[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>
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_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 @@
}
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 @@
spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
}
- if (!list_empty(&ha->done_queue))
- qla2x00_done(ha);
-
return (IRQ_HANDLED);
}
@@ -206,7 +200,6 @@
}
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 @@
spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
}
- if (!list_empty(&ha->done_queue))
- qla2x00_done(ha);
-
return (IRQ_HANDLED);
}
@@ -714,7 +704,7 @@
/* 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 @@
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 @@
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 @@
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 @@
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 @@
* 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 @@
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 @@
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 @@
"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 @@
/* 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 @@
/* 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 @@
} 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 @@
/* 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);
}