diff options
Diffstat (limited to 'drivers/scsi/ipr.c')
| -rw-r--r-- | drivers/scsi/ipr.c | 690 |
1 files changed, 668 insertions, 22 deletions
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 7ed4eef..2dde821 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -70,6 +70,7 @@ #include <linux/firmware.h> #include <linux/module.h> #include <linux/moduleparam.h> +#include <linux/libata.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/processor.h> @@ -78,6 +79,7 @@ #include <scsi/scsi_tcq.h> #include <scsi/scsi_eh.h> #include <scsi/scsi_cmnd.h> +#include <scsi/scsi_transport.h> #include "ipr.h" /* @@ -199,6 +201,8 @@ struct ipr_error_table_t ipr_error_table[] = { "FFFA: Undefined device response recovered by the IOA"}, {0x014A0000, 1, 1, "FFF6: Device bus error, message or command phase"}, + {0x014A8000, 0, 1, + "FFFE: Task Management Function failed"}, {0x015D0000, 0, 1, "FFF6: Failure prediction threshold exceeded"}, {0x015D9200, 0, 1, @@ -261,6 +265,8 @@ struct ipr_error_table_t ipr_error_table[] = { "Device bus status error"}, {0x04448600, 0, 1, "8157: IOA error requiring IOA reset to recover"}, + {0x04448700, 0, 0, + "ATA device status error"}, {0x04490000, 0, 0, "Message reject received from the device"}, {0x04449200, 0, 1, @@ -273,6 +279,8 @@ struct ipr_error_table_t ipr_error_table[] = { "9082: IOA detected device error"}, {0x044A0000, 1, 1, "3110: Device bus error, message or command phase"}, + {0x044A8000, 1, 1, + "3110: SAS Command / Task Management Function failed"}, {0x04670400, 0, 1, "9091: Incorrect hardware configuration change has been detected"}, {0x04678000, 0, 1, @@ -453,7 +461,8 @@ static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd, trace_entry->time = jiffies; trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0]; trace_entry->type = type; - trace_entry->cmd_index = ipr_cmd->cmd_index; + trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command; + trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff; trace_entry->res_handle = ipr_cmd->ioarcb.res_handle; trace_entry->u.add_data = add_data; } @@ -480,8 +489,10 @@ static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd) ioarcb->read_ioadl_len = 0; ioasa->ioasc = 0; ioasa->residual_data_len = 0; + ioasa->u.gata.status = 0; ipr_cmd->scsi_cmd = NULL; + ipr_cmd->qc = NULL; ipr_cmd->sense_buffer[0] = 0; ipr_cmd->dma_use_sg = 0; } @@ -626,6 +637,28 @@ static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg) } /** + * ipr_sata_eh_done - done function for aborted SATA commands + * @ipr_cmd: ipr command struct + * + * This function is invoked for ops generated to SATA + * devices which are being aborted. + * + * Return value: + * none + **/ +static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd) +{ + struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; + struct ata_queued_cmd *qc = ipr_cmd->qc; + struct ipr_sata_port *sata_port = qc->ap->private_data; + + qc->err_mask |= AC_ERR_OTHER; + sata_port->ioasa.status |= ATA_BUSY; + list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); + ata_qc_complete(qc); +} + +/** * ipr_scsi_eh_done - mid-layer done function for aborted ops * @ipr_cmd: ipr command struct * @@ -669,6 +702,8 @@ static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg) if (ipr_cmd->scsi_cmd) ipr_cmd->done = ipr_scsi_eh_done; + else if (ipr_cmd->qc) + ipr_cmd->done = ipr_sata_eh_done; ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET); del_timer(&ipr_cmd->timer); @@ -825,6 +860,7 @@ static void ipr_init_res_entry(struct ipr_resource_entry *res) res->del_from_ml = 0; res->resetting_device = 0; res->sdev = NULL; + res->sata_port = NULL; } /** @@ -1316,7 +1352,7 @@ static u32 ipr_get_error(u32 ioasc) int i; for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++) - if (ipr_error_table[i].ioasc == ioasc) + if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK)) return i; return 0; @@ -3051,6 +3087,17 @@ static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; }; **/ static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth) { + struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata; + struct ipr_resource_entry *res; + unsigned long lock_flags = 0; + + spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); + res = (struct ipr_resource_entry *)sdev->hostdata; + + if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN) + qdepth = IPR_MAX_CMD_PER_ATA_LUN; + spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); + scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); return sdev->queue_depth; } @@ -3166,6 +3213,122 @@ static int ipr_biosparam(struct scsi_device *sdev, } /** + * ipr_find_starget - Find target based on bus/target. + * @starget: scsi target struct + * + * Return value: + * resource entry pointer if found / NULL if not found + **/ +static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget) +{ + struct Scsi_Host *shost = dev_to_shost(&starget->dev); + struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; + struct ipr_resource_entry *res; + + list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { + if ((res->cfgte.res_addr.bus == starget->channel) && + (res->cfgte.res_addr.target == starget->id) && + (res->cfgte.res_addr.lun == 0)) { + return res; + } + } + + return NULL; +} + +static struct ata_port_info sata_port_info; + +/** + * ipr_target_alloc - Prepare for commands to a SCSI target + * @starget: scsi target struct + * + * If the device is a SATA device, this function allocates an + * ATA port with libata, else it does nothing. + * + * Return value: + * 0 on success / non-0 on failure + **/ +static int ipr_target_alloc(struct scsi_target *starget) +{ + struct Scsi_Host *shost = dev_to_shost(&starget->dev); + struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata; + struct ipr_sata_port *sata_port; + struct ata_port *ap; + struct ipr_resource_entry *res; + unsigned long lock_flags; + + spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); + res = ipr_find_starget(starget); + starget->hostdata = NULL; + + if (res && ipr_is_gata(res)) { + spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); + sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL); + if (!sata_port) + return -ENOMEM; + + ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost); + if (ap) { + spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); + sata_port->ioa_cfg = ioa_cfg; + sata_port->ap = ap; + sata_port->res = res; + + res->sata_port = sata_port; + ap->private_data = sata_port; + starget->hostdata = sata_port; + } else { + kfree(sata_port); + return -ENOMEM; + } + } + spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); + + return 0; +} + +/** + * ipr_target_destroy - Destroy a SCSI target + * @starget: scsi target struct + * + * If the device was a SATA device, this function frees the libata + * ATA port, else it does nothing. + * + **/ +static void ipr_target_destroy(struct scsi_target *starget) +{ + struct ipr_sata_port *sata_port = starget->hostdata; + + if (sata_port) { + starget->hostdata = NULL; + ata_sas_port_destroy(sata_port->ap); + kfree(sata_port); + } +} + +/** + * ipr_find_sdev - Find device based on bus/target/lun. + * @sdev: scsi device struct + * + * Return value: + * resource entry pointer if found / NULL if not found + **/ +static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev) +{ + struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata; + struct ipr_resource_entry *res; + + list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { + if ((res->cfgte.res_addr.bus == sdev->channel) && + (res->cfgte.res_addr.target == sdev->id) && + (res->cfgte.res_addr.lun == sdev->lun)) + return res; + } + + return NULL; +} + +/** * ipr_slave_destroy - Unconfigure a SCSI device * @sdev: scsi device struct * @@ -3183,8 +3346,11 @@ static void ipr_slave_destroy(struct scsi_device *sdev) spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); res = (struct ipr_resource_entry *) sdev->hostdata; if (res) { + if (res->sata_port) + ata_port_disable(res->sata_port->ap); sdev->hostdata = NULL; res->sdev = NULL; + res->sata_port = NULL; } spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); } @@ -3219,13 +3385,45 @@ static int ipr_slave_configure(struct scsi_device *sdev) } if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)) sdev->allow_restart = 1; - scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); + if (ipr_is_gata(res) && res->sata_port) { + scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN); + ata_sas_slave_configure(sdev, res->sata_port->ap); + } else { + scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun); + } } spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); return 0; } /** + * ipr_ata_slave_alloc - Prepare for commands to a SATA device + * @sdev: scsi device struct + * + * This function initializes an ATA port so that future commands + * sent through queuecommand will work. + * + * Return value: + * 0 on success + **/ +static int ipr_ata_slave_alloc(struct scsi_device *sdev) +{ + struct ipr_sata_port *sata_port = NULL; + int rc = -ENXIO; + + ENTER; + if (sdev->sdev_target) + sata_port = sdev->sdev_target->hostdata; + if (sata_port) + rc = ata_sas_port_init(sata_port->ap); + if (rc) + ipr_slave_destroy(sdev); + + LEAVE; + return rc; +} + +/** * ipr_slave_alloc - Prepare for commands to a device. * @sdev: scsi device struct * @@ -3248,18 +3446,18 @@ static int ipr_slave_alloc(struct scsi_device *sdev) spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); - list_for_each_entry(res, &ioa_cfg->used_res_q, queue) { - if ((res->cfgte.res_addr.bus == sdev->channel) && - (res->cfgte.res_addr.target == sdev->id) && - (res->cfgte.res_addr.lun == sdev->lun)) { - res->sdev = sdev; - res->add_to_ml = 0; - res->in_erp = 0; - sdev->hostdata = res; - if (!ipr_is_naca_model(res)) - res->needs_sync_complete = 1; - rc = 0; - break; + res = ipr_find_sdev(sdev); + if (res) { + res->sdev = sdev; + res->add_to_ml = 0; + res->in_erp = 0; + sdev->hostdata = res; + if (!ipr_is_naca_model(res)) + res->needs_sync_complete = 1; + rc = 0; + if (ipr_is_gata(res)) { + spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); + return ipr_ata_slave_alloc(sdev); } } @@ -3314,7 +3512,8 @@ static int ipr_eh_host_reset(struct scsi_cmnd * cmd) * This function issues a device reset to the affected device. * If the device is a SCSI device, a LUN reset will be sent * to the device first. If that does not work, a target reset - * will be sent. + * will be sent. If the device is a SATA device, a PHY reset will + * be sent. * * Return value: * 0 on success / non-zero on failure @@ -3325,26 +3524,79 @@ static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg, struct ipr_cmnd *ipr_cmd; struct ipr_ioarcb *ioarcb; struct ipr_cmd_pkt *cmd_pkt; + struct ipr_ioarcb_ata_regs *regs; u32 ioasc; ENTER; ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); ioarcb = &ipr_cmd->ioarcb; cmd_pkt = &ioarcb->cmd_pkt; + regs = &ioarcb->add_data.u.regs; ioarcb->res_handle = res->cfgte.res_handle; cmd_pkt->request_type = IPR_RQTYPE_IOACMD; cmd_pkt->cdb[0] = IPR_RESET_DEVICE; + if (ipr_is_gata(res)) { + cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET; + ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags)); + regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; + } ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT); ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); + if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) + memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata, + sizeof(struct ipr_ioasa_gata)); LEAVE; return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0); } /** + * ipr_sata_reset - Reset the SATA port + * @ap: SATA port to reset + * @classes: class of the attached device + * + * This function issues a SATA phy reset to the affected ATA port. + * + * Return value: + * 0 on success / non-zero on failure + **/ +static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes) +{ + struct ipr_sata_port *sata_port = ap->private_data; + struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; + struct ipr_resource_entry *res; + unsigned long lock_flags = 0; + int rc = -ENXIO; + + ENTER; + spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); + res = sata_port->res; + if (res) { + rc = ipr_device_reset(ioa_cfg, res); + switch(res->cfgte.proto) { + case IPR_PROTO_SATA: + case IPR_PROTO_SAS_STP: + *classes = ATA_DEV_ATA; + break; + case IPR_PROTO_SATA_ATAPI: + case IPR_PROTO_SAS_STP_ATAPI: + *classes = ATA_DEV_ATAPI; + break; + default: + *classes = ATA_DEV_UNKNOWN; + break; + }; + } + + spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); + LEAVE; + return rc; +} + +/** * ipr_eh_dev_reset - Reset the device * @scsi_cmd: scsi command struct * @@ -3360,7 +3612,8 @@ static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) struct ipr_cmnd *ipr_cmd; struct ipr_ioa_cfg *ioa_cfg; struct ipr_resource_entry *res; - int rc; + struct ata_port *ap; + int rc = 0; ENTER; ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; @@ -3388,7 +3641,14 @@ static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd) res->resetting_device = 1; scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n"); - rc = ipr_device_reset(ioa_cfg, res); + + if (ipr_is_gata(res) && res->sata_port) { + ap = res->sata_port->ap; + spin_unlock_irq(scsi_cmd->device->host->host_lock); + ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL); + spin_lock_irq(scsi_cmd->device->host->host_lock); + } else + rc = ipr_device_reset(ioa_cfg, res); res->resetting_device = 0; LEAVE; @@ -3620,12 +3880,11 @@ static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg, * ipr_isr - Interrupt service routine * @irq: irq number * @devp: pointer to ioa config struct - * @regs: pt_regs struct * * Return value: * IRQ_NONE / IRQ_HANDLED **/ -static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs) +static irqreturn_t ipr_isr(int irq, void *devp) { struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp; unsigned long lock_flags = 0; @@ -4300,6 +4559,9 @@ static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, return 0; } + if (ipr_is_gata(res) && res->sata_port) + return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap); + ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); ioarcb = &ipr_cmd->ioarcb; list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); @@ -4345,6 +4607,26 @@ static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd, } /** + * ipr_ioctl - IOCTL handler + * @sdev: scsi device struct + * @cmd: IOCTL cmd + * @arg: IOCTL arg + * + * Return value: + * 0 on success / other on failure + **/ +int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) +{ + struct ipr_resource_entry *res; + + res = (struct ipr_resource_entry *)sdev->hostdata; + if (res && ipr_is_gata(res)) + return ata_scsi_ioctl(sdev, cmd, arg); + + return -EINVAL; +} + +/** * ipr_info - Get information about the card/driver * @scsi_host: scsi host struct * @@ -4366,10 +4648,45 @@ static const char * ipr_ioa_info(struct Scsi_Host *host) return buffer; } +/** + * ipr_scsi_timed_out - Handle scsi command timeout + * @scsi_cmd: scsi command struct + * + * Return value: + * EH_NOT_HANDLED + **/ +enum scsi_eh_timer_return ipr_scsi_timed_out(struct scsi_cmnd *scsi_cmd) +{ + struct ipr_ioa_cfg *ioa_cfg; + struct ipr_cmnd *ipr_cmd; + unsigned long flags; + + ENTER; + spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); + ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata; + + list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { + if (ipr_cmd->qc && ipr_cmd->qc->scsicmd == scsi_cmd) { + ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT; + ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED; + break; + } + } + + spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); + LEAVE; + return EH_NOT_HANDLED; +} + +static struct scsi_transport_template ipr_transport_template = { + .eh_timed_out = ipr_scsi_timed_out +}; + static struct scsi_host_template driver_template = { .module = THIS_MODULE, .name = "IPR", .info = ipr_ioa_info, + .ioctl = ipr_ioctl, .queuecommand = ipr_queuecommand, .eh_abort_handler = ipr_eh_abort, .eh_device_reset_handler = ipr_eh_dev_reset, @@ -4377,6 +4694,8 @@ static struct scsi_host_template driver_template = { .slave_alloc = ipr_slave_alloc, .slave_configure = ipr_slave_configure, .slave_destroy = ipr_slave_destroy, + .target_alloc = ipr_target_alloc, + .target_destroy = ipr_target_destroy, .change_queue_depth = ipr_change_queue_depth, .change_queue_type = ipr_change_queue_type, .bios_param = ipr_biosparam, @@ -4391,6 +4710,330 @@ static struct scsi_host_template driver_template = { .proc_name = IPR_NAME }; +/** + * ipr_ata_phy_reset - libata phy_reset handler + * @ap: ata port to reset + * + **/ +static void ipr_ata_phy_reset(struct ata_port *ap) +{ + unsigned long flags; + struct ipr_sata_port *sata_port = ap->private_data; + struct ipr_resource_entry *res = sata_port->res; + struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; + int rc; + + ENTER; + spin_lock_irqsave(ioa_cfg->host->host_lock, flags); + while(ioa_cfg->in_reset_reload) { + spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); + wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); + spin_lock_irqsave(ioa_cfg->host->host_lock, flags); + } + + if (!ioa_cfg->allow_cmds) + goto out_unlock; + + rc = ipr_device_reset(ioa_cfg, res); + + if (rc) { + ap->ops->port_disable(ap); + goto out_unlock; + } + + switch(res->cfgte.proto) { + case IPR_PROTO_SATA: + case IPR_PROTO_SAS_STP: + ap->device[0].class = ATA_DEV_ATA; + break; + case IPR_PROTO_SATA_ATAPI: + case IPR_PROTO_SAS_STP_ATAPI: + ap->device[0].class = ATA_DEV_ATAPI; + break; + default: + ap->device[0].class = ATA_DEV_UNKNOWN; + ap->ops->port_disable(ap); + break; + }; + +out_unlock: + spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); + LEAVE; +} + +/** + * ipr_ata_post_internal - Cleanup after an internal command + * @qc: ATA queued command + * + * Return value: + * none + **/ +static void ipr_ata_post_internal(struct ata_queued_cmd *qc) +{ + struct ipr_sata_port *sata_port = qc->ap->private_data; + struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; + struct ipr_cmnd *ipr_cmd; + unsigned long flags; + + spin_lock_irqsave(ioa_cfg->host->host_lock, flags); + list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { + if (ipr_cmd->qc == qc) { + ipr_device_reset(ioa_cfg, sata_port->res); + break; + } + } + spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); +} + +/** + * ipr_tf_read - Read the current ATA taskfile for the ATA port + * @ap: ATA port + * @tf: destination ATA taskfile + * + * Return value: + * none + **/ +static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf) +{ + struct ipr_sata_port *sata_port = ap->private_data; + struct ipr_ioasa_gata *g = &sata_port->ioasa; + + tf->feature = g->error; + tf->nsect = g->nsect; + tf->lbal = g->lbal; + tf->lbam = g->lbam; + tf->lbah = g->lbah; + tf->device = g->device; + tf->command = g->status; + tf->hob_nsect = g->hob_nsect; + tf->hob_lbal = g->hob_lbal; + tf->hob_lbam = g->hob_lbam; + tf->hob_lbah = g->hob_lbah; + tf->ctl = g->alt_status; +} + +/** + * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure + * @regs: destination + * @tf: source ATA taskfile + * + * Return value: + * none + **/ +static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs, + struct ata_taskfile *tf) +{ + regs->feature = tf->feature; + regs->nsect = tf->nsect; + regs->lbal = tf->lbal; + regs->lbam = tf->lbam; + regs->lbah = tf->lbah; + regs->device = tf->device; + regs->command = tf->command; + regs->hob_feature = tf->hob_feature; + regs->hob_nsect = tf->hob_nsect; + regs->hob_lbal = tf->hob_lbal; + regs->hob_lbam = tf->hob_lbam; + regs->hob_lbah = tf->hob_lbah; + regs->ctl = tf->ctl; +} + +/** + * ipr_sata_done - done function for SATA commands + * @ipr_cmd: ipr command struct + * + * This function is invoked by the interrupt handler for + * ops generated by the SCSI mid-layer to SATA devices + * + * Return value: + * none + **/ +static void ipr_sata_done(struct ipr_cmnd *ipr_cmd) +{ + struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; + struct ata_queued_cmd *qc = ipr_cmd->qc; + struct ipr_sata_port *sata_port = qc->ap->private_data; + struct ipr_resource_entry *res = sata_port->res; + u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc); + + memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata, + sizeof(struct ipr_ioasa_gata)); + ipr_dump_ioasa(ioa_cfg, ipr_cmd, res); + + if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET) + scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus, + res->cfgte.res_addr.target); + + if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR) + qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status); + else + qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status); + list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q); + ata_qc_complete(qc); +} + +/** + * ipr_build_ata_ioadl - Build an ATA scatter/gather list + * @ipr_cmd: ipr command struct + * @qc: ATA queued command + * + **/ +static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, + struct ata_queued_cmd *qc) +{ + u32 ioadl_flags = 0; + struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; + struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl; + int len = qc->nbytes + qc->pad_len; + struct scatterlist *sg; + + if (len == 0) + return; + + if (qc->dma_dir == DMA_TO_DEVICE) { + ioadl_flags = IPR_IOADL_FLAGS_WRITE; + ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ; + ioarcb->write_data_transfer_length = cpu_to_be32(len); + ioarcb->write_ioadl_len = + cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); + } else if (qc->dma_dir == DMA_FROM_DEVICE) { + ioadl_flags = IPR_IOADL_FLAGS_READ; + ioarcb->read_data_transfer_length = cpu_to_be32(len); + ioarcb->read_ioadl_len = + cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); + } + + ata_for_each_sg(sg, qc) { + ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); + ioadl->address = cpu_to_be32(sg_dma_address(sg)); + if (ata_sg_is_last(sg, qc)) + ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST); + else + ioadl++; + } +} + +/** + * ipr_qc_issue - Issue a SATA qc to a device + * @qc: queued command + * + * Return value: + * 0 if success + **/ +static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) +{ + struct ata_port *ap = qc->ap; + struct ipr_sata_port *sata_port = ap->private_data; + struct ipr_resource_entry *res = sata_port->res; + struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg; + struct ipr_cmnd *ipr_cmd; + struct ipr_ioarcb *ioarcb; + struct ipr_ioarcb_ata_regs *regs; + + if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead)) + return -EIO; + + ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg); + ioarcb = &ipr_cmd->ioarcb; + regs = &ioarcb->add_data.u.regs; + + memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data)); + ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs)); + + list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q); + ipr_cmd->qc = qc; + ipr_cmd->done = ipr_sata_done; + ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle; + ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU; + ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; + ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK; + ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem; + + ipr_build_ata_ioadl(ipr_cmd, qc); + regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION; + ipr_copy_sata_tf(regs, &qc->tf); + memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN); + ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr)); + + switch (qc->tf.protocol) { + case ATA_PROT_NODATA: + case ATA_PROT_PIO: + break; + + case ATA_PROT_DMA: + regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; + break; + + case ATA_PROT_ATAPI: + case ATA_PROT_ATAPI_NODATA: + regs->flags |= IPR_ATA_FLAG_PACKET_CMD; + break; + + case ATA_PROT_ATAPI_DMA: + regs->flags |= IPR_ATA_FLAG_PACKET_CMD; + regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; + break; + + default: + WARN_ON(1); + return -1; + } + + mb(); + writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr), + ioa_cfg->regs.ioarrin_reg); + return 0; +} + +/** + * ipr_ata_check_status - Return last ATA status + * @ap: ATA port + * + * Return value: + * ATA status + **/ +static u8 ipr_ata_check_status(struct ata_port *ap) +{ + struct ipr_sata_port *sata_port = ap->private_data; + return sata_port->ioasa.status; +} + +/** + * ipr_ata_check_altstatus - Return last ATA altstatus + * @ap: ATA port + * + * Return value: + * Alt ATA status + **/ +static u8 ipr_ata_check_altstatus(struct ata_port *ap) +{ + struct ipr_sata_port *sata_port = ap->private_data; + return sata_port->ioasa.alt_status; +} + +static struct ata_port_operations ipr_sata_ops = { + .port_disable = ata_port_disable, + .check_status = ipr_ata_check_status, + .check_altstatus = ipr_ata_check_altstatus, + .dev_select = ata_noop_dev_select, + .phy_reset = ipr_ata_phy_reset, + .post_internal_cmd = ipr_ata_post_internal, + .tf_read = ipr_tf_read, + .qc_prep = ata_noop_qc_prep, + .qc_issue = ipr_qc_issue, + .port_start = ata_sas_port_start, + .port_stop = ata_sas_port_stop +}; + +static struct ata_port_info sata_port_info = { + .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET | + ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA, + .pio_mask = 0x10, /* pio4 */ + .mwdma_mask = 0x07, + .udma_mask = 0x7f, /* udma0-6 */ + .port_ops = &ipr_sata_ops +}; + #ifdef CONFIG_PPC_PSERIES static const u16 ipr_blocked_processors[] = { PV_NORTHSTAR, @@ -6352,7 +6995,7 @@ static int __devinit ipr_probe_ioa(struct pci_dev *pdev, struct Scsi_Host *host; unsigned long ipr_regs_pci; void __iomem *ipr_regs; - u32 rc = PCIBIOS_SUCCESSFUL; + int rc = PCIBIOS_SUCCESSFUL; volatile u32 mask, uproc; ENTER; @@ -6374,6 +7017,9 @@ static int __devinit ipr_probe_ioa(struct pci_dev *pdev, ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); + host->transportt = &ipr_transport_template; + ata_host_init(&ioa_cfg->ata_host, &pdev->dev, + sata_port_info.flags, &ipr_sata_ops); ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id); @@ -6749,7 +7395,7 @@ static int __init ipr_init(void) ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n", IPR_DRIVER_VERSION, IPR_DRIVER_DATE); - return pci_module_init(&ipr_driver); + return pci_register_driver(&ipr_driver); } /** |
