dev_loss_tmo_callbk(struct fc_rport *rport) static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport) { struct zfcp_port *port; + struct Scsi_Host *shost = rport_to_shost(rport); + struct zfcp_adapter *adapter = + (struct zfcp_adapter *)shost->hostdata[0]; write_lock_irq(&zfcp_data.config_lock); - port = rport->dd_data; + port = zfcp_get_port_by_wwpn(adapter, rport->port_name); if (port) zfcp_port_get(port); write_unlock_irq(&zfcp_data.config_lock); @@ -552,7 +538,6 @@ static void zfcp_scsi_rport_register(struct zfcp_port *port) return; } - rport->dd_data = port; rport->maxframe_size = port->maxframe_size; rport->supported_classes = port->supported_classes; port->rport = rport; @@ -573,7 +558,7 @@ void zfcp_scsi_schedule_rport_register(struct zfcp_port *port) zfcp_port_get(port); port->rport_task = RPORT_ADD; - if (!queue_work(zfcp_data.work_queue, &port->rport_work)) + if (!queue_work(port->adapter->work_queue, &port->rport_work)) zfcp_port_put(port); } @@ -582,8 +567,11 @@ void zfcp_scsi_schedule_rport_block(struct zfcp_port *port) zfcp_port_get(port); port->rport_task = RPORT_DEL; - if (!queue_work(zfcp_data.work_queue, &port->rport_work)) - zfcp_port_put(port); + if (port->rport && queue_work(port->adapter->work_queue, + &port->rport_work)) + return; + + zfcp_port_put(port); } void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter) @@ -662,7 +650,6 @@ struct fc_function_template zfcp_transport_functions = { .reset_fc_host_stats = zfcp_reset_fc_host_stats, .set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo, .get_host_port_state = zfcp_get_host_port_state, - .dev_loss_tmo_callbk = zfcp_scsi_dev_loss_tmo_callbk, .terminate_rport_io = zfcp_scsi_terminate_rport_io, .show_host_port_state = 1, .bsg_request = zfcp_execute_fc_job, diff --git a/drivers/s390/scsi/zfcp_sysfs.c b/drivers/s390/scsi/zfcp_sysfs.c index 0fe5cce..079a8cf 100644 --- a/drivers/s390/scsi/zfcp_sysfs.c +++ b/drivers/s390/scsi/zfcp_sysfs.c @@ -88,7 +88,7 @@ static ssize_t zfcp_sysfs_##_feat##_failed_store(struct device *dev, \ unsigned long val; \ int retval = 0; \ \ - down(&zfcp_data.config_sema); \ + mutex_lock(&zfcp_data.config_mutex); \ if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_REMOVE) { \ retval = -EBUSY; \ goto out; \ @@ -105,7 +105,7 @@ static ssize_t zfcp_sysfs_##_feat##_failed_store(struct device *dev, \ _reopen_id, NULL); \ zfcp_erp_wait(_adapter); \ out: \ - up(&zfcp_data.config_sema); \ + mutex_unlock(&zfcp_data.config_mutex); \ return retval ? retval : (ssize_t) count; \ } \ static ZFCP_DEV_ATTR(_feat, failed, S_IWUSR | S_IRUGO, \ @@ -126,7 +126,7 @@ static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev, if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE) return -EBUSY; - ret = zfcp_scan_ports(adapter); + ret = zfcp_fc_scan_ports(adapter); return ret ? ret : (ssize_t) count; } static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL, @@ -142,7 +142,7 @@ static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, int retval = 0; LIST_HEAD(port_remove_lh); - down(&zfcp_data.config_sema); + mutex_lock(&zfcp_data.config_mutex); if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE) { retval = -EBUSY; goto out; @@ -173,7 +173,7 @@ static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, zfcp_port_put(port); zfcp_port_dequeue(port); out: - up(&zfcp_data.config_sema); + mutex_unlock(&zfcp_data.config_mutex); return retval ? retval : (ssize_t) count; } static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL, @@ -207,7 +207,7 @@ static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, u64 fcp_lun; int retval = -EINVAL; - down(&zfcp_data.config_sema); + mutex_lock(&zfcp_data.config_mutex); if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) { retval = -EBUSY; goto out; @@ -226,7 +226,7 @@ static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, zfcp_erp_wait(unit->port->adapter); zfcp_unit_put(unit); out: - up(&zfcp_data.config_sema); + mutex_unlock(&zfcp_data.config_mutex); return retval ? retval : (ssize_t) count; } static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store); @@ -241,7 +241,7 @@ static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, int retval = 0; LIST_HEAD(unit_remove_lh); - down(&zfcp_data.config_sema); + mutex_lock(&zfcp_data.config_mutex); if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) { retval = -EBUSY; goto out; @@ -282,7 +282,7 @@ static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, zfcp_unit_put(unit); zfcp_unit_dequeue(unit); out: - up(&zfcp_data.config_sema); + mutex_unlock(&zfcp_data.config_mutex); return retval ? retval : (ssize_t) count; } static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); @@ -425,7 +425,7 @@ static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev, if (!qtcb_port) return -ENOMEM; - retval = zfcp_fsf_exchange_port_data_sync(adapter, qtcb_port); + retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port); if (!retval) retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util, qtcb_port->cb_util, qtcb_port->a_util); @@ -451,7 +451,7 @@ static int zfcp_sysfs_adapter_ex_config(struct device *dev, if (!qtcb_config) return -ENOMEM; - retval = zfcp_fsf_exchange_config_data_sync(adapter, qtcb_config); + retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config); if (!retval) *stat_inf = qtcb_config->stat_info; @@ -492,15 +492,15 @@ static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, char *buf) { struct Scsi_Host *scsi_host = class_to_shost(dev); - struct zfcp_adapter *adapter = - (struct zfcp_adapter *) scsi_host->hostdata[0]; + struct zfcp_qdio *qdio = + ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio; u64 util; - spin_lock_bh(&adapter->qdio_stat_lock); - util = adapter->req_q_util; - spin_unlock_bh(&adapter->qdio_stat_lock); + spin_lock_bh(&qdio->stat_lock); + util = qdio->req_q_util; + spin_unlock_bh(&qdio->stat_lock); - return sprintf(buf, "%d %llu\n", atomic_read(&adapter->qdio_outb_full), + return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full), (unsigned long long)util); } static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index 9c23122..82bb3b2 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -1811,6 +1811,12 @@ config ZFCP called zfcp. If you want to compile it as a module, say M here and read <file:Documentation/kbuild/modules.txt>. +config SCSI_PMCRAID + tristate "PMC SIERRA Linux MaxRAID adapter support" + depends on PCI && SCSI + ---help--- + This driver supports the PMC SIERRA MaxRAID adapters. + config SCSI_SRP tristate "SCSI RDMA Protocol helper library" depends on SCSI && PCI diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile index 25429ea..61a94af 100644 --- a/drivers/scsi/Makefile +++ b/drivers/scsi/Makefile @@ -130,6 +130,7 @@ obj-$(CONFIG_SCSI_MVSAS) += mvsas/ obj-$(CONFIG_PS3_ROM) += ps3rom.o obj-$(CONFIG_SCSI_CXGB3_ISCSI) += libiscsi.o libiscsi_tcp.o cxgb3i/ obj-$(CONFIG_SCSI_BNX2_ISCSI) += libiscsi.o bnx2i/ +obj-$(CONFIG_SCSI_PMCRAID) += pmcraid.o obj-$(CONFIG_ARM) += arm/ diff --git a/drivers/scsi/bnx2i/bnx2i_init.c b/drivers/scsi/bnx2i/bnx2i_init.c index ae4b2d5..0c4210d 100644 --- a/drivers/scsi/bnx2i/bnx2i_init.c +++ b/drivers/scsi/bnx2i/bnx2i_init.c @@ -15,11 +15,10 @@ static struct list_head adapter_list = LIST_HEAD_INIT(adapter_list); static u32 adapter_count; -static int bnx2i_reg_device; #define DRV_MODULE_NAME "bnx2i" -#define DRV_MODULE_VERSION "2.0.1d" -#define DRV_MODULE_RELDATE "Mar 25, 2009" +#define DRV_MODULE_VERSION "2.0.1e" +#define DRV_MODULE_RELDATE "June 22, 2009" static char version[] __devinitdata = "Broadcom NetXtreme II iSCSI Driver " DRV_MODULE_NAME \ @@ -31,7 +30,7 @@ MODULE_DESCRIPTION("Broadcom NetXtreme II BCM5706/5708/5709 iSCSI Driver"); MODULE_LICENSE("GPL"); MODULE_VERSION(DRV_MODULE_VERSION); -static DEFINE_RWLOCK(bnx2i_dev_lock); +static DEFINE_MUTEX(bnx2i_dev_lock); unsigned int event_coal_div = 1; module_param(event_coal_div, int, 0664); @@ -100,14 +99,14 @@ struct bnx2i_hba *get_adapter_list_head(void) if (!adapter_count) goto hba_not_found; - read_lock(&bnx2i_dev_lock); + mutex_lock(&bnx2i_dev_lock); list_for_each_entry(tmp_hba, &adapter_list, link) { if (tmp_hba->cnic && tmp_hba->cnic->cm_select_dev) { hba = tmp_hba; break; } } - read_unlock(&bnx2i_dev_lock); + mutex_unlock(&bnx2i_dev_lock); hba_not_found: return hba; } @@ -122,14 +121,14 @@ struct bnx2i_hba *bnx2i_find_hba_for_cnic(struct cnic_dev *cnic) { struct bnx2i_hba *hba, *temp; - read_lock(&bnx2i_dev_lock); + mutex_lock(&bnx2i_dev_lock); list_for_each_entry_safe(hba, temp, &adapter_list, link) { if (hba->cnic == cnic) { - read_unlock(&bnx2i_dev_lock); + mutex_unlock(&bnx2i_dev_lock); return hba; } } - read_unlock(&bnx2i_dev_lock); + mutex_unlock(&bnx2i_dev_lock); return NULL; } @@ -186,18 +185,17 @@ void bnx2i_stop(void *handle) */ void bnx2i_register_device(struct bnx2i_hba *hba) { + int rc; + if (test_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state) || test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic)) { return; } - hba->cnic->register_device(hba->cnic, CNIC_ULP_ISCSI, hba); + rc = hba->cnic->register_device(hba->cnic, CNIC_ULP_ISCSI, hba); - spin_lock(&hba->lock); - bnx2i_reg_device++; - spin_unlock(&hba->lock); - - set_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic); + if (!rc) + set_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic); } @@ -211,10 +209,10 @@ void bnx2i_reg_dev_all(void) { struct bnx2i_hba *hba, *temp; - read_lock(&bnx2i_dev_lock); + mutex_lock(&bnx2i_dev_lock); list_for_each_entry_safe(hba, temp, &adapter_list, link) bnx2i_register_device(hba); - read_unlock(&bnx2i_dev_lock); + mutex_unlock(&bnx2i_dev_lock); } @@ -234,10 +232,6 @@ static void bnx2i_unreg_one_device(struct bnx2i_hba *hba) hba->cnic->unregister_device(hba->cnic, CNIC_ULP_ISCSI); - spin_lock(&hba->lock); - bnx2i_reg_device--; - spin_unlock(&hba->lock); - /* ep_disconnect could come before NETDEV_DOWN, driver won't * see NETDEV_DOWN as it already unregistered itself. */ @@ -255,10 +249,10 @@ void bnx2i_unreg_dev_all(void) { struct bnx2i_hba *hba, *temp; - read_lock(&bnx2i_dev_lock); + mutex_lock(&bnx2i_dev_lock); list_for_each_entry_safe(hba, temp, &adapter_list, link) bnx2i_unreg_one_device(hba); - read_unlock(&bnx2i_dev_lock); + mutex_unlock(&bnx2i_dev_lock); } @@ -267,35 +261,34 @@ void bnx2i_unreg_dev_all(void) * @hba: bnx2i adapter instance * @cnic: cnic device handle * - * Global resource lock and host adapter lock is held during critical sections - * below. This routine is called from cnic_register_driver() context and - * work horse thread which does majority of device specific initialization + * Global resource lock is held during critical sections below. This routine is + * called from either cnic_register_driver() or device hot plug context and + * and does majority of device specific initialization */ static int bnx2i_init_one(struct bnx2i_hba *hba, struct cnic_dev *cnic) { int rc; - read_lock(&bnx2i_dev_lock); - if (bnx2i_reg_device && - !test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic)) { - rc = cnic->register_device(cnic, CNIC_ULP_ISCSI, hba); - if (rc) /* duplicate registration */ - printk(KERN_ERR "bnx2i- dev reg failed\n"); - - spin_lock(&hba->lock); - bnx2i_reg_device++; + mutex_lock(&bnx2i_dev_lock); + rc = cnic->register_device(cnic, CNIC_ULP_ISCSI, hba); + if (!rc) { hba->age++; - spin_unlock(&hba->lock); - set_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic); - } - read_unlock(&bnx2i_dev_lock); - - write_lock(&bnx2i_dev_lock); - list_add_tail(&hba->link, &adapter_list); - adapter_count++; - write_unlock(&bnx2i_dev_lock); - return 0; + list_add_tail(&hba->link, &adapter_list); + adapter_count++; + } else if (rc == -EBUSY) /* duplicate registration */ + printk(KERN_ALERT "bnx2i, duplicate registration" + "hba=%p, cnic=%p\n", hba, cnic); + else if (rc == -EAGAIN) + printk(KERN_ERR "bnx2i, driver not registered\n"); + else if (rc == -EINVAL) + printk(KERN_ERR "bnx2i, invalid type %d\n", CNIC_ULP_ISCSI); + else + printk(KERN_ERR "bnx2i dev reg, unknown error, %d\n", rc); + + mutex_unlock(&bnx2i_dev_lock); + + return rc; } @@ -343,19 +336,15 @@ void bnx2i_ulp_exit(struct cnic_dev *dev) "found, dev 0x%p\n", dev); return; } - write_lock(&bnx2i_dev_lock); + mutex_lock(&bnx2i_dev_lock); list_del_init(&hba->link); adapter_count--; if (test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic)) { hba->cnic->unregister_device(hba->cnic, CNIC_ULP_ISCSI); clear_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic); - - spin_lock(&hba->lock); - bnx2i_reg_device--; - spin_unlock(&hba->lock); } - write_unlock(&bnx2i_dev_lock); + mutex_unlock(&bnx2i_dev_lock); bnx2i_free_hba(hba); } @@ -377,6 +366,8 @@ static int __init bnx2i_mod_init(void) if (!is_power_of_2(sq_size)) sq_size = roundup_pow_of_two(sq_size); + mutex_init(&bnx2i_dev_lock); + bnx2i_scsi_xport_template = iscsi_register_transport(&bnx2i_iscsi_transport); if (!bnx2i_scsi_xport_template) { @@ -412,7 +403,7 @@ static void __exit bnx2i_mod_exit(void) { struct bnx2i_hba *hba; - write_lock(&bnx2i_dev_lock); + mutex_lock(&bnx2i_dev_lock); while (!list_empty(&adapter_list)) { hba = list_entry(adapter_list.next, struct bnx2i_hba, link); list_del(&hba->link); @@ -421,14 +412,11 @@ static void __exit bnx2i_mod_exit(void) if (test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic)) { hba->cnic->unregister_device(hba->cnic, CNIC_ULP_ISCSI); clear_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic); - bnx2i_reg_device--; } - write_unlock(&bnx2i_dev_lock); bnx2i_free_hba(hba); - write_lock(&bnx2i_dev_lock); } - write_unlock(&bnx2i_dev_lock); + mutex_unlock(&bnx2i_dev_lock); iscsi_unregister_transport(&bnx2i_iscsi_transport); cnic_unregister_driver(CNIC_ULP_ISCSI); diff --git a/drivers/scsi/bnx2i/bnx2i_iscsi.c b/drivers/scsi/bnx2i/bnx2i_iscsi.c index f741219..9a7ba71 100644 --- a/drivers/scsi/bnx2i/bnx2i_iscsi.c +++ b/drivers/scsi/bnx2i/bnx2i_iscsi.c @@ -387,6 +387,7 @@ static struct iscsi_endpoint *bnx2i_alloc_ep(struct bnx2i_hba *hba) bnx2i_ep = ep->dd_data; INIT_LIST_HEAD(&bnx2i_ep->link); bnx2i_ep->state = EP_STATE_IDLE; + bnx2i_ep->ep_iscsi_cid = (u16) -1; bnx2i_ep->hba = hba; bnx2i_ep->hba_age = hba->age; hba->ofld_conns_active++; @@ -1160,9 +1161,6 @@ static int bnx2i_task_xmit(struct iscsi_task *task) struct bnx2i_cmd *cmd = task->dd_data; struct iscsi_cmd *hdr = (struct iscsi_cmd *) task->hdr; - if (test_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state)) - return -ENOTCONN; - if (!bnx2i_conn->is_bound) return -ENOTCONN; @@ -1653,15 +1651,18 @@ static struct iscsi_endpoint *bnx2i_ep_connect(struct Scsi_Host *shost, struct iscsi_endpoint *ep; int rc = 0; - if (shost) + if (shost) { /* driver is given scsi host to work with */ hba = iscsi_host_priv(shost); - else + /* Register the device with cnic if not already done so */ + bnx2i_register_device(hba); + } else /* * check if the given destination can be reached through * a iscsi capable NetXtreme2 device */ hba = bnx2i_check_route(dst_addr); + if (!hba) { rc = -ENOMEM; goto check_busy; @@ -1681,8 +1682,6 @@ static struct iscsi_endpoint *bnx2i_ep_connect(struct Scsi_Host *shost, goto net_if_down; } - bnx2i_ep->state = EP_STATE_IDLE; - bnx2i_ep->ep_iscsi_cid = (u16) -1; bnx2i_ep->num_active_cmds = 0; iscsi_cid = bnx2i_alloc_iscsi_cid(hba); if (iscsi_cid == -1) { diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c index 7b1633a..fe11c1d 100644 --- a/drivers/scsi/ch.c +++ b/drivers/scsi/ch.c @@ -353,6 +353,12 @@ ch_readconfig(scsi_changer *ch) /* look up the devices of the data transfer elements */ ch->dt = kmalloc(ch->counts[CHET_DT]*sizeof(struct scsi_device), GFP_KERNEL); + + if (!ch->dt) { + kfree(buffer); + return -ENOMEM; + } + for (elem = 0; elem < ch->counts[CHET_DT]; elem++) { id = -1; lun = 0; diff --git a/drivers/scsi/constants.c b/drivers/scsi/constants.c index e79e181..63abb06 100644 --- a/drivers/scsi/constants.c +++ b/drivers/scsi/constants.c @@ -4,8 +4,7 @@ * Additions for SCSI 2 and Linux 2.2.x by D. Gilbert (990422) * Additions for SCSI 3+ (SPC-3 T10/1416-D Rev 07 3 May 2002) * by D. Gilbert and aeb (20020609) - * Additions for SPC-3 T10/1416-D Rev 21 22 Sept 2004, D. Gilbert 20041025 - * Update to SPC-4 T10/1713-D Rev 5a, 14 June 2006, D. Gilbert 20060702 + * Update to SPC-4 T10/1713-D Rev 20, 22 May 2009, D. Gilbert 20090624 */ #include <linux/blkdev.h> @@ -56,9 +55,9 @@ static const char * cdb_byte0_names[] = { "Read Buffer", /* 3d-3f */ "Update Block", "Read Long(10)", "Write Long(10)", /* 40-41 */ "Change Definition", "Write Same(10)", -/* 42-48 */ "Read sub-channel", "Read TOC/PMA/ATIP", "Read density support", - "Play audio(10)", "Get configuration", "Play audio msf", - "Play audio track/index", +/* 42-48 */ "Unmap/Read sub-channel", "Read TOC/PMA/ATIP", + "Read density support", "Play audio(10)", "Get configuration", + "Play audio msf", "Play audio track/index", /* 49-4f */ "Play track relative(10)", "Get event status notification", "Pause/resume", "Log Select", "Log Sense", "Stop play/scan", NULL, @@ -71,12 +70,13 @@ static const char * cdb_byte0_names[] = { /* 60-67 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 68-6f */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 70-77 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, -/* 78-7f */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, "Variable length", +/* 78-7f */ NULL, NULL, NULL, NULL, NULL, NULL, "Extended CDB", + "Variable length", /* 80-84 */ "Xdwrite(16)", "Rebuild(16)", "Regenerate(16)", "Extended copy", "Receive copy results", /* 85-89 */ "ATA command pass through(16)", "Access control in", "Access control out", "Read(16)", "Memory Export Out(16)", -/* 8a-8f */ "Write(16)", NULL, "Read attributes", "Write attributes", +/* 8a-8f */ "Write(16)", "ORWrite", "Read attributes", "Write attributes", "Write and verify(16)", "Verify(16)", /* 90-94 */ "Pre-fetch(16)", "Synchronize cache(16)", "Lock/unlock cache(16)", "Write same(16)", NULL, @@ -107,22 +107,24 @@ struct value_name_pair { }; static const struct value_name_pair maint_in_arr[] = { - {0x5, "Report device identifier"}, + {0x5, "Report identifying information"}, {0xa, "Report target port groups"}, {0xb, "Report aliases"}, {0xc, "Report supported operation codes"}, {0xd, "Report supported task management functions"}, {0xe, "Report priority"}, {0xf, "Report timestamp"}, + {0x10, "Management protocol in"}, }; #define MAINT_IN_SZ ARRAY_SIZE(maint_in_arr) static const struct value_name_pair maint_out_arr[] = { - {0x6, "Set device identifier"}, + {0x6, "Set identifying information"}, {0xa, "Set target port groups"}, {0xb, "Change aliases"}, {0xe, "Set priority"}, - {0xe, "Set timestamp"}, + {0xf, "Set timestamp"}, + {0x10, "Management protocol out"}, }; #define MAINT_OUT_SZ ARRAY_SIZE(maint_out_arr) @@ -412,6 +414,7 @@ static const struct error_info additional[] = {0x0004, "Beginning-of-partition/medium detected"}, {0x0005, "End-of-data detected"}, {0x0006, "I/O process terminated"}, + {0x0007, "Programmable early warning detected"}, {0x0011, "Audio play operation in progress"}, {0x0012, "Audio play operation paused"}, {0x0013, "Audio play operation successfully completed"}, @@ -425,6 +428,7 @@ static const struct error_info additional[] = {0x001B, "Set capacity operation in progress"}, {0x001C, "Verify operation in progress"}, {0x001D, "ATA pass through information available"}, + {0x001E, "Conflicting SA creation request"}, {0x0100, "No index/sector signal"}, @@ -449,9 +453,12 @@ static const struct error_info additional[] = {0x040B, "Logical unit not accessible, target port in standby state"}, {0x040C, "Logical unit not accessible, target port in unavailable " "state"}, + {0x040D, "Logical unit not ready, structure check required"}, {0x0410, "Logical unit not ready, auxiliary memory not accessible"}, {0x0411, "Logical unit not ready, notify (enable spinup) required"}, {0x0412, "Logical unit not ready, offline"}, + {0x0413, "Logical unit not ready, SA creation in progress"}, + {0x0414, "Logical unit not ready, space allocation in progress"}, {0x0500, "Logical unit does not respond to selection"}, @@ -479,6 +486,9 @@ static const struct error_info additional[] = {0x0B03, "Warning - background self-test failed"}, {0x0B04, "Warning - background pre-scan detected medium error"}, {0x0B05, "Warning - background medium scan detected medium error"}, + {0x0B06, "Warning - non-volatile cache now volatile"}, + {0x0B07, "Warning - degraded power to non-volatile cache"}, + {0x0B08, "Warning - power loss expected"}, {0x0C00, "Write error"}, {0x0C01, "Write error - recovered with auto reallocation"}, @@ -593,6 +603,7 @@ static const struct error_info additional[] = {0x1C02, "Grown defect list not found"}, {0x1D00, "Miscompare during verify operation"}, + {0x1D01, "Miscompare verify of unmapped LBA"}, {0x1E00, "Recovered id with ECC correction"}, @@ -626,6 +637,7 @@ static const struct error_info additional[] = {0x2405, "Security working key frozen"}, {0x2406, "Nonce not unique"}, {0x2407, "Nonce timestamp out of range"}, + {0x2408, "Invalid XCDB"}, {0x2500, "Logical unit not supported"}, @@ -656,10 +668,12 @@ static const struct error_info additional[] = {0x2704, "Persistent write protect"}, {0x2705, "Permanent write protect"}, {0x2706, "Conditional write protect"}, + {0x2707, "Space allocation failed write protect"}, {0x2800, "Not ready to ready change, medium may have changed"}, {0x2801, "Import or export element accessed"}, {0x2802, "Format-layer may have changed"}, + {0x2803, "Import/export element accessed, medium changed"}, {0x2900, "Power on, reset, or bus device reset occurred"}, {0x2901, "Power on occurred"}, @@ -680,11 +694,16 @@ static const struct error_info additional[] = {0x2A07, "Implicit asymmetric access state transition failed"}, {0x2A08, "Priority changed"}, {0x2A09, "Capacity data has changed"}, + {0x2A0A, "Error history I_T nexus cleared"}, + {0x2A0B, "Error history snapshot released"}, + {0x2A0C, "Error recovery attributes have changed"}, + {0x2A0D, "Data encryption capabilities changed"}, {0x2A10, "Timestamp changed"}, {0x2A11, "Data encryption parameters changed by another i_t nexus"}, {0x2A12, "Data encryption parameters changed by vendor specific " "event"}, {0x2A13, "Data encryption key instance counter has changed"}, + {0x2A14, "SA creation capabilities data has changed"}, {0x2B00, "Copy cannot execute since host cannot disconnect"}, @@ -723,6 +742,8 @@ static const struct error_info additional[] = {0x300C, "WORM medium - overwrite attempted"}, {0x300D, "WORM medium - integrity check"}, {0x3010, "Medium not formatted"}, + {0x3011, "Incompatible volume type"}, + {0x3012, "Incompatible volume qualifier"}, {0x3100, "Medium format corrupted"}, {0x3101, "Format command failed"}, @@ -782,6 +803,10 @@ static const struct error_info additional[] = {0x3B15, "Medium magazine unlocked"}, {0x3B16, "Mechanical positioning or changer error"}, {0x3B17, "Read past end of user object"}, + {0x3B18, "Element disabled"}, + {0x3B19, "Element enabled"}, + {0x3B1A, "Data transfer device removed"}, + {0x3B1B, "Data transfer device inserted"}, {0x3D00, "Invalid bits in identify message"}, @@ -882,6 +907,8 @@ static const struct error_info additional[] = {0x5506, "Auxiliary memory out of space"}, {0x5507, "Quota error"}, {0x5508, "Maximum number of supplemental decryption keys exceeded"}, + {0x5509, "Medium auxiliary memory not accessible"}, + {0x550A, "Data currently unavailable"}, {0x5700, "Unable to recover table-of-contents"}, @@ -993,6 +1020,12 @@ static const struct error_info additional[] = {0x5E02, "Standby condition activated by timer"}, {0x5E03, "Idle condition activated by command"}, {0x5E04, "Standby condition activated by command"}, + {0x5E05, "Idle_b condition activated by timer"}, + {0x5E06, "Idle_b condition activated by command"}, + {0x5E07, "Idle_c condition activated by timer"}, + {0x5E08, "Idle_c condition activated by command"}, + {0x5E09, "Standby_y condition activated by timer"}, + {0x5E0A, "Standby_y condition activated by command"}, {0x5E41, "Power state change to active"}, {0x5E42, "Power state change to idle"}, {0x5E43, "Power state change to standby"}, @@ -1091,7 +1124,28 @@ static const struct error_info additional[] = {0x7403, "Incorrect data encryption key"}, {0x7404, "Cryptographic integrity validation failed"}, {0x7405, "Error decrypting data"}, + {0x7406, "Unknown signature verification key"}, + {0x7407, "Encryption parameters not useable"}, + {0x7408, "Digital signature validation failure"}, + {0x7409, "Encryption mode mismatch on read"}, + {0x740A, "Encrypted block not raw read enabled"}, + {0x740B, "Incorrect Encryption parameters"}, + {0x740C, "Unable to decrypt parameter list"}, + {0x740D, "Encryption algorithm disabled"}, + {0x7410, "SA creation parameter value invalid"}, + {0x7411, "SA creation parameter value rejected"}, + {0x7412, "Invalid SA usage"}, + {0x7421, "Data Encryption configuration prevented"}, + {0x7430, "SA creation parameter not supported"}, + {0x7440, "Authentication failed"}, + {0x7461, "External data encryption key manager access error"}, + {0x7462, "External data encryption key manager error"}, + {0x7463, "External data encryption key not found"}, + {0x7464, "External data encryption request not authorized"}, + {0x746E, "External data encryption control timeout"}, + {0x746F, "External data encryption control error"}, {0x7471, "Logical unit access not authorized"}, + {0x7479, "Security conflict in translated device"}, {0, NULL} }; @@ -1103,12 +1157,12 @@ struct error_info2 { static const struct error_info2 additional2[] = { - {0x40,0x00,0x7f,"Ram failure (%x)"}, - {0x40,0x80,0xff,"Diagnostic failure on component (%x)"}, - {0x41,0x00,0xff,"Data path failure (%x)"}, - {0x42,0x00,0xff,"Power-on or self-test failure (%x)"}, - {0x4D,0x00,0xff,"Tagged overlapped commands (queue tag %x)"}, - {0x70,0x00,0xff,"Decompression exception short algorithm id of %x"}, + {0x40, 0x00, 0x7f, "Ram failure (%x)"}, + {0x40, 0x80, 0xff, "Diagnostic failure on component (%x)"}, + {0x41, 0x00, 0xff, "Data path failure (%x)"}, + {0x42, 0x00, 0xff, "Power-on or self-test failure (%x)"}, + {0x4D, 0x00, 0xff, "Tagged overlapped commands (task tag %x)"}, + {0x70, 0x00, 0xff, "Decompression exception short algorithm id of %x"}, {0, 0, 0, NULL} }; @@ -1157,14 +1211,15 @@ scsi_extd_sense_format(unsigned char asc, unsigned char ascq) { int i; unsigned short code = ((asc << 8) | ascq); - for (i=0; additional[i].text; i++) + for (i = 0; additional[i].text; i++) if (additional[i].code12 == code) return additional[i].text; - for (i=0; additional2[i].fmt; i++) + for (i = 0; additional2[i].fmt; i++) { if (additional2[i].code1 == asc && - additional2[i].code2_min >= ascq && - additional2[i].code2_max <= ascq) + ascq >= additional2[i].code2_min && + ascq <= additional2[i].code2_max) return additional2[i].fmt; + } #endif return NULL; } diff --git a/drivers/scsi/device_handler/scsi_dh.c b/drivers/scsi/device_handler/scsi_dh.c index a518f2e..3ee1cbc 100644 --- a/drivers/scsi/device_handler/scsi_dh.c +++ b/drivers/scsi/device_handler/scsi_dh.c @@ -153,12 +153,24 @@ static int scsi_dh_handler_attach(struct scsi_device *sdev, if (sdev->scsi_dh_data) { if (sdev->scsi_dh_data->scsi_dh != scsi_dh) err = -EBUSY; - } else if (scsi_dh->attach) + else + kref_get(&sdev->scsi_dh_data->kref); + } else if (scsi_dh->attach) { err = scsi_dh->attach(sdev); - + if (!err) { + kref_init(&sdev->scsi_dh_data->kref); + sdev->scsi_dh_data->sdev = sdev; + } + } return err; } +static void __detach_handler (struct kref *kref) +{ + struct scsi_dh_data *scsi_dh_data = container_of(kref, struct scsi_dh_data, kref); + scsi_dh_data->scsi_dh->detach(scsi_dh_data->sdev); +} + /* * scsi_dh_handler_detach - Detach a device handler from a device * @sdev - SCSI device the device handler should be detached from @@ -180,7 +192,7 @@ static void scsi_dh_handler_detach(struct scsi_device *sdev, scsi_dh = sdev->scsi_dh_data->scsi_dh; if (scsi_dh && scsi_dh->detach) - scsi_dh->detach(sdev); + kref_put(&sdev->scsi_dh_data->kref, __detach_handler); } /* @@ -440,6 +452,39 @@ int scsi_dh_activate(struct request_queue *q) EXPORT_SYMBOL_GPL(scsi_dh_activate); /* + * scsi_dh_set_params - set the parameters for the device as per the + * string specified in params. + * @q - Request queue that is associated with the scsi_device for + * which the parameters to be set. + * @params - parameters in the following format + * "no_of_params\0param1\0param2\0param3\0...\0" + * for example, string for 2 parameters with value 10 and 21 + * is specified as "2\010\021\0". + */ +int scsi_dh_set_params(struct request_queue *q, const char *params) +{ + int err = -SCSI_DH_NOSYS; + unsigned long flags; + struct scsi_device *sdev; + struct scsi_device_handler *scsi_dh = NULL; + + spin_lock_irqsave(q->queue_lock, flags); + sdev = q->queuedata; + if (sdev && sdev->scsi_dh_data) + scsi_dh = sdev->scsi_dh_data->scsi_dh; + if (scsi_dh && scsi_dh->set_params && get_device(&sdev->sdev_gendev)) + err = 0; + spin_unlock_irqrestore(q->queue_lock, flags); + + if (err) + return err; + err = scsi_dh->set_params(sdev, params); + put_device(&sdev->sdev_gendev); + return err; +} +EXPORT_SYMBOL_GPL(scsi_dh_set_params); + +/* * scsi_dh_handler_exist - Return TRUE(1) if a device handler exists for * the given name. FALSE(0) otherwise. * @name - name of the device handler. @@ -474,7 +519,6 @@ int scsi_dh_attach(struct request_queue *q, const char *name) if (!err) { err = scsi_dh_handler_attach(sdev, scsi_dh); - put_device(&sdev->sdev_gendev); } return err; @@ -505,10 +549,8 @@ void scsi_dh_detach(struct request_queue *q) return; if (sdev->scsi_dh_data) { - /* if sdev is not on internal list, detach */ scsi_dh = sdev->scsi_dh_data->scsi_dh; - if (!device_handler_match(scsi_dh, sdev)) - scsi_dh_handler_detach(sdev, scsi_dh); + scsi_dh_handler_detach(sdev, scsi_dh); } put_device(&sdev->sdev_gendev); } diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c index dba154c..b5cdefa 100644 --- a/drivers/scsi/device_handler/scsi_dh_alua.c +++ b/drivers/scsi/device_handler/scsi_dh_alua.c @@ -663,7 +663,7 @@ static int alua_activate(struct scsi_device *sdev) goto out; } - if (h->tpgs == TPGS_MODE_EXPLICIT && h->state != TPGS_STATE_OPTIMIZED) + if (h->tpgs & TPGS_MODE_EXPLICIT && h->state != TPGS_STATE_OPTIMIZED) err = alua_stpg(sdev, TPGS_STATE_OPTIMIZED, h); out: diff --git a/drivers/scsi/device_handler/scsi_dh_emc.c b/drivers/scsi/device_handler/scsi_dh_emc.c index 0e572d2..0cffe84 100644 --- a/drivers/scsi/device_handler/scsi_dh_emc.c +++ b/drivers/scsi/device_handler/scsi_dh_emc.c @@ -561,6 +561,61 @@ done: return result; } +/* + * params - parameters in the following format + * "no_of_params\0param1\0param2\0param3\0...\0" + * for example, string for 2 parameters with value 10 and 21 + * is specified as "2\010\021\0". + */ +static int clariion_set_params(struct scsi_device *sdev, const char *params) +{ + struct clariion_dh_data *csdev = get_clariion_data(sdev); + unsigned int hr = 0, st = 0, argc; + const char *p = params; + int result = SCSI_DH_OK; + + if ((sscanf(params, "%u", &argc) != 1) || (argc != 2)) + return -EINVAL; + + while (*p++) + ; + if ((sscanf(p, "%u", &st) != 1) || (st > 1)) + return -EINVAL; + + while (*p++) + ; + if ((sscanf(p, "%u", &hr) != 1) || (hr > 1)) + return -EINVAL; + + if (st) + csdev->flags |= CLARIION_SHORT_TRESPASS; + else + csdev->flags &= ~CLARIION_SHORT_TRESPASS; + + if (hr) + csdev->flags |= CLARIION_HONOR_RESERVATIONS; + else + csdev->flags &= ~CLARIION_HONOR_RESERVATIONS; + + /* + * If this path is owned, we have to send a trespass command + * with the new parameters. If not, simply return. Next trespass + * command would use the parameters. + */ + if (csdev->lun_state != CLARIION_LUN_OWNED) + goto done; + + csdev->lun_state = CLARIION_LUN_UNINITIALIZED; + result = send_trespass_cmd(sdev, csdev); + if (result != SCSI_DH_OK) + goto done; + + /* Update status */ + result = clariion_send_inquiry(sdev, csdev); + +done: + return result; +} static const struct scsi_dh_devlist clariion_dev_list[] = { {"DGC", "RAID"}, @@ -581,11 +636,9 @@ static struct scsi_device_handler clariion_dh = { .check_sense = clariion_check_sense, .activate = clariion_activate, .prep_fn = clariion_prep_fn, + .set_params = clariion_set_params, }; -/* - * TODO: need some interface so we can set trespass values - */ static int clariion_bus_attach(struct scsi_device *sdev) { struct scsi_dh_data *scsi_dh_data; diff --git a/drivers/scsi/device_handler/scsi_dh_rdac.c b/drivers/scsi/device_handler/scsi_dh_rdac.c index fd0544f..11c8931 100644 --- a/drivers/scsi/device_handler/scsi_dh_rdac.c +++ b/drivers/scsi/device_handler/scsi_dh_rdac.c @@ -112,6 +112,7 @@ struct c9_inquiry { #define SUBSYS_ID_LEN 16 #define SLOT_ID_LEN 2 +#define ARRAY_LABEL_LEN 31 struct c4_inquiry { u8 peripheral_info; @@ -135,6 +136,8 @@ struct rdac_controller { struct rdac_pg_legacy legacy; struct rdac_pg_expanded expanded; } mode_select; + u8 index; + u8 array_name[ARRAY_LABEL_LEN]; }; struct c8_inquiry { u8 peripheral_info; @@ -198,6 +201,31 @@ static const char *lun_state[] = static LIST_HEAD(ctlr_list); static DEFINE_SPINLOCK(list_lock); +/* + * module parameter to enable rdac debug logging. + * 2 bits for each type of logging, only two types defined for now + * Can be enhanced if required at later point + */ +static int rdac_logging = 1; +module_param(rdac_logging, int, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(rdac_logging, "A bit mask of rdac logging levels, " + "Default is 1 - failover logging enabled, " + "set it to 0xF to enable all the logs"); + +#define RDAC_LOG_FAILOVER 0 +#define RDAC_LOG_SENSE 2 + +#define RDAC_LOG_BITS 2 + +#define RDAC_LOG_LEVEL(SHIFT) \ + ((rdac_logging >> (SHIFT)) & ((1 << (RDAC_LOG_BITS)) - 1)) + +#define RDAC_LOG(SHIFT, sdev, f, arg...) \ +do { \ + if (unlikely(RDAC_LOG_LEVEL(SHIFT))) \ + sdev_printk(KERN_INFO, sdev, RDAC_NAME ": " f "\n", ## arg); \ +} while (0); + static inline struct rdac_dh_data *get_rdac_data(struct scsi_device *sdev) { struct scsi_dh_data *scsi_dh_data = sdev->scsi_dh_data; @@ -303,7 +331,8 @@ static void release_controller(struct kref *kref) kfree(ctlr); } -static struct rdac_controller *get_controller(u8 *subsys_id, u8 *slot_id) +static struct rdac_controller *get_controller(u8 *subsys_id, u8 *slot_id, + char *array_name) { struct rdac_controller *ctlr, *tmp; @@ -324,6 +353,14 @@ static struct rdac_controller *get_controller(u8 *subsys_id, u8 *slot_id) /* initialize fields of controller */ memcpy(ctlr->subsys_id, subsys_id, SUBSYS_ID_LEN); memcpy(ctlr->slot_id, slot_id, SLOT_ID_LEN); + memcpy(ctlr->array_name, array_name, ARRAY_LABEL_LEN); + + /* update the controller index */ + if (slot_id[1] == 0x31) + ctlr->index = 0; + else + ctlr->index = 1; + kref_init(&ctlr->kref); ctlr->use_ms10 = -1; list_add(&ctlr->node, &ctlr_list); @@ -363,9 +400,10 @@ done: return err; } -static int get_lun(struct scsi_device *sdev, struct rdac_dh_data *h) +static int get_lun_info(struct scsi_device *sdev, struct rdac_dh_data *h, + char *array_name) { - int err; + int err, i; struct c8_inquiry *inqp; err = submit_inquiry(sdev, 0xC8, sizeof(struct c8_inquiry), h); @@ -377,6 +415,11 @@ static int get_lun(struct scsi_device *sdev, struct rdac_dh_data *h) inqp->page_id[2] != 'i' || inqp->page_id[3] != 'd') return SCSI_DH_NOSYS; h->lun = inqp->lun[7]; /* Uses only the last byte */ + + for(i=0; i<ARRAY_LABEL_LEN-1; ++i) + *(array_name+i) = inqp->array_user_label[(2*i)+1]; + + *(array_name+ARRAY_LABEL_LEN-1) = '\0'; } return err; } @@ -410,7 +453,7 @@ static int check_ownership(struct scsi_device *sdev, struct rdac_dh_data *h) } static int initialize_controller(struct scsi_device *sdev, - struct rdac_dh_data *h) + struct rdac_dh_data *h, char *array_name) { int err; struct c4_inquiry *inqp; @@ -418,7 +461,8 @@ static int initialize_controller(struct scsi_device *sdev, err = submit_inquiry(sdev, 0xC4, sizeof(struct c4_inquiry), h); if (err == SCSI_DH_OK) { inqp = &h->inq.c4; - h->ctlr = get_controller(inqp->subsys_id, inqp->slot_id); + h->ctlr = get_controller(inqp->subsys_id, inqp->slot_id, + array_name); if (!h->ctlr) err = SCSI_DH_RES_TEMP_UNAVAIL; } @@ -450,6 +494,7 @@ static int mode_select_handle_sense(struct scsi_device *sdev, { struct scsi_sense_hdr sense_hdr; int err = SCSI_DH_IO, ret; + struct rdac_dh_data *h = get_rdac_data(sdev); ret = scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, &sense_hdr); if (!ret) @@ -478,11 +523,14 @@ static int mode_select_handle_sense(struct scsi_device *sdev, err = SCSI_DH_RETRY; break; default: - sdev_printk(KERN_INFO, sdev, - "MODE_SELECT failed with sense %02x/%02x/%02x.\n", - sense_hdr.sense_key, sense_hdr.asc, sense_hdr.ascq); + break; } + RDAC_LOG(RDAC_LOG_FAILOVER, sdev, "array %s, ctlr %d, " + "MODE_SELECT returned with sense %02x/%02x/%02x", + (char *) h->ctlr->array_name, h->ctlr->index, + sense_hdr.sense_key, sense_hdr.asc, sense_hdr.ascq); + done: return err; } @@ -499,7 +547,9 @@ retry: if (!rq) goto done; - sdev_printk(KERN_INFO, sdev, "%s MODE_SELECT command.\n", + RDAC_LOG(RDAC_LOG_FAILOVER, sdev, "array %s, ctlr %d, " + "%s MODE_SELECT command", + (char *) h->ctlr->array_name, h->ctlr->index, (retry_cnt == RDAC_RETRY_COUNT) ? "queueing" : "retrying"); err = blk_execute_rq(q, NULL, rq, 1); @@ -509,8 +559,12 @@ retry: if (err == SCSI_DH_RETRY && retry_cnt--) goto retry; } - if (err == SCSI_DH_OK) + if (err == SCSI_DH_OK) { h->state = RDAC_STATE_ACTIVE; + RDAC_LOG(RDAC_LOG_FAILOVER, sdev, "array %s, ctlr %d, " + "MODE_SELECT completed", + (char *) h->ctlr->array_name, h->ctlr->index); + } done: return err; @@ -525,17 +579,6 @@ static int rdac_activate(struct scsi_device *sdev) if (err != SCSI_DH_OK) goto done; - if (!h->ctlr) { - err = initialize_controller(sdev, h); - if (err != SCSI_DH_OK) - goto done; - } - - if (h->ctlr->use_ms10 == -1) { - err = set_mode_select(sdev, h); - if (err != SCSI_DH_OK) - goto done; - } if (h->lun_state == RDAC_LUN_UNOWNED) err = send_mode_select(sdev, h); done: @@ -559,6 +602,12 @@ static int rdac_check_sense(struct scsi_device *sdev, struct scsi_sense_hdr *sense_hdr) { struct rdac_dh_data *h = get_rdac_data(sdev); + + RDAC_LOG(RDAC_LOG_SENSE, sdev, "array %s, ctlr %d, " + "I/O returned with sense %02x/%02x/%02x", + (char *) h->ctlr->array_name, h->ctlr->index, + sense_hdr->sense_key, sense_hdr->asc, sense_hdr->ascq); + switch (sense_hdr->sense_key) { case NOT_READY: if (sense_hdr->asc == 0x04 && sense_hdr->ascq == 0x01) @@ -628,11 +677,18 @@ static const struct scsi_dh_devlist rdac_dev_list[] = { {"SGI", "IS"}, {"STK", "OPENstorage D280"}, {"SUN", "CSM200_R"}, + {"SUN", "LCSM100_I"}, + {"SUN", "LCSM100_S"}, + {"SUN", "LCSM100_E"}, {"SUN", "LCSM100_F"}, {"DELL", "MD3000"}, {"DELL", "MD3000i"}, + {"DELL", "MD32xx"}, + {"DELL", "MD32xxi"}, {"LSI", "INF-01-00"}, {"ENGENIO", "INF-01-00"}, + {"STK", "FLEXLINE 380"}, + {"SUN", "CSM100_R_FC"}, {NULL, NULL}, }; @@ -656,6 +712,7 @@ static int rdac_bus_attach(struct scsi_device *sdev) struct rdac_dh_data *h; unsigned long flags; int err; + char array_name[ARRAY_LABEL_LEN]; scsi_dh_data = kzalloc(sizeof(struct scsi_device_handler *) + sizeof(*h) , GFP_KERNEL); @@ -670,16 +727,24 @@ static int rdac_bus_attach(struct scsi_device *sdev) h->lun = UNINITIALIZED_LUN; h->state = RDAC_STATE_ACTIVE; - err = get_lun(sdev, h); + err = get_lun_info(sdev, h, array_name); if (err != SCSI_DH_OK) goto failed; - err = check_ownership(sdev, h); + err = initialize_controller(sdev, h, array_name); if (err != SCSI_DH_OK) goto failed; + err = check_ownership(sdev, h); + if (err != SCSI_DH_OK) + goto clean_ctlr; + + err = set_mode_select(sdev, h); + if (err != SCSI_DH_OK) + goto clean_ctlr; + if (!try_module_get(THIS_MODULE)) - goto failed; + goto clean_ctlr; spin_lock_irqsave(sdev->request_queue->queue_lock, flags); sdev->scsi_dh_data = scsi_dh_data; @@ -691,6 +756,9 @@ static int rdac_bus_attach(struct scsi_device *sdev) return 0; +clean_ctlr: + kref_put(&h->ctlr->kref, release_controller); + failed: kfree(scsi_dh_data); sdev_printk(KERN_ERR, sdev, "%s: not attached\n", diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c index 0a5609b..704b8e0 100644 --- a/drivers/scsi/fcoe/fcoe.c +++ b/drivers/scsi/fcoe/fcoe.c @@ -1,5 +1,5 @@ /* - * Copyright(c) 2007 - 2008 Intel Corporation. All rights reserved. + * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, @@ -49,9 +49,20 @@ MODULE_AUTHOR("Open-FCoE.org"); MODULE_DESCRIPTION("FCoE"); MODULE_LICENSE("GPL v2"); +/* Performance tuning parameters for fcoe */ +static unsigned int fcoe_ddp_min; +module_param_named(ddp_min, fcoe_ddp_min, uint, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(ddp_min, "Minimum I/O size in bytes for " \ + "Direct Data Placement (DDP)."); + +DEFINE_MUTEX(fcoe_config_mutex); + +/* fcoe_percpu_clean completion. Waiter protected by fcoe_create_mutex */ +static DECLARE_COMPLETION(fcoe_flush_completion); + /* fcoe host list */ +/* must only by accessed under the RTNL mutex */ LIST_HEAD(fcoe_hostlist); -DEFINE_RWLOCK(fcoe_hostlist_lock); DEFINE_PER_CPU(struct fcoe_percpu_s, fcoe_percpu); /* Function Prototypes */ @@ -66,12 +77,13 @@ static int fcoe_link_ok(struct fc_lport *lp); static struct fc_lport *fcoe_hostlist_lookup(const struct net_device *); static int fcoe_hostlist_add(const struct fc_lport *); -static int fcoe_hostlist_remove(const struct fc_lport *); static void fcoe_check_wait_queue(struct fc_lport *, struct sk_buff *); static int fcoe_device_notification(struct notifier_block *, ulong, void *); static void fcoe_dev_setup(void); static void fcoe_dev_cleanup(void); +static struct fcoe_interface * + fcoe_hostlist_lookup_port(const struct net_device *dev); /* notification function from net device */ static struct notifier_block fcoe_notifier = { @@ -132,6 +144,180 @@ static struct scsi_host_template fcoe_shost_template = { .max_sectors = 0xffff, }; +static int fcoe_fip_recv(struct sk_buff *skb, struct net_device *dev, + struct packet_type *ptype, + struct net_device *orig_dev); +/** + * fcoe_interface_setup() + * @fcoe: new fcoe_interface + * @netdev : ptr to the associated netdevice struct + * + * Returns : 0 for success + * Locking: must be called with the RTNL mutex held + */ +static int fcoe_interface_setup(struct fcoe_interface *fcoe, + struct net_device *netdev) +{ + struct fcoe_ctlr *fip = &fcoe->ctlr; + struct netdev_hw_addr *ha; + u8 flogi_maddr[ETH_ALEN]; + + fcoe->netdev = netdev; + + /* Do not support for bonding device */ + if ((netdev->priv_flags & IFF_MASTER_ALB) || + (netdev->priv_flags & IFF_SLAVE_INACTIVE) || + (netdev->priv_flags & IFF_MASTER_8023AD)) { + return -EOPNOTSUPP; + } + + /* look for SAN MAC address, if multiple SAN MACs exist, only + * use the first one for SPMA */ + rcu_read_lock(); + for_each_dev_addr(netdev, ha) { + if ((ha->type == NETDEV_HW_ADDR_T_SAN) && + (is_valid_ether_addr(fip->ctl_src_addr))) { + memcpy(fip->ctl_src_addr, ha->addr, ETH_ALEN); + fip->spma = 1; + break; + } + } + rcu_read_unlock(); + + /* setup Source Mac Address */ + if (!fip->spma) + memcpy(fip->ctl_src_addr, netdev->dev_addr, netdev->addr_len); + + /* + * Add FCoE MAC address as second unicast MAC address + * or enter promiscuous mode if not capable of listening + * for multiple unicast MACs. + */ + memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); + dev_unicast_add(netdev, flogi_maddr); + if (fip->spma) + dev_unicast_add(netdev, fip->ctl_src_addr); + dev_mc_add(netdev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0); + + /* + * setup the receive function from ethernet driver + * on the ethertype for the given device + */ + fcoe->fcoe_packet_type.func = fcoe_rcv; + fcoe->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); + fcoe->fcoe_packet_type.dev = netdev; + dev_add_pack(&fcoe->fcoe_packet_type); + + fcoe->fip_packet_type.func = fcoe_fip_recv; + fcoe->fip_packet_type.type = htons(ETH_P_FIP); + fcoe->fip_packet_type.dev = netdev; + dev_add_pack(&fcoe->fip_packet_type); + + return 0; +} + +static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb); +static void fcoe_update_src_mac(struct fcoe_ctlr *fip, u8 *old, u8 *new); +static void fcoe_destroy_work(struct work_struct *work); + +/** + * fcoe_interface_create() + * @netdev: network interface + * + * Returns: pointer to a struct fcoe_interface or NULL on error + */ +static struct fcoe_interface *fcoe_interface_create(struct net_device *netdev) +{ + struct fcoe_interface *fcoe; + + fcoe = kzalloc(sizeof(*fcoe), GFP_KERNEL); + if (!fcoe) { + FCOE_NETDEV_DBG(netdev, "Could not allocate fcoe structure\n"); + return NULL; + } + + dev_hold(netdev); + kref_init(&fcoe->kref); + + /* + * Initialize FIP. + */ + fcoe_ctlr_init(&fcoe->ctlr); + fcoe->ctlr.send = fcoe_fip_send; + fcoe->ctlr.update_mac = fcoe_update_src_mac; + + fcoe_interface_setup(fcoe, netdev); + + return fcoe; +} + +/** + * fcoe_interface_cleanup() - clean up netdev configurations + * @fcoe: + * + * Caller must be holding the RTNL mutex + */ +void fcoe_interface_cleanup(struct fcoe_interface *fcoe) +{ + struct net_device *netdev = fcoe->netdev; + struct fcoe_ctlr *fip = &fcoe->ctlr; + u8 flogi_maddr[ETH_ALEN]; + + /* + * Don't listen for Ethernet packets anymore. + * synchronize_net() ensures that the packet handlers are not running + * on another CPU. dev_remove_pack() would do that, this calls the + * unsyncronized version __dev_remove_pack() to avoid multiple delays. + */ + __dev_remove_pack(&fcoe->fcoe_packet_type); + __dev_remove_pack(&fcoe->fip_packet_type); + synchronize_net(); + + /* Delete secondary MAC addresses */ + memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); + dev_unicast_delete(netdev, flogi_maddr); + if (!is_zero_ether_addr(fip->data_src_addr)) + dev_unicast_delete(netdev, fip->data_src_addr); + if (fip->spma) + dev_unicast_delete(netdev, fip->ctl_src_addr); + dev_mc_delete(netdev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0); +} + +/** + * fcoe_interface_release() - fcoe_port kref release function + * @kref: embedded reference count in an fcoe_interface struct + */ +static void fcoe_interface_release(struct kref *kref) +{ + struct fcoe_interface *fcoe; + struct net_device *netdev; + + fcoe = container_of(kref, struct fcoe_interface, kref); + netdev = fcoe->netdev; + /* tear-down the FCoE controller */ + fcoe_ctlr_destroy(&fcoe->ctlr); + kfree(fcoe); + dev_put(netdev); +} + +/** + * fcoe_interface_get() + * @fcoe: + */ +static inline void fcoe_interface_get(struct fcoe_interface *fcoe) +{ + kref_get(&fcoe->kref); +} + +/** + * fcoe_interface_put() + * @fcoe: + */ +static inline void fcoe_interface_put(struct fcoe_interface *fcoe) +{ + kref_put(&fcoe->kref, fcoe_interface_release); +} + /** * fcoe_fip_recv - handle a received FIP frame. * @skb: the receive skb @@ -145,10 +331,10 @@ static int fcoe_fip_recv(struct sk_buff *skb, struct net_device *dev, struct packet_type *ptype, struct net_device *orig_dev) { - struct fcoe_softc *fc; + struct fcoe_interface *fcoe; - fc = container_of(ptype, struct fcoe_softc, fip_packet_type); - fcoe_ctlr_recv(&fc->ctlr, skb); + fcoe = container_of(ptype, struct fcoe_interface, fip_packet_type); + fcoe_ctlr_recv(&fcoe->ctlr, skb); return 0; } @@ -159,7 +345,7 @@ static int fcoe_fip_recv(struct sk_buff *skb, struct net_device *dev, */ static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) { - skb->dev = fcoe_from_ctlr(fip)->real_dev; + skb->dev = fcoe_from_ctlr(fip)->netdev; dev_queue_xmit(skb); } @@ -174,13 +360,13 @@ static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) */ static void fcoe_update_src_mac(struct fcoe_ctlr *fip, u8 *old, u8 *new) { - struct fcoe_softc *fc; + struct fcoe_interface *fcoe; - fc = fcoe_from_ctlr(fip); + fcoe = fcoe_from_ctlr(fip); rtnl_lock(); if (!is_zero_ether_addr(old)) - dev_unicast_delete(fc->real_dev, old); - dev_unicast_add(fc->real_dev, new); + dev_unicast_delete(fcoe->netdev, old); + dev_unicast_add(fcoe->netdev, new); rtnl_unlock(); } @@ -217,30 +403,6 @@ static int fcoe_lport_config(struct fc_lport *lp) } /** - * fcoe_netdev_cleanup() - clean up netdev configurations - * @fc: ptr to the fcoe_softc - */ -void fcoe_netdev_cleanup(struct fcoe_softc *fc) -{ - u8 flogi_maddr[ETH_ALEN]; - - /* Don't listen for Ethernet packets anymore */ - dev_remove_pack(&fc->fcoe_packet_type); - dev_remove_pack(&fc->fip_packet_type); - - /* Delete secondary MAC addresses */ - rtnl_lock(); - memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); - dev_unicast_delete(fc->real_dev, flogi_maddr); - if (!is_zero_ether_addr(fc->ctlr.data_src_addr)) - dev_unicast_delete(fc->real_dev, fc->ctlr.data_src_addr); - if (fc->ctlr.spma) - dev_unicast_delete(fc->real_dev, fc->ctlr.ctl_src_addr); - dev_mc_delete(fc->real_dev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0); - rtnl_unlock(); -} - -/** * fcoe_queue_timer() - fcoe queue timer * @lp: the fc_lport pointer * @@ -265,116 +427,53 @@ static int fcoe_netdev_config(struct fc_lport *lp, struct net_device *netdev) { u32 mfs; u64 wwnn, wwpn; - struct fcoe_softc *fc; - u8 flogi_maddr[ETH_ALEN]; - struct netdev_hw_addr *ha; + struct fcoe_interface *fcoe; + struct fcoe_port *port; /* Setup lport private data to point to fcoe softc */ - fc = lport_priv(lp); - fc->ctlr.lp = lp; - fc->real_dev = netdev; - fc->phys_dev = netdev; - - /* Require support for get_pauseparam ethtool op. */ - if (netdev->priv_flags & IFF_802_1Q_VLAN) - fc->phys_dev = vlan_dev_real_dev(netdev); - - /* Do not support for bonding device */ - if ((fc->real_dev->priv_flags & IFF_MASTER_ALB) || - (fc->real_dev->priv_flags & IFF_SLAVE_INACTIVE) || - (fc->real_dev->priv_flags & IFF_MASTER_8023AD)) { - return -EOPNOTSUPP; - } + port = lport_priv(lp); + fcoe = port->fcoe; /* * Determine max frame size based on underlying device and optional * user-configured limit. If the MFS is too low, fcoe_link_ok() * will return 0, so do this first. */ - mfs = fc->real_dev->mtu - (sizeof(struct fcoe_hdr) + - sizeof(struct fcoe_crc_eof)); + mfs = netdev->mtu - (sizeof(struct fcoe_hdr) + + sizeof(struct fcoe_crc_eof)); if (fc_set_mfs(lp, mfs)) return -EINVAL; /* offload features support */ - if (fc->real_dev->features & NETIF_F_SG) + if (netdev->features & NETIF_F_SG) lp->sg_supp = 1; -#ifdef NETIF_F_FCOE_CRC if (netdev->features & NETIF_F_FCOE_CRC) { lp->crc_offload = 1; FCOE_NETDEV_DBG(netdev, "Supports FCCRC offload\n"); } -#endif -#ifdef NETIF_F_FSO if (netdev->features & NETIF_F_FSO) { lp->seq_offload = 1; lp->lso_max = netdev->gso_max_size; FCOE_NETDEV_DBG(netdev, "Supports LSO for max len 0x%x\n", lp->lso_max); } -#endif if (netdev->fcoe_ddp_xid) { lp->lro_enabled = 1; lp->lro_xid = netdev->fcoe_ddp_xid; FCOE_NETDEV_DBG(netdev, "Supports LRO for max xid 0x%x\n", lp->lro_xid); } - skb_queue_head_init(&fc->fcoe_pending_queue); - fc->fcoe_pending_queue_active = 0; - setup_timer(&fc->timer, fcoe_queue_timer, (unsigned long)lp); - - /* look for SAN MAC address, if multiple SAN MACs exist, only - * use the first one for SPMA */ - rcu_read_lock(); - for_each_dev_addr(netdev, ha) { - if ((ha->type == NETDEV_HW_ADDR_T_SAN) && - (is_valid_ether_addr(fc->ctlr.ctl_src_addr))) { - memcpy(fc->ctlr.ctl_src_addr, ha->addr, ETH_ALEN); - fc->ctlr.spma = 1; - break; - } - } - rcu_read_unlock(); - - /* setup Source Mac Address */ - if (!fc->ctlr.spma) - memcpy(fc->ctlr.ctl_src_addr, fc->real_dev->dev_addr, - fc->real_dev->addr_len); + skb_queue_head_init(&port->fcoe_pending_queue); + port->fcoe_pending_queue_active = 0; + setup_timer(&port->timer, fcoe_queue_timer, (unsigned long)lp); - wwnn = fcoe_wwn_from_mac(fc->real_dev->dev_addr, 1, 0); + wwnn = fcoe_wwn_from_mac(netdev->dev_addr, 1, 0); fc_set_wwnn(lp, wwnn); /* XXX - 3rd arg needs to be vlan id */ - wwpn = fcoe_wwn_from_mac(fc->real_dev->dev_addr, 2, 0); + wwpn = fcoe_wwn_from_mac(netdev->dev_addr, 2, 0); fc_set_wwpn(lp, wwpn); - /* - * Add FCoE MAC address as second unicast MAC address - * or enter promiscuous mode if not capable of listening - * for multiple unicast MACs. - */ - rtnl_lock(); - memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); - dev_unicast_add(fc->real_dev, flogi_maddr); - if (fc->ctlr.spma) - dev_unicast_add(fc->real_dev, fc->ctlr.ctl_src_addr); - dev_mc_add(fc->real_dev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0); - rtnl_unlock(); - - /* - * setup the receive function from ethernet driver - * on the ethertype for the given device - */ - fc->fcoe_packet_type.func = fcoe_rcv; - fc->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); - fc->fcoe_packet_type.dev = fc->real_dev; - dev_add_pack(&fc->fcoe_packet_type); - - fc->fip_packet_type.func = fcoe_fip_recv; - fc->fip_packet_type.type = htons(ETH_P_FIP); - fc->fip_packet_type.dev = fc->real_dev; - dev_add_pack(&fc->fip_packet_type); - return 0; } @@ -415,86 +514,140 @@ static int fcoe_shost_config(struct fc_lport *lp, struct Scsi_Host *shost, return 0; } +/* + * fcoe_oem_match() - match for read types IO + * @fp: the fc_frame for new IO. + * + * Returns : true for read types IO, otherwise returns false. + */ +bool fcoe_oem_match(struct fc_frame *fp) +{ + return fc_fcp_is_read(fr_fsp(fp)) && + (fr_fsp(fp)->data_len > fcoe_ddp_min); +} + /** * fcoe_em_config() - allocates em for this lport - * @lp: the port that em is to allocated for + * @lp: the fcoe that em is to allocated for * * Returns : 0 on success */ static inline int fcoe_em_config(struct fc_lport *lp) { - BUG_ON(lp->emp); + struct fcoe_port *port = lport_priv(lp); + struct fcoe_interface *fcoe = port->fcoe; + struct fcoe_interface *oldfcoe = NULL; + struct net_device *old_real_dev, *cur_real_dev; + u16 min_xid = FCOE_MIN_XID; + u16 max_xid = FCOE_MAX_XID; - lp->emp = fc_exch_mgr_alloc(lp, FC_CLASS_3, - FCOE_MIN_XID, FCOE_MAX_XID); - if (!lp->emp) + /* + * Check if need to allocate an em instance for + * offload exchange ids to be shared across all VN_PORTs/lport. + */ + if (!lp->lro_enabled || !lp->lro_xid || (lp->lro_xid >= max_xid)) { + lp->lro_xid = 0; + goto skip_oem; + } + + /* + * Reuse existing offload em instance in case + * it is already allocated on real eth device + */ + if (fcoe->netdev->priv_flags & IFF_802_1Q_VLAN) + cur_real_dev = vlan_dev_real_dev(fcoe->netdev); + else + cur_real_dev = fcoe->netdev; + + list_for_each_entry(oldfcoe, &fcoe_hostlist, list) { + if (oldfcoe->netdev->priv_flags & IFF_802_1Q_VLAN) + old_real_dev = vlan_dev_real_dev(oldfcoe->netdev); + else + old_real_dev = oldfcoe->netdev; + + if (cur_real_dev == old_real_dev) { + fcoe->oem = oldfcoe->oem; + break; + } + } + + if (fcoe->oem) { + if (!fc_exch_mgr_add(lp, fcoe->oem, fcoe_oem_match)) { + printk(KERN_ERR "fcoe_em_config: failed to add " + "offload em:%p on interface:%s\n", + fcoe->oem, fcoe->netdev->name); + return -ENOMEM; + } + } else { + fcoe->oem = fc_exch_mgr_alloc(lp, FC_CLASS_3, + FCOE_MIN_XID, lp->lro_xid, + fcoe_oem_match); + if (!fcoe->oem) { + printk(KERN_ERR "fcoe_em_config: failed to allocate " + "em for offload exches on interface:%s\n", + fcoe->netdev->name); + return -ENOMEM; + } + } + + /* + * Exclude offload EM xid range from next EM xid range. + */ + min_xid += lp->lro_xid + 1; + +skip_oem: + if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, min_xid, max_xid, NULL)) { + printk(KERN_ERR "fcoe_em_config: failed to " + "allocate em on interface %s\n", fcoe->netdev->name); return -ENOMEM; + } return 0; } /** * fcoe_if_destroy() - FCoE software HBA tear-down function - * @netdev: ptr to the associated net_device - * - * Returns: 0 if link is OK for use by FCoE. + * @lport: fc_lport to destroy */ -static int fcoe_if_destroy(struct net_device *netdev) +static void fcoe_if_destroy(struct fc_lport *lport) { - struct fc_lport *lp = NULL; - struct fcoe_softc *fc; - - BUG_ON(!netdev); + struct fcoe_port *port = lport_priv(lport); + struct fcoe_interface *fcoe = port->fcoe; + struct net_device *netdev = fcoe->netdev; FCOE_NETDEV_DBG(netdev, "Destroying interface\n"); - lp = fcoe_hostlist_lookup(netdev); - if (!lp) - return -ENODEV; - - fc = lport_priv(lp); - /* Logout of the fabric */ - fc_fabric_logoff(lp); + fc_fabric_logoff(lport); - /* Remove the instance from fcoe's list */ - fcoe_hostlist_remove(lp); + /* Cleanup the fc_lport */ + fc_lport_destroy(lport); + fc_fcp_destroy(lport); - /* clean up netdev configurations */ - fcoe_netdev_cleanup(fc); + /* Stop the transmit retry timer */ + del_timer_sync(&port->timer); - /* tear-down the FCoE controller */ - fcoe_ctlr_destroy(&fc->ctlr); + /* Free existing transmit skbs */ + fcoe_clean_pending_queue(lport); - /* Cleanup the fc_lport */ - fc_lport_destroy(lp); - fc_fcp_destroy(lp); + /* receives may not be stopped until after this */ + fcoe_interface_put(fcoe); + + /* Free queued packets for the per-CPU receive threads */ + fcoe_percpu_clean(lport); /* Detach from the scsi-ml */ - fc_remove_host(lp->host); - scsi_remove_host(lp->host); + fc_remove_host(lport->host); + scsi_remove_host(lport->host); /* There are no more rports or I/O, free the EM */ - if (lp->emp) - fc_exch_mgr_free(lp->emp); - - /* Free the per-CPU receive threads */ - fcoe_percpu_clean(lp); - - /* Free existing skbs */ - fcoe_clean_pending_queue(lp); - - /* Stop the timer */ - del_timer_sync(&fc->timer); + fc_exch_mgr_free(lport); /* Free memory used by statistical counters */ - fc_lport_free_stats(lp); - - /* Release the net_device and Scsi_Host */ - dev_put(fc->real_dev); - scsi_host_put(lp->host); + fc_lport_free_stats(lport); - return 0; + /* Release the Scsi_Host */ + scsi_host_put(lport->host); } /* @@ -540,106 +693,96 @@ static struct libfc_function_template fcoe_libfc_fcn_templ = { }; /** - * fcoe_if_create() - this function creates the fcoe interface - * @netdev: pointer the associated netdevice + * fcoe_if_create() - this function creates the fcoe port + * @fcoe: fcoe_interface structure to create an fc_lport instance on + * @parent: device pointer to be the parent in sysfs for the SCSI host * - * Creates fc_lport struct and scsi_host for lport, configures lport - * and starts fabric login. + * Creates fc_lport struct and scsi_host for lport, configures lport. * - * Returns : 0 on success + * Returns : The allocated fc_lport or an error pointer */ -static int fcoe_if_create(struct net_device *netdev) +static struct fc_lport *fcoe_if_create(struct fcoe_interface *fcoe, + struct device *parent) { int rc; - struct fc_lport *lp = NULL; - struct fcoe_softc *fc; + struct fc_lport *lport = NULL; + struct fcoe_port *port; struct Scsi_Host *shost; - - BUG_ON(!netdev); + struct net_device *netdev = fcoe->netdev; FCOE_NETDEV_DBG(netdev, "Create Interface\n"); - lp = fcoe_hostlist_lookup(netdev); - if (lp) - return -EEXIST; - shost = libfc_host_alloc(&fcoe_shost_template, - sizeof(struct fcoe_softc)); + sizeof(struct fcoe_port)); if (!shost) { FCOE_NETDEV_DBG(netdev, "Could not allocate host structure\n"); - return -ENOMEM; + rc = -ENOMEM; + goto out; } - lp = shost_priv(shost); - fc = lport_priv(lp); + lport = shost_priv(shost); + port = lport_priv(lport); + port->lport = lport; + port->fcoe = fcoe; + INIT_WORK(&port->destroy_work, fcoe_destroy_work); /* configure fc_lport, e.g., em */ - rc = fcoe_lport_config(lp); + rc = fcoe_lport_config(lport); if (rc) { FCOE_NETDEV_DBG(netdev, "Could not configure lport for the " "interface\n"); goto out_host_put; } - /* - * Initialize FIP. - */ - fcoe_ctlr_init(&fc->ctlr); - fc->ctlr.send = fcoe_fip_send; - fc->ctlr.update_mac = fcoe_update_src_mac; - /* configure lport network properties */ - rc = fcoe_netdev_config(lp, netdev); + rc = fcoe_netdev_config(lport, netdev); if (rc) { FCOE_NETDEV_DBG(netdev, "Could not configure netdev for the " "interface\n"); - goto out_netdev_cleanup; + goto out_lp_destroy; } /* configure lport scsi host properties */ - rc = fcoe_shost_config(lp, shost, &netdev->dev); + rc = fcoe_shost_config(lport, shost, parent); if (rc) { FCOE_NETDEV_DBG(netdev, "Could not configure shost for the " "interface\n"); - goto out_netdev_cleanup; - } - - /* lport exch manager allocation */ - rc = fcoe_em_config(lp); - if (rc) { - FCOE_NETDEV_DBG(netdev, "Could not configure the EM for the " - "interface\n"); - goto out_netdev_cleanup; + goto out_lp_destroy; } /* Initialize the library */ - rc = fcoe_libfc_config(lp, &fcoe_libfc_fcn_templ); + rc = fcoe_libfc_config(lport, &fcoe_libfc_fcn_templ); if (rc) { FCOE_NETDEV_DBG(netdev, "Could not configure libfc for the " "interface\n"); goto out_lp_destroy; } - /* add to lports list */ - fcoe_hostlist_add(lp); - - lp->boot_time = jiffies; - - fc_fabric_login(lp); - - if (!fcoe_link_ok(lp)) - fcoe_ctlr_link_up(&fc->ctlr); + /* + * fcoe_em_alloc() and fcoe_hostlist_add() both + * need to be atomic with respect to other changes to the hostlist + * since fcoe_em_alloc() looks for an existing EM + * instance on host list updated by fcoe_hostlist_add(). + * + * This is currently handled through the fcoe_config_mutex begin held. + */ - dev_hold(netdev); + /* lport exch manager allocation */ + rc = fcoe_em_config(lport); + if (rc) { + FCOE_NETDEV_DBG(netdev, "Could not configure the EM for the " + "interface\n"); + goto out_lp_destroy; + } - return rc; + fcoe_interface_get(fcoe); + return lport; out_lp_destroy: - fc_exch_mgr_free(lp->emp); /* Free the EM */ -out_netdev_cleanup: - fcoe_netdev_cleanup(fc); + fc_exch_mgr_free(lport); out_host_put: - scsi_host_put(lp->host); - return rc; + scsi_host_put(lport->host); +out: + return ERR_PTR(rc); } /** @@ -669,6 +812,7 @@ static int __init fcoe_if_init(void) int __exit fcoe_if_exit(void) { fc_release_transport(scsi_transport_fcoe_sw); + scsi_transport_fcoe_sw = NULL; return 0; } @@ -686,7 +830,7 @@ static void fcoe_percpu_thread_create(unsigned int cpu) thread = kthread_create(fcoe_percpu_receive_thread, (void *)p, "fcoethread/%d", cpu); - if (likely(!IS_ERR(p->thread))) { + if (likely(!IS_ERR(thread))) { kthread_bind(thread, cpu); wake_up_process(thread); @@ -838,14 +982,13 @@ int fcoe_rcv(struct sk_buff *skb, struct net_device *dev, { struct fc_lport *lp; struct fcoe_rcv_info *fr; - struct fcoe_softc *fc; + struct fcoe_interface *fcoe; struct fc_frame_header *fh; struct fcoe_percpu_s *fps; - unsigned short oxid; - unsigned int cpu = 0; + unsigned int cpu; - fc = container_of(ptype, struct fcoe_softc, fcoe_packet_type); - lp = fc->ctlr.lp; + fcoe = container_of(ptype, struct fcoe_interface, fcoe_packet_type); + lp = fcoe->ctlr.lp; if (unlikely(lp == NULL)) { FCOE_NETDEV_DBG(dev, "Cannot find hba structure"); goto err2; @@ -876,20 +1019,20 @@ int fcoe_rcv(struct sk_buff *skb, struct net_device *dev, skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); fh = (struct fc_frame_header *) skb_transport_header(skb); - oxid = ntohs(fh->fh_ox_id); - fr = fcoe_dev_from_skb(skb); fr->fr_dev = lp; fr->ptype = ptype; -#ifdef CONFIG_SMP /* - * The incoming frame exchange id(oxid) is ANDed with num of online - * cpu bits to get cpu and then this cpu is used for selecting - * a per cpu kernel thread from fcoe_percpu. + * In case the incoming frame's exchange is originated from + * the initiator, then received frame's exchange id is ANDed + * with fc_cpu_mask bits to get the same cpu on which exchange + * was originated, otherwise just use the current cpu. */ - cpu = oxid & (num_online_cpus() - 1); -#endif + if (ntoh24(fh->fh_f_ctl) & FC_FC_EX_CTX) + cpu = ntohs(fh->fh_ox_id) & fc_cpu_mask; + else + cpu = smp_processor_id(); fps = &per_cpu(fcoe_percpu, cpu); spin_lock_bh(&fps->fcoe_rx_list.lock); @@ -996,7 +1139,7 @@ static int fcoe_get_paged_crc_eof(struct sk_buff *skb, int tlen) * fcoe_fc_crc() - calculates FC CRC in this fcoe skb * @fp: the fc_frame containing data to be checksummed * - * This uses crc32() to calculate the crc for fc frame + * This uses crc32() to calculate the crc for port frame * Return : 32 bit crc */ u32 fcoe_fc_crc(struct fc_frame *fp) @@ -1029,7 +1172,7 @@ u32 fcoe_fc_crc(struct fc_frame *fp) /** * fcoe_xmit() - FCoE frame transmit function - * @lp: the associated local port + * @lp: the associated local fcoe * @fp: the fc_frame to be transmitted * * Return : 0 for success @@ -1046,13 +1189,13 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp) unsigned int hlen; /* header length implies the version */ unsigned int tlen; /* trailer length */ unsigned int elen; /* eth header, may include vlan */ - struct fcoe_softc *fc; + struct fcoe_port *port = lport_priv(lp); + struct fcoe_interface *fcoe = port->fcoe; u8 sof, eof; struct fcoe_hdr *hp; WARN_ON((fr_len(fp) % sizeof(u32)) != 0); - fc = lport_priv(lp); fh = fc_frame_header_get(fp); skb = fp_skb(fp); wlen = skb->len / FCOE_WORD_TO_BYTE; @@ -1063,7 +1206,7 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp) } if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ) && - fcoe_ctlr_els_send(&fc->ctlr, skb)) + fcoe_ctlr_els_send(&fcoe->ctlr, skb)) return 0; sof = fr_sof(fp); @@ -1085,7 +1228,7 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp) crc = fcoe_fc_crc(fp); } - /* copy fc crc and eof to the skb buff */ + /* copy port crc and eof to the skb buff */ if (skb_is_nonlinear(skb)) { skb_frag_t *frag; if (fcoe_get_paged_crc_eof(skb, tlen)) { @@ -1108,27 +1251,27 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp) cp = NULL; } - /* adjust skb network/transport offsets to match mac/fcoe/fc */ + /* adjust skb network/transport offsets to match mac/fcoe/port */ skb_push(skb, elen + hlen); skb_reset_mac_header(skb); skb_reset_network_header(skb); skb->mac_len = elen; skb->protocol = htons(ETH_P_FCOE); - skb->dev = fc->real_dev; + skb->dev = fcoe->netdev; /* fill up mac and fcoe headers */ eh = eth_hdr(skb); eh->h_proto = htons(ETH_P_FCOE); - if (fc->ctlr.map_dest) + if (fcoe->ctlr.map_dest) fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); else /* insert GW address */ - memcpy(eh->h_dest, fc->ctlr.dest_addr, ETH_ALEN); + memcpy(eh->h_dest, fcoe->ctlr.dest_addr, ETH_ALEN); - if (unlikely(fc->ctlr.flogi_oxid != FC_XID_UNKNOWN)) - memcpy(eh->h_source, fc->ctlr.ctl_src_addr, ETH_ALEN); + if (unlikely(fcoe->ctlr.flogi_oxid != FC_XID_UNKNOWN)) + memcpy(eh->h_source, fcoe->ctlr.ctl_src_addr, ETH_ALEN); else - memcpy(eh->h_source, fc->ctlr.data_src_addr, ETH_ALEN); + memcpy(eh->h_source, fcoe->ctlr.data_src_addr, ETH_ALEN); hp = (struct fcoe_hdr *)(eh + 1); memset(hp, 0, sizeof(*hp)); @@ -1136,7 +1279,6 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp) FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); hp->fcoe_sof = sof; -#ifdef NETIF_F_FSO /* fcoe lso, mss is in max_payload which is non-zero for FCP data */ if (lp->seq_offload && fr_max_payload(fp)) { skb_shinfo(skb)->gso_type = SKB_GSO_FCOE; @@ -1145,7 +1287,6 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp) skb_shinfo(skb)->gso_type = 0; skb_shinfo(skb)->gso_size = 0; } -#endif /* update tx stats: regardless if LLD fails */ stats = fc_lport_get_stats(lp); stats->TxFrames++; @@ -1153,7 +1294,7 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp) /* send down to lld */ fr_dev(fp) = lp; - if (fc->fcoe_pending_queue.qlen) + if (port->fcoe_pending_queue.qlen) fcoe_check_wait_queue(lp, skb); else if (fcoe_start_io(skb)) fcoe_check_wait_queue(lp, skb); @@ -1162,6 +1303,15 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp) } /** + * fcoe_percpu_flush_done() - Indicate percpu queue flush completion. + * @skb: the skb being completed. + */ +static void fcoe_percpu_flush_done(struct sk_buff *skb) +{ + complete(&fcoe_flush_completion); +} + +/** * fcoe_percpu_receive_thread() - recv thread per cpu * @arg: ptr to the fcoe per cpu struct * @@ -1179,7 +1329,7 @@ int fcoe_percpu_receive_thread(void *arg) struct fcoe_crc_eof crc_eof; struct fc_frame *fp; u8 *mac = NULL; - struct fcoe_softc *fc; + struct fcoe_port *port; struct fcoe_hdr *hp; set_user_nice(current, -20); @@ -1200,7 +1350,8 @@ int fcoe_percpu_receive_thread(void *arg) fr = fcoe_dev_from_skb(skb); lp = fr->fr_dev; if (unlikely(lp == NULL)) { - FCOE_NETDEV_DBG(skb->dev, "Invalid HBA Structure"); + if (skb->destructor != fcoe_percpu_flush_done) + FCOE_NETDEV_DBG(skb->dev, "NULL lport in skb"); kfree_skb(skb); continue; } @@ -1215,7 +1366,7 @@ int fcoe_percpu_receive_thread(void *arg) /* * Save source MAC address before discarding header. */ - fc = lport_priv(lp); + port = lport_priv(lp); if (skb_is_nonlinear(skb)) skb_linearize(skb); /* not ideal */ mac = eth_hdr(skb)->h_source; @@ -1277,7 +1428,7 @@ int fcoe_percpu_receive_thread(void *arg) fh = fc_frame_header_get(fp); if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && fh->fh_type == FC_TYPE_FCP) { - fc_exch_recv(lp, lp->emp, fp); + fc_exch_recv(lp, fp); continue; } if (fr_flags(fp) & FCPHF_CRC_UNCHECKED) { @@ -1293,12 +1444,12 @@ int fcoe_percpu_receive_thread(void *arg) } fr_flags(fp) &= ~FCPHF_CRC_UNCHECKED; } - if (unlikely(fc->ctlr.flogi_oxid != FC_XID_UNKNOWN) && - fcoe_ctlr_recv_flogi(&fc->ctlr, fp, mac)) { + if (unlikely(port->fcoe->ctlr.flogi_oxid != FC_XID_UNKNOWN) && + fcoe_ctlr_recv_flogi(&port->fcoe->ctlr, fp, mac)) { fc_frame_free(fp); continue; } - fc_exch_recv(lp, lp->emp, fp); + fc_exch_recv(lp, fp); } return 0; } @@ -1318,46 +1469,46 @@ int fcoe_percpu_receive_thread(void *arg) */ static void fcoe_check_wait_queue(struct fc_lport *lp, struct sk_buff *skb) { - struct fcoe_softc *fc = lport_priv(lp); + struct fcoe_port *port = lport_priv(lp); int rc; - spin_lock_bh(&fc->fcoe_pending_queue.lock); + spin_lock_bh(&port->fcoe_pending_queue.lock); if (skb) - __skb_queue_tail(&fc->fcoe_pending_queue, skb); + __skb_queue_tail(&port->fcoe_pending_queue, skb); - if (fc->fcoe_pending_queue_active) + if (port->fcoe_pending_queue_active) goto out; - fc->fcoe_pending_queue_active = 1; + port->fcoe_pending_queue_active = 1; - while (fc->fcoe_pending_queue.qlen) { + while (port->fcoe_pending_queue.qlen) { /* keep qlen > 0 until fcoe_start_io succeeds */ - fc->fcoe_pending_queue.qlen++; - skb = __skb_dequeue(&fc->fcoe_pending_queue); + port->fcoe_pending_queue.qlen++; + skb = __skb_dequeue(&port->fcoe_pending_queue); - spin_unlock_bh(&fc->fcoe_pending_queue.lock); + spin_unlock_bh(&port->fcoe_pending_queue.lock); rc = fcoe_start_io(skb); - spin_lock_bh(&fc->fcoe_pending_queue.lock); + spin_lock_bh(&port->fcoe_pending_queue.lock); if (rc) { - __skb_queue_head(&fc->fcoe_pending_queue, skb); + __skb_queue_head(&port->fcoe_pending_queue, skb); /* undo temporary increment above */ - fc->fcoe_pending_queue.qlen--; + port->fcoe_pending_queue.qlen--; break; } /* undo temporary increment above */ - fc->fcoe_pending_queue.qlen--; + port->fcoe_pending_queue.qlen--; } - if (fc->fcoe_pending_queue.qlen < FCOE_LOW_QUEUE_DEPTH) + if (port->fcoe_pending_queue.qlen < FCOE_LOW_QUEUE_DEPTH) lp->qfull = 0; - if (fc->fcoe_pending_queue.qlen && !timer_pending(&fc->timer)) - mod_timer(&fc->timer, jiffies + 2); - fc->fcoe_pending_queue_active = 0; + if (port->fcoe_pending_queue.qlen && !timer_pending(&port->timer)) + mod_timer(&port->timer, jiffies + 2); + port->fcoe_pending_queue_active = 0; out: - if (fc->fcoe_pending_queue.qlen > FCOE_MAX_QUEUE_DEPTH) + if (port->fcoe_pending_queue.qlen > FCOE_MAX_QUEUE_DEPTH) lp->qfull = 1; - spin_unlock_bh(&fc->fcoe_pending_queue.lock); + spin_unlock_bh(&port->fcoe_pending_queue.lock); return; } @@ -1391,21 +1542,20 @@ static int fcoe_device_notification(struct notifier_block *notifier, ulong event, void *ptr) { struct fc_lport *lp = NULL; - struct net_device *real_dev = ptr; - struct fcoe_softc *fc; + struct net_device *netdev = ptr; + struct fcoe_interface *fcoe; + struct fcoe_port *port; struct fcoe_dev_stats *stats; u32 link_possible = 1; u32 mfs; int rc = NOTIFY_OK; - read_lock(&fcoe_hostlist_lock); - list_for_each_entry(fc, &fcoe_hostlist, list) { - if (fc->real_dev == real_dev) { - lp = fc->ctlr.lp; + list_for_each_entry(fcoe, &fcoe_hostlist, list) { + if (fcoe->netdev == netdev) { + lp = fcoe->ctlr.lp; break; } } - read_unlock(&fcoe_hostlist_lock); if (lp == NULL) { rc = NOTIFY_DONE; goto out; @@ -1420,21 +1570,27 @@ static int fcoe_device_notification(struct notifier_block *notifier, case NETDEV_CHANGE: break; case NETDEV_CHANGEMTU: - mfs = fc->real_dev->mtu - - (sizeof(struct fcoe_hdr) + - sizeof(struct fcoe_crc_eof)); + mfs = netdev->mtu - (sizeof(struct fcoe_hdr) + + sizeof(struct fcoe_crc_eof)); if (mfs >= FC_MIN_MAX_FRAME) fc_set_mfs(lp, mfs); break; case NETDEV_REGISTER: break; + case NETDEV_UNREGISTER: + list_del(&fcoe->list); + port = lport_priv(fcoe->ctlr.lp); + fcoe_interface_cleanup(fcoe); + schedule_work(&port->destroy_work); + goto out; + break; default: - FCOE_NETDEV_DBG(real_dev, "Unknown event %ld " + FCOE_NETDEV_DBG(netdev, "Unknown event %ld " "from netdev netlink\n", event); } if (link_possible && !fcoe_link_ok(lp)) - fcoe_ctlr_link_up(&fc->ctlr); - else if (fcoe_ctlr_link_down(&fc->ctlr)) { + fcoe_ctlr_link_up(&fcoe->ctlr); + else if (fcoe_ctlr_link_down(&fcoe->ctlr)) { stats = fc_lport_get_stats(lp); stats->LinkFailureCount++; fcoe_clean_pending_queue(lp); @@ -1465,75 +1621,6 @@ static struct net_device *fcoe_if_to_netdev(const char *buffer) } /** - * fcoe_netdev_to_module_owner() - finds out the driver module of the netdev - * @netdev: the target netdev - * - * Returns: ptr to the struct module, NULL for failure - */ -static struct module * -fcoe_netdev_to_module_owner(const struct net_device *netdev) -{ - struct device *dev; - - if (!netdev) - return NULL; - - dev = netdev->dev.parent; - if (!dev) - return NULL; - - if (!dev->driver) - return NULL; - - return dev->driver->owner; -} - -/** - * fcoe_ethdrv_get() - Hold the Ethernet driver - * @netdev: the target netdev - * - * Holds the Ethernet driver module by try_module_get() for - * the corresponding netdev. - * - * Returns: 0 for success - */ -static int fcoe_ethdrv_get(const struct net_device *netdev) -{ - struct module *owner; - - owner = fcoe_netdev_to_module_owner(netdev); - if (owner) { - FCOE_NETDEV_DBG(netdev, "Hold driver module %s\n", - module_name(owner)); - return try_module_get(owner); - } - return -ENODEV; -} - -/** - * fcoe_ethdrv_put() - Release the Ethernet driver - * @netdev: the target netdev - * - * Releases the Ethernet driver module by module_put for - * the corresponding netdev. - * - * Returns: 0 for success - */ -static int fcoe_ethdrv_put(const struct net_device *netdev) -{ - struct module *owner; - - owner = fcoe_netdev_to_module_owner(netdev); - if (owner) { - FCOE_NETDEV_DBG(netdev, "Release driver module %s\n", - module_name(owner)); - module_put(owner); - return 0; - } - return -ENODEV; -} - -/** * fcoe_destroy() - handles the destroy from sysfs * @buffer: expected to be an eth if name * @kp: associated kernel param @@ -1542,34 +1629,57 @@ static int fcoe_ethdrv_put(const struct net_device *netdev) */ static int fcoe_destroy(const char *buffer, struct kernel_param *kp) { - int rc; + struct fcoe_interface *fcoe; struct net_device *netdev; + int rc; + + mutex_lock(&fcoe_config_mutex); +#ifdef CONFIG_FCOE_MODULE + /* + * Make sure the module has been initialized, and is not about to be + * removed. Module paramter sysfs files are writable before the + * module_init function is called and after module_exit. + */ + if (THIS_MODULE->state != MODULE_STATE_LIVE) { + rc = -ENODEV; + goto out_nodev; + } +#endif netdev = fcoe_if_to_netdev(buffer); if (!netdev) { rc = -ENODEV; goto out_nodev; } - /* look for existing lport */ - if (!fcoe_hostlist_lookup(netdev)) { + + rtnl_lock(); + fcoe = fcoe_hostlist_lookup_port(netdev); + if (!fcoe) { + rtnl_unlock(); rc = -ENODEV; goto out_putdev; } - rc = fcoe_if_destroy(netdev); - if (rc) { - printk(KERN_ERR "fcoe: Failed to destroy interface (%s)\n", - netdev->name); - rc = -EIO; - goto out_putdev; - } - fcoe_ethdrv_put(netdev); - rc = 0; + list_del(&fcoe->list); + fcoe_interface_cleanup(fcoe); + rtnl_unlock(); + fcoe_if_destroy(fcoe->ctlr.lp); out_putdev: dev_put(netdev); out_nodev: + mutex_unlock(&fcoe_config_mutex); return rc; } +static void fcoe_destroy_work(struct work_struct *work) +{ + struct fcoe_port *port; + + port = container_of(work, struct fcoe_port, destroy_work); + mutex_lock(&fcoe_config_mutex); + fcoe_if_destroy(port->lport); + mutex_unlock(&fcoe_config_mutex); +} + /** * fcoe_create() - Handles the create call from sysfs * @buffer: expected to be an eth if name @@ -1580,41 +1690,84 @@ out_nodev: static int fcoe_create(const char *buffer, struct kernel_param *kp) { int rc; + struct fcoe_interface *fcoe; + struct fc_lport *lport; struct net_device *netdev; + mutex_lock(&fcoe_config_mutex); +#ifdef CONFIG_FCOE_MODULE + /* + * Make sure the module has been initialized, and is not about to be + * removed. Module paramter sysfs files are writable before the + * module_init function is called and after module_exit. + */ + if (THIS_MODULE->state != MODULE_STATE_LIVE) { + rc = -ENODEV; + goto out_nodev; + } +#endif + + rtnl_lock(); netdev = fcoe_if_to_netdev(buffer); if (!netdev) { rc = -ENODEV; goto out_nodev; } + /* look for existing lport */ if (fcoe_hostlist_lookup(netdev)) { rc = -EEXIST; goto out_putdev; } - fcoe_ethdrv_get(netdev); - rc = fcoe_if_create(netdev); - if (rc) { + fcoe = fcoe_interface_create(netdev); + if (!fcoe) { + rc = -ENOMEM; + goto out_putdev; + } + + lport = fcoe_if_create(fcoe, &netdev->dev); + if (IS_ERR(lport)) { printk(KERN_ERR "fcoe: Failed to create interface (%s)\n", netdev->name); - fcoe_ethdrv_put(netdev); rc = -EIO; - goto out_putdev; + fcoe_interface_cleanup(fcoe); + goto out_free; } + + /* Make this the "master" N_Port */ + fcoe->ctlr.lp = lport; + + /* add to lports list */ + fcoe_hostlist_add(lport); + + /* start FIP Discovery and FLOGI */ + lport->boot_time = jiffies; + fc_fabric_login(lport); + if (!fcoe_link_ok(lport)) + fcoe_ctlr_link_up(&fcoe->ctlr); + rc = 0; +out_free: + /* + * Release from init in fcoe_interface_create(), on success lport + * should be holding a reference taken in fcoe_if_create(). + */ + fcoe_interface_put(fcoe); out_putdev: dev_put(netdev); out_nodev: + rtnl_unlock(); + mutex_unlock(&fcoe_config_mutex); return rc; } module_param_call(create, fcoe_create, NULL, NULL, S_IWUSR); __MODULE_PARM_TYPE(create, "string"); -MODULE_PARM_DESC(create, "Create fcoe port using net device passed in."); +MODULE_PARM_DESC(create, "Create fcoe fcoe using net device passed in."); module_param_call(destroy, fcoe_destroy, NULL, NULL, S_IWUSR); __MODULE_PARM_TYPE(destroy, "string"); -MODULE_PARM_DESC(destroy, "Destroy fcoe port"); +MODULE_PARM_DESC(destroy, "Destroy fcoe fcoe"); /** * fcoe_link_ok() - Check if link is ok for the fc_lport @@ -1632,37 +1785,40 @@ MODULE_PARM_DESC(destroy, "Destroy fcoe port"); */ int fcoe_link_ok(struct fc_lport *lp) { - struct fcoe_softc *fc = lport_priv(lp); - struct net_device *dev = fc->real_dev; + struct fcoe_port *port = lport_priv(lp); + struct net_device *dev = port->fcoe->netdev; struct ethtool_cmd ecmd = { ETHTOOL_GSET }; - int rc = 0; - if ((dev->flags & IFF_UP) && netif_carrier_ok(dev)) { - dev = fc->phys_dev; - if (dev->ethtool_ops->get_settings) { - dev->ethtool_ops->get_settings(dev, &ecmd); - lp->link_supported_speeds &= - ~(FC_PORTSPEED_1GBIT | FC_PORTSPEED_10GBIT); - if (ecmd.supported & (SUPPORTED_1000baseT_Half | - SUPPORTED_1000baseT_Full)) - lp->link_supported_speeds |= FC_PORTSPEED_1GBIT; - if (ecmd.supported & SUPPORTED_10000baseT_Full) - lp->link_supported_speeds |= - FC_PORTSPEED_10GBIT; - if (ecmd.speed == SPEED_1000) - lp->link_speed = FC_PORTSPEED_1GBIT; - if (ecmd.speed == SPEED_10000) - lp->link_speed = FC_PORTSPEED_10GBIT; - } - } else - rc = -1; + if ((dev->flags & IFF_UP) && netif_carrier_ok(dev) && + (!dev_ethtool_get_settings(dev, &ecmd))) { + lp->link_supported_speeds &= + ~(FC_PORTSPEED_1GBIT | FC_PORTSPEED_10GBIT); + if (ecmd.supported & (SUPPORTED_1000baseT_Half | + SUPPORTED_1000baseT_Full)) + lp->link_supported_speeds |= FC_PORTSPEED_1GBIT; + if (ecmd.supported & SUPPORTED_10000baseT_Full) + lp->link_supported_speeds |= + FC_PORTSPEED_10GBIT; + if (ecmd.speed == SPEED_1000) + lp->link_speed = FC_PORTSPEED_1GBIT; + if (ecmd.speed == SPEED_10000) + lp->link_speed = FC_PORTSPEED_10GBIT; - return rc; + return 0; + } + return -1; } /** * fcoe_percpu_clean() - Clear the pending skbs for an lport * @lp: the fc_lport + * + * Must be called with fcoe_create_mutex held to single-thread completion. + * + * This flushes the pending skbs by adding a new skb to each queue and + * waiting until they are all freed. This assures us that not only are + * there no packets that will be handled by the lport, but also that any + * threads already handling packet have returned. */ void fcoe_percpu_clean(struct fc_lport *lp) { @@ -1687,7 +1843,25 @@ void fcoe_percpu_clean(struct fc_lport *lp) kfree_skb(skb); } } + + if (!pp->thread || !cpu_online(cpu)) { + spin_unlock_bh(&pp->fcoe_rx_list.lock); + continue; + } + + skb = dev_alloc_skb(0); + if (!skb) { + spin_unlock_bh(&pp->fcoe_rx_list.lock); + continue; + } + skb->destructor = fcoe_percpu_flush_done; + + __skb_queue_tail(&pp->fcoe_rx_list, skb); + if (pp->fcoe_rx_list.qlen == 1) + wake_up_process(pp->thread); spin_unlock_bh(&pp->fcoe_rx_list.lock); + + wait_for_completion(&fcoe_flush_completion); } } @@ -1699,16 +1873,16 @@ void fcoe_percpu_clean(struct fc_lport *lp) */ void fcoe_clean_pending_queue(struct fc_lport *lp) { - struct fcoe_softc *fc = lport_priv(lp); + struct fcoe_port *port = lport_priv(lp); struct sk_buff *skb; - spin_lock_bh(&fc->fcoe_pending_queue.lock); - while ((skb = __skb_dequeue(&fc->fcoe_pending_queue)) != NULL) { - spin_unlock_bh(&fc->fcoe_pending_queue.lock); + spin_lock_bh(&port->fcoe_pending_queue.lock); + while ((skb = __skb_dequeue(&port->fcoe_pending_queue)) != NULL) { + spin_unlock_bh(&port->fcoe_pending_queue.lock); kfree_skb(skb); - spin_lock_bh(&fc->fcoe_pending_queue.lock); + spin_lock_bh(&port->fcoe_pending_queue.lock); } - spin_unlock_bh(&fc->fcoe_pending_queue.lock); + spin_unlock_bh(&port->fcoe_pending_queue.lock); } /** @@ -1725,24 +1899,21 @@ int fcoe_reset(struct Scsi_Host *shost) } /** - * fcoe_hostlist_lookup_softc() - find the corresponding lport by a given device + * fcoe_hostlist_lookup_port() - find the corresponding lport by a given device * @dev: this is currently ptr to net_device * - * Returns: NULL or the located fcoe_softc + * Returns: NULL or the located fcoe_port + * Locking: must be called with the RNL mutex held */ -static struct fcoe_softc * -fcoe_hostlist_lookup_softc(const struct net_device *dev) +static struct fcoe_interface * +fcoe_hostlist_lookup_port(const struct net_device *dev) { - struct fcoe_softc *fc; + struct fcoe_interface *fcoe; - read_lock(&fcoe_hostlist_lock); - list_for_each_entry(fc, &fcoe_hostlist, list) { - if (fc->real_dev == dev) { - read_unlock(&fcoe_hostlist_lock); - return fc; - } + list_for_each_entry(fcoe, &fcoe_hostlist, list) { + if (fcoe->netdev == dev) + return fcoe; } - read_unlock(&fcoe_hostlist_lock); return NULL; } @@ -1751,14 +1922,14 @@ fcoe_hostlist_lookup_softc(const struct net_device *dev) * @netdev: ptr to net_device * * Returns: 0 for success + * Locking: must be called with the RTNL mutex held */ -struct fc_lport *fcoe_hostlist_lookup(const struct net_device *netdev) +static struct fc_lport *fcoe_hostlist_lookup(const struct net_device *netdev) { - struct fcoe_softc *fc; - - fc = fcoe_hostlist_lookup_softc(netdev); + struct fcoe_interface *fcoe; - return (fc) ? fc->ctlr.lp : NULL; + fcoe = fcoe_hostlist_lookup_port(netdev); + return (fcoe) ? fcoe->ctlr.lp : NULL; } /** @@ -1766,41 +1937,23 @@ struct fc_lport *fcoe_hostlist_lookup(const struct net_device *netdev) * @lp: ptr to the fc_lport to be added * * Returns: 0 for success + * Locking: must be called with the RTNL mutex held */ -int fcoe_hostlist_add(const struct fc_lport *lp) +static int fcoe_hostlist_add(const struct fc_lport *lport) { - struct fcoe_softc *fc; - - fc = fcoe_hostlist_lookup_softc(fcoe_netdev(lp)); - if (!fc) { - fc = lport_priv(lp); - write_lock_bh(&fcoe_hostlist_lock); - list_add_tail(&fc->list, &fcoe_hostlist); - write_unlock_bh(&fcoe_hostlist_lock); + struct fcoe_interface *fcoe; + struct fcoe_port *port; + + fcoe = fcoe_hostlist_lookup_port(fcoe_netdev(lport)); + if (!fcoe) { + port = lport_priv(lport); + fcoe = port->fcoe; + list_add_tail(&fcoe->list, &fcoe_hostlist); } return 0; } /** - * fcoe_hostlist_remove() - remove a lport from lports list - * @lp: ptr to the fc_lport to be removed - * - * Returns: 0 for success - */ -int fcoe_hostlist_remove(const struct fc_lport *lp) -{ - struct fcoe_softc *fc; - - fc = fcoe_hostlist_lookup_softc(fcoe_netdev(lp)); - BUG_ON(!fc); - write_lock_bh(&fcoe_hostlist_lock); - list_del(&fc->list); - write_unlock_bh(&fcoe_hostlist_lock); - - return 0; -} - -/** * fcoe_init() - fcoe module loading initialization * * Returns 0 on success, negative on failure @@ -1811,8 +1964,7 @@ static int __init fcoe_init(void) int rc = 0; struct fcoe_percpu_s *p; - INIT_LIST_HEAD(&fcoe_hostlist); - rwlock_init(&fcoe_hostlist_lock); + mutex_lock(&fcoe_config_mutex); for_each_possible_cpu(cpu) { p = &per_cpu(fcoe_percpu, cpu); @@ -1830,15 +1982,18 @@ static int __init fcoe_init(void) /* Setup link change notification */ fcoe_dev_setup(); - fcoe_if_init(); + rc = fcoe_if_init(); + if (rc) + goto out_free; + mutex_unlock(&fcoe_config_mutex); return 0; out_free: for_each_online_cpu(cpu) { fcoe_percpu_thread_destroy(cpu); } - + mutex_unlock(&fcoe_config_mutex); return rc; } module_init(fcoe_init); @@ -1851,21 +2006,36 @@ module_init(fcoe_init); static void __exit fcoe_exit(void) { unsigned int cpu; - struct fcoe_softc *fc, *tmp; + struct fcoe_interface *fcoe, *tmp; + struct fcoe_port *port; + + mutex_lock(&fcoe_config_mutex); fcoe_dev_cleanup(); /* releases the associated fcoe hosts */ - list_for_each_entry_safe(fc, tmp, &fcoe_hostlist, list) - fcoe_if_destroy(fc->real_dev); + rtnl_lock(); + list_for_each_entry_safe(fcoe, tmp, &fcoe_hostlist, list) { + list_del(&fcoe->list); + port = lport_priv(fcoe->ctlr.lp); + fcoe_interface_cleanup(fcoe); + schedule_work(&port->destroy_work); + } + rtnl_unlock(); unregister_hotcpu_notifier(&fcoe_cpu_notifier); - for_each_online_cpu(cpu) { + for_each_online_cpu(cpu) fcoe_percpu_thread_destroy(cpu); - } - /* detach from scsi transport */ + mutex_unlock(&fcoe_config_mutex); + + /* flush any asyncronous interface destroys, + * this should happen after the netdev notifier is unregistered */ + flush_scheduled_work(); + + /* detach from scsi transport + * must happen after all destroys are done, therefor after the flush */ fcoe_if_exit(); } module_exit(fcoe_exit); diff --git a/drivers/scsi/fcoe/fcoe.h b/drivers/scsi/fcoe/fcoe.h index 0d724fa..ce7f60f 100644 --- a/drivers/scsi/fcoe/fcoe.h +++ b/drivers/scsi/fcoe/fcoe.h @@ -37,8 +37,8 @@ #define FCOE_MAX_OUTSTANDING_COMMANDS 1024 -#define FCOE_MIN_XID 0x0001 /* the min xid supported by fcoe_sw */ -#define FCOE_MAX_XID 0x07ef /* the max xid supported by fcoe_sw */ +#define FCOE_MIN_XID 0x0000 /* the min xid supported by fcoe_sw */ +#define FCOE_MAX_XID 0x0FFF /* the max xid supported by fcoe_sw */ unsigned int fcoe_debug_logging; module_param_named(debug_logging, fcoe_debug_logging, int, S_IRUGO|S_IWUSR); @@ -53,7 +53,7 @@ do { \ do { \ CMD; \ } while (0); \ -} while (0); +} while (0) #define FCOE_DBG(fmt, args...) \ FCOE_CHECK_LOGGING(FCOE_LOGGING, \ @@ -61,7 +61,7 @@ do { \ #define FCOE_NETDEV_DBG(netdev, fmt, args...) \ FCOE_CHECK_LOGGING(FCOE_NETDEV_LOGGING, \ - printk(KERN_INFO "fcoe: %s" fmt, \ + printk(KERN_INFO "fcoe: %s: " fmt, \ netdev->name, ##args);) /* @@ -75,26 +75,36 @@ struct fcoe_percpu_s { }; /* - * the fcoe sw transport private data + * an FCoE interface, 1:1 with netdev */ -struct fcoe_softc { +struct fcoe_interface { struct list_head list; - struct net_device *real_dev; - struct net_device *phys_dev; /* device with ethtool_ops */ + struct net_device *netdev; struct packet_type fcoe_packet_type; struct packet_type fip_packet_type; + struct fcoe_ctlr ctlr; + struct fc_exch_mgr *oem; /* offload exchange manager */ + struct kref kref; +}; + +/* + * the FCoE private structure that's allocated along with the + * Scsi_Host and libfc fc_lport structures + */ +struct fcoe_port { + struct fcoe_interface *fcoe; + struct fc_lport *lport; struct sk_buff_head fcoe_pending_queue; u8 fcoe_pending_queue_active; struct timer_list timer; /* queue timer */ - struct fcoe_ctlr ctlr; + struct work_struct destroy_work; /* to prevent rtnl deadlocks */ }; -#define fcoe_from_ctlr(fc) container_of(fc, struct fcoe_softc, ctlr) +#define fcoe_from_ctlr(fip) container_of(fip, struct fcoe_interface, ctlr) -static inline struct net_device *fcoe_netdev( - const struct fc_lport *lp) +static inline struct net_device *fcoe_netdev(const struct fc_lport *lp) { - return ((struct fcoe_softc *)lport_priv(lp))->real_dev; + return ((struct fcoe_port *)lport_priv(lp))->fcoe->netdev; } #endif /* _FCOE_H_ */ diff --git a/drivers/scsi/fcoe/libfcoe.c b/drivers/scsi/fcoe/libfcoe.c index f544340..62a4c20 100644 --- a/drivers/scsi/fcoe/libfcoe.c +++ b/drivers/scsi/fcoe/libfcoe.c @@ -69,7 +69,7 @@ do { \ do { \ CMD; \ } while (0); \ -} while (0); +} while (0) #define LIBFCOE_DBG(fmt, args...) \ LIBFCOE_CHECK_LOGGING(LIBFCOE_LOGGING, \ @@ -148,13 +148,17 @@ static void fcoe_ctlr_reset_fcfs(struct fcoe_ctlr *fip) */ void fcoe_ctlr_destroy(struct fcoe_ctlr *fip) { - flush_work(&fip->recv_work); + cancel_work_sync(&fip->recv_work); + spin_lock_bh(&fip->fip_recv_list.lock); + __skb_queue_purge(&fip->fip_recv_list); + spin_unlock_bh(&fip->fip_recv_list.lock); + spin_lock_bh(&fip->lock); fip->state = FIP_ST_DISABLED; fcoe_ctlr_reset_fcfs(fip); spin_unlock_bh(&fip->lock); del_timer_sync(&fip->timer); - flush_work(&fip->link_work); + cancel_work_sync(&fip->link_work); } EXPORT_SYMBOL(fcoe_ctlr_destroy); @@ -413,10 +417,18 @@ static int fcoe_ctlr_encaps(struct fcoe_ctlr *fip, struct fip_mac_desc *mac; struct fcoe_fcf *fcf; size_t dlen; + u16 fip_flags; fcf = fip->sel_fcf; if (!fcf) return -ENODEV; + + /* set flags according to both FCF and lport's capability on SPMA */ + fip_flags = fcf->flags; + fip_flags &= fip->spma ? FIP_FL_SPMA | FIP_FL_FPMA : FIP_FL_FPMA; + if (!fip_flags) + return -ENODEV; + dlen = sizeof(struct fip_encaps) + skb->len; /* len before push */ cap = (struct fip_encaps_head *)skb_push(skb, sizeof(*cap)); @@ -429,9 +441,7 @@ static int fcoe_ctlr_encaps(struct fcoe_ctlr *fip, cap->fip.fip_op = htons(FIP_OP_LS); cap->fip.fip_subcode = FIP_SC_REQ; cap->fip.fip_dl_len = htons((dlen + sizeof(*mac)) / FIP_BPW); - cap->fip.fip_flags = htons(FIP_FL_FPMA); - if (fip->spma) - cap->fip.fip_flags |= htons(FIP_FL_SPMA); + cap->fip.fip_flags = htons(fip_flags); cap->encaps.fd_desc.fip_dtype = dtype; cap->encaps.fd_desc.fip_dlen = dlen / FIP_BPW; @@ -879,7 +889,7 @@ static void fcoe_ctlr_recv_els(struct fcoe_ctlr *fip, struct sk_buff *skb) stats->RxFrames++; stats->RxWords += skb->len / FIP_BPW; - fc_exch_recv(lp, lp->emp, fp); + fc_exch_recv(lp, fp); return; len_err: @@ -1104,7 +1114,6 @@ static void fcoe_ctlr_timeout(unsigned long arg) struct fcoe_fcf *sel; struct fcoe_fcf *fcf; unsigned long next_timer = jiffies + msecs_to_jiffies(FIP_VN_KA_PERIOD); - DECLARE_MAC_BUF(buf); u8 send_ctlr_ka; u8 send_port_ka; @@ -1128,9 +1137,8 @@ static void fcoe_ctlr_timeout(unsigned long arg) fcf = sel; /* the old FCF may have been freed */ if (sel) { printk(KERN_INFO "libfcoe: host%d: FIP selected " - "Fibre-Channel Forwarder MAC %s\n", - fip->lp->host->host_no, - print_mac(buf, sel->fcf_mac)); + "Fibre-Channel Forwarder MAC %pM\n", + fip->lp->host->host_no, sel->fcf_mac); memcpy(fip->dest_addr, sel->fcf_mac, ETH_ALEN); fip->port_ka_time = jiffies + msecs_to_jiffies(FIP_VN_KA_PERIOD); diff --git a/drivers/scsi/fnic/fnic_fcs.c b/drivers/scsi/fnic/fnic_fcs.c index 07e6eed..50db3e3 100644 --- a/drivers/scsi/fnic/fnic_fcs.c +++ b/drivers/scsi/fnic/fnic_fcs.c @@ -115,7 +115,7 @@ void fnic_handle_frame(struct work_struct *work) } spin_unlock_irqrestore(&fnic->fnic_lock, flags); - fc_exch_recv(lp, lp->emp, fp); + fc_exch_recv(lp, fp); } } diff --git a/drivers/scsi/fnic/fnic_main.c b/drivers/scsi/fnic/fnic_main.c index 2c266c0..71c7bbe 100644 --- a/drivers/scsi/fnic/fnic_main.c +++ b/drivers/scsi/fnic/fnic_main.c @@ -671,14 +671,6 @@ static int __devinit fnic_probe(struct pci_dev *pdev, lp->link_up = 0; lp->tt = fnic_transport_template; - lp->emp = fc_exch_mgr_alloc(lp, FC_CLASS_3, - FCPIO_HOST_EXCH_RANGE_START, - FCPIO_HOST_EXCH_RANGE_END); - if (!lp->emp) { - err = -ENOMEM; - goto err_out_remove_scsi_host; - } - lp->max_retry_count = fnic->config.flogi_retries; lp->max_rport_retry_count = fnic->config.plogi_retries; lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | @@ -693,12 +685,18 @@ static int __devinit fnic_probe(struct pci_dev *pdev, fc_set_wwnn(lp, fnic->config.node_wwn); fc_set_wwpn(lp, fnic->config.port_wwn); - fc_exch_init(lp); fc_lport_init(lp); + fc_exch_init(lp); fc_elsct_init(lp); fc_rport_init(lp); fc_disc_init(lp); + if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START, + FCPIO_HOST_EXCH_RANGE_END, NULL)) { + err = -ENOMEM; + goto err_out_remove_scsi_host; + } + fc_lport_config(lp); if (fc_set_mfs(lp, fnic->config.maxdatafieldsize + @@ -738,7 +736,7 @@ static int __devinit fnic_probe(struct pci_dev *pdev, return 0; err_out_free_exch_mgr: - fc_exch_mgr_free(lp->emp); + fc_exch_mgr_free(lp); err_out_remove_scsi_host: fc_remove_host(fnic->lport->host); scsi_remove_host(fnic->lport->host); @@ -827,7 +825,7 @@ static void __devexit fnic_remove(struct pci_dev *pdev) fc_remove_host(fnic->lport->host); scsi_remove_host(fnic->lport->host); - fc_exch_mgr_free(fnic->lport->emp); + fc_exch_mgr_free(fnic->lport); vnic_dev_notify_unset(fnic->vdev); fnic_free_vnic_resources(fnic); fnic_free_intr(fnic); diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index 166d964..bb2c696 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -4217,7 +4217,7 @@ static int ibmvfc_alloc_mem(struct ibmvfc_host *vhost) if (!vhost->trace) goto free_disc_buffer; - vhost->tgt_pool = mempool_create_kzalloc_pool(IBMVFC_TGT_MEMPOOL_SZ, + vhost->tgt_pool = mempool_create_kmalloc_pool(IBMVFC_TGT_MEMPOOL_SZ, sizeof(struct ibmvfc_target)); if (!vhost->tgt_pool) { diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h index 4b63dd6..163245a 100644 --- a/drivers/scsi/ipr.h +++ b/drivers/scsi/ipr.h @@ -1199,7 +1199,7 @@ struct ipr_ioa_cfg { struct ata_host ata_host; char ipr_cmd_label[8]; -#define IPR_CMD_LABEL "ipr_cmnd" +#define IPR_CMD_LABEL "ipr_cmd" struct ipr_cmnd *ipr_cmnd_list[IPR_NUM_CMD_BLKS]; u32 ipr_cmnd_list_dma[IPR_NUM_CMD_BLKS]; }; diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index 518dbd9..2b1b834 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -99,6 +99,27 @@ static int iscsi_sw_tcp_recv(read_descriptor_t *rd_desc, struct sk_buff *skb, return total_consumed; } +/** + * iscsi_sw_sk_state_check - check socket state + * @sk: socket + * + * If the socket is in CLOSE or CLOSE_WAIT we should + * not close the connection if there is still some + * data pending. + */ +static inline int iscsi_sw_sk_state_check(struct sock *sk) +{ + struct iscsi_conn *conn = (struct iscsi_conn*)sk->sk_user_data; + + if ((sk->sk_state == TCP_CLOSE_WAIT || sk->sk_state == TCP_CLOSE) && + !atomic_read(&sk->sk_rmem_alloc)) { + ISCSI_SW_TCP_DBG(conn, "TCP_CLOSE|TCP_CLOSE_WAIT\n"); + iscsi_conn_failure(conn, ISCSI_ERR_TCP_CONN_CLOSE); + return -ECONNRESET; + } + return 0; +} + static void iscsi_sw_tcp_data_ready(struct sock *sk, int flag) { struct iscsi_conn *conn = sk->sk_user_data; @@ -117,6 +138,8 @@ static void iscsi_sw_tcp_data_ready(struct sock *sk, int flag) rd_desc.count = 1; tcp_read_sock(sk, &rd_desc, iscsi_sw_tcp_recv); + iscsi_sw_sk_state_check(sk); + read_unlock(&sk->sk_callback_lock); /* If we had to (atomically) map a highmem page, @@ -137,13 +160,7 @@ static void iscsi_sw_tcp_state_change(struct sock *sk) conn = (struct iscsi_conn*)sk->sk_user_data; session = conn->session; - if ((sk->sk_state == TCP_CLOSE_WAIT || - sk->sk_state == TCP_CLOSE) && - !atomic_read(&sk->sk_rmem_alloc)) { - ISCSI_SW_TCP_DBG(conn, "iscsi_tcp_state_change: " - "TCP_CLOSE|TCP_CLOSE_WAIT\n"); - iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED); - } + iscsi_sw_sk_state_check(sk); tcp_conn = conn->dd_data; tcp_sw_conn = tcp_conn->dd_data; diff --git a/drivers/scsi/libfc/fc_disc.c b/drivers/scsi/libfc/fc_disc.c index 6fabf66..c48799e 100644 --- a/drivers/scsi/libfc/fc_disc.c +++ b/drivers/scsi/libfc/fc_disc.c @@ -43,47 +43,14 @@ #define FC_DISC_RETRY_LIMIT 3 /* max retries */ #define FC_DISC_RETRY_DELAY 500UL /* (msecs) delay */ -#define FC_DISC_DELAY 3 - static void fc_disc_gpn_ft_req(struct fc_disc *); static void fc_disc_gpn_ft_resp(struct fc_seq *, struct fc_frame *, void *); -static int fc_disc_new_target(struct fc_disc *, struct fc_rport *, - struct fc_rport_identifiers *); -static void fc_disc_del_target(struct fc_disc *, struct fc_rport *); -static void fc_disc_done(struct fc_disc *); +static void fc_disc_done(struct fc_disc *, enum fc_disc_event); static void fc_disc_timeout(struct work_struct *); -static void fc_disc_single(struct fc_disc *, struct fc_disc_port *); +static int fc_disc_single(struct fc_lport *, struct fc_disc_port *); static void fc_disc_restart(struct fc_disc *); /** - * fc_disc_lookup_rport() - lookup a remote port by port_id - * @lport: Fibre Channel host port instance - * @port_id: remote port port_id to match - */ -struct fc_rport *fc_disc_lookup_rport(const struct fc_lport *lport, - u32 port_id) -{ - const struct fc_disc *disc = &lport->disc; - struct fc_rport *rport, *found = NULL; - struct fc_rport_libfc_priv *rdata; - int disc_found = 0; - - list_for_each_entry(rdata, &disc->rports, peers) { - rport = PRIV_TO_RPORT(rdata); - if (rport->port_id == port_id) { - disc_found = 1; - found = rport; - break; - } - } - - if (!disc_found) - found = NULL; - - return found; -} - -/** * fc_disc_stop_rports() - delete all the remote ports associated with the lport * @disc: The discovery job to stop rports on * @@ -93,70 +60,17 @@ struct fc_rport *fc_disc_lookup_rport(const struct fc_lport *lport, void fc_disc_stop_rports(struct fc_disc *disc) { struct fc_lport *lport; - struct fc_rport *rport; - struct fc_rport_libfc_priv *rdata, *next; + struct fc_rport_priv *rdata, *next; lport = disc->lport; mutex_lock(&disc->disc_mutex); - list_for_each_entry_safe(rdata, next, &disc->rports, peers) { - rport = PRIV_TO_RPORT(rdata); - list_del(&rdata->peers); - lport->tt.rport_logoff(rport); - } - - list_for_each_entry_safe(rdata, next, &disc->rogue_rports, peers) { - rport = PRIV_TO_RPORT(rdata); - lport->tt.rport_logoff(rport); - } - + list_for_each_entry_safe(rdata, next, &disc->rports, peers) + lport->tt.rport_logoff(rdata); mutex_unlock(&disc->disc_mutex); } /** - * fc_disc_rport_callback() - Event handler for rport events - * @lport: The lport which is receiving the event - * @rport: The rport which the event has occured on - * @event: The event that occured - * - * Locking Note: The rport lock should not be held when calling - * this function. - */ -static void fc_disc_rport_callback(struct fc_lport *lport, - struct fc_rport *rport, - enum fc_rport_event event) -{ - struct fc_rport_libfc_priv *rdata = rport->dd_data; - struct fc_disc *disc = &lport->disc; - - FC_DISC_DBG(disc, "Received a %d event for port (%6x)\n", event, - rport->port_id); - - switch (event) { - case RPORT_EV_CREATED: - if (disc) { - mutex_lock(&disc->disc_mutex); - list_add_tail(&rdata->peers, &disc->rports); - mutex_unlock(&disc->disc_mutex); - } - break; - case RPORT_EV_LOGO: - case RPORT_EV_FAILED: - case RPORT_EV_STOP: - mutex_lock(&disc->disc_mutex); - mutex_lock(&rdata->rp_mutex); - if (rdata->trans_state == FC_PORTSTATE_ROGUE) - list_del(&rdata->peers); - mutex_unlock(&rdata->rp_mutex); - mutex_unlock(&disc->disc_mutex); - break; - default: - break; - } - -} - -/** * fc_disc_recv_rscn_req() - Handle Registered State Change Notification (RSCN) * @sp: Current sequence of the RSCN exchange * @fp: RSCN Frame @@ -169,8 +83,6 @@ static void fc_disc_recv_rscn_req(struct fc_seq *sp, struct fc_frame *fp, struct fc_disc *disc) { struct fc_lport *lport; - struct fc_rport *rport; - struct fc_rport_libfc_priv *rdata; struct fc_els_rscn *rp; struct fc_els_rscn_page *pp; struct fc_seq_els_data rjt_data; @@ -224,10 +136,7 @@ static void fc_disc_recv_rscn_req(struct fc_seq *sp, struct fc_frame *fp, break; } dp->lp = lport; - dp->ids.port_id = ntoh24(pp->rscn_fid); - dp->ids.port_name = -1; - dp->ids.node_name = -1; - dp->ids.roles = FC_RPORT_ROLE_UNKNOWN; + dp->port_id = ntoh24(pp->rscn_fid); list_add_tail(&dp->peers, &disc_ports); break; case ELS_ADDR_FMT_AREA: @@ -240,6 +149,19 @@ static void fc_disc_recv_rscn_req(struct fc_seq *sp, struct fc_frame *fp, } } lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); + + /* + * If not doing a complete rediscovery, do GPN_ID on + * the individual ports mentioned in the list. + * If any of these get an error, do a full rediscovery. + * In any case, go through the list and free the entries. + */ + list_for_each_entry_safe(dp, next, &disc_ports, peers) { + list_del(&dp->peers); + if (!redisc) + redisc = fc_disc_single(lport, dp); + kfree(dp); + } if (redisc) { FC_DISC_DBG(disc, "RSCN received: rediscovering\n"); fc_disc_restart(disc); @@ -247,16 +169,6 @@ static void fc_disc_recv_rscn_req(struct fc_seq *sp, struct fc_frame *fp, FC_DISC_DBG(disc, "RSCN received: not rediscovering. " "redisc %d state %d in_prog %d\n", redisc, lport->state, disc->pending); - list_for_each_entry_safe(dp, next, &disc_ports, peers) { - list_del(&dp->peers); - rport = lport->tt.rport_lookup(lport, dp->ids.port_id); - if (rport) { - rdata = rport->dd_data; - list_del(&rdata->peers); - lport->tt.rport_logoff(rport); - } - fc_disc_single(disc, dp); - } } fc_frame_free(fp); return; @@ -308,35 +220,34 @@ static void fc_disc_recv_req(struct fc_seq *sp, struct fc_frame *fp, */ static void fc_disc_restart(struct fc_disc *disc) { - struct fc_rport *rport; - struct fc_rport_libfc_priv *rdata, *next; - struct fc_lport *lport = disc->lport; + if (!disc->disc_callback) + return; FC_DISC_DBG(disc, "Restarting discovery\n"); - list_for_each_entry_safe(rdata, next, &disc->rports, peers) { - rport = PRIV_TO_RPORT(rdata); - list_del(&rdata->peers); - lport->tt.rport_logoff(rport); - } - disc->requested = 1; - if (!disc->pending) - fc_disc_gpn_ft_req(disc); + if (disc->pending) + return; + + /* + * Advance disc_id. This is an arbitrary non-zero number that will + * match the value in the fc_rport_priv after discovery for all + * freshly-discovered remote ports. Avoid wrapping to zero. + */ + disc->disc_id = (disc->disc_id + 2) | 1; + disc->retry_count = 0; + fc_disc_gpn_ft_req(disc); } /** * fc_disc_start() - Fibre Channel Target discovery * @lport: FC local port - * - * Returns non-zero if discovery cannot be started. + * @disc_callback: function to be called when discovery is complete */ static void fc_disc_start(void (*disc_callback)(struct fc_lport *, enum fc_disc_event), struct fc_lport *lport) { - struct fc_rport *rport; - struct fc_rport_identifiers ids; struct fc_disc *disc = &lport->disc; /* @@ -345,145 +256,47 @@ static void fc_disc_start(void (*disc_callback)(struct fc_lport *, * and send the GPN_FT request. */ mutex_lock(&disc->disc_mutex); - disc->disc_callback = disc_callback; - - /* - * If not ready, or already running discovery, just set request flag. - */ - disc->requested = 1; - - if (disc->pending) { - mutex_unlock(&disc->disc_mutex); - return; - } - - /* - * Handle point-to-point mode as a simple discovery - * of the remote port. Yucky, yucky, yuck, yuck! - */ - rport = disc->lport->ptp_rp; - if (rport) { - ids.port_id = rport->port_id; - ids.port_name = rport->port_name; - ids.node_name = rport->node_name; - ids.roles = FC_RPORT_ROLE_UNKNOWN; - get_device(&rport->dev); - - if (!fc_disc_new_target(disc, rport, &ids)) { - disc->event = DISC_EV_SUCCESS; - fc_disc_done(disc); - } - put_device(&rport->dev); - } else { - fc_disc_gpn_ft_req(disc); /* get ports by FC-4 type */ - } - + fc_disc_restart(disc); mutex_unlock(&disc->disc_mutex); } -static struct fc_rport_operations fc_disc_rport_ops = { - .event_callback = fc_disc_rport_callback, -}; - -/** - * fc_disc_new_target() - Handle new target found by discovery - * @lport: FC local port - * @rport: The previous FC remote port (NULL if new remote port) - * @ids: Identifiers for the new FC remote port - * - * Locking Note: This function expects that the disc_mutex is locked - * before it is called. - */ -static int fc_disc_new_target(struct fc_disc *disc, - struct fc_rport *rport, - struct fc_rport_identifiers *ids) -{ - struct fc_lport *lport = disc->lport; - struct fc_rport_libfc_priv *rdata; - int error = 0; - - if (rport && ids->port_name) { - if (rport->port_name == -1) { - /* - * Set WWN and fall through to notify of create. - */ - fc_rport_set_name(rport, ids->port_name, - rport->node_name); - } else if (rport->port_name != ids->port_name) { - /* - * This is a new port with the same FCID as - * a previously-discovered port. Presumably the old - * port logged out and a new port logged in and was - * assigned the same FCID. This should be rare. - * Delete the old one and fall thru to re-create. - */ - fc_disc_del_target(disc, rport); - rport = NULL; - } - } - if (((ids->port_name != -1) || (ids->port_id != -1)) && - ids->port_id != fc_host_port_id(lport->host) && - ids->port_name != lport->wwpn) { - if (!rport) { - rport = lport->tt.rport_lookup(lport, ids->port_id); - if (!rport) { - struct fc_disc_port dp; - dp.lp = lport; - dp.ids.port_id = ids->port_id; - dp.ids.port_name = ids->port_name; - dp.ids.node_name = ids->node_name; - dp.ids.roles = ids->roles; - rport = lport->tt.rport_create(&dp); - } - if (!rport) - error = -ENOMEM; - } - if (rport) { - rdata = rport->dd_data; - rdata->ops = &fc_disc_rport_ops; - rdata->rp_state = RPORT_ST_INIT; - list_add_tail(&rdata->peers, &disc->rogue_rports); - lport->tt.rport_login(rport); - } - } - return error; -} - -/** - * fc_disc_del_target() - Delete a target - * @disc: FC discovery context - * @rport: The remote port to be removed - */ -static void fc_disc_del_target(struct fc_disc *disc, struct fc_rport *rport) -{ - struct fc_lport *lport = disc->lport; - struct fc_rport_libfc_priv *rdata = rport->dd_data; - list_del(&rdata->peers); - lport->tt.rport_logoff(rport); -} - /** * fc_disc_done() - Discovery has been completed * @disc: FC discovery context + * @event: discovery completion status + * * Locking Note: This function expects that the disc mutex is locked before * it is called. The discovery callback is then made with the lock released, * and the lock is re-taken before returning from this function */ -static void fc_disc_done(struct fc_disc *disc) +static void fc_disc_done(struct fc_disc *disc, enum fc_disc_event event) { struct fc_lport *lport = disc->lport; - enum fc_disc_event event; + struct fc_rport_priv *rdata; FC_DISC_DBG(disc, "Discovery complete\n"); - event = disc->event; - disc->event = DISC_EV_NONE; + disc->pending = 0; + if (disc->requested) { + fc_disc_restart(disc); + return; + } - if (disc->requested) - fc_disc_gpn_ft_req(disc); - else - disc->pending = 0; + /* + * Go through all remote ports. If they were found in the latest + * discovery, reverify or log them in. Otherwise, log them out. + * Skip ports which were never discovered. These are the dNS port + * and ports which were created by PLOGI. + */ + list_for_each_entry(rdata, &disc->rports, peers) { + if (!rdata->disc_id) + continue; + if (rdata->disc_id == disc->disc_id) + lport->tt.rport_login(rdata); + else + lport->tt.rport_logoff(rdata); + } mutex_unlock(&disc->disc_mutex); disc->disc_callback(lport, event); @@ -522,11 +335,8 @@ static void fc_disc_error(struct fc_disc *disc, struct fc_frame *fp) } disc->retry_count++; schedule_delayed_work(&disc->disc_work, delay); - } else { - /* exceeded retries */ - disc->event = DISC_EV_FAILED; - fc_disc_done(disc); - } + } else + fc_disc_done(disc, DISC_EV_FAILED); } } @@ -555,7 +365,7 @@ static void fc_disc_gpn_ft_req(struct fc_disc *disc) if (!fp) goto err; - if (lport->tt.elsct_send(lport, NULL, fp, + if (lport->tt.elsct_send(lport, 0, fp, FC_NS_GPN_FT, fc_disc_gpn_ft_resp, disc, lport->e_d_tov)) @@ -565,10 +375,12 @@ err: } /** - * fc_disc_gpn_ft_parse() - Parse the list of IDs and names resulting from a request + * fc_disc_gpn_ft_parse() - Parse the body of the dNS GPN_FT response. * @lport: Fibre Channel host port instance * @buf: GPN_FT response buffer * @len: size of response buffer + * + * Goes through the list of IDs and names resulting from a request. */ static int fc_disc_gpn_ft_parse(struct fc_disc *disc, void *buf, size_t len) { @@ -578,11 +390,11 @@ static int fc_disc_gpn_ft_parse(struct fc_disc *disc, void *buf, size_t len) size_t plen; size_t tlen; int error = 0; - struct fc_disc_port dp; - struct fc_rport *rport; - struct fc_rport_libfc_priv *rdata; + struct fc_rport_identifiers ids; + struct fc_rport_priv *rdata; lport = disc->lport; + disc->seq_count++; /* * Handle partial name record left over from previous call. @@ -591,6 +403,7 @@ static int fc_disc_gpn_ft_parse(struct fc_disc *disc, void *buf, size_t len) plen = len; np = (struct fc_gpn_ft_resp *)bp; tlen = disc->buf_len; + disc->buf_len = 0; if (tlen) { WARN_ON(tlen >= sizeof(*np)); plen = sizeof(*np) - tlen; @@ -621,31 +434,25 @@ static int fc_disc_gpn_ft_parse(struct fc_disc *disc, void *buf, size_t len) * After the first time through the loop, things return to "normal". */ while (plen >= sizeof(*np)) { - dp.lp = lport; - dp.ids.port_id = ntoh24(np->fp_fid); - dp.ids.port_name = ntohll(np->fp_wwpn); - dp.ids.node_name = -1; - dp.ids.roles = FC_RPORT_ROLE_UNKNOWN; - - if ((dp.ids.port_id != fc_host_port_id(lport->host)) && - (dp.ids.port_name != lport->wwpn)) { - rport = lport->tt.rport_create(&dp); - if (rport) { - rdata = rport->dd_data; - rdata->ops = &fc_disc_rport_ops; - rdata->local_port = lport; - list_add_tail(&rdata->peers, - &disc->rogue_rports); - lport->tt.rport_login(rport); - } else + ids.port_id = ntoh24(np->fp_fid); + ids.port_name = ntohll(np->fp_wwpn); + + if (ids.port_id != fc_host_port_id(lport->host) && + ids.port_name != lport->wwpn) { + rdata = lport->tt.rport_create(lport, ids.port_id); + if (rdata) { + rdata->ids.port_name = ids.port_name; + rdata->disc_id = disc->disc_id; + } else { printk(KERN_WARNING "libfc: Failed to allocate " "memory for the newly discovered port " - "(%6x)\n", dp.ids.port_id); + "(%6x)\n", ids.port_id); + error = -ENOMEM; + } } if (np->fp_flags & FC_NS_FID_LAST) { - disc->event = DISC_EV_SUCCESS; - fc_disc_done(disc); + fc_disc_done(disc, DISC_EV_SUCCESS); len = 0; break; } @@ -665,8 +472,6 @@ static int fc_disc_gpn_ft_parse(struct fc_disc *disc, void *buf, size_t len) memcpy(&disc->partial_buf, np, len); } disc->buf_len = (unsigned char) len; - } else { - disc->buf_len = 0; } return error; } @@ -683,8 +488,7 @@ static void fc_disc_timeout(struct work_struct *work) struct fc_disc, disc_work.work); mutex_lock(&disc->disc_mutex); - if (disc->requested && !disc->pending) - fc_disc_gpn_ft_req(disc); + fc_disc_gpn_ft_req(disc); mutex_unlock(&disc->disc_mutex); } @@ -703,10 +507,10 @@ static void fc_disc_gpn_ft_resp(struct fc_seq *sp, struct fc_frame *fp, struct fc_disc *disc = disc_arg; struct fc_ct_hdr *cp; struct fc_frame_header *fh; + enum fc_disc_event event = DISC_EV_NONE; unsigned int seq_cnt; - void *buf = NULL; unsigned int len; - int error; + int error = 0; mutex_lock(&disc->disc_mutex); FC_DISC_DBG(disc, "Received a GPN_FT response\n"); @@ -721,77 +525,158 @@ static void fc_disc_gpn_ft_resp(struct fc_seq *sp, struct fc_frame *fp, fh = fc_frame_header_get(fp); len = fr_len(fp) - sizeof(*fh); seq_cnt = ntohs(fh->fh_seq_cnt); - if (fr_sof(fp) == FC_SOF_I3 && seq_cnt == 0 && - disc->seq_count == 0) { + if (fr_sof(fp) == FC_SOF_I3 && seq_cnt == 0 && disc->seq_count == 0) { cp = fc_frame_payload_get(fp, sizeof(*cp)); if (!cp) { FC_DISC_DBG(disc, "GPN_FT response too short, len %d\n", fr_len(fp)); + event = DISC_EV_FAILED; } else if (ntohs(cp->ct_cmd) == FC_FS_ACC) { /* Accepted, parse the response. */ - buf = cp + 1; len -= sizeof(*cp); + error = fc_disc_gpn_ft_parse(disc, cp + 1, len); } else if (ntohs(cp->ct_cmd) == FC_FS_RJT) { FC_DISC_DBG(disc, "GPN_FT rejected reason %x exp %x " "(check zoning)\n", cp->ct_reason, cp->ct_explan); - disc->event = DISC_EV_FAILED; - fc_disc_done(disc); + event = DISC_EV_FAILED; + if (cp->ct_reason == FC_FS_RJT_UNABL && + cp->ct_explan == FC_FS_EXP_FTNR) + event = DISC_EV_SUCCESS; } else { FC_DISC_DBG(disc, "GPN_FT unexpected response code " "%x\n", ntohs(cp->ct_cmd)); + event = DISC_EV_FAILED; } - } else if (fr_sof(fp) == FC_SOF_N3 && - seq_cnt == disc->seq_count) { - buf = fh + 1; + } else if (fr_sof(fp) == FC_SOF_N3 && seq_cnt == disc->seq_count) { + error = fc_disc_gpn_ft_parse(disc, fh + 1, len); } else { FC_DISC_DBG(disc, "GPN_FT unexpected frame - out of sequence? " "seq_cnt %x expected %x sof %x eof %x\n", seq_cnt, disc->seq_count, fr_sof(fp), fr_eof(fp)); + event = DISC_EV_FAILED; } - if (buf) { - error = fc_disc_gpn_ft_parse(disc, buf, len); - if (error) - fc_disc_error(disc, fp); - else - disc->seq_count++; - } + if (error) + fc_disc_error(disc, fp); + else if (event != DISC_EV_NONE) + fc_disc_done(disc, event); fc_frame_free(fp); - mutex_unlock(&disc->disc_mutex); } /** - * fc_disc_single() - Discover the directory information for a single target - * @lport: FC local port - * @dp: The port to rediscover + * fc_disc_gpn_id_resp() - Handle a response frame from Get Port Names (GPN_ID) + * @sp: exchange sequence + * @fp: response frame + * @rdata_arg: remote port private data * - * Locking Note: This function expects that the disc_mutex is locked - * before it is called. + * Locking Note: This function is called without disc mutex held. */ -static void fc_disc_single(struct fc_disc *disc, struct fc_disc_port *dp) +static void fc_disc_gpn_id_resp(struct fc_seq *sp, struct fc_frame *fp, + void *rdata_arg) { + struct fc_rport_priv *rdata = rdata_arg; + struct fc_rport_priv *new_rdata; struct fc_lport *lport; - struct fc_rport *new_rport; - struct fc_rport_libfc_priv *rdata; + struct fc_disc *disc; + struct fc_ct_hdr *cp; + struct fc_ns_gid_pn *pn; + u64 port_name; - lport = disc->lport; + lport = rdata->local_port; + disc = &lport->disc; - if (dp->ids.port_id == fc_host_port_id(lport->host)) + mutex_lock(&disc->disc_mutex); + if (PTR_ERR(fp) == -FC_EX_CLOSED) goto out; - - new_rport = lport->tt.rport_create(dp); - if (new_rport) { - rdata = new_rport->dd_data; - rdata->ops = &fc_disc_rport_ops; - kfree(dp); - list_add_tail(&rdata->peers, &disc->rogue_rports); - lport->tt.rport_login(new_rport); + if (IS_ERR(fp)) + goto redisc; + + cp = fc_frame_payload_get(fp, sizeof(*cp)); + if (!cp) + goto redisc; + if (ntohs(cp->ct_cmd) == FC_FS_ACC) { + if (fr_len(fp) < sizeof(struct fc_frame_header) + + sizeof(*cp) + sizeof(*pn)) + goto redisc; + pn = (struct fc_ns_gid_pn *)(cp + 1); + port_name = get_unaligned_be64(&pn->fn_wwpn); + if (rdata->ids.port_name == -1) + rdata->ids.port_name = port_name; + else if (rdata->ids.port_name != port_name) { + FC_DISC_DBG(disc, "GPN_ID accepted. WWPN changed. " + "Port-id %x wwpn %llx\n", + rdata->ids.port_id, port_name); + lport->tt.rport_logoff(rdata); + + new_rdata = lport->tt.rport_create(lport, + rdata->ids.port_id); + if (new_rdata) { + new_rdata->disc_id = disc->disc_id; + lport->tt.rport_login(new_rdata); + } + goto out; + } + rdata->disc_id = disc->disc_id; + lport->tt.rport_login(rdata); + } else if (ntohs(cp->ct_cmd) == FC_FS_RJT) { + FC_DISC_DBG(disc, "GPN_ID rejected reason %x exp %x\n", + cp->ct_reason, cp->ct_explan); + lport->tt.rport_logoff(rdata); + } else { + FC_DISC_DBG(disc, "GPN_ID unexpected response code %x\n", + ntohs(cp->ct_cmd)); +redisc: + fc_disc_restart(disc); } - return; out: - kfree(dp); + mutex_unlock(&disc->disc_mutex); + kref_put(&rdata->kref, lport->tt.rport_destroy); +} + +/** + * fc_disc_gpn_id_req() - Send Get Port Names by ID (GPN_ID) request + * @lport: local port + * @rdata: remote port private data + * + * Locking Note: This function expects that the disc_mutex is locked + * before it is called. + * On failure, an error code is returned. + */ +static int fc_disc_gpn_id_req(struct fc_lport *lport, + struct fc_rport_priv *rdata) +{ + struct fc_frame *fp; + + fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + + sizeof(struct fc_ns_fid)); + if (!fp) + return -ENOMEM; + if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, FC_NS_GPN_ID, + fc_disc_gpn_id_resp, rdata, lport->e_d_tov)) + return -ENOMEM; + kref_get(&rdata->kref); + return 0; +} + +/** + * fc_disc_single() - Discover the directory information for a single target + * @lport: local port + * @dp: The port to rediscover + * + * Locking Note: This function expects that the disc_mutex is locked + * before it is called. + */ +static int fc_disc_single(struct fc_lport *lport, struct fc_disc_port *dp) +{ + struct fc_rport_priv *rdata; + + rdata = lport->tt.rport_create(lport, dp->port_id); + if (!rdata) + return -ENOMEM; + rdata->disc_id = 0; + return fc_disc_gpn_id_req(lport, rdata); } /** @@ -841,18 +726,12 @@ int fc_disc_init(struct fc_lport *lport) if (!lport->tt.disc_recv_req) lport->tt.disc_recv_req = fc_disc_recv_req; - if (!lport->tt.rport_lookup) - lport->tt.rport_lookup = fc_disc_lookup_rport; - disc = &lport->disc; INIT_DELAYED_WORK(&disc->disc_work, fc_disc_timeout); mutex_init(&disc->disc_mutex); INIT_LIST_HEAD(&disc->rports); - INIT_LIST_HEAD(&disc->rogue_rports); disc->lport = lport; - disc->delay = FC_DISC_DELAY; - disc->event = DISC_EV_NONE; return 0; } diff --git a/drivers/scsi/libfc/fc_elsct.c b/drivers/scsi/libfc/fc_elsct.c index 5878b34..5cfa687 100644 --- a/drivers/scsi/libfc/fc_elsct.c +++ b/drivers/scsi/libfc/fc_elsct.c @@ -32,7 +32,7 @@ * fc_elsct_send - sends ELS/CT frame */ static struct fc_seq *fc_elsct_send(struct fc_lport *lport, - struct fc_rport *rport, + u32 did, struct fc_frame *fp, unsigned int op, void (*resp)(struct fc_seq *, @@ -41,16 +41,17 @@ static struct fc_seq *fc_elsct_send(struct fc_lport *lport, void *arg, u32 timer_msec) { enum fc_rctl r_ctl; - u32 did = FC_FID_NONE; enum fc_fh_type fh_type; int rc; /* ELS requests */ if ((op >= ELS_LS_RJT) && (op <= ELS_AUTH_ELS)) - rc = fc_els_fill(lport, rport, fp, op, &r_ctl, &did, &fh_type); - else + rc = fc_els_fill(lport, did, fp, op, &r_ctl, &fh_type); + else { /* CT requests */ - rc = fc_ct_fill(lport, fp, op, &r_ctl, &did, &fh_type); + rc = fc_ct_fill(lport, did, fp, op, &r_ctl, &fh_type); + did = FC_FID_DIR_SERV; + } if (rc) return NULL; @@ -69,3 +70,41 @@ int fc_elsct_init(struct fc_lport *lport) return 0; } EXPORT_SYMBOL(fc_elsct_init); + +/** + * fc_els_resp_type() - return string describing ELS response for debug. + * @fp: frame pointer with possible error code. + */ +const char *fc_els_resp_type(struct fc_frame *fp) +{ + const char *msg; + if (IS_ERR(fp)) { + switch (-PTR_ERR(fp)) { + case FC_NO_ERR: + msg = "response no error"; + break; + case FC_EX_TIMEOUT: + msg = "response timeout"; + break; + case FC_EX_CLOSED: + msg = "response closed"; + break; + default: + msg = "response unknown error"; + break; + } + } else { + switch (fc_frame_payload_op(fp)) { + case ELS_LS_ACC: + msg = "accept"; + break; + case ELS_LS_RJT: + msg = "reject"; + break; + default: + msg = "response unknown ELS"; + break; + } + } + return msg; +} diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c index 145ab9b..c1c1574 100644 --- a/drivers/scsi/libfc/fc_exch.c +++ b/drivers/scsi/libfc/fc_exch.c @@ -32,6 +32,9 @@ #include <scsi/libfc.h> #include <scsi/fc_encode.h> +u16 fc_cpu_mask; /* cpu mask for possible cpus */ +EXPORT_SYMBOL(fc_cpu_mask); +static u16 fc_cpu_order; /* 2's power to represent total possible cpus */ static struct kmem_cache *fc_em_cachep; /* cache for exchanges */ /* @@ -48,6 +51,20 @@ static struct kmem_cache *fc_em_cachep; /* cache for exchanges */ */ /* + * Per cpu exchange pool + * + * This structure manages per cpu exchanges in array of exchange pointers. + * This array is allocated followed by struct fc_exch_pool memory for + * assigned range of exchanges to per cpu pool. + */ +struct fc_exch_pool { + u16 next_index; /* next possible free exchange index */ + u16 total_exches; /* total allocated exchanges */ + spinlock_t lock; /* exch pool lock */ + struct list_head ex_list; /* allocated exchanges list */ +}; + +/* * Exchange manager. * * This structure is the center for creating exchanges and sequences. @@ -55,17 +72,13 @@ static struct kmem_cache *fc_em_cachep; /* cache for exchanges */ */ struct fc_exch_mgr { enum fc_class class; /* default class for sequences */ - spinlock_t em_lock; /* exchange manager lock, - must be taken before ex_lock */ - u16 last_xid; /* last allocated exchange ID */ + struct kref kref; /* exchange mgr reference count */ u16 min_xid; /* min exchange ID */ u16 max_xid; /* max exchange ID */ - u16 max_read; /* max exchange ID for read */ - u16 last_read; /* last xid allocated for read */ - u32 total_exches; /* total allocated exchanges */ struct list_head ex_list; /* allocated exchanges list */ - struct fc_lport *lp; /* fc device instance */ mempool_t *ep_pool; /* reserve ep's */ + u16 pool_max_index; /* max exch array index in exch pool */ + struct fc_exch_pool *pool; /* per cpu exch pool */ /* * currently exchange mgr stats are updated but not used. @@ -80,10 +93,15 @@ struct fc_exch_mgr { atomic_t seq_not_found; atomic_t non_bls_resp; } stats; - struct fc_exch **exches; /* for exch pointers indexed by xid */ }; #define fc_seq_exch(sp) container_of(sp, struct fc_exch, seq) +struct fc_exch_mgr_anchor { + struct list_head ema_list; + struct fc_exch_mgr *mp; + bool (*match)(struct fc_frame *); +}; + static void fc_exch_rrq(struct fc_exch *); static void fc_seq_ls_acc(struct fc_seq *); static void fc_seq_ls_rjt(struct fc_seq *, enum fc_els_rjt_reason, @@ -167,8 +185,8 @@ static struct fc_seq *fc_seq_start_next_locked(struct fc_seq *sp); * sequence allocation and deallocation must be locked. * - exchange refcnt can be done atomicly without locks. * - sequence allocation must be locked by exch lock. - * - If the em_lock and ex_lock must be taken at the same time, then the - * em_lock must be taken before the ex_lock. + * - If the EM pool lock and ex_lock must be taken at the same time, then the + * EM pool lock must be taken before the ex_lock. */ /* @@ -268,8 +286,6 @@ static void fc_exch_release(struct fc_exch *ep) mp = ep->em; if (ep->destructor) ep->destructor(&ep->seq, ep->arg); - if (ep->lp->tt.exch_put) - ep->lp->tt.exch_put(ep->lp, mp, ep->xid); WARN_ON(!(ep->esb_stat & ESB_ST_COMPLETE)); mempool_free(ep, mp->ep_pool); } @@ -299,17 +315,31 @@ static int fc_exch_done_locked(struct fc_exch *ep) return rc; } -static void fc_exch_mgr_delete_ep(struct fc_exch *ep) +static inline struct fc_exch *fc_exch_ptr_get(struct fc_exch_pool *pool, + u16 index) { - struct fc_exch_mgr *mp; + struct fc_exch **exches = (struct fc_exch **)(pool + 1); + return exches[index]; +} - mp = ep->em; - spin_lock_bh(&mp->em_lock); - WARN_ON(mp->total_exches <= 0); - mp->total_exches--; - mp->exches[ep->xid - mp->min_xid] = NULL; +static inline void fc_exch_ptr_set(struct fc_exch_pool *pool, u16 index, + struct fc_exch *ep) +{ + ((struct fc_exch **)(pool + 1))[index] = ep; +} + +static void fc_exch_delete(struct fc_exch *ep) +{ + struct fc_exch_pool *pool; + + pool = ep->pool; + spin_lock_bh(&pool->lock); + WARN_ON(pool->total_exches <= 0); + pool->total_exches--; + fc_exch_ptr_set(pool, (ep->xid - ep->em->min_xid) >> fc_cpu_order, + NULL); list_del(&ep->ex_list); - spin_unlock_bh(&mp->em_lock); + spin_unlock_bh(&pool->lock); fc_exch_release(ep); /* drop hold for exch in mp */ } @@ -322,7 +352,7 @@ static inline void fc_exch_timer_set_locked(struct fc_exch *ep, if (ep->state & (FC_EX_RST_CLEANUP | FC_EX_DONE)) return; - FC_EXCH_DBG(ep, "Exchange timed out, notifying the upper layer\n"); + FC_EXCH_DBG(ep, "Exchange timer armed\n"); if (schedule_delayed_work(&ep->timeout_work, msecs_to_jiffies(timer_msec))) @@ -408,6 +438,8 @@ static void fc_exch_timeout(struct work_struct *work) u32 e_stat; int rc = 1; + FC_EXCH_DBG(ep, "Exchange timed out\n"); + spin_lock_bh(&ep->ex_lock); if (ep->state & (FC_EX_RST_CLEANUP | FC_EX_DONE)) goto unlock; @@ -427,7 +459,7 @@ static void fc_exch_timeout(struct work_struct *work) rc = fc_exch_done_locked(ep); spin_unlock_bh(&ep->ex_lock); if (!rc) - fc_exch_mgr_delete_ep(ep); + fc_exch_delete(ep); if (resp) resp(sp, ERR_PTR(-FC_EX_TIMEOUT), arg); fc_seq_exch_abort(sp, 2 * ep->r_a_tov); @@ -460,65 +492,20 @@ static struct fc_seq *fc_seq_alloc(struct fc_exch *ep, u8 seq_id) return sp; } -/* - * fc_em_alloc_xid - returns an xid based on request type - * @lp : ptr to associated lport - * @fp : ptr to the assocated frame +/** + * fc_exch_em_alloc() - allocate an exchange from a specified EM. + * @lport: ptr to the local port + * @mp: ptr to the exchange manager * - * check the associated fc_fsp_pkt to get scsi command type and - * command direction to decide from which range this exch id - * will be allocated from. - * - * Returns : 0 or an valid xid + * Returns pointer to allocated fc_exch with exch lock held. */ -static u16 fc_em_alloc_xid(struct fc_exch_mgr *mp, const struct fc_frame *fp) -{ - u16 xid, min, max; - u16 *plast; - struct fc_exch *ep = NULL; - - if (mp->max_read) { - if (fc_fcp_is_read(fr_fsp(fp))) { - min = mp->min_xid; - max = mp->max_read; - plast = &mp->last_read; - } else { - min = mp->max_read + 1; - max = mp->max_xid; - plast = &mp->last_xid; - } - } else { - min = mp->min_xid; - max = mp->max_xid; - plast = &mp->last_xid; - } - xid = *plast; - do { - xid = (xid == max) ? min : xid + 1; - ep = mp->exches[xid - mp->min_xid]; - } while ((ep != NULL) && (xid != *plast)); - - if (unlikely(ep)) - xid = 0; - else - *plast = xid; - - return xid; -} - -/* - * fc_exch_alloc - allocate an exchange. - * @mp : ptr to the exchange manager - * @xid: input xid - * - * if xid is supplied zero then assign next free exchange ID - * from exchange manager, otherwise use supplied xid. - * Returns with exch lock held. - */ -struct fc_exch *fc_exch_alloc(struct fc_exch_mgr *mp, - struct fc_frame *fp, u16 xid) +static struct fc_exch *fc_exch_em_alloc(struct fc_lport *lport, + struct fc_exch_mgr *mp) { struct fc_exch *ep; + unsigned int cpu; + u16 index; + struct fc_exch_pool *pool; /* allocate memory for exchange */ ep = mempool_alloc(mp->ep_pool, GFP_ATOMIC); @@ -528,16 +515,17 @@ struct fc_exch *fc_exch_alloc(struct fc_exch_mgr *mp, } memset(ep, 0, sizeof(*ep)); - spin_lock_bh(&mp->em_lock); - /* alloc xid if input xid 0 */ - if (!xid) { - /* alloc a new xid */ - xid = fc_em_alloc_xid(mp, fp); - if (!xid) { - printk(KERN_WARNING "libfc: Failed to allocate an exhange\n"); + cpu = smp_processor_id(); + pool = per_cpu_ptr(mp->pool, cpu); + spin_lock_bh(&pool->lock); + index = pool->next_index; + /* allocate new exch from pool */ + while (fc_exch_ptr_get(pool, index)) { + index = index == mp->pool_max_index ? 0 : index + 1; + if (index == pool->next_index) goto err; - } } + pool->next_index = index == mp->pool_max_index ? 0 : index + 1; fc_exch_hold(ep); /* hold for exch in mp */ spin_lock_init(&ep->ex_lock); @@ -548,18 +536,19 @@ struct fc_exch *fc_exch_alloc(struct fc_exch_mgr *mp, */ spin_lock_bh(&ep->ex_lock); - mp->exches[xid - mp->min_xid] = ep; - list_add_tail(&ep->ex_list, &mp->ex_list); + fc_exch_ptr_set(pool, index, ep); + list_add_tail(&ep->ex_list, &pool->ex_list); fc_seq_alloc(ep, ep->seq_id++); - mp->total_exches++; - spin_unlock_bh(&mp->em_lock); + pool->total_exches++; + spin_unlock_bh(&pool->lock); /* * update exchange */ - ep->oxid = ep->xid = xid; + ep->oxid = ep->xid = (index << fc_cpu_order | cpu) + mp->min_xid; ep->em = mp; - ep->lp = mp->lp; + ep->pool = pool; + ep->lp = lport; ep->f_ctl = FC_FC_FIRST_SEQ; /* next seq is first seq */ ep->rxid = FC_XID_UNKNOWN; ep->class = mp->class; @@ -567,11 +556,36 @@ struct fc_exch *fc_exch_alloc(struct fc_exch_mgr *mp, out: return ep; err: - spin_unlock_bh(&mp->em_lock); + spin_unlock_bh(&pool->lock); atomic_inc(&mp->stats.no_free_exch_xid); mempool_free(ep, mp->ep_pool); return NULL; } + +/** + * fc_exch_alloc() - allocate an exchange. + * @lport: ptr to the local port + * @fp: ptr to the FC frame + * + * This function walks the list of the exchange manager(EM) + * anchors to select a EM for new exchange allocation. The + * EM is selected having either a NULL match function pointer + * or call to match function returning true. + */ +struct fc_exch *fc_exch_alloc(struct fc_lport *lport, struct fc_frame *fp) +{ + struct fc_exch_mgr_anchor *ema; + struct fc_exch *ep; + + list_for_each_entry(ema, &lport->ema_list, ema_list) { + if (!ema->match || ema->match(fp)) { + ep = fc_exch_em_alloc(lport, ema->mp); + if (ep) + return ep; + } + } + return NULL; +} EXPORT_SYMBOL(fc_exch_alloc); /* @@ -579,16 +593,18 @@ EXPORT_SYMBOL(fc_exch_alloc); */ static struct fc_exch *fc_exch_find(struct fc_exch_mgr *mp, u16 xid) { + struct fc_exch_pool *pool; struct fc_exch *ep = NULL; if ((xid >= mp->min_xid) && (xid <= mp->max_xid)) { - spin_lock_bh(&mp->em_lock); - ep = mp->exches[xid - mp->min_xid]; + pool = per_cpu_ptr(mp->pool, xid & fc_cpu_mask); + spin_lock_bh(&pool->lock); + ep = fc_exch_ptr_get(pool, (xid - mp->min_xid) >> fc_cpu_order); if (ep) { fc_exch_hold(ep); WARN_ON(ep->xid != xid); } - spin_unlock_bh(&mp->em_lock); + spin_unlock_bh(&pool->lock); } return ep; } @@ -602,7 +618,7 @@ void fc_exch_done(struct fc_seq *sp) rc = fc_exch_done_locked(ep); spin_unlock_bh(&ep->ex_lock); if (!rc) - fc_exch_mgr_delete_ep(ep); + fc_exch_delete(ep); } EXPORT_SYMBOL(fc_exch_done); @@ -610,12 +626,14 @@ EXPORT_SYMBOL(fc_exch_done); * Allocate a new exchange as responder. * Sets the responder ID in the frame header. */ -static struct fc_exch *fc_exch_resp(struct fc_exch_mgr *mp, struct fc_frame *fp) +static struct fc_exch *fc_exch_resp(struct fc_lport *lport, + struct fc_exch_mgr *mp, + struct fc_frame *fp) { struct fc_exch *ep; struct fc_frame_header *fh; - ep = mp->lp->tt.exch_get(mp->lp, fp); + ep = fc_exch_alloc(lport, fp); if (ep) { ep->class = fc_frame_class(fp); @@ -641,7 +659,7 @@ static struct fc_exch *fc_exch_resp(struct fc_exch_mgr *mp, struct fc_frame *fp) ep->esb_stat &= ~ESB_ST_SEQ_INIT; fc_exch_hold(ep); /* hold for caller */ - spin_unlock_bh(&ep->ex_lock); /* lock from exch_get */ + spin_unlock_bh(&ep->ex_lock); /* lock from fc_exch_alloc */ } return ep; } @@ -651,7 +669,8 @@ static struct fc_exch *fc_exch_resp(struct fc_exch_mgr *mp, struct fc_frame *fp) * If fc_pf_rjt_reason is FC_RJT_NONE then this function will have a hold * on the ep that should be released by the caller. */ -static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_exch_mgr *mp, +static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport, + struct fc_exch_mgr *mp, struct fc_frame *fp) { struct fc_frame_header *fh = fc_frame_header_get(fp); @@ -705,7 +724,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_exch_mgr *mp, reject = FC_RJT_RX_ID; goto rel; } - ep = fc_exch_resp(mp, fp); + ep = fc_exch_resp(lport, mp, fp); if (!ep) { reject = FC_RJT_EXCH_EST; /* XXX */ goto out; @@ -822,7 +841,6 @@ struct fc_seq *fc_seq_start_next(struct fc_seq *sp) struct fc_exch *ep = fc_seq_exch(sp); spin_lock_bh(&ep->ex_lock); - WARN_ON((ep->esb_stat & ESB_ST_COMPLETE) != 0); sp = fc_seq_start_next_locked(sp); spin_unlock_bh(&ep->ex_lock); @@ -999,8 +1017,8 @@ static void fc_exch_send_ba_rjt(struct fc_frame *rx_fp, */ memcpy(fh->fh_s_id, rx_fh->fh_d_id, 3); memcpy(fh->fh_d_id, rx_fh->fh_s_id, 3); - fh->fh_ox_id = rx_fh->fh_rx_id; - fh->fh_rx_id = rx_fh->fh_ox_id; + fh->fh_ox_id = rx_fh->fh_ox_id; + fh->fh_rx_id = rx_fh->fh_rx_id; fh->fh_seq_cnt = rx_fh->fh_seq_cnt; fh->fh_r_ctl = FC_RCTL_BA_RJT; fh->fh_type = FC_TYPE_BLS; @@ -1097,7 +1115,7 @@ static void fc_exch_recv_req(struct fc_lport *lp, struct fc_exch_mgr *mp, enum fc_pf_rjt_reason reject; fr_seq(fp) = NULL; - reject = fc_seq_lookup_recip(mp, fp); + reject = fc_seq_lookup_recip(lp, mp, fp); if (reject == FC_RJT_NONE) { sp = fr_seq(fp); /* sequence will be held */ ep = fc_seq_exch(sp); @@ -1123,7 +1141,7 @@ static void fc_exch_recv_req(struct fc_lport *lp, struct fc_exch_mgr *mp, lp->tt.lport_recv(lp, sp, fp); fc_exch_release(ep); /* release from lookup */ } else { - FC_EM_DBG(mp, "exch/seq lookup failed: reject %x\n", reject); + FC_LPORT_DBG(lp, "exch/seq lookup failed: reject %x\n", reject); fc_frame_free(fp); } } @@ -1193,7 +1211,7 @@ static void fc_exch_recv_seq_resp(struct fc_exch_mgr *mp, struct fc_frame *fp) WARN_ON(fc_seq_exch(sp) != ep); spin_unlock_bh(&ep->ex_lock); if (!rc) - fc_exch_mgr_delete_ep(ep); + fc_exch_delete(ep); } /* @@ -1229,13 +1247,12 @@ static void fc_exch_recv_resp(struct fc_exch_mgr *mp, struct fc_frame *fp) struct fc_seq *sp; sp = fc_seq_lookup_orig(mp, fp); /* doesn't hold sequence */ - if (!sp) { + + if (!sp) atomic_inc(&mp->stats.xid_not_found); - FC_EM_DBG(mp, "seq lookup failed\n"); - } else { + else atomic_inc(&mp->stats.non_bls_resp); - FC_EM_DBG(mp, "non-BLS response to sequence"); - } + fc_frame_free(fp); } @@ -1304,7 +1321,7 @@ static void fc_exch_abts_resp(struct fc_exch *ep, struct fc_frame *fp) rc = fc_exch_done_locked(ep); spin_unlock_bh(&ep->ex_lock); if (!rc) - fc_exch_mgr_delete_ep(ep); + fc_exch_delete(ep); if (resp) resp(sp, fp, ex_resp_arg); @@ -1447,44 +1464,77 @@ static void fc_exch_reset(struct fc_exch *ep) rc = fc_exch_done_locked(ep); spin_unlock_bh(&ep->ex_lock); if (!rc) - fc_exch_mgr_delete_ep(ep); + fc_exch_delete(ep); if (resp) resp(sp, ERR_PTR(-FC_EX_CLOSED), arg); } -/* - * Reset an exchange manager, releasing all sequences and exchanges. - * If sid is non-zero, reset only exchanges we source from that FID. - * If did is non-zero, reset only exchanges destined to that FID. +/** + * fc_exch_pool_reset() - Resets an per cpu exches pool. + * @lport: ptr to the local port + * @pool: ptr to the per cpu exches pool + * @sid: source FC ID + * @did: destination FC ID + * + * Resets an per cpu exches pool, releasing its all sequences + * and exchanges. If sid is non-zero, then reset only exchanges + * we sourced from that FID. If did is non-zero, reset only + * exchanges destined to that FID. */ -void fc_exch_mgr_reset(struct fc_lport *lp, u32 sid, u32 did) +static void fc_exch_pool_reset(struct fc_lport *lport, + struct fc_exch_pool *pool, + u32 sid, u32 did) { struct fc_exch *ep; struct fc_exch *next; - struct fc_exch_mgr *mp = lp->emp; - spin_lock_bh(&mp->em_lock); + spin_lock_bh(&pool->lock); restart: - list_for_each_entry_safe(ep, next, &mp->ex_list, ex_list) { - if ((sid == 0 || sid == ep->sid) && + list_for_each_entry_safe(ep, next, &pool->ex_list, ex_list) { + if ((lport == ep->lp) && + (sid == 0 || sid == ep->sid) && (did == 0 || did == ep->did)) { fc_exch_hold(ep); - spin_unlock_bh(&mp->em_lock); + spin_unlock_bh(&pool->lock); fc_exch_reset(ep); fc_exch_release(ep); - spin_lock_bh(&mp->em_lock); + spin_lock_bh(&pool->lock); /* - * must restart loop incase while lock was down - * multiple eps were released. + * must restart loop incase while lock + * was down multiple eps were released. */ goto restart; } } - spin_unlock_bh(&mp->em_lock); + spin_unlock_bh(&pool->lock); +} + +/** + * fc_exch_mgr_reset() - Resets all EMs of a lport + * @lport: ptr to the local port + * @sid: source FC ID + * @did: destination FC ID + * + * Reset all EMs of a lport, releasing its all sequences and + * exchanges. If sid is non-zero, then reset only exchanges + * we sourced from that FID. If did is non-zero, reset only + * exchanges destined to that FID. + */ +void fc_exch_mgr_reset(struct fc_lport *lport, u32 sid, u32 did) +{ + struct fc_exch_mgr_anchor *ema; + unsigned int cpu; + + list_for_each_entry(ema, &lport->ema_list, ema_list) { + for_each_possible_cpu(cpu) + fc_exch_pool_reset(lport, + per_cpu_ptr(ema->mp->pool, cpu), + sid, did); + } } EXPORT_SYMBOL(fc_exch_mgr_reset); @@ -1730,85 +1780,129 @@ reject: fc_frame_free(fp); } +struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *lport, + struct fc_exch_mgr *mp, + bool (*match)(struct fc_frame *)) +{ + struct fc_exch_mgr_anchor *ema; + + ema = kmalloc(sizeof(*ema), GFP_ATOMIC); + if (!ema) + return ema; + + ema->mp = mp; + ema->match = match; + /* add EM anchor to EM anchors list */ + list_add_tail(&ema->ema_list, &lport->ema_list); + kref_get(&mp->kref); + return ema; +} +EXPORT_SYMBOL(fc_exch_mgr_add); + +static void fc_exch_mgr_destroy(struct kref *kref) +{ + struct fc_exch_mgr *mp = container_of(kref, struct fc_exch_mgr, kref); + + mempool_destroy(mp->ep_pool); + free_percpu(mp->pool); + kfree(mp); +} + +void fc_exch_mgr_del(struct fc_exch_mgr_anchor *ema) +{ + /* remove EM anchor from EM anchors list */ + list_del(&ema->ema_list); + kref_put(&ema->mp->kref, fc_exch_mgr_destroy); + kfree(ema); +} +EXPORT_SYMBOL(fc_exch_mgr_del); + struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *lp, enum fc_class class, - u16 min_xid, u16 max_xid) + u16 min_xid, u16 max_xid, + bool (*match)(struct fc_frame *)) { struct fc_exch_mgr *mp; - size_t len; + u16 pool_exch_range; + size_t pool_size; + unsigned int cpu; + struct fc_exch_pool *pool; - if (max_xid <= min_xid || min_xid == 0 || max_xid == FC_XID_UNKNOWN) { + if (max_xid <= min_xid || max_xid == FC_XID_UNKNOWN || + (min_xid & fc_cpu_mask) != 0) { FC_LPORT_DBG(lp, "Invalid min_xid 0x:%x and max_xid 0x:%x\n", min_xid, max_xid); return NULL; } /* - * Memory need for EM + * allocate memory for EM */ -#define xid_ok(i, m1, m2) (((i) >= (m1)) && ((i) <= (m2))) - len = (max_xid - min_xid + 1) * (sizeof(struct fc_exch *)); - len += sizeof(struct fc_exch_mgr); - - mp = kzalloc(len, GFP_ATOMIC); + mp = kzalloc(sizeof(struct fc_exch_mgr), GFP_ATOMIC); if (!mp) return NULL; mp->class = class; - mp->total_exches = 0; - mp->exches = (struct fc_exch **)(mp + 1); - mp->lp = lp; /* adjust em exch xid range for offload */ mp->min_xid = min_xid; mp->max_xid = max_xid; - mp->last_xid = min_xid - 1; - mp->max_read = 0; - mp->last_read = 0; - if (lp->lro_enabled && xid_ok(lp->lro_xid, min_xid, max_xid)) { - mp->max_read = lp->lro_xid; - mp->last_read = min_xid - 1; - mp->last_xid = mp->max_read; - } else { - /* disable lro if no xid control over read */ - lp->lro_enabled = 0; - } - - INIT_LIST_HEAD(&mp->ex_list); - spin_lock_init(&mp->em_lock); mp->ep_pool = mempool_create_slab_pool(2, fc_em_cachep); if (!mp->ep_pool) goto free_mp; + /* + * Setup per cpu exch pool with entire exchange id range equally + * divided across all cpus. The exch pointers array memory is + * allocated for exch range per pool. + */ + pool_exch_range = (mp->max_xid - mp->min_xid + 1) / (fc_cpu_mask + 1); + mp->pool_max_index = pool_exch_range - 1; + + /* + * Allocate and initialize per cpu exch pool + */ + pool_size = sizeof(*pool) + pool_exch_range * sizeof(struct fc_exch *); + mp->pool = __alloc_percpu(pool_size, __alignof__(struct fc_exch_pool)); + if (!mp->pool) + goto free_mempool; + for_each_possible_cpu(cpu) { + pool = per_cpu_ptr(mp->pool, cpu); + spin_lock_init(&pool->lock); + INIT_LIST_HEAD(&pool->ex_list); + } + + kref_init(&mp->kref); + if (!fc_exch_mgr_add(lp, mp, match)) { + free_percpu(mp->pool); + goto free_mempool; + } + + /* + * Above kref_init() sets mp->kref to 1 and then + * call to fc_exch_mgr_add incremented mp->kref again, + * so adjust that extra increment. + */ + kref_put(&mp->kref, fc_exch_mgr_destroy); return mp; +free_mempool: + mempool_destroy(mp->ep_pool); free_mp: kfree(mp); return NULL; } EXPORT_SYMBOL(fc_exch_mgr_alloc); -void fc_exch_mgr_free(struct fc_exch_mgr *mp) +void fc_exch_mgr_free(struct fc_lport *lport) { - WARN_ON(!mp); - /* - * The total exch count must be zero - * before freeing exchange manager. - */ - WARN_ON(mp->total_exches != 0); - mempool_destroy(mp->ep_pool); - kfree(mp); + struct fc_exch_mgr_anchor *ema, *next; + + list_for_each_entry_safe(ema, next, &lport->ema_list, ema_list) + fc_exch_mgr_del(ema); } EXPORT_SYMBOL(fc_exch_mgr_free); -struct fc_exch *fc_exch_get(struct fc_lport *lp, struct fc_frame *fp) -{ - if (!lp || !lp->emp) - return NULL; - - return fc_exch_alloc(lp->emp, fp, 0); -} -EXPORT_SYMBOL(fc_exch_get); struct fc_seq *fc_exch_seq_send(struct fc_lport *lp, struct fc_frame *fp, @@ -1823,7 +1917,7 @@ struct fc_seq *fc_exch_seq_send(struct fc_lport *lp, struct fc_frame_header *fh; int rc = 1; - ep = lp->tt.exch_get(lp, fp); + ep = fc_exch_alloc(lp, fp); if (!ep) { fc_frame_free(fp); return NULL; @@ -1843,7 +1937,8 @@ struct fc_seq *fc_exch_seq_send(struct fc_lport *lp, fc_exch_setup_hdr(ep, fp, ep->f_ctl); sp->cnt++; - fc_fcp_ddp_setup(fr_fsp(fp), ep->xid); + if (ep->xid <= lp->lro_xid) + fc_fcp_ddp_setup(fr_fsp(fp), ep->xid); if (unlikely(lp->tt.frame_send(lp, fp))) goto err; @@ -1860,7 +1955,7 @@ err: rc = fc_exch_done_locked(ep); spin_unlock_bh(&ep->ex_lock); if (!rc) - fc_exch_mgr_delete_ep(ep); + fc_exch_delete(ep); return NULL; } EXPORT_SYMBOL(fc_exch_seq_send); @@ -1868,24 +1963,44 @@ EXPORT_SYMBOL(fc_exch_seq_send); /* * Receive a frame */ -void fc_exch_recv(struct fc_lport *lp, struct fc_exch_mgr *mp, - struct fc_frame *fp) +void fc_exch_recv(struct fc_lport *lp, struct fc_frame *fp) { struct fc_frame_header *fh = fc_frame_header_get(fp); - u32 f_ctl; + struct fc_exch_mgr_anchor *ema; + u32 f_ctl, found = 0; + u16 oxid; /* lport lock ? */ - if (!lp || !mp || (lp->state == LPORT_ST_NONE)) { + if (!lp || lp->state == LPORT_ST_DISABLED) { FC_LPORT_DBG(lp, "Receiving frames for an lport that " "has not been initialized correctly\n"); fc_frame_free(fp); return; } + f_ctl = ntoh24(fh->fh_f_ctl); + oxid = ntohs(fh->fh_ox_id); + if (f_ctl & FC_FC_EX_CTX) { + list_for_each_entry(ema, &lp->ema_list, ema_list) { + if ((oxid >= ema->mp->min_xid) && + (oxid <= ema->mp->max_xid)) { + found = 1; + break; + } + } + + if (!found) { + FC_LPORT_DBG(lp, "Received response for out " + "of range oxid:%hx\n", oxid); + fc_frame_free(fp); + return; + } + } else + ema = list_entry(lp->ema_list.prev, typeof(*ema), ema_list); + /* * If frame is marked invalid, just drop it. */ - f_ctl = ntoh24(fh->fh_f_ctl); switch (fr_eof(fp)) { case FC_EOF_T: if (f_ctl & FC_FC_END_SEQ) @@ -1893,34 +2008,24 @@ void fc_exch_recv(struct fc_lport *lp, struct fc_exch_mgr *mp, /* fall through */ case FC_EOF_N: if (fh->fh_type == FC_TYPE_BLS) - fc_exch_recv_bls(mp, fp); + fc_exch_recv_bls(ema->mp, fp); else if ((f_ctl & (FC_FC_EX_CTX | FC_FC_SEQ_CTX)) == FC_FC_EX_CTX) - fc_exch_recv_seq_resp(mp, fp); + fc_exch_recv_seq_resp(ema->mp, fp); else if (f_ctl & FC_FC_SEQ_CTX) - fc_exch_recv_resp(mp, fp); + fc_exch_recv_resp(ema->mp, fp); else - fc_exch_recv_req(lp, mp, fp); + fc_exch_recv_req(lp, ema->mp, fp); break; default: - FC_EM_DBG(mp, "dropping invalid frame (eof %x)", fr_eof(fp)); + FC_LPORT_DBG(lp, "dropping invalid frame (eof %x)", fr_eof(fp)); fc_frame_free(fp); - break; } } EXPORT_SYMBOL(fc_exch_recv); int fc_exch_init(struct fc_lport *lp) { - if (!lp->tt.exch_get) { - /* - * exch_put() should be NULL if - * exch_get() is NULL - */ - WARN_ON(lp->tt.exch_put); - lp->tt.exch_get = fc_exch_get; - } - if (!lp->tt.seq_start_next) lp->tt.seq_start_next = fc_seq_start_next; @@ -1942,6 +2047,28 @@ int fc_exch_init(struct fc_lport *lp) if (!lp->tt.seq_exch_abort) lp->tt.seq_exch_abort = fc_seq_exch_abort; + /* + * Initialize fc_cpu_mask and fc_cpu_order. The + * fc_cpu_mask is set for nr_cpu_ids rounded up + * to order of 2's * power and order is stored + * in fc_cpu_order as this is later required in + * mapping between an exch id and exch array index + * in per cpu exch pool. + * + * This round up is required to align fc_cpu_mask + * to exchange id's lower bits such that all incoming + * frames of an exchange gets delivered to the same + * cpu on which exchange originated by simple bitwise + * AND operation between fc_cpu_mask and exchange id. + */ + fc_cpu_mask = 1; + fc_cpu_order = 0; + while (fc_cpu_mask < nr_cpu_ids) { + fc_cpu_mask <<= 1; + fc_cpu_order++; + } + fc_cpu_mask--; + return 0; } EXPORT_SYMBOL(fc_exch_init); diff --git a/drivers/scsi/libfc/fc_fcp.c b/drivers/scsi/libfc/fc_fcp.c index e303e0d..59a4408 100644 --- a/drivers/scsi/libfc/fc_fcp.c +++ b/drivers/scsi/libfc/fc_fcp.c @@ -507,33 +507,6 @@ static int fc_fcp_send_data(struct fc_fcp_pkt *fsp, struct fc_seq *seq, f_ctl = FC_FC_REL_OFF; WARN_ON(!seq); - /* - * If a get_page()/put_page() will fail, don't use sg lists - * in the fc_frame structure. - * - * The put_page() may be long after the I/O has completed - * in the case of FCoE, since the network driver does it - * via free_skb(). See the test in free_pages_check(). - * - * Test this case with 'dd </dev/zero >/dev/st0 bs=64k'. - */ - if (using_sg) { - for (sg = scsi_sglist(sc); sg; sg = sg_next(sg)) { - if (page_count(sg_page(sg)) == 0 || - (sg_page(sg)->flags & (1 << PG_lru | - 1 << PG_private | - 1 << PG_locked | - 1 << PG_active | - 1 << PG_slab | - 1 << PG_swapcache | - 1 << PG_writeback | - 1 << PG_reserved | - 1 << PG_buddy))) { - using_sg = 0; - break; - } - } - } sg = scsi_sglist(sc); while (remaining > 0 && sg) { @@ -569,8 +542,6 @@ static int fc_fcp_send_data(struct fc_fcp_pkt *fsp, struct fc_seq *seq, } sg_bytes = min(tlen, sg->length - offset); if (using_sg) { - WARN_ON(skb_shinfo(fp_skb(fp))->nr_frags > - FC_FRAME_SG_LEN); get_page(sg_page(sg)); skb_fill_page_desc(fp_skb(fp), skb_shinfo(fp_skb(fp))->nr_frags, @@ -1337,7 +1308,7 @@ static void fc_fcp_rec(struct fc_fcp_pkt *fsp) fc_fill_fc_hdr(fp, FC_RCTL_ELS_REQ, rport->port_id, fc_host_port_id(rp->local_port->host), FC_TYPE_ELS, FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT, 0); - if (lp->tt.elsct_send(lp, rport, fp, ELS_REC, fc_fcp_rec_resp, + if (lp->tt.elsct_send(lp, rport->port_id, fp, ELS_REC, fc_fcp_rec_resp, fsp, jiffies_to_msecs(FC_SCSI_REC_TOV))) { fc_fcp_pkt_hold(fsp); /* hold while REC outstanding */ return; diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c index 745fa55..bd2f771 100644 --- a/drivers/scsi/libfc/fc_lport.c +++ b/drivers/scsi/libfc/fc_lport.c @@ -113,7 +113,7 @@ static void fc_lport_enter_ready(struct fc_lport *); static void fc_lport_enter_logo(struct fc_lport *); static const char *fc_lport_state_names[] = { - [LPORT_ST_NONE] = "none", + [LPORT_ST_DISABLED] = "disabled", [LPORT_ST_FLOGI] = "FLOGI", [LPORT_ST_DNS] = "dNS", [LPORT_ST_RPN_ID] = "RPN_ID", @@ -133,57 +133,44 @@ static int fc_frame_drop(struct fc_lport *lport, struct fc_frame *fp) /** * fc_lport_rport_callback() - Event handler for rport events * @lport: The lport which is receiving the event - * @rport: The rport which the event has occured on + * @rdata: private remote port data * @event: The event that occured * * Locking Note: The rport lock should not be held when calling * this function. */ static void fc_lport_rport_callback(struct fc_lport *lport, - struct fc_rport *rport, + struct fc_rport_priv *rdata, enum fc_rport_event event) { FC_LPORT_DBG(lport, "Received a %d event for port (%6x)\n", event, - rport->port_id); + rdata->ids.port_id); + mutex_lock(&lport->lp_mutex); switch (event) { - case RPORT_EV_CREATED: - if (rport->port_id == FC_FID_DIR_SERV) { - mutex_lock(&lport->lp_mutex); - if (lport->state == LPORT_ST_DNS) { - lport->dns_rp = rport; - fc_lport_enter_rpn_id(lport); - } else { - FC_LPORT_DBG(lport, "Received an CREATED event " - "on port (%6x) for the directory " - "server, but the lport is not " - "in the DNS state, it's in the " - "%d state", rport->port_id, - lport->state); - lport->tt.rport_logoff(rport); - } - mutex_unlock(&lport->lp_mutex); - } else - FC_LPORT_DBG(lport, "Received an event for port (%6x) " - "which is not the directory server\n", - rport->port_id); + case RPORT_EV_READY: + if (lport->state == LPORT_ST_DNS) { + lport->dns_rp = rdata; + fc_lport_enter_rpn_id(lport); + } else { + FC_LPORT_DBG(lport, "Received an READY event " + "on port (%6x) for the directory " + "server, but the lport is not " + "in the DNS state, it's in the " + "%d state", rdata->ids.port_id, + lport->state); + lport->tt.rport_logoff(rdata); + } break; case RPORT_EV_LOGO: case RPORT_EV_FAILED: case RPORT_EV_STOP: - if (rport->port_id == FC_FID_DIR_SERV) { - mutex_lock(&lport->lp_mutex); - lport->dns_rp = NULL; - mutex_unlock(&lport->lp_mutex); - - } else - FC_LPORT_DBG(lport, "Received an event for port (%6x) " - "which is not the directory server\n", - rport->port_id); + lport->dns_rp = NULL; break; case RPORT_EV_NONE: break; } + mutex_unlock(&lport->lp_mutex); } /** @@ -211,20 +198,13 @@ static void fc_lport_ptp_setup(struct fc_lport *lport, u32 remote_fid, u64 remote_wwpn, u64 remote_wwnn) { - struct fc_disc_port dp; - - dp.lp = lport; - dp.ids.port_id = remote_fid; - dp.ids.port_name = remote_wwpn; - dp.ids.node_name = remote_wwnn; - dp.ids.roles = FC_RPORT_ROLE_UNKNOWN; - - if (lport->ptp_rp) { + mutex_lock(&lport->disc.disc_mutex); + if (lport->ptp_rp) lport->tt.rport_logoff(lport->ptp_rp); - lport->ptp_rp = NULL; - } - - lport->ptp_rp = lport->tt.rport_create(&dp); + lport->ptp_rp = lport->tt.rport_create(lport, remote_fid); + lport->ptp_rp->ids.port_name = remote_wwpn; + lport->ptp_rp->ids.node_name = remote_wwnn; + mutex_unlock(&lport->disc.disc_mutex); lport->tt.rport_login(lport->ptp_rp); @@ -472,56 +452,6 @@ static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp, } /** - * fc_lport_recv_adisc_req() - Handle received Address Discovery Request - * @lport: Fibre Channel local port recieving the ADISC - * @sp: current sequence in the ADISC exchange - * @fp: ADISC request frame - * - * Locking Note: The lport lock is expected to be held before calling - * this function. - */ -static void fc_lport_recv_adisc_req(struct fc_seq *sp, struct fc_frame *in_fp, - struct fc_lport *lport) -{ - struct fc_frame *fp; - struct fc_exch *ep = fc_seq_exch(sp); - struct fc_els_adisc *req, *rp; - struct fc_seq_els_data rjt_data; - size_t len; - u32 f_ctl; - - FC_LPORT_DBG(lport, "Received ADISC request while in state %s\n", - fc_lport_state(lport)); - - req = fc_frame_payload_get(in_fp, sizeof(*req)); - if (!req) { - rjt_data.fp = NULL; - rjt_data.reason = ELS_RJT_LOGIC; - rjt_data.explan = ELS_EXPL_NONE; - lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); - } else { - len = sizeof(*rp); - fp = fc_frame_alloc(lport, len); - if (fp) { - rp = fc_frame_payload_get(fp, len); - memset(rp, 0, len); - rp->adisc_cmd = ELS_LS_ACC; - rp->adisc_wwpn = htonll(lport->wwpn); - rp->adisc_wwnn = htonll(lport->wwnn); - hton24(rp->adisc_port_id, - fc_host_port_id(lport->host)); - sp = lport->tt.seq_start_next(sp); - f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; - f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; - fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, - FC_TYPE_ELS, f_ctl, 0); - lport->tt.seq_send(lport, sp, fp); - } - } - fc_frame_free(in_fp); -} - -/** * fc_lport_recv_logo_req() - Handle received fabric LOGO request * @lport: Fibre Channel local port recieving the LOGO * @sp: current sequence in the LOGO exchange @@ -550,7 +480,7 @@ int fc_fabric_login(struct fc_lport *lport) int rc = -1; mutex_lock(&lport->lp_mutex); - if (lport->state == LPORT_ST_NONE) { + if (lport->state == LPORT_ST_DISABLED) { fc_lport_enter_reset(lport); rc = 0; } @@ -637,12 +567,13 @@ EXPORT_SYMBOL(fc_fabric_logoff); int fc_lport_destroy(struct fc_lport *lport) { mutex_lock(&lport->lp_mutex); - lport->state = LPORT_ST_NONE; + lport->state = LPORT_ST_DISABLED; lport->link_up = 0; lport->tt.frame_send = fc_frame_drop; mutex_unlock(&lport->lp_mutex); lport->tt.fcp_abort_io(lport); + lport->tt.disc_stop_final(lport); lport->tt.exch_mgr_reset(lport, 0, 0); return 0; } @@ -722,7 +653,8 @@ static void fc_lport_enter_ready(struct fc_lport *lport) fc_lport_state_enter(lport, LPORT_ST_READY); - lport->tt.disc_start(fc_lport_disc_callback, lport); + if (!lport->ptp_rp) + lport->tt.disc_start(fc_lport_disc_callback, lport); } /** @@ -808,8 +740,6 @@ static void fc_lport_recv_flogi_req(struct fc_seq *sp_in, fc_lport_ptp_setup(lport, remote_fid, remote_wwpn, get_unaligned_be64(&flp->fl_wwnn)); - lport->tt.disc_start(fc_lport_disc_callback, lport); - out: sp = fr_seq(rx_fp); fc_frame_free(rx_fp); @@ -832,10 +762,6 @@ static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp, { struct fc_frame_header *fh = fc_frame_header_get(fp); void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *); - struct fc_rport *rport; - u32 s_id; - u32 d_id; - struct fc_seq_els_data rjt_data; mutex_lock(&lport->lp_mutex); @@ -844,11 +770,14 @@ static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp, * RSCN here. These don't require a session. * Even if we had a session, it might not be ready. */ - if (fh->fh_type == FC_TYPE_ELS && fh->fh_r_ctl == FC_RCTL_ELS_REQ) { + if (!lport->link_up) + fc_frame_free(fp); + else if (fh->fh_type == FC_TYPE_ELS && + fh->fh_r_ctl == FC_RCTL_ELS_REQ) { /* * Check opcode. */ - recv = NULL; + recv = lport->tt.rport_recv_req; switch (fc_frame_payload_op(fp)) { case ELS_FLOGI: recv = fc_lport_recv_flogi_req; @@ -870,34 +799,9 @@ static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp, case ELS_RNID: recv = fc_lport_recv_rnid_req; break; - case ELS_ADISC: - recv = fc_lport_recv_adisc_req; - break; } - if (recv) - recv(sp, fp, lport); - else { - /* - * Find session. - * If this is a new incoming PLOGI, we won't find it. - */ - s_id = ntoh24(fh->fh_s_id); - d_id = ntoh24(fh->fh_d_id); - - rport = lport->tt.rport_lookup(lport, s_id); - if (rport) - lport->tt.rport_recv_req(sp, fp, rport); - else { - rjt_data.fp = NULL; - rjt_data.reason = ELS_RJT_UNAB; - rjt_data.explan = ELS_EXPL_NONE; - lport->tt.seq_els_rsp_send(sp, - ELS_LS_RJT, - &rjt_data); - fc_frame_free(fp); - } - } + recv(sp, fp, lport); } else { FC_LPORT_DBG(lport, "dropping invalid frame (eof %x)\n", fr_eof(fp)); @@ -930,38 +834,61 @@ int fc_lport_reset(struct fc_lport *lport) EXPORT_SYMBOL(fc_lport_reset); /** - * fc_rport_enter_reset() - Reset the local port + * fc_lport_reset_locked() - Reset the local port * @lport: Fibre Channel local port to be reset * * Locking Note: The lport lock is expected to be held before calling * this routine. */ -static void fc_lport_enter_reset(struct fc_lport *lport) +static void fc_lport_reset_locked(struct fc_lport *lport) { - FC_LPORT_DBG(lport, "Entered RESET state from %s state\n", - fc_lport_state(lport)); - - fc_lport_state_enter(lport, LPORT_ST_RESET); - if (lport->dns_rp) lport->tt.rport_logoff(lport->dns_rp); - if (lport->ptp_rp) { - lport->tt.rport_logoff(lport->ptp_rp); - lport->ptp_rp = NULL; - } + lport->ptp_rp = NULL; lport->tt.disc_stop(lport); lport->tt.exch_mgr_reset(lport, 0, 0); fc_host_fabric_name(lport->host) = 0; fc_host_port_id(lport->host) = 0; +} +/** + * fc_lport_enter_reset() - Reset the local port + * @lport: Fibre Channel local port to be reset + * + * Locking Note: The lport lock is expected to be held before calling + * this routine. + */ +static void fc_lport_enter_reset(struct fc_lport *lport) +{ + FC_LPORT_DBG(lport, "Entered RESET state from %s state\n", + fc_lport_state(lport)); + + fc_lport_state_enter(lport, LPORT_ST_RESET); + fc_lport_reset_locked(lport); if (lport->link_up) fc_lport_enter_flogi(lport); } /** + * fc_lport_enter_disabled() - disable the local port + * @lport: Fibre Channel local port to be reset + * + * Locking Note: The lport lock is expected to be held before calling + * this routine. + */ +static void fc_lport_enter_disabled(struct fc_lport *lport) +{ + FC_LPORT_DBG(lport, "Entered disabled state from %s state\n", + fc_lport_state(lport)); + + fc_lport_state_enter(lport, LPORT_ST_DISABLED); + fc_lport_reset_locked(lport); +} + +/** * fc_lport_error() - Handler for any errors * @lport: The fc_lport object * @fp: The frame pointer @@ -992,7 +919,7 @@ static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp) schedule_delayed_work(&lport->retry_work, delay); } else { switch (lport->state) { - case LPORT_ST_NONE: + case LPORT_ST_DISABLED: case LPORT_ST_READY: case LPORT_ST_RESET: case LPORT_ST_RPN_ID: @@ -1026,13 +953,13 @@ static void fc_lport_rft_id_resp(struct fc_seq *sp, struct fc_frame *fp, struct fc_frame_header *fh; struct fc_ct_hdr *ct; + FC_LPORT_DBG(lport, "Received a RFT_ID %s\n", fc_els_resp_type(fp)); + if (fp == ERR_PTR(-FC_EX_CLOSED)) return; mutex_lock(&lport->lp_mutex); - FC_LPORT_DBG(lport, "Received a RFT_ID response\n"); - if (lport->state != LPORT_ST_RFT_ID) { FC_LPORT_DBG(lport, "Received a RFT_ID response, but in state " "%s\n", fc_lport_state(lport)); @@ -1080,13 +1007,13 @@ static void fc_lport_rpn_id_resp(struct fc_seq *sp, struct fc_frame *fp, struct fc_frame_header *fh; struct fc_ct_hdr *ct; + FC_LPORT_DBG(lport, "Received a RPN_ID %s\n", fc_els_resp_type(fp)); + if (fp == ERR_PTR(-FC_EX_CLOSED)) return; mutex_lock(&lport->lp_mutex); - FC_LPORT_DBG(lport, "Received a RPN_ID response\n"); - if (lport->state != LPORT_ST_RPN_ID) { FC_LPORT_DBG(lport, "Received a RPN_ID response, but in state " "%s\n", fc_lport_state(lport)); @@ -1132,13 +1059,13 @@ static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp, struct fc_lport *lport = lp_arg; u8 op; + FC_LPORT_DBG(lport, "Received a SCR %s\n", fc_els_resp_type(fp)); + if (fp == ERR_PTR(-FC_EX_CLOSED)) return; mutex_lock(&lport->lp_mutex); - FC_LPORT_DBG(lport, "Received a SCR response\n"); - if (lport->state != LPORT_ST_SCR) { FC_LPORT_DBG(lport, "Received a SCR response, but in state " "%s\n", fc_lport_state(lport)); @@ -1186,7 +1113,7 @@ static void fc_lport_enter_scr(struct fc_lport *lport) return; } - if (!lport->tt.elsct_send(lport, NULL, fp, ELS_SCR, + if (!lport->tt.elsct_send(lport, FC_FID_FCTRL, fp, ELS_SCR, fc_lport_scr_resp, lport, lport->e_d_tov)) fc_lport_error(lport, fp); } @@ -1227,7 +1154,7 @@ static void fc_lport_enter_rft_id(struct fc_lport *lport) return; } - if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RFT_ID, + if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RFT_ID, fc_lport_rft_id_resp, lport, lport->e_d_tov)) fc_lport_error(lport, fp); @@ -1256,7 +1183,7 @@ static void fc_lport_enter_rpn_id(struct fc_lport *lport) return; } - if (!lport->tt.elsct_send(lport, NULL, fp, FC_NS_RPN_ID, + if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RPN_ID, fc_lport_rpn_id_resp, lport, lport->e_d_tov)) fc_lport_error(lport, fp); @@ -1275,28 +1202,21 @@ static struct fc_rport_operations fc_lport_rport_ops = { */ static void fc_lport_enter_dns(struct fc_lport *lport) { - struct fc_rport *rport; - struct fc_rport_libfc_priv *rdata; - struct fc_disc_port dp; - - dp.ids.port_id = FC_FID_DIR_SERV; - dp.ids.port_name = -1; - dp.ids.node_name = -1; - dp.ids.roles = FC_RPORT_ROLE_UNKNOWN; - dp.lp = lport; + struct fc_rport_priv *rdata; FC_LPORT_DBG(lport, "Entered DNS state from %s state\n", fc_lport_state(lport)); fc_lport_state_enter(lport, LPORT_ST_DNS); - rport = lport->tt.rport_create(&dp); - if (!rport) + mutex_lock(&lport->disc.disc_mutex); + rdata = lport->tt.rport_create(lport, FC_FID_DIR_SERV); + mutex_unlock(&lport->disc.disc_mutex); + if (!rdata) goto err; - rdata = rport->dd_data; rdata->ops = &fc_lport_rport_ops; - lport->tt.rport_login(rport); + lport->tt.rport_login(rdata); return; err: @@ -1316,7 +1236,7 @@ static void fc_lport_timeout(struct work_struct *work) mutex_lock(&lport->lp_mutex); switch (lport->state) { - case LPORT_ST_NONE: + case LPORT_ST_DISABLED: case LPORT_ST_READY: case LPORT_ST_RESET: WARN_ON(1); @@ -1360,13 +1280,13 @@ static void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp, struct fc_lport *lport = lp_arg; u8 op; + FC_LPORT_DBG(lport, "Received a LOGO %s\n", fc_els_resp_type(fp)); + if (fp == ERR_PTR(-FC_EX_CLOSED)) return; mutex_lock(&lport->lp_mutex); - FC_LPORT_DBG(lport, "Received a LOGO response\n"); - if (lport->state != LPORT_ST_LOGO) { FC_LPORT_DBG(lport, "Received a LOGO response, but in state " "%s\n", fc_lport_state(lport)); @@ -1382,7 +1302,7 @@ static void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp, op = fc_frame_payload_op(fp); if (op == ELS_LS_ACC) - fc_lport_enter_reset(lport); + fc_lport_enter_disabled(lport); else fc_lport_error(lport, fp); @@ -1415,8 +1335,8 @@ static void fc_lport_enter_logo(struct fc_lport *lport) return; } - if (!lport->tt.elsct_send(lport, NULL, fp, ELS_LOGO, fc_lport_logo_resp, - lport, lport->e_d_tov)) + if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, ELS_LOGO, + fc_lport_logo_resp, lport, lport->e_d_tov)) fc_lport_error(lport, fp); } @@ -1442,13 +1362,13 @@ static void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, unsigned int e_d_tov; u16 mfs; + FC_LPORT_DBG(lport, "Received a FLOGI %s\n", fc_els_resp_type(fp)); + if (fp == ERR_PTR(-FC_EX_CLOSED)) return; mutex_lock(&lport->lp_mutex); - FC_LPORT_DBG(lport, "Received a FLOGI response\n"); - if (lport->state != LPORT_ST_FLOGI) { FC_LPORT_DBG(lport, "Received a FLOGI response, but in state " "%s\n", fc_lport_state(lport)); @@ -1501,14 +1421,6 @@ static void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, fc_lport_enter_dns(lport); } } - - if (flp) { - csp_flags = ntohs(flp->fl_csp.sp_features); - if ((csp_flags & FC_SP_FT_FPORT) == 0) { - lport->tt.disc_start(fc_lport_disc_callback, - lport); - } - } } else { FC_LPORT_DBG(lport, "Bad FLOGI response\n"); } @@ -1539,7 +1451,7 @@ void fc_lport_enter_flogi(struct fc_lport *lport) if (!fp) return fc_lport_error(lport, fp); - if (!lport->tt.elsct_send(lport, NULL, fp, ELS_FLOGI, + if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, ELS_FLOGI, fc_lport_flogi_resp, lport, lport->e_d_tov)) fc_lport_error(lport, fp); } @@ -1550,7 +1462,7 @@ int fc_lport_config(struct fc_lport *lport) INIT_DELAYED_WORK(&lport->retry_work, fc_lport_timeout); mutex_init(&lport->lp_mutex); - fc_lport_state_enter(lport, LPORT_ST_NONE); + fc_lport_state_enter(lport, LPORT_ST_DISABLED); fc_lport_add_fc4_type(lport, FC_TYPE_FCP); fc_lport_add_fc4_type(lport, FC_TYPE_CT); @@ -1588,6 +1500,7 @@ int fc_lport_init(struct fc_lport *lport) if (lport->link_supported_speeds & FC_PORTSPEED_10GBIT) fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_10GBIT; + INIT_LIST_HEAD(&lport->ema_list); return 0; } EXPORT_SYMBOL(fc_lport_init); diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c index 7162385f..03ea674 100644 --- a/drivers/scsi/libfc/fc_rport.c +++ b/drivers/scsi/libfc/fc_rport.c @@ -57,94 +57,114 @@ struct workqueue_struct *rport_event_queue; -static void fc_rport_enter_plogi(struct fc_rport *); -static void fc_rport_enter_prli(struct fc_rport *); -static void fc_rport_enter_rtv(struct fc_rport *); -static void fc_rport_enter_ready(struct fc_rport *); -static void fc_rport_enter_logo(struct fc_rport *); - -static void fc_rport_recv_plogi_req(struct fc_rport *, +static void fc_rport_enter_plogi(struct fc_rport_priv *); +static void fc_rport_enter_prli(struct fc_rport_priv *); +static void fc_rport_enter_rtv(struct fc_rport_priv *); +static void fc_rport_enter_ready(struct fc_rport_priv *); +static void fc_rport_enter_logo(struct fc_rport_priv *); +static void fc_rport_enter_adisc(struct fc_rport_priv *); + +static void fc_rport_recv_plogi_req(struct fc_lport *, struct fc_seq *, struct fc_frame *); -static void fc_rport_recv_prli_req(struct fc_rport *, +static void fc_rport_recv_prli_req(struct fc_rport_priv *, struct fc_seq *, struct fc_frame *); -static void fc_rport_recv_prlo_req(struct fc_rport *, +static void fc_rport_recv_prlo_req(struct fc_rport_priv *, struct fc_seq *, struct fc_frame *); -static void fc_rport_recv_logo_req(struct fc_rport *, +static void fc_rport_recv_logo_req(struct fc_lport *, struct fc_seq *, struct fc_frame *); static void fc_rport_timeout(struct work_struct *); -static void fc_rport_error(struct fc_rport *, struct fc_frame *); -static void fc_rport_error_retry(struct fc_rport *, struct fc_frame *); +static void fc_rport_error(struct fc_rport_priv *, struct fc_frame *); +static void fc_rport_error_retry(struct fc_rport_priv *, struct fc_frame *); static void fc_rport_work(struct work_struct *); static const char *fc_rport_state_names[] = { - [RPORT_ST_NONE] = "None", [RPORT_ST_INIT] = "Init", [RPORT_ST_PLOGI] = "PLOGI", [RPORT_ST_PRLI] = "PRLI", [RPORT_ST_RTV] = "RTV", [RPORT_ST_READY] = "Ready", [RPORT_ST_LOGO] = "LOGO", + [RPORT_ST_ADISC] = "ADISC", + [RPORT_ST_DELETE] = "Delete", }; -static void fc_rport_rogue_destroy(struct device *dev) +/** + * fc_rport_lookup() - lookup a remote port by port_id + * @lport: Fibre Channel host port instance + * @port_id: remote port port_id to match + */ +static struct fc_rport_priv *fc_rport_lookup(const struct fc_lport *lport, + u32 port_id) { - struct fc_rport *rport = dev_to_rport(dev); - FC_RPORT_DBG(rport, "Destroying rogue rport\n"); - kfree(rport); + struct fc_rport_priv *rdata; + + list_for_each_entry(rdata, &lport->disc.rports, peers) + if (rdata->ids.port_id == port_id && + rdata->rp_state != RPORT_ST_DELETE) + return rdata; + return NULL; } -struct fc_rport *fc_rport_rogue_create(struct fc_disc_port *dp) +/** + * fc_rport_create() - Create a new remote port + * @lport: The local port that the new remote port is for + * @port_id: The port ID for the new remote port + * + * Locking note: must be called with the disc_mutex held. + */ +static struct fc_rport_priv *fc_rport_create(struct fc_lport *lport, + u32 port_id) { - struct fc_rport *rport; - struct fc_rport_libfc_priv *rdata; - rport = kzalloc(sizeof(*rport) + sizeof(*rdata), GFP_KERNEL); + struct fc_rport_priv *rdata; - if (!rport) - return NULL; + rdata = lport->tt.rport_lookup(lport, port_id); + if (rdata) + return rdata; - rdata = RPORT_TO_PRIV(rport); + rdata = kzalloc(sizeof(*rdata), GFP_KERNEL); + if (!rdata) + return NULL; - rport->dd_data = rdata; - rport->port_id = dp->ids.port_id; - rport->port_name = dp->ids.port_name; - rport->node_name = dp->ids.node_name; - rport->roles = dp->ids.roles; - rport->maxframe_size = FC_MIN_MAX_PAYLOAD; - /* - * Note: all this libfc rogue rport code will be removed for - * upstream so it fine that this is really ugly and hacky right now. - */ - device_initialize(&rport->dev); - rport->dev.release = fc_rport_rogue_destroy; + rdata->ids.node_name = -1; + rdata->ids.port_name = -1; + rdata->ids.port_id = port_id; + rdata->ids.roles = FC_RPORT_ROLE_UNKNOWN; + kref_init(&rdata->kref); mutex_init(&rdata->rp_mutex); - rdata->local_port = dp->lp; - rdata->trans_state = FC_PORTSTATE_ROGUE; + rdata->local_port = lport; rdata->rp_state = RPORT_ST_INIT; rdata->event = RPORT_EV_NONE; rdata->flags = FC_RP_FLAGS_REC_SUPPORTED; - rdata->ops = NULL; - rdata->e_d_tov = dp->lp->e_d_tov; - rdata->r_a_tov = dp->lp->r_a_tov; + rdata->e_d_tov = lport->e_d_tov; + rdata->r_a_tov = lport->r_a_tov; + rdata->maxframe_size = FC_MIN_MAX_PAYLOAD; INIT_DELAYED_WORK(&rdata->retry_work, fc_rport_timeout); INIT_WORK(&rdata->event_work, fc_rport_work); - /* - * For good measure, but not necessary as we should only - * add REAL rport to the lport list. - */ - INIT_LIST_HEAD(&rdata->peers); + if (port_id != FC_FID_DIR_SERV) + list_add(&rdata->peers, &lport->disc.rports); + return rdata; +} + +/** + * fc_rport_destroy() - free a remote port after last reference is released. + * @kref: pointer to kref inside struct fc_rport_priv + */ +static void fc_rport_destroy(struct kref *kref) +{ + struct fc_rport_priv *rdata; - return rport; + rdata = container_of(kref, struct fc_rport_priv, kref); + kfree(rdata); } /** * fc_rport_state() - return a string for the state the rport is in - * @rport: The rport whose state we want to get a string for + * @rdata: remote port private data */ -static const char *fc_rport_state(struct fc_rport *rport) +static const char *fc_rport_state(struct fc_rport_priv *rdata) { const char *cp; - struct fc_rport_libfc_priv *rdata = rport->dd_data; cp = fc_rport_state_names[rdata->rp_state]; if (!cp) @@ -191,15 +211,14 @@ static unsigned int fc_plogi_get_maxframe(struct fc_els_flogi *flp, /** * fc_rport_state_enter() - Change the rport's state - * @rport: The rport whose state should change + * @rdata: The rport whose state should change * @new: The new state of the rport * * Locking Note: Called with the rport lock held */ -static void fc_rport_state_enter(struct fc_rport *rport, +static void fc_rport_state_enter(struct fc_rport_priv *rdata, enum fc_rport_state new) { - struct fc_rport_libfc_priv *rdata = rport->dd_data; if (rdata->rp_state != new) rdata->retries = 0; rdata->rp_state = new; @@ -208,147 +227,187 @@ static void fc_rport_state_enter(struct fc_rport *rport, static void fc_rport_work(struct work_struct *work) { u32 port_id; - struct fc_rport_libfc_priv *rdata = - container_of(work, struct fc_rport_libfc_priv, event_work); + struct fc_rport_priv *rdata = + container_of(work, struct fc_rport_priv, event_work); + struct fc_rport_libfc_priv *rp; enum fc_rport_event event; - enum fc_rport_trans_state trans_state; struct fc_lport *lport = rdata->local_port; struct fc_rport_operations *rport_ops; - struct fc_rport *rport = PRIV_TO_RPORT(rdata); + struct fc_rport_identifiers ids; + struct fc_rport *rport; mutex_lock(&rdata->rp_mutex); event = rdata->event; rport_ops = rdata->ops; + rport = rdata->rport; - if (event == RPORT_EV_CREATED) { - struct fc_rport *new_rport; - struct fc_rport_libfc_priv *new_rdata; - struct fc_rport_identifiers ids; + FC_RPORT_DBG(rdata, "work event %u\n", event); - ids.port_id = rport->port_id; - ids.roles = rport->roles; - ids.port_name = rport->port_name; - ids.node_name = rport->node_name; + switch (event) { + case RPORT_EV_READY: + ids = rdata->ids; + rdata->event = RPORT_EV_NONE; + kref_get(&rdata->kref); + mutex_unlock(&rdata->rp_mutex); + if (!rport) + rport = fc_remote_port_add(lport->host, 0, &ids); + if (!rport) { + FC_RPORT_DBG(rdata, "Failed to add the rport\n"); + lport->tt.rport_logoff(rdata); + kref_put(&rdata->kref, lport->tt.rport_destroy); + return; + } + mutex_lock(&rdata->rp_mutex); + if (rdata->rport) + FC_RPORT_DBG(rdata, "rport already allocated\n"); + rdata->rport = rport; + rport->maxframe_size = rdata->maxframe_size; + rport->supported_classes = rdata->supported_classes; + + rp = rport->dd_data; + rp->local_port = lport; + rp->rp_state = rdata->rp_state; + rp->flags = rdata->flags; + rp->e_d_tov = rdata->e_d_tov; + rp->r_a_tov = rdata->r_a_tov; mutex_unlock(&rdata->rp_mutex); - new_rport = fc_remote_port_add(lport->host, 0, &ids); - if (new_rport) { - /* - * Switch from the rogue rport to the rport - * returned by the FC class. - */ - new_rport->maxframe_size = rport->maxframe_size; - - new_rdata = new_rport->dd_data; - new_rdata->e_d_tov = rdata->e_d_tov; - new_rdata->r_a_tov = rdata->r_a_tov; - new_rdata->ops = rdata->ops; - new_rdata->local_port = rdata->local_port; - new_rdata->flags = FC_RP_FLAGS_REC_SUPPORTED; - new_rdata->trans_state = FC_PORTSTATE_REAL; - mutex_init(&new_rdata->rp_mutex); - INIT_DELAYED_WORK(&new_rdata->retry_work, - fc_rport_timeout); - INIT_LIST_HEAD(&new_rdata->peers); - INIT_WORK(&new_rdata->event_work, fc_rport_work); - - fc_rport_state_enter(new_rport, RPORT_ST_READY); - } else { - printk(KERN_WARNING "libfc: Failed to allocate " - " memory for rport (%6x)\n", ids.port_id); - event = RPORT_EV_FAILED; + if (rport_ops && rport_ops->event_callback) { + FC_RPORT_DBG(rdata, "callback ev %d\n", event); + rport_ops->event_callback(lport, rdata, event); } - if (rport->port_id != FC_FID_DIR_SERV) - if (rport_ops->event_callback) - rport_ops->event_callback(lport, rport, - RPORT_EV_FAILED); - put_device(&rport->dev); - rport = new_rport; - rdata = new_rport->dd_data; - if (rport_ops->event_callback) - rport_ops->event_callback(lport, rport, event); - } else if ((event == RPORT_EV_FAILED) || - (event == RPORT_EV_LOGO) || - (event == RPORT_EV_STOP)) { - trans_state = rdata->trans_state; + kref_put(&rdata->kref, lport->tt.rport_destroy); + break; + + case RPORT_EV_FAILED: + case RPORT_EV_LOGO: + case RPORT_EV_STOP: + port_id = rdata->ids.port_id; mutex_unlock(&rdata->rp_mutex); - if (rport_ops->event_callback) - rport_ops->event_callback(lport, rport, event); - if (trans_state == FC_PORTSTATE_ROGUE) - put_device(&rport->dev); - else { - port_id = rport->port_id; + + if (port_id != FC_FID_DIR_SERV) { + mutex_lock(&lport->disc.disc_mutex); + list_del(&rdata->peers); + mutex_unlock(&lport->disc.disc_mutex); + } + + if (rport_ops && rport_ops->event_callback) { + FC_RPORT_DBG(rdata, "callback ev %d\n", event); + rport_ops->event_callback(lport, rdata, event); + } + cancel_delayed_work_sync(&rdata->retry_work); + + /* + * Reset any outstanding exchanges before freeing rport. + */ + lport->tt.exch_mgr_reset(lport, 0, port_id); + lport->tt.exch_mgr_reset(lport, port_id, 0); + + if (rport) { + rp = rport->dd_data; + rp->rp_state = RPORT_ST_DELETE; + mutex_lock(&rdata->rp_mutex); + rdata->rport = NULL; + mutex_unlock(&rdata->rp_mutex); fc_remote_port_delete(rport); - lport->tt.exch_mgr_reset(lport, 0, port_id); - lport->tt.exch_mgr_reset(lport, port_id, 0); } - } else + kref_put(&rdata->kref, lport->tt.rport_destroy); + break; + + default: mutex_unlock(&rdata->rp_mutex); + break; + } } /** * fc_rport_login() - Start the remote port login state machine - * @rport: Fibre Channel remote port + * @rdata: private remote port * * Locking Note: Called without the rport lock held. This * function will hold the rport lock, call an _enter_* * function and then unlock the rport. + * + * This indicates the intent to be logged into the remote port. + * If it appears we are already logged in, ADISC is used to verify + * the setup. */ -int fc_rport_login(struct fc_rport *rport) +int fc_rport_login(struct fc_rport_priv *rdata) { - struct fc_rport_libfc_priv *rdata = rport->dd_data; - mutex_lock(&rdata->rp_mutex); - FC_RPORT_DBG(rport, "Login to port\n"); - - fc_rport_enter_plogi(rport); - + switch (rdata->rp_state) { + case RPORT_ST_READY: + FC_RPORT_DBG(rdata, "ADISC port\n"); + fc_rport_enter_adisc(rdata); + break; + default: + FC_RPORT_DBG(rdata, "Login to port\n"); + fc_rport_enter_plogi(rdata); + break; + } mutex_unlock(&rdata->rp_mutex); return 0; } /** + * fc_rport_enter_delete() - schedule a remote port to be deleted. + * @rdata: private remote port + * @event: event to report as the reason for deletion + * + * Locking Note: Called with the rport lock held. + * + * Allow state change into DELETE only once. + * + * Call queue_work only if there's no event already pending. + * Set the new event so that the old pending event will not occur. + * Since we have the mutex, even if fc_rport_work() is already started, + * it'll see the new event. + */ +static void fc_rport_enter_delete(struct fc_rport_priv *rdata, + enum fc_rport_event event) +{ + if (rdata->rp_state == RPORT_ST_DELETE) + return; + + FC_RPORT_DBG(rdata, "Delete port\n"); + + fc_rport_state_enter(rdata, RPORT_ST_DELETE); + + if (rdata->event == RPORT_EV_NONE) + queue_work(rport_event_queue, &rdata->event_work); + rdata->event = event; +} + +/** * fc_rport_logoff() - Logoff and remove an rport - * @rport: Fibre Channel remote port to be removed + * @rdata: private remote port * * Locking Note: Called without the rport lock held. This * function will hold the rport lock, call an _enter_* * function and then unlock the rport. */ -int fc_rport_logoff(struct fc_rport *rport) +int fc_rport_logoff(struct fc_rport_priv *rdata) { - struct fc_rport_libfc_priv *rdata = rport->dd_data; - mutex_lock(&rdata->rp_mutex); - FC_RPORT_DBG(rport, "Remove port\n"); + FC_RPORT_DBG(rdata, "Remove port\n"); - if (rdata->rp_state == RPORT_ST_NONE) { - FC_RPORT_DBG(rport, "Port in NONE state, not removing\n"); + if (rdata->rp_state == RPORT_ST_DELETE) { + FC_RPORT_DBG(rdata, "Port in Delete state, not removing\n"); mutex_unlock(&rdata->rp_mutex); goto out; } - fc_rport_enter_logo(rport); + fc_rport_enter_logo(rdata); /* - * Change the state to NONE so that we discard + * Change the state to Delete so that we discard * the response. */ - fc_rport_state_enter(rport, RPORT_ST_NONE); - - mutex_unlock(&rdata->rp_mutex); - - cancel_delayed_work_sync(&rdata->retry_work); - - mutex_lock(&rdata->rp_mutex); - - rdata->event = RPORT_EV_STOP; - queue_work(rport_event_queue, &rdata->event_work); - + fc_rport_enter_delete(rdata, RPORT_EV_STOP); mutex_unlock(&rdata->rp_mutex); out: @@ -357,26 +416,25 @@ out: /** * fc_rport_enter_ready() - The rport is ready - * @rport: Fibre Channel remote port that is ready + * @rdata: private remote port * * Locking Note: The rport lock is expected to be held before calling * this routine. */ -static void fc_rport_enter_ready(struct fc_rport *rport) +static void fc_rport_enter_ready(struct fc_rport_priv *rdata) { - struct fc_rport_libfc_priv *rdata = rport->dd_data; - - fc_rport_state_enter(rport, RPORT_ST_READY); + fc_rport_state_enter(rdata, RPORT_ST_READY); - FC_RPORT_DBG(rport, "Port is Ready\n"); + FC_RPORT_DBG(rdata, "Port is Ready\n"); - rdata->event = RPORT_EV_CREATED; - queue_work(rport_event_queue, &rdata->event_work); + if (rdata->event == RPORT_EV_NONE) + queue_work(rport_event_queue, &rdata->event_work); + rdata->event = RPORT_EV_READY; } /** * fc_rport_timeout() - Handler for the retry_work timer. - * @work: The work struct of the fc_rport_libfc_priv + * @work: The work struct of the fc_rport_priv * * Locking Note: Called without the rport lock held. This * function will hold the rport lock, call an _enter_* @@ -384,63 +442,63 @@ static void fc_rport_enter_ready(struct fc_rport *rport) */ static void fc_rport_timeout(struct work_struct *work) { - struct fc_rport_libfc_priv *rdata = - container_of(work, struct fc_rport_libfc_priv, retry_work.work); - struct fc_rport *rport = PRIV_TO_RPORT(rdata); + struct fc_rport_priv *rdata = + container_of(work, struct fc_rport_priv, retry_work.work); mutex_lock(&rdata->rp_mutex); switch (rdata->rp_state) { case RPORT_ST_PLOGI: - fc_rport_enter_plogi(rport); + fc_rport_enter_plogi(rdata); break; case RPORT_ST_PRLI: - fc_rport_enter_prli(rport); + fc_rport_enter_prli(rdata); break; case RPORT_ST_RTV: - fc_rport_enter_rtv(rport); + fc_rport_enter_rtv(rdata); break; case RPORT_ST_LOGO: - fc_rport_enter_logo(rport); + fc_rport_enter_logo(rdata); + break; + case RPORT_ST_ADISC: + fc_rport_enter_adisc(rdata); break; case RPORT_ST_READY: case RPORT_ST_INIT: - case RPORT_ST_NONE: + case RPORT_ST_DELETE: break; } mutex_unlock(&rdata->rp_mutex); - put_device(&rport->dev); } /** * fc_rport_error() - Error handler, called once retries have been exhausted - * @rport: The fc_rport object + * @rdata: private remote port * @fp: The frame pointer * * Locking Note: The rport lock is expected to be held before * calling this routine */ -static void fc_rport_error(struct fc_rport *rport, struct fc_frame *fp) +static void fc_rport_error(struct fc_rport_priv *rdata, struct fc_frame *fp) { - struct fc_rport_libfc_priv *rdata = rport->dd_data; - - FC_RPORT_DBG(rport, "Error %ld in state %s, retries %d\n", - PTR_ERR(fp), fc_rport_state(rport), rdata->retries); + FC_RPORT_DBG(rdata, "Error %ld in state %s, retries %d\n", + IS_ERR(fp) ? -PTR_ERR(fp) : 0, + fc_rport_state(rdata), rdata->retries); switch (rdata->rp_state) { case RPORT_ST_PLOGI: - case RPORT_ST_PRLI: case RPORT_ST_LOGO: - rdata->event = RPORT_EV_FAILED; - fc_rport_state_enter(rport, RPORT_ST_NONE); - queue_work(rport_event_queue, - &rdata->event_work); + fc_rport_enter_delete(rdata, RPORT_EV_FAILED); break; case RPORT_ST_RTV: - fc_rport_enter_ready(rport); + fc_rport_enter_ready(rdata); break; - case RPORT_ST_NONE: + case RPORT_ST_PRLI: + case RPORT_ST_ADISC: + fc_rport_enter_logo(rdata); + break; + case RPORT_ST_DELETE: case RPORT_ST_READY: case RPORT_ST_INIT: break; @@ -449,7 +507,7 @@ static void fc_rport_error(struct fc_rport *rport, struct fc_frame *fp) /** * fc_rport_error_retry() - Error handler when retries are desired - * @rport: The fc_rport object + * @rdata: private remote port data * @fp: The frame pointer * * If the error was an exchange timeout retry immediately, @@ -458,45 +516,43 @@ static void fc_rport_error(struct fc_rport *rport, struct fc_frame *fp) * Locking Note: The rport lock is expected to be held before * calling this routine */ -static void fc_rport_error_retry(struct fc_rport *rport, struct fc_frame *fp) +static void fc_rport_error_retry(struct fc_rport_priv *rdata, + struct fc_frame *fp) { - struct fc_rport_libfc_priv *rdata = rport->dd_data; unsigned long delay = FC_DEF_E_D_TOV; /* make sure this isn't an FC_EX_CLOSED error, never retry those */ if (PTR_ERR(fp) == -FC_EX_CLOSED) - return fc_rport_error(rport, fp); + return fc_rport_error(rdata, fp); if (rdata->retries < rdata->local_port->max_rport_retry_count) { - FC_RPORT_DBG(rport, "Error %ld in state %s, retrying\n", - PTR_ERR(fp), fc_rport_state(rport)); + FC_RPORT_DBG(rdata, "Error %ld in state %s, retrying\n", + PTR_ERR(fp), fc_rport_state(rdata)); rdata->retries++; /* no additional delay on exchange timeouts */ if (PTR_ERR(fp) == -FC_EX_TIMEOUT) delay = 0; - get_device(&rport->dev); schedule_delayed_work(&rdata->retry_work, delay); return; } - return fc_rport_error(rport, fp); + return fc_rport_error(rdata, fp); } /** * fc_rport_plogi_recv_resp() - Handle incoming ELS PLOGI response * @sp: current sequence in the PLOGI exchange * @fp: response frame - * @rp_arg: Fibre Channel remote port + * @rdata_arg: private remote port data * * Locking Note: This function will be called without the rport lock * held, but it will lock, call an _enter_* function or fc_rport_error * and then unlock the rport. */ static void fc_rport_plogi_resp(struct fc_seq *sp, struct fc_frame *fp, - void *rp_arg) + void *rdata_arg) { - struct fc_rport *rport = rp_arg; - struct fc_rport_libfc_priv *rdata = rport->dd_data; + struct fc_rport_priv *rdata = rdata_arg; struct fc_lport *lport = rdata->local_port; struct fc_els_flogi *plp = NULL; unsigned int tov; @@ -506,26 +562,26 @@ static void fc_rport_plogi_resp(struct fc_seq *sp, struct fc_frame *fp, mutex_lock(&rdata->rp_mutex); - FC_RPORT_DBG(rport, "Received a PLOGI response\n"); + FC_RPORT_DBG(rdata, "Received a PLOGI %s\n", fc_els_resp_type(fp)); if (rdata->rp_state != RPORT_ST_PLOGI) { - FC_RPORT_DBG(rport, "Received a PLOGI response, but in state " - "%s\n", fc_rport_state(rport)); + FC_RPORT_DBG(rdata, "Received a PLOGI response, but in state " + "%s\n", fc_rport_state(rdata)); if (IS_ERR(fp)) goto err; goto out; } if (IS_ERR(fp)) { - fc_rport_error_retry(rport, fp); + fc_rport_error_retry(rdata, fp); goto err; } op = fc_frame_payload_op(fp); if (op == ELS_LS_ACC && (plp = fc_frame_payload_get(fp, sizeof(*plp))) != NULL) { - rport->port_name = get_unaligned_be64(&plp->fl_wwpn); - rport->node_name = get_unaligned_be64(&plp->fl_wwnn); + rdata->ids.port_name = get_unaligned_be64(&plp->fl_wwpn); + rdata->ids.node_name = get_unaligned_be64(&plp->fl_wwnn); tov = ntohl(plp->fl_csp.sp_e_d_tov); if (ntohs(plp->fl_csp.sp_features) & FC_SP_FT_EDTR) @@ -537,75 +593,64 @@ static void fc_rport_plogi_resp(struct fc_seq *sp, struct fc_frame *fp, if (cssp_seq < csp_seq) csp_seq = cssp_seq; rdata->max_seq = csp_seq; - rport->maxframe_size = - fc_plogi_get_maxframe(plp, lport->mfs); - - /* - * If the rport is one of the well known addresses - * we skip PRLI and RTV and go straight to READY. - */ - if (rport->port_id >= FC_FID_DOM_MGR) - fc_rport_enter_ready(rport); - else - fc_rport_enter_prli(rport); + rdata->maxframe_size = fc_plogi_get_maxframe(plp, lport->mfs); + fc_rport_enter_prli(rdata); } else - fc_rport_error_retry(rport, fp); + fc_rport_error_retry(rdata, fp); out: fc_frame_free(fp); err: mutex_unlock(&rdata->rp_mutex); - put_device(&rport->dev); + kref_put(&rdata->kref, rdata->local_port->tt.rport_destroy); } /** * fc_rport_enter_plogi() - Send Port Login (PLOGI) request to peer - * @rport: Fibre Channel remote port to send PLOGI to + * @rdata: private remote port data * * Locking Note: The rport lock is expected to be held before calling * this routine. */ -static void fc_rport_enter_plogi(struct fc_rport *rport) +static void fc_rport_enter_plogi(struct fc_rport_priv *rdata) { - struct fc_rport_libfc_priv *rdata = rport->dd_data; struct fc_lport *lport = rdata->local_port; struct fc_frame *fp; - FC_RPORT_DBG(rport, "Port entered PLOGI state from %s state\n", - fc_rport_state(rport)); + FC_RPORT_DBG(rdata, "Port entered PLOGI state from %s state\n", + fc_rport_state(rdata)); - fc_rport_state_enter(rport, RPORT_ST_PLOGI); + fc_rport_state_enter(rdata, RPORT_ST_PLOGI); - rport->maxframe_size = FC_MIN_MAX_PAYLOAD; + rdata->maxframe_size = FC_MIN_MAX_PAYLOAD; fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); if (!fp) { - fc_rport_error_retry(rport, fp); + fc_rport_error_retry(rdata, fp); return; } rdata->e_d_tov = lport->e_d_tov; - if (!lport->tt.elsct_send(lport, rport, fp, ELS_PLOGI, - fc_rport_plogi_resp, rport, lport->e_d_tov)) - fc_rport_error_retry(rport, fp); + if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, ELS_PLOGI, + fc_rport_plogi_resp, rdata, lport->e_d_tov)) + fc_rport_error_retry(rdata, fp); else - get_device(&rport->dev); + kref_get(&rdata->kref); } /** * fc_rport_prli_resp() - Process Login (PRLI) response handler * @sp: current sequence in the PRLI exchange * @fp: response frame - * @rp_arg: Fibre Channel remote port + * @rdata_arg: private remote port data * * Locking Note: This function will be called without the rport lock * held, but it will lock, call an _enter_* function or fc_rport_error * and then unlock the rport. */ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp, - void *rp_arg) + void *rdata_arg) { - struct fc_rport *rport = rp_arg; - struct fc_rport_libfc_priv *rdata = rport->dd_data; + struct fc_rport_priv *rdata = rdata_arg; struct { struct fc_els_prli prli; struct fc_els_spp spp; @@ -616,21 +661,24 @@ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp, mutex_lock(&rdata->rp_mutex); - FC_RPORT_DBG(rport, "Received a PRLI response\n"); + FC_RPORT_DBG(rdata, "Received a PRLI %s\n", fc_els_resp_type(fp)); if (rdata->rp_state != RPORT_ST_PRLI) { - FC_RPORT_DBG(rport, "Received a PRLI response, but in state " - "%s\n", fc_rport_state(rport)); + FC_RPORT_DBG(rdata, "Received a PRLI response, but in state " + "%s\n", fc_rport_state(rdata)); if (IS_ERR(fp)) goto err; goto out; } if (IS_ERR(fp)) { - fc_rport_error_retry(rport, fp); + fc_rport_error_retry(rdata, fp); goto err; } + /* reinitialize remote port roles */ + rdata->ids.roles = FC_RPORT_ROLE_UNKNOWN; + op = fc_frame_payload_op(fp); if (op == ELS_LS_ACC) { pp = fc_frame_payload_get(fp, sizeof(*pp)); @@ -640,90 +688,82 @@ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp, rdata->flags |= FC_RP_FLAGS_RETRY; } - rport->supported_classes = FC_COS_CLASS3; + rdata->supported_classes = FC_COS_CLASS3; if (fcp_parm & FCP_SPPF_INIT_FCN) roles |= FC_RPORT_ROLE_FCP_INITIATOR; if (fcp_parm & FCP_SPPF_TARG_FCN) roles |= FC_RPORT_ROLE_FCP_TARGET; - rport->roles = roles; - fc_rport_enter_rtv(rport); + rdata->ids.roles = roles; + fc_rport_enter_rtv(rdata); } else { - FC_RPORT_DBG(rport, "Bad ELS response for PRLI command\n"); - rdata->event = RPORT_EV_FAILED; - fc_rport_state_enter(rport, RPORT_ST_NONE); - queue_work(rport_event_queue, &rdata->event_work); + FC_RPORT_DBG(rdata, "Bad ELS response for PRLI command\n"); + fc_rport_enter_delete(rdata, RPORT_EV_FAILED); } out: fc_frame_free(fp); err: mutex_unlock(&rdata->rp_mutex); - put_device(&rport->dev); + kref_put(&rdata->kref, rdata->local_port->tt.rport_destroy); } /** * fc_rport_logo_resp() - Logout (LOGO) response handler * @sp: current sequence in the LOGO exchange * @fp: response frame - * @rp_arg: Fibre Channel remote port + * @rdata_arg: private remote port data * * Locking Note: This function will be called without the rport lock * held, but it will lock, call an _enter_* function or fc_rport_error * and then unlock the rport. */ static void fc_rport_logo_resp(struct fc_seq *sp, struct fc_frame *fp, - void *rp_arg) + void *rdata_arg) { - struct fc_rport *rport = rp_arg; - struct fc_rport_libfc_priv *rdata = rport->dd_data; + struct fc_rport_priv *rdata = rdata_arg; u8 op; mutex_lock(&rdata->rp_mutex); - FC_RPORT_DBG(rport, "Received a LOGO response\n"); + FC_RPORT_DBG(rdata, "Received a LOGO %s\n", fc_els_resp_type(fp)); if (rdata->rp_state != RPORT_ST_LOGO) { - FC_RPORT_DBG(rport, "Received a LOGO response, but in state " - "%s\n", fc_rport_state(rport)); + FC_RPORT_DBG(rdata, "Received a LOGO response, but in state " + "%s\n", fc_rport_state(rdata)); if (IS_ERR(fp)) goto err; goto out; } if (IS_ERR(fp)) { - fc_rport_error_retry(rport, fp); + fc_rport_error_retry(rdata, fp); goto err; } op = fc_frame_payload_op(fp); - if (op == ELS_LS_ACC) { - fc_rport_enter_rtv(rport); - } else { - FC_RPORT_DBG(rport, "Bad ELS response for LOGO command\n"); - rdata->event = RPORT_EV_LOGO; - fc_rport_state_enter(rport, RPORT_ST_NONE); - queue_work(rport_event_queue, &rdata->event_work); - } + if (op != ELS_LS_ACC) + FC_RPORT_DBG(rdata, "Bad ELS response op %x for LOGO command\n", + op); + fc_rport_enter_delete(rdata, RPORT_EV_LOGO); out: fc_frame_free(fp); err: mutex_unlock(&rdata->rp_mutex); - put_device(&rport->dev); + kref_put(&rdata->kref, rdata->local_port->tt.rport_destroy); } /** * fc_rport_enter_prli() - Send Process Login (PRLI) request to peer - * @rport: Fibre Channel remote port to send PRLI to + * @rdata: private remote port data * * Locking Note: The rport lock is expected to be held before calling * this routine. */ -static void fc_rport_enter_prli(struct fc_rport *rport) +static void fc_rport_enter_prli(struct fc_rport_priv *rdata) { - struct fc_rport_libfc_priv *rdata = rport->dd_data; struct fc_lport *lport = rdata->local_port; struct { struct fc_els_prli prli; @@ -731,29 +771,38 @@ static void fc_rport_enter_prli(struct fc_rport *rport) } *pp; struct fc_frame *fp; - FC_RPORT_DBG(rport, "Port entered PRLI state from %s state\n", - fc_rport_state(rport)); + /* + * If the rport is one of the well known addresses + * we skip PRLI and RTV and go straight to READY. + */ + if (rdata->ids.port_id >= FC_FID_DOM_MGR) { + fc_rport_enter_ready(rdata); + return; + } + + FC_RPORT_DBG(rdata, "Port entered PRLI state from %s state\n", + fc_rport_state(rdata)); - fc_rport_state_enter(rport, RPORT_ST_PRLI); + fc_rport_state_enter(rdata, RPORT_ST_PRLI); fp = fc_frame_alloc(lport, sizeof(*pp)); if (!fp) { - fc_rport_error_retry(rport, fp); + fc_rport_error_retry(rdata, fp); return; } - if (!lport->tt.elsct_send(lport, rport, fp, ELS_PRLI, - fc_rport_prli_resp, rport, lport->e_d_tov)) - fc_rport_error_retry(rport, fp); + if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, ELS_PRLI, + fc_rport_prli_resp, rdata, lport->e_d_tov)) + fc_rport_error_retry(rdata, fp); else - get_device(&rport->dev); + kref_get(&rdata->kref); } /** * fc_rport_els_rtv_resp() - Request Timeout Value response handler * @sp: current sequence in the RTV exchange * @fp: response frame - * @rp_arg: Fibre Channel remote port + * @rdata_arg: private remote port data * * Many targets don't seem to support this. * @@ -762,26 +811,25 @@ static void fc_rport_enter_prli(struct fc_rport *rport) * and then unlock the rport. */ static void fc_rport_rtv_resp(struct fc_seq *sp, struct fc_frame *fp, - void *rp_arg) + void *rdata_arg) { - struct fc_rport *rport = rp_arg; - struct fc_rport_libfc_priv *rdata = rport->dd_data; + struct fc_rport_priv *rdata = rdata_arg; u8 op; mutex_lock(&rdata->rp_mutex); - FC_RPORT_DBG(rport, "Received a RTV response\n"); + FC_RPORT_DBG(rdata, "Received a RTV %s\n", fc_els_resp_type(fp)); if (rdata->rp_state != RPORT_ST_RTV) { - FC_RPORT_DBG(rport, "Received a RTV response, but in state " - "%s\n", fc_rport_state(rport)); + FC_RPORT_DBG(rdata, "Received a RTV response, but in state " + "%s\n", fc_rport_state(rdata)); if (IS_ERR(fp)) goto err; goto out; } if (IS_ERR(fp)) { - fc_rport_error(rport, fp); + fc_rport_error(rdata, fp); goto err; } @@ -807,184 +855,376 @@ static void fc_rport_rtv_resp(struct fc_seq *sp, struct fc_frame *fp, } } - fc_rport_enter_ready(rport); + fc_rport_enter_ready(rdata); out: fc_frame_free(fp); err: mutex_unlock(&rdata->rp_mutex); - put_device(&rport->dev); + kref_put(&rdata->kref, rdata->local_port->tt.rport_destroy); } /** * fc_rport_enter_rtv() - Send Request Timeout Value (RTV) request to peer - * @rport: Fibre Channel remote port to send RTV to + * @rdata: private remote port data * * Locking Note: The rport lock is expected to be held before calling * this routine. */ -static void fc_rport_enter_rtv(struct fc_rport *rport) +static void fc_rport_enter_rtv(struct fc_rport_priv *rdata) { struct fc_frame *fp; - struct fc_rport_libfc_priv *rdata = rport->dd_data; struct fc_lport *lport = rdata->local_port; - FC_RPORT_DBG(rport, "Port entered RTV state from %s state\n", - fc_rport_state(rport)); + FC_RPORT_DBG(rdata, "Port entered RTV state from %s state\n", + fc_rport_state(rdata)); - fc_rport_state_enter(rport, RPORT_ST_RTV); + fc_rport_state_enter(rdata, RPORT_ST_RTV); fp = fc_frame_alloc(lport, sizeof(struct fc_els_rtv)); if (!fp) { - fc_rport_error_retry(rport, fp); + fc_rport_error_retry(rdata, fp); return; } - if (!lport->tt.elsct_send(lport, rport, fp, ELS_RTV, - fc_rport_rtv_resp, rport, lport->e_d_tov)) - fc_rport_error_retry(rport, fp); + if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, ELS_RTV, + fc_rport_rtv_resp, rdata, lport->e_d_tov)) + fc_rport_error_retry(rdata, fp); else - get_device(&rport->dev); + kref_get(&rdata->kref); } /** * fc_rport_enter_logo() - Send Logout (LOGO) request to peer - * @rport: Fibre Channel remote port to send LOGO to + * @rdata: private remote port data * * Locking Note: The rport lock is expected to be held before calling * this routine. */ -static void fc_rport_enter_logo(struct fc_rport *rport) +static void fc_rport_enter_logo(struct fc_rport_priv *rdata) { - struct fc_rport_libfc_priv *rdata = rport->dd_data; struct fc_lport *lport = rdata->local_port; struct fc_frame *fp; - FC_RPORT_DBG(rport, "Port entered LOGO state from %s state\n", - fc_rport_state(rport)); + FC_RPORT_DBG(rdata, "Port entered LOGO state from %s state\n", + fc_rport_state(rdata)); - fc_rport_state_enter(rport, RPORT_ST_LOGO); + fc_rport_state_enter(rdata, RPORT_ST_LOGO); fp = fc_frame_alloc(lport, sizeof(struct fc_els_logo)); if (!fp) { - fc_rport_error_retry(rport, fp); + fc_rport_error_retry(rdata, fp); return; } - if (!lport->tt.elsct_send(lport, rport, fp, ELS_LOGO, - fc_rport_logo_resp, rport, lport->e_d_tov)) - fc_rport_error_retry(rport, fp); + if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, ELS_LOGO, + fc_rport_logo_resp, rdata, lport->e_d_tov)) + fc_rport_error_retry(rdata, fp); else - get_device(&rport->dev); + kref_get(&rdata->kref); } - /** - * fc_rport_recv_req() - Receive a request from a rport - * @sp: current sequence in the PLOGI exchange + * fc_rport_els_adisc_resp() - Address Discovery response handler + * @sp: current sequence in the ADISC exchange * @fp: response frame - * @rp_arg: Fibre Channel remote port + * @rdata_arg: remote port private. * - * Locking Note: Called without the rport lock held. This - * function will hold the rport lock, call an _enter_* - * function and then unlock the rport. + * Locking Note: This function will be called without the rport lock + * held, but it will lock, call an _enter_* function or fc_rport_error + * and then unlock the rport. */ -void fc_rport_recv_req(struct fc_seq *sp, struct fc_frame *fp, - struct fc_rport *rport) +static void fc_rport_adisc_resp(struct fc_seq *sp, struct fc_frame *fp, + void *rdata_arg) +{ + struct fc_rport_priv *rdata = rdata_arg; + struct fc_els_adisc *adisc; + u8 op; + + mutex_lock(&rdata->rp_mutex); + + FC_RPORT_DBG(rdata, "Received a ADISC response\n"); + + if (rdata->rp_state != RPORT_ST_ADISC) { + FC_RPORT_DBG(rdata, "Received a ADISC resp but in state %s\n", + fc_rport_state(rdata)); + if (IS_ERR(fp)) + goto err; + goto out; + } + + if (IS_ERR(fp)) { + fc_rport_error(rdata, fp); + goto err; + } + + /* + * If address verification failed. Consider us logged out of the rport. + * Since the rport is still in discovery, we want to be + * logged in, so go to PLOGI state. Otherwise, go back to READY. + */ + op = fc_frame_payload_op(fp); + adisc = fc_frame_payload_get(fp, sizeof(*adisc)); + if (op != ELS_LS_ACC || !adisc || + ntoh24(adisc->adisc_port_id) != rdata->ids.port_id || + get_unaligned_be64(&adisc->adisc_wwpn) != rdata->ids.port_name || + get_unaligned_be64(&adisc->adisc_wwnn) != rdata->ids.node_name) { + FC_RPORT_DBG(rdata, "ADISC error or mismatch\n"); + fc_rport_enter_plogi(rdata); + } else { + FC_RPORT_DBG(rdata, "ADISC OK\n"); + fc_rport_enter_ready(rdata); + } +out: + fc_frame_free(fp); +err: + mutex_unlock(&rdata->rp_mutex); + kref_put(&rdata->kref, rdata->local_port->tt.rport_destroy); +} + +/** + * fc_rport_enter_adisc() - Send Address Discover (ADISC) request to peer + * @rdata: remote port private data + * + * Locking Note: The rport lock is expected to be held before calling + * this routine. + */ +static void fc_rport_enter_adisc(struct fc_rport_priv *rdata) { - struct fc_rport_libfc_priv *rdata = rport->dd_data; struct fc_lport *lport = rdata->local_port; + struct fc_frame *fp; + + FC_RPORT_DBG(rdata, "sending ADISC from %s state\n", + fc_rport_state(rdata)); + fc_rport_state_enter(rdata, RPORT_ST_ADISC); + + fp = fc_frame_alloc(lport, sizeof(struct fc_els_adisc)); + if (!fp) { + fc_rport_error_retry(rdata, fp); + return; + } + if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, ELS_ADISC, + fc_rport_adisc_resp, rdata, lport->e_d_tov)) + fc_rport_error_retry(rdata, fp); + else + kref_get(&rdata->kref); +} + +/** + * fc_rport_recv_adisc_req() - Handle incoming Address Discovery (ADISC) Request + * @rdata: remote port private + * @sp: current sequence in the ADISC exchange + * @in_fp: ADISC request frame + * + * Locking Note: Called with the lport and rport locks held. + */ +static void fc_rport_recv_adisc_req(struct fc_rport_priv *rdata, + struct fc_seq *sp, struct fc_frame *in_fp) +{ + struct fc_lport *lport = rdata->local_port; + struct fc_frame *fp; + struct fc_exch *ep = fc_seq_exch(sp); + struct fc_els_adisc *adisc; + struct fc_seq_els_data rjt_data; + u32 f_ctl; + + FC_RPORT_DBG(rdata, "Received ADISC request\n"); + + adisc = fc_frame_payload_get(in_fp, sizeof(*adisc)); + if (!adisc) { + rjt_data.fp = NULL; + rjt_data.reason = ELS_RJT_PROT; + rjt_data.explan = ELS_EXPL_INV_LEN; + lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); + goto drop; + } + + fp = fc_frame_alloc(lport, sizeof(*adisc)); + if (!fp) + goto drop; + fc_adisc_fill(lport, fp); + adisc = fc_frame_payload_get(fp, sizeof(*adisc)); + adisc->adisc_cmd = ELS_LS_ACC; + sp = lport->tt.seq_start_next(sp); + f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT; + fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, + FC_TYPE_ELS, f_ctl, 0); + lport->tt.seq_send(lport, sp, fp); +drop: + fc_frame_free(in_fp); +} + +/** + * fc_rport_recv_els_req() - handle a validated ELS request. + * @lport: Fibre Channel local port + * @sp: current sequence in the PLOGI exchange + * @fp: response frame + * + * Handle incoming ELS requests that require port login. + * The ELS opcode has already been validated by the caller. + * + * Locking Note: Called with the lport lock held. + */ +static void fc_rport_recv_els_req(struct fc_lport *lport, + struct fc_seq *sp, struct fc_frame *fp) +{ + struct fc_rport_priv *rdata; struct fc_frame_header *fh; struct fc_seq_els_data els_data; - u8 op; - - mutex_lock(&rdata->rp_mutex); els_data.fp = NULL; - els_data.explan = ELS_EXPL_NONE; - els_data.reason = ELS_RJT_NONE; + els_data.reason = ELS_RJT_UNAB; + els_data.explan = ELS_EXPL_PLOGI_REQD; fh = fc_frame_header_get(fp); - if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && fh->fh_type == FC_TYPE_ELS) { - op = fc_frame_payload_op(fp); - switch (op) { - case ELS_PLOGI: - fc_rport_recv_plogi_req(rport, sp, fp); - break; - case ELS_PRLI: - fc_rport_recv_prli_req(rport, sp, fp); - break; - case ELS_PRLO: - fc_rport_recv_prlo_req(rport, sp, fp); - break; - case ELS_LOGO: - fc_rport_recv_logo_req(rport, sp, fp); - break; - case ELS_RRQ: - els_data.fp = fp; - lport->tt.seq_els_rsp_send(sp, ELS_RRQ, &els_data); - break; - case ELS_REC: - els_data.fp = fp; - lport->tt.seq_els_rsp_send(sp, ELS_REC, &els_data); - break; - default: - els_data.reason = ELS_RJT_UNSUP; - lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &els_data); - break; - } + mutex_lock(&lport->disc.disc_mutex); + rdata = lport->tt.rport_lookup(lport, ntoh24(fh->fh_s_id)); + if (!rdata) { + mutex_unlock(&lport->disc.disc_mutex); + goto reject; + } + mutex_lock(&rdata->rp_mutex); + mutex_unlock(&lport->disc.disc_mutex); + + switch (rdata->rp_state) { + case RPORT_ST_PRLI: + case RPORT_ST_RTV: + case RPORT_ST_READY: + case RPORT_ST_ADISC: + break; + default: + mutex_unlock(&rdata->rp_mutex); + goto reject; + } + + switch (fc_frame_payload_op(fp)) { + case ELS_PRLI: + fc_rport_recv_prli_req(rdata, sp, fp); + break; + case ELS_PRLO: + fc_rport_recv_prlo_req(rdata, sp, fp); + break; + case ELS_ADISC: + fc_rport_recv_adisc_req(rdata, sp, fp); + break; + case ELS_RRQ: + els_data.fp = fp; + lport->tt.seq_els_rsp_send(sp, ELS_RRQ, &els_data); + break; + case ELS_REC: + els_data.fp = fp; + lport->tt.seq_els_rsp_send(sp, ELS_REC, &els_data); + break; + default: + fc_frame_free(fp); /* can't happen */ + break; } mutex_unlock(&rdata->rp_mutex); + return; + +reject: + lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &els_data); + fc_frame_free(fp); +} + +/** + * fc_rport_recv_req() - Handle a received ELS request from a rport + * @sp: current sequence in the PLOGI exchange + * @fp: response frame + * @lport: Fibre Channel local port + * + * Locking Note: Called with the lport lock held. + */ +void fc_rport_recv_req(struct fc_seq *sp, struct fc_frame *fp, + struct fc_lport *lport) +{ + struct fc_seq_els_data els_data; + + /* + * Handle PLOGI and LOGO requests separately, since they + * don't require prior login. + * Check for unsupported opcodes first and reject them. + * For some ops, it would be incorrect to reject with "PLOGI required". + */ + switch (fc_frame_payload_op(fp)) { + case ELS_PLOGI: + fc_rport_recv_plogi_req(lport, sp, fp); + break; + case ELS_LOGO: + fc_rport_recv_logo_req(lport, sp, fp); + break; + case ELS_PRLI: + case ELS_PRLO: + case ELS_ADISC: + case ELS_RRQ: + case ELS_REC: + fc_rport_recv_els_req(lport, sp, fp); + break; + default: + fc_frame_free(fp); + els_data.fp = NULL; + els_data.reason = ELS_RJT_UNSUP; + els_data.explan = ELS_EXPL_NONE; + lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &els_data); + break; + } } /** * fc_rport_recv_plogi_req() - Handle incoming Port Login (PLOGI) request - * @rport: Fibre Channel remote port that initiated PLOGI + * @lport: local port * @sp: current sequence in the PLOGI exchange * @fp: PLOGI request frame * - * Locking Note: The rport lock is exected to be held before calling - * this function. + * Locking Note: The rport lock is held before calling this function. */ -static void fc_rport_recv_plogi_req(struct fc_rport *rport, +static void fc_rport_recv_plogi_req(struct fc_lport *lport, struct fc_seq *sp, struct fc_frame *rx_fp) { - struct fc_rport_libfc_priv *rdata = rport->dd_data; - struct fc_lport *lport = rdata->local_port; + struct fc_disc *disc; + struct fc_rport_priv *rdata; struct fc_frame *fp = rx_fp; struct fc_exch *ep; struct fc_frame_header *fh; struct fc_els_flogi *pl; struct fc_seq_els_data rjt_data; - u32 sid; - u64 wwpn; - u64 wwnn; - enum fc_els_rjt_reason reject = 0; - u32 f_ctl; - rjt_data.fp = NULL; + u32 sid, f_ctl; + rjt_data.fp = NULL; fh = fc_frame_header_get(fp); + sid = ntoh24(fh->fh_s_id); - FC_RPORT_DBG(rport, "Received PLOGI request while in state %s\n", - fc_rport_state(rport)); + FC_RPORT_ID_DBG(lport, sid, "Received PLOGI request\n"); - sid = ntoh24(fh->fh_s_id); pl = fc_frame_payload_get(fp, sizeof(*pl)); if (!pl) { - FC_RPORT_DBG(rport, "Received PLOGI too short\n"); - WARN_ON(1); - /* XXX TBD: send reject? */ - fc_frame_free(fp); - return; + FC_RPORT_ID_DBG(lport, sid, "Received PLOGI too short\n"); + rjt_data.reason = ELS_RJT_PROT; + rjt_data.explan = ELS_EXPL_INV_LEN; + goto reject; + } + + disc = &lport->disc; + mutex_lock(&disc->disc_mutex); + rdata = lport->tt.rport_create(lport, sid); + if (!rdata) { + mutex_unlock(&disc->disc_mutex); + rjt_data.reason = ELS_RJT_UNAB; + rjt_data.explan = ELS_EXPL_INSUF_RES; + goto reject; } - wwpn = get_unaligned_be64(&pl->fl_wwpn); - wwnn = get_unaligned_be64(&pl->fl_wwnn); + + mutex_lock(&rdata->rp_mutex); + mutex_unlock(&disc->disc_mutex); + + rdata->ids.port_name = get_unaligned_be64(&pl->fl_wwpn); + rdata->ids.node_name = get_unaligned_be64(&pl->fl_wwnn); /* - * If the session was just created, possibly due to the incoming PLOGI, + * If the rport was just created, possibly due to the incoming PLOGI, * set the state appropriately and accept the PLOGI. * * If we had also sent a PLOGI, and if the received PLOGI is from a @@ -996,86 +1236,76 @@ static void fc_rport_recv_plogi_req(struct fc_rport *rport, */ switch (rdata->rp_state) { case RPORT_ST_INIT: - FC_RPORT_DBG(rport, "Received PLOGI, wwpn %llx state INIT " - "- reject\n", (unsigned long long)wwpn); - reject = ELS_RJT_UNSUP; + FC_RPORT_DBG(rdata, "Received PLOGI in INIT state\n"); break; case RPORT_ST_PLOGI: - FC_RPORT_DBG(rport, "Received PLOGI in PLOGI state %d\n", - rdata->rp_state); - if (wwpn < lport->wwpn) - reject = ELS_RJT_INPROG; + FC_RPORT_DBG(rdata, "Received PLOGI in PLOGI state\n"); + if (rdata->ids.port_name < lport->wwpn) { + mutex_unlock(&rdata->rp_mutex); + rjt_data.reason = ELS_RJT_INPROG; + rjt_data.explan = ELS_EXPL_NONE; + goto reject; + } break; case RPORT_ST_PRLI: case RPORT_ST_READY: - FC_RPORT_DBG(rport, "Received PLOGI in logged-in state %d " + case RPORT_ST_ADISC: + FC_RPORT_DBG(rdata, "Received PLOGI in logged-in state %d " "- ignored for now\n", rdata->rp_state); /* XXX TBD - should reset */ break; - case RPORT_ST_NONE: + case RPORT_ST_DELETE: default: - FC_RPORT_DBG(rport, "Received PLOGI in unexpected " - "state %d\n", rdata->rp_state); - fc_frame_free(fp); - return; - break; + FC_RPORT_DBG(rdata, "Received PLOGI in unexpected state %d\n", + rdata->rp_state); + fc_frame_free(rx_fp); + goto out; } - if (reject) { - rjt_data.reason = reject; - rjt_data.explan = ELS_EXPL_NONE; - lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); - fc_frame_free(fp); - } else { - fp = fc_frame_alloc(lport, sizeof(*pl)); - if (fp == NULL) { - fp = rx_fp; - rjt_data.reason = ELS_RJT_UNAB; - rjt_data.explan = ELS_EXPL_NONE; - lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); - fc_frame_free(fp); - } else { - sp = lport->tt.seq_start_next(sp); - WARN_ON(!sp); - fc_rport_set_name(rport, wwpn, wwnn); - - /* - * Get session payload size from incoming PLOGI. - */ - rport->maxframe_size = - fc_plogi_get_maxframe(pl, lport->mfs); - fc_frame_free(rx_fp); - fc_plogi_fill(lport, fp, ELS_LS_ACC); - - /* - * Send LS_ACC. If this fails, - * the originator should retry. - */ - f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ; - f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT; - ep = fc_seq_exch(sp); - fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, - FC_TYPE_ELS, f_ctl, 0); - lport->tt.seq_send(lport, sp, fp); - if (rdata->rp_state == RPORT_ST_PLOGI) - fc_rport_enter_prli(rport); - } - } + /* + * Get session payload size from incoming PLOGI. + */ + rdata->maxframe_size = fc_plogi_get_maxframe(pl, lport->mfs); + fc_frame_free(rx_fp); + + /* + * Send LS_ACC. If this fails, the originator should retry. + */ + sp = lport->tt.seq_start_next(sp); + if (!sp) + goto out; + fp = fc_frame_alloc(lport, sizeof(*pl)); + if (!fp) + goto out; + + fc_plogi_fill(lport, fp, ELS_LS_ACC); + f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT; + ep = fc_seq_exch(sp); + fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid, + FC_TYPE_ELS, f_ctl, 0); + lport->tt.seq_send(lport, sp, fp); + fc_rport_enter_prli(rdata); +out: + mutex_unlock(&rdata->rp_mutex); + return; + +reject: + lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data); + fc_frame_free(fp); } /** * fc_rport_recv_prli_req() - Handle incoming Process Login (PRLI) request - * @rport: Fibre Channel remote port that initiated PRLI + * @rdata: private remote port data * @sp: current sequence in the PRLI exchange * @fp: PRLI request frame * * Locking Note: The rport lock is exected to be held before calling * this function. */ -static void fc_rport_recv_prli_req(struct fc_rport *rport, +static void fc_rport_recv_prli_req(struct fc_rport_priv *rdata, struct fc_seq *sp, struct fc_frame *rx_fp) { - struct fc_rport_libfc_priv *rdata = rport->dd_data; struct fc_lport *lport = rdata->local_port; struct fc_exch *ep; struct fc_frame *fp; @@ -1099,12 +1329,14 @@ static void fc_rport_recv_prli_req(struct fc_rport *rport, fh = fc_frame_header_get(rx_fp); - FC_RPORT_DBG(rport, "Received PRLI request while in state %s\n", - fc_rport_state(rport)); + FC_RPORT_DBG(rdata, "Received PRLI request while in state %s\n", + fc_rport_state(rdata)); switch (rdata->rp_state) { case RPORT_ST_PRLI: + case RPORT_ST_RTV: case RPORT_ST_READY: + case RPORT_ST_ADISC: reason = ELS_RJT_NONE; break; default: @@ -1149,6 +1381,9 @@ static void fc_rport_recv_prli_req(struct fc_rport *rport, pp->prli.prli_len = htons(len); len -= sizeof(struct fc_els_prli); + /* reinitialize remote port roles */ + rdata->ids.roles = FC_RPORT_ROLE_UNKNOWN; + /* * Go through all the service parameter pages and build * response. If plen indicates longer SPP than standard, @@ -1169,12 +1404,12 @@ static void fc_rport_recv_prli_req(struct fc_rport *rport, fcp_parm = ntohl(rspp->spp_params); if (fcp_parm * FCP_SPPF_RETRY) rdata->flags |= FC_RP_FLAGS_RETRY; - rport->supported_classes = FC_COS_CLASS3; + rdata->supported_classes = FC_COS_CLASS3; if (fcp_parm & FCP_SPPF_INIT_FCN) roles |= FC_RPORT_ROLE_FCP_INITIATOR; if (fcp_parm & FCP_SPPF_TARG_FCN) roles |= FC_RPORT_ROLE_FCP_TARGET; - rport->roles = roles; + rdata->ids.roles = roles; spp->spp_params = htonl(lport->service_params); @@ -1204,9 +1439,10 @@ static void fc_rport_recv_prli_req(struct fc_rport *rport, */ switch (rdata->rp_state) { case RPORT_ST_PRLI: - fc_rport_enter_ready(rport); + fc_rport_enter_ready(rdata); break; case RPORT_ST_READY: + case RPORT_ST_ADISC: break; default: break; @@ -1217,17 +1453,17 @@ static void fc_rport_recv_prli_req(struct fc_rport *rport, /** * fc_rport_recv_prlo_req() - Handle incoming Process Logout (PRLO) request - * @rport: Fibre Channel remote port that initiated PRLO + * @rdata: private remote port data * @sp: current sequence in the PRLO exchange * @fp: PRLO request frame * * Locking Note: The rport lock is exected to be held before calling * this function. */ -static void fc_rport_recv_prlo_req(struct fc_rport *rport, struct fc_seq *sp, +static void fc_rport_recv_prlo_req(struct fc_rport_priv *rdata, + struct fc_seq *sp, struct fc_frame *fp) { - struct fc_rport_libfc_priv *rdata = rport->dd_data; struct fc_lport *lport = rdata->local_port; struct fc_frame_header *fh; @@ -1235,13 +1471,8 @@ static void fc_rport_recv_prlo_req(struct fc_rport *rport, struct fc_seq *sp, fh = fc_frame_header_get(fp); - FC_RPORT_DBG(rport, "Received PRLO request while in state %s\n", - fc_rport_state(rport)); - - if (rdata->rp_state == RPORT_ST_NONE) { - fc_frame_free(fp); - return; - } + FC_RPORT_DBG(rdata, "Received PRLO request while in state %s\n", + fc_rport_state(rdata)); rjt_data.fp = NULL; rjt_data.reason = ELS_RJT_UNAB; @@ -1252,35 +1483,46 @@ static void fc_rport_recv_prlo_req(struct fc_rport *rport, struct fc_seq *sp, /** * fc_rport_recv_logo_req() - Handle incoming Logout (LOGO) request - * @rport: Fibre Channel remote port that initiated LOGO + * @lport: local port. * @sp: current sequence in the LOGO exchange * @fp: LOGO request frame * * Locking Note: The rport lock is exected to be held before calling * this function. */ -static void fc_rport_recv_logo_req(struct fc_rport *rport, struct fc_seq *sp, +static void fc_rport_recv_logo_req(struct fc_lport *lport, + struct fc_seq *sp, struct fc_frame *fp) { struct fc_frame_header *fh; - struct fc_rport_libfc_priv *rdata = rport->dd_data; - struct fc_lport *lport = rdata->local_port; - - fh = fc_frame_header_get(fp); + struct fc_rport_priv *rdata; + u32 sid; - FC_RPORT_DBG(rport, "Received LOGO request while in state %s\n", - fc_rport_state(rport)); + lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); - if (rdata->rp_state == RPORT_ST_NONE) { - fc_frame_free(fp); - return; - } + fh = fc_frame_header_get(fp); + sid = ntoh24(fh->fh_s_id); - rdata->event = RPORT_EV_LOGO; - fc_rport_state_enter(rport, RPORT_ST_NONE); - queue_work(rport_event_queue, &rdata->event_work); + mutex_lock(&lport->disc.disc_mutex); + rdata = lport->tt.rport_lookup(lport, sid); + if (rdata) { + mutex_lock(&rdata->rp_mutex); + FC_RPORT_DBG(rdata, "Received LOGO request while in state %s\n", + fc_rport_state(rdata)); - lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL); + /* + * If the remote port was created due to discovery, + * log back in. It may have seen a stale RSCN about us. + */ + if (rdata->rp_state != RPORT_ST_DELETE && rdata->disc_id) + fc_rport_enter_plogi(rdata); + else + fc_rport_enter_delete(rdata, RPORT_EV_LOGO); + mutex_unlock(&rdata->rp_mutex); + } else + FC_RPORT_ID_DBG(lport, sid, + "Received LOGO from non-logged-in port\n"); + mutex_unlock(&lport->disc.disc_mutex); fc_frame_free(fp); } @@ -1291,8 +1533,11 @@ static void fc_rport_flush_queue(void) int fc_rport_init(struct fc_lport *lport) { + if (!lport->tt.rport_lookup) + lport->tt.rport_lookup = fc_rport_lookup; + if (!lport->tt.rport_create) - lport->tt.rport_create = fc_rport_rogue_create; + lport->tt.rport_create = fc_rport_create; if (!lport->tt.rport_login) lport->tt.rport_login = fc_rport_login; @@ -1306,6 +1551,9 @@ int fc_rport_init(struct fc_lport *lport) if (!lport->tt.rport_flush_queue) lport->tt.rport_flush_queue = fc_rport_flush_queue; + if (!lport->tt.rport_destroy) + lport->tt.rport_destroy = fc_rport_destroy; + return 0; } EXPORT_SYMBOL(fc_rport_init); @@ -1327,8 +1575,8 @@ EXPORT_SYMBOL(fc_destroy_rport); void fc_rport_terminate_io(struct fc_rport *rport) { - struct fc_rport_libfc_priv *rdata = rport->dd_data; - struct fc_lport *lport = rdata->local_port; + struct fc_rport_libfc_priv *rp = rport->dd_data; + struct fc_lport *lport = rp->local_port; lport->tt.exch_mgr_reset(lport, 0, rport->port_id); lport->tt.exch_mgr_reset(lport, rport->port_id, 0); diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index a751f62..8dc73c4 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -109,12 +109,9 @@ inline void iscsi_conn_queue_work(struct iscsi_conn *conn) } EXPORT_SYMBOL_GPL(iscsi_conn_queue_work); -void -iscsi_update_cmdsn(struct iscsi_session *session, struct iscsi_nopin *hdr) +static void __iscsi_update_cmdsn(struct iscsi_session *session, + uint32_t exp_cmdsn, uint32_t max_cmdsn) { - uint32_t max_cmdsn = be32_to_cpu(hdr->max_cmdsn); - uint32_t exp_cmdsn = be32_to_cpu(hdr->exp_cmdsn); - /* * standard specifies this check for when to update expected and * max sequence numbers @@ -138,6 +135,12 @@ iscsi_update_cmdsn(struct iscsi_session *session, struct iscsi_nopin *hdr) iscsi_conn_queue_work(session->leadconn); } } + +void iscsi_update_cmdsn(struct iscsi_session *session, struct iscsi_nopin *hdr) +{ + __iscsi_update_cmdsn(session, be32_to_cpu(hdr->exp_cmdsn), + be32_to_cpu(hdr->max_cmdsn)); +} EXPORT_SYMBOL_GPL(iscsi_update_cmdsn); /** @@ -301,8 +304,6 @@ static int iscsi_prep_scsi_cmd_pdu(struct iscsi_task *task) hdr->flags = ISCSI_ATTR_SIMPLE; int_to_scsilun(sc->device->lun, (struct scsi_lun *)hdr->lun); memcpy(task->lun, hdr->lun, sizeof(task->lun)); - hdr->cmdsn = task->cmdsn = cpu_to_be32(session->cmdsn); - session->cmdsn++; hdr->exp_statsn = cpu_to_be32(conn->exp_statsn); cmd_len = sc->cmd_len; if (cmd_len < ISCSI_CDB_SIZE) @@ -388,6 +389,8 @@ static int iscsi_prep_scsi_cmd_pdu(struct iscsi_task *task) return -EIO; task->state = ISCSI_TASK_RUNNING; + hdr->cmdsn = task->cmdsn = cpu_to_be32(session->cmdsn); + session->cmdsn++; conn->scsicmd_pdus_cnt++; ISCSI_DBG_SESSION(session, "iscsi prep [%s cid %d sc %p cdb 0x%x " @@ -499,6 +502,31 @@ static void iscsi_complete_task(struct iscsi_task *task, int state) __iscsi_put_task(task); } +/** + * iscsi_complete_scsi_task - finish scsi task normally + * @task: iscsi task for scsi cmd + * @exp_cmdsn: expected cmd sn in cpu format + * @max_cmdsn: max cmd sn in cpu format + * + * This is used when drivers do not need or cannot perform + * lower level pdu processing. + * + * Called with session lock + */ +void iscsi_complete_scsi_task(struct iscsi_task *task, + uint32_t exp_cmdsn, uint32_t max_cmdsn) +{ + struct iscsi_conn *conn = task->conn; + + ISCSI_DBG_SESSION(conn->session, "[itt 0x%x]\n", task->itt); + + conn->last_recv = jiffies; + __iscsi_update_cmdsn(conn->session, exp_cmdsn, max_cmdsn); + iscsi_complete_task(task, ISCSI_TASK_COMPLETED); +} +EXPORT_SYMBOL_GPL(iscsi_complete_scsi_task); + + /* * session lock must be held and if not called for a task that is * still pending or from the xmit thread, then xmit thread must @@ -857,27 +885,102 @@ static void iscsi_send_nopout(struct iscsi_conn *conn, struct iscsi_nopin *rhdr) } } +static int iscsi_nop_out_rsp(struct iscsi_task *task, + struct iscsi_nopin *nop, char *data, int datalen) +{ + struct iscsi_conn *conn = task->conn; + int rc = 0; + + if (conn->ping_task != task) { + /* + * If this is not in response to one of our + * nops then it must be from userspace. + */ + if (iscsi_recv_pdu(conn->cls_conn, (struct iscsi_hdr *)nop, + data, datalen)) + rc = ISCSI_ERR_CONN_FAILED; + } else + mod_timer(&conn->transport_timer, jiffies + conn->recv_timeout); + iscsi_complete_task(task, ISCSI_TASK_COMPLETED); + return rc; +} + static int iscsi_handle_reject(struct iscsi_conn *conn, struct iscsi_hdr *hdr, char *data, int datalen) { struct iscsi_reject *reject = (struct iscsi_reject *)hdr; struct iscsi_hdr rejected_pdu; + int opcode, rc = 0; conn->exp_statsn = be32_to_cpu(reject->statsn) + 1; - if (reject->reason == ISCSI_REASON_DATA_DIGEST_ERROR) { - if (ntoh24(reject->dlength) > datalen) - return ISCSI_ERR_PROTO; + if (ntoh24(reject->dlength) > datalen || + ntoh24(reject->dlength) < sizeof(struct iscsi_hdr)) { + iscsi_conn_printk(KERN_ERR, conn, "Cannot handle rejected " + "pdu. Invalid data length (pdu dlength " + "%u, datalen %d\n", ntoh24(reject->dlength), + datalen); + return ISCSI_ERR_PROTO; + } + memcpy(&rejected_pdu, data, sizeof(struct iscsi_hdr)); + opcode = rejected_pdu.opcode & ISCSI_OPCODE_MASK; + + switch (reject->reason) { + case ISCSI_REASON_DATA_DIGEST_ERROR: + iscsi_conn_printk(KERN_ERR, conn, + "pdu (op 0x%x itt 0x%x) rejected " + "due to DataDigest error.\n", + rejected_pdu.itt, opcode); + break; + case ISCSI_REASON_IMM_CMD_REJECT: + iscsi_conn_printk(KERN_ERR, conn, + "pdu (op 0x%x itt 0x%x) rejected. Too many " + "immediate commands.\n", + rejected_pdu.itt, opcode); + /* + * We only send one TMF at a time so if the target could not + * handle it, then it should get fixed (RFC mandates that + * a target can handle one immediate TMF per conn). + * + * For nops-outs, we could have sent more than one if + * the target is sending us lots of nop-ins + */ + if (opcode != ISCSI_OP_NOOP_OUT) + return 0; - if (ntoh24(reject->dlength) >= sizeof(struct iscsi_hdr)) { - memcpy(&rejected_pdu, data, sizeof(struct iscsi_hdr)); - iscsi_conn_printk(KERN_ERR, conn, - "pdu (op 0x%x) rejected " - "due to DataDigest error.\n", - rejected_pdu.opcode); + if (rejected_pdu.itt == cpu_to_be32(ISCSI_RESERVED_TAG)) + /* + * nop-out in response to target's nop-out rejected. + * Just resend. + */ + iscsi_send_nopout(conn, + (struct iscsi_nopin*)&rejected_pdu); + else { + struct iscsi_task *task; + /* + * Our nop as ping got dropped. We know the target + * and transport are ok so just clean up + */ + task = iscsi_itt_to_task(conn, rejected_pdu.itt); + if (!task) { + iscsi_conn_printk(KERN_ERR, conn, + "Invalid pdu reject. Could " + "not lookup rejected task.\n"); + rc = ISCSI_ERR_BAD_ITT; + } else + rc = iscsi_nop_out_rsp(task, + (struct iscsi_nopin*)&rejected_pdu, + NULL, 0); } + break; + default: + iscsi_conn_printk(KERN_ERR, conn, + "pdu (op 0x%x itt 0x%x) rejected. Reason " + "code 0x%x\n", rejected_pdu.itt, + rejected_pdu.opcode, reject->reason); + break; } - return 0; + return rc; } /** @@ -1038,15 +1141,8 @@ int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr, } conn->exp_statsn = be32_to_cpu(hdr->statsn) + 1; - if (conn->ping_task != task) - /* - * If this is not in response to one of our - * nops then it must be from userspace. - */ - goto recv_pdu; - - mod_timer(&conn->transport_timer, jiffies + conn->recv_timeout); - iscsi_complete_task(task, ISCSI_TASK_COMPLETED); + rc = iscsi_nop_out_rsp(task, (struct iscsi_nopin*)hdr, + data, datalen); break; default: rc = ISCSI_ERR_BAD_OPCODE; @@ -1212,6 +1308,9 @@ static int iscsi_xmit_task(struct iscsi_conn *conn) struct iscsi_task *task = conn->task; int rc; + if (test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx)) + return -ENODATA; + __iscsi_get_task(task); spin_unlock_bh(&conn->session->lock); rc = conn->session->tt->xmit_task(task); @@ -1261,7 +1360,7 @@ static int iscsi_data_xmit(struct iscsi_conn *conn) int rc = 0; spin_lock_bh(&conn->session->lock); - if (unlikely(conn->suspend_tx)) { + if (test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx)) { ISCSI_DBG_SESSION(conn->session, "Tx suspended!\n"); spin_unlock_bh(&conn->session->lock); return -ENODATA; @@ -1270,7 +1369,7 @@ static int iscsi_data_xmit(struct iscsi_conn *conn) if (conn->task) { rc = iscsi_xmit_task(conn); if (rc) - goto again; + goto done; } /* @@ -1290,7 +1389,7 @@ check_mgmt: } rc = iscsi_xmit_task(conn); if (rc) - goto again; + goto done; } /* process pending command queue */ @@ -1311,14 +1410,14 @@ check_mgmt: list_add_tail(&conn->task->running, &conn->cmdqueue); conn->task = NULL; - goto again; + goto done; } else fail_scsi_task(conn->task, DID_ABORT); continue; } rc = iscsi_xmit_task(conn); if (rc) - goto again; + goto done; /* * we could continuously get new task requests so * we need to check the mgmt queue for nops that need to @@ -1344,16 +1443,14 @@ check_mgmt: conn->task->state = ISCSI_TASK_RUNNING; rc = iscsi_xmit_task(conn); if (rc) - goto again; + goto done; if (!list_empty(&conn->mgmtqueue)) goto check_mgmt; } spin_unlock_bh(&conn->session->lock); return -ENODATA; -again: - if (unlikely(conn->suspend_tx)) - rc = -ENODATA; +done: spin_unlock_bh(&conn->session->lock); return rc; } @@ -1474,6 +1571,12 @@ int iscsi_queuecommand(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *)) goto fault; } + if (test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx)) { + reason = FAILURE_SESSION_IN_RECOVERY; + sc->result = DID_REQUEUE; + goto fault; + } + if (iscsi_check_cmdsn_window_closed(conn)) { reason = FAILURE_WINDOW_CLOSED; goto reject; @@ -1497,6 +1600,7 @@ int iscsi_queuecommand(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *)) } } if (session->tt->xmit_task(task)) { + session->cmdsn--; reason = FAILURE_SESSION_NOT_READY; goto prepd_reject; } @@ -1712,6 +1816,33 @@ static void fail_scsi_tasks(struct iscsi_conn *conn, unsigned lun, } } +/** + * iscsi_suspend_queue - suspend iscsi_queuecommand + * @conn: iscsi conn to stop queueing IO on + * + * This grabs the session lock to make sure no one is in + * xmit_task/queuecommand, and then sets suspend to prevent + * new commands from being queued. This only needs to be called + * by offload drivers that need to sync a path like ep disconnect + * with the iscsi_queuecommand/xmit_task. To start IO again libiscsi + * will call iscsi_start_tx and iscsi_unblock_session when in FFP. + */ +void iscsi_suspend_queue(struct iscsi_conn *conn) +{ + spin_lock_bh(&conn->session->lock); + set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx); + spin_unlock_bh(&conn->session->lock); +} +EXPORT_SYMBOL_GPL(iscsi_suspend_queue); + +/** + * iscsi_suspend_tx - suspend iscsi_data_xmit + * @conn: iscsi conn tp stop processing IO on. + * + * This function sets the suspend bit to prevent iscsi_data_xmit + * from sending new IO, and if work is queued on the xmit thread + * it will wait for it to be completed. + */ void iscsi_suspend_tx(struct iscsi_conn *conn) { struct Scsi_Host *shost = conn->session->host; diff --git a/drivers/scsi/libsrp.c b/drivers/scsi/libsrp.c index 2742ae8..9ad38e8 100644 --- a/drivers/scsi/libsrp.c +++ b/drivers/scsi/libsrp.c @@ -124,6 +124,7 @@ static void srp_ring_free(struct device *dev, struct srp_buf **ring, size_t max, dma_free_coherent(dev, size, ring[i]->buf, ring[i]->dma); kfree(ring[i]); } + kfree(ring); } int srp_target_alloc(struct srp_target *target, struct device *dev, diff --git a/drivers/scsi/lpfc/Makefile b/drivers/scsi/lpfc/Makefile index 1c28670..ad05d6e 100644 --- a/drivers/scsi/lpfc/Makefile +++ b/drivers/scsi/lpfc/Makefile @@ -28,4 +28,4 @@ obj-$(CONFIG_SCSI_LPFC) := lpfc.o lpfc-objs := lpfc_mem.o lpfc_sli.o lpfc_ct.o lpfc_els.o lpfc_hbadisc.o \ lpfc_init.o lpfc_mbox.o lpfc_nportdisc.o lpfc_scsi.o lpfc_attr.o \ - lpfc_vport.o lpfc_debugfs.o + lpfc_vport.o lpfc_debugfs.o lpfc_bsg.o diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h index 1877d98..aa10f79 100644 --- a/drivers/scsi/lpfc/lpfc.h +++ b/drivers/scsi/lpfc/lpfc.h @@ -312,6 +312,7 @@ struct lpfc_vport { #define FC_BYPASSED_MODE 0x20000 /* NPort is in bypassed mode */ #define FC_VPORT_NEEDS_REG_VPI 0x80000 /* Needs to have its vpi registered */ #define FC_RSCN_DEFERRED 0x100000 /* A deferred RSCN being processed */ +#define FC_VPORT_NEEDS_INIT_VPI 0x200000 /* Need to INIT_VPI before FDISC */ uint32_t ct_flags; #define FC_CT_RFF_ID 0x1 /* RFF_ID accepted by switch */ @@ -440,6 +441,12 @@ enum intr_type_t { MSIX, }; +struct unsol_rcv_ct_ctx { + uint32_t ctxt_id; + uint32_t SID; + uint32_t oxid; +}; + struct lpfc_hba { /* SCSI interface function jump table entries */ int (*lpfc_new_scsi_buf) @@ -525,6 +532,8 @@ struct lpfc_hba { #define FCP_XRI_ABORT_EVENT 0x20 #define ELS_XRI_ABORT_EVENT 0x40 #define ASYNC_EVENT 0x80 +#define LINK_DISABLED 0x100 /* Link disabled by user */ +#define FCF_DISC_INPROGRESS 0x200 /* FCF discovery in progress */ struct lpfc_dmabuf slim2p; MAILBOX_t *mbox; @@ -616,6 +625,8 @@ struct lpfc_hba { uint32_t hbq_count; /* Count of configured HBQs */ struct hbq_s hbqs[LPFC_MAX_HBQS]; /* local copy of hbq indicies */ + uint32_t fcp_qidx; /* next work queue to post work to */ + unsigned long pci_bar0_map; /* Physical address for PCI BAR0 */ unsigned long pci_bar1_map; /* Physical address for PCI BAR1 */ unsigned long pci_bar2_map; /* Physical address for PCI BAR2 */ @@ -682,6 +693,7 @@ struct lpfc_hba { struct pci_pool *lpfc_mbuf_pool; struct pci_pool *lpfc_hrb_pool; /* header receive buffer pool */ struct pci_pool *lpfc_drb_pool; /* data receive buffer pool */ + struct pci_pool *lpfc_hbq_pool; /* SLI3 hbq buffer pool */ struct lpfc_dma_pool lpfc_mbuf_safety_pool; mempool_t *mbox_mem_pool; @@ -763,11 +775,18 @@ struct lpfc_hba { /* Maximum number of events that can be outstanding at any time*/ #define LPFC_MAX_EVT_COUNT 512 atomic_t fast_event_count; + uint32_t fcoe_eventtag; + uint32_t fcoe_eventtag_at_fcf_scan; struct lpfc_fcf fcf; uint8_t fc_map[3]; uint8_t valid_vlan; uint16_t vlan_id; struct list_head fcf_conn_rec_list; + + struct mutex ct_event_mutex; /* synchronize access to ct_ev_waiters */ + struct list_head ct_ev_waiters; + struct unsol_rcv_ct_ctx ct_ctx[64]; + uint32_t ctx_idx; }; static inline struct Scsi_Host * diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c index fc07be5..e1a30a1 100644 --- a/drivers/scsi/lpfc/lpfc_attr.c +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -394,7 +394,12 @@ lpfc_link_state_show(struct device *dev, struct device_attribute *attr, case LPFC_INIT_MBX_CMDS: case LPFC_LINK_DOWN: case LPFC_HBA_ERROR: - len += snprintf(buf + len, PAGE_SIZE-len, "Link Down\n"); + if (phba->hba_flag & LINK_DISABLED) + len += snprintf(buf + len, PAGE_SIZE-len, + "Link Down - User disabled\n"); + else + len += snprintf(buf + len, PAGE_SIZE-len, + "Link Down\n"); break; case LPFC_LINK_UP: case LPFC_CLEAR_LA: @@ -4127,6 +4132,9 @@ struct fc_function_template lpfc_transport_functions = { .vport_disable = lpfc_vport_disable, .set_vport_symbolic_name = lpfc_set_vport_symbolic_name, + + .bsg_request = lpfc_bsg_request, + .bsg_timeout = lpfc_bsg_timeout, }; struct fc_function_template lpfc_vport_transport_functions = { diff --git a/drivers/scsi/lpfc/lpfc_bsg.c b/drivers/scsi/lpfc/lpfc_bsg.c new file mode 100644 index 0000000..da6bf5a --- /dev/null +++ b/drivers/scsi/lpfc/lpfc_bsg.c @@ -0,0 +1,904 @@ +/******************************************************************* + * This file is part of the Emulex Linux Device Driver for * + * Fibre Channel Host Bus Adapters. * + * Copyright (C) 2009 Emulex. All rights reserved. * + * EMULEX and SLI are trademarks of Emulex. * + * www.emulex.com * + * * + * This program is free software; you can redistribute it and/or * + * modify it under the terms of version 2 of the GNU General * + * Public License as published by the Free Software Foundation. * + * This program is distributed in the hope that it will be useful. * + * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * + * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * + * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * + * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * + * TO BE LEGALLY INVALID. See the GNU General Public License for * + * more details, a copy of which can be found in the file COPYING * + * included with this package. * + *******************************************************************/ + +#include <linux/interrupt.h> +#include <linux/mempool.h> +#include <linux/pci.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_transport_fc.h> +#include <scsi/scsi_bsg_fc.h> + +#include "lpfc_hw4.h" +#include "lpfc_hw.h" +#include "lpfc_sli.h" +#include "lpfc_sli4.h" +#include "lpfc_nl.h" +#include "lpfc_disc.h" +#include "lpfc_scsi.h" +#include "lpfc.h" +#include "lpfc_logmsg.h" +#include "lpfc_crtn.h" +#include "lpfc_vport.h" +#include "lpfc_version.h" + +/** + * lpfc_bsg_rport_ct - send a CT command from a bsg request + * @job: fc_bsg_job to handle + */ +static int +lpfc_bsg_rport_ct(struct fc_bsg_job *job) +{ + struct Scsi_Host *shost = job->shost; + struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; + struct lpfc_hba *phba = vport->phba; + struct lpfc_rport_data *rdata = job->rport->dd_data; + struct lpfc_nodelist *ndlp = rdata->pnode; + struct ulp_bde64 *bpl = NULL; + uint32_t timeout; + struct lpfc_iocbq *cmdiocbq = NULL; + struct lpfc_iocbq *rspiocbq = NULL; + IOCB_t *cmd; + IOCB_t *rsp; + struct lpfc_dmabuf *bmp = NULL; + int request_nseg; + int reply_nseg; + struct scatterlist *sgel = NULL; + int numbde; + dma_addr_t busaddr; + int rc = 0; + + /* in case no data is transferred */ + job->reply->reply_payload_rcv_len = 0; + + if (!lpfc_nlp_get(ndlp)) { + job->reply->result = -ENODEV; + return 0; + } + + if (ndlp->nlp_flag & NLP_ELS_SND_MASK) { + rc = -ENODEV; + goto free_ndlp_exit; + } + + spin_lock_irq(shost->host_lock); + cmdiocbq = lpfc_sli_get_iocbq(phba); + if (!cmdiocbq) { + rc = -ENOMEM; + spin_unlock_irq(shost->host_lock); + goto free_ndlp_exit; + } + cmd = &cmdiocbq->iocb; + + rspiocbq = lpfc_sli_get_iocbq(phba); + if (!rspiocbq) { + rc = -ENOMEM; + goto free_cmdiocbq; + } + spin_unlock_irq(shost->host_lock); + + rsp = &rspiocbq->iocb; + + bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); + if (!bmp) { + rc = -ENOMEM; + spin_lock_irq(shost->host_lock); + goto free_rspiocbq; + } + + spin_lock_irq(shost->host_lock); + bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys); + if (!bmp->virt) { + rc = -ENOMEM; + goto free_bmp; + } + spin_unlock_irq(shost->host_lock); + + INIT_LIST_HEAD(&bmp->list); + bpl = (struct ulp_bde64 *) bmp->virt; + + request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list, + job->request_payload.sg_cnt, DMA_TO_DEVICE); + for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) { + busaddr = sg_dma_address(sgel); + bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; + bpl->tus.f.bdeSize = sg_dma_len(sgel); + bpl->tus.w = cpu_to_le32(bpl->tus.w); + bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); + bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); + bpl++; + } + + reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list, + job->reply_payload.sg_cnt, DMA_FROM_DEVICE); + for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) { + busaddr = sg_dma_address(sgel); + bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; + bpl->tus.f.bdeSize = sg_dma_len(sgel); + bpl->tus.w = cpu_to_le32(bpl->tus.w); + bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); + bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); + bpl++; + } + + cmd->un.genreq64.bdl.ulpIoTag32 = 0; + cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys); + cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys); + cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; + cmd->un.genreq64.bdl.bdeSize = + (request_nseg + reply_nseg) * sizeof(struct ulp_bde64); + cmd->ulpCommand = CMD_GEN_REQUEST64_CR; + cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA); + cmd->un.genreq64.w5.hcsw.Dfctl = 0; + cmd->un.genreq64.w5.hcsw.Rctl = FC_UNSOL_CTL; + cmd->un.genreq64.w5.hcsw.Type = FC_COMMON_TRANSPORT_ULP; + cmd->ulpBdeCount = 1; + cmd->ulpLe = 1; + cmd->ulpClass = CLASS3; + cmd->ulpContext = ndlp->nlp_rpi; + cmd->ulpOwner = OWN_CHIP; + cmdiocbq->vport = phba->pport; + cmdiocbq->context1 = NULL; + cmdiocbq->context2 = NULL; + cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC; + + timeout = phba->fc_ratov * 2; + job->dd_data = cmdiocbq; + + rc = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq, rspiocbq, + timeout + LPFC_DRVR_TIMEOUT); + + if (rc != IOCB_TIMEDOUT) { + pci_unmap_sg(phba->pcidev, job->request_payload.sg_list, + job->request_payload.sg_cnt, DMA_TO_DEVICE); + pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list, + job->reply_payload.sg_cnt, DMA_FROM_DEVICE); + } + + if (rc == IOCB_TIMEDOUT) { + lpfc_sli_release_iocbq(phba, rspiocbq); + rc = -EACCES; + goto free_ndlp_exit; + } + + if (rc != IOCB_SUCCESS) { + rc = -EACCES; + goto free_outdmp; + } + + if (rsp->ulpStatus) { + if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) { + switch (rsp->un.ulpWord[4] & 0xff) { + case IOERR_SEQUENCE_TIMEOUT: + rc = -ETIMEDOUT; + break; + case IOERR_INVALID_RPI: + rc = -EFAULT; + break; + default: + rc = -EACCES; + break; + } + goto free_outdmp; + } + } else + job->reply->reply_payload_rcv_len = + rsp->un.genreq64.bdl.bdeSize; + +free_outdmp: + spin_lock_irq(shost->host_lock); + lpfc_mbuf_free(phba, bmp->virt, bmp->phys); +free_bmp: + kfree(bmp); +free_rspiocbq: + lpfc_sli_release_iocbq(phba, rspiocbq); +free_cmdiocbq: + lpfc_sli_release_iocbq(phba, cmdiocbq); + spin_unlock_irq(shost->host_lock); +free_ndlp_exit: + lpfc_nlp_put(ndlp); + + /* make error code available to userspace */ + job->reply->result = rc; + /* complete the job back to userspace */ + job->job_done(job); + + return 0; +} + +/** + * lpfc_bsg_rport_els - send an ELS command from a bsg request + * @job: fc_bsg_job to handle + */ +static int +lpfc_bsg_rport_els(struct fc_bsg_job *job) +{ + struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; + struct lpfc_hba *phba = vport->phba; + struct lpfc_rport_data *rdata = job->rport->dd_data; + struct lpfc_nodelist *ndlp = rdata->pnode; + + uint32_t elscmd; + uint32_t cmdsize; + uint32_t rspsize; + struct lpfc_iocbq *rspiocbq; + struct lpfc_iocbq *cmdiocbq; + IOCB_t *rsp; + uint16_t rpi = 0; + struct lpfc_dmabuf *pcmd; + struct lpfc_dmabuf *prsp; + struct lpfc_dmabuf *pbuflist = NULL; + struct ulp_bde64 *bpl; + int iocb_status; + int request_nseg; + int reply_nseg; + struct scatterlist *sgel = NULL; + int numbde; + dma_addr_t busaddr; + int rc = 0; + + /* in case no data is transferred */ + job->reply->reply_payload_rcv_len = 0; + + if (!lpfc_nlp_get(ndlp)) { + rc = -ENODEV; + goto out; + } + + elscmd = job->request->rqst_data.r_els.els_code; + cmdsize = job->request_payload.payload_len; + rspsize = job->reply_payload.payload_len; + rspiocbq = lpfc_sli_get_iocbq(phba); + if (!rspiocbq) { + lpfc_nlp_put(ndlp); + rc = -ENOMEM; + goto out; + } + + rsp = &rspiocbq->iocb; + rpi = ndlp->nlp_rpi; + + cmdiocbq = lpfc_prep_els_iocb(phba->pport, 1, cmdsize, 0, ndlp, + ndlp->nlp_DID, elscmd); + + if (!cmdiocbq) { + lpfc_sli_release_iocbq(phba, rspiocbq); + return -EIO; + } + + job->dd_data = cmdiocbq; + pcmd = (struct lpfc_dmabuf *) cmdiocbq->context2; + prsp = (struct lpfc_dmabuf *) pcmd->list.next; + + lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys); + kfree(pcmd); + lpfc_mbuf_free(phba, prsp->virt, prsp->phys); + kfree(prsp); + cmdiocbq->context2 = NULL; + + pbuflist = (struct lpfc_dmabuf *) cmdiocbq->context3; + bpl = (struct ulp_bde64 *) pbuflist->virt; + + request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list, + job->request_payload.sg_cnt, DMA_TO_DEVICE); + + for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) { + busaddr = sg_dma_address(sgel); + bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; + bpl->tus.f.bdeSize = sg_dma_len(sgel); + bpl->tus.w = cpu_to_le32(bpl->tus.w); + bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); + bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); + bpl++; + } + + reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list, + job->reply_payload.sg_cnt, DMA_FROM_DEVICE); + for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) { + busaddr = sg_dma_address(sgel); + bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; + bpl->tus.f.bdeSize = sg_dma_len(sgel); + bpl->tus.w = cpu_to_le32(bpl->tus.w); + bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); + bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); + bpl++; + } + + cmdiocbq->iocb.un.elsreq64.bdl.bdeSize = + (request_nseg + reply_nseg) * sizeof(struct ulp_bde64); + cmdiocbq->iocb.ulpContext = rpi; + cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC; + cmdiocbq->context1 = NULL; + cmdiocbq->context2 = NULL; + + iocb_status = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq, + rspiocbq, (phba->fc_ratov * 2) + + LPFC_DRVR_TIMEOUT); + + /* release the new ndlp once the iocb completes */ + lpfc_nlp_put(ndlp); + if (iocb_status != IOCB_TIMEDOUT) { + pci_unmap_sg(phba->pcidev, job->request_payload.sg_list, + job->request_payload.sg_cnt, DMA_TO_DEVICE); + pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list, + job->reply_payload.sg_cnt, DMA_FROM_DEVICE); + } + + if (iocb_status == IOCB_SUCCESS) { + if (rsp->ulpStatus == IOSTAT_SUCCESS) { + job->reply->reply_payload_rcv_len = + rsp->un.elsreq64.bdl.bdeSize; + rc = 0; + } else if (rsp->ulpStatus == IOSTAT_LS_RJT) { + struct fc_bsg_ctels_reply *els_reply; + /* LS_RJT data returned in word 4 */ + uint8_t *rjt_data = (uint8_t *)&rsp->un.ulpWord[4]; + + els_reply = &job->reply->reply_data.ctels_reply; + job->reply->result = 0; + els_reply->status = FC_CTELS_STATUS_REJECT; + els_reply->rjt_data.action = rjt_data[0]; + els_reply->rjt_data.reason_code = rjt_data[1]; + els_reply->rjt_data.reason_explanation = rjt_data[2]; + els_reply->rjt_data.vendor_unique = rjt_data[3]; + } else + rc = -EIO; + } else + rc = -EIO; + + if (iocb_status != IOCB_TIMEDOUT) + lpfc_els_free_iocb(phba, cmdiocbq); + + lpfc_sli_release_iocbq(phba, rspiocbq); + +out: + /* make error code available to userspace */ + job->reply->result = rc; + /* complete the job back to userspace */ + job->job_done(job); + + return 0; +} + +struct lpfc_ct_event { + struct list_head node; + int ref; + wait_queue_head_t wq; + + /* Event type and waiter identifiers */ + uint32_t type_mask; + uint32_t req_id; + uint32_t reg_id; + + /* next two flags are here for the auto-delete logic */ + unsigned long wait_time_stamp; + int waiting; + + /* seen and not seen events */ + struct list_head events_to_get; + struct list_head events_to_see; +}; + +struct event_data { + struct list_head node; + uint32_t type; + uint32_t immed_dat; + void *data; + uint32_t len; +}; + +static struct lpfc_ct_event * +lpfc_ct_event_new(int ev_reg_id, uint32_t ev_req_id) +{ + struct lpfc_ct_event *evt = kzalloc(sizeof(*evt), GFP_KERNEL); + if (!evt) + return NULL; + + INIT_LIST_HEAD(&evt->events_to_get); + INIT_LIST_HEAD(&evt->events_to_see); + evt->req_id = ev_req_id; + evt->reg_id = ev_reg_id; + evt->wait_time_stamp = jiffies; + init_waitqueue_head(&evt->wq); + + return evt; +} + +static void +lpfc_ct_event_free(struct lpfc_ct_event *evt) +{ + struct event_data *ed; + + list_del(&evt->node); + + while (!list_empty(&evt->events_to_get)) { + ed = list_entry(evt->events_to_get.next, typeof(*ed), node); + list_del(&ed->node); + kfree(ed->data); + kfree(ed); + } + + while (!list_empty(&evt->events_to_see)) { + ed = list_entry(evt->events_to_see.next, typeof(*ed), node); + list_del(&ed->node); + kfree(ed->data); + kfree(ed); + } + + kfree(evt); +} + +static inline void +lpfc_ct_event_ref(struct lpfc_ct_event *evt) +{ + evt->ref++; +} + +static inline void +lpfc_ct_event_unref(struct lpfc_ct_event *evt) +{ + if (--evt->ref < 0) + lpfc_ct_event_free(evt); +} + +#define SLI_CT_ELX_LOOPBACK 0x10 + +enum ELX_LOOPBACK_CMD { + ELX_LOOPBACK_XRI_SETUP, + ELX_LOOPBACK_DATA, +}; + +/** + * lpfc_bsg_ct_unsol_event - process an unsolicited CT command + * @phba: + * @pring: + * @piocbq: + * + * This function is called when an unsolicited CT command is received. It + * forwards the event to any processes registerd to receive CT events. + */ +void +lpfc_bsg_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + struct lpfc_iocbq *piocbq) +{ + uint32_t evt_req_id = 0; + uint32_t cmd; + uint32_t len; + struct lpfc_dmabuf *dmabuf = NULL; + struct lpfc_ct_event *evt; + struct event_data *evt_dat = NULL; + struct lpfc_iocbq *iocbq; + size_t offset = 0; + struct list_head head; + struct ulp_bde64 *bde; + dma_addr_t dma_addr; + int i; + struct lpfc_dmabuf *bdeBuf1 = piocbq->context2; + struct lpfc_dmabuf *bdeBuf2 = piocbq->context3; + struct lpfc_hbq_entry *hbqe; + struct lpfc_sli_ct_request *ct_req; + + INIT_LIST_HEAD(&head); + list_add_tail(&head, &piocbq->list); + + if (piocbq->iocb.ulpBdeCount == 0 || + piocbq->iocb.un.cont64[0].tus.f.bdeSize == 0) + goto error_ct_unsol_exit; + + if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) + dmabuf = bdeBuf1; + else { + dma_addr = getPaddr(piocbq->iocb.un.cont64[0].addrHigh, + piocbq->iocb.un.cont64[0].addrLow); + dmabuf = lpfc_sli_ringpostbuf_get(phba, pring, dma_addr); + } + + ct_req = (struct lpfc_sli_ct_request *)dmabuf->virt; + evt_req_id = ct_req->FsType; + cmd = ct_req->CommandResponse.bits.CmdRsp; + len = ct_req->CommandResponse.bits.Size; + if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) + lpfc_sli_ringpostbuf_put(phba, pring, dmabuf); + + mutex_lock(&phba->ct_event_mutex); + list_for_each_entry(evt, &phba->ct_ev_waiters, node) { + if (evt->req_id != evt_req_id) + continue; + + lpfc_ct_event_ref(evt); + + evt_dat = kzalloc(sizeof(*evt_dat), GFP_KERNEL); + if (!evt_dat) { + lpfc_ct_event_unref(evt); + lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, + "2614 Memory allocation failed for " + "CT event\n"); + break; + } + + mutex_unlock(&phba->ct_event_mutex); + + if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { + /* take accumulated byte count from the last iocbq */ + iocbq = list_entry(head.prev, typeof(*iocbq), list); + evt_dat->len = iocbq->iocb.unsli3.rcvsli3.acc_len; + } else { + list_for_each_entry(iocbq, &head, list) { + for (i = 0; i < iocbq->iocb.ulpBdeCount; i++) + evt_dat->len += + iocbq->iocb.un.cont64[i].tus.f.bdeSize; + } + } + + evt_dat->data = kzalloc(evt_dat->len, GFP_KERNEL); + if (!evt_dat->data) { + lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, + "2615 Memory allocation failed for " + "CT event data, size %d\n", + evt_dat->len); + kfree(evt_dat); + mutex_lock(&phba->ct_event_mutex); + lpfc_ct_event_unref(evt); + mutex_unlock(&phba->ct_event_mutex); + goto error_ct_unsol_exit; + } + + list_for_each_entry(iocbq, &head, list) { + if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { + bdeBuf1 = iocbq->context2; + bdeBuf2 = iocbq->context3; + } + for (i = 0; i < iocbq->iocb.ulpBdeCount; i++) { + int size = 0; + if (phba->sli3_options & + LPFC_SLI3_HBQ_ENABLED) { + if (i == 0) { + hbqe = (struct lpfc_hbq_entry *) + &iocbq->iocb.un.ulpWord[0]; + size = hbqe->bde.tus.f.bdeSize; + dmabuf = bdeBuf1; + } else if (i == 1) { + hbqe = (struct lpfc_hbq_entry *) + &iocbq->iocb.unsli3. + sli3Words[4]; + size = hbqe->bde.tus.f.bdeSize; + dmabuf = bdeBuf2; + } + if ((offset + size) > evt_dat->len) + size = evt_dat->len - offset; + } else { + size = iocbq->iocb.un.cont64[i]. + tus.f.bdeSize; + bde = &iocbq->iocb.un.cont64[i]; + dma_addr = getPaddr(bde->addrHigh, + bde->addrLow); + dmabuf = lpfc_sli_ringpostbuf_get(phba, + pring, dma_addr); + } + if (!dmabuf) { + lpfc_printf_log(phba, KERN_ERR, + LOG_LIBDFC, "2616 No dmabuf " + "found for iocbq 0x%p\n", + iocbq); + kfree(evt_dat->data); + kfree(evt_dat); + mutex_lock(&phba->ct_event_mutex); + lpfc_ct_event_unref(evt); + mutex_unlock(&phba->ct_event_mutex); + goto error_ct_unsol_exit; + } + memcpy((char *)(evt_dat->data) + offset, + dmabuf->virt, size); + offset += size; + if (evt_req_id != SLI_CT_ELX_LOOPBACK && + !(phba->sli3_options & + LPFC_SLI3_HBQ_ENABLED)) { + lpfc_sli_ringpostbuf_put(phba, pring, + dmabuf); + } else { + switch (cmd) { + case ELX_LOOPBACK_XRI_SETUP: + if (!(phba->sli3_options & + LPFC_SLI3_HBQ_ENABLED)) + lpfc_post_buffer(phba, + pring, + 1); + else + lpfc_in_buf_free(phba, + dmabuf); + break; + default: + if (!(phba->sli3_options & + LPFC_SLI3_HBQ_ENABLED)) + lpfc_post_buffer(phba, + pring, + 1); + break; + } + } + } + } + + mutex_lock(&phba->ct_event_mutex); + if (phba->sli_rev == LPFC_SLI_REV4) { + evt_dat->immed_dat = phba->ctx_idx; + phba->ctx_idx = (phba->ctx_idx + 1) % 64; + phba->ct_ctx[evt_dat->immed_dat].oxid = + piocbq->iocb.ulpContext; + phba->ct_ctx[evt_dat->immed_dat].SID = + piocbq->iocb.un.rcvels.remoteID; + } else + evt_dat->immed_dat = piocbq->iocb.ulpContext; + + evt_dat->type = FC_REG_CT_EVENT; + list_add(&evt_dat->node, &evt->events_to_see); + wake_up_interruptible(&evt->wq); + lpfc_ct_event_unref(evt); + if (evt_req_id == SLI_CT_ELX_LOOPBACK) + break; + } + mutex_unlock(&phba->ct_event_mutex); + +error_ct_unsol_exit: + if (!list_empty(&head)) + list_del(&head); + + return; +} + +/** + * lpfc_bsg_set_event - process a SET_EVENT bsg vendor command + * @job: SET_EVENT fc_bsg_job + */ +static int +lpfc_bsg_set_event(struct fc_bsg_job *job) +{ + struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; + struct lpfc_hba *phba = vport->phba; + struct set_ct_event *event_req; + struct lpfc_ct_event *evt; + int rc = 0; + + if (job->request_len < + sizeof(struct fc_bsg_request) + sizeof(struct set_ct_event)) { + lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, + "2612 Received SET_CT_EVENT below minimum " + "size\n"); + return -EINVAL; + } + + event_req = (struct set_ct_event *) + job->request->rqst_data.h_vendor.vendor_cmd; + + mutex_lock(&phba->ct_event_mutex); + list_for_each_entry(evt, &phba->ct_ev_waiters, node) { + if (evt->reg_id == event_req->ev_reg_id) { + lpfc_ct_event_ref(evt); + evt->wait_time_stamp = jiffies; + break; + } + } + mutex_unlock(&phba->ct_event_mutex); + + if (&evt->node == &phba->ct_ev_waiters) { + /* no event waiting struct yet - first call */ + evt = lpfc_ct_event_new(event_req->ev_reg_id, + event_req->ev_req_id); + if (!evt) { + lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, + "2617 Failed allocation of event " + "waiter\n"); + return -ENOMEM; + } + + mutex_lock(&phba->ct_event_mutex); + list_add(&evt->node, &phba->ct_ev_waiters); + lpfc_ct_event_ref(evt); + mutex_unlock(&phba->ct_event_mutex); + } + + evt->waiting = 1; + if (wait_event_interruptible(evt->wq, + !list_empty(&evt->events_to_see))) { + mutex_lock(&phba->ct_event_mutex); + lpfc_ct_event_unref(evt); /* release ref */ + lpfc_ct_event_unref(evt); /* delete */ + mutex_unlock(&phba->ct_event_mutex); + rc = -EINTR; + goto set_event_out; + } + + evt->wait_time_stamp = jiffies; + evt->waiting = 0; + + mutex_lock(&phba->ct_event_mutex); + list_move(evt->events_to_see.prev, &evt->events_to_get); + lpfc_ct_event_unref(evt); /* release ref */ + mutex_unlock(&phba->ct_event_mutex); + +set_event_out: + /* set_event carries no reply payload */ + job->reply->reply_payload_rcv_len = 0; + /* make error code available to userspace */ + job->reply->result = rc; + /* complete the job back to userspace */ + job->job_done(job); + + return 0; +} + +/** + * lpfc_bsg_get_event - process a GET_EVENT bsg vendor command + * @job: GET_EVENT fc_bsg_job + */ +static int +lpfc_bsg_get_event(struct fc_bsg_job *job) +{ + struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; + struct lpfc_hba *phba = vport->phba; + struct get_ct_event *event_req; + struct get_ct_event_reply *event_reply; + struct lpfc_ct_event *evt; + struct event_data *evt_dat = NULL; + int rc = 0; + + if (job->request_len < + sizeof(struct fc_bsg_request) + sizeof(struct get_ct_event)) { + lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, + "2613 Received GET_CT_EVENT request below " + "minimum size\n"); + return -EINVAL; + } + + event_req = (struct get_ct_event *) + job->request->rqst_data.h_vendor.vendor_cmd; + + event_reply = (struct get_ct_event_reply *) + job->reply->reply_data.vendor_reply.vendor_rsp; + + mutex_lock(&phba->ct_event_mutex); + list_for_each_entry(evt, &phba->ct_ev_waiters, node) { + if (evt->reg_id == event_req->ev_reg_id) { + if (list_empty(&evt->events_to_get)) + break; + lpfc_ct_event_ref(evt); + evt->wait_time_stamp = jiffies; + evt_dat = list_entry(evt->events_to_get.prev, + struct event_data, node); + list_del(&evt_dat->node); + break; + } + } + mutex_unlock(&phba->ct_event_mutex); + + if (!evt_dat) { + job->reply->reply_payload_rcv_len = 0; + rc = -ENOENT; + goto error_get_event_exit; + } + + if (evt_dat->len > job->reply_payload.payload_len) { + evt_dat->len = job->reply_payload.payload_len; + lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, + "2618 Truncated event data at %d " + "bytes\n", + job->reply_payload.payload_len); + } + + event_reply->immed_data = evt_dat->immed_dat; + + if (evt_dat->len > 0) + job->reply->reply_payload_rcv_len = + sg_copy_from_buffer(job->reply_payload.sg_list, + job->reply_payload.sg_cnt, + evt_dat->data, evt_dat->len); + else + job->reply->reply_payload_rcv_len = 0; + rc = 0; + + if (evt_dat) + kfree(evt_dat->data); + kfree(evt_dat); + mutex_lock(&phba->ct_event_mutex); + lpfc_ct_event_unref(evt); + mutex_unlock(&phba->ct_event_mutex); + +error_get_event_exit: + /* make error code available to userspace */ + job->reply->result = rc; + /* complete the job back to userspace */ + job->job_done(job); + + return rc; +} + +/** + * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job + * @job: fc_bsg_job to handle + */ +static int +lpfc_bsg_hst_vendor(struct fc_bsg_job *job) +{ + int command = job->request->rqst_data.h_vendor.vendor_cmd[0]; + + switch (command) { + case LPFC_BSG_VENDOR_SET_CT_EVENT: + return lpfc_bsg_set_event(job); + break; + + case LPFC_BSG_VENDOR_GET_CT_EVENT: + return lpfc_bsg_get_event(job); + break; + + default: + return -EINVAL; + } +} + +/** + * lpfc_bsg_request - handle a bsg request from the FC transport + * @job: fc_bsg_job to handle + */ +int +lpfc_bsg_request(struct fc_bsg_job *job) +{ + uint32_t msgcode; + int rc = -EINVAL; + + msgcode = job->request->msgcode; + + switch (msgcode) { + case FC_BSG_HST_VENDOR: + rc = lpfc_bsg_hst_vendor(job); + break; + case FC_BSG_RPT_ELS: + rc = lpfc_bsg_rport_els(job); + break; + case FC_BSG_RPT_CT: + rc = lpfc_bsg_rport_ct(job); + break; + default: + break; + } + + return rc; +} + +/** + * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport + * @job: fc_bsg_job that has timed out + * + * This function just aborts the job's IOCB. The aborted IOCB will return to + * the waiting function which will handle passing the error back to userspace + */ +int +lpfc_bsg_timeout(struct fc_bsg_job *job) +{ + struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; + struct lpfc_hba *phba = vport->phba; + struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)job->dd_data; + struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; + + if (cmdiocb) + lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb); + + return 0; +} diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h index d2a9229..0830f37 100644 --- a/drivers/scsi/lpfc/lpfc_crtn.h +++ b/drivers/scsi/lpfc/lpfc_crtn.h @@ -21,9 +21,11 @@ typedef int (*node_filter)(struct lpfc_nodelist *, void *); struct fc_rport; -void lpfc_dump_mem(struct lpfc_hba *, LPFC_MBOXQ_t *, uint16_t); +void lpfc_down_link(struct lpfc_hba *, LPFC_MBOXQ_t *); +void lpfc_sli_read_link_ste(struct lpfc_hba *); +void lpfc_dump_mem(struct lpfc_hba *, LPFC_MBOXQ_t *, uint16_t, uint16_t); void lpfc_dump_wakeup_param(struct lpfc_hba *, LPFC_MBOXQ_t *); -void lpfc_dump_static_vport(struct lpfc_hba *, LPFC_MBOXQ_t *, uint16_t); +int lpfc_dump_static_vport(struct lpfc_hba *, LPFC_MBOXQ_t *, uint16_t); int lpfc_dump_fcoe_param(struct lpfc_hba *, struct lpfcMboxq *); void lpfc_read_nv(struct lpfc_hba *, LPFC_MBOXQ_t *); void lpfc_config_async(struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t); @@ -135,6 +137,9 @@ int lpfc_els_disc_adisc(struct lpfc_vport *); int lpfc_els_disc_plogi(struct lpfc_vport *); void lpfc_els_timeout(unsigned long); void lpfc_els_timeout_handler(struct lpfc_vport *); +struct lpfc_iocbq *lpfc_prep_els_iocb(struct lpfc_vport *, uint8_t, uint16_t, + uint8_t, struct lpfc_nodelist *, + uint32_t, uint32_t); void lpfc_hb_timeout_handler(struct lpfc_hba *); void lpfc_ct_unsol_event(struct lpfc_hba *, struct lpfc_sli_ring *, @@ -182,11 +187,12 @@ int lpfc_mbox_dev_check(struct lpfc_hba *); int lpfc_mbox_tmo_val(struct lpfc_hba *, int); void lpfc_init_vfi(struct lpfcMboxq *, struct lpfc_vport *); void lpfc_reg_vfi(struct lpfcMboxq *, struct lpfc_vport *, dma_addr_t); -void lpfc_init_vpi(struct lpfcMboxq *, uint16_t); +void lpfc_init_vpi(struct lpfc_hba *, struct lpfcMboxq *, uint16_t); void lpfc_unreg_vfi(struct lpfcMboxq *, uint16_t); void lpfc_reg_fcfi(struct lpfc_hba *, struct lpfcMboxq *); void lpfc_unreg_fcfi(struct lpfcMboxq *, uint16_t); void lpfc_resume_rpi(struct lpfcMboxq *, struct lpfc_nodelist *); +int lpfc_check_pending_fcoe_event(struct lpfc_hba *, uint8_t); void lpfc_config_hbq(struct lpfc_hba *, uint32_t, struct lpfc_hbq_init *, uint32_t , LPFC_MBOXQ_t *); @@ -234,6 +240,7 @@ void lpfc_sli_def_mbox_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *); int lpfc_sli_issue_iocb(struct lpfc_hba *, uint32_t, struct lpfc_iocbq *, uint32_t); void lpfc_sli_pcimem_bcopy(void *, void *, uint32_t); +void lpfc_sli_bemem_bcopy(void *, void *, uint32_t); void lpfc_sli_abort_iocb_ring(struct lpfc_hba *, struct lpfc_sli_ring *); void lpfc_sli_flush_fcp_rings(struct lpfc_hba *); int lpfc_sli_ringpostbuf_put(struct lpfc_hba *, struct lpfc_sli_ring *, @@ -360,3 +367,8 @@ void lpfc_start_fdiscs(struct lpfc_hba *phba); #define HBA_EVENT_LINK_UP 2 #define HBA_EVENT_LINK_DOWN 3 +/* functions to support SGIOv4/bsg interface */ +int lpfc_bsg_request(struct fc_bsg_job *); +int lpfc_bsg_timeout(struct fc_bsg_job *); +void lpfc_bsg_ct_unsol_event(struct lpfc_hba *, struct lpfc_sli_ring *, + struct lpfc_iocbq *); diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c index 0e532f0..9df7ed3 100644 --- a/drivers/scsi/lpfc/lpfc_ct.c +++ b/drivers/scsi/lpfc/lpfc_ct.c @@ -97,6 +97,8 @@ lpfc_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, struct list_head head; struct lpfc_dmabuf *bdeBuf; + lpfc_bsg_ct_unsol_event(phba, pring, piocbq); + if (unlikely(icmd->ulpStatus == IOSTAT_NEED_BUFFER)) { lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ); } else if ((icmd->ulpStatus == IOSTAT_LOCAL_REJECT) && diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index f72fdf2..45337cd 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -146,7 +146,7 @@ lpfc_els_chk_latt(struct lpfc_vport *vport) * Pointer to the newly allocated/prepared els iocb data structure * NULL - when els iocb data structure allocation/preparation failed **/ -static struct lpfc_iocbq * +struct lpfc_iocbq * lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp, uint16_t cmdSize, uint8_t retry, struct lpfc_nodelist *ndlp, uint32_t did, diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index ed46b24..e6a47e2 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -61,6 +61,7 @@ static uint8_t lpfcAlpaArray[] = { static void lpfc_disc_timeout_handler(struct lpfc_vport *); static void lpfc_disc_flush_list(struct lpfc_vport *vport); +static void lpfc_unregister_fcfi_cmpl(struct lpfc_hba *, LPFC_MBOXQ_t *); void lpfc_terminate_rport_io(struct fc_rport *rport) @@ -1009,9 +1010,15 @@ lpfc_mbx_cmpl_reg_fcfi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) spin_lock_irqsave(&phba->hbalock, flags); phba->fcf.fcf_flag |= FCF_REGISTERED; spin_unlock_irqrestore(&phba->hbalock, flags); + /* If there is a pending FCoE event, restart FCF table scan. */ + if (lpfc_check_pending_fcoe_event(phba, 1)) { + mempool_free(mboxq, phba->mbox_mem_pool); + return; + } if (vport->port_state != LPFC_FLOGI) { spin_lock_irqsave(&phba->hbalock, flags); phba->fcf.fcf_flag |= (FCF_DISCOVERED | FCF_IN_USE); + phba->hba_flag &= ~FCF_DISC_INPROGRESS; spin_unlock_irqrestore(&phba->hbalock, flags); lpfc_initial_flogi(vport); } @@ -1054,6 +1061,39 @@ lpfc_fab_name_match(uint8_t *fab_name, struct fcf_record *new_fcf_record) } /** + * lpfc_sw_name_match - Check if the fcf switch name match. + * @fab_name: pointer to fabric name. + * @new_fcf_record: pointer to fcf record. + * + * This routine compare the fcf record's switch name with provided + * switch name. If the switch name are identical this function + * returns 1 else return 0. + **/ +static uint32_t +lpfc_sw_name_match(uint8_t *sw_name, struct fcf_record *new_fcf_record) +{ + if ((sw_name[0] == + bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record)) && + (sw_name[1] == + bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record)) && + (sw_name[2] == + bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record)) && + (sw_name[3] == + bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record)) && + (sw_name[4] == + bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record)) && + (sw_name[5] == + bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record)) && + (sw_name[6] == + bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record)) && + (sw_name[7] == + bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record))) + return 1; + else + return 0; +} + +/** * lpfc_mac_addr_match - Check if the fcf mac address match. * @phba: pointer to lpfc hba data structure. * @new_fcf_record: pointer to fcf record. @@ -1123,6 +1163,22 @@ lpfc_copy_fcf_record(struct lpfc_hba *phba, struct fcf_record *new_fcf_record) bf_get(lpfc_fcf_record_mac_5, new_fcf_record); phba->fcf.fcf_indx = bf_get(lpfc_fcf_record_fcf_index, new_fcf_record); phba->fcf.priority = new_fcf_record->fip_priority; + phba->fcf.switch_name[0] = + bf_get(lpfc_fcf_record_switch_name_0, new_fcf_record); + phba->fcf.switch_name[1] = + bf_get(lpfc_fcf_record_switch_name_1, new_fcf_record); + phba->fcf.switch_name[2] = + bf_get(lpfc_fcf_record_switch_name_2, new_fcf_record); + phba->fcf.switch_name[3] = + bf_get(lpfc_fcf_record_switch_name_3, new_fcf_record); + phba->fcf.switch_name[4] = + bf_get(lpfc_fcf_record_switch_name_4, new_fcf_record); + phba->fcf.switch_name[5] = + bf_get(lpfc_fcf_record_switch_name_5, new_fcf_record); + phba->fcf.switch_name[6] = + bf_get(lpfc_fcf_record_switch_name_6, new_fcf_record); + phba->fcf.switch_name[7] = + bf_get(lpfc_fcf_record_switch_name_7, new_fcf_record); } /** @@ -1150,6 +1206,7 @@ lpfc_register_fcf(struct lpfc_hba *phba) /* The FCF is already registered, start discovery */ if (phba->fcf.fcf_flag & FCF_REGISTERED) { phba->fcf.fcf_flag |= (FCF_DISCOVERED | FCF_IN_USE); + phba->hba_flag &= ~FCF_DISC_INPROGRESS; spin_unlock_irqrestore(&phba->hbalock, flags); if (phba->pport->port_state != LPFC_FLOGI) lpfc_initial_flogi(phba->pport); @@ -1239,9 +1296,12 @@ lpfc_match_fcf_conn_list(struct lpfc_hba *phba, if ((conn_entry->conn_rec.flags & FCFCNCT_FBNM_VALID) && !lpfc_fab_name_match(conn_entry->conn_rec.fabric_name, - new_fcf_record)) + new_fcf_record)) + continue; + if ((conn_entry->conn_rec.flags & FCFCNCT_SWNM_VALID) && + !lpfc_sw_name_match(conn_entry->conn_rec.switch_name, + new_fcf_record)) continue; - if (conn_entry->conn_rec.flags & FCFCNCT_VLAN_VALID) { /* * If the vlan bit map does not have the bit set for the @@ -1336,6 +1396,60 @@ lpfc_match_fcf_conn_list(struct lpfc_hba *phba, } /** + * lpfc_check_pending_fcoe_event - Check if there is pending fcoe event. + * @phba: pointer to lpfc hba data structure. + * @unreg_fcf: Unregister FCF if FCF table need to be re-scaned. + * + * This function check if there is any fcoe event pending while driver + * scan FCF entries. If there is any pending event, it will restart the + * FCF saning and return 1 else return 0. + */ +int +lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf) +{ + LPFC_MBOXQ_t *mbox; + int rc; + /* + * If the Link is up and no FCoE events while in the + * FCF discovery, no need to restart FCF discovery. + */ + if ((phba->link_state >= LPFC_LINK_UP) && + (phba->fcoe_eventtag == phba->fcoe_eventtag_at_fcf_scan)) + return 0; + + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_AVAILABLE; + spin_unlock_irq(&phba->hbalock); + + if (phba->link_state >= LPFC_LINK_UP) + lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST); + + if (unreg_fcf) { + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_REGISTERED; + spin_unlock_irq(&phba->hbalock); + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) { + lpfc_printf_log(phba, KERN_ERR, + LOG_DISCOVERY|LOG_MBOX, + "2610 UNREG_FCFI mbox allocation failed\n"); + return 1; + } + lpfc_unreg_fcfi(mbox, phba->fcf.fcfi); + mbox->vport = phba->pport; + mbox->mbox_cmpl = lpfc_unregister_fcfi_cmpl; + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) { + lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY|LOG_MBOX, + "2611 UNREG_FCFI issue mbox failed\n"); + mempool_free(mbox, phba->mbox_mem_pool); + } + } + + return 1; +} + +/** * lpfc_mbx_cmpl_read_fcf_record - Completion handler for read_fcf mbox. * @phba: pointer to lpfc hba data structure. * @mboxq: pointer to mailbox object. @@ -1367,6 +1481,12 @@ lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) unsigned long flags; uint16_t vlan_id; + /* If there is pending FCoE event restart FCF table scan */ + if (lpfc_check_pending_fcoe_event(phba, 0)) { + lpfc_sli4_mbox_cmd_free(phba, mboxq); + return; + } + /* Get the first SGE entry from the non-embedded DMA memory. This * routine only uses a single SGE. */ @@ -1424,7 +1544,9 @@ lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) spin_lock_irqsave(&phba->hbalock, flags); if (phba->fcf.fcf_flag & FCF_IN_USE) { if (lpfc_fab_name_match(phba->fcf.fabric_name, - new_fcf_record) && + new_fcf_record) && + lpfc_sw_name_match(phba->fcf.switch_name, + new_fcf_record) && lpfc_mac_addr_match(phba, new_fcf_record)) { phba->fcf.fcf_flag |= FCF_AVAILABLE; spin_unlock_irqrestore(&phba->hbalock, flags); @@ -1464,9 +1586,9 @@ lpfc_mbx_cmpl_read_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) * If there is a record with lower priority value for * the current FCF, use that record. */ - if (lpfc_fab_name_match(phba->fcf.fabric_name, new_fcf_record) - && (new_fcf_record->fip_priority < - phba->fcf.priority)) { + if (lpfc_fab_name_match(phba->fcf.fabric_name, + new_fcf_record) && + (new_fcf_record->fip_priority < phba->fcf.priority)) { /* Use this FCF record */ lpfc_copy_fcf_record(phba, new_fcf_record); phba->fcf.addr_mode = addr_mode; @@ -1512,6 +1634,39 @@ out: } /** + * lpfc_init_vpi_cmpl - Completion handler for init_vpi mbox command. + * @phba: pointer to lpfc hba data structure. + * @mboxq: pointer to mailbox data structure. + * + * This function handles completion of init vpi mailbox command. + */ +static void +lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) +{ + struct lpfc_vport *vport = mboxq->vport; + if (mboxq->u.mb.mbxStatus) { + lpfc_printf_vlog(vport, KERN_ERR, + LOG_MBOX, + "2609 Init VPI mailbox failed 0x%x\n", + mboxq->u.mb.mbxStatus); + mempool_free(mboxq, phba->mbox_mem_pool); + lpfc_vport_set_state(vport, FC_VPORT_FAILED); + return; + } + vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI; + + if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) + lpfc_initial_fdisc(vport); + else { + lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); + lpfc_printf_vlog(vport, KERN_ERR, + LOG_ELS, + "2606 No NPIV Fabric support\n"); + } + return; +} + +/** * lpfc_start_fdiscs - send fdiscs for each vports on this port. * @phba: pointer to lpfc hba data structure. * @@ -1523,6 +1678,8 @@ lpfc_start_fdiscs(struct lpfc_hba *phba) { struct lpfc_vport **vports; int i; + LPFC_MBOXQ_t *mboxq; + int rc; vports = lpfc_create_vport_work_array(phba); if (vports != NULL) { @@ -1540,6 +1697,29 @@ lpfc_start_fdiscs(struct lpfc_hba *phba) FC_VPORT_LINKDOWN); continue; } + if (vports[i]->fc_flag & FC_VPORT_NEEDS_INIT_VPI) { + mboxq = mempool_alloc(phba->mbox_mem_pool, + GFP_KERNEL); + if (!mboxq) { + lpfc_printf_vlog(vports[i], KERN_ERR, + LOG_MBOX, "2607 Failed to allocate " + "init_vpi mailbox\n"); + continue; + } + lpfc_init_vpi(phba, mboxq, vports[i]->vpi); + mboxq->vport = vports[i]; + mboxq->mbox_cmpl = lpfc_init_vpi_cmpl; + rc = lpfc_sli_issue_mbox(phba, mboxq, + MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) { + lpfc_printf_vlog(vports[i], KERN_ERR, + LOG_MBOX, "2608 Failed to issue " + "init_vpi mailbox\n"); + mempool_free(mboxq, + phba->mbox_mem_pool); + } + continue; + } if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) lpfc_initial_fdisc(vports[i]); else { @@ -1769,6 +1949,7 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la) goto out; } } else { + vport->port_state = LPFC_VPORT_UNKNOWN; /* * Add the driver's default FCF record at FCF index 0 now. This * is phase 1 implementation that support FCF index 0 and driver @@ -1804,6 +1985,12 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la) * The driver is expected to do FIP/FCF. Call the port * and get the FCF Table. */ + spin_lock_irq(&phba->hbalock); + if (phba->hba_flag & FCF_DISC_INPROGRESS) { + spin_unlock_irq(&phba->hbalock); + return; + } + spin_unlock_irq(&phba->hbalock); rc = lpfc_sli4_read_fcf_record(phba, LPFC_FCOE_FCF_GET_FIRST); if (rc) @@ -2113,13 +2300,15 @@ lpfc_create_static_vport(struct lpfc_hba *phba) LPFC_MBOXQ_t *pmb = NULL; MAILBOX_t *mb; struct static_vport_info *vport_info; - int rc, i; + int rc = 0, i; struct fc_vport_identifiers vport_id; struct fc_vport *new_fc_vport; struct Scsi_Host *shost; struct lpfc_vport *vport; uint16_t offset = 0; uint8_t *vport_buff; + struct lpfc_dmabuf *mp; + uint32_t byte_count = 0; pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { @@ -2142,7 +2331,9 @@ lpfc_create_static_vport(struct lpfc_hba *phba) vport_buff = (uint8_t *) vport_info; do { - lpfc_dump_static_vport(phba, pmb, offset); + if (lpfc_dump_static_vport(phba, pmb, offset)) + goto out; + pmb->vport = phba->pport; rc = lpfc_sli_issue_mbox_wait(phba, pmb, LPFC_MBOX_TMO); @@ -2155,17 +2346,30 @@ lpfc_create_static_vport(struct lpfc_hba *phba) goto out; } - if (mb->un.varDmp.word_cnt > - sizeof(struct static_vport_info) - offset) - mb->un.varDmp.word_cnt = - sizeof(struct static_vport_info) - offset; - - lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, - vport_buff + offset, - mb->un.varDmp.word_cnt); - offset += mb->un.varDmp.word_cnt; + if (phba->sli_rev == LPFC_SLI_REV4) { + byte_count = pmb->u.mqe.un.mb_words[5]; + mp = (struct lpfc_dmabuf *) pmb->context2; + if (byte_count > sizeof(struct static_vport_info) - + offset) + byte_count = sizeof(struct static_vport_info) + - offset; + memcpy(vport_buff + offset, mp->virt, byte_count); + offset += byte_count; + } else { + if (mb->un.varDmp.word_cnt > + sizeof(struct static_vport_info) - offset) + mb->un.varDmp.word_cnt = + sizeof(struct static_vport_info) + - offset; + byte_count = mb->un.varDmp.word_cnt; + lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, + vport_buff + offset, + byte_count); + + offset += byte_count; + } - } while (mb->un.varDmp.word_cnt && + } while (byte_count && offset < sizeof(struct static_vport_info)); @@ -2198,7 +2402,7 @@ lpfc_create_static_vport(struct lpfc_hba *phba) if (!new_fc_vport) { lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "0546 lpfc_create_static_vport failed to" - " create vport \n"); + " create vport\n"); continue; } @@ -2207,16 +2411,15 @@ lpfc_create_static_vport(struct lpfc_hba *phba) } out: - /* - * If this is timed out command, setting NULL to context2 tell SLI - * layer not to use this buffer. - */ - spin_lock_irq(&phba->hbalock); - pmb->context2 = NULL; - spin_unlock_irq(&phba->hbalock); kfree(vport_info); - if (rc != MBX_TIMEOUT) + if (rc != MBX_TIMEOUT) { + if (pmb->context2) { + mp = (struct lpfc_dmabuf *) pmb->context2; + lpfc_mbuf_free(phba, mp->virt, mp->phys); + kfree(mp); + } mempool_free(pmb, phba->mbox_mem_pool); + } return; } @@ -4360,7 +4563,7 @@ lpfc_read_fcoe_param(struct lpfc_hba *phba, fcoe_param_hdr = (struct lpfc_fip_param_hdr *) buff; fcoe_param = (struct lpfc_fcoe_params *) - buff + sizeof(struct lpfc_fip_param_hdr); + (buff + sizeof(struct lpfc_fip_param_hdr)); if ((fcoe_param_hdr->parm_version != FIPP_VERSION) || (fcoe_param_hdr->length != FCOE_PARAM_LENGTH)) diff --git a/drivers/scsi/lpfc/lpfc_hw.h b/drivers/scsi/lpfc/lpfc_hw.h index 8a3a026..ccb2672 100644 --- a/drivers/scsi/lpfc/lpfc_hw.h +++ b/drivers/scsi/lpfc/lpfc_hw.h @@ -2496,8 +2496,8 @@ typedef struct { #define DMP_VPORT_REGION_SIZE 0x200 #define DMP_MBOX_OFFSET_WORD 0x5 -#define DMP_REGION_FCOEPARAM 0x17 /* fcoe param region */ -#define DMP_FCOEPARAM_RGN_SIZE 0x400 +#define DMP_REGION_23 0x17 /* fcoe param and port state region */ +#define DMP_RGN23_SIZE 0x400 #define WAKE_UP_PARMS_REGION_ID 4 #define WAKE_UP_PARMS_WORD_SIZE 15 diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h index 2995d12..3689eee0 100644 --- a/drivers/scsi/lpfc/lpfc_hw4.h +++ b/drivers/scsi/lpfc/lpfc_hw4.h @@ -52,6 +52,31 @@ struct dma_address { uint32_t addr_hi; }; +#define LPFC_SLIREV_CONF_WORD 0x58 +struct lpfc_sli_intf { + uint32_t word0; +#define lpfc_sli_intf_iftype_MASK 0x00000007 +#define lpfc_sli_intf_iftype_SHIFT 0 +#define lpfc_sli_intf_iftype_WORD word0 +#define lpfc_sli_intf_rev_MASK 0x0000000f +#define lpfc_sli_intf_rev_SHIFT 4 +#define lpfc_sli_intf_rev_WORD word0 +#define LPFC_SLIREV_CONF_SLI4 4 +#define lpfc_sli_intf_family_MASK 0x000000ff +#define lpfc_sli_intf_family_SHIFT 8 +#define lpfc_sli_intf_family_WORD word0 +#define lpfc_sli_intf_feat1_MASK 0x000000ff +#define lpfc_sli_intf_feat1_SHIFT 16 +#define lpfc_sli_intf_feat1_WORD word0 +#define lpfc_sli_intf_feat2_MASK 0x0000001f +#define lpfc_sli_intf_feat2_SHIFT 24 +#define lpfc_sli_intf_feat2_WORD word0 +#define lpfc_sli_intf_valid_MASK 0x00000007 +#define lpfc_sli_intf_valid_SHIFT 29 +#define lpfc_sli_intf_valid_WORD word0 +#define LPFC_SLI_INTF_VALID 6 +}; + #define LPFC_SLI4_BAR0 1 #define LPFC_SLI4_BAR1 2 #define LPFC_SLI4_BAR2 4 @@ -1181,6 +1206,32 @@ struct fcf_record { #define lpfc_fcf_record_fcf_state_MASK 0x0000FFFF #define lpfc_fcf_record_fcf_state_WORD word8 uint8_t vlan_bitmap[512]; + uint32_t word137; +#define lpfc_fcf_record_switch_name_0_SHIFT 0 +#define lpfc_fcf_record_switch_name_0_MASK 0x000000FF +#define lpfc_fcf_record_switch_name_0_WORD word137 +#define lpfc_fcf_record_switch_name_1_SHIFT 8 +#define lpfc_fcf_record_switch_name_1_MASK 0x000000FF +#define lpfc_fcf_record_switch_name_1_WORD word137 +#define lpfc_fcf_record_switch_name_2_SHIFT 16 +#define lpfc_fcf_record_switch_name_2_MASK 0x000000FF +#define lpfc_fcf_record_switch_name_2_WORD word137 +#define lpfc_fcf_record_switch_name_3_SHIFT 24 +#define lpfc_fcf_record_switch_name_3_MASK 0x000000FF +#define lpfc_fcf_record_switch_name_3_WORD word137 + uint32_t word138; +#define lpfc_fcf_record_switch_name_4_SHIFT 0 +#define lpfc_fcf_record_switch_name_4_MASK 0x000000FF +#define lpfc_fcf_record_switch_name_4_WORD word138 +#define lpfc_fcf_record_switch_name_5_SHIFT 8 +#define lpfc_fcf_record_switch_name_5_MASK 0x000000FF +#define lpfc_fcf_record_switch_name_5_WORD word138 +#define lpfc_fcf_record_switch_name_6_SHIFT 16 +#define lpfc_fcf_record_switch_name_6_MASK 0x000000FF +#define lpfc_fcf_record_switch_name_6_WORD word138 +#define lpfc_fcf_record_switch_name_7_SHIFT 24 +#define lpfc_fcf_record_switch_name_7_MASK 0x000000FF +#define lpfc_fcf_record_switch_name_7_WORD word138 }; struct lpfc_mbx_read_fcf_tbl { @@ -1385,20 +1436,17 @@ struct lpfc_mbx_unreg_vfi { struct lpfc_mbx_resume_rpi { uint32_t word1; -#define lpfc_resume_rpi_rpi_SHIFT 0 -#define lpfc_resume_rpi_rpi_MASK 0x0000FFFF -#define lpfc_resume_rpi_rpi_WORD word1 +#define lpfc_resume_rpi_index_SHIFT 0 +#define lpfc_resume_rpi_index_MASK 0x0000FFFF +#define lpfc_resume_rpi_index_WORD word1 +#define lpfc_resume_rpi_ii_SHIFT 30 +#define lpfc_resume_rpi_ii_MASK 0x00000003 +#define lpfc_resume_rpi_ii_WORD word1 +#define RESUME_INDEX_RPI 0 +#define RESUME_INDEX_VPI 1 +#define RESUME_INDEX_VFI 2 +#define RESUME_INDEX_FCFI 3 uint32_t event_tag; - uint32_t word3_rsvd; - uint32_t word4_rsvd; - uint32_t word5_rsvd; - uint32_t word6; -#define lpfc_resume_rpi_vpi_SHIFT 0 -#define lpfc_resume_rpi_vpi_MASK 0x0000FFFF -#define lpfc_resume_rpi_vpi_WORD word6 -#define lpfc_resume_rpi_vfi_SHIFT 16 -#define lpfc_resume_rpi_vfi_MASK 0x0000FFFF -#define lpfc_resume_rpi_vfi_WORD word6 }; #define REG_FCF_INVALID_QID 0xFFFF diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index fc67cc6..562d8ce 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -211,7 +211,7 @@ lpfc_config_port_prep(struct lpfc_hba *phba) goto out_free_mbox; do { - lpfc_dump_mem(phba, pmb, offset); + lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD); rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); if (rc != MBX_SUCCESS) { @@ -425,6 +425,9 @@ lpfc_config_port_post(struct lpfc_hba *phba) return -EIO; } + /* Check if the port is disabled */ + lpfc_sli_read_link_ste(phba); + /* Reset the DFT_HBA_Q_DEPTH to the max xri */ if (phba->cfg_hba_queue_depth > (mb->un.varRdConfig.max_xri+1)) phba->cfg_hba_queue_depth = @@ -524,27 +527,46 @@ lpfc_config_port_post(struct lpfc_hba *phba) /* Set up error attention (ERATT) polling timer */ mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL); - lpfc_init_link(phba, pmb, phba->cfg_topology, phba->cfg_link_speed); - pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; - lpfc_set_loopback_flag(phba); - rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); - if (rc != MBX_SUCCESS) { - lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + if (phba->hba_flag & LINK_DISABLED) { + lpfc_printf_log(phba, + KERN_ERR, LOG_INIT, + "2598 Adapter Link is disabled.\n"); + lpfc_down_link(phba, pmb); + pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); + if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) { + lpfc_printf_log(phba, + KERN_ERR, LOG_INIT, + "2599 Adapter failed to issue DOWN_LINK" + " mbox command rc 0x%x\n", rc); + + mempool_free(pmb, phba->mbox_mem_pool); + return -EIO; + } + } else { + lpfc_init_link(phba, pmb, phba->cfg_topology, + phba->cfg_link_speed); + pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + lpfc_set_loopback_flag(phba); + rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); + if (rc != MBX_SUCCESS) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0454 Adapter failed to init, mbxCmd x%x " "INIT_LINK, mbxStatus x%x\n", mb->mbxCommand, mb->mbxStatus); - /* Clear all interrupt enable conditions */ - writel(0, phba->HCregaddr); - readl(phba->HCregaddr); /* flush */ - /* Clear all pending interrupts */ - writel(0xffffffff, phba->HAregaddr); - readl(phba->HAregaddr); /* flush */ + /* Clear all interrupt enable conditions */ + writel(0, phba->HCregaddr); + readl(phba->HCregaddr); /* flush */ + /* Clear all pending interrupts */ + writel(0xffffffff, phba->HAregaddr); + readl(phba->HAregaddr); /* flush */ - phba->link_state = LPFC_HBA_ERROR; - if (rc != MBX_BUSY) - mempool_free(pmb, phba->mbox_mem_pool); - return -EIO; + phba->link_state = LPFC_HBA_ERROR; + if (rc != MBX_BUSY) + mempool_free(pmb, phba->mbox_mem_pool); + return -EIO; + } } /* MBOX buffer will be freed in mbox compl */ pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); @@ -558,7 +580,7 @@ lpfc_config_port_post(struct lpfc_hba *phba) KERN_ERR, LOG_INIT, "0456 Adapter failed to issue " - "ASYNCEVT_ENABLE mbox status x%x \n.", + "ASYNCEVT_ENABLE mbox status x%x\n", rc); mempool_free(pmb, phba->mbox_mem_pool); } @@ -572,7 +594,7 @@ lpfc_config_port_post(struct lpfc_hba *phba) if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0435 Adapter failed " - "to get Option ROM version status x%x\n.", rc); + "to get Option ROM version status x%x\n", rc); mempool_free(pmb, phba->mbox_mem_pool); } @@ -2133,6 +2155,8 @@ lpfc_online(struct lpfc_hba *phba) vports[i]->fc_flag &= ~FC_OFFLINE_MODE; if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI; + if (phba->sli_rev == LPFC_SLI_REV4) + vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; spin_unlock_irq(shost->host_lock); } lpfc_destroy_vport_work_array(phba, vports); @@ -2807,6 +2831,7 @@ lpfc_sli4_async_link_evt(struct lpfc_hba *phba, att_type = lpfc_sli4_parse_latt_type(phba, acqe_link); if (att_type != AT_LINK_DOWN && att_type != AT_LINK_UP) return; + phba->fcoe_eventtag = acqe_link->event_tag; pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { lpfc_printf_log(phba, KERN_ERR, LOG_SLI, @@ -2894,18 +2919,20 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba, uint8_t event_type = bf_get(lpfc_acqe_fcoe_event_type, acqe_fcoe); int rc; + phba->fcoe_eventtag = acqe_fcoe->event_tag; switch (event_type) { case LPFC_FCOE_EVENT_TYPE_NEW_FCF: lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY, - "2546 New FCF found index 0x%x tag 0x%x \n", + "2546 New FCF found index 0x%x tag 0x%x\n", acqe_fcoe->fcf_index, acqe_fcoe->event_tag); /* - * If the current FCF is in discovered state, - * do nothing. + * If the current FCF is in discovered state, or + * FCF discovery is in progress do nothing. */ spin_lock_irq(&phba->hbalock); - if (phba->fcf.fcf_flag & FCF_DISCOVERED) { + if ((phba->fcf.fcf_flag & FCF_DISCOVERED) || + (phba->hba_flag & FCF_DISC_INPROGRESS)) { spin_unlock_irq(&phba->hbalock); break; } @@ -2922,7 +2949,7 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba, case LPFC_FCOE_EVENT_TYPE_FCF_TABLE_FULL: lpfc_printf_log(phba, KERN_ERR, LOG_SLI, - "2548 FCF Table full count 0x%x tag 0x%x \n", + "2548 FCF Table full count 0x%x tag 0x%x\n", bf_get(lpfc_acqe_fcoe_fcf_count, acqe_fcoe), acqe_fcoe->event_tag); break; @@ -2930,7 +2957,7 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba, case LPFC_FCOE_EVENT_TYPE_FCF_DEAD: lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY, "2549 FCF disconnected fron network index 0x%x" - " tag 0x%x \n", acqe_fcoe->fcf_index, + " tag 0x%x\n", acqe_fcoe->fcf_index, acqe_fcoe->event_tag); /* If the event is not for currently used fcf do nothing */ if (phba->fcf.fcf_indx != acqe_fcoe->fcf_index) @@ -4130,8 +4157,7 @@ lpfc_hba_alloc(struct pci_dev *pdev) /* Allocate memory for HBA structure */ phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL); if (!phba) { - lpfc_printf_log(phba, KERN_ERR, LOG_INIT, - "1417 Failed to allocate hba struct.\n"); + dev_err(&pdev->dev, "failed to allocate hba struct\n"); return NULL; } @@ -4145,6 +4171,9 @@ lpfc_hba_alloc(struct pci_dev *pdev) return NULL; } + mutex_init(&phba->ct_event_mutex); + INIT_LIST_HEAD(&phba->ct_ev_waiters); + return phba; } @@ -4489,23 +4518,6 @@ lpfc_sli4_post_status_check(struct lpfc_hba *phba) if (!phba->sli4_hba.STAregaddr) return -ENODEV; - /* With uncoverable error, log the error message and return error */ - onlnreg0 = readl(phba->sli4_hba.ONLINE0regaddr); - onlnreg1 = readl(phba->sli4_hba.ONLINE1regaddr); - if ((onlnreg0 != LPFC_ONLINE_NERR) || (onlnreg1 != LPFC_ONLINE_NERR)) { - uerrlo_reg.word0 = readl(phba->sli4_hba.UERRLOregaddr); - uerrhi_reg.word0 = readl(phba->sli4_hba.UERRHIregaddr); - if (uerrlo_reg.word0 || uerrhi_reg.word0) { - lpfc_printf_log(phba, KERN_ERR, LOG_INIT, - "1422 HBA Unrecoverable error: " - "uerr_lo_reg=0x%x, uerr_hi_reg=0x%x, " - "online0_reg=0x%x, online1_reg=0x%x\n", - uerrlo_reg.word0, uerrhi_reg.word0, - onlnreg0, onlnreg1); - } - return -ENODEV; - } - /* Wait up to 30 seconds for the SLI Port POST done and ready */ for (i = 0; i < 3000; i++) { sta_reg.word0 = readl(phba->sli4_hba.STAregaddr); @@ -4545,6 +4557,23 @@ lpfc_sli4_post_status_check(struct lpfc_hba *phba) bf_get(lpfc_scratchpad_featurelevel1, &scratchpad), bf_get(lpfc_scratchpad_featurelevel2, &scratchpad)); + /* With uncoverable error, log the error message and return error */ + onlnreg0 = readl(phba->sli4_hba.ONLINE0regaddr); + onlnreg1 = readl(phba->sli4_hba.ONLINE1regaddr); + if ((onlnreg0 != LPFC_ONLINE_NERR) || (onlnreg1 != LPFC_ONLINE_NERR)) { + uerrlo_reg.word0 = readl(phba->sli4_hba.UERRLOregaddr); + uerrhi_reg.word0 = readl(phba->sli4_hba.UERRHIregaddr); + if (uerrlo_reg.word0 || uerrhi_reg.word0) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "1422 HBA Unrecoverable error: " + "uerr_lo_reg=0x%x, uerr_hi_reg=0x%x, " + "online0_reg=0x%x, online1_reg=0x%x\n", + uerrlo_reg.word0, uerrhi_reg.word0, + onlnreg0, onlnreg1); + } + return -ENODEV; + } + return port_error; } @@ -7347,6 +7376,9 @@ lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid) /* Perform post initialization setup */ lpfc_post_init_setup(phba); + /* Check if there are static vports to be created. */ + lpfc_create_static_vport(phba); + return 0; out_disable_intr: @@ -7636,19 +7668,17 @@ static int __devinit lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid) { int rc; - uint16_t dev_id; + struct lpfc_sli_intf intf; - if (pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id)) + if (pci_read_config_dword(pdev, LPFC_SLIREV_CONF_WORD, &intf.word0)) return -ENODEV; - switch (dev_id) { - case PCI_DEVICE_ID_TIGERSHARK: + if ((bf_get(lpfc_sli_intf_valid, &intf) == LPFC_SLI_INTF_VALID) && + (bf_get(lpfc_sli_intf_rev, &intf) == LPFC_SLIREV_CONF_SLI4)) rc = lpfc_pci_probe_one_s4(pdev, pid); - break; - default: + else rc = lpfc_pci_probe_one_s3(pdev, pid); - break; - } + return rc; } diff --git a/drivers/scsi/lpfc/lpfc_mbox.c b/drivers/scsi/lpfc/lpfc_mbox.c index 3423571..1ab4059 100644 --- a/drivers/scsi/lpfc/lpfc_mbox.c +++ b/drivers/scsi/lpfc/lpfc_mbox.c @@ -52,48 +52,85 @@ * This routine prepares the mailbox command for dumping list of static * vports to be created. **/ -void +int lpfc_dump_static_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb, uint16_t offset) { MAILBOX_t *mb; - void *ctx; + struct lpfc_dmabuf *mp; mb = &pmb->u.mb; - ctx = pmb->context2; /* Setup to dump vport info region */ memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); mb->mbxCommand = MBX_DUMP_MEMORY; - mb->un.varDmp.cv = 1; mb->un.varDmp.type = DMP_NV_PARAMS; mb->un.varDmp.entry_index = offset; mb->un.varDmp.region_id = DMP_REGION_VPORT; - mb->un.varDmp.word_cnt = DMP_RSP_SIZE/sizeof(uint32_t); - mb->un.varDmp.co = 0; - mb->un.varDmp.resp_offset = 0; - pmb->context2 = ctx; mb->mbxOwner = OWN_HOST; - return; + /* For SLI3 HBAs data is embedded in mailbox */ + if (phba->sli_rev != LPFC_SLI_REV4) { + mb->un.varDmp.cv = 1; + mb->un.varDmp.word_cnt = DMP_RSP_SIZE/sizeof(uint32_t); + return 0; + } + + /* For SLI4 HBAs driver need to allocate memory */ + mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); + if (mp) + mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys); + + if (!mp || !mp->virt) { + kfree(mp); + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, + "2605 lpfc_dump_static_vport: memory" + " allocation failed\n"); + return 1; + } + memset(mp->virt, 0, LPFC_BPL_SIZE); + INIT_LIST_HEAD(&mp->list); + /* save address for completion */ + pmb->context2 = (uint8_t *) mp; + mb->un.varWords[3] = putPaddrLow(mp->phys); + mb->un.varWords[4] = putPaddrHigh(mp->phys); + mb->un.varDmp.sli4_length = sizeof(struct static_vport_info); + + return 0; +} + +/** + * lpfc_down_link - Bring down HBAs link. + * @phba: pointer to lpfc hba data structure. + * @pmb: pointer to the driver internal queue element for mailbox command. + * + * This routine prepares a mailbox command to bring down HBA link. + **/ +void +lpfc_down_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) +{ + MAILBOX_t *mb; + memset(pmb, 0, sizeof(LPFC_MBOXQ_t)); + mb = &pmb->u.mb; + mb->mbxCommand = MBX_DOWN_LINK; + mb->mbxOwner = OWN_HOST; } /** - * lpfc_dump_mem - Prepare a mailbox command for retrieving HBA's VPD memory + * lpfc_dump_mem - Prepare a mailbox command for reading a region. * @phba: pointer to lpfc hba data structure. * @pmb: pointer to the driver internal queue element for mailbox command. - * @offset: offset for dumping VPD memory mailbox command. + * @offset: offset into the region. + * @region_id: config region id. * * The dump mailbox command provides a method for the device driver to obtain * various types of information from the HBA device. * - * This routine prepares the mailbox command for dumping HBA Vital Product - * Data (VPD) memory. This mailbox command is to be used for retrieving a - * portion (DMP_RSP_SIZE bytes) of a HBA's VPD from the HBA at an address - * offset specified by the offset parameter. + * This routine prepares the mailbox command for dumping HBA's config region. **/ void -lpfc_dump_mem(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb, uint16_t offset) +lpfc_dump_mem(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb, uint16_t offset, + uint16_t region_id) { MAILBOX_t *mb; void *ctx; @@ -107,7 +144,7 @@ lpfc_dump_mem(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb, uint16_t offset) mb->un.varDmp.cv = 1; mb->un.varDmp.type = DMP_NV_PARAMS; mb->un.varDmp.entry_index = offset; - mb->un.varDmp.region_id = DMP_REGION_VPD; + mb->un.varDmp.region_id = region_id; mb->un.varDmp.word_cnt = (DMP_RSP_SIZE / sizeof (uint32_t)); mb->un.varDmp.co = 0; mb->un.varDmp.resp_offset = 0; @@ -1789,6 +1826,7 @@ lpfc_reg_vfi(struct lpfcMboxq *mbox, struct lpfc_vport *vport, dma_addr_t phys) /** * lpfc_init_vpi - Initialize the INIT_VPI mailbox command + * @phba: pointer to the hba structure to init the VPI for. * @mbox: pointer to lpfc mbox command to initialize. * @vpi: VPI to be initialized. * @@ -1799,11 +1837,14 @@ lpfc_reg_vfi(struct lpfcMboxq *mbox, struct lpfc_vport *vport, dma_addr_t phys) * successful virtual NPort login. **/ void -lpfc_init_vpi(struct lpfcMboxq *mbox, uint16_t vpi) +lpfc_init_vpi(struct lpfc_hba *phba, struct lpfcMboxq *mbox, uint16_t vpi) { memset(mbox, 0, sizeof(*mbox)); bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_INIT_VPI); - bf_set(lpfc_init_vpi_vpi, &mbox->u.mqe.un.init_vpi, vpi); + bf_set(lpfc_init_vpi_vpi, &mbox->u.mqe.un.init_vpi, + vpi + phba->vpi_base); + bf_set(lpfc_init_vpi_vfi, &mbox->u.mqe.un.init_vpi, + phba->pport->vfi + phba->vfi_base); } /** @@ -1852,7 +1893,7 @@ lpfc_dump_fcoe_param(struct lpfc_hba *phba, /* dump_fcoe_param failed to allocate memory */ lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX, "2569 lpfc_dump_fcoe_param: memory" - " allocation failed \n"); + " allocation failed\n"); return 1; } @@ -1864,8 +1905,8 @@ lpfc_dump_fcoe_param(struct lpfc_hba *phba, mb->mbxCommand = MBX_DUMP_MEMORY; mb->un.varDmp.type = DMP_NV_PARAMS; - mb->un.varDmp.region_id = DMP_REGION_FCOEPARAM; - mb->un.varDmp.sli4_length = DMP_FCOEPARAM_RGN_SIZE; + mb->un.varDmp.region_id = DMP_REGION_23; + mb->un.varDmp.sli4_length = DMP_RGN23_SIZE; mb->un.varWords[3] = putPaddrLow(mp->phys); mb->un.varWords[4] = putPaddrHigh(mp->phys); return 0; @@ -1938,9 +1979,7 @@ lpfc_resume_rpi(struct lpfcMboxq *mbox, struct lpfc_nodelist *ndlp) memset(mbox, 0, sizeof(*mbox)); resume_rpi = &mbox->u.mqe.un.resume_rpi; bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_RESUME_RPI); - bf_set(lpfc_resume_rpi_rpi, resume_rpi, ndlp->nlp_rpi); - bf_set(lpfc_resume_rpi_vpi, resume_rpi, - ndlp->vport->vpi + ndlp->vport->phba->vpi_base); - bf_set(lpfc_resume_rpi_vfi, resume_rpi, - ndlp->vport->vfi + ndlp->vport->phba->vfi_base); + bf_set(lpfc_resume_rpi_index, resume_rpi, ndlp->nlp_rpi); + bf_set(lpfc_resume_rpi_ii, resume_rpi, RESUME_INDEX_RPI); + resume_rpi->event_tag = ndlp->phba->fc_eventTag; } diff --git a/drivers/scsi/lpfc/lpfc_mem.c b/drivers/scsi/lpfc/lpfc_mem.c index e198c91..a1b6db6 100644 --- a/drivers/scsi/lpfc/lpfc_mem.c +++ b/drivers/scsi/lpfc/lpfc_mem.c @@ -110,17 +110,28 @@ lpfc_mem_alloc(struct lpfc_hba *phba, int align) sizeof(struct lpfc_nodelist)); if (!phba->nlp_mem_pool) goto fail_free_mbox_pool; - phba->lpfc_hrb_pool = pci_pool_create("lpfc_hrb_pool", + + if (phba->sli_rev == LPFC_SLI_REV4) { + phba->lpfc_hrb_pool = pci_pool_create("lpfc_hrb_pool", phba->pcidev, LPFC_HDR_BUF_SIZE, align, 0); - if (!phba->lpfc_hrb_pool) - goto fail_free_nlp_mem_pool; - phba->lpfc_drb_pool = pci_pool_create("lpfc_drb_pool", + if (!phba->lpfc_hrb_pool) + goto fail_free_nlp_mem_pool; + + phba->lpfc_drb_pool = pci_pool_create("lpfc_drb_pool", phba->pcidev, LPFC_DATA_BUF_SIZE, align, 0); - if (!phba->lpfc_drb_pool) - goto fail_free_hbq_pool; - + if (!phba->lpfc_drb_pool) + goto fail_free_hrb_pool; + phba->lpfc_hbq_pool = NULL; + } else { + phba->lpfc_hbq_pool = pci_pool_create("lpfc_hbq_pool", + phba->pcidev, LPFC_BPL_SIZE, align, 0); + if (!phba->lpfc_hbq_pool) + goto fail_free_nlp_mem_pool; + phba->lpfc_hrb_pool = NULL; + phba->lpfc_drb_pool = NULL; + } /* vpi zero is reserved for the physical port so add 1 to max */ longs = ((phba->max_vpi + 1) + BITS_PER_LONG - 1) / BITS_PER_LONG; phba->vpi_bmask = kzalloc(longs * sizeof(unsigned long), GFP_KERNEL); @@ -132,7 +143,7 @@ lpfc_mem_alloc(struct lpfc_hba *phba, int align) fail_free_dbq_pool: pci_pool_destroy(phba->lpfc_drb_pool); phba->lpfc_drb_pool = NULL; - fail_free_hbq_pool: + fail_free_hrb_pool: pci_pool_destroy(phba->lpfc_hrb_pool); phba->lpfc_hrb_pool = NULL; fail_free_nlp_mem_pool: @@ -176,11 +187,17 @@ lpfc_mem_free(struct lpfc_hba *phba) /* Free HBQ pools */ lpfc_sli_hbqbuf_free_all(phba); - pci_pool_destroy(phba->lpfc_drb_pool); + if (phba->lpfc_drb_pool) + pci_pool_destroy(phba->lpfc_drb_pool); phba->lpfc_drb_pool = NULL; - pci_pool_destroy(phba->lpfc_hrb_pool); + if (phba->lpfc_hrb_pool) + pci_pool_destroy(phba->lpfc_hrb_pool); phba->lpfc_hrb_pool = NULL; + if (phba->lpfc_hbq_pool) + pci_pool_destroy(phba->lpfc_hbq_pool); + phba->lpfc_hbq_pool = NULL; + /* Free NLP memory pool */ mempool_destroy(phba->nlp_mem_pool); phba->nlp_mem_pool = NULL; @@ -380,7 +397,7 @@ lpfc_els_hbq_alloc(struct lpfc_hba *phba) if (!hbqbp) return NULL; - hbqbp->dbuf.virt = pci_pool_alloc(phba->lpfc_hrb_pool, GFP_KERNEL, + hbqbp->dbuf.virt = pci_pool_alloc(phba->lpfc_hbq_pool, GFP_KERNEL, &hbqbp->dbuf.phys); if (!hbqbp->dbuf.virt) { kfree(hbqbp); @@ -405,7 +422,7 @@ lpfc_els_hbq_alloc(struct lpfc_hba *phba) void lpfc_els_hbq_free(struct lpfc_hba *phba, struct hbq_dmabuf *hbqbp) { - pci_pool_free(phba->lpfc_hrb_pool, hbqbp->dbuf.virt, hbqbp->dbuf.phys); + pci_pool_free(phba->lpfc_hbq_pool, hbqbp->dbuf.virt, hbqbp->dbuf.phys); kfree(hbqbp); return; } diff --git a/drivers/scsi/lpfc/lpfc_nl.h b/drivers/scsi/lpfc/lpfc_nl.h index 27d1a88..d655ed3 100644 --- a/drivers/scsi/lpfc/lpfc_nl.h +++ b/drivers/scsi/lpfc/lpfc_nl.h @@ -177,3 +177,23 @@ struct temp_event { uint32_t data; }; +/* bsg definitions */ +#define LPFC_BSG_VENDOR_SET_CT_EVENT 1 +#define LPFC_BSG_VENDOR_GET_CT_EVENT 2 + +struct set_ct_event { + uint32_t command; + uint32_t ev_req_id; + uint32_t ev_reg_id; +}; + +struct get_ct_event { + uint32_t command; + uint32_t ev_reg_id; + uint32_t ev_req_id; +}; + +struct get_ct_event_reply { + uint32_t immed_data; + uint32_t type; +}; diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index da59c4f..61d0897 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -2142,7 +2142,7 @@ lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, } else if (resp_info & RESID_OVER) { lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, "9028 FCP command x%x residual overrun error. " - "Data: x%x x%x \n", cmnd->cmnd[0], + "Data: x%x x%x\n", cmnd->cmnd[0], scsi_bufflen(cmnd), scsi_get_resid(cmnd)); host_status = DID_ERROR; @@ -2843,7 +2843,7 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) dif_op_str[scsi_get_prot_op(cmnd)]); lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, "9034 BLKGRD: CDB: %02x %02x %02x %02x %02x " - "%02x %02x %02x %02x %02x \n", + "%02x %02x %02x %02x %02x\n", cmnd->cmnd[0], cmnd->cmnd[1], cmnd->cmnd[2], cmnd->cmnd[3], cmnd->cmnd[4], cmnd->cmnd[5], cmnd->cmnd[6], cmnd->cmnd[7], cmnd->cmnd[8], @@ -2871,7 +2871,7 @@ lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) dif_op_str[scsi_get_prot_op(cmnd)]); lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, "9039 BLKGRD: CDB: %02x %02x %02x %02x %02x " - "%02x %02x %02x %02x %02x \n", + "%02x %02x %02x %02x %02x\n", cmnd->cmnd[0], cmnd->cmnd[1], cmnd->cmnd[2], cmnd->cmnd[3], cmnd->cmnd[4], cmnd->cmnd[5], cmnd->cmnd[6], cmnd->cmnd[7], cmnd->cmnd[8], @@ -3584,6 +3584,7 @@ struct scsi_host_template lpfc_template = { .use_clustering = ENABLE_CLUSTERING, .shost_attrs = lpfc_hba_attrs, .max_sectors = 0xFFFF, + .vendor_id = LPFC_NL_VENDOR_ID, }; struct scsi_host_template lpfc_vport_template = { diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index acc43b0..43cbe33 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -4139,7 +4139,7 @@ lpfc_sli4_read_fcoe_params(struct lpfc_hba *phba, return -EIO; } data_length = mqe->un.mb_words[5]; - if (data_length > DMP_FCOEPARAM_RGN_SIZE) { + if (data_length > DMP_RGN23_SIZE) { lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); return -EIO; @@ -4304,7 +4304,7 @@ lpfc_sli4_hba_setup(struct lpfc_hba *phba) */ if (lpfc_sli4_read_fcoe_params(phba, mboxq)) lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_INIT, - "2570 Failed to read FCoE parameters \n"); + "2570 Failed to read FCoE parameters\n"); /* Issue READ_REV to collect vpd and FW information. */ vpd_size = PAGE_SIZE; @@ -4522,12 +4522,8 @@ lpfc_sli4_hba_setup(struct lpfc_hba *phba) lpfc_sli4_rb_setup(phba); /* Start the ELS watchdog timer */ - /* - * The driver for SLI4 is not yet ready to process timeouts - * or interrupts. Once it is, the comment bars can be removed. - */ - /* mod_timer(&vport->els_tmofunc, - * jiffies + HZ * (phba->fc_ratov*2)); */ + mod_timer(&vport->els_tmofunc, + jiffies + HZ * (phba->fc_ratov * 2)); /* Start heart beat timer */ mod_timer(&phba->hb_tmofunc, @@ -4706,13 +4702,13 @@ lpfc_sli_issue_mbox_s3(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, spin_lock_irqsave(&phba->hbalock, drvr_flag); if (!pmbox) { + phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; /* processing mbox queue from intr_handler */ if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) { spin_unlock_irqrestore(&phba->hbalock, drvr_flag); return MBX_SUCCESS; } processing_queue = 1; - phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; pmbox = lpfc_mbox_get(phba); if (!pmbox) { spin_unlock_irqrestore(&phba->hbalock, drvr_flag); @@ -5279,6 +5275,18 @@ lpfc_sli_issue_mbox_s4(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, unsigned long iflags; int rc; + rc = lpfc_mbox_dev_check(phba); + if (unlikely(rc)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "(%d):2544 Mailbox command x%x (x%x) " + "cannot issue Data: x%x x%x\n", + mboxq->vport ? mboxq->vport->vpi : 0, + mboxq->u.mb.mbxCommand, + lpfc_sli4_mbox_opcode_get(phba, mboxq), + psli->sli_flag, flag); + goto out_not_finished; + } + /* Detect polling mode and jump to a handler */ if (!phba->sli4_hba.intr_enable) { if (flag == MBX_POLL) @@ -5338,17 +5346,6 @@ lpfc_sli_issue_mbox_s4(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, psli->sli_flag, flag); goto out_not_finished; } - rc = lpfc_mbox_dev_check(phba); - if (unlikely(rc)) { - lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, - "(%d):2544 Mailbox command x%x (x%x) " - "cannot issue Data: x%x x%x\n", - mboxq->vport ? mboxq->vport->vpi : 0, - mboxq->u.mb.mbxCommand, - lpfc_sli4_mbox_opcode_get(phba, mboxq), - psli->sli_flag, flag); - goto out_not_finished; - } /* Put the mailbox command to the driver internal FIFO */ psli->slistat.mbox_busy++; @@ -5817,19 +5814,21 @@ lpfc_sli4_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq, /** * lpfc_sli4_scmd_to_wqidx_distr - scsi command to SLI4 WQ index distribution * @phba: Pointer to HBA context object. - * @piocb: Pointer to command iocb. * * This routine performs a round robin SCSI command to SLI4 FCP WQ index - * distribution. + * distribution. This is called by __lpfc_sli_issue_iocb_s4() with the hbalock + * held. * * Return: index into SLI4 fast-path FCP queue index. **/ static uint32_t -lpfc_sli4_scmd_to_wqidx_distr(struct lpfc_hba *phba, struct lpfc_iocbq *piocb) +lpfc_sli4_scmd_to_wqidx_distr(struct lpfc_hba *phba) { - static uint32_t fcp_qidx; + ++phba->fcp_qidx; + if (phba->fcp_qidx >= phba->cfg_fcp_wq_count) + phba->fcp_qidx = 0; - return fcp_qidx++ % phba->cfg_fcp_wq_count; + return phba->fcp_qidx; } /** @@ -6156,7 +6155,7 @@ __lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number, return IOCB_ERROR; if (piocb->iocb_flag & LPFC_IO_FCP) { - fcp_wqidx = lpfc_sli4_scmd_to_wqidx_distr(phba, piocb); + fcp_wqidx = lpfc_sli4_scmd_to_wqidx_distr(phba); if (lpfc_sli4_wq_put(phba->sli4_hba.fcp_wq[fcp_wqidx], &wqe)) return IOCB_ERROR; } else { @@ -6327,7 +6326,7 @@ lpfc_sli_async_event_handler(struct lpfc_hba * phba, KERN_ERR, LOG_SLI, "0346 Ring %d handler: unexpected ASYNC_STATUS" - " evt_code 0x%x \n" + " evt_code 0x%x\n" "W0 0x%08x W1 0x%08x W2 0x%08x W3 0x%08x\n" "W4 0x%08x W5 0x%08x W6 0x%08x W7 0x%08x\n" "W8 0x%08x W9 0x%08x W10 0x%08x W11 0x%08x\n" @@ -6790,6 +6789,33 @@ lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt) /** + * lpfc_sli_bemem_bcopy - SLI memory copy function + * @srcp: Source memory pointer. + * @destp: Destination memory pointer. + * @cnt: Number of words required to be copied. + * + * This function is used for copying data between a data structure + * with big endian representation to local endianness. + * This function can be called with or without lock. + **/ +void +lpfc_sli_bemem_bcopy(void *srcp, void *destp, uint32_t cnt) +{ + uint32_t *src = srcp; + uint32_t *dest = destp; + uint32_t ldata; + int i; + + for (i = 0; i < (int)cnt; i += sizeof(uint32_t)) { + ldata = *src; + ldata = be32_to_cpu(ldata); + *dest = ldata; + src++; + dest++; + } +} + +/** * lpfc_sli_ringpostbuf_put - Function to add a buffer to postbufq * @phba: Pointer to HBA context object. * @pring: Pointer to driver SLI ring object. @@ -7678,12 +7704,6 @@ lpfc_sli4_eratt_read(struct lpfc_hba *phba) "online0_reg=0x%x, online1_reg=0x%x\n", uerr_sta_lo, uerr_sta_hi, onlnreg0, onlnreg1); - /* TEMP: as the driver error recover logic is not - * fully developed, we just log the error message - * and the device error attention action is now - * temporarily disabled. - */ - return 0; phba->work_status[0] = uerr_sta_lo; phba->work_status[1] = uerr_sta_hi; /* Set the driver HA work bitmap */ @@ -9499,8 +9519,7 @@ lpfc_eq_create(struct lpfc_hba *phba, struct lpfc_queue *eq, uint16_t imax) eq->host_index = 0; eq->hba_index = 0; - if (rc != MBX_TIMEOUT) - mempool_free(mbox, phba->mbox_mem_pool); + mempool_free(mbox, phba->mbox_mem_pool); return status; } @@ -9604,10 +9623,9 @@ lpfc_cq_create(struct lpfc_hba *phba, struct lpfc_queue *cq, cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response); cq->host_index = 0; cq->hba_index = 0; -out: - if (rc != MBX_TIMEOUT) - mempool_free(mbox, phba->mbox_mem_pool); +out: + mempool_free(mbox, phba->mbox_mem_pool); return status; } @@ -9712,8 +9730,7 @@ lpfc_mq_create(struct lpfc_hba *phba, struct lpfc_queue *mq, /* link the mq onto the parent cq child list */ list_add_tail(&mq->list, &cq->child_list); out: - if (rc != MBX_TIMEOUT) - mempool_free(mbox, phba->mbox_mem_pool); + mempool_free(mbox, phba->mbox_mem_pool); return status; } @@ -9795,8 +9812,7 @@ lpfc_wq_create(struct lpfc_hba *phba, struct lpfc_queue *wq, /* link the wq onto the parent cq child list */ list_add_tail(&wq->list, &cq->child_list); out: - if (rc != MBX_TIMEOUT) - mempool_free(mbox, phba->mbox_mem_pool); + mempool_free(mbox, phba->mbox_mem_pool); return status; } @@ -9970,8 +9986,7 @@ lpfc_rq_create(struct lpfc_hba *phba, struct lpfc_queue *hrq, list_add_tail(&drq->list, &cq->child_list); out: - if (rc != MBX_TIMEOUT) - mempool_free(mbox, phba->mbox_mem_pool); + mempool_free(mbox, phba->mbox_mem_pool); return status; } @@ -10026,8 +10041,7 @@ lpfc_eq_destroy(struct lpfc_hba *phba, struct lpfc_queue *eq) /* Remove eq from any list */ list_del_init(&eq->list); - if (rc != MBX_TIMEOUT) - mempool_free(mbox, eq->phba->mbox_mem_pool); + mempool_free(mbox, eq->phba->mbox_mem_pool); return status; } @@ -10080,8 +10094,7 @@ lpfc_cq_destroy(struct lpfc_hba *phba, struct lpfc_queue *cq) } /* Remove cq from any list */ list_del_init(&cq->list); - if (rc != MBX_TIMEOUT) - mempool_free(mbox, cq->phba->mbox_mem_pool); + mempool_free(mbox, cq->phba->mbox_mem_pool); return status; } @@ -10134,8 +10147,7 @@ lpfc_mq_destroy(struct lpfc_hba *phba, struct lpfc_queue *mq) } /* Remove mq from any list */ list_del_init(&mq->list); - if (rc != MBX_TIMEOUT) - mempool_free(mbox, mq->phba->mbox_mem_pool); + mempool_free(mbox, mq->phba->mbox_mem_pool); return status; } @@ -10187,8 +10199,7 @@ lpfc_wq_destroy(struct lpfc_hba *phba, struct lpfc_queue *wq) } /* Remove wq from any list */ list_del_init(&wq->list); - if (rc != MBX_TIMEOUT) - mempool_free(mbox, wq->phba->mbox_mem_pool); + mempool_free(mbox, wq->phba->mbox_mem_pool); return status; } @@ -10258,8 +10269,7 @@ lpfc_rq_destroy(struct lpfc_hba *phba, struct lpfc_queue *hrq, } list_del_init(&hrq->list); list_del_init(&drq->list); - if (rc != MBX_TIMEOUT) - mempool_free(mbox, hrq->phba->mbox_mem_pool); + mempool_free(mbox, hrq->phba->mbox_mem_pool); return status; } @@ -10933,6 +10943,7 @@ lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf) first_iocbq = lpfc_sli_get_iocbq(vport->phba); if (first_iocbq) { /* Initialize the first IOCB. */ + first_iocbq->iocb.unsli3.rcvsli3.acc_len = 0; first_iocbq->iocb.ulpStatus = IOSTAT_SUCCESS; first_iocbq->iocb.ulpCommand = CMD_IOCB_RCV_SEQ64_CX; first_iocbq->iocb.ulpContext = be16_to_cpu(fc_hdr->fh_ox_id); @@ -10945,6 +10956,8 @@ lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf) first_iocbq->iocb.un.cont64[0].tus.f.bdeSize = LPFC_DATA_BUF_SIZE; first_iocbq->iocb.un.rcvels.remoteID = sid; + first_iocbq->iocb.unsli3.rcvsli3.acc_len += + bf_get(lpfc_rcqe_length, &seq_dmabuf->rcqe); } iocbq = first_iocbq; /* @@ -10961,6 +10974,8 @@ lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf) iocbq->iocb.ulpBdeCount++; iocbq->iocb.unsli3.rcvsli3.bde2.tus.f.bdeSize = LPFC_DATA_BUF_SIZE; + first_iocbq->iocb.unsli3.rcvsli3.acc_len += + bf_get(lpfc_rcqe_length, &seq_dmabuf->rcqe); } else { iocbq = lpfc_sli_get_iocbq(vport->phba); if (!iocbq) { @@ -10978,6 +10993,8 @@ lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf) iocbq->iocb.ulpBdeCount = 1; iocbq->iocb.un.cont64[0].tus.f.bdeSize = LPFC_DATA_BUF_SIZE; + first_iocbq->iocb.unsli3.rcvsli3.acc_len += + bf_get(lpfc_rcqe_length, &seq_dmabuf->rcqe); iocbq->iocb.un.rcvels.remoteID = sid; list_add_tail(&iocbq->list, &first_iocbq->list); } @@ -11324,7 +11341,7 @@ lpfc_sli4_init_vpi(struct lpfc_hba *phba, uint16_t vpi) mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) return -ENOMEM; - lpfc_init_vpi(mboxq, vpi); + lpfc_init_vpi(phba, mboxq, vpi); mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_INIT_VPI); rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo); if (rc != MBX_TIMEOUT) @@ -11519,6 +11536,7 @@ lpfc_sli4_read_fcf_record(struct lpfc_hba *phba, uint16_t fcf_index) uint32_t alloc_len, req_len; struct lpfc_mbx_read_fcf_tbl *read_fcf; + phba->fcoe_eventtag_at_fcf_scan = phba->fcoe_eventtag; mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mboxq) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, @@ -11570,7 +11588,140 @@ lpfc_sli4_read_fcf_record(struct lpfc_hba *phba, uint16_t fcf_index) if (rc == MBX_NOT_FINISHED) { lpfc_sli4_mbox_cmd_free(phba, mboxq); error = -EIO; - } else + } else { + spin_lock_irq(&phba->hbalock); + phba->hba_flag |= FCF_DISC_INPROGRESS; + spin_unlock_irq(&phba->hbalock); error = 0; + } return error; } + +/** + * lpfc_sli_read_link_ste - Read region 23 to decide if link is disabled. + * @phba: pointer to lpfc hba data structure. + * + * This function read region 23 and parse TLV for port status to + * decide if the user disaled the port. If the TLV indicates the + * port is disabled, the hba_flag is set accordingly. + **/ +void +lpfc_sli_read_link_ste(struct lpfc_hba *phba) +{ + LPFC_MBOXQ_t *pmb = NULL; + MAILBOX_t *mb; + uint8_t *rgn23_data = NULL; + uint32_t offset = 0, data_size, sub_tlv_len, tlv_offset; + int rc; + + pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!pmb) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2600 lpfc_sli_read_serdes_param failed to" + " allocate mailbox memory\n"); + goto out; + } + mb = &pmb->u.mb; + + /* Get adapter Region 23 data */ + rgn23_data = kzalloc(DMP_RGN23_SIZE, GFP_KERNEL); + if (!rgn23_data) + goto out; + + do { + lpfc_dump_mem(phba, pmb, offset, DMP_REGION_23); + rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); + + if (rc != MBX_SUCCESS) { + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, + "2601 lpfc_sli_read_link_ste failed to" + " read config region 23 rc 0x%x Status 0x%x\n", + rc, mb->mbxStatus); + mb->un.varDmp.word_cnt = 0; + } + /* + * dump mem may return a zero when finished or we got a + * mailbox error, either way we are done. + */ + if (mb->un.varDmp.word_cnt == 0) + break; + if (mb->un.varDmp.word_cnt > DMP_RGN23_SIZE - offset) + mb->un.varDmp.word_cnt = DMP_RGN23_SIZE - offset; + + lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, + rgn23_data + offset, + mb->un.varDmp.word_cnt); + offset += mb->un.varDmp.word_cnt; + } while (mb->un.varDmp.word_cnt && offset < DMP_RGN23_SIZE); + + data_size = offset; + offset = 0; + + if (!data_size) + goto out; + + /* Check the region signature first */ + if (memcmp(&rgn23_data[offset], LPFC_REGION23_SIGNATURE, 4)) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2619 Config region 23 has bad signature\n"); + goto out; + } + offset += 4; + + /* Check the data structure version */ + if (rgn23_data[offset] != LPFC_REGION23_VERSION) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2620 Config region 23 has bad version\n"); + goto out; + } + offset += 4; + + /* Parse TLV entries in the region */ + while (offset < data_size) { + if (rgn23_data[offset] == LPFC_REGION23_LAST_REC) + break; + /* + * If the TLV is not driver specific TLV or driver id is + * not linux driver id, skip the record. + */ + if ((rgn23_data[offset] != DRIVER_SPECIFIC_TYPE) || + (rgn23_data[offset + 2] != LINUX_DRIVER_ID) || + (rgn23_data[offset + 3] != 0)) { + offset += rgn23_data[offset + 1] * 4 + 4; + continue; + } + + /* Driver found a driver specific TLV in the config region */ + sub_tlv_len = rgn23_data[offset + 1] * 4; + offset += 4; + tlv_offset = 0; + + /* + * Search for configured port state sub-TLV. + */ + while ((offset < data_size) && + (tlv_offset < sub_tlv_len)) { + if (rgn23_data[offset] == LPFC_REGION23_LAST_REC) { + offset += 4; + tlv_offset += 4; + break; + } + if (rgn23_data[offset] != PORT_STE_TYPE) { + offset += rgn23_data[offset + 1] * 4 + 4; + tlv_offset += rgn23_data[offset + 1] * 4 + 4; + continue; + } + + /* This HBA contains PORT_STE configured */ + if (!rgn23_data[offset + 2]) + phba->hba_flag |= LINK_DISABLED; + + goto out; + } + } +out: + if (pmb) + mempool_free(pmb, phba->mbox_mem_pool); + kfree(rgn23_data); + return; +} diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h index 3b276b4..b5f4ba1 100644 --- a/drivers/scsi/lpfc/lpfc_sli4.h +++ b/drivers/scsi/lpfc/lpfc_sli4.h @@ -132,6 +132,7 @@ struct lpfc_sli4_link { struct lpfc_fcf { uint8_t fabric_name[8]; + uint8_t switch_name[8]; uint8_t mac_addr[6]; uint16_t fcf_indx; uint16_t fcfi; @@ -150,6 +151,10 @@ struct lpfc_fcf { #define LPFC_REGION23_SIGNATURE "RG23" #define LPFC_REGION23_VERSION 1 #define LPFC_REGION23_LAST_REC 0xff +#define DRIVER_SPECIFIC_TYPE 0xA2 +#define LINUX_DRIVER_ID 0x20 +#define PORT_STE_TYPE 0x1 + struct lpfc_fip_param_hdr { uint8_t type; #define FCOE_PARAM_TYPE 0xA0 diff --git a/drivers/scsi/lpfc/lpfc_version.h b/drivers/scsi/lpfc/lpfc_version.h index 41094e0..9ae20af 100644 --- a/drivers/scsi/lpfc/lpfc_version.h +++ b/drivers/scsi/lpfc/lpfc_version.h @@ -18,7 +18,7 @@ * included with this package. * *******************************************************************/ -#define LPFC_DRIVER_VERSION "8.3.3" +#define LPFC_DRIVER_VERSION "8.3.4" #define LPFC_DRIVER_NAME "lpfc" #define LPFC_SP_DRIVER_HANDLER_NAME "lpfc:sp" diff --git a/drivers/scsi/lpfc/lpfc_vport.c b/drivers/scsi/lpfc/lpfc_vport.c index e0b4992..606efa7 100644 --- a/drivers/scsi/lpfc/lpfc_vport.c +++ b/drivers/scsi/lpfc/lpfc_vport.c @@ -313,22 +313,6 @@ lpfc_vport_create(struct fc_vport *fc_vport, bool disable) goto error_out; } - /* - * In SLI4, the vpi must be activated before it can be used - * by the port. - */ - if (phba->sli_rev == LPFC_SLI_REV4) { - rc = lpfc_sli4_init_vpi(phba, vpi); - if (rc) { - lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, - "1838 Failed to INIT_VPI on vpi %d " - "status %d\n", vpi, rc); - rc = VPORT_NORESOURCES; - lpfc_free_vpi(phba, vpi); - goto error_out; - } - } - /* Assign an unused board number */ if ((instance = lpfc_get_instance()) < 0) { lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, @@ -367,12 +351,8 @@ lpfc_vport_create(struct fc_vport *fc_vport, bool disable) goto error_out; } - memcpy(vport->fc_portname.u.wwn, vport->fc_sparam.portName.u.wwn, 8); - memcpy(vport->fc_nodename.u.wwn, vport->fc_sparam.nodeName.u.wwn, 8); - if (fc_vport->node_name != 0) - u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn); - if (fc_vport->port_name != 0) - u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn); + u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn); + u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn); memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8); memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8); @@ -404,7 +384,34 @@ lpfc_vport_create(struct fc_vport *fc_vport, bool disable) *(struct lpfc_vport **)fc_vport->dd_data = vport; vport->fc_vport = fc_vport; + /* + * In SLI4, the vpi must be activated before it can be used + * by the port. + */ + if ((phba->sli_rev == LPFC_SLI_REV4) && + (pport->vfi_state & LPFC_VFI_REGISTERED)) { + rc = lpfc_sli4_init_vpi(phba, vpi); + if (rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, + "1838 Failed to INIT_VPI on vpi %d " + "status %d\n", vpi, rc); + rc = VPORT_NORESOURCES; + lpfc_free_vpi(phba, vpi); + goto error_out; + } + } else if (phba->sli_rev == LPFC_SLI_REV4) { + /* + * Driver cannot INIT_VPI now. Set the flags to + * init_vpi when reg_vfi complete. + */ + vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; + lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); + rc = VPORT_OK; + goto out; + } + if ((phba->link_state < LPFC_LINK_UP) || + (pport->port_state < LPFC_FABRIC_CFG_LINK) || (phba->fc_topology == TOPOLOGY_LOOP)) { lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); rc = VPORT_OK; @@ -661,7 +668,7 @@ lpfc_vport_delete(struct fc_vport *fc_vport) lpfc_printf_log(vport->phba, KERN_WARNING, LOG_VPORT, "1829 CT command failed to " - "delete objects on fabric. \n"); + "delete objects on fabric\n"); } /* First look for the Fabric ndlp */ ndlp = lpfc_findnode_did(vport, Fabric_DID); diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c index 35a1386..d95d2f2 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_base.c +++ b/drivers/scsi/mpt2sas/mpt2sas_base.c @@ -94,7 +94,7 @@ _base_fault_reset_work(struct work_struct *work) int rc; spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); - if (ioc->ioc_reset_in_progress) + if (ioc->shost_recovery) goto rearm_timer; spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); @@ -687,6 +687,14 @@ _base_unmask_interrupts(struct MPT2SAS_ADAPTER *ioc) ioc->mask_interrupts = 0; } +union reply_descriptor { + u64 word; + struct { + u32 low; + u32 high; + } u; +}; + /** * _base_interrupt - MPT adapter (IOC) specific interrupt handler. * @irq: irq number (not used) @@ -698,47 +706,38 @@ _base_unmask_interrupts(struct MPT2SAS_ADAPTER *ioc) static irqreturn_t _base_interrupt(int irq, void *bus_id) { - union reply_descriptor { - u64 word; - struct { - u32 low; - u32 high; - } u; - }; union reply_descriptor rd; - u32 post_index, post_index_next, completed_cmds; + u32 completed_cmds; u8 request_desript_type; u16 smid; u8 cb_idx; u32 reply; u8 VF_ID; - int i; struct MPT2SAS_ADAPTER *ioc = bus_id; + Mpi2ReplyDescriptorsUnion_t *rpf; if (ioc->mask_interrupts) return IRQ_NONE; - post_index = ioc->reply_post_host_index; - request_desript_type = ioc->reply_post_free[post_index]. - Default.ReplyFlags & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; + rpf = &ioc->reply_post_free[ioc->reply_post_host_index]; + request_desript_type = rpf->Default.ReplyFlags + & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) return IRQ_NONE; completed_cmds = 0; do { - rd.word = ioc->reply_post_free[post_index].Words; + rd.word = rpf->Words; if (rd.u.low == UINT_MAX || rd.u.high == UINT_MAX) goto out; reply = 0; cb_idx = 0xFF; - smid = le16_to_cpu(ioc->reply_post_free[post_index]. - Default.DescriptorTypeDependent1); - VF_ID = ioc->reply_post_free[post_index]. - Default.VF_ID; + smid = le16_to_cpu(rpf->Default.DescriptorTypeDependent1); + VF_ID = rpf->Default.VF_ID; if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_ADDRESS_REPLY) { - reply = le32_to_cpu(ioc->reply_post_free[post_index]. - AddressReply.ReplyFrameAddress); + reply = le32_to_cpu + (rpf->AddressReply.ReplyFrameAddress); } else if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_TARGET_COMMAND_BUFFER) goto next; @@ -765,21 +764,27 @@ _base_interrupt(int irq, void *bus_id) 0 : ioc->reply_free_host_index + 1; ioc->reply_free[ioc->reply_free_host_index] = cpu_to_le32(reply); + wmb(); writel(ioc->reply_free_host_index, &ioc->chip->ReplyFreeHostIndex); - wmb(); } next: - post_index_next = (post_index == (ioc->reply_post_queue_depth - - 1)) ? 0 : post_index + 1; + + rpf->Words = ULLONG_MAX; + ioc->reply_post_host_index = (ioc->reply_post_host_index == + (ioc->reply_post_queue_depth - 1)) ? 0 : + ioc->reply_post_host_index + 1; request_desript_type = - ioc->reply_post_free[post_index_next].Default.ReplyFlags - & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; + ioc->reply_post_free[ioc->reply_post_host_index].Default. + ReplyFlags & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; completed_cmds++; if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) goto out; - post_index = post_index_next; + if (!ioc->reply_post_host_index) + rpf = ioc->reply_post_free; + else + rpf++; } while (1); out: @@ -787,19 +792,8 @@ _base_interrupt(int irq, void *bus_id) if (!completed_cmds) return IRQ_NONE; - /* reply post descriptor handling */ - post_index_next = ioc->reply_post_host_index; - for (i = 0 ; i < completed_cmds; i++) { - post_index = post_index_next; - /* poison the reply post descriptor */ - ioc->reply_post_free[post_index_next].Words = ULLONG_MAX; - post_index_next = (post_index == - (ioc->reply_post_queue_depth - 1)) - ? 0 : post_index + 1; - } - ioc->reply_post_host_index = post_index_next; - writel(post_index_next, &ioc->chip->ReplyPostHostIndex); wmb(); + writel(ioc->reply_post_host_index, &ioc->chip->ReplyPostHostIndex); return IRQ_HANDLED; } @@ -1542,6 +1536,8 @@ _base_display_ioc_capabilities(struct MPT2SAS_ADAPTER *ioc) (ioc->bios_pg3.BiosVersion & 0x0000FF00) >> 8, ioc->bios_pg3.BiosVersion & 0x000000FF); + _base_display_dell_branding(ioc); + printk(MPT2SAS_INFO_FMT "Protocol=(", ioc->name); if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR) { @@ -1554,8 +1550,6 @@ _base_display_ioc_capabilities(struct MPT2SAS_ADAPTER *ioc) i++; } - _base_display_dell_branding(ioc); - i = 0; printk("), "); printk("Capabilities=("); @@ -1627,6 +1621,9 @@ _base_static_config_pages(struct MPT2SAS_ADAPTER *ioc) u32 iounit_pg1_flags; mpt2sas_config_get_manufacturing_pg0(ioc, &mpi_reply, &ioc->manu_pg0); + if (ioc->ir_firmware) + mpt2sas_config_get_manufacturing_pg10(ioc, &mpi_reply, + &ioc->manu_pg10); mpt2sas_config_get_bios_pg2(ioc, &mpi_reply, &ioc->bios_pg2); mpt2sas_config_get_bios_pg3(ioc, &mpi_reply, &ioc->bios_pg3); mpt2sas_config_get_ioc_pg8(ioc, &mpi_reply, &ioc->ioc_pg8); @@ -1647,7 +1644,7 @@ _base_static_config_pages(struct MPT2SAS_ADAPTER *ioc) iounit_pg1_flags |= MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING; ioc->iounit_pg1.Flags = cpu_to_le32(iounit_pg1_flags); - mpt2sas_config_set_iounit_pg1(ioc, &mpi_reply, ioc->iounit_pg1); + mpt2sas_config_set_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1); } /** @@ -3303,13 +3300,11 @@ mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc) ioc->tm_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL); ioc->tm_cmds.status = MPT2_CMD_NOT_USED; mutex_init(&ioc->tm_cmds.mutex); - init_completion(&ioc->tm_cmds.done); /* config page internal command bits */ ioc->config_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL); ioc->config_cmds.status = MPT2_CMD_NOT_USED; mutex_init(&ioc->config_cmds.mutex); - init_completion(&ioc->config_cmds.done); /* ctl module internal command bits */ ioc->ctl_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL); @@ -3433,6 +3428,7 @@ _base_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase) if (ioc->config_cmds.status & MPT2_CMD_PENDING) { ioc->config_cmds.status |= MPT2_CMD_RESET; mpt2sas_base_free_smid(ioc, ioc->config_cmds.smid); + ioc->config_cmds.smid = USHORT_MAX; complete(&ioc->config_cmds.done); } break; @@ -3501,20 +3497,13 @@ mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag, __func__)); spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); - if (ioc->ioc_reset_in_progress) { + if (ioc->shost_recovery) { spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); printk(MPT2SAS_ERR_FMT "%s: busy\n", ioc->name, __func__); return -EBUSY; } - ioc->ioc_reset_in_progress = 1; ioc->shost_recovery = 1; - if (ioc->shost->shost_state == SHOST_RUNNING) { - /* set back to SHOST_RUNNING in mpt2sas_scsih.c */ - scsi_host_set_state(ioc->shost, SHOST_RECOVERY); - printk(MPT2SAS_INFO_FMT "putting controller into " - "SHOST_RECOVERY\n", ioc->name); - } spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); _base_reset_handler(ioc, MPT2_IOC_PRE_RESET); @@ -3534,7 +3523,10 @@ mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag, ioc->name, __func__, ((r == 0) ? "SUCCESS" : "FAILED"))); spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); - ioc->ioc_reset_in_progress = 0; + ioc->shost_recovery = 0; spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); + + if (!r) + _base_reset_handler(ioc, MPT2_IOC_RUNNING); return r; } diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.h b/drivers/scsi/mpt2sas/mpt2sas_base.h index acdcff1..2faab1e 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_base.h +++ b/drivers/scsi/mpt2sas/mpt2sas_base.h @@ -69,10 +69,10 @@ #define MPT2SAS_DRIVER_NAME "mpt2sas" #define MPT2SAS_AUTHOR "LSI Corporation <DL-MPTFusionLinux@lsi.com>" #define MPT2SAS_DESCRIPTION "LSI MPT Fusion SAS 2.0 Device Driver" -#define MPT2SAS_DRIVER_VERSION "01.100.04.00" +#define MPT2SAS_DRIVER_VERSION "01.100.06.00" #define MPT2SAS_MAJOR_VERSION 01 #define MPT2SAS_MINOR_VERSION 100 -#define MPT2SAS_BUILD_VERSION 04 +#define MPT2SAS_BUILD_VERSION 06 #define MPT2SAS_RELEASE_VERSION 00 /* @@ -119,6 +119,7 @@ #define MPT2_IOC_PRE_RESET 1 /* prior to host reset */ #define MPT2_IOC_AFTER_RESET 2 /* just after host reset */ #define MPT2_IOC_DONE_RESET 3 /* links re-initialized */ +#define MPT2_IOC_RUNNING 4 /* shost running */ /* * logging format @@ -196,6 +197,38 @@ struct MPT2SAS_TARGET { * @block: device is in SDEV_BLOCK state * @tlr_snoop_check: flag used in determining whether to disable TLR */ + +/* OEM Identifiers */ +#define MFG10_OEM_ID_INVALID (0x00000000) +#define MFG10_OEM_ID_DELL (0x00000001) +#define MFG10_OEM_ID_FSC (0x00000002) +#define MFG10_OEM_ID_SUN (0x00000003) +#define MFG10_OEM_ID_IBM (0x00000004) + +/* GENERIC Flags 0*/ +#define MFG10_GF0_OCE_DISABLED (0x00000001) +#define MFG10_GF0_R1E_DRIVE_COUNT (0x00000002) +#define MFG10_GF0_R10_DISPLAY (0x00000004) +#define MFG10_GF0_SSD_DATA_SCRUB_DISABLE (0x00000008) +#define MFG10_GF0_SINGLE_DRIVE_R0 (0x00000010) + +/* OEM Specific Flags will come from OEM specific header files */ +typedef struct _MPI2_CONFIG_PAGE_MAN_10 { + MPI2_CONFIG_PAGE_HEADER Header; /* 00h */ + U8 OEMIdentifier; /* 04h */ + U8 Reserved1; /* 05h */ + U16 Reserved2; /* 08h */ + U32 Reserved3; /* 0Ch */ + U32 GenericFlags0; /* 10h */ + U32 GenericFlags1; /* 14h */ + U32 Reserved4; /* 18h */ + U32 OEMSpecificFlags0; /* 1Ch */ + U32 OEMSpecificFlags1; /* 20h */ + U32 Reserved5[18]; /* 24h-60h*/ +} MPI2_CONFIG_PAGE_MAN_10, + MPI2_POINTER PTR_MPI2_CONFIG_PAGE_MAN_10, + Mpi2ManufacturingPage10_t, MPI2_POINTER pMpi2ManufacturingPage10_t; + struct MPT2SAS_DEVICE { struct MPT2SAS_TARGET *sas_target; unsigned int lun; @@ -431,7 +464,7 @@ typedef void (*MPT_ADD_SGE)(void *paddr, u32 flags_length, dma_addr_t dma_addr); * @fw_event_list: list of fw events * @aen_event_read_flag: event log was read * @broadcast_aen_busy: broadcast aen waiting to be serviced - * @ioc_reset_in_progress: host reset in progress + * @shost_recovery: host reset in progress * @ioc_reset_in_progress_lock: * @ioc_link_reset_in_progress: phy/hard reset in progress * @ignore_loginfos: ignore loginfos during task managment @@ -460,6 +493,7 @@ typedef void (*MPT_ADD_SGE)(void *paddr, u32 flags_length, dma_addr_t dma_addr); * @facts: static facts data * @pfacts: static port facts data * @manu_pg0: static manufacturing page 0 + * @manu_pg10: static manufacturing page 10 * @bios_pg2: static bios page 2 * @bios_pg3: static bios page 3 * @ioc_pg8: static ioc page 8 @@ -544,7 +578,6 @@ struct MPT2SAS_ADAPTER { /* misc flags */ int aen_event_read_flag; u8 broadcast_aen_busy; - u8 ioc_reset_in_progress; u8 shost_recovery; spinlock_t ioc_reset_in_progress_lock; u8 ioc_link_reset_in_progress; @@ -663,6 +696,7 @@ struct MPT2SAS_ADAPTER { dma_addr_t diag_buffer_dma[MPI2_DIAG_BUF_TYPE_COUNT]; u8 diag_buffer_status[MPI2_DIAG_BUF_TYPE_COUNT]; u32 unique_id[MPI2_DIAG_BUF_TYPE_COUNT]; + Mpi2ManufacturingPage10_t manu_pg10; u32 product_specific[MPI2_DIAG_BUF_TYPE_COUNT][23]; u32 diagnostic_flags[MPI2_DIAG_BUF_TYPE_COUNT]; }; @@ -734,6 +768,8 @@ void mpt2sas_config_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID, u32 re int mpt2sas_config_get_number_hba_phys(struct MPT2SAS_ADAPTER *ioc, u8 *num_phys); int mpt2sas_config_get_manufacturing_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t *mpi_reply, Mpi2ManufacturingPage0_t *config_page); +int mpt2sas_config_get_manufacturing_pg10(struct MPT2SAS_ADAPTER *ioc, + Mpi2ConfigReply_t *mpi_reply, Mpi2ManufacturingPage10_t *config_page); int mpt2sas_config_get_bios_pg2(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t *mpi_reply, Mpi2BiosPage2_t *config_page); int mpt2sas_config_get_bios_pg3(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t @@ -749,7 +785,7 @@ int mpt2sas_config_get_sas_iounit_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigRep int mpt2sas_config_get_iounit_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t *mpi_reply, Mpi2IOUnitPage1_t *config_page); int mpt2sas_config_set_iounit_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t - *mpi_reply, Mpi2IOUnitPage1_t config_page); + *mpi_reply, Mpi2IOUnitPage1_t *config_page); int mpt2sas_config_get_sas_iounit_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t *mpi_reply, Mpi2SasIOUnitPage1_t *config_page, u16 sz); int mpt2sas_config_get_ioc_pg8(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t @@ -776,7 +812,6 @@ int mpt2sas_config_get_volume_handle(struct MPT2SAS_ADAPTER *ioc, u16 pd_handle, u16 *volume_handle); int mpt2sas_config_get_volume_wwid(struct MPT2SAS_ADAPTER *ioc, u16 volume_handle, u64 *wwid); - /* ctl shared API */ extern struct device_attribute *mpt2sas_host_attrs[]; extern struct device_attribute *mpt2sas_dev_attrs[]; @@ -798,9 +833,11 @@ int mpt2sas_transport_add_host_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy *mpt2sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev); int mpt2sas_transport_add_expander_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy *mpt2sas_phy, Mpi2ExpanderPage1_t expander_pg1, struct device *parent_dev); -void mpt2sas_transport_update_phy_link_change(struct MPT2SAS_ADAPTER *ioc, u16 handle, +void mpt2sas_transport_update_links(struct MPT2SAS_ADAPTER *ioc, u16 handle, u16 attached_handle, u8 phy_number, u8 link_rate); extern struct sas_function_template mpt2sas_transport_functions; extern struct scsi_transport_template *mpt2sas_transport_template; +extern int scsi_internal_device_block(struct scsi_device *sdev); +extern int scsi_internal_device_unblock(struct scsi_device *sdev); #endif /* MPT2SAS_BASE_H_INCLUDED */ diff --git a/drivers/scsi/mpt2sas/mpt2sas_config.c b/drivers/scsi/mpt2sas/mpt2sas_config.c index 6ddee16..ab8c560 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_config.c +++ b/drivers/scsi/mpt2sas/mpt2sas_config.c @@ -72,15 +72,15 @@ /** * struct config_request - obtain dma memory via routine - * @config_page_sz: size - * @config_page: virt pointer - * @config_page_dma: phys pointer + * @sz: size + * @page: virt pointer + * @page_dma: phys pointer * */ struct config_request{ - u16 config_page_sz; - void *config_page; - dma_addr_t config_page_dma; + u16 sz; + void *page; + dma_addr_t page_dma; }; #ifdef CONFIG_SCSI_MPT2SAS_LOGGING @@ -175,6 +175,55 @@ _config_display_some_debug(struct MPT2SAS_ADAPTER *ioc, u16 smid, #endif /** + * _config_alloc_config_dma_memory - obtain physical memory + * @ioc: per adapter object + * @mem: struct config_request + * + * A wrapper for obtaining dma-able memory for config page request. + * + * Returns 0 for success, non-zero for failure. + */ +static int +_config_alloc_config_dma_memory(struct MPT2SAS_ADAPTER *ioc, + struct config_request *mem) +{ + int r = 0; + + if (mem->sz > ioc->config_page_sz) { + mem->page = dma_alloc_coherent(&ioc->pdev->dev, mem->sz, + &mem->page_dma, GFP_KERNEL); + if (!mem->page) { + printk(MPT2SAS_ERR_FMT "%s: dma_alloc_coherent" + " failed asking for (%d) bytes!!\n", + ioc->name, __func__, mem->sz); + r = -ENOMEM; + } + } else { /* use tmp buffer if less than 512 bytes */ + mem->page = ioc->config_page; + mem->page_dma = ioc->config_page_dma; + } + return r; +} + +/** + * _config_free_config_dma_memory - wrapper to free the memory + * @ioc: per adapter object + * @mem: struct config_request + * + * A wrapper to free dma-able memory when using _config_alloc_config_dma_memory. + * + * Returns 0 for success, non-zero for failure. + */ +static void +_config_free_config_dma_memory(struct MPT2SAS_ADAPTER *ioc, + struct config_request *mem) +{ + if (mem->sz > ioc->config_page_sz) + dma_free_coherent(&ioc->pdev->dev, mem->sz, mem->page, + mem->page_dma); +} + +/** * mpt2sas_config_done - config page completion routine * @ioc: per adapter object * @smid: system request message index @@ -206,6 +255,7 @@ mpt2sas_config_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID, u32 reply) #ifdef CONFIG_SCSI_MPT2SAS_LOGGING _config_display_some_debug(ioc, smid, "config_done", mpi_reply); #endif + ioc->config_cmds.smid = USHORT_MAX; complete(&ioc->config_cmds.done); } @@ -215,7 +265,9 @@ mpt2sas_config_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID, u32 reply) * @mpi_request: request message frame * @mpi_reply: reply mf payload returned from firmware * @timeout: timeout in seconds - * Context: sleep, the calling function needs to acquire the config_cmds.mutex + * @config_page: contents of the config page + * @config_page_sz: size of config page + * Context: sleep * * A generic API for config page requests to firmware. * @@ -228,16 +280,17 @@ mpt2sas_config_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID, u32 reply) */ static int _config_request(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigRequest_t - *mpi_request, Mpi2ConfigReply_t *mpi_reply, int timeout) + *mpi_request, Mpi2ConfigReply_t *mpi_reply, int timeout, + void *config_page, u16 config_page_sz) { u16 smid; u32 ioc_state; unsigned long timeleft; Mpi2ConfigRequest_t *config_request; int r; - u8 retry_count; - u8 issue_host_reset = 0; + u8 retry_count, issue_host_reset = 0; u16 wait_state_count; + struct config_request mem; mutex_lock(&ioc->config_cmds.mutex); if (ioc->config_cmds.status != MPT2_CMD_NOT_USED) { @@ -246,12 +299,44 @@ _config_request(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigRequest_t mutex_unlock(&ioc->config_cmds.mutex); return -EAGAIN; } + retry_count = 0; + memset(&mem, 0, sizeof(struct config_request)); + + if (config_page) { + mpi_request->Header.PageVersion = mpi_reply->Header.PageVersion; + mpi_request->Header.PageNumber = mpi_reply->Header.PageNumber; + mpi_request->Header.PageType = mpi_reply->Header.PageType; + mpi_request->Header.PageLength = mpi_reply->Header.PageLength; + mpi_request->ExtPageLength = mpi_reply->ExtPageLength; + mpi_request->ExtPageType = mpi_reply->ExtPageType; + if (mpi_request->Header.PageLength) + mem.sz = mpi_request->Header.PageLength * 4; + else + mem.sz = le16_to_cpu(mpi_reply->ExtPageLength) * 4; + r = _config_alloc_config_dma_memory(ioc, &mem); + if (r != 0) + goto out; + if (mpi_request->Action == + MPI2_CONFIG_ACTION_PAGE_WRITE_CURRENT) { + ioc->base_add_sg_single(&mpi_request->PageBufferSGE, + MPT2_CONFIG_COMMON_WRITE_SGLFLAGS | mem.sz, + mem.page_dma); + memcpy(mem.page, config_page, min_t(u16, mem.sz, + config_page_sz)); + } else { + memset(config_page, 0, config_page_sz); + ioc->base_add_sg_single(&mpi_request->PageBufferSGE, + MPT2_CONFIG_COMMON_SGLFLAGS | mem.sz, mem.page_dma); + } + } retry_config: if (retry_count) { - if (retry_count > 2) /* attempt only 2 retries */ - return -EFAULT; + if (retry_count > 2) { /* attempt only 2 retries */ + r = -EFAULT; + goto free_mem; + } printk(MPT2SAS_INFO_FMT "%s: attempting retry (%d)\n", ioc->name, __func__, retry_count); } @@ -262,8 +347,9 @@ _config_request(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigRequest_t printk(MPT2SAS_ERR_FMT "%s: failed due to ioc not operational\n", ioc->name, __func__); + ioc->config_cmds.status = MPT2_CMD_NOT_USED; r = -EFAULT; - goto out; + goto free_mem; } ssleep(1); ioc_state = mpt2sas_base_get_iocstate(ioc, 1); @@ -279,8 +365,9 @@ _config_request(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigRequest_t if (!smid) { printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n", ioc->name, __func__); + ioc->config_cmds.status = MPT2_CMD_NOT_USED; r = -EAGAIN; - goto out; + goto free_mem; } r = 0; @@ -292,6 +379,7 @@ _config_request(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigRequest_t #ifdef CONFIG_SCSI_MPT2SAS_LOGGING _config_display_some_debug(ioc, smid, "config_request", NULL); #endif + init_completion(&ioc->config_cmds.done); mpt2sas_base_put_smid_default(ioc, smid, config_request->VF_ID); timeleft = wait_for_completion_timeout(&ioc->config_cmds.done, timeout*HZ); @@ -303,22 +391,31 @@ _config_request(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigRequest_t retry_count++; if (ioc->config_cmds.smid == smid) mpt2sas_base_free_smid(ioc, smid); - if ((ioc->shost_recovery) || - (ioc->config_cmds.status & MPT2_CMD_RESET)) + if ((ioc->shost_recovery) || (ioc->config_cmds.status & + MPT2_CMD_RESET)) goto retry_config; issue_host_reset = 1; r = -EFAULT; - goto out; + goto free_mem; } + if (ioc->config_cmds.status & MPT2_CMD_REPLY_VALID) memcpy(mpi_reply, ioc->config_cmds.reply, sizeof(Mpi2ConfigReply_t)); if (retry_count) - printk(MPT2SAS_INFO_FMT "%s: retry completed!!\n", - ioc->name, __func__); -out: + printk(MPT2SAS_INFO_FMT "%s: retry (%d) completed!!\n", + ioc->name, __func__, retry_count); + if (config_page && mpi_request->Action == + MPI2_CONFIG_ACTION_PAGE_READ_CURRENT) + memcpy(config_page, mem.page, min_t(u16, mem.sz, + config_page_sz)); + free_mem: + if (config_page) + _config_free_config_dma_memory(ioc, &mem); + out: ioc->config_cmds.status = MPT2_CMD_NOT_USED; mutex_unlock(&ioc->config_cmds.mutex); + if (issue_host_reset) mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP, FORCE_BIG_HAMMER); @@ -326,46 +423,43 @@ out: } /** - * _config_alloc_config_dma_memory - obtain physical memory + * mpt2sas_config_get_manufacturing_pg0 - obtain manufacturing page 0 * @ioc: per adapter object - * @mem: struct config_request - * - * A wrapper for obtaining dma-able memory for config page request. + * @mpi_reply: reply mf payload returned from firmware + * @config_page: contents of the config page + * Context: sleep. * * Returns 0 for success, non-zero for failure. */ -static int -_config_alloc_config_dma_memory(struct MPT2SAS_ADAPTER *ioc, - struct config_request *mem) +int +mpt2sas_config_get_manufacturing_pg0(struct MPT2SAS_ADAPTER *ioc, + Mpi2ConfigReply_t *mpi_reply, Mpi2ManufacturingPage0_t *config_page) { - int r = 0; + Mpi2ConfigRequest_t mpi_request; + int r; - mem->config_page = pci_alloc_consistent(ioc->pdev, mem->config_page_sz, - &mem->config_page_dma); - if (!mem->config_page) - r = -ENOMEM; - return r; -} + memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); + mpi_request.Function = MPI2_FUNCTION_CONFIG; + mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; + mpi_request.Header.PageType = MPI2_CONFIG_PAGETYPE_MANUFACTURING; + mpi_request.Header.PageNumber = 0; + mpi_request.Header.PageVersion = MPI2_MANUFACTURING0_PAGEVERSION; + mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); + r = _config_request(ioc, &mpi_request, mpi_reply, + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); + if (r) + goto out; -/** - * _config_free_config_dma_memory - wrapper to free the memory - * @ioc: per adapter object - * @mem: struct config_request - * - * A wrapper to free dma-able memory when using _config_alloc_config_dma_memory. - * - * Returns 0 for success, non-zero for failure. - */ -static void -_config_free_config_dma_memory(struct MPT2SAS_ADAPTER *ioc, - struct config_request *mem) -{ - pci_free_consistent(ioc->pdev, mem->config_page_sz, mem->config_page, - mem->config_page_dma); + mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; + r = _config_request(ioc, &mpi_request, mpi_reply, + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); + out: + return r; } /** - * mpt2sas_config_get_manufacturing_pg0 - obtain manufacturing page 0 + * mpt2sas_config_get_manufacturing_pg10 - obtain manufacturing page 10 * @ioc: per adapter object * @mpi_reply: reply mf payload returned from firmware * @config_page: contents of the config page @@ -374,53 +468,28 @@ _config_free_config_dma_memory(struct MPT2SAS_ADAPTER *ioc, * Returns 0 for success, non-zero for failure. */ int -mpt2sas_config_get_manufacturing_pg0(struct MPT2SAS_ADAPTER *ioc, - Mpi2ConfigReply_t *mpi_reply, Mpi2ManufacturingPage0_t *config_page) +mpt2sas_config_get_manufacturing_pg10(struct MPT2SAS_ADAPTER *ioc, + Mpi2ConfigReply_t *mpi_reply, Mpi2ManufacturingPage10_t *config_page) { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; - memset(config_page, 0, sizeof(Mpi2ManufacturingPage0_t)); memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; mpi_request.Header.PageType = MPI2_CONFIG_PAGETYPE_MANUFACTURING; - mpi_request.Header.PageNumber = 0; + mpi_request.Header.PageNumber = 10; mpi_request.Header.PageVersion = MPI2_MANUFACTURING0_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.Header.PageLength = mpi_reply->Header.PageLength; - mem.config_page_sz = le16_to_cpu(mpi_reply->Header.PageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, mem.config_page_sz, - sizeof(Mpi2ManufacturingPage0_t))); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); out: return r; } @@ -440,9 +509,7 @@ mpt2sas_config_get_bios_pg2(struct MPT2SAS_ADAPTER *ioc, { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; - memset(config_page, 0, sizeof(Mpi2BiosPage2_t)); memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; @@ -451,37 +518,14 @@ mpt2sas_config_get_bios_pg2(struct MPT2SAS_ADAPTER *ioc, mpi_request.Header.PageVersion = MPI2_BIOSPAGE2_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.Header.PageLength = mpi_reply->Header.PageLength; - mem.config_page_sz = le16_to_cpu(mpi_reply->Header.PageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, mem.config_page_sz, - sizeof(Mpi2BiosPage2_t))); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); out: return r; } @@ -501,9 +545,7 @@ mpt2sas_config_get_bios_pg3(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; - memset(config_page, 0, sizeof(Mpi2BiosPage3_t)); memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; @@ -512,37 +554,14 @@ mpt2sas_config_get_bios_pg3(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t mpi_request.Header.PageVersion = MPI2_BIOSPAGE3_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.Header.PageLength = mpi_reply->Header.PageLength; - mem.config_page_sz = le16_to_cpu(mpi_reply->Header.PageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, mem.config_page_sz, - sizeof(Mpi2BiosPage3_t))); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); out: return r; } @@ -562,9 +581,7 @@ mpt2sas_config_get_iounit_pg0(struct MPT2SAS_ADAPTER *ioc, { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; - memset(config_page, 0, sizeof(Mpi2IOUnitPage0_t)); memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; @@ -573,37 +590,14 @@ mpt2sas_config_get_iounit_pg0(struct MPT2SAS_ADAPTER *ioc, mpi_request.Header.PageVersion = MPI2_IOUNITPAGE0_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.Header.PageLength = mpi_reply->Header.PageLength; - mem.config_page_sz = le16_to_cpu(mpi_reply->Header.PageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, mem.config_page_sz, - sizeof(Mpi2IOUnitPage0_t))); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); out: return r; } @@ -623,9 +617,7 @@ mpt2sas_config_get_iounit_pg1(struct MPT2SAS_ADAPTER *ioc, { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; - memset(config_page, 0, sizeof(Mpi2IOUnitPage1_t)); memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; @@ -634,37 +626,14 @@ mpt2sas_config_get_iounit_pg1(struct MPT2SAS_ADAPTER *ioc, mpi_request.Header.PageVersion = MPI2_IOUNITPAGE1_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.Header.PageLength = mpi_reply->Header.PageLength; - mem.config_page_sz = le16_to_cpu(mpi_reply->Header.PageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, mem.config_page_sz, - sizeof(Mpi2IOUnitPage1_t))); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); out: return r; } @@ -680,11 +649,10 @@ mpt2sas_config_get_iounit_pg1(struct MPT2SAS_ADAPTER *ioc, */ int mpt2sas_config_set_iounit_pg1(struct MPT2SAS_ADAPTER *ioc, - Mpi2ConfigReply_t *mpi_reply, Mpi2IOUnitPage1_t config_page) + Mpi2ConfigReply_t *mpi_reply, Mpi2IOUnitPage1_t *config_page) { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; @@ -694,38 +662,14 @@ mpt2sas_config_set_iounit_pg1(struct MPT2SAS_ADAPTER *ioc, mpi_request.Header.PageVersion = MPI2_IOUNITPAGE1_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_WRITE_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.Header.PageLength = mpi_reply->Header.PageLength; - mem.config_page_sz = le16_to_cpu(mpi_reply->Header.PageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - - memset(mem.config_page, 0, mem.config_page_sz); - memcpy(mem.config_page, &config_page, - sizeof(Mpi2IOUnitPage1_t)); - - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_WRITE_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); out: return r; } @@ -745,9 +689,7 @@ mpt2sas_config_get_ioc_pg8(struct MPT2SAS_ADAPTER *ioc, { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; - memset(config_page, 0, sizeof(Mpi2IOCPage8_t)); memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; @@ -756,37 +698,14 @@ mpt2sas_config_get_ioc_pg8(struct MPT2SAS_ADAPTER *ioc, mpi_request.Header.PageVersion = MPI2_IOCPAGE8_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.Header.PageLength = mpi_reply->Header.PageLength; - mem.config_page_sz = le16_to_cpu(mpi_reply->Header.PageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, mem.config_page_sz, - sizeof(Mpi2IOCPage8_t))); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); out: return r; } @@ -808,9 +727,7 @@ mpt2sas_config_get_sas_device_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; - memset(config_page, 0, sizeof(Mpi2SasDevicePage0_t)); memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; @@ -820,39 +737,15 @@ mpt2sas_config_get_sas_device_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t mpi_request.Header.PageNumber = 0; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.PageAddress = cpu_to_le32(form | handle); mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.ExtPageLength = mpi_reply->ExtPageLength; - mpi_request.ExtPageType = mpi_reply->ExtPageType; - mem.config_page_sz = le16_to_cpu(mpi_reply->ExtPageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, mem.config_page_sz, - sizeof(Mpi2SasDevicePage0_t))); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); out: return r; } @@ -874,9 +767,7 @@ mpt2sas_config_get_sas_device_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; - memset(config_page, 0, sizeof(Mpi2SasDevicePage1_t)); memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; @@ -886,39 +777,15 @@ mpt2sas_config_get_sas_device_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t mpi_request.Header.PageNumber = 1; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.PageAddress = cpu_to_le32(form | handle); mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.ExtPageLength = mpi_reply->ExtPageLength; - mpi_request.ExtPageType = mpi_reply->ExtPageType; - mem.config_page_sz = le16_to_cpu(mpi_reply->ExtPageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, mem.config_page_sz, - sizeof(Mpi2SasDevicePage1_t))); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); out: return r; } @@ -936,11 +803,11 @@ mpt2sas_config_get_number_hba_phys(struct MPT2SAS_ADAPTER *ioc, u8 *num_phys) { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; u16 ioc_status; Mpi2ConfigReply_t mpi_reply; Mpi2SasIOUnitPage0_t config_page; + *num_phys = 0; memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; @@ -950,44 +817,20 @@ mpt2sas_config_get_number_hba_phys(struct MPT2SAS_ADAPTER *ioc, u8 *num_phys) mpi_request.Header.PageVersion = MPI2_SASIOUNITPAGE0_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, &mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply.Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply.Header.PageNumber; - mpi_request.Header.PageType = mpi_reply.Header.PageType; - mpi_request.ExtPageLength = mpi_reply.ExtPageLength; - mpi_request.ExtPageType = mpi_reply.ExtPageType; - mem.config_page_sz = le16_to_cpu(mpi_reply.ExtPageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, &mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, &config_page, + sizeof(Mpi2SasIOUnitPage0_t)); if (!r) { ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK; - if (ioc_status == MPI2_IOCSTATUS_SUCCESS) { - memcpy(&config_page, mem.config_page, - min_t(u16, mem.config_page_sz, - sizeof(Mpi2SasIOUnitPage0_t))); + if (ioc_status == MPI2_IOCSTATUS_SUCCESS) *num_phys = config_page.NumPhys; - } } - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - out: return r; } @@ -1011,8 +854,7 @@ mpt2sas_config_get_sas_iounit_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; - memset(config_page, 0, sz); + memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; @@ -1022,37 +864,13 @@ mpt2sas_config_get_sas_iounit_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t mpi_request.Header.PageVersion = MPI2_SASIOUNITPAGE0_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.ExtPageLength = mpi_reply->ExtPageLength; - mpi_request.ExtPageType = mpi_reply->ExtPageType; - mem.config_page_sz = le16_to_cpu(mpi_reply->ExtPageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, sz, mem.config_page_sz)); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, sz); out: return r; } @@ -1076,9 +894,7 @@ mpt2sas_config_get_sas_iounit_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; - memset(config_page, 0, sz); memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; @@ -1088,37 +904,13 @@ mpt2sas_config_get_sas_iounit_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t mpi_request.Header.PageVersion = MPI2_SASIOUNITPAGE0_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.ExtPageLength = mpi_reply->ExtPageLength; - mpi_request.ExtPageType = mpi_reply->ExtPageType; - mem.config_page_sz = le16_to_cpu(mpi_reply->ExtPageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, sz, mem.config_page_sz)); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, sz); out: return r; } @@ -1140,9 +932,7 @@ mpt2sas_config_get_expander_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; - memset(config_page, 0, sizeof(Mpi2ExpanderPage0_t)); memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; @@ -1152,39 +942,15 @@ mpt2sas_config_get_expander_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t mpi_request.Header.PageVersion = MPI2_SASEXPANDER0_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.PageAddress = cpu_to_le32(form | handle); mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.ExtPageLength = mpi_reply->ExtPageLength; - mpi_request.ExtPageType = mpi_reply->ExtPageType; - mem.config_page_sz = le16_to_cpu(mpi_reply->ExtPageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, mem.config_page_sz, - sizeof(Mpi2ExpanderPage0_t))); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); out: return r; } @@ -1207,9 +973,7 @@ mpt2sas_config_get_expander_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; - memset(config_page, 0, sizeof(Mpi2ExpanderPage1_t)); memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; @@ -1219,7 +983,7 @@ mpt2sas_config_get_expander_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t mpi_request.Header.PageVersion = MPI2_SASEXPANDER1_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; @@ -1227,33 +991,9 @@ mpt2sas_config_get_expander_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t cpu_to_le32(MPI2_SAS_EXPAND_PGAD_FORM_HNDL_PHY_NUM | (phy_number << MPI2_SAS_EXPAND_PGAD_PHYNUM_SHIFT) | handle); mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.ExtPageLength = mpi_reply->ExtPageLength; - mpi_request.ExtPageType = mpi_reply->ExtPageType; - mem.config_page_sz = le16_to_cpu(mpi_reply->ExtPageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, mem.config_page_sz, - sizeof(Mpi2ExpanderPage1_t))); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); out: return r; } @@ -1275,9 +1015,7 @@ mpt2sas_config_get_enclosure_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; - memset(config_page, 0, sizeof(Mpi2SasEnclosurePage0_t)); memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; @@ -1287,39 +1025,15 @@ mpt2sas_config_get_enclosure_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t mpi_request.Header.PageVersion = MPI2_SASENCLOSURE0_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.PageAddress = cpu_to_le32(form | handle); mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.ExtPageLength = mpi_reply->ExtPageLength; - mpi_request.ExtPageType = mpi_reply->ExtPageType; - mem.config_page_sz = le16_to_cpu(mpi_reply->ExtPageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, mem.config_page_sz, - sizeof(Mpi2SasEnclosurePage0_t))); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); out: return r; } @@ -1340,9 +1054,7 @@ mpt2sas_config_get_phy_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; - memset(config_page, 0, sizeof(Mpi2SasPhyPage0_t)); memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; @@ -1352,40 +1064,16 @@ mpt2sas_config_get_phy_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t mpi_request.Header.PageVersion = MPI2_SASPHY0_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.PageAddress = cpu_to_le32(MPI2_SAS_PHY_PGAD_FORM_PHY_NUMBER | phy_number); mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.ExtPageLength = mpi_reply->ExtPageLength; - mpi_request.ExtPageType = mpi_reply->ExtPageType; - mem.config_page_sz = le16_to_cpu(mpi_reply->ExtPageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, mem.config_page_sz, - sizeof(Mpi2SasPhyPage0_t))); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); out: return r; } @@ -1406,9 +1094,7 @@ mpt2sas_config_get_phy_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; - memset(config_page, 0, sizeof(Mpi2SasPhyPage1_t)); memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; @@ -1418,40 +1104,16 @@ mpt2sas_config_get_phy_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t mpi_request.Header.PageVersion = MPI2_SASPHY1_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.PageAddress = cpu_to_le32(MPI2_SAS_PHY_PGAD_FORM_PHY_NUMBER | phy_number); mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.ExtPageLength = mpi_reply->ExtPageLength; - mpi_request.ExtPageType = mpi_reply->ExtPageType; - mem.config_page_sz = le16_to_cpu(mpi_reply->ExtPageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, mem.config_page_sz, - sizeof(Mpi2SasPhyPage1_t))); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); out: return r; } @@ -1474,9 +1136,7 @@ mpt2sas_config_get_raid_volume_pg1(struct MPT2SAS_ADAPTER *ioc, { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; - memset(config_page, 0, sizeof(Mpi2RaidVolPage1_t)); memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; @@ -1485,38 +1145,15 @@ mpt2sas_config_get_raid_volume_pg1(struct MPT2SAS_ADAPTER *ioc, mpi_request.Header.PageVersion = MPI2_RAIDVOLPAGE1_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.PageAddress = cpu_to_le32(form | handle); mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.Header.PageLength = mpi_reply->Header.PageLength; - mem.config_page_sz = le16_to_cpu(mpi_reply->Header.PageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, mem.config_page_sz, - sizeof(Mpi2RaidVolPage1_t))); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); out: return r; } @@ -1535,10 +1172,9 @@ mpt2sas_config_get_number_pds(struct MPT2SAS_ADAPTER *ioc, u16 handle, u8 *num_pds) { Mpi2ConfigRequest_t mpi_request; - Mpi2RaidVolPage0_t *config_page; + Mpi2RaidVolPage0_t config_page; Mpi2ConfigReply_t mpi_reply; int r; - struct config_request mem; u16 ioc_status; memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); @@ -1550,43 +1186,23 @@ mpt2sas_config_get_number_pds(struct MPT2SAS_ADAPTER *ioc, u16 handle, mpi_request.Header.PageVersion = MPI2_RAIDVOLPAGE0_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, &mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.PageAddress = cpu_to_le32(MPI2_RAID_VOLUME_PGAD_FORM_HANDLE | handle); mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply.Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply.Header.PageNumber; - mpi_request.Header.PageType = mpi_reply.Header.PageType; - mpi_request.Header.PageLength = mpi_reply.Header.PageLength; - mem.config_page_sz = le16_to_cpu(mpi_reply.Header.PageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, &mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, &config_page, + sizeof(Mpi2RaidVolPage0_t)); if (!r) { ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK; - if (ioc_status == MPI2_IOCSTATUS_SUCCESS) { - config_page = mem.config_page; - *num_pds = config_page->NumPhysDisks; - } + if (ioc_status == MPI2_IOCSTATUS_SUCCESS) + *num_pds = config_page.NumPhysDisks; } - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - out: return r; } @@ -1610,10 +1226,8 @@ mpt2sas_config_get_raid_volume_pg0(struct MPT2SAS_ADAPTER *ioc, { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); - memset(config_page, 0, sz); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; mpi_request.Header.PageType = MPI2_CONFIG_PAGETYPE_RAID_VOLUME; @@ -1621,37 +1235,14 @@ mpt2sas_config_get_raid_volume_pg0(struct MPT2SAS_ADAPTER *ioc, mpi_request.Header.PageVersion = MPI2_RAIDVOLPAGE0_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.PageAddress = cpu_to_le32(form | handle); mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.Header.PageLength = mpi_reply->Header.PageLength; - mem.config_page_sz = le16_to_cpu(mpi_reply->Header.PageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, sz, mem.config_page_sz)); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, sz); out: return r; } @@ -1674,10 +1265,8 @@ mpt2sas_config_get_phys_disk_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t { Mpi2ConfigRequest_t mpi_request; int r; - struct config_request mem; memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); - memset(config_page, 0, sizeof(Mpi2RaidPhysDiskPage0_t)); mpi_request.Function = MPI2_FUNCTION_CONFIG; mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; mpi_request.Header.PageType = MPI2_CONFIG_PAGETYPE_RAID_PHYSDISK; @@ -1685,38 +1274,15 @@ mpt2sas_config_get_phys_disk_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t mpi_request.Header.PageVersion = MPI2_RAIDPHYSDISKPAGE0_PAGEVERSION; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.PageAddress = cpu_to_le32(form | form_specific); mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply->Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply->Header.PageNumber; - mpi_request.Header.PageType = mpi_reply->Header.PageType; - mpi_request.Header.PageLength = mpi_reply->Header.PageLength; - mem.config_page_sz = le16_to_cpu(mpi_reply->Header.PageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); r = _config_request(ioc, &mpi_request, mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); - if (!r) - memcpy(config_page, mem.config_page, - min_t(u16, mem.config_page_sz, - sizeof(Mpi2RaidPhysDiskPage0_t))); - - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + sizeof(*config_page)); out: return r; } @@ -1734,11 +1300,10 @@ int mpt2sas_config_get_volume_handle(struct MPT2SAS_ADAPTER *ioc, u16 pd_handle, u16 *volume_handle) { - Mpi2RaidConfigurationPage0_t *config_page; + Mpi2RaidConfigurationPage0_t *config_page = NULL; Mpi2ConfigRequest_t mpi_request; Mpi2ConfigReply_t mpi_reply; - int r, i; - struct config_request mem; + int r, i, config_page_sz; u16 ioc_status; *volume_handle = 0; @@ -1751,40 +1316,27 @@ mpt2sas_config_get_volume_handle(struct MPT2SAS_ADAPTER *ioc, u16 pd_handle, mpi_request.Header.PageNumber = 0; mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); r = _config_request(ioc, &mpi_request, &mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); if (r) goto out; mpi_request.PageAddress = cpu_to_le32(MPI2_RAID_PGAD_FORM_ACTIVE_CONFIG); mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; - mpi_request.Header.PageVersion = mpi_reply.Header.PageVersion; - mpi_request.Header.PageNumber = mpi_reply.Header.PageNumber; - mpi_request.Header.PageType = mpi_reply.Header.PageType; - mpi_request.ExtPageLength = mpi_reply.ExtPageLength; - mpi_request.ExtPageType = mpi_reply.ExtPageType; - mem.config_page_sz = le16_to_cpu(mpi_reply.ExtPageLength) * 4; - if (mem.config_page_sz > ioc->config_page_sz) { - r = _config_alloc_config_dma_memory(ioc, &mem); - if (r) - goto out; - } else { - mem.config_page_dma = ioc->config_page_dma; - mem.config_page = ioc->config_page; - } - ioc->base_add_sg_single(&mpi_request.PageBufferSGE, - MPT2_CONFIG_COMMON_SGLFLAGS | mem.config_page_sz, - mem.config_page_dma); + config_page_sz = (le16_to_cpu(mpi_reply.ExtPageLength) * 4); + config_page = kmalloc(config_page_sz, GFP_KERNEL); + if (!config_page) + goto out; r = _config_request(ioc, &mpi_request, &mpi_reply, - MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT); + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, + config_page_sz); if (r) goto out; r = -1; ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK; if (ioc_status != MPI2_IOCSTATUS_SUCCESS) - goto done; - config_page = mem.config_page; + goto out; for (i = 0; i < config_page->NumElements; i++) { if ((config_page->ConfigElement[i].ElementFlags & MPI2_RAIDCONFIG0_EFLAGS_MASK_ELEMENT_TYPE) != @@ -1795,15 +1347,11 @@ mpt2sas_config_get_volume_handle(struct MPT2SAS_ADAPTER *ioc, u16 pd_handle, *volume_handle = le16_to_cpu(config_page-> ConfigElement[i].VolDevHandle); r = 0; - goto done; + goto out; } } - - done: - if (mem.config_page_sz > ioc->config_page_sz) - _config_free_config_dma_memory(ioc, &mem); - out: + kfree(config_page); return r; } diff --git a/drivers/scsi/mpt2sas/mpt2sas_ctl.c b/drivers/scsi/mpt2sas/mpt2sas_ctl.c index 14e473d..c2a5101 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_ctl.c +++ b/drivers/scsi/mpt2sas/mpt2sas_ctl.c @@ -1963,7 +1963,6 @@ _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg) { enum block_state state; long ret = -EINVAL; - unsigned long flags; state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING; @@ -1989,13 +1988,8 @@ _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg) !ioc) return -ENODEV; - spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); - if (ioc->shost_recovery) { - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, - flags); + if (ioc->shost_recovery) return -EAGAIN; - } - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_command)) { uarg = arg; @@ -2098,7 +2092,6 @@ _ctl_compat_mpt_command(struct file *file, unsigned cmd, unsigned long arg) struct mpt2_ioctl_command karg; struct MPT2SAS_ADAPTER *ioc; enum block_state state; - unsigned long flags; if (_IOC_SIZE(cmd) != sizeof(struct mpt2_ioctl_command32)) return -EINVAL; @@ -2113,13 +2106,8 @@ _ctl_compat_mpt_command(struct file *file, unsigned cmd, unsigned long arg) if (_ctl_verify_adapter(karg32.hdr.ioc_number, &ioc) == -1 || !ioc) return -ENODEV; - spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); - if (ioc->shost_recovery) { - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, - flags); + if (ioc->shost_recovery) return -EAGAIN; - } - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); memset(&karg, 0, sizeof(struct mpt2_ioctl_command)); karg.hdr.ioc_number = karg32.hdr.ioc_number; diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c index 2e9a444..774b345 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c +++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c @@ -103,7 +103,6 @@ struct sense_info { }; -#define MPT2SAS_RESCAN_AFTER_HOST_RESET (0xFFFF) /** * struct fw_event_work - firmware event struct * @list: link list framework @@ -1502,7 +1501,13 @@ _scsih_slave_configure(struct scsi_device *sdev) break; case MPI2_RAID_VOL_TYPE_RAID1E: qdepth = MPT2SAS_RAID_QUEUE_DEPTH; - r_level = "RAID1E"; + if (ioc->manu_pg10.OEMIdentifier && + (ioc->manu_pg10.GenericFlags0 & + MFG10_GF0_R10_DISPLAY) && + !(raid_device->num_pds % 2)) + r_level = "RAID10"; + else + r_level = "RAID1E"; break; case MPI2_RAID_VOL_TYPE_RAID1: qdepth = MPT2SAS_RAID_QUEUE_DEPTH; @@ -1786,17 +1791,18 @@ mpt2sas_scsih_issue_tm(struct MPT2SAS_ADAPTER *ioc, u16 handle, uint lun, u32 ioc_state; unsigned long timeleft; u8 VF_ID = 0; - unsigned long flags; - spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); - if (ioc->tm_cmds.status != MPT2_CMD_NOT_USED || - ioc->shost_recovery) { - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); + if (ioc->tm_cmds.status != MPT2_CMD_NOT_USED) { + printk(MPT2SAS_INFO_FMT "%s: tm_cmd busy!!!\n", + __func__, ioc->name); + return; + } + + if (ioc->shost_recovery) { printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n", __func__, ioc->name); return; } - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); ioc_state = mpt2sas_base_get_iocstate(ioc, 0); if (ioc_state & MPI2_DOORBELL_USED) { @@ -1830,6 +1836,7 @@ mpt2sas_scsih_issue_tm(struct MPT2SAS_ADAPTER *ioc, u16 handle, uint lun, mpi_request->TaskMID = cpu_to_le16(smid_task); int_to_scsilun(lun, (struct scsi_lun *)mpi_request->LUN); mpt2sas_scsih_set_tm_flag(ioc, handle); + init_completion(&ioc->tm_cmds.done); mpt2sas_base_put_smid_hi_priority(ioc, smid, VF_ID); timeleft = wait_for_completion_timeout(&ioc->tm_cmds.done, timeout*HZ); mpt2sas_scsih_clear_tm_flag(ioc, handle); @@ -2222,7 +2229,7 @@ _scsih_ublock_io_device(struct MPT2SAS_ADAPTER *ioc, u16 handle) MPT2SAS_INFO_FMT "SDEV_RUNNING: " "handle(0x%04x)\n", ioc->name, handle)); sas_device_priv_data->block = 0; - scsi_device_set_state(sdev, SDEV_RUNNING); + scsi_internal_device_unblock(sdev); } } } @@ -2251,7 +2258,7 @@ _scsih_block_io_device(struct MPT2SAS_ADAPTER *ioc, u16 handle) MPT2SAS_INFO_FMT "SDEV_BLOCK: " "handle(0x%04x)\n", ioc->name, handle)); sas_device_priv_data->block = 1; - scsi_device_set_state(sdev, SDEV_BLOCK); + scsi_internal_device_block(sdev); } } } @@ -2327,6 +2334,7 @@ _scsih_block_io_to_children_attached_directly(struct MPT2SAS_ADAPTER *ioc, u16 handle; u16 reason_code; u8 phy_number; + u8 link_rate; for (i = 0; i < event_data->NumEntries; i++) { handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle); @@ -2337,6 +2345,11 @@ _scsih_block_io_to_children_attached_directly(struct MPT2SAS_ADAPTER *ioc, MPI2_EVENT_SAS_TOPO_RC_MASK; if (reason_code == MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING) _scsih_block_io_device(ioc, handle); + if (reason_code == MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED) { + link_rate = event_data->PHY[i].LinkRate >> 4; + if (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5) + _scsih_ublock_io_device(ioc, handle); + } } } @@ -2405,27 +2418,6 @@ _scsih_check_topo_delete_events(struct MPT2SAS_ADAPTER *ioc, } /** - * _scsih_queue_rescan - queue a topology rescan from user context - * @ioc: per adapter object - * - * Return nothing. - */ -static void -_scsih_queue_rescan(struct MPT2SAS_ADAPTER *ioc) -{ - struct fw_event_work *fw_event; - - if (ioc->wait_for_port_enable_to_complete) - return; - fw_event = kzalloc(sizeof(struct fw_event_work), GFP_ATOMIC); - if (!fw_event) - return; - fw_event->event = MPT2SAS_RESCAN_AFTER_HOST_RESET; - fw_event->ioc = ioc; - _scsih_fw_event_add(ioc, fw_event); -} - -/** * _scsih_flush_running_cmds - completing outstanding commands. * @ioc: per adapter object * @@ -2456,46 +2448,6 @@ _scsih_flush_running_cmds(struct MPT2SAS_ADAPTER *ioc) } /** - * mpt2sas_scsih_reset_handler - reset callback handler (for scsih) - * @ioc: per adapter object - * @reset_phase: phase - * - * The handler for doing any required cleanup or initialization. - * - * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET, - * MPT2_IOC_DONE_RESET - * - * Return nothing. - */ -void -mpt2sas_scsih_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase) -{ - switch (reset_phase) { - case MPT2_IOC_PRE_RESET: - dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: " - "MPT2_IOC_PRE_RESET\n", ioc->name, __func__)); - _scsih_fw_event_off(ioc); - break; - case MPT2_IOC_AFTER_RESET: - dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: " - "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__)); - if (ioc->tm_cmds.status & MPT2_CMD_PENDING) { - ioc->tm_cmds.status |= MPT2_CMD_RESET; - mpt2sas_base_free_smid(ioc, ioc->tm_cmds.smid); - complete(&ioc->tm_cmds.done); - } - _scsih_fw_event_on(ioc); - _scsih_flush_running_cmds(ioc); - break; - case MPT2_IOC_DONE_RESET: - dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: " - "MPT2_IOC_DONE_RESET\n", ioc->name, __func__)); - _scsih_queue_rescan(ioc); - break; - } -} - -/** * _scsih_setup_eedp - setup MPI request for EEDP transfer * @scmd: pointer to scsi command object * @mpi_request: pointer to the SCSI_IO reqest message frame @@ -2615,7 +2567,6 @@ _scsih_qcmd(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *)) Mpi2SCSIIORequest_t *mpi_request; u32 mpi_control; u16 smid; - unsigned long flags; scmd->scsi_done = done; sas_device_priv_data = scmd->device->hostdata; @@ -2634,13 +2585,10 @@ _scsih_qcmd(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *)) } /* see if we are busy with task managment stuff */ - spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); - if (sas_target_priv_data->tm_busy || - ioc->shost_recovery || ioc->ioc_link_reset_in_progress) { - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); + if (sas_target_priv_data->tm_busy) + return SCSI_MLQUEUE_DEVICE_BUSY; + else if (ioc->shost_recovery || ioc->ioc_link_reset_in_progress) return SCSI_MLQUEUE_HOST_BUSY; - } - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); if (scmd->sc_data_direction == DMA_FROM_DEVICE) mpi_control = MPI2_SCSIIO_CONTROL_READ; @@ -3189,25 +3137,6 @@ _scsih_io_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID, u32 reply) } /** - * _scsih_link_change - process phy link changes - * @ioc: per adapter object - * @handle: phy handle - * @attached_handle: valid for devices attached to link - * @phy_number: phy number - * @link_rate: new link rate - * Context: user. - * - * Return nothing. - */ -static void -_scsih_link_change(struct MPT2SAS_ADAPTER *ioc, u16 handle, u16 attached_handle, - u8 phy_number, u8 link_rate) -{ - mpt2sas_transport_update_phy_link_change(ioc, handle, attached_handle, - phy_number, link_rate); -} - -/** * _scsih_sas_host_refresh - refreshing sas host object contents * @ioc: per adapter object * @update: update link information @@ -3251,7 +3180,8 @@ _scsih_sas_host_refresh(struct MPT2SAS_ADAPTER *ioc, u8 update) le16_to_cpu(sas_iounit_pg0->PhyData[i]. ControllerDevHandle); if (update) - _scsih_link_change(ioc, + mpt2sas_transport_update_links( + ioc, ioc->sas_hba.phy[i].handle, le16_to_cpu(sas_iounit_pg0->PhyData[i]. AttachedDevHandle), i, @@ -3436,6 +3366,9 @@ _scsih_expander_add(struct MPT2SAS_ADAPTER *ioc, u16 handle) if (!handle) return -1; + if (ioc->shost_recovery) + return -1; + if ((mpt2sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0, MPI2_SAS_EXPAND_PGAD_FORM_HNDL, handle))) { printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n", @@ -3572,6 +3505,9 @@ _scsih_expander_remove(struct MPT2SAS_ADAPTER *ioc, u16 handle) struct _sas_node *sas_expander; unsigned long flags; + if (ioc->shost_recovery) + return; + spin_lock_irqsave(&ioc->sas_node_lock, flags); sas_expander = mpt2sas_scsih_expander_find_by_handle(ioc, handle); spin_unlock_irqrestore(&ioc->sas_node_lock, flags); @@ -3743,6 +3679,8 @@ _scsih_remove_device(struct MPT2SAS_ADAPTER *ioc, u16 handle) mutex_unlock(&ioc->tm_cmds.mutex); dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "issue target reset " "done: handle(0x%04x)\n", ioc->name, device_handle)); + if (ioc->shost_recovery) + goto out; } /* SAS_IO_UNIT_CNTR - send REMOVE_DEVICE */ @@ -3765,6 +3703,9 @@ _scsih_remove_device(struct MPT2SAS_ADAPTER *ioc, u16 handle) le32_to_cpu(mpi_reply.IOCLogInfo))); out: + + _scsih_ublock_io_device(ioc, handle); + mpt2sas_transport_port_remove(ioc, sas_device->sas_address, sas_device->parent_handle); @@ -3908,6 +3849,8 @@ _scsih_sas_topology_change_event(struct MPT2SAS_ADAPTER *ioc, u8 VF_ID, "expander event\n", ioc->name)); return; } + if (ioc->shost_recovery) + return; if (event_data->PHY[i].PhyStatus & MPI2_EVENT_SAS_TOPO_PHYSTATUS_VACANT) continue; @@ -3923,9 +3866,10 @@ _scsih_sas_topology_change_event(struct MPT2SAS_ADAPTER *ioc, u8 VF_ID, case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED: if (!parent_handle) { if (phy_number < ioc->sas_hba.num_phys) - _scsih_link_change(ioc, - ioc->sas_hba.phy[phy_number].handle, - handle, phy_number, link_rate_); + mpt2sas_transport_update_links( + ioc, + ioc->sas_hba.phy[phy_number].handle, + handle, phy_number, link_rate_); } else { spin_lock_irqsave(&ioc->sas_node_lock, flags); sas_expander = @@ -3935,17 +3879,14 @@ _scsih_sas_topology_change_event(struct MPT2SAS_ADAPTER *ioc, u8 VF_ID, flags); if (sas_expander) { if (phy_number < sas_expander->num_phys) - _scsih_link_change(ioc, - sas_expander-> - phy[phy_number].handle, - handle, phy_number, - link_rate_); + mpt2sas_transport_update_links( + ioc, + sas_expander-> + phy[phy_number].handle, + handle, phy_number, + link_rate_); } } - if (reason_code == MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED) { - if (link_rate_ >= MPI2_SAS_NEG_LINK_RATE_1_5) - _scsih_ublock_io_device(ioc, handle); - } if (reason_code == MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED) { if (link_rate_ < MPI2_SAS_NEG_LINK_RATE_1_5) break; @@ -4455,7 +4396,7 @@ _scsih_sas_pd_add(struct MPT2SAS_ADAPTER *ioc, return; } - _scsih_link_change(ioc, + mpt2sas_transport_update_links(ioc, le16_to_cpu(sas_device_pg0.ParentDevHandle), handle, sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5); @@ -4744,7 +4685,7 @@ _scsih_sas_ir_physical_disk_event(struct MPT2SAS_ADAPTER *ioc, u8 VF_ID, return; } - _scsih_link_change(ioc, + mpt2sas_transport_update_links(ioc, le16_to_cpu(sas_device_pg0.ParentDevHandle), handle, sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5); @@ -5156,22 +5097,9 @@ static void _scsih_remove_unresponding_devices(struct MPT2SAS_ADAPTER *ioc) { struct _sas_device *sas_device, *sas_device_next; - struct _sas_node *sas_expander, *sas_expander_next; + struct _sas_node *sas_expander; struct _raid_device *raid_device, *raid_device_next; - unsigned long flags; - _scsih_search_responding_sas_devices(ioc); - _scsih_search_responding_raid_devices(ioc); - _scsih_search_responding_expanders(ioc); - - spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); - ioc->shost_recovery = 0; - if (ioc->shost->shost_state == SHOST_RECOVERY) { - printk(MPT2SAS_INFO_FMT "putting controller into " - "SHOST_RUNNING\n", ioc->name); - scsi_host_set_state(ioc->shost, SHOST_RUNNING); - } - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); list_for_each_entry_safe(sas_device, sas_device_next, &ioc->sas_device_list, list) { @@ -5207,16 +5135,63 @@ _scsih_remove_unresponding_devices(struct MPT2SAS_ADAPTER *ioc) _scsih_raid_device_remove(ioc, raid_device); } - list_for_each_entry_safe(sas_expander, sas_expander_next, - &ioc->sas_expander_list, list) { + retry_expander_search: + sas_expander = NULL; + list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) { if (sas_expander->responding) { sas_expander->responding = 0; continue; } - printk("\tremoving expander: handle(0x%04x), " - " sas_addr(0x%016llx)\n", sas_expander->handle, - (unsigned long long)sas_expander->sas_address); _scsih_expander_remove(ioc, sas_expander->handle); + goto retry_expander_search; + } +} + +/** + * mpt2sas_scsih_reset_handler - reset callback handler (for scsih) + * @ioc: per adapter object + * @reset_phase: phase + * + * The handler for doing any required cleanup or initialization. + * + * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET, + * MPT2_IOC_DONE_RESET + * + * Return nothing. + */ +void +mpt2sas_scsih_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase) +{ + switch (reset_phase) { + case MPT2_IOC_PRE_RESET: + dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: " + "MPT2_IOC_PRE_RESET\n", ioc->name, __func__)); + _scsih_fw_event_off(ioc); + break; + case MPT2_IOC_AFTER_RESET: + dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: " + "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__)); + if (ioc->tm_cmds.status & MPT2_CMD_PENDING) { + ioc->tm_cmds.status |= MPT2_CMD_RESET; + mpt2sas_base_free_smid(ioc, ioc->tm_cmds.smid); + complete(&ioc->tm_cmds.done); + } + _scsih_fw_event_on(ioc); + _scsih_flush_running_cmds(ioc); + break; + case MPT2_IOC_DONE_RESET: + dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: " + "MPT2_IOC_DONE_RESET\n", ioc->name, __func__)); + _scsih_sas_host_refresh(ioc, 0); + _scsih_search_responding_sas_devices(ioc); + _scsih_search_responding_raid_devices(ioc); + _scsih_search_responding_expanders(ioc); + break; + case MPT2_IOC_RUNNING: + dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: " + "MPT2_IOC_RUNNING\n", ioc->name, __func__)); + _scsih_remove_unresponding_devices(ioc); + break; } } @@ -5236,14 +5211,6 @@ _firmware_event_work(struct work_struct *work) unsigned long flags; struct MPT2SAS_ADAPTER *ioc = fw_event->ioc; - /* This is invoked by calling _scsih_queue_rescan(). */ - if (fw_event->event == MPT2SAS_RESCAN_AFTER_HOST_RESET) { - _scsih_fw_event_free(ioc, fw_event); - _scsih_sas_host_refresh(ioc, 1); - _scsih_remove_unresponding_devices(ioc); - return; - } - /* the queue is being flushed so ignore this event */ spin_lock_irqsave(&ioc->fw_event_lock, flags); if (ioc->fw_events_off || ioc->remove_host) { @@ -5253,13 +5220,10 @@ _firmware_event_work(struct work_struct *work) } spin_unlock_irqrestore(&ioc->fw_event_lock, flags); - spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); if (ioc->shost_recovery) { - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); _scsih_fw_event_requeue(ioc, fw_event, 1000); return; } - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); switch (fw_event->event) { case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST: @@ -5461,6 +5425,8 @@ _scsih_expander_node_remove(struct MPT2SAS_ADAPTER *ioc, if (!sas_device) continue; _scsih_remove_device(ioc, sas_device->handle); + if (ioc->shost_recovery) + return; goto retry_device_search; } } @@ -5482,6 +5448,8 @@ _scsih_expander_node_remove(struct MPT2SAS_ADAPTER *ioc, if (!expander_sibling) continue; _scsih_expander_remove(ioc, expander_sibling->handle); + if (ioc->shost_recovery) + return; goto retry_expander_search; } } diff --git a/drivers/scsi/mpt2sas/mpt2sas_transport.c b/drivers/scsi/mpt2sas/mpt2sas_transport.c index 686695b..742324a 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_transport.c +++ b/drivers/scsi/mpt2sas/mpt2sas_transport.c @@ -140,11 +140,18 @@ _transport_set_identify(struct MPT2SAS_ADAPTER *ioc, u16 handle, u32 device_info; u32 ioc_status; + if (ioc->shost_recovery) { + printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n", + __func__, ioc->name); + return -EFAULT; + } + if ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) { printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n", + ioc->name, __FILE__, __LINE__, __func__); - return -1; + return -ENXIO; } ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & @@ -153,7 +160,7 @@ _transport_set_identify(struct MPT2SAS_ADAPTER *ioc, u16 handle, printk(MPT2SAS_ERR_FMT "handle(0x%04x), ioc_status(0x%04x)" "\nfailure at %s:%d/%s()!\n", ioc->name, handle, ioc_status, __FILE__, __LINE__, __func__); - return -1; + return -EIO; } memset(identify, 0, sizeof(identify)); @@ -288,21 +295,17 @@ _transport_expander_report_manufacture(struct MPT2SAS_ADAPTER *ioc, void *psge; u32 sgl_flags; u8 issue_reset = 0; - unsigned long flags; void *data_out = NULL; dma_addr_t data_out_dma; u32 sz; u64 *sas_address_le; u16 wait_state_count; - spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); - if (ioc->ioc_reset_in_progress) { - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); + if (ioc->shost_recovery) { printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n", __func__, ioc->name); return -EFAULT; } - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); mutex_lock(&ioc->transport_cmds.mutex); @@ -789,7 +792,7 @@ mpt2sas_transport_add_expander_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy } /** - * mpt2sas_transport_update_phy_link_change - refreshing phy link changes and attached devices + * mpt2sas_transport_update_links - refreshing phy link changes * @ioc: per adapter object * @handle: handle to sas_host or expander * @attached_handle: attached device handle @@ -799,13 +802,19 @@ mpt2sas_transport_add_expander_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy * Returns nothing. */ void -mpt2sas_transport_update_phy_link_change(struct MPT2SAS_ADAPTER *ioc, +mpt2sas_transport_update_links(struct MPT2SAS_ADAPTER *ioc, u16 handle, u16 attached_handle, u8 phy_number, u8 link_rate) { unsigned long flags; struct _sas_node *sas_node; struct _sas_phy *mpt2sas_phy; + if (ioc->shost_recovery) { + printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n", + __func__, ioc->name); + return; + } + spin_lock_irqsave(&ioc->sas_node_lock, flags); sas_node = _transport_sas_node_find_by_handle(ioc, handle); spin_unlock_irqrestore(&ioc->sas_node_lock, flags); @@ -1025,7 +1034,6 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, void *psge; u32 sgl_flags; u8 issue_reset = 0; - unsigned long flags; dma_addr_t dma_addr_in = 0; dma_addr_t dma_addr_out = 0; u16 wait_state_count; @@ -1045,14 +1053,11 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, return -EINVAL; } - spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); - if (ioc->ioc_reset_in_progress) { - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); + if (ioc->shost_recovery) { printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n", __func__, ioc->name); return -EFAULT; } - spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex); if (rc) diff --git a/drivers/scsi/pcmcia/nsp_cs.c b/drivers/scsi/pcmcia/nsp_cs.c index 70b60ad..e32c344 100644 --- a/drivers/scsi/pcmcia/nsp_cs.c +++ b/drivers/scsi/pcmcia/nsp_cs.c @@ -1713,7 +1713,7 @@ static int nsp_cs_config(struct pcmcia_device *link) nsp_dbg(NSP_DEBUG_INIT, "in"); - cfg_mem = kzalloc(sizeof(cfg_mem), GFP_KERNEL); + cfg_mem = kzalloc(sizeof(*cfg_mem), GFP_KERNEL); if (!cfg_mem) return -ENOMEM; cfg_mem->data = data; diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c new file mode 100644 index 0000000..4302f06 --- /dev/null +++ b/drivers/scsi/pmcraid.c @@ -0,0 +1,5604 @@ +/* + * pmcraid.c -- driver for PMC Sierra MaxRAID controller adapters + * + * Written By: PMC Sierra Corporation + * + * Copyright (C) 2008, 2009 PMC Sierra Inc + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, + * USA + * + */ +#include <linux/fs.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/ioport.h> +#include <linux/delay.h> +#include <linux/pci.h> +#include <linux/wait.h> +#include <linux/spinlock.h> +#include <linux/sched.h> +#include <linux/interrupt.h> +#include <linux/blkdev.h> +#include <linux/firmware.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/hdreg.h> +#include <linux/version.h> +#include <linux/io.h> +#include <asm/irq.h> +#include <asm/processor.h> +#include <linux/libata.h> +#include <linux/mutex.h> +#include <scsi/scsi.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_tcq.h> +#include <scsi/scsi_eh.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsicam.h> + +#include "pmcraid.h" + +/* + * Module configuration parameters + */ +static unsigned int pmcraid_debug_log; +static unsigned int pmcraid_disable_aen; +static unsigned int pmcraid_log_level = IOASC_LOG_LEVEL_MUST; + +/* + * Data structures to support multiple adapters by the LLD. + * pmcraid_adapter_count - count of configured adapters + */ +static atomic_t pmcraid_adapter_count = ATOMIC_INIT(0); + +/* + * Supporting user-level control interface through IOCTL commands. + * pmcraid_major - major number to use + * pmcraid_minor - minor number(s) to use + */ +static unsigned int pmcraid_major; +static struct class *pmcraid_class; +DECLARE_BITMAP(pmcraid_minor, PMCRAID_MAX_ADAPTERS); + +/* + * Module parameters + */ +MODULE_AUTHOR("PMC Sierra Corporation, anil_ravindranath@pmc-sierra.com"); +MODULE_DESCRIPTION("PMC Sierra MaxRAID Controller Driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(PMCRAID_DRIVER_VERSION); + +module_param_named(log_level, pmcraid_log_level, uint, (S_IRUGO | S_IWUSR)); +MODULE_PARM_DESC(log_level, + "Enables firmware error code logging, default :1 high-severity" + " errors, 2: all errors including high-severity errors," + " 0: disables logging"); + +module_param_named(debug, pmcraid_debug_log, uint, (S_IRUGO | S_IWUSR)); +MODULE_PARM_DESC(debug, + "Enable driver verbose message logging. Set 1 to enable." + "(default: 0)"); + +module_param_named(disable_aen, pmcraid_disable_aen, uint, (S_IRUGO | S_IWUSR)); +MODULE_PARM_DESC(disable_aen, + "Disable driver aen notifications to apps. Set 1 to disable." + "(default: 0)"); + +/* chip specific constants for PMC MaxRAID controllers (same for + * 0x5220 and 0x8010 + */ +static struct pmcraid_chip_details pmcraid_chip_cfg[] = { + { + .ioastatus = 0x0, + .ioarrin = 0x00040, + .mailbox = 0x7FC30, + .global_intr_mask = 0x00034, + .ioa_host_intr = 0x0009C, + .ioa_host_intr_clr = 0x000A0, + .ioa_host_mask = 0x7FC28, + .ioa_host_mask_clr = 0x7FC28, + .host_ioa_intr = 0x00020, + .host_ioa_intr_clr = 0x00020, + .transop_timeout = 300 + } +}; + +/* + * PCI device ids supported by pmcraid driver + */ +static struct pci_device_id pmcraid_pci_table[] __devinitdata = { + { PCI_DEVICE(PCI_VENDOR_ID_PMC, PCI_DEVICE_ID_PMC_MAXRAID), + 0, 0, (kernel_ulong_t)&pmcraid_chip_cfg[0] + }, + {} +}; + +MODULE_DEVICE_TABLE(pci, pmcraid_pci_table); + + + +/** + * pmcraid_slave_alloc - Prepare for commands to a device + * @scsi_dev: scsi device struct + * + * This function is called by mid-layer prior to sending any command to the new + * device. Stores resource entry details of the device in scsi_device struct. + * Queuecommand uses the resource handle and other details to fill up IOARCB + * while sending commands to the device. + * + * Return value: + * 0 on success / -ENXIO if device does not exist + */ +static int pmcraid_slave_alloc(struct scsi_device *scsi_dev) +{ + struct pmcraid_resource_entry *temp, *res = NULL; + struct pmcraid_instance *pinstance; + u8 target, bus, lun; + unsigned long lock_flags; + int rc = -ENXIO; + pinstance = shost_priv(scsi_dev->host); + + /* Driver exposes VSET and GSCSI resources only; all other device types + * are not exposed. Resource list is synchronized using resource lock + * so any traversal or modifications to the list should be done inside + * this lock + */ + spin_lock_irqsave(&pinstance->resource_lock, lock_flags); + list_for_each_entry(temp, &pinstance->used_res_q, queue) { + + /* do not expose VSETs with order-ids >= 240 */ + if (RES_IS_VSET(temp->cfg_entry)) { + target = temp->cfg_entry.unique_flags1; + if (target >= PMCRAID_MAX_VSET_TARGETS) + continue; + bus = PMCRAID_VSET_BUS_ID; + lun = 0; + } else if (RES_IS_GSCSI(temp->cfg_entry)) { + target = RES_TARGET(temp->cfg_entry.resource_address); + bus = PMCRAID_PHYS_BUS_ID; + lun = RES_LUN(temp->cfg_entry.resource_address); + } else { + continue; + } + + if (bus == scsi_dev->channel && + target == scsi_dev->id && + lun == scsi_dev->lun) { + res = temp; + break; + } + } + + if (res) { + res->scsi_dev = scsi_dev; + scsi_dev->hostdata = res; + res->change_detected = 0; + atomic_set(&res->read_failures, 0); + atomic_set(&res->write_failures, 0); + rc = 0; + } + spin_unlock_irqrestore(&pinstance->resource_lock, lock_flags); + return rc; +} + +/** + * pmcraid_slave_configure - Configures a SCSI device + * @scsi_dev: scsi device struct + * + * This fucntion is executed by SCSI mid layer just after a device is first + * scanned (i.e. it has responded to an INQUIRY). For VSET resources, the + * timeout value (default 30s) will be over-written to a higher value (60s) + * and max_sectors value will be over-written to 512. It also sets queue depth + * to host->cmd_per_lun value + * + * Return value: + * 0 on success + */ +static int pmcraid_slave_configure(struct scsi_device *scsi_dev) +{ + struct pmcraid_resource_entry *res = scsi_dev->hostdata; + + if (!res) + return 0; + + /* LLD exposes VSETs and Enclosure devices only */ + if (RES_IS_GSCSI(res->cfg_entry) && + scsi_dev->type != TYPE_ENCLOSURE) + return -ENXIO; + + pmcraid_info("configuring %x:%x:%x:%x\n", + scsi_dev->host->unique_id, + scsi_dev->channel, + scsi_dev->id, + scsi_dev->lun); + + if (RES_IS_GSCSI(res->cfg_entry)) { + scsi_dev->allow_restart = 1; + } else if (RES_IS_VSET(res->cfg_entry)) { + scsi_dev->allow_restart = 1; + blk_queue_rq_timeout(scsi_dev->request_queue, + PMCRAID_VSET_IO_TIMEOUT); + blk_queue_max_sectors(scsi_dev->request_queue, + PMCRAID_VSET_MAX_SECTORS); + } + + if (scsi_dev->tagged_supported && + (RES_IS_GSCSI(res->cfg_entry) || RES_IS_VSET(res->cfg_entry))) { + scsi_activate_tcq(scsi_dev, scsi_dev->queue_depth); + scsi_adjust_queue_depth(scsi_dev, MSG_SIMPLE_TAG, + scsi_dev->host->cmd_per_lun); + } else { + scsi_adjust_queue_depth(scsi_dev, 0, + scsi_dev->host->cmd_per_lun); + } + + return 0; +} + +/** + * pmcraid_slave_destroy - Unconfigure a SCSI device before removing it + * + * @scsi_dev: scsi device struct + * + * This is called by mid-layer before removing a device. Pointer assignments + * done in pmcraid_slave_alloc will be reset to NULL here. + * + * Return value + * none + */ +static void pmcraid_slave_destroy(struct scsi_device *scsi_dev) +{ + struct pmcraid_resource_entry *res; + + res = (struct pmcraid_resource_entry *)scsi_dev->hostdata; + + if (res) + res->scsi_dev = NULL; + + scsi_dev->hostdata = NULL; +} + +/** + * pmcraid_change_queue_depth - Change the device's queue depth + * @scsi_dev: scsi device struct + * @depth: depth to set + * + * Return value + * actual depth set + */ +static int pmcraid_change_queue_depth(struct scsi_device *scsi_dev, int depth) +{ + if (depth > PMCRAID_MAX_CMD_PER_LUN) + depth = PMCRAID_MAX_CMD_PER_LUN; + + scsi_adjust_queue_depth(scsi_dev, scsi_get_tag_type(scsi_dev), depth); + + return scsi_dev->queue_depth; +} + +/** + * pmcraid_change_queue_type - Change the device's queue type + * @scsi_dev: scsi device struct + * @tag: type of tags to use + * + * Return value: + * actual queue type set + */ +static int pmcraid_change_queue_type(struct scsi_device *scsi_dev, int tag) +{ + struct pmcraid_resource_entry *res; + + res = (struct pmcraid_resource_entry *)scsi_dev->hostdata; + + if ((res) && scsi_dev->tagged_supported && + (RES_IS_GSCSI(res->cfg_entry) || RES_IS_VSET(res->cfg_entry))) { + scsi_set_tag_type(scsi_dev, tag); + + if (tag) + scsi_activate_tcq(scsi_dev, scsi_dev->queue_depth); + else + scsi_deactivate_tcq(scsi_dev, scsi_dev->queue_depth); + } else + tag = 0; + + return tag; +} + + +/** + * pmcraid_init_cmdblk - initializes a command block + * + * @cmd: pointer to struct pmcraid_cmd to be initialized + * @index: if >=0 first time initialization; otherwise reinitialization + * + * Return Value + * None + */ +void pmcraid_init_cmdblk(struct pmcraid_cmd *cmd, int index) +{ + struct pmcraid_ioarcb *ioarcb = &(cmd->ioa_cb->ioarcb); + dma_addr_t dma_addr = cmd->ioa_cb_bus_addr; + + if (index >= 0) { + /* first time initialization (called from probe) */ + u32 ioasa_offset = + offsetof(struct pmcraid_control_block, ioasa); + + cmd->index = index; + ioarcb->response_handle = cpu_to_le32(index << 2); + ioarcb->ioarcb_bus_addr = cpu_to_le64(dma_addr); + ioarcb->ioasa_bus_addr = cpu_to_le64(dma_addr + ioasa_offset); + ioarcb->ioasa_len = cpu_to_le16(sizeof(struct pmcraid_ioasa)); + } else { + /* re-initialization of various lengths, called once command is + * processed by IOA + */ + memset(&cmd->ioa_cb->ioarcb.cdb, 0, PMCRAID_MAX_CDB_LEN); + ioarcb->request_flags0 = 0; + ioarcb->request_flags1 = 0; + ioarcb->cmd_timeout = 0; + ioarcb->ioarcb_bus_addr &= (~0x1FULL); + ioarcb->ioadl_bus_addr = 0; + ioarcb->ioadl_length = 0; + ioarcb->data_transfer_length = 0; + ioarcb->add_cmd_param_length = 0; + ioarcb->add_cmd_param_offset = 0; + cmd->ioa_cb->ioasa.ioasc = 0; + cmd->ioa_cb->ioasa.residual_data_length = 0; + cmd->u.time_left = 0; + } + + cmd->cmd_done = NULL; + cmd->scsi_cmd = NULL; + cmd->release = 0; + cmd->completion_req = 0; + cmd->dma_handle = 0; + init_timer(&cmd->timer); +} + +/** + * pmcraid_reinit_cmdblk - reinitialize a command block + * + * @cmd: pointer to struct pmcraid_cmd to be reinitialized + * + * Return Value + * None + */ +static void pmcraid_reinit_cmdblk(struct pmcraid_cmd *cmd) +{ + pmcraid_init_cmdblk(cmd, -1); +} + +/** + * pmcraid_get_free_cmd - get a free cmd block from command block pool + * @pinstance: adapter instance structure + * + * Return Value: + * returns pointer to cmd block or NULL if no blocks are available + */ +static struct pmcraid_cmd *pmcraid_get_free_cmd( + struct pmcraid_instance *pinstance +) +{ + struct pmcraid_cmd *cmd = NULL; + unsigned long lock_flags; + + /* free cmd block list is protected by free_pool_lock */ + spin_lock_irqsave(&pinstance->free_pool_lock, lock_flags); + + if (!list_empty(&pinstance->free_cmd_pool)) { + cmd = list_entry(pinstance->free_cmd_pool.next, + struct pmcraid_cmd, free_list); + list_del(&cmd->free_list); + } + spin_unlock_irqrestore(&pinstance->free_pool_lock, lock_flags); + + /* Initialize the command block before giving it the caller */ + if (cmd != NULL) + pmcraid_reinit_cmdblk(cmd); + return cmd; +} + +/** + * pmcraid_return_cmd - return a completed command block back into free pool + * @cmd: pointer to the command block + * + * Return Value: + * nothing + */ +void pmcraid_return_cmd(struct pmcraid_cmd *cmd) +{ + struct pmcraid_instance *pinstance = cmd->drv_inst; + unsigned long lock_flags; + + spin_lock_irqsave(&pinstance->free_pool_lock, lock_flags); + list_add_tail(&cmd->free_list, &pinstance->free_cmd_pool); + spin_unlock_irqrestore(&pinstance->free_pool_lock, lock_flags); +} + +/** + * pmcraid_read_interrupts - reads IOA interrupts + * + * @pinstance: pointer to adapter instance structure + * + * Return value + * interrupts read from IOA + */ +static u32 pmcraid_read_interrupts(struct pmcraid_instance *pinstance) +{ + return ioread32(pinstance->int_regs.ioa_host_interrupt_reg); +} + +/** + * pmcraid_disable_interrupts - Masks and clears all specified interrupts + * + * @pinstance: pointer to per adapter instance structure + * @intrs: interrupts to disable + * + * Return Value + * None + */ +static void pmcraid_disable_interrupts( + struct pmcraid_instance *pinstance, + u32 intrs +) +{ + u32 gmask = ioread32(pinstance->int_regs.global_interrupt_mask_reg); + u32 nmask = gmask | GLOBAL_INTERRUPT_MASK; + + iowrite32(nmask, pinstance->int_regs.global_interrupt_mask_reg); + iowrite32(intrs, pinstance->int_regs.ioa_host_interrupt_clr_reg); + iowrite32(intrs, pinstance->int_regs.ioa_host_interrupt_mask_reg); + ioread32(pinstance->int_regs.ioa_host_interrupt_mask_reg); +} + +/** + * pmcraid_enable_interrupts - Enables specified interrupts + * + * @pinstance: pointer to per adapter instance structure + * @intr: interrupts to enable + * + * Return Value + * None + */ +static void pmcraid_enable_interrupts( + struct pmcraid_instance *pinstance, + u32 intrs +) +{ + u32 gmask = ioread32(pinstance->int_regs.global_interrupt_mask_reg); + u32 nmask = gmask & (~GLOBAL_INTERRUPT_MASK); + + iowrite32(nmask, pinstance->int_regs.global_interrupt_mask_reg); + iowrite32(~intrs, pinstance->int_regs.ioa_host_interrupt_mask_reg); + ioread32(pinstance->int_regs.ioa_host_interrupt_mask_reg); + + pmcraid_info("enabled interrupts global mask = %x intr_mask = %x\n", + ioread32(pinstance->int_regs.global_interrupt_mask_reg), + ioread32(pinstance->int_regs.ioa_host_interrupt_mask_reg)); +} + +/** + * pmcraid_reset_type - Determine the required reset type + * @pinstance: pointer to adapter instance structure + * + * IOA requires hard reset if any of the following conditions is true. + * 1. If HRRQ valid interrupt is not masked + * 2. IOA reset alert doorbell is set + * 3. If there are any error interrupts + */ +static void pmcraid_reset_type(struct pmcraid_instance *pinstance) +{ + u32 mask; + u32 intrs; + u32 alerts; + + mask = ioread32(pinstance->int_regs.ioa_host_interrupt_mask_reg); + intrs = ioread32(pinstance->int_regs.ioa_host_interrupt_reg); + alerts = ioread32(pinstance->int_regs.host_ioa_interrupt_reg); + + if ((mask & INTRS_HRRQ_VALID) == 0 || + (alerts & DOORBELL_IOA_RESET_ALERT) || + (intrs & PMCRAID_ERROR_INTERRUPTS)) { + pmcraid_info("IOA requires hard reset\n"); + pinstance->ioa_hard_reset = 1; + } + + /* If unit check is active, trigger the dump */ + if (intrs & INTRS_IOA_UNIT_CHECK) + pinstance->ioa_unit_check = 1; +} + +/** + * pmcraid_bist_done - completion function for PCI BIST + * @cmd: pointer to reset command + * Return Value + * none + */ + +static void pmcraid_ioa_reset(struct pmcraid_cmd *); + +static void pmcraid_bist_done(struct pmcraid_cmd *cmd) +{ + struct pmcraid_instance *pinstance = cmd->drv_inst; + unsigned long lock_flags; + int rc; + u16 pci_reg; + + rc = pci_read_config_word(pinstance->pdev, PCI_COMMAND, &pci_reg); + + /* If PCI config space can't be accessed wait for another two secs */ + if ((rc != PCIBIOS_SUCCESSFUL || (!(pci_reg & PCI_COMMAND_MEMORY))) && + cmd->u.time_left > 0) { + pmcraid_info("BIST not complete, waiting another 2 secs\n"); + cmd->timer.expires = jiffies + cmd->u.time_left; + cmd->u.time_left = 0; + cmd->timer.data = (unsigned long)cmd; + cmd->timer.function = + (void (*)(unsigned long))pmcraid_bist_done; + add_timer(&cmd->timer); + } else { + cmd->u.time_left = 0; + pmcraid_info("BIST is complete, proceeding with reset\n"); + spin_lock_irqsave(pinstance->host->host_lock, lock_flags); + pmcraid_ioa_reset(cmd); + spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags); + } +} + +/** + * pmcraid_start_bist - starts BIST + * @cmd: pointer to reset cmd + * Return Value + * none + */ +static void pmcraid_start_bist(struct pmcraid_cmd *cmd) +{ + struct pmcraid_instance *pinstance = cmd->drv_inst; + u32 doorbells, intrs; + + /* proceed with bist and wait for 2 seconds */ + iowrite32(DOORBELL_IOA_START_BIST, + pinstance->int_regs.host_ioa_interrupt_reg); + doorbells = ioread32(pinstance->int_regs.host_ioa_interrupt_reg); + intrs = ioread32(pinstance->int_regs.ioa_host_interrupt_reg); + pmcraid_info("doorbells after start bist: %x intrs: %x \n", + doorbells, intrs); + + cmd->u.time_left = msecs_to_jiffies(PMCRAID_BIST_TIMEOUT); + cmd->timer.data = (unsigned long)cmd; + cmd->timer.expires = jiffies + msecs_to_jiffies(PMCRAID_BIST_TIMEOUT); + cmd->timer.function = (void (*)(unsigned long))pmcraid_bist_done; + add_timer(&cmd->timer); +} + +/** + * pmcraid_reset_alert_done - completion routine for reset_alert + * @cmd: pointer to command block used in reset sequence + * Return value + * None + */ +static void pmcraid_reset_alert_done(struct pmcraid_cmd *cmd) +{ + struct pmcraid_instance *pinstance = cmd->drv_inst; + u32 status = ioread32(pinstance->ioa_status); + unsigned long lock_flags; + + /* if the critical operation in progress bit is set or the wait times + * out, invoke reset engine to proceed with hard reset. If there is + * some more time to wait, restart the timer + */ + if (((status & INTRS_CRITICAL_OP_IN_PROGRESS) == 0) || + cmd->u.time_left <= 0) { + pmcraid_info("critical op is reset proceeding with reset\n"); + spin_lock_irqsave(pinstance->host->host_lock, lock_flags); + pmcraid_ioa_reset(cmd); + spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags); + } else { + pmcraid_info("critical op is not yet reset waiting again\n"); + /* restart timer if some more time is available to wait */ + cmd->u.time_left -= PMCRAID_CHECK_FOR_RESET_TIMEOUT; + cmd->timer.data = (unsigned long)cmd; + cmd->timer.expires = jiffies + PMCRAID_CHECK_FOR_RESET_TIMEOUT; + cmd->timer.function = + (void (*)(unsigned long))pmcraid_reset_alert_done; + add_timer(&cmd->timer); + } +} + +/** + * pmcraid_reset_alert - alerts IOA for a possible reset + * @cmd : command block to be used for reset sequence. + * + * Return Value + * returns 0 if pci config-space is accessible and RESET_DOORBELL is + * successfully written to IOA. Returns non-zero in case pci_config_space + * is not accessible + */ +static void pmcraid_reset_alert(struct pmcraid_cmd *cmd) +{ + struct pmcraid_instance *pinstance = cmd->drv_inst; + u32 doorbells; + int rc; + u16 pci_reg; + + /* If we are able to access IOA PCI config space, alert IOA that we are + * going to reset it soon. This enables IOA to preserv persistent error + * data if any. In case memory space is not accessible, proceed with + * BIST or slot_reset + */ + rc = pci_read_config_word(pinstance->pdev, PCI_COMMAND, &pci_reg); + if ((rc == PCIBIOS_SUCCESSFUL) && (pci_reg & PCI_COMMAND_MEMORY)) { + + /* wait for IOA permission i.e until CRITICAL_OPERATION bit is + * reset IOA doesn't generate any interrupts when CRITICAL + * OPERATION bit is reset. A timer is started to wait for this + * bit to be reset. + */ + cmd->u.time_left = PMCRAID_RESET_TIMEOUT; + cmd->timer.data = (unsigned long)cmd; + cmd->timer.expires = jiffies + PMCRAID_CHECK_FOR_RESET_TIMEOUT; + cmd->timer.function = + (void (*)(unsigned long))pmcraid_reset_alert_done; + add_timer(&cmd->timer); + + iowrite32(DOORBELL_IOA_RESET_ALERT, + pinstance->int_regs.host_ioa_interrupt_reg); + doorbells = + ioread32(pinstance->int_regs.host_ioa_interrupt_reg); + pmcraid_info("doorbells after reset alert: %x\n", doorbells); + } else { + pmcraid_info("PCI config is not accessible starting BIST\n"); + pinstance->ioa_state = IOA_STATE_IN_HARD_RESET; + pmcraid_start_bist(cmd); + } +} + +/** + * pmcraid_timeout_handler - Timeout handler for internally generated ops + * + * @cmd : pointer to command structure, that got timedout + * + * This function blocks host requests and initiates an adapter reset. + * + * Return value: + * None + */ +static void pmcraid_timeout_handler(struct pmcraid_cmd *cmd) +{ + struct pmcraid_instance *pinstance = cmd->drv_inst; + unsigned long lock_flags; + + dev_err(&pinstance->pdev->dev, + "Adapter being reset due to command timeout.\n"); + + /* Command timeouts result in hard reset sequence. The command that got + * timed out may be the one used as part of reset sequence. In this + * case restart reset sequence using the same command block even if + * reset is in progress. Otherwise fail this command and get a free + * command block to restart the reset sequence. + */ + spin_lock_irqsave(pinstance->host->host_lock, lock_flags); + if (!pinstance->ioa_reset_in_progress) { + pinstance->ioa_reset_attempts = 0; + cmd = pmcraid_get_free_cmd(pinstance); + + /* If we are out of command blocks, just return here itself. + * Some other command's timeout handler can do the reset job + */ + if (cmd == NULL) { + spin_unlock_irqrestore(pinstance->host->host_lock, + lock_flags); + pmcraid_err("no free cmnd block for timeout handler\n"); + return; + } + + pinstance->reset_cmd = cmd; + pinstance->ioa_reset_in_progress = 1; + } else { + pmcraid_info("reset is already in progress\n"); + + if (pinstance->reset_cmd != cmd) { + /* This command should have been given to IOA, this + * command will be completed by fail_outstanding_cmds + * anyway + */ + pmcraid_err("cmd is pending but reset in progress\n"); + } + + /* If this command was being used as part of the reset + * sequence, set cmd_done pointer to pmcraid_ioa_reset. This + * causes fail_outstanding_commands not to return the command + * block back to free pool + */ + if (cmd == pinstance->reset_cmd) + cmd->cmd_done = pmcraid_ioa_reset; + + } + + pinstance->ioa_state = IOA_STATE_IN_RESET_ALERT; + scsi_block_requests(pinstance->host); + pmcraid_reset_alert(cmd); + spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags); +} + +/** + * pmcraid_internal_done - completion routine for internally generated cmds + * + * @cmd: command that got response from IOA + * + * Return Value: + * none + */ +static void pmcraid_internal_done(struct pmcraid_cmd *cmd) +{ + pmcraid_info("response internal cmd CDB[0] = %x ioasc = %x\n", + cmd->ioa_cb->ioarcb.cdb[0], + le32_to_cpu(cmd->ioa_cb->ioasa.ioasc)); + + /* Some of the internal commands are sent with callers blocking for the + * response. Same will be indicated as part of cmd->completion_req + * field. Response path needs to wake up any waiters waiting for cmd + * completion if this flag is set. + */ + if (cmd->completion_req) { + cmd->completion_req = 0; + complete(&cmd->wait_for_completion); + } + + /* most of the internal commands are completed by caller itself, so + * no need to return the command block back to free pool until we are + * required to do so (e.g once done with initialization). + */ + if (cmd->release) { + cmd->release = 0; + pmcraid_return_cmd(cmd); + } +} + +/** + * pmcraid_reinit_cfgtable_done - done function for cfg table reinitialization + * + * @cmd: command that got response from IOA + * + * This routine is called after driver re-reads configuration table due to a + * lost CCN. It returns the command block back to free pool and schedules + * worker thread to add/delete devices into the system. + * + * Return Value: + * none + */ +static void pmcraid_reinit_cfgtable_done(struct pmcraid_cmd *cmd) +{ + pmcraid_info("response internal cmd CDB[0] = %x ioasc = %x\n", + cmd->ioa_cb->ioarcb.cdb[0], + le32_to_cpu(cmd->ioa_cb->ioasa.ioasc)); + + if (cmd->release) { + cmd->release = 0; + pmcraid_return_cmd(cmd); + } + pmcraid_info("scheduling worker for config table reinitialization\n"); + schedule_work(&cmd->drv_inst->worker_q); +} + +/** + * pmcraid_erp_done - Process completion of SCSI error response from device + * @cmd: pmcraid_command + * + * This function copies the sense buffer into the scsi_cmd struct and completes + * scsi_cmd by calling scsi_done function. + * + * Return value: + * none + */ +static void pmcraid_erp_done(struct pmcraid_cmd *cmd) +{ + struct scsi_cmnd *scsi_cmd = cmd->scsi_cmd; + struct pmcraid_instance *pinstance = cmd->drv_inst; + u32 ioasc = le32_to_cpu(cmd->ioa_cb->ioasa.ioasc); + + if (PMCRAID_IOASC_SENSE_KEY(ioasc) > 0) { + scsi_cmd->result |= (DID_ERROR << 16); + pmcraid_err("command CDB[0] = %x failed with IOASC: 0x%08X\n", + cmd->ioa_cb->ioarcb.cdb[0], ioasc); + } + + /* if we had allocated sense buffers for request sense, copy the sense + * release the buffers + */ + if (cmd->sense_buffer != NULL) { + memcpy(scsi_cmd->sense_buffer, + cmd->sense_buffer, + SCSI_SENSE_BUFFERSIZE); + pci_free_consistent(pinstance->pdev, + SCSI_SENSE_BUFFERSIZE, + cmd->sense_buffer, cmd->sense_buffer_dma); + cmd->sense_buffer = NULL; + cmd->sense_buffer_dma = 0; + } + + scsi_dma_unmap(scsi_cmd); + pmcraid_return_cmd(cmd); + scsi_cmd->scsi_done(scsi_cmd); +} + +/** + * pmcraid_fire_command - sends an IOA command to adapter + * + * This function adds the given block into pending command list + * and returns without waiting + * + * @cmd : command to be sent to the device + * + * Return Value + * None + */ +static void _pmcraid_fire_command(struct pmcraid_cmd *cmd) +{ + struct pmcraid_instance *pinstance = cmd->drv_inst; + unsigned long lock_flags; + + /* Add this command block to pending cmd pool. We do this prior to + * writting IOARCB to ioarrin because IOA might complete the command + * by the time we are about to add it to the list. Response handler + * (isr/tasklet) looks for cmb block in the pending pending list. + */ + spin_lock_irqsave(&pinstance->pending_pool_lock, lock_flags); + list_add_tail(&cmd->free_list, &pinstance->pending_cmd_pool); + spin_unlock_irqrestore(&pinstance->pending_pool_lock, lock_flags); + atomic_inc(&pinstance->outstanding_cmds); + + /* driver writes lower 32-bit value of IOARCB address only */ + mb(); + iowrite32(le32_to_cpu(cmd->ioa_cb->ioarcb.ioarcb_bus_addr), + pinstance->ioarrin); +} + +/** + * pmcraid_send_cmd - fires a command to IOA + * + * This function also sets up timeout function, and command completion + * function + * + * @cmd: pointer to the command block to be fired to IOA + * @cmd_done: command completion function, called once IOA responds + * @timeout: timeout to wait for this command completion + * @timeout_func: timeout handler + * + * Return value + * none + */ +static void pmcraid_send_cmd( + struct pmcraid_cmd *cmd, + void (*cmd_done) (struct pmcraid_cmd *), + unsigned long timeout, + void (*timeout_func) (struct pmcraid_cmd *) +) +{ + /* initialize done function */ + cmd->cmd_done = cmd_done; + + if (timeout_func) { + /* setup timeout handler */ + cmd->timer.data = (unsigned long)cmd; + cmd->timer.expires = jiffies + timeout; + cmd->timer.function = (void (*)(unsigned long))timeout_func; + add_timer(&cmd->timer); + } + + /* fire the command to IOA */ + _pmcraid_fire_command(cmd); +} + +/** + * pmcraid_ioa_shutdown - sends SHUTDOWN command to ioa + * + * @cmd: pointer to the command block used as part of reset sequence + * + * Return Value + * None + */ +static void pmcraid_ioa_shutdown(struct pmcraid_cmd *cmd) +{ + pmcraid_info("response for Cancel CCN CDB[0] = %x ioasc = %x\n", + cmd->ioa_cb->ioarcb.cdb[0], + le32_to_cpu(cmd->ioa_cb->ioasa.ioasc)); + + /* Note that commands sent during reset require next command to be sent + * to IOA. Hence reinit the done function as well as timeout function + */ + pmcraid_reinit_cmdblk(cmd); + cmd->ioa_cb->ioarcb.request_type = REQ_TYPE_IOACMD; + cmd->ioa_cb->ioarcb.resource_handle = + cpu_to_le32(PMCRAID_IOA_RES_HANDLE); + cmd->ioa_cb->ioarcb.cdb[0] = PMCRAID_IOA_SHUTDOWN; + cmd->ioa_cb->ioarcb.cdb[1] = PMCRAID_SHUTDOWN_NORMAL; + + /* fire shutdown command to hardware. */ + pmcraid_info("firing normal shutdown command (%d) to IOA\n", + le32_to_cpu(cmd->ioa_cb->ioarcb.response_handle)); + + pmcraid_send_cmd(cmd, pmcraid_ioa_reset, + PMCRAID_SHUTDOWN_TIMEOUT, + pmcraid_timeout_handler); +} + +/** + * pmcraid_identify_hrrq - registers host rrq buffers with IOA + * @cmd: pointer to command block to be used for identify hrrq + * + * Return Value + * 0 in case of success, otherwise non-zero failure code + */ + +static void pmcraid_querycfg(struct pmcraid_cmd *); + +static void pmcraid_identify_hrrq(struct pmcraid_cmd *cmd) +{ + struct pmcraid_instance *pinstance = cmd->drv_inst; + struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb; + int index = 0; + __be64 hrrq_addr = cpu_to_be64(pinstance->hrrq_start_bus_addr[index]); + u32 hrrq_size = cpu_to_be32(sizeof(u32) * PMCRAID_MAX_CMD); + + pmcraid_reinit_cmdblk(cmd); + + /* Initialize ioarcb */ + ioarcb->request_type = REQ_TYPE_IOACMD; + ioarcb->resource_handle = cpu_to_le32(PMCRAID_IOA_RES_HANDLE); + + /* initialize the hrrq number where IOA will respond to this command */ + ioarcb->hrrq_id = index; + ioarcb->cdb[0] = PMCRAID_IDENTIFY_HRRQ; + ioarcb->cdb[1] = index; + + /* IOA expects 64-bit pci address to be written in B.E format + * (i.e cdb[2]=MSByte..cdb[9]=LSB. + */ + pmcraid_info("HRRQ_IDENTIFY with hrrq:ioarcb => %llx:%llx\n", + hrrq_addr, ioarcb->ioarcb_bus_addr); + + memcpy(&(ioarcb->cdb[2]), &hrrq_addr, sizeof(hrrq_addr)); + memcpy(&(ioarcb->cdb[10]), &hrrq_size, sizeof(hrrq_size)); + + /* Subsequent commands require HRRQ identification to be successful. + * Note that this gets called even during reset from SCSI mid-layer + * or tasklet + */ + pmcraid_send_cmd(cmd, pmcraid_querycfg, + PMCRAID_INTERNAL_TIMEOUT, + pmcraid_timeout_handler); +} + +static void pmcraid_process_ccn(struct pmcraid_cmd *cmd); +static void pmcraid_process_ldn(struct pmcraid_cmd *cmd); + +/** + * pmcraid_send_hcam_cmd - send an initialized command block(HCAM) to IOA + * + * @cmd: initialized command block pointer + * + * Return Value + * none + */ +static void pmcraid_send_hcam_cmd(struct pmcraid_cmd *cmd) +{ + if (cmd->ioa_cb->ioarcb.cdb[1] == PMCRAID_HCAM_CODE_CONFIG_CHANGE) + atomic_set(&(cmd->drv_inst->ccn.ignore), 0); + else + atomic_set(&(cmd->drv_inst->ldn.ignore), 0); + + pmcraid_send_cmd(cmd, cmd->cmd_done, 0, NULL); +} + +/** + * pmcraid_init_hcam - send an initialized command block(HCAM) to IOA + * + * @pinstance: pointer to adapter instance structure + * @type: HCAM type + * + * Return Value + * pointer to initialized pmcraid_cmd structure or NULL + */ +static struct pmcraid_cmd *pmcraid_init_hcam +( + struct pmcraid_instance *pinstance, + u8 type +) +{ + struct pmcraid_cmd *cmd; + struct pmcraid_ioarcb *ioarcb; + struct pmcraid_ioadl_desc *ioadl; + struct pmcraid_hostrcb *hcam; + void (*cmd_done) (struct pmcraid_cmd *); + dma_addr_t dma; + int rcb_size; + + cmd = pmcraid_get_free_cmd(pinstance); + + if (!cmd) { + pmcraid_err("no free command blocks for hcam\n"); + return cmd; + } + + if (type == PMCRAID_HCAM_CODE_CONFIG_CHANGE) { + rcb_size = sizeof(struct pmcraid_hcam_ccn); + cmd_done = pmcraid_process_ccn; + dma = pinstance->ccn.baddr + PMCRAID_AEN_HDR_SIZE; + hcam = &pinstance->ccn; + } else { + rcb_size = sizeof(struct pmcraid_hcam_ldn); + cmd_done = pmcraid_process_ldn; + dma = pinstance->ldn.baddr + PMCRAID_AEN_HDR_SIZE; + hcam = &pinstance->ldn; + } + + /* initialize command pointer used for HCAM registration */ + hcam->cmd = cmd; + + ioarcb = &cmd->ioa_cb->ioarcb; + ioarcb->ioadl_bus_addr = cpu_to_le64((cmd->ioa_cb_bus_addr) + + offsetof(struct pmcraid_ioarcb, + add_data.u.ioadl[0])); + ioarcb->ioadl_length = cpu_to_le32(sizeof(struct pmcraid_ioadl_desc)); + ioadl = ioarcb->add_data.u.ioadl; + + /* Initialize ioarcb */ + ioarcb->request_type = REQ_TYPE_HCAM; + ioarcb->resource_handle = cpu_to_le32(PMCRAID_IOA_RES_HANDLE); + ioarcb->cdb[0] = PMCRAID_HOST_CONTROLLED_ASYNC; + ioarcb->cdb[1] = type; + ioarcb->cdb[7] = (rcb_size >> 8) & 0xFF; + ioarcb->cdb[8] = (rcb_size) & 0xFF; + + ioarcb->data_transfer_length = cpu_to_le32(rcb_size); + + ioadl[0].flags |= cpu_to_le32(IOADL_FLAGS_READ_LAST); + ioadl[0].data_len = cpu_to_le32(rcb_size); + ioadl[0].address = cpu_to_le32(dma); + + cmd->cmd_done = cmd_done; + return cmd; +} + +/** + * pmcraid_send_hcam - Send an HCAM to IOA + * @pinstance: ioa config struct + * @type: HCAM type + * + * This function will send a Host Controlled Async command to IOA. + * + * Return value: + * none + */ +static void pmcraid_send_hcam(struct pmcraid_instance *pinstance, u8 type) +{ + struct pmcraid_cmd *cmd = pmcraid_init_hcam(pinstance, type); + pmcraid_send_hcam_cmd(cmd); +} + + +/** + * pmcraid_prepare_cancel_cmd - prepares a command block to abort another + * + * @cmd: pointer to cmd that is used as cancelling command + * @cmd_to_cancel: pointer to the command that needs to be cancelled + */ +static void pmcraid_prepare_cancel_cmd( + struct pmcraid_cmd *cmd, + struct pmcraid_cmd *cmd_to_cancel +) +{ + struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb; + __be64 ioarcb_addr = cmd_to_cancel->ioa_cb->ioarcb.ioarcb_bus_addr; + + /* Get the resource handle to where the command to be aborted has been + * sent. + */ + ioarcb->resource_handle = cmd_to_cancel->ioa_cb->ioarcb.resource_handle; + ioarcb->request_type = REQ_TYPE_IOACMD; + memset(ioarcb->cdb, 0, PMCRAID_MAX_CDB_LEN); + ioarcb->cdb[0] = PMCRAID_ABORT_CMD; + + /* IOARCB address of the command to be cancelled is given in + * cdb[2]..cdb[9] is Big-Endian format. Note that length bits in + * IOARCB address are not masked. + */ + ioarcb_addr = cpu_to_be64(ioarcb_addr); + memcpy(&(ioarcb->cdb[2]), &ioarcb_addr, sizeof(ioarcb_addr)); +} + +/** + * pmcraid_cancel_hcam - sends ABORT task to abort a given HCAM + * + * @cmd: command to be used as cancelling command + * @type: HCAM type + * @cmd_done: op done function for the cancelling command + */ +static void pmcraid_cancel_hcam( + struct pmcraid_cmd *cmd, + u8 type, + void (*cmd_done) (struct pmcraid_cmd *) +) +{ + struct pmcraid_instance *pinstance; + struct pmcraid_hostrcb *hcam; + + pinstance = cmd->drv_inst; + hcam = (type == PMCRAID_HCAM_CODE_LOG_DATA) ? + &pinstance->ldn : &pinstance->ccn; + + /* prepare for cancelling previous hcam command. If the HCAM is + * currently not pending with IOA, we would have hcam->cmd as non-null + */ + if (hcam->cmd == NULL) + return; + + pmcraid_prepare_cancel_cmd(cmd, hcam->cmd); + + /* writing to IOARRIN must be protected by host_lock, as mid-layer + * schedule queuecommand while we are doing this + */ + pmcraid_send_cmd(cmd, cmd_done, + PMCRAID_INTERNAL_TIMEOUT, + pmcraid_timeout_handler); +} + +/** + * pmcraid_cancel_ccn - cancel CCN HCAM already registered with IOA + * + * @cmd: command block to be used for cancelling the HCAM + */ +static void pmcraid_cancel_ccn(struct pmcraid_cmd *cmd) +{ + pmcraid_info("response for Cancel LDN CDB[0] = %x ioasc = %x\n", + cmd->ioa_cb->ioarcb.cdb[0], + le32_to_cpu(cmd->ioa_cb->ioasa.ioasc)); + + pmcraid_reinit_cmdblk(cmd); + + pmcraid_cancel_hcam(cmd, + PMCRAID_HCAM_CODE_CONFIG_CHANGE, + pmcraid_ioa_shutdown); +} + +/** + * pmcraid_cancel_ldn - cancel LDN HCAM already registered with IOA + * + * @cmd: command block to be used for cancelling the HCAM + */ +static void pmcraid_cancel_ldn(struct pmcraid_cmd *cmd) +{ + pmcraid_cancel_hcam(cmd, + PMCRAID_HCAM_CODE_LOG_DATA, + pmcraid_cancel_ccn); +} + +/** + * pmcraid_expose_resource - check if the resource can be exposed to OS + * + * @cfgte: pointer to configuration table entry of the resource + * + * Return value: + * true if resource can be added to midlayer, false(0) otherwise + */ +static int pmcraid_expose_resource(struct pmcraid_config_table_entry *cfgte) +{ + int retval = 0; + + if (cfgte->resource_type == RES_TYPE_VSET) + retval = ((cfgte->unique_flags1 & 0xFF) < 0xFE); + else if (cfgte->resource_type == RES_TYPE_GSCSI) + retval = (RES_BUS(cfgte->resource_address) != + PMCRAID_VIRTUAL_ENCL_BUS_ID); + return retval; +} + +/* attributes supported by pmcraid_event_family */ +enum { + PMCRAID_AEN_ATTR_UNSPEC, + PMCRAID_AEN_ATTR_EVENT, + __PMCRAID_AEN_ATTR_MAX, +}; +#define PMCRAID_AEN_ATTR_MAX (__PMCRAID_AEN_ATTR_MAX - 1) + +/* commands supported by pmcraid_event_family */ +enum { + PMCRAID_AEN_CMD_UNSPEC, + PMCRAID_AEN_CMD_EVENT, + __PMCRAID_AEN_CMD_MAX, +}; +#define PMCRAID_AEN_CMD_MAX (__PMCRAID_AEN_CMD_MAX - 1) + +static struct genl_family pmcraid_event_family = { + .id = GENL_ID_GENERATE, + .name = "pmcraid", + .version = 1, + .maxattr = PMCRAID_AEN_ATTR_MAX +}; + +/** + * pmcraid_netlink_init - registers pmcraid_event_family + * + * Return value: + * 0 if the pmcraid_event_family is successfully registered + * with netlink generic, non-zero otherwise + */ +static int pmcraid_netlink_init(void) +{ + int result; + + result = genl_register_family(&pmcraid_event_family); + + if (result) + return result; + + pmcraid_info("registered NETLINK GENERIC group: %d\n", + pmcraid_event_family.id); + + return result; +} + +/** + * pmcraid_netlink_release - unregisters pmcraid_event_family + * + * Return value: + * none + */ +static void pmcraid_netlink_release(void) +{ + genl_unregister_family(&pmcraid_event_family); +} + +/** + * pmcraid_notify_aen - sends event msg to user space application + * @pinstance: pointer to adapter instance structure + * @type: HCAM type + * + * Return value: + * 0 if success, error value in case of any failure. + */ +static int pmcraid_notify_aen(struct pmcraid_instance *pinstance, u8 type) +{ + struct sk_buff *skb; + struct pmcraid_aen_msg *aen_msg; + void *msg_header; + int data_size, total_size; + int result; + + + if (type == PMCRAID_HCAM_CODE_LOG_DATA) { + aen_msg = pinstance->ldn.msg; + data_size = pinstance->ldn.hcam->data_len; + } else { + aen_msg = pinstance->ccn.msg; + data_size = pinstance->ccn.hcam->data_len; + } + + data_size += sizeof(struct pmcraid_hcam_hdr); + aen_msg->hostno = (pinstance->host->unique_id << 16 | + MINOR(pinstance->cdev.dev)); + aen_msg->length = data_size; + data_size += sizeof(*aen_msg); + + total_size = nla_total_size(data_size); + skb = genlmsg_new(total_size, GFP_ATOMIC); + + + if (!skb) { + pmcraid_err("Failed to allocate aen data SKB of size: %x\n", + total_size); + return -ENOMEM; + } + + /* add the genetlink message header */ + msg_header = genlmsg_put(skb, 0, 0, + &pmcraid_event_family, 0, + PMCRAID_AEN_CMD_EVENT); + if (!msg_header) { + pmcraid_err("failed to copy command details\n"); + nlmsg_free(skb); + return -ENOMEM; + } + + result = nla_put(skb, PMCRAID_AEN_ATTR_EVENT, data_size, aen_msg); + + if (result) { + pmcraid_err("failed to copy AEN attribute data \n"); + nlmsg_free(skb); + return -EINVAL; + } + + /* send genetlink multicast message to notify appplications */ + result = genlmsg_end(skb, msg_header); + + if (result < 0) { + pmcraid_err("genlmsg_end failed\n"); + nlmsg_free(skb); + return result; + } + + result = + genlmsg_multicast(skb, 0, pmcraid_event_family.id, GFP_ATOMIC); + + /* If there are no listeners, genlmsg_multicast may return non-zero + * value. + */ + if (result) + pmcraid_info("failed to send %s event message %x!\n", + type == PMCRAID_HCAM_CODE_LOG_DATA ? "LDN" : "CCN", + result); + return result; +} + +/** + * pmcraid_handle_config_change - Handle a config change from the adapter + * @pinstance: pointer to per adapter instance structure + * + * Return value: + * none + */ +static void pmcraid_handle_config_change(struct pmcraid_instance *pinstance) +{ + struct pmcraid_config_table_entry *cfg_entry; + struct pmcraid_hcam_ccn *ccn_hcam; + struct pmcraid_cmd *cmd; + struct pmcraid_cmd *cfgcmd; + struct pmcraid_resource_entry *res = NULL; + u32 new_entry = 1; + unsigned long lock_flags; + unsigned long host_lock_flags; + int rc; + + ccn_hcam = (struct pmcraid_hcam_ccn *)pinstance->ccn.hcam; + cfg_entry = &ccn_hcam->cfg_entry; + + pmcraid_info + ("CCN(%x): %x type: %x lost: %x flags: %x res: %x:%x:%x:%x\n", + pinstance->ccn.hcam->ilid, + pinstance->ccn.hcam->op_code, + pinstance->ccn.hcam->notification_type, + pinstance->ccn.hcam->notification_lost, + pinstance->ccn.hcam->flags, + pinstance->host->unique_id, + RES_IS_VSET(*cfg_entry) ? PMCRAID_VSET_BUS_ID : + (RES_IS_GSCSI(*cfg_entry) ? PMCRAID_PHYS_BUS_ID : + RES_BUS(cfg_entry->resource_address)), + RES_IS_VSET(*cfg_entry) ? cfg_entry->unique_flags1 : + RES_TARGET(cfg_entry->resource_address), + RES_LUN(cfg_entry->resource_address)); + + + /* If this HCAM indicates a lost notification, read the config table */ + if (pinstance->ccn.hcam->notification_lost) { + cfgcmd = pmcraid_get_free_cmd(pinstance); + if (cfgcmd) { + pmcraid_info("lost CCN, reading config table\b"); + pinstance->reinit_cfg_table = 1; + pmcraid_querycfg(cfgcmd); + } else { + pmcraid_err("lost CCN, no free cmd for querycfg\n"); + } + goto out_notify_apps; + } + + /* If this resource is not going to be added to mid-layer, just notify + * applications and return + */ + if (!pmcraid_expose_resource(cfg_entry)) + goto out_notify_apps; + + spin_lock_irqsave(&pinstance->resource_lock, lock_flags); + list_for_each_entry(res, &pinstance->used_res_q, queue) { + rc = memcmp(&res->cfg_entry.resource_address, + &cfg_entry->resource_address, + sizeof(cfg_entry->resource_address)); + if (!rc) { + new_entry = 0; + break; + } + } + + if (new_entry) { + + /* If there are more number of resources than what driver can + * manage, do not notify the applications about the CCN. Just + * ignore this notifications and re-register the same HCAM + */ + if (list_empty(&pinstance->free_res_q)) { + spin_unlock_irqrestore(&pinstance->resource_lock, + lock_flags); + pmcraid_err("too many resources attached\n"); + spin_lock_irqsave(pinstance->host->host_lock, + host_lock_flags); + pmcraid_send_hcam(pinstance, + PMCRAID_HCAM_CODE_CONFIG_CHANGE); + spin_unlock_irqrestore(pinstance->host->host_lock, + host_lock_flags); + return; + } + + res = list_entry(pinstance->free_res_q.next, + struct pmcraid_resource_entry, queue); + + list_del(&res->queue); + res->scsi_dev = NULL; + res->reset_progress = 0; + list_add_tail(&res->queue, &pinstance->used_res_q); + } + + memcpy(&res->cfg_entry, cfg_entry, + sizeof(struct pmcraid_config_table_entry)); + + if (pinstance->ccn.hcam->notification_type == + NOTIFICATION_TYPE_ENTRY_DELETED) { + if (res->scsi_dev) { + res->change_detected = RES_CHANGE_DEL; + res->cfg_entry.resource_handle = + PMCRAID_INVALID_RES_HANDLE; + schedule_work(&pinstance->worker_q); + } else { + /* This may be one of the non-exposed resources */ + list_move_tail(&res->queue, &pinstance->free_res_q); + } + } else if (!res->scsi_dev) { + res->change_detected = RES_CHANGE_ADD; + schedule_work(&pinstance->worker_q); + } + spin_unlock_irqrestore(&pinstance->resource_lock, lock_flags); + +out_notify_apps: + + /* Notify configuration changes to registered applications.*/ + if (!pmcraid_disable_aen) + pmcraid_notify_aen(pinstance, PMCRAID_HCAM_CODE_CONFIG_CHANGE); + + cmd = pmcraid_init_hcam(pinstance, PMCRAID_HCAM_CODE_CONFIG_CHANGE); + if (cmd) + pmcraid_send_hcam_cmd(cmd); +} + +/** + * pmcraid_get_error_info - return error string for an ioasc + * @ioasc: ioasc code + * Return Value + * none + */ +static struct pmcraid_ioasc_error *pmcraid_get_error_info(u32 ioasc) +{ + int i; + for (i = 0; i < ARRAY_SIZE(pmcraid_ioasc_error_table); i++) { + if (pmcraid_ioasc_error_table[i].ioasc_code == ioasc) + return &pmcraid_ioasc_error_table[i]; + } + return NULL; +} + +/** + * pmcraid_ioasc_logger - log IOASC information based user-settings + * @ioasc: ioasc code + * @cmd: pointer to command that resulted in 'ioasc' + */ +void pmcraid_ioasc_logger(u32 ioasc, struct pmcraid_cmd *cmd) +{ + struct pmcraid_ioasc_error *error_info = pmcraid_get_error_info(ioasc); + + if (error_info == NULL || + cmd->drv_inst->current_log_level < error_info->log_level) + return; + + /* log the error string */ + pmcraid_err("cmd [%d] for resource %x failed with %x(%s)\n", + cmd->ioa_cb->ioarcb.cdb[0], + cmd->ioa_cb->ioarcb.resource_handle, + le32_to_cpu(ioasc), error_info->error_string); +} + +/** + * pmcraid_handle_error_log - Handle a config change (error log) from the IOA + * + * @pinstance: pointer to per adapter instance structure + * + * Return value: + * none + */ +static void pmcraid_handle_error_log(struct pmcraid_instance *pinstance) +{ + struct pmcraid_hcam_ldn *hcam_ldn; + u32 ioasc; + + hcam_ldn = (struct pmcraid_hcam_ldn *)pinstance->ldn.hcam; + + pmcraid_info + ("LDN(%x): %x type: %x lost: %x flags: %x overlay id: %x\n", + pinstance->ldn.hcam->ilid, + pinstance->ldn.hcam->op_code, + pinstance->ldn.hcam->notification_type, + pinstance->ldn.hcam->notification_lost, + pinstance->ldn.hcam->flags, + pinstance->ldn.hcam->overlay_id); + + /* log only the errors, no need to log informational log entries */ + if (pinstance->ldn.hcam->notification_type != + NOTIFICATION_TYPE_ERROR_LOG) + return; + + if (pinstance->ldn.hcam->notification_lost == + HOSTRCB_NOTIFICATIONS_LOST) + dev_err(&pinstance->pdev->dev, "Error notifications lost\n"); + + ioasc = le32_to_cpu(hcam_ldn->error_log.fd_ioasc); + + if (ioasc == PMCRAID_IOASC_UA_BUS_WAS_RESET || + ioasc == PMCRAID_IOASC_UA_BUS_WAS_RESET_BY_OTHER) { + dev_err(&pinstance->pdev->dev, + "UnitAttention due to IOA Bus Reset\n"); + scsi_report_bus_reset( + pinstance->host, + RES_BUS(hcam_ldn->error_log.fd_ra)); + } + + return; +} + +/** + * pmcraid_process_ccn - Op done function for a CCN. + * @cmd: pointer to command struct + * + * This function is the op done function for a configuration + * change notification + * + * Return value: + * none + */ +static void pmcraid_process_ccn(struct pmcraid_cmd *cmd) +{ + struct pmcraid_instance *pinstance = cmd->drv_inst; + u32 ioasc = le32_to_cpu(cmd->ioa_cb->ioasa.ioasc); + unsigned long lock_flags; + + pinstance->ccn.cmd = NULL; + pmcraid_return_cmd(cmd); + + /* If driver initiated IOA reset happened while this hcam was pending + * with IOA, or IOA bringdown sequence is in progress, no need to + * re-register the hcam + */ + if (ioasc == PMCRAID_IOASC_IOA_WAS_RESET || + atomic_read(&pinstance->ccn.ignore) == 1) { + return; + } else if (ioasc) { + dev_err(&pinstance->pdev->dev, + "Host RCB (CCN) failed with IOASC: 0x%08X\n", ioasc); + spin_lock_irqsave(pinstance->host->host_lock, lock_flags); + pmcraid_send_hcam(pinstance, PMCRAID_HCAM_CODE_CONFIG_CHANGE); + spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags); + } else { + pmcraid_handle_config_change(pinstance); + } +} + +/** + * pmcraid_process_ldn - op done function for an LDN + * @cmd: pointer to command block + * + * Return value + * none + */ +static void pmcraid_initiate_reset(struct pmcraid_instance *); + +static void pmcraid_process_ldn(struct pmcraid_cmd *cmd) +{ + struct pmcraid_instance *pinstance = cmd->drv_inst; + struct pmcraid_hcam_ldn *ldn_hcam = + (struct pmcraid_hcam_ldn *)pinstance->ldn.hcam; + u32 ioasc = le32_to_cpu(cmd->ioa_cb->ioasa.ioasc); + u32 fd_ioasc = le32_to_cpu(ldn_hcam->error_log.fd_ioasc); + unsigned long lock_flags; + + /* return the command block back to freepool */ + pinstance->ldn.cmd = NULL; + pmcraid_return_cmd(cmd); + + /* If driver initiated IOA reset happened while this hcam was pending + * with IOA, no need to re-register the hcam as reset engine will do it + * once reset sequence is complete + */ + if (ioasc == PMCRAID_IOASC_IOA_WAS_RESET || + atomic_read(&pinstance->ccn.ignore) == 1) { + return; + } else if (!ioasc) { + pmcraid_handle_error_log(pinstance); + if (fd_ioasc == PMCRAID_IOASC_NR_IOA_RESET_REQUIRED) { + spin_lock_irqsave(pinstance->host->host_lock, + lock_flags); + pmcraid_initiate_reset(pinstance); + spin_unlock_irqrestore(pinstance->host->host_lock, + lock_flags); + return; + } + } else { + dev_err(&pinstance->pdev->dev, + "Host RCB(LDN) failed with IOASC: 0x%08X\n", ioasc); + } + /* send netlink message for HCAM notification if enabled */ + if (!pmcraid_disable_aen) + pmcraid_notify_aen(pinstance, PMCRAID_HCAM_CODE_LOG_DATA); + + cmd = pmcraid_init_hcam(pinstance, PMCRAID_HCAM_CODE_LOG_DATA); + if (cmd) + pmcraid_send_hcam_cmd(cmd); +} + +/** + * pmcraid_register_hcams - register HCAMs for CCN and LDN + * + * @pinstance: pointer per adapter instance structure + * + * Return Value + * none + */ +static void pmcraid_register_hcams(struct pmcraid_instance *pinstance) +{ + pmcraid_send_hcam(pinstance, PMCRAID_HCAM_CODE_CONFIG_CHANGE); + pmcraid_send_hcam(pinstance, PMCRAID_HCAM_CODE_LOG_DATA); +} + +/** + * pmcraid_unregister_hcams - cancel HCAMs registered already + * @cmd: pointer to command used as part of reset sequence + */ +static void pmcraid_unregister_hcams(struct pmcraid_cmd *cmd) +{ + struct pmcraid_instance *pinstance = cmd->drv_inst; + + /* During IOA bringdown, HCAM gets fired and tasklet proceeds with + * handling hcam response though it is not necessary. In order to + * prevent this, set 'ignore', so that bring-down sequence doesn't + * re-send any more hcams + */ + atomic_set(&pinstance->ccn.ignore, 1); + atomic_set(&pinstance->ldn.ignore, 1); + + /* If adapter reset was forced as part of runtime reset sequence, + * start the reset sequence. + */ + if (pinstance->force_ioa_reset && !pinstance->ioa_bringdown) { + pinstance->force_ioa_reset = 0; + pinstance->ioa_state = IOA_STATE_IN_RESET_ALERT; + pmcraid_reset_alert(cmd); + return; + } + + /* Driver tries to cancel HCAMs by sending ABORT TASK for each HCAM + * one after the other. So CCN cancellation will be triggered by + * pmcraid_cancel_ldn itself. + */ + pmcraid_cancel_ldn(cmd); +} + +/** + * pmcraid_reset_enable_ioa - re-enable IOA after a hard reset + * @pinstance: pointer to adapter instance structure + * Return Value + * 1 if TRANSITION_TO_OPERATIONAL is active, otherwise 0 + */ +static void pmcraid_reinit_buffers(struct pmcraid_instance *); + +static int pmcraid_reset_enable_ioa(struct pmcraid_instance *pinstance) +{ + u32 intrs; + + pmcraid_reinit_buffers(pinstance); + intrs = pmcraid_read_interrupts(pinstance); + + pmcraid_enable_interrupts(pinstance, PMCRAID_PCI_INTERRUPTS); + + if (intrs & INTRS_TRANSITION_TO_OPERATIONAL) { + iowrite32(INTRS_TRANSITION_TO_OPERATIONAL, + pinstance->int_regs.ioa_host_interrupt_mask_reg); + iowrite32(INTRS_TRANSITION_TO_OPERATIONAL, + pinstance->int_regs.ioa_host_interrupt_clr_reg); + return 1; + } else { + return 0; + } +} + +/** + * pmcraid_soft_reset - performs a soft reset and makes IOA become ready + * @cmd : pointer to reset command block + * + * Return Value + * none + */ +static void pmcraid_soft_reset(struct pmcraid_cmd *cmd) +{ + struct pmcraid_instance *pinstance = cmd->drv_inst; + u32 int_reg; + u32 doorbell; + + /* There will be an interrupt when Transition to Operational bit is + * set so tasklet would execute next reset task. The timeout handler + * would re-initiate a reset + */ + cmd->cmd_done = pmcraid_ioa_reset; + cmd->timer.data = (unsigned long)cmd; + cmd->timer.expires = jiffies + + msecs_to_jiffies(PMCRAID_TRANSOP_TIMEOUT); + cmd->timer.function = (void (*)(unsigned long))pmcraid_timeout_handler; + + if (!timer_pending(&cmd->timer)) + add_timer(&cmd->timer); + + /* Enable destructive diagnostics on IOA if it is not yet in + * operational state + */ + doorbell = DOORBELL_RUNTIME_RESET | + DOORBELL_ENABLE_DESTRUCTIVE_DIAGS; + + iowrite32(doorbell, pinstance->int_regs.host_ioa_interrupt_reg); + int_reg = ioread32(pinstance->int_regs.ioa_host_interrupt_reg); + pmcraid_info("Waiting for IOA to become operational %x:%x\n", + ioread32(pinstance->int_regs.host_ioa_interrupt_reg), + int_reg); +} + +/** + * pmcraid_get_dump - retrieves IOA dump in case of Unit Check interrupt + * + * @pinstance: pointer to adapter instance structure + * + * Return Value + * none + */ +static void pmcraid_get_dump(struct pmcraid_instance *pinstance) +{ + pmcraid_info("%s is not yet implemented\n", __func__); +} + +/** + * pmcraid_fail_outstanding_cmds - Fails all outstanding ops. + * @pinstance: pointer to adapter instance structure + * + * This function fails all outstanding ops. If they are submitted to IOA + * already, it sends cancel all messages if IOA is still accepting IOARCBs, + * otherwise just completes the commands and returns the cmd blocks to free + * pool. + * + * Return value: + * none + */ +static void pmcraid_fail_outstanding_cmds(struct pmcraid_instance *pinstance) +{ + struct pmcraid_cmd *cmd, *temp; + unsigned long lock_flags; + + /* pending command list is protected by pending_pool_lock. Its + * traversal must be done as within this lock + */ + spin_lock_irqsave(&pinstance->pending_pool_lock, lock_flags); + list_for_each_entry_safe(cmd, temp, &pinstance->pending_cmd_pool, + free_list) { + list_del(&cmd->free_list); + spin_unlock_irqrestore(&pinstance->pending_pool_lock, + lock_flags); + cmd->ioa_cb->ioasa.ioasc = + cpu_to_le32(PMCRAID_IOASC_IOA_WAS_RESET); + cmd->ioa_cb->ioasa.ilid = + cpu_to_be32(PMCRAID_DRIVER_ILID); + + /* In case the command timer is still running */ + del_timer(&cmd->timer); + + /* If this is an IO command, complete it by invoking scsi_done + * function. If this is one of the internal commands other + * than pmcraid_ioa_reset and HCAM commands invoke cmd_done to + * complete it + */ + if (cmd->scsi_cmd) { + + struct scsi_cmnd *scsi_cmd = cmd->scsi_cmd; + __le32 resp = cmd->ioa_cb->ioarcb.response_handle; + + scsi_cmd->result |= DID_ERROR << 16; + + scsi_dma_unmap(scsi_cmd); + pmcraid_return_cmd(cmd); + + + pmcraid_info("failing(%d) CDB[0] = %x result: %x\n", + le32_to_cpu(resp) >> 2, + cmd->ioa_cb->ioarcb.cdb[0], + scsi_cmd->result); + scsi_cmd->scsi_done(scsi_cmd); + } else if (cmd->cmd_done == pmcraid_internal_done || + cmd->cmd_done == pmcraid_erp_done) { + cmd->cmd_done(cmd); + } else if (cmd->cmd_done != pmcraid_ioa_reset) { + pmcraid_return_cmd(cmd); + } + + atomic_dec(&pinstance->outstanding_cmds); + spin_lock_irqsave(&pinstance->pending_pool_lock, lock_flags); + } + + spin_unlock_irqrestore(&pinstance->pending_pool_lock, lock_flags); +} + +/** + * pmcraid_ioa_reset - Implementation of IOA reset logic + * + * @cmd: pointer to the cmd block to be used for entire reset process + * + * This function executes most of the steps required for IOA reset. This gets + * called by user threads (modprobe/insmod/rmmod) timer, tasklet and midlayer's + * 'eh_' thread. Access to variables used for controling the reset sequence is + * synchronized using host lock. Various functions called during reset process + * would make use of a single command block, pointer to which is also stored in + * adapter instance structure. + * + * Return Value + * None + */ +static void pmcraid_ioa_reset(struct pmcraid_cmd *cmd) +{ + struct pmcraid_instance *pinstance = cmd->drv_inst; + u8 reset_complete = 0; + + pinstance->ioa_reset_in_progress = 1; + + if (pinstance->reset_cmd != cmd) { + pmcraid_err("reset is called with different command block\n"); + pinstance->reset_cmd = cmd; + } + + pmcraid_info("reset_engine: state = %d, command = %p\n", + pinstance->ioa_state, cmd); + + switch (pinstance->ioa_state) { + + case IOA_STATE_DEAD: + /* If IOA is offline, whatever may be the reset reason, just + * return. callers might be waiting on the reset wait_q, wake + * up them + */ + pmcraid_err("IOA is offline no reset is possible\n"); + reset_complete = 1; + break; + + case IOA_STATE_IN_BRINGDOWN: + /* we enter here, once ioa shutdown command is processed by IOA + * Alert IOA for a possible reset. If reset alert fails, IOA + * goes through hard-reset + */ + pmcraid_disable_interrupts(pinstance, ~0); + pinstance->ioa_state = IOA_STATE_IN_RESET_ALERT; + pmcraid_reset_alert(cmd); + break; + + case IOA_STATE_UNKNOWN: + /* We may be called during probe or resume. Some pre-processing + * is required for prior to reset + */ + scsi_block_requests(pinstance->host); + + /* If asked to reset while IOA was processing responses or + * there are any error responses then IOA may require + * hard-reset. + */ + if (pinstance->ioa_hard_reset == 0) { + if (ioread32(pinstance->ioa_status) & + INTRS_TRANSITION_TO_OPERATIONAL) { + pmcraid_info("sticky bit set, bring-up\n"); + pinstance->ioa_state = IOA_STATE_IN_BRINGUP; + pmcraid_reinit_cmdblk(cmd); + pmcraid_identify_hrrq(cmd); + } else { + pinstance->ioa_state = IOA_STATE_IN_SOFT_RESET; + pmcraid_soft_reset(cmd); + } + } else { + /* Alert IOA of a possible reset and wait for critical + * operation in progress bit to reset + */ + pinstance->ioa_state = IOA_STATE_IN_RESET_ALERT; + pmcraid_reset_alert(cmd); + } + break; + + case IOA_STATE_IN_RESET_ALERT: + /* If critical operation in progress bit is reset or wait gets + * timed out, reset proceeds with starting BIST on the IOA. + * pmcraid_ioa_hard_reset keeps a count of reset attempts. If + * they are 3 or more, reset engine marks IOA dead and returns + */ + pinstance->ioa_state = IOA_STATE_IN_HARD_RESET; + pmcraid_start_bist(cmd); + break; + + case IOA_STATE_IN_HARD_RESET: + pinstance->ioa_reset_attempts++; + + /* retry reset if we haven't reached maximum allowed limit */ + if (pinstance->ioa_reset_attempts > PMCRAID_RESET_ATTEMPTS) { + pinstance->ioa_reset_attempts = 0; + pmcraid_err("IOA didn't respond marking it as dead\n"); + pinstance->ioa_state = IOA_STATE_DEAD; + reset_complete = 1; + break; + } + + /* Once either bist or pci reset is done, restore PCI config + * space. If this fails, proceed with hard reset again + */ + + if (pci_restore_state(pinstance->pdev)) { + pmcraid_info("config-space error resetting again\n"); + pinstance->ioa_state = IOA_STATE_IN_RESET_ALERT; + pmcraid_reset_alert(cmd); + break; + } + + /* fail all pending commands */ + pmcraid_fail_outstanding_cmds(pinstance); + + /* check if unit check is active, if so extract dump */ + if (pinstance->ioa_unit_check) { + pmcraid_info("unit check is active\n"); + pinstance->ioa_unit_check = 0; + pmcraid_get_dump(pinstance); + pinstance->ioa_reset_attempts--; + pinstance->ioa_state = IOA_STATE_IN_RESET_ALERT; + pmcraid_reset_alert(cmd); + break; + } + + /* if the reset reason is to bring-down the ioa, we might be + * done with the reset restore pci_config_space and complete + * the reset + */ + if (pinstance->ioa_bringdown) { + pmcraid_info("bringing down the adapter\n"); + pinstance->ioa_shutdown_type = SHUTDOWN_NONE; + pinstance->ioa_bringdown = 0; + pinstance->ioa_state = IOA_STATE_UNKNOWN; + reset_complete = 1; + } else { + /* bring-up IOA, so proceed with soft reset + * Reinitialize hrrq_buffers and their indices also + * enable interrupts after a pci_restore_state + */ + if (pmcraid_reset_enable_ioa(pinstance)) { + pinstance->ioa_state = IOA_STATE_IN_BRINGUP; + pmcraid_info("bringing up the adapter\n"); + pmcraid_reinit_cmdblk(cmd); + pmcraid_identify_hrrq(cmd); + } else { + pinstance->ioa_state = IOA_STATE_IN_SOFT_RESET; + pmcraid_soft_reset(cmd); + } + } + break; + + case IOA_STATE_IN_SOFT_RESET: + /* TRANSITION TO OPERATIONAL is on so start initialization + * sequence + */ + pmcraid_info("In softreset proceeding with bring-up\n"); + pinstance->ioa_state = IOA_STATE_IN_BRINGUP; + + /* Initialization commands start with HRRQ identification. From + * now on tasklet completes most of the commands as IOA is up + * and intrs are enabled + */ + pmcraid_identify_hrrq(cmd); + break; + + case IOA_STATE_IN_BRINGUP: + /* we are done with bringing up of IOA, change the ioa_state to + * operational and wake up any waiters + */ + pinstance->ioa_state = IOA_STATE_OPERATIONAL; + reset_complete = 1; + break; + + case IOA_STATE_OPERATIONAL: + default: + /* When IOA is operational and a reset is requested, check for + * the reset reason. If reset is to bring down IOA, unregister + * HCAMs and initiate shutdown; if adapter reset is forced then + * restart reset sequence again + */ + if (pinstance->ioa_shutdown_type == SHUTDOWN_NONE && + pinstance->force_ioa_reset == 0) { + reset_complete = 1; + } else { + if (pinstance->ioa_shutdown_type != SHUTDOWN_NONE) + pinstance->ioa_state = IOA_STATE_IN_BRINGDOWN; + pmcraid_reinit_cmdblk(cmd); + pmcraid_unregister_hcams(cmd); + } + break; + } + + /* reset will be completed if ioa_state is either DEAD or UNKNOWN or + * OPERATIONAL. Reset all control variables used during reset, wake up + * any waiting threads and let the SCSI mid-layer send commands. Note + * that host_lock must be held before invoking scsi_report_bus_reset. + */ + if (reset_complete) { + pinstance->ioa_reset_in_progress = 0; + pinstance->ioa_reset_attempts = 0; + pinstance->reset_cmd = NULL; + pinstance->ioa_shutdown_type = SHUTDOWN_NONE; + pinstance->ioa_bringdown = 0; + pmcraid_return_cmd(cmd); + + /* If target state is to bring up the adapter, proceed with + * hcam registration and resource exposure to mid-layer. + */ + if (pinstance->ioa_state == IOA_STATE_OPERATIONAL) + pmcraid_register_hcams(pinstance); + + wake_up_all(&pinstance->reset_wait_q); + } + + return; +} + +/** + * pmcraid_initiate_reset - initiates reset sequence. This is called from + * ISR/tasklet during error interrupts including IOA unit check. If reset + * is already in progress, it just returns, otherwise initiates IOA reset + * to bring IOA up to operational state. + * + * @pinstance: pointer to adapter instance structure + * + * Return value + * none + */ +static void pmcraid_initiate_reset(struct pmcraid_instance *pinstance) +{ + struct pmcraid_cmd *cmd; + + /* If the reset is already in progress, just return, otherwise start + * reset sequence and return + */ + if (!pinstance->ioa_reset_in_progress) { + scsi_block_requests(pinstance->host); + cmd = pmcraid_get_free_cmd(pinstance); + + if (cmd == NULL) { + pmcraid_err("no cmnd blocks for initiate_reset\n"); + return; + } + + pinstance->ioa_shutdown_type = SHUTDOWN_NONE; + pinstance->reset_cmd = cmd; + pinstance->force_ioa_reset = 1; + pmcraid_ioa_reset(cmd); + } +} + +/** + * pmcraid_reset_reload - utility routine for doing IOA reset either to bringup + * or bringdown IOA + * @pinstance: pointer adapter instance structure + * @shutdown_type: shutdown type to be used NONE, NORMAL or ABRREV + * @target_state: expected target state after reset + * + * Note: This command initiates reset and waits for its completion. Hence this + * should not be called from isr/timer/tasklet functions (timeout handlers, + * error response handlers and interrupt handlers). + * + * Return Value + * 1 in case ioa_state is not target_state, 0 otherwise. + */ +static int pmcraid_reset_reload( + struct pmcraid_instance *pinstance, + u8 shutdown_type, + u8 target_state +) +{ + struct pmcraid_cmd *reset_cmd = NULL; + unsigned long lock_flags; + int reset = 1; + + spin_lock_irqsave(pinstance->host->host_lock, lock_flags); + + if (pinstance->ioa_reset_in_progress) { + pmcraid_info("reset_reload: reset is already in progress\n"); + + spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags); + + wait_event(pinstance->reset_wait_q, + !pinstance->ioa_reset_in_progress); + + spin_lock_irqsave(pinstance->host->host_lock, lock_flags); + + if (pinstance->ioa_state == IOA_STATE_DEAD) { + spin_unlock_irqrestore(pinstance->host->host_lock, + lock_flags); + pmcraid_info("reset_reload: IOA is dead\n"); + return reset; + } else if (pinstance->ioa_state == target_state) { + reset = 0; + } + } + + if (reset) { + pmcraid_info("reset_reload: proceeding with reset\n"); + scsi_block_requests(pinstance->host); + reset_cmd = pmcraid_get_free_cmd(pinstance); + + if (reset_cmd == NULL) { + pmcraid_err("no free cmnd for reset_reload\n"); + spin_unlock_irqrestore(pinstance->host->host_lock, + lock_flags); + return reset; + } + + if (shutdown_type == SHUTDOWN_NORMAL) + pinstance->ioa_bringdown = 1; + + pinstance->ioa_shutdown_type = shutdown_type; + pinstance->reset_cmd = reset_cmd; + pinstance->force_ioa_reset = reset; + pmcraid_info("reset_reload: initiating reset\n"); + pmcraid_ioa_reset(reset_cmd); + spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags); + pmcraid_info("reset_reload: waiting for reset to complete\n"); + wait_event(pinstance->reset_wait_q, + !pinstance->ioa_reset_in_progress); + + pmcraid_info("reset_reload: reset is complete !! \n"); + scsi_unblock_requests(pinstance->host); + if (pinstance->ioa_state == target_state) + reset = 0; + } + + return reset; +} + +/** + * pmcraid_reset_bringdown - wrapper over pmcraid_reset_reload to bringdown IOA + * + * @pinstance: pointer to adapter instance structure + * + * Return Value + * whatever is returned from pmcraid_reset_reload + */ +static int pmcraid_reset_bringdown(struct pmcraid_instance *pinstance) +{ + return pmcraid_reset_reload(pinstance, + SHUTDOWN_NORMAL, + IOA_STATE_UNKNOWN); +} + +/** + * pmcraid_reset_bringup - wrapper over pmcraid_reset_reload to bring up IOA + * + * @pinstance: pointer to adapter instance structure + * + * Return Value + * whatever is returned from pmcraid_reset_reload + */ +static int pmcraid_reset_bringup(struct pmcraid_instance *pinstance) +{ + return pmcraid_reset_reload(pinstance, + SHUTDOWN_NONE, + IOA_STATE_OPERATIONAL); +} + +/** + * pmcraid_request_sense - Send request sense to a device + * @cmd: pmcraid command struct + * + * This function sends a request sense to a device as a result of a check + * condition. This method re-uses the same command block that failed earlier. + */ +static void pmcraid_request_sense(struct pmcraid_cmd *cmd) +{ + struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb; + struct pmcraid_ioadl_desc *ioadl = ioarcb->add_data.u.ioadl; + + /* allocate DMAable memory for sense buffers */ + cmd->sense_buffer = pci_alloc_consistent(cmd->drv_inst->pdev, + SCSI_SENSE_BUFFERSIZE, + &cmd->sense_buffer_dma); + + if (cmd->sense_buffer == NULL) { + pmcraid_err + ("couldn't allocate sense buffer for request sense\n"); + pmcraid_erp_done(cmd); + return; + } + + /* re-use the command block */ + memset(&cmd->ioa_cb->ioasa, 0, sizeof(struct pmcraid_ioasa)); + memset(ioarcb->cdb, 0, PMCRAID_MAX_CDB_LEN); + ioarcb->request_flags0 = (SYNC_COMPLETE | + NO_LINK_DESCS | + INHIBIT_UL_CHECK); + ioarcb->request_type = REQ_TYPE_SCSI; + ioarcb->cdb[0] = REQUEST_SENSE; + ioarcb->cdb[4] = SCSI_SENSE_BUFFERSIZE; + + ioarcb->ioadl_bus_addr = cpu_to_le64((cmd->ioa_cb_bus_addr) + + offsetof(struct pmcraid_ioarcb, + add_data.u.ioadl[0])); + ioarcb->ioadl_length = cpu_to_le32(sizeof(struct pmcraid_ioadl_desc)); + + ioarcb->data_transfer_length = cpu_to_le32(SCSI_SENSE_BUFFERSIZE); + + ioadl->address = cpu_to_le64(cmd->sense_buffer_dma); + ioadl->data_len = cpu_to_le32(SCSI_SENSE_BUFFERSIZE); + ioadl->flags = cpu_to_le32(IOADL_FLAGS_LAST_DESC); + + /* request sense might be called as part of error response processing + * which runs in tasklets context. It is possible that mid-layer might + * schedule queuecommand during this time, hence, writting to IOARRIN + * must be protect by host_lock + */ + pmcraid_send_cmd(cmd, pmcraid_erp_done, + PMCRAID_REQUEST_SENSE_TIMEOUT, + pmcraid_timeout_handler); +} + +/** + * pmcraid_cancel_all - cancel all outstanding IOARCBs as part of error recovery + * @cmd: command that failed + * @sense: true if request_sense is required after cancel all + * + * This function sends a cancel all to a device to clear the queue. + */ +static void pmcraid_cancel_all(struct pmcraid_cmd *cmd, u32 sense) +{ + struct scsi_cmnd *scsi_cmd = cmd->scsi_cmd; + struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb; + struct pmcraid_resource_entry *res = scsi_cmd->device->hostdata; + void (*cmd_done) (struct pmcraid_cmd *) = sense ? pmcraid_erp_done + : pmcraid_request_sense; + + memset(ioarcb->cdb, 0, PMCRAID_MAX_CDB_LEN); + ioarcb->request_flags0 = SYNC_OVERRIDE; + ioarcb->request_type = REQ_TYPE_IOACMD; + ioarcb->cdb[0] = PMCRAID_CANCEL_ALL_REQUESTS; + + if (RES_IS_GSCSI(res->cfg_entry)) + ioarcb->cdb[1] = PMCRAID_SYNC_COMPLETE_AFTER_CANCEL; + + ioarcb->ioadl_bus_addr = 0; + ioarcb->ioadl_length = 0; + ioarcb->data_transfer_length = 0; + ioarcb->ioarcb_bus_addr &= (~0x1FULL); + + /* writing to IOARRIN must be protected by host_lock, as mid-layer + * schedule queuecommand while we are doing this + */ + pmcraid_send_cmd(cmd, cmd_done, + PMCRAID_REQUEST_SENSE_TIMEOUT, + pmcraid_timeout_handler); +} + +/** + * pmcraid_frame_auto_sense: frame fixed format sense information + * + * @cmd: pointer to failing command block + * + * Return value + * none + */ +static void pmcraid_frame_auto_sense(struct pmcraid_cmd *cmd) +{ + u8 *sense_buf = cmd->scsi_cmd->sense_buffer; + struct pmcraid_resource_entry *res = cmd->scsi_cmd->device->hostdata; + struct pmcraid_ioasa *ioasa = &cmd->ioa_cb->ioasa; + u32 ioasc = le32_to_cpu(ioasa->ioasc); + u32 failing_lba = 0; + + memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE); + cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION; + + if (RES_IS_VSET(res->cfg_entry) && + ioasc == PMCRAID_IOASC_ME_READ_ERROR_NO_REALLOC && + ioasa->u.vset.failing_lba_hi != 0) { + + sense_buf[0] = 0x72; + sense_buf[1] = PMCRAID_IOASC_SENSE_KEY(ioasc); + sense_buf[2] = PMCRAID_IOASC_SENSE_CODE(ioasc); + sense_buf[3] = PMCRAID_IOASC_SENSE_QUAL(ioasc); + + sense_buf[7] = 12; + sense_buf[8] = 0; + sense_buf[9] = 0x0A; + sense_buf[10] = 0x80; + + failing_lba = le32_to_cpu(ioasa->u.vset.failing_lba_hi); + + sense_buf[12] = (failing_lba & 0xff000000) >> 24; + sense_buf[13] = (failing_lba & 0x00ff0000) >> 16; + sense_buf[14] = (failing_lba & 0x0000ff00) >> 8; + sense_buf[15] = failing_lba & 0x000000ff; + + failing_lba = le32_to_cpu(ioasa->u.vset.failing_lba_lo); + + sense_buf[16] = (failing_lba & 0xff000000) >> 24; + sense_buf[17] = (failing_lba & 0x00ff0000) >> 16; + sense_buf[18] = (failing_lba & 0x0000ff00) >> 8; + sense_buf[19] = failing_lba & 0x000000ff; + } else { + sense_buf[0] = 0x70; + sense_buf[2] = PMCRAID_IOASC_SENSE_KEY(ioasc); + sense_buf[12] = PMCRAID_IOASC_SENSE_CODE(ioasc); + sense_buf[13] = PMCRAID_IOASC_SENSE_QUAL(ioasc); + + if (ioasc == PMCRAID_IOASC_ME_READ_ERROR_NO_REALLOC) { + if (RES_IS_VSET(res->cfg_entry)) + failing_lba = + le32_to_cpu(ioasa->u. + vset.failing_lba_lo); + sense_buf[0] |= 0x80; + sense_buf[3] = (failing_lba >> 24) & 0xff; + sense_buf[4] = (failing_lba >> 16) & 0xff; + sense_buf[5] = (failing_lba >> 8) & 0xff; + sense_buf[6] = failing_lba & 0xff; + } + + sense_buf[7] = 6; /* additional length */ + } +} + +/** + * pmcraid_error_handler - Error response handlers for a SCSI op + * @cmd: pointer to pmcraid_cmd that has failed + * + * This function determines whether or not to initiate ERP on the affected + * device. This is called from a tasklet, which doesn't hold any locks. + * + * Return value: + * 0 it caller can complete the request, otherwise 1 where in error + * handler itself completes the request and returns the command block + * back to free-pool + */ +static int pmcraid_error_handler(struct pmcraid_cmd *cmd) +{ + struct scsi_cmnd *scsi_cmd = cmd->scsi_cmd; + struct pmcraid_resource_entry *res = scsi_cmd->device->hostdata; + struct pmcraid_instance *pinstance = cmd->drv_inst; + struct pmcraid_ioasa *ioasa = &cmd->ioa_cb->ioasa; + u32 ioasc = le32_to_cpu(ioasa->ioasc); + u32 masked_ioasc = ioasc & PMCRAID_IOASC_SENSE_MASK; + u32 sense_copied = 0; + + if (!res) { + pmcraid_info("resource pointer is NULL\n"); + return 0; + } + + /* If this was a SCSI read/write command keep count of errors */ + if (SCSI_CMD_TYPE(scsi_cmd->cmnd[0]) == SCSI_READ_CMD) + atomic_inc(&res->read_failures); + else if (SCSI_CMD_TYPE(scsi_cmd->cmnd[0]) == SCSI_WRITE_CMD) + atomic_inc(&res->write_failures); + + if (!RES_IS_GSCSI(res->cfg_entry) && + masked_ioasc != PMCRAID_IOASC_HW_DEVICE_BUS_STATUS_ERROR) { + pmcraid_frame_auto_sense(cmd); + } + + /* Log IOASC/IOASA information based on user settings */ + pmcraid_ioasc_logger(ioasc, cmd); + + switch (masked_ioasc) { + + case PMCRAID_IOASC_AC_TERMINATED_BY_HOST: + scsi_cmd->result |= (DID_ABORT << 16); + break; + + case PMCRAID_IOASC_IR_INVALID_RESOURCE_HANDLE: + case PMCRAID_IOASC_HW_CANNOT_COMMUNICATE: + scsi_cmd->result |= (DID_NO_CONNECT << 16); + break; + + case PMCRAID_IOASC_NR_SYNC_REQUIRED: + res->sync_reqd = 1; + scsi_cmd->result |= (DID_IMM_RETRY << 16); + break; + + case PMCRAID_IOASC_ME_READ_ERROR_NO_REALLOC: + scsi_cmd->result |= (DID_PASSTHROUGH << 16); + break; + + case PMCRAID_IOASC_UA_BUS_WAS_RESET: + case PMCRAID_IOASC_UA_BUS_WAS_RESET_BY_OTHER: + if (!res->reset_progress) + scsi_report_bus_reset(pinstance->host, + scsi_cmd->device->channel); + scsi_cmd->result |= (DID_ERROR << 16); + break; + + case PMCRAID_IOASC_HW_DEVICE_BUS_STATUS_ERROR: + scsi_cmd->result |= PMCRAID_IOASC_SENSE_STATUS(ioasc); + res->sync_reqd = 1; + + /* if check_condition is not active return with error otherwise + * get/frame the sense buffer + */ + if (PMCRAID_IOASC_SENSE_STATUS(ioasc) != + SAM_STAT_CHECK_CONDITION && + PMCRAID_IOASC_SENSE_STATUS(ioasc) != SAM_STAT_ACA_ACTIVE) + return 0; + + /* If we have auto sense data as part of IOASA pass it to + * mid-layer + */ + if (ioasa->auto_sense_length != 0) { + short sense_len = ioasa->auto_sense_length; + int data_size = min_t(u16, le16_to_cpu(sense_len), + SCSI_SENSE_BUFFERSIZE); + + memcpy(scsi_cmd->sense_buffer, + ioasa->sense_data, + data_size); + sense_copied = 1; + } + + if (RES_IS_GSCSI(res->cfg_entry)) { + pmcraid_cancel_all(cmd, sense_copied); + } else if (sense_copied) { + pmcraid_erp_done(cmd); + return 0; + } else { + pmcraid_request_sense(cmd); + } + + return 1; + + case PMCRAID_IOASC_NR_INIT_CMD_REQUIRED: + break; + + default: + if (PMCRAID_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) + scsi_cmd->result |= (DID_ERROR << 16); + break; + } + return 0; +} + +/** + * pmcraid_reset_device - device reset handler functions + * + * @scsi_cmd: scsi command struct + * @modifier: reset modifier indicating the reset sequence to be performed + * + * This function issues a device reset to the affected device. + * A LUN reset will be sent to the device first. If that does + * not work, a target reset will be sent. + * + * Return value: + * SUCCESS / FAILED + */ +static int pmcraid_reset_device( + struct scsi_cmnd *scsi_cmd, + unsigned long timeout, + u8 modifier +) +{ + struct pmcraid_cmd *cmd; + struct pmcraid_instance *pinstance; + struct pmcraid_resource_entry *res; + struct pmcraid_ioarcb *ioarcb; + unsigned long lock_flags; + u32 ioasc; + + pinstance = + (struct pmcraid_instance *)scsi_cmd->device->host->hostdata; + res = scsi_cmd->device->hostdata; + + if (!res) { + pmcraid_err("reset_device: NULL resource pointer\n"); + return FAILED; + } + + /* If adapter is currently going through reset/reload, return failed. + * This will force the mid-layer to call _eh_bus/host reset, which + * will then go to sleep and wait for the reset to complete + */ + spin_lock_irqsave(pinstance->host->host_lock, lock_flags); + if (pinstance->ioa_reset_in_progress || + pinstance->ioa_state == IOA_STATE_DEAD) { + spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags); + return FAILED; + } + + res->reset_progress = 1; + pmcraid_info("Resetting %s resource with addr %x\n", + ((modifier & RESET_DEVICE_LUN) ? "LUN" : + ((modifier & RESET_DEVICE_TARGET) ? "TARGET" : "BUS")), + le32_to_cpu(res->cfg_entry.resource_address)); + + /* get a free cmd block */ + cmd = pmcraid_get_free_cmd(pinstance); + + if (cmd == NULL) { + spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags); + pmcraid_err("%s: no cmd blocks are available\n", __func__); + return FAILED; + } + + ioarcb = &cmd->ioa_cb->ioarcb; + ioarcb->resource_handle = res->cfg_entry.resource_handle; + ioarcb->request_type = REQ_TYPE_IOACMD; + ioarcb->cdb[0] = PMCRAID_RESET_DEVICE; + + /* Initialize reset modifier bits */ + if (modifier) + modifier = ENABLE_RESET_MODIFIER | modifier; + + ioarcb->cdb[1] = modifier; + + init_completion(&cmd->wait_for_completion); + cmd->completion_req = 1; + + pmcraid_info("cmd(CDB[0] = %x) for %x with index = %d\n", + cmd->ioa_cb->ioarcb.cdb[0], + le32_to_cpu(cmd->ioa_cb->ioarcb.resource_handle), + le32_to_cpu(cmd->ioa_cb->ioarcb.response_handle) >> 2); + + pmcraid_send_cmd(cmd, + pmcraid_internal_done, + timeout, + pmcraid_timeout_handler); + + spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags); + + /* RESET_DEVICE command completes after all pending IOARCBs are + * completed. Once this command is completed, pmcraind_internal_done + * will wake up the 'completion' queue. + */ + wait_for_completion(&cmd->wait_for_completion); + + /* complete the command here itself and return the command block + * to free list + */ + pmcraid_return_cmd(cmd); + res->reset_progress = 0; + ioasc = le32_to_cpu(cmd->ioa_cb->ioasa.ioasc); + + /* set the return value based on the returned ioasc */ + return PMCRAID_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS; +} + +/** + * _pmcraid_io_done - helper for pmcraid_io_done function + * + * @cmd: pointer to pmcraid command struct + * @reslen: residual data length to be set in the ioasa + * @ioasc: ioasc either returned by IOA or set by driver itself. + * + * This function is invoked by pmcraid_io_done to complete mid-layer + * scsi ops. + * + * Return value: + * 0 if caller is required to return it to free_pool. Returns 1 if + * caller need not worry about freeing command block as error handler + * will take care of that. + */ + +static int _pmcraid_io_done(struct pmcraid_cmd *cmd, int reslen, int ioasc) +{ + struct scsi_cmnd *scsi_cmd = cmd->scsi_cmd; + int rc = 0; + + scsi_set_resid(scsi_cmd, reslen); + + pmcraid_info("response(%d) CDB[0] = %x ioasc:result: %x:%x\n", + le32_to_cpu(cmd->ioa_cb->ioarcb.response_handle) >> 2, + cmd->ioa_cb->ioarcb.cdb[0], + ioasc, scsi_cmd->result); + + if (PMCRAID_IOASC_SENSE_KEY(ioasc) != 0) + rc = pmcraid_error_handler(cmd); + + if (rc == 0) { + scsi_dma_unmap(scsi_cmd); + scsi_cmd->scsi_done(scsi_cmd); + } + + return rc; +} + +/** + * pmcraid_io_done - SCSI completion function + * + * @cmd: pointer to pmcraid command struct + * + * This function is invoked by tasklet/mid-layer error handler to completing + * the SCSI ops sent from mid-layer. + * + * Return value + * none + */ + +static void pmcraid_io_done(struct pmcraid_cmd *cmd) +{ + u32 ioasc = le32_to_cpu(cmd->ioa_cb->ioasa.ioasc); + u32 reslen = le32_to_cpu(cmd->ioa_cb->ioasa.residual_data_length); + + if (_pmcraid_io_done(cmd, reslen, ioasc) == 0) + pmcraid_return_cmd(cmd); +} + +/** + * pmcraid_abort_cmd - Aborts a single IOARCB already submitted to IOA + * + * @cmd: command block of the command to be aborted + * + * Return Value: + * returns pointer to command structure used as cancelling cmd + */ +static struct pmcraid_cmd *pmcraid_abort_cmd(struct pmcraid_cmd *cmd) +{ + struct pmcraid_cmd *cancel_cmd; + struct pmcraid_instance *pinstance; + struct pmcraid_resource_entry *res; + + pinstance = (struct pmcraid_instance *)cmd->drv_inst; + res = cmd->scsi_cmd->device->hostdata; + + cancel_cmd = pmcraid_get_free_cmd(pinstance); + + if (cancel_cmd == NULL) { + pmcraid_err("%s: no cmd blocks are available\n", __func__); + return NULL; + } + + pmcraid_prepare_cancel_cmd(cancel_cmd, cmd); + + pmcraid_info("aborting command CDB[0]= %x with index = %d\n", + cmd->ioa_cb->ioarcb.cdb[0], + cmd->ioa_cb->ioarcb.response_handle >> 2); + + init_completion(&cancel_cmd->wait_for_completion); + cancel_cmd->completion_req = 1; + + pmcraid_info("command (%d) CDB[0] = %x for %x\n", + le32_to_cpu(cancel_cmd->ioa_cb->ioarcb.response_handle) >> 2, + cmd->ioa_cb->ioarcb.cdb[0], + le32_to_cpu(cancel_cmd->ioa_cb->ioarcb.resource_handle)); + + pmcraid_send_cmd(cancel_cmd, + pmcraid_internal_done, + PMCRAID_INTERNAL_TIMEOUT, + pmcraid_timeout_handler); + return cancel_cmd; +} + +/** + * pmcraid_abort_complete - Waits for ABORT TASK completion + * + * @cancel_cmd: command block use as cancelling command + * + * Return Value: + * returns SUCCESS if ABORT TASK has good completion + * otherwise FAILED + */ +static int pmcraid_abort_complete(struct pmcraid_cmd *cancel_cmd) +{ + struct pmcraid_resource_entry *res; + u32 ioasc; + + wait_for_completion(&cancel_cmd->wait_for_completion); + res = cancel_cmd->u.res; + cancel_cmd->u.res = NULL; + ioasc = le32_to_cpu(cancel_cmd->ioa_cb->ioasa.ioasc); + + /* If the abort task is not timed out we will get a Good completion + * as sense_key, otherwise we may get one the following responses + * due to subsquent bus reset or device reset. In case IOASC is + * NR_SYNC_REQUIRED, set sync_reqd flag for the corresponding resource + */ + if (ioasc == PMCRAID_IOASC_UA_BUS_WAS_RESET || + ioasc == PMCRAID_IOASC_NR_SYNC_REQUIRED) { + if (ioasc == PMCRAID_IOASC_NR_SYNC_REQUIRED) + res->sync_reqd = 1; + ioasc = 0; + } + + /* complete the command here itself */ + pmcraid_return_cmd(cancel_cmd); + return PMCRAID_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS; +} + +/** + * pmcraid_eh_abort_handler - entry point for aborting a single task on errors + * + * @scsi_cmd: scsi command struct given by mid-layer. When this is called + * mid-layer ensures that no other commands are queued. This + * never gets called under interrupt, but a separate eh thread. + * + * Return value: + * SUCCESS / FAILED + */ +static int pmcraid_eh_abort_handler(struct scsi_cmnd *scsi_cmd) +{ + struct pmcraid_instance *pinstance; + struct pmcraid_cmd *cmd; + struct pmcraid_resource_entry *res; + unsigned long host_lock_flags; + unsigned long pending_lock_flags; + struct pmcraid_cmd *cancel_cmd = NULL; + int cmd_found = 0; + int rc = FAILED; + + pinstance = + (struct pmcraid_instance *)scsi_cmd->device->host->hostdata; + + dev_err(&pinstance->pdev->dev, + "I/O command timed out, aborting it.\n"); + + res = scsi_cmd->device->hostdata; + + if (res == NULL) + return rc; + + /* If we are currently going through reset/reload, return failed. + * This will force the mid-layer to eventually call + * pmcraid_eh_host_reset which will then go to sleep and wait for the + * reset to complete + */ + spin_lock_irqsave(pinstance->host->host_lock, host_lock_flags); + + if (pinstance->ioa_reset_in_progress || + pinstance->ioa_state == IOA_STATE_DEAD) { + spin_unlock_irqrestore(pinstance->host->host_lock, + host_lock_flags); + return rc; + } + + /* loop over pending cmd list to find cmd corresponding to this + * scsi_cmd. Note that this command might not have been completed + * already. locking: all pending commands are protected with + * pending_pool_lock. + */ + spin_lock_irqsave(&pinstance->pending_pool_lock, pending_lock_flags); + list_for_each_entry(cmd, &pinstance->pending_cmd_pool, free_list) { + + if (cmd->scsi_cmd == scsi_cmd) { + cmd_found = 1; + break; + } + } + + spin_unlock_irqrestore(&pinstance->pending_pool_lock, + pending_lock_flags); + + /* If the command to be aborted was given to IOA and still pending with + * it, send ABORT_TASK to abort this and wait for its completion + */ + if (cmd_found) + cancel_cmd = pmcraid_abort_cmd(cmd); + + spin_unlock_irqrestore(pinstance->host->host_lock, + host_lock_flags); + + if (cancel_cmd) { + cancel_cmd->u.res = cmd->scsi_cmd->device->hostdata; + rc = pmcraid_abort_complete(cancel_cmd); + } + + return cmd_found ? rc : SUCCESS; +} + +/** + * pmcraid_eh_xxxx_reset_handler - bus/target/device reset handler callbacks + * + * @scmd: pointer to scsi_cmd that was sent to the resource to be reset. + * + * All these routines invokve pmcraid_reset_device with appropriate parameters. + * Since these are called from mid-layer EH thread, no other IO will be queued + * to the resource being reset. However, control path (IOCTL) may be active so + * it is necessary to synchronize IOARRIN writes which pmcraid_reset_device + * takes care by locking/unlocking host_lock. + * + * Return value + * SUCCESS or FAILED + */ +static int pmcraid_eh_device_reset_handler(struct scsi_cmnd *scmd) +{ + pmcraid_err("Doing device reset due to an I/O command timeout.\n"); + return pmcraid_reset_device(scmd, + PMCRAID_INTERNAL_TIMEOUT, + RESET_DEVICE_LUN); +} + +static int pmcraid_eh_bus_reset_handler(struct scsi_cmnd *scmd) +{ + pmcraid_err("Doing bus reset due to an I/O command timeout.\n"); + return pmcraid_reset_device(scmd, + PMCRAID_RESET_BUS_TIMEOUT, + RESET_DEVICE_BUS); +} + +static int pmcraid_eh_target_reset_handler(struct scsi_cmnd *scmd) +{ + pmcraid_err("Doing target reset due to an I/O command timeout.\n"); + return pmcraid_reset_device(scmd, + PMCRAID_INTERNAL_TIMEOUT, + RESET_DEVICE_TARGET); +} + +/** + * pmcraid_eh_host_reset_handler - adapter reset handler callback + * + * @scmd: pointer to scsi_cmd that was sent to a resource of adapter + * + * Initiates adapter reset to bring it up to operational state + * + * Return value + * SUCCESS or FAILED + */ +static int pmcraid_eh_host_reset_handler(struct scsi_cmnd *scmd) +{ + unsigned long interval = 10000; /* 10 seconds interval */ + int waits = jiffies_to_msecs(PMCRAID_RESET_HOST_TIMEOUT) / interval; + struct pmcraid_instance *pinstance = + (struct pmcraid_instance *)(scmd->device->host->hostdata); + + + /* wait for an additional 150 seconds just in case firmware could come + * up and if it could complete all the pending commands excluding the + * two HCAM (CCN and LDN). + */ + while (waits--) { + if (atomic_read(&pinstance->outstanding_cmds) <= + PMCRAID_MAX_HCAM_CMD) + return SUCCESS; + msleep(interval); + } + + dev_err(&pinstance->pdev->dev, + "Adapter being reset due to an I/O command timeout.\n"); + return pmcraid_reset_bringup(pinstance) == 0 ? SUCCESS : FAILED; +} + +/** + * pmcraid_task_attributes - Translate SPI Q-Tags to task attributes + * @scsi_cmd: scsi command struct + * + * Return value + * number of tags or 0 if the task is not tagged + */ +static u8 pmcraid_task_attributes(struct scsi_cmnd *scsi_cmd) +{ + char tag[2]; + u8 rc = 0; + + if (scsi_populate_tag_msg(scsi_cmd, tag)) { + switch (tag[0]) { + case MSG_SIMPLE_TAG: + rc = TASK_TAG_SIMPLE; + break; + case MSG_HEAD_TAG: + rc = TASK_TAG_QUEUE_HEAD; + break; + case MSG_ORDERED_TAG: + rc = TASK_TAG_ORDERED; + break; + }; + } + + return rc; +} + + +/** + * pmcraid_init_ioadls - initializes IOADL related fields in IOARCB + * @cmd: pmcraid command struct + * @sgcount: count of scatter-gather elements + * + * Return value + * returns pointer pmcraid_ioadl_desc, initialized to point to internal + * or external IOADLs + */ +struct pmcraid_ioadl_desc * +pmcraid_init_ioadls(struct pmcraid_cmd *cmd, int sgcount) +{ + struct pmcraid_ioadl_desc *ioadl; + struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb; + int ioadl_count = 0; + + if (ioarcb->add_cmd_param_length) + ioadl_count = DIV_ROUND_UP(ioarcb->add_cmd_param_length, 16); + ioarcb->ioadl_length = + sizeof(struct pmcraid_ioadl_desc) * sgcount; + + if ((sgcount + ioadl_count) > (ARRAY_SIZE(ioarcb->add_data.u.ioadl))) { + /* external ioadls start at offset 0x80 from control_block + * structure, re-using 24 out of 27 ioadls part of IOARCB. + * It is necessary to indicate to firmware that driver is + * using ioadls to be treated as external to IOARCB. + */ + ioarcb->ioarcb_bus_addr &= ~(0x1FULL); + ioarcb->ioadl_bus_addr = + cpu_to_le64((cmd->ioa_cb_bus_addr) + + offsetof(struct pmcraid_ioarcb, + add_data.u.ioadl[3])); + ioadl = &ioarcb->add_data.u.ioadl[3]; + } else { + ioarcb->ioadl_bus_addr = + cpu_to_le64((cmd->ioa_cb_bus_addr) + + offsetof(struct pmcraid_ioarcb, + add_data.u.ioadl[ioadl_count])); + + ioadl = &ioarcb->add_data.u.ioadl[ioadl_count]; + ioarcb->ioarcb_bus_addr |= + DIV_ROUND_CLOSEST(sgcount + ioadl_count, 8); + } + + return ioadl; +} + +/** + * pmcraid_build_ioadl - Build a scatter/gather list and map the buffer + * @pinstance: pointer to adapter instance structure + * @cmd: pmcraid command struct + * + * This function is invoked by queuecommand entry point while sending a command + * to firmware. This builds ioadl descriptors and sets up ioarcb fields. + * + * Return value: + * 0 on success or -1 on failure + */ +static int pmcraid_build_ioadl( + struct pmcraid_instance *pinstance, + struct pmcraid_cmd *cmd +) +{ + int i, nseg; + struct scatterlist *sglist; + + struct scsi_cmnd *scsi_cmd = cmd->scsi_cmd; + struct pmcraid_ioarcb *ioarcb = &(cmd->ioa_cb->ioarcb); + struct pmcraid_ioadl_desc *ioadl = ioarcb->add_data.u.ioadl; + + u32 length = scsi_bufflen(scsi_cmd); + + if (!length) + return 0; + + nseg = scsi_dma_map(scsi_cmd); + + if (nseg < 0) { + dev_err(&pinstance->pdev->dev, "scsi_map_dma failed!\n"); + return -1; + } else if (nseg > PMCRAID_MAX_IOADLS) { + scsi_dma_unmap(scsi_cmd); + dev_err(&pinstance->pdev->dev, + "sg count is (%d) more than allowed!\n", nseg); + return -1; + } + + /* Initialize IOARCB data transfer length fields */ + if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) + ioarcb->request_flags0 |= TRANSFER_DIR_WRITE; + + ioarcb->request_flags0 |= NO_LINK_DESCS; + ioarcb->data_transfer_length = cpu_to_le32(length); + ioadl = pmcraid_init_ioadls(cmd, nseg); + + /* Initialize IOADL descriptor addresses */ + scsi_for_each_sg(scsi_cmd, sglist, nseg, i) { + ioadl[i].data_len = cpu_to_le32(sg_dma_len(sglist)); + ioadl[i].address = cpu_to_le64(sg_dma_address(sglist)); + ioadl[i].flags = 0; + } + /* setup last descriptor */ + ioadl[i - 1].flags = cpu_to_le32(IOADL_FLAGS_LAST_DESC); + + return 0; +} + +/** + * pmcraid_free_sglist - Frees an allocated SG buffer list + * @sglist: scatter/gather list pointer + * + * Free a DMA'able memory previously allocated with pmcraid_alloc_sglist + * + * Return value: + * none + */ +static void pmcraid_free_sglist(struct pmcraid_sglist *sglist) +{ + int i; + + for (i = 0; i < sglist->num_sg; i++) + __free_pages(sg_page(&(sglist->scatterlist[i])), + sglist->order); + + kfree(sglist); +} + +/** + * pmcraid_alloc_sglist - Allocates memory for a SG list + * @buflen: buffer length + * + * Allocates a DMA'able buffer in chunks and assembles a scatter/gather + * list. + * + * Return value + * pointer to sglist / NULL on failure + */ +static struct pmcraid_sglist *pmcraid_alloc_sglist(int buflen) +{ + struct pmcraid_sglist *sglist; + struct scatterlist *scatterlist; + struct page *page; + int num_elem, i, j; + int sg_size; + int order; + int bsize_elem; + + sg_size = buflen / (PMCRAID_MAX_IOADLS - 1); + order = (sg_size > 0) ? get_order(sg_size) : 0; + bsize_elem = PAGE_SIZE * (1 << order); + + /* Determine the actual number of sg entries needed */ + if (buflen % bsize_elem) + num_elem = (buflen / bsize_elem) + 1; + else + num_elem = buflen / bsize_elem; + + /* Allocate a scatter/gather list for the DMA */ + sglist = kzalloc(sizeof(struct pmcraid_sglist) + + (sizeof(struct scatterlist) * (num_elem - 1)), + GFP_KERNEL); + + if (sglist == NULL) + return NULL; + + scatterlist = sglist->scatterlist; + sg_init_table(scatterlist, num_elem); + sglist->order = order; + sglist->num_sg = num_elem; + sg_size = buflen; + + for (i = 0; i < num_elem; i++) { + page = alloc_pages(GFP_KERNEL|GFP_DMA, order); + if (!page) { + for (j = i - 1; j >= 0; j--) + __free_pages(sg_page(&scatterlist[j]), order); + kfree(sglist); + return NULL; + } + + sg_set_page(&scatterlist[i], page, + sg_size < bsize_elem ? sg_size : bsize_elem, 0); + sg_size -= bsize_elem; + } + + return sglist; +} + +/** + * pmcraid_copy_sglist - Copy user buffer to kernel buffer's SG list + * @sglist: scatter/gather list pointer + * @buffer: buffer pointer + * @len: buffer length + * @direction: data transfer direction + * + * Copy a user buffer into a buffer allocated by pmcraid_alloc_sglist + * + * Return value: + * 0 on success / other on failure + */ +static int pmcraid_copy_sglist( + struct pmcraid_sglist *sglist, + unsigned long buffer, + u32 len, + int direction +) +{ + struct scatterlist *scatterlist; + void *kaddr; + int bsize_elem; + int i; + int rc = 0; + + /* Determine the actual number of bytes per element */ + bsize_elem = PAGE_SIZE * (1 << sglist->order); + + scatterlist = sglist->scatterlist; + + for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) { + struct page *page = sg_page(&scatterlist[i]); + + kaddr = kmap(page); + if (direction == DMA_TO_DEVICE) + rc = __copy_from_user(kaddr, + (void *)buffer, + bsize_elem); + else + rc = __copy_to_user((void *)buffer, kaddr, bsize_elem); + + kunmap(page); + + if (rc) { + pmcraid_err("failed to copy user data into sg list\n"); + return -EFAULT; + } + + scatterlist[i].length = bsize_elem; + } + + if (len % bsize_elem) { + struct page *page = sg_page(&scatterlist[i]); + + kaddr = kmap(page); + + if (direction == DMA_TO_DEVICE) + rc = __copy_from_user(kaddr, + (void *)buffer, + len % bsize_elem); + else + rc = __copy_to_user((void *)buffer, + kaddr, + len % bsize_elem); + + kunmap(page); + + scatterlist[i].length = len % bsize_elem; + } + + if (rc) { + pmcraid_err("failed to copy user data into sg list\n"); + rc = -EFAULT; + } + + return rc; +} + +/** + * pmcraid_queuecommand - Queue a mid-layer request + * @scsi_cmd: scsi command struct + * @done: done function + * + * This function queues a request generated by the mid-layer. Midlayer calls + * this routine within host->lock. Some of the functions called by queuecommand + * would use cmd block queue locks (free_pool_lock and pending_pool_lock) + * + * Return value: + * 0 on success + * SCSI_MLQUEUE_DEVICE_BUSY if device is busy + * SCSI_MLQUEUE_HOST_BUSY if host is busy + */ +static int pmcraid_queuecommand( + struct scsi_cmnd *scsi_cmd, + void (*done) (struct scsi_cmnd *) +) +{ + struct pmcraid_instance *pinstance; + struct pmcraid_resource_entry *res; + struct pmcraid_ioarcb *ioarcb; + struct pmcraid_cmd *cmd; + int rc = 0; + + pinstance = + (struct pmcraid_instance *)scsi_cmd->device->host->hostdata; + + scsi_cmd->scsi_done = done; + res = scsi_cmd->device->hostdata; + scsi_cmd->result = (DID_OK << 16); + + /* if adapter is marked as dead, set result to DID_NO_CONNECT complete + * the command + */ + if (pinstance->ioa_state == IOA_STATE_DEAD) { + pmcraid_info("IOA is dead, but queuecommand is scheduled\n"); + scsi_cmd->result = (DID_NO_CONNECT << 16); + scsi_cmd->scsi_done(scsi_cmd); + return 0; + } + + /* If IOA reset is in progress, can't queue the commands */ + if (pinstance->ioa_reset_in_progress) + return SCSI_MLQUEUE_HOST_BUSY; + + /* initialize the command and IOARCB to be sent to IOA */ + cmd = pmcraid_get_free_cmd(pinstance); + + if (cmd == NULL) { + pmcraid_err("free command block is not available\n"); + return SCSI_MLQUEUE_HOST_BUSY; + } + + cmd->scsi_cmd = scsi_cmd; + ioarcb = &(cmd->ioa_cb->ioarcb); + memcpy(ioarcb->cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len); + ioarcb->resource_handle = res->cfg_entry.resource_handle; + ioarcb->request_type = REQ_TYPE_SCSI; + + cmd->cmd_done = pmcraid_io_done; + + if (RES_IS_GSCSI(res->cfg_entry) || RES_IS_VSET(res->cfg_entry)) { + if (scsi_cmd->underflow == 0) + ioarcb->request_flags0 |= INHIBIT_UL_CHECK; + + if (res->sync_reqd) { + ioarcb->request_flags0 |= SYNC_COMPLETE; + res->sync_reqd = 0; + } + + ioarcb->request_flags0 |= NO_LINK_DESCS; + ioarcb->request_flags1 |= pmcraid_task_attributes(scsi_cmd); + + if (RES_IS_GSCSI(res->cfg_entry)) + ioarcb->request_flags1 |= DELAY_AFTER_RESET; + } + + rc = pmcraid_build_ioadl(pinstance, cmd); + + pmcraid_info("command (%d) CDB[0] = %x for %x:%x:%x:%x\n", + le32_to_cpu(ioarcb->response_handle) >> 2, + scsi_cmd->cmnd[0], pinstance->host->unique_id, + RES_IS_VSET(res->cfg_entry) ? PMCRAID_VSET_BUS_ID : + PMCRAID_PHYS_BUS_ID, + RES_IS_VSET(res->cfg_entry) ? + res->cfg_entry.unique_flags1 : + RES_TARGET(res->cfg_entry.resource_address), + RES_LUN(res->cfg_entry.resource_address)); + + if (likely(rc == 0)) { + _pmcraid_fire_command(cmd); + } else { + pmcraid_err("queuecommand could not build ioadl\n"); + pmcraid_return_cmd(cmd); + rc = SCSI_MLQUEUE_HOST_BUSY; + } + + return rc; +} + +/** + * pmcraid_open -char node "open" entry, allowed only users with admin access + */ +static int pmcraid_chr_open(struct inode *inode, struct file *filep) +{ + struct pmcraid_instance *pinstance; + + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + + /* Populate adapter instance * pointer for use by ioctl */ + pinstance = container_of(inode->i_cdev, struct pmcraid_instance, cdev); + filep->private_data = pinstance; + + return 0; +} + +/** + * pmcraid_release - char node "release" entry point + */ +static int pmcraid_chr_release(struct inode *inode, struct file *filep) +{ + struct pmcraid_instance *pinstance = + ((struct pmcraid_instance *)filep->private_data); + + filep->private_data = NULL; + fasync_helper(-1, filep, 0, &pinstance->aen_queue); + + return 0; +} + +/** + * pmcraid_fasync - Async notifier registration from applications + * + * This function adds the calling process to a driver global queue. When an + * event occurs, SIGIO will be sent to all processes in this queue. + */ +static int pmcraid_chr_fasync(int fd, struct file *filep, int mode) +{ + struct pmcraid_instance *pinstance; + int rc; + + pinstance = (struct pmcraid_instance *)filep->private_data; + mutex_lock(&pinstance->aen_queue_lock); + rc = fasync_helper(fd, filep, mode, &pinstance->aen_queue); + mutex_unlock(&pinstance->aen_queue_lock); + + return rc; +} + + +/** + * pmcraid_build_passthrough_ioadls - builds SG elements for passthrough + * commands sent over IOCTL interface + * + * @cmd : pointer to struct pmcraid_cmd + * @buflen : length of the request buffer + * @direction : data transfer direction + * + * Return value + * 0 on sucess, non-zero error code on failure + */ +static int pmcraid_build_passthrough_ioadls( + struct pmcraid_cmd *cmd, + int buflen, + int direction +) +{ + struct pmcraid_sglist *sglist = NULL; + struct scatterlist *sg = NULL; + struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb; + struct pmcraid_ioadl_desc *ioadl; + int i; + + sglist = pmcraid_alloc_sglist(buflen); + + if (!sglist) { + pmcraid_err("can't allocate memory for passthrough SGls\n"); + return -ENOMEM; + } + + sglist->num_dma_sg = pci_map_sg(cmd->drv_inst->pdev, + sglist->scatterlist, + sglist->num_sg, direction); + + if (!sglist->num_dma_sg || sglist->num_dma_sg > PMCRAID_MAX_IOADLS) { + dev_err(&cmd->drv_inst->pdev->dev, + "Failed to map passthrough buffer!\n"); + pmcraid_free_sglist(sglist); + return -EIO; + } + + cmd->sglist = sglist; + ioarcb->request_flags0 |= NO_LINK_DESCS; + + ioadl = pmcraid_init_ioadls(cmd, sglist->num_dma_sg); + + /* Initialize IOADL descriptor addresses */ + for_each_sg(sglist->scatterlist, sg, sglist->num_dma_sg, i) { + ioadl[i].data_len = cpu_to_le32(sg_dma_len(sg)); + ioadl[i].address = cpu_to_le64(sg_dma_address(sg)); + ioadl[i].flags = 0; + } + + /* setup the last descriptor */ + ioadl[i - 1].flags = cpu_to_le32(IOADL_FLAGS_LAST_DESC); + + return 0; +} + + +/** + * pmcraid_release_passthrough_ioadls - release passthrough ioadls + * + * @cmd: pointer to struct pmcraid_cmd for which ioadls were allocated + * @buflen: size of the request buffer + * @direction: data transfer direction + * + * Return value + * 0 on sucess, non-zero error code on failure + */ +static void pmcraid_release_passthrough_ioadls( + struct pmcraid_cmd *cmd, + int buflen, + int direction +) +{ + struct pmcraid_sglist *sglist = cmd->sglist; + + if (buflen > 0) { + pci_unmap_sg(cmd->drv_inst->pdev, + sglist->scatterlist, + sglist->num_sg, + direction); + pmcraid_free_sglist(sglist); + cmd->sglist = NULL; + } +} + +/** + * pmcraid_ioctl_passthrough - handling passthrough IOCTL commands + * + * @pinstance: pointer to adapter instance structure + * @cmd: ioctl code + * @arg: pointer to pmcraid_passthrough_buffer user buffer + * + * Return value + * 0 on sucess, non-zero error code on failure + */ +static long pmcraid_ioctl_passthrough( + struct pmcraid_instance *pinstance, + unsigned int ioctl_cmd, + unsigned int buflen, + unsigned long arg +) +{ + struct pmcraid_passthrough_ioctl_buffer *buffer; + struct pmcraid_ioarcb *ioarcb; + struct pmcraid_cmd *cmd; + struct pmcraid_cmd *cancel_cmd; + unsigned long request_buffer; + unsigned long request_offset; + unsigned long lock_flags; + int request_size; + int buffer_size; + u8 access, direction; + int rc = 0; + + /* If IOA reset is in progress, wait 10 secs for reset to complete */ + if (pinstance->ioa_reset_in_progress) { + rc = wait_event_interruptible_timeout( + pinstance->reset_wait_q, + !pinstance->ioa_reset_in_progress, + msecs_to_jiffies(10000)); + + if (!rc) + return -ETIMEDOUT; + else if (rc < 0) + return -ERESTARTSYS; + } + + /* If adapter is not in operational state, return error */ + if (pinstance->ioa_state != IOA_STATE_OPERATIONAL) { + pmcraid_err("IOA is not operational\n"); + return -ENOTTY; + } + + buffer_size = sizeof(struct pmcraid_passthrough_ioctl_buffer); + buffer = kmalloc(buffer_size, GFP_KERNEL); + + if (!buffer) { + pmcraid_err("no memory for passthrough buffer\n"); + return -ENOMEM; + } + + request_offset = + offsetof(struct pmcraid_passthrough_ioctl_buffer, request_buffer); + + request_buffer = arg + request_offset; + + rc = __copy_from_user(buffer, + (struct pmcraid_passthrough_ioctl_buffer *) arg, + sizeof(struct pmcraid_passthrough_ioctl_buffer)); + if (rc) { + pmcraid_err("ioctl: can't copy passthrough buffer\n"); + rc = -EFAULT; + goto out_free_buffer; + } + + request_size = buffer->ioarcb.data_transfer_length; + + if (buffer->ioarcb.request_flags0 & TRANSFER_DIR_WRITE) { + access = VERIFY_READ; + direction = DMA_TO_DEVICE; + } else { + access = VERIFY_WRITE; + direction = DMA_FROM_DEVICE; + } + + if (request_size > 0) { + rc = access_ok(access, arg, request_offset + request_size); + + if (!rc) { + rc = -EFAULT; + goto out_free_buffer; + } + } + + /* check if we have any additional command parameters */ + if (buffer->ioarcb.add_cmd_param_length > PMCRAID_ADD_CMD_PARAM_LEN) { + rc = -EINVAL; + goto out_free_buffer; + } + + cmd = pmcraid_get_free_cmd(pinstance); + + if (!cmd) { + pmcraid_err("free command block is not available\n"); + rc = -ENOMEM; + goto out_free_buffer; + } + + cmd->scsi_cmd = NULL; + ioarcb = &(cmd->ioa_cb->ioarcb); + + /* Copy the user-provided IOARCB stuff field by field */ + ioarcb->resource_handle = buffer->ioarcb.resource_handle; + ioarcb->data_transfer_length = buffer->ioarcb.data_transfer_length; + ioarcb->cmd_timeout = buffer->ioarcb.cmd_timeout; + ioarcb->request_type = buffer->ioarcb.request_type; + ioarcb->request_flags0 = buffer->ioarcb.request_flags0; + ioarcb->request_flags1 = buffer->ioarcb.request_flags1; + memcpy(ioarcb->cdb, buffer->ioarcb.cdb, PMCRAID_MAX_CDB_LEN); + + if (buffer->ioarcb.add_cmd_param_length) { + ioarcb->add_cmd_param_length = + buffer->ioarcb.add_cmd_param_length; + ioarcb->add_cmd_param_offset = + buffer->ioarcb.add_cmd_param_offset; + memcpy(ioarcb->add_data.u.add_cmd_params, + buffer->ioarcb.add_data.u.add_cmd_params, + buffer->ioarcb.add_cmd_param_length); + } + + if (request_size) { + rc = pmcraid_build_passthrough_ioadls(cmd, + request_size, + direction); + if (rc) { + pmcraid_err("couldn't build passthrough ioadls\n"); + goto out_free_buffer; + } + } + + /* If data is being written into the device, copy the data from user + * buffers + */ + if (direction == DMA_TO_DEVICE && request_size > 0) { + rc = pmcraid_copy_sglist(cmd->sglist, + request_buffer, + request_size, + direction); + if (rc) { + pmcraid_err("failed to copy user buffer\n"); + goto out_free_sglist; + } + } + + /* passthrough ioctl is a blocking command so, put the user to sleep + * until timeout. Note that a timeout value of 0 means, do timeout. + */ + cmd->cmd_done = pmcraid_internal_done; + init_completion(&cmd->wait_for_completion); + cmd->completion_req = 1; + + pmcraid_info("command(%d) (CDB[0] = %x) for %x\n", + le32_to_cpu(cmd->ioa_cb->ioarcb.response_handle) >> 2, + cmd->ioa_cb->ioarcb.cdb[0], + le32_to_cpu(cmd->ioa_cb->ioarcb.resource_handle)); + + spin_lock_irqsave(pinstance->host->host_lock, lock_flags); + _pmcraid_fire_command(cmd); + spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags); + + /* If command timeout is specified put caller to wait till that time, + * otherwise it would be blocking wait. If command gets timed out, it + * will be aborted. + */ + if (buffer->ioarcb.cmd_timeout == 0) { + wait_for_completion(&cmd->wait_for_completion); + } else if (!wait_for_completion_timeout( + &cmd->wait_for_completion, + msecs_to_jiffies(buffer->ioarcb.cmd_timeout * 1000))) { + + pmcraid_info("aborting cmd %d (CDB[0] = %x) due to timeout\n", + le32_to_cpu(cmd->ioa_cb->ioarcb.response_handle >> 2), + cmd->ioa_cb->ioarcb.cdb[0]); + + rc = -ETIMEDOUT; + spin_lock_irqsave(pinstance->host->host_lock, lock_flags); + cancel_cmd = pmcraid_abort_cmd(cmd); + spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags); + + if (cancel_cmd) { + wait_for_completion(&cancel_cmd->wait_for_completion); + pmcraid_return_cmd(cancel_cmd); + } + + goto out_free_sglist; + } + + /* If the command failed for any reason, copy entire IOASA buffer and + * return IOCTL success. If copying IOASA to user-buffer fails, return + * EFAULT + */ + if (le32_to_cpu(cmd->ioa_cb->ioasa.ioasc)) { + + void *ioasa = + (void *)(arg + + offsetof(struct pmcraid_passthrough_ioctl_buffer, ioasa)); + + pmcraid_info("command failed with %x\n", + le32_to_cpu(cmd->ioa_cb->ioasa.ioasc)); + if (copy_to_user(ioasa, &cmd->ioa_cb->ioasa, + sizeof(struct pmcraid_ioasa))) { + pmcraid_err("failed to copy ioasa buffer to user\n"); + rc = -EFAULT; + } + } + /* If the data transfer was from device, copy the data onto user + * buffers + */ + else if (direction == DMA_FROM_DEVICE && request_size > 0) { + rc = pmcraid_copy_sglist(cmd->sglist, + request_buffer, + request_size, + direction); + if (rc) { + pmcraid_err("failed to copy user buffer\n"); + rc = -EFAULT; + } + } + +out_free_sglist: + pmcraid_release_passthrough_ioadls(cmd, request_size, direction); + pmcraid_return_cmd(cmd); + +out_free_buffer: + kfree(buffer); + + return rc; +} + + + + +/** + * pmcraid_ioctl_driver - ioctl handler for commands handled by driver itself + * + * @pinstance: pointer to adapter instance structure + * @cmd: ioctl command passed in + * @buflen: length of user_buffer + * @user_buffer: user buffer pointer + * + * Return Value + * 0 in case of success, otherwise appropriate error code + */ +static long pmcraid_ioctl_driver( + struct pmcraid_instance *pinstance, + unsigned int cmd, + unsigned int buflen, + void __user *user_buffer +) +{ + int rc = -ENOSYS; + + if (!access_ok(VERIFY_READ, user_buffer, _IOC_SIZE(cmd))) { + pmcraid_err("ioctl_driver: access fault in request buffer \n"); + return -EFAULT; + } + + switch (cmd) { + case PMCRAID_IOCTL_RESET_ADAPTER: + pmcraid_reset_bringup(pinstance); + rc = 0; + break; + + default: + break; + } + + return rc; +} + +/** + * pmcraid_check_ioctl_buffer - check for proper access to user buffer + * + * @cmd: ioctl command + * @arg: user buffer + * @hdr: pointer to kernel memory for pmcraid_ioctl_header + * + * Return Value + * negetive error code if there are access issues, otherwise zero. + * Upon success, returns ioctl header copied out of user buffer. + */ + +static int pmcraid_check_ioctl_buffer( + int cmd, + void __user *arg, + struct pmcraid_ioctl_header *hdr +) +{ + int rc = 0; + int access = VERIFY_READ; + + if (copy_from_user(hdr, arg, sizeof(struct pmcraid_ioctl_header))) { + pmcraid_err("couldn't copy ioctl header from user buffer\n"); + return -EFAULT; + } + + /* check for valid driver signature */ + rc = memcmp(hdr->signature, + PMCRAID_IOCTL_SIGNATURE, + sizeof(hdr->signature)); + if (rc) { + pmcraid_err("signature verification failed\n"); + return -EINVAL; + } + + /* buffer length can't be negetive */ + if (hdr->buffer_length < 0) { + pmcraid_err("ioctl: invalid buffer length specified\n"); + return -EINVAL; + } + + /* check for appropriate buffer access */ + if ((_IOC_DIR(cmd) & _IOC_READ) == _IOC_READ) + access = VERIFY_WRITE; + + rc = access_ok(access, + (arg + sizeof(struct pmcraid_ioctl_header)), + hdr->buffer_length); + if (!rc) { + pmcraid_err("access failed for user buffer of size %d\n", + hdr->buffer_length); + return -EFAULT; + } + + return 0; +} + +/** + * pmcraid_ioctl - char node ioctl entry point + */ +static long pmcraid_chr_ioctl( + struct file *filep, + unsigned int cmd, + unsigned long arg +) +{ + struct pmcraid_instance *pinstance = NULL; + struct pmcraid_ioctl_header *hdr = NULL; + int retval = -ENOTTY; + + hdr = kmalloc(GFP_KERNEL, sizeof(struct pmcraid_ioctl_header)); + + if (!hdr) { + pmcraid_err("faile to allocate memory for ioctl header\n"); + return -ENOMEM; + } + + retval = pmcraid_check_ioctl_buffer(cmd, (void *)arg, hdr); + + if (retval) { + pmcraid_info("chr_ioctl: header check failed\n"); + kfree(hdr); + return retval; + } + + pinstance = (struct pmcraid_instance *)filep->private_data; + + if (!pinstance) { + pmcraid_info("adapter instance is not found\n"); + kfree(hdr); + return -ENOTTY; + } + + switch (_IOC_TYPE(cmd)) { + + case PMCRAID_PASSTHROUGH_IOCTL: + /* If ioctl code is to download microcode, we need to block + * mid-layer requests. + */ + if (cmd == PMCRAID_IOCTL_DOWNLOAD_MICROCODE) + scsi_block_requests(pinstance->host); + + retval = pmcraid_ioctl_passthrough(pinstance, + cmd, + hdr->buffer_length, + arg); + + if (cmd == PMCRAID_IOCTL_DOWNLOAD_MICROCODE) + scsi_unblock_requests(pinstance->host); + break; + + case PMCRAID_DRIVER_IOCTL: + arg += sizeof(struct pmcraid_ioctl_header); + retval = pmcraid_ioctl_driver(pinstance, + cmd, + hdr->buffer_length, + (void __user *)arg); + break; + + default: + retval = -ENOTTY; + break; + } + + kfree(hdr); + + return retval; +} + +/** + * File operations structure for management interface + */ +static const struct file_operations pmcraid_fops = { + .owner = THIS_MODULE, + .open = pmcraid_chr_open, + .release = pmcraid_chr_release, + .fasync = pmcraid_chr_fasync, + .unlocked_ioctl = pmcraid_chr_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = pmcraid_chr_ioctl, +#endif +}; + + + + +/** + * pmcraid_show_log_level - Display adapter's error logging level + * @dev: class device struct + * @buf: buffer + * + * Return value: + * number of bytes printed to buffer + */ +static ssize_t pmcraid_show_log_level( + struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct pmcraid_instance *pinstance = + (struct pmcraid_instance *)shost->hostdata; + return snprintf(buf, PAGE_SIZE, "%d\n", pinstance->current_log_level); +} + +/** + * pmcraid_store_log_level - Change the adapter's error logging level + * @dev: class device struct + * @buf: buffer + * @count: not used + * + * Return value: + * number of bytes printed to buffer + */ +static ssize_t pmcraid_store_log_level( + struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count +) +{ + struct Scsi_Host *shost; + struct pmcraid_instance *pinstance; + unsigned long val; + + if (strict_strtoul(buf, 10, &val)) + return -EINVAL; + /* log-level should be from 0 to 2 */ + if (val > 2) + return -EINVAL; + + shost = class_to_shost(dev); + pinstance = (struct pmcraid_instance *)shost->hostdata; + pinstance->current_log_level = val; + + return strlen(buf); +} + +static struct device_attribute pmcraid_log_level_attr = { + .attr = { + .name = "log_level", + .mode = S_IRUGO | S_IWUSR, + }, + .show = pmcraid_show_log_level, + .store = pmcraid_store_log_level, +}; + +/** + * pmcraid_show_drv_version - Display driver version + * @dev: class device struct + * @buf: buffer + * + * Return value: + * number of bytes printed to buffer + */ +static ssize_t pmcraid_show_drv_version( + struct device *dev, + struct device_attribute *attr, + char *buf +) +{ + return snprintf(buf, PAGE_SIZE, "version: %s, build date: %s\n", + PMCRAID_DRIVER_VERSION, PMCRAID_DRIVER_DATE); +} + +static struct device_attribute pmcraid_driver_version_attr = { + .attr = { + .name = "drv_version", + .mode = S_IRUGO, + }, + .show = pmcraid_show_drv_version, +}; + +/** + * pmcraid_show_io_adapter_id - Display driver assigned adapter id + * @dev: class device struct + * @buf: buffer + * + * Return value: + * number of bytes printed to buffer + */ +static ssize_t pmcraid_show_adapter_id( + struct device *dev, + struct device_attribute *attr, + char *buf +) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct pmcraid_instance *pinstance = + (struct pmcraid_instance *)shost->hostdata; + u32 adapter_id = (pinstance->pdev->bus->number << 8) | + pinstance->pdev->devfn; + u32 aen_group = pmcraid_event_family.id; + + return snprintf(buf, PAGE_SIZE, + "adapter id: %d\nminor: %d\naen group: %d\n", + adapter_id, MINOR(pinstance->cdev.dev), aen_group); +} + +static struct device_attribute pmcraid_adapter_id_attr = { + .attr = { + .name = "adapter_id", + .mode = S_IRUGO | S_IWUSR, + }, + .show = pmcraid_show_adapter_id, +}; + +static struct device_attribute *pmcraid_host_attrs[] = { + &pmcraid_log_level_attr, + &pmcraid_driver_version_attr, + &pmcraid_adapter_id_attr, + NULL, +}; + + +/* host template structure for pmcraid driver */ +static struct scsi_host_template pmcraid_host_template = { + .module = THIS_MODULE, + .name = PMCRAID_DRIVER_NAME, + .queuecommand = pmcraid_queuecommand, + .eh_abort_handler = pmcraid_eh_abort_handler, + .eh_bus_reset_handler = pmcraid_eh_bus_reset_handler, + .eh_target_reset_handler = pmcraid_eh_target_reset_handler, + .eh_device_reset_handler = pmcraid_eh_device_reset_handler, + .eh_host_reset_handler = pmcraid_eh_host_reset_handler, + + .slave_alloc = pmcraid_slave_alloc, + .slave_configure = pmcraid_slave_configure, + .slave_destroy = pmcraid_slave_destroy, + .change_queue_depth = pmcraid_change_queue_depth, + .change_queue_type = pmcraid_change_queue_type, + .can_queue = PMCRAID_MAX_IO_CMD, + .this_id = -1, + .sg_tablesize = PMCRAID_MAX_IOADLS, + .max_sectors = PMCRAID_IOA_MAX_SECTORS, + .cmd_per_lun = PMCRAID_MAX_CMD_PER_LUN, + .use_clustering = ENABLE_CLUSTERING, + .shost_attrs = pmcraid_host_attrs, + .proc_name = PMCRAID_DRIVER_NAME +}; + +/** + * pmcraid_isr_common - Common interrupt handler routine + * + * @pinstance: pointer to adapter instance + * @intrs: active interrupts (contents of ioa_host_interrupt register) + * @hrrq_id: Host RRQ index + * + * Return Value + * none + */ +static void pmcraid_isr_common( + struct pmcraid_instance *pinstance, + u32 intrs, + int hrrq_id +) +{ + u32 intrs_clear = + (intrs & INTRS_CRITICAL_OP_IN_PROGRESS) ? intrs + : INTRS_HRRQ_VALID; + iowrite32(intrs_clear, + pinstance->int_regs.ioa_host_interrupt_clr_reg); + intrs = ioread32(pinstance->int_regs.ioa_host_interrupt_reg); + + /* hrrq valid bit was set, schedule tasklet to handle the response */ + if (intrs_clear == INTRS_HRRQ_VALID) + tasklet_schedule(&(pinstance->isr_tasklet[hrrq_id])); +} + +/** + * pmcraid_isr - implements interrupt handling routine + * + * @irq: interrupt vector number + * @dev_id: pointer hrrq_vector + * + * Return Value + * IRQ_HANDLED if interrupt is handled or IRQ_NONE if ignored + */ +static irqreturn_t pmcraid_isr(int irq, void *dev_id) +{ + struct pmcraid_isr_param *hrrq_vector; + struct pmcraid_instance *pinstance; + unsigned long lock_flags; + u32 intrs; + + /* In case of legacy interrupt mode where interrupts are shared across + * isrs, it may be possible that the current interrupt is not from IOA + */ + if (!dev_id) { + printk(KERN_INFO "%s(): NULL host pointer\n", __func__); + return IRQ_NONE; + } + + hrrq_vector = (struct pmcraid_isr_param *)dev_id; + pinstance = hrrq_vector->drv_inst; + + /* Acquire the lock (currently host_lock) while processing interrupts. + * This interval is small as most of the response processing is done by + * tasklet without the lock. + */ + spin_lock_irqsave(pinstance->host->host_lock, lock_flags); + intrs = pmcraid_read_interrupts(pinstance); + + if (unlikely((intrs & PMCRAID_PCI_INTERRUPTS) == 0)) { + spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags); + return IRQ_NONE; + } + + /* Any error interrupts including unit_check, initiate IOA reset. + * In case of unit check indicate to reset_sequence that IOA unit + * checked and prepare for a dump during reset sequence + */ + if (intrs & PMCRAID_ERROR_INTERRUPTS) { + + if (intrs & INTRS_IOA_UNIT_CHECK) + pinstance->ioa_unit_check = 1; + + iowrite32(intrs, + pinstance->int_regs.ioa_host_interrupt_clr_reg); + pmcraid_err("ISR: error interrupts: %x initiating reset\n", + intrs); + intrs = ioread32(pinstance->int_regs.ioa_host_interrupt_reg); + pmcraid_initiate_reset(pinstance); + } else { + pmcraid_isr_common(pinstance, intrs, hrrq_vector->hrrq_id); + } + + spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags); + + return IRQ_HANDLED; +} + + +/** + * pmcraid_worker_function - worker thread function + * + * @workp: pointer to struct work queue + * + * Return Value + * None + */ + +static void pmcraid_worker_function(struct work_struct *workp) +{ + struct pmcraid_instance *pinstance; + struct pmcraid_resource_entry *res; + struct pmcraid_resource_entry *temp; + struct scsi_device *sdev; + unsigned long lock_flags; + unsigned long host_lock_flags; + u8 bus, target, lun; + + pinstance = container_of(workp, struct pmcraid_instance, worker_q); + /* add resources only after host is added into system */ + if (!atomic_read(&pinstance->expose_resources)) + return; + + spin_lock_irqsave(&pinstance->resource_lock, lock_flags); + list_for_each_entry_safe(res, temp, &pinstance->used_res_q, queue) { + + if (res->change_detected == RES_CHANGE_DEL && res->scsi_dev) { + sdev = res->scsi_dev; + + /* host_lock must be held before calling + * scsi_device_get + */ + spin_lock_irqsave(pinstance->host->host_lock, + host_lock_flags); + if (!scsi_device_get(sdev)) { + spin_unlock_irqrestore( + pinstance->host->host_lock, + host_lock_flags); + pmcraid_info("deleting %x from midlayer\n", + res->cfg_entry.resource_address); + list_move_tail(&res->queue, + &pinstance->free_res_q); + spin_unlock_irqrestore( + &pinstance->resource_lock, + lock_flags); + scsi_remove_device(sdev); + scsi_device_put(sdev); + spin_lock_irqsave(&pinstance->resource_lock, + lock_flags); + res->change_detected = 0; + } else { + spin_unlock_irqrestore( + pinstance->host->host_lock, + host_lock_flags); + } + } + } + + list_for_each_entry(res, &pinstance->used_res_q, queue) { + + if (res->change_detected == RES_CHANGE_ADD) { + + if (!pmcraid_expose_resource(&res->cfg_entry)) + continue; + + if (RES_IS_VSET(res->cfg_entry)) { + bus = PMCRAID_VSET_BUS_ID; + target = res->cfg_entry.unique_flags1; + lun = PMCRAID_VSET_LUN_ID; + } else { + bus = PMCRAID_PHYS_BUS_ID; + target = + RES_TARGET( + res->cfg_entry.resource_address); + lun = RES_LUN(res->cfg_entry.resource_address); + } + + res->change_detected = 0; + spin_unlock_irqrestore(&pinstance->resource_lock, + lock_flags); + scsi_add_device(pinstance->host, bus, target, lun); + spin_lock_irqsave(&pinstance->resource_lock, + lock_flags); + } + } + + spin_unlock_irqrestore(&pinstance->resource_lock, lock_flags); +} + +/** + * pmcraid_tasklet_function - Tasklet function + * + * @instance: pointer to msix param structure + * + * Return Value + * None + */ +void pmcraid_tasklet_function(unsigned long instance) +{ + struct pmcraid_isr_param *hrrq_vector; + struct pmcraid_instance *pinstance; + unsigned long hrrq_lock_flags; + unsigned long pending_lock_flags; + unsigned long host_lock_flags; + spinlock_t *lockp; /* hrrq buffer lock */ + int id; + u32 intrs; + __le32 resp; + + hrrq_vector = (struct pmcraid_isr_param *)instance; + pinstance = hrrq_vector->drv_inst; + id = hrrq_vector->hrrq_id; + lockp = &(pinstance->hrrq_lock[id]); + intrs = pmcraid_read_interrupts(pinstance); + + /* If interrupts was as part of the ioa initialization, clear and mask + * it. Delete the timer and wakeup the reset engine to proceed with + * reset sequence + */ + if (intrs & INTRS_TRANSITION_TO_OPERATIONAL) { + iowrite32(INTRS_TRANSITION_TO_OPERATIONAL, + pinstance->int_regs.ioa_host_interrupt_mask_reg); + iowrite32(INTRS_TRANSITION_TO_OPERATIONAL, + pinstance->int_regs.ioa_host_interrupt_clr_reg); + + if (pinstance->reset_cmd != NULL) { + del_timer(&pinstance->reset_cmd->timer); + spin_lock_irqsave(pinstance->host->host_lock, + host_lock_flags); + pinstance->reset_cmd->cmd_done(pinstance->reset_cmd); + spin_unlock_irqrestore(pinstance->host->host_lock, + host_lock_flags); + } + return; + } + + /* loop through each of the commands responded by IOA. Each HRRQ buf is + * protected by its own lock. Traversals must be done within this lock + * as there may be multiple tasklets running on multiple CPUs. Note + * that the lock is held just for picking up the response handle and + * manipulating hrrq_curr/toggle_bit values. + */ + spin_lock_irqsave(lockp, hrrq_lock_flags); + + resp = le32_to_cpu(*(pinstance->hrrq_curr[id])); + + while ((resp & HRRQ_TOGGLE_BIT) == + pinstance->host_toggle_bit[id]) { + + int cmd_index = resp >> 2; + struct pmcraid_cmd *cmd = NULL; + + if (cmd_index < PMCRAID_MAX_CMD) { + cmd = pinstance->cmd_list[cmd_index]; + } else { + /* In case of invalid response handle, initiate IOA + * reset sequence. + */ + spin_unlock_irqrestore(lockp, hrrq_lock_flags); + + pmcraid_err("Invalid response %d initiating reset\n", + cmd_index); + + spin_lock_irqsave(pinstance->host->host_lock, + host_lock_flags); + pmcraid_initiate_reset(pinstance); + spin_unlock_irqrestore(pinstance->host->host_lock, + host_lock_flags); + + spin_lock_irqsave(lockp, hrrq_lock_flags); + break; + } + + if (pinstance->hrrq_curr[id] < pinstance->hrrq_end[id]) { + pinstance->hrrq_curr[id]++; + } else { + pinstance->hrrq_curr[id] = pinstance->hrrq_start[id]; + pinstance->host_toggle_bit[id] ^= 1u; + } + + spin_unlock_irqrestore(lockp, hrrq_lock_flags); + + spin_lock_irqsave(&pinstance->pending_pool_lock, + pending_lock_flags); + list_del(&cmd->free_list); + spin_unlock_irqrestore(&pinstance->pending_pool_lock, + pending_lock_flags); + del_timer(&cmd->timer); + atomic_dec(&pinstance->outstanding_cmds); + + if (cmd->cmd_done == pmcraid_ioa_reset) { + spin_lock_irqsave(pinstance->host->host_lock, + host_lock_flags); + cmd->cmd_done(cmd); + spin_unlock_irqrestore(pinstance->host->host_lock, + host_lock_flags); + } else if (cmd->cmd_done != NULL) { + cmd->cmd_done(cmd); + } + /* loop over until we are done with all responses */ + spin_lock_irqsave(lockp, hrrq_lock_flags); + resp = le32_to_cpu(*(pinstance->hrrq_curr[id])); + } + + spin_unlock_irqrestore(lockp, hrrq_lock_flags); +} + +/** + * pmcraid_unregister_interrupt_handler - de-register interrupts handlers + * @pinstance: pointer to adapter instance structure + * + * This routine un-registers registered interrupt handler and + * also frees irqs/vectors. + * + * Retun Value + * None + */ +static +void pmcraid_unregister_interrupt_handler(struct pmcraid_instance *pinstance) +{ + free_irq(pinstance->pdev->irq, &(pinstance->hrrq_vector[0])); +} + +/** + * pmcraid_register_interrupt_handler - registers interrupt handler + * @pinstance: pointer to per-adapter instance structure + * + * Return Value + * 0 on success, non-zero error code otherwise. + */ +static int +pmcraid_register_interrupt_handler(struct pmcraid_instance *pinstance) +{ + struct pci_dev *pdev = pinstance->pdev; + + pinstance->hrrq_vector[0].hrrq_id = 0; + pinstance->hrrq_vector[0].drv_inst = pinstance; + pinstance->hrrq_vector[0].vector = 0; + pinstance->num_hrrq = 1; + return request_irq(pdev->irq, pmcraid_isr, IRQF_SHARED, + PMCRAID_DRIVER_NAME, &pinstance->hrrq_vector[0]); +} + +/** + * pmcraid_release_cmd_blocks - release buufers allocated for command blocks + * @pinstance: per adapter instance structure pointer + * @max_index: number of buffer blocks to release + * + * Return Value + * None + */ +static void +pmcraid_release_cmd_blocks(struct pmcraid_instance *pinstance, int max_index) +{ + int i; + for (i = 0; i < max_index; i++) { + kmem_cache_free(pinstance->cmd_cachep, pinstance->cmd_list[i]); + pinstance->cmd_list[i] = NULL; + } + kmem_cache_destroy(pinstance->cmd_cachep); + pinstance->cmd_cachep = NULL; +} + +/** + * pmcraid_release_control_blocks - releases buffers alloced for control blocks + * @pinstance: pointer to per adapter instance structure + * @max_index: number of buffers (from 0 onwards) to release + * + * This function assumes that the command blocks for which control blocks are + * linked are not released. + * + * Return Value + * None + */ +static void +pmcraid_release_control_blocks( + struct pmcraid_instance *pinstance, + int max_index +) +{ + int i; + + if (pinstance->control_pool == NULL) + return; + + for (i = 0; i < max_index; i++) { + pci_pool_free(pinstance->control_pool, + pinstance->cmd_list[i]->ioa_cb, + pinstance->cmd_list[i]->ioa_cb_bus_addr); + pinstance->cmd_list[i]->ioa_cb = NULL; + pinstance->cmd_list[i]->ioa_cb_bus_addr = 0; + } + pci_pool_destroy(pinstance->control_pool); + pinstance->control_pool = NULL; +} + +/** + * pmcraid_allocate_cmd_blocks - allocate memory for cmd block structures + * @pinstance - pointer to per adapter instance structure + * + * Allocates memory for command blocks using kernel slab allocator. + * + * Return Value + * 0 in case of success; -ENOMEM in case of failure + */ +static int __devinit +pmcraid_allocate_cmd_blocks(struct pmcraid_instance *pinstance) +{ + int i; + + sprintf(pinstance->cmd_pool_name, "pmcraid_cmd_pool_%d", + pinstance->host->unique_id); + + + pinstance->cmd_cachep = kmem_cache_create( + pinstance->cmd_pool_name, + sizeof(struct pmcraid_cmd), 0, + SLAB_HWCACHE_ALIGN, NULL); + if (!pinstance->cmd_cachep) + return -ENOMEM; + + for (i = 0; i < PMCRAID_MAX_CMD; i++) { + pinstance->cmd_list[i] = + kmem_cache_alloc(pinstance->cmd_cachep, GFP_KERNEL); + if (!pinstance->cmd_list[i]) { + pmcraid_release_cmd_blocks(pinstance, i); + return -ENOMEM; + } + } + return 0; +} + +/** + * pmcraid_allocate_control_blocks - allocates memory control blocks + * @pinstance : pointer to per adapter instance structure + * + * This function allocates PCI memory for DMAable buffers like IOARCB, IOADLs + * and IOASAs. This is called after command blocks are already allocated. + * + * Return Value + * 0 in case it can allocate all control blocks, otherwise -ENOMEM + */ +static int __devinit +pmcraid_allocate_control_blocks(struct pmcraid_instance *pinstance) +{ + int i; + + sprintf(pinstance->ctl_pool_name, "pmcraid_control_pool_%d", + pinstance->host->unique_id); + + pinstance->control_pool = + pci_pool_create(pinstance->ctl_pool_name, + pinstance->pdev, + sizeof(struct pmcraid_control_block), + PMCRAID_IOARCB_ALIGNMENT, 0); + + if (!pinstance->control_pool) + return -ENOMEM; + + for (i = 0; i < PMCRAID_MAX_CMD; i++) { + pinstance->cmd_list[i]->ioa_cb = + pci_pool_alloc( + pinstance->control_pool, + GFP_KERNEL, + &(pinstance->cmd_list[i]->ioa_cb_bus_addr)); + + if (!pinstance->cmd_list[i]->ioa_cb) { + pmcraid_release_control_blocks(pinstance, i); + return -ENOMEM; + } + memset(pinstance->cmd_list[i]->ioa_cb, 0, + sizeof(struct pmcraid_control_block)); + } + return 0; +} + +/** + * pmcraid_release_host_rrqs - release memory allocated for hrrq buffer(s) + * @pinstance: pointer to per adapter instance structure + * @maxindex: size of hrrq buffer pointer array + * + * Return Value + * None + */ +static void +pmcraid_release_host_rrqs(struct pmcraid_instance *pinstance, int maxindex) +{ + int i; + for (i = 0; i < maxindex; i++) { + + pci_free_consistent(pinstance->pdev, + HRRQ_ENTRY_SIZE * PMCRAID_MAX_CMD, + pinstance->hrrq_start[i], + pinstance->hrrq_start_bus_addr[i]); + + /* reset pointers and toggle bit to zeros */ + pinstance->hrrq_start[i] = NULL; + pinstance->hrrq_start_bus_addr[i] = 0; + pinstance->host_toggle_bit[i] = 0; + } +} + +/** + * pmcraid_allocate_host_rrqs - Allocate and initialize host RRQ buffers + * @pinstance: pointer to per adapter instance structure + * + * Return value + * 0 hrrq buffers are allocated, -ENOMEM otherwise. + */ +static int __devinit +pmcraid_allocate_host_rrqs(struct pmcraid_instance *pinstance) +{ + int i; + int buf_count = PMCRAID_MAX_CMD / pinstance->num_hrrq; + + for (i = 0; i < pinstance->num_hrrq; i++) { + int buffer_size = HRRQ_ENTRY_SIZE * buf_count; + + pinstance->hrrq_start[i] = + pci_alloc_consistent( + pinstance->pdev, + buffer_size, + &(pinstance->hrrq_start_bus_addr[i])); + + if (pinstance->hrrq_start[i] == 0) { + pmcraid_err("could not allocate host rrq: %d\n", i); + pmcraid_release_host_rrqs(pinstance, i); + return -ENOMEM; + } + + memset(pinstance->hrrq_start[i], 0, buffer_size); + pinstance->hrrq_curr[i] = pinstance->hrrq_start[i]; + pinstance->hrrq_end[i] = + pinstance->hrrq_start[i] + buf_count - 1; + pinstance->host_toggle_bit[i] = 1; + spin_lock_init(&pinstance->hrrq_lock[i]); + } + return 0; +} + +/** + * pmcraid_release_hcams - release HCAM buffers + * + * @pinstance: pointer to per adapter instance structure + * + * Return value + * none + */ +static void pmcraid_release_hcams(struct pmcraid_instance *pinstance) +{ + if (pinstance->ccn.msg != NULL) { + pci_free_consistent(pinstance->pdev, + PMCRAID_AEN_HDR_SIZE + + sizeof(struct pmcraid_hcam_ccn), + pinstance->ccn.msg, + pinstance->ccn.baddr); + + pinstance->ccn.msg = NULL; + pinstance->ccn.hcam = NULL; + pinstance->ccn.baddr = 0; + } + + if (pinstance->ldn.msg != NULL) { + pci_free_consistent(pinstance->pdev, + PMCRAID_AEN_HDR_SIZE + + sizeof(struct pmcraid_hcam_ldn), + pinstance->ldn.msg, + pinstance->ldn.baddr); + + pinstance->ldn.msg = NULL; + pinstance->ldn.hcam = NULL; + pinstance->ldn.baddr = 0; + } +} + +/** + * pmcraid_allocate_hcams - allocates HCAM buffers + * @pinstance : pointer to per adapter instance structure + * + * Return Value: + * 0 in case of successful allocation, non-zero otherwise + */ +static int pmcraid_allocate_hcams(struct pmcraid_instance *pinstance) +{ + pinstance->ccn.msg = pci_alloc_consistent( + pinstance->pdev, + PMCRAID_AEN_HDR_SIZE + + sizeof(struct pmcraid_hcam_ccn), + &(pinstance->ccn.baddr)); + + pinstance->ldn.msg = pci_alloc_consistent( + pinstance->pdev, + PMCRAID_AEN_HDR_SIZE + + sizeof(struct pmcraid_hcam_ldn), + &(pinstance->ldn.baddr)); + + if (pinstance->ldn.msg == NULL || pinstance->ccn.msg == NULL) { + pmcraid_release_hcams(pinstance); + } else { + pinstance->ccn.hcam = + (void *)pinstance->ccn.msg + PMCRAID_AEN_HDR_SIZE; + pinstance->ldn.hcam = + (void *)pinstance->ldn.msg + PMCRAID_AEN_HDR_SIZE; + + atomic_set(&pinstance->ccn.ignore, 0); + atomic_set(&pinstance->ldn.ignore, 0); + } + + return (pinstance->ldn.msg == NULL) ? -ENOMEM : 0; +} + +/** + * pmcraid_release_config_buffers - release config.table buffers + * @pinstance: pointer to per adapter instance structure + * + * Return Value + * none + */ +static void pmcraid_release_config_buffers(struct pmcraid_instance *pinstance) +{ + if (pinstance->cfg_table != NULL && + pinstance->cfg_table_bus_addr != 0) { + pci_free_consistent(pinstance->pdev, + sizeof(struct pmcraid_config_table), + pinstance->cfg_table, + pinstance->cfg_table_bus_addr); + pinstance->cfg_table = NULL; + pinstance->cfg_table_bus_addr = 0; + } + + if (pinstance->res_entries != NULL) { + int i; + + for (i = 0; i < PMCRAID_MAX_RESOURCES; i++) + list_del(&pinstance->res_entries[i].queue); + kfree(pinstance->res_entries); + pinstance->res_entries = NULL; + } + + pmcraid_release_hcams(pinstance); +} + +/** + * pmcraid_allocate_config_buffers - allocates DMAable memory for config table + * @pinstance : pointer to per adapter instance structure + * + * Return Value + * 0 for successful allocation, -ENOMEM for any failure + */ +static int __devinit +pmcraid_allocate_config_buffers(struct pmcraid_instance *pinstance) +{ + int i; + + pinstance->res_entries = + kzalloc(sizeof(struct pmcraid_resource_entry) * + PMCRAID_MAX_RESOURCES, GFP_KERNEL); + + if (NULL == pinstance->res_entries) { + pmcraid_err("failed to allocate memory for resource table\n"); + return -ENOMEM; + } + + for (i = 0; i < PMCRAID_MAX_RESOURCES; i++) + list_add_tail(&pinstance->res_entries[i].queue, + &pinstance->free_res_q); + + pinstance->cfg_table = + pci_alloc_consistent(pinstance->pdev, + sizeof(struct pmcraid_config_table), + &pinstance->cfg_table_bus_addr); + + if (NULL == pinstance->cfg_table) { + pmcraid_err("couldn't alloc DMA memory for config table\n"); + pmcraid_release_config_buffers(pinstance); + return -ENOMEM; + } + + if (pmcraid_allocate_hcams(pinstance)) { + pmcraid_err("could not alloc DMA memory for HCAMS\n"); + pmcraid_release_config_buffers(pinstance); + return -ENOMEM; + } + + return 0; +} + +/** + * pmcraid_init_tasklets - registers tasklets for response handling + * + * @pinstance: pointer adapter instance structure + * + * Return value + * none + */ +static void pmcraid_init_tasklets(struct pmcraid_instance *pinstance) +{ + int i; + for (i = 0; i < pinstance->num_hrrq; i++) + tasklet_init(&pinstance->isr_tasklet[i], + pmcraid_tasklet_function, + (unsigned long)&pinstance->hrrq_vector[i]); +} + +/** + * pmcraid_kill_tasklets - destroys tasklets registered for response handling + * + * @pinstance: pointer to adapter instance structure + * + * Return value + * none + */ +static void pmcraid_kill_tasklets(struct pmcraid_instance *pinstance) +{ + int i; + for (i = 0; i < pinstance->num_hrrq; i++) + tasklet_kill(&pinstance->isr_tasklet[i]); +} + +/** + * pmcraid_init_buffers - allocates memory and initializes various structures + * @pinstance: pointer to per adapter instance structure + * + * This routine pre-allocates memory based on the type of block as below: + * cmdblocks(PMCRAID_MAX_CMD): kernel memory using kernel's slab_allocator, + * IOARCBs(PMCRAID_MAX_CMD) : DMAable memory, using pci pool allocator + * config-table entries : DMAable memory using pci_alloc_consistent + * HostRRQs : DMAable memory, using pci_alloc_consistent + * + * Return Value + * 0 in case all of the blocks are allocated, -ENOMEM otherwise. + */ +static int __devinit pmcraid_init_buffers(struct pmcraid_instance *pinstance) +{ + int i; + + if (pmcraid_allocate_host_rrqs(pinstance)) { + pmcraid_err("couldn't allocate memory for %d host rrqs\n", + pinstance->num_hrrq); + return -ENOMEM; + } + + if (pmcraid_allocate_config_buffers(pinstance)) { + pmcraid_err("couldn't allocate memory for config buffers\n"); + pmcraid_release_host_rrqs(pinstance, pinstance->num_hrrq); + return -ENOMEM; + } + + if (pmcraid_allocate_cmd_blocks(pinstance)) { + pmcraid_err("couldn't allocate memory for cmd blocks \n"); + pmcraid_release_config_buffers(pinstance); + pmcraid_release_host_rrqs(pinstance, pinstance->num_hrrq); + return -ENOMEM; + } + + if (pmcraid_allocate_control_blocks(pinstance)) { + pmcraid_err("couldn't allocate memory control blocks \n"); + pmcraid_release_config_buffers(pinstance); + pmcraid_release_cmd_blocks(pinstance, PMCRAID_MAX_CMD); + pmcraid_release_host_rrqs(pinstance, pinstance->num_hrrq); + return -ENOMEM; + } + + /* Initialize all the command blocks and add them to free pool. No + * need to lock (free_pool_lock) as this is done in initialization + * itself + */ + for (i = 0; i < PMCRAID_MAX_CMD; i++) { + struct pmcraid_cmd *cmdp = pinstance->cmd_list[i]; + pmcraid_init_cmdblk(cmdp, i); + cmdp->drv_inst = pinstance; + list_add_tail(&cmdp->free_list, &pinstance->free_cmd_pool); + } + + return 0; +} + +/** + * pmcraid_reinit_buffers - resets various buffer pointers + * @pinstance: pointer to adapter instance + * Return value + * none + */ +static void pmcraid_reinit_buffers(struct pmcraid_instance *pinstance) +{ + int i; + int buffer_size = HRRQ_ENTRY_SIZE * PMCRAID_MAX_CMD; + + for (i = 0; i < pinstance->num_hrrq; i++) { + memset(pinstance->hrrq_start[i], 0, buffer_size); + pinstance->hrrq_curr[i] = pinstance->hrrq_start[i]; + pinstance->hrrq_end[i] = + pinstance->hrrq_start[i] + PMCRAID_MAX_CMD - 1; + pinstance->host_toggle_bit[i] = 1; + } +} + +/** + * pmcraid_init_instance - initialize per instance data structure + * @pdev: pointer to pci device structure + * @host: pointer to Scsi_Host structure + * @mapped_pci_addr: memory mapped IOA configuration registers + * + * Return Value + * 0 on success, non-zero in case of any failure + */ +static int __devinit pmcraid_init_instance( + struct pci_dev *pdev, + struct Scsi_Host *host, + void __iomem *mapped_pci_addr +) +{ + struct pmcraid_instance *pinstance = + (struct pmcraid_instance *)host->hostdata; + + pinstance->host = host; + pinstance->pdev = pdev; + + /* Initialize register addresses */ + pinstance->mapped_dma_addr = mapped_pci_addr; + + /* Initialize chip-specific details */ + { + struct pmcraid_chip_details *chip_cfg = pinstance->chip_cfg; + struct pmcraid_interrupts *pint_regs = &pinstance->int_regs; + + pinstance->ioarrin = mapped_pci_addr + chip_cfg->ioarrin; + + pint_regs->ioa_host_interrupt_reg = + mapped_pci_addr + chip_cfg->ioa_host_intr; + pint_regs->ioa_host_interrupt_clr_reg = + mapped_pci_addr + chip_cfg->ioa_host_intr_clr; + pint_regs->host_ioa_interrupt_reg = + mapped_pci_addr + chip_cfg->host_ioa_intr; + pint_regs->host_ioa_interrupt_clr_reg = + mapped_pci_addr + chip_cfg->host_ioa_intr_clr; + + /* Current version of firmware exposes interrupt mask set + * and mask clr registers through memory mapped bar0. + */ + pinstance->mailbox = mapped_pci_addr + chip_cfg->mailbox; + pinstance->ioa_status = mapped_pci_addr + chip_cfg->ioastatus; + pint_regs->ioa_host_interrupt_mask_reg = + mapped_pci_addr + chip_cfg->ioa_host_mask; + pint_regs->ioa_host_interrupt_mask_clr_reg = + mapped_pci_addr + chip_cfg->ioa_host_mask_clr; + pint_regs->global_interrupt_mask_reg = + mapped_pci_addr + chip_cfg->global_intr_mask; + }; + + pinstance->ioa_reset_attempts = 0; + init_waitqueue_head(&pinstance->reset_wait_q); + + atomic_set(&pinstance->outstanding_cmds, 0); + atomic_set(&pinstance->expose_resources, 0); + + INIT_LIST_HEAD(&pinstance->free_res_q); + INIT_LIST_HEAD(&pinstance->used_res_q); + INIT_LIST_HEAD(&pinstance->free_cmd_pool); + INIT_LIST_HEAD(&pinstance->pending_cmd_pool); + + spin_lock_init(&pinstance->free_pool_lock); + spin_lock_init(&pinstance->pending_pool_lock); + spin_lock_init(&pinstance->resource_lock); + mutex_init(&pinstance->aen_queue_lock); + + /* Work-queue (Shared) for deferred processing error handling */ + INIT_WORK(&pinstance->worker_q, pmcraid_worker_function); + + /* Initialize the default log_level */ + pinstance->current_log_level = pmcraid_log_level; + + /* Setup variables required for reset engine */ + pinstance->ioa_state = IOA_STATE_UNKNOWN; + pinstance->reset_cmd = NULL; + return 0; +} + +/** + * pmcraid_release_buffers - release per-adapter buffers allocated + * + * @pinstance: pointer to adapter soft state + * + * Return Value + * none + */ +static void pmcraid_release_buffers(struct pmcraid_instance *pinstance) +{ + pmcraid_release_config_buffers(pinstance); + pmcraid_release_control_blocks(pinstance, PMCRAID_MAX_CMD); + pmcraid_release_cmd_blocks(pinstance, PMCRAID_MAX_CMD); + pmcraid_release_host_rrqs(pinstance, pinstance->num_hrrq); + +} + +/** + * pmcraid_shutdown - shutdown adapter controller. + * @pdev: pci device struct + * + * Issues an adapter shutdown to the card waits for its completion + * + * Return value + * none + */ +static void pmcraid_shutdown(struct pci_dev *pdev) +{ + struct pmcraid_instance *pinstance = pci_get_drvdata(pdev); + pmcraid_reset_bringdown(pinstance); +} + + +/** + * pmcraid_get_minor - returns unused minor number from minor number bitmap + */ +static unsigned short pmcraid_get_minor(void) +{ + int minor; + + minor = find_first_zero_bit(pmcraid_minor, sizeof(pmcraid_minor)); + __set_bit(minor, pmcraid_minor); + return minor; +} + +/** + * pmcraid_release_minor - releases given minor back to minor number bitmap + */ +static void pmcraid_release_minor(unsigned short minor) +{ + __clear_bit(minor, pmcraid_minor); +} + +/** + * pmcraid_setup_chrdev - allocates a minor number and registers a char device + * + * @pinstance: pointer to adapter instance for which to register device + * + * Return value + * 0 in case of success, otherwise non-zero + */ +static int pmcraid_setup_chrdev(struct pmcraid_instance *pinstance) +{ + int minor; + int error; + + minor = pmcraid_get_minor(); + cdev_init(&pinstance->cdev, &pmcraid_fops); + pinstance->cdev.owner = THIS_MODULE; + + error = cdev_add(&pinstance->cdev, MKDEV(pmcraid_major, minor), 1); + + if (error) + pmcraid_release_minor(minor); + else + device_create(pmcraid_class, NULL, MKDEV(pmcraid_major, minor), + NULL, "pmcsas%u", minor); + return error; +} + +/** + * pmcraid_release_chrdev - unregisters per-adapter management interface + * + * @pinstance: pointer to adapter instance structure + * + * Return value + * none + */ +static void pmcraid_release_chrdev(struct pmcraid_instance *pinstance) +{ + pmcraid_release_minor(MINOR(pinstance->cdev.dev)); + device_destroy(pmcraid_class, + MKDEV(pmcraid_major, MINOR(pinstance->cdev.dev))); + cdev_del(&pinstance->cdev); +} + +/** + * pmcraid_remove - IOA hot plug remove entry point + * @pdev: pci device struct + * + * Return value + * none + */ +static void __devexit pmcraid_remove(struct pci_dev *pdev) +{ + struct pmcraid_instance *pinstance = pci_get_drvdata(pdev); + + /* remove the management interface (/dev file) for this device */ + pmcraid_release_chrdev(pinstance); + + /* remove host template from scsi midlayer */ + scsi_remove_host(pinstance->host); + + /* block requests from mid-layer */ + scsi_block_requests(pinstance->host); + + /* initiate shutdown adapter */ + pmcraid_shutdown(pdev); + + pmcraid_disable_interrupts(pinstance, ~0); + flush_scheduled_work(); + + pmcraid_kill_tasklets(pinstance); + pmcraid_unregister_interrupt_handler(pinstance); + pmcraid_release_buffers(pinstance); + iounmap(pinstance->mapped_dma_addr); + pci_release_regions(pdev); + scsi_host_put(pinstance->host); + pci_disable_device(pdev); + + return; +} + +#ifdef CONFIG_PM +/** + * pmcraid_suspend - driver suspend entry point for power management + * @pdev: PCI device structure + * @state: PCI power state to suspend routine + * + * Return Value - 0 always + */ +static int pmcraid_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct pmcraid_instance *pinstance = pci_get_drvdata(pdev); + + pmcraid_shutdown(pdev); + pmcraid_disable_interrupts(pinstance, ~0); + pmcraid_kill_tasklets(pinstance); + pci_set_drvdata(pinstance->pdev, pinstance); + pmcraid_unregister_interrupt_handler(pinstance); + pci_save_state(pdev); + pci_disable_device(pdev); + pci_set_power_state(pdev, pci_choose_state(pdev, state)); + + return 0; +} + +/** + * pmcraid_resume - driver resume entry point PCI power management + * @pdev: PCI device structure + * + * Return Value - 0 in case of success. Error code in case of any failure + */ +static int pmcraid_resume(struct pci_dev *pdev) +{ + struct pmcraid_instance *pinstance = pci_get_drvdata(pdev); + struct Scsi_Host *host = pinstance->host; + int rc; + int hrrqs; + + pci_set_power_state(pdev, PCI_D0); + pci_enable_wake(pdev, PCI_D0, 0); + pci_restore_state(pdev); + + rc = pci_enable_device(pdev); + + if (rc) { + pmcraid_err("pmcraid: Enable device failed\n"); + return rc; + } + + pci_set_master(pdev); + + if ((sizeof(dma_addr_t) == 4) || + pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) + rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); + + if (rc == 0) + rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); + + if (rc != 0) { + dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); + goto disable_device; + } + + atomic_set(&pinstance->outstanding_cmds, 0); + hrrqs = pinstance->num_hrrq; + rc = pmcraid_register_interrupt_handler(pinstance); + + if (rc) { + pmcraid_err("resume: couldn't register interrupt handlers\n"); + rc = -ENODEV; + goto release_host; + } + + pmcraid_init_tasklets(pinstance); + pmcraid_enable_interrupts(pinstance, PMCRAID_PCI_INTERRUPTS); + + /* Start with hard reset sequence which brings up IOA to operational + * state as well as completes the reset sequence. + */ + pinstance->ioa_hard_reset = 1; + + /* Start IOA firmware initialization and bring card to Operational + * state. + */ + if (pmcraid_reset_bringup(pinstance)) { + pmcraid_err("couldn't initialize IOA \n"); + rc = -ENODEV; + goto release_tasklets; + } + + return 0; + +release_tasklets: + pmcraid_kill_tasklets(pinstance); + pmcraid_unregister_interrupt_handler(pinstance); + +release_host: + scsi_host_put(host); + +disable_device: + pci_disable_device(pdev); + + return rc; +} + +#else + +#define pmcraid_suspend NULL +#define pmcraid_resume NULL + +#endif /* CONFIG_PM */ + +/** + * pmcraid_complete_ioa_reset - Called by either timer or tasklet during + * completion of the ioa reset + * @cmd: pointer to reset command block + */ +static void pmcraid_complete_ioa_reset(struct pmcraid_cmd *cmd) +{ + struct pmcraid_instance *pinstance = cmd->drv_inst; + unsigned long flags; + + spin_lock_irqsave(pinstance->host->host_lock, flags); + pmcraid_ioa_reset(cmd); + spin_unlock_irqrestore(pinstance->host->host_lock, flags); + scsi_unblock_requests(pinstance->host); + schedule_work(&pinstance->worker_q); +} + +/** + * pmcraid_set_supported_devs - sends SET SUPPORTED DEVICES to IOAFP + * + * @cmd: pointer to pmcraid_cmd structure + * + * Return Value + * 0 for success or non-zero for failure cases + */ +static void pmcraid_set_supported_devs(struct pmcraid_cmd *cmd) +{ + struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb; + void (*cmd_done) (struct pmcraid_cmd *) = pmcraid_complete_ioa_reset; + + pmcraid_reinit_cmdblk(cmd); + + ioarcb->resource_handle = cpu_to_le32(PMCRAID_IOA_RES_HANDLE); + ioarcb->request_type = REQ_TYPE_IOACMD; + ioarcb->cdb[0] = PMCRAID_SET_SUPPORTED_DEVICES; + ioarcb->cdb[1] = ALL_DEVICES_SUPPORTED; + + /* If this was called as part of resource table reinitialization due to + * lost CCN, it is enough to return the command block back to free pool + * as part of set_supported_devs completion function. + */ + if (cmd->drv_inst->reinit_cfg_table) { + cmd->drv_inst->reinit_cfg_table = 0; + cmd->release = 1; + cmd_done = pmcraid_reinit_cfgtable_done; + } + + /* we will be done with the reset sequence after set supported devices, + * setup the done function to return the command block back to free + * pool + */ + pmcraid_send_cmd(cmd, + cmd_done, + PMCRAID_SET_SUP_DEV_TIMEOUT, + pmcraid_timeout_handler); + return; +} + +/** + * pmcraid_init_res_table - Initialize the resource table + * @cmd: pointer to pmcraid command struct + * + * This function looks through the existing resource table, comparing + * it with the config table. This function will take care of old/new + * devices and schedule adding/removing them from the mid-layer + * as appropriate. + * + * Return value + * None + */ +static void pmcraid_init_res_table(struct pmcraid_cmd *cmd) +{ + struct pmcraid_instance *pinstance = cmd->drv_inst; + struct pmcraid_resource_entry *res, *temp; + struct pmcraid_config_table_entry *cfgte; + unsigned long lock_flags; + int found, rc, i; + LIST_HEAD(old_res); + + if (pinstance->cfg_table->flags & MICROCODE_UPDATE_REQUIRED) + dev_err(&pinstance->pdev->dev, "Require microcode download\n"); + + /* resource list is protected by pinstance->resource_lock. + * init_res_table can be called from probe (user-thread) or runtime + * reset (timer/tasklet) + */ + spin_lock_irqsave(&pinstance->resource_lock, lock_flags); + + list_for_each_entry_safe(res, temp, &pinstance->used_res_q, queue) + list_move_tail(&res->queue, &old_res); + + for (i = 0; i < pinstance->cfg_table->num_entries; i++) { + cfgte = &pinstance->cfg_table->entries[i]; + + if (!pmcraid_expose_resource(cfgte)) + continue; + + found = 0; + + /* If this entry was already detected and initialized */ + list_for_each_entry_safe(res, temp, &old_res, queue) { + + rc = memcmp(&res->cfg_entry.resource_address, + &cfgte->resource_address, + sizeof(cfgte->resource_address)); + if (!rc) { + list_move_tail(&res->queue, + &pinstance->used_res_q); + found = 1; + break; + } + } + + /* If this is new entry, initialize it and add it the queue */ + if (!found) { + + if (list_empty(&pinstance->free_res_q)) { + dev_err(&pinstance->pdev->dev, + "Too many devices attached\n"); + break; + } + + found = 1; + res = list_entry(pinstance->free_res_q.next, + struct pmcraid_resource_entry, queue); + + res->scsi_dev = NULL; + res->change_detected = RES_CHANGE_ADD; + res->reset_progress = 0; + list_move_tail(&res->queue, &pinstance->used_res_q); + } + + /* copy new configuration table entry details into driver + * maintained resource entry + */ + if (found) { + memcpy(&res->cfg_entry, cfgte, + sizeof(struct pmcraid_config_table_entry)); + pmcraid_info("New res type:%x, vset:%x, addr:%x:\n", + res->cfg_entry.resource_type, + res->cfg_entry.unique_flags1, + le32_to_cpu(res->cfg_entry.resource_address)); + } + } + + /* Detect any deleted entries, mark them for deletion from mid-layer */ + list_for_each_entry_safe(res, temp, &old_res, queue) { + + if (res->scsi_dev) { + res->change_detected = RES_CHANGE_DEL; + res->cfg_entry.resource_handle = + PMCRAID_INVALID_RES_HANDLE; + list_move_tail(&res->queue, &pinstance->used_res_q); + } else { + list_move_tail(&res->queue, &pinstance->free_res_q); + } + } + + /* release the resource list lock */ + spin_unlock_irqrestore(&pinstance->resource_lock, lock_flags); + pmcraid_set_supported_devs(cmd); +} + +/** + * pmcraid_querycfg - Send a Query IOA Config to the adapter. + * @cmd: pointer pmcraid_cmd struct + * + * This function sends a Query IOA Configuration command to the adapter to + * retrieve the IOA configuration table. + * + * Return value: + * none + */ +static void pmcraid_querycfg(struct pmcraid_cmd *cmd) +{ + struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb; + struct pmcraid_ioadl_desc *ioadl = ioarcb->add_data.u.ioadl; + struct pmcraid_instance *pinstance = cmd->drv_inst; + int cfg_table_size = cpu_to_be32(sizeof(struct pmcraid_config_table)); + + ioarcb->request_type = REQ_TYPE_IOACMD; + ioarcb->resource_handle = cpu_to_le32(PMCRAID_IOA_RES_HANDLE); + + ioarcb->cdb[0] = PMCRAID_QUERY_IOA_CONFIG; + + /* firmware requires 4-byte length field, specified in B.E format */ + memcpy(&(ioarcb->cdb[10]), &cfg_table_size, sizeof(cfg_table_size)); + + /* Since entire config table can be described by single IOADL, it can + * be part of IOARCB itself + */ + ioarcb->ioadl_bus_addr = cpu_to_le64((cmd->ioa_cb_bus_addr) + + offsetof(struct pmcraid_ioarcb, + add_data.u.ioadl[0])); + ioarcb->ioadl_length = cpu_to_le32(sizeof(struct pmcraid_ioadl_desc)); + ioarcb->ioarcb_bus_addr &= ~(0x1FULL); + + ioarcb->request_flags0 |= NO_LINK_DESCS; + ioarcb->data_transfer_length = + cpu_to_le32(sizeof(struct pmcraid_config_table)); + + ioadl = &(ioarcb->add_data.u.ioadl[0]); + ioadl->flags = cpu_to_le32(IOADL_FLAGS_LAST_DESC); + ioadl->address = cpu_to_le64(pinstance->cfg_table_bus_addr); + ioadl->data_len = cpu_to_le32(sizeof(struct pmcraid_config_table)); + + pmcraid_send_cmd(cmd, pmcraid_init_res_table, + PMCRAID_INTERNAL_TIMEOUT, pmcraid_timeout_handler); +} + + +/** + * pmcraid_probe - PCI probe entry pointer for PMC MaxRaid controller driver + * @pdev: pointer to pci device structure + * @dev_id: pointer to device ids structure + * + * Return Value + * returns 0 if the device is claimed and successfully configured. + * returns non-zero error code in case of any failure + */ +static int __devinit pmcraid_probe( + struct pci_dev *pdev, + const struct pci_device_id *dev_id +) +{ + struct pmcraid_instance *pinstance; + struct Scsi_Host *host; + void __iomem *mapped_pci_addr; + int rc = PCIBIOS_SUCCESSFUL; + + if (atomic_read(&pmcraid_adapter_count) >= PMCRAID_MAX_ADAPTERS) { + pmcraid_err + ("maximum number(%d) of supported adapters reached\n", + atomic_read(&pmcraid_adapter_count)); + return -ENOMEM; + } + + atomic_inc(&pmcraid_adapter_count); + rc = pci_enable_device(pdev); + + if (rc) { + dev_err(&pdev->dev, "Cannot enable adapter\n"); + atomic_dec(&pmcraid_adapter_count); + return rc; + } + + dev_info(&pdev->dev, + "Found new IOA(%x:%x), Total IOA count: %d\n", + pdev->vendor, pdev->device, + atomic_read(&pmcraid_adapter_count)); + + rc = pci_request_regions(pdev, PMCRAID_DRIVER_NAME); + + if (rc < 0) { + dev_err(&pdev->dev, + "Couldn't register memory range of registers\n"); + goto out_disable_device; + } + + mapped_pci_addr = pci_iomap(pdev, 0, 0); + + if (!mapped_pci_addr) { + dev_err(&pdev->dev, "Couldn't map PCI registers memory\n"); + rc = -ENOMEM; + goto out_release_regions; + } + + pci_set_master(pdev); + + /* Firmware requires the system bus address of IOARCB to be within + * 32-bit addressable range though it has 64-bit IOARRIN register. + * However, firmware supports 64-bit streaming DMA buffers, whereas + * coherent buffers are to be 32-bit. Since pci_alloc_consistent always + * returns memory within 4GB (if not, change this logic), coherent + * buffers are within firmware acceptible address ranges. + */ + if ((sizeof(dma_addr_t) == 4) || + pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) + rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); + + /* firmware expects 32-bit DMA addresses for IOARRIN register; set 32 + * bit mask for pci_alloc_consistent to return addresses within 4GB + */ + if (rc == 0) + rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); + + if (rc != 0) { + dev_err(&pdev->dev, "Failed to set PCI DMA mask\n"); + goto cleanup_nomem; + } + + host = scsi_host_alloc(&pmcraid_host_template, + sizeof(struct pmcraid_instance)); + + if (!host) { + dev_err(&pdev->dev, "scsi_host_alloc failed!\n"); + rc = -ENOMEM; + goto cleanup_nomem; + } + + host->max_id = PMCRAID_MAX_NUM_TARGETS_PER_BUS; + host->max_lun = PMCRAID_MAX_NUM_LUNS_PER_TARGET; + host->unique_id = host->host_no; + host->max_channel = PMCRAID_MAX_BUS_TO_SCAN; + host->max_cmd_len = PMCRAID_MAX_CDB_LEN; + + /* zero out entire instance structure */ + pinstance = (struct pmcraid_instance *)host->hostdata; + memset(pinstance, 0, sizeof(*pinstance)); + + pinstance->chip_cfg = + (struct pmcraid_chip_details *)(dev_id->driver_data); + + rc = pmcraid_init_instance(pdev, host, mapped_pci_addr); + + if (rc < 0) { + dev_err(&pdev->dev, "failed to initialize adapter instance\n"); + goto out_scsi_host_put; + } + + pci_set_drvdata(pdev, pinstance); + + /* Save PCI config-space for use following the reset */ + rc = pci_save_state(pinstance->pdev); + + if (rc != 0) { + dev_err(&pdev->dev, "Failed to save PCI config space\n"); + goto out_scsi_host_put; + } + + pmcraid_disable_interrupts(pinstance, ~0); + + rc = pmcraid_register_interrupt_handler(pinstance); + + if (rc) { + pmcraid_err("couldn't register interrupt handler\n"); + goto out_scsi_host_put; + } + + pmcraid_init_tasklets(pinstance); + + /* allocate verious buffers used by LLD.*/ + rc = pmcraid_init_buffers(pinstance); + + if (rc) { + pmcraid_err("couldn't allocate memory blocks\n"); + goto out_unregister_isr; + } + + /* check the reset type required */ + pmcraid_reset_type(pinstance); + + pmcraid_enable_interrupts(pinstance, PMCRAID_PCI_INTERRUPTS); + + /* Start IOA firmware initialization and bring card to Operational + * state. + */ + pmcraid_info("starting IOA initialization sequence\n"); + if (pmcraid_reset_bringup(pinstance)) { + pmcraid_err("couldn't initialize IOA \n"); + rc = 1; + goto out_release_bufs; + } + + /* Add adapter instance into mid-layer list */ + rc = scsi_add_host(pinstance->host, &pdev->dev); + if (rc != 0) { + pmcraid_err("couldn't add host into mid-layer: %d\n", rc); + goto out_release_bufs; + } + + scsi_scan_host(pinstance->host); + + rc = pmcraid_setup_chrdev(pinstance); + + if (rc != 0) { + pmcraid_err("couldn't create mgmt interface, error: %x\n", + rc); + goto out_remove_host; + } + + /* Schedule worker thread to handle CCN and take care of adding and + * removing devices to OS + */ + atomic_set(&pinstance->expose_resources, 1); + schedule_work(&pinstance->worker_q); + return rc; + +out_remove_host: + scsi_remove_host(host); + +out_release_bufs: + pmcraid_release_buffers(pinstance); + +out_unregister_isr: + pmcraid_kill_tasklets(pinstance); + pmcraid_unregister_interrupt_handler(pinstance); + +out_scsi_host_put: + scsi_host_put(host); + +cleanup_nomem: + iounmap(mapped_pci_addr); + +out_release_regions: + pci_release_regions(pdev); + +out_disable_device: + atomic_dec(&pmcraid_adapter_count); + pci_set_drvdata(pdev, NULL); + pci_disable_device(pdev); + return -ENODEV; +} + +/* + * PCI driver structure of pcmraid driver + */ +static struct pci_driver pmcraid_driver = { + .name = PMCRAID_DRIVER_NAME, + .id_table = pmcraid_pci_table, + .probe = pmcraid_probe, + .remove = pmcraid_remove, + .suspend = pmcraid_suspend, + .resume = pmcraid_resume, + .shutdown = pmcraid_shutdown +}; + + +/** + * pmcraid_init - module load entry point + */ +static int __init pmcraid_init(void) +{ + dev_t dev; + int error; + + pmcraid_info("%s Device Driver version: %s %s\n", + PMCRAID_DRIVER_NAME, + PMCRAID_DRIVER_VERSION, PMCRAID_DRIVER_DATE); + + error = alloc_chrdev_region(&dev, 0, + PMCRAID_MAX_ADAPTERS, + PMCRAID_DEVFILE); + + if (error) { + pmcraid_err("failed to get a major number for adapters\n"); + goto out_init; + } + + pmcraid_major = MAJOR(dev); + pmcraid_class = class_create(THIS_MODULE, PMCRAID_DEVFILE); + + if (IS_ERR(pmcraid_class)) { + error = PTR_ERR(pmcraid_class); + pmcraid_err("failed to register with with sysfs, error = %x\n", + error); + goto out_unreg_chrdev; + } + + + error = pmcraid_netlink_init(); + + if (error) + goto out_unreg_chrdev; + + error = pci_register_driver(&pmcraid_driver); + + if (error == 0) + goto out_init; + + pmcraid_err("failed to register pmcraid driver, error = %x\n", + error); + class_destroy(pmcraid_class); + pmcraid_netlink_release(); + +out_unreg_chrdev: + unregister_chrdev_region(MKDEV(pmcraid_major, 0), PMCRAID_MAX_ADAPTERS); +out_init: + return error; +} + +/** + * pmcraid_exit - module unload entry point + */ +static void __exit pmcraid_exit(void) +{ + pmcraid_netlink_release(); + class_destroy(pmcraid_class); + unregister_chrdev_region(MKDEV(pmcraid_major, 0), + PMCRAID_MAX_ADAPTERS); + pci_unregister_driver(&pmcraid_driver); +} + +module_init(pmcraid_init); +module_exit(pmcraid_exit); diff --git a/drivers/scsi/pmcraid.h b/drivers/scsi/pmcraid.h new file mode 100644 index 0000000..614b3a7 --- /dev/null +++ b/drivers/scsi/pmcraid.h @@ -0,0 +1,1029 @@ +/* + * pmcraid.h -- PMC Sierra MaxRAID controller driver header file + * + * Copyright (C) 2008, 2009 PMC Sierra Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef _PMCRAID_H +#define _PMCRAID_H + +#include <linux/version.h> +#include <linux/types.h> +#include <linux/completion.h> +#include <linux/list.h> +#include <scsi/scsi.h> +#include <linux/kref.h> +#include <scsi/scsi_cmnd.h> +#include <linux/cdev.h> +#include <net/netlink.h> +#include <net/genetlink.h> +#include <linux/connector.h> +/* + * Driver name : string representing the driver name + * Device file : /dev file to be used for management interfaces + * Driver version: version string in major_version.minor_version.patch format + * Driver date : date information in "Mon dd yyyy" format + */ +#define PMCRAID_DRIVER_NAME "PMC MaxRAID" +#define PMCRAID_DEVFILE "pmcsas" +#define PMCRAID_DRIVER_VERSION "1.0.2" +#define PMCRAID_DRIVER_DATE __DATE__ + +/* Maximum number of adapters supported by current version of the driver */ +#define PMCRAID_MAX_ADAPTERS 1024 + +/* Bit definitions as per firmware, bit position [0][1][2].....[31] */ +#define PMC_BIT8(n) (1 << (7-n)) +#define PMC_BIT16(n) (1 << (15-n)) +#define PMC_BIT32(n) (1 << (31-n)) + +/* PMC PCI vendor ID and device ID values */ +#define PCI_VENDOR_ID_PMC 0x11F8 +#define PCI_DEVICE_ID_PMC_MAXRAID 0x5220 + +/* + * MAX_CMD : maximum commands that can be outstanding with IOA + * MAX_IO_CMD : command blocks available for IO commands + * MAX_HCAM_CMD : command blocks avaibale for HCAMS + * MAX_INTERNAL_CMD : command blocks avaible for internal commands like reset + */ +#define PMCRAID_MAX_CMD 1024 +#define PMCRAID_MAX_IO_CMD 1020 +#define PMCRAID_MAX_HCAM_CMD 2 +#define PMCRAID_MAX_INTERNAL_CMD 2 + +/* MAX_IOADLS : max number of scatter-gather lists supported by IOA + * IOADLS_INTERNAL : number of ioadls included as part of IOARCB. + * IOADLS_EXTERNAL : number of ioadls allocated external to IOARCB + */ +#define PMCRAID_IOADLS_INTERNAL 27 +#define PMCRAID_IOADLS_EXTERNAL 37 +#define PMCRAID_MAX_IOADLS PMCRAID_IOADLS_INTERNAL + +/* HRRQ_ENTRY_SIZE : size of hrrq buffer + * IOARCB_ALIGNMENT : alignment required for IOARCB + * IOADL_ALIGNMENT : alignment requirement for IOADLs + * MSIX_VECTORS : number of MSIX vectors supported + */ +#define HRRQ_ENTRY_SIZE sizeof(__le32) +#define PMCRAID_IOARCB_ALIGNMENT 32 +#define PMCRAID_IOADL_ALIGNMENT 16 +#define PMCRAID_IOASA_ALIGNMENT 4 +#define PMCRAID_NUM_MSIX_VECTORS 1 + +/* various other limits */ +#define PMCRAID_VENDOR_ID_LEN 8 +#define PMCRAID_PRODUCT_ID_LEN 16 +#define PMCRAID_SERIAL_NUM_LEN 8 +#define PMCRAID_LUN_LEN 8 +#define PMCRAID_MAX_CDB_LEN 16 +#define PMCRAID_DEVICE_ID_LEN 8 +#define PMCRAID_SENSE_DATA_LEN 256 +#define PMCRAID_ADD_CMD_PARAM_LEN 48 + +#define PMCRAID_MAX_BUS_TO_SCAN 1 +#define PMCRAID_MAX_NUM_TARGETS_PER_BUS 256 +#define PMCRAID_MAX_NUM_LUNS_PER_TARGET 8 + +/* IOA bus/target/lun number of IOA resources */ +#define PMCRAID_IOA_BUS_ID 0xfe +#define PMCRAID_IOA_TARGET_ID 0xff +#define PMCRAID_IOA_LUN_ID 0xff +#define PMCRAID_VSET_BUS_ID 0x1 +#define PMCRAID_VSET_LUN_ID 0x0 +#define PMCRAID_PHYS_BUS_ID 0x0 +#define PMCRAID_VIRTUAL_ENCL_BUS_ID 0x8 +#define PMCRAID_MAX_VSET_TARGETS 240 +#define PMCRAID_MAX_VSET_LUNS_PER_TARGET 8 + +#define PMCRAID_IOA_MAX_SECTORS 32767 +#define PMCRAID_VSET_MAX_SECTORS 512 +#define PMCRAID_MAX_CMD_PER_LUN 254 + +/* Number of configuration table entries (resources) */ +#define PMCRAID_MAX_NUM_OF_VSETS 240 + +/* Todo : Check max limit for Phase 1 */ +#define PMCRAID_MAX_NUM_OF_PHY_DEVS 256 + +/* MAX_NUM_OF_DEVS includes 1 FP, 1 Dummy Enclosure device */ +#define PMCRAID_MAX_NUM_OF_DEVS \ + (PMCRAID_MAX_NUM_OF_VSETS + PMCRAID_MAX_NUM_OF_PHY_DEVS + 2) + +#define PMCRAID_MAX_RESOURCES PMCRAID_MAX_NUM_OF_DEVS + +/* Adapter Commands used by driver */ +#define PMCRAID_QUERY_RESOURCE_STATE 0xC2 +#define PMCRAID_RESET_DEVICE 0xC3 +/* options to select reset target */ +#define ENABLE_RESET_MODIFIER 0x80 +#define RESET_DEVICE_LUN 0x40 +#define RESET_DEVICE_TARGET 0x20 +#define RESET_DEVICE_BUS 0x10 + +#define PMCRAID_IDENTIFY_HRRQ 0xC4 +#define PMCRAID_QUERY_IOA_CONFIG 0xC5 +#define PMCRAID_QUERY_CMD_STATUS 0xCB +#define PMCRAID_ABORT_CMD 0xC7 + +/* CANCEL ALL command, provides option for setting SYNC_COMPLETE + * on the target resources for which commands got cancelled + */ +#define PMCRAID_CANCEL_ALL_REQUESTS 0xCE +#define PMCRAID_SYNC_COMPLETE_AFTER_CANCEL PMC_BIT8(0) + +/* HCAM command and types of HCAM supported by IOA */ +#define PMCRAID_HOST_CONTROLLED_ASYNC 0xCF +#define PMCRAID_HCAM_CODE_CONFIG_CHANGE 0x01 +#define PMCRAID_HCAM_CODE_LOG_DATA 0x02 + +/* IOA shutdown command and various shutdown types */ +#define PMCRAID_IOA_SHUTDOWN 0xF7 +#define PMCRAID_SHUTDOWN_NORMAL 0x00 +#define PMCRAID_SHUTDOWN_PREPARE_FOR_NORMAL 0x40 +#define PMCRAID_SHUTDOWN_NONE 0x100 +#define PMCRAID_SHUTDOWN_ABBREV 0x80 + +/* SET SUPPORTED DEVICES command and the option to select all the + * devices to be supported + */ +#define PMCRAID_SET_SUPPORTED_DEVICES 0xFB +#define ALL_DEVICES_SUPPORTED PMC_BIT8(0) + +/* This option is used with SCSI WRITE_BUFFER command */ +#define PMCRAID_WR_BUF_DOWNLOAD_AND_SAVE 0x05 + +/* IOASC Codes used by driver */ +#define PMCRAID_IOASC_SENSE_MASK 0xFFFFFF00 +#define PMCRAID_IOASC_SENSE_KEY(ioasc) ((ioasc) >> 24) +#define PMCRAID_IOASC_SENSE_CODE(ioasc) (((ioasc) & 0x00ff0000) >> 16) +#define PMCRAID_IOASC_SENSE_QUAL(ioasc) (((ioasc) & 0x0000ff00) >> 8) +#define PMCRAID_IOASC_SENSE_STATUS(ioasc) ((ioasc) & 0x000000ff) + +#define PMCRAID_IOASC_GOOD_COMPLETION 0x00000000 +#define PMCRAID_IOASC_NR_INIT_CMD_REQUIRED 0x02040200 +#define PMCRAID_IOASC_NR_IOA_RESET_REQUIRED 0x02048000 +#define PMCRAID_IOASC_NR_SYNC_REQUIRED 0x023F0000 +#define PMCRAID_IOASC_ME_READ_ERROR_NO_REALLOC 0x03110C00 +#define PMCRAID_IOASC_HW_CANNOT_COMMUNICATE 0x04050000 +#define PMCRAID_IOASC_HW_DEVICE_TIMEOUT 0x04080100 +#define PMCRAID_IOASC_HW_DEVICE_BUS_STATUS_ERROR 0x04448500 +#define PMCRAID_IOASC_HW_IOA_RESET_REQUIRED 0x04448600 +#define PMCRAID_IOASC_IR_INVALID_RESOURCE_HANDLE 0x05250000 +#define PMCRAID_IOASC_AC_TERMINATED_BY_HOST 0x0B5A0000 +#define PMCRAID_IOASC_UA_BUS_WAS_RESET 0x06290000 +#define PMCRAID_IOASC_UA_BUS_WAS_RESET_BY_OTHER 0x06298000 + +/* Driver defined IOASCs */ +#define PMCRAID_IOASC_IOA_WAS_RESET 0x10000001 +#define PMCRAID_IOASC_PCI_ACCESS_ERROR 0x10000002 + +/* Various timeout values (in milliseconds) used. If any of these are chip + * specific, move them to pmcraid_chip_details structure. + */ +#define PMCRAID_PCI_DEASSERT_TIMEOUT 2000 +#define PMCRAID_BIST_TIMEOUT 2000 +#define PMCRAID_AENWAIT_TIMEOUT 5000 +#define PMCRAID_TRANSOP_TIMEOUT 60000 + +#define PMCRAID_RESET_TIMEOUT (2 * HZ) +#define PMCRAID_CHECK_FOR_RESET_TIMEOUT ((HZ / 10)) +#define PMCRAID_VSET_IO_TIMEOUT (60 * HZ) +#define PMCRAID_INTERNAL_TIMEOUT (60 * HZ) +#define PMCRAID_SHUTDOWN_TIMEOUT (150 * HZ) +#define PMCRAID_RESET_BUS_TIMEOUT (60 * HZ) +#define PMCRAID_RESET_HOST_TIMEOUT (150 * HZ) +#define PMCRAID_REQUEST_SENSE_TIMEOUT (30 * HZ) +#define PMCRAID_SET_SUP_DEV_TIMEOUT (2 * 60 * HZ) + +/* structure to represent a scatter-gather element (IOADL descriptor) */ +struct pmcraid_ioadl_desc { + __le64 address; + __le32 data_len; + __u8 reserved[3]; + __u8 flags; +} __attribute__((packed, aligned(PMCRAID_IOADL_ALIGNMENT))); + +/* pmcraid_ioadl_desc.flags values */ +#define IOADL_FLAGS_CHAINED PMC_BIT8(0) +#define IOADL_FLAGS_LAST_DESC PMC_BIT8(1) +#define IOADL_FLAGS_READ_LAST PMC_BIT8(1) +#define IOADL_FLAGS_WRITE_LAST PMC_BIT8(1) + + +/* additional IOARCB data which can be CDB or additional request parameters + * or list of IOADLs. Firmware supports max of 512 bytes for IOARCB, hence then + * number of IOADLs are limted to 27. In case they are more than 27, they will + * be used in chained form + */ +struct pmcraid_ioarcb_add_data { + union { + struct pmcraid_ioadl_desc ioadl[PMCRAID_IOADLS_INTERNAL]; + __u8 add_cmd_params[PMCRAID_ADD_CMD_PARAM_LEN]; + } u; +}; + +/* + * IOA Request Control Block + */ +struct pmcraid_ioarcb { + __le64 ioarcb_bus_addr; + __le32 resource_handle; + __le32 response_handle; + __le64 ioadl_bus_addr; + __le32 ioadl_length; + __le32 data_transfer_length; + __le64 ioasa_bus_addr; + __le16 ioasa_len; + __le16 cmd_timeout; + __le16 add_cmd_param_offset; + __le16 add_cmd_param_length; + __le32 reserved1[2]; + __le32 reserved2; + __u8 request_type; + __u8 request_flags0; + __u8 request_flags1; + __u8 hrrq_id; + __u8 cdb[PMCRAID_MAX_CDB_LEN]; + struct pmcraid_ioarcb_add_data add_data; +} __attribute__((packed, aligned(PMCRAID_IOARCB_ALIGNMENT))); + +/* well known resource handle values */ +#define PMCRAID_IOA_RES_HANDLE 0xffffffff +#define PMCRAID_INVALID_RES_HANDLE 0 + +/* pmcraid_ioarcb.request_type values */ +#define REQ_TYPE_SCSI 0x00 +#define REQ_TYPE_IOACMD 0x01 +#define REQ_TYPE_HCAM 0x02 + +/* pmcraid_ioarcb.flags0 values */ +#define TRANSFER_DIR_WRITE PMC_BIT8(0) +#define INHIBIT_UL_CHECK PMC_BIT8(2) +#define SYNC_OVERRIDE PMC_BIT8(3) +#define SYNC_COMPLETE PMC_BIT8(4) +#define NO_LINK_DESCS PMC_BIT8(5) + +/* pmcraid_ioarcb.flags1 values */ +#define DELAY_AFTER_RESET PMC_BIT8(0) +#define TASK_TAG_SIMPLE 0x10 +#define TASK_TAG_ORDERED 0x20 +#define TASK_TAG_QUEUE_HEAD 0x30 + +/* toggle bit offset in response handle */ +#define HRRQ_TOGGLE_BIT 0x01 +#define HRRQ_RESPONSE_BIT 0x02 + +/* IOA Status Area */ +struct pmcraid_ioasa_vset { + __le32 failing_lba_hi; + __le32 failing_lba_lo; + __le32 reserved; +} __attribute__((packed, aligned(4))); + +struct pmcraid_ioasa { + __le32 ioasc; + __le16 returned_status_length; + __le16 available_status_length; + __le32 residual_data_length; + __le32 ilid; + __le32 fd_ioasc; + __le32 fd_res_address; + __le32 fd_res_handle; + __le32 reserved; + + /* resource specific sense information */ + union { + struct pmcraid_ioasa_vset vset; + } u; + + /* IOA autosense data */ + __le16 auto_sense_length; + __le16 error_data_length; + __u8 sense_data[PMCRAID_SENSE_DATA_LEN]; +} __attribute__((packed, aligned(4))); + +#define PMCRAID_DRIVER_ILID 0xffffffff + +/* Config Table Entry per Resource */ +struct pmcraid_config_table_entry { + __u8 resource_type; + __u8 bus_protocol; + __le16 array_id; + __u8 common_flags0; + __u8 common_flags1; + __u8 unique_flags0; + __u8 unique_flags1; /*also used as vset target_id */ + __le32 resource_handle; + __le32 resource_address; + __u8 device_id[PMCRAID_DEVICE_ID_LEN]; + __u8 lun[PMCRAID_LUN_LEN]; +} __attribute__((packed, aligned(4))); + +/* resource types (config_table_entry.resource_type values) */ +#define RES_TYPE_AF_DASD 0x00 +#define RES_TYPE_GSCSI 0x01 +#define RES_TYPE_VSET 0x02 +#define RES_TYPE_IOA_FP 0xFF + +#define RES_IS_IOA(res) ((res).resource_type == RES_TYPE_IOA_FP) +#define RES_IS_GSCSI(res) ((res).resource_type == RES_TYPE_GSCSI) +#define RES_IS_VSET(res) ((res).resource_type == RES_TYPE_VSET) +#define RES_IS_AFDASD(res) ((res).resource_type == RES_TYPE_AF_DASD) + +/* bus_protocol values used by driver */ +#define RES_TYPE_VENCLOSURE 0x8 + +/* config_table_entry.common_flags0 */ +#define MULTIPATH_RESOURCE PMC_BIT32(0) + +/* unique_flags1 */ +#define IMPORT_MODE_MANUAL PMC_BIT8(0) + +/* well known resource handle values */ +#define RES_HANDLE_IOA 0xFFFFFFFF +#define RES_HANDLE_NONE 0x00000000 + +/* well known resource address values */ +#define RES_ADDRESS_IOAFP 0xFEFFFFFF +#define RES_ADDRESS_INVALID 0xFFFFFFFF + +/* BUS/TARGET/LUN values from resource_addrr */ +#define RES_BUS(res_addr) (le32_to_cpu(res_addr) & 0xFF) +#define RES_TARGET(res_addr) ((le32_to_cpu(res_addr) >> 16) & 0xFF) +#define RES_LUN(res_addr) 0x0 + +/* configuration table structure */ +struct pmcraid_config_table { + __le16 num_entries; + __u8 table_format; + __u8 reserved1; + __u8 flags; + __u8 reserved2[11]; + struct pmcraid_config_table_entry entries[PMCRAID_MAX_RESOURCES]; +} __attribute__((packed, aligned(4))); + +/* config_table.flags value */ +#define MICROCODE_UPDATE_REQUIRED PMC_BIT32(0) + +/* + * HCAM format + */ +#define PMCRAID_HOSTRCB_LDNSIZE 4056 + +/* Error log notification format */ +struct pmcraid_hostrcb_error { + __le32 fd_ioasc; + __le32 fd_ra; + __le32 fd_rh; + __le32 prc; + union { + __u8 data[PMCRAID_HOSTRCB_LDNSIZE]; + } u; +} __attribute__ ((packed, aligned(4))); + +struct pmcraid_hcam_hdr { + __u8 op_code; + __u8 notification_type; + __u8 notification_lost; + __u8 flags; + __u8 overlay_id; + __u8 reserved1[3]; + __le32 ilid; + __le32 timestamp1; + __le32 timestamp2; + __le32 data_len; +} __attribute__((packed, aligned(4))); + +#define PMCRAID_AEN_GROUP 0x3 + +struct pmcraid_hcam_ccn { + struct pmcraid_hcam_hdr header; + struct pmcraid_config_table_entry cfg_entry; +} __attribute__((packed, aligned(4))); + +struct pmcraid_hcam_ldn { + struct pmcraid_hcam_hdr header; + struct pmcraid_hostrcb_error error_log; +} __attribute__((packed, aligned(4))); + +/* pmcraid_hcam.op_code values */ +#define HOSTRCB_TYPE_CCN 0xE1 +#define HOSTRCB_TYPE_LDN 0xE2 + +/* pmcraid_hcam.notification_type values */ +#define NOTIFICATION_TYPE_ENTRY_CHANGED 0x0 +#define NOTIFICATION_TYPE_ENTRY_NEW 0x1 +#define NOTIFICATION_TYPE_ENTRY_DELETED 0x2 +#define NOTIFICATION_TYPE_ERROR_LOG 0x10 +#define NOTIFICATION_TYPE_INFORMATION_LOG 0x11 + +#define HOSTRCB_NOTIFICATIONS_LOST PMC_BIT8(0) + +/* pmcraid_hcam.flags values */ +#define HOSTRCB_INTERNAL_OP_ERROR PMC_BIT8(0) +#define HOSTRCB_ERROR_RESPONSE_SENT PMC_BIT8(1) + +/* pmcraid_hcam.overlay_id values */ +#define HOSTRCB_OVERLAY_ID_08 0x08 +#define HOSTRCB_OVERLAY_ID_09 0x09 +#define HOSTRCB_OVERLAY_ID_11 0x11 +#define HOSTRCB_OVERLAY_ID_12 0x12 +#define HOSTRCB_OVERLAY_ID_13 0x13 +#define HOSTRCB_OVERLAY_ID_14 0x14 +#define HOSTRCB_OVERLAY_ID_16 0x16 +#define HOSTRCB_OVERLAY_ID_17 0x17 +#define HOSTRCB_OVERLAY_ID_20 0x20 +#define HOSTRCB_OVERLAY_ID_FF 0xFF + +/* Implementation specific card details */ +struct pmcraid_chip_details { + /* hardware register offsets */ + unsigned long ioastatus; + unsigned long ioarrin; + unsigned long mailbox; + unsigned long global_intr_mask; + unsigned long ioa_host_intr; + unsigned long ioa_host_intr_clr; + unsigned long ioa_host_mask; + unsigned long ioa_host_mask_clr; + unsigned long host_ioa_intr; + unsigned long host_ioa_intr_clr; + + /* timeout used during transitional to operational state */ + unsigned long transop_timeout; +}; + +/* IOA to HOST doorbells (interrupts) */ +#define INTRS_TRANSITION_TO_OPERATIONAL PMC_BIT32(0) +#define INTRS_IOARCB_TRANSFER_FAILED PMC_BIT32(3) +#define INTRS_IOA_UNIT_CHECK PMC_BIT32(4) +#define INTRS_NO_HRRQ_FOR_CMD_RESPONSE PMC_BIT32(5) +#define INTRS_CRITICAL_OP_IN_PROGRESS PMC_BIT32(6) +#define INTRS_IO_DEBUG_ACK PMC_BIT32(7) +#define INTRS_IOARRIN_LOST PMC_BIT32(27) +#define INTRS_SYSTEM_BUS_MMIO_ERROR PMC_BIT32(28) +#define INTRS_IOA_PROCESSOR_ERROR PMC_BIT32(29) +#define INTRS_HRRQ_VALID PMC_BIT32(30) +#define INTRS_OPERATIONAL_STATUS PMC_BIT32(0) + +/* Host to IOA Doorbells */ +#define DOORBELL_RUNTIME_RESET PMC_BIT32(1) +#define DOORBELL_IOA_RESET_ALERT PMC_BIT32(7) +#define DOORBELL_IOA_DEBUG_ALERT PMC_BIT32(9) +#define DOORBELL_ENABLE_DESTRUCTIVE_DIAGS PMC_BIT32(8) +#define DOORBELL_IOA_START_BIST PMC_BIT32(23) +#define DOORBELL_RESET_IOA PMC_BIT32(31) + +/* Global interrupt mask register value */ +#define GLOBAL_INTERRUPT_MASK 0x4ULL + +#define PMCRAID_ERROR_INTERRUPTS (INTRS_IOARCB_TRANSFER_FAILED | \ + INTRS_IOA_UNIT_CHECK | \ + INTRS_NO_HRRQ_FOR_CMD_RESPONSE | \ + INTRS_IOARRIN_LOST | \ + INTRS_SYSTEM_BUS_MMIO_ERROR | \ + INTRS_IOA_PROCESSOR_ERROR) + +#define PMCRAID_PCI_INTERRUPTS (PMCRAID_ERROR_INTERRUPTS | \ + INTRS_HRRQ_VALID | \ + INTRS_CRITICAL_OP_IN_PROGRESS |\ + INTRS_TRANSITION_TO_OPERATIONAL) + +/* control_block, associated with each of the commands contains IOARCB, IOADLs + * memory for IOASA. Additional 3 * 16 bytes are allocated in order to support + * additional request parameters (of max size 48) any command. + */ +struct pmcraid_control_block { + struct pmcraid_ioarcb ioarcb; + struct pmcraid_ioadl_desc ioadl[PMCRAID_IOADLS_EXTERNAL + 3]; + struct pmcraid_ioasa ioasa; +} __attribute__ ((packed, aligned(PMCRAID_IOARCB_ALIGNMENT))); + +/* pmcraid_sglist - Scatter-gather list allocated for passthrough ioctls + */ +struct pmcraid_sglist { + u32 order; + u32 num_sg; + u32 num_dma_sg; + u32 buffer_len; + struct scatterlist scatterlist[1]; +}; + +/* pmcraid_cmd - LLD representation of SCSI command */ +struct pmcraid_cmd { + + /* Ptr and bus address of DMA.able control block for this command */ + struct pmcraid_control_block *ioa_cb; + dma_addr_t ioa_cb_bus_addr; + + /* sense buffer for REQUEST SENSE command if firmware is not sending + * auto sense data + */ + dma_addr_t sense_buffer_dma; + dma_addr_t dma_handle; + u8 *sense_buffer; + + /* pointer to mid layer structure of SCSI commands */ + struct scsi_cmnd *scsi_cmd; + + struct list_head free_list; + struct completion wait_for_completion; + struct timer_list timer; /* needed for internal commands */ + u32 timeout; /* current timeout value */ + u32 index; /* index into the command list */ + u8 completion_req; /* for handling internal commands */ + u8 release; /* for handling completions */ + + void (*cmd_done) (struct pmcraid_cmd *); + struct pmcraid_instance *drv_inst; + + struct pmcraid_sglist *sglist; /* used for passthrough IOCTLs */ + + /* scratch used during reset sequence */ + union { + unsigned long time_left; + struct pmcraid_resource_entry *res; + } u; +}; + +/* + * Interrupt registers of IOA + */ +struct pmcraid_interrupts { + void __iomem *ioa_host_interrupt_reg; + void __iomem *ioa_host_interrupt_clr_reg; + void __iomem *ioa_host_interrupt_mask_reg; + void __iomem *ioa_host_interrupt_mask_clr_reg; + void __iomem *global_interrupt_mask_reg; + void __iomem *host_ioa_interrupt_reg; + void __iomem *host_ioa_interrupt_clr_reg; +}; + +/* ISR parameters LLD allocates (one for each MSI-X if enabled) vectors */ +struct pmcraid_isr_param { + u8 hrrq_id; /* hrrq entry index */ + u16 vector; /* allocated msi-x vector */ + struct pmcraid_instance *drv_inst; +}; + +/* AEN message header sent as part of event data to applications */ +struct pmcraid_aen_msg { + u32 hostno; + u32 length; + u8 reserved[8]; + u8 data[0]; +}; + +struct pmcraid_hostrcb { + struct pmcraid_instance *drv_inst; + struct pmcraid_aen_msg *msg; + struct pmcraid_hcam_hdr *hcam; /* pointer to hcam buffer */ + struct pmcraid_cmd *cmd; /* pointer to command block used */ + dma_addr_t baddr; /* system address of hcam buffer */ + atomic_t ignore; /* process HCAM response ? */ +}; + +#define PMCRAID_AEN_HDR_SIZE sizeof(struct pmcraid_aen_msg) + + + +/* + * Per adapter structure maintained by LLD + */ +struct pmcraid_instance { + /* Array of allowed-to-be-exposed resources, initialized from + * Configutation Table, later updated with CCNs + */ + struct pmcraid_resource_entry *res_entries; + + struct list_head free_res_q; /* res_entries lists for easy lookup */ + struct list_head used_res_q; /* List of to be exposed resources */ + spinlock_t resource_lock; /* spinlock to protect resource list */ + + void __iomem *mapped_dma_addr; + void __iomem *ioa_status; /* Iomapped IOA status register */ + void __iomem *mailbox; /* Iomapped mailbox register */ + void __iomem *ioarrin; /* IOmapped IOARR IN register */ + + struct pmcraid_interrupts int_regs; + struct pmcraid_chip_details *chip_cfg; + + /* HostRCBs needed for HCAM */ + struct pmcraid_hostrcb ldn; + struct pmcraid_hostrcb ccn; + + + /* Bus address of start of HRRQ */ + dma_addr_t hrrq_start_bus_addr[PMCRAID_NUM_MSIX_VECTORS]; + + /* Pointer to 1st entry of HRRQ */ + __be32 *hrrq_start[PMCRAID_NUM_MSIX_VECTORS]; + + /* Pointer to last entry of HRRQ */ + __be32 *hrrq_end[PMCRAID_NUM_MSIX_VECTORS]; + + /* Pointer to current pointer of hrrq */ + __be32 *hrrq_curr[PMCRAID_NUM_MSIX_VECTORS]; + + /* Lock for HRRQ access */ + spinlock_t hrrq_lock[PMCRAID_NUM_MSIX_VECTORS]; + + /* Expected toggle bit at host */ + u8 host_toggle_bit[PMCRAID_NUM_MSIX_VECTORS]; + + /* No of Reset IOA retries . IOA marked dead if threshold exceeds */ + u8 ioa_reset_attempts; +#define PMCRAID_RESET_ATTEMPTS 3 + + /* Wait Q for threads to wait for Reset IOA completion */ + wait_queue_head_t reset_wait_q; + struct pmcraid_cmd *reset_cmd; + + /* structures for supporting SIGIO based AEN. */ + struct fasync_struct *aen_queue; + struct mutex aen_queue_lock; /* lock for aen subscribers list */ + struct cdev cdev; + + struct Scsi_Host *host; /* mid layer interface structure handle */ + struct pci_dev *pdev; /* PCI device structure handle */ + + u8 current_log_level; /* default level for logging IOASC errors */ + + u8 num_hrrq; /* Number of interrupt vectors allocated */ + dev_t dev; /* Major-Minor numbers for Char device */ + + /* Used as ISR handler argument */ + struct pmcraid_isr_param hrrq_vector[PMCRAID_NUM_MSIX_VECTORS]; + + /* configuration table */ + struct pmcraid_config_table *cfg_table; + dma_addr_t cfg_table_bus_addr; + + /* structures related to command blocks */ + struct kmem_cache *cmd_cachep; /* cache for cmd blocks */ + struct pci_pool *control_pool; /* pool for control blocks */ + char cmd_pool_name[64]; /* name of cmd cache */ + char ctl_pool_name[64]; /* name of control cache */ + + struct pmcraid_cmd *cmd_list[PMCRAID_MAX_CMD]; + + struct list_head free_cmd_pool; + struct list_head pending_cmd_pool; + spinlock_t free_pool_lock; /* free pool lock */ + spinlock_t pending_pool_lock; /* pending pool lock */ + + /* No of IO commands pending with FW */ + atomic_t outstanding_cmds; + + /* should add/delete resources to mid-layer now ?*/ + atomic_t expose_resources; + + /* Tasklet to handle deferred processing */ + struct tasklet_struct isr_tasklet[PMCRAID_NUM_MSIX_VECTORS]; + + /* Work-queue (Shared) for deferred reset processing */ + struct work_struct worker_q; + + + u32 ioa_state:4; /* For IOA Reset sequence FSM */ +#define IOA_STATE_OPERATIONAL 0x0 +#define IOA_STATE_UNKNOWN 0x1 +#define IOA_STATE_DEAD 0x2 +#define IOA_STATE_IN_SOFT_RESET 0x3 +#define IOA_STATE_IN_HARD_RESET 0x4 +#define IOA_STATE_IN_RESET_ALERT 0x5 +#define IOA_STATE_IN_BRINGDOWN 0x6 +#define IOA_STATE_IN_BRINGUP 0x7 + + u32 ioa_reset_in_progress:1; /* true if IOA reset is in progress */ + u32 ioa_hard_reset:1; /* TRUE if Hard Reset is needed */ + u32 ioa_unit_check:1; /* Indicates Unit Check condition */ + u32 ioa_bringdown:1; /* whether IOA needs to be brought down */ + u32 force_ioa_reset:1; /* force adapter reset ? */ + u32 reinit_cfg_table:1; /* reinit config table due to lost CCN */ + u32 ioa_shutdown_type:2;/* shutdown type used during reset */ +#define SHUTDOWN_NONE 0x0 +#define SHUTDOWN_NORMAL 0x1 +#define SHUTDOWN_ABBREV 0x2 + +}; + +/* LLD maintained resource entry structure */ +struct pmcraid_resource_entry { + struct list_head queue; /* link to "to be exposed" resources */ + struct pmcraid_config_table_entry cfg_entry; + struct scsi_device *scsi_dev; /* Link scsi_device structure */ + atomic_t read_failures; /* count of failed READ commands */ + atomic_t write_failures; /* count of failed WRITE commands */ + + /* To indicate add/delete/modify during CCN */ + u8 change_detected; +#define RES_CHANGE_ADD 0x1 /* add this to mid-layer */ +#define RES_CHANGE_DEL 0x2 /* remove this from mid-layer */ + + u8 reset_progress; /* Device is resetting */ + + /* + * When IOA asks for sync (i.e. IOASC = Not Ready, Sync Required), this + * flag will be set, mid layer will be asked to retry. In the next + * attempt, this flag will be checked in queuecommand() to set + * SYNC_COMPLETE flag in IOARCB (flag_0). + */ + u8 sync_reqd; + + /* target indicates the mapped target_id assigned to this resource if + * this is VSET resource. For non-VSET resources this will be un-used + * or zero + */ + u8 target; +}; + +/* Data structures used in IOASC error code logging */ +struct pmcraid_ioasc_error { + u32 ioasc_code; /* IOASC code */ + u8 log_level; /* default log level assignment. */ + char *error_string; +}; + +/* Initial log_level assignments for various IOASCs */ +#define IOASC_LOG_LEVEL_NONE 0x0 /* no logging */ +#define IOASC_LOG_LEVEL_MUST 0x1 /* must log: all high-severity errors */ +#define IOASC_LOG_LEVEL_HARD 0x2 /* optional – low severity errors */ + +/* Error information maintained by LLD. LLD initializes the pmcraid_error_table + * statically. + */ +static struct pmcraid_ioasc_error pmcraid_ioasc_error_table[] = { + {0x01180600, IOASC_LOG_LEVEL_MUST, + "Recovered Error, soft media error, sector reassignment suggested"}, + {0x015D0000, IOASC_LOG_LEVEL_MUST, + "Recovered Error, failure prediction thresold exceeded"}, + {0x015D9200, IOASC_LOG_LEVEL_MUST, + "Recovered Error, soft Cache Card Battery error thresold"}, + {0x015D9200, IOASC_LOG_LEVEL_MUST, + "Recovered Error, soft Cache Card Battery error thresold"}, + {0x02048000, IOASC_LOG_LEVEL_MUST, + "Not Ready, IOA Reset Required"}, + {0x02408500, IOASC_LOG_LEVEL_MUST, + "Not Ready, IOA microcode download required"}, + {0x03110B00, IOASC_LOG_LEVEL_MUST, + "Medium Error, data unreadable, reassignment suggested"}, + {0x03110C00, IOASC_LOG_LEVEL_MUST, + "Medium Error, data unreadable do not reassign"}, + {0x03310000, IOASC_LOG_LEVEL_MUST, + "Medium Error, media corrupted"}, + {0x04050000, IOASC_LOG_LEVEL_MUST, + "Hardware Error, IOA can't communicate with device"}, + {0x04080000, IOASC_LOG_LEVEL_MUST, + "Hardware Error, device bus error"}, + {0x04080000, IOASC_LOG_LEVEL_MUST, + "Hardware Error, device bus is not functioning"}, + {0x04118000, IOASC_LOG_LEVEL_MUST, + "Hardware Error, IOA reserved area data check"}, + {0x04118100, IOASC_LOG_LEVEL_MUST, + "Hardware Error, IOA reserved area invalid data pattern"}, + {0x04118200, IOASC_LOG_LEVEL_MUST, + "Hardware Error, IOA reserved area LRC error"}, + {0x04320000, IOASC_LOG_LEVEL_MUST, + "Hardware Error, reassignment space exhausted"}, + {0x04330000, IOASC_LOG_LEVEL_MUST, + "Hardware Error, data transfer underlength error"}, + {0x04330000, IOASC_LOG_LEVEL_MUST, + "Hardware Error, data transfer overlength error"}, + {0x04418000, IOASC_LOG_LEVEL_MUST, + "Hardware Error, PCI bus error"}, + {0x04440000, IOASC_LOG_LEVEL_MUST, + "Hardware Error, device error"}, + {0x04448300, IOASC_LOG_LEVEL_MUST, + "Hardware Error, undefined device response"}, + {0x04448400, IOASC_LOG_LEVEL_MUST, + "Hardware Error, IOA microcode error"}, + {0x04448600, IOASC_LOG_LEVEL_MUST, + "Hardware Error, IOA reset required"}, + {0x04449200, IOASC_LOG_LEVEL_MUST, + "Hardware Error, hard Cache Fearuee Card Battery error"}, + {0x0444A000, IOASC_LOG_LEVEL_MUST, + "Hardware Error, failed device altered"}, + {0x0444A200, IOASC_LOG_LEVEL_MUST, + "Hardware Error, data check after reassignment"}, + {0x0444A300, IOASC_LOG_LEVEL_MUST, + "Hardware Error, LRC error after reassignment"}, + {0x044A0000, IOASC_LOG_LEVEL_MUST, + "Hardware Error, device bus error (msg/cmd phase)"}, + {0x04670400, IOASC_LOG_LEVEL_MUST, + "Hardware Error, new device can't be used"}, + {0x04678000, IOASC_LOG_LEVEL_MUST, + "Hardware Error, invalid multiadapter configuration"}, + {0x04678100, IOASC_LOG_LEVEL_MUST, + "Hardware Error, incorrect connection between enclosures"}, + {0x04678200, IOASC_LOG_LEVEL_MUST, + "Hardware Error, connections exceed IOA design limits"}, + {0x04678300, IOASC_LOG_LEVEL_MUST, + "Hardware Error, incorrect multipath connection"}, + {0x04679000, IOASC_LOG_LEVEL_MUST, + "Hardware Error, command to LUN failed"}, + {0x064C8000, IOASC_LOG_LEVEL_HARD, + "Unit Attention, cache exists for missing/failed device"}, + {0x06670100, IOASC_LOG_LEVEL_HARD, + "Unit Attention, incompatible exposed mode device"}, + {0x06670600, IOASC_LOG_LEVEL_HARD, + "Unit Attention, attachment of logical unit failed"}, + {0x06678000, IOASC_LOG_LEVEL_MUST, + "Unit Attention, cables exceed connective design limit"}, + {0x06678300, IOASC_LOG_LEVEL_MUST, + "Unit Attention, incomplete multipath connection between" \ + "IOA and enclosure"}, + {0x06678400, IOASC_LOG_LEVEL_MUST, + "Unit Attention, incomplete multipath connection between" \ + "device and enclosure"}, + {0x06678500, IOASC_LOG_LEVEL_MUST, + "Unit Attention, incomplete multipath connection between" \ + "IOA and remote IOA"}, + {0x06678600, IOASC_LOG_LEVEL_HARD, + "Unit Attention, missing remote IOA"}, + {0x06679100, IOASC_LOG_LEVEL_HARD, + "Unit Attention, enclosure doesn't support required multipath" \ + "function"}, + {0x06698200, IOASC_LOG_LEVEL_HARD, + "Unit Attention, corrupt array parity detected on device"}, + {0x066B0200, IOASC_LOG_LEVEL_MUST, + "Unit Attention, array exposed"}, + {0x066B8200, IOASC_LOG_LEVEL_HARD, + "Unit Attention, exposed array is still protected"}, + {0x066B9200, IOASC_LOG_LEVEL_MUST, + "Unit Attention, Multipath redundancy level got worse"}, + {0x07270000, IOASC_LOG_LEVEL_HARD, + "Data Protect, device is read/write protected by IOA"}, + {0x07278000, IOASC_LOG_LEVEL_HARD, + "Data Protect, IOA doesn't support device attribute"}, + {0x07278100, IOASC_LOG_LEVEL_HARD, + "Data Protect, NVRAM mirroring prohibited"}, + {0x07278400, IOASC_LOG_LEVEL_MUST, + "Data Protect, array is short 2 or more devices"}, + {0x07278600, IOASC_LOG_LEVEL_MUST, + "Data Protect, exposed array is short a required device"}, + {0x07278700, IOASC_LOG_LEVEL_MUST, + "Data Protect, array members not at required addresses"}, + {0x07278800, IOASC_LOG_LEVEL_MUST, + "Data Protect, exposed mode device resource address conflict"}, + {0x07278900, IOASC_LOG_LEVEL_MUST, + "Data Protect, incorrect resource address of exposed mode device"}, + {0x07278A00, IOASC_LOG_LEVEL_MUST, + "Data Protect, Array is missing a device and parity is out of sync"}, + {0x07278B00, IOASC_LOG_LEVEL_MUST, + "Data Protect, maximum number of arrays already exist"}, + {0x07278C00, IOASC_LOG_LEVEL_HARD, + "Data Protect, cannot locate cache data for device"}, + {0x07278D00, IOASC_LOG_LEVEL_HARD, + "Data Protect, cache data exits for a changed device"}, + {0x07279100, IOASC_LOG_LEVEL_MUST, + "Data Protect, detection of a device requiring format"}, + {0x07279200, IOASC_LOG_LEVEL_MUST, + "Data Protect, IOA exceeds maximum number of devices"}, + {0x07279600, IOASC_LOG_LEVEL_MUST, + "Data Protect, missing array, volume set is not functional"}, + {0x07279700, IOASC_LOG_LEVEL_MUST, + "Data Protect, single device for a volume set"}, + {0x07279800, IOASC_LOG_LEVEL_MUST, + "Data Protect, missing multiple devices for a volume set"}, + {0x07279900, IOASC_LOG_LEVEL_HARD, + "Data Protect, maximum number of volument sets already exists"}, + {0x07279A00, IOASC_LOG_LEVEL_MUST, + "Data Protect, other volume set problem"}, +}; + +/* macros to help in debugging */ +#define pmcraid_err(...) \ + printk(KERN_ERR "MaxRAID: "__VA_ARGS__) + +#define pmcraid_info(...) \ + if (pmcraid_debug_log) \ + printk(KERN_INFO "MaxRAID: "__VA_ARGS__) + +/* check if given command is a SCSI READ or SCSI WRITE command */ +#define SCSI_READ_CMD 0x1 /* any of SCSI READ commands */ +#define SCSI_WRITE_CMD 0x2 /* any of SCSI WRITE commands */ +#define SCSI_CMD_TYPE(opcode) \ +({ u8 op = opcode; u8 __type = 0;\ + if (op == READ_6 || op == READ_10 || op == READ_12 || op == READ_16)\ + __type = SCSI_READ_CMD;\ + else if (op == WRITE_6 || op == WRITE_10 || op == WRITE_12 || \ + op == WRITE_16)\ + __type = SCSI_WRITE_CMD;\ + __type;\ +}) + +#define IS_SCSI_READ_WRITE(opcode) \ +({ u8 __type = SCSI_CMD_TYPE(opcode); \ + (__type == SCSI_READ_CMD || __type == SCSI_WRITE_CMD) ? 1 : 0;\ +}) + + +/* + * pmcraid_ioctl_header - definition of header structure that preceeds all the + * buffers given as ioctl arguements. + * + * .signature : always ASCII string, "PMCRAID" + * .reserved : not used + * .buffer_length : length of the buffer following the header + */ +struct pmcraid_ioctl_header { + u8 signature[8]; + u32 reserved; + u32 buffer_length; +}; + +#define PMCRAID_IOCTL_SIGNATURE "PMCRAID" + + +/* + * pmcraid_event_details - defines AEN details that apps can retrieve from LLD + * + * .rcb_ccn - complete RCB of CCN + * .rcb_ldn - complete RCB of CCN + */ +struct pmcraid_event_details { + struct pmcraid_hcam_ccn rcb_ccn; + struct pmcraid_hcam_ldn rcb_ldn; +}; + +/* + * pmcraid_driver_ioctl_buffer - structure passed as argument to most of the + * PMC driver handled ioctls. + */ +struct pmcraid_driver_ioctl_buffer { + struct pmcraid_ioctl_header ioctl_header; + struct pmcraid_event_details event_details; +}; + +/* + * pmcraid_passthrough_ioctl_buffer - structure given as argument to + * passthrough(or firmware handled) IOCTL commands. Note that ioarcb requires + * 32-byte alignment so, it is necessary to pack this structure to avoid any + * holes between ioctl_header and passthrough buffer + * + * .ioactl_header : ioctl header + * .ioarcb : filled-up ioarcb buffer, driver always reads this buffer + * .ioasa : buffer for ioasa, driver fills this with IOASA from firmware + * .request_buffer: The I/O buffer (flat), driver reads/writes to this based on + * the transfer directions passed in ioarcb.flags0. Contents + * of this buffer are valid only when ioarcb.data_transfer_len + * is not zero. + */ +struct pmcraid_passthrough_ioctl_buffer { + struct pmcraid_ioctl_header ioctl_header; + struct pmcraid_ioarcb ioarcb; + struct pmcraid_ioasa ioasa; + u8 request_buffer[1]; +} __attribute__ ((packed)); + +/* + * keys to differentiate between driver handled IOCTLs and passthrough + * IOCTLs passed to IOA. driver determines the ioctl type using macro + * _IOC_TYPE + */ +#define PMCRAID_DRIVER_IOCTL 'D' +#define PMCRAID_PASSTHROUGH_IOCTL 'F' + +#define DRV_IOCTL(n, size) \ + _IOC(_IOC_READ|_IOC_WRITE, PMCRAID_DRIVER_IOCTL, (n), (size)) + +#define FMW_IOCTL(n, size) \ + _IOC(_IOC_READ|_IOC_WRITE, PMCRAID_PASSTHROUGH_IOCTL, (n), (size)) + +/* + * _ARGSIZE: macro that gives size of the argument type passed to an IOCTL cmd. + * This is to facilitate applications avoiding un-necessary memory allocations. + * For example, most of driver handled ioctls do not require ioarcb, ioasa. + */ +#define _ARGSIZE(arg) (sizeof(struct pmcraid_ioctl_header) + sizeof(arg)) + +/* Driver handled IOCTL command definitions */ + +#define PMCRAID_IOCTL_RESET_ADAPTER \ + DRV_IOCTL(5, sizeof(struct pmcraid_ioctl_header)) + +/* passthrough/firmware handled commands */ +#define PMCRAID_IOCTL_PASSTHROUGH_COMMAND \ + FMW_IOCTL(1, sizeof(struct pmcraid_passthrough_ioctl_buffer)) + +#define PMCRAID_IOCTL_DOWNLOAD_MICROCODE \ + FMW_IOCTL(2, sizeof(struct pmcraid_passthrough_ioctl_buffer)) + + +#endif /* _PMCRAID_H */ diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c index 0f87962..fbcb82a 100644 --- a/drivers/scsi/qla2xxx/qla_attr.c +++ b/drivers/scsi/qla2xxx/qla_attr.c @@ -1670,7 +1670,7 @@ qla24xx_vport_create(struct fc_vport *fc_vport, bool disable) qla24xx_vport_disable(fc_vport, disable); - if (ql2xmultique_tag) { + if (ha->flags.cpu_affinity_enabled) { req = ha->req_q_map[1]; goto vport_queue; } else if (ql2xmaxqueues == 1 || !ha->npiv_info) @@ -1736,6 +1736,11 @@ qla24xx_vport_delete(struct fc_vport *fc_vport) qla24xx_deallocate_vp_id(vha); + mutex_lock(&ha->vport_lock); + ha->cur_vport_count--; + clear_bit(vha->vp_idx, ha->vp_idx_map); + mutex_unlock(&ha->vport_lock); + if (vha->timer_active) { qla2x00_vp_stop_timer(vha); DEBUG15(printk ("scsi(%ld): timer for the vport[%d] = %p " @@ -1743,7 +1748,7 @@ qla24xx_vport_delete(struct fc_vport *fc_vport) vha->host_no, vha->vp_idx, vha)); } - if (vha->req->id && !ql2xmultique_tag) { + if (vha->req->id && !ha->flags.cpu_affinity_enabled) { if (qla25xx_delete_req_que(vha, vha->req) != QLA_SUCCESS) qla_printk(KERN_WARNING, ha, "Queue delete failed.\n"); diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 00aa48d..2150618 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -189,6 +189,7 @@ struct req_que; */ typedef struct srb { struct fc_port *fcport; + uint32_t handle; struct scsi_cmnd *cmd; /* Linux SCSI command pkt */ @@ -196,6 +197,8 @@ typedef struct srb { uint32_t request_sense_length; uint8_t *request_sense_ptr; + + void *ctx; } srb_t; /* @@ -204,6 +207,28 @@ typedef struct srb { #define SRB_DMA_VALID BIT_0 /* Command sent to ISP */ /* + * SRB extensions. + */ +struct srb_ctx { +#define SRB_LOGIN_CMD 1 +#define SRB_LOGOUT_CMD 2 + uint16_t type; + struct timer_list timer; + + void (*free)(srb_t *sp); + void (*timeout)(srb_t *sp); +}; + +struct srb_logio { + struct srb_ctx ctx; + +#define SRB_LOGIN_RETRIED BIT_0 +#define SRB_LOGIN_COND_PLOGI BIT_1 +#define SRB_LOGIN_SKIP_PRLI BIT_2 + uint16_t flags; +}; + +/* * ISP I/O Register Set structure definitions. */ struct device_reg_2xxx { @@ -1482,7 +1507,7 @@ typedef union { uint8_t domain; uint8_t area; uint8_t al_pa; -#elif __LITTLE_ENDIAN +#elif defined(__LITTLE_ENDIAN) uint8_t al_pa; uint8_t area; uint8_t domain; @@ -1565,6 +1590,7 @@ typedef struct fc_port { #define FCF_FABRIC_DEVICE BIT_0 #define FCF_LOGIN_NEEDED BIT_1 #define FCF_TAPE_PRESENT BIT_2 +#define FCF_FCP2_DEVICE BIT_3 /* No loop ID flag. */ #define FC_NO_LOOP_ID 0x1000 @@ -2093,6 +2119,10 @@ struct qla_msix_entry { enum qla_work_type { QLA_EVT_AEN, QLA_EVT_IDC_ACK, + QLA_EVT_ASYNC_LOGIN, + QLA_EVT_ASYNC_LOGIN_DONE, + QLA_EVT_ASYNC_LOGOUT, + QLA_EVT_ASYNC_LOGOUT_DONE, }; @@ -2111,6 +2141,11 @@ struct qla_work_evt { #define QLA_IDC_ACK_REGS 7 uint16_t mb[QLA_IDC_ACK_REGS]; } idc_ack; + struct { + struct fc_port *fcport; +#define QLA_LOGIO_LOGIN_RETRIED BIT_0 + u16 data[2]; + } logio; } u; }; @@ -2224,6 +2259,7 @@ struct qla_hw_data { uint32_t chip_reset_done :1; uint32_t port0 :1; uint32_t running_gold_fw :1; + uint32_t cpu_affinity_enabled :1; } flags; /* This spinlock is used to protect "io transactions", you must @@ -2350,6 +2386,7 @@ struct qla_hw_data { (ha)->flags.msix_enabled) #define IS_FAC_REQUIRED(ha) (IS_QLA81XX(ha)) #define IS_NOCACHE_VPD_TYPE(ha) (IS_QLA81XX(ha)) +#define IS_ALOGIO_CAPABLE(ha) (IS_QLA23XX(ha) || IS_FWI2_CAPABLE(ha)) #define IS_IIDMA_CAPABLE(ha) ((ha)->device_type & DT_IIDMA) #define IS_FWI2_CAPABLE(ha) ((ha)->device_type & DT_FWI2) diff --git a/drivers/scsi/qla2xxx/qla_fw.h b/drivers/scsi/qla2xxx/qla_fw.h index dfde2dd..66a8da5 100644 --- a/drivers/scsi/qla2xxx/qla_fw.h +++ b/drivers/scsi/qla2xxx/qla_fw.h @@ -1126,7 +1126,7 @@ struct vp_config_entry_24xx { uint16_t id; uint16_t reserved_4; uint16_t hopct; - uint8_t reserved_5; + uint8_t reserved_5[2]; }; #define VP_RPT_ID_IOCB_TYPE 0x32 /* Report ID Acquisition entry. */ diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index 65b12d8..f3d1d1a 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -52,6 +52,14 @@ extern void qla2x00_try_to_stop_firmware(scsi_qla_host_t *); extern void qla84xx_put_chip(struct scsi_qla_host *); +extern int qla2x00_async_login(struct scsi_qla_host *, fc_port_t *, + uint16_t *); +extern int qla2x00_async_logout(struct scsi_qla_host *, fc_port_t *); +extern int qla2x00_async_login_done(struct scsi_qla_host *, fc_port_t *, + uint16_t *); +extern int qla2x00_async_logout_done(struct scsi_qla_host *, fc_port_t *, + uint16_t *); + /* * Global Data in qla_os.c source file. */ @@ -76,6 +84,15 @@ extern void qla2x00_abort_all_cmds(scsi_qla_host_t *, int); extern int qla2x00_post_aen_work(struct scsi_qla_host *, enum fc_host_event_code, u32); extern int qla2x00_post_idc_ack_work(struct scsi_qla_host *, uint16_t *); +extern int qla2x00_post_async_login_work(struct scsi_qla_host *, fc_port_t *, + uint16_t *); +extern int qla2x00_post_async_login_done_work(struct scsi_qla_host *, + fc_port_t *, uint16_t *); +extern int qla2x00_post_async_logout_work(struct scsi_qla_host *, fc_port_t *, + uint16_t *); +extern int qla2x00_post_async_logout_done_work(struct scsi_qla_host *, + fc_port_t *, uint16_t *); + extern int qla81xx_restart_mpi_firmware(scsi_qla_host_t *); extern void qla2x00_abort_fcport_cmds(fc_port_t *); @@ -83,6 +100,8 @@ extern struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *, struct qla_hw_data *); extern void qla2x00_free_host(struct scsi_qla_host *); extern void qla2x00_relogin(struct scsi_qla_host *); +extern void qla2x00_do_work(struct scsi_qla_host *); + /* * Global Functions in qla_mid.c source file. */ @@ -135,6 +154,7 @@ int qla2x00_marker(struct scsi_qla_host *, struct req_que *, struct rsp_que *, uint16_t, uint16_t, uint8_t); int __qla2x00_marker(struct scsi_qla_host *, struct req_que *, struct rsp_que *, uint16_t, uint16_t, uint8_t); +extern int qla2x00_start_sp(srb_t *); /* * Global Function Prototypes in qla_mbx.c source file. diff --git a/drivers/scsi/qla2xxx/qla_gs.c b/drivers/scsi/qla2xxx/qla_gs.c index 917534b..4647015 100644 --- a/drivers/scsi/qla2xxx/qla_gs.c +++ b/drivers/scsi/qla2xxx/qla_gs.c @@ -1674,6 +1674,10 @@ int qla2x00_fdmi_register(scsi_qla_host_t *vha) { int rval; + struct qla_hw_data *ha = vha->hw; + + if (IS_QLA2100(ha) || IS_QLA2200(ha)) + return QLA_FUNCTION_FAILED; rval = qla2x00_mgmt_svr_login(vha); if (rval) diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index f2ce8e3..9e3eaac 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -40,6 +40,210 @@ static struct qla_chip_state_84xx *qla84xx_get_chip(struct scsi_qla_host *); static int qla84xx_init_chip(scsi_qla_host_t *); static int qla25xx_init_queues(struct qla_hw_data *); +/* SRB Extensions ---------------------------------------------------------- */ + +static void +qla2x00_ctx_sp_timeout(unsigned long __data) +{ + srb_t *sp = (srb_t *)__data; + struct srb_ctx *ctx; + fc_port_t *fcport = sp->fcport; + struct qla_hw_data *ha = fcport->vha->hw; + struct req_que *req; + unsigned long flags; + + spin_lock_irqsave(&ha->hardware_lock, flags); + req = ha->req_q_map[0]; + req->outstanding_cmds[sp->handle] = NULL; + ctx = sp->ctx; + ctx->timeout(sp); + spin_unlock_irqrestore(&ha->hardware_lock, flags); + + ctx->free(sp); +} + +static void +qla2x00_ctx_sp_free(srb_t *sp) +{ + struct srb_ctx *ctx = sp->ctx; + + kfree(ctx); + mempool_free(sp, sp->fcport->vha->hw->srb_mempool); +} + +inline srb_t * +qla2x00_get_ctx_sp(scsi_qla_host_t *vha, fc_port_t *fcport, size_t size, + unsigned long tmo) +{ + srb_t *sp; + struct qla_hw_data *ha = vha->hw; + struct srb_ctx *ctx; + + sp = mempool_alloc(ha->srb_mempool, GFP_KERNEL); + if (!sp) + goto done; + ctx = kzalloc(size, GFP_KERNEL); + if (!ctx) { + mempool_free(sp, ha->srb_mempool); + goto done; + } + + memset(sp, 0, sizeof(*sp)); + sp->fcport = fcport; + sp->ctx = ctx; + ctx->free = qla2x00_ctx_sp_free; + + init_timer(&ctx->timer); + if (!tmo) + goto done; + ctx->timer.expires = jiffies + tmo * HZ; + ctx->timer.data = (unsigned long)sp; + ctx->timer.function = qla2x00_ctx_sp_timeout; + add_timer(&ctx->timer); +done: + return sp; +} + +/* Asynchronous Login/Logout Routines -------------------------------------- */ + +#define ELS_TMO_2_RATOV(ha) ((ha)->r_a_tov / 10 * 2) + +static void +qla2x00_async_logio_timeout(srb_t *sp) +{ + fc_port_t *fcport = sp->fcport; + struct srb_logio *lio = sp->ctx; + + DEBUG2(printk(KERN_WARNING + "scsi(%ld:%x): Async-%s timeout.\n", + fcport->vha->host_no, sp->handle, + lio->ctx.type == SRB_LOGIN_CMD ? "login": "logout")); + + if (lio->ctx.type == SRB_LOGIN_CMD) + qla2x00_post_async_logout_work(fcport->vha, fcport, NULL); +} + +int +qla2x00_async_login(struct scsi_qla_host *vha, fc_port_t *fcport, + uint16_t *data) +{ + struct qla_hw_data *ha = vha->hw; + srb_t *sp; + struct srb_logio *lio; + int rval; + + rval = QLA_FUNCTION_FAILED; + sp = qla2x00_get_ctx_sp(vha, fcport, sizeof(struct srb_logio), + ELS_TMO_2_RATOV(ha) + 2); + if (!sp) + goto done; + + lio = sp->ctx; + lio->ctx.type = SRB_LOGIN_CMD; + lio->ctx.timeout = qla2x00_async_logio_timeout; + lio->flags |= SRB_LOGIN_COND_PLOGI; + if (data[1] & QLA_LOGIO_LOGIN_RETRIED) + lio->flags |= SRB_LOGIN_RETRIED; + rval = qla2x00_start_sp(sp); + if (rval != QLA_SUCCESS) + goto done_free_sp; + + DEBUG2(printk(KERN_DEBUG + "scsi(%ld:%x): Async-login - loop-id=%x portid=%02x%02x%02x " + "retries=%d.\n", fcport->vha->host_no, sp->handle, fcport->loop_id, + fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa, + fcport->login_retry)); + return rval; + +done_free_sp: + del_timer_sync(&lio->ctx.timer); + lio->ctx.free(sp); +done: + return rval; +} + +int +qla2x00_async_logout(struct scsi_qla_host *vha, fc_port_t *fcport) +{ + struct qla_hw_data *ha = vha->hw; + srb_t *sp; + struct srb_logio *lio; + int rval; + + rval = QLA_FUNCTION_FAILED; + sp = qla2x00_get_ctx_sp(vha, fcport, sizeof(struct srb_logio), + ELS_TMO_2_RATOV(ha) + 2); + if (!sp) + goto done; + + lio = sp->ctx; + lio->ctx.type = SRB_LOGOUT_CMD; + lio->ctx.timeout = qla2x00_async_logio_timeout; + rval = qla2x00_start_sp(sp); + if (rval != QLA_SUCCESS) + goto done_free_sp; + + DEBUG2(printk(KERN_DEBUG + "scsi(%ld:%x): Async-logout - loop-id=%x portid=%02x%02x%02x.\n", + fcport->vha->host_no, sp->handle, fcport->loop_id, + fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa)); + return rval; + +done_free_sp: + del_timer_sync(&lio->ctx.timer); + lio->ctx.free(sp); +done: + return rval; +} + +int +qla2x00_async_login_done(struct scsi_qla_host *vha, fc_port_t *fcport, + uint16_t *data) +{ + int rval; + uint8_t opts = 0; + + switch (data[0]) { + case MBS_COMMAND_COMPLETE: + if (fcport->flags & FCF_TAPE_PRESENT) + opts |= BIT_1; + rval = qla2x00_get_port_database(vha, fcport, opts); + if (rval != QLA_SUCCESS) + qla2x00_mark_device_lost(vha, fcport, 1, 0); + else + qla2x00_update_fcport(vha, fcport); + break; + case MBS_COMMAND_ERROR: + if (data[1] & QLA_LOGIO_LOGIN_RETRIED) + set_bit(RELOGIN_NEEDED, &vha->dpc_flags); + else + qla2x00_mark_device_lost(vha, fcport, 1, 0); + break; + case MBS_PORT_ID_USED: + fcport->loop_id = data[1]; + qla2x00_post_async_login_work(vha, fcport, NULL); + break; + case MBS_LOOP_ID_USED: + fcport->loop_id++; + rval = qla2x00_find_new_loop_id(vha, fcport); + if (rval != QLA_SUCCESS) { + qla2x00_mark_device_lost(vha, fcport, 1, 0); + break; + } + qla2x00_post_async_login_work(vha, fcport, NULL); + break; + } + return QLA_SUCCESS; +} + +int +qla2x00_async_logout_done(struct scsi_qla_host *vha, fc_port_t *fcport, + uint16_t *data) +{ + qla2x00_mark_device_lost(vha, fcport, 1, 0); + return QLA_SUCCESS; +} + /****************************************************************************/ /* QLogic ISP2x00 Hardware Support Functions. */ /****************************************************************************/ @@ -987,7 +1191,6 @@ qla2x00_setup_chip(scsi_qla_host_t *vha) ha->phy_version); if (rval != QLA_SUCCESS) goto failed; - ha->flags.npiv_supported = 0; if (IS_QLA2XXX_MIDTYPE(ha) && (ha->fw_attributes & BIT_2)) { @@ -1591,7 +1794,8 @@ qla2x00_set_model_info(scsi_qla_host_t *vha, uint8_t *model, size_t len, char *st, *en; uint16_t index; struct qla_hw_data *ha = vha->hw; - int use_tbl = !IS_QLA25XX(ha) && !IS_QLA81XX(ha); + int use_tbl = !IS_QLA24XX_TYPE(ha) && !IS_QLA25XX(ha) && + !IS_QLA81XX(ha); if (memcmp(model, BINZERO, len) != 0) { strncpy(ha->model_number, model, len); @@ -1978,7 +2182,7 @@ qla2x00_rport_del(void *data) struct fc_rport *rport; spin_lock_irq(fcport->vha->host->host_lock); - rport = fcport->drport; + rport = fcport->drport ? fcport->drport: fcport->rport; fcport->drport = NULL; spin_unlock_irq(fcport->vha->host->host_lock); if (rport) @@ -2345,8 +2549,7 @@ qla2x00_reg_remote_port(scsi_qla_host_t *vha, fc_port_t *fcport) struct fc_rport *rport; struct qla_hw_data *ha = vha->hw; - if (fcport->drport) - qla2x00_rport_del(fcport); + qla2x00_rport_del(fcport); rport_ids.node_name = wwn_to_u64(fcport->node_name); rport_ids.port_name = wwn_to_u64(fcport->port_name); @@ -3039,6 +3242,12 @@ qla2x00_fabric_dev_login(scsi_qla_host_t *vha, fc_port_t *fcport, rval = QLA_SUCCESS; retry = 0; + if (IS_ALOGIO_CAPABLE(ha)) { + rval = qla2x00_post_async_login_work(vha, fcport, NULL); + if (!rval) + return rval; + } + rval = qla2x00_fabric_login(vha, fcport, next_loopid); if (rval == QLA_SUCCESS) { /* Send an ADISC to tape devices.*/ @@ -3133,7 +3342,7 @@ qla2x00_fabric_login(scsi_qla_host_t *vha, fc_port_t *fcport, } else { fcport->port_type = FCT_TARGET; if (mb[1] & BIT_1) { - fcport->flags |= FCF_TAPE_PRESENT; + fcport->flags |= FCF_FCP2_DEVICE; } } @@ -3244,7 +3453,7 @@ qla2x00_loop_resync(scsi_qla_host_t *vha) struct req_que *req; struct rsp_que *rsp; - if (ql2xmultique_tag) + if (vha->hw->flags.cpu_affinity_enabled) req = vha->hw->req_q_map[0]; else req = vha->req; @@ -3286,15 +3495,17 @@ qla2x00_loop_resync(scsi_qla_host_t *vha) } void -qla2x00_update_fcports(scsi_qla_host_t *vha) +qla2x00_update_fcports(scsi_qla_host_t *base_vha) { fc_port_t *fcport; + struct scsi_qla_host *tvp, *vha; /* Go with deferred removal of rport references. */ - list_for_each_entry(fcport, &vha->vp_fcports, list) - if (fcport && fcport->drport && - atomic_read(&fcport->state) != FCS_UNCONFIGURED) - qla2x00_rport_del(fcport); + list_for_each_entry_safe(vha, tvp, &base_vha->hw->vp_list, list) + list_for_each_entry(fcport, &vha->vp_fcports, list) + if (fcport && fcport->drport && + atomic_read(&fcport->state) != FCS_UNCONFIGURED) + qla2x00_rport_del(fcport); } /* @@ -3331,8 +3542,6 @@ qla2x00_abort_isp(scsi_qla_host_t *vha) if (atomic_read(&vha->loop_state) != LOOP_DOWN) { atomic_set(&vha->loop_state, LOOP_DOWN); qla2x00_mark_all_devices_lost(vha, 0); - list_for_each_entry_safe(vp, tvp, &ha->vp_list, list) - qla2x00_mark_all_devices_lost(vp, 0); } else { if (!atomic_read(&vha->loop_down_timer)) atomic_set(&vha->loop_down_timer, @@ -4264,7 +4473,7 @@ qla24xx_configure_vhba(scsi_qla_host_t *vha) return -EINVAL; rval = qla2x00_fw_ready(base_vha); - if (ql2xmultique_tag) + if (ha->flags.cpu_affinity_enabled) req = ha->req_q_map[0]; else req = vha->req; diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c index 13396be..c5ccac0 100644 --- a/drivers/scsi/qla2xxx/qla_iocb.c +++ b/drivers/scsi/qla2xxx/qla_iocb.c @@ -350,6 +350,7 @@ qla2x00_start_scsi(srb_t *sp) /* Build command packet */ req->current_outstanding_cmd = handle; req->outstanding_cmds[handle] = sp; + sp->handle = handle; sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle; req->cnt -= req_cnt; @@ -778,6 +779,7 @@ qla24xx_start_scsi(srb_t *sp) /* Build command packet. */ req->current_outstanding_cmd = handle; req->outstanding_cmds[handle] = sp; + sp->handle = handle; sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle; req->cnt -= req_cnt; @@ -852,9 +854,211 @@ static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp) struct qla_hw_data *ha = sp->fcport->vha->hw; int affinity = cmd->request->cpu; - if (ql2xmultique_tag && affinity >= 0 && + if (ha->flags.cpu_affinity_enabled && affinity >= 0 && affinity < ha->max_rsp_queues - 1) *rsp = ha->rsp_q_map[affinity + 1]; else *rsp = ha->rsp_q_map[0]; } + +/* Generic Control-SRB manipulation functions. */ + +static void * +qla2x00_alloc_iocbs(srb_t *sp) +{ + scsi_qla_host_t *vha = sp->fcport->vha; + struct qla_hw_data *ha = vha->hw; + struct req_que *req = ha->req_q_map[0]; + device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); + uint32_t index, handle; + request_t *pkt; + uint16_t cnt, req_cnt; + + pkt = NULL; + req_cnt = 1; + + /* Check for room in outstanding command list. */ + handle = req->current_outstanding_cmd; + for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) { + handle++; + if (handle == MAX_OUTSTANDING_COMMANDS) + handle = 1; + if (!req->outstanding_cmds[handle]) + break; + } + if (index == MAX_OUTSTANDING_COMMANDS) + goto queuing_error; + + /* Check for room on request queue. */ + if (req->cnt < req_cnt) { + if (ha->mqenable) + cnt = RD_REG_DWORD(®->isp25mq.req_q_out); + else if (IS_FWI2_CAPABLE(ha)) + cnt = RD_REG_DWORD(®->isp24.req_q_out); + else + cnt = qla2x00_debounce_register( + ISP_REQ_Q_OUT(ha, ®->isp)); + + if (req->ring_index < cnt) + req->cnt = cnt - req->ring_index; + else + req->cnt = req->length - + (req->ring_index - cnt); + } + if (req->cnt < req_cnt) + goto queuing_error; + + /* Prep packet */ + req->current_outstanding_cmd = handle; + req->outstanding_cmds[handle] = sp; + req->cnt -= req_cnt; + + pkt = req->ring_ptr; + memset(pkt, 0, REQUEST_ENTRY_SIZE); + pkt->entry_count = req_cnt; + pkt->handle = handle; + sp->handle = handle; + +queuing_error: + return pkt; +} + +static void +qla2x00_start_iocbs(srb_t *sp) +{ + struct qla_hw_data *ha = sp->fcport->vha->hw; + struct req_que *req = ha->req_q_map[0]; + device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); + struct device_reg_2xxx __iomem *ioreg = &ha->iobase->isp; + + /* Adjust ring index. */ + req->ring_index++; + if (req->ring_index == req->length) { + req->ring_index = 0; + req->ring_ptr = req->ring; + } else + req->ring_ptr++; + + /* Set chip new ring index. */ + if (ha->mqenable) { + WRT_REG_DWORD(®->isp25mq.req_q_in, req->ring_index); + RD_REG_DWORD(&ioreg->hccr); + } else if (IS_FWI2_CAPABLE(ha)) { + WRT_REG_DWORD(®->isp24.req_q_in, req->ring_index); + RD_REG_DWORD_RELAXED(®->isp24.req_q_in); + } else { + WRT_REG_WORD(ISP_REQ_Q_IN(ha, ®->isp), req->ring_index); + RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, ®->isp)); + } +} + +static void +qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio) +{ + struct srb_logio *lio = sp->ctx; + + logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; + logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI); + if (lio->flags & SRB_LOGIN_COND_PLOGI) + logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI); + if (lio->flags & SRB_LOGIN_SKIP_PRLI) + logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI); + logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); + logio->port_id[0] = sp->fcport->d_id.b.al_pa; + logio->port_id[1] = sp->fcport->d_id.b.area; + logio->port_id[2] = sp->fcport->d_id.b.domain; + logio->vp_index = sp->fcport->vp_idx; +} + +static void +qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx) +{ + struct qla_hw_data *ha = sp->fcport->vha->hw; + struct srb_logio *lio = sp->ctx; + uint16_t opts; + + mbx->entry_type = MBX_IOCB_TYPE;; + SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); + mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT); + opts = lio->flags & SRB_LOGIN_COND_PLOGI ? BIT_0: 0; + opts |= lio->flags & SRB_LOGIN_SKIP_PRLI ? BIT_1: 0; + if (HAS_EXTENDED_IDS(ha)) { + mbx->mb1 = cpu_to_le16(sp->fcport->loop_id); + mbx->mb10 = cpu_to_le16(opts); + } else { + mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts); + } + mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); + mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | + sp->fcport->d_id.b.al_pa); + mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx); +} + +static void +qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio) +{ + logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; + logio->control_flags = + cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO); + logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); + logio->port_id[0] = sp->fcport->d_id.b.al_pa; + logio->port_id[1] = sp->fcport->d_id.b.area; + logio->port_id[2] = sp->fcport->d_id.b.domain; + logio->vp_index = sp->fcport->vp_idx; +} + +static void +qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx) +{ + struct qla_hw_data *ha = sp->fcport->vha->hw; + + mbx->entry_type = MBX_IOCB_TYPE;; + SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); + mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT); + mbx->mb1 = HAS_EXTENDED_IDS(ha) ? + cpu_to_le16(sp->fcport->loop_id): + cpu_to_le16(sp->fcport->loop_id << 8); + mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); + mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | + sp->fcport->d_id.b.al_pa); + mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx); + /* Implicit: mbx->mbx10 = 0. */ +} + +int +qla2x00_start_sp(srb_t *sp) +{ + int rval; + struct qla_hw_data *ha = sp->fcport->vha->hw; + void *pkt; + struct srb_ctx *ctx = sp->ctx; + unsigned long flags; + + rval = QLA_FUNCTION_FAILED; + spin_lock_irqsave(&ha->hardware_lock, flags); + pkt = qla2x00_alloc_iocbs(sp); + if (!pkt) + goto done; + + rval = QLA_SUCCESS; + switch (ctx->type) { + case SRB_LOGIN_CMD: + IS_FWI2_CAPABLE(ha) ? + qla24xx_login_iocb(sp, pkt): + qla2x00_login_iocb(sp, pkt); + break; + case SRB_LOGOUT_CMD: + IS_FWI2_CAPABLE(ha) ? + qla24xx_logout_iocb(sp, pkt): + qla2x00_logout_iocb(sp, pkt); + break; + default: + break; + } + + wmb(); + qla2x00_start_iocbs(sp); +done: + spin_unlock_irqrestore(&ha->hardware_lock, flags); + return rval; +} diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index 245e7af..b20a716 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -598,9 +598,54 @@ skip_rio: break; case MBA_PORT_UPDATE: /* Port database update */ - /* Only handle SCNs for our Vport index. */ - if (vha->vp_idx && vha->vp_idx != (mb[3] & 0xff)) + /* + * Handle only global and vn-port update events + * + * Relevant inputs: + * mb[1] = N_Port handle of changed port + * OR 0xffff for global event + * mb[2] = New login state + * 7 = Port logged out + * mb[3] = LSB is vp_idx, 0xff = all vps + * + * Skip processing if: + * Event is global, vp_idx is NOT all vps, + * vp_idx does not match + * Event is not global, vp_idx does not match + */ + if ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) + || (mb[1] != 0xffff)) { + if (vha->vp_idx != (mb[3] & 0xff)) + break; + } + + /* Global event -- port logout or port unavailable. */ + if (mb[1] == 0xffff && mb[2] == 0x7) { + DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n", + vha->host_no)); + DEBUG(printk(KERN_INFO + "scsi(%ld): Port unavailable %04x %04x %04x.\n", + vha->host_no, mb[1], mb[2], mb[3])); + + if (atomic_read(&vha->loop_state) != LOOP_DOWN) { + atomic_set(&vha->loop_state, LOOP_DOWN); + atomic_set(&vha->loop_down_timer, + LOOP_DOWN_TIME); + vha->device_flags |= DFLG_NO_CABLE; + qla2x00_mark_all_devices_lost(vha, 1); + } + + if (vha->vp_idx) { + atomic_set(&vha->vp_state, VP_FAILED); + fc_vport_set_state(vha->fc_vport, + FC_VPORT_FAILED); + qla2x00_mark_all_devices_lost(vha, 1); + } + + vha->flags.management_server_logged_in = 0; + ha->link_data_rate = PORT_SPEED_UNKNOWN; break; + } /* * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET @@ -640,8 +685,9 @@ skip_rio: if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags)) break; /* Only handle SCNs for our Vport index. */ - if (vha->vp_idx && vha->vp_idx != (mb[3] & 0xff)) + if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff)) break; + DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n", vha->host_no)); DEBUG(printk(KERN_INFO @@ -874,6 +920,249 @@ qla2x00_process_completed_request(struct scsi_qla_host *vha, } } +static srb_t * +qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func, + struct req_que *req, void *iocb) +{ + struct qla_hw_data *ha = vha->hw; + sts_entry_t *pkt = iocb; + srb_t *sp = NULL; + uint16_t index; + + index = LSW(pkt->handle); + if (index >= MAX_OUTSTANDING_COMMANDS) { + qla_printk(KERN_WARNING, ha, + "%s: Invalid completion handle (%x).\n", func, index); + set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); + goto done; + } + sp = req->outstanding_cmds[index]; + if (!sp) { + qla_printk(KERN_WARNING, ha, + "%s: Invalid completion handle (%x) -- timed-out.\n", func, + index); + return sp; + } + if (sp->handle != index) { + qla_printk(KERN_WARNING, ha, + "%s: SRB handle (%x) mismatch %x.\n", func, sp->handle, + index); + return NULL; + } + req->outstanding_cmds[index] = NULL; +done: + return sp; +} + +static void +qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req, + struct mbx_entry *mbx) +{ + const char func[] = "MBX-IOCB"; + const char *type; + struct qla_hw_data *ha = vha->hw; + fc_port_t *fcport; + srb_t *sp; + struct srb_logio *lio; + uint16_t data[2]; + + sp = qla2x00_get_sp_from_handle(vha, func, req, mbx); + if (!sp) + return; + + type = NULL; + lio = sp->ctx; + switch (lio->ctx.type) { + case SRB_LOGIN_CMD: + type = "login"; + break; + case SRB_LOGOUT_CMD: + type = "logout"; + break; + default: + qla_printk(KERN_WARNING, ha, + "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp, + lio->ctx.type); + return; + } + + del_timer(&lio->ctx.timer); + fcport = sp->fcport; + + data[0] = data[1] = 0; + if (mbx->entry_status) { + DEBUG2(printk(KERN_WARNING + "scsi(%ld:%x): Async-%s error entry - entry-status=%x " + "status=%x state-flag=%x status-flags=%x.\n", + fcport->vha->host_no, sp->handle, type, + mbx->entry_status, le16_to_cpu(mbx->status), + le16_to_cpu(mbx->state_flags), + le16_to_cpu(mbx->status_flags))); + DEBUG2(qla2x00_dump_buffer((uint8_t *)mbx, sizeof(*mbx))); + + data[0] = MBS_COMMAND_ERROR; + data[1] = lio->flags & SRB_LOGIN_RETRIED ? + QLA_LOGIO_LOGIN_RETRIED: 0; + goto done_post_logio_done_work; + } + + if (!mbx->status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) { + DEBUG2(printk(KERN_DEBUG + "scsi(%ld:%x): Async-%s complete - mbx1=%x.\n", + fcport->vha->host_no, sp->handle, type, + le16_to_cpu(mbx->mb1))); + + data[0] = MBS_COMMAND_COMPLETE; + if (lio->ctx.type == SRB_LOGIN_CMD && le16_to_cpu(mbx->mb1) & BIT_1) + fcport->flags |= FCF_FCP2_DEVICE; + + goto done_post_logio_done_work; + } + + data[0] = le16_to_cpu(mbx->mb0); + switch (data[0]) { + case MBS_PORT_ID_USED: + data[1] = le16_to_cpu(mbx->mb1); + break; + case MBS_LOOP_ID_USED: + break; + default: + data[0] = MBS_COMMAND_ERROR; + data[1] = lio->flags & SRB_LOGIN_RETRIED ? + QLA_LOGIO_LOGIN_RETRIED: 0; + break; + } + + DEBUG2(printk(KERN_WARNING + "scsi(%ld:%x): Async-%s failed - status=%x mb0=%x mb1=%x mb2=%x " + "mb6=%x mb7=%x.\n", + fcport->vha->host_no, sp->handle, type, le16_to_cpu(mbx->status), + le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1), + le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6), + le16_to_cpu(mbx->mb7))); + +done_post_logio_done_work: + lio->ctx.type == SRB_LOGIN_CMD ? + qla2x00_post_async_login_done_work(fcport->vha, fcport, data): + qla2x00_post_async_logout_done_work(fcport->vha, fcport, data); + + lio->ctx.free(sp); +} + +static void +qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req, + struct logio_entry_24xx *logio) +{ + const char func[] = "LOGIO-IOCB"; + const char *type; + struct qla_hw_data *ha = vha->hw; + fc_port_t *fcport; + srb_t *sp; + struct srb_logio *lio; + uint16_t data[2]; + uint32_t iop[2]; + + sp = qla2x00_get_sp_from_handle(vha, func, req, logio); + if (!sp) + return; + + type = NULL; + lio = sp->ctx; + switch (lio->ctx.type) { + case SRB_LOGIN_CMD: + type = "login"; + break; + case SRB_LOGOUT_CMD: + type = "logout"; + break; + default: + qla_printk(KERN_WARNING, ha, + "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp, + lio->ctx.type); + return; + } + + del_timer(&lio->ctx.timer); + fcport = sp->fcport; + + data[0] = data[1] = 0; + if (logio->entry_status) { + DEBUG2(printk(KERN_WARNING + "scsi(%ld:%x): Async-%s error entry - entry-status=%x.\n", + fcport->vha->host_no, sp->handle, type, + logio->entry_status)); + DEBUG2(qla2x00_dump_buffer((uint8_t *)logio, sizeof(*logio))); + + data[0] = MBS_COMMAND_ERROR; + data[1] = lio->flags & SRB_LOGIN_RETRIED ? + QLA_LOGIO_LOGIN_RETRIED: 0; + goto done_post_logio_done_work; + } + + if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) { + DEBUG2(printk(KERN_DEBUG + "scsi(%ld:%x): Async-%s complete - iop0=%x.\n", + fcport->vha->host_no, sp->handle, type, + le32_to_cpu(logio->io_parameter[0]))); + + data[0] = MBS_COMMAND_COMPLETE; + if (lio->ctx.type == SRB_LOGOUT_CMD) + goto done_post_logio_done_work; + + iop[0] = le32_to_cpu(logio->io_parameter[0]); + if (iop[0] & BIT_4) { + fcport->port_type = FCT_TARGET; + if (iop[0] & BIT_8) + fcport->flags |= FCF_FCP2_DEVICE; + } + if (iop[0] & BIT_5) + fcport->port_type = FCT_INITIATOR; + if (logio->io_parameter[7] || logio->io_parameter[8]) + fcport->supported_classes |= FC_COS_CLASS2; + if (logio->io_parameter[9] || logio->io_parameter[10]) + fcport->supported_classes |= FC_COS_CLASS3; + + goto done_post_logio_done_work; + } + + iop[0] = le32_to_cpu(logio->io_parameter[0]); + iop[1] = le32_to_cpu(logio->io_parameter[1]); + switch (iop[0]) { + case LSC_SCODE_PORTID_USED: + data[0] = MBS_PORT_ID_USED; + data[1] = LSW(iop[1]); + break; + case LSC_SCODE_NPORT_USED: + data[0] = MBS_LOOP_ID_USED; + break; + case LSC_SCODE_CMD_FAILED: + if ((iop[1] & 0xff) == 0x05) { + data[0] = MBS_NOT_LOGGED_IN; + break; + } + /* Fall through. */ + default: + data[0] = MBS_COMMAND_ERROR; + data[1] = lio->flags & SRB_LOGIN_RETRIED ? + QLA_LOGIO_LOGIN_RETRIED: 0; + break; + } + + DEBUG2(printk(KERN_WARNING + "scsi(%ld:%x): Async-%s failed - comp=%x iop0=%x iop1=%x.\n", + fcport->vha->host_no, sp->handle, type, + le16_to_cpu(logio->comp_status), + le32_to_cpu(logio->io_parameter[0]), + le32_to_cpu(logio->io_parameter[1]))); + +done_post_logio_done_work: + lio->ctx.type == SRB_LOGIN_CMD ? + qla2x00_post_async_login_done_work(fcport->vha, fcport, data): + qla2x00_post_async_logout_done_work(fcport->vha, fcport, data); + + lio->ctx.free(sp); +} + /** * qla2x00_process_response_queue() - Process response queue entries. * @ha: SCSI driver HA context @@ -935,6 +1224,9 @@ qla2x00_process_response_queue(struct rsp_que *rsp) case STATUS_CONT_TYPE: qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt); break; + case MBX_IOCB_TYPE: + qla2x00_mbx_iocb_entry(vha, rsp->req, + (struct mbx_entry *)pkt); default: /* Type Not Supported. */ DEBUG4(printk(KERN_WARNING @@ -1223,6 +1515,7 @@ qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt) cp->device->id, cp->device->lun, resid, scsi_bufflen(cp))); + scsi_set_resid(cp, resid); cp->result = DID_ERROR << 16; break; } @@ -1544,6 +1837,10 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha, qla24xx_report_id_acquisition(vha, (struct vp_rpt_id_entry_24xx *)pkt); break; + case LOGINOUT_PORT_IOCB_TYPE: + qla24xx_logio_entry(vha, rsp->req, + (struct logio_entry_24xx *)pkt); + break; default: /* Type Not Supported. */ DEBUG4(printk(KERN_WARNING @@ -1723,8 +2020,10 @@ qla24xx_msix_rsp_q(int irq, void *dev_id) vha = qla25xx_get_host(rsp); qla24xx_process_response_queue(vha, rsp); - WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT); - + if (!ha->mqenable) { + WRT_REG_DWORD(®->hccr, HCCRX_CLR_RISC_INT); + RD_REG_DWORD_RELAXED(®->hccr); + } spin_unlock_irq(&ha->hardware_lock); return IRQ_HANDLED; diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index fe69f30..b6202fe 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -1507,7 +1507,7 @@ qla24xx_login_fabric(scsi_qla_host_t *vha, uint16_t loop_id, uint8_t domain, DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no)); - if (ql2xmultique_tag) + if (ha->flags.cpu_affinity_enabled) req = ha->req_q_map[0]; else req = vha->req; @@ -2324,7 +2324,7 @@ __qla24xx_issue_tmf(char *name, uint32_t type, struct fc_port *fcport, vha = fcport->vha; ha = vha->hw; req = vha->req; - if (ql2xmultique_tag) + if (ha->flags.cpu_affinity_enabled) rsp = ha->rsp_q_map[tag + 1]; else rsp = req->rsp; @@ -2746,7 +2746,8 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha, if (rptid_entry->format == 0) { DEBUG15(printk("%s:format 0 : scsi(%ld) number of VPs setup %d," " number of VPs acquired %d\n", __func__, vha->host_no, - MSB(rptid_entry->vp_count), LSB(rptid_entry->vp_count))); + MSB(le16_to_cpu(rptid_entry->vp_count)), + LSB(le16_to_cpu(rptid_entry->vp_count)))); DEBUG15(printk("%s primary port id %02x%02x%02x\n", __func__, rptid_entry->port_id[2], rptid_entry->port_id[1], rptid_entry->port_id[0])); diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c index cd78c50..42b799a 100644 --- a/drivers/scsi/qla2xxx/qla_mid.c +++ b/drivers/scsi/qla2xxx/qla_mid.c @@ -42,7 +42,6 @@ qla24xx_allocate_vp_id(scsi_qla_host_t *vha) set_bit(vp_id, ha->vp_idx_map); ha->num_vhosts++; - ha->cur_vport_count++; vha->vp_idx = vp_id; list_add_tail(&vha->list, &ha->vp_list); mutex_unlock(&ha->vport_lock); @@ -58,7 +57,6 @@ qla24xx_deallocate_vp_id(scsi_qla_host_t *vha) mutex_lock(&ha->vport_lock); vp_id = vha->vp_idx; ha->num_vhosts--; - ha->cur_vport_count--; clear_bit(vp_id, ha->vp_idx_map); list_del(&vha->list); mutex_unlock(&ha->vport_lock); @@ -235,7 +233,11 @@ qla2x00_vp_abort_isp(scsi_qla_host_t *vha) atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME); } - /* To exclusively reset vport, we need to log it out first.*/ + /* + * To exclusively reset vport, we need to log it out first. Note: this + * control_vp can fail if ISP reset is already issued, this is + * expected, as the vp would be already logged out due to ISP reset. + */ if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL); @@ -247,18 +249,11 @@ qla2x00_vp_abort_isp(scsi_qla_host_t *vha) static int qla2x00_do_dpc_vp(scsi_qla_host_t *vha) { - struct qla_hw_data *ha = vha->hw; - scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); + qla2x00_do_work(vha); if (test_and_clear_bit(VP_IDX_ACQUIRED, &vha->vp_flags)) { /* VP acquired. complete port configuration */ - if (atomic_read(&base_vha->loop_state) == LOOP_READY) { - qla24xx_configure_vp(vha); - } else { - set_bit(VP_IDX_ACQUIRED, &vha->vp_flags); - set_bit(VP_DPC_NEEDED, &base_vha->dpc_flags); - } - + qla24xx_configure_vp(vha); return 0; } @@ -309,6 +304,9 @@ qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha) clear_bit(VP_DPC_NEEDED, &vha->dpc_flags); + if (!(ha->current_topology & ISP_CFG_F)) + return; + list_for_each_entry_safe(vp, tvp, &ha->vp_list, list) { if (vp->vp_idx) ret = qla2x00_do_dpc_vp(vp); @@ -413,6 +411,11 @@ qla24xx_create_vhost(struct fc_vport *fc_vport) vha->flags.init_done = 1; + mutex_lock(&ha->vport_lock); + set_bit(vha->vp_idx, ha->vp_idx_map); + ha->cur_vport_count++; + mutex_unlock(&ha->vport_lock); + return vha; create_vhost_failed: diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index f0396e7..b79fca7 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -287,9 +287,12 @@ static int qla25xx_setup_mode(struct scsi_qla_host *vha) int ques, req, ret; struct qla_hw_data *ha = vha->hw; + if (!(ha->fw_attributes & BIT_6)) { + qla_printk(KERN_INFO, ha, + "Firmware is not multi-queue capable\n"); + goto fail; + } if (ql2xmultique_tag) { - /* CPU affinity mode */ - ha->wq = create_workqueue("qla2xxx_wq"); /* create a request queue for IO */ options |= BIT_7; req = qla25xx_create_req_que(ha, options, 0, 0, -1, @@ -299,6 +302,7 @@ static int qla25xx_setup_mode(struct scsi_qla_host *vha) "Can't create request queue\n"); goto fail; } + ha->wq = create_workqueue("qla2xxx_wq"); vha->req = ha->req_q_map[req]; options |= BIT_1; for (ques = 1; ques < ha->max_rsp_queues; ques++) { @@ -309,6 +313,8 @@ static int qla25xx_setup_mode(struct scsi_qla_host *vha) goto fail2; } } + ha->flags.cpu_affinity_enabled = 1; + DEBUG2(qla_printk(KERN_INFO, ha, "CPU affinity mode enabled, no. of response" " queues:%d, no. of request queues:%d\n", @@ -317,8 +323,13 @@ static int qla25xx_setup_mode(struct scsi_qla_host *vha) return 0; fail2: qla25xx_delete_queues(vha); + destroy_workqueue(ha->wq); + ha->wq = NULL; fail: ha->mqenable = 0; + kfree(ha->req_q_map); + kfree(ha->rsp_q_map); + ha->max_req_queues = ha->max_rsp_queues = 1; return 1; } @@ -462,6 +473,7 @@ qla2x00_get_new_sp(scsi_qla_host_t *vha, fc_port_t *fcport, sp->flags = 0; CMD_SP(cmd) = (void *)sp; cmd->scsi_done = done; + sp->ctx = NULL; return sp; } @@ -556,11 +568,8 @@ qla2x00_eh_wait_on_command(struct scsi_cmnd *cmd) unsigned long wait_iter = ABORT_WAIT_ITER; int ret = QLA_SUCCESS; - while (CMD_SP(cmd)) { + while (CMD_SP(cmd) && wait_iter--) { msleep(ABORT_POLLING_PERIOD); - - if (--wait_iter) - break; } if (CMD_SP(cmd)) ret = QLA_FUNCTION_FAILED; @@ -698,6 +707,8 @@ qla2x00_abort_fcport_cmds(fc_port_t *fcport) continue; if (sp->fcport != fcport) continue; + if (sp->ctx) + continue; spin_unlock_irqrestore(&ha->hardware_lock, flags); if (ha->isp_ops->abort_command(sp)) { @@ -783,7 +794,8 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd) if (sp == NULL) continue; - + if (sp->ctx) + continue; if (sp->cmd != cmd) continue; @@ -848,7 +860,8 @@ qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *vha, unsigned int t, sp = req->outstanding_cmds[cnt]; if (!sp) continue; - + if (sp->ctx) + continue; if (vha->vp_idx != sp->fcport->vha->vp_idx) continue; match = 0; @@ -1106,8 +1119,7 @@ qla2x00_loop_reset(scsi_qla_host_t *vha) struct fc_port *fcport; struct qla_hw_data *ha = vha->hw; - if (ha->flags.enable_lip_full_login && !vha->vp_idx && - !IS_QLA81XX(ha)) { + if (ha->flags.enable_lip_full_login && !IS_QLA81XX(ha)) { ret = qla2x00_full_login_lip(vha); if (ret != QLA_SUCCESS) { DEBUG2_3(printk("%s(%ld): failed: " @@ -1120,7 +1132,7 @@ qla2x00_loop_reset(scsi_qla_host_t *vha) qla2x00_wait_for_loop_ready(vha); } - if (ha->flags.enable_lip_reset && !vha->vp_idx) { + if (ha->flags.enable_lip_reset) { ret = qla2x00_lip_reset(vha); if (ret != QLA_SUCCESS) { DEBUG2_3(printk("%s(%ld): failed: " @@ -1154,6 +1166,7 @@ qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res) int que, cnt; unsigned long flags; srb_t *sp; + struct srb_ctx *ctx; struct qla_hw_data *ha = vha->hw; struct req_que *req; @@ -1166,8 +1179,14 @@ qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res) sp = req->outstanding_cmds[cnt]; if (sp) { req->outstanding_cmds[cnt] = NULL; - sp->cmd->result = res; - qla2x00_sp_compl(ha, sp); + if (!sp->ctx) { + sp->cmd->result = res; + qla2x00_sp_compl(ha, sp); + } else { + ctx = sp->ctx; + del_timer_sync(&ctx->timer); + ctx->free(sp); + } } } } @@ -1193,6 +1212,7 @@ qla2xxx_slave_configure(struct scsi_device *sdev) scsi_qla_host_t *vha = shost_priv(sdev->host); struct qla_hw_data *ha = vha->hw; struct fc_rport *rport = starget_to_rport(sdev->sdev_target); + fc_port_t *fcport = *(fc_port_t **)rport->dd_data; struct req_que *req = vha->req; if (sdev->tagged_supported) @@ -1201,6 +1221,8 @@ qla2xxx_slave_configure(struct scsi_device *sdev) scsi_deactivate_tcq(sdev, req->max_q_depth); rport->dev_loss_tmo = ha->port_down_retry_count; + if (sdev->type == TYPE_TAPE) + fcport->flags |= FCF_TAPE_PRESENT; return 0; } @@ -1923,6 +1945,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) if (ret) goto probe_init_failed; /* Alloc arrays of request and response ring ptrs */ +que_init: if (!qla2x00_alloc_queues(ha)) { qla_printk(KERN_WARNING, ha, "[ERROR] Failed to allocate memory for queue" @@ -1959,11 +1982,14 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) goto probe_failed; } - if (ha->mqenable) - if (qla25xx_setup_mode(base_vha)) + if (ha->mqenable) { + if (qla25xx_setup_mode(base_vha)) { qla_printk(KERN_WARNING, ha, "Can't create queues, falling back to single" " queue mode\n"); + goto que_init; + } + } if (ha->flags.running_gold_fw) goto skip_dpc; @@ -2155,17 +2181,19 @@ qla2x00_schedule_rport_del(struct scsi_qla_host *vha, fc_port_t *fcport, int defer) { struct fc_rport *rport; + scsi_qla_host_t *base_vha; if (!fcport->rport) return; rport = fcport->rport; if (defer) { + base_vha = pci_get_drvdata(vha->hw->pdev); spin_lock_irq(vha->host->host_lock); fcport->drport = rport; spin_unlock_irq(vha->host->host_lock); - set_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags); - qla2xxx_wake_dpc(vha); + set_bit(FCPORT_UPDATE_NEEDED, &base_vha->dpc_flags); + qla2xxx_wake_dpc(base_vha); } else fc_remote_port_delete(rport); } @@ -2237,8 +2265,9 @@ qla2x00_mark_all_devices_lost(scsi_qla_host_t *vha, int defer) fc_port_t *fcport; list_for_each_entry(fcport, &vha->vp_fcports, list) { - if (vha->vp_idx != fcport->vp_idx) + if (vha->vp_idx != 0 && vha->vp_idx != fcport->vp_idx) continue; + /* * No point in marking the device as lost, if the device is * already DEAD. @@ -2246,10 +2275,12 @@ qla2x00_mark_all_devices_lost(scsi_qla_host_t *vha, int defer) if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD) continue; if (atomic_read(&fcport->state) == FCS_ONLINE) { - atomic_set(&fcport->state, FCS_DEVICE_LOST); - qla2x00_schedule_rport_del(vha, fcport, defer); - } else - atomic_set(&fcport->state, FCS_DEVICE_LOST); + if (defer) + qla2x00_schedule_rport_del(vha, fcport, defer); + else if (vha->vp_idx == fcport->vp_idx) + qla2x00_schedule_rport_del(vha, fcport, defer); + } + atomic_set(&fcport->state, FCS_DEVICE_LOST); } } @@ -2598,7 +2629,31 @@ qla2x00_post_idc_ack_work(struct scsi_qla_host *vha, uint16_t *mb) return qla2x00_post_work(vha, e); } -static void +#define qla2x00_post_async_work(name, type) \ +int qla2x00_post_async_##name##_work( \ + struct scsi_qla_host *vha, \ + fc_port_t *fcport, uint16_t *data) \ +{ \ + struct qla_work_evt *e; \ + \ + e = qla2x00_alloc_work(vha, type); \ + if (!e) \ + return QLA_FUNCTION_FAILED; \ + \ + e->u.logio.fcport = fcport; \ + if (data) { \ + e->u.logio.data[0] = data[0]; \ + e->u.logio.data[1] = data[1]; \ + } \ + return qla2x00_post_work(vha, e); \ +} + +qla2x00_post_async_work(login, QLA_EVT_ASYNC_LOGIN); +qla2x00_post_async_work(login_done, QLA_EVT_ASYNC_LOGIN_DONE); +qla2x00_post_async_work(logout, QLA_EVT_ASYNC_LOGOUT); +qla2x00_post_async_work(logout_done, QLA_EVT_ASYNC_LOGOUT_DONE); + +void qla2x00_do_work(struct scsi_qla_host *vha) { struct qla_work_evt *e, *tmp; @@ -2620,6 +2675,21 @@ qla2x00_do_work(struct scsi_qla_host *vha) case QLA_EVT_IDC_ACK: qla81xx_idc_ack(vha, e->u.idc_ack.mb); break; + case QLA_EVT_ASYNC_LOGIN: + qla2x00_async_login(vha, e->u.logio.fcport, + e->u.logio.data); + break; + case QLA_EVT_ASYNC_LOGIN_DONE: + qla2x00_async_login_done(vha, e->u.logio.fcport, + e->u.logio.data); + break; + case QLA_EVT_ASYNC_LOGOUT: + qla2x00_async_logout(vha, e->u.logio.fcport); + break; + case QLA_EVT_ASYNC_LOGOUT_DONE: + qla2x00_async_logout_done(vha, e->u.logio.fcport, + e->u.logio.data); + break; } if (e->flags & QLA_EVT_FLAG_FREE) kfree(e); @@ -2635,6 +2705,7 @@ void qla2x00_relogin(struct scsi_qla_host *vha) int status; uint16_t next_loopid = 0; struct qla_hw_data *ha = vha->hw; + uint16_t data[2]; list_for_each_entry(fcport, &vha->vp_fcports, list) { /* @@ -2644,6 +2715,7 @@ void qla2x00_relogin(struct scsi_qla_host *vha) if (atomic_read(&fcport->state) != FCS_ONLINE && fcport->login_retry) { + fcport->login_retry--; if (fcport->flags & FCF_FABRIC_DEVICE) { if (fcport->flags & FCF_TAPE_PRESENT) ha->isp_ops->fabric_logout(vha, @@ -2652,13 +2724,22 @@ void qla2x00_relogin(struct scsi_qla_host *vha) fcport->d_id.b.area, fcport->d_id.b.al_pa); - status = qla2x00_fabric_login(vha, fcport, - &next_loopid); + if (IS_ALOGIO_CAPABLE(ha)) { + data[0] = 0; + data[1] = QLA_LOGIO_LOGIN_RETRIED; + status = qla2x00_post_async_login_work( + vha, fcport, data); + if (status == QLA_SUCCESS) + continue; + /* Attempt a retry. */ + status = 1; + } else + status = qla2x00_fabric_login(vha, + fcport, &next_loopid); } else status = qla2x00_local_device_login(vha, fcport); - fcport->login_retry--; if (status == QLA_SUCCESS) { fcport->old_loop_id = fcport->loop_id; @@ -2831,6 +2912,9 @@ qla2x00_do_dpc(void *data) */ ha->dpc_active = 0; + /* Cleanup any residual CTX SRBs. */ + qla2x00_abort_all_cmds(base_vha, DID_NO_CONNECT << 16); + return 0; } @@ -2971,6 +3055,8 @@ qla2x00_timer(scsi_qla_host_t *vha) sp = req->outstanding_cmds[index]; if (!sp) continue; + if (sp->ctx) + continue; sfcp = sp->fcport; if (!(sfcp->flags & FCF_TAPE_PRESENT)) continue; @@ -2987,8 +3073,7 @@ qla2x00_timer(scsi_qla_host_t *vha) /* if the loop has been down for 4 minutes, reinit adapter */ if (atomic_dec_and_test(&vha->loop_down_timer) != 0) { - if (!(vha->device_flags & DFLG_NO_CABLE) && - !vha->vp_idx) { + if (!(vha->device_flags & DFLG_NO_CABLE)) { DEBUG(printk("scsi(%ld): Loop down - " "aborting ISP.\n", vha->host_no)); diff --git a/drivers/scsi/qla2xxx/qla_version.h b/drivers/scsi/qla2xxx/qla_version.h index 8436970..ac107a2 100644 --- a/drivers/scsi/qla2xxx/qla_version.h +++ b/drivers/scsi/qla2xxx/qla_version.h @@ -7,7 +7,7 @@ /* * Driver version */ -#define QLA2XXX_VERSION "8.03.01-k4" +#define QLA2XXX_VERSION "8.03.01-k6" #define QLA_DRIVER_MAJOR_VER 8 #define QLA_DRIVER_MINOR_VER 3 diff --git a/drivers/scsi/qla4xxx/ql4_isr.c b/drivers/scsi/qla4xxx/ql4_isr.c index 8025ee1..c196d55 100644 --- a/drivers/scsi/qla4xxx/ql4_isr.c +++ b/drivers/scsi/qla4xxx/ql4_isr.c @@ -227,11 +227,11 @@ static void qla4xxx_status_entry(struct scsi_qla_host *ha, case SCS_DATA_UNDERRUN: case SCS_DATA_OVERRUN: if ((sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) || - (sts_entry->completionStatus == SCS_DATA_OVERRUN)) { - DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " "Data overrun, " - "residual = 0x%x\n", ha->host_no, + (sts_entry->completionStatus == SCS_DATA_OVERRUN)) { + DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " "Data overrun\n", + ha->host_no, cmd->device->channel, cmd->device->id, - cmd->device->lun, __func__, residual)); + cmd->device->lun, __func__)); cmd->result = DID_ERROR << 16; break; diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 2de5f3a..b6e0307 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -994,7 +994,7 @@ static int scsi_vpd_inquiry(struct scsi_device *sdev, unsigned char *buffer, * all the existing users tried this hard. */ result = scsi_execute_req(sdev, cmd, DMA_FROM_DEVICE, buffer, - len + 4, NULL, 30 * HZ, 3, NULL); + len, NULL, 30 * HZ, 3, NULL); if (result) return result; @@ -1021,13 +1021,14 @@ unsigned char *scsi_get_vpd_page(struct scsi_device *sdev, u8 page) { int i, result; unsigned int len; - unsigned char *buf = kmalloc(259, GFP_KERNEL); + const unsigned int init_vpd_len = 255; + unsigned char *buf = kmalloc(init_vpd_len, GFP_KERNEL); if (!buf) return NULL; /* Ask for all the pages supported by this device */ - result = scsi_vpd_inquiry(sdev, buf, 0, 255); + result = scsi_vpd_inquiry(sdev, buf, 0, init_vpd_len); if (result) goto fail; @@ -1050,12 +1051,12 @@ unsigned char *scsi_get_vpd_page(struct scsi_device *sdev, u8 page) * Some pages are longer than 255 bytes. The actual length of * the page is returned in the header. */ - len = (buf[2] << 8) | buf[3]; - if (len <= 255) + len = ((buf[2] << 8) | buf[3]) + 4; + if (len <= init_vpd_len) return buf; kfree(buf); - buf = kmalloc(len + 4, GFP_KERNEL); + buf = kmalloc(len, GFP_KERNEL); result = scsi_vpd_inquiry(sdev, buf, page, len); if (result) goto fail; diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index a168935..877204d 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -382,9 +382,13 @@ static int scsi_eh_completed_normally(struct scsi_cmnd *scmd) * who knows? FIXME(eric) */ return SUCCESS; + case RESERVATION_CONFLICT: + /* + * let issuer deal with this, it could be just fine + */ + return SUCCESS; case BUSY: case QUEUE_FULL: - case RESERVATION_CONFLICT: default: return FAILED; } diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index f3c4089..662024d 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -896,6 +896,7 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes) scsi_print_result(cmd); if (driver_byte(result) & DRIVER_SENSE) scsi_print_sense("", cmd); + scsi_print_command(cmd); } blk_end_request_all(req, -EIO); scsi_next_command(cmd); diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c index 292c02f..b98885de 100644 --- a/drivers/scsi/scsi_transport_fc.c +++ b/drivers/scsi/scsi_transport_fc.c @@ -291,7 +291,7 @@ static void fc_scsi_scan_rport(struct work_struct *work); #define FC_STARGET_NUM_ATTRS 3 #define FC_RPORT_NUM_ATTRS 10 #define FC_VPORT_NUM_ATTRS 9 -#define FC_HOST_NUM_ATTRS 21 +#define FC_HOST_NUM_ATTRS 22 struct fc_internal { struct scsi_transport_template t; @@ -3432,7 +3432,7 @@ fc_bsg_jobdone(struct fc_bsg_job *job) /** * fc_bsg_softirq_done - softirq done routine for destroying the bsg requests - * @req: BSG request that holds the job to be destroyed + * @rq: BSG request that holds the job to be destroyed */ static void fc_bsg_softirq_done(struct request *rq) { diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c index b47240c..ad897df 100644 --- a/drivers/scsi/scsi_transport_iscsi.c +++ b/drivers/scsi/scsi_transport_iscsi.c @@ -36,6 +36,38 @@ #define ISCSI_TRANSPORT_VERSION "2.0-870" +static int dbg_session; +module_param_named(debug_session, dbg_session, int, + S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug_session, + "Turn on debugging for sessions in scsi_transport_iscsi " + "module. Set to 1 to turn on, and zero to turn off. Default " + "is off."); + +static int dbg_conn; +module_param_named(debug_conn, dbg_conn, int, + S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug_conn, + "Turn on debugging for connections in scsi_transport_iscsi " + "module. Set to 1 to turn on, and zero to turn off. Default " + "is off."); + +#define ISCSI_DBG_TRANS_SESSION(_session, dbg_fmt, arg...) \ + do { \ + if (dbg_session) \ + iscsi_cls_session_printk(KERN_INFO, _session, \ + "%s: " dbg_fmt, \ + __func__, ##arg); \ + } while (0); + +#define ISCSI_DBG_TRANS_CONN(_conn, dbg_fmt, arg...) \ + do { \ + if (dbg_conn) \ + iscsi_cls_conn_printk(KERN_INFO, _conn, \ + "%s: " dbg_fmt, \ + __func__, ##arg); \ + } while (0); + struct iscsi_internal { struct scsi_transport_template t; struct iscsi_transport *iscsi_transport; @@ -377,6 +409,7 @@ static void iscsi_session_release(struct device *dev) shost = iscsi_session_to_shost(session); scsi_host_put(shost); + ISCSI_DBG_TRANS_SESSION(session, "Completing session release\n"); kfree(session); } @@ -441,6 +474,9 @@ static int iscsi_user_scan_session(struct device *dev, void *data) return 0; session = iscsi_dev_to_session(dev); + + ISCSI_DBG_TRANS_SESSION(session, "Scanning session\n"); + shost = iscsi_session_to_shost(session); ihost = shost->shost_data; @@ -448,8 +484,7 @@ static int iscsi_user_scan_session(struct device *dev, void *data) spin_lock_irqsave(&session->lock, flags); if (session->state != ISCSI_SESSION_LOGGED_IN) { spin_unlock_irqrestore(&session->lock, flags); - mutex_unlock(&ihost->mutex); - return 0; + goto user_scan_exit; } id = session->target_id; spin_unlock_irqrestore(&session->lock, flags); @@ -462,7 +497,10 @@ static int iscsi_user_scan_session(struct device *dev, void *data) scsi_scan_target(&session->dev, 0, id, scan_data->lun, 1); } + +user_scan_exit: mutex_unlock(&ihost->mutex); + ISCSI_DBG_TRANS_SESSION(session, "Completed session scan\n"); return 0; } @@ -522,7 +560,9 @@ static void session_recovery_timedout(struct work_struct *work) if (session->transport->session_recovery_timedout) session->transport->session_recovery_timedout(session); + ISCSI_DBG_TRANS_SESSION(session, "Unblocking SCSI target\n"); scsi_target_unblock(&session->dev); + ISCSI_DBG_TRANS_SESSION(session, "Completed unblocking SCSI target\n"); } static void __iscsi_unblock_session(struct work_struct *work) @@ -534,6 +574,7 @@ static void __iscsi_unblock_session(struct work_struct *work) struct iscsi_cls_host *ihost = shost->shost_data; unsigned long flags; + ISCSI_DBG_TRANS_SESSION(session, "Unblocking session\n"); /* * The recovery and unblock work get run from the same workqueue, * so try to cancel it if it was going to run after this unblock. @@ -553,6 +594,7 @@ static void __iscsi_unblock_session(struct work_struct *work) if (scsi_queue_work(shost, &session->scan_work)) atomic_inc(&ihost->nr_scans); } + ISCSI_DBG_TRANS_SESSION(session, "Completed unblocking session\n"); } /** @@ -579,10 +621,12 @@ static void __iscsi_block_session(struct work_struct *work) block_work); unsigned long flags; + ISCSI_DBG_TRANS_SESSION(session, "Blocking session\n"); spin_lock_irqsave(&session->lock, flags); session->state = ISCSI_SESSION_FAILED; spin_unlock_irqrestore(&session->lock, flags); scsi_target_block(&session->dev); + ISCSI_DBG_TRANS_SESSION(session, "Completed SCSI target blocking\n"); queue_delayed_work(iscsi_eh_timer_workq, &session->recovery_work, session->recovery_tmo * HZ); } @@ -602,6 +646,8 @@ static void __iscsi_unbind_session(struct work_struct *work) struct iscsi_cls_host *ihost = shost->shost_data; unsigned long flags; + ISCSI_DBG_TRANS_SESSION(session, "Unbinding session\n"); + /* Prevent new scans and make sure scanning is not in progress */ mutex_lock(&ihost->mutex); spin_lock_irqsave(&session->lock, flags); @@ -616,6 +662,7 @@ static void __iscsi_unbind_session(struct work_struct *work) scsi_remove_target(&session->dev); iscsi_session_event(session, ISCSI_KEVENT_UNBIND_SESSION); + ISCSI_DBG_TRANS_SESSION(session, "Completed target removal\n"); } struct iscsi_cls_session * @@ -647,6 +694,8 @@ iscsi_alloc_session(struct Scsi_Host *shost, struct iscsi_transport *transport, device_initialize(&session->dev); if (dd_size) session->dd_data = &session[1]; + + ISCSI_DBG_TRANS_SESSION(session, "Completed session allocation\n"); return session; } EXPORT_SYMBOL_GPL(iscsi_alloc_session); @@ -712,6 +761,7 @@ int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id) spin_unlock_irqrestore(&sesslock, flags); iscsi_session_event(session, ISCSI_KEVENT_CREATE_SESSION); + ISCSI_DBG_TRANS_SESSION(session, "Completed session adding\n"); return 0; release_host: @@ -752,6 +802,7 @@ static void iscsi_conn_release(struct device *dev) struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev); struct device *parent = conn->dev.parent; + ISCSI_DBG_TRANS_CONN(conn, "Releasing conn\n"); kfree(conn); put_device(parent); } @@ -774,6 +825,8 @@ void iscsi_remove_session(struct iscsi_cls_session *session) unsigned long flags; int err; + ISCSI_DBG_TRANS_SESSION(session, "Removing session\n"); + spin_lock_irqsave(&sesslock, flags); list_del(&session->sess_list); spin_unlock_irqrestore(&sesslock, flags); @@ -807,12 +860,15 @@ void iscsi_remove_session(struct iscsi_cls_session *session) "for session. Error %d.\n", err); transport_unregister_device(&session->dev); + + ISCSI_DBG_TRANS_SESSION(session, "Completing session removal\n"); device_del(&session->dev); } EXPORT_SYMBOL_GPL(iscsi_remove_session); void iscsi_free_session(struct iscsi_cls_session *session) { + ISCSI_DBG_TRANS_SESSION(session, "Freeing session\n"); iscsi_session_event(session, ISCSI_KEVENT_DESTROY_SESSION); put_device(&session->dev); } @@ -828,6 +884,7 @@ EXPORT_SYMBOL_GPL(iscsi_free_session); int iscsi_destroy_session(struct iscsi_cls_session *session) { iscsi_remove_session(session); + ISCSI_DBG_TRANS_SESSION(session, "Completing session destruction\n"); iscsi_free_session(session); return 0; } @@ -885,6 +942,8 @@ iscsi_create_conn(struct iscsi_cls_session *session, int dd_size, uint32_t cid) list_add(&conn->conn_list, &connlist); conn->active = 1; spin_unlock_irqrestore(&connlock, flags); + + ISCSI_DBG_TRANS_CONN(conn, "Completed conn creation\n"); return conn; release_parent_ref: @@ -912,6 +971,7 @@ int iscsi_destroy_conn(struct iscsi_cls_conn *conn) spin_unlock_irqrestore(&connlock, flags); transport_unregister_device(&conn->dev); + ISCSI_DBG_TRANS_CONN(conn, "Completing conn destruction\n"); device_unregister(&conn->dev); return 0; } @@ -1200,6 +1260,9 @@ int iscsi_session_event(struct iscsi_cls_session *session, "Cannot notify userspace of session " "event %u. Check iscsi daemon\n", event); + + ISCSI_DBG_TRANS_SESSION(session, "Completed handling event %d rc %d\n", + event, rc); return rc; } EXPORT_SYMBOL_GPL(iscsi_session_event); @@ -1221,6 +1284,8 @@ iscsi_if_create_session(struct iscsi_internal *priv, struct iscsi_endpoint *ep, shost = iscsi_session_to_shost(session); ev->r.c_session_ret.host_no = shost->host_no; ev->r.c_session_ret.sid = session->sid; + ISCSI_DBG_TRANS_SESSION(session, + "Completed creating transport session\n"); return 0; } @@ -1246,6 +1311,8 @@ iscsi_if_create_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev) ev->r.c_conn_ret.sid = session->sid; ev->r.c_conn_ret.cid = conn->cid; + + ISCSI_DBG_TRANS_CONN(conn, "Completed creating transport conn\n"); return 0; } @@ -1258,8 +1325,10 @@ iscsi_if_destroy_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev if (!conn) return -EINVAL; + ISCSI_DBG_TRANS_CONN(conn, "Destroying transport conn\n"); if (transport->destroy_conn) transport->destroy_conn(conn); + return 0; } diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c index 0895d3c..fd47cb1 100644 --- a/drivers/scsi/scsi_transport_sas.c +++ b/drivers/scsi/scsi_transport_sas.c @@ -1692,10 +1692,6 @@ sas_attach_transport(struct sas_function_template *ft) i->f = ft; count = 0; - SETUP_PORT_ATTRIBUTE(num_phys); - i->host_attrs[count] = NULL; - - count = 0; SETUP_PHY_ATTRIBUTE(initiator_port_protocols); SETUP_PHY_ATTRIBUTE(target_port_protocols); SETUP_PHY_ATTRIBUTE(device_type); diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index b7b9fec..a89c421 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -2021,6 +2021,7 @@ static void sd_probe_async(void *data, async_cookie_t cookie) sd_printk(KERN_NOTICE, sdkp, "Attached SCSI %sdisk\n", sdp->removable ? "removable " : ""); + put_device(&sdkp->dev); } /** @@ -2106,6 +2107,7 @@ static int sd_probe(struct device *dev) get_device(&sdp->sdev_gendev); + get_device(&sdkp->dev); /* prevent release before async_schedule */ async_schedule(sd_probe_async, sdkp); return 0; diff --git a/drivers/scsi/ses.c b/drivers/scsi/ses.c index 4f618f4..55b034b 100644 --- a/drivers/scsi/ses.c +++ b/drivers/scsi/ses.c @@ -347,6 +347,97 @@ static int ses_enclosure_find_by_addr(struct enclosure_device *edev, return 0; } +#define INIT_ALLOC_SIZE 32 + +static void ses_enclosure_data_process(struct enclosure_device *edev, + struct scsi_device *sdev, + int create) +{ + u32 result; + unsigned char *buf = NULL, *type_ptr, *desc_ptr, *addl_desc_ptr = NULL; + int i, j, page7_len, len, components; + struct ses_device *ses_dev = edev->scratch; + int types = ses_dev->page1[10]; + unsigned char *hdr_buf = kzalloc(INIT_ALLOC_SIZE, GFP_KERNEL); + + if (!hdr_buf) + goto simple_populate; + + /* re-read page 10 */ + if (ses_dev->page10) + ses_recv_diag(sdev, 10, ses_dev->page10, ses_dev->page10_len); + /* Page 7 for the descriptors is optional */ + result = ses_recv_diag(sdev, 7, hdr_buf, INIT_ALLOC_SIZE); + if (result) + goto simple_populate; + + page7_len = len = (hdr_buf[2] << 8) + hdr_buf[3] + 4; + /* add 1 for trailing '\0' we'll use */ + buf = kzalloc(len + 1, GFP_KERNEL); + if (!buf) + goto simple_populate; + result = ses_recv_diag(sdev, 7, buf, len); + if (result) { + simple_populate: + kfree(buf); + buf = NULL; + desc_ptr = NULL; + len = 0; + page7_len = 0; + } else { + desc_ptr = buf + 8; + len = (desc_ptr[2] << 8) + desc_ptr[3]; + /* skip past overall descriptor */ + desc_ptr += len + 4; + if (ses_dev->page10) + addl_desc_ptr = ses_dev->page10 + 8; + } + type_ptr = ses_dev->page1 + 12 + ses_dev->page1[11]; + components = 0; + for (i = 0; i < types; i++, type_ptr += 4) { + for (j = 0; j < type_ptr[1]; j++) { + char *name = NULL; + struct enclosure_component *ecomp; + + if (desc_ptr) { + if (desc_ptr >= buf + page7_len) { + desc_ptr = NULL; + } else { + len = (desc_ptr[2] << 8) + desc_ptr[3]; + desc_ptr += 4; + /* Add trailing zero - pushes into + * reserved space */ + desc_ptr[len] = '\0'; + name = desc_ptr; + } + } + if (type_ptr[0] == ENCLOSURE_COMPONENT_DEVICE || + type_ptr[0] == ENCLOSURE_COMPONENT_ARRAY_DEVICE) { + + if (create) + ecomp = enclosure_component_register(edev, + components++, + type_ptr[0], + name); + else + ecomp = &edev->component[components++]; + + if (!IS_ERR(ecomp) && addl_desc_ptr) + ses_process_descriptor(ecomp, + addl_desc_ptr); + } + if (desc_ptr) + desc_ptr += len; + + if (addl_desc_ptr) + addl_desc_ptr += addl_desc_ptr[1] + 2; + + } + } + kfree(buf); + kfree(hdr_buf); +} + static void ses_match_to_enclosure(struct enclosure_device *edev, struct scsi_device *sdev) { @@ -361,6 +452,8 @@ static void ses_match_to_enclosure(struct enclosure_device *edev, if (!buf) return; + ses_enclosure_data_process(edev, to_scsi_device(edev->edev.parent), 0); + vpd_len = ((buf[2] << 8) | buf[3]) + 4; desc = buf + 4; @@ -395,28 +488,26 @@ static void ses_match_to_enclosure(struct enclosure_device *edev, kfree(buf); } -#define INIT_ALLOC_SIZE 32 - static int ses_intf_add(struct device *cdev, struct class_interface *intf) { struct scsi_device *sdev = to_scsi_device(cdev->parent); struct scsi_device *tmp_sdev; - unsigned char *buf = NULL, *hdr_buf, *type_ptr, *desc_ptr = NULL, - *addl_desc_ptr = NULL; + unsigned char *buf = NULL, *hdr_buf, *type_ptr; struct ses_device *ses_dev; u32 result; - int i, j, types, len, page7_len = 0, components = 0; + int i, types, len, components = 0; int err = -ENOMEM; struct enclosure_device *edev; struct ses_component *scomp = NULL; if (!scsi_device_enclosure(sdev)) { /* not an enclosure, but might be in one */ - edev = enclosure_find(&sdev->host->shost_gendev); - if (edev) { + struct enclosure_device *prev = NULL; + + while ((edev = enclosure_find(&sdev->host->shost_gendev, prev)) != NULL) { ses_match_to_enclosure(edev, sdev); - put_device(&edev->edev); + prev = edev; } return -ENODEV; } @@ -500,6 +591,7 @@ static int ses_intf_add(struct device *cdev, ses_dev->page10_len = len; buf = NULL; } + kfree(hdr_buf); scomp = kzalloc(sizeof(struct ses_component) * components, GFP_KERNEL); if (!scomp) @@ -516,72 +608,7 @@ static int ses_intf_add(struct device *cdev, for (i = 0; i < components; i++) edev->component[i].scratch = scomp + i; - /* Page 7 for the descriptors is optional */ - result = ses_recv_diag(sdev, 7, hdr_buf, INIT_ALLOC_SIZE); - if (result) - goto simple_populate; - - page7_len = len = (hdr_buf[2] << 8) + hdr_buf[3] + 4; - /* add 1 for trailing '\0' we'll use */ - buf = kzalloc(len + 1, GFP_KERNEL); - if (!buf) - goto simple_populate; - result = ses_recv_diag(sdev, 7, buf, len); - if (result) { - simple_populate: - kfree(buf); - buf = NULL; - desc_ptr = NULL; - addl_desc_ptr = NULL; - } else { - desc_ptr = buf + 8; - len = (desc_ptr[2] << 8) + desc_ptr[3]; - /* skip past overall descriptor */ - desc_ptr += len + 4; - if (ses_dev->page10) - addl_desc_ptr = ses_dev->page10 + 8; - } - type_ptr = ses_dev->page1 + 12 + ses_dev->page1[11]; - components = 0; - for (i = 0; i < types; i++, type_ptr += 4) { - for (j = 0; j < type_ptr[1]; j++) { - char *name = NULL; - struct enclosure_component *ecomp; - - if (desc_ptr) { - if (desc_ptr >= buf + page7_len) { - desc_ptr = NULL; - } else { - len = (desc_ptr[2] << 8) + desc_ptr[3]; - desc_ptr += 4; - /* Add trailing zero - pushes into - * reserved space */ - desc_ptr[len] = '\0'; - name = desc_ptr; - } - } - if (type_ptr[0] == ENCLOSURE_COMPONENT_DEVICE || - type_ptr[0] == ENCLOSURE_COMPONENT_ARRAY_DEVICE) { - - ecomp = enclosure_component_register(edev, - components++, - type_ptr[0], - name); - - if (!IS_ERR(ecomp) && addl_desc_ptr) - ses_process_descriptor(ecomp, - addl_desc_ptr); - } - if (desc_ptr) - desc_ptr += len; - - if (addl_desc_ptr) - addl_desc_ptr += addl_desc_ptr[1] + 2; - - } - } - kfree(buf); - kfree(hdr_buf); + ses_enclosure_data_process(edev, sdev, 1); /* see if there are any devices matching before * we found the enclosure */ @@ -615,17 +642,26 @@ static int ses_remove(struct device *dev) return 0; } -static void ses_intf_remove(struct device *cdev, - struct class_interface *intf) +static void ses_intf_remove_component(struct scsi_device *sdev) +{ + struct enclosure_device *edev, *prev = NULL; + + while ((edev = enclosure_find(&sdev->host->shost_gendev, prev)) != NULL) { + prev = edev; + if (!enclosure_remove_device(edev, &sdev->sdev_gendev)) + break; + } + if (edev) + put_device(&edev->edev); +} + +static void ses_intf_remove_enclosure(struct scsi_device *sdev) { - struct scsi_device *sdev = to_scsi_device(cdev->parent); struct enclosure_device *edev; struct ses_device *ses_dev; - if (!scsi_device_enclosure(sdev)) - return; - - edev = enclosure_find(cdev->parent); + /* exact match to this enclosure */ + edev = enclosure_find(&sdev->sdev_gendev, NULL); if (!edev) return; @@ -643,6 +679,17 @@ static void ses_intf_remove(struct device *cdev, enclosure_unregister(edev); } +static void ses_intf_remove(struct device *cdev, + struct class_interface *intf) +{ + struct scsi_device *sdev = to_scsi_device(cdev->parent); + + if (!scsi_device_enclosure(sdev)) + ses_intf_remove_component(sdev); + else + ses_intf_remove_enclosure(sdev); +} + static struct class_interface ses_interface = { .add_dev = ses_intf_add, .remove_dev = ses_intf_remove, diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index 9230402..4968c4c 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -1811,7 +1811,7 @@ retry: return 0; out: for (i = 0; i < k; i++) - __free_pages(schp->pages[k], order); + __free_pages(schp->pages[i], order); if (--order >= 0) goto retry; diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c index 8d2a95c..09fa886 100644 --- a/drivers/scsi/stex.c +++ b/drivers/scsi/stex.c @@ -55,6 +55,7 @@ enum { OIS = 0x30, /* MU_OUTBOUND_INTERRUPT_STATUS */ OIM = 0x3c, /* MU_OUTBOUND_INTERRUPT_MASK */ + YIOA_STATUS = 0x00, YH2I_INT = 0x20, YINT_EN = 0x34, YI2H_INT = 0x9c, @@ -108,6 +109,10 @@ enum { SS_HEAD_HANDSHAKE = 0x80, + SS_H2I_INT_RESET = 0x100, + + SS_MU_OPERATIONAL = 0x80000000, + STEX_CDB_LENGTH = 16, STATUS_VAR_LEN = 128, @@ -884,7 +889,7 @@ static void stex_ss_mu_intr(struct st_hba *hba) tag = (u16)value; if (unlikely(tag >= hba->host->can_queue)) { printk(KERN_WARNING DRV_NAME - "(%s): invalid tag\n", pci_name(hba->pdev)); + "(%s): invalid tag\n", pci_name(hba->pdev)); continue; } @@ -1040,16 +1045,27 @@ static int stex_ss_handshake(struct st_hba *hba) void __iomem *base = hba->mmio_base; struct st_msg_header *msg_h; struct handshake_frame *h; - __le32 *scratch = hba->scratch; + __le32 *scratch; u32 data; unsigned long before; int ret = 0; - h = (struct handshake_frame *)(hba->alloc_rq(hba)); - msg_h = (struct st_msg_header *)h - 1; + before = jiffies; + while ((readl(base + YIOA_STATUS) & SS_MU_OPERATIONAL) == 0) { + if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { + printk(KERN_ERR DRV_NAME + "(%s): firmware not operational\n", + pci_name(hba->pdev)); + return -1; + } + msleep(1); + } + + msg_h = (struct st_msg_header *)hba->dma_mem; msg_h->handle = cpu_to_le64(hba->dma_handle); msg_h->flag = SS_HEAD_HANDSHAKE; + h = (struct handshake_frame *)(msg_h + 1); h->rb_phy = cpu_to_le64(hba->dma_handle); h->req_sz = cpu_to_le16(hba->rq_size); h->req_cnt = cpu_to_le16(hba->rq_count+1); @@ -1205,6 +1221,13 @@ static void stex_hard_reset(struct st_hba *hba) hba->pdev->saved_config_space[i]); } +static void stex_ss_reset(struct st_hba *hba) +{ + writel(SS_H2I_INT_RESET, hba->mmio_base + YH2I_INT); + readl(hba->mmio_base + YH2I_INT); + ssleep(5); +} + static int stex_reset(struct scsi_cmnd *cmd) { struct st_hba *hba; @@ -1221,6 +1244,8 @@ static int stex_reset(struct scsi_cmnd *cmd) if (hba->cardtype == st_shasta) stex_hard_reset(hba); + else if (hba->cardtype == st_yel) + stex_ss_reset(hba); if (hba->cardtype != st_yosemite) { if (stex_handshake(hba)) { |
