From: Anirban Chakraborty Date: Wed, 5 Aug 2009 16:18:40 +0000 (-0700) Subject: [SCSI] qla2xxx: Fix to ensure driver works in sinlge queue mode if multiqueue fails X-Git-Tag: v2.6.32-rc1~689^2~145 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7163ea815170f8c5d56ead27d7e6fa3fa1f9844b;p=profile%2Fivi%2Fkernel-x86-ivi.git [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 Signed-off-by: James Bottomley Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c index 0f87962..5b0a222 100644 --- a/drivers/scsi/qla2xxx/qla_attr.c +++ b/drivers/scsi/qla2xxx/qla_attr.c @@ -1670,7 +1670,7 @@ qla24xx_vport_create(struct fc_vport *fc_vport, bool disable) qla24xx_vport_disable(fc_vport, disable); - if (ql2xmultique_tag) { + if (ha->flags.cpu_affinity_enabled) { req = ha->req_q_map[1]; goto vport_queue; } else if (ql2xmaxqueues == 1 || !ha->npiv_info) @@ -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"); diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 9fde8bf..68ab28c 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -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 diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index f2ce8e3..0cbe39e9 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -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; diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c index 13396be..c0ba370 100644 --- a/drivers/scsi/qla2xxx/qla_iocb.c +++ b/drivers/scsi/qla2xxx/qla_iocb.c @@ -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 diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index 8fcd99e..b6202fe 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -1507,7 +1507,7 @@ qla24xx_login_fabric(scsi_qla_host_t *vha, uint16_t loop_id, uint8_t domain, DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no)); - if (ql2xmultique_tag) + if (ha->flags.cpu_affinity_enabled) req = ha->req_q_map[0]; else req = vha->req; @@ -2324,7 +2324,7 @@ __qla24xx_issue_tmf(char *name, uint32_t type, struct fc_port *fcport, vha = fcport->vha; ha = vha->hw; req = vha->req; - if (ql2xmultique_tag) + if (ha->flags.cpu_affinity_enabled) rsp = ha->rsp_q_map[tag + 1]; else rsp = req->rsp; diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index f0396e7..d7b2713 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -287,9 +287,12 @@ static int qla25xx_setup_mode(struct scsi_qla_host *vha) int ques, req, ret; struct qla_hw_data *ha = vha->hw; + if (!(ha->fw_attributes & BIT_6)) { + qla_printk(KERN_INFO, ha, + "Firmware is not multi-queue capable\n"); + goto fail; + } if (ql2xmultique_tag) { - /* CPU affinity mode */ - ha->wq = create_workqueue("qla2xxx_wq"); /* create a request queue for IO */ options |= BIT_7; req = qla25xx_create_req_que(ha, options, 0, 0, -1, @@ -299,6 +302,7 @@ static int qla25xx_setup_mode(struct scsi_qla_host *vha) "Can't create request queue\n"); goto fail; } + ha->wq = create_workqueue("qla2xxx_wq"); vha->req = ha->req_q_map[req]; options |= BIT_1; for (ques = 1; ques < ha->max_rsp_queues; ques++) { @@ -309,6 +313,8 @@ static int qla25xx_setup_mode(struct scsi_qla_host *vha) goto fail2; } } + ha->flags.cpu_affinity_enabled = 1; + DEBUG2(qla_printk(KERN_INFO, ha, "CPU affinity mode enabled, no. of response" " queues:%d, no. of request queues:%d\n", @@ -317,8 +323,13 @@ static int qla25xx_setup_mode(struct scsi_qla_host *vha) return 0; fail2: qla25xx_delete_queues(vha); + destroy_workqueue(ha->wq); + ha->wq = NULL; fail: ha->mqenable = 0; + kfree(ha->req_q_map); + kfree(ha->rsp_q_map); + ha->max_req_queues = ha->max_rsp_queues = 1; return 1; } @@ -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;