1 files changed, 325 insertions, 76 deletions

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index cd9697edf86..da9ba06ad58 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -621,6 +621,7 @@ lpfc_config_port_post(struct lpfc_hba *phba)
 /**
  * lpfc_hba_init_link - Initialize the FC link
  * @phba: pointer to lpfc hba data structure.
+ * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
  *
  * This routine will issue the INIT_LINK mailbox command call.
  * It is available to other drivers through the lpfc_hba data
@@ -632,7 +633,7 @@ lpfc_config_port_post(struct lpfc_hba *phba)
  *		Any other value - error
  **/
 int
-lpfc_hba_init_link(struct lpfc_hba *phba)
+lpfc_hba_init_link(struct lpfc_hba *phba, uint32_t flag)
 {
 	struct lpfc_vport *vport = phba->pport;
 	LPFC_MBOXQ_t *pmb;
@@ -651,7 +652,7 @@ lpfc_hba_init_link(struct lpfc_hba *phba)
 		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);
+	rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 	if (rc != MBX_SUCCESS) {
 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 			"0498 Adapter failed to init, mbxCmd x%x "
@@ -664,17 +665,21 @@ lpfc_hba_init_link(struct lpfc_hba *phba)
 		writel(0xffffffff, phba->HAregaddr);
 		readl(phba->HAregaddr); /* flush */
 		phba->link_state = LPFC_HBA_ERROR;
-		if (rc != MBX_BUSY)
+		if (rc != MBX_BUSY || flag == MBX_POLL)
 			mempool_free(pmb, phba->mbox_mem_pool);
 		return -EIO;
 	}
 	phba->cfg_suppress_link_up = LPFC_INITIALIZE_LINK;
+	if (flag == MBX_POLL)
+		mempool_free(pmb, phba->mbox_mem_pool);
 
 	return 0;
 }
 
 /**
  * lpfc_hba_down_link - this routine downs the FC link
+ * @phba: pointer to lpfc hba data structure.
+ * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
  *
  * This routine will issue the DOWN_LINK mailbox command call.
  * It is available to other drivers through the lpfc_hba data
@@ -685,7 +690,7 @@ lpfc_hba_init_link(struct lpfc_hba *phba)
  *		Any other value - error
  **/
 int
-lpfc_hba_down_link(struct lpfc_hba *phba)
+lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag)
 {
 	LPFC_MBOXQ_t *pmb;
 	int rc;
@@ -701,7 +706,7 @@ lpfc_hba_down_link(struct lpfc_hba *phba)
 		"0491 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);
+	rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 	if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 		lpfc_printf_log(phba,
 		KERN_ERR, LOG_INIT,
@@ -711,6 +716,9 @@ lpfc_hba_down_link(struct lpfc_hba *phba)
 		mempool_free(pmb, phba->mbox_mem_pool);
 		return -EIO;
 	}
+	if (flag == MBX_POLL)
+		mempool_free(pmb, phba->mbox_mem_pool);
+
 	return 0;
 }
 
@@ -1024,27 +1032,46 @@ lpfc_hb_timeout_handler(struct lpfc_hba *phba)
 	/* If there is no heart beat outstanding, issue a heartbeat command */
 	if (phba->cfg_enable_hba_heartbeat) {
 		if (!phba->hb_outstanding) {
-			pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
-			if (!pmboxq) {
-				mod_timer(&phba->hb_tmofunc,
-					  jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
-				return;
-			}
+			if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) &&
+				(list_empty(&psli->mboxq))) {
+				pmboxq = mempool_alloc(phba->mbox_mem_pool,
+							GFP_KERNEL);
+				if (!pmboxq) {
+					mod_timer(&phba->hb_tmofunc,
+						 jiffies +
+						 HZ * LPFC_HB_MBOX_INTERVAL);
+					return;
+				}
 
-			lpfc_heart_beat(phba, pmboxq);
-			pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
-			pmboxq->vport = phba->pport;
-			retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
+				lpfc_heart_beat(phba, pmboxq);
+				pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
+				pmboxq->vport = phba->pport;
+				retval = lpfc_sli_issue_mbox(phba, pmboxq,
+						MBX_NOWAIT);
+
+				if (retval != MBX_BUSY &&
+					retval != MBX_SUCCESS) {
+					mempool_free(pmboxq,
+							phba->mbox_mem_pool);
+					mod_timer(&phba->hb_tmofunc,
+						jiffies +
+						HZ * LPFC_HB_MBOX_INTERVAL);
+					return;
+				}
+				phba->skipped_hb = 0;
+				phba->hb_outstanding = 1;
+			} else if (time_before_eq(phba->last_completion_time,
+					phba->skipped_hb)) {
+				lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+					"2857 Last completion time not "
+					" updated in %d ms\n",
+					jiffies_to_msecs(jiffies
+						 - phba->last_completion_time));
+			} else
+				phba->skipped_hb = jiffies;
 
-			if (retval != MBX_BUSY && retval != MBX_SUCCESS) {
-				mempool_free(pmboxq, phba->mbox_mem_pool);
-				mod_timer(&phba->hb_tmofunc,
-					  jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
-				return;
-			}
 			mod_timer(&phba->hb_tmofunc,
 				  jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
-			phba->hb_outstanding = 1;
 			return;
 		} else {
 			/*
@@ -1818,6 +1845,10 @@ lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
 		m = (typeof(m)){"LPSe12002-ML1-E", "PCIe",
 				"EmulexSecure Fibre"};
 		break;
+	case PCI_DEVICE_ID_BALIUS:
+		m = (typeof(m)){"LPVe12002", "PCIe Shared I/O",
+				"Fibre Channel Adapter"};
+		break;
 	default:
 		m = (typeof(m)){"Unknown", "", ""};
 		break;
@@ -2279,10 +2310,32 @@ static void
 lpfc_block_mgmt_io(struct lpfc_hba * phba)
 {
 	unsigned long iflag;
+	uint8_t actcmd = MBX_HEARTBEAT;
+	unsigned long timeout;
+
 
 	spin_lock_irqsave(&phba->hbalock, iflag);
 	phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
+	if (phba->sli.mbox_active)
+		actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
 	spin_unlock_irqrestore(&phba->hbalock, iflag);
+	/* Determine how long we might wait for the active mailbox
+	 * command to be gracefully completed by firmware.
+	 */
+	timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, actcmd) * 1000) +
+			jiffies;
+	/* Wait for the outstnading mailbox command to complete */
+	while (phba->sli.mbox_active) {
+		/* Check active mailbox complete status every 2ms */
+		msleep(2);
+		if (time_after(jiffies, timeout)) {
+			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+				"2813 Mgmt IO is Blocked %x "
+				"- mbox cmd %x still active\n",
+				phba->sli.sli_flag, actcmd);
+			break;
+		}
+	}
 }
 
 /**
@@ -3247,10 +3300,10 @@ lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
 		if (!ndlp)
 			return 0;
 	}
-	if (phba->pport->port_state <= LPFC_FLOGI)
+	if (phba->pport->port_state < LPFC_FLOGI)
 		return NULL;
 	/* If virtual link is not yet instantiated ignore CVL */
-	if (vport->port_state <= LPFC_FDISC)
+	if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC))
 		return NULL;
 	shost = lpfc_shost_from_vport(vport);
 	if (!shost)
@@ -3323,29 +3376,7 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba,
 					"evt_tag:x%x, fcf_index:x%x\n",
 					acqe_fcoe->event_tag,
 					acqe_fcoe->index);
-		spin_lock_irq(&phba->hbalock);
-		if ((phba->fcf.fcf_flag & FCF_SCAN_DONE) ||
-		    (phba->hba_flag & FCF_DISC_INPROGRESS)) {
-			/*
-			 * If the current FCF is in discovered state or
-			 * FCF discovery is in progress, do nothing.
-			 */
-			spin_unlock_irq(&phba->hbalock);
-			break;
-		}
-
-		if (phba->fcf.fcf_flag & FCF_REDISC_EVT) {
-			/*
-			 * If fast FCF failover rescan event is pending,
-			 * do nothing.
-			 */
-			spin_unlock_irq(&phba->hbalock);
-			break;
-		}
-		spin_unlock_irq(&phba->hbalock);
-
-		if ((phba->fcf.fcf_flag & FCF_DISCOVERY) &&
-		    !(phba->fcf.fcf_flag & FCF_REDISC_FOV)) {
+		if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
 			/*
 			 * During period of FCF discovery, read the FCF
 			 * table record indexed by the event to update
@@ -3360,6 +3391,25 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba,
 			rc = lpfc_sli4_read_fcf_rec(phba, acqe_fcoe->index);
 		}
 
+		/* If the FCF discovery is in progress, do nothing. */
+		spin_lock_irq(&phba->hbalock);
+		if (phba->hba_flag & FCF_DISC_INPROGRESS) {
+			spin_unlock_irq(&phba->hbalock);
+			break;
+		}
+		/* If fast FCF failover rescan event is pending, do nothing */
+		if (phba->fcf.fcf_flag & FCF_REDISC_EVT) {
+			spin_unlock_irq(&phba->hbalock);
+			break;
+		}
+
+		/* If the FCF has been in discovered state, do nothing. */
+		if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {
+			spin_unlock_irq(&phba->hbalock);
+			break;
+		}
+		spin_unlock_irq(&phba->hbalock);
+
 		/* Otherwise, scan the entire FCF table and re-discover SAN */
 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
 				"2770 Start FCF table scan due to new FCF "
@@ -3385,13 +3435,9 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba,
 			"2549 FCF disconnected from network index 0x%x"
 			" tag 0x%x\n", acqe_fcoe->index,
 			acqe_fcoe->event_tag);
-		/* If the event is not for currently used fcf do nothing */
-		if (phba->fcf.current_rec.fcf_indx != acqe_fcoe->index)
-			break;
-		/* We request port to rediscover the entire FCF table for
-		 * a fast recovery from case that the current FCF record
-		 * is no longer valid if we are not in the middle of FCF
-		 * failover process already.
+		/*
+		 * If we are in the middle of FCF failover process, clear
+		 * the corresponding FCF bit in the roundrobin bitmap.
 		 */
 		spin_lock_irq(&phba->hbalock);
 		if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
@@ -3400,9 +3446,23 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba,
 			lpfc_sli4_fcf_rr_index_clear(phba, acqe_fcoe->index);
 			break;
 		}
+		spin_unlock_irq(&phba->hbalock);
+
+		/* If the event is not for currently used fcf do nothing */
+		if (phba->fcf.current_rec.fcf_indx != acqe_fcoe->index)
+			break;
+
+		/*
+		 * Otherwise, request the port to rediscover the entire FCF
+		 * table for a fast recovery from case that the current FCF
+		 * is no longer valid as we are not in the middle of FCF
+		 * failover process already.
+		 */
+		spin_lock_irq(&phba->hbalock);
 		/* Mark the fast failover process in progress */
 		phba->fcf.fcf_flag |= FCF_DEAD_DISC;
 		spin_unlock_irq(&phba->hbalock);
+
 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
 				"2771 Start FCF fast failover process due to "
 				"FCF DEAD event: evt_tag:x%x, fcf_index:x%x "
@@ -3422,12 +3482,16 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba,
 			 * as a link down to FCF registration.
 			 */
 			lpfc_sli4_fcf_dead_failthrough(phba);
-		} else
-			/* Handling fast FCF failover to a DEAD FCF event
-			 * is considered equalivant to receiving CVL to all
-			 * vports.
+		} else {
+			/* Reset FCF roundrobin bmask for new discovery */
+			memset(phba->fcf.fcf_rr_bmask, 0,
+			       sizeof(*phba->fcf.fcf_rr_bmask));
+			/*
+			 * Handling fast FCF failover to a DEAD FCF event is
+			 * considered equalivant to receiving CVL to all vports.
 			 */
 			lpfc_sli4_perform_all_vport_cvl(phba);
+		}
 		break;
 	case LPFC_FCOE_EVENT_TYPE_CVL:
 		lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
@@ -3502,7 +3566,13 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba,
 				 * the current registered FCF entry.
 				 */
 				lpfc_retry_pport_discovery(phba);
-			}
+			} else
+				/*
+				 * Reset FCF roundrobin bmask for new
+				 * discovery.
+				 */
+				memset(phba->fcf.fcf_rr_bmask, 0,
+				       sizeof(*phba->fcf.fcf_rr_bmask));
 		}
 		break;
 	default:
@@ -4885,6 +4955,7 @@ lpfc_create_shost(struct lpfc_hba *phba)
 	phba->fc_altov = FF_DEF_ALTOV;
 	phba->fc_arbtov = FF_DEF_ARBTOV;
 
+	atomic_set(&phba->sdev_cnt, 0);
 	vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
 	if (!vport)
 		return -ENODEV;
@@ -5533,9 +5604,12 @@ lpfc_sli4_read_config(struct lpfc_hba *phba)
 	mempool_free(pmb, phba->mbox_mem_pool);
 
 	/* Reset the DFT_HBA_Q_DEPTH to the max xri  */
-	if (phba->cfg_hba_queue_depth > (phba->sli4_hba.max_cfg_param.max_xri))
+	if (phba->cfg_hba_queue_depth >
+		(phba->sli4_hba.max_cfg_param.max_xri -
+			lpfc_sli4_get_els_iocb_cnt(phba)))
 		phba->cfg_hba_queue_depth =
-				phba->sli4_hba.max_cfg_param.max_xri;
+			phba->sli4_hba.max_cfg_param.max_xri -
+				lpfc_sli4_get_els_iocb_cnt(phba);
 	return rc;
 }
 
@@ -6993,22 +7067,28 @@ lpfc_sli_disable_intr(struct lpfc_hba *phba)
 static int
 lpfc_sli4_enable_msix(struct lpfc_hba *phba)
 {
-	int rc, index;
+	int vectors, rc, index;
 
 	/* Set up MSI-X multi-message vectors */
 	for (index = 0; index < phba->sli4_hba.cfg_eqn; index++)
 		phba->sli4_hba.msix_entries[index].entry = index;
 
 	/* Configure MSI-X capability structure */
+	vectors = phba->sli4_hba.cfg_eqn;
+enable_msix_vectors:
 	rc = pci_enable_msix(phba->pcidev, phba->sli4_hba.msix_entries,
-			     phba->sli4_hba.cfg_eqn);
-	if (rc) {
+			     vectors);
+	if (rc > 1) {
+		vectors = rc;
+		goto enable_msix_vectors;
+	} else if (rc) {
 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
 				"0484 PCI enable MSI-X failed (%d)\n", rc);
 		goto msi_fail_out;
 	}
+
 	/* Log MSI-X vector assignment */
-	for (index = 0; index < phba->sli4_hba.cfg_eqn; index++)
+	for (index = 0; index < vectors; index++)
 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
 				"0489 MSI-X entry[%d]: vector=x%x "
 				"message=%d\n", index,
@@ -7030,7 +7110,7 @@ lpfc_sli4_enable_msix(struct lpfc_hba *phba)
 	}
 
 	/* The rest of the vector(s) are associated to fast-path handler(s) */
-	for (index = 1; index < phba->sli4_hba.cfg_eqn; index++) {
+	for (index = 1; index < vectors; index++) {
 		phba->sli4_hba.fcp_eq_hdl[index - 1].idx = index - 1;
 		phba->sli4_hba.fcp_eq_hdl[index - 1].phba = phba;
 		rc = request_irq(phba->sli4_hba.msix_entries[index].vector,
@@ -7044,6 +7124,7 @@ lpfc_sli4_enable_msix(struct lpfc_hba *phba)
 			goto cfg_fail_out;
 		}
 	}
+	phba->sli4_hba.msix_vec_nr = vectors;
 
 	return rc;
 
@@ -7077,9 +7158,10 @@ lpfc_sli4_disable_msix(struct lpfc_hba *phba)
 	/* Free up MSI-X multi-message vectors */
 	free_irq(phba->sli4_hba.msix_entries[0].vector, phba);
 
-	for (index = 1; index < phba->sli4_hba.cfg_eqn; index++)
+	for (index = 1; index < phba->sli4_hba.msix_vec_nr; index++)
 		free_irq(phba->sli4_hba.msix_entries[index].vector,
 			 &phba->sli4_hba.fcp_eq_hdl[index - 1]);
+
 	/* Disable MSI-X */
 	pci_disable_msix(phba->pcidev);
 
@@ -7121,6 +7203,7 @@ lpfc_sli4_enable_msi(struct lpfc_hba *phba)
 		pci_disable_msi(phba->pcidev);
 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
 				"0490 MSI request_irq failed (%d)\n", rc);
+		return rc;
 	}
 
 	for (index = 0; index < phba->cfg_fcp_eq_count; index++) {
@@ -7128,7 +7211,7 @@ lpfc_sli4_enable_msi(struct lpfc_hba *phba)
 		phba->sli4_hba.fcp_eq_hdl[index].phba = phba;
 	}
 
-	return rc;
+	return 0;
 }
 
 /**
@@ -7839,6 +7922,9 @@ lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 			"2710 PCI channel disable preparing for reset\n");
 
+	/* Block any management I/Os to the device */
+	lpfc_block_mgmt_io(phba);
+
 	/* Block all SCSI devices' I/Os on the host */
 	lpfc_scsi_dev_block(phba);
 
@@ -7848,6 +7934,7 @@ lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
 	/* Disable interrupt and pci device */
 	lpfc_sli_disable_intr(phba);
 	pci_disable_device(phba->pcidev);
+
 	/* Flush all driver's outstanding SCSI I/Os as we are to reset */
 	lpfc_sli_flush_fcp_rings(phba);
 }
@@ -7861,7 +7948,7 @@ lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
  * pending I/Os.
  **/
 static void
-lpfc_prep_dev_for_perm_failure(struct lpfc_hba *phba)
+lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba)
 {
 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 			"2711 PCI channel permanent disable for failure\n");
@@ -7910,7 +7997,7 @@ lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)
 		return PCI_ERS_RESULT_NEED_RESET;
 	case pci_channel_io_perm_failure:
 		/* Permanent failure, prepare for device down */
-		lpfc_prep_dev_for_perm_failure(phba);
+		lpfc_sli_prep_dev_for_perm_failure(phba);
 		return PCI_ERS_RESULT_DISCONNECT;
 	default:
 		/* Unknown state, prepare and request slot reset */
@@ -7979,7 +8066,8 @@ lpfc_io_slot_reset_s3(struct pci_dev *pdev)
 	} else
 		phba->intr_mode = intr_mode;
 
-	/* Take device offline; this will perform cleanup */
+	/* Take device offline, it will perform cleanup */
+	lpfc_offline_prep(phba);
 	lpfc_offline(phba);
 	lpfc_sli_brdrestart(phba);
 
@@ -8110,8 +8198,12 @@ lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)
 	}
 
 	/* Initialize and populate the iocb list per host */
-	error = lpfc_init_iocb_list(phba,
-			phba->sli4_hba.max_cfg_param.max_xri);
+
+	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+			"2821 initialize iocb list %d.\n",
+			phba->cfg_iocb_cnt*1024);
+	error = lpfc_init_iocb_list(phba, phba->cfg_iocb_cnt*1024);
+
 	if (error) {
 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 				"1413 Failed to initialize iocb list.\n");
@@ -8160,6 +8252,8 @@ lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)
 		/* Default to single FCP EQ for non-MSI-X */
 		if (phba->intr_type != MSIX)
 			phba->cfg_fcp_eq_count = 1;
+		else if (phba->sli4_hba.msix_vec_nr < phba->cfg_fcp_eq_count)
+			phba->cfg_fcp_eq_count = phba->sli4_hba.msix_vec_nr - 1;
 		/* Set up SLI-4 HBA */
 		if (lpfc_sli4_hba_setup(phba)) {
 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
@@ -8321,7 +8415,7 @@ lpfc_pci_suspend_one_s4(struct pci_dev *pdev, pm_message_t msg)
 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
 
 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
-			"0298 PCI device Power Management suspend.\n");
+			"2843 PCI device Power Management suspend.\n");
 
 	/* Bring down the device */
 	lpfc_offline_prep(phba);
@@ -8412,6 +8506,84 @@ lpfc_pci_resume_one_s4(struct pci_dev *pdev)
 }
 
 /**
+ * lpfc_sli4_prep_dev_for_recover - Prepare SLI4 device for pci slot recover
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is called to prepare the SLI4 device for PCI slot recover. It
+ * aborts all the outstanding SCSI I/Os to the pci device.
+ **/
+static void
+lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba)
+{
+	struct lpfc_sli *psli = &phba->sli;
+	struct lpfc_sli_ring  *pring;
+
+	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+			"2828 PCI channel I/O abort preparing for recovery\n");
+	/*
+	 * There may be errored I/Os through HBA, abort all I/Os on txcmplq
+	 * and let the SCSI mid-layer to retry them to recover.
+	 */
+	pring = &psli->ring[psli->fcp_ring];
+	lpfc_sli_abort_iocb_ring(phba, pring);
+}
+
+/**
+ * lpfc_sli4_prep_dev_for_reset - Prepare SLI4 device for pci slot reset
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is called to prepare the SLI4 device for PCI slot reset. It
+ * disables the device interrupt and pci device, and aborts the internal FCP
+ * pending I/Os.
+ **/
+static void
+lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)
+{
+	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+			"2826 PCI channel disable preparing for reset\n");
+
+	/* Block any management I/Os to the device */
+	lpfc_block_mgmt_io(phba);
+
+	/* Block all SCSI devices' I/Os on the host */
+	lpfc_scsi_dev_block(phba);
+
+	/* stop all timers */
+	lpfc_stop_hba_timers(phba);
+
+	/* Disable interrupt and pci device */
+	lpfc_sli4_disable_intr(phba);
+	pci_disable_device(phba->pcidev);
+
+	/* Flush all driver's outstanding SCSI I/Os as we are to reset */
+	lpfc_sli_flush_fcp_rings(phba);
+}
+
+/**
+ * lpfc_sli4_prep_dev_for_perm_failure - Prepare SLI4 dev for pci slot disable
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is called to prepare the SLI4 device for PCI slot permanently
+ * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
+ * pending I/Os.
+ **/
+static void
+lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba)
+{
+	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+			"2827 PCI channel permanent disable for failure\n");
+
+	/* Block all SCSI devices' I/Os on the host */
+	lpfc_scsi_dev_block(phba);
+
+	/* stop all timers */
+	lpfc_stop_hba_timers(phba);
+
+	/* Clean up all driver's outstanding SCSI I/Os */
+	lpfc_sli_flush_fcp_rings(phba);
+}
+
+/**
  * lpfc_io_error_detected_s4 - Method for handling PCI I/O error to SLI-4 device
  * @pdev: pointer to PCI device.
  * @state: the current PCI connection state.
@@ -8430,7 +8602,29 @@ lpfc_pci_resume_one_s4(struct pci_dev *pdev)
 static pci_ers_result_t
 lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state)
 {
-	return PCI_ERS_RESULT_NEED_RESET;
+	struct Scsi_Host *shost = pci_get_drvdata(pdev);
+	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
+
+	switch (state) {
+	case pci_channel_io_normal:
+		/* Non-fatal error, prepare for recovery */
+		lpfc_sli4_prep_dev_for_recover(phba);
+		return PCI_ERS_RESULT_CAN_RECOVER;
+	case pci_channel_io_frozen:
+		/* Fatal error, prepare for slot reset */
+		lpfc_sli4_prep_dev_for_reset(phba);
+		return PCI_ERS_RESULT_NEED_RESET;
+	case pci_channel_io_perm_failure:
+		/* Permanent failure, prepare for device down */
+		lpfc_sli4_prep_dev_for_perm_failure(phba);
+		return PCI_ERS_RESULT_DISCONNECT;
+	default:
+		/* Unknown state, prepare and request slot reset */
+		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+				"2825 Unknown PCI error state: x%x\n", state);
+		lpfc_sli4_prep_dev_for_reset(phba);
+		return PCI_ERS_RESULT_NEED_RESET;
+	}
 }
 
 /**
@@ -8454,6 +8648,39 @@ lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state)
 static pci_ers_result_t
 lpfc_io_slot_reset_s4(struct pci_dev *pdev)
 {
+	struct Scsi_Host *shost = pci_get_drvdata(pdev);
+	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
+	struct lpfc_sli *psli = &phba->sli;
+	uint32_t intr_mode;
+
+	dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
+	if (pci_enable_device_mem(pdev)) {
+		printk(KERN_ERR "lpfc: Cannot re-enable "
+			"PCI device after reset.\n");
+		return PCI_ERS_RESULT_DISCONNECT;
+	}
+
+	pci_restore_state(pdev);
+	if (pdev->is_busmaster)
+		pci_set_master(pdev);
+
+	spin_lock_irq(&phba->hbalock);
+	psli->sli_flag &= ~LPFC_SLI_ACTIVE;
+	spin_unlock_irq(&phba->hbalock);
+
+	/* Configure and enable interrupt */
+	intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
+	if (intr_mode == LPFC_INTR_ERROR) {
+		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+				"2824 Cannot re-enable interrupt after "
+				"slot reset.\n");
+		return PCI_ERS_RESULT_DISCONNECT;
+	} else
+		phba->intr_mode = intr_mode;
+
+	/* Log the current active interrupt mode */
+	lpfc_log_intr_mode(phba, phba->intr_mode);
+
 	return PCI_ERS_RESULT_RECOVERED;
 }
 
@@ -8470,7 +8697,27 @@ lpfc_io_slot_reset_s4(struct pci_dev *pdev)
 static void
 lpfc_io_resume_s4(struct pci_dev *pdev)
 {
-	return;
+	struct Scsi_Host *shost = pci_get_drvdata(pdev);
+	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
+
+	/*
+	 * In case of slot reset, as function reset is performed through
+	 * mailbox command which needs DMA to be enabled, this operation
+	 * has to be moved to the io resume phase. Taking device offline
+	 * will perform the necessary cleanup.
+	 */
+	if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) {
+		/* Perform device reset */
+		lpfc_offline_prep(phba);
+		lpfc_offline(phba);
+		lpfc_sli_brdrestart(phba);
+		/* Bring the device back online */
+		lpfc_online(phba);
+	}
+
+	/* Clean up Advanced Error Reporting (AER) if needed */
+	if (phba->hba_flag & HBA_AER_ENABLED)
+		pci_cleanup_aer_uncorrect_error_status(pdev);
 }
 
 /**
@@ -8802,6 +9049,8 @@ static struct pci_device_id lpfc_id_table[] = {
 		PCI_ANY_ID, PCI_ANY_ID, },
 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FALCON,
 		PCI_ANY_ID, PCI_ANY_ID, },
+	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BALIUS,
+		PCI_ANY_ID, PCI_ANY_ID, },
 	{ 0 }
 };