[SCSI] bfa: Register port with SCSI even on port init failure

This patch addresses the issue of port not being registered with SCSI
layer on bfa or firmware initialization failure and subsequently failure
in collecting driver traces for debugging port init failures. Also it
has minor changes related to bfad state machine clean up.

Signed-off-by: Vijaya Mohan Guvva <vmohan@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/bfa/bfad.c b/drivers/scsi/bfa/bfad.c
index fc80a325a1e6577c8fb5225d9f8a7ea614311540..6cf9d440cc9c61b6748c11cab3f1a86038e700c7 100644 (file)
--- a/drivers/scsi/bfa/bfad.c
+++ b/drivers/scsi/bfa/bfad.c
@@ -204,6 +204,7 @@ static void
 bfad_sm_created(struct bfad_s *bfad, enum bfad_sm_event event)
 {
        unsigned long flags;
+       bfa_status_t ret;
 
        bfa_trc(bfad, event);
 
@@ -217,7 +218,7 @@ bfad_sm_created(struct bfad_s *bfad, enum bfad_sm_event event)
                if (bfad_setup_intr(bfad)) {
                        printk(KERN_WARNING "bfad%d: bfad_setup_intr failed\n",
                                        bfad->inst_no);
-                       bfa_sm_send_event(bfad, BFAD_E_INTR_INIT_FAILED);
+                       bfa_sm_send_event(bfad, BFAD_E_INIT_FAILED);
                        break;
                }
 
@@ -242,8 +243,26 @@ bfad_sm_created(struct bfad_s *bfad, enum bfad_sm_event event)
                        printk(KERN_WARNING
                                "bfa %s: bfa init failed\n",
                                bfad->pci_name);
+                       spin_lock_irqsave(&bfad->bfad_lock, flags);
+                       bfa_fcs_init(&bfad->bfa_fcs);
+                       spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+
+                       ret = bfad_cfg_pport(bfad, BFA_LPORT_ROLE_FCP_IM);
+                       if (ret != BFA_STATUS_OK) {
+                               init_completion(&bfad->comp);
+
+                               spin_lock_irqsave(&bfad->bfad_lock, flags);
+                               bfad->pport.flags |= BFAD_PORT_DELETE;
+                               bfa_fcs_exit(&bfad->bfa_fcs);
+                               spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+
+                               wait_for_completion(&bfad->comp);
+
+                               bfa_sm_send_event(bfad, BFAD_E_INIT_FAILED);
+                               break;
+                       }
                        bfad->bfad_flags |= BFAD_HAL_INIT_FAIL;
-                       bfa_sm_send_event(bfad, BFAD_E_INIT_FAILED);
+                       bfa_sm_send_event(bfad, BFAD_E_HAL_INIT_FAILED);
                }
 
                break;
@@ -273,12 +292,14 @@ bfad_sm_initializing(struct bfad_s *bfad, enum bfad_sm_event event)
                spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 
                retval = bfad_start_ops(bfad);
-               if (retval != BFA_STATUS_OK)
+               if (retval != BFA_STATUS_OK) {
+                       bfa_sm_set_state(bfad, bfad_sm_failed);
                        break;
+               }
                bfa_sm_set_state(bfad, bfad_sm_operational);
                break;
 
-       case BFAD_E_INTR_INIT_FAILED:
+       case BFAD_E_INIT_FAILED:
                bfa_sm_set_state(bfad, bfad_sm_uninit);
                kthread_stop(bfad->bfad_tsk);
                spin_lock_irqsave(&bfad->bfad_lock, flags);
@@ -286,7 +307,7 @@ bfad_sm_initializing(struct bfad_s *bfad, enum bfad_sm_event event)
                spin_unlock_irqrestore(&bfad->bfad_lock, flags);
                break;
 
-       case BFAD_E_INIT_FAILED:
+       case BFAD_E_HAL_INIT_FAILED:
                bfa_sm_set_state(bfad, bfad_sm_failed);
                break;
        default:
@@ -310,13 +331,8 @@ bfad_sm_failed(struct bfad_s *bfad, enum bfad_sm_event event)
                break;
 
        case BFAD_E_STOP:
-               if (bfad->bfad_flags & BFAD_CFG_PPORT_DONE)
-                       bfad_uncfg_pport(bfad);
-               if (bfad->bfad_flags & BFAD_FC4_PROBE_DONE) {
-                       bfad_im_probe_undo(bfad);
-                       bfad->bfad_flags &= ~BFAD_FC4_PROBE_DONE;
-               }
-               bfad_stop(bfad);
+               bfa_sm_set_state(bfad, bfad_sm_fcs_exit);
+               bfa_sm_send_event(bfad, BFAD_E_FCS_EXIT_COMP);
                break;
 
        case BFAD_E_EXIT_COMP:
@@ -824,7 +840,7 @@ bfad_drv_init(struct bfad_s *bfad)
                printk(KERN_WARNING
                        "Not enough memory to attach all Brocade HBA ports, %s",
                        "System may need more memory.\n");
-               goto out_hal_mem_alloc_failure;
+               return BFA_STATUS_FAILED;
        }
 
        bfad->bfa.trcmod = bfad->trcmod;
@@ -841,31 +857,11 @@ bfad_drv_init(struct bfad_s *bfad)
        bfad->bfa_fcs.trcmod = bfad->trcmod;
        bfa_fcs_attach(&bfad->bfa_fcs, &bfad->bfa, bfad, BFA_FALSE);
        bfad->bfa_fcs.fdmi_enabled = fdmi_enable;
-       bfa_fcs_init(&bfad->bfa_fcs);
        spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 
        bfad->bfad_flags |= BFAD_DRV_INIT_DONE;
 
-       /* configure base port */
-       rc = bfad_cfg_pport(bfad, BFA_LPORT_ROLE_FCP_IM);
-       if (rc != BFA_STATUS_OK)
-               goto out_cfg_pport_fail;
-
        return BFA_STATUS_OK;
-
-out_cfg_pport_fail:
-       /* fcs exit - on cfg pport failure */
-       spin_lock_irqsave(&bfad->bfad_lock, flags);
-       init_completion(&bfad->comp);
-       bfad->pport.flags |= BFAD_PORT_DELETE;
-       bfa_fcs_exit(&bfad->bfa_fcs);
-       spin_unlock_irqrestore(&bfad->bfad_lock, flags);
-       wait_for_completion(&bfad->comp);
-       /* bfa detach - free hal memory */
-       bfa_detach(&bfad->bfa);
-       bfad_hal_mem_release(bfad);
-out_hal_mem_alloc_failure:
-       return BFA_STATUS_FAILED;
 }
 
 void
@@ -1009,13 +1005,19 @@ bfad_start_ops(struct bfad_s *bfad) {
        /* FCS driver info init */
        spin_lock_irqsave(&bfad->bfad_lock, flags);
        bfa_fcs_driver_info_init(&bfad->bfa_fcs, &driver_info);
+
+       if (bfad->bfad_flags & BFAD_CFG_PPORT_DONE)
+               bfa_fcs_update_cfg(&bfad->bfa_fcs);
+       else
+               bfa_fcs_init(&bfad->bfa_fcs);
+
        spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 
-       /*
-        * FCS update cfg - reset the pwwn/nwwn of fabric base logical port
-        * with values learned during bfa_init firmware GETATTR REQ.
-        */
-       bfa_fcs_update_cfg(&bfad->bfa_fcs);
+       if (!(bfad->bfad_flags & BFAD_CFG_PPORT_DONE)) {
+               retval = bfad_cfg_pport(bfad, BFA_LPORT_ROLE_FCP_IM);
+               if (retval != BFA_STATUS_OK)
+                       return BFA_STATUS_FAILED;
+       }
 
        /* Setup fc host fixed attribute if the lk supports */
        bfad_fc_host_init(bfad->pport.im_port);
@@ -1026,10 +1028,6 @@ bfad_start_ops(struct bfad_s *bfad) {
                printk(KERN_WARNING "bfad_im_probe failed\n");
                if (bfa_sm_cmp_state(bfad, bfad_sm_initializing))
                        bfa_sm_set_state(bfad, bfad_sm_failed);
-               bfad_im_probe_undo(bfad);
-               bfad->bfad_flags &= ~BFAD_FC4_PROBE_DONE;
-               bfad_uncfg_pport(bfad);
-               bfad_stop(bfad);
                return BFA_STATUS_FAILED;
        } else
                bfad->bfad_flags |= BFAD_FC4_PROBE_DONE;
@@ -1399,7 +1397,6 @@ bfad_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid)
        return 0;
 
 out_bfad_sm_failure:
-       bfa_detach(&bfad->bfa);
        bfad_hal_mem_release(bfad);
 out_drv_init_failure:
        /* Remove the debugfs node for this bfad */
@@ -1534,7 +1531,7 @@ restart_bfa(struct bfad_s *bfad)
        if (bfad_setup_intr(bfad)) {
                dev_printk(KERN_WARNING, &pdev->dev,
                           "%s: bfad_setup_intr failed\n", bfad->pci_name);
-               bfa_sm_send_event(bfad, BFAD_E_INTR_INIT_FAILED);
+               bfa_sm_send_event(bfad, BFAD_E_INIT_FAILED);
                return -1;
        }
 

diff --git a/drivers/scsi/bfa/bfad_drv.h b/drivers/scsi/bfa/bfad_drv.h
index 78d3401bc16bb25d6dba7b5d6b6ef0c520825434..cf56d3d1dc8ac5b7d38de47cbff51d2e4f6512cd 100644 (file)
--- a/drivers/scsi/bfa/bfad_drv.h
+++ b/drivers/scsi/bfa/bfad_drv.h
@@ -240,8 +240,8 @@ enum bfad_sm_event {
        BFAD_E_KTHREAD_CREATE_FAILED    = 2,
        BFAD_E_INIT                     = 3,
        BFAD_E_INIT_SUCCESS             = 4,
-       BFAD_E_INIT_FAILED              = 5,
-       BFAD_E_INTR_INIT_FAILED         = 6,
+       BFAD_E_HAL_INIT_FAILED          = 5,
+       BFAD_E_INIT_FAILED              = 6,
        BFAD_E_FCS_EXIT_COMP            = 7,
        BFAD_E_EXIT_COMP                = 8,
        BFAD_E_STOP                     = 9