diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 82016fc..463104d 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -507,12 +507,14 @@
 		return -ENOMEM;
 
 	memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
-	pmboxq->mb.mbxCommand = MBX_DOWN_LINK;
-	pmboxq->mb.mbxOwner = OWN_HOST;
+	pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
+	pmboxq->u.mb.mbxOwner = OWN_HOST;
 
 	mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO * 2);
 
-	if ((mbxstatus == MBX_SUCCESS) && (pmboxq->mb.mbxStatus == 0)) {
+	if ((mbxstatus == MBX_SUCCESS) &&
+	    (pmboxq->u.mb.mbxStatus == 0 ||
+	     pmboxq->u.mb.mbxStatus == MBXERR_LINK_DOWN)) {
 		memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
 		lpfc_init_link(phba, pmboxq, phba->cfg_topology,
 			       phba->cfg_link_speed);
@@ -791,7 +793,8 @@
 		  uint32_t *mrpi, uint32_t *arpi,
 		  uint32_t *mvpi, uint32_t *avpi)
 {
-	struct lpfc_sli   *psli = &phba->sli;
+	struct lpfc_sli *psli = &phba->sli;
+	struct lpfc_mbx_read_config *rd_config;
 	LPFC_MBOXQ_t *pmboxq;
 	MAILBOX_t *pmb;
 	int rc = 0;
@@ -813,7 +816,7 @@
 		return 0;
 	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
 
-	pmb = &pmboxq->mb;
+	pmb = &pmboxq->u.mb;
 	pmb->mbxCommand = MBX_READ_CONFIG;
 	pmb->mbxOwner = OWN_HOST;
 	pmboxq->context1 = NULL;
@@ -3247,7 +3250,7 @@
 		}
 	}
 
-	memcpy((uint8_t *) & phba->sysfs_mbox.mbox->mb + off,
+	memcpy((uint8_t *) &phba->sysfs_mbox.mbox->u.mb + off,
 	       buf, count);
 
 	phba->sysfs_mbox.offset = off + count;
@@ -3289,6 +3292,7 @@
 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 	struct lpfc_hba   *phba = vport->phba;
 	int rc;
+	MAILBOX_t *pmb;
 
 	if (off > MAILBOX_CMD_SIZE)
 		return -ERANGE;
@@ -3313,8 +3317,8 @@
 	if (off == 0 &&
 	    phba->sysfs_mbox.state  == SMBOX_WRITING &&
 	    phba->sysfs_mbox.offset >= 2 * sizeof(uint32_t)) {
-
-		switch (phba->sysfs_mbox.mbox->mb.mbxCommand) {
+		pmb = &phba->sysfs_mbox.mbox->u.mb;
+		switch (pmb->mbxCommand) {
 			/* Offline only */
 		case MBX_INIT_LINK:
 		case MBX_DOWN_LINK:
@@ -3331,7 +3335,7 @@
 			if (!(vport->fc_flag & FC_OFFLINE_MODE)) {
 				printk(KERN_WARNING "mbox_read:Command 0x%x "
 				       "is illegal in on-line state\n",
-				       phba->sysfs_mbox.mbox->mb.mbxCommand);
+				       pmb->mbxCommand);
 				sysfs_mbox_idle(phba);
 				spin_unlock_irq(&phba->hbalock);
 				return -EPERM;
@@ -3367,13 +3371,13 @@
 		case MBX_CONFIG_PORT:
 		case MBX_RUN_BIU_DIAG:
 			printk(KERN_WARNING "mbox_read: Illegal Command 0x%x\n",
-			       phba->sysfs_mbox.mbox->mb.mbxCommand);
+			       pmb->mbxCommand);
 			sysfs_mbox_idle(phba);
 			spin_unlock_irq(&phba->hbalock);
 			return -EPERM;
 		default:
 			printk(KERN_WARNING "mbox_read: Unknown Command 0x%x\n",
-			       phba->sysfs_mbox.mbox->mb.mbxCommand);
+			       pmb->mbxCommand);
 			sysfs_mbox_idle(phba);
 			spin_unlock_irq(&phba->hbalock);
 			return -EPERM;
@@ -3383,14 +3387,14 @@
 		 * or RESTART mailbox commands until the HBA is restarted.
 		 */
 		if (phba->pport->stopped &&
-		    phba->sysfs_mbox.mbox->mb.mbxCommand != MBX_DUMP_MEMORY &&
-		    phba->sysfs_mbox.mbox->mb.mbxCommand != MBX_RESTART &&
-		    phba->sysfs_mbox.mbox->mb.mbxCommand != MBX_WRITE_VPARMS &&
-		    phba->sysfs_mbox.mbox->mb.mbxCommand != MBX_WRITE_WWN)
+		    pmb->mbxCommand != MBX_DUMP_MEMORY &&
+		    pmb->mbxCommand != MBX_RESTART &&
+		    pmb->mbxCommand != MBX_WRITE_VPARMS &&
+		    pmb->mbxCommand != MBX_WRITE_WWN)
 			lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
 					"1259 mbox: Issued mailbox cmd "
 					"0x%x while in stopped state.\n",
-					phba->sysfs_mbox.mbox->mb.mbxCommand);
+					pmb->mbxCommand);
 
 		phba->sysfs_mbox.mbox->vport = vport;
 
@@ -3416,8 +3420,7 @@
 			spin_unlock_irq(&phba->hbalock);
 			rc = lpfc_sli_issue_mbox_wait (phba,
 						       phba->sysfs_mbox.mbox,
-				lpfc_mbox_tmo_val(phba,
-				    phba->sysfs_mbox.mbox->mb.mbxCommand) * HZ);
+				lpfc_mbox_tmo_val(phba, pmb->mbxCommand) * HZ);
 			spin_lock_irq(&phba->hbalock);
 		}
 
@@ -3439,7 +3442,7 @@
 		return -EAGAIN;
 	}
 
-	memcpy(buf, (uint8_t *) & phba->sysfs_mbox.mbox->mb + off, count);
+	memcpy(buf, (uint8_t *) &pmb + off, count);
 
 	phba->sysfs_mbox.offset = off + count;
 
@@ -3711,14 +3714,14 @@
 		return NULL;
 	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
 
-	pmb = &pmboxq->mb;
+	pmb = &pmboxq->u.mb;
 	pmb->mbxCommand = MBX_READ_STATUS;
 	pmb->mbxOwner = OWN_HOST;
 	pmboxq->context1 = NULL;
 	pmboxq->vport = vport;
 
 	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
-		(!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
+		(!(psli->sli_flag & LPFC_SLI_ACTIVE)))
 		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
 	else
 		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
@@ -3817,7 +3820,7 @@
 		return;
 	memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
 
-	pmb = &pmboxq->mb;
+	pmb = &pmboxq->u.mb;
 	pmb->mbxCommand = MBX_READ_STATUS;
 	pmb->mbxOwner = OWN_HOST;
 	pmb->un.varWords[0] = 0x1; /* reset request */
diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h
index 3802e45..e0f1cd4 100644
--- a/drivers/scsi/lpfc/lpfc_crtn.h
+++ b/drivers/scsi/lpfc/lpfc_crtn.h
@@ -209,6 +209,7 @@
 uint16_t lpfc_sli_next_iotag(struct lpfc_hba *, struct lpfc_iocbq *);
 void lpfc_sli_cancel_iocbs(struct lpfc_hba *, struct list_head *, uint32_t,
 			   uint32_t);
+void lpfc_sli_wake_mbox_wait(struct lpfc_hba *, LPFC_MBOXQ_t *);
 
 void lpfc_reset_barrier(struct lpfc_hba * phba);
 int lpfc_sli_brdready(struct lpfc_hba *, uint32_t);
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index 9fe36bf..2c034a5 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -4277,7 +4277,7 @@
 			lpfc_init_link(phba, mbox,
 				       phba->cfg_topology,
 				       phba->cfg_link_speed);
-			mbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
+			mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
 			mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 			mbox->vport = vport;
 			rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
@@ -4426,7 +4426,7 @@
 	uint16_t xri, status;
 	uint32_t cmdsize;
 
-	mb = &pmb->mb;
+	mb = &pmb->u.mb;
 
 	ndlp = (struct lpfc_nodelist *) pmb->context2;
 	xri = (uint16_t) ((unsigned long)(pmb->context1));
@@ -5755,7 +5755,7 @@
 	struct lpfc_vport *vport = pmb->vport;
 	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 
 	spin_lock_irq(shost->host_lock);
 	vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index 0fc6600..2270d9a 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -879,7 +879,7 @@
 	struct lpfc_vport *vport = pmb->vport;
 	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 	struct lpfc_sli   *psli = &phba->sli;
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 	uint32_t control;
 
 	/* Since we don't do discovery right now, turn these off here */
@@ -942,7 +942,7 @@
 {
 	struct lpfc_vport *vport = pmb->vport;
 
-	if (pmb->mb.mbxStatus)
+	if (pmb->u.mb.mbxStatus)
 		goto out;
 
 	mempool_free(pmb, phba->mbox_mem_pool);
@@ -970,7 +970,7 @@
 	lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
 			 "0306 CONFIG_LINK mbxStatus error x%x "
 			 "HBA state x%x\n",
-			 pmb->mb.mbxStatus, vport->port_state);
+			 pmb->u.mb.mbxStatus, vport->port_state);
 	mempool_free(pmb, phba->mbox_mem_pool);
 
 	lpfc_linkdown(phba);
@@ -1202,7 +1202,7 @@
 	struct lpfc_vport *vport = pmb->vport;
 	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 	READ_LA_VAR *la;
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 	struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
 
 	/* Unblock ELS traffic */
@@ -1217,7 +1217,7 @@
 		goto lpfc_mbx_cmpl_read_la_free_mbuf;
 	}
 
-	la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
+	la = (READ_LA_VAR *) &pmb->u.mb.un.varReadLA;
 
 	memcpy(&phba->alpa_map[0], mp->virt, 128);
 
@@ -1355,7 +1355,7 @@
 static void
 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 	struct lpfc_vport *vport = pmb->vport;
 	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 
@@ -1408,7 +1408,7 @@
 {
 	struct lpfc_vport *vport = pmb->vport;
 	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 
 	switch (mb->mbxStatus) {
 	case 0x0011:
@@ -2279,7 +2279,7 @@
 
 	/* cleanup any ndlp on mbox q waiting for reglogin cmpl */
 	if ((mb = phba->sli.mbox_active)) {
-		if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
+		if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
 		   (ndlp == (struct lpfc_nodelist *) mb->context2)) {
 			mb->context2 = NULL;
 			mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
@@ -2288,7 +2288,7 @@
 
 	spin_lock_irq(&phba->hbalock);
 	list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
-		if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
+		if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
 		    (ndlp == (struct lpfc_nodelist *) mb->context2)) {
 			mp = (struct lpfc_dmabuf *) (mb->context1);
 			if (mp) {
@@ -2970,7 +2970,7 @@
 		lpfc_linkdown(phba);
 		lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
 			       phba->cfg_link_speed);
-		initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
+		initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
 		initlinkmbox->vport = vport;
 		initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 		rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
@@ -3069,7 +3069,7 @@
 void
 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 	struct lpfc_dmabuf   *mp = (struct lpfc_dmabuf *) (pmb->context1);
 	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
 	struct lpfc_vport    *vport = pmb->vport;
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index e9e4a1d..ff821bb 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -108,7 +108,7 @@
 		return -ENOMEM;
 	}
 
-	mb = &pmb->mb;
+	mb = &pmb->u.mb;
 	phba->link_state = LPFC_INIT_MBX_CMDS;
 
 	if (lpfc_is_LC_HBA(phba->pcidev->device)) {
@@ -221,6 +221,11 @@
 					mb->mbxCommand, mb->mbxStatus);
 			mb->un.varDmp.word_cnt = 0;
 		}
+		/* dump mem may return a zero when finished or we got a
+		 * mailbox error, either way we are done.
+		 */
+		if (mb->un.varDmp.word_cnt == 0)
+			break;
 		if (mb->un.varDmp.word_cnt > DMP_VPD_SIZE - offset)
 			mb->un.varDmp.word_cnt = DMP_VPD_SIZE - offset;
 		lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
@@ -249,7 +254,7 @@
 static void
 lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
 {
-	if (pmboxq->mb.mbxStatus == MBX_SUCCESS)
+	if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS)
 		phba->temp_sensor_support = 1;
 	else
 		phba->temp_sensor_support = 0;
@@ -276,7 +281,7 @@
 	/* character array used for decoding dist type. */
 	char dist_char[] = "nabx";
 
-	if (pmboxq->mb.mbxStatus != MBX_SUCCESS) {
+	if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) {
 		mempool_free(pmboxq, phba->mbox_mem_pool);
 		return;
 	}
@@ -284,7 +289,7 @@
 	prg = (struct prog_id *) &prog_id_word;
 
 	/* word 7 contain option rom version */
-	prog_id_word = pmboxq->mb.un.varWords[7];
+	prog_id_word = pmboxq->u.mb.un.varWords[7];
 
 	/* Decode the Option rom version word to a readable string */
 	if (prg->dist < 4)
@@ -341,7 +346,7 @@
 		phba->link_state = LPFC_HBA_ERROR;
 		return -ENOMEM;
 	}
-	mb = &pmb->mb;
+	mb = &pmb->u.mb;
 
 	/* Get login parameters for NID.  */
 	lpfc_read_sparam(phba, pmb, 0);
@@ -476,17 +481,18 @@
 			lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 					"0352 Config MSI mailbox command "
 					"failed, mbxCmd x%x, mbxStatus x%x\n",
-					pmb->mb.mbxCommand, pmb->mb.mbxStatus);
+					pmb->u.mb.mbxCommand,
+					pmb->u.mb.mbxStatus);
 			mempool_free(pmb, phba->mbox_mem_pool);
 			return -EIO;
 		}
 	}
 
+	spin_lock_irq(&phba->hbalock);
 	/* Initialize ERATT handling flag */
 	phba->hba_flag &= ~HBA_ERATT_HANDLED;
 
 	/* Enable appropriate host interrupts */
-	spin_lock_irq(&phba->hbalock);
 	status = readl(phba->HCregaddr);
 	status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
 	if (psli->num_rings > 0)
@@ -2201,7 +2207,7 @@
 	}
 	lpfc_destroy_vport_work_array(phba, vports);
 
-	lpfc_sli_flush_mbox_queue(phba);
+	lpfc_sli_mbox_sys_shutdown(phba);
 }
 
 /**
diff --git a/drivers/scsi/lpfc/lpfc_mbox.c b/drivers/scsi/lpfc/lpfc_mbox.c
index 7f5899b..6aeb1c6 100644
--- a/drivers/scsi/lpfc/lpfc_mbox.c
+++ b/drivers/scsi/lpfc/lpfc_mbox.c
@@ -60,7 +60,7 @@
 	MAILBOX_t *mb;
 	void *ctx;
 
-	mb = &pmb->mb;
+	mb = &pmb->u.mb;
 	ctx = pmb->context2;
 
 	/* Setup to dump VPD region */
@@ -92,7 +92,7 @@
 	MAILBOX_t *mb;
 	void *ctx;
 
-	mb = &pmb->mb;
+	mb = &pmb->u.mb;
 	/* Save context so that we can restore after memset */
 	ctx = pmb->context2;
 
@@ -127,7 +127,7 @@
 {
 	MAILBOX_t *mb;
 
-	mb = &pmb->mb;
+	mb = &pmb->u.mb;
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 	mb->mbxCommand = MBX_READ_NV;
 	mb->mbxOwner = OWN_HOST;
@@ -153,7 +153,7 @@
 {
 	MAILBOX_t *mb;
 
-	mb = &pmb->mb;
+	mb = &pmb->u.mb;
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 	mb->mbxCommand = MBX_ASYNCEVT_ENABLE;
 	mb->un.varCfgAsyncEvent.ring = ring;
@@ -179,7 +179,7 @@
 {
 	MAILBOX_t *mb;
 
-	mb = &pmb->mb;
+	mb = &pmb->u.mb;
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 	mb->mbxCommand = MBX_HEARTBEAT;
 	mb->mbxOwner = OWN_HOST;
@@ -213,7 +213,7 @@
 	struct lpfc_sli *psli;
 
 	psli = &phba->sli;
-	mb = &pmb->mb;
+	mb = &pmb->u.mb;
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 
 	INIT_LIST_HEAD(&mp->list);
@@ -250,7 +250,7 @@
 {
 	MAILBOX_t *mb;
 
-	mb = &pmb->mb;
+	mb = &pmb->u.mb;
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 
 	mb->un.varClearLA.eventTag = phba->fc_eventTag;
@@ -277,7 +277,7 @@
 lpfc_config_link(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 {
 	struct lpfc_vport  *vport = phba->pport;
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 
 	/* NEW_FEATURE
@@ -323,7 +323,7 @@
 int
 lpfc_config_msi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 	uint32_t attentionConditions[2];
 
 	/* Sanity check */
@@ -407,7 +407,7 @@
 	struct lpfc_sli *psli;
 	MAILBOX_t *mb;
 
-	mb = &pmb->mb;
+	mb = &pmb->u.mb;
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 
 	psli = &phba->sli;
@@ -494,7 +494,7 @@
 	struct lpfc_sli *psli;
 
 	psli = &phba->sli;
-	mb = &pmb->mb;
+	mb = &pmb->u.mb;
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 
 	mb->mbxOwner = OWN_HOST;
@@ -517,7 +517,7 @@
 	mb->un.varRdSparm.un.sp64.tus.f.bdeSize = sizeof (struct serv_parm);
 	mb->un.varRdSparm.un.sp64.addrHigh = putPaddrHigh(mp->phys);
 	mb->un.varRdSparm.un.sp64.addrLow = putPaddrLow(mp->phys);
-	mb->un.varRdSparm.vpi = vpi;
+	mb->un.varRdSparm.vpi = vpi + phba->vpi_base;
 
 	/* save address for completion */
 	pmb->context1 = mp;
@@ -546,10 +546,12 @@
 {
 	MAILBOX_t *mb;
 
-	mb = &pmb->mb;
+	mb = &pmb->u.mb;
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 
 	mb->un.varUnregDID.did = did;
+	if (vpi != 0xffff)
+		vpi += phba->vpi_base;
 	mb->un.varUnregDID.vpi = vpi;
 
 	mb->mbxCommand = MBX_UNREG_D_ID;
@@ -575,7 +577,7 @@
 {
 	MAILBOX_t *mb;
 
-	mb = &pmb->mb;
+	mb = &pmb->u.mb;
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 
 	mb->mbxCommand = MBX_READ_CONFIG;
@@ -600,7 +602,7 @@
 {
 	MAILBOX_t *mb;
 
-	mb = &pmb->mb;
+	mb = &pmb->u.mb;
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 
 	mb->mbxCommand = MBX_READ_LNK_STAT;
@@ -609,7 +611,7 @@
 }
 
 /**
- * lpfc_reg_login - Prepare a mailbox command for registering remote login
+ * lpfc_reg_rpi - Prepare a mailbox command for registering remote login
  * @phba: pointer to lpfc hba data structure.
  * @vpi: virtual N_Port identifier.
  * @did: remote port identifier.
@@ -633,17 +635,23 @@
  *    1 - DMA memory allocation failed
  **/
 int
-lpfc_reg_login(struct lpfc_hba *phba, uint16_t vpi, uint32_t did,
+lpfc_reg_rpi(struct lpfc_hba *phba, uint16_t vpi, uint32_t did,
 	       uint8_t *param, LPFC_MBOXQ_t *pmb, uint32_t flag)
 {
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 	uint8_t *sparam;
 	struct lpfc_dmabuf *mp;
 
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 
 	mb->un.varRegLogin.rpi = 0;
-	mb->un.varRegLogin.vpi = vpi;
+	if (phba->sli_rev == LPFC_SLI_REV4) {
+		mb->un.varRegLogin.rpi = lpfc_sli4_alloc_rpi(phba);
+		if (mb->un.varRegLogin.rpi == LPFC_RPI_ALLOC_ERROR)
+			return 1;
+	}
+
+	mb->un.varRegLogin.vpi = vpi + phba->vpi_base;
 	mb->un.varRegLogin.did = did;
 	mb->un.varWords[30] = flag;	/* Set flag to issue action on cmpl */
 
@@ -699,15 +707,16 @@
 {
 	MAILBOX_t *mb;
 
-	mb = &pmb->mb;
+	mb = &pmb->u.mb;
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 
 	mb->un.varUnregLogin.rpi = (uint16_t) rpi;
 	mb->un.varUnregLogin.rsvd1 = 0;
-	mb->un.varUnregLogin.vpi = vpi;
+	mb->un.varUnregLogin.vpi = vpi + phba->vpi_base;
 
 	mb->mbxCommand = MBX_UNREG_LOGIN;
 	mb->mbxOwner = OWN_HOST;
+
 	return;
 }
 
@@ -727,15 +736,15 @@
  * This routine prepares the mailbox command for registering a virtual N_Port.
  **/
 void
-lpfc_reg_vpi(struct lpfc_hba *phba, uint16_t vpi, uint32_t sid,
-	     LPFC_MBOXQ_t *pmb)
+lpfc_reg_vpi(struct lpfc_vport *vport, LPFC_MBOXQ_t *pmb)
 {
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 
-	mb->un.varRegVpi.vpi = vpi;
-	mb->un.varRegVpi.sid = sid;
+	mb->un.varRegVpi.vpi = vport->vpi + vport->phba->vpi_base;
+	mb->un.varRegVpi.sid = vport->fc_myDID;
+	mb->un.varRegVpi.vfi = vport->vfi + vport->phba->vfi_base;
 
 	mb->mbxCommand = MBX_REG_VPI;
 	mb->mbxOwner = OWN_HOST;
@@ -762,10 +771,10 @@
 void
 lpfc_unreg_vpi(struct lpfc_hba *phba, uint16_t vpi, LPFC_MBOXQ_t *pmb)
 {
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 
-	mb->un.varUnregVpi.vpi = vpi;
+	mb->un.varUnregVpi.vpi = vpi + phba->vpi_base;
 
 	mb->mbxCommand = MBX_UNREG_VPI;
 	mb->mbxOwner = OWN_HOST;
@@ -854,7 +863,7 @@
 void
 lpfc_read_rev(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 {
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 	mb->un.varRdRev.cv = 1;
 	mb->un.varRdRev.v3req = 1; /* Request SLI3 info */
@@ -947,7 +956,7 @@
 		uint32_t hbq_entry_index, LPFC_MBOXQ_t *pmb)
 {
 	int i;
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 	struct config_hbq_var *hbqmb = &mb->un.varCfgHbq;
 
 	memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
@@ -1022,7 +1031,7 @@
 lpfc_config_ring(struct lpfc_hba * phba, int ring, LPFC_MBOXQ_t * pmb)
 {
 	int i;
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 	struct lpfc_sli *psli;
 	struct lpfc_sli_ring *pring;
 
@@ -1077,7 +1086,7 @@
 lpfc_config_port(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
 	MAILBOX_t __iomem *mb_slim = (MAILBOX_t __iomem *) phba->MBslimaddr;
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 	dma_addr_t pdma_addr;
 	uint32_t bar_low, bar_high;
 	size_t offset;
@@ -1101,21 +1110,22 @@
 
 	/* If HBA supports SLI=3 ask for it */
 
-	if (phba->sli_rev == 3 && phba->vpd.sli3Feat.cerbm) {
+	if (phba->sli_rev == LPFC_SLI_REV3 && phba->vpd.sli3Feat.cerbm) {
 		if (phba->cfg_enable_bg)
 			mb->un.varCfgPort.cbg = 1; /* configure BlockGuard */
+		mb->un.varCfgPort.cdss = 1; /* Configure Security */
 		mb->un.varCfgPort.cerbm = 1; /* Request HBQs */
 		mb->un.varCfgPort.ccrp = 1; /* Command Ring Polling */
 		mb->un.varCfgPort.cinb = 1; /* Interrupt Notification Block */
 		mb->un.varCfgPort.max_hbq = lpfc_sli_hbq_count();
 		if (phba->max_vpi && phba->cfg_enable_npiv &&
 		    phba->vpd.sli3Feat.cmv) {
-			mb->un.varCfgPort.max_vpi = phba->max_vpi;
+			mb->un.varCfgPort.max_vpi = LPFC_MAX_VPI;
 			mb->un.varCfgPort.cmv = 1;
 		} else
 			mb->un.varCfgPort.max_vpi = phba->max_vpi = 0;
 	} else
-		phba->sli_rev = 2;
+		phba->sli_rev = LPFC_SLI_REV2;
 	mb->un.varCfgPort.sli_mode = phba->sli_rev;
 
 	/* Now setup pcb */
@@ -1247,7 +1257,7 @@
 void
 lpfc_kill_board(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 {
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 
 	memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
 	mb->mbxCommand = MBX_KILL_BOARD;
@@ -1307,29 +1317,98 @@
 }
 
 /**
+ * __lpfc_mbox_cmpl_put - Put mailbox cmd into mailbox cmd complete list
+ * @phba: pointer to lpfc hba data structure.
+ * @mbq: pointer to the driver internal queue element for mailbox command.
+ *
+ * This routine put the completed mailbox command into the mailbox command
+ * complete list. This is the unlocked version of the routine. The mailbox
+ * complete list is used by the driver worker thread to process mailbox
+ * complete callback functions outside the driver interrupt handler.
+ **/
+void
+__lpfc_mbox_cmpl_put(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbq)
+{
+	list_add_tail(&mbq->list, &phba->sli.mboxq_cmpl);
+}
+
+/**
  * lpfc_mbox_cmpl_put - Put mailbox command into mailbox command complete list
  * @phba: pointer to lpfc hba data structure.
  * @mbq: pointer to the driver internal queue element for mailbox command.
  *
  * This routine put the completed mailbox command into the mailbox command
- * complete list. This routine is called from driver interrupt handler
- * context.The mailbox complete list is used by the driver worker thread
- * to process mailbox complete callback functions outside the driver interrupt
- * handler.
+ * complete list. This is the locked version of the routine. The mailbox
+ * complete list is used by the driver worker thread to process mailbox
+ * complete callback functions outside the driver interrupt handler.
  **/
 void
-lpfc_mbox_cmpl_put(struct lpfc_hba * phba, LPFC_MBOXQ_t * mbq)
+lpfc_mbox_cmpl_put(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbq)
 {
 	unsigned long iflag;
 
 	/* This function expects to be called from interrupt context */
 	spin_lock_irqsave(&phba->hbalock, iflag);
-	list_add_tail(&mbq->list, &phba->sli.mboxq_cmpl);
+	__lpfc_mbox_cmpl_put(phba, mbq);
 	spin_unlock_irqrestore(&phba->hbalock, iflag);
 	return;
 }
 
 /**
+ * lpfc_mbox_cmd_check - Check the validality of a mailbox command
+ * @phba: pointer to lpfc hba data structure.
+ * @mboxq: pointer to the driver internal queue element for mailbox command.
+ *
+ * This routine is to check whether a mailbox command is valid to be issued.
+ * This check will be performed by both the mailbox issue API when a client
+ * is to issue a mailbox command to the mailbox transport.
+ *
+ * Return 0 - pass the check, -ENODEV - fail the check
+ **/
+int
+lpfc_mbox_cmd_check(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
+{
+	/* Mailbox command that have a completion handler must also have a
+	 * vport specified.
+	 */
+	if (mboxq->mbox_cmpl && mboxq->mbox_cmpl != lpfc_sli_def_mbox_cmpl &&
+	    mboxq->mbox_cmpl != lpfc_sli_wake_mbox_wait) {
+		if (!mboxq->vport) {
+			lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_VPORT,
+					"1814 Mbox x%x failed, no vport\n",
+					mboxq->u.mb.mbxCommand);
+			dump_stack();
+			return -ENODEV;
+		}
+	}
+	return 0;
+}
+
+/**
+ * lpfc_mbox_dev_check - Check the device state for issuing a mailbox command
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is to check whether the HBA device is ready for posting a
+ * mailbox command. It is used by the mailbox transport API at the time the
+ * to post a mailbox command to the device.
+ *
+ * Return 0 - pass the check, -ENODEV - fail the check
+ **/
+int
+lpfc_mbox_dev_check(struct lpfc_hba *phba)
+{
+	/* If the PCI channel is in offline state, do not issue mbox */
+	if (unlikely(pci_channel_offline(phba->pcidev)))
+		return -ENODEV;
+
+	/* If the HBA is in error state, do not issue mbox */
+	if (phba->link_state == LPFC_HBA_ERROR)
+		return -ENODEV;
+
+	return 0;
+}
+
+/**
  * lpfc_mbox_tmo_val - Retrieve mailbox command timeout value
  * @phba: pointer to lpfc hba data structure.
  * @cmd: mailbox command code.
@@ -1352,6 +1431,475 @@
 	case MBX_WRITE_WWN:     /* 0x98 */
 	case MBX_LOAD_EXP_ROM:	/* 0x9C */
 		return LPFC_MBOX_TMO_FLASH_CMD;
+	case MBX_SLI4_CONFIG:	/* 0x9b */
+		return LPFC_MBOX_SLI4_CONFIG_TMO;
 	}
 	return LPFC_MBOX_TMO;
 }
+
+/**
+ * lpfc_sli4_mbx_sge_set - Set a sge entry in non-embedded mailbox command
+ * @mbox: pointer to lpfc mbox command.
+ * @sgentry: sge entry index.
+ * @phyaddr: physical address for the sge
+ * @length: Length of the sge.
+ *
+ * This routine sets up an entry in the non-embedded mailbox command at the sge
+ * index location.
+ **/
+void
+lpfc_sli4_mbx_sge_set(struct lpfcMboxq *mbox, uint32_t sgentry,
+		      dma_addr_t phyaddr, uint32_t length)
+{
+	struct lpfc_mbx_nembed_cmd *nembed_sge;
+
+	nembed_sge = (struct lpfc_mbx_nembed_cmd *)
+				&mbox->u.mqe.un.nembed_cmd;
+	nembed_sge->sge[sgentry].pa_lo = putPaddrLow(phyaddr);
+	nembed_sge->sge[sgentry].pa_hi = putPaddrHigh(phyaddr);
+	nembed_sge->sge[sgentry].length = length;
+}
+
+/**
+ * lpfc_sli4_mbx_sge_get - Get a sge entry from non-embedded mailbox command
+ * @mbox: pointer to lpfc mbox command.
+ * @sgentry: sge entry index.
+ *
+ * This routine gets an entry from the non-embedded mailbox command at the sge
+ * index location.
+ **/
+void
+lpfc_sli4_mbx_sge_get(struct lpfcMboxq *mbox, uint32_t sgentry,
+		      struct lpfc_mbx_sge *sge)
+{
+	struct lpfc_mbx_nembed_cmd *nembed_sge;
+
+	nembed_sge = (struct lpfc_mbx_nembed_cmd *)
+				&mbox->u.mqe.un.nembed_cmd;
+	sge->pa_lo = nembed_sge->sge[sgentry].pa_lo;
+	sge->pa_hi = nembed_sge->sge[sgentry].pa_hi;
+	sge->length = nembed_sge->sge[sgentry].length;
+}
+
+/**
+ * lpfc_sli4_mbox_cmd_free - Free a sli4 mailbox command
+ * @phba: pointer to lpfc hba data structure.
+ * @mbox: pointer to lpfc mbox command.
+ *
+ * This routine frees SLI4 specific mailbox command for sending IOCTL command.
+ **/
+void
+lpfc_sli4_mbox_cmd_free(struct lpfc_hba *phba, struct lpfcMboxq *mbox)
+{
+	struct lpfc_mbx_sli4_config *sli4_cfg;
+	struct lpfc_mbx_sge sge;
+	dma_addr_t phyaddr;
+	uint32_t sgecount, sgentry;
+
+	sli4_cfg = &mbox->u.mqe.un.sli4_config;
+
+	/* For embedded mbox command, just free the mbox command */
+	if (bf_get(lpfc_mbox_hdr_emb, &sli4_cfg->header.cfg_mhdr)) {
+		mempool_free(mbox, phba->mbox_mem_pool);
+		return;
+	}
+
+	/* For non-embedded mbox command, we need to free the pages first */
+	sgecount = bf_get(lpfc_mbox_hdr_sge_cnt, &sli4_cfg->header.cfg_mhdr);
+	/* There is nothing we can do if there is no sge address array */
+	if (unlikely(!mbox->sge_array)) {
+		mempool_free(mbox, phba->mbox_mem_pool);
+		return;
+	}
+	/* Each non-embedded DMA memory was allocated in the length of a page */
+	for (sgentry = 0; sgentry < sgecount; sgentry++) {
+		lpfc_sli4_mbx_sge_get(mbox, sgentry, &sge);
+		phyaddr = getPaddr(sge.pa_hi, sge.pa_lo);
+		dma_free_coherent(&phba->pcidev->dev, PAGE_SIZE,
+				  mbox->sge_array->addr[sgentry], phyaddr);
+	}
+	/* Free the sge address array memory */
+	kfree(mbox->sge_array);
+	/* Finally, free the mailbox command itself */
+	mempool_free(mbox, phba->mbox_mem_pool);
+}
+
+/**
+ * lpfc_sli4_config - Initialize the  SLI4 Config Mailbox command
+ * @phba: pointer to lpfc hba data structure.
+ * @mbox: pointer to lpfc mbox command.
+ * @subsystem: The sli4 config sub mailbox subsystem.
+ * @opcode: The sli4 config sub mailbox command opcode.
+ * @length: Length of the sli4 config mailbox command.
+ *
+ * This routine sets up the header fields of SLI4 specific mailbox command
+ * for sending IOCTL command.
+ *
+ * Return: the actual length of the mbox command allocated (mostly useful
+ *         for none embedded mailbox command).
+ **/
+int
+lpfc_sli4_config(struct lpfc_hba *phba, struct lpfcMboxq *mbox,
+		 uint8_t subsystem, uint8_t opcode, uint32_t length, bool emb)
+{
+	struct lpfc_mbx_sli4_config *sli4_config;
+	union lpfc_sli4_cfg_shdr *cfg_shdr = NULL;
+	uint32_t alloc_len;
+	uint32_t resid_len;
+	uint32_t pagen, pcount;
+	void *viraddr;
+	dma_addr_t phyaddr;
+
+	/* Set up SLI4 mailbox command header fields */
+	memset(mbox, 0, sizeof(*mbox));
+	bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_SLI4_CONFIG);
+
+	/* Set up SLI4 ioctl command header fields */
+	sli4_config = &mbox->u.mqe.un.sli4_config;
+
+	/* Setup for the embedded mbox command */
+	if (emb) {
+		/* Set up main header fields */
+		bf_set(lpfc_mbox_hdr_emb, &sli4_config->header.cfg_mhdr, 1);
+		sli4_config->header.cfg_mhdr.payload_length =
+					LPFC_MBX_CMD_HDR_LENGTH + length;
+		/* Set up sub-header fields following main header */
+		bf_set(lpfc_mbox_hdr_opcode,
+			&sli4_config->header.cfg_shdr.request, opcode);
+		bf_set(lpfc_mbox_hdr_subsystem,
+			&sli4_config->header.cfg_shdr.request, subsystem);
+		sli4_config->header.cfg_shdr.request.request_length = length;
+		return length;
+	}
+
+	/* Setup for the none-embedded mbox command */
+	pcount = (PAGE_ALIGN(length))/PAGE_SIZE;
+	pcount = (pcount > LPFC_SLI4_MBX_SGE_MAX_PAGES) ?
+				LPFC_SLI4_MBX_SGE_MAX_PAGES : pcount;
+	/* Allocate record for keeping SGE virtual addresses */
+	mbox->sge_array = kmalloc(sizeof(struct lpfc_mbx_nembed_sge_virt),
+				  GFP_KERNEL);
+	if (!mbox->sge_array)
+		return 0;
+
+	for (pagen = 0, alloc_len = 0; pagen < pcount; pagen++) {
+		/* The DMA memory is always allocated in the length of a
+		 * page even though the last SGE might not fill up to a
+		 * page, this is used as a priori size of PAGE_SIZE for
+		 * the later DMA memory free.
+		 */
+		viraddr = dma_alloc_coherent(&phba->pcidev->dev, PAGE_SIZE,
+					     &phyaddr, GFP_KERNEL);
+		/* In case of malloc fails, proceed with whatever we have */
+		if (!viraddr)
+			break;
+		mbox->sge_array->addr[pagen] = viraddr;
+		/* Keep the first page for later sub-header construction */
+		if (pagen == 0)
+			cfg_shdr = (union lpfc_sli4_cfg_shdr *)viraddr;
+		resid_len = length - alloc_len;
+		if (resid_len > PAGE_SIZE) {
+			lpfc_sli4_mbx_sge_set(mbox, pagen, phyaddr,
+					      PAGE_SIZE);
+			alloc_len += PAGE_SIZE;
+		} else {
+			lpfc_sli4_mbx_sge_set(mbox, pagen, phyaddr,
+					      resid_len);
+			alloc_len = length;
+		}
+	}
+
+	/* Set up main header fields in mailbox command */
+	sli4_config->header.cfg_mhdr.payload_length = alloc_len;
+	bf_set(lpfc_mbox_hdr_sge_cnt, &sli4_config->header.cfg_mhdr, pagen);
+
+	/* Set up sub-header fields into the first page */
+	if (pagen > 0) {
+		bf_set(lpfc_mbox_hdr_opcode, &cfg_shdr->request, opcode);
+		bf_set(lpfc_mbox_hdr_subsystem, &cfg_shdr->request, subsystem);
+		cfg_shdr->request.request_length =
+				alloc_len - sizeof(union  lpfc_sli4_cfg_shdr);
+	}
+	/* The sub-header is in DMA memory, which needs endian converstion */
+	lpfc_sli_pcimem_bcopy(cfg_shdr, cfg_shdr,
+			      sizeof(union  lpfc_sli4_cfg_shdr));
+
+	return alloc_len;
+}
+
+/**
+ * lpfc_sli4_mbox_opcode_get - Get the opcode from a sli4 mailbox command
+ * @phba: pointer to lpfc hba data structure.
+ * @mbox: pointer to lpfc mbox command.
+ *
+ * This routine gets the opcode from a SLI4 specific mailbox command for
+ * sending IOCTL command. If the mailbox command is not MBX_SLI4_CONFIG
+ * (0x9B) or if the IOCTL sub-header is not present, opcode 0x0 shall be
+ * returned.
+ **/
+uint8_t
+lpfc_sli4_mbox_opcode_get(struct lpfc_hba *phba, struct lpfcMboxq *mbox)
+{
+	struct lpfc_mbx_sli4_config *sli4_cfg;
+	union lpfc_sli4_cfg_shdr *cfg_shdr;
+
+	if (mbox->u.mb.mbxCommand != MBX_SLI4_CONFIG)
+		return 0;
+	sli4_cfg = &mbox->u.mqe.un.sli4_config;
+
+	/* For embedded mbox command, get opcode from embedded sub-header*/
+	if (bf_get(lpfc_mbox_hdr_emb, &sli4_cfg->header.cfg_mhdr)) {
+		cfg_shdr = &mbox->u.mqe.un.sli4_config.header.cfg_shdr;
+		return bf_get(lpfc_mbox_hdr_opcode, &cfg_shdr->request);
+	}
+
+	/* For non-embedded mbox command, get opcode from first dma page */
+	if (unlikely(!mbox->sge_array))
+		return 0;
+	cfg_shdr = (union lpfc_sli4_cfg_shdr *)mbox->sge_array->addr[0];
+	return bf_get(lpfc_mbox_hdr_opcode, &cfg_shdr->request);
+}
+
+/**
+ * lpfc_request_features: Configure SLI4 REQUEST_FEATURES mailbox
+ * @mboxq: pointer to lpfc mbox command.
+ *
+ * This routine sets up the mailbox for an SLI4 REQUEST_FEATURES
+ * mailbox command.
+ **/
+void
+lpfc_request_features(struct lpfc_hba *phba, struct lpfcMboxq *mboxq)
+{
+	/* Set up SLI4 mailbox command header fields */
+	memset(mboxq, 0, sizeof(LPFC_MBOXQ_t));
+	bf_set(lpfc_mqe_command, &mboxq->u.mqe, MBX_SLI4_REQ_FTRS);
+
+	/* Set up host requested features. */
+	bf_set(lpfc_mbx_rq_ftr_rq_fcpi, &mboxq->u.mqe.un.req_ftrs, 1);
+
+	/* Virtual fabrics and FIPs are not supported yet. */
+	bf_set(lpfc_mbx_rq_ftr_rq_ifip, &mboxq->u.mqe.un.req_ftrs, 0);
+
+	/* Enable DIF (block guard) only if configured to do so. */
+	if (phba->cfg_enable_bg)
+		bf_set(lpfc_mbx_rq_ftr_rq_dif, &mboxq->u.mqe.un.req_ftrs, 1);
+
+	/* Enable NPIV only if configured to do so. */
+	if (phba->max_vpi && phba->cfg_enable_npiv)
+		bf_set(lpfc_mbx_rq_ftr_rq_npiv, &mboxq->u.mqe.un.req_ftrs, 1);
+
+	return;
+}
+
+/**
+ * lpfc_init_vfi - Initialize the INIT_VFI mailbox command
+ * @mbox: pointer to lpfc mbox command to initialize.
+ * @vport: Vport associated with the VF.
+ *
+ * This routine initializes @mbox to all zeros and then fills in the mailbox
+ * fields from @vport. INIT_VFI configures virtual fabrics identified by VFI
+ * in the context of an FCF. The driver issues this command to setup a VFI
+ * before issuing a FLOGI to login to the VSAN. The driver should also issue a
+ * REG_VFI after a successful VSAN login.
+ **/
+void
+lpfc_init_vfi(struct lpfcMboxq *mbox, struct lpfc_vport *vport)
+{
+	struct lpfc_mbx_init_vfi *init_vfi;
+
+	memset(mbox, 0, sizeof(*mbox));
+	init_vfi = &mbox->u.mqe.un.init_vfi;
+	bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_INIT_VFI);
+	bf_set(lpfc_init_vfi_vr, init_vfi, 1);
+	bf_set(lpfc_init_vfi_vt, init_vfi, 1);
+	bf_set(lpfc_init_vfi_vfi, init_vfi, vport->vfi + vport->phba->vfi_base);
+	bf_set(lpfc_init_vfi_fcfi, init_vfi, vport->phba->fcf.fcfi);
+}
+
+/**
+ * lpfc_reg_vfi - Initialize the REG_VFI mailbox command
+ * @mbox: pointer to lpfc mbox command to initialize.
+ * @vport: vport associated with the VF.
+ * @phys: BDE DMA bus address used to send the service parameters to the HBA.
+ *
+ * This routine initializes @mbox to all zeros and then fills in the mailbox
+ * fields from @vport, and uses @buf as a DMAable buffer to send the vport's
+ * fc service parameters to the HBA for this VFI. REG_VFI configures virtual
+ * fabrics identified by VFI in the context of an FCF.
+ **/
+void
+lpfc_reg_vfi(struct lpfcMboxq *mbox, struct lpfc_vport *vport, dma_addr_t phys)
+{
+	struct lpfc_mbx_reg_vfi *reg_vfi;
+
+	memset(mbox, 0, sizeof(*mbox));
+	reg_vfi = &mbox->u.mqe.un.reg_vfi;
+	bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_REG_VFI);
+	bf_set(lpfc_reg_vfi_vp, reg_vfi, 1);
+	bf_set(lpfc_reg_vfi_vfi, reg_vfi, vport->vfi + vport->phba->vfi_base);
+	bf_set(lpfc_reg_vfi_fcfi, reg_vfi, vport->phba->fcf.fcfi);
+	bf_set(lpfc_reg_vfi_vpi, reg_vfi, vport->vpi + vport->phba->vpi_base);
+	reg_vfi->bde.addrHigh = putPaddrHigh(phys);
+	reg_vfi->bde.addrLow = putPaddrLow(phys);
+	reg_vfi->bde.tus.f.bdeSize = sizeof(vport->fc_sparam);
+	reg_vfi->bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+	bf_set(lpfc_reg_vfi_nport_id, reg_vfi, vport->fc_myDID);
+}
+
+/**
+ * lpfc_init_vpi - Initialize the INIT_VPI mailbox command
+ * @mbox: pointer to lpfc mbox command to initialize.
+ * @vpi: VPI to be initialized.
+ *
+ * The INIT_VPI mailbox command supports virtual N_Ports. The driver uses the
+ * command to activate a virtual N_Port. The HBA assigns a MAC address to use
+ * with the virtual N Port.  The SLI Host issues this command before issuing a
+ * FDISC to connect to the Fabric. The SLI Host should issue a REG_VPI after a
+ * successful virtual NPort login.
+ **/
+void
+lpfc_init_vpi(struct lpfcMboxq *mbox, uint16_t vpi)
+{
+	memset(mbox, 0, sizeof(*mbox));
+	bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_INIT_VPI);
+	bf_set(lpfc_init_vpi_vpi, &mbox->u.mqe.un.init_vpi, vpi);
+}
+
+/**
+ * lpfc_unreg_vfi - Initialize the UNREG_VFI mailbox command
+ * @mbox: pointer to lpfc mbox command to initialize.
+ * @vfi: VFI to be unregistered.
+ *
+ * The UNREG_VFI mailbox command causes the SLI Host to put a virtual fabric
+ * (logical NPort) into the inactive state. The SLI Host must have logged out
+ * and unregistered all remote N_Ports to abort any activity on the virtual
+ * fabric. The SLI Port posts the mailbox response after marking the virtual
+ * fabric inactive.
+ **/
+void
+lpfc_unreg_vfi(struct lpfcMboxq *mbox, uint16_t vfi)
+{
+	memset(mbox, 0, sizeof(*mbox));
+	bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_UNREG_VFI);
+	bf_set(lpfc_unreg_vfi_vfi, &mbox->u.mqe.un.unreg_vfi, vfi);
+}
+
+/**
+ * lpfc_dump_fcoe_param - Dump config region 23 to get FCoe parameters.
+ * @phba: pointer to the hba structure containing.
+ * @mbox: pointer to lpfc mbox command to initialize.
+ *
+ * This function create a SLI4 dump mailbox command to dump FCoE
+ * parameters stored in region 23.
+ **/
+int
+lpfc_dump_fcoe_param(struct lpfc_hba *phba,
+		struct lpfcMboxq *mbox)
+{
+	struct lpfc_dmabuf *mp = NULL;
+	MAILBOX_t *mb;
+
+	memset(mbox, 0, sizeof(*mbox));
+	mb = &mbox->u.mb;
+
+	mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
+	if (mp)
+		mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
+
+	if (!mp || !mp->virt) {
+		kfree(mp);
+		/* dump_fcoe_param failed to allocate memory */
+		lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
+			"2569 lpfc_dump_fcoe_param: memory"
+			" allocation failed \n");
+		return 1;
+	}
+
+	memset(mp->virt, 0, LPFC_BPL_SIZE);
+	INIT_LIST_HEAD(&mp->list);
+
+	/* save address for completion */
+	mbox->context1 = (uint8_t *) mp;
+
+	mb->mbxCommand = MBX_DUMP_MEMORY;
+	mb->un.varDmp.type = DMP_NV_PARAMS;
+	mb->un.varDmp.region_id = DMP_REGION_FCOEPARAM;
+	mb->un.varDmp.sli4_length = DMP_FCOEPARAM_RGN_SIZE;
+	mb->un.varWords[3] = putPaddrLow(mp->phys);
+	mb->un.varWords[4] = putPaddrHigh(mp->phys);
+	return 0;
+}
+
+/**
+ * lpfc_reg_fcfi - Initialize the REG_FCFI mailbox command
+ * @phba: pointer to the hba structure containing the FCF index and RQ ID.
+ * @mbox: pointer to lpfc mbox command to initialize.
+ *
+ * The REG_FCFI mailbox command supports Fibre Channel Forwarders (FCFs). The
+ * SLI Host uses the command to activate an FCF after it has acquired FCF
+ * information via a READ_FCF mailbox command. This mailbox command also is used
+ * to indicate where received unsolicited frames from this FCF will be sent. By
+ * default this routine will set up the FCF to forward all unsolicited frames
+ * the the RQ ID passed in the @phba. This can be overridden by the caller for
+ * more complicated setups.
+ **/
+void
+lpfc_reg_fcfi(struct lpfc_hba *phba, struct lpfcMboxq *mbox)
+{
+	struct lpfc_mbx_reg_fcfi *reg_fcfi;
+
+	memset(mbox, 0, sizeof(*mbox));
+	reg_fcfi = &mbox->u.mqe.un.reg_fcfi;
+	bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_REG_FCFI);
+	bf_set(lpfc_reg_fcfi_rq_id0, reg_fcfi, phba->sli4_hba.hdr_rq->queue_id);
+	bf_set(lpfc_reg_fcfi_rq_id1, reg_fcfi, REG_FCF_INVALID_QID);
+	bf_set(lpfc_reg_fcfi_rq_id2, reg_fcfi, REG_FCF_INVALID_QID);
+	bf_set(lpfc_reg_fcfi_rq_id3, reg_fcfi, REG_FCF_INVALID_QID);
+	bf_set(lpfc_reg_fcfi_info_index, reg_fcfi, phba->fcf.fcf_indx);
+	/* reg_fcf addr mode is bit wise inverted value of fcf addr_mode */
+	bf_set(lpfc_reg_fcfi_mam, reg_fcfi,
+		(~phba->fcf.addr_mode) & 0x3);
+	if (phba->fcf.fcf_flag & FCF_VALID_VLAN) {
+		bf_set(lpfc_reg_fcfi_vv, reg_fcfi, 1);
+		bf_set(lpfc_reg_fcfi_vlan_tag, reg_fcfi, phba->fcf.vlan_id);
+	}
+}
+
+/**
+ * lpfc_unreg_fcfi - Initialize the UNREG_FCFI mailbox command
+ * @mbox: pointer to lpfc mbox command to initialize.
+ * @fcfi: FCFI to be unregistered.
+ *
+ * The UNREG_FCFI mailbox command supports Fibre Channel Forwarders (FCFs).
+ * The SLI Host uses the command to inactivate an FCFI.
+ **/
+void
+lpfc_unreg_fcfi(struct lpfcMboxq *mbox, uint16_t fcfi)
+{
+	memset(mbox, 0, sizeof(*mbox));
+	bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_UNREG_FCFI);
+	bf_set(lpfc_unreg_fcfi, &mbox->u.mqe.un.unreg_fcfi, fcfi);
+}
+
+/**
+ * lpfc_resume_rpi - Initialize the RESUME_RPI mailbox command
+ * @mbox: pointer to lpfc mbox command to initialize.
+ * @ndlp: The nodelist structure that describes the RPI to resume.
+ *
+ * The RESUME_RPI mailbox command is used to restart I/O to an RPI after a
+ * link event.
+ **/
+void
+lpfc_resume_rpi(struct lpfcMboxq *mbox, struct lpfc_nodelist *ndlp)
+{
+	struct lpfc_mbx_resume_rpi *resume_rpi;
+
+	memset(mbox, 0, sizeof(*mbox));
+	resume_rpi = &mbox->u.mqe.un.resume_rpi;
+	bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_RESUME_RPI);
+	bf_set(lpfc_resume_rpi_rpi, resume_rpi, ndlp->nlp_rpi);
+	bf_set(lpfc_resume_rpi_vpi, resume_rpi,
+	       ndlp->vport->vpi + ndlp->vport->phba->vpi_base);
+	bf_set(lpfc_resume_rpi_vfi, resume_rpi,
+	       ndlp->vport->vfi + ndlp->vport->phba->vfi_base);
+}
diff --git a/drivers/scsi/lpfc/lpfc_nportdisc.c b/drivers/scsi/lpfc/lpfc_nportdisc.c
index 6ba5a72..6efe459 100644
--- a/drivers/scsi/lpfc/lpfc_nportdisc.c
+++ b/drivers/scsi/lpfc/lpfc_nportdisc.c
@@ -1192,7 +1192,7 @@
 
 	/* cleanup any ndlp on mbox q waiting for reglogin cmpl */
 	if ((mb = phba->sli.mbox_active)) {
-		if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
+		if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
 		   (ndlp == (struct lpfc_nodelist *) mb->context2)) {
 			lpfc_nlp_put(ndlp);
 			mb->context2 = NULL;
@@ -1202,7 +1202,7 @@
 
 	spin_lock_irq(&phba->hbalock);
 	list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
-		if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
+		if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
 		   (ndlp == (struct lpfc_nodelist *) mb->context2)) {
 			mp = (struct lpfc_dmabuf *) (mb->context1);
 			if (mp) {
@@ -1253,7 +1253,7 @@
 {
 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 	LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
-	MAILBOX_t *mb = &pmb->mb;
+	MAILBOX_t *mb = &pmb->u.mb;
 	uint32_t did  = mb->un.varWords[1];
 
 	if (mb->mbxStatus) {
@@ -1880,11 +1880,12 @@
 			    void *arg, uint32_t evt)
 {
 	LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
-	MAILBOX_t    *mb = &pmb->mb;
+	MAILBOX_t    *mb = &pmb->u.mb;
 
-	if (!mb->mbxStatus)
+	if (!mb->mbxStatus) {
 		ndlp->nlp_rpi = mb->un.varWords[0];
-	else {
+		ndlp->nlp_flag |= NLP_RPI_VALID;
+	} else {
 		if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
 			lpfc_drop_node(vport, ndlp);
 			return NLP_STE_FREED_NODE;
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index cf42ada..b53af99 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -43,24 +43,7 @@
 #include "lpfc_logmsg.h"
 #include "lpfc_compat.h"
 #include "lpfc_debugfs.h"
-
-/*
- * Define macro to log: Mailbox command x%x cannot issue Data
- * This allows multiple uses of lpfc_msgBlk0311
- * w/o perturbing log msg utility.
- */
-#define LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag) \
-			lpfc_printf_log(phba, \
-				KERN_INFO, \
-				LOG_MBOX | LOG_SLI, \
-				"(%d):0311 Mailbox command x%x cannot " \
-				"issue Data: x%x x%x x%x\n", \
-				pmbox->vport ? pmbox->vport->vpi : 0, \
-				pmbox->mb.mbxCommand,		\
-				phba->pport->port_state,	\
-				psli->sli_flag,	\
-				flag)
-
+#include "lpfc_vport.h"
 
 /* There are only four IOCB completion types. */
 typedef enum _lpfc_iocb_type {
@@ -843,7 +826,7 @@
 	pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 	if (!pmb)
 		return -ENOMEM;
-	pmbox = &pmb->mb;
+	pmbox = &pmb->u.mb;
 	phba->link_state = LPFC_INIT_MBX_CMDS;
 	for (i = 0; i < psli->num_rings; i++) {
 		lpfc_config_ring(phba, i, pmb);
@@ -1652,6 +1635,15 @@
 	case MBX_HEARTBEAT:
 	case MBX_PORT_CAPABILITIES:
 	case MBX_PORT_IOV_CONTROL:
+	case MBX_SLI4_CONFIG:
+	case MBX_SLI4_REQ_FTRS:
+	case MBX_REG_FCFI:
+	case MBX_UNREG_FCFI:
+	case MBX_REG_VFI:
+	case MBX_UNREG_VFI:
+	case MBX_INIT_VPI:
+	case MBX_INIT_VFI:
+	case MBX_RESUME_RPI:
 		ret = mbxCommand;
 		break;
 	default:
@@ -1672,7 +1664,7 @@
  * will wake up thread waiting on the wait queue pointed by context1
  * of the mailbox.
  **/
-static void
+void
 lpfc_sli_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
 {
 	wait_queue_head_t *pdone_q;
@@ -1706,7 +1698,7 @@
 lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
 	struct lpfc_dmabuf *mp;
-	uint16_t rpi;
+	uint16_t rpi, vpi;
 	int rc;
 
 	mp = (struct lpfc_dmabuf *) (pmb->context1);
@@ -1716,24 +1708,30 @@
 		kfree(mp);
 	}
 
+	if ((pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) &&
+	    (phba->sli_rev == LPFC_SLI_REV4))
+		lpfc_sli4_free_rpi(phba, pmb->u.mb.un.varUnregLogin.rpi);
+
 	/*
 	 * If a REG_LOGIN succeeded  after node is destroyed or node
 	 * is in re-discovery driver need to cleanup the RPI.
 	 */
 	if (!(phba->pport->load_flag & FC_UNLOADING) &&
-	    pmb->mb.mbxCommand == MBX_REG_LOGIN64 &&
-	    !pmb->mb.mbxStatus) {
-
-		rpi = pmb->mb.un.varWords[0];
-		lpfc_unreg_login(phba, pmb->mb.un.varRegLogin.vpi, rpi, pmb);
+	    pmb->u.mb.mbxCommand == MBX_REG_LOGIN64 &&
+	    !pmb->u.mb.mbxStatus) {
+		rpi = pmb->u.mb.un.varWords[0];
+		vpi = pmb->u.mb.un.varRegLogin.vpi - phba->vpi_base;
+		lpfc_unreg_login(phba, vpi, rpi, pmb);
 		pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 		if (rc != MBX_NOT_FINISHED)
 			return;
 	}
 
-	mempool_free(pmb, phba->mbox_mem_pool);
-	return;
+	if (bf_get(lpfc_mqe_command, &pmb->u.mqe) == MBX_SLI4_CONFIG)
+		lpfc_sli4_mbox_cmd_free(phba, pmb);
+	else
+		mempool_free(pmb, phba->mbox_mem_pool);
 }
 
 /**
@@ -1770,7 +1768,7 @@
 		if (pmb == NULL)
 			break;
 
-		pmbox = &pmb->mb;
+		pmbox = &pmb->u.mb;
 
 		if (pmbox->mbxCommand != MBX_HEARTBEAT) {
 			if (pmb->vport) {
@@ -1799,9 +1797,10 @@
 			/* Unknow mailbox command compl */
 			lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
 					"(%d):0323 Unknown Mailbox command "
-					"%x Cmpl\n",
+					"x%x (x%x) Cmpl\n",
 					pmb->vport ? pmb->vport->vpi : 0,
-					pmbox->mbxCommand);
+					pmbox->mbxCommand,
+					lpfc_sli4_mbox_opcode_get(phba, pmb));
 			phba->link_state = LPFC_HBA_ERROR;
 			phba->work_hs = HS_FFER3;
 			lpfc_handle_eratt(phba);
@@ -1816,29 +1815,29 @@
 						LOG_MBOX | LOG_SLI,
 						"(%d):0305 Mbox cmd cmpl "
 						"error - RETRYing Data: x%x "
-						"x%x x%x x%x\n",
+						"(x%x) x%x x%x x%x\n",
 						pmb->vport ? pmb->vport->vpi :0,
 						pmbox->mbxCommand,
+						lpfc_sli4_mbox_opcode_get(phba,
+									  pmb),
 						pmbox->mbxStatus,
 						pmbox->un.varWords[0],
 						pmb->vport->port_state);
 				pmbox->mbxStatus = 0;
 				pmbox->mbxOwner = OWN_HOST;
-				spin_lock_irq(&phba->hbalock);
-				phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
-				spin_unlock_irq(&phba->hbalock);
 				rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
-				if (rc == MBX_SUCCESS)
+				if (rc != MBX_NOT_FINISHED)
 					continue;
 			}
 		}
 
 		/* Mailbox cmd <cmd> Cmpl <cmpl> */
 		lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
-				"(%d):0307 Mailbox cmd x%x Cmpl x%p "
+				"(%d):0307 Mailbox cmd x%x (x%x) Cmpl x%p "
 				"Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n",
 				pmb->vport ? pmb->vport->vpi : 0,
 				pmbox->mbxCommand,
+				lpfc_sli4_mbox_opcode_get(phba, pmb),
 				pmb->mbox_cmpl,
 				*((uint32_t *) pmbox),
 				pmbox->un.varWords[0],
@@ -3377,10 +3376,10 @@
 	}
 	spin_lock_irq(&phba->hbalock);
 	psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+	psli->mbox_active = NULL;
 	phba->link_flag &= ~LS_IGNORE_ERATT;
 	spin_unlock_irq(&phba->hbalock);
 
-	psli->mbox_active = NULL;
 	lpfc_hba_down_post(phba);
 	phba->link_state = LPFC_HBA_ERROR;
 
@@ -3790,7 +3789,7 @@
 	if (!pmb)
 		return -ENOMEM;
 
-	pmbox = &pmb->mb;
+	pmbox = &pmb->u.mb;
 
 	/* Initialize the struct lpfc_sli_hbq structure for each hbq */
 	phba->link_state = LPFC_INIT_MBX_CMDS;
@@ -3917,33 +3916,43 @@
 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 				"0442 Adapter failed to init, mbxCmd x%x "
 				"CONFIG_PORT, mbxStatus x%x Data: x%x\n",
-				pmb->mb.mbxCommand, pmb->mb.mbxStatus, 0);
+				pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus, 0);
 			spin_lock_irq(&phba->hbalock);
-			phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
+			phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE;
 			spin_unlock_irq(&phba->hbalock);
 			rc = -ENXIO;
-		} else
+		} else {
+			/* Allow asynchronous mailbox command to go through */
+			spin_lock_irq(&phba->hbalock);
+			phba->sli.sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
+			spin_unlock_irq(&phba->hbalock);
 			done = 1;
+		}
 	}
 	if (!done) {
 		rc = -EINVAL;
 		goto do_prep_failed;
 	}
-	if (pmb->mb.un.varCfgPort.sli_mode == 3) {
-		if (!pmb->mb.un.varCfgPort.cMA) {
+	if (pmb->u.mb.un.varCfgPort.sli_mode == 3) {
+		if (!pmb->u.mb.un.varCfgPort.cMA) {
 			rc = -ENXIO;
 			goto do_prep_failed;
 		}
-		if (phba->max_vpi && pmb->mb.un.varCfgPort.gmv) {
+		if (phba->max_vpi && pmb->u.mb.un.varCfgPort.gmv) {
 			phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
-			phba->max_vpi = pmb->mb.un.varCfgPort.max_vpi;
+			phba->max_vpi = pmb->u.mb.un.varCfgPort.max_vpi;
+			phba->max_vports = (phba->max_vpi > phba->max_vports) ?
+				phba->max_vpi : phba->max_vports;
+
 		} else
 			phba->max_vpi = 0;
-		if (pmb->mb.un.varCfgPort.gerbm)
+		if (pmb->u.mb.un.varCfgPort.gdss)
+			phba->sli3_options |= LPFC_SLI3_DSS_ENABLED;
+		if (pmb->u.mb.un.varCfgPort.gerbm)
 			phba->sli3_options |= LPFC_SLI3_HBQ_ENABLED;
-		if (pmb->mb.un.varCfgPort.gcrp)
+		if (pmb->u.mb.un.varCfgPort.gcrp)
 			phba->sli3_options |= LPFC_SLI3_CRP_ENABLED;
-		if (pmb->mb.un.varCfgPort.ginb) {
+		if (pmb->u.mb.un.varCfgPort.ginb) {
 			phba->sli3_options |= LPFC_SLI3_INB_ENABLED;
 			phba->hbq_get = phba->mbox->us.s3_inb_pgp.hbq_get;
 			phba->port_gp = phba->mbox->us.s3_inb_pgp.port;
@@ -3959,7 +3968,7 @@
 		}
 
 		if (phba->cfg_enable_bg) {
-			if (pmb->mb.un.varCfgPort.gbg)
+			if (pmb->u.mb.un.varCfgPort.gbg)
 				phba->sli3_options |= LPFC_SLI3_BG_ENABLED;
 			else
 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
@@ -4054,8 +4063,9 @@
 		if (rc)
 			goto lpfc_sli_hba_setup_error;
 	}
-
+	spin_lock_irq(&phba->hbalock);
 	phba->sli.sli_flag |= LPFC_PROCESS_LA;
+	spin_unlock_irq(&phba->hbalock);
 
 	rc = lpfc_config_port_post(phba);
 	if (rc)
@@ -4596,7 +4606,7 @@
 lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
 {
 	LPFC_MBOXQ_t *pmbox = phba->sli.mbox_active;
-	MAILBOX_t *mb = &pmbox->mb;
+	MAILBOX_t *mb = &pmbox->u.mb;
 	struct lpfc_sli *psli = &phba->sli;
 	struct lpfc_sli_ring *pring;
 
@@ -6414,6 +6424,52 @@
 }
 
 /**
+ * lpfc_sli_mbox_sys_flush - Flush mailbox command sub-system
+ * @phba: Pointer to HBA context object.
+ *
+ * This routine flushes the mailbox command subsystem. It will unconditionally
+ * flush all the mailbox commands in the three possible stages in the mailbox
+ * command sub-system: pending mailbox command queue; the outstanding mailbox
+ * command; and completed mailbox command queue. It is caller's responsibility
+ * to make sure that the driver is in the proper state to flush the mailbox
+ * command sub-system. Namely, the posting of mailbox commands into the
+ * pending mailbox command queue from the various clients must be stopped;
+ * either the HBA is in a state that it will never works on the outstanding
+ * mailbox command (such as in EEH or ERATT conditions) or the outstanding
+ * mailbox command has been completed.
+ **/
+static void
+lpfc_sli_mbox_sys_flush(struct lpfc_hba *phba)
+{
+	LIST_HEAD(completions);
+	struct lpfc_sli *psli = &phba->sli;
+	LPFC_MBOXQ_t *pmb;
+	unsigned long iflag;
+
+	/* Flush all the mailbox commands in the mbox system */
+	spin_lock_irqsave(&phba->hbalock, iflag);
+	/* The pending mailbox command queue */
+	list_splice_init(&phba->sli.mboxq, &completions);
+	/* The outstanding active mailbox command */
+	if (psli->mbox_active) {
+		list_add_tail(&psli->mbox_active->list, &completions);
+		psli->mbox_active = NULL;
+		psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+	}
+	/* The completed mailbox command queue */
+	list_splice_init(&phba->sli.mboxq_cmpl, &completions);
+	spin_unlock_irqrestore(&phba->hbalock, iflag);
+
+	/* Return all flushed mailbox commands with MBX_NOT_FINISHED status */
+	while (!list_empty(&completions)) {
+		list_remove_head(&completions, pmb, LPFC_MBOXQ_t, list);
+		pmb->u.mb.mbxStatus = MBX_NOT_FINISHED;
+		if (pmb->mbox_cmpl)
+			pmb->mbox_cmpl(phba, pmb);
+	}
+}
+
+/**
  * lpfc_sli_host_down - Vport cleanup function
  * @vport: Pointer to virtual port object.
  *
@@ -6506,9 +6562,11 @@
 	struct lpfc_sli *psli = &phba->sli;
 	struct lpfc_sli_ring *pring;
 	struct lpfc_dmabuf *buf_ptr;
-	LPFC_MBOXQ_t *pmb;
-	int i;
 	unsigned long flags = 0;
+	int i;
+
+	/* Shutdown the mailbox command sub-system */
+	lpfc_sli_mbox_sys_shutdown(phba);
 
 	lpfc_hba_down_prep(phba);
 
@@ -7773,7 +7831,7 @@
 
 		if ((work_ha_copy & HA_MBATT) && (phba->sli.mbox_active)) {
 			pmb = phba->sli.mbox_active;
-			pmbox = &pmb->mb;
+			pmbox = &pmb->u.mb;
 			mbox = phba->mbox;
 			vport = pmb->vport;
 
@@ -8170,6 +8228,183 @@
 }
 
 /**
+ * lpfc_sli4_sp_handle_async_event - Handle an asynchroous event
+ * @phba: Pointer to HBA context object.
+ * @cqe: Pointer to mailbox completion queue entry.
+ *
+ * This routine process a mailbox completion queue entry with asynchrous
+ * event.
+ *
+ * Return: true if work posted to worker thread, otherwise false.
+ **/
+static bool
+lpfc_sli4_sp_handle_async_event(struct lpfc_hba *phba, struct lpfc_mcqe *mcqe)
+{
+	struct lpfc_cq_event *cq_event;
+	unsigned long iflags;
+
+	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+			"0392 Async Event: word0:x%x, word1:x%x, "
+			"word2:x%x, word3:x%x\n", mcqe->word0,
+			mcqe->mcqe_tag0, mcqe->mcqe_tag1, mcqe->trailer);
+
+	/* Allocate a new internal CQ_EVENT entry */
+	cq_event = lpfc_sli4_cq_event_alloc(phba);
+	if (!cq_event) {
+		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+				"0394 Failed to allocate CQ_EVENT entry\n");
+		return false;
+	}
+
+	/* Move the CQE into an asynchronous event entry */
+	memcpy(&cq_event->cqe, mcqe, sizeof(struct lpfc_mcqe));
+	spin_lock_irqsave(&phba->hbalock, iflags);
+	list_add_tail(&cq_event->list, &phba->sli4_hba.sp_asynce_work_queue);
+	/* Set the async event flag */
+	phba->hba_flag |= ASYNC_EVENT;
+	spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+	return true;
+}
+
+/**
+ * lpfc_sli4_sp_handle_mbox_event - Handle a mailbox completion event
+ * @phba: Pointer to HBA context object.
+ * @cqe: Pointer to mailbox completion queue entry.
+ *
+ * This routine process a mailbox completion queue entry with mailbox
+ * completion event.
+ *
+ * Return: true if work posted to worker thread, otherwise false.
+ **/
+static bool
+lpfc_sli4_sp_handle_mbox_event(struct lpfc_hba *phba, struct lpfc_mcqe *mcqe)
+{
+	uint32_t mcqe_status;
+	MAILBOX_t *mbox, *pmbox;
+	struct lpfc_mqe *mqe;
+	struct lpfc_vport *vport;
+	struct lpfc_nodelist *ndlp;
+	struct lpfc_dmabuf *mp;
+	unsigned long iflags;
+	LPFC_MBOXQ_t *pmb;
+	bool workposted = false;
+	int rc;
+
+	/* If not a mailbox complete MCQE, out by checking mailbox consume */
+	if (!bf_get(lpfc_trailer_completed, mcqe))
+		goto out_no_mqe_complete;
+
+	/* Get the reference to the active mbox command */
+	spin_lock_irqsave(&phba->hbalock, iflags);
+	pmb = phba->sli.mbox_active;
+	if (unlikely(!pmb)) {
+		lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
+				"1832 No pending MBOX command to handle\n");
+		spin_unlock_irqrestore(&phba->hbalock, iflags);
+		goto out_no_mqe_complete;
+	}
+	spin_unlock_irqrestore(&phba->hbalock, iflags);
+	mqe = &pmb->u.mqe;
+	pmbox = (MAILBOX_t *)&pmb->u.mqe;
+	mbox = phba->mbox;
+	vport = pmb->vport;
+
+	/* Reset heartbeat timer */
+	phba->last_completion_time = jiffies;
+	del_timer(&phba->sli.mbox_tmo);
+
+	/* Move mbox data to caller's mailbox region, do endian swapping */
+	if (pmb->mbox_cmpl && mbox)
+		lpfc_sli_pcimem_bcopy(mbox, mqe, sizeof(struct lpfc_mqe));
+	/* Set the mailbox status with SLI4 range 0x4000 */
+	mcqe_status = bf_get(lpfc_mcqe_status, mcqe);
+	if (mcqe_status != MB_CQE_STATUS_SUCCESS)
+		bf_set(lpfc_mqe_status, mqe,
+		       (LPFC_MBX_ERROR_RANGE | mcqe_status));
+
+	if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) {
+		pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG;
+		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_MBOX_VPORT,
+				      "MBOX dflt rpi: status:x%x rpi:x%x",
+				      mcqe_status,
+				      pmbox->un.varWords[0], 0);
+		if (mcqe_status == MB_CQE_STATUS_SUCCESS) {
+			mp = (struct lpfc_dmabuf *)(pmb->context1);
+			ndlp = (struct lpfc_nodelist *)pmb->context2;
+			/* Reg_LOGIN of dflt RPI was successful. Now lets get
+			 * RID of the PPI using the same mbox buffer.
+			 */
+			lpfc_unreg_login(phba, vport->vpi,
+					 pmbox->un.varWords[0], pmb);
+			pmb->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
+			pmb->context1 = mp;
+			pmb->context2 = ndlp;
+			pmb->vport = vport;
+			rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
+			if (rc != MBX_BUSY)
+				lpfc_printf_log(phba, KERN_ERR, LOG_MBOX |
+						LOG_SLI, "0385 rc should "
+						"have been MBX_BUSY\n");
+			if (rc != MBX_NOT_FINISHED)
+				goto send_current_mbox;
+		}
+	}
+	spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
+	phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
+	spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
+
+	/* There is mailbox completion work to do */
+	spin_lock_irqsave(&phba->hbalock, iflags);
+	__lpfc_mbox_cmpl_put(phba, pmb);
+	phba->work_ha |= HA_MBATT;
+	spin_unlock_irqrestore(&phba->hbalock, iflags);
+	workposted = true;
+
+send_current_mbox:
+	spin_lock_irqsave(&phba->hbalock, iflags);
+	/* Release the mailbox command posting token */
+	phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+	/* Setting active mailbox pointer need to be in sync to flag clear */
+	phba->sli.mbox_active = NULL;
+	spin_unlock_irqrestore(&phba->hbalock, iflags);
+	/* Wake up worker thread to post the next pending mailbox command */
+	lpfc_worker_wake_up(phba);
+out_no_mqe_complete:
+	if (bf_get(lpfc_trailer_consumed, mcqe))
+		lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq);
+	return workposted;
+}
+
+/**
+ * lpfc_sli4_sp_handle_mcqe - Process a mailbox completion queue entry
+ * @phba: Pointer to HBA context object.
+ * @cqe: Pointer to mailbox completion queue entry.
+ *
+ * This routine process a mailbox completion queue entry, it invokes the
+ * proper mailbox complete handling or asynchrous event handling routine
+ * according to the MCQE's async bit.
+ *
+ * Return: true if work posted to worker thread, otherwise false.
+ **/
+static bool
+lpfc_sli4_sp_handle_mcqe(struct lpfc_hba *phba, struct lpfc_cqe *cqe)
+{
+	struct lpfc_mcqe mcqe;
+	bool workposted;
+
+	/* Copy the mailbox MCQE and convert endian order as needed */
+	lpfc_sli_pcimem_bcopy(cqe, &mcqe, sizeof(struct lpfc_mcqe));
+
+	/* Invoke the proper event handling routine */
+	if (!bf_get(lpfc_trailer_async, &mcqe))
+		workposted = lpfc_sli4_sp_handle_mbox_event(phba, &mcqe);
+	else
+		workposted = lpfc_sli4_sp_handle_async_event(phba, &mcqe);
+	return workposted;
+}
+
+/**
  * lpfc_sli4_sp_handle_els_wcqe - Handle els work-queue completion event
  * @phba: Pointer to HBA context object.
  * @wcqe: Pointer to work-queue completion queue entry.
@@ -9247,6 +9482,112 @@
 }
 
 /**
+ * lpfc_mq_create - Create a mailbox Queue on the HBA
+ * @phba: HBA structure that indicates port to create a queue on.
+ * @mq: The queue structure to use to create the mailbox queue.
+ *
+ * This function creates a mailbox queue, as detailed in @mq, on a port,
+ * described by @phba by sending a MQ_CREATE mailbox command to the HBA.
+ *
+ * The @phba struct is used to send mailbox command to HBA. The @cq struct
+ * is used to get the entry count and entry size that are necessary to
+ * determine the number of pages to allocate and use for this queue. This
+ * function will send the MQ_CREATE mailbox command to the HBA to setup the
+ * mailbox queue. This function is asynchronous and will wait for the mailbox
+ * command to finish before continuing.
+ *
+ * On success this function will return a zero. If unable to allocate enough
+ * memory this function will return ENOMEM. If the queue create mailbox command
+ * fails this function will return ENXIO.
+ **/
+uint32_t
+lpfc_mq_create(struct lpfc_hba *phba, struct lpfc_queue *mq,
+	       struct lpfc_queue *cq, uint32_t subtype)
+{
+	struct lpfc_mbx_mq_create *mq_create;
+	struct lpfc_dmabuf *dmabuf;
+	LPFC_MBOXQ_t *mbox;
+	int rc, length, status = 0;
+	uint32_t shdr_status, shdr_add_status;
+	union lpfc_sli4_cfg_shdr *shdr;
+
+	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+	if (!mbox)
+		return -ENOMEM;
+	length = (sizeof(struct lpfc_mbx_mq_create) -
+		  sizeof(struct lpfc_sli4_cfg_mhdr));
+	lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+			 LPFC_MBOX_OPCODE_MQ_CREATE,
+			 length, LPFC_SLI4_MBX_EMBED);
+	mq_create = &mbox->u.mqe.un.mq_create;
+	bf_set(lpfc_mbx_mq_create_num_pages, &mq_create->u.request,
+		    mq->page_count);
+	bf_set(lpfc_mq_context_cq_id, &mq_create->u.request.context,
+		    cq->queue_id);
+	bf_set(lpfc_mq_context_valid, &mq_create->u.request.context, 1);
+	switch (mq->entry_count) {
+	default:
+		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+				"0362 Unsupported MQ count. (%d)\n",
+				mq->entry_count);
+		if (mq->entry_count < 16)
+			return -EINVAL;
+		/* otherwise default to smallest count (drop through) */
+	case 16:
+		bf_set(lpfc_mq_context_count, &mq_create->u.request.context,
+		       LPFC_MQ_CNT_16);
+		break;
+	case 32:
+		bf_set(lpfc_mq_context_count, &mq_create->u.request.context,
+		       LPFC_MQ_CNT_32);
+		break;
+	case 64:
+		bf_set(lpfc_mq_context_count, &mq_create->u.request.context,
+		       LPFC_MQ_CNT_64);
+		break;
+	case 128:
+		bf_set(lpfc_mq_context_count, &mq_create->u.request.context,
+		       LPFC_MQ_CNT_128);
+		break;
+	}
+	list_for_each_entry(dmabuf, &mq->page_list, list) {
+		mq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
+					putPaddrLow(dmabuf->phys);
+		mq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
+					putPaddrHigh(dmabuf->phys);
+	}
+	rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+	/* The IOCTL status is embedded in the mailbox subheader. */
+	shdr = (union lpfc_sli4_cfg_shdr *) &mq_create->header.cfg_shdr;
+	shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+	shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+	if (shdr_status || shdr_add_status || rc) {
+		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+				"2502 MQ_CREATE mailbox failed with "
+				"status x%x add_status x%x, mbx status x%x\n",
+				shdr_status, shdr_add_status, rc);
+		status = -ENXIO;
+		goto out;
+	}
+	mq->queue_id = bf_get(lpfc_mbx_mq_create_q_id, &mq_create->u.response);
+	if (mq->queue_id == 0xFFFF) {
+		status = -ENXIO;
+		goto out;
+	}
+	mq->type = LPFC_MQ;
+	mq->subtype = subtype;
+	mq->host_index = 0;
+	mq->hba_index = 0;
+
+	/* link the mq onto the parent cq child list */
+	list_add_tail(&mq->list, &cq->child_list);
+out:
+	if (rc != MBX_TIMEOUT)
+		mempool_free(mbox, phba->mbox_mem_pool);
+	return status;
+}
+
+/**
  * lpfc_wq_create - Create a Work Queue on the HBA
  * @phba: HBA structure that indicates port to create a queue on.
  * @wq: The queue structure to use to create the work queue.
@@ -9615,6 +9956,60 @@
 }
 
 /**
+ * lpfc_mq_destroy - Destroy a Mailbox Queue on the HBA
+ * @qm: The queue structure associated with the queue to destroy.
+ *
+ * This function destroys a queue, as detailed in @mq by sending an mailbox
+ * command, specific to the type of queue, to the HBA.
+ *
+ * The @mq struct is used to get the queue ID of the queue to destroy.
+ *
+ * On success this function will return a zero. If the queue destroy mailbox
+ * command fails this function will return ENXIO.
+ **/
+uint32_t
+lpfc_mq_destroy(struct lpfc_hba *phba, struct lpfc_queue *mq)
+{
+	LPFC_MBOXQ_t *mbox;
+	int rc, length, status = 0;
+	uint32_t shdr_status, shdr_add_status;
+	union lpfc_sli4_cfg_shdr *shdr;
+
+	if (!mq)
+		return -ENODEV;
+	mbox = mempool_alloc(mq->phba->mbox_mem_pool, GFP_KERNEL);
+	if (!mbox)
+		return -ENOMEM;
+	length = (sizeof(struct lpfc_mbx_mq_destroy) -
+		  sizeof(struct lpfc_sli4_cfg_mhdr));
+	lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+			 LPFC_MBOX_OPCODE_MQ_DESTROY,
+			 length, LPFC_SLI4_MBX_EMBED);
+	bf_set(lpfc_mbx_mq_destroy_q_id, &mbox->u.mqe.un.mq_destroy.u.request,
+	       mq->queue_id);
+	mbox->vport = mq->phba->pport;
+	mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+	rc = lpfc_sli_issue_mbox(mq->phba, mbox, MBX_POLL);
+	/* The IOCTL status is embedded in the mailbox subheader. */
+	shdr = (union lpfc_sli4_cfg_shdr *)
+		&mbox->u.mqe.un.mq_destroy.header.cfg_shdr;
+	shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+	shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
+	if (shdr_status || shdr_add_status || rc) {
+		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+				"2507 MQ_DESTROY mailbox failed with "
+				"status x%x add_status x%x, mbx status x%x\n",
+				shdr_status, shdr_add_status, rc);
+		status = -ENXIO;
+	}
+	/* Remove mq from any list */
+	list_del_init(&mq->list);
+	if (rc != MBX_TIMEOUT)
+		mempool_free(mbox, mq->phba->mbox_mem_pool);
+	return status;
+}
+
+/**
  * lpfc_wq_destroy - Destroy a Work Queue on the HBA
  * @wq: The queue structure associated with the queue to destroy.
  *