diff options
author | <andrew.vasquez@qlogic.com> | 2005-04-17 15:02:26 -0500 |
---|---|---|
committer | James Bottomley <jejb@titanic> | 2005-04-18 13:46:53 -0500 |
commit | f4f051ebb40e74ad0ba02d2cb3a6c16b0393472b (patch) | |
tree | cc5b5267465d833d36037bd717cef9368f6c9472 /drivers/scsi/qla2xxx | |
parent | c46f2ffb9e7fce7208c2639790e1ade42e00b146 (diff) | |
download | op-kernel-dev-f4f051ebb40e74ad0ba02d2cb3a6c16b0393472b.zip op-kernel-dev-f4f051ebb40e74ad0ba02d2cb3a6c16b0393472b.tar.gz |
[PATCH] qla2xxx: remove internal queuing...
Remove internal command queuing from the driver. As is, this
driver cannot tolerate cable-pulls as I/Os will begin to fail
by the upper layers.
o Should be used in conjuction with the
11-fc_rport_adds_2.diff patch.
o Removes qla_listops.h file -- no longer needed.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/qla2xxx')
-rw-r--r-- | drivers/scsi/qla2xxx/qla_def.h | 22 | ||||
-rw-r--r-- | drivers/scsi/qla2xxx/qla_gbl.h | 6 | ||||
-rw-r--r-- | drivers/scsi/qla2xxx/qla_init.c | 106 | ||||
-rw-r--r-- | drivers/scsi/qla2xxx/qla_iocb.c | 13 | ||||
-rw-r--r-- | drivers/scsi/qla2xxx/qla_isr.c | 147 | ||||
-rw-r--r-- | drivers/scsi/qla2xxx/qla_listops.h | 351 | ||||
-rw-r--r-- | drivers/scsi/qla2xxx/qla_os.c | 1900 |
7 files changed, 269 insertions, 2276 deletions
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 36ae031..9e3144f 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -2175,27 +2175,6 @@ typedef struct scsi_qla_host { uint32_t current_outstanding_cmd; srb_t *status_srb; /* Status continuation entry. */ - /* - * Need to hold the list_lock with irq's disabled in order to access - * the following list. - * - * This list_lock is of lower priority than the host_lock. - */ - spinlock_t list_lock ____cacheline_aligned; - /* lock to guard lists which - * hold srb_t's */ - struct list_head retry_queue; /* watchdog queue */ - struct list_head done_queue; /* job on done queue */ - struct list_head failover_queue; /* failover list link. */ - struct list_head scsi_retry_queue; /* SCSI retry queue */ - struct list_head pending_queue; /* SCSI command pending queue */ - - unsigned long done_q_cnt; - unsigned long pending_in_q; - uint32_t retry_q_cnt; - uint32_t scsi_retry_q_cnt; - uint32_t failover_cnt; - unsigned long last_irq_cpu; /* cpu where we got our last irq */ uint16_t revision; @@ -2479,7 +2458,6 @@ struct _qla2x00stats { #include "qla_gbl.h" #include "qla_dbg.h" #include "qla_inline.h" -#include "qla_listops.h" /* * String arrays diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index 5adf2af..47efa46 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -74,6 +74,7 @@ extern int ql2xsuspendcount; #if defined(MODULE) extern char *ql2xopts; #endif +extern void qla2x00_sp_compl(scsi_qla_host_t *, srb_t *); extern char *qla2x00_get_fw_version_str(struct scsi_qla_host *, char *); @@ -82,17 +83,12 @@ extern void qla2x00_cmd_timeout(srb_t *); extern int __qla2x00_suspend_lun(scsi_qla_host_t *, os_lun_t *, int, int, int); extern void qla2x00_done(scsi_qla_host_t *); -extern void qla2x00_next(scsi_qla_host_t *); extern void qla2x00_flush_failover_q(scsi_qla_host_t *, os_lun_t *); extern void qla2x00_reset_lun_fo_counts(scsi_qla_host_t *, os_lun_t *); -extern void qla2x00_extend_timeout(struct scsi_cmnd *, int); - extern void qla2x00_mark_device_lost(scsi_qla_host_t *, fc_port_t *, int); extern void qla2x00_mark_all_devices_lost(scsi_qla_host_t *); -extern void qla2x00_abort_queues(scsi_qla_host_t *, uint8_t); - extern void qla2x00_blink_led(scsi_qla_host_t *); extern int qla2x00_down_timeout(struct semaphore *, unsigned long); diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 1ab5d92..00bfbd4 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -3146,7 +3146,6 @@ qla2x00_loop_resync(scsi_qla_host_t *ha) wait_time && (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))); } - qla2x00_restart_queues(ha, 1); } if (test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) { @@ -3160,87 +3159,6 @@ qla2x00_loop_resync(scsi_qla_host_t *ha) return (rval); } -/* - * qla2x00_restart_queues - * Restart device queues. - * - * Input: - * ha = adapter block pointer. - * - * Context: - * Kernel/Interrupt context. - */ -void -qla2x00_restart_queues(scsi_qla_host_t *ha, uint8_t flush) -{ - srb_t *sp; - int retry_q_cnt = 0; - int pending_q_cnt = 0; - struct list_head *list, *temp; - unsigned long flags = 0; - - clear_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags); - - /* start pending queue */ - pending_q_cnt = ha->qthreads; - if (flush) { - spin_lock_irqsave(&ha->list_lock,flags); - list_for_each_safe(list, temp, &ha->pending_queue) { - sp = list_entry(list, srb_t, list); - - if ((sp->flags & SRB_TAPE)) - continue; - - /* - * When time expire return request back to OS as BUSY - */ - __del_from_pending_queue(ha, sp); - sp->cmd->result = DID_BUS_BUSY << 16; - sp->cmd->host_scribble = (unsigned char *)NULL; - __add_to_done_queue(ha, sp); - } - spin_unlock_irqrestore(&ha->list_lock, flags); - } else { - if (!list_empty(&ha->pending_queue)) - qla2x00_next(ha); - } - - /* - * Clear out our retry queue - */ - if (flush) { - spin_lock_irqsave(&ha->list_lock, flags); - retry_q_cnt = ha->retry_q_cnt; - list_for_each_safe(list, temp, &ha->retry_queue) { - sp = list_entry(list, srb_t, list); - /* when time expire return request back to OS as BUSY */ - __del_from_retry_queue(ha, sp); - sp->cmd->result = DID_BUS_BUSY << 16; - sp->cmd->host_scribble = (unsigned char *)NULL; - __add_to_done_queue(ha, sp); - } - spin_unlock_irqrestore(&ha->list_lock, flags); - - DEBUG2(printk("%s(%ld): callback %d commands.\n", - __func__, - ha->host_no, - retry_q_cnt);) - } - - DEBUG2(printk("%s(%ld): active=%ld, retry=%d, pending=%d, " - "done=%ld, scsi retry=%d commands.\n", - __func__, - ha->host_no, - ha->actthreads, - ha->retry_q_cnt, - pending_q_cnt, - ha->done_q_cnt, - ha->scsi_retry_q_cnt);) - - if (!list_empty(&ha->done_queue)) - qla2x00_done(ha); -} - void qla2x00_rescan_fcports(scsi_qla_host_t *ha) { @@ -3699,24 +3617,10 @@ qla2x00_abort_isp(scsi_qla_host_t *ha) ha->actthreads--; sp->lun_queue->out_cnt--; - /* - * Set the cmd host_byte status depending on - * whether the scsi_error_handler is - * active or not. - */ - if (sp->flags & SRB_TAPE) { - sp->cmd->result = DID_NO_CONNECT << 16; - } else { - if (ha->host->eh_active != EH_ACTIVE) - sp->cmd->result = - DID_BUS_BUSY << 16; - else - sp->cmd->result = - DID_RESET << 16; - } sp->flags = 0; + sp->cmd->result = DID_RESET << 16; sp->cmd->host_scribble = (unsigned char *)NULL; - add_to_done_queue(ha, sp); + qla2x00_sp_compl(ha, sp); } } spin_unlock_irqrestore(&ha->hardware_lock, flags); @@ -3739,11 +3643,6 @@ qla2x00_abort_isp(scsi_qla_host_t *ha) /* Enable ISP interrupts. */ qla2x00_enable_intrs(ha); - /* v2.19.5b6 Return all commands */ - qla2x00_abort_queues(ha, 1); - - /* Restart queues that may have been stopped. */ - qla2x00_restart_queues(ha, 1); ha->isp_abort_cnt = 0; clear_bit(ISP_ABORT_RETRY, &ha->dpc_flags); } else { /* failed the ISP abort */ @@ -3758,7 +3657,6 @@ qla2x00_abort_isp(scsi_qla_host_t *ha) * completely. */ qla2x00_reset_adapter(ha); - qla2x00_abort_queues(ha, 0); ha->flags.online = 0; clear_bit(ISP_ABORT_RETRY, &ha->dpc_flags); diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c index ec06607..6b1a045 100644 --- a/drivers/scsi/qla2xxx/qla_iocb.c +++ b/drivers/scsi/qla2xxx/qla_iocb.c @@ -334,7 +334,6 @@ qla2x00_start_scsi(srb_t *sp) uint32_t index; uint32_t handle; cmd_entry_t *cmd_pkt; - uint32_t timeout; struct scatterlist *sg; uint16_t cnt; uint16_t req_cnt; @@ -433,18 +432,6 @@ qla2x00_start_scsi(srb_t *sp) } } - /* - * Allocate at least 5 (+ QLA_CMD_TIMER_DELTA) seconds for RISC timeout. - */ - timeout = (uint32_t)(cmd->timeout_per_command / HZ); - if (timeout > 65535) - cmd_pkt->timeout = __constant_cpu_to_le16(0); - else if (timeout > 25) - cmd_pkt->timeout = cpu_to_le16((uint16_t)timeout - - (5 + QLA_CMD_TIMER_DELTA)); - else - cmd_pkt->timeout = cpu_to_le16((uint16_t)timeout); - /* Load SCSI command packet. */ memcpy(cmd_pkt->scsi_cdb, cmd->cmnd, cmd->cmd_len); cmd_pkt->byte_count = cpu_to_le32((uint32_t)cmd->request_bufflen); diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index 603d4c6..6e7eaaf 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -27,8 +27,6 @@ static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *); static void qla2x00_error_entry(scsi_qla_host_t *, sts_entry_t *); static void qla2x00_ms_entry(scsi_qla_host_t *, ms_iocb_entry_t *); -static int qla2x00_check_sense(struct scsi_cmnd *cp, os_lun_t *); - /** * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200. * @irq: @@ -93,7 +91,6 @@ qla2100_intr_handler(int irq, void *dev_id, struct pt_regs *regs) } spin_unlock_irqrestore(&ha->hardware_lock, flags); - qla2x00_next(ha); ha->last_irq_cpu = _smp_processor_id(); ha->total_isr_cnt++; @@ -107,9 +104,6 @@ qla2100_intr_handler(int irq, void *dev_id, struct pt_regs *regs) spin_unlock_irqrestore(&ha->mbx_reg_lock, flags); } - if (!list_empty(&ha->done_queue)) - qla2x00_done(ha); - return (IRQ_HANDLED); } @@ -206,7 +200,6 @@ qla2300_intr_handler(int irq, void *dev_id, struct pt_regs *regs) } spin_unlock_irqrestore(&ha->hardware_lock, flags); - qla2x00_next(ha); ha->last_irq_cpu = _smp_processor_id(); ha->total_isr_cnt++; @@ -220,9 +213,6 @@ qla2300_intr_handler(int irq, void *dev_id, struct pt_regs *regs) spin_unlock_irqrestore(&ha->mbx_reg_lock, flags); } - if (!list_empty(&ha->done_queue)) - qla2x00_done(ha); - return (IRQ_HANDLED); } @@ -714,7 +704,7 @@ qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index) /* Save ISP completion status */ sp->cmd->result = DID_OK << 16; sp->fo_retry_cnt = 0; - add_to_done_queue(ha, sp); + qla2x00_sp_compl(ha, sp); } else { DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n", ha->host_no)); @@ -914,24 +904,6 @@ qla2x00_status_entry(scsi_qla_host_t *ha, sts_entry_t *pkt) tq = sp->tgt_queue; lq = sp->lun_queue; - /* - * If loop is in transient state Report DID_BUS_BUSY - */ - if ((comp_status != CS_COMPLETE || scsi_status != 0)) { - if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) && - (atomic_read(&ha->loop_down_timer) || - atomic_read(&ha->loop_state) != LOOP_READY)) { - - DEBUG2(printk("scsi(%ld:%d:%d:%d): Loop Not Ready - " - "pid=%lx.\n", - ha->host_no, b, t, l, cp->serial_number)); - - qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT); - add_to_retry_queue(ha, sp); - return; - } - } - /* Check for any FCP transport errors. */ if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) { rsp_info_len = le16_to_cpu(pkt->rsp_info_len); @@ -945,7 +917,7 @@ qla2x00_status_entry(scsi_qla_host_t *ha, sts_entry_t *pkt) pkt->rsp_info[6], pkt->rsp_info[7])); cp->result = DID_BUS_BUSY << 16; - add_to_done_queue(ha, sp); + qla2x00_sp_compl(ha, sp); return; } } @@ -964,11 +936,6 @@ qla2x00_status_entry(scsi_qla_host_t *ha, sts_entry_t *pkt) cp->resid = resid; CMD_RESID_LEN(cp) = resid; } - if (lscsi_status == SS_BUSY_CONDITION) { - cp->result = DID_BUS_BUSY << 16 | lscsi_status; - break; - } - cp->result = DID_OK << 16 | lscsi_status; if (lscsi_status != SS_CHECK_CONDITION) @@ -1002,14 +969,6 @@ qla2x00_status_entry(scsi_qla_host_t *ha, sts_entry_t *pkt) if (sp->request_sense_length != 0) ha->status_srb = sp; - if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) && - qla2x00_check_sense(cp, lq) == QLA_SUCCESS) { - /* Throw away status_cont if any */ - ha->status_srb = NULL; - add_to_scsi_retry_queue(ha, sp); - return; - } - DEBUG5(printk("%s(): Check condition Sense data, " "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", __func__, ha->host_no, b, t, l, cp, @@ -1035,12 +994,6 @@ qla2x00_status_entry(scsi_qla_host_t *ha, sts_entry_t *pkt) * Status. */ if (lscsi_status != 0) { - if (lscsi_status == SS_BUSY_CONDITION) { - cp->result = DID_BUS_BUSY << 16 | - lscsi_status; - break; - } - cp->result = DID_OK << 16 | lscsi_status; if (lscsi_status != SS_CHECK_CONDITION) @@ -1072,12 +1025,6 @@ qla2x00_status_entry(scsi_qla_host_t *ha, sts_entry_t *pkt) if (sp->request_sense_length != 0) ha->status_srb = sp; - if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) && - (qla2x00_check_sense(cp, lq) == QLA_SUCCESS)) { - ha->status_srb = NULL; - add_to_scsi_retry_queue(ha, sp); - return; - } DEBUG5(printk("%s(): Check condition Sense data, " "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", __func__, ha->host_no, b, t, l, cp, @@ -1155,24 +1102,10 @@ qla2x00_status_entry(scsi_qla_host_t *ha, sts_entry_t *pkt) ha->host_no, t, l, cp->serial_number, comp_status, atomic_read(&fcport->state))); - if ((sp->flags & (SRB_IOCTL | SRB_TAPE)) || - atomic_read(&fcport->state) == FCS_DEVICE_DEAD) { - cp->result = DID_NO_CONNECT << 16; - if (atomic_read(&ha->loop_state) == LOOP_DOWN) - sp->err_id = SRB_ERR_LOOP; - else - sp->err_id = SRB_ERR_PORT; - add_to_done_queue(ha, sp); - } else { - qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT); - add_to_retry_queue(ha, sp); - } - + cp->result = DID_BUS_BUSY << 16; if (atomic_read(&fcport->state) == FCS_ONLINE) { qla2x00_mark_device_lost(ha, fcport, 1); } - - return; break; case CS_RESET: @@ -1180,13 +1113,7 @@ qla2x00_status_entry(scsi_qla_host_t *ha, sts_entry_t *pkt) "scsi(%ld): RESET status detected 0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status)); - if (sp->flags & (SRB_IOCTL | SRB_TAPE)) { - cp->result = DID_RESET << 16; - } else { - qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT); - add_to_retry_queue(ha, sp); - return; - } + cp->result = DID_RESET << 16; break; case CS_ABORTED: @@ -1253,7 +1180,7 @@ qla2x00_status_entry(scsi_qla_host_t *ha, sts_entry_t *pkt) /* Place command on done queue. */ if (ha->status_srb == NULL) - add_to_done_queue(ha, sp); + qla2x00_sp_compl(ha, sp); } /** @@ -1298,8 +1225,8 @@ qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt) /* Place command on done queue. */ if (sp->request_sense_length == 0) { - add_to_done_queue(ha, sp); ha->status_srb = NULL; + qla2x00_sp_compl(ha, sp); } } } @@ -1353,8 +1280,7 @@ qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt) } else { sp->cmd->result = DID_ERROR << 16; } - /* Place command on done queue. */ - add_to_done_queue(ha, sp); + qla2x00_sp_compl(ha, sp); } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type == COMMAND_TYPE) { @@ -1403,62 +1329,5 @@ qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt) /* Free outstanding command slot. */ ha->outstanding_cmds[pkt->handle1] = NULL; - add_to_done_queue(ha, sp); -} - -/** - * qla2x00_check_sense() - Perform any sense data interrogation. - * @cp: SCSI Command - * @lq: Lun queue - * - * Returns QLA_SUCCESS if the lun queue is suspended, else - * QLA_FUNCTION_FAILED (lun queue not suspended). - */ -static int -qla2x00_check_sense(struct scsi_cmnd *cp, os_lun_t *lq) -{ - scsi_qla_host_t *ha; - srb_t *sp; - fc_port_t *fcport; - - ha = (scsi_qla_host_t *) cp->device->host->hostdata; - if ((cp->sense_buffer[0] & 0x70) != 0x70) { - return (QLA_FUNCTION_FAILED); - } - - sp = (srb_t * )CMD_SP(cp); - sp->flags |= SRB_GOT_SENSE; - - switch (cp->sense_buffer[2] & 0xf) { - case RECOVERED_ERROR: - cp->result = DID_OK << 16; - cp->sense_buffer[0] = 0; - break; - - case NOT_READY: - fcport = lq->fclun->fcport; - - /* - * Suspend the lun only for hard disk device type. - */ - if ((fcport->flags & FCF_TAPE_PRESENT) == 0 && - lq->q_state != LUN_STATE_TIMEOUT) { - /* - * If target is in process of being ready then suspend - * lun for 6 secs and retry all the commands. - */ - if (cp->sense_buffer[12] == 0x4 && - cp->sense_buffer[13] == 0x1) { - - /* Suspend the lun for 6 secs */ - qla2x00_suspend_lun(ha, lq, 6, - ql2xsuspendcount); - - return (QLA_SUCCESS); - } - } - break; - } - - return (QLA_FUNCTION_FAILED); + qla2x00_sp_compl(ha, sp); } diff --git a/drivers/scsi/qla2xxx/qla_listops.h b/drivers/scsi/qla2xxx/qla_listops.h deleted file mode 100644 index 5da034f..0000000 --- a/drivers/scsi/qla2xxx/qla_listops.h +++ /dev/null @@ -1,351 +0,0 @@ -/****************************************************************************** - * QLOGIC LINUX SOFTWARE - * - * QLogic ISP2x00 device driver for Linux 2.6.x - * Copyright (C) 2003-2004 QLogic Corporation - * (www.qlogic.com) - * - * 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, 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. - * - ******************************************************************************/ - -/* Management functions for various lists */ - -/* __add_to_done_queue() - * - * Place SRB command on done queue. - * - * Input: - * ha = host pointer - * sp = srb pointer. - * Locking: - * this function assumes the ha->list_lock is already taken - */ -static inline void -__add_to_done_queue(struct scsi_qla_host * ha, srb_t * sp) -{ - /* - if (sp->state != SRB_NO_QUEUE_STATE && - sp->state != SRB_ACTIVE_STATE) - BUG(); - */ - - /* Place block on done queue */ - sp->cmd->host_scribble = (unsigned char *) NULL; - sp->state = SRB_DONE_STATE; - list_add_tail(&sp->list,&ha->done_queue); - ha->done_q_cnt++; - sp->ha = ha; -} - -static inline void -__add_to_retry_queue(struct scsi_qla_host * ha, srb_t * sp) -{ - /* - if( sp->state != SRB_NO_QUEUE_STATE && - sp->state != SRB_ACTIVE_STATE) - BUG(); - */ - - /* Place block on retry queue */ - list_add_tail(&sp->list,&ha->retry_queue); - ha->retry_q_cnt++; - sp->flags |= SRB_WATCHDOG; - sp->state = SRB_RETRY_STATE; - sp->ha = ha; -} - -static inline void -__add_to_scsi_retry_queue(struct scsi_qla_host * ha, srb_t * sp) -{ - /* - if( sp->state != SRB_NO_QUEUE_STATE && - sp->state != SRB_ACTIVE_STATE) - BUG(); - */ - - /* Place block on retry queue */ - list_add_tail(&sp->list,&ha->scsi_retry_queue); - ha->scsi_retry_q_cnt++; - sp->state = SRB_SCSI_RETRY_STATE; - sp->ha = ha; -} - -static inline void -add_to_done_queue(struct scsi_qla_host * ha, srb_t * sp) -{ - unsigned long flags; - - spin_lock_irqsave(&ha->list_lock, flags); - __add_to_done_queue(ha,sp); - spin_unlock_irqrestore(&ha->list_lock, flags); -} - -static inline void -add_to_free_queue(struct scsi_qla_host * ha, srb_t * sp) -{ - mempool_free(sp, ha->srb_mempool); -} - -static inline void -add_to_retry_queue(struct scsi_qla_host * ha, srb_t * sp) -{ - unsigned long flags; - - spin_lock_irqsave(&ha->list_lock, flags); - __add_to_retry_queue(ha,sp); - spin_unlock_irqrestore(&ha->list_lock, flags); -} - -static inline void -add_to_scsi_retry_queue(struct scsi_qla_host * ha, srb_t * sp) -{ - unsigned long flags; - - spin_lock_irqsave(&ha->list_lock, flags); - __add_to_scsi_retry_queue(ha,sp); - spin_unlock_irqrestore(&ha->list_lock, flags); -} - -/* - * __del_from_retry_queue - * Function used to remove a command block from the - * watchdog timer queue. - * - * Note: Must insure that command is on watchdog - * list before calling del_from_retry_queue - * if (sp->flags & SRB_WATCHDOG) - * - * Input: - * ha = adapter block pointer. - * sp = srb pointer. - * Locking: - * this function assumes the list_lock is already taken - */ -static inline void -__del_from_retry_queue(struct scsi_qla_host * ha, srb_t * sp) -{ - list_del_init(&sp->list); - - sp->flags &= ~(SRB_WATCHDOG | SRB_BUSY); - sp->state = SRB_NO_QUEUE_STATE; - ha->retry_q_cnt--; -} - -/* - * __del_from_scsi_retry_queue - * Function used to remove a command block from the - * scsi retry queue. - * - * Input: - * ha = adapter block pointer. - * sp = srb pointer. - * Locking: - * this function assumes the list_lock is already taken - */ -static inline void -__del_from_scsi_retry_queue(struct scsi_qla_host * ha, srb_t * sp) -{ - list_del_init(&sp->list); - - ha->scsi_retry_q_cnt--; - sp->state = SRB_NO_QUEUE_STATE; -} - -/* - * del_from_retry_queue - * Function used to remove a command block from the - * watchdog timer queue. - * - * Note: Must insure that command is on watchdog - * list before calling del_from_retry_queue - * if (sp->flags & SRB_WATCHDOG) - * - * Input: - * ha = adapter block pointer. - * sp = srb pointer. - * Locking: - * this function takes and releases the list_lock - */ -static inline void -del_from_retry_queue(struct scsi_qla_host * ha, srb_t * sp) -{ - unsigned long flags; - - /* if (unlikely(!(sp->flags & SRB_WATCHDOG))) - BUG();*/ - spin_lock_irqsave(&ha->list_lock, flags); - - /* if (unlikely(list_empty(&ha->retry_queue))) - BUG();*/ - - __del_from_retry_queue(ha,sp); - - spin_unlock_irqrestore(&ha->list_lock, flags); -} -/* - * del_from_scsi_retry_queue - * Function used to remove a command block from the - * scsi retry queue. - * - * Input: - * ha = adapter block pointer. - * sp = srb pointer. - * Locking: - * this function takes and releases the list_lock - */ -static inline void -del_from_scsi_retry_queue(struct scsi_qla_host * ha, srb_t * sp) -{ - unsigned long flags; - - spin_lock_irqsave(&ha->list_lock, flags); - - /* if (unlikely(list_empty(&ha->scsi_retry_queue))) - BUG();*/ - - __del_from_scsi_retry_queue(ha,sp); - - spin_unlock_irqrestore(&ha->list_lock, flags); -} - -/* - * __add_to_pending_queue - * Add the standard SCB job to the bottom of standard SCB commands. - * - * Input: - * COMPLETE!!! - * q = SCSI LU pointer. - * sp = srb pointer. - * SCSI_LU_Q lock must be already obtained. - */ -static inline int -__add_to_pending_queue(struct scsi_qla_host *ha, srb_t * sp) -{ - int empty; - /* - if( sp->state != SRB_NO_QUEUE_STATE && - sp->state != SRB_FREE_STATE && - sp->state != SRB_ACTIVE_STATE) - BUG(); - */ - - empty = list_empty(&ha->pending_queue); - list_add_tail(&sp->list, &ha->pending_queue); - ha->qthreads++; - sp->state = SRB_PENDING_STATE; - - return (empty); -} - -static inline void -__add_to_pending_queue_head(struct scsi_qla_host *ha, srb_t * sp) -{ - /* - if( sp->state != SRB_NO_QUEUE_STATE && - sp->state != SRB_FREE_STATE && - sp->state != SRB_ACTIVE_STATE) - BUG(); - */ - - list_add(&sp->list, &ha->pending_queue); - ha->qthreads++; - sp->state = SRB_PENDING_STATE; -} - -static inline int -add_to_pending_queue(struct scsi_qla_host *ha, srb_t *sp) -{ - int empty; - unsigned long flags; - - spin_lock_irqsave(&ha->list_lock, flags); - empty = __add_to_pending_queue(ha, sp); - spin_unlock_irqrestore(&ha->list_lock, flags); - - return (empty); -} -static inline void -add_to_pending_queue_head(struct scsi_qla_host *ha, srb_t *sp) -{ - unsigned long flags; - - spin_lock_irqsave(&ha->list_lock, flags); - __add_to_pending_queue_head(ha, sp); - spin_unlock_irqrestore(&ha->list_lock, flags); -} - -static inline void -__del_from_pending_queue(struct scsi_qla_host *ha, srb_t *sp) -{ - list_del_init(&sp->list); - ha->qthreads--; - sp->state = SRB_NO_QUEUE_STATE; -} - -/* - * Failover Stuff. - */ -static inline void -__add_to_failover_queue(struct scsi_qla_host * ha, srb_t * sp) -{ - /* - if( sp->state != SRB_NO_QUEUE_STATE && - sp->state != SRB_ACTIVE_STATE) - BUG(); - */ - - list_add_tail(&sp->list,&ha->failover_queue); - ha->failover_cnt++; - sp->state = SRB_FAILOVER_STATE; - sp->ha = ha; -} - -static inline void add_to_failover_queue(struct scsi_qla_host * ha, srb_t * sp) -{ - unsigned long flags; - - spin_lock_irqsave(&ha->list_lock, flags); - - __add_to_failover_queue(ha,sp); - - spin_unlock_irqrestore(&ha->list_lock, flags); -} -static inline void __del_from_failover_queue(struct scsi_qla_host * ha, srb_t * - sp) -{ - ha->failover_cnt--; - list_del_init(&sp->list); - sp->state = SRB_NO_QUEUE_STATE; -} - -static inline void del_from_failover_queue(struct scsi_qla_host * ha, srb_t * sp) -{ - unsigned long flags; - - spin_lock_irqsave(&ha->list_lock, flags); - - __del_from_failover_queue(ha,sp); - - spin_unlock_irqrestore(&ha->list_lock, flags); -} - -static inline void -del_from_pending_queue(struct scsi_qla_host * ha, srb_t * sp) -{ - unsigned long flags; - - spin_lock_irqsave(&ha->list_lock, flags); - - __del_from_pending_queue(ha,sp); - - spin_unlock_irqrestore(&ha->list_lock, flags); -} diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index b5863d8..0e7e51d 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -151,6 +151,8 @@ static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha); * SCSI host template entry points */ static int qla2xxx_slave_configure(struct scsi_device * device); +static int qla2xxx_slave_alloc(struct scsi_device *); +static void qla2xxx_slave_destroy(struct scsi_device *); static int qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*fn)(struct scsi_cmnd *)); static int qla2xxx_eh_abort(struct scsi_cmnd *); @@ -177,6 +179,8 @@ static struct scsi_host_template qla2x00_driver_template = { .slave_configure = qla2xxx_slave_configure, + .slave_alloc = qla2xxx_slave_alloc, + .slave_destroy = qla2xxx_slave_destroy, .this_id = -1, .cmd_per_lun = 3, .use_clustering = ENABLE_CLUSTERING, @@ -230,168 +234,6 @@ qla2x00_stop_timer(scsi_qla_host_t *ha) ha->timer_active = 0; } -void qla2x00_cmd_timeout(srb_t *); - -static __inline__ void qla2x00_callback(scsi_qla_host_t *, struct scsi_cmnd *); -static __inline__ void sp_put(struct scsi_qla_host * ha, srb_t *sp); -static __inline__ void sp_get(struct scsi_qla_host * ha, srb_t *sp); -static __inline__ void -qla2x00_delete_from_done_queue(scsi_qla_host_t *, srb_t *); - -/* -* qla2x00_callback -* Returns the completed SCSI command to LINUX. -* -* Input: -* ha -- Host adapter structure -* cmd -- SCSI mid-level command structure. -* Returns: -* None -* Note:From failover point of view we always get the sp -* from vis_ha pool in queuecommand.So when we put it -* back to the pool it has to be the vis_ha. -* So rely on struct scsi_cmnd to get the vis_ha and not on sp. -*/ -static inline void -qla2x00_callback(scsi_qla_host_t *ha, struct scsi_cmnd *cmd) -{ - srb_t *sp = (srb_t *) CMD_SP(cmd); - scsi_qla_host_t *vis_ha; - os_lun_t *lq; - int got_sense; - unsigned long cpu_flags = 0; - - cmd->host_scribble = (unsigned char *) NULL; - vis_ha = (scsi_qla_host_t *) cmd->device->host->hostdata; - - if (sp == NULL) { - qla_printk(KERN_INFO, ha, - "%s(): **** CMD derives a NULL SP\n", - __func__); - DEBUG2(BUG();) - return; - } - - /* - * If command status is not DID_BUS_BUSY then go ahead and freed sp. - */ - /* - * Cancel command timeout - */ - qla2x00_delete_timer_from_cmd(sp); - - /* - * Put SP back in the free queue - */ - sp->cmd = NULL; - CMD_SP(cmd) = NULL; - lq = sp->lun_queue; - got_sense = (sp->flags & SRB_GOT_SENSE)? 1: 0; - add_to_free_queue(vis_ha, sp); - - if (host_byte(cmd->result) == DID_OK) { - /* device ok */ - ha->total_bytes += cmd->bufflen; - if (!got_sense) { - /* If lun was suspended then clear retry count */ - spin_lock_irqsave(&lq->q_lock, cpu_flags); - if (!test_bit(LUN_EXEC_DELAYED, &lq->q_flag)) - lq->q_state = LUN_STATE_READY; - spin_unlock_irqrestore(&lq->q_lock, cpu_flags); - } - } else if (host_byte(cmd->result) == DID_ERROR) { - /* device error */ - ha->total_dev_errs++; - } - - /* Call the mid-level driver interrupt handler */ - (*(cmd)->scsi_done)(cmd); -} - -/************************************************************************** -* sp_put -* -* Description: -* Decrement reference count and call the callback if we're the last -* owner of the specified sp. Will get the host_lock before calling -* the callback. -* -* Input: -* ha - pointer to the scsi_qla_host_t where the callback is to occur. -* sp - pointer to srb_t structure to use. -* -* Returns: -* -**************************************************************************/ -static inline void -sp_put(struct scsi_qla_host * ha, srb_t *sp) -{ - if (atomic_read(&sp->ref_count) == 0) { - qla_printk(KERN_INFO, ha, - "%s(): **** SP->ref_count not zero\n", - __func__); - DEBUG2(BUG();) - - return; - } - - if (!atomic_dec_and_test(&sp->ref_count)) { - return; - } - - qla2x00_callback(ha, sp->cmd); -} - -/************************************************************************** -* sp_get -* -* Description: -* Increment reference count of the specified sp. -* -* Input: -* sp - pointer to srb_t structure to use. -* -* Returns: -* -**************************************************************************/ -static inline void -sp_get(struct scsi_qla_host * ha, srb_t *sp) -{ - atomic_inc(&sp->ref_count); - - if (atomic_read(&sp->ref_count) > 2) { - qla_printk(KERN_INFO, ha, - "%s(): **** SP->ref_count greater than two\n", - __func__); - DEBUG2(BUG();) - - return; - } -} - -static inline void -qla2x00_delete_from_done_queue(scsi_qla_host_t *dest_ha, srb_t *sp) -{ - /* remove command from done list */ - list_del_init(&sp->list); - dest_ha->done_q_cnt--; - sp->state = SRB_NO_QUEUE_STATE; - - if (sp->flags & SRB_DMA_VALID) { - sp->flags &= ~SRB_DMA_VALID; - - /* Release memory used for this I/O */ - if (sp->cmd->use_sg) { - pci_unmap_sg(dest_ha->pdev, sp->cmd->request_buffer, - sp->cmd->use_sg, sp->cmd->sc_data_direction); - } else if (sp->cmd->request_bufflen) { - pci_unmap_page(dest_ha->pdev, sp->dma_handle, - sp->cmd->request_bufflen, - sp->cmd->sc_data_direction); - } - } -} - static int qla2x00_do_dpc(void *data); static void qla2x00_rst_aen(scsi_qla_host_t *); @@ -400,7 +242,9 @@ static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *); static void qla2x00_mem_free(scsi_qla_host_t *ha); static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha); static void qla2x00_free_sp_pool(scsi_qla_host_t *ha); -static srb_t *qla2x00_get_new_sp(scsi_qla_host_t *ha); +static srb_t *qla2x00_get_new_sp(scsi_qla_host_t *); +static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *); +void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *); static ssize_t qla2x00_sysfs_read_fw_dump(struct kobject *, char *, loff_t, size_t); @@ -661,210 +505,84 @@ qla2x00_get_fw_version_str(struct scsi_qla_host *ha, char *str) * handling). **************************************************************************/ static int -qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*fn)(struct scsi_cmnd *)) +qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) { - fc_port_t *fcport; - os_lun_t *lq; - os_tgt_t *tq; - scsi_qla_host_t *ha, *ha2; - srb_t *sp; - struct Scsi_Host *host; - unsigned int b, t, l; - unsigned long handle; - int was_empty; - + scsi_qla_host_t *ha = to_qla_host(cmd->device->host); + os_tgt_t *tq = (os_tgt_t *) cmd->device->hostdata; + fc_port_t *fcport = tq->fcport; + os_lun_t *lq; + srb_t *sp; + int rval; - host = cmd->device->host; - ha = (scsi_qla_host_t *) host->hostdata; - was_empty = 1; + lq = GET_LU_Q(ha, cmd->device->id, cmd->device->lun); + if (!fcport || !lq) { + cmd->result = DID_NO_CONNECT << 16; + goto qc_fail_command; + } - cmd->scsi_done = fn; + if (atomic_read(&fcport->state) != FCS_ONLINE) { + if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD || + atomic_read(&ha->loop_state) == LOOP_DEAD) { + cmd->result = DID_NO_CONNECT << 16; + goto qc_fail_command; + } + goto qc_host_busy; + } spin_unlock_irq(ha->host->host_lock); - /* - * Allocate a command packet from the "sp" pool. If we cant get back - * one then let scsi layer come back later. - */ + /* Allocate a command packet from the "sp" pool. */ if ((sp = qla2x00_get_new_sp(ha)) == NULL) { - qla_printk(KERN_WARNING, ha, - "Couldn't allocate memory for sp - retried.\n"); - - spin_lock_irq(ha->host->host_lock); - - return (1); + goto qc_host_busy_lock; } + sp->ha = ha; sp->cmd = cmd; - CMD_SP(cmd) = (void *)sp; - - sp->flags = 0; - if (CMD_RESID_LEN(cmd) & SRB_IOCTL) { - /* Need to set sp->flags */ - sp->flags |= SRB_IOCTL; - CMD_RESID_LEN(cmd) = 0; /* Clear it since no more use. */ - } - - sp->fo_retry_cnt = 0; - sp->err_id = 0; - - /* Generate LU queue on bus, target, LUN */ - b = cmd->device->channel; - t = cmd->device->id; - l = cmd->device->lun; - - /* - * Start Command Timer. Typically it will be 2 seconds less than what - * is requested by the Host such that we can return the IO before - * aborts are called. - */ - if ((cmd->timeout_per_command / HZ) > QLA_CMD_TIMER_DELTA) - qla2x00_add_timer_to_cmd(sp, - (cmd->timeout_per_command / HZ) - QLA_CMD_TIMER_DELTA); - else - qla2x00_add_timer_to_cmd(sp, cmd->timeout_per_command / HZ); - - if (l >= ha->max_luns) { - cmd->result = DID_NO_CONNECT << 16; - sp->err_id = SRB_ERR_PORT; - - spin_lock_irq(ha->host->host_lock); - - sp_put(ha, sp); - - return (0); - } - - if ((tq = (os_tgt_t *) TGT_Q(ha, t)) != NULL && - (lq = (os_lun_t *) LUN_Q(ha, t, l)) != NULL) { - fcport = lq->fclun->fcport; - ha2 = fcport->ha; - } else { - lq = NULL; - fcport = NULL; - ha2 = ha; - } - - /* Set an invalid handle until we issue the command to ISP */ - /* then we will set the real handle value. */ - handle = INVALID_HANDLE; - cmd->host_scribble = (unsigned char *)handle; - - /* Bookkeeping information */ - sp->r_start = jiffies; /* Time the request was recieved. */ - sp->u_start = 0; - - /* Setup device queue pointers. */ sp->tgt_queue = tq; - sp->lun_queue = lq; - - /* - * NOTE : q is NULL - * - * 1. When device is added from persistent binding but has not been - * discovered yet.The state of loopid == PORT_AVAIL. - * 2. When device is never found on the bus.(loopid == UNUSED) - * - * IF Device Queue is not created, or device is not in a valid state - * and link down error reporting is enabled, reject IO. - */ - if (fcport == NULL) { - DEBUG3(printk("scsi(%ld:%2d:%2d): port unavailable\n", - ha->host_no,t,l)); - cmd->result = DID_NO_CONNECT << 16; - sp->err_id = SRB_ERR_PORT; - - spin_lock_irq(ha->host->host_lock); - - sp_put(ha, sp); - - return (0); - } + sp->lun_queue = lq; + lq->io_cnt++; + sp->fclun = lq->fclun; - /* Only modify the allowed count if the target is a *non* tape device */ - if ((fcport->flags & FCF_TAPE_PRESENT) == 0) { - sp->flags &= ~SRB_TAPE; - if (cmd->allowed < ql2xretrycount) { - cmd->allowed = ql2xretrycount; - } - } else - sp->flags |= SRB_TAPE; + sp->flags = 0; + sp->err_id = 0; - DEBUG5(printk("scsi(%ld:%2d:%2d): (queuecmd) queue sp = %p, " - "flags=0x%x fo retry=%d, pid=%ld\n", - ha->host_no, t, l, sp, sp->flags, sp->fo_retry_cnt, - cmd->serial_number)); - DEBUG5(qla2x00_print_scsi_cmd(cmd)); + CMD_SP(cmd) = (void *)sp; + cmd->scsi_done = done; - sp->fclun = lq->fclun; - sp->ha = ha2; + rval = qla2x00_start_scsi(sp); + if (rval != QLA_SUCCESS) + goto qc_host_busy_free_sp; - if (cmd->sc_data_direction == DMA_BIDIRECTIONAL && - cmd->request_bufflen != 0) { + /* Manage unprocessed RIO/ZIO commands in response queue. */ + if (ha->flags.online && ha->flags.process_response_queue && + ha->response_ring_ptr->signature != RESPONSE_PROCESSED) { + unsigned long flags; - DEBUG2(printk(KERN_WARNING - "scsi(%ld): Incorrect data direction - transfer " - "length=%d, direction=%d, pid=%ld, opcode=%x\n", - ha->host_no, cmd->request_bufflen, cmd->sc_data_direction, - cmd->serial_number, cmd->cmnd[0])); + spin_lock_irqsave(&ha->hardware_lock, flags); + qla2x00_process_response_queue(ha); + spin_unlock_irqrestore(&ha->hardware_lock, flags); } - /* Final pre-check : - * - * Either PORT_DOWN_TIMER OR LINK_DOWN_TIMER Expired. - */ - if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD || - atomic_read(&ha2->loop_state) == LOOP_DEAD) { - /* - * Add the command to the done-queue for later failover - * processing. - */ - cmd->result = DID_NO_CONNECT << 16; - if (atomic_read(&ha2->loop_state) == LOOP_DOWN) - sp->err_id = SRB_ERR_LOOP; - else - sp->err_id = SRB_ERR_PORT; + spin_lock_irq(ha->host->host_lock); - add_to_done_queue(ha, sp); - qla2x00_done(ha); + return 0; - spin_lock_irq(ha->host->host_lock); - return (0); - } +qc_host_busy_free_sp: + qla2x00_sp_free_dma(ha, sp); + CMD_SP(cmd) = NULL; + mempool_free(sp, ha->srb_mempool); - if (tq && test_bit(TQF_SUSPENDED, &tq->flags) && - (sp->flags & SRB_TAPE) == 0) { - /* If target suspended put incoming I/O in retry_q. */ - qla2x00_extend_timeout(sp->cmd, 10); - add_to_scsi_retry_queue(ha, sp); - } else - was_empty = add_to_pending_queue(ha, sp); - - if ((IS_QLA2100(ha) || IS_QLA2200(ha)) && ha->flags.online) { - if (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) { - unsigned long flags; - - spin_lock_irqsave(&ha->hardware_lock, flags); - qla2x00_process_response_queue(ha); - spin_unlock_irqrestore(&ha->hardware_lock, flags); - } - } +qc_host_busy_lock: + spin_lock_irq(ha->host->host_lock); - /* We submit to the hardware if: - * - * 1) we're on the cpu the irq's arrive on or - * 2) there are very few io's outstanding. - * - * In all other cases we'll let an irq pick up our IO and submit it - * to the controller to improve affinity. - */ - if (_smp_processor_id() == ha->last_irq_cpu || was_empty) - qla2x00_next(ha); +qc_host_busy: + return SCSI_MLQUEUE_HOST_BUSY; - spin_lock_irq(ha->host->host_lock); +qc_fail_command: + done(cmd); - return (0); + return 0; } /* @@ -886,54 +604,21 @@ static int qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd) { #define ABORT_POLLING_PERIOD HZ -#define ABORT_WAIT_TIME ((10 * HZ) / (ABORT_POLLING_PERIOD)) - - int found = 0; - int done = 0; - srb_t *rp = NULL; - struct list_head *list, *temp; - u_long max_wait_time = ABORT_WAIT_TIME; - - do { - /* Check on done queue */ - spin_lock(&ha->list_lock); - list_for_each_safe(list, temp, &ha->done_queue) { - rp = list_entry(list, srb_t, list); - - /* - * Found command. Just exit and wait for the cmd sent - * to OS. - */ - if (cmd == rp->cmd) { - found++; - DEBUG3(printk("%s: found in done queue.\n", - __func__);) - break; - } - } - spin_unlock(&ha->list_lock); - - /* Complete the cmd right away. */ - if (found) { - qla2x00_delete_from_done_queue(ha, rp); - sp_put(ha, rp); - done++; - break; - } - - spin_unlock_irq(ha->host->host_lock); +#define ABORT_WAIT_ITER ((10 * HZ) / (ABORT_POLLING_PERIOD)) + unsigned long wait_iter = ABORT_WAIT_ITER; + int ret = QLA_SUCCESS; + while (CMD_SP(cmd)) { set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout(ABORT_POLLING_PERIOD); - spin_lock_irq(ha->host->host_lock); - - } while ((max_wait_time--)); - - if (done) - DEBUG2(printk(KERN_INFO "%s: found cmd=%p.\n", __func__, cmd)); + if (--wait_iter) + break; + } + if (CMD_SP(cmd)) + ret = QLA_FUNCTION_FAILED; - return (done); + return ret; } /* @@ -1032,245 +717,69 @@ qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha) int qla2xxx_eh_abort(struct scsi_cmnd *cmd) { - int i; - int return_status = FAILED; - os_lun_t *q; - scsi_qla_host_t *ha; - scsi_qla_host_t *vis_ha; - srb_t *sp; - srb_t *rp; - struct list_head *list, *temp; - struct Scsi_Host *host; - uint8_t found = 0; - unsigned int b, t, l; - - /* Get the SCSI request ptr */ - sp = (srb_t *) CMD_SP(cmd); - - /* - * If sp is NULL, command is already returned. - * sp is NULLED just before we call back scsi_done - * - */ - if ((sp == NULL)) { - /* no action - we don't have command */ - qla_printk(KERN_INFO, to_qla_host(cmd->device->host), - "qla2xxx_eh_abort: cmd already done sp=%p\n", sp); - DEBUG(printk("qla2xxx_eh_abort: cmd already done sp=%p\n", sp);) - return SUCCESS; - } - if (sp) { - DEBUG(printk("qla2xxx_eh_abort: refcount %i \n", - atomic_read(&sp->ref_count));) - } - - vis_ha = (scsi_qla_host_t *) cmd->device->host->hostdata; - ha = (scsi_qla_host_t *)cmd->device->host->hostdata; - - host = ha->host; - - /* Generate LU queue on bus, target, LUN */ - b = cmd->device->channel; - t = cmd->device->id; - l = cmd->device->lun; - q = GET_LU_Q(vis_ha, t, l); - - qla_printk(KERN_INFO, ha, - "%s scsi(%ld:%d:%d:%d): cmd_timeout_in_sec=0x%x.\n", __func__, - ha->host_no, (int)b, (int)t, (int)l, - cmd->timeout_per_command / HZ); - - /* - * if no LUN queue then something is very wrong!!! - */ - if (q == NULL) { - qla_printk(KERN_WARNING, ha, - "qla2x00: (%x:%x:%x) No LUN queue.\n", b, t, l); + scsi_qla_host_t *ha = to_qla_host(cmd->device->host); + srb_t *sp; + int ret, i; + unsigned int id, lun; + unsigned long serial; - /* no action - we don't have command */ + if (!CMD_SP(cmd)) return FAILED; - } - DEBUG2(printk("scsi(%ld): ABORTing cmd=%p sp=%p jiffies = 0x%lx, " - "timeout=%x, dpc_flags=%lx, vis_ha->dpc_flags=%lx q->flag=%lx\n", - ha->host_no, cmd, sp, jiffies, cmd->timeout_per_command / HZ, - ha->dpc_flags, vis_ha->dpc_flags, q->q_flag)); - DEBUG2(qla2x00_print_scsi_cmd(cmd)); + ret = FAILED; - spin_unlock_irq(ha->host->host_lock); - if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) { - DEBUG2(printk("%s failed:board disabled\n", __func__);) - spin_lock_irq(ha->host->host_lock); - return FAILED; - } - spin_lock_irq(ha->host->host_lock); + id = cmd->device->id; + lun = cmd->device->lun; + serial = cmd->serial_number; - /* Search done queue */ - spin_lock(&ha->list_lock); - list_for_each_safe(list, temp, &ha->done_queue) { - rp = list_entry(list, srb_t, list); + /* Check active list for command command. */ + spin_unlock_irq(ha->host->host_lock); + spin_lock(&ha->hardware_lock); + for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) { + sp = ha->outstanding_cmds[i]; - if (cmd != rp->cmd) + if (sp == NULL) continue; - /* - * Found command.Remove it from done list. - * And proceed to post completion to scsi mid layer. - */ - return_status = SUCCESS; - found++; - qla2x00_delete_from_done_queue(ha, sp); - - break; - } /* list_for_each_safe() */ - spin_unlock(&ha->list_lock); - - /* - * Return immediately if the aborted command was already in the done - * queue - */ - if (found) { - qla_printk(KERN_INFO, ha, - "qla2xxx_eh_abort: Returning completed command=%p sp=%p\n", - cmd, sp); - sp_put(ha, sp); - return (return_status); - } - - - /* - * See if this command is in the retry queue - */ - DEBUG3(printk("qla2xxx_eh_abort: searching sp %p in retry " - "queue.\n", sp);) - - spin_lock(&ha->list_lock); - list_for_each_safe(list, temp, &ha->retry_queue) { - rp = list_entry(list, srb_t, list); - - if (cmd != rp->cmd) + if (sp->cmd != cmd) continue; + DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld " + "sp->state=%x\n", __func__, ha->host_no, sp, serial, + sp->state)); + DEBUG3(qla2x00_print_scsi_cmd(cmd);) - DEBUG2(printk("qla2xxx_eh_abort: found " - "in retry queue. SP=%p\n", sp);) - - __del_from_retry_queue(ha, rp); - cmd->result = DID_ABORT << 16; - __add_to_done_queue(ha, rp); - - return_status = SUCCESS; - found++; - - break; - - } - spin_unlock(&ha->list_lock); - - - /* - * Our SP pointer points at the command we want to remove from the - * pending queue providing we haven't already sent it to the adapter. - */ - if (!found) { - DEBUG3(printk("qla2xxx_eh_abort: searching sp %p " - "in pending queue.\n", sp);) - - spin_lock(&vis_ha->list_lock); - list_for_each_safe(list, temp, &vis_ha->pending_queue) { - rp = list_entry(list, srb_t, list); - - if (rp->cmd != cmd) - continue; - - /* Remove srb from LUN queue. */ - rp->flags |= SRB_ABORTED; - - DEBUG2(printk("qla2xxx_eh_abort: Cmd in pending queue." - " serial_number %ld.\n", - sp->cmd->serial_number);) - - __del_from_pending_queue(vis_ha, rp); - cmd->result = DID_ABORT << 16; - - __add_to_done_queue(vis_ha, rp); - - return_status = SUCCESS; - - found++; - break; - } /* list_for_each_safe() */ - spin_unlock(&vis_ha->list_lock); - } /*End of if !found */ - - if (!found) { /* find the command in our active list */ - DEBUG3(printk("qla2xxx_eh_abort: searching sp %p " - "in outstanding queue.\n", sp);) - - spin_lock(&ha->hardware_lock); - for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) { - sp = ha->outstanding_cmds[i]; - - if (sp == NULL) - continue; - - if (sp->cmd != cmd) - continue; - - DEBUG2(printk("qla2xxx_eh_abort(%ld): aborting sp %p " - "from RISC. pid=%ld sp->state=%x q->q_flag=%lx\n", - ha->host_no, sp, sp->cmd->serial_number, - sp->state, q->q_flag);) - DEBUG(qla2x00_print_scsi_cmd(cmd);) - - /* Get a reference to the sp and drop the lock.*/ - sp_get(ha, sp); - - spin_unlock(&ha->hardware_lock); - spin_unlock_irq(ha->host->host_lock); - - if (qla2x00_abort_command(ha, sp)) { - DEBUG2(printk("qla2xxx_eh_abort: abort_command " - "mbx failed.\n");) - return_status = FAILED; - } else { - DEBUG3(printk("qla2xxx_eh_abort: abort_command " - " mbx success.\n");) - return_status = SUCCESS; - } - - sp_put(ha,sp); - - spin_lock_irq(ha->host->host_lock); - spin_lock(&ha->hardware_lock); - - /* - * Regardless of mailbox command status, go check on - * done queue just in case the sp is already done. - */ - break; - - }/*End of for loop */ spin_unlock(&ha->hardware_lock); + if (qla2x00_abort_command(ha, sp)) { + DEBUG2(printk("%s(%ld): abort_command " + "mbx failed.\n", __func__, ha->host_no)); + } else { + DEBUG3(printk("%s(%ld): abort_command " + "mbx success.\n", __func__, ha->host_no)); + ret = SUCCESS; + } + spin_lock(&ha->hardware_lock); - } /*End of if !found */ - - /* Waiting for our command in done_queue to be returned to OS.*/ - if (qla2x00_eh_wait_on_command(ha, cmd) != 0) { - DEBUG2(printk("qla2xxx_eh_abort: cmd returned back to OS.\n");) - return_status = SUCCESS; + break; } - if (return_status == FAILED) { - qla_printk(KERN_INFO, ha, - "qla2xxx_eh_abort Exiting: status=Failed\n"); - return FAILED; + /* Wait for the command to be returned. */ + if (ret == SUCCESS) { + spin_unlock(&ha->hardware_lock); + if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) { + qla_printk(KERN_ERR, ha, + "scsi(%ld:%d:%d): Abort handler timed out -- %lx " + "%x.\n", ha->host_no, id, lun, serial, ret); + } + spin_lock(&ha->hardware_lock); } + spin_lock_irq(ha->host->host_lock); - DEBUG2(printk("qla2xxx_eh_abort: Exiting. return_status=0x%x.\n", - return_status)); + qla_printk(KERN_INFO, ha, + "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no, + id, lun, serial, ret); - return return_status; + return ret; } /************************************************************************** @@ -1313,8 +822,7 @@ qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t) break; } } - } - else { + } else { spin_unlock(&ha->hardware_lock); } } @@ -1344,96 +852,45 @@ qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t) int qla2xxx_eh_device_reset(struct scsi_cmnd *cmd) { - int return_status; - unsigned int b, t, l; - scsi_qla_host_t *ha; - os_tgt_t *tq; - os_lun_t *lq; - fc_port_t *fcport_to_reset; - srb_t *rp; - struct list_head *list, *temp; - - return_status = FAILED; - if (cmd == NULL) { - printk(KERN_INFO - "%s(): **** SCSI mid-layer passing in NULL cmd\n", - __func__); - - return (return_status); - } - - b = cmd->device->channel; - t = cmd->device->id; - l = cmd->device->lun; - ha = (scsi_qla_host_t *)cmd->device->host->hostdata; - - tq = TGT_Q(ha, t); - if (tq == NULL) { - qla_printk(KERN_INFO, ha, - "%s(): **** CMD derives a NULL TGT_Q\n", __func__); + scsi_qla_host_t *ha = to_qla_host(cmd->device->host); + os_tgt_t *tq = (os_tgt_t *) cmd->device->hostdata; + fc_port_t *fcport = tq->fcport; + os_lun_t *lq; + srb_t *sp; + int ret; + unsigned int id, lun; + unsigned long serial; - return (return_status); - } - lq = (os_lun_t *)LUN_Q(ha, t, l); - if (lq == NULL) { - printk(KERN_INFO - "%s(): **** CMD derives a NULL LUN_Q\n", __func__); + ret = FAILED; - return (return_status); - } - fcport_to_reset = lq->fclun->fcport; + id = cmd->device->id; + lun = cmd->device->lun; + serial = cmd->serial_number; - /* If we are coming in from the back-door, stall I/O until complete. */ - if (!cmd->device->host->eh_active) - set_bit(TQF_SUSPENDED, &tq->flags); + sp = (srb_t *) CMD_SP(cmd); + lq = GET_LU_Q(ha, id, lun); + if (!sp || !fcport || !lq) + return ret; qla_printk(KERN_INFO, ha, - "scsi(%ld:%d:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, b, t, l); - - DEBUG2(printk(KERN_INFO - "scsi(%ld): DEVICE_RESET cmd=%p jiffies = 0x%lx, timeout=%x, " - "dpc_flags=%lx, status=%x allowed=%d cmd.state=%x\n", - ha->host_no, cmd, jiffies, cmd->timeout_per_command / HZ, - ha->dpc_flags, cmd->result, cmd->allowed, cmd->state)); - - /* Clear commands from the retry queue. */ - spin_lock(&ha->list_lock); - list_for_each_safe(list, temp, &ha->retry_queue) { - rp = list_entry(list, srb_t, list); - - if (t != rp->cmd->device->id) - continue; - - DEBUG2(printk(KERN_INFO - "qla2xxx_eh_reset: found in retry queue. SP=%p\n", rp)); - - __del_from_retry_queue(ha, rp); - rp->cmd->result = DID_RESET << 16; - __add_to_done_queue(ha, rp); - } - spin_unlock(&ha->list_lock); + "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun); spin_unlock_irq(ha->host->host_lock); if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) { - DEBUG2(printk(KERN_INFO - "%s failed:board disabled\n",__func__)); - spin_lock_irq(ha->host->host_lock); goto eh_dev_reset_done; } if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) { - if (qla2x00_device_reset(ha, fcport_to_reset) == 0) { - return_status = SUCCESS; - } + if (qla2x00_device_reset(ha, fcport) == 0) + ret = SUCCESS; #if defined(LOGOUT_AFTER_DEVICE_RESET) - if (return_status == SUCCESS) { - if (fcport_to_reset->flags & FC_FABRIC_DEVICE) { - qla2x00_fabric_logout(ha, - fcport_to_reset->loop_id); - qla2x00_mark_device_lost(ha, fcport_to_reset); + if (ret == SUCCESS) { + if (fcport->flags & FC_FABRIC_DEVICE) { + qla2x00_fabric_logout(ha, fcport->loop_id); + qla2x00_mark_device_lost(ha, fcport); } } #endif @@ -1442,9 +899,7 @@ qla2xxx_eh_device_reset(struct scsi_cmnd *cmd) "%s failed: loop not ready\n",__func__);) } - spin_lock_irq(ha->host->host_lock); - - if (return_status == FAILED) { + if (ret == FAILED) { DEBUG3(printk("%s(%ld): device reset failed\n", __func__, ha->host_no)); qla_printk(KERN_INFO, ha, "%s: device reset failed\n", @@ -1458,10 +913,10 @@ qla2xxx_eh_device_reset(struct scsi_cmnd *cmd) * complete for the device. */ if (cmd->device->host->eh_active) { - if (qla2x00_eh_wait_for_pending_target_commands(ha, t)) - return_status = FAILED; + if (qla2x00_eh_wait_for_pending_target_commands(ha, id)) + ret = FAILED; - if (return_status == FAILED) { + if (ret == FAILED) { DEBUG3(printk("%s(%ld): failed while waiting for " "commands\n", __func__, ha->host_no)); qla_printk(KERN_INFO, ha, @@ -1473,15 +928,12 @@ qla2xxx_eh_device_reset(struct scsi_cmnd *cmd) } qla_printk(KERN_INFO, ha, - "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", - ha->host_no, b, t, l); + "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no, id, lun); eh_dev_reset_done: + spin_lock_irq(ha->host->host_lock); - if (!cmd->device->host->eh_active) - clear_bit(TQF_SUSPENDED, &tq->flags); - - return (return_status); + return ret; } /************************************************************************** @@ -1549,44 +1001,55 @@ qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha) int qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd) { - scsi_qla_host_t *ha; + scsi_qla_host_t *ha = to_qla_host(cmd->device->host); + os_tgt_t *tq = (os_tgt_t *) cmd->device->hostdata; + fc_port_t *fcport = tq->fcport; + os_lun_t *lq; srb_t *sp; - int rval = FAILED; + int ret; + unsigned int id, lun; + unsigned long serial; + + ret = FAILED; + + id = cmd->device->id; + lun = cmd->device->lun; + serial = cmd->serial_number; - ha = (scsi_qla_host_t *) cmd->device->host->hostdata; sp = (srb_t *) CMD_SP(cmd); + lq = GET_LU_Q(ha, id, lun); + if (!sp || !fcport || !lq) + return ret; qla_printk(KERN_INFO, ha, - "scsi(%ld:%d:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, - cmd->device->channel, cmd->device->id, cmd->device->lun); + "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun); spin_unlock_irq(ha->host->host_lock); if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) { DEBUG2(printk("%s failed:board disabled\n",__func__)); - spin_lock_irq(ha->host->host_lock); - return FAILED; + goto eh_bus_reset_done; } if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) { - if (qla2x00_loop_reset(ha) == QLA_SUCCESS) - rval = SUCCESS; + if (qla2x00_loop_reset(ha) == QLA_SUCCESS) + ret = SUCCESS; } - - spin_lock_irq(ha->host->host_lock); - if (rval == FAILED) - goto out; + if (ret == FAILED) + goto eh_bus_reset_done; /* Waiting for our command in done_queue to be returned to OS.*/ if (cmd->device->host->eh_active) if (!qla2x00_eh_wait_for_pending_commands(ha)) - rval = FAILED; + ret = FAILED; - out: +eh_bus_reset_done: qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__, - (rval == FAILED) ? "failed" : "succeded"); + (ret == FAILED) ? "failed" : "succeded"); - return rval; + spin_lock_irq(ha->host->host_lock); + + return ret; } /************************************************************************** @@ -1607,24 +1070,33 @@ qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd) int qla2xxx_eh_host_reset(struct scsi_cmnd *cmd) { - scsi_qla_host_t *ha = (scsi_qla_host_t *)cmd->device->host->hostdata; - int rval = SUCCESS; + scsi_qla_host_t *ha = to_qla_host(cmd->device->host); + os_tgt_t *tq = (os_tgt_t *) cmd->device->hostdata; + fc_port_t *fcport = tq->fcport; + os_lun_t *lq; + srb_t *sp; + int ret; + unsigned int id, lun; + unsigned long serial; - /* Display which one we're actually resetting for debug. */ - DEBUG(printk("qla2xxx_eh_host_reset:Resetting scsi(%ld).\n", - ha->host_no)); + ret = FAILED; + + id = cmd->device->id; + lun = cmd->device->lun; + serial = cmd->serial_number; + + sp = (srb_t *) CMD_SP(cmd); + lq = GET_LU_Q(ha, id, lun); + if (!sp || !fcport || !lq) + return ret; - /* - * Now issue reset. - */ qla_printk(KERN_INFO, ha, - "scsi(%ld:%d:%d:%d): ADAPTER RESET issued.\n", ha->host_no, - cmd->device->channel, cmd->device->id, cmd->device->lun); + "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun); spin_unlock_irq(ha->host->host_lock); if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) - goto board_disabled; + goto eh_host_reset_lock; /* * Fixme-may be dpc thread is active and processing @@ -1634,7 +1106,6 @@ qla2xxx_eh_host_reset(struct scsi_cmnd *cmd) * devices as lost kicking of the port_down_timer * while dpc is stuck for the mailbox to complete. */ - /* Blocking call-Does context switching if loop is Not Ready */ qla2x00_wait_for_loop_ready(ha); set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags); if (qla2x00_abort_isp(ha)) { @@ -1643,32 +1114,22 @@ qla2xxx_eh_host_reset(struct scsi_cmnd *cmd) set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags); if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) - goto board_disabled; + goto eh_host_reset_lock; } - clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags); - spin_lock_irq(ha->host->host_lock); - if (rval == FAILED) - goto out; - /* Waiting for our command in done_queue to be returned to OS.*/ - if (!qla2x00_eh_wait_for_pending_commands(ha)) - rval = FAILED; - - out: - qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__, - (rval == FAILED) ? "failed" : "succeded"); - - return rval; + if (qla2x00_eh_wait_for_pending_commands(ha)) + ret = SUCCESS; - board_disabled: +eh_host_reset_lock: spin_lock_irq(ha->host->host_lock); - qla_printk(KERN_INFO, ha, "%s: failed:board disabled\n", __func__); - return FAILED; -} + qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__, + (ret == FAILED) ? "failed" : "succeded"); + return ret; +} /* * qla2x00_loop_reset @@ -1752,41 +1213,38 @@ qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport) return qla2x00_abort_target(reset_fcport); } -/************************************************************************** -* qla2xxx_slave_configure -* -* Description: -**************************************************************************/ -int -qla2xxx_slave_configure(struct scsi_device *sdev) +static int +qla2xxx_slave_alloc(struct scsi_device *sdev) { scsi_qla_host_t *ha = to_qla_host(sdev->host); - int queue_depth; + os_tgt_t *tq; - if (IS_QLA2100(ha) || IS_QLA2200(ha)) - queue_depth = 16; - else - queue_depth = 32; + tq = (os_tgt_t *) TGT_Q(ha, sdev->id); + if (!tq) + return -ENXIO; + if (!tq->fcport) + return -ENXIO; - if (sdev->tagged_supported) { - if (ql2xmaxqdepth != 0 && ql2xmaxqdepth <= 0xffffU) - queue_depth = ql2xmaxqdepth; + sdev->hostdata = tq; - ql2xmaxqdepth = queue_depth; + return 0; +} - scsi_activate_tcq(sdev, queue_depth); +static int +qla2xxx_slave_configure(struct scsi_device *sdev) +{ + if (sdev->tagged_supported) + scsi_activate_tcq(sdev, 32); + else + scsi_deactivate_tcq(sdev, 32); - qla_printk(KERN_INFO, ha, - "scsi(%d:%d:%d:%d): Enabled tagged queuing, queue " - "depth %d.\n", - sdev->host->host_no, sdev->channel, sdev->id, sdev->lun, - sdev->queue_depth); - } else { - scsi_adjust_queue_depth(sdev, 0 /* TCQ off */, - sdev->host->hostt->cmd_per_lun /* 3 */); - } + return 0; +} - return (0); +static void +qla2xxx_slave_destroy(struct scsi_device *sdev) +{ + sdev->hostdata = NULL; } /** @@ -1993,10 +1451,6 @@ int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info) INIT_LIST_HEAD(&ha->list); INIT_LIST_HEAD(&ha->fcports); INIT_LIST_HEAD(&ha->rscn_fcports); - INIT_LIST_HEAD(&ha->done_queue); - INIT_LIST_HEAD(&ha->retry_queue); - INIT_LIST_HEAD(&ha->scsi_retry_queue); - INIT_LIST_HEAD(&ha->pending_queue); /* * These locks are used to prevent more than one CPU @@ -2005,7 +1459,6 @@ int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info) * contention for these locks. */ spin_lock_init(&ha->mbx_reg_lock); - spin_lock_init(&ha->list_lock); ha->dpc_pid = -1; init_completion(&ha->dpc_inited); @@ -2381,13 +1834,6 @@ qla2x00_proc_info(struct Scsi_Host *shost, char *buffer, "Number of retries for empty slots = %ld\n", qla2x00_stats.outarray_full); - copy_info(&info, - "Number of reqs in pending_q= %ld, retry_q= %d, " - "done_q= %ld, scsi_retry_q= %d\n", - ha->qthreads, ha->retry_q_cnt, - ha->done_q_cnt, ha->scsi_retry_q_cnt); - - flags = (uint32_t *) &ha->flags; if (atomic_read(&ha->loop_state) == LOOP_DOWN) { @@ -2631,93 +2077,6 @@ qla2x00_display_fc_names(scsi_qla_host_t *ha) } } -/* - * qla2x00_suspend_lun - * Suspend lun and start port down timer - * - * Input: - * ha = visable adapter block pointer. - * lq = lun queue - * cp = Scsi command pointer - * time = time in seconds - * count = number of times to let time expire - * delay_lun = non-zero, if lun should be delayed rather than suspended - * - * Return: - * QLA_SUCCESS -- suspended lun - * QLA_FUNCTION_FAILED -- Didn't suspend lun - * - * Context: - * Interrupt context. - */ -int -__qla2x00_suspend_lun(scsi_qla_host_t *ha, - os_lun_t *lq, int time, int count, int delay_lun) -{ - int rval; - srb_t *sp; - struct list_head *list, *temp; - unsigned long flags; - - rval = QLA_SUCCESS; - - /* if the lun_q is already suspended then don't do it again */ - if (lq->q_state == LUN_STATE_READY ||lq->q_state == LUN_STATE_RUN) { - - spin_lock_irqsave(&lq->q_lock, flags); - if (lq->q_state == LUN_STATE_READY) { - lq->q_max = count; - lq->q_count = 0; - } - /* Set the suspend time usually 6 secs */ - atomic_set(&lq->q_timer, time); - - /* now suspend the lun */ - lq->q_state = LUN_STATE_WAIT; - - if (delay_lun) { - set_bit(LUN_EXEC_DELAYED, &lq->q_flag); - DEBUG(printk(KERN_INFO - "scsi(%ld): Delay lun execution for %d secs, " - "count=%d, max count=%d, state=%d\n", - ha->host_no, - time, - lq->q_count, lq->q_max, lq->q_state)); - } else { - DEBUG(printk(KERN_INFO - "scsi(%ld): Suspend lun for %d secs, count=%d, " - "max count=%d, state=%d\n", - ha->host_no, - time, - lq->q_count, lq->q_max, lq->q_state)); - } - spin_unlock_irqrestore(&lq->q_lock, flags); - - /* - * Remove all pending commands from request queue and put them - * in the scsi_retry queue. - */ - spin_lock_irqsave(&ha->list_lock, flags); - list_for_each_safe(list, temp, &ha->pending_queue) { - sp = list_entry(list, srb_t, list); - if (sp->lun_queue != lq) - continue; - - __del_from_pending_queue(ha, sp); - - if (sp->cmd->allowed < count) - sp->cmd->allowed = count; - __add_to_scsi_retry_queue(ha, sp); - - } /* list_for_each_safe */ - spin_unlock_irqrestore(&ha->list_lock, flags); - rval = QLA_SUCCESS; - } else { - rval = QLA_FUNCTION_FAILED; - } - - return (rval); -} /* * qla2x00_mark_device_lost Updates fcport state when device goes offline. @@ -3188,16 +2547,8 @@ qla2x00_do_dpc(void *data) DECLARE_MUTEX_LOCKED(sem); scsi_qla_host_t *ha; fc_port_t *fcport; - os_lun_t *q; - srb_t *sp; uint8_t status; - unsigned long flags = 0; - struct list_head *list, *templist; - int dead_cnt, online_cnt; - int retry_cmds = 0; uint16_t next_loopid; - int t; - os_tgt_t *tq; ha = (scsi_qla_host_t *)data; @@ -3233,139 +2584,7 @@ qla2x00_do_dpc(void *data) ha->dpc_active = 1; - if (!list_empty(&ha->done_queue)) - qla2x00_done(ha); - - /* Process commands in retry queue */ - if (test_and_clear_bit(PORT_RESTART_NEEDED, &ha->dpc_flags)) { - DEBUG(printk("scsi(%ld): DPC checking retry_q. " - "total=%d\n", - ha->host_no, ha->retry_q_cnt)); - - spin_lock_irqsave(&ha->list_lock, flags); - dead_cnt = online_cnt = 0; - list_for_each_safe(list, templist, &ha->retry_queue) { - sp = list_entry(list, srb_t, list); - q = sp->lun_queue; - DEBUG3(printk("scsi(%ld): pid=%ld sp=%p, " - "spflags=0x%x, q_flag= 0x%lx\n", - ha->host_no, sp->cmd->serial_number, sp, - sp->flags, q->q_flag)); - - if (q == NULL) - continue; - fcport = q->fclun->fcport; - - if (atomic_read(&fcport->state) == - FCS_DEVICE_DEAD || - atomic_read(&fcport->ha->loop_state) == LOOP_DEAD) { - - __del_from_retry_queue(ha, sp); - sp->cmd->result = DID_NO_CONNECT << 16; - if (atomic_read(&fcport->ha->loop_state) == - LOOP_DOWN) - sp->err_id = SRB_ERR_LOOP; - else - sp->err_id = SRB_ERR_PORT; - sp->cmd->host_scribble = - (unsigned char *) NULL; - __add_to_done_queue(ha, sp); - dead_cnt++; - } else if (atomic_read(&fcport->state) != - FCS_DEVICE_LOST) { - - __del_from_retry_queue(ha, sp); - sp->cmd->result = DID_BUS_BUSY << 16; - sp->cmd->host_scribble = - (unsigned char *) NULL; - __add_to_done_queue(ha, sp); - online_cnt++; - } - } /* list_for_each_safe() */ - spin_unlock_irqrestore(&ha->list_lock, flags); - - DEBUG(printk("scsi(%ld): done processing retry queue " - "- dead=%d, online=%d\n ", - ha->host_no, dead_cnt, online_cnt)); - } - - /* Process commands in scsi retry queue */ - if (test_and_clear_bit(SCSI_RESTART_NEEDED, &ha->dpc_flags)) { - /* - * Any requests we want to delay for some period is put - * in the scsi retry queue with a delay added. The - * timer will schedule a "scsi_restart_needed" every - * second as long as there are requests in the scsi - * queue. - */ - DEBUG(printk("scsi(%ld): DPC checking scsi " - "retry_q.total=%d\n", - ha->host_no, ha->scsi_retry_q_cnt)); - - online_cnt = 0; - spin_lock_irqsave(&ha->list_lock, flags); - list_for_each_safe(list, templist, - &ha->scsi_retry_queue) { - - sp = list_entry(list, srb_t, list); - q = sp->lun_queue; - tq = sp->tgt_queue; - - DEBUG3(printk("scsi(%ld): scsi_retry_q: " - "pid=%ld sp=%p, spflags=0x%x, " - "q_flag= 0x%lx,q_state=%d\n", - ha->host_no, sp->cmd->serial_number, - sp, sp->flags, q->q_flag, q->q_state)); - - /* Was this lun suspended */ - if (q->q_state != LUN_STATE_WAIT) { - online_cnt++; - __del_from_scsi_retry_queue(ha, sp); - - if (test_bit(TQF_RETRY_CMDS, - &tq->flags)) { - qla2x00_extend_timeout(sp->cmd, - (sp->cmd->timeout_per_command / HZ) - QLA_CMD_TIMER_DELTA); - __add_to_pending_queue(ha, sp); - retry_cmds++; - } else - __add_to_retry_queue(ha, sp); - } - - /* Was this command suspended for N secs */ - if (sp->delay != 0) { - sp->delay--; - if (sp->delay == 0) { - online_cnt++; - __del_from_scsi_retry_queue( - ha, sp); - __add_to_retry_queue(ha,sp); - } - } - } - spin_unlock_irqrestore(&ha->list_lock, flags); - - /* Clear all Target Unsuspended bits */ - for (t = 0; t < ha->max_targets; t++) { - if ((tq = ha->otgt[t]) == NULL) - continue; - - if (test_bit(TQF_RETRY_CMDS, &tq->flags)) - clear_bit(TQF_RETRY_CMDS, &tq->flags); - } - if (retry_cmds) - qla2x00_next(ha); - - DEBUG(if (online_cnt > 0)) - DEBUG(printk("scsi(%ld): dpc() found scsi reqs to " - "restart= %d\n", - ha->host_no, online_cnt)); - } - if (ha->flags.mbox_busy) { - if (!list_empty(&ha->done_queue)) - qla2x00_done(ha); - ha->dpc_active = 0; continue; } @@ -3493,28 +2712,6 @@ qla2x00_do_dpc(void *data) ha->host_no)); } - - if (test_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags)) { - DEBUG(printk("scsi(%ld): qla2x00_restart_queues()\n", - ha->host_no)); - - qla2x00_restart_queues(ha, 0); - - DEBUG(printk("scsi(%ld): qla2x00_restart_queues - end\n", - ha->host_no)); - } - - if (test_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags)) { - - DEBUG(printk("scsi(%ld): qla2x00_abort_queues()\n", - ha->host_no)); - - qla2x00_abort_queues(ha, 0); - - DEBUG(printk("scsi(%ld): qla2x00_abort_queues - end\n", - ha->host_no)); - } - if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) { DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n", @@ -3527,13 +2724,9 @@ qla2x00_do_dpc(void *data) ha->host_no)); } - if (!ha->interrupts_on) qla2x00_enable_intrs(ha); - if (!list_empty(&ha->done_queue)) - qla2x00_done(ha); - ha->dpc_active = 0; } /* End of while(1) */ @@ -3549,45 +2742,6 @@ qla2x00_do_dpc(void *data) } /* - * qla2x00_abort_queues - * Abort all commands on queues on device - * - * Input: - * ha = adapter block pointer. - * - * Context: - * Interrupt context. - */ -void -qla2x00_abort_queues(scsi_qla_host_t *ha, uint8_t doneqflg) -{ - - srb_t *sp; - struct list_head *list, *temp; - unsigned long flags; - - clear_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags); - - /* Return all commands device queues. */ - spin_lock_irqsave(&ha->list_lock,flags); - list_for_each_safe(list, temp, &ha->pending_queue) { - sp = list_entry(list, srb_t, list); - - if (sp->flags & SRB_ABORTED) - continue; - - /* Remove srb from LUN queue. */ - __del_from_pending_queue(ha, sp); - - /* Set ending status. */ - sp->cmd->result = DID_BUS_BUSY << 16; - - __add_to_done_queue(ha, sp); - } - spin_unlock_irqrestore(&ha->list_lock, flags); -} - -/* * qla2x00_rst_aen * Processes asynchronous reset. * @@ -3632,6 +2786,36 @@ qla2x00_get_new_sp(scsi_qla_host_t *ha) return (sp); } +static void +qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp) +{ + struct scsi_cmnd *cmd = sp->cmd; + + if (sp->flags & SRB_DMA_VALID) { + if (cmd->use_sg) { + dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer, + cmd->use_sg, cmd->sc_data_direction); + } else if (cmd->request_bufflen) { + dma_unmap_single(&ha->pdev->dev, sp->dma_handle, + cmd->request_bufflen, cmd->sc_data_direction); + } + sp->flags &= ~SRB_DMA_VALID; + } +} + +void +qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp) +{ + struct scsi_cmnd *cmd = sp->cmd; + + qla2x00_sp_free_dma(ha, sp); + + CMD_SP(cmd) = NULL; + mempool_free(sp, ha->srb_mempool); + + cmd->scsi_done(cmd); +} + /************************************************************************** * qla2x00_timer * @@ -3643,30 +2827,12 @@ qla2x00_get_new_sp(scsi_qla_host_t *ha) static void qla2x00_timer(scsi_qla_host_t *ha) { - int t,l; unsigned long cpu_flags = 0; fc_port_t *fcport; - os_lun_t *lq; - os_tgt_t *tq; int start_dpc = 0; int index; srb_t *sp; - - /* - * We try and restart any request in the retry queue every second. - */ - if (!list_empty(&ha->retry_queue)) { - set_bit(PORT_RESTART_NEEDED, &ha->dpc_flags); - start_dpc++; - } - - /* - * We try and restart any request in the scsi_retry queue every second. - */ - if (!list_empty(&ha->scsi_retry_queue)) { - set_bit(SCSI_RESTART_NEEDED, &ha->dpc_flags); - start_dpc++; - } + int t; /* * Ports - Port down timer. @@ -3696,59 +2862,6 @@ qla2x00_timer(scsi_qla_host_t *ha) t++; } /* End of for fcport */ - /* - * LUNS - lun suspend timer. - * - * Whenever, a lun is suspended the timer starts decrementing its - * suspend timer every second until it reaches zero. Once it reaches - * zero the lun retry count is decremented. - */ - - /* - * FIXME(dg) - Need to convert this linear search of luns into a search - * of a list of suspended luns. - */ - for (t = 0; t < ha->max_targets; t++) { - if ((tq = ha->otgt[t]) == NULL) - continue; - - for (l = 0; l < ha->max_luns; l++) { - if ((lq = (os_lun_t *) tq->olun[l]) == NULL) - continue; - - spin_lock_irqsave(&lq->q_lock, cpu_flags); - if (lq->q_state == LUN_STATE_WAIT && - atomic_read(&lq->q_timer) != 0) { - - if (atomic_dec_and_test(&lq->q_timer) != 0) { - /* - * A delay should immediately - * transition to a READY state - */ - if (test_and_clear_bit(LUN_EXEC_DELAYED, - &lq->q_flag)) { - lq->q_state = LUN_STATE_READY; - } - else { - lq->q_count++; - if (lq->q_count == lq->q_max) - lq->q_state = - LUN_STATE_TIMEOUT; - else - lq->q_state = - LUN_STATE_RUN; - } - } - DEBUG3(printk("scsi(%ld): lun%d - timer %d, " - "count=%d, max=%d, state=%d\n", - ha->host_no, - l, - atomic_read(&lq->q_timer), - lq->q_count, lq->q_max, lq->q_state)); - } - spin_unlock_irqrestore(&lq->q_lock, cpu_flags); - } /* End of for luns */ - } /* End of for targets */ /* Loop down handler. */ if (atomic_read(&ha->loop_down_timer) > 0 && @@ -3808,19 +2921,12 @@ qla2x00_timer(scsi_qla_host_t *ha) atomic_read(&ha->loop_down_timer))); } - /* - * Done Q Handler -- dgFIXME This handler will kick off doneq if we - * haven't process it in 2 seconds. - */ - if (!list_empty(&ha->done_queue)) - qla2x00_done(ha); - - /* Schedule the DPC routine if needed */ if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) || test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) || start_dpc || test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) || + test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) || test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) && ha->dpc_wait && !ha->dpc_active) { @@ -3830,496 +2936,6 @@ qla2x00_timer(scsi_qla_host_t *ha) qla2x00_restart_timer(ha, WATCH_INTERVAL); } -/* - * qla2x00_extend_timeout - * This routine will extend the timeout to the specified value. - * - * Input: - * cmd = SCSI command structure - * - * Returns: - * None. - */ -void -qla2x00_extend_timeout(struct scsi_cmnd *cmd, int timeout) -{ - srb_t *sp = (srb_t *) CMD_SP(cmd); - u_long our_jiffies = (timeout * HZ) + jiffies; - - sp->ext_history= 0; - sp->e_start = jiffies; - if (cmd->eh_timeout.function) { - mod_timer(&cmd->eh_timeout,our_jiffies); - sp->ext_history |= 1; - } - if (sp->timer.function != NULL) { - /* - * Our internal timer should timeout before the midlayer has a - * chance begin the abort process - */ - mod_timer(&sp->timer,our_jiffies - (QLA_CMD_TIMER_DELTA * HZ)); - - sp->ext_history |= 2; - } -} - -/************************************************************************** -* qla2x00_cmd_timeout -* -* Description: -* Handles the command if it times out in any state. -* -* Input: -* sp - pointer to validate -* -* Returns: -* None. -* Note:Need to add the support for if( sp->state == SRB_FAILOVER_STATE). -**************************************************************************/ -void -qla2x00_cmd_timeout(srb_t *sp) -{ - int t, l; - int processed; - scsi_qla_host_t *vis_ha, *dest_ha; - struct scsi_cmnd *cmd; - unsigned long flags, cpu_flags; - fc_port_t *fcport; - - cmd = sp->cmd; - vis_ha = (scsi_qla_host_t *)cmd->device->host->hostdata; - - DEBUG3(printk("cmd_timeout: Entering sp->state = %x\n", sp->state)); - - t = cmd->device->id; - l = cmd->device->lun; - fcport = sp->fclun->fcport; - dest_ha = sp->ha; - - /* - * If IO is found either in retry Queue - * OR in Lun Queue - * Return this IO back to host - */ - spin_lock_irqsave(&vis_ha->list_lock, flags); - processed = 0; - if (sp->state == SRB_PENDING_STATE) { - __del_from_pending_queue(vis_ha, sp); - DEBUG2(printk("scsi(%ld): Found in Pending queue pid %ld, " - "State = %x., fcport state=%d sjiffs=%lx njiffs=%lx\n", - vis_ha->host_no, cmd->serial_number, sp->state, - atomic_read(&fcport->state), sp->r_start, jiffies)); - - /* - * If FC_DEVICE is marked as dead return the cmd with - * DID_NO_CONNECT status. Otherwise set the host_byte to - * DID_BUS_BUSY to let the OS retry this cmd. - */ - if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD || - atomic_read(&fcport->ha->loop_state) == LOOP_DEAD) { - cmd->result = DID_NO_CONNECT << 16; - if (atomic_read(&fcport->ha->loop_state) == LOOP_DOWN) - sp->err_id = SRB_ERR_LOOP; - else - sp->err_id = SRB_ERR_PORT; - } else { - cmd->result = DID_BUS_BUSY << 16; - } - __add_to_done_queue(vis_ha, sp); - processed++; - } - spin_unlock_irqrestore(&vis_ha->list_lock, flags); - - if (processed) { - qla2x00_done(vis_ha); - return; - } - - spin_lock_irqsave(&dest_ha->list_lock, flags); - if ((sp->state == SRB_RETRY_STATE) || - (sp->state == SRB_SCSI_RETRY_STATE)) { - - DEBUG2(printk("scsi(%ld): Found in (Scsi) Retry queue or " - "failover Q pid %ld, State = %x., fcport state=%d " - "jiffies=%lx retried=%d\n", - dest_ha->host_no, cmd->serial_number, sp->state, - atomic_read(&fcport->state), jiffies, cmd->retries)); - - if ((sp->state == SRB_RETRY_STATE)) { - __del_from_retry_queue(dest_ha, sp); - } else if ((sp->state == SRB_SCSI_RETRY_STATE)) { - __del_from_scsi_retry_queue(dest_ha, sp); - } - - /* - * If FC_DEVICE is marked as dead return the cmd with - * DID_NO_CONNECT status. Otherwise set the host_byte to - * DID_BUS_BUSY to let the OS retry this cmd. - */ - if ((atomic_read(&fcport->state) == FCS_DEVICE_DEAD) || - atomic_read(&dest_ha->loop_state) == LOOP_DEAD) { - qla2x00_extend_timeout(cmd, EXTEND_CMD_TIMEOUT); - cmd->result = DID_NO_CONNECT << 16; - if (atomic_read(&dest_ha->loop_state) == LOOP_DOWN) - sp->err_id = SRB_ERR_LOOP; - else - sp->err_id = SRB_ERR_PORT; - } else { - cmd->result = DID_BUS_BUSY << 16; - } - - __add_to_done_queue(dest_ha, sp); - processed++; - } - spin_unlock_irqrestore(&dest_ha->list_lock, flags); - - if (processed) { - qla2x00_done(dest_ha); - return; - } - - spin_lock_irqsave(&dest_ha->list_lock, cpu_flags); - if (sp->state == SRB_DONE_STATE) { - /* IO in done_q -- leave it */ - DEBUG(printk("scsi(%ld): Found in Done queue pid %ld sp=%p.\n", - dest_ha->host_no, cmd->serial_number, sp)); - } else if (sp->state == SRB_SUSPENDED_STATE) { - DEBUG(printk("scsi(%ld): Found SP %p in suspended state " - "- pid %ld:\n", - dest_ha->host_no, sp, cmd->serial_number)); - DEBUG(qla2x00_dump_buffer((uint8_t *)sp, sizeof(srb_t));) - } else if (sp->state == SRB_ACTIVE_STATE) { - /* - * IO is with ISP find the command in our active list. - */ - spin_unlock_irqrestore(&dest_ha->list_lock, cpu_flags); - spin_lock_irqsave(&dest_ha->hardware_lock, flags); - if (sp == dest_ha->outstanding_cmds[ - (unsigned long)sp->cmd->host_scribble]) { - - DEBUG(printk("cmd_timeout: Found in ISP \n")); - - if (sp->flags & SRB_TAPE) { - /* - * We cannot allow the midlayer error handler - * to wakeup and begin the abort process. - * Extend the timer so that the firmware can - * properly return the IOCB. - */ - DEBUG(printk("cmd_timeout: Extending timeout " - "of FCP2 tape command!\n")); - qla2x00_extend_timeout(sp->cmd, - EXTEND_CMD_TIMEOUT); - } - sp->state = SRB_ACTIVE_TIMEOUT_STATE; - spin_unlock_irqrestore(&dest_ha->hardware_lock, flags); - } else { - spin_unlock_irqrestore(&dest_ha->hardware_lock, flags); - printk(KERN_INFO - "qla_cmd_timeout: State indicates it is with " - "ISP, But not in active array\n"); - } - spin_lock_irqsave(&dest_ha->list_lock, cpu_flags); - } else if (sp->state == SRB_ACTIVE_TIMEOUT_STATE) { - DEBUG(printk("qla2100%ld: Found in Active timeout state" - "pid %ld, State = %x., \n", - dest_ha->host_no, - sp->cmd->serial_number, sp->state);) - } else { - /* EMPTY */ - DEBUG2(printk("cmd_timeout%ld: LOST command state = " - "0x%x, sp=%p\n", - vis_ha->host_no, sp->state,sp);) - - qla_printk(KERN_INFO, vis_ha, - "cmd_timeout: LOST command state = 0x%x\n", sp->state); - } - spin_unlock_irqrestore(&dest_ha->list_lock, cpu_flags); - - DEBUG3(printk("cmd_timeout: Leaving\n");) -} - -/************************************************************************** -* qla2x00_done -* Process completed commands. -* -* Input: -* old_ha = adapter block pointer. -* -**************************************************************************/ -void -qla2x00_done(scsi_qla_host_t *old_ha) -{ - os_lun_t *lq; - struct scsi_cmnd *cmd; - unsigned long flags = 0; - scsi_qla_host_t *ha; - scsi_qla_host_t *vis_ha; - int send_marker_once = 0; - srb_t *sp, *sptemp; - LIST_HEAD(local_sp_list); - - /* - * Get into local queue such that we do not wind up calling done queue - * tasklet for the same IOs from DPC or any other place. - */ - spin_lock_irqsave(&old_ha->list_lock, flags); - list_splice_init(&old_ha->done_queue, &local_sp_list); - spin_unlock_irqrestore(&old_ha->list_lock, flags); - - /* - * All done commands are in the local queue, now do the call back. - */ - list_for_each_entry_safe(sp, sptemp, &local_sp_list, list) { - old_ha->done_q_cnt--; - sp->state = SRB_NO_QUEUE_STATE; - - /* remove command from local list */ - list_del_init(&sp->list); - - cmd = sp->cmd; - if (cmd == NULL) - continue; - - vis_ha = (scsi_qla_host_t *)cmd->device->host->hostdata; - lq = sp->lun_queue; - ha = sp->ha; - - if (sp->flags & SRB_DMA_VALID) { - sp->flags &= ~SRB_DMA_VALID; - - /* Release memory used for this I/O */ - if (cmd->use_sg) { - pci_unmap_sg(ha->pdev, cmd->request_buffer, - cmd->use_sg, cmd->sc_data_direction); - } else if (cmd->request_bufflen) { - pci_unmap_page(ha->pdev, sp->dma_handle, - cmd->request_bufflen, - cmd->sc_data_direction); - } - } - - - switch (host_byte(cmd->result)) { - case DID_OK: - case DID_ERROR: - break; - - case DID_RESET: - /* - * Set marker needed, so we don't have to - * send multiple markers - */ - if (!send_marker_once) { - ha->marker_needed = 1; - send_marker_once++; - } - - /* - * WORKAROUND - * - * A backdoor device-reset requires different - * error handling. This code differentiates - * between normal error handling and the - * backdoor method. - * - */ - if (ha->host->eh_active != EH_ACTIVE) - cmd->result = DID_BUS_BUSY << 16; - break; - - - case DID_ABORT: - sp->flags &= ~SRB_ABORT_PENDING; - sp->flags |= SRB_ABORTED; - - if (sp->flags & SRB_TIMEOUT) - cmd->result = DID_TIME_OUT << 16; - - break; - - default: - DEBUG2(printk("scsi(%ld:%d:%d) %s: did_error " - "= %d, comp-scsi= 0x%x-0x%x pid=%ld.\n", - vis_ha->host_no, - cmd->device->id, cmd->device->lun, - __func__, - host_byte(cmd->result), - CMD_COMPL_STATUS(cmd), - CMD_SCSI_STATUS(cmd), cmd->serial_number)); - break; - } - - /* - * Call the mid-level driver interrupt handler -- via sp_put() - */ - sp_put(ha, sp); - } /* end of while */ -} - -/* - * qla2x00_process_response_queue_in_zio_mode - * Process response queue completion as fast as possible - * to achieve Zero Interrupt Opertions-ZIO - * - * Input: - * ha = adapter block pointer. - * - * Context: - * Kernel context. - */ -static inline void -qla2x00_process_response_queue_in_zio_mode(scsi_qla_host_t *ha) -{ - unsigned long flags; - - /* Check for unprocessed commands in response queue. */ - if (!ha->flags.process_response_queue) - return; - if (!ha->flags.online) - return; - if (ha->response_ring_ptr->signature == RESPONSE_PROCESSED) - return; - - spin_lock_irqsave(&ha->hardware_lock,flags); - qla2x00_process_response_queue(ha); - spin_unlock_irqrestore(&ha->hardware_lock, flags); -} - -/* - * qla2x00_next - * Retrieve and process next job in the LUN queue. - * - * Input: - * tq = SCSI target queue pointer. - * lq = SCSI LUN queue pointer. - * TGT_LOCK must be already obtained. - * - * Output: - * Releases TGT_LOCK upon exit. - * - * Context: - * Kernel/Interrupt context. - * - * Note: This routine will always try to start I/O from visible HBA. - */ -void -qla2x00_next(scsi_qla_host_t *vis_ha) -{ - int rval; - unsigned long flags; - scsi_qla_host_t *dest_ha; - fc_port_t *fcport; - srb_t *sp, *sptemp; - LIST_HEAD(local_sp_list); - - dest_ha = NULL; - - spin_lock_irqsave(&vis_ha->list_lock, flags); - list_splice_init(&vis_ha->pending_queue, &local_sp_list); - vis_ha->qthreads = 0; - spin_unlock_irqrestore(&vis_ha->list_lock, flags); - - list_for_each_entry_safe(sp, sptemp, &local_sp_list, list) { - list_del_init(&sp->list); - sp->state = SRB_NO_QUEUE_STATE; - - fcport = sp->fclun->fcport; - dest_ha = fcport->ha; - - /* If device is dead then send request back to OS */ - if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD) { - sp->cmd->result = DID_NO_CONNECT << 16; - if (atomic_read(&dest_ha->loop_state) == LOOP_DOWN) - sp->err_id = SRB_ERR_LOOP; - else - sp->err_id = SRB_ERR_PORT; - - DEBUG3(printk("scsi(%ld): loop/port is down - pid=%ld, " - "sp=%p err_id=%d loopid=0x%x queued to dest HBA " - "scsi%ld.\n", dest_ha->host_no, - sp->cmd->serial_number, sp, sp->err_id, - fcport->loop_id, dest_ha->host_no)); - /* - * Initiate a failover - done routine will initiate. - */ - add_to_done_queue(vis_ha, sp); - - continue; - } - - /* - * SCSI Kluge: Whenever, we need to wait for an event such as - * loop down (i.e. loop_down_timer ) or port down (i.e. LUN - * request qeueue is suspended) then we will recycle new - * commands back to the SCSI layer. We do this because this is - * normally a temporary condition and we don't want the - * mid-level scsi.c driver to get upset and start aborting - * commands. The timeout value is extracted from the command - * minus 1-second and put on a retry queue (watchdog). Once the - * command timeout it is returned to the mid-level with a BUSY - * status, so the mid-level will retry it. This process - * continues until the LOOP DOWN time expires or the condition - * goes away. - */ - if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) && - (atomic_read(&fcport->state) != FCS_ONLINE || - test_bit(ABORT_ISP_ACTIVE, &dest_ha->dpc_flags) || - atomic_read(&dest_ha->loop_state) != LOOP_READY)) { - - DEBUG3(printk("scsi(%ld): pid=%ld port=0x%x state=%d " - "loop state=%d, loop counter=0x%x " - "dpc_flags=0x%lx\n", sp->cmd->serial_number, - dest_ha->host_no, fcport->loop_id, - atomic_read(&fcport->state), - atomic_read(&dest_ha->loop_state), - atomic_read(&dest_ha->loop_down_timer), - dest_ha->dpc_flags)); - - qla2x00_extend_timeout(sp->cmd, EXTEND_CMD_TIMEOUT); - add_to_retry_queue(vis_ha, sp); - - continue; - } - - /* - * If this request's lun is suspended then put the request on - * the scsi_retry queue. - */ - if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) && - sp->lun_queue->q_state == LUN_STATE_WAIT) { - DEBUG3(printk("scsi(%ld): lun wait state - pid=%ld, " - "opcode=%d, allowed=%d, retries=%d\n", - dest_ha->host_no, - sp->cmd->serial_number, - sp->cmd->cmnd[0], - sp->cmd->allowed, - sp->cmd->retries)); - - add_to_scsi_retry_queue(vis_ha, sp); - - continue; - } - - sp->lun_queue->io_cnt++; - - rval = qla2x00_start_scsi(sp); - if (rval != QLA_SUCCESS) { - /* Place request back on top of device queue */ - /* add to the top of queue */ - add_to_pending_queue_head(vis_ha, sp); - - sp->lun_queue->io_cnt--; - } - } - - if (!IS_QLA2100(vis_ha) && !IS_QLA2200(vis_ha)) { - /* Process response_queue if ZIO support is enabled*/ - qla2x00_process_response_queue_in_zio_mode(vis_ha); - - } -} - /* XXX(hch): crude hack to emulate a down_timeout() */ int qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout) |