[SCSI] lpfc 8.3.4: Consistently Implement persistent port disable

Consistently implement persistent port disable.

Ability was to be managed in the adapter via firmware via flash settings.
However, not all firmware images supported it. Uniformly support it
everywhere.

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 42 insertions, 17 deletions

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index f8271a587aab..900b5628ceb9 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -211,7 +211,7 @@ lpfc_config_port_prep(struct lpfc_hba *phba)
                 goto out_free_mbox;
 
         do {
-                lpfc_dump_mem(phba, pmb, offset);
+                lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);
                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 
                 if (rc != MBX_SUCCESS) {
@@ -425,6 +425,9 @@ lpfc_config_port_post(struct lpfc_hba *phba)
                 return -EIO;
         }
 
+        /* Check if the port is disabled */
+        lpfc_sli_read_link_ste(phba);
+
         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
         if (phba->cfg_hba_queue_depth > (mb->un.varRdConfig.max_xri+1))
                 phba->cfg_hba_queue_depth =
@@ -524,27 +527,49 @@ lpfc_config_port_post(struct lpfc_hba *phba)
         /* Set up error attention (ERATT) polling timer */
         mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL);
 
-        lpfc_init_link(phba, pmb, phba->cfg_topology, phba->cfg_link_speed);
-        pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
-        lpfc_set_loopback_flag(phba);
-        rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
-        if (rc != MBX_SUCCESS) {
-                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+        /* Check if the port is disabled */
+        lpfc_sli_read_serdes_param(phba);
+
+        if (phba->hba_flag & LINK_DISABLED) {
+                lpfc_printf_log(phba,
+                        KERN_ERR, LOG_INIT,
+                        "2598 Adapter Link is disabled.\n");
+                lpfc_down_link(phba, pmb);
+                pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+                rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
+                if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
+                        lpfc_printf_log(phba,
+                        KERN_ERR, LOG_INIT,
+                        "2599 Adapter failed to issue DOWN_LINK"
+                        " mbox command rc 0x%x\n", rc);
+
+                        mempool_free(pmb, phba->mbox_mem_pool);
+                        return -EIO;
+                }
+        } else {
+                lpfc_init_link(phba, pmb, phba->cfg_topology,
+                        phba->cfg_link_speed);
+                pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+                lpfc_set_loopback_flag(phba);
+                rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
+                if (rc != MBX_SUCCESS) {
+                        lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                                 "0454 Adapter failed to init, mbxCmd x%x "
                                 "INIT_LINK, mbxStatus x%x\n",
                                 mb->mbxCommand, mb->mbxStatus);
 
-                /* Clear all interrupt enable conditions */
-                writel(0, phba->HCregaddr);
-                readl(phba->HCregaddr); /* flush */
-                /* Clear all pending interrupts */
-                writel(0xffffffff, phba->HAregaddr);
-                readl(phba->HAregaddr); /* flush */
+                        /* Clear all interrupt enable conditions */
+                        writel(0, phba->HCregaddr);
+                        readl(phba->HCregaddr); /* flush */
+                        /* Clear all pending interrupts */
+                        writel(0xffffffff, phba->HAregaddr);
+                        readl(phba->HAregaddr); /* flush */
 
-                phba->link_state = LPFC_HBA_ERROR;
-                if (rc != MBX_BUSY)
-                        mempool_free(pmb, phba->mbox_mem_pool);
-                return -EIO;
+                        phba->link_state = LPFC_HBA_ERROR;
+                        if (rc != MBX_BUSY)
+                                mempool_free(pmb, phba->mbox_mem_pool);
+                        return -EIO;
+                }
         }
         /* MBOX buffer will be freed in mbox compl */
         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);