Linux-libre 4.6.2-gnu

1 files changed, 412 insertions, 455 deletions

diff --git a/drivers/scsi/be2iscsi/be_cmds.c b/drivers/scsi/be2iscsi/be_cmds.c
index 2778089b0..a55eaeea3 100644
--- a/drivers/scsi/be2iscsi/be_cmds.c
+++ b/drivers/scsi/be2iscsi/be_cmds.c
@@ -104,24 +104,16 @@ int be_chk_reset_complete(struct beiscsi_hba *phba)
 	return 0;
 }
 
-void be_mcc_notify(struct beiscsi_hba *phba)
-{
-	struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
-	u32 val = 0;
-
-	val |= mccq->id & DB_MCCQ_RING_ID_MASK;
-	val |= 1 << DB_MCCQ_NUM_POSTED_SHIFT;
-	iowrite32(val, phba->db_va + DB_MCCQ_OFFSET);
-}
-
 unsigned int alloc_mcc_tag(struct beiscsi_hba *phba)
 {
 	unsigned int tag = 0;
 
+	spin_lock(&phba->ctrl.mcc_lock);
 	if (phba->ctrl.mcc_tag_available) {
 		tag = phba->ctrl.mcc_tag[phba->ctrl.mcc_alloc_index];
 		phba->ctrl.mcc_tag[phba->ctrl.mcc_alloc_index] = 0;
-		phba->ctrl.mcc_numtag[tag] = 0;
+		phba->ctrl.mcc_tag_status[tag] = 0;
+		phba->ctrl.ptag_state[tag].tag_state = 0;
 	}
 	if (tag) {
 		phba->ctrl.mcc_tag_available--;
@@ -130,11 +122,89 @@ unsigned int alloc_mcc_tag(struct beiscsi_hba *phba)
 		else
 			phba->ctrl.mcc_alloc_index++;
 	}
+	spin_unlock(&phba->ctrl.mcc_lock);
 	return tag;
 }
 
+struct be_mcc_wrb *alloc_mcc_wrb(struct beiscsi_hba *phba,
+				 unsigned int *ref_tag)
+{
+	struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
+	struct be_mcc_wrb *wrb = NULL;
+	unsigned int tag;
+
+	spin_lock_bh(&phba->ctrl.mcc_lock);
+	if (mccq->used == mccq->len) {
+		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT |
+			    BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
+			    "BC_%d : MCC queue full: WRB used %u tag avail %u\n",
+			    mccq->used, phba->ctrl.mcc_tag_available);
+		goto alloc_failed;
+	}
+
+	if (!phba->ctrl.mcc_tag_available)
+		goto alloc_failed;
+
+	tag = phba->ctrl.mcc_tag[phba->ctrl.mcc_alloc_index];
+	if (!tag) {
+		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT |
+			    BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
+			    "BC_%d : MCC tag 0 allocated: tag avail %u alloc index %u\n",
+			    phba->ctrl.mcc_tag_available,
+			    phba->ctrl.mcc_alloc_index);
+		goto alloc_failed;
+	}
+
+	/* return this tag for further reference */
+	*ref_tag = tag;
+	phba->ctrl.mcc_tag[phba->ctrl.mcc_alloc_index] = 0;
+	phba->ctrl.mcc_tag_status[tag] = 0;
+	phba->ctrl.ptag_state[tag].tag_state = 0;
+	phba->ctrl.mcc_tag_available--;
+	if (phba->ctrl.mcc_alloc_index == (MAX_MCC_CMD - 1))
+		phba->ctrl.mcc_alloc_index = 0;
+	else
+		phba->ctrl.mcc_alloc_index++;
+
+	wrb = queue_head_node(mccq);
+	memset(wrb, 0, sizeof(*wrb));
+	wrb->tag0 = tag;
+	wrb->tag0 |= (mccq->head << MCC_Q_WRB_IDX_SHIFT) & MCC_Q_WRB_IDX_MASK;
+	queue_head_inc(mccq);
+	mccq->used++;
+
+alloc_failed:
+	spin_unlock_bh(&phba->ctrl.mcc_lock);
+	return wrb;
+}
+
+void free_mcc_wrb(struct be_ctrl_info *ctrl, unsigned int tag)
+{
+	struct be_queue_info *mccq = &ctrl->mcc_obj.q;
+
+	spin_lock_bh(&ctrl->mcc_lock);
+	tag = tag & MCC_Q_CMD_TAG_MASK;
+	ctrl->mcc_tag[ctrl->mcc_free_index] = tag;
+	if (ctrl->mcc_free_index == (MAX_MCC_CMD - 1))
+		ctrl->mcc_free_index = 0;
+	else
+		ctrl->mcc_free_index++;
+	ctrl->mcc_tag_available++;
+	mccq->used--;
+	spin_unlock_bh(&ctrl->mcc_lock);
+}
+
+/**
+ * beiscsi_fail_session(): Closing session with appropriate error
+ * @cls_session: ptr to session
+ **/
+void beiscsi_fail_session(struct iscsi_cls_session *cls_session)
+{
+	iscsi_session_failure(cls_session->dd_data, ISCSI_ERR_CONN_FAILED);
+}
+
 /*
- * beiscsi_mccq_compl()- Wait for completion of MBX
+ * beiscsi_mccq_compl_wait()- Process completion in MCC CQ
  * @phba: Driver private structure
  * @tag: Tag for the MBX Command
  * @wrb: the WRB used for the MBX Command
@@ -146,43 +216,40 @@ unsigned int alloc_mcc_tag(struct beiscsi_hba *phba)
  * Success: 0
  * Failure: Non-Zero
  **/
-int beiscsi_mccq_compl(struct beiscsi_hba *phba,
-		uint32_t tag, struct be_mcc_wrb **wrb,
-		struct be_dma_mem *mbx_cmd_mem)
+int beiscsi_mccq_compl_wait(struct beiscsi_hba *phba,
+			    uint32_t tag, struct be_mcc_wrb **wrb,
+			    struct be_dma_mem *mbx_cmd_mem)
 {
 	int rc = 0;
-	uint32_t mcc_tag_response;
+	uint32_t mcc_tag_status;
 	uint16_t status = 0, addl_status = 0, wrb_num = 0;
 	struct be_mcc_wrb *temp_wrb;
 	struct be_cmd_req_hdr *mbx_hdr;
 	struct be_cmd_resp_hdr *mbx_resp_hdr;
 	struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
 
-	if (beiscsi_error(phba)) {
-		free_mcc_tag(&phba->ctrl, tag);
+	if (beiscsi_error(phba))
 		return -EPERM;
-	}
-
-	/* Set MBX Tag state to Active */
-	spin_lock(&phba->ctrl.mbox_lock);
-	phba->ctrl.ptag_state[tag].tag_state = MCC_TAG_STATE_RUNNING;
-	spin_unlock(&phba->ctrl.mbox_lock);
 
 	/* wait for the mccq completion */
 	rc = wait_event_interruptible_timeout(
 				phba->ctrl.mcc_wait[tag],
-				phba->ctrl.mcc_numtag[tag],
+				phba->ctrl.mcc_tag_status[tag],
 				msecs_to_jiffies(
 				BEISCSI_HOST_MBX_TIMEOUT));
-
+	/**
+	 * If MBOX cmd timeout expired, tag and resource allocated
+	 * for cmd is not freed until FW returns completion.
+	 */
 	if (rc <= 0) {
 		struct be_dma_mem *tag_mem;
-		/* Set MBX Tag state to timeout */
-		spin_lock(&phba->ctrl.mbox_lock);
-		phba->ctrl.ptag_state[tag].tag_state = MCC_TAG_STATE_TIMEOUT;
-		spin_unlock(&phba->ctrl.mbox_lock);
 
-		/* Store resource addr to be freed later */
+		/**
+		 * PCI/DMA memory allocated and posted in non-embedded mode
+		 * will have mbx_cmd_mem != NULL.
+		 * Save virtual and bus addresses for the command so that it
+		 * can be freed later.
+		 **/
 		tag_mem = &phba->ctrl.ptag_state[tag].tag_mem_state;
 		if (mbx_cmd_mem) {
 			tag_mem->size = mbx_cmd_mem->size;
@@ -191,28 +258,28 @@ int beiscsi_mccq_compl(struct beiscsi_hba *phba,
 		} else
 			tag_mem->size = 0;
 
+		/* first make tag_mem_state visible to all */
+		wmb();
+		set_bit(MCC_TAG_STATE_TIMEOUT,
+				&phba->ctrl.ptag_state[tag].tag_state);
+
 		beiscsi_log(phba, KERN_ERR,
 			    BEISCSI_LOG_INIT | BEISCSI_LOG_EH |
 			    BEISCSI_LOG_CONFIG,
 			    "BC_%d : MBX Cmd Completion timed out\n");
 		return -EBUSY;
-	} else {
-		rc = 0;
-		/* Set MBX Tag state to completed */
-		spin_lock(&phba->ctrl.mbox_lock);
-		phba->ctrl.ptag_state[tag].tag_state = MCC_TAG_STATE_COMPLETED;
-		spin_unlock(&phba->ctrl.mbox_lock);
 	}
 
-	mcc_tag_response = phba->ctrl.mcc_numtag[tag];
-	status = (mcc_tag_response & CQE_STATUS_MASK);
-	addl_status = ((mcc_tag_response & CQE_STATUS_ADDL_MASK) >>
+	rc = 0;
+	mcc_tag_status = phba->ctrl.mcc_tag_status[tag];
+	status = (mcc_tag_status & CQE_STATUS_MASK);
+	addl_status = ((mcc_tag_status & CQE_STATUS_ADDL_MASK) >>
 			CQE_STATUS_ADDL_SHIFT);
 
 	if (mbx_cmd_mem) {
 		mbx_hdr = (struct be_cmd_req_hdr *)mbx_cmd_mem->va;
 	} else {
-		wrb_num = (mcc_tag_response & CQE_STATUS_WRB_MASK) >>
+		wrb_num = (mcc_tag_status & CQE_STATUS_WRB_MASK) >>
 			   CQE_STATUS_WRB_SHIFT;
 		temp_wrb = (struct be_mcc_wrb *)queue_get_wrb(mccq, wrb_num);
 		mbx_hdr = embedded_payload(temp_wrb);
@@ -231,7 +298,7 @@ int beiscsi_mccq_compl(struct beiscsi_hba *phba,
 			    mbx_hdr->subsystem,
 			    mbx_hdr->opcode,
 			    status, addl_status);
-
+		rc = -EIO;
 		if (status == MCC_STATUS_INSUFFICIENT_BUFFER) {
 			mbx_resp_hdr = (struct be_cmd_resp_hdr *) mbx_hdr;
 			beiscsi_log(phba, KERN_WARNING,
@@ -241,70 +308,16 @@ int beiscsi_mccq_compl(struct beiscsi_hba *phba,
 				    "Resp_Len : %d Actual_Resp_Len : %d\n",
 				    mbx_resp_hdr->response_length,
 				    mbx_resp_hdr->actual_resp_len);
-
 			rc = -EAGAIN;
-			goto release_mcc_tag;
 		}
-		rc = -EIO;
 	}
 
-release_mcc_tag:
-	/* Release the MCC entry */
-	free_mcc_tag(&phba->ctrl, tag);
-
+	free_mcc_wrb(&phba->ctrl, tag);
 	return rc;
 }
 
-void free_mcc_tag(struct be_ctrl_info *ctrl, unsigned int tag)
-{
-	spin_lock(&ctrl->mbox_lock);
-	tag = tag & 0x000000FF;
-	ctrl->mcc_tag[ctrl->mcc_free_index] = tag;
-	if (ctrl->mcc_free_index == (MAX_MCC_CMD - 1))
-		ctrl->mcc_free_index = 0;
-	else
-		ctrl->mcc_free_index++;
-	ctrl->mcc_tag_available++;
-	spin_unlock(&ctrl->mbox_lock);
-}
-
-bool is_link_state_evt(u32 trailer)
-{
-	return (((trailer >> ASYNC_TRAILER_EVENT_CODE_SHIFT) &
-		  ASYNC_TRAILER_EVENT_CODE_MASK) ==
-		  ASYNC_EVENT_CODE_LINK_STATE);
-}
-
-static bool is_iscsi_evt(u32 trailer)
-{
-	return ((trailer >> ASYNC_TRAILER_EVENT_CODE_SHIFT) &
-		  ASYNC_TRAILER_EVENT_CODE_MASK) ==
-		  ASYNC_EVENT_CODE_ISCSI;
-}
-
-static int iscsi_evt_type(u32 trailer)
-{
-	return (trailer >> ASYNC_TRAILER_EVENT_TYPE_SHIFT) &
-		 ASYNC_TRAILER_EVENT_TYPE_MASK;
-}
-
-static inline bool be_mcc_compl_is_new(struct be_mcc_compl *compl)
-{
-	if (compl->flags != 0) {
-		compl->flags = le32_to_cpu(compl->flags);
-		WARN_ON((compl->flags & CQE_FLAGS_VALID_MASK) == 0);
-		return true;
-	} else
-		return false;
-}
-
-static inline void be_mcc_compl_use(struct be_mcc_compl *compl)
-{
-	compl->flags = 0;
-}
-
 /*
- * be_mcc_compl_process()- Check the MBX comapletion status
+ * beiscsi_process_mbox_compl()- Check the MBX completion status
  * @ctrl: Function specific MBX data structure
  * @compl: Completion status of MBX Command
  *
@@ -314,8 +327,8 @@ static inline void be_mcc_compl_use(struct be_mcc_compl *compl)
  * Success: Zero
  * Failure: Non-Zero
  **/
-static int be_mcc_compl_process(struct be_ctrl_info *ctrl,
-				struct be_mcc_compl *compl)
+static int beiscsi_process_mbox_compl(struct be_ctrl_info *ctrl,
+				      struct be_mcc_compl *compl)
 {
 	u16 compl_status, extd_status;
 	struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
@@ -323,206 +336,228 @@ static int be_mcc_compl_process(struct be_ctrl_info *ctrl,
 	struct be_cmd_req_hdr *hdr = embedded_payload(wrb);
 	struct be_cmd_resp_hdr *resp_hdr;
 
-	be_dws_le_to_cpu(compl, 4);
-
-	compl_status = (compl->status >> CQE_STATUS_COMPL_SHIFT) &
-					CQE_STATUS_COMPL_MASK;
-	if (compl_status != MCC_STATUS_SUCCESS) {
-		extd_status = (compl->status >> CQE_STATUS_EXTD_SHIFT) &
-						CQE_STATUS_EXTD_MASK;
-
+	/**
+	 * To check if valid bit is set, check the entire word as we don't know
+	 * the endianness of the data (old entry is host endian while a new
+	 * entry is little endian)
+	 */
+	if (!compl->flags) {
 		beiscsi_log(phba, KERN_ERR,
-			    BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
-			    "BC_%d : error in cmd completion: "
-			    "Subsystem : %d Opcode : %d "
-			    "status(compl/extd)=%d/%d\n",
-			    hdr->subsystem, hdr->opcode,
-			    compl_status, extd_status);
-
-		if (compl_status == MCC_STATUS_INSUFFICIENT_BUFFER) {
-			resp_hdr = (struct be_cmd_resp_hdr *) hdr;
-			if (resp_hdr->response_length)
-				return 0;
-		}
+				BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
+				"BC_%d : BMBX busy, no completion\n");
 		return -EBUSY;
 	}
-	return 0;
-}
-
-int be_mcc_compl_process_isr(struct be_ctrl_info *ctrl,
-				    struct be_mcc_compl *compl)
-{
-	struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
-	u16 compl_status, extd_status;
-	unsigned short tag;
+	compl->flags = le32_to_cpu(compl->flags);
+	WARN_ON((compl->flags & CQE_FLAGS_VALID_MASK) == 0);
 
+	/**
+	 * Just swap the status to host endian;
+	 * mcc tag is opaquely copied from mcc_wrb.
+	 */
 	be_dws_le_to_cpu(compl, 4);
-
 	compl_status = (compl->status >> CQE_STATUS_COMPL_SHIFT) &
-					CQE_STATUS_COMPL_MASK;
-	/* The ctrl.mcc_numtag[tag] is filled with
-	 * [31] = valid, [30:24] = Rsvd, [23:16] = wrb, [15:8] = extd_status,
-	 * [7:0] = compl_status
-	 */
-	tag = (compl->tag0 & 0x000000FF);
+		CQE_STATUS_COMPL_MASK;
 	extd_status = (compl->status >> CQE_STATUS_EXTD_SHIFT) &
-					CQE_STATUS_EXTD_MASK;
+		CQE_STATUS_EXTD_MASK;
+	/* Need to reset the entire word that houses the valid bit */
+	compl->flags = 0;
 
-	ctrl->mcc_numtag[tag]  = 0x80000000;
-	ctrl->mcc_numtag[tag] |= (compl->tag0 & 0x00FF0000);
-	ctrl->mcc_numtag[tag] |= (extd_status & 0x000000FF) << 8;
-	ctrl->mcc_numtag[tag] |= (compl_status & 0x000000FF);
+	if (compl_status == MCC_STATUS_SUCCESS)
+		return 0;
 
-	if (ctrl->ptag_state[tag].tag_state == MCC_TAG_STATE_RUNNING) {
-		wake_up_interruptible(&ctrl->mcc_wait[tag]);
-	} else if (ctrl->ptag_state[tag].tag_state == MCC_TAG_STATE_TIMEOUT) {
-		struct be_dma_mem *tag_mem;
-		tag_mem = &ctrl->ptag_state[tag].tag_mem_state;
+	beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
+		    "BC_%d : error in cmd completion: Subsystem : %d Opcode : %d status(compl/extd)=%d/%d\n",
+		    hdr->subsystem, hdr->opcode, compl_status, extd_status);
 
-		beiscsi_log(phba, KERN_WARNING,
-			    BEISCSI_LOG_MBOX | BEISCSI_LOG_INIT |
-			    BEISCSI_LOG_CONFIG,
-			    "BC_%d : MBX Completion for timeout Command "
-			    "from FW\n");
-		/* Check if memory needs to be freed */
-		if (tag_mem->size)
-			pci_free_consistent(ctrl->pdev, tag_mem->size,
-					    tag_mem->va, tag_mem->dma);
-
-		/* Change tag state */
-		spin_lock(&phba->ctrl.mbox_lock);
-		ctrl->ptag_state[tag].tag_state = MCC_TAG_STATE_COMPLETED;
-		spin_unlock(&phba->ctrl.mbox_lock);
-
-		/* Free MCC Tag */
-		free_mcc_tag(ctrl, tag);
+	if (compl_status == MCC_STATUS_INSUFFICIENT_BUFFER) {
+		/* if status is insufficient buffer, check the length */
+		resp_hdr = (struct be_cmd_resp_hdr *) hdr;
+		if (resp_hdr->response_length)
+			return 0;
 	}
-
-	return 0;
+	return -EINVAL;
 }
 
-static struct be_mcc_compl *be_mcc_compl_get(struct beiscsi_hba *phba)
+static void beiscsi_process_async_link(struct beiscsi_hba *phba,
+				       struct be_mcc_compl *compl)
 {
-	struct be_queue_info *mcc_cq = &phba->ctrl.mcc_obj.cq;
-	struct be_mcc_compl *compl = queue_tail_node(mcc_cq);
+	struct be_async_event_link_state *evt;
+
+	evt = (struct be_async_event_link_state *)compl;
 
-	if (be_mcc_compl_is_new(compl)) {
-		queue_tail_inc(mcc_cq);
-		return compl;
+	phba->port_speed = evt->port_speed;
+	/**
+	 * Check logical link status in ASYNC event.
+	 * This has been newly introduced in SKH-R Firmware 10.0.338.45.
+	 **/
+	if (evt->port_link_status & BE_ASYNC_LINK_UP_MASK) {
+		phba->state = BE_ADAPTER_LINK_UP | BE_ADAPTER_CHECK_BOOT;
+		phba->get_boot = BE_GET_BOOT_RETRIES;
+		__beiscsi_log(phba, KERN_ERR,
+			      "BC_%d : Link Up on Port %d tag 0x%x\n",
+			      evt->physical_port, evt->event_tag);
+	} else {
+		phba->state = BE_ADAPTER_LINK_DOWN;
+		__beiscsi_log(phba, KERN_ERR,
+			      "BC_%d : Link Down on Port %d tag 0x%x\n",
+			      evt->physical_port, evt->event_tag);
+		iscsi_host_for_each_session(phba->shost,
+					    beiscsi_fail_session);
 	}
-	return NULL;
 }
 
-/**
- * be2iscsi_fail_session(): Closing session with appropriate error
- * @cls_session: ptr to session
- *
- * Depending on adapter state appropriate error flag is passed.
- **/
-void be2iscsi_fail_session(struct iscsi_cls_session *cls_session)
+static char *beiscsi_port_misconf_event_msg[] = {
+	"Physical Link is functional.",
+	"Optics faulted/incorrectly installed/not installed - Reseat optics, if issue not resolved, replace.",
+	"Optics of two types installed - Remove one optic or install matching pair of optics.",
+	"Incompatible optics - Replace with compatible optics for card to function.",
+	"Unqualified optics - Replace with Avago optics for Warranty and Technical Support.",
+	"Uncertified optics - Replace with Avago Certified optics to enable link operation."
+};
+
+static void beiscsi_process_async_sli(struct beiscsi_hba *phba,
+				      struct be_mcc_compl *compl)
 {
-	struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
-	struct beiscsi_hba *phba = iscsi_host_priv(shost);
-	uint32_t iscsi_err_flag;
+	struct be_async_event_sli *async_sli;
+	u8 evt_type, state, old_state, le;
+	char *sev = KERN_WARNING;
+	char *msg = NULL;
+
+	evt_type = compl->flags >> ASYNC_TRAILER_EVENT_TYPE_SHIFT;
+	evt_type &= ASYNC_TRAILER_EVENT_TYPE_MASK;
+
+	/* processing only MISCONFIGURED physical port event */
+	if (evt_type != ASYNC_SLI_EVENT_TYPE_MISCONFIGURED)
+		return;
+
+	async_sli = (struct be_async_event_sli *)compl;
+	state = async_sli->event_data1 >>
+		 (phba->fw_config.phys_port * 8) & 0xff;
+	le = async_sli->event_data2 >>
+		 (phba->fw_config.phys_port * 8) & 0xff;
+
+	old_state = phba->optic_state;
+	phba->optic_state = state;
+
+	if (state >= ARRAY_SIZE(beiscsi_port_misconf_event_msg)) {
+		/* fw is reporting a state we don't know, log and return */
+		__beiscsi_log(phba, KERN_ERR,
+			    "BC_%d : Port %c: Unrecognized optic state 0x%x\n",
+			    phba->port_name, async_sli->event_data1);
+		return;
+	}
 
-	if (phba->state & BE_ADAPTER_STATE_SHUTDOWN)
-		iscsi_err_flag = ISCSI_ERR_INVALID_HOST;
-	else
-		iscsi_err_flag = ISCSI_ERR_CONN_FAILED;
+	if (ASYNC_SLI_LINK_EFFECT_VALID(le)) {
+		/* log link effect for unqualified-4, uncertified-5 optics */
+		if (state > 3)
+			msg = (ASYNC_SLI_LINK_EFFECT_STATE(le)) ?
+				" Link is non-operational." :
+				" Link is operational.";
+		/* 1 - info */
+		if (ASYNC_SLI_LINK_EFFECT_SEV(le) == 1)
+			sev = KERN_INFO;
+		/* 2 - error */
+		if (ASYNC_SLI_LINK_EFFECT_SEV(le) == 2)
+			sev = KERN_ERR;
+	}
 
-	iscsi_session_failure(cls_session->dd_data, ISCSI_ERR_CONN_FAILED);
+	if (old_state != phba->optic_state)
+		__beiscsi_log(phba, sev, "BC_%d : Port %c: %s%s\n",
+			      phba->port_name,
+			      beiscsi_port_misconf_event_msg[state],
+			      !msg ? "" : msg);
 }
 
-void beiscsi_async_link_state_process(struct beiscsi_hba *phba,
-		struct be_async_event_link_state *evt)
+void beiscsi_process_async_event(struct beiscsi_hba *phba,
+				struct be_mcc_compl *compl)
 {
-	if ((evt->port_link_status == ASYNC_EVENT_LINK_DOWN) ||
-	    ((evt->port_link_status & ASYNC_EVENT_LOGICAL) &&
-	     (evt->port_fault != BEISCSI_PHY_LINK_FAULT_NONE))) {
-		phba->state = BE_ADAPTER_LINK_DOWN;
-
-		beiscsi_log(phba, KERN_ERR,
-			    BEISCSI_LOG_CONFIG | BEISCSI_LOG_INIT,
-			    "BC_%d : Link Down on Port %d\n",
-			    evt->physical_port);
-
-		iscsi_host_for_each_session(phba->shost,
-					    be2iscsi_fail_session);
-	} else if ((evt->port_link_status & ASYNC_EVENT_LINK_UP) ||
-		    ((evt->port_link_status & ASYNC_EVENT_LOGICAL) &&
-		     (evt->port_fault == BEISCSI_PHY_LINK_FAULT_NONE))) {
-		phba->state = BE_ADAPTER_LINK_UP | BE_ADAPTER_CHECK_BOOT;
+	char *sev = KERN_INFO;
+	u8 evt_code;
+
+	/* interpret flags as an async trailer */
+	evt_code = compl->flags >> ASYNC_TRAILER_EVENT_CODE_SHIFT;
+	evt_code &= ASYNC_TRAILER_EVENT_CODE_MASK;
+	switch (evt_code) {
+	case ASYNC_EVENT_CODE_LINK_STATE:
+		beiscsi_process_async_link(phba, compl);
+		break;
+	case ASYNC_EVENT_CODE_ISCSI:
+		phba->state |= BE_ADAPTER_CHECK_BOOT;
 		phba->get_boot = BE_GET_BOOT_RETRIES;
-
-		beiscsi_log(phba, KERN_ERR,
-			    BEISCSI_LOG_CONFIG | BEISCSI_LOG_INIT,
-			    "BC_%d : Link UP on Port %d\n",
-			    evt->physical_port);
+		sev = KERN_ERR;
+		break;
+	case ASYNC_EVENT_CODE_SLI:
+		beiscsi_process_async_sli(phba, compl);
+		break;
+	default:
+		/* event not registered */
+		sev = KERN_ERR;
 	}
+
+	beiscsi_log(phba, sev, BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
+		    "BC_%d : ASYNC Event %x: status 0x%08x flags 0x%08x\n",
+		    evt_code, compl->status, compl->flags);
 }
 
-int beiscsi_process_mcc(struct beiscsi_hba *phba)
+int beiscsi_process_mcc_compl(struct be_ctrl_info *ctrl,
+			      struct be_mcc_compl *compl)
 {
-	struct be_mcc_compl *compl;
-	int num = 0, status = 0;
-	struct be_ctrl_info *ctrl = &phba->ctrl;
+	struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
+	u16 compl_status, extd_status;
+	struct be_dma_mem *tag_mem;
+	unsigned int tag, wrb_idx;
 
-	spin_lock_bh(&phba->ctrl.mcc_cq_lock);
-	while ((compl = be_mcc_compl_get(phba))) {
-		if (compl->flags & CQE_FLAGS_ASYNC_MASK) {
-			/* Interpret flags as an async trailer */
-			if (is_link_state_evt(compl->flags))
-				/* Interpret compl as a async link evt */
-				beiscsi_async_link_state_process(phba,
-				   (struct be_async_event_link_state *) compl);
-			else if (is_iscsi_evt(compl->flags)) {
-				switch (iscsi_evt_type(compl->flags)) {
-				case ASYNC_EVENT_NEW_ISCSI_TGT_DISC:
-				case ASYNC_EVENT_NEW_ISCSI_CONN:
-				case ASYNC_EVENT_NEW_TCP_CONN:
-					phba->state |= BE_ADAPTER_CHECK_BOOT;
-					phba->get_boot = BE_GET_BOOT_RETRIES;
-					beiscsi_log(phba, KERN_ERR,
-						    BEISCSI_LOG_CONFIG |
-						    BEISCSI_LOG_MBOX,
-						    "BC_%d : Async iscsi Event,"
-						    " flags handled = 0x%08x\n",
-						    compl->flags);
-					break;
-				default:
-					phba->state |= BE_ADAPTER_CHECK_BOOT;
-					phba->get_boot = BE_GET_BOOT_RETRIES;
-					beiscsi_log(phba, KERN_ERR,
-						    BEISCSI_LOG_CONFIG |
-						    BEISCSI_LOG_MBOX,
-						    "BC_%d : Unsupported Async"
-						    " Event, flags = 0x%08x\n",
-						    compl->flags);
-				}
-			} else
-				beiscsi_log(phba, KERN_ERR,
-					    BEISCSI_LOG_CONFIG |
-					    BEISCSI_LOG_MBOX,
-					    "BC_%d : Unsupported Async Event, flags"
-					    " = 0x%08x\n", compl->flags);
-
-		} else if (compl->flags & CQE_FLAGS_COMPLETED_MASK) {
-				status = be_mcc_compl_process(ctrl, compl);
-				atomic_dec(&phba->ctrl.mcc_obj.q.used);
-		}
-		be_mcc_compl_use(compl);
-		num++;
+	be_dws_le_to_cpu(compl, 4);
+	tag = (compl->tag0 & MCC_Q_CMD_TAG_MASK);
+	wrb_idx = (compl->tag0 & CQE_STATUS_WRB_MASK) >> CQE_STATUS_WRB_SHIFT;
+
+	if (!test_bit(MCC_TAG_STATE_RUNNING,
+		      &ctrl->ptag_state[tag].tag_state)) {
+		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_MBOX |
+			    BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG,
+			    "BC_%d : MBX cmd completed but not posted\n");
+		return 0;
 	}
 
-	if (num)
-		hwi_ring_cq_db(phba, phba->ctrl.mcc_obj.cq.id, num, 1, 0);
+	if (test_bit(MCC_TAG_STATE_TIMEOUT, &ctrl->ptag_state[tag].tag_state)) {
+		beiscsi_log(phba, KERN_WARNING,
+			    BEISCSI_LOG_MBOX | BEISCSI_LOG_INIT |
+			    BEISCSI_LOG_CONFIG,
+			    "BC_%d : MBX Completion for timeout Command from FW\n");
+		/**
+		 * Check for the size before freeing resource.
+		 * Only for non-embedded cmd, PCI resource is allocated.
+		 **/
+		tag_mem = &ctrl->ptag_state[tag].tag_mem_state;
+		if (tag_mem->size)
+			pci_free_consistent(ctrl->pdev, tag_mem->size,
+					tag_mem->va, tag_mem->dma);
+		free_mcc_wrb(ctrl, tag);
+		return 0;
+	}
 
-	spin_unlock_bh(&phba->ctrl.mcc_cq_lock);
-	return status;
+	compl_status = (compl->status >> CQE_STATUS_COMPL_SHIFT) &
+		       CQE_STATUS_COMPL_MASK;
+	extd_status = (compl->status >> CQE_STATUS_EXTD_SHIFT) &
+		      CQE_STATUS_EXTD_MASK;
+	/* The ctrl.mcc_tag_status[tag] is filled with
+	 * [31] = valid, [30:24] = Rsvd, [23:16] = wrb, [15:8] = extd_status,
+	 * [7:0] = compl_status
+	 */
+	ctrl->mcc_tag_status[tag] = CQE_VALID_MASK;
+	ctrl->mcc_tag_status[tag] |= (wrb_idx << CQE_STATUS_WRB_SHIFT);
+	ctrl->mcc_tag_status[tag] |= (extd_status << CQE_STATUS_ADDL_SHIFT) &
+				     CQE_STATUS_ADDL_MASK;
+	ctrl->mcc_tag_status[tag] |= (compl_status & CQE_STATUS_MASK);
+
+	/* write ordering forced in wake_up_interruptible */
+	clear_bit(MCC_TAG_STATE_RUNNING, &ctrl->ptag_state[tag].tag_state);
+	wake_up_interruptible(&ctrl->mcc_wait[tag]);
+	return 0;
 }
 
 /*
- * be_mcc_wait_compl()- Wait for MBX completion
+ * be_mcc_compl_poll()- Wait for MBX completion
  * @phba: driver private structure
  *
  * Wait till no more pending mcc requests are present
@@ -532,50 +567,57 @@ int beiscsi_process_mcc(struct beiscsi_hba *phba)
  * Failure: Non-Zero
  *
  **/
-static int be_mcc_wait_compl(struct beiscsi_hba *phba)
+int be_mcc_compl_poll(struct beiscsi_hba *phba, unsigned int tag)
 {
-	int i, status;
+	struct be_ctrl_info *ctrl = &phba->ctrl;
+	int i;
+
+	if (!test_bit(MCC_TAG_STATE_RUNNING,
+		      &ctrl->ptag_state[tag].tag_state)) {
+		beiscsi_log(phba, KERN_ERR,
+			    BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
+			    "BC_%d: tag %u state not running\n", tag);
+		return 0;
+	}
 	for (i = 0; i < mcc_timeout; i++) {
 		if (beiscsi_error(phba))
 			return -EIO;
 
-		status = beiscsi_process_mcc(phba);
-		if (status)
-			return status;
-
-		if (atomic_read(&phba->ctrl.mcc_obj.q.used) == 0)
+		beiscsi_process_mcc_cq(phba);
+		/* after polling, wrb and tag need to be released */
+		if (!test_bit(MCC_TAG_STATE_RUNNING,
+			      &ctrl->ptag_state[tag].tag_state)) {
+			free_mcc_wrb(ctrl, tag);
 			break;
+		}
 		udelay(100);
 	}
-	if (i == mcc_timeout) {
-		beiscsi_log(phba, KERN_ERR,
-			    BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
-			    "BC_%d : FW Timed Out\n");
-		phba->fw_timeout = true;
-		beiscsi_ue_detect(phba);
-		return -EBUSY;
-	}
-	return 0;
+
+	if (i < mcc_timeout)
+		return 0;
+
+	beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
+		    "BC_%d : FW Timed Out\n");
+	phba->fw_timeout = true;
+	beiscsi_ue_detect(phba);
+	return -EBUSY;
 }
 
-/*
- * be_mcc_notify_wait()- Notify and wait for Compl
- * @phba: driver private structure
- *
- * Notify MCC requests and wait for completion
- *
- * return
- * Success: 0
- * Failure: Non-Zero
- **/
-int be_mcc_notify_wait(struct beiscsi_hba *phba)
+void be_mcc_notify(struct beiscsi_hba *phba, unsigned int tag)
 {
-	be_mcc_notify(phba);
-	return be_mcc_wait_compl(phba);
+	struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
+	u32 val = 0;
+
+	set_bit(MCC_TAG_STATE_RUNNING, &phba->ctrl.ptag_state[tag].tag_state);
+	val |= mccq->id & DB_MCCQ_RING_ID_MASK;
+	val |= 1 << DB_MCCQ_NUM_POSTED_SHIFT;
+	/* make request available for DMA */
+	wmb();
+	iowrite32(val, phba->db_va + DB_MCCQ_OFFSET);
 }
 
 /*
- * be_mbox_db_ready_wait()- Check ready status
+ * be_mbox_db_ready_poll()- Check ready status
  * @ctrl: Function specific MBX data structure
  *
  * Check for the ready status of FW to send BMBX
@@ -585,49 +627,45 @@ int be_mcc_notify_wait(struct beiscsi_hba *phba)
  * Success: 0
  * Failure: Non-Zero
  **/
-static int be_mbox_db_ready_wait(struct be_ctrl_info *ctrl)
+static int be_mbox_db_ready_poll(struct be_ctrl_info *ctrl)
 {
-#define BEISCSI_MBX_RDY_BIT_TIMEOUT	4000	/* 4sec */
+	/* wait 30s for generic non-flash MBOX operation */
+#define BEISCSI_MBX_RDY_BIT_TIMEOUT	30000
 	void __iomem *db = ctrl->db + MPU_MAILBOX_DB_OFFSET;
 	struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
 	unsigned long timeout;
-	bool read_flag = false;
-	int ret = 0, i;
 	u32 ready;
-	DECLARE_WAIT_QUEUE_HEAD_ONSTACK(rdybit_check_q);
 
-	if (beiscsi_error(phba))
-		return -EIO;
+	/*
+	 * This BMBX busy wait path is used during init only.
+	 * For the commands executed during init, 5s should suffice.
+	 */
+	timeout = jiffies + msecs_to_jiffies(BEISCSI_MBX_RDY_BIT_TIMEOUT);
+	do {
+		if (beiscsi_error(phba))
+			return -EIO;
 
-	timeout = jiffies + (HZ * 110);
+		ready = ioread32(db);
+		if (ready == 0xffffffff)
+			return -EIO;
 
-	do {
-		for (i = 0; i < BEISCSI_MBX_RDY_BIT_TIMEOUT; i++) {
-			ready = ioread32(db) & MPU_MAILBOX_DB_RDY_MASK;
-			if (ready) {
-				read_flag = true;
-				break;
-			}
-			mdelay(1);
-		}
+		ready &= MPU_MAILBOX_DB_RDY_MASK;
+		if (ready)
+			return 0;
 
-		if (!read_flag) {
-			wait_event_timeout(rdybit_check_q,
-					  (read_flag != true),
-					   HZ * 5);
-		}
-	} while ((time_before(jiffies, timeout)) && !read_flag);
+		if (time_after(jiffies, timeout))
+			break;
+		msleep(20);
+	} while (!ready);
 
-	if (!read_flag) {
-		beiscsi_log(phba, KERN_ERR,
-			    BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
-			    "BC_%d : FW Timed Out\n");
-			phba->fw_timeout = true;
-			beiscsi_ue_detect(phba);
-			ret = -EBUSY;
-	}
+	beiscsi_log(phba, KERN_ERR,
+			BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
+			"BC_%d : FW Timed Out\n");
+
+	phba->fw_timeout = true;
+	beiscsi_ue_detect(phba);
 
-	return ret;
+	return -EBUSY;
 }
 
 /*
@@ -648,10 +686,8 @@ int be_mbox_notify(struct be_ctrl_info *ctrl)
 	void __iomem *db = ctrl->db + MPU_MAILBOX_DB_OFFSET;
 	struct be_dma_mem *mbox_mem = &ctrl->mbox_mem;
 	struct be_mcc_mailbox *mbox = mbox_mem->va;
-	struct be_mcc_compl *compl = &mbox->compl;
-	struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
 
-	status = be_mbox_db_ready_wait(ctrl);
+	status = be_mbox_db_ready_poll(ctrl);
 	if (status)
 		return status;
 
@@ -660,7 +696,7 @@ int be_mbox_notify(struct be_ctrl_info *ctrl)
 	val |= (upper_32_bits(mbox_mem->dma) >> 2) << 2;
 	iowrite32(val, db);
 
-	status = be_mbox_db_ready_wait(ctrl);
+	status = be_mbox_db_ready_poll(ctrl);
 	if (status)
 		return status;
 
@@ -670,81 +706,15 @@ int be_mbox_notify(struct be_ctrl_info *ctrl)
 	val |= (u32) (mbox_mem->dma >> 4) << 2;
 	iowrite32(val, db);
 
-	status = be_mbox_db_ready_wait(ctrl);
+	status = be_mbox_db_ready_poll(ctrl);
 	if (status)
 		return status;
 
-	if (be_mcc_compl_is_new(compl)) {
-		status = be_mcc_compl_process(ctrl, &mbox->compl);
-		be_mcc_compl_use(compl);
-		if (status) {
-			beiscsi_log(phba, KERN_ERR,
-				    BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
-				    "BC_%d : After be_mcc_compl_process\n");
-
-			return status;
-		}
-	} else {
-		beiscsi_log(phba, KERN_ERR,
-			    BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
-			    "BC_%d : Invalid Mailbox Completion\n");
-
-		return -EBUSY;
-	}
-	return 0;
-}
-
-/*
- * Insert the mailbox address into the doorbell in two steps
- * Polls on the mbox doorbell till a command completion (or a timeout) occurs
- */
-static int be_mbox_notify_wait(struct beiscsi_hba *phba)
-{
-	int status;
-	u32 val = 0;
-	void __iomem *db = phba->ctrl.db + MPU_MAILBOX_DB_OFFSET;
-	struct be_dma_mem *mbox_mem = &phba->ctrl.mbox_mem;
-	struct be_mcc_mailbox *mbox = mbox_mem->va;
-	struct be_mcc_compl *compl = &mbox->compl;
-	struct be_ctrl_info *ctrl = &phba->ctrl;
-
-	status = be_mbox_db_ready_wait(ctrl);
-	if (status)
-		return status;
-
-	val |= MPU_MAILBOX_DB_HI_MASK;
-	/* at bits 2 - 31 place mbox dma addr msb bits 34 - 63 */
-	val |= (upper_32_bits(mbox_mem->dma) >> 2) << 2;
-	iowrite32(val, db);
-
-	/* wait for ready to be set */
-	status = be_mbox_db_ready_wait(ctrl);
-	if (status != 0)
-		return status;
-
-	val = 0;
-	/* at bits 2 - 31 place mbox dma addr lsb bits 4 - 33 */
-	val |= (u32)(mbox_mem->dma >> 4) << 2;
-	iowrite32(val, db);
+	/* RDY is set; small delay before CQE read. */
+	udelay(1);
 
-	status = be_mbox_db_ready_wait(ctrl);
-	if (status != 0)
-		return status;
-
-	/* A cq entry has been made now */
-	if (be_mcc_compl_is_new(compl)) {
-		status = be_mcc_compl_process(ctrl, &mbox->compl);
-		be_mcc_compl_use(compl);
-		if (status)
-			return status;
-	} else {
-		beiscsi_log(phba, KERN_ERR,
-			    BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
-			    "BC_%d : invalid mailbox completion\n");
-
-		return -EBUSY;
-	}
-	return 0;
+	status = beiscsi_process_mbox_compl(ctrl, &mbox->compl);
+	return status;
 }
 
 void be_wrb_hdr_prepare(struct be_mcc_wrb *wrb, int payload_len,
@@ -809,21 +779,6 @@ struct be_mcc_wrb *wrb_from_mbox(struct be_dma_mem *mbox_mem)
 	return &((struct be_mcc_mailbox *)(mbox_mem->va))->wrb;
 }
 
-struct be_mcc_wrb *wrb_from_mccq(struct beiscsi_hba *phba)
-{
-	struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
-	struct be_mcc_wrb *wrb;
-
-	WARN_ON(atomic_read(&mccq->used) >= mccq->len);
-	wrb = queue_head_node(mccq);
-	memset(wrb, 0, sizeof(*wrb));
-	wrb->tag0 = (mccq->head & 0x000000FF) << 16;
-	queue_head_inc(mccq);
-	atomic_inc(&mccq->used);
-	return wrb;
-}
-
-
 int beiscsi_cmd_eq_create(struct be_ctrl_info *ctrl,
 			  struct be_queue_info *eq, int eq_delay)
 {
@@ -833,7 +788,7 @@ int beiscsi_cmd_eq_create(struct be_ctrl_info *ctrl,
 	struct be_dma_mem *q_mem = &eq->dma_mem;
 	int status;
 
-	spin_lock(&ctrl->mbox_lock);
+	mutex_lock(&ctrl->mbox_lock);
 	memset(wrb, 0, sizeof(*wrb));
 
 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
@@ -860,7 +815,7 @@ int beiscsi_cmd_eq_create(struct be_ctrl_info *ctrl,
 		eq->id = le16_to_cpu(resp->eq_id);
 		eq->created = true;
 	}
-	spin_unlock(&ctrl->mbox_lock);
+	mutex_unlock(&ctrl->mbox_lock);
 	return status;
 }
 
@@ -881,7 +836,7 @@ int be_cmd_fw_initialize(struct be_ctrl_info *ctrl)
 	int status;
 	u8 *endian_check;
 
-	spin_lock(&ctrl->mbox_lock);
+	mutex_lock(&ctrl->mbox_lock);
 	memset(wrb, 0, sizeof(*wrb));
 
 	endian_check = (u8 *) wrb;
@@ -900,7 +855,7 @@ int be_cmd_fw_initialize(struct be_ctrl_info *ctrl)
 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
 			    "BC_%d : be_cmd_fw_initialize Failed\n");
 
-	spin_unlock(&ctrl->mbox_lock);
+	mutex_unlock(&ctrl->mbox_lock);
 	return status;
 }
 
@@ -921,7 +876,7 @@ int be_cmd_fw_uninit(struct be_ctrl_info *ctrl)
 	int status;
 	u8 *endian_check;
 
-	spin_lock(&ctrl->mbox_lock);
+	mutex_lock(&ctrl->mbox_lock);
 	memset(wrb, 0, sizeof(*wrb));
 
 	endian_check = (u8 *) wrb;
@@ -941,7 +896,7 @@ int be_cmd_fw_uninit(struct be_ctrl_info *ctrl)
 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
 			    "BC_%d : be_cmd_fw_uninit Failed\n");
 
-	spin_unlock(&ctrl->mbox_lock);
+	mutex_unlock(&ctrl->mbox_lock);
 	return status;
 }
 
@@ -957,7 +912,7 @@ int beiscsi_cmd_cq_create(struct be_ctrl_info *ctrl,
 	void *ctxt = &req->context;
 	int status;
 
-	spin_lock(&ctrl->mbox_lock);
+	mutex_lock(&ctrl->mbox_lock);
 	memset(wrb, 0, sizeof(*wrb));
 
 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
@@ -1007,7 +962,7 @@ int beiscsi_cmd_cq_create(struct be_ctrl_info *ctrl,
 			    "BC_%d : In be_cmd_cq_create, status=ox%08x\n",
 			    status);
 
-	spin_unlock(&ctrl->mbox_lock);
+	mutex_unlock(&ctrl->mbox_lock);
 
 	return status;
 }
@@ -1025,13 +980,13 @@ int beiscsi_cmd_mccq_create(struct beiscsi_hba *phba,
 			struct be_queue_info *cq)
 {
 	struct be_mcc_wrb *wrb;
-	struct be_cmd_req_mcc_create *req;
+	struct be_cmd_req_mcc_create_ext *req;
 	struct be_dma_mem *q_mem = &mccq->dma_mem;
 	struct be_ctrl_info *ctrl;
 	void *ctxt;
 	int status;
 
-	spin_lock(&phba->ctrl.mbox_lock);
+	mutex_lock(&phba->ctrl.mbox_lock);
 	ctrl = &phba->ctrl;
 	wrb = wrb_from_mbox(&ctrl->mbox_mem);
 	memset(wrb, 0, sizeof(*wrb));
@@ -1041,9 +996,12 @@ int beiscsi_cmd_mccq_create(struct beiscsi_hba *phba,
 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
 
 	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
-			OPCODE_COMMON_MCC_CREATE, sizeof(*req));
+			OPCODE_COMMON_MCC_CREATE_EXT, sizeof(*req));
 
 	req->num_pages = PAGES_4K_SPANNED(q_mem->va, q_mem->size);
+	req->async_evt_bitmap = 1 << ASYNC_EVENT_CODE_LINK_STATE;
+	req->async_evt_bitmap |= 1 << ASYNC_EVENT_CODE_ISCSI;
+	req->async_evt_bitmap |= 1 << ASYNC_EVENT_CODE_SLI;
 
 	AMAP_SET_BITS(struct amap_mcc_context, fid, ctxt,
 		      PCI_FUNC(phba->pcidev->devfn));
@@ -1056,13 +1014,13 @@ int beiscsi_cmd_mccq_create(struct beiscsi_hba *phba,
 
 	be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
 
-	status = be_mbox_notify_wait(phba);
+	status = be_mbox_notify(ctrl);
 	if (!status) {
 		struct be_cmd_resp_mcc_create *resp = embedded_payload(wrb);
 		mccq->id = le16_to_cpu(resp->id);
 		mccq->created = true;
 	}
-	spin_unlock(&phba->ctrl.mbox_lock);
+	mutex_unlock(&phba->ctrl.mbox_lock);
 
 	return status;
 }
@@ -1080,7 +1038,7 @@ int beiscsi_cmd_q_destroy(struct be_ctrl_info *ctrl, struct be_queue_info *q,
 		    "BC_%d : In beiscsi_cmd_q_destroy "
 		    "queue_type : %d\n", queue_type);
 
-	spin_lock(&ctrl->mbox_lock);
+	mutex_lock(&ctrl->mbox_lock);
 	memset(wrb, 0, sizeof(*wrb));
 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
 
@@ -1110,7 +1068,7 @@ int beiscsi_cmd_q_destroy(struct be_ctrl_info *ctrl, struct be_queue_info *q,
 		opcode = OPCODE_COMMON_ISCSI_CFG_REMOVE_SGL_PAGES;
 		break;
 	default:
-		spin_unlock(&ctrl->mbox_lock);
+		mutex_unlock(&ctrl->mbox_lock);
 		BUG();
 		return -ENXIO;
 	}
@@ -1120,7 +1078,7 @@ int beiscsi_cmd_q_destroy(struct be_ctrl_info *ctrl, struct be_queue_info *q,
 
 	status = be_mbox_notify(ctrl);
 
-	spin_unlock(&ctrl->mbox_lock);
+	mutex_unlock(&ctrl->mbox_lock);
 	return status;
 }
 
@@ -1155,7 +1113,7 @@ int be_cmd_create_default_pdu_queue(struct be_ctrl_info *ctrl,
 	void *ctxt = &req->context;
 	int status;
 
-	spin_lock(&ctrl->mbox_lock);
+	mutex_lock(&ctrl->mbox_lock);
 	memset(wrb, 0, sizeof(*wrb));
 
 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
@@ -1227,7 +1185,7 @@ int be_cmd_create_default_pdu_queue(struct be_ctrl_info *ctrl,
 			defq_ring->doorbell_offset = resp->doorbell_offset;
 		}
 	}
-	spin_unlock(&ctrl->mbox_lock);
+	mutex_unlock(&ctrl->mbox_lock);
 
 	return status;
 }
@@ -1255,7 +1213,7 @@ int be_cmd_wrbq_create(struct be_ctrl_info *ctrl,
 	struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
 	int status;
 
-	spin_lock(&ctrl->mbox_lock);
+	mutex_lock(&ctrl->mbox_lock);
 	memset(wrb, 0, sizeof(*wrb));
 
 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
@@ -1286,7 +1244,7 @@ int be_cmd_wrbq_create(struct be_ctrl_info *ctrl,
 			pwrb_context->doorbell_offset = resp->doorbell_offset;
 		}
 	}
-	spin_unlock(&ctrl->mbox_lock);
+	mutex_unlock(&ctrl->mbox_lock);
 	return status;
 }
 
@@ -1297,7 +1255,7 @@ int be_cmd_iscsi_post_template_hdr(struct be_ctrl_info *ctrl,
 	struct be_post_template_pages_req *req = embedded_payload(wrb);
 	int status;
 
-	spin_lock(&ctrl->mbox_lock);
+	mutex_lock(&ctrl->mbox_lock);
 
 	memset(wrb, 0, sizeof(*wrb));
 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
@@ -1310,7 +1268,7 @@ int be_cmd_iscsi_post_template_hdr(struct be_ctrl_info *ctrl,
 	be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
 
 	status = be_mbox_notify(ctrl);
-	spin_unlock(&ctrl->mbox_lock);
+	mutex_unlock(&ctrl->mbox_lock);
 	return status;
 }
 
@@ -1320,7 +1278,7 @@ int be_cmd_iscsi_remove_template_hdr(struct be_ctrl_info *ctrl)
 	struct be_remove_template_pages_req *req = embedded_payload(wrb);
 	int status;
 
-	spin_lock(&ctrl->mbox_lock);
+	mutex_lock(&ctrl->mbox_lock);
 
 	memset(wrb, 0, sizeof(*wrb));
 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
@@ -1331,7 +1289,7 @@ int be_cmd_iscsi_remove_template_hdr(struct be_ctrl_info *ctrl)
 	req->type = BEISCSI_TEMPLATE_HDR_TYPE_ISCSI;
 
 	status = be_mbox_notify(ctrl);
-	spin_unlock(&ctrl->mbox_lock);
+	mutex_unlock(&ctrl->mbox_lock);
 	return status;
 }
 
@@ -1350,7 +1308,7 @@ int be_cmd_iscsi_post_sgl_pages(struct be_ctrl_info *ctrl,
 	if (num_pages == 0xff)
 		num_pages = 1;
 
-	spin_lock(&ctrl->mbox_lock);
+	mutex_lock(&ctrl->mbox_lock);
 	do {
 		memset(wrb, 0, sizeof(*wrb));
 		be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
@@ -1379,7 +1337,7 @@ int be_cmd_iscsi_post_sgl_pages(struct be_ctrl_info *ctrl,
 		}
 	} while (num_pages > 0);
 error:
-	spin_unlock(&ctrl->mbox_lock);
+	mutex_unlock(&ctrl->mbox_lock);
 	if (status != 0)
 		beiscsi_cmd_q_destroy(ctrl, NULL, QTYPE_SGL);
 	return status;
@@ -1392,15 +1350,15 @@ int beiscsi_cmd_reset_function(struct beiscsi_hba  *phba)
 	struct be_post_sgl_pages_req *req = embedded_payload(wrb);
 	int status;
 
-	spin_lock(&ctrl->mbox_lock);
+	mutex_lock(&ctrl->mbox_lock);
 
 	req = embedded_payload(wrb);
 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
 	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
 			   OPCODE_COMMON_FUNCTION_RESET, sizeof(*req));
-	status = be_mbox_notify_wait(phba);
+	status = be_mbox_notify(ctrl);
 
-	spin_unlock(&ctrl->mbox_lock);
+	mutex_unlock(&ctrl->mbox_lock);
 	return status;
 }
 
@@ -1417,21 +1375,20 @@ int beiscsi_cmd_reset_function(struct beiscsi_hba  *phba)
 int be_cmd_set_vlan(struct beiscsi_hba *phba,
 		     uint16_t vlan_tag)
 {
-	unsigned int tag = 0;
+	unsigned int tag;
 	struct be_mcc_wrb *wrb;
 	struct be_cmd_set_vlan_req *req;
 	struct be_ctrl_info *ctrl = &phba->ctrl;
 
-	spin_lock(&ctrl->mbox_lock);
-	tag = alloc_mcc_tag(phba);
-	if (!tag) {
-		spin_unlock(&ctrl->mbox_lock);
-		return tag;
+	if (mutex_lock_interruptible(&ctrl->mbox_lock))
+		return 0;
+	wrb = alloc_mcc_wrb(phba, &tag);
+	if (!wrb) {
+		mutex_unlock(&ctrl->mbox_lock);
+		return 0;
 	}
 
-	wrb = wrb_from_mccq(phba);
 	req = embedded_payload(wrb);
-	wrb->tag0 |= tag;
 	be_wrb_hdr_prepare(wrb, sizeof(*wrb), true, 0);
 	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
 			   OPCODE_COMMON_ISCSI_NTWK_SET_VLAN,
@@ -1440,8 +1397,8 @@ int be_cmd_set_vlan(struct beiscsi_hba *phba,
 	req->interface_hndl = phba->interface_handle;
 	req->vlan_priority = vlan_tag;
 
-	be_mcc_notify(phba);
-	spin_unlock(&ctrl->mbox_lock);
+	be_mcc_notify(phba, tag);
+	mutex_unlock(&ctrl->mbox_lock);
 
 	return tag;
 }