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linux-sg2042
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[SCSI] qla2xxx: Fix to ensure driver works in sinlge queue mode if multiqueue fails 

When the multiqueue mode fails to work, the driver falls back on single
queue mode. This ensures that the firmware is reinitialized with single
queue options and all the resources are readjusted accordingly.

Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Anirban Chakraborty 2009-08-05 09:18:40 -07:00 committed by James Bottomley
parent 09ccbcc628
commit 7163ea8151
6 changed files with 27 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/scsi/qla2xxx/qla_attr.c
View File

@ -1670,7 +1670,7 @@ qla24xx_vport_create(struct fc_vport *fc_vport, bool disable)
qla24xx_vport_disable(fc_vport, disable);
if (ql2xmultique_tag) {
if (ha->flags.cpu_affinity_enabled) {
req = ha->req_q_map[1];
goto vport_queue;
} else if (ql2xmaxqueues == 1 || !ha->npiv_info)
@ -1743,7 +1743,7 @@ qla24xx_vport_delete(struct fc_vport *fc_vport)
vha->host_no, vha->vp_idx, vha));
}
if (vha->req->id && !ql2xmultique_tag) {
if (vha->req->id && !ha->flags.cpu_affinity_enabled) {
if (qla25xx_delete_req_que(vha, vha->req) != QLA_SUCCESS)
qla_printk(KERN_WARNING, ha,
"Queue delete failed.\n");

1
drivers/scsi/qla2xxx/qla_def.h
View File

@ -2224,6 +2224,7 @@ struct qla_hw_data {
uint32_t chip_reset_done :1;
uint32_t port0 :1;
uint32_t running_gold_fw :1;
uint32_t cpu_affinity_enabled :1;
} flags;
/* This spinlock is used to protect "io transactions", you must

5
drivers/scsi/qla2xxx/qla_init.c
View File

@ -987,7 +987,6 @@ qla2x00_setup_chip(scsi_qla_host_t *vha)
ha->phy_version);
if (rval != QLA_SUCCESS)
goto failed;
ha->flags.npiv_supported = 0;
if (IS_QLA2XXX_MIDTYPE(ha) &&
(ha->fw_attributes & BIT_2)) {
@ -3244,7 +3243,7 @@ qla2x00_loop_resync(scsi_qla_host_t *vha)
struct req_que *req;
struct rsp_que *rsp;
if (ql2xmultique_tag)
if (vha->hw->flags.cpu_affinity_enabled)
req = vha->hw->req_q_map[0];
else
req = vha->req;
@ -4264,7 +4263,7 @@ qla24xx_configure_vhba(scsi_qla_host_t *vha)
return -EINVAL;
rval = qla2x00_fw_ready(base_vha);
if (ql2xmultique_tag)
if (ha->flags.cpu_affinity_enabled)
req = ha->req_q_map[0];
else
req = vha->req;

2
drivers/scsi/qla2xxx/qla_iocb.c
View File

@ -852,7 +852,7 @@ static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp)
struct qla_hw_data *ha = sp->fcport->vha->hw;
int affinity = cmd->request->cpu;
if (ql2xmultique_tag && affinity >= 0 &&
if (ha->flags.cpu_affinity_enabled && affinity >= 0 &&
affinity < ha->max_rsp_queues - 1)
*rsp = ha->rsp_q_map[affinity + 1];
else

4
drivers/scsi/qla2xxx/qla_mbx.c
View File

@ -1507,7 +1507,7 @@ qla24xx_login_fabric(scsi_qla_host_t *vha, uint16_t loop_id, uint8_t domain,
DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no));
if (ql2xmultique_tag)
if (ha->flags.cpu_affinity_enabled)
req = ha->req_q_map[0];
else
req = vha->req;
@ -2324,7 +2324,7 @@ __qla24xx_issue_tmf(char *name, uint32_t type, struct fc_port *fcport,
vha = fcport->vha;
ha = vha->hw;
req = vha->req;
if (ql2xmultique_tag)
if (ha->flags.cpu_affinity_enabled)
rsp = ha->rsp_q_map[tag + 1];
else
rsp = req->rsp;

23
drivers/scsi/qla2xxx/qla_os.c
View File

@ -287,9 +287,12 @@ static int qla25xx_setup_mode(struct scsi_qla_host *vha)
int ques, req, ret;
struct qla_hw_data *ha = vha->hw;
if (!(ha->fw_attributes & BIT_6)) {
qla_printk(KERN_INFO, ha,
"Firmware is not multi-queue capable\n");
goto fail;
}
if (ql2xmultique_tag) {
/* CPU affinity mode */
ha->wq = create_workqueue("qla2xxx_wq");
/* create a request queue for IO */
options |= BIT_7;
req = qla25xx_create_req_que(ha, options, 0, 0, -1,
@ -299,6 +302,7 @@ static int qla25xx_setup_mode(struct scsi_qla_host *vha)
"Can't create request queue\n");
goto fail;
}
ha->wq = create_workqueue("qla2xxx_wq");
vha->req = ha->req_q_map[req];
options |= BIT_1;
for (ques = 1; ques < ha->max_rsp_queues; ques++) {
@ -309,6 +313,8 @@ static int qla25xx_setup_mode(struct scsi_qla_host *vha)
goto fail2;
}
}
ha->flags.cpu_affinity_enabled = 1;
DEBUG2(qla_printk(KERN_INFO, ha,
"CPU affinity mode enabled, no. of response"
" queues:%d, no. of request queues:%d\n",
@ -317,8 +323,13 @@ static int qla25xx_setup_mode(struct scsi_qla_host *vha)
return 0;
fail2:
qla25xx_delete_queues(vha);
destroy_workqueue(ha->wq);
ha->wq = NULL;
fail:
ha->mqenable = 0;
kfree(ha->req_q_map);
kfree(ha->rsp_q_map);
ha->max_req_queues = ha->max_rsp_queues = 1;
return 1;
}
@ -1923,6 +1934,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
if (ret)
goto probe_init_failed;
/* Alloc arrays of request and response ring ptrs */
que_init:
if (!qla2x00_alloc_queues(ha)) {
qla_printk(KERN_WARNING, ha,
"[ERROR] Failed to allocate memory for queue"
@ -1959,11 +1971,14 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
goto probe_failed;
}
if (ha->mqenable)
if (qla25xx_setup_mode(base_vha))
if (ha->mqenable) {
if (qla25xx_setup_mode(base_vha)) {
qla_printk(KERN_WARNING, ha,
"Can't create queues, falling back to single"
" queue mode\n");
goto que_init;
}
}
if (ha->flags.running_gold_fw)
goto skip_dpc;