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	Version: linux-6.0.1 spark-3.0.0 hadoop-3.2.0-src hadoop-3.3.0-src spark-2.4.7 linux-4.15.13 hadoop-2.7.4-src Revert   Change

 /*******************************************************************
  * This file is part of the Emulex Linux Device Driver for         *
  * Fibre Channel Host Bus Adapters.                                *
  * Copyright (C) 2017-2022 Broadcom. All Rights Reserved. The term *
  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
  * EMULEX and SLI are trademarks of Emulex.                        *
  * www.broadcom.com                                                *
  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  *                                                                 *
  * This program is free software; you can redistribute it and/or   *
  * modify it under the terms of version 2 of the GNU General       *
  * Public License as published by the Free Software Foundation.    *
  * This program is distributed in the hope that it will be useful. *
  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  * more details, a copy of which can be found in the file COPYING  *
  * included with this package.                                     *
  *******************************************************************/
 
 #include <linux/blkdev.h>
 #include <linux/pci.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/lockdep.h>
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_device.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_transport_fc.h>
 #include <scsi/fc/fc_fs.h>
 #include <linux/aer.h>
 #include <linux/crash_dump.h>
 #ifdef CONFIG_X86
 #include <asm/set_memory.h>
 #endif
 
 #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.h"
 #include "lpfc_scsi.h"
 #include "lpfc_nvme.h"
 #include "lpfc_crtn.h"
 #include "lpfc_logmsg.h"
 #include "lpfc_compat.h"
 #include "lpfc_debugfs.h"
 #include "lpfc_vport.h"
 #include "lpfc_version.h"
 
 /* There are only four IOCB completion types. */
 typedef enum _lpfc_iocb_type {
     LPFC_UNKNOWN_IOCB,
     LPFC_UNSOL_IOCB,
     LPFC_SOL_IOCB,
     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 struct lpfc_iocbq *
 lpfc_sli4_els_preprocess_rspiocbq(struct lpfc_hba *phba,
                   struct lpfc_iocbq *rspiocbq);
 static void lpfc_sli4_send_seq_to_ulp(struct lpfc_vport *,
                       struct hbq_dmabuf *);
 static void lpfc_sli4_handle_mds_loopback(struct lpfc_vport *vport,
                       struct hbq_dmabuf *dmabuf);
 static bool lpfc_sli4_fp_handle_cqe(struct lpfc_hba *phba,
                    struct lpfc_queue *cq, struct lpfc_cqe *cqe);
 static int lpfc_sli4_post_sgl_list(struct lpfc_hba *, struct list_head *,
                        int);
 static void lpfc_sli4_hba_handle_eqe(struct lpfc_hba *phba,
                      struct lpfc_queue *eq,
                      struct lpfc_eqe *eqe);
 static bool lpfc_sli4_mbox_completions_pending(struct lpfc_hba *phba);
 static bool lpfc_sli4_process_missed_mbox_completions(struct lpfc_hba *phba);
 static struct lpfc_cqe *lpfc_sli4_cq_get(struct lpfc_queue *q);
 static void __lpfc_sli4_consume_cqe(struct lpfc_hba *phba,
                     struct lpfc_queue *cq,
                     struct lpfc_cqe *cqe);
 static uint16_t lpfc_wqe_bpl2sgl(struct lpfc_hba *phba,
                  struct lpfc_iocbq *pwqeq,
                  struct lpfc_sglq *sglq);
 
 union lpfc_wqe128 lpfc_iread_cmd_template;
 union lpfc_wqe128 lpfc_iwrite_cmd_template;
 union lpfc_wqe128 lpfc_icmnd_cmd_template;
 
 /* Setup WQE templates for IOs */
 void lpfc_wqe_cmd_template(void)
 {
     union lpfc_wqe128 *wqe;
 
     /* IREAD template */
     wqe = &lpfc_iread_cmd_template;
     memset(wqe, 0, sizeof(union lpfc_wqe128));
 
     /* Word 0, 1, 2 - BDE is variable */
 
     /* Word 3 - cmd_buff_len, payload_offset_len is zero */
 
     /* Word 4 - total_xfer_len is variable */
 
     /* Word 5 - is zero */
 
     /* Word 6 - ctxt_tag, xri_tag is variable */
 
     /* Word 7 */
     bf_set(wqe_cmnd, &wqe->fcp_iread.wqe_com, CMD_FCP_IREAD64_WQE);
     bf_set(wqe_pu, &wqe->fcp_iread.wqe_com, PARM_READ_CHECK);
     bf_set(wqe_class, &wqe->fcp_iread.wqe_com, CLASS3);
     bf_set(wqe_ct, &wqe->fcp_iread.wqe_com, SLI4_CT_RPI);
 
     /* Word 8 - abort_tag is variable */
 
     /* Word 9  - reqtag is variable */
 
     /* Word 10 - dbde, wqes is variable */
     bf_set(wqe_qosd, &wqe->fcp_iread.wqe_com, 0);
     bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, LPFC_WQE_IOD_READ);
     bf_set(wqe_lenloc, &wqe->fcp_iread.wqe_com, LPFC_WQE_LENLOC_WORD4);
     bf_set(wqe_dbde, &wqe->fcp_iread.wqe_com, 0);
     bf_set(wqe_wqes, &wqe->fcp_iread.wqe_com, 1);
 
     /* Word 11 - pbde is variable */
     bf_set(wqe_cmd_type, &wqe->fcp_iread.wqe_com, COMMAND_DATA_IN);
     bf_set(wqe_cqid, &wqe->fcp_iread.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
     bf_set(wqe_pbde, &wqe->fcp_iread.wqe_com, 0);
 
     /* Word 12 - is zero */
 
     /* Word 13, 14, 15 - PBDE is variable */
 
     /* IWRITE template */
     wqe = &lpfc_iwrite_cmd_template;
     memset(wqe, 0, sizeof(union lpfc_wqe128));
 
     /* Word 0, 1, 2 - BDE is variable */
 
     /* Word 3 - cmd_buff_len, payload_offset_len is zero */
 
     /* Word 4 - total_xfer_len is variable */
 
     /* Word 5 - initial_xfer_len is variable */
 
     /* Word 6 - ctxt_tag, xri_tag is variable */
 
     /* Word 7 */
     bf_set(wqe_cmnd, &wqe->fcp_iwrite.wqe_com, CMD_FCP_IWRITE64_WQE);
     bf_set(wqe_pu, &wqe->fcp_iwrite.wqe_com, PARM_READ_CHECK);
     bf_set(wqe_class, &wqe->fcp_iwrite.wqe_com, CLASS3);
     bf_set(wqe_ct, &wqe->fcp_iwrite.wqe_com, SLI4_CT_RPI);
 
     /* Word 8 - abort_tag is variable */
 
     /* Word 9  - reqtag is variable */
 
     /* Word 10 - dbde, wqes is variable */
     bf_set(wqe_qosd, &wqe->fcp_iwrite.wqe_com, 0);
     bf_set(wqe_iod, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_IOD_WRITE);
     bf_set(wqe_lenloc, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_LENLOC_WORD4);
     bf_set(wqe_dbde, &wqe->fcp_iwrite.wqe_com, 0);
     bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1);
 
     /* Word 11 - pbde is variable */
     bf_set(wqe_cmd_type, &wqe->fcp_iwrite.wqe_com, COMMAND_DATA_OUT);
     bf_set(wqe_cqid, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
     bf_set(wqe_pbde, &wqe->fcp_iwrite.wqe_com, 0);
 
     /* Word 12 - is zero */
 
     /* Word 13, 14, 15 - PBDE is variable */
 
     /* ICMND template */
     wqe = &lpfc_icmnd_cmd_template;
     memset(wqe, 0, sizeof(union lpfc_wqe128));
 
     /* Word 0, 1, 2 - BDE is variable */
 
     /* Word 3 - payload_offset_len is variable */
 
     /* Word 4, 5 - is zero */
 
     /* Word 6 - ctxt_tag, xri_tag is variable */
 
     /* Word 7 */
     bf_set(wqe_cmnd, &wqe->fcp_icmd.wqe_com, CMD_FCP_ICMND64_WQE);
     bf_set(wqe_pu, &wqe->fcp_icmd.wqe_com, 0);
     bf_set(wqe_class, &wqe->fcp_icmd.wqe_com, CLASS3);
     bf_set(wqe_ct, &wqe->fcp_icmd.wqe_com, SLI4_CT_RPI);
 
     /* Word 8 - abort_tag is variable */
 
     /* Word 9  - reqtag is variable */
 
     /* Word 10 - dbde, wqes is variable */
     bf_set(wqe_qosd, &wqe->fcp_icmd.wqe_com, 1);
     bf_set(wqe_iod, &wqe->fcp_icmd.wqe_com, LPFC_WQE_IOD_NONE);
     bf_set(wqe_lenloc, &wqe->fcp_icmd.wqe_com, LPFC_WQE_LENLOC_NONE);
     bf_set(wqe_dbde, &wqe->fcp_icmd.wqe_com, 0);
     bf_set(wqe_wqes, &wqe->fcp_icmd.wqe_com, 1);
 
     /* Word 11 */
     bf_set(wqe_cmd_type, &wqe->fcp_icmd.wqe_com, COMMAND_DATA_IN);
     bf_set(wqe_cqid, &wqe->fcp_icmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
     bf_set(wqe_pbde, &wqe->fcp_icmd.wqe_com, 0);
 
     /* Word 12, 13, 14, 15 - is zero */
 }
 
 #if defined(CONFIG_64BIT) && defined(__LITTLE_ENDIAN)
 /**
  * lpfc_sli4_pcimem_bcopy - SLI4 memory copy function
  * @srcp: Source memory pointer.
  * @destp: Destination memory pointer.
  * @cnt: Number of words required to be copied.
  *       Must be a multiple of sizeof(uint64_t)
  *
  * This function is used for copying data between driver memory
  * and the SLI WQ. This function also changes the endianness
  * of each word if native endianness is different from SLI
  * endianness. This function can be called with or without
  * lock.
  **/
 static void
 lpfc_sli4_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
 {
     uint64_t *src = srcp;
     uint64_t *dest = destp;
     int i;
 
     for (i = 0; i < (int)cnt; i += sizeof(uint64_t))
         *dest++ = *src++;
 }
 #else
 #define lpfc_sli4_pcimem_bcopy(a, b, c) lpfc_sli_pcimem_bcopy(a, b, c)
 #endif
 
 /**
  * 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 int
 lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe128 *wqe)
 {
     union lpfc_wqe *temp_wqe;
     struct lpfc_register doorbell;
     uint32_t host_index;
     uint32_t idx;
     uint32_t i = 0;
     uint8_t *tmp;
     u32 if_type;
 
     /* sanity check on queue memory */
     if (unlikely(!q))
         return -ENOMEM;
 
     temp_wqe = lpfc_sli4_qe(q, q->host_index);
 
     /* If the host has not yet processed the next entry then we are done */
     idx = ((q->host_index + 1) % q->entry_count);
     if (idx == q->hba_index) {
         q->WQ_overflow++;
         return -EBUSY;
     }
     q->WQ_posted++;
     /* set consumption flag every once in a while */
     if (!((q->host_index + 1) % q->notify_interval))
         bf_set(wqe_wqec, &wqe->generic.wqe_com, 1);
     else
         bf_set(wqe_wqec, &wqe->generic.wqe_com, 0);
     if (q->phba->sli3_options & LPFC_SLI4_PHWQ_ENABLED)
         bf_set(wqe_wqid, &wqe->generic.wqe_com, q->queue_id);
     lpfc_sli4_pcimem_bcopy(wqe, temp_wqe, q->entry_size);
     if (q->dpp_enable && q->phba->cfg_enable_dpp) {
         /* write to DPP aperture taking advatage of Combined Writes */
         tmp = (uint8_t *)temp_wqe;
 #ifdef __raw_writeq
         for (i = 0; i < q->entry_size; i += sizeof(uint64_t))
             __raw_writeq(*((uint64_t *)(tmp + i)),
                     q->dpp_regaddr + i);
 #else
         for (i = 0; i < q->entry_size; i += sizeof(uint32_t))
             __raw_writel(*((uint32_t *)(tmp + i)),
                     q->dpp_regaddr + i);
 #endif
     }
     /* ensure WQE bcopy and DPP flushed before doorbell write */
     wmb();
 
     /* Update the host index before invoking device */
     host_index = q->host_index;
 
     q->host_index = idx;
 
     /* Ring Doorbell */
     doorbell.word0 = 0;
     if (q->db_format == LPFC_DB_LIST_FORMAT) {
         if (q->dpp_enable && q->phba->cfg_enable_dpp) {
             bf_set(lpfc_if6_wq_db_list_fm_num_posted, &doorbell, 1);
             bf_set(lpfc_if6_wq_db_list_fm_dpp, &doorbell, 1);
             bf_set(lpfc_if6_wq_db_list_fm_dpp_id, &doorbell,
                 q->dpp_id);
             bf_set(lpfc_if6_wq_db_list_fm_id, &doorbell,
                 q->queue_id);
         } else {
             bf_set(lpfc_wq_db_list_fm_num_posted, &doorbell, 1);
             bf_set(lpfc_wq_db_list_fm_id, &doorbell, q->queue_id);
 
             /* Leave bits <23:16> clear for if_type 6 dpp */
             if_type = bf_get(lpfc_sli_intf_if_type,
                      &q->phba->sli4_hba.sli_intf);
             if (if_type != LPFC_SLI_INTF_IF_TYPE_6)
                 bf_set(lpfc_wq_db_list_fm_index, &doorbell,
                        host_index);
         }
     } else if (q->db_format == LPFC_DB_RING_FORMAT) {
         bf_set(lpfc_wq_db_ring_fm_num_posted, &doorbell, 1);
         bf_set(lpfc_wq_db_ring_fm_id, &doorbell, q->queue_id);
     } else {
         return -EINVAL;
     }
     writel(doorbell.word0, q->db_regaddr);
 
     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.
  **/
 static void
 lpfc_sli4_wq_release(struct lpfc_queue *q, uint32_t index)
 {
     /* sanity check on queue memory */
     if (unlikely(!q))
         return;
 
     q->hba_index = index;
 }
 
 /**
  * lpfc_sli4_mq_put - Put a Mailbox Queue Entry on an Mailbox Queue
  * @q: The Mailbox Queue to operate on.
  * @mqe: 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;
     struct lpfc_register doorbell;
 
     /* sanity check on queue memory */
     if (unlikely(!q))
         return -ENOMEM;
     temp_mqe = lpfc_sli4_qe(q, q->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_sli4_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 */
     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);
     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)
 {
     /* sanity check on queue memory */
     if (unlikely(!q))
         return 0;
 
     /* 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;
 
     /* sanity check on queue memory */
     if (unlikely(!q))
         return NULL;
     eqe = lpfc_sli4_qe(q, q->host_index);
 
     /* If the next EQE is not valid then we are done */
     if (bf_get_le32(lpfc_eqe_valid, eqe) != q->qe_valid)
         return NULL;
 
     /*
      * insert barrier for instruction interlock : data from the hardware
      * must have the valid bit checked before it can be copied and acted
      * upon. Speculative instructions were allowing a bcopy at the start
      * of lpfc_sli4_fp_handle_wcqe(), which is called immediately
      * after our return, to copy data before the valid bit check above
      * was done. As such, some of the copied data was stale. The barrier
      * ensures the check is before any data is copied.
      */
     mb();
     return eqe;
 }
 
 /**
  * lpfc_sli4_eq_clr_intr - Turn off interrupts from this EQ
  * @q: The Event Queue to disable interrupts
  *
  **/
 void
 lpfc_sli4_eq_clr_intr(struct lpfc_queue *q)
 {
     struct lpfc_register doorbell;
 
     doorbell.word0 = 0;
     bf_set(lpfc_eqcq_doorbell_eqci, &doorbell, 1);
     bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_EVENT);
     bf_set(lpfc_eqcq_doorbell_eqid_hi, &doorbell,
         (q->queue_id >> LPFC_EQID_HI_FIELD_SHIFT));
     bf_set(lpfc_eqcq_doorbell_eqid_lo, &doorbell, q->queue_id);
     writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
 }
 
 /**
  * lpfc_sli4_if6_eq_clr_intr - Turn off interrupts from this EQ
  * @q: The Event Queue to disable interrupts
  *
  **/
 void
 lpfc_sli4_if6_eq_clr_intr(struct lpfc_queue *q)
 {
     struct lpfc_register doorbell;
 
     doorbell.word0 = 0;
     bf_set(lpfc_if6_eq_doorbell_eqid, &doorbell, q->queue_id);
     writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
 }
 
 /**
  * lpfc_sli4_write_eq_db - write EQ DB for eqe's consumed or arm state
  * @phba: adapter with EQ
  * @q: The Event Queue that the host has completed processing for.
  * @count: Number of elements that have been consumed
  * @arm: Indicates whether the host wants to arms this CQ.
  *
  * This routine will notify the HBA, by ringing the doorbell, that count
  * number of EQEs have been processed. The @arm parameter indicates whether
  * the queue should be rearmed when ringing the doorbell.
  **/
 void
 lpfc_sli4_write_eq_db(struct lpfc_hba *phba, struct lpfc_queue *q,
              uint32_t count, bool arm)
 {
     struct lpfc_register doorbell;
 
     /* sanity check on queue memory */
     if (unlikely(!q || (count == 0 && !arm)))
         return;
 
     /* 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, count);
     bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_EVENT);
     bf_set(lpfc_eqcq_doorbell_eqid_hi, &doorbell,
             (q->queue_id >> LPFC_EQID_HI_FIELD_SHIFT));
     bf_set(lpfc_eqcq_doorbell_eqid_lo, &doorbell, q->queue_id);
     writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
     /* PCI read to flush PCI pipeline on re-arming for INTx mode */
     if ((q->phba->intr_type == INTx) && (arm == LPFC_QUEUE_REARM))
         readl(q->phba->sli4_hba.EQDBregaddr);
 }
 
 /**
  * lpfc_sli4_if6_write_eq_db - write EQ DB for eqe's consumed or arm state
  * @phba: adapter with EQ
  * @q: The Event Queue that the host has completed processing for.
  * @count: Number of elements that have been consumed
  * @arm: Indicates whether the host wants to arms this CQ.
  *
  * This routine will notify the HBA, by ringing the doorbell, that count
  * number of EQEs have been processed. The @arm parameter indicates whether
  * the queue should be rearmed when ringing the doorbell.
  **/
 void
 lpfc_sli4_if6_write_eq_db(struct lpfc_hba *phba, struct lpfc_queue *q,
               uint32_t count, bool arm)
 {
     struct lpfc_register doorbell;
 
     /* sanity check on queue memory */
     if (unlikely(!q || (count == 0 && !arm)))
         return;
 
     /* ring doorbell for number popped */
     doorbell.word0 = 0;
     if (arm)
         bf_set(lpfc_if6_eq_doorbell_arm, &doorbell, 1);
     bf_set(lpfc_if6_eq_doorbell_num_released, &doorbell, count);
     bf_set(lpfc_if6_eq_doorbell_eqid, &doorbell, q->queue_id);
     writel(doorbell.word0, q->phba->sli4_hba.EQDBregaddr);
     /* PCI read to flush PCI pipeline on re-arming for INTx mode */
     if ((q->phba->intr_type == INTx) && (arm == LPFC_QUEUE_REARM))
         readl(q->phba->sli4_hba.EQDBregaddr);
 }
 
 static void
 __lpfc_sli4_consume_eqe(struct lpfc_hba *phba, struct lpfc_queue *eq,
             struct lpfc_eqe *eqe)
 {
     if (!phba->sli4_hba.pc_sli4_params.eqav)
         bf_set_le32(lpfc_eqe_valid, eqe, 0);
 
     eq->host_index = ((eq->host_index + 1) % eq->entry_count);
 
     /* if the index wrapped around, toggle the valid bit */
     if (phba->sli4_hba.pc_sli4_params.eqav && !eq->host_index)
         eq->qe_valid = (eq->qe_valid) ? 0 : 1;
 }
 
 static void
 lpfc_sli4_eqcq_flush(struct lpfc_hba *phba, struct lpfc_queue *eq)
 {
     struct lpfc_eqe *eqe = NULL;
     u32 eq_count = 0, cq_count = 0;
     struct lpfc_cqe *cqe = NULL;
     struct lpfc_queue *cq = NULL, *childq = NULL;
     int cqid = 0;
 
     /* walk all the EQ entries and drop on the floor */
     eqe = lpfc_sli4_eq_get(eq);
     while (eqe) {
         /* Get the reference to the corresponding CQ */
         cqid = bf_get_le32(lpfc_eqe_resource_id, eqe);
         cq = NULL;
 
         list_for_each_entry(childq, &eq->child_list, list) {
             if (childq->queue_id == cqid) {
                 cq = childq;
                 break;
             }
         }
         /* If CQ is valid, iterate through it and drop all the CQEs */
         if (cq) {
             cqe = lpfc_sli4_cq_get(cq);
             while (cqe) {
                 __lpfc_sli4_consume_cqe(phba, cq, cqe);
                 cq_count++;
                 cqe = lpfc_sli4_cq_get(cq);
             }
             /* Clear and re-arm the CQ */
             phba->sli4_hba.sli4_write_cq_db(phba, cq, cq_count,
                 LPFC_QUEUE_REARM);
             cq_count = 0;
         }
         __lpfc_sli4_consume_eqe(phba, eq, eqe);
         eq_count++;
         eqe = lpfc_sli4_eq_get(eq);
     }
 
     /* Clear and re-arm the EQ */
     phba->sli4_hba.sli4_write_eq_db(phba, eq, eq_count, LPFC_QUEUE_REARM);
 }
 
 static int
 lpfc_sli4_process_eq(struct lpfc_hba *phba, struct lpfc_queue *eq,
              uint8_t rearm)
 {
     struct lpfc_eqe *eqe;
     int count = 0, consumed = 0;
 
     if (cmpxchg(&eq->queue_claimed, 0, 1) != 0)
         goto rearm_and_exit;
 
     eqe = lpfc_sli4_eq_get(eq);
     while (eqe) {
         lpfc_sli4_hba_handle_eqe(phba, eq, eqe);
         __lpfc_sli4_consume_eqe(phba, eq, eqe);
 
         consumed++;
         if (!(++count % eq->max_proc_limit))
             break;
 
         if (!(count % eq->notify_interval)) {
             phba->sli4_hba.sli4_write_eq_db(phba, eq, consumed,
                             LPFC_QUEUE_NOARM);
             consumed = 0;
         }
 
         eqe = lpfc_sli4_eq_get(eq);
     }
     eq->EQ_processed += count;
 
     /* Track the max number of EQEs processed in 1 intr */
     if (count > eq->EQ_max_eqe)
         eq->EQ_max_eqe = count;
 
     xchg(&eq->queue_claimed, 0);
 
 rearm_and_exit:
     /* Always clear the EQ. */
     phba->sli4_hba.sli4_write_eq_db(phba, eq, consumed, rearm);
 
     return count;
 }
 
 /**
  * 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;
 
     /* sanity check on queue memory */
     if (unlikely(!q))
         return NULL;
     cqe = lpfc_sli4_qe(q, q->host_index);
 
     /* If the next CQE is not valid then we are done */
     if (bf_get_le32(lpfc_cqe_valid, cqe) != q->qe_valid)
         return NULL;
 
     /*
      * insert barrier for instruction interlock : data from the hardware
      * must have the valid bit checked before it can be copied and acted
      * upon. Given what was seen in lpfc_sli4_cq_get() of speculative
      * instructions allowing action on content before valid bit checked,
      * add barrier here as well. May not be needed as "content" is a
      * single 32-bit entity here (vs multi word structure for cq's).
      */
     mb();
     return cqe;
 }
 
 static void
 __lpfc_sli4_consume_cqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
             struct lpfc_cqe *cqe)
 {
     if (!phba->sli4_hba.pc_sli4_params.cqav)
         bf_set_le32(lpfc_cqe_valid, cqe, 0);
 
     cq->host_index = ((cq->host_index + 1) % cq->entry_count);
 
     /* if the index wrapped around, toggle the valid bit */
     if (phba->sli4_hba.pc_sli4_params.cqav && !cq->host_index)
         cq->qe_valid = (cq->qe_valid) ? 0 : 1;
 }
 
 /**
  * lpfc_sli4_write_cq_db - write cq DB for entries consumed or arm state.
  * @phba: the adapter with the CQ
  * @q: The Completion Queue that the host has completed processing for.
  * @count: the number of elements that were consumed
  * @arm: Indicates whether the host wants to arms this CQ.
  *
  * This routine will notify the HBA, by ringing the doorbell, that the
  * CQEs have been processed. The @arm parameter specifies whether the
  * queue should be rearmed when ringing the doorbell.
  **/
 void
 lpfc_sli4_write_cq_db(struct lpfc_hba *phba, struct lpfc_queue *q,
              uint32_t count, bool arm)
 {
     struct lpfc_register doorbell;
 
     /* sanity check on queue memory */
     if (unlikely(!q || (count == 0 && !arm)))
         return;
 
     /* 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, count);
     bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_COMPLETION);
     bf_set(lpfc_eqcq_doorbell_cqid_hi, &doorbell,
             (q->queue_id >> LPFC_CQID_HI_FIELD_SHIFT));
     bf_set(lpfc_eqcq_doorbell_cqid_lo, &doorbell, q->queue_id);
     writel(doorbell.word0, q->phba->sli4_hba.CQDBregaddr);
 }
 
 /**
  * lpfc_sli4_if6_write_cq_db - write cq DB for entries consumed or arm state.
  * @phba: the adapter with the CQ
  * @q: The Completion Queue that the host has completed processing for.
  * @count: the number of elements that were consumed
  * @arm: Indicates whether the host wants to arms this CQ.
  *
  * This routine will notify the HBA, by ringing the doorbell, that the
  * CQEs have been processed. The @arm parameter specifies whether the
  * queue should be rearmed when ringing the doorbell.
  **/
 void
 lpfc_sli4_if6_write_cq_db(struct lpfc_hba *phba, struct lpfc_queue *q,
              uint32_t count, bool arm)
 {
     struct lpfc_register doorbell;
 
     /* sanity check on queue memory */
     if (unlikely(!q || (count == 0 && !arm)))
         return;
 
     /* ring doorbell for number popped */
     doorbell.word0 = 0;
     if (arm)
         bf_set(lpfc_if6_cq_doorbell_arm, &doorbell, 1);
     bf_set(lpfc_if6_cq_doorbell_num_released, &doorbell, count);
     bf_set(lpfc_if6_cq_doorbell_cqid, &doorbell, q->queue_id);
     writel(doorbell.word0, q->phba->sli4_hba.CQDBregaddr);
 }
 
 /*
  * lpfc_sli4_rq_put - Put a Receive Buffer Queue Entry on a 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.
  **/
 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;
     struct lpfc_rqe *temp_drqe;
     struct lpfc_register doorbell;
     int hq_put_index;
     int dq_put_index;
 
     /* sanity check on queue memory */
     if (unlikely(!hq) || unlikely(!dq))
         return -ENOMEM;
     hq_put_index = hq->host_index;
     dq_put_index = dq->host_index;
     temp_hrqe = lpfc_sli4_qe(hq, hq_put_index);
     temp_drqe = lpfc_sli4_qe(dq, dq_put_index);
 
     if (hq->type != LPFC_HRQ || dq->type != LPFC_DRQ)
         return -EINVAL;
     if (hq_put_index != dq_put_index)
         return -EINVAL;
     /* If the host has not yet processed the next entry then we are done */
     if (((hq_put_index + 1) % hq->entry_count) == hq->hba_index)
         return -EBUSY;
     lpfc_sli4_pcimem_bcopy(hrqe, temp_hrqe, hq->entry_size);
     lpfc_sli4_pcimem_bcopy(drqe, temp_drqe, dq->entry_size);
 
     /* Update the host index to point to the next slot */
     hq->host_index = ((hq_put_index + 1) % hq->entry_count);
     dq->host_index = ((dq_put_index + 1) % dq->entry_count);
     hq->RQ_buf_posted++;
 
     /* Ring The Header Receive Queue Doorbell */
     if (!(hq->host_index % hq->notify_interval)) {
         doorbell.word0 = 0;
         if (hq->db_format == LPFC_DB_RING_FORMAT) {
             bf_set(lpfc_rq_db_ring_fm_num_posted, &doorbell,
                    hq->notify_interval);
             bf_set(lpfc_rq_db_ring_fm_id, &doorbell, hq->queue_id);
         } else if (hq->db_format == LPFC_DB_LIST_FORMAT) {
             bf_set(lpfc_rq_db_list_fm_num_posted, &doorbell,
                    hq->notify_interval);
             bf_set(lpfc_rq_db_list_fm_index, &doorbell,
                    hq->host_index);
             bf_set(lpfc_rq_db_list_fm_id, &doorbell, hq->queue_id);
         } else {
             return -EINVAL;
         }
         writel(doorbell.word0, hq->db_regaddr);
     }
     return hq_put_index;
 }
 
 /*
  * lpfc_sli4_rq_release - Updates internal hba index for RQ
  *
  * 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)
 {
     /* sanity check on queue memory */
     if (unlikely(!hq) || unlikely(!dq))
         return 0;
 
     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.
  * @pring: Pointer to driver SLI ring object.
  *
  * This function returns pointer to next command iocb entry
  * in the command ring. The caller must hold hbalock to prevent
  * other threads consume the next command iocb.
  * SLI-2/SLI-3 provide different sized iocbs.
  **/
 static inline IOCB_t *
 lpfc_cmd_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 {
     return (IOCB_t *) (((char *) pring->sli.sli3.cmdringaddr) +
                pring->sli.sli3.cmdidx * phba->iocb_cmd_size);
 }
 
 /**
  * lpfc_resp_iocb - Get next response iocb entry in the ring
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  *
  * This function returns pointer to next response iocb entry
  * in the response ring. The caller must hold hbalock to make sure
  * that no other thread consume the next response iocb.
  * SLI-2/SLI-3 provide different sized iocbs.
  **/
 static inline IOCB_t *
 lpfc_resp_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 {
     return (IOCB_t *) (((char *) pring->sli.sli3.rspringaddr) +
                pring->sli.sli3.rspidx * phba->iocb_rsp_size);
 }
 
 /**
  * __lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool
  * @phba: Pointer to HBA context object.
  *
  * This function is called with hbalock held. This function
  * allocates a new driver iocb object from the iocb pool. If the
  * allocation is successful, it returns pointer to the newly
  * allocated iocb object else it returns NULL.
  **/
 struct lpfc_iocbq *
 __lpfc_sli_get_iocbq(struct lpfc_hba *phba)
 {
     struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
     struct lpfc_iocbq * iocbq = NULL;
 
     lockdep_assert_held(&phba->hbalock);
 
     list_remove_head(lpfc_iocb_list, iocbq, struct lpfc_iocbq, list);
     if (iocbq)
         phba->iocb_cnt++;
     if (phba->iocb_cnt > phba->iocb_max)
         phba->iocb_max = phba->iocb_cnt;
     return iocbq;
 }
 
 /**
  * __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 active
  * 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.
  **/
 struct lpfc_sglq *
 __lpfc_clear_active_sglq(struct lpfc_hba *phba, uint16_t xritag)
 {
     struct lpfc_sglq *sglq;
 
     sglq = phba->sli4_hba.lpfc_sglq_active_list[xritag];
     phba->sli4_hba.lpfc_sglq_active_list[xritag] = 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 active
  * 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.
  **/
 struct lpfc_sglq *
 __lpfc_get_active_sglq(struct lpfc_hba *phba, uint16_t xritag)
 {
     struct lpfc_sglq *sglq;
 
     sglq =  phba->sli4_hba.lpfc_sglq_active_list[xritag];
     return sglq;
 }
 
 /**
  * lpfc_clr_rrq_active - Clears RRQ active bit in xri_bitmap.
  * @phba: Pointer to HBA context object.
  * @xritag: xri used in this exchange.
  * @rrq: The RRQ to be cleared.
  *
  **/
 void
 lpfc_clr_rrq_active(struct lpfc_hba *phba,
             uint16_t xritag,
             struct lpfc_node_rrq *rrq)
 {
     struct lpfc_nodelist *ndlp = NULL;
 
     /* Lookup did to verify if did is still active on this vport */
     if (rrq->vport)
         ndlp = lpfc_findnode_did(rrq->vport, rrq->nlp_DID);
 
     if (!ndlp)
         goto out;
 
     if (test_and_clear_bit(xritag, ndlp->active_rrqs_xri_bitmap)) {
         rrq->send_rrq = 0;
         rrq->xritag = 0;
         rrq->rrq_stop_time = 0;
     }
 out:
     mempool_free(rrq, phba->rrq_pool);
 }
 
 /**
  * lpfc_handle_rrq_active - Checks if RRQ has waithed RATOV.
  * @phba: Pointer to HBA context object.
  *
  * This function is called with hbalock held. This function
  * Checks if stop_time (ratov from setting rrq active) has
  * been reached, if it has and the send_rrq flag is set then
  * it will call lpfc_send_rrq. If the send_rrq flag is not set
  * then it will just call the routine to clear the rrq and
  * free the rrq resource.
  * The timer is set to the next rrq that is going to expire before
  * leaving the routine.
  *
  **/
 void
 lpfc_handle_rrq_active(struct lpfc_hba *phba)
 {
     struct lpfc_node_rrq *rrq;
     struct lpfc_node_rrq *nextrrq;
     unsigned long next_time;
     unsigned long iflags;
     LIST_HEAD(send_rrq);
 
     spin_lock_irqsave(&phba->hbalock, iflags);
     phba->hba_flag &= ~HBA_RRQ_ACTIVE;
     next_time = jiffies + msecs_to_jiffies(1000 * (phba->fc_ratov + 1));
     list_for_each_entry_safe(rrq, nextrrq,
                  &phba->active_rrq_list, list) {
         if (time_after(jiffies, rrq->rrq_stop_time))
             list_move(&rrq->list, &send_rrq);
         else if (time_before(rrq->rrq_stop_time, next_time))
             next_time = rrq->rrq_stop_time;
     }
     spin_unlock_irqrestore(&phba->hbalock, iflags);
     if ((!list_empty(&phba->active_rrq_list)) &&
         (!(phba->pport->load_flag & FC_UNLOADING)))
         mod_timer(&phba->rrq_tmr, next_time);
     list_for_each_entry_safe(rrq, nextrrq, &send_rrq, list) {
         list_del(&rrq->list);
         if (!rrq->send_rrq) {
             /* this call will free the rrq */
             lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
         } else if (lpfc_send_rrq(phba, rrq)) {
             /* if we send the rrq then the completion handler
             *  will clear the bit in the xribitmap.
             */
             lpfc_clr_rrq_active(phba, rrq->xritag,
                         rrq);
         }
     }
 }
 
 /**
  * lpfc_get_active_rrq - Get the active RRQ for this exchange.
  * @vport: Pointer to vport context object.
  * @xri: The xri used in the exchange.
  * @did: The targets DID for this exchange.
  *
  * returns NULL = rrq not found in the phba->active_rrq_list.
  *         rrq = rrq for this xri and target.
  **/
 struct lpfc_node_rrq *
 lpfc_get_active_rrq(struct lpfc_vport *vport, uint16_t xri, uint32_t did)
 {
     struct lpfc_hba *phba = vport->phba;
     struct lpfc_node_rrq *rrq;
     struct lpfc_node_rrq *nextrrq;
     unsigned long iflags;
 
     if (phba->sli_rev != LPFC_SLI_REV4)
         return NULL;
     spin_lock_irqsave(&phba->hbalock, iflags);
     list_for_each_entry_safe(rrq, nextrrq, &phba->active_rrq_list, list) {
         if (rrq->vport == vport && rrq->xritag == xri &&
                 rrq->nlp_DID == did){
             list_del(&rrq->list);
             spin_unlock_irqrestore(&phba->hbalock, iflags);
             return rrq;
         }
     }
     spin_unlock_irqrestore(&phba->hbalock, iflags);
     return NULL;
 }
 
 /**
  * lpfc_cleanup_vports_rrqs - Remove and clear the active RRQ for this vport.
  * @vport: Pointer to vport context object.
  * @ndlp: Pointer to the lpfc_node_list structure.
  * If ndlp is NULL Remove all active RRQs for this vport from the
  * phba->active_rrq_list and clear the rrq.
  * If ndlp is not NULL then only remove rrqs for this vport & this ndlp.
  **/
 void
 lpfc_cleanup_vports_rrqs(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 
 {
     struct lpfc_hba *phba = vport->phba;
     struct lpfc_node_rrq *rrq;
     struct lpfc_node_rrq *nextrrq;
     unsigned long iflags;
     LIST_HEAD(rrq_list);
 
     if (phba->sli_rev != LPFC_SLI_REV4)
         return;
     if (!ndlp) {
         lpfc_sli4_vport_delete_els_xri_aborted(vport);
         lpfc_sli4_vport_delete_fcp_xri_aborted(vport);
     }
     spin_lock_irqsave(&phba->hbalock, iflags);
     list_for_each_entry_safe(rrq, nextrrq, &phba->active_rrq_list, list) {
         if (rrq->vport != vport)
             continue;
 
         if (!ndlp || ndlp == lpfc_findnode_did(vport, rrq->nlp_DID))
             list_move(&rrq->list, &rrq_list);
 
     }
     spin_unlock_irqrestore(&phba->hbalock, iflags);
 
     list_for_each_entry_safe(rrq, nextrrq, &rrq_list, list) {
         list_del(&rrq->list);
         lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
     }
 }
 
 /**
  * lpfc_test_rrq_active - Test RRQ bit in xri_bitmap.
  * @phba: Pointer to HBA context object.
  * @ndlp: Targets nodelist pointer for this exchange.
  * @xritag: the xri in the bitmap to test.
  *
  * This function returns:
  * 0 = rrq not active for this xri
  * 1 = rrq is valid for this xri.
  **/
 int
 lpfc_test_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
             uint16_t  xritag)
 {
     if (!ndlp)
         return 0;
     if (!ndlp->active_rrqs_xri_bitmap)
         return 0;
     if (test_bit(xritag, ndlp->active_rrqs_xri_bitmap))
         return 1;
     else
         return 0;
 }
 
 /**
  * lpfc_set_rrq_active - set RRQ active bit in xri_bitmap.
  * @phba: Pointer to HBA context object.
  * @ndlp: nodelist pointer for this target.
  * @xritag: xri used in this exchange.
  * @rxid: Remote Exchange ID.
  * @send_rrq: Flag used to determine if we should send rrq els cmd.
  *
  * This function takes the hbalock.
  * The active bit is always set in the active rrq xri_bitmap even
  * if there is no slot avaiable for the other rrq information.
  *
  * returns 0 rrq actived for this xri
  *         < 0 No memory or invalid ndlp.
  **/
 int
 lpfc_set_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
             uint16_t xritag, uint16_t rxid, uint16_t send_rrq)
 {
     unsigned long iflags;
     struct lpfc_node_rrq *rrq;
     int empty;
 
     if (!ndlp)
         return -EINVAL;
 
     if (!phba->cfg_enable_rrq)
         return -EINVAL;
 
     spin_lock_irqsave(&phba->hbalock, iflags);
     if (phba->pport->load_flag & FC_UNLOADING) {
         phba->hba_flag &= ~HBA_RRQ_ACTIVE;
         goto out;
     }
 
     if (ndlp->vport && (ndlp->vport->load_flag & FC_UNLOADING))
         goto out;
 
     if (!ndlp->active_rrqs_xri_bitmap)
         goto out;
 
     if (test_and_set_bit(xritag, ndlp->active_rrqs_xri_bitmap))
         goto out;
 
     spin_unlock_irqrestore(&phba->hbalock, iflags);
     rrq = mempool_alloc(phba->rrq_pool, GFP_ATOMIC);
     if (!rrq) {
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "3155 Unable to allocate RRQ xri:0x%x rxid:0x%x"
                 " DID:0x%x Send:%d\n",
                 xritag, rxid, ndlp->nlp_DID, send_rrq);
         return -EINVAL;
     }
     if (phba->cfg_enable_rrq == 1)
         rrq->send_rrq = send_rrq;
     else
         rrq->send_rrq = 0;
     rrq->xritag = xritag;
     rrq->rrq_stop_time = jiffies +
                 msecs_to_jiffies(1000 * (phba->fc_ratov + 1));
     rrq->nlp_DID = ndlp->nlp_DID;
     rrq->vport = ndlp->vport;
     rrq->rxid = rxid;
     spin_lock_irqsave(&phba->hbalock, iflags);
     empty = list_empty(&phba->active_rrq_list);
     list_add_tail(&rrq->list, &phba->active_rrq_list);
     phba->hba_flag |= HBA_RRQ_ACTIVE;
     if (empty)
         lpfc_worker_wake_up(phba);
     spin_unlock_irqrestore(&phba->hbalock, iflags);
     return 0;
 out:
     spin_unlock_irqrestore(&phba->hbalock, iflags);
     lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
             "2921 Can't set rrq active xri:0x%x rxid:0x%x"
             " DID:0x%x Send:%d\n",
             xritag, rxid, ndlp->nlp_DID, send_rrq);
     return -EINVAL;
 }
 
 /**
  * __lpfc_sli_get_els_sglq - Allocates an iocb object from sgl pool
  * @phba: Pointer to HBA context object.
  * @piocbq: Pointer to the iocbq.
  *
  * The driver calls this function with either the nvme ls ring lock
  * or the fc els ring lock held depending on the iocb usage.  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_els_sglq(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq)
 {
     struct list_head *lpfc_els_sgl_list = &phba->sli4_hba.lpfc_els_sgl_list;
     struct lpfc_sglq *sglq = NULL;
     struct lpfc_sglq *start_sglq = NULL;
     struct lpfc_io_buf *lpfc_cmd;
     struct lpfc_nodelist *ndlp;
     int found = 0;
     u8 cmnd;
 
     cmnd = get_job_cmnd(phba, piocbq);
 
     if (piocbq->cmd_flag & LPFC_IO_FCP) {
         lpfc_cmd = piocbq->io_buf;
         ndlp = lpfc_cmd->rdata->pnode;
     } else  if ((cmnd == CMD_GEN_REQUEST64_CR) &&
             !(piocbq->cmd_flag & LPFC_IO_LIBDFC)) {
         ndlp = piocbq->ndlp;
     } else  if (piocbq->cmd_flag & LPFC_IO_LIBDFC) {
         if (piocbq->cmd_flag & LPFC_IO_LOOPBACK)
             ndlp = NULL;
         else
             ndlp = piocbq->ndlp;
     } else {
         ndlp = piocbq->ndlp;
     }
 
     spin_lock(&phba->sli4_hba.sgl_list_lock);
     list_remove_head(lpfc_els_sgl_list, sglq, struct lpfc_sglq, list);
     start_sglq = sglq;
     while (!found) {
         if (!sglq)
             break;
         if (ndlp && ndlp->active_rrqs_xri_bitmap &&
             test_bit(sglq->sli4_lxritag,
             ndlp->active_rrqs_xri_bitmap)) {
             /* This xri has an rrq outstanding for this DID.
              * put it back in the list and get another xri.
              */
             list_add_tail(&sglq->list, lpfc_els_sgl_list);
             sglq = NULL;
             list_remove_head(lpfc_els_sgl_list, sglq,
                         struct lpfc_sglq, list);
             if (sglq == start_sglq) {
                 list_add_tail(&sglq->list, lpfc_els_sgl_list);
                 sglq = NULL;
                 break;
             } else
                 continue;
         }
         sglq->ndlp = ndlp;
         found = 1;
         phba->sli4_hba.lpfc_sglq_active_list[sglq->sli4_lxritag] = sglq;
         sglq->state = SGL_ALLOCATED;
     }
     spin_unlock(&phba->sli4_hba.sgl_list_lock);
     return sglq;
 }
 
 /**
  * __lpfc_sli_get_nvmet_sglq - Allocates an iocb object from sgl pool
  * @phba: Pointer to HBA context object.
  * @piocbq: Pointer to the iocbq.
  *
  * This function is called with the sgl_list lock 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.
  **/
 struct lpfc_sglq *
 __lpfc_sli_get_nvmet_sglq(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq)
 {
     struct list_head *lpfc_nvmet_sgl_list;
     struct lpfc_sglq *sglq = NULL;
 
     lpfc_nvmet_sgl_list = &phba->sli4_hba.lpfc_nvmet_sgl_list;
 
     lockdep_assert_held(&phba->sli4_hba.sgl_list_lock);
 
     list_remove_head(lpfc_nvmet_sgl_list, sglq, struct lpfc_sglq, list);
     if (!sglq)
         return NULL;
     phba->sli4_hba.lpfc_sglq_active_list[sglq->sli4_lxritag] = sglq;
     sglq->state = SGL_ALLOCATED;
     return sglq;
 }
 
 /**
  * lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool
  * @phba: Pointer to HBA context object.
  *
  * This function is called with no lock held. This function
  * allocates a new driver iocb object from the iocb pool. If the
  * allocation is successful, it returns pointer to the newly
  * allocated iocb object else it returns NULL.
  **/
 struct lpfc_iocbq *
 lpfc_sli_get_iocbq(struct lpfc_hba *phba)
 {
     struct lpfc_iocbq * iocbq = NULL;
     unsigned long iflags;
 
     spin_lock_irqsave(&phba->hbalock, iflags);
     iocbq = __lpfc_sli_get_iocbq(phba);
     spin_unlock_irqrestore(&phba->hbalock, iflags);
     return iocbq;
 }
 
 /**
  * __lpfc_sli_release_iocbq_s4 - Release iocb to the iocb pool
  * @phba: Pointer to HBA context object.
  * @iocbq: Pointer to driver iocb object.
  *
  * This function is called to release the 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.
  * 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_els_sgl_list). The hbalock is
  *  asserted held in the code path calling this routine.
  **/
 static void
 __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, wqe);
     unsigned long iflag = 0;
     struct lpfc_sli_ring *pring;
 
     if (iocbq->sli4_xritag == NO_XRI)
         sglq = NULL;
     else
         sglq = __lpfc_clear_active_sglq(phba, iocbq->sli4_lxritag);
 
 
     if (sglq)  {
         if (iocbq->cmd_flag & LPFC_IO_NVMET) {
             spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock,
                       iflag);
             sglq->state = SGL_FREED;
             sglq->ndlp = NULL;
             list_add_tail(&sglq->list,
                       &phba->sli4_hba.lpfc_nvmet_sgl_list);
             spin_unlock_irqrestore(
                 &phba->sli4_hba.sgl_list_lock, iflag);
             goto out;
         }
 
         if ((iocbq->cmd_flag & LPFC_EXCHANGE_BUSY) &&
             (!(unlikely(pci_channel_offline(phba->pcidev)))) &&
             sglq->state != SGL_XRI_ABORTED) {
             spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock,
                       iflag);
 
             /* Check if we can get a reference on ndlp */
             if (sglq->ndlp && !lpfc_nlp_get(sglq->ndlp))
                 sglq->ndlp = NULL;
 
             list_add(&sglq->list,
                  &phba->sli4_hba.lpfc_abts_els_sgl_list);
             spin_unlock_irqrestore(
                 &phba->sli4_hba.sgl_list_lock, iflag);
         } else {
             spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock,
                       iflag);
             sglq->state = SGL_FREED;
             sglq->ndlp = NULL;
             list_add_tail(&sglq->list,
                       &phba->sli4_hba.lpfc_els_sgl_list);
             spin_unlock_irqrestore(
                 &phba->sli4_hba.sgl_list_lock, iflag);
             pring = lpfc_phba_elsring(phba);
             /* Check if TXQ queue needs to be serviced */
             if (pring && (!list_empty(&pring->txq)))
                 lpfc_worker_wake_up(phba);
         }
     }
 
 out:
     /*
      * Clean all volatile data fields, preserve iotag and node struct.
      */
     memset((char *)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
     iocbq->sli4_lxritag = NO_XRI;
     iocbq->sli4_xritag = NO_XRI;
     iocbq->cmd_flag &= ~(LPFC_IO_NVME | LPFC_IO_NVMET | LPFC_IO_CMF |
                   LPFC_IO_NVME_LS);
     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 to release the 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. The hbalock is asserted held in
  * the code path calling this routine.
  **/
 static void
 __lpfc_sli_release_iocbq_s3(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
 {
     size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
 
     /*
      * 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)
 {
     lockdep_assert_held(&phba->hbalock);
 
     phba->__lpfc_sli_release_iocbq(phba, iocbq);
     phba->iocb_cnt--;
 }
 
 /**
  * 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 no lock held to release the iocb to
  * iocb pool.
  **/
 void
 lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
 {
     unsigned long iflags;
 
     /*
      * Clean all volatile data fields, preserve iotag and node struct.
      */
     spin_lock_irqsave(&phba->hbalock, iflags);
     __lpfc_sli_release_iocbq(phba, iocbq);
     spin_unlock_irqrestore(&phba->hbalock, iflags);
 }
 
 /**
  * lpfc_sli_cancel_iocbs - Cancel all iocbs from a list.
  * @phba: Pointer to HBA context object.
  * @iocblist: List of IOCBs.
  * @ulpstatus: ULP status in IOCB command field.
  * @ulpWord4: ULP word-4 in IOCB command field.
  *
  * This function is called with a list of IOCBs to cancel. It cancels the IOCB
  * on the list by invoking the complete callback function associated with the
  * IOCB with the provided @ulpstatus and @ulpword4 set to the IOCB commond
  * fields.
  **/
 void
 lpfc_sli_cancel_iocbs(struct lpfc_hba *phba, struct list_head *iocblist,
               uint32_t ulpstatus, uint32_t ulpWord4)
 {
     struct lpfc_iocbq *piocb;
 
     while (!list_empty(iocblist)) {
         list_remove_head(iocblist, piocb, struct lpfc_iocbq, list);
         if (piocb->cmd_cmpl) {
             if (piocb->cmd_flag & LPFC_IO_NVME) {
                 lpfc_nvme_cancel_iocb(phba, piocb,
                               ulpstatus, ulpWord4);
             } else {
                 if (phba->sli_rev == LPFC_SLI_REV4) {
                     bf_set(lpfc_wcqe_c_status,
                            &piocb->wcqe_cmpl, ulpstatus);
                     piocb->wcqe_cmpl.parameter = ulpWord4;
                 } else {
                     piocb->iocb.ulpStatus = ulpstatus;
                     piocb->iocb.un.ulpWord[4] = ulpWord4;
                 }
                 (piocb->cmd_cmpl) (phba, piocb, piocb);
             }
         } else {
             lpfc_sli_release_iocbq(phba, piocb);
         }
     }
     return;
 }
 
 /**
  * lpfc_sli_iocb_cmd_type - Get the iocb type
  * @iocb_cmnd: iocb command code.
  *
  * This function is called by ring event handler function to get the iocb type.
  * This function translates the iocb command to an iocb command type used to
  * decide the final disposition of each completed IOCB.
  * The function returns
  * LPFC_UNKNOWN_IOCB if it is an unsupported iocb
  * LPFC_SOL_IOCB     if it is a solicited iocb completion
  * LPFC_ABORT_IOCB   if it is an abort iocb
  * LPFC_UNSOL_IOCB   if it is an unsolicited iocb
  *
  * The caller is not required to hold any lock.
  **/
 static lpfc_iocb_type
 lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
 {
     lpfc_iocb_type type = LPFC_UNKNOWN_IOCB;
 
     if (iocb_cmnd > CMD_MAX_IOCB_CMD)
         return 0;
 
     switch (iocb_cmnd) {
     case CMD_XMIT_SEQUENCE_CR:
     case CMD_XMIT_SEQUENCE_CX:
     case CMD_XMIT_BCAST_CN:
     case CMD_XMIT_BCAST_CX:
     case CMD_ELS_REQUEST_CR:
     case CMD_ELS_REQUEST_CX:
     case CMD_CREATE_XRI_CR:
     case CMD_CREATE_XRI_CX:
     case CMD_GET_RPI_CN:
     case CMD_XMIT_ELS_RSP_CX:
     case CMD_GET_RPI_CR:
     case CMD_FCP_IWRITE_CR:
     case CMD_FCP_IWRITE_CX:
     case CMD_FCP_IREAD_CR:
     case CMD_FCP_IREAD_CX:
     case CMD_FCP_ICMND_CR:
     case CMD_FCP_ICMND_CX:
     case CMD_FCP_TSEND_CX:
     case CMD_FCP_TRSP_CX:
     case CMD_FCP_TRECEIVE_CX:
     case CMD_FCP_AUTO_TRSP_CX:
     case CMD_ADAPTER_MSG:
     case CMD_ADAPTER_DUMP:
     case CMD_XMIT_SEQUENCE64_CR:
     case CMD_XMIT_SEQUENCE64_CX:
     case CMD_XMIT_BCAST64_CN:
     case CMD_XMIT_BCAST64_CX:
     case CMD_ELS_REQUEST64_CR:
     case CMD_ELS_REQUEST64_CX:
     case CMD_FCP_IWRITE64_CR:
     case CMD_FCP_IWRITE64_CX:
     case CMD_FCP_IREAD64_CR:
     case CMD_FCP_IREAD64_CX:
     case CMD_FCP_ICMND64_CR:
     case CMD_FCP_ICMND64_CX:
     case CMD_FCP_TSEND64_CX:
     case CMD_FCP_TRSP64_CX:
     case CMD_FCP_TRECEIVE64_CX:
     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 CMD_SEND_FRAME:
         type = LPFC_SOL_IOCB;
         break;
     case CMD_ABORT_XRI_CN:
     case CMD_ABORT_XRI_CX:
     case CMD_CLOSE_XRI_CN:
     case CMD_CLOSE_XRI_CX:
     case CMD_XRI_ABORTED_CX:
     case CMD_ABORT_MXRI64_CN:
     case CMD_XMIT_BLS_RSP64_CX:
         type = LPFC_ABORT_IOCB;
         break;
     case CMD_RCV_SEQUENCE_CX:
     case CMD_RCV_ELS_REQ_CX:
     case CMD_RCV_SEQUENCE64_CX:
     case CMD_RCV_ELS_REQ64_CX:
     case CMD_ASYNC_STATUS:
     case CMD_IOCB_RCV_SEQ64_CX:
     case CMD_IOCB_RCV_ELS64_CX:
     case CMD_IOCB_RCV_CONT64_CX:
     case CMD_IOCB_RET_XRI64_CX:
         type = LPFC_UNSOL_IOCB;
         break;
     case CMD_IOCB_XMIT_MSEQ64_CR:
     case CMD_IOCB_XMIT_MSEQ64_CX:
     case CMD_IOCB_RCV_SEQ_LIST64_CX:
     case CMD_IOCB_RCV_ELS_LIST64_CX:
     case CMD_IOCB_CLOSE_EXTENDED_CN:
     case CMD_IOCB_ABORT_EXTENDED_CN:
     case CMD_IOCB_RET_HBQE64_CN:
     case CMD_IOCB_FCP_IBIDIR64_CR:
     case CMD_IOCB_FCP_IBIDIR64_CX:
     case CMD_IOCB_FCP_ITASKMGT64_CX:
     case CMD_IOCB_LOGENTRY_CN:
     case CMD_IOCB_LOGENTRY_ASYNC_CN:
         printk("%s - Unhandled SLI-3 Command x%x\n",
                 __func__, iocb_cmnd);
         type = LPFC_UNKNOWN_IOCB;
         break;
     default:
         type = LPFC_UNKNOWN_IOCB;
         break;
     }
 
     return type;
 }
 
 /**
  * lpfc_sli_ring_map - Issue config_ring mbox for all rings
  * @phba: Pointer to HBA context object.
  *
  * This function is called from SLI initialization code
  * to configure every ring of the HBA's SLI interface. The
  * caller is not required to hold any lock. This function issues
  * a config_ring mailbox command for each ring.
  * This function returns zero if successful else returns a negative
  * error code.
  **/
 static int
 lpfc_sli_ring_map(struct lpfc_hba *phba)
 {
     struct lpfc_sli *psli = &phba->sli;
     LPFC_MBOXQ_t *pmb;
     MAILBOX_t *pmbox;
     int i, rc, ret = 0;
 
     pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!pmb)
         return -ENOMEM;
     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);
         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
         if (rc != MBX_SUCCESS) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0446 Adapter failed to init (%d), "
                     "mbxCmd x%x CFG_RING, mbxStatus x%x, "
                     "ring %d\n",
                     rc, pmbox->mbxCommand,
                     pmbox->mbxStatus, i);
             phba->link_state = LPFC_HBA_ERROR;
             ret = -ENXIO;
             break;
         }
     }
     mempool_free(pmb, phba->mbox_mem_pool);
     return ret;
 }
 
 /**
  * lpfc_sli_ringtxcmpl_put - Adds new iocb to the txcmplq
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  * @piocb: Pointer to the driver iocb object.
  *
  * The driver calls this function with the hbalock held for SLI3 ports or
  * the ring lock held for SLI4 ports. The function adds the
  * new iocb to txcmplq of the given ring. This function always returns
  * 0. If this function is called for ELS ring, this function checks if
  * there is a vport associated with the ELS command. This function also
  * starts els_tmofunc timer if this is an ELS command.
  **/
 static int
 lpfc_sli_ringtxcmpl_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
             struct lpfc_iocbq *piocb)
 {
     u32 ulp_command = 0;
 
     BUG_ON(!piocb);
     ulp_command = get_job_cmnd(phba, piocb);
 
     list_add_tail(&piocb->list, &pring->txcmplq);
     piocb->cmd_flag |= LPFC_IO_ON_TXCMPLQ;
     pring->txcmplq_cnt++;
     if ((unlikely(pring->ringno == LPFC_ELS_RING)) &&
        (ulp_command != CMD_ABORT_XRI_WQE) &&
        (ulp_command != CMD_ABORT_XRI_CN) &&
        (ulp_command != CMD_CLOSE_XRI_CN)) {
         BUG_ON(!piocb->vport);
         if (!(piocb->vport->load_flag & FC_UNLOADING))
             mod_timer(&piocb->vport->els_tmofunc,
                   jiffies +
                   msecs_to_jiffies(1000 * (phba->fc_ratov << 1)));
     }
 
     return 0;
 }
 
 /**
  * lpfc_sli_ringtx_get - Get first element of the txq
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  *
  * This function is called with hbalock held to get next
  * iocb in txq of the given ring. If there is any iocb in
  * the txq, the function returns first iocb in the list after
  * removing the iocb from the list, else it returns NULL.
  **/
 struct lpfc_iocbq *
 lpfc_sli_ringtx_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 {
     struct lpfc_iocbq *cmd_iocb;
 
     lockdep_assert_held(&phba->hbalock);
 
     list_remove_head((&pring->txq), cmd_iocb, struct lpfc_iocbq, list);
     return cmd_iocb;
 }
 
 /**
  * lpfc_cmf_sync_cmpl - Process a CMF_SYNC_WQE cmpl
  * @phba: Pointer to HBA context object.
  * @cmdiocb: Pointer to driver command iocb object.
  * @rspiocb: Pointer to driver response iocb object.
  *
  * This routine will inform the driver of any BW adjustments we need
  * to make. These changes will be picked up during the next CMF
  * timer interrupt. In addition, any BW changes will be logged
  * with LOG_CGN_MGMT.
  **/
 static void
 lpfc_cmf_sync_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
            struct lpfc_iocbq *rspiocb)
 {
     union lpfc_wqe128 *wqe;
     uint32_t status, info;
     struct lpfc_wcqe_complete *wcqe = &rspiocb->wcqe_cmpl;
     uint64_t bw, bwdif, slop;
     uint64_t pcent, bwpcent;
     int asig, afpin, sigcnt, fpincnt;
     int wsigmax, wfpinmax, cg, tdp;
     char *s;
 
     /* First check for error */
     status = bf_get(lpfc_wcqe_c_status, wcqe);
     if (status) {
         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                 "6211 CMF_SYNC_WQE Error "
                 "req_tag x%x status x%x hwstatus x%x "
                 "tdatap x%x parm x%x\n",
                 bf_get(lpfc_wcqe_c_request_tag, wcqe),
                 bf_get(lpfc_wcqe_c_status, wcqe),
                 bf_get(lpfc_wcqe_c_hw_status, wcqe),
                 wcqe->total_data_placed,
                 wcqe->parameter);
         goto out;
     }
 
     /* Gather congestion information on a successful cmpl */
     info = wcqe->parameter;
     phba->cmf_active_info = info;
 
     /* See if firmware info count is valid or has changed */
     if (info > LPFC_MAX_CMF_INFO || phba->cmf_info_per_interval == info)
         info = 0;
     else
         phba->cmf_info_per_interval = info;
 
     tdp = bf_get(lpfc_wcqe_c_cmf_bw, wcqe);
     cg = bf_get(lpfc_wcqe_c_cmf_cg, wcqe);
 
     /* Get BW requirement from firmware */
     bw = (uint64_t)tdp * LPFC_CMF_BLK_SIZE;
     if (!bw) {
         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                 "6212 CMF_SYNC_WQE x%x: NULL bw\n",
                 bf_get(lpfc_wcqe_c_request_tag, wcqe));
         goto out;
     }
 
     /* Gather information needed for logging if a BW change is required */
     wqe = &cmdiocb->wqe;
     asig = bf_get(cmf_sync_asig, &wqe->cmf_sync);
     afpin = bf_get(cmf_sync_afpin, &wqe->cmf_sync);
     fpincnt = bf_get(cmf_sync_wfpincnt, &wqe->cmf_sync);
     sigcnt = bf_get(cmf_sync_wsigcnt, &wqe->cmf_sync);
     if (phba->cmf_max_bytes_per_interval != bw ||
         (asig || afpin || sigcnt || fpincnt)) {
         /* Are we increasing or decreasing BW */
         if (phba->cmf_max_bytes_per_interval <  bw) {
             bwdif = bw - phba->cmf_max_bytes_per_interval;
             s = "Increase";
         } else {
             bwdif = phba->cmf_max_bytes_per_interval - bw;
             s = "Decrease";
         }
 
         /* What is the change percentage */
         slop = div_u64(phba->cmf_link_byte_count, 200); /*For rounding*/
         pcent = div64_u64(bwdif * 100 + slop,
                   phba->cmf_link_byte_count);
         bwpcent = div64_u64(bw * 100 + slop,
                     phba->cmf_link_byte_count);
         if (asig) {
             lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                     "6237 BW Threshold %lld%% (%lld): "
                     "%lld%% %s: Signal Alarm: cg:%d "
                     "Info:%u\n",
                     bwpcent, bw, pcent, s, cg,
                     phba->cmf_active_info);
         } else if (afpin) {
             lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                     "6238 BW Threshold %lld%% (%lld): "
                     "%lld%% %s: FPIN Alarm: cg:%d "
                     "Info:%u\n",
                     bwpcent, bw, pcent, s, cg,
                     phba->cmf_active_info);
         } else if (sigcnt) {
             wsigmax = bf_get(cmf_sync_wsigmax, &wqe->cmf_sync);
             lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                     "6239 BW Threshold %lld%% (%lld): "
                     "%lld%% %s: Signal Warning: "
                     "Cnt %d Max %d: cg:%d Info:%u\n",
                     bwpcent, bw, pcent, s, sigcnt,
                     wsigmax, cg, phba->cmf_active_info);
         } else if (fpincnt) {
             wfpinmax = bf_get(cmf_sync_wfpinmax, &wqe->cmf_sync);
             lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                     "6240 BW Threshold %lld%% (%lld): "
                     "%lld%% %s: FPIN Warning: "
                     "Cnt %d Max %d: cg:%d Info:%u\n",
                     bwpcent, bw, pcent, s, fpincnt,
                     wfpinmax, cg, phba->cmf_active_info);
         } else {
             lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                     "6241 BW Threshold %lld%% (%lld): "
                     "CMF %lld%% %s: cg:%d Info:%u\n",
                     bwpcent, bw, pcent, s, cg,
                     phba->cmf_active_info);
         }
     } else if (info) {
         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                 "6246 Info Threshold %u\n", info);
     }
 
     /* Save BW change to be picked up during next timer interrupt */
     phba->cmf_last_sync_bw = bw;
 out:
     lpfc_sli_release_iocbq(phba, cmdiocb);
 }
 
 /**
  * lpfc_issue_cmf_sync_wqe - Issue a CMF_SYNC_WQE
  * @phba: Pointer to HBA context object.
  * @ms:   ms to set in WQE interval, 0 means use init op
  * @total: Total rcv bytes for this interval
  *
  * This routine is called every CMF timer interrupt. Its purpose is
  * to issue a CMF_SYNC_WQE to the firmware to inform it of any events
  * that may indicate we have congestion (FPINs or Signals). Upon
  * completion, the firmware will indicate any BW restrictions the
  * driver may need to take.
  **/
 int
 lpfc_issue_cmf_sync_wqe(struct lpfc_hba *phba, u32 ms, u64 total)
 {
     union lpfc_wqe128 *wqe;
     struct lpfc_iocbq *sync_buf;
     unsigned long iflags;
     u32 ret_val;
     u32 atot, wtot, max;
 
     /* First address any alarm / warning activity */
     atot = atomic_xchg(&phba->cgn_sync_alarm_cnt, 0);
     wtot = atomic_xchg(&phba->cgn_sync_warn_cnt, 0);
 
     /* ONLY Managed mode will send the CMF_SYNC_WQE to the HBA */
     if (phba->cmf_active_mode != LPFC_CFG_MANAGED ||
         phba->link_state == LPFC_LINK_DOWN)
         return 0;
 
     spin_lock_irqsave(&phba->hbalock, iflags);
     sync_buf = __lpfc_sli_get_iocbq(phba);
     if (!sync_buf) {
         lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT,
                 "6244 No available WQEs for CMF_SYNC_WQE\n");
         ret_val = ENOMEM;
         goto out_unlock;
     }
 
     wqe = &sync_buf->wqe;
 
     /* WQEs are reused.  Clear stale data and set key fields to zero */
     memset(wqe, 0, sizeof(*wqe));
 
     /* If this is the very first CMF_SYNC_WQE, issue an init operation */
     if (!ms) {
         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                 "6441 CMF Init %d - CMF_SYNC_WQE\n",
                 phba->fc_eventTag);
         bf_set(cmf_sync_op, &wqe->cmf_sync, 1); /* 1=init */
         bf_set(cmf_sync_interval, &wqe->cmf_sync, LPFC_CMF_INTERVAL);
         goto initpath;
     }
 
     bf_set(cmf_sync_op, &wqe->cmf_sync, 0); /* 0=recalc */
     bf_set(cmf_sync_interval, &wqe->cmf_sync, ms);
 
     /* Check for alarms / warnings */
     if (atot) {
         if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) {
             /* We hit an Signal alarm condition */
             bf_set(cmf_sync_asig, &wqe->cmf_sync, 1);
         } else {
             /* We hit a FPIN alarm condition */
             bf_set(cmf_sync_afpin, &wqe->cmf_sync, 1);
         }
     } else if (wtot) {
         if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY ||
             phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) {
             /* We hit an Signal warning condition */
             max = LPFC_SEC_TO_MSEC / lpfc_fabric_cgn_frequency *
                 lpfc_acqe_cgn_frequency;
             bf_set(cmf_sync_wsigmax, &wqe->cmf_sync, max);
             bf_set(cmf_sync_wsigcnt, &wqe->cmf_sync, wtot);
         } else {
             /* We hit a FPIN warning condition */
             bf_set(cmf_sync_wfpinmax, &wqe->cmf_sync, 1);
             bf_set(cmf_sync_wfpincnt, &wqe->cmf_sync, 1);
         }
     }
 
     /* Update total read blocks during previous timer interval */
     wqe->cmf_sync.read_bytes = (u32)(total / LPFC_CMF_BLK_SIZE);
 
 initpath:
     bf_set(cmf_sync_ver, &wqe->cmf_sync, LPFC_CMF_SYNC_VER);
     wqe->cmf_sync.event_tag = phba->fc_eventTag;
     bf_set(cmf_sync_cmnd, &wqe->cmf_sync, CMD_CMF_SYNC_WQE);
 
     /* Setup reqtag to match the wqe completion. */
     bf_set(cmf_sync_reqtag, &wqe->cmf_sync, sync_buf->iotag);
 
     bf_set(cmf_sync_qosd, &wqe->cmf_sync, 1);
 
     bf_set(cmf_sync_cmd_type, &wqe->cmf_sync, CMF_SYNC_COMMAND);
     bf_set(cmf_sync_wqec, &wqe->cmf_sync, 1);
     bf_set(cmf_sync_cqid, &wqe->cmf_sync, LPFC_WQE_CQ_ID_DEFAULT);
 
     sync_buf->vport = phba->pport;
     sync_buf->cmd_cmpl = lpfc_cmf_sync_cmpl;
     sync_buf->cmd_dmabuf = NULL;
     sync_buf->rsp_dmabuf = NULL;
     sync_buf->bpl_dmabuf = NULL;
     sync_buf->sli4_xritag = NO_XRI;
 
     sync_buf->cmd_flag |= LPFC_IO_CMF;
     ret_val = lpfc_sli4_issue_wqe(phba, &phba->sli4_hba.hdwq[0], sync_buf);
     if (ret_val) {
         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                 "6214 Cannot issue CMF_SYNC_WQE: x%x\n",
                 ret_val);
         __lpfc_sli_release_iocbq(phba, sync_buf);
     }
 out_unlock:
     spin_unlock_irqrestore(&phba->hbalock, iflags);
     return ret_val;
 }
 
 /**
  * lpfc_sli_next_iocb_slot - Get next iocb slot in the ring
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  *
  * This function is called with hbalock held and the caller must post the
  * iocb without releasing the lock. If the caller releases the lock,
  * iocb slot returned by the function is not guaranteed to be available.
  * The function returns pointer to the next available iocb slot if there
  * is available slot in the ring, else it returns NULL.
  * If the get index of the ring is ahead of the put index, the function
  * will post an error attention event to the worker thread to take the
  * HBA to offline state.
  **/
 static IOCB_t *
 lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 {
     struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
     uint32_t  max_cmd_idx = pring->sli.sli3.numCiocb;
 
     lockdep_assert_held(&phba->hbalock);
 
     if ((pring->sli.sli3.next_cmdidx == pring->sli.sli3.cmdidx) &&
        (++pring->sli.sli3.next_cmdidx >= max_cmd_idx))
         pring->sli.sli3.next_cmdidx = 0;
 
     if (unlikely(pring->sli.sli3.local_getidx ==
         pring->sli.sli3.next_cmdidx)) {
 
         pring->sli.sli3.local_getidx = le32_to_cpu(pgp->cmdGetInx);
 
         if (unlikely(pring->sli.sli3.local_getidx >= max_cmd_idx)) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0315 Ring %d issue: portCmdGet %d "
                     "is bigger than cmd ring %d\n",
                     pring->ringno,
                     pring->sli.sli3.local_getidx,
                     max_cmd_idx);
 
             phba->link_state = LPFC_HBA_ERROR;
             /*
              * All error attention handlers are posted to
              * worker thread
              */
             phba->work_ha |= HA_ERATT;
             phba->work_hs = HS_FFER3;
 
             lpfc_worker_wake_up(phba);
 
             return NULL;
         }
 
         if (pring->sli.sli3.local_getidx == pring->sli.sli3.next_cmdidx)
             return NULL;
     }
 
     return lpfc_cmd_iocb(phba, pring);
 }
 
 /**
  * lpfc_sli_next_iotag - Get an iotag for the iocb
  * @phba: Pointer to HBA context object.
  * @iocbq: Pointer to driver iocb object.
  *
  * This function gets an iotag for the iocb. If there is no unused iotag and
  * the iocbq_lookup_len < 0xffff, this function allocates a bigger iotag_lookup
  * array and assigns a new iotag.
  * The function returns the allocated iotag if successful, else returns zero.
  * Zero is not a valid iotag.
  * The caller is not required to hold any lock.
  **/
 uint16_t
 lpfc_sli_next_iotag(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
 {
     struct lpfc_iocbq **new_arr;
     struct lpfc_iocbq **old_arr;
     size_t new_len;
     struct lpfc_sli *psli = &phba->sli;
     uint16_t iotag;
 
     spin_lock_irq(&phba->hbalock);
     iotag = psli->last_iotag;
     if(++iotag < psli->iocbq_lookup_len) {
         psli->last_iotag = iotag;
         psli->iocbq_lookup[iotag] = iocbq;
         spin_unlock_irq(&phba->hbalock);
         iocbq->iotag = iotag;
         return iotag;
     } else if (psli->iocbq_lookup_len < (0xffff
                        - LPFC_IOCBQ_LOOKUP_INCREMENT)) {
         new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT;
         spin_unlock_irq(&phba->hbalock);
         new_arr = kcalloc(new_len, sizeof(struct lpfc_iocbq *),
                   GFP_KERNEL);
         if (new_arr) {
             spin_lock_irq(&phba->hbalock);
             old_arr = psli->iocbq_lookup;
             if (new_len <= psli->iocbq_lookup_len) {
                 /* highly unprobable case */
                 kfree(new_arr);
                 iotag = psli->last_iotag;
                 if(++iotag < psli->iocbq_lookup_len) {
                     psli->last_iotag = iotag;
                     psli->iocbq_lookup[iotag] = iocbq;
                     spin_unlock_irq(&phba->hbalock);
                     iocbq->iotag = iotag;
                     return iotag;
                 }
                 spin_unlock_irq(&phba->hbalock);
                 return 0;
             }
             if (psli->iocbq_lookup)
                 memcpy(new_arr, old_arr,
                        ((psli->last_iotag  + 1) *
                     sizeof (struct lpfc_iocbq *)));
             psli->iocbq_lookup = new_arr;
             psli->iocbq_lookup_len = new_len;
             psli->last_iotag = iotag;
             psli->iocbq_lookup[iotag] = iocbq;
             spin_unlock_irq(&phba->hbalock);
             iocbq->iotag = iotag;
             kfree(old_arr);
             return iotag;
         }
     } else
         spin_unlock_irq(&phba->hbalock);
 
     lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
             "0318 Failed to allocate IOTAG.last IOTAG is %d\n",
             psli->last_iotag);
 
     return 0;
 }
 
 /**
  * lpfc_sli_submit_iocb - Submit an iocb to the firmware
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  * @iocb: Pointer to iocb slot in the ring.
  * @nextiocb: Pointer to driver iocb object which need to be
  *            posted to firmware.
  *
  * This function is called to post a new iocb to the firmware. This
  * function copies the new iocb to ring iocb slot and updates the
  * ring pointers. It adds the new iocb to txcmplq if there is
  * a completion call back for this iocb else the function will free the
  * iocb object.  The hbalock is asserted held in the code path calling
  * this routine.
  **/
 static void
 lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
         IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
 {
     /*
      * Set up an iotag
      */
     nextiocb->iocb.ulpIoTag = (nextiocb->cmd_cmpl) ? nextiocb->iotag : 0;
 
 
     if (pring->ringno == LPFC_ELS_RING) {
         lpfc_debugfs_slow_ring_trc(phba,
             "IOCB cmd ring:   wd4:x%08x wd6:x%08x wd7:x%08x",
             *(((uint32_t *) &nextiocb->iocb) + 4),
             *(((uint32_t *) &nextiocb->iocb) + 6),
             *(((uint32_t *) &nextiocb->iocb) + 7));
     }
 
     /*
      * Issue iocb command to adapter
      */
     lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, phba->iocb_cmd_size);
     wmb();
     pring->stats.iocb_cmd++;
 
     /*
      * If there is no completion routine to call, we can release the
      * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
      * that have no rsp ring completion, cmd_cmpl MUST be NULL.
      */
     if (nextiocb->cmd_cmpl)
         lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
     else
         __lpfc_sli_release_iocbq(phba, nextiocb);
 
     /*
      * Let the HBA know what IOCB slot will be the next one the
      * driver will put a command into.
      */
     pring->sli.sli3.cmdidx = pring->sli.sli3.next_cmdidx;
     writel(pring->sli.sli3.cmdidx, &phba->host_gp[pring->ringno].cmdPutInx);
 }
 
 /**
  * lpfc_sli_update_full_ring - Update the chip attention register
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  *
  * The caller is not required to hold any lock for calling this function.
  * This function updates the chip attention bits for the ring to inform firmware
  * that there are pending work to be done for this ring and requests an
  * interrupt when there is space available in the ring. This function is
  * called when the driver is unable to post more iocbs to the ring due
  * to unavailability of space in the ring.
  **/
 static void
 lpfc_sli_update_full_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 {
     int ringno = pring->ringno;
 
     pring->flag |= LPFC_CALL_RING_AVAILABLE;
 
     wmb();
 
     /*
      * Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
      * The HBA will tell us when an IOCB entry is available.
      */
     writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
     readl(phba->CAregaddr); /* flush */
 
     pring->stats.iocb_cmd_full++;
 }
 
 /**
  * lpfc_sli_update_ring - Update chip attention register
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  *
  * This function updates the chip attention register bit for the
  * given ring to inform HBA that there is more work to be done
  * in this ring. The caller is not required to hold any lock.
  **/
 static void
 lpfc_sli_update_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 {
     int ringno = pring->ringno;
 
     /*
      * Tell the HBA that there is work to do in this ring.
      */
     if (!(phba->sli3_options & LPFC_SLI3_CRP_ENABLED)) {
         wmb();
         writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
         readl(phba->CAregaddr); /* flush */
     }
 }
 
 /**
  * lpfc_sli_resume_iocb - Process iocbs in the txq
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  *
  * This function is called with hbalock held to post pending iocbs
  * in the txq to the firmware. This function is called when driver
  * detects space available in the ring.
  **/
 static void
 lpfc_sli_resume_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 {
     IOCB_t *iocb;
     struct lpfc_iocbq *nextiocb;
 
     lockdep_assert_held(&phba->hbalock);
 
     /*
      * Check to see if:
      *  (a) there is anything on the txq to send
      *  (b) link is up
      *  (c) link attention events can be processed (fcp ring only)
      *  (d) IOCB processing is not blocked by the outstanding mbox command.
      */
 
     if (lpfc_is_link_up(phba) &&
         (!list_empty(&pring->txq)) &&
         (pring->ringno != LPFC_FCP_RING ||
          phba->sli.sli_flag & LPFC_PROCESS_LA)) {
 
         while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
                (nextiocb = lpfc_sli_ringtx_get(phba, pring)))
             lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
 
         if (iocb)
             lpfc_sli_update_ring(phba, pring);
         else
             lpfc_sli_update_full_ring(phba, pring);
     }
 
     return;
 }
 
 /**
  * lpfc_sli_next_hbq_slot - Get next hbq entry for the HBQ
  * @phba: Pointer to HBA context object.
  * @hbqno: HBQ number.
  *
  * This function is called with hbalock held to get the next
  * available slot for the given HBQ. If there is free slot
  * available for the HBQ it will return pointer to the next available
  * HBQ entry else it will return NULL.
  **/
 static struct lpfc_hbq_entry *
 lpfc_sli_next_hbq_slot(struct lpfc_hba *phba, uint32_t hbqno)
 {
     struct hbq_s *hbqp = &phba->hbqs[hbqno];
 
     lockdep_assert_held(&phba->hbalock);
 
     if (hbqp->next_hbqPutIdx == hbqp->hbqPutIdx &&
         ++hbqp->next_hbqPutIdx >= hbqp->entry_count)
         hbqp->next_hbqPutIdx = 0;
 
     if (unlikely(hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)) {
         uint32_t raw_index = phba->hbq_get[hbqno];
         uint32_t getidx = le32_to_cpu(raw_index);
 
         hbqp->local_hbqGetIdx = getidx;
 
         if (unlikely(hbqp->local_hbqGetIdx >= hbqp->entry_count)) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "1802 HBQ %d: local_hbqGetIdx "
                     "%u is > than hbqp->entry_count %u\n",
                     hbqno, hbqp->local_hbqGetIdx,
                     hbqp->entry_count);
 
             phba->link_state = LPFC_HBA_ERROR;
             return NULL;
         }
 
         if (hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)
             return NULL;
     }
 
     return (struct lpfc_hbq_entry *) phba->hbqs[hbqno].hbq_virt +
             hbqp->hbqPutIdx;
 }
 
 /**
  * lpfc_sli_hbqbuf_free_all - Free all the hbq buffers
  * @phba: Pointer to HBA context object.
  *
  * This function is called with no lock held to free all the
  * hbq buffers while uninitializing the SLI interface. It also
  * frees the HBQ buffers returned by the firmware but not yet
  * processed by the upper layers.
  **/
 void
 lpfc_sli_hbqbuf_free_all(struct lpfc_hba *phba)
 {
     struct lpfc_dmabuf *dmabuf, *next_dmabuf;
     struct hbq_dmabuf *hbq_buf;
     unsigned long flags;
     int i, hbq_count;
 
     hbq_count = lpfc_sli_hbq_count();
     /* Return all memory used by all HBQs */
     spin_lock_irqsave(&phba->hbalock, flags);
     for (i = 0; i < hbq_count; ++i) {
         list_for_each_entry_safe(dmabuf, next_dmabuf,
                 &phba->hbqs[i].hbq_buffer_list, list) {
             hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf);
             list_del(&hbq_buf->dbuf.list);
             (phba->hbqs[i].hbq_free_buffer)(phba, hbq_buf);
         }
         phba->hbqs[i].buffer_count = 0;
     }
 
     /* Mark the HBQs not in use */
     phba->hbq_in_use = 0;
     spin_unlock_irqrestore(&phba->hbalock, flags);
 }
 
 /**
  * lpfc_sli_hbq_to_firmware - Post the hbq buffer to 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. The function will return
  * pointer to the hbq entry if it successfully post the buffer
  * else it will return NULL.
  **/
 static int
 lpfc_sli_hbq_to_firmware(struct lpfc_hba *phba, uint32_t hbqno,
              struct hbq_dmabuf *hbq_buf)
 {
     lockdep_assert_held(&phba->hbalock);
     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;
 
     lockdep_assert_held(&phba->hbalock);
     /* Get next HBQ entry slot to use */
     hbqe = lpfc_sli_next_hbq_slot(phba, hbqno);
     if (hbqe) {
         struct hbq_s *hbqp = &phba->hbqs[hbqno];
 
         hbqe->bde.addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
         hbqe->bde.addrLow  = le32_to_cpu(putPaddrLow(physaddr));
         hbqe->bde.tus.f.bdeSize = hbq_buf->total_size;
         hbqe->bde.tus.f.bdeFlags = 0;
         hbqe->bde.tus.w = le32_to_cpu(hbqe->bde.tus.w);
         hbqe->buffer_tag = le32_to_cpu(hbq_buf->tag);
                 /* Sync SLIM */
         hbqp->hbqPutIdx = hbqp->next_hbqPutIdx;
         writel(hbqp->hbqPutIdx, phba->hbq_put + hbqno);
                 /* flush */
         readl(phba->hbq_put + hbqno);
         list_add_tail(&hbq_buf->dbuf.list, &hbqp->hbq_buffer_list);
         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;
     struct lpfc_queue *hrq;
     struct lpfc_queue *drq;
 
     if (hbqno != LPFC_ELS_HBQ)
         return 1;
     hrq = phba->sli4_hba.hdr_rq;
     drq = phba->sli4_hba.dat_rq;
 
     lockdep_assert_held(&phba->hbalock);
     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(hrq, drq, &hrqe, &drqe);
     if (rc < 0)
         return rc;
     hbq_buf->tag = (rc | (hbqno << 16));
     list_add_tail(&hbq_buf->dbuf.list, &phba->hbqs[hbqno].hbq_buffer_list);
     return 0;
 }
 
 /* HBQ for ELS and CT traffic. */
 static struct lpfc_hbq_init lpfc_els_hbq = {
     .rn = 1,
     .entry_count = 256,
     .mask_count = 0,
     .profile = 0,
     .ring_mask = (1 << LPFC_ELS_RING),
     .buffer_count = 0,
     .init_count = 40,
     .add_count = 40,
 };
 
 /* Array of HBQs */
 struct lpfc_hbq_init *lpfc_hbq_defs[] = {
     &lpfc_els_hbq,
 };
 
 /**
  * lpfc_sli_hbqbuf_fill_hbqs - Post more hbq buffers to HBQ
  * @phba: Pointer to HBA context object.
  * @hbqno: HBQ number.
  * @count: Number of HBQ buffers to be posted.
  *
  * This function is called with no lock held to post more hbq buffers to the
  * given HBQ. The function returns the number of HBQ buffers successfully
  * posted.
  **/
 static int
 lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, uint32_t hbqno, uint32_t count)
 {
     uint32_t i, posted = 0;
     unsigned long flags;
     struct hbq_dmabuf *hbq_buffer;
     LIST_HEAD(hbq_buf_list);
     if (!phba->hbqs[hbqno].hbq_alloc_buffer)
         return 0;
 
     if ((phba->hbqs[hbqno].buffer_count + count) >
         lpfc_hbq_defs[hbqno]->entry_count)
         count = lpfc_hbq_defs[hbqno]->entry_count -
                     phba->hbqs[hbqno].buffer_count;
     if (!count)
         return 0;
     /* Allocate HBQ entries */
     for (i = 0; i < count; i++) {
         hbq_buffer = (phba->hbqs[hbqno].hbq_alloc_buffer)(phba);
         if (!hbq_buffer)
             break;
         list_add_tail(&hbq_buffer->dbuf.list, &hbq_buf_list);
     }
     /* Check whether HBQ is still in use */
     spin_lock_irqsave(&phba->hbalock, flags);
     if (!phba->hbq_in_use)
         goto err;
     while (!list_empty(&hbq_buf_list)) {
         list_remove_head(&hbq_buf_list, hbq_buffer, struct hbq_dmabuf,
                  dbuf.list);
         hbq_buffer->tag = (phba->hbqs[hbqno].buffer_count |
                       (hbqno << 16));
         if (!lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) {
             phba->hbqs[hbqno].buffer_count++;
             posted++;
         } else
             (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
     }
     spin_unlock_irqrestore(&phba->hbalock, flags);
     return posted;
 err:
     spin_unlock_irqrestore(&phba->hbalock, flags);
     while (!list_empty(&hbq_buf_list)) {
         list_remove_head(&hbq_buf_list, hbq_buffer, struct hbq_dmabuf,
                  dbuf.list);
         (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
     }
     return 0;
 }
 
 /**
  * lpfc_sli_hbqbuf_add_hbqs - Post more HBQ buffers to firmware
  * @phba: Pointer to HBA context object.
  * @qno: HBQ number.
  *
  * This function posts more buffers to the HBQ. This function
  * is called with no lock held. The function returns the number of HBQ entries
  * successfully allocated.
  **/
 int
 lpfc_sli_hbqbuf_add_hbqs(struct lpfc_hba *phba, uint32_t qno)
 {
     if (phba->sli_rev == LPFC_SLI_REV4)
         return 0;
     else
         return lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
                      lpfc_hbq_defs[qno]->add_count);
 }
 
 /**
  * lpfc_sli_hbqbuf_init_hbqs - Post initial buffers to the HBQ
  * @phba: Pointer to HBA context object.
  * @qno:  HBQ queue number.
  *
  * This function is called from SLI initialization code path with
  * no lock held to post initial HBQ buffers to firmware. The
  * function returns the number of HBQ entries successfully allocated.
  **/
 static int
 lpfc_sli_hbqbuf_init_hbqs(struct lpfc_hba *phba, uint32_t qno)
 {
     if (phba->sli_rev == LPFC_SLI_REV4)
         return lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
                     lpfc_hbq_defs[qno]->entry_count);
     else
         return lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
                      lpfc_hbq_defs[qno]->init_count);
 }
 
 /*
  * lpfc_sli_hbqbuf_get - Remove the first hbq off of an hbq list
  *
  * 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_rqbuf_get - Remove the first dma buffer off of an RQ list
  * @phba: Pointer to HBA context object.
  * @hrq: HBQ number.
  *
  * This function removes the first RQ buffer on an RQ buffer list and returns a
  * pointer to that buffer. If it finds no buffers on the list it returns NULL.
  **/
 static struct rqb_dmabuf *
 lpfc_sli_rqbuf_get(struct lpfc_hba *phba, struct lpfc_queue *hrq)
 {
     struct lpfc_dmabuf *h_buf;
     struct lpfc_rqb *rqbp;
 
     rqbp = hrq->rqbp;
     list_remove_head(&rqbp->rqb_buffer_list, h_buf,
              struct lpfc_dmabuf, list);
     if (!h_buf)
         return NULL;
     rqbp->buffer_count--;
     return container_of(h_buf, struct rqb_dmabuf, hbuf);
 }
 
 /**
  * lpfc_sli_hbqbuf_find - Find the hbq buffer associated with a tag
  * @phba: Pointer to HBA context object.
  * @tag: Tag of the hbq buffer.
  *
  * This function searches for the hbq buffer associated with the given tag in
  * the hbq buffer list. If it finds the hbq buffer, it returns the hbq_buffer
  * otherwise it returns NULL.
  **/
 static struct hbq_dmabuf *
 lpfc_sli_hbqbuf_find(struct lpfc_hba *phba, uint32_t tag)
 {
     struct lpfc_dmabuf *d_buf;
     struct hbq_dmabuf *hbq_buf;
     uint32_t hbqno;
 
     hbqno = tag >> 16;
     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_TRACE_EVENT,
             "1803 Bad hbq tag. Data: x%x x%x\n",
             tag, phba->hbqs[tag >> 16].buffer_count);
     return NULL;
 }
 
 /**
  * lpfc_sli_free_hbq - Give back the hbq buffer to firmware
  * @phba: Pointer to HBA context object.
  * @hbq_buffer: Pointer to HBQ buffer.
  *
  * This function is called with hbalock. This function gives back
  * the hbq buffer to firmware. If the HBQ does not have space to
  * post the buffer, it will free the buffer.
  **/
 void
 lpfc_sli_free_hbq(struct lpfc_hba *phba, struct hbq_dmabuf *hbq_buffer)
 {
     uint32_t hbqno;
 
     if (hbq_buffer) {
         hbqno = hbq_buffer->tag >> 16;
         if (lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer))
             (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
     }
 }
 
 /**
  * lpfc_sli_chk_mbx_command - Check if the mailbox is a legitimate mailbox
  * @mbxCommand: mailbox command code.
  *
  * This function is called by the mailbox event handler function to verify
  * that the completed mailbox command is a legitimate mailbox command. If the
  * completed mailbox is not known to the function, it will return MBX_SHUTDOWN
  * and the mailbox event handler will take the HBA offline.
  **/
 static int
 lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
 {
     uint8_t ret;
 
     switch (mbxCommand) {
     case MBX_LOAD_SM:
     case MBX_READ_NV:
     case MBX_WRITE_NV:
     case MBX_WRITE_VPARMS:
     case MBX_RUN_BIU_DIAG:
     case MBX_INIT_LINK:
     case MBX_DOWN_LINK:
     case MBX_CONFIG_LINK:
     case MBX_CONFIG_RING:
     case MBX_RESET_RING:
     case MBX_READ_CONFIG:
     case MBX_READ_RCONFIG:
     case MBX_READ_SPARM:
     case MBX_READ_STATUS:
     case MBX_READ_RPI:
     case MBX_READ_XRI:
     case MBX_READ_REV:
     case MBX_READ_LNK_STAT:
     case MBX_REG_LOGIN:
     case MBX_UNREG_LOGIN:
     case MBX_CLEAR_LA:
     case MBX_DUMP_MEMORY:
     case MBX_DUMP_CONTEXT:
     case MBX_RUN_DIAGS:
     case MBX_RESTART:
     case MBX_UPDATE_CFG:
     case MBX_DOWN_LOAD:
     case MBX_DEL_LD_ENTRY:
     case MBX_RUN_PROGRAM:
     case MBX_SET_MASK:
     case MBX_SET_VARIABLE:
     case MBX_UNREG_D_ID:
     case MBX_KILL_BOARD:
     case MBX_CONFIG_FARP:
     case MBX_BEACON:
     case MBX_LOAD_AREA:
     case MBX_RUN_BIU_DIAG64:
     case MBX_CONFIG_PORT:
     case MBX_READ_SPARM64:
     case MBX_READ_RPI64:
     case MBX_REG_LOGIN64:
     case MBX_READ_TOPOLOGY:
     case MBX_WRITE_WWN:
     case MBX_SET_DEBUG:
     case MBX_LOAD_EXP_ROM:
     case MBX_ASYNCEVT_ENABLE:
     case MBX_REG_VPI:
     case MBX_UNREG_VPI:
     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:
     case MBX_READ_EVENT_LOG_STATUS:
     case MBX_READ_EVENT_LOG:
     case MBX_SECURITY_MGMT:
     case MBX_AUTH_PORT:
     case MBX_ACCESS_VDATA:
         ret = mbxCommand;
         break;
     default:
         ret = MBX_SHUTDOWN;
         break;
     }
     return ret;
 }
 
 /**
  * lpfc_sli_wake_mbox_wait - lpfc_sli_issue_mbox_wait mbox completion handler
  * @phba: Pointer to HBA context object.
  * @pmboxq: Pointer to mailbox command.
  *
  * This is completion handler function for mailbox commands issued from
  * lpfc_sli_issue_mbox_wait function. This function is called by the
  * mailbox event handler function with no lock held. This function
  * will wake up thread waiting on the wait queue pointed by context1
  * of the mailbox.
  **/
 void
 lpfc_sli_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
 {
     unsigned long drvr_flag;
     struct completion *pmbox_done;
 
     /*
      * If pmbox_done is empty, the driver thread gave up waiting and
      * continued running.
      */
     pmboxq->mbox_flag |= LPFC_MBX_WAKE;
     spin_lock_irqsave(&phba->hbalock, drvr_flag);
     pmbox_done = (struct completion *)pmboxq->context3;
     if (pmbox_done)
         complete(pmbox_done);
     spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
     return;
 }
 
 static void
 __lpfc_sli_rpi_release(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 {
     unsigned long iflags;
 
     if (ndlp->nlp_flag & NLP_RELEASE_RPI) {
         lpfc_sli4_free_rpi(vport->phba, ndlp->nlp_rpi);
         spin_lock_irqsave(&ndlp->lock, iflags);
         ndlp->nlp_flag &= ~NLP_RELEASE_RPI;
         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
         spin_unlock_irqrestore(&ndlp->lock, iflags);
     }
     ndlp->nlp_flag &= ~NLP_UNREG_INP;
 }
 
 void
 lpfc_sli_rpi_release(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
 {
     __lpfc_sli_rpi_release(vport, ndlp);
 }
 
 /**
  * lpfc_sli_def_mbox_cmpl - Default mailbox completion handler
  * @phba: Pointer to HBA context object.
  * @pmb: Pointer to mailbox object.
  *
  * This function is the default mailbox completion handler. It
  * frees the memory resources associated with the completed mailbox
  * command. If the completed command is a REG_LOGIN mailbox command,
  * this function will issue a UREG_LOGIN to re-claim the RPI.
  **/
 void
 lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     struct lpfc_vport  *vport = pmb->vport;
     struct lpfc_nodelist *ndlp;
     struct Scsi_Host *shost;
     uint16_t rpi, vpi;
     int rc;
 
     /*
      * 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->u.mb.mbxCommand == MBX_REG_LOGIN64 &&
         !pmb->u.mb.mbxStatus) {
         rpi = pmb->u.mb.un.varWords[0];
         vpi = pmb->u.mb.un.varRegLogin.vpi;
         if (phba->sli_rev == LPFC_SLI_REV4)
             vpi -= phba->sli4_hba.max_cfg_param.vpi_base;
         lpfc_unreg_login(phba, vpi, rpi, pmb);
         pmb->vport = vport;
         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
         if (rc != MBX_NOT_FINISHED)
             return;
     }
 
     if ((pmb->u.mb.mbxCommand == MBX_REG_VPI) &&
         !(phba->pport->load_flag & FC_UNLOADING) &&
         !pmb->u.mb.mbxStatus) {
         shost = lpfc_shost_from_vport(vport);
         spin_lock_irq(shost->host_lock);
         vport->vpi_state |= LPFC_VPI_REGISTERED;
         vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
         spin_unlock_irq(shost->host_lock);
     }
 
     if (pmb->u.mb.mbxCommand == MBX_REG_LOGIN64) {
         ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
         lpfc_nlp_put(ndlp);
     }
 
     if (pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) {
         ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
 
         /* Check to see if there are any deferred events to process */
         if (ndlp) {
             lpfc_printf_vlog(
                 vport,
                 KERN_INFO, LOG_MBOX | LOG_DISCOVERY,
                 "1438 UNREG cmpl deferred mbox x%x "
                 "on NPort x%x Data: x%x x%x x%px x%x x%x\n",
                 ndlp->nlp_rpi, ndlp->nlp_DID,
                 ndlp->nlp_flag, ndlp->nlp_defer_did,
                 ndlp, vport->load_flag, kref_read(&ndlp->kref));
 
             if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
                 (ndlp->nlp_defer_did != NLP_EVT_NOTHING_PENDING)) {
                 ndlp->nlp_flag &= ~NLP_UNREG_INP;
                 ndlp->nlp_defer_did = NLP_EVT_NOTHING_PENDING;
                 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
             } else {
                 __lpfc_sli_rpi_release(vport, ndlp);
             }
 
             /* The unreg_login mailbox is complete and had a
              * reference that has to be released.  The PLOGI
              * got its own ref.
              */
             lpfc_nlp_put(ndlp);
             pmb->ctx_ndlp = NULL;
         }
     }
 
     /* This nlp_put pairs with lpfc_sli4_resume_rpi */
     if (pmb->u.mb.mbxCommand == MBX_RESUME_RPI) {
         ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
         lpfc_nlp_put(ndlp);
     }
 
     /* Check security permission status on INIT_LINK mailbox command */
     if ((pmb->u.mb.mbxCommand == MBX_INIT_LINK) &&
         (pmb->u.mb.mbxStatus == MBXERR_SEC_NO_PERMISSION))
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2860 SLI authentication is required "
                 "for INIT_LINK but has not done yet\n");
 
     if (bf_get(lpfc_mqe_command, &pmb->u.mqe) == MBX_SLI4_CONFIG)
         lpfc_sli4_mbox_cmd_free(phba, pmb);
     else
         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
 }
  /**
  * lpfc_sli4_unreg_rpi_cmpl_clr - mailbox completion handler
  * @phba: Pointer to HBA context object.
  * @pmb: Pointer to mailbox object.
  *
  * This function is the unreg rpi mailbox completion handler. It
  * frees the memory resources associated with the completed mailbox
  * command. An additional reference is put on the ndlp to prevent
  * lpfc_nlp_release from freeing the rpi bit in the bitmask before
  * the unreg mailbox command completes, this routine puts the
  * reference back.
  *
  **/
 void
 lpfc_sli4_unreg_rpi_cmpl_clr(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     struct lpfc_vport  *vport = pmb->vport;
     struct lpfc_nodelist *ndlp;
 
     ndlp = pmb->ctx_ndlp;
     if (pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) {
         if (phba->sli_rev == LPFC_SLI_REV4 &&
             (bf_get(lpfc_sli_intf_if_type,
              &phba->sli4_hba.sli_intf) >=
              LPFC_SLI_INTF_IF_TYPE_2)) {
             if (ndlp) {
                 lpfc_printf_vlog(
                      vport, KERN_INFO, LOG_MBOX | LOG_SLI,
                      "0010 UNREG_LOGIN vpi:%x "
                      "rpi:%x DID:%x defer x%x flg x%x "
                      "x%px\n",
                      vport->vpi, ndlp->nlp_rpi,
                      ndlp->nlp_DID, ndlp->nlp_defer_did,
                      ndlp->nlp_flag,
                      ndlp);
                 ndlp->nlp_flag &= ~NLP_LOGO_ACC;
 
                 /* Check to see if there are any deferred
                  * events to process
                  */
                 if ((ndlp->nlp_flag & NLP_UNREG_INP) &&
                     (ndlp->nlp_defer_did !=
                     NLP_EVT_NOTHING_PENDING)) {
                     lpfc_printf_vlog(
                         vport, KERN_INFO, LOG_DISCOVERY,
                         "4111 UNREG cmpl deferred "
                         "clr x%x on "
                         "NPort x%x Data: x%x x%px\n",
                         ndlp->nlp_rpi, ndlp->nlp_DID,
                         ndlp->nlp_defer_did, ndlp);
                     ndlp->nlp_flag &= ~NLP_UNREG_INP;
                     ndlp->nlp_defer_did =
                         NLP_EVT_NOTHING_PENDING;
                     lpfc_issue_els_plogi(
                         vport, ndlp->nlp_DID, 0);
                 } else {
                     __lpfc_sli_rpi_release(vport, ndlp);
                 }
                 lpfc_nlp_put(ndlp);
             }
         }
     }
 
     mempool_free(pmb, phba->mbox_mem_pool);
 }
 
 /**
  * lpfc_sli_handle_mb_event - Handle mailbox completions from firmware
  * @phba: Pointer to HBA context object.
  *
  * This function is called with no lock held. This function processes all
  * the completed mailbox commands and gives it to upper layers. The interrupt
  * service routine processes mailbox completion interrupt and adds completed
  * mailbox commands to the mboxq_cmpl queue and signals the worker thread.
  * Worker thread call lpfc_sli_handle_mb_event, which will return the
  * completed mailbox commands in mboxq_cmpl queue to the upper layers. This
  * function returns the mailbox commands to the upper layer by calling the
  * completion handler function of each mailbox.
  **/
 int
 lpfc_sli_handle_mb_event(struct lpfc_hba *phba)
 {
     MAILBOX_t *pmbox;
     LPFC_MBOXQ_t *pmb;
     int rc;
     LIST_HEAD(cmplq);
 
     phba->sli.slistat.mbox_event++;
 
     /* Get all completed mailboxe buffers into the cmplq */
     spin_lock_irq(&phba->hbalock);
     list_splice_init(&phba->sli.mboxq_cmpl, &cmplq);
     spin_unlock_irq(&phba->hbalock);
 
     /* Get a Mailbox buffer to setup mailbox commands for callback */
     do {
         list_remove_head(&cmplq, pmb, LPFC_MBOXQ_t, list);
         if (pmb == NULL)
             break;
 
         pmbox = &pmb->u.mb;
 
         if (pmbox->mbxCommand != MBX_HEARTBEAT) {
             if (pmb->vport) {
                 lpfc_debugfs_disc_trc(pmb->vport,
                     LPFC_DISC_TRC_MBOX_VPORT,
                     "MBOX cmpl vport: cmd:x%x mb:x%x x%x",
                     (uint32_t)pmbox->mbxCommand,
                     pmbox->un.varWords[0],
                     pmbox->un.varWords[1]);
             }
             else {
                 lpfc_debugfs_disc_trc(phba->pport,
                     LPFC_DISC_TRC_MBOX,
                     "MBOX cmpl:       cmd:x%x mb:x%x x%x",
                     (uint32_t)pmbox->mbxCommand,
                     pmbox->un.varWords[0],
                     pmbox->un.varWords[1]);
             }
         }
 
         /*
          * It is a fatal error if unknown mbox command completion.
          */
         if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
             MBX_SHUTDOWN) {
             /* Unknown mailbox command compl */
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "(%d):0323 Unknown Mailbox command "
                     "x%x (x%x/x%x) Cmpl\n",
                     pmb->vport ? pmb->vport->vpi :
                     LPFC_VPORT_UNKNOWN,
                     pmbox->mbxCommand,
                     lpfc_sli_config_mbox_subsys_get(phba,
                                     pmb),
                     lpfc_sli_config_mbox_opcode_get(phba,
                                     pmb));
             phba->link_state = LPFC_HBA_ERROR;
             phba->work_hs = HS_FFER3;
             lpfc_handle_eratt(phba);
             continue;
         }
 
         if (pmbox->mbxStatus) {
             phba->sli.slistat.mbox_stat_err++;
             if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
                 /* Mbox cmd cmpl error - RETRYing */
                 lpfc_printf_log(phba, KERN_INFO,
                     LOG_MBOX | LOG_SLI,
                     "(%d):0305 Mbox cmd cmpl "
                     "error - RETRYing Data: x%x "
                     "(x%x/x%x) x%x x%x x%x\n",
                     pmb->vport ? pmb->vport->vpi :
                     LPFC_VPORT_UNKNOWN,
                     pmbox->mbxCommand,
                     lpfc_sli_config_mbox_subsys_get(phba,
                                     pmb),
                     lpfc_sli_config_mbox_opcode_get(phba,
                                     pmb),
                     pmbox->mbxStatus,
                     pmbox->un.varWords[0],
                     pmb->vport ? pmb->vport->port_state :
                     LPFC_VPORT_UNKNOWN);
                 pmbox->mbxStatus = 0;
                 pmbox->mbxOwner = OWN_HOST;
                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
                 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 (x%x/x%x) Cmpl %ps "
                 "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\n",
                 pmb->vport ? pmb->vport->vpi : 0,
                 pmbox->mbxCommand,
                 lpfc_sli_config_mbox_subsys_get(phba, pmb),
                 lpfc_sli_config_mbox_opcode_get(phba, pmb),
                 pmb->mbox_cmpl,
                 *((uint32_t *) pmbox),
                 pmbox->un.varWords[0],
                 pmbox->un.varWords[1],
                 pmbox->un.varWords[2],
                 pmbox->un.varWords[3],
                 pmbox->un.varWords[4],
                 pmbox->un.varWords[5],
                 pmbox->un.varWords[6],
                 pmbox->un.varWords[7],
                 pmbox->un.varWords[8],
                 pmbox->un.varWords[9],
                 pmbox->un.varWords[10]);
 
         if (pmb->mbox_cmpl)
             pmb->mbox_cmpl(phba,pmb);
     } while (1);
     return 0;
 }
 
 /**
  * lpfc_sli_get_buff - Get the buffer associated with the buffer tag
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  * @tag: buffer tag.
  *
  * This function is called with no lock held. When QUE_BUFTAG_BIT bit
  * is set in the tag the buffer is posted for a particular exchange,
  * the function will return the buffer without replacing the buffer.
  * If the buffer is for unsolicited ELS or CT traffic, this function
  * returns the buffer and also posts another buffer to the firmware.
  **/
 static struct lpfc_dmabuf *
 lpfc_sli_get_buff(struct lpfc_hba *phba,
           struct lpfc_sli_ring *pring,
           uint32_t tag)
 {
     struct hbq_dmabuf *hbq_entry;
 
     if (tag & QUE_BUFTAG_BIT)
         return lpfc_sli_ring_taggedbuf_get(phba, pring, tag);
     hbq_entry = lpfc_sli_hbqbuf_find(phba, tag);
     if (!hbq_entry)
         return NULL;
     return &hbq_entry->dbuf;
 }
 
 /**
  * lpfc_nvme_unsol_ls_handler - Process an unsolicited event data buffer
  *                              containing a NVME LS request.
  * @phba: pointer to lpfc hba data structure.
  * @piocb: pointer to the iocbq struct representing the sequence starting
  *        frame.
  *
  * This routine initially validates the NVME LS, validates there is a login
  * with the port that sent the LS, and then calls the appropriate nvme host
  * or target LS request handler.
  **/
 static void
 lpfc_nvme_unsol_ls_handler(struct lpfc_hba *phba, struct lpfc_iocbq *piocb)
 {
     struct lpfc_nodelist *ndlp;
     struct lpfc_dmabuf *d_buf;
     struct hbq_dmabuf *nvmebuf;
     struct fc_frame_header *fc_hdr;
     struct lpfc_async_xchg_ctx *axchg = NULL;
     char *failwhy = NULL;
     uint32_t oxid, sid, did, fctl, size;
     int ret = 1;
 
     d_buf = piocb->cmd_dmabuf;
 
     nvmebuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
     fc_hdr = nvmebuf->hbuf.virt;
     oxid = be16_to_cpu(fc_hdr->fh_ox_id);
     sid = sli4_sid_from_fc_hdr(fc_hdr);
     did = sli4_did_from_fc_hdr(fc_hdr);
     fctl = (fc_hdr->fh_f_ctl[0] << 16 |
         fc_hdr->fh_f_ctl[1] << 8 |
         fc_hdr->fh_f_ctl[2]);
     size = bf_get(lpfc_rcqe_length, &nvmebuf->cq_event.cqe.rcqe_cmpl);
 
     lpfc_nvmeio_data(phba, "NVME LS    RCV: xri x%x sz %d from %06x\n",
              oxid, size, sid);
 
     if (phba->pport->load_flag & FC_UNLOADING) {
         failwhy = "Driver Unloading";
     } else if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) {
         failwhy = "NVME FC4 Disabled";
     } else if (!phba->nvmet_support && !phba->pport->localport) {
         failwhy = "No Localport";
     } else if (phba->nvmet_support && !phba->targetport) {
         failwhy = "No Targetport";
     } else if (unlikely(fc_hdr->fh_r_ctl != FC_RCTL_ELS4_REQ)) {
         failwhy = "Bad NVME LS R_CTL";
     } else if (unlikely((fctl & 0x00FF0000) !=
             (FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT))) {
         failwhy = "Bad NVME LS F_CTL";
     } else {
         axchg = kzalloc(sizeof(*axchg), GFP_ATOMIC);
         if (!axchg)
             failwhy = "No CTX memory";
     }
 
     if (unlikely(failwhy)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "6154 Drop NVME LS: SID %06X OXID x%X: %s\n",
                 sid, oxid, failwhy);
         goto out_fail;
     }
 
     /* validate the source of the LS is logged in */
     ndlp = lpfc_findnode_did(phba->pport, sid);
     if (!ndlp ||
         ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
          (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
         lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
                 "6216 NVME Unsol rcv: No ndlp: "
                 "NPort_ID x%x oxid x%x\n",
                 sid, oxid);
         goto out_fail;
     }
 
     axchg->phba = phba;
     axchg->ndlp = ndlp;
     axchg->size = size;
     axchg->oxid = oxid;
     axchg->sid = sid;
     axchg->wqeq = NULL;
     axchg->state = LPFC_NVME_STE_LS_RCV;
     axchg->entry_cnt = 1;
     axchg->rqb_buffer = (void *)nvmebuf;
     axchg->hdwq = &phba->sli4_hba.hdwq[0];
     axchg->payload = nvmebuf->dbuf.virt;
     INIT_LIST_HEAD(&axchg->list);
 
     if (phba->nvmet_support) {
         ret = lpfc_nvmet_handle_lsreq(phba, axchg);
         spin_lock_irq(&ndlp->lock);
         if (!ret && !(ndlp->fc4_xpt_flags & NLP_XPT_HAS_HH)) {
             ndlp->fc4_xpt_flags |= NLP_XPT_HAS_HH;
             spin_unlock_irq(&ndlp->lock);
 
             /* This reference is a single occurrence to hold the
              * node valid until the nvmet transport calls
              * host_release.
              */
             if (!lpfc_nlp_get(ndlp))
                 goto out_fail;
 
             lpfc_printf_log(phba, KERN_ERR, LOG_NODE,
                     "6206 NVMET unsol ls_req ndlp x%px "
                     "DID x%x xflags x%x refcnt %d\n",
                     ndlp, ndlp->nlp_DID,
                     ndlp->fc4_xpt_flags,
                     kref_read(&ndlp->kref));
         } else {
             spin_unlock_irq(&ndlp->lock);
         }
     } else {
         ret = lpfc_nvme_handle_lsreq(phba, axchg);
     }
 
     /* if zero, LS was successfully handled. If non-zero, LS not handled */
     if (!ret)
         return;
 
 out_fail:
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "6155 Drop NVME LS from DID %06X: SID %06X OXID x%X "
             "NVMe%s handler failed %d\n",
             did, sid, oxid,
             (phba->nvmet_support) ? "T" : "I", ret);
 
     /* recycle receive buffer */
     lpfc_in_buf_free(phba, &nvmebuf->dbuf);
 
     /* If start of new exchange, abort it */
     if (axchg && (fctl & FC_FC_FIRST_SEQ && !(fctl & FC_FC_EX_CTX)))
         ret = lpfc_nvme_unsol_ls_issue_abort(phba, axchg, sid, oxid);
 
     if (ret)
         kfree(axchg);
 }
 
 /**
  * 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;
 
     switch (fch_type) {
     case FC_TYPE_NVME:
         lpfc_nvme_unsol_ls_handler(phba, saveq);
         return 1;
     default:
         break;
     }
 
     /* 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;
 }
 
 static void
 lpfc_sli_prep_unsol_wqe(struct lpfc_hba *phba,
             struct lpfc_iocbq *saveq)
 {
     IOCB_t *irsp;
     union lpfc_wqe128 *wqe;
     u16 i = 0;
 
     irsp = &saveq->iocb;
     wqe = &saveq->wqe;
 
     /* Fill wcqe with the IOCB status fields */
     bf_set(lpfc_wcqe_c_status, &saveq->wcqe_cmpl, irsp->ulpStatus);
     saveq->wcqe_cmpl.word3 = irsp->ulpBdeCount;
     saveq->wcqe_cmpl.parameter = irsp->un.ulpWord[4];
     saveq->wcqe_cmpl.total_data_placed = irsp->unsli3.rcvsli3.acc_len;
 
     /* Source ID */
     bf_set(els_rsp64_sid, &wqe->xmit_els_rsp, irsp->un.rcvels.parmRo);
 
     /* rx-id of the response frame */
     bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com, irsp->ulpContext);
 
     /* ox-id of the frame */
     bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
            irsp->unsli3.rcvsli3.ox_id);
 
     /* DID */
     bf_set(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest,
            irsp->un.rcvels.remoteID);
 
     /* unsol data len */
     for (i = 0; i < irsp->ulpBdeCount; i++) {
         struct lpfc_hbq_entry *hbqe = NULL;
 
         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
             if (i == 0) {
                 hbqe = (struct lpfc_hbq_entry *)
                     &irsp->un.ulpWord[0];
                 saveq->wqe.gen_req.bde.tus.f.bdeSize =
                     hbqe->bde.tus.f.bdeSize;
             } else if (i == 1) {
                 hbqe = (struct lpfc_hbq_entry *)
                     &irsp->unsli3.sli3Words[4];
                 saveq->unsol_rcv_len = hbqe->bde.tus.f.bdeSize;
             }
         }
     }
 }
 
 /**
  * lpfc_sli_process_unsol_iocb - Unsolicited iocb handler
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  * @saveq: Pointer to the unsolicited iocb.
  *
  * This function is called with no lock held by the ring event handler
  * when there is an unsolicited iocb posted to the response ring by the
  * firmware. This function gets the buffer associated with the iocbs
  * and calls the event handler for the ring. This function handles both
  * qring buffers and hbq buffers.
  * When the function returns 1 the caller can free the iocb object otherwise
  * upper layer functions will free the iocb objects.
  **/
 static int
 lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                 struct lpfc_iocbq *saveq)
 {
     IOCB_t           * irsp;
     WORD5            * w5p;
     dma_addr_t   paddr;
     uint32_t           Rctl, Type;
     struct lpfc_iocbq *iocbq;
     struct lpfc_dmabuf *dmzbuf;
 
     irsp = &saveq->iocb;
     saveq->vport = phba->pport;
 
     if (irsp->ulpCommand == CMD_ASYNC_STATUS) {
         if (pring->lpfc_sli_rcv_async_status)
             pring->lpfc_sli_rcv_async_status(phba, pring, saveq);
         else
             lpfc_printf_log(phba,
                     KERN_WARNING,
                     LOG_SLI,
                     "0316 Ring %d handler: unexpected "
                     "ASYNC_STATUS iocb received evt_code "
                     "0x%x\n",
                     pring->ringno,
                     irsp->un.asyncstat.evt_code);
         return 1;
     }
 
     if ((irsp->ulpCommand == CMD_IOCB_RET_XRI64_CX) &&
         (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) {
         if (irsp->ulpBdeCount > 0) {
             dmzbuf = lpfc_sli_get_buff(phba, pring,
                            irsp->un.ulpWord[3]);
             lpfc_in_buf_free(phba, dmzbuf);
         }
 
         if (irsp->ulpBdeCount > 1) {
             dmzbuf = lpfc_sli_get_buff(phba, pring,
                            irsp->unsli3.sli3Words[3]);
             lpfc_in_buf_free(phba, dmzbuf);
         }
 
         if (irsp->ulpBdeCount > 2) {
             dmzbuf = lpfc_sli_get_buff(phba, pring,
                            irsp->unsli3.sli3Words[7]);
             lpfc_in_buf_free(phba, dmzbuf);
         }
 
         return 1;
     }
 
     if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
         if (irsp->ulpBdeCount != 0) {
             saveq->cmd_dmabuf = lpfc_sli_get_buff(phba, pring,
                         irsp->un.ulpWord[3]);
             if (!saveq->cmd_dmabuf)
                 lpfc_printf_log(phba,
                     KERN_ERR,
                     LOG_SLI,
                     "0341 Ring %d Cannot find buffer for "
                     "an unsolicited iocb. tag 0x%x\n",
                     pring->ringno,
                     irsp->un.ulpWord[3]);
         }
         if (irsp->ulpBdeCount == 2) {
             saveq->bpl_dmabuf = lpfc_sli_get_buff(phba, pring,
                         irsp->unsli3.sli3Words[7]);
             if (!saveq->bpl_dmabuf)
                 lpfc_printf_log(phba,
                     KERN_ERR,
                     LOG_SLI,
                     "0342 Ring %d Cannot find buffer for an"
                     " unsolicited iocb. tag 0x%x\n",
                     pring->ringno,
                     irsp->unsli3.sli3Words[7]);
         }
         list_for_each_entry(iocbq, &saveq->list, list) {
             irsp = &iocbq->iocb;
             if (irsp->ulpBdeCount != 0) {
                 iocbq->cmd_dmabuf = lpfc_sli_get_buff(phba,
                             pring,
                             irsp->un.ulpWord[3]);
                 if (!iocbq->cmd_dmabuf)
                     lpfc_printf_log(phba,
                         KERN_ERR,
                         LOG_SLI,
                         "0343 Ring %d Cannot find "
                         "buffer for an unsolicited iocb"
                         ". tag 0x%x\n", pring->ringno,
                         irsp->un.ulpWord[3]);
             }
             if (irsp->ulpBdeCount == 2) {
                 iocbq->bpl_dmabuf = lpfc_sli_get_buff(phba,
                         pring,
                         irsp->unsli3.sli3Words[7]);
                 if (!iocbq->bpl_dmabuf)
                     lpfc_printf_log(phba,
                         KERN_ERR,
                         LOG_SLI,
                         "0344 Ring %d Cannot find "
                         "buffer for an unsolicited "
                         "iocb. tag 0x%x\n",
                         pring->ringno,
                         irsp->unsli3.sli3Words[7]);
             }
         }
     } else {
         paddr = getPaddr(irsp->un.cont64[0].addrHigh,
                  irsp->un.cont64[0].addrLow);
         saveq->cmd_dmabuf = lpfc_sli_ringpostbuf_get(phba, pring,
                                  paddr);
         if (irsp->ulpBdeCount == 2) {
             paddr = getPaddr(irsp->un.cont64[1].addrHigh,
                      irsp->un.cont64[1].addrLow);
             saveq->bpl_dmabuf = lpfc_sli_ringpostbuf_get(phba,
                                    pring,
                                    paddr);
         }
     }
 
     if (irsp->ulpBdeCount != 0 &&
         (irsp->ulpCommand == CMD_IOCB_RCV_CONT64_CX ||
          irsp->ulpStatus == IOSTAT_INTERMED_RSP)) {
         int found = 0;
 
         /* search continue save q for same XRI */
         list_for_each_entry(iocbq, &pring->iocb_continue_saveq, clist) {
             if (iocbq->iocb.unsli3.rcvsli3.ox_id ==
                 saveq->iocb.unsli3.rcvsli3.ox_id) {
                 list_add_tail(&saveq->list, &iocbq->list);
                 found = 1;
                 break;
             }
         }
         if (!found)
             list_add_tail(&saveq->clist,
                       &pring->iocb_continue_saveq);
 
         if (saveq->iocb.ulpStatus != IOSTAT_INTERMED_RSP) {
             list_del_init(&iocbq->clist);
             saveq = iocbq;
             irsp = &saveq->iocb;
         } else {
             return 0;
         }
     }
     if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX) ||
         (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX) ||
         (irsp->ulpCommand == CMD_IOCB_RCV_ELS64_CX)) {
         Rctl = FC_RCTL_ELS_REQ;
         Type = FC_TYPE_ELS;
     } else {
         w5p = (WORD5 *)&(saveq->iocb.un.ulpWord[5]);
         Rctl = w5p->hcsw.Rctl;
         Type = w5p->hcsw.Type;
 
         /* Firmware Workaround */
         if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
             (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX ||
              irsp->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
             Rctl = FC_RCTL_ELS_REQ;
             Type = FC_TYPE_ELS;
             w5p->hcsw.Rctl = Rctl;
             w5p->hcsw.Type = Type;
         }
     }
 
     if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
         (irsp->ulpCommand == CMD_IOCB_RCV_ELS64_CX ||
         irsp->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
         if (irsp->unsli3.rcvsli3.vpi == 0xffff)
             saveq->vport = phba->pport;
         else
             saveq->vport = lpfc_find_vport_by_vpid(phba,
                            irsp->unsli3.rcvsli3.vpi);
     }
 
     /* Prepare WQE with Unsol frame */
     lpfc_sli_prep_unsol_wqe(phba, saveq);
 
     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;
 }
 
 /**
  * lpfc_sli_iocbq_lookup - Find command iocb for the given response iocb
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  * @prspiocb: Pointer to response iocb object.
  *
  * This function looks up the iocb_lookup table to get the command iocb
  * corresponding to the given response iocb using the iotag of the
  * response iocb. The driver calls this function with the hbalock held
  * for SLI3 ports or the ring lock held for SLI4 ports.
  * This function returns the command iocb object if it finds the command
  * iocb else returns NULL.
  **/
 static struct lpfc_iocbq *
 lpfc_sli_iocbq_lookup(struct lpfc_hba *phba,
               struct lpfc_sli_ring *pring,
               struct lpfc_iocbq *prspiocb)
 {
     struct lpfc_iocbq *cmd_iocb = NULL;
     u16 iotag;
 
     if (phba->sli_rev == LPFC_SLI_REV4)
         iotag = get_wqe_reqtag(prspiocb);
     else
         iotag = prspiocb->iocb.ulpIoTag;
 
     if (iotag != 0 && iotag <= phba->sli.last_iotag) {
         cmd_iocb = phba->sli.iocbq_lookup[iotag];
         if (cmd_iocb->cmd_flag & LPFC_IO_ON_TXCMPLQ) {
             /* remove from txcmpl queue list */
             list_del_init(&cmd_iocb->list);
             cmd_iocb->cmd_flag &= ~LPFC_IO_ON_TXCMPLQ;
             pring->txcmplq_cnt--;
             return cmd_iocb;
         }
     }
 
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "0317 iotag x%x is out of "
             "range: max iotag x%x\n",
             iotag, phba->sli.last_iotag);
     return NULL;
 }
 
 /**
  * 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. The driver calls this function with
  * the ring lock held because this function is an SLI4 port only helper.
  * 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 = NULL;
 
     if (iotag != 0 && iotag <= phba->sli.last_iotag) {
         cmd_iocb = phba->sli.iocbq_lookup[iotag];
         if (cmd_iocb->cmd_flag & LPFC_IO_ON_TXCMPLQ) {
             /* remove from txcmpl queue list */
             list_del_init(&cmd_iocb->list);
             cmd_iocb->cmd_flag &= ~LPFC_IO_ON_TXCMPLQ;
             pring->txcmplq_cnt--;
             return cmd_iocb;
         }
     }
 
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "0372 iotag x%x lookup error: max iotag (x%x) "
             "cmd_flag x%x\n",
             iotag, phba->sli.last_iotag,
             cmd_iocb ? cmd_iocb->cmd_flag : 0xffff);
     return NULL;
 }
 
 /**
  * lpfc_sli_process_sol_iocb - process solicited iocb completion
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  * @saveq: Pointer to the response iocb to be processed.
  *
  * This function is called by the ring event handler for non-fcp
  * rings when there is a new response iocb in the response ring.
  * The caller is not required to hold any locks. This function
  * gets the command iocb associated with the response iocb and
  * calls the completion handler for the command iocb. If there
  * is no completion handler, the function will free the resources
  * associated with command iocb. If the response iocb is for
  * an already aborted command iocb, the status of the completion
  * is changed to IOSTAT_LOCAL_REJECT/IOERR_SLI_ABORTED.
  * This function always returns 1.
  **/
 static int
 lpfc_sli_process_sol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
               struct lpfc_iocbq *saveq)
 {
     struct lpfc_iocbq *cmdiocbp;
     unsigned long iflag;
     u32 ulp_command, ulp_status, ulp_word4, ulp_context, iotag;
 
     if (phba->sli_rev == LPFC_SLI_REV4)
         spin_lock_irqsave(&pring->ring_lock, iflag);
     else
         spin_lock_irqsave(&phba->hbalock, iflag);
     cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq);
     if (phba->sli_rev == LPFC_SLI_REV4)
         spin_unlock_irqrestore(&pring->ring_lock, iflag);
     else
         spin_unlock_irqrestore(&phba->hbalock, iflag);
 
     ulp_command = get_job_cmnd(phba, saveq);
     ulp_status = get_job_ulpstatus(phba, saveq);
     ulp_word4 = get_job_word4(phba, saveq);
     ulp_context = get_job_ulpcontext(phba, saveq);
     if (phba->sli_rev == LPFC_SLI_REV4)
         iotag = get_wqe_reqtag(saveq);
     else
         iotag = saveq->iocb.ulpIoTag;
 
     if (cmdiocbp) {
         ulp_command = get_job_cmnd(phba, cmdiocbp);
         if (cmdiocbp->cmd_cmpl) {
             /*
              * If an ELS command failed send an event to mgmt
              * application.
              */
             if (ulp_status &&
                  (pring->ringno == LPFC_ELS_RING) &&
                  (ulp_command == CMD_ELS_REQUEST64_CR))
                 lpfc_send_els_failure_event(phba,
                     cmdiocbp, saveq);
 
             /*
              * Post all ELS completions to the worker thread.
              * All other are passed to the completion callback.
              */
             if (pring->ringno == LPFC_ELS_RING) {
                 if ((phba->sli_rev < LPFC_SLI_REV4) &&
                     (cmdiocbp->cmd_flag &
                             LPFC_DRIVER_ABORTED)) {
                     spin_lock_irqsave(&phba->hbalock,
                               iflag);
                     cmdiocbp->cmd_flag &=
                         ~LPFC_DRIVER_ABORTED;
                     spin_unlock_irqrestore(&phba->hbalock,
                                    iflag);
                     saveq->iocb.ulpStatus =
                         IOSTAT_LOCAL_REJECT;
                     saveq->iocb.un.ulpWord[4] =
                         IOERR_SLI_ABORTED;
 
                     /* Firmware could still be in progress
                      * of DMAing payload, so don't free data
                      * buffer till after a hbeat.
                      */
                     spin_lock_irqsave(&phba->hbalock,
                               iflag);
                     saveq->cmd_flag |= LPFC_DELAY_MEM_FREE;
                     spin_unlock_irqrestore(&phba->hbalock,
                                    iflag);
                 }
                 if (phba->sli_rev == LPFC_SLI_REV4) {
                     if (saveq->cmd_flag &
                         LPFC_EXCHANGE_BUSY) {
                         /* Set cmdiocb flag for the
                          * exchange busy so sgl (xri)
                          * will not be released until
                          * the abort xri is received
                          * from hba.
                          */
                         spin_lock_irqsave(
                             &phba->hbalock, iflag);
                         cmdiocbp->cmd_flag |=
                             LPFC_EXCHANGE_BUSY;
                         spin_unlock_irqrestore(
                             &phba->hbalock, iflag);
                     }
                     if (cmdiocbp->cmd_flag &
                         LPFC_DRIVER_ABORTED) {
                         /*
                          * Clear LPFC_DRIVER_ABORTED
                          * bit in case it was driver
                          * initiated abort.
                          */
                         spin_lock_irqsave(
                             &phba->hbalock, iflag);
                         cmdiocbp->cmd_flag &=
                             ~LPFC_DRIVER_ABORTED;
                         spin_unlock_irqrestore(
                             &phba->hbalock, iflag);
                         set_job_ulpstatus(cmdiocbp,
                                   IOSTAT_LOCAL_REJECT);
                         set_job_ulpword4(cmdiocbp,
                                  IOERR_ABORT_REQUESTED);
                         /*
                          * For SLI4, irspiocb contains
                          * NO_XRI in sli_xritag, it
                          * shall not affect releasing
                          * sgl (xri) process.
                          */
                         set_job_ulpstatus(saveq,
                                   IOSTAT_LOCAL_REJECT);
                         set_job_ulpword4(saveq,
                                  IOERR_SLI_ABORTED);
                         spin_lock_irqsave(
                             &phba->hbalock, iflag);
                         saveq->cmd_flag |=
                             LPFC_DELAY_MEM_FREE;
                         spin_unlock_irqrestore(
                             &phba->hbalock, iflag);
                     }
                 }
             }
             cmdiocbp->cmd_cmpl(phba, cmdiocbp, saveq);
         } else
             lpfc_sli_release_iocbq(phba, cmdiocbp);
     } else {
         /*
          * Unknown initiating command based on the response iotag.
          * This could be the case on the ELS ring because of
          * lpfc_els_abort().
          */
         if (pring->ringno != LPFC_ELS_RING) {
             /*
              * Ring <ringno> handler: unexpected completion IoTag
              * <IoTag>
              */
             lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
                      "0322 Ring %d handler: "
                      "unexpected completion IoTag x%x "
                      "Data: x%x x%x x%x x%x\n",
                      pring->ringno, iotag, ulp_status,
                      ulp_word4, ulp_command, ulp_context);
         }
     }
 
     return 1;
 }
 
 /**
  * lpfc_sli_rsp_pointers_error - Response ring pointer error handler
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  *
  * This function is called from the iocb ring event handlers when
  * put pointer is ahead of the get pointer for a ring. This function signal
  * an error attention condition to the worker thread and the worker
  * thread will transition the HBA to offline state.
  **/
 static void
 lpfc_sli_rsp_pointers_error(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 {
     struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
     /*
      * Ring <ringno> handler: portRspPut <portRspPut> is bigger than
      * rsp ring <portRspMax>
      */
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "0312 Ring %d handler: portRspPut %d "
             "is bigger than rsp ring %d\n",
             pring->ringno, le32_to_cpu(pgp->rspPutInx),
             pring->sli.sli3.numRiocb);
 
     phba->link_state = LPFC_HBA_ERROR;
 
     /*
      * All error attention handlers are posted to
      * worker thread
      */
     phba->work_ha |= HA_ERATT;
     phba->work_hs = HS_FFER3;
 
     lpfc_worker_wake_up(phba);
 
     return;
 }
 
 /**
  * lpfc_poll_eratt - Error attention polling timer timeout handler
  * @t: Context to fetch pointer to address of HBA context object from.
  *
  * This function is invoked by the Error Attention polling timer when the
  * timer times out. It will check the SLI Error Attention register for
  * possible attention events. If so, it will post an Error Attention event
  * and wake up worker thread to process it. Otherwise, it will set up the
  * Error Attention polling timer for the next poll.
  **/
 void lpfc_poll_eratt(struct timer_list *t)
 {
     struct lpfc_hba *phba;
     uint32_t eratt = 0;
     uint64_t sli_intr, cnt;
 
     phba = from_timer(phba, t, eratt_poll);
 
     /* Here we will also keep track of interrupts per sec of the hba */
     sli_intr = phba->sli.slistat.sli_intr;
 
     if (phba->sli.slistat.sli_prev_intr > sli_intr)
         cnt = (((uint64_t)(-1) - phba->sli.slistat.sli_prev_intr) +
             sli_intr);
     else
         cnt = (sli_intr - phba->sli.slistat.sli_prev_intr);
 
     /* 64-bit integer division not supported on 32-bit x86 - use do_div */
     do_div(cnt, phba->eratt_poll_interval);
     phba->sli.slistat.sli_ips = cnt;
 
     phba->sli.slistat.sli_prev_intr = sli_intr;
 
     /* Check chip HA register for error event */
     eratt = lpfc_sli_check_eratt(phba);
 
     if (eratt)
         /* Tell the worker thread there is work to do */
         lpfc_worker_wake_up(phba);
     else
         /* Restart the timer for next eratt poll */
         mod_timer(&phba->eratt_poll,
               jiffies +
               msecs_to_jiffies(1000 * phba->eratt_poll_interval));
     return;
 }
 
 
 /**
  * lpfc_sli_handle_fast_ring_event - Handle ring events on FCP ring
  * @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 interrupt context when there is a ring
  * event for the fcp ring. 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 up to the iocb with
  * LE bit set. The function will call the completion handler of the command iocb
  * if the response iocb indicates a completion for a command iocb or it is
  * an abort completion. The function will call lpfc_sli_process_unsol_iocb
  * function if this is an unsolicited iocb.
  * This routine presumes LPFC_FCP_RING handling and doesn't bother
  * to check it explicitly.
  */
 int
 lpfc_sli_handle_fast_ring_event(struct lpfc_hba *phba,
                 struct lpfc_sli_ring *pring, uint32_t mask)
 {
     struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
     IOCB_t *irsp = NULL;
     IOCB_t *entry = NULL;
     struct lpfc_iocbq *cmdiocbq = NULL;
     struct lpfc_iocbq rspiocbq;
     uint32_t status;
     uint32_t portRspPut, portRspMax;
     int rc = 1;
     lpfc_iocb_type type;
     unsigned long iflag;
     uint32_t rsp_cmpl = 0;
 
     spin_lock_irqsave(&phba->hbalock, iflag);
     pring->stats.iocb_event++;
 
     /*
      * The next available response entry should never exceed the maximum
      * entries.  If it does, treat it as an adapter hardware error.
      */
     portRspMax = pring->sli.sli3.numRiocb;
     portRspPut = le32_to_cpu(pgp->rspPutInx);
     if (unlikely(portRspPut >= portRspMax)) {
         lpfc_sli_rsp_pointers_error(phba, pring);
         spin_unlock_irqrestore(&phba->hbalock, iflag);
         return 1;
     }
     if (phba->fcp_ring_in_use) {
         spin_unlock_irqrestore(&phba->hbalock, iflag);
         return 1;
     } else
         phba->fcp_ring_in_use = 1;
 
     rmb();
     while (pring->sli.sli3.rspidx != portRspPut) {
         /*
          * Fetch an entry off the ring and copy it into a local data
          * structure.  The copy involves a byte-swap since the
          * network byte order and pci byte orders are different.
          */
         entry = lpfc_resp_iocb(phba, pring);
         phba->last_completion_time = jiffies;
 
         if (++pring->sli.sli3.rspidx >= portRspMax)
             pring->sli.sli3.rspidx = 0;
 
         lpfc_sli_pcimem_bcopy((uint32_t *) entry,
                       (uint32_t *) &rspiocbq.iocb,
                       phba->iocb_rsp_size);
         INIT_LIST_HEAD(&(rspiocbq.list));
         irsp = &rspiocbq.iocb;
 
         type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
         pring->stats.iocb_rsp++;
         rsp_cmpl++;
 
         if (unlikely(irsp->ulpStatus)) {
             /*
              * If resource errors reported from HBA, reduce
              * queuedepths of the SCSI device.
              */
             if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
                 ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) ==
                  IOERR_NO_RESOURCES)) {
                 spin_unlock_irqrestore(&phba->hbalock, iflag);
                 phba->lpfc_rampdown_queue_depth(phba);
                 spin_lock_irqsave(&phba->hbalock, iflag);
             }
 
             /* Rsp ring <ringno> error: IOCB */
             lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
                     "0336 Rsp Ring %d error: IOCB Data: "
                     "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->un1,
                     *((uint32_t *)&irsp->un1 + 1));
         }
 
         switch (type) {
         case LPFC_ABORT_IOCB:
         case LPFC_SOL_IOCB:
             /*
              * Idle exchange closed via ABTS from port.  No iocb
              * resources need to be recovered.
              */
             if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                         "0333 IOCB cmd 0x%x"
                         " processed. Skipping"
                         " completion\n",
                         irsp->ulpCommand);
                 break;
             }
 
             cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
                              &rspiocbq);
             if (unlikely(!cmdiocbq))
                 break;
             if (cmdiocbq->cmd_flag & LPFC_DRIVER_ABORTED)
                 cmdiocbq->cmd_flag &= ~LPFC_DRIVER_ABORTED;
             if (cmdiocbq->cmd_cmpl) {
                 spin_unlock_irqrestore(&phba->hbalock, iflag);
                 cmdiocbq->cmd_cmpl(phba, cmdiocbq, &rspiocbq);
                 spin_lock_irqsave(&phba->hbalock, iflag);
             }
             break;
         case LPFC_UNSOL_IOCB:
             spin_unlock_irqrestore(&phba->hbalock, iflag);
             lpfc_sli_process_unsol_iocb(phba, pring, &rspiocbq);
             spin_lock_irqsave(&phba->hbalock, iflag);
             break;
         default:
             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_TRACE_EVENT,
                         "0334 Unknown IOCB command "
                         "Data: x%x, x%x x%x x%x x%x\n",
                         type, irsp->ulpCommand,
                         irsp->ulpStatus,
                         irsp->ulpIoTag,
                         irsp->ulpContext);
             }
             break;
         }
 
         /*
          * The response IOCB has been processed.  Update the ring
          * pointer in SLIM.  If the port response put pointer has not
          * been updated, sync the pgp->rspPutInx and fetch the new port
          * response put pointer.
          */
         writel(pring->sli.sli3.rspidx,
             &phba->host_gp[pring->ringno].rspGetInx);
 
         if (pring->sli.sli3.rspidx == portRspPut)
             portRspPut = le32_to_cpu(pgp->rspPutInx);
     }
 
     if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
         pring->stats.iocb_rsp_full++;
         status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
         writel(status, phba->CAregaddr);
         readl(phba->CAregaddr);
     }
     if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
         pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
         pring->stats.iocb_cmd_empty++;
 
         /* Force update of the local copy of cmdGetInx */
         pring->sli.sli3.local_getidx = le32_to_cpu(pgp->cmdGetInx);
         lpfc_sli_resume_iocb(phba, pring);
 
         if ((pring->lpfc_sli_cmd_available))
             (pring->lpfc_sli_cmd_available) (phba, pring);
 
     }
 
     phba->fcp_ring_in_use = 0;
     spin_unlock_irqrestore(&phba->hbalock, iflag);
     return rc;
 }
 
 /**
  * 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 *cmdiocb;
     struct lpfc_iocbq *next_iocb;
     IOCB_t *irsp;
     uint32_t free_saveq;
     u8 cmd_type;
     lpfc_iocb_type type;
     unsigned long iflag;
     u32 ulp_status = get_job_ulpstatus(phba, rspiocbp);
     u32 ulp_word4 = get_job_word4(phba, rspiocbp);
     u32 ulp_command = get_job_cmnd(phba, rspiocbp);
     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++;
 
     /*
      * 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);
     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 (ulp_status == IOSTAT_LOCAL_REJECT &&
         ((ulp_word4 & IOERR_PARAM_MASK) ==
          IOERR_NO_RESOURCES)) {
         spin_unlock_irqrestore(&phba->hbalock, iflag);
         phba->lpfc_rampdown_queue_depth(phba);
         spin_lock_irqsave(&phba->hbalock, iflag);
     }
 
     if (ulp_status) {
         /* Rsp ring <ringno> error: IOCB */
         if (phba->sli_rev < LPFC_SLI_REV4) {
             irsp = &rspiocbp->iocb;
             lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
                     "0328 Rsp Ring %d error: ulp_status x%x "
                     "IOCB Data: "
                     "x%08x x%08x x%08x x%08x "
                     "x%08x x%08x x%08x x%08x "
                     "x%08x x%08x x%08x x%08x "
                     "x%08x x%08x x%08x x%08x\n",
                     pring->ringno, ulp_status,
                     get_job_ulpword(rspiocbp, 0),
                     get_job_ulpword(rspiocbp, 1),
                     get_job_ulpword(rspiocbp, 2),
                     get_job_ulpword(rspiocbp, 3),
                     get_job_ulpword(rspiocbp, 4),
                     get_job_ulpword(rspiocbp, 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));
         } else {
             lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
                     "0321 Rsp Ring %d error: "
                     "IOCB Data: "
                     "x%x x%x x%x x%x\n",
                     pring->ringno,
                     rspiocbp->wcqe_cmpl.word0,
                     rspiocbp->wcqe_cmpl.total_data_placed,
                     rspiocbp->wcqe_cmpl.parameter,
                     rspiocbp->wcqe_cmpl.word3);
         }
     }
 
 
     /*
      * 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.
      */
     cmd_type = ulp_command & CMD_IOCB_MASK;
     type = lpfc_sli_iocb_cmd_type(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:
         cmdiocb = NULL;
         if (ulp_command != CMD_XRI_ABORTED_CX)
             cmdiocb = lpfc_sli_iocbq_lookup(phba, pring,
                             saveq);
         if (cmdiocb) {
             /* Call the specified completion routine */
             if (cmdiocb->cmd_cmpl) {
                 spin_unlock_irqrestore(&phba->hbalock, iflag);
                 cmdiocb->cmd_cmpl(phba, cmdiocb, saveq);
                 spin_lock_irqsave(&phba->hbalock, iflag);
             } else {
                 __lpfc_sli_release_iocbq(phba, cmdiocb);
             }
         }
         break;
     case LPFC_UNKNOWN_IOCB:
         if (ulp_command == CMD_ADAPTER_MSG) {
             char adaptermsg[LPFC_MAX_ADPTMSG];
 
             memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
             memcpy(&adaptermsg[0], (uint8_t *)&rspiocbp->wqe,
                    MAX_MSG_DATA);
             dev_warn(&((phba->pcidev)->dev),
                  "lpfc%d: %s\n",
                  phba->brd_no, adaptermsg);
         } else {
             /* Unknown command */
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0335 Unknown IOCB "
                     "command Data: x%x "
                     "x%x x%x x%x\n",
                     ulp_command,
                     ulp_status,
                     get_wqe_reqtag(rspiocbp),
                     get_job_ulpcontext(phba, rspiocbp));
         }
         break;
     }
 
     if (free_saveq) {
         list_for_each_entry_safe(rspiocbp, next_iocb,
                      &saveq->list, list) {
             list_del_init(&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 routine wraps the actual slow_ring event process routine from the
  * API jump table function pointer from the lpfc_hba struct.
  **/
 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;
     uint32_t portRspPut, portRspMax;
     unsigned long iflag;
     uint32_t status;
 
     pgp = &phba->port_gp[pring->ringno];
     spin_lock_irqsave(&phba->hbalock, iflag);
     pring->stats.iocb_event++;
 
     /*
      * The next available response entry should never exceed the maximum
      * entries.  If it does, treat it as an adapter hardware error.
      */
     portRspMax = pring->sli.sli3.numRiocb;
     portRspPut = le32_to_cpu(pgp->rspPutInx);
     if (portRspPut >= portRspMax) {
         /*
          * Ring <ringno> handler: portRspPut <portRspPut> is bigger than
          * rsp ring <portRspMax>
          */
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0303 Ring %d handler: portRspPut %d "
                 "is bigger than rsp ring %d\n",
                 pring->ringno, portRspPut, portRspMax);
 
         phba->link_state = LPFC_HBA_ERROR;
         spin_unlock_irqrestore(&phba->hbalock, iflag);
 
         phba->work_hs = HS_FFER3;
         lpfc_handle_eratt(phba);
 
         return;
     }
 
     rmb();
     while (pring->sli.sli3.rspidx != portRspPut) {
         /*
          * Build a completion list and call the appropriate handler.
          * The process is to get the next available response iocb, get
          * a free iocb from the list, copy the response data into the
          * free iocb, insert to the continuation list, and update the
          * next response index to slim.  This process makes response
          * iocb's in the ring available to DMA as fast as possible but
          * pays a penalty for a copy operation.  Since the iocb is
          * only 32 bytes, this penalty is considered small relative to
          * the PCI reads for register values and a slim write.  When
          * the ulpLe field is set, the entire Command has been
          * received.
          */
         entry = lpfc_resp_iocb(phba, pring);
 
         phba->last_completion_time = jiffies;
         rspiocbp = __lpfc_sli_get_iocbq(phba);
         if (rspiocbp == NULL) {
             printk(KERN_ERR "%s: out of buffers! Failing "
                    "completion.\n", __func__);
             break;
         }
 
         lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb,
                       phba->iocb_rsp_size);
         irsp = &rspiocbp->iocb;
 
         if (++pring->sli.sli3.rspidx >= portRspMax)
             pring->sli.sli3.rspidx = 0;
 
         if (pring->ringno == LPFC_ELS_RING) {
             lpfc_debugfs_slow_ring_trc(phba,
             "IOCB rsp ring:   wd4:x%08x wd6:x%08x wd7:x%08x",
                 *(((uint32_t *) irsp) + 4),
                 *(((uint32_t *) irsp) + 6),
                 *(((uint32_t *) irsp) + 7));
         }
 
         writel(pring->sli.sli3.rspidx,
             &phba->host_gp[pring->ringno].rspGetInx);
 
         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
          * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
          * response put pointer.
          */
         if (pring->sli.sli3.rspidx == portRspPut) {
             portRspPut = le32_to_cpu(pgp->rspPutInx);
         }
     } /* while (pring->sli.sli3.rspidx != portRspPut) */
 
     if ((rspiocbp != NULL) && (mask & HA_R0RE_REQ)) {
         /* At least one response entry has been freed */
         pring->stats.iocb_rsp_full++;
         /* SET RxRE_RSP in Chip Att register */
         status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
         writel(status, phba->CAregaddr);
         readl(phba->CAregaddr); /* flush */
     }
     if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
         pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
         pring->stats.iocb_cmd_empty++;
 
         /* Force update of the local copy of cmdGetInx */
         pring->sli.sli3.local_getidx = le32_to_cpu(pgp->cmdGetInx);
         lpfc_sli_resume_iocb(phba, pring);
 
         if ((pring->lpfc_sli_cmd_available))
             (pring->lpfc_sli_cmd_available) (phba, pring);
 
     }
 
     spin_unlock_irqrestore(&phba->hbalock, iflag);
     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;
     struct hbq_dmabuf *dmabuf;
     struct lpfc_cq_event *cq_event;
     unsigned long iflag;
     int count = 0;
 
     spin_lock_irqsave(&phba->hbalock, iflag);
     phba->hba_flag &= ~HBA_SP_QUEUE_EVT;
     spin_unlock_irqrestore(&phba->hbalock, iflag);
     while (!list_empty(&phba->sli4_hba.sp_queue_event)) {
         /* Get the response iocb from the head of work queue */
         spin_lock_irqsave(&phba->hbalock, iflag);
         list_remove_head(&phba->sli4_hba.sp_queue_event,
                  cq_event, struct lpfc_cq_event, list);
         spin_unlock_irqrestore(&phba->hbalock, iflag);
 
         switch (bf_get(lpfc_wcqe_c_code, &cq_event->cqe.wcqe_cmpl)) {
         case CQE_CODE_COMPL_WQE:
             irspiocbq = container_of(cq_event, struct lpfc_iocbq,
                          cq_event);
             /* Translate ELS WCQE to response IOCBQ */
             irspiocbq = lpfc_sli4_els_preprocess_rspiocbq(phba,
                                       irspiocbq);
             if (irspiocbq)
                 lpfc_sli_sp_handle_rspiocb(phba, pring,
                                irspiocbq);
             count++;
             break;
         case CQE_CODE_RECEIVE:
         case CQE_CODE_RECEIVE_V1:
             dmabuf = container_of(cq_event, struct hbq_dmabuf,
                           cq_event);
             lpfc_sli4_handle_received_buffer(phba, dmabuf);
             count++;
             break;
         default:
             break;
         }
 
         /* Limit the number of events to 64 to avoid soft lockups */
         if (count == 64)
             break;
     }
 }
 
 /**
  * lpfc_sli_abort_iocb_ring - Abort all iocbs in the ring
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  *
  * This function aborts all iocbs in the given ring and frees all the iocb
  * objects in txq. This function issues an abort iocb for all the iocb commands
  * in txcmplq. The iocbs in the txcmplq is not guaranteed to complete before
  * the return of this function. The caller is not required to hold any locks.
  **/
 void
 lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 {
     LIST_HEAD(tx_completions);
     LIST_HEAD(txcmplq_completions);
     struct lpfc_iocbq *iocb, *next_iocb;
     int offline;
 
     if (pring->ringno == LPFC_ELS_RING) {
         lpfc_fabric_abort_hba(phba);
     }
     offline = pci_channel_offline(phba->pcidev);
 
     /* Error everything on txq and txcmplq
      * First do the txq.
      */
     if (phba->sli_rev >= LPFC_SLI_REV4) {
         spin_lock_irq(&pring->ring_lock);
         list_splice_init(&pring->txq, &tx_completions);
         pring->txq_cnt = 0;
 
         if (offline) {
             list_splice_init(&pring->txcmplq,
                      &txcmplq_completions);
         } else {
             /* Next issue ABTS for everything on the txcmplq */
             list_for_each_entry_safe(iocb, next_iocb,
                          &pring->txcmplq, list)
                 lpfc_sli_issue_abort_iotag(phba, pring,
                                iocb, NULL);
         }
         spin_unlock_irq(&pring->ring_lock);
     } else {
         spin_lock_irq(&phba->hbalock);
         list_splice_init(&pring->txq, &tx_completions);
         pring->txq_cnt = 0;
 
         if (offline) {
             list_splice_init(&pring->txcmplq, &txcmplq_completions);
         } else {
             /* Next issue ABTS for everything on the txcmplq */
             list_for_each_entry_safe(iocb, next_iocb,
                          &pring->txcmplq, list)
                 lpfc_sli_issue_abort_iotag(phba, pring,
                                iocb, NULL);
         }
         spin_unlock_irq(&phba->hbalock);
     }
 
     if (offline) {
         /* Cancel all the IOCBs from the completions list */
         lpfc_sli_cancel_iocbs(phba, &txcmplq_completions,
                       IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
     } else {
         /* Make sure HBA is alive */
         lpfc_issue_hb_tmo(phba);
     }
     /* Cancel all the IOCBs from the completions list */
     lpfc_sli_cancel_iocbs(phba, &tx_completions, IOSTAT_LOCAL_REJECT,
                   IOERR_SLI_ABORTED);
 }
 
 /**
  * lpfc_sli_abort_fcp_rings - Abort all iocbs in all FCP rings
  * @phba: Pointer to HBA context object.
  *
  * This function aborts all iocbs in FCP rings and frees all the iocb
  * objects in txq. This function issues an abort iocb for all the iocb commands
  * in txcmplq. The iocbs in the txcmplq is not guaranteed to complete before
  * the return of this function. The caller is not required to hold any locks.
  **/
 void
 lpfc_sli_abort_fcp_rings(struct lpfc_hba *phba)
 {
     struct lpfc_sli *psli = &phba->sli;
     struct lpfc_sli_ring  *pring;
     uint32_t i;
 
     /* Look on all the FCP Rings for the iotag */
     if (phba->sli_rev >= LPFC_SLI_REV4) {
         for (i = 0; i < phba->cfg_hdw_queue; i++) {
             pring = phba->sli4_hba.hdwq[i].io_wq->pring;
             lpfc_sli_abort_iocb_ring(phba, pring);
         }
     } else {
         pring = &psli->sli3_ring[LPFC_FCP_RING];
         lpfc_sli_abort_iocb_ring(phba, pring);
     }
 }
 
 /**
  * lpfc_sli_flush_io_rings - flush all iocbs in the IO ring
  * @phba: Pointer to HBA context object.
  *
  * This function flushes all iocbs in the IO ring and frees all the iocb
  * objects in txq and txcmplq. This function will not issue abort iocbs
  * for all the iocb commands in txcmplq, they will just be returned with
  * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI
  * slot has been permanently disabled.
  **/
 void
 lpfc_sli_flush_io_rings(struct lpfc_hba *phba)
 {
     LIST_HEAD(txq);
     LIST_HEAD(txcmplq);
     struct lpfc_sli *psli = &phba->sli;
     struct lpfc_sli_ring  *pring;
     uint32_t i;
     struct lpfc_iocbq *piocb, *next_iocb;
 
     spin_lock_irq(&phba->hbalock);
     /* Indicate the I/O queues are flushed */
     phba->hba_flag |= HBA_IOQ_FLUSH;
     spin_unlock_irq(&phba->hbalock);
 
     /* Look on all the FCP Rings for the iotag */
     if (phba->sli_rev >= LPFC_SLI_REV4) {
         for (i = 0; i < phba->cfg_hdw_queue; i++) {
             pring = phba->sli4_hba.hdwq[i].io_wq->pring;
 
             spin_lock_irq(&pring->ring_lock);
             /* Retrieve everything on txq */
             list_splice_init(&pring->txq, &txq);
             list_for_each_entry_safe(piocb, next_iocb,
                          &pring->txcmplq, list)
                 piocb->cmd_flag &= ~LPFC_IO_ON_TXCMPLQ;
             /* Retrieve everything on the txcmplq */
             list_splice_init(&pring->txcmplq, &txcmplq);
             pring->txq_cnt = 0;
             pring->txcmplq_cnt = 0;
             spin_unlock_irq(&pring->ring_lock);
 
             /* Flush the txq */
             lpfc_sli_cancel_iocbs(phba, &txq,
                           IOSTAT_LOCAL_REJECT,
                           IOERR_SLI_DOWN);
             /* Flush the txcmplq */
             lpfc_sli_cancel_iocbs(phba, &txcmplq,
                           IOSTAT_LOCAL_REJECT,
                           IOERR_SLI_DOWN);
             if (unlikely(pci_channel_offline(phba->pcidev)))
                 lpfc_sli4_io_xri_aborted(phba, NULL, 0);
         }
     } else {
         pring = &psli->sli3_ring[LPFC_FCP_RING];
 
         spin_lock_irq(&phba->hbalock);
         /* Retrieve everything on txq */
         list_splice_init(&pring->txq, &txq);
         list_for_each_entry_safe(piocb, next_iocb,
                      &pring->txcmplq, list)
             piocb->cmd_flag &= ~LPFC_IO_ON_TXCMPLQ;
         /* Retrieve everything on the txcmplq */
         list_splice_init(&pring->txcmplq, &txcmplq);
         pring->txq_cnt = 0;
         pring->txcmplq_cnt = 0;
         spin_unlock_irq(&phba->hbalock);
 
         /* Flush the txq */
         lpfc_sli_cancel_iocbs(phba, &txq, IOSTAT_LOCAL_REJECT,
                       IOERR_SLI_DOWN);
         /* Flush the txcmpq */
         lpfc_sli_cancel_iocbs(phba, &txcmplq, IOSTAT_LOCAL_REJECT,
                       IOERR_SLI_DOWN);
     }
 }
 
 /**
  * lpfc_sli_brdready_s3 - Check for sli3 host ready status
  * @phba: Pointer to HBA context object.
  * @mask: Bit mask to be checked.
  *
  * This function reads the host status register and compares
  * with the provided bit mask to check if HBA completed
  * the restart. This function will wait in a loop for the
  * HBA to complete restart. If the HBA does not restart within
  * 15 iterations, the function will reset the HBA again. The
  * function returns 1 when HBA fail to restart otherwise returns
  * zero.
  **/
 static int
 lpfc_sli_brdready_s3(struct lpfc_hba *phba, uint32_t mask)
 {
     uint32_t status;
     int i = 0;
     int retval = 0;
 
     /* Read the HBA Host Status Register */
     if (lpfc_readl(phba->HSregaddr, &status))
         return 1;
 
     phba->hba_flag |= HBA_NEEDS_CFG_PORT;
 
     /*
      * Check status register every 100ms for 5 retries, then every
      * 500ms for 5, then every 2.5 sec for 5, then reset board and
      * every 2.5 sec for 4.
      * Break our of the loop if errors occurred during init.
      */
     while (((status & mask) != mask) &&
            !(status & HS_FFERM) &&
            i++ < 20) {
 
         if (i <= 5)
             msleep(10);
         else if (i <= 10)
             msleep(500);
         else
             msleep(2500);
 
         if (i == 15) {
                 /* Do post */
             phba->pport->port_state = LPFC_VPORT_UNKNOWN;
             lpfc_sli_brdrestart(phba);
         }
         /* Read the HBA Host Status Register */
         if (lpfc_readl(phba->HSregaddr, &status)) {
             retval = 1;
             break;
         }
     }
 
     /* Check to see if any errors occurred during init */
     if ((status & HS_FFERM) || (i >= 20)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2751 Adapter failed to restart, "
                 "status reg x%x, FW Data: A8 x%x AC x%x\n",
                 status,
                 readl(phba->MBslimaddr + 0xa8),
                 readl(phba->MBslimaddr + 0xac));
         phba->link_state = LPFC_HBA_ERROR;
         retval = 1;
     }
 
     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;
 
     phba->hba_flag &= ~HBA_SETUP;
     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)
 
 /**
  * lpfc_reset_barrier - Make HBA ready for HBA reset
  * @phba: Pointer to HBA context object.
  *
  * This function is called before resetting an HBA. This function is called
  * with hbalock held and requests HBA to quiesce DMAs before a reset.
  **/
 void lpfc_reset_barrier(struct lpfc_hba *phba)
 {
     uint32_t __iomem *resp_buf;
     uint32_t __iomem *mbox_buf;
     volatile struct MAILBOX_word0 mbox;
     uint32_t hc_copy, ha_copy, resp_data;
     int  i;
     uint8_t hdrtype;
 
     lockdep_assert_held(&phba->hbalock);
 
     pci_read_config_byte(phba->pcidev, PCI_HEADER_TYPE, &hdrtype);
     if (hdrtype != 0x80 ||
         (FC_JEDEC_ID(phba->vpd.rev.biuRev) != HELIOS_JEDEC_ID &&
          FC_JEDEC_ID(phba->vpd.rev.biuRev) != THOR_JEDEC_ID))
         return;
 
     /*
      * Tell the other part of the chip to suspend temporarily all
      * its DMA activity.
      */
     resp_buf = phba->MBslimaddr;
 
     /* Disable the error attention */
     if (lpfc_readl(phba->HCregaddr, &hc_copy))
         return;
     writel((hc_copy & ~HC_ERINT_ENA), phba->HCregaddr);
     readl(phba->HCregaddr); /* flush */
     phba->link_flag |= LS_IGNORE_ERATT;
 
     if (lpfc_readl(phba->HAregaddr, &ha_copy))
         return;
     if (ha_copy & HA_ERATT) {
         /* Clear Chip error bit */
         writel(HA_ERATT, phba->HAregaddr);
         phba->pport->stopped = 1;
     }
 
     mbox.word0 = 0;
     mbox.mbxCommand = MBX_KILL_BOARD;
     mbox.mbxOwner = OWN_CHIP;
 
     writel(BARRIER_TEST_PATTERN, (resp_buf + 1));
     mbox_buf = phba->MBslimaddr;
     writel(mbox.word0, mbox_buf);
 
     for (i = 0; i < 50; i++) {
         if (lpfc_readl((resp_buf + 1), &resp_data))
             return;
         if (resp_data != ~(BARRIER_TEST_PATTERN))
             mdelay(1);
         else
             break;
     }
     resp_data = 0;
     if (lpfc_readl((resp_buf + 1), &resp_data))
         return;
     if (resp_data  != ~(BARRIER_TEST_PATTERN)) {
         if (phba->sli.sli_flag & LPFC_SLI_ACTIVE ||
             phba->pport->stopped)
             goto restore_hc;
         else
             goto clear_errat;
     }
 
     mbox.mbxOwner = OWN_HOST;
     resp_data = 0;
     for (i = 0; i < 500; i++) {
         if (lpfc_readl(resp_buf, &resp_data))
             return;
         if (resp_data != mbox.word0)
             mdelay(1);
         else
             break;
     }
 
 clear_errat:
 
     while (++i < 500) {
         if (lpfc_readl(phba->HAregaddr, &ha_copy))
             return;
         if (!(ha_copy & HA_ERATT))
             mdelay(1);
         else
             break;
     }
 
     if (readl(phba->HAregaddr) & HA_ERATT) {
         writel(HA_ERATT, phba->HAregaddr);
         phba->pport->stopped = 1;
     }
 
 restore_hc:
     phba->link_flag &= ~LS_IGNORE_ERATT;
     writel(hc_copy, phba->HCregaddr);
     readl(phba->HCregaddr); /* flush */
 }
 
 /**
  * lpfc_sli_brdkill - Issue a kill_board mailbox command
  * @phba: Pointer to HBA context object.
  *
  * This function issues a kill_board mailbox command and waits for
  * the error attention interrupt. This function is called for stopping
  * the firmware processing. The caller is not required to hold any
  * locks. This function calls lpfc_hba_down_post function to free
  * any pending commands after the kill. The function will return 1 when it
  * fails to kill the board else will return 0.
  **/
 int
 lpfc_sli_brdkill(struct lpfc_hba *phba)
 {
     struct lpfc_sli *psli;
     LPFC_MBOXQ_t *pmb;
     uint32_t status;
     uint32_t ha_copy;
     int retval;
     int i = 0;
 
     psli = &phba->sli;
 
     /* Kill HBA */
     lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
             "0329 Kill HBA Data: x%x x%x\n",
             phba->pport->port_state, psli->sli_flag);
 
     pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!pmb)
         return 1;
 
     /* Disable the error attention */
     spin_lock_irq(&phba->hbalock);
     if (lpfc_readl(phba->HCregaddr, &status)) {
         spin_unlock_irq(&phba->hbalock);
         mempool_free(pmb, phba->mbox_mem_pool);
         return 1;
     }
     status &= ~HC_ERINT_ENA;
     writel(status, phba->HCregaddr);
     readl(phba->HCregaddr); /* flush */
     phba->link_flag |= LS_IGNORE_ERATT;
     spin_unlock_irq(&phba->hbalock);
 
     lpfc_kill_board(phba, pmb);
     pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
     retval = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 
     if (retval != MBX_SUCCESS) {
         if (retval != MBX_BUSY)
             mempool_free(pmb, phba->mbox_mem_pool);
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2752 KILL_BOARD command failed retval %d\n",
                 retval);
         spin_lock_irq(&phba->hbalock);
         phba->link_flag &= ~LS_IGNORE_ERATT;
         spin_unlock_irq(&phba->hbalock);
         return 1;
     }
 
     spin_lock_irq(&phba->hbalock);
     psli->sli_flag &= ~LPFC_SLI_ACTIVE;
     spin_unlock_irq(&phba->hbalock);
 
     mempool_free(pmb, phba->mbox_mem_pool);
 
     /* There is no completion for a KILL_BOARD mbox cmd. Check for an error
      * attention every 100ms for 3 seconds. If we don't get ERATT after
      * 3 seconds we still set HBA_ERROR state because the status of the
      * board is now undefined.
      */
     if (lpfc_readl(phba->HAregaddr, &ha_copy))
         return 1;
     while ((i++ < 30) && !(ha_copy & HA_ERATT)) {
         mdelay(100);
         if (lpfc_readl(phba->HAregaddr, &ha_copy))
             return 1;
     }
 
     del_timer_sync(&psli->mbox_tmo);
     if (ha_copy & HA_ERATT) {
         writel(HA_ERATT, phba->HAregaddr);
         phba->pport->stopped = 1;
     }
     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);
 
     lpfc_hba_down_post(phba);
     phba->link_state = LPFC_HBA_ERROR;
 
     return ha_copy & HA_ERATT ? 0 : 1;
 }
 
 /**
  * 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
  * register. After the HBA resets, this function resets all the iocb ring
  * indices. This function disables PCI layer parity checking during
  * the reset.
  * This function returns 0 always.
  * The caller is not required to hold any locks.
  **/
 int
 lpfc_sli_brdreset(struct lpfc_hba *phba)
 {
     struct lpfc_sli *psli;
     struct lpfc_sli_ring *pring;
     uint16_t cfg_value;
     int i;
 
     psli = &phba->sli;
 
     /* Reset HBA */
     lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
             "0325 Reset HBA Data: x%x x%x\n",
             (phba->pport) ? phba->pport->port_state : 0,
             psli->sli_flag);
 
     /* perform board reset */
     phba->fc_eventTag = 0;
     phba->link_events = 0;
     phba->hba_flag |= HBA_NEEDS_CFG_PORT;
     if (phba->pport) {
         phba->pport->fc_myDID = 0;
         phba->pport->fc_prevDID = 0;
     }
 
     /* Turn off parity checking and serr during the physical reset */
     if (pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value))
         return -EIO;
 
     pci_write_config_word(phba->pcidev, PCI_COMMAND,
                   (cfg_value &
                    ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
 
     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);
     readl(phba->HCregaddr); /* flush */
     writel(0, phba->HCregaddr);
     readl(phba->HCregaddr); /* flush */
 
     /* Restore PCI cmd register */
     pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value);
 
     /* Initialize relevant SLI info */
     for (i = 0; i < psli->num_rings; i++) {
         pring = &psli->sli3_ring[i];
         pring->flag = 0;
         pring->sli.sli3.rspidx = 0;
         pring->sli.sli3.next_cmdidx  = 0;
         pring->sli.sli3.local_getidx = 0;
         pring->sli.sli3.cmdidx = 0;
         pring->missbufcnt = 0;
     }
 
     phba->link_state = LPFC_WARM_START;
     return 0;
 }
 
 /**
  * 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 on success else returns negative error code.
  **/
 int
 lpfc_sli4_brdreset(struct lpfc_hba *phba)
 {
     struct lpfc_sli *psli = &phba->sli;
     uint16_t cfg_value;
     int rc = 0;
 
     /* Reset HBA */
     lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
             "0295 Reset HBA Data: x%x x%x x%x\n",
             phba->pport->port_state, psli->sli_flag,
             phba->hba_flag);
 
     /* perform board reset */
     phba->fc_eventTag = 0;
     phba->link_events = 0;
     phba->pport->fc_myDID = 0;
     phba->pport->fc_prevDID = 0;
     phba->hba_flag &= ~HBA_SETUP;
 
     spin_lock_irq(&phba->hbalock);
     psli->sli_flag &= ~(LPFC_PROCESS_LA);
     phba->fcf.fcf_flag = 0;
     spin_unlock_irq(&phba->hbalock);
 
     /* Now physically reset the device */
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "0389 Performing PCI function reset!\n");
 
     /* Turn off parity checking and serr during the physical reset */
     if (pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value)) {
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "3205 PCI read Config failed\n");
         return -EIO;
     }
 
     pci_write_config_word(phba->pcidev, PCI_COMMAND, (cfg_value &
                   ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
 
     /* Perform FCoE PCI function reset before freeing queue memory */
     rc = lpfc_pci_function_reset(phba);
 
     /* Restore PCI cmd register */
     pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value);
 
     return rc;
 }
 
 /**
  * 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
  * restart the HBA. The caller is not required to hold any lock.
  * This function writes MBX_RESTART mailbox command to the SLIM and
  * resets the HBA. At the end of the function, it calls lpfc_hba_down_post
  * function to free any pending commands. The function enables
  * POST only during the first initialization. The function returns zero.
  * The function does not guarantee completion of MBX_RESTART mailbox
  * command before the return of this function.
  **/
 static int
 lpfc_sli_brdrestart_s3(struct lpfc_hba *phba)
 {
     volatile struct MAILBOX_word0 mb;
     struct lpfc_sli *psli;
     void __iomem *to_slim;
     uint32_t hba_aer_enabled;
 
     spin_lock_irq(&phba->hbalock);
 
     /* Take PCIe device Advanced Error Reporting (AER) state */
     hba_aer_enabled = phba->hba_flag & HBA_AER_ENABLED;
 
     psli = &phba->sli;
 
     /* Restart HBA */
     lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
             "0337 Restart HBA Data: x%x x%x\n",
             (phba->pport) ? phba->pport->port_state : 0,
             psli->sli_flag);
 
     mb.word0 = 0;
     mb.mbxCommand = MBX_RESTART;
     mb.mbxHc = 1;
 
     lpfc_reset_barrier(phba);
 
     to_slim = phba->MBslimaddr;
     writel(mb.word0, to_slim);
     readl(to_slim); /* flush */
 
     /* Only skip post after fc_ffinit is completed */
     if (phba->pport && phba->pport->port_state)
         mb.word0 = 1;   /* This is really setting up word1 */
     else
         mb.word0 = 0;   /* This is really setting up word1 */
     to_slim = phba->MBslimaddr + sizeof (uint32_t);
     writel(mb.word0, to_slim);
     readl(to_slim); /* flush */
 
     lpfc_sli_brdreset(phba);
     if (phba->pport)
         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 = ktime_get_seconds();
 
     /* Give the INITFF and Post time to settle. */
     mdelay(100);
 
     /* Reset HBA AER if it was enabled, note hba_flag was reset above */
     if (hba_aer_enabled)
         pci_disable_pcie_error_reporting(phba->pcidev);
 
     lpfc_hba_down_post(phba);
 
     return 0;
 }
 
 /**
  * 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;
     uint32_t hba_aer_enabled;
     int rc;
 
     /* 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);
 
     /* Take PCIe device Advanced Error Reporting (AER) state */
     hba_aer_enabled = phba->hba_flag & HBA_AER_ENABLED;
 
     rc = lpfc_sli4_brdreset(phba);
     if (rc) {
         phba->link_state = LPFC_HBA_ERROR;
         goto hba_down_queue;
     }
 
     spin_lock_irq(&phba->hbalock);
     phba->pport->stopped = 0;
     phba->link_state = LPFC_INIT_START;
     phba->hba_flag = 0;
     /* Preserve FA-PWWN expectation */
     phba->sli4_hba.fawwpn_flag &= LPFC_FAWWPN_FABRIC;
     spin_unlock_irq(&phba->hbalock);
 
     memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
     psli->stats_start = ktime_get_seconds();
 
     /* Reset HBA AER if it was enabled, note hba_flag was reset above */
     if (hba_aer_enabled)
         pci_disable_pcie_error_reporting(phba->pcidev);
 
 hba_down_queue:
     lpfc_hba_down_post(phba);
     lpfc_sli4_queue_destroy(phba);
 
     return rc;
 }
 
 /**
  * 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.
  *
  * This function is called after a HBA restart to wait for successful
  * restart of the HBA. Successful restart of the HBA is indicated by
  * HS_FFRDY and HS_MBRDY bits. If the HBA fails to restart even after 15
  * iteration, the function will restart the HBA again. The function returns
  * zero if HBA successfully restarted else returns negative error code.
  **/
 int
 lpfc_sli_chipset_init(struct lpfc_hba *phba)
 {
     uint32_t status, i = 0;
 
     /* Read the HBA Host Status Register */
     if (lpfc_readl(phba->HSregaddr, &status))
         return -EIO;
 
     /* Check status register to see what current state is */
     i = 0;
     while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
 
         /* Check every 10ms for 10 retries, then every 100ms for 90
          * retries, then every 1 sec for 50 retires for a total of
          * ~60 seconds before reset the board again and check every
          * 1 sec for 50 retries. The up to 60 seconds before the
          * board ready is required by the Falcon FIPS zeroization
          * complete, and any reset the board in between shall cause
          * restart of zeroization, further delay the board ready.
          */
         if (i++ >= 200) {
             /* Adapter failed to init, timeout, status reg
                <status> */
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0436 Adapter failed to init, "
                     "timeout, status reg x%x, "
                     "FW Data: A8 x%x AC x%x\n", status,
                     readl(phba->MBslimaddr + 0xa8),
                     readl(phba->MBslimaddr + 0xac));
             phba->link_state = LPFC_HBA_ERROR;
             return -ETIMEDOUT;
         }
 
         /* Check to see if any errors occurred during init */
         if (status & HS_FFERM) {
             /* ERROR: During chipset initialization */
             /* Adapter failed to init, chipset, status reg
                <status> */
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0437 Adapter failed to init, "
                     "chipset, status reg x%x, "
                     "FW Data: A8 x%x AC x%x\n", status,
                     readl(phba->MBslimaddr + 0xa8),
                     readl(phba->MBslimaddr + 0xac));
             phba->link_state = LPFC_HBA_ERROR;
             return -EIO;
         }
 
         if (i <= 10)
             msleep(10);
         else if (i <= 100)
             msleep(100);
         else
             msleep(1000);
 
         if (i == 150) {
             /* Do post */
             phba->pport->port_state = LPFC_VPORT_UNKNOWN;
             lpfc_sli_brdrestart(phba);
         }
         /* Read the HBA Host Status Register */
         if (lpfc_readl(phba->HSregaddr, &status))
             return -EIO;
     }
 
     /* Check to see if any errors occurred during init */
     if (status & HS_FFERM) {
         /* ERROR: During chipset initialization */
         /* Adapter failed to init, chipset, status reg <status> */
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0438 Adapter failed to init, chipset, "
                 "status reg x%x, "
                 "FW Data: A8 x%x AC x%x\n", status,
                 readl(phba->MBslimaddr + 0xa8),
                 readl(phba->MBslimaddr + 0xac));
         phba->link_state = LPFC_HBA_ERROR;
         return -EIO;
     }
 
     phba->hba_flag |= HBA_NEEDS_CFG_PORT;
 
     /* Clear all interrupt enable conditions */
     writel(0, phba->HCregaddr);
     readl(phba->HCregaddr); /* flush */
 
     /* setup host attn register */
     writel(0xffffffff, phba->HAregaddr);
     readl(phba->HAregaddr); /* flush */
     return 0;
 }
 
 /**
  * lpfc_sli_hbq_count - Get the number of HBQs to be configured
  *
  * This function calculates and returns the number of HBQs required to be
  * configured.
  **/
 int
 lpfc_sli_hbq_count(void)
 {
     return ARRAY_SIZE(lpfc_hbq_defs);
 }
 
 /**
  * lpfc_sli_hbq_entry_count - Calculate total number of hbq entries
  *
  * This function adds the number of hbq entries in every HBQ to get
  * the total number of hbq entries required for the HBA and returns
  * the total count.
  **/
 static int
 lpfc_sli_hbq_entry_count(void)
 {
     int  hbq_count = lpfc_sli_hbq_count();
     int  count = 0;
     int  i;
 
     for (i = 0; i < hbq_count; ++i)
         count += lpfc_hbq_defs[i]->entry_count;
     return count;
 }
 
 /**
  * lpfc_sli_hbq_size - Calculate memory required for all hbq entries
  *
  * This function calculates amount of memory required for all hbq entries
  * to be configured and returns the total memory required.
  **/
 int
 lpfc_sli_hbq_size(void)
 {
     return lpfc_sli_hbq_entry_count() * sizeof(struct lpfc_hbq_entry);
 }
 
 /**
  * lpfc_sli_hbq_setup - configure and initialize HBQs
  * @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_sli_hbq_setup(struct lpfc_hba *phba)
 {
     int  hbq_count = lpfc_sli_hbq_count();
     LPFC_MBOXQ_t *pmb;
     MAILBOX_t *pmbox;
     uint32_t hbqno;
     uint32_t hbq_entry_index;
 
                 /* Get a Mailbox buffer to setup mailbox
                  * commands for HBA initialization
                  */
     pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 
     if (!pmb)
         return -ENOMEM;
 
     pmbox = &pmb->u.mb;
 
     /* Initialize the struct lpfc_sli_hbq structure for each hbq */
     phba->link_state = LPFC_INIT_MBX_CMDS;
     phba->hbq_in_use = 1;
 
     hbq_entry_index = 0;
     for (hbqno = 0; hbqno < hbq_count; ++hbqno) {
         phba->hbqs[hbqno].next_hbqPutIdx = 0;
         phba->hbqs[hbqno].hbqPutIdx      = 0;
         phba->hbqs[hbqno].local_hbqGetIdx   = 0;
         phba->hbqs[hbqno].entry_count =
             lpfc_hbq_defs[hbqno]->entry_count;
         lpfc_config_hbq(phba, hbqno, lpfc_hbq_defs[hbqno],
             hbq_entry_index, pmb);
         hbq_entry_index += phba->hbqs[hbqno].entry_count;
 
         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
             /* Adapter failed to init, mbxCmd <cmd> CFG_RING,
                mbxStatus <status>, ring <num> */
 
             lpfc_printf_log(phba, KERN_ERR,
                     LOG_SLI | LOG_VPORT,
                     "1805 Adapter failed to init. "
                     "Data: x%x x%x x%x\n",
                     pmbox->mbxCommand,
                     pmbox->mbxStatus, hbqno);
 
             phba->link_state = LPFC_HBA_ERROR;
             mempool_free(pmb, phba->mbox_mem_pool);
             return -ENXIO;
         }
     }
     phba->hbq_count = hbq_count;
 
     mempool_free(pmb, phba->mbox_mem_pool);
 
     /* Initially populate or replenish the HBQs */
     for (hbqno = 0; hbqno < hbq_count; ++hbqno)
         lpfc_sli_hbqbuf_init_hbqs(phba, hbqno);
     return 0;
 }
 
 /**
  * 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;
     /**
      * Specific case when the MDS diagnostics is enabled and supported.
      * The receive buffer count is truncated to manage the incoming
      * traffic.
      **/
     if (phba->cfg_enable_mds_diags && phba->mds_diags_support)
         phba->hbqs[LPFC_ELS_HBQ].entry_count =
             lpfc_hbq_defs[LPFC_ELS_HBQ]->entry_count >> 1;
     else
         phba->hbqs[LPFC_ELS_HBQ].entry_count =
             lpfc_hbq_defs[LPFC_ELS_HBQ]->entry_count;
     phba->hbq_count = 1;
     lpfc_sli_hbqbuf_init_hbqs(phba, LPFC_ELS_HBQ);
     /* Initially populate or replenish the HBQs */
     return 0;
 }
 
 /**
  * lpfc_sli_config_port - Issue config port mailbox command
  * @phba: Pointer to HBA context object.
  * @sli_mode: sli mode - 2/3
  *
  * This function is called by the sli initialization code path
  * to issue config_port mailbox command. This function restarts the
  * HBA firmware and issues a config_port mailbox command to configure
  * the SLI interface in the sli mode specified by sli_mode
  * variable. The caller is not required to hold any locks.
  * The function returns 0 if successful, else returns negative error
  * code.
  **/
 int
 lpfc_sli_config_port(struct lpfc_hba *phba, int sli_mode)
 {
     LPFC_MBOXQ_t *pmb;
     uint32_t resetcount = 0, rc = 0, done = 0;
 
     pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!pmb) {
         phba->link_state = LPFC_HBA_ERROR;
         return -ENOMEM;
     }
 
     phba->sli_rev = sli_mode;
     while (resetcount < 2 && !done) {
         spin_lock_irq(&phba->hbalock);
         phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
         spin_unlock_irq(&phba->hbalock);
         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
         lpfc_sli_brdrestart(phba);
         rc = lpfc_sli_chipset_init(phba);
         if (rc)
             break;
 
         spin_lock_irq(&phba->hbalock);
         phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
         spin_unlock_irq(&phba->hbalock);
         resetcount++;
 
         /* Call pre CONFIG_PORT mailbox command initialization.  A
          * value of 0 means the call was successful.  Any other
          * nonzero value is a failure, but if ERESTART is returned,
          * the driver may reset the HBA and try again.
          */
         rc = lpfc_config_port_prep(phba);
         if (rc == -ERESTART) {
             phba->link_state = LPFC_LINK_UNKNOWN;
             continue;
         } else if (rc)
             break;
 
         phba->link_state = LPFC_INIT_MBX_CMDS;
         lpfc_config_port(phba, pmb);
         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
         phba->sli3_options &= ~(LPFC_SLI3_NPIV_ENABLED |
                     LPFC_SLI3_HBQ_ENABLED |
                     LPFC_SLI3_CRP_ENABLED |
                     LPFC_SLI3_DSS_ENABLED);
         if (rc != MBX_SUCCESS) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0442 Adapter failed to init, mbxCmd x%x "
                 "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
                 pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus, 0);
             spin_lock_irq(&phba->hbalock);
             phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE;
             spin_unlock_irq(&phba->hbalock);
             rc = -ENXIO;
         } 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 ((pmb->u.mb.un.varCfgPort.casabt == 1) &&
                 (pmb->u.mb.un.varCfgPort.gasabt == 0))
                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                     "3110 Port did not grant ASABT\n");
         }
     }
     if (!done) {
         rc = -EINVAL;
         goto do_prep_failed;
     }
     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->u.mb.un.varCfgPort.gmv) {
             phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
             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->u.mb.un.varCfgPort.gerbm)
             phba->sli3_options |= LPFC_SLI3_HBQ_ENABLED;
         if (pmb->u.mb.un.varCfgPort.gcrp)
             phba->sli3_options |= LPFC_SLI3_CRP_ENABLED;
 
         phba->hbq_get = phba->mbox->us.s3_pgp.hbq_get;
         phba->port_gp = phba->mbox->us.s3_pgp.port;
 
         if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) {
             if (pmb->u.mb.un.varCfgPort.gbg == 0) {
                 phba->cfg_enable_bg = 0;
                 phba->sli3_options &= ~LPFC_SLI3_BG_ENABLED;
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "0443 Adapter did not grant "
                         "BlockGuard\n");
             }
         }
     } else {
         phba->hbq_get = NULL;
         phba->port_gp = phba->mbox->us.s2.port;
         phba->max_vpi = 0;
     }
 do_prep_failed:
     mempool_free(pmb, phba->mbox_mem_pool);
     return rc;
 }
 
 
 /**
  * lpfc_sli_hba_setup - SLI initialization function
  * @phba: Pointer to HBA context object.
  *
  * This function is the main SLI initialization function. This function
  * is called by the HBA initialization code, HBA reset code and HBA
  * error attention handler code. Caller is not required to hold any
  * locks. This function issues config_port mailbox command to configure
  * the SLI, setup iocb rings and HBQ rings. In the end the function
  * calls the config_port_post function to issue init_link mailbox
  * command and to start the discovery. The function will return zero
  * if successful, else it will return negative error code.
  **/
 int
 lpfc_sli_hba_setup(struct lpfc_hba *phba)
 {
     uint32_t rc;
     int  i;
     int longs;
 
     /* Enable ISR already does config_port because of config_msi mbx */
     if (phba->hba_flag & HBA_NEEDS_CFG_PORT) {
         rc = lpfc_sli_config_port(phba, LPFC_SLI_REV3);
         if (rc)
             return -EIO;
         phba->hba_flag &= ~HBA_NEEDS_CFG_PORT;
     }
     phba->fcp_embed_io = 0; /* SLI4 FC support only */
 
     /* Enable PCIe device Advanced Error Reporting (AER) if configured */
     if (phba->cfg_aer_support == 1 && !(phba->hba_flag & HBA_AER_ENABLED)) {
         rc = pci_enable_pcie_error_reporting(phba->pcidev);
         if (!rc) {
             lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                     "2709 This device supports "
                     "Advanced Error Reporting (AER)\n");
             spin_lock_irq(&phba->hbalock);
             phba->hba_flag |= HBA_AER_ENABLED;
             spin_unlock_irq(&phba->hbalock);
         } else {
             lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                     "2708 This device does not support "
                     "Advanced Error Reporting (AER): %d\n",
                     rc);
             phba->cfg_aer_support = 0;
         }
     }
 
     if (phba->sli_rev == 3) {
         phba->iocb_cmd_size = SLI3_IOCB_CMD_SIZE;
         phba->iocb_rsp_size = SLI3_IOCB_RSP_SIZE;
     } else {
         phba->iocb_cmd_size = SLI2_IOCB_CMD_SIZE;
         phba->iocb_rsp_size = SLI2_IOCB_RSP_SIZE;
         phba->sli3_options = 0;
     }
 
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "0444 Firmware in SLI %x mode. Max_vpi %d\n",
             phba->sli_rev, phba->max_vpi);
     rc = lpfc_sli_ring_map(phba);
 
     if (rc)
         goto lpfc_sli_hba_setup_error;
 
     /* Initialize VPIs. */
     if (phba->sli_rev == LPFC_SLI_REV3) {
         /*
          * The VPI bitmask and physical ID array are allocated
          * and initialized once only - at driver load.  A port
          * reset doesn't need to reinitialize this memory.
          */
         if ((phba->vpi_bmask == NULL) && (phba->vpi_ids == NULL)) {
             longs = (phba->max_vpi + BITS_PER_LONG) / BITS_PER_LONG;
             phba->vpi_bmask = kcalloc(longs,
                           sizeof(unsigned long),
                           GFP_KERNEL);
             if (!phba->vpi_bmask) {
                 rc = -ENOMEM;
                 goto lpfc_sli_hba_setup_error;
             }
 
             phba->vpi_ids = kcalloc(phba->max_vpi + 1,
                         sizeof(uint16_t),
                         GFP_KERNEL);
             if (!phba->vpi_ids) {
                 kfree(phba->vpi_bmask);
                 rc = -ENOMEM;
                 goto lpfc_sli_hba_setup_error;
             }
             for (i = 0; i < phba->max_vpi; i++)
                 phba->vpi_ids[i] = i;
         }
     }
 
     /* Init HBQs */
     if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
         rc = lpfc_sli_hbq_setup(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)
         goto lpfc_sli_hba_setup_error;
 
     return rc;
 
 lpfc_sli_hba_setup_error:
     phba->link_state = LPFC_HBA_ERROR;
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "0445 Firmware initialization failed\n");
     return rc;
 }
 
 /**
  * lpfc_sli4_read_fcoe_params - Read fcoe params from conf region
  * @phba: Pointer to HBA context object.
  *
  * 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;
 
     mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq)
         return -ENOMEM;
 
     mqe = &mboxq->u.mqe;
     if (lpfc_sli4_dump_cfg_rg23(phba, mboxq)) {
         rc = -ENOMEM;
         goto out_free_mboxq;
     }
 
     mp = (struct lpfc_dmabuf *)mboxq->ctx_buf;
     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) {
         rc = -EIO;
         goto out_free_mboxq;
     }
     data_length = mqe->un.mb_words[5];
     if (data_length > DMP_RGN23_SIZE) {
         rc = -EIO;
         goto out_free_mboxq;
     }
 
     lpfc_parse_fcoe_conf(phba, mp->virt, data_length);
     rc = 0;
 
 out_free_mboxq:
     lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
     return rc;
 }
 
 /**
  * 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 - successful
  *  -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;
     }
 
     /*
      * 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);
         kfree(dmabuf);
         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;
 
     memcpy(vpd, dmabuf->virt, *vpd_size);
 
     dma_free_coherent(&phba->pcidev->dev, dma_size,
               dmabuf->virt, dmabuf->phys);
     kfree(dmabuf);
     return 0;
 }
 
 /**
  * lpfc_sli4_get_ctl_attr - Retrieve SLI4 device controller attributes
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine retrieves SLI4 device physical port name this PCI function
  * is attached to.
  *
  * Return codes
  *      0 - successful
  *      otherwise - failed to retrieve controller attributes
  **/
 static int
 lpfc_sli4_get_ctl_attr(struct lpfc_hba *phba)
 {
     LPFC_MBOXQ_t *mboxq;
     struct lpfc_mbx_get_cntl_attributes *mbx_cntl_attr;
     struct lpfc_controller_attribute *cntl_attr;
     void *virtaddr = NULL;
     uint32_t alloclen, reqlen;
     uint32_t shdr_status, shdr_add_status;
     union lpfc_sli4_cfg_shdr *shdr;
     int rc;
 
     mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq)
         return -ENOMEM;
 
     /* Send COMMON_GET_CNTL_ATTRIBUTES mbox cmd */
     reqlen = sizeof(struct lpfc_mbx_get_cntl_attributes);
     alloclen = lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
             LPFC_MBOX_OPCODE_GET_CNTL_ATTRIBUTES, reqlen,
             LPFC_SLI4_MBX_NEMBED);
 
     if (alloclen < reqlen) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3084 Allocated DMA memory size (%d) is "
                 "less than the requested DMA memory size "
                 "(%d)\n", alloclen, reqlen);
         rc = -ENOMEM;
         goto out_free_mboxq;
     }
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
     virtaddr = mboxq->sge_array->addr[0];
     mbx_cntl_attr = (struct lpfc_mbx_get_cntl_attributes *)virtaddr;
     shdr = &mbx_cntl_attr->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_WARNING, LOG_SLI,
                 "3085 Mailbox x%x (x%x/x%x) failed, "
                 "rc:x%x, status:x%x, add_status:x%x\n",
                 bf_get(lpfc_mqe_command, &mboxq->u.mqe),
                 lpfc_sli_config_mbox_subsys_get(phba, mboxq),
                 lpfc_sli_config_mbox_opcode_get(phba, mboxq),
                 rc, shdr_status, shdr_add_status);
         rc = -ENXIO;
         goto out_free_mboxq;
     }
 
     cntl_attr = &mbx_cntl_attr->cntl_attr;
     phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_VAL;
     phba->sli4_hba.lnk_info.lnk_tp =
         bf_get(lpfc_cntl_attr_lnk_type, cntl_attr);
     phba->sli4_hba.lnk_info.lnk_no =
         bf_get(lpfc_cntl_attr_lnk_numb, cntl_attr);
     phba->sli4_hba.flash_id = bf_get(lpfc_cntl_attr_flash_id, cntl_attr);
     phba->sli4_hba.asic_rev = bf_get(lpfc_cntl_attr_asic_rev, cntl_attr);
 
     memset(phba->BIOSVersion, 0, sizeof(phba->BIOSVersion));
     strlcat(phba->BIOSVersion, (char *)cntl_attr->bios_ver_str,
         sizeof(phba->BIOSVersion));
 
     lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
             "3086 lnk_type:%d, lnk_numb:%d, bios_ver:%s, "
             "flash_id: x%02x, asic_rev: x%02x\n",
             phba->sli4_hba.lnk_info.lnk_tp,
             phba->sli4_hba.lnk_info.lnk_no,
             phba->BIOSVersion, phba->sli4_hba.flash_id,
             phba->sli4_hba.asic_rev);
 out_free_mboxq:
     if (bf_get(lpfc_mqe_command, &mboxq->u.mqe) == MBX_SLI4_CONFIG)
         lpfc_sli4_mbox_cmd_free(phba, mboxq);
     else
         mempool_free(mboxq, phba->mbox_mem_pool);
     return rc;
 }
 
 /**
  * lpfc_sli4_retrieve_pport_name - Retrieve SLI4 device physical port name
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine retrieves SLI4 device physical port name this PCI function
  * is attached to.
  *
  * Return codes
  *      0 - successful
  *      otherwise - failed to retrieve physical port name
  **/
 static int
 lpfc_sli4_retrieve_pport_name(struct lpfc_hba *phba)
 {
     LPFC_MBOXQ_t *mboxq;
     struct lpfc_mbx_get_port_name *get_port_name;
     uint32_t shdr_status, shdr_add_status;
     union lpfc_sli4_cfg_shdr *shdr;
     char cport_name = 0;
     int rc;
 
     /* We assume nothing at this point */
     phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_INVAL;
     phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_NON;
 
     mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq)
         return -ENOMEM;
     /* obtain link type and link number via READ_CONFIG */
     phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_INVAL;
     lpfc_sli4_read_config(phba);
 
     if (phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG)
         phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC;
 
     if (phba->sli4_hba.lnk_info.lnk_dv == LPFC_LNK_DAT_VAL)
         goto retrieve_ppname;
 
     /* obtain link type and link number via COMMON_GET_CNTL_ATTRIBUTES */
     rc = lpfc_sli4_get_ctl_attr(phba);
     if (rc)
         goto out_free_mboxq;
 
 retrieve_ppname:
     lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
         LPFC_MBOX_OPCODE_GET_PORT_NAME,
         sizeof(struct lpfc_mbx_get_port_name) -
         sizeof(struct lpfc_sli4_cfg_mhdr),
         LPFC_SLI4_MBX_EMBED);
     get_port_name = &mboxq->u.mqe.un.get_port_name;
     shdr = (union lpfc_sli4_cfg_shdr *)&get_port_name->header.cfg_shdr;
     bf_set(lpfc_mbox_hdr_version, &shdr->request, LPFC_OPCODE_VERSION_1);
     bf_set(lpfc_mbx_get_port_name_lnk_type, &get_port_name->u.request,
         phba->sli4_hba.lnk_info.lnk_tp);
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
     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_WARNING, LOG_SLI,
                 "3087 Mailbox x%x (x%x/x%x) failed: "
                 "rc:x%x, status:x%x, add_status:x%x\n",
                 bf_get(lpfc_mqe_command, &mboxq->u.mqe),
                 lpfc_sli_config_mbox_subsys_get(phba, mboxq),
                 lpfc_sli_config_mbox_opcode_get(phba, mboxq),
                 rc, shdr_status, shdr_add_status);
         rc = -ENXIO;
         goto out_free_mboxq;
     }
     switch (phba->sli4_hba.lnk_info.lnk_no) {
     case LPFC_LINK_NUMBER_0:
         cport_name = bf_get(lpfc_mbx_get_port_name_name0,
                 &get_port_name->u.response);
         phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_GET;
         break;
     case LPFC_LINK_NUMBER_1:
         cport_name = bf_get(lpfc_mbx_get_port_name_name1,
                 &get_port_name->u.response);
         phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_GET;
         break;
     case LPFC_LINK_NUMBER_2:
         cport_name = bf_get(lpfc_mbx_get_port_name_name2,
                 &get_port_name->u.response);
         phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_GET;
         break;
     case LPFC_LINK_NUMBER_3:
         cport_name = bf_get(lpfc_mbx_get_port_name_name3,
                 &get_port_name->u.response);
         phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_GET;
         break;
     default:
         break;
     }
 
     if (phba->sli4_hba.pport_name_sta == LPFC_SLI4_PPNAME_GET) {
         phba->Port[0] = cport_name;
         phba->Port[1] = '\0';
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "3091 SLI get port name: %s\n", phba->Port);
     }
 
 out_free_mboxq:
     if (bf_get(lpfc_mqe_command, &mboxq->u.mqe) == MBX_SLI4_CONFIG)
         lpfc_sli4_mbox_cmd_free(phba, mboxq);
     else
         mempool_free(mboxq, phba->mbox_mem_pool);
     return rc;
 }
 
 /**
  * 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)
 {
     int qidx;
     struct lpfc_sli4_hba *sli4_hba = &phba->sli4_hba;
     struct lpfc_sli4_hdw_queue *qp;
     struct lpfc_queue *eq;
 
     sli4_hba->sli4_write_cq_db(phba, sli4_hba->mbx_cq, 0, LPFC_QUEUE_REARM);
     sli4_hba->sli4_write_cq_db(phba, sli4_hba->els_cq, 0, LPFC_QUEUE_REARM);
     if (sli4_hba->nvmels_cq)
         sli4_hba->sli4_write_cq_db(phba, sli4_hba->nvmels_cq, 0,
                        LPFC_QUEUE_REARM);
 
     if (sli4_hba->hdwq) {
         /* Loop thru all Hardware Queues */
         for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
             qp = &sli4_hba->hdwq[qidx];
             /* ARM the corresponding CQ */
             sli4_hba->sli4_write_cq_db(phba, qp->io_cq, 0,
                         LPFC_QUEUE_REARM);
         }
 
         /* Loop thru all IRQ vectors */
         for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
             eq = sli4_hba->hba_eq_hdl[qidx].eq;
             /* ARM the corresponding EQ */
             sli4_hba->sli4_write_eq_db(phba, eq,
                            0, LPFC_QUEUE_REARM);
         }
     }
 
     if (phba->nvmet_support) {
         for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++) {
             sli4_hba->sli4_write_cq_db(phba,
                 sli4_hba->nvmet_cqset[qidx], 0,
                 LPFC_QUEUE_REARM);
         }
     }
 }
 
 /**
  * lpfc_sli4_get_avail_extnt_rsrc - Get available resource extent count.
  * @phba: Pointer to HBA context object.
  * @type: The resource extent type.
  * @extnt_count: buffer to hold port available extent count.
  * @extnt_size: buffer to hold element count per extent.
  *
  * This function calls the port and retrievs the number of available
  * extents and their size for a particular extent type.
  *
  * Returns: 0 if successful.  Nonzero otherwise.
  **/
 int
 lpfc_sli4_get_avail_extnt_rsrc(struct lpfc_hba *phba, uint16_t type,
                    uint16_t *extnt_count, uint16_t *extnt_size)
 {
     int rc = 0;
     uint32_t length;
     uint32_t mbox_tmo;
     struct lpfc_mbx_get_rsrc_extent_info *rsrc_info;
     LPFC_MBOXQ_t *mbox;
 
     mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox)
         return -ENOMEM;
 
     /* Find out how many extents are available for this resource type */
     length = (sizeof(struct lpfc_mbx_get_rsrc_extent_info) -
           sizeof(struct lpfc_sli4_cfg_mhdr));
     lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
              LPFC_MBOX_OPCODE_GET_RSRC_EXTENT_INFO,
              length, LPFC_SLI4_MBX_EMBED);
 
     /* Send an extents count of 0 - the GET doesn't use it. */
     rc = lpfc_sli4_mbox_rsrc_extent(phba, mbox, 0, type,
                     LPFC_SLI4_MBX_EMBED);
     if (unlikely(rc)) {
         rc = -EIO;
         goto err_exit;
     }
 
     if (!phba->sli4_hba.intr_enable)
         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
     else {
         mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
         rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
     }
     if (unlikely(rc)) {
         rc = -EIO;
         goto err_exit;
     }
 
     rsrc_info = &mbox->u.mqe.un.rsrc_extent_info;
     if (bf_get(lpfc_mbox_hdr_status,
            &rsrc_info->header.cfg_shdr.response)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2930 Failed to get resource extents "
                 "Status 0x%x Add'l Status 0x%x\n",
                 bf_get(lpfc_mbox_hdr_status,
                        &rsrc_info->header.cfg_shdr.response),
                 bf_get(lpfc_mbox_hdr_add_status,
                        &rsrc_info->header.cfg_shdr.response));
         rc = -EIO;
         goto err_exit;
     }
 
     *extnt_count = bf_get(lpfc_mbx_get_rsrc_extent_info_cnt,
                   &rsrc_info->u.rsp);
     *extnt_size = bf_get(lpfc_mbx_get_rsrc_extent_info_size,
                  &rsrc_info->u.rsp);
 
     lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
             "3162 Retrieved extents type-%d from port: count:%d, "
             "size:%d\n", type, *extnt_count, *extnt_size);
 
 err_exit:
     mempool_free(mbox, phba->mbox_mem_pool);
     return rc;
 }
 
 /**
  * lpfc_sli4_chk_avail_extnt_rsrc - Check for available SLI4 resource extents.
  * @phba: Pointer to HBA context object.
  * @type: The extent type to check.
  *
  * This function reads the current available extents from the port and checks
  * if the extent count or extent size has changed since the last access.
  * Callers use this routine post port reset to understand if there is a
  * extent reprovisioning requirement.
  *
  * Returns:
  *   -Error: error indicates problem.
  *   1: Extent count or size has changed.
  *   0: No changes.
  **/
 static int
 lpfc_sli4_chk_avail_extnt_rsrc(struct lpfc_hba *phba, uint16_t type)
 {
     uint16_t curr_ext_cnt, rsrc_ext_cnt;
     uint16_t size_diff, rsrc_ext_size;
     int rc = 0;
     struct lpfc_rsrc_blks *rsrc_entry;
     struct list_head *rsrc_blk_list = NULL;
 
     size_diff = 0;
     curr_ext_cnt = 0;
     rc = lpfc_sli4_get_avail_extnt_rsrc(phba, type,
                         &rsrc_ext_cnt,
                         &rsrc_ext_size);
     if (unlikely(rc))
         return -EIO;
 
     switch (type) {
     case LPFC_RSC_TYPE_FCOE_RPI:
         rsrc_blk_list = &phba->sli4_hba.lpfc_rpi_blk_list;
         break;
     case LPFC_RSC_TYPE_FCOE_VPI:
         rsrc_blk_list = &phba->lpfc_vpi_blk_list;
         break;
     case LPFC_RSC_TYPE_FCOE_XRI:
         rsrc_blk_list = &phba->sli4_hba.lpfc_xri_blk_list;
         break;
     case LPFC_RSC_TYPE_FCOE_VFI:
         rsrc_blk_list = &phba->sli4_hba.lpfc_vfi_blk_list;
         break;
     default:
         break;
     }
 
     list_for_each_entry(rsrc_entry, rsrc_blk_list, list) {
         curr_ext_cnt++;
         if (rsrc_entry->rsrc_size != rsrc_ext_size)
             size_diff++;
     }
 
     if (curr_ext_cnt != rsrc_ext_cnt || size_diff != 0)
         rc = 1;
 
     return rc;
 }
 
 /**
  * lpfc_sli4_cfg_post_extnts -
  * @phba: Pointer to HBA context object.
  * @extnt_cnt: number of available extents.
  * @type: the extent type (rpi, xri, vfi, vpi).
  * @emb: buffer to hold either MBX_EMBED or MBX_NEMBED operation.
  * @mbox: pointer to the caller's allocated mailbox structure.
  *
  * This function executes the extents allocation request.  It also
  * takes care of the amount of memory needed to allocate or get the
  * allocated extents. It is the caller's responsibility to evaluate
  * the response.
  *
  * Returns:
  *   -Error:  Error value describes the condition found.
  *   0: if successful
  **/
 static int
 lpfc_sli4_cfg_post_extnts(struct lpfc_hba *phba, uint16_t extnt_cnt,
               uint16_t type, bool *emb, LPFC_MBOXQ_t *mbox)
 {
     int rc = 0;
     uint32_t req_len;
     uint32_t emb_len;
     uint32_t alloc_len, mbox_tmo;
 
     /* Calculate the total requested length of the dma memory */
     req_len = extnt_cnt * sizeof(uint16_t);
 
     /*
      * Calculate the size of an embedded mailbox.  The uint32_t
      * accounts for extents-specific word.
      */
     emb_len = sizeof(MAILBOX_t) - sizeof(struct mbox_header) -
         sizeof(uint32_t);
 
     /*
      * Presume the allocation and response will fit into an embedded
      * mailbox.  If not true, reconfigure to a non-embedded mailbox.
      */
     *emb = LPFC_SLI4_MBX_EMBED;
     if (req_len > emb_len) {
         req_len = extnt_cnt * sizeof(uint16_t) +
             sizeof(union lpfc_sli4_cfg_shdr) +
             sizeof(uint32_t);
         *emb = LPFC_SLI4_MBX_NEMBED;
     }
 
     alloc_len = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
                      LPFC_MBOX_OPCODE_ALLOC_RSRC_EXTENT,
                      req_len, *emb);
     if (alloc_len < req_len) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "2982 Allocated DMA memory size (x%x) is "
             "less than the requested DMA memory "
             "size (x%x)\n", alloc_len, req_len);
         return -ENOMEM;
     }
     rc = lpfc_sli4_mbox_rsrc_extent(phba, mbox, extnt_cnt, type, *emb);
     if (unlikely(rc))
         return -EIO;
 
     if (!phba->sli4_hba.intr_enable)
         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
     else {
         mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
         rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
     }
 
     if (unlikely(rc))
         rc = -EIO;
     return rc;
 }
 
 /**
  * lpfc_sli4_alloc_extent - Allocate an SLI4 resource extent.
  * @phba: Pointer to HBA context object.
  * @type:  The resource extent type to allocate.
  *
  * This function allocates the number of elements for the specified
  * resource type.
  **/
 static int
 lpfc_sli4_alloc_extent(struct lpfc_hba *phba, uint16_t type)
 {
     bool emb = false;
     uint16_t rsrc_id_cnt, rsrc_cnt, rsrc_size;
     uint16_t rsrc_id, rsrc_start, j, k;
     uint16_t *ids;
     int i, rc;
     unsigned long longs;
     unsigned long *bmask;
     struct lpfc_rsrc_blks *rsrc_blks;
     LPFC_MBOXQ_t *mbox;
     uint32_t length;
     struct lpfc_id_range *id_array = NULL;
     void *virtaddr = NULL;
     struct lpfc_mbx_nembed_rsrc_extent *n_rsrc;
     struct lpfc_mbx_alloc_rsrc_extents *rsrc_ext;
     struct list_head *ext_blk_list;
 
     rc = lpfc_sli4_get_avail_extnt_rsrc(phba, type,
                         &rsrc_cnt,
                         &rsrc_size);
     if (unlikely(rc))
         return -EIO;
 
     if ((rsrc_cnt == 0) || (rsrc_size == 0)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "3009 No available Resource Extents "
             "for resource type 0x%x: Count: 0x%x, "
             "Size 0x%x\n", type, rsrc_cnt,
             rsrc_size);
         return -ENOMEM;
     }
 
     lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_INIT | LOG_SLI,
             "2903 Post resource extents type-0x%x: "
             "count:%d, size %d\n", type, rsrc_cnt, rsrc_size);
 
     mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox)
         return -ENOMEM;
 
     rc = lpfc_sli4_cfg_post_extnts(phba, rsrc_cnt, type, &emb, mbox);
     if (unlikely(rc)) {
         rc = -EIO;
         goto err_exit;
     }
 
     /*
      * Figure out where the response is located.  Then get local pointers
      * to the response data.  The port does not guarantee to respond to
      * all extents counts request so update the local variable with the
      * allocated count from the port.
      */
     if (emb == LPFC_SLI4_MBX_EMBED) {
         rsrc_ext = &mbox->u.mqe.un.alloc_rsrc_extents;
         id_array = &rsrc_ext->u.rsp.id[0];
         rsrc_cnt = bf_get(lpfc_mbx_rsrc_cnt, &rsrc_ext->u.rsp);
     } else {
         virtaddr = mbox->sge_array->addr[0];
         n_rsrc = (struct lpfc_mbx_nembed_rsrc_extent *) virtaddr;
         rsrc_cnt = bf_get(lpfc_mbx_rsrc_cnt, n_rsrc);
         id_array = &n_rsrc->id;
     }
 
     longs = ((rsrc_cnt * rsrc_size) + BITS_PER_LONG - 1) / BITS_PER_LONG;
     rsrc_id_cnt = rsrc_cnt * rsrc_size;
 
     /*
      * Based on the resource size and count, correct the base and max
      * resource values.
      */
     length = sizeof(struct lpfc_rsrc_blks);
     switch (type) {
     case LPFC_RSC_TYPE_FCOE_RPI:
         phba->sli4_hba.rpi_bmask = kcalloc(longs,
                            sizeof(unsigned long),
                            GFP_KERNEL);
         if (unlikely(!phba->sli4_hba.rpi_bmask)) {
             rc = -ENOMEM;
             goto err_exit;
         }
         phba->sli4_hba.rpi_ids = kcalloc(rsrc_id_cnt,
                          sizeof(uint16_t),
                          GFP_KERNEL);
         if (unlikely(!phba->sli4_hba.rpi_ids)) {
             kfree(phba->sli4_hba.rpi_bmask);
             rc = -ENOMEM;
             goto err_exit;
         }
 
         /*
          * The next_rpi was initialized with the maximum available
          * count but the port may allocate a smaller number.  Catch
          * that case and update the next_rpi.
          */
         phba->sli4_hba.next_rpi = rsrc_id_cnt;
 
         /* Initialize local ptrs for common extent processing later. */
         bmask = phba->sli4_hba.rpi_bmask;
         ids = phba->sli4_hba.rpi_ids;
         ext_blk_list = &phba->sli4_hba.lpfc_rpi_blk_list;
         break;
     case LPFC_RSC_TYPE_FCOE_VPI:
         phba->vpi_bmask = kcalloc(longs, sizeof(unsigned long),
                       GFP_KERNEL);
         if (unlikely(!phba->vpi_bmask)) {
             rc = -ENOMEM;
             goto err_exit;
         }
         phba->vpi_ids = kcalloc(rsrc_id_cnt, sizeof(uint16_t),
                      GFP_KERNEL);
         if (unlikely(!phba->vpi_ids)) {
             kfree(phba->vpi_bmask);
             rc = -ENOMEM;
             goto err_exit;
         }
 
         /* Initialize local ptrs for common extent processing later. */
         bmask = phba->vpi_bmask;
         ids = phba->vpi_ids;
         ext_blk_list = &phba->lpfc_vpi_blk_list;
         break;
     case LPFC_RSC_TYPE_FCOE_XRI:
         phba->sli4_hba.xri_bmask = kcalloc(longs,
                            sizeof(unsigned long),
                            GFP_KERNEL);
         if (unlikely(!phba->sli4_hba.xri_bmask)) {
             rc = -ENOMEM;
             goto err_exit;
         }
         phba->sli4_hba.max_cfg_param.xri_used = 0;
         phba->sli4_hba.xri_ids = kcalloc(rsrc_id_cnt,
                          sizeof(uint16_t),
                          GFP_KERNEL);
         if (unlikely(!phba->sli4_hba.xri_ids)) {
             kfree(phba->sli4_hba.xri_bmask);
             rc = -ENOMEM;
             goto err_exit;
         }
 
         /* Initialize local ptrs for common extent processing later. */
         bmask = phba->sli4_hba.xri_bmask;
         ids = phba->sli4_hba.xri_ids;
         ext_blk_list = &phba->sli4_hba.lpfc_xri_blk_list;
         break;
     case LPFC_RSC_TYPE_FCOE_VFI:
         phba->sli4_hba.vfi_bmask = kcalloc(longs,
                            sizeof(unsigned long),
                            GFP_KERNEL);
         if (unlikely(!phba->sli4_hba.vfi_bmask)) {
             rc = -ENOMEM;
             goto err_exit;
         }
         phba->sli4_hba.vfi_ids = kcalloc(rsrc_id_cnt,
                          sizeof(uint16_t),
                          GFP_KERNEL);
         if (unlikely(!phba->sli4_hba.vfi_ids)) {
             kfree(phba->sli4_hba.vfi_bmask);
             rc = -ENOMEM;
             goto err_exit;
         }
 
         /* Initialize local ptrs for common extent processing later. */
         bmask = phba->sli4_hba.vfi_bmask;
         ids = phba->sli4_hba.vfi_ids;
         ext_blk_list = &phba->sli4_hba.lpfc_vfi_blk_list;
         break;
     default:
         /* Unsupported Opcode.  Fail call. */
         id_array = NULL;
         bmask = NULL;
         ids = NULL;
         ext_blk_list = NULL;
         goto err_exit;
     }
 
     /*
      * Complete initializing the extent configuration with the
      * allocated ids assigned to this function.  The bitmask serves
      * as an index into the array and manages the available ids.  The
      * array just stores the ids communicated to the port via the wqes.
      */
     for (i = 0, j = 0, k = 0; i < rsrc_cnt; i++) {
         if ((i % 2) == 0)
             rsrc_id = bf_get(lpfc_mbx_rsrc_id_word4_0,
                      &id_array[k]);
         else
             rsrc_id = bf_get(lpfc_mbx_rsrc_id_word4_1,
                      &id_array[k]);
 
         rsrc_blks = kzalloc(length, GFP_KERNEL);
         if (unlikely(!rsrc_blks)) {
             rc = -ENOMEM;
             kfree(bmask);
             kfree(ids);
             goto err_exit;
         }
         rsrc_blks->rsrc_start = rsrc_id;
         rsrc_blks->rsrc_size = rsrc_size;
         list_add_tail(&rsrc_blks->list, ext_blk_list);
         rsrc_start = rsrc_id;
         if ((type == LPFC_RSC_TYPE_FCOE_XRI) && (j == 0)) {
             phba->sli4_hba.io_xri_start = rsrc_start +
                 lpfc_sli4_get_iocb_cnt(phba);
         }
 
         while (rsrc_id < (rsrc_start + rsrc_size)) {
             ids[j] = rsrc_id;
             rsrc_id++;
             j++;
         }
         /* Entire word processed.  Get next word.*/
         if ((i % 2) == 1)
             k++;
     }
  err_exit:
     lpfc_sli4_mbox_cmd_free(phba, mbox);
     return rc;
 }
 
 
 
 /**
  * lpfc_sli4_dealloc_extent - Deallocate an SLI4 resource extent.
  * @phba: Pointer to HBA context object.
  * @type: the extent's type.
  *
  * This function deallocates all extents of a particular resource type.
  * SLI4 does not allow for deallocating a particular extent range.  It
  * is the caller's responsibility to release all kernel memory resources.
  **/
 static int
 lpfc_sli4_dealloc_extent(struct lpfc_hba *phba, uint16_t type)
 {
     int rc;
     uint32_t length, mbox_tmo = 0;
     LPFC_MBOXQ_t *mbox;
     struct lpfc_mbx_dealloc_rsrc_extents *dealloc_rsrc;
     struct lpfc_rsrc_blks *rsrc_blk, *rsrc_blk_next;
 
     mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox)
         return -ENOMEM;
 
     /*
      * This function sends an embedded mailbox because it only sends the
      * the resource type.  All extents of this type are released by the
      * port.
      */
     length = (sizeof(struct lpfc_mbx_dealloc_rsrc_extents) -
           sizeof(struct lpfc_sli4_cfg_mhdr));
     lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
              LPFC_MBOX_OPCODE_DEALLOC_RSRC_EXTENT,
              length, LPFC_SLI4_MBX_EMBED);
 
     /* Send an extents count of 0 - the dealloc doesn't use it. */
     rc = lpfc_sli4_mbox_rsrc_extent(phba, mbox, 0, type,
                     LPFC_SLI4_MBX_EMBED);
     if (unlikely(rc)) {
         rc = -EIO;
         goto out_free_mbox;
     }
     if (!phba->sli4_hba.intr_enable)
         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
     else {
         mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
         rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
     }
     if (unlikely(rc)) {
         rc = -EIO;
         goto out_free_mbox;
     }
 
     dealloc_rsrc = &mbox->u.mqe.un.dealloc_rsrc_extents;
     if (bf_get(lpfc_mbox_hdr_status,
            &dealloc_rsrc->header.cfg_shdr.response)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2919 Failed to release resource extents "
                 "for type %d - Status 0x%x Add'l Status 0x%x. "
                 "Resource memory not released.\n",
                 type,
                 bf_get(lpfc_mbox_hdr_status,
                     &dealloc_rsrc->header.cfg_shdr.response),
                 bf_get(lpfc_mbox_hdr_add_status,
                     &dealloc_rsrc->header.cfg_shdr.response));
         rc = -EIO;
         goto out_free_mbox;
     }
 
     /* Release kernel memory resources for the specific type. */
     switch (type) {
     case LPFC_RSC_TYPE_FCOE_VPI:
         kfree(phba->vpi_bmask);
         kfree(phba->vpi_ids);
         bf_set(lpfc_vpi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
         list_for_each_entry_safe(rsrc_blk, rsrc_blk_next,
                     &phba->lpfc_vpi_blk_list, list) {
             list_del_init(&rsrc_blk->list);
             kfree(rsrc_blk);
         }
         phba->sli4_hba.max_cfg_param.vpi_used = 0;
         break;
     case LPFC_RSC_TYPE_FCOE_XRI:
         kfree(phba->sli4_hba.xri_bmask);
         kfree(phba->sli4_hba.xri_ids);
         list_for_each_entry_safe(rsrc_blk, rsrc_blk_next,
                     &phba->sli4_hba.lpfc_xri_blk_list, list) {
             list_del_init(&rsrc_blk->list);
             kfree(rsrc_blk);
         }
         break;
     case LPFC_RSC_TYPE_FCOE_VFI:
         kfree(phba->sli4_hba.vfi_bmask);
         kfree(phba->sli4_hba.vfi_ids);
         bf_set(lpfc_vfi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
         list_for_each_entry_safe(rsrc_blk, rsrc_blk_next,
                     &phba->sli4_hba.lpfc_vfi_blk_list, list) {
             list_del_init(&rsrc_blk->list);
             kfree(rsrc_blk);
         }
         break;
     case LPFC_RSC_TYPE_FCOE_RPI:
         /* RPI bitmask and physical id array are cleaned up earlier. */
         list_for_each_entry_safe(rsrc_blk, rsrc_blk_next,
                     &phba->sli4_hba.lpfc_rpi_blk_list, list) {
             list_del_init(&rsrc_blk->list);
             kfree(rsrc_blk);
         }
         break;
     default:
         break;
     }
 
     bf_set(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
 
  out_free_mbox:
     mempool_free(mbox, phba->mbox_mem_pool);
     return rc;
 }
 
 static void
 lpfc_set_features(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbox,
           uint32_t feature)
 {
     uint32_t len;
     u32 sig_freq = 0;
 
     len = sizeof(struct lpfc_mbx_set_feature) -
         sizeof(struct lpfc_sli4_cfg_mhdr);
     lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
              LPFC_MBOX_OPCODE_SET_FEATURES, len,
              LPFC_SLI4_MBX_EMBED);
 
     switch (feature) {
     case LPFC_SET_UE_RECOVERY:
         bf_set(lpfc_mbx_set_feature_UER,
                &mbox->u.mqe.un.set_feature, 1);
         mbox->u.mqe.un.set_feature.feature = LPFC_SET_UE_RECOVERY;
         mbox->u.mqe.un.set_feature.param_len = 8;
         break;
     case LPFC_SET_MDS_DIAGS:
         bf_set(lpfc_mbx_set_feature_mds,
                &mbox->u.mqe.un.set_feature, 1);
         bf_set(lpfc_mbx_set_feature_mds_deep_loopbk,
                &mbox->u.mqe.un.set_feature, 1);
         mbox->u.mqe.un.set_feature.feature = LPFC_SET_MDS_DIAGS;
         mbox->u.mqe.un.set_feature.param_len = 8;
         break;
     case LPFC_SET_CGN_SIGNAL:
         if (phba->cmf_active_mode == LPFC_CFG_OFF)
             sig_freq = 0;
         else
             sig_freq = phba->cgn_sig_freq;
 
         if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) {
             bf_set(lpfc_mbx_set_feature_CGN_alarm_freq,
                    &mbox->u.mqe.un.set_feature, sig_freq);
             bf_set(lpfc_mbx_set_feature_CGN_warn_freq,
                    &mbox->u.mqe.un.set_feature, sig_freq);
         }
 
         if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY)
             bf_set(lpfc_mbx_set_feature_CGN_warn_freq,
                    &mbox->u.mqe.un.set_feature, sig_freq);
 
         if (phba->cmf_active_mode == LPFC_CFG_OFF ||
             phba->cgn_reg_signal == EDC_CG_SIG_NOTSUPPORTED)
             sig_freq = 0;
         else
             sig_freq = lpfc_acqe_cgn_frequency;
 
         bf_set(lpfc_mbx_set_feature_CGN_acqe_freq,
                &mbox->u.mqe.un.set_feature, sig_freq);
 
         mbox->u.mqe.un.set_feature.feature = LPFC_SET_CGN_SIGNAL;
         mbox->u.mqe.un.set_feature.param_len = 12;
         break;
     case LPFC_SET_DUAL_DUMP:
         bf_set(lpfc_mbx_set_feature_dd,
                &mbox->u.mqe.un.set_feature, LPFC_ENABLE_DUAL_DUMP);
         bf_set(lpfc_mbx_set_feature_ddquery,
                &mbox->u.mqe.un.set_feature, 0);
         mbox->u.mqe.un.set_feature.feature = LPFC_SET_DUAL_DUMP;
         mbox->u.mqe.un.set_feature.param_len = 4;
         break;
     case LPFC_SET_ENABLE_MI:
         mbox->u.mqe.un.set_feature.feature = LPFC_SET_ENABLE_MI;
         mbox->u.mqe.un.set_feature.param_len = 4;
         bf_set(lpfc_mbx_set_feature_milunq, &mbox->u.mqe.un.set_feature,
                phba->pport->cfg_lun_queue_depth);
         bf_set(lpfc_mbx_set_feature_mi, &mbox->u.mqe.un.set_feature,
                phba->sli4_hba.pc_sli4_params.mi_ver);
         break;
     case LPFC_SET_ENABLE_CMF:
         bf_set(lpfc_mbx_set_feature_dd, &mbox->u.mqe.un.set_feature, 1);
         mbox->u.mqe.un.set_feature.feature = LPFC_SET_ENABLE_CMF;
         mbox->u.mqe.un.set_feature.param_len = 4;
         bf_set(lpfc_mbx_set_feature_cmf,
                &mbox->u.mqe.un.set_feature, 1);
         break;
     }
     return;
 }
 
 /**
  * lpfc_ras_stop_fwlog: Disable FW logging by the adapter
  * @phba: Pointer to HBA context object.
  *
  * Disable FW logging into host memory on the adapter. To
  * be done before reading logs from the host memory.
  **/
 void
 lpfc_ras_stop_fwlog(struct lpfc_hba *phba)
 {
     struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
 
     spin_lock_irq(&phba->hbalock);
     ras_fwlog->state = INACTIVE;
     spin_unlock_irq(&phba->hbalock);
 
     /* Disable FW logging to host memory */
     writel(LPFC_CTL_PDEV_CTL_DDL_RAS,
            phba->sli4_hba.conf_regs_memmap_p + LPFC_CTL_PDEV_CTL_OFFSET);
 
     /* Wait 10ms for firmware to stop using DMA buffer */
     usleep_range(10 * 1000, 20 * 1000);
 }
 
 /**
  * lpfc_sli4_ras_dma_free - Free memory allocated for FW logging.
  * @phba: Pointer to HBA context object.
  *
  * This function is called to free memory allocated for RAS FW logging
  * support in the driver.
  **/
 void
 lpfc_sli4_ras_dma_free(struct lpfc_hba *phba)
 {
     struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
     struct lpfc_dmabuf *dmabuf, *next;
 
     if (!list_empty(&ras_fwlog->fwlog_buff_list)) {
         list_for_each_entry_safe(dmabuf, next,
                     &ras_fwlog->fwlog_buff_list,
                     list) {
             list_del(&dmabuf->list);
             dma_free_coherent(&phba->pcidev->dev,
                       LPFC_RAS_MAX_ENTRY_SIZE,
                       dmabuf->virt, dmabuf->phys);
             kfree(dmabuf);
         }
     }
 
     if (ras_fwlog->lwpd.virt) {
         dma_free_coherent(&phba->pcidev->dev,
                   sizeof(uint32_t) * 2,
                   ras_fwlog->lwpd.virt,
                   ras_fwlog->lwpd.phys);
         ras_fwlog->lwpd.virt = NULL;
     }
 
     spin_lock_irq(&phba->hbalock);
     ras_fwlog->state = INACTIVE;
     spin_unlock_irq(&phba->hbalock);
 }
 
 /**
  * lpfc_sli4_ras_dma_alloc: Allocate memory for FW support
  * @phba: Pointer to HBA context object.
  * @fwlog_buff_count: Count of buffers to be created.
  *
  * This routine DMA memory for Log Write Position Data[LPWD] and buffer
  * to update FW log is posted to the adapter.
  * Buffer count is calculated based on module param ras_fwlog_buffsize
  * Size of each buffer posted to FW is 64K.
  **/
 
 static int
 lpfc_sli4_ras_dma_alloc(struct lpfc_hba *phba,
             uint32_t fwlog_buff_count)
 {
     struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
     struct lpfc_dmabuf *dmabuf;
     int rc = 0, i = 0;
 
     /* Initialize List */
     INIT_LIST_HEAD(&ras_fwlog->fwlog_buff_list);
 
     /* Allocate memory for the LWPD */
     ras_fwlog->lwpd.virt = dma_alloc_coherent(&phba->pcidev->dev,
                         sizeof(uint32_t) * 2,
                         &ras_fwlog->lwpd.phys,
                         GFP_KERNEL);
     if (!ras_fwlog->lwpd.virt) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "6185 LWPD Memory Alloc Failed\n");
 
         return -ENOMEM;
     }
 
     ras_fwlog->fw_buffcount = fwlog_buff_count;
     for (i = 0; i < ras_fwlog->fw_buffcount; i++) {
         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf),
                  GFP_KERNEL);
         if (!dmabuf) {
             rc = -ENOMEM;
             lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                     "6186 Memory Alloc failed FW logging");
             goto free_mem;
         }
 
         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
                           LPFC_RAS_MAX_ENTRY_SIZE,
                           &dmabuf->phys, GFP_KERNEL);
         if (!dmabuf->virt) {
             kfree(dmabuf);
             rc = -ENOMEM;
             lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                     "6187 DMA Alloc Failed FW logging");
             goto free_mem;
         }
         dmabuf->buffer_tag = i;
         list_add_tail(&dmabuf->list, &ras_fwlog->fwlog_buff_list);
     }
 
 free_mem:
     if (rc)
         lpfc_sli4_ras_dma_free(phba);
 
     return rc;
 }
 
 /**
  * lpfc_sli4_ras_mbox_cmpl: Completion handler for RAS MBX command
  * @phba: pointer to lpfc hba data structure.
  * @pmb: pointer to the driver internal queue element for mailbox command.
  *
  * Completion handler for driver's RAS MBX command to the device.
  **/
 static void
 lpfc_sli4_ras_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     MAILBOX_t *mb;
     union lpfc_sli4_cfg_shdr *shdr;
     uint32_t shdr_status, shdr_add_status;
     struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
 
     mb = &pmb->u.mb;
 
     shdr = (union lpfc_sli4_cfg_shdr *)
         &pmb->u.mqe.un.ras_fwlog.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 (mb->mbxStatus != MBX_SUCCESS || shdr_status) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "6188 FW LOG mailbox "
                 "completed with status x%x add_status x%x,"
                 " mbx status x%x\n",
                 shdr_status, shdr_add_status, mb->mbxStatus);
 
         ras_fwlog->ras_hwsupport = false;
         goto disable_ras;
     }
 
     spin_lock_irq(&phba->hbalock);
     ras_fwlog->state = ACTIVE;
     spin_unlock_irq(&phba->hbalock);
     mempool_free(pmb, phba->mbox_mem_pool);
 
     return;
 
 disable_ras:
     /* Free RAS DMA memory */
     lpfc_sli4_ras_dma_free(phba);
     mempool_free(pmb, phba->mbox_mem_pool);
 }
 
 /**
  * lpfc_sli4_ras_fwlog_init: Initialize memory and post RAS MBX command
  * @phba: pointer to lpfc hba data structure.
  * @fwlog_level: Logging verbosity level.
  * @fwlog_enable: Enable/Disable logging.
  *
  * Initialize memory and post mailbox command to enable FW logging in host
  * memory.
  **/
 int
 lpfc_sli4_ras_fwlog_init(struct lpfc_hba *phba,
              uint32_t fwlog_level,
              uint32_t fwlog_enable)
 {
     struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
     struct lpfc_mbx_set_ras_fwlog *mbx_fwlog = NULL;
     struct lpfc_dmabuf *dmabuf;
     LPFC_MBOXQ_t *mbox;
     uint32_t len = 0, fwlog_buffsize, fwlog_entry_count;
     int rc = 0;
 
     spin_lock_irq(&phba->hbalock);
     ras_fwlog->state = INACTIVE;
     spin_unlock_irq(&phba->hbalock);
 
     fwlog_buffsize = (LPFC_RAS_MIN_BUFF_POST_SIZE *
               phba->cfg_ras_fwlog_buffsize);
     fwlog_entry_count = (fwlog_buffsize/LPFC_RAS_MAX_ENTRY_SIZE);
 
     /*
      * If re-enabling FW logging support use earlier allocated
      * DMA buffers while posting MBX command.
      **/
     if (!ras_fwlog->lwpd.virt) {
         rc = lpfc_sli4_ras_dma_alloc(phba, fwlog_entry_count);
         if (rc) {
             lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                     "6189 FW Log Memory Allocation Failed");
             return rc;
         }
     }
 
     /* Setup Mailbox command */
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "6190 RAS MBX Alloc Failed");
         rc = -ENOMEM;
         goto mem_free;
     }
 
     ras_fwlog->fw_loglevel = fwlog_level;
     len = (sizeof(struct lpfc_mbx_set_ras_fwlog) -
         sizeof(struct lpfc_sli4_cfg_mhdr));
 
     lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_LOWLEVEL,
              LPFC_MBOX_OPCODE_SET_DIAG_LOG_OPTION,
              len, LPFC_SLI4_MBX_EMBED);
 
     mbx_fwlog = (struct lpfc_mbx_set_ras_fwlog *)&mbox->u.mqe.un.ras_fwlog;
     bf_set(lpfc_fwlog_enable, &mbx_fwlog->u.request,
            fwlog_enable);
     bf_set(lpfc_fwlog_loglvl, &mbx_fwlog->u.request,
            ras_fwlog->fw_loglevel);
     bf_set(lpfc_fwlog_buffcnt, &mbx_fwlog->u.request,
            ras_fwlog->fw_buffcount);
     bf_set(lpfc_fwlog_buffsz, &mbx_fwlog->u.request,
            LPFC_RAS_MAX_ENTRY_SIZE/SLI4_PAGE_SIZE);
 
     /* Update DMA buffer address */
     list_for_each_entry(dmabuf, &ras_fwlog->fwlog_buff_list, list) {
         memset(dmabuf->virt, 0, LPFC_RAS_MAX_ENTRY_SIZE);
 
         mbx_fwlog->u.request.buff_fwlog[dmabuf->buffer_tag].addr_lo =
             putPaddrLow(dmabuf->phys);
 
         mbx_fwlog->u.request.buff_fwlog[dmabuf->buffer_tag].addr_hi =
             putPaddrHigh(dmabuf->phys);
     }
 
     /* Update LPWD address */
     mbx_fwlog->u.request.lwpd.addr_lo = putPaddrLow(ras_fwlog->lwpd.phys);
     mbx_fwlog->u.request.lwpd.addr_hi = putPaddrHigh(ras_fwlog->lwpd.phys);
 
     spin_lock_irq(&phba->hbalock);
     ras_fwlog->state = REG_INPROGRESS;
     spin_unlock_irq(&phba->hbalock);
     mbox->vport = phba->pport;
     mbox->mbox_cmpl = lpfc_sli4_ras_mbox_cmpl;
 
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 
     if (rc == MBX_NOT_FINISHED) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "6191 FW-Log Mailbox failed. "
                 "status %d mbxStatus : x%x", rc,
                 bf_get(lpfc_mqe_status, &mbox->u.mqe));
         mempool_free(mbox, phba->mbox_mem_pool);
         rc = -EIO;
         goto mem_free;
     } else
         rc = 0;
 mem_free:
     if (rc)
         lpfc_sli4_ras_dma_free(phba);
 
     return rc;
 }
 
 /**
  * lpfc_sli4_ras_setup - Check if RAS supported on the adapter
  * @phba: Pointer to HBA context object.
  *
  * Check if RAS is supported on the adapter and initialize it.
  **/
 void
 lpfc_sli4_ras_setup(struct lpfc_hba *phba)
 {
     /* Check RAS FW Log needs to be enabled or not */
     if (lpfc_check_fwlog_support(phba))
         return;
 
     lpfc_sli4_ras_fwlog_init(phba, phba->cfg_ras_fwlog_level,
                  LPFC_RAS_ENABLE_LOGGING);
 }
 
 /**
  * lpfc_sli4_alloc_resource_identifiers - Allocate all SLI4 resource extents.
  * @phba: Pointer to HBA context object.
  *
  * This function allocates all SLI4 resource identifiers.
  **/
 int
 lpfc_sli4_alloc_resource_identifiers(struct lpfc_hba *phba)
 {
     int i, rc, error = 0;
     uint16_t count, base;
     unsigned long longs;
 
     if (!phba->sli4_hba.rpi_hdrs_in_use)
         phba->sli4_hba.next_rpi = phba->sli4_hba.max_cfg_param.max_rpi;
     if (phba->sli4_hba.extents_in_use) {
         /*
          * The port supports resource extents. The XRI, VPI, VFI, RPI
          * resource extent count must be read and allocated before
          * provisioning the resource id arrays.
          */
         if (bf_get(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags) ==
             LPFC_IDX_RSRC_RDY) {
             /*
              * Extent-based resources are set - the driver could
              * be in a port reset. Figure out if any corrective
              * actions need to be taken.
              */
             rc = lpfc_sli4_chk_avail_extnt_rsrc(phba,
                          LPFC_RSC_TYPE_FCOE_VFI);
             if (rc != 0)
                 error++;
             rc = lpfc_sli4_chk_avail_extnt_rsrc(phba,
                          LPFC_RSC_TYPE_FCOE_VPI);
             if (rc != 0)
                 error++;
             rc = lpfc_sli4_chk_avail_extnt_rsrc(phba,
                          LPFC_RSC_TYPE_FCOE_XRI);
             if (rc != 0)
                 error++;
             rc = lpfc_sli4_chk_avail_extnt_rsrc(phba,
                          LPFC_RSC_TYPE_FCOE_RPI);
             if (rc != 0)
                 error++;
 
             /*
              * It's possible that the number of resources
              * provided to this port instance changed between
              * resets.  Detect this condition and reallocate
              * resources.  Otherwise, there is no action.
              */
             if (error) {
                 lpfc_printf_log(phba, KERN_INFO,
                         LOG_MBOX | LOG_INIT,
                         "2931 Detected extent resource "
                         "change.  Reallocating all "
                         "extents.\n");
                 rc = lpfc_sli4_dealloc_extent(phba,
                          LPFC_RSC_TYPE_FCOE_VFI);
                 rc = lpfc_sli4_dealloc_extent(phba,
                          LPFC_RSC_TYPE_FCOE_VPI);
                 rc = lpfc_sli4_dealloc_extent(phba,
                          LPFC_RSC_TYPE_FCOE_XRI);
                 rc = lpfc_sli4_dealloc_extent(phba,
                          LPFC_RSC_TYPE_FCOE_RPI);
             } else
                 return 0;
         }
 
         rc = lpfc_sli4_alloc_extent(phba, LPFC_RSC_TYPE_FCOE_VFI);
         if (unlikely(rc))
             goto err_exit;
 
         rc = lpfc_sli4_alloc_extent(phba, LPFC_RSC_TYPE_FCOE_VPI);
         if (unlikely(rc))
             goto err_exit;
 
         rc = lpfc_sli4_alloc_extent(phba, LPFC_RSC_TYPE_FCOE_RPI);
         if (unlikely(rc))
             goto err_exit;
 
         rc = lpfc_sli4_alloc_extent(phba, LPFC_RSC_TYPE_FCOE_XRI);
         if (unlikely(rc))
             goto err_exit;
         bf_set(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags,
                LPFC_IDX_RSRC_RDY);
         return rc;
     } else {
         /*
          * The port does not support resource extents.  The XRI, VPI,
          * VFI, RPI resource ids were determined from READ_CONFIG.
          * Just allocate the bitmasks and provision the resource id
          * arrays.  If a port reset is active, the resources don't
          * need any action - just exit.
          */
         if (bf_get(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags) ==
             LPFC_IDX_RSRC_RDY) {
             lpfc_sli4_dealloc_resource_identifiers(phba);
             lpfc_sli4_remove_rpis(phba);
         }
         /* RPIs. */
         count = phba->sli4_hba.max_cfg_param.max_rpi;
         if (count <= 0) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "3279 Invalid provisioning of "
                     "rpi:%d\n", count);
             rc = -EINVAL;
             goto err_exit;
         }
         base = phba->sli4_hba.max_cfg_param.rpi_base;
         longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG;
         phba->sli4_hba.rpi_bmask = kcalloc(longs,
                            sizeof(unsigned long),
                            GFP_KERNEL);
         if (unlikely(!phba->sli4_hba.rpi_bmask)) {
             rc = -ENOMEM;
             goto err_exit;
         }
         phba->sli4_hba.rpi_ids = kcalloc(count, sizeof(uint16_t),
                          GFP_KERNEL);
         if (unlikely(!phba->sli4_hba.rpi_ids)) {
             rc = -ENOMEM;
             goto free_rpi_bmask;
         }
 
         for (i = 0; i < count; i++)
             phba->sli4_hba.rpi_ids[i] = base + i;
 
         /* VPIs. */
         count = phba->sli4_hba.max_cfg_param.max_vpi;
         if (count <= 0) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "3280 Invalid provisioning of "
                     "vpi:%d\n", count);
             rc = -EINVAL;
             goto free_rpi_ids;
         }
         base = phba->sli4_hba.max_cfg_param.vpi_base;
         longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG;
         phba->vpi_bmask = kcalloc(longs, sizeof(unsigned long),
                       GFP_KERNEL);
         if (unlikely(!phba->vpi_bmask)) {
             rc = -ENOMEM;
             goto free_rpi_ids;
         }
         phba->vpi_ids = kcalloc(count, sizeof(uint16_t),
                     GFP_KERNEL);
         if (unlikely(!phba->vpi_ids)) {
             rc = -ENOMEM;
             goto free_vpi_bmask;
         }
 
         for (i = 0; i < count; i++)
             phba->vpi_ids[i] = base + i;
 
         /* XRIs. */
         count = phba->sli4_hba.max_cfg_param.max_xri;
         if (count <= 0) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "3281 Invalid provisioning of "
                     "xri:%d\n", count);
             rc = -EINVAL;
             goto free_vpi_ids;
         }
         base = phba->sli4_hba.max_cfg_param.xri_base;
         longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG;
         phba->sli4_hba.xri_bmask = kcalloc(longs,
                            sizeof(unsigned long),
                            GFP_KERNEL);
         if (unlikely(!phba->sli4_hba.xri_bmask)) {
             rc = -ENOMEM;
             goto free_vpi_ids;
         }
         phba->sli4_hba.max_cfg_param.xri_used = 0;
         phba->sli4_hba.xri_ids = kcalloc(count, sizeof(uint16_t),
                          GFP_KERNEL);
         if (unlikely(!phba->sli4_hba.xri_ids)) {
             rc = -ENOMEM;
             goto free_xri_bmask;
         }
 
         for (i = 0; i < count; i++)
             phba->sli4_hba.xri_ids[i] = base + i;
 
         /* VFIs. */
         count = phba->sli4_hba.max_cfg_param.max_vfi;
         if (count <= 0) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "3282 Invalid provisioning of "
                     "vfi:%d\n", count);
             rc = -EINVAL;
             goto free_xri_ids;
         }
         base = phba->sli4_hba.max_cfg_param.vfi_base;
         longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG;
         phba->sli4_hba.vfi_bmask = kcalloc(longs,
                            sizeof(unsigned long),
                            GFP_KERNEL);
         if (unlikely(!phba->sli4_hba.vfi_bmask)) {
             rc = -ENOMEM;
             goto free_xri_ids;
         }
         phba->sli4_hba.vfi_ids = kcalloc(count, sizeof(uint16_t),
                          GFP_KERNEL);
         if (unlikely(!phba->sli4_hba.vfi_ids)) {
             rc = -ENOMEM;
             goto free_vfi_bmask;
         }
 
         for (i = 0; i < count; i++)
             phba->sli4_hba.vfi_ids[i] = base + i;
 
         /*
          * Mark all resources ready.  An HBA reset doesn't need
          * to reset the initialization.
          */
         bf_set(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags,
                LPFC_IDX_RSRC_RDY);
         return 0;
     }
 
  free_vfi_bmask:
     kfree(phba->sli4_hba.vfi_bmask);
     phba->sli4_hba.vfi_bmask = NULL;
  free_xri_ids:
     kfree(phba->sli4_hba.xri_ids);
     phba->sli4_hba.xri_ids = NULL;
  free_xri_bmask:
     kfree(phba->sli4_hba.xri_bmask);
     phba->sli4_hba.xri_bmask = NULL;
  free_vpi_ids:
     kfree(phba->vpi_ids);
     phba->vpi_ids = NULL;
  free_vpi_bmask:
     kfree(phba->vpi_bmask);
     phba->vpi_bmask = NULL;
  free_rpi_ids:
     kfree(phba->sli4_hba.rpi_ids);
     phba->sli4_hba.rpi_ids = NULL;
  free_rpi_bmask:
     kfree(phba->sli4_hba.rpi_bmask);
     phba->sli4_hba.rpi_bmask = NULL;
  err_exit:
     return rc;
 }
 
 /**
  * lpfc_sli4_dealloc_resource_identifiers - Deallocate all SLI4 resource extents.
  * @phba: Pointer to HBA context object.
  *
  * This function allocates the number of elements for the specified
  * resource type.
  **/
 int
 lpfc_sli4_dealloc_resource_identifiers(struct lpfc_hba *phba)
 {
     if (phba->sli4_hba.extents_in_use) {
         lpfc_sli4_dealloc_extent(phba, LPFC_RSC_TYPE_FCOE_VPI);
         lpfc_sli4_dealloc_extent(phba, LPFC_RSC_TYPE_FCOE_RPI);
         lpfc_sli4_dealloc_extent(phba, LPFC_RSC_TYPE_FCOE_XRI);
         lpfc_sli4_dealloc_extent(phba, LPFC_RSC_TYPE_FCOE_VFI);
     } else {
         kfree(phba->vpi_bmask);
         phba->sli4_hba.max_cfg_param.vpi_used = 0;
         kfree(phba->vpi_ids);
         bf_set(lpfc_vpi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
         kfree(phba->sli4_hba.xri_bmask);
         kfree(phba->sli4_hba.xri_ids);
         kfree(phba->sli4_hba.vfi_bmask);
         kfree(phba->sli4_hba.vfi_ids);
         bf_set(lpfc_vfi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
         bf_set(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
     }
 
     return 0;
 }
 
 /**
  * lpfc_sli4_get_allocated_extnts - Get the port's allocated extents.
  * @phba: Pointer to HBA context object.
  * @type: The resource extent type.
  * @extnt_cnt: buffer to hold port extent count response
  * @extnt_size: buffer to hold port extent size response.
  *
  * This function calls the port to read the host allocated extents
  * for a particular type.
  **/
 int
 lpfc_sli4_get_allocated_extnts(struct lpfc_hba *phba, uint16_t type,
                    uint16_t *extnt_cnt, uint16_t *extnt_size)
 {
     bool emb;
     int rc = 0;
     uint16_t curr_blks = 0;
     uint32_t req_len, emb_len;
     uint32_t alloc_len, mbox_tmo;
     struct list_head *blk_list_head;
     struct lpfc_rsrc_blks *rsrc_blk;
     LPFC_MBOXQ_t *mbox;
     void *virtaddr = NULL;
     struct lpfc_mbx_nembed_rsrc_extent *n_rsrc;
     struct lpfc_mbx_alloc_rsrc_extents *rsrc_ext;
     union  lpfc_sli4_cfg_shdr *shdr;
 
     switch (type) {
     case LPFC_RSC_TYPE_FCOE_VPI:
         blk_list_head = &phba->lpfc_vpi_blk_list;
         break;
     case LPFC_RSC_TYPE_FCOE_XRI:
         blk_list_head = &phba->sli4_hba.lpfc_xri_blk_list;
         break;
     case LPFC_RSC_TYPE_FCOE_VFI:
         blk_list_head = &phba->sli4_hba.lpfc_vfi_blk_list;
         break;
     case LPFC_RSC_TYPE_FCOE_RPI:
         blk_list_head = &phba->sli4_hba.lpfc_rpi_blk_list;
         break;
     default:
         return -EIO;
     }
 
     /* Count the number of extents currently allocatd for this type. */
     list_for_each_entry(rsrc_blk, blk_list_head, list) {
         if (curr_blks == 0) {
             /*
              * The GET_ALLOCATED mailbox does not return the size,
              * just the count.  The size should be just the size
              * stored in the current allocated block and all sizes
              * for an extent type are the same so set the return
              * value now.
              */
             *extnt_size = rsrc_blk->rsrc_size;
         }
         curr_blks++;
     }
 
     /*
      * Calculate the size of an embedded mailbox.  The uint32_t
      * accounts for extents-specific word.
      */
     emb_len = sizeof(MAILBOX_t) - sizeof(struct mbox_header) -
         sizeof(uint32_t);
 
     /*
      * Presume the allocation and response will fit into an embedded
      * mailbox.  If not true, reconfigure to a non-embedded mailbox.
      */
     emb = LPFC_SLI4_MBX_EMBED;
     req_len = emb_len;
     if (req_len > emb_len) {
         req_len = curr_blks * sizeof(uint16_t) +
             sizeof(union lpfc_sli4_cfg_shdr) +
             sizeof(uint32_t);
         emb = LPFC_SLI4_MBX_NEMBED;
     }
 
     mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox)
         return -ENOMEM;
     memset(mbox, 0, sizeof(LPFC_MBOXQ_t));
 
     alloc_len = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
                      LPFC_MBOX_OPCODE_GET_ALLOC_RSRC_EXTENT,
                      req_len, emb);
     if (alloc_len < req_len) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "2983 Allocated DMA memory size (x%x) is "
             "less than the requested DMA memory "
             "size (x%x)\n", alloc_len, req_len);
         rc = -ENOMEM;
         goto err_exit;
     }
     rc = lpfc_sli4_mbox_rsrc_extent(phba, mbox, curr_blks, type, emb);
     if (unlikely(rc)) {
         rc = -EIO;
         goto err_exit;
     }
 
     if (!phba->sli4_hba.intr_enable)
         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
     else {
         mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
         rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
     }
 
     if (unlikely(rc)) {
         rc = -EIO;
         goto err_exit;
     }
 
     /*
      * Figure out where the response is located.  Then get local pointers
      * to the response data.  The port does not guarantee to respond to
      * all extents counts request so update the local variable with the
      * allocated count from the port.
      */
     if (emb == LPFC_SLI4_MBX_EMBED) {
         rsrc_ext = &mbox->u.mqe.un.alloc_rsrc_extents;
         shdr = &rsrc_ext->header.cfg_shdr;
         *extnt_cnt = bf_get(lpfc_mbx_rsrc_cnt, &rsrc_ext->u.rsp);
     } else {
         virtaddr = mbox->sge_array->addr[0];
         n_rsrc = (struct lpfc_mbx_nembed_rsrc_extent *) virtaddr;
         shdr = &n_rsrc->cfg_shdr;
         *extnt_cnt = bf_get(lpfc_mbx_rsrc_cnt, n_rsrc);
     }
 
     if (bf_get(lpfc_mbox_hdr_status, &shdr->response)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "2984 Failed to read allocated resources "
             "for type %d - Status 0x%x Add'l Status 0x%x.\n",
             type,
             bf_get(lpfc_mbox_hdr_status, &shdr->response),
             bf_get(lpfc_mbox_hdr_add_status, &shdr->response));
         rc = -EIO;
         goto err_exit;
     }
  err_exit:
     lpfc_sli4_mbox_cmd_free(phba, mbox);
     return rc;
 }
 
 /**
  * lpfc_sli4_repost_sgl_list - Repost the buffers sgl pages as block
  * @phba: pointer to lpfc hba data structure.
  * @sgl_list: linked link of sgl buffers to post
  * @cnt: number of linked list buffers
  *
  * This routine walks the list of buffers that have been allocated and
  * repost them to the port by using SGL block post. This is needed after a
  * pci_function_reset/warm_start or start. It attempts to construct blocks
  * of buffer sgls which contains contiguous xris and uses the non-embedded
  * SGL block post mailbox commands to post them to the port. For single
  * buffer sgl with non-contiguous xri, if any, it shall use embedded SGL post
  * mailbox command for posting.
  *
  * Returns: 0 = success, non-zero failure.
  **/
 static int
 lpfc_sli4_repost_sgl_list(struct lpfc_hba *phba,
               struct list_head *sgl_list, int cnt)
 {
     struct lpfc_sglq *sglq_entry = NULL;
     struct lpfc_sglq *sglq_entry_next = NULL;
     struct lpfc_sglq *sglq_entry_first = NULL;
     int status, total_cnt;
     int post_cnt = 0, num_posted = 0, block_cnt = 0;
     int last_xritag = NO_XRI;
     LIST_HEAD(prep_sgl_list);
     LIST_HEAD(blck_sgl_list);
     LIST_HEAD(allc_sgl_list);
     LIST_HEAD(post_sgl_list);
     LIST_HEAD(free_sgl_list);
 
     spin_lock_irq(&phba->hbalock);
     spin_lock(&phba->sli4_hba.sgl_list_lock);
     list_splice_init(sgl_list, &allc_sgl_list);
     spin_unlock(&phba->sli4_hba.sgl_list_lock);
     spin_unlock_irq(&phba->hbalock);
 
     total_cnt = cnt;
     list_for_each_entry_safe(sglq_entry, sglq_entry_next,
                  &allc_sgl_list, list) {
         list_del_init(&sglq_entry->list);
         block_cnt++;
         if ((last_xritag != NO_XRI) &&
             (sglq_entry->sli4_xritag != last_xritag + 1)) {
             /* a hole in xri block, form a sgl posting block */
             list_splice_init(&prep_sgl_list, &blck_sgl_list);
             post_cnt = block_cnt - 1;
             /* prepare list for next posting block */
             list_add_tail(&sglq_entry->list, &prep_sgl_list);
             block_cnt = 1;
         } else {
             /* prepare list for next posting block */
             list_add_tail(&sglq_entry->list, &prep_sgl_list);
             /* enough sgls for non-embed sgl mbox command */
             if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) {
                 list_splice_init(&prep_sgl_list,
                          &blck_sgl_list);
                 post_cnt = block_cnt;
                 block_cnt = 0;
             }
         }
         num_posted++;
 
         /* keep track of last sgl's xritag */
         last_xritag = sglq_entry->sli4_xritag;
 
         /* end of repost sgl list condition for buffers */
         if (num_posted == total_cnt) {
             if (post_cnt == 0) {
                 list_splice_init(&prep_sgl_list,
                          &blck_sgl_list);
                 post_cnt = block_cnt;
             } else if (block_cnt == 1) {
                 status = lpfc_sli4_post_sgl(phba,
                         sglq_entry->phys, 0,
                         sglq_entry->sli4_xritag);
                 if (!status) {
                     /* successful, put sgl to posted list */
                     list_add_tail(&sglq_entry->list,
                               &post_sgl_list);
                 } else {
                     /* Failure, put sgl to free list */
                     lpfc_printf_log(phba, KERN_WARNING,
                         LOG_SLI,
                         "3159 Failed to post "
                         "sgl, xritag:x%x\n",
                         sglq_entry->sli4_xritag);
                     list_add_tail(&sglq_entry->list,
                               &free_sgl_list);
                     total_cnt--;
                 }
             }
         }
 
         /* continue until a nembed page worth of sgls */
         if (post_cnt == 0)
             continue;
 
         /* post the buffer list sgls as a block */
         status = lpfc_sli4_post_sgl_list(phba, &blck_sgl_list,
                          post_cnt);
 
         if (!status) {
             /* success, put sgl list to posted sgl list */
             list_splice_init(&blck_sgl_list, &post_sgl_list);
         } else {
             /* Failure, put sgl list to free sgl list */
             sglq_entry_first = list_first_entry(&blck_sgl_list,
                                 struct lpfc_sglq,
                                 list);
             lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
                     "3160 Failed to post sgl-list, "
                     "xritag:x%x-x%x\n",
                     sglq_entry_first->sli4_xritag,
                     (sglq_entry_first->sli4_xritag +
                      post_cnt - 1));
             list_splice_init(&blck_sgl_list, &free_sgl_list);
             total_cnt -= post_cnt;
         }
 
         /* don't reset xirtag due to hole in xri block */
         if (block_cnt == 0)
             last_xritag = NO_XRI;
 
         /* reset sgl post count for next round of posting */
         post_cnt = 0;
     }
 
     /* free the sgls failed to post */
     lpfc_free_sgl_list(phba, &free_sgl_list);
 
     /* push sgls posted to the available list */
     if (!list_empty(&post_sgl_list)) {
         spin_lock_irq(&phba->hbalock);
         spin_lock(&phba->sli4_hba.sgl_list_lock);
         list_splice_init(&post_sgl_list, sgl_list);
         spin_unlock(&phba->sli4_hba.sgl_list_lock);
         spin_unlock_irq(&phba->hbalock);
     } else {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3161 Failure to post sgl to port.\n");
         return -EIO;
     }
 
     /* return the number of XRIs actually posted */
     return total_cnt;
 }
 
 /**
  * lpfc_sli4_repost_io_sgl_list - Repost all the allocated nvme buffer sgls
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine walks the list of nvme buffers that have been allocated and
  * repost them to the port by using SGL block post. This is needed after a
  * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine
  * is responsible for moving all nvme buffers on the lpfc_abts_nvme_sgl_list
  * to the lpfc_io_buf_list. If the repost fails, reject all nvme buffers.
  *
  * Returns: 0 = success, non-zero failure.
  **/
 static int
 lpfc_sli4_repost_io_sgl_list(struct lpfc_hba *phba)
 {
     LIST_HEAD(post_nblist);
     int num_posted, rc = 0;
 
     /* get all NVME buffers need to repost to a local list */
     lpfc_io_buf_flush(phba, &post_nblist);
 
     /* post the list of nvme buffer sgls to port if available */
     if (!list_empty(&post_nblist)) {
         num_posted = lpfc_sli4_post_io_sgl_list(
             phba, &post_nblist, phba->sli4_hba.io_xri_cnt);
         /* failed to post any nvme buffer, return error */
         if (num_posted == 0)
             rc = -EIO;
     }
     return rc;
 }
 
 static void
 lpfc_set_host_data(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbox)
 {
     uint32_t len;
 
     len = sizeof(struct lpfc_mbx_set_host_data) -
         sizeof(struct lpfc_sli4_cfg_mhdr);
     lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
              LPFC_MBOX_OPCODE_SET_HOST_DATA, len,
              LPFC_SLI4_MBX_EMBED);
 
     mbox->u.mqe.un.set_host_data.param_id = LPFC_SET_HOST_OS_DRIVER_VERSION;
     mbox->u.mqe.un.set_host_data.param_len =
                     LPFC_HOST_OS_DRIVER_VERSION_SIZE;
     snprintf(mbox->u.mqe.un.set_host_data.un.data,
          LPFC_HOST_OS_DRIVER_VERSION_SIZE,
          "Linux %s v"LPFC_DRIVER_VERSION,
          (phba->hba_flag & HBA_FCOE_MODE) ? "FCoE" : "FC");
 }
 
 int
 lpfc_post_rq_buffer(struct lpfc_hba *phba, struct lpfc_queue *hrq,
             struct lpfc_queue *drq, int count, int idx)
 {
     int rc, i;
     struct lpfc_rqe hrqe;
     struct lpfc_rqe drqe;
     struct lpfc_rqb *rqbp;
     unsigned long flags;
     struct rqb_dmabuf *rqb_buffer;
     LIST_HEAD(rqb_buf_list);
 
     rqbp = hrq->rqbp;
     for (i = 0; i < count; i++) {
         spin_lock_irqsave(&phba->hbalock, flags);
         /* IF RQ is already full, don't bother */
         if (rqbp->buffer_count + i >= rqbp->entry_count - 1) {
             spin_unlock_irqrestore(&phba->hbalock, flags);
             break;
         }
         spin_unlock_irqrestore(&phba->hbalock, flags);
 
         rqb_buffer = rqbp->rqb_alloc_buffer(phba);
         if (!rqb_buffer)
             break;
         rqb_buffer->hrq = hrq;
         rqb_buffer->drq = drq;
         rqb_buffer->idx = idx;
         list_add_tail(&rqb_buffer->hbuf.list, &rqb_buf_list);
     }
 
     spin_lock_irqsave(&phba->hbalock, flags);
     while (!list_empty(&rqb_buf_list)) {
         list_remove_head(&rqb_buf_list, rqb_buffer, struct rqb_dmabuf,
                  hbuf.list);
 
         hrqe.address_lo = putPaddrLow(rqb_buffer->hbuf.phys);
         hrqe.address_hi = putPaddrHigh(rqb_buffer->hbuf.phys);
         drqe.address_lo = putPaddrLow(rqb_buffer->dbuf.phys);
         drqe.address_hi = putPaddrHigh(rqb_buffer->dbuf.phys);
         rc = lpfc_sli4_rq_put(hrq, drq, &hrqe, &drqe);
         if (rc < 0) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "6421 Cannot post to HRQ %d: %x %x %x "
                     "DRQ %x %x\n",
                     hrq->queue_id,
                     hrq->host_index,
                     hrq->hba_index,
                     hrq->entry_count,
                     drq->host_index,
                     drq->hba_index);
             rqbp->rqb_free_buffer(phba, rqb_buffer);
         } else {
             list_add_tail(&rqb_buffer->hbuf.list,
                       &rqbp->rqb_buffer_list);
             rqbp->buffer_count++;
         }
     }
     spin_unlock_irqrestore(&phba->hbalock, flags);
     return 1;
 }
 
 static void
 lpfc_mbx_cmpl_cgn_set_ftrs(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 {
     struct lpfc_vport *vport = pmb->vport;
     union lpfc_sli4_cfg_shdr *shdr;
     u32 shdr_status, shdr_add_status;
     u32 sig, acqe;
 
     /* Two outcomes. (1) Set featurs was successul and EDC negotiation
      * is done. (2) Mailbox failed and send FPIN support only.
      */
     shdr = (union lpfc_sli4_cfg_shdr *)
         &pmb->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 (shdr_status || shdr_add_status || pmb->u.mb.mbxStatus) {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_CGN_MGMT,
                 "2516 CGN SET_FEATURE mbox failed with "
                 "status x%x add_status x%x, mbx status x%x "
                 "Reset Congestion to FPINs only\n",
                 shdr_status, shdr_add_status,
                 pmb->u.mb.mbxStatus);
         /* If there is a mbox error, move on to RDF */
         phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
         phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
         goto out;
     }
 
     /* Zero out Congestion Signal ACQE counter */
     phba->cgn_acqe_cnt = 0;
 
     acqe = bf_get(lpfc_mbx_set_feature_CGN_acqe_freq,
               &pmb->u.mqe.un.set_feature);
     sig = bf_get(lpfc_mbx_set_feature_CGN_warn_freq,
              &pmb->u.mqe.un.set_feature);
     lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
             "4620 SET_FEATURES Success: Freq: %ds %dms "
             " Reg: x%x x%x\n", acqe, sig,
             phba->cgn_reg_signal, phba->cgn_reg_fpin);
 out:
     mempool_free(pmb, phba->mbox_mem_pool);
 
     /* Register for FPIN events from the fabric now that the
      * EDC common_set_features has completed.
      */
     lpfc_issue_els_rdf(vport, 0);
 }
 
 int
 lpfc_config_cgn_signal(struct lpfc_hba *phba)
 {
     LPFC_MBOXQ_t *mboxq;
     u32 rc;
 
     mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq)
         goto out_rdf;
 
     lpfc_set_features(phba, mboxq, LPFC_SET_CGN_SIGNAL);
     mboxq->vport = phba->pport;
     mboxq->mbox_cmpl = lpfc_mbx_cmpl_cgn_set_ftrs;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
             "4621 SET_FEATURES: FREQ sig x%x acqe x%x: "
             "Reg: x%x x%x\n",
             phba->cgn_sig_freq, lpfc_acqe_cgn_frequency,
             phba->cgn_reg_signal, phba->cgn_reg_fpin);
 
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED)
         goto out;
     return 0;
 
 out:
     mempool_free(mboxq, phba->mbox_mem_pool);
 out_rdf:
     /* If there is a mbox error, move on to RDF */
     phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
     phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
     lpfc_issue_els_rdf(phba->pport, 0);
     return -EIO;
 }
 
 /**
  * lpfc_init_idle_stat_hb - Initialize idle_stat tracking
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine initializes the per-cq idle_stat to dynamically dictate
  * polling decisions.
  *
  * Return codes:
  *   None
  **/
 static void lpfc_init_idle_stat_hb(struct lpfc_hba *phba)
 {
     int i;
     struct lpfc_sli4_hdw_queue *hdwq;
     struct lpfc_queue *cq;
     struct lpfc_idle_stat *idle_stat;
     u64 wall;
 
     for_each_present_cpu(i) {
         hdwq = &phba->sli4_hba.hdwq[phba->sli4_hba.cpu_map[i].hdwq];
         cq = hdwq->io_cq;
 
         /* Skip if we've already handled this cq's primary CPU */
         if (cq->chann != i)
             continue;
 
         idle_stat = &phba->sli4_hba.idle_stat[i];
 
         idle_stat->prev_idle = get_cpu_idle_time(i, &wall, 1);
         idle_stat->prev_wall = wall;
 
         if (phba->nvmet_support ||
             phba->cmf_active_mode != LPFC_CFG_OFF)
             cq->poll_mode = LPFC_QUEUE_WORK;
         else
             cq->poll_mode = LPFC_IRQ_POLL;
     }
 
     if (!phba->nvmet_support)
         schedule_delayed_work(&phba->idle_stat_delay_work,
                       msecs_to_jiffies(LPFC_IDLE_STAT_DELAY));
 }
 
 static void lpfc_sli4_dip(struct lpfc_hba *phba)
 {
     uint32_t if_type;
 
     if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
     if (if_type == LPFC_SLI_INTF_IF_TYPE_2 ||
         if_type == LPFC_SLI_INTF_IF_TYPE_6) {
         struct lpfc_register reg_data;
 
         if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
                    &reg_data.word0))
             return;
 
         if (bf_get(lpfc_sliport_status_dip, &reg_data))
             lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
                     "2904 Firmware Dump Image Present"
                     " on Adapter");
     }
 }
 
 /**
  * lpfc_cmf_setup - Initialize idle_stat tracking
  * @phba: Pointer to HBA context object.
  *
  * This is called from HBA setup during driver load or when the HBA
  * comes online. this does all the initialization to support CMF and MI.
  **/
 static int
 lpfc_cmf_setup(struct lpfc_hba *phba)
 {
     LPFC_MBOXQ_t *mboxq;
     struct lpfc_dmabuf *mp;
     struct lpfc_pc_sli4_params *sli4_params;
     int rc, cmf, mi_ver;
 
     rc = lpfc_sli4_refresh_params(phba);
     if (unlikely(rc))
         return rc;
 
     mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq)
         return -ENOMEM;
 
     sli4_params = &phba->sli4_hba.pc_sli4_params;
 
     /* Always try to enable MI feature if we can */
     if (sli4_params->mi_ver) {
         lpfc_set_features(phba, mboxq, LPFC_SET_ENABLE_MI);
         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
         mi_ver = bf_get(lpfc_mbx_set_feature_mi,
                  &mboxq->u.mqe.un.set_feature);
 
         if (rc == MBX_SUCCESS) {
             if (mi_ver) {
                 lpfc_printf_log(phba,
                         KERN_WARNING, LOG_CGN_MGMT,
                         "6215 MI is enabled\n");
                 sli4_params->mi_ver = mi_ver;
             } else {
                 lpfc_printf_log(phba,
                         KERN_WARNING, LOG_CGN_MGMT,
                         "6338 MI is disabled\n");
                 sli4_params->mi_ver = 0;
             }
         } else {
             /* mi_ver is already set from GET_SLI4_PARAMETERS */
             lpfc_printf_log(phba, KERN_INFO,
                     LOG_CGN_MGMT | LOG_INIT,
                     "6245 Enable MI Mailbox x%x (x%x/x%x) "
                     "failed, rc:x%x mi:x%x\n",
                     bf_get(lpfc_mqe_command, &mboxq->u.mqe),
                     lpfc_sli_config_mbox_subsys_get
                         (phba, mboxq),
                     lpfc_sli_config_mbox_opcode_get
                         (phba, mboxq),
                     rc, sli4_params->mi_ver);
         }
     } else {
         lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
                 "6217 MI is disabled\n");
     }
 
     /* Ensure FDMI is enabled for MI if enable_mi is set */
     if (sli4_params->mi_ver)
         phba->cfg_fdmi_on = LPFC_FDMI_SUPPORT;
 
     /* Always try to enable CMF feature if we can */
     if (sli4_params->cmf) {
         lpfc_set_features(phba, mboxq, LPFC_SET_ENABLE_CMF);
         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
         cmf = bf_get(lpfc_mbx_set_feature_cmf,
                  &mboxq->u.mqe.un.set_feature);
         if (rc == MBX_SUCCESS && cmf) {
             lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
                     "6218 CMF is enabled: mode %d\n",
                     phba->cmf_active_mode);
         } else {
             lpfc_printf_log(phba, KERN_WARNING,
                     LOG_CGN_MGMT | LOG_INIT,
                     "6219 Enable CMF Mailbox x%x (x%x/x%x) "
                     "failed, rc:x%x dd:x%x\n",
                     bf_get(lpfc_mqe_command, &mboxq->u.mqe),
                     lpfc_sli_config_mbox_subsys_get
                         (phba, mboxq),
                     lpfc_sli_config_mbox_opcode_get
                         (phba, mboxq),
                     rc, cmf);
             sli4_params->cmf = 0;
             phba->cmf_active_mode = LPFC_CFG_OFF;
             goto no_cmf;
         }
 
         /* Allocate Congestion Information Buffer */
         if (!phba->cgn_i) {
             mp = kmalloc(sizeof(*mp), GFP_KERNEL);
             if (mp)
                 mp->virt = dma_alloc_coherent
                         (&phba->pcidev->dev,
                         sizeof(struct lpfc_cgn_info),
                         &mp->phys, GFP_KERNEL);
             if (!mp || !mp->virt) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                         "2640 Failed to alloc memory "
                         "for Congestion Info\n");
                 kfree(mp);
                 sli4_params->cmf = 0;
                 phba->cmf_active_mode = LPFC_CFG_OFF;
                 goto no_cmf;
             }
             phba->cgn_i = mp;
 
             /* initialize congestion buffer info */
             lpfc_init_congestion_buf(phba);
             lpfc_init_congestion_stat(phba);
 
             /* Zero out Congestion Signal counters */
             atomic64_set(&phba->cgn_acqe_stat.alarm, 0);
             atomic64_set(&phba->cgn_acqe_stat.warn, 0);
         }
 
         rc = lpfc_sli4_cgn_params_read(phba);
         if (rc < 0) {
             lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
                     "6242 Error reading Cgn Params (%d)\n",
                     rc);
             /* Ensure CGN Mode is off */
             sli4_params->cmf = 0;
         } else if (!rc) {
             lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
                     "6243 CGN Event empty object.\n");
             /* Ensure CGN Mode is off */
             sli4_params->cmf = 0;
         }
     } else {
 no_cmf:
         lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
                 "6220 CMF is disabled\n");
     }
 
     /* Only register congestion buffer with firmware if BOTH
      * CMF and E2E are enabled.
      */
     if (sli4_params->cmf && sli4_params->mi_ver) {
         rc = lpfc_reg_congestion_buf(phba);
         if (rc) {
             dma_free_coherent(&phba->pcidev->dev,
                       sizeof(struct lpfc_cgn_info),
                       phba->cgn_i->virt, phba->cgn_i->phys);
             kfree(phba->cgn_i);
             phba->cgn_i = NULL;
             /* Ensure CGN Mode is off */
             phba->cmf_active_mode = LPFC_CFG_OFF;
             return 0;
         }
     }
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "6470 Setup MI version %d CMF %d mode %d\n",
             sli4_params->mi_ver, sli4_params->cmf,
             phba->cmf_active_mode);
 
     mempool_free(mboxq, phba->mbox_mem_pool);
 
     /* Initialize atomic counters */
     atomic_set(&phba->cgn_fabric_warn_cnt, 0);
     atomic_set(&phba->cgn_fabric_alarm_cnt, 0);
     atomic_set(&phba->cgn_sync_alarm_cnt, 0);
     atomic_set(&phba->cgn_sync_warn_cnt, 0);
     atomic_set(&phba->cgn_driver_evt_cnt, 0);
     atomic_set(&phba->cgn_latency_evt_cnt, 0);
     atomic64_set(&phba->cgn_latency_evt, 0);
 
     phba->cmf_interval_rate = LPFC_CMF_INTERVAL;
 
     /* Allocate RX Monitor Buffer */
     if (!phba->rxtable) {
         phba->rxtable = kmalloc_array(LPFC_MAX_RXMONITOR_ENTRY,
                           sizeof(struct rxtable_entry),
                           GFP_KERNEL);
         if (!phba->rxtable) {
             lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                     "2644 Failed to alloc memory "
                     "for RX Monitor Buffer\n");
             return -ENOMEM;
         }
     }
     atomic_set(&phba->rxtable_idx_head, 0);
     atomic_set(&phba->rxtable_idx_tail, 0);
     return 0;
 }
 
 static int
 lpfc_set_host_tm(struct lpfc_hba *phba)
 {
     LPFC_MBOXQ_t *mboxq;
     uint32_t len, rc;
     struct timespec64 cur_time;
     struct tm broken;
     uint32_t month, day, year;
     uint32_t hour, minute, second;
     struct lpfc_mbx_set_host_date_time *tm;
 
     mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq)
         return -ENOMEM;
 
     len = sizeof(struct lpfc_mbx_set_host_data) -
         sizeof(struct lpfc_sli4_cfg_mhdr);
     lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
              LPFC_MBOX_OPCODE_SET_HOST_DATA, len,
              LPFC_SLI4_MBX_EMBED);
 
     mboxq->u.mqe.un.set_host_data.param_id = LPFC_SET_HOST_DATE_TIME;
     mboxq->u.mqe.un.set_host_data.param_len =
             sizeof(struct lpfc_mbx_set_host_date_time);
     tm = &mboxq->u.mqe.un.set_host_data.un.tm;
     ktime_get_real_ts64(&cur_time);
     time64_to_tm(cur_time.tv_sec, 0, &broken);
     month = broken.tm_mon + 1;
     day = broken.tm_mday;
     year = broken.tm_year - 100;
     hour = broken.tm_hour;
     minute = broken.tm_min;
     second = broken.tm_sec;
     bf_set(lpfc_mbx_set_host_month, tm, month);
     bf_set(lpfc_mbx_set_host_day, tm, day);
     bf_set(lpfc_mbx_set_host_year, tm, year);
     bf_set(lpfc_mbx_set_host_hour, tm, hour);
     bf_set(lpfc_mbx_set_host_min, tm, minute);
     bf_set(lpfc_mbx_set_host_sec, tm, second);
 
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
     mempool_free(mboxq, phba->mbox_mem_pool);
     return rc;
 }
 
 /**
  * lpfc_sli4_hba_setup - SLI4 device initialization PCI function
  * @phba: Pointer to HBA context object.
  *
  * This function is the main SLI4 device initialization PCI function. This
  * function is called by the HBA initialization 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, i, cnt, len, dd;
     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;
     struct lpfc_rqb *rqbp;
     u32 flg;
 
     /* 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;
         flg = phba->sli.sli_flag;
         spin_unlock_irq(&phba->hbalock);
         /* Allow a little time after setting SLI_ACTIVE for any polled
          * MBX commands to complete via BSG.
          */
         for (i = 0; i < 50 && (flg & LPFC_SLI_MBOX_ACTIVE); i++) {
             msleep(20);
             spin_lock_irq(&phba->hbalock);
             flg = phba->sli.sli_flag;
             spin_unlock_irq(&phba->hbalock);
         }
     }
 
     lpfc_sli4_dip(phba);
 
     /*
      * 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;
 
     /* Issue READ_REV to collect vpd and FW information. */
     vpd_size = SLI4_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)) {
         kfree(vpd);
         goto out_free_mbox;
     }
 
     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_MODE;
         phba->fcp_embed_io = 0; /* SLI4 FC support only */
     } else {
         phba->hba_flag &= ~HBA_FCOE_MODE;
     }
 
     if (bf_get(lpfc_mbx_rd_rev_cee_ver, &mqe->un.read_rev) ==
         LPFC_DCBX_CEE_MODE)
         phba->hba_flag |= HBA_FIP_SUPPORT;
     else
         phba->hba_flag &= ~HBA_FIP_SUPPORT;
 
     phba->hba_flag &= ~HBA_IOQ_FLUSH;
 
     if (phba->sli_rev != LPFC_SLI_REV4) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "0376 READ_REV Error. SLI Level %d "
             "FCoE enabled %d\n",
             phba->sli_rev, phba->hba_flag & HBA_FCOE_MODE);
         rc = -EIO;
         kfree(vpd);
         goto out_free_mbox;
     }
 
     rc = lpfc_set_host_tm(phba);
     lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_INIT,
             "6468 Set host date / time: Status x%x:\n", rc);
 
     /*
      * Continue initialization with default values even if driver failed
      * to read FCoE param config regions, only read parameters if the
      * board is FCoE
      */
     if (phba->hba_flag & HBA_FCOE_MODE &&
         lpfc_sli4_read_fcoe_params(phba))
         lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_INIT,
             "2570 Failed to read FCoE parameters\n");
 
     /*
      * Retrieve sli4 device physical port name, failure of doing it
      * is considered as non-fatal.
      */
     rc = lpfc_sli4_retrieve_pport_name(phba);
     if (!rc)
         lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
                 "3080 Successful retrieving SLI4 device "
                 "physical port name: %s.\n", phba->Port);
 
     rc = lpfc_sli4_get_ctl_attr(phba);
     if (!rc)
         lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
                 "8351 Successful retrieving SLI4 device "
                 "CTL ATTR\n");
 
     /*
      * 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_TRACE_EVENT,
                 "0377 Error %d parsing vpd. "
                 "Using defaults.\n", rc);
         rc = 0;
     }
     kfree(vpd);
 
     /* 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;
 
     /*
      * This is because first G7 ASIC doesn't support the standard
      * 0x5a NVME cmd descriptor type/subtype
      */
     if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
             LPFC_SLI_INTF_IF_TYPE_6) &&
         (phba->vpd.rev.biuRev == LPFC_G7_ASIC_1) &&
         (phba->vpd.rev.smRev == 0) &&
         (phba->cfg_nvme_embed_cmd == 1))
         phba->cfg_nvme_embed_cmd = 0;
 
     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);
 
     if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
         LPFC_SLI_INTF_IF_TYPE_0) {
         lpfc_set_features(phba, mboxq, LPFC_SET_UE_RECOVERY);
         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
         if (rc == MBX_SUCCESS) {
             phba->hba_flag |= HBA_RECOVERABLE_UE;
             /* Set 1Sec interval to detect UE */
             phba->eratt_poll_interval = 1;
             phba->sli4_hba.ue_to_sr = bf_get(
                     lpfc_mbx_set_feature_UESR,
                     &mboxq->u.mqe.un.set_feature);
             phba->sli4_hba.ue_to_rp = bf_get(
                     lpfc_mbx_set_feature_UERP,
                     &mboxq->u.mqe.un.set_feature);
         }
     }
 
     if (phba->cfg_enable_mds_diags && phba->mds_diags_support) {
         /* Enable MDS Diagnostics only if the SLI Port supports it */
         lpfc_set_features(phba, mboxq, LPFC_SET_MDS_DIAGS);
         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
         if (rc != MBX_SUCCESS)
             phba->mds_diags_support = 0;
     }
 
     /*
      * 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_mbox;
     }
 
     /* Disable VMID if app header is not supported */
     if (phba->cfg_vmid_app_header && !(bf_get(lpfc_mbx_rq_ftr_rsp_ashdr,
                           &mqe->un.req_ftrs))) {
         bf_set(lpfc_ftr_ashdr, &phba->sli4_hba.sli4_flags, 0);
         phba->cfg_vmid_app_header = 0;
         lpfc_printf_log(phba, KERN_DEBUG, LOG_SLI,
                 "1242 vmid feature not supported\n");
     }
 
     /*
      * 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++;
     }
 
     /* Performance Hints are ONLY for FCoE */
     if (phba->hba_flag & HBA_FCOE_MODE) {
         if (bf_get(lpfc_mbx_rq_ftr_rsp_perfh, &mqe->un.req_ftrs))
             phba->sli3_options |= LPFC_SLI4_PERFH_ENABLED;
         else
             phba->sli3_options &= ~LPFC_SLI4_PERFH_ENABLED;
     }
 
     /*
      * 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->sli3_options & LPFC_SLI3_BG_ENABLED) {
         if (!(bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs))) {
             phba->cfg_enable_bg = 0;
             phba->sli3_options &= ~LPFC_SLI3_BG_ENABLED;
             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);
 
     /* Always try to enable dual dump feature if we can */
     lpfc_set_features(phba, mboxq, LPFC_SET_DUAL_DUMP);
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
     dd = bf_get(lpfc_mbx_set_feature_dd, &mboxq->u.mqe.un.set_feature);
     if ((rc == MBX_SUCCESS) && (dd == LPFC_ENABLE_DUAL_DUMP))
         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
                 "6448 Dual Dump is enabled\n");
     else
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI | LOG_INIT,
                 "6447 Dual Dump Mailbox x%x (x%x/x%x) failed, "
                 "rc:x%x dd:x%x\n",
                 bf_get(lpfc_mqe_command, &mboxq->u.mqe),
                 lpfc_sli_config_mbox_subsys_get(
                     phba, mboxq),
                 lpfc_sli_config_mbox_opcode_get(
                     phba, mboxq),
                 rc, dd);
     /*
      * Allocate all resources (xri,rpi,vpi,vfi) now.  Subsequent
      * calls depends on these resources to complete port setup.
      */
     rc = lpfc_sli4_alloc_resource_identifiers(phba);
     if (rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2920 Failed to alloc Resource IDs "
                 "rc = x%x\n", rc);
         goto out_free_mbox;
     }
 
     lpfc_set_host_data(phba, mboxq);
 
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
     if (rc) {
         lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
                 "2134 Failed to set host os driver version %x",
                 rc);
     }
 
     /* Read the port's service parameters. */
     rc = lpfc_read_sparam(phba, mboxq, vport->vpi);
     if (rc) {
         phba->link_state = LPFC_HBA_ERROR;
         rc = -ENOMEM;
         goto out_free_mbox;
     }
 
     mboxq->vport = vport;
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
     mp = (struct lpfc_dmabuf *)mboxq->ctx_buf;
     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 but is
      * no longer needed.  It is released and ctx_buf NULLed to prevent
      * unintended pointer access as the mbox is reused.
      */
     lpfc_mbuf_free(phba, mp->virt, mp->phys);
     kfree(mp);
     mboxq->ctx_buf = NULL;
     if (unlikely(rc)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "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_mbox;
     }
 
     lpfc_update_vport_wwn(vport);
 
     /* 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);
 
     /* Create all the SLI4 queues */
     rc = lpfc_sli4_queue_create(phba);
     if (rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3089 Failed to allocate queues\n");
         rc = -ENODEV;
         goto out_free_mbox;
     }
     /* Set up all the queues to the device */
     rc = lpfc_sli4_queue_setup(phba);
     if (unlikely(rc)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0381 Error %d during queue setup.\n ", rc);
         goto out_stop_timers;
     }
     /* Initialize the driver internal SLI layer lists. */
     lpfc_sli4_setup(phba);
     lpfc_sli4_queue_init(phba);
 
     /* update host els xri-sgl sizes and mappings */
     rc = lpfc_sli4_els_sgl_update(phba);
     if (unlikely(rc)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "1400 Failed to update xri-sgl size and "
                 "mapping: %d\n", rc);
         goto out_destroy_queue;
     }
 
     /* register the els sgl pool to the port */
     rc = lpfc_sli4_repost_sgl_list(phba, &phba->sli4_hba.lpfc_els_sgl_list,
                        phba->sli4_hba.els_xri_cnt);
     if (unlikely(rc < 0)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0582 Error %d during els sgl post "
                 "operation\n", rc);
         rc = -ENODEV;
         goto out_destroy_queue;
     }
     phba->sli4_hba.els_xri_cnt = rc;
 
     if (phba->nvmet_support) {
         /* update host nvmet xri-sgl sizes and mappings */
         rc = lpfc_sli4_nvmet_sgl_update(phba);
         if (unlikely(rc)) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "6308 Failed to update nvmet-sgl size "
                     "and mapping: %d\n", rc);
             goto out_destroy_queue;
         }
 
         /* register the nvmet sgl pool to the port */
         rc = lpfc_sli4_repost_sgl_list(
             phba,
             &phba->sli4_hba.lpfc_nvmet_sgl_list,
             phba->sli4_hba.nvmet_xri_cnt);
         if (unlikely(rc < 0)) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "3117 Error %d during nvmet "
                     "sgl post\n", rc);
             rc = -ENODEV;
             goto out_destroy_queue;
         }
         phba->sli4_hba.nvmet_xri_cnt = rc;
 
         /* We allocate an iocbq for every receive context SGL.
          * The additional allocation is for abort and ls handling.
          */
         cnt = phba->sli4_hba.nvmet_xri_cnt +
             phba->sli4_hba.max_cfg_param.max_xri;
     } else {
         /* update host common xri-sgl sizes and mappings */
         rc = lpfc_sli4_io_sgl_update(phba);
         if (unlikely(rc)) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "6082 Failed to update nvme-sgl size "
                     "and mapping: %d\n", rc);
             goto out_destroy_queue;
         }
 
         /* register the allocated common sgl pool to the port */
         rc = lpfc_sli4_repost_io_sgl_list(phba);
         if (unlikely(rc)) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "6116 Error %d during nvme sgl post "
                     "operation\n", rc);
             /* Some NVME buffers were moved to abort nvme list */
             /* A pci function reset will repost them */
             rc = -ENODEV;
             goto out_destroy_queue;
         }
         /* Each lpfc_io_buf job structure has an iocbq element.
          * This cnt provides for abort, els, ct and ls requests.
          */
         cnt = phba->sli4_hba.max_cfg_param.max_xri;
     }
 
     if (!phba->sli.iocbq_lookup) {
         /* Initialize and populate the iocb list per host */
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "2821 initialize iocb list with %d entries\n",
                 cnt);
         rc = lpfc_init_iocb_list(phba, cnt);
         if (rc) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "1413 Failed to init iocb list.\n");
             goto out_destroy_queue;
         }
     }
 
     if (phba->nvmet_support)
         lpfc_nvmet_create_targetport(phba);
 
     if (phba->nvmet_support && phba->cfg_nvmet_mrq) {
         /* Post initial buffers to all RQs created */
         for (i = 0; i < phba->cfg_nvmet_mrq; i++) {
             rqbp = phba->sli4_hba.nvmet_mrq_hdr[i]->rqbp;
             INIT_LIST_HEAD(&rqbp->rqb_buffer_list);
             rqbp->rqb_alloc_buffer = lpfc_sli4_nvmet_alloc;
             rqbp->rqb_free_buffer = lpfc_sli4_nvmet_free;
             rqbp->entry_count = LPFC_NVMET_RQE_DEF_COUNT;
             rqbp->buffer_count = 0;
 
             lpfc_post_rq_buffer(
                 phba, phba->sli4_hba.nvmet_mrq_hdr[i],
                 phba->sli4_hba.nvmet_mrq_data[i],
                 phba->cfg_nvmet_mrq_post, i);
         }
     }
 
     /* 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_TRACE_EVENT,
                 "0393 Error %d during rpi post operation\n",
                 rc);
         rc = -ENODEV;
         goto out_free_iocblist;
     }
     lpfc_sli4_node_prep(phba);
 
     if (!(phba->hba_flag & HBA_FCOE_MODE)) {
         if ((phba->nvmet_support == 0) || (phba->cfg_nvmet_mrq == 1)) {
             /*
              * The FC Port needs to register FCFI (index 0)
              */
             lpfc_reg_fcfi(phba, mboxq);
             mboxq->vport = phba->pport;
             rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
             if (rc != MBX_SUCCESS)
                 goto out_unset_queue;
             rc = 0;
             phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi,
                         &mboxq->u.mqe.un.reg_fcfi);
         } else {
             /* We are a NVME Target mode with MRQ > 1 */
 
             /* First register the FCFI */
             lpfc_reg_fcfi_mrq(phba, mboxq, 0);
             mboxq->vport = phba->pport;
             rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
             if (rc != MBX_SUCCESS)
                 goto out_unset_queue;
             rc = 0;
             phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_mrq_fcfi,
                         &mboxq->u.mqe.un.reg_fcfi_mrq);
 
             /* Next register the MRQs */
             lpfc_reg_fcfi_mrq(phba, mboxq, 1);
             mboxq->vport = phba->pport;
             rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
             if (rc != MBX_SUCCESS)
                 goto out_unset_queue;
             rc = 0;
         }
         /* Check if the port is configured to be disabled */
         lpfc_sli_read_link_ste(phba);
     }
 
     /* Don't post more new bufs if repost already recovered
      * the nvme sgls.
      */
     if (phba->nvmet_support == 0) {
         if (phba->sli4_hba.io_xri_cnt == 0) {
             len = lpfc_new_io_buf(
                           phba, phba->sli4_hba.io_xri_max);
             if (len == 0) {
                 rc = -ENOMEM;
                 goto out_unset_queue;
             }
 
             if (phba->cfg_xri_rebalancing)
                 lpfc_create_multixri_pools(phba);
         }
     } else {
         phba->cfg_xri_rebalancing = 0;
     }
 
     /* 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);
 
     /* Reset HBA FCF states after HBA reset */
     phba->fcf.fcf_flag = 0;
     phba->fcf.current_rec.flag = 0;
 
     /* Start the ELS watchdog timer */
     mod_timer(&vport->els_tmofunc,
           jiffies + msecs_to_jiffies(1000 * (phba->fc_ratov * 2)));
 
     /* Start heart beat timer */
     mod_timer(&phba->hb_tmofunc,
           jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
     phba->hba_flag &= ~(HBA_HBEAT_INP | HBA_HBEAT_TMO);
     phba->last_completion_time = jiffies;
 
     /* start eq_delay heartbeat */
     if (phba->cfg_auto_imax)
         queue_delayed_work(phba->wq, &phba->eq_delay_work,
                    msecs_to_jiffies(LPFC_EQ_DELAY_MSECS));
 
     /* start per phba idle_stat_delay heartbeat */
     lpfc_init_idle_stat_hb(phba);
 
     /* Start error attention (ERATT) polling timer */
     mod_timer(&phba->eratt_poll,
           jiffies + msecs_to_jiffies(1000 * phba->eratt_poll_interval));
 
     /* Enable PCIe device Advanced Error Reporting (AER) if configured */
     if (phba->cfg_aer_support == 1 && !(phba->hba_flag & HBA_AER_ENABLED)) {
         rc = pci_enable_pcie_error_reporting(phba->pcidev);
         if (!rc) {
             lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                     "2829 This device supports "
                     "Advanced Error Reporting (AER)\n");
             spin_lock_irq(&phba->hbalock);
             phba->hba_flag |= HBA_AER_ENABLED;
             spin_unlock_irq(&phba->hbalock);
         } else {
             lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                     "2830 This device does not support "
                     "Advanced Error Reporting (AER)\n");
             phba->cfg_aer_support = 0;
         }
         rc = 0;
     }
 
     /*
      * The port is ready, set the host's link state to LINK_DOWN
      * in preparation for link interrupts.
      */
     spin_lock_irq(&phba->hbalock);
     phba->link_state = LPFC_LINK_DOWN;
 
     /* Check if physical ports are trunked */
     if (bf_get(lpfc_conf_trunk_port0, &phba->sli4_hba))
         phba->trunk_link.link0.state = LPFC_LINK_DOWN;
     if (bf_get(lpfc_conf_trunk_port1, &phba->sli4_hba))
         phba->trunk_link.link1.state = LPFC_LINK_DOWN;
     if (bf_get(lpfc_conf_trunk_port2, &phba->sli4_hba))
         phba->trunk_link.link2.state = LPFC_LINK_DOWN;
     if (bf_get(lpfc_conf_trunk_port3, &phba->sli4_hba))
         phba->trunk_link.link3.state = LPFC_LINK_DOWN;
     spin_unlock_irq(&phba->hbalock);
 
     /* Arm the CQs and then EQs on device */
     lpfc_sli4_arm_cqeq_intr(phba);
 
     /* Indicate device interrupt mode */
     phba->sli4_hba.intr_enable = 1;
 
     /* Setup CMF after HBA is initialized */
     lpfc_cmf_setup(phba);
 
     if (!(phba->hba_flag & HBA_FCOE_MODE) &&
         (phba->hba_flag & LINK_DISABLED)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3103 Adapter Link is disabled.\n");
         lpfc_down_link(phba, mboxq);
         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
         if (rc != MBX_SUCCESS) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "3104 Adapter failed to issue "
                     "DOWN_LINK mbox cmd, rc:x%x\n", rc);
             goto out_io_buff_free;
         }
     } else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {
         /* don't perform init_link on SLI4 FC port loopback test */
         if (!(phba->link_flag & LS_LOOPBACK_MODE)) {
             rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
             if (rc)
                 goto out_io_buff_free;
         }
     }
     mempool_free(mboxq, phba->mbox_mem_pool);
 
     /* Enable RAS FW log support */
     lpfc_sli4_ras_setup(phba);
 
     phba->hba_flag |= HBA_SETUP;
     return rc;
 
 out_io_buff_free:
     /* Free allocated IO Buffers */
     lpfc_io_free(phba);
 out_unset_queue:
     /* Unset all the queues set up in this routine when error out */
     lpfc_sli4_queue_unset(phba);
 out_free_iocblist:
     lpfc_free_iocb_list(phba);
 out_destroy_queue:
     lpfc_sli4_queue_destroy(phba);
 out_stop_timers:
     lpfc_stop_hba_timers(phba);
 out_free_mbox:
     mempool_free(mboxq, phba->mbox_mem_pool);
     return rc;
 }
 
 /**
  * lpfc_mbox_timeout - Timeout call back function for mbox timer
  * @t: Context to fetch pointer to hba structure from.
  *
  * This is the callback function for mailbox timer. The mailbox
  * timer is armed when a new mailbox command is issued and the timer
  * is deleted when the mailbox complete. The function is called by
  * the kernel timer code when a mailbox does not complete within
  * expected time. This function wakes up the worker thread to
  * process the mailbox timeout and returns. All the processing is
  * done by the worker thread function lpfc_mbox_timeout_handler.
  **/
 void
 lpfc_mbox_timeout(struct timer_list *t)
 {
     struct lpfc_hba  *phba = from_timer(phba, t, sli.mbox_tmo);
     unsigned long iflag;
     uint32_t tmo_posted;
 
     spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
     tmo_posted = phba->pport->work_port_events & WORKER_MBOX_TMO;
     if (!tmo_posted)
         phba->pport->work_port_events |= WORKER_MBOX_TMO;
     spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
 
     if (!tmo_posted)
         lpfc_worker_wake_up(phba);
     return;
 }
 
 /**
  * lpfc_sli4_mbox_completions_pending - check to see if any mailbox completions
  *                                    are pending
  * @phba: Pointer to HBA context object.
  *
  * This function checks if any mailbox completions are present on the mailbox
  * completion queue.
  **/
 static bool
 lpfc_sli4_mbox_completions_pending(struct lpfc_hba *phba)
 {
 
     uint32_t idx;
     struct lpfc_queue *mcq;
     struct lpfc_mcqe *mcqe;
     bool pending_completions = false;
     uint8_t qe_valid;
 
     if (unlikely(!phba) || (phba->sli_rev != LPFC_SLI_REV4))
         return false;
 
     /* Check for completions on mailbox completion queue */
 
     mcq = phba->sli4_hba.mbx_cq;
     idx = mcq->hba_index;
     qe_valid = mcq->qe_valid;
     while (bf_get_le32(lpfc_cqe_valid,
            (struct lpfc_cqe *)lpfc_sli4_qe(mcq, idx)) == qe_valid) {
         mcqe = (struct lpfc_mcqe *)(lpfc_sli4_qe(mcq, idx));
         if (bf_get_le32(lpfc_trailer_completed, mcqe) &&
             (!bf_get_le32(lpfc_trailer_async, mcqe))) {
             pending_completions = true;
             break;
         }
         idx = (idx + 1) % mcq->entry_count;
         if (mcq->hba_index == idx)
             break;
 
         /* if the index wrapped around, toggle the valid bit */
         if (phba->sli4_hba.pc_sli4_params.cqav && !idx)
             qe_valid = (qe_valid) ? 0 : 1;
     }
     return pending_completions;
 
 }
 
 /**
  * lpfc_sli4_process_missed_mbox_completions - process mbox completions
  *                        that were missed.
  * @phba: Pointer to HBA context object.
  *
  * For sli4, it is possible to miss an interrupt. As such mbox completions
  * maybe missed causing erroneous mailbox timeouts to occur. This function
  * checks to see if mbox completions are on the mailbox completion queue
  * and will process all the completions associated with the eq for the
  * mailbox completion queue.
  **/
 static bool
 lpfc_sli4_process_missed_mbox_completions(struct lpfc_hba *phba)
 {
     struct lpfc_sli4_hba *sli4_hba = &phba->sli4_hba;
     uint32_t eqidx;
     struct lpfc_queue *fpeq = NULL;
     struct lpfc_queue *eq;
     bool mbox_pending;
 
     if (unlikely(!phba) || (phba->sli_rev != LPFC_SLI_REV4))
         return false;
 
     /* Find the EQ associated with the mbox CQ */
     if (sli4_hba->hdwq) {
         for (eqidx = 0; eqidx < phba->cfg_irq_chann; eqidx++) {
             eq = phba->sli4_hba.hba_eq_hdl[eqidx].eq;
             if (eq && eq->queue_id == sli4_hba->mbx_cq->assoc_qid) {
                 fpeq = eq;
                 break;
             }
         }
     }
     if (!fpeq)
         return false;
 
     /* Turn off interrupts from this EQ */
 
     sli4_hba->sli4_eq_clr_intr(fpeq);
 
     /* Check to see if a mbox completion is pending */
 
     mbox_pending = lpfc_sli4_mbox_completions_pending(phba);
 
     /*
      * If a mbox completion is pending, process all the events on EQ
      * associated with the mbox completion queue (this could include
      * mailbox commands, async events, els commands, receive queue data
      * and fcp commands)
      */
 
     if (mbox_pending)
         /* process and rearm the EQ */
         lpfc_sli4_process_eq(phba, fpeq, LPFC_QUEUE_REARM);
     else
         /* Always clear and re-arm the EQ */
         sli4_hba->sli4_write_eq_db(phba, fpeq, 0, LPFC_QUEUE_REARM);
 
     return mbox_pending;
 
 }
 
 /**
  * lpfc_mbox_timeout_handler - Worker thread function to handle mailbox timeout
  * @phba: Pointer to HBA context object.
  *
  * This function is called from worker thread when a mailbox command times out.
  * The caller is not required to hold any locks. This function will reset the
  * HBA and recover all the pending commands.
  **/
 void
 lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
 {
     LPFC_MBOXQ_t *pmbox = phba->sli.mbox_active;
     MAILBOX_t *mb = NULL;
 
     struct lpfc_sli *psli = &phba->sli;
 
     /* If the mailbox completed, process the completion */
     lpfc_sli4_process_missed_mbox_completions(phba);
 
     if (!(psli->sli_flag & LPFC_SLI_ACTIVE))
         return;
 
     if (pmbox != NULL)
         mb = &pmbox->u.mb;
     /* Check the pmbox pointer first.  There is a race condition
      * between the mbox timeout handler getting executed in the
      * worklist and the mailbox actually completing. When this
      * race condition occurs, the mbox_active will be NULL.
      */
     spin_lock_irq(&phba->hbalock);
     if (pmbox == NULL) {
         lpfc_printf_log(phba, KERN_WARNING,
                 LOG_MBOX | LOG_SLI,
                 "0353 Active Mailbox cleared - mailbox timeout "
                 "exiting\n");
         spin_unlock_irq(&phba->hbalock);
         return;
     }
 
     /* Mbox cmd <mbxCommand> timeout */
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "0310 Mailbox command x%x timeout Data: x%x x%x x%px\n",
             mb->mbxCommand,
             phba->pport->port_state,
             phba->sli.sli_flag,
             phba->sli.mbox_active);
     spin_unlock_irq(&phba->hbalock);
 
     /* Setting state unknown so lpfc_sli_abort_iocb_ring
      * would get IOCB_ERROR from lpfc_sli_issue_iocb, allowing
      * it to fail all outstanding SCSI IO.
      */
     spin_lock_irq(&phba->pport->work_port_lock);
     phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
     spin_unlock_irq(&phba->pport->work_port_lock);
     spin_lock_irq(&phba->hbalock);
     phba->link_state = LPFC_LINK_UNKNOWN;
     psli->sli_flag &= ~LPFC_SLI_ACTIVE;
     spin_unlock_irq(&phba->hbalock);
 
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "0345 Resetting board due to mailbox timeout\n");
 
     /* Reset the HBA device */
     lpfc_reset_hba(phba);
 }
 
 /**
  * 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 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.
  * If the mailbox is submitted in no_wait mode (not polling) the
  * function will submit the command and returns immediately without waiting
  * for the mailbox completion. The no_wait is supported only when HBA
  * is in SLI2/SLI3 mode - interrupts are enabled.
  * The SLI interface allows only one mailbox pending at a time. If the
  * mailbox is issued in polling mode and there is already a mailbox
  * pending, then the function will return an error. If the mailbox is issued
  * in NO_WAIT mode and there is a mailbox pending already, the function
  * will return MBX_BUSY after queuing the mailbox into mailbox queue.
  * The sli layer owns the mailbox object until the completion of mailbox
  * command if this function return MBX_BUSY or MBX_SUCCESS. For all other
  * return codes the caller owns the mailbox command after the return of
  * the function.
  **/
 static int
 lpfc_sli_issue_mbox_s3(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox,
                uint32_t flag)
 {
     MAILBOX_t *mbx;
     struct lpfc_sli *psli = &phba->sli;
     uint32_t status, evtctr;
     uint32_t ha_copy, hc_copy;
     int i;
     unsigned long timeout;
     unsigned long drvr_flag = 0;
     uint32_t word0, ldata;
     void __iomem *to_slim;
     int processing_queue = 0;
 
     spin_lock_irqsave(&phba->hbalock, drvr_flag);
     if (!pmbox) {
         phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
         /* 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;
         pmbox = lpfc_mbox_get(phba);
         if (!pmbox) {
             spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
             return MBX_SUCCESS;
         }
     }
 
     if (pmbox->mbox_cmpl && pmbox->mbox_cmpl != lpfc_sli_def_mbox_cmpl &&
         pmbox->mbox_cmpl != lpfc_sli_wake_mbox_wait) {
         if(!pmbox->vport) {
             spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
             lpfc_printf_log(phba, KERN_ERR,
                     LOG_MBOX | LOG_VPORT,
                     "1806 Mbox x%x failed. No vport\n",
                     pmbox->u.mb.mbxCommand);
             dump_stack();
             goto out_not_finished;
         }
     }
 
     /* If the PCI channel is in offline state, do not post mbox. */
     if (unlikely(pci_channel_offline(phba->pcidev))) {
         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
         goto out_not_finished;
     }
 
     /* If HBA has a deferred error attention, fail the iocb. */
     if (unlikely(phba->hba_flag & DEFER_ERATT)) {
         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
         goto out_not_finished;
     }
 
     psli = &phba->sli;
 
     mbx = &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 */
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "(%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 (mbx->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT) {
         if (lpfc_readl(phba->HCregaddr, &hc_copy) ||
             !(hc_copy & HC_MBINT_ENA)) {
             spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "(%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;
         }
     }
 
     if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
         /* Polling for a mbox command when another one is already active
          * is not allowed in SLI. Also, the driver must have established
          * SLI2 mode to queue and process multiple mbox commands.
          */
 
         if (flag & MBX_POLL) {
             spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
 
             /* Mbox command <mbxCommand> cannot issue */
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "(%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_SLI_ACTIVE)) {
             spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
             /* Mbox command <mbxCommand> cannot issue */
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "(%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;
         }
 
         /* Another mailbox command is still being processed, queue this
          * command to be processed later.
          */
         lpfc_mbox_put(phba, pmbox);
 
         /* Mbox cmd issue - BUSY */
         lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
                 "(%d):0308 Mbox cmd issue - BUSY Data: "
                 "x%x x%x x%x x%x\n",
                 pmbox->vport ? pmbox->vport->vpi : 0xffffff,
                 mbx->mbxCommand,
                 phba->pport ? phba->pport->port_state : 0xff,
                 psli->sli_flag, flag);
 
         psli->slistat.mbox_busy++;
         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
 
         if (pmbox->vport) {
             lpfc_debugfs_disc_trc(pmbox->vport,
                 LPFC_DISC_TRC_MBOX_VPORT,
                 "MBOX Bsy vport:  cmd:x%x mb:x%x x%x",
                 (uint32_t)mbx->mbxCommand,
                 mbx->un.varWords[0], mbx->un.varWords[1]);
         }
         else {
             lpfc_debugfs_disc_trc(phba->pport,
                 LPFC_DISC_TRC_MBOX,
                 "MBOX Bsy:        cmd:x%x mb:x%x x%x",
                 (uint32_t)mbx->mbxCommand,
                 mbx->un.varWords[0], mbx->un.varWords[1]);
         }
 
         return MBX_BUSY;
     }
 
     psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
 
     /* If we are not polling, we MUST be in SLI2 mode */
     if (flag != MBX_POLL) {
         if (!(psli->sli_flag & LPFC_SLI_ACTIVE) &&
             (mbx->mbxCommand != MBX_KILL_BOARD)) {
             psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
             spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
             /* Mbox command <mbxCommand> cannot issue */
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "(%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 */
         timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, pmbox) *
                        1000);
         mod_timer(&psli->mbox_tmo, jiffies + timeout);
     }
 
     /* Mailbox cmd <cmd> issue */
     lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
             "(%d):0309 Mailbox cmd x%x issue Data: x%x x%x "
             "x%x\n",
             pmbox->vport ? pmbox->vport->vpi : 0,
             mbx->mbxCommand,
             phba->pport ? phba->pport->port_state : 0xff,
             psli->sli_flag, flag);
 
     if (mbx->mbxCommand != MBX_HEARTBEAT) {
         if (pmbox->vport) {
             lpfc_debugfs_disc_trc(pmbox->vport,
                 LPFC_DISC_TRC_MBOX_VPORT,
                 "MBOX Send vport: cmd:x%x mb:x%x x%x",
                 (uint32_t)mbx->mbxCommand,
                 mbx->un.varWords[0], mbx->un.varWords[1]);
         }
         else {
             lpfc_debugfs_disc_trc(phba->pport,
                 LPFC_DISC_TRC_MBOX,
                 "MBOX Send:       cmd:x%x mb:x%x x%x",
                 (uint32_t)mbx->mbxCommand,
                 mbx->un.varWords[0], mbx->un.varWords[1]);
         }
     }
 
     psli->slistat.mbox_cmd++;
     evtctr = psli->slistat.mbox_event;
 
     /* next set own bit for the adapter and copy over command word */
     mbx->mbxOwner = OWN_CHIP;
 
     if (psli->sli_flag & LPFC_SLI_ACTIVE) {
         /* Populate mbox extension offset word. */
         if (pmbox->in_ext_byte_len || pmbox->out_ext_byte_len) {
             *(((uint32_t *)mbx) + pmbox->mbox_offset_word)
                 = (uint8_t *)phba->mbox_ext
                   - (uint8_t *)phba->mbox;
         }
 
         /* Copy the mailbox extension data */
         if (pmbox->in_ext_byte_len && pmbox->ctx_buf) {
             lpfc_sli_pcimem_bcopy(pmbox->ctx_buf,
                           (uint8_t *)phba->mbox_ext,
                           pmbox->in_ext_byte_len);
         }
         /* Copy command data to host SLIM area */
         lpfc_sli_pcimem_bcopy(mbx, phba->mbox, MAILBOX_CMD_SIZE);
     } else {
         /* Populate mbox extension offset word. */
         if (pmbox->in_ext_byte_len || pmbox->out_ext_byte_len)
             *(((uint32_t *)mbx) + pmbox->mbox_offset_word)
                 = MAILBOX_HBA_EXT_OFFSET;
 
         /* Copy the mailbox extension data */
         if (pmbox->in_ext_byte_len && pmbox->ctx_buf)
             lpfc_memcpy_to_slim(phba->MBslimaddr +
                 MAILBOX_HBA_EXT_OFFSET,
                 pmbox->ctx_buf, pmbox->in_ext_byte_len);
 
         if (mbx->mbxCommand == MBX_CONFIG_PORT)
             /* copy command data into host mbox for cmpl */
             lpfc_sli_pcimem_bcopy(mbx, phba->mbox,
                           MAILBOX_CMD_SIZE);
 
         /* First copy mbox command data to HBA SLIM, skip past first
            word */
         to_slim = phba->MBslimaddr + sizeof (uint32_t);
         lpfc_memcpy_to_slim(to_slim, &mbx->un.varWords[0],
                 MAILBOX_CMD_SIZE - sizeof (uint32_t));
 
         /* Next copy over first word, with mbxOwner set */
         ldata = *((uint32_t *)mbx);
         to_slim = phba->MBslimaddr;
         writel(ldata, to_slim);
         readl(to_slim); /* flush */
 
         if (mbx->mbxCommand == MBX_CONFIG_PORT)
             /* switch over to host mailbox */
             psli->sli_flag |= LPFC_SLI_ACTIVE;
     }
 
     wmb();
 
     switch (flag) {
     case MBX_NOWAIT:
         /* Set up reference to mailbox command */
         psli->mbox_active = pmbox;
         /* Interrupt board to do it */
         writel(CA_MBATT, phba->CAregaddr);
         readl(phba->CAregaddr); /* flush */
         /* Don't wait for it to finish, just return */
         break;
 
     case MBX_POLL:
         /* Set up null reference to mailbox command */
         psli->mbox_active = NULL;
         /* Interrupt board to do it */
         writel(CA_MBATT, phba->CAregaddr);
         readl(phba->CAregaddr); /* flush */
 
         if (psli->sli_flag & LPFC_SLI_ACTIVE) {
             /* First read mbox status word */
             word0 = *((uint32_t *)phba->mbox);
             word0 = le32_to_cpu(word0);
         } else {
             /* First read mbox status word */
             if (lpfc_readl(phba->MBslimaddr, &word0)) {
                 spin_unlock_irqrestore(&phba->hbalock,
                                drvr_flag);
                 goto out_not_finished;
             }
         }
 
         /* Read the HBA Host Attention Register */
         if (lpfc_readl(phba->HAregaddr, &ha_copy)) {
             spin_unlock_irqrestore(&phba->hbalock,
                                drvr_flag);
             goto out_not_finished;
         }
         timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, pmbox) *
                             1000) + jiffies;
         i = 0;
         /* Wait for command to complete */
         while (((word0 & OWN_CHIP) == OWN_CHIP) ||
                (!(ha_copy & HA_MBATT) &&
             (phba->link_state > LPFC_WARM_START))) {
             if (time_after(jiffies, timeout)) {
                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
                 spin_unlock_irqrestore(&phba->hbalock,
                                drvr_flag);
                 goto out_not_finished;
             }
 
             /* Check if we took a mbox interrupt while we were
                polling */
             if (((word0 & OWN_CHIP) != OWN_CHIP)
                 && (evtctr != psli->slistat.mbox_event))
                 break;
 
             if (i++ > 10) {
                 spin_unlock_irqrestore(&phba->hbalock,
                                drvr_flag);
                 msleep(1);
                 spin_lock_irqsave(&phba->hbalock, drvr_flag);
             }
 
             if (psli->sli_flag & LPFC_SLI_ACTIVE) {
                 /* First copy command data */
                 word0 = *((uint32_t *)phba->mbox);
                 word0 = le32_to_cpu(word0);
                 if (mbx->mbxCommand == MBX_CONFIG_PORT) {
                     MAILBOX_t *slimmb;
                     uint32_t slimword0;
                     /* Check real SLIM for any errors */
                     slimword0 = readl(phba->MBslimaddr);
                     slimmb = (MAILBOX_t *) & slimword0;
                     if (((slimword0 & OWN_CHIP) != OWN_CHIP)
                         && slimmb->mbxStatus) {
                         psli->sli_flag &=
                             ~LPFC_SLI_ACTIVE;
                         word0 = slimword0;
                     }
                 }
             } else {
                 /* First copy command data */
                 word0 = readl(phba->MBslimaddr);
             }
             /* Read the HBA Host Attention Register */
             if (lpfc_readl(phba->HAregaddr, &ha_copy)) {
                 spin_unlock_irqrestore(&phba->hbalock,
                                drvr_flag);
                 goto out_not_finished;
             }
         }
 
         if (psli->sli_flag & LPFC_SLI_ACTIVE) {
             /* copy results back to user */
             lpfc_sli_pcimem_bcopy(phba->mbox, mbx,
                         MAILBOX_CMD_SIZE);
             /* Copy the mailbox extension data */
             if (pmbox->out_ext_byte_len && pmbox->ctx_buf) {
                 lpfc_sli_pcimem_bcopy(phba->mbox_ext,
                               pmbox->ctx_buf,
                               pmbox->out_ext_byte_len);
             }
         } else {
             /* First copy command data */
             lpfc_memcpy_from_slim(mbx, phba->MBslimaddr,
                         MAILBOX_CMD_SIZE);
             /* Copy the mailbox extension data */
             if (pmbox->out_ext_byte_len && pmbox->ctx_buf) {
                 lpfc_memcpy_from_slim(
                     pmbox->ctx_buf,
                     phba->MBslimaddr +
                     MAILBOX_HBA_EXT_OFFSET,
                     pmbox->out_ext_byte_len);
             }
         }
 
         writel(HA_MBATT, phba->HAregaddr);
         readl(phba->HAregaddr); /* flush */
 
         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
         status = mbx->mbxStatus;
     }
 
     spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
     return status;
 
 out_not_finished:
     if (processing_queue) {
         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;
     LPFC_MBOXQ_t *mboxq;
     int rc = 0;
     unsigned long timeout = 0;
     u32 sli_flag;
     u8 cmd, subsys, opcode;
 
     /* Mark the asynchronous mailbox command posting as blocked */
     spin_lock_irq(&phba->hbalock);
     psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
     /* Determine how long we might wait for the active mailbox
      * command to be gracefully completed by firmware.
      */
     if (phba->sli.mbox_active)
         timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
                         phba->sli.mbox_active) *
                         1000) + jiffies;
     spin_unlock_irq(&phba->hbalock);
 
     /* Make sure the mailbox is really active */
     if (timeout)
         lpfc_sli4_process_missed_mbox_completions(phba);
 
     /* Wait for the outstanding mailbox command to complete */
     while (phba->sli.mbox_active) {
         /* Check active mailbox complete status every 2ms */
         msleep(2);
         if (time_after(jiffies, timeout)) {
             /* Timeout, mark the outstanding cmd not complete */
 
             /* Sanity check sli.mbox_active has not completed or
              * cancelled from another context during last 2ms sleep,
              * so take hbalock to be sure before logging.
              */
             spin_lock_irq(&phba->hbalock);
             if (phba->sli.mbox_active) {
                 mboxq = phba->sli.mbox_active;
                 cmd = mboxq->u.mb.mbxCommand;
                 subsys = lpfc_sli_config_mbox_subsys_get(phba,
                                      mboxq);
                 opcode = lpfc_sli_config_mbox_opcode_get(phba,
                                      mboxq);
                 sli_flag = psli->sli_flag;
                 spin_unlock_irq(&phba->hbalock);
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "2352 Mailbox command x%x "
                         "(x%x/x%x) sli_flag x%x could "
                         "not complete\n",
                         cmd, subsys, opcode,
                         sli_flag);
             } else {
                 spin_unlock_irq(&phba->hbalock);
             }
 
             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 asynchronous mailbox command */
     lpfc_worker_wake_up(phba);
 }
 
 /**
  * lpfc_sli4_wait_bmbx_ready - Wait for bootstrap mailbox register ready
  * @phba: Pointer to HBA context object.
  * @mboxq: Pointer to mailbox object.
  *
  * The function waits for the bootstrap mailbox register ready bit from
  * port for twice the regular mailbox command timeout value.
  *
  *      0 - no timeout on waiting for bootstrap mailbox register ready.
  *      MBXERR_ERROR - wait for bootstrap mailbox register timed out.
  **/
 static int
 lpfc_sli4_wait_bmbx_ready(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 {
     uint32_t db_ready;
     unsigned long timeout;
     struct lpfc_register bmbx_reg;
 
     timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, mboxq)
                    * 1000) + jiffies;
 
     do {
         bmbx_reg.word0 = readl(phba->sli4_hba.BMBXregaddr);
         db_ready = bf_get(lpfc_bmbx_rdy, &bmbx_reg);
         if (!db_ready)
             mdelay(2);
 
         if (time_after(jiffies, timeout))
             return MBXERR_ERROR;
     } while (!db_ready);
 
     return 0;
 }
 
 /**
  * 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 mcqe_status;
     uint32_t mbx_cmnd;
     struct lpfc_sli *psli = &phba->sli;
     struct lpfc_mqe *mb = &mboxq->u.mqe;
     struct lpfc_bmbx_create *mbox_rgn;
     struct dma_address *dma_address;
 
     /*
      * 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_TRACE_EVENT,
                 "(%d):2532 Mailbox command x%x (x%x/x%x) "
                 "cannot issue Data: x%x x%x\n",
                 mboxq->vport ? mboxq->vport->vpi : 0,
                 mboxq->u.mb.mbxCommand,
                 lpfc_sli_config_mbox_subsys_get(phba, mboxq),
                 lpfc_sli_config_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);
 
     /* wait for bootstrap mbox register for readyness */
     rc = lpfc_sli4_wait_bmbx_ready(phba, mboxq);
     if (rc)
         goto exit;
     /*
      * 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_sli4_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);
 
     /* wait for bootstrap mbox register for hi-address write done */
     rc = lpfc_sli4_wait_bmbx_ready(phba, mboxq);
     if (rc)
         goto exit;
 
     /* Post the low mailbox dma address to the port. */
     writel(dma_address->addr_lo, phba->sli4_hba.BMBXregaddr);
 
     /* wait for bootstrap mbox register for low address write done */
     rc = lpfc_sli4_wait_bmbx_ready(phba, mboxq);
     if (rc)
         goto exit;
 
     /*
      * 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_sli4_pcimem_bcopy(phba->sli4_hba.bmbx.avirt, mb,
                    sizeof(struct lpfc_mqe));
     mbox_rgn = (struct lpfc_bmbx_create *) phba->sli4_hba.bmbx.avirt;
     lpfc_sli4_pcimem_bcopy(&mbox_rgn->mcqe, &mboxq->mcqe,
                    sizeof(struct lpfc_mcqe));
     mcqe_status = bf_get(lpfc_mcqe_status, &mbox_rgn->mcqe);
     /*
      * When the CQE status indicates a failure and the mailbox status
      * indicates success then copy the CQE status into the mailbox status
      * (and prefix it with x4000).
      */
     if (mcqe_status != MB_CQE_STATUS_SUCCESS) {
         if (bf_get(lpfc_mqe_status, mb) == MBX_SUCCESS)
             bf_set(lpfc_mqe_status, mb,
                    (LPFC_MBX_ERROR_RANGE | mcqe_status));
         rc = MBXERR_ERROR;
     } else
         lpfc_sli4_swap_str(phba, mboxq);
 
     lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
             "(%d):0356 Mailbox cmd x%x (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_sli_config_mbox_subsys_get(phba, mboxq),
             lpfc_sli_config_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.
  * @mboxq: 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;
 
     /* dump from issue mailbox command if setup */
     lpfc_idiag_mbxacc_dump_issue_mbox(phba, &mboxq->u.mb);
 
     rc = lpfc_mbox_dev_check(phba);
     if (unlikely(rc)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "(%d):2544 Mailbox command x%x (x%x/x%x) "
                 "cannot issue Data: x%x x%x\n",
                 mboxq->vport ? mboxq->vport->vpi : 0,
                 mboxq->u.mb.mbxCommand,
                 lpfc_sli_config_mbox_subsys_get(phba, mboxq),
                 lpfc_sli_config_mbox_opcode_get(phba, mboxq),
                 psli->sli_flag, flag);
         goto out_not_finished;
     }
 
     /* 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_WARNING, LOG_MBOX | LOG_SLI,
                     "(%d):2541 Mailbox command x%x "
                     "(x%x/x%x) failure: "
                     "mqe_sta: x%x mcqe_sta: x%x/x%x "
                     "Data: x%x x%x\n",
                     mboxq->vport ? mboxq->vport->vpi : 0,
                     mboxq->u.mb.mbxCommand,
                     lpfc_sli_config_mbox_subsys_get(phba,
                                     mboxq),
                     lpfc_sli_config_mbox_opcode_get(phba,
                                     mboxq),
                     bf_get(lpfc_mqe_status, &mboxq->u.mqe),
                     bf_get(lpfc_mcqe_status, &mboxq->mcqe),
                     bf_get(lpfc_mcqe_ext_status,
                            &mboxq->mcqe),
                     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/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_sli_config_mbox_subsys_get(phba, mboxq),
                 lpfc_sli_config_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_WARNING,
                     LOG_MBOX | LOG_SLI,
                     "(%d):2597 Sync Mailbox command "
                     "x%x (x%x/x%x) failure: "
                     "mqe_sta: x%x mcqe_sta: x%x/x%x "
                     "Data: x%x x%x\n",
                     mboxq->vport ? mboxq->vport->vpi : 0,
                     mboxq->u.mb.mbxCommand,
                     lpfc_sli_config_mbox_subsys_get(phba,
                                     mboxq),
                     lpfc_sli_config_mbox_opcode_get(phba,
                                     mboxq),
                     bf_get(lpfc_mqe_status, &mboxq->u.mqe),
                     bf_get(lpfc_mcqe_status, &mboxq->mcqe),
                     bf_get(lpfc_mcqe_ext_status,
                            &mboxq->mcqe),
                     psli->sli_flag, flag);
             /* Unblock the async mailbox posting afterward */
             lpfc_sli4_async_mbox_unblock(phba);
         }
         return rc;
     }
 
     /* Now, interrupt mode asynchronous mailbox command */
     rc = lpfc_mbox_cmd_check(phba, mboxq);
     if (rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "(%d):2543 Mailbox command x%x (x%x/x%x) "
                 "cannot issue Data: x%x x%x\n",
                 mboxq->vport ? mboxq->vport->vpi : 0,
                 mboxq->u.mb.mbxCommand,
                 lpfc_sli_config_mbox_subsys_get(phba, mboxq),
                 lpfc_sli_config_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 x%x\n",
             mboxq->vport ? mboxq->vport->vpi : 0xffffff,
             bf_get(lpfc_mqe_command, &mboxq->u.mqe),
             lpfc_sli_config_mbox_subsys_get(phba, mboxq),
             lpfc_sli_config_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_TRACE_EVENT,
                 "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 +
           msecs_to_jiffies(1000 * lpfc_mbox_tmo_val(phba, mboxq))));
 
     lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
             "(%d):0355 Mailbox cmd x%x (x%x/x%x) issue Data: "
             "x%x x%x\n",
             mboxq->vport ? mboxq->vport->vpi : 0, mbx_cmnd,
             lpfc_sli_config_mbox_subsys_get(phba, mboxq),
             lpfc_sli_config_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_TRACE_EVENT,
                 "(%d):2533 Mailbox command x%x (x%x/x%x) "
                 "cannot issue Data: x%x x%x\n",
                 mboxq->vport ? mboxq->vport->vpi : 0,
                 mboxq->u.mb.mbxCommand,
                 lpfc_sli_config_mbox_subsys_get(phba, mboxq),
                 lpfc_sli_config_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);
     if (phba->sli.mbox_active) {
         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 function 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;
     }
     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.
  * @piocb: Pointer to address of newly added command iocb.
  *
  * This function is called with hbalock held for SLI3 ports or
  * the ring lock held for SLI4 ports to add a command
  * iocb to the txq when SLI layer cannot submit the command iocb
  * to the ring.
  **/
 void
 __lpfc_sli_ringtx_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
             struct lpfc_iocbq *piocb)
 {
     if (phba->sli_rev == LPFC_SLI_REV4)
         lockdep_assert_held(&pring->ring_lock);
     else
         lockdep_assert_held(&phba->hbalock);
     /* Insert the caller's iocb in the txq tail for later processing. */
     list_add_tail(&piocb->list, &pring->txq);
 }
 
 /**
  * lpfc_sli_next_iocb - Get the next iocb in the txq
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  * @piocb: Pointer to address of newly added command iocb.
  *
  * This function is called with hbalock held before a new
  * iocb is submitted to the firmware. This function checks
  * txq to flush the iocbs in txq to Firmware before
  * submitting new iocbs to the Firmware.
  * If there are iocbs in the txq which need to be submitted
  * to firmware, lpfc_sli_next_iocb returns the first element
  * of the txq after dequeuing it from txq.
  * If there is no iocb in the txq then the function will return
  * *piocb and *piocb is set to NULL. Caller needs to check
  * *piocb to find if there are more commands in the txq.
  **/
 static struct lpfc_iocbq *
 lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
            struct lpfc_iocbq **piocb)
 {
     struct lpfc_iocbq * nextiocb;
 
     lockdep_assert_held(&phba->hbalock);
 
     nextiocb = lpfc_sli_ringtx_get(phba, pring);
     if (!nextiocb) {
         nextiocb = *piocb;
         *piocb = NULL;
     }
 
     return nextiocb;
 }
 
 /**
  * __lpfc_sli_issue_iocb_s3 - SLI3 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_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_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.sli3_ring[ring_number];
 
     lockdep_assert_held(&phba->hbalock);
 
     if (piocb->cmd_cmpl && (!piocb->vport) &&
        (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
        (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "1807 IOCB x%x failed. No vport\n",
                 piocb->iocb.ulpCommand);
         dump_stack();
         return IOCB_ERROR;
     }
 
 
     /* If the PCI channel is in offline state, do not post iocbs. */
     if (unlikely(pci_channel_offline(phba->pcidev)))
         return IOCB_ERROR;
 
     /* If HBA has a deferred error attention, fail the iocb. */
     if (unlikely(phba->hba_flag & DEFER_ERATT))
         return IOCB_ERROR;
 
     /*
      * We should never get an IOCB if we are in a < LINK_DOWN state
      */
     if (unlikely(phba->link_state < LPFC_LINK_DOWN))
         return IOCB_ERROR;
 
     /*
      * Check to see if we are blocking IOCB processing because of a
      * outstanding event.
      */
     if (unlikely(pring->flag & LPFC_STOP_IOCB_EVENT))
         goto iocb_busy;
 
     if (unlikely(phba->link_state == LPFC_LINK_DOWN)) {
         /*
          * Only CREATE_XRI, CLOSE_XRI, and QUE_RING_BUF
          * can be issued if the link is not up.
          */
         switch (piocb->iocb.ulpCommand) {
         case CMD_QUE_RING_BUF_CN:
         case CMD_QUE_RING_BUF64_CN:
             /*
              * For IOCBs, like QUE_RING_BUF, that have no rsp ring
              * completion, cmd_cmpl MUST be 0.
              */
             if (piocb->cmd_cmpl)
                 piocb->cmd_cmpl = NULL;
             fallthrough;
         case CMD_CREATE_XRI_CR:
         case CMD_CLOSE_XRI_CN:
         case CMD_CLOSE_XRI_CX:
             break;
         default:
             goto iocb_busy;
         }
 
     /*
      * For FCP commands, we must be in a state where we can process link
      * attention events.
      */
     } else if (unlikely(pring->ringno == LPFC_FCP_RING &&
                 !(phba->sli.sli_flag & LPFC_PROCESS_LA))) {
         goto iocb_busy;
     }
 
     while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
            (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
         lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
 
     if (iocb)
         lpfc_sli_update_ring(phba, pring);
     else
         lpfc_sli_update_full_ring(phba, pring);
 
     if (!piocb)
         return IOCB_SUCCESS;
 
     goto out_busy;
 
  iocb_busy:
     pring->stats.iocb_cmd_delay++;
 
  out_busy:
 
     if (!(flag & SLI_IOCB_RET_IOCB)) {
         __lpfc_sli_ringtx_put(phba, pring, piocb);
         return IOCB_SUCCESS;
     }
 
     return IOCB_BUSY;
 }
 
 /**
  * __lpfc_sli_issue_fcp_io_s3 - SLI3 device for sending fcp io iocb
  * @phba: Pointer to HBA context object.
  * @ring_number: SLI ring number to issue wqe on.
  * @piocb: Pointer to command iocb.
  * @flag: Flag indicating if this command can be put into txq.
  *
  * __lpfc_sli_issue_fcp_io_s3 is wrapper function to invoke lockless func to
  * send  an iocb command to an HBA with SLI-3 interface spec.
  *
  * This function takes the hbalock before invoking the lockless version.
  * The function will return success after it successfully submit the wqe to
  * firmware or after adding to the txq.
  **/
 static int
 __lpfc_sli_issue_fcp_io_s3(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_s3(phba, ring_number, piocb, flag);
     spin_unlock_irqrestore(&phba->hbalock, iflags);
 
     return rc;
 }
 
 /**
  * __lpfc_sli_issue_fcp_io_s4 - SLI4 device for sending fcp io wqe
  * @phba: Pointer to HBA context object.
  * @ring_number: SLI ring number to issue wqe on.
  * @piocb: Pointer to command iocb.
  * @flag: Flag indicating if this command can be put into txq.
  *
  * __lpfc_sli_issue_fcp_io_s4 is used by other functions in the driver to issue
  * an wqe command to an HBA with SLI-4 interface spec.
  *
  * This function is a lockless version. The function will return success
  * after it successfully submit the wqe to firmware or after adding to the
  * txq.
  **/
 static int
 __lpfc_sli_issue_fcp_io_s4(struct lpfc_hba *phba, uint32_t ring_number,
                struct lpfc_iocbq *piocb, uint32_t flag)
 {
     int rc;
     struct lpfc_io_buf *lpfc_cmd = piocb->io_buf;
 
     lpfc_prep_embed_io(phba, lpfc_cmd);
     rc = lpfc_sli4_issue_wqe(phba, lpfc_cmd->hdwq, piocb);
     return rc;
 }
 
 void
 lpfc_prep_embed_io(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
 {
     struct lpfc_iocbq *piocb = &lpfc_cmd->cur_iocbq;
     union lpfc_wqe128 *wqe = &lpfc_cmd->cur_iocbq.wqe;
     struct sli4_sge *sgl;
 
     /* 128 byte wqe support here */
     sgl = (struct sli4_sge *)lpfc_cmd->dma_sgl;
 
     if (phba->fcp_embed_io) {
         struct fcp_cmnd *fcp_cmnd;
         u32 *ptr;
 
         fcp_cmnd = lpfc_cmd->fcp_cmnd;
 
         /* Word 0-2 - FCP_CMND */
         wqe->generic.bde.tus.f.bdeFlags =
             BUFF_TYPE_BDE_IMMED;
         wqe->generic.bde.tus.f.bdeSize = sgl->sge_len;
         wqe->generic.bde.addrHigh = 0;
         wqe->generic.bde.addrLow =  88;  /* Word 22 */
 
         bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1);
         bf_set(wqe_dbde, &wqe->fcp_iwrite.wqe_com, 0);
 
         /* Word 22-29  FCP CMND Payload */
         ptr = &wqe->words[22];
         memcpy(ptr, fcp_cmnd, sizeof(struct fcp_cmnd));
     } else {
         /* Word 0-2 - Inline BDE */
         wqe->generic.bde.tus.f.bdeFlags =  BUFF_TYPE_BDE_64;
         wqe->generic.bde.tus.f.bdeSize = sizeof(struct fcp_cmnd);
         wqe->generic.bde.addrHigh = sgl->addr_hi;
         wqe->generic.bde.addrLow =  sgl->addr_lo;
 
         /* Word 10 */
         bf_set(wqe_dbde, &wqe->generic.wqe_com, 1);
         bf_set(wqe_wqes, &wqe->generic.wqe_com, 0);
     }
 
     /* add the VMID tags as per switch response */
     if (unlikely(piocb->cmd_flag & LPFC_IO_VMID)) {
         if (phba->pport->vmid_flag & LPFC_VMID_TYPE_PRIO) {
             bf_set(wqe_ccpe, &wqe->fcp_iwrite.wqe_com, 1);
             bf_set(wqe_ccp, &wqe->fcp_iwrite.wqe_com,
                     (piocb->vmid_tag.cs_ctl_vmid));
         } else if (phba->cfg_vmid_app_header) {
             bf_set(wqe_appid, &wqe->fcp_iwrite.wqe_com, 1);
             bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1);
             wqe->words[31] = piocb->vmid_tag.app_id;
         }
     }
 }
 
 /**
  * __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 ringlock 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;
     union lpfc_wqe128 *wqe;
     struct lpfc_queue *wq;
     struct lpfc_sli_ring *pring;
     u32 ulp_command = get_job_cmnd(phba, piocb);
 
     /* Get the WQ */
     if ((piocb->cmd_flag & LPFC_IO_FCP) ||
         (piocb->cmd_flag & LPFC_USE_FCPWQIDX)) {
         wq = phba->sli4_hba.hdwq[piocb->hba_wqidx].io_wq;
     } else {
         wq = phba->sli4_hba.els_wq;
     }
 
     /* Get corresponding ring */
     pring = wq->pring;
 
     /*
      * The WQE can be either 64 or 128 bytes,
      */
 
     lockdep_assert_held(&pring->ring_lock);
     wqe = &piocb->wqe;
     if (piocb->sli4_xritag == NO_XRI) {
         if (ulp_command == CMD_ABORT_XRI_CX)
             sglq = NULL;
         else {
             sglq = __lpfc_sli_get_els_sglq(phba, piocb);
             if (!sglq) {
                 if (!(flag & SLI_IOCB_RET_IOCB)) {
                     __lpfc_sli_ringtx_put(phba,
                             pring,
                             piocb);
                     return IOCB_SUCCESS;
                 } else {
                     return IOCB_BUSY;
                 }
             }
         }
     } else if (piocb->cmd_flag &  LPFC_IO_FCP) {
         /* These IO's already have an XRI and a mapped sgl. */
         sglq = NULL;
     }
     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_lxritag);
         if (!sglq)
             return IOCB_ERROR;
     }
 
     if (sglq) {
         piocb->sli4_lxritag = sglq->sli4_lxritag;
         piocb->sli4_xritag = sglq->sli4_xritag;
 
         /* ABTS sent by initiator to CT exchange, the
          * RX_ID field will be filled with the newly
          * allocated responder XRI.
          */
         if (ulp_command == CMD_XMIT_BLS_RSP64_CX &&
             piocb->abort_bls == LPFC_ABTS_UNSOL_INT)
             bf_set(xmit_bls_rsp64_rxid, &wqe->xmit_bls_rsp,
                    piocb->sli4_xritag);
 
         bf_set(wqe_xri_tag, &wqe->generic.wqe_com,
                piocb->sli4_xritag);
 
         if (lpfc_wqe_bpl2sgl(phba, piocb, sglq) == NO_XRI)
             return IOCB_ERROR;
     }
 
     if (lpfc_sli4_wq_put(wq, wqe))
         return IOCB_ERROR;
 
     lpfc_sli_ringtxcmpl_put(phba, pring, piocb);
 
     return 0;
 }
 
 /*
  * lpfc_sli_issue_fcp_io - Wrapper func for issuing fcp i/o
  *
  * This routine wraps the actual fcp i/o function for issusing WQE for sli-4
  * or IOCB for sli-3  function.
  * pointer from the lpfc_hba struct.
  *
  * Return codes:
  * IOCB_ERROR - Error
  * IOCB_SUCCESS - Success
  * IOCB_BUSY - Busy
  **/
 int
 lpfc_sli_issue_fcp_io(struct lpfc_hba *phba, uint32_t ring_number,
               struct lpfc_iocbq *piocb, uint32_t flag)
 {
     return phba->__lpfc_sli_issue_fcp_io(phba, ring_number, piocb, flag);
 }
 
 /*
  * __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
  **/
 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);
 }
 
 static void
 __lpfc_sli_prep_els_req_rsp_s3(struct lpfc_iocbq *cmdiocbq,
                    struct lpfc_vport *vport,
                    struct lpfc_dmabuf *bmp, u16 cmd_size, u32 did,
                    u32 elscmd, u8 tmo, u8 expect_rsp)
 {
     struct lpfc_hba *phba = vport->phba;
     IOCB_t *cmd;
 
     cmd = &cmdiocbq->iocb;
     memset(cmd, 0, sizeof(*cmd));
 
     cmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
     cmd->un.elsreq64.bdl.addrLow = putPaddrLow(bmp->phys);
     cmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
 
     if (expect_rsp) {
         cmd->un.elsreq64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
         cmd->un.elsreq64.remoteID = did; /* DID */
         cmd->ulpCommand = CMD_ELS_REQUEST64_CR;
         cmd->ulpTimeout = tmo;
     } else {
         cmd->un.elsreq64.bdl.bdeSize = sizeof(struct ulp_bde64);
         cmd->un.genreq64.xmit_els_remoteID = did; /* DID */
         cmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX;
         cmd->ulpPU = PARM_NPIV_DID;
     }
     cmd->ulpBdeCount = 1;
     cmd->ulpLe = 1;
     cmd->ulpClass = CLASS3;
 
     /* If we have NPIV enabled, we want to send ELS traffic by VPI. */
     if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
         if (expect_rsp) {
             cmd->un.elsreq64.myID = vport->fc_myDID;
 
             /* For ELS_REQUEST64_CR, use the VPI by default */
             cmd->ulpContext = phba->vpi_ids[vport->vpi];
         }
 
         cmd->ulpCt_h = 0;
         /* The CT field must be 0=INVALID_RPI for the ECHO cmd */
         if (elscmd == ELS_CMD_ECHO)
             cmd->ulpCt_l = 0; /* context = invalid RPI */
         else
             cmd->ulpCt_l = 1; /* context = VPI */
     }
 }
 
 static void
 __lpfc_sli_prep_els_req_rsp_s4(struct lpfc_iocbq *cmdiocbq,
                    struct lpfc_vport *vport,
                    struct lpfc_dmabuf *bmp, u16 cmd_size, u32 did,
                    u32 elscmd, u8 tmo, u8 expect_rsp)
 {
     struct lpfc_hba  *phba = vport->phba;
     union lpfc_wqe128 *wqe;
     struct ulp_bde64_le *bde;
     u8 els_id;
 
     wqe = &cmdiocbq->wqe;
     memset(wqe, 0, sizeof(*wqe));
 
     /* Word 0 - 2 BDE */
     bde = (struct ulp_bde64_le *)&wqe->generic.bde;
     bde->addr_low = cpu_to_le32(putPaddrLow(bmp->phys));
     bde->addr_high = cpu_to_le32(putPaddrHigh(bmp->phys));
     bde->type_size = cpu_to_le32(cmd_size);
     bde->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64);
 
     if (expect_rsp) {
         bf_set(wqe_cmnd, &wqe->els_req.wqe_com, CMD_ELS_REQUEST64_WQE);
 
         /* Transfer length */
         wqe->els_req.payload_len = cmd_size;
         wqe->els_req.max_response_payload_len = FCELSSIZE;
 
         /* DID */
         bf_set(wqe_els_did, &wqe->els_req.wqe_dest, did);
 
         /* Word 11 - ELS_ID */
         switch (elscmd) {
         case ELS_CMD_PLOGI:
             els_id = LPFC_ELS_ID_PLOGI;
             break;
         case ELS_CMD_FLOGI:
             els_id = LPFC_ELS_ID_FLOGI;
             break;
         case ELS_CMD_LOGO:
             els_id = LPFC_ELS_ID_LOGO;
             break;
         case ELS_CMD_FDISC:
             if (!vport->fc_myDID) {
                 els_id = LPFC_ELS_ID_FDISC;
                 break;
             }
             fallthrough;
         default:
             els_id = LPFC_ELS_ID_DEFAULT;
             break;
         }
 
         bf_set(wqe_els_id, &wqe->els_req.wqe_com, els_id);
     } else {
         /* DID */
         bf_set(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest, did);
 
         /* Transfer length */
         wqe->xmit_els_rsp.response_payload_len = cmd_size;
 
         bf_set(wqe_cmnd, &wqe->xmit_els_rsp.wqe_com,
                CMD_XMIT_ELS_RSP64_WQE);
     }
 
     bf_set(wqe_tmo, &wqe->generic.wqe_com, tmo);
     bf_set(wqe_reqtag, &wqe->generic.wqe_com, cmdiocbq->iotag);
     bf_set(wqe_class, &wqe->generic.wqe_com, CLASS3);
 
     /* If we have NPIV enabled, we want to send ELS traffic by VPI.
      * For SLI4, since the driver controls VPIs we also want to include
      * all ELS pt2pt protocol traffic as well.
      */
     if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) ||
         (vport->fc_flag & FC_PT2PT)) {
         if (expect_rsp) {
             bf_set(els_req64_sid, &wqe->els_req, vport->fc_myDID);
 
             /* For ELS_REQUEST64_WQE, use the VPI by default */
             bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com,
                    phba->vpi_ids[vport->vpi]);
         }
 
         /* The CT field must be 0=INVALID_RPI for the ECHO cmd */
         if (elscmd == ELS_CMD_ECHO)
             bf_set(wqe_ct, &wqe->generic.wqe_com, 0);
         else
             bf_set(wqe_ct, &wqe->generic.wqe_com, 1);
     }
 }
 
 void
 lpfc_sli_prep_els_req_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocbq,
               struct lpfc_vport *vport, struct lpfc_dmabuf *bmp,
               u16 cmd_size, u32 did, u32 elscmd, u8 tmo,
               u8 expect_rsp)
 {
     phba->__lpfc_sli_prep_els_req_rsp(cmdiocbq, vport, bmp, cmd_size, did,
                       elscmd, tmo, expect_rsp);
 }
 
 static void
 __lpfc_sli_prep_gen_req_s3(struct lpfc_iocbq *cmdiocbq, struct lpfc_dmabuf *bmp,
                u16 rpi, u32 num_entry, u8 tmo)
 {
     IOCB_t *cmd;
 
     cmd = &cmdiocbq->iocb;
     memset(cmd, 0, sizeof(*cmd));
 
     cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
     cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys);
     cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
     cmd->un.genreq64.bdl.bdeSize = num_entry * sizeof(struct ulp_bde64);
 
     cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
     cmd->un.genreq64.w5.hcsw.Type = FC_TYPE_CT;
     cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA);
 
     cmd->ulpContext = rpi;
     cmd->ulpClass = CLASS3;
     cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
     cmd->ulpBdeCount = 1;
     cmd->ulpLe = 1;
     cmd->ulpOwner = OWN_CHIP;
     cmd->ulpTimeout = tmo;
 }
 
 static void
 __lpfc_sli_prep_gen_req_s4(struct lpfc_iocbq *cmdiocbq, struct lpfc_dmabuf *bmp,
                u16 rpi, u32 num_entry, u8 tmo)
 {
     union lpfc_wqe128 *cmdwqe;
     struct ulp_bde64_le *bde, *bpl;
     u32 xmit_len = 0, total_len = 0, size, type, i;
 
     cmdwqe = &cmdiocbq->wqe;
     memset(cmdwqe, 0, sizeof(*cmdwqe));
 
     /* Calculate total_len and xmit_len */
     bpl = (struct ulp_bde64_le *)bmp->virt;
     for (i = 0; i < num_entry; i++) {
         size = le32_to_cpu(bpl[i].type_size) & ULP_BDE64_SIZE_MASK;
         total_len += size;
     }
     for (i = 0; i < num_entry; i++) {
         size = le32_to_cpu(bpl[i].type_size) & ULP_BDE64_SIZE_MASK;
         type = le32_to_cpu(bpl[i].type_size) & ULP_BDE64_TYPE_MASK;
         if (type != ULP_BDE64_TYPE_BDE_64)
             break;
         xmit_len += size;
     }
 
     /* Words 0 - 2 */
     bde = (struct ulp_bde64_le *)&cmdwqe->generic.bde;
     bde->addr_low = bpl->addr_low;
     bde->addr_high = bpl->addr_high;
     bde->type_size = cpu_to_le32(xmit_len);
     bde->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64);
 
     /* Word 3 */
     cmdwqe->gen_req.request_payload_len = xmit_len;
 
     /* Word 5 */
     bf_set(wqe_type, &cmdwqe->gen_req.wge_ctl, FC_TYPE_CT);
     bf_set(wqe_rctl, &cmdwqe->gen_req.wge_ctl, FC_RCTL_DD_UNSOL_CTL);
     bf_set(wqe_si, &cmdwqe->gen_req.wge_ctl, 1);
     bf_set(wqe_la, &cmdwqe->gen_req.wge_ctl, 1);
 
     /* Word 6 */
     bf_set(wqe_ctxt_tag, &cmdwqe->gen_req.wqe_com, rpi);
 
     /* Word 7 */
     bf_set(wqe_tmo, &cmdwqe->gen_req.wqe_com, tmo);
     bf_set(wqe_class, &cmdwqe->gen_req.wqe_com, CLASS3);
     bf_set(wqe_cmnd, &cmdwqe->gen_req.wqe_com, CMD_GEN_REQUEST64_CR);
     bf_set(wqe_ct, &cmdwqe->gen_req.wqe_com, SLI4_CT_RPI);
 
     /* Word 12 */
     cmdwqe->gen_req.max_response_payload_len = total_len - xmit_len;
 }
 
 void
 lpfc_sli_prep_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocbq,
               struct lpfc_dmabuf *bmp, u16 rpi, u32 num_entry, u8 tmo)
 {
     phba->__lpfc_sli_prep_gen_req(cmdiocbq, bmp, rpi, num_entry, tmo);
 }
 
 static void
 __lpfc_sli_prep_xmit_seq64_s3(struct lpfc_iocbq *cmdiocbq,
                   struct lpfc_dmabuf *bmp, u16 rpi, u16 ox_id,
                   u32 num_entry, u8 rctl, u8 last_seq, u8 cr_cx_cmd)
 {
     IOCB_t *icmd;
 
     icmd = &cmdiocbq->iocb;
     memset(icmd, 0, sizeof(*icmd));
 
     icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
     icmd->un.xseq64.bdl.addrLow = putPaddrLow(bmp->phys);
     icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
     icmd->un.xseq64.bdl.bdeSize = (num_entry * sizeof(struct ulp_bde64));
     icmd->un.xseq64.w5.hcsw.Fctl = LA;
     if (last_seq)
         icmd->un.xseq64.w5.hcsw.Fctl |= LS;
     icmd->un.xseq64.w5.hcsw.Dfctl = 0;
     icmd->un.xseq64.w5.hcsw.Rctl = rctl;
     icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
 
     icmd->ulpBdeCount = 1;
     icmd->ulpLe = 1;
     icmd->ulpClass = CLASS3;
 
     switch (cr_cx_cmd) {
     case CMD_XMIT_SEQUENCE64_CR:
         icmd->ulpContext = rpi;
         icmd->ulpCommand = CMD_XMIT_SEQUENCE64_CR;
         break;
     case CMD_XMIT_SEQUENCE64_CX:
         icmd->ulpContext = ox_id;
         icmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
         break;
     default:
         break;
     }
 }
 
 static void
 __lpfc_sli_prep_xmit_seq64_s4(struct lpfc_iocbq *cmdiocbq,
                   struct lpfc_dmabuf *bmp, u16 rpi, u16 ox_id,
                   u32 full_size, u8 rctl, u8 last_seq, u8 cr_cx_cmd)
 {
     union lpfc_wqe128 *wqe;
     struct ulp_bde64 *bpl;
 
     wqe = &cmdiocbq->wqe;
     memset(wqe, 0, sizeof(*wqe));
 
     /* Words 0 - 2 */
     bpl = (struct ulp_bde64 *)bmp->virt;
     wqe->xmit_sequence.bde.addrHigh = bpl->addrHigh;
     wqe->xmit_sequence.bde.addrLow = bpl->addrLow;
     wqe->xmit_sequence.bde.tus.w = bpl->tus.w;
 
     /* Word 5 */
     bf_set(wqe_ls, &wqe->xmit_sequence.wge_ctl, last_seq);
     bf_set(wqe_la, &wqe->xmit_sequence.wge_ctl, 1);
     bf_set(wqe_dfctl, &wqe->xmit_sequence.wge_ctl, 0);
     bf_set(wqe_rctl, &wqe->xmit_sequence.wge_ctl, rctl);
     bf_set(wqe_type, &wqe->xmit_sequence.wge_ctl, FC_TYPE_CT);
 
     /* Word 6 */
     bf_set(wqe_ctxt_tag, &wqe->xmit_sequence.wqe_com, rpi);
 
     bf_set(wqe_cmnd, &wqe->xmit_sequence.wqe_com,
            CMD_XMIT_SEQUENCE64_WQE);
 
     /* Word 7 */
     bf_set(wqe_class, &wqe->xmit_sequence.wqe_com, CLASS3);
 
     /* Word 9 */
     bf_set(wqe_rcvoxid, &wqe->xmit_sequence.wqe_com, ox_id);
 
     /* Word 12 */
     if (cmdiocbq->cmd_flag & (LPFC_IO_LIBDFC | LPFC_IO_LOOPBACK))
         wqe->xmit_sequence.xmit_len = full_size;
     else
         wqe->xmit_sequence.xmit_len =
             wqe->xmit_sequence.bde.tus.f.bdeSize;
 }
 
 void
 lpfc_sli_prep_xmit_seq64(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocbq,
              struct lpfc_dmabuf *bmp, u16 rpi, u16 ox_id,
              u32 num_entry, u8 rctl, u8 last_seq, u8 cr_cx_cmd)
 {
     phba->__lpfc_sli_prep_xmit_seq64(cmdiocbq, bmp, rpi, ox_id, num_entry,
                      rctl, last_seq, cr_cx_cmd);
 }
 
 static void
 __lpfc_sli_prep_abort_xri_s3(struct lpfc_iocbq *cmdiocbq, u16 ulp_context,
                  u16 iotag, u8 ulp_class, u16 cqid, bool ia,
                  bool wqec)
 {
     IOCB_t *icmd = NULL;
 
     icmd = &cmdiocbq->iocb;
     memset(icmd, 0, sizeof(*icmd));
 
     /* Word 5 */
     icmd->un.acxri.abortContextTag = ulp_context;
     icmd->un.acxri.abortIoTag = iotag;
 
     if (ia) {
         /* Word 7 */
         icmd->ulpCommand = CMD_CLOSE_XRI_CN;
     } else {
         /* Word 3 */
         icmd->un.acxri.abortType = ABORT_TYPE_ABTS;
 
         /* Word 7 */
         icmd->ulpClass = ulp_class;
         icmd->ulpCommand = CMD_ABORT_XRI_CN;
     }
 
     /* Word 7 */
     icmd->ulpLe = 1;
 }
 
 static void
 __lpfc_sli_prep_abort_xri_s4(struct lpfc_iocbq *cmdiocbq, u16 ulp_context,
                  u16 iotag, u8 ulp_class, u16 cqid, bool ia,
                  bool wqec)
 {
     union lpfc_wqe128 *wqe;
 
     wqe = &cmdiocbq->wqe;
     memset(wqe, 0, sizeof(*wqe));
 
     /* Word 3 */
     bf_set(abort_cmd_criteria, &wqe->abort_cmd, T_XRI_TAG);
     if (ia)
         bf_set(abort_cmd_ia, &wqe->abort_cmd, 1);
     else
         bf_set(abort_cmd_ia, &wqe->abort_cmd, 0);
 
     /* Word 7 */
     bf_set(wqe_cmnd, &wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_WQE);
 
     /* Word 8 */
     wqe->abort_cmd.wqe_com.abort_tag = ulp_context;
 
     /* Word 9 */
     bf_set(wqe_reqtag, &wqe->abort_cmd.wqe_com, iotag);
 
     /* Word 10 */
     bf_set(wqe_qosd, &wqe->abort_cmd.wqe_com, 1);
 
     /* Word 11 */
     if (wqec)
         bf_set(wqe_wqec, &wqe->abort_cmd.wqe_com, 1);
     bf_set(wqe_cqid, &wqe->abort_cmd.wqe_com, cqid);
     bf_set(wqe_cmd_type, &wqe->abort_cmd.wqe_com, OTHER_COMMAND);
 }
 
 void
 lpfc_sli_prep_abort_xri(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocbq,
             u16 ulp_context, u16 iotag, u8 ulp_class, u16 cqid,
             bool ia, bool wqec)
 {
     phba->__lpfc_sli_prep_abort_xri(cmdiocbq, ulp_context, iotag, ulp_class,
                     cqid, ia, wqec);
 }
 
 /**
  * lpfc_sli_api_table_setup - Set up sli api function 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;
         phba->__lpfc_sli_issue_fcp_io = __lpfc_sli_issue_fcp_io_s3;
         phba->__lpfc_sli_prep_els_req_rsp = __lpfc_sli_prep_els_req_rsp_s3;
         phba->__lpfc_sli_prep_gen_req = __lpfc_sli_prep_gen_req_s3;
         phba->__lpfc_sli_prep_xmit_seq64 = __lpfc_sli_prep_xmit_seq64_s3;
         phba->__lpfc_sli_prep_abort_xri = __lpfc_sli_prep_abort_xri_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;
         phba->__lpfc_sli_issue_fcp_io = __lpfc_sli_issue_fcp_io_s4;
         phba->__lpfc_sli_prep_els_req_rsp = __lpfc_sli_prep_els_req_rsp_s4;
         phba->__lpfc_sli_prep_gen_req = __lpfc_sli_prep_gen_req_s4;
         phba->__lpfc_sli_prep_xmit_seq64 = __lpfc_sli_prep_xmit_seq64_s4;
         phba->__lpfc_sli_prep_abort_xri = __lpfc_sli_prep_abort_xri_s4;
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "1419 Invalid HBA PCI-device group: 0x%x\n",
                 dev_grp);
         return -ENODEV;
     }
     return 0;
 }
 
 /**
  * lpfc_sli4_calc_ring - Calculates which ring to use
  * @phba: Pointer to HBA context object.
  * @piocb: Pointer to command iocb.
  *
  * For SLI4 only, FCP IO can deferred to one fo many WQs, based on
  * hba_wqidx, thus we need to calculate the corresponding ring.
  * Since ABORTS must go on the same WQ of the command they are
  * aborting, we use command's hba_wqidx.
  */
 struct lpfc_sli_ring *
 lpfc_sli4_calc_ring(struct lpfc_hba *phba, struct lpfc_iocbq *piocb)
 {
     struct lpfc_io_buf *lpfc_cmd;
 
     if (piocb->cmd_flag & (LPFC_IO_FCP | LPFC_USE_FCPWQIDX)) {
         if (unlikely(!phba->sli4_hba.hdwq))
             return NULL;
         /*
          * for abort iocb hba_wqidx should already
          * be setup based on what work queue we used.
          */
         if (!(piocb->cmd_flag & LPFC_USE_FCPWQIDX)) {
             lpfc_cmd = piocb->io_buf;
             piocb->hba_wqidx = lpfc_cmd->hdwq_no;
         }
         return phba->sli4_hba.hdwq[piocb->hba_wqidx].io_wq->pring;
     } else {
         if (unlikely(!phba->sli4_hba.els_wq))
             return NULL;
         piocb->hba_wqidx = 0;
         return phba->sli4_hba.els_wq->pring;
     }
 }
 
 /**
  * lpfc_sli_issue_iocb - Wrapper function for __lpfc_sli_issue_iocb
  * @phba: Pointer to HBA context object.
  * @ring_number: Ring number
  * @piocb: Pointer to command iocb.
  * @flag: Flag indicating if this command can be put into txq.
  *
  * lpfc_sli_issue_iocb is a wrapper around __lpfc_sli_issue_iocb
  * function. This function gets the hbalock and calls
  * __lpfc_sli_issue_iocb function and will return the error returned
  * by __lpfc_sli_issue_iocb function. This wrapper is used by
  * functions which do not hold hbalock.
  **/
 int
 lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number,
             struct lpfc_iocbq *piocb, uint32_t flag)
 {
     struct lpfc_sli_ring *pring;
     struct lpfc_queue *eq;
     unsigned long iflags;
     int rc;
 
     /* If the PCI channel is in offline state, do not post iocbs. */
     if (unlikely(pci_channel_offline(phba->pcidev)))
         return IOCB_ERROR;
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         lpfc_sli_prep_wqe(phba, piocb);
 
         eq = phba->sli4_hba.hdwq[piocb->hba_wqidx].hba_eq;
 
         pring = lpfc_sli4_calc_ring(phba, piocb);
         if (unlikely(pring == NULL))
             return IOCB_ERROR;
 
         spin_lock_irqsave(&pring->ring_lock, iflags);
         rc = __lpfc_sli_issue_iocb(phba, ring_number, piocb, flag);
         spin_unlock_irqrestore(&pring->ring_lock, iflags);
 
         lpfc_sli4_poll_eq(eq, LPFC_POLL_FASTPATH);
     } else {
         /* For now, SLI2/3 will still use hbalock */
         spin_lock_irqsave(&phba->hbalock, iflags);
         rc = __lpfc_sli_issue_iocb(phba, ring_number, piocb, flag);
         spin_unlock_irqrestore(&phba->hbalock, iflags);
     }
     return rc;
 }
 
 /**
  * lpfc_extra_ring_setup - Extra ring setup function
  * @phba: Pointer to HBA context object.
  *
  * This function is called while driver attaches with the
  * HBA to setup the extra ring. The extra ring is used
  * only when driver needs to support target mode functionality
  * or IP over FC functionalities.
  *
  * This function is called with no lock held. SLI3 only.
  **/
 static int
 lpfc_extra_ring_setup( struct lpfc_hba *phba)
 {
     struct lpfc_sli *psli;
     struct lpfc_sli_ring *pring;
 
     psli = &phba->sli;
 
     /* Adjust cmd/rsp ring iocb entries more evenly */
 
     /* Take some away from the FCP ring */
     pring = &psli->sli3_ring[LPFC_FCP_RING];
     pring->sli.sli3.numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES;
     pring->sli.sli3.numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES;
     pring->sli.sli3.numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES;
     pring->sli.sli3.numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES;
 
     /* and give them to the extra ring */
     pring = &psli->sli3_ring[LPFC_EXTRA_RING];
 
     pring->sli.sli3.numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
     pring->sli.sli3.numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
     pring->sli.sli3.numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
     pring->sli.sli3.numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
 
     /* Setup default profile for this ring */
     pring->iotag_max = 4096;
     pring->num_mask = 1;
     pring->prt[0].profile = 0;      /* Mask 0 */
     pring->prt[0].rctl = phba->cfg_multi_ring_rctl;
     pring->prt[0].type = phba->cfg_multi_ring_type;
     pring->prt[0].lpfc_sli_rcv_unsol_event = NULL;
     return 0;
 }
 
 static void
 lpfc_sli_post_recovery_event(struct lpfc_hba *phba,
                  struct lpfc_nodelist *ndlp)
 {
     unsigned long iflags;
     struct lpfc_work_evt  *evtp = &ndlp->recovery_evt;
 
     spin_lock_irqsave(&phba->hbalock, iflags);
     if (!list_empty(&evtp->evt_listp)) {
         spin_unlock_irqrestore(&phba->hbalock, iflags);
         return;
     }
 
     /* Incrementing the reference count until the queued work is done. */
     evtp->evt_arg1  = lpfc_nlp_get(ndlp);
     if (!evtp->evt_arg1) {
         spin_unlock_irqrestore(&phba->hbalock, iflags);
         return;
     }
     evtp->evt = LPFC_EVT_RECOVER_PORT;
     list_add_tail(&evtp->evt_listp, &phba->work_list);
     spin_unlock_irqrestore(&phba->hbalock, iflags);
 
     lpfc_worker_wake_up(phba);
 }
 
 /* lpfc_sli_abts_err_handler - handle a failed ABTS request from an SLI3 port.
  * @phba: Pointer to HBA context object.
  * @iocbq: Pointer to iocb object.
  *
  * The async_event handler calls this routine when it receives
  * an ASYNC_STATUS_CN event from the port.  The port generates
  * this event when an Abort Sequence request to an rport fails
  * twice in succession.  The abort could be originated by the
  * driver or by the port.  The ABTS could have been for an ELS
  * or FCP IO.  The port only generates this event when an ABTS
  * fails to complete after one retry.
  */
 static void
 lpfc_sli_abts_err_handler(struct lpfc_hba *phba,
               struct lpfc_iocbq *iocbq)
 {
     struct lpfc_nodelist *ndlp = NULL;
     uint16_t rpi = 0, vpi = 0;
     struct lpfc_vport *vport = NULL;
 
     /* The rpi in the ulpContext is vport-sensitive. */
     vpi = iocbq->iocb.un.asyncstat.sub_ctxt_tag;
     rpi = iocbq->iocb.ulpContext;
 
     lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
             "3092 Port generated ABTS async event "
             "on vpi %d rpi %d status 0x%x\n",
             vpi, rpi, iocbq->iocb.ulpStatus);
 
     vport = lpfc_find_vport_by_vpid(phba, vpi);
     if (!vport)
         goto err_exit;
     ndlp = lpfc_findnode_rpi(vport, rpi);
     if (!ndlp)
         goto err_exit;
 
     if (iocbq->iocb.ulpStatus == IOSTAT_LOCAL_REJECT)
         lpfc_sli_abts_recover_port(vport, ndlp);
     return;
 
  err_exit:
     lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
             "3095 Event Context not found, no "
             "action on vpi %d rpi %d status 0x%x, reason 0x%x\n",
             vpi, rpi, iocbq->iocb.ulpStatus,
             iocbq->iocb.ulpContext);
 }
 
 /* lpfc_sli4_abts_err_handler - handle a failed ABTS request from an SLI4 port.
  * @phba: pointer to HBA context object.
  * @ndlp: nodelist pointer for the impacted rport.
  * @axri: pointer to the wcqe containing the failed exchange.
  *
  * The driver calls this routine when it receives an ABORT_XRI_FCP CQE from the
  * port.  The port generates this event when an abort exchange request to an
  * rport fails twice in succession with no reply.  The abort could be originated
  * by the driver or by the port.  The ABTS could have been for an ELS or FCP IO.
  */
 void
 lpfc_sli4_abts_err_handler(struct lpfc_hba *phba,
                struct lpfc_nodelist *ndlp,
                struct sli4_wcqe_xri_aborted *axri)
 {
     uint32_t ext_status = 0;
 
     if (!ndlp) {
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "3115 Node Context not found, driver "
                 "ignoring abts err event\n");
         return;
     }
 
     lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
             "3116 Port generated FCP XRI ABORT event on "
             "vpi %d rpi %d xri x%x status 0x%x parameter x%x\n",
             ndlp->vport->vpi, phba->sli4_hba.rpi_ids[ndlp->nlp_rpi],
             bf_get(lpfc_wcqe_xa_xri, axri),
             bf_get(lpfc_wcqe_xa_status, axri),
             axri->parameter);
 
     /*
      * Catch the ABTS protocol failure case.  Older OCe FW releases returned
      * LOCAL_REJECT and 0 for a failed ABTS exchange and later OCe and
      * LPe FW releases returned LOCAL_REJECT and SEQUENCE_TIMEOUT.
      */
     ext_status = axri->parameter & IOERR_PARAM_MASK;
     if ((bf_get(lpfc_wcqe_xa_status, axri) == IOSTAT_LOCAL_REJECT) &&
         ((ext_status == IOERR_SEQUENCE_TIMEOUT) || (ext_status == 0)))
         lpfc_sli_post_recovery_event(phba, ndlp);
 }
 
 /**
  * lpfc_sli_async_event_handler - ASYNC iocb handler function
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  * @iocbq: Pointer to iocb object.
  *
  * This function is called by the slow ring event handler
  * function when there is an ASYNC event iocb in the ring.
  * This function is called with no lock held.
  * Currently this function handles only temperature related
  * ASYNC events. The function decodes the temperature sensor
  * event message and posts events for the management applications.
  **/
 static void
 lpfc_sli_async_event_handler(struct lpfc_hba * phba,
     struct lpfc_sli_ring * pring, struct lpfc_iocbq * iocbq)
 {
     IOCB_t *icmd;
     uint16_t evt_code;
     struct temp_event temp_event_data;
     struct Scsi_Host *shost;
     uint32_t *iocb_w;
 
     icmd = &iocbq->iocb;
     evt_code = icmd->un.asyncstat.evt_code;
 
     switch (evt_code) {
     case ASYNC_TEMP_WARN:
     case ASYNC_TEMP_SAFE:
         temp_event_data.data = (uint32_t) icmd->ulpContext;
         temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
         if (evt_code == ASYNC_TEMP_WARN) {
             temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0347 Adapter is very hot, please take "
                 "corrective action. temperature : %d Celsius\n",
                 (uint32_t) icmd->ulpContext);
         } else {
             temp_event_data.event_code = LPFC_NORMAL_TEMP;
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0340 Adapter temperature is OK now. "
                 "temperature : %d Celsius\n",
                 (uint32_t) icmd->ulpContext);
         }
 
         /* Send temperature change event to applications */
         shost = lpfc_shost_from_vport(phba->pport);
         fc_host_post_vendor_event(shost, fc_get_event_number(),
             sizeof(temp_event_data), (char *) &temp_event_data,
             LPFC_NL_VENDOR_ID);
         break;
     case ASYNC_STATUS_CN:
         lpfc_sli_abts_err_handler(phba, iocbq);
         break;
     default:
         iocb_w = (uint32_t *) icmd;
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "0346 Ring %d handler: unexpected ASYNC_STATUS"
             " evt_code 0x%x\n"
             "W0  0x%08x W1  0x%08x W2  0x%08x W3  0x%08x\n"
             "W4  0x%08x W5  0x%08x W6  0x%08x W7  0x%08x\n"
             "W8  0x%08x W9  0x%08x W10 0x%08x W11 0x%08x\n"
             "W12 0x%08x W13 0x%08x W14 0x%08x W15 0x%08x\n",
             pring->ringno, icmd->un.asyncstat.evt_code,
             iocb_w[0], iocb_w[1], iocb_w[2], iocb_w[3],
             iocb_w[4], iocb_w[5], iocb_w[6], iocb_w[7],
             iocb_w[8], iocb_w[9], iocb_w[10], iocb_w[11],
             iocb_w[12], iocb_w[13], iocb_w[14], iocb_w[15]);
 
         break;
     }
 }
 
 
 /**
  * lpfc_sli4_setup - SLI ring setup function
  * @phba: Pointer to HBA context object.
  *
  * lpfc_sli_setup sets up rings of the SLI interface with
  * number of iocbs per ring and iotags. This function is
  * called while driver attach to the HBA and before the
  * interrupts are enabled. So there is no need for locking.
  *
  * This function always returns 0.
  **/
 int
 lpfc_sli4_setup(struct lpfc_hba *phba)
 {
     struct lpfc_sli_ring *pring;
 
     pring = phba->sli4_hba.els_wq->pring;
     pring->num_mask = LPFC_MAX_RING_MASK;
     pring->prt[0].profile = 0;  /* Mask 0 */
     pring->prt[0].rctl = FC_RCTL_ELS_REQ;
     pring->prt[0].type = FC_TYPE_ELS;
     pring->prt[0].lpfc_sli_rcv_unsol_event =
         lpfc_els_unsol_event;
     pring->prt[1].profile = 0;  /* Mask 1 */
     pring->prt[1].rctl = FC_RCTL_ELS_REP;
     pring->prt[1].type = FC_TYPE_ELS;
     pring->prt[1].lpfc_sli_rcv_unsol_event =
         lpfc_els_unsol_event;
     pring->prt[2].profile = 0;  /* Mask 2 */
     /* NameServer Inquiry */
     pring->prt[2].rctl = FC_RCTL_DD_UNSOL_CTL;
     /* NameServer */
     pring->prt[2].type = FC_TYPE_CT;
     pring->prt[2].lpfc_sli_rcv_unsol_event =
         lpfc_ct_unsol_event;
     pring->prt[3].profile = 0;  /* Mask 3 */
     /* NameServer response */
     pring->prt[3].rctl = FC_RCTL_DD_SOL_CTL;
     /* NameServer */
     pring->prt[3].type = FC_TYPE_CT;
     pring->prt[3].lpfc_sli_rcv_unsol_event =
         lpfc_ct_unsol_event;
     return 0;
 }
 
 /**
  * lpfc_sli_setup - SLI ring setup function
  * @phba: Pointer to HBA context object.
  *
  * lpfc_sli_setup sets up rings of the SLI interface with
  * number of iocbs per ring and iotags. This function is
  * called while driver attach to the HBA and before the
  * interrupts are enabled. So there is no need for locking.
  *
  * This function always returns 0. SLI3 only.
  **/
 int
 lpfc_sli_setup(struct lpfc_hba *phba)
 {
     int i, totiocbsize = 0;
     struct lpfc_sli *psli = &phba->sli;
     struct lpfc_sli_ring *pring;
 
     psli->num_rings = MAX_SLI3_CONFIGURED_RINGS;
     psli->sli_flag = 0;
 
     psli->iocbq_lookup = NULL;
     psli->iocbq_lookup_len = 0;
     psli->last_iotag = 0;
 
     for (i = 0; i < psli->num_rings; i++) {
         pring = &psli->sli3_ring[i];
         switch (i) {
         case LPFC_FCP_RING: /* ring 0 - FCP */
             /* numCiocb and numRiocb are used in config_port */
             pring->sli.sli3.numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
             pring->sli.sli3.numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
             pring->sli.sli3.numCiocb +=
                 SLI2_IOCB_CMD_R1XTRA_ENTRIES;
             pring->sli.sli3.numRiocb +=
                 SLI2_IOCB_RSP_R1XTRA_ENTRIES;
             pring->sli.sli3.numCiocb +=
                 SLI2_IOCB_CMD_R3XTRA_ENTRIES;
             pring->sli.sli3.numRiocb +=
                 SLI2_IOCB_RSP_R3XTRA_ENTRIES;
             pring->sli.sli3.sizeCiocb = (phba->sli_rev == 3) ?
                             SLI3_IOCB_CMD_SIZE :
                             SLI2_IOCB_CMD_SIZE;
             pring->sli.sli3.sizeRiocb = (phba->sli_rev == 3) ?
                             SLI3_IOCB_RSP_SIZE :
                             SLI2_IOCB_RSP_SIZE;
             pring->iotag_ctr = 0;
             pring->iotag_max =
                 (phba->cfg_hba_queue_depth * 2);
             pring->fast_iotag = pring->iotag_max;
             pring->num_mask = 0;
             break;
         case LPFC_EXTRA_RING:   /* ring 1 - EXTRA */
             /* numCiocb and numRiocb are used in config_port */
             pring->sli.sli3.numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
             pring->sli.sli3.numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
             pring->sli.sli3.sizeCiocb = (phba->sli_rev == 3) ?
                             SLI3_IOCB_CMD_SIZE :
                             SLI2_IOCB_CMD_SIZE;
             pring->sli.sli3.sizeRiocb = (phba->sli_rev == 3) ?
                             SLI3_IOCB_RSP_SIZE :
                             SLI2_IOCB_RSP_SIZE;
             pring->iotag_max = phba->cfg_hba_queue_depth;
             pring->num_mask = 0;
             break;
         case LPFC_ELS_RING: /* ring 2 - ELS / CT */
             /* numCiocb and numRiocb are used in config_port */
             pring->sli.sli3.numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
             pring->sli.sli3.numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
             pring->sli.sli3.sizeCiocb = (phba->sli_rev == 3) ?
                             SLI3_IOCB_CMD_SIZE :
                             SLI2_IOCB_CMD_SIZE;
             pring->sli.sli3.sizeRiocb = (phba->sli_rev == 3) ?
                             SLI3_IOCB_RSP_SIZE :
                             SLI2_IOCB_RSP_SIZE;
             pring->fast_iotag = 0;
             pring->iotag_ctr = 0;
             pring->iotag_max = 4096;
             pring->lpfc_sli_rcv_async_status =
                 lpfc_sli_async_event_handler;
             pring->num_mask = LPFC_MAX_RING_MASK;
             pring->prt[0].profile = 0;  /* Mask 0 */
             pring->prt[0].rctl = FC_RCTL_ELS_REQ;
             pring->prt[0].type = FC_TYPE_ELS;
             pring->prt[0].lpfc_sli_rcv_unsol_event =
                 lpfc_els_unsol_event;
             pring->prt[1].profile = 0;  /* Mask 1 */
             pring->prt[1].rctl = FC_RCTL_ELS_REP;
             pring->prt[1].type = FC_TYPE_ELS;
             pring->prt[1].lpfc_sli_rcv_unsol_event =
                 lpfc_els_unsol_event;
             pring->prt[2].profile = 0;  /* Mask 2 */
             /* NameServer Inquiry */
             pring->prt[2].rctl = FC_RCTL_DD_UNSOL_CTL;
             /* NameServer */
             pring->prt[2].type = FC_TYPE_CT;
             pring->prt[2].lpfc_sli_rcv_unsol_event =
                 lpfc_ct_unsol_event;
             pring->prt[3].profile = 0;  /* Mask 3 */
             /* NameServer response */
             pring->prt[3].rctl = FC_RCTL_DD_SOL_CTL;
             /* NameServer */
             pring->prt[3].type = FC_TYPE_CT;
             pring->prt[3].lpfc_sli_rcv_unsol_event =
                 lpfc_ct_unsol_event;
             break;
         }
         totiocbsize += (pring->sli.sli3.numCiocb *
             pring->sli.sli3.sizeCiocb) +
             (pring->sli.sli3.numRiocb * pring->sli.sli3.sizeRiocb);
     }
     if (totiocbsize > MAX_SLIM_IOCB_SIZE) {
         /* Too many cmd / rsp ring entries in SLI2 SLIM */
         printk(KERN_ERR "%d:0462 Too many cmd / rsp ring entries in "
                "SLI2 SLIM Data: x%x x%lx\n",
                phba->brd_no, totiocbsize,
                (unsigned long) MAX_SLIM_IOCB_SIZE);
     }
     if (phba->cfg_multi_ring_support == 2)
         lpfc_extra_ring_setup(phba);
 
     return 0;
 }
 
 /**
  * lpfc_sli4_queue_init - Queue initialization function
  * @phba: Pointer to HBA context object.
  *
  * lpfc_sli4_queue_init sets up mailbox queues and iocb queues for each
  * ring. This function also initializes ring indices of each ring.
  * This function is called during the initialization of the SLI
  * interface of an HBA.
  * This function is called with no lock held and always returns
  * 1.
  **/
 void
 lpfc_sli4_queue_init(struct lpfc_hba *phba)
 {
     struct lpfc_sli *psli;
     struct lpfc_sli_ring *pring;
     int i;
 
     psli = &phba->sli;
     spin_lock_irq(&phba->hbalock);
     INIT_LIST_HEAD(&psli->mboxq);
     INIT_LIST_HEAD(&psli->mboxq_cmpl);
     /* Initialize list headers for txq and txcmplq as double linked lists */
     for (i = 0; i < phba->cfg_hdw_queue; i++) {
         pring = phba->sli4_hba.hdwq[i].io_wq->pring;
         pring->flag = 0;
         pring->ringno = LPFC_FCP_RING;
         pring->txcmplq_cnt = 0;
         INIT_LIST_HEAD(&pring->txq);
         INIT_LIST_HEAD(&pring->txcmplq);
         INIT_LIST_HEAD(&pring->iocb_continueq);
         spin_lock_init(&pring->ring_lock);
     }
     pring = phba->sli4_hba.els_wq->pring;
     pring->flag = 0;
     pring->ringno = LPFC_ELS_RING;
     pring->txcmplq_cnt = 0;
     INIT_LIST_HEAD(&pring->txq);
     INIT_LIST_HEAD(&pring->txcmplq);
     INIT_LIST_HEAD(&pring->iocb_continueq);
     spin_lock_init(&pring->ring_lock);
 
     if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
         pring = phba->sli4_hba.nvmels_wq->pring;
         pring->flag = 0;
         pring->ringno = LPFC_ELS_RING;
         pring->txcmplq_cnt = 0;
         INIT_LIST_HEAD(&pring->txq);
         INIT_LIST_HEAD(&pring->txcmplq);
         INIT_LIST_HEAD(&pring->iocb_continueq);
         spin_lock_init(&pring->ring_lock);
     }
 
     spin_unlock_irq(&phba->hbalock);
 }
 
 /**
  * lpfc_sli_queue_init - Queue initialization function
  * @phba: Pointer to HBA context object.
  *
  * lpfc_sli_queue_init sets up mailbox queues and iocb queues for each
  * ring. This function also initializes ring indices of each ring.
  * This function is called during the initialization of the SLI
  * interface of an HBA.
  * This function is called with no lock held and always returns
  * 1.
  **/
 void
 lpfc_sli_queue_init(struct lpfc_hba *phba)
 {
     struct lpfc_sli *psli;
     struct lpfc_sli_ring *pring;
     int i;
 
     psli = &phba->sli;
     spin_lock_irq(&phba->hbalock);
     INIT_LIST_HEAD(&psli->mboxq);
     INIT_LIST_HEAD(&psli->mboxq_cmpl);
     /* Initialize list headers for txq and txcmplq as double linked lists */
     for (i = 0; i < psli->num_rings; i++) {
         pring = &psli->sli3_ring[i];
         pring->ringno = i;
         pring->sli.sli3.next_cmdidx  = 0;
         pring->sli.sli3.local_getidx = 0;
         pring->sli.sli3.cmdidx = 0;
         INIT_LIST_HEAD(&pring->iocb_continueq);
         INIT_LIST_HEAD(&pring->iocb_continue_saveq);
         INIT_LIST_HEAD(&pring->postbufq);
         pring->flag = 0;
         INIT_LIST_HEAD(&pring->txq);
         INIT_LIST_HEAD(&pring->txcmplq);
         spin_lock_init(&pring->ring_lock);
     }
     spin_unlock_irq(&phba->hbalock);
 }
 
 /**
  * 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;
 
     /* Disable softirqs, including timers from obtaining phba->hbalock */
     local_bh_disable();
 
     /* 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);
 
     /* Enable softirqs again, done with phba->hbalock */
     local_bh_enable();
 
     /* 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.
  *
  * lpfc_sli_host_down is called to clean up the resources
  * associated with a vport before destroying virtual
  * port data structures.
  * This function does following operations:
  * - Free discovery resources associated with this virtual
  *   port.
  * - Free iocbs associated with this virtual port in
  *   the txq.
  * - Send abort for all iocb commands associated with this
  *   vport in txcmplq.
  *
  * This function is called with no lock held and always returns 1.
  **/
 int
 lpfc_sli_host_down(struct lpfc_vport *vport)
 {
     LIST_HEAD(completions);
     struct lpfc_hba *phba = vport->phba;
     struct lpfc_sli *psli = &phba->sli;
     struct lpfc_queue *qp = NULL;
     struct lpfc_sli_ring *pring;
     struct lpfc_iocbq *iocb, *next_iocb;
     int i;
     unsigned long flags = 0;
     uint16_t prev_pring_flag;
 
     lpfc_cleanup_discovery_resources(vport);
 
     spin_lock_irqsave(&phba->hbalock, flags);
 
     /*
      * Error everything on the txq since these iocbs
      * have not been given to the FW yet.
      * Also issue ABTS for everything on the txcmplq
      */
     if (phba->sli_rev != LPFC_SLI_REV4) {
         for (i = 0; i < psli->num_rings; i++) {
             pring = &psli->sli3_ring[i];
             prev_pring_flag = pring->flag;
             /* Only slow rings */
             if (pring->ringno == LPFC_ELS_RING) {
                 pring->flag |= LPFC_DEFERRED_RING_EVENT;
                 /* Set the lpfc data pending flag */
                 set_bit(LPFC_DATA_READY, &phba->data_flags);
             }
             list_for_each_entry_safe(iocb, next_iocb,
                          &pring->txq, list) {
                 if (iocb->vport != vport)
                     continue;
                 list_move_tail(&iocb->list, &completions);
             }
             list_for_each_entry_safe(iocb, next_iocb,
                          &pring->txcmplq, list) {
                 if (iocb->vport != vport)
                     continue;
                 lpfc_sli_issue_abort_iotag(phba, pring, iocb,
                                NULL);
             }
             pring->flag = prev_pring_flag;
         }
     } else {
         list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
             pring = qp->pring;
             if (!pring)
                 continue;
             if (pring == phba->sli4_hba.els_wq->pring) {
                 pring->flag |= LPFC_DEFERRED_RING_EVENT;
                 /* Set the lpfc data pending flag */
                 set_bit(LPFC_DATA_READY, &phba->data_flags);
             }
             prev_pring_flag = pring->flag;
             spin_lock(&pring->ring_lock);
             list_for_each_entry_safe(iocb, next_iocb,
                          &pring->txq, list) {
                 if (iocb->vport != vport)
                     continue;
                 list_move_tail(&iocb->list, &completions);
             }
             spin_unlock(&pring->ring_lock);
             list_for_each_entry_safe(iocb, next_iocb,
                          &pring->txcmplq, list) {
                 if (iocb->vport != vport)
                     continue;
                 lpfc_sli_issue_abort_iotag(phba, pring, iocb,
                                NULL);
             }
             pring->flag = prev_pring_flag;
         }
     }
     spin_unlock_irqrestore(&phba->hbalock, flags);
 
     /* Make sure HBA is alive */
     lpfc_issue_hb_tmo(phba);
 
     /* Cancel all the IOCBs from the completions list */
     lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
                   IOERR_SLI_DOWN);
     return 1;
 }
 
 /**
  * lpfc_sli_hba_down - Resource cleanup function for the HBA
  * @phba: Pointer to HBA context object.
  *
  * This function cleans up all iocb, buffers, mailbox commands
  * while shutting down the HBA. This function is called with no
  * lock held and always returns 1.
  * This function does the following to cleanup driver 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
  * - Free mailbox commands in the mailbox queue.
  **/
 int
 lpfc_sli_hba_down(struct lpfc_hba *phba)
 {
     LIST_HEAD(completions);
     struct lpfc_sli *psli = &phba->sli;
     struct lpfc_queue *qp = NULL;
     struct lpfc_sli_ring *pring;
     struct lpfc_dmabuf *buf_ptr;
     unsigned long flags = 0;
     int i;
 
     /* Shutdown the mailbox command sub-system */
     lpfc_sli_mbox_sys_shutdown(phba, LPFC_MBX_WAIT);
 
     lpfc_hba_down_prep(phba);
 
     /* Disable softirqs, including timers from obtaining phba->hbalock */
     local_bh_disable();
 
     lpfc_fabric_abort_hba(phba);
 
     spin_lock_irqsave(&phba->hbalock, flags);
 
     /*
      * Error everything on the txq since these iocbs
      * have not been given to the FW yet.
      */
     if (phba->sli_rev != LPFC_SLI_REV4) {
         for (i = 0; i < psli->num_rings; i++) {
             pring = &psli->sli3_ring[i];
             /* Only slow rings */
             if (pring->ringno == LPFC_ELS_RING) {
                 pring->flag |= LPFC_DEFERRED_RING_EVENT;
                 /* Set the lpfc data pending flag */
                 set_bit(LPFC_DATA_READY, &phba->data_flags);
             }
             list_splice_init(&pring->txq, &completions);
         }
     } else {
         list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
             pring = qp->pring;
             if (!pring)
                 continue;
             spin_lock(&pring->ring_lock);
             list_splice_init(&pring->txq, &completions);
             spin_unlock(&pring->ring_lock);
             if (pring == phba->sli4_hba.els_wq->pring) {
                 pring->flag |= LPFC_DEFERRED_RING_EVENT;
                 /* Set the lpfc data pending flag */
                 set_bit(LPFC_DATA_READY, &phba->data_flags);
             }
         }
     }
     spin_unlock_irqrestore(&phba->hbalock, flags);
 
     /* Cancel all the IOCBs from the completions list */
     lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
                   IOERR_SLI_DOWN);
 
     spin_lock_irqsave(&phba->hbalock, flags);
     list_splice_init(&phba->elsbuf, &completions);
     phba->elsbuf_cnt = 0;
     phba->elsbuf_prev_cnt = 0;
     spin_unlock_irqrestore(&phba->hbalock, flags);
 
     while (!list_empty(&completions)) {
         list_remove_head(&completions, buf_ptr,
             struct lpfc_dmabuf, list);
         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
         kfree(buf_ptr);
     }
 
     /* Enable softirqs again, done with phba->hbalock */
     local_bh_enable();
 
     /* Return any active mbox cmds */
     del_timer_sync(&psli->mbox_tmo);
 
     spin_lock_irqsave(&phba->pport->work_port_lock, flags);
     phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
     spin_unlock_irqrestore(&phba->pport->work_port_lock, flags);
 
     return 1;
 }
 
 /**
  * lpfc_sli_pcimem_bcopy - SLI memory copy function
  * @srcp: Source memory pointer.
  * @destp: Destination memory pointer.
  * @cnt: Number of words required to be copied.
  *
  * This function is used for copying data between driver memory
  * and the SLI memory. This function also changes the endianness
  * of each word if native endianness is different from SLI
  * endianness. This function can be called with or without
  * lock.
  **/
 void
 lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
 {
     uint32_t *src = srcp;
     uint32_t *dest = destp;
     uint32_t ldata;
     int i;
 
     for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
         ldata = *src;
         ldata = le32_to_cpu(ldata);
         *dest = ldata;
         src++;
         dest++;
     }
 }
 
 
 /**
  * lpfc_sli_bemem_bcopy - SLI memory copy function
  * @srcp: Source memory pointer.
  * @destp: Destination memory pointer.
  * @cnt: Number of words required to be copied.
  *
  * This function is used for copying data between a data structure
  * with big endian representation to local endianness.
  * This function can be called with or without lock.
  **/
 void
 lpfc_sli_bemem_bcopy(void *srcp, void *destp, uint32_t cnt)
 {
     uint32_t *src = srcp;
     uint32_t *dest = destp;
     uint32_t ldata;
     int i;
 
     for (i = 0; i < (int)cnt; i += sizeof(uint32_t)) {
         ldata = *src;
         ldata = be32_to_cpu(ldata);
         *dest = ldata;
         src++;
         dest++;
     }
 }
 
 /**
  * lpfc_sli_ringpostbuf_put - Function to add a buffer to postbufq
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  * @mp: Pointer to driver buffer object.
  *
  * This function is called with no lock held.
  * It always return zero after adding the buffer to the postbufq
  * buffer list.
  **/
 int
 lpfc_sli_ringpostbuf_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
              struct lpfc_dmabuf *mp)
 {
     /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
        later */
     spin_lock_irq(&phba->hbalock);
     list_add_tail(&mp->list, &pring->postbufq);
     pring->postbufq_cnt++;
     spin_unlock_irq(&phba->hbalock);
     return 0;
 }
 
 /**
  * lpfc_sli_get_buffer_tag - allocates a tag for a CMD_QUE_XRI64_CX buffer
  * @phba: Pointer to HBA context object.
  *
  * When HBQ is enabled, buffers are searched based on tags. This function
  * allocates a tag for buffer posted using CMD_QUE_XRI64_CX iocb. The
  * tag is bit wise or-ed with QUE_BUFTAG_BIT to make sure that the tag
  * does not conflict with tags of buffer posted for unsolicited events.
  * The function returns the allocated tag. The function is called with
  * no locks held.
  **/
 uint32_t
 lpfc_sli_get_buffer_tag(struct lpfc_hba *phba)
 {
     spin_lock_irq(&phba->hbalock);
     phba->buffer_tag_count++;
     /*
      * Always set the QUE_BUFTAG_BIT to distiguish between
      * a tag assigned by HBQ.
      */
     phba->buffer_tag_count |= QUE_BUFTAG_BIT;
     spin_unlock_irq(&phba->hbalock);
     return phba->buffer_tag_count;
 }
 
 /**
  * lpfc_sli_ring_taggedbuf_get - find HBQ buffer associated with given tag
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  * @tag: Buffer tag.
  *
  * Buffers posted using CMD_QUE_XRI64_CX iocb are in pring->postbufq
  * list. After HBA DMA data to these buffers, CMD_IOCB_RET_XRI64_CX
  * iocb is posted to the response ring with the tag of the buffer.
  * This function searches the pring->postbufq list using the tag
  * to find buffer associated with CMD_IOCB_RET_XRI64_CX
  * iocb. If the buffer is found then lpfc_dmabuf object of the
  * buffer is returned to the caller else NULL is returned.
  * This function is called with no lock held.
  **/
 struct lpfc_dmabuf *
 lpfc_sli_ring_taggedbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
             uint32_t tag)
 {
     struct lpfc_dmabuf *mp, *next_mp;
     struct list_head *slp = &pring->postbufq;
 
     /* Search postbufq, from the beginning, looking for a match on tag */
     spin_lock_irq(&phba->hbalock);
     list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
         if (mp->buffer_tag == tag) {
             list_del_init(&mp->list);
             pring->postbufq_cnt--;
             spin_unlock_irq(&phba->hbalock);
             return mp;
         }
     }
 
     spin_unlock_irq(&phba->hbalock);
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "0402 Cannot find virtual addr for buffer tag on "
             "ring %d Data x%lx x%px x%px x%x\n",
             pring->ringno, (unsigned long) tag,
             slp->next, slp->prev, pring->postbufq_cnt);
 
     return NULL;
 }
 
 /**
  * lpfc_sli_ringpostbuf_get - search buffers for unsolicited CT and ELS events
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  * @phys: DMA address of the buffer.
  *
  * This function searches the buffer list using the dma_address
  * of unsolicited event to find the driver's lpfc_dmabuf object
  * corresponding to the dma_address. The function returns the
  * lpfc_dmabuf object if a buffer is found else it returns NULL.
  * This function is called by the ct and els unsolicited event
  * handlers to get the buffer associated with the unsolicited
  * event.
  *
  * This function is called with no lock held.
  **/
 struct lpfc_dmabuf *
 lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
              dma_addr_t phys)
 {
     struct lpfc_dmabuf *mp, *next_mp;
     struct list_head *slp = &pring->postbufq;
 
     /* Search postbufq, from the beginning, looking for a match on phys */
     spin_lock_irq(&phba->hbalock);
     list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
         if (mp->phys == phys) {
             list_del_init(&mp->list);
             pring->postbufq_cnt--;
             spin_unlock_irq(&phba->hbalock);
             return mp;
         }
     }
 
     spin_unlock_irq(&phba->hbalock);
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "0410 Cannot find virtual addr for mapped buf on "
             "ring %d Data x%llx x%px x%px x%x\n",
             pring->ringno, (unsigned long long)phys,
             slp->next, slp->prev, pring->postbufq_cnt);
     return NULL;
 }
 
 /**
  * lpfc_sli_abort_els_cmpl - Completion handler for the els abort iocbs
  * @phba: Pointer to HBA context object.
  * @cmdiocb: Pointer to driver command iocb object.
  * @rspiocb: Pointer to driver response iocb object.
  *
  * This function is the completion handler for the abort iocbs for
  * ELS commands. This function is called from the ELS ring event
  * handler with no lock held. This function frees memory resources
  * associated with the abort iocb.
  **/
 static void
 lpfc_sli_abort_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
             struct lpfc_iocbq *rspiocb)
 {
     u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
     u32 ulp_word4 = get_job_word4(phba, rspiocb);
     u8 cmnd = get_job_cmnd(phba, cmdiocb);
 
     if (ulp_status) {
         /*
          * Assume that the port already completed and returned, or
          * will return the iocb. Just Log the message.
          */
         if (phba->sli_rev < LPFC_SLI_REV4) {
             if (cmnd == CMD_ABORT_XRI_CX &&
                 ulp_status == IOSTAT_LOCAL_REJECT &&
                 ulp_word4 == IOERR_ABORT_REQUESTED) {
                 goto release_iocb;
             }
         }
 
         lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_SLI,
                 "0327 Cannot abort els iocb x%px "
                 "with io cmd xri %x abort tag : x%x, "
                 "abort status %x abort code %x\n",
                 cmdiocb, get_job_abtsiotag(phba, cmdiocb),
                 (phba->sli_rev == LPFC_SLI_REV4) ?
                 get_wqe_reqtag(cmdiocb) :
                 cmdiocb->iocb.un.acxri.abortContextTag,
                 ulp_status, ulp_word4);
 
     }
 release_iocb:
     lpfc_sli_release_iocbq(phba, cmdiocb);
     return;
 }
 
 /**
  * lpfc_ignore_els_cmpl - Completion handler for aborted ELS command
  * @phba: Pointer to HBA context object.
  * @cmdiocb: Pointer to driver command iocb object.
  * @rspiocb: Pointer to driver response iocb object.
  *
  * The function is called from SLI ring event handler with no
  * lock held. This function is the completion handler for ELS commands
  * which are aborted. The function frees memory resources used for
  * the aborted ELS commands.
  **/
 void
 lpfc_ignore_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
              struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
     IOCB_t *irsp;
     LPFC_MBOXQ_t *mbox;
     u32 ulp_command, ulp_status, ulp_word4, iotag;
 
     ulp_command = get_job_cmnd(phba, cmdiocb);
     ulp_status = get_job_ulpstatus(phba, rspiocb);
     ulp_word4 = get_job_word4(phba, rspiocb);
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         iotag = get_wqe_reqtag(cmdiocb);
     } else {
         irsp = &rspiocb->iocb;
         iotag = irsp->ulpIoTag;
 
         /* It is possible a PLOGI_RJT for NPIV ports to get aborted.
          * The MBX_REG_LOGIN64 mbox command is freed back to the
          * mbox_mem_pool here.
          */
         if (cmdiocb->context_un.mbox) {
             mbox = cmdiocb->context_un.mbox;
             lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
             cmdiocb->context_un.mbox = NULL;
         }
     }
 
     /* ELS cmd tag <ulpIoTag> completes */
     lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
             "0139 Ignoring ELS cmd code x%x completion Data: "
             "x%x x%x x%x x%px\n",
             ulp_command, ulp_status, ulp_word4, iotag,
             cmdiocb->ndlp);
     /*
      * Deref the ndlp after free_iocb. sli_release_iocb will access the ndlp
      * if exchange is busy.
      */
     if (ulp_command == CMD_GEN_REQUEST64_CR)
         lpfc_ct_free_iocb(phba, cmdiocb);
     else
         lpfc_els_free_iocb(phba, cmdiocb);
 
     lpfc_nlp_put(ndlp);
 }
 
 /**
  * lpfc_sli_issue_abort_iotag - Abort function for a command iocb
  * @phba: Pointer to HBA context object.
  * @pring: Pointer to driver SLI ring object.
  * @cmdiocb: Pointer to driver command iocb object.
  * @cmpl: completion function.
  *
  * This function issues an abort iocb for the provided command iocb. In case
  * of unloading, the abort iocb will not be issued to commands on the ELS
  * ring. Instead, the callback function shall be changed to those commands
  * so that nothing happens when them finishes. This function is called with
  * hbalock held andno ring_lock held (SLI4). The function returns IOCB_SUCCESS
  * when the command iocb is an abort request.
  *
  **/
 int
 lpfc_sli_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                struct lpfc_iocbq *cmdiocb, void *cmpl)
 {
     struct lpfc_vport *vport = cmdiocb->vport;
     struct lpfc_iocbq *abtsiocbp;
     int retval = IOCB_ERROR;
     unsigned long iflags;
     struct lpfc_nodelist *ndlp = NULL;
     u32 ulp_command = get_job_cmnd(phba, cmdiocb);
     u16 ulp_context, iotag;
     bool ia;
 
     /*
      * There are certain command types we don't want to abort.  And we
      * don't want to abort commands that are already in the process of
      * being aborted.
      */
     if (ulp_command == CMD_ABORT_XRI_WQE ||
         ulp_command == CMD_ABORT_XRI_CN ||
         ulp_command == CMD_CLOSE_XRI_CN ||
         cmdiocb->cmd_flag & LPFC_DRIVER_ABORTED)
         return IOCB_ABORTING;
 
     if (!pring) {
         if (cmdiocb->cmd_flag & LPFC_IO_FABRIC)
             cmdiocb->fabric_cmd_cmpl = lpfc_ignore_els_cmpl;
         else
             cmdiocb->cmd_cmpl = lpfc_ignore_els_cmpl;
         return retval;
     }
 
     /*
      * If we're unloading, don't abort iocb on the ELS ring, but change
      * the callback so that nothing happens when it finishes.
      */
     if ((vport->load_flag & FC_UNLOADING) &&
         pring->ringno == LPFC_ELS_RING) {
         if (cmdiocb->cmd_flag & LPFC_IO_FABRIC)
             cmdiocb->fabric_cmd_cmpl = lpfc_ignore_els_cmpl;
         else
             cmdiocb->cmd_cmpl = lpfc_ignore_els_cmpl;
         return retval;
     }
 
     /* issue ABTS for this IOCB based on iotag */
     abtsiocbp = __lpfc_sli_get_iocbq(phba);
     if (abtsiocbp == NULL)
         return IOCB_NORESOURCE;
 
     /* This signals the response to set the correct status
      * before calling the completion handler
      */
     cmdiocb->cmd_flag |= LPFC_DRIVER_ABORTED;
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         ulp_context = cmdiocb->sli4_xritag;
         iotag = abtsiocbp->iotag;
     } else {
         iotag = cmdiocb->iocb.ulpIoTag;
         if (pring->ringno == LPFC_ELS_RING) {
             ndlp = cmdiocb->ndlp;
             ulp_context = ndlp->nlp_rpi;
         } else {
             ulp_context = cmdiocb->iocb.ulpContext;
         }
     }
 
     if (phba->link_state < LPFC_LINK_UP ||
         (phba->sli_rev == LPFC_SLI_REV4 &&
          phba->sli4_hba.link_state.status == LPFC_FC_LA_TYPE_LINK_DOWN) ||
         (phba->link_flag & LS_EXTERNAL_LOOPBACK))
         ia = true;
     else
         ia = false;
 
     lpfc_sli_prep_abort_xri(phba, abtsiocbp, ulp_context, iotag,
                 cmdiocb->iocb.ulpClass,
                 LPFC_WQE_CQ_ID_DEFAULT, ia, false);
 
     abtsiocbp->vport = vport;
 
     /* ABTS WQE must go to the same WQ as the WQE to be aborted */
     abtsiocbp->hba_wqidx = cmdiocb->hba_wqidx;
     if (cmdiocb->cmd_flag & LPFC_IO_FCP)
         abtsiocbp->cmd_flag |= (LPFC_IO_FCP | LPFC_USE_FCPWQIDX);
 
     if (cmdiocb->cmd_flag & LPFC_IO_FOF)
         abtsiocbp->cmd_flag |= LPFC_IO_FOF;
 
     if (cmpl)
         abtsiocbp->cmd_cmpl = cmpl;
     else
         abtsiocbp->cmd_cmpl = lpfc_sli_abort_els_cmpl;
     abtsiocbp->vport = vport;
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         pring = lpfc_sli4_calc_ring(phba, abtsiocbp);
         if (unlikely(pring == NULL))
             goto abort_iotag_exit;
         /* Note: both hbalock and ring_lock need to be set here */
         spin_lock_irqsave(&pring->ring_lock, iflags);
         retval = __lpfc_sli_issue_iocb(phba, pring->ringno,
             abtsiocbp, 0);
         spin_unlock_irqrestore(&pring->ring_lock, iflags);
     } else {
         retval = __lpfc_sli_issue_iocb(phba, pring->ringno,
             abtsiocbp, 0);
     }
 
 abort_iotag_exit:
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
              "0339 Abort IO XRI x%x, Original iotag x%x, "
              "abort tag x%x Cmdjob : x%px Abortjob : x%px "
              "retval x%x\n",
              ulp_context, (phba->sli_rev == LPFC_SLI_REV4) ?
              cmdiocb->iotag : iotag, iotag, cmdiocb, abtsiocbp,
              retval);
     if (retval) {
         cmdiocb->cmd_flag &= ~LPFC_DRIVER_ABORTED;
         __lpfc_sli_release_iocbq(phba, abtsiocbp);
     }
 
     /*
      * Caller to this routine should check for IOCB_ERROR
      * and handle it properly.  This routine no longer removes
      * iocb off txcmplq and call compl in case of IOCB_ERROR.
      */
     return retval;
 }
 
 /**
  * lpfc_sli_hba_iocb_abort - Abort all iocbs to an hba.
  * @phba: pointer to lpfc HBA data structure.
  *
  * This routine will abort all pending and outstanding iocbs to an HBA.
  **/
 void
 lpfc_sli_hba_iocb_abort(struct lpfc_hba *phba)
 {
     struct lpfc_sli *psli = &phba->sli;
     struct lpfc_sli_ring *pring;
     struct lpfc_queue *qp = NULL;
     int i;
 
     if (phba->sli_rev != LPFC_SLI_REV4) {
         for (i = 0; i < psli->num_rings; i++) {
             pring = &psli->sli3_ring[i];
             lpfc_sli_abort_iocb_ring(phba, pring);
         }
         return;
     }
     list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
         pring = qp->pring;
         if (!pring)
             continue;
         lpfc_sli_abort_iocb_ring(phba, pring);
     }
 }
 
 /**
  * lpfc_sli_validate_fcp_iocb_for_abort - filter iocbs appropriate for FCP aborts
  * @iocbq: Pointer to iocb object.
  * @vport: Pointer to driver virtual port object.
  *
  * This function acts as an iocb filter for functions which abort FCP iocbs.
  *
  * Return values
  * -ENODEV, if a null iocb or vport ptr is encountered
  * -EINVAL, if the iocb is not an FCP I/O, not on the TX cmpl queue, premarked as
  *          driver already started the abort process, or is an abort iocb itself
  * 0, passes criteria for aborting the FCP I/O iocb
  **/
 static int
 lpfc_sli_validate_fcp_iocb_for_abort(struct lpfc_iocbq *iocbq,
                      struct lpfc_vport *vport)
 {
     u8 ulp_command;
 
     /* No null ptr vports */
     if (!iocbq || iocbq->vport != vport)
         return -ENODEV;
 
     /* iocb must be for FCP IO, already exists on the TX cmpl queue,
      * can't be premarked as driver aborted, nor be an ABORT iocb itself
      */
     ulp_command = get_job_cmnd(vport->phba, iocbq);
     if (!(iocbq->cmd_flag & LPFC_IO_FCP) ||
         !(iocbq->cmd_flag & LPFC_IO_ON_TXCMPLQ) ||
         (iocbq->cmd_flag & LPFC_DRIVER_ABORTED) ||
         (ulp_command == CMD_ABORT_XRI_CN ||
          ulp_command == CMD_CLOSE_XRI_CN ||
          ulp_command == CMD_ABORT_XRI_WQE))
         return -EINVAL;
 
     return 0;
 }
 
 /**
  * lpfc_sli_validate_fcp_iocb - validate commands associated with a SCSI target
  * @iocbq: Pointer to driver iocb object.
  * @vport: Pointer to driver virtual port object.
  * @tgt_id: SCSI ID of the target.
  * @lun_id: LUN ID of the scsi device.
  * @ctx_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST
  *
  * This function acts as an iocb filter for validating a lun/SCSI target/SCSI
  * host.
  *
  * It will return
  * 0 if the filtering criteria is met for the given iocb and will return
  * 1 if the filtering criteria is not met.
  * If ctx_cmd == LPFC_CTX_LUN, the function returns 0 only if the
  * given iocb is for the SCSI device specified by vport, tgt_id and
  * lun_id parameter.
  * If ctx_cmd == LPFC_CTX_TGT,  the function returns 0 only if the
  * given iocb is for the SCSI target specified by vport and tgt_id
  * parameters.
  * If ctx_cmd == LPFC_CTX_HOST, the function returns 0 only if the
  * given iocb is for the SCSI host associated with the given vport.
  * This function is called with no locks held.
  **/
 static int
 lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, struct lpfc_vport *vport,
                uint16_t tgt_id, uint64_t lun_id,
                lpfc_ctx_cmd ctx_cmd)
 {
     struct lpfc_io_buf *lpfc_cmd;
     int rc = 1;
 
     lpfc_cmd = container_of(iocbq, struct lpfc_io_buf, cur_iocbq);
 
     if (lpfc_cmd->pCmd == NULL)
         return rc;
 
     switch (ctx_cmd) {
     case LPFC_CTX_LUN:
         if ((lpfc_cmd->rdata) && (lpfc_cmd->rdata->pnode) &&
             (lpfc_cmd->rdata->pnode->nlp_sid == tgt_id) &&
             (scsilun_to_int(&lpfc_cmd->fcp_cmnd->fcp_lun) == lun_id))
             rc = 0;
         break;
     case LPFC_CTX_TGT:
         if ((lpfc_cmd->rdata) && (lpfc_cmd->rdata->pnode) &&
             (lpfc_cmd->rdata->pnode->nlp_sid == tgt_id))
             rc = 0;
         break;
     case LPFC_CTX_HOST:
         rc = 0;
         break;
     default:
         printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
             __func__, ctx_cmd);
         break;
     }
 
     return rc;
 }
 
 /**
  * lpfc_sli_sum_iocb - Function to count the number of FCP iocbs pending
  * @vport: Pointer to virtual port.
  * @tgt_id: SCSI ID of the target.
  * @lun_id: LUN ID of the scsi device.
  * @ctx_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST.
  *
  * This function returns number of FCP commands pending for the vport.
  * When ctx_cmd == LPFC_CTX_LUN, the function returns number of FCP
  * commands pending on the vport associated with SCSI device specified
  * by tgt_id and lun_id parameters.
  * When ctx_cmd == LPFC_CTX_TGT, the function returns number of FCP
  * commands pending on the vport associated with SCSI target specified
  * by tgt_id parameter.
  * When ctx_cmd == LPFC_CTX_HOST, the function returns number of FCP
  * commands pending on the vport.
  * This function returns the number of iocbs which satisfy the filter.
  * This function is called without any lock held.
  **/
 int
 lpfc_sli_sum_iocb(struct lpfc_vport *vport, uint16_t tgt_id, uint64_t lun_id,
           lpfc_ctx_cmd ctx_cmd)
 {
     struct lpfc_hba *phba = vport->phba;
     struct lpfc_iocbq *iocbq;
     int sum, i;
     unsigned long iflags;
     u8 ulp_command;
 
     spin_lock_irqsave(&phba->hbalock, iflags);
     for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) {
         iocbq = phba->sli.iocbq_lookup[i];
 
         if (!iocbq || iocbq->vport != vport)
             continue;
         if (!(iocbq->cmd_flag & LPFC_IO_FCP) ||
             !(iocbq->cmd_flag & LPFC_IO_ON_TXCMPLQ))
             continue;
 
         /* Include counting outstanding aborts */
         ulp_command = get_job_cmnd(phba, iocbq);
         if (ulp_command == CMD_ABORT_XRI_CN ||
             ulp_command == CMD_CLOSE_XRI_CN ||
             ulp_command == CMD_ABORT_XRI_WQE) {
             sum++;
             continue;
         }
 
         if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id,
                            ctx_cmd) == 0)
             sum++;
     }
     spin_unlock_irqrestore(&phba->hbalock, iflags);
 
     return sum;
 }
 
 /**
  * lpfc_sli_abort_fcp_cmpl - Completion handler function for aborted FCP IOCBs
  * @phba: Pointer to HBA context object
  * @cmdiocb: Pointer to command iocb object.
  * @rspiocb: Pointer to response iocb object.
  *
  * This function is called when an aborted FCP iocb completes. This
  * function is called by the ring event handler with no lock held.
  * This function frees the iocb.
  **/
 void
 lpfc_sli_abort_fcp_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
             struct lpfc_iocbq *rspiocb)
 {
     lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
             "3096 ABORT_XRI_CX completing on rpi x%x "
             "original iotag x%x, abort cmd iotag x%x "
             "status 0x%x, reason 0x%x\n",
             (phba->sli_rev == LPFC_SLI_REV4) ?
             cmdiocb->sli4_xritag :
             cmdiocb->iocb.un.acxri.abortContextTag,
             get_job_abtsiotag(phba, cmdiocb),
             cmdiocb->iotag, get_job_ulpstatus(phba, rspiocb),
             get_job_word4(phba, rspiocb));
     lpfc_sli_release_iocbq(phba, cmdiocb);
     return;
 }
 
 /**
  * lpfc_sli_abort_iocb - issue abort for all commands on a host/target/LUN
  * @vport: Pointer to virtual port.
  * @tgt_id: SCSI ID of the target.
  * @lun_id: LUN ID of the scsi device.
  * @abort_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST.
  *
  * This function sends an abort command for every SCSI command
  * associated with the given virtual port pending on the ring
  * filtered by lpfc_sli_validate_fcp_iocb_for_abort and then
  * lpfc_sli_validate_fcp_iocb function.  The ordering for validation before
  * submitting abort iocbs must be lpfc_sli_validate_fcp_iocb_for_abort
  * followed by lpfc_sli_validate_fcp_iocb.
  *
  * When abort_cmd == LPFC_CTX_LUN, the function sends abort only to the
  * FCP iocbs associated with lun specified by tgt_id and lun_id
  * parameters
  * When abort_cmd == LPFC_CTX_TGT, the function sends abort only to the
  * FCP iocbs associated with SCSI target specified by tgt_id parameter.
  * When abort_cmd == LPFC_CTX_HOST, the function sends abort to all
  * FCP iocbs associated with virtual port.
  * The pring used for SLI3 is sli3_ring[LPFC_FCP_RING], for SLI4
  * lpfc_sli4_calc_ring is used.
  * This function returns number of iocbs it failed to abort.
  * This function is called with no locks held.
  **/
 int
 lpfc_sli_abort_iocb(struct lpfc_vport *vport, u16 tgt_id, u64 lun_id,
             lpfc_ctx_cmd abort_cmd)
 {
     struct lpfc_hba *phba = vport->phba;
     struct lpfc_sli_ring *pring = NULL;
     struct lpfc_iocbq *iocbq;
     int errcnt = 0, ret_val = 0;
     unsigned long iflags;
     int i;
 
     /* all I/Os are in process of being flushed */
     if (phba->hba_flag & HBA_IOQ_FLUSH)
         return errcnt;
 
     for (i = 1; i <= phba->sli.last_iotag; i++) {
         iocbq = phba->sli.iocbq_lookup[i];
 
         if (lpfc_sli_validate_fcp_iocb_for_abort(iocbq, vport))
             continue;
 
         if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id,
                            abort_cmd) != 0)
             continue;
 
         spin_lock_irqsave(&phba->hbalock, iflags);
         if (phba->sli_rev == LPFC_SLI_REV3) {
             pring = &phba->sli.sli3_ring[LPFC_FCP_RING];
         } else if (phba->sli_rev == LPFC_SLI_REV4) {
             pring = lpfc_sli4_calc_ring(phba, iocbq);
         }
         ret_val = lpfc_sli_issue_abort_iotag(phba, pring, iocbq,
                              lpfc_sli_abort_fcp_cmpl);
         spin_unlock_irqrestore(&phba->hbalock, iflags);
         if (ret_val != IOCB_SUCCESS)
             errcnt++;
     }
 
     return errcnt;
 }
 
 /**
  * lpfc_sli_abort_taskmgmt - issue abort for all commands on a host/target/LUN
  * @vport: Pointer to virtual port.
  * @pring: Pointer to driver SLI ring object.
  * @tgt_id: SCSI ID of the target.
  * @lun_id: LUN ID of the scsi device.
  * @cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST.
  *
  * This function sends an abort command for every SCSI command
  * associated with the given virtual port pending on the ring
  * filtered by lpfc_sli_validate_fcp_iocb_for_abort and then
  * lpfc_sli_validate_fcp_iocb function.  The ordering for validation before
  * submitting abort iocbs must be lpfc_sli_validate_fcp_iocb_for_abort
  * followed by lpfc_sli_validate_fcp_iocb.
  *
  * When taskmgmt_cmd == LPFC_CTX_LUN, the function sends abort only to the
  * FCP iocbs associated with lun specified by tgt_id and lun_id
  * parameters
  * When taskmgmt_cmd == LPFC_CTX_TGT, the function sends abort only to the
  * FCP iocbs associated with SCSI target specified by tgt_id parameter.
  * When taskmgmt_cmd == LPFC_CTX_HOST, the function sends abort to all
  * FCP iocbs associated with virtual port.
  * This function returns number of iocbs it aborted .
  * This function is called with no locks held right after a taskmgmt
  * command is sent.
  **/
 int
 lpfc_sli_abort_taskmgmt(struct lpfc_vport *vport, struct lpfc_sli_ring *pring,
             uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd cmd)
 {
     struct lpfc_hba *phba = vport->phba;
     struct lpfc_io_buf *lpfc_cmd;
     struct lpfc_iocbq *abtsiocbq;
     struct lpfc_nodelist *ndlp = NULL;
     struct lpfc_iocbq *iocbq;
     int sum, i, ret_val;
     unsigned long iflags;
     struct lpfc_sli_ring *pring_s4 = NULL;
     u16 ulp_context, iotag, cqid = LPFC_WQE_CQ_ID_DEFAULT;
     bool ia;
 
     spin_lock_irqsave(&phba->hbalock, iflags);
 
     /* all I/Os are in process of being flushed */
     if (phba->hba_flag & HBA_IOQ_FLUSH) {
         spin_unlock_irqrestore(&phba->hbalock, iflags);
         return 0;
     }
     sum = 0;
 
     for (i = 1; i <= phba->sli.last_iotag; i++) {
         iocbq = phba->sli.iocbq_lookup[i];
 
         if (lpfc_sli_validate_fcp_iocb_for_abort(iocbq, vport))
             continue;
 
         if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id,
                            cmd) != 0)
             continue;
 
         /* Guard against IO completion being called at same time */
         lpfc_cmd = container_of(iocbq, struct lpfc_io_buf, cur_iocbq);
         spin_lock(&lpfc_cmd->buf_lock);
 
         if (!lpfc_cmd->pCmd) {
             spin_unlock(&lpfc_cmd->buf_lock);
             continue;
         }
 
         if (phba->sli_rev == LPFC_SLI_REV4) {
             pring_s4 =
                 phba->sli4_hba.hdwq[iocbq->hba_wqidx].io_wq->pring;
             if (!pring_s4) {
                 spin_unlock(&lpfc_cmd->buf_lock);
                 continue;
             }
             /* Note: both hbalock and ring_lock must be set here */
             spin_lock(&pring_s4->ring_lock);
         }
 
         /*
          * If the iocbq is already being aborted, don't take a second
          * action, but do count it.
          */
         if ((iocbq->cmd_flag & LPFC_DRIVER_ABORTED) ||
             !(iocbq->cmd_flag & LPFC_IO_ON_TXCMPLQ)) {
             if (phba->sli_rev == LPFC_SLI_REV4)
                 spin_unlock(&pring_s4->ring_lock);
             spin_unlock(&lpfc_cmd->buf_lock);
             continue;
         }
 
         /* issue ABTS for this IOCB based on iotag */
         abtsiocbq = __lpfc_sli_get_iocbq(phba);
         if (!abtsiocbq) {
             if (phba->sli_rev == LPFC_SLI_REV4)
                 spin_unlock(&pring_s4->ring_lock);
             spin_unlock(&lpfc_cmd->buf_lock);
             continue;
         }
 
         if (phba->sli_rev == LPFC_SLI_REV4) {
             iotag = abtsiocbq->iotag;
             ulp_context = iocbq->sli4_xritag;
             cqid = lpfc_cmd->hdwq->io_cq_map;
         } else {
             iotag = iocbq->iocb.ulpIoTag;
             if (pring->ringno == LPFC_ELS_RING) {
                 ndlp = iocbq->ndlp;
                 ulp_context = ndlp->nlp_rpi;
             } else {
                 ulp_context = iocbq->iocb.ulpContext;
             }
         }
 
         ndlp = lpfc_cmd->rdata->pnode;
 
         if (lpfc_is_link_up(phba) &&
             (ndlp && ndlp->nlp_state == NLP_STE_MAPPED_NODE) &&
             !(phba->link_flag & LS_EXTERNAL_LOOPBACK))
             ia = false;
         else
             ia = true;
 
         lpfc_sli_prep_abort_xri(phba, abtsiocbq, ulp_context, iotag,
                     iocbq->iocb.ulpClass, cqid,
                     ia, false);
 
         abtsiocbq->vport = vport;
 
         /* ABTS WQE must go to the same WQ as the WQE to be aborted */
         abtsiocbq->hba_wqidx = iocbq->hba_wqidx;
         if (iocbq->cmd_flag & LPFC_IO_FCP)
             abtsiocbq->cmd_flag |= LPFC_USE_FCPWQIDX;
         if (iocbq->cmd_flag & LPFC_IO_FOF)
             abtsiocbq->cmd_flag |= LPFC_IO_FOF;
 
         /* Setup callback routine and issue the command. */
         abtsiocbq->cmd_cmpl = lpfc_sli_abort_fcp_cmpl;
 
         /*
          * Indicate the IO is being aborted by the driver and set
          * the caller's flag into the aborted IO.
          */
         iocbq->cmd_flag |= LPFC_DRIVER_ABORTED;
 
         if (phba->sli_rev == LPFC_SLI_REV4) {
             ret_val = __lpfc_sli_issue_iocb(phba, pring_s4->ringno,
                             abtsiocbq, 0);
             spin_unlock(&pring_s4->ring_lock);
         } else {
             ret_val = __lpfc_sli_issue_iocb(phba, pring->ringno,
                             abtsiocbq, 0);
         }
 
         spin_unlock(&lpfc_cmd->buf_lock);
 
         if (ret_val == IOCB_ERROR)
             __lpfc_sli_release_iocbq(phba, abtsiocbq);
         else
             sum++;
     }
     spin_unlock_irqrestore(&phba->hbalock, iflags);
     return sum;
 }
 
 /**
  * lpfc_sli_wake_iocb_wait - lpfc_sli_issue_iocb_wait's completion handler
  * @phba: Pointer to HBA context object.
  * @cmdiocbq: Pointer to command iocb.
  * @rspiocbq: Pointer to response iocb.
  *
  * This function is the completion handler for iocbs issued using
  * lpfc_sli_issue_iocb_wait function. This function is called by the
  * ring event handler function without any lock held. This function
  * can be called from both worker thread context and interrupt
  * context. This function also can be called from other thread which
  * cleans up the SLI layer objects.
  * This function copy the contents of the response iocb to the
  * response iocb memory object provided by the caller of
  * lpfc_sli_issue_iocb_wait and then wakes up the thread which
  * sleeps for the iocb completion.
  **/
 static void
 lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
             struct lpfc_iocbq *cmdiocbq,
             struct lpfc_iocbq *rspiocbq)
 {
     wait_queue_head_t *pdone_q;
     unsigned long iflags;
     struct lpfc_io_buf *lpfc_cmd;
     size_t offset = offsetof(struct lpfc_iocbq, wqe);
 
     spin_lock_irqsave(&phba->hbalock, iflags);
     if (cmdiocbq->cmd_flag & LPFC_IO_WAKE_TMO) {
 
         /*
          * A time out has occurred for the iocb.  If a time out
          * completion handler has been supplied, call it.  Otherwise,
          * just free the iocbq.
          */
 
         spin_unlock_irqrestore(&phba->hbalock, iflags);
         cmdiocbq->cmd_cmpl = cmdiocbq->wait_cmd_cmpl;
         cmdiocbq->wait_cmd_cmpl = NULL;
         if (cmdiocbq->cmd_cmpl)
             cmdiocbq->cmd_cmpl(phba, cmdiocbq, NULL);
         else
             lpfc_sli_release_iocbq(phba, cmdiocbq);
         return;
     }
 
     /* Copy the contents of the local rspiocb into the caller's buffer. */
     cmdiocbq->cmd_flag |= LPFC_IO_WAKE;
     if (cmdiocbq->rsp_iocb && rspiocbq)
         memcpy((char *)cmdiocbq->rsp_iocb + offset,
                (char *)rspiocbq + offset, sizeof(*rspiocbq) - offset);
 
     /* Set the exchange busy flag for task management commands */
     if ((cmdiocbq->cmd_flag & LPFC_IO_FCP) &&
         !(cmdiocbq->cmd_flag & LPFC_IO_LIBDFC)) {
         lpfc_cmd = container_of(cmdiocbq, struct lpfc_io_buf,
                     cur_iocbq);
         if (rspiocbq && (rspiocbq->cmd_flag & LPFC_EXCHANGE_BUSY))
             lpfc_cmd->flags |= LPFC_SBUF_XBUSY;
         else
             lpfc_cmd->flags &= ~LPFC_SBUF_XBUSY;
     }
 
     pdone_q = cmdiocbq->context_un.wait_queue;
     if (pdone_q)
         wake_up(pdone_q);
     spin_unlock_irqrestore(&phba->hbalock, iflags);
     return;
 }
 
 /**
  * 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 cmd_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->cmd_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..
  * @ring_number: Ring number
  * @piocb: Pointer to command iocb.
  * @prspiocbq: Pointer to response iocb.
  * @timeout: Timeout in number of seconds.
  *
  * This function issues the iocb to firmware and waits for the
  * iocb to complete. The cmd_cmpl field of the shall be used
  * to handle iocbs which time out. If the field is NULL, the
  * function shall free the iocbq structure.  If more clean up is
  * needed, the caller is expected to provide a completion function
  * that will provide the needed clean up.  If the iocb command is
  * not completed within timeout seconds, the function will either
  * free the iocbq structure (if cmd_cmpl == NULL) or execute the
  * completion function set in the cmd_cmpl field and then return
  * a status of IOCB_TIMEDOUT.  The caller should not free the iocb
  * resources if this function returns IOCB_TIMEDOUT.
  * The function waits for the iocb completion using an
  * non-interruptible wait.
  * This function will sleep while waiting for iocb completion.
  * So, this function should not be called from any context which
  * does not allow sleeping. Due to the same reason, this function
  * cannot be called with interrupt disabled.
  * This function assumes that the iocb completions occur while
  * this function sleep. So, this function cannot be called from
  * the thread which process iocb completion for this ring.
  * This function clears the cmd_flag of the iocb object before
  * issuing the iocb and the iocb completion handler sets this
  * flag and wakes this thread when the iocb completes.
  * The contents of the response iocb will be copied to prspiocbq
  * by the completion handler when the command completes.
  * This function returns IOCB_SUCCESS when success.
  * This function is called with no lock held.
  **/
 int
 lpfc_sli_issue_iocb_wait(struct lpfc_hba *phba,
              uint32_t ring_number,
              struct lpfc_iocbq *piocb,
              struct lpfc_iocbq *prspiocbq,
              uint32_t timeout)
 {
     DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
     long timeleft, timeout_req = 0;
     int retval = IOCB_SUCCESS;
     uint32_t creg_val;
     struct lpfc_iocbq *iocb;
     int txq_cnt = 0;
     int txcmplq_cnt = 0;
     struct lpfc_sli_ring *pring;
     unsigned long iflags;
     bool iocb_completed = true;
 
     if (phba->sli_rev >= LPFC_SLI_REV4) {
         lpfc_sli_prep_wqe(phba, piocb);
 
         pring = lpfc_sli4_calc_ring(phba, piocb);
     } else
         pring = &phba->sli.sli3_ring[ring_number];
     /*
      * If the caller has provided a response iocbq buffer, then rsp_iocb
      * is NULL or its an error.
      */
     if (prspiocbq) {
         if (piocb->rsp_iocb)
             return IOCB_ERROR;
         piocb->rsp_iocb = prspiocbq;
     }
 
     piocb->wait_cmd_cmpl = piocb->cmd_cmpl;
     piocb->cmd_cmpl = lpfc_sli_wake_iocb_wait;
     piocb->context_un.wait_queue = &done_q;
     piocb->cmd_flag &= ~(LPFC_IO_WAKE | LPFC_IO_WAKE_TMO);
 
     if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
         if (lpfc_readl(phba->HCregaddr, &creg_val))
             return IOCB_ERROR;
         creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
         writel(creg_val, phba->HCregaddr);
         readl(phba->HCregaddr); /* flush */
     }
 
     retval = lpfc_sli_issue_iocb(phba, ring_number, piocb,
                      SLI_IOCB_RET_IOCB);
     if (retval == IOCB_SUCCESS) {
         timeout_req = msecs_to_jiffies(timeout * 1000);
         timeleft = wait_event_timeout(done_q,
                 lpfc_chk_iocb_flg(phba, piocb, LPFC_IO_WAKE),
                 timeout_req);
         spin_lock_irqsave(&phba->hbalock, iflags);
         if (!(piocb->cmd_flag & LPFC_IO_WAKE)) {
 
             /*
              * IOCB timed out.  Inform the wake iocb wait
              * completion function and set local status
              */
 
             iocb_completed = false;
             piocb->cmd_flag |= LPFC_IO_WAKE_TMO;
         }
         spin_unlock_irqrestore(&phba->hbalock, iflags);
         if (iocb_completed) {
             lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                     "0331 IOCB wake signaled\n");
             /* Note: we are not indicating if the IOCB has a success
              * status or not - that's for the caller to check.
              * IOCB_SUCCESS means just that the command was sent and
              * completed. Not that it completed successfully.
              * */
         } else if (timeleft == 0) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0338 IOCB wait timeout error - no "
                     "wake response Data x%x\n", timeout);
             retval = IOCB_TIMEDOUT;
         } else {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0330 IOCB wake NOT set, "
                     "Data x%x x%lx\n",
                     timeout, (timeleft / jiffies));
             retval = IOCB_TIMEDOUT;
         }
     } else if (retval == IOCB_BUSY) {
         if (phba->cfg_log_verbose & LOG_SLI) {
             list_for_each_entry(iocb, &pring->txq, list) {
                 txq_cnt++;
             }
             list_for_each_entry(iocb, &pring->txcmplq, list) {
                 txcmplq_cnt++;
             }
             lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "2818 Max IOCBs %d txq cnt %d txcmplq cnt %d\n",
                 phba->iocb_cnt, txq_cnt, txcmplq_cnt);
         }
         return retval;
     } else {
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "0332 IOCB wait issue failed, Data x%x\n",
                 retval);
         retval = IOCB_ERROR;
     }
 
     if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
         if (lpfc_readl(phba->HCregaddr, &creg_val))
             return IOCB_ERROR;
         creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
         writel(creg_val, phba->HCregaddr);
         readl(phba->HCregaddr); /* flush */
     }
 
     if (prspiocbq)
         piocb->rsp_iocb = NULL;
 
     piocb->context_un.wait_queue = NULL;
     piocb->cmd_cmpl = NULL;
     return retval;
 }
 
 /**
  * lpfc_sli_issue_mbox_wait - Synchronous function to issue mailbox
  * @phba: Pointer to HBA context object.
  * @pmboxq: Pointer to driver mailbox object.
  * @timeout: Timeout in number of seconds.
  *
  * This function issues the mailbox to firmware and waits for the
  * mailbox command to complete. If the mailbox command is not
  * completed within timeout seconds, it returns MBX_TIMEOUT.
  * The function waits for the mailbox completion using an
  * interruptible wait. If the thread is woken up due to a
  * signal, MBX_TIMEOUT error is returned to the caller. Caller
  * should not free the mailbox resources, if this function returns
  * MBX_TIMEOUT.
  * This function will sleep while waiting for mailbox completion.
  * So, this function should not be called from any context which
  * does not allow sleeping. Due to the same reason, this function
  * cannot be called with interrupt disabled.
  * This function assumes that the mailbox completion occurs while
  * this function sleep. So, this function cannot be called from
  * the worker thread which processes mailbox completion.
  * This function is called in the context of HBA management
  * applications.
  * This function returns MBX_SUCCESS when successful.
  * This function is called with no lock held.
  **/
 int
 lpfc_sli_issue_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq,
              uint32_t timeout)
 {
     struct completion mbox_done;
     int retval;
     unsigned long flag;
 
     pmboxq->mbox_flag &= ~LPFC_MBX_WAKE;
     /* setup wake call as IOCB callback */
     pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
 
     /* setup context3 field to pass wait_queue pointer to wake function  */
     init_completion(&mbox_done);
     pmboxq->context3 = &mbox_done;
     /* now issue the command */
     retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
     if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
         wait_for_completion_timeout(&mbox_done,
                         msecs_to_jiffies(timeout * 1000));
 
         spin_lock_irqsave(&phba->hbalock, flag);
         pmboxq->context3 = NULL;
         /*
          * if LPFC_MBX_WAKE flag is set the mailbox is completed
          * else do not free the resources.
          */
         if (pmboxq->mbox_flag & LPFC_MBX_WAKE) {
             retval = MBX_SUCCESS;
         } else {
             retval = MBX_TIMEOUT;
             pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
         }
         spin_unlock_irqrestore(&phba->hbalock, flag);
     }
     return retval;
 }
 
 /**
  * lpfc_sli_mbox_sys_shutdown - shutdown mailbox command sub-system
  * @phba: Pointer to HBA context.
  * @mbx_action: Mailbox shutdown options.
  *
  * 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.
  **/
 void
 lpfc_sli_mbox_sys_shutdown(struct lpfc_hba *phba, int mbx_action)
 {
     struct lpfc_sli *psli = &phba->sli;
     unsigned long timeout;
 
     if (mbx_action == LPFC_MBX_NO_WAIT) {
         /* delay 100ms for port state */
         msleep(100);
         lpfc_sli_mbox_sys_flush(phba);
         return;
     }
     timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies;
 
     /* Disable softirqs, including timers from obtaining phba->hbalock */
     local_bh_disable();
 
     spin_lock_irq(&phba->hbalock);
     psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
 
     if (psli->sli_flag & LPFC_SLI_ACTIVE) {
         /* Determine how long we might wait for the active mailbox
          * command to be gracefully completed by firmware.
          */
         if (phba->sli.mbox_active)
             timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
                         phba->sli.mbox_active) *
                         1000) + jiffies;
         spin_unlock_irq(&phba->hbalock);
 
         /* Enable softirqs again, done with phba->hbalock */
         local_bh_enable();
 
         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;
         }
     } else {
         spin_unlock_irq(&phba->hbalock);
 
         /* Enable softirqs again, done with phba->hbalock */
         local_bh_enable();
     }
 
     lpfc_sli_mbox_sys_flush(phba);
 }
 
 /**
  * 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 function 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 */
     if (lpfc_readl(phba->HAregaddr, &ha_copy))
         goto unplug_err;
 
     if (ha_copy & HA_ERATT) {
         /* Read host status register to retrieve error event */
         if (lpfc_sli_read_hs(phba))
             goto unplug_err;
 
         /* 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 | HS_FFER8) & 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;
 
 unplug_err:
     /* Set the driver HS work bitmap */
     phba->work_hs |= UNPLUG_ERR;
     /* Set the driver HA work bitmap */
     phba->work_ha |= HA_ERATT;
     /* Indicate polling handles this ERATT */
     phba->hba_flag |= HBA_ERATT_HANDLED;
     return 1;
 }
 
 /**
  * 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 function 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 if_type, portsmphr;
     struct lpfc_register portstat_reg;
     u32 logmask;
 
     /*
      * For now, use the SLI4 device internal unrecoverable error
      * registers for error attention. This can be changed later.
      */
     if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
     switch (if_type) {
     case LPFC_SLI_INTF_IF_TYPE_0:
         if (lpfc_readl(phba->sli4_hba.u.if_type0.UERRLOregaddr,
             &uerr_sta_lo) ||
             lpfc_readl(phba->sli4_hba.u.if_type0.UERRHIregaddr,
             &uerr_sta_hi)) {
             phba->work_hs |= UNPLUG_ERR;
             phba->work_ha |= HA_ERATT;
             phba->hba_flag |= HBA_ERATT_HANDLED;
             return 1;
         }
         if ((~phba->sli4_hba.ue_mask_lo & uerr_sta_lo) ||
             (~phba->sli4_hba.ue_mask_hi & uerr_sta_hi)) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "1423 HBA Unrecoverable error: "
                     "uerr_lo_reg=0x%x, uerr_hi_reg=0x%x, "
                     "ue_mask_lo_reg=0x%x, "
                     "ue_mask_hi_reg=0x%x\n",
                     uerr_sta_lo, uerr_sta_hi,
                     phba->sli4_hba.ue_mask_lo,
                     phba->sli4_hba.ue_mask_hi);
             phba->work_status[0] = uerr_sta_lo;
             phba->work_status[1] = uerr_sta_hi;
             phba->work_ha |= HA_ERATT;
             phba->hba_flag |= HBA_ERATT_HANDLED;
             return 1;
         }
         break;
     case LPFC_SLI_INTF_IF_TYPE_2:
     case LPFC_SLI_INTF_IF_TYPE_6:
         if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
             &portstat_reg.word0) ||
             lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
             &portsmphr)){
             phba->work_hs |= UNPLUG_ERR;
             phba->work_ha |= HA_ERATT;
             phba->hba_flag |= HBA_ERATT_HANDLED;
             return 1;
         }
         if (bf_get(lpfc_sliport_status_err, &portstat_reg)) {
             phba->work_status[0] =
                 readl(phba->sli4_hba.u.if_type2.ERR1regaddr);
             phba->work_status[1] =
                 readl(phba->sli4_hba.u.if_type2.ERR2regaddr);
             logmask = LOG_TRACE_EVENT;
             if (phba->work_status[0] ==
                 SLIPORT_ERR1_REG_ERR_CODE_2 &&
                 phba->work_status[1] == SLIPORT_ERR2_REG_FW_RESTART)
                 logmask = LOG_SLI;
             lpfc_printf_log(phba, KERN_ERR, logmask,
                     "2885 Port Status Event: "
                     "port status reg 0x%x, "
                     "port smphr reg 0x%x, "
                     "error 1=0x%x, error 2=0x%x\n",
                     portstat_reg.word0,
                     portsmphr,
                     phba->work_status[0],
                     phba->work_status[1]);
             phba->work_ha |= HA_ERATT;
             phba->hba_flag |= HBA_ERATT_HANDLED;
             return 1;
         }
         break;
     case LPFC_SLI_INTF_IF_TYPE_1:
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2886 HBA Error Attention on unsupported "
                 "if type %d.", if_type);
         return 1;
     }
 
     return 0;
 }
 
 /**
  * lpfc_sli_check_eratt - check error attention events
  * @phba: Pointer to HBA context.
  *
  * This function is called from timer soft interrupt context to check HBA's
  * error attention register bit for error attention events.
  *
  * This function returns 1 when there is Error Attention in the Host Attention
  * Register and returns 0 otherwise.
  **/
 int
 lpfc_sli_check_eratt(struct lpfc_hba *phba)
 {
     uint32_t ha_copy;
 
     /* If somebody is waiting to handle an eratt, don't process it
      * here. The brdkill function will do this.
      */
     if (phba->link_flag & LS_IGNORE_ERATT)
         return 0;
 
     /* Check if interrupt handler handles this ERATT */
     spin_lock_irq(&phba->hbalock);
     if (phba->hba_flag & HBA_ERATT_HANDLED) {
         /* Interrupt handler has handled ERATT */
         spin_unlock_irq(&phba->hbalock);
         return 0;
     }
 
     /*
      * If there is deferred error attention, do not check for error
      * attention
      */
     if (unlikely(phba->hba_flag & DEFER_ERATT)) {
         spin_unlock_irq(&phba->hbalock);
         return 0;
     }
 
     /* If PCI channel is offline, don't process it */
     if (unlikely(pci_channel_offline(phba->pcidev))) {
         spin_unlock_irq(&phba->hbalock);
         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 device Uncoverable Error (UERR) registers */
         ha_copy = lpfc_sli4_eratt_read(phba);
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "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_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 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_sli_sp_intr_handler(int irq, void *dev_id)
 {
     struct lpfc_hba  *phba;
     uint32_t ha_copy, hc_copy;
     uint32_t work_ha_copy;
     unsigned long status;
     unsigned long iflag;
     uint32_t control;
 
     MAILBOX_t *mbox, *pmbox;
     struct lpfc_vport *vport;
     struct lpfc_nodelist *ndlp;
     struct lpfc_dmabuf *mp;
     LPFC_MBOXQ_t *pmb;
     int rc;
 
     /*
      * Get the driver's phba structure from the dev_id and
      * assume the HBA is not interrupting.
      */
     phba = (struct lpfc_hba *)dev_id;
 
     if (unlikely(!phba))
         return IRQ_NONE;
 
     /*
      * Stuff needs to be attented to when this function is invoked as an
      * individual interrupt handler in MSI-X multi-message interrupt mode
      */
     if (phba->intr_type == MSIX) {
         /* 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);
         if (lpfc_readl(phba->HAregaddr, &ha_copy))
             goto unplug_error;
         /* If somebody is waiting to handle an eratt don't process it
          * here. The brdkill function will do this.
          */
         if (phba->link_flag & LS_IGNORE_ERATT)
             ha_copy &= ~HA_ERATT;
         /* Check the need for handling ERATT in interrupt handler */
         if (ha_copy & HA_ERATT) {
             if (phba->hba_flag & HBA_ERATT_HANDLED)
                 /* ERATT polling has handled ERATT */
                 ha_copy &= ~HA_ERATT;
             else
                 /* Indicate interrupt handler handles ERATT */
                 phba->hba_flag |= HBA_ERATT_HANDLED;
         }
 
         /*
          * If there is deferred error attention, do not check for any
          * interrupt.
          */
         if (unlikely(phba->hba_flag & DEFER_ERATT)) {
             spin_unlock_irqrestore(&phba->hbalock, iflag);
             return IRQ_NONE;
         }
 
         /* Clear up only attention source related to slow-path */
         if (lpfc_readl(phba->HCregaddr, &hc_copy))
             goto unplug_error;
 
         writel(hc_copy & ~(HC_MBINT_ENA | HC_R2INT_ENA |
             HC_LAINT_ENA | HC_ERINT_ENA),
             phba->HCregaddr);
         writel((ha_copy & (HA_MBATT | HA_R2_CLR_MSK)),
             phba->HAregaddr);
         writel(hc_copy, phba->HCregaddr);
         readl(phba->HAregaddr); /* flush */
         spin_unlock_irqrestore(&phba->hbalock, iflag);
     } else
         ha_copy = phba->ha_copy;
 
     work_ha_copy = ha_copy & phba->work_ha_mask;
 
     if (work_ha_copy) {
         if (work_ha_copy & HA_LATT) {
             if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
                 /*
                  * Turn off Link Attention interrupts
                  * until CLEAR_LA done
                  */
                 spin_lock_irqsave(&phba->hbalock, iflag);
                 phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
                 if (lpfc_readl(phba->HCregaddr, &control))
                     goto unplug_error;
                 control &= ~HC_LAINT_ENA;
                 writel(control, phba->HCregaddr);
                 readl(phba->HCregaddr); /* flush */
                 spin_unlock_irqrestore(&phba->hbalock, iflag);
             }
             else
                 work_ha_copy &= ~HA_LATT;
         }
 
         if (work_ha_copy & ~(HA_ERATT | HA_MBATT | HA_LATT)) {
             /*
              * Turn off Slow Rings interrupts, LPFC_ELS_RING is
              * the only slow ring.
              */
             status = (work_ha_copy &
                 (HA_RXMASK  << (4*LPFC_ELS_RING)));
             status >>= (4*LPFC_ELS_RING);
             if (status & HA_RXMASK) {
                 spin_lock_irqsave(&phba->hbalock, iflag);
                 if (lpfc_readl(phba->HCregaddr, &control))
                     goto unplug_error;
 
                 lpfc_debugfs_slow_ring_trc(phba,
                 "ISR slow ring:   ctl:x%x stat:x%x isrcnt:x%x",
                 control, status,
                 (uint32_t)phba->sli.slistat.sli_intr);
 
                 if (control & (HC_R0INT_ENA << LPFC_ELS_RING)) {
                     lpfc_debugfs_slow_ring_trc(phba,
                         "ISR Disable ring:"
                         "pwork:x%x hawork:x%x wait:x%x",
                         phba->work_ha, work_ha_copy,
                         (uint32_t)((unsigned long)
                         &phba->work_waitq));
 
                     control &=
                         ~(HC_R0INT_ENA << LPFC_ELS_RING);
                     writel(control, phba->HCregaddr);
                     readl(phba->HCregaddr); /* flush */
                 }
                 else {
                     lpfc_debugfs_slow_ring_trc(phba,
                         "ISR slow ring:   pwork:"
                         "x%x hawork:x%x wait:x%x",
                         phba->work_ha, work_ha_copy,
                         (uint32_t)((unsigned long)
                         &phba->work_waitq));
                 }
                 spin_unlock_irqrestore(&phba->hbalock, iflag);
             }
         }
         spin_lock_irqsave(&phba->hbalock, iflag);
         if (work_ha_copy & HA_ERATT) {
             if (lpfc_sli_read_hs(phba))
                 goto unplug_error;
             /*
              * 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 | HS_FFER8) &
                   phba->work_hs)) {
                 phba->hba_flag |= DEFER_ERATT;
                 /* Clear all interrupt enable conditions */
                 writel(0, phba->HCregaddr);
                 readl(phba->HCregaddr);
             }
         }
 
         if ((work_ha_copy & HA_MBATT) && (phba->sli.mbox_active)) {
             pmb = phba->sli.mbox_active;
             pmbox = &pmb->u.mb;
             mbox = phba->mbox;
             vport = pmb->vport;
 
             /* First check out the status word */
             lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof(uint32_t));
             if (pmbox->mbxOwner != OWN_HOST) {
                 spin_unlock_irqrestore(&phba->hbalock, iflag);
                 /*
                  * Stray Mailbox Interrupt, mbxCommand <cmd>
                  * mbxStatus <status>
                  */
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "(%d):0304 Stray Mailbox "
                         "Interrupt mbxCommand x%x "
                         "mbxStatus x%x\n",
                         (vport ? vport->vpi : 0),
                         pmbox->mbxCommand,
                         pmbox->mbxStatus);
                 /* clear mailbox attention bit */
                 work_ha_copy &= ~HA_MBATT;
             } else {
                 phba->sli.mbox_active = NULL;
                 spin_unlock_irqrestore(&phba->hbalock, iflag);
                 phba->last_completion_time = jiffies;
                 del_timer(&phba->sli.mbox_tmo);
                 if (pmb->mbox_cmpl) {
                     lpfc_sli_pcimem_bcopy(mbox, pmbox,
                             MAILBOX_CMD_SIZE);
                     if (pmb->out_ext_byte_len &&
                         pmb->ctx_buf)
                         lpfc_sli_pcimem_bcopy(
                         phba->mbox_ext,
                         pmb->ctx_buf,
                         pmb->out_ext_byte_len);
                 }
                 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",
                         (uint32_t)pmbox->mbxStatus,
                         pmbox->un.varWords[0], 0);
 
                     if (!pmbox->mbxStatus) {
                         mp = (struct lpfc_dmabuf *)
                             (pmb->ctx_buf);
                         ndlp = (struct lpfc_nodelist *)
                             pmb->ctx_ndlp;
 
                         /* Reg_LOGIN of dflt RPI was
                          * successful. new lets get
                          * rid of the RPI 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->ctx_buf = mp;
                         pmb->ctx_ndlp = ndlp;
                         pmb->vport = vport;
                         rc = lpfc_sli_issue_mbox(phba,
                                 pmb,
                                 MBX_NOWAIT);
                         if (rc != MBX_BUSY)
                             lpfc_printf_log(phba,
                             KERN_ERR,
                             LOG_TRACE_EVENT,
                             "0350 rc should have"
                             "been MBX_BUSY\n");
                         if (rc != MBX_NOT_FINISHED)
                             goto send_current_mbox;
                     }
                 }
                 spin_lock_irqsave(
                         &phba->pport->work_port_lock,
                         iflag);
                 phba->pport->work_port_events &=
                     ~WORKER_MBOX_TMO;
                 spin_unlock_irqrestore(
                         &phba->pport->work_port_lock,
                         iflag);
 
                 /* Do NOT queue MBX_HEARTBEAT to the worker
                  * thread for processing.
                  */
                 if (pmbox->mbxCommand == MBX_HEARTBEAT) {
                     /* Process mbox now */
                     phba->sli.mbox_active = NULL;
                     phba->sli.sli_flag &=
                         ~LPFC_SLI_MBOX_ACTIVE;
                     if (pmb->mbox_cmpl)
                         pmb->mbox_cmpl(phba, pmb);
                 } else {
                     /* Queue to worker thread to process */
                     lpfc_mbox_cmpl_put(phba, pmb);
                 }
             }
         } else
             spin_unlock_irqrestore(&phba->hbalock, iflag);
 
         if ((work_ha_copy & HA_MBATT) &&
             (phba->sli.mbox_active == NULL)) {
 send_current_mbox:
             /* Process next mailbox command if there is one */
             do {
                 rc = lpfc_sli_issue_mbox(phba, NULL,
                              MBX_NOWAIT);
             } while (rc == MBX_NOT_FINISHED);
             if (rc != MBX_SUCCESS)
                 lpfc_printf_log(phba, KERN_ERR,
                         LOG_TRACE_EVENT,
                         "0349 rc should be "
                         "MBX_SUCCESS\n");
         }
 
         spin_lock_irqsave(&phba->hbalock, iflag);
         phba->work_ha |= work_ha_copy;
         spin_unlock_irqrestore(&phba->hbalock, iflag);
         lpfc_worker_wake_up(phba);
     }
     return IRQ_HANDLED;
 unplug_error:
     spin_unlock_irqrestore(&phba->hbalock, iflag);
     return IRQ_HANDLED;
 
 } /* lpfc_sli_sp_intr_handler */
 
 /**
  * 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 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_sli_fp_intr_handler(int irq, void *dev_id)
 {
     struct lpfc_hba  *phba;
     uint32_t ha_copy;
     unsigned long status;
     unsigned long iflag;
     struct lpfc_sli_ring *pring;
 
     /* Get the driver's phba structure from the dev_id and
      * assume the HBA is not interrupting.
      */
     phba = (struct lpfc_hba *) dev_id;
 
     if (unlikely(!phba))
         return IRQ_NONE;
 
     /*
      * Stuff needs to be attented to when this function is invoked as an
      * individual interrupt handler in MSI-X multi-message interrupt mode
      */
     if (phba->intr_type == MSIX) {
         /* 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 */
         if (lpfc_readl(phba->HAregaddr, &ha_copy))
             return IRQ_HANDLED;
         /* Clear up only attention source related to fast-path */
         spin_lock_irqsave(&phba->hbalock, iflag);
         /*
          * If there is deferred error attention, do not check for
          * any interrupt.
          */
         if (unlikely(phba->hba_flag & DEFER_ERATT)) {
             spin_unlock_irqrestore(&phba->hbalock, iflag);
             return IRQ_NONE;
         }
         writel((ha_copy & (HA_R0_CLR_MSK | HA_R1_CLR_MSK)),
             phba->HAregaddr);
         readl(phba->HAregaddr); /* flush */
         spin_unlock_irqrestore(&phba->hbalock, iflag);
     } else
         ha_copy = phba->ha_copy;
 
     /*
      * Process all events on FCP ring. Take the optimized path for FCP IO.
      */
     ha_copy &= ~(phba->work_ha_mask);
 
     status = (ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING)));
     status >>= (4*LPFC_FCP_RING);
     pring = &phba->sli.sli3_ring[LPFC_FCP_RING];
     if (status & HA_RXMASK)
         lpfc_sli_handle_fast_ring_event(phba, pring, status);
 
     if (phba->cfg_multi_ring_support == 2) {
         /*
          * Process all events on extra ring. Take the optimized path
          * for extra ring IO.
          */
         status = (ha_copy & (HA_RXMASK << (4*LPFC_EXTRA_RING)));
         status >>= (4*LPFC_EXTRA_RING);
         if (status & HA_RXMASK) {
             lpfc_sli_handle_fast_ring_event(phba,
                     &phba->sli.sli3_ring[LPFC_EXTRA_RING],
                     status);
         }
     }
     return IRQ_HANDLED;
 }  /* lpfc_sli_fp_intr_handler */
 
 /**
  * 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 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_sli_intr_handler(int irq, void *dev_id)
 {
     struct lpfc_hba  *phba;
     irqreturn_t sp_irq_rc, fp_irq_rc;
     unsigned long status1, status2;
     uint32_t hc_copy;
 
     /*
      * Get the driver's phba structure from the dev_id and
      * assume the HBA is not interrupting.
      */
     phba = (struct lpfc_hba *) dev_id;
 
     if (unlikely(!phba))
         return IRQ_NONE;
 
     /* Check device state for handling interrupt */
     if (lpfc_intr_state_check(phba))
         return IRQ_NONE;
 
     spin_lock(&phba->hbalock);
     if (lpfc_readl(phba->HAregaddr, &phba->ha_copy)) {
         spin_unlock(&phba->hbalock);
         return IRQ_HANDLED;
     }
 
     if (unlikely(!phba->ha_copy)) {
         spin_unlock(&phba->hbalock);
         return IRQ_NONE;
     } else if (phba->ha_copy & HA_ERATT) {
         if (phba->hba_flag & HBA_ERATT_HANDLED)
             /* ERATT polling has handled ERATT */
             phba->ha_copy &= ~HA_ERATT;
         else
             /* Indicate interrupt handler handles ERATT */
             phba->hba_flag |= HBA_ERATT_HANDLED;
     }
 
     /*
      * If there is deferred error attention, do not check for any interrupt.
      */
     if (unlikely(phba->hba_flag & DEFER_ERATT)) {
         spin_unlock(&phba->hbalock);
         return IRQ_NONE;
     }
 
     /* Clear attention sources except link and error attentions */
     if (lpfc_readl(phba->HCregaddr, &hc_copy)) {
         spin_unlock(&phba->hbalock);
         return IRQ_HANDLED;
     }
     writel(hc_copy & ~(HC_MBINT_ENA | HC_R0INT_ENA | HC_R1INT_ENA
         | HC_R2INT_ENA | HC_LAINT_ENA | HC_ERINT_ENA),
         phba->HCregaddr);
     writel((phba->ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
     writel(hc_copy, phba->HCregaddr);
     readl(phba->HAregaddr); /* flush */
     spin_unlock(&phba->hbalock);
 
     /*
      * Invokes slow-path host attention interrupt handling as appropriate.
      */
 
     /* status of events with mailbox and link attention */
     status1 = phba->ha_copy & (HA_MBATT | HA_LATT | HA_ERATT);
 
     /* status of events with ELS ring */
     status2 = (phba->ha_copy & (HA_RXMASK  << (4*LPFC_ELS_RING)));
     status2 >>= (4*LPFC_ELS_RING);
 
     if (status1 || (status2 & HA_RXMASK))
         sp_irq_rc = lpfc_sli_sp_intr_handler(irq, dev_id);
     else
         sp_irq_rc = IRQ_NONE;
 
     /*
      * Invoke fast-path host attention interrupt handling as appropriate.
      */
 
     /* status of events with FCP ring */
     status1 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING)));
     status1 >>= (4*LPFC_FCP_RING);
 
     /* status of events with extra ring */
     if (phba->cfg_multi_ring_support == 2) {
         status2 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_EXTRA_RING)));
         status2 >>= (4*LPFC_EXTRA_RING);
     } else
         status2 = 0;
 
     if ((status1 & HA_RXMASK) || (status2 & HA_RXMASK))
         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_sli_intr_handler */
 
 /**
  * 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;
     unsigned long iflags;
 
     /* First, declare the els xri abort event has been handled */
     spin_lock_irqsave(&phba->hbalock, iflags);
     phba->hba_flag &= ~ELS_XRI_ABORT_EVENT;
     spin_unlock_irqrestore(&phba->hbalock, iflags);
 
     /* Now, handle all the els xri abort events */
     spin_lock_irqsave(&phba->sli4_hba.els_xri_abrt_list_lock, iflags);
     while (!list_empty(&phba->sli4_hba.sp_els_xri_aborted_work_queue)) {
         /* Get the first event from the head of the event queue */
         list_remove_head(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
                  cq_event, struct lpfc_cq_event, list);
         spin_unlock_irqrestore(&phba->sli4_hba.els_xri_abrt_list_lock,
                        iflags);
         /* 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);
         spin_lock_irqsave(&phba->sli4_hba.els_xri_abrt_list_lock,
                   iflags);
     }
     spin_unlock_irqrestore(&phba->sli4_hba.els_xri_abrt_list_lock, iflags);
 }
 
 /**
  * lpfc_sli4_els_preprocess_rspiocbq - Get response iocbq from els wcqe
  * @phba: Pointer to HBA context object.
  * @irspiocbq: Pointer to work-queue completion queue entry.
  *
  * This routine handles an ELS work-queue completion event and construct
  * a pseudo response ELS IOCBQ from the SLI4 ELS WCQE for the common
  * discovery engine to handle.
  *
  * Return: Pointer to the receive IOCBQ, NULL otherwise.
  **/
 static struct lpfc_iocbq *
 lpfc_sli4_els_preprocess_rspiocbq(struct lpfc_hba *phba,
                   struct lpfc_iocbq *irspiocbq)
 {
     struct lpfc_sli_ring *pring;
     struct lpfc_iocbq *cmdiocbq;
     struct lpfc_wcqe_complete *wcqe;
     unsigned long iflags;
 
     pring = lpfc_phba_elsring(phba);
     if (unlikely(!pring))
         return NULL;
 
     wcqe = &irspiocbq->cq_event.cqe.wcqe_cmpl;
     spin_lock_irqsave(&pring->ring_lock, 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));
     if (unlikely(!cmdiocbq)) {
         spin_unlock_irqrestore(&pring->ring_lock, iflags);
         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
                 "0386 ELS complete with no corresponding "
                 "cmdiocb: 0x%x 0x%x 0x%x 0x%x\n",
                 wcqe->word0, wcqe->total_data_placed,
                 wcqe->parameter, wcqe->word3);
         lpfc_sli_release_iocbq(phba, irspiocbq);
         return NULL;
     }
 
     memcpy(&irspiocbq->wqe, &cmdiocbq->wqe, sizeof(union lpfc_wqe128));
     memcpy(&irspiocbq->wcqe_cmpl, wcqe, sizeof(*wcqe));
 
     /* Put the iocb back on the txcmplq */
     lpfc_sli_ringtxcmpl_put(phba, pring, cmdiocbq);
     spin_unlock_irqrestore(&pring->ring_lock, iflags);
 
     if (bf_get(lpfc_wcqe_c_xb, wcqe)) {
         spin_lock_irqsave(&phba->hbalock, iflags);
         irspiocbq->cmd_flag |= LPFC_EXCHANGE_BUSY;
         spin_unlock_irqrestore(&phba->hbalock, iflags);
     }
 
     return irspiocbq;
 }
 
 inline struct lpfc_cq_event *
 lpfc_cq_event_setup(struct lpfc_hba *phba, void *entry, int size)
 {
     struct lpfc_cq_event *cq_event;
 
     /* 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_TRACE_EVENT,
                 "0602 Failed to alloc CQ_EVENT entry\n");
         return NULL;
     }
 
     /* Move the CQE into the event */
     memcpy(&cq_event->cqe, entry, size);
     return cq_event;
 }
 
 /**
  * lpfc_sli4_sp_handle_async_event - Handle an asynchronous event
  * @phba: Pointer to HBA context object.
  * @mcqe: Pointer to mailbox completion queue entry.
  *
  * This routine process a mailbox completion queue entry with asynchronous
  * 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);
 
     cq_event = lpfc_cq_event_setup(phba, mcqe, sizeof(struct lpfc_mcqe));
     if (!cq_event)
         return false;
 
     spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
     list_add_tail(&cq_event->list, &phba->sli4_hba.sp_asynce_work_queue);
     spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock, iflags);
 
     /* Set the async event flag */
     spin_lock_irqsave(&phba->hbalock, iflags);
     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.
  * @mcqe: 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_TRACE_EVENT,
                 "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_sli4_pcimem_bcopy(mbox, mqe, sizeof(struct lpfc_mqe));
 
     /*
      * For mcqe errors, conditionally move a modified error code to
      * the mbox so that the error will not be missed.
      */
     mcqe_status = bf_get(lpfc_mcqe_status, mcqe);
     if (mcqe_status != MB_CQE_STATUS_SUCCESS) {
         if (bf_get(lpfc_mqe_status, mqe) == MBX_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->ctx_buf);
             ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
 
             /* Reg_LOGIN of dflt RPI was successful. Mark the
              * node as having an UNREG_LOGIN in progress to stop
              * an unsolicited PLOGI from the same NPortId from
              * starting another mailbox transaction.
              */
             spin_lock_irqsave(&ndlp->lock, iflags);
             ndlp->nlp_flag |= NLP_UNREG_INP;
             spin_unlock_irqrestore(&ndlp->lock, iflags);
             lpfc_unreg_login(phba, vport->vpi,
                      pmbox->un.varWords[0], pmb);
             pmb->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
             pmb->ctx_buf = mp;
 
             /* No reference taken here.  This is a default
              * RPI reg/immediate unreg cycle. The reference was
              * taken in the reg rpi path and is released when
              * this mailbox completes.
              */
             pmb->ctx_ndlp = ndlp;
             pmb->vport = vport;
             rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
             if (rc != MBX_BUSY)
                 lpfc_printf_log(phba, KERN_ERR,
                         LOG_TRACE_EVENT,
                         "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);
 
     /* Do NOT queue MBX_HEARTBEAT to the worker thread for processing. */
     if (pmbox->mbxCommand == MBX_HEARTBEAT) {
         spin_lock_irqsave(&phba->hbalock, iflags);
         /* Release the mailbox command posting token */
         phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
         phba->sli.mbox_active = NULL;
         if (bf_get(lpfc_trailer_consumed, mcqe))
             lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq);
         spin_unlock_irqrestore(&phba->hbalock, iflags);
 
         /* Post the next mbox command, if there is one */
         lpfc_sli4_post_async_mbox(phba);
 
         /* Process cmpl now */
         if (pmb->mbox_cmpl)
             pmb->mbox_cmpl(phba, pmb);
         return false;
     }
 
     /* There is mailbox completion work to queue to the worker thread */
     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;
     if (bf_get(lpfc_trailer_consumed, mcqe))
         lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq);
     spin_unlock_irqrestore(&phba->hbalock, iflags);
     /* Wake up worker thread to post the next pending mailbox command */
     lpfc_worker_wake_up(phba);
     return workposted;
 
 out_no_mqe_complete:
     spin_lock_irqsave(&phba->hbalock, iflags);
     if (bf_get(lpfc_trailer_consumed, mcqe))
         lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq);
     spin_unlock_irqrestore(&phba->hbalock, iflags);
     return false;
 }
 
 /**
  * lpfc_sli4_sp_handle_mcqe - Process a mailbox completion queue entry
  * @phba: Pointer to HBA context object.
  * @cq: Pointer to associated CQ
  * @cqe: Pointer to mailbox completion queue entry.
  *
  * This routine process a mailbox completion queue entry, it invokes the
  * proper mailbox complete handling or asynchronous 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_queue *cq,
              struct lpfc_cqe *cqe)
 {
     struct lpfc_mcqe mcqe;
     bool workposted;
 
     cq->CQ_mbox++;
 
     /* Copy the mailbox MCQE and convert endian order as needed */
     lpfc_sli4_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.
  * @cq: Pointer to associated CQ
  * @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_queue *cq,
                  struct lpfc_wcqe_complete *wcqe)
 {
     struct lpfc_iocbq *irspiocbq;
     unsigned long iflags;
     struct lpfc_sli_ring *pring = cq->pring;
     int txq_cnt = 0;
     int txcmplq_cnt = 0;
 
     /* Check for response status */
     if (unlikely(bf_get(lpfc_wcqe_c_status, wcqe))) {
         /* Log the error status */
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "0357 ELS CQE error: status=x%x: "
                 "CQE: %08x %08x %08x %08x\n",
                 bf_get(lpfc_wcqe_c_status, wcqe),
                 wcqe->word0, wcqe->total_data_placed,
                 wcqe->parameter, wcqe->word3);
     }
 
     /* Get an irspiocbq for later ELS response processing use */
     irspiocbq = lpfc_sli_get_iocbq(phba);
     if (!irspiocbq) {
         if (!list_empty(&pring->txq))
             txq_cnt++;
         if (!list_empty(&pring->txcmplq))
             txcmplq_cnt++;
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "0387 NO IOCBQ data: txq_cnt=%d iocb_cnt=%d "
             "els_txcmplq_cnt=%d\n",
             txq_cnt, phba->iocb_cnt,
             txcmplq_cnt);
         return false;
     }
 
     /* Save off the slow-path queue event for work thread to process */
     memcpy(&irspiocbq->cq_event.cqe.wcqe_cmpl, wcqe, sizeof(*wcqe));
     spin_lock_irqsave(&phba->hbalock, iflags);
     list_add_tail(&irspiocbq->cq_event.list,
               &phba->sli4_hba.sp_queue_event);
     phba->hba_flag |= HBA_SP_QUEUE_EVT;
     spin_unlock_irqrestore(&phba->hbalock, iflags);
 
     return true;
 }
 
 /**
  * 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 consumed 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)
 {
     /* sanity check on queue memory */
     if (unlikely(!phba->sli4_hba.els_wq))
         return;
     /* 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;
 
     switch (cq->subtype) {
     case LPFC_IO:
         lpfc_sli4_io_xri_aborted(phba, wcqe, cq->hdwq);
         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
             /* Notify aborted XRI for NVME work queue */
             if (phba->nvmet_support)
                 lpfc_sli4_nvmet_xri_aborted(phba, wcqe);
         }
         workposted = false;
         break;
     case LPFC_NVME_LS: /* NVME LS uses ELS resources */
     case LPFC_ELS:
         cq_event = lpfc_cq_event_setup(phba, wcqe, sizeof(*wcqe));
         if (!cq_event) {
             workposted = false;
             break;
         }
         cq_event->hdwq = cq->hdwq;
         spin_lock_irqsave(&phba->sli4_hba.els_xri_abrt_list_lock,
                   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->sli4_hba.els_xri_abrt_list_lock,
                        iflags);
         workposted = true;
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0603 Invalid CQ subtype %d: "
                 "%08x %08x %08x %08x\n",
                 cq->subtype, wcqe->word0, wcqe->parameter,
                 wcqe->word2, wcqe->word3);
         workposted = false;
         break;
     }
     return workposted;
 }
 
 #define FC_RCTL_MDS_DIAGS   0xF4
 
 /**
  * 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_rcqe *rcqe)
 {
     bool workposted = false;
     struct fc_frame_header *fc_hdr;
     struct lpfc_queue *hrq = phba->sli4_hba.hdr_rq;
     struct lpfc_queue *drq = phba->sli4_hba.dat_rq;
     struct lpfc_nvmet_tgtport *tgtp;
     struct hbq_dmabuf *dma_buf;
     uint32_t status, rq_id;
     unsigned long iflags;
 
     /* sanity check on queue memory */
     if (unlikely(!hrq) || unlikely(!drq))
         return workposted;
 
     if (bf_get(lpfc_cqe_code, rcqe) == CQE_CODE_RECEIVE_V1)
         rq_id = bf_get(lpfc_rcqe_rq_id_v1, rcqe);
     else
         rq_id = bf_get(lpfc_rcqe_rq_id, rcqe);
     if (rq_id != 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_TRACE_EVENT,
                 "2537 Receive Frame Truncated!!\n");
         fallthrough;
     case FC_STATUS_RQ_SUCCESS:
         spin_lock_irqsave(&phba->hbalock, iflags);
         lpfc_sli4_rq_release(hrq, drq);
         dma_buf = lpfc_sli_hbqbuf_get(&phba->hbqs[0].hbq_buffer_list);
         if (!dma_buf) {
             hrq->RQ_no_buf_found++;
             spin_unlock_irqrestore(&phba->hbalock, iflags);
             goto out;
         }
         hrq->RQ_rcv_buf++;
         hrq->RQ_buf_posted--;
         memcpy(&dma_buf->cq_event.cqe.rcqe_cmpl, rcqe, sizeof(*rcqe));
 
         fc_hdr = (struct fc_frame_header *)dma_buf->hbuf.virt;
 
         if (fc_hdr->fh_r_ctl == FC_RCTL_MDS_DIAGS ||
             fc_hdr->fh_r_ctl == FC_RCTL_DD_UNSOL_DATA) {
             spin_unlock_irqrestore(&phba->hbalock, iflags);
             /* Handle MDS Loopback frames */
             if  (!(phba->pport->load_flag & FC_UNLOADING))
                 lpfc_sli4_handle_mds_loopback(phba->pport,
                                   dma_buf);
             else
                 lpfc_in_buf_free(phba, &dma_buf->dbuf);
             break;
         }
 
         /* save off the frame for the work thread to process */
         list_add_tail(&dma_buf->cq_event.list,
                   &phba->sli4_hba.sp_queue_event);
         /* Frame received */
         phba->hba_flag |= HBA_SP_QUEUE_EVT;
         spin_unlock_irqrestore(&phba->hbalock, iflags);
         workposted = true;
         break;
     case FC_STATUS_INSUFF_BUF_FRM_DISC:
         if (phba->nvmet_support) {
             tgtp = phba->targetport->private;
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "6402 RQE Error x%x, posted %d err_cnt "
                     "%d: %x %x %x\n",
                     status, hrq->RQ_buf_posted,
                     hrq->RQ_no_posted_buf,
                     atomic_read(&tgtp->rcv_fcp_cmd_in),
                     atomic_read(&tgtp->rcv_fcp_cmd_out),
                     atomic_read(&tgtp->xmt_fcp_release));
         }
         fallthrough;
 
     case FC_STATUS_INSUFF_BUF_NEED_BUF:
         hrq->RQ_no_posted_buf++;
         /* 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_cqe - Process a slow path completion queue entry
  * @phba: Pointer to HBA context object.
  * @cq: Pointer to the completion queue.
  * @cqe: Pointer to a completion queue entry.
  *
  * This routine process a slow-path work-queue or receive queue completion queue
  * entry.
  *
  * Return: true if work posted to worker thread, otherwise false.
  **/
 static bool
 lpfc_sli4_sp_handle_cqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
              struct lpfc_cqe *cqe)
 {
     struct lpfc_cqe cqevt;
     bool workposted = false;
 
     /* Copy the work queue CQE and convert endian order if needed */
     lpfc_sli4_pcimem_bcopy(cqe, &cqevt, sizeof(struct lpfc_cqe));
 
     /* Check and process for different type of WCQE and dispatch */
     switch (bf_get(lpfc_cqe_code, &cqevt)) {
     case CQE_CODE_COMPL_WQE:
         /* Process the WQ/RQ complete event */
         phba->last_completion_time = jiffies;
         workposted = lpfc_sli4_sp_handle_els_wcqe(phba, cq,
                 (struct lpfc_wcqe_complete *)&cqevt);
         break;
     case CQE_CODE_RELEASE_WQE:
         /* Process the WQ release event */
         lpfc_sli4_sp_handle_rel_wcqe(phba,
                 (struct lpfc_wcqe_release *)&cqevt);
         break;
     case CQE_CODE_XRI_ABORTED:
         /* Process the WQ XRI abort event */
         phba->last_completion_time = jiffies;
         workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq,
                 (struct sli4_wcqe_xri_aborted *)&cqevt);
         break;
     case CQE_CODE_RECEIVE:
     case CQE_CODE_RECEIVE_V1:
         /* Process the RQ event */
         phba->last_completion_time = jiffies;
         workposted = lpfc_sli4_sp_handle_rcqe(phba,
                 (struct lpfc_rcqe *)&cqevt);
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0388 Not a valid WCQE code: x%x\n",
                 bf_get(lpfc_cqe_code, &cqevt));
         break;
     }
     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.
  * @speq: Pointer to slow-path event queue.
  *
  * 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 *speq)
 {
     struct lpfc_queue *cq = NULL, *childq;
     uint16_t cqid;
     int ret = 0;
 
     /* Get the reference to the corresponding CQ */
     cqid = bf_get_le32(lpfc_eqe_resource_id, eqe);
 
     list_for_each_entry(childq, &speq->child_list, list) {
         if (childq->queue_id == cqid) {
             cq = childq;
             break;
         }
     }
     if (unlikely(!cq)) {
         if (phba->sli.sli_flag & LPFC_SLI_ACTIVE)
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0365 Slow-path CQ identifier "
                     "(%d) does not exist\n", cqid);
         return;
     }
 
     /* Save EQ associated with this CQ */
     cq->assoc_qp = speq;
 
     if (is_kdump_kernel())
         ret = queue_work(phba->wq, &cq->spwork);
     else
         ret = queue_work_on(cq->chann, phba->wq, &cq->spwork);
 
     if (!ret)
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0390 Cannot schedule queue work "
                 "for CQ eqcqid=%d, cqid=%d on CPU %d\n",
                 cqid, cq->queue_id, raw_smp_processor_id());
 }
 
 /**
  * __lpfc_sli4_process_cq - Process elements of a CQ
  * @phba: Pointer to HBA context object.
  * @cq: Pointer to CQ to be processed
  * @handler: Routine to process each cqe
  * @delay: Pointer to usdelay to set in case of rescheduling of the handler
  * @poll_mode: Polling mode we were called from
  *
  * This routine processes completion queue entries in a CQ. While a valid
  * queue element is found, the handler is called. During processing checks
  * are made for periodic doorbell writes to let the hardware know of
  * element consumption.
  *
  * If the max limit on cqes to process is hit, or there are no more valid
  * entries, the loop stops. If we processed a sufficient number of elements,
  * meaning there is sufficient load, rather than rearming and generating
  * another interrupt, a cq rescheduling delay will be set. A delay of 0
  * indicates no rescheduling.
  *
  * Returns True if work scheduled, False otherwise.
  **/
 static bool
 __lpfc_sli4_process_cq(struct lpfc_hba *phba, struct lpfc_queue *cq,
     bool (*handler)(struct lpfc_hba *, struct lpfc_queue *,
             struct lpfc_cqe *), unsigned long *delay,
             enum lpfc_poll_mode poll_mode)
 {
     struct lpfc_cqe *cqe;
     bool workposted = false;
     int count = 0, consumed = 0;
     bool arm = true;
 
     /* default - no reschedule */
     *delay = 0;
 
     if (cmpxchg(&cq->queue_claimed, 0, 1) != 0)
         goto rearm_and_exit;
 
     /* Process all the entries to the CQ */
     cq->q_flag = 0;
     cqe = lpfc_sli4_cq_get(cq);
     while (cqe) {
         workposted |= handler(phba, cq, cqe);
         __lpfc_sli4_consume_cqe(phba, cq, cqe);
 
         consumed++;
         if (!(++count % cq->max_proc_limit))
             break;
 
         if (!(count % cq->notify_interval)) {
             phba->sli4_hba.sli4_write_cq_db(phba, cq, consumed,
                         LPFC_QUEUE_NOARM);
             consumed = 0;
             cq->assoc_qp->q_flag |= HBA_EQ_DELAY_CHK;
         }
 
         if (count == LPFC_NVMET_CQ_NOTIFY)
             cq->q_flag |= HBA_NVMET_CQ_NOTIFY;
 
         cqe = lpfc_sli4_cq_get(cq);
     }
     if (count >= phba->cfg_cq_poll_threshold) {
         *delay = 1;
         arm = false;
     }
 
     /* Note: complete the irq_poll softirq before rearming CQ */
     if (poll_mode == LPFC_IRQ_POLL)
         irq_poll_complete(&cq->iop);
 
     /* Track the max number of CQEs processed in 1 EQ */
     if (count > cq->CQ_max_cqe)
         cq->CQ_max_cqe = count;
 
     cq->assoc_qp->EQ_cqe_cnt += count;
 
     /* Catch the no cq entry condition */
     if (unlikely(count == 0))
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "0369 No entry from completion queue "
                 "qid=%d\n", cq->queue_id);
 
     xchg(&cq->queue_claimed, 0);
 
 rearm_and_exit:
     phba->sli4_hba.sli4_write_cq_db(phba, cq, consumed,
             arm ?  LPFC_QUEUE_REARM : LPFC_QUEUE_NOARM);
 
     return workposted;
 }
 
 /**
  * __lpfc_sli4_sp_process_cq - Process a slow-path event queue entry
  * @cq: pointer to CQ to process
  *
  * This routine calls the cq processing routine with a handler specific
  * to the type of queue bound to it.
  *
  * The CQ routine returns two values: the first is the calling status,
  * which indicates whether work was queued to the  background discovery
  * thread. If true, the routine should wakeup the discovery thread;
  * the second is the delay parameter. If non-zero, rather than rearming
  * the CQ and yet another interrupt, the CQ handler should be queued so
  * that it is processed in a subsequent polling action. The value of
  * the delay indicates when to reschedule it.
  **/
 static void
 __lpfc_sli4_sp_process_cq(struct lpfc_queue *cq)
 {
     struct lpfc_hba *phba = cq->phba;
     unsigned long delay;
     bool workposted = false;
     int ret = 0;
 
     /* Process and rearm the CQ */
     switch (cq->type) {
     case LPFC_MCQ:
         workposted |= __lpfc_sli4_process_cq(phba, cq,
                         lpfc_sli4_sp_handle_mcqe,
                         &delay, LPFC_QUEUE_WORK);
         break;
     case LPFC_WCQ:
         if (cq->subtype == LPFC_IO)
             workposted |= __lpfc_sli4_process_cq(phba, cq,
                         lpfc_sli4_fp_handle_cqe,
                         &delay, LPFC_QUEUE_WORK);
         else
             workposted |= __lpfc_sli4_process_cq(phba, cq,
                         lpfc_sli4_sp_handle_cqe,
                         &delay, LPFC_QUEUE_WORK);
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0370 Invalid completion queue type (%d)\n",
                 cq->type);
         return;
     }
 
     if (delay) {
         if (is_kdump_kernel())
             ret = queue_delayed_work(phba->wq, &cq->sched_spwork,
                         delay);
         else
             ret = queue_delayed_work_on(cq->chann, phba->wq,
                         &cq->sched_spwork, delay);
         if (!ret)
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0394 Cannot schedule queue work "
                 "for cqid=%d on CPU %d\n",
                 cq->queue_id, cq->chann);
     }
 
     /* wake up worker thread if there are works to be done */
     if (workposted)
         lpfc_worker_wake_up(phba);
 }
 
 /**
  * lpfc_sli4_sp_process_cq - slow-path work handler when started by
  *   interrupt
  * @work: pointer to work element
  *
  * translates from the work handler and calls the slow-path handler.
  **/
 static void
 lpfc_sli4_sp_process_cq(struct work_struct *work)
 {
     struct lpfc_queue *cq = container_of(work, struct lpfc_queue, spwork);
 
     __lpfc_sli4_sp_process_cq(cq);
 }
 
 /**
  * lpfc_sli4_dly_sp_process_cq - slow-path work handler when started by timer
  * @work: pointer to work element
  *
  * translates from the work handler and calls the slow-path handler.
  **/
 static void
 lpfc_sli4_dly_sp_process_cq(struct work_struct *work)
 {
     struct lpfc_queue *cq = container_of(to_delayed_work(work),
                     struct lpfc_queue, sched_spwork);
 
     __lpfc_sli4_sp_process_cq(cq);
 }
 
 /**
  * lpfc_sli4_fp_handle_fcp_wcqe - Process fast-path work queue completion entry
  * @phba: Pointer to HBA context object.
  * @cq: Pointer to associated CQ
  * @wcqe: Pointer to work-queue 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_queue *cq,
                  struct lpfc_wcqe_complete *wcqe)
 {
     struct lpfc_sli_ring *pring = cq->pring;
     struct lpfc_iocbq *cmdiocbq;
     unsigned long 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_PARAM_MASK) ==
              IOERR_NO_RESOURCES))
             phba->lpfc_rampdown_queue_depth(phba);
 
         /* Log the cmpl status */
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "0373 FCP CQE cmpl: status=x%x: "
                 "CQE: %08x %08x %08x %08x\n",
                 bf_get(lpfc_wcqe_c_status, wcqe),
                 wcqe->word0, wcqe->total_data_placed,
                 wcqe->parameter, wcqe->word3);
     }
 
     /* Look up the FCP command IOCB and create pseudo response IOCB */
     spin_lock_irqsave(&pring->ring_lock, iflags);
     pring->stats.iocb_event++;
     cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring,
                 bf_get(lpfc_wcqe_c_request_tag, wcqe));
     spin_unlock_irqrestore(&pring->ring_lock, 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;
     }
 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
     cmdiocbq->isr_timestamp = cq->isr_timestamp;
 #endif
     if (bf_get(lpfc_wcqe_c_xb, wcqe)) {
         spin_lock_irqsave(&phba->hbalock, iflags);
         cmdiocbq->cmd_flag |= LPFC_EXCHANGE_BUSY;
         spin_unlock_irqrestore(&phba->hbalock, iflags);
     }
 
     if (cmdiocbq->cmd_cmpl) {
         /* For FCP the flag is cleared in cmd_cmpl */
         if (!(cmdiocbq->cmd_flag & LPFC_IO_FCP) &&
             cmdiocbq->cmd_flag & LPFC_DRIVER_ABORTED) {
             spin_lock_irqsave(&phba->hbalock, iflags);
             cmdiocbq->cmd_flag &= ~LPFC_DRIVER_ABORTED;
             spin_unlock_irqrestore(&phba->hbalock, iflags);
         }
 
         /* Pass the cmd_iocb and the wcqe to the upper layer */
         memcpy(&cmdiocbq->wcqe_cmpl, wcqe,
                sizeof(struct lpfc_wcqe_complete));
         cmdiocbq->cmd_cmpl(phba, cmdiocbq, cmdiocbq);
     } else {
         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));
     }
 }
 
 /**
  * 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 consumed 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 hba_wqid;
 
     /* Check for fast-path FCP work queue release */
     hba_wqid = bf_get(lpfc_wcqe_r_wq_id, wcqe);
     list_for_each_entry(childwq, &cq->child_list, list) {
         if (childwq->queue_id == hba_wqid) {
             lpfc_sli4_wq_release(childwq,
                     bf_get(lpfc_wcqe_r_wqe_index, wcqe));
             if (childwq->q_flag & HBA_NVMET_WQFULL)
                 lpfc_nvmet_wqfull_process(phba, childwq);
             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", hba_wqid);
 }
 
 /**
  * lpfc_sli4_nvmet_handle_rcqe - Process a receive-queue completion queue entry
  * @phba: Pointer to HBA context object.
  * @cq: Pointer to completion queue.
  * @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_nvmet_handle_rcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
                 struct lpfc_rcqe *rcqe)
 {
     bool workposted = false;
     struct lpfc_queue *hrq;
     struct lpfc_queue *drq;
     struct rqb_dmabuf *dma_buf;
     struct fc_frame_header *fc_hdr;
     struct lpfc_nvmet_tgtport *tgtp;
     uint32_t status, rq_id;
     unsigned long iflags;
     uint32_t fctl, idx;
 
     if ((phba->nvmet_support == 0) ||
         (phba->sli4_hba.nvmet_cqset == NULL))
         return workposted;
 
     idx = cq->queue_id - phba->sli4_hba.nvmet_cqset[0]->queue_id;
     hrq = phba->sli4_hba.nvmet_mrq_hdr[idx];
     drq = phba->sli4_hba.nvmet_mrq_data[idx];
 
     /* sanity check on queue memory */
     if (unlikely(!hrq) || unlikely(!drq))
         return workposted;
 
     if (bf_get(lpfc_cqe_code, rcqe) == CQE_CODE_RECEIVE_V1)
         rq_id = bf_get(lpfc_rcqe_rq_id_v1, rcqe);
     else
         rq_id = bf_get(lpfc_rcqe_rq_id, rcqe);
 
     if ((phba->nvmet_support == 0) ||
         (rq_id != hrq->queue_id))
         return workposted;
 
     status = bf_get(lpfc_rcqe_status, rcqe);
     switch (status) {
     case FC_STATUS_RQ_BUF_LEN_EXCEEDED:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "6126 Receive Frame Truncated!!\n");
         fallthrough;
     case FC_STATUS_RQ_SUCCESS:
         spin_lock_irqsave(&phba->hbalock, iflags);
         lpfc_sli4_rq_release(hrq, drq);
         dma_buf = lpfc_sli_rqbuf_get(phba, hrq);
         if (!dma_buf) {
             hrq->RQ_no_buf_found++;
             spin_unlock_irqrestore(&phba->hbalock, iflags);
             goto out;
         }
         spin_unlock_irqrestore(&phba->hbalock, iflags);
         hrq->RQ_rcv_buf++;
         hrq->RQ_buf_posted--;
         fc_hdr = (struct fc_frame_header *)dma_buf->hbuf.virt;
 
         /* Just some basic sanity checks on FCP Command frame */
         fctl = (fc_hdr->fh_f_ctl[0] << 16 |
             fc_hdr->fh_f_ctl[1] << 8 |
             fc_hdr->fh_f_ctl[2]);
         if (((fctl &
             (FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT)) !=
             (FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT)) ||
             (fc_hdr->fh_seq_cnt != 0)) /* 0 byte swapped is still 0 */
             goto drop;
 
         if (fc_hdr->fh_type == FC_TYPE_FCP) {
             dma_buf->bytes_recv = bf_get(lpfc_rcqe_length, rcqe);
             lpfc_nvmet_unsol_fcp_event(
                 phba, idx, dma_buf, cq->isr_timestamp,
                 cq->q_flag & HBA_NVMET_CQ_NOTIFY);
             return false;
         }
 drop:
         lpfc_rq_buf_free(phba, &dma_buf->hbuf);
         break;
     case FC_STATUS_INSUFF_BUF_FRM_DISC:
         if (phba->nvmet_support) {
             tgtp = phba->targetport->private;
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "6401 RQE Error x%x, posted %d err_cnt "
                     "%d: %x %x %x\n",
                     status, hrq->RQ_buf_posted,
                     hrq->RQ_no_posted_buf,
                     atomic_read(&tgtp->rcv_fcp_cmd_in),
                     atomic_read(&tgtp->rcv_fcp_cmd_out),
                     atomic_read(&tgtp->xmt_fcp_release));
         }
         fallthrough;
 
     case FC_STATUS_INSUFF_BUF_NEED_BUF:
         hrq->RQ_no_posted_buf++;
         /* Post more buffers if possible */
         break;
     }
 out:
     return workposted;
 }
 
 /**
  * lpfc_sli4_fp_handle_cqe - Process fast-path work queue completion entry
  * @phba: adapter with cq
  * @cq: Pointer to the completion queue.
  * @cqe: 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.
  *
  * Return: true if work posted to worker thread, otherwise false.
  **/
 static bool
 lpfc_sli4_fp_handle_cqe(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_sli4_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:
     case CQE_CODE_NVME_ERSP:
         cq->CQ_wq++;
         /* Process the WQ complete event */
         phba->last_completion_time = jiffies;
         if (cq->subtype == LPFC_IO || cq->subtype == LPFC_NVME_LS)
             lpfc_sli4_fp_handle_fcp_wcqe(phba, cq,
                 (struct lpfc_wcqe_complete *)&wcqe);
         break;
     case CQE_CODE_RELEASE_WQE:
         cq->CQ_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:
         cq->CQ_xri_aborted++;
         /* Process the WQ XRI abort event */
         phba->last_completion_time = jiffies;
         workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq,
                 (struct sli4_wcqe_xri_aborted *)&wcqe);
         break;
     case CQE_CODE_RECEIVE_V1:
     case CQE_CODE_RECEIVE:
         phba->last_completion_time = jiffies;
         if (cq->subtype == LPFC_NVMET) {
             workposted = lpfc_sli4_nvmet_handle_rcqe(
                 phba, cq, (struct lpfc_rcqe *)&wcqe);
         }
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0144 Not a valid CQE code: x%x\n",
                 bf_get(lpfc_wcqe_c_code, &wcqe));
         break;
     }
     return workposted;
 }
 
 /**
  * lpfc_sli4_sched_cq_work - Schedules cq work
  * @phba: Pointer to HBA context object.
  * @cq: Pointer to CQ
  * @cqid: CQ ID
  *
  * This routine checks the poll mode of the CQ corresponding to
  * cq->chann, then either schedules a softirq or queue_work to complete
  * cq work.
  *
  * queue_work path is taken if in NVMET mode, or if poll_mode is in
  * LPFC_QUEUE_WORK mode.  Otherwise, softirq path is taken.
  *
  **/
 static void lpfc_sli4_sched_cq_work(struct lpfc_hba *phba,
                     struct lpfc_queue *cq, uint16_t cqid)
 {
     int ret = 0;
 
     switch (cq->poll_mode) {
     case LPFC_IRQ_POLL:
         /* CGN mgmt is mutually exclusive from softirq processing */
         if (phba->cmf_active_mode == LPFC_CFG_OFF) {
             irq_poll_sched(&cq->iop);
             break;
         }
         fallthrough;
     case LPFC_QUEUE_WORK:
     default:
         if (is_kdump_kernel())
             ret = queue_work(phba->wq, &cq->irqwork);
         else
             ret = queue_work_on(cq->chann, phba->wq, &cq->irqwork);
         if (!ret)
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0383 Cannot schedule queue work "
                     "for CQ eqcqid=%d, cqid=%d on CPU %d\n",
                     cqid, cq->queue_id,
                     raw_smp_processor_id());
     }
 }
 
 /**
  * lpfc_sli4_hba_handle_eqe - Process a fast-path event queue entry
  * @phba: Pointer to HBA context object.
  * @eq: Pointer to the queue structure.
  * @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_hba_handle_eqe(struct lpfc_hba *phba, struct lpfc_queue *eq,
              struct lpfc_eqe *eqe)
 {
     struct lpfc_queue *cq = NULL;
     uint32_t qidx = eq->hdwq;
     uint16_t cqid, id;
 
     if (unlikely(bf_get_le32(lpfc_eqe_major_code, eqe) != 0)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0366 Not a valid completion "
                 "event: majorcode=x%x, minorcode=x%x\n",
                 bf_get_le32(lpfc_eqe_major_code, eqe),
                 bf_get_le32(lpfc_eqe_minor_code, eqe));
         return;
     }
 
     /* Get the reference to the corresponding CQ */
     cqid = bf_get_le32(lpfc_eqe_resource_id, eqe);
 
     /* Use the fast lookup method first */
     if (cqid <= phba->sli4_hba.cq_max) {
         cq = phba->sli4_hba.cq_lookup[cqid];
         if (cq)
             goto  work_cq;
     }
 
     /* Next check for NVMET completion */
     if (phba->cfg_nvmet_mrq && phba->sli4_hba.nvmet_cqset) {
         id = phba->sli4_hba.nvmet_cqset[0]->queue_id;
         if ((cqid >= id) && (cqid < (id + phba->cfg_nvmet_mrq))) {
             /* Process NVMET unsol rcv */
             cq = phba->sli4_hba.nvmet_cqset[cqid - id];
             goto  process_cq;
         }
     }
 
     if (phba->sli4_hba.nvmels_cq &&
         (cqid == phba->sli4_hba.nvmels_cq->queue_id)) {
         /* Process NVME unsol rcv */
         cq = phba->sli4_hba.nvmels_cq;
     }
 
     /* Otherwise this is a Slow path event */
     if (cq == NULL) {
         lpfc_sli4_sp_handle_eqe(phba, eqe,
                     phba->sli4_hba.hdwq[qidx].hba_eq);
         return;
     }
 
 process_cq:
     if (unlikely(cqid != cq->queue_id)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0368 Miss-matched fast-path completion "
                 "queue identifier: eqcqid=%d, fcpcqid=%d\n",
                 cqid, cq->queue_id);
         return;
     }
 
 work_cq:
 #if defined(CONFIG_SCSI_LPFC_DEBUG_FS)
     if (phba->ktime_on)
         cq->isr_timestamp = ktime_get_ns();
     else
         cq->isr_timestamp = 0;
 #endif
     lpfc_sli4_sched_cq_work(phba, cq, cqid);
 }
 
 /**
  * __lpfc_sli4_hba_process_cq - Process a fast-path event queue entry
  * @cq: Pointer to CQ to be processed
  * @poll_mode: Enum lpfc_poll_state to determine poll mode
  *
  * This routine calls the cq processing routine with the handler for
  * fast path CQEs.
  *
  * The CQ routine returns two values: the first is the calling status,
  * which indicates whether work was queued to the  background discovery
  * thread. If true, the routine should wakeup the discovery thread;
  * the second is the delay parameter. If non-zero, rather than rearming
  * the CQ and yet another interrupt, the CQ handler should be queued so
  * that it is processed in a subsequent polling action. The value of
  * the delay indicates when to reschedule it.
  **/
 static void
 __lpfc_sli4_hba_process_cq(struct lpfc_queue *cq,
                enum lpfc_poll_mode poll_mode)
 {
     struct lpfc_hba *phba = cq->phba;
     unsigned long delay;
     bool workposted = false;
     int ret = 0;
 
     /* process and rearm the CQ */
     workposted |= __lpfc_sli4_process_cq(phba, cq, lpfc_sli4_fp_handle_cqe,
                          &delay, poll_mode);
 
     if (delay) {
         if (is_kdump_kernel())
             ret = queue_delayed_work(phba->wq, &cq->sched_irqwork,
                         delay);
         else
             ret = queue_delayed_work_on(cq->chann, phba->wq,
                         &cq->sched_irqwork, delay);
         if (!ret)
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0367 Cannot schedule queue work "
                     "for cqid=%d on CPU %d\n",
                     cq->queue_id, cq->chann);
     }
 
     /* wake up worker thread if there are works to be done */
     if (workposted)
         lpfc_worker_wake_up(phba);
 }
 
 /**
  * lpfc_sli4_hba_process_cq - fast-path work handler when started by
  *   interrupt
  * @work: pointer to work element
  *
  * translates from the work handler and calls the fast-path handler.
  **/
 static void
 lpfc_sli4_hba_process_cq(struct work_struct *work)
 {
     struct lpfc_queue *cq = container_of(work, struct lpfc_queue, irqwork);
 
     __lpfc_sli4_hba_process_cq(cq, LPFC_QUEUE_WORK);
 }
 
 /**
  * lpfc_sli4_dly_hba_process_cq - fast-path work handler when started by timer
  * @work: pointer to work element
  *
  * translates from the work handler and calls the fast-path handler.
  **/
 static void
 lpfc_sli4_dly_hba_process_cq(struct work_struct *work)
 {
     struct lpfc_queue *cq = container_of(to_delayed_work(work),
                     struct lpfc_queue, sched_irqwork);
 
     __lpfc_sli4_hba_process_cq(cq, LPFC_QUEUE_WORK);
 }
 
 /**
  * lpfc_sli4_hba_intr_handler - HBA 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.
  *
  * 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_hba_intr_handler(int irq, void *dev_id)
 {
     struct lpfc_hba *phba;
     struct lpfc_hba_eq_hdl *hba_eq_hdl;
     struct lpfc_queue *fpeq;
     unsigned long iflag;
     int ecount = 0;
     int hba_eqidx;
     struct lpfc_eq_intr_info *eqi;
 
     /* Get the driver's phba structure from the dev_id */
     hba_eq_hdl = (struct lpfc_hba_eq_hdl *)dev_id;
     phba = hba_eq_hdl->phba;
     hba_eqidx = hba_eq_hdl->idx;
 
     if (unlikely(!phba))
         return IRQ_NONE;
     if (unlikely(!phba->sli4_hba.hdwq))
         return IRQ_NONE;
 
     /* Get to the EQ struct associated with this vector */
     fpeq = phba->sli4_hba.hba_eq_hdl[hba_eqidx].eq;
     if (unlikely(!fpeq))
         return IRQ_NONE;
 
     /* 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_eqcq_flush(phba, fpeq);
         spin_unlock_irqrestore(&phba->hbalock, iflag);
         return IRQ_NONE;
     }
 
     eqi = this_cpu_ptr(phba->sli4_hba.eq_info);
     eqi->icnt++;
 
     fpeq->last_cpu = raw_smp_processor_id();
 
     if (eqi->icnt > LPFC_EQD_ISR_TRIGGER &&
         fpeq->q_flag & HBA_EQ_DELAY_CHK &&
         phba->cfg_auto_imax &&
         fpeq->q_mode != LPFC_MAX_AUTO_EQ_DELAY &&
         phba->sli.sli_flag & LPFC_SLI_USE_EQDR)
         lpfc_sli4_mod_hba_eq_delay(phba, fpeq, LPFC_MAX_AUTO_EQ_DELAY);
 
     /* process and rearm the EQ */
     ecount = lpfc_sli4_process_eq(phba, fpeq, LPFC_QUEUE_REARM);
 
     if (unlikely(ecount == 0)) {
         fpeq->EQ_no_entry++;
         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_hba_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 hba_irq_rc;
     bool hba_handled = false;
     int qidx;
 
     /* Get the driver's phba structure from the dev_id */
     phba = (struct lpfc_hba *)dev_id;
 
     if (unlikely(!phba))
         return IRQ_NONE;
 
     /*
      * Invoke fast-path host attention interrupt handling as appropriate.
      */
     for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
         hba_irq_rc = lpfc_sli4_hba_intr_handler(irq,
                     &phba->sli4_hba.hba_eq_hdl[qidx]);
         if (hba_irq_rc == IRQ_HANDLED)
             hba_handled |= true;
     }
 
     return (hba_handled == true) ? IRQ_HANDLED : IRQ_NONE;
 } /* lpfc_sli4_intr_handler */
 
 void lpfc_sli4_poll_hbtimer(struct timer_list *t)
 {
     struct lpfc_hba *phba = from_timer(phba, t, cpuhp_poll_timer);
     struct lpfc_queue *eq;
     int i = 0;
 
     rcu_read_lock();
 
     list_for_each_entry_rcu(eq, &phba->poll_list, _poll_list)
         i += lpfc_sli4_poll_eq(eq, LPFC_POLL_SLOWPATH);
     if (!list_empty(&phba->poll_list))
         mod_timer(&phba->cpuhp_poll_timer,
               jiffies + msecs_to_jiffies(LPFC_POLL_HB));
 
     rcu_read_unlock();
 }
 
 inline int lpfc_sli4_poll_eq(struct lpfc_queue *eq, uint8_t path)
 {
     struct lpfc_hba *phba = eq->phba;
     int i = 0;
 
     /*
      * Unlocking an irq is one of the entry point to check
      * for re-schedule, but we are good for io submission
      * path as midlayer does a get_cpu to glue us in. Flush
      * out the invalidate queue so we can see the updated
      * value for flag.
      */
     smp_rmb();
 
     if (READ_ONCE(eq->mode) == LPFC_EQ_POLL)
         /* We will not likely get the completion for the caller
          * during this iteration but i guess that's fine.
          * Future io's coming on this eq should be able to
          * pick it up.  As for the case of single io's, they
          * will be handled through a sched from polling timer
          * function which is currently triggered every 1msec.
          */
         i = lpfc_sli4_process_eq(phba, eq, LPFC_QUEUE_NOARM);
 
     return i;
 }
 
 static inline void lpfc_sli4_add_to_poll_list(struct lpfc_queue *eq)
 {
     struct lpfc_hba *phba = eq->phba;
 
     /* kickstart slowpath processing if needed */
     if (list_empty(&phba->poll_list))
         mod_timer(&phba->cpuhp_poll_timer,
               jiffies + msecs_to_jiffies(LPFC_POLL_HB));
 
     list_add_rcu(&eq->_poll_list, &phba->poll_list);
     synchronize_rcu();
 }
 
 static inline void lpfc_sli4_remove_from_poll_list(struct lpfc_queue *eq)
 {
     struct lpfc_hba *phba = eq->phba;
 
     /* Disable slowpath processing for this eq.  Kick start the eq
      * by RE-ARMING the eq's ASAP
      */
     list_del_rcu(&eq->_poll_list);
     synchronize_rcu();
 
     if (list_empty(&phba->poll_list))
         del_timer_sync(&phba->cpuhp_poll_timer);
 }
 
 void lpfc_sli4_cleanup_poll_list(struct lpfc_hba *phba)
 {
     struct lpfc_queue *eq, *next;
 
     list_for_each_entry_safe(eq, next, &phba->poll_list, _poll_list)
         list_del(&eq->_poll_list);
 
     INIT_LIST_HEAD(&phba->poll_list);
     synchronize_rcu();
 }
 
 static inline void
 __lpfc_sli4_switch_eqmode(struct lpfc_queue *eq, uint8_t mode)
 {
     if (mode == eq->mode)
         return;
     /*
      * currently this function is only called during a hotplug
      * event and the cpu on which this function is executing
      * is going offline.  By now the hotplug has instructed
      * the scheduler to remove this cpu from cpu active mask.
      * So we don't need to work about being put aside by the
      * scheduler for a high priority process.  Yes, the inte-
      * rrupts could come but they are known to retire ASAP.
      */
 
     /* Disable polling in the fastpath */
     WRITE_ONCE(eq->mode, mode);
     /* flush out the store buffer */
     smp_wmb();
 
     /*
      * Add this eq to the polling list and start polling. For
      * a grace period both interrupt handler and poller will
      * try to process the eq _but_ that's fine.  We have a
      * synchronization mechanism in place (queue_claimed) to
      * deal with it.  This is just a draining phase for int-
      * errupt handler (not eq's) as we have guranteed through
      * barrier that all the CPUs have seen the new CQ_POLLED
      * state. which will effectively disable the REARMING of
      * the EQ.  The whole idea is eq's die off eventually as
      * we are not rearming EQ's anymore.
      */
     mode ? lpfc_sli4_add_to_poll_list(eq) :
            lpfc_sli4_remove_from_poll_list(eq);
 }
 
 void lpfc_sli4_start_polling(struct lpfc_queue *eq)
 {
     __lpfc_sli4_switch_eqmode(eq, LPFC_EQ_POLL);
 }
 
 void lpfc_sli4_stop_polling(struct lpfc_queue *eq)
 {
     struct lpfc_hba *phba = eq->phba;
 
     __lpfc_sli4_switch_eqmode(eq, LPFC_EQ_INTERRUPT);
 
     /* Kick start for the pending io's in h/w.
      * Once we switch back to interrupt processing on a eq
      * the io path completion will only arm eq's when it
      * receives a completion.  But since eq's are in disa-
      * rmed state it doesn't receive a completion.  This
      * creates a deadlock scenaro.
      */
     phba->sli4_hba.sli4_write_eq_db(phba, eq, 0, LPFC_QUEUE_REARM);
 }
 
 /**
  * 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 memory 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;
 
     if (!list_empty(&queue->wq_list))
         list_del(&queue->wq_list);
 
     while (!list_empty(&queue->page_list)) {
         list_remove_head(&queue->page_list, dmabuf, struct lpfc_dmabuf,
                  list);
         dma_free_coherent(&queue->phba->pcidev->dev, queue->page_size,
                   dmabuf->virt, dmabuf->phys);
         kfree(dmabuf);
     }
     if (queue->rqbp) {
         lpfc_free_rq_buffer(queue->phba, queue);
         kfree(queue->rqbp);
     }
 
     if (!list_empty(&queue->cpu_list))
         list_del(&queue->cpu_list);
 
     kfree(queue);
     return;
 }
 
 /**
  * lpfc_sli4_queue_alloc - Allocate and initialize a queue structure
  * @phba: The HBA that this queue is being created on.
  * @page_size: The size of a queue page
  * @entry_size: The size of each queue entry for this queue.
  * @entry_count: The number of entries that this queue will handle.
  * @cpu: The cpu that will primarily utilize this queue.
  *
  * 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 page_size,
               uint32_t entry_size, uint32_t entry_count, int cpu)
 {
     struct lpfc_queue *queue;
     struct lpfc_dmabuf *dmabuf;
     uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
     uint16_t x, pgcnt;
 
     if (!phba->sli4_hba.pc_sli4_params.supported)
         hw_page_size = page_size;
 
     pgcnt = ALIGN(entry_size * entry_count, hw_page_size) / hw_page_size;
 
     /* If needed, Adjust page count to match the max the adapter supports */
     if (pgcnt > phba->sli4_hba.pc_sli4_params.wqpcnt)
         pgcnt = phba->sli4_hba.pc_sli4_params.wqpcnt;
 
     queue = kzalloc_node(sizeof(*queue) + (sizeof(void *) * pgcnt),
                  GFP_KERNEL, cpu_to_node(cpu));
     if (!queue)
         return NULL;
 
     INIT_LIST_HEAD(&queue->list);
     INIT_LIST_HEAD(&queue->_poll_list);
     INIT_LIST_HEAD(&queue->wq_list);
     INIT_LIST_HEAD(&queue->wqfull_list);
     INIT_LIST_HEAD(&queue->page_list);
     INIT_LIST_HEAD(&queue->child_list);
     INIT_LIST_HEAD(&queue->cpu_list);
 
     /* Set queue parameters now.  If the system cannot provide memory
      * resources, the free routine needs to know what was allocated.
      */
     queue->page_count = pgcnt;
     queue->q_pgs = (void **)&queue[1];
     queue->entry_cnt_per_pg = hw_page_size / entry_size;
     queue->entry_size = entry_size;
     queue->entry_count = entry_count;
     queue->page_size = hw_page_size;
     queue->phba = phba;
 
     for (x = 0; x < queue->page_count; x++) {
         dmabuf = kzalloc_node(sizeof(*dmabuf), GFP_KERNEL,
                       dev_to_node(&phba->pcidev->dev));
         if (!dmabuf)
             goto out_fail;
         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
                           hw_page_size, &dmabuf->phys,
                           GFP_KERNEL);
         if (!dmabuf->virt) {
             kfree(dmabuf);
             goto out_fail;
         }
         dmabuf->buffer_tag = x;
         list_add_tail(&dmabuf->list, &queue->page_list);
         /* use lpfc_sli4_qe to index a paritcular entry in this page */
         queue->q_pgs[x] = dmabuf->virt;
     }
     INIT_WORK(&queue->irqwork, lpfc_sli4_hba_process_cq);
     INIT_WORK(&queue->spwork, lpfc_sli4_sp_process_cq);
     INIT_DELAYED_WORK(&queue->sched_irqwork, lpfc_sli4_dly_hba_process_cq);
     INIT_DELAYED_WORK(&queue->sched_spwork, lpfc_sli4_dly_sp_process_cq);
 
     /* notify_interval will be set during q creation */
 
     return queue;
 out_fail:
     lpfc_sli4_queue_free(queue);
     return NULL;
 }
 
 /**
  * lpfc_dual_chute_pci_bar_map - Map pci base address register to host memory
  * @phba: HBA structure that indicates port to create a queue on.
  * @pci_barset: PCI BAR set flag.
  *
  * This function shall perform iomap of the specified PCI BAR address to host
  * memory address if not already done so and return it. The returned host
  * memory address can be NULL.
  */
 static void __iomem *
 lpfc_dual_chute_pci_bar_map(struct lpfc_hba *phba, uint16_t pci_barset)
 {
     if (!phba->pcidev)
         return NULL;
 
     switch (pci_barset) {
     case WQ_PCI_BAR_0_AND_1:
         return phba->pci_bar0_memmap_p;
     case WQ_PCI_BAR_2_AND_3:
         return phba->pci_bar2_memmap_p;
     case WQ_PCI_BAR_4_AND_5:
         return phba->pci_bar4_memmap_p;
     default:
         break;
     }
     return NULL;
 }
 
 /**
  * lpfc_modify_hba_eq_delay - Modify Delay Multiplier on EQs
  * @phba: HBA structure that EQs are on.
  * @startq: The starting EQ index to modify
  * @numq: The number of EQs (consecutive indexes) to modify
  * @usdelay: amount of delay
  *
  * This function revises the EQ delay on 1 or more EQs. The EQ delay
  * is set either by writing to a register (if supported by the SLI Port)
  * or by mailbox command. The mailbox command allows several EQs to be
  * updated at once.
  *
  * The @phba struct is used to send a mailbox command to HBA. The @startq
  * is used to get the starting EQ index to change. The @numq value is
  * used to specify how many consecutive EQ indexes, starting at EQ index,
  * are to be changed. This function is asynchronous and will wait for any
  * mailbox commands to finish before returning.
  *
  * On success this function will return a zero. If unable to allocate
  * enough memory this function will return -ENOMEM. If a mailbox command
  * fails this function will return -ENXIO. Note: on ENXIO, some EQs may
  * have had their delay multipler changed.
  **/
 void
 lpfc_modify_hba_eq_delay(struct lpfc_hba *phba, uint32_t startq,
              uint32_t numq, uint32_t usdelay)
 {
     struct lpfc_mbx_modify_eq_delay *eq_delay;
     LPFC_MBOXQ_t *mbox;
     struct lpfc_queue *eq;
     int cnt = 0, rc, length;
     uint32_t shdr_status, shdr_add_status;
     uint32_t dmult;
     int qidx;
     union lpfc_sli4_cfg_shdr *shdr;
 
     if (startq >= phba->cfg_irq_chann)
         return;
 
     if (usdelay > 0xFFFF) {
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP | LOG_NVME,
                 "6429 usdelay %d too large. Scaled down to "
                 "0xFFFF.\n", usdelay);
         usdelay = 0xFFFF;
     }
 
     /* set values by EQ_DELAY register if supported */
     if (phba->sli.sli_flag & LPFC_SLI_USE_EQDR) {
         for (qidx = startq; qidx < phba->cfg_irq_chann; qidx++) {
             eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
             if (!eq)
                 continue;
 
             lpfc_sli4_mod_hba_eq_delay(phba, eq, usdelay);
 
             if (++cnt >= numq)
                 break;
         }
         return;
     }
 
     /* Otherwise, set values by mailbox cmd */
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "6428 Failed allocating mailbox cmd buffer."
                 " EQ delay was not set.\n");
         return;
     }
     length = (sizeof(struct lpfc_mbx_modify_eq_delay) -
           sizeof(struct lpfc_sli4_cfg_mhdr));
     lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
              LPFC_MBOX_OPCODE_MODIFY_EQ_DELAY,
              length, LPFC_SLI4_MBX_EMBED);
     eq_delay = &mbox->u.mqe.un.eq_delay;
 
     /* Calculate delay multiper from maximum interrupt per second */
     dmult = (usdelay * LPFC_DMULT_CONST) / LPFC_SEC_TO_USEC;
     if (dmult)
         dmult--;
     if (dmult > LPFC_DMULT_MAX)
         dmult = LPFC_DMULT_MAX;
 
     for (qidx = startq; qidx < phba->cfg_irq_chann; qidx++) {
         eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
         if (!eq)
             continue;
         eq->q_mode = usdelay;
         eq_delay->u.request.eq[cnt].eq_id = eq->queue_id;
         eq_delay->u.request.eq[cnt].phase = 0;
         eq_delay->u.request.eq[cnt].delay_multi = dmult;
 
         if (++cnt >= numq)
             break;
     }
     eq_delay->u.request.num_eq = cnt;
 
     mbox->vport = phba->pport;
     mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
     mbox->ctx_ndlp = NULL;
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
     shdr = (union lpfc_sli4_cfg_shdr *) &eq_delay->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_TRACE_EVENT,
                 "2512 MODIFY_EQ_DELAY mailbox failed with "
                 "status x%x add_status x%x, mbx status x%x\n",
                 shdr_status, shdr_add_status, rc);
     }
     mempool_free(mbox, phba->mbox_mem_pool);
     return;
 }
 
 /**
  * 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.
  **/
 int
 lpfc_eq_create(struct lpfc_hba *phba, struct lpfc_queue *eq, uint32_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;
     uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
 
     /* sanity check on queue memory */
     if (!eq)
         return -ENODEV;
     if (!phba->sli4_hba.pc_sli4_params.supported)
         hw_page_size = SLI4_PAGE_SIZE;
 
     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;
     shdr = (union lpfc_sli4_cfg_shdr *) &eq_create->header.cfg_shdr;
     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);
 
     /* Use version 2 of CREATE_EQ if eqav is set */
     if (phba->sli4_hba.pc_sli4_params.eqav) {
         bf_set(lpfc_mbox_hdr_version, &shdr->request,
                LPFC_Q_CREATE_VERSION_2);
         bf_set(lpfc_eq_context_autovalid, &eq_create->u.request.context,
                phba->sli4_hba.pc_sli4_params.eqav);
     }
 
     /* don't setup delay multiplier using EQ_CREATE */
     dmult = 0;
     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_TRACE_EVENT,
                 "0360 Unsupported EQ count. (%d)\n",
                 eq->entry_count);
         if (eq->entry_count < 256) {
             status = -EINVAL;
             goto out;
         }
         fallthrough;    /* otherwise default to smallest count */
     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) {
         memset(dmabuf->virt, 0, hw_page_size);
         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->ctx_buf = NULL;
     mbox->ctx_ndlp = NULL;
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
     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_TRACE_EVENT,
                 "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->notify_interval = LPFC_EQ_NOTIFY_INTRVL;
     eq->max_proc_limit = LPFC_EQ_MAX_PROC_LIMIT;
 out:
     mempool_free(mbox, phba->mbox_mem_pool);
     return status;
 }
 
 static int lpfc_cq_poll_hdler(struct irq_poll *iop, int budget)
 {
     struct lpfc_queue *cq = container_of(iop, struct lpfc_queue, iop);
 
     __lpfc_sli4_hba_process_cq(cq, LPFC_IRQ_POLL);
 
     return 1;
 }
 
 /**
  * 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.
  * @type: Type of queue (EQ, GCQ, MCQ, WCQ, etc).
  * @subtype: Functional purpose of the queue (MBOX, IO, ELS, NVMET, etc).
  *
  * 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.
  **/
 int
 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;
 
     /* sanity check on queue memory */
     if (!cq || !eq)
         return -ENODEV;
 
     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;
     shdr = (union lpfc_sli4_cfg_shdr *) &cq_create->header.cfg_shdr;
     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_mbox_hdr_version, &shdr->request,
            phba->sli4_hba.pc_sli4_params.cqv);
     if (phba->sli4_hba.pc_sli4_params.cqv == LPFC_Q_CREATE_VERSION_2) {
         bf_set(lpfc_mbx_cq_create_page_size, &cq_create->u.request,
                (cq->page_size / SLI4_PAGE_SIZE));
         bf_set(lpfc_cq_eq_id_2, &cq_create->u.request.context,
                eq->queue_id);
         bf_set(lpfc_cq_context_autovalid, &cq_create->u.request.context,
                phba->sli4_hba.pc_sli4_params.cqav);
     } else {
         bf_set(lpfc_cq_eq_id, &cq_create->u.request.context,
                eq->queue_id);
     }
     switch (cq->entry_count) {
     case 2048:
     case 4096:
         if (phba->sli4_hba.pc_sli4_params.cqv ==
             LPFC_Q_CREATE_VERSION_2) {
             cq_create->u.request.context.lpfc_cq_context_count =
                 cq->entry_count;
             bf_set(lpfc_cq_context_count,
                    &cq_create->u.request.context,
                    LPFC_CQ_CNT_WORD7);
             break;
         }
         fallthrough;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0361 Unsupported CQ count: "
                 "entry cnt %d sz %d pg cnt %d\n",
                 cq->entry_count, cq->entry_size,
                 cq->page_count);
         if (cq->entry_count < 256) {
             status = -EINVAL;
             goto out;
         }
         fallthrough;    /* otherwise default to smallest count */
     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) {
         memset(dmabuf->virt, 0, cq->page_size);
         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_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_TRACE_EVENT,
                 "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->assoc_qid = eq->queue_id;
     cq->assoc_qp = eq;
     cq->host_index = 0;
     cq->notify_interval = LPFC_CQ_NOTIFY_INTRVL;
     cq->max_proc_limit = min(phba->cfg_cq_max_proc_limit, cq->entry_count);
 
     if (cq->queue_id > phba->sli4_hba.cq_max)
         phba->sli4_hba.cq_max = cq->queue_id;
 
     irq_poll_init(&cq->iop, LPFC_IRQ_POLL_WEIGHT, lpfc_cq_poll_hdler);
 out:
     mempool_free(mbox, phba->mbox_mem_pool);
     return status;
 }
 
 /**
  * lpfc_cq_create_set - Create a set of Completion Queues on the HBA for MRQ
  * @phba: HBA structure that indicates port to create a queue on.
  * @cqp: The queue structure array to use to create the completion queues.
  * @hdwq: The hardware queue array  with the EQ to bind completion queues to.
  * @type: Type of queue (EQ, GCQ, MCQ, WCQ, etc).
  * @subtype: Functional purpose of the queue (MBOX, IO, ELS, NVMET, etc).
  *
  * This function creates a set of  completion queue, s to support MRQ
  * as detailed in @cqp, on a port,
  * described by @phba by sending a CREATE_CQ_SET 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 CREATE_CQ_SET 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.
  **/
 int
 lpfc_cq_create_set(struct lpfc_hba *phba, struct lpfc_queue **cqp,
            struct lpfc_sli4_hdw_queue *hdwq, uint32_t type,
            uint32_t subtype)
 {
     struct lpfc_queue *cq;
     struct lpfc_queue *eq;
     struct lpfc_mbx_cq_create_set *cq_set;
     struct lpfc_dmabuf *dmabuf;
     LPFC_MBOXQ_t *mbox;
     int rc, length, alloclen, status = 0;
     int cnt, idx, numcq, page_idx = 0;
     uint32_t shdr_status, shdr_add_status;
     union lpfc_sli4_cfg_shdr *shdr;
     uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
 
     /* sanity check on queue memory */
     numcq = phba->cfg_nvmet_mrq;
     if (!cqp || !hdwq || !numcq)
         return -ENODEV;
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox)
         return -ENOMEM;
 
     length = sizeof(struct lpfc_mbx_cq_create_set);
     length += ((numcq * cqp[0]->page_count) *
            sizeof(struct dma_address));
     alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
             LPFC_MBOX_OPCODE_FCOE_CQ_CREATE_SET, length,
             LPFC_SLI4_MBX_NEMBED);
     if (alloclen < length) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3098 Allocated DMA memory size (%d) is "
                 "less than the requested DMA memory size "
                 "(%d)\n", alloclen, length);
         status = -ENOMEM;
         goto out;
     }
     cq_set = mbox->sge_array->addr[0];
     shdr = (union lpfc_sli4_cfg_shdr *)&cq_set->cfg_shdr;
     bf_set(lpfc_mbox_hdr_version, &shdr->request, 0);
 
     for (idx = 0; idx < numcq; idx++) {
         cq = cqp[idx];
         eq = hdwq[idx].hba_eq;
         if (!cq || !eq) {
             status = -ENOMEM;
             goto out;
         }
         if (!phba->sli4_hba.pc_sli4_params.supported)
             hw_page_size = cq->page_size;
 
         switch (idx) {
         case 0:
             bf_set(lpfc_mbx_cq_create_set_page_size,
                    &cq_set->u.request,
                    (hw_page_size / SLI4_PAGE_SIZE));
             bf_set(lpfc_mbx_cq_create_set_num_pages,
                    &cq_set->u.request, cq->page_count);
             bf_set(lpfc_mbx_cq_create_set_evt,
                    &cq_set->u.request, 1);
             bf_set(lpfc_mbx_cq_create_set_valid,
                    &cq_set->u.request, 1);
             bf_set(lpfc_mbx_cq_create_set_cqe_size,
                    &cq_set->u.request, 0);
             bf_set(lpfc_mbx_cq_create_set_num_cq,
                    &cq_set->u.request, numcq);
             bf_set(lpfc_mbx_cq_create_set_autovalid,
                    &cq_set->u.request,
                    phba->sli4_hba.pc_sli4_params.cqav);
             switch (cq->entry_count) {
             case 2048:
             case 4096:
                 if (phba->sli4_hba.pc_sli4_params.cqv ==
                     LPFC_Q_CREATE_VERSION_2) {
                     bf_set(lpfc_mbx_cq_create_set_cqe_cnt,
                            &cq_set->u.request,
                         cq->entry_count);
                     bf_set(lpfc_mbx_cq_create_set_cqe_cnt,
                            &cq_set->u.request,
                            LPFC_CQ_CNT_WORD7);
                     break;
                 }
                 fallthrough;
             default:
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "3118 Bad CQ count. (%d)\n",
                         cq->entry_count);
                 if (cq->entry_count < 256) {
                     status = -EINVAL;
                     goto out;
                 }
                 fallthrough;    /* otherwise default to smallest */
             case 256:
                 bf_set(lpfc_mbx_cq_create_set_cqe_cnt,
                        &cq_set->u.request, LPFC_CQ_CNT_256);
                 break;
             case 512:
                 bf_set(lpfc_mbx_cq_create_set_cqe_cnt,
                        &cq_set->u.request, LPFC_CQ_CNT_512);
                 break;
             case 1024:
                 bf_set(lpfc_mbx_cq_create_set_cqe_cnt,
                        &cq_set->u.request, LPFC_CQ_CNT_1024);
                 break;
             }
             bf_set(lpfc_mbx_cq_create_set_eq_id0,
                    &cq_set->u.request, eq->queue_id);
             break;
         case 1:
             bf_set(lpfc_mbx_cq_create_set_eq_id1,
                    &cq_set->u.request, eq->queue_id);
             break;
         case 2:
             bf_set(lpfc_mbx_cq_create_set_eq_id2,
                    &cq_set->u.request, eq->queue_id);
             break;
         case 3:
             bf_set(lpfc_mbx_cq_create_set_eq_id3,
                    &cq_set->u.request, eq->queue_id);
             break;
         case 4:
             bf_set(lpfc_mbx_cq_create_set_eq_id4,
                    &cq_set->u.request, eq->queue_id);
             break;
         case 5:
             bf_set(lpfc_mbx_cq_create_set_eq_id5,
                    &cq_set->u.request, eq->queue_id);
             break;
         case 6:
             bf_set(lpfc_mbx_cq_create_set_eq_id6,
                    &cq_set->u.request, eq->queue_id);
             break;
         case 7:
             bf_set(lpfc_mbx_cq_create_set_eq_id7,
                    &cq_set->u.request, eq->queue_id);
             break;
         case 8:
             bf_set(lpfc_mbx_cq_create_set_eq_id8,
                    &cq_set->u.request, eq->queue_id);
             break;
         case 9:
             bf_set(lpfc_mbx_cq_create_set_eq_id9,
                    &cq_set->u.request, eq->queue_id);
             break;
         case 10:
             bf_set(lpfc_mbx_cq_create_set_eq_id10,
                    &cq_set->u.request, eq->queue_id);
             break;
         case 11:
             bf_set(lpfc_mbx_cq_create_set_eq_id11,
                    &cq_set->u.request, eq->queue_id);
             break;
         case 12:
             bf_set(lpfc_mbx_cq_create_set_eq_id12,
                    &cq_set->u.request, eq->queue_id);
             break;
         case 13:
             bf_set(lpfc_mbx_cq_create_set_eq_id13,
                    &cq_set->u.request, eq->queue_id);
             break;
         case 14:
             bf_set(lpfc_mbx_cq_create_set_eq_id14,
                    &cq_set->u.request, eq->queue_id);
             break;
         case 15:
             bf_set(lpfc_mbx_cq_create_set_eq_id15,
                    &cq_set->u.request, eq->queue_id);
             break;
         }
 
         /* 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->assoc_qid = eq->queue_id;
         cq->assoc_qp = eq;
         cq->host_index = 0;
         cq->notify_interval = LPFC_CQ_NOTIFY_INTRVL;
         cq->max_proc_limit = min(phba->cfg_cq_max_proc_limit,
                      cq->entry_count);
         cq->chann = idx;
 
         rc = 0;
         list_for_each_entry(dmabuf, &cq->page_list, list) {
             memset(dmabuf->virt, 0, hw_page_size);
             cnt = page_idx + dmabuf->buffer_tag;
             cq_set->u.request.page[cnt].addr_lo =
                     putPaddrLow(dmabuf->phys);
             cq_set->u.request.page[cnt].addr_hi =
                     putPaddrHigh(dmabuf->phys);
             rc++;
         }
         page_idx += rc;
     }
 
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
 
     /* The IOCTL status is embedded in the mailbox subheader. */
     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_TRACE_EVENT,
                 "3119 CQ_CREATE_SET 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;
     }
     rc = bf_get(lpfc_mbx_cq_create_set_base_id, &cq_set->u.response);
     if (rc == 0xFFFF) {
         status = -ENXIO;
         goto out;
     }
 
     for (idx = 0; idx < numcq; idx++) {
         cq = cqp[idx];
         cq->queue_id = rc + idx;
         if (cq->queue_id > phba->sli4_hba.cq_max)
             phba->sli4_hba.cq_max = cq->queue_id;
     }
 
 out:
     lpfc_sli4_mbox_cmd_free(phba, mbox);
     return status;
 }
 
 /**
  * lpfc_mq_create_fb_init - Send MCC_CREATE without async events registration
  * @phba: HBA structure that indicates port to create a queue on.
  * @mq: The queue structure to use to create the mailbox queue.
  * @mbox: An allocated pointer to type LPFC_MBOXQ_t
  * @cq: The completion queue to associate with this cq.
  *
  * This function provides failback (fb) functionality when the
  * mq_create_ext fails on older FW generations.  It's purpose is identical
  * to mq_create_ext otherwise.
  *
  * This routine cannot fail as all attributes were previously accessed and
  * initialized in mq_create_ext.
  **/
 static void
 lpfc_mq_create_fb_init(struct lpfc_hba *phba, struct lpfc_queue *mq,
                LPFC_MBOXQ_t *mbox, struct lpfc_queue *cq)
 {
     struct lpfc_mbx_mq_create *mq_create;
     struct lpfc_dmabuf *dmabuf;
     int length;
 
     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) {
     case 16:
         bf_set(lpfc_mq_context_ring_size, &mq_create->u.request.context,
                LPFC_MQ_RING_SIZE_16);
         break;
     case 32:
         bf_set(lpfc_mq_context_ring_size, &mq_create->u.request.context,
                LPFC_MQ_RING_SIZE_32);
         break;
     case 64:
         bf_set(lpfc_mq_context_ring_size, &mq_create->u.request.context,
                LPFC_MQ_RING_SIZE_64);
         break;
     case 128:
         bf_set(lpfc_mq_context_ring_size, &mq_create->u.request.context,
                LPFC_MQ_RING_SIZE_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);
     }
 }
 
 /**
  * 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.
  * @cq: The completion queue to associate with this cq.
  * @subtype: The queue's subtype.
  *
  * 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.
  **/
 int32_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_mbx_mq_create_ext *mq_create_ext;
     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;
     uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
 
     /* sanity check on queue memory */
     if (!mq || !cq)
         return -ENODEV;
     if (!phba->sli4_hba.pc_sli4_params.supported)
         hw_page_size = SLI4_PAGE_SIZE;
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox)
         return -ENOMEM;
     length = (sizeof(struct lpfc_mbx_mq_create_ext) -
           sizeof(struct lpfc_sli4_cfg_mhdr));
     lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
              LPFC_MBOX_OPCODE_MQ_CREATE_EXT,
              length, LPFC_SLI4_MBX_EMBED);
 
     mq_create_ext = &mbox->u.mqe.un.mq_create_ext;
     shdr = (union lpfc_sli4_cfg_shdr *) &mq_create_ext->header.cfg_shdr;
     bf_set(lpfc_mbx_mq_create_ext_num_pages,
            &mq_create_ext->u.request, mq->page_count);
     bf_set(lpfc_mbx_mq_create_ext_async_evt_link,
            &mq_create_ext->u.request, 1);
     bf_set(lpfc_mbx_mq_create_ext_async_evt_fip,
            &mq_create_ext->u.request, 1);
     bf_set(lpfc_mbx_mq_create_ext_async_evt_group5,
            &mq_create_ext->u.request, 1);
     bf_set(lpfc_mbx_mq_create_ext_async_evt_fc,
            &mq_create_ext->u.request, 1);
     bf_set(lpfc_mbx_mq_create_ext_async_evt_sli,
            &mq_create_ext->u.request, 1);
     bf_set(lpfc_mq_context_valid, &mq_create_ext->u.request.context, 1);
     bf_set(lpfc_mbox_hdr_version, &shdr->request,
            phba->sli4_hba.pc_sli4_params.mqv);
     if (phba->sli4_hba.pc_sli4_params.mqv == LPFC_Q_CREATE_VERSION_1)
         bf_set(lpfc_mbx_mq_create_ext_cq_id, &mq_create_ext->u.request,
                cq->queue_id);
     else
         bf_set(lpfc_mq_context_cq_id, &mq_create_ext->u.request.context,
                cq->queue_id);
     switch (mq->entry_count) {
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0362 Unsupported MQ count. (%d)\n",
                 mq->entry_count);
         if (mq->entry_count < 16) {
             status = -EINVAL;
             goto out;
         }
         fallthrough;    /* otherwise default to smallest count */
     case 16:
         bf_set(lpfc_mq_context_ring_size,
                &mq_create_ext->u.request.context,
                LPFC_MQ_RING_SIZE_16);
         break;
     case 32:
         bf_set(lpfc_mq_context_ring_size,
                &mq_create_ext->u.request.context,
                LPFC_MQ_RING_SIZE_32);
         break;
     case 64:
         bf_set(lpfc_mq_context_ring_size,
                &mq_create_ext->u.request.context,
                LPFC_MQ_RING_SIZE_64);
         break;
     case 128:
         bf_set(lpfc_mq_context_ring_size,
                &mq_create_ext->u.request.context,
                LPFC_MQ_RING_SIZE_128);
         break;
     }
     list_for_each_entry(dmabuf, &mq->page_list, list) {
         memset(dmabuf->virt, 0, hw_page_size);
         mq_create_ext->u.request.page[dmabuf->buffer_tag].addr_lo =
                     putPaddrLow(dmabuf->phys);
         mq_create_ext->u.request.page[dmabuf->buffer_tag].addr_hi =
                     putPaddrHigh(dmabuf->phys);
     }
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
     mq->queue_id = bf_get(lpfc_mbx_mq_create_q_id,
                   &mq_create_ext->u.response);
     if (rc != MBX_SUCCESS) {
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "2795 MQ_CREATE_EXT failed with "
                 "status x%x. Failback to MQ_CREATE.\n",
                 rc);
         lpfc_mq_create_fb_init(phba, mq, mbox, cq);
         mq_create = &mbox->u.mqe.un.mq_create;
         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
         shdr = (union lpfc_sli4_cfg_shdr *) &mq_create->header.cfg_shdr;
         mq->queue_id = bf_get(lpfc_mbx_mq_create_q_id,
                       &mq_create->u.response);
     }
 
     /* The IOCTL status is embedded in the mailbox subheader. */
     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_TRACE_EVENT,
                 "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;
     }
     if (mq->queue_id == 0xFFFF) {
         status = -ENXIO;
         goto out;
     }
     mq->type = LPFC_MQ;
     mq->assoc_qid = cq->queue_id;
     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:
     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.
  **/
 int
 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;
     uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
     struct dma_address *page;
     void __iomem *bar_memmap_p;
     uint32_t db_offset;
     uint16_t pci_barset;
     uint8_t dpp_barset;
     uint32_t dpp_offset;
     uint8_t wq_create_version;
 #ifdef CONFIG_X86
     unsigned long pg_addr;
 #endif
 
     /* sanity check on queue memory */
     if (!wq || !cq)
         return -ENODEV;
     if (!phba->sli4_hba.pc_sli4_params.supported)
         hw_page_size = wq->page_size;
 
     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;
     shdr = (union lpfc_sli4_cfg_shdr *) &wq_create->header.cfg_shdr;
     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);
 
     /* wqv is the earliest version supported, NOT the latest */
     bf_set(lpfc_mbox_hdr_version, &shdr->request,
            phba->sli4_hba.pc_sli4_params.wqv);
 
     if ((phba->sli4_hba.pc_sli4_params.wqsize & LPFC_WQ_SZ128_SUPPORT) ||
         (wq->page_size > SLI4_PAGE_SIZE))
         wq_create_version = LPFC_Q_CREATE_VERSION_1;
     else
         wq_create_version = LPFC_Q_CREATE_VERSION_0;
 
     switch (wq_create_version) {
     case LPFC_Q_CREATE_VERSION_1:
         bf_set(lpfc_mbx_wq_create_wqe_count, &wq_create->u.request_1,
                wq->entry_count);
         bf_set(lpfc_mbox_hdr_version, &shdr->request,
                LPFC_Q_CREATE_VERSION_1);
 
         switch (wq->entry_size) {
         default:
         case 64:
             bf_set(lpfc_mbx_wq_create_wqe_size,
                    &wq_create->u.request_1,
                    LPFC_WQ_WQE_SIZE_64);
             break;
         case 128:
             bf_set(lpfc_mbx_wq_create_wqe_size,
                    &wq_create->u.request_1,
                    LPFC_WQ_WQE_SIZE_128);
             break;
         }
         /* Request DPP by default */
         bf_set(lpfc_mbx_wq_create_dpp_req, &wq_create->u.request_1, 1);
         bf_set(lpfc_mbx_wq_create_page_size,
                &wq_create->u.request_1,
                (wq->page_size / SLI4_PAGE_SIZE));
         page = wq_create->u.request_1.page;
         break;
     default:
         page = wq_create->u.request.page;
         break;
     }
 
     list_for_each_entry(dmabuf, &wq->page_list, list) {
         memset(dmabuf->virt, 0, hw_page_size);
         page[dmabuf->buffer_tag].addr_lo = putPaddrLow(dmabuf->phys);
         page[dmabuf->buffer_tag].addr_hi = putPaddrHigh(dmabuf->phys);
     }
 
     if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE)
         bf_set(lpfc_mbx_wq_create_dua, &wq_create->u.request, 1);
 
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
     /* The IOCTL status is embedded in the mailbox subheader. */
     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_TRACE_EVENT,
                 "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;
     }
 
     if (wq_create_version == LPFC_Q_CREATE_VERSION_0)
         wq->queue_id = bf_get(lpfc_mbx_wq_create_q_id,
                     &wq_create->u.response);
     else
         wq->queue_id = bf_get(lpfc_mbx_wq_create_v1_q_id,
                     &wq_create->u.response_1);
 
     if (wq->queue_id == 0xFFFF) {
         status = -ENXIO;
         goto out;
     }
 
     wq->db_format = LPFC_DB_LIST_FORMAT;
     if (wq_create_version == LPFC_Q_CREATE_VERSION_0) {
         if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE) {
             wq->db_format = bf_get(lpfc_mbx_wq_create_db_format,
                            &wq_create->u.response);
             if ((wq->db_format != LPFC_DB_LIST_FORMAT) &&
                 (wq->db_format != LPFC_DB_RING_FORMAT)) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "3265 WQ[%d] doorbell format "
                         "not supported: x%x\n",
                         wq->queue_id, wq->db_format);
                 status = -EINVAL;
                 goto out;
             }
             pci_barset = bf_get(lpfc_mbx_wq_create_bar_set,
                         &wq_create->u.response);
             bar_memmap_p = lpfc_dual_chute_pci_bar_map(phba,
                                    pci_barset);
             if (!bar_memmap_p) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "3263 WQ[%d] failed to memmap "
                         "pci barset:x%x\n",
                         wq->queue_id, pci_barset);
                 status = -ENOMEM;
                 goto out;
             }
             db_offset = wq_create->u.response.doorbell_offset;
             if ((db_offset != LPFC_ULP0_WQ_DOORBELL) &&
                 (db_offset != LPFC_ULP1_WQ_DOORBELL)) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "3252 WQ[%d] doorbell offset "
                         "not supported: x%x\n",
                         wq->queue_id, db_offset);
                 status = -EINVAL;
                 goto out;
             }
             wq->db_regaddr = bar_memmap_p + db_offset;
             lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                     "3264 WQ[%d]: barset:x%x, offset:x%x, "
                     "format:x%x\n", wq->queue_id,
                     pci_barset, db_offset, wq->db_format);
         } else
             wq->db_regaddr = phba->sli4_hba.WQDBregaddr;
     } else {
         /* Check if DPP was honored by the firmware */
         wq->dpp_enable = bf_get(lpfc_mbx_wq_create_dpp_rsp,
                     &wq_create->u.response_1);
         if (wq->dpp_enable) {
             pci_barset = bf_get(lpfc_mbx_wq_create_v1_bar_set,
                         &wq_create->u.response_1);
             bar_memmap_p = lpfc_dual_chute_pci_bar_map(phba,
                                    pci_barset);
             if (!bar_memmap_p) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "3267 WQ[%d] failed to memmap "
                         "pci barset:x%x\n",
                         wq->queue_id, pci_barset);
                 status = -ENOMEM;
                 goto out;
             }
             db_offset = wq_create->u.response_1.doorbell_offset;
             wq->db_regaddr = bar_memmap_p + db_offset;
             wq->dpp_id = bf_get(lpfc_mbx_wq_create_dpp_id,
                         &wq_create->u.response_1);
             dpp_barset = bf_get(lpfc_mbx_wq_create_dpp_bar,
                         &wq_create->u.response_1);
             bar_memmap_p = lpfc_dual_chute_pci_bar_map(phba,
                                    dpp_barset);
             if (!bar_memmap_p) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "3268 WQ[%d] failed to memmap "
                         "pci barset:x%x\n",
                         wq->queue_id, dpp_barset);
                 status = -ENOMEM;
                 goto out;
             }
             dpp_offset = wq_create->u.response_1.dpp_offset;
             wq->dpp_regaddr = bar_memmap_p + dpp_offset;
             lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                     "3271 WQ[%d]: barset:x%x, offset:x%x, "
                     "dpp_id:x%x dpp_barset:x%x "
                     "dpp_offset:x%x\n",
                     wq->queue_id, pci_barset, db_offset,
                     wq->dpp_id, dpp_barset, dpp_offset);
 
 #ifdef CONFIG_X86
             /* Enable combined writes for DPP aperture */
             pg_addr = (unsigned long)(wq->dpp_regaddr) & PAGE_MASK;
             rc = set_memory_wc(pg_addr, 1);
             if (rc) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                     "3272 Cannot setup Combined "
                     "Write on WQ[%d] - disable DPP\n",
                     wq->queue_id);
                 phba->cfg_enable_dpp = 0;
             }
 #else
             phba->cfg_enable_dpp = 0;
 #endif
         } else
             wq->db_regaddr = phba->sli4_hba.WQDBregaddr;
     }
     wq->pring = kzalloc(sizeof(struct lpfc_sli_ring), GFP_KERNEL);
     if (wq->pring == NULL) {
         status = -ENOMEM;
         goto out;
     }
     wq->type = LPFC_WQ;
     wq->assoc_qid = cq->queue_id;
     wq->subtype = subtype;
     wq->host_index = 0;
     wq->hba_index = 0;
     wq->notify_interval = LPFC_WQ_NOTIFY_INTRVL;
 
     /* link the wq onto the parent cq child list */
     list_add_tail(&wq->list, &cq->child_list);
 out:
     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.
  * @subtype: The subtype of the work queue indicating its functionality.
  *
  * 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.
  **/
 int
 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;
     uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
     void __iomem *bar_memmap_p;
     uint32_t db_offset;
     uint16_t pci_barset;
 
     /* sanity check on queue memory */
     if (!hrq || !drq || !cq)
         return -ENODEV;
     if (!phba->sli4_hba.pc_sli4_params.supported)
         hw_page_size = SLI4_PAGE_SIZE;
 
     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;
     shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr;
     bf_set(lpfc_mbox_hdr_version, &shdr->request,
            phba->sli4_hba.pc_sli4_params.rqv);
     if (phba->sli4_hba.pc_sli4_params.rqv == LPFC_Q_CREATE_VERSION_1) {
         bf_set(lpfc_rq_context_rqe_count_1,
                &rq_create->u.request.context,
                hrq->entry_count);
         rq_create->u.request.context.buffer_size = LPFC_HDR_BUF_SIZE;
         bf_set(lpfc_rq_context_rqe_size,
                &rq_create->u.request.context,
                LPFC_RQE_SIZE_8);
         bf_set(lpfc_rq_context_page_size,
                &rq_create->u.request.context,
                LPFC_RQ_PAGE_SIZE_4096);
     } else {
         switch (hrq->entry_count) {
         default:
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2535 Unsupported RQ count. (%d)\n",
                     hrq->entry_count);
             if (hrq->entry_count < 512) {
                 status = -EINVAL;
                 goto out;
             }
             fallthrough;    /* otherwise default to smallest count */
         case 512:
             bf_set(lpfc_rq_context_rqe_count,
                    &rq_create->u.request.context,
                    LPFC_RQ_RING_SIZE_512);
             break;
         case 1024:
             bf_set(lpfc_rq_context_rqe_count,
                    &rq_create->u.request.context,
                    LPFC_RQ_RING_SIZE_1024);
             break;
         case 2048:
             bf_set(lpfc_rq_context_rqe_count,
                    &rq_create->u.request.context,
                    LPFC_RQ_RING_SIZE_2048);
             break;
         case 4096:
             bf_set(lpfc_rq_context_rqe_count,
                    &rq_create->u.request.context,
                    LPFC_RQ_RING_SIZE_4096);
             break;
         }
         bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context,
                LPFC_HDR_BUF_SIZE);
     }
     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);
     list_for_each_entry(dmabuf, &hrq->page_list, list) {
         memset(dmabuf->virt, 0, hw_page_size);
         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);
     }
     if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE)
         bf_set(lpfc_mbx_rq_create_dua, &rq_create->u.request, 1);
 
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
     /* The IOCTL status is embedded in the mailbox subheader. */
     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_TRACE_EVENT,
                 "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;
     }
 
     if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE) {
         hrq->db_format = bf_get(lpfc_mbx_rq_create_db_format,
                     &rq_create->u.response);
         if ((hrq->db_format != LPFC_DB_LIST_FORMAT) &&
             (hrq->db_format != LPFC_DB_RING_FORMAT)) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "3262 RQ [%d] doorbell format not "
                     "supported: x%x\n", hrq->queue_id,
                     hrq->db_format);
             status = -EINVAL;
             goto out;
         }
 
         pci_barset = bf_get(lpfc_mbx_rq_create_bar_set,
                     &rq_create->u.response);
         bar_memmap_p = lpfc_dual_chute_pci_bar_map(phba, pci_barset);
         if (!bar_memmap_p) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "3269 RQ[%d] failed to memmap pci "
                     "barset:x%x\n", hrq->queue_id,
                     pci_barset);
             status = -ENOMEM;
             goto out;
         }
 
         db_offset = rq_create->u.response.doorbell_offset;
         if ((db_offset != LPFC_ULP0_RQ_DOORBELL) &&
             (db_offset != LPFC_ULP1_RQ_DOORBELL)) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "3270 RQ[%d] doorbell offset not "
                     "supported: x%x\n", hrq->queue_id,
                     db_offset);
             status = -EINVAL;
             goto out;
         }
         hrq->db_regaddr = bar_memmap_p + db_offset;
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "3266 RQ[qid:%d]: barset:x%x, offset:x%x, "
                 "format:x%x\n", hrq->queue_id, pci_barset,
                 db_offset, hrq->db_format);
     } else {
         hrq->db_format = LPFC_DB_RING_FORMAT;
         hrq->db_regaddr = phba->sli4_hba.RQDBregaddr;
     }
     hrq->type = LPFC_HRQ;
     hrq->assoc_qid = cq->queue_id;
     hrq->subtype = subtype;
     hrq->host_index = 0;
     hrq->hba_index = 0;
     hrq->notify_interval = LPFC_RQ_NOTIFY_INTRVL;
 
     /* 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);
     bf_set(lpfc_mbox_hdr_version, &shdr->request,
            phba->sli4_hba.pc_sli4_params.rqv);
     if (phba->sli4_hba.pc_sli4_params.rqv == LPFC_Q_CREATE_VERSION_1) {
         bf_set(lpfc_rq_context_rqe_count_1,
                &rq_create->u.request.context, hrq->entry_count);
         if (subtype == LPFC_NVMET)
             rq_create->u.request.context.buffer_size =
                 LPFC_NVMET_DATA_BUF_SIZE;
         else
             rq_create->u.request.context.buffer_size =
                 LPFC_DATA_BUF_SIZE;
         bf_set(lpfc_rq_context_rqe_size, &rq_create->u.request.context,
                LPFC_RQE_SIZE_8);
         bf_set(lpfc_rq_context_page_size, &rq_create->u.request.context,
                (PAGE_SIZE/SLI4_PAGE_SIZE));
     } else {
         switch (drq->entry_count) {
         default:
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2536 Unsupported RQ count. (%d)\n",
                     drq->entry_count);
             if (drq->entry_count < 512) {
                 status = -EINVAL;
                 goto out;
             }
             fallthrough;    /* otherwise default to smallest count */
         case 512:
             bf_set(lpfc_rq_context_rqe_count,
                    &rq_create->u.request.context,
                    LPFC_RQ_RING_SIZE_512);
             break;
         case 1024:
             bf_set(lpfc_rq_context_rqe_count,
                    &rq_create->u.request.context,
                    LPFC_RQ_RING_SIZE_1024);
             break;
         case 2048:
             bf_set(lpfc_rq_context_rqe_count,
                    &rq_create->u.request.context,
                    LPFC_RQ_RING_SIZE_2048);
             break;
         case 4096:
             bf_set(lpfc_rq_context_rqe_count,
                    &rq_create->u.request.context,
                    LPFC_RQ_RING_SIZE_4096);
             break;
         }
         if (subtype == LPFC_NVMET)
             bf_set(lpfc_rq_context_buf_size,
                    &rq_create->u.request.context,
                    LPFC_NVMET_DATA_BUF_SIZE);
         else
             bf_set(lpfc_rq_context_buf_size,
                    &rq_create->u.request.context,
                    LPFC_DATA_BUF_SIZE);
     }
     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);
     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);
     }
     if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE)
         bf_set(lpfc_mbx_rq_create_dua, &rq_create->u.request, 1);
     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->assoc_qid = cq->queue_id;
     drq->subtype = subtype;
     drq->host_index = 0;
     drq->hba_index = 0;
     drq->notify_interval = LPFC_RQ_NOTIFY_INTRVL;
 
     /* 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:
     mempool_free(mbox, phba->mbox_mem_pool);
     return status;
 }
 
 /**
  * lpfc_mrq_create - Create MRQ Receive Queues on the HBA
  * @phba: HBA structure that indicates port to create a queue on.
  * @hrqp: The queue structure array to use to create the header receive queues.
  * @drqp: The queue structure array to use to create the data receive queues.
  * @cqp: The completion queue array to bind these receive queues to.
  * @subtype: Functional purpose of the queue (MBOX, IO, ELS, NVMET, etc).
  *
  * 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.
  **/
 int
 lpfc_mrq_create(struct lpfc_hba *phba, struct lpfc_queue **hrqp,
         struct lpfc_queue **drqp, struct lpfc_queue **cqp,
         uint32_t subtype)
 {
     struct lpfc_queue *hrq, *drq, *cq;
     struct lpfc_mbx_rq_create_v2 *rq_create;
     struct lpfc_dmabuf *dmabuf;
     LPFC_MBOXQ_t *mbox;
     int rc, length, alloclen, status = 0;
     int cnt, idx, numrq, page_idx = 0;
     uint32_t shdr_status, shdr_add_status;
     union lpfc_sli4_cfg_shdr *shdr;
     uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz;
 
     numrq = phba->cfg_nvmet_mrq;
     /* sanity check on array memory */
     if (!hrqp || !drqp || !cqp || !numrq)
         return -ENODEV;
     if (!phba->sli4_hba.pc_sli4_params.supported)
         hw_page_size = SLI4_PAGE_SIZE;
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox)
         return -ENOMEM;
 
     length = sizeof(struct lpfc_mbx_rq_create_v2);
     length += ((2 * numrq * hrqp[0]->page_count) *
            sizeof(struct dma_address));
 
     alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
                     LPFC_MBOX_OPCODE_FCOE_RQ_CREATE, length,
                     LPFC_SLI4_MBX_NEMBED);
     if (alloclen < length) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3099 Allocated DMA memory size (%d) is "
                 "less than the requested DMA memory size "
                 "(%d)\n", alloclen, length);
         status = -ENOMEM;
         goto out;
     }
 
 
 
     rq_create = mbox->sge_array->addr[0];
     shdr = (union lpfc_sli4_cfg_shdr *)&rq_create->cfg_shdr;
 
     bf_set(lpfc_mbox_hdr_version, &shdr->request, LPFC_Q_CREATE_VERSION_2);
     cnt = 0;
 
     for (idx = 0; idx < numrq; idx++) {
         hrq = hrqp[idx];
         drq = drqp[idx];
         cq  = cqp[idx];
 
         /* sanity check on queue memory */
         if (!hrq || !drq || !cq) {
             status = -ENODEV;
             goto out;
         }
 
         if (hrq->entry_count != drq->entry_count) {
             status = -EINVAL;
             goto out;
         }
 
         if (idx == 0) {
             bf_set(lpfc_mbx_rq_create_num_pages,
                    &rq_create->u.request,
                    hrq->page_count);
             bf_set(lpfc_mbx_rq_create_rq_cnt,
                    &rq_create->u.request, (numrq * 2));
             bf_set(lpfc_mbx_rq_create_dnb, &rq_create->u.request,
                    1);
             bf_set(lpfc_rq_context_base_cq,
                    &rq_create->u.request.context,
                    cq->queue_id);
             bf_set(lpfc_rq_context_data_size,
                    &rq_create->u.request.context,
                    LPFC_NVMET_DATA_BUF_SIZE);
             bf_set(lpfc_rq_context_hdr_size,
                    &rq_create->u.request.context,
                    LPFC_HDR_BUF_SIZE);
             bf_set(lpfc_rq_context_rqe_count_1,
                    &rq_create->u.request.context,
                    hrq->entry_count);
             bf_set(lpfc_rq_context_rqe_size,
                    &rq_create->u.request.context,
                    LPFC_RQE_SIZE_8);
             bf_set(lpfc_rq_context_page_size,
                    &rq_create->u.request.context,
                    (PAGE_SIZE/SLI4_PAGE_SIZE));
         }
         rc = 0;
         list_for_each_entry(dmabuf, &hrq->page_list, list) {
             memset(dmabuf->virt, 0, hw_page_size);
             cnt = page_idx + dmabuf->buffer_tag;
             rq_create->u.request.page[cnt].addr_lo =
                     putPaddrLow(dmabuf->phys);
             rq_create->u.request.page[cnt].addr_hi =
                     putPaddrHigh(dmabuf->phys);
             rc++;
         }
         page_idx += rc;
 
         rc = 0;
         list_for_each_entry(dmabuf, &drq->page_list, list) {
             memset(dmabuf->virt, 0, hw_page_size);
             cnt = page_idx + dmabuf->buffer_tag;
             rq_create->u.request.page[cnt].addr_lo =
                     putPaddrLow(dmabuf->phys);
             rq_create->u.request.page[cnt].addr_hi =
                     putPaddrHigh(dmabuf->phys);
             rc++;
         }
         page_idx += rc;
 
         hrq->db_format = LPFC_DB_RING_FORMAT;
         hrq->db_regaddr = phba->sli4_hba.RQDBregaddr;
         hrq->type = LPFC_HRQ;
         hrq->assoc_qid = cq->queue_id;
         hrq->subtype = subtype;
         hrq->host_index = 0;
         hrq->hba_index = 0;
         hrq->notify_interval = LPFC_RQ_NOTIFY_INTRVL;
 
         drq->db_format = LPFC_DB_RING_FORMAT;
         drq->db_regaddr = phba->sli4_hba.RQDBregaddr;
         drq->type = LPFC_DRQ;
         drq->assoc_qid = cq->queue_id;
         drq->subtype = subtype;
         drq->host_index = 0;
         drq->hba_index = 0;
         drq->notify_interval = LPFC_RQ_NOTIFY_INTRVL;
 
         list_add_tail(&hrq->list, &cq->child_list);
         list_add_tail(&drq->list, &cq->child_list);
     }
 
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
     /* The IOCTL status is embedded in the mailbox subheader. */
     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_TRACE_EVENT,
                 "3120 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;
     }
     rc = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response);
     if (rc == 0xFFFF) {
         status = -ENXIO;
         goto out;
     }
 
     /* Initialize all RQs with associated queue id */
     for (idx = 0; idx < numrq; idx++) {
         hrq = hrqp[idx];
         hrq->queue_id = rc + (2 * idx);
         drq = drqp[idx];
         drq->queue_id = rc + (2 * idx) + 1;
     }
 
 out:
     lpfc_sli4_mbox_cmd_free(phba, mbox);
     return status;
 }
 
 /**
  * lpfc_eq_destroy - Destroy an event Queue on the HBA
  * @phba: HBA structure that indicates port to destroy a queue on.
  * @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.
  **/
 int
 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;
 
     /* sanity check on queue memory */
     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_TRACE_EVENT,
                 "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);
     mempool_free(mbox, eq->phba->mbox_mem_pool);
     return status;
 }
 
 /**
  * lpfc_cq_destroy - Destroy a Completion Queue on the HBA
  * @phba: HBA structure that indicates port to destroy a queue on.
  * @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.
  **/
 int
 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;
 
     /* sanity check on queue memory */
     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_TRACE_EVENT,
                 "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);
     mempool_free(mbox, cq->phba->mbox_mem_pool);
     return status;
 }
 
 /**
  * lpfc_mq_destroy - Destroy a Mailbox Queue on the HBA
  * @phba: HBA structure that indicates port to destroy a queue on.
  * @mq: 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.
  **/
 int
 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;
 
     /* sanity check on queue memory */
     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_TRACE_EVENT,
                 "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);
     mempool_free(mbox, mq->phba->mbox_mem_pool);
     return status;
 }
 
 /**
  * lpfc_wq_destroy - Destroy a Work Queue on the HBA
  * @phba: HBA structure that indicates port to destroy a queue on.
  * @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.
  **/
 int
 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;
 
     /* sanity check on queue memory */
     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_TRACE_EVENT,
                 "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);
     kfree(wq->pring);
     wq->pring = NULL;
     mempool_free(mbox, wq->phba->mbox_mem_pool);
     return status;
 }
 
 /**
  * lpfc_rq_destroy - Destroy a Receive Queue on the HBA
  * @phba: HBA structure that indicates port to destroy a queue on.
  * @hrq: The queue structure associated with the queue to destroy.
  * @drq: 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.
  **/
 int
 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;
 
     /* sanity check on queue memory */
     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 lpfc_sli4_cfg_mhdr));
     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_TRACE_EVENT,
                 "2509 RQ_DESTROY mailbox failed with "
                 "status x%x add_status x%x, mbx status x%x\n",
                 shdr_status, shdr_add_status, rc);
         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_TRACE_EVENT,
                 "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);
     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;
     uint32_t mbox_tmo;
     union lpfc_sli4_cfg_shdr *shdr;
 
     if (xritag == NO_XRI) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "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 lpfc_sli4_cfg_mhdr), 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 {
         mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
         rc = lpfc_sli_issue_mbox_wait(phba, mbox, 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 (!phba->sli4_hba.intr_enable)
         mempool_free(mbox, phba->mbox_mem_pool);
     else 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_TRACE_EVENT,
                 "2511 POST_SGL mailbox failed with "
                 "status x%x add_status x%x, mbx status x%x\n",
                 shdr_status, shdr_add_status, rc);
     }
     return 0;
 }
 
 /**
  * lpfc_sli4_alloc_xri - 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 SLI4_PAGE_SIZE memory region to the port to hold up to
  * SLI4_PAGE_SIZE modulo 64 rpi context headers.
  *
  * Returns
  *  A nonzero rpi defined as rpi_base <= rpi < max_rpi if successful
  *  LPFC_RPI_ALLOC_ERROR if no rpis are available.
  **/
 static uint16_t
 lpfc_sli4_alloc_xri(struct lpfc_hba *phba)
 {
     unsigned long xri;
 
     /*
      * Fetch the next logical xri.  Because this index is logical,
      * the driver starts at 0 each time.
      */
     spin_lock_irq(&phba->hbalock);
     xri = find_first_zero_bit(phba->sli4_hba.xri_bmask,
                  phba->sli4_hba.max_cfg_param.max_xri);
     if (xri >= phba->sli4_hba.max_cfg_param.max_xri) {
         spin_unlock_irq(&phba->hbalock);
         return NO_XRI;
     } else {
         set_bit(xri, phba->sli4_hba.xri_bmask);
         phba->sli4_hba.max_cfg_param.xri_used++;
     }
     spin_unlock_irq(&phba->hbalock);
     return xri;
 }
 
 /**
  * __lpfc_sli4_free_xri - Release an xri for reuse.
  * @phba: pointer to lpfc hba data structure.
  * @xri: xri to release.
  *
  * This routine is invoked to release an xri to the pool of
  * available rpis maintained by the driver.
  **/
 static void
 __lpfc_sli4_free_xri(struct lpfc_hba *phba, int xri)
 {
     if (test_and_clear_bit(xri, phba->sli4_hba.xri_bmask)) {
         phba->sli4_hba.max_cfg_param.xri_used--;
     }
 }
 
 /**
  * lpfc_sli4_free_xri - Release an xri for reuse.
  * @phba: pointer to lpfc hba data structure.
  * @xri: xri to release.
  *
  * This routine is invoked to release an xri to the pool of
  * available rpis maintained by the driver.
  **/
 void
 lpfc_sli4_free_xri(struct lpfc_hba *phba, int xri)
 {
     spin_lock_irq(&phba->hbalock);
     __lpfc_sli4_free_xri(phba, xri);
     spin_unlock_irq(&phba->hbalock);
 }
 
 /**
  * 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 xri_index;
 
     xri_index = lpfc_sli4_alloc_xri(phba);
     if (xri_index == NO_XRI)
         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
                 "2004 Failed to allocate XRI.last XRITAG is %d"
                 " Max XRI is %d, Used XRI is %d\n",
                 xri_index,
                 phba->sli4_hba.max_cfg_param.max_xri,
                 phba->sli4_hba.max_cfg_param.xri_used);
     return xri_index;
 }
 
 /**
  * lpfc_sli4_post_sgl_list - post a block of ELS sgls to the port.
  * @phba: pointer to lpfc hba data structure.
  * @post_sgl_list: pointer to els sgl entry list.
  * @post_cnt: number of els sgl entries on the list.
  *
  * 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.
  **/
 static int
 lpfc_sli4_post_sgl_list(struct lpfc_hba *phba,
                 struct list_head *post_sgl_list,
                 int post_cnt)
 {
     struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
     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;
     union lpfc_sli4_cfg_shdr *shdr;
 
     reqlen = post_cnt * sizeof(struct sgl_page_pairs) +
          sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t);
     if (reqlen > SLI4_PAGE_SIZE) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "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)
         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_TRACE_EVENT,
                 "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;
     }
     /* Set up the SGL pages in the non-embedded DMA pages */
     viraddr = mbox->sge_array->addr[0];
     sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr;
     sgl_pg_pairs = &sgl->sgl_pg_pairs;
 
     pg_pairs = 0;
     list_for_each_entry_safe(sglq_entry, sglq_next, post_sgl_list, list) {
         /* 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++;
         pg_pairs++;
     }
 
     /* Complete initialization and perform endian conversion. */
     bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start);
     bf_set(lpfc_post_sgl_pages_xricnt, sgl, post_cnt);
     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, mbox);
         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 (!phba->sli4_hba.intr_enable)
         lpfc_sli4_mbox_cmd_free(phba, mbox);
     else 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_TRACE_EVENT,
                 "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_io_sgl_block - post a block of nvme sgl list to firmware
  * @phba: pointer to lpfc hba data structure.
  * @nblist: pointer to nvme 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 @nblist to the HBA using non-embedded mailbox command.
  * No Lock is held.
  *
  **/
 static int
 lpfc_sli4_post_io_sgl_block(struct lpfc_hba *phba, struct list_head *nblist,
                 int count)
 {
     struct lpfc_io_buf *lpfc_ncmd;
     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 = count * sizeof(struct sgl_page_pairs) +
          sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t);
     if (reqlen > SLI4_PAGE_SIZE) {
         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                 "6118 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_TRACE_EVENT,
                 "6119 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_TRACE_EVENT,
                 "6120 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 */
     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(lpfc_ncmd, nblist, list) {
         /* Set up the sge entry */
         sgl_pg_pairs->sgl_pg0_addr_lo =
             cpu_to_le32(putPaddrLow(lpfc_ncmd->dma_phys_sgl));
         sgl_pg_pairs->sgl_pg0_addr_hi =
             cpu_to_le32(putPaddrHigh(lpfc_ncmd->dma_phys_sgl));
         if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE)
             pdma_phys_bpl1 = lpfc_ncmd->dma_phys_sgl +
                         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 = lpfc_ncmd->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, mbox);
         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 (!phba->sli4_hba.intr_enable)
         lpfc_sli4_mbox_cmd_free(phba, mbox);
     else 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_TRACE_EVENT,
                 "6125 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_io_sgl_list - Post blocks of nvme buffer sgls from a list
  * @phba: pointer to lpfc hba data structure.
  * @post_nblist: pointer to the nvme buffer list.
  * @sb_count: number of nvme buffers.
  *
  * This routine walks a list of nvme buffers that was passed in. It attempts
  * to construct blocks of nvme buffer sgls which contains contiguous xris and
  * uses the non-embedded SGL block post mailbox commands to post to the port.
  * For single NVME buffer sgl with non-contiguous xri, if any, it shall use
  * embedded SGL post mailbox command for posting. The @post_nblist passed in
  * must be local list, thus no lock is needed when manipulate the list.
  *
  * Returns: 0 = failure, non-zero number of successfully posted buffers.
  **/
 int
 lpfc_sli4_post_io_sgl_list(struct lpfc_hba *phba,
                struct list_head *post_nblist, int sb_count)
 {
     struct lpfc_io_buf *lpfc_ncmd, *lpfc_ncmd_next;
     int status, sgl_size;
     int post_cnt = 0, block_cnt = 0, num_posting = 0, num_posted = 0;
     dma_addr_t pdma_phys_sgl1;
     int last_xritag = NO_XRI;
     int cur_xritag;
     LIST_HEAD(prep_nblist);
     LIST_HEAD(blck_nblist);
     LIST_HEAD(nvme_nblist);
 
     /* sanity check */
     if (sb_count <= 0)
         return -EINVAL;
 
     sgl_size = phba->cfg_sg_dma_buf_size;
     list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next, post_nblist, list) {
         list_del_init(&lpfc_ncmd->list);
         block_cnt++;
         if ((last_xritag != NO_XRI) &&
             (lpfc_ncmd->cur_iocbq.sli4_xritag != last_xritag + 1)) {
             /* a hole in xri block, form a sgl posting block */
             list_splice_init(&prep_nblist, &blck_nblist);
             post_cnt = block_cnt - 1;
             /* prepare list for next posting block */
             list_add_tail(&lpfc_ncmd->list, &prep_nblist);
             block_cnt = 1;
         } else {
             /* prepare list for next posting block */
             list_add_tail(&lpfc_ncmd->list, &prep_nblist);
             /* enough sgls for non-embed sgl mbox command */
             if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) {
                 list_splice_init(&prep_nblist, &blck_nblist);
                 post_cnt = block_cnt;
                 block_cnt = 0;
             }
         }
         num_posting++;
         last_xritag = lpfc_ncmd->cur_iocbq.sli4_xritag;
 
         /* end of repost sgl list condition for NVME buffers */
         if (num_posting == sb_count) {
             if (post_cnt == 0) {
                 /* last sgl posting block */
                 list_splice_init(&prep_nblist, &blck_nblist);
                 post_cnt = block_cnt;
             } else if (block_cnt == 1) {
                 /* last single sgl with non-contiguous xri */
                 if (sgl_size > SGL_PAGE_SIZE)
                     pdma_phys_sgl1 =
                         lpfc_ncmd->dma_phys_sgl +
                         SGL_PAGE_SIZE;
                 else
                     pdma_phys_sgl1 = 0;
                 cur_xritag = lpfc_ncmd->cur_iocbq.sli4_xritag;
                 status = lpfc_sli4_post_sgl(
                         phba, lpfc_ncmd->dma_phys_sgl,
                         pdma_phys_sgl1, cur_xritag);
                 if (status) {
                     /* Post error.  Buffer unavailable. */
                     lpfc_ncmd->flags |=
                         LPFC_SBUF_NOT_POSTED;
                 } else {
                     /* Post success. Bffer available. */
                     lpfc_ncmd->flags &=
                         ~LPFC_SBUF_NOT_POSTED;
                     lpfc_ncmd->status = IOSTAT_SUCCESS;
                     num_posted++;
                 }
                 /* success, put on NVME buffer sgl list */
                 list_add_tail(&lpfc_ncmd->list, &nvme_nblist);
             }
         }
 
         /* continue until a nembed page worth of sgls */
         if (post_cnt == 0)
             continue;
 
         /* post block of NVME buffer list sgls */
         status = lpfc_sli4_post_io_sgl_block(phba, &blck_nblist,
                              post_cnt);
 
         /* don't reset xirtag due to hole in xri block */
         if (block_cnt == 0)
             last_xritag = NO_XRI;
 
         /* reset NVME buffer post count for next round of posting */
         post_cnt = 0;
 
         /* put posted NVME buffer-sgl posted on NVME buffer sgl list */
         while (!list_empty(&blck_nblist)) {
             list_remove_head(&blck_nblist, lpfc_ncmd,
                      struct lpfc_io_buf, list);
             if (status) {
                 /* Post error.  Mark buffer unavailable. */
                 lpfc_ncmd->flags |= LPFC_SBUF_NOT_POSTED;
             } else {
                 /* Post success, Mark buffer available. */
                 lpfc_ncmd->flags &= ~LPFC_SBUF_NOT_POSTED;
                 lpfc_ncmd->status = IOSTAT_SUCCESS;
                 num_posted++;
             }
             list_add_tail(&lpfc_ncmd->list, &nvme_nblist);
         }
     }
     /* Push NVME buffers with sgl posted to the available list */
     lpfc_io_buf_replenish(phba, &nvme_nblist);
 
     return num_posted;
 }
 
 /**
  * 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)
 {
     /*  make rctl_names static to save stack space */
     struct fc_vft_header *fc_vft_hdr;
     uint32_t *header = (uint32_t *) fc_hdr;
 
 #define FC_RCTL_MDS_DIAGS   0xF4
 
     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_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_MDS_DIAGS: /* MDS Diagnostics */
     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);
     case FC_RCTL_BA_NOP:    /* basic link service NOP */
     default:
         goto drop;
     }
 
     switch (fc_hdr->fh_type) {
     case FC_TYPE_BLS:
     case FC_TYPE_ELS:
     case FC_TYPE_FCP:
     case FC_TYPE_CT:
     case FC_TYPE_NVME:
         break;
     case FC_TYPE_IP:
     case FC_TYPE_ILS:
     default:
         goto drop;
     }
 
     lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
             "2538 Received frame rctl:x%x, type:x%x, "
             "frame Data:%08x %08x %08x %08x %08x %08x %08x\n",
             fc_hdr->fh_r_ctl, fc_hdr->fh_type,
             be32_to_cpu(header[0]), be32_to_cpu(header[1]),
             be32_to_cpu(header[2]), be32_to_cpu(header[3]),
             be32_to_cpu(header[4]), be32_to_cpu(header[5]),
             be32_to_cpu(header[6]));
     return 0;
 drop:
     lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
             "2539 Dropped frame rctl:x%x type:x%x\n",
             fc_hdr->fh_r_ctl, 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
  * @did: Destination ID to match against
  *
  * 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, uint32_t did)
 {
     struct lpfc_vport **vports;
     struct lpfc_vport *vport = NULL;
     int i;
 
     if (did == Fabric_DID)
         return phba->pport;
     if ((phba->pport->fc_flag & FC_PT2PT) &&
         !(phba->link_state == LPFC_HBA_READY))
         return phba->pport;
 
     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_update_rcv_time_stamp - Update vport's rcv seq time stamp
  * @vport: The vport to work on.
  *
  * This function updates the receive sequence time stamp for this vport. The
  * receive sequence time stamp indicates the time that the last frame of the
  * the sequence that has been idle for the longest amount of time was received.
  * the driver uses this time stamp to indicate if any received sequences have
  * timed out.
  **/
 static void
 lpfc_update_rcv_time_stamp(struct lpfc_vport *vport)
 {
     struct lpfc_dmabuf *h_buf;
     struct hbq_dmabuf *dmabuf = NULL;
 
     /* get the oldest sequence on the rcv list */
     h_buf = list_get_first(&vport->rcv_buffer_list,
                    struct lpfc_dmabuf, list);
     if (!h_buf)
         return;
     dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
     vport->rcv_buffer_time_stamp = dmabuf->time_stamp;
 }
 
 /**
  * lpfc_cleanup_rcv_buffers - Cleans up all outstanding receive sequences.
  * @vport: The vport that the received sequences were sent to.
  *
  * This function cleans up all outstanding received sequences. This is called
  * by the driver when a link event or user action invalidates all the received
  * sequences.
  **/
 void
 lpfc_cleanup_rcv_buffers(struct lpfc_vport *vport)
 {
     struct lpfc_dmabuf *h_buf, *hnext;
     struct lpfc_dmabuf *d_buf, *dnext;
     struct hbq_dmabuf *dmabuf = NULL;
 
     /* start with the oldest sequence on the rcv list */
     list_for_each_entry_safe(h_buf, hnext, &vport->rcv_buffer_list, list) {
         dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
         list_del_init(&dmabuf->hbuf.list);
         list_for_each_entry_safe(d_buf, dnext,
                      &dmabuf->dbuf.list, list) {
             list_del_init(&d_buf->list);
             lpfc_in_buf_free(vport->phba, d_buf);
         }
         lpfc_in_buf_free(vport->phba, &dmabuf->dbuf);
     }
 }
 
 /**
  * lpfc_rcv_seq_check_edtov - Cleans up timed out receive sequences.
  * @vport: The vport that the received sequences were sent to.
  *
  * This function determines whether any received sequences have timed out by
  * first checking the vport's rcv_buffer_time_stamp. If this time_stamp
  * indicates that there is at least one timed out sequence this routine will
  * go through the received sequences one at a time from most inactive to most
  * active to determine which ones need to be cleaned up. Once it has determined
  * that a sequence needs to be cleaned up it will simply free up the resources
  * without sending an abort.
  **/
 void
 lpfc_rcv_seq_check_edtov(struct lpfc_vport *vport)
 {
     struct lpfc_dmabuf *h_buf, *hnext;
     struct lpfc_dmabuf *d_buf, *dnext;
     struct hbq_dmabuf *dmabuf = NULL;
     unsigned long timeout;
     int abort_count = 0;
 
     timeout = (msecs_to_jiffies(vport->phba->fc_edtov) +
            vport->rcv_buffer_time_stamp);
     if (list_empty(&vport->rcv_buffer_list) ||
         time_before(jiffies, timeout))
         return;
     /* start with the oldest sequence on the rcv list */
     list_for_each_entry_safe(h_buf, hnext, &vport->rcv_buffer_list, list) {
         dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
         timeout = (msecs_to_jiffies(vport->phba->fc_edtov) +
                dmabuf->time_stamp);
         if (time_before(jiffies, timeout))
             break;
         abort_count++;
         list_del_init(&dmabuf->hbuf.list);
         list_for_each_entry_safe(d_buf, dnext,
                      &dmabuf->dbuf.list, list) {
             list_del_init(&d_buf->list);
             lpfc_in_buf_free(vport->phba, d_buf);
         }
         lpfc_in_buf_free(vport->phba, &dmabuf->dbuf);
     }
     if (abort_count)
         lpfc_update_rcv_time_stamp(vport);
 }
 
 /**
  * lpfc_fc_frame_add - Adds a frame to the vport's list of received sequences
  * @vport: pointer to a vitural port
  * @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;
     uint8_t found = 0;
 
     INIT_LIST_HEAD(&dmabuf->dbuf.list);
     dmabuf->time_stamp = jiffies;
     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);
         lpfc_update_rcv_time_stamp(vport);
         return dmabuf;
     }
     temp_hdr = seq_dmabuf->hbuf.virt;
     if (be16_to_cpu(new_hdr->fh_seq_cnt) <
         be16_to_cpu(temp_hdr->fh_seq_cnt)) {
         list_del_init(&seq_dmabuf->hbuf.list);
         list_add_tail(&dmabuf->hbuf.list, &vport->rcv_buffer_list);
         list_add_tail(&dmabuf->dbuf.list, &seq_dmabuf->dbuf.list);
         lpfc_update_rcv_time_stamp(vport);
         return dmabuf;
     }
     /* move this sequence to the tail to indicate a young sequence */
     list_move_tail(&seq_dmabuf->hbuf.list, &vport->rcv_buffer_list);
     seq_dmabuf->time_stamp = jiffies;
     lpfc_update_rcv_time_stamp(vport);
     if (list_empty(&seq_dmabuf->dbuf.list)) {
         list_add_tail(&dmabuf->dbuf.list, &seq_dmabuf->dbuf.list);
         return seq_dmabuf;
     }
     /* find the correct place in the sequence to insert this frame */
     d_buf = list_entry(seq_dmabuf->dbuf.list.prev, typeof(*d_buf), list);
     while (!found) {
         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 (be16_to_cpu(new_hdr->fh_seq_cnt) >
             be16_to_cpu(temp_hdr->fh_seq_cnt)) {
             list_add(&dmabuf->dbuf.list, &temp_dmabuf->dbuf.list);
             found = 1;
             break;
         }
 
         if (&d_buf->list == &seq_dmabuf->dbuf.list)
             break;
         d_buf = list_entry(d_buf->list.prev, typeof(*d_buf), list);
     }
 
     if (found)
         return seq_dmabuf;
     return NULL;
 }
 
 /**
  * lpfc_sli4_abort_partial_seq - Abort partially assembled unsol sequence
  * @vport: pointer to a vitural port
  * @dmabuf: pointer to a dmabuf that describes the FC sequence
  *
  * This function tries to abort from the partially assembed sequence, described
  * by the information from basic abbort @dmabuf. It checks to see whether such
  * partially assembled sequence held by the driver. If so, it shall free up all
  * the frames from the partially assembled sequence.
  *
  * Return
  * true  -- if there is matching partially assembled sequence present and all
  *          the frames freed with the sequence;
  * false -- if there is no matching partially assembled sequence present so
  *          nothing got aborted in the lower layer driver
  **/
 static bool
 lpfc_sli4_abort_partial_seq(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, *n_buf, *h_buf;
     struct hbq_dmabuf *seq_dmabuf = NULL;
 
     /* Use the hdr_buf to find the sequence that matches this frame */
     INIT_LIST_HEAD(&dmabuf->dbuf.list);
     INIT_LIST_HEAD(&dmabuf->hbuf.list);
     new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
     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;
     }
 
     /* Free up all the frames from the partially assembled sequence */
     if (seq_dmabuf) {
         list_for_each_entry_safe(d_buf, n_buf,
                      &seq_dmabuf->dbuf.list, list) {
             list_del_init(&d_buf->list);
             lpfc_in_buf_free(vport->phba, d_buf);
         }
         return true;
     }
     return false;
 }
 
 /**
  * lpfc_sli4_abort_ulp_seq - Abort assembled unsol sequence from ulp
  * @vport: pointer to a vitural port
  * @dmabuf: pointer to a dmabuf that describes the FC sequence
  *
  * This function tries to abort from the assembed sequence from upper level
  * protocol, described by the information from basic abbort @dmabuf. It
  * checks to see whether such pending context exists at upper level protocol.
  * If so, it shall clean up the pending context.
  *
  * Return
  * true  -- if there is matching pending context of the sequence cleaned
  *          at ulp;
  * false -- if there is no matching pending context of the sequence present
  *          at ulp.
  **/
 static bool
 lpfc_sli4_abort_ulp_seq(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf)
 {
     struct lpfc_hba *phba = vport->phba;
     int handled;
 
     /* Accepting abort at ulp with SLI4 only */
     if (phba->sli_rev < LPFC_SLI_REV4)
         return false;
 
     /* Register all caring upper level protocols to attend abort */
     handled = lpfc_ct_handle_unsol_abort(phba, dmabuf);
     if (handled)
         return true;
 
     return false;
 }
 
 /**
  * lpfc_sli4_seq_abort_rsp_cmpl - BLS ABORT RSP seq abort iocb complete handler
  * @phba: Pointer to HBA context object.
  * @cmd_iocbq: pointer to the command iocbq structure.
  * @rsp_iocbq: pointer to the response iocbq structure.
  *
  * This function handles the sequence abort response iocb command complete
  * event. It properly releases the memory allocated to the sequence abort
  * accept iocb.
  **/
 static void
 lpfc_sli4_seq_abort_rsp_cmpl(struct lpfc_hba *phba,
                  struct lpfc_iocbq *cmd_iocbq,
                  struct lpfc_iocbq *rsp_iocbq)
 {
     if (cmd_iocbq) {
         lpfc_nlp_put(cmd_iocbq->ndlp);
         lpfc_sli_release_iocbq(phba, cmd_iocbq);
     }
 
     /* Failure means BLS ABORT RSP did not get delivered to remote node*/
     if (rsp_iocbq && rsp_iocbq->iocb.ulpStatus)
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "3154 BLS ABORT RSP failed, data:  x%x/x%x\n",
             get_job_ulpstatus(phba, rsp_iocbq),
             get_job_word4(phba, rsp_iocbq));
 }
 
 /**
  * lpfc_sli4_xri_inrange - check xri is in range of xris owned by driver.
  * @phba: Pointer to HBA context object.
  * @xri: xri id in transaction.
  *
  * This function validates the xri maps to the known range of XRIs allocated an
  * used by the driver.
  **/
 uint16_t
 lpfc_sli4_xri_inrange(struct lpfc_hba *phba,
               uint16_t xri)
 {
     uint16_t i;
 
     for (i = 0; i < phba->sli4_hba.max_cfg_param.max_xri; i++) {
         if (xri == phba->sli4_hba.xri_ids[i])
             return i;
     }
     return NO_XRI;
 }
 
 /**
  * lpfc_sli4_seq_abort_rsp - bls rsp to sequence abort
  * @vport: pointer to a virtual port.
  * @fc_hdr: pointer to a FC frame header.
  * @aborted: was the partially assembled receive sequence successfully aborted
  *
  * This function sends a basic response to a previous unsol sequence abort
  * event after aborting the sequence handling.
  **/
 void
 lpfc_sli4_seq_abort_rsp(struct lpfc_vport *vport,
             struct fc_frame_header *fc_hdr, bool aborted)
 {
     struct lpfc_hba *phba = vport->phba;
     struct lpfc_iocbq *ctiocb = NULL;
     struct lpfc_nodelist *ndlp;
     uint16_t oxid, rxid, xri, lxri;
     uint32_t sid, fctl;
     union lpfc_wqe128 *icmd;
     int rc;
 
     if (!lpfc_is_link_up(phba))
         return;
 
     sid = sli4_sid_from_fc_hdr(fc_hdr);
     oxid = be16_to_cpu(fc_hdr->fh_ox_id);
     rxid = be16_to_cpu(fc_hdr->fh_rx_id);
 
     ndlp = lpfc_findnode_did(vport, sid);
     if (!ndlp) {
         ndlp = lpfc_nlp_init(vport, sid);
         if (!ndlp) {
             lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
                      "1268 Failed to allocate ndlp for "
                      "oxid:x%x SID:x%x\n", oxid, sid);
             return;
         }
         /* Put ndlp onto pport node list */
         lpfc_enqueue_node(vport, ndlp);
     }
 
     /* Allocate buffer for rsp iocb */
     ctiocb = lpfc_sli_get_iocbq(phba);
     if (!ctiocb)
         return;
 
     icmd = &ctiocb->wqe;
 
     /* Extract the F_CTL field from FC_HDR */
     fctl = sli4_fctl_from_fc_hdr(fc_hdr);
 
     ctiocb->ndlp = lpfc_nlp_get(ndlp);
     if (!ctiocb->ndlp) {
         lpfc_sli_release_iocbq(phba, ctiocb);
         return;
     }
 
     ctiocb->vport = phba->pport;
     ctiocb->cmd_cmpl = lpfc_sli4_seq_abort_rsp_cmpl;
     ctiocb->sli4_lxritag = NO_XRI;
     ctiocb->sli4_xritag = NO_XRI;
     ctiocb->abort_rctl = FC_RCTL_BA_ACC;
 
     if (fctl & FC_FC_EX_CTX)
         /* Exchange responder sent the abort so we
          * own the oxid.
          */
         xri = oxid;
     else
         xri = rxid;
     lxri = lpfc_sli4_xri_inrange(phba, xri);
     if (lxri != NO_XRI)
         lpfc_set_rrq_active(phba, ndlp, lxri,
             (xri == oxid) ? rxid : oxid, 0);
     /* For BA_ABTS from exchange responder, if the logical xri with
      * the oxid maps to the FCP XRI range, the port no longer has
      * that exchange context, send a BLS_RJT. Override the IOCB for
      * a BA_RJT.
      */
     if ((fctl & FC_FC_EX_CTX) &&
         (lxri > lpfc_sli4_get_iocb_cnt(phba))) {
         ctiocb->abort_rctl = FC_RCTL_BA_RJT;
         bf_set(xmit_bls_rsp64_rjt_vspec, &icmd->xmit_bls_rsp, 0);
         bf_set(xmit_bls_rsp64_rjt_expc, &icmd->xmit_bls_rsp,
                FC_BA_RJT_INV_XID);
         bf_set(xmit_bls_rsp64_rjt_rsnc, &icmd->xmit_bls_rsp,
                FC_BA_RJT_UNABLE);
     }
 
     /* If BA_ABTS failed to abort a partially assembled receive sequence,
      * the driver no longer has that exchange, send a BLS_RJT. Override
      * the IOCB for a BA_RJT.
      */
     if (aborted == false) {
         ctiocb->abort_rctl = FC_RCTL_BA_RJT;
         bf_set(xmit_bls_rsp64_rjt_vspec, &icmd->xmit_bls_rsp, 0);
         bf_set(xmit_bls_rsp64_rjt_expc, &icmd->xmit_bls_rsp,
                FC_BA_RJT_INV_XID);
         bf_set(xmit_bls_rsp64_rjt_rsnc, &icmd->xmit_bls_rsp,
                FC_BA_RJT_UNABLE);
     }
 
     if (fctl & FC_FC_EX_CTX) {
         /* ABTS sent by responder to CT exchange, construction
          * of BA_ACC will use OX_ID from ABTS for the XRI_TAG
          * field and RX_ID from ABTS for RX_ID field.
          */
         ctiocb->abort_bls = LPFC_ABTS_UNSOL_RSP;
         bf_set(xmit_bls_rsp64_rxid, &icmd->xmit_bls_rsp, rxid);
     } else {
         /* ABTS sent by initiator to CT exchange, construction
          * of BA_ACC will need to allocate a new XRI as for the
          * XRI_TAG field.
          */
         ctiocb->abort_bls = LPFC_ABTS_UNSOL_INT;
     }
 
     /* OX_ID is invariable to who sent ABTS to CT exchange */
     bf_set(xmit_bls_rsp64_oxid, &icmd->xmit_bls_rsp, oxid);
     bf_set(xmit_bls_rsp64_oxid, &icmd->xmit_bls_rsp, rxid);
 
     /* Use CT=VPI */
     bf_set(wqe_els_did, &icmd->xmit_bls_rsp.wqe_dest,
            ndlp->nlp_DID);
     bf_set(xmit_bls_rsp64_temprpi, &icmd->xmit_bls_rsp,
            phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
     bf_set(wqe_cmnd, &icmd->generic.wqe_com, CMD_XMIT_BLS_RSP64_CX);
 
     /* Xmit CT abts response on exchange <xid> */
     lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
              "1200 Send BLS cmd x%x on oxid x%x Data: x%x\n",
              ctiocb->abort_rctl, oxid, phba->link_state);
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0);
     if (rc == IOCB_ERROR) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                  "2925 Failed to issue CT ABTS RSP x%x on "
                  "xri x%x, Data x%x\n",
                  ctiocb->abort_rctl, oxid,
                  phba->link_state);
         lpfc_nlp_put(ndlp);
         ctiocb->ndlp = NULL;
         lpfc_sli_release_iocbq(phba, ctiocb);
     }
 }
 
 /**
  * lpfc_sli4_handle_unsol_abort - Handle sli-4 unsolicited abort event
  * @vport: Pointer to the vport on which this sequence was received
  * @dmabuf: pointer to a dmabuf that describes the FC sequence
  *
  * This function handles an SLI-4 unsolicited abort event. If the unsolicited
  * receive sequence is only partially assembed by the driver, it shall abort
  * the partially assembled frames for the sequence. Otherwise, if the
  * unsolicited receive sequence has been completely assembled and passed to
  * the Upper Layer Protocol (ULP), it then mark the per oxid status for the
  * unsolicited sequence has been aborted. After that, it will issue a basic
  * accept to accept the abort.
  **/
 static void
 lpfc_sli4_handle_unsol_abort(struct lpfc_vport *vport,
                  struct hbq_dmabuf *dmabuf)
 {
     struct lpfc_hba *phba = vport->phba;
     struct fc_frame_header fc_hdr;
     uint32_t fctl;
     bool aborted;
 
     /* Make a copy of fc_hdr before the dmabuf being released */
     memcpy(&fc_hdr, dmabuf->hbuf.virt, sizeof(struct fc_frame_header));
     fctl = sli4_fctl_from_fc_hdr(&fc_hdr);
 
     if (fctl & FC_FC_EX_CTX) {
         /* ABTS by responder to exchange, no cleanup needed */
         aborted = true;
     } else {
         /* ABTS by initiator to exchange, need to do cleanup */
         aborted = lpfc_sli4_abort_partial_seq(vport, dmabuf);
         if (aborted == false)
             aborted = lpfc_sli4_abort_ulp_seq(vport, dmabuf);
     }
     lpfc_in_buf_free(phba, &dmabuf->dbuf);
 
     if (phba->nvmet_support) {
         lpfc_nvmet_rcv_unsol_abort(vport, &fc_hdr);
         return;
     }
 
     /* Respond with BA_ACC or BA_RJT accordingly */
     lpfc_sli4_seq_abort_rsp(vport, &fc_hdr, aborted);
 }
 
 /**
  * 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 != be16_to_cpu(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
  * @seq_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 hbq_dmabuf *hbq_buf;
     struct lpfc_dmabuf *d_buf, *n_buf;
     struct lpfc_iocbq *first_iocbq, *iocbq;
     struct fc_frame_header *fc_hdr;
     uint32_t sid;
     uint32_t len, tot_len;
 
     fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
     /* remove from receive buffer list */
     list_del_init(&seq_dmabuf->hbuf.list);
     lpfc_update_rcv_time_stamp(vport);
     /* get the Remote Port's SID */
     sid = sli4_sid_from_fc_hdr(fc_hdr);
     tot_len = 0;
     /* Get an iocbq struct to fill in. */
     first_iocbq = lpfc_sli_get_iocbq(vport->phba);
     if (first_iocbq) {
         /* Initialize the first IOCB. */
         first_iocbq->wcqe_cmpl.total_data_placed = 0;
         bf_set(lpfc_wcqe_c_status, &first_iocbq->wcqe_cmpl,
                IOSTAT_SUCCESS);
         first_iocbq->vport = vport;
 
         /* Check FC Header to see what TYPE of frame we are rcv'ing */
         if (sli4_type_from_fc_hdr(fc_hdr) == FC_TYPE_ELS) {
             bf_set(els_rsp64_sid, &first_iocbq->wqe.xmit_els_rsp,
                    sli4_did_from_fc_hdr(fc_hdr));
         }
 
         bf_set(wqe_ctxt_tag, &first_iocbq->wqe.xmit_els_rsp.wqe_com,
                NO_XRI);
         bf_set(wqe_rcvoxid, &first_iocbq->wqe.xmit_els_rsp.wqe_com,
                be16_to_cpu(fc_hdr->fh_ox_id));
 
         /* put the first buffer into the first iocb */
         tot_len = bf_get(lpfc_rcqe_length,
                  &seq_dmabuf->cq_event.cqe.rcqe_cmpl);
 
         first_iocbq->cmd_dmabuf = &seq_dmabuf->dbuf;
         first_iocbq->bpl_dmabuf = NULL;
         /* Keep track of the BDE count */
         first_iocbq->wcqe_cmpl.word3 = 1;
 
         if (tot_len > LPFC_DATA_BUF_SIZE)
             first_iocbq->wqe.gen_req.bde.tus.f.bdeSize =
                 LPFC_DATA_BUF_SIZE;
         else
             first_iocbq->wqe.gen_req.bde.tus.f.bdeSize = tot_len;
 
         first_iocbq->wcqe_cmpl.total_data_placed = tot_len;
         bf_set(wqe_els_did, &first_iocbq->wqe.xmit_els_rsp.wqe_dest,
                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->bpl_dmabuf) {
             iocbq->bpl_dmabuf = d_buf;
             iocbq->wcqe_cmpl.word3++;
             /* We need to get the size out of the right CQE */
             hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
             len = bf_get(lpfc_rcqe_length,
                        &hbq_buf->cq_event.cqe.rcqe_cmpl);
             iocbq->unsol_rcv_len = len;
             iocbq->wcqe_cmpl.total_data_placed += len;
             tot_len += len;
         } else {
             iocbq = lpfc_sli_get_iocbq(vport->phba);
             if (!iocbq) {
                 if (first_iocbq) {
                     bf_set(lpfc_wcqe_c_status,
                            &first_iocbq->wcqe_cmpl,
                            IOSTAT_SUCCESS);
                     first_iocbq->wcqe_cmpl.parameter =
                         IOERR_NO_RESOURCES;
                 }
                 lpfc_in_buf_free(vport->phba, d_buf);
                 continue;
             }
             /* We need to get the size out of the right CQE */
             hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
             len = bf_get(lpfc_rcqe_length,
                        &hbq_buf->cq_event.cqe.rcqe_cmpl);
             iocbq->cmd_dmabuf = d_buf;
             iocbq->bpl_dmabuf = NULL;
             iocbq->wcqe_cmpl.word3 = 1;
 
             if (len > LPFC_DATA_BUF_SIZE)
                 iocbq->wqe.xmit_els_rsp.bde.tus.f.bdeSize =
                     LPFC_DATA_BUF_SIZE;
             else
                 iocbq->wqe.xmit_els_rsp.bde.tus.f.bdeSize =
                     len;
 
             tot_len += len;
             iocbq->wcqe_cmpl.total_data_placed = tot_len;
             bf_set(wqe_els_did, &iocbq->wqe.xmit_els_rsp.wqe_dest,
                    sid);
             list_add_tail(&iocbq->list, &first_iocbq->list);
         }
     }
     /* Free the sequence's header buffer */
     if (!first_iocbq)
         lpfc_in_buf_free(vport->phba, &seq_dmabuf->dbuf);
 
     return first_iocbq;
 }
 
 static void
 lpfc_sli4_send_seq_to_ulp(struct lpfc_vport *vport,
               struct hbq_dmabuf *seq_dmabuf)
 {
     struct fc_frame_header *fc_hdr;
     struct lpfc_iocbq *iocbq, *curr_iocb, *next_iocb;
     struct lpfc_hba *phba = vport->phba;
 
     fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
     iocbq = lpfc_prep_seq(vport, seq_dmabuf);
     if (!iocbq) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2707 Ring %d handler: Failed to allocate "
                 "iocb Rctl x%x Type x%x received\n",
                 LPFC_ELS_RING,
                 fc_hdr->fh_r_ctl, fc_hdr->fh_type);
         return;
     }
     if (!lpfc_complete_unsol_iocb(phba,
                       phba->sli4_hba.els_wq->pring,
                       iocbq, fc_hdr->fh_r_ctl,
                       fc_hdr->fh_type)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "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);
         lpfc_in_buf_free(phba, &seq_dmabuf->dbuf);
     }
 
     /* Free iocb created in lpfc_prep_seq */
     list_for_each_entry_safe(curr_iocb, next_iocb,
                  &iocbq->list, list) {
         list_del_init(&curr_iocb->list);
         lpfc_sli_release_iocbq(phba, curr_iocb);
     }
     lpfc_sli_release_iocbq(phba, iocbq);
 }
 
 static void
 lpfc_sli4_mds_loopback_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                 struct lpfc_iocbq *rspiocb)
 {
     struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
 
     if (pcmd && pcmd->virt)
         dma_pool_free(phba->lpfc_drb_pool, pcmd->virt, pcmd->phys);
     kfree(pcmd);
     lpfc_sli_release_iocbq(phba, cmdiocb);
     lpfc_drain_txq(phba);
 }
 
 static void
 lpfc_sli4_handle_mds_loopback(struct lpfc_vport *vport,
                   struct hbq_dmabuf *dmabuf)
 {
     struct fc_frame_header *fc_hdr;
     struct lpfc_hba *phba = vport->phba;
     struct lpfc_iocbq *iocbq = NULL;
     union  lpfc_wqe128 *pwqe;
     struct lpfc_dmabuf *pcmd = NULL;
     uint32_t frame_len;
     int rc;
     unsigned long iflags;
 
     fc_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
     frame_len = bf_get(lpfc_rcqe_length, &dmabuf->cq_event.cqe.rcqe_cmpl);
 
     /* Send the received frame back */
     iocbq = lpfc_sli_get_iocbq(phba);
     if (!iocbq) {
         /* Queue cq event and wakeup worker thread to process it */
         spin_lock_irqsave(&phba->hbalock, iflags);
         list_add_tail(&dmabuf->cq_event.list,
                   &phba->sli4_hba.sp_queue_event);
         phba->hba_flag |= HBA_SP_QUEUE_EVT;
         spin_unlock_irqrestore(&phba->hbalock, iflags);
         lpfc_worker_wake_up(phba);
         return;
     }
 
     /* Allocate buffer for command payload */
     pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
     if (pcmd)
         pcmd->virt = dma_pool_alloc(phba->lpfc_drb_pool, GFP_KERNEL,
                         &pcmd->phys);
     if (!pcmd || !pcmd->virt)
         goto exit;
 
     INIT_LIST_HEAD(&pcmd->list);
 
     /* copyin the payload */
     memcpy(pcmd->virt, dmabuf->dbuf.virt, frame_len);
 
     iocbq->cmd_dmabuf = pcmd;
     iocbq->vport = vport;
     iocbq->cmd_flag &= ~LPFC_FIP_ELS_ID_MASK;
     iocbq->cmd_flag |= LPFC_USE_FCPWQIDX;
     iocbq->num_bdes = 0;
 
     pwqe = &iocbq->wqe;
     /* fill in BDE's for command */
     pwqe->gen_req.bde.addrHigh = putPaddrHigh(pcmd->phys);
     pwqe->gen_req.bde.addrLow = putPaddrLow(pcmd->phys);
     pwqe->gen_req.bde.tus.f.bdeSize = frame_len;
     pwqe->gen_req.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
 
     pwqe->send_frame.frame_len = frame_len;
     pwqe->send_frame.fc_hdr_wd0 = be32_to_cpu(*((__be32 *)fc_hdr));
     pwqe->send_frame.fc_hdr_wd1 = be32_to_cpu(*((__be32 *)fc_hdr + 1));
     pwqe->send_frame.fc_hdr_wd2 = be32_to_cpu(*((__be32 *)fc_hdr + 2));
     pwqe->send_frame.fc_hdr_wd3 = be32_to_cpu(*((__be32 *)fc_hdr + 3));
     pwqe->send_frame.fc_hdr_wd4 = be32_to_cpu(*((__be32 *)fc_hdr + 4));
     pwqe->send_frame.fc_hdr_wd5 = be32_to_cpu(*((__be32 *)fc_hdr + 5));
 
     pwqe->generic.wqe_com.word7 = 0;
     pwqe->generic.wqe_com.word10 = 0;
 
     bf_set(wqe_cmnd, &pwqe->generic.wqe_com, CMD_SEND_FRAME);
     bf_set(wqe_sof, &pwqe->generic.wqe_com, 0x2E); /* SOF byte */
     bf_set(wqe_eof, &pwqe->generic.wqe_com, 0x41); /* EOF byte */
     bf_set(wqe_lenloc, &pwqe->generic.wqe_com, 1);
     bf_set(wqe_xbl, &pwqe->generic.wqe_com, 1);
     bf_set(wqe_dbde, &pwqe->generic.wqe_com, 1);
     bf_set(wqe_xc, &pwqe->generic.wqe_com, 1);
     bf_set(wqe_cmd_type, &pwqe->generic.wqe_com, 0xA);
     bf_set(wqe_cqid, &pwqe->generic.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
     bf_set(wqe_xri_tag, &pwqe->generic.wqe_com, iocbq->sli4_xritag);
     bf_set(wqe_reqtag, &pwqe->generic.wqe_com, iocbq->iotag);
     bf_set(wqe_class, &pwqe->generic.wqe_com, CLASS3);
     pwqe->generic.wqe_com.abort_tag = iocbq->iotag;
 
     iocbq->cmd_cmpl = lpfc_sli4_mds_loopback_cmpl;
 
     rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocbq, 0);
     if (rc == IOCB_ERROR)
         goto exit;
 
     lpfc_in_buf_free(phba, &dmabuf->dbuf);
     return;
 
 exit:
     lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
             "2023 Unable to process MDS loopback frame\n");
     if (pcmd && pcmd->virt)
         dma_pool_free(phba->lpfc_drb_pool, pcmd->virt, pcmd->phys);
     kfree(pcmd);
     if (iocbq)
         lpfc_sli_release_iocbq(phba, iocbq);
     lpfc_in_buf_free(phba, &dmabuf->dbuf);
 }
 
 /**
  * lpfc_sli4_handle_received_buffer - Handle received buffers from firmware
  * @phba: Pointer to HBA context object.
  * @dmabuf: Pointer to a dmabuf that describes the FC sequence.
  *
  * 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.
  * Worker thread calls lpfc_sli4_handle_received_buffer, which will call the
  * appropriate receive function when the final frame in a sequence is received.
  **/
 void
 lpfc_sli4_handle_received_buffer(struct lpfc_hba *phba,
                  struct hbq_dmabuf *dmabuf)
 {
     struct hbq_dmabuf *seq_dmabuf;
     struct fc_frame_header *fc_hdr;
     struct lpfc_vport *vport;
     uint32_t fcfi;
     uint32_t did;
 
     /* Process each received buffer */
     fc_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
 
     if (fc_hdr->fh_r_ctl == FC_RCTL_MDS_DIAGS ||
         fc_hdr->fh_r_ctl == FC_RCTL_DD_UNSOL_DATA) {
         vport = phba->pport;
         /* Handle MDS Loopback frames */
         if  (!(phba->pport->load_flag & FC_UNLOADING))
             lpfc_sli4_handle_mds_loopback(vport, dmabuf);
         else
             lpfc_in_buf_free(phba, &dmabuf->dbuf);
         return;
     }
 
     /* 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);
         return;
     }
 
     if ((bf_get(lpfc_cqe_code,
             &dmabuf->cq_event.cqe.rcqe_cmpl) == CQE_CODE_RECEIVE_V1))
         fcfi = bf_get(lpfc_rcqe_fcf_id_v1,
                   &dmabuf->cq_event.cqe.rcqe_cmpl);
     else
         fcfi = bf_get(lpfc_rcqe_fcf_id,
                   &dmabuf->cq_event.cqe.rcqe_cmpl);
 
     if (fc_hdr->fh_r_ctl == 0xF4 && fc_hdr->fh_type == 0xFF) {
         vport = phba->pport;
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "2023 MDS Loopback %d bytes\n",
                 bf_get(lpfc_rcqe_length,
                        &dmabuf->cq_event.cqe.rcqe_cmpl));
         /* Handle MDS Loopback frames */
         lpfc_sli4_handle_mds_loopback(vport, dmabuf);
         return;
     }
 
     /* d_id this frame is directed to */
     did = sli4_did_from_fc_hdr(fc_hdr);
 
     vport = lpfc_fc_frame_to_vport(phba, fc_hdr, fcfi, did);
     if (!vport) {
         /* throw out the frame */
         lpfc_in_buf_free(phba, &dmabuf->dbuf);
         return;
     }
 
     /* vport is registered unless we rcv a FLOGI directed to Fabric_DID */
     if (!(vport->vpi_state & LPFC_VPI_REGISTERED) &&
         (did != Fabric_DID)) {
         /*
          * Throw out the frame if we are not pt2pt.
          * The pt2pt protocol allows for discovery frames
          * to be received without a registered VPI.
          */
         if (!(vport->fc_flag & FC_PT2PT) ||
             (phba->link_state == LPFC_HBA_READY)) {
             lpfc_in_buf_free(phba, &dmabuf->dbuf);
             return;
         }
     }
 
     /* Handle the basic abort sequence (BA_ABTS) event */
     if (fc_hdr->fh_r_ctl == FC_RCTL_BA_ABTS) {
         lpfc_sli4_handle_unsol_abort(vport, dmabuf);
         return;
     }
 
     /* 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);
         return;
     }
     /* If not last frame in sequence continue processing frames. */
     if (!lpfc_seq_complete(seq_dmabuf))
         return;
 
     /* Send the complete sequence to the upper layer protocol */
     lpfc_sli4_send_seq_to_ulp(vport, seq_dmabuf);
 }
 
 /**
  * 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 SLI4_PAGE_SIZE memory region to the port to hold up to
  * SLI4_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 - successful
  *      -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;
     uint16_t lrpi = 0;
 
     /* SLI4 ports that support extents do not require RPI headers. */
     if (!phba->sli4_hba.rpi_hdrs_in_use)
         goto exit;
     if (phba->sli4_hba.extents_in_use)
         return -EIO;
 
     list_for_each_entry(rpi_page, &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
         /*
          * Assign the rpi headers a physical rpi only if the driver
          * has not initialized those resources.  A port reset only
          * needs the headers posted.
          */
         if (bf_get(lpfc_rpi_rsrc_rdy, &phba->sli4_hba.sli4_flags) !=
             LPFC_RPI_RSRC_RDY)
             rpi_page->start_rpi = phba->sli4_hba.rpi_ids[lrpi];
 
         rc = lpfc_sli4_post_rpi_hdr(phba, rpi_page);
         if (rc != MBX_SUCCESS) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2008 Error %d posting all rpi "
                     "headers\n", rc);
             rc = -EIO;
             break;
         }
     }
 
  exit:
     bf_set(lpfc_rpi_rsrc_rdy, &phba->sli4_hba.sli4_flags,
            LPFC_RPI_RSRC_RDY);
     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 - successful
  *  -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 shdr_status, shdr_add_status;
     union lpfc_sli4_cfg_shdr *shdr;
 
     /* SLI4 ports that support extents do not require RPI headers. */
     if (!phba->sli4_hba.rpi_hdrs_in_use)
         return rc;
     if (phba->sli4_hba.extents_in_use)
         return -EIO;
 
     /* 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_TRACE_EVENT,
                 "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;
     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 lpfc_sli4_cfg_mhdr),
              LPFC_SLI4_MBX_EMBED);
 
 
     /* Post the physical rpi to the port for this rpi header. */
     bf_set(lpfc_mbx_post_hdr_tmpl_rpi_offset, hdr_tmpl,
            rpi_page->start_rpi);
     bf_set(lpfc_mbx_post_hdr_tmpl_page_cnt,
            hdr_tmpl, rpi_page->page_count);
 
     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);
     mempool_free(mboxq, phba->mbox_mem_pool);
     if (shdr_status || shdr_add_status || rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "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;
     } else {
         /*
          * The next_rpi stores the next logical module-64 rpi value used
          * to post physical rpis in subsequent rpi postings.
          */
         spin_lock_irq(&phba->hbalock);
         phba->sli4_hba.next_rpi = rpi_page->next_rpi;
         spin_unlock_irq(&phba->hbalock);
     }
     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 SLI4_PAGE_SIZE memory region to the port to hold up to
  * SLI4_PAGE_SIZE modulo 64 rpi context headers.
  *
  * Returns
  *  A nonzero rpi defined as rpi_base <= rpi < max_rpi if successful
  *  LPFC_RPI_ALLOC_ERROR if no rpis are available.
  **/
 int
 lpfc_sli4_alloc_rpi(struct lpfc_hba *phba)
 {
     unsigned long rpi;
     uint16_t max_rpi, rpi_limit;
     uint16_t rpi_remaining, lrpi = 0;
     struct lpfc_rpi_hdr *rpi_hdr;
     unsigned long iflag;
 
     /*
      * Fetch the next logical rpi.  Because this index is logical,
      * the  driver starts at 0 each time.
      */
     spin_lock_irqsave(&phba->hbalock, iflag);
     max_rpi = phba->sli4_hba.max_cfg_param.max_rpi;
     rpi_limit = phba->sli4_hba.next_rpi;
 
     rpi = find_first_zero_bit(phba->sli4_hba.rpi_bmask, rpi_limit);
     if (rpi >= rpi_limit)
         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++;
     }
     lpfc_printf_log(phba, KERN_INFO,
             LOG_NODE | LOG_DISCOVERY,
             "0001 Allocated rpi:x%x max:x%x lim:x%x\n",
             (int) rpi, max_rpi, rpi_limit);
 
     /*
      * Don't try to allocate more rpi header regions if the device limit
      * has been exhausted.
      */
     if ((rpi == LPFC_RPI_ALLOC_ERROR) &&
         (phba->sli4_hba.rpi_count >= max_rpi)) {
         spin_unlock_irqrestore(&phba->hbalock, iflag);
         return rpi;
     }
 
     /*
      * RPI header postings are not required for SLI4 ports capable of
      * extents.
      */
     if (!phba->sli4_hba.rpi_hdrs_in_use) {
         spin_unlock_irqrestore(&phba->hbalock, iflag);
         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 - phba->sli4_hba.rpi_count;
     spin_unlock_irqrestore(&phba->hbalock, iflag);
     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_TRACE_EVENT,
                     "2002 Error Could not grow rpi "
                     "count\n");
         } else {
             lrpi = rpi_hdr->start_rpi;
             rpi_hdr->start_rpi = phba->sli4_hba.rpi_ids[lrpi];
             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.
  * @rpi: rpi to free
  *
  * This routine is invoked to release an rpi to the pool of
  * available rpis maintained by the driver.
  **/
 static void
 __lpfc_sli4_free_rpi(struct lpfc_hba *phba, int rpi)
 {
     /*
      * if the rpi value indicates a prior unreg has already
      * been done, skip the unreg.
      */
     if (rpi == LPFC_RPI_ALLOC_ERROR)
         return;
 
     if (test_and_clear_bit(rpi, phba->sli4_hba.rpi_bmask)) {
         phba->sli4_hba.rpi_count--;
         phba->sli4_hba.max_cfg_param.rpi_used--;
     } else {
         lpfc_printf_log(phba, KERN_INFO,
                 LOG_NODE | LOG_DISCOVERY,
                 "2016 rpi %x not inuse\n",
                 rpi);
     }
 }
 
 /**
  * lpfc_sli4_free_rpi - Release an rpi for reuse.
  * @phba: pointer to lpfc hba data structure.
  * @rpi: rpi to free
  *
  * 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);
     __lpfc_sli4_free_rpi(phba, rpi);
     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);
     kfree(phba->sli4_hba.rpi_ids);
     bf_set(lpfc_rpi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0);
 }
 
 /**
  * lpfc_sli4_resume_rpi - Remove the rpi bitmask region
  * @ndlp: pointer to lpfc nodelist data structure.
  * @cmpl: completion call-back.
  * @arg: data to load as MBox 'caller buffer information'
  *
  * This routine is invoked to remove the memory region that
  * provided rpi via a bitmask.
  **/
 int
 lpfc_sli4_resume_rpi(struct lpfc_nodelist *ndlp,
     void (*cmpl)(struct lpfc_hba *, LPFC_MBOXQ_t *), void *arg)
 {
     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;
 
     /* If cmpl assigned, then this nlp_get pairs with
      * lpfc_mbx_cmpl_resume_rpi.
      *
      * Else cmpl is NULL, then this nlp_get pairs with
      * lpfc_sli_def_mbox_cmpl.
      */
     if (!lpfc_nlp_get(ndlp)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2122 %s: Failed to get nlp ref\n",
                 __func__);
         mempool_free(mboxq, phba->mbox_mem_pool);
         return -EIO;
     }
 
     /* Post all rpi memory regions to the port. */
     lpfc_resume_rpi(mboxq, ndlp);
     if (cmpl) {
         mboxq->mbox_cmpl = cmpl;
         mboxq->ctx_buf = arg;
     } else
         mboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
     mboxq->ctx_ndlp = ndlp;
     mboxq->vport = ndlp->vport;
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2010 Resume RPI Mailbox failed "
                 "status %d, mbxStatus x%x\n", rc,
                 bf_get(lpfc_mqe_status, &mboxq->u.mqe));
         lpfc_nlp_put(ndlp);
         mempool_free(mboxq, phba->mbox_mem_pool);
         return -EIO;
     }
     return 0;
 }
 
 /**
  * lpfc_sli4_init_vpi - Initialize a vpi with the port
  * @vport: Pointer to the vport for which the vpi is being initialized
  *
  * This routine is invoked to activate a vpi with the port.
  *
  * Returns:
  *    0 success
  *    -Evalue otherwise
  **/
 int
 lpfc_sli4_init_vpi(struct lpfc_vport *vport)
 {
     LPFC_MBOXQ_t *mboxq;
     int rc = 0;
     int retval = MBX_SUCCESS;
     uint32_t mbox_tmo;
     struct lpfc_hba *phba = vport->phba;
     mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq)
         return -ENOMEM;
     lpfc_init_vpi(phba, mboxq, vport->vpi);
     mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
     rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
     if (rc != MBX_SUCCESS) {
         lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
                 "2022 INIT VPI Mailbox failed "
                 "status %d, mbxStatus x%x\n", rc,
                 bf_get(lpfc_mqe_status, &mboxq->u.mqe));
         retval = -EIO;
     }
     if (rc != MBX_TIMEOUT)
         mempool_free(mboxq, vport->phba->mbox_mem_pool);
 
     return retval;
 }
 
 /**
  * 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_TRACE_EVENT,
             "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;
     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_TRACE_EVENT,
             "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_TRACE_EVENT,
             "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);
     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_TRACE_EVENT,
             "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_fcf_scan_read_fcf_rec - Read hba fcf record for fcf scan.
  * @phba: pointer to lpfc hba data structure.
  * @fcf_index: FCF table entry offset.
  *
  * This routine is invoked to scan the entire FCF table by reading FCF
  * record and processing it one at a time starting from the @fcf_index
  * for initial FCF discovery or fast FCF failover rediscovery.
  *
  * Return 0 if the mailbox command is submitted successfully, none 0
  * otherwise.
  **/
 int
 lpfc_sli4_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index)
 {
     int rc = 0, error;
     LPFC_MBOXQ_t *mboxq;
 
     phba->fcoe_eventtag_at_fcf_scan = phba->fcoe_eventtag;
     phba->fcoe_cvl_eventtag_attn = phba->fcoe_cvl_eventtag;
     mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2000 Failed to allocate mbox for "
                 "READ_FCF cmd\n");
         error = -ENOMEM;
         goto fail_fcf_scan;
     }
     /* Construct the read FCF record mailbox command */
     rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index);
     if (rc) {
         error = -EINVAL;
         goto fail_fcf_scan;
     }
     /* Issue the mailbox command asynchronously */
     mboxq->vport = phba->pport;
     mboxq->mbox_cmpl = lpfc_mbx_cmpl_fcf_scan_read_fcf_rec;
 
     spin_lock_irq(&phba->hbalock);
     phba->hba_flag |= FCF_TS_INPROG;
     spin_unlock_irq(&phba->hbalock);
 
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED)
         error = -EIO;
     else {
         /* Reset eligible FCF count for new scan */
         if (fcf_index == LPFC_FCOE_FCF_GET_FIRST)
             phba->fcf.eligible_fcf_cnt = 0;
         error = 0;
     }
 fail_fcf_scan:
     if (error) {
         if (mboxq)
             lpfc_sli4_mbox_cmd_free(phba, mboxq);
         /* FCF scan failed, clear FCF_TS_INPROG flag */
         spin_lock_irq(&phba->hbalock);
         phba->hba_flag &= ~FCF_TS_INPROG;
         spin_unlock_irq(&phba->hbalock);
     }
     return error;
 }
 
 /**
  * lpfc_sli4_fcf_rr_read_fcf_rec - Read hba fcf record for roundrobin fcf.
  * @phba: pointer to lpfc hba data structure.
  * @fcf_index: FCF table entry offset.
  *
  * This routine is invoked to read an FCF record indicated by @fcf_index
  * and to use it for FLOGI roundrobin FCF failover.
  *
  * Return 0 if the mailbox command is submitted successfully, none 0
  * otherwise.
  **/
 int
 lpfc_sli4_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index)
 {
     int rc = 0, error;
     LPFC_MBOXQ_t *mboxq;
 
     mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq) {
         lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_INIT,
                 "2763 Failed to allocate mbox for "
                 "READ_FCF cmd\n");
         error = -ENOMEM;
         goto fail_fcf_read;
     }
     /* Construct the read FCF record mailbox command */
     rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index);
     if (rc) {
         error = -EINVAL;
         goto fail_fcf_read;
     }
     /* Issue the mailbox command asynchronously */
     mboxq->vport = phba->pport;
     mboxq->mbox_cmpl = lpfc_mbx_cmpl_fcf_rr_read_fcf_rec;
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED)
         error = -EIO;
     else
         error = 0;
 
 fail_fcf_read:
     if (error && mboxq)
         lpfc_sli4_mbox_cmd_free(phba, mboxq);
     return error;
 }
 
 /**
  * lpfc_sli4_read_fcf_rec - Read hba fcf record for update eligible fcf bmask.
  * @phba: pointer to lpfc hba data structure.
  * @fcf_index: FCF table entry offset.
  *
  * This routine is invoked to read an FCF record indicated by @fcf_index to
  * determine whether it's eligible for FLOGI roundrobin failover list.
  *
  * Return 0 if the mailbox command is submitted successfully, none 0
  * otherwise.
  **/
 int
 lpfc_sli4_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index)
 {
     int rc = 0, error;
     LPFC_MBOXQ_t *mboxq;
 
     mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq) {
         lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_INIT,
                 "2758 Failed to allocate mbox for "
                 "READ_FCF cmd\n");
                 error = -ENOMEM;
                 goto fail_fcf_read;
     }
     /* Construct the read FCF record mailbox command */
     rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index);
     if (rc) {
         error = -EINVAL;
         goto fail_fcf_read;
     }
     /* Issue the mailbox command asynchronously */
     mboxq->vport = phba->pport;
     mboxq->mbox_cmpl = lpfc_mbx_cmpl_read_fcf_rec;
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED)
         error = -EIO;
     else
         error = 0;
 
 fail_fcf_read:
     if (error && mboxq)
         lpfc_sli4_mbox_cmd_free(phba, mboxq);
     return error;
 }
 
 /**
  * lpfc_check_next_fcf_pri_level
  * @phba: pointer to the lpfc_hba struct for this port.
  * This routine is called from the lpfc_sli4_fcf_rr_next_index_get
  * routine when the rr_bmask is empty. The FCF indecies are put into the
  * rr_bmask based on their priority level. Starting from the highest priority
  * to the lowest. The most likely FCF candidate will be in the highest
  * priority group. When this routine is called it searches the fcf_pri list for
  * next lowest priority group and repopulates the rr_bmask with only those
  * fcf_indexes.
  * returns:
  * 1=success 0=failure
  **/
 static int
 lpfc_check_next_fcf_pri_level(struct lpfc_hba *phba)
 {
     uint16_t next_fcf_pri;
     uint16_t last_index;
     struct lpfc_fcf_pri *fcf_pri;
     int rc;
     int ret = 0;
 
     last_index = find_first_bit(phba->fcf.fcf_rr_bmask,
             LPFC_SLI4_FCF_TBL_INDX_MAX);
     lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
             "3060 Last IDX %d\n", last_index);
 
     /* Verify the priority list has 2 or more entries */
     spin_lock_irq(&phba->hbalock);
     if (list_empty(&phba->fcf.fcf_pri_list) ||
         list_is_singular(&phba->fcf.fcf_pri_list)) {
         spin_unlock_irq(&phba->hbalock);
         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
             "3061 Last IDX %d\n", last_index);
         return 0; /* Empty rr list */
     }
     spin_unlock_irq(&phba->hbalock);
 
     next_fcf_pri = 0;
     /*
      * Clear the rr_bmask and set all of the bits that are at this
      * priority.
      */
     memset(phba->fcf.fcf_rr_bmask, 0,
             sizeof(*phba->fcf.fcf_rr_bmask));
     spin_lock_irq(&phba->hbalock);
     list_for_each_entry(fcf_pri, &phba->fcf.fcf_pri_list, list) {
         if (fcf_pri->fcf_rec.flag & LPFC_FCF_FLOGI_FAILED)
             continue;
         /*
          * the 1st priority that has not FLOGI failed
          * will be the highest.
          */
         if (!next_fcf_pri)
             next_fcf_pri = fcf_pri->fcf_rec.priority;
         spin_unlock_irq(&phba->hbalock);
         if (fcf_pri->fcf_rec.priority == next_fcf_pri) {
             rc = lpfc_sli4_fcf_rr_index_set(phba,
                         fcf_pri->fcf_rec.fcf_index);
             if (rc)
                 return 0;
         }
         spin_lock_irq(&phba->hbalock);
     }
     /*
      * if next_fcf_pri was not set above and the list is not empty then
      * we have failed flogis on all of them. So reset flogi failed
      * and start at the beginning.
      */
     if (!next_fcf_pri && !list_empty(&phba->fcf.fcf_pri_list)) {
         list_for_each_entry(fcf_pri, &phba->fcf.fcf_pri_list, list) {
             fcf_pri->fcf_rec.flag &= ~LPFC_FCF_FLOGI_FAILED;
             /*
              * the 1st priority that has not FLOGI failed
              * will be the highest.
              */
             if (!next_fcf_pri)
                 next_fcf_pri = fcf_pri->fcf_rec.priority;
             spin_unlock_irq(&phba->hbalock);
             if (fcf_pri->fcf_rec.priority == next_fcf_pri) {
                 rc = lpfc_sli4_fcf_rr_index_set(phba,
                         fcf_pri->fcf_rec.fcf_index);
                 if (rc)
                     return 0;
             }
             spin_lock_irq(&phba->hbalock);
         }
     } else
         ret = 1;
     spin_unlock_irq(&phba->hbalock);
 
     return ret;
 }
 /**
  * lpfc_sli4_fcf_rr_next_index_get - Get next eligible fcf record index
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is to get the next eligible FCF record index in a round
  * robin fashion. If the next eligible FCF record index equals to the
  * initial roundrobin FCF record index, LPFC_FCOE_FCF_NEXT_NONE (0xFFFF)
  * shall be returned, otherwise, the next eligible FCF record's index
  * shall be returned.
  **/
 uint16_t
 lpfc_sli4_fcf_rr_next_index_get(struct lpfc_hba *phba)
 {
     uint16_t next_fcf_index;
 
 initial_priority:
     /* Search start from next bit of currently registered FCF index */
     next_fcf_index = phba->fcf.current_rec.fcf_indx;
 
 next_priority:
     /* Determine the next fcf index to check */
     next_fcf_index = (next_fcf_index + 1) % LPFC_SLI4_FCF_TBL_INDX_MAX;
     next_fcf_index = find_next_bit(phba->fcf.fcf_rr_bmask,
                        LPFC_SLI4_FCF_TBL_INDX_MAX,
                        next_fcf_index);
 
     /* Wrap around condition on phba->fcf.fcf_rr_bmask */
     if (next_fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
         /*
          * If we have wrapped then we need to clear the bits that
          * have been tested so that we can detect when we should
          * change the priority level.
          */
         next_fcf_index = find_first_bit(phba->fcf.fcf_rr_bmask,
                            LPFC_SLI4_FCF_TBL_INDX_MAX);
     }
 
 
     /* Check roundrobin failover list empty condition */
     if (next_fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX ||
         next_fcf_index == phba->fcf.current_rec.fcf_indx) {
         /*
          * If next fcf index is not found check if there are lower
          * Priority level fcf's in the fcf_priority list.
          * Set up the rr_bmask with all of the avaiable fcf bits
          * at that level and continue the selection process.
          */
         if (lpfc_check_next_fcf_pri_level(phba))
             goto initial_priority;
         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP,
                 "2844 No roundrobin failover FCF available\n");
 
         return LPFC_FCOE_FCF_NEXT_NONE;
     }
 
     if (next_fcf_index < LPFC_SLI4_FCF_TBL_INDX_MAX &&
         phba->fcf.fcf_pri[next_fcf_index].fcf_rec.flag &
         LPFC_FCF_FLOGI_FAILED) {
         if (list_is_singular(&phba->fcf.fcf_pri_list))
             return LPFC_FCOE_FCF_NEXT_NONE;
 
         goto next_priority;
     }
 
     lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
             "2845 Get next roundrobin failover FCF (x%x)\n",
             next_fcf_index);
 
     return next_fcf_index;
 }
 
 /**
  * lpfc_sli4_fcf_rr_index_set - Set bmask with eligible fcf record index
  * @phba: pointer to lpfc hba data structure.
  * @fcf_index: index into the FCF table to 'set'
  *
  * This routine sets the FCF record index in to the eligible bmask for
  * roundrobin failover search. It checks to make sure that the index
  * does not go beyond the range of the driver allocated bmask dimension
  * before setting the bit.
  *
  * Returns 0 if the index bit successfully set, otherwise, it returns
  * -EINVAL.
  **/
 int
 lpfc_sli4_fcf_rr_index_set(struct lpfc_hba *phba, uint16_t fcf_index)
 {
     if (fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
                 "2610 FCF (x%x) reached driver's book "
                 "keeping dimension:x%x\n",
                 fcf_index, LPFC_SLI4_FCF_TBL_INDX_MAX);
         return -EINVAL;
     }
     /* Set the eligible FCF record index bmask */
     set_bit(fcf_index, phba->fcf.fcf_rr_bmask);
 
     lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
             "2790 Set FCF (x%x) to roundrobin FCF failover "
             "bmask\n", fcf_index);
 
     return 0;
 }
 
 /**
  * lpfc_sli4_fcf_rr_index_clear - Clear bmask from eligible fcf record index
  * @phba: pointer to lpfc hba data structure.
  * @fcf_index: index into the FCF table to 'clear'
  *
  * This routine clears the FCF record index from the eligible bmask for
  * roundrobin failover search. It checks to make sure that the index
  * does not go beyond the range of the driver allocated bmask dimension
  * before clearing the bit.
  **/
 void
 lpfc_sli4_fcf_rr_index_clear(struct lpfc_hba *phba, uint16_t fcf_index)
 {
     struct lpfc_fcf_pri *fcf_pri, *fcf_pri_next;
     if (fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) {
         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
                 "2762 FCF (x%x) reached driver's book "
                 "keeping dimension:x%x\n",
                 fcf_index, LPFC_SLI4_FCF_TBL_INDX_MAX);
         return;
     }
     /* Clear the eligible FCF record index bmask */
     spin_lock_irq(&phba->hbalock);
     list_for_each_entry_safe(fcf_pri, fcf_pri_next, &phba->fcf.fcf_pri_list,
                  list) {
         if (fcf_pri->fcf_rec.fcf_index == fcf_index) {
             list_del_init(&fcf_pri->list);
             break;
         }
     }
     spin_unlock_irq(&phba->hbalock);
     clear_bit(fcf_index, phba->fcf.fcf_rr_bmask);
 
     lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
             "2791 Clear FCF (x%x) from roundrobin failover "
             "bmask\n", fcf_index);
 }
 
 /**
  * lpfc_mbx_cmpl_redisc_fcf_table - completion routine for rediscover FCF table
  * @phba: pointer to lpfc hba data structure.
  * @mbox: An allocated pointer to type LPFC_MBOXQ_t
  *
  * This routine is the completion routine for the rediscover FCF table mailbox
  * command. If the mailbox command returned failure, it will try to stop the
  * FCF rediscover wait timer.
  **/
 static void
 lpfc_mbx_cmpl_redisc_fcf_table(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbox)
 {
     struct lpfc_mbx_redisc_fcf_tbl *redisc_fcf;
     uint32_t shdr_status, shdr_add_status;
 
     redisc_fcf = &mbox->u.mqe.un.redisc_fcf_tbl;
 
     shdr_status = bf_get(lpfc_mbox_hdr_status,
                  &redisc_fcf->header.cfg_shdr.response);
     shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
                  &redisc_fcf->header.cfg_shdr.response);
     if (shdr_status || shdr_add_status) {
         lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
                 "2746 Requesting for FCF rediscovery failed "
                 "status x%x add_status x%x\n",
                 shdr_status, shdr_add_status);
         if (phba->fcf.fcf_flag & FCF_ACVL_DISC) {
             spin_lock_irq(&phba->hbalock);
             phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
             spin_unlock_irq(&phba->hbalock);
             /*
              * CVL event triggered FCF rediscover request failed,
              * last resort to re-try current registered FCF entry.
              */
             lpfc_retry_pport_discovery(phba);
         } else {
             spin_lock_irq(&phba->hbalock);
             phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
             spin_unlock_irq(&phba->hbalock);
             /*
              * DEAD FCF event triggered FCF rediscover request
              * failed, last resort to fail over as a link down
              * to FCF registration.
              */
             lpfc_sli4_fcf_dead_failthrough(phba);
         }
     } else {
         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
                 "2775 Start FCF rediscover quiescent timer\n");
         /*
          * Start FCF rediscovery wait timer for pending FCF
          * before rescan FCF record table.
          */
         lpfc_fcf_redisc_wait_start_timer(phba);
     }
 
     mempool_free(mbox, phba->mbox_mem_pool);
 }
 
 /**
  * lpfc_sli4_redisc_fcf_table - Request to rediscover entire FCF table by port.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to request for rediscovery of the entire FCF table
  * by the port.
  **/
 int
 lpfc_sli4_redisc_fcf_table(struct lpfc_hba *phba)
 {
     LPFC_MBOXQ_t *mbox;
     struct lpfc_mbx_redisc_fcf_tbl *redisc_fcf;
     int rc, length;
 
     /* Cancel retry delay timers to all vports before FCF rediscover */
     lpfc_cancel_all_vport_retry_delay_timer(phba);
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2745 Failed to allocate mbox for "
                 "requesting FCF rediscover.\n");
         return -ENOMEM;
     }
 
     length = (sizeof(struct lpfc_mbx_redisc_fcf_tbl) -
           sizeof(struct lpfc_sli4_cfg_mhdr));
     lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
              LPFC_MBOX_OPCODE_FCOE_REDISCOVER_FCF,
              length, LPFC_SLI4_MBX_EMBED);
 
     redisc_fcf = &mbox->u.mqe.un.redisc_fcf_tbl;
     /* Set count to 0 for invalidating the entire FCF database */
     bf_set(lpfc_mbx_redisc_fcf_count, redisc_fcf, 0);
 
     /* Issue the mailbox command asynchronously */
     mbox->vport = phba->pport;
     mbox->mbox_cmpl = lpfc_mbx_cmpl_redisc_fcf_table;
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
 
     if (rc == MBX_NOT_FINISHED) {
         mempool_free(mbox, phba->mbox_mem_pool);
         return -EIO;
     }
     return 0;
 }
 
 /**
  * lpfc_sli4_fcf_dead_failthrough - Failthrough routine to fcf dead event
  * @phba: pointer to lpfc hba data structure.
  *
  * This function is the failover routine as a last resort to the FCF DEAD
  * event when driver failed to perform fast FCF failover.
  **/
 void
 lpfc_sli4_fcf_dead_failthrough(struct lpfc_hba *phba)
 {
     uint32_t link_state;
 
     /*
      * Last resort as FCF DEAD event failover will treat this as
      * a link down, but save the link state because we don't want
      * it to be changed to Link Down unless it is already down.
      */
     link_state = phba->link_state;
     lpfc_linkdown(phba);
     phba->link_state = link_state;
 
     /* Unregister FCF if no devices connected to it */
     lpfc_unregister_unused_fcf(phba);
 }
 
 /**
  * lpfc_sli_get_config_region23 - Get sli3 port region 23 data.
  * @phba: pointer to lpfc hba data structure.
  * @rgn23_data: pointer to configure region 23 data.
  *
  * This function gets SLI3 port configure region 23 data through memory dump
  * mailbox command. When it successfully retrieves data, the size of the data
  * will be returned, otherwise, 0 will be returned.
  **/
 static uint32_t
 lpfc_sli_get_config_region23(struct lpfc_hba *phba, char *rgn23_data)
 {
     LPFC_MBOXQ_t *pmb = NULL;
     MAILBOX_t *mb;
     uint32_t offset = 0;
     int rc;
 
     if (!rgn23_data)
         return 0;
 
     pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!pmb) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2600 failed to allocate mailbox memory\n");
         return 0;
     }
     mb = &pmb->u.mb;
 
     do {
         lpfc_dump_mem(phba, pmb, offset, DMP_REGION_23);
         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 
         if (rc != MBX_SUCCESS) {
             lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                     "2601 failed to read config "
                     "region 23, rc 0x%x Status 0x%x\n",
                     rc, mb->mbxStatus);
             mb->un.varDmp.word_cnt = 0;
         }
         /*
          * dump mem may return a zero when finished or we got a
          * mailbox error, either way we are done.
          */
         if (mb->un.varDmp.word_cnt == 0)
             break;
 
         if (mb->un.varDmp.word_cnt > DMP_RGN23_SIZE - offset)
             mb->un.varDmp.word_cnt = DMP_RGN23_SIZE - offset;
 
         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
                        rgn23_data + offset,
                        mb->un.varDmp.word_cnt);
         offset += mb->un.varDmp.word_cnt;
     } while (mb->un.varDmp.word_cnt && offset < DMP_RGN23_SIZE);
 
     mempool_free(pmb, phba->mbox_mem_pool);
     return offset;
 }
 
 /**
  * lpfc_sli4_get_config_region23 - Get sli4 port region 23 data.
  * @phba: pointer to lpfc hba data structure.
  * @rgn23_data: pointer to configure region 23 data.
  *
  * This function gets SLI4 port configure region 23 data through memory dump
  * mailbox command. When it successfully retrieves data, the size of the data
  * will be returned, otherwise, 0 will be returned.
  **/
 static uint32_t
 lpfc_sli4_get_config_region23(struct lpfc_hba *phba, char *rgn23_data)
 {
     LPFC_MBOXQ_t *mboxq = NULL;
     struct lpfc_dmabuf *mp = NULL;
     struct lpfc_mqe *mqe;
     uint32_t data_length = 0;
     int rc;
 
     if (!rgn23_data)
         return 0;
 
     mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3105 failed to allocate mailbox memory\n");
         return 0;
     }
 
     if (lpfc_sli4_dump_cfg_rg23(phba, mboxq))
         goto out;
     mqe = &mboxq->u.mqe;
     mp = (struct lpfc_dmabuf *)mboxq->ctx_buf;
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
     if (rc)
         goto out;
     data_length = mqe->un.mb_words[5];
     if (data_length == 0)
         goto out;
     if (data_length > DMP_RGN23_SIZE) {
         data_length = 0;
         goto out;
     }
     lpfc_sli_pcimem_bcopy((char *)mp->virt, rgn23_data, data_length);
 out:
     lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
     return data_length;
 }
 
 /**
  * lpfc_sli_read_link_ste - Read region 23 to decide if link is disabled.
  * @phba: pointer to lpfc hba data structure.
  *
  * This function read region 23 and parse TLV for port status to
  * decide if the user disaled the port. If the TLV indicates the
  * port is disabled, the hba_flag is set accordingly.
  **/
 void
 lpfc_sli_read_link_ste(struct lpfc_hba *phba)
 {
     uint8_t *rgn23_data = NULL;
     uint32_t if_type, data_size, sub_tlv_len, tlv_offset;
     uint32_t offset = 0;
 
     /* Get adapter Region 23 data */
     rgn23_data = kzalloc(DMP_RGN23_SIZE, GFP_KERNEL);
     if (!rgn23_data)
         goto out;
 
     if (phba->sli_rev < LPFC_SLI_REV4)
         data_size = lpfc_sli_get_config_region23(phba, rgn23_data);
     else {
         if_type = bf_get(lpfc_sli_intf_if_type,
                  &phba->sli4_hba.sli_intf);
         if (if_type == LPFC_SLI_INTF_IF_TYPE_0)
             goto out;
         data_size = lpfc_sli4_get_config_region23(phba, rgn23_data);
     }
 
     if (!data_size)
         goto out;
 
     /* Check the region signature first */
     if (memcmp(&rgn23_data[offset], LPFC_REGION23_SIGNATURE, 4)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "2619 Config region 23 has bad signature\n");
             goto out;
     }
     offset += 4;
 
     /* Check the data structure version */
     if (rgn23_data[offset] != LPFC_REGION23_VERSION) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "2620 Config region 23 has bad version\n");
         goto out;
     }
     offset += 4;
 
     /* Parse TLV entries in the region */
     while (offset < data_size) {
         if (rgn23_data[offset] == LPFC_REGION23_LAST_REC)
             break;
         /*
          * If the TLV is not driver specific TLV or driver id is
          * not linux driver id, skip the record.
          */
         if ((rgn23_data[offset] != DRIVER_SPECIFIC_TYPE) ||
             (rgn23_data[offset + 2] != LINUX_DRIVER_ID) ||
             (rgn23_data[offset + 3] != 0)) {
             offset += rgn23_data[offset + 1] * 4 + 4;
             continue;
         }
 
         /* Driver found a driver specific TLV in the config region */
         sub_tlv_len = rgn23_data[offset + 1] * 4;
         offset += 4;
         tlv_offset = 0;
 
         /*
          * Search for configured port state sub-TLV.
          */
         while ((offset < data_size) &&
             (tlv_offset < sub_tlv_len)) {
             if (rgn23_data[offset] == LPFC_REGION23_LAST_REC) {
                 offset += 4;
                 tlv_offset += 4;
                 break;
             }
             if (rgn23_data[offset] != PORT_STE_TYPE) {
                 offset += rgn23_data[offset + 1] * 4 + 4;
                 tlv_offset += rgn23_data[offset + 1] * 4 + 4;
                 continue;
             }
 
             /* This HBA contains PORT_STE configured */
             if (!rgn23_data[offset + 2])
                 phba->hba_flag |= LINK_DISABLED;
 
             goto out;
         }
     }
 
 out:
     kfree(rgn23_data);
     return;
 }
 
 /**
  * lpfc_log_fw_write_cmpl - logs firmware write completion status
  * @phba: pointer to lpfc hba data structure
  * @shdr_status: wr_object rsp's status field
  * @shdr_add_status: wr_object rsp's add_status field
  * @shdr_add_status_2: wr_object rsp's add_status_2 field
  * @shdr_change_status: wr_object rsp's change_status field
  * @shdr_csf: wr_object rsp's csf bit
  *
  * This routine is intended to be called after a firmware write completes.
  * It will log next action items to be performed by the user to instantiate
  * the newly downloaded firmware or reason for incompatibility.
  **/
 static void
 lpfc_log_fw_write_cmpl(struct lpfc_hba *phba, u32 shdr_status,
                u32 shdr_add_status, u32 shdr_add_status_2,
                u32 shdr_change_status, u32 shdr_csf)
 {
     lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
             "4198 %s: flash_id x%02x, asic_rev x%02x, "
             "status x%02x, add_status x%02x, add_status_2 x%02x, "
             "change_status x%02x, csf %01x\n", __func__,
             phba->sli4_hba.flash_id, phba->sli4_hba.asic_rev,
             shdr_status, shdr_add_status, shdr_add_status_2,
             shdr_change_status, shdr_csf);
 
     if (shdr_add_status == LPFC_ADD_STATUS_INCOMPAT_OBJ) {
         switch (shdr_add_status_2) {
         case LPFC_ADD_STATUS_2_INCOMPAT_FLASH:
             lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
                     "4199 Firmware write failed: "
                     "image incompatible with flash x%02x\n",
                     phba->sli4_hba.flash_id);
             break;
         case LPFC_ADD_STATUS_2_INCORRECT_ASIC:
             lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
                     "4200 Firmware write failed: "
                     "image incompatible with ASIC "
                     "architecture x%02x\n",
                     phba->sli4_hba.asic_rev);
             break;
         default:
             lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
                     "4210 Firmware write failed: "
                     "add_status_2 x%02x\n",
                     shdr_add_status_2);
             break;
         }
     } else if (!shdr_status && !shdr_add_status) {
         if (shdr_change_status == LPFC_CHANGE_STATUS_FW_RESET ||
             shdr_change_status == LPFC_CHANGE_STATUS_PORT_MIGRATION) {
             if (shdr_csf)
                 shdr_change_status =
                            LPFC_CHANGE_STATUS_PCI_RESET;
         }
 
         switch (shdr_change_status) {
         case (LPFC_CHANGE_STATUS_PHYS_DEV_RESET):
             lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
                     "3198 Firmware write complete: System "
                     "reboot required to instantiate\n");
             break;
         case (LPFC_CHANGE_STATUS_FW_RESET):
             lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
                     "3199 Firmware write complete: "
                     "Firmware reset required to "
                     "instantiate\n");
             break;
         case (LPFC_CHANGE_STATUS_PORT_MIGRATION):
             lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
                     "3200 Firmware write complete: Port "
                     "Migration or PCI Reset required to "
                     "instantiate\n");
             break;
         case (LPFC_CHANGE_STATUS_PCI_RESET):
             lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
                     "3201 Firmware write complete: PCI "
                     "Reset required to instantiate\n");
             break;
         default:
             break;
         }
     }
 }
 
 /**
  * lpfc_wr_object - write an object to the firmware
  * @phba: HBA structure that indicates port to create a queue on.
  * @dmabuf_list: list of dmabufs to write to the port.
  * @size: the total byte value of the objects to write to the port.
  * @offset: the current offset to be used to start the transfer.
  *
  * This routine will create a wr_object mailbox command to send to the port.
  * the mailbox command will be constructed using the dma buffers described in
  * @dmabuf_list to create a list of BDEs. This routine will fill in as many
  * BDEs that the imbedded mailbox can support. The @offset variable will be
  * used to indicate the starting offset of the transfer and will also return
  * the offset after the write object mailbox has completed. @size is used to
  * determine the end of the object and whether the eof bit should be set.
  *
  * Return 0 is successful and offset will contain the the new offset to use
  * for the next write.
  * Return negative value for error cases.
  **/
 int
 lpfc_wr_object(struct lpfc_hba *phba, struct list_head *dmabuf_list,
            uint32_t size, uint32_t *offset)
 {
     struct lpfc_mbx_wr_object *wr_object;
     LPFC_MBOXQ_t *mbox;
     int rc = 0, i = 0;
     uint32_t shdr_status, shdr_add_status, shdr_add_status_2;
     uint32_t shdr_change_status = 0, shdr_csf = 0;
     uint32_t mbox_tmo;
     struct lpfc_dmabuf *dmabuf;
     uint32_t written = 0;
     bool check_change_status = false;
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox)
         return -ENOMEM;
 
     lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
             LPFC_MBOX_OPCODE_WRITE_OBJECT,
             sizeof(struct lpfc_mbx_wr_object) -
             sizeof(struct lpfc_sli4_cfg_mhdr), LPFC_SLI4_MBX_EMBED);
 
     wr_object = (struct lpfc_mbx_wr_object *)&mbox->u.mqe.un.wr_object;
     wr_object->u.request.write_offset = *offset;
     sprintf((uint8_t *)wr_object->u.request.object_name, "/");
     wr_object->u.request.object_name[0] =
         cpu_to_le32(wr_object->u.request.object_name[0]);
     bf_set(lpfc_wr_object_eof, &wr_object->u.request, 0);
     list_for_each_entry(dmabuf, dmabuf_list, list) {
         if (i >= LPFC_MBX_WR_CONFIG_MAX_BDE || written >= size)
             break;
         wr_object->u.request.bde[i].addrLow = putPaddrLow(dmabuf->phys);
         wr_object->u.request.bde[i].addrHigh =
             putPaddrHigh(dmabuf->phys);
         if (written + SLI4_PAGE_SIZE >= size) {
             wr_object->u.request.bde[i].tus.f.bdeSize =
                 (size - written);
             written += (size - written);
             bf_set(lpfc_wr_object_eof, &wr_object->u.request, 1);
             bf_set(lpfc_wr_object_eas, &wr_object->u.request, 1);
             check_change_status = true;
         } else {
             wr_object->u.request.bde[i].tus.f.bdeSize =
                 SLI4_PAGE_SIZE;
             written += SLI4_PAGE_SIZE;
         }
         i++;
     }
     wr_object->u.request.bde_count = i;
     bf_set(lpfc_wr_object_write_length, &wr_object->u.request, written);
     if (!phba->sli4_hba.intr_enable)
         rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
     else {
         mbox_tmo = lpfc_mbox_tmo_val(phba, mbox);
         rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
     }
     /* The IOCTL status is embedded in the mailbox subheader. */
     shdr_status = bf_get(lpfc_mbox_hdr_status,
                  &wr_object->header.cfg_shdr.response);
     shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
                  &wr_object->header.cfg_shdr.response);
     shdr_add_status_2 = bf_get(lpfc_mbox_hdr_add_status_2,
                    &wr_object->header.cfg_shdr.response);
     if (check_change_status) {
         shdr_change_status = bf_get(lpfc_wr_object_change_status,
                         &wr_object->u.response);
         shdr_csf = bf_get(lpfc_wr_object_csf,
                   &wr_object->u.response);
     }
 
     if (!phba->sli4_hba.intr_enable)
         mempool_free(mbox, phba->mbox_mem_pool);
     else if (rc != MBX_TIMEOUT)
         mempool_free(mbox, phba->mbox_mem_pool);
     if (shdr_status || shdr_add_status || shdr_add_status_2 || rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3025 Write Object mailbox failed with "
                 "status x%x add_status x%x, add_status_2 x%x, "
                 "mbx status x%x\n",
                 shdr_status, shdr_add_status, shdr_add_status_2,
                 rc);
         rc = -ENXIO;
         *offset = shdr_add_status;
     } else {
         *offset += wr_object->u.response.actual_write_length;
     }
 
     if (rc || check_change_status)
         lpfc_log_fw_write_cmpl(phba, shdr_status, shdr_add_status,
                        shdr_add_status_2, shdr_change_status,
                        shdr_csf);
     return rc;
 }
 
 /**
  * lpfc_cleanup_pending_mbox - Free up vport discovery mailbox commands.
  * @vport: pointer to vport data structure.
  *
  * This function iterate through the mailboxq and clean up all REG_LOGIN
  * and REG_VPI mailbox commands associated with the vport. This function
  * is called when driver want to restart discovery of the vport due to
  * a Clear Virtual Link event.
  **/
 void
 lpfc_cleanup_pending_mbox(struct lpfc_vport *vport)
 {
     struct lpfc_hba *phba = vport->phba;
     LPFC_MBOXQ_t *mb, *nextmb;
     struct lpfc_nodelist *ndlp;
     struct lpfc_nodelist *act_mbx_ndlp = NULL;
     LIST_HEAD(mbox_cmd_list);
     uint8_t restart_loop;
 
     /* Clean up internally queued mailbox commands with the vport */
     spin_lock_irq(&phba->hbalock);
     list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
         if (mb->vport != vport)
             continue;
 
         if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) &&
             (mb->u.mb.mbxCommand != MBX_REG_VPI))
             continue;
 
         list_move_tail(&mb->list, &mbox_cmd_list);
     }
     /* Clean up active mailbox command with the vport */
     mb = phba->sli.mbox_active;
     if (mb && (mb->vport == vport)) {
         if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) ||
             (mb->u.mb.mbxCommand == MBX_REG_VPI))
             mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
         if (mb->u.mb.mbxCommand == MBX_REG_LOGIN64) {
             act_mbx_ndlp = (struct lpfc_nodelist *)mb->ctx_ndlp;
 
             /* This reference is local to this routine.  The
              * reference is removed at routine exit.
              */
             act_mbx_ndlp = lpfc_nlp_get(act_mbx_ndlp);
 
             /* Unregister the RPI when mailbox complete */
             mb->mbox_flag |= LPFC_MBX_IMED_UNREG;
         }
     }
     /* Cleanup any mailbox completions which are not yet processed */
     do {
         restart_loop = 0;
         list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) {
             /*
              * If this mailox is already processed or it is
              * for another vport ignore it.
              */
             if ((mb->vport != vport) ||
                 (mb->mbox_flag & LPFC_MBX_IMED_UNREG))
                 continue;
 
             if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) &&
                 (mb->u.mb.mbxCommand != MBX_REG_VPI))
                 continue;
 
             mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
             if (mb->u.mb.mbxCommand == MBX_REG_LOGIN64) {
                 ndlp = (struct lpfc_nodelist *)mb->ctx_ndlp;
                 /* Unregister the RPI when mailbox complete */
                 mb->mbox_flag |= LPFC_MBX_IMED_UNREG;
                 restart_loop = 1;
                 spin_unlock_irq(&phba->hbalock);
                 spin_lock(&ndlp->lock);
                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
                 spin_unlock(&ndlp->lock);
                 spin_lock_irq(&phba->hbalock);
                 break;
             }
         }
     } while (restart_loop);
 
     spin_unlock_irq(&phba->hbalock);
 
     /* Release the cleaned-up mailbox commands */
     while (!list_empty(&mbox_cmd_list)) {
         list_remove_head(&mbox_cmd_list, mb, LPFC_MBOXQ_t, list);
         if (mb->u.mb.mbxCommand == MBX_REG_LOGIN64) {
             ndlp = (struct lpfc_nodelist *)mb->ctx_ndlp;
             mb->ctx_ndlp = NULL;
             if (ndlp) {
                 spin_lock(&ndlp->lock);
                 ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
                 spin_unlock(&ndlp->lock);
                 lpfc_nlp_put(ndlp);
             }
         }
         lpfc_mbox_rsrc_cleanup(phba, mb, MBOX_THD_UNLOCKED);
     }
 
     /* Release the ndlp with the cleaned-up active mailbox command */
     if (act_mbx_ndlp) {
         spin_lock(&act_mbx_ndlp->lock);
         act_mbx_ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL;
         spin_unlock(&act_mbx_ndlp->lock);
         lpfc_nlp_put(act_mbx_ndlp);
     }
 }
 
 /**
  * lpfc_drain_txq - Drain the txq
  * @phba: Pointer to HBA context object.
  *
  * This function attempt to submit IOCBs on the txq
  * to the adapter.  For SLI4 adapters, the txq contains
  * ELS IOCBs that have been deferred because the there
  * are no SGLs.  This congestion can occur with large
  * vport counts during node discovery.
  **/
 
 uint32_t
 lpfc_drain_txq(struct lpfc_hba *phba)
 {
     LIST_HEAD(completions);
     struct lpfc_sli_ring *pring;
     struct lpfc_iocbq *piocbq = NULL;
     unsigned long iflags = 0;
     char *fail_msg = NULL;
     uint32_t txq_cnt = 0;
     struct lpfc_queue *wq;
     int ret = 0;
 
     if (phba->link_flag & LS_MDS_LOOPBACK) {
         /* MDS WQE are posted only to first WQ*/
         wq = phba->sli4_hba.hdwq[0].io_wq;
         if (unlikely(!wq))
             return 0;
         pring = wq->pring;
     } else {
         wq = phba->sli4_hba.els_wq;
         if (unlikely(!wq))
             return 0;
         pring = lpfc_phba_elsring(phba);
     }
 
     if (unlikely(!pring) || list_empty(&pring->txq))
         return 0;
 
     spin_lock_irqsave(&pring->ring_lock, iflags);
     list_for_each_entry(piocbq, &pring->txq, list) {
         txq_cnt++;
     }
 
     if (txq_cnt > pring->txq_max)
         pring->txq_max = txq_cnt;
 
     spin_unlock_irqrestore(&pring->ring_lock, iflags);
 
     while (!list_empty(&pring->txq)) {
         spin_lock_irqsave(&pring->ring_lock, iflags);
 
         piocbq = lpfc_sli_ringtx_get(phba, pring);
         if (!piocbq) {
             spin_unlock_irqrestore(&pring->ring_lock, iflags);
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2823 txq empty and txq_cnt is %d\n ",
                 txq_cnt);
             break;
         }
         txq_cnt--;
 
         ret = __lpfc_sli_issue_iocb(phba, pring->ringno, piocbq, 0);
 
         if (ret && ret != IOCB_BUSY) {
             fail_msg = " - Cannot send IO ";
             piocbq->cmd_flag &= ~LPFC_DRIVER_ABORTED;
         }
         if (fail_msg) {
             piocbq->cmd_flag |= LPFC_DRIVER_ABORTED;
             /* Failed means we can't issue and need to cancel */
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2822 IOCB failed %s iotag 0x%x "
                     "xri 0x%x %d flg x%x\n",
                     fail_msg, piocbq->iotag,
                     piocbq->sli4_xritag, ret,
                     piocbq->cmd_flag);
             list_add_tail(&piocbq->list, &completions);
             fail_msg = NULL;
         }
         spin_unlock_irqrestore(&pring->ring_lock, iflags);
         if (txq_cnt == 0 || ret == IOCB_BUSY)
             break;
     }
     /* Cancel all the IOCBs that cannot be issued */
     lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
                   IOERR_SLI_ABORTED);
 
     return txq_cnt;
 }
 
 /**
  * lpfc_wqe_bpl2sgl - Convert the bpl/bde to a sgl.
  * @phba: Pointer to HBA context object.
  * @pwqeq: Pointer to command WQE.
  * @sglq: Pointer to the scatter gather queue object.
  *
  * This routine converts the bpl or bde that is in the WQE
  * to a sgl list for the sli4 hardware. The physical address
  * of the bpl/bde is converted back to a virtual address.
  * If the WQE contains a BPL then the list of BDE's is
  * converted to sli4_sge's. If the WQE contains a single
  * BDE then it is converted to a single sli_sge.
  * The WQE is still in cpu endianness so the contents of
  * the bpl can be used without byte swapping.
  *
  * Returns valid XRI = Success, NO_XRI = Failure.
  */
 static uint16_t
 lpfc_wqe_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeq,
          struct lpfc_sglq *sglq)
 {
     uint16_t xritag = NO_XRI;
     struct ulp_bde64 *bpl = NULL;
     struct ulp_bde64 bde;
     struct sli4_sge *sgl  = NULL;
     struct lpfc_dmabuf *dmabuf;
     union lpfc_wqe128 *wqe;
     int numBdes = 0;
     int i = 0;
     uint32_t offset = 0; /* accumulated offset in the sg request list */
     int inbound = 0; /* number of sg reply entries inbound from firmware */
     uint32_t cmd;
 
     if (!pwqeq || !sglq)
         return xritag;
 
     sgl  = (struct sli4_sge *)sglq->sgl;
     wqe = &pwqeq->wqe;
     pwqeq->iocb.ulpIoTag = pwqeq->iotag;
 
     cmd = bf_get(wqe_cmnd, &wqe->generic.wqe_com);
     if (cmd == CMD_XMIT_BLS_RSP64_WQE)
         return sglq->sli4_xritag;
     numBdes = pwqeq->num_bdes;
     if (numBdes) {
         /* The addrHigh and addrLow fields within the WQE
          * have not been byteswapped yet so there is no
          * need to swap them back.
          */
         if (pwqeq->bpl_dmabuf)
             dmabuf = pwqeq->bpl_dmabuf;
         else
             return xritag;
 
         bpl  = (struct ulp_bde64 *)dmabuf->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;
 
             sgl->word2 = le32_to_cpu(sgl->word2);
             if ((i+1) == numBdes)
                 bf_set(lpfc_sli4_sge_last, sgl, 1);
             else
                 bf_set(lpfc_sli4_sge_last, sgl, 0);
             /* 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);
             sgl->sge_len = cpu_to_le32(bde.tus.f.bdeSize);
             /* The offsets in the sgl need to be accumulated
              * separately for the request and reply lists.
              * The request is always first, the reply follows.
              */
             switch (cmd) {
             case CMD_GEN_REQUEST64_WQE:
                 /* add up the reply sg entries */
                 if (bpl->tus.f.bdeFlags == BUFF_TYPE_BDE_64I)
                     inbound++;
                 /* first inbound? reset the offset */
                 if (inbound == 1)
                     offset = 0;
                 bf_set(lpfc_sli4_sge_offset, sgl, offset);
                 bf_set(lpfc_sli4_sge_type, sgl,
                     LPFC_SGE_TYPE_DATA);
                 offset += bde.tus.f.bdeSize;
                 break;
             case CMD_FCP_TRSP64_WQE:
                 bf_set(lpfc_sli4_sge_offset, sgl, 0);
                 bf_set(lpfc_sli4_sge_type, sgl,
                     LPFC_SGE_TYPE_DATA);
                 break;
             case CMD_FCP_TSEND64_WQE:
             case CMD_FCP_TRECEIVE64_WQE:
                 bf_set(lpfc_sli4_sge_type, sgl,
                     bpl->tus.f.bdeFlags);
                 if (i < 3)
                     offset = 0;
                 else
                     offset += bde.tus.f.bdeSize;
                 bf_set(lpfc_sli4_sge_offset, sgl, offset);
                 break;
             }
             sgl->word2 = cpu_to_le32(sgl->word2);
             bpl++;
             sgl++;
         }
     } else if (wqe->gen_req.bde.tus.f.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(wqe->gen_req.bde.addrHigh);
         sgl->addr_lo = cpu_to_le32(wqe->gen_req.bde.addrLow);
         sgl->word2 = le32_to_cpu(sgl->word2);
         bf_set(lpfc_sli4_sge_last, sgl, 1);
         sgl->word2 = cpu_to_le32(sgl->word2);
         sgl->sge_len = cpu_to_le32(wqe->gen_req.bde.tus.f.bdeSize);
     }
     return sglq->sli4_xritag;
 }
 
 /**
  * lpfc_sli4_issue_wqe - Issue an SLI4 Work Queue Entry (WQE)
  * @phba: Pointer to HBA context object.
  * @qp: Pointer to HDW queue.
  * @pwqe: Pointer to command WQE.
  **/
 int
 lpfc_sli4_issue_wqe(struct lpfc_hba *phba, struct lpfc_sli4_hdw_queue *qp,
             struct lpfc_iocbq *pwqe)
 {
     union lpfc_wqe128 *wqe = &pwqe->wqe;
     struct lpfc_async_xchg_ctx *ctxp;
     struct lpfc_queue *wq;
     struct lpfc_sglq *sglq;
     struct lpfc_sli_ring *pring;
     unsigned long iflags;
     uint32_t ret = 0;
 
     /* NVME_LS and NVME_LS ABTS requests. */
     if (pwqe->cmd_flag & LPFC_IO_NVME_LS) {
         pring =  phba->sli4_hba.nvmels_wq->pring;
         lpfc_qp_spin_lock_irqsave(&pring->ring_lock, iflags,
                       qp, wq_access);
         sglq = __lpfc_sli_get_els_sglq(phba, pwqe);
         if (!sglq) {
             spin_unlock_irqrestore(&pring->ring_lock, iflags);
             return WQE_BUSY;
         }
         pwqe->sli4_lxritag = sglq->sli4_lxritag;
         pwqe->sli4_xritag = sglq->sli4_xritag;
         if (lpfc_wqe_bpl2sgl(phba, pwqe, sglq) == NO_XRI) {
             spin_unlock_irqrestore(&pring->ring_lock, iflags);
             return WQE_ERROR;
         }
         bf_set(wqe_xri_tag, &pwqe->wqe.xmit_bls_rsp.wqe_com,
                pwqe->sli4_xritag);
         ret = lpfc_sli4_wq_put(phba->sli4_hba.nvmels_wq, wqe);
         if (ret) {
             spin_unlock_irqrestore(&pring->ring_lock, iflags);
             return ret;
         }
 
         lpfc_sli_ringtxcmpl_put(phba, pring, pwqe);
         spin_unlock_irqrestore(&pring->ring_lock, iflags);
 
         lpfc_sli4_poll_eq(qp->hba_eq, LPFC_POLL_FASTPATH);
         return 0;
     }
 
     /* NVME_FCREQ and NVME_ABTS requests */
     if (pwqe->cmd_flag & (LPFC_IO_NVME | LPFC_IO_FCP | LPFC_IO_CMF)) {
         /* Get the IO distribution (hba_wqidx) for WQ assignment. */
         wq = qp->io_wq;
         pring = wq->pring;
 
         bf_set(wqe_cqid, &wqe->generic.wqe_com, qp->io_cq_map);
 
         lpfc_qp_spin_lock_irqsave(&pring->ring_lock, iflags,
                       qp, wq_access);
         ret = lpfc_sli4_wq_put(wq, wqe);
         if (ret) {
             spin_unlock_irqrestore(&pring->ring_lock, iflags);
             return ret;
         }
         lpfc_sli_ringtxcmpl_put(phba, pring, pwqe);
         spin_unlock_irqrestore(&pring->ring_lock, iflags);
 
         lpfc_sli4_poll_eq(qp->hba_eq, LPFC_POLL_FASTPATH);
         return 0;
     }
 
     /* NVMET requests */
     if (pwqe->cmd_flag & LPFC_IO_NVMET) {
         /* Get the IO distribution (hba_wqidx) for WQ assignment. */
         wq = qp->io_wq;
         pring = wq->pring;
 
         ctxp = pwqe->context_un.axchg;
         sglq = ctxp->ctxbuf->sglq;
         if (pwqe->sli4_xritag ==  NO_XRI) {
             pwqe->sli4_lxritag = sglq->sli4_lxritag;
             pwqe->sli4_xritag = sglq->sli4_xritag;
         }
         bf_set(wqe_xri_tag, &pwqe->wqe.xmit_bls_rsp.wqe_com,
                pwqe->sli4_xritag);
         bf_set(wqe_cqid, &wqe->generic.wqe_com, qp->io_cq_map);
 
         lpfc_qp_spin_lock_irqsave(&pring->ring_lock, iflags,
                       qp, wq_access);
         ret = lpfc_sli4_wq_put(wq, wqe);
         if (ret) {
             spin_unlock_irqrestore(&pring->ring_lock, iflags);
             return ret;
         }
         lpfc_sli_ringtxcmpl_put(phba, pring, pwqe);
         spin_unlock_irqrestore(&pring->ring_lock, iflags);
 
         lpfc_sli4_poll_eq(qp->hba_eq, LPFC_POLL_FASTPATH);
         return 0;
     }
     return WQE_ERROR;
 }
 
 /**
  * lpfc_sli4_issue_abort_iotag - SLI-4 WQE init & issue for the Abort
  * @phba: Pointer to HBA context object.
  * @cmdiocb: Pointer to driver command iocb object.
  * @cmpl: completion function.
  *
  * Fill the appropriate fields for the abort WQE and call
  * internal routine lpfc_sli4_issue_wqe to send the WQE
  * This function is called with hbalock held and no ring_lock held.
  *
  * RETURNS 0 - SUCCESS
  **/
 
 int
 lpfc_sli4_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
                 void *cmpl)
 {
     struct lpfc_vport *vport = cmdiocb->vport;
     struct lpfc_iocbq *abtsiocb = NULL;
     union lpfc_wqe128 *abtswqe;
     struct lpfc_io_buf *lpfc_cmd;
     int retval = IOCB_ERROR;
     u16 xritag = cmdiocb->sli4_xritag;
 
     /*
      * The scsi command can not be in txq and it is in flight because the
      * pCmd is still pointing at the SCSI command we have to abort. There
      * is no need to search the txcmplq. Just send an abort to the FW.
      */
 
     abtsiocb = __lpfc_sli_get_iocbq(phba);
     if (!abtsiocb)
         return WQE_NORESOURCE;
 
     /* Indicate the IO is being aborted by the driver. */
     cmdiocb->cmd_flag |= LPFC_DRIVER_ABORTED;
 
     abtswqe = &abtsiocb->wqe;
     memset(abtswqe, 0, sizeof(*abtswqe));
 
     if (!lpfc_is_link_up(phba) || (phba->link_flag & LS_EXTERNAL_LOOPBACK))
         bf_set(abort_cmd_ia, &abtswqe->abort_cmd, 1);
     bf_set(abort_cmd_criteria, &abtswqe->abort_cmd, T_XRI_TAG);
     abtswqe->abort_cmd.rsrvd5 = 0;
     abtswqe->abort_cmd.wqe_com.abort_tag = xritag;
     bf_set(wqe_reqtag, &abtswqe->abort_cmd.wqe_com, abtsiocb->iotag);
     bf_set(wqe_cmnd, &abtswqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX);
     bf_set(wqe_xri_tag, &abtswqe->generic.wqe_com, 0);
     bf_set(wqe_qosd, &abtswqe->abort_cmd.wqe_com, 1);
     bf_set(wqe_lenloc, &abtswqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE);
     bf_set(wqe_cmd_type, &abtswqe->abort_cmd.wqe_com, OTHER_COMMAND);
 
     /* ABTS WQE must go to the same WQ as the WQE to be aborted */
     abtsiocb->hba_wqidx = cmdiocb->hba_wqidx;
     abtsiocb->cmd_flag |= LPFC_USE_FCPWQIDX;
     if (cmdiocb->cmd_flag & LPFC_IO_FCP)
         abtsiocb->cmd_flag |= LPFC_IO_FCP;
     if (cmdiocb->cmd_flag & LPFC_IO_NVME)
         abtsiocb->cmd_flag |= LPFC_IO_NVME;
     if (cmdiocb->cmd_flag & LPFC_IO_FOF)
         abtsiocb->cmd_flag |= LPFC_IO_FOF;
     abtsiocb->vport = vport;
     abtsiocb->cmd_cmpl = cmpl;
 
     lpfc_cmd = container_of(cmdiocb, struct lpfc_io_buf, cur_iocbq);
     retval = lpfc_sli4_issue_wqe(phba, lpfc_cmd->hdwq, abtsiocb);
 
     lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI | LOG_NVME_ABTS | LOG_FCP,
              "0359 Abort xri x%x, original iotag x%x, "
              "abort cmd iotag x%x retval x%x\n",
              xritag, cmdiocb->iotag, abtsiocb->iotag, retval);
 
     if (retval) {
         cmdiocb->cmd_flag &= ~LPFC_DRIVER_ABORTED;
         __lpfc_sli_release_iocbq(phba, abtsiocb);
     }
 
     return retval;
 }
 
 #ifdef LPFC_MXP_STAT
 /**
  * lpfc_snapshot_mxp - Snapshot pbl, pvt and busy count
  * @phba: pointer to lpfc hba data structure.
  * @hwqid: belong to which HWQ.
  *
  * The purpose of this routine is to take a snapshot of pbl, pvt and busy count
  * 15 seconds after a test case is running.
  *
  * The user should call lpfc_debugfs_multixripools_write before running a test
  * case to clear stat_snapshot_taken. Then the user starts a test case. During
  * test case is running, stat_snapshot_taken is incremented by 1 every time when
  * this routine is called from heartbeat timer. When stat_snapshot_taken is
  * equal to LPFC_MXP_SNAPSHOT_TAKEN, a snapshot is taken.
  **/
 void lpfc_snapshot_mxp(struct lpfc_hba *phba, u32 hwqid)
 {
     struct lpfc_sli4_hdw_queue *qp;
     struct lpfc_multixri_pool *multixri_pool;
     struct lpfc_pvt_pool *pvt_pool;
     struct lpfc_pbl_pool *pbl_pool;
     u32 txcmplq_cnt;
 
     qp = &phba->sli4_hba.hdwq[hwqid];
     multixri_pool = qp->p_multixri_pool;
     if (!multixri_pool)
         return;
 
     if (multixri_pool->stat_snapshot_taken == LPFC_MXP_SNAPSHOT_TAKEN) {
         pvt_pool = &qp->p_multixri_pool->pvt_pool;
         pbl_pool = &qp->p_multixri_pool->pbl_pool;
         txcmplq_cnt = qp->io_wq->pring->txcmplq_cnt;
 
         multixri_pool->stat_pbl_count = pbl_pool->count;
         multixri_pool->stat_pvt_count = pvt_pool->count;
         multixri_pool->stat_busy_count = txcmplq_cnt;
     }
 
     multixri_pool->stat_snapshot_taken++;
 }
 #endif
 
 /**
  * lpfc_adjust_pvt_pool_count - Adjust private pool count
  * @phba: pointer to lpfc hba data structure.
  * @hwqid: belong to which HWQ.
  *
  * This routine moves some XRIs from private to public pool when private pool
  * is not busy.
  **/
 void lpfc_adjust_pvt_pool_count(struct lpfc_hba *phba, u32 hwqid)
 {
     struct lpfc_multixri_pool *multixri_pool;
     u32 io_req_count;
     u32 prev_io_req_count;
 
     multixri_pool = phba->sli4_hba.hdwq[hwqid].p_multixri_pool;
     if (!multixri_pool)
         return;
     io_req_count = multixri_pool->io_req_count;
     prev_io_req_count = multixri_pool->prev_io_req_count;
 
     if (prev_io_req_count != io_req_count) {
         /* Private pool is busy */
         multixri_pool->prev_io_req_count = io_req_count;
     } else {
         /* Private pool is not busy.
          * Move XRIs from private to public pool.
          */
         lpfc_move_xri_pvt_to_pbl(phba, hwqid);
     }
 }
 
 /**
  * lpfc_adjust_high_watermark - Adjust high watermark
  * @phba: pointer to lpfc hba data structure.
  * @hwqid: belong to which HWQ.
  *
  * This routine sets high watermark as number of outstanding XRIs,
  * but make sure the new value is between xri_limit/2 and xri_limit.
  **/
 void lpfc_adjust_high_watermark(struct lpfc_hba *phba, u32 hwqid)
 {
     u32 new_watermark;
     u32 watermark_max;
     u32 watermark_min;
     u32 xri_limit;
     u32 txcmplq_cnt;
     u32 abts_io_bufs;
     struct lpfc_multixri_pool *multixri_pool;
     struct lpfc_sli4_hdw_queue *qp;
 
     qp = &phba->sli4_hba.hdwq[hwqid];
     multixri_pool = qp->p_multixri_pool;
     if (!multixri_pool)
         return;
     xri_limit = multixri_pool->xri_limit;
 
     watermark_max = xri_limit;
     watermark_min = xri_limit / 2;
 
     txcmplq_cnt = qp->io_wq->pring->txcmplq_cnt;
     abts_io_bufs = qp->abts_scsi_io_bufs;
     abts_io_bufs += qp->abts_nvme_io_bufs;
 
     new_watermark = txcmplq_cnt + abts_io_bufs;
     new_watermark = min(watermark_max, new_watermark);
     new_watermark = max(watermark_min, new_watermark);
     multixri_pool->pvt_pool.high_watermark = new_watermark;
 
 #ifdef LPFC_MXP_STAT
     multixri_pool->stat_max_hwm = max(multixri_pool->stat_max_hwm,
                       new_watermark);
 #endif
 }
 
 /**
  * lpfc_move_xri_pvt_to_pbl - Move some XRIs from private to public pool
  * @phba: pointer to lpfc hba data structure.
  * @hwqid: belong to which HWQ.
  *
  * This routine is called from hearbeat timer when pvt_pool is idle.
  * All free XRIs are moved from private to public pool on hwqid with 2 steps.
  * The first step moves (all - low_watermark) amount of XRIs.
  * The second step moves the rest of XRIs.
  **/
 void lpfc_move_xri_pvt_to_pbl(struct lpfc_hba *phba, u32 hwqid)
 {
     struct lpfc_pbl_pool *pbl_pool;
     struct lpfc_pvt_pool *pvt_pool;
     struct lpfc_sli4_hdw_queue *qp;
     struct lpfc_io_buf *lpfc_ncmd;
     struct lpfc_io_buf *lpfc_ncmd_next;
     unsigned long iflag;
     struct list_head tmp_list;
     u32 tmp_count;
 
     qp = &phba->sli4_hba.hdwq[hwqid];
     pbl_pool = &qp->p_multixri_pool->pbl_pool;
     pvt_pool = &qp->p_multixri_pool->pvt_pool;
     tmp_count = 0;
 
     lpfc_qp_spin_lock_irqsave(&pbl_pool->lock, iflag, qp, mv_to_pub_pool);
     lpfc_qp_spin_lock(&pvt_pool->lock, qp, mv_from_pvt_pool);
 
     if (pvt_pool->count > pvt_pool->low_watermark) {
         /* Step 1: move (all - low_watermark) from pvt_pool
          * to pbl_pool
          */
 
         /* Move low watermark of bufs from pvt_pool to tmp_list */
         INIT_LIST_HEAD(&tmp_list);
         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
                      &pvt_pool->list, list) {
             list_move_tail(&lpfc_ncmd->list, &tmp_list);
             tmp_count++;
             if (tmp_count >= pvt_pool->low_watermark)
                 break;
         }
 
         /* Move all bufs from pvt_pool to pbl_pool */
         list_splice_init(&pvt_pool->list, &pbl_pool->list);
 
         /* Move all bufs from tmp_list to pvt_pool */
         list_splice(&tmp_list, &pvt_pool->list);
 
         pbl_pool->count += (pvt_pool->count - tmp_count);
         pvt_pool->count = tmp_count;
     } else {
         /* Step 2: move the rest from pvt_pool to pbl_pool */
         list_splice_init(&pvt_pool->list, &pbl_pool->list);
         pbl_pool->count += pvt_pool->count;
         pvt_pool->count = 0;
     }
 
     spin_unlock(&pvt_pool->lock);
     spin_unlock_irqrestore(&pbl_pool->lock, iflag);
 }
 
 /**
  * _lpfc_move_xri_pbl_to_pvt - Move some XRIs from public to private pool
  * @phba: pointer to lpfc hba data structure
  * @qp: pointer to HDW queue
  * @pbl_pool: specified public free XRI pool
  * @pvt_pool: specified private free XRI pool
  * @count: number of XRIs to move
  *
  * This routine tries to move some free common bufs from the specified pbl_pool
  * to the specified pvt_pool. It might move less than count XRIs if there's not
  * enough in public pool.
  *
  * Return:
  *   true - if XRIs are successfully moved from the specified pbl_pool to the
  *          specified pvt_pool
  *   false - if the specified pbl_pool is empty or locked by someone else
  **/
 static bool
 _lpfc_move_xri_pbl_to_pvt(struct lpfc_hba *phba, struct lpfc_sli4_hdw_queue *qp,
               struct lpfc_pbl_pool *pbl_pool,
               struct lpfc_pvt_pool *pvt_pool, u32 count)
 {
     struct lpfc_io_buf *lpfc_ncmd;
     struct lpfc_io_buf *lpfc_ncmd_next;
     unsigned long iflag;
     int ret;
 
     ret = spin_trylock_irqsave(&pbl_pool->lock, iflag);
     if (ret) {
         if (pbl_pool->count) {
             /* Move a batch of XRIs from public to private pool */
             lpfc_qp_spin_lock(&pvt_pool->lock, qp, mv_to_pvt_pool);
             list_for_each_entry_safe(lpfc_ncmd,
                          lpfc_ncmd_next,
                          &pbl_pool->list,
                          list) {
                 list_move_tail(&lpfc_ncmd->list,
                            &pvt_pool->list);
                 pvt_pool->count++;
                 pbl_pool->count--;
                 count--;
                 if (count == 0)
                     break;
             }
 
             spin_unlock(&pvt_pool->lock);
             spin_unlock_irqrestore(&pbl_pool->lock, iflag);
             return true;
         }
         spin_unlock_irqrestore(&pbl_pool->lock, iflag);
     }
 
     return false;
 }
 
 /**
  * lpfc_move_xri_pbl_to_pvt - Move some XRIs from public to private pool
  * @phba: pointer to lpfc hba data structure.
  * @hwqid: belong to which HWQ.
  * @count: number of XRIs to move
  *
  * This routine tries to find some free common bufs in one of public pools with
  * Round Robin method. The search always starts from local hwqid, then the next
  * HWQ which was found last time (rrb_next_hwqid). Once a public pool is found,
  * a batch of free common bufs are moved to private pool on hwqid.
  * It might move less than count XRIs if there's not enough in public pool.
  **/
 void lpfc_move_xri_pbl_to_pvt(struct lpfc_hba *phba, u32 hwqid, u32 count)
 {
     struct lpfc_multixri_pool *multixri_pool;
     struct lpfc_multixri_pool *next_multixri_pool;
     struct lpfc_pvt_pool *pvt_pool;
     struct lpfc_pbl_pool *pbl_pool;
     struct lpfc_sli4_hdw_queue *qp;
     u32 next_hwqid;
     u32 hwq_count;
     int ret;
 
     qp = &phba->sli4_hba.hdwq[hwqid];
     multixri_pool = qp->p_multixri_pool;
     pvt_pool = &multixri_pool->pvt_pool;
     pbl_pool = &multixri_pool->pbl_pool;
 
     /* Check if local pbl_pool is available */
     ret = _lpfc_move_xri_pbl_to_pvt(phba, qp, pbl_pool, pvt_pool, count);
     if (ret) {
 #ifdef LPFC_MXP_STAT
         multixri_pool->local_pbl_hit_count++;
 #endif
         return;
     }
 
     hwq_count = phba->cfg_hdw_queue;
 
     /* Get the next hwqid which was found last time */
     next_hwqid = multixri_pool->rrb_next_hwqid;
 
     do {
         /* Go to next hwq */
         next_hwqid = (next_hwqid + 1) % hwq_count;
 
         next_multixri_pool =
             phba->sli4_hba.hdwq[next_hwqid].p_multixri_pool;
         pbl_pool = &next_multixri_pool->pbl_pool;
 
         /* Check if the public free xri pool is available */
         ret = _lpfc_move_xri_pbl_to_pvt(
             phba, qp, pbl_pool, pvt_pool, count);
 
         /* Exit while-loop if success or all hwqid are checked */
     } while (!ret && next_hwqid != multixri_pool->rrb_next_hwqid);
 
     /* Starting point for the next time */
     multixri_pool->rrb_next_hwqid = next_hwqid;
 
     if (!ret) {
         /* stats: all public pools are empty*/
         multixri_pool->pbl_empty_count++;
     }
 
 #ifdef LPFC_MXP_STAT
     if (ret) {
         if (next_hwqid == hwqid)
             multixri_pool->local_pbl_hit_count++;
         else
             multixri_pool->other_pbl_hit_count++;
     }
 #endif
 }
 
 /**
  * lpfc_keep_pvt_pool_above_lowwm - Keep pvt_pool above low watermark
  * @phba: pointer to lpfc hba data structure.
  * @hwqid: belong to which HWQ.
  *
  * This routine get a batch of XRIs from pbl_pool if pvt_pool is less than
  * low watermark.
  **/
 void lpfc_keep_pvt_pool_above_lowwm(struct lpfc_hba *phba, u32 hwqid)
 {
     struct lpfc_multixri_pool *multixri_pool;
     struct lpfc_pvt_pool *pvt_pool;
 
     multixri_pool = phba->sli4_hba.hdwq[hwqid].p_multixri_pool;
     pvt_pool = &multixri_pool->pvt_pool;
 
     if (pvt_pool->count < pvt_pool->low_watermark)
         lpfc_move_xri_pbl_to_pvt(phba, hwqid, XRI_BATCH);
 }
 
 /**
  * lpfc_release_io_buf - Return one IO buf back to free pool
  * @phba: pointer to lpfc hba data structure.
  * @lpfc_ncmd: IO buf to be returned.
  * @qp: belong to which HWQ.
  *
  * This routine returns one IO buf back to free pool. If this is an urgent IO,
  * the IO buf is returned to expedite pool. If cfg_xri_rebalancing==1,
  * the IO buf is returned to pbl_pool or pvt_pool based on watermark and
  * xri_limit.  If cfg_xri_rebalancing==0, the IO buf is returned to
  * lpfc_io_buf_list_put.
  **/
 void lpfc_release_io_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_ncmd,
              struct lpfc_sli4_hdw_queue *qp)
 {
     unsigned long iflag;
     struct lpfc_pbl_pool *pbl_pool;
     struct lpfc_pvt_pool *pvt_pool;
     struct lpfc_epd_pool *epd_pool;
     u32 txcmplq_cnt;
     u32 xri_owned;
     u32 xri_limit;
     u32 abts_io_bufs;
 
     /* MUST zero fields if buffer is reused by another protocol */
     lpfc_ncmd->nvmeCmd = NULL;
     lpfc_ncmd->cur_iocbq.cmd_cmpl = NULL;
 
     if (phba->cfg_xpsgl && !phba->nvmet_support &&
         !list_empty(&lpfc_ncmd->dma_sgl_xtra_list))
         lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
 
     if (!list_empty(&lpfc_ncmd->dma_cmd_rsp_list))
         lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
 
     if (phba->cfg_xri_rebalancing) {
         if (lpfc_ncmd->expedite) {
             /* Return to expedite pool */
             epd_pool = &phba->epd_pool;
             spin_lock_irqsave(&epd_pool->lock, iflag);
             list_add_tail(&lpfc_ncmd->list, &epd_pool->list);
             epd_pool->count++;
             spin_unlock_irqrestore(&epd_pool->lock, iflag);
             return;
         }
 
         /* Avoid invalid access if an IO sneaks in and is being rejected
          * just _after_ xri pools are destroyed in lpfc_offline.
          * Nothing much can be done at this point.
          */
         if (!qp->p_multixri_pool)
             return;
 
         pbl_pool = &qp->p_multixri_pool->pbl_pool;
         pvt_pool = &qp->p_multixri_pool->pvt_pool;
 
         txcmplq_cnt = qp->io_wq->pring->txcmplq_cnt;
         abts_io_bufs = qp->abts_scsi_io_bufs;
         abts_io_bufs += qp->abts_nvme_io_bufs;
 
         xri_owned = pvt_pool->count + txcmplq_cnt + abts_io_bufs;
         xri_limit = qp->p_multixri_pool->xri_limit;
 
 #ifdef LPFC_MXP_STAT
         if (xri_owned <= xri_limit)
             qp->p_multixri_pool->below_limit_count++;
         else
             qp->p_multixri_pool->above_limit_count++;
 #endif
 
         /* XRI goes to either public or private free xri pool
          *     based on watermark and xri_limit
          */
         if ((pvt_pool->count < pvt_pool->low_watermark) ||
             (xri_owned < xri_limit &&
              pvt_pool->count < pvt_pool->high_watermark)) {
             lpfc_qp_spin_lock_irqsave(&pvt_pool->lock, iflag,
                           qp, free_pvt_pool);
             list_add_tail(&lpfc_ncmd->list,
                       &pvt_pool->list);
             pvt_pool->count++;
             spin_unlock_irqrestore(&pvt_pool->lock, iflag);
         } else {
             lpfc_qp_spin_lock_irqsave(&pbl_pool->lock, iflag,
                           qp, free_pub_pool);
             list_add_tail(&lpfc_ncmd->list,
                       &pbl_pool->list);
             pbl_pool->count++;
             spin_unlock_irqrestore(&pbl_pool->lock, iflag);
         }
     } else {
         lpfc_qp_spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag,
                       qp, free_xri);
         list_add_tail(&lpfc_ncmd->list,
                   &qp->lpfc_io_buf_list_put);
         qp->put_io_bufs++;
         spin_unlock_irqrestore(&qp->io_buf_list_put_lock,
                        iflag);
     }
 }
 
 /**
  * lpfc_get_io_buf_from_private_pool - Get one free IO buf from private pool
  * @phba: pointer to lpfc hba data structure.
  * @qp: pointer to HDW queue
  * @pvt_pool: pointer to private pool data structure.
  * @ndlp: pointer to lpfc nodelist data structure.
  *
  * This routine tries to get one free IO buf from private pool.
  *
  * Return:
  *   pointer to one free IO buf - if private pool is not empty
  *   NULL - if private pool is empty
  **/
 static struct lpfc_io_buf *
 lpfc_get_io_buf_from_private_pool(struct lpfc_hba *phba,
                   struct lpfc_sli4_hdw_queue *qp,
                   struct lpfc_pvt_pool *pvt_pool,
                   struct lpfc_nodelist *ndlp)
 {
     struct lpfc_io_buf *lpfc_ncmd;
     struct lpfc_io_buf *lpfc_ncmd_next;
     unsigned long iflag;
 
     lpfc_qp_spin_lock_irqsave(&pvt_pool->lock, iflag, qp, alloc_pvt_pool);
     list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
                  &pvt_pool->list, list) {
         if (lpfc_test_rrq_active(
             phba, ndlp, lpfc_ncmd->cur_iocbq.sli4_lxritag))
             continue;
         list_del(&lpfc_ncmd->list);
         pvt_pool->count--;
         spin_unlock_irqrestore(&pvt_pool->lock, iflag);
         return lpfc_ncmd;
     }
     spin_unlock_irqrestore(&pvt_pool->lock, iflag);
 
     return NULL;
 }
 
 /**
  * lpfc_get_io_buf_from_expedite_pool - Get one free IO buf from expedite pool
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine tries to get one free IO buf from expedite pool.
  *
  * Return:
  *   pointer to one free IO buf - if expedite pool is not empty
  *   NULL - if expedite pool is empty
  **/
 static struct lpfc_io_buf *
 lpfc_get_io_buf_from_expedite_pool(struct lpfc_hba *phba)
 {
     struct lpfc_io_buf *lpfc_ncmd;
     struct lpfc_io_buf *lpfc_ncmd_next;
     unsigned long iflag;
     struct lpfc_epd_pool *epd_pool;
 
     epd_pool = &phba->epd_pool;
     lpfc_ncmd = NULL;
 
     spin_lock_irqsave(&epd_pool->lock, iflag);
     if (epd_pool->count > 0) {
         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
                      &epd_pool->list, list) {
             list_del(&lpfc_ncmd->list);
             epd_pool->count--;
             break;
         }
     }
     spin_unlock_irqrestore(&epd_pool->lock, iflag);
 
     return lpfc_ncmd;
 }
 
 /**
  * lpfc_get_io_buf_from_multixri_pools - Get one free IO bufs
  * @phba: pointer to lpfc hba data structure.
  * @ndlp: pointer to lpfc nodelist data structure.
  * @hwqid: belong to which HWQ
  * @expedite: 1 means this request is urgent.
  *
  * This routine will do the following actions and then return a pointer to
  * one free IO buf.
  *
  * 1. If private free xri count is empty, move some XRIs from public to
  *    private pool.
  * 2. Get one XRI from private free xri pool.
  * 3. If we fail to get one from pvt_pool and this is an expedite request,
  *    get one free xri from expedite pool.
  *
  * Note: ndlp is only used on SCSI side for RRQ testing.
  *       The caller should pass NULL for ndlp on NVME side.
  *
  * Return:
  *   pointer to one free IO buf - if private pool is not empty
  *   NULL - if private pool is empty
  **/
 static struct lpfc_io_buf *
 lpfc_get_io_buf_from_multixri_pools(struct lpfc_hba *phba,
                     struct lpfc_nodelist *ndlp,
                     int hwqid, int expedite)
 {
     struct lpfc_sli4_hdw_queue *qp;
     struct lpfc_multixri_pool *multixri_pool;
     struct lpfc_pvt_pool *pvt_pool;
     struct lpfc_io_buf *lpfc_ncmd;
 
     qp = &phba->sli4_hba.hdwq[hwqid];
     lpfc_ncmd = NULL;
     if (!qp) {
         lpfc_printf_log(phba, KERN_INFO,
                 LOG_SLI | LOG_NVME_ABTS | LOG_FCP,
                 "5556 NULL qp for hwqid  x%x\n", hwqid);
         return lpfc_ncmd;
     }
     multixri_pool = qp->p_multixri_pool;
     if (!multixri_pool) {
         lpfc_printf_log(phba, KERN_INFO,
                 LOG_SLI | LOG_NVME_ABTS | LOG_FCP,
                 "5557 NULL multixri for hwqid  x%x\n", hwqid);
         return lpfc_ncmd;
     }
     pvt_pool = &multixri_pool->pvt_pool;
     if (!pvt_pool) {
         lpfc_printf_log(phba, KERN_INFO,
                 LOG_SLI | LOG_NVME_ABTS | LOG_FCP,
                 "5558 NULL pvt_pool for hwqid  x%x\n", hwqid);
         return lpfc_ncmd;
     }
     multixri_pool->io_req_count++;
 
     /* If pvt_pool is empty, move some XRIs from public to private pool */
     if (pvt_pool->count == 0)
         lpfc_move_xri_pbl_to_pvt(phba, hwqid, XRI_BATCH);
 
     /* Get one XRI from private free xri pool */
     lpfc_ncmd = lpfc_get_io_buf_from_private_pool(phba, qp, pvt_pool, ndlp);
 
     if (lpfc_ncmd) {
         lpfc_ncmd->hdwq = qp;
         lpfc_ncmd->hdwq_no = hwqid;
     } else if (expedite) {
         /* If we fail to get one from pvt_pool and this is an expedite
          * request, get one free xri from expedite pool.
          */
         lpfc_ncmd = lpfc_get_io_buf_from_expedite_pool(phba);
     }
 
     return lpfc_ncmd;
 }
 
 static inline struct lpfc_io_buf *
 lpfc_io_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, int idx)
 {
     struct lpfc_sli4_hdw_queue *qp;
     struct lpfc_io_buf *lpfc_cmd, *lpfc_cmd_next;
 
     qp = &phba->sli4_hba.hdwq[idx];
     list_for_each_entry_safe(lpfc_cmd, lpfc_cmd_next,
                  &qp->lpfc_io_buf_list_get, list) {
         if (lpfc_test_rrq_active(phba, ndlp,
                      lpfc_cmd->cur_iocbq.sli4_lxritag))
             continue;
 
         if (lpfc_cmd->flags & LPFC_SBUF_NOT_POSTED)
             continue;
 
         list_del_init(&lpfc_cmd->list);
         qp->get_io_bufs--;
         lpfc_cmd->hdwq = qp;
         lpfc_cmd->hdwq_no = idx;
         return lpfc_cmd;
     }
     return NULL;
 }
 
 /**
  * lpfc_get_io_buf - Get one IO buffer from free pool
  * @phba: The HBA for which this call is being executed.
  * @ndlp: pointer to lpfc nodelist data structure.
  * @hwqid: belong to which HWQ
  * @expedite: 1 means this request is urgent.
  *
  * This routine gets one IO buffer from free pool. If cfg_xri_rebalancing==1,
  * removes a IO buffer from multiXRI pools. If cfg_xri_rebalancing==0, removes
  * a IO buffer from head of @hdwq io_buf_list and returns to caller.
  *
  * Note: ndlp is only used on SCSI side for RRQ testing.
  *       The caller should pass NULL for ndlp on NVME side.
  *
  * Return codes:
  *   NULL - Error
  *   Pointer to lpfc_io_buf - Success
  **/
 struct lpfc_io_buf *lpfc_get_io_buf(struct lpfc_hba *phba,
                     struct lpfc_nodelist *ndlp,
                     u32 hwqid, int expedite)
 {
     struct lpfc_sli4_hdw_queue *qp;
     unsigned long iflag;
     struct lpfc_io_buf *lpfc_cmd;
 
     qp = &phba->sli4_hba.hdwq[hwqid];
     lpfc_cmd = NULL;
     if (!qp) {
         lpfc_printf_log(phba, KERN_WARNING,
                 LOG_SLI | LOG_NVME_ABTS | LOG_FCP,
                 "5555 NULL qp for hwqid  x%x\n", hwqid);
         return lpfc_cmd;
     }
 
     if (phba->cfg_xri_rebalancing)
         lpfc_cmd = lpfc_get_io_buf_from_multixri_pools(
             phba, ndlp, hwqid, expedite);
     else {
         lpfc_qp_spin_lock_irqsave(&qp->io_buf_list_get_lock, iflag,
                       qp, alloc_xri_get);
         if (qp->get_io_bufs > LPFC_NVME_EXPEDITE_XRICNT || expedite)
             lpfc_cmd = lpfc_io_buf(phba, ndlp, hwqid);
         if (!lpfc_cmd) {
             lpfc_qp_spin_lock(&qp->io_buf_list_put_lock,
                       qp, alloc_xri_put);
             list_splice(&qp->lpfc_io_buf_list_put,
                     &qp->lpfc_io_buf_list_get);
             qp->get_io_bufs += qp->put_io_bufs;
             INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
             qp->put_io_bufs = 0;
             spin_unlock(&qp->io_buf_list_put_lock);
             if (qp->get_io_bufs > LPFC_NVME_EXPEDITE_XRICNT ||
                 expedite)
                 lpfc_cmd = lpfc_io_buf(phba, ndlp, hwqid);
         }
         spin_unlock_irqrestore(&qp->io_buf_list_get_lock, iflag);
     }
 
     return lpfc_cmd;
 }
 
 /**
  * lpfc_read_object - Retrieve object data from HBA
  * @phba: The HBA for which this call is being executed.
  * @rdobject: Pathname of object data we want to read.
  * @datap: Pointer to where data will be copied to.
  * @datasz: size of data area
  *
  * This routine is limited to object sizes of LPFC_BPL_SIZE (1024) or less.
  * The data will be truncated if datasz is not large enough.
  * Version 1 is not supported with Embedded mbox cmd, so we must use version 0.
  * Returns the actual bytes read from the object.
  */
 int
 lpfc_read_object(struct lpfc_hba *phba, char *rdobject, uint32_t *datap,
          uint32_t datasz)
 {
     struct lpfc_mbx_read_object *read_object;
     LPFC_MBOXQ_t *mbox;
     int rc, length, eof, j, byte_cnt = 0;
     uint32_t shdr_status, shdr_add_status;
     union lpfc_sli4_cfg_shdr *shdr;
     struct lpfc_dmabuf *pcmd;
     u32 rd_object_name[LPFC_MBX_OBJECT_NAME_LEN_DW] = {0};
 
     /* sanity check on queue memory */
     if (!datap)
         return -ENODEV;
 
     mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mbox)
         return -ENOMEM;
     length = (sizeof(struct lpfc_mbx_read_object) -
           sizeof(struct lpfc_sli4_cfg_mhdr));
     lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
              LPFC_MBOX_OPCODE_READ_OBJECT,
              length, LPFC_SLI4_MBX_EMBED);
     read_object = &mbox->u.mqe.un.read_object;
     shdr = (union lpfc_sli4_cfg_shdr *)&read_object->header.cfg_shdr;
 
     bf_set(lpfc_mbox_hdr_version, &shdr->request, LPFC_Q_CREATE_VERSION_0);
     bf_set(lpfc_mbx_rd_object_rlen, &read_object->u.request, datasz);
     read_object->u.request.rd_object_offset = 0;
     read_object->u.request.rd_object_cnt = 1;
 
     memset((void *)read_object->u.request.rd_object_name, 0,
            LPFC_OBJ_NAME_SZ);
     scnprintf((char *)rd_object_name, sizeof(rd_object_name), rdobject);
     for (j = 0; j < strlen(rdobject); j++)
         read_object->u.request.rd_object_name[j] =
             cpu_to_le32(rd_object_name[j]);
 
     pcmd = kmalloc(sizeof(*pcmd), GFP_KERNEL);
     if (pcmd)
         pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
     if (!pcmd || !pcmd->virt) {
         kfree(pcmd);
         mempool_free(mbox, phba->mbox_mem_pool);
         return -ENOMEM;
     }
     memset((void *)pcmd->virt, 0, LPFC_BPL_SIZE);
     read_object->u.request.rd_object_hbuf[0].pa_lo =
         putPaddrLow(pcmd->phys);
     read_object->u.request.rd_object_hbuf[0].pa_hi =
         putPaddrHigh(pcmd->phys);
     read_object->u.request.rd_object_hbuf[0].length = LPFC_BPL_SIZE;
 
     mbox->vport = phba->pport;
     mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
     mbox->ctx_ndlp = NULL;
 
     rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
     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 == STATUS_FAILED &&
         shdr_add_status == ADD_STATUS_INVALID_OBJECT_NAME) {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_CGN_MGMT,
                 "4674 No port cfg file in FW.\n");
         byte_cnt = -ENOENT;
     } else if (shdr_status || shdr_add_status || rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_CGN_MGMT,
                 "2625 READ_OBJECT mailbox failed with "
                 "status x%x add_status x%x, mbx status x%x\n",
                 shdr_status, shdr_add_status, rc);
         byte_cnt = -ENXIO;
     } else {
         /* Success */
         length = read_object->u.response.rd_object_actual_rlen;
         eof = bf_get(lpfc_mbx_rd_object_eof, &read_object->u.response);
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_CGN_MGMT,
                 "2626 READ_OBJECT Success len %d:%d, EOF %d\n",
                 length, datasz, eof);
 
         /* Detect the port config file exists but is empty */
         if (!length && eof) {
             byte_cnt = 0;
             goto exit;
         }
 
         byte_cnt = length;
         lpfc_sli_pcimem_bcopy(pcmd->virt, datap, byte_cnt);
     }
 
  exit:
     /* This is an embedded SLI4 mailbox with an external buffer allocated.
      * Free the pcmd and then cleanup with the correct routine.
      */
     lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
     kfree(pcmd);
     lpfc_sli4_mbox_cmd_free(phba, mbox);
     return byte_cnt;
 }
 
 /**
  * lpfc_get_sgl_per_hdwq - Get one SGL chunk from hdwq's pool
  * @phba: The HBA for which this call is being executed.
  * @lpfc_buf: IO buf structure to append the SGL chunk
  *
  * This routine gets one SGL chunk buffer from hdwq's SGL chunk pool,
  * and will allocate an SGL chunk if the pool is empty.
  *
  * Return codes:
  *   NULL - Error
  *   Pointer to sli4_hybrid_sgl - Success
  **/
 struct sli4_hybrid_sgl *
 lpfc_get_sgl_per_hdwq(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_buf)
 {
     struct sli4_hybrid_sgl *list_entry = NULL;
     struct sli4_hybrid_sgl *tmp = NULL;
     struct sli4_hybrid_sgl *allocated_sgl = NULL;
     struct lpfc_sli4_hdw_queue *hdwq = lpfc_buf->hdwq;
     struct list_head *buf_list = &hdwq->sgl_list;
     unsigned long iflags;
 
     spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
 
     if (likely(!list_empty(buf_list))) {
         /* break off 1 chunk from the sgl_list */
         list_for_each_entry_safe(list_entry, tmp,
                      buf_list, list_node) {
             list_move_tail(&list_entry->list_node,
                        &lpfc_buf->dma_sgl_xtra_list);
             break;
         }
     } else {
         /* allocate more */
         spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
         tmp = kmalloc_node(sizeof(*tmp), GFP_ATOMIC,
                    cpu_to_node(hdwq->io_wq->chann));
         if (!tmp) {
             lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                     "8353 error kmalloc memory for HDWQ "
                     "%d %s\n",
                     lpfc_buf->hdwq_no, __func__);
             return NULL;
         }
 
         tmp->dma_sgl = dma_pool_alloc(phba->lpfc_sg_dma_buf_pool,
                           GFP_ATOMIC, &tmp->dma_phys_sgl);
         if (!tmp->dma_sgl) {
             lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                     "8354 error pool_alloc memory for HDWQ "
                     "%d %s\n",
                     lpfc_buf->hdwq_no, __func__);
             kfree(tmp);
             return NULL;
         }
 
         spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
         list_add_tail(&tmp->list_node, &lpfc_buf->dma_sgl_xtra_list);
     }
 
     allocated_sgl = list_last_entry(&lpfc_buf->dma_sgl_xtra_list,
                     struct sli4_hybrid_sgl,
                     list_node);
 
     spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
 
     return allocated_sgl;
 }
 
 /**
  * lpfc_put_sgl_per_hdwq - Put one SGL chunk into hdwq pool
  * @phba: The HBA for which this call is being executed.
  * @lpfc_buf: IO buf structure with the SGL chunk
  *
  * This routine puts one SGL chunk buffer into hdwq's SGL chunk pool.
  *
  * Return codes:
  *   0 - Success
  *   -EINVAL - Error
  **/
 int
 lpfc_put_sgl_per_hdwq(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_buf)
 {
     int rc = 0;
     struct sli4_hybrid_sgl *list_entry = NULL;
     struct sli4_hybrid_sgl *tmp = NULL;
     struct lpfc_sli4_hdw_queue *hdwq = lpfc_buf->hdwq;
     struct list_head *buf_list = &hdwq->sgl_list;
     unsigned long iflags;
 
     spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
 
     if (likely(!list_empty(&lpfc_buf->dma_sgl_xtra_list))) {
         list_for_each_entry_safe(list_entry, tmp,
                      &lpfc_buf->dma_sgl_xtra_list,
                      list_node) {
             list_move_tail(&list_entry->list_node,
                        buf_list);
         }
     } else {
         rc = -EINVAL;
     }
 
     spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
     return rc;
 }
 
 /**
  * lpfc_free_sgl_per_hdwq - Free all SGL chunks of hdwq pool
  * @phba: phba object
  * @hdwq: hdwq to cleanup sgl buff resources on
  *
  * This routine frees all SGL chunks of hdwq SGL chunk pool.
  *
  * Return codes:
  *   None
  **/
 void
 lpfc_free_sgl_per_hdwq(struct lpfc_hba *phba,
                struct lpfc_sli4_hdw_queue *hdwq)
 {
     struct list_head *buf_list = &hdwq->sgl_list;
     struct sli4_hybrid_sgl *list_entry = NULL;
     struct sli4_hybrid_sgl *tmp = NULL;
     unsigned long iflags;
 
     spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
 
     /* Free sgl pool */
     list_for_each_entry_safe(list_entry, tmp,
                  buf_list, list_node) {
         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
                   list_entry->dma_sgl,
                   list_entry->dma_phys_sgl);
         list_del(&list_entry->list_node);
         kfree(list_entry);
     }
 
     spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
 }
 
 /**
  * lpfc_get_cmd_rsp_buf_per_hdwq - Get one CMD/RSP buffer from hdwq
  * @phba: The HBA for which this call is being executed.
  * @lpfc_buf: IO buf structure to attach the CMD/RSP buffer
  *
  * This routine gets one CMD/RSP buffer from hdwq's CMD/RSP pool,
  * and will allocate an CMD/RSP buffer if the pool is empty.
  *
  * Return codes:
  *   NULL - Error
  *   Pointer to fcp_cmd_rsp_buf - Success
  **/
 struct fcp_cmd_rsp_buf *
 lpfc_get_cmd_rsp_buf_per_hdwq(struct lpfc_hba *phba,
                   struct lpfc_io_buf *lpfc_buf)
 {
     struct fcp_cmd_rsp_buf *list_entry = NULL;
     struct fcp_cmd_rsp_buf *tmp = NULL;
     struct fcp_cmd_rsp_buf *allocated_buf = NULL;
     struct lpfc_sli4_hdw_queue *hdwq = lpfc_buf->hdwq;
     struct list_head *buf_list = &hdwq->cmd_rsp_buf_list;
     unsigned long iflags;
 
     spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
 
     if (likely(!list_empty(buf_list))) {
         /* break off 1 chunk from the list */
         list_for_each_entry_safe(list_entry, tmp,
                      buf_list,
                      list_node) {
             list_move_tail(&list_entry->list_node,
                        &lpfc_buf->dma_cmd_rsp_list);
             break;
         }
     } else {
         /* allocate more */
         spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
         tmp = kmalloc_node(sizeof(*tmp), GFP_ATOMIC,
                    cpu_to_node(hdwq->io_wq->chann));
         if (!tmp) {
             lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                     "8355 error kmalloc memory for HDWQ "
                     "%d %s\n",
                     lpfc_buf->hdwq_no, __func__);
             return NULL;
         }
 
         tmp->fcp_cmnd = dma_pool_zalloc(phba->lpfc_cmd_rsp_buf_pool,
                         GFP_ATOMIC,
                         &tmp->fcp_cmd_rsp_dma_handle);
 
         if (!tmp->fcp_cmnd) {
             lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                     "8356 error pool_alloc memory for HDWQ "
                     "%d %s\n",
                     lpfc_buf->hdwq_no, __func__);
             kfree(tmp);
             return NULL;
         }
 
         tmp->fcp_rsp = (struct fcp_rsp *)((uint8_t *)tmp->fcp_cmnd +
                 sizeof(struct fcp_cmnd));
 
         spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
         list_add_tail(&tmp->list_node, &lpfc_buf->dma_cmd_rsp_list);
     }
 
     allocated_buf = list_last_entry(&lpfc_buf->dma_cmd_rsp_list,
                     struct fcp_cmd_rsp_buf,
                     list_node);
 
     spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
 
     return allocated_buf;
 }
 
 /**
  * lpfc_put_cmd_rsp_buf_per_hdwq - Put one CMD/RSP buffer into hdwq pool
  * @phba: The HBA for which this call is being executed.
  * @lpfc_buf: IO buf structure with the CMD/RSP buf
  *
  * This routine puts one CMD/RSP buffer into executing CPU's CMD/RSP pool.
  *
  * Return codes:
  *   0 - Success
  *   -EINVAL - Error
  **/
 int
 lpfc_put_cmd_rsp_buf_per_hdwq(struct lpfc_hba *phba,
                   struct lpfc_io_buf *lpfc_buf)
 {
     int rc = 0;
     struct fcp_cmd_rsp_buf *list_entry = NULL;
     struct fcp_cmd_rsp_buf *tmp = NULL;
     struct lpfc_sli4_hdw_queue *hdwq = lpfc_buf->hdwq;
     struct list_head *buf_list = &hdwq->cmd_rsp_buf_list;
     unsigned long iflags;
 
     spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
 
     if (likely(!list_empty(&lpfc_buf->dma_cmd_rsp_list))) {
         list_for_each_entry_safe(list_entry, tmp,
                      &lpfc_buf->dma_cmd_rsp_list,
                      list_node) {
             list_move_tail(&list_entry->list_node,
                        buf_list);
         }
     } else {
         rc = -EINVAL;
     }
 
     spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
     return rc;
 }
 
 /**
  * lpfc_free_cmd_rsp_buf_per_hdwq - Free all CMD/RSP chunks of hdwq pool
  * @phba: phba object
  * @hdwq: hdwq to cleanup cmd rsp buff resources on
  *
  * This routine frees all CMD/RSP buffers of hdwq's CMD/RSP buf pool.
  *
  * Return codes:
  *   None
  **/
 void
 lpfc_free_cmd_rsp_buf_per_hdwq(struct lpfc_hba *phba,
                    struct lpfc_sli4_hdw_queue *hdwq)
 {
     struct list_head *buf_list = &hdwq->cmd_rsp_buf_list;
     struct fcp_cmd_rsp_buf *list_entry = NULL;
     struct fcp_cmd_rsp_buf *tmp = NULL;
     unsigned long iflags;
 
     spin_lock_irqsave(&hdwq->hdwq_lock, iflags);
 
     /* Free cmd_rsp buf pool */
     list_for_each_entry_safe(list_entry, tmp,
                  buf_list,
                  list_node) {
         dma_pool_free(phba->lpfc_cmd_rsp_buf_pool,
                   list_entry->fcp_cmnd,
                   list_entry->fcp_cmd_rsp_dma_handle);
         list_del(&list_entry->list_node);
         kfree(list_entry);
     }
 
     spin_unlock_irqrestore(&hdwq->hdwq_lock, iflags);
 }
 
 /**
  * lpfc_sli_prep_wqe - Prepare WQE for the command to be posted
  * @phba: phba object
  * @job: job entry of the command to be posted.
  *
  * Fill the common fields of the wqe for each of the command.
  *
  * Return codes:
  *  None
  **/
 void
 lpfc_sli_prep_wqe(struct lpfc_hba *phba, struct lpfc_iocbq *job)
 {
     u8 cmnd;
     u32 *pcmd;
     u32 if_type = 0;
     u32 fip, abort_tag;
     struct lpfc_nodelist *ndlp = NULL;
     union lpfc_wqe128 *wqe = &job->wqe;
     u8 command_type = ELS_COMMAND_NON_FIP;
 
     fip = phba->hba_flag & HBA_FIP_SUPPORT;
     /* The fcp commands will set command type */
     if (job->cmd_flag &  LPFC_IO_FCP)
         command_type = FCP_COMMAND;
     else if (fip && (job->cmd_flag & LPFC_FIP_ELS_ID_MASK))
         command_type = ELS_COMMAND_FIP;
     else
         command_type = ELS_COMMAND_NON_FIP;
 
     abort_tag = job->iotag;
     cmnd = bf_get(wqe_cmnd, &wqe->els_req.wqe_com);
 
     switch (cmnd) {
     case CMD_ELS_REQUEST64_WQE:
         ndlp = job->ndlp;
 
         if_type = bf_get(lpfc_sli_intf_if_type,
                  &phba->sli4_hba.sli_intf);
         if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
             pcmd = (u32 *)job->cmd_dmabuf->virt;
             if (pcmd && (*pcmd == ELS_CMD_FLOGI ||
                      *pcmd == ELS_CMD_SCR ||
                      *pcmd == ELS_CMD_RDF ||
                      *pcmd == ELS_CMD_EDC ||
                      *pcmd == ELS_CMD_RSCN_XMT ||
                      *pcmd == ELS_CMD_FDISC ||
                      *pcmd == ELS_CMD_LOGO ||
                      *pcmd == ELS_CMD_QFPA ||
                      *pcmd == ELS_CMD_UVEM ||
                      *pcmd == ELS_CMD_PLOGI)) {
                 bf_set(els_req64_sp, &wqe->els_req, 1);
                 bf_set(els_req64_sid, &wqe->els_req,
                        job->vport->fc_myDID);
 
                 if ((*pcmd == ELS_CMD_FLOGI) &&
                     !(phba->fc_topology ==
                       LPFC_TOPOLOGY_LOOP))
                     bf_set(els_req64_sid, &wqe->els_req, 0);
 
                 bf_set(wqe_ct, &wqe->els_req.wqe_com, 1);
                 bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com,
                        phba->vpi_ids[job->vport->vpi]);
             } else if (pcmd) {
                 bf_set(wqe_ct, &wqe->els_req.wqe_com, 0);
                 bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com,
                        phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
             }
         }
 
         bf_set(wqe_temp_rpi, &wqe->els_req.wqe_com,
                phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
 
         bf_set(wqe_dbde, &wqe->els_req.wqe_com, 1);
         bf_set(wqe_iod, &wqe->els_req.wqe_com, LPFC_WQE_IOD_READ);
         bf_set(wqe_qosd, &wqe->els_req.wqe_com, 1);
         bf_set(wqe_lenloc, &wqe->els_req.wqe_com, LPFC_WQE_LENLOC_NONE);
         bf_set(wqe_ebde_cnt, &wqe->els_req.wqe_com, 0);
         break;
     case CMD_XMIT_ELS_RSP64_WQE:
         ndlp = job->ndlp;
 
         /* word4 */
         wqe->xmit_els_rsp.word4 = 0;
 
         if_type = bf_get(lpfc_sli_intf_if_type,
                  &phba->sli4_hba.sli_intf);
         if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
             if (job->vport->fc_flag & FC_PT2PT) {
                 bf_set(els_rsp64_sp, &wqe->xmit_els_rsp, 1);
                 bf_set(els_rsp64_sid, &wqe->xmit_els_rsp,
                        job->vport->fc_myDID);
                 if (job->vport->fc_myDID == Fabric_DID) {
                     bf_set(wqe_els_did,
                            &wqe->xmit_els_rsp.wqe_dest, 0);
                 }
             }
         }
 
         bf_set(wqe_dbde, &wqe->xmit_els_rsp.wqe_com, 1);
         bf_set(wqe_iod, &wqe->xmit_els_rsp.wqe_com, LPFC_WQE_IOD_WRITE);
         bf_set(wqe_qosd, &wqe->xmit_els_rsp.wqe_com, 1);
         bf_set(wqe_lenloc, &wqe->xmit_els_rsp.wqe_com,
                LPFC_WQE_LENLOC_WORD3);
         bf_set(wqe_ebde_cnt, &wqe->xmit_els_rsp.wqe_com, 0);
 
         if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
             bf_set(els_rsp64_sp, &wqe->xmit_els_rsp, 1);
             bf_set(els_rsp64_sid, &wqe->xmit_els_rsp,
                    job->vport->fc_myDID);
             bf_set(wqe_ct, &wqe->xmit_els_rsp.wqe_com, 1);
         }
 
         if (phba->sli_rev == LPFC_SLI_REV4) {
             bf_set(wqe_rsp_temp_rpi, &wqe->xmit_els_rsp,
                    phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
 
             if (bf_get(wqe_ct, &wqe->xmit_els_rsp.wqe_com))
                 bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
                        phba->vpi_ids[job->vport->vpi]);
         }
         command_type = OTHER_COMMAND;
         break;
     case CMD_GEN_REQUEST64_WQE:
         /* Word 10 */
         bf_set(wqe_dbde, &wqe->gen_req.wqe_com, 1);
         bf_set(wqe_iod, &wqe->gen_req.wqe_com, LPFC_WQE_IOD_READ);
         bf_set(wqe_qosd, &wqe->gen_req.wqe_com, 1);
         bf_set(wqe_lenloc, &wqe->gen_req.wqe_com, LPFC_WQE_LENLOC_NONE);
         bf_set(wqe_ebde_cnt, &wqe->gen_req.wqe_com, 0);
         command_type = OTHER_COMMAND;
         break;
     case CMD_XMIT_SEQUENCE64_WQE:
         if (phba->link_flag & LS_LOOPBACK_MODE)
             bf_set(wqe_xo, &wqe->xmit_sequence.wge_ctl, 1);
 
         wqe->xmit_sequence.rsvd3 = 0;
         bf_set(wqe_pu, &wqe->xmit_sequence.wqe_com, 0);
         bf_set(wqe_dbde, &wqe->xmit_sequence.wqe_com, 1);
         bf_set(wqe_iod, &wqe->xmit_sequence.wqe_com,
                LPFC_WQE_IOD_WRITE);
         bf_set(wqe_lenloc, &wqe->xmit_sequence.wqe_com,
                LPFC_WQE_LENLOC_WORD12);
         bf_set(wqe_ebde_cnt, &wqe->xmit_sequence.wqe_com, 0);
         command_type = OTHER_COMMAND;
         break;
     case CMD_XMIT_BLS_RSP64_WQE:
         bf_set(xmit_bls_rsp64_seqcnthi, &wqe->xmit_bls_rsp, 0xffff);
         bf_set(wqe_xmit_bls_pt, &wqe->xmit_bls_rsp.wqe_dest, 0x1);
         bf_set(wqe_ct, &wqe->xmit_bls_rsp.wqe_com, 1);
         bf_set(wqe_ctxt_tag, &wqe->xmit_bls_rsp.wqe_com,
                phba->vpi_ids[phba->pport->vpi]);
         bf_set(wqe_qosd, &wqe->xmit_bls_rsp.wqe_com, 1);
         bf_set(wqe_lenloc, &wqe->xmit_bls_rsp.wqe_com,
                LPFC_WQE_LENLOC_NONE);
         /* Overwrite the pre-set comnd type with OTHER_COMMAND */
         command_type = OTHER_COMMAND;
         break;
     case CMD_FCP_ICMND64_WQE:   /* task mgmt commands */
     case CMD_ABORT_XRI_WQE:     /* abort iotag */
     case CMD_SEND_FRAME:        /* mds loopback */
         /* cases already formatted for sli4 wqe - no chgs necessary */
         return;
     default:
         dump_stack();
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "6207 Invalid command 0x%x\n",
                 cmnd);
         break;
     }
 
     wqe->generic.wqe_com.abort_tag = abort_tag;
     bf_set(wqe_reqtag, &wqe->generic.wqe_com, job->iotag);
     bf_set(wqe_cmd_type, &wqe->generic.wqe_com, command_type);
     bf_set(wqe_cqid, &wqe->generic.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
 }