1 files changed, 6354 insertions, 457 deletions

diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index eb5c75c45ba4..acc43b061ba1 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -1,7 +1,7 @@
 /*******************************************************************
  * This file is part of the Emulex Linux Device Driver for         *
  * Fibre Channel Host Bus Adapters.                                *
- * Copyright (C) 2004-2008 Emulex.  All rights reserved.           *
+ * Copyright (C) 2004-2009 Emulex.  All rights reserved.           *
  * EMULEX and SLI are trademarks of Emulex.                        *
  * www.emulex.com                                                  *
  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
@@ -29,9 +29,12 @@
 #include <scsi/scsi_device.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_transport_fc.h>
+#include <scsi/fc/fc_fs.h>
 
+#include "lpfc_hw4.h"
 #include "lpfc_hw.h"
 #include "lpfc_sli.h"
+#include "lpfc_sli4.h"
 #include "lpfc_nl.h"
 #include "lpfc_disc.h"
 #include "lpfc_scsi.h"
@@ -40,24 +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 {
@@ -67,6 +53,350 @@ typedef enum _lpfc_iocb_type {
         LPFC_ABORT_IOCB
 } lpfc_iocb_type;
 
+
+/* Provide function prototypes local to this module. */
+static int lpfc_sli_issue_mbox_s4(struct lpfc_hba *, LPFC_MBOXQ_t *,
+                                  uint32_t);
+static int lpfc_sli4_read_rev(struct lpfc_hba *, LPFC_MBOXQ_t *,
+                            uint8_t *, uint32_t *);
+
+static IOCB_t *
+lpfc_get_iocb_from_iocbq(struct lpfc_iocbq *iocbq)
+{
+        return &iocbq->iocb;
+}
+
+/**
+ * lpfc_sli4_wq_put - Put a Work Queue Entry on an Work Queue
+ * @q: The Work Queue to operate on.
+ * @wqe: The work Queue Entry to put on the Work queue.
+ *
+ * This routine will copy the contents of @wqe to the next available entry on
+ * the @q. This function will then ring the Work Queue Doorbell to signal the
+ * HBA to start processing the Work Queue Entry. This function returns 0 if
+ * successful. If no entries are available on @q then this function will return
+ * -ENOMEM.
+ * The caller is expected to hold the hbalock when calling this routine.
+ **/
+static uint32_t
+lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe *wqe)
+{
+        union lpfc_wqe *temp_wqe = q->qe[q->host_index].wqe;
+        struct lpfc_register doorbell;
+        uint32_t host_index;
+
+        /* If the host has not yet processed the next entry then we are done */
+        if (((q->host_index + 1) % q->entry_count) == q->hba_index)
+                return -ENOMEM;
+        /* set consumption flag every once in a while */
+        if (!((q->host_index + 1) % LPFC_RELEASE_NOTIFICATION_INTERVAL))
+                bf_set(lpfc_wqe_gen_wqec, &wqe->generic, 1);
+
+        lpfc_sli_pcimem_bcopy(wqe, temp_wqe, q->entry_size);
+
+        /* Update the host index before invoking device */
+        host_index = q->host_index;
+        q->host_index = ((q->host_index + 1) % q->entry_count);
+
+        /* Ring Doorbell */
+        doorbell.word0 = 0;
+        bf_set(lpfc_wq_doorbell_num_posted, &doorbell, 1);
+        bf_set(lpfc_wq_doorbell_index, &doorbell, host_index);
+        bf_set(lpfc_wq_doorbell_id, &doorbell, q->queue_id);
+        writel(doorbell.word0, q->phba->sli4_hba.WQDBregaddr);
+        readl(q->phba->sli4_hba.WQDBregaddr); /* Flush */
+
+        return 0;
+}
+
+/**
+ * lpfc_sli4_wq_release - Updates internal hba index for WQ
+ * @q: The Work Queue to operate on.
+ * @index: The index to advance the hba index to.
+ *
+ * This routine will update the HBA index of a queue to reflect consumption of
+ * Work Queue Entries by the HBA. When the HBA indicates that it has consumed
+ * an entry the host calls this function to update the queue's internal
+ * pointers. This routine returns the number of entries that were consumed by
+ * the HBA.
+ **/
+static uint32_t
+lpfc_sli4_wq_release(struct lpfc_queue *q, uint32_t index)
+{
+        uint32_t released = 0;
+
+        if (q->hba_index == index)
+                return 0;
+        do {
+                q->hba_index = ((q->hba_index + 1) % q->entry_count);
+                released++;
+        } while (q->hba_index != index);
+        return released;
+}
+
+/**
+ * lpfc_sli4_mq_put - Put a Mailbox Queue Entry on an Mailbox Queue
+ * @q: The Mailbox Queue to operate on.
+ * @wqe: The Mailbox Queue Entry to put on the Work queue.
+ *
+ * This routine will copy the contents of @mqe to the next available entry on
+ * the @q. This function will then ring the Work Queue Doorbell to signal the
+ * HBA to start processing the Work Queue Entry. This function returns 0 if
+ * successful. If no entries are available on @q then this function will return
+ * -ENOMEM.
+ * The caller is expected to hold the hbalock when calling this routine.
+ **/
+static uint32_t
+lpfc_sli4_mq_put(struct lpfc_queue *q, struct lpfc_mqe *mqe)
+{
+        struct lpfc_mqe *temp_mqe = q->qe[q->host_index].mqe;
+        struct lpfc_register doorbell;
+        uint32_t host_index;
+
+        /* If the host has not yet processed the next entry then we are done */
+        if (((q->host_index + 1) % q->entry_count) == q->hba_index)
+                return -ENOMEM;
+        lpfc_sli_pcimem_bcopy(mqe, temp_mqe, q->entry_size);
+        /* Save off the mailbox pointer for completion */
+        q->phba->mbox = (MAILBOX_t *)temp_mqe;
+
+        /* Update the host index before invoking device */
+        host_index = q->host_index;
+        q->host_index = ((q->host_index + 1) % q->entry_count);
+
+        /* Ring Doorbell */
+        doorbell.word0 = 0;
+        bf_set(lpfc_mq_doorbell_num_posted, &doorbell, 1);
+        bf_set(lpfc_mq_doorbell_id, &doorbell, q->queue_id);
+        writel(doorbell.word0, q->phba->sli4_hba.MQDBregaddr);
+        readl(q->phba->sli4_hba.MQDBregaddr); /* Flush */
+        return 0;
+}
+
+/**
+ * lpfc_sli4_mq_release - Updates internal hba index for MQ
+ * @q: The Mailbox Queue to operate on.
+ *
+ * This routine will update the HBA index of a queue to reflect consumption of
+ * a Mailbox Queue Entry by the HBA. When the HBA indicates that it has consumed
+ * an entry the host calls this function to update the queue's internal
+ * pointers. This routine returns the number of entries that were consumed by
+ * the HBA.
+ **/
+static uint32_t
+lpfc_sli4_mq_release(struct lpfc_queue *q)
+{
+        /* Clear the mailbox pointer for completion */
+        q->phba->mbox = NULL;
+        q->hba_index = ((q->hba_index + 1) % q->entry_count);
+        return 1;
+}
+
+/**
+ * lpfc_sli4_eq_get - Gets the next valid EQE from a EQ
+ * @q: The Event Queue to get the first valid EQE from
+ *
+ * This routine will get the first valid Event Queue Entry from @q, update
+ * the queue's internal hba index, and return the EQE. If no valid EQEs are in
+ * the Queue (no more work to do), or the Queue is full of EQEs that have been
+ * processed, but not popped back to the HBA then this routine will return NULL.
+ **/
+static struct lpfc_eqe *
+lpfc_sli4_eq_get(struct lpfc_queue *q)
+{
+        struct lpfc_eqe *eqe = q->qe[q->hba_index].eqe;
+
+        /* If the next EQE is not valid then we are done */
+        if (!bf_get(lpfc_eqe_valid, eqe))
+                return NULL;
+        /* If the host has not yet processed the next entry then we are done */
+        if (((q->hba_index + 1) % q->entry_count) == q->host_index)
+                return NULL;
+
+        q->hba_index = ((q->hba_index + 1) % q->entry_count);
+        return eqe;
+}
+
+/**
+ * lpfc_sli4_eq_release - Indicates the host has finished processing an EQ
+ * @q: The Event Queue that the host has completed processing for.
+ * @arm: Indicates whether the host wants to arms this CQ.
+ *
+ * This routine will mark all Event Queue Entries on @q, from the last
+ * known completed entry to the last entry that was processed, as completed
+ * by clearing the valid bit for each completion queue entry. Then it will
+ * notify the HBA, by ringing the doorbell, that the EQEs have been processed.
+ * The internal host index in the @q will be updated by this routine to indicate
+ * that the host has finished processing the entries. The @arm parameter
+ * indicates that the queue should be rearmed when ringing the doorbell.
+ *
+ * This function will return the number of EQEs that were popped.
+ **/
+uint32_t
+lpfc_sli4_eq_release(struct lpfc_queue *q, bool arm)
+{
+        uint32_t released = 0;
+        struct lpfc_eqe *temp_eqe;
+        struct lpfc_register doorbell;
+
+        /* while there are valid entries */
+        while (q->hba_index != q->host_index) {
+                temp_eqe = q->qe[q->host_index].eqe;
+                bf_set(lpfc_eqe_valid, temp_eqe, 0);
+                released++;
+                q->host_index = ((q->host_index + 1) % q->entry_count);
+        }
+        if (unlikely(released == 0 && !arm))
+                return 0;
+
+        /* ring doorbell for number popped */
+        doorbell.word0 = 0;
+        if (arm) {
+                bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1);
+                bf_set(lpfc_eqcq_doorbell_eqci, &doorbell, 1);
+        }
+        bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, released);
+        bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_EVENT);
+        bf_set(lpfc_eqcq_doorbell_eqid, &doorbell, q->queue_id);
+        writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr);
+        return released;
+}
+
+/**
+ * lpfc_sli4_cq_get - Gets the next valid CQE from a CQ
+ * @q: The Completion Queue to get the first valid CQE from
+ *
+ * This routine will get the first valid Completion Queue Entry from @q, update
+ * the queue's internal hba index, and return the CQE. If no valid CQEs are in
+ * the Queue (no more work to do), or the Queue is full of CQEs that have been
+ * processed, but not popped back to the HBA then this routine will return NULL.
+ **/
+static struct lpfc_cqe *
+lpfc_sli4_cq_get(struct lpfc_queue *q)
+{
+        struct lpfc_cqe *cqe;
+
+        /* If the next CQE is not valid then we are done */
+        if (!bf_get(lpfc_cqe_valid, q->qe[q->hba_index].cqe))
+                return NULL;
+        /* If the host has not yet processed the next entry then we are done */
+        if (((q->hba_index + 1) % q->entry_count) == q->host_index)
+                return NULL;
+
+        cqe = q->qe[q->hba_index].cqe;
+        q->hba_index = ((q->hba_index + 1) % q->entry_count);
+        return cqe;
+}
+
+/**
+ * lpfc_sli4_cq_release - Indicates the host has finished processing a CQ
+ * @q: The Completion Queue that the host has completed processing for.
+ * @arm: Indicates whether the host wants to arms this CQ.
+ *
+ * This routine will mark all Completion queue entries on @q, from the last
+ * known completed entry to the last entry that was processed, as completed
+ * by clearing the valid bit for each completion queue entry. Then it will
+ * notify the HBA, by ringing the doorbell, that the CQEs have been processed.
+ * The internal host index in the @q will be updated by this routine to indicate
+ * that the host has finished processing the entries. The @arm parameter
+ * indicates that the queue should be rearmed when ringing the doorbell.
+ *
+ * This function will return the number of CQEs that were released.
+ **/
+uint32_t
+lpfc_sli4_cq_release(struct lpfc_queue *q, bool arm)
+{
+        uint32_t released = 0;
+        struct lpfc_cqe *temp_qe;
+        struct lpfc_register doorbell;
+
+        /* while there are valid entries */
+        while (q->hba_index != q->host_index) {
+                temp_qe = q->qe[q->host_index].cqe;
+                bf_set(lpfc_cqe_valid, temp_qe, 0);
+                released++;
+                q->host_index = ((q->host_index + 1) % q->entry_count);
+        }
+        if (unlikely(released == 0 && !arm))
+                return 0;
+
+        /* ring doorbell for number popped */
+        doorbell.word0 = 0;
+        if (arm)
+                bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1);
+        bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, released);
+        bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_COMPLETION);
+        bf_set(lpfc_eqcq_doorbell_cqid, &doorbell, q->queue_id);
+        writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr);
+        return released;
+}
+
+/**
+ * lpfc_sli4_rq_put - Put a Receive Buffer Queue Entry on a Receive Queue
+ * @q: The Header Receive Queue to operate on.
+ * @wqe: The Receive Queue Entry to put on the Receive queue.
+ *
+ * This routine will copy the contents of @wqe to the next available entry on
+ * the @q. This function will then ring the Receive Queue Doorbell to signal the
+ * HBA to start processing the Receive Queue Entry. This function returns the
+ * index that the rqe was copied to if successful. If no entries are available
+ * on @q then this function will return -ENOMEM.
+ * The caller is expected to hold the hbalock when calling this routine.
+ **/
+static int
+lpfc_sli4_rq_put(struct lpfc_queue *hq, struct lpfc_queue *dq,
+                 struct lpfc_rqe *hrqe, struct lpfc_rqe *drqe)
+{
+        struct lpfc_rqe *temp_hrqe = hq->qe[hq->host_index].rqe;
+        struct lpfc_rqe *temp_drqe = dq->qe[dq->host_index].rqe;
+        struct lpfc_register doorbell;
+        int put_index = hq->host_index;
+
+        if (hq->type != LPFC_HRQ || dq->type != LPFC_DRQ)
+                return -EINVAL;
+        if (hq->host_index != dq->host_index)
+                return -EINVAL;
+        /* If the host has not yet processed the next entry then we are done */
+        if (((hq->host_index + 1) % hq->entry_count) == hq->hba_index)
+                return -EBUSY;
+        lpfc_sli_pcimem_bcopy(hrqe, temp_hrqe, hq->entry_size);
+        lpfc_sli_pcimem_bcopy(drqe, temp_drqe, dq->entry_size);
+
+        /* Update the host index to point to the next slot */
+        hq->host_index = ((hq->host_index + 1) % hq->entry_count);
+        dq->host_index = ((dq->host_index + 1) % dq->entry_count);
+
+        /* Ring The Header Receive Queue Doorbell */
+        if (!(hq->host_index % LPFC_RQ_POST_BATCH)) {
+                doorbell.word0 = 0;
+                bf_set(lpfc_rq_doorbell_num_posted, &doorbell,
+                       LPFC_RQ_POST_BATCH);
+                bf_set(lpfc_rq_doorbell_id, &doorbell, hq->queue_id);
+                writel(doorbell.word0, hq->phba->sli4_hba.RQDBregaddr);
+        }
+        return put_index;
+}
+
+/**
+ * lpfc_sli4_rq_release - Updates internal hba index for RQ
+ * @q: The Header Receive Queue to operate on.
+ *
+ * This routine will update the HBA index of a queue to reflect consumption of
+ * one Receive Queue Entry by the HBA. When the HBA indicates that it has
+ * consumed an entry the host calls this function to update the queue's
+ * internal pointers. This routine returns the number of entries that were
+ * consumed by the HBA.
+ **/
+static uint32_t
+lpfc_sli4_rq_release(struct lpfc_queue *hq, struct lpfc_queue *dq)
+{
+        if ((hq->type != LPFC_HRQ) || (dq->type != LPFC_DRQ))
+                return 0;
+        hq->hba_index = ((hq->hba_index + 1) % hq->entry_count);
+        dq->hba_index = ((dq->hba_index + 1) % dq->entry_count);
+        return 1;
+}
+
 /**
  * lpfc_cmd_iocb - Get next command iocb entry in the ring
  * @phba: Pointer to HBA context object.
@@ -121,6 +451,76 @@ __lpfc_sli_get_iocbq(struct lpfc_hba *phba)
 }
 
 /**
+ * __lpfc_clear_active_sglq - Remove the active sglq for this XRI.
+ * @phba: Pointer to HBA context object.
+ * @xritag: XRI value.
+ *
+ * This function clears the sglq pointer from the array of acive
+ * sglq's. The xritag that is passed in is used to index into the
+ * array. Before the xritag can be used it needs to be adjusted
+ * by subtracting the xribase.
+ *
+ * Returns sglq ponter = success, NULL = Failure.
+ **/
+static struct lpfc_sglq *
+__lpfc_clear_active_sglq(struct lpfc_hba *phba, uint16_t xritag)
+{
+        uint16_t adj_xri;
+        struct lpfc_sglq *sglq;
+        adj_xri = xritag - phba->sli4_hba.max_cfg_param.xri_base;
+        if (adj_xri > phba->sli4_hba.max_cfg_param.max_xri)
+                return NULL;
+        sglq = phba->sli4_hba.lpfc_sglq_active_list[adj_xri];
+        phba->sli4_hba.lpfc_sglq_active_list[adj_xri] = NULL;
+        return sglq;
+}
+
+/**
+ * __lpfc_get_active_sglq - Get the active sglq for this XRI.
+ * @phba: Pointer to HBA context object.
+ * @xritag: XRI value.
+ *
+ * This function returns the sglq pointer from the array of acive
+ * sglq's. The xritag that is passed in is used to index into the
+ * array. Before the xritag can be used it needs to be adjusted
+ * by subtracting the xribase.
+ *
+ * Returns sglq ponter = success, NULL = Failure.
+ **/
+static struct lpfc_sglq *
+__lpfc_get_active_sglq(struct lpfc_hba *phba, uint16_t xritag)
+{
+        uint16_t adj_xri;
+        struct lpfc_sglq *sglq;
+        adj_xri = xritag - phba->sli4_hba.max_cfg_param.xri_base;
+        if (adj_xri > phba->sli4_hba.max_cfg_param.max_xri)
+                return NULL;
+        sglq =  phba->sli4_hba.lpfc_sglq_active_list[adj_xri];
+        return sglq;
+}
+
+/**
+ * __lpfc_sli_get_sglq - Allocates an iocb object from sgl pool
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called with hbalock held. This function
+ * Gets a new driver sglq object from the sglq list. If the
+ * list is not empty then it is successful, it returns pointer to the newly
+ * allocated sglq object else it returns NULL.
+ **/
+static struct lpfc_sglq *
+__lpfc_sli_get_sglq(struct lpfc_hba *phba)
+{
+        struct list_head *lpfc_sgl_list = &phba->sli4_hba.lpfc_sgl_list;
+        struct lpfc_sglq *sglq = NULL;
+        uint16_t adj_xri;
+        list_remove_head(lpfc_sgl_list, sglq, struct lpfc_sglq, list);
+        adj_xri = sglq->sli4_xritag - phba->sli4_hba.max_cfg_param.xri_base;
+        phba->sli4_hba.lpfc_sglq_active_list[adj_xri] = sglq;
+        return sglq;
+}
+
+/**
  * lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool
  * @phba: Pointer to HBA context object.
  *
@@ -142,7 +542,7 @@ lpfc_sli_get_iocbq(struct lpfc_hba *phba)
 }
 
 /**
- * __lpfc_sli_release_iocbq - Release iocb to the iocb pool
+ * __lpfc_sli_release_iocbq_s4 - Release iocb to the iocb pool
  * @phba: Pointer to HBA context object.
  * @iocbq: Pointer to driver iocb object.
  *
@@ -150,9 +550,62 @@ lpfc_sli_get_iocbq(struct lpfc_hba *phba)
  * iocb object to the iocb pool. The iotag in the iocb object
  * does not change for each use of the iocb object. This function
  * clears all other fields of the iocb object when it is freed.
+ * The sqlq structure that holds the xritag and phys and virtual
+ * mappings for the scatter gather list is retrieved from the
+ * active array of sglq. The get of the sglq pointer also clears
+ * the entry in the array. If the status of the IO indiactes that
+ * this IO was aborted then the sglq entry it put on the
+ * lpfc_abts_els_sgl_list until the CQ_ABORTED_XRI is received. If the
+ * IO has good status or fails for any other reason then the sglq
+ * entry is added to the free list (lpfc_sgl_list).
  **/
 static void
-__lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
+__lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
+{
+        struct lpfc_sglq *sglq;
+        size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
+        unsigned long iflag;
+
+        if (iocbq->sli4_xritag == NO_XRI)
+                sglq = NULL;
+        else
+                sglq = __lpfc_clear_active_sglq(phba, iocbq->sli4_xritag);
+        if (sglq)  {
+                if (iocbq->iocb_flag & LPFC_DRIVER_ABORTED
+                        || ((iocbq->iocb.ulpStatus == IOSTAT_LOCAL_REJECT)
+                        && (iocbq->iocb.un.ulpWord[4]
+                                == IOERR_SLI_ABORTED))) {
+                        spin_lock_irqsave(&phba->sli4_hba.abts_sgl_list_lock,
+                                        iflag);
+                        list_add(&sglq->list,
+                                &phba->sli4_hba.lpfc_abts_els_sgl_list);
+                        spin_unlock_irqrestore(
+                                &phba->sli4_hba.abts_sgl_list_lock, iflag);
+                } else
+                        list_add(&sglq->list, &phba->sli4_hba.lpfc_sgl_list);
+        }
+
+
+        /*
+         * Clean all volatile data fields, preserve iotag and node struct.
+         */
+        memset((char *)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
+        iocbq->sli4_xritag = NO_XRI;
+        list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
+}
+
+/**
+ * __lpfc_sli_release_iocbq_s3 - Release iocb to the iocb pool
+ * @phba: Pointer to HBA context object.
+ * @iocbq: Pointer to driver iocb object.
+ *
+ * This function is called with hbalock held to release driver
+ * iocb object to the iocb pool. The iotag in the iocb object
+ * does not change for each use of the iocb object. This function
+ * clears all other fields of the iocb object when it is freed.
+ **/
+static void
+__lpfc_sli_release_iocbq_s3(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
 {
         size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
 
@@ -160,10 +613,27 @@ __lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
          * Clean all volatile data fields, preserve iotag and node struct.
          */
         memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
+        iocbq->sli4_xritag = NO_XRI;
         list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
 }
 
 /**
+ * __lpfc_sli_release_iocbq - Release iocb to the iocb pool
+ * @phba: Pointer to HBA context object.
+ * @iocbq: Pointer to driver iocb object.
+ *
+ * This function is called with hbalock held to release driver
+ * iocb object to the iocb pool. The iotag in the iocb object
+ * does not change for each use of the iocb object. This function
+ * clears all other fields of the iocb object when it is freed.
+ **/
+static void
+__lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
+{
+        phba->__lpfc_sli_release_iocbq(phba, iocbq);
+}
+
+/**
  * lpfc_sli_release_iocbq - Release iocb to the iocb pool
  * @phba: Pointer to HBA context object.
  * @iocbq: Pointer to driver iocb object.
@@ -281,6 +751,14 @@ lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
         case CMD_GEN_REQUEST64_CR:
         case CMD_GEN_REQUEST64_CX:
         case CMD_XMIT_ELS_RSP64_CX:
+        case DSSCMD_IWRITE64_CR:
+        case DSSCMD_IWRITE64_CX:
+        case DSSCMD_IREAD64_CR:
+        case DSSCMD_IREAD64_CX:
+        case DSSCMD_INVALIDATE_DEK:
+        case DSSCMD_SET_KEK:
+        case DSSCMD_GET_KEK_ID:
+        case DSSCMD_GEN_XFER:
                 type = LPFC_SOL_IOCB;
                 break;
         case CMD_ABORT_XRI_CN:
@@ -348,7 +826,7 @@ lpfc_sli_ring_map(struct lpfc_hba *phba)
         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);
@@ -779,8 +1257,8 @@ lpfc_sli_hbqbuf_free_all(struct lpfc_hba *phba)
                 phba->hbqs[i].buffer_count = 0;
         }
         /* Return all HBQ buffer that are in-fly */
-        list_for_each_entry_safe(dmabuf, next_dmabuf,
-                        &phba->hbqbuf_in_list, list) {
+        list_for_each_entry_safe(dmabuf, next_dmabuf, &phba->rb_pend_list,
+                                 list) {
                 hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf);
                 list_del(&hbq_buf->dbuf.list);
                 if (hbq_buf->tag == -1) {
@@ -814,10 +1292,28 @@ lpfc_sli_hbqbuf_free_all(struct lpfc_hba *phba)
  * pointer to the hbq entry if it successfully post the buffer
  * else it will return NULL.
  **/
-static struct lpfc_hbq_entry *
+static int
 lpfc_sli_hbq_to_firmware(struct lpfc_hba *phba, uint32_t hbqno,
                          struct hbq_dmabuf *hbq_buf)
 {
+        return phba->lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buf);
+}
+
+/**
+ * lpfc_sli_hbq_to_firmware_s3 - Post the hbq buffer to SLI3 firmware
+ * @phba: Pointer to HBA context object.
+ * @hbqno: HBQ number.
+ * @hbq_buf: Pointer to HBQ buffer.
+ *
+ * This function is called with the hbalock held to post a hbq buffer to the
+ * firmware. If the function finds an empty slot in the HBQ, it will post the
+ * buffer and place it on the hbq_buffer_list. The function will return zero if
+ * it successfully post the buffer else it will return an error.
+ **/
+static int
+lpfc_sli_hbq_to_firmware_s3(struct lpfc_hba *phba, uint32_t hbqno,
+                            struct hbq_dmabuf *hbq_buf)
+{
         struct lpfc_hbq_entry *hbqe;
         dma_addr_t physaddr = hbq_buf->dbuf.phys;
 
@@ -838,8 +1334,40 @@ lpfc_sli_hbq_to_firmware(struct lpfc_hba *phba, uint32_t hbqno,
                                 /* flush */
                 readl(phba->hbq_put + hbqno);
                 list_add_tail(&hbq_buf->dbuf.list, &hbqp->hbq_buffer_list);
-        }
-        return hbqe;
+                return 0;
+        } else
+                return -ENOMEM;
+}
+
+/**
+ * lpfc_sli_hbq_to_firmware_s4 - Post the hbq buffer to SLI4 firmware
+ * @phba: Pointer to HBA context object.
+ * @hbqno: HBQ number.
+ * @hbq_buf: Pointer to HBQ buffer.
+ *
+ * This function is called with the hbalock held to post an RQE to the SLI4
+ * firmware. If able to post the RQE to the RQ it will queue the hbq entry to
+ * the hbq_buffer_list and return zero, otherwise it will return an error.
+ **/
+static int
+lpfc_sli_hbq_to_firmware_s4(struct lpfc_hba *phba, uint32_t hbqno,
+                            struct hbq_dmabuf *hbq_buf)
+{
+        int rc;
+        struct lpfc_rqe hrqe;
+        struct lpfc_rqe drqe;
+
+        hrqe.address_lo = putPaddrLow(hbq_buf->hbuf.phys);
+        hrqe.address_hi = putPaddrHigh(hbq_buf->hbuf.phys);
+        drqe.address_lo = putPaddrLow(hbq_buf->dbuf.phys);
+        drqe.address_hi = putPaddrHigh(hbq_buf->dbuf.phys);
+        rc = lpfc_sli4_rq_put(phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
+                              &hrqe, &drqe);
+        if (rc < 0)
+                return rc;
+        hbq_buf->tag = rc;
+        list_add_tail(&hbq_buf->dbuf.list, &phba->hbqs[hbqno].hbq_buffer_list);
+        return 0;
 }
 
 /* HBQ for ELS and CT traffic. */
@@ -914,7 +1442,7 @@ lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, uint32_t hbqno, uint32_t count)
                                  dbuf.list);
                 hbq_buffer->tag = (phba->hbqs[hbqno].buffer_count |
                                       (hbqno << 16));
-                if (lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) {
+                if (!lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) {
                         phba->hbqs[hbqno].buffer_count++;
                         posted++;
                 } else
@@ -965,6 +1493,25 @@ lpfc_sli_hbqbuf_init_hbqs(struct lpfc_hba *phba, uint32_t qno)
 }
 
 /**
+ * lpfc_sli_hbqbuf_get - Remove the first hbq off of an hbq list
+ * @phba: Pointer to HBA context object.
+ * @hbqno: HBQ number.
+ *
+ * This function removes the first hbq buffer on an hbq list and returns a
+ * pointer to that buffer. If it finds no buffers on the list it returns NULL.
+ **/
+static struct hbq_dmabuf *
+lpfc_sli_hbqbuf_get(struct list_head *rb_list)
+{
+        struct lpfc_dmabuf *d_buf;
+
+        list_remove_head(rb_list, d_buf, struct lpfc_dmabuf, list);
+        if (!d_buf)
+                return NULL;
+        return container_of(d_buf, struct hbq_dmabuf, dbuf);
+}
+
+/**
  * lpfc_sli_hbqbuf_find - Find the hbq buffer associated with a tag
  * @phba: Pointer to HBA context object.
  * @tag: Tag of the hbq buffer.
@@ -985,12 +1532,15 @@ lpfc_sli_hbqbuf_find(struct lpfc_hba *phba, uint32_t tag)
         if (hbqno >= LPFC_MAX_HBQS)
                 return NULL;
 
+        spin_lock_irq(&phba->hbalock);
         list_for_each_entry(d_buf, &phba->hbqs[hbqno].hbq_buffer_list, list) {
                 hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
                 if (hbq_buf->tag == tag) {
+                        spin_unlock_irq(&phba->hbalock);
                         return hbq_buf;
                 }
         }
+        spin_unlock_irq(&phba->hbalock);
         lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_VPORT,
                         "1803 Bad hbq tag. Data: x%x x%x\n",
                         tag, phba->hbqs[tag >> 16].buffer_count);
@@ -1013,9 +1563,8 @@ lpfc_sli_free_hbq(struct lpfc_hba *phba, struct hbq_dmabuf *hbq_buffer)
 
         if (hbq_buffer) {
                 hbqno = hbq_buffer->tag >> 16;
-                if (!lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) {
+                if (lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer))
                         (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
-                }
         }
 }
 
@@ -1086,6 +1635,15 @@ lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
         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:
@@ -1106,7 +1664,7 @@ lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
  * 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;
@@ -1140,7 +1698,7 @@ void
 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);
@@ -1150,24 +1708,30 @@ lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
                 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);
 }
 
 /**
@@ -1204,7 +1768,7 @@ lpfc_sli_handle_mb_event(struct lpfc_hba *phba)
                 if (pmb == NULL)
                         break;
 
-                pmbox = &pmb->mb;
+                pmbox = &pmb->u.mb;
 
                 if (pmbox->mbxCommand != MBX_HEARTBEAT) {
                         if (pmb->vport) {
@@ -1233,9 +1797,10 @@ lpfc_sli_handle_mb_event(struct lpfc_hba *phba)
                         /* 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);
@@ -1250,29 +1815,29 @@ lpfc_sli_handle_mb_event(struct lpfc_hba *phba)
                                                 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],
@@ -1317,6 +1882,45 @@ lpfc_sli_get_buff(struct lpfc_hba *phba,
         return &hbq_entry->dbuf;
 }
 
+/**
+ * lpfc_complete_unsol_iocb - Complete an unsolicited sequence
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @saveq: Pointer to the iocbq struct representing the sequence starting frame.
+ * @fch_r_ctl: the r_ctl for the first frame of the sequence.
+ * @fch_type: the type for the first frame of the sequence.
+ *
+ * This function is called with no lock held. This function uses the r_ctl and
+ * type of the received sequence to find the correct callback function to call
+ * to process the sequence.
+ **/
+static int
+lpfc_complete_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+                         struct lpfc_iocbq *saveq, uint32_t fch_r_ctl,
+                         uint32_t fch_type)
+{
+        int i;
+
+        /* unSolicited Responses */
+        if (pring->prt[0].profile) {
+                if (pring->prt[0].lpfc_sli_rcv_unsol_event)
+                        (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring,
+                                                                        saveq);
+                return 1;
+        }
+        /* We must search, based on rctl / type
+           for the right routine */
+        for (i = 0; i < pring->num_mask; i++) {
+                if ((pring->prt[i].rctl == fch_r_ctl) &&
+                    (pring->prt[i].type == fch_type)) {
+                        if (pring->prt[i].lpfc_sli_rcv_unsol_event)
+                                (pring->prt[i].lpfc_sli_rcv_unsol_event)
+                                                (phba, pring, saveq);
+                        return 1;
+                }
+        }
+        return 0;
+}
 
 /**
  * lpfc_sli_process_unsol_iocb - Unsolicited iocb handler
@@ -1339,7 +1943,7 @@ lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
         IOCB_t           * irsp;
         WORD5            * w5p;
         uint32_t           Rctl, Type;
-        uint32_t           match, i;
+        uint32_t           match;
         struct lpfc_iocbq *iocbq;
         struct lpfc_dmabuf *dmzbuf;
 
@@ -1482,35 +2086,12 @@ lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                 }
         }
 
-        /* unSolicited Responses */
-        if (pring->prt[0].profile) {
-                if (pring->prt[0].lpfc_sli_rcv_unsol_event)
-                        (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring,
-                                                                        saveq);
-                match = 1;
-        } else {
-                /* We must search, based on rctl / type
-                   for the right routine */
-                for (i = 0; i < pring->num_mask; i++) {
-                        if ((pring->prt[i].rctl == Rctl)
-                            && (pring->prt[i].type == Type)) {
-                                if (pring->prt[i].lpfc_sli_rcv_unsol_event)
-                                        (pring->prt[i].lpfc_sli_rcv_unsol_event)
-                                                        (phba, pring, saveq);
-                                match = 1;
-                                break;
-                        }
-                }
-        }
-        if (match == 0) {
-                /* Unexpected Rctl / Type received */
-                /* Ring <ringno> handler: unexpected
-                   Rctl <Rctl> Type <Type> received */
+        if (!lpfc_complete_unsol_iocb(phba, pring, saveq, Rctl, Type))
                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
                                 "0313 Ring %d handler: unexpected Rctl x%x "
                                 "Type x%x received\n",
                                 pring->ringno, Rctl, Type);
-        }
+
         return 1;
 }
 
@@ -1552,6 +2133,37 @@ lpfc_sli_iocbq_lookup(struct lpfc_hba *phba,
 }
 
 /**
+ * lpfc_sli_iocbq_lookup_by_tag - Find command iocb for the iotag
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @iotag: IOCB tag.
+ *
+ * This function looks up the iocb_lookup table to get the command iocb
+ * corresponding to the given iotag. This function is called with the
+ * hbalock held.
+ * This function returns the command iocb object if it finds the command
+ * iocb else returns NULL.
+ **/
+static struct lpfc_iocbq *
+lpfc_sli_iocbq_lookup_by_tag(struct lpfc_hba *phba,
+                             struct lpfc_sli_ring *pring, uint16_t iotag)
+{
+        struct lpfc_iocbq *cmd_iocb;
+
+        if (iotag != 0 && iotag <= phba->sli.last_iotag) {
+                cmd_iocb = phba->sli.iocbq_lookup[iotag];
+                list_del_init(&cmd_iocb->list);
+                pring->txcmplq_cnt--;
+                return cmd_iocb;
+        }
+
+        lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                        "0372 iotag x%x is out off range: max iotag (x%x)\n",
+                        iotag, phba->sli.last_iotag);
+        return NULL;
+}
+
+/**
  * lpfc_sli_process_sol_iocb - process solicited iocb completion
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
@@ -1954,7 +2566,7 @@ lpfc_sli_handle_fast_ring_event(struct lpfc_hba *phba,
                         if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
                                 (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) {
                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
-                                lpfc_rampdown_queue_depth(phba);
+                                phba->lpfc_rampdown_queue_depth(phba);
                                 spin_lock_irqsave(&phba->hbalock, iflag);
                         }
 
@@ -2068,39 +2680,215 @@ lpfc_sli_handle_fast_ring_event(struct lpfc_hba *phba,
 }
 
 /**
- * lpfc_sli_handle_slow_ring_event - Handle ring events for non-FCP rings
+ * lpfc_sli_sp_handle_rspiocb - Handle slow-path response iocb
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @rspiocbp: Pointer to driver response IOCB object.
+ *
+ * This function is called from the worker thread when there is a slow-path
+ * response IOCB to process. This function chains all the response iocbs until
+ * seeing the iocb with the LE bit set. The function will call
+ * lpfc_sli_process_sol_iocb function if the response iocb indicates a
+ * completion of a command iocb. The function will call the
+ * lpfc_sli_process_unsol_iocb function if this is an unsolicited iocb.
+ * The function frees the resources or calls the completion handler if this
+ * iocb is an abort completion. The function returns NULL when the response
+ * iocb has the LE bit set and all the chained iocbs are processed, otherwise
+ * this function shall chain the iocb on to the iocb_continueq and return the
+ * response iocb passed in.
+ **/
+static struct lpfc_iocbq *
+lpfc_sli_sp_handle_rspiocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+                        struct lpfc_iocbq *rspiocbp)
+{
+        struct lpfc_iocbq *saveq;
+        struct lpfc_iocbq *cmdiocbp;
+        struct lpfc_iocbq *next_iocb;
+        IOCB_t *irsp = NULL;
+        uint32_t free_saveq;
+        uint8_t iocb_cmd_type;
+        lpfc_iocb_type type;
+        unsigned long iflag;
+        int rc;
+
+        spin_lock_irqsave(&phba->hbalock, iflag);
+        /* First add the response iocb to the countinueq list */
+        list_add_tail(&rspiocbp->list, &(pring->iocb_continueq));
+        pring->iocb_continueq_cnt++;
+
+        /* Now, determine whetehr the list is completed for processing */
+        irsp = &rspiocbp->iocb;
+        if (irsp->ulpLe) {
+                /*
+                 * By default, the driver expects to free all resources
+                 * associated with this iocb completion.
+                 */
+                free_saveq = 1;
+                saveq = list_get_first(&pring->iocb_continueq,
+                                       struct lpfc_iocbq, list);
+                irsp = &(saveq->iocb);
+                list_del_init(&pring->iocb_continueq);
+                pring->iocb_continueq_cnt = 0;
+
+                pring->stats.iocb_rsp++;
+
+                /*
+                 * If resource errors reported from HBA, reduce
+                 * queuedepths of the SCSI device.
+                 */
+                if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
+                    (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) {
+                        spin_unlock_irqrestore(&phba->hbalock, iflag);
+                        phba->lpfc_rampdown_queue_depth(phba);
+                        spin_lock_irqsave(&phba->hbalock, iflag);
+                }
+
+                if (irsp->ulpStatus) {
+                        /* Rsp ring <ringno> error: IOCB */
+                        lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+                                        "0328 Rsp Ring %d error: "
+                                        "IOCB Data: "
+                                        "x%x x%x x%x x%x "
+                                        "x%x x%x x%x x%x "
+                                        "x%x x%x x%x x%x "
+                                        "x%x x%x x%x x%x\n",
+                                        pring->ringno,
+                                        irsp->un.ulpWord[0],
+                                        irsp->un.ulpWord[1],
+                                        irsp->un.ulpWord[2],
+                                        irsp->un.ulpWord[3],
+                                        irsp->un.ulpWord[4],
+                                        irsp->un.ulpWord[5],
+                                        *(((uint32_t *) irsp) + 6),
+                                        *(((uint32_t *) irsp) + 7),
+                                        *(((uint32_t *) irsp) + 8),
+                                        *(((uint32_t *) irsp) + 9),
+                                        *(((uint32_t *) irsp) + 10),
+                                        *(((uint32_t *) irsp) + 11),
+                                        *(((uint32_t *) irsp) + 12),
+                                        *(((uint32_t *) irsp) + 13),
+                                        *(((uint32_t *) irsp) + 14),
+                                        *(((uint32_t *) irsp) + 15));
+                }
+
+                /*
+                 * Fetch the IOCB command type and call the correct completion
+                 * routine. Solicited and Unsolicited IOCBs on the ELS ring
+                 * get freed back to the lpfc_iocb_list by the discovery
+                 * kernel thread.
+                 */
+                iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
+                type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
+                switch (type) {
+                case LPFC_SOL_IOCB:
+                        spin_unlock_irqrestore(&phba->hbalock, iflag);
+                        rc = lpfc_sli_process_sol_iocb(phba, pring, saveq);
+                        spin_lock_irqsave(&phba->hbalock, iflag);
+                        break;
+
+                case LPFC_UNSOL_IOCB:
+                        spin_unlock_irqrestore(&phba->hbalock, iflag);
+                        rc = lpfc_sli_process_unsol_iocb(phba, pring, saveq);
+                        spin_lock_irqsave(&phba->hbalock, iflag);
+                        if (!rc)
+                                free_saveq = 0;
+                        break;
+
+                case LPFC_ABORT_IOCB:
+                        cmdiocbp = NULL;
+                        if (irsp->ulpCommand != CMD_XRI_ABORTED_CX)
+                                cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring,
+                                                                 saveq);
+                        if (cmdiocbp) {
+                                /* Call the specified completion routine */
+                                if (cmdiocbp->iocb_cmpl) {
+                                        spin_unlock_irqrestore(&phba->hbalock,
+                                                               iflag);
+                                        (cmdiocbp->iocb_cmpl)(phba, cmdiocbp,
+                                                              saveq);
+                                        spin_lock_irqsave(&phba->hbalock,
+                                                          iflag);
+                                } else
+                                        __lpfc_sli_release_iocbq(phba,
+                                                                 cmdiocbp);
+                        }
+                        break;
+
+                case LPFC_UNKNOWN_IOCB:
+                        if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
+                                char adaptermsg[LPFC_MAX_ADPTMSG];
+                                memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
+                                memcpy(&adaptermsg[0], (uint8_t *)irsp,
+                                       MAX_MSG_DATA);
+                                dev_warn(&((phba->pcidev)->dev),
+                                         "lpfc%d: %s\n",
+                                         phba->brd_no, adaptermsg);
+                        } else {
+                                /* Unknown IOCB command */
+                                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                                "0335 Unknown IOCB "
+                                                "command Data: x%x "
+                                                "x%x x%x x%x\n",
+                                                irsp->ulpCommand,
+                                                irsp->ulpStatus,
+                                                irsp->ulpIoTag,
+                                                irsp->ulpContext);
+                        }
+                        break;
+                }
+
+                if (free_saveq) {
+                        list_for_each_entry_safe(rspiocbp, next_iocb,
+                                                 &saveq->list, list) {
+                                list_del(&rspiocbp->list);
+                                __lpfc_sli_release_iocbq(phba, rspiocbp);
+                        }
+                        __lpfc_sli_release_iocbq(phba, saveq);
+                }
+                rspiocbp = NULL;
+        }
+        spin_unlock_irqrestore(&phba->hbalock, iflag);
+        return rspiocbp;
+}
+
+/**
+ * lpfc_sli_handle_slow_ring_event - Wrapper func for handling slow-path iocbs
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  * @mask: Host attention register mask for this ring.
  *
- * This function is called from the worker thread when there is a ring
- * event for non-fcp rings. The caller does not hold any lock .
- * The function processes each response iocb in the response ring until it
- * finds an iocb with LE bit set and chains all the iocbs upto the iocb with
- * LE bit set. The function will call lpfc_sli_process_sol_iocb function if the
- * response iocb indicates a completion of a command iocb. The function
- * will call lpfc_sli_process_unsol_iocb function if this is an unsolicited
- * iocb. The function frees the resources or calls the completion handler if
- * this iocb is an abort completion. The function returns 0 when the allocated
- * iocbs are not freed, otherwise returns 1.
+ * This routine wraps the actual slow_ring event process routine from the
+ * API jump table function pointer from the lpfc_hba struct.
  **/
-int
+void
 lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba,
                                 struct lpfc_sli_ring *pring, uint32_t mask)
 {
+        phba->lpfc_sli_handle_slow_ring_event(phba, pring, mask);
+}
+
+/**
+ * lpfc_sli_handle_slow_ring_event_s3 - Handle SLI3 ring event for non-FCP rings
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @mask: Host attention register mask for this ring.
+ *
+ * This function is called from the worker thread when there is a ring event
+ * for non-fcp rings. The caller does not hold any lock. The function will
+ * remove each response iocb in the response ring and calls the handle
+ * response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it.
+ **/
+static void
+lpfc_sli_handle_slow_ring_event_s3(struct lpfc_hba *phba,
+                                   struct lpfc_sli_ring *pring, uint32_t mask)
+{
         struct lpfc_pgp *pgp;
         IOCB_t *entry;
         IOCB_t *irsp = NULL;
         struct lpfc_iocbq *rspiocbp = NULL;
-        struct lpfc_iocbq *next_iocb;
-        struct lpfc_iocbq *cmdiocbp;
-        struct lpfc_iocbq *saveq;
-        uint8_t iocb_cmd_type;
-        lpfc_iocb_type type;
-        uint32_t status, free_saveq;
         uint32_t portRspPut, portRspMax;
-        int rc = 1;
         unsigned long iflag;
+        uint32_t status;
 
         pgp = &phba->port_gp[pring->ringno];
         spin_lock_irqsave(&phba->hbalock, iflag);
@@ -2128,7 +2916,7 @@ lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba,
                 phba->work_hs = HS_FFER3;
                 lpfc_handle_eratt(phba);
 
-                return 1;
+                return;
         }
 
         rmb();
@@ -2173,138 +2961,10 @@ lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba,
 
                 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
 
-                list_add_tail(&rspiocbp->list, &(pring->iocb_continueq));
-
-                pring->iocb_continueq_cnt++;
-                if (irsp->ulpLe) {
-                        /*
-                         * By default, the driver expects to free all resources
-                         * associated with this iocb completion.
-                         */
-                        free_saveq = 1;
-                        saveq = list_get_first(&pring->iocb_continueq,
-                                               struct lpfc_iocbq, list);
-                        irsp = &(saveq->iocb);
-                        list_del_init(&pring->iocb_continueq);
-                        pring->iocb_continueq_cnt = 0;
-
-                        pring->stats.iocb_rsp++;
-
-                        /*
-                         * If resource errors reported from HBA, reduce
-                         * queuedepths of the SCSI device.
-                         */
-                        if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
-                             (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) {
-                                spin_unlock_irqrestore(&phba->hbalock, iflag);
-                                lpfc_rampdown_queue_depth(phba);
-                                spin_lock_irqsave(&phba->hbalock, iflag);
-                        }
-
-                        if (irsp->ulpStatus) {
-                                /* Rsp ring <ringno> error: IOCB */
-                                lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
-                                                "0328 Rsp Ring %d error: "
-                                                "IOCB Data: "
-                                                "x%x x%x x%x x%x "
-                                                "x%x x%x x%x x%x "
-                                                "x%x x%x x%x x%x "
-                                                "x%x x%x x%x x%x\n",
-                                                pring->ringno,
-                                                irsp->un.ulpWord[0],
-                                                irsp->un.ulpWord[1],
-                                                irsp->un.ulpWord[2],
-                                                irsp->un.ulpWord[3],
-                                                irsp->un.ulpWord[4],
-                                                irsp->un.ulpWord[5],
-                                                *(((uint32_t *) irsp) + 6),
-                                                *(((uint32_t *) irsp) + 7),
-                                                *(((uint32_t *) irsp) + 8),
-                                                *(((uint32_t *) irsp) + 9),
-                                                *(((uint32_t *) irsp) + 10),
-                                                *(((uint32_t *) irsp) + 11),
-                                                *(((uint32_t *) irsp) + 12),
-                                                *(((uint32_t *) irsp) + 13),
-                                                *(((uint32_t *) irsp) + 14),
-                                                *(((uint32_t *) irsp) + 15));
-                        }
-
-                        /*
-                         * Fetch the IOCB command type and call the correct
-                         * completion routine.  Solicited and Unsolicited
-                         * IOCBs on the ELS ring get freed back to the
-                         * lpfc_iocb_list by the discovery kernel thread.
-                         */
-                        iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
-                        type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
-                        if (type == LPFC_SOL_IOCB) {
-                                spin_unlock_irqrestore(&phba->hbalock, iflag);
-                                rc = lpfc_sli_process_sol_iocb(phba, pring,
-                                                               saveq);
-                                spin_lock_irqsave(&phba->hbalock, iflag);
-                        } else if (type == LPFC_UNSOL_IOCB) {
-                                spin_unlock_irqrestore(&phba->hbalock, iflag);
-                                rc = lpfc_sli_process_unsol_iocb(phba, pring,
-                                                                 saveq);
-                                spin_lock_irqsave(&phba->hbalock, iflag);
-                                if (!rc)
-                                        free_saveq = 0;
-                        } else if (type == LPFC_ABORT_IOCB) {
-                                if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
-                                    ((cmdiocbp =
-                                      lpfc_sli_iocbq_lookup(phba, pring,
-                                                            saveq)))) {
-                                        /* Call the specified completion
-                                           routine */
-                                        if (cmdiocbp->iocb_cmpl) {
-                                                spin_unlock_irqrestore(
-                                                       &phba->hbalock,
-                                                       iflag);
-                                                (cmdiocbp->iocb_cmpl) (phba,
-                                                             cmdiocbp, saveq);
-                                                spin_lock_irqsave(
-                                                          &phba->hbalock,
-                                                          iflag);
-                                        } else
-                                                __lpfc_sli_release_iocbq(phba,
-                                                                      cmdiocbp);
-                                }
-                        } else if (type == LPFC_UNKNOWN_IOCB) {
-                                if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
-
-                                        char adaptermsg[LPFC_MAX_ADPTMSG];
-
-                                        memset(adaptermsg, 0,
-                                               LPFC_MAX_ADPTMSG);
-                                        memcpy(&adaptermsg[0], (uint8_t *) irsp,
-                                               MAX_MSG_DATA);
-                                        dev_warn(&((phba->pcidev)->dev),
-                                                 "lpfc%d: %s\n",
-                                                 phba->brd_no, adaptermsg);
-                                } else {
-                                        /* Unknown IOCB command */
-                                        lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
-                                                        "0335 Unknown IOCB "
-                                                        "command Data: x%x "
-                                                        "x%x x%x x%x\n",
-                                                        irsp->ulpCommand,
-                                                        irsp->ulpStatus,
-                                                        irsp->ulpIoTag,
-                                                        irsp->ulpContext);
-                                }
-                        }
-
-                        if (free_saveq) {
-                                list_for_each_entry_safe(rspiocbp, next_iocb,
-                                                         &saveq->list, list) {
-                                        list_del(&rspiocbp->list);
-                                        __lpfc_sli_release_iocbq(phba,
-                                                                 rspiocbp);
-                                }
-                                __lpfc_sli_release_iocbq(phba, saveq);
-                        }
-                        rspiocbp = NULL;
-                }
+                spin_unlock_irqrestore(&phba->hbalock, iflag);
+                /* Handle the response IOCB */
+                rspiocbp = lpfc_sli_sp_handle_rspiocb(phba, pring, rspiocbp);
+                spin_lock_irqsave(&phba->hbalock, iflag);
 
                 /*
                  * If the port response put pointer has not been updated, sync
@@ -2338,7 +2998,37 @@ lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba,
         }
 
         spin_unlock_irqrestore(&phba->hbalock, iflag);
-        return rc;
+        return;
+}
+
+/**
+ * lpfc_sli_handle_slow_ring_event_s4 - Handle SLI4 slow-path els events
+ * @phba: Pointer to HBA context object.
+ * @pring: Pointer to driver SLI ring object.
+ * @mask: Host attention register mask for this ring.
+ *
+ * This function is called from the worker thread when there is a pending
+ * ELS response iocb on the driver internal slow-path response iocb worker
+ * queue. The caller does not hold any lock. The function will remove each
+ * response iocb from the response worker queue and calls the handle
+ * response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it.
+ **/
+static void
+lpfc_sli_handle_slow_ring_event_s4(struct lpfc_hba *phba,
+                                   struct lpfc_sli_ring *pring, uint32_t mask)
+{
+        struct lpfc_iocbq *irspiocbq;
+        unsigned long iflag;
+
+        while (!list_empty(&phba->sli4_hba.sp_rspiocb_work_queue)) {
+                /* Get the response iocb from the head of work queue */
+                spin_lock_irqsave(&phba->hbalock, iflag);
+                list_remove_head(&phba->sli4_hba.sp_rspiocb_work_queue,
+                                 irspiocbq, struct lpfc_iocbq, list);
+                spin_unlock_irqrestore(&phba->hbalock, iflag);
+                /* Process the response iocb */
+                lpfc_sli_sp_handle_rspiocb(phba, pring, irspiocbq);
+        }
 }
 
 /**
@@ -2420,7 +3110,7 @@ lpfc_sli_flush_fcp_rings(struct lpfc_hba *phba)
 }
 
 /**
- * lpfc_sli_brdready - Check for host status bits
+ * lpfc_sli_brdready_s3 - Check for sli3 host ready status
  * @phba: Pointer to HBA context object.
  * @mask: Bit mask to be checked.
  *
@@ -2432,8 +3122,8 @@ lpfc_sli_flush_fcp_rings(struct lpfc_hba *phba)
  * function returns 1 when HBA fail to restart otherwise returns
  * zero.
  **/
-int
-lpfc_sli_brdready(struct lpfc_hba *phba, uint32_t mask)
+static int
+lpfc_sli_brdready_s3(struct lpfc_hba *phba, uint32_t mask)
 {
         uint32_t status;
         int i = 0;
@@ -2477,6 +3167,56 @@ lpfc_sli_brdready(struct lpfc_hba *phba, uint32_t mask)
         return retval;
 }
 
+/**
+ * lpfc_sli_brdready_s4 - Check for sli4 host ready status
+ * @phba: Pointer to HBA context object.
+ * @mask: Bit mask to be checked.
+ *
+ * This function checks the host status register to check if HBA is
+ * ready. This function will wait in a loop for the HBA to be ready
+ * If the HBA is not ready , the function will will reset the HBA PCI
+ * function again. The function returns 1 when HBA fail to be ready
+ * otherwise returns zero.
+ **/
+static int
+lpfc_sli_brdready_s4(struct lpfc_hba *phba, uint32_t mask)
+{
+        uint32_t status;
+        int retval = 0;
+
+        /* Read the HBA Host Status Register */
+        status = lpfc_sli4_post_status_check(phba);
+
+        if (status) {
+                phba->pport->port_state = LPFC_VPORT_UNKNOWN;
+                lpfc_sli_brdrestart(phba);
+                status = lpfc_sli4_post_status_check(phba);
+        }
+
+        /* Check to see if any errors occurred during init */
+        if (status) {
+                phba->link_state = LPFC_HBA_ERROR;
+                retval = 1;
+        } else
+                phba->sli4_hba.intr_enable = 0;
+
+        return retval;
+}
+
+/**
+ * lpfc_sli_brdready - Wrapper func for checking the hba readyness
+ * @phba: Pointer to HBA context object.
+ * @mask: Bit mask to be checked.
+ *
+ * This routine wraps the actual SLI3 or SLI4 hba readyness check routine
+ * from the API jump table function pointer from the lpfc_hba struct.
+ **/
+int
+lpfc_sli_brdready(struct lpfc_hba *phba, uint32_t mask)
+{
+        return phba->lpfc_sli_brdready(phba, mask);
+}
+
 #define BARRIER_TEST_PATTERN (0xdeadbeef)
 
 /**
@@ -2532,7 +3272,7 @@ void lpfc_reset_barrier(struct lpfc_hba *phba)
                 mdelay(1);
 
         if (readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN)) {
-                if (phba->sli.sli_flag & LPFC_SLI2_ACTIVE ||
+                if (phba->sli.sli_flag & LPFC_SLI_ACTIVE ||
                     phba->pport->stopped)
                         goto restore_hc;
                 else
@@ -2613,7 +3353,9 @@ lpfc_sli_brdkill(struct lpfc_hba *phba)
                 return 1;
         }
 
-        psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
+        spin_lock_irq(&phba->hbalock);
+        psli->sli_flag &= ~LPFC_SLI_ACTIVE;
+        spin_unlock_irq(&phba->hbalock);
 
         mempool_free(pmb, phba->mbox_mem_pool);
 
@@ -2636,10 +3378,10 @@ lpfc_sli_brdkill(struct lpfc_hba *phba)
         }
         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;
 
@@ -2647,7 +3389,7 @@ lpfc_sli_brdkill(struct lpfc_hba *phba)
 }
 
 /**
- * lpfc_sli_brdreset - Reset the HBA
+ * lpfc_sli_brdreset - Reset a sli-2 or sli-3 HBA
  * @phba: Pointer to HBA context object.
  *
  * This function resets the HBA by writing HC_INITFF to the control
@@ -2683,7 +3425,8 @@ lpfc_sli_brdreset(struct lpfc_hba *phba)
                               (cfg_value &
                                ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
 
-        psli->sli_flag &= ~(LPFC_SLI2_ACTIVE | LPFC_PROCESS_LA);
+        psli->sli_flag &= ~(LPFC_SLI_ACTIVE | LPFC_PROCESS_LA);
+
         /* Now toggle INITFF bit in the Host Control Register */
         writel(HC_INITFF, phba->HCregaddr);
         mdelay(1);
@@ -2710,7 +3453,66 @@ lpfc_sli_brdreset(struct lpfc_hba *phba)
 }
 
 /**
- * lpfc_sli_brdrestart - Restart the HBA
+ * lpfc_sli4_brdreset - Reset a sli-4 HBA
+ * @phba: Pointer to HBA context object.
+ *
+ * This function resets a SLI4 HBA. This function disables PCI layer parity
+ * checking during resets the device. The caller is not required to hold
+ * any locks.
+ *
+ * This function returns 0 always.
+ **/
+int
+lpfc_sli4_brdreset(struct lpfc_hba *phba)
+{
+        struct lpfc_sli *psli = &phba->sli;
+        uint16_t cfg_value;
+        uint8_t qindx;
+
+        /* Reset HBA */
+        lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+                        "0295 Reset HBA Data: x%x x%x\n",
+                        phba->pport->port_state, psli->sli_flag);
+
+        /* perform board reset */
+        phba->fc_eventTag = 0;
+        phba->pport->fc_myDID = 0;
+        phba->pport->fc_prevDID = 0;
+
+        /* Turn off parity checking and serr during the physical reset */
+        pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value);
+        pci_write_config_word(phba->pcidev, PCI_COMMAND,
+                              (cfg_value &
+                              ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
+
+        spin_lock_irq(&phba->hbalock);
+        psli->sli_flag &= ~(LPFC_PROCESS_LA);
+        phba->fcf.fcf_flag = 0;
+        /* Clean up the child queue list for the CQs */
+        list_del_init(&phba->sli4_hba.mbx_wq->list);
+        list_del_init(&phba->sli4_hba.els_wq->list);
+        list_del_init(&phba->sli4_hba.hdr_rq->list);
+        list_del_init(&phba->sli4_hba.dat_rq->list);
+        list_del_init(&phba->sli4_hba.mbx_cq->list);
+        list_del_init(&phba->sli4_hba.els_cq->list);
+        list_del_init(&phba->sli4_hba.rxq_cq->list);
+        for (qindx = 0; qindx < phba->cfg_fcp_wq_count; qindx++)
+                list_del_init(&phba->sli4_hba.fcp_wq[qindx]->list);
+        for (qindx = 0; qindx < phba->cfg_fcp_eq_count; qindx++)
+                list_del_init(&phba->sli4_hba.fcp_cq[qindx]->list);
+        spin_unlock_irq(&phba->hbalock);
+
+        /* Now physically reset the device */
+        lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
+                        "0389 Performing PCI function reset!\n");
+        /* Perform FCoE PCI function reset */
+        lpfc_pci_function_reset(phba);
+
+        return 0;
+}
+
+/**
+ * lpfc_sli_brdrestart_s3 - Restart a sli-3 hba
  * @phba: Pointer to HBA context object.
  *
  * This function is called in the SLI initialization code path to
@@ -2722,8 +3524,8 @@ lpfc_sli_brdreset(struct lpfc_hba *phba)
  * The function does not guarantee completion of MBX_RESTART mailbox
  * command before the return of this function.
  **/
-int
-lpfc_sli_brdrestart(struct lpfc_hba *phba)
+static int
+lpfc_sli_brdrestart_s3(struct lpfc_hba *phba)
 {
         MAILBOX_t *mb;
         struct lpfc_sli *psli;
@@ -2762,7 +3564,7 @@ lpfc_sli_brdrestart(struct lpfc_hba *phba)
         lpfc_sli_brdreset(phba);
         phba->pport->stopped = 0;
         phba->link_state = LPFC_INIT_START;
-
+        phba->hba_flag = 0;
         spin_unlock_irq(&phba->hbalock);
 
         memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
@@ -2777,6 +3579,55 @@ lpfc_sli_brdrestart(struct lpfc_hba *phba)
 }
 
 /**
+ * lpfc_sli_brdrestart_s4 - Restart the sli-4 hba
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called in the SLI initialization code path to restart
+ * a SLI4 HBA. The caller is not required to hold any lock.
+ * At the end of the function, it calls lpfc_hba_down_post function to
+ * free any pending commands.
+ **/
+static int
+lpfc_sli_brdrestart_s4(struct lpfc_hba *phba)
+{
+        struct lpfc_sli *psli = &phba->sli;
+
+
+        /* Restart HBA */
+        lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
+                        "0296 Restart HBA Data: x%x x%x\n",
+                        phba->pport->port_state, psli->sli_flag);
+
+        lpfc_sli4_brdreset(phba);
+
+        spin_lock_irq(&phba->hbalock);
+        phba->pport->stopped = 0;
+        phba->link_state = LPFC_INIT_START;
+        phba->hba_flag = 0;
+        spin_unlock_irq(&phba->hbalock);
+
+        memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
+        psli->stats_start = get_seconds();
+
+        lpfc_hba_down_post(phba);
+
+        return 0;
+}
+
+/**
+ * lpfc_sli_brdrestart - Wrapper func for restarting hba
+ * @phba: Pointer to HBA context object.
+ *
+ * This routine wraps the actual SLI3 or SLI4 hba restart routine from the
+ * API jump table function pointer from the lpfc_hba struct.
+**/
+int
+lpfc_sli_brdrestart(struct lpfc_hba *phba)
+{
+        return phba->lpfc_sli_brdrestart(phba);
+}
+
+/**
  * lpfc_sli_chipset_init - Wait for the restart of the HBA after a restart
  * @phba: Pointer to HBA context object.
  *
@@ -2940,7 +3791,7 @@ lpfc_sli_hbq_setup(struct lpfc_hba *phba)
         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;
@@ -2984,6 +3835,26 @@ lpfc_sli_hbq_setup(struct lpfc_hba *phba)
 }
 
 /**
+ * lpfc_sli4_rb_setup - Initialize and post RBs to HBA
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called during the SLI initialization to configure
+ * all the HBQs and post buffers to the HBQ. The caller is not
+ * required to hold any locks. This function will return zero if successful
+ * else it will return negative error code.
+ **/
+static int
+lpfc_sli4_rb_setup(struct lpfc_hba *phba)
+{
+        phba->hbq_in_use = 1;
+        phba->hbqs[0].entry_count = lpfc_hbq_defs[0]->entry_count;
+        phba->hbq_count = 1;
+        /* Initially populate or replenish the HBQs */
+        lpfc_sli_hbqbuf_init_hbqs(phba, 0);
+        return 0;
+}
+
+/**
  * lpfc_sli_config_port - Issue config port mailbox command
  * @phba: Pointer to HBA context object.
  * @sli_mode: sli mode - 2/3
@@ -3047,33 +3918,43 @@ lpfc_sli_config_port(struct lpfc_hba *phba, int sli_mode)
                         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;
@@ -3089,7 +3970,7 @@ lpfc_sli_config_port(struct lpfc_hba *phba, int sli_mode)
                 }
 
                 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,
@@ -3184,8 +4065,9 @@ lpfc_sli_hba_setup(struct lpfc_hba *phba)
                 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)
@@ -3200,6 +4082,493 @@ lpfc_sli_hba_setup_error:
         return rc;
 }
 
+/**
+ * lpfc_sli4_read_fcoe_params - Read fcoe params from conf region
+ * @phba: Pointer to HBA context object.
+ * @mboxq: mailbox pointer.
+ * This function issue a dump mailbox command to read config region
+ * 23 and parse the records in the region and populate driver
+ * data structure.
+ **/
+static int
+lpfc_sli4_read_fcoe_params(struct lpfc_hba *phba,
+                LPFC_MBOXQ_t *mboxq)
+{
+        struct lpfc_dmabuf *mp;
+        struct lpfc_mqe *mqe;
+        uint32_t data_length;
+        int rc;
+
+        /* Program the default value of vlan_id and fc_map */
+        phba->valid_vlan = 0;
+        phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
+        phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
+        phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
+
+        mqe = &mboxq->u.mqe;
+        if (lpfc_dump_fcoe_param(phba, mboxq))
+                return -ENOMEM;
+
+        mp = (struct lpfc_dmabuf *) mboxq->context1;
+        rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+
+        lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+                        "(%d):2571 Mailbox cmd x%x Status x%x "
+                        "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x "
+                        "x%x x%x x%x x%x x%x x%x x%x x%x x%x "
+                        "CQ: x%x x%x x%x x%x\n",
+                        mboxq->vport ? mboxq->vport->vpi : 0,
+                        bf_get(lpfc_mqe_command, mqe),
+                        bf_get(lpfc_mqe_status, mqe),
+                        mqe->un.mb_words[0], mqe->un.mb_words[1],
+                        mqe->un.mb_words[2], mqe->un.mb_words[3],
+                        mqe->un.mb_words[4], mqe->un.mb_words[5],
+                        mqe->un.mb_words[6], mqe->un.mb_words[7],
+                        mqe->un.mb_words[8], mqe->un.mb_words[9],
+                        mqe->un.mb_words[10], mqe->un.mb_words[11],
+                        mqe->un.mb_words[12], mqe->un.mb_words[13],
+                        mqe->un.mb_words[14], mqe->un.mb_words[15],
+                        mqe->un.mb_words[16], mqe->un.mb_words[50],
+                        mboxq->mcqe.word0,
+                        mboxq->mcqe.mcqe_tag0,  mboxq->mcqe.mcqe_tag1,
+                        mboxq->mcqe.trailer);
+
+        if (rc) {
+                lpfc_mbuf_free(phba, mp->virt, mp->phys);
+                kfree(mp);
+                return -EIO;
+        }
+        data_length = mqe->un.mb_words[5];
+        if (data_length > DMP_FCOEPARAM_RGN_SIZE) {
+                lpfc_mbuf_free(phba, mp->virt, mp->phys);
+                kfree(mp);
+                return -EIO;
+        }
+
+        lpfc_parse_fcoe_conf(phba, mp->virt, data_length);
+        lpfc_mbuf_free(phba, mp->virt, mp->phys);
+        kfree(mp);
+        return 0;
+}
+
+/**
+ * lpfc_sli4_read_rev - Issue READ_REV and collect vpd data
+ * @phba: pointer to lpfc hba data structure.
+ * @mboxq: pointer to the LPFC_MBOXQ_t structure.
+ * @vpd: pointer to the memory to hold resulting port vpd data.
+ * @vpd_size: On input, the number of bytes allocated to @vpd.
+ *            On output, the number of data bytes in @vpd.
+ *
+ * This routine executes a READ_REV SLI4 mailbox command.  In
+ * addition, this routine gets the port vpd data.
+ *
+ * Return codes
+ *      0 - sucessful
+ *      ENOMEM - could not allocated memory.
+ **/
+static int
+lpfc_sli4_read_rev(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
+                    uint8_t *vpd, uint32_t *vpd_size)
+{
+        int rc = 0;
+        uint32_t dma_size;
+        struct lpfc_dmabuf *dmabuf;
+        struct lpfc_mqe *mqe;
+
+        dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
+        if (!dmabuf)
+                return -ENOMEM;
+
+        /*
+         * Get a DMA buffer for the vpd data resulting from the READ_REV
+         * mailbox command.
+         */
+        dma_size = *vpd_size;
+        dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
+                                          dma_size,
+                                          &dmabuf->phys,
+                                          GFP_KERNEL);
+        if (!dmabuf->virt) {
+                kfree(dmabuf);
+                return -ENOMEM;
+        }
+        memset(dmabuf->virt, 0, dma_size);
+
+        /*
+         * The SLI4 implementation of READ_REV conflicts at word1,
+         * bits 31:16 and SLI4 adds vpd functionality not present
+         * in SLI3.  This code corrects the conflicts.
+         */
+        lpfc_read_rev(phba, mboxq);
+        mqe = &mboxq->u.mqe;
+        mqe->un.read_rev.vpd_paddr_high = putPaddrHigh(dmabuf->phys);
+        mqe->un.read_rev.vpd_paddr_low = putPaddrLow(dmabuf->phys);
+        mqe->un.read_rev.word1 &= 0x0000FFFF;
+        bf_set(lpfc_mbx_rd_rev_vpd, &mqe->un.read_rev, 1);
+        bf_set(lpfc_mbx_rd_rev_avail_len, &mqe->un.read_rev, dma_size);
+
+        rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+        if (rc) {
+                dma_free_coherent(&phba->pcidev->dev, dma_size,
+                                  dmabuf->virt, dmabuf->phys);
+                return -EIO;
+        }
+
+        /*
+         * The available vpd length cannot be bigger than the
+         * DMA buffer passed to the port.  Catch the less than
+         * case and update the caller's size.
+         */
+        if (mqe->un.read_rev.avail_vpd_len < *vpd_size)
+                *vpd_size = mqe->un.read_rev.avail_vpd_len;
+
+        lpfc_sli_pcimem_bcopy(dmabuf->virt, vpd, *vpd_size);
+        dma_free_coherent(&phba->pcidev->dev, dma_size,
+                          dmabuf->virt, dmabuf->phys);
+        kfree(dmabuf);
+        return 0;
+}
+
+/**
+ * lpfc_sli4_arm_cqeq_intr - Arm sli-4 device completion and event queues
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is called to explicitly arm the SLI4 device's completion and
+ * event queues
+ **/
+static void
+lpfc_sli4_arm_cqeq_intr(struct lpfc_hba *phba)
+{
+        uint8_t fcp_eqidx;
+
+        lpfc_sli4_cq_release(phba->sli4_hba.mbx_cq, LPFC_QUEUE_REARM);
+        lpfc_sli4_cq_release(phba->sli4_hba.els_cq, LPFC_QUEUE_REARM);
+        lpfc_sli4_cq_release(phba->sli4_hba.rxq_cq, LPFC_QUEUE_REARM);
+        for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++)
+                lpfc_sli4_cq_release(phba->sli4_hba.fcp_cq[fcp_eqidx],
+                                     LPFC_QUEUE_REARM);
+        lpfc_sli4_eq_release(phba->sli4_hba.sp_eq, LPFC_QUEUE_REARM);
+        for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++)
+                lpfc_sli4_eq_release(phba->sli4_hba.fp_eq[fcp_eqidx],
+                                     LPFC_QUEUE_REARM);
+}
+
+/**
+ * lpfc_sli4_hba_setup - SLI4 device intialization PCI function
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is the main SLI4 device intialization PCI function. This
+ * function is called by the HBA intialization code, HBA reset code and
+ * HBA error attention handler code. Caller is not required to hold any
+ * locks.
+ **/
+int
+lpfc_sli4_hba_setup(struct lpfc_hba *phba)
+{
+        int rc;
+        LPFC_MBOXQ_t *mboxq;
+        struct lpfc_mqe *mqe;
+        uint8_t *vpd;
+        uint32_t vpd_size;
+        uint32_t ftr_rsp = 0;
+        struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport);
+        struct lpfc_vport *vport = phba->pport;
+        struct lpfc_dmabuf *mp;
+
+        /* Perform a PCI function reset to start from clean */
+        rc = lpfc_pci_function_reset(phba);
+        if (unlikely(rc))
+                return -ENODEV;
+
+        /* Check the HBA Host Status Register for readyness */
+        rc = lpfc_sli4_post_status_check(phba);
+        if (unlikely(rc))
+                return -ENODEV;
+        else {
+                spin_lock_irq(&phba->hbalock);
+                phba->sli.sli_flag |= LPFC_SLI_ACTIVE;
+                spin_unlock_irq(&phba->hbalock);
+        }
+
+        /*
+         * Allocate a single mailbox container for initializing the
+         * port.
+         */
+        mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mboxq)
+                return -ENOMEM;
+
+        /*
+         * Continue initialization with default values even if driver failed
+         * to read FCoE param config regions
+         */
+        if (lpfc_sli4_read_fcoe_params(phba, mboxq))
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_INIT,
+                        "2570 Failed to read FCoE parameters \n");
+
+        /* Issue READ_REV to collect vpd and FW information. */
+        vpd_size = PAGE_SIZE;
+        vpd = kzalloc(vpd_size, GFP_KERNEL);
+        if (!vpd) {
+                rc = -ENOMEM;
+                goto out_free_mbox;
+        }
+
+        rc = lpfc_sli4_read_rev(phba, mboxq, vpd, &vpd_size);
+        if (unlikely(rc))
+                goto out_free_vpd;
+
+        mqe = &mboxq->u.mqe;
+        phba->sli_rev = bf_get(lpfc_mbx_rd_rev_sli_lvl, &mqe->un.read_rev);
+        if (bf_get(lpfc_mbx_rd_rev_fcoe, &mqe->un.read_rev))
+                phba->hba_flag |= HBA_FCOE_SUPPORT;
+        if (phba->sli_rev != LPFC_SLI_REV4 ||
+            !(phba->hba_flag & HBA_FCOE_SUPPORT)) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                        "0376 READ_REV Error. SLI Level %d "
+                        "FCoE enabled %d\n",
+                        phba->sli_rev, phba->hba_flag & HBA_FCOE_SUPPORT);
+                rc = -EIO;
+                goto out_free_vpd;
+        }
+        /*
+         * Evaluate the read rev and vpd data. Populate the driver
+         * state with the results. If this routine fails, the failure
+         * is not fatal as the driver will use generic values.
+         */
+        rc = lpfc_parse_vpd(phba, vpd, vpd_size);
+        if (unlikely(!rc)) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                                "0377 Error %d parsing vpd. "
+                                "Using defaults.\n", rc);
+                rc = 0;
+        }
+
+        /* Save information as VPD data */
+        phba->vpd.rev.biuRev = mqe->un.read_rev.first_hw_rev;
+        phba->vpd.rev.smRev = mqe->un.read_rev.second_hw_rev;
+        phba->vpd.rev.endecRev = mqe->un.read_rev.third_hw_rev;
+        phba->vpd.rev.fcphHigh = bf_get(lpfc_mbx_rd_rev_fcph_high,
+                                         &mqe->un.read_rev);
+        phba->vpd.rev.fcphLow = bf_get(lpfc_mbx_rd_rev_fcph_low,
+                                       &mqe->un.read_rev);
+        phba->vpd.rev.feaLevelHigh = bf_get(lpfc_mbx_rd_rev_ftr_lvl_high,
+                                            &mqe->un.read_rev);
+        phba->vpd.rev.feaLevelLow = bf_get(lpfc_mbx_rd_rev_ftr_lvl_low,
+                                           &mqe->un.read_rev);
+        phba->vpd.rev.sli1FwRev = mqe->un.read_rev.fw_id_rev;
+        memcpy(phba->vpd.rev.sli1FwName, mqe->un.read_rev.fw_name, 16);
+        phba->vpd.rev.sli2FwRev = mqe->un.read_rev.ulp_fw_id_rev;
+        memcpy(phba->vpd.rev.sli2FwName, mqe->un.read_rev.ulp_fw_name, 16);
+        phba->vpd.rev.opFwRev = mqe->un.read_rev.fw_id_rev;
+        memcpy(phba->vpd.rev.opFwName, mqe->un.read_rev.fw_name, 16);
+        lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+                        "(%d):0380 READ_REV Status x%x "
+                        "fw_rev:%s fcphHi:%x fcphLo:%x flHi:%x flLo:%x\n",
+                        mboxq->vport ? mboxq->vport->vpi : 0,
+                        bf_get(lpfc_mqe_status, mqe),
+                        phba->vpd.rev.opFwName,
+                        phba->vpd.rev.fcphHigh, phba->vpd.rev.fcphLow,
+                        phba->vpd.rev.feaLevelHigh, phba->vpd.rev.feaLevelLow);
+
+        /*
+         * Discover the port's supported feature set and match it against the
+         * hosts requests.
+         */
+        lpfc_request_features(phba, mboxq);
+        rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+        if (unlikely(rc)) {
+                rc = -EIO;
+                goto out_free_vpd;
+        }
+
+        /*
+         * The port must support FCP initiator mode as this is the
+         * only mode running in the host.
+         */
+        if (!(bf_get(lpfc_mbx_rq_ftr_rsp_fcpi, &mqe->un.req_ftrs))) {
+                lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
+                                "0378 No support for fcpi mode.\n");
+                ftr_rsp++;
+        }
+
+        /*
+         * If the port cannot support the host's requested features
+         * then turn off the global config parameters to disable the
+         * feature in the driver.  This is not a fatal error.
+         */
+        if ((phba->cfg_enable_bg) &&
+            !(bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs)))
+                ftr_rsp++;
+
+        if (phba->max_vpi && phba->cfg_enable_npiv &&
+            !(bf_get(lpfc_mbx_rq_ftr_rsp_npiv, &mqe->un.req_ftrs)))
+                ftr_rsp++;
+
+        if (ftr_rsp) {
+                lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
+                                "0379 Feature Mismatch Data: x%08x %08x "
+                                "x%x x%x x%x\n", mqe->un.req_ftrs.word2,
+                                mqe->un.req_ftrs.word3, phba->cfg_enable_bg,
+                                phba->cfg_enable_npiv, phba->max_vpi);
+                if (!(bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs)))
+                        phba->cfg_enable_bg = 0;
+                if (!(bf_get(lpfc_mbx_rq_ftr_rsp_npiv, &mqe->un.req_ftrs)))
+                        phba->cfg_enable_npiv = 0;
+        }
+
+        /* These SLI3 features are assumed in SLI4 */
+        spin_lock_irq(&phba->hbalock);
+        phba->sli3_options |= (LPFC_SLI3_NPIV_ENABLED | LPFC_SLI3_HBQ_ENABLED);
+        spin_unlock_irq(&phba->hbalock);
+
+        /* Read the port's service parameters. */
+        lpfc_read_sparam(phba, mboxq, vport->vpi);
+        mboxq->vport = vport;
+        rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+        mp = (struct lpfc_dmabuf *) mboxq->context1;
+        if (rc == MBX_SUCCESS) {
+                memcpy(&vport->fc_sparam, mp->virt, sizeof(struct serv_parm));
+                rc = 0;
+        }
+
+        /*
+         * This memory was allocated by the lpfc_read_sparam routine. Release
+         * it to the mbuf pool.
+         */
+        lpfc_mbuf_free(phba, mp->virt, mp->phys);
+        kfree(mp);
+        mboxq->context1 = NULL;
+        if (unlikely(rc)) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                                "0382 READ_SPARAM command failed "
+                                "status %d, mbxStatus x%x\n",
+                                rc, bf_get(lpfc_mqe_status, mqe));
+                phba->link_state = LPFC_HBA_ERROR;
+                rc = -EIO;
+                goto out_free_vpd;
+        }
+
+        if (phba->cfg_soft_wwnn)
+                u64_to_wwn(phba->cfg_soft_wwnn,
+                           vport->fc_sparam.nodeName.u.wwn);
+        if (phba->cfg_soft_wwpn)
+                u64_to_wwn(phba->cfg_soft_wwpn,
+                           vport->fc_sparam.portName.u.wwn);
+        memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
+               sizeof(struct lpfc_name));
+        memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
+               sizeof(struct lpfc_name));
+
+        /* Update the fc_host data structures with new wwn. */
+        fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
+        fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
+
+        /* Register SGL pool to the device using non-embedded mailbox command */
+        rc = lpfc_sli4_post_sgl_list(phba);
+        if (unlikely(rc)) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                                "0582 Error %d during sgl post operation", rc);
+                rc = -ENODEV;
+                goto out_free_vpd;
+        }
+
+        /* Register SCSI SGL pool to the device */
+        rc = lpfc_sli4_repost_scsi_sgl_list(phba);
+        if (unlikely(rc)) {
+                lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
+                                "0383 Error %d during scsi sgl post opeation",
+                                rc);
+                /* Some Scsi buffers were moved to the abort scsi list */
+                /* A pci function reset will repost them */
+                rc = -ENODEV;
+                goto out_free_vpd;
+        }
+
+        /* Post the rpi header region to the device. */
+        rc = lpfc_sli4_post_all_rpi_hdrs(phba);
+        if (unlikely(rc)) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                                "0393 Error %d during rpi post operation\n",
+                                rc);
+                rc = -ENODEV;
+                goto out_free_vpd;
+        }
+        if (phba->cfg_enable_fip)
+                bf_set(lpfc_fip_flag, &phba->sli4_hba.sli4_flags, 1);
+        else
+                bf_set(lpfc_fip_flag, &phba->sli4_hba.sli4_flags, 0);
+
+        /* Set up all the queues to the device */
+        rc = lpfc_sli4_queue_setup(phba);
+        if (unlikely(rc)) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                                "0381 Error %d during queue setup.\n ", rc);
+                goto out_stop_timers;
+        }
+
+        /* Arm the CQs and then EQs on device */
+        lpfc_sli4_arm_cqeq_intr(phba);
+
+        /* Indicate device interrupt mode */
+        phba->sli4_hba.intr_enable = 1;
+
+        /* 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);
+
+        /* Post receive buffers to the device */
+        lpfc_sli4_rb_setup(phba);
+
+        /* Start the ELS watchdog timer */
+        /*
+         * The driver for SLI4 is not yet ready to process timeouts
+         * or interrupts.  Once it is, the comment bars can be removed.
+         */
+        /* mod_timer(&vport->els_tmofunc,
+         *           jiffies + HZ * (phba->fc_ratov*2)); */
+
+        /* Start heart beat timer */
+        mod_timer(&phba->hb_tmofunc,
+                  jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
+        phba->hb_outstanding = 0;
+        phba->last_completion_time = jiffies;
+
+        /* Start error attention (ERATT) polling timer */
+        mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL);
+
+        /*
+         * The port is ready, set the host's link state to LINK_DOWN
+         * in preparation for link interrupts.
+         */
+        lpfc_init_link(phba, mboxq, phba->cfg_topology, phba->cfg_link_speed);
+        mboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+        lpfc_set_loopback_flag(phba);
+        /* Change driver state to LPFC_LINK_DOWN right before init link */
+        spin_lock_irq(&phba->hbalock);
+        phba->link_state = LPFC_LINK_DOWN;
+        spin_unlock_irq(&phba->hbalock);
+        rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
+        if (unlikely(rc != MBX_NOT_FINISHED)) {
+                kfree(vpd);
+                return 0;
+        } else
+                rc = -EIO;
+
+        /* Unset all the queues set up in this routine when error out */
+        if (rc)
+                lpfc_sli4_queue_unset(phba);
+
+out_stop_timers:
+        if (rc)
+                lpfc_stop_hba_timers(phba);
+out_free_vpd:
+        kfree(vpd);
+out_free_mbox:
+        mempool_free(mboxq, phba->mbox_mem_pool);
+        return rc;
+}
 
 /**
  * lpfc_mbox_timeout - Timeout call back function for mbox timer
@@ -3244,7 +4613,7 @@ void
 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;
 
@@ -3281,7 +4650,7 @@ lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
         spin_unlock_irq(&phba->pport->work_port_lock);
         spin_lock_irq(&phba->hbalock);
         phba->link_state = LPFC_LINK_UNKNOWN;
-        psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
+        psli->sli_flag &= ~LPFC_SLI_ACTIVE;
         spin_unlock_irq(&phba->hbalock);
 
         pring = &psli->ring[psli->fcp_ring];
@@ -3289,32 +4658,20 @@ lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
 
         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
                         "0345 Resetting board due to mailbox timeout\n");
-        /*
-         * lpfc_offline calls lpfc_sli_hba_down which will clean up
-         * on oustanding mailbox commands.
-         */
-        /* If resets are disabled then set error state and return. */
-        if (!phba->cfg_enable_hba_reset) {
-                phba->link_state = LPFC_HBA_ERROR;
-                return;
-        }
-        lpfc_offline_prep(phba);
-        lpfc_offline(phba);
-        lpfc_sli_brdrestart(phba);
-        lpfc_online(phba);
-        lpfc_unblock_mgmt_io(phba);
-        return;
+
+        /* Reset the HBA device */
+        lpfc_reset_hba(phba);
 }
 
 /**
- * lpfc_sli_issue_mbox - Issue a mailbox command to firmware
+ * lpfc_sli_issue_mbox_s3 - Issue an SLI3 mailbox command to firmware
  * @phba: Pointer to HBA context object.
  * @pmbox: Pointer to mailbox object.
  * @flag: Flag indicating how the mailbox need to be processed.
  *
  * This function is called by discovery code and HBA management code
- * to submit a mailbox command to firmware. This function gets the
- * hbalock to protect the data structures.
+ * to submit a mailbox command to firmware with SLI-3 interface spec. This
+ * function gets the hbalock to protect the data structures.
  * The mailbox command can be submitted in polling mode, in which case
  * this function will wait in a polling loop for the completion of the
  * mailbox.
@@ -3332,8 +4689,9 @@ lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
  * return codes the caller owns the mailbox command after the return of
  * the function.
  **/
-int
-lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
+static int
+lpfc_sli_issue_mbox_s3(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox,
+                       uint32_t flag)
 {
         MAILBOX_t *mb;
         struct lpfc_sli *psli = &phba->sli;
@@ -3349,6 +4707,10 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
         spin_lock_irqsave(&phba->hbalock, drvr_flag);
         if (!pmbox) {
                 /* processing mbox queue from intr_handler */
+                if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) {
+                        spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
+                        return MBX_SUCCESS;
+                }
                 processing_queue = 1;
                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
                 pmbox = lpfc_mbox_get(phba);
@@ -3365,7 +4727,7 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
                         lpfc_printf_log(phba, KERN_ERR,
                                         LOG_MBOX | LOG_VPORT,
                                         "1806 Mbox x%x failed. No vport\n",
-                                        pmbox->mb.mbxCommand);
+                                        pmbox->u.mb.mbxCommand);
                         dump_stack();
                         goto out_not_finished;
                 }
@@ -3385,21 +4747,29 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
 
         psli = &phba->sli;
 
-        mb = &pmbox->mb;
+        mb = &pmbox->u.mb;
         status = MBX_SUCCESS;
 
         if (phba->link_state == LPFC_HBA_ERROR) {
                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
 
                 /* Mbox command <mbxCommand> cannot issue */
-                LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                                "(%d):0311 Mailbox command x%x cannot "
+                                "issue Data: x%x x%x\n",
+                                pmbox->vport ? pmbox->vport->vpi : 0,
+                                pmbox->u.mb.mbxCommand, psli->sli_flag, flag);
                 goto out_not_finished;
         }
 
         if (mb->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT &&
             !(readl(phba->HCregaddr) & HC_MBINT_ENA)) {
                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
-                LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                                "(%d):2528 Mailbox command x%x cannot "
+                                "issue Data: x%x x%x\n",
+                                pmbox->vport ? pmbox->vport->vpi : 0,
+                                pmbox->u.mb.mbxCommand, psli->sli_flag, flag);
                 goto out_not_finished;
         }
 
@@ -3413,14 +4783,24 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
 
                         /* Mbox command <mbxCommand> cannot issue */
-                        LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
+                        lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                                        "(%d):2529 Mailbox command x%x "
+                                        "cannot issue Data: x%x x%x\n",
+                                        pmbox->vport ? pmbox->vport->vpi : 0,
+                                        pmbox->u.mb.mbxCommand,
+                                        psli->sli_flag, flag);
                         goto out_not_finished;
                 }
 
-                if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
+                if (!(psli->sli_flag & LPFC_SLI_ACTIVE)) {
                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
                         /* Mbox command <mbxCommand> cannot issue */
-                        LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
+                        lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                                        "(%d):2530 Mailbox command x%x "
+                                        "cannot issue Data: x%x x%x\n",
+                                        pmbox->vport ? pmbox->vport->vpi : 0,
+                                        pmbox->u.mb.mbxCommand,
+                                        psli->sli_flag, flag);
                         goto out_not_finished;
                 }
 
@@ -3462,12 +4842,17 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
 
         /* If we are not polling, we MUST be in SLI2 mode */
         if (flag != MBX_POLL) {
-                if (!(psli->sli_flag & LPFC_SLI2_ACTIVE) &&
+                if (!(psli->sli_flag & LPFC_SLI_ACTIVE) &&
                     (mb->mbxCommand != MBX_KILL_BOARD)) {
                         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
                         /* Mbox command <mbxCommand> cannot issue */
-                        LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
+                        lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                                        "(%d):2531 Mailbox command x%x "
+                                        "cannot issue Data: x%x x%x\n",
+                                        pmbox->vport ? pmbox->vport->vpi : 0,
+                                        pmbox->u.mb.mbxCommand,
+                                        psli->sli_flag, flag);
                         goto out_not_finished;
                 }
                 /* timeout active mbox command */
@@ -3506,7 +4891,7 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
         /* next set own bit for the adapter and copy over command word */
         mb->mbxOwner = OWN_CHIP;
 
-        if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
+        if (psli->sli_flag & LPFC_SLI_ACTIVE) {
                 /* First copy command data to host SLIM area */
                 lpfc_sli_pcimem_bcopy(mb, phba->mbox, MAILBOX_CMD_SIZE);
         } else {
@@ -3529,7 +4914,7 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
 
                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
                         /* switch over to host mailbox */
-                        psli->sli_flag |= LPFC_SLI2_ACTIVE;
+                        psli->sli_flag |= LPFC_SLI_ACTIVE;
                 }
         }
 
@@ -3552,7 +4937,7 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
                 writel(CA_MBATT, phba->CAregaddr);
                 readl(phba->CAregaddr); /* flush */
 
-                if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
+                if (psli->sli_flag & LPFC_SLI_ACTIVE) {
                         /* First read mbox status word */
                         word0 = *((uint32_t *)phba->mbox);
                         word0 = le32_to_cpu(word0);
@@ -3591,7 +4976,7 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
                                 spin_lock_irqsave(&phba->hbalock, drvr_flag);
                         }
 
-                        if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
+                        if (psli->sli_flag & LPFC_SLI_ACTIVE) {
                                 /* First copy command data */
                                 word0 = *((uint32_t *)phba->mbox);
                                 word0 = le32_to_cpu(word0);
@@ -3604,7 +4989,7 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
                                         if (((slimword0 & OWN_CHIP) != OWN_CHIP)
                                             && slimmb->mbxStatus) {
                                                 psli->sli_flag &=
-                                                    ~LPFC_SLI2_ACTIVE;
+                                                    ~LPFC_SLI_ACTIVE;
                                                 word0 = slimword0;
                                         }
                                 }
@@ -3616,7 +5001,7 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
                         ha_copy = readl(phba->HAregaddr);
                 }
 
-                if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
+                if (psli->sli_flag & LPFC_SLI_ACTIVE) {
                         /* copy results back to user */
                         lpfc_sli_pcimem_bcopy(phba->mbox, mb, MAILBOX_CMD_SIZE);
                 } else {
@@ -3643,13 +5028,527 @@ lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
 
 out_not_finished:
         if (processing_queue) {
-                pmbox->mb.mbxStatus = MBX_NOT_FINISHED;
+                pmbox->u.mb.mbxStatus = MBX_NOT_FINISHED;
                 lpfc_mbox_cmpl_put(phba, pmbox);
         }
         return MBX_NOT_FINISHED;
 }
 
 /**
+ * lpfc_sli4_async_mbox_block - Block posting SLI4 asynchronous mailbox command
+ * @phba: Pointer to HBA context object.
+ *
+ * The function blocks the posting of SLI4 asynchronous mailbox commands from
+ * the driver internal pending mailbox queue. It will then try to wait out the
+ * possible outstanding mailbox command before return.
+ *
+ * Returns:
+ *      0 - the outstanding mailbox command completed; otherwise, the wait for
+ *      the outstanding mailbox command timed out.
+ **/
+static int
+lpfc_sli4_async_mbox_block(struct lpfc_hba *phba)
+{
+        struct lpfc_sli *psli = &phba->sli;
+        uint8_t actcmd = MBX_HEARTBEAT;
+        int rc = 0;
+        unsigned long timeout;
+
+        /* Mark the asynchronous mailbox command posting as blocked */
+        spin_lock_irq(&phba->hbalock);
+        psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
+        if (phba->sli.mbox_active)
+                actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
+        spin_unlock_irq(&phba->hbalock);
+        /* Determine how long we might wait for the active mailbox
+         * command to be gracefully completed by firmware.
+         */
+        timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, actcmd) * 1000) +
+                                   jiffies;
+        /* Wait for the outstnading mailbox command to complete */
+        while (phba->sli.mbox_active) {
+                /* Check active mailbox complete status every 2ms */
+                msleep(2);
+                if (time_after(jiffies, timeout)) {
+                        /* Timeout, marked the outstanding cmd not complete */
+                        rc = 1;
+                        break;
+                }
+        }
+
+        /* Can not cleanly block async mailbox command, fails it */
+        if (rc) {
+                spin_lock_irq(&phba->hbalock);
+                psli->sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
+                spin_unlock_irq(&phba->hbalock);
+        }
+        return rc;
+}
+
+/**
+ * lpfc_sli4_async_mbox_unblock - Block posting SLI4 async mailbox command
+ * @phba: Pointer to HBA context object.
+ *
+ * The function unblocks and resume posting of SLI4 asynchronous mailbox
+ * commands from the driver internal pending mailbox queue. It makes sure
+ * that there is no outstanding mailbox command before resuming posting
+ * asynchronous mailbox commands. If, for any reason, there is outstanding
+ * mailbox command, it will try to wait it out before resuming asynchronous
+ * mailbox command posting.
+ **/
+static void
+lpfc_sli4_async_mbox_unblock(struct lpfc_hba *phba)
+{
+        struct lpfc_sli *psli = &phba->sli;
+
+        spin_lock_irq(&phba->hbalock);
+        if (!(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) {
+                /* Asynchronous mailbox posting is not blocked, do nothing */
+                spin_unlock_irq(&phba->hbalock);
+                return;
+        }
+
+        /* Outstanding synchronous mailbox command is guaranteed to be done,
+         * successful or timeout, after timing-out the outstanding mailbox
+         * command shall always be removed, so just unblock posting async
+         * mailbox command and resume
+         */
+        psli->sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
+        spin_unlock_irq(&phba->hbalock);
+
+        /* wake up worker thread to post asynchronlous mailbox command */
+        lpfc_worker_wake_up(phba);
+}
+
+/**
+ * lpfc_sli4_post_sync_mbox - Post an SLI4 mailbox to the bootstrap mailbox
+ * @phba: Pointer to HBA context object.
+ * @mboxq: Pointer to mailbox object.
+ *
+ * The function posts a mailbox to the port.  The mailbox is expected
+ * to be comletely filled in and ready for the port to operate on it.
+ * This routine executes a synchronous completion operation on the
+ * mailbox by polling for its completion.
+ *
+ * The caller must not be holding any locks when calling this routine.
+ *
+ * Returns:
+ *      MBX_SUCCESS - mailbox posted successfully
+ *      Any of the MBX error values.
+ **/
+static int
+lpfc_sli4_post_sync_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
+{
+        int rc = MBX_SUCCESS;
+        unsigned long iflag;
+        uint32_t db_ready;
+        uint32_t mcqe_status;
+        uint32_t mbx_cmnd;
+        unsigned long timeout;
+        struct lpfc_sli *psli = &phba->sli;
+        struct lpfc_mqe *mb = &mboxq->u.mqe;
+        struct lpfc_bmbx_create *mbox_rgn;
+        struct dma_address *dma_address;
+        struct lpfc_register bmbx_reg;
+
+        /*
+         * Only one mailbox can be active to the bootstrap mailbox region
+         * at a time and there is no queueing provided.
+         */
+        spin_lock_irqsave(&phba->hbalock, iflag);
+        if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
+                spin_unlock_irqrestore(&phba->hbalock, iflag);
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                                "(%d):2532 Mailbox command x%x (x%x) "
+                                "cannot issue Data: x%x x%x\n",
+                                mboxq->vport ? mboxq->vport->vpi : 0,
+                                mboxq->u.mb.mbxCommand,
+                                lpfc_sli4_mbox_opcode_get(phba, mboxq),
+                                psli->sli_flag, MBX_POLL);
+                return MBXERR_ERROR;
+        }
+        /* The server grabs the token and owns it until release */
+        psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
+        phba->sli.mbox_active = mboxq;
+        spin_unlock_irqrestore(&phba->hbalock, iflag);
+
+        /*
+         * Initialize the bootstrap memory region to avoid stale data areas
+         * in the mailbox post.  Then copy the caller's mailbox contents to
+         * the bmbx mailbox region.
+         */
+        mbx_cmnd = bf_get(lpfc_mqe_command, mb);
+        memset(phba->sli4_hba.bmbx.avirt, 0, sizeof(struct lpfc_bmbx_create));
+        lpfc_sli_pcimem_bcopy(mb, phba->sli4_hba.bmbx.avirt,
+                              sizeof(struct lpfc_mqe));
+
+        /* Post the high mailbox dma address to the port and wait for ready. */
+        dma_address = &phba->sli4_hba.bmbx.dma_address;
+        writel(dma_address->addr_hi, phba->sli4_hba.BMBXregaddr);
+
+        timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, mbx_cmnd)
+                                   * 1000) + jiffies;
+        do {
+                bmbx_reg.word0 = readl(phba->sli4_hba.BMBXregaddr);
+                db_ready = bf_get(lpfc_bmbx_rdy, &bmbx_reg);
+                if (!db_ready)
+                        msleep(2);
+
+                if (time_after(jiffies, timeout)) {
+                        rc = MBXERR_ERROR;
+                        goto exit;
+                }
+        } while (!db_ready);
+
+        /* Post the low mailbox dma address to the port. */
+        writel(dma_address->addr_lo, phba->sli4_hba.BMBXregaddr);
+        timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, mbx_cmnd)
+                                   * 1000) + jiffies;
+        do {
+                bmbx_reg.word0 = readl(phba->sli4_hba.BMBXregaddr);
+                db_ready = bf_get(lpfc_bmbx_rdy, &bmbx_reg);
+                if (!db_ready)
+                        msleep(2);
+
+                if (time_after(jiffies, timeout)) {
+                        rc = MBXERR_ERROR;
+                        goto exit;
+                }
+        } while (!db_ready);
+
+        /*
+         * Read the CQ to ensure the mailbox has completed.
+         * If so, update the mailbox status so that the upper layers
+         * can complete the request normally.
+         */
+        lpfc_sli_pcimem_bcopy(phba->sli4_hba.bmbx.avirt, mb,
+                              sizeof(struct lpfc_mqe));
+        mbox_rgn = (struct lpfc_bmbx_create *) phba->sli4_hba.bmbx.avirt;
+        lpfc_sli_pcimem_bcopy(&mbox_rgn->mcqe, &mboxq->mcqe,
+                              sizeof(struct lpfc_mcqe));
+        mcqe_status = bf_get(lpfc_mcqe_status, &mbox_rgn->mcqe);
+
+        /* Prefix the mailbox status with range x4000 to note SLI4 status. */
+        if (mcqe_status != MB_CQE_STATUS_SUCCESS) {
+                bf_set(lpfc_mqe_status, mb, LPFC_MBX_ERROR_RANGE | mcqe_status);
+                rc = MBXERR_ERROR;
+        }
+
+        lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+                        "(%d):0356 Mailbox cmd x%x (x%x) Status x%x "
+                        "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x x%x x%x"
+                        " x%x x%x CQ: x%x x%x x%x x%x\n",
+                        mboxq->vport ? mboxq->vport->vpi : 0,
+                        mbx_cmnd, lpfc_sli4_mbox_opcode_get(phba, mboxq),
+                        bf_get(lpfc_mqe_status, mb),
+                        mb->un.mb_words[0], mb->un.mb_words[1],
+                        mb->un.mb_words[2], mb->un.mb_words[3],
+                        mb->un.mb_words[4], mb->un.mb_words[5],
+                        mb->un.mb_words[6], mb->un.mb_words[7],
+                        mb->un.mb_words[8], mb->un.mb_words[9],
+                        mb->un.mb_words[10], mb->un.mb_words[11],
+                        mb->un.mb_words[12], mboxq->mcqe.word0,
+                        mboxq->mcqe.mcqe_tag0,  mboxq->mcqe.mcqe_tag1,
+                        mboxq->mcqe.trailer);
+exit:
+        /* We are holding the token, no needed for lock when release */
+        spin_lock_irqsave(&phba->hbalock, iflag);
+        psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+        phba->sli.mbox_active = NULL;
+        spin_unlock_irqrestore(&phba->hbalock, iflag);
+        return rc;
+}
+
+/**
+ * lpfc_sli_issue_mbox_s4 - Issue an SLI4 mailbox command to firmware
+ * @phba: Pointer to HBA context object.
+ * @pmbox: Pointer to mailbox object.
+ * @flag: Flag indicating how the mailbox need to be processed.
+ *
+ * This function is called by discovery code and HBA management code to submit
+ * a mailbox command to firmware with SLI-4 interface spec.
+ *
+ * Return codes the caller owns the mailbox command after the return of the
+ * function.
+ **/
+static int
+lpfc_sli_issue_mbox_s4(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
+                       uint32_t flag)
+{
+        struct lpfc_sli *psli = &phba->sli;
+        unsigned long iflags;
+        int rc;
+
+        /* Detect polling mode and jump to a handler */
+        if (!phba->sli4_hba.intr_enable) {
+                if (flag == MBX_POLL)
+                        rc = lpfc_sli4_post_sync_mbox(phba, mboxq);
+                else
+                        rc = -EIO;
+                if (rc != MBX_SUCCESS)
+                        lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                                        "(%d):2541 Mailbox command x%x "
+                                        "(x%x) cannot issue Data: x%x x%x\n",
+                                        mboxq->vport ? mboxq->vport->vpi : 0,
+                                        mboxq->u.mb.mbxCommand,
+                                        lpfc_sli4_mbox_opcode_get(phba, mboxq),
+                                        psli->sli_flag, flag);
+                return rc;
+        } else if (flag == MBX_POLL) {
+                lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
+                                "(%d):2542 Try to issue mailbox command "
+                                "x%x (x%x) synchronously ahead of async"
+                                "mailbox command queue: x%x x%x\n",
+                                mboxq->vport ? mboxq->vport->vpi : 0,
+                                mboxq->u.mb.mbxCommand,
+                                lpfc_sli4_mbox_opcode_get(phba, mboxq),
+                                psli->sli_flag, flag);
+                /* Try to block the asynchronous mailbox posting */
+                rc = lpfc_sli4_async_mbox_block(phba);
+                if (!rc) {
+                        /* Successfully blocked, now issue sync mbox cmd */
+                        rc = lpfc_sli4_post_sync_mbox(phba, mboxq);
+                        if (rc != MBX_SUCCESS)
+                                lpfc_printf_log(phba, KERN_ERR,
+                                                LOG_MBOX | LOG_SLI,
+                                                "(%d):2597 Mailbox command "
+                                                "x%x (x%x) cannot issue "
+                                                "Data: x%x x%x\n",
+                                                mboxq->vport ?
+                                                mboxq->vport->vpi : 0,
+                                                mboxq->u.mb.mbxCommand,
+                                                lpfc_sli4_mbox_opcode_get(phba,
+                                                                mboxq),
+                                                psli->sli_flag, flag);
+                        /* Unblock the async mailbox posting afterward */
+                        lpfc_sli4_async_mbox_unblock(phba);
+                }
+                return rc;
+        }
+
+        /* Now, interrupt mode asynchrous mailbox command */
+        rc = lpfc_mbox_cmd_check(phba, mboxq);
+        if (rc) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                                "(%d):2543 Mailbox command x%x (x%x) "
+                                "cannot issue Data: x%x x%x\n",
+                                mboxq->vport ? mboxq->vport->vpi : 0,
+                                mboxq->u.mb.mbxCommand,
+                                lpfc_sli4_mbox_opcode_get(phba, mboxq),
+                                psli->sli_flag, flag);
+                goto out_not_finished;
+        }
+        rc = lpfc_mbox_dev_check(phba);
+        if (unlikely(rc)) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                                "(%d):2544 Mailbox command x%x (x%x) "
+                                "cannot issue Data: x%x x%x\n",
+                                mboxq->vport ? mboxq->vport->vpi : 0,
+                                mboxq->u.mb.mbxCommand,
+                                lpfc_sli4_mbox_opcode_get(phba, mboxq),
+                                psli->sli_flag, flag);
+                goto out_not_finished;
+        }
+
+        /* Put the mailbox command to the driver internal FIFO */
+        psli->slistat.mbox_busy++;
+        spin_lock_irqsave(&phba->hbalock, iflags);
+        lpfc_mbox_put(phba, mboxq);
+        spin_unlock_irqrestore(&phba->hbalock, iflags);
+        lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+                        "(%d):0354 Mbox cmd issue - Enqueue Data: "
+                        "x%x (x%x) x%x x%x x%x\n",
+                        mboxq->vport ? mboxq->vport->vpi : 0xffffff,
+                        bf_get(lpfc_mqe_command, &mboxq->u.mqe),
+                        lpfc_sli4_mbox_opcode_get(phba, mboxq),
+                        phba->pport->port_state,
+                        psli->sli_flag, MBX_NOWAIT);
+        /* Wake up worker thread to transport mailbox command from head */
+        lpfc_worker_wake_up(phba);
+
+        return MBX_BUSY;
+
+out_not_finished:
+        return MBX_NOT_FINISHED;
+}
+
+/**
+ * lpfc_sli4_post_async_mbox - Post an SLI4 mailbox command to device
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called by worker thread to send a mailbox command to
+ * SLI4 HBA firmware.
+ *
+ **/
+int
+lpfc_sli4_post_async_mbox(struct lpfc_hba *phba)
+{
+        struct lpfc_sli *psli = &phba->sli;
+        LPFC_MBOXQ_t *mboxq;
+        int rc = MBX_SUCCESS;
+        unsigned long iflags;
+        struct lpfc_mqe *mqe;
+        uint32_t mbx_cmnd;
+
+        /* Check interrupt mode before post async mailbox command */
+        if (unlikely(!phba->sli4_hba.intr_enable))
+                return MBX_NOT_FINISHED;
+
+        /* Check for mailbox command service token */
+        spin_lock_irqsave(&phba->hbalock, iflags);
+        if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) {
+                spin_unlock_irqrestore(&phba->hbalock, iflags);
+                return MBX_NOT_FINISHED;
+        }
+        if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
+                spin_unlock_irqrestore(&phba->hbalock, iflags);
+                return MBX_NOT_FINISHED;
+        }
+        if (unlikely(phba->sli.mbox_active)) {
+                spin_unlock_irqrestore(&phba->hbalock, iflags);
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                                "0384 There is pending active mailbox cmd\n");
+                return MBX_NOT_FINISHED;
+        }
+        /* Take the mailbox command service token */
+        psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
+
+        /* Get the next mailbox command from head of queue */
+        mboxq = lpfc_mbox_get(phba);
+
+        /* If no more mailbox command waiting for post, we're done */
+        if (!mboxq) {
+                psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+                spin_unlock_irqrestore(&phba->hbalock, iflags);
+                return MBX_SUCCESS;
+        }
+        phba->sli.mbox_active = mboxq;
+        spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+        /* Check device readiness for posting mailbox command */
+        rc = lpfc_mbox_dev_check(phba);
+        if (unlikely(rc))
+                /* Driver clean routine will clean up pending mailbox */
+                goto out_not_finished;
+
+        /* Prepare the mbox command to be posted */
+        mqe = &mboxq->u.mqe;
+        mbx_cmnd = bf_get(lpfc_mqe_command, mqe);
+
+        /* Start timer for the mbox_tmo and log some mailbox post messages */
+        mod_timer(&psli->mbox_tmo, (jiffies +
+                  (HZ * lpfc_mbox_tmo_val(phba, mbx_cmnd))));
+
+        lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
+                        "(%d):0355 Mailbox cmd x%x (x%x) issue Data: "
+                        "x%x x%x\n",
+                        mboxq->vport ? mboxq->vport->vpi : 0, mbx_cmnd,
+                        lpfc_sli4_mbox_opcode_get(phba, mboxq),
+                        phba->pport->port_state, psli->sli_flag);
+
+        if (mbx_cmnd != MBX_HEARTBEAT) {
+                if (mboxq->vport) {
+                        lpfc_debugfs_disc_trc(mboxq->vport,
+                                LPFC_DISC_TRC_MBOX_VPORT,
+                                "MBOX Send vport: cmd:x%x mb:x%x x%x",
+                                mbx_cmnd, mqe->un.mb_words[0],
+                                mqe->un.mb_words[1]);
+                } else {
+                        lpfc_debugfs_disc_trc(phba->pport,
+                                LPFC_DISC_TRC_MBOX,
+                                "MBOX Send: cmd:x%x mb:x%x x%x",
+                                mbx_cmnd, mqe->un.mb_words[0],
+                                mqe->un.mb_words[1]);
+                }
+        }
+        psli->slistat.mbox_cmd++;
+
+        /* Post the mailbox command to the port */
+        rc = lpfc_sli4_mq_put(phba->sli4_hba.mbx_wq, mqe);
+        if (rc != MBX_SUCCESS) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
+                                "(%d):2533 Mailbox command x%x (x%x) "
+                                "cannot issue Data: x%x x%x\n",
+                                mboxq->vport ? mboxq->vport->vpi : 0,
+                                mboxq->u.mb.mbxCommand,
+                                lpfc_sli4_mbox_opcode_get(phba, mboxq),
+                                psli->sli_flag, MBX_NOWAIT);
+                goto out_not_finished;
+        }
+
+        return rc;
+
+out_not_finished:
+        spin_lock_irqsave(&phba->hbalock, iflags);
+        mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
+        __lpfc_mbox_cmpl_put(phba, mboxq);
+        /* Release the token */
+        psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
+        phba->sli.mbox_active = NULL;
+        spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+        return MBX_NOT_FINISHED;
+}
+
+/**
+ * lpfc_sli_issue_mbox - Wrapper func for issuing mailbox command
+ * @phba: Pointer to HBA context object.
+ * @pmbox: Pointer to mailbox object.
+ * @flag: Flag indicating how the mailbox need to be processed.
+ *
+ * This routine wraps the actual SLI3 or SLI4 mailbox issuing routine from
+ * the API jump table function pointer from the lpfc_hba struct.
+ *
+ * Return codes the caller owns the mailbox command after the return of the
+ * function.
+ **/
+int
+lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
+{
+        return phba->lpfc_sli_issue_mbox(phba, pmbox, flag);
+}
+
+/**
+ * lpfc_mbox_api_table_setup - Set up mbox api fucntion jump table
+ * @phba: The hba struct for which this call is being executed.
+ * @dev_grp: The HBA PCI-Device group number.
+ *
+ * This routine sets up the mbox interface API function jump table in @phba
+ * struct.
+ * Returns: 0 - success, -ENODEV - failure.
+ **/
+int
+lpfc_mbox_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
+{
+
+        switch (dev_grp) {
+        case LPFC_PCI_DEV_LP:
+                phba->lpfc_sli_issue_mbox = lpfc_sli_issue_mbox_s3;
+                phba->lpfc_sli_handle_slow_ring_event =
+                                lpfc_sli_handle_slow_ring_event_s3;
+                phba->lpfc_sli_hbq_to_firmware = lpfc_sli_hbq_to_firmware_s3;
+                phba->lpfc_sli_brdrestart = lpfc_sli_brdrestart_s3;
+                phba->lpfc_sli_brdready = lpfc_sli_brdready_s3;
+                break;
+        case LPFC_PCI_DEV_OC:
+                phba->lpfc_sli_issue_mbox = lpfc_sli_issue_mbox_s4;
+                phba->lpfc_sli_handle_slow_ring_event =
+                                lpfc_sli_handle_slow_ring_event_s4;
+                phba->lpfc_sli_hbq_to_firmware = lpfc_sli_hbq_to_firmware_s4;
+                phba->lpfc_sli_brdrestart = lpfc_sli_brdrestart_s4;
+                phba->lpfc_sli_brdready = lpfc_sli_brdready_s4;
+                break;
+        default:
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "1420 Invalid HBA PCI-device group: 0x%x\n",
+                                dev_grp);
+                return -ENODEV;
+                break;
+        }
+        return 0;
+}
+
+/**
  * __lpfc_sli_ringtx_put - Add an iocb to the txq
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
@@ -3701,35 +5600,34 @@ lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 }
 
 /**
- * __lpfc_sli_issue_iocb - Lockless version of lpfc_sli_issue_iocb
+ * __lpfc_sli_issue_iocb_s3 - SLI3 device lockless ver of lpfc_sli_issue_iocb
  * @phba: Pointer to HBA context object.
- * @pring: Pointer to driver SLI ring object.
+ * @ring_number: SLI ring number to issue iocb on.
  * @piocb: Pointer to command iocb.
  * @flag: Flag indicating if this command can be put into txq.
  *
- * __lpfc_sli_issue_iocb is used by other functions in the driver
- * to issue an iocb command to the HBA. If the PCI slot is recovering
- * from error state or if HBA is resetting or if LPFC_STOP_IOCB_EVENT
- * flag is turned on, the function returns IOCB_ERROR.
- * When the link is down, this function allows only iocbs for
- * posting buffers.
- * This function finds next available slot in the command ring and
- * posts the command to the available slot and writes the port
- * attention register to request HBA start processing new iocb.
- * If there is no slot available in the ring and
- * flag & SLI_IOCB_RET_IOCB is set, the new iocb is added to the
- * txq, otherwise the function returns IOCB_BUSY.
- *
- * This function is called with hbalock held.
- * The function will return success after it successfully submit the
- * iocb to firmware or after adding to the txq.
+ * __lpfc_sli_issue_iocb_s3 is used by other functions in the driver to issue
+ * an iocb command to an HBA with SLI-3 interface spec. If the PCI slot is
+ * recovering from error state, if HBA is resetting or if LPFC_STOP_IOCB_EVENT
+ * flag is turned on, the function returns IOCB_ERROR. When the link is down,
+ * this function allows only iocbs for posting buffers. This function finds
+ * next available slot in the command ring and posts the command to the
+ * available slot and writes the port attention register to request HBA start
+ * processing new iocb. If there is no slot available in the ring and
+ * flag & SLI_IOCB_RET_IOCB is set, the new iocb is added to the txq, otherwise
+ * the function returns IOCB_BUSY.
+ *
+ * This function is called with hbalock held. The function will return success
+ * after it successfully submit the iocb to firmware or after adding to the
+ * txq.
  **/
 static int
-__lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+__lpfc_sli_issue_iocb_s3(struct lpfc_hba *phba, uint32_t ring_number,
                     struct lpfc_iocbq *piocb, uint32_t flag)
 {
         struct lpfc_iocbq *nextiocb;
         IOCB_t *iocb;
+        struct lpfc_sli_ring *pring = &phba->sli.ring[ring_number];
 
         if (piocb->iocb_cmpl && (!piocb->vport) &&
            (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
@@ -3833,6 +5731,493 @@ __lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
         return IOCB_BUSY;
 }
 
+/**
+ * lpfc_sli4_bpl2sgl - Convert the bpl/bde to a sgl.
+ * @phba: Pointer to HBA context object.
+ * @piocb: Pointer to command iocb.
+ * @sglq: Pointer to the scatter gather queue object.
+ *
+ * This routine converts the bpl or bde that is in the IOCB
+ * to a sgl list for the sli4 hardware. The physical address
+ * of the bpl/bde is converted back to a virtual address.
+ * If the IOCB contains a BPL then the list of BDE's is
+ * converted to sli4_sge's. If the IOCB contains a single
+ * BDE then it is converted to a single sli_sge.
+ * The IOCB is still in cpu endianess so the contents of
+ * the bpl can be used without byte swapping.
+ *
+ * Returns valid XRI = Success, NO_XRI = Failure.
+**/
+static uint16_t
+lpfc_sli4_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq,
+                struct lpfc_sglq *sglq)
+{
+        uint16_t xritag = NO_XRI;
+        struct ulp_bde64 *bpl = NULL;
+        struct ulp_bde64 bde;
+        struct sli4_sge *sgl  = NULL;
+        IOCB_t *icmd;
+        int numBdes = 0;
+        int i = 0;
+
+        if (!piocbq || !sglq)
+                return xritag;
+
+        sgl  = (struct sli4_sge *)sglq->sgl;
+        icmd = &piocbq->iocb;
+        if (icmd->un.genreq64.bdl.bdeFlags == BUFF_TYPE_BLP_64) {
+                numBdes = icmd->un.genreq64.bdl.bdeSize /
+                                sizeof(struct ulp_bde64);
+                /* The addrHigh and addrLow fields within the IOCB
+                 * have not been byteswapped yet so there is no
+                 * need to swap them back.
+                 */
+                bpl  = (struct ulp_bde64 *)
+                        ((struct lpfc_dmabuf *)piocbq->context3)->virt;
+
+                if (!bpl)
+                        return xritag;
+
+                for (i = 0; i < numBdes; i++) {
+                        /* Should already be byte swapped. */
+                        sgl->addr_hi =  bpl->addrHigh;
+                        sgl->addr_lo =  bpl->addrLow;
+                        /* swap the size field back to the cpu so we
+                         * can assign it to the sgl.
+                         */
+                        bde.tus.w  = le32_to_cpu(bpl->tus.w);
+                        bf_set(lpfc_sli4_sge_len, sgl, bde.tus.f.bdeSize);
+                        if ((i+1) == numBdes)
+                                bf_set(lpfc_sli4_sge_last, sgl, 1);
+                        else
+                                bf_set(lpfc_sli4_sge_last, sgl, 0);
+                        sgl->word2 = cpu_to_le32(sgl->word2);
+                        sgl->word3 = cpu_to_le32(sgl->word3);
+                        bpl++;
+                        sgl++;
+                }
+        } else if (icmd->un.genreq64.bdl.bdeFlags == BUFF_TYPE_BDE_64) {
+                        /* The addrHigh and addrLow fields of the BDE have not
+                         * been byteswapped yet so they need to be swapped
+                         * before putting them in the sgl.
+                         */
+                        sgl->addr_hi =
+                                cpu_to_le32(icmd->un.genreq64.bdl.addrHigh);
+                        sgl->addr_lo =
+                                cpu_to_le32(icmd->un.genreq64.bdl.addrLow);
+                        bf_set(lpfc_sli4_sge_len, sgl,
+                                icmd->un.genreq64.bdl.bdeSize);
+                        bf_set(lpfc_sli4_sge_last, sgl, 1);
+                        sgl->word2 = cpu_to_le32(sgl->word2);
+                        sgl->word3 = cpu_to_le32(sgl->word3);
+        }
+        return sglq->sli4_xritag;
+}
+
+/**
+ * lpfc_sli4_scmd_to_wqidx_distr - scsi command to SLI4 WQ index distribution
+ * @phba: Pointer to HBA context object.
+ * @piocb: Pointer to command iocb.
+ *
+ * This routine performs a round robin SCSI command to SLI4 FCP WQ index
+ * distribution.
+ *
+ * Return: index into SLI4 fast-path FCP queue index.
+ **/
+static uint32_t
+lpfc_sli4_scmd_to_wqidx_distr(struct lpfc_hba *phba, struct lpfc_iocbq *piocb)
+{
+        static uint32_t fcp_qidx;
+
+        return fcp_qidx++ % phba->cfg_fcp_wq_count;
+}
+
+/**
+ * lpfc_sli_iocb2wqe - Convert the IOCB to a work queue entry.
+ * @phba: Pointer to HBA context object.
+ * @piocb: Pointer to command iocb.
+ * @wqe: Pointer to the work queue entry.
+ *
+ * This routine converts the iocb command to its Work Queue Entry
+ * equivalent. The wqe pointer should not have any fields set when
+ * this routine is called because it will memcpy over them.
+ * This routine does not set the CQ_ID or the WQEC bits in the
+ * wqe.
+ *
+ * Returns: 0 = Success, IOCB_ERROR = Failure.
+ **/
+static int
+lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
+                union lpfc_wqe *wqe)
+{
+        uint32_t payload_len = 0;
+        uint8_t ct = 0;
+        uint32_t fip;
+        uint32_t abort_tag;
+        uint8_t command_type = ELS_COMMAND_NON_FIP;
+        uint8_t cmnd;
+        uint16_t xritag;
+        struct ulp_bde64 *bpl = NULL;
+
+        fip = bf_get(lpfc_fip_flag, &phba->sli4_hba.sli4_flags);
+        /* The fcp commands will set command type */
+        if (iocbq->iocb_flag &  LPFC_IO_FCP)
+                command_type = FCP_COMMAND;
+        else if (fip && (iocbq->iocb_flag & LPFC_FIP_ELS))
+                command_type = ELS_COMMAND_FIP;
+        else
+                command_type = ELS_COMMAND_NON_FIP;
+
+        /* Some of the fields are in the right position already */
+        memcpy(wqe, &iocbq->iocb, sizeof(union lpfc_wqe));
+        abort_tag = (uint32_t) iocbq->iotag;
+        xritag = iocbq->sli4_xritag;
+        wqe->words[7] = 0; /* The ct field has moved so reset */
+        /* words0-2 bpl convert bde */
+        if (iocbq->iocb.un.genreq64.bdl.bdeFlags == BUFF_TYPE_BLP_64) {
+                bpl  = (struct ulp_bde64 *)
+                        ((struct lpfc_dmabuf *)iocbq->context3)->virt;
+                if (!bpl)
+                        return IOCB_ERROR;
+
+                /* Should already be byte swapped. */
+                wqe->generic.bde.addrHigh =  le32_to_cpu(bpl->addrHigh);
+                wqe->generic.bde.addrLow =  le32_to_cpu(bpl->addrLow);
+                /* swap the size field back to the cpu so we
+                 * can assign it to the sgl.
+                 */
+                wqe->generic.bde.tus.w  = le32_to_cpu(bpl->tus.w);
+                payload_len = wqe->generic.bde.tus.f.bdeSize;
+        } else
+                payload_len = iocbq->iocb.un.fcpi64.bdl.bdeSize;
+
+        iocbq->iocb.ulpIoTag = iocbq->iotag;
+        cmnd = iocbq->iocb.ulpCommand;
+
+        switch (iocbq->iocb.ulpCommand) {
+        case CMD_ELS_REQUEST64_CR:
+                if (!iocbq->iocb.ulpLe) {
+                        lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "2007 Only Limited Edition cmd Format"
+                                " supported 0x%x\n",
+                                iocbq->iocb.ulpCommand);
+                        return IOCB_ERROR;
+                }
+                wqe->els_req.payload_len = payload_len;
+                /* Els_reguest64 has a TMO */
+                bf_set(wqe_tmo, &wqe->els_req.wqe_com,
+                        iocbq->iocb.ulpTimeout);
+                /* Need a VF for word 4 set the vf bit*/
+                bf_set(els_req64_vf, &wqe->els_req, 0);
+                /* And a VFID for word 12 */
+                bf_set(els_req64_vfid, &wqe->els_req, 0);
+                /*
+                 * Set ct field to 3, indicates that the context_tag field
+                 * contains the FCFI and remote N_Port_ID is
+                 * in word 5.
+                 */
+
+                ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l);
+                bf_set(lpfc_wqe_gen_context, &wqe->generic,
+                                iocbq->iocb.ulpContext);
+
+                bf_set(lpfc_wqe_gen_ct, &wqe->generic, ct);
+                bf_set(lpfc_wqe_gen_pu, &wqe->generic, 0);
+                /* CCP CCPE PV PRI in word10 were set in the memcpy */
+        break;
+        case CMD_XMIT_SEQUENCE64_CR:
+                /* word3 iocb=io_tag32 wqe=payload_offset */
+                /* payload offset used for multilpe outstanding
+                 * sequences on the same exchange
+                 */
+                wqe->words[3] = 0;
+                /* word4 relative_offset memcpy */
+                /* word5 r_ctl/df_ctl memcpy */
+                bf_set(lpfc_wqe_gen_pu, &wqe->generic, 0);
+                wqe->xmit_sequence.xmit_len = payload_len;
+        break;
+        case CMD_XMIT_BCAST64_CN:
+                /* word3 iocb=iotag32 wqe=payload_len */
+                wqe->words[3] = 0; /* no definition for this in wqe */
+                /* word4 iocb=rsvd wqe=rsvd */
+                /* word5 iocb=rctl/type/df_ctl wqe=rctl/type/df_ctl memcpy */
+                /* word6 iocb=ctxt_tag/io_tag wqe=ctxt_tag/xri */
+                bf_set(lpfc_wqe_gen_ct, &wqe->generic,
+                        ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l));
+        break;
+        case CMD_FCP_IWRITE64_CR:
+                command_type = FCP_COMMAND_DATA_OUT;
+                /* The struct for wqe fcp_iwrite has 3 fields that are somewhat
+                 * confusing.
+                 * word3 is payload_len: byte offset to the sgl entry for the
+                 * fcp_command.
+                 * word4 is total xfer len, same as the IOCB->ulpParameter.
+                 * word5 is initial xfer len 0 = wait for xfer-ready
+                 */
+
+                /* Always wait for xfer-ready before sending data */
+                wqe->fcp_iwrite.initial_xfer_len = 0;
+                /* word 4 (xfer length) should have been set on the memcpy */
+
+        /* allow write to fall through to read */
+        case CMD_FCP_IREAD64_CR:
+                /* FCP_CMD is always the 1st sgl entry */
+                wqe->fcp_iread.payload_len =
+                        payload_len + sizeof(struct fcp_rsp);
+
+                /* word 4 (xfer length) should have been set on the memcpy */
+
+                bf_set(lpfc_wqe_gen_erp, &wqe->generic,
+                        iocbq->iocb.ulpFCP2Rcvy);
+                bf_set(lpfc_wqe_gen_lnk, &wqe->generic, iocbq->iocb.ulpXS);
+                /* The XC bit and the XS bit are similar. The driver never
+                 * tracked whether or not the exchange was previouslly open.
+                 * XC = Exchange create, 0 is create. 1 is already open.
+                 * XS = link cmd: 1 do not close the exchange after command.
+                 * XS = 0 close exchange when command completes.
+                 * The only time we would not set the XC bit is when the XS bit
+                 * is set and we are sending our 2nd or greater command on
+                 * this exchange.
+                 */
+                /* Always open the exchange */
+                bf_set(wqe_xc, &wqe->fcp_iread.wqe_com, 0);
+
+                wqe->words[10] &= 0xffff0000; /* zero out ebde count */
+                bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU);
+                break;
+        case CMD_FCP_ICMND64_CR:
+                /* Always open the exchange */
+                bf_set(wqe_xc, &wqe->fcp_iread.wqe_com, 0);
+
+                wqe->words[4] = 0;
+                wqe->words[10] &= 0xffff0000; /* zero out ebde count */
+                bf_set(lpfc_wqe_gen_pu, &wqe->generic, 0);
+        break;
+        case CMD_GEN_REQUEST64_CR:
+                /* word3 command length is described as byte offset to the
+                 * rsp_data. Would always be 16, sizeof(struct sli4_sge)
+                 * sgl[0] = cmnd
+                 * sgl[1] = rsp.
+                 *
+                 */
+                wqe->gen_req.command_len = payload_len;
+                /* Word4 parameter  copied in the memcpy */
+                /* Word5 [rctl, type, df_ctl, la] copied in memcpy */
+                /* word6 context tag copied in memcpy */
+                if (iocbq->iocb.ulpCt_h  || iocbq->iocb.ulpCt_l) {
+                        ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l);
+                        lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "2015 Invalid CT %x command 0x%x\n",
+                                ct, iocbq->iocb.ulpCommand);
+                        return IOCB_ERROR;
+                }
+                bf_set(lpfc_wqe_gen_ct, &wqe->generic, 0);
+                bf_set(wqe_tmo, &wqe->gen_req.wqe_com,
+                        iocbq->iocb.ulpTimeout);
+
+                bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU);
+                command_type = OTHER_COMMAND;
+        break;
+        case CMD_XMIT_ELS_RSP64_CX:
+                /* words0-2 BDE memcpy */
+                /* word3 iocb=iotag32 wqe=rsvd */
+                wqe->words[3] = 0;
+                /* word4 iocb=did wge=rsvd. */
+                wqe->words[4] = 0;
+                /* word5 iocb=rsvd wge=did */
+                bf_set(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest,
+                         iocbq->iocb.un.elsreq64.remoteID);
+
+                bf_set(lpfc_wqe_gen_ct, &wqe->generic,
+                        ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l));
+
+                bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU);
+                bf_set(wqe_rcvoxid, &wqe->generic, iocbq->iocb.ulpContext);
+                if (!iocbq->iocb.ulpCt_h && iocbq->iocb.ulpCt_l)
+                        bf_set(lpfc_wqe_gen_context, &wqe->generic,
+                               iocbq->vport->vpi + phba->vpi_base);
+                command_type = OTHER_COMMAND;
+        break;
+        case CMD_CLOSE_XRI_CN:
+        case CMD_ABORT_XRI_CN:
+        case CMD_ABORT_XRI_CX:
+                /* words 0-2 memcpy should be 0 rserved */
+                /* port will send abts */
+                if (iocbq->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
+                        /*
+                         * The link is down so the fw does not need to send abts
+                         * on the wire.
+                         */
+                        bf_set(abort_cmd_ia, &wqe->abort_cmd, 1);
+                else
+                        bf_set(abort_cmd_ia, &wqe->abort_cmd, 0);
+                bf_set(abort_cmd_criteria, &wqe->abort_cmd, T_XRI_TAG);
+                abort_tag = iocbq->iocb.un.acxri.abortIoTag;
+                wqe->words[5] = 0;
+                bf_set(lpfc_wqe_gen_ct, &wqe->generic,
+                        ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l));
+                abort_tag = iocbq->iocb.un.acxri.abortIoTag;
+                wqe->generic.abort_tag = abort_tag;
+                /*
+                 * The abort handler will send us CMD_ABORT_XRI_CN or
+                 * CMD_CLOSE_XRI_CN and the fw only accepts CMD_ABORT_XRI_CX
+                 */
+                bf_set(lpfc_wqe_gen_command, &wqe->generic, CMD_ABORT_XRI_CX);
+                cmnd = CMD_ABORT_XRI_CX;
+                command_type = OTHER_COMMAND;
+                xritag = 0;
+        break;
+        case CMD_XRI_ABORTED_CX:
+        case CMD_CREATE_XRI_CR: /* Do we expect to use this? */
+                /* words0-2 are all 0's no bde */
+                /* word3 and word4 are rsvrd */
+                wqe->words[3] = 0;
+                wqe->words[4] = 0;
+                /* word5 iocb=rsvd wge=did */
+                /* There is no remote port id in the IOCB? */
+                /* Let this fall through and fail */
+        case CMD_IOCB_FCP_IBIDIR64_CR: /* bidirectional xfer */
+        case CMD_FCP_TSEND64_CX: /* Target mode send xfer-ready */
+        case CMD_FCP_TRSP64_CX: /* Target mode rcv */
+        case CMD_FCP_AUTO_TRSP_CX: /* Auto target rsp */
+        default:
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "2014 Invalid command 0x%x\n",
+                                iocbq->iocb.ulpCommand);
+                return IOCB_ERROR;
+        break;
+
+        }
+        bf_set(lpfc_wqe_gen_xri, &wqe->generic, xritag);
+        bf_set(lpfc_wqe_gen_request_tag, &wqe->generic, iocbq->iotag);
+        wqe->generic.abort_tag = abort_tag;
+        bf_set(lpfc_wqe_gen_cmd_type, &wqe->generic, command_type);
+        bf_set(lpfc_wqe_gen_command, &wqe->generic, cmnd);
+        bf_set(lpfc_wqe_gen_class, &wqe->generic, iocbq->iocb.ulpClass);
+        bf_set(lpfc_wqe_gen_cq_id, &wqe->generic, LPFC_WQE_CQ_ID_DEFAULT);
+
+        return 0;
+}
+
+/**
+ * __lpfc_sli_issue_iocb_s4 - SLI4 device lockless ver of lpfc_sli_issue_iocb
+ * @phba: Pointer to HBA context object.
+ * @ring_number: SLI ring number to issue iocb on.
+ * @piocb: Pointer to command iocb.
+ * @flag: Flag indicating if this command can be put into txq.
+ *
+ * __lpfc_sli_issue_iocb_s4 is used by other functions in the driver to issue
+ * an iocb command to an HBA with SLI-4 interface spec.
+ *
+ * This function is called with hbalock held. The function will return success
+ * after it successfully submit the iocb to firmware or after adding to the
+ * txq.
+ **/
+static int
+__lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number,
+                         struct lpfc_iocbq *piocb, uint32_t flag)
+{
+        struct lpfc_sglq *sglq;
+        uint16_t xritag;
+        union lpfc_wqe wqe;
+        struct lpfc_sli_ring *pring = &phba->sli.ring[ring_number];
+        uint32_t fcp_wqidx;
+
+        if (piocb->sli4_xritag == NO_XRI) {
+                if (piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
+                        piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
+                        sglq = NULL;
+                else {
+                        sglq = __lpfc_sli_get_sglq(phba);
+                        if (!sglq)
+                                return IOCB_ERROR;
+                        piocb->sli4_xritag = sglq->sli4_xritag;
+                }
+        } else if (piocb->iocb_flag &  LPFC_IO_FCP) {
+                sglq = NULL; /* These IO's already have an XRI and
+                              * a mapped sgl.
+                              */
+        } else {
+                /* This is a continuation of a commandi,(CX) so this
+                 * sglq is on the active list
+                 */
+                sglq = __lpfc_get_active_sglq(phba, piocb->sli4_xritag);
+                if (!sglq)
+                        return IOCB_ERROR;
+        }
+
+        if (sglq) {
+                xritag = lpfc_sli4_bpl2sgl(phba, piocb, sglq);
+                if (xritag != sglq->sli4_xritag)
+                        return IOCB_ERROR;
+        }
+
+        if (lpfc_sli4_iocb2wqe(phba, piocb, &wqe))
+                return IOCB_ERROR;
+
+        if (piocb->iocb_flag &  LPFC_IO_FCP) {
+                fcp_wqidx = lpfc_sli4_scmd_to_wqidx_distr(phba, piocb);
+                if (lpfc_sli4_wq_put(phba->sli4_hba.fcp_wq[fcp_wqidx], &wqe))
+                        return IOCB_ERROR;
+        } else {
+                if (lpfc_sli4_wq_put(phba->sli4_hba.els_wq, &wqe))
+                        return IOCB_ERROR;
+        }
+        lpfc_sli_ringtxcmpl_put(phba, pring, piocb);
+
+        return 0;
+}
+
+/**
+ * __lpfc_sli_issue_iocb - Wrapper func of lockless version for issuing iocb
+ *
+ * This routine wraps the actual lockless version for issusing IOCB function
+ * pointer from the lpfc_hba struct.
+ *
+ * Return codes:
+ *      IOCB_ERROR - Error
+ *      IOCB_SUCCESS - Success
+ *      IOCB_BUSY - Busy
+ **/
+static inline int
+__lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number,
+                struct lpfc_iocbq *piocb, uint32_t flag)
+{
+        return phba->__lpfc_sli_issue_iocb(phba, ring_number, piocb, flag);
+}
+
+/**
+ * lpfc_sli_api_table_setup - Set up sli api fucntion jump table
+ * @phba: The hba struct for which this call is being executed.
+ * @dev_grp: The HBA PCI-Device group number.
+ *
+ * This routine sets up the SLI interface API function jump table in @phba
+ * struct.
+ * Returns: 0 - success, -ENODEV - failure.
+ **/
+int
+lpfc_sli_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
+{
+
+        switch (dev_grp) {
+        case LPFC_PCI_DEV_LP:
+                phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s3;
+                phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s3;
+                break;
+        case LPFC_PCI_DEV_OC:
+                phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s4;
+                phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s4;
+                break;
+        default:
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "1419 Invalid HBA PCI-device group: 0x%x\n",
+                                dev_grp);
+                return -ENODEV;
+                break;
+        }
+        phba->lpfc_get_iocb_from_iocbq = lpfc_get_iocb_from_iocbq;
+        return 0;
+}
 
 /**
  * lpfc_sli_issue_iocb - Wrapper function for __lpfc_sli_issue_iocb
@@ -3848,14 +6233,14 @@ __lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
  * functions which do not hold hbalock.
  **/
 int
-lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number,
                     struct lpfc_iocbq *piocb, uint32_t flag)
 {
         unsigned long iflags;
         int rc;
 
         spin_lock_irqsave(&phba->hbalock, iflags);
-        rc = __lpfc_sli_issue_iocb(phba, pring, piocb, flag);
+        rc = __lpfc_sli_issue_iocb(phba, ring_number, piocb, flag);
         spin_unlock_irqrestore(&phba->hbalock, iflags);
 
         return rc;
@@ -4148,6 +6533,52 @@ lpfc_sli_queue_setup(struct lpfc_hba *phba)
 }
 
 /**
+ * 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.
  *
@@ -4240,9 +6671,11 @@ lpfc_sli_hba_down(struct lpfc_hba *phba)
         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);
 
@@ -4287,28 +6720,42 @@ lpfc_sli_hba_down(struct lpfc_hba *phba)
 
         /* Return any active mbox cmds */
         del_timer_sync(&psli->mbox_tmo);
-        spin_lock_irqsave(&phba->hbalock, flags);
 
-        spin_lock(&phba->pport->work_port_lock);
+        spin_lock_irqsave(&phba->pport->work_port_lock, flags);
         phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
-        spin_unlock(&phba->pport->work_port_lock);
+        spin_unlock_irqrestore(&phba->pport->work_port_lock, flags);
 
-        /* Return any pending or completed mbox cmds */
-        list_splice_init(&phba->sli.mboxq, &completions);
-        if (psli->mbox_active) {
-                list_add_tail(&psli->mbox_active->list, &completions);
-                psli->mbox_active = NULL;
-                psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
-        }
-        list_splice_init(&phba->sli.mboxq_cmpl, &completions);
-        spin_unlock_irqrestore(&phba->hbalock, flags);
+        return 1;
+}
+
+/**
+ * lpfc_sli4_hba_down - PCI function resource cleanup for the SLI4 HBA
+ * @phba: Pointer to HBA context object.
+ *
+ * This function cleans up all queues, iocb, buffers, mailbox commands while
+ * shutting down the SLI4 HBA FCoE function. This function is called with no
+ * lock held and always returns 1.
+ *
+ * This function does the following to cleanup driver FCoE function resources:
+ * - Free discovery resources for each virtual port
+ * - Cleanup any pending fabric iocbs
+ * - Iterate through the iocb txq and free each entry in the list.
+ * - Free up any buffer posted to the HBA.
+ * - Clean up all the queue entries: WQ, RQ, MQ, EQ, CQ, etc.
+ * - Free mailbox commands in the mailbox queue.
+ **/
+int
+lpfc_sli4_hba_down(struct lpfc_hba *phba)
+{
+        /* Stop the SLI4 device port */
+        lpfc_stop_port(phba);
+
+        /* Tear down the queues in the HBA */
+        lpfc_sli4_queue_unset(phba);
+
+        /* unregister default FCFI from the HBA */
+        lpfc_sli4_fcfi_unreg(phba, phba->fcf.fcfi);
 
-        while (!list_empty(&completions)) {
-                list_remove_head(&completions, pmb, LPFC_MBOXQ_t, list);
-                pmb->mb.mbxStatus = MBX_NOT_FINISHED;
-                if (pmb->mbox_cmpl)
-                        pmb->mbox_cmpl(phba,pmb);
-        }
         return 1;
 }
 
@@ -4639,7 +7086,10 @@ lpfc_sli_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
         iabt = &abtsiocbp->iocb;
         iabt->un.acxri.abortType = ABORT_TYPE_ABTS;
         iabt->un.acxri.abortContextTag = icmd->ulpContext;
-        iabt->un.acxri.abortIoTag = icmd->ulpIoTag;
+        if (phba->sli_rev == LPFC_SLI_REV4)
+                iabt->un.acxri.abortIoTag = cmdiocb->sli4_xritag;
+        else
+                iabt->un.acxri.abortIoTag = icmd->ulpIoTag;
         iabt->ulpLe = 1;
         iabt->ulpClass = icmd->ulpClass;
 
@@ -4655,7 +7105,7 @@ lpfc_sli_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                          "abort cmd iotag x%x\n",
                          iabt->un.acxri.abortContextTag,
                          iabt->un.acxri.abortIoTag, abtsiocbp->iotag);
-        retval = __lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0);
+        retval = __lpfc_sli_issue_iocb(phba, pring->ringno, abtsiocbp, 0);
 
         if (retval)
                 __lpfc_sli_release_iocbq(phba, abtsiocbp);
@@ -4838,7 +7288,10 @@ lpfc_sli_abort_iocb(struct lpfc_vport *vport, struct lpfc_sli_ring *pring,
                 cmd = &iocbq->iocb;
                 abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
                 abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
-                abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
+                if (phba->sli_rev == LPFC_SLI_REV4)
+                        abtsiocb->iocb.un.acxri.abortIoTag = iocbq->sli4_xritag;
+                else
+                        abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
                 abtsiocb->iocb.ulpLe = 1;
                 abtsiocb->iocb.ulpClass = cmd->ulpClass;
                 abtsiocb->vport = phba->pport;
@@ -4850,7 +7303,8 @@ lpfc_sli_abort_iocb(struct lpfc_vport *vport, struct lpfc_sli_ring *pring,
 
                 /* Setup callback routine and issue the command. */
                 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
-                ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0);
+                ret_val = lpfc_sli_issue_iocb(phba, pring->ringno,
+                                              abtsiocb, 0);
                 if (ret_val == IOCB_ERROR) {
                         lpfc_sli_release_iocbq(phba, abtsiocb);
                         errcnt++;
@@ -4900,6 +7354,32 @@ lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
 }
 
 /**
+ * lpfc_chk_iocb_flg - Test IOCB flag with lock held.
+ * @phba: Pointer to HBA context object..
+ * @piocbq: Pointer to command iocb.
+ * @flag: Flag to test.
+ *
+ * This routine grabs the hbalock and then test the iocb_flag to
+ * see if the passed in flag is set.
+ * Returns:
+ * 1 if flag is set.
+ * 0 if flag is not set.
+ **/
+static int
+lpfc_chk_iocb_flg(struct lpfc_hba *phba,
+                 struct lpfc_iocbq *piocbq, uint32_t flag)
+{
+        unsigned long iflags;
+        int ret;
+
+        spin_lock_irqsave(&phba->hbalock, iflags);
+        ret = piocbq->iocb_flag & flag;
+        spin_unlock_irqrestore(&phba->hbalock, iflags);
+        return ret;
+
+}
+
+/**
  * lpfc_sli_issue_iocb_wait - Synchronous function to issue iocb commands
  * @phba: Pointer to HBA context object..
  * @pring: Pointer to sli ring.
@@ -4931,7 +7411,7 @@ lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
  **/
 int
 lpfc_sli_issue_iocb_wait(struct lpfc_hba *phba,
-                         struct lpfc_sli_ring *pring,
+                         uint32_t ring_number,
                          struct lpfc_iocbq *piocb,
                          struct lpfc_iocbq *prspiocbq,
                          uint32_t timeout)
@@ -4962,11 +7442,11 @@ lpfc_sli_issue_iocb_wait(struct lpfc_hba *phba,
                 readl(phba->HCregaddr); /* flush */
         }
 
-        retval = lpfc_sli_issue_iocb(phba, pring, piocb, 0);
+        retval = lpfc_sli_issue_iocb(phba, ring_number, piocb, 0);
         if (retval == IOCB_SUCCESS) {
                 timeout_req = timeout * HZ;
                 timeleft = wait_event_timeout(done_q,
-                                piocb->iocb_flag & LPFC_IO_WAKE,
+                                lpfc_chk_iocb_flg(phba, piocb, LPFC_IO_WAKE),
                                 timeout_req);
 
                 if (piocb->iocb_flag & LPFC_IO_WAKE) {
@@ -5077,53 +7557,150 @@ lpfc_sli_issue_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq,
 }
 
 /**
- * lpfc_sli_flush_mbox_queue - mailbox queue cleanup function
+ * lpfc_sli_mbox_sys_shutdown - shutdown mailbox command sub-system
  * @phba: Pointer to HBA context.
  *
- * This function is called to cleanup any pending mailbox
- * objects in the driver queue before bringing the HBA offline.
- * This function is called while resetting the HBA.
- * The function is called without any lock held. The function
- * takes hbalock to update SLI data structure.
- * This function returns 1 when there is an active mailbox
- * command pending else returns 0.
+ * This function is called to shutdown the driver's mailbox sub-system.
+ * It first marks the mailbox sub-system is in a block state to prevent
+ * the asynchronous mailbox command from issued off the pending mailbox
+ * command queue. If the mailbox command sub-system shutdown is due to
+ * HBA error conditions such as EEH or ERATT, this routine shall invoke
+ * the mailbox sub-system flush routine to forcefully bring down the
+ * mailbox sub-system. Otherwise, if it is due to normal condition (such
+ * as with offline or HBA function reset), this routine will wait for the
+ * outstanding mailbox command to complete before invoking the mailbox
+ * sub-system flush routine to gracefully bring down mailbox sub-system.
  **/
-int
-lpfc_sli_flush_mbox_queue(struct lpfc_hba * phba)
+void
+lpfc_sli_mbox_sys_shutdown(struct lpfc_hba *phba)
 {
-        struct lpfc_vport *vport = phba->pport;
-        int i = 0;
-        uint32_t ha_copy;
+        struct lpfc_sli *psli = &phba->sli;
+        uint8_t actcmd = MBX_HEARTBEAT;
+        unsigned long timeout;
 
-        while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE && !vport->stopped) {
-                if (i++ > LPFC_MBOX_TMO * 1000)
-                        return 1;
+        spin_lock_irq(&phba->hbalock);
+        psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
+        spin_unlock_irq(&phba->hbalock);
 
-                /*
-                 * Call lpfc_sli_handle_mb_event only if a mailbox cmd
-                 * did finish. This way we won't get the misleading
-                 * "Stray Mailbox Interrupt" message.
-                 */
+        if (psli->sli_flag & LPFC_SLI_ACTIVE) {
                 spin_lock_irq(&phba->hbalock);
-                ha_copy = phba->work_ha;
-                phba->work_ha &= ~HA_MBATT;
+                if (phba->sli.mbox_active)
+                        actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
                 spin_unlock_irq(&phba->hbalock);
+                /* Determine how long we might wait for the active mailbox
+                 * command to be gracefully completed by firmware.
+                 */
+                timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, actcmd) *
+                                           1000) + jiffies;
+                while (phba->sli.mbox_active) {
+                        /* Check active mailbox complete status every 2ms */
+                        msleep(2);
+                        if (time_after(jiffies, timeout))
+                                /* Timeout, let the mailbox flush routine to
+                                 * forcefully release active mailbox command
+                                 */
+                                break;
+                }
+        }
+        lpfc_sli_mbox_sys_flush(phba);
+}
 
-                if (ha_copy & HA_MBATT)
-                        if (lpfc_sli_handle_mb_event(phba) == 0)
-                                i = 0;
+/**
+ * lpfc_sli_eratt_read - read sli-3 error attention events
+ * @phba: Pointer to HBA context.
+ *
+ * This function is called to read the SLI3 device error attention registers
+ * for possible error attention events. The caller must hold the hostlock
+ * with spin_lock_irq().
+ *
+ * This fucntion returns 1 when there is Error Attention in the Host Attention
+ * Register and returns 0 otherwise.
+ **/
+static int
+lpfc_sli_eratt_read(struct lpfc_hba *phba)
+{
+        uint32_t ha_copy;
+
+        /* Read chip Host Attention (HA) register */
+        ha_copy = readl(phba->HAregaddr);
+        if (ha_copy & HA_ERATT) {
+                /* Read host status register to retrieve error event */
+                lpfc_sli_read_hs(phba);
 
-                msleep(1);
+                /* Check if there is a deferred error condition is active */
+                if ((HS_FFER1 & phba->work_hs) &&
+                    ((HS_FFER2 | HS_FFER3 | HS_FFER4 | HS_FFER5 |
+                     HS_FFER6 | HS_FFER7) & phba->work_hs)) {
+                        phba->hba_flag |= DEFER_ERATT;
+                        /* Clear all interrupt enable conditions */
+                        writel(0, phba->HCregaddr);
+                        readl(phba->HCregaddr);
+                }
+
+                /* Set the driver HA work bitmap */
+                phba->work_ha |= HA_ERATT;
+                /* Indicate polling handles this ERATT */
+                phba->hba_flag |= HBA_ERATT_HANDLED;
+                return 1;
         }
+        return 0;
+}
+
+/**
+ * lpfc_sli4_eratt_read - read sli-4 error attention events
+ * @phba: Pointer to HBA context.
+ *
+ * This function is called to read the SLI4 device error attention registers
+ * for possible error attention events. The caller must hold the hostlock
+ * with spin_lock_irq().
+ *
+ * This fucntion returns 1 when there is Error Attention in the Host Attention
+ * Register and returns 0 otherwise.
+ **/
+static int
+lpfc_sli4_eratt_read(struct lpfc_hba *phba)
+{
+        uint32_t uerr_sta_hi, uerr_sta_lo;
+        uint32_t onlnreg0, onlnreg1;
 
-        return (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) ? 1 : 0;
+        /* For now, use the SLI4 device internal unrecoverable error
+         * registers for error attention. This can be changed later.
+         */
+        onlnreg0 = readl(phba->sli4_hba.ONLINE0regaddr);
+        onlnreg1 = readl(phba->sli4_hba.ONLINE1regaddr);
+        if ((onlnreg0 != LPFC_ONLINE_NERR) || (onlnreg1 != LPFC_ONLINE_NERR)) {
+                uerr_sta_lo = readl(phba->sli4_hba.UERRLOregaddr);
+                uerr_sta_hi = readl(phba->sli4_hba.UERRHIregaddr);
+                if (uerr_sta_lo || uerr_sta_hi) {
+                        lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                        "1423 HBA Unrecoverable error: "
+                                        "uerr_lo_reg=0x%x, uerr_hi_reg=0x%x, "
+                                        "online0_reg=0x%x, online1_reg=0x%x\n",
+                                        uerr_sta_lo, uerr_sta_hi,
+                                        onlnreg0, onlnreg1);
+                        /* TEMP: as the driver error recover logic is not
+                         * fully developed, we just log the error message
+                         * and the device error attention action is now
+                         * temporarily disabled.
+                         */
+                        return 0;
+                        phba->work_status[0] = uerr_sta_lo;
+                        phba->work_status[1] = uerr_sta_hi;
+                        /* Set the driver HA work bitmap */
+                        phba->work_ha |= HA_ERATT;
+                        /* Indicate polling handles this ERATT */
+                        phba->hba_flag |= HBA_ERATT_HANDLED;
+                        return 1;
+                }
+        }
+        return 0;
 }
 
 /**
  * lpfc_sli_check_eratt - check error attention events
  * @phba: Pointer to HBA context.
  *
- * This function is called form timer soft interrupt context to check HBA's
+ * This function is called from timer soft interrupt context to check HBA's
  * error attention register bit for error attention events.
  *
  * This fucntion returns 1 when there is Error Attention in the Host Attention
@@ -5134,10 +7711,6 @@ lpfc_sli_check_eratt(struct lpfc_hba *phba)
 {
         uint32_t ha_copy;
 
-        /* If PCI channel is offline, don't process it */
-        if (unlikely(pci_channel_offline(phba->pcidev)))
-                return 0;
-
         /* If somebody is waiting to handle an eratt, don't process it
          * here. The brdkill function will do this.
          */
@@ -5161,56 +7734,84 @@ lpfc_sli_check_eratt(struct lpfc_hba *phba)
                 return 0;
         }
 
-        /* Read chip Host Attention (HA) register */
-        ha_copy = readl(phba->HAregaddr);
-        if (ha_copy & HA_ERATT) {
-                /* Read host status register to retrieve error event */
-                lpfc_sli_read_hs(phba);
-
-                /* Check if there is a deferred error condition is active */
-                if ((HS_FFER1 & phba->work_hs) &&
-                        ((HS_FFER2 | HS_FFER3 | HS_FFER4 | HS_FFER5 |
-                        HS_FFER6 | HS_FFER7) & phba->work_hs)) {
-                        phba->hba_flag |= DEFER_ERATT;
-                        /* Clear all interrupt enable conditions */
-                        writel(0, phba->HCregaddr);
-                        readl(phba->HCregaddr);
-                }
-
-                /* Set the driver HA work bitmap */
-                phba->work_ha |= HA_ERATT;
-                /* Indicate polling handles this ERATT */
-                phba->hba_flag |= HBA_ERATT_HANDLED;
+        /* If PCI channel is offline, don't process it */
+        if (unlikely(pci_channel_offline(phba->pcidev))) {
                 spin_unlock_irq(&phba->hbalock);
-                return 1;
+                return 0;
+        }
+
+        switch (phba->sli_rev) {
+        case LPFC_SLI_REV2:
+        case LPFC_SLI_REV3:
+                /* Read chip Host Attention (HA) register */
+                ha_copy = lpfc_sli_eratt_read(phba);
+                break;
+        case LPFC_SLI_REV4:
+                /* Read devcie Uncoverable Error (UERR) registers */
+                ha_copy = lpfc_sli4_eratt_read(phba);
+                break;
+        default:
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "0299 Invalid SLI revision (%d)\n",
+                                phba->sli_rev);
+                ha_copy = 0;
+                break;
         }
         spin_unlock_irq(&phba->hbalock);
+
+        return ha_copy;
+}
+
+/**
+ * lpfc_intr_state_check - Check device state for interrupt handling
+ * @phba: Pointer to HBA context.
+ *
+ * This inline routine checks whether a device or its PCI slot is in a state
+ * that the interrupt should be handled.
+ *
+ * This function returns 0 if the device or the PCI slot is in a state that
+ * interrupt should be handled, otherwise -EIO.
+ */
+static inline int
+lpfc_intr_state_check(struct lpfc_hba *phba)
+{
+        /* If the pci channel is offline, ignore all the interrupts */
+        if (unlikely(pci_channel_offline(phba->pcidev)))
+                return -EIO;
+
+        /* Update device level interrupt statistics */
+        phba->sli.slistat.sli_intr++;
+
+        /* Ignore all interrupts during initialization. */
+        if (unlikely(phba->link_state < LPFC_LINK_DOWN))
+                return -EIO;
+
         return 0;
 }
 
 /**
- * lpfc_sp_intr_handler - The slow-path interrupt handler of lpfc driver
+ * lpfc_sli_sp_intr_handler - Slow-path interrupt handler to SLI-3 device
  * @irq: Interrupt number.
  * @dev_id: The device context pointer.
  *
  * This function is directly called from the PCI layer as an interrupt
- * service routine when the device is enabled with MSI-X multi-message
- * interrupt mode and there are slow-path events in the HBA. However,
- * when the device is enabled with either MSI or Pin-IRQ interrupt mode,
- * this function is called as part of the device-level interrupt handler.
- * When the PCI slot is in error recovery or the HBA is undergoing
- * initialization, the interrupt handler will not process the interrupt.
- * The link attention and ELS ring attention events are handled by the
- * worker thread. The interrupt handler signals the worker thread and
- * and returns for these events. This function is called without any
- * lock held. It gets the hbalock to access and update SLI data
+ * service routine when device with SLI-3 interface spec is enabled with
+ * MSI-X multi-message interrupt mode and there are slow-path events in
+ * the HBA. However, when the device is enabled with either MSI or Pin-IRQ
+ * interrupt mode, this function is called as part of the device-level
+ * interrupt handler. When the PCI slot is in error recovery or the HBA
+ * is undergoing initialization, the interrupt handler will not process
+ * the interrupt. The link attention and ELS ring attention events are
+ * handled by the worker thread. The interrupt handler signals the worker
+ * thread and returns for these events. This function is called without
+ * any lock held. It gets the hbalock to access and update SLI data
  * structures.
  *
  * This function returns IRQ_HANDLED when interrupt is handled else it
  * returns IRQ_NONE.
  **/
 irqreturn_t
-lpfc_sp_intr_handler(int irq, void *dev_id)
+lpfc_sli_sp_intr_handler(int irq, void *dev_id)
 {
         struct lpfc_hba  *phba;
         uint32_t ha_copy;
@@ -5240,13 +7841,8 @@ lpfc_sp_intr_handler(int irq, void *dev_id)
          * individual interrupt handler in MSI-X multi-message interrupt mode
          */
         if (phba->intr_type == MSIX) {
-                /* If the pci channel is offline, ignore all the interrupts */
-                if (unlikely(pci_channel_offline(phba->pcidev)))
-                        return IRQ_NONE;
-                /* Update device-level interrupt statistics */
-                phba->sli.slistat.sli_intr++;
-                /* Ignore all interrupts during initialization. */
-                if (unlikely(phba->link_state < LPFC_LINK_DOWN))
+                /* Check device state for handling interrupt */
+                if (lpfc_intr_state_check(phba))
                         return IRQ_NONE;
                 /* Need to read HA REG for slow-path events */
                 spin_lock_irqsave(&phba->hbalock, iflag);
@@ -5271,7 +7867,7 @@ lpfc_sp_intr_handler(int irq, void *dev_id)
                  * interrupt.
                  */
                 if (unlikely(phba->hba_flag & DEFER_ERATT)) {
-                        spin_unlock_irq(&phba->hbalock);
+                        spin_unlock_irqrestore(&phba->hbalock, iflag);
                         return IRQ_NONE;
                 }
 
@@ -5364,7 +7960,7 @@ lpfc_sp_intr_handler(int irq, void *dev_id)
 
                 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;
 
@@ -5434,7 +8030,8 @@ lpfc_sp_intr_handler(int irq, void *dev_id)
                                                         LOG_MBOX | LOG_SLI,
                                                         "0350 rc should have"
                                                         "been MBX_BUSY");
-                                                goto send_current_mbox;
+                                                if (rc != MBX_NOT_FINISHED)
+                                                        goto send_current_mbox;
                                         }
                                 }
                                 spin_lock_irqsave(
@@ -5471,29 +8068,29 @@ send_current_mbox:
         }
         return IRQ_HANDLED;
 
-} /* lpfc_sp_intr_handler */
+} /* lpfc_sli_sp_intr_handler */
 
 /**
- * lpfc_fp_intr_handler - The fast-path interrupt handler of lpfc driver
+ * lpfc_sli_fp_intr_handler - Fast-path interrupt handler to SLI-3 device.
  * @irq: Interrupt number.
  * @dev_id: The device context pointer.
  *
  * This function is directly called from the PCI layer as an interrupt
- * service routine when the device is enabled with MSI-X multi-message
- * interrupt mode and there is a fast-path FCP IOCB ring event in the
- * HBA. However, when the device is enabled with either MSI or Pin-IRQ
- * interrupt mode, this function is called as part of the device-level
- * interrupt handler. When the PCI slot is in error recovery or the HBA
- * is undergoing initialization, the interrupt handler will not process
- * the interrupt. The SCSI FCP fast-path ring event are handled in the
- * intrrupt context. This function is called without any lock held. It
- * gets the hbalock to access and update SLI data structures.
+ * service routine when device with SLI-3 interface spec is enabled with
+ * MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB
+ * ring event in the HBA. However, when the device is enabled with either
+ * MSI or Pin-IRQ interrupt mode, this function is called as part of the
+ * device-level interrupt handler. When the PCI slot is in error recovery
+ * or the HBA is undergoing initialization, the interrupt handler will not
+ * process the interrupt. The SCSI FCP fast-path ring event are handled in
+ * the intrrupt context. This function is called without any lock held.
+ * It gets the hbalock to access and update SLI data structures.
  *
  * This function returns IRQ_HANDLED when interrupt is handled else it
  * returns IRQ_NONE.
  **/
 irqreturn_t
-lpfc_fp_intr_handler(int irq, void *dev_id)
+lpfc_sli_fp_intr_handler(int irq, void *dev_id)
 {
         struct lpfc_hba  *phba;
         uint32_t ha_copy;
@@ -5513,13 +8110,8 @@ lpfc_fp_intr_handler(int irq, void *dev_id)
          * individual interrupt handler in MSI-X multi-message interrupt mode
          */
         if (phba->intr_type == MSIX) {
-                /* If pci channel is offline, ignore all the interrupts */
-                if (unlikely(pci_channel_offline(phba->pcidev)))
-                        return IRQ_NONE;
-                /* Update device-level interrupt statistics */
-                phba->sli.slistat.sli_intr++;
-                /* Ignore all interrupts during initialization. */
-                if (unlikely(phba->link_state < LPFC_LINK_DOWN))
+                /* Check device state for handling interrupt */
+                if (lpfc_intr_state_check(phba))
                         return IRQ_NONE;
                 /* Need to read HA REG for FCP ring and other ring events */
                 ha_copy = readl(phba->HAregaddr);
@@ -5530,7 +8122,7 @@ lpfc_fp_intr_handler(int irq, void *dev_id)
                  * any interrupt.
                  */
                 if (unlikely(phba->hba_flag & DEFER_ERATT)) {
-                        spin_unlock_irq(&phba->hbalock);
+                        spin_unlock_irqrestore(&phba->hbalock, iflag);
                         return IRQ_NONE;
                 }
                 writel((ha_copy & (HA_R0_CLR_MSK | HA_R1_CLR_MSK)),
@@ -5566,26 +8158,27 @@ lpfc_fp_intr_handler(int irq, void *dev_id)
                 }
         }
         return IRQ_HANDLED;
-}  /* lpfc_fp_intr_handler */
+}  /* lpfc_sli_fp_intr_handler */
 
 /**
- * lpfc_intr_handler - The device-level interrupt handler of lpfc driver
+ * lpfc_sli_intr_handler - Device-level interrupt handler to SLI-3 device
  * @irq: Interrupt number.
  * @dev_id: The device context pointer.
  *
- * This function is the device-level interrupt handler called from the PCI
- * layer when either MSI or Pin-IRQ interrupt mode is enabled and there is
- * an event in the HBA which requires driver attention. This function
- * invokes the slow-path interrupt attention handling function and fast-path
- * interrupt attention handling function in turn to process the relevant
- * HBA attention events. This function is called without any lock held. It
- * gets the hbalock to access and update SLI data structures.
+ * This function is the HBA device-level interrupt handler to device with
+ * SLI-3 interface spec, called from the PCI layer when either MSI or
+ * Pin-IRQ interrupt mode is enabled and there is an event in the HBA which
+ * requires driver attention. This function invokes the slow-path interrupt
+ * attention handling function and fast-path interrupt attention handling
+ * function in turn to process the relevant HBA attention events. This
+ * function is called without any lock held. It gets the hbalock to access
+ * and update SLI data structures.
  *
  * This function returns IRQ_HANDLED when interrupt is handled, else it
  * returns IRQ_NONE.
  **/
 irqreturn_t
-lpfc_intr_handler(int irq, void *dev_id)
+lpfc_sli_intr_handler(int irq, void *dev_id)
 {
         struct lpfc_hba  *phba;
         irqreturn_t sp_irq_rc, fp_irq_rc;
@@ -5600,15 +8193,8 @@ lpfc_intr_handler(int irq, void *dev_id)
         if (unlikely(!phba))
                 return IRQ_NONE;
 
-        /* If the pci channel is offline, ignore all the interrupts. */
-        if (unlikely(pci_channel_offline(phba->pcidev)))
-                return IRQ_NONE;
-
-        /* Update device level interrupt statistics */
-        phba->sli.slistat.sli_intr++;
-
-        /* Ignore all interrupts during initialization. */
-        if (unlikely(phba->link_state < LPFC_LINK_DOWN))
+        /* Check device state for handling interrupt */
+        if (lpfc_intr_state_check(phba))
                 return IRQ_NONE;
 
         spin_lock(&phba->hbalock);
@@ -5650,7 +8236,7 @@ lpfc_intr_handler(int irq, void *dev_id)
         status2 >>= (4*LPFC_ELS_RING);
 
         if (status1 || (status2 & HA_RXMASK))
-                sp_irq_rc = lpfc_sp_intr_handler(irq, dev_id);
+                sp_irq_rc = lpfc_sli_sp_intr_handler(irq, dev_id);
         else
                 sp_irq_rc = IRQ_NONE;
 
@@ -5670,10 +8256,3321 @@ lpfc_intr_handler(int irq, void *dev_id)
                 status2 = 0;
 
         if ((status1 & HA_RXMASK) || (status2 & HA_RXMASK))
-                fp_irq_rc = lpfc_fp_intr_handler(irq, dev_id);
+                fp_irq_rc = lpfc_sli_fp_intr_handler(irq, dev_id);
         else
                 fp_irq_rc = IRQ_NONE;
 
         /* Return device-level interrupt handling status */
         return (sp_irq_rc == IRQ_HANDLED) ? sp_irq_rc : fp_irq_rc;
-}  /* lpfc_intr_handler */
+}  /* lpfc_sli_intr_handler */
+
+/**
+ * lpfc_sli4_fcp_xri_abort_event_proc - Process fcp xri abort event
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is invoked by the worker thread to process all the pending
+ * SLI4 FCP abort XRI events.
+ **/
+void lpfc_sli4_fcp_xri_abort_event_proc(struct lpfc_hba *phba)
+{
+        struct lpfc_cq_event *cq_event;
+
+        /* First, declare the fcp xri abort event has been handled */
+        spin_lock_irq(&phba->hbalock);
+        phba->hba_flag &= ~FCP_XRI_ABORT_EVENT;
+        spin_unlock_irq(&phba->hbalock);
+        /* Now, handle all the fcp xri abort events */
+        while (!list_empty(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue)) {
+                /* Get the first event from the head of the event queue */
+                spin_lock_irq(&phba->hbalock);
+                list_remove_head(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue,
+                                 cq_event, struct lpfc_cq_event, list);
+                spin_unlock_irq(&phba->hbalock);
+                /* Notify aborted XRI for FCP work queue */
+                lpfc_sli4_fcp_xri_aborted(phba, &cq_event->cqe.wcqe_axri);
+                /* Free the event processed back to the free pool */
+                lpfc_sli4_cq_event_release(phba, cq_event);
+        }
+}
+
+/**
+ * lpfc_sli4_els_xri_abort_event_proc - Process els xri abort event
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is invoked by the worker thread to process all the pending
+ * SLI4 els abort xri events.
+ **/
+void lpfc_sli4_els_xri_abort_event_proc(struct lpfc_hba *phba)
+{
+        struct lpfc_cq_event *cq_event;
+
+        /* First, declare the els xri abort event has been handled */
+        spin_lock_irq(&phba->hbalock);
+        phba->hba_flag &= ~ELS_XRI_ABORT_EVENT;
+        spin_unlock_irq(&phba->hbalock);
+        /* Now, handle all the els xri abort events */
+        while (!list_empty(&phba->sli4_hba.sp_els_xri_aborted_work_queue)) {
+                /* Get the first event from the head of the event queue */
+                spin_lock_irq(&phba->hbalock);
+                list_remove_head(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
+                                 cq_event, struct lpfc_cq_event, list);
+                spin_unlock_irq(&phba->hbalock);
+                /* Notify aborted XRI for ELS work queue */
+                lpfc_sli4_els_xri_aborted(phba, &cq_event->cqe.wcqe_axri);
+                /* Free the event processed back to the free pool */
+                lpfc_sli4_cq_event_release(phba, cq_event);
+        }
+}
+
+static void
+lpfc_sli4_iocb_param_transfer(struct lpfc_iocbq *pIocbIn,
+                              struct lpfc_iocbq *pIocbOut,
+                              struct lpfc_wcqe_complete *wcqe)
+{
+        size_t offset = offsetof(struct lpfc_iocbq, iocb);
+
+        memcpy((char *)pIocbIn + offset, (char *)pIocbOut + offset,
+               sizeof(struct lpfc_iocbq) - offset);
+        memset(&pIocbIn->sli4_info, 0,
+               sizeof(struct lpfc_sli4_rspiocb_info));
+        /* Map WCQE parameters into irspiocb parameters */
+        pIocbIn->iocb.ulpStatus = bf_get(lpfc_wcqe_c_status, wcqe);
+        if (pIocbOut->iocb_flag & LPFC_IO_FCP)
+                if (pIocbIn->iocb.ulpStatus == IOSTAT_FCP_RSP_ERROR)
+                        pIocbIn->iocb.un.fcpi.fcpi_parm =
+                                        pIocbOut->iocb.un.fcpi.fcpi_parm -
+                                        wcqe->total_data_placed;
+                else
+                        pIocbIn->iocb.un.ulpWord[4] = wcqe->parameter;
+        else
+                pIocbIn->iocb.un.ulpWord[4] = wcqe->parameter;
+        /* Load in additional WCQE parameters */
+        pIocbIn->sli4_info.hw_status = bf_get(lpfc_wcqe_c_hw_status, wcqe);
+        pIocbIn->sli4_info.bfield = 0;
+        if (bf_get(lpfc_wcqe_c_xb, wcqe))
+                pIocbIn->sli4_info.bfield |= LPFC_XB;
+        if (bf_get(lpfc_wcqe_c_pv, wcqe)) {
+                pIocbIn->sli4_info.bfield |= LPFC_PV;
+                pIocbIn->sli4_info.priority =
+                                        bf_get(lpfc_wcqe_c_priority, wcqe);
+        }
+}
+
+/**
+ * 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.
+ *
+ * This routine handles an ELS work-queue completion event.
+ *
+ * Return: true if work posted to worker thread, otherwise false.
+ **/
+static bool
+lpfc_sli4_sp_handle_els_wcqe(struct lpfc_hba *phba,
+                             struct lpfc_wcqe_complete *wcqe)
+{
+        struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
+        struct lpfc_iocbq *cmdiocbq;
+        struct lpfc_iocbq *irspiocbq;
+        unsigned long iflags;
+        bool workposted = false;
+
+        spin_lock_irqsave(&phba->hbalock, iflags);
+        pring->stats.iocb_event++;
+        /* Look up the ELS command IOCB and create pseudo response IOCB */
+        cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring,
+                                bf_get(lpfc_wcqe_c_request_tag, wcqe));
+        spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+        if (unlikely(!cmdiocbq)) {
+                lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+                                "0386 ELS complete with no corresponding "
+                                "cmdiocb: iotag (%d)\n",
+                                bf_get(lpfc_wcqe_c_request_tag, wcqe));
+                return workposted;
+        }
+
+        /* Fake the irspiocbq and copy necessary response information */
+        irspiocbq = lpfc_sli_get_iocbq(phba);
+        if (!irspiocbq) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "0387 Failed to allocate an iocbq\n");
+                return workposted;
+        }
+        lpfc_sli4_iocb_param_transfer(irspiocbq, cmdiocbq, wcqe);
+
+        /* Add the irspiocb to the response IOCB work list */
+        spin_lock_irqsave(&phba->hbalock, iflags);
+        list_add_tail(&irspiocbq->list, &phba->sli4_hba.sp_rspiocb_work_queue);
+        /* Indicate ELS ring attention */
+        phba->work_ha |= (HA_R0ATT << (4*LPFC_ELS_RING));
+        spin_unlock_irqrestore(&phba->hbalock, iflags);
+        workposted = true;
+
+        return workposted;
+}
+
+/**
+ * lpfc_sli4_sp_handle_rel_wcqe - Handle slow-path WQ entry consumed event
+ * @phba: Pointer to HBA context object.
+ * @wcqe: Pointer to work-queue completion queue entry.
+ *
+ * This routine handles slow-path WQ entry comsumed event by invoking the
+ * proper WQ release routine to the slow-path WQ.
+ **/
+static void
+lpfc_sli4_sp_handle_rel_wcqe(struct lpfc_hba *phba,
+                             struct lpfc_wcqe_release *wcqe)
+{
+        /* Check for the slow-path ELS work queue */
+        if (bf_get(lpfc_wcqe_r_wq_id, wcqe) == phba->sli4_hba.els_wq->queue_id)
+                lpfc_sli4_wq_release(phba->sli4_hba.els_wq,
+                                     bf_get(lpfc_wcqe_r_wqe_index, wcqe));
+        else
+                lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+                                "2579 Slow-path wqe consume event carries "
+                                "miss-matched qid: wcqe-qid=x%x, sp-qid=x%x\n",
+                                bf_get(lpfc_wcqe_r_wqe_index, wcqe),
+                                phba->sli4_hba.els_wq->queue_id);
+}
+
+/**
+ * lpfc_sli4_sp_handle_abort_xri_wcqe - Handle a xri abort event
+ * @phba: Pointer to HBA context object.
+ * @cq: Pointer to a WQ completion queue.
+ * @wcqe: Pointer to work-queue completion queue entry.
+ *
+ * This routine handles an XRI abort event.
+ *
+ * Return: true if work posted to worker thread, otherwise false.
+ **/
+static bool
+lpfc_sli4_sp_handle_abort_xri_wcqe(struct lpfc_hba *phba,
+                                   struct lpfc_queue *cq,
+                                   struct sli4_wcqe_xri_aborted *wcqe)
+{
+        bool workposted = false;
+        struct lpfc_cq_event *cq_event;
+        unsigned long iflags;
+
+        /* 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,
+                                "0602 Failed to allocate CQ_EVENT entry\n");
+                return false;
+        }
+
+        /* Move the CQE into the proper xri abort event list */
+        memcpy(&cq_event->cqe, wcqe, sizeof(struct sli4_wcqe_xri_aborted));
+        switch (cq->subtype) {
+        case LPFC_FCP:
+                spin_lock_irqsave(&phba->hbalock, iflags);
+                list_add_tail(&cq_event->list,
+                              &phba->sli4_hba.sp_fcp_xri_aborted_work_queue);
+                /* Set the fcp xri abort event flag */
+                phba->hba_flag |= FCP_XRI_ABORT_EVENT;
+                spin_unlock_irqrestore(&phba->hbalock, iflags);
+                workposted = true;
+                break;
+        case LPFC_ELS:
+                spin_lock_irqsave(&phba->hbalock, iflags);
+                list_add_tail(&cq_event->list,
+                              &phba->sli4_hba.sp_els_xri_aborted_work_queue);
+                /* Set the els xri abort event flag */
+                phba->hba_flag |= ELS_XRI_ABORT_EVENT;
+                spin_unlock_irqrestore(&phba->hbalock, iflags);
+                workposted = true;
+                break;
+        default:
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "0603 Invalid work queue CQE subtype (x%x)\n",
+                                cq->subtype);
+                workposted = false;
+                break;
+        }
+        return workposted;
+}
+
+/**
+ * lpfc_sli4_sp_handle_wcqe - Process a work-queue completion queue entry
+ * @phba: Pointer to HBA context object.
+ * @cq: Pointer to the completion queue.
+ * @wcqe: Pointer to a completion queue entry.
+ *
+ * This routine process a slow-path work-queue completion queue entry.
+ *
+ * Return: true if work posted to worker thread, otherwise false.
+ **/
+static bool
+lpfc_sli4_sp_handle_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
+                         struct lpfc_cqe *cqe)
+{
+        struct lpfc_wcqe_complete wcqe;
+        bool workposted = false;
+
+        /* Copy the work queue CQE and convert endian order if needed */
+        lpfc_sli_pcimem_bcopy(cqe, &wcqe, sizeof(struct lpfc_cqe));
+
+        /* Check and process for different type of WCQE and dispatch */
+        switch (bf_get(lpfc_wcqe_c_code, &wcqe)) {
+        case CQE_CODE_COMPL_WQE:
+                /* Process the WQ complete event */
+                workposted = lpfc_sli4_sp_handle_els_wcqe(phba,
+                                        (struct lpfc_wcqe_complete *)&wcqe);
+                break;
+        case CQE_CODE_RELEASE_WQE:
+                /* Process the WQ release event */
+                lpfc_sli4_sp_handle_rel_wcqe(phba,
+                                        (struct lpfc_wcqe_release *)&wcqe);
+                break;
+        case CQE_CODE_XRI_ABORTED:
+                /* Process the WQ XRI abort event */
+                workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq,
+                                        (struct sli4_wcqe_xri_aborted *)&wcqe);
+                break;
+        default:
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "0388 Not a valid WCQE code: x%x\n",
+                                bf_get(lpfc_wcqe_c_code, &wcqe));
+                break;
+        }
+        return workposted;
+}
+
+/**
+ * lpfc_sli4_sp_handle_rcqe - Process a receive-queue completion queue entry
+ * @phba: Pointer to HBA context object.
+ * @rcqe: Pointer to receive-queue completion queue entry.
+ *
+ * This routine process a receive-queue completion queue entry.
+ *
+ * Return: true if work posted to worker thread, otherwise false.
+ **/
+static bool
+lpfc_sli4_sp_handle_rcqe(struct lpfc_hba *phba, struct lpfc_cqe *cqe)
+{
+        struct lpfc_rcqe rcqe;
+        bool workposted = false;
+        struct lpfc_queue *hrq = phba->sli4_hba.hdr_rq;
+        struct lpfc_queue *drq = phba->sli4_hba.dat_rq;
+        struct hbq_dmabuf *dma_buf;
+        uint32_t status;
+        unsigned long iflags;
+
+        /* Copy the receive queue CQE and convert endian order if needed */
+        lpfc_sli_pcimem_bcopy(cqe, &rcqe, sizeof(struct lpfc_rcqe));
+        lpfc_sli4_rq_release(hrq, drq);
+        if (bf_get(lpfc_rcqe_code, &rcqe) != CQE_CODE_RECEIVE)
+                goto out;
+        if (bf_get(lpfc_rcqe_rq_id, &rcqe) != hrq->queue_id)
+                goto out;
+
+        status = bf_get(lpfc_rcqe_status, &rcqe);
+        switch (status) {
+        case FC_STATUS_RQ_BUF_LEN_EXCEEDED:
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "2537 Receive Frame Truncated!!\n");
+        case FC_STATUS_RQ_SUCCESS:
+                spin_lock_irqsave(&phba->hbalock, iflags);
+                dma_buf = lpfc_sli_hbqbuf_get(&phba->hbqs[0].hbq_buffer_list);
+                if (!dma_buf) {
+                        spin_unlock_irqrestore(&phba->hbalock, iflags);
+                        goto out;
+                }
+                memcpy(&dma_buf->rcqe, &rcqe, sizeof(rcqe));
+                /* save off the frame for the word thread to process */
+                list_add_tail(&dma_buf->dbuf.list, &phba->rb_pend_list);
+                /* Frame received */
+                phba->hba_flag |= HBA_RECEIVE_BUFFER;
+                spin_unlock_irqrestore(&phba->hbalock, iflags);
+                workposted = true;
+                break;
+        case FC_STATUS_INSUFF_BUF_NEED_BUF:
+        case FC_STATUS_INSUFF_BUF_FRM_DISC:
+                /* Post more buffers if possible */
+                spin_lock_irqsave(&phba->hbalock, iflags);
+                phba->hba_flag |= HBA_POST_RECEIVE_BUFFER;
+                spin_unlock_irqrestore(&phba->hbalock, iflags);
+                workposted = true;
+                break;
+        }
+out:
+        return workposted;
+
+}
+
+/**
+ * lpfc_sli4_sp_handle_eqe - Process a slow-path event queue entry
+ * @phba: Pointer to HBA context object.
+ * @eqe: Pointer to fast-path event queue entry.
+ *
+ * This routine process a event queue entry from the slow-path event queue.
+ * It will check the MajorCode and MinorCode to determine this is for a
+ * completion event on a completion queue, if not, an error shall be logged
+ * and just return. Otherwise, it will get to the corresponding completion
+ * queue and process all the entries on that completion queue, rearm the
+ * completion queue, and then return.
+ *
+ **/
+static void
+lpfc_sli4_sp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe)
+{
+        struct lpfc_queue *cq = NULL, *childq, *speq;
+        struct lpfc_cqe *cqe;
+        bool workposted = false;
+        int ecount = 0;
+        uint16_t cqid;
+
+        if (bf_get(lpfc_eqe_major_code, eqe) != 0 ||
+            bf_get(lpfc_eqe_minor_code, eqe) != 0) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "0359 Not a valid slow-path completion "
+                                "event: majorcode=x%x, minorcode=x%x\n",
+                                bf_get(lpfc_eqe_major_code, eqe),
+                                bf_get(lpfc_eqe_minor_code, eqe));
+                return;
+        }
+
+        /* Get the reference to the corresponding CQ */
+        cqid = bf_get(lpfc_eqe_resource_id, eqe);
+
+        /* Search for completion queue pointer matching this cqid */
+        speq = phba->sli4_hba.sp_eq;
+        list_for_each_entry(childq, &speq->child_list, list) {
+                if (childq->queue_id == cqid) {
+                        cq = childq;
+                        break;
+                }
+        }
+        if (unlikely(!cq)) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "0365 Slow-path CQ identifier (%d) does "
+                                "not exist\n", cqid);
+                return;
+        }
+
+        /* Process all the entries to the CQ */
+        switch (cq->type) {
+        case LPFC_MCQ:
+                while ((cqe = lpfc_sli4_cq_get(cq))) {
+                        workposted |= lpfc_sli4_sp_handle_mcqe(phba, cqe);
+                        if (!(++ecount % LPFC_GET_QE_REL_INT))
+                                lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
+                }
+                break;
+        case LPFC_WCQ:
+                while ((cqe = lpfc_sli4_cq_get(cq))) {
+                        workposted |= lpfc_sli4_sp_handle_wcqe(phba, cq, cqe);
+                        if (!(++ecount % LPFC_GET_QE_REL_INT))
+                                lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
+                }
+                break;
+        case LPFC_RCQ:
+                while ((cqe = lpfc_sli4_cq_get(cq))) {
+                        workposted |= lpfc_sli4_sp_handle_rcqe(phba, cqe);
+                        if (!(++ecount % LPFC_GET_QE_REL_INT))
+                                lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
+                }
+                break;
+        default:
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "0370 Invalid completion queue type (%d)\n",
+                                cq->type);
+                return;
+        }
+
+        /* Catch the no cq entry condition, log an error */
+        if (unlikely(ecount == 0))
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "0371 No entry from the CQ: identifier "
+                                "(x%x), type (%d)\n", cq->queue_id, cq->type);
+
+        /* In any case, flash and re-arm the RCQ */
+        lpfc_sli4_cq_release(cq, LPFC_QUEUE_REARM);
+
+        /* wake up worker thread if there are works to be done */
+        if (workposted)
+                lpfc_worker_wake_up(phba);
+}
+
+/**
+ * lpfc_sli4_fp_handle_fcp_wcqe - Process fast-path work queue completion entry
+ * @eqe: Pointer to fast-path completion queue entry.
+ *
+ * This routine process a fast-path work queue completion entry from fast-path
+ * event queue for FCP command response completion.
+ **/
+static void
+lpfc_sli4_fp_handle_fcp_wcqe(struct lpfc_hba *phba,
+                             struct lpfc_wcqe_complete *wcqe)
+{
+        struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_FCP_RING];
+        struct lpfc_iocbq *cmdiocbq;
+        struct lpfc_iocbq irspiocbq;
+        unsigned long iflags;
+
+        spin_lock_irqsave(&phba->hbalock, iflags);
+        pring->stats.iocb_event++;
+        spin_unlock_irqrestore(&phba->hbalock, iflags);
+
+        /* Check for response status */
+        if (unlikely(bf_get(lpfc_wcqe_c_status, wcqe))) {
+                /* If resource errors reported from HBA, reduce queue
+                 * depth of the SCSI device.
+                 */
+                if ((bf_get(lpfc_wcqe_c_status, wcqe) ==
+                     IOSTAT_LOCAL_REJECT) &&
+                    (wcqe->parameter == IOERR_NO_RESOURCES)) {
+                        phba->lpfc_rampdown_queue_depth(phba);
+                }
+                /* Log the error status */
+                lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+                                "0373 FCP complete error: status=x%x, "
+                                "hw_status=x%x, total_data_specified=%d, "
+                                "parameter=x%x, word3=x%x\n",
+                                bf_get(lpfc_wcqe_c_status, wcqe),
+                                bf_get(lpfc_wcqe_c_hw_status, wcqe),
+                                wcqe->total_data_placed, wcqe->parameter,
+                                wcqe->word3);
+        }
+
+        /* Look up the FCP command IOCB and create pseudo response IOCB */
+        spin_lock_irqsave(&phba->hbalock, iflags);
+        cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring,
+                                bf_get(lpfc_wcqe_c_request_tag, wcqe));
+        spin_unlock_irqrestore(&phba->hbalock, iflags);
+        if (unlikely(!cmdiocbq)) {
+                lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+                                "0374 FCP complete with no corresponding "
+                                "cmdiocb: iotag (%d)\n",
+                                bf_get(lpfc_wcqe_c_request_tag, wcqe));
+                return;
+        }
+        if (unlikely(!cmdiocbq->iocb_cmpl)) {
+                lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+                                "0375 FCP cmdiocb not callback function "
+                                "iotag: (%d)\n",
+                                bf_get(lpfc_wcqe_c_request_tag, wcqe));
+                return;
+        }
+
+        /* Fake the irspiocb and copy necessary response information */
+        lpfc_sli4_iocb_param_transfer(&irspiocbq, cmdiocbq, wcqe);
+
+        /* Pass the cmd_iocb and the rsp state to the upper layer */
+        (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, &irspiocbq);
+}
+
+/**
+ * lpfc_sli4_fp_handle_rel_wcqe - Handle fast-path WQ entry consumed event
+ * @phba: Pointer to HBA context object.
+ * @cq: Pointer to completion queue.
+ * @wcqe: Pointer to work-queue completion queue entry.
+ *
+ * This routine handles an fast-path WQ entry comsumed event by invoking the
+ * proper WQ release routine to the slow-path WQ.
+ **/
+static void
+lpfc_sli4_fp_handle_rel_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
+                             struct lpfc_wcqe_release *wcqe)
+{
+        struct lpfc_queue *childwq;
+        bool wqid_matched = false;
+        uint16_t fcp_wqid;
+
+        /* Check for fast-path FCP work queue release */
+        fcp_wqid = bf_get(lpfc_wcqe_r_wq_id, wcqe);
+        list_for_each_entry(childwq, &cq->child_list, list) {
+                if (childwq->queue_id == fcp_wqid) {
+                        lpfc_sli4_wq_release(childwq,
+                                        bf_get(lpfc_wcqe_r_wqe_index, wcqe));
+                        wqid_matched = true;
+                        break;
+                }
+        }
+        /* Report warning log message if no match found */
+        if (wqid_matched != true)
+                lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+                                "2580 Fast-path wqe consume event carries "
+                                "miss-matched qid: wcqe-qid=x%x\n", fcp_wqid);
+}
+
+/**
+ * lpfc_sli4_fp_handle_wcqe - Process fast-path work queue completion entry
+ * @cq: Pointer to the completion queue.
+ * @eqe: Pointer to fast-path completion queue entry.
+ *
+ * This routine process a fast-path work queue completion entry from fast-path
+ * event queue for FCP command response completion.
+ **/
+static int
+lpfc_sli4_fp_handle_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
+                         struct lpfc_cqe *cqe)
+{
+        struct lpfc_wcqe_release wcqe;
+        bool workposted = false;
+
+        /* Copy the work queue CQE and convert endian order if needed */
+        lpfc_sli_pcimem_bcopy(cqe, &wcqe, sizeof(struct lpfc_cqe));
+
+        /* Check and process for different type of WCQE and dispatch */
+        switch (bf_get(lpfc_wcqe_c_code, &wcqe)) {
+        case CQE_CODE_COMPL_WQE:
+                /* Process the WQ complete event */
+                lpfc_sli4_fp_handle_fcp_wcqe(phba,
+                                (struct lpfc_wcqe_complete *)&wcqe);
+                break;
+        case CQE_CODE_RELEASE_WQE:
+                /* Process the WQ release event */
+                lpfc_sli4_fp_handle_rel_wcqe(phba, cq,
+                                (struct lpfc_wcqe_release *)&wcqe);
+                break;
+        case CQE_CODE_XRI_ABORTED:
+                /* Process the WQ XRI abort event */
+                workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq,
+                                (struct sli4_wcqe_xri_aborted *)&wcqe);
+                break;
+        default:
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "0144 Not a valid WCQE code: x%x\n",
+                                bf_get(lpfc_wcqe_c_code, &wcqe));
+                break;
+        }
+        return workposted;
+}
+
+/**
+ * lpfc_sli4_fp_handle_eqe - Process a fast-path event queue entry
+ * @phba: Pointer to HBA context object.
+ * @eqe: Pointer to fast-path event queue entry.
+ *
+ * This routine process a event queue entry from the fast-path event queue.
+ * It will check the MajorCode and MinorCode to determine this is for a
+ * completion event on a completion queue, if not, an error shall be logged
+ * and just return. Otherwise, it will get to the corresponding completion
+ * queue and process all the entries on the completion queue, rearm the
+ * completion queue, and then return.
+ **/
+static void
+lpfc_sli4_fp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe,
+                        uint32_t fcp_cqidx)
+{
+        struct lpfc_queue *cq;
+        struct lpfc_cqe *cqe;
+        bool workposted = false;
+        uint16_t cqid;
+        int ecount = 0;
+
+        if (unlikely(bf_get(lpfc_eqe_major_code, eqe) != 0) ||
+            unlikely(bf_get(lpfc_eqe_minor_code, eqe) != 0)) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "0366 Not a valid fast-path completion "
+                                "event: majorcode=x%x, minorcode=x%x\n",
+                                bf_get(lpfc_eqe_major_code, eqe),
+                                bf_get(lpfc_eqe_minor_code, eqe));
+                return;
+        }
+
+        cq = phba->sli4_hba.fcp_cq[fcp_cqidx];
+        if (unlikely(!cq)) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "0367 Fast-path completion queue does not "
+                                "exist\n");
+                return;
+        }
+
+        /* Get the reference to the corresponding CQ */
+        cqid = bf_get(lpfc_eqe_resource_id, eqe);
+        if (unlikely(cqid != cq->queue_id)) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "0368 Miss-matched fast-path completion "
+                                "queue identifier: eqcqid=%d, fcpcqid=%d\n",
+                                cqid, cq->queue_id);
+                return;
+        }
+
+        /* Process all the entries to the CQ */
+        while ((cqe = lpfc_sli4_cq_get(cq))) {
+                workposted |= lpfc_sli4_fp_handle_wcqe(phba, cq, cqe);
+                if (!(++ecount % LPFC_GET_QE_REL_INT))
+                        lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
+        }
+
+        /* Catch the no cq entry condition */
+        if (unlikely(ecount == 0))
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "0369 No entry from fast-path completion "
+                                "queue fcpcqid=%d\n", cq->queue_id);
+
+        /* In any case, flash and re-arm the CQ */
+        lpfc_sli4_cq_release(cq, LPFC_QUEUE_REARM);
+
+        /* wake up worker thread if there are works to be done */
+        if (workposted)
+                lpfc_worker_wake_up(phba);
+}
+
+static void
+lpfc_sli4_eq_flush(struct lpfc_hba *phba, struct lpfc_queue *eq)
+{
+        struct lpfc_eqe *eqe;
+
+        /* walk all the EQ entries and drop on the floor */
+        while ((eqe = lpfc_sli4_eq_get(eq)))
+                ;
+
+        /* Clear and re-arm the EQ */
+        lpfc_sli4_eq_release(eq, LPFC_QUEUE_REARM);
+}
+
+/**
+ * lpfc_sli4_sp_intr_handler - Slow-path interrupt handler to SLI-4 device
+ * @irq: Interrupt number.
+ * @dev_id: The device context pointer.
+ *
+ * This function is directly called from the PCI layer as an interrupt
+ * service routine when device with SLI-4 interface spec is enabled with
+ * MSI-X multi-message interrupt mode and there are slow-path events in
+ * the HBA. However, when the device is enabled with either MSI or Pin-IRQ
+ * interrupt mode, this function is called as part of the device-level
+ * interrupt handler. When the PCI slot is in error recovery or the HBA is
+ * undergoing initialization, the interrupt handler will not process the
+ * interrupt. The link attention and ELS ring attention events are handled
+ * by the worker thread. The interrupt handler signals the worker thread
+ * and returns for these events. This function is called without any lock
+ * held. It gets the hbalock to access and update SLI data structures.
+ *
+ * This function returns IRQ_HANDLED when interrupt is handled else it
+ * returns IRQ_NONE.
+ **/
+irqreturn_t
+lpfc_sli4_sp_intr_handler(int irq, void *dev_id)
+{
+        struct lpfc_hba *phba;
+        struct lpfc_queue *speq;
+        struct lpfc_eqe *eqe;
+        unsigned long iflag;
+        int ecount = 0;
+
+        /*
+         * Get the driver's phba structure from the dev_id
+         */
+        phba = (struct lpfc_hba *)dev_id;
+
+        if (unlikely(!phba))
+                return IRQ_NONE;
+
+        /* Get to the EQ struct associated with this vector */
+        speq = phba->sli4_hba.sp_eq;
+
+        /* Check device state for handling interrupt */
+        if (unlikely(lpfc_intr_state_check(phba))) {
+                /* Check again for link_state with lock held */
+                spin_lock_irqsave(&phba->hbalock, iflag);
+                if (phba->link_state < LPFC_LINK_DOWN)
+                        /* Flush, clear interrupt, and rearm the EQ */
+                        lpfc_sli4_eq_flush(phba, speq);
+                spin_unlock_irqrestore(&phba->hbalock, iflag);
+                return IRQ_NONE;
+        }
+
+        /*
+         * Process all the event on FCP slow-path EQ
+         */
+        while ((eqe = lpfc_sli4_eq_get(speq))) {
+                lpfc_sli4_sp_handle_eqe(phba, eqe);
+                if (!(++ecount % LPFC_GET_QE_REL_INT))
+                        lpfc_sli4_eq_release(speq, LPFC_QUEUE_NOARM);
+        }
+
+        /* Always clear and re-arm the slow-path EQ */
+        lpfc_sli4_eq_release(speq, LPFC_QUEUE_REARM);
+
+        /* Catch the no cq entry condition */
+        if (unlikely(ecount == 0)) {
+                if (phba->intr_type == MSIX)
+                        /* MSI-X treated interrupt served as no EQ share INT */
+                        lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+                                        "0357 MSI-X interrupt with no EQE\n");
+                else
+                        /* Non MSI-X treated on interrupt as EQ share INT */
+                        return IRQ_NONE;
+        }
+
+        return IRQ_HANDLED;
+} /* lpfc_sli4_sp_intr_handler */
+
+/**
+ * lpfc_sli4_fp_intr_handler - Fast-path interrupt handler to SLI-4 device
+ * @irq: Interrupt number.
+ * @dev_id: The device context pointer.
+ *
+ * This function is directly called from the PCI layer as an interrupt
+ * service routine when device with SLI-4 interface spec is enabled with
+ * MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB
+ * ring event in the HBA. However, when the device is enabled with either
+ * MSI or Pin-IRQ interrupt mode, this function is called as part of the
+ * device-level interrupt handler. When the PCI slot is in error recovery
+ * or the HBA is undergoing initialization, the interrupt handler will not
+ * process the interrupt. The SCSI FCP fast-path ring event are handled in
+ * the intrrupt context. This function is called without any lock held.
+ * It gets the hbalock to access and update SLI data structures. Note that,
+ * the FCP EQ to FCP CQ are one-to-one map such that the FCP EQ index is
+ * equal to that of FCP CQ index.
+ *
+ * This function returns IRQ_HANDLED when interrupt is handled else it
+ * returns IRQ_NONE.
+ **/
+irqreturn_t
+lpfc_sli4_fp_intr_handler(int irq, void *dev_id)
+{
+        struct lpfc_hba *phba;
+        struct lpfc_fcp_eq_hdl *fcp_eq_hdl;
+        struct lpfc_queue *fpeq;
+        struct lpfc_eqe *eqe;
+        unsigned long iflag;
+        int ecount = 0;
+        uint32_t fcp_eqidx;
+
+        /* Get the driver's phba structure from the dev_id */
+        fcp_eq_hdl = (struct lpfc_fcp_eq_hdl *)dev_id;
+        phba = fcp_eq_hdl->phba;
+        fcp_eqidx = fcp_eq_hdl->idx;
+
+        if (unlikely(!phba))
+                return IRQ_NONE;
+
+        /* Get to the EQ struct associated with this vector */
+        fpeq = phba->sli4_hba.fp_eq[fcp_eqidx];
+
+        /* Check device state for handling interrupt */
+        if (unlikely(lpfc_intr_state_check(phba))) {
+                /* Check again for link_state with lock held */
+                spin_lock_irqsave(&phba->hbalock, iflag);
+                if (phba->link_state < LPFC_LINK_DOWN)
+                        /* Flush, clear interrupt, and rearm the EQ */
+                        lpfc_sli4_eq_flush(phba, fpeq);
+                spin_unlock_irqrestore(&phba->hbalock, iflag);
+                return IRQ_NONE;
+        }
+
+        /*
+         * Process all the event on FCP fast-path EQ
+         */
+        while ((eqe = lpfc_sli4_eq_get(fpeq))) {
+                lpfc_sli4_fp_handle_eqe(phba, eqe, fcp_eqidx);
+                if (!(++ecount % LPFC_GET_QE_REL_INT))
+                        lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_NOARM);
+        }
+
+        /* Always clear and re-arm the fast-path EQ */
+        lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_REARM);
+
+        if (unlikely(ecount == 0)) {
+                if (phba->intr_type == MSIX)
+                        /* MSI-X treated interrupt served as no EQ share INT */
+                        lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+                                        "0358 MSI-X interrupt with no EQE\n");
+                else
+                        /* Non MSI-X treated on interrupt as EQ share INT */
+                        return IRQ_NONE;
+        }
+
+        return IRQ_HANDLED;
+} /* lpfc_sli4_fp_intr_handler */
+
+/**
+ * lpfc_sli4_intr_handler - Device-level interrupt handler for SLI-4 device
+ * @irq: Interrupt number.
+ * @dev_id: The device context pointer.
+ *
+ * This function is the device-level interrupt handler to device with SLI-4
+ * interface spec, called from the PCI layer when either MSI or Pin-IRQ
+ * interrupt mode is enabled and there is an event in the HBA which requires
+ * driver attention. This function invokes the slow-path interrupt attention
+ * handling function and fast-path interrupt attention handling function in
+ * turn to process the relevant HBA attention events. This function is called
+ * without any lock held. It gets the hbalock to access and update SLI data
+ * structures.
+ *
+ * This function returns IRQ_HANDLED when interrupt is handled, else it
+ * returns IRQ_NONE.
+ **/
+irqreturn_t
+lpfc_sli4_intr_handler(int irq, void *dev_id)
+{
+        struct lpfc_hba  *phba;
+        irqreturn_t sp_irq_rc, fp_irq_rc;
+        bool fp_handled = false;
+        uint32_t fcp_eqidx;
+
+        /* Get the driver's phba structure from the dev_id */
+        phba = (struct lpfc_hba *)dev_id;
+
+        if (unlikely(!phba))
+                return IRQ_NONE;
+
+        /*
+         * Invokes slow-path host attention interrupt handling as appropriate.
+         */
+        sp_irq_rc = lpfc_sli4_sp_intr_handler(irq, dev_id);
+
+        /*
+         * Invoke fast-path host attention interrupt handling as appropriate.
+         */
+        for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) {
+                fp_irq_rc = lpfc_sli4_fp_intr_handler(irq,
+                                        &phba->sli4_hba.fcp_eq_hdl[fcp_eqidx]);
+                if (fp_irq_rc == IRQ_HANDLED)
+                        fp_handled |= true;
+        }
+
+        return (fp_handled == true) ? IRQ_HANDLED : sp_irq_rc;
+} /* lpfc_sli4_intr_handler */
+
+/**
+ * lpfc_sli4_queue_free - free a queue structure and associated memory
+ * @queue: The queue structure to free.
+ *
+ * This function frees a queue structure and the DMAable memeory used for
+ * the host resident queue. This function must be called after destroying the
+ * queue on the HBA.
+ **/
+void
+lpfc_sli4_queue_free(struct lpfc_queue *queue)
+{
+        struct lpfc_dmabuf *dmabuf;
+
+        if (!queue)
+                return;
+
+        while (!list_empty(&queue->page_list)) {
+                list_remove_head(&queue->page_list, dmabuf, struct lpfc_dmabuf,
+                                 list);
+                dma_free_coherent(&queue->phba->pcidev->dev, PAGE_SIZE,
+                                  dmabuf->virt, dmabuf->phys);
+                kfree(dmabuf);
+        }
+        kfree(queue);
+        return;
+}
+
+/**
+ * lpfc_sli4_queue_alloc - Allocate and initialize a queue structure
+ * @phba: The HBA that this queue is being created on.
+ * @entry_size: The size of each queue entry for this queue.
+ * @entry count: The number of entries that this queue will handle.
+ *
+ * This function allocates a queue structure and the DMAable memory used for
+ * the host resident queue. This function must be called before creating the
+ * queue on the HBA.
+ **/
+struct lpfc_queue *
+lpfc_sli4_queue_alloc(struct lpfc_hba *phba, uint32_t entry_size,
+                      uint32_t entry_count)
+{
+        struct lpfc_queue *queue;
+        struct lpfc_dmabuf *dmabuf;
+        int x, total_qe_count;
+        void *dma_pointer;
+
+
+        queue = kzalloc(sizeof(struct lpfc_queue) +
+                        (sizeof(union sli4_qe) * entry_count), GFP_KERNEL);
+        if (!queue)
+                return NULL;
+        queue->page_count = (PAGE_ALIGN(entry_size * entry_count))/PAGE_SIZE;
+        INIT_LIST_HEAD(&queue->list);
+        INIT_LIST_HEAD(&queue->page_list);
+        INIT_LIST_HEAD(&queue->child_list);
+        for (x = 0, total_qe_count = 0; x < queue->page_count; x++) {
+                dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
+                if (!dmabuf)
+                        goto out_fail;
+                dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
+                                                  PAGE_SIZE, &dmabuf->phys,
+                                                  GFP_KERNEL);
+                if (!dmabuf->virt) {
+                        kfree(dmabuf);
+                        goto out_fail;
+                }
+                memset(dmabuf->virt, 0, PAGE_SIZE);
+                dmabuf->buffer_tag = x;
+                list_add_tail(&dmabuf->list, &queue->page_list);
+                /* initialize queue's entry array */
+                dma_pointer = dmabuf->virt;
+                for (; total_qe_count < entry_count &&
+                     dma_pointer < (PAGE_SIZE + dmabuf->virt);
+                     total_qe_count++, dma_pointer += entry_size) {
+                        queue->qe[total_qe_count].address = dma_pointer;
+                }
+        }
+        queue->entry_size = entry_size;
+        queue->entry_count = entry_count;
+        queue->phba = phba;
+
+        return queue;
+out_fail:
+        lpfc_sli4_queue_free(queue);
+        return NULL;
+}
+
+/**
+ * lpfc_eq_create - Create an Event Queue on the HBA
+ * @phba: HBA structure that indicates port to create a queue on.
+ * @eq: The queue structure to use to create the event queue.
+ * @imax: The maximum interrupt per second limit.
+ *
+ * This function creates an event queue, as detailed in @eq, on a port,
+ * described by @phba by sending an EQ_CREATE mailbox command to the HBA.
+ *
+ * The @phba struct is used to send mailbox command to HBA. The @eq 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 EQ_CREATE mailbox command to the HBA to setup the
+ * event 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_eq_create(struct lpfc_hba *phba, struct lpfc_queue *eq, uint16_t imax)
+{
+        struct lpfc_mbx_eq_create *eq_create;
+        LPFC_MBOXQ_t *mbox;
+        int rc, length, status = 0;
+        struct lpfc_dmabuf *dmabuf;
+        uint32_t shdr_status, shdr_add_status;
+        union lpfc_sli4_cfg_shdr *shdr;
+        uint16_t dmult;
+
+        mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mbox)
+                return -ENOMEM;
+        length = (sizeof(struct lpfc_mbx_eq_create) -
+                  sizeof(struct lpfc_sli4_cfg_mhdr));
+        lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+                         LPFC_MBOX_OPCODE_EQ_CREATE,
+                         length, LPFC_SLI4_MBX_EMBED);
+        eq_create = &mbox->u.mqe.un.eq_create;
+        bf_set(lpfc_mbx_eq_create_num_pages, &eq_create->u.request,
+               eq->page_count);
+        bf_set(lpfc_eq_context_size, &eq_create->u.request.context,
+               LPFC_EQE_SIZE);
+        bf_set(lpfc_eq_context_valid, &eq_create->u.request.context, 1);
+        /* Calculate delay multiper from maximum interrupt per second */
+        dmult = LPFC_DMULT_CONST/imax - 1;
+        bf_set(lpfc_eq_context_delay_multi, &eq_create->u.request.context,
+               dmult);
+        switch (eq->entry_count) {
+        default:
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "0360 Unsupported EQ count. (%d)\n",
+                                eq->entry_count);
+                if (eq->entry_count < 256)
+                        return -EINVAL;
+                /* otherwise default to smallest count (drop through) */
+        case 256:
+                bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
+                       LPFC_EQ_CNT_256);
+                break;
+        case 512:
+                bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
+                       LPFC_EQ_CNT_512);
+                break;
+        case 1024:
+                bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
+                       LPFC_EQ_CNT_1024);
+                break;
+        case 2048:
+                bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
+                       LPFC_EQ_CNT_2048);
+                break;
+        case 4096:
+                bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
+                       LPFC_EQ_CNT_4096);
+                break;
+        }
+        list_for_each_entry(dmabuf, &eq->page_list, list) {
+                eq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
+                                        putPaddrLow(dmabuf->phys);
+                eq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
+                                        putPaddrHigh(dmabuf->phys);
+        }
+        mbox->vport = phba->pport;
+        mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+        mbox->context1 = NULL;
+        rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+        shdr = (union lpfc_sli4_cfg_shdr *) &eq_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,
+                                "2500 EQ_CREATE mailbox failed with "
+                                "status x%x add_status x%x, mbx status x%x\n",
+                                shdr_status, shdr_add_status, rc);
+                status = -ENXIO;
+        }
+        eq->type = LPFC_EQ;
+        eq->subtype = LPFC_NONE;
+        eq->queue_id = bf_get(lpfc_mbx_eq_create_q_id, &eq_create->u.response);
+        if (eq->queue_id == 0xFFFF)
+                status = -ENXIO;
+        eq->host_index = 0;
+        eq->hba_index = 0;
+
+        if (rc != MBX_TIMEOUT)
+                mempool_free(mbox, phba->mbox_mem_pool);
+        return status;
+}
+
+/**
+ * lpfc_cq_create - Create a Completion Queue on the HBA
+ * @phba: HBA structure that indicates port to create a queue on.
+ * @cq: The queue structure to use to create the completion queue.
+ * @eq: The event queue to bind this completion queue to.
+ *
+ * This function creates a completion queue, as detailed in @wq, on a port,
+ * described by @phba by sending a CQ_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. The @eq
+ * is used to indicate which event queue to bind this completion queue to. This
+ * function will send the CQ_CREATE mailbox command to the HBA to setup the
+ * completion 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_cq_create(struct lpfc_hba *phba, struct lpfc_queue *cq,
+               struct lpfc_queue *eq, uint32_t type, uint32_t subtype)
+{
+        struct lpfc_mbx_cq_create *cq_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_cq_create) -
+                  sizeof(struct lpfc_sli4_cfg_mhdr));
+        lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+                         LPFC_MBOX_OPCODE_CQ_CREATE,
+                         length, LPFC_SLI4_MBX_EMBED);
+        cq_create = &mbox->u.mqe.un.cq_create;
+        bf_set(lpfc_mbx_cq_create_num_pages, &cq_create->u.request,
+                    cq->page_count);
+        bf_set(lpfc_cq_context_event, &cq_create->u.request.context, 1);
+        bf_set(lpfc_cq_context_valid, &cq_create->u.request.context, 1);
+        bf_set(lpfc_cq_eq_id, &cq_create->u.request.context, eq->queue_id);
+        switch (cq->entry_count) {
+        default:
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "0361 Unsupported CQ count. (%d)\n",
+                                cq->entry_count);
+                if (cq->entry_count < 256)
+                        return -EINVAL;
+                /* otherwise default to smallest count (drop through) */
+        case 256:
+                bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
+                       LPFC_CQ_CNT_256);
+                break;
+        case 512:
+                bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
+                       LPFC_CQ_CNT_512);
+                break;
+        case 1024:
+                bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
+                       LPFC_CQ_CNT_1024);
+                break;
+        }
+        list_for_each_entry(dmabuf, &cq->page_list, list) {
+                cq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
+                                        putPaddrLow(dmabuf->phys);
+                cq_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 *) &cq_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,
+                                "2501 CQ_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;
+        }
+        cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response);
+        if (cq->queue_id == 0xFFFF) {
+                status = -ENXIO;
+                goto out;
+        }
+        /* link the cq onto the parent eq child list */
+        list_add_tail(&cq->list, &eq->child_list);
+        /* Set up completion queue's type and subtype */
+        cq->type = type;
+        cq->subtype = subtype;
+        cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response);
+        cq->host_index = 0;
+        cq->hba_index = 0;
+out:
+
+        if (rc != MBX_TIMEOUT)
+                mempool_free(mbox, phba->mbox_mem_pool);
+        return status;
+}
+
+/**
+ * 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.
+ * @cq: The completion queue to bind this work queue to.
+ * @subtype: The subtype of the work queue indicating its functionality.
+ *
+ * This function creates a work queue, as detailed in @wq, on a port, described
+ * by @phba by sending a WQ_CREATE mailbox command to the HBA.
+ *
+ * The @phba struct is used to send mailbox command to HBA. The @wq 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. The @cq
+ * is used to indicate which completion queue to bind this work queue to. This
+ * function will send the WQ_CREATE mailbox command to the HBA to setup the
+ * work 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_wq_create(struct lpfc_hba *phba, struct lpfc_queue *wq,
+               struct lpfc_queue *cq, uint32_t subtype)
+{
+        struct lpfc_mbx_wq_create *wq_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_wq_create) -
+                  sizeof(struct lpfc_sli4_cfg_mhdr));
+        lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+                         LPFC_MBOX_OPCODE_FCOE_WQ_CREATE,
+                         length, LPFC_SLI4_MBX_EMBED);
+        wq_create = &mbox->u.mqe.un.wq_create;
+        bf_set(lpfc_mbx_wq_create_num_pages, &wq_create->u.request,
+                    wq->page_count);
+        bf_set(lpfc_mbx_wq_create_cq_id, &wq_create->u.request,
+                    cq->queue_id);
+        list_for_each_entry(dmabuf, &wq->page_list, list) {
+                wq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
+                                        putPaddrLow(dmabuf->phys);
+                wq_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 *) &wq_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,
+                                "2503 WQ_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;
+        }
+        wq->queue_id = bf_get(lpfc_mbx_wq_create_q_id, &wq_create->u.response);
+        if (wq->queue_id == 0xFFFF) {
+                status = -ENXIO;
+                goto out;
+        }
+        wq->type = LPFC_WQ;
+        wq->subtype = subtype;
+        wq->host_index = 0;
+        wq->hba_index = 0;
+
+        /* link the wq onto the parent cq child list */
+        list_add_tail(&wq->list, &cq->child_list);
+out:
+        if (rc != MBX_TIMEOUT)
+                mempool_free(mbox, phba->mbox_mem_pool);
+        return status;
+}
+
+/**
+ * lpfc_rq_create - Create a Receive Queue on the HBA
+ * @phba: HBA structure that indicates port to create a queue on.
+ * @hrq: The queue structure to use to create the header receive queue.
+ * @drq: The queue structure to use to create the data receive queue.
+ * @cq: The completion queue to bind this work queue to.
+ *
+ * This function creates a receive buffer queue pair , as detailed in @hrq and
+ * @drq, on a port, described by @phba by sending a RQ_CREATE mailbox command
+ * to the HBA.
+ *
+ * The @phba struct is used to send mailbox command to HBA. The @drq and @hrq
+ * struct is used to get the entry count that is necessary to determine the
+ * number of pages to use for this queue. The @cq is used to indicate which
+ * completion queue to bind received buffers that are posted to these queues to.
+ * This function will send the RQ_CREATE mailbox command to the HBA to setup the
+ * receive queue pair. 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_rq_create(struct lpfc_hba *phba, struct lpfc_queue *hrq,
+               struct lpfc_queue *drq, struct lpfc_queue *cq, uint32_t subtype)
+{
+        struct lpfc_mbx_rq_create *rq_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;
+
+        if (hrq->entry_count != drq->entry_count)
+                return -EINVAL;
+        mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mbox)
+                return -ENOMEM;
+        length = (sizeof(struct lpfc_mbx_rq_create) -
+                  sizeof(struct lpfc_sli4_cfg_mhdr));
+        lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+                         LPFC_MBOX_OPCODE_FCOE_RQ_CREATE,
+                         length, LPFC_SLI4_MBX_EMBED);
+        rq_create = &mbox->u.mqe.un.rq_create;
+        switch (hrq->entry_count) {
+        default:
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "2535 Unsupported RQ count. (%d)\n",
+                                hrq->entry_count);
+                if (hrq->entry_count < 512)
+                        return -EINVAL;
+                /* otherwise default to smallest count (drop through) */
+        case 512:
+                bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
+                       LPFC_RQ_RING_SIZE_512);
+                break;
+        case 1024:
+                bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
+                       LPFC_RQ_RING_SIZE_1024);
+                break;
+        case 2048:
+                bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
+                       LPFC_RQ_RING_SIZE_2048);
+                break;
+        case 4096:
+                bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
+                       LPFC_RQ_RING_SIZE_4096);
+                break;
+        }
+        bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context,
+               cq->queue_id);
+        bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request,
+               hrq->page_count);
+        bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context,
+               LPFC_HDR_BUF_SIZE);
+        list_for_each_entry(dmabuf, &hrq->page_list, list) {
+                rq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
+                                        putPaddrLow(dmabuf->phys);
+                rq_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 *) &rq_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,
+                                "2504 RQ_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;
+        }
+        hrq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response);
+        if (hrq->queue_id == 0xFFFF) {
+                status = -ENXIO;
+                goto out;
+        }
+        hrq->type = LPFC_HRQ;
+        hrq->subtype = subtype;
+        hrq->host_index = 0;
+        hrq->hba_index = 0;
+
+        /* now create the data queue */
+        lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+                         LPFC_MBOX_OPCODE_FCOE_RQ_CREATE,
+                         length, LPFC_SLI4_MBX_EMBED);
+        switch (drq->entry_count) {
+        default:
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "2536 Unsupported RQ count. (%d)\n",
+                                drq->entry_count);
+                if (drq->entry_count < 512)
+                        return -EINVAL;
+                /* otherwise default to smallest count (drop through) */
+        case 512:
+                bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
+                       LPFC_RQ_RING_SIZE_512);
+                break;
+        case 1024:
+                bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
+                       LPFC_RQ_RING_SIZE_1024);
+                break;
+        case 2048:
+                bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
+                       LPFC_RQ_RING_SIZE_2048);
+                break;
+        case 4096:
+                bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
+                       LPFC_RQ_RING_SIZE_4096);
+                break;
+        }
+        bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context,
+               cq->queue_id);
+        bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request,
+               drq->page_count);
+        bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context,
+               LPFC_DATA_BUF_SIZE);
+        list_for_each_entry(dmabuf, &drq->page_list, list) {
+                rq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
+                                        putPaddrLow(dmabuf->phys);
+                rq_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 *) &rq_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) {
+                status = -ENXIO;
+                goto out;
+        }
+        drq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response);
+        if (drq->queue_id == 0xFFFF) {
+                status = -ENXIO;
+                goto out;
+        }
+        drq->type = LPFC_DRQ;
+        drq->subtype = subtype;
+        drq->host_index = 0;
+        drq->hba_index = 0;
+
+        /* link the header and data RQs onto the parent cq child list */
+        list_add_tail(&hrq->list, &cq->child_list);
+        list_add_tail(&drq->list, &cq->child_list);
+
+out:
+        if (rc != MBX_TIMEOUT)
+                mempool_free(mbox, phba->mbox_mem_pool);
+        return status;
+}
+
+/**
+ * lpfc_eq_destroy - Destroy an event Queue on the HBA
+ * @eq: The queue structure associated with the queue to destroy.
+ *
+ * This function destroys a queue, as detailed in @eq by sending an mailbox
+ * command, specific to the type of queue, to the HBA.
+ *
+ * The @eq 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_eq_destroy(struct lpfc_hba *phba, struct lpfc_queue *eq)
+{
+        LPFC_MBOXQ_t *mbox;
+        int rc, length, status = 0;
+        uint32_t shdr_status, shdr_add_status;
+        union lpfc_sli4_cfg_shdr *shdr;
+
+        if (!eq)
+                return -ENODEV;
+        mbox = mempool_alloc(eq->phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mbox)
+                return -ENOMEM;
+        length = (sizeof(struct lpfc_mbx_eq_destroy) -
+                  sizeof(struct lpfc_sli4_cfg_mhdr));
+        lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+                         LPFC_MBOX_OPCODE_EQ_DESTROY,
+                         length, LPFC_SLI4_MBX_EMBED);
+        bf_set(lpfc_mbx_eq_destroy_q_id, &mbox->u.mqe.un.eq_destroy.u.request,
+               eq->queue_id);
+        mbox->vport = eq->phba->pport;
+        mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+
+        rc = lpfc_sli_issue_mbox(eq->phba, mbox, MBX_POLL);
+        /* The IOCTL status is embedded in the mailbox subheader. */
+        shdr = (union lpfc_sli4_cfg_shdr *)
+                &mbox->u.mqe.un.eq_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,
+                                "2505 EQ_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 eq from any list */
+        list_del_init(&eq->list);
+        if (rc != MBX_TIMEOUT)
+                mempool_free(mbox, eq->phba->mbox_mem_pool);
+        return status;
+}
+
+/**
+ * lpfc_cq_destroy - Destroy a Completion Queue on the HBA
+ * @cq: The queue structure associated with the queue to destroy.
+ *
+ * This function destroys a queue, as detailed in @cq by sending an mailbox
+ * command, specific to the type of queue, to the HBA.
+ *
+ * The @cq 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_cq_destroy(struct lpfc_hba *phba, struct lpfc_queue *cq)
+{
+        LPFC_MBOXQ_t *mbox;
+        int rc, length, status = 0;
+        uint32_t shdr_status, shdr_add_status;
+        union lpfc_sli4_cfg_shdr *shdr;
+
+        if (!cq)
+                return -ENODEV;
+        mbox = mempool_alloc(cq->phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mbox)
+                return -ENOMEM;
+        length = (sizeof(struct lpfc_mbx_cq_destroy) -
+                  sizeof(struct lpfc_sli4_cfg_mhdr));
+        lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
+                         LPFC_MBOX_OPCODE_CQ_DESTROY,
+                         length, LPFC_SLI4_MBX_EMBED);
+        bf_set(lpfc_mbx_cq_destroy_q_id, &mbox->u.mqe.un.cq_destroy.u.request,
+               cq->queue_id);
+        mbox->vport = cq->phba->pport;
+        mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+        rc = lpfc_sli_issue_mbox(cq->phba, mbox, MBX_POLL);
+        /* The IOCTL status is embedded in the mailbox subheader. */
+        shdr = (union lpfc_sli4_cfg_shdr *)
+                &mbox->u.mqe.un.wq_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,
+                                "2506 CQ_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 cq from any list */
+        list_del_init(&cq->list);
+        if (rc != MBX_TIMEOUT)
+                mempool_free(mbox, cq->phba->mbox_mem_pool);
+        return status;
+}
+
+/**
+ * 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.
+ *
+ * This function destroys a queue, as detailed in @wq by sending an mailbox
+ * command, specific to the type of queue, to the HBA.
+ *
+ * The @wq 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_wq_destroy(struct lpfc_hba *phba, struct lpfc_queue *wq)
+{
+        LPFC_MBOXQ_t *mbox;
+        int rc, length, status = 0;
+        uint32_t shdr_status, shdr_add_status;
+        union lpfc_sli4_cfg_shdr *shdr;
+
+        if (!wq)
+                return -ENODEV;
+        mbox = mempool_alloc(wq->phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mbox)
+                return -ENOMEM;
+        length = (sizeof(struct lpfc_mbx_wq_destroy) -
+                  sizeof(struct lpfc_sli4_cfg_mhdr));
+        lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+                         LPFC_MBOX_OPCODE_FCOE_WQ_DESTROY,
+                         length, LPFC_SLI4_MBX_EMBED);
+        bf_set(lpfc_mbx_wq_destroy_q_id, &mbox->u.mqe.un.wq_destroy.u.request,
+               wq->queue_id);
+        mbox->vport = wq->phba->pport;
+        mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+        rc = lpfc_sli_issue_mbox(wq->phba, mbox, MBX_POLL);
+        shdr = (union lpfc_sli4_cfg_shdr *)
+                &mbox->u.mqe.un.wq_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,
+                                "2508 WQ_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 wq from any list */
+        list_del_init(&wq->list);
+        if (rc != MBX_TIMEOUT)
+                mempool_free(mbox, wq->phba->mbox_mem_pool);
+        return status;
+}
+
+/**
+ * lpfc_rq_destroy - Destroy a Receive Queue on the HBA
+ * @rq: The queue structure associated with the queue to destroy.
+ *
+ * This function destroys a queue, as detailed in @rq by sending an mailbox
+ * command, specific to the type of queue, to the HBA.
+ *
+ * The @rq 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_rq_destroy(struct lpfc_hba *phba, struct lpfc_queue *hrq,
+                struct lpfc_queue *drq)
+{
+        LPFC_MBOXQ_t *mbox;
+        int rc, length, status = 0;
+        uint32_t shdr_status, shdr_add_status;
+        union lpfc_sli4_cfg_shdr *shdr;
+
+        if (!hrq || !drq)
+                return -ENODEV;
+        mbox = mempool_alloc(hrq->phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mbox)
+                return -ENOMEM;
+        length = (sizeof(struct lpfc_mbx_rq_destroy) -
+                  sizeof(struct mbox_header));
+        lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+                         LPFC_MBOX_OPCODE_FCOE_RQ_DESTROY,
+                         length, LPFC_SLI4_MBX_EMBED);
+        bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request,
+               hrq->queue_id);
+        mbox->vport = hrq->phba->pport;
+        mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+        rc = lpfc_sli_issue_mbox(hrq->phba, mbox, MBX_POLL);
+        /* The IOCTL status is embedded in the mailbox subheader. */
+        shdr = (union lpfc_sli4_cfg_shdr *)
+                &mbox->u.mqe.un.rq_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,
+                                "2509 RQ_DESTROY mailbox failed with "
+                                "status x%x add_status x%x, mbx status x%x\n",
+                                shdr_status, shdr_add_status, rc);
+                if (rc != MBX_TIMEOUT)
+                        mempool_free(mbox, hrq->phba->mbox_mem_pool);
+                return -ENXIO;
+        }
+        bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request,
+               drq->queue_id);
+        rc = lpfc_sli_issue_mbox(drq->phba, mbox, MBX_POLL);
+        shdr = (union lpfc_sli4_cfg_shdr *)
+                &mbox->u.mqe.un.rq_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,
+                                "2510 RQ_DESTROY mailbox failed with "
+                                "status x%x add_status x%x, mbx status x%x\n",
+                                shdr_status, shdr_add_status, rc);
+                status = -ENXIO;
+        }
+        list_del_init(&hrq->list);
+        list_del_init(&drq->list);
+        if (rc != MBX_TIMEOUT)
+                mempool_free(mbox, hrq->phba->mbox_mem_pool);
+        return status;
+}
+
+/**
+ * lpfc_sli4_post_sgl - Post scatter gather list for an XRI to HBA
+ * @phba: The virtual port for which this call being executed.
+ * @pdma_phys_addr0: Physical address of the 1st SGL page.
+ * @pdma_phys_addr1: Physical address of the 2nd SGL page.
+ * @xritag: the xritag that ties this io to the SGL pages.
+ *
+ * This routine will post the sgl pages for the IO that has the xritag
+ * that is in the iocbq structure. The xritag is assigned during iocbq
+ * creation and persists for as long as the driver is loaded.
+ * if the caller has fewer than 256 scatter gather segments to map then
+ * pdma_phys_addr1 should be 0.
+ * If the caller needs to map more than 256 scatter gather segment then
+ * pdma_phys_addr1 should be a valid physical address.
+ * physical address for SGLs must be 64 byte aligned.
+ * If you are going to map 2 SGL's then the first one must have 256 entries
+ * the second sgl can have between 1 and 256 entries.
+ *
+ * Return codes:
+ *      0 - Success
+ *      -ENXIO, -ENOMEM - Failure
+ **/
+int
+lpfc_sli4_post_sgl(struct lpfc_hba *phba,
+                dma_addr_t pdma_phys_addr0,
+                dma_addr_t pdma_phys_addr1,
+                uint16_t xritag)
+{
+        struct lpfc_mbx_post_sgl_pages *post_sgl_pages;
+        LPFC_MBOXQ_t *mbox;
+        int rc;
+        uint32_t shdr_status, shdr_add_status;
+        union lpfc_sli4_cfg_shdr *shdr;
+
+        if (xritag == NO_XRI) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "0364 Invalid param:\n");
+                return -EINVAL;
+        }
+
+        mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mbox)
+                return -ENOMEM;
+
+        lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+                        LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES,
+                        sizeof(struct lpfc_mbx_post_sgl_pages) -
+                        sizeof(struct mbox_header), LPFC_SLI4_MBX_EMBED);
+
+        post_sgl_pages = (struct lpfc_mbx_post_sgl_pages *)
+                                &mbox->u.mqe.un.post_sgl_pages;
+        bf_set(lpfc_post_sgl_pages_xri, post_sgl_pages, xritag);
+        bf_set(lpfc_post_sgl_pages_xricnt, post_sgl_pages, 1);
+
+        post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_lo =
+                                cpu_to_le32(putPaddrLow(pdma_phys_addr0));
+        post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_hi =
+                                cpu_to_le32(putPaddrHigh(pdma_phys_addr0));
+
+        post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_lo =
+                                cpu_to_le32(putPaddrLow(pdma_phys_addr1));
+        post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_hi =
+                                cpu_to_le32(putPaddrHigh(pdma_phys_addr1));
+        if (!phba->sli4_hba.intr_enable)
+                rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+        else
+                rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
+        /* The IOCTL status is embedded in the mailbox subheader. */
+        shdr = (union lpfc_sli4_cfg_shdr *) &post_sgl_pages->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 (rc != MBX_TIMEOUT)
+                mempool_free(mbox, phba->mbox_mem_pool);
+        if (shdr_status || shdr_add_status || rc) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "2511 POST_SGL mailbox failed with "
+                                "status x%x add_status x%x, mbx status x%x\n",
+                                shdr_status, shdr_add_status, rc);
+                rc = -ENXIO;
+        }
+        return 0;
+}
+/**
+ * lpfc_sli4_remove_all_sgl_pages - Post scatter gather list for an XRI to HBA
+ * @phba: The virtual port for which this call being executed.
+ *
+ * This routine will remove all of the sgl pages registered with the hba.
+ *
+ * Return codes:
+ *      0 - Success
+ *      -ENXIO, -ENOMEM - Failure
+ **/
+int
+lpfc_sli4_remove_all_sgl_pages(struct lpfc_hba *phba)
+{
+        LPFC_MBOXQ_t *mbox;
+        int rc;
+        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;
+
+        lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+                        LPFC_MBOX_OPCODE_FCOE_REMOVE_SGL_PAGES, 0,
+                        LPFC_SLI4_MBX_EMBED);
+        if (!phba->sli4_hba.intr_enable)
+                rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+        else
+                rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
+        /* The IOCTL status is embedded in the mailbox subheader. */
+        shdr = (union lpfc_sli4_cfg_shdr *)
+                &mbox->u.mqe.un.sli4_config.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 (rc != MBX_TIMEOUT)
+                mempool_free(mbox, phba->mbox_mem_pool);
+        if (shdr_status || shdr_add_status || rc) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "2512 REMOVE_ALL_SGL_PAGES mailbox failed with "
+                                "status x%x add_status x%x, mbx status x%x\n",
+                                shdr_status, shdr_add_status, rc);
+                rc = -ENXIO;
+        }
+        return rc;
+}
+
+/**
+ * lpfc_sli4_next_xritag - Get an xritag for the io
+ * @phba: Pointer to HBA context object.
+ *
+ * This function gets an xritag for the iocb. If there is no unused xritag
+ * it will return 0xffff.
+ * The function returns the allocated xritag if successful, else returns zero.
+ * Zero is not a valid xritag.
+ * The caller is not required to hold any lock.
+ **/
+uint16_t
+lpfc_sli4_next_xritag(struct lpfc_hba *phba)
+{
+        uint16_t xritag;
+
+        spin_lock_irq(&phba->hbalock);
+        xritag = phba->sli4_hba.next_xri;
+        if ((xritag != (uint16_t) -1) && xritag <
+                (phba->sli4_hba.max_cfg_param.max_xri
+                        + phba->sli4_hba.max_cfg_param.xri_base)) {
+                phba->sli4_hba.next_xri++;
+                phba->sli4_hba.max_cfg_param.xri_used++;
+                spin_unlock_irq(&phba->hbalock);
+                return xritag;
+        }
+        spin_unlock_irq(&phba->hbalock);
+
+        lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                        "2004 Failed to allocate XRI.last XRITAG is %d"
+                        " Max XRI is %d, Used XRI is %d\n",
+                        phba->sli4_hba.next_xri,
+                        phba->sli4_hba.max_cfg_param.max_xri,
+                        phba->sli4_hba.max_cfg_param.xri_used);
+        return -1;
+}
+
+/**
+ * lpfc_sli4_post_sgl_list - post a block of sgl list to the firmware.
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is invoked to post a block of driver's sgl pages to the
+ * HBA using non-embedded mailbox command. No Lock is held. This routine
+ * is only called when the driver is loading and after all IO has been
+ * stopped.
+ **/
+int
+lpfc_sli4_post_sgl_list(struct lpfc_hba *phba)
+{
+        struct lpfc_sglq *sglq_entry;
+        struct lpfc_mbx_post_uembed_sgl_page1 *sgl;
+        struct sgl_page_pairs *sgl_pg_pairs;
+        void *viraddr;
+        LPFC_MBOXQ_t *mbox;
+        uint32_t reqlen, alloclen, pg_pairs;
+        uint32_t mbox_tmo;
+        uint16_t xritag_start = 0;
+        int els_xri_cnt, rc = 0;
+        uint32_t shdr_status, shdr_add_status;
+        union lpfc_sli4_cfg_shdr *shdr;
+
+        /* The number of sgls to be posted */
+        els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
+
+        reqlen = els_xri_cnt * sizeof(struct sgl_page_pairs) +
+                 sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t);
+        if (reqlen > PAGE_SIZE) {
+                lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
+                                "2559 Block sgl registration required DMA "
+                                "size (%d) great than a page\n", reqlen);
+                return -ENOMEM;
+        }
+        mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mbox) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "2560 Failed to allocate mbox cmd memory\n");
+                return -ENOMEM;
+        }
+
+        /* Allocate DMA memory and set up the non-embedded mailbox command */
+        alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+                         LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen,
+                         LPFC_SLI4_MBX_NEMBED);
+
+        if (alloclen < reqlen) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "0285 Allocated DMA memory size (%d) is "
+                                "less than the requested DMA memory "
+                                "size (%d)\n", alloclen, reqlen);
+                lpfc_sli4_mbox_cmd_free(phba, mbox);
+                return -ENOMEM;
+        }
+
+        /* Get the first SGE entry from the non-embedded DMA memory */
+        if (unlikely(!mbox->sge_array)) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
+                                "2525 Failed to get the non-embedded SGE "
+                                "virtual address\n");
+                lpfc_sli4_mbox_cmd_free(phba, mbox);
+                return -ENOMEM;
+        }
+        viraddr = mbox->sge_array->addr[0];
+
+        /* Set up the SGL pages in the non-embedded DMA pages */
+        sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr;
+        sgl_pg_pairs = &sgl->sgl_pg_pairs;
+
+        for (pg_pairs = 0; pg_pairs < els_xri_cnt; pg_pairs++) {
+                sglq_entry = phba->sli4_hba.lpfc_els_sgl_array[pg_pairs];
+                /* Set up the sge entry */
+                sgl_pg_pairs->sgl_pg0_addr_lo =
+                                cpu_to_le32(putPaddrLow(sglq_entry->phys));
+                sgl_pg_pairs->sgl_pg0_addr_hi =
+                                cpu_to_le32(putPaddrHigh(sglq_entry->phys));
+                sgl_pg_pairs->sgl_pg1_addr_lo =
+                                cpu_to_le32(putPaddrLow(0));
+                sgl_pg_pairs->sgl_pg1_addr_hi =
+                                cpu_to_le32(putPaddrHigh(0));
+                /* Keep the first xritag on the list */
+                if (pg_pairs == 0)
+                        xritag_start = sglq_entry->sli4_xritag;
+                sgl_pg_pairs++;
+        }
+        bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start);
+        pg_pairs = (pg_pairs > 0) ? (pg_pairs - 1) : pg_pairs;
+        bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs);
+        /* Perform endian conversion if necessary */
+        sgl->word0 = cpu_to_le32(sgl->word0);
+
+        if (!phba->sli4_hba.intr_enable)
+                rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+        else {
+                mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
+                rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
+        }
+        shdr = (union lpfc_sli4_cfg_shdr *) &sgl->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 (rc != MBX_TIMEOUT)
+                lpfc_sli4_mbox_cmd_free(phba, mbox);
+        if (shdr_status || shdr_add_status || rc) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "2513 POST_SGL_BLOCK mailbox command failed "
+                                "status x%x add_status x%x mbx status x%x\n",
+                                shdr_status, shdr_add_status, rc);
+                rc = -ENXIO;
+        }
+        return rc;
+}
+
+/**
+ * lpfc_sli4_post_scsi_sgl_block - post a block of scsi sgl list to firmware
+ * @phba: pointer to lpfc hba data structure.
+ * @sblist: pointer to scsi buffer list.
+ * @count: number of scsi buffers on the list.
+ *
+ * This routine is invoked to post a block of @count scsi sgl pages from a
+ * SCSI buffer list @sblist to the HBA using non-embedded mailbox command.
+ * No Lock is held.
+ *
+ **/
+int
+lpfc_sli4_post_scsi_sgl_block(struct lpfc_hba *phba, struct list_head *sblist,
+                              int cnt)
+{
+        struct lpfc_scsi_buf *psb;
+        struct lpfc_mbx_post_uembed_sgl_page1 *sgl;
+        struct sgl_page_pairs *sgl_pg_pairs;
+        void *viraddr;
+        LPFC_MBOXQ_t *mbox;
+        uint32_t reqlen, alloclen, pg_pairs;
+        uint32_t mbox_tmo;
+        uint16_t xritag_start = 0;
+        int rc = 0;
+        uint32_t shdr_status, shdr_add_status;
+        dma_addr_t pdma_phys_bpl1;
+        union lpfc_sli4_cfg_shdr *shdr;
+
+        /* Calculate the requested length of the dma memory */
+        reqlen = cnt * sizeof(struct sgl_page_pairs) +
+                 sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t);
+        if (reqlen > PAGE_SIZE) {
+                lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
+                                "0217 Block sgl registration required DMA "
+                                "size (%d) great than a page\n", reqlen);
+                return -ENOMEM;
+        }
+        mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mbox) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "0283 Failed to allocate mbox cmd memory\n");
+                return -ENOMEM;
+        }
+
+        /* Allocate DMA memory and set up the non-embedded mailbox command */
+        alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
+                                LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen,
+                                LPFC_SLI4_MBX_NEMBED);
+
+        if (alloclen < reqlen) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "2561 Allocated DMA memory size (%d) is "
+                                "less than the requested DMA memory "
+                                "size (%d)\n", alloclen, reqlen);
+                lpfc_sli4_mbox_cmd_free(phba, mbox);
+                return -ENOMEM;
+        }
+
+        /* Get the first SGE entry from the non-embedded DMA memory */
+        if (unlikely(!mbox->sge_array)) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
+                                "2565 Failed to get the non-embedded SGE "
+                                "virtual address\n");
+                lpfc_sli4_mbox_cmd_free(phba, mbox);
+                return -ENOMEM;
+        }
+        viraddr = mbox->sge_array->addr[0];
+
+        /* Set up the SGL pages in the non-embedded DMA pages */
+        sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr;
+        sgl_pg_pairs = &sgl->sgl_pg_pairs;
+
+        pg_pairs = 0;
+        list_for_each_entry(psb, sblist, list) {
+                /* Set up the sge entry */
+                sgl_pg_pairs->sgl_pg0_addr_lo =
+                        cpu_to_le32(putPaddrLow(psb->dma_phys_bpl));
+                sgl_pg_pairs->sgl_pg0_addr_hi =
+                        cpu_to_le32(putPaddrHigh(psb->dma_phys_bpl));
+                if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE)
+                        pdma_phys_bpl1 = psb->dma_phys_bpl + SGL_PAGE_SIZE;
+                else
+                        pdma_phys_bpl1 = 0;
+                sgl_pg_pairs->sgl_pg1_addr_lo =
+                        cpu_to_le32(putPaddrLow(pdma_phys_bpl1));
+                sgl_pg_pairs->sgl_pg1_addr_hi =
+                        cpu_to_le32(putPaddrHigh(pdma_phys_bpl1));
+                /* Keep the first xritag on the list */
+                if (pg_pairs == 0)
+                        xritag_start = psb->cur_iocbq.sli4_xritag;
+                sgl_pg_pairs++;
+                pg_pairs++;
+        }
+        bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start);
+        bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs);
+        /* Perform endian conversion if necessary */
+        sgl->word0 = cpu_to_le32(sgl->word0);
+
+        if (!phba->sli4_hba.intr_enable)
+                rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
+        else {
+                mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
+                rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
+        }
+        shdr = (union lpfc_sli4_cfg_shdr *) &sgl->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 (rc != MBX_TIMEOUT)
+                lpfc_sli4_mbox_cmd_free(phba, mbox);
+        if (shdr_status || shdr_add_status || rc) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "2564 POST_SGL_BLOCK mailbox command failed "
+                                "status x%x add_status x%x mbx status x%x\n",
+                                shdr_status, shdr_add_status, rc);
+                rc = -ENXIO;
+        }
+        return rc;
+}
+
+/**
+ * lpfc_fc_frame_check - Check that this frame is a valid frame to handle
+ * @phba: pointer to lpfc_hba struct that the frame was received on
+ * @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
+ *
+ * This function checks the fields in the @fc_hdr to see if the FC frame is a
+ * valid type of frame that the LPFC driver will handle. This function will
+ * return a zero if the frame is a valid frame or a non zero value when the
+ * frame does not pass the check.
+ **/
+static int
+lpfc_fc_frame_check(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr)
+{
+        char *rctl_names[] = FC_RCTL_NAMES_INIT;
+        char *type_names[] = FC_TYPE_NAMES_INIT;
+        struct fc_vft_header *fc_vft_hdr;
+
+        switch (fc_hdr->fh_r_ctl) {
+        case FC_RCTL_DD_UNCAT:          /* uncategorized information */
+        case FC_RCTL_DD_SOL_DATA:       /* solicited data */
+        case FC_RCTL_DD_UNSOL_CTL:      /* unsolicited control */
+        case FC_RCTL_DD_SOL_CTL:        /* solicited control or reply */
+        case FC_RCTL_DD_UNSOL_DATA:     /* unsolicited data */
+        case FC_RCTL_DD_DATA_DESC:      /* data descriptor */
+        case FC_RCTL_DD_UNSOL_CMD:      /* unsolicited command */
+        case FC_RCTL_DD_CMD_STATUS:     /* command status */
+        case FC_RCTL_ELS_REQ:   /* extended link services request */
+        case FC_RCTL_ELS_REP:   /* extended link services reply */
+        case FC_RCTL_ELS4_REQ:  /* FC-4 ELS request */
+        case FC_RCTL_ELS4_REP:  /* FC-4 ELS reply */
+        case FC_RCTL_BA_NOP:    /* basic link service NOP */
+        case FC_RCTL_BA_ABTS:   /* basic link service abort */
+        case FC_RCTL_BA_RMC:    /* remove connection */
+        case FC_RCTL_BA_ACC:    /* basic accept */
+        case FC_RCTL_BA_RJT:    /* basic reject */
+        case FC_RCTL_BA_PRMT:
+        case FC_RCTL_ACK_1:     /* acknowledge_1 */
+        case FC_RCTL_ACK_0:     /* acknowledge_0 */
+        case FC_RCTL_P_RJT:     /* port reject */
+        case FC_RCTL_F_RJT:     /* fabric reject */
+        case FC_RCTL_P_BSY:     /* port busy */
+        case FC_RCTL_F_BSY:     /* fabric busy to data frame */
+        case FC_RCTL_F_BSYL:    /* fabric busy to link control frame */
+        case FC_RCTL_LCR:       /* link credit reset */
+        case FC_RCTL_END:       /* end */
+                break;
+        case FC_RCTL_VFTH:      /* Virtual Fabric tagging Header */
+                fc_vft_hdr = (struct fc_vft_header *)fc_hdr;
+                fc_hdr = &((struct fc_frame_header *)fc_vft_hdr)[1];
+                return lpfc_fc_frame_check(phba, fc_hdr);
+        default:
+                goto drop;
+        }
+        switch (fc_hdr->fh_type) {
+        case FC_TYPE_BLS:
+        case FC_TYPE_ELS:
+        case FC_TYPE_FCP:
+        case FC_TYPE_CT:
+                break;
+        case FC_TYPE_IP:
+        case FC_TYPE_ILS:
+        default:
+                goto drop;
+        }
+        lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
+                        "2538 Received frame rctl:%s type:%s\n",
+                        rctl_names[fc_hdr->fh_r_ctl],
+                        type_names[fc_hdr->fh_type]);
+        return 0;
+drop:
+        lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
+                        "2539 Dropped frame rctl:%s type:%s\n",
+                        rctl_names[fc_hdr->fh_r_ctl],
+                        type_names[fc_hdr->fh_type]);
+        return 1;
+}
+
+/**
+ * lpfc_fc_hdr_get_vfi - Get the VFI from an FC frame
+ * @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
+ *
+ * This function processes the FC header to retrieve the VFI from the VF
+ * header, if one exists. This function will return the VFI if one exists
+ * or 0 if no VSAN Header exists.
+ **/
+static uint32_t
+lpfc_fc_hdr_get_vfi(struct fc_frame_header *fc_hdr)
+{
+        struct fc_vft_header *fc_vft_hdr = (struct fc_vft_header *)fc_hdr;
+
+        if (fc_hdr->fh_r_ctl != FC_RCTL_VFTH)
+                return 0;
+        return bf_get(fc_vft_hdr_vf_id, fc_vft_hdr);
+}
+
+/**
+ * lpfc_fc_frame_to_vport - Finds the vport that a frame is destined to
+ * @phba: Pointer to the HBA structure to search for the vport on
+ * @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
+ * @fcfi: The FC Fabric ID that the frame came from
+ *
+ * This function searches the @phba for a vport that matches the content of the
+ * @fc_hdr passed in and the @fcfi. This function uses the @fc_hdr to fetch the
+ * VFI, if the Virtual Fabric Tagging Header exists, and the DID. This function
+ * returns the matching vport pointer or NULL if unable to match frame to a
+ * vport.
+ **/
+static struct lpfc_vport *
+lpfc_fc_frame_to_vport(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr,
+                       uint16_t fcfi)
+{
+        struct lpfc_vport **vports;
+        struct lpfc_vport *vport = NULL;
+        int i;
+        uint32_t did = (fc_hdr->fh_d_id[0] << 16 |
+                        fc_hdr->fh_d_id[1] << 8 |
+                        fc_hdr->fh_d_id[2]);
+
+        vports = lpfc_create_vport_work_array(phba);
+        if (vports != NULL)
+                for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
+                        if (phba->fcf.fcfi == fcfi &&
+                            vports[i]->vfi == lpfc_fc_hdr_get_vfi(fc_hdr) &&
+                            vports[i]->fc_myDID == did) {
+                                vport = vports[i];
+                                break;
+                        }
+                }
+        lpfc_destroy_vport_work_array(phba, vports);
+        return vport;
+}
+
+/**
+ * lpfc_fc_frame_add - Adds a frame to the vport's list of received sequences
+ * @dmabuf: pointer to a dmabuf that describes the hdr and data of the FC frame
+ *
+ * This function searches through the existing incomplete sequences that have
+ * been sent to this @vport. If the frame matches one of the incomplete
+ * sequences then the dbuf in the @dmabuf is added to the list of frames that
+ * make up that sequence. If no sequence is found that matches this frame then
+ * the function will add the hbuf in the @dmabuf to the @vport's rcv_buffer_list
+ * This function returns a pointer to the first dmabuf in the sequence list that
+ * the frame was linked to.
+ **/
+static struct hbq_dmabuf *
+lpfc_fc_frame_add(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf)
+{
+        struct fc_frame_header *new_hdr;
+        struct fc_frame_header *temp_hdr;
+        struct lpfc_dmabuf *d_buf;
+        struct lpfc_dmabuf *h_buf;
+        struct hbq_dmabuf *seq_dmabuf = NULL;
+        struct hbq_dmabuf *temp_dmabuf = NULL;
+
+        new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
+        /* Use the hdr_buf to find the sequence that this frame belongs to */
+        list_for_each_entry(h_buf, &vport->rcv_buffer_list, list) {
+                temp_hdr = (struct fc_frame_header *)h_buf->virt;
+                if ((temp_hdr->fh_seq_id != new_hdr->fh_seq_id) ||
+                    (temp_hdr->fh_ox_id != new_hdr->fh_ox_id) ||
+                    (memcmp(&temp_hdr->fh_s_id, &new_hdr->fh_s_id, 3)))
+                        continue;
+                /* found a pending sequence that matches this frame */
+                seq_dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
+                break;
+        }
+        if (!seq_dmabuf) {
+                /*
+                 * This indicates first frame received for this sequence.
+                 * Queue the buffer on the vport's rcv_buffer_list.
+                 */
+                list_add_tail(&dmabuf->hbuf.list, &vport->rcv_buffer_list);
+                return dmabuf;
+        }
+        temp_hdr = seq_dmabuf->hbuf.virt;
+        if (new_hdr->fh_seq_cnt < temp_hdr->fh_seq_cnt) {
+                list_add(&seq_dmabuf->dbuf.list, &dmabuf->dbuf.list);
+                return dmabuf;
+        }
+        /* find the correct place in the sequence to insert this frame */
+        list_for_each_entry_reverse(d_buf, &seq_dmabuf->dbuf.list, list) {
+                temp_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
+                temp_hdr = (struct fc_frame_header *)temp_dmabuf->hbuf.virt;
+                /*
+                 * If the frame's sequence count is greater than the frame on
+                 * the list then insert the frame right after this frame
+                 */
+                if (new_hdr->fh_seq_cnt > temp_hdr->fh_seq_cnt) {
+                        list_add(&dmabuf->dbuf.list, &temp_dmabuf->dbuf.list);
+                        return seq_dmabuf;
+                }
+        }
+        return NULL;
+}
+
+/**
+ * lpfc_seq_complete - Indicates if a sequence is complete
+ * @dmabuf: pointer to a dmabuf that describes the FC sequence
+ *
+ * This function checks the sequence, starting with the frame described by
+ * @dmabuf, to see if all the frames associated with this sequence are present.
+ * the frames associated with this sequence are linked to the @dmabuf using the
+ * dbuf list. This function looks for two major things. 1) That the first frame
+ * has a sequence count of zero. 2) There is a frame with last frame of sequence
+ * set. 3) That there are no holes in the sequence count. The function will
+ * return 1 when the sequence is complete, otherwise it will return 0.
+ **/
+static int
+lpfc_seq_complete(struct hbq_dmabuf *dmabuf)
+{
+        struct fc_frame_header *hdr;
+        struct lpfc_dmabuf *d_buf;
+        struct hbq_dmabuf *seq_dmabuf;
+        uint32_t fctl;
+        int seq_count = 0;
+
+        hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
+        /* make sure first fame of sequence has a sequence count of zero */
+        if (hdr->fh_seq_cnt != seq_count)
+                return 0;
+        fctl = (hdr->fh_f_ctl[0] << 16 |
+                hdr->fh_f_ctl[1] << 8 |
+                hdr->fh_f_ctl[2]);
+        /* If last frame of sequence we can return success. */
+        if (fctl & FC_FC_END_SEQ)
+                return 1;
+        list_for_each_entry(d_buf, &dmabuf->dbuf.list, list) {
+                seq_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
+                hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
+                /* If there is a hole in the sequence count then fail. */
+                if (++seq_count != hdr->fh_seq_cnt)
+                        return 0;
+                fctl = (hdr->fh_f_ctl[0] << 16 |
+                        hdr->fh_f_ctl[1] << 8 |
+                        hdr->fh_f_ctl[2]);
+                /* If last frame of sequence we can return success. */
+                if (fctl & FC_FC_END_SEQ)
+                        return 1;
+        }
+        return 0;
+}
+
+/**
+ * lpfc_prep_seq - Prep sequence for ULP processing
+ * @vport: Pointer to the vport on which this sequence was received
+ * @dmabuf: pointer to a dmabuf that describes the FC sequence
+ *
+ * This function takes a sequence, described by a list of frames, and creates
+ * a list of iocbq structures to describe the sequence. This iocbq list will be
+ * used to issue to the generic unsolicited sequence handler. This routine
+ * returns a pointer to the first iocbq in the list. If the function is unable
+ * to allocate an iocbq then it throw out the received frames that were not
+ * able to be described and return a pointer to the first iocbq. If unable to
+ * allocate any iocbqs (including the first) this function will return NULL.
+ **/
+static struct lpfc_iocbq *
+lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf)
+{
+        struct lpfc_dmabuf *d_buf, *n_buf;
+        struct lpfc_iocbq *first_iocbq, *iocbq;
+        struct fc_frame_header *fc_hdr;
+        uint32_t sid;
+
+        fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
+        /* remove from receive buffer list */
+        list_del_init(&seq_dmabuf->hbuf.list);
+        /* get the Remote Port's SID */
+        sid = (fc_hdr->fh_s_id[0] << 16 |
+               fc_hdr->fh_s_id[1] << 8 |
+               fc_hdr->fh_s_id[2]);
+        /* Get an iocbq struct to fill in. */
+        first_iocbq = lpfc_sli_get_iocbq(vport->phba);
+        if (first_iocbq) {
+                /* Initialize the first IOCB. */
+                first_iocbq->iocb.ulpStatus = IOSTAT_SUCCESS;
+                first_iocbq->iocb.ulpCommand = CMD_IOCB_RCV_SEQ64_CX;
+                first_iocbq->iocb.ulpContext = be16_to_cpu(fc_hdr->fh_ox_id);
+                first_iocbq->iocb.unsli3.rcvsli3.vpi =
+                                        vport->vpi + vport->phba->vpi_base;
+                /* put the first buffer into the first IOCBq */
+                first_iocbq->context2 = &seq_dmabuf->dbuf;
+                first_iocbq->context3 = NULL;
+                first_iocbq->iocb.ulpBdeCount = 1;
+                first_iocbq->iocb.un.cont64[0].tus.f.bdeSize =
+                                                        LPFC_DATA_BUF_SIZE;
+                first_iocbq->iocb.un.rcvels.remoteID = sid;
+        }
+        iocbq = first_iocbq;
+        /*
+         * Each IOCBq can have two Buffers assigned, so go through the list
+         * of buffers for this sequence and save two buffers in each IOCBq
+         */
+        list_for_each_entry_safe(d_buf, n_buf, &seq_dmabuf->dbuf.list, list) {
+                if (!iocbq) {
+                        lpfc_in_buf_free(vport->phba, d_buf);
+                        continue;
+                }
+                if (!iocbq->context3) {
+                        iocbq->context3 = d_buf;
+                        iocbq->iocb.ulpBdeCount++;
+                        iocbq->iocb.unsli3.rcvsli3.bde2.tus.f.bdeSize =
+                                                        LPFC_DATA_BUF_SIZE;
+                } else {
+                        iocbq = lpfc_sli_get_iocbq(vport->phba);
+                        if (!iocbq) {
+                                if (first_iocbq) {
+                                        first_iocbq->iocb.ulpStatus =
+                                                        IOSTAT_FCP_RSP_ERROR;
+                                        first_iocbq->iocb.un.ulpWord[4] =
+                                                        IOERR_NO_RESOURCES;
+                                }
+                                lpfc_in_buf_free(vport->phba, d_buf);
+                                continue;
+                        }
+                        iocbq->context2 = d_buf;
+                        iocbq->context3 = NULL;
+                        iocbq->iocb.ulpBdeCount = 1;
+                        iocbq->iocb.un.cont64[0].tus.f.bdeSize =
+                                                        LPFC_DATA_BUF_SIZE;
+                        iocbq->iocb.un.rcvels.remoteID = sid;
+                        list_add_tail(&iocbq->list, &first_iocbq->list);
+                }
+        }
+        return first_iocbq;
+}
+
+/**
+ * lpfc_sli4_handle_received_buffer - Handle received buffers from firmware
+ * @phba: Pointer to HBA context object.
+ *
+ * This function is called with no lock held. This function processes all
+ * the received buffers and gives it to upper layers when a received buffer
+ * indicates that it is the final frame in the sequence. The interrupt
+ * service routine processes received buffers at interrupt contexts and adds
+ * received dma buffers to the rb_pend_list queue and signals the worker thread.
+ * Worker thread calls lpfc_sli4_handle_received_buffer, which will call the
+ * appropriate receive function when the final frame in a sequence is received.
+ **/
+int
+lpfc_sli4_handle_received_buffer(struct lpfc_hba *phba)
+{
+        LIST_HEAD(cmplq);
+        struct hbq_dmabuf *dmabuf, *seq_dmabuf;
+        struct fc_frame_header *fc_hdr;
+        struct lpfc_vport *vport;
+        uint32_t fcfi;
+        struct lpfc_iocbq *iocbq;
+
+        /* Clear hba flag and get all received buffers into the cmplq */
+        spin_lock_irq(&phba->hbalock);
+        phba->hba_flag &= ~HBA_RECEIVE_BUFFER;
+        list_splice_init(&phba->rb_pend_list, &cmplq);
+        spin_unlock_irq(&phba->hbalock);
+
+        /* Process each received buffer */
+        while ((dmabuf = lpfc_sli_hbqbuf_get(&cmplq)) != NULL) {
+                fc_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
+                /* check to see if this a valid type of frame */
+                if (lpfc_fc_frame_check(phba, fc_hdr)) {
+                        lpfc_in_buf_free(phba, &dmabuf->dbuf);
+                        continue;
+                }
+                fcfi = bf_get(lpfc_rcqe_fcf_id, &dmabuf->rcqe);
+                vport = lpfc_fc_frame_to_vport(phba, fc_hdr, fcfi);
+                if (!vport) {
+                        /* throw out the frame */
+                        lpfc_in_buf_free(phba, &dmabuf->dbuf);
+                        continue;
+                }
+                /* Link this frame */
+                seq_dmabuf = lpfc_fc_frame_add(vport, dmabuf);
+                if (!seq_dmabuf) {
+                        /* unable to add frame to vport - throw it out */
+                        lpfc_in_buf_free(phba, &dmabuf->dbuf);
+                        continue;
+                }
+                /* If not last frame in sequence continue processing frames. */
+                if (!lpfc_seq_complete(seq_dmabuf)) {
+                        /*
+                         * When saving off frames post a new one and mark this
+                         * frame to be freed when it is finished.
+                         **/
+                        lpfc_sli_hbqbuf_fill_hbqs(phba, LPFC_ELS_HBQ, 1);
+                        dmabuf->tag = -1;
+                        continue;
+                }
+                fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
+                iocbq = lpfc_prep_seq(vport, seq_dmabuf);
+                if (!lpfc_complete_unsol_iocb(phba,
+                                              &phba->sli.ring[LPFC_ELS_RING],
+                                              iocbq, fc_hdr->fh_r_ctl,
+                                              fc_hdr->fh_type))
+                        lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
+                                        "2540 Ring %d handler: unexpected Rctl "
+                                        "x%x Type x%x received\n",
+                                        LPFC_ELS_RING,
+                                        fc_hdr->fh_r_ctl, fc_hdr->fh_type);
+        };
+        return 0;
+}
+
+/**
+ * lpfc_sli4_post_all_rpi_hdrs - Post the rpi header memory region to the port
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is invoked to post rpi header templates to the
+ * HBA consistent with the SLI-4 interface spec.  This routine
+ * posts a PAGE_SIZE memory region to the port to hold up to
+ * PAGE_SIZE modulo 64 rpi context headers.
+ *
+ * This routine does not require any locks.  It's usage is expected
+ * to be driver load or reset recovery when the driver is
+ * sequential.
+ *
+ * Return codes
+ *      0 - sucessful
+ *      EIO - The mailbox failed to complete successfully.
+ *      When this error occurs, the driver is not guaranteed
+ *      to have any rpi regions posted to the device and
+ *      must either attempt to repost the regions or take a
+ *      fatal error.
+ **/
+int
+lpfc_sli4_post_all_rpi_hdrs(struct lpfc_hba *phba)
+{
+        struct lpfc_rpi_hdr *rpi_page;
+        uint32_t rc = 0;
+
+        /* Post all rpi memory regions to the port. */
+        list_for_each_entry(rpi_page, &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
+                rc = lpfc_sli4_post_rpi_hdr(phba, rpi_page);
+                if (rc != MBX_SUCCESS) {
+                        lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                        "2008 Error %d posting all rpi "
+                                        "headers\n", rc);
+                        rc = -EIO;
+                        break;
+                }
+        }
+
+        return rc;
+}
+
+/**
+ * lpfc_sli4_post_rpi_hdr - Post an rpi header memory region to the port
+ * @phba: pointer to lpfc hba data structure.
+ * @rpi_page:  pointer to the rpi memory region.
+ *
+ * This routine is invoked to post a single rpi header to the
+ * HBA consistent with the SLI-4 interface spec.  This memory region
+ * maps up to 64 rpi context regions.
+ *
+ * Return codes
+ *      0 - sucessful
+ *      ENOMEM - No available memory
+ *      EIO - The mailbox failed to complete successfully.
+ **/
+int
+lpfc_sli4_post_rpi_hdr(struct lpfc_hba *phba, struct lpfc_rpi_hdr *rpi_page)
+{
+        LPFC_MBOXQ_t *mboxq;
+        struct lpfc_mbx_post_hdr_tmpl *hdr_tmpl;
+        uint32_t rc = 0;
+        uint32_t mbox_tmo;
+        uint32_t shdr_status, shdr_add_status;
+        union lpfc_sli4_cfg_shdr *shdr;
+
+        /* The port is notified of the header region via a mailbox command. */
+        mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mboxq) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "2001 Unable to allocate memory for issuing "
+                                "SLI_CONFIG_SPECIAL mailbox command\n");
+                return -ENOMEM;
+        }
+
+        /* Post all rpi memory regions to the port. */
+        hdr_tmpl = &mboxq->u.mqe.un.hdr_tmpl;
+        mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
+        lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
+                         LPFC_MBOX_OPCODE_FCOE_POST_HDR_TEMPLATE,
+                         sizeof(struct lpfc_mbx_post_hdr_tmpl) -
+                         sizeof(struct mbox_header), LPFC_SLI4_MBX_EMBED);
+        bf_set(lpfc_mbx_post_hdr_tmpl_page_cnt,
+               hdr_tmpl, rpi_page->page_count);
+        bf_set(lpfc_mbx_post_hdr_tmpl_rpi_offset, hdr_tmpl,
+               rpi_page->start_rpi);
+        hdr_tmpl->rpi_paddr_lo = putPaddrLow(rpi_page->dmabuf->phys);
+        hdr_tmpl->rpi_paddr_hi = putPaddrHigh(rpi_page->dmabuf->phys);
+        rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
+        shdr = (union lpfc_sli4_cfg_shdr *) &hdr_tmpl->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 (rc != MBX_TIMEOUT)
+                mempool_free(mboxq, phba->mbox_mem_pool);
+        if (shdr_status || shdr_add_status || rc) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "2514 POST_RPI_HDR mailbox failed with "
+                                "status x%x add_status x%x, mbx status x%x\n",
+                                shdr_status, shdr_add_status, rc);
+                rc = -ENXIO;
+        }
+        return rc;
+}
+
+/**
+ * lpfc_sli4_alloc_rpi - Get an available rpi in the device's range
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is invoked to post rpi header templates to the
+ * HBA consistent with the SLI-4 interface spec.  This routine
+ * posts a PAGE_SIZE memory region to the port to hold up to
+ * PAGE_SIZE modulo 64 rpi context headers.
+ *
+ * Returns
+ *      A nonzero rpi defined as rpi_base <= rpi < max_rpi if sucessful
+ *      LPFC_RPI_ALLOC_ERROR if no rpis are available.
+ **/
+int
+lpfc_sli4_alloc_rpi(struct lpfc_hba *phba)
+{
+        int rpi;
+        uint16_t max_rpi, rpi_base, rpi_limit;
+        uint16_t rpi_remaining;
+        struct lpfc_rpi_hdr *rpi_hdr;
+
+        max_rpi = phba->sli4_hba.max_cfg_param.max_rpi;
+        rpi_base = phba->sli4_hba.max_cfg_param.rpi_base;
+        rpi_limit = phba->sli4_hba.next_rpi;
+
+        /*
+         * The valid rpi range is not guaranteed to be zero-based.  Start
+         * the search at the rpi_base as reported by the port.
+         */
+        spin_lock_irq(&phba->hbalock);
+        rpi = find_next_zero_bit(phba->sli4_hba.rpi_bmask, rpi_limit, rpi_base);
+        if (rpi >= rpi_limit || rpi < rpi_base)
+                rpi = LPFC_RPI_ALLOC_ERROR;
+        else {
+                set_bit(rpi, phba->sli4_hba.rpi_bmask);
+                phba->sli4_hba.max_cfg_param.rpi_used++;
+                phba->sli4_hba.rpi_count++;
+        }
+
+        /*
+         * Don't try to allocate more rpi header regions if the device limit
+         * on available rpis max has been exhausted.
+         */
+        if ((rpi == LPFC_RPI_ALLOC_ERROR) &&
+            (phba->sli4_hba.rpi_count >= max_rpi)) {
+                spin_unlock_irq(&phba->hbalock);
+                return rpi;
+        }
+
+        /*
+         * If the driver is running low on rpi resources, allocate another
+         * page now.  Note that the next_rpi value is used because
+         * it represents how many are actually in use whereas max_rpi notes
+         * how many are supported max by the device.
+         */
+        rpi_remaining = phba->sli4_hba.next_rpi - rpi_base -
+                phba->sli4_hba.rpi_count;
+        spin_unlock_irq(&phba->hbalock);
+        if (rpi_remaining < LPFC_RPI_LOW_WATER_MARK) {
+                rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
+                if (!rpi_hdr) {
+                        lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                        "2002 Error Could not grow rpi "
+                                        "count\n");
+                } else {
+                        lpfc_sli4_post_rpi_hdr(phba, rpi_hdr);
+                }
+        }
+
+        return rpi;
+}
+
+/**
+ * lpfc_sli4_free_rpi - Release an rpi for reuse.
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is invoked to release an rpi to the pool of
+ * available rpis maintained by the driver.
+ **/
+void
+lpfc_sli4_free_rpi(struct lpfc_hba *phba, int rpi)
+{
+        spin_lock_irq(&phba->hbalock);
+        clear_bit(rpi, phba->sli4_hba.rpi_bmask);
+        phba->sli4_hba.rpi_count--;
+        phba->sli4_hba.max_cfg_param.rpi_used--;
+        spin_unlock_irq(&phba->hbalock);
+}
+
+/**
+ * lpfc_sli4_remove_rpis - Remove the rpi bitmask region
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is invoked to remove the memory region that
+ * provided rpi via a bitmask.
+ **/
+void
+lpfc_sli4_remove_rpis(struct lpfc_hba *phba)
+{
+        kfree(phba->sli4_hba.rpi_bmask);
+}
+
+/**
+ * lpfc_sli4_resume_rpi - Remove the rpi bitmask region
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine is invoked to remove the memory region that
+ * provided rpi via a bitmask.
+ **/
+int
+lpfc_sli4_resume_rpi(struct lpfc_nodelist *ndlp)
+{
+        LPFC_MBOXQ_t *mboxq;
+        struct lpfc_hba *phba = ndlp->phba;
+        int rc;
+
+        /* The port is notified of the header region via a mailbox command. */
+        mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mboxq)
+                return -ENOMEM;
+
+        /* Post all rpi memory regions to the port. */
+        lpfc_resume_rpi(mboxq, ndlp);
+        rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
+        if (rc == MBX_NOT_FINISHED) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "2010 Resume RPI Mailbox failed "
+                                "status %d, mbxStatus x%x\n", rc,
+                                bf_get(lpfc_mqe_status, &mboxq->u.mqe));
+                mempool_free(mboxq, phba->mbox_mem_pool);
+                return -EIO;
+        }
+        return 0;
+}
+
+/**
+ * lpfc_sli4_init_vpi - Initialize a vpi with the port
+ * @phba: pointer to lpfc hba data structure.
+ * @vpi: vpi value to activate with the port.
+ *
+ * This routine is invoked to activate a vpi with the
+ * port when the host intends to use vports with a
+ * nonzero vpi.
+ *
+ * Returns:
+ *    0 success
+ *    -Evalue otherwise
+ **/
+int
+lpfc_sli4_init_vpi(struct lpfc_hba *phba, uint16_t vpi)
+{
+        LPFC_MBOXQ_t *mboxq;
+        int rc = 0;
+        uint32_t mbox_tmo;
+
+        if (vpi == 0)
+                return -EINVAL;
+        mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mboxq)
+                return -ENOMEM;
+        lpfc_init_vpi(mboxq, vpi);
+        mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_INIT_VPI);
+        rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
+        if (rc != MBX_TIMEOUT)
+                mempool_free(mboxq, phba->mbox_mem_pool);
+        if (rc != MBX_SUCCESS) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+                                "2022 INIT VPI Mailbox failed "
+                                "status %d, mbxStatus x%x\n", rc,
+                                bf_get(lpfc_mqe_status, &mboxq->u.mqe));
+                rc = -EIO;
+        }
+        return rc;
+}
+
+/**
+ * lpfc_mbx_cmpl_add_fcf_record - add fcf mbox completion handler.
+ * @phba: pointer to lpfc hba data structure.
+ * @mboxq: Pointer to mailbox object.
+ *
+ * This routine is invoked to manually add a single FCF record. The caller
+ * must pass a completely initialized FCF_Record.  This routine takes
+ * care of the nonembedded mailbox operations.
+ **/
+static void
+lpfc_mbx_cmpl_add_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
+{
+        void *virt_addr;
+        union lpfc_sli4_cfg_shdr *shdr;
+        uint32_t shdr_status, shdr_add_status;
+
+        virt_addr = mboxq->sge_array->addr[0];
+        /* The IOCTL status is embedded in the mailbox subheader. */
+        shdr = (union lpfc_sli4_cfg_shdr *) virt_addr;
+        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) &&
+                (shdr_status != STATUS_FCF_IN_USE))
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                        "2558 ADD_FCF_RECORD mailbox failed with "
+                        "status x%x add_status x%x\n",
+                        shdr_status, shdr_add_status);
+
+        lpfc_sli4_mbox_cmd_free(phba, mboxq);
+}
+
+/**
+ * lpfc_sli4_add_fcf_record - Manually add an FCF Record.
+ * @phba: pointer to lpfc hba data structure.
+ * @fcf_record:  pointer to the initialized fcf record to add.
+ *
+ * This routine is invoked to manually add a single FCF record. The caller
+ * must pass a completely initialized FCF_Record.  This routine takes
+ * care of the nonembedded mailbox operations.
+ **/
+int
+lpfc_sli4_add_fcf_record(struct lpfc_hba *phba, struct fcf_record *fcf_record)
+{
+        int rc = 0;
+        LPFC_MBOXQ_t *mboxq;
+        uint8_t *bytep;
+        void *virt_addr;
+        dma_addr_t phys_addr;
+        struct lpfc_mbx_sge sge;
+        uint32_t alloc_len, req_len;
+        uint32_t fcfindex;
+
+        mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mboxq) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                        "2009 Failed to allocate mbox for ADD_FCF cmd\n");
+                return -ENOMEM;
+        }
+
+        req_len = sizeof(struct fcf_record) + sizeof(union lpfc_sli4_cfg_shdr) +
+                  sizeof(uint32_t);
+
+        /* Allocate DMA memory and set up the non-embedded mailbox command */
+        alloc_len = lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
+                                     LPFC_MBOX_OPCODE_FCOE_ADD_FCF,
+                                     req_len, LPFC_SLI4_MBX_NEMBED);
+        if (alloc_len < req_len) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                        "2523 Allocated DMA memory size (x%x) is "
+                        "less than the requested DMA memory "
+                        "size (x%x)\n", alloc_len, req_len);
+                lpfc_sli4_mbox_cmd_free(phba, mboxq);
+                return -ENOMEM;
+        }
+
+        /*
+         * Get the first SGE entry from the non-embedded DMA memory.  This
+         * routine only uses a single SGE.
+         */
+        lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
+        phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
+        if (unlikely(!mboxq->sge_array)) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
+                                "2526 Failed to get the non-embedded SGE "
+                                "virtual address\n");
+                lpfc_sli4_mbox_cmd_free(phba, mboxq);
+                return -ENOMEM;
+        }
+        virt_addr = mboxq->sge_array->addr[0];
+        /*
+         * Configure the FCF record for FCFI 0.  This is the driver's
+         * hardcoded default and gets used in nonFIP mode.
+         */
+        fcfindex = bf_get(lpfc_fcf_record_fcf_index, fcf_record);
+        bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr);
+        lpfc_sli_pcimem_bcopy(&fcfindex, bytep, sizeof(uint32_t));
+
+        /*
+         * Copy the fcf_index and the FCF Record Data. The data starts after
+         * the FCoE header plus word10. The data copy needs to be endian
+         * correct.
+         */
+        bytep += sizeof(uint32_t);
+        lpfc_sli_pcimem_bcopy(fcf_record, bytep, sizeof(struct fcf_record));
+        mboxq->vport = phba->pport;
+        mboxq->mbox_cmpl = lpfc_mbx_cmpl_add_fcf_record;
+        rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
+        if (rc == MBX_NOT_FINISHED) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                        "2515 ADD_FCF_RECORD mailbox failed with "
+                        "status 0x%x\n", rc);
+                lpfc_sli4_mbox_cmd_free(phba, mboxq);
+                rc = -EIO;
+        } else
+                rc = 0;
+
+        return rc;
+}
+
+/**
+ * lpfc_sli4_build_dflt_fcf_record - Build the driver's default FCF Record.
+ * @phba: pointer to lpfc hba data structure.
+ * @fcf_record:  pointer to the fcf record to write the default data.
+ * @fcf_index: FCF table entry index.
+ *
+ * This routine is invoked to build the driver's default FCF record.  The
+ * values used are hardcoded.  This routine handles memory initialization.
+ *
+ **/
+void
+lpfc_sli4_build_dflt_fcf_record(struct lpfc_hba *phba,
+                                struct fcf_record *fcf_record,
+                                uint16_t fcf_index)
+{
+        memset(fcf_record, 0, sizeof(struct fcf_record));
+        fcf_record->max_rcv_size = LPFC_FCOE_MAX_RCV_SIZE;
+        fcf_record->fka_adv_period = LPFC_FCOE_FKA_ADV_PER;
+        fcf_record->fip_priority = LPFC_FCOE_FIP_PRIORITY;
+        bf_set(lpfc_fcf_record_mac_0, fcf_record, phba->fc_map[0]);
+        bf_set(lpfc_fcf_record_mac_1, fcf_record, phba->fc_map[1]);
+        bf_set(lpfc_fcf_record_mac_2, fcf_record, phba->fc_map[2]);
+        bf_set(lpfc_fcf_record_mac_3, fcf_record, LPFC_FCOE_FCF_MAC3);
+        bf_set(lpfc_fcf_record_mac_4, fcf_record, LPFC_FCOE_FCF_MAC4);
+        bf_set(lpfc_fcf_record_mac_5, fcf_record, LPFC_FCOE_FCF_MAC5);
+        bf_set(lpfc_fcf_record_fc_map_0, fcf_record, phba->fc_map[0]);
+        bf_set(lpfc_fcf_record_fc_map_1, fcf_record, phba->fc_map[1]);
+        bf_set(lpfc_fcf_record_fc_map_2, fcf_record, phba->fc_map[2]);
+        bf_set(lpfc_fcf_record_fcf_valid, fcf_record, 1);
+        bf_set(lpfc_fcf_record_fcf_avail, fcf_record, 1);
+        bf_set(lpfc_fcf_record_fcf_index, fcf_record, fcf_index);
+        bf_set(lpfc_fcf_record_mac_addr_prov, fcf_record,
+                LPFC_FCF_FPMA | LPFC_FCF_SPMA);
+        /* Set the VLAN bit map */
+        if (phba->valid_vlan) {
+                fcf_record->vlan_bitmap[phba->vlan_id / 8]
+                        = 1 << (phba->vlan_id % 8);
+        }
+}
+
+/**
+ * lpfc_sli4_read_fcf_record - Read the driver's default FCF Record.
+ * @phba: pointer to lpfc hba data structure.
+ * @fcf_index: FCF table entry offset.
+ *
+ * This routine is invoked to read up to @fcf_num of FCF record from the
+ * device starting with the given @fcf_index.
+ **/
+int
+lpfc_sli4_read_fcf_record(struct lpfc_hba *phba, uint16_t fcf_index)
+{
+        int rc = 0, error;
+        LPFC_MBOXQ_t *mboxq;
+        void *virt_addr;
+        dma_addr_t phys_addr;
+        uint8_t *bytep;
+        struct lpfc_mbx_sge sge;
+        uint32_t alloc_len, req_len;
+        struct lpfc_mbx_read_fcf_tbl *read_fcf;
+
+        mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        if (!mboxq) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "2000 Failed to allocate mbox for "
+                                "READ_FCF cmd\n");
+                return -ENOMEM;
+        }
+
+        req_len = sizeof(struct fcf_record) +
+                  sizeof(union lpfc_sli4_cfg_shdr) + 2 * sizeof(uint32_t);
+
+        /* Set up READ_FCF SLI4_CONFIG mailbox-ioctl command */
+        alloc_len = lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
+                         LPFC_MBOX_OPCODE_FCOE_READ_FCF_TABLE, req_len,
+                         LPFC_SLI4_MBX_NEMBED);
+
+        if (alloc_len < req_len) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                "0291 Allocated DMA memory size (x%x) is "
+                                "less than the requested DMA memory "
+                                "size (x%x)\n", alloc_len, req_len);
+                lpfc_sli4_mbox_cmd_free(phba, mboxq);
+                return -ENOMEM;
+        }
+
+        /* Get the first SGE entry from the non-embedded DMA memory. This
+         * routine only uses a single SGE.
+         */
+        lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
+        phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
+        if (unlikely(!mboxq->sge_array)) {
+                lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
+                                "2527 Failed to get the non-embedded SGE "
+                                "virtual address\n");
+                lpfc_sli4_mbox_cmd_free(phba, mboxq);
+                return -ENOMEM;
+        }
+        virt_addr = mboxq->sge_array->addr[0];
+        read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
+
+        /* Set up command fields */
+        bf_set(lpfc_mbx_read_fcf_tbl_indx, &read_fcf->u.request, fcf_index);
+        /* Perform necessary endian conversion */
+        bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr);
+        lpfc_sli_pcimem_bcopy(bytep, bytep, sizeof(uint32_t));
+        mboxq->vport = phba->pport;
+        mboxq->mbox_cmpl = lpfc_mbx_cmpl_read_fcf_record;
+        rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
+        if (rc == MBX_NOT_FINISHED) {
+                lpfc_sli4_mbox_cmd_free(phba, mboxq);
+                error = -EIO;
+        } else
+                error = 0;
+        return error;
+}