OSCL-LXR linux-6.0.1/​drivers/​scsi/​lpfc/​lpfc_init.c	Source navigation Diff markup Identifier search General search
	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/delay.h>
 #include <linux/dma-mapping.h>
 #include <linux/idr.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/kthread.h>
 #include <linux/pci.h>
 #include <linux/spinlock.h>
 #include <linux/ctype.h>
 #include <linux/aer.h>
 #include <linux/slab.h>
 #include <linux/firmware.h>
 #include <linux/miscdevice.h>
 #include <linux/percpu.h>
 #include <linux/msi.h>
 #include <linux/irq.h>
 #include <linux/bitops.h>
 #include <linux/crash_dump.h>
 #include <linux/cpu.h>
 #include <linux/cpuhotplug.h>
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_device.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_transport_fc.h>
 #include <scsi/scsi_tcq.h>
 #include <scsi/fc/fc_fs.h>
 
 #include "lpfc_hw4.h"
 #include "lpfc_hw.h"
 #include "lpfc_sli.h"
 #include "lpfc_sli4.h"
 #include "lpfc_nl.h"
 #include "lpfc_disc.h"
 #include "lpfc.h"
 #include "lpfc_scsi.h"
 #include "lpfc_nvme.h"
 #include "lpfc_logmsg.h"
 #include "lpfc_crtn.h"
 #include "lpfc_vport.h"
 #include "lpfc_version.h"
 #include "lpfc_ids.h"
 
 static enum cpuhp_state lpfc_cpuhp_state;
 /* Used when mapping IRQ vectors in a driver centric manner */
 static uint32_t lpfc_present_cpu;
 static bool lpfc_pldv_detect;
 
 static void __lpfc_cpuhp_remove(struct lpfc_hba *phba);
 static void lpfc_cpuhp_remove(struct lpfc_hba *phba);
 static void lpfc_cpuhp_add(struct lpfc_hba *phba);
 static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
 static int lpfc_post_rcv_buf(struct lpfc_hba *);
 static int lpfc_sli4_queue_verify(struct lpfc_hba *);
 static int lpfc_create_bootstrap_mbox(struct lpfc_hba *);
 static int lpfc_setup_endian_order(struct lpfc_hba *);
 static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *);
 static void lpfc_free_els_sgl_list(struct lpfc_hba *);
 static void lpfc_free_nvmet_sgl_list(struct lpfc_hba *);
 static void lpfc_init_sgl_list(struct lpfc_hba *);
 static int lpfc_init_active_sgl_array(struct lpfc_hba *);
 static void lpfc_free_active_sgl(struct lpfc_hba *);
 static int lpfc_hba_down_post_s3(struct lpfc_hba *phba);
 static int lpfc_hba_down_post_s4(struct lpfc_hba *phba);
 static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *);
 static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *);
 static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *);
 static void lpfc_sli4_disable_intr(struct lpfc_hba *);
 static uint32_t lpfc_sli4_enable_intr(struct lpfc_hba *, uint32_t);
 static void lpfc_sli4_oas_verify(struct lpfc_hba *phba);
 static uint16_t lpfc_find_cpu_handle(struct lpfc_hba *, uint16_t, int);
 static void lpfc_setup_bg(struct lpfc_hba *, struct Scsi_Host *);
 static int lpfc_sli4_cgn_parm_chg_evt(struct lpfc_hba *);
 static void lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba);
 
 static struct scsi_transport_template *lpfc_transport_template = NULL;
 static struct scsi_transport_template *lpfc_vport_transport_template = NULL;
 static DEFINE_IDR(lpfc_hba_index);
 #define LPFC_NVMET_BUF_POST 254
 static int lpfc_vmid_res_alloc(struct lpfc_hba *phba, struct lpfc_vport *vport);
 
 /**
  * lpfc_config_port_prep - Perform lpfc initialization prior to config port
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine will do LPFC initialization prior to issuing the CONFIG_PORT
  * mailbox command. It retrieves the revision information from the HBA and
  * collects the Vital Product Data (VPD) about the HBA for preparing the
  * configuration of the HBA.
  *
  * Return codes:
  *   0 - success.
  *   -ERESTART - requests the SLI layer to reset the HBA and try again.
  *   Any other value - indicates an error.
  **/
 int
 lpfc_config_port_prep(struct lpfc_hba *phba)
 {
     lpfc_vpd_t *vp = &phba->vpd;
     int i = 0, rc;
     LPFC_MBOXQ_t *pmb;
     MAILBOX_t *mb;
     char *lpfc_vpd_data = NULL;
     uint16_t offset = 0;
     static char licensed[56] =
             "key unlock for use with gnu public licensed code only\0";
     static int init_key = 1;
 
     pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!pmb) {
         phba->link_state = LPFC_HBA_ERROR;
         return -ENOMEM;
     }
 
     mb = &pmb->u.mb;
     phba->link_state = LPFC_INIT_MBX_CMDS;
 
     if (lpfc_is_LC_HBA(phba->pcidev->device)) {
         if (init_key) {
             uint32_t *ptext = (uint32_t *) licensed;
 
             for (i = 0; i < 56; i += sizeof (uint32_t), ptext++)
                 *ptext = cpu_to_be32(*ptext);
             init_key = 0;
         }
 
         lpfc_read_nv(phba, pmb);
         memset((char*)mb->un.varRDnvp.rsvd3, 0,
             sizeof (mb->un.varRDnvp.rsvd3));
         memcpy((char*)mb->un.varRDnvp.rsvd3, licensed,
              sizeof (licensed));
 
         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 
         if (rc != MBX_SUCCESS) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0324 Config Port initialization "
                     "error, mbxCmd x%x READ_NVPARM, "
                     "mbxStatus x%x\n",
                     mb->mbxCommand, mb->mbxStatus);
             mempool_free(pmb, phba->mbox_mem_pool);
             return -ERESTART;
         }
         memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename,
                sizeof(phba->wwnn));
         memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname,
                sizeof(phba->wwpn));
     }
 
     /*
      * Clear all option bits except LPFC_SLI3_BG_ENABLED,
      * which was already set in lpfc_get_cfgparam()
      */
     phba->sli3_options &= (uint32_t)LPFC_SLI3_BG_ENABLED;
 
     /* Setup and issue mailbox READ REV command */
     lpfc_read_rev(phba, pmb);
     rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
     if (rc != MBX_SUCCESS) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0439 Adapter failed to init, mbxCmd x%x "
                 "READ_REV, mbxStatus x%x\n",
                 mb->mbxCommand, mb->mbxStatus);
         mempool_free( pmb, phba->mbox_mem_pool);
         return -ERESTART;
     }
 
 
     /*
      * The value of rr must be 1 since the driver set the cv field to 1.
      * This setting requires the FW to set all revision fields.
      */
     if (mb->un.varRdRev.rr == 0) {
         vp->rev.rBit = 0;
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0440 Adapter failed to init, READ_REV has "
                 "missing revision information.\n");
         mempool_free(pmb, phba->mbox_mem_pool);
         return -ERESTART;
     }
 
     if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) {
         mempool_free(pmb, phba->mbox_mem_pool);
         return -EINVAL;
     }
 
     /* Save information as VPD data */
     vp->rev.rBit = 1;
     memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t));
     vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev;
     memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16);
     vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev;
     memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16);
     vp->rev.biuRev = mb->un.varRdRev.biuRev;
     vp->rev.smRev = mb->un.varRdRev.smRev;
     vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev;
     vp->rev.endecRev = mb->un.varRdRev.endecRev;
     vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh;
     vp->rev.fcphLow = mb->un.varRdRev.fcphLow;
     vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh;
     vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow;
     vp->rev.postKernRev = mb->un.varRdRev.postKernRev;
     vp->rev.opFwRev = mb->un.varRdRev.opFwRev;
 
     /* If the sli feature level is less then 9, we must
      * tear down all RPIs and VPIs on link down if NPIV
      * is enabled.
      */
     if (vp->rev.feaLevelHigh < 9)
         phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN;
 
     if (lpfc_is_LC_HBA(phba->pcidev->device))
         memcpy(phba->RandomData, (char *)&mb->un.varWords[24],
                         sizeof (phba->RandomData));
 
     /* Get adapter VPD information */
     lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);
     if (!lpfc_vpd_data)
         goto out_free_mbox;
     do {
         lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);
         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 
         if (rc != MBX_SUCCESS) {
             lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                     "0441 VPD not present on adapter, "
                     "mbxCmd x%x DUMP VPD, mbxStatus x%x\n",
                     mb->mbxCommand, mb->mbxStatus);
             mb->un.varDmp.word_cnt = 0;
         }
         /* dump mem may return a zero when finished or we got a
          * mailbox error, either way we are done.
          */
         if (mb->un.varDmp.word_cnt == 0)
             break;
 
         if (mb->un.varDmp.word_cnt > DMP_VPD_SIZE - offset)
             mb->un.varDmp.word_cnt = DMP_VPD_SIZE - offset;
         lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
                       lpfc_vpd_data + offset,
                       mb->un.varDmp.word_cnt);
         offset += mb->un.varDmp.word_cnt;
     } while (mb->un.varDmp.word_cnt && offset < DMP_VPD_SIZE);
 
     lpfc_parse_vpd(phba, lpfc_vpd_data, offset);
 
     kfree(lpfc_vpd_data);
 out_free_mbox:
     mempool_free(pmb, phba->mbox_mem_pool);
     return 0;
 }
 
 /**
  * lpfc_config_async_cmpl - Completion handler for config async event mbox cmd
  * @phba: pointer to lpfc hba data structure.
  * @pmboxq: pointer to the driver internal queue element for mailbox command.
  *
  * This is the completion handler for driver's configuring asynchronous event
  * mailbox command to the device. If the mailbox command returns successfully,
  * it will set internal async event support flag to 1; otherwise, it will
  * set internal async event support flag to 0.
  **/
 static void
 lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
 {
     if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS)
         phba->temp_sensor_support = 1;
     else
         phba->temp_sensor_support = 0;
     mempool_free(pmboxq, phba->mbox_mem_pool);
     return;
 }
 
 /**
  * lpfc_dump_wakeup_param_cmpl - dump memory mailbox command completion handler
  * @phba: pointer to lpfc hba data structure.
  * @pmboxq: pointer to the driver internal queue element for mailbox command.
  *
  * This is the completion handler for dump mailbox command for getting
  * wake up parameters. When this command complete, the response contain
  * Option rom version of the HBA. This function translate the version number
  * into a human readable string and store it in OptionROMVersion.
  **/
 static void
 lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
 {
     struct prog_id *prg;
     uint32_t prog_id_word;
     char dist = ' ';
     /* character array used for decoding dist type. */
     char dist_char[] = "nabx";
 
     if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) {
         mempool_free(pmboxq, phba->mbox_mem_pool);
         return;
     }
 
     prg = (struct prog_id *) &prog_id_word;
 
     /* word 7 contain option rom version */
     prog_id_word = pmboxq->u.mb.un.varWords[7];
 
     /* Decode the Option rom version word to a readable string */
     if (prg->dist < 4)
         dist = dist_char[prg->dist];
 
     if ((prg->dist == 3) && (prg->num == 0))
         snprintf(phba->OptionROMVersion, 32, "%d.%d%d",
             prg->ver, prg->rev, prg->lev);
     else
         snprintf(phba->OptionROMVersion, 32, "%d.%d%d%c%d",
             prg->ver, prg->rev, prg->lev,
             dist, prg->num);
     mempool_free(pmboxq, phba->mbox_mem_pool);
     return;
 }
 
 /**
  * lpfc_update_vport_wwn - Updates the fc_nodename, fc_portname,
  * @vport: pointer to lpfc vport data structure.
  *
  *
  * Return codes
  *   None.
  **/
 void
 lpfc_update_vport_wwn(struct lpfc_vport *vport)
 {
     struct lpfc_hba *phba = vport->phba;
 
     /*
      * If the name is empty or there exists a soft name
      * then copy the service params name, otherwise use the fc name
      */
     if (vport->fc_nodename.u.wwn[0] == 0)
         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
             sizeof(struct lpfc_name));
     else
         memcpy(&vport->fc_sparam.nodeName, &vport->fc_nodename,
             sizeof(struct lpfc_name));
 
     /*
      * If the port name has changed, then set the Param changes flag
      * to unreg the login
      */
     if (vport->fc_portname.u.wwn[0] != 0 &&
         memcmp(&vport->fc_portname, &vport->fc_sparam.portName,
                sizeof(struct lpfc_name))) {
         vport->vport_flag |= FAWWPN_PARAM_CHG;
 
         if (phba->sli_rev == LPFC_SLI_REV4 &&
             vport->port_type == LPFC_PHYSICAL_PORT &&
             phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_FABRIC) {
             if (!(phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG))
                 phba->sli4_hba.fawwpn_flag &=
                         ~LPFC_FAWWPN_FABRIC;
             lpfc_printf_log(phba, KERN_INFO,
                     LOG_SLI | LOG_DISCOVERY | LOG_ELS,
                     "2701 FA-PWWN change WWPN from %llx to "
                     "%llx: vflag x%x fawwpn_flag x%x\n",
                     wwn_to_u64(vport->fc_portname.u.wwn),
                     wwn_to_u64
                        (vport->fc_sparam.portName.u.wwn),
                     vport->vport_flag,
                     phba->sli4_hba.fawwpn_flag);
             memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
                    sizeof(struct lpfc_name));
         }
     }
 
     if (vport->fc_portname.u.wwn[0] == 0)
         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
                sizeof(struct lpfc_name));
     else
         memcpy(&vport->fc_sparam.portName, &vport->fc_portname,
                sizeof(struct lpfc_name));
 }
 
 /**
  * lpfc_config_port_post - Perform lpfc initialization after config port
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine will do LPFC initialization after the CONFIG_PORT mailbox
  * command call. It performs all internal resource and state setups on the
  * port: post IOCB buffers, enable appropriate host interrupt attentions,
  * ELS ring timers, etc.
  *
  * Return codes
  *   0 - success.
  *   Any other value - error.
  **/
 int
 lpfc_config_port_post(struct lpfc_hba *phba)
 {
     struct lpfc_vport *vport = phba->pport;
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     LPFC_MBOXQ_t *pmb;
     MAILBOX_t *mb;
     struct lpfc_dmabuf *mp;
     struct lpfc_sli *psli = &phba->sli;
     uint32_t status, timeout;
     int i, j;
     int rc;
 
     spin_lock_irq(&phba->hbalock);
     /*
      * If the Config port completed correctly the HBA is not
      * over heated any more.
      */
     if (phba->over_temp_state == HBA_OVER_TEMP)
         phba->over_temp_state = HBA_NORMAL_TEMP;
     spin_unlock_irq(&phba->hbalock);
 
     pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!pmb) {
         phba->link_state = LPFC_HBA_ERROR;
         return -ENOMEM;
     }
     mb = &pmb->u.mb;
 
     /* Get login parameters for NID.  */
     rc = lpfc_read_sparam(phba, pmb, 0);
     if (rc) {
         mempool_free(pmb, phba->mbox_mem_pool);
         return -ENOMEM;
     }
 
     pmb->vport = vport;
     if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0448 Adapter failed init, mbxCmd x%x "
                 "READ_SPARM mbxStatus x%x\n",
                 mb->mbxCommand, mb->mbxStatus);
         phba->link_state = LPFC_HBA_ERROR;
         lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
         return -EIO;
     }
 
     mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
 
     /* This dmabuf was allocated by lpfc_read_sparam. The dmabuf is no
      * longer needed.  Prevent unintended ctx_buf access as the mbox is
      * reused.
      */
     memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
     lpfc_mbuf_free(phba, mp->virt, mp->phys);
     kfree(mp);
     pmb->ctx_buf = NULL;
     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);
     fc_host_max_npiv_vports(shost) = phba->max_vpi;
 
     /* If no serial number in VPD data, use low 6 bytes of WWNN */
     /* This should be consolidated into parse_vpd ? - mr */
     if (phba->SerialNumber[0] == 0) {
         uint8_t *outptr;
 
         outptr = &vport->fc_nodename.u.s.IEEE[0];
         for (i = 0; i < 12; i++) {
             status = *outptr++;
             j = ((status & 0xf0) >> 4);
             if (j <= 9)
                 phba->SerialNumber[i] =
                     (char)((uint8_t) 0x30 + (uint8_t) j);
             else
                 phba->SerialNumber[i] =
                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
             i++;
             j = (status & 0xf);
             if (j <= 9)
                 phba->SerialNumber[i] =
                     (char)((uint8_t) 0x30 + (uint8_t) j);
             else
                 phba->SerialNumber[i] =
                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
         }
     }
 
     lpfc_read_config(phba, pmb);
     pmb->vport = vport;
     if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0453 Adapter failed to init, mbxCmd x%x "
                 "READ_CONFIG, mbxStatus x%x\n",
                 mb->mbxCommand, mb->mbxStatus);
         phba->link_state = LPFC_HBA_ERROR;
         mempool_free( pmb, phba->mbox_mem_pool);
         return -EIO;
     }
 
     /* Check if the port is disabled */
     lpfc_sli_read_link_ste(phba);
 
     /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
     if (phba->cfg_hba_queue_depth > mb->un.varRdConfig.max_xri) {
         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                 "3359 HBA queue depth changed from %d to %d\n",
                 phba->cfg_hba_queue_depth,
                 mb->un.varRdConfig.max_xri);
         phba->cfg_hba_queue_depth = mb->un.varRdConfig.max_xri;
     }
 
     phba->lmt = mb->un.varRdConfig.lmt;
 
     /* Get the default values for Model Name and Description */
     lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
 
     phba->link_state = LPFC_LINK_DOWN;
 
     /* Only process IOCBs on ELS ring till hba_state is READY */
     if (psli->sli3_ring[LPFC_EXTRA_RING].sli.sli3.cmdringaddr)
         psli->sli3_ring[LPFC_EXTRA_RING].flag |= LPFC_STOP_IOCB_EVENT;
     if (psli->sli3_ring[LPFC_FCP_RING].sli.sli3.cmdringaddr)
         psli->sli3_ring[LPFC_FCP_RING].flag |= LPFC_STOP_IOCB_EVENT;
 
     /* Post receive buffers for desired rings */
     if (phba->sli_rev != 3)
         lpfc_post_rcv_buf(phba);
 
     /*
      * Configure HBA MSI-X attention conditions to messages if MSI-X mode
      */
     if (phba->intr_type == MSIX) {
         rc = lpfc_config_msi(phba, pmb);
         if (rc) {
             mempool_free(pmb, phba->mbox_mem_pool);
             return -EIO;
         }
         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
         if (rc != MBX_SUCCESS) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0352 Config MSI mailbox command "
                     "failed, mbxCmd x%x, mbxStatus x%x\n",
                     pmb->u.mb.mbxCommand,
                     pmb->u.mb.mbxStatus);
             mempool_free(pmb, phba->mbox_mem_pool);
             return -EIO;
         }
     }
 
     spin_lock_irq(&phba->hbalock);
     /* Initialize ERATT handling flag */
     phba->hba_flag &= ~HBA_ERATT_HANDLED;
 
     /* Enable appropriate host interrupts */
     if (lpfc_readl(phba->HCregaddr, &status)) {
         spin_unlock_irq(&phba->hbalock);
         return -EIO;
     }
     status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
     if (psli->num_rings > 0)
         status |= HC_R0INT_ENA;
     if (psli->num_rings > 1)
         status |= HC_R1INT_ENA;
     if (psli->num_rings > 2)
         status |= HC_R2INT_ENA;
     if (psli->num_rings > 3)
         status |= HC_R3INT_ENA;
 
     if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) &&
         (phba->cfg_poll & DISABLE_FCP_RING_INT))
         status &= ~(HC_R0INT_ENA);
 
     writel(status, phba->HCregaddr);
     readl(phba->HCregaddr); /* flush */
     spin_unlock_irq(&phba->hbalock);
 
     /* Set up ring-0 (ELS) timer */
     timeout = phba->fc_ratov * 2;
     mod_timer(&vport->els_tmofunc,
           jiffies + msecs_to_jiffies(1000 * timeout));
     /* Set up heart beat (HB) 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;
     /* Set up error attention (ERATT) polling timer */
     mod_timer(&phba->eratt_poll,
           jiffies + msecs_to_jiffies(1000 * phba->eratt_poll_interval));
 
     if (phba->hba_flag & LINK_DISABLED) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2598 Adapter Link is disabled.\n");
         lpfc_down_link(phba, pmb);
         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
         if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2599 Adapter failed to issue DOWN_LINK"
                     " mbox command rc 0x%x\n", rc);
 
             mempool_free(pmb, phba->mbox_mem_pool);
             return -EIO;
         }
     } else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {
         mempool_free(pmb, phba->mbox_mem_pool);
         rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
         if (rc)
             return rc;
     }
     /* MBOX buffer will be freed in mbox compl */
     pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!pmb) {
         phba->link_state = LPFC_HBA_ERROR;
         return -ENOMEM;
     }
 
     lpfc_config_async(phba, pmb, LPFC_ELS_RING);
     pmb->mbox_cmpl = lpfc_config_async_cmpl;
     pmb->vport = phba->pport;
     rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 
     if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0456 Adapter failed to issue "
                 "ASYNCEVT_ENABLE mbox status x%x\n",
                 rc);
         mempool_free(pmb, phba->mbox_mem_pool);
     }
 
     /* Get Option rom version */
     pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!pmb) {
         phba->link_state = LPFC_HBA_ERROR;
         return -ENOMEM;
     }
 
     lpfc_dump_wakeup_param(phba, pmb);
     pmb->mbox_cmpl = lpfc_dump_wakeup_param_cmpl;
     pmb->vport = phba->pport;
     rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 
     if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0435 Adapter failed "
                 "to get Option ROM version status x%x\n", rc);
         mempool_free(pmb, phba->mbox_mem_pool);
     }
 
     return 0;
 }
 
 /**
  * lpfc_sli4_refresh_params - update driver copy of params.
  * @phba: Pointer to HBA context object.
  *
  * This is called to refresh driver copy of dynamic fields from the
  * common_get_sli4_parameters descriptor.
  **/
 int
 lpfc_sli4_refresh_params(struct lpfc_hba *phba)
 {
     LPFC_MBOXQ_t *mboxq;
     struct lpfc_mqe *mqe;
     struct lpfc_sli4_parameters *mbx_sli4_parameters;
     int length, rc;
 
     mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq)
         return -ENOMEM;
 
     mqe = &mboxq->u.mqe;
     /* Read the port's SLI4 Config Parameters */
     length = (sizeof(struct lpfc_mbx_get_sli4_parameters) -
           sizeof(struct lpfc_sli4_cfg_mhdr));
     lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
              LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS,
              length, LPFC_SLI4_MBX_EMBED);
 
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
     if (unlikely(rc)) {
         mempool_free(mboxq, phba->mbox_mem_pool);
         return rc;
     }
     mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;
 
     /* Are we forcing MI off via module parameter? */
     if (phba->cfg_enable_mi)
         phba->sli4_hba.pc_sli4_params.mi_ver =
             bf_get(cfg_mi_ver, mbx_sli4_parameters);
     else
         phba->sli4_hba.pc_sli4_params.mi_ver = 0;
 
     phba->sli4_hba.pc_sli4_params.cmf =
             bf_get(cfg_cmf, mbx_sli4_parameters);
     phba->sli4_hba.pc_sli4_params.pls =
             bf_get(cfg_pvl, mbx_sli4_parameters);
 
     mempool_free(mboxq, phba->mbox_mem_pool);
     return rc;
 }
 
 /**
  * lpfc_hba_init_link - Initialize the FC link
  * @phba: pointer to lpfc hba data structure.
  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
  *
  * This routine will issue the INIT_LINK mailbox command call.
  * It is available to other drivers through the lpfc_hba data
  * structure for use as a delayed link up mechanism with the
  * module parameter lpfc_suppress_link_up.
  *
  * Return code
  *      0 - success
  *      Any other value - error
  **/
 static int
 lpfc_hba_init_link(struct lpfc_hba *phba, uint32_t flag)
 {
     return lpfc_hba_init_link_fc_topology(phba, phba->cfg_topology, flag);
 }
 
 /**
  * lpfc_hba_init_link_fc_topology - Initialize FC link with desired topology
  * @phba: pointer to lpfc hba data structure.
  * @fc_topology: desired fc topology.
  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
  *
  * This routine will issue the INIT_LINK mailbox command call.
  * It is available to other drivers through the lpfc_hba data
  * structure for use as a delayed link up mechanism with the
  * module parameter lpfc_suppress_link_up.
  *
  * Return code
  *              0 - success
  *              Any other value - error
  **/
 int
 lpfc_hba_init_link_fc_topology(struct lpfc_hba *phba, uint32_t fc_topology,
                    uint32_t flag)
 {
     struct lpfc_vport *vport = phba->pport;
     LPFC_MBOXQ_t *pmb;
     MAILBOX_t *mb;
     int rc;
 
     pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!pmb) {
         phba->link_state = LPFC_HBA_ERROR;
         return -ENOMEM;
     }
     mb = &pmb->u.mb;
     pmb->vport = vport;
 
     if ((phba->cfg_link_speed > LPFC_USER_LINK_SPEED_MAX) ||
         ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_1G) &&
          !(phba->lmt & LMT_1Gb)) ||
         ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_2G) &&
          !(phba->lmt & LMT_2Gb)) ||
         ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_4G) &&
          !(phba->lmt & LMT_4Gb)) ||
         ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_8G) &&
          !(phba->lmt & LMT_8Gb)) ||
         ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_10G) &&
          !(phba->lmt & LMT_10Gb)) ||
         ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G) &&
          !(phba->lmt & LMT_16Gb)) ||
         ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_32G) &&
          !(phba->lmt & LMT_32Gb)) ||
         ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_64G) &&
          !(phba->lmt & LMT_64Gb))) {
         /* Reset link speed to auto */
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "1302 Invalid speed for this board:%d "
                 "Reset link speed to auto.\n",
                 phba->cfg_link_speed);
             phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
     }
     lpfc_init_link(phba, pmb, fc_topology, phba->cfg_link_speed);
     pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
     if (phba->sli_rev < LPFC_SLI_REV4)
         lpfc_set_loopback_flag(phba);
     rc = lpfc_sli_issue_mbox(phba, pmb, flag);
     if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0498 Adapter failed to init, mbxCmd x%x "
                 "INIT_LINK, mbxStatus x%x\n",
                 mb->mbxCommand, mb->mbxStatus);
         if (phba->sli_rev <= LPFC_SLI_REV3) {
             /* Clear all interrupt enable conditions */
             writel(0, phba->HCregaddr);
             readl(phba->HCregaddr); /* flush */
             /* Clear all pending interrupts */
             writel(0xffffffff, phba->HAregaddr);
             readl(phba->HAregaddr); /* flush */
         }
         phba->link_state = LPFC_HBA_ERROR;
         if (rc != MBX_BUSY || flag == MBX_POLL)
             mempool_free(pmb, phba->mbox_mem_pool);
         return -EIO;
     }
     phba->cfg_suppress_link_up = LPFC_INITIALIZE_LINK;
     if (flag == MBX_POLL)
         mempool_free(pmb, phba->mbox_mem_pool);
 
     return 0;
 }
 
 /**
  * lpfc_hba_down_link - this routine downs the FC link
  * @phba: pointer to lpfc hba data structure.
  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
  *
  * This routine will issue the DOWN_LINK mailbox command call.
  * It is available to other drivers through the lpfc_hba data
  * structure for use to stop the link.
  *
  * Return code
  *      0 - success
  *      Any other value - error
  **/
 static int
 lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag)
 {
     LPFC_MBOXQ_t *pmb;
     int rc;
 
     pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!pmb) {
         phba->link_state = LPFC_HBA_ERROR;
         return -ENOMEM;
     }
 
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "0491 Adapter Link is disabled.\n");
     lpfc_down_link(phba, pmb);
     pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
     rc = lpfc_sli_issue_mbox(phba, pmb, flag);
     if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2522 Adapter failed to issue DOWN_LINK"
                 " mbox command rc 0x%x\n", rc);
 
         mempool_free(pmb, phba->mbox_mem_pool);
         return -EIO;
     }
     if (flag == MBX_POLL)
         mempool_free(pmb, phba->mbox_mem_pool);
 
     return 0;
 }
 
 /**
  * lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset
  * @phba: pointer to lpfc HBA data structure.
  *
  * This routine will do LPFC uninitialization before the HBA is reset when
  * bringing down the SLI Layer.
  *
  * Return codes
  *   0 - success.
  *   Any other value - error.
  **/
 int
 lpfc_hba_down_prep(struct lpfc_hba *phba)
 {
     struct lpfc_vport **vports;
     int i;
 
     if (phba->sli_rev <= LPFC_SLI_REV3) {
         /* Disable interrupts */
         writel(0, phba->HCregaddr);
         readl(phba->HCregaddr); /* flush */
     }
 
     if (phba->pport->load_flag & FC_UNLOADING)
         lpfc_cleanup_discovery_resources(phba->pport);
     else {
         vports = lpfc_create_vport_work_array(phba);
         if (vports != NULL)
             for (i = 0; i <= phba->max_vports &&
                 vports[i] != NULL; i++)
                 lpfc_cleanup_discovery_resources(vports[i]);
         lpfc_destroy_vport_work_array(phba, vports);
     }
     return 0;
 }
 
 /**
  * lpfc_sli4_free_sp_events - Cleanup sp_queue_events to free
  * rspiocb which got deferred
  *
  * @phba: pointer to lpfc HBA data structure.
  *
  * This routine will cleanup completed slow path events after HBA is reset
  * when bringing down the SLI Layer.
  *
  *
  * Return codes
  *   void.
  **/
 static void
 lpfc_sli4_free_sp_events(struct lpfc_hba *phba)
 {
     struct lpfc_iocbq *rspiocbq;
     struct hbq_dmabuf *dmabuf;
     struct lpfc_cq_event *cq_event;
 
     spin_lock_irq(&phba->hbalock);
     phba->hba_flag &= ~HBA_SP_QUEUE_EVT;
     spin_unlock_irq(&phba->hbalock);
 
     while (!list_empty(&phba->sli4_hba.sp_queue_event)) {
         /* Get the response iocb from the head of work queue */
         spin_lock_irq(&phba->hbalock);
         list_remove_head(&phba->sli4_hba.sp_queue_event,
                  cq_event, struct lpfc_cq_event, list);
         spin_unlock_irq(&phba->hbalock);
 
         switch (bf_get(lpfc_wcqe_c_code, &cq_event->cqe.wcqe_cmpl)) {
         case CQE_CODE_COMPL_WQE:
             rspiocbq = container_of(cq_event, struct lpfc_iocbq,
                          cq_event);
             lpfc_sli_release_iocbq(phba, rspiocbq);
             break;
         case CQE_CODE_RECEIVE:
         case CQE_CODE_RECEIVE_V1:
             dmabuf = container_of(cq_event, struct hbq_dmabuf,
                           cq_event);
             lpfc_in_buf_free(phba, &dmabuf->dbuf);
         }
     }
 }
 
 /**
  * lpfc_hba_free_post_buf - Perform lpfc uninitialization after HBA reset
  * @phba: pointer to lpfc HBA data structure.
  *
  * This routine will cleanup posted ELS buffers after the HBA is reset
  * when bringing down the SLI Layer.
  *
  *
  * Return codes
  *   void.
  **/
 static void
 lpfc_hba_free_post_buf(struct lpfc_hba *phba)
 {
     struct lpfc_sli *psli = &phba->sli;
     struct lpfc_sli_ring *pring;
     struct lpfc_dmabuf *mp, *next_mp;
     LIST_HEAD(buflist);
     int count;
 
     if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
         lpfc_sli_hbqbuf_free_all(phba);
     else {
         /* Cleanup preposted buffers on the ELS ring */
         pring = &psli->sli3_ring[LPFC_ELS_RING];
         spin_lock_irq(&phba->hbalock);
         list_splice_init(&pring->postbufq, &buflist);
         spin_unlock_irq(&phba->hbalock);
 
         count = 0;
         list_for_each_entry_safe(mp, next_mp, &buflist, list) {
             list_del(&mp->list);
             count++;
             lpfc_mbuf_free(phba, mp->virt, mp->phys);
             kfree(mp);
         }
 
         spin_lock_irq(&phba->hbalock);
         pring->postbufq_cnt -= count;
         spin_unlock_irq(&phba->hbalock);
     }
 }
 
 /**
  * lpfc_hba_clean_txcmplq - Perform lpfc uninitialization after HBA reset
  * @phba: pointer to lpfc HBA data structure.
  *
  * This routine will cleanup the txcmplq after the HBA is reset when bringing
  * down the SLI Layer.
  *
  * Return codes
  *   void
  **/
 static void
 lpfc_hba_clean_txcmplq(struct lpfc_hba *phba)
 {
     struct lpfc_sli *psli = &phba->sli;
     struct lpfc_queue *qp = NULL;
     struct lpfc_sli_ring *pring;
     LIST_HEAD(completions);
     int i;
     struct lpfc_iocbq *piocb, *next_iocb;
 
     if (phba->sli_rev != LPFC_SLI_REV4) {
         for (i = 0; i < psli->num_rings; i++) {
             pring = &psli->sli3_ring[i];
             spin_lock_irq(&phba->hbalock);
             /* At this point in time the HBA is either reset or DOA
              * Nothing should be on txcmplq as it will
              * NEVER complete.
              */
             list_splice_init(&pring->txcmplq, &completions);
             pring->txcmplq_cnt = 0;
             spin_unlock_irq(&phba->hbalock);
 
             lpfc_sli_abort_iocb_ring(phba, pring);
         }
         /* Cancel all the IOCBs from the completions list */
         lpfc_sli_cancel_iocbs(phba, &completions,
                       IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
         return;
     }
     list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
         pring = qp->pring;
         if (!pring)
             continue;
         spin_lock_irq(&pring->ring_lock);
         list_for_each_entry_safe(piocb, next_iocb,
                      &pring->txcmplq, list)
             piocb->cmd_flag &= ~LPFC_IO_ON_TXCMPLQ;
         list_splice_init(&pring->txcmplq, &completions);
         pring->txcmplq_cnt = 0;
         spin_unlock_irq(&pring->ring_lock);
         lpfc_sli_abort_iocb_ring(phba, pring);
     }
     /* Cancel all the IOCBs from the completions list */
     lpfc_sli_cancel_iocbs(phba, &completions,
                   IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
 }
 
 /**
  * lpfc_hba_down_post_s3 - Perform lpfc uninitialization after HBA reset
  * @phba: pointer to lpfc HBA data structure.
  *
  * This routine will do uninitialization after the HBA is reset when bring
  * down the SLI Layer.
  *
  * Return codes
  *   0 - success.
  *   Any other value - error.
  **/
 static int
 lpfc_hba_down_post_s3(struct lpfc_hba *phba)
 {
     lpfc_hba_free_post_buf(phba);
     lpfc_hba_clean_txcmplq(phba);
     return 0;
 }
 
 /**
  * lpfc_hba_down_post_s4 - Perform lpfc uninitialization after HBA reset
  * @phba: pointer to lpfc HBA data structure.
  *
  * This routine will do uninitialization after the HBA is reset when bring
  * down the SLI Layer.
  *
  * Return codes
  *   0 - success.
  *   Any other value - error.
  **/
 static int
 lpfc_hba_down_post_s4(struct lpfc_hba *phba)
 {
     struct lpfc_io_buf *psb, *psb_next;
     struct lpfc_async_xchg_ctx *ctxp, *ctxp_next;
     struct lpfc_sli4_hdw_queue *qp;
     LIST_HEAD(aborts);
     LIST_HEAD(nvme_aborts);
     LIST_HEAD(nvmet_aborts);
     struct lpfc_sglq *sglq_entry = NULL;
     int cnt, idx;
 
 
     lpfc_sli_hbqbuf_free_all(phba);
     lpfc_hba_clean_txcmplq(phba);
 
     /* At this point in time the HBA is either reset or DOA. Either
      * way, nothing should be on lpfc_abts_els_sgl_list, it needs to be
      * on the lpfc_els_sgl_list so that it can either be freed if the
      * driver is unloading or reposted if the driver is restarting
      * the port.
      */
 
     /* sgl_list_lock required because worker thread uses this
      * list.
      */
     spin_lock_irq(&phba->sli4_hba.sgl_list_lock);
     list_for_each_entry(sglq_entry,
         &phba->sli4_hba.lpfc_abts_els_sgl_list, list)
         sglq_entry->state = SGL_FREED;
 
     list_splice_init(&phba->sli4_hba.lpfc_abts_els_sgl_list,
             &phba->sli4_hba.lpfc_els_sgl_list);
 
 
     spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
 
     /* abts_xxxx_buf_list_lock required because worker thread uses this
      * list.
      */
     spin_lock_irq(&phba->hbalock);
     cnt = 0;
     for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
         qp = &phba->sli4_hba.hdwq[idx];
 
         spin_lock(&qp->abts_io_buf_list_lock);
         list_splice_init(&qp->lpfc_abts_io_buf_list,
                  &aborts);
 
         list_for_each_entry_safe(psb, psb_next, &aborts, list) {
             psb->pCmd = NULL;
             psb->status = IOSTAT_SUCCESS;
             cnt++;
         }
         spin_lock(&qp->io_buf_list_put_lock);
         list_splice_init(&aborts, &qp->lpfc_io_buf_list_put);
         qp->put_io_bufs += qp->abts_scsi_io_bufs;
         qp->put_io_bufs += qp->abts_nvme_io_bufs;
         qp->abts_scsi_io_bufs = 0;
         qp->abts_nvme_io_bufs = 0;
         spin_unlock(&qp->io_buf_list_put_lock);
         spin_unlock(&qp->abts_io_buf_list_lock);
     }
     spin_unlock_irq(&phba->hbalock);
 
     if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
         spin_lock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);
         list_splice_init(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
                  &nvmet_aborts);
         spin_unlock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);
         list_for_each_entry_safe(ctxp, ctxp_next, &nvmet_aborts, list) {
             ctxp->flag &= ~(LPFC_NVME_XBUSY | LPFC_NVME_ABORT_OP);
             lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
         }
     }
 
     lpfc_sli4_free_sp_events(phba);
     return cnt;
 }
 
 /**
  * lpfc_hba_down_post - Wrapper func for hba down post routine
  * @phba: pointer to lpfc HBA data structure.
  *
  * This routine wraps the actual SLI3 or SLI4 routine for performing
  * uninitialization after the HBA is reset when bring down the SLI Layer.
  *
  * Return codes
  *   0 - success.
  *   Any other value - error.
  **/
 int
 lpfc_hba_down_post(struct lpfc_hba *phba)
 {
     return (*phba->lpfc_hba_down_post)(phba);
 }
 
 /**
  * lpfc_hb_timeout - The HBA-timer timeout handler
  * @t: timer context used to obtain the pointer to lpfc hba data structure.
  *
  * This is the HBA-timer timeout handler registered to the lpfc driver. When
  * this timer fires, a HBA timeout event shall be posted to the lpfc driver
  * work-port-events bitmap and the worker thread is notified. This timeout
  * event will be used by the worker thread to invoke the actual timeout
  * handler routine, lpfc_hb_timeout_handler. Any periodical operations will
  * be performed in the timeout handler and the HBA timeout event bit shall
  * be cleared by the worker thread after it has taken the event bitmap out.
  **/
 static void
 lpfc_hb_timeout(struct timer_list *t)
 {
     struct lpfc_hba *phba;
     uint32_t tmo_posted;
     unsigned long iflag;
 
     phba = from_timer(phba, t, hb_tmofunc);
 
     /* Check for heart beat timeout conditions */
     spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
     tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO;
     if (!tmo_posted)
         phba->pport->work_port_events |= WORKER_HB_TMO;
     spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
 
     /* Tell the worker thread there is work to do */
     if (!tmo_posted)
         lpfc_worker_wake_up(phba);
     return;
 }
 
 /**
  * lpfc_rrq_timeout - The RRQ-timer timeout handler
  * @t: timer context used to obtain the pointer to lpfc hba data structure.
  *
  * This is the RRQ-timer timeout handler registered to the lpfc driver. When
  * this timer fires, a RRQ timeout event shall be posted to the lpfc driver
  * work-port-events bitmap and the worker thread is notified. This timeout
  * event will be used by the worker thread to invoke the actual timeout
  * handler routine, lpfc_rrq_handler. Any periodical operations will
  * be performed in the timeout handler and the RRQ timeout event bit shall
  * be cleared by the worker thread after it has taken the event bitmap out.
  **/
 static void
 lpfc_rrq_timeout(struct timer_list *t)
 {
     struct lpfc_hba *phba;
     unsigned long iflag;
 
     phba = from_timer(phba, t, rrq_tmr);
     spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
     if (!(phba->pport->load_flag & FC_UNLOADING))
         phba->hba_flag |= HBA_RRQ_ACTIVE;
     else
         phba->hba_flag &= ~HBA_RRQ_ACTIVE;
     spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
 
     if (!(phba->pport->load_flag & FC_UNLOADING))
         lpfc_worker_wake_up(phba);
 }
 
 /**
  * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function
  * @phba: pointer to lpfc hba data structure.
  * @pmboxq: pointer to the driver internal queue element for mailbox command.
  *
  * This is the callback function to the lpfc heart-beat mailbox command.
  * If configured, the lpfc driver issues the heart-beat mailbox command to
  * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the
  * heart-beat mailbox command is issued, the driver shall set up heart-beat
  * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks
  * heart-beat outstanding state. Once the mailbox command comes back and
  * no error conditions detected, the heart-beat mailbox command timer is
  * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding
  * state is cleared for the next heart-beat. If the timer expired with the
  * heart-beat outstanding state set, the driver will put the HBA offline.
  **/
 static void
 lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
 {
     unsigned long drvr_flag;
 
     spin_lock_irqsave(&phba->hbalock, drvr_flag);
     phba->hba_flag &= ~(HBA_HBEAT_INP | HBA_HBEAT_TMO);
     spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
 
     /* Check and reset heart-beat timer if necessary */
     mempool_free(pmboxq, phba->mbox_mem_pool);
     if (!(phba->pport->fc_flag & FC_OFFLINE_MODE) &&
         !(phba->link_state == LPFC_HBA_ERROR) &&
         !(phba->pport->load_flag & FC_UNLOADING))
         mod_timer(&phba->hb_tmofunc,
               jiffies +
               msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
     return;
 }
 
 /*
  * lpfc_idle_stat_delay_work - idle_stat tracking
  *
  * This routine tracks per-cq idle_stat and determines polling decisions.
  *
  * Return codes:
  *   None
  **/
 static void
 lpfc_idle_stat_delay_work(struct work_struct *work)
 {
     struct lpfc_hba *phba = container_of(to_delayed_work(work),
                          struct lpfc_hba,
                          idle_stat_delay_work);
     struct lpfc_queue *cq;
     struct lpfc_sli4_hdw_queue *hdwq;
     struct lpfc_idle_stat *idle_stat;
     u32 i, idle_percent;
     u64 wall, wall_idle, diff_wall, diff_idle, busy_time;
 
     if (phba->pport->load_flag & FC_UNLOADING)
         return;
 
     if (phba->link_state == LPFC_HBA_ERROR ||
         phba->pport->fc_flag & FC_OFFLINE_MODE ||
         phba->cmf_active_mode != LPFC_CFG_OFF)
         goto requeue;
 
     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];
 
         /* get_cpu_idle_time returns values as running counters. Thus,
          * to know the amount for this period, the prior counter values
          * need to be subtracted from the current counter values.
          * From there, the idle time stat can be calculated as a
          * percentage of 100 - the sum of the other consumption times.
          */
         wall_idle = get_cpu_idle_time(i, &wall, 1);
         diff_idle = wall_idle - idle_stat->prev_idle;
         diff_wall = wall - idle_stat->prev_wall;
 
         if (diff_wall <= diff_idle)
             busy_time = 0;
         else
             busy_time = diff_wall - diff_idle;
 
         idle_percent = div64_u64(100 * busy_time, diff_wall);
         idle_percent = 100 - idle_percent;
 
         if (idle_percent < 15)
             cq->poll_mode = LPFC_QUEUE_WORK;
         else
             cq->poll_mode = LPFC_IRQ_POLL;
 
         idle_stat->prev_idle = wall_idle;
         idle_stat->prev_wall = wall;
     }
 
 requeue:
     schedule_delayed_work(&phba->idle_stat_delay_work,
                   msecs_to_jiffies(LPFC_IDLE_STAT_DELAY));
 }
 
 static void
 lpfc_hb_eq_delay_work(struct work_struct *work)
 {
     struct lpfc_hba *phba = container_of(to_delayed_work(work),
                          struct lpfc_hba, eq_delay_work);
     struct lpfc_eq_intr_info *eqi, *eqi_new;
     struct lpfc_queue *eq, *eq_next;
     unsigned char *ena_delay = NULL;
     uint32_t usdelay;
     int i;
 
     if (!phba->cfg_auto_imax || phba->pport->load_flag & FC_UNLOADING)
         return;
 
     if (phba->link_state == LPFC_HBA_ERROR ||
         phba->pport->fc_flag & FC_OFFLINE_MODE)
         goto requeue;
 
     ena_delay = kcalloc(phba->sli4_hba.num_possible_cpu, sizeof(*ena_delay),
                 GFP_KERNEL);
     if (!ena_delay)
         goto requeue;
 
     for (i = 0; i < phba->cfg_irq_chann; i++) {
         /* Get the EQ corresponding to the IRQ vector */
         eq = phba->sli4_hba.hba_eq_hdl[i].eq;
         if (!eq)
             continue;
         if (eq->q_mode || eq->q_flag & HBA_EQ_DELAY_CHK) {
             eq->q_flag &= ~HBA_EQ_DELAY_CHK;
             ena_delay[eq->last_cpu] = 1;
         }
     }
 
     for_each_present_cpu(i) {
         eqi = per_cpu_ptr(phba->sli4_hba.eq_info, i);
         if (ena_delay[i]) {
             usdelay = (eqi->icnt >> 10) * LPFC_EQ_DELAY_STEP;
             if (usdelay > LPFC_MAX_AUTO_EQ_DELAY)
                 usdelay = LPFC_MAX_AUTO_EQ_DELAY;
         } else {
             usdelay = 0;
         }
 
         eqi->icnt = 0;
 
         list_for_each_entry_safe(eq, eq_next, &eqi->list, cpu_list) {
             if (unlikely(eq->last_cpu != i)) {
                 eqi_new = per_cpu_ptr(phba->sli4_hba.eq_info,
                               eq->last_cpu);
                 list_move_tail(&eq->cpu_list, &eqi_new->list);
                 continue;
             }
             if (usdelay != eq->q_mode)
                 lpfc_modify_hba_eq_delay(phba, eq->hdwq, 1,
                              usdelay);
         }
     }
 
     kfree(ena_delay);
 
 requeue:
     queue_delayed_work(phba->wq, &phba->eq_delay_work,
                msecs_to_jiffies(LPFC_EQ_DELAY_MSECS));
 }
 
 /**
  * lpfc_hb_mxp_handler - Multi-XRI pools handler to adjust XRI distribution
  * @phba: pointer to lpfc hba data structure.
  *
  * For each heartbeat, this routine does some heuristic methods to adjust
  * XRI distribution. The goal is to fully utilize free XRIs.
  **/
 static void lpfc_hb_mxp_handler(struct lpfc_hba *phba)
 {
     u32 i;
     u32 hwq_count;
 
     hwq_count = phba->cfg_hdw_queue;
     for (i = 0; i < hwq_count; i++) {
         /* Adjust XRIs in private pool */
         lpfc_adjust_pvt_pool_count(phba, i);
 
         /* Adjust high watermark */
         lpfc_adjust_high_watermark(phba, i);
 
 #ifdef LPFC_MXP_STAT
         /* Snapshot pbl, pvt and busy count */
         lpfc_snapshot_mxp(phba, i);
 #endif
     }
 }
 
 /**
  * lpfc_issue_hb_mbox - Issues heart-beat mailbox command
  * @phba: pointer to lpfc hba data structure.
  *
  * If a HB mbox is not already in progrees, this routine will allocate
  * a LPFC_MBOXQ_t, populate it with a MBX_HEARTBEAT (0x31) command,
  * and issue it. The HBA_HBEAT_INP flag means the command is in progress.
  **/
 int
 lpfc_issue_hb_mbox(struct lpfc_hba *phba)
 {
     LPFC_MBOXQ_t *pmboxq;
     int retval;
 
     /* Is a Heartbeat mbox already in progress */
     if (phba->hba_flag & HBA_HBEAT_INP)
         return 0;
 
     pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!pmboxq)
         return -ENOMEM;
 
     lpfc_heart_beat(phba, pmboxq);
     pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
     pmboxq->vport = phba->pport;
     retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
 
     if (retval != MBX_BUSY && retval != MBX_SUCCESS) {
         mempool_free(pmboxq, phba->mbox_mem_pool);
         return -ENXIO;
     }
     phba->hba_flag |= HBA_HBEAT_INP;
 
     return 0;
 }
 
 /**
  * lpfc_issue_hb_tmo - Signals heartbeat timer to issue mbox command
  * @phba: pointer to lpfc hba data structure.
  *
  * The heartbeat timer (every 5 sec) will fire. If the HBA_HBEAT_TMO
  * flag is set, it will force a MBX_HEARTBEAT mbox command, regardless
  * of the value of lpfc_enable_hba_heartbeat.
  * If lpfc_enable_hba_heartbeat is set, the timeout routine will always
  * try to issue a MBX_HEARTBEAT mbox command.
  **/
 void
 lpfc_issue_hb_tmo(struct lpfc_hba *phba)
 {
     if (phba->cfg_enable_hba_heartbeat)
         return;
     phba->hba_flag |= HBA_HBEAT_TMO;
 }
 
 /**
  * lpfc_hb_timeout_handler - The HBA-timer timeout handler
  * @phba: pointer to lpfc hba data structure.
  *
  * This is the actual HBA-timer timeout handler to be invoked by the worker
  * thread whenever the HBA timer fired and HBA-timeout event posted. This
  * handler performs any periodic operations needed for the device. If such
  * periodic event has already been attended to either in the interrupt handler
  * or by processing slow-ring or fast-ring events within the HBA-timer
  * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets
  * the timer for the next timeout period. If lpfc heart-beat mailbox command
  * is configured and there is no heart-beat mailbox command outstanding, a
  * heart-beat mailbox is issued and timer set properly. Otherwise, if there
  * has been a heart-beat mailbox command outstanding, the HBA shall be put
  * to offline.
  **/
 void
 lpfc_hb_timeout_handler(struct lpfc_hba *phba)
 {
     struct lpfc_vport **vports;
     struct lpfc_dmabuf *buf_ptr;
     int retval = 0;
     int i, tmo;
     struct lpfc_sli *psli = &phba->sli;
     LIST_HEAD(completions);
 
     if (phba->cfg_xri_rebalancing) {
         /* Multi-XRI pools handler */
         lpfc_hb_mxp_handler(phba);
     }
 
     vports = lpfc_create_vport_work_array(phba);
     if (vports != NULL)
         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
             lpfc_rcv_seq_check_edtov(vports[i]);
             lpfc_fdmi_change_check(vports[i]);
         }
     lpfc_destroy_vport_work_array(phba, vports);
 
     if ((phba->link_state == LPFC_HBA_ERROR) ||
         (phba->pport->load_flag & FC_UNLOADING) ||
         (phba->pport->fc_flag & FC_OFFLINE_MODE))
         return;
 
     if (phba->elsbuf_cnt &&
         (phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {
         spin_lock_irq(&phba->hbalock);
         list_splice_init(&phba->elsbuf, &completions);
         phba->elsbuf_cnt = 0;
         phba->elsbuf_prev_cnt = 0;
         spin_unlock_irq(&phba->hbalock);
 
         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);
         }
     }
     phba->elsbuf_prev_cnt = phba->elsbuf_cnt;
 
     /* If there is no heart beat outstanding, issue a heartbeat command */
     if (phba->cfg_enable_hba_heartbeat) {
         /* If IOs are completing, no need to issue a MBX_HEARTBEAT */
         spin_lock_irq(&phba->pport->work_port_lock);
         if (time_after(phba->last_completion_time +
                 msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL),
                 jiffies)) {
             spin_unlock_irq(&phba->pport->work_port_lock);
             if (phba->hba_flag & HBA_HBEAT_INP)
                 tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
             else
                 tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
             goto out;
         }
         spin_unlock_irq(&phba->pport->work_port_lock);
 
         /* Check if a MBX_HEARTBEAT is already in progress */
         if (phba->hba_flag & HBA_HBEAT_INP) {
             /*
              * If heart beat timeout called with HBA_HBEAT_INP set
              * we need to give the hb mailbox cmd a chance to
              * complete or TMO.
              */
             lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                 "0459 Adapter heartbeat still outstanding: "
                 "last compl time was %d ms.\n",
                 jiffies_to_msecs(jiffies
                      - phba->last_completion_time));
             tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
         } else {
             if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) &&
                 (list_empty(&psli->mboxq))) {
 
                 retval = lpfc_issue_hb_mbox(phba);
                 if (retval) {
                     tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
                     goto out;
                 }
                 phba->skipped_hb = 0;
             } else if (time_before_eq(phba->last_completion_time,
                     phba->skipped_hb)) {
                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                     "2857 Last completion time not "
                     " updated in %d ms\n",
                     jiffies_to_msecs(jiffies
                          - phba->last_completion_time));
             } else
                 phba->skipped_hb = jiffies;
 
             tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
             goto out;
         }
     } else {
         /* Check to see if we want to force a MBX_HEARTBEAT */
         if (phba->hba_flag & HBA_HBEAT_TMO) {
             retval = lpfc_issue_hb_mbox(phba);
             if (retval)
                 tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
             else
                 tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
             goto out;
         }
         tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
     }
 out:
     mod_timer(&phba->hb_tmofunc, jiffies + msecs_to_jiffies(tmo));
 }
 
 /**
  * lpfc_offline_eratt - Bring lpfc offline on hardware error attention
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is called to bring the HBA offline when HBA hardware error
  * other than Port Error 6 has been detected.
  **/
 static void
 lpfc_offline_eratt(struct lpfc_hba *phba)
 {
     struct lpfc_sli   *psli = &phba->sli;
 
     spin_lock_irq(&phba->hbalock);
     psli->sli_flag &= ~LPFC_SLI_ACTIVE;
     spin_unlock_irq(&phba->hbalock);
     lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
 
     lpfc_offline(phba);
     lpfc_reset_barrier(phba);
     spin_lock_irq(&phba->hbalock);
     lpfc_sli_brdreset(phba);
     spin_unlock_irq(&phba->hbalock);
     lpfc_hba_down_post(phba);
     lpfc_sli_brdready(phba, HS_MBRDY);
     lpfc_unblock_mgmt_io(phba);
     phba->link_state = LPFC_HBA_ERROR;
     return;
 }
 
 /**
  * lpfc_sli4_offline_eratt - Bring lpfc offline on SLI4 hardware error attention
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is called to bring a SLI4 HBA offline when HBA hardware error
  * other than Port Error 6 has been detected.
  **/
 void
 lpfc_sli4_offline_eratt(struct lpfc_hba *phba)
 {
     spin_lock_irq(&phba->hbalock);
     if (phba->link_state == LPFC_HBA_ERROR &&
         test_bit(HBA_PCI_ERR, &phba->bit_flags)) {
         spin_unlock_irq(&phba->hbalock);
         return;
     }
     phba->link_state = LPFC_HBA_ERROR;
     spin_unlock_irq(&phba->hbalock);
 
     lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
     lpfc_sli_flush_io_rings(phba);
     lpfc_offline(phba);
     lpfc_hba_down_post(phba);
     lpfc_unblock_mgmt_io(phba);
 }
 
 /**
  * lpfc_handle_deferred_eratt - The HBA hardware deferred error handler
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to handle the deferred HBA hardware error
  * conditions. This type of error is indicated by HBA by setting ER1
  * and another ER bit in the host status register. The driver will
  * wait until the ER1 bit clears before handling the error condition.
  **/
 static void
 lpfc_handle_deferred_eratt(struct lpfc_hba *phba)
 {
     uint32_t old_host_status = phba->work_hs;
     struct lpfc_sli *psli = &phba->sli;
 
     /* If the pci channel is offline, ignore possible errors,
      * since we cannot communicate with the pci card anyway.
      */
     if (pci_channel_offline(phba->pcidev)) {
         spin_lock_irq(&phba->hbalock);
         phba->hba_flag &= ~DEFER_ERATT;
         spin_unlock_irq(&phba->hbalock);
         return;
     }
 
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "0479 Deferred Adapter Hardware Error "
             "Data: x%x x%x x%x\n",
             phba->work_hs, phba->work_status[0],
             phba->work_status[1]);
 
     spin_lock_irq(&phba->hbalock);
     psli->sli_flag &= ~LPFC_SLI_ACTIVE;
     spin_unlock_irq(&phba->hbalock);
 
 
     /*
      * Firmware stops when it triggred erratt. That could cause the I/Os
      * dropped by the firmware. Error iocb (I/O) on txcmplq and let the
      * SCSI layer retry it after re-establishing link.
      */
     lpfc_sli_abort_fcp_rings(phba);
 
     /*
      * There was a firmware error. Take the hba offline and then
      * attempt to restart it.
      */
     lpfc_offline_prep(phba, LPFC_MBX_WAIT);
     lpfc_offline(phba);
 
     /* Wait for the ER1 bit to clear.*/
     while (phba->work_hs & HS_FFER1) {
         msleep(100);
         if (lpfc_readl(phba->HSregaddr, &phba->work_hs)) {
             phba->work_hs = UNPLUG_ERR ;
             break;
         }
         /* If driver is unloading let the worker thread continue */
         if (phba->pport->load_flag & FC_UNLOADING) {
             phba->work_hs = 0;
             break;
         }
     }
 
     /*
      * This is to ptrotect against a race condition in which
      * first write to the host attention register clear the
      * host status register.
      */
     if ((!phba->work_hs) && (!(phba->pport->load_flag & FC_UNLOADING)))
         phba->work_hs = old_host_status & ~HS_FFER1;
 
     spin_lock_irq(&phba->hbalock);
     phba->hba_flag &= ~DEFER_ERATT;
     spin_unlock_irq(&phba->hbalock);
     phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
     phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
 }
 
 static void
 lpfc_board_errevt_to_mgmt(struct lpfc_hba *phba)
 {
     struct lpfc_board_event_header board_event;
     struct Scsi_Host *shost;
 
     board_event.event_type = FC_REG_BOARD_EVENT;
     board_event.subcategory = LPFC_EVENT_PORTINTERR;
     shost = lpfc_shost_from_vport(phba->pport);
     fc_host_post_vendor_event(shost, fc_get_event_number(),
                   sizeof(board_event),
                   (char *) &board_event,
                   LPFC_NL_VENDOR_ID);
 }
 
 /**
  * lpfc_handle_eratt_s3 - The SLI3 HBA hardware error handler
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to handle the following HBA hardware error
  * conditions:
  * 1 - HBA error attention interrupt
  * 2 - DMA ring index out of range
  * 3 - Mailbox command came back as unknown
  **/
 static void
 lpfc_handle_eratt_s3(struct lpfc_hba *phba)
 {
     struct lpfc_vport *vport = phba->pport;
     struct lpfc_sli   *psli = &phba->sli;
     uint32_t event_data;
     unsigned long temperature;
     struct temp_event temp_event_data;
     struct Scsi_Host  *shost;
 
     /* If the pci channel is offline, ignore possible errors,
      * since we cannot communicate with the pci card anyway.
      */
     if (pci_channel_offline(phba->pcidev)) {
         spin_lock_irq(&phba->hbalock);
         phba->hba_flag &= ~DEFER_ERATT;
         spin_unlock_irq(&phba->hbalock);
         return;
     }
 
     /* If resets are disabled then leave the HBA alone and return */
     if (!phba->cfg_enable_hba_reset)
         return;
 
     /* Send an internal error event to mgmt application */
     lpfc_board_errevt_to_mgmt(phba);
 
     if (phba->hba_flag & DEFER_ERATT)
         lpfc_handle_deferred_eratt(phba);
 
     if ((phba->work_hs & HS_FFER6) || (phba->work_hs & HS_FFER8)) {
         if (phba->work_hs & HS_FFER6)
             /* Re-establishing Link */
             lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
                     "1301 Re-establishing Link "
                     "Data: x%x x%x x%x\n",
                     phba->work_hs, phba->work_status[0],
                     phba->work_status[1]);
         if (phba->work_hs & HS_FFER8)
             /* Device Zeroization */
             lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
                     "2861 Host Authentication device "
                     "zeroization Data:x%x x%x x%x\n",
                     phba->work_hs, phba->work_status[0],
                     phba->work_status[1]);
 
         spin_lock_irq(&phba->hbalock);
         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
         spin_unlock_irq(&phba->hbalock);
 
         /*
         * Firmware stops when it triggled erratt with HS_FFER6.
         * That could cause the I/Os dropped by the firmware.
         * Error iocb (I/O) on txcmplq and let the SCSI layer
         * retry it after re-establishing link.
         */
         lpfc_sli_abort_fcp_rings(phba);
 
         /*
          * There was a firmware error.  Take the hba offline and then
          * attempt to restart it.
          */
         lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
         lpfc_offline(phba);
         lpfc_sli_brdrestart(phba);
         if (lpfc_online(phba) == 0) {   /* Initialize the HBA */
             lpfc_unblock_mgmt_io(phba);
             return;
         }
         lpfc_unblock_mgmt_io(phba);
     } else if (phba->work_hs & HS_CRIT_TEMP) {
         temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET);
         temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
         temp_event_data.event_code = LPFC_CRIT_TEMP;
         temp_event_data.data = (uint32_t)temperature;
 
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0406 Adapter maximum temperature exceeded "
                 "(%ld), taking this port offline "
                 "Data: x%x x%x x%x\n",
                 temperature, phba->work_hs,
                 phba->work_status[0], phba->work_status[1]);
 
         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,
                       SCSI_NL_VID_TYPE_PCI
                       | PCI_VENDOR_ID_EMULEX);
 
         spin_lock_irq(&phba->hbalock);
         phba->over_temp_state = HBA_OVER_TEMP;
         spin_unlock_irq(&phba->hbalock);
         lpfc_offline_eratt(phba);
 
     } else {
         /* The if clause above forces this code path when the status
          * failure is a value other than FFER6. Do not call the offline
          * twice. This is the adapter hardware error path.
          */
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0457 Adapter Hardware Error "
                 "Data: x%x x%x x%x\n",
                 phba->work_hs,
                 phba->work_status[0], phba->work_status[1]);
 
         event_data = FC_REG_DUMP_EVENT;
         shost = lpfc_shost_from_vport(vport);
         fc_host_post_vendor_event(shost, fc_get_event_number(),
                 sizeof(event_data), (char *) &event_data,
                 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
 
         lpfc_offline_eratt(phba);
     }
     return;
 }
 
 /**
  * lpfc_sli4_port_sta_fn_reset - The SLI4 function reset due to port status reg
  * @phba: pointer to lpfc hba data structure.
  * @mbx_action: flag for mailbox shutdown action.
  * @en_rn_msg: send reset/port recovery message.
  * This routine is invoked to perform an SLI4 port PCI function reset in
  * response to port status register polling attention. It waits for port
  * status register (ERR, RDY, RN) bits before proceeding with function reset.
  * During this process, interrupt vectors are freed and later requested
  * for handling possible port resource change.
  **/
 static int
 lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action,
                 bool en_rn_msg)
 {
     int rc;
     uint32_t intr_mode;
     LPFC_MBOXQ_t *mboxq;
 
     if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
         LPFC_SLI_INTF_IF_TYPE_2) {
         /*
          * On error status condition, driver need to wait for port
          * ready before performing reset.
          */
         rc = lpfc_sli4_pdev_status_reg_wait(phba);
         if (rc)
             return rc;
     }
 
     /* need reset: attempt for port recovery */
     if (en_rn_msg)
         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
                 "2887 Reset Needed: Attempting Port "
                 "Recovery...\n");
 
     /* If we are no wait, the HBA has been reset and is not
      * functional, thus we should clear
      * (LPFC_SLI_ACTIVE | LPFC_SLI_MBOX_ACTIVE) flags.
      */
     if (mbx_action == LPFC_MBX_NO_WAIT) {
         spin_lock_irq(&phba->hbalock);
         phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE;
         if (phba->sli.mbox_active) {
             mboxq = phba->sli.mbox_active;
             mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
             __lpfc_mbox_cmpl_put(phba, mboxq);
             phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
             phba->sli.mbox_active = NULL;
         }
         spin_unlock_irq(&phba->hbalock);
     }
 
     lpfc_offline_prep(phba, mbx_action);
     lpfc_sli_flush_io_rings(phba);
     lpfc_offline(phba);
     /* release interrupt for possible resource change */
     lpfc_sli4_disable_intr(phba);
     rc = lpfc_sli_brdrestart(phba);
     if (rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "6309 Failed to restart board\n");
         return rc;
     }
     /* request and enable interrupt */
     intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
     if (intr_mode == LPFC_INTR_ERROR) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3175 Failed to enable interrupt\n");
         return -EIO;
     }
     phba->intr_mode = intr_mode;
     rc = lpfc_online(phba);
     if (rc == 0)
         lpfc_unblock_mgmt_io(phba);
 
     return rc;
 }
 
 /**
  * lpfc_handle_eratt_s4 - The SLI4 HBA hardware error handler
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to handle the SLI4 HBA hardware error attention
  * conditions.
  **/
 static void
 lpfc_handle_eratt_s4(struct lpfc_hba *phba)
 {
     struct lpfc_vport *vport = phba->pport;
     uint32_t event_data;
     struct Scsi_Host *shost;
     uint32_t if_type;
     struct lpfc_register portstat_reg = {0};
     uint32_t reg_err1, reg_err2;
     uint32_t uerrlo_reg, uemasklo_reg;
     uint32_t smphr_port_status = 0, pci_rd_rc1, pci_rd_rc2;
     bool en_rn_msg = true;
     struct temp_event temp_event_data;
     struct lpfc_register portsmphr_reg;
     int rc, i;
 
     /* If the pci channel is offline, ignore possible errors, since
      * we cannot communicate with the pci card anyway.
      */
     if (pci_channel_offline(phba->pcidev)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3166 pci channel is offline\n");
         lpfc_sli_flush_io_rings(phba);
         return;
     }
 
     memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
     if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
     switch (if_type) {
     case LPFC_SLI_INTF_IF_TYPE_0:
         pci_rd_rc1 = lpfc_readl(
                 phba->sli4_hba.u.if_type0.UERRLOregaddr,
                 &uerrlo_reg);
         pci_rd_rc2 = lpfc_readl(
                 phba->sli4_hba.u.if_type0.UEMASKLOregaddr,
                 &uemasklo_reg);
         /* consider PCI bus read error as pci_channel_offline */
         if (pci_rd_rc1 == -EIO && pci_rd_rc2 == -EIO)
             return;
         if (!(phba->hba_flag & HBA_RECOVERABLE_UE)) {
             lpfc_sli4_offline_eratt(phba);
             return;
         }
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "7623 Checking UE recoverable");
 
         for (i = 0; i < phba->sli4_hba.ue_to_sr / 1000; i++) {
             if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
                        &portsmphr_reg.word0))
                 continue;
 
             smphr_port_status = bf_get(lpfc_port_smphr_port_status,
                            &portsmphr_reg);
             if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
                 LPFC_PORT_SEM_UE_RECOVERABLE)
                 break;
             /*Sleep for 1Sec, before checking SEMAPHORE */
             msleep(1000);
         }
 
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "4827 smphr_port_status x%x : Waited %dSec",
                 smphr_port_status, i);
 
         /* Recoverable UE, reset the HBA device */
         if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
             LPFC_PORT_SEM_UE_RECOVERABLE) {
             for (i = 0; i < 20; i++) {
                 msleep(1000);
                 if (!lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
                     &portsmphr_reg.word0) &&
                     (LPFC_POST_STAGE_PORT_READY ==
                      bf_get(lpfc_port_smphr_port_status,
                      &portsmphr_reg))) {
                     rc = lpfc_sli4_port_sta_fn_reset(phba,
                         LPFC_MBX_NO_WAIT, en_rn_msg);
                     if (rc == 0)
                         return;
                     lpfc_printf_log(phba, KERN_ERR,
                         LOG_TRACE_EVENT,
                         "4215 Failed to recover UE");
                     break;
                 }
             }
         }
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "7624 Firmware not ready: Failing UE recovery,"
                 " waited %dSec", i);
         phba->link_state = LPFC_HBA_ERROR;
         break;
 
     case LPFC_SLI_INTF_IF_TYPE_2:
     case LPFC_SLI_INTF_IF_TYPE_6:
         pci_rd_rc1 = lpfc_readl(
                 phba->sli4_hba.u.if_type2.STATUSregaddr,
                 &portstat_reg.word0);
         /* consider PCI bus read error as pci_channel_offline */
         if (pci_rd_rc1 == -EIO) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3151 PCI bus read access failure: x%x\n",
                 readl(phba->sli4_hba.u.if_type2.STATUSregaddr));
             lpfc_sli4_offline_eratt(phba);
             return;
         }
         reg_err1 = readl(phba->sli4_hba.u.if_type2.ERR1regaddr);
         reg_err2 = readl(phba->sli4_hba.u.if_type2.ERR2regaddr);
         if (bf_get(lpfc_sliport_status_oti, &portstat_reg)) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2889 Port Overtemperature event, "
                     "taking port offline Data: x%x x%x\n",
                     reg_err1, reg_err2);
 
             phba->sfp_alarm |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;
             temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
             temp_event_data.event_code = LPFC_CRIT_TEMP;
             temp_event_data.data = 0xFFFFFFFF;
 
             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,
                           SCSI_NL_VID_TYPE_PCI
                           | PCI_VENDOR_ID_EMULEX);
 
             spin_lock_irq(&phba->hbalock);
             phba->over_temp_state = HBA_OVER_TEMP;
             spin_unlock_irq(&phba->hbalock);
             lpfc_sli4_offline_eratt(phba);
             return;
         }
         if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
             reg_err2 == SLIPORT_ERR2_REG_FW_RESTART) {
             lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
                     "3143 Port Down: Firmware Update "
                     "Detected\n");
             en_rn_msg = false;
         } else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
              reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "3144 Port Down: Debug Dump\n");
         else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
              reg_err2 == SLIPORT_ERR2_REG_FUNC_PROVISON)
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "3145 Port Down: Provisioning\n");
 
         /* If resets are disabled then leave the HBA alone and return */
         if (!phba->cfg_enable_hba_reset)
             return;
 
         /* Check port status register for function reset */
         rc = lpfc_sli4_port_sta_fn_reset(phba, LPFC_MBX_NO_WAIT,
                 en_rn_msg);
         if (rc == 0) {
             /* don't report event on forced debug dump */
             if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
                 reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
                 return;
             else
                 break;
         }
         /* fall through for not able to recover */
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3152 Unrecoverable error\n");
         phba->link_state = LPFC_HBA_ERROR;
         break;
     case LPFC_SLI_INTF_IF_TYPE_1:
     default:
         break;
     }
     lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
             "3123 Report dump event to upper layer\n");
     /* Send an internal error event to mgmt application */
     lpfc_board_errevt_to_mgmt(phba);
 
     event_data = FC_REG_DUMP_EVENT;
     shost = lpfc_shost_from_vport(vport);
     fc_host_post_vendor_event(shost, fc_get_event_number(),
                   sizeof(event_data), (char *) &event_data,
                   SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
 }
 
 /**
  * lpfc_handle_eratt - Wrapper func for handling hba error attention
  * @phba: pointer to lpfc HBA data structure.
  *
  * This routine wraps the actual SLI3 or SLI4 hba error attention handling
  * routine from the API jump table function pointer from the lpfc_hba struct.
  *
  * Return codes
  *   0 - success.
  *   Any other value - error.
  **/
 void
 lpfc_handle_eratt(struct lpfc_hba *phba)
 {
     (*phba->lpfc_handle_eratt)(phba);
 }
 
 /**
  * lpfc_handle_latt - The HBA link event handler
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked from the worker thread to handle a HBA host
  * attention link event. SLI3 only.
  **/
 void
 lpfc_handle_latt(struct lpfc_hba *phba)
 {
     struct lpfc_vport *vport = phba->pport;
     struct lpfc_sli   *psli = &phba->sli;
     LPFC_MBOXQ_t *pmb;
     volatile uint32_t control;
     int rc = 0;
 
     pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!pmb) {
         rc = 1;
         goto lpfc_handle_latt_err_exit;
     }
 
     rc = lpfc_mbox_rsrc_prep(phba, pmb);
     if (rc) {
         rc = 2;
         mempool_free(pmb, phba->mbox_mem_pool);
         goto lpfc_handle_latt_err_exit;
     }
 
     /* Cleanup any outstanding ELS commands */
     lpfc_els_flush_all_cmd(phba);
     psli->slistat.link_event++;
     lpfc_read_topology(phba, pmb, (struct lpfc_dmabuf *)pmb->ctx_buf);
     pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
     pmb->vport = vport;
     /* Block ELS IOCBs until we have processed this mbox command */
     phba->sli.sli3_ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
     rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED) {
         rc = 4;
         goto lpfc_handle_latt_free_mbuf;
     }
 
     /* Clear Link Attention in HA REG */
     spin_lock_irq(&phba->hbalock);
     writel(HA_LATT, phba->HAregaddr);
     readl(phba->HAregaddr); /* flush */
     spin_unlock_irq(&phba->hbalock);
 
     return;
 
 lpfc_handle_latt_free_mbuf:
     phba->sli.sli3_ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
     lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
 lpfc_handle_latt_err_exit:
     /* Enable Link attention interrupts */
     spin_lock_irq(&phba->hbalock);
     psli->sli_flag |= LPFC_PROCESS_LA;
     control = readl(phba->HCregaddr);
     control |= HC_LAINT_ENA;
     writel(control, phba->HCregaddr);
     readl(phba->HCregaddr); /* flush */
 
     /* Clear Link Attention in HA REG */
     writel(HA_LATT, phba->HAregaddr);
     readl(phba->HAregaddr); /* flush */
     spin_unlock_irq(&phba->hbalock);
     lpfc_linkdown(phba);
     phba->link_state = LPFC_HBA_ERROR;
 
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "0300 LATT: Cannot issue READ_LA: Data:%d\n", rc);
 
     return;
 }
 
 /**
  * lpfc_parse_vpd - Parse VPD (Vital Product Data)
  * @phba: pointer to lpfc hba data structure.
  * @vpd: pointer to the vital product data.
  * @len: length of the vital product data in bytes.
  *
  * This routine parses the Vital Product Data (VPD). The VPD is treated as
  * an array of characters. In this routine, the ModelName, ProgramType, and
  * ModelDesc, etc. fields of the phba data structure will be populated.
  *
  * Return codes
  *   0 - pointer to the VPD passed in is NULL
  *   1 - success
  **/
 int
 lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len)
 {
     uint8_t lenlo, lenhi;
     int Length;
     int i, j;
     int finished = 0;
     int index = 0;
 
     if (!vpd)
         return 0;
 
     /* Vital Product */
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "0455 Vital Product Data: x%x x%x x%x x%x\n",
             (uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2],
             (uint32_t) vpd[3]);
     while (!finished && (index < (len - 4))) {
         switch (vpd[index]) {
         case 0x82:
         case 0x91:
             index += 1;
             lenlo = vpd[index];
             index += 1;
             lenhi = vpd[index];
             index += 1;
             i = ((((unsigned short)lenhi) << 8) + lenlo);
             index += i;
             break;
         case 0x90:
             index += 1;
             lenlo = vpd[index];
             index += 1;
             lenhi = vpd[index];
             index += 1;
             Length = ((((unsigned short)lenhi) << 8) + lenlo);
             if (Length > len - index)
                 Length = len - index;
             while (Length > 0) {
             /* Look for Serial Number */
             if ((vpd[index] == 'S') && (vpd[index+1] == 'N')) {
                 index += 2;
                 i = vpd[index];
                 index += 1;
                 j = 0;
                 Length -= (3+i);
                 while(i--) {
                     phba->SerialNumber[j++] = vpd[index++];
                     if (j == 31)
                         break;
                 }
                 phba->SerialNumber[j] = 0;
                 continue;
             }
             else if ((vpd[index] == 'V') && (vpd[index+1] == '1')) {
                 phba->vpd_flag |= VPD_MODEL_DESC;
                 index += 2;
                 i = vpd[index];
                 index += 1;
                 j = 0;
                 Length -= (3+i);
                 while(i--) {
                     phba->ModelDesc[j++] = vpd[index++];
                     if (j == 255)
                         break;
                 }
                 phba->ModelDesc[j] = 0;
                 continue;
             }
             else if ((vpd[index] == 'V') && (vpd[index+1] == '2')) {
                 phba->vpd_flag |= VPD_MODEL_NAME;
                 index += 2;
                 i = vpd[index];
                 index += 1;
                 j = 0;
                 Length -= (3+i);
                 while(i--) {
                     phba->ModelName[j++] = vpd[index++];
                     if (j == 79)
                         break;
                 }
                 phba->ModelName[j] = 0;
                 continue;
             }
             else if ((vpd[index] == 'V') && (vpd[index+1] == '3')) {
                 phba->vpd_flag |= VPD_PROGRAM_TYPE;
                 index += 2;
                 i = vpd[index];
                 index += 1;
                 j = 0;
                 Length -= (3+i);
                 while(i--) {
                     phba->ProgramType[j++] = vpd[index++];
                     if (j == 255)
                         break;
                 }
                 phba->ProgramType[j] = 0;
                 continue;
             }
             else if ((vpd[index] == 'V') && (vpd[index+1] == '4')) {
                 phba->vpd_flag |= VPD_PORT;
                 index += 2;
                 i = vpd[index];
                 index += 1;
                 j = 0;
                 Length -= (3+i);
                 while(i--) {
                     if ((phba->sli_rev == LPFC_SLI_REV4) &&
                         (phba->sli4_hba.pport_name_sta ==
                          LPFC_SLI4_PPNAME_GET)) {
                         j++;
                         index++;
                     } else
                         phba->Port[j++] = vpd[index++];
                     if (j == 19)
                         break;
                 }
                 if ((phba->sli_rev != LPFC_SLI_REV4) ||
                     (phba->sli4_hba.pport_name_sta ==
                      LPFC_SLI4_PPNAME_NON))
                     phba->Port[j] = 0;
                 continue;
             }
             else {
                 index += 2;
                 i = vpd[index];
                 index += 1;
                 index += i;
                 Length -= (3 + i);
             }
         }
         finished = 0;
         break;
         case 0x78:
             finished = 1;
             break;
         default:
             index ++;
             break;
         }
     }
 
     return(1);
 }
 
 /**
  * lpfc_get_atto_model_desc - Retrieve ATTO HBA device model name and description
  * @phba: pointer to lpfc hba data structure.
  * @mdp: pointer to the data structure to hold the derived model name.
  * @descp: pointer to the data structure to hold the derived description.
  *
  * This routine retrieves HBA's description based on its registered PCI device
  * ID. The @descp passed into this function points to an array of 256 chars. It
  * shall be returned with the model name, maximum speed, and the host bus type.
  * The @mdp passed into this function points to an array of 80 chars. When the
  * function returns, the @mdp will be filled with the model name.
  **/
 static void
 lpfc_get_atto_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
 {
     uint16_t sub_dev_id = phba->pcidev->subsystem_device;
     char *model = "<Unknown>";
     int tbolt = 0;
 
     switch (sub_dev_id) {
     case PCI_DEVICE_ID_CLRY_161E:
         model = "161E";
         break;
     case PCI_DEVICE_ID_CLRY_162E:
         model = "162E";
         break;
     case PCI_DEVICE_ID_CLRY_164E:
         model = "164E";
         break;
     case PCI_DEVICE_ID_CLRY_161P:
         model = "161P";
         break;
     case PCI_DEVICE_ID_CLRY_162P:
         model = "162P";
         break;
     case PCI_DEVICE_ID_CLRY_164P:
         model = "164P";
         break;
     case PCI_DEVICE_ID_CLRY_321E:
         model = "321E";
         break;
     case PCI_DEVICE_ID_CLRY_322E:
         model = "322E";
         break;
     case PCI_DEVICE_ID_CLRY_324E:
         model = "324E";
         break;
     case PCI_DEVICE_ID_CLRY_321P:
         model = "321P";
         break;
     case PCI_DEVICE_ID_CLRY_322P:
         model = "322P";
         break;
     case PCI_DEVICE_ID_CLRY_324P:
         model = "324P";
         break;
     case PCI_DEVICE_ID_TLFC_2XX2:
         model = "2XX2";
         tbolt = 1;
         break;
     case PCI_DEVICE_ID_TLFC_3162:
         model = "3162";
         tbolt = 1;
         break;
     case PCI_DEVICE_ID_TLFC_3322:
         model = "3322";
         tbolt = 1;
         break;
     default:
         model = "Unknown";
         break;
     }
 
     if (mdp && mdp[0] == '\0')
         snprintf(mdp, 79, "%s", model);
 
     if (descp && descp[0] == '\0')
         snprintf(descp, 255,
              "ATTO %s%s, Fibre Channel Adapter Initiator, Port %s",
              (tbolt) ? "ThunderLink FC " : "Celerity FC-",
              model,
              phba->Port);
 }
 
 /**
  * lpfc_get_hba_model_desc - Retrieve HBA device model name and description
  * @phba: pointer to lpfc hba data structure.
  * @mdp: pointer to the data structure to hold the derived model name.
  * @descp: pointer to the data structure to hold the derived description.
  *
  * This routine retrieves HBA's description based on its registered PCI device
  * ID. The @descp passed into this function points to an array of 256 chars. It
  * shall be returned with the model name, maximum speed, and the host bus type.
  * The @mdp passed into this function points to an array of 80 chars. When the
  * function returns, the @mdp will be filled with the model name.
  **/
 static void
 lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
 {
     lpfc_vpd_t *vp;
     uint16_t dev_id = phba->pcidev->device;
     int max_speed;
     int GE = 0;
     int oneConnect = 0; /* default is not a oneConnect */
     struct {
         char *name;
         char *bus;
         char *function;
     } m = {"<Unknown>", "", ""};
 
     if (mdp && mdp[0] != '\0'
         && descp && descp[0] != '\0')
         return;
 
     if (phba->pcidev->vendor == PCI_VENDOR_ID_ATTO) {
         lpfc_get_atto_model_desc(phba, mdp, descp);
         return;
     }
 
     if (phba->lmt & LMT_64Gb)
         max_speed = 64;
     else if (phba->lmt & LMT_32Gb)
         max_speed = 32;
     else if (phba->lmt & LMT_16Gb)
         max_speed = 16;
     else if (phba->lmt & LMT_10Gb)
         max_speed = 10;
     else if (phba->lmt & LMT_8Gb)
         max_speed = 8;
     else if (phba->lmt & LMT_4Gb)
         max_speed = 4;
     else if (phba->lmt & LMT_2Gb)
         max_speed = 2;
     else if (phba->lmt & LMT_1Gb)
         max_speed = 1;
     else
         max_speed = 0;
 
     vp = &phba->vpd;
 
     switch (dev_id) {
     case PCI_DEVICE_ID_FIREFLY:
         m = (typeof(m)){"LP6000", "PCI",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_SUPERFLY:
         if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)
             m = (typeof(m)){"LP7000", "PCI", ""};
         else
             m = (typeof(m)){"LP7000E", "PCI", ""};
         m.function = "Obsolete, Unsupported Fibre Channel Adapter";
         break;
     case PCI_DEVICE_ID_DRAGONFLY:
         m = (typeof(m)){"LP8000", "PCI",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_CENTAUR:
         if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID)
             m = (typeof(m)){"LP9002", "PCI", ""};
         else
             m = (typeof(m)){"LP9000", "PCI", ""};
         m.function = "Obsolete, Unsupported Fibre Channel Adapter";
         break;
     case PCI_DEVICE_ID_RFLY:
         m = (typeof(m)){"LP952", "PCI",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_PEGASUS:
         m = (typeof(m)){"LP9802", "PCI-X",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_THOR:
         m = (typeof(m)){"LP10000", "PCI-X",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_VIPER:
         m = (typeof(m)){"LPX1000",  "PCI-X",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_PFLY:
         m = (typeof(m)){"LP982", "PCI-X",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_TFLY:
         m = (typeof(m)){"LP1050", "PCI-X",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_HELIOS:
         m = (typeof(m)){"LP11000", "PCI-X2",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_HELIOS_SCSP:
         m = (typeof(m)){"LP11000-SP", "PCI-X2",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_HELIOS_DCSP:
         m = (typeof(m)){"LP11002-SP",  "PCI-X2",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_NEPTUNE:
         m = (typeof(m)){"LPe1000", "PCIe",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_NEPTUNE_SCSP:
         m = (typeof(m)){"LPe1000-SP", "PCIe",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_NEPTUNE_DCSP:
         m = (typeof(m)){"LPe1002-SP", "PCIe",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_BMID:
         m = (typeof(m)){"LP1150", "PCI-X2", "Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_BSMB:
         m = (typeof(m)){"LP111", "PCI-X2",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_ZEPHYR:
         m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_ZEPHYR_SCSP:
         m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_ZEPHYR_DCSP:
         m = (typeof(m)){"LP2105", "PCIe", "FCoE Adapter"};
         GE = 1;
         break;
     case PCI_DEVICE_ID_ZMID:
         m = (typeof(m)){"LPe1150", "PCIe", "Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_ZSMB:
         m = (typeof(m)){"LPe111", "PCIe", "Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_LP101:
         m = (typeof(m)){"LP101", "PCI-X",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_LP10000S:
         m = (typeof(m)){"LP10000-S", "PCI",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_LP11000S:
         m = (typeof(m)){"LP11000-S", "PCI-X2",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_LPE11000S:
         m = (typeof(m)){"LPe11000-S", "PCIe",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_SAT:
         m = (typeof(m)){"LPe12000", "PCIe", "Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_SAT_MID:
         m = (typeof(m)){"LPe1250", "PCIe", "Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_SAT_SMB:
         m = (typeof(m)){"LPe121", "PCIe", "Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_SAT_DCSP:
         m = (typeof(m)){"LPe12002-SP", "PCIe", "Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_SAT_SCSP:
         m = (typeof(m)){"LPe12000-SP", "PCIe", "Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_SAT_S:
         m = (typeof(m)){"LPe12000-S", "PCIe", "Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_PROTEUS_VF:
         m = (typeof(m)){"LPev12000", "PCIe IOV",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_PROTEUS_PF:
         m = (typeof(m)){"LPev12000", "PCIe IOV",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_PROTEUS_S:
         m = (typeof(m)){"LPemv12002-S", "PCIe IOV",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_TIGERSHARK:
         oneConnect = 1;
         m = (typeof(m)){"OCe10100", "PCIe", "FCoE"};
         break;
     case PCI_DEVICE_ID_TOMCAT:
         oneConnect = 1;
         m = (typeof(m)){"OCe11100", "PCIe", "FCoE"};
         break;
     case PCI_DEVICE_ID_FALCON:
         m = (typeof(m)){"LPSe12002-ML1-E", "PCIe",
                 "EmulexSecure Fibre"};
         break;
     case PCI_DEVICE_ID_BALIUS:
         m = (typeof(m)){"LPVe12002", "PCIe Shared I/O",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_LANCER_FC:
         m = (typeof(m)){"LPe16000", "PCIe", "Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_LANCER_FC_VF:
         m = (typeof(m)){"LPe16000", "PCIe",
                 "Obsolete, Unsupported Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_LANCER_FCOE:
         oneConnect = 1;
         m = (typeof(m)){"OCe15100", "PCIe", "FCoE"};
         break;
     case PCI_DEVICE_ID_LANCER_FCOE_VF:
         oneConnect = 1;
         m = (typeof(m)){"OCe15100", "PCIe",
                 "Obsolete, Unsupported FCoE"};
         break;
     case PCI_DEVICE_ID_LANCER_G6_FC:
         m = (typeof(m)){"LPe32000", "PCIe", "Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_LANCER_G7_FC:
         m = (typeof(m)){"LPe36000", "PCIe", "Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_LANCER_G7P_FC:
         m = (typeof(m)){"LPe38000", "PCIe", "Fibre Channel Adapter"};
         break;
     case PCI_DEVICE_ID_SKYHAWK:
     case PCI_DEVICE_ID_SKYHAWK_VF:
         oneConnect = 1;
         m = (typeof(m)){"OCe14000", "PCIe", "FCoE"};
         break;
     default:
         m = (typeof(m)){"Unknown", "", ""};
         break;
     }
 
     if (mdp && mdp[0] == '\0')
         snprintf(mdp, 79,"%s", m.name);
     /*
      * oneConnect hba requires special processing, they are all initiators
      * and we put the port number on the end
      */
     if (descp && descp[0] == '\0') {
         if (oneConnect)
             snprintf(descp, 255,
                 "Emulex OneConnect %s, %s Initiator %s",
                 m.name, m.function,
                 phba->Port);
         else if (max_speed == 0)
             snprintf(descp, 255,
                 "Emulex %s %s %s",
                 m.name, m.bus, m.function);
         else
             snprintf(descp, 255,
                 "Emulex %s %d%s %s %s",
                 m.name, max_speed, (GE) ? "GE" : "Gb",
                 m.bus, m.function);
     }
 }
 
 /**
  * lpfc_sli3_post_buffer - Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring
  * @phba: pointer to lpfc hba data structure.
  * @pring: pointer to a IOCB ring.
  * @cnt: the number of IOCBs to be posted to the IOCB ring.
  *
  * This routine posts a given number of IOCBs with the associated DMA buffer
  * descriptors specified by the cnt argument to the given IOCB ring.
  *
  * Return codes
  *   The number of IOCBs NOT able to be posted to the IOCB ring.
  **/
 int
 lpfc_sli3_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt)
 {
     IOCB_t *icmd;
     struct lpfc_iocbq *iocb;
     struct lpfc_dmabuf *mp1, *mp2;
 
     cnt += pring->missbufcnt;
 
     /* While there are buffers to post */
     while (cnt > 0) {
         /* Allocate buffer for  command iocb */
         iocb = lpfc_sli_get_iocbq(phba);
         if (iocb == NULL) {
             pring->missbufcnt = cnt;
             return cnt;
         }
         icmd = &iocb->iocb;
 
         /* 2 buffers can be posted per command */
         /* Allocate buffer to post */
         mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
         if (mp1)
             mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys);
         if (!mp1 || !mp1->virt) {
             kfree(mp1);
             lpfc_sli_release_iocbq(phba, iocb);
             pring->missbufcnt = cnt;
             return cnt;
         }
 
         INIT_LIST_HEAD(&mp1->list);
         /* Allocate buffer to post */
         if (cnt > 1) {
             mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
             if (mp2)
                 mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
                                 &mp2->phys);
             if (!mp2 || !mp2->virt) {
                 kfree(mp2);
                 lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
                 kfree(mp1);
                 lpfc_sli_release_iocbq(phba, iocb);
                 pring->missbufcnt = cnt;
                 return cnt;
             }
 
             INIT_LIST_HEAD(&mp2->list);
         } else {
             mp2 = NULL;
         }
 
         icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys);
         icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys);
         icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE;
         icmd->ulpBdeCount = 1;
         cnt--;
         if (mp2) {
             icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys);
             icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys);
             icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE;
             cnt--;
             icmd->ulpBdeCount = 2;
         }
 
         icmd->ulpCommand = CMD_QUE_RING_BUF64_CN;
         icmd->ulpLe = 1;
 
         if (lpfc_sli_issue_iocb(phba, pring->ringno, iocb, 0) ==
             IOCB_ERROR) {
             lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
             kfree(mp1);
             cnt++;
             if (mp2) {
                 lpfc_mbuf_free(phba, mp2->virt, mp2->phys);
                 kfree(mp2);
                 cnt++;
             }
             lpfc_sli_release_iocbq(phba, iocb);
             pring->missbufcnt = cnt;
             return cnt;
         }
         lpfc_sli_ringpostbuf_put(phba, pring, mp1);
         if (mp2)
             lpfc_sli_ringpostbuf_put(phba, pring, mp2);
     }
     pring->missbufcnt = 0;
     return 0;
 }
 
 /**
  * lpfc_post_rcv_buf - Post the initial receive IOCB buffers to ELS ring
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine posts initial receive IOCB buffers to the ELS ring. The
  * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is
  * set to 64 IOCBs. SLI3 only.
  *
  * Return codes
  *   0 - success (currently always success)
  **/
 static int
 lpfc_post_rcv_buf(struct lpfc_hba *phba)
 {
     struct lpfc_sli *psli = &phba->sli;
 
     /* Ring 0, ELS / CT buffers */
     lpfc_sli3_post_buffer(phba, &psli->sli3_ring[LPFC_ELS_RING], LPFC_BUF_RING0);
     /* Ring 2 - FCP no buffers needed */
 
     return 0;
 }
 
 #define S(N,V) (((V)<<(N))|((V)>>(32-(N))))
 
 /**
  * lpfc_sha_init - Set up initial array of hash table entries
  * @HashResultPointer: pointer to an array as hash table.
  *
  * This routine sets up the initial values to the array of hash table entries
  * for the LC HBAs.
  **/
 static void
 lpfc_sha_init(uint32_t * HashResultPointer)
 {
     HashResultPointer[0] = 0x67452301;
     HashResultPointer[1] = 0xEFCDAB89;
     HashResultPointer[2] = 0x98BADCFE;
     HashResultPointer[3] = 0x10325476;
     HashResultPointer[4] = 0xC3D2E1F0;
 }
 
 /**
  * lpfc_sha_iterate - Iterate initial hash table with the working hash table
  * @HashResultPointer: pointer to an initial/result hash table.
  * @HashWorkingPointer: pointer to an working hash table.
  *
  * This routine iterates an initial hash table pointed by @HashResultPointer
  * with the values from the working hash table pointeed by @HashWorkingPointer.
  * The results are putting back to the initial hash table, returned through
  * the @HashResultPointer as the result hash table.
  **/
 static void
 lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer)
 {
     int t;
     uint32_t TEMP;
     uint32_t A, B, C, D, E;
     t = 16;
     do {
         HashWorkingPointer[t] =
             S(1,
               HashWorkingPointer[t - 3] ^ HashWorkingPointer[t -
                                      8] ^
               HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]);
     } while (++t <= 79);
     t = 0;
     A = HashResultPointer[0];
     B = HashResultPointer[1];
     C = HashResultPointer[2];
     D = HashResultPointer[3];
     E = HashResultPointer[4];
 
     do {
         if (t < 20) {
             TEMP = ((B & C) | ((~B) & D)) + 0x5A827999;
         } else if (t < 40) {
             TEMP = (B ^ C ^ D) + 0x6ED9EBA1;
         } else if (t < 60) {
             TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC;
         } else {
             TEMP = (B ^ C ^ D) + 0xCA62C1D6;
         }
         TEMP += S(5, A) + E + HashWorkingPointer[t];
         E = D;
         D = C;
         C = S(30, B);
         B = A;
         A = TEMP;
     } while (++t <= 79);
 
     HashResultPointer[0] += A;
     HashResultPointer[1] += B;
     HashResultPointer[2] += C;
     HashResultPointer[3] += D;
     HashResultPointer[4] += E;
 
 }
 
 /**
  * lpfc_challenge_key - Create challenge key based on WWPN of the HBA
  * @RandomChallenge: pointer to the entry of host challenge random number array.
  * @HashWorking: pointer to the entry of the working hash array.
  *
  * This routine calculates the working hash array referred by @HashWorking
  * from the challenge random numbers associated with the host, referred by
  * @RandomChallenge. The result is put into the entry of the working hash
  * array and returned by reference through @HashWorking.
  **/
 static void
 lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking)
 {
     *HashWorking = (*RandomChallenge ^ *HashWorking);
 }
 
 /**
  * lpfc_hba_init - Perform special handling for LC HBA initialization
  * @phba: pointer to lpfc hba data structure.
  * @hbainit: pointer to an array of unsigned 32-bit integers.
  *
  * This routine performs the special handling for LC HBA initialization.
  **/
 void
 lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit)
 {
     int t;
     uint32_t *HashWorking;
     uint32_t *pwwnn = (uint32_t *) phba->wwnn;
 
     HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL);
     if (!HashWorking)
         return;
 
     HashWorking[0] = HashWorking[78] = *pwwnn++;
     HashWorking[1] = HashWorking[79] = *pwwnn;
 
     for (t = 0; t < 7; t++)
         lpfc_challenge_key(phba->RandomData + t, HashWorking + t);
 
     lpfc_sha_init(hbainit);
     lpfc_sha_iterate(hbainit, HashWorking);
     kfree(HashWorking);
 }
 
 /**
  * lpfc_cleanup - Performs vport cleanups before deleting a vport
  * @vport: pointer to a virtual N_Port data structure.
  *
  * This routine performs the necessary cleanups before deleting the @vport.
  * It invokes the discovery state machine to perform necessary state
  * transitions and to release the ndlps associated with the @vport. Note,
  * the physical port is treated as @vport 0.
  **/
 void
 lpfc_cleanup(struct lpfc_vport *vport)
 {
     struct lpfc_hba   *phba = vport->phba;
     struct lpfc_nodelist *ndlp, *next_ndlp;
     int i = 0;
 
     if (phba->link_state > LPFC_LINK_DOWN)
         lpfc_port_link_failure(vport);
 
     /* Clean up VMID resources */
     if (lpfc_is_vmid_enabled(phba))
         lpfc_vmid_vport_cleanup(vport);
 
     list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
         if (vport->port_type != LPFC_PHYSICAL_PORT &&
             ndlp->nlp_DID == Fabric_DID) {
             /* Just free up ndlp with Fabric_DID for vports */
             lpfc_nlp_put(ndlp);
             continue;
         }
 
         if (ndlp->nlp_DID == Fabric_Cntl_DID &&
             ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
             lpfc_nlp_put(ndlp);
             continue;
         }
 
         /* Fabric Ports not in UNMAPPED state are cleaned up in the
          * DEVICE_RM event.
          */
         if (ndlp->nlp_type & NLP_FABRIC &&
             ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
             lpfc_disc_state_machine(vport, ndlp, NULL,
                     NLP_EVT_DEVICE_RECOVERY);
 
         if (!(ndlp->fc4_xpt_flags & (NVME_XPT_REGD|SCSI_XPT_REGD)))
             lpfc_disc_state_machine(vport, ndlp, NULL,
                     NLP_EVT_DEVICE_RM);
     }
 
     /* This is a special case flush to return all
      * IOs before entering this loop. There are
      * two points in the code where a flush is
      * avoided if the FC_UNLOADING flag is set.
      * one is in the multipool destroy,
      * (this prevents a crash) and the other is
      * in the nvme abort handler, ( also prevents
      * a crash). Both of these exceptions are
      * cases where the slot is still accessible.
      * The flush here is only when the pci slot
      * is offline.
      */
     if (vport->load_flag & FC_UNLOADING &&
         pci_channel_offline(phba->pcidev))
         lpfc_sli_flush_io_rings(vport->phba);
 
     /* At this point, ALL ndlp's should be gone
      * because of the previous NLP_EVT_DEVICE_RM.
      * Lets wait for this to happen, if needed.
      */
     while (!list_empty(&vport->fc_nodes)) {
         if (i++ > 3000) {
             lpfc_printf_vlog(vport, KERN_ERR,
                      LOG_TRACE_EVENT,
                 "0233 Nodelist not empty\n");
             list_for_each_entry_safe(ndlp, next_ndlp,
                         &vport->fc_nodes, nlp_listp) {
                 lpfc_printf_vlog(ndlp->vport, KERN_ERR,
                          LOG_DISCOVERY,
                          "0282 did:x%x ndlp:x%px "
                          "refcnt:%d xflags x%x nflag x%x\n",
                          ndlp->nlp_DID, (void *)ndlp,
                          kref_read(&ndlp->kref),
                          ndlp->fc4_xpt_flags,
                          ndlp->nlp_flag);
             }
             break;
         }
 
         /* Wait for any activity on ndlps to settle */
         msleep(10);
     }
     lpfc_cleanup_vports_rrqs(vport, NULL);
 }
 
 /**
  * lpfc_stop_vport_timers - Stop all the timers associated with a vport
  * @vport: pointer to a virtual N_Port data structure.
  *
  * This routine stops all the timers associated with a @vport. This function
  * is invoked before disabling or deleting a @vport. Note that the physical
  * port is treated as @vport 0.
  **/
 void
 lpfc_stop_vport_timers(struct lpfc_vport *vport)
 {
     del_timer_sync(&vport->els_tmofunc);
     del_timer_sync(&vport->delayed_disc_tmo);
     lpfc_can_disctmo(vport);
     return;
 }
 
 /**
  * __lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine stops the SLI4 FCF rediscover wait timer if it's on. The
  * caller of this routine should already hold the host lock.
  **/
 void
 __lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
 {
     /* Clear pending FCF rediscovery wait flag */
     phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
 
     /* Now, try to stop the timer */
     del_timer(&phba->fcf.redisc_wait);
 }
 
 /**
  * lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine stops the SLI4 FCF rediscover wait timer if it's on. It
  * checks whether the FCF rediscovery wait timer is pending with the host
  * lock held before proceeding with disabling the timer and clearing the
  * wait timer pendig flag.
  **/
 void
 lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
 {
     spin_lock_irq(&phba->hbalock);
     if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
         /* FCF rediscovery timer already fired or stopped */
         spin_unlock_irq(&phba->hbalock);
         return;
     }
     __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
     /* Clear failover in progress flags */
     phba->fcf.fcf_flag &= ~(FCF_DEAD_DISC | FCF_ACVL_DISC);
     spin_unlock_irq(&phba->hbalock);
 }
 
 /**
  * lpfc_cmf_stop - Stop CMF processing
  * @phba: pointer to lpfc hba data structure.
  *
  * This is called when the link goes down or if CMF mode is turned OFF.
  * It is also called when going offline or unloaded just before the
  * congestion info buffer is unregistered.
  **/
 void
 lpfc_cmf_stop(struct lpfc_hba *phba)
 {
     int cpu;
     struct lpfc_cgn_stat *cgs;
 
     /* We only do something if CMF is enabled */
     if (!phba->sli4_hba.pc_sli4_params.cmf)
         return;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
             "6221 Stop CMF / Cancel Timer\n");
 
     /* Cancel the CMF timer */
     hrtimer_cancel(&phba->cmf_timer);
 
     /* Zero CMF counters */
     atomic_set(&phba->cmf_busy, 0);
     for_each_present_cpu(cpu) {
         cgs = per_cpu_ptr(phba->cmf_stat, cpu);
         atomic64_set(&cgs->total_bytes, 0);
         atomic64_set(&cgs->rcv_bytes, 0);
         atomic_set(&cgs->rx_io_cnt, 0);
         atomic64_set(&cgs->rx_latency, 0);
     }
     atomic_set(&phba->cmf_bw_wait, 0);
 
     /* Resume any blocked IO - Queue unblock on workqueue */
     queue_work(phba->wq, &phba->unblock_request_work);
 }
 
 static inline uint64_t
 lpfc_get_max_line_rate(struct lpfc_hba *phba)
 {
     uint64_t rate = lpfc_sli_port_speed_get(phba);
 
     return ((((unsigned long)rate) * 1024 * 1024) / 10);
 }
 
 void
 lpfc_cmf_signal_init(struct lpfc_hba *phba)
 {
     lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
             "6223 Signal CMF init\n");
 
     /* Use the new fc_linkspeed to recalculate */
     phba->cmf_interval_rate = LPFC_CMF_INTERVAL;
     phba->cmf_max_line_rate = lpfc_get_max_line_rate(phba);
     phba->cmf_link_byte_count = div_u64(phba->cmf_max_line_rate *
                         phba->cmf_interval_rate, 1000);
     phba->cmf_max_bytes_per_interval = phba->cmf_link_byte_count;
 
     /* This is a signal to firmware to sync up CMF BW with link speed */
     lpfc_issue_cmf_sync_wqe(phba, 0, 0);
 }
 
 /**
  * lpfc_cmf_start - Start CMF processing
  * @phba: pointer to lpfc hba data structure.
  *
  * This is called when the link comes up or if CMF mode is turned OFF
  * to Monitor or Managed.
  **/
 void
 lpfc_cmf_start(struct lpfc_hba *phba)
 {
     struct lpfc_cgn_stat *cgs;
     int cpu;
 
     /* We only do something if CMF is enabled */
     if (!phba->sli4_hba.pc_sli4_params.cmf ||
         phba->cmf_active_mode == LPFC_CFG_OFF)
         return;
 
     /* Reinitialize congestion buffer info */
     lpfc_init_congestion_buf(phba);
 
     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->cmf_busy, 0);
     for_each_present_cpu(cpu) {
         cgs = per_cpu_ptr(phba->cmf_stat, cpu);
         atomic64_set(&cgs->total_bytes, 0);
         atomic64_set(&cgs->rcv_bytes, 0);
         atomic_set(&cgs->rx_io_cnt, 0);
         atomic64_set(&cgs->rx_latency, 0);
     }
     phba->cmf_latency.tv_sec = 0;
     phba->cmf_latency.tv_nsec = 0;
 
     lpfc_cmf_signal_init(phba);
 
     lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
             "6222 Start CMF / Timer\n");
 
     phba->cmf_timer_cnt = 0;
     hrtimer_start(&phba->cmf_timer,
               ktime_set(0, LPFC_CMF_INTERVAL * 1000000),
               HRTIMER_MODE_REL);
     /* Setup for latency check in IO cmpl routines */
     ktime_get_real_ts64(&phba->cmf_latency);
 
     atomic_set(&phba->cmf_bw_wait, 0);
     atomic_set(&phba->cmf_stop_io, 0);
 }
 
 /**
  * lpfc_stop_hba_timers - Stop all the timers associated with an HBA
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine stops all the timers associated with a HBA. This function is
  * invoked before either putting a HBA offline or unloading the driver.
  **/
 void
 lpfc_stop_hba_timers(struct lpfc_hba *phba)
 {
     if (phba->pport)
         lpfc_stop_vport_timers(phba->pport);
     cancel_delayed_work_sync(&phba->eq_delay_work);
     cancel_delayed_work_sync(&phba->idle_stat_delay_work);
     del_timer_sync(&phba->sli.mbox_tmo);
     del_timer_sync(&phba->fabric_block_timer);
     del_timer_sync(&phba->eratt_poll);
     del_timer_sync(&phba->hb_tmofunc);
     if (phba->sli_rev == LPFC_SLI_REV4) {
         del_timer_sync(&phba->rrq_tmr);
         phba->hba_flag &= ~HBA_RRQ_ACTIVE;
     }
     phba->hba_flag &= ~(HBA_HBEAT_INP | HBA_HBEAT_TMO);
 
     switch (phba->pci_dev_grp) {
     case LPFC_PCI_DEV_LP:
         /* Stop any LightPulse device specific driver timers */
         del_timer_sync(&phba->fcp_poll_timer);
         break;
     case LPFC_PCI_DEV_OC:
         /* Stop any OneConnect device specific driver timers */
         lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0297 Invalid device group (x%x)\n",
                 phba->pci_dev_grp);
         break;
     }
     return;
 }
 
 /**
  * lpfc_block_mgmt_io - Mark a HBA's management interface as blocked
  * @phba: pointer to lpfc hba data structure.
  * @mbx_action: flag for mailbox no wait action.
  *
  * This routine marks a HBA's management interface as blocked. Once the HBA's
  * management interface is marked as blocked, all the user space access to
  * the HBA, whether they are from sysfs interface or libdfc interface will
  * all be blocked. The HBA is set to block the management interface when the
  * driver prepares the HBA interface for online or offline.
  **/
 static void
 lpfc_block_mgmt_io(struct lpfc_hba *phba, int mbx_action)
 {
     unsigned long iflag;
     uint8_t actcmd = MBX_HEARTBEAT;
     unsigned long timeout;
 
     spin_lock_irqsave(&phba->hbalock, iflag);
     phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
     spin_unlock_irqrestore(&phba->hbalock, iflag);
     if (mbx_action == LPFC_MBX_NO_WAIT)
         return;
     timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies;
     spin_lock_irqsave(&phba->hbalock, iflag);
     if (phba->sli.mbox_active) {
         actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
         /* Determine how long we might wait for the active mailbox
          * command to be gracefully completed by firmware.
          */
         timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
                 phba->sli.mbox_active) * 1000) + jiffies;
     }
     spin_unlock_irqrestore(&phba->hbalock, iflag);
 
     /* Wait for the outstnading mailbox command to complete */
     while (phba->sli.mbox_active) {
         /* Check active mailbox complete status every 2ms */
         msleep(2);
         if (time_after(jiffies, timeout)) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2813 Mgmt IO is Blocked %x "
                     "- mbox cmd %x still active\n",
                     phba->sli.sli_flag, actcmd);
             break;
         }
     }
 }
 
 /**
  * lpfc_sli4_node_prep - Assign RPIs for active nodes.
  * @phba: pointer to lpfc hba data structure.
  *
  * Allocate RPIs for all active remote nodes. This is needed whenever
  * an SLI4 adapter is reset and the driver is not unloading. Its purpose
  * is to fixup the temporary rpi assignments.
  **/
 void
 lpfc_sli4_node_prep(struct lpfc_hba *phba)
 {
     struct lpfc_nodelist  *ndlp, *next_ndlp;
     struct lpfc_vport **vports;
     int i, rpi;
 
     if (phba->sli_rev != LPFC_SLI_REV4)
         return;
 
     vports = lpfc_create_vport_work_array(phba);
     if (vports == NULL)
         return;
 
     for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
         if (vports[i]->load_flag & FC_UNLOADING)
             continue;
 
         list_for_each_entry_safe(ndlp, next_ndlp,
                      &vports[i]->fc_nodes,
                      nlp_listp) {
             rpi = lpfc_sli4_alloc_rpi(phba);
             if (rpi == LPFC_RPI_ALLOC_ERROR) {
                 /* TODO print log? */
                 continue;
             }
             ndlp->nlp_rpi = rpi;
             lpfc_printf_vlog(ndlp->vport, KERN_INFO,
                      LOG_NODE | LOG_DISCOVERY,
                      "0009 Assign RPI x%x to ndlp x%px "
                      "DID:x%06x flg:x%x\n",
                      ndlp->nlp_rpi, ndlp, ndlp->nlp_DID,
                      ndlp->nlp_flag);
         }
     }
     lpfc_destroy_vport_work_array(phba, vports);
 }
 
 /**
  * lpfc_create_expedite_pool - create expedite pool
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine moves a batch of XRIs from lpfc_io_buf_list_put of HWQ 0
  * to expedite pool. Mark them as expedite.
  **/
 static void lpfc_create_expedite_pool(struct lpfc_hba *phba)
 {
     struct lpfc_sli4_hdw_queue *qp;
     struct lpfc_io_buf *lpfc_ncmd;
     struct lpfc_io_buf *lpfc_ncmd_next;
     struct lpfc_epd_pool *epd_pool;
     unsigned long iflag;
 
     epd_pool = &phba->epd_pool;
     qp = &phba->sli4_hba.hdwq[0];
 
     spin_lock_init(&epd_pool->lock);
     spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
     spin_lock(&epd_pool->lock);
     INIT_LIST_HEAD(&epd_pool->list);
     list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
                  &qp->lpfc_io_buf_list_put, list) {
         list_move_tail(&lpfc_ncmd->list, &epd_pool->list);
         lpfc_ncmd->expedite = true;
         qp->put_io_bufs--;
         epd_pool->count++;
         if (epd_pool->count >= XRI_BATCH)
             break;
     }
     spin_unlock(&epd_pool->lock);
     spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
 }
 
 /**
  * lpfc_destroy_expedite_pool - destroy expedite pool
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine returns XRIs from expedite pool to lpfc_io_buf_list_put
  * of HWQ 0. Clear the mark.
  **/
 static void lpfc_destroy_expedite_pool(struct lpfc_hba *phba)
 {
     struct lpfc_sli4_hdw_queue *qp;
     struct lpfc_io_buf *lpfc_ncmd;
     struct lpfc_io_buf *lpfc_ncmd_next;
     struct lpfc_epd_pool *epd_pool;
     unsigned long iflag;
 
     epd_pool = &phba->epd_pool;
     qp = &phba->sli4_hba.hdwq[0];
 
     spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
     spin_lock(&epd_pool->lock);
     list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
                  &epd_pool->list, list) {
         list_move_tail(&lpfc_ncmd->list,
                    &qp->lpfc_io_buf_list_put);
         lpfc_ncmd->flags = false;
         qp->put_io_bufs++;
         epd_pool->count--;
     }
     spin_unlock(&epd_pool->lock);
     spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
 }
 
 /**
  * lpfc_create_multixri_pools - create multi-XRI pools
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine initialize public, private per HWQ. Then, move XRIs from
  * lpfc_io_buf_list_put to public pool. High and low watermark are also
  * Initialized.
  **/
 void lpfc_create_multixri_pools(struct lpfc_hba *phba)
 {
     u32 i, j;
     u32 hwq_count;
     u32 count_per_hwq;
     struct lpfc_io_buf *lpfc_ncmd;
     struct lpfc_io_buf *lpfc_ncmd_next;
     unsigned long iflag;
     struct lpfc_sli4_hdw_queue *qp;
     struct lpfc_multixri_pool *multixri_pool;
     struct lpfc_pbl_pool *pbl_pool;
     struct lpfc_pvt_pool *pvt_pool;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "1234 num_hdw_queue=%d num_present_cpu=%d common_xri_cnt=%d\n",
             phba->cfg_hdw_queue, phba->sli4_hba.num_present_cpu,
             phba->sli4_hba.io_xri_cnt);
 
     if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
         lpfc_create_expedite_pool(phba);
 
     hwq_count = phba->cfg_hdw_queue;
     count_per_hwq = phba->sli4_hba.io_xri_cnt / hwq_count;
 
     for (i = 0; i < hwq_count; i++) {
         multixri_pool = kzalloc(sizeof(*multixri_pool), GFP_KERNEL);
 
         if (!multixri_pool) {
             lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                     "1238 Failed to allocate memory for "
                     "multixri_pool\n");
 
             if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
                 lpfc_destroy_expedite_pool(phba);
 
             j = 0;
             while (j < i) {
                 qp = &phba->sli4_hba.hdwq[j];
                 kfree(qp->p_multixri_pool);
                 j++;
             }
             phba->cfg_xri_rebalancing = 0;
             return;
         }
 
         qp = &phba->sli4_hba.hdwq[i];
         qp->p_multixri_pool = multixri_pool;
 
         multixri_pool->xri_limit = count_per_hwq;
         multixri_pool->rrb_next_hwqid = i;
 
         /* Deal with public free xri pool */
         pbl_pool = &multixri_pool->pbl_pool;
         spin_lock_init(&pbl_pool->lock);
         spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
         spin_lock(&pbl_pool->lock);
         INIT_LIST_HEAD(&pbl_pool->list);
         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
                      &qp->lpfc_io_buf_list_put, list) {
             list_move_tail(&lpfc_ncmd->list, &pbl_pool->list);
             qp->put_io_bufs--;
             pbl_pool->count++;
         }
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "1235 Moved %d buffers from PUT list over to pbl_pool[%d]\n",
                 pbl_pool->count, i);
         spin_unlock(&pbl_pool->lock);
         spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
 
         /* Deal with private free xri pool */
         pvt_pool = &multixri_pool->pvt_pool;
         pvt_pool->high_watermark = multixri_pool->xri_limit / 2;
         pvt_pool->low_watermark = XRI_BATCH;
         spin_lock_init(&pvt_pool->lock);
         spin_lock_irqsave(&pvt_pool->lock, iflag);
         INIT_LIST_HEAD(&pvt_pool->list);
         pvt_pool->count = 0;
         spin_unlock_irqrestore(&pvt_pool->lock, iflag);
     }
 }
 
 /**
  * lpfc_destroy_multixri_pools - destroy multi-XRI pools
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine returns XRIs from public/private to lpfc_io_buf_list_put.
  **/
 static void lpfc_destroy_multixri_pools(struct lpfc_hba *phba)
 {
     u32 i;
     u32 hwq_count;
     struct lpfc_io_buf *lpfc_ncmd;
     struct lpfc_io_buf *lpfc_ncmd_next;
     unsigned long iflag;
     struct lpfc_sli4_hdw_queue *qp;
     struct lpfc_multixri_pool *multixri_pool;
     struct lpfc_pbl_pool *pbl_pool;
     struct lpfc_pvt_pool *pvt_pool;
 
     if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
         lpfc_destroy_expedite_pool(phba);
 
     if (!(phba->pport->load_flag & FC_UNLOADING))
         lpfc_sli_flush_io_rings(phba);
 
     hwq_count = phba->cfg_hdw_queue;
 
     for (i = 0; i < hwq_count; i++) {
         qp = &phba->sli4_hba.hdwq[i];
         multixri_pool = qp->p_multixri_pool;
         if (!multixri_pool)
             continue;
 
         qp->p_multixri_pool = NULL;
 
         spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
 
         /* Deal with public free xri pool */
         pbl_pool = &multixri_pool->pbl_pool;
         spin_lock(&pbl_pool->lock);
 
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "1236 Moving %d buffers from pbl_pool[%d] TO PUT list\n",
                 pbl_pool->count, i);
 
         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
                      &pbl_pool->list, list) {
             list_move_tail(&lpfc_ncmd->list,
                        &qp->lpfc_io_buf_list_put);
             qp->put_io_bufs++;
             pbl_pool->count--;
         }
 
         INIT_LIST_HEAD(&pbl_pool->list);
         pbl_pool->count = 0;
 
         spin_unlock(&pbl_pool->lock);
 
         /* Deal with private free xri pool */
         pvt_pool = &multixri_pool->pvt_pool;
         spin_lock(&pvt_pool->lock);
 
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "1237 Moving %d buffers from pvt_pool[%d] TO PUT list\n",
                 pvt_pool->count, i);
 
         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
                      &pvt_pool->list, list) {
             list_move_tail(&lpfc_ncmd->list,
                        &qp->lpfc_io_buf_list_put);
             qp->put_io_bufs++;
             pvt_pool->count--;
         }
 
         INIT_LIST_HEAD(&pvt_pool->list);
         pvt_pool->count = 0;
 
         spin_unlock(&pvt_pool->lock);
         spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
 
         kfree(multixri_pool);
     }
 }
 
 /**
  * lpfc_online - Initialize and bring a HBA online
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine initializes the HBA and brings a HBA online. During this
  * process, the management interface is blocked to prevent user space access
  * to the HBA interfering with the driver initialization.
  *
  * Return codes
  *   0 - successful
  *   1 - failed
  **/
 int
 lpfc_online(struct lpfc_hba *phba)
 {
     struct lpfc_vport *vport;
     struct lpfc_vport **vports;
     int i, error = 0;
     bool vpis_cleared = false;
 
     if (!phba)
         return 0;
     vport = phba->pport;
 
     if (!(vport->fc_flag & FC_OFFLINE_MODE))
         return 0;
 
     lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
             "0458 Bring Adapter online\n");
 
     lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         if (lpfc_sli4_hba_setup(phba)) { /* Initialize SLI4 HBA */
             lpfc_unblock_mgmt_io(phba);
             return 1;
         }
         spin_lock_irq(&phba->hbalock);
         if (!phba->sli4_hba.max_cfg_param.vpi_used)
             vpis_cleared = true;
         spin_unlock_irq(&phba->hbalock);
 
         /* Reestablish the local initiator port.
          * The offline process destroyed the previous lport.
          */
         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME &&
                 !phba->nvmet_support) {
             error = lpfc_nvme_create_localport(phba->pport);
             if (error)
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "6132 NVME restore reg failed "
                     "on nvmei error x%x\n", error);
         }
     } else {
         lpfc_sli_queue_init(phba);
         if (lpfc_sli_hba_setup(phba)) { /* Initialize SLI2/SLI3 HBA */
             lpfc_unblock_mgmt_io(phba);
             return 1;
         }
     }
 
     vports = lpfc_create_vport_work_array(phba);
     if (vports != NULL) {
         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
             struct Scsi_Host *shost;
             shost = lpfc_shost_from_vport(vports[i]);
             spin_lock_irq(shost->host_lock);
             vports[i]->fc_flag &= ~FC_OFFLINE_MODE;
             if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
                 vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
             if (phba->sli_rev == LPFC_SLI_REV4) {
                 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
                 if ((vpis_cleared) &&
                     (vports[i]->port_type !=
                     LPFC_PHYSICAL_PORT))
                     vports[i]->vpi = 0;
             }
             spin_unlock_irq(shost->host_lock);
         }
     }
     lpfc_destroy_vport_work_array(phba, vports);
 
     if (phba->cfg_xri_rebalancing)
         lpfc_create_multixri_pools(phba);
 
     lpfc_cpuhp_add(phba);
 
     lpfc_unblock_mgmt_io(phba);
     return 0;
 }
 
 /**
  * lpfc_unblock_mgmt_io - Mark a HBA's management interface to be not blocked
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine marks a HBA's management interface as not blocked. Once the
  * HBA's management interface is marked as not blocked, all the user space
  * access to the HBA, whether they are from sysfs interface or libdfc
  * interface will be allowed. The HBA is set to block the management interface
  * when the driver prepares the HBA interface for online or offline and then
  * set to unblock the management interface afterwards.
  **/
 void
 lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
 {
     unsigned long iflag;
 
     spin_lock_irqsave(&phba->hbalock, iflag);
     phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO;
     spin_unlock_irqrestore(&phba->hbalock, iflag);
 }
 
 /**
  * lpfc_offline_prep - Prepare a HBA to be brought offline
  * @phba: pointer to lpfc hba data structure.
  * @mbx_action: flag for mailbox shutdown action.
  *
  * This routine is invoked to prepare a HBA to be brought offline. It performs
  * unregistration login to all the nodes on all vports and flushes the mailbox
  * queue to make it ready to be brought offline.
  **/
 void
 lpfc_offline_prep(struct lpfc_hba *phba, int mbx_action)
 {
     struct lpfc_vport *vport = phba->pport;
     struct lpfc_nodelist  *ndlp, *next_ndlp;
     struct lpfc_vport **vports;
     struct Scsi_Host *shost;
     int i;
     int offline;
     bool hba_pci_err;
 
     if (vport->fc_flag & FC_OFFLINE_MODE)
         return;
 
     lpfc_block_mgmt_io(phba, mbx_action);
 
     lpfc_linkdown(phba);
 
     offline =  pci_channel_offline(phba->pcidev);
     hba_pci_err = test_bit(HBA_PCI_ERR, &phba->bit_flags);
 
     /* Issue an unreg_login to all nodes on all vports */
     vports = lpfc_create_vport_work_array(phba);
     if (vports != NULL) {
         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
             if (vports[i]->load_flag & FC_UNLOADING)
                 continue;
             shost = lpfc_shost_from_vport(vports[i]);
             spin_lock_irq(shost->host_lock);
             vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
             vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
             vports[i]->fc_flag &= ~FC_VFI_REGISTERED;
             spin_unlock_irq(shost->host_lock);
 
             shost = lpfc_shost_from_vport(vports[i]);
             list_for_each_entry_safe(ndlp, next_ndlp,
                          &vports[i]->fc_nodes,
                          nlp_listp) {
 
                 spin_lock_irq(&ndlp->lock);
                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
                 spin_unlock_irq(&ndlp->lock);
 
                 if (offline || hba_pci_err) {
                     spin_lock_irq(&ndlp->lock);
                     ndlp->nlp_flag &= ~(NLP_UNREG_INP |
                                 NLP_RPI_REGISTERED);
                     spin_unlock_irq(&ndlp->lock);
                     if (phba->sli_rev == LPFC_SLI_REV4)
                         lpfc_sli_rpi_release(vports[i],
                                      ndlp);
                 } else {
                     lpfc_unreg_rpi(vports[i], ndlp);
                 }
                 /*
                  * Whenever an SLI4 port goes offline, free the
                  * RPI. Get a new RPI when the adapter port
                  * comes back online.
                  */
                 if (phba->sli_rev == LPFC_SLI_REV4) {
                     lpfc_printf_vlog(vports[i], KERN_INFO,
                          LOG_NODE | LOG_DISCOVERY,
                          "0011 Free RPI x%x on "
                          "ndlp: x%px did x%x\n",
                          ndlp->nlp_rpi, ndlp,
                          ndlp->nlp_DID);
                     lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
                     ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
                 }
 
                 if (ndlp->nlp_type & NLP_FABRIC) {
                     lpfc_disc_state_machine(vports[i], ndlp,
                         NULL, NLP_EVT_DEVICE_RECOVERY);
 
                     /* Don't remove the node unless the node
                      * has been unregistered with the
                      * transport, and we're not in recovery
                      * before dev_loss_tmo triggered.
                      * Otherwise, let dev_loss take care of
                      * the node.
                      */
                     if (!(ndlp->save_flags &
                           NLP_IN_RECOV_POST_DEV_LOSS) &&
                         !(ndlp->fc4_xpt_flags &
                           (NVME_XPT_REGD | SCSI_XPT_REGD)))
                         lpfc_disc_state_machine
                             (vports[i], ndlp,
                              NULL,
                              NLP_EVT_DEVICE_RM);
                 }
             }
         }
     }
     lpfc_destroy_vport_work_array(phba, vports);
 
     lpfc_sli_mbox_sys_shutdown(phba, mbx_action);
 
     if (phba->wq)
         flush_workqueue(phba->wq);
 }
 
 /**
  * lpfc_offline - Bring a HBA offline
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine actually brings a HBA offline. It stops all the timers
  * associated with the HBA, brings down the SLI layer, and eventually
  * marks the HBA as in offline state for the upper layer protocol.
  **/
 void
 lpfc_offline(struct lpfc_hba *phba)
 {
     struct Scsi_Host  *shost;
     struct lpfc_vport **vports;
     int i;
 
     if (phba->pport->fc_flag & FC_OFFLINE_MODE)
         return;
 
     /* stop port and all timers associated with this hba */
     lpfc_stop_port(phba);
 
     /* Tear down the local and target port registrations.  The
      * nvme transports need to cleanup.
      */
     lpfc_nvmet_destroy_targetport(phba);
     lpfc_nvme_destroy_localport(phba->pport);
 
     vports = lpfc_create_vport_work_array(phba);
     if (vports != NULL)
         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
             lpfc_stop_vport_timers(vports[i]);
     lpfc_destroy_vport_work_array(phba, vports);
     lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
             "0460 Bring Adapter offline\n");
     /* Bring down the SLI Layer and cleanup.  The HBA is offline
        now.  */
     lpfc_sli_hba_down(phba);
     spin_lock_irq(&phba->hbalock);
     phba->work_ha = 0;
     spin_unlock_irq(&phba->hbalock);
     vports = lpfc_create_vport_work_array(phba);
     if (vports != NULL)
         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
             shost = lpfc_shost_from_vport(vports[i]);
             spin_lock_irq(shost->host_lock);
             vports[i]->work_port_events = 0;
             vports[i]->fc_flag |= FC_OFFLINE_MODE;
             spin_unlock_irq(shost->host_lock);
         }
     lpfc_destroy_vport_work_array(phba, vports);
     /* If OFFLINE flag is clear (i.e. unloading), cpuhp removal is handled
      * in hba_unset
      */
     if (phba->pport->fc_flag & FC_OFFLINE_MODE)
         __lpfc_cpuhp_remove(phba);
 
     if (phba->cfg_xri_rebalancing)
         lpfc_destroy_multixri_pools(phba);
 }
 
 /**
  * lpfc_scsi_free - Free all the SCSI buffers and IOCBs from driver lists
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is to free all the SCSI buffers and IOCBs from the driver
  * list back to kernel. It is called from lpfc_pci_remove_one to free
  * the internal resources before the device is removed from the system.
  **/
 static void
 lpfc_scsi_free(struct lpfc_hba *phba)
 {
     struct lpfc_io_buf *sb, *sb_next;
 
     if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
         return;
 
     spin_lock_irq(&phba->hbalock);
 
     /* Release all the lpfc_scsi_bufs maintained by this host. */
 
     spin_lock(&phba->scsi_buf_list_put_lock);
     list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_put,
                  list) {
         list_del(&sb->list);
         dma_pool_free(phba->lpfc_sg_dma_buf_pool, sb->data,
                   sb->dma_handle);
         kfree(sb);
         phba->total_scsi_bufs--;
     }
     spin_unlock(&phba->scsi_buf_list_put_lock);
 
     spin_lock(&phba->scsi_buf_list_get_lock);
     list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_get,
                  list) {
         list_del(&sb->list);
         dma_pool_free(phba->lpfc_sg_dma_buf_pool, sb->data,
                   sb->dma_handle);
         kfree(sb);
         phba->total_scsi_bufs--;
     }
     spin_unlock(&phba->scsi_buf_list_get_lock);
     spin_unlock_irq(&phba->hbalock);
 }
 
 /**
  * lpfc_io_free - Free all the IO buffers and IOCBs from driver lists
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is to free all the IO buffers and IOCBs from the driver
  * list back to kernel. It is called from lpfc_pci_remove_one to free
  * the internal resources before the device is removed from the system.
  **/
 void
 lpfc_io_free(struct lpfc_hba *phba)
 {
     struct lpfc_io_buf *lpfc_ncmd, *lpfc_ncmd_next;
     struct lpfc_sli4_hdw_queue *qp;
     int idx;
 
     for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
         qp = &phba->sli4_hba.hdwq[idx];
         /* Release all the lpfc_nvme_bufs maintained by this host. */
         spin_lock(&qp->io_buf_list_put_lock);
         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
                      &qp->lpfc_io_buf_list_put,
                      list) {
             list_del(&lpfc_ncmd->list);
             qp->put_io_bufs--;
             dma_pool_free(phba->lpfc_sg_dma_buf_pool,
                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
             if (phba->cfg_xpsgl && !phba->nvmet_support)
                 lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
             lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
             kfree(lpfc_ncmd);
             qp->total_io_bufs--;
         }
         spin_unlock(&qp->io_buf_list_put_lock);
 
         spin_lock(&qp->io_buf_list_get_lock);
         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
                      &qp->lpfc_io_buf_list_get,
                      list) {
             list_del(&lpfc_ncmd->list);
             qp->get_io_bufs--;
             dma_pool_free(phba->lpfc_sg_dma_buf_pool,
                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
             if (phba->cfg_xpsgl && !phba->nvmet_support)
                 lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
             lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
             kfree(lpfc_ncmd);
             qp->total_io_bufs--;
         }
         spin_unlock(&qp->io_buf_list_get_lock);
     }
 }
 
 /**
  * lpfc_sli4_els_sgl_update - update ELS xri-sgl sizing and mapping
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine first calculates the sizes of the current els and allocated
  * scsi sgl lists, and then goes through all sgls to updates the physical
  * XRIs assigned due to port function reset. During port initialization, the
  * current els and allocated scsi sgl lists are 0s.
  *
  * Return codes
  *   0 - successful (for now, it always returns 0)
  **/
 int
 lpfc_sli4_els_sgl_update(struct lpfc_hba *phba)
 {
     struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
     uint16_t i, lxri, xri_cnt, els_xri_cnt;
     LIST_HEAD(els_sgl_list);
     int rc;
 
     /*
      * update on pci function's els xri-sgl list
      */
     els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
 
     if (els_xri_cnt > phba->sli4_hba.els_xri_cnt) {
         /* els xri-sgl expanded */
         xri_cnt = els_xri_cnt - phba->sli4_hba.els_xri_cnt;
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "3157 ELS xri-sgl count increased from "
                 "%d to %d\n", phba->sli4_hba.els_xri_cnt,
                 els_xri_cnt);
         /* allocate the additional els sgls */
         for (i = 0; i < xri_cnt; i++) {
             sglq_entry = kzalloc(sizeof(struct lpfc_sglq),
                          GFP_KERNEL);
             if (sglq_entry == NULL) {
                 lpfc_printf_log(phba, KERN_ERR,
                         LOG_TRACE_EVENT,
                         "2562 Failure to allocate an "
                         "ELS sgl entry:%d\n", i);
                 rc = -ENOMEM;
                 goto out_free_mem;
             }
             sglq_entry->buff_type = GEN_BUFF_TYPE;
             sglq_entry->virt = lpfc_mbuf_alloc(phba, 0,
                                &sglq_entry->phys);
             if (sglq_entry->virt == NULL) {
                 kfree(sglq_entry);
                 lpfc_printf_log(phba, KERN_ERR,
                         LOG_TRACE_EVENT,
                         "2563 Failure to allocate an "
                         "ELS mbuf:%d\n", i);
                 rc = -ENOMEM;
                 goto out_free_mem;
             }
             sglq_entry->sgl = sglq_entry->virt;
             memset(sglq_entry->sgl, 0, LPFC_BPL_SIZE);
             sglq_entry->state = SGL_FREED;
             list_add_tail(&sglq_entry->list, &els_sgl_list);
         }
         spin_lock_irq(&phba->sli4_hba.sgl_list_lock);
         list_splice_init(&els_sgl_list,
                  &phba->sli4_hba.lpfc_els_sgl_list);
         spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
     } else if (els_xri_cnt < phba->sli4_hba.els_xri_cnt) {
         /* els xri-sgl shrinked */
         xri_cnt = phba->sli4_hba.els_xri_cnt - els_xri_cnt;
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "3158 ELS xri-sgl count decreased from "
                 "%d to %d\n", phba->sli4_hba.els_xri_cnt,
                 els_xri_cnt);
         spin_lock_irq(&phba->sli4_hba.sgl_list_lock);
         list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list,
                  &els_sgl_list);
         /* release extra els sgls from list */
         for (i = 0; i < xri_cnt; i++) {
             list_remove_head(&els_sgl_list,
                      sglq_entry, struct lpfc_sglq, list);
             if (sglq_entry) {
                 __lpfc_mbuf_free(phba, sglq_entry->virt,
                          sglq_entry->phys);
                 kfree(sglq_entry);
             }
         }
         list_splice_init(&els_sgl_list,
                  &phba->sli4_hba.lpfc_els_sgl_list);
         spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
     } else
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "3163 ELS xri-sgl count unchanged: %d\n",
                 els_xri_cnt);
     phba->sli4_hba.els_xri_cnt = els_xri_cnt;
 
     /* update xris to els sgls on the list */
     sglq_entry = NULL;
     sglq_entry_next = NULL;
     list_for_each_entry_safe(sglq_entry, sglq_entry_next,
                  &phba->sli4_hba.lpfc_els_sgl_list, list) {
         lxri = lpfc_sli4_next_xritag(phba);
         if (lxri == NO_XRI) {
             lpfc_printf_log(phba, KERN_ERR,
                     LOG_TRACE_EVENT,
                     "2400 Failed to allocate xri for "
                     "ELS sgl\n");
             rc = -ENOMEM;
             goto out_free_mem;
         }
         sglq_entry->sli4_lxritag = lxri;
         sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
     }
     return 0;
 
 out_free_mem:
     lpfc_free_els_sgl_list(phba);
     return rc;
 }
 
 /**
  * lpfc_sli4_nvmet_sgl_update - update xri-sgl sizing and mapping
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine first calculates the sizes of the current els and allocated
  * scsi sgl lists, and then goes through all sgls to updates the physical
  * XRIs assigned due to port function reset. During port initialization, the
  * current els and allocated scsi sgl lists are 0s.
  *
  * Return codes
  *   0 - successful (for now, it always returns 0)
  **/
 int
 lpfc_sli4_nvmet_sgl_update(struct lpfc_hba *phba)
 {
     struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
     uint16_t i, lxri, xri_cnt, els_xri_cnt;
     uint16_t nvmet_xri_cnt;
     LIST_HEAD(nvmet_sgl_list);
     int rc;
 
     /*
      * update on pci function's nvmet xri-sgl list
      */
     els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
 
     /* For NVMET, ALL remaining XRIs are dedicated for IO processing */
     nvmet_xri_cnt = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
     if (nvmet_xri_cnt > phba->sli4_hba.nvmet_xri_cnt) {
         /* els xri-sgl expanded */
         xri_cnt = nvmet_xri_cnt - phba->sli4_hba.nvmet_xri_cnt;
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "6302 NVMET xri-sgl cnt grew from %d to %d\n",
                 phba->sli4_hba.nvmet_xri_cnt, nvmet_xri_cnt);
         /* allocate the additional nvmet sgls */
         for (i = 0; i < xri_cnt; i++) {
             sglq_entry = kzalloc(sizeof(struct lpfc_sglq),
                          GFP_KERNEL);
             if (sglq_entry == NULL) {
                 lpfc_printf_log(phba, KERN_ERR,
                         LOG_TRACE_EVENT,
                         "6303 Failure to allocate an "
                         "NVMET sgl entry:%d\n", i);
                 rc = -ENOMEM;
                 goto out_free_mem;
             }
             sglq_entry->buff_type = NVMET_BUFF_TYPE;
             sglq_entry->virt = lpfc_nvmet_buf_alloc(phba, 0,
                                &sglq_entry->phys);
             if (sglq_entry->virt == NULL) {
                 kfree(sglq_entry);
                 lpfc_printf_log(phba, KERN_ERR,
                         LOG_TRACE_EVENT,
                         "6304 Failure to allocate an "
                         "NVMET buf:%d\n", i);
                 rc = -ENOMEM;
                 goto out_free_mem;
             }
             sglq_entry->sgl = sglq_entry->virt;
             memset(sglq_entry->sgl, 0,
                    phba->cfg_sg_dma_buf_size);
             sglq_entry->state = SGL_FREED;
             list_add_tail(&sglq_entry->list, &nvmet_sgl_list);
         }
         spin_lock_irq(&phba->hbalock);
         spin_lock(&phba->sli4_hba.sgl_list_lock);
         list_splice_init(&nvmet_sgl_list,
                  &phba->sli4_hba.lpfc_nvmet_sgl_list);
         spin_unlock(&phba->sli4_hba.sgl_list_lock);
         spin_unlock_irq(&phba->hbalock);
     } else if (nvmet_xri_cnt < phba->sli4_hba.nvmet_xri_cnt) {
         /* nvmet xri-sgl shrunk */
         xri_cnt = phba->sli4_hba.nvmet_xri_cnt - nvmet_xri_cnt;
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "6305 NVMET xri-sgl count decreased from "
                 "%d to %d\n", phba->sli4_hba.nvmet_xri_cnt,
                 nvmet_xri_cnt);
         spin_lock_irq(&phba->hbalock);
         spin_lock(&phba->sli4_hba.sgl_list_lock);
         list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list,
                  &nvmet_sgl_list);
         /* release extra nvmet sgls from list */
         for (i = 0; i < xri_cnt; i++) {
             list_remove_head(&nvmet_sgl_list,
                      sglq_entry, struct lpfc_sglq, list);
             if (sglq_entry) {
                 lpfc_nvmet_buf_free(phba, sglq_entry->virt,
                             sglq_entry->phys);
                 kfree(sglq_entry);
             }
         }
         list_splice_init(&nvmet_sgl_list,
                  &phba->sli4_hba.lpfc_nvmet_sgl_list);
         spin_unlock(&phba->sli4_hba.sgl_list_lock);
         spin_unlock_irq(&phba->hbalock);
     } else
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "6306 NVMET xri-sgl count unchanged: %d\n",
                 nvmet_xri_cnt);
     phba->sli4_hba.nvmet_xri_cnt = nvmet_xri_cnt;
 
     /* update xris to nvmet sgls on the list */
     sglq_entry = NULL;
     sglq_entry_next = NULL;
     list_for_each_entry_safe(sglq_entry, sglq_entry_next,
                  &phba->sli4_hba.lpfc_nvmet_sgl_list, list) {
         lxri = lpfc_sli4_next_xritag(phba);
         if (lxri == NO_XRI) {
             lpfc_printf_log(phba, KERN_ERR,
                     LOG_TRACE_EVENT,
                     "6307 Failed to allocate xri for "
                     "NVMET sgl\n");
             rc = -ENOMEM;
             goto out_free_mem;
         }
         sglq_entry->sli4_lxritag = lxri;
         sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
     }
     return 0;
 
 out_free_mem:
     lpfc_free_nvmet_sgl_list(phba);
     return rc;
 }
 
 int
 lpfc_io_buf_flush(struct lpfc_hba *phba, struct list_head *cbuf)
 {
     LIST_HEAD(blist);
     struct lpfc_sli4_hdw_queue *qp;
     struct lpfc_io_buf *lpfc_cmd;
     struct lpfc_io_buf *iobufp, *prev_iobufp;
     int idx, cnt, xri, inserted;
 
     cnt = 0;
     for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
         qp = &phba->sli4_hba.hdwq[idx];
         spin_lock_irq(&qp->io_buf_list_get_lock);
         spin_lock(&qp->io_buf_list_put_lock);
 
         /* Take everything off the get and put lists */
         list_splice_init(&qp->lpfc_io_buf_list_get, &blist);
         list_splice(&qp->lpfc_io_buf_list_put, &blist);
         INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);
         INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
         cnt += qp->get_io_bufs + qp->put_io_bufs;
         qp->get_io_bufs = 0;
         qp->put_io_bufs = 0;
         qp->total_io_bufs = 0;
         spin_unlock(&qp->io_buf_list_put_lock);
         spin_unlock_irq(&qp->io_buf_list_get_lock);
     }
 
     /*
      * Take IO buffers off blist and put on cbuf sorted by XRI.
      * This is because POST_SGL takes a sequential range of XRIs
      * to post to the firmware.
      */
     for (idx = 0; idx < cnt; idx++) {
         list_remove_head(&blist, lpfc_cmd, struct lpfc_io_buf, list);
         if (!lpfc_cmd)
             return cnt;
         if (idx == 0) {
             list_add_tail(&lpfc_cmd->list, cbuf);
             continue;
         }
         xri = lpfc_cmd->cur_iocbq.sli4_xritag;
         inserted = 0;
         prev_iobufp = NULL;
         list_for_each_entry(iobufp, cbuf, list) {
             if (xri < iobufp->cur_iocbq.sli4_xritag) {
                 if (prev_iobufp)
                     list_add(&lpfc_cmd->list,
                          &prev_iobufp->list);
                 else
                     list_add(&lpfc_cmd->list, cbuf);
                 inserted = 1;
                 break;
             }
             prev_iobufp = iobufp;
         }
         if (!inserted)
             list_add_tail(&lpfc_cmd->list, cbuf);
     }
     return cnt;
 }
 
 int
 lpfc_io_buf_replenish(struct lpfc_hba *phba, struct list_head *cbuf)
 {
     struct lpfc_sli4_hdw_queue *qp;
     struct lpfc_io_buf *lpfc_cmd;
     int idx, cnt;
 
     qp = phba->sli4_hba.hdwq;
     cnt = 0;
     while (!list_empty(cbuf)) {
         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
             list_remove_head(cbuf, lpfc_cmd,
                      struct lpfc_io_buf, list);
             if (!lpfc_cmd)
                 return cnt;
             cnt++;
             qp = &phba->sli4_hba.hdwq[idx];
             lpfc_cmd->hdwq_no = idx;
             lpfc_cmd->hdwq = qp;
             lpfc_cmd->cur_iocbq.cmd_cmpl = NULL;
             spin_lock(&qp->io_buf_list_put_lock);
             list_add_tail(&lpfc_cmd->list,
                       &qp->lpfc_io_buf_list_put);
             qp->put_io_bufs++;
             qp->total_io_bufs++;
             spin_unlock(&qp->io_buf_list_put_lock);
         }
     }
     return cnt;
 }
 
 /**
  * lpfc_sli4_io_sgl_update - update xri-sgl sizing and mapping
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine first calculates the sizes of the current els and allocated
  * scsi sgl lists, and then goes through all sgls to updates the physical
  * XRIs assigned due to port function reset. During port initialization, the
  * current els and allocated scsi sgl lists are 0s.
  *
  * Return codes
  *   0 - successful (for now, it always returns 0)
  **/
 int
 lpfc_sli4_io_sgl_update(struct lpfc_hba *phba)
 {
     struct lpfc_io_buf *lpfc_ncmd = NULL, *lpfc_ncmd_next = NULL;
     uint16_t i, lxri, els_xri_cnt;
     uint16_t io_xri_cnt, io_xri_max;
     LIST_HEAD(io_sgl_list);
     int rc, cnt;
 
     /*
      * update on pci function's allocated nvme xri-sgl list
      */
 
     /* maximum number of xris available for nvme buffers */
     els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
     io_xri_max = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
     phba->sli4_hba.io_xri_max = io_xri_max;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
             "6074 Current allocated XRI sgl count:%d, "
             "maximum XRI count:%d els_xri_cnt:%d\n\n",
             phba->sli4_hba.io_xri_cnt,
             phba->sli4_hba.io_xri_max,
             els_xri_cnt);
 
     cnt = lpfc_io_buf_flush(phba, &io_sgl_list);
 
     if (phba->sli4_hba.io_xri_cnt > phba->sli4_hba.io_xri_max) {
         /* max nvme xri shrunk below the allocated nvme buffers */
         io_xri_cnt = phba->sli4_hba.io_xri_cnt -
                     phba->sli4_hba.io_xri_max;
         /* release the extra allocated nvme buffers */
         for (i = 0; i < io_xri_cnt; i++) {
             list_remove_head(&io_sgl_list, lpfc_ncmd,
                      struct lpfc_io_buf, list);
             if (lpfc_ncmd) {
                 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
                           lpfc_ncmd->data,
                           lpfc_ncmd->dma_handle);
                 kfree(lpfc_ncmd);
             }
         }
         phba->sli4_hba.io_xri_cnt -= io_xri_cnt;
     }
 
     /* update xris associated to remaining allocated nvme buffers */
     lpfc_ncmd = NULL;
     lpfc_ncmd_next = NULL;
     phba->sli4_hba.io_xri_cnt = cnt;
     list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
                  &io_sgl_list, list) {
         lxri = lpfc_sli4_next_xritag(phba);
         if (lxri == NO_XRI) {
             lpfc_printf_log(phba, KERN_ERR,
                     LOG_TRACE_EVENT,
                     "6075 Failed to allocate xri for "
                     "nvme buffer\n");
             rc = -ENOMEM;
             goto out_free_mem;
         }
         lpfc_ncmd->cur_iocbq.sli4_lxritag = lxri;
         lpfc_ncmd->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri];
     }
     cnt = lpfc_io_buf_replenish(phba, &io_sgl_list);
     return 0;
 
 out_free_mem:
     lpfc_io_free(phba);
     return rc;
 }
 
 /**
  * lpfc_new_io_buf - IO buffer allocator for HBA with SLI4 IF spec
  * @phba: Pointer to lpfc hba data structure.
  * @num_to_alloc: The requested number of buffers to allocate.
  *
  * This routine allocates nvme buffers for device with SLI-4 interface spec,
  * the nvme buffer contains all the necessary information needed to initiate
  * an I/O. After allocating up to @num_to_allocate IO buffers and put
  * them on a list, it post them to the port by using SGL block post.
  *
  * Return codes:
  *   int - number of IO buffers that were allocated and posted.
  *   0 = failure, less than num_to_alloc is a partial failure.
  **/
 int
 lpfc_new_io_buf(struct lpfc_hba *phba, int num_to_alloc)
 {
     struct lpfc_io_buf *lpfc_ncmd;
     struct lpfc_iocbq *pwqeq;
     uint16_t iotag, lxri = 0;
     int bcnt, num_posted;
     LIST_HEAD(prep_nblist);
     LIST_HEAD(post_nblist);
     LIST_HEAD(nvme_nblist);
 
     phba->sli4_hba.io_xri_cnt = 0;
     for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
         lpfc_ncmd = kzalloc(sizeof(*lpfc_ncmd), GFP_KERNEL);
         if (!lpfc_ncmd)
             break;
         /*
          * Get memory from the pci pool to map the virt space to
          * pci bus space for an I/O. The DMA buffer includes the
          * number of SGE's necessary to support the sg_tablesize.
          */
         lpfc_ncmd->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool,
                           GFP_KERNEL,
                           &lpfc_ncmd->dma_handle);
         if (!lpfc_ncmd->data) {
             kfree(lpfc_ncmd);
             break;
         }
 
         if (phba->cfg_xpsgl && !phba->nvmet_support) {
             INIT_LIST_HEAD(&lpfc_ncmd->dma_sgl_xtra_list);
         } else {
             /*
              * 4K Page alignment is CRITICAL to BlockGuard, double
              * check to be sure.
              */
             if ((phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
                 (((unsigned long)(lpfc_ncmd->data) &
                 (unsigned long)(SLI4_PAGE_SIZE - 1)) != 0)) {
                 lpfc_printf_log(phba, KERN_ERR,
                         LOG_TRACE_EVENT,
                         "3369 Memory alignment err: "
                         "addr=%lx\n",
                         (unsigned long)lpfc_ncmd->data);
                 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
                           lpfc_ncmd->data,
                           lpfc_ncmd->dma_handle);
                 kfree(lpfc_ncmd);
                 break;
             }
         }
 
         INIT_LIST_HEAD(&lpfc_ncmd->dma_cmd_rsp_list);
 
         lxri = lpfc_sli4_next_xritag(phba);
         if (lxri == NO_XRI) {
             dma_pool_free(phba->lpfc_sg_dma_buf_pool,
                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
             kfree(lpfc_ncmd);
             break;
         }
         pwqeq = &lpfc_ncmd->cur_iocbq;
 
         /* Allocate iotag for lpfc_ncmd->cur_iocbq. */
         iotag = lpfc_sli_next_iotag(phba, pwqeq);
         if (iotag == 0) {
             dma_pool_free(phba->lpfc_sg_dma_buf_pool,
                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
             kfree(lpfc_ncmd);
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "6121 Failed to allocate IOTAG for"
                     " XRI:0x%x\n", lxri);
             lpfc_sli4_free_xri(phba, lxri);
             break;
         }
         pwqeq->sli4_lxritag = lxri;
         pwqeq->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
 
         /* Initialize local short-hand pointers. */
         lpfc_ncmd->dma_sgl = lpfc_ncmd->data;
         lpfc_ncmd->dma_phys_sgl = lpfc_ncmd->dma_handle;
         lpfc_ncmd->cur_iocbq.io_buf = lpfc_ncmd;
         spin_lock_init(&lpfc_ncmd->buf_lock);
 
         /* add the nvme buffer to a post list */
         list_add_tail(&lpfc_ncmd->list, &post_nblist);
         phba->sli4_hba.io_xri_cnt++;
     }
     lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
             "6114 Allocate %d out of %d requested new NVME "
             "buffers of size x%zu bytes\n", bcnt, num_to_alloc,
             sizeof(*lpfc_ncmd));
 
 
     /* 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, bcnt);
     else
         num_posted = 0;
 
     return num_posted;
 }
 
 static uint64_t
 lpfc_get_wwpn(struct lpfc_hba *phba)
 {
     uint64_t wwn;
     int rc;
     LPFC_MBOXQ_t *mboxq;
     MAILBOX_t *mb;
 
     mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
                         GFP_KERNEL);
     if (!mboxq)
         return (uint64_t)-1;
 
     /* First get WWN of HBA instance */
     lpfc_read_nv(phba, mboxq);
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
     if (rc != MBX_SUCCESS) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "6019 Mailbox failed , mbxCmd x%x "
                 "READ_NV, mbxStatus x%x\n",
                 bf_get(lpfc_mqe_command, &mboxq->u.mqe),
                 bf_get(lpfc_mqe_status, &mboxq->u.mqe));
         mempool_free(mboxq, phba->mbox_mem_pool);
         return (uint64_t) -1;
     }
     mb = &mboxq->u.mb;
     memcpy(&wwn, (char *)mb->un.varRDnvp.portname, sizeof(uint64_t));
     /* wwn is WWPN of HBA instance */
     mempool_free(mboxq, phba->mbox_mem_pool);
     if (phba->sli_rev == LPFC_SLI_REV4)
         return be64_to_cpu(wwn);
     else
         return rol64(wwn, 32);
 }
 
 /**
  * lpfc_vmid_res_alloc - Allocates resources for VMID
  * @phba: pointer to lpfc hba data structure.
  * @vport: pointer to vport data structure
  *
  * This routine allocated the resources needed for the VMID.
  *
  * Return codes
  *  0 on Success
  *  Non-0 on Failure
  */
 static int
 lpfc_vmid_res_alloc(struct lpfc_hba *phba, struct lpfc_vport *vport)
 {
     /* VMID feature is supported only on SLI4 */
     if (phba->sli_rev == LPFC_SLI_REV3) {
         phba->cfg_vmid_app_header = 0;
         phba->cfg_vmid_priority_tagging = 0;
     }
 
     if (lpfc_is_vmid_enabled(phba)) {
         vport->vmid =
             kcalloc(phba->cfg_max_vmid, sizeof(struct lpfc_vmid),
                 GFP_KERNEL);
         if (!vport->vmid)
             return -ENOMEM;
 
         rwlock_init(&vport->vmid_lock);
 
         /* Set the VMID parameters for the vport */
         vport->vmid_priority_tagging = phba->cfg_vmid_priority_tagging;
         vport->vmid_inactivity_timeout =
             phba->cfg_vmid_inactivity_timeout;
         vport->max_vmid = phba->cfg_max_vmid;
         vport->cur_vmid_cnt = 0;
 
         vport->vmid_priority_range = bitmap_zalloc
             (LPFC_VMID_MAX_PRIORITY_RANGE, GFP_KERNEL);
 
         if (!vport->vmid_priority_range) {
             kfree(vport->vmid);
             return -ENOMEM;
         }
 
         hash_init(vport->hash_table);
     }
     return 0;
 }
 
 /**
  * lpfc_create_port - Create an FC port
  * @phba: pointer to lpfc hba data structure.
  * @instance: a unique integer ID to this FC port.
  * @dev: pointer to the device data structure.
  *
  * This routine creates a FC port for the upper layer protocol. The FC port
  * can be created on top of either a physical port or a virtual port provided
  * by the HBA. This routine also allocates a SCSI host data structure (shost)
  * and associates the FC port created before adding the shost into the SCSI
  * layer.
  *
  * Return codes
  *   @vport - pointer to the virtual N_Port data structure.
  *   NULL - port create failed.
  **/
 struct lpfc_vport *
 lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
 {
     struct lpfc_vport *vport;
     struct Scsi_Host  *shost = NULL;
     struct scsi_host_template *template;
     int error = 0;
     int i;
     uint64_t wwn;
     bool use_no_reset_hba = false;
     int rc;
 
     if (lpfc_no_hba_reset_cnt) {
         if (phba->sli_rev < LPFC_SLI_REV4 &&
             dev == &phba->pcidev->dev) {
             /* Reset the port first */
             lpfc_sli_brdrestart(phba);
             rc = lpfc_sli_chipset_init(phba);
             if (rc)
                 return NULL;
         }
         wwn = lpfc_get_wwpn(phba);
     }
 
     for (i = 0; i < lpfc_no_hba_reset_cnt; i++) {
         if (wwn == lpfc_no_hba_reset[i]) {
             lpfc_printf_log(phba, KERN_ERR,
                     LOG_TRACE_EVENT,
                     "6020 Setting use_no_reset port=%llx\n",
                     wwn);
             use_no_reset_hba = true;
             break;
         }
     }
 
     /* Seed template for SCSI host registration */
     if (dev == &phba->pcidev->dev) {
         template = &phba->port_template;
 
         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) {
             /* Seed physical port template */
             memcpy(template, &lpfc_template, sizeof(*template));
 
             if (use_no_reset_hba)
                 /* template is for a no reset SCSI Host */
                 template->eh_host_reset_handler = NULL;
 
             /* Template for all vports this physical port creates */
             memcpy(&phba->vport_template, &lpfc_template,
                    sizeof(*template));
             phba->vport_template.shost_groups = lpfc_vport_groups;
             phba->vport_template.eh_bus_reset_handler = NULL;
             phba->vport_template.eh_host_reset_handler = NULL;
             phba->vport_template.vendor_id = 0;
 
             /* Initialize the host templates with updated value */
             if (phba->sli_rev == LPFC_SLI_REV4) {
                 template->sg_tablesize = phba->cfg_scsi_seg_cnt;
                 phba->vport_template.sg_tablesize =
                     phba->cfg_scsi_seg_cnt;
             } else {
                 template->sg_tablesize = phba->cfg_sg_seg_cnt;
                 phba->vport_template.sg_tablesize =
                     phba->cfg_sg_seg_cnt;
             }
 
         } else {
             /* NVMET is for physical port only */
             memcpy(template, &lpfc_template_nvme,
                    sizeof(*template));
         }
     } else {
         template = &phba->vport_template;
     }
 
     shost = scsi_host_alloc(template, sizeof(struct lpfc_vport));
     if (!shost)
         goto out;
 
     vport = (struct lpfc_vport *) shost->hostdata;
     vport->phba = phba;
     vport->load_flag |= FC_LOADING;
     vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
     vport->fc_rscn_flush = 0;
     lpfc_get_vport_cfgparam(vport);
 
     /* Adjust value in vport */
     vport->cfg_enable_fc4_type = phba->cfg_enable_fc4_type;
 
     shost->unique_id = instance;
     shost->max_id = LPFC_MAX_TARGET;
     shost->max_lun = vport->cfg_max_luns;
     shost->this_id = -1;
     shost->max_cmd_len = 16;
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         if (!phba->cfg_fcp_mq_threshold ||
             phba->cfg_fcp_mq_threshold > phba->cfg_hdw_queue)
             phba->cfg_fcp_mq_threshold = phba->cfg_hdw_queue;
 
         shost->nr_hw_queues = min_t(int, 2 * num_possible_nodes(),
                         phba->cfg_fcp_mq_threshold);
 
         shost->dma_boundary =
             phba->sli4_hba.pc_sli4_params.sge_supp_len-1;
 
         if (phba->cfg_xpsgl && !phba->nvmet_support)
             shost->sg_tablesize = LPFC_MAX_SG_TABLESIZE;
         else
             shost->sg_tablesize = phba->cfg_scsi_seg_cnt;
     } else
         /* SLI-3 has a limited number of hardware queues (3),
          * thus there is only one for FCP processing.
          */
         shost->nr_hw_queues = 1;
 
     /*
      * Set initial can_queue value since 0 is no longer supported and
      * scsi_add_host will fail. This will be adjusted later based on the
      * max xri value determined in hba setup.
      */
     shost->can_queue = phba->cfg_hba_queue_depth - 10;
     if (dev != &phba->pcidev->dev) {
         shost->transportt = lpfc_vport_transport_template;
         vport->port_type = LPFC_NPIV_PORT;
     } else {
         shost->transportt = lpfc_transport_template;
         vport->port_type = LPFC_PHYSICAL_PORT;
     }
 
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
             "9081 CreatePort TMPLATE type %x TBLsize %d "
             "SEGcnt %d/%d\n",
             vport->port_type, shost->sg_tablesize,
             phba->cfg_scsi_seg_cnt, phba->cfg_sg_seg_cnt);
 
     /* Allocate the resources for VMID */
     rc = lpfc_vmid_res_alloc(phba, vport);
 
     if (rc)
         goto out;
 
     /* Initialize all internally managed lists. */
     INIT_LIST_HEAD(&vport->fc_nodes);
     INIT_LIST_HEAD(&vport->rcv_buffer_list);
     spin_lock_init(&vport->work_port_lock);
 
     timer_setup(&vport->fc_disctmo, lpfc_disc_timeout, 0);
 
     timer_setup(&vport->els_tmofunc, lpfc_els_timeout, 0);
 
     timer_setup(&vport->delayed_disc_tmo, lpfc_delayed_disc_tmo, 0);
 
     if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
         lpfc_setup_bg(phba, shost);
 
     error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev);
     if (error)
         goto out_put_shost;
 
     spin_lock_irq(&phba->port_list_lock);
     list_add_tail(&vport->listentry, &phba->port_list);
     spin_unlock_irq(&phba->port_list_lock);
     return vport;
 
 out_put_shost:
     kfree(vport->vmid);
     bitmap_free(vport->vmid_priority_range);
     scsi_host_put(shost);
 out:
     return NULL;
 }
 
 /**
  * destroy_port -  destroy an FC port
  * @vport: pointer to an lpfc virtual N_Port data structure.
  *
  * This routine destroys a FC port from the upper layer protocol. All the
  * resources associated with the port are released.
  **/
 void
 destroy_port(struct lpfc_vport *vport)
 {
     struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
     struct lpfc_hba  *phba = vport->phba;
 
     lpfc_debugfs_terminate(vport);
     fc_remove_host(shost);
     scsi_remove_host(shost);
 
     spin_lock_irq(&phba->port_list_lock);
     list_del_init(&vport->listentry);
     spin_unlock_irq(&phba->port_list_lock);
 
     lpfc_cleanup(vport);
     return;
 }
 
 /**
  * lpfc_get_instance - Get a unique integer ID
  *
  * This routine allocates a unique integer ID from lpfc_hba_index pool. It
  * uses the kernel idr facility to perform the task.
  *
  * Return codes:
  *   instance - a unique integer ID allocated as the new instance.
  *   -1 - lpfc get instance failed.
  **/
 int
 lpfc_get_instance(void)
 {
     int ret;
 
     ret = idr_alloc(&lpfc_hba_index, NULL, 0, 0, GFP_KERNEL);
     return ret < 0 ? -1 : ret;
 }
 
 /**
  * lpfc_scan_finished - method for SCSI layer to detect whether scan is done
  * @shost: pointer to SCSI host data structure.
  * @time: elapsed time of the scan in jiffies.
  *
  * This routine is called by the SCSI layer with a SCSI host to determine
  * whether the scan host is finished.
  *
  * Note: there is no scan_start function as adapter initialization will have
  * asynchronously kicked off the link initialization.
  *
  * Return codes
  *   0 - SCSI host scan is not over yet.
  *   1 - SCSI host scan is over.
  **/
 int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
 {
     struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
     struct lpfc_hba   *phba = vport->phba;
     int stat = 0;
 
     spin_lock_irq(shost->host_lock);
 
     if (vport->load_flag & FC_UNLOADING) {
         stat = 1;
         goto finished;
     }
     if (time >= msecs_to_jiffies(30 * 1000)) {
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "0461 Scanning longer than 30 "
                 "seconds.  Continuing initialization\n");
         stat = 1;
         goto finished;
     }
     if (time >= msecs_to_jiffies(15 * 1000) &&
         phba->link_state <= LPFC_LINK_DOWN) {
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "0465 Link down longer than 15 "
                 "seconds.  Continuing initialization\n");
         stat = 1;
         goto finished;
     }
 
     if (vport->port_state != LPFC_VPORT_READY)
         goto finished;
     if (vport->num_disc_nodes || vport->fc_prli_sent)
         goto finished;
     if (vport->fc_map_cnt == 0 && time < msecs_to_jiffies(2 * 1000))
         goto finished;
     if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0)
         goto finished;
 
     stat = 1;
 
 finished:
     spin_unlock_irq(shost->host_lock);
     return stat;
 }
 
 static void lpfc_host_supported_speeds_set(struct Scsi_Host *shost)
 {
     struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
     struct lpfc_hba   *phba = vport->phba;
 
     fc_host_supported_speeds(shost) = 0;
     /*
      * Avoid reporting supported link speed for FCoE as it can't be
      * controlled via FCoE.
      */
     if (phba->hba_flag & HBA_FCOE_MODE)
         return;
 
     if (phba->lmt & LMT_256Gb)
         fc_host_supported_speeds(shost) |= FC_PORTSPEED_256GBIT;
     if (phba->lmt & LMT_128Gb)
         fc_host_supported_speeds(shost) |= FC_PORTSPEED_128GBIT;
     if (phba->lmt & LMT_64Gb)
         fc_host_supported_speeds(shost) |= FC_PORTSPEED_64GBIT;
     if (phba->lmt & LMT_32Gb)
         fc_host_supported_speeds(shost) |= FC_PORTSPEED_32GBIT;
     if (phba->lmt & LMT_16Gb)
         fc_host_supported_speeds(shost) |= FC_PORTSPEED_16GBIT;
     if (phba->lmt & LMT_10Gb)
         fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
     if (phba->lmt & LMT_8Gb)
         fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
     if (phba->lmt & LMT_4Gb)
         fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
     if (phba->lmt & LMT_2Gb)
         fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT;
     if (phba->lmt & LMT_1Gb)
         fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT;
 }
 
 /**
  * lpfc_host_attrib_init - Initialize SCSI host attributes on a FC port
  * @shost: pointer to SCSI host data structure.
  *
  * This routine initializes a given SCSI host attributes on a FC port. The
  * SCSI host can be either on top of a physical port or a virtual port.
  **/
 void lpfc_host_attrib_init(struct Scsi_Host *shost)
 {
     struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
     struct lpfc_hba   *phba = vport->phba;
     /*
      * Set fixed host attributes.  Must done after lpfc_sli_hba_setup().
      */
 
     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);
     fc_host_supported_classes(shost) = FC_COS_CLASS3;
 
     memset(fc_host_supported_fc4s(shost), 0,
            sizeof(fc_host_supported_fc4s(shost)));
     fc_host_supported_fc4s(shost)[2] = 1;
     fc_host_supported_fc4s(shost)[7] = 1;
 
     lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
                  sizeof fc_host_symbolic_name(shost));
 
     lpfc_host_supported_speeds_set(shost);
 
     fc_host_maxframe_size(shost) =
         (((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
         (uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;
 
     fc_host_dev_loss_tmo(shost) = vport->cfg_devloss_tmo;
 
     /* This value is also unchanging */
     memset(fc_host_active_fc4s(shost), 0,
            sizeof(fc_host_active_fc4s(shost)));
     fc_host_active_fc4s(shost)[2] = 1;
     fc_host_active_fc4s(shost)[7] = 1;
 
     fc_host_max_npiv_vports(shost) = phba->max_vpi;
     spin_lock_irq(shost->host_lock);
     vport->load_flag &= ~FC_LOADING;
     spin_unlock_irq(shost->host_lock);
 }
 
 /**
  * lpfc_stop_port_s3 - Stop SLI3 device port
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to stop an SLI3 device port, it stops the device
  * from generating interrupts and stops the device driver's timers for the
  * device.
  **/
 static void
 lpfc_stop_port_s3(struct lpfc_hba *phba)
 {
     /* Clear all interrupt enable conditions */
     writel(0, phba->HCregaddr);
     readl(phba->HCregaddr); /* flush */
     /* Clear all pending interrupts */
     writel(0xffffffff, phba->HAregaddr);
     readl(phba->HAregaddr); /* flush */
 
     /* Reset some HBA SLI setup states */
     lpfc_stop_hba_timers(phba);
     phba->pport->work_port_events = 0;
 }
 
 /**
  * lpfc_stop_port_s4 - Stop SLI4 device port
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to stop an SLI4 device port, it stops the device
  * from generating interrupts and stops the device driver's timers for the
  * device.
  **/
 static void
 lpfc_stop_port_s4(struct lpfc_hba *phba)
 {
     /* Reset some HBA SLI4 setup states */
     lpfc_stop_hba_timers(phba);
     if (phba->pport)
         phba->pport->work_port_events = 0;
     phba->sli4_hba.intr_enable = 0;
 }
 
 /**
  * lpfc_stop_port - Wrapper function for stopping hba port
  * @phba: Pointer to HBA context object.
  *
  * This routine wraps the actual SLI3 or SLI4 hba stop port routine from
  * the API jump table function pointer from the lpfc_hba struct.
  **/
 void
 lpfc_stop_port(struct lpfc_hba *phba)
 {
     phba->lpfc_stop_port(phba);
 
     if (phba->wq)
         flush_workqueue(phba->wq);
 }
 
 /**
  * lpfc_fcf_redisc_wait_start_timer - Start fcf rediscover wait timer
  * @phba: Pointer to hba for which this call is being executed.
  *
  * This routine starts the timer waiting for the FCF rediscovery to complete.
  **/
 void
 lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *phba)
 {
     unsigned long fcf_redisc_wait_tmo =
         (jiffies + msecs_to_jiffies(LPFC_FCF_REDISCOVER_WAIT_TMO));
     /* Start fcf rediscovery wait period timer */
     mod_timer(&phba->fcf.redisc_wait, fcf_redisc_wait_tmo);
     spin_lock_irq(&phba->hbalock);
     /* Allow action to new fcf asynchronous event */
     phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
     /* Mark the FCF rediscovery pending state */
     phba->fcf.fcf_flag |= FCF_REDISC_PEND;
     spin_unlock_irq(&phba->hbalock);
 }
 
 /**
  * lpfc_sli4_fcf_redisc_wait_tmo - FCF table rediscover wait timeout
  * @t: Timer context used to obtain the pointer to lpfc hba data structure.
  *
  * This routine is invoked when waiting for FCF table rediscover has been
  * timed out. If new FCF record(s) has (have) been discovered during the
  * wait period, a new FCF event shall be added to the FCOE async event
  * list, and then worker thread shall be waked up for processing from the
  * worker thread context.
  **/
 static void
 lpfc_sli4_fcf_redisc_wait_tmo(struct timer_list *t)
 {
     struct lpfc_hba *phba = from_timer(phba, t, fcf.redisc_wait);
 
     /* Don't send FCF rediscovery event if timer cancelled */
     spin_lock_irq(&phba->hbalock);
     if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
         spin_unlock_irq(&phba->hbalock);
         return;
     }
     /* Clear FCF rediscovery timer pending flag */
     phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
     /* FCF rediscovery event to worker thread */
     phba->fcf.fcf_flag |= FCF_REDISC_EVT;
     spin_unlock_irq(&phba->hbalock);
     lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
             "2776 FCF rediscover quiescent timer expired\n");
     /* wake up worker thread */
     lpfc_worker_wake_up(phba);
 }
 
 /**
  * lpfc_vmid_poll - VMID timeout detection
  * @t: Timer context used to obtain the pointer to lpfc hba data structure.
  *
  * This routine is invoked when there is no I/O on by a VM for the specified
  * amount of time. When this situation is detected, the VMID has to be
  * deregistered from the switch and all the local resources freed. The VMID
  * will be reassigned to the VM once the I/O begins.
  **/
 static void
 lpfc_vmid_poll(struct timer_list *t)
 {
     struct lpfc_hba *phba = from_timer(phba, t, inactive_vmid_poll);
     u32 wake_up = 0;
 
     /* check if there is a need to issue QFPA */
     if (phba->pport->vmid_priority_tagging) {
         wake_up = 1;
         phba->pport->work_port_events |= WORKER_CHECK_VMID_ISSUE_QFPA;
     }
 
     /* Is the vmid inactivity timer enabled */
     if (phba->pport->vmid_inactivity_timeout ||
         phba->pport->load_flag & FC_DEREGISTER_ALL_APP_ID) {
         wake_up = 1;
         phba->pport->work_port_events |= WORKER_CHECK_INACTIVE_VMID;
     }
 
     if (wake_up)
         lpfc_worker_wake_up(phba);
 
     /* restart the timer for the next iteration */
     mod_timer(&phba->inactive_vmid_poll, jiffies + msecs_to_jiffies(1000 *
                             LPFC_VMID_TIMER));
 }
 
 /**
  * lpfc_sli4_parse_latt_fault - Parse sli4 link-attention link fault code
  * @phba: pointer to lpfc hba data structure.
  * @acqe_link: pointer to the async link completion queue entry.
  *
  * This routine is to parse the SLI4 link-attention link fault code.
  **/
 static void
 lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba,
                struct lpfc_acqe_link *acqe_link)
 {
     switch (bf_get(lpfc_acqe_link_fault, acqe_link)) {
     case LPFC_ASYNC_LINK_FAULT_NONE:
     case LPFC_ASYNC_LINK_FAULT_LOCAL:
     case LPFC_ASYNC_LINK_FAULT_REMOTE:
     case LPFC_ASYNC_LINK_FAULT_LR_LRR:
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0398 Unknown link fault code: x%x\n",
                 bf_get(lpfc_acqe_link_fault, acqe_link));
         break;
     }
 }
 
 /**
  * lpfc_sli4_parse_latt_type - Parse sli4 link attention type
  * @phba: pointer to lpfc hba data structure.
  * @acqe_link: pointer to the async link completion queue entry.
  *
  * This routine is to parse the SLI4 link attention type and translate it
  * into the base driver's link attention type coding.
  *
  * Return: Link attention type in terms of base driver's coding.
  **/
 static uint8_t
 lpfc_sli4_parse_latt_type(struct lpfc_hba *phba,
               struct lpfc_acqe_link *acqe_link)
 {
     uint8_t att_type;
 
     switch (bf_get(lpfc_acqe_link_status, acqe_link)) {
     case LPFC_ASYNC_LINK_STATUS_DOWN:
     case LPFC_ASYNC_LINK_STATUS_LOGICAL_DOWN:
         att_type = LPFC_ATT_LINK_DOWN;
         break;
     case LPFC_ASYNC_LINK_STATUS_UP:
         /* Ignore physical link up events - wait for logical link up */
         att_type = LPFC_ATT_RESERVED;
         break;
     case LPFC_ASYNC_LINK_STATUS_LOGICAL_UP:
         att_type = LPFC_ATT_LINK_UP;
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0399 Invalid link attention type: x%x\n",
                 bf_get(lpfc_acqe_link_status, acqe_link));
         att_type = LPFC_ATT_RESERVED;
         break;
     }
     return att_type;
 }
 
 /**
  * lpfc_sli_port_speed_get - Get sli3 link speed code to link speed
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is to get an SLI3 FC port's link speed in Mbps.
  *
  * Return: link speed in terms of Mbps.
  **/
 uint32_t
 lpfc_sli_port_speed_get(struct lpfc_hba *phba)
 {
     uint32_t link_speed;
 
     if (!lpfc_is_link_up(phba))
         return 0;
 
     if (phba->sli_rev <= LPFC_SLI_REV3) {
         switch (phba->fc_linkspeed) {
         case LPFC_LINK_SPEED_1GHZ:
             link_speed = 1000;
             break;
         case LPFC_LINK_SPEED_2GHZ:
             link_speed = 2000;
             break;
         case LPFC_LINK_SPEED_4GHZ:
             link_speed = 4000;
             break;
         case LPFC_LINK_SPEED_8GHZ:
             link_speed = 8000;
             break;
         case LPFC_LINK_SPEED_10GHZ:
             link_speed = 10000;
             break;
         case LPFC_LINK_SPEED_16GHZ:
             link_speed = 16000;
             break;
         default:
             link_speed = 0;
         }
     } else {
         if (phba->sli4_hba.link_state.logical_speed)
             link_speed =
                   phba->sli4_hba.link_state.logical_speed;
         else
             link_speed = phba->sli4_hba.link_state.speed;
     }
     return link_speed;
 }
 
 /**
  * lpfc_sli4_port_speed_parse - Parse async evt link speed code to link speed
  * @phba: pointer to lpfc hba data structure.
  * @evt_code: asynchronous event code.
  * @speed_code: asynchronous event link speed code.
  *
  * This routine is to parse the giving SLI4 async event link speed code into
  * value of Mbps for the link speed.
  *
  * Return: link speed in terms of Mbps.
  **/
 static uint32_t
 lpfc_sli4_port_speed_parse(struct lpfc_hba *phba, uint32_t evt_code,
                uint8_t speed_code)
 {
     uint32_t port_speed;
 
     switch (evt_code) {
     case LPFC_TRAILER_CODE_LINK:
         switch (speed_code) {
         case LPFC_ASYNC_LINK_SPEED_ZERO:
             port_speed = 0;
             break;
         case LPFC_ASYNC_LINK_SPEED_10MBPS:
             port_speed = 10;
             break;
         case LPFC_ASYNC_LINK_SPEED_100MBPS:
             port_speed = 100;
             break;
         case LPFC_ASYNC_LINK_SPEED_1GBPS:
             port_speed = 1000;
             break;
         case LPFC_ASYNC_LINK_SPEED_10GBPS:
             port_speed = 10000;
             break;
         case LPFC_ASYNC_LINK_SPEED_20GBPS:
             port_speed = 20000;
             break;
         case LPFC_ASYNC_LINK_SPEED_25GBPS:
             port_speed = 25000;
             break;
         case LPFC_ASYNC_LINK_SPEED_40GBPS:
             port_speed = 40000;
             break;
         case LPFC_ASYNC_LINK_SPEED_100GBPS:
             port_speed = 100000;
             break;
         default:
             port_speed = 0;
         }
         break;
     case LPFC_TRAILER_CODE_FC:
         switch (speed_code) {
         case LPFC_FC_LA_SPEED_UNKNOWN:
             port_speed = 0;
             break;
         case LPFC_FC_LA_SPEED_1G:
             port_speed = 1000;
             break;
         case LPFC_FC_LA_SPEED_2G:
             port_speed = 2000;
             break;
         case LPFC_FC_LA_SPEED_4G:
             port_speed = 4000;
             break;
         case LPFC_FC_LA_SPEED_8G:
             port_speed = 8000;
             break;
         case LPFC_FC_LA_SPEED_10G:
             port_speed = 10000;
             break;
         case LPFC_FC_LA_SPEED_16G:
             port_speed = 16000;
             break;
         case LPFC_FC_LA_SPEED_32G:
             port_speed = 32000;
             break;
         case LPFC_FC_LA_SPEED_64G:
             port_speed = 64000;
             break;
         case LPFC_FC_LA_SPEED_128G:
             port_speed = 128000;
             break;
         case LPFC_FC_LA_SPEED_256G:
             port_speed = 256000;
             break;
         default:
             port_speed = 0;
         }
         break;
     default:
         port_speed = 0;
     }
     return port_speed;
 }
 
 /**
  * lpfc_sli4_async_link_evt - Process the asynchronous FCoE link event
  * @phba: pointer to lpfc hba data structure.
  * @acqe_link: pointer to the async link completion queue entry.
  *
  * This routine is to handle the SLI4 asynchronous FCoE link event.
  **/
 static void
 lpfc_sli4_async_link_evt(struct lpfc_hba *phba,
              struct lpfc_acqe_link *acqe_link)
 {
     LPFC_MBOXQ_t *pmb;
     MAILBOX_t *mb;
     struct lpfc_mbx_read_top *la;
     uint8_t att_type;
     int rc;
 
     att_type = lpfc_sli4_parse_latt_type(phba, acqe_link);
     if (att_type != LPFC_ATT_LINK_DOWN && att_type != LPFC_ATT_LINK_UP)
         return;
     phba->fcoe_eventtag = acqe_link->event_tag;
     pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!pmb) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0395 The mboxq allocation failed\n");
         return;
     }
 
     rc = lpfc_mbox_rsrc_prep(phba, pmb);
     if (rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0396 mailbox allocation failed\n");
         goto out_free_pmb;
     }
 
     /* Cleanup any outstanding ELS commands */
     lpfc_els_flush_all_cmd(phba);
 
     /* Block ELS IOCBs until we have done process link event */
     phba->sli4_hba.els_wq->pring->flag |= LPFC_STOP_IOCB_EVENT;
 
     /* Update link event statistics */
     phba->sli.slistat.link_event++;
 
     /* Create lpfc_handle_latt mailbox command from link ACQE */
     lpfc_read_topology(phba, pmb, (struct lpfc_dmabuf *)pmb->ctx_buf);
     pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
     pmb->vport = phba->pport;
 
     /* Keep the link status for extra SLI4 state machine reference */
     phba->sli4_hba.link_state.speed =
             lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_LINK,
                 bf_get(lpfc_acqe_link_speed, acqe_link));
     phba->sli4_hba.link_state.duplex =
                 bf_get(lpfc_acqe_link_duplex, acqe_link);
     phba->sli4_hba.link_state.status =
                 bf_get(lpfc_acqe_link_status, acqe_link);
     phba->sli4_hba.link_state.type =
                 bf_get(lpfc_acqe_link_type, acqe_link);
     phba->sli4_hba.link_state.number =
                 bf_get(lpfc_acqe_link_number, acqe_link);
     phba->sli4_hba.link_state.fault =
                 bf_get(lpfc_acqe_link_fault, acqe_link);
     phba->sli4_hba.link_state.logical_speed =
             bf_get(lpfc_acqe_logical_link_speed, acqe_link) * 10;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
             "2900 Async FC/FCoE Link event - Speed:%dGBit "
             "duplex:x%x LA Type:x%x Port Type:%d Port Number:%d "
             "Logical speed:%dMbps Fault:%d\n",
             phba->sli4_hba.link_state.speed,
             phba->sli4_hba.link_state.topology,
             phba->sli4_hba.link_state.status,
             phba->sli4_hba.link_state.type,
             phba->sli4_hba.link_state.number,
             phba->sli4_hba.link_state.logical_speed,
             phba->sli4_hba.link_state.fault);
     /*
      * For FC Mode: issue the READ_TOPOLOGY mailbox command to fetch
      * topology info. Note: Optional for non FC-AL ports.
      */
     if (!(phba->hba_flag & HBA_FCOE_MODE)) {
         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
         if (rc == MBX_NOT_FINISHED)
             goto out_free_pmb;
         return;
     }
     /*
      * For FCoE Mode: fill in all the topology information we need and call
      * the READ_TOPOLOGY completion routine to continue without actually
      * sending the READ_TOPOLOGY mailbox command to the port.
      */
     /* Initialize completion status */
     mb = &pmb->u.mb;
     mb->mbxStatus = MBX_SUCCESS;
 
     /* Parse port fault information field */
     lpfc_sli4_parse_latt_fault(phba, acqe_link);
 
     /* Parse and translate link attention fields */
     la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
     la->eventTag = acqe_link->event_tag;
     bf_set(lpfc_mbx_read_top_att_type, la, att_type);
     bf_set(lpfc_mbx_read_top_link_spd, la,
            (bf_get(lpfc_acqe_link_speed, acqe_link)));
 
     /* Fake the the following irrelvant fields */
     bf_set(lpfc_mbx_read_top_topology, la, LPFC_TOPOLOGY_PT_PT);
     bf_set(lpfc_mbx_read_top_alpa_granted, la, 0);
     bf_set(lpfc_mbx_read_top_il, la, 0);
     bf_set(lpfc_mbx_read_top_pb, la, 0);
     bf_set(lpfc_mbx_read_top_fa, la, 0);
     bf_set(lpfc_mbx_read_top_mm, la, 0);
 
     /* Invoke the lpfc_handle_latt mailbox command callback function */
     lpfc_mbx_cmpl_read_topology(phba, pmb);
 
     return;
 
 out_free_pmb:
     lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
 }
 
 /**
  * lpfc_async_link_speed_to_read_top - Parse async evt link speed code to read
  * topology.
  * @phba: pointer to lpfc hba data structure.
  * @speed_code: asynchronous event link speed code.
  *
  * This routine is to parse the giving SLI4 async event link speed code into
  * value of Read topology link speed.
  *
  * Return: link speed in terms of Read topology.
  **/
 static uint8_t
 lpfc_async_link_speed_to_read_top(struct lpfc_hba *phba, uint8_t speed_code)
 {
     uint8_t port_speed;
 
     switch (speed_code) {
     case LPFC_FC_LA_SPEED_1G:
         port_speed = LPFC_LINK_SPEED_1GHZ;
         break;
     case LPFC_FC_LA_SPEED_2G:
         port_speed = LPFC_LINK_SPEED_2GHZ;
         break;
     case LPFC_FC_LA_SPEED_4G:
         port_speed = LPFC_LINK_SPEED_4GHZ;
         break;
     case LPFC_FC_LA_SPEED_8G:
         port_speed = LPFC_LINK_SPEED_8GHZ;
         break;
     case LPFC_FC_LA_SPEED_16G:
         port_speed = LPFC_LINK_SPEED_16GHZ;
         break;
     case LPFC_FC_LA_SPEED_32G:
         port_speed = LPFC_LINK_SPEED_32GHZ;
         break;
     case LPFC_FC_LA_SPEED_64G:
         port_speed = LPFC_LINK_SPEED_64GHZ;
         break;
     case LPFC_FC_LA_SPEED_128G:
         port_speed = LPFC_LINK_SPEED_128GHZ;
         break;
     case LPFC_FC_LA_SPEED_256G:
         port_speed = LPFC_LINK_SPEED_256GHZ;
         break;
     default:
         port_speed = 0;
         break;
     }
 
     return port_speed;
 }
 
 void
 lpfc_cgn_dump_rxmonitor(struct lpfc_hba *phba)
 {
     struct rxtable_entry *entry;
     int cnt = 0, head, tail, last, start;
 
     head = atomic_read(&phba->rxtable_idx_head);
     tail = atomic_read(&phba->rxtable_idx_tail);
     if (!phba->rxtable || head == tail) {
         lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT,
                 "4411 Rxtable is empty\n");
         return;
     }
     last = tail;
     start = head;
 
     /* Display the last LPFC_MAX_RXMONITOR_DUMP entries from the rxtable */
     while (start != last) {
         if (start)
             start--;
         else
             start = LPFC_MAX_RXMONITOR_ENTRY - 1;
         entry = &phba->rxtable[start];
         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                 "4410 %02d: MBPI %lld Xmit %lld Cmpl %lld "
                 "Lat %lld ASz %lld Info %02d BWUtil %d "
                 "Int %d slot %d\n",
                 cnt, entry->max_bytes_per_interval,
                 entry->total_bytes, entry->rcv_bytes,
                 entry->avg_io_latency, entry->avg_io_size,
                 entry->cmf_info, entry->timer_utilization,
                 entry->timer_interval, start);
         cnt++;
         if (cnt >= LPFC_MAX_RXMONITOR_DUMP)
             return;
     }
 }
 
 /**
  * lpfc_cgn_update_stat - Save data into congestion stats buffer
  * @phba: pointer to lpfc hba data structure.
  * @dtag: FPIN descriptor received
  *
  * Increment the FPIN received counter/time when it happens.
  */
 void
 lpfc_cgn_update_stat(struct lpfc_hba *phba, uint32_t dtag)
 {
     struct lpfc_cgn_info *cp;
     struct tm broken;
     struct timespec64 cur_time;
     u32 cnt;
     u32 value;
 
     /* Make sure we have a congestion info buffer */
     if (!phba->cgn_i)
         return;
     cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
     ktime_get_real_ts64(&cur_time);
     time64_to_tm(cur_time.tv_sec, 0, &broken);
 
     /* Update congestion statistics */
     switch (dtag) {
     case ELS_DTAG_LNK_INTEGRITY:
         cnt = le32_to_cpu(cp->link_integ_notification);
         cnt++;
         cp->link_integ_notification = cpu_to_le32(cnt);
 
         cp->cgn_stat_lnk_month = broken.tm_mon + 1;
         cp->cgn_stat_lnk_day = broken.tm_mday;
         cp->cgn_stat_lnk_year = broken.tm_year - 100;
         cp->cgn_stat_lnk_hour = broken.tm_hour;
         cp->cgn_stat_lnk_min = broken.tm_min;
         cp->cgn_stat_lnk_sec = broken.tm_sec;
         break;
     case ELS_DTAG_DELIVERY:
         cnt = le32_to_cpu(cp->delivery_notification);
         cnt++;
         cp->delivery_notification = cpu_to_le32(cnt);
 
         cp->cgn_stat_del_month = broken.tm_mon + 1;
         cp->cgn_stat_del_day = broken.tm_mday;
         cp->cgn_stat_del_year = broken.tm_year - 100;
         cp->cgn_stat_del_hour = broken.tm_hour;
         cp->cgn_stat_del_min = broken.tm_min;
         cp->cgn_stat_del_sec = broken.tm_sec;
         break;
     case ELS_DTAG_PEER_CONGEST:
         cnt = le32_to_cpu(cp->cgn_peer_notification);
         cnt++;
         cp->cgn_peer_notification = cpu_to_le32(cnt);
 
         cp->cgn_stat_peer_month = broken.tm_mon + 1;
         cp->cgn_stat_peer_day = broken.tm_mday;
         cp->cgn_stat_peer_year = broken.tm_year - 100;
         cp->cgn_stat_peer_hour = broken.tm_hour;
         cp->cgn_stat_peer_min = broken.tm_min;
         cp->cgn_stat_peer_sec = broken.tm_sec;
         break;
     case ELS_DTAG_CONGESTION:
         cnt = le32_to_cpu(cp->cgn_notification);
         cnt++;
         cp->cgn_notification = cpu_to_le32(cnt);
 
         cp->cgn_stat_cgn_month = broken.tm_mon + 1;
         cp->cgn_stat_cgn_day = broken.tm_mday;
         cp->cgn_stat_cgn_year = broken.tm_year - 100;
         cp->cgn_stat_cgn_hour = broken.tm_hour;
         cp->cgn_stat_cgn_min = broken.tm_min;
         cp->cgn_stat_cgn_sec = broken.tm_sec;
     }
     if (phba->cgn_fpin_frequency &&
         phba->cgn_fpin_frequency != LPFC_FPIN_INIT_FREQ) {
         value = LPFC_CGN_TIMER_TO_MIN / phba->cgn_fpin_frequency;
         cp->cgn_stat_npm = value;
     }
     value = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ,
                     LPFC_CGN_CRC32_SEED);
     cp->cgn_info_crc = cpu_to_le32(value);
 }
 
 /**
  * lpfc_cgn_save_evt_cnt - Save data into registered congestion buffer
  * @phba: pointer to lpfc hba data structure.
  *
  * Save the congestion event data every minute.
  * On the hour collapse all the minute data into hour data. Every day
  * collapse all the hour data into daily data. Separate driver
  * and fabrc congestion event counters that will be saved out
  * to the registered congestion buffer every minute.
  */
 static void
 lpfc_cgn_save_evt_cnt(struct lpfc_hba *phba)
 {
     struct lpfc_cgn_info *cp;
     struct tm broken;
     struct timespec64 cur_time;
     uint32_t i, index;
     uint16_t value, mvalue;
     uint64_t bps;
     uint32_t mbps;
     uint32_t dvalue, wvalue, lvalue, avalue;
     uint64_t latsum;
     __le16 *ptr;
     __le32 *lptr;
     __le16 *mptr;
 
     /* Make sure we have a congestion info buffer */
     if (!phba->cgn_i)
         return;
     cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
 
     if (time_before(jiffies, phba->cgn_evt_timestamp))
         return;
     phba->cgn_evt_timestamp = jiffies +
             msecs_to_jiffies(LPFC_CGN_TIMER_TO_MIN);
     phba->cgn_evt_minute++;
 
     /* We should get to this point in the routine on 1 minute intervals */
 
     ktime_get_real_ts64(&cur_time);
     time64_to_tm(cur_time.tv_sec, 0, &broken);
 
     if (phba->cgn_fpin_frequency &&
         phba->cgn_fpin_frequency != LPFC_FPIN_INIT_FREQ) {
         value = LPFC_CGN_TIMER_TO_MIN / phba->cgn_fpin_frequency;
         cp->cgn_stat_npm = value;
     }
 
     /* Read and clear the latency counters for this minute */
     lvalue = atomic_read(&phba->cgn_latency_evt_cnt);
     latsum = atomic64_read(&phba->cgn_latency_evt);
     atomic_set(&phba->cgn_latency_evt_cnt, 0);
     atomic64_set(&phba->cgn_latency_evt, 0);
 
     /* We need to store MB/sec bandwidth in the congestion information.
      * block_cnt is count of 512 byte blocks for the entire minute,
      * bps will get bytes per sec before finally converting to MB/sec.
      */
     bps = div_u64(phba->rx_block_cnt, LPFC_SEC_MIN) * 512;
     phba->rx_block_cnt = 0;
     mvalue = bps / (1024 * 1024); /* convert to MB/sec */
 
     /* Every minute */
     /* cgn parameters */
     cp->cgn_info_mode = phba->cgn_p.cgn_param_mode;
     cp->cgn_info_level0 = phba->cgn_p.cgn_param_level0;
     cp->cgn_info_level1 = phba->cgn_p.cgn_param_level1;
     cp->cgn_info_level2 = phba->cgn_p.cgn_param_level2;
 
     /* Fill in default LUN qdepth */
     value = (uint16_t)(phba->pport->cfg_lun_queue_depth);
     cp->cgn_lunq = cpu_to_le16(value);
 
     /* Record congestion buffer info - every minute
      * cgn_driver_evt_cnt (Driver events)
      * cgn_fabric_warn_cnt (Congestion Warnings)
      * cgn_latency_evt_cnt / cgn_latency_evt (IO Latency)
      * cgn_fabric_alarm_cnt (Congestion Alarms)
      */
     index = ++cp->cgn_index_minute;
     if (cp->cgn_index_minute == LPFC_MIN_HOUR) {
         cp->cgn_index_minute = 0;
         index = 0;
     }
 
     /* Get the number of driver events in this sample and reset counter */
     dvalue = atomic_read(&phba->cgn_driver_evt_cnt);
     atomic_set(&phba->cgn_driver_evt_cnt, 0);
 
     /* Get the number of warning events - FPIN and Signal for this minute */
     wvalue = 0;
     if ((phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) ||
         phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY ||
         phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM)
         wvalue = atomic_read(&phba->cgn_fabric_warn_cnt);
     atomic_set(&phba->cgn_fabric_warn_cnt, 0);
 
     /* Get the number of alarm events - FPIN and Signal for this minute */
     avalue = 0;
     if ((phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) ||
         phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM)
         avalue = atomic_read(&phba->cgn_fabric_alarm_cnt);
     atomic_set(&phba->cgn_fabric_alarm_cnt, 0);
 
     /* Collect the driver, warning, alarm and latency counts for this
      * minute into the driver congestion buffer.
      */
     ptr = &cp->cgn_drvr_min[index];
     value = (uint16_t)dvalue;
     *ptr = cpu_to_le16(value);
 
     ptr = &cp->cgn_warn_min[index];
     value = (uint16_t)wvalue;
     *ptr = cpu_to_le16(value);
 
     ptr = &cp->cgn_alarm_min[index];
     value = (uint16_t)avalue;
     *ptr = cpu_to_le16(value);
 
     lptr = &cp->cgn_latency_min[index];
     if (lvalue) {
         lvalue = (uint32_t)div_u64(latsum, lvalue);
         *lptr = cpu_to_le32(lvalue);
     } else {
         *lptr = 0;
     }
 
     /* Collect the bandwidth value into the driver's congesion buffer. */
     mptr = &cp->cgn_bw_min[index];
     *mptr = cpu_to_le16(mvalue);
 
     lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
             "2418 Congestion Info - minute (%d): %d %d %d %d %d\n",
             index, dvalue, wvalue, *lptr, mvalue, avalue);
 
     /* Every hour */
     if ((phba->cgn_evt_minute % LPFC_MIN_HOUR) == 0) {
         /* Record congestion buffer info - every hour
          * Collapse all minutes into an hour
          */
         index = ++cp->cgn_index_hour;
         if (cp->cgn_index_hour == LPFC_HOUR_DAY) {
             cp->cgn_index_hour = 0;
             index = 0;
         }
 
         dvalue = 0;
         wvalue = 0;
         lvalue = 0;
         avalue = 0;
         mvalue = 0;
         mbps = 0;
         for (i = 0; i < LPFC_MIN_HOUR; i++) {
             dvalue += le16_to_cpu(cp->cgn_drvr_min[i]);
             wvalue += le16_to_cpu(cp->cgn_warn_min[i]);
             lvalue += le32_to_cpu(cp->cgn_latency_min[i]);
             mbps += le16_to_cpu(cp->cgn_bw_min[i]);
             avalue += le16_to_cpu(cp->cgn_alarm_min[i]);
         }
         if (lvalue)     /* Avg of latency averages */
             lvalue /= LPFC_MIN_HOUR;
         if (mbps)       /* Avg of Bandwidth averages */
             mvalue = mbps / LPFC_MIN_HOUR;
 
         lptr = &cp->cgn_drvr_hr[index];
         *lptr = cpu_to_le32(dvalue);
         lptr = &cp->cgn_warn_hr[index];
         *lptr = cpu_to_le32(wvalue);
         lptr = &cp->cgn_latency_hr[index];
         *lptr = cpu_to_le32(lvalue);
         mptr = &cp->cgn_bw_hr[index];
         *mptr = cpu_to_le16(mvalue);
         lptr = &cp->cgn_alarm_hr[index];
         *lptr = cpu_to_le32(avalue);
 
         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                 "2419 Congestion Info - hour "
                 "(%d): %d %d %d %d %d\n",
                 index, dvalue, wvalue, lvalue, mvalue, avalue);
     }
 
     /* Every day */
     if ((phba->cgn_evt_minute % LPFC_MIN_DAY) == 0) {
         /* Record congestion buffer info - every hour
          * Collapse all hours into a day. Rotate days
          * after LPFC_MAX_CGN_DAYS.
          */
         index = ++cp->cgn_index_day;
         if (cp->cgn_index_day == LPFC_MAX_CGN_DAYS) {
             cp->cgn_index_day = 0;
             index = 0;
         }
 
         /* Anytime we overwrite daily index 0, after we wrap,
          * we will be overwriting the oldest day, so we must
          * update the congestion data start time for that day.
          * That start time should have previously been saved after
          * we wrote the last days worth of data.
          */
         if ((phba->hba_flag & HBA_CGN_DAY_WRAP) && index == 0) {
             time64_to_tm(phba->cgn_daily_ts.tv_sec, 0, &broken);
 
             cp->cgn_info_month = broken.tm_mon + 1;
             cp->cgn_info_day = broken.tm_mday;
             cp->cgn_info_year = broken.tm_year - 100;
             cp->cgn_info_hour = broken.tm_hour;
             cp->cgn_info_minute = broken.tm_min;
             cp->cgn_info_second = broken.tm_sec;
 
             lpfc_printf_log
                 (phba, KERN_INFO, LOG_CGN_MGMT,
                 "2646 CGNInfo idx0 Start Time: "
                 "%d/%d/%d %d:%d:%d\n",
                 cp->cgn_info_day, cp->cgn_info_month,
                 cp->cgn_info_year, cp->cgn_info_hour,
                 cp->cgn_info_minute, cp->cgn_info_second);
         }
 
         dvalue = 0;
         wvalue = 0;
         lvalue = 0;
         mvalue = 0;
         mbps = 0;
         avalue = 0;
         for (i = 0; i < LPFC_HOUR_DAY; i++) {
             dvalue += le32_to_cpu(cp->cgn_drvr_hr[i]);
             wvalue += le32_to_cpu(cp->cgn_warn_hr[i]);
             lvalue += le32_to_cpu(cp->cgn_latency_hr[i]);
             mbps += le16_to_cpu(cp->cgn_bw_hr[i]);
             avalue += le32_to_cpu(cp->cgn_alarm_hr[i]);
         }
         if (lvalue)     /* Avg of latency averages */
             lvalue /= LPFC_HOUR_DAY;
         if (mbps)       /* Avg of Bandwidth averages */
             mvalue = mbps / LPFC_HOUR_DAY;
 
         lptr = &cp->cgn_drvr_day[index];
         *lptr = cpu_to_le32(dvalue);
         lptr = &cp->cgn_warn_day[index];
         *lptr = cpu_to_le32(wvalue);
         lptr = &cp->cgn_latency_day[index];
         *lptr = cpu_to_le32(lvalue);
         mptr = &cp->cgn_bw_day[index];
         *mptr = cpu_to_le16(mvalue);
         lptr = &cp->cgn_alarm_day[index];
         *lptr = cpu_to_le32(avalue);
 
         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                 "2420 Congestion Info - daily (%d): "
                 "%d %d %d %d %d\n",
                 index, dvalue, wvalue, lvalue, mvalue, avalue);
 
         /* We just wrote LPFC_MAX_CGN_DAYS of data,
          * so we are wrapped on any data after this.
          * Save this as the start time for the next day.
          */
         if (index == (LPFC_MAX_CGN_DAYS - 1)) {
             phba->hba_flag |= HBA_CGN_DAY_WRAP;
             ktime_get_real_ts64(&phba->cgn_daily_ts);
         }
     }
 
     /* Use the frequency found in the last rcv'ed FPIN */
     value = phba->cgn_fpin_frequency;
     cp->cgn_warn_freq = cpu_to_le16(value);
     cp->cgn_alarm_freq = cpu_to_le16(value);
 
     lvalue = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ,
                      LPFC_CGN_CRC32_SEED);
     cp->cgn_info_crc = cpu_to_le32(lvalue);
 }
 
 /**
  * lpfc_calc_cmf_latency - latency from start of rxate timer interval
  * @phba: The Hba for which this call is being executed.
  *
  * The routine calculates the latency from the beginning of the CMF timer
  * interval to the current point in time. It is called from IO completion
  * when we exceed our Bandwidth limitation for the time interval.
  */
 uint32_t
 lpfc_calc_cmf_latency(struct lpfc_hba *phba)
 {
     struct timespec64 cmpl_time;
     uint32_t msec = 0;
 
     ktime_get_real_ts64(&cmpl_time);
 
     /* This routine works on a ms granularity so sec and usec are
      * converted accordingly.
      */
     if (cmpl_time.tv_sec == phba->cmf_latency.tv_sec) {
         msec = (cmpl_time.tv_nsec - phba->cmf_latency.tv_nsec) /
             NSEC_PER_MSEC;
     } else {
         if (cmpl_time.tv_nsec >= phba->cmf_latency.tv_nsec) {
             msec = (cmpl_time.tv_sec -
                 phba->cmf_latency.tv_sec) * MSEC_PER_SEC;
             msec += ((cmpl_time.tv_nsec -
                   phba->cmf_latency.tv_nsec) / NSEC_PER_MSEC);
         } else {
             msec = (cmpl_time.tv_sec - phba->cmf_latency.tv_sec -
                 1) * MSEC_PER_SEC;
             msec += (((NSEC_PER_SEC - phba->cmf_latency.tv_nsec) +
                  cmpl_time.tv_nsec) / NSEC_PER_MSEC);
         }
     }
     return msec;
 }
 
 /**
  * lpfc_cmf_timer -  This is the timer function for one congestion
  * rate interval.
  * @timer: Pointer to the high resolution timer that expired
  */
 static enum hrtimer_restart
 lpfc_cmf_timer(struct hrtimer *timer)
 {
     struct lpfc_hba *phba = container_of(timer, struct lpfc_hba,
                          cmf_timer);
     struct rxtable_entry *entry;
     uint32_t io_cnt;
     uint32_t head, tail;
     uint32_t busy, max_read;
     uint64_t total, rcv, lat, mbpi, extra, cnt;
     int timer_interval = LPFC_CMF_INTERVAL;
     uint32_t ms;
     struct lpfc_cgn_stat *cgs;
     int cpu;
 
     /* Only restart the timer if congestion mgmt is on */
     if (phba->cmf_active_mode == LPFC_CFG_OFF ||
         !phba->cmf_latency.tv_sec) {
         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                 "6224 CMF timer exit: %d %lld\n",
                 phba->cmf_active_mode,
                 (uint64_t)phba->cmf_latency.tv_sec);
         return HRTIMER_NORESTART;
     }
 
     /* If pport is not ready yet, just exit and wait for
      * the next timer cycle to hit.
      */
     if (!phba->pport)
         goto skip;
 
     /* Do not block SCSI IO while in the timer routine since
      * total_bytes will be cleared
      */
     atomic_set(&phba->cmf_stop_io, 1);
 
     /* First we need to calculate the actual ms between
      * the last timer interrupt and this one. We ask for
      * LPFC_CMF_INTERVAL, however the actual time may
      * vary depending on system overhead.
      */
     ms = lpfc_calc_cmf_latency(phba);
 
 
     /* Immediately after we calculate the time since the last
      * timer interrupt, set the start time for the next
      * interrupt
      */
     ktime_get_real_ts64(&phba->cmf_latency);
 
     phba->cmf_link_byte_count =
         div_u64(phba->cmf_max_line_rate * LPFC_CMF_INTERVAL, 1000);
 
     /* Collect all the stats from the prior timer interval */
     total = 0;
     io_cnt = 0;
     lat = 0;
     rcv = 0;
     for_each_present_cpu(cpu) {
         cgs = per_cpu_ptr(phba->cmf_stat, cpu);
         total += atomic64_xchg(&cgs->total_bytes, 0);
         io_cnt += atomic_xchg(&cgs->rx_io_cnt, 0);
         lat += atomic64_xchg(&cgs->rx_latency, 0);
         rcv += atomic64_xchg(&cgs->rcv_bytes, 0);
     }
 
     /* Before we issue another CMF_SYNC_WQE, retrieve the BW
      * returned from the last CMF_SYNC_WQE issued, from
      * cmf_last_sync_bw. This will be the target BW for
      * this next timer interval.
      */
     if (phba->cmf_active_mode == LPFC_CFG_MANAGED &&
         phba->link_state != LPFC_LINK_DOWN &&
         phba->hba_flag & HBA_SETUP) {
         mbpi = phba->cmf_last_sync_bw;
         phba->cmf_last_sync_bw = 0;
         extra = 0;
 
         /* Calculate any extra bytes needed to account for the
          * timer accuracy. If we are less than LPFC_CMF_INTERVAL
          * calculate the adjustment needed for total to reflect
          * a full LPFC_CMF_INTERVAL.
          */
         if (ms && ms < LPFC_CMF_INTERVAL) {
             cnt = div_u64(total, ms); /* bytes per ms */
             cnt *= LPFC_CMF_INTERVAL; /* what total should be */
 
             /* If the timeout is scheduled to be shorter,
              * this value may skew the data, so cap it at mbpi.
              */
             if ((phba->hba_flag & HBA_SHORT_CMF) && cnt > mbpi)
                 cnt = mbpi;
 
             extra = cnt - total;
         }
         lpfc_issue_cmf_sync_wqe(phba, LPFC_CMF_INTERVAL, total + extra);
     } else {
         /* For Monitor mode or link down we want mbpi
          * to be the full link speed
          */
         mbpi = phba->cmf_link_byte_count;
         extra = 0;
     }
     phba->cmf_timer_cnt++;
 
     if (io_cnt) {
         /* Update congestion info buffer latency in us */
         atomic_add(io_cnt, &phba->cgn_latency_evt_cnt);
         atomic64_add(lat, &phba->cgn_latency_evt);
     }
     busy = atomic_xchg(&phba->cmf_busy, 0);
     max_read = atomic_xchg(&phba->rx_max_read_cnt, 0);
 
     /* Calculate MBPI for the next timer interval */
     if (mbpi) {
         if (mbpi > phba->cmf_link_byte_count ||
             phba->cmf_active_mode == LPFC_CFG_MONITOR)
             mbpi = phba->cmf_link_byte_count;
 
         /* Change max_bytes_per_interval to what the prior
          * CMF_SYNC_WQE cmpl indicated.
          */
         if (mbpi != phba->cmf_max_bytes_per_interval)
             phba->cmf_max_bytes_per_interval = mbpi;
     }
 
     /* Save rxmonitor information for debug */
     if (phba->rxtable) {
         head = atomic_xchg(&phba->rxtable_idx_head,
                    LPFC_RXMONITOR_TABLE_IN_USE);
         entry = &phba->rxtable[head];
         entry->total_bytes = total;
         entry->cmf_bytes = total + extra;
         entry->rcv_bytes = rcv;
         entry->cmf_busy = busy;
         entry->cmf_info = phba->cmf_active_info;
         if (io_cnt) {
             entry->avg_io_latency = div_u64(lat, io_cnt);
             entry->avg_io_size = div_u64(rcv, io_cnt);
         } else {
             entry->avg_io_latency = 0;
             entry->avg_io_size = 0;
         }
         entry->max_read_cnt = max_read;
         entry->io_cnt = io_cnt;
         entry->max_bytes_per_interval = mbpi;
         if (phba->cmf_active_mode == LPFC_CFG_MANAGED)
             entry->timer_utilization = phba->cmf_last_ts;
         else
             entry->timer_utilization = ms;
         entry->timer_interval = ms;
         phba->cmf_last_ts = 0;
 
         /* Increment rxtable index */
         head = (head + 1) % LPFC_MAX_RXMONITOR_ENTRY;
         tail = atomic_read(&phba->rxtable_idx_tail);
         if (head == tail) {
             tail = (tail + 1) % LPFC_MAX_RXMONITOR_ENTRY;
             atomic_set(&phba->rxtable_idx_tail, tail);
         }
         atomic_set(&phba->rxtable_idx_head, head);
     }
 
     if (phba->cmf_active_mode == LPFC_CFG_MONITOR) {
         /* If Monitor mode, check if we are oversubscribed
          * against the full line rate.
          */
         if (mbpi && total > mbpi)
             atomic_inc(&phba->cgn_driver_evt_cnt);
     }
     phba->rx_block_cnt += div_u64(rcv, 512);  /* save 512 byte block cnt */
 
     /* Each minute save Fabric and Driver congestion information */
     lpfc_cgn_save_evt_cnt(phba);
 
     phba->hba_flag &= ~HBA_SHORT_CMF;
 
     /* Since we need to call lpfc_cgn_save_evt_cnt every minute, on the
      * minute, adjust our next timer interval, if needed, to ensure a
      * 1 minute granularity when we get the next timer interrupt.
      */
     if (time_after(jiffies + msecs_to_jiffies(LPFC_CMF_INTERVAL),
                phba->cgn_evt_timestamp)) {
         timer_interval = jiffies_to_msecs(phba->cgn_evt_timestamp -
                           jiffies);
         if (timer_interval <= 0)
             timer_interval = LPFC_CMF_INTERVAL;
         else
             phba->hba_flag |= HBA_SHORT_CMF;
 
         /* If we adjust timer_interval, max_bytes_per_interval
          * needs to be adjusted as well.
          */
         phba->cmf_link_byte_count = div_u64(phba->cmf_max_line_rate *
                             timer_interval, 1000);
         if (phba->cmf_active_mode == LPFC_CFG_MONITOR)
             phba->cmf_max_bytes_per_interval =
                 phba->cmf_link_byte_count;
     }
 
     /* Since total_bytes has already been zero'ed, its okay to unblock
      * after max_bytes_per_interval is setup.
      */
     if (atomic_xchg(&phba->cmf_bw_wait, 0))
         queue_work(phba->wq, &phba->unblock_request_work);
 
     /* SCSI IO is now unblocked */
     atomic_set(&phba->cmf_stop_io, 0);
 
 skip:
     hrtimer_forward_now(timer,
                 ktime_set(0, timer_interval * NSEC_PER_MSEC));
     return HRTIMER_RESTART;
 }
 
 #define trunk_link_status(__idx)\
     bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\
            ((phba->trunk_link.link##__idx.state == LPFC_LINK_UP) ?\
         "Link up" : "Link down") : "NA"
 /* Did port __idx reported an error */
 #define trunk_port_fault(__idx)\
     bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\
            (port_fault & (1 << __idx) ? "YES" : "NO") : "NA"
 
 static void
 lpfc_update_trunk_link_status(struct lpfc_hba *phba,
                   struct lpfc_acqe_fc_la *acqe_fc)
 {
     uint8_t port_fault = bf_get(lpfc_acqe_fc_la_trunk_linkmask, acqe_fc);
     uint8_t err = bf_get(lpfc_acqe_fc_la_trunk_fault, acqe_fc);
 
     phba->sli4_hba.link_state.speed =
         lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,
                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
 
     phba->sli4_hba.link_state.logical_speed =
                 bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;
     /* We got FC link speed, convert to fc_linkspeed (READ_TOPOLOGY) */
     phba->fc_linkspeed =
          lpfc_async_link_speed_to_read_top(
                 phba,
                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
 
     if (bf_get(lpfc_acqe_fc_la_trunk_config_port0, acqe_fc)) {
         phba->trunk_link.link0.state =
             bf_get(lpfc_acqe_fc_la_trunk_link_status_port0, acqe_fc)
             ? LPFC_LINK_UP : LPFC_LINK_DOWN;
         phba->trunk_link.link0.fault = port_fault & 0x1 ? err : 0;
     }
     if (bf_get(lpfc_acqe_fc_la_trunk_config_port1, acqe_fc)) {
         phba->trunk_link.link1.state =
             bf_get(lpfc_acqe_fc_la_trunk_link_status_port1, acqe_fc)
             ? LPFC_LINK_UP : LPFC_LINK_DOWN;
         phba->trunk_link.link1.fault = port_fault & 0x2 ? err : 0;
     }
     if (bf_get(lpfc_acqe_fc_la_trunk_config_port2, acqe_fc)) {
         phba->trunk_link.link2.state =
             bf_get(lpfc_acqe_fc_la_trunk_link_status_port2, acqe_fc)
             ? LPFC_LINK_UP : LPFC_LINK_DOWN;
         phba->trunk_link.link2.fault = port_fault & 0x4 ? err : 0;
     }
     if (bf_get(lpfc_acqe_fc_la_trunk_config_port3, acqe_fc)) {
         phba->trunk_link.link3.state =
             bf_get(lpfc_acqe_fc_la_trunk_link_status_port3, acqe_fc)
             ? LPFC_LINK_UP : LPFC_LINK_DOWN;
         phba->trunk_link.link3.fault = port_fault & 0x8 ? err : 0;
     }
 
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "2910 Async FC Trunking Event - Speed:%d\n"
             "\tLogical speed:%d "
             "port0: %s port1: %s port2: %s port3: %s\n",
             phba->sli4_hba.link_state.speed,
             phba->sli4_hba.link_state.logical_speed,
             trunk_link_status(0), trunk_link_status(1),
             trunk_link_status(2), trunk_link_status(3));
 
     if (phba->cmf_active_mode != LPFC_CFG_OFF)
         lpfc_cmf_signal_init(phba);
 
     if (port_fault)
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3202 trunk error:0x%x (%s) seen on port0:%s "
                 /*
                  * SLI-4: We have only 0xA error codes
                  * defined as of now. print an appropriate
                  * message in case driver needs to be updated.
                  */
                 "port1:%s port2:%s port3:%s\n", err, err > 0xA ?
                 "UNDEFINED. update driver." : trunk_errmsg[err],
                 trunk_port_fault(0), trunk_port_fault(1),
                 trunk_port_fault(2), trunk_port_fault(3));
 }
 
 
 /**
  * lpfc_sli4_async_fc_evt - Process the asynchronous FC link event
  * @phba: pointer to lpfc hba data structure.
  * @acqe_fc: pointer to the async fc completion queue entry.
  *
  * This routine is to handle the SLI4 asynchronous FC event. It will simply log
  * that the event was received and then issue a read_topology mailbox command so
  * that the rest of the driver will treat it the same as SLI3.
  **/
 static void
 lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc)
 {
     LPFC_MBOXQ_t *pmb;
     MAILBOX_t *mb;
     struct lpfc_mbx_read_top *la;
     int rc;
 
     if (bf_get(lpfc_trailer_type, acqe_fc) !=
         LPFC_FC_LA_EVENT_TYPE_FC_LINK) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2895 Non FC link Event detected.(%d)\n",
                 bf_get(lpfc_trailer_type, acqe_fc));
         return;
     }
 
     if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==
         LPFC_FC_LA_TYPE_TRUNKING_EVENT) {
         lpfc_update_trunk_link_status(phba, acqe_fc);
         return;
     }
 
     /* Keep the link status for extra SLI4 state machine reference */
     phba->sli4_hba.link_state.speed =
             lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,
                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
     phba->sli4_hba.link_state.duplex = LPFC_ASYNC_LINK_DUPLEX_FULL;
     phba->sli4_hba.link_state.topology =
                 bf_get(lpfc_acqe_fc_la_topology, acqe_fc);
     phba->sli4_hba.link_state.status =
                 bf_get(lpfc_acqe_fc_la_att_type, acqe_fc);
     phba->sli4_hba.link_state.type =
                 bf_get(lpfc_acqe_fc_la_port_type, acqe_fc);
     phba->sli4_hba.link_state.number =
                 bf_get(lpfc_acqe_fc_la_port_number, acqe_fc);
     phba->sli4_hba.link_state.fault =
                 bf_get(lpfc_acqe_link_fault, acqe_fc);
 
     if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==
         LPFC_FC_LA_TYPE_LINK_DOWN)
         phba->sli4_hba.link_state.logical_speed = 0;
     else if (!phba->sli4_hba.conf_trunk)
         phba->sli4_hba.link_state.logical_speed =
                 bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
             "2896 Async FC event - Speed:%dGBaud Topology:x%x "
             "LA Type:x%x Port Type:%d Port Number:%d Logical speed:"
             "%dMbps Fault:%d\n",
             phba->sli4_hba.link_state.speed,
             phba->sli4_hba.link_state.topology,
             phba->sli4_hba.link_state.status,
             phba->sli4_hba.link_state.type,
             phba->sli4_hba.link_state.number,
             phba->sli4_hba.link_state.logical_speed,
             phba->sli4_hba.link_state.fault);
     pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!pmb) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2897 The mboxq allocation failed\n");
         return;
     }
     rc = lpfc_mbox_rsrc_prep(phba, pmb);
     if (rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2898 The mboxq prep failed\n");
         goto out_free_pmb;
     }
 
     /* Cleanup any outstanding ELS commands */
     lpfc_els_flush_all_cmd(phba);
 
     /* Block ELS IOCBs until we have done process link event */
     phba->sli4_hba.els_wq->pring->flag |= LPFC_STOP_IOCB_EVENT;
 
     /* Update link event statistics */
     phba->sli.slistat.link_event++;
 
     /* Create lpfc_handle_latt mailbox command from link ACQE */
     lpfc_read_topology(phba, pmb, (struct lpfc_dmabuf *)pmb->ctx_buf);
     pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
     pmb->vport = phba->pport;
 
     if (phba->sli4_hba.link_state.status != LPFC_FC_LA_TYPE_LINK_UP) {
         phba->link_flag &= ~(LS_MDS_LINK_DOWN | LS_MDS_LOOPBACK);
 
         switch (phba->sli4_hba.link_state.status) {
         case LPFC_FC_LA_TYPE_MDS_LINK_DOWN:
             phba->link_flag |= LS_MDS_LINK_DOWN;
             break;
         case LPFC_FC_LA_TYPE_MDS_LOOPBACK:
             phba->link_flag |= LS_MDS_LOOPBACK;
             break;
         default:
             break;
         }
 
         /* Initialize completion status */
         mb = &pmb->u.mb;
         mb->mbxStatus = MBX_SUCCESS;
 
         /* Parse port fault information field */
         lpfc_sli4_parse_latt_fault(phba, (void *)acqe_fc);
 
         /* Parse and translate link attention fields */
         la = (struct lpfc_mbx_read_top *)&pmb->u.mb.un.varReadTop;
         la->eventTag = acqe_fc->event_tag;
 
         if (phba->sli4_hba.link_state.status ==
             LPFC_FC_LA_TYPE_UNEXP_WWPN) {
             bf_set(lpfc_mbx_read_top_att_type, la,
                    LPFC_FC_LA_TYPE_UNEXP_WWPN);
         } else {
             bf_set(lpfc_mbx_read_top_att_type, la,
                    LPFC_FC_LA_TYPE_LINK_DOWN);
         }
         /* Invoke the mailbox command callback function */
         lpfc_mbx_cmpl_read_topology(phba, pmb);
 
         return;
     }
 
     rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
     if (rc == MBX_NOT_FINISHED)
         goto out_free_pmb;
     return;
 
 out_free_pmb:
     lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
 }
 
 /**
  * lpfc_sli4_async_sli_evt - Process the asynchronous SLI link event
  * @phba: pointer to lpfc hba data structure.
  * @acqe_sli: pointer to the async SLI completion queue entry.
  *
  * This routine is to handle the SLI4 asynchronous SLI events.
  **/
 static void
 lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli)
 {
     char port_name;
     char message[128];
     uint8_t status;
     uint8_t evt_type;
     uint8_t operational = 0;
     struct temp_event temp_event_data;
     struct lpfc_acqe_misconfigured_event *misconfigured;
     struct lpfc_acqe_cgn_signal *cgn_signal;
     struct Scsi_Host  *shost;
     struct lpfc_vport **vports;
     int rc, i, cnt;
 
     evt_type = bf_get(lpfc_trailer_type, acqe_sli);
 
     lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
             "2901 Async SLI event - Type:%d, Event Data: x%08x "
             "x%08x x%08x x%08x\n", evt_type,
             acqe_sli->event_data1, acqe_sli->event_data2,
             acqe_sli->reserved, acqe_sli->trailer);
 
     port_name = phba->Port[0];
     if (port_name == 0x00)
         port_name = '?'; /* get port name is empty */
 
     switch (evt_type) {
     case LPFC_SLI_EVENT_TYPE_OVER_TEMP:
         temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
         temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
         temp_event_data.data = (uint32_t)acqe_sli->event_data1;
 
         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
                 "3190 Over Temperature:%d Celsius- Port Name %c\n",
                 acqe_sli->event_data1, port_name);
 
         phba->sfp_warning |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;
         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,
                       SCSI_NL_VID_TYPE_PCI
                       | PCI_VENDOR_ID_EMULEX);
         break;
     case LPFC_SLI_EVENT_TYPE_NORM_TEMP:
         temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
         temp_event_data.event_code = LPFC_NORMAL_TEMP;
         temp_event_data.data = (uint32_t)acqe_sli->event_data1;
 
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "3191 Normal Temperature:%d Celsius - Port Name %c\n",
                 acqe_sli->event_data1, port_name);
 
         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,
                       SCSI_NL_VID_TYPE_PCI
                       | PCI_VENDOR_ID_EMULEX);
         break;
     case LPFC_SLI_EVENT_TYPE_MISCONFIGURED:
         misconfigured = (struct lpfc_acqe_misconfigured_event *)
                     &acqe_sli->event_data1;
 
         /* fetch the status for this port */
         switch (phba->sli4_hba.lnk_info.lnk_no) {
         case LPFC_LINK_NUMBER_0:
             status = bf_get(lpfc_sli_misconfigured_port0_state,
                     &misconfigured->theEvent);
             operational = bf_get(lpfc_sli_misconfigured_port0_op,
                     &misconfigured->theEvent);
             break;
         case LPFC_LINK_NUMBER_1:
             status = bf_get(lpfc_sli_misconfigured_port1_state,
                     &misconfigured->theEvent);
             operational = bf_get(lpfc_sli_misconfigured_port1_op,
                     &misconfigured->theEvent);
             break;
         case LPFC_LINK_NUMBER_2:
             status = bf_get(lpfc_sli_misconfigured_port2_state,
                     &misconfigured->theEvent);
             operational = bf_get(lpfc_sli_misconfigured_port2_op,
                     &misconfigured->theEvent);
             break;
         case LPFC_LINK_NUMBER_3:
             status = bf_get(lpfc_sli_misconfigured_port3_state,
                     &misconfigured->theEvent);
             operational = bf_get(lpfc_sli_misconfigured_port3_op,
                     &misconfigured->theEvent);
             break;
         default:
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "3296 "
                     "LPFC_SLI_EVENT_TYPE_MISCONFIGURED "
                     "event: Invalid link %d",
                     phba->sli4_hba.lnk_info.lnk_no);
             return;
         }
 
         /* Skip if optic state unchanged */
         if (phba->sli4_hba.lnk_info.optic_state == status)
             return;
 
         switch (status) {
         case LPFC_SLI_EVENT_STATUS_VALID:
             sprintf(message, "Physical Link is functional");
             break;
         case LPFC_SLI_EVENT_STATUS_NOT_PRESENT:
             sprintf(message, "Optics faulted/incorrectly "
                 "installed/not installed - Reseat optics, "
                 "if issue not resolved, replace.");
             break;
         case LPFC_SLI_EVENT_STATUS_WRONG_TYPE:
             sprintf(message,
                 "Optics of two types installed - Remove one "
                 "optic or install matching pair of optics.");
             break;
         case LPFC_SLI_EVENT_STATUS_UNSUPPORTED:
             sprintf(message, "Incompatible optics - Replace with "
                 "compatible optics for card to function.");
             break;
         case LPFC_SLI_EVENT_STATUS_UNQUALIFIED:
             sprintf(message, "Unqualified optics - Replace with "
                 "Avago optics for Warranty and Technical "
                 "Support - Link is%s operational",
                 (operational) ? " not" : "");
             break;
         case LPFC_SLI_EVENT_STATUS_UNCERTIFIED:
             sprintf(message, "Uncertified optics - Replace with "
                 "Avago-certified optics to enable link "
                 "operation - Link is%s operational",
                 (operational) ? " not" : "");
             break;
         default:
             /* firmware is reporting a status we don't know about */
             sprintf(message, "Unknown event status x%02x", status);
             break;
         }
 
         /* Issue READ_CONFIG mbox command to refresh supported speeds */
         rc = lpfc_sli4_read_config(phba);
         if (rc) {
             phba->lmt = 0;
             lpfc_printf_log(phba, KERN_ERR,
                     LOG_TRACE_EVENT,
                     "3194 Unable to retrieve supported "
                     "speeds, rc = 0x%x\n", rc);
         }
         rc = lpfc_sli4_refresh_params(phba);
         if (rc) {
             lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
                     "3174 Unable to update pls support, "
                     "rc x%x\n", rc);
         }
         vports = lpfc_create_vport_work_array(phba);
         if (vports != NULL) {
             for (i = 0; i <= phba->max_vports && vports[i] != NULL;
                     i++) {
                 shost = lpfc_shost_from_vport(vports[i]);
                 lpfc_host_supported_speeds_set(shost);
             }
         }
         lpfc_destroy_vport_work_array(phba, vports);
 
         phba->sli4_hba.lnk_info.optic_state = status;
         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
                 "3176 Port Name %c %s\n", port_name, message);
         break;
     case LPFC_SLI_EVENT_TYPE_REMOTE_DPORT:
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "3192 Remote DPort Test Initiated - "
                 "Event Data1:x%08x Event Data2: x%08x\n",
                 acqe_sli->event_data1, acqe_sli->event_data2);
         break;
     case LPFC_SLI_EVENT_TYPE_PORT_PARAMS_CHG:
         /* Call FW to obtain active parms */
         lpfc_sli4_cgn_parm_chg_evt(phba);
         break;
     case LPFC_SLI_EVENT_TYPE_MISCONF_FAWWN:
         /* Misconfigured WWN. Reports that the SLI Port is configured
          * to use FA-WWN, but the attached device doesn’t support it.
          * Event Data1 - N.A, Event Data2 - N.A
          * This event only happens on the physical port.
          */
         lpfc_log_msg(phba, KERN_WARNING, LOG_SLI | LOG_DISCOVERY,
                  "2699 Misconfigured FA-PWWN - Attached device "
                  "does not support FA-PWWN\n");
         phba->sli4_hba.fawwpn_flag &= ~LPFC_FAWWPN_FABRIC;
         memset(phba->pport->fc_portname.u.wwn, 0,
                sizeof(struct lpfc_name));
         break;
     case LPFC_SLI_EVENT_TYPE_EEPROM_FAILURE:
         /* EEPROM failure. No driver action is required */
         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
                  "2518 EEPROM failure - "
                  "Event Data1: x%08x Event Data2: x%08x\n",
                  acqe_sli->event_data1, acqe_sli->event_data2);
         break;
     case LPFC_SLI_EVENT_TYPE_CGN_SIGNAL:
         if (phba->cmf_active_mode == LPFC_CFG_OFF)
             break;
         cgn_signal = (struct lpfc_acqe_cgn_signal *)
                     &acqe_sli->event_data1;
         phba->cgn_acqe_cnt++;
 
         cnt = bf_get(lpfc_warn_acqe, cgn_signal);
         atomic64_add(cnt, &phba->cgn_acqe_stat.warn);
         atomic64_add(cgn_signal->alarm_cnt, &phba->cgn_acqe_stat.alarm);
 
         /* no threshold for CMF, even 1 signal will trigger an event */
 
         /* Alarm overrides warning, so check that first */
         if (cgn_signal->alarm_cnt) {
             if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) {
                 /* Keep track of alarm cnt for CMF_SYNC_WQE */
                 atomic_add(cgn_signal->alarm_cnt,
                        &phba->cgn_sync_alarm_cnt);
             }
         } else if (cnt) {
             /* signal action needs to be taken */
             if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY ||
                 phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) {
                 /* Keep track of warning cnt for CMF_SYNC_WQE */
                 atomic_add(cnt, &phba->cgn_sync_warn_cnt);
             }
         }
         break;
     default:
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "3193 Unrecognized SLI event, type: 0x%x",
                 evt_type);
         break;
     }
 }
 
 /**
  * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport
  * @vport: pointer to vport data structure.
  *
  * This routine is to perform Clear Virtual Link (CVL) on a vport in
  * response to a CVL event.
  *
  * Return the pointer to the ndlp with the vport if successful, otherwise
  * return NULL.
  **/
 static struct lpfc_nodelist *
 lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
 {
     struct lpfc_nodelist *ndlp;
     struct Scsi_Host *shost;
     struct lpfc_hba *phba;
 
     if (!vport)
         return NULL;
     phba = vport->phba;
     if (!phba)
         return NULL;
     ndlp = lpfc_findnode_did(vport, Fabric_DID);
     if (!ndlp) {
         /* Cannot find existing Fabric ndlp, so allocate a new one */
         ndlp = lpfc_nlp_init(vport, Fabric_DID);
         if (!ndlp)
             return NULL;
         /* Set the node type */
         ndlp->nlp_type |= NLP_FABRIC;
         /* Put ndlp onto node list */
         lpfc_enqueue_node(vport, ndlp);
     }
     if ((phba->pport->port_state < LPFC_FLOGI) &&
         (phba->pport->port_state != LPFC_VPORT_FAILED))
         return NULL;
     /* If virtual link is not yet instantiated ignore CVL */
     if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC)
         && (vport->port_state != LPFC_VPORT_FAILED))
         return NULL;
     shost = lpfc_shost_from_vport(vport);
     if (!shost)
         return NULL;
     lpfc_linkdown_port(vport);
     lpfc_cleanup_pending_mbox(vport);
     spin_lock_irq(shost->host_lock);
     vport->fc_flag |= FC_VPORT_CVL_RCVD;
     spin_unlock_irq(shost->host_lock);
 
     return ndlp;
 }
 
 /**
  * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is to perform Clear Virtual Link (CVL) on all vports in
  * response to a FCF dead event.
  **/
 static void
 lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)
 {
     struct lpfc_vport **vports;
     int i;
 
     vports = lpfc_create_vport_work_array(phba);
     if (vports)
         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
             lpfc_sli4_perform_vport_cvl(vports[i]);
     lpfc_destroy_vport_work_array(phba, vports);
 }
 
 /**
  * lpfc_sli4_async_fip_evt - Process the asynchronous FCoE FIP event
  * @phba: pointer to lpfc hba data structure.
  * @acqe_fip: pointer to the async fcoe completion queue entry.
  *
  * This routine is to handle the SLI4 asynchronous fcoe event.
  **/
 static void
 lpfc_sli4_async_fip_evt(struct lpfc_hba *phba,
             struct lpfc_acqe_fip *acqe_fip)
 {
     uint8_t event_type = bf_get(lpfc_trailer_type, acqe_fip);
     int rc;
     struct lpfc_vport *vport;
     struct lpfc_nodelist *ndlp;
     int active_vlink_present;
     struct lpfc_vport **vports;
     int i;
 
     phba->fc_eventTag = acqe_fip->event_tag;
     phba->fcoe_eventtag = acqe_fip->event_tag;
     switch (event_type) {
     case LPFC_FIP_EVENT_TYPE_NEW_FCF:
     case LPFC_FIP_EVENT_TYPE_FCF_PARAM_MOD:
         if (event_type == LPFC_FIP_EVENT_TYPE_NEW_FCF)
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2546 New FCF event, evt_tag:x%x, "
                     "index:x%x\n",
                     acqe_fip->event_tag,
                     acqe_fip->index);
         else
             lpfc_printf_log(phba, KERN_WARNING, LOG_FIP |
                     LOG_DISCOVERY,
                     "2788 FCF param modified event, "
                     "evt_tag:x%x, index:x%x\n",
                     acqe_fip->event_tag,
                     acqe_fip->index);
         if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
             /*
              * During period of FCF discovery, read the FCF
              * table record indexed by the event to update
              * FCF roundrobin failover eligible FCF bmask.
              */
             lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
                     LOG_DISCOVERY,
                     "2779 Read FCF (x%x) for updating "
                     "roundrobin FCF failover bmask\n",
                     acqe_fip->index);
             rc = lpfc_sli4_read_fcf_rec(phba, acqe_fip->index);
         }
 
         /* If the FCF discovery is in progress, do nothing. */
         spin_lock_irq(&phba->hbalock);
         if (phba->hba_flag & FCF_TS_INPROG) {
             spin_unlock_irq(&phba->hbalock);
             break;
         }
         /* If fast FCF failover rescan event is pending, do nothing */
         if (phba->fcf.fcf_flag & (FCF_REDISC_EVT | FCF_REDISC_PEND)) {
             spin_unlock_irq(&phba->hbalock);
             break;
         }
 
         /* If the FCF has been in discovered state, do nothing. */
         if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {
             spin_unlock_irq(&phba->hbalock);
             break;
         }
         spin_unlock_irq(&phba->hbalock);
 
         /* Otherwise, scan the entire FCF table and re-discover SAN */
         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
                 "2770 Start FCF table scan per async FCF "
                 "event, evt_tag:x%x, index:x%x\n",
                 acqe_fip->event_tag, acqe_fip->index);
         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
                              LPFC_FCOE_FCF_GET_FIRST);
         if (rc)
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2547 Issue FCF scan read FCF mailbox "
                     "command failed (x%x)\n", rc);
         break;
 
     case LPFC_FIP_EVENT_TYPE_FCF_TABLE_FULL:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2548 FCF Table full count 0x%x tag 0x%x\n",
                 bf_get(lpfc_acqe_fip_fcf_count, acqe_fip),
                 acqe_fip->event_tag);
         break;
 
     case LPFC_FIP_EVENT_TYPE_FCF_DEAD:
         phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2549 FCF (x%x) disconnected from network, "
                  "tag:x%x\n", acqe_fip->index,
                  acqe_fip->event_tag);
         /*
          * If we are in the middle of FCF failover process, clear
          * the corresponding FCF bit in the roundrobin bitmap.
          */
         spin_lock_irq(&phba->hbalock);
         if ((phba->fcf.fcf_flag & FCF_DISCOVERY) &&
             (phba->fcf.current_rec.fcf_indx != acqe_fip->index)) {
             spin_unlock_irq(&phba->hbalock);
             /* Update FLOGI FCF failover eligible FCF bmask */
             lpfc_sli4_fcf_rr_index_clear(phba, acqe_fip->index);
             break;
         }
         spin_unlock_irq(&phba->hbalock);
 
         /* If the event is not for currently used fcf do nothing */
         if (phba->fcf.current_rec.fcf_indx != acqe_fip->index)
             break;
 
         /*
          * Otherwise, request the port to rediscover the entire FCF
          * table for a fast recovery from case that the current FCF
          * is no longer valid as we are not in the middle of FCF
          * failover process already.
          */
         spin_lock_irq(&phba->hbalock);
         /* Mark the fast failover process in progress */
         phba->fcf.fcf_flag |= FCF_DEAD_DISC;
         spin_unlock_irq(&phba->hbalock);
 
         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
                 "2771 Start FCF fast failover process due to "
                 "FCF DEAD event: evt_tag:x%x, fcf_index:x%x "
                 "\n", acqe_fip->event_tag, acqe_fip->index);
         rc = lpfc_sli4_redisc_fcf_table(phba);
         if (rc) {
             lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
                     LOG_TRACE_EVENT,
                     "2772 Issue FCF rediscover mailbox "
                     "command failed, fail through to FCF "
                     "dead event\n");
             spin_lock_irq(&phba->hbalock);
             phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
             spin_unlock_irq(&phba->hbalock);
             /*
              * Last resort will fail over by treating this
              * as a link down to FCF registration.
              */
             lpfc_sli4_fcf_dead_failthrough(phba);
         } else {
             /* Reset FCF roundrobin bmask for new discovery */
             lpfc_sli4_clear_fcf_rr_bmask(phba);
             /*
              * Handling fast FCF failover to a DEAD FCF event is
              * considered equalivant to receiving CVL to all vports.
              */
             lpfc_sli4_perform_all_vport_cvl(phba);
         }
         break;
     case LPFC_FIP_EVENT_TYPE_CVL:
         phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
         lpfc_printf_log(phba, KERN_ERR,
                 LOG_TRACE_EVENT,
             "2718 Clear Virtual Link Received for VPI 0x%x"
             " tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag);
 
         vport = lpfc_find_vport_by_vpid(phba,
                         acqe_fip->index);
         ndlp = lpfc_sli4_perform_vport_cvl(vport);
         if (!ndlp)
             break;
         active_vlink_present = 0;
 
         vports = lpfc_create_vport_work_array(phba);
         if (vports) {
             for (i = 0; i <= phba->max_vports && vports[i] != NULL;
                     i++) {
                 if ((!(vports[i]->fc_flag &
                     FC_VPORT_CVL_RCVD)) &&
                     (vports[i]->port_state > LPFC_FDISC)) {
                     active_vlink_present = 1;
                     break;
                 }
             }
             lpfc_destroy_vport_work_array(phba, vports);
         }
 
         /*
          * Don't re-instantiate if vport is marked for deletion.
          * If we are here first then vport_delete is going to wait
          * for discovery to complete.
          */
         if (!(vport->load_flag & FC_UNLOADING) &&
                     active_vlink_present) {
             /*
              * If there are other active VLinks present,
              * re-instantiate the Vlink using FDISC.
              */
             mod_timer(&ndlp->nlp_delayfunc,
                   jiffies + msecs_to_jiffies(1000));
             spin_lock_irq(&ndlp->lock);
             ndlp->nlp_flag |= NLP_DELAY_TMO;
             spin_unlock_irq(&ndlp->lock);
             ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
             vport->port_state = LPFC_FDISC;
         } else {
             /*
              * Otherwise, we request port to rediscover
              * the entire FCF table for a fast recovery
              * from possible case that the current FCF
              * is no longer valid if we are not already
              * in the FCF failover process.
              */
             spin_lock_irq(&phba->hbalock);
             if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
                 spin_unlock_irq(&phba->hbalock);
                 break;
             }
             /* Mark the fast failover process in progress */
             phba->fcf.fcf_flag |= FCF_ACVL_DISC;
             spin_unlock_irq(&phba->hbalock);
             lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
                     LOG_DISCOVERY,
                     "2773 Start FCF failover per CVL, "
                     "evt_tag:x%x\n", acqe_fip->event_tag);
             rc = lpfc_sli4_redisc_fcf_table(phba);
             if (rc) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
                         LOG_TRACE_EVENT,
                         "2774 Issue FCF rediscover "
                         "mailbox command failed, "
                         "through to CVL event\n");
                 spin_lock_irq(&phba->hbalock);
                 phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
                 spin_unlock_irq(&phba->hbalock);
                 /*
                  * Last resort will be re-try on the
                  * the current registered FCF entry.
                  */
                 lpfc_retry_pport_discovery(phba);
             } else
                 /*
                  * Reset FCF roundrobin bmask for new
                  * discovery.
                  */
                 lpfc_sli4_clear_fcf_rr_bmask(phba);
         }
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0288 Unknown FCoE event type 0x%x event tag "
                 "0x%x\n", event_type, acqe_fip->event_tag);
         break;
     }
 }
 
 /**
  * lpfc_sli4_async_dcbx_evt - Process the asynchronous dcbx event
  * @phba: pointer to lpfc hba data structure.
  * @acqe_dcbx: pointer to the async dcbx completion queue entry.
  *
  * This routine is to handle the SLI4 asynchronous dcbx event.
  **/
 static void
 lpfc_sli4_async_dcbx_evt(struct lpfc_hba *phba,
              struct lpfc_acqe_dcbx *acqe_dcbx)
 {
     phba->fc_eventTag = acqe_dcbx->event_tag;
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "0290 The SLI4 DCBX asynchronous event is not "
             "handled yet\n");
 }
 
 /**
  * lpfc_sli4_async_grp5_evt - Process the asynchronous group5 event
  * @phba: pointer to lpfc hba data structure.
  * @acqe_grp5: pointer to the async grp5 completion queue entry.
  *
  * This routine is to handle the SLI4 asynchronous grp5 event. A grp5 event
  * is an asynchronous notified of a logical link speed change.  The Port
  * reports the logical link speed in units of 10Mbps.
  **/
 static void
 lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba,
              struct lpfc_acqe_grp5 *acqe_grp5)
 {
     uint16_t prev_ll_spd;
 
     phba->fc_eventTag = acqe_grp5->event_tag;
     phba->fcoe_eventtag = acqe_grp5->event_tag;
     prev_ll_spd = phba->sli4_hba.link_state.logical_speed;
     phba->sli4_hba.link_state.logical_speed =
         (bf_get(lpfc_acqe_grp5_llink_spd, acqe_grp5)) * 10;
     lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
             "2789 GRP5 Async Event: Updating logical link speed "
             "from %dMbps to %dMbps\n", prev_ll_spd,
             phba->sli4_hba.link_state.logical_speed);
 }
 
 /**
  * lpfc_sli4_async_cmstat_evt - Process the asynchronous cmstat event
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is to handle the SLI4 asynchronous cmstat event. A cmstat event
  * is an asynchronous notification of a request to reset CM stats.
  **/
 static void
 lpfc_sli4_async_cmstat_evt(struct lpfc_hba *phba)
 {
     if (!phba->cgn_i)
         return;
     lpfc_init_congestion_stat(phba);
 }
 
 /**
  * lpfc_cgn_params_val - Validate FW congestion parameters.
  * @phba: pointer to lpfc hba data structure.
  * @p_cfg_param: pointer to FW provided congestion parameters.
  *
  * This routine validates the congestion parameters passed
  * by the FW to the driver via an ACQE event.
  **/
 static void
 lpfc_cgn_params_val(struct lpfc_hba *phba, struct lpfc_cgn_param *p_cfg_param)
 {
     spin_lock_irq(&phba->hbalock);
 
     if (!lpfc_rangecheck(p_cfg_param->cgn_param_mode, LPFC_CFG_OFF,
                  LPFC_CFG_MONITOR)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT,
                 "6225 CMF mode param out of range: %d\n",
                  p_cfg_param->cgn_param_mode);
         p_cfg_param->cgn_param_mode = LPFC_CFG_OFF;
     }
 
     spin_unlock_irq(&phba->hbalock);
 }
 
 /**
  * lpfc_cgn_params_parse - Process a FW cong parm change event
  * @phba: pointer to lpfc hba data structure.
  * @p_cgn_param: pointer to a data buffer with the FW cong params.
  * @len: the size of pdata in bytes.
  *
  * This routine validates the congestion management buffer signature
  * from the FW, validates the contents and makes corrections for
  * valid, in-range values.  If the signature magic is correct and
  * after parameter validation, the contents are copied to the driver's
  * @phba structure. If the magic is incorrect, an error message is
  * logged.
  **/
 static void
 lpfc_cgn_params_parse(struct lpfc_hba *phba,
               struct lpfc_cgn_param *p_cgn_param, uint32_t len)
 {
     struct lpfc_cgn_info *cp;
     uint32_t crc, oldmode;
 
     /* Make sure the FW has encoded the correct magic number to
      * validate the congestion parameter in FW memory.
      */
     if (p_cgn_param->cgn_param_magic == LPFC_CFG_PARAM_MAGIC_NUM) {
         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT,
                 "4668 FW cgn parm buffer data: "
                 "magic 0x%x version %d mode %d "
                 "level0 %d level1 %d "
                 "level2 %d byte13 %d "
                 "byte14 %d byte15 %d "
                 "byte11 %d byte12 %d activeMode %d\n",
                 p_cgn_param->cgn_param_magic,
                 p_cgn_param->cgn_param_version,
                 p_cgn_param->cgn_param_mode,
                 p_cgn_param->cgn_param_level0,
                 p_cgn_param->cgn_param_level1,
                 p_cgn_param->cgn_param_level2,
                 p_cgn_param->byte13,
                 p_cgn_param->byte14,
                 p_cgn_param->byte15,
                 p_cgn_param->byte11,
                 p_cgn_param->byte12,
                 phba->cmf_active_mode);
 
         oldmode = phba->cmf_active_mode;
 
         /* Any parameters out of range are corrected to defaults
          * by this routine.  No need to fail.
          */
         lpfc_cgn_params_val(phba, p_cgn_param);
 
         /* Parameters are verified, move them into driver storage */
         spin_lock_irq(&phba->hbalock);
         memcpy(&phba->cgn_p, p_cgn_param,
                sizeof(struct lpfc_cgn_param));
 
         /* Update parameters in congestion info buffer now */
         if (phba->cgn_i) {
             cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
             cp->cgn_info_mode = phba->cgn_p.cgn_param_mode;
             cp->cgn_info_level0 = phba->cgn_p.cgn_param_level0;
             cp->cgn_info_level1 = phba->cgn_p.cgn_param_level1;
             cp->cgn_info_level2 = phba->cgn_p.cgn_param_level2;
             crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ,
                           LPFC_CGN_CRC32_SEED);
             cp->cgn_info_crc = cpu_to_le32(crc);
         }
         spin_unlock_irq(&phba->hbalock);
 
         phba->cmf_active_mode = phba->cgn_p.cgn_param_mode;
 
         switch (oldmode) {
         case LPFC_CFG_OFF:
             if (phba->cgn_p.cgn_param_mode != LPFC_CFG_OFF) {
                 /* Turning CMF on */
                 lpfc_cmf_start(phba);
 
                 if (phba->link_state >= LPFC_LINK_UP) {
                     phba->cgn_reg_fpin =
                         phba->cgn_init_reg_fpin;
                     phba->cgn_reg_signal =
                         phba->cgn_init_reg_signal;
                     lpfc_issue_els_edc(phba->pport, 0);
                 }
             }
             break;
         case LPFC_CFG_MANAGED:
             switch (phba->cgn_p.cgn_param_mode) {
             case LPFC_CFG_OFF:
                 /* Turning CMF off */
                 lpfc_cmf_stop(phba);
                 if (phba->link_state >= LPFC_LINK_UP)
                     lpfc_issue_els_edc(phba->pport, 0);
                 break;
             case LPFC_CFG_MONITOR:
                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                         "4661 Switch from MANAGED to "
                         "`MONITOR mode\n");
                 phba->cmf_max_bytes_per_interval =
                     phba->cmf_link_byte_count;
 
                 /* Resume blocked IO - unblock on workqueue */
                 queue_work(phba->wq,
                        &phba->unblock_request_work);
                 break;
             }
             break;
         case LPFC_CFG_MONITOR:
             switch (phba->cgn_p.cgn_param_mode) {
             case LPFC_CFG_OFF:
                 /* Turning CMF off */
                 lpfc_cmf_stop(phba);
                 if (phba->link_state >= LPFC_LINK_UP)
                     lpfc_issue_els_edc(phba->pport, 0);
                 break;
             case LPFC_CFG_MANAGED:
                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                         "4662 Switch from MONITOR to "
                         "MANAGED mode\n");
                 lpfc_cmf_signal_init(phba);
                 break;
             }
             break;
         }
     } else {
         lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
                 "4669 FW cgn parm buf wrong magic 0x%x "
                 "version %d\n", p_cgn_param->cgn_param_magic,
                 p_cgn_param->cgn_param_version);
     }
 }
 
 /**
  * lpfc_sli4_cgn_params_read - Read and Validate FW congestion parameters.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine issues a read_object mailbox command to
  * get the congestion management parameters from the FW
  * parses it and updates the driver maintained values.
  *
  * Returns
  *  0     if the object was empty
  *  -Eval if an error was encountered
  *  Count if bytes were read from object
  **/
 int
 lpfc_sli4_cgn_params_read(struct lpfc_hba *phba)
 {
     int ret = 0;
     struct lpfc_cgn_param *p_cgn_param = NULL;
     u32 *pdata = NULL;
     u32 len = 0;
 
     /* Find out if the FW has a new set of congestion parameters. */
     len = sizeof(struct lpfc_cgn_param);
     pdata = kzalloc(len, GFP_KERNEL);
     ret = lpfc_read_object(phba, (char *)LPFC_PORT_CFG_NAME,
                    pdata, len);
 
     /* 0 means no data.  A negative means error.  A positive means
      * bytes were copied.
      */
     if (!ret) {
         lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
                 "4670 CGN RD OBJ returns no data\n");
         goto rd_obj_err;
     } else if (ret < 0) {
         /* Some error.  Just exit and return it to the caller.*/
         goto rd_obj_err;
     }
 
     lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT,
             "6234 READ CGN PARAMS Successful %d\n", len);
 
     /* Parse data pointer over len and update the phba congestion
      * parameters with values passed back.  The receive rate values
      * may have been altered in FW, but take no action here.
      */
     p_cgn_param = (struct lpfc_cgn_param *)pdata;
     lpfc_cgn_params_parse(phba, p_cgn_param, len);
 
  rd_obj_err:
     kfree(pdata);
     return ret;
 }
 
 /**
  * lpfc_sli4_cgn_parm_chg_evt - Process a FW congestion param change event
  * @phba: pointer to lpfc hba data structure.
  *
  * The FW generated Async ACQE SLI event calls this routine when
  * the event type is an SLI Internal Port Event and the Event Code
  * indicates a change to the FW maintained congestion parameters.
  *
  * This routine executes a Read_Object mailbox call to obtain the
  * current congestion parameters maintained in FW and corrects
  * the driver's active congestion parameters.
  *
  * The acqe event is not passed because there is no further data
  * required.
  *
  * Returns nonzero error if event processing encountered an error.
  * Zero otherwise for success.
  **/
 static int
 lpfc_sli4_cgn_parm_chg_evt(struct lpfc_hba *phba)
 {
     int ret = 0;
 
     if (!phba->sli4_hba.pc_sli4_params.cmf) {
         lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
                 "4664 Cgn Evt when E2E off. Drop event\n");
         return -EACCES;
     }
 
     /* If the event is claiming an empty object, it's ok.  A write
      * could have cleared it.  Only error is a negative return
      * status.
      */
     ret = lpfc_sli4_cgn_params_read(phba);
     if (ret < 0) {
         lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
                 "4667 Error reading Cgn Params (%d)\n",
                 ret);
     } else if (!ret) {
         lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
                 "4673 CGN Event empty object.\n");
     }
     return ret;
 }
 
 /**
  * lpfc_sli4_async_event_proc - Process all the pending asynchronous event
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked by the worker thread to process all the pending
  * SLI4 asynchronous events.
  **/
 void lpfc_sli4_async_event_proc(struct lpfc_hba *phba)
 {
     struct lpfc_cq_event *cq_event;
     unsigned long iflags;
 
     /* First, declare the async event has been handled */
     spin_lock_irqsave(&phba->hbalock, iflags);
     phba->hba_flag &= ~ASYNC_EVENT;
     spin_unlock_irqrestore(&phba->hbalock, iflags);
 
     /* Now, handle all the async events */
     spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
     while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) {
         list_remove_head(&phba->sli4_hba.sp_asynce_work_queue,
                  cq_event, struct lpfc_cq_event, list);
         spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock,
                        iflags);
 
         /* Process the asynchronous event */
         switch (bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)) {
         case LPFC_TRAILER_CODE_LINK:
             lpfc_sli4_async_link_evt(phba,
                          &cq_event->cqe.acqe_link);
             break;
         case LPFC_TRAILER_CODE_FCOE:
             lpfc_sli4_async_fip_evt(phba, &cq_event->cqe.acqe_fip);
             break;
         case LPFC_TRAILER_CODE_DCBX:
             lpfc_sli4_async_dcbx_evt(phba,
                          &cq_event->cqe.acqe_dcbx);
             break;
         case LPFC_TRAILER_CODE_GRP5:
             lpfc_sli4_async_grp5_evt(phba,
                          &cq_event->cqe.acqe_grp5);
             break;
         case LPFC_TRAILER_CODE_FC:
             lpfc_sli4_async_fc_evt(phba, &cq_event->cqe.acqe_fc);
             break;
         case LPFC_TRAILER_CODE_SLI:
             lpfc_sli4_async_sli_evt(phba, &cq_event->cqe.acqe_sli);
             break;
         case LPFC_TRAILER_CODE_CMSTAT:
             lpfc_sli4_async_cmstat_evt(phba);
             break;
         default:
             lpfc_printf_log(phba, KERN_ERR,
                     LOG_TRACE_EVENT,
                     "1804 Invalid asynchronous event code: "
                     "x%x\n", bf_get(lpfc_trailer_code,
                     &cq_event->cqe.mcqe_cmpl));
             break;
         }
 
         /* Free the completion event processed to the free pool */
         lpfc_sli4_cq_event_release(phba, cq_event);
         spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
     }
     spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock, iflags);
 }
 
 /**
  * lpfc_sli4_fcf_redisc_event_proc - Process fcf table rediscovery event
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked by the worker thread to process FCF table
  * rediscovery pending completion event.
  **/
 void lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba *phba)
 {
     int rc;
 
     spin_lock_irq(&phba->hbalock);
     /* Clear FCF rediscovery timeout event */
     phba->fcf.fcf_flag &= ~FCF_REDISC_EVT;
     /* Clear driver fast failover FCF record flag */
     phba->fcf.failover_rec.flag = 0;
     /* Set state for FCF fast failover */
     phba->fcf.fcf_flag |= FCF_REDISC_FOV;
     spin_unlock_irq(&phba->hbalock);
 
     /* Scan FCF table from the first entry to re-discover SAN */
     lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
             "2777 Start post-quiescent FCF table scan\n");
     rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
     if (rc)
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2747 Issue FCF scan read FCF mailbox "
                 "command failed 0x%x\n", rc);
 }
 
 /**
  * lpfc_api_table_setup - Set up per hba pci-device group func api jump table
  * @phba: pointer to lpfc hba data structure.
  * @dev_grp: The HBA PCI-Device group number.
  *
  * This routine is invoked to set up the per HBA PCI-Device group function
  * API jump table entries.
  *
  * Return: 0 if success, otherwise -ENODEV
  **/
 int
 lpfc_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
 {
     int rc;
 
     /* Set up lpfc PCI-device group */
     phba->pci_dev_grp = dev_grp;
 
     /* The LPFC_PCI_DEV_OC uses SLI4 */
     if (dev_grp == LPFC_PCI_DEV_OC)
         phba->sli_rev = LPFC_SLI_REV4;
 
     /* Set up device INIT API function jump table */
     rc = lpfc_init_api_table_setup(phba, dev_grp);
     if (rc)
         return -ENODEV;
     /* Set up SCSI API function jump table */
     rc = lpfc_scsi_api_table_setup(phba, dev_grp);
     if (rc)
         return -ENODEV;
     /* Set up SLI API function jump table */
     rc = lpfc_sli_api_table_setup(phba, dev_grp);
     if (rc)
         return -ENODEV;
     /* Set up MBOX API function jump table */
     rc = lpfc_mbox_api_table_setup(phba, dev_grp);
     if (rc)
         return -ENODEV;
 
     return 0;
 }
 
 /**
  * lpfc_log_intr_mode - Log the active interrupt mode
  * @phba: pointer to lpfc hba data structure.
  * @intr_mode: active interrupt mode adopted.
  *
  * This routine it invoked to log the currently used active interrupt mode
  * to the device.
  **/
 static void lpfc_log_intr_mode(struct lpfc_hba *phba, uint32_t intr_mode)
 {
     switch (intr_mode) {
     case 0:
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "0470 Enable INTx interrupt mode.\n");
         break;
     case 1:
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "0481 Enabled MSI interrupt mode.\n");
         break;
     case 2:
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "0480 Enabled MSI-X interrupt mode.\n");
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0482 Illegal interrupt mode.\n");
         break;
     }
     return;
 }
 
 /**
  * lpfc_enable_pci_dev - Enable a generic PCI device.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to enable the PCI device that is common to all
  * PCI devices.
  *
  * Return codes
  *  0 - successful
  *  other values - error
  **/
 static int
 lpfc_enable_pci_dev(struct lpfc_hba *phba)
 {
     struct pci_dev *pdev;
 
     /* Obtain PCI device reference */
     if (!phba->pcidev)
         goto out_error;
     else
         pdev = phba->pcidev;
     /* Enable PCI device */
     if (pci_enable_device_mem(pdev))
         goto out_error;
     /* Request PCI resource for the device */
     if (pci_request_mem_regions(pdev, LPFC_DRIVER_NAME))
         goto out_disable_device;
     /* Set up device as PCI master and save state for EEH */
     pci_set_master(pdev);
     pci_try_set_mwi(pdev);
     pci_save_state(pdev);
 
     /* PCIe EEH recovery on powerpc platforms needs fundamental reset */
     if (pci_is_pcie(pdev))
         pdev->needs_freset = 1;
 
     return 0;
 
 out_disable_device:
     pci_disable_device(pdev);
 out_error:
     lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
             "1401 Failed to enable pci device\n");
     return -ENODEV;
 }
 
 /**
  * lpfc_disable_pci_dev - Disable a generic PCI device.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to disable the PCI device that is common to all
  * PCI devices.
  **/
 static void
 lpfc_disable_pci_dev(struct lpfc_hba *phba)
 {
     struct pci_dev *pdev;
 
     /* Obtain PCI device reference */
     if (!phba->pcidev)
         return;
     else
         pdev = phba->pcidev;
     /* Release PCI resource and disable PCI device */
     pci_release_mem_regions(pdev);
     pci_disable_device(pdev);
 
     return;
 }
 
 /**
  * lpfc_reset_hba - Reset a hba
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to reset a hba device. It brings the HBA
  * offline, performs a board restart, and then brings the board back
  * online. The lpfc_offline calls lpfc_sli_hba_down which will clean up
  * on outstanding mailbox commands.
  **/
 void
 lpfc_reset_hba(struct lpfc_hba *phba)
 {
     /* If resets are disabled then set error state and return. */
     if (!phba->cfg_enable_hba_reset) {
         phba->link_state = LPFC_HBA_ERROR;
         return;
     }
 
     /* If not LPFC_SLI_ACTIVE, force all IO to be flushed */
     if (phba->sli.sli_flag & LPFC_SLI_ACTIVE) {
         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
     } else {
         lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
         lpfc_sli_flush_io_rings(phba);
     }
     lpfc_offline(phba);
     lpfc_sli_brdrestart(phba);
     lpfc_online(phba);
     lpfc_unblock_mgmt_io(phba);
 }
 
 /**
  * lpfc_sli_sriov_nr_virtfn_get - Get the number of sr-iov virtual functions
  * @phba: pointer to lpfc hba data structure.
  *
  * This function enables the PCI SR-IOV virtual functions to a physical
  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
  * enable the number of virtual functions to the physical function. As
  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
  * API call does not considered as an error condition for most of the device.
  **/
 uint16_t
 lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba *phba)
 {
     struct pci_dev *pdev = phba->pcidev;
     uint16_t nr_virtfn;
     int pos;
 
     pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
     if (pos == 0)
         return 0;
 
     pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, &nr_virtfn);
     return nr_virtfn;
 }
 
 /**
  * lpfc_sli_probe_sriov_nr_virtfn - Enable a number of sr-iov virtual functions
  * @phba: pointer to lpfc hba data structure.
  * @nr_vfn: number of virtual functions to be enabled.
  *
  * This function enables the PCI SR-IOV virtual functions to a physical
  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
  * enable the number of virtual functions to the physical function. As
  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
  * API call does not considered as an error condition for most of the device.
  **/
 int
 lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn)
 {
     struct pci_dev *pdev = phba->pcidev;
     uint16_t max_nr_vfn;
     int rc;
 
     max_nr_vfn = lpfc_sli_sriov_nr_virtfn_get(phba);
     if (nr_vfn > max_nr_vfn) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3057 Requested vfs (%d) greater than "
                 "supported vfs (%d)", nr_vfn, max_nr_vfn);
         return -EINVAL;
     }
 
     rc = pci_enable_sriov(pdev, nr_vfn);
     if (rc) {
         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                 "2806 Failed to enable sriov on this device "
                 "with vfn number nr_vf:%d, rc:%d\n",
                 nr_vfn, rc);
     } else
         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                 "2807 Successful enable sriov on this device "
                 "with vfn number nr_vf:%d\n", nr_vfn);
     return rc;
 }
 
 static void
 lpfc_unblock_requests_work(struct work_struct *work)
 {
     struct lpfc_hba *phba = container_of(work, struct lpfc_hba,
                          unblock_request_work);
 
     lpfc_unblock_requests(phba);
 }
 
 /**
  * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to set up the driver internal resources before the
  * device specific resource setup to support the HBA device it attached to.
  *
  * Return codes
  *  0 - successful
  *  other values - error
  **/
 static int
 lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba)
 {
     struct lpfc_sli *psli = &phba->sli;
 
     /*
      * Driver resources common to all SLI revisions
      */
     atomic_set(&phba->fast_event_count, 0);
     atomic_set(&phba->dbg_log_idx, 0);
     atomic_set(&phba->dbg_log_cnt, 0);
     atomic_set(&phba->dbg_log_dmping, 0);
     spin_lock_init(&phba->hbalock);
 
     /* Initialize port_list spinlock */
     spin_lock_init(&phba->port_list_lock);
     INIT_LIST_HEAD(&phba->port_list);
 
     INIT_LIST_HEAD(&phba->work_list);
 
     /* Initialize the wait queue head for the kernel thread */
     init_waitqueue_head(&phba->work_waitq);
 
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "1403 Protocols supported %s %s %s\n",
             ((phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) ?
                 "SCSI" : " "),
             ((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) ?
                 "NVME" : " "),
             (phba->nvmet_support ? "NVMET" : " "));
 
     /* Initialize the IO buffer list used by driver for SLI3 SCSI */
     spin_lock_init(&phba->scsi_buf_list_get_lock);
     INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_get);
     spin_lock_init(&phba->scsi_buf_list_put_lock);
     INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
 
     /* Initialize the fabric iocb list */
     INIT_LIST_HEAD(&phba->fabric_iocb_list);
 
     /* Initialize list to save ELS buffers */
     INIT_LIST_HEAD(&phba->elsbuf);
 
     /* Initialize FCF connection rec list */
     INIT_LIST_HEAD(&phba->fcf_conn_rec_list);
 
     /* Initialize OAS configuration list */
     spin_lock_init(&phba->devicelock);
     INIT_LIST_HEAD(&phba->luns);
 
     /* MBOX heartbeat timer */
     timer_setup(&psli->mbox_tmo, lpfc_mbox_timeout, 0);
     /* Fabric block timer */
     timer_setup(&phba->fabric_block_timer, lpfc_fabric_block_timeout, 0);
     /* EA polling mode timer */
     timer_setup(&phba->eratt_poll, lpfc_poll_eratt, 0);
     /* Heartbeat timer */
     timer_setup(&phba->hb_tmofunc, lpfc_hb_timeout, 0);
 
     INIT_DELAYED_WORK(&phba->eq_delay_work, lpfc_hb_eq_delay_work);
 
     INIT_DELAYED_WORK(&phba->idle_stat_delay_work,
               lpfc_idle_stat_delay_work);
     INIT_WORK(&phba->unblock_request_work, lpfc_unblock_requests_work);
     return 0;
 }
 
 /**
  * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to set up the driver internal resources specific to
  * support the SLI-3 HBA device it attached to.
  *
  * Return codes
  * 0 - successful
  * other values - error
  **/
 static int
 lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
 {
     int rc, entry_sz;
 
     /*
      * Initialize timers used by driver
      */
 
     /* FCP polling mode timer */
     timer_setup(&phba->fcp_poll_timer, lpfc_poll_timeout, 0);
 
     /* Host attention work mask setup */
     phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);
     phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));
 
     /* Get all the module params for configuring this host */
     lpfc_get_cfgparam(phba);
     /* Set up phase-1 common device driver resources */
 
     rc = lpfc_setup_driver_resource_phase1(phba);
     if (rc)
         return -ENODEV;
 
     if (!phba->sli.sli3_ring)
         phba->sli.sli3_ring = kcalloc(LPFC_SLI3_MAX_RING,
                           sizeof(struct lpfc_sli_ring),
                           GFP_KERNEL);
     if (!phba->sli.sli3_ring)
         return -ENOMEM;
 
     /*
      * Since lpfc_sg_seg_cnt is module parameter, the sg_dma_buf_size
      * used to create the sg_dma_buf_pool must be dynamically calculated.
      */
 
     if (phba->sli_rev == LPFC_SLI_REV4)
         entry_sz = sizeof(struct sli4_sge);
     else
         entry_sz = sizeof(struct ulp_bde64);
 
     /* There are going to be 2 reserved BDEs: 1 FCP cmnd + 1 FCP rsp */
     if (phba->cfg_enable_bg) {
         /*
          * The scsi_buf for a T10-DIF I/O will hold the FCP cmnd,
          * the FCP rsp, and a BDE for each. Sice we have no control
          * over how many protection data segments the SCSI Layer
          * will hand us (ie: there could be one for every block
          * in the IO), we just allocate enough BDEs to accomidate
          * our max amount and we need to limit lpfc_sg_seg_cnt to
          * minimize the risk of running out.
          */
         phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
             sizeof(struct fcp_rsp) +
             (LPFC_MAX_SG_SEG_CNT * entry_sz);
 
         if (phba->cfg_sg_seg_cnt > LPFC_MAX_SG_SEG_CNT_DIF)
             phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT_DIF;
 
         /* Total BDEs in BPL for scsi_sg_list and scsi_sg_prot_list */
         phba->cfg_total_seg_cnt = LPFC_MAX_SG_SEG_CNT;
     } else {
         /*
          * The scsi_buf for a regular I/O will hold the FCP cmnd,
          * the FCP rsp, a BDE for each, and a BDE for up to
          * cfg_sg_seg_cnt data segments.
          */
         phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
             sizeof(struct fcp_rsp) +
             ((phba->cfg_sg_seg_cnt + 2) * entry_sz);
 
         /* Total BDEs in BPL for scsi_sg_list */
         phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + 2;
     }
 
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
             "9088 INIT sg_tablesize:%d dmabuf_size:%d total_bde:%d\n",
             phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,
             phba->cfg_total_seg_cnt);
 
     phba->max_vpi = LPFC_MAX_VPI;
     /* This will be set to correct value after config_port mbox */
     phba->max_vports = 0;
 
     /*
      * Initialize the SLI Layer to run with lpfc HBAs.
      */
     lpfc_sli_setup(phba);
     lpfc_sli_queue_init(phba);
 
     /* Allocate device driver memory */
     if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ))
         return -ENOMEM;
 
     phba->lpfc_sg_dma_buf_pool =
         dma_pool_create("lpfc_sg_dma_buf_pool",
                 &phba->pcidev->dev, phba->cfg_sg_dma_buf_size,
                 BPL_ALIGN_SZ, 0);
 
     if (!phba->lpfc_sg_dma_buf_pool)
         goto fail_free_mem;
 
     phba->lpfc_cmd_rsp_buf_pool =
             dma_pool_create("lpfc_cmd_rsp_buf_pool",
                     &phba->pcidev->dev,
                     sizeof(struct fcp_cmnd) +
                     sizeof(struct fcp_rsp),
                     BPL_ALIGN_SZ, 0);
 
     if (!phba->lpfc_cmd_rsp_buf_pool)
         goto fail_free_dma_buf_pool;
 
     /*
      * Enable sr-iov virtual functions if supported and configured
      * through the module parameter.
      */
     if (phba->cfg_sriov_nr_virtfn > 0) {
         rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
                          phba->cfg_sriov_nr_virtfn);
         if (rc) {
             lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                     "2808 Requested number of SR-IOV "
                     "virtual functions (%d) is not "
                     "supported\n",
                     phba->cfg_sriov_nr_virtfn);
             phba->cfg_sriov_nr_virtfn = 0;
         }
     }
 
     return 0;
 
 fail_free_dma_buf_pool:
     dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
     phba->lpfc_sg_dma_buf_pool = NULL;
 fail_free_mem:
     lpfc_mem_free(phba);
     return -ENOMEM;
 }
 
 /**
  * lpfc_sli_driver_resource_unset - Unset drvr internal resources for SLI3 dev
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to unset the driver internal resources set up
  * specific for supporting the SLI-3 HBA device it attached to.
  **/
 static void
 lpfc_sli_driver_resource_unset(struct lpfc_hba *phba)
 {
     /* Free device driver memory allocated */
     lpfc_mem_free_all(phba);
 
     return;
 }
 
 /**
  * lpfc_sli4_driver_resource_setup - Setup drvr internal resources for SLI4 dev
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to set up the driver internal resources specific to
  * support the SLI-4 HBA device it attached to.
  *
  * Return codes
  *  0 - successful
  *  other values - error
  **/
 static int
 lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
 {
     LPFC_MBOXQ_t *mboxq;
     MAILBOX_t *mb;
     int rc, i, max_buf_size;
     int longs;
     int extra;
     uint64_t wwn;
     u32 if_type;
     u32 if_fam;
 
     phba->sli4_hba.num_present_cpu = lpfc_present_cpu;
     phba->sli4_hba.num_possible_cpu = cpumask_last(cpu_possible_mask) + 1;
     phba->sli4_hba.curr_disp_cpu = 0;
 
     /* Get all the module params for configuring this host */
     lpfc_get_cfgparam(phba);
 
     /* Set up phase-1 common device driver resources */
     rc = lpfc_setup_driver_resource_phase1(phba);
     if (rc)
         return -ENODEV;
 
     /* Before proceed, wait for POST done and device ready */
     rc = lpfc_sli4_post_status_check(phba);
     if (rc)
         return -ENODEV;
 
     /* Allocate all driver workqueues here */
 
     /* The lpfc_wq workqueue for deferred irq use */
     phba->wq = alloc_workqueue("lpfc_wq", WQ_MEM_RECLAIM, 0);
     if (!phba->wq)
         return -ENOMEM;
 
     /*
      * Initialize timers used by driver
      */
 
     timer_setup(&phba->rrq_tmr, lpfc_rrq_timeout, 0);
 
     /* FCF rediscover timer */
     timer_setup(&phba->fcf.redisc_wait, lpfc_sli4_fcf_redisc_wait_tmo, 0);
 
     /* CMF congestion timer */
     hrtimer_init(&phba->cmf_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
     phba->cmf_timer.function = lpfc_cmf_timer;
 
     /*
      * Control structure for handling external multi-buffer mailbox
      * command pass-through.
      */
     memset((uint8_t *)&phba->mbox_ext_buf_ctx, 0,
         sizeof(struct lpfc_mbox_ext_buf_ctx));
     INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
 
     phba->max_vpi = LPFC_MAX_VPI;
 
     /* This will be set to correct value after the read_config mbox */
     phba->max_vports = 0;
 
     /* 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;
 
     /*
      * For SLI4, instead of using ring 0 (LPFC_FCP_RING) for FCP commands
      * we will associate a new ring, for each EQ/CQ/WQ tuple.
      * The WQ create will allocate the ring.
      */
 
     /* Initialize buffer queue management fields */
     INIT_LIST_HEAD(&phba->hbqs[LPFC_ELS_HBQ].hbq_buffer_list);
     phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_sli4_rb_alloc;
     phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_sli4_rb_free;
 
     /* for VMID idle timeout if VMID is enabled */
     if (lpfc_is_vmid_enabled(phba))
         timer_setup(&phba->inactive_vmid_poll, lpfc_vmid_poll, 0);
 
     /*
      * Initialize the SLI Layer to run with lpfc SLI4 HBAs.
      */
     /* Initialize the Abort buffer list used by driver */
     spin_lock_init(&phba->sli4_hba.abts_io_buf_list_lock);
     INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_io_buf_list);
 
     if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
         /* Initialize the Abort nvme buffer list used by driver */
         spin_lock_init(&phba->sli4_hba.abts_nvmet_buf_list_lock);
         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_io_wait_list);
         spin_lock_init(&phba->sli4_hba.t_active_list_lock);
         INIT_LIST_HEAD(&phba->sli4_hba.t_active_ctx_list);
     }
 
     /* This abort list used by worker thread */
     spin_lock_init(&phba->sli4_hba.sgl_list_lock);
     spin_lock_init(&phba->sli4_hba.nvmet_io_wait_lock);
     spin_lock_init(&phba->sli4_hba.asynce_list_lock);
     spin_lock_init(&phba->sli4_hba.els_xri_abrt_list_lock);
 
     /*
      * Initialize driver internal slow-path work queues
      */
 
     /* Driver internel slow-path CQ Event pool */
     INIT_LIST_HEAD(&phba->sli4_hba.sp_cqe_event_pool);
     /* Response IOCB work queue list */
     INIT_LIST_HEAD(&phba->sli4_hba.sp_queue_event);
     /* Asynchronous event CQ Event work queue list */
     INIT_LIST_HEAD(&phba->sli4_hba.sp_asynce_work_queue);
     /* Slow-path XRI aborted CQ Event work queue list */
     INIT_LIST_HEAD(&phba->sli4_hba.sp_els_xri_aborted_work_queue);
     /* Receive queue CQ Event work queue list */
     INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue);
 
     /* Initialize extent block lists. */
     INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_blk_list);
     INIT_LIST_HEAD(&phba->sli4_hba.lpfc_xri_blk_list);
     INIT_LIST_HEAD(&phba->sli4_hba.lpfc_vfi_blk_list);
     INIT_LIST_HEAD(&phba->lpfc_vpi_blk_list);
 
     /* Initialize mboxq lists. If the early init routines fail
      * these lists need to be correctly initialized.
      */
     INIT_LIST_HEAD(&phba->sli.mboxq);
     INIT_LIST_HEAD(&phba->sli.mboxq_cmpl);
 
     /* initialize optic_state to 0xFF */
     phba->sli4_hba.lnk_info.optic_state = 0xff;
 
     /* Allocate device driver memory */
     rc = lpfc_mem_alloc(phba, SGL_ALIGN_SZ);
     if (rc)
         goto out_destroy_workqueue;
 
     /* IF Type 2 ports get initialized now. */
     if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
         LPFC_SLI_INTF_IF_TYPE_2) {
         rc = lpfc_pci_function_reset(phba);
         if (unlikely(rc)) {
             rc = -ENODEV;
             goto out_free_mem;
         }
         phba->temp_sensor_support = 1;
     }
 
     /* Create the bootstrap mailbox command */
     rc = lpfc_create_bootstrap_mbox(phba);
     if (unlikely(rc))
         goto out_free_mem;
 
     /* Set up the host's endian order with the device. */
     rc = lpfc_setup_endian_order(phba);
     if (unlikely(rc))
         goto out_free_bsmbx;
 
     /* Set up the hba's configuration parameters. */
     rc = lpfc_sli4_read_config(phba);
     if (unlikely(rc))
         goto out_free_bsmbx;
 
     if (phba->sli4_hba.fawwpn_flag & LPFC_FAWWPN_CONFIG) {
         /* Right now the link is down, if FA-PWWN is configured the
          * firmware will try FLOGI before the driver gets a link up.
          * If it fails, the driver should get a MISCONFIGURED async
          * event which will clear this flag. The only notification
          * the driver gets is if it fails, if it succeeds there is no
          * notification given. Assume success.
          */
         phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_FABRIC;
     }
 
     rc = lpfc_mem_alloc_active_rrq_pool_s4(phba);
     if (unlikely(rc))
         goto out_free_bsmbx;
 
     /* IF Type 0 ports get initialized now. */
     if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
         LPFC_SLI_INTF_IF_TYPE_0) {
         rc = lpfc_pci_function_reset(phba);
         if (unlikely(rc))
             goto out_free_bsmbx;
     }
 
     mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
                                GFP_KERNEL);
     if (!mboxq) {
         rc = -ENOMEM;
         goto out_free_bsmbx;
     }
 
     /* Check for NVMET being configured */
     phba->nvmet_support = 0;
     if (lpfc_enable_nvmet_cnt) {
 
         /* First get WWN of HBA instance */
         lpfc_read_nv(phba, mboxq);
         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
         if (rc != MBX_SUCCESS) {
             lpfc_printf_log(phba, KERN_ERR,
                     LOG_TRACE_EVENT,
                     "6016 Mailbox failed , mbxCmd x%x "
                     "READ_NV, mbxStatus x%x\n",
                     bf_get(lpfc_mqe_command, &mboxq->u.mqe),
                     bf_get(lpfc_mqe_status, &mboxq->u.mqe));
             mempool_free(mboxq, phba->mbox_mem_pool);
             rc = -EIO;
             goto out_free_bsmbx;
         }
         mb = &mboxq->u.mb;
         memcpy(&wwn, (char *)mb->un.varRDnvp.nodename,
                sizeof(uint64_t));
         wwn = cpu_to_be64(wwn);
         phba->sli4_hba.wwnn.u.name = wwn;
         memcpy(&wwn, (char *)mb->un.varRDnvp.portname,
                sizeof(uint64_t));
         /* wwn is WWPN of HBA instance */
         wwn = cpu_to_be64(wwn);
         phba->sli4_hba.wwpn.u.name = wwn;
 
         /* Check to see if it matches any module parameter */
         for (i = 0; i < lpfc_enable_nvmet_cnt; i++) {
             if (wwn == lpfc_enable_nvmet[i]) {
 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
                 if (lpfc_nvmet_mem_alloc(phba))
                     break;
 
                 phba->nvmet_support = 1; /* a match */
 
                 lpfc_printf_log(phba, KERN_ERR,
                         LOG_TRACE_EVENT,
                         "6017 NVME Target %016llx\n",
                         wwn);
 #else
                 lpfc_printf_log(phba, KERN_ERR,
                         LOG_TRACE_EVENT,
                         "6021 Can't enable NVME Target."
                         " NVME_TARGET_FC infrastructure"
                         " is not in kernel\n");
 #endif
                 /* Not supported for NVMET */
                 phba->cfg_xri_rebalancing = 0;
                 if (phba->irq_chann_mode == NHT_MODE) {
                     phba->cfg_irq_chann =
                         phba->sli4_hba.num_present_cpu;
                     phba->cfg_hdw_queue =
                         phba->sli4_hba.num_present_cpu;
                     phba->irq_chann_mode = NORMAL_MODE;
                 }
                 break;
             }
         }
     }
 
     lpfc_nvme_mod_param_dep(phba);
 
     /*
      * Get sli4 parameters that override parameters from Port capabilities.
      * If this call fails, it isn't critical unless the SLI4 parameters come
      * back in conflict.
      */
     rc = lpfc_get_sli4_parameters(phba, mboxq);
     if (rc) {
         if_type = bf_get(lpfc_sli_intf_if_type,
                  &phba->sli4_hba.sli_intf);
         if_fam = bf_get(lpfc_sli_intf_sli_family,
                 &phba->sli4_hba.sli_intf);
         if (phba->sli4_hba.extents_in_use &&
             phba->sli4_hba.rpi_hdrs_in_use) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2999 Unsupported SLI4 Parameters "
                     "Extents and RPI headers enabled.\n");
             if (if_type == LPFC_SLI_INTF_IF_TYPE_0 &&
                 if_fam ==  LPFC_SLI_INTF_FAMILY_BE2) {
                 mempool_free(mboxq, phba->mbox_mem_pool);
                 rc = -EIO;
                 goto out_free_bsmbx;
             }
         }
         if (!(if_type == LPFC_SLI_INTF_IF_TYPE_0 &&
               if_fam == LPFC_SLI_INTF_FAMILY_BE2)) {
             mempool_free(mboxq, phba->mbox_mem_pool);
             rc = -EIO;
             goto out_free_bsmbx;
         }
     }
 
     /*
      * 1 for cmd, 1 for rsp, NVME adds an extra one
      * for boundary conditions in its max_sgl_segment template.
      */
     extra = 2;
     if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
         extra++;
 
     /*
      * It doesn't matter what family our adapter is in, we are
      * limited to 2 Pages, 512 SGEs, for our SGL.
      * There are going to be 2 reserved SGEs: 1 FCP cmnd + 1 FCP rsp
      */
     max_buf_size = (2 * SLI4_PAGE_SIZE);
 
     /*
      * Since lpfc_sg_seg_cnt is module param, the sg_dma_buf_size
      * used to create the sg_dma_buf_pool must be calculated.
      */
     if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) {
         /* Both cfg_enable_bg and cfg_external_dif code paths */
 
         /*
          * The scsi_buf for a T10-DIF I/O holds the FCP cmnd,
          * the FCP rsp, and a SGE. Sice we have no control
          * over how many protection segments the SCSI Layer
          * will hand us (ie: there could be one for every block
          * in the IO), just allocate enough SGEs to accomidate
          * our max amount and we need to limit lpfc_sg_seg_cnt
          * to minimize the risk of running out.
          */
         phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
                 sizeof(struct fcp_rsp) + max_buf_size;
 
         /* Total SGEs for scsi_sg_list and scsi_sg_prot_list */
         phba->cfg_total_seg_cnt = LPFC_MAX_SGL_SEG_CNT;
 
         /*
          * If supporting DIF, reduce the seg count for scsi to
          * allow room for the DIF sges.
          */
         if (phba->cfg_enable_bg &&
             phba->cfg_sg_seg_cnt > LPFC_MAX_BG_SLI4_SEG_CNT_DIF)
             phba->cfg_scsi_seg_cnt = LPFC_MAX_BG_SLI4_SEG_CNT_DIF;
         else
             phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;
 
     } else {
         /*
          * The scsi_buf for a regular I/O holds the FCP cmnd,
          * the FCP rsp, a SGE for each, and a SGE for up to
          * cfg_sg_seg_cnt data segments.
          */
         phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
                 sizeof(struct fcp_rsp) +
                 ((phba->cfg_sg_seg_cnt + extra) *
                 sizeof(struct sli4_sge));
 
         /* Total SGEs for scsi_sg_list */
         phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + extra;
         phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;
 
         /*
          * NOTE: if (phba->cfg_sg_seg_cnt + extra) <= 256 we only
          * need to post 1 page for the SGL.
          */
     }
 
     if (phba->cfg_xpsgl && !phba->nvmet_support)
         phba->cfg_sg_dma_buf_size = LPFC_DEFAULT_XPSGL_SIZE;
     else if (phba->cfg_sg_dma_buf_size  <= LPFC_MIN_SG_SLI4_BUF_SZ)
         phba->cfg_sg_dma_buf_size = LPFC_MIN_SG_SLI4_BUF_SZ;
     else
         phba->cfg_sg_dma_buf_size =
                 SLI4_PAGE_ALIGN(phba->cfg_sg_dma_buf_size);
 
     phba->border_sge_num = phba->cfg_sg_dma_buf_size /
                    sizeof(struct sli4_sge);
 
     /* Limit to LPFC_MAX_NVME_SEG_CNT for NVME. */
     if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
         if (phba->cfg_sg_seg_cnt > LPFC_MAX_NVME_SEG_CNT) {
             lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT,
                     "6300 Reducing NVME sg segment "
                     "cnt to %d\n",
                     LPFC_MAX_NVME_SEG_CNT);
             phba->cfg_nvme_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
         } else
             phba->cfg_nvme_seg_cnt = phba->cfg_sg_seg_cnt;
     }
 
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
             "9087 sg_seg_cnt:%d dmabuf_size:%d "
             "total:%d scsi:%d nvme:%d\n",
             phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,
             phba->cfg_total_seg_cnt,  phba->cfg_scsi_seg_cnt,
             phba->cfg_nvme_seg_cnt);
 
     if (phba->cfg_sg_dma_buf_size < SLI4_PAGE_SIZE)
         i = phba->cfg_sg_dma_buf_size;
     else
         i = SLI4_PAGE_SIZE;
 
     phba->lpfc_sg_dma_buf_pool =
             dma_pool_create("lpfc_sg_dma_buf_pool",
                     &phba->pcidev->dev,
                     phba->cfg_sg_dma_buf_size,
                     i, 0);
     if (!phba->lpfc_sg_dma_buf_pool)
         goto out_free_bsmbx;
 
     phba->lpfc_cmd_rsp_buf_pool =
             dma_pool_create("lpfc_cmd_rsp_buf_pool",
                     &phba->pcidev->dev,
                     sizeof(struct fcp_cmnd) +
                     sizeof(struct fcp_rsp),
                     i, 0);
     if (!phba->lpfc_cmd_rsp_buf_pool)
         goto out_free_sg_dma_buf;
 
     mempool_free(mboxq, phba->mbox_mem_pool);
 
     /* Verify OAS is supported */
     lpfc_sli4_oas_verify(phba);
 
     /* Verify RAS support on adapter */
     lpfc_sli4_ras_init(phba);
 
     /* Verify all the SLI4 queues */
     rc = lpfc_sli4_queue_verify(phba);
     if (rc)
         goto out_free_cmd_rsp_buf;
 
     /* Create driver internal CQE event pool */
     rc = lpfc_sli4_cq_event_pool_create(phba);
     if (rc)
         goto out_free_cmd_rsp_buf;
 
     /* Initialize sgl lists per host */
     lpfc_init_sgl_list(phba);
 
     /* Allocate and initialize active sgl array */
     rc = lpfc_init_active_sgl_array(phba);
     if (rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "1430 Failed to initialize sgl list.\n");
         goto out_destroy_cq_event_pool;
     }
     rc = lpfc_sli4_init_rpi_hdrs(phba);
     if (rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "1432 Failed to initialize rpi headers.\n");
         goto out_free_active_sgl;
     }
 
     /* Allocate eligible FCF bmask memory for FCF roundrobin failover */
     longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG;
     phba->fcf.fcf_rr_bmask = kcalloc(longs, sizeof(unsigned long),
                      GFP_KERNEL);
     if (!phba->fcf.fcf_rr_bmask) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2759 Failed allocate memory for FCF round "
                 "robin failover bmask\n");
         rc = -ENOMEM;
         goto out_remove_rpi_hdrs;
     }
 
     phba->sli4_hba.hba_eq_hdl = kcalloc(phba->cfg_irq_chann,
                         sizeof(struct lpfc_hba_eq_hdl),
                         GFP_KERNEL);
     if (!phba->sli4_hba.hba_eq_hdl) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2572 Failed allocate memory for "
                 "fast-path per-EQ handle array\n");
         rc = -ENOMEM;
         goto out_free_fcf_rr_bmask;
     }
 
     phba->sli4_hba.cpu_map = kcalloc(phba->sli4_hba.num_possible_cpu,
                     sizeof(struct lpfc_vector_map_info),
                     GFP_KERNEL);
     if (!phba->sli4_hba.cpu_map) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3327 Failed allocate memory for msi-x "
                 "interrupt vector mapping\n");
         rc = -ENOMEM;
         goto out_free_hba_eq_hdl;
     }
 
     phba->sli4_hba.eq_info = alloc_percpu(struct lpfc_eq_intr_info);
     if (!phba->sli4_hba.eq_info) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3321 Failed allocation for per_cpu stats\n");
         rc = -ENOMEM;
         goto out_free_hba_cpu_map;
     }
 
     phba->sli4_hba.idle_stat = kcalloc(phba->sli4_hba.num_possible_cpu,
                        sizeof(*phba->sli4_hba.idle_stat),
                        GFP_KERNEL);
     if (!phba->sli4_hba.idle_stat) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3390 Failed allocation for idle_stat\n");
         rc = -ENOMEM;
         goto out_free_hba_eq_info;
     }
 
 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
     phba->sli4_hba.c_stat = alloc_percpu(struct lpfc_hdwq_stat);
     if (!phba->sli4_hba.c_stat) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3332 Failed allocating per cpu hdwq stats\n");
         rc = -ENOMEM;
         goto out_free_hba_idle_stat;
     }
 #endif
 
     phba->cmf_stat = alloc_percpu(struct lpfc_cgn_stat);
     if (!phba->cmf_stat) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3331 Failed allocating per cpu cgn stats\n");
         rc = -ENOMEM;
         goto out_free_hba_hdwq_info;
     }
 
     /*
      * Enable sr-iov virtual functions if supported and configured
      * through the module parameter.
      */
     if (phba->cfg_sriov_nr_virtfn > 0) {
         rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
                          phba->cfg_sriov_nr_virtfn);
         if (rc) {
             lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                     "3020 Requested number of SR-IOV "
                     "virtual functions (%d) is not "
                     "supported\n",
                     phba->cfg_sriov_nr_virtfn);
             phba->cfg_sriov_nr_virtfn = 0;
         }
     }
 
     return 0;
 
 out_free_hba_hdwq_info:
 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
     free_percpu(phba->sli4_hba.c_stat);
 out_free_hba_idle_stat:
 #endif
     kfree(phba->sli4_hba.idle_stat);
 out_free_hba_eq_info:
     free_percpu(phba->sli4_hba.eq_info);
 out_free_hba_cpu_map:
     kfree(phba->sli4_hba.cpu_map);
 out_free_hba_eq_hdl:
     kfree(phba->sli4_hba.hba_eq_hdl);
 out_free_fcf_rr_bmask:
     kfree(phba->fcf.fcf_rr_bmask);
 out_remove_rpi_hdrs:
     lpfc_sli4_remove_rpi_hdrs(phba);
 out_free_active_sgl:
     lpfc_free_active_sgl(phba);
 out_destroy_cq_event_pool:
     lpfc_sli4_cq_event_pool_destroy(phba);
 out_free_cmd_rsp_buf:
     dma_pool_destroy(phba->lpfc_cmd_rsp_buf_pool);
     phba->lpfc_cmd_rsp_buf_pool = NULL;
 out_free_sg_dma_buf:
     dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
     phba->lpfc_sg_dma_buf_pool = NULL;
 out_free_bsmbx:
     lpfc_destroy_bootstrap_mbox(phba);
 out_free_mem:
     lpfc_mem_free(phba);
 out_destroy_workqueue:
     destroy_workqueue(phba->wq);
     phba->wq = NULL;
     return rc;
 }
 
 /**
  * lpfc_sli4_driver_resource_unset - Unset drvr internal resources for SLI4 dev
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to unset the driver internal resources set up
  * specific for supporting the SLI-4 HBA device it attached to.
  **/
 static void
 lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
 {
     struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
 
     free_percpu(phba->sli4_hba.eq_info);
 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
     free_percpu(phba->sli4_hba.c_stat);
 #endif
     free_percpu(phba->cmf_stat);
     kfree(phba->sli4_hba.idle_stat);
 
     /* Free memory allocated for msi-x interrupt vector to CPU mapping */
     kfree(phba->sli4_hba.cpu_map);
     phba->sli4_hba.num_possible_cpu = 0;
     phba->sli4_hba.num_present_cpu = 0;
     phba->sli4_hba.curr_disp_cpu = 0;
     cpumask_clear(&phba->sli4_hba.irq_aff_mask);
 
     /* Free memory allocated for fast-path work queue handles */
     kfree(phba->sli4_hba.hba_eq_hdl);
 
     /* Free the allocated rpi headers. */
     lpfc_sli4_remove_rpi_hdrs(phba);
     lpfc_sli4_remove_rpis(phba);
 
     /* Free eligible FCF index bmask */
     kfree(phba->fcf.fcf_rr_bmask);
 
     /* Free the ELS sgl list */
     lpfc_free_active_sgl(phba);
     lpfc_free_els_sgl_list(phba);
     lpfc_free_nvmet_sgl_list(phba);
 
     /* Free the completion queue EQ event pool */
     lpfc_sli4_cq_event_release_all(phba);
     lpfc_sli4_cq_event_pool_destroy(phba);
 
     /* Release resource identifiers. */
     lpfc_sli4_dealloc_resource_identifiers(phba);
 
     /* Free the bsmbx region. */
     lpfc_destroy_bootstrap_mbox(phba);
 
     /* Free the SLI Layer memory with SLI4 HBAs */
     lpfc_mem_free_all(phba);
 
     /* Free the current connect table */
     list_for_each_entry_safe(conn_entry, next_conn_entry,
         &phba->fcf_conn_rec_list, list) {
         list_del_init(&conn_entry->list);
         kfree(conn_entry);
     }
 
     return;
 }
 
 /**
  * lpfc_init_api_table_setup - Set up init 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 device INIT interface API function jump table
  * in @phba struct.
  *
  * Returns: 0 - success, -ENODEV - failure.
  **/
 int
 lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
 {
     phba->lpfc_hba_init_link = lpfc_hba_init_link;
     phba->lpfc_hba_down_link = lpfc_hba_down_link;
     phba->lpfc_selective_reset = lpfc_selective_reset;
     switch (dev_grp) {
     case LPFC_PCI_DEV_LP:
         phba->lpfc_hba_down_post = lpfc_hba_down_post_s3;
         phba->lpfc_handle_eratt = lpfc_handle_eratt_s3;
         phba->lpfc_stop_port = lpfc_stop_port_s3;
         break;
     case LPFC_PCI_DEV_OC:
         phba->lpfc_hba_down_post = lpfc_hba_down_post_s4;
         phba->lpfc_handle_eratt = lpfc_handle_eratt_s4;
         phba->lpfc_stop_port = lpfc_stop_port_s4;
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "1431 Invalid HBA PCI-device group: 0x%x\n",
                 dev_grp);
         return -ENODEV;
     }
     return 0;
 }
 
 /**
  * lpfc_setup_driver_resource_phase2 - Phase2 setup driver internal resources.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to set up the driver internal resources after the
  * device specific resource setup to support the HBA device it attached to.
  *
  * Return codes
  *  0 - successful
  *  other values - error
  **/
 static int
 lpfc_setup_driver_resource_phase2(struct lpfc_hba *phba)
 {
     int error;
 
     /* Startup the kernel thread for this host adapter. */
     phba->worker_thread = kthread_run(lpfc_do_work, phba,
                       "lpfc_worker_%d", phba->brd_no);
     if (IS_ERR(phba->worker_thread)) {
         error = PTR_ERR(phba->worker_thread);
         return error;
     }
 
     return 0;
 }
 
 /**
  * lpfc_unset_driver_resource_phase2 - Phase2 unset driver internal resources.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to unset the driver internal resources set up after
  * the device specific resource setup for supporting the HBA device it
  * attached to.
  **/
 static void
 lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)
 {
     if (phba->wq) {
         destroy_workqueue(phba->wq);
         phba->wq = NULL;
     }
 
     /* Stop kernel worker thread */
     if (phba->worker_thread)
         kthread_stop(phba->worker_thread);
 }
 
 /**
  * lpfc_free_iocb_list - Free iocb list.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to free the driver's IOCB list and memory.
  **/
 void
 lpfc_free_iocb_list(struct lpfc_hba *phba)
 {
     struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
 
     spin_lock_irq(&phba->hbalock);
     list_for_each_entry_safe(iocbq_entry, iocbq_next,
                  &phba->lpfc_iocb_list, list) {
         list_del(&iocbq_entry->list);
         kfree(iocbq_entry);
         phba->total_iocbq_bufs--;
     }
     spin_unlock_irq(&phba->hbalock);
 
     return;
 }
 
 /**
  * lpfc_init_iocb_list - Allocate and initialize iocb list.
  * @phba: pointer to lpfc hba data structure.
  * @iocb_count: number of requested iocbs
  *
  * This routine is invoked to allocate and initizlize the driver's IOCB
  * list and set up the IOCB tag array accordingly.
  *
  * Return codes
  *  0 - successful
  *  other values - error
  **/
 int
 lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)
 {
     struct lpfc_iocbq *iocbq_entry = NULL;
     uint16_t iotag;
     int i;
 
     /* Initialize and populate the iocb list per host.  */
     INIT_LIST_HEAD(&phba->lpfc_iocb_list);
     for (i = 0; i < iocb_count; i++) {
         iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
         if (iocbq_entry == NULL) {
             printk(KERN_ERR "%s: only allocated %d iocbs of "
                 "expected %d count. Unloading driver.\n",
                 __func__, i, iocb_count);
             goto out_free_iocbq;
         }
 
         iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
         if (iotag == 0) {
             kfree(iocbq_entry);
             printk(KERN_ERR "%s: failed to allocate IOTAG. "
                 "Unloading driver.\n", __func__);
             goto out_free_iocbq;
         }
         iocbq_entry->sli4_lxritag = NO_XRI;
         iocbq_entry->sli4_xritag = NO_XRI;
 
         spin_lock_irq(&phba->hbalock);
         list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
         phba->total_iocbq_bufs++;
         spin_unlock_irq(&phba->hbalock);
     }
 
     return 0;
 
 out_free_iocbq:
     lpfc_free_iocb_list(phba);
 
     return -ENOMEM;
 }
 
 /**
  * lpfc_free_sgl_list - Free a given sgl list.
  * @phba: pointer to lpfc hba data structure.
  * @sglq_list: pointer to the head of sgl list.
  *
  * This routine is invoked to free a give sgl list and memory.
  **/
 void
 lpfc_free_sgl_list(struct lpfc_hba *phba, struct list_head *sglq_list)
 {
     struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
 
     list_for_each_entry_safe(sglq_entry, sglq_next, sglq_list, list) {
         list_del(&sglq_entry->list);
         lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys);
         kfree(sglq_entry);
     }
 }
 
 /**
  * lpfc_free_els_sgl_list - Free els sgl list.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to free the driver's els sgl list and memory.
  **/
 static void
 lpfc_free_els_sgl_list(struct lpfc_hba *phba)
 {
     LIST_HEAD(sglq_list);
 
     /* Retrieve all els sgls from driver list */
     spin_lock_irq(&phba->sli4_hba.sgl_list_lock);
     list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list, &sglq_list);
     spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
 
     /* Now free the sgl list */
     lpfc_free_sgl_list(phba, &sglq_list);
 }
 
 /**
  * lpfc_free_nvmet_sgl_list - Free nvmet sgl list.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to free the driver's nvmet sgl list and memory.
  **/
 static void
 lpfc_free_nvmet_sgl_list(struct lpfc_hba *phba)
 {
     struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
     LIST_HEAD(sglq_list);
 
     /* Retrieve all nvmet sgls from driver list */
     spin_lock_irq(&phba->hbalock);
     spin_lock(&phba->sli4_hba.sgl_list_lock);
     list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list, &sglq_list);
     spin_unlock(&phba->sli4_hba.sgl_list_lock);
     spin_unlock_irq(&phba->hbalock);
 
     /* Now free the sgl list */
     list_for_each_entry_safe(sglq_entry, sglq_next, &sglq_list, list) {
         list_del(&sglq_entry->list);
         lpfc_nvmet_buf_free(phba, sglq_entry->virt, sglq_entry->phys);
         kfree(sglq_entry);
     }
 
     /* Update the nvmet_xri_cnt to reflect no current sgls.
      * The next initialization cycle sets the count and allocates
      * the sgls over again.
      */
     phba->sli4_hba.nvmet_xri_cnt = 0;
 }
 
 /**
  * lpfc_init_active_sgl_array - Allocate the buf to track active ELS XRIs.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to allocate the driver's active sgl memory.
  * This array will hold the sglq_entry's for active IOs.
  **/
 static int
 lpfc_init_active_sgl_array(struct lpfc_hba *phba)
 {
     int size;
     size = sizeof(struct lpfc_sglq *);
     size *= phba->sli4_hba.max_cfg_param.max_xri;
 
     phba->sli4_hba.lpfc_sglq_active_list =
         kzalloc(size, GFP_KERNEL);
     if (!phba->sli4_hba.lpfc_sglq_active_list)
         return -ENOMEM;
     return 0;
 }
 
 /**
  * lpfc_free_active_sgl - Free the buf that tracks active ELS XRIs.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to walk through the array of active sglq entries
  * and free all of the resources.
  * This is just a place holder for now.
  **/
 static void
 lpfc_free_active_sgl(struct lpfc_hba *phba)
 {
     kfree(phba->sli4_hba.lpfc_sglq_active_list);
 }
 
 /**
  * lpfc_init_sgl_list - Allocate and initialize sgl list.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to allocate and initizlize the driver's sgl
  * list and set up the sgl xritag tag array accordingly.
  *
  **/
 static void
 lpfc_init_sgl_list(struct lpfc_hba *phba)
 {
     /* Initialize and populate the sglq list per host/VF. */
     INIT_LIST_HEAD(&phba->sli4_hba.lpfc_els_sgl_list);
     INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list);
     INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_sgl_list);
     INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
 
     /* els xri-sgl book keeping */
     phba->sli4_hba.els_xri_cnt = 0;
 
     /* nvme xri-buffer book keeping */
     phba->sli4_hba.io_xri_cnt = 0;
 }
 
 /**
  * lpfc_sli4_init_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
  * port for those SLI4 ports that do not support extents.  This routine
  * posts a PAGE_SIZE memory region to the port to hold up to
  * PAGE_SIZE modulo 64 rpi context headers.  This is an initialization routine
  * and should be called only when interrupts are disabled.
  *
  * Return codes
  *  0 - successful
  *  -ERROR - otherwise.
  **/
 int
 lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba)
 {
     int rc = 0;
     struct lpfc_rpi_hdr *rpi_hdr;
 
     INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list);
     if (!phba->sli4_hba.rpi_hdrs_in_use)
         return rc;
     if (phba->sli4_hba.extents_in_use)
         return -EIO;
 
     rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
     if (!rpi_hdr) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0391 Error during rpi post operation\n");
         lpfc_sli4_remove_rpis(phba);
         rc = -ENODEV;
     }
 
     return rc;
 }
 
 /**
  * lpfc_sli4_create_rpi_hdr - Allocate an rpi header memory region
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to allocate a single 4KB memory region to
  * support rpis and stores them in the phba.  This single region
  * provides support for up to 64 rpis.  The region is used globally
  * by the device.
  *
  * Returns:
  *   A valid rpi hdr on success.
  *   A NULL pointer on any failure.
  **/
 struct lpfc_rpi_hdr *
 lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
 {
     uint16_t rpi_limit, curr_rpi_range;
     struct lpfc_dmabuf *dmabuf;
     struct lpfc_rpi_hdr *rpi_hdr;
 
     /*
      * If the SLI4 port supports extents, posting the rpi header isn't
      * required.  Set the expected maximum count and let the actual value
      * get set when extents are fully allocated.
      */
     if (!phba->sli4_hba.rpi_hdrs_in_use)
         return NULL;
     if (phba->sli4_hba.extents_in_use)
         return NULL;
 
     /* The limit on the logical index is just the max_rpi count. */
     rpi_limit = phba->sli4_hba.max_cfg_param.max_rpi;
 
     spin_lock_irq(&phba->hbalock);
     /*
      * Establish the starting RPI in this header block.  The starting
      * rpi is normalized to a zero base because the physical rpi is
      * port based.
      */
     curr_rpi_range = phba->sli4_hba.next_rpi;
     spin_unlock_irq(&phba->hbalock);
 
     /* Reached full RPI range */
     if (curr_rpi_range == rpi_limit)
         return NULL;
 
     /*
      * First allocate the protocol header region for the port.  The
      * port expects a 4KB DMA-mapped memory region that is 4K aligned.
      */
     dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
     if (!dmabuf)
         return NULL;
 
     dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
                       LPFC_HDR_TEMPLATE_SIZE,
                       &dmabuf->phys, GFP_KERNEL);
     if (!dmabuf->virt) {
         rpi_hdr = NULL;
         goto err_free_dmabuf;
     }
 
     if (!IS_ALIGNED(dmabuf->phys, LPFC_HDR_TEMPLATE_SIZE)) {
         rpi_hdr = NULL;
         goto err_free_coherent;
     }
 
     /* Save the rpi header data for cleanup later. */
     rpi_hdr = kzalloc(sizeof(struct lpfc_rpi_hdr), GFP_KERNEL);
     if (!rpi_hdr)
         goto err_free_coherent;
 
     rpi_hdr->dmabuf = dmabuf;
     rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE;
     rpi_hdr->page_count = 1;
     spin_lock_irq(&phba->hbalock);
 
     /* The rpi_hdr stores the logical index only. */
     rpi_hdr->start_rpi = curr_rpi_range;
     rpi_hdr->next_rpi = phba->sli4_hba.next_rpi + LPFC_RPI_HDR_COUNT;
     list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list);
 
     spin_unlock_irq(&phba->hbalock);
     return rpi_hdr;
 
  err_free_coherent:
     dma_free_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE,
               dmabuf->virt, dmabuf->phys);
  err_free_dmabuf:
     kfree(dmabuf);
     return NULL;
 }
 
 /**
  * lpfc_sli4_remove_rpi_hdrs - Remove all rpi header memory regions
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to remove all memory resources allocated
  * to support rpis for SLI4 ports not supporting extents. This routine
  * presumes the caller has released all rpis consumed by fabric or port
  * logins and is prepared to have the header pages removed.
  **/
 void
 lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)
 {
     struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr;
 
     if (!phba->sli4_hba.rpi_hdrs_in_use)
         goto exit;
 
     list_for_each_entry_safe(rpi_hdr, next_rpi_hdr,
                  &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
         list_del(&rpi_hdr->list);
         dma_free_coherent(&phba->pcidev->dev, rpi_hdr->len,
                   rpi_hdr->dmabuf->virt, rpi_hdr->dmabuf->phys);
         kfree(rpi_hdr->dmabuf);
         kfree(rpi_hdr);
     }
  exit:
     /* There are no rpis available to the port now. */
     phba->sli4_hba.next_rpi = 0;
 }
 
 /**
  * lpfc_hba_alloc - Allocate driver hba data structure for a device.
  * @pdev: pointer to pci device data structure.
  *
  * This routine is invoked to allocate the driver hba data structure for an
  * HBA device. If the allocation is successful, the phba reference to the
  * PCI device data structure is set.
  *
  * Return codes
  *      pointer to @phba - successful
  *      NULL - error
  **/
 static struct lpfc_hba *
 lpfc_hba_alloc(struct pci_dev *pdev)
 {
     struct lpfc_hba *phba;
 
     /* Allocate memory for HBA structure */
     phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL);
     if (!phba) {
         dev_err(&pdev->dev, "failed to allocate hba struct\n");
         return NULL;
     }
 
     /* Set reference to PCI device in HBA structure */
     phba->pcidev = pdev;
 
     /* Assign an unused board number */
     phba->brd_no = lpfc_get_instance();
     if (phba->brd_no < 0) {
         kfree(phba);
         return NULL;
     }
     phba->eratt_poll_interval = LPFC_ERATT_POLL_INTERVAL;
 
     spin_lock_init(&phba->ct_ev_lock);
     INIT_LIST_HEAD(&phba->ct_ev_waiters);
 
     return phba;
 }
 
 /**
  * lpfc_hba_free - Free driver hba data structure with a device.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to free the driver hba data structure with an
  * HBA device.
  **/
 static void
 lpfc_hba_free(struct lpfc_hba *phba)
 {
     if (phba->sli_rev == LPFC_SLI_REV4)
         kfree(phba->sli4_hba.hdwq);
 
     /* Release the driver assigned board number */
     idr_remove(&lpfc_hba_index, phba->brd_no);
 
     /* Free memory allocated with sli3 rings */
     kfree(phba->sli.sli3_ring);
     phba->sli.sli3_ring = NULL;
 
     kfree(phba);
     return;
 }
 
 /**
  * lpfc_setup_fdmi_mask - Setup initial FDMI mask for HBA and Port attributes
  * @vport: pointer to lpfc vport data structure.
  *
  * This routine is will setup initial FDMI attribute masks for
  * FDMI2 or SmartSAN depending on module parameters. The driver will attempt
  * to get these attributes first before falling back, the attribute
  * fallback hierarchy is SmartSAN -> FDMI2 -> FMDI1
  **/
 void
 lpfc_setup_fdmi_mask(struct lpfc_vport *vport)
 {
     struct lpfc_hba *phba = vport->phba;
 
     vport->load_flag |= FC_ALLOW_FDMI;
     if (phba->cfg_enable_SmartSAN ||
         phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT) {
         /* Setup appropriate attribute masks */
         vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR;
         if (phba->cfg_enable_SmartSAN)
             vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR;
         else
             vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR;
     }
 
     lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
             "6077 Setup FDMI mask: hba x%x port x%x\n",
             vport->fdmi_hba_mask, vport->fdmi_port_mask);
 }
 
 /**
  * lpfc_create_shost - Create hba physical port with associated scsi host.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to create HBA physical port and associate a SCSI
  * host with it.
  *
  * Return codes
  *      0 - successful
  *      other values - error
  **/
 static int
 lpfc_create_shost(struct lpfc_hba *phba)
 {
     struct lpfc_vport *vport;
     struct Scsi_Host  *shost;
 
     /* Initialize HBA FC structure */
     phba->fc_edtov = FF_DEF_EDTOV;
     phba->fc_ratov = FF_DEF_RATOV;
     phba->fc_altov = FF_DEF_ALTOV;
     phba->fc_arbtov = FF_DEF_ARBTOV;
 
     atomic_set(&phba->sdev_cnt, 0);
     vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
     if (!vport)
         return -ENODEV;
 
     shost = lpfc_shost_from_vport(vport);
     phba->pport = vport;
 
     if (phba->nvmet_support) {
         /* Only 1 vport (pport) will support NVME target */
         phba->targetport = NULL;
         phba->cfg_enable_fc4_type = LPFC_ENABLE_NVME;
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME_DISC,
                 "6076 NVME Target Found\n");
     }
 
     lpfc_debugfs_initialize(vport);
     /* Put reference to SCSI host to driver's device private data */
     pci_set_drvdata(phba->pcidev, shost);
 
     lpfc_setup_fdmi_mask(vport);
 
     /*
      * At this point we are fully registered with PSA. In addition,
      * any initial discovery should be completed.
      */
     return 0;
 }
 
 /**
  * lpfc_destroy_shost - Destroy hba physical port with associated scsi host.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to destroy HBA physical port and the associated
  * SCSI host.
  **/
 static void
 lpfc_destroy_shost(struct lpfc_hba *phba)
 {
     struct lpfc_vport *vport = phba->pport;
 
     /* Destroy physical port that associated with the SCSI host */
     destroy_port(vport);
 
     return;
 }
 
 /**
  * lpfc_setup_bg - Setup Block guard structures and debug areas.
  * @phba: pointer to lpfc hba data structure.
  * @shost: the shost to be used to detect Block guard settings.
  *
  * This routine sets up the local Block guard protocol settings for @shost.
  * This routine also allocates memory for debugging bg buffers.
  **/
 static void
 lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)
 {
     uint32_t old_mask;
     uint32_t old_guard;
 
     if (phba->cfg_prot_mask && phba->cfg_prot_guard) {
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "1478 Registering BlockGuard with the "
                 "SCSI layer\n");
 
         old_mask = phba->cfg_prot_mask;
         old_guard = phba->cfg_prot_guard;
 
         /* Only allow supported values */
         phba->cfg_prot_mask &= (SHOST_DIF_TYPE1_PROTECTION |
             SHOST_DIX_TYPE0_PROTECTION |
             SHOST_DIX_TYPE1_PROTECTION);
         phba->cfg_prot_guard &= (SHOST_DIX_GUARD_IP |
                      SHOST_DIX_GUARD_CRC);
 
         /* DIF Type 1 protection for profiles AST1/C1 is end to end */
         if (phba->cfg_prot_mask == SHOST_DIX_TYPE1_PROTECTION)
             phba->cfg_prot_mask |= SHOST_DIF_TYPE1_PROTECTION;
 
         if (phba->cfg_prot_mask && phba->cfg_prot_guard) {
             if ((old_mask != phba->cfg_prot_mask) ||
                 (old_guard != phba->cfg_prot_guard))
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "1475 Registering BlockGuard with the "
                     "SCSI layer: mask %d  guard %d\n",
                     phba->cfg_prot_mask,
                     phba->cfg_prot_guard);
 
             scsi_host_set_prot(shost, phba->cfg_prot_mask);
             scsi_host_set_guard(shost, phba->cfg_prot_guard);
         } else
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "1479 Not Registering BlockGuard with the SCSI "
                 "layer, Bad protection parameters: %d %d\n",
                 old_mask, old_guard);
     }
 }
 
 /**
  * lpfc_post_init_setup - Perform necessary device post initialization setup.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to perform all the necessary post initialization
  * setup for the device.
  **/
 static void
 lpfc_post_init_setup(struct lpfc_hba *phba)
 {
     struct Scsi_Host  *shost;
     struct lpfc_adapter_event_header adapter_event;
 
     /* Get the default values for Model Name and Description */
     lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
 
     /*
      * hba setup may have changed the hba_queue_depth so we need to
      * adjust the value of can_queue.
      */
     shost = pci_get_drvdata(phba->pcidev);
     shost->can_queue = phba->cfg_hba_queue_depth - 10;
 
     lpfc_host_attrib_init(shost);
 
     if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
         spin_lock_irq(shost->host_lock);
         lpfc_poll_start_timer(phba);
         spin_unlock_irq(shost->host_lock);
     }
 
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "0428 Perform SCSI scan\n");
     /* Send board arrival event to upper layer */
     adapter_event.event_type = FC_REG_ADAPTER_EVENT;
     adapter_event.subcategory = LPFC_EVENT_ARRIVAL;
     fc_host_post_vendor_event(shost, fc_get_event_number(),
                   sizeof(adapter_event),
                   (char *) &adapter_event,
                   LPFC_NL_VENDOR_ID);
     return;
 }
 
 /**
  * lpfc_sli_pci_mem_setup - Setup SLI3 HBA PCI memory space.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to set up the PCI device memory space for device
  * with SLI-3 interface spec.
  *
  * Return codes
  *  0 - successful
  *  other values - error
  **/
 static int
 lpfc_sli_pci_mem_setup(struct lpfc_hba *phba)
 {
     struct pci_dev *pdev = phba->pcidev;
     unsigned long bar0map_len, bar2map_len;
     int i, hbq_count;
     void *ptr;
     int error;
 
     if (!pdev)
         return -ENODEV;
 
     /* Set the device DMA mask size */
     error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
     if (error)
         error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
     if (error)
         return error;
     error = -ENODEV;
 
     /* Get the bus address of Bar0 and Bar2 and the number of bytes
      * required by each mapping.
      */
     phba->pci_bar0_map = pci_resource_start(pdev, 0);
     bar0map_len = pci_resource_len(pdev, 0);
 
     phba->pci_bar2_map = pci_resource_start(pdev, 2);
     bar2map_len = pci_resource_len(pdev, 2);
 
     /* Map HBA SLIM to a kernel virtual address. */
     phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len);
     if (!phba->slim_memmap_p) {
         dev_printk(KERN_ERR, &pdev->dev,
                "ioremap failed for SLIM memory.\n");
         goto out;
     }
 
     /* Map HBA Control Registers to a kernel virtual address. */
     phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
     if (!phba->ctrl_regs_memmap_p) {
         dev_printk(KERN_ERR, &pdev->dev,
                "ioremap failed for HBA control registers.\n");
         goto out_iounmap_slim;
     }
 
     /* Allocate memory for SLI-2 structures */
     phba->slim2p.virt = dma_alloc_coherent(&pdev->dev, SLI2_SLIM_SIZE,
                            &phba->slim2p.phys, GFP_KERNEL);
     if (!phba->slim2p.virt)
         goto out_iounmap;
 
     phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);
     phba->mbox_ext = (phba->slim2p.virt +
         offsetof(struct lpfc_sli2_slim, mbx_ext_words));
     phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb));
     phba->IOCBs = (phba->slim2p.virt +
                offsetof(struct lpfc_sli2_slim, IOCBs));
 
     phba->hbqslimp.virt = dma_alloc_coherent(&pdev->dev,
                          lpfc_sli_hbq_size(),
                          &phba->hbqslimp.phys,
                          GFP_KERNEL);
     if (!phba->hbqslimp.virt)
         goto out_free_slim;
 
     hbq_count = lpfc_sli_hbq_count();
     ptr = phba->hbqslimp.virt;
     for (i = 0; i < hbq_count; ++i) {
         phba->hbqs[i].hbq_virt = ptr;
         INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
         ptr += (lpfc_hbq_defs[i]->entry_count *
             sizeof(struct lpfc_hbq_entry));
     }
     phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc;
     phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free;
 
     memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size());
 
     phba->MBslimaddr = phba->slim_memmap_p;
     phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;
     phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;
     phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
     phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;
 
     return 0;
 
 out_free_slim:
     dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
               phba->slim2p.virt, phba->slim2p.phys);
 out_iounmap:
     iounmap(phba->ctrl_regs_memmap_p);
 out_iounmap_slim:
     iounmap(phba->slim_memmap_p);
 out:
     return error;
 }
 
 /**
  * lpfc_sli_pci_mem_unset - Unset SLI3 HBA PCI memory space.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to unset the PCI device memory space for device
  * with SLI-3 interface spec.
  **/
 static void
 lpfc_sli_pci_mem_unset(struct lpfc_hba *phba)
 {
     struct pci_dev *pdev;
 
     /* Obtain PCI device reference */
     if (!phba->pcidev)
         return;
     else
         pdev = phba->pcidev;
 
     /* Free coherent DMA memory allocated */
     dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
               phba->hbqslimp.virt, phba->hbqslimp.phys);
     dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
               phba->slim2p.virt, phba->slim2p.phys);
 
     /* I/O memory unmap */
     iounmap(phba->ctrl_regs_memmap_p);
     iounmap(phba->slim_memmap_p);
 
     return;
 }
 
 /**
  * lpfc_sli4_post_status_check - Wait for SLI4 POST done and check status
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to wait for SLI4 device Power On Self Test (POST)
  * done and check status.
  *
  * Return 0 if successful, otherwise -ENODEV.
  **/
 int
 lpfc_sli4_post_status_check(struct lpfc_hba *phba)
 {
     struct lpfc_register portsmphr_reg, uerrlo_reg, uerrhi_reg;
     struct lpfc_register reg_data;
     int i, port_error = 0;
     uint32_t if_type;
 
     memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
     memset(&reg_data, 0, sizeof(reg_data));
     if (!phba->sli4_hba.PSMPHRregaddr)
         return -ENODEV;
 
     /* Wait up to 30 seconds for the SLI Port POST done and ready */
     for (i = 0; i < 3000; i++) {
         if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
             &portsmphr_reg.word0) ||
             (bf_get(lpfc_port_smphr_perr, &portsmphr_reg))) {
             /* Port has a fatal POST error, break out */
             port_error = -ENODEV;
             break;
         }
         if (LPFC_POST_STAGE_PORT_READY ==
             bf_get(lpfc_port_smphr_port_status, &portsmphr_reg))
             break;
         msleep(10);
     }
 
     /*
      * If there was a port error during POST, then don't proceed with
      * other register reads as the data may not be valid.  Just exit.
      */
     if (port_error) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "1408 Port Failed POST - portsmphr=0x%x, "
             "perr=x%x, sfi=x%x, nip=x%x, ipc=x%x, scr1=x%x, "
             "scr2=x%x, hscratch=x%x, pstatus=x%x\n",
             portsmphr_reg.word0,
             bf_get(lpfc_port_smphr_perr, &portsmphr_reg),
             bf_get(lpfc_port_smphr_sfi, &portsmphr_reg),
             bf_get(lpfc_port_smphr_nip, &portsmphr_reg),
             bf_get(lpfc_port_smphr_ipc, &portsmphr_reg),
             bf_get(lpfc_port_smphr_scr1, &portsmphr_reg),
             bf_get(lpfc_port_smphr_scr2, &portsmphr_reg),
             bf_get(lpfc_port_smphr_host_scratch, &portsmphr_reg),
             bf_get(lpfc_port_smphr_port_status, &portsmphr_reg));
     } else {
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "2534 Device Info: SLIFamily=0x%x, "
                 "SLIRev=0x%x, IFType=0x%x, SLIHint_1=0x%x, "
                 "SLIHint_2=0x%x, FT=0x%x\n",
                 bf_get(lpfc_sli_intf_sli_family,
                        &phba->sli4_hba.sli_intf),
                 bf_get(lpfc_sli_intf_slirev,
                        &phba->sli4_hba.sli_intf),
                 bf_get(lpfc_sli_intf_if_type,
                        &phba->sli4_hba.sli_intf),
                 bf_get(lpfc_sli_intf_sli_hint1,
                        &phba->sli4_hba.sli_intf),
                 bf_get(lpfc_sli_intf_sli_hint2,
                        &phba->sli4_hba.sli_intf),
                 bf_get(lpfc_sli_intf_func_type,
                        &phba->sli4_hba.sli_intf));
         /*
          * Check for other Port errors during the initialization
          * process.  Fail the load if the port did not come up
          * correctly.
          */
         if_type = bf_get(lpfc_sli_intf_if_type,
                  &phba->sli4_hba.sli_intf);
         switch (if_type) {
         case LPFC_SLI_INTF_IF_TYPE_0:
             phba->sli4_hba.ue_mask_lo =
                   readl(phba->sli4_hba.u.if_type0.UEMASKLOregaddr);
             phba->sli4_hba.ue_mask_hi =
                   readl(phba->sli4_hba.u.if_type0.UEMASKHIregaddr);
             uerrlo_reg.word0 =
                   readl(phba->sli4_hba.u.if_type0.UERRLOregaddr);
             uerrhi_reg.word0 =
                 readl(phba->sli4_hba.u.if_type0.UERRHIregaddr);
             if ((~phba->sli4_hba.ue_mask_lo & uerrlo_reg.word0) ||
                 (~phba->sli4_hba.ue_mask_hi & uerrhi_reg.word0)) {
                 lpfc_printf_log(phba, KERN_ERR,
                         LOG_TRACE_EVENT,
                         "1422 Unrecoverable Error "
                         "Detected during POST "
                         "uerr_lo_reg=0x%x, "
                         "uerr_hi_reg=0x%x, "
                         "ue_mask_lo_reg=0x%x, "
                         "ue_mask_hi_reg=0x%x\n",
                         uerrlo_reg.word0,
                         uerrhi_reg.word0,
                         phba->sli4_hba.ue_mask_lo,
                         phba->sli4_hba.ue_mask_hi);
                 port_error = -ENODEV;
             }
             break;
         case LPFC_SLI_INTF_IF_TYPE_2:
         case LPFC_SLI_INTF_IF_TYPE_6:
             /* Final checks.  The port status should be clean. */
             if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
                 &reg_data.word0) ||
                 (bf_get(lpfc_sliport_status_err, &reg_data) &&
                  !bf_get(lpfc_sliport_status_rn, &reg_data))) {
                 phba->work_status[0] =
                     readl(phba->sli4_hba.u.if_type2.
                           ERR1regaddr);
                 phba->work_status[1] =
                     readl(phba->sli4_hba.u.if_type2.
                           ERR2regaddr);
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2888 Unrecoverable port error "
                     "following POST: port status reg "
                     "0x%x, port_smphr reg 0x%x, "
                     "error 1=0x%x, error 2=0x%x\n",
                     reg_data.word0,
                     portsmphr_reg.word0,
                     phba->work_status[0],
                     phba->work_status[1]);
                 port_error = -ENODEV;
                 break;
             }
 
             if (lpfc_pldv_detect &&
                 bf_get(lpfc_sli_intf_sli_family,
                    &phba->sli4_hba.sli_intf) ==
                     LPFC_SLI_INTF_FAMILY_G6)
                 pci_write_config_byte(phba->pcidev,
                               LPFC_SLI_INTF, CFG_PLD);
             break;
         case LPFC_SLI_INTF_IF_TYPE_1:
         default:
             break;
         }
     }
     return port_error;
 }
 
 /**
  * lpfc_sli4_bar0_register_memmap - Set up SLI4 BAR0 register memory map.
  * @phba: pointer to lpfc hba data structure.
  * @if_type:  The SLI4 interface type getting configured.
  *
  * This routine is invoked to set up SLI4 BAR0 PCI config space register
  * memory map.
  **/
 static void
 lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
 {
     switch (if_type) {
     case LPFC_SLI_INTF_IF_TYPE_0:
         phba->sli4_hba.u.if_type0.UERRLOregaddr =
             phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_LO;
         phba->sli4_hba.u.if_type0.UERRHIregaddr =
             phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_HI;
         phba->sli4_hba.u.if_type0.UEMASKLOregaddr =
             phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_LO;
         phba->sli4_hba.u.if_type0.UEMASKHIregaddr =
             phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_HI;
         phba->sli4_hba.SLIINTFregaddr =
             phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
         break;
     case LPFC_SLI_INTF_IF_TYPE_2:
         phba->sli4_hba.u.if_type2.EQDregaddr =
             phba->sli4_hba.conf_regs_memmap_p +
                         LPFC_CTL_PORT_EQ_DELAY_OFFSET;
         phba->sli4_hba.u.if_type2.ERR1regaddr =
             phba->sli4_hba.conf_regs_memmap_p +
                         LPFC_CTL_PORT_ER1_OFFSET;
         phba->sli4_hba.u.if_type2.ERR2regaddr =
             phba->sli4_hba.conf_regs_memmap_p +
                         LPFC_CTL_PORT_ER2_OFFSET;
         phba->sli4_hba.u.if_type2.CTRLregaddr =
             phba->sli4_hba.conf_regs_memmap_p +
                         LPFC_CTL_PORT_CTL_OFFSET;
         phba->sli4_hba.u.if_type2.STATUSregaddr =
             phba->sli4_hba.conf_regs_memmap_p +
                         LPFC_CTL_PORT_STA_OFFSET;
         phba->sli4_hba.SLIINTFregaddr =
             phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
         phba->sli4_hba.PSMPHRregaddr =
             phba->sli4_hba.conf_regs_memmap_p +
                         LPFC_CTL_PORT_SEM_OFFSET;
         phba->sli4_hba.RQDBregaddr =
             phba->sli4_hba.conf_regs_memmap_p +
                         LPFC_ULP0_RQ_DOORBELL;
         phba->sli4_hba.WQDBregaddr =
             phba->sli4_hba.conf_regs_memmap_p +
                         LPFC_ULP0_WQ_DOORBELL;
         phba->sli4_hba.CQDBregaddr =
             phba->sli4_hba.conf_regs_memmap_p + LPFC_EQCQ_DOORBELL;
         phba->sli4_hba.EQDBregaddr = phba->sli4_hba.CQDBregaddr;
         phba->sli4_hba.MQDBregaddr =
             phba->sli4_hba.conf_regs_memmap_p + LPFC_MQ_DOORBELL;
         phba->sli4_hba.BMBXregaddr =
             phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
         break;
     case LPFC_SLI_INTF_IF_TYPE_6:
         phba->sli4_hba.u.if_type2.EQDregaddr =
             phba->sli4_hba.conf_regs_memmap_p +
                         LPFC_CTL_PORT_EQ_DELAY_OFFSET;
         phba->sli4_hba.u.if_type2.ERR1regaddr =
             phba->sli4_hba.conf_regs_memmap_p +
                         LPFC_CTL_PORT_ER1_OFFSET;
         phba->sli4_hba.u.if_type2.ERR2regaddr =
             phba->sli4_hba.conf_regs_memmap_p +
                         LPFC_CTL_PORT_ER2_OFFSET;
         phba->sli4_hba.u.if_type2.CTRLregaddr =
             phba->sli4_hba.conf_regs_memmap_p +
                         LPFC_CTL_PORT_CTL_OFFSET;
         phba->sli4_hba.u.if_type2.STATUSregaddr =
             phba->sli4_hba.conf_regs_memmap_p +
                         LPFC_CTL_PORT_STA_OFFSET;
         phba->sli4_hba.PSMPHRregaddr =
             phba->sli4_hba.conf_regs_memmap_p +
                         LPFC_CTL_PORT_SEM_OFFSET;
         phba->sli4_hba.BMBXregaddr =
             phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
         break;
     case LPFC_SLI_INTF_IF_TYPE_1:
     default:
         dev_printk(KERN_ERR, &phba->pcidev->dev,
                "FATAL - unsupported SLI4 interface type - %d\n",
                if_type);
         break;
     }
 }
 
 /**
  * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map.
  * @phba: pointer to lpfc hba data structure.
  * @if_type: sli if type to operate on.
  *
  * This routine is invoked to set up SLI4 BAR1 register memory map.
  **/
 static void
 lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
 {
     switch (if_type) {
     case LPFC_SLI_INTF_IF_TYPE_0:
         phba->sli4_hba.PSMPHRregaddr =
             phba->sli4_hba.ctrl_regs_memmap_p +
             LPFC_SLIPORT_IF0_SMPHR;
         phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
             LPFC_HST_ISR0;
         phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
             LPFC_HST_IMR0;
         phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
             LPFC_HST_ISCR0;
         break;
     case LPFC_SLI_INTF_IF_TYPE_6:
         phba->sli4_hba.RQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
             LPFC_IF6_RQ_DOORBELL;
         phba->sli4_hba.WQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
             LPFC_IF6_WQ_DOORBELL;
         phba->sli4_hba.CQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
             LPFC_IF6_CQ_DOORBELL;
         phba->sli4_hba.EQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
             LPFC_IF6_EQ_DOORBELL;
         phba->sli4_hba.MQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
             LPFC_IF6_MQ_DOORBELL;
         break;
     case LPFC_SLI_INTF_IF_TYPE_2:
     case LPFC_SLI_INTF_IF_TYPE_1:
     default:
         dev_err(&phba->pcidev->dev,
                "FATAL - unsupported SLI4 interface type - %d\n",
                if_type);
         break;
     }
 }
 
 /**
  * lpfc_sli4_bar2_register_memmap - Set up SLI4 BAR2 register memory map.
  * @phba: pointer to lpfc hba data structure.
  * @vf: virtual function number
  *
  * This routine is invoked to set up SLI4 BAR2 doorbell register memory map
  * based on the given viftual function number, @vf.
  *
  * Return 0 if successful, otherwise -ENODEV.
  **/
 static int
 lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf)
 {
     if (vf > LPFC_VIR_FUNC_MAX)
         return -ENODEV;
 
     phba->sli4_hba.RQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
                 vf * LPFC_VFR_PAGE_SIZE +
                     LPFC_ULP0_RQ_DOORBELL);
     phba->sli4_hba.WQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
                 vf * LPFC_VFR_PAGE_SIZE +
                     LPFC_ULP0_WQ_DOORBELL);
     phba->sli4_hba.CQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
                 vf * LPFC_VFR_PAGE_SIZE +
                     LPFC_EQCQ_DOORBELL);
     phba->sli4_hba.EQDBregaddr = phba->sli4_hba.CQDBregaddr;
     phba->sli4_hba.MQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
                 vf * LPFC_VFR_PAGE_SIZE + LPFC_MQ_DOORBELL);
     phba->sli4_hba.BMBXregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
                 vf * LPFC_VFR_PAGE_SIZE + LPFC_BMBX);
     return 0;
 }
 
 /**
  * lpfc_create_bootstrap_mbox - Create the bootstrap mailbox
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to create the bootstrap mailbox
  * region consistent with the SLI-4 interface spec.  This
  * routine allocates all memory necessary to communicate
  * mailbox commands to the port and sets up all alignment
  * needs.  No locks are expected to be held when calling
  * this routine.
  *
  * Return codes
  *  0 - successful
  *  -ENOMEM - could not allocated memory.
  **/
 static int
 lpfc_create_bootstrap_mbox(struct lpfc_hba *phba)
 {
     uint32_t bmbx_size;
     struct lpfc_dmabuf *dmabuf;
     struct dma_address *dma_address;
     uint32_t pa_addr;
     uint64_t phys_addr;
 
     dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
     if (!dmabuf)
         return -ENOMEM;
 
     /*
      * The bootstrap mailbox region is comprised of 2 parts
      * plus an alignment restriction of 16 bytes.
      */
     bmbx_size = sizeof(struct lpfc_bmbx_create) + (LPFC_ALIGN_16_BYTE - 1);
     dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, bmbx_size,
                       &dmabuf->phys, GFP_KERNEL);
     if (!dmabuf->virt) {
         kfree(dmabuf);
         return -ENOMEM;
     }
 
     /*
      * Initialize the bootstrap mailbox pointers now so that the register
      * operations are simple later.  The mailbox dma address is required
      * to be 16-byte aligned.  Also align the virtual memory as each
      * maibox is copied into the bmbx mailbox region before issuing the
      * command to the port.
      */
     phba->sli4_hba.bmbx.dmabuf = dmabuf;
     phba->sli4_hba.bmbx.bmbx_size = bmbx_size;
 
     phba->sli4_hba.bmbx.avirt = PTR_ALIGN(dmabuf->virt,
                           LPFC_ALIGN_16_BYTE);
     phba->sli4_hba.bmbx.aphys = ALIGN(dmabuf->phys,
                           LPFC_ALIGN_16_BYTE);
 
     /*
      * Set the high and low physical addresses now.  The SLI4 alignment
      * requirement is 16 bytes and the mailbox is posted to the port
      * as two 30-bit addresses.  The other data is a bit marking whether
      * the 30-bit address is the high or low address.
      * Upcast bmbx aphys to 64bits so shift instruction compiles
      * clean on 32 bit machines.
      */
     dma_address = &phba->sli4_hba.bmbx.dma_address;
     phys_addr = (uint64_t)phba->sli4_hba.bmbx.aphys;
     pa_addr = (uint32_t) ((phys_addr >> 34) & 0x3fffffff);
     dma_address->addr_hi = (uint32_t) ((pa_addr << 2) |
                        LPFC_BMBX_BIT1_ADDR_HI);
 
     pa_addr = (uint32_t) ((phba->sli4_hba.bmbx.aphys >> 4) & 0x3fffffff);
     dma_address->addr_lo = (uint32_t) ((pa_addr << 2) |
                        LPFC_BMBX_BIT1_ADDR_LO);
     return 0;
 }
 
 /**
  * lpfc_destroy_bootstrap_mbox - Destroy all bootstrap mailbox resources
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to teardown the bootstrap mailbox
  * region and release all host resources. This routine requires
  * the caller to ensure all mailbox commands recovered, no
  * additional mailbox comands are sent, and interrupts are disabled
  * before calling this routine.
  *
  **/
 static void
 lpfc_destroy_bootstrap_mbox(struct lpfc_hba *phba)
 {
     dma_free_coherent(&phba->pcidev->dev,
               phba->sli4_hba.bmbx.bmbx_size,
               phba->sli4_hba.bmbx.dmabuf->virt,
               phba->sli4_hba.bmbx.dmabuf->phys);
 
     kfree(phba->sli4_hba.bmbx.dmabuf);
     memset(&phba->sli4_hba.bmbx, 0, sizeof(struct lpfc_bmbx));
 }
 
 static const char * const lpfc_topo_to_str[] = {
     "Loop then P2P",
     "Loopback",
     "P2P Only",
     "Unsupported",
     "Loop Only",
     "Unsupported",
     "P2P then Loop",
 };
 
 #define LINK_FLAGS_DEF  0x0
 #define LINK_FLAGS_P2P  0x1
 #define LINK_FLAGS_LOOP 0x2
 /**
  * lpfc_map_topology - Map the topology read from READ_CONFIG
  * @phba: pointer to lpfc hba data structure.
  * @rd_config: pointer to read config data
  *
  * This routine is invoked to map the topology values as read
  * from the read config mailbox command. If the persistent
  * topology feature is supported, the firmware will provide the
  * saved topology information to be used in INIT_LINK
  **/
 static void
 lpfc_map_topology(struct lpfc_hba *phba, struct lpfc_mbx_read_config *rd_config)
 {
     u8 ptv, tf, pt;
 
     ptv = bf_get(lpfc_mbx_rd_conf_ptv, rd_config);
     tf = bf_get(lpfc_mbx_rd_conf_tf, rd_config);
     pt = bf_get(lpfc_mbx_rd_conf_pt, rd_config);
 
     lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
             "2027 Read Config Data : ptv:0x%x, tf:0x%x pt:0x%x",
              ptv, tf, pt);
     if (!ptv) {
         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
                 "2019 FW does not support persistent topology "
                 "Using driver parameter defined value [%s]",
                 lpfc_topo_to_str[phba->cfg_topology]);
         return;
     }
     /* FW supports persistent topology - override module parameter value */
     phba->hba_flag |= HBA_PERSISTENT_TOPO;
 
     /* if ASIC_GEN_NUM >= 0xC) */
     if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
             LPFC_SLI_INTF_IF_TYPE_6) ||
         (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==
             LPFC_SLI_INTF_FAMILY_G6)) {
         if (!tf) {
             phba->cfg_topology = ((pt == LINK_FLAGS_LOOP)
                     ? FLAGS_TOPOLOGY_MODE_LOOP
                     : FLAGS_TOPOLOGY_MODE_PT_PT);
         } else {
             phba->hba_flag &= ~HBA_PERSISTENT_TOPO;
         }
     } else { /* G5 */
         if (tf) {
             /* If topology failover set - pt is '0' or '1' */
             phba->cfg_topology = (pt ? FLAGS_TOPOLOGY_MODE_PT_LOOP :
                           FLAGS_TOPOLOGY_MODE_LOOP_PT);
         } else {
             phba->cfg_topology = ((pt == LINK_FLAGS_P2P)
                     ? FLAGS_TOPOLOGY_MODE_PT_PT
                     : FLAGS_TOPOLOGY_MODE_LOOP);
         }
     }
     if (phba->hba_flag & HBA_PERSISTENT_TOPO) {
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "2020 Using persistent topology value [%s]",
                 lpfc_topo_to_str[phba->cfg_topology]);
     } else {
         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
                 "2021 Invalid topology values from FW "
                 "Using driver parameter defined value [%s]",
                 lpfc_topo_to_str[phba->cfg_topology]);
     }
 }
 
 /**
  * lpfc_sli4_read_config - Get the config parameters.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to read the configuration parameters from the HBA.
  * The configuration parameters are used to set the base and maximum values
  * for RPI's XRI's VPI's VFI's and FCFIs. These values also affect the resource
  * allocation for the port.
  *
  * Return codes
  *  0 - successful
  *  -ENOMEM - No available memory
  *      -EIO - The mailbox failed to complete successfully.
  **/
 int
 lpfc_sli4_read_config(struct lpfc_hba *phba)
 {
     LPFC_MBOXQ_t *pmb;
     struct lpfc_mbx_read_config *rd_config;
     union  lpfc_sli4_cfg_shdr *shdr;
     uint32_t shdr_status, shdr_add_status;
     struct lpfc_mbx_get_func_cfg *get_func_cfg;
     struct lpfc_rsrc_desc_fcfcoe *desc;
     char *pdesc_0;
     uint16_t forced_link_speed;
     uint32_t if_type, qmin, fawwpn;
     int length, i, rc = 0, rc2;
 
     pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!pmb) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2011 Unable to allocate memory for issuing "
                 "SLI_CONFIG_SPECIAL mailbox command\n");
         return -ENOMEM;
     }
 
     lpfc_read_config(phba, pmb);
 
     rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
     if (rc != MBX_SUCCESS) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2012 Mailbox failed , mbxCmd x%x "
                 "READ_CONFIG, mbxStatus x%x\n",
                 bf_get(lpfc_mqe_command, &pmb->u.mqe),
                 bf_get(lpfc_mqe_status, &pmb->u.mqe));
         rc = -EIO;
     } else {
         rd_config = &pmb->u.mqe.un.rd_config;
         if (bf_get(lpfc_mbx_rd_conf_lnk_ldv, rd_config)) {
             phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_VAL;
             phba->sli4_hba.lnk_info.lnk_tp =
                 bf_get(lpfc_mbx_rd_conf_lnk_type, rd_config);
             phba->sli4_hba.lnk_info.lnk_no =
                 bf_get(lpfc_mbx_rd_conf_lnk_numb, rd_config);
             lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                     "3081 lnk_type:%d, lnk_numb:%d\n",
                     phba->sli4_hba.lnk_info.lnk_tp,
                     phba->sli4_hba.lnk_info.lnk_no);
         } else
             lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
                     "3082 Mailbox (x%x) returned ldv:x0\n",
                     bf_get(lpfc_mqe_command, &pmb->u.mqe));
         if (bf_get(lpfc_mbx_rd_conf_bbscn_def, rd_config)) {
             phba->bbcredit_support = 1;
             phba->sli4_hba.bbscn_params.word0 = rd_config->word8;
         }
 
         fawwpn = bf_get(lpfc_mbx_rd_conf_fawwpn, rd_config);
 
         if (fawwpn) {
             lpfc_printf_log(phba, KERN_INFO,
                     LOG_INIT | LOG_DISCOVERY,
                     "2702 READ_CONFIG: FA-PWWN is "
                     "configured on\n");
             phba->sli4_hba.fawwpn_flag |= LPFC_FAWWPN_CONFIG;
         } else {
             /* Clear FW configured flag, preserve driver flag */
             phba->sli4_hba.fawwpn_flag &= ~LPFC_FAWWPN_CONFIG;
         }
 
         phba->sli4_hba.conf_trunk =
             bf_get(lpfc_mbx_rd_conf_trunk, rd_config);
         phba->sli4_hba.extents_in_use =
             bf_get(lpfc_mbx_rd_conf_extnts_inuse, rd_config);
 
         phba->sli4_hba.max_cfg_param.max_xri =
             bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
         /* Reduce resource usage in kdump environment */
         if (is_kdump_kernel() &&
             phba->sli4_hba.max_cfg_param.max_xri > 512)
             phba->sli4_hba.max_cfg_param.max_xri = 512;
         phba->sli4_hba.max_cfg_param.xri_base =
             bf_get(lpfc_mbx_rd_conf_xri_base, rd_config);
         phba->sli4_hba.max_cfg_param.max_vpi =
             bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config);
         /* Limit the max we support */
         if (phba->sli4_hba.max_cfg_param.max_vpi > LPFC_MAX_VPORTS)
             phba->sli4_hba.max_cfg_param.max_vpi = LPFC_MAX_VPORTS;
         phba->sli4_hba.max_cfg_param.vpi_base =
             bf_get(lpfc_mbx_rd_conf_vpi_base, rd_config);
         phba->sli4_hba.max_cfg_param.max_rpi =
             bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
         phba->sli4_hba.max_cfg_param.rpi_base =
             bf_get(lpfc_mbx_rd_conf_rpi_base, rd_config);
         phba->sli4_hba.max_cfg_param.max_vfi =
             bf_get(lpfc_mbx_rd_conf_vfi_count, rd_config);
         phba->sli4_hba.max_cfg_param.vfi_base =
             bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config);
         phba->sli4_hba.max_cfg_param.max_fcfi =
             bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config);
         phba->sli4_hba.max_cfg_param.max_eq =
             bf_get(lpfc_mbx_rd_conf_eq_count, rd_config);
         phba->sli4_hba.max_cfg_param.max_rq =
             bf_get(lpfc_mbx_rd_conf_rq_count, rd_config);
         phba->sli4_hba.max_cfg_param.max_wq =
             bf_get(lpfc_mbx_rd_conf_wq_count, rd_config);
         phba->sli4_hba.max_cfg_param.max_cq =
             bf_get(lpfc_mbx_rd_conf_cq_count, rd_config);
         phba->lmt = bf_get(lpfc_mbx_rd_conf_lmt, rd_config);
         phba->sli4_hba.next_xri = phba->sli4_hba.max_cfg_param.xri_base;
         phba->vpi_base = phba->sli4_hba.max_cfg_param.vpi_base;
         phba->vfi_base = phba->sli4_hba.max_cfg_param.vfi_base;
         phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ?
                 (phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0;
         phba->max_vports = phba->max_vpi;
 
         /* Next decide on FPIN or Signal E2E CGN support
          * For congestion alarms and warnings valid combination are:
          * 1. FPIN alarms / FPIN warnings
          * 2. Signal alarms / Signal warnings
          * 3. FPIN alarms / Signal warnings
          * 4. Signal alarms / FPIN warnings
          *
          * Initialize the adapter frequency to 100 mSecs
          */
         phba->cgn_reg_fpin = LPFC_CGN_FPIN_BOTH;
         phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
         phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
 
         if (lpfc_use_cgn_signal) {
             if (bf_get(lpfc_mbx_rd_conf_wcs, rd_config)) {
                 phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;
                 phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;
             }
             if (bf_get(lpfc_mbx_rd_conf_acs, rd_config)) {
                 /* MUST support both alarm and warning
                  * because EDC does not support alarm alone.
                  */
                 if (phba->cgn_reg_signal !=
                     EDC_CG_SIG_WARN_ONLY) {
                     /* Must support both or none */
                     phba->cgn_reg_fpin = LPFC_CGN_FPIN_BOTH;
                     phba->cgn_reg_signal =
                         EDC_CG_SIG_NOTSUPPORTED;
                 } else {
                     phba->cgn_reg_signal =
                         EDC_CG_SIG_WARN_ALARM;
                     phba->cgn_reg_fpin =
                         LPFC_CGN_FPIN_NONE;
                 }
             }
         }
 
         /* Set the congestion initial signal and fpin values. */
         phba->cgn_init_reg_fpin = phba->cgn_reg_fpin;
         phba->cgn_init_reg_signal = phba->cgn_reg_signal;
 
         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
                 "6446 READ_CONFIG reg_sig x%x reg_fpin:x%x\n",
                 phba->cgn_reg_signal, phba->cgn_reg_fpin);
 
         lpfc_map_topology(phba, rd_config);
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "2003 cfg params Extents? %d "
                 "XRI(B:%d M:%d), "
                 "VPI(B:%d M:%d) "
                 "VFI(B:%d M:%d) "
                 "RPI(B:%d M:%d) "
                 "FCFI:%d EQ:%d CQ:%d WQ:%d RQ:%d lmt:x%x\n",
                 phba->sli4_hba.extents_in_use,
                 phba->sli4_hba.max_cfg_param.xri_base,
                 phba->sli4_hba.max_cfg_param.max_xri,
                 phba->sli4_hba.max_cfg_param.vpi_base,
                 phba->sli4_hba.max_cfg_param.max_vpi,
                 phba->sli4_hba.max_cfg_param.vfi_base,
                 phba->sli4_hba.max_cfg_param.max_vfi,
                 phba->sli4_hba.max_cfg_param.rpi_base,
                 phba->sli4_hba.max_cfg_param.max_rpi,
                 phba->sli4_hba.max_cfg_param.max_fcfi,
                 phba->sli4_hba.max_cfg_param.max_eq,
                 phba->sli4_hba.max_cfg_param.max_cq,
                 phba->sli4_hba.max_cfg_param.max_wq,
                 phba->sli4_hba.max_cfg_param.max_rq,
                 phba->lmt);
 
         /*
          * Calculate queue resources based on how
          * many WQ/CQ/EQs are available.
          */
         qmin = phba->sli4_hba.max_cfg_param.max_wq;
         if (phba->sli4_hba.max_cfg_param.max_cq < qmin)
             qmin = phba->sli4_hba.max_cfg_param.max_cq;
         if (phba->sli4_hba.max_cfg_param.max_eq < qmin)
             qmin = phba->sli4_hba.max_cfg_param.max_eq;
         /*
          * Whats left after this can go toward NVME / FCP.
          * The minus 4 accounts for ELS, NVME LS, MBOX
          * plus one extra. When configured for
          * NVMET, FCP io channel WQs are not created.
          */
         qmin -= 4;
 
         /* Check to see if there is enough for NVME */
         if ((phba->cfg_irq_chann > qmin) ||
             (phba->cfg_hdw_queue > qmin)) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2005 Reducing Queues - "
                     "FW resource limitation: "
                     "WQ %d CQ %d EQ %d: min %d: "
                     "IRQ %d HDWQ %d\n",
                     phba->sli4_hba.max_cfg_param.max_wq,
                     phba->sli4_hba.max_cfg_param.max_cq,
                     phba->sli4_hba.max_cfg_param.max_eq,
                     qmin, phba->cfg_irq_chann,
                     phba->cfg_hdw_queue);
 
             if (phba->cfg_irq_chann > qmin)
                 phba->cfg_irq_chann = qmin;
             if (phba->cfg_hdw_queue > qmin)
                 phba->cfg_hdw_queue = qmin;
         }
     }
 
     if (rc)
         goto read_cfg_out;
 
     /* Update link speed if forced link speed is supported */
     if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
     if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
         forced_link_speed =
             bf_get(lpfc_mbx_rd_conf_link_speed, rd_config);
         if (forced_link_speed) {
             phba->hba_flag |= HBA_FORCED_LINK_SPEED;
 
             switch (forced_link_speed) {
             case LINK_SPEED_1G:
                 phba->cfg_link_speed =
                     LPFC_USER_LINK_SPEED_1G;
                 break;
             case LINK_SPEED_2G:
                 phba->cfg_link_speed =
                     LPFC_USER_LINK_SPEED_2G;
                 break;
             case LINK_SPEED_4G:
                 phba->cfg_link_speed =
                     LPFC_USER_LINK_SPEED_4G;
                 break;
             case LINK_SPEED_8G:
                 phba->cfg_link_speed =
                     LPFC_USER_LINK_SPEED_8G;
                 break;
             case LINK_SPEED_10G:
                 phba->cfg_link_speed =
                     LPFC_USER_LINK_SPEED_10G;
                 break;
             case LINK_SPEED_16G:
                 phba->cfg_link_speed =
                     LPFC_USER_LINK_SPEED_16G;
                 break;
             case LINK_SPEED_32G:
                 phba->cfg_link_speed =
                     LPFC_USER_LINK_SPEED_32G;
                 break;
             case LINK_SPEED_64G:
                 phba->cfg_link_speed =
                     LPFC_USER_LINK_SPEED_64G;
                 break;
             case 0xffff:
                 phba->cfg_link_speed =
                     LPFC_USER_LINK_SPEED_AUTO;
                 break;
             default:
                 lpfc_printf_log(phba, KERN_ERR,
                         LOG_TRACE_EVENT,
                         "0047 Unrecognized link "
                         "speed : %d\n",
                         forced_link_speed);
                 phba->cfg_link_speed =
                     LPFC_USER_LINK_SPEED_AUTO;
             }
         }
     }
 
     /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
     length = phba->sli4_hba.max_cfg_param.max_xri -
             lpfc_sli4_get_els_iocb_cnt(phba);
     if (phba->cfg_hba_queue_depth > length) {
         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                 "3361 HBA queue depth changed from %d to %d\n",
                 phba->cfg_hba_queue_depth, length);
         phba->cfg_hba_queue_depth = length;
     }
 
     if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
         LPFC_SLI_INTF_IF_TYPE_2)
         goto read_cfg_out;
 
     /* get the pf# and vf# for SLI4 if_type 2 port */
     length = (sizeof(struct lpfc_mbx_get_func_cfg) -
           sizeof(struct lpfc_sli4_cfg_mhdr));
     lpfc_sli4_config(phba, pmb, LPFC_MBOX_SUBSYSTEM_COMMON,
              LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG,
              length, LPFC_SLI4_MBX_EMBED);
 
     rc2 = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
     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 (rc2 || shdr_status || shdr_add_status) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3026 Mailbox failed , mbxCmd x%x "
                 "GET_FUNCTION_CONFIG, mbxStatus x%x\n",
                 bf_get(lpfc_mqe_command, &pmb->u.mqe),
                 bf_get(lpfc_mqe_status, &pmb->u.mqe));
         goto read_cfg_out;
     }
 
     /* search for fc_fcoe resrouce descriptor */
     get_func_cfg = &pmb->u.mqe.un.get_func_cfg;
 
     pdesc_0 = (char *)&get_func_cfg->func_cfg.desc[0];
     desc = (struct lpfc_rsrc_desc_fcfcoe *)pdesc_0;
     length = bf_get(lpfc_rsrc_desc_fcfcoe_length, desc);
     if (length == LPFC_RSRC_DESC_TYPE_FCFCOE_V0_RSVD)
         length = LPFC_RSRC_DESC_TYPE_FCFCOE_V0_LENGTH;
     else if (length != LPFC_RSRC_DESC_TYPE_FCFCOE_V1_LENGTH)
         goto read_cfg_out;
 
     for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) {
         desc = (struct lpfc_rsrc_desc_fcfcoe *)(pdesc_0 + length * i);
         if (LPFC_RSRC_DESC_TYPE_FCFCOE ==
             bf_get(lpfc_rsrc_desc_fcfcoe_type, desc)) {
             phba->sli4_hba.iov.pf_number =
                 bf_get(lpfc_rsrc_desc_fcfcoe_pfnum, desc);
             phba->sli4_hba.iov.vf_number =
                 bf_get(lpfc_rsrc_desc_fcfcoe_vfnum, desc);
             break;
         }
     }
 
     if (i < LPFC_RSRC_DESC_MAX_NUM)
         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                 "3027 GET_FUNCTION_CONFIG: pf_number:%d, "
                 "vf_number:%d\n", phba->sli4_hba.iov.pf_number,
                 phba->sli4_hba.iov.vf_number);
     else
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3028 GET_FUNCTION_CONFIG: failed to find "
                 "Resource Descriptor:x%x\n",
                 LPFC_RSRC_DESC_TYPE_FCFCOE);
 
 read_cfg_out:
     mempool_free(pmb, phba->mbox_mem_pool);
     return rc;
 }
 
 /**
  * lpfc_setup_endian_order - Write endian order to an SLI4 if_type 0 port.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to setup the port-side endian order when
  * the port if_type is 0.  This routine has no function for other
  * if_types.
  *
  * Return codes
  *  0 - successful
  *  -ENOMEM - No available memory
  *      -EIO - The mailbox failed to complete successfully.
  **/
 static int
 lpfc_setup_endian_order(struct lpfc_hba *phba)
 {
     LPFC_MBOXQ_t *mboxq;
     uint32_t if_type, rc = 0;
     uint32_t endian_mb_data[2] = {HOST_ENDIAN_LOW_WORD0,
                       HOST_ENDIAN_HIGH_WORD1};
 
     if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
     switch (if_type) {
     case LPFC_SLI_INTF_IF_TYPE_0:
         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
                                GFP_KERNEL);
         if (!mboxq) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0492 Unable to allocate memory for "
                     "issuing SLI_CONFIG_SPECIAL mailbox "
                     "command\n");
             return -ENOMEM;
         }
 
         /*
          * The SLI4_CONFIG_SPECIAL mailbox command requires the first
          * two words to contain special data values and no other data.
          */
         memset(mboxq, 0, sizeof(LPFC_MBOXQ_t));
         memcpy(&mboxq->u.mqe, &endian_mb_data, sizeof(endian_mb_data));
         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
         if (rc != MBX_SUCCESS) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0493 SLI_CONFIG_SPECIAL mailbox "
                     "failed with status x%x\n",
                     rc);
             rc = -EIO;
         }
         mempool_free(mboxq, phba->mbox_mem_pool);
         break;
     case LPFC_SLI_INTF_IF_TYPE_6:
     case LPFC_SLI_INTF_IF_TYPE_2:
     case LPFC_SLI_INTF_IF_TYPE_1:
     default:
         break;
     }
     return rc;
 }
 
 /**
  * lpfc_sli4_queue_verify - Verify and update EQ counts
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to check the user settable queue counts for EQs.
  * After this routine is called the counts will be set to valid values that
  * adhere to the constraints of the system's interrupt vectors and the port's
  * queue resources.
  *
  * Return codes
  *      0 - successful
  *      -ENOMEM - No available memory
  **/
 static int
 lpfc_sli4_queue_verify(struct lpfc_hba *phba)
 {
     /*
      * Sanity check for configured queue parameters against the run-time
      * device parameters
      */
 
     if (phba->nvmet_support) {
         if (phba->cfg_hdw_queue < phba->cfg_nvmet_mrq)
             phba->cfg_nvmet_mrq = phba->cfg_hdw_queue;
         if (phba->cfg_nvmet_mrq > LPFC_NVMET_MRQ_MAX)
             phba->cfg_nvmet_mrq = LPFC_NVMET_MRQ_MAX;
     }
 
     lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
             "2574 IO channels: hdwQ %d IRQ %d MRQ: %d\n",
             phba->cfg_hdw_queue, phba->cfg_irq_chann,
             phba->cfg_nvmet_mrq);
 
     /* Get EQ depth from module parameter, fake the default for now */
     phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
     phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
 
     /* Get CQ depth from module parameter, fake the default for now */
     phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
     phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
     return 0;
 }
 
 static int
 lpfc_alloc_io_wq_cq(struct lpfc_hba *phba, int idx)
 {
     struct lpfc_queue *qdesc;
     u32 wqesize;
     int cpu;
 
     cpu = lpfc_find_cpu_handle(phba, idx, LPFC_FIND_BY_HDWQ);
     /* Create Fast Path IO CQs */
     if (phba->enab_exp_wqcq_pages)
         /* Increase the CQ size when WQEs contain an embedded cdb */
         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,
                           phba->sli4_hba.cq_esize,
                           LPFC_CQE_EXP_COUNT, cpu);
 
     else
         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
                           phba->sli4_hba.cq_esize,
                           phba->sli4_hba.cq_ecount, cpu);
     if (!qdesc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0499 Failed allocate fast-path IO CQ (%d)\n",
                 idx);
         return 1;
     }
     qdesc->qe_valid = 1;
     qdesc->hdwq = idx;
     qdesc->chann = cpu;
     phba->sli4_hba.hdwq[idx].io_cq = qdesc;
 
     /* Create Fast Path IO WQs */
     if (phba->enab_exp_wqcq_pages) {
         /* Increase the WQ size when WQEs contain an embedded cdb */
         wqesize = (phba->fcp_embed_io) ?
             LPFC_WQE128_SIZE : phba->sli4_hba.wq_esize;
         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,
                           wqesize,
                           LPFC_WQE_EXP_COUNT, cpu);
     } else
         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
                           phba->sli4_hba.wq_esize,
                           phba->sli4_hba.wq_ecount, cpu);
 
     if (!qdesc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0503 Failed allocate fast-path IO WQ (%d)\n",
                 idx);
         return 1;
     }
     qdesc->hdwq = idx;
     qdesc->chann = cpu;
     phba->sli4_hba.hdwq[idx].io_wq = qdesc;
     list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
     return 0;
 }
 
 /**
  * lpfc_sli4_queue_create - Create all the SLI4 queues
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to allocate all the SLI4 queues for the FCoE HBA
  * operation. For each SLI4 queue type, the parameters such as queue entry
  * count (queue depth) shall be taken from the module parameter. For now,
  * we just use some constant number as place holder.
  *
  * Return codes
  *      0 - successful
  *      -ENOMEM - No availble memory
  *      -EIO - The mailbox failed to complete successfully.
  **/
 int
 lpfc_sli4_queue_create(struct lpfc_hba *phba)
 {
     struct lpfc_queue *qdesc;
     int idx, cpu, eqcpu;
     struct lpfc_sli4_hdw_queue *qp;
     struct lpfc_vector_map_info *cpup;
     struct lpfc_vector_map_info *eqcpup;
     struct lpfc_eq_intr_info *eqi;
 
     /*
      * Create HBA Record arrays.
      * Both NVME and FCP will share that same vectors / EQs
      */
     phba->sli4_hba.mq_esize = LPFC_MQE_SIZE;
     phba->sli4_hba.mq_ecount = LPFC_MQE_DEF_COUNT;
     phba->sli4_hba.wq_esize = LPFC_WQE_SIZE;
     phba->sli4_hba.wq_ecount = LPFC_WQE_DEF_COUNT;
     phba->sli4_hba.rq_esize = LPFC_RQE_SIZE;
     phba->sli4_hba.rq_ecount = LPFC_RQE_DEF_COUNT;
     phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
     phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
     phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
     phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
 
     if (!phba->sli4_hba.hdwq) {
         phba->sli4_hba.hdwq = kcalloc(
             phba->cfg_hdw_queue, sizeof(struct lpfc_sli4_hdw_queue),
             GFP_KERNEL);
         if (!phba->sli4_hba.hdwq) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "6427 Failed allocate memory for "
                     "fast-path Hardware Queue array\n");
             goto out_error;
         }
         /* Prepare hardware queues to take IO buffers */
         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
             qp = &phba->sli4_hba.hdwq[idx];
             spin_lock_init(&qp->io_buf_list_get_lock);
             spin_lock_init(&qp->io_buf_list_put_lock);
             INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);
             INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
             qp->get_io_bufs = 0;
             qp->put_io_bufs = 0;
             qp->total_io_bufs = 0;
             spin_lock_init(&qp->abts_io_buf_list_lock);
             INIT_LIST_HEAD(&qp->lpfc_abts_io_buf_list);
             qp->abts_scsi_io_bufs = 0;
             qp->abts_nvme_io_bufs = 0;
             INIT_LIST_HEAD(&qp->sgl_list);
             INIT_LIST_HEAD(&qp->cmd_rsp_buf_list);
             spin_lock_init(&qp->hdwq_lock);
         }
     }
 
     if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
         if (phba->nvmet_support) {
             phba->sli4_hba.nvmet_cqset = kcalloc(
                     phba->cfg_nvmet_mrq,
                     sizeof(struct lpfc_queue *),
                     GFP_KERNEL);
             if (!phba->sli4_hba.nvmet_cqset) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "3121 Fail allocate memory for "
                     "fast-path CQ set array\n");
                 goto out_error;
             }
             phba->sli4_hba.nvmet_mrq_hdr = kcalloc(
                     phba->cfg_nvmet_mrq,
                     sizeof(struct lpfc_queue *),
                     GFP_KERNEL);
             if (!phba->sli4_hba.nvmet_mrq_hdr) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "3122 Fail allocate memory for "
                     "fast-path RQ set hdr array\n");
                 goto out_error;
             }
             phba->sli4_hba.nvmet_mrq_data = kcalloc(
                     phba->cfg_nvmet_mrq,
                     sizeof(struct lpfc_queue *),
                     GFP_KERNEL);
             if (!phba->sli4_hba.nvmet_mrq_data) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "3124 Fail allocate memory for "
                     "fast-path RQ set data array\n");
                 goto out_error;
             }
         }
     }
 
     INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);
 
     /* Create HBA Event Queues (EQs) */
     for_each_present_cpu(cpu) {
         /* We only want to create 1 EQ per vector, even though
          * multiple CPUs might be using that vector. so only
          * selects the CPUs that are LPFC_CPU_FIRST_IRQ.
          */
         cpup = &phba->sli4_hba.cpu_map[cpu];
         if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
             continue;
 
         /* Get a ptr to the Hardware Queue associated with this CPU */
         qp = &phba->sli4_hba.hdwq[cpup->hdwq];
 
         /* Allocate an EQ */
         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
                           phba->sli4_hba.eq_esize,
                           phba->sli4_hba.eq_ecount, cpu);
         if (!qdesc) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0497 Failed allocate EQ (%d)\n",
                     cpup->hdwq);
             goto out_error;
         }
         qdesc->qe_valid = 1;
         qdesc->hdwq = cpup->hdwq;
         qdesc->chann = cpu; /* First CPU this EQ is affinitized to */
         qdesc->last_cpu = qdesc->chann;
 
         /* Save the allocated EQ in the Hardware Queue */
         qp->hba_eq = qdesc;
 
         eqi = per_cpu_ptr(phba->sli4_hba.eq_info, qdesc->last_cpu);
         list_add(&qdesc->cpu_list, &eqi->list);
     }
 
     /* Now we need to populate the other Hardware Queues, that share
      * an IRQ vector, with the associated EQ ptr.
      */
     for_each_present_cpu(cpu) {
         cpup = &phba->sli4_hba.cpu_map[cpu];
 
         /* Check for EQ already allocated in previous loop */
         if (cpup->flag & LPFC_CPU_FIRST_IRQ)
             continue;
 
         /* Check for multiple CPUs per hdwq */
         qp = &phba->sli4_hba.hdwq[cpup->hdwq];
         if (qp->hba_eq)
             continue;
 
         /* We need to share an EQ for this hdwq */
         eqcpu = lpfc_find_cpu_handle(phba, cpup->eq, LPFC_FIND_BY_EQ);
         eqcpup = &phba->sli4_hba.cpu_map[eqcpu];
         qp->hba_eq = phba->sli4_hba.hdwq[eqcpup->hdwq].hba_eq;
     }
 
     /* Allocate IO Path SLI4 CQ/WQs */
     for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
         if (lpfc_alloc_io_wq_cq(phba, idx))
             goto out_error;
     }
 
     if (phba->nvmet_support) {
         for (idx = 0; idx < phba->cfg_nvmet_mrq; idx++) {
             cpu = lpfc_find_cpu_handle(phba, idx,
                            LPFC_FIND_BY_HDWQ);
             qdesc = lpfc_sli4_queue_alloc(phba,
                               LPFC_DEFAULT_PAGE_SIZE,
                               phba->sli4_hba.cq_esize,
                               phba->sli4_hba.cq_ecount,
                               cpu);
             if (!qdesc) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "3142 Failed allocate NVME "
                         "CQ Set (%d)\n", idx);
                 goto out_error;
             }
             qdesc->qe_valid = 1;
             qdesc->hdwq = idx;
             qdesc->chann = cpu;
             phba->sli4_hba.nvmet_cqset[idx] = qdesc;
         }
     }
 
     /*
      * Create Slow Path Completion Queues (CQs)
      */
 
     cpu = lpfc_find_cpu_handle(phba, 0, LPFC_FIND_BY_EQ);
     /* Create slow-path Mailbox Command Complete Queue */
     qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
                       phba->sli4_hba.cq_esize,
                       phba->sli4_hba.cq_ecount, cpu);
     if (!qdesc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0500 Failed allocate slow-path mailbox CQ\n");
         goto out_error;
     }
     qdesc->qe_valid = 1;
     phba->sli4_hba.mbx_cq = qdesc;
 
     /* Create slow-path ELS Complete Queue */
     qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
                       phba->sli4_hba.cq_esize,
                       phba->sli4_hba.cq_ecount, cpu);
     if (!qdesc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0501 Failed allocate slow-path ELS CQ\n");
         goto out_error;
     }
     qdesc->qe_valid = 1;
     qdesc->chann = cpu;
     phba->sli4_hba.els_cq = qdesc;
 
 
     /*
      * Create Slow Path Work Queues (WQs)
      */
 
     /* Create Mailbox Command Queue */
 
     qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
                       phba->sli4_hba.mq_esize,
                       phba->sli4_hba.mq_ecount, cpu);
     if (!qdesc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0505 Failed allocate slow-path MQ\n");
         goto out_error;
     }
     qdesc->chann = cpu;
     phba->sli4_hba.mbx_wq = qdesc;
 
     /*
      * Create ELS Work Queues
      */
 
     /* Create slow-path ELS Work Queue */
     qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
                       phba->sli4_hba.wq_esize,
                       phba->sli4_hba.wq_ecount, cpu);
     if (!qdesc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0504 Failed allocate slow-path ELS WQ\n");
         goto out_error;
     }
     qdesc->chann = cpu;
     phba->sli4_hba.els_wq = qdesc;
     list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
 
     if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
         /* Create NVME LS Complete Queue */
         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
                           phba->sli4_hba.cq_esize,
                           phba->sli4_hba.cq_ecount, cpu);
         if (!qdesc) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "6079 Failed allocate NVME LS CQ\n");
             goto out_error;
         }
         qdesc->chann = cpu;
         qdesc->qe_valid = 1;
         phba->sli4_hba.nvmels_cq = qdesc;
 
         /* Create NVME LS Work Queue */
         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
                           phba->sli4_hba.wq_esize,
                           phba->sli4_hba.wq_ecount, cpu);
         if (!qdesc) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "6080 Failed allocate NVME LS WQ\n");
             goto out_error;
         }
         qdesc->chann = cpu;
         phba->sli4_hba.nvmels_wq = qdesc;
         list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
     }
 
     /*
      * Create Receive Queue (RQ)
      */
 
     /* Create Receive Queue for header */
     qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
                       phba->sli4_hba.rq_esize,
                       phba->sli4_hba.rq_ecount, cpu);
     if (!qdesc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0506 Failed allocate receive HRQ\n");
         goto out_error;
     }
     phba->sli4_hba.hdr_rq = qdesc;
 
     /* Create Receive Queue for data */
     qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
                       phba->sli4_hba.rq_esize,
                       phba->sli4_hba.rq_ecount, cpu);
     if (!qdesc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0507 Failed allocate receive DRQ\n");
         goto out_error;
     }
     phba->sli4_hba.dat_rq = qdesc;
 
     if ((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) &&
         phba->nvmet_support) {
         for (idx = 0; idx < phba->cfg_nvmet_mrq; idx++) {
             cpu = lpfc_find_cpu_handle(phba, idx,
                            LPFC_FIND_BY_HDWQ);
             /* Create NVMET Receive Queue for header */
             qdesc = lpfc_sli4_queue_alloc(phba,
                               LPFC_DEFAULT_PAGE_SIZE,
                               phba->sli4_hba.rq_esize,
                               LPFC_NVMET_RQE_DEF_COUNT,
                               cpu);
             if (!qdesc) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "3146 Failed allocate "
                         "receive HRQ\n");
                 goto out_error;
             }
             qdesc->hdwq = idx;
             phba->sli4_hba.nvmet_mrq_hdr[idx] = qdesc;
 
             /* Only needed for header of RQ pair */
             qdesc->rqbp = kzalloc_node(sizeof(*qdesc->rqbp),
                            GFP_KERNEL,
                            cpu_to_node(cpu));
             if (qdesc->rqbp == NULL) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "6131 Failed allocate "
                         "Header RQBP\n");
                 goto out_error;
             }
 
             /* Put list in known state in case driver load fails. */
             INIT_LIST_HEAD(&qdesc->rqbp->rqb_buffer_list);
 
             /* Create NVMET Receive Queue for data */
             qdesc = lpfc_sli4_queue_alloc(phba,
                               LPFC_DEFAULT_PAGE_SIZE,
                               phba->sli4_hba.rq_esize,
                               LPFC_NVMET_RQE_DEF_COUNT,
                               cpu);
             if (!qdesc) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "3156 Failed allocate "
                         "receive DRQ\n");
                 goto out_error;
             }
             qdesc->hdwq = idx;
             phba->sli4_hba.nvmet_mrq_data[idx] = qdesc;
         }
     }
 
     /* Clear NVME stats */
     if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
             memset(&phba->sli4_hba.hdwq[idx].nvme_cstat, 0,
                    sizeof(phba->sli4_hba.hdwq[idx].nvme_cstat));
         }
     }
 
     /* Clear SCSI stats */
     if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) {
         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
             memset(&phba->sli4_hba.hdwq[idx].scsi_cstat, 0,
                    sizeof(phba->sli4_hba.hdwq[idx].scsi_cstat));
         }
     }
 
     return 0;
 
 out_error:
     lpfc_sli4_queue_destroy(phba);
     return -ENOMEM;
 }
 
 static inline void
 __lpfc_sli4_release_queue(struct lpfc_queue **qp)
 {
     if (*qp != NULL) {
         lpfc_sli4_queue_free(*qp);
         *qp = NULL;
     }
 }
 
 static inline void
 lpfc_sli4_release_queues(struct lpfc_queue ***qs, int max)
 {
     int idx;
 
     if (*qs == NULL)
         return;
 
     for (idx = 0; idx < max; idx++)
         __lpfc_sli4_release_queue(&(*qs)[idx]);
 
     kfree(*qs);
     *qs = NULL;
 }
 
 static inline void
 lpfc_sli4_release_hdwq(struct lpfc_hba *phba)
 {
     struct lpfc_sli4_hdw_queue *hdwq;
     struct lpfc_queue *eq;
     uint32_t idx;
 
     hdwq = phba->sli4_hba.hdwq;
 
     /* Loop thru all Hardware Queues */
     for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
         /* Free the CQ/WQ corresponding to the Hardware Queue */
         lpfc_sli4_queue_free(hdwq[idx].io_cq);
         lpfc_sli4_queue_free(hdwq[idx].io_wq);
         hdwq[idx].hba_eq = NULL;
         hdwq[idx].io_cq = NULL;
         hdwq[idx].io_wq = NULL;
         if (phba->cfg_xpsgl && !phba->nvmet_support)
             lpfc_free_sgl_per_hdwq(phba, &hdwq[idx]);
         lpfc_free_cmd_rsp_buf_per_hdwq(phba, &hdwq[idx]);
     }
     /* Loop thru all IRQ vectors */
     for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
         /* Free the EQ corresponding to the IRQ vector */
         eq = phba->sli4_hba.hba_eq_hdl[idx].eq;
         lpfc_sli4_queue_free(eq);
         phba->sli4_hba.hba_eq_hdl[idx].eq = NULL;
     }
 }
 
 /**
  * lpfc_sli4_queue_destroy - Destroy all the SLI4 queues
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to release all the SLI4 queues with the FCoE HBA
  * operation.
  *
  * Return codes
  *      0 - successful
  *      -ENOMEM - No available memory
  *      -EIO - The mailbox failed to complete successfully.
  **/
 void
 lpfc_sli4_queue_destroy(struct lpfc_hba *phba)
 {
     /*
      * Set FREE_INIT before beginning to free the queues.
      * Wait until the users of queues to acknowledge to
      * release queues by clearing FREE_WAIT.
      */
     spin_lock_irq(&phba->hbalock);
     phba->sli.sli_flag |= LPFC_QUEUE_FREE_INIT;
     while (phba->sli.sli_flag & LPFC_QUEUE_FREE_WAIT) {
         spin_unlock_irq(&phba->hbalock);
         msleep(20);
         spin_lock_irq(&phba->hbalock);
     }
     spin_unlock_irq(&phba->hbalock);
 
     lpfc_sli4_cleanup_poll_list(phba);
 
     /* Release HBA eqs */
     if (phba->sli4_hba.hdwq)
         lpfc_sli4_release_hdwq(phba);
 
     if (phba->nvmet_support) {
         lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_cqset,
                      phba->cfg_nvmet_mrq);
 
         lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_mrq_hdr,
                      phba->cfg_nvmet_mrq);
         lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_mrq_data,
                      phba->cfg_nvmet_mrq);
     }
 
     /* Release mailbox command work queue */
     __lpfc_sli4_release_queue(&phba->sli4_hba.mbx_wq);
 
     /* Release ELS work queue */
     __lpfc_sli4_release_queue(&phba->sli4_hba.els_wq);
 
     /* Release ELS work queue */
     __lpfc_sli4_release_queue(&phba->sli4_hba.nvmels_wq);
 
     /* Release unsolicited receive queue */
     __lpfc_sli4_release_queue(&phba->sli4_hba.hdr_rq);
     __lpfc_sli4_release_queue(&phba->sli4_hba.dat_rq);
 
     /* Release ELS complete queue */
     __lpfc_sli4_release_queue(&phba->sli4_hba.els_cq);
 
     /* Release NVME LS complete queue */
     __lpfc_sli4_release_queue(&phba->sli4_hba.nvmels_cq);
 
     /* Release mailbox command complete queue */
     __lpfc_sli4_release_queue(&phba->sli4_hba.mbx_cq);
 
     /* Everything on this list has been freed */
     INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);
 
     /* Done with freeing the queues */
     spin_lock_irq(&phba->hbalock);
     phba->sli.sli_flag &= ~LPFC_QUEUE_FREE_INIT;
     spin_unlock_irq(&phba->hbalock);
 }
 
 int
 lpfc_free_rq_buffer(struct lpfc_hba *phba, struct lpfc_queue *rq)
 {
     struct lpfc_rqb *rqbp;
     struct lpfc_dmabuf *h_buf;
     struct rqb_dmabuf *rqb_buffer;
 
     rqbp = rq->rqbp;
     while (!list_empty(&rqbp->rqb_buffer_list)) {
         list_remove_head(&rqbp->rqb_buffer_list, h_buf,
                  struct lpfc_dmabuf, list);
 
         rqb_buffer = container_of(h_buf, struct rqb_dmabuf, hbuf);
         (rqbp->rqb_free_buffer)(phba, rqb_buffer);
         rqbp->buffer_count--;
     }
     return 1;
 }
 
 static int
 lpfc_create_wq_cq(struct lpfc_hba *phba, struct lpfc_queue *eq,
     struct lpfc_queue *cq, struct lpfc_queue *wq, uint16_t *cq_map,
     int qidx, uint32_t qtype)
 {
     struct lpfc_sli_ring *pring;
     int rc;
 
     if (!eq || !cq || !wq) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "6085 Fast-path %s (%d) not allocated\n",
             ((eq) ? ((cq) ? "WQ" : "CQ") : "EQ"), qidx);
         return -ENOMEM;
     }
 
     /* create the Cq first */
     rc = lpfc_cq_create(phba, cq, eq,
             (qtype == LPFC_MBOX) ? LPFC_MCQ : LPFC_WCQ, qtype);
     if (rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "6086 Failed setup of CQ (%d), rc = 0x%x\n",
                 qidx, (uint32_t)rc);
         return rc;
     }
 
     if (qtype != LPFC_MBOX) {
         /* Setup cq_map for fast lookup */
         if (cq_map)
             *cq_map = cq->queue_id;
 
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "6087 CQ setup: cq[%d]-id=%d, parent eq[%d]-id=%d\n",
             qidx, cq->queue_id, qidx, eq->queue_id);
 
         /* create the wq */
         rc = lpfc_wq_create(phba, wq, cq, qtype);
         if (rc) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "4618 Fail setup fastpath WQ (%d), rc = 0x%x\n",
                 qidx, (uint32_t)rc);
             /* no need to tear down cq - caller will do so */
             return rc;
         }
 
         /* Bind this CQ/WQ to the NVME ring */
         pring = wq->pring;
         pring->sli.sli4.wqp = (void *)wq;
         cq->pring = pring;
 
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "2593 WQ setup: wq[%d]-id=%d assoc=%d, cq[%d]-id=%d\n",
             qidx, wq->queue_id, wq->assoc_qid, qidx, cq->queue_id);
     } else {
         rc = lpfc_mq_create(phba, wq, cq, LPFC_MBOX);
         if (rc) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0539 Failed setup of slow-path MQ: "
                     "rc = 0x%x\n", rc);
             /* no need to tear down cq - caller will do so */
             return rc;
         }
 
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "2589 MBX MQ setup: wq-id=%d, parent cq-id=%d\n",
             phba->sli4_hba.mbx_wq->queue_id,
             phba->sli4_hba.mbx_cq->queue_id);
     }
 
     return 0;
 }
 
 /**
  * lpfc_setup_cq_lookup - Setup the CQ lookup table
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine will populate the cq_lookup table by all
  * available CQ queue_id's.
  **/
 static void
 lpfc_setup_cq_lookup(struct lpfc_hba *phba)
 {
     struct lpfc_queue *eq, *childq;
     int qidx;
 
     memset(phba->sli4_hba.cq_lookup, 0,
            (sizeof(struct lpfc_queue *) * (phba->sli4_hba.cq_max + 1)));
     /* Loop thru all IRQ vectors */
     for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
         /* Get the EQ corresponding to the IRQ vector */
         eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
         if (!eq)
             continue;
         /* Loop through all CQs associated with that EQ */
         list_for_each_entry(childq, &eq->child_list, list) {
             if (childq->queue_id > phba->sli4_hba.cq_max)
                 continue;
             if (childq->subtype == LPFC_IO)
                 phba->sli4_hba.cq_lookup[childq->queue_id] =
                     childq;
         }
     }
 }
 
 /**
  * lpfc_sli4_queue_setup - Set up all the SLI4 queues
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to set up all the SLI4 queues for the FCoE HBA
  * operation.
  *
  * Return codes
  *      0 - successful
  *      -ENOMEM - No available memory
  *      -EIO - The mailbox failed to complete successfully.
  **/
 int
 lpfc_sli4_queue_setup(struct lpfc_hba *phba)
 {
     uint32_t shdr_status, shdr_add_status;
     union lpfc_sli4_cfg_shdr *shdr;
     struct lpfc_vector_map_info *cpup;
     struct lpfc_sli4_hdw_queue *qp;
     LPFC_MBOXQ_t *mboxq;
     int qidx, cpu;
     uint32_t length, usdelay;
     int rc = -ENOMEM;
 
     /* Check for dual-ULP support */
     mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3249 Unable to allocate memory for "
                 "QUERY_FW_CFG mailbox command\n");
         return -ENOMEM;
     }
     length = (sizeof(struct lpfc_mbx_query_fw_config) -
           sizeof(struct lpfc_sli4_cfg_mhdr));
     lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
              LPFC_MBOX_OPCODE_QUERY_FW_CFG,
              length, LPFC_SLI4_MBX_EMBED);
 
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
 
     shdr = (union lpfc_sli4_cfg_shdr *)
             &mboxq->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 || rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3250 QUERY_FW_CFG mailbox failed with status "
                 "x%x add_status x%x, mbx status x%x\n",
                 shdr_status, shdr_add_status, rc);
         mempool_free(mboxq, phba->mbox_mem_pool);
         rc = -ENXIO;
         goto out_error;
     }
 
     phba->sli4_hba.fw_func_mode =
             mboxq->u.mqe.un.query_fw_cfg.rsp.function_mode;
     phba->sli4_hba.ulp0_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp0_mode;
     phba->sli4_hba.ulp1_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp1_mode;
     phba->sli4_hba.physical_port =
             mboxq->u.mqe.un.query_fw_cfg.rsp.physical_port;
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "3251 QUERY_FW_CFG: func_mode:x%x, ulp0_mode:x%x, "
             "ulp1_mode:x%x\n", phba->sli4_hba.fw_func_mode,
             phba->sli4_hba.ulp0_mode, phba->sli4_hba.ulp1_mode);
 
     mempool_free(mboxq, phba->mbox_mem_pool);
 
     /*
      * Set up HBA Event Queues (EQs)
      */
     qp = phba->sli4_hba.hdwq;
 
     /* Set up HBA event queue */
     if (!qp) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3147 Fast-path EQs not allocated\n");
         rc = -ENOMEM;
         goto out_error;
     }
 
     /* Loop thru all IRQ vectors */
     for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
         /* Create HBA Event Queues (EQs) in order */
         for_each_present_cpu(cpu) {
             cpup = &phba->sli4_hba.cpu_map[cpu];
 
             /* Look for the CPU thats using that vector with
              * LPFC_CPU_FIRST_IRQ set.
              */
             if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
                 continue;
             if (qidx != cpup->eq)
                 continue;
 
             /* Create an EQ for that vector */
             rc = lpfc_eq_create(phba, qp[cpup->hdwq].hba_eq,
                         phba->cfg_fcp_imax);
             if (rc) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "0523 Failed setup of fast-path"
                         " EQ (%d), rc = 0x%x\n",
                         cpup->eq, (uint32_t)rc);
                 goto out_destroy;
             }
 
             /* Save the EQ for that vector in the hba_eq_hdl */
             phba->sli4_hba.hba_eq_hdl[cpup->eq].eq =
                 qp[cpup->hdwq].hba_eq;
 
             lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                     "2584 HBA EQ setup: queue[%d]-id=%d\n",
                     cpup->eq,
                     qp[cpup->hdwq].hba_eq->queue_id);
         }
     }
 
     /* Loop thru all Hardware Queues */
     for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
         cpu = lpfc_find_cpu_handle(phba, qidx, LPFC_FIND_BY_HDWQ);
         cpup = &phba->sli4_hba.cpu_map[cpu];
 
         /* Create the CQ/WQ corresponding to the Hardware Queue */
         rc = lpfc_create_wq_cq(phba,
                        phba->sli4_hba.hdwq[cpup->hdwq].hba_eq,
                        qp[qidx].io_cq,
                        qp[qidx].io_wq,
                        &phba->sli4_hba.hdwq[qidx].io_cq_map,
                        qidx,
                        LPFC_IO);
         if (rc) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0535 Failed to setup fastpath "
                     "IO WQ/CQ (%d), rc = 0x%x\n",
                     qidx, (uint32_t)rc);
             goto out_destroy;
         }
     }
 
     /*
      * Set up Slow Path Complete Queues (CQs)
      */
 
     /* Set up slow-path MBOX CQ/MQ */
 
     if (!phba->sli4_hba.mbx_cq || !phba->sli4_hba.mbx_wq) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0528 %s not allocated\n",
                 phba->sli4_hba.mbx_cq ?
                 "Mailbox WQ" : "Mailbox CQ");
         rc = -ENOMEM;
         goto out_destroy;
     }
 
     rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
                    phba->sli4_hba.mbx_cq,
                    phba->sli4_hba.mbx_wq,
                    NULL, 0, LPFC_MBOX);
     if (rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "0529 Failed setup of mailbox WQ/CQ: rc = 0x%x\n",
             (uint32_t)rc);
         goto out_destroy;
     }
     if (phba->nvmet_support) {
         if (!phba->sli4_hba.nvmet_cqset) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "3165 Fast-path NVME CQ Set "
                     "array not allocated\n");
             rc = -ENOMEM;
             goto out_destroy;
         }
         if (phba->cfg_nvmet_mrq > 1) {
             rc = lpfc_cq_create_set(phba,
                     phba->sli4_hba.nvmet_cqset,
                     qp,
                     LPFC_WCQ, LPFC_NVMET);
             if (rc) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "3164 Failed setup of NVME CQ "
                         "Set, rc = 0x%x\n",
                         (uint32_t)rc);
                 goto out_destroy;
             }
         } else {
             /* Set up NVMET Receive Complete Queue */
             rc = lpfc_cq_create(phba, phba->sli4_hba.nvmet_cqset[0],
                         qp[0].hba_eq,
                         LPFC_WCQ, LPFC_NVMET);
             if (rc) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "6089 Failed setup NVMET CQ: "
                         "rc = 0x%x\n", (uint32_t)rc);
                 goto out_destroy;
             }
             phba->sli4_hba.nvmet_cqset[0]->chann = 0;
 
             lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                     "6090 NVMET CQ setup: cq-id=%d, "
                     "parent eq-id=%d\n",
                     phba->sli4_hba.nvmet_cqset[0]->queue_id,
                     qp[0].hba_eq->queue_id);
         }
     }
 
     /* Set up slow-path ELS WQ/CQ */
     if (!phba->sli4_hba.els_cq || !phba->sli4_hba.els_wq) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0530 ELS %s not allocated\n",
                 phba->sli4_hba.els_cq ? "WQ" : "CQ");
         rc = -ENOMEM;
         goto out_destroy;
     }
     rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
                    phba->sli4_hba.els_cq,
                    phba->sli4_hba.els_wq,
                    NULL, 0, LPFC_ELS);
     if (rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0525 Failed setup of ELS WQ/CQ: rc = 0x%x\n",
                 (uint32_t)rc);
         goto out_destroy;
     }
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "2590 ELS WQ setup: wq-id=%d, parent cq-id=%d\n",
             phba->sli4_hba.els_wq->queue_id,
             phba->sli4_hba.els_cq->queue_id);
 
     if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
         /* Set up NVME LS Complete Queue */
         if (!phba->sli4_hba.nvmels_cq || !phba->sli4_hba.nvmels_wq) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "6091 LS %s not allocated\n",
                     phba->sli4_hba.nvmels_cq ? "WQ" : "CQ");
             rc = -ENOMEM;
             goto out_destroy;
         }
         rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
                        phba->sli4_hba.nvmels_cq,
                        phba->sli4_hba.nvmels_wq,
                        NULL, 0, LPFC_NVME_LS);
         if (rc) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0526 Failed setup of NVVME LS WQ/CQ: "
                     "rc = 0x%x\n", (uint32_t)rc);
             goto out_destroy;
         }
 
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "6096 ELS WQ setup: wq-id=%d, "
                 "parent cq-id=%d\n",
                 phba->sli4_hba.nvmels_wq->queue_id,
                 phba->sli4_hba.nvmels_cq->queue_id);
     }
 
     /*
      * Create NVMET Receive Queue (RQ)
      */
     if (phba->nvmet_support) {
         if ((!phba->sli4_hba.nvmet_cqset) ||
             (!phba->sli4_hba.nvmet_mrq_hdr) ||
             (!phba->sli4_hba.nvmet_mrq_data)) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "6130 MRQ CQ Queues not "
                     "allocated\n");
             rc = -ENOMEM;
             goto out_destroy;
         }
         if (phba->cfg_nvmet_mrq > 1) {
             rc = lpfc_mrq_create(phba,
                          phba->sli4_hba.nvmet_mrq_hdr,
                          phba->sli4_hba.nvmet_mrq_data,
                          phba->sli4_hba.nvmet_cqset,
                          LPFC_NVMET);
             if (rc) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "6098 Failed setup of NVMET "
                         "MRQ: rc = 0x%x\n",
                         (uint32_t)rc);
                 goto out_destroy;
             }
 
         } else {
             rc = lpfc_rq_create(phba,
                         phba->sli4_hba.nvmet_mrq_hdr[0],
                         phba->sli4_hba.nvmet_mrq_data[0],
                         phba->sli4_hba.nvmet_cqset[0],
                         LPFC_NVMET);
             if (rc) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "6057 Failed setup of NVMET "
                         "Receive Queue: rc = 0x%x\n",
                         (uint32_t)rc);
                 goto out_destroy;
             }
 
             lpfc_printf_log(
                 phba, KERN_INFO, LOG_INIT,
                 "6099 NVMET RQ setup: hdr-rq-id=%d, "
                 "dat-rq-id=%d parent cq-id=%d\n",
                 phba->sli4_hba.nvmet_mrq_hdr[0]->queue_id,
                 phba->sli4_hba.nvmet_mrq_data[0]->queue_id,
                 phba->sli4_hba.nvmet_cqset[0]->queue_id);
 
         }
     }
 
     if (!phba->sli4_hba.hdr_rq || !phba->sli4_hba.dat_rq) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0540 Receive Queue not allocated\n");
         rc = -ENOMEM;
         goto out_destroy;
     }
 
     rc = lpfc_rq_create(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
                 phba->sli4_hba.els_cq, LPFC_USOL);
     if (rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0541 Failed setup of Receive Queue: "
                 "rc = 0x%x\n", (uint32_t)rc);
         goto out_destroy;
     }
 
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "2592 USL RQ setup: hdr-rq-id=%d, dat-rq-id=%d "
             "parent cq-id=%d\n",
             phba->sli4_hba.hdr_rq->queue_id,
             phba->sli4_hba.dat_rq->queue_id,
             phba->sli4_hba.els_cq->queue_id);
 
     if (phba->cfg_fcp_imax)
         usdelay = LPFC_SEC_TO_USEC / phba->cfg_fcp_imax;
     else
         usdelay = 0;
 
     for (qidx = 0; qidx < phba->cfg_irq_chann;
          qidx += LPFC_MAX_EQ_DELAY_EQID_CNT)
         lpfc_modify_hba_eq_delay(phba, qidx, LPFC_MAX_EQ_DELAY_EQID_CNT,
                      usdelay);
 
     if (phba->sli4_hba.cq_max) {
         kfree(phba->sli4_hba.cq_lookup);
         phba->sli4_hba.cq_lookup = kcalloc((phba->sli4_hba.cq_max + 1),
             sizeof(struct lpfc_queue *), GFP_KERNEL);
         if (!phba->sli4_hba.cq_lookup) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0549 Failed setup of CQ Lookup table: "
                     "size 0x%x\n", phba->sli4_hba.cq_max);
             rc = -ENOMEM;
             goto out_destroy;
         }
         lpfc_setup_cq_lookup(phba);
     }
     return 0;
 
 out_destroy:
     lpfc_sli4_queue_unset(phba);
 out_error:
     return rc;
 }
 
 /**
  * lpfc_sli4_queue_unset - Unset all the SLI4 queues
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to unset all the SLI4 queues with the FCoE HBA
  * operation.
  *
  * Return codes
  *      0 - successful
  *      -ENOMEM - No available memory
  *      -EIO - The mailbox failed to complete successfully.
  **/
 void
 lpfc_sli4_queue_unset(struct lpfc_hba *phba)
 {
     struct lpfc_sli4_hdw_queue *qp;
     struct lpfc_queue *eq;
     int qidx;
 
     /* Unset mailbox command work queue */
     if (phba->sli4_hba.mbx_wq)
         lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
 
     /* Unset NVME LS work queue */
     if (phba->sli4_hba.nvmels_wq)
         lpfc_wq_destroy(phba, phba->sli4_hba.nvmels_wq);
 
     /* Unset ELS work queue */
     if (phba->sli4_hba.els_wq)
         lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
 
     /* Unset unsolicited receive queue */
     if (phba->sli4_hba.hdr_rq)
         lpfc_rq_destroy(phba, phba->sli4_hba.hdr_rq,
                 phba->sli4_hba.dat_rq);
 
     /* Unset mailbox command complete queue */
     if (phba->sli4_hba.mbx_cq)
         lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
 
     /* Unset ELS complete queue */
     if (phba->sli4_hba.els_cq)
         lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
 
     /* Unset NVME LS complete queue */
     if (phba->sli4_hba.nvmels_cq)
         lpfc_cq_destroy(phba, phba->sli4_hba.nvmels_cq);
 
     if (phba->nvmet_support) {
         /* Unset NVMET MRQ queue */
         if (phba->sli4_hba.nvmet_mrq_hdr) {
             for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++)
                 lpfc_rq_destroy(
                     phba,
                     phba->sli4_hba.nvmet_mrq_hdr[qidx],
                     phba->sli4_hba.nvmet_mrq_data[qidx]);
         }
 
         /* Unset NVMET CQ Set complete queue */
         if (phba->sli4_hba.nvmet_cqset) {
             for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++)
                 lpfc_cq_destroy(
                     phba, phba->sli4_hba.nvmet_cqset[qidx]);
         }
     }
 
     /* Unset fast-path SLI4 queues */
     if (phba->sli4_hba.hdwq) {
         /* Loop thru all Hardware Queues */
         for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
             /* Destroy the CQ/WQ corresponding to Hardware Queue */
             qp = &phba->sli4_hba.hdwq[qidx];
             lpfc_wq_destroy(phba, qp->io_wq);
             lpfc_cq_destroy(phba, qp->io_cq);
         }
         /* Loop thru all IRQ vectors */
         for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
             /* Destroy the EQ corresponding to the IRQ vector */
             eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
             lpfc_eq_destroy(phba, eq);
         }
     }
 
     kfree(phba->sli4_hba.cq_lookup);
     phba->sli4_hba.cq_lookup = NULL;
     phba->sli4_hba.cq_max = 0;
 }
 
 /**
  * lpfc_sli4_cq_event_pool_create - Create completion-queue event free pool
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to allocate and set up a pool of completion queue
  * events. The body of the completion queue event is a completion queue entry
  * CQE. For now, this pool is used for the interrupt service routine to queue
  * the following HBA completion queue events for the worker thread to process:
  *   - Mailbox asynchronous events
  *   - Receive queue completion unsolicited events
  * Later, this can be used for all the slow-path events.
  *
  * Return codes
  *      0 - successful
  *      -ENOMEM - No available memory
  **/
 static int
 lpfc_sli4_cq_event_pool_create(struct lpfc_hba *phba)
 {
     struct lpfc_cq_event *cq_event;
     int i;
 
     for (i = 0; i < (4 * phba->sli4_hba.cq_ecount); i++) {
         cq_event = kmalloc(sizeof(struct lpfc_cq_event), GFP_KERNEL);
         if (!cq_event)
             goto out_pool_create_fail;
         list_add_tail(&cq_event->list,
                   &phba->sli4_hba.sp_cqe_event_pool);
     }
     return 0;
 
 out_pool_create_fail:
     lpfc_sli4_cq_event_pool_destroy(phba);
     return -ENOMEM;
 }
 
 /**
  * lpfc_sli4_cq_event_pool_destroy - Free completion-queue event free pool
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to free the pool of completion queue events at
  * driver unload time. Note that, it is the responsibility of the driver
  * cleanup routine to free all the outstanding completion-queue events
  * allocated from this pool back into the pool before invoking this routine
  * to destroy the pool.
  **/
 static void
 lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *phba)
 {
     struct lpfc_cq_event *cq_event, *next_cq_event;
 
     list_for_each_entry_safe(cq_event, next_cq_event,
                  &phba->sli4_hba.sp_cqe_event_pool, list) {
         list_del(&cq_event->list);
         kfree(cq_event);
     }
 }
 
 /**
  * __lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is the lock free version of the API invoked to allocate a
  * completion-queue event from the free pool.
  *
  * Return: Pointer to the newly allocated completion-queue event if successful
  *         NULL otherwise.
  **/
 struct lpfc_cq_event *
 __lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
 {
     struct lpfc_cq_event *cq_event = NULL;
 
     list_remove_head(&phba->sli4_hba.sp_cqe_event_pool, cq_event,
              struct lpfc_cq_event, list);
     return cq_event;
 }
 
 /**
  * lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is the lock version of the API invoked to allocate a
  * completion-queue event from the free pool.
  *
  * Return: Pointer to the newly allocated completion-queue event if successful
  *         NULL otherwise.
  **/
 struct lpfc_cq_event *
 lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
 {
     struct lpfc_cq_event *cq_event;
     unsigned long iflags;
 
     spin_lock_irqsave(&phba->hbalock, iflags);
     cq_event = __lpfc_sli4_cq_event_alloc(phba);
     spin_unlock_irqrestore(&phba->hbalock, iflags);
     return cq_event;
 }
 
 /**
  * __lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
  * @phba: pointer to lpfc hba data structure.
  * @cq_event: pointer to the completion queue event to be freed.
  *
  * This routine is the lock free version of the API invoked to release a
  * completion-queue event back into the free pool.
  **/
 void
 __lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
                  struct lpfc_cq_event *cq_event)
 {
     list_add_tail(&cq_event->list, &phba->sli4_hba.sp_cqe_event_pool);
 }
 
 /**
  * lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
  * @phba: pointer to lpfc hba data structure.
  * @cq_event: pointer to the completion queue event to be freed.
  *
  * This routine is the lock version of the API invoked to release a
  * completion-queue event back into the free pool.
  **/
 void
 lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
                struct lpfc_cq_event *cq_event)
 {
     unsigned long iflags;
     spin_lock_irqsave(&phba->hbalock, iflags);
     __lpfc_sli4_cq_event_release(phba, cq_event);
     spin_unlock_irqrestore(&phba->hbalock, iflags);
 }
 
 /**
  * lpfc_sli4_cq_event_release_all - Release all cq events to the free pool
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is to free all the pending completion-queue events to the
  * back into the free pool for device reset.
  **/
 static void
 lpfc_sli4_cq_event_release_all(struct lpfc_hba *phba)
 {
     LIST_HEAD(cq_event_list);
     struct lpfc_cq_event *cq_event;
     unsigned long iflags;
 
     /* Retrieve all the pending WCQEs from pending WCQE lists */
 
     /* Pending ELS XRI abort events */
     spin_lock_irqsave(&phba->sli4_hba.els_xri_abrt_list_lock, iflags);
     list_splice_init(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
              &cq_event_list);
     spin_unlock_irqrestore(&phba->sli4_hba.els_xri_abrt_list_lock, iflags);
 
     /* Pending asynnc events */
     spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
     list_splice_init(&phba->sli4_hba.sp_asynce_work_queue,
              &cq_event_list);
     spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock, iflags);
 
     while (!list_empty(&cq_event_list)) {
         list_remove_head(&cq_event_list, cq_event,
                  struct lpfc_cq_event, list);
         lpfc_sli4_cq_event_release(phba, cq_event);
     }
 }
 
 /**
  * lpfc_pci_function_reset - Reset pci function.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to request a PCI function reset. It will destroys
  * all resources assigned to the PCI function which originates this request.
  *
  * Return codes
  *      0 - successful
  *      -ENOMEM - No available memory
  *      -EIO - The mailbox failed to complete successfully.
  **/
 int
 lpfc_pci_function_reset(struct lpfc_hba *phba)
 {
     LPFC_MBOXQ_t *mboxq;
     uint32_t rc = 0, if_type;
     uint32_t shdr_status, shdr_add_status;
     uint32_t rdy_chk;
     uint32_t port_reset = 0;
     union lpfc_sli4_cfg_shdr *shdr;
     struct lpfc_register reg_data;
     uint16_t devid;
 
     if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
     switch (if_type) {
     case LPFC_SLI_INTF_IF_TYPE_0:
         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
                                GFP_KERNEL);
         if (!mboxq) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0494 Unable to allocate memory for "
                     "issuing SLI_FUNCTION_RESET mailbox "
                     "command\n");
             return -ENOMEM;
         }
 
         /* Setup PCI function reset mailbox-ioctl command */
         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
                  LPFC_MBOX_OPCODE_FUNCTION_RESET, 0,
                  LPFC_SLI4_MBX_EMBED);
         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
         shdr = (union lpfc_sli4_cfg_shdr *)
             &mboxq->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);
         mempool_free(mboxq, phba->mbox_mem_pool);
         if (shdr_status || shdr_add_status || rc) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0495 SLI_FUNCTION_RESET mailbox "
                     "failed with status x%x add_status x%x,"
                     " mbx status x%x\n",
                     shdr_status, shdr_add_status, rc);
             rc = -ENXIO;
         }
         break;
     case LPFC_SLI_INTF_IF_TYPE_2:
     case LPFC_SLI_INTF_IF_TYPE_6:
 wait:
         /*
          * Poll the Port Status Register and wait for RDY for
          * up to 30 seconds. If the port doesn't respond, treat
          * it as an error.
          */
         for (rdy_chk = 0; rdy_chk < 1500; rdy_chk++) {
             if (lpfc_readl(phba->sli4_hba.u.if_type2.
                 STATUSregaddr, &reg_data.word0)) {
                 rc = -ENODEV;
                 goto out;
             }
             if (bf_get(lpfc_sliport_status_rdy, &reg_data))
                 break;
             msleep(20);
         }
 
         if (!bf_get(lpfc_sliport_status_rdy, &reg_data)) {
             phba->work_status[0] = readl(
                 phba->sli4_hba.u.if_type2.ERR1regaddr);
             phba->work_status[1] = readl(
                 phba->sli4_hba.u.if_type2.ERR2regaddr);
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "2890 Port not ready, port status reg "
                     "0x%x error 1=0x%x, error 2=0x%x\n",
                     reg_data.word0,
                     phba->work_status[0],
                     phba->work_status[1]);
             rc = -ENODEV;
             goto out;
         }
 
         if (bf_get(lpfc_sliport_status_pldv, &reg_data))
             lpfc_pldv_detect = true;
 
         if (!port_reset) {
             /*
              * Reset the port now
              */
             reg_data.word0 = 0;
             bf_set(lpfc_sliport_ctrl_end, &reg_data,
                    LPFC_SLIPORT_LITTLE_ENDIAN);
             bf_set(lpfc_sliport_ctrl_ip, &reg_data,
                    LPFC_SLIPORT_INIT_PORT);
             writel(reg_data.word0, phba->sli4_hba.u.if_type2.
                    CTRLregaddr);
             /* flush */
             pci_read_config_word(phba->pcidev,
                          PCI_DEVICE_ID, &devid);
 
             port_reset = 1;
             msleep(20);
             goto wait;
         } else if (bf_get(lpfc_sliport_status_rn, &reg_data)) {
             rc = -ENODEV;
             goto out;
         }
         break;
 
     case LPFC_SLI_INTF_IF_TYPE_1:
     default:
         break;
     }
 
 out:
     /* Catch the not-ready port failure after a port reset. */
     if (rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3317 HBA not functional: IP Reset Failed "
                 "try: echo fw_reset > board_mode\n");
         rc = -ENODEV;
     }
 
     return rc;
 }
 
 /**
  * lpfc_sli4_pci_mem_setup - Setup SLI4 HBA PCI memory space.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to set up the PCI device memory space for device
  * with SLI-4 interface spec.
  *
  * Return codes
  *  0 - successful
  *  other values - error
  **/
 static int
 lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
 {
     struct pci_dev *pdev = phba->pcidev;
     unsigned long bar0map_len, bar1map_len, bar2map_len;
     int error;
     uint32_t if_type;
 
     if (!pdev)
         return -ENODEV;
 
     /* Set the device DMA mask size */
     error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
     if (error)
         error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
     if (error)
         return error;
 
     /*
      * The BARs and register set definitions and offset locations are
      * dependent on the if_type.
      */
     if (pci_read_config_dword(pdev, LPFC_SLI_INTF,
                   &phba->sli4_hba.sli_intf.word0)) {
         return -ENODEV;
     }
 
     /* There is no SLI3 failback for SLI4 devices. */
     if (bf_get(lpfc_sli_intf_valid, &phba->sli4_hba.sli_intf) !=
         LPFC_SLI_INTF_VALID) {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "2894 SLI_INTF reg contents invalid "
                 "sli_intf reg 0x%x\n",
                 phba->sli4_hba.sli_intf.word0);
         return -ENODEV;
     }
 
     if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
     /*
      * Get the bus address of SLI4 device Bar regions and the
      * number of bytes required by each mapping. The mapping of the
      * particular PCI BARs regions is dependent on the type of
      * SLI4 device.
      */
     if (pci_resource_start(pdev, PCI_64BIT_BAR0)) {
         phba->pci_bar0_map = pci_resource_start(pdev, PCI_64BIT_BAR0);
         bar0map_len = pci_resource_len(pdev, PCI_64BIT_BAR0);
 
         /*
          * Map SLI4 PCI Config Space Register base to a kernel virtual
          * addr
          */
         phba->sli4_hba.conf_regs_memmap_p =
             ioremap(phba->pci_bar0_map, bar0map_len);
         if (!phba->sli4_hba.conf_regs_memmap_p) {
             dev_printk(KERN_ERR, &pdev->dev,
                    "ioremap failed for SLI4 PCI config "
                    "registers.\n");
             return -ENODEV;
         }
         phba->pci_bar0_memmap_p = phba->sli4_hba.conf_regs_memmap_p;
         /* Set up BAR0 PCI config space register memory map */
         lpfc_sli4_bar0_register_memmap(phba, if_type);
     } else {
         phba->pci_bar0_map = pci_resource_start(pdev, 1);
         bar0map_len = pci_resource_len(pdev, 1);
         if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
             dev_printk(KERN_ERR, &pdev->dev,
                "FATAL - No BAR0 mapping for SLI4, if_type 2\n");
             return -ENODEV;
         }
         phba->sli4_hba.conf_regs_memmap_p =
                 ioremap(phba->pci_bar0_map, bar0map_len);
         if (!phba->sli4_hba.conf_regs_memmap_p) {
             dev_printk(KERN_ERR, &pdev->dev,
                 "ioremap failed for SLI4 PCI config "
                 "registers.\n");
             return -ENODEV;
         }
         lpfc_sli4_bar0_register_memmap(phba, if_type);
     }
 
     if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
         if (pci_resource_start(pdev, PCI_64BIT_BAR2)) {
             /*
              * Map SLI4 if type 0 HBA Control Register base to a
              * kernel virtual address and setup the registers.
              */
             phba->pci_bar1_map = pci_resource_start(pdev,
                                 PCI_64BIT_BAR2);
             bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
             phba->sli4_hba.ctrl_regs_memmap_p =
                     ioremap(phba->pci_bar1_map,
                         bar1map_len);
             if (!phba->sli4_hba.ctrl_regs_memmap_p) {
                 dev_err(&pdev->dev,
                        "ioremap failed for SLI4 HBA "
                         "control registers.\n");
                 error = -ENOMEM;
                 goto out_iounmap_conf;
             }
             phba->pci_bar2_memmap_p =
                      phba->sli4_hba.ctrl_regs_memmap_p;
             lpfc_sli4_bar1_register_memmap(phba, if_type);
         } else {
             error = -ENOMEM;
             goto out_iounmap_conf;
         }
     }
 
     if ((if_type == LPFC_SLI_INTF_IF_TYPE_6) &&
         (pci_resource_start(pdev, PCI_64BIT_BAR2))) {
         /*
          * Map SLI4 if type 6 HBA Doorbell Register base to a kernel
          * virtual address and setup the registers.
          */
         phba->pci_bar1_map = pci_resource_start(pdev, PCI_64BIT_BAR2);
         bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
         phba->sli4_hba.drbl_regs_memmap_p =
                 ioremap(phba->pci_bar1_map, bar1map_len);
         if (!phba->sli4_hba.drbl_regs_memmap_p) {
             dev_err(&pdev->dev,
                "ioremap failed for SLI4 HBA doorbell registers.\n");
             error = -ENOMEM;
             goto out_iounmap_conf;
         }
         phba->pci_bar2_memmap_p = phba->sli4_hba.drbl_regs_memmap_p;
         lpfc_sli4_bar1_register_memmap(phba, if_type);
     }
 
     if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
         if (pci_resource_start(pdev, PCI_64BIT_BAR4)) {
             /*
              * Map SLI4 if type 0 HBA Doorbell Register base to
              * a kernel virtual address and setup the registers.
              */
             phba->pci_bar2_map = pci_resource_start(pdev,
                                 PCI_64BIT_BAR4);
             bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);
             phba->sli4_hba.drbl_regs_memmap_p =
                     ioremap(phba->pci_bar2_map,
                         bar2map_len);
             if (!phba->sli4_hba.drbl_regs_memmap_p) {
                 dev_err(&pdev->dev,
                        "ioremap failed for SLI4 HBA"
                        " doorbell registers.\n");
                 error = -ENOMEM;
                 goto out_iounmap_ctrl;
             }
             phba->pci_bar4_memmap_p =
                     phba->sli4_hba.drbl_regs_memmap_p;
             error = lpfc_sli4_bar2_register_memmap(phba, LPFC_VF0);
             if (error)
                 goto out_iounmap_all;
         } else {
             error = -ENOMEM;
             goto out_iounmap_all;
         }
     }
 
     if (if_type == LPFC_SLI_INTF_IF_TYPE_6 &&
         pci_resource_start(pdev, PCI_64BIT_BAR4)) {
         /*
          * Map SLI4 if type 6 HBA DPP Register base to a kernel
          * virtual address and setup the registers.
          */
         phba->pci_bar2_map = pci_resource_start(pdev, PCI_64BIT_BAR4);
         bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);
         phba->sli4_hba.dpp_regs_memmap_p =
                 ioremap(phba->pci_bar2_map, bar2map_len);
         if (!phba->sli4_hba.dpp_regs_memmap_p) {
             dev_err(&pdev->dev,
                "ioremap failed for SLI4 HBA dpp registers.\n");
             error = -ENOMEM;
             goto out_iounmap_ctrl;
         }
         phba->pci_bar4_memmap_p = phba->sli4_hba.dpp_regs_memmap_p;
     }
 
     /* Set up the EQ/CQ register handeling functions now */
     switch (if_type) {
     case LPFC_SLI_INTF_IF_TYPE_0:
     case LPFC_SLI_INTF_IF_TYPE_2:
         phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_eq_clr_intr;
         phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_write_eq_db;
         phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_write_cq_db;
         break;
     case LPFC_SLI_INTF_IF_TYPE_6:
         phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_if6_eq_clr_intr;
         phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_if6_write_eq_db;
         phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_if6_write_cq_db;
         break;
     default:
         break;
     }
 
     return 0;
 
 out_iounmap_all:
     iounmap(phba->sli4_hba.drbl_regs_memmap_p);
 out_iounmap_ctrl:
     iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
 out_iounmap_conf:
     iounmap(phba->sli4_hba.conf_regs_memmap_p);
 
     return error;
 }
 
 /**
  * lpfc_sli4_pci_mem_unset - Unset SLI4 HBA PCI memory space.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to unset the PCI device memory space for device
  * with SLI-4 interface spec.
  **/
 static void
 lpfc_sli4_pci_mem_unset(struct lpfc_hba *phba)
 {
     uint32_t if_type;
     if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
 
     switch (if_type) {
     case LPFC_SLI_INTF_IF_TYPE_0:
         iounmap(phba->sli4_hba.drbl_regs_memmap_p);
         iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
         iounmap(phba->sli4_hba.conf_regs_memmap_p);
         break;
     case LPFC_SLI_INTF_IF_TYPE_2:
         iounmap(phba->sli4_hba.conf_regs_memmap_p);
         break;
     case LPFC_SLI_INTF_IF_TYPE_6:
         iounmap(phba->sli4_hba.drbl_regs_memmap_p);
         iounmap(phba->sli4_hba.conf_regs_memmap_p);
         if (phba->sli4_hba.dpp_regs_memmap_p)
             iounmap(phba->sli4_hba.dpp_regs_memmap_p);
         break;
     case LPFC_SLI_INTF_IF_TYPE_1:
     default:
         dev_printk(KERN_ERR, &phba->pcidev->dev,
                "FATAL - unsupported SLI4 interface type - %d\n",
                if_type);
         break;
     }
 }
 
 /**
  * lpfc_sli_enable_msix - Enable MSI-X interrupt mode on SLI-3 device
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to enable the MSI-X interrupt vectors to device
  * with SLI-3 interface specs.
  *
  * Return codes
  *   0 - successful
  *   other values - error
  **/
 static int
 lpfc_sli_enable_msix(struct lpfc_hba *phba)
 {
     int rc;
     LPFC_MBOXQ_t *pmb;
 
     /* Set up MSI-X multi-message vectors */
     rc = pci_alloc_irq_vectors(phba->pcidev,
             LPFC_MSIX_VECTORS, LPFC_MSIX_VECTORS, PCI_IRQ_MSIX);
     if (rc < 0) {
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "0420 PCI enable MSI-X failed (%d)\n", rc);
         goto vec_fail_out;
     }
 
     /*
      * Assign MSI-X vectors to interrupt handlers
      */
 
     /* vector-0 is associated to slow-path handler */
     rc = request_irq(pci_irq_vector(phba->pcidev, 0),
              &lpfc_sli_sp_intr_handler, 0,
              LPFC_SP_DRIVER_HANDLER_NAME, phba);
     if (rc) {
         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                 "0421 MSI-X slow-path request_irq failed "
                 "(%d)\n", rc);
         goto msi_fail_out;
     }
 
     /* vector-1 is associated to fast-path handler */
     rc = request_irq(pci_irq_vector(phba->pcidev, 1),
              &lpfc_sli_fp_intr_handler, 0,
              LPFC_FP_DRIVER_HANDLER_NAME, phba);
 
     if (rc) {
         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                 "0429 MSI-X fast-path request_irq failed "
                 "(%d)\n", rc);
         goto irq_fail_out;
     }
 
     /*
      * Configure HBA MSI-X attention conditions to messages
      */
     pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 
     if (!pmb) {
         rc = -ENOMEM;
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0474 Unable to allocate memory for issuing "
                 "MBOX_CONFIG_MSI command\n");
         goto mem_fail_out;
     }
     rc = lpfc_config_msi(phba, pmb);
     if (rc)
         goto mbx_fail_out;
     rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
     if (rc != MBX_SUCCESS) {
         lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
                 "0351 Config MSI mailbox command failed, "
                 "mbxCmd x%x, mbxStatus x%x\n",
                 pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus);
         goto mbx_fail_out;
     }
 
     /* Free memory allocated for mailbox command */
     mempool_free(pmb, phba->mbox_mem_pool);
     return rc;
 
 mbx_fail_out:
     /* Free memory allocated for mailbox command */
     mempool_free(pmb, phba->mbox_mem_pool);
 
 mem_fail_out:
     /* free the irq already requested */
     free_irq(pci_irq_vector(phba->pcidev, 1), phba);
 
 irq_fail_out:
     /* free the irq already requested */
     free_irq(pci_irq_vector(phba->pcidev, 0), phba);
 
 msi_fail_out:
     /* Unconfigure MSI-X capability structure */
     pci_free_irq_vectors(phba->pcidev);
 
 vec_fail_out:
     return rc;
 }
 
 /**
  * lpfc_sli_enable_msi - Enable MSI interrupt mode on SLI-3 device.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to enable the MSI interrupt mode to device with
  * SLI-3 interface spec. The kernel function pci_enable_msi() is called to
  * enable the MSI vector. The device driver is responsible for calling the
  * request_irq() to register MSI vector with a interrupt the handler, which
  * is done in this function.
  *
  * Return codes
  *  0 - successful
  *  other values - error
  */
 static int
 lpfc_sli_enable_msi(struct lpfc_hba *phba)
 {
     int rc;
 
     rc = pci_enable_msi(phba->pcidev);
     if (!rc)
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "0012 PCI enable MSI mode success.\n");
     else {
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "0471 PCI enable MSI mode failed (%d)\n", rc);
         return rc;
     }
 
     rc = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
              0, LPFC_DRIVER_NAME, phba);
     if (rc) {
         pci_disable_msi(phba->pcidev);
         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                 "0478 MSI request_irq failed (%d)\n", rc);
     }
     return rc;
 }
 
 /**
  * lpfc_sli_enable_intr - Enable device interrupt to SLI-3 device.
  * @phba: pointer to lpfc hba data structure.
  * @cfg_mode: Interrupt configuration mode (INTx, MSI or MSI-X).
  *
  * This routine is invoked to enable device interrupt and associate driver's
  * interrupt handler(s) to interrupt vector(s) to device with SLI-3 interface
  * spec. Depends on the interrupt mode configured to the driver, the driver
  * will try to fallback from the configured interrupt mode to an interrupt
  * mode which is supported by the platform, kernel, and device in the order
  * of:
  * MSI-X -> MSI -> IRQ.
  *
  * Return codes
  *   0 - successful
  *   other values - error
  **/
 static uint32_t
 lpfc_sli_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
 {
     uint32_t intr_mode = LPFC_INTR_ERROR;
     int retval;
 
     /* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
     retval = lpfc_sli_config_port(phba, LPFC_SLI_REV3);
     if (retval)
         return intr_mode;
     phba->hba_flag &= ~HBA_NEEDS_CFG_PORT;
 
     if (cfg_mode == 2) {
         /* Now, try to enable MSI-X interrupt mode */
         retval = lpfc_sli_enable_msix(phba);
         if (!retval) {
             /* Indicate initialization to MSI-X mode */
             phba->intr_type = MSIX;
             intr_mode = 2;
         }
     }
 
     /* Fallback to MSI if MSI-X initialization failed */
     if (cfg_mode >= 1 && phba->intr_type == NONE) {
         retval = lpfc_sli_enable_msi(phba);
         if (!retval) {
             /* Indicate initialization to MSI mode */
             phba->intr_type = MSI;
             intr_mode = 1;
         }
     }
 
     /* Fallback to INTx if both MSI-X/MSI initalization failed */
     if (phba->intr_type == NONE) {
         retval = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
         if (!retval) {
             /* Indicate initialization to INTx mode */
             phba->intr_type = INTx;
             intr_mode = 0;
         }
     }
     return intr_mode;
 }
 
 /**
  * lpfc_sli_disable_intr - Disable device interrupt to SLI-3 device.
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to disable device interrupt and disassociate the
  * driver's interrupt handler(s) from interrupt vector(s) to device with
  * SLI-3 interface spec. Depending on the interrupt mode, the driver will
  * release the interrupt vector(s) for the message signaled interrupt.
  **/
 static void
 lpfc_sli_disable_intr(struct lpfc_hba *phba)
 {
     int nr_irqs, i;
 
     if (phba->intr_type == MSIX)
         nr_irqs = LPFC_MSIX_VECTORS;
     else
         nr_irqs = 1;
 
     for (i = 0; i < nr_irqs; i++)
         free_irq(pci_irq_vector(phba->pcidev, i), phba);
     pci_free_irq_vectors(phba->pcidev);
 
     /* Reset interrupt management states */
     phba->intr_type = NONE;
     phba->sli.slistat.sli_intr = 0;
 }
 
 /**
  * lpfc_find_cpu_handle - Find the CPU that corresponds to the specified Queue
  * @phba: pointer to lpfc hba data structure.
  * @id: EQ vector index or Hardware Queue index
  * @match: LPFC_FIND_BY_EQ = match by EQ
  *         LPFC_FIND_BY_HDWQ = match by Hardware Queue
  * Return the CPU that matches the selection criteria
  */
 static uint16_t
 lpfc_find_cpu_handle(struct lpfc_hba *phba, uint16_t id, int match)
 {
     struct lpfc_vector_map_info *cpup;
     int cpu;
 
     /* Loop through all CPUs */
     for_each_present_cpu(cpu) {
         cpup = &phba->sli4_hba.cpu_map[cpu];
 
         /* If we are matching by EQ, there may be multiple CPUs using
          * using the same vector, so select the one with
          * LPFC_CPU_FIRST_IRQ set.
          */
         if ((match == LPFC_FIND_BY_EQ) &&
             (cpup->flag & LPFC_CPU_FIRST_IRQ) &&
             (cpup->eq == id))
             return cpu;
 
         /* If matching by HDWQ, select the first CPU that matches */
         if ((match == LPFC_FIND_BY_HDWQ) && (cpup->hdwq == id))
             return cpu;
     }
     return 0;
 }
 
 #ifdef CONFIG_X86
 /**
  * lpfc_find_hyper - Determine if the CPU map entry is hyper-threaded
  * @phba: pointer to lpfc hba data structure.
  * @cpu: CPU map index
  * @phys_id: CPU package physical id
  * @core_id: CPU core id
  */
 static int
 lpfc_find_hyper(struct lpfc_hba *phba, int cpu,
         uint16_t phys_id, uint16_t core_id)
 {
     struct lpfc_vector_map_info *cpup;
     int idx;
 
     for_each_present_cpu(idx) {
         cpup = &phba->sli4_hba.cpu_map[idx];
         /* Does the cpup match the one we are looking for */
         if ((cpup->phys_id == phys_id) &&
             (cpup->core_id == core_id) &&
             (cpu != idx))
             return 1;
     }
     return 0;
 }
 #endif
 
 /*
  * lpfc_assign_eq_map_info - Assigns eq for vector_map structure
  * @phba: pointer to lpfc hba data structure.
  * @eqidx: index for eq and irq vector
  * @flag: flags to set for vector_map structure
  * @cpu: cpu used to index vector_map structure
  *
  * The routine assigns eq info into vector_map structure
  */
 static inline void
 lpfc_assign_eq_map_info(struct lpfc_hba *phba, uint16_t eqidx, uint16_t flag,
             unsigned int cpu)
 {
     struct lpfc_vector_map_info *cpup = &phba->sli4_hba.cpu_map[cpu];
     struct lpfc_hba_eq_hdl *eqhdl = lpfc_get_eq_hdl(eqidx);
 
     cpup->eq = eqidx;
     cpup->flag |= flag;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "3336 Set Affinity: CPU %d irq %d eq %d flag x%x\n",
             cpu, eqhdl->irq, cpup->eq, cpup->flag);
 }
 
 /**
  * lpfc_cpu_map_array_init - Initialize cpu_map structure
  * @phba: pointer to lpfc hba data structure.
  *
  * The routine initializes the cpu_map array structure
  */
 static void
 lpfc_cpu_map_array_init(struct lpfc_hba *phba)
 {
     struct lpfc_vector_map_info *cpup;
     struct lpfc_eq_intr_info *eqi;
     int cpu;
 
     for_each_possible_cpu(cpu) {
         cpup = &phba->sli4_hba.cpu_map[cpu];
         cpup->phys_id = LPFC_VECTOR_MAP_EMPTY;
         cpup->core_id = LPFC_VECTOR_MAP_EMPTY;
         cpup->hdwq = LPFC_VECTOR_MAP_EMPTY;
         cpup->eq = LPFC_VECTOR_MAP_EMPTY;
         cpup->flag = 0;
         eqi = per_cpu_ptr(phba->sli4_hba.eq_info, cpu);
         INIT_LIST_HEAD(&eqi->list);
         eqi->icnt = 0;
     }
 }
 
 /**
  * lpfc_hba_eq_hdl_array_init - Initialize hba_eq_hdl structure
  * @phba: pointer to lpfc hba data structure.
  *
  * The routine initializes the hba_eq_hdl array structure
  */
 static void
 lpfc_hba_eq_hdl_array_init(struct lpfc_hba *phba)
 {
     struct lpfc_hba_eq_hdl *eqhdl;
     int i;
 
     for (i = 0; i < phba->cfg_irq_chann; i++) {
         eqhdl = lpfc_get_eq_hdl(i);
         eqhdl->irq = LPFC_VECTOR_MAP_EMPTY;
         eqhdl->phba = phba;
     }
 }
 
 /**
  * lpfc_cpu_affinity_check - Check vector CPU affinity mappings
  * @phba: pointer to lpfc hba data structure.
  * @vectors: number of msix vectors allocated.
  *
  * The routine will figure out the CPU affinity assignment for every
  * MSI-X vector allocated for the HBA.
  * In addition, the CPU to IO channel mapping will be calculated
  * and the phba->sli4_hba.cpu_map array will reflect this.
  */
 static void
 lpfc_cpu_affinity_check(struct lpfc_hba *phba, int vectors)
 {
     int i, cpu, idx, next_idx, new_cpu, start_cpu, first_cpu;
     int max_phys_id, min_phys_id;
     int max_core_id, min_core_id;
     struct lpfc_vector_map_info *cpup;
     struct lpfc_vector_map_info *new_cpup;
 #ifdef CONFIG_X86
     struct cpuinfo_x86 *cpuinfo;
 #endif
 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
     struct lpfc_hdwq_stat *c_stat;
 #endif
 
     max_phys_id = 0;
     min_phys_id = LPFC_VECTOR_MAP_EMPTY;
     max_core_id = 0;
     min_core_id = LPFC_VECTOR_MAP_EMPTY;
 
     /* Update CPU map with physical id and core id of each CPU */
     for_each_present_cpu(cpu) {
         cpup = &phba->sli4_hba.cpu_map[cpu];
 #ifdef CONFIG_X86
         cpuinfo = &cpu_data(cpu);
         cpup->phys_id = cpuinfo->phys_proc_id;
         cpup->core_id = cpuinfo->cpu_core_id;
         if (lpfc_find_hyper(phba, cpu, cpup->phys_id, cpup->core_id))
             cpup->flag |= LPFC_CPU_MAP_HYPER;
 #else
         /* No distinction between CPUs for other platforms */
         cpup->phys_id = 0;
         cpup->core_id = cpu;
 #endif
 
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "3328 CPU %d physid %d coreid %d flag x%x\n",
                 cpu, cpup->phys_id, cpup->core_id, cpup->flag);
 
         if (cpup->phys_id > max_phys_id)
             max_phys_id = cpup->phys_id;
         if (cpup->phys_id < min_phys_id)
             min_phys_id = cpup->phys_id;
 
         if (cpup->core_id > max_core_id)
             max_core_id = cpup->core_id;
         if (cpup->core_id < min_core_id)
             min_core_id = cpup->core_id;
     }
 
     /* After looking at each irq vector assigned to this pcidev, its
      * possible to see that not ALL CPUs have been accounted for.
      * Next we will set any unassigned (unaffinitized) cpu map
      * entries to a IRQ on the same phys_id.
      */
     first_cpu = cpumask_first(cpu_present_mask);
     start_cpu = first_cpu;
 
     for_each_present_cpu(cpu) {
         cpup = &phba->sli4_hba.cpu_map[cpu];
 
         /* Is this CPU entry unassigned */
         if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {
             /* Mark CPU as IRQ not assigned by the kernel */
             cpup->flag |= LPFC_CPU_MAP_UNASSIGN;
 
             /* If so, find a new_cpup thats on the the SAME
              * phys_id as cpup. start_cpu will start where we
              * left off so all unassigned entries don't get assgined
              * the IRQ of the first entry.
              */
             new_cpu = start_cpu;
             for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
                 new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
                 if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&
                     (new_cpup->eq != LPFC_VECTOR_MAP_EMPTY) &&
                     (new_cpup->phys_id == cpup->phys_id))
                     goto found_same;
                 new_cpu = cpumask_next(
                     new_cpu, cpu_present_mask);
                 if (new_cpu == nr_cpumask_bits)
                     new_cpu = first_cpu;
             }
             /* At this point, we leave the CPU as unassigned */
             continue;
 found_same:
             /* We found a matching phys_id, so copy the IRQ info */
             cpup->eq = new_cpup->eq;
 
             /* Bump start_cpu to the next slot to minmize the
              * chance of having multiple unassigned CPU entries
              * selecting the same IRQ.
              */
             start_cpu = cpumask_next(new_cpu, cpu_present_mask);
             if (start_cpu == nr_cpumask_bits)
                 start_cpu = first_cpu;
 
             lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                     "3337 Set Affinity: CPU %d "
                     "eq %d from peer cpu %d same "
                     "phys_id (%d)\n",
                     cpu, cpup->eq, new_cpu,
                     cpup->phys_id);
         }
     }
 
     /* Set any unassigned cpu map entries to a IRQ on any phys_id */
     start_cpu = first_cpu;
 
     for_each_present_cpu(cpu) {
         cpup = &phba->sli4_hba.cpu_map[cpu];
 
         /* Is this entry unassigned */
         if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {
             /* Mark it as IRQ not assigned by the kernel */
             cpup->flag |= LPFC_CPU_MAP_UNASSIGN;
 
             /* If so, find a new_cpup thats on ANY phys_id
              * as the cpup. start_cpu will start where we
              * left off so all unassigned entries don't get
              * assigned the IRQ of the first entry.
              */
             new_cpu = start_cpu;
             for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
                 new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
                 if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&
                     (new_cpup->eq != LPFC_VECTOR_MAP_EMPTY))
                     goto found_any;
                 new_cpu = cpumask_next(
                     new_cpu, cpu_present_mask);
                 if (new_cpu == nr_cpumask_bits)
                     new_cpu = first_cpu;
             }
             /* We should never leave an entry unassigned */
             lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                     "3339 Set Affinity: CPU %d "
                     "eq %d UNASSIGNED\n",
                     cpup->hdwq, cpup->eq);
             continue;
 found_any:
             /* We found an available entry, copy the IRQ info */
             cpup->eq = new_cpup->eq;
 
             /* Bump start_cpu to the next slot to minmize the
              * chance of having multiple unassigned CPU entries
              * selecting the same IRQ.
              */
             start_cpu = cpumask_next(new_cpu, cpu_present_mask);
             if (start_cpu == nr_cpumask_bits)
                 start_cpu = first_cpu;
 
             lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                     "3338 Set Affinity: CPU %d "
                     "eq %d from peer cpu %d (%d/%d)\n",
                     cpu, cpup->eq, new_cpu,
                     new_cpup->phys_id, new_cpup->core_id);
         }
     }
 
     /* Assign hdwq indices that are unique across all cpus in the map
      * that are also FIRST_CPUs.
      */
     idx = 0;
     for_each_present_cpu(cpu) {
         cpup = &phba->sli4_hba.cpu_map[cpu];
 
         /* Only FIRST IRQs get a hdwq index assignment. */
         if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
             continue;
 
         /* 1 to 1, the first LPFC_CPU_FIRST_IRQ cpus to a unique hdwq */
         cpup->hdwq = idx;
         idx++;
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "3333 Set Affinity: CPU %d (phys %d core %d): "
                 "hdwq %d eq %d flg x%x\n",
                 cpu, cpup->phys_id, cpup->core_id,
                 cpup->hdwq, cpup->eq, cpup->flag);
     }
     /* Associate a hdwq with each cpu_map entry
      * This will be 1 to 1 - hdwq to cpu, unless there are less
      * hardware queues then CPUs. For that case we will just round-robin
      * the available hardware queues as they get assigned to CPUs.
      * The next_idx is the idx from the FIRST_CPU loop above to account
      * for irq_chann < hdwq.  The idx is used for round-robin assignments
      * and needs to start at 0.
      */
     next_idx = idx;
     start_cpu = 0;
     idx = 0;
     for_each_present_cpu(cpu) {
         cpup = &phba->sli4_hba.cpu_map[cpu];
 
         /* FIRST cpus are already mapped. */
         if (cpup->flag & LPFC_CPU_FIRST_IRQ)
             continue;
 
         /* If the cfg_irq_chann < cfg_hdw_queue, set the hdwq
          * of the unassigned cpus to the next idx so that all
          * hdw queues are fully utilized.
          */
         if (next_idx < phba->cfg_hdw_queue) {
             cpup->hdwq = next_idx;
             next_idx++;
             continue;
         }
 
         /* Not a First CPU and all hdw_queues are used.  Reuse a
          * Hardware Queue for another CPU, so be smart about it
          * and pick one that has its IRQ/EQ mapped to the same phys_id
          * (CPU package) and core_id.
          */
         new_cpu = start_cpu;
         for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
             new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
             if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&
                 new_cpup->phys_id == cpup->phys_id &&
                 new_cpup->core_id == cpup->core_id) {
                 goto found_hdwq;
             }
             new_cpu = cpumask_next(new_cpu, cpu_present_mask);
             if (new_cpu == nr_cpumask_bits)
                 new_cpu = first_cpu;
         }
 
         /* If we can't match both phys_id and core_id,
          * settle for just a phys_id match.
          */
         new_cpu = start_cpu;
         for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
             new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
             if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&
                 new_cpup->phys_id == cpup->phys_id)
                 goto found_hdwq;
 
             new_cpu = cpumask_next(new_cpu, cpu_present_mask);
             if (new_cpu == nr_cpumask_bits)
                 new_cpu = first_cpu;
         }
 
         /* Otherwise just round robin on cfg_hdw_queue */
         cpup->hdwq = idx % phba->cfg_hdw_queue;
         idx++;
         goto logit;
  found_hdwq:
         /* We found an available entry, copy the IRQ info */
         start_cpu = cpumask_next(new_cpu, cpu_present_mask);
         if (start_cpu == nr_cpumask_bits)
             start_cpu = first_cpu;
         cpup->hdwq = new_cpup->hdwq;
  logit:
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "3335 Set Affinity: CPU %d (phys %d core %d): "
                 "hdwq %d eq %d flg x%x\n",
                 cpu, cpup->phys_id, cpup->core_id,
                 cpup->hdwq, cpup->eq, cpup->flag);
     }
 
     /*
      * Initialize the cpu_map slots for not-present cpus in case
      * a cpu is hot-added. Perform a simple hdwq round robin assignment.
      */
     idx = 0;
     for_each_possible_cpu(cpu) {
         cpup = &phba->sli4_hba.cpu_map[cpu];
 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
         c_stat = per_cpu_ptr(phba->sli4_hba.c_stat, cpu);
         c_stat->hdwq_no = cpup->hdwq;
 #endif
         if (cpup->hdwq != LPFC_VECTOR_MAP_EMPTY)
             continue;
 
         cpup->hdwq = idx++ % phba->cfg_hdw_queue;
 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
         c_stat->hdwq_no = cpup->hdwq;
 #endif
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "3340 Set Affinity: not present "
                 "CPU %d hdwq %d\n",
                 cpu, cpup->hdwq);
     }
 
     /* The cpu_map array will be used later during initialization
      * when EQ / CQ / WQs are allocated and configured.
      */
     return;
 }
 
 /**
  * lpfc_cpuhp_get_eq
  *
  * @phba:   pointer to lpfc hba data structure.
  * @cpu:    cpu going offline
  * @eqlist: eq list to append to
  */
 static int
 lpfc_cpuhp_get_eq(struct lpfc_hba *phba, unsigned int cpu,
           struct list_head *eqlist)
 {
     const struct cpumask *maskp;
     struct lpfc_queue *eq;
     struct cpumask *tmp;
     u16 idx;
 
     tmp = kzalloc(cpumask_size(), GFP_KERNEL);
     if (!tmp)
         return -ENOMEM;
 
     for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
         maskp = pci_irq_get_affinity(phba->pcidev, idx);
         if (!maskp)
             continue;
         /*
          * if irq is not affinitized to the cpu going
          * then we don't need to poll the eq attached
          * to it.
          */
         if (!cpumask_and(tmp, maskp, cpumask_of(cpu)))
             continue;
         /* get the cpus that are online and are affini-
          * tized to this irq vector.  If the count is
          * more than 1 then cpuhp is not going to shut-
          * down this vector.  Since this cpu has not
          * gone offline yet, we need >1.
          */
         cpumask_and(tmp, maskp, cpu_online_mask);
         if (cpumask_weight(tmp) > 1)
             continue;
 
         /* Now that we have an irq to shutdown, get the eq
          * mapped to this irq.  Note: multiple hdwq's in
          * the software can share an eq, but eventually
          * only eq will be mapped to this vector
          */
         eq = phba->sli4_hba.hba_eq_hdl[idx].eq;
         list_add(&eq->_poll_list, eqlist);
     }
     kfree(tmp);
     return 0;
 }
 
 static void __lpfc_cpuhp_remove(struct lpfc_hba *phba)
 {
     if (phba->sli_rev != LPFC_SLI_REV4)
         return;
 
     cpuhp_state_remove_instance_nocalls(lpfc_cpuhp_state,
                         &phba->cpuhp);
     /*
      * unregistering the instance doesn't stop the polling
      * timer. Wait for the poll timer to retire.
      */
     synchronize_rcu();
     del_timer_sync(&phba->cpuhp_poll_timer);
 }
 
 static void lpfc_cpuhp_remove(struct lpfc_hba *phba)
 {
     if (phba->pport->fc_flag & FC_OFFLINE_MODE)
         return;
 
     __lpfc_cpuhp_remove(phba);
 }
 
 static void lpfc_cpuhp_add(struct lpfc_hba *phba)
 {
     if (phba->sli_rev != LPFC_SLI_REV4)
         return;
 
     rcu_read_lock();
 
     if (!list_empty(&phba->poll_list))
         mod_timer(&phba->cpuhp_poll_timer,
               jiffies + msecs_to_jiffies(LPFC_POLL_HB));
 
     rcu_read_unlock();
 
     cpuhp_state_add_instance_nocalls(lpfc_cpuhp_state,
                      &phba->cpuhp);
 }
 
 static int __lpfc_cpuhp_checks(struct lpfc_hba *phba, int *retval)
 {
     if (phba->pport->load_flag & FC_UNLOADING) {
         *retval = -EAGAIN;
         return true;
     }
 
     if (phba->sli_rev != LPFC_SLI_REV4) {
         *retval = 0;
         return true;
     }
 
     /* proceed with the hotplug */
     return false;
 }
 
 /**
  * lpfc_irq_set_aff - set IRQ affinity
  * @eqhdl: EQ handle
  * @cpu: cpu to set affinity
  *
  **/
 static inline void
 lpfc_irq_set_aff(struct lpfc_hba_eq_hdl *eqhdl, unsigned int cpu)
 {
     cpumask_clear(&eqhdl->aff_mask);
     cpumask_set_cpu(cpu, &eqhdl->aff_mask);
     irq_set_status_flags(eqhdl->irq, IRQ_NO_BALANCING);
     irq_set_affinity(eqhdl->irq, &eqhdl->aff_mask);
 }
 
 /**
  * lpfc_irq_clear_aff - clear IRQ affinity
  * @eqhdl: EQ handle
  *
  **/
 static inline void
 lpfc_irq_clear_aff(struct lpfc_hba_eq_hdl *eqhdl)
 {
     cpumask_clear(&eqhdl->aff_mask);
     irq_clear_status_flags(eqhdl->irq, IRQ_NO_BALANCING);
 }
 
 /**
  * lpfc_irq_rebalance - rebalances IRQ affinity according to cpuhp event
  * @phba: pointer to HBA context object.
  * @cpu: cpu going offline/online
  * @offline: true, cpu is going offline. false, cpu is coming online.
  *
  * If cpu is going offline, we'll try our best effort to find the next
  * online cpu on the phba's original_mask and migrate all offlining IRQ
  * affinities.
  *
  * If cpu is coming online, reaffinitize the IRQ back to the onlining cpu.
  *
  * Note: Call only if NUMA or NHT mode is enabled, otherwise rely on
  *   PCI_IRQ_AFFINITY to auto-manage IRQ affinity.
  *
  **/
 static void
 lpfc_irq_rebalance(struct lpfc_hba *phba, unsigned int cpu, bool offline)
 {
     struct lpfc_vector_map_info *cpup;
     struct cpumask *aff_mask;
     unsigned int cpu_select, cpu_next, idx;
     const struct cpumask *orig_mask;
 
     if (phba->irq_chann_mode == NORMAL_MODE)
         return;
 
     orig_mask = &phba->sli4_hba.irq_aff_mask;
 
     if (!cpumask_test_cpu(cpu, orig_mask))
         return;
 
     cpup = &phba->sli4_hba.cpu_map[cpu];
 
     if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
         return;
 
     if (offline) {
         /* Find next online CPU on original mask */
         cpu_next = cpumask_next_wrap(cpu, orig_mask, cpu, true);
         cpu_select = lpfc_next_online_cpu(orig_mask, cpu_next);
 
         /* Found a valid CPU */
         if ((cpu_select < nr_cpu_ids) && (cpu_select != cpu)) {
             /* Go through each eqhdl and ensure offlining
              * cpu aff_mask is migrated
              */
             for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
                 aff_mask = lpfc_get_aff_mask(idx);
 
                 /* Migrate affinity */
                 if (cpumask_test_cpu(cpu, aff_mask))
                     lpfc_irq_set_aff(lpfc_get_eq_hdl(idx),
                              cpu_select);
             }
         } else {
             /* Rely on irqbalance if no online CPUs left on NUMA */
             for (idx = 0; idx < phba->cfg_irq_chann; idx++)
                 lpfc_irq_clear_aff(lpfc_get_eq_hdl(idx));
         }
     } else {
         /* Migrate affinity back to this CPU */
         lpfc_irq_set_aff(lpfc_get_eq_hdl(cpup->eq), cpu);
     }
 }
 
 static int lpfc_cpu_offline(unsigned int cpu, struct hlist_node *node)
 {
     struct lpfc_hba *phba = hlist_entry_safe(node, struct lpfc_hba, cpuhp);
     struct lpfc_queue *eq, *next;
     LIST_HEAD(eqlist);
     int retval;
 
     if (!phba) {
         WARN_ONCE(!phba, "cpu: %u. phba:NULL", raw_smp_processor_id());
         return 0;
     }
 
     if (__lpfc_cpuhp_checks(phba, &retval))
         return retval;
 
     lpfc_irq_rebalance(phba, cpu, true);
 
     retval = lpfc_cpuhp_get_eq(phba, cpu, &eqlist);
     if (retval)
         return retval;
 
     /* start polling on these eq's */
     list_for_each_entry_safe(eq, next, &eqlist, _poll_list) {
         list_del_init(&eq->_poll_list);
         lpfc_sli4_start_polling(eq);
     }
 
     return 0;
 }
 
 static int lpfc_cpu_online(unsigned int cpu, struct hlist_node *node)
 {
     struct lpfc_hba *phba = hlist_entry_safe(node, struct lpfc_hba, cpuhp);
     struct lpfc_queue *eq, *next;
     unsigned int n;
     int retval;
 
     if (!phba) {
         WARN_ONCE(!phba, "cpu: %u. phba:NULL", raw_smp_processor_id());
         return 0;
     }
 
     if (__lpfc_cpuhp_checks(phba, &retval))
         return retval;
 
     lpfc_irq_rebalance(phba, cpu, false);
 
     list_for_each_entry_safe(eq, next, &phba->poll_list, _poll_list) {
         n = lpfc_find_cpu_handle(phba, eq->hdwq, LPFC_FIND_BY_HDWQ);
         if (n == cpu)
             lpfc_sli4_stop_polling(eq);
     }
 
     return 0;
 }
 
 /**
  * lpfc_sli4_enable_msix - Enable MSI-X interrupt mode to SLI-4 device
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to enable the MSI-X interrupt vectors to device
  * with SLI-4 interface spec.  It also allocates MSI-X vectors and maps them
  * to cpus on the system.
  *
  * When cfg_irq_numa is enabled, the adapter will only allocate vectors for
  * the number of cpus on the same numa node as this adapter.  The vectors are
  * allocated without requesting OS affinity mapping.  A vector will be
  * allocated and assigned to each online and offline cpu.  If the cpu is
  * online, then affinity will be set to that cpu.  If the cpu is offline, then
  * affinity will be set to the nearest peer cpu within the numa node that is
  * online.  If there are no online cpus within the numa node, affinity is not
  * assigned and the OS may do as it pleases. Note: cpu vector affinity mapping
  * is consistent with the way cpu online/offline is handled when cfg_irq_numa is
  * configured.
  *
  * If numa mode is not enabled and there is more than 1 vector allocated, then
  * the driver relies on the managed irq interface where the OS assigns vector to
  * cpu affinity.  The driver will then use that affinity mapping to setup its
  * cpu mapping table.
  *
  * Return codes
  * 0 - successful
  * other values - error
  **/
 static int
 lpfc_sli4_enable_msix(struct lpfc_hba *phba)
 {
     int vectors, rc, index;
     char *name;
     const struct cpumask *aff_mask = NULL;
     unsigned int cpu = 0, cpu_cnt = 0, cpu_select = nr_cpu_ids;
     struct lpfc_vector_map_info *cpup;
     struct lpfc_hba_eq_hdl *eqhdl;
     const struct cpumask *maskp;
     unsigned int flags = PCI_IRQ_MSIX;
 
     /* Set up MSI-X multi-message vectors */
     vectors = phba->cfg_irq_chann;
 
     if (phba->irq_chann_mode != NORMAL_MODE)
         aff_mask = &phba->sli4_hba.irq_aff_mask;
 
     if (aff_mask) {
         cpu_cnt = cpumask_weight(aff_mask);
         vectors = min(phba->cfg_irq_chann, cpu_cnt);
 
         /* cpu: iterates over aff_mask including offline or online
          * cpu_select: iterates over online aff_mask to set affinity
          */
         cpu = cpumask_first(aff_mask);
         cpu_select = lpfc_next_online_cpu(aff_mask, cpu);
     } else {
         flags |= PCI_IRQ_AFFINITY;
     }
 
     rc = pci_alloc_irq_vectors(phba->pcidev, 1, vectors, flags);
     if (rc < 0) {
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "0484 PCI enable MSI-X failed (%d)\n", rc);
         goto vec_fail_out;
     }
     vectors = rc;
 
     /* Assign MSI-X vectors to interrupt handlers */
     for (index = 0; index < vectors; index++) {
         eqhdl = lpfc_get_eq_hdl(index);
         name = eqhdl->handler_name;
         memset(name, 0, LPFC_SLI4_HANDLER_NAME_SZ);
         snprintf(name, LPFC_SLI4_HANDLER_NAME_SZ,
              LPFC_DRIVER_HANDLER_NAME"%d", index);
 
         eqhdl->idx = index;
         rc = request_irq(pci_irq_vector(phba->pcidev, index),
              &lpfc_sli4_hba_intr_handler, 0,
              name, eqhdl);
         if (rc) {
             lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                     "0486 MSI-X fast-path (%d) "
                     "request_irq failed (%d)\n", index, rc);
             goto cfg_fail_out;
         }
 
         eqhdl->irq = pci_irq_vector(phba->pcidev, index);
 
         if (aff_mask) {
             /* If found a neighboring online cpu, set affinity */
             if (cpu_select < nr_cpu_ids)
                 lpfc_irq_set_aff(eqhdl, cpu_select);
 
             /* Assign EQ to cpu_map */
             lpfc_assign_eq_map_info(phba, index,
                         LPFC_CPU_FIRST_IRQ,
                         cpu);
 
             /* Iterate to next offline or online cpu in aff_mask */
             cpu = cpumask_next(cpu, aff_mask);
 
             /* Find next online cpu in aff_mask to set affinity */
             cpu_select = lpfc_next_online_cpu(aff_mask, cpu);
         } else if (vectors == 1) {
             cpu = cpumask_first(cpu_present_mask);
             lpfc_assign_eq_map_info(phba, index, LPFC_CPU_FIRST_IRQ,
                         cpu);
         } else {
             maskp = pci_irq_get_affinity(phba->pcidev, index);
 
             /* Loop through all CPUs associated with vector index */
             for_each_cpu_and(cpu, maskp, cpu_present_mask) {
                 cpup = &phba->sli4_hba.cpu_map[cpu];
 
                 /* If this is the first CPU thats assigned to
                  * this vector, set LPFC_CPU_FIRST_IRQ.
                  *
                  * With certain platforms its possible that irq
                  * vectors are affinitized to all the cpu's.
                  * This can result in each cpu_map.eq to be set
                  * to the last vector, resulting in overwrite
                  * of all the previous cpu_map.eq.  Ensure that
                  * each vector receives a place in cpu_map.
                  * Later call to lpfc_cpu_affinity_check will
                  * ensure we are nicely balanced out.
                  */
                 if (cpup->eq != LPFC_VECTOR_MAP_EMPTY)
                     continue;
                 lpfc_assign_eq_map_info(phba, index,
                             LPFC_CPU_FIRST_IRQ,
                             cpu);
                 break;
             }
         }
     }
 
     if (vectors != phba->cfg_irq_chann) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3238 Reducing IO channels to match number of "
                 "MSI-X vectors, requested %d got %d\n",
                 phba->cfg_irq_chann, vectors);
         if (phba->cfg_irq_chann > vectors)
             phba->cfg_irq_chann = vectors;
     }
 
     return rc;
 
 cfg_fail_out:
     /* free the irq already requested */
     for (--index; index >= 0; index--) {
         eqhdl = lpfc_get_eq_hdl(index);
         lpfc_irq_clear_aff(eqhdl);
         free_irq(eqhdl->irq, eqhdl);
     }
 
     /* Unconfigure MSI-X capability structure */
     pci_free_irq_vectors(phba->pcidev);
 
 vec_fail_out:
     return rc;
 }
 
 /**
  * lpfc_sli4_enable_msi - Enable MSI interrupt mode to SLI-4 device
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to enable the MSI interrupt mode to device with
  * SLI-4 interface spec. The kernel function pci_alloc_irq_vectors() is
  * called to enable the MSI vector. The device driver is responsible for
  * calling the request_irq() to register MSI vector with a interrupt the
  * handler, which is done in this function.
  *
  * Return codes
  *  0 - successful
  *  other values - error
  **/
 static int
 lpfc_sli4_enable_msi(struct lpfc_hba *phba)
 {
     int rc, index;
     unsigned int cpu;
     struct lpfc_hba_eq_hdl *eqhdl;
 
     rc = pci_alloc_irq_vectors(phba->pcidev, 1, 1,
                    PCI_IRQ_MSI | PCI_IRQ_AFFINITY);
     if (rc > 0)
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "0487 PCI enable MSI mode success.\n");
     else {
         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                 "0488 PCI enable MSI mode failed (%d)\n", rc);
         return rc ? rc : -1;
     }
 
     rc = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
              0, LPFC_DRIVER_NAME, phba);
     if (rc) {
         pci_free_irq_vectors(phba->pcidev);
         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
                 "0490 MSI request_irq failed (%d)\n", rc);
         return rc;
     }
 
     eqhdl = lpfc_get_eq_hdl(0);
     eqhdl->irq = pci_irq_vector(phba->pcidev, 0);
 
     cpu = cpumask_first(cpu_present_mask);
     lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ, cpu);
 
     for (index = 0; index < phba->cfg_irq_chann; index++) {
         eqhdl = lpfc_get_eq_hdl(index);
         eqhdl->idx = index;
     }
 
     return 0;
 }
 
 /**
  * lpfc_sli4_enable_intr - Enable device interrupt to SLI-4 device
  * @phba: pointer to lpfc hba data structure.
  * @cfg_mode: Interrupt configuration mode (INTx, MSI or MSI-X).
  *
  * This routine is invoked to enable device interrupt and associate driver's
  * interrupt handler(s) to interrupt vector(s) to device with SLI-4
  * interface spec. Depends on the interrupt mode configured to the driver,
  * the driver will try to fallback from the configured interrupt mode to an
  * interrupt mode which is supported by the platform, kernel, and device in
  * the order of:
  * MSI-X -> MSI -> IRQ.
  *
  * Return codes
  *  0 - successful
  *  other values - error
  **/
 static uint32_t
 lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
 {
     uint32_t intr_mode = LPFC_INTR_ERROR;
     int retval, idx;
 
     if (cfg_mode == 2) {
         /* Preparation before conf_msi mbox cmd */
         retval = 0;
         if (!retval) {
             /* Now, try to enable MSI-X interrupt mode */
             retval = lpfc_sli4_enable_msix(phba);
             if (!retval) {
                 /* Indicate initialization to MSI-X mode */
                 phba->intr_type = MSIX;
                 intr_mode = 2;
             }
         }
     }
 
     /* Fallback to MSI if MSI-X initialization failed */
     if (cfg_mode >= 1 && phba->intr_type == NONE) {
         retval = lpfc_sli4_enable_msi(phba);
         if (!retval) {
             /* Indicate initialization to MSI mode */
             phba->intr_type = MSI;
             intr_mode = 1;
         }
     }
 
     /* Fallback to INTx if both MSI-X/MSI initalization failed */
     if (phba->intr_type == NONE) {
         retval = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
         if (!retval) {
             struct lpfc_hba_eq_hdl *eqhdl;
             unsigned int cpu;
 
             /* Indicate initialization to INTx mode */
             phba->intr_type = INTx;
             intr_mode = 0;
 
             eqhdl = lpfc_get_eq_hdl(0);
             eqhdl->irq = pci_irq_vector(phba->pcidev, 0);
 
             cpu = cpumask_first(cpu_present_mask);
             lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ,
                         cpu);
             for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
                 eqhdl = lpfc_get_eq_hdl(idx);
                 eqhdl->idx = idx;
             }
         }
     }
     return intr_mode;
 }
 
 /**
  * lpfc_sli4_disable_intr - Disable device interrupt to SLI-4 device
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to disable device interrupt and disassociate
  * the driver's interrupt handler(s) from interrupt vector(s) to device
  * with SLI-4 interface spec. Depending on the interrupt mode, the driver
  * will release the interrupt vector(s) for the message signaled interrupt.
  **/
 static void
 lpfc_sli4_disable_intr(struct lpfc_hba *phba)
 {
     /* Disable the currently initialized interrupt mode */
     if (phba->intr_type == MSIX) {
         int index;
         struct lpfc_hba_eq_hdl *eqhdl;
 
         /* Free up MSI-X multi-message vectors */
         for (index = 0; index < phba->cfg_irq_chann; index++) {
             eqhdl = lpfc_get_eq_hdl(index);
             lpfc_irq_clear_aff(eqhdl);
             free_irq(eqhdl->irq, eqhdl);
         }
     } else {
         free_irq(phba->pcidev->irq, phba);
     }
 
     pci_free_irq_vectors(phba->pcidev);
 
     /* Reset interrupt management states */
     phba->intr_type = NONE;
     phba->sli.slistat.sli_intr = 0;
 }
 
 /**
  * lpfc_unset_hba - Unset SLI3 hba device initialization
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is invoked to unset the HBA device initialization steps to
  * a device with SLI-3 interface spec.
  **/
 static void
 lpfc_unset_hba(struct lpfc_hba *phba)
 {
     struct lpfc_vport *vport = phba->pport;
     struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
 
     spin_lock_irq(shost->host_lock);
     vport->load_flag |= FC_UNLOADING;
     spin_unlock_irq(shost->host_lock);
 
     kfree(phba->vpi_bmask);
     kfree(phba->vpi_ids);
 
     lpfc_stop_hba_timers(phba);
 
     phba->pport->work_port_events = 0;
 
     lpfc_sli_hba_down(phba);
 
     lpfc_sli_brdrestart(phba);
 
     lpfc_sli_disable_intr(phba);
 
     return;
 }
 
 /**
  * lpfc_sli4_xri_exchange_busy_wait - Wait for device XRI exchange busy
  * @phba: Pointer to HBA context object.
  *
  * This function is called in the SLI4 code path to wait for completion
  * of device's XRIs exchange busy. It will check the XRI exchange busy
  * on outstanding FCP and ELS I/Os every 10ms for up to 10 seconds; after
  * that, it will check the XRI exchange busy on outstanding FCP and ELS
  * I/Os every 30 seconds, log error message, and wait forever. Only when
  * all XRI exchange busy complete, the driver unload shall proceed with
  * invoking the function reset ioctl mailbox command to the CNA and the
  * the rest of the driver unload resource release.
  **/
 static void
 lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba *phba)
 {
     struct lpfc_sli4_hdw_queue *qp;
     int idx, ccnt;
     int wait_time = 0;
     int io_xri_cmpl = 1;
     int nvmet_xri_cmpl = 1;
     int els_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
 
     /* Driver just aborted IOs during the hba_unset process.  Pause
      * here to give the HBA time to complete the IO and get entries
      * into the abts lists.
      */
     msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1 * 5);
 
     /* Wait for NVME pending IO to flush back to transport. */
     if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
         lpfc_nvme_wait_for_io_drain(phba);
 
     ccnt = 0;
     for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
         qp = &phba->sli4_hba.hdwq[idx];
         io_xri_cmpl = list_empty(&qp->lpfc_abts_io_buf_list);
         if (!io_xri_cmpl) /* if list is NOT empty */
             ccnt++;
     }
     if (ccnt)
         io_xri_cmpl = 0;
 
     if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
         nvmet_xri_cmpl =
             list_empty(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
     }
 
     while (!els_xri_cmpl || !io_xri_cmpl || !nvmet_xri_cmpl) {
         if (wait_time > LPFC_XRI_EXCH_BUSY_WAIT_TMO) {
             if (!nvmet_xri_cmpl)
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "6424 NVMET XRI exchange busy "
                         "wait time: %d seconds.\n",
                         wait_time/1000);
             if (!io_xri_cmpl)
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "6100 IO XRI exchange busy "
                         "wait time: %d seconds.\n",
                         wait_time/1000);
             if (!els_xri_cmpl)
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "2878 ELS XRI exchange busy "
                         "wait time: %d seconds.\n",
                         wait_time/1000);
             msleep(LPFC_XRI_EXCH_BUSY_WAIT_T2);
             wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T2;
         } else {
             msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1);
             wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T1;
         }
 
         ccnt = 0;
         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
             qp = &phba->sli4_hba.hdwq[idx];
             io_xri_cmpl = list_empty(
                 &qp->lpfc_abts_io_buf_list);
             if (!io_xri_cmpl) /* if list is NOT empty */
                 ccnt++;
         }
         if (ccnt)
             io_xri_cmpl = 0;
 
         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
             nvmet_xri_cmpl = list_empty(
                 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
         }
         els_xri_cmpl =
             list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
 
     }
 }
 
 /**
  * lpfc_sli4_hba_unset - Unset the fcoe hba
  * @phba: Pointer to HBA context object.
  *
  * This function is called in the SLI4 code path to reset the HBA's FCoE
  * function. The caller is not required to hold any lock. This routine
  * issues PCI function reset mailbox command to reset the FCoE function.
  * At the end of the function, it calls lpfc_hba_down_post function to
  * free any pending commands.
  **/
 static void
 lpfc_sli4_hba_unset(struct lpfc_hba *phba)
 {
     int wait_cnt = 0;
     LPFC_MBOXQ_t *mboxq;
     struct pci_dev *pdev = phba->pcidev;
 
     lpfc_stop_hba_timers(phba);
     hrtimer_cancel(&phba->cmf_timer);
 
     if (phba->pport)
         phba->sli4_hba.intr_enable = 0;
 
     /*
      * Gracefully wait out the potential current outstanding asynchronous
      * mailbox command.
      */
 
     /* First, block any pending async mailbox command from posted */
     spin_lock_irq(&phba->hbalock);
     phba->sli.sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
     spin_unlock_irq(&phba->hbalock);
     /* Now, trying to wait it out if we can */
     while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
         msleep(10);
         if (++wait_cnt > LPFC_ACTIVE_MBOX_WAIT_CNT)
             break;
     }
     /* Forcefully release the outstanding mailbox command if timed out */
     if (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
         spin_lock_irq(&phba->hbalock);
         mboxq = phba->sli.mbox_active;
         mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
         __lpfc_mbox_cmpl_put(phba, mboxq);
         phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
         phba->sli.mbox_active = NULL;
         spin_unlock_irq(&phba->hbalock);
     }
 
     /* Abort all iocbs associated with the hba */
     lpfc_sli_hba_iocb_abort(phba);
 
     if (!pci_channel_offline(phba->pcidev))
         /* Wait for completion of device XRI exchange busy */
         lpfc_sli4_xri_exchange_busy_wait(phba);
 
     /* per-phba callback de-registration for hotplug event */
     if (phba->pport)
         lpfc_cpuhp_remove(phba);
 
     /* Disable PCI subsystem interrupt */
     lpfc_sli4_disable_intr(phba);
 
     /* Disable SR-IOV if enabled */
     if (phba->cfg_sriov_nr_virtfn)
         pci_disable_sriov(pdev);
 
     /* Stop kthread signal shall trigger work_done one more time */
     kthread_stop(phba->worker_thread);
 
     /* Disable FW logging to host memory */
     lpfc_ras_stop_fwlog(phba);
 
     /* Reset SLI4 HBA FCoE function */
     lpfc_pci_function_reset(phba);
 
     /* release all queue allocated resources. */
     lpfc_sli4_queue_destroy(phba);
 
     /* Free RAS DMA memory */
     if (phba->ras_fwlog.ras_enabled)
         lpfc_sli4_ras_dma_free(phba);
 
     /* Stop the SLI4 device port */
     if (phba->pport)
         phba->pport->work_port_events = 0;
 }
 
 static uint32_t
 lpfc_cgn_crc32(uint32_t crc, u8 byte)
 {
     uint32_t msb = 0;
     uint32_t bit;
 
     for (bit = 0; bit < 8; bit++) {
         msb = (crc >> 31) & 1;
         crc <<= 1;
 
         if (msb ^ (byte & 1)) {
             crc ^= LPFC_CGN_CRC32_MAGIC_NUMBER;
             crc |= 1;
         }
         byte >>= 1;
     }
     return crc;
 }
 
 static uint32_t
 lpfc_cgn_reverse_bits(uint32_t wd)
 {
     uint32_t result = 0;
     uint32_t i;
 
     for (i = 0; i < 32; i++) {
         result <<= 1;
         result |= (1 & (wd >> i));
     }
     return result;
 }
 
 /*
  * The routine corresponds with the algorithm the HBA firmware
  * uses to validate the data integrity.
  */
 uint32_t
 lpfc_cgn_calc_crc32(void *ptr, uint32_t byteLen, uint32_t crc)
 {
     uint32_t  i;
     uint32_t result;
     uint8_t  *data = (uint8_t *)ptr;
 
     for (i = 0; i < byteLen; ++i)
         crc = lpfc_cgn_crc32(crc, data[i]);
 
     result = ~lpfc_cgn_reverse_bits(crc);
     return result;
 }
 
 void
 lpfc_init_congestion_buf(struct lpfc_hba *phba)
 {
     struct lpfc_cgn_info *cp;
     struct timespec64 cmpl_time;
     struct tm broken;
     uint16_t size;
     uint32_t crc;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
             "6235 INIT Congestion Buffer %p\n", phba->cgn_i);
 
     if (!phba->cgn_i)
         return;
     cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
 
     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->cgn_evt_minute = 0;
     phba->hba_flag &= ~HBA_CGN_DAY_WRAP;
 
     memset(cp, 0xff, offsetof(struct lpfc_cgn_info, cgn_stat));
     cp->cgn_info_size = cpu_to_le16(LPFC_CGN_INFO_SZ);
     cp->cgn_info_version = LPFC_CGN_INFO_V3;
 
     /* cgn parameters */
     cp->cgn_info_mode = phba->cgn_p.cgn_param_mode;
     cp->cgn_info_level0 = phba->cgn_p.cgn_param_level0;
     cp->cgn_info_level1 = phba->cgn_p.cgn_param_level1;
     cp->cgn_info_level2 = phba->cgn_p.cgn_param_level2;
 
     ktime_get_real_ts64(&cmpl_time);
     time64_to_tm(cmpl_time.tv_sec, 0, &broken);
 
     cp->cgn_info_month = broken.tm_mon + 1;
     cp->cgn_info_day = broken.tm_mday;
     cp->cgn_info_year = broken.tm_year - 100; /* relative to 2000 */
     cp->cgn_info_hour = broken.tm_hour;
     cp->cgn_info_minute = broken.tm_min;
     cp->cgn_info_second = broken.tm_sec;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT,
             "2643 CGNInfo Init: Start Time "
             "%d/%d/%d %d:%d:%d\n",
             cp->cgn_info_day, cp->cgn_info_month,
             cp->cgn_info_year, cp->cgn_info_hour,
             cp->cgn_info_minute, cp->cgn_info_second);
 
     /* Fill in default LUN qdepth */
     if (phba->pport) {
         size = (uint16_t)(phba->pport->cfg_lun_queue_depth);
         cp->cgn_lunq = cpu_to_le16(size);
     }
 
     /* last used Index initialized to 0xff already */
 
     cp->cgn_warn_freq = cpu_to_le16(LPFC_FPIN_INIT_FREQ);
     cp->cgn_alarm_freq = cpu_to_le16(LPFC_FPIN_INIT_FREQ);
     crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ, LPFC_CGN_CRC32_SEED);
     cp->cgn_info_crc = cpu_to_le32(crc);
 
     phba->cgn_evt_timestamp = jiffies +
         msecs_to_jiffies(LPFC_CGN_TIMER_TO_MIN);
 }
 
 void
 lpfc_init_congestion_stat(struct lpfc_hba *phba)
 {
     struct lpfc_cgn_info *cp;
     struct timespec64 cmpl_time;
     struct tm broken;
     uint32_t crc;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
             "6236 INIT Congestion Stat %p\n", phba->cgn_i);
 
     if (!phba->cgn_i)
         return;
 
     cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
     memset(&cp->cgn_stat, 0, sizeof(cp->cgn_stat));
 
     ktime_get_real_ts64(&cmpl_time);
     time64_to_tm(cmpl_time.tv_sec, 0, &broken);
 
     cp->cgn_stat_month = broken.tm_mon + 1;
     cp->cgn_stat_day = broken.tm_mday;
     cp->cgn_stat_year = broken.tm_year - 100; /* relative to 2000 */
     cp->cgn_stat_hour = broken.tm_hour;
     cp->cgn_stat_minute = broken.tm_min;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT,
             "2647 CGNstat Init: Start Time "
             "%d/%d/%d %d:%d\n",
             cp->cgn_stat_day, cp->cgn_stat_month,
             cp->cgn_stat_year, cp->cgn_stat_hour,
             cp->cgn_stat_minute);
 
     crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ, LPFC_CGN_CRC32_SEED);
     cp->cgn_info_crc = cpu_to_le32(crc);
 }
 
 /**
  * __lpfc_reg_congestion_buf - register congestion info buffer with HBA
  * @phba: Pointer to hba context object.
  * @reg: flag to determine register or unregister.
  */
 static int
 __lpfc_reg_congestion_buf(struct lpfc_hba *phba, int reg)
 {
     struct lpfc_mbx_reg_congestion_buf *reg_congestion_buf;
     union  lpfc_sli4_cfg_shdr *shdr;
     uint32_t shdr_status, shdr_add_status;
     LPFC_MBOXQ_t *mboxq;
     int length, rc;
 
     if (!phba->cgn_i)
         return -ENXIO;
 
     mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
     if (!mboxq) {
         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
                 "2641 REG_CONGESTION_BUF mbox allocation fail: "
                 "HBA state x%x reg %d\n",
                 phba->pport->port_state, reg);
         return -ENOMEM;
     }
 
     length = (sizeof(struct lpfc_mbx_reg_congestion_buf) -
         sizeof(struct lpfc_sli4_cfg_mhdr));
     lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
              LPFC_MBOX_OPCODE_REG_CONGESTION_BUF, length,
              LPFC_SLI4_MBX_EMBED);
     reg_congestion_buf = &mboxq->u.mqe.un.reg_congestion_buf;
     bf_set(lpfc_mbx_reg_cgn_buf_type, reg_congestion_buf, 1);
     if (reg > 0)
         bf_set(lpfc_mbx_reg_cgn_buf_cnt, reg_congestion_buf, 1);
     else
         bf_set(lpfc_mbx_reg_cgn_buf_cnt, reg_congestion_buf, 0);
     reg_congestion_buf->length = sizeof(struct lpfc_cgn_info);
     reg_congestion_buf->addr_lo =
         putPaddrLow(phba->cgn_i->phys);
     reg_congestion_buf->addr_hi =
         putPaddrHigh(phba->cgn_i->phys);
 
     rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
     shdr = (union lpfc_sli4_cfg_shdr *)
         &mboxq->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);
     mempool_free(mboxq, phba->mbox_mem_pool);
     if (shdr_status || shdr_add_status || rc) {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "2642 REG_CONGESTION_BUF mailbox "
                 "failed with status x%x add_status x%x,"
                 " mbx status x%x reg %d\n",
                 shdr_status, shdr_add_status, rc, reg);
         return -ENXIO;
     }
     return 0;
 }
 
 int
 lpfc_unreg_congestion_buf(struct lpfc_hba *phba)
 {
     lpfc_cmf_stop(phba);
     return __lpfc_reg_congestion_buf(phba, 0);
 }
 
 int
 lpfc_reg_congestion_buf(struct lpfc_hba *phba)
 {
     return __lpfc_reg_congestion_buf(phba, 1);
 }
 
 /**
  * lpfc_get_sli4_parameters - Get the SLI4 Config PARAMETERS.
  * @phba: Pointer to HBA context object.
  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
  *
  * This function is called in the SLI4 code path to read the port's
  * sli4 capabilities.
  *
  * This function may be be called from any context that can block-wait
  * for the completion.  The expectation is that this routine is called
  * typically from probe_one or from the online routine.
  **/
 int
 lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
 {
     int rc;
     struct lpfc_mqe *mqe = &mboxq->u.mqe;
     struct lpfc_pc_sli4_params *sli4_params;
     uint32_t mbox_tmo;
     int length;
     bool exp_wqcq_pages = true;
     struct lpfc_sli4_parameters *mbx_sli4_parameters;
 
     /*
      * By default, the driver assumes the SLI4 port requires RPI
      * header postings.  The SLI4_PARAM response will correct this
      * assumption.
      */
     phba->sli4_hba.rpi_hdrs_in_use = 1;
 
     /* Read the port's SLI4 Config Parameters */
     length = (sizeof(struct lpfc_mbx_get_sli4_parameters) -
           sizeof(struct lpfc_sli4_cfg_mhdr));
     lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
              LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS,
              length, LPFC_SLI4_MBX_EMBED);
     if (!phba->sli4_hba.intr_enable)
         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
     else {
         mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
         rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
     }
     if (unlikely(rc))
         return rc;
     sli4_params = &phba->sli4_hba.pc_sli4_params;
     mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;
     sli4_params->if_type = bf_get(cfg_if_type, mbx_sli4_parameters);
     sli4_params->sli_rev = bf_get(cfg_sli_rev, mbx_sli4_parameters);
     sli4_params->sli_family = bf_get(cfg_sli_family, mbx_sli4_parameters);
     sli4_params->featurelevel_1 = bf_get(cfg_sli_hint_1,
                          mbx_sli4_parameters);
     sli4_params->featurelevel_2 = bf_get(cfg_sli_hint_2,
                          mbx_sli4_parameters);
     if (bf_get(cfg_phwq, mbx_sli4_parameters))
         phba->sli3_options |= LPFC_SLI4_PHWQ_ENABLED;
     else
         phba->sli3_options &= ~LPFC_SLI4_PHWQ_ENABLED;
     sli4_params->sge_supp_len = mbx_sli4_parameters->sge_supp_len;
     sli4_params->loopbk_scope = bf_get(cfg_loopbk_scope,
                        mbx_sli4_parameters);
     sli4_params->oas_supported = bf_get(cfg_oas, mbx_sli4_parameters);
     sli4_params->cqv = bf_get(cfg_cqv, mbx_sli4_parameters);
     sli4_params->mqv = bf_get(cfg_mqv, mbx_sli4_parameters);
     sli4_params->wqv = bf_get(cfg_wqv, mbx_sli4_parameters);
     sli4_params->rqv = bf_get(cfg_rqv, mbx_sli4_parameters);
     sli4_params->eqav = bf_get(cfg_eqav, mbx_sli4_parameters);
     sli4_params->cqav = bf_get(cfg_cqav, mbx_sli4_parameters);
     sli4_params->wqsize = bf_get(cfg_wqsize, mbx_sli4_parameters);
     sli4_params->bv1s = bf_get(cfg_bv1s, mbx_sli4_parameters);
     sli4_params->pls = bf_get(cfg_pvl, mbx_sli4_parameters);
     sli4_params->sgl_pages_max = bf_get(cfg_sgl_page_cnt,
                         mbx_sli4_parameters);
     sli4_params->wqpcnt = bf_get(cfg_wqpcnt, mbx_sli4_parameters);
     sli4_params->sgl_pp_align = bf_get(cfg_sgl_pp_align,
                        mbx_sli4_parameters);
     phba->sli4_hba.extents_in_use = bf_get(cfg_ext, mbx_sli4_parameters);
     phba->sli4_hba.rpi_hdrs_in_use = bf_get(cfg_hdrr, mbx_sli4_parameters);
 
     /* Check for Extended Pre-Registered SGL support */
     phba->cfg_xpsgl = bf_get(cfg_xpsgl, mbx_sli4_parameters);
 
     /* Check for firmware nvme support */
     rc = (bf_get(cfg_nvme, mbx_sli4_parameters) &&
              bf_get(cfg_xib, mbx_sli4_parameters));
 
     if (rc) {
         /* Save this to indicate the Firmware supports NVME */
         sli4_params->nvme = 1;
 
         /* Firmware NVME support, check driver FC4 NVME support */
         if (phba->cfg_enable_fc4_type == LPFC_ENABLE_FCP) {
             lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME,
                     "6133 Disabling NVME support: "
                     "FC4 type not supported: x%x\n",
                     phba->cfg_enable_fc4_type);
             goto fcponly;
         }
     } else {
         /* No firmware NVME support, check driver FC4 NVME support */
         sli4_params->nvme = 0;
         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
             lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_NVME,
                     "6101 Disabling NVME support: Not "
                     "supported by firmware (%d %d) x%x\n",
                     bf_get(cfg_nvme, mbx_sli4_parameters),
                     bf_get(cfg_xib, mbx_sli4_parameters),
                     phba->cfg_enable_fc4_type);
 fcponly:
             phba->nvmet_support = 0;
             phba->cfg_nvmet_mrq = 0;
             phba->cfg_nvme_seg_cnt = 0;
 
             /* If no FC4 type support, move to just SCSI support */
             if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
                 return -ENODEV;
             phba->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
         }
     }
 
     /* If the NVME FC4 type is enabled, scale the sg_seg_cnt to
      * accommodate 512K and 1M IOs in a single nvme buf.
      */
     if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
         phba->cfg_sg_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
 
     /* Enable embedded Payload BDE if support is indicated */
     if (bf_get(cfg_pbde, mbx_sli4_parameters))
         phba->cfg_enable_pbde = 1;
     else
         phba->cfg_enable_pbde = 0;
 
     /*
      * To support Suppress Response feature we must satisfy 3 conditions.
      * lpfc_suppress_rsp module parameter must be set (default).
      * In SLI4-Parameters Descriptor:
      * Extended Inline Buffers (XIB) must be supported.
      * Suppress Response IU Not Supported (SRIUNS) must NOT be supported
      * (double negative).
      */
     if (phba->cfg_suppress_rsp && bf_get(cfg_xib, mbx_sli4_parameters) &&
         !(bf_get(cfg_nosr, mbx_sli4_parameters)))
         phba->sli.sli_flag |= LPFC_SLI_SUPPRESS_RSP;
     else
         phba->cfg_suppress_rsp = 0;
 
     if (bf_get(cfg_eqdr, mbx_sli4_parameters))
         phba->sli.sli_flag |= LPFC_SLI_USE_EQDR;
 
     /* Make sure that sge_supp_len can be handled by the driver */
     if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
         sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
 
     /*
      * Check whether the adapter supports an embedded copy of the
      * FCP CMD IU within the WQE for FCP_Ixxx commands. In order
      * to use this option, 128-byte WQEs must be used.
      */
     if (bf_get(cfg_ext_embed_cb, mbx_sli4_parameters))
         phba->fcp_embed_io = 1;
     else
         phba->fcp_embed_io = 0;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME,
             "6422 XIB %d PBDE %d: FCP %d NVME %d %d %d\n",
             bf_get(cfg_xib, mbx_sli4_parameters),
             phba->cfg_enable_pbde,
             phba->fcp_embed_io, sli4_params->nvme,
             phba->cfg_nvme_embed_cmd, phba->cfg_suppress_rsp);
 
     if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
         LPFC_SLI_INTF_IF_TYPE_2) &&
         (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==
          LPFC_SLI_INTF_FAMILY_LNCR_A0))
         exp_wqcq_pages = false;
 
     if ((bf_get(cfg_cqpsize, mbx_sli4_parameters) & LPFC_CQ_16K_PAGE_SZ) &&
         (bf_get(cfg_wqpsize, mbx_sli4_parameters) & LPFC_WQ_16K_PAGE_SZ) &&
         exp_wqcq_pages &&
         (sli4_params->wqsize & LPFC_WQ_SZ128_SUPPORT))
         phba->enab_exp_wqcq_pages = 1;
     else
         phba->enab_exp_wqcq_pages = 0;
     /*
      * Check if the SLI port supports MDS Diagnostics
      */
     if (bf_get(cfg_mds_diags, mbx_sli4_parameters))
         phba->mds_diags_support = 1;
     else
         phba->mds_diags_support = 0;
 
     /*
      * Check if the SLI port supports NSLER
      */
     if (bf_get(cfg_nsler, mbx_sli4_parameters))
         phba->nsler = 1;
     else
         phba->nsler = 0;
 
     return 0;
 }
 
 /**
  * lpfc_pci_probe_one_s3 - PCI probe func to reg SLI-3 device to PCI subsystem.
  * @pdev: pointer to PCI device
  * @pid: pointer to PCI device identifier
  *
  * This routine is to be called to attach a device with SLI-3 interface spec
  * to the PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
  * information of the device and driver to see if the driver state that it can
  * support this kind of device. If the match is successful, the driver core
  * invokes this routine. If this routine determines it can claim the HBA, it
  * does all the initialization that it needs to do to handle the HBA properly.
  *
  * Return code
  *  0 - driver can claim the device
  *  negative value - driver can not claim the device
  **/
 static int
 lpfc_pci_probe_one_s3(struct pci_dev *pdev, const struct pci_device_id *pid)
 {
     struct lpfc_hba   *phba;
     struct lpfc_vport *vport = NULL;
     struct Scsi_Host  *shost = NULL;
     int error;
     uint32_t cfg_mode, intr_mode;
 
     /* Allocate memory for HBA structure */
     phba = lpfc_hba_alloc(pdev);
     if (!phba)
         return -ENOMEM;
 
     /* Perform generic PCI device enabling operation */
     error = lpfc_enable_pci_dev(phba);
     if (error)
         goto out_free_phba;
 
     /* Set up SLI API function jump table for PCI-device group-0 HBAs */
     error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_LP);
     if (error)
         goto out_disable_pci_dev;
 
     /* Set up SLI-3 specific device PCI memory space */
     error = lpfc_sli_pci_mem_setup(phba);
     if (error) {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "1402 Failed to set up pci memory space.\n");
         goto out_disable_pci_dev;
     }
 
     /* Set up SLI-3 specific device driver resources */
     error = lpfc_sli_driver_resource_setup(phba);
     if (error) {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "1404 Failed to set up driver resource.\n");
         goto out_unset_pci_mem_s3;
     }
 
     /* Initialize and populate the iocb list per host */
 
     error = lpfc_init_iocb_list(phba, LPFC_IOCB_LIST_CNT);
     if (error) {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "1405 Failed to initialize iocb list.\n");
         goto out_unset_driver_resource_s3;
     }
 
     /* Set up common device driver resources */
     error = lpfc_setup_driver_resource_phase2(phba);
     if (error) {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "1406 Failed to set up driver resource.\n");
         goto out_free_iocb_list;
     }
 
     /* Get the default values for Model Name and Description */
     lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
 
     /* Create SCSI host to the physical port */
     error = lpfc_create_shost(phba);
     if (error) {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "1407 Failed to create scsi host.\n");
         goto out_unset_driver_resource;
     }
 
     /* Configure sysfs attributes */
     vport = phba->pport;
     error = lpfc_alloc_sysfs_attr(vport);
     if (error) {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "1476 Failed to allocate sysfs attr\n");
         goto out_destroy_shost;
     }
 
     shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
     /* Now, trying to enable interrupt and bring up the device */
     cfg_mode = phba->cfg_use_msi;
     while (true) {
         /* Put device to a known state before enabling interrupt */
         lpfc_stop_port(phba);
         /* Configure and enable interrupt */
         intr_mode = lpfc_sli_enable_intr(phba, cfg_mode);
         if (intr_mode == LPFC_INTR_ERROR) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "0431 Failed to enable interrupt.\n");
             error = -ENODEV;
             goto out_free_sysfs_attr;
         }
         /* SLI-3 HBA setup */
         if (lpfc_sli_hba_setup(phba)) {
             lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                     "1477 Failed to set up hba\n");
             error = -ENODEV;
             goto out_remove_device;
         }
 
         /* Wait 50ms for the interrupts of previous mailbox commands */
         msleep(50);
         /* Check active interrupts on message signaled interrupts */
         if (intr_mode == 0 ||
             phba->sli.slistat.sli_intr > LPFC_MSIX_VECTORS) {
             /* Log the current active interrupt mode */
             phba->intr_mode = intr_mode;
             lpfc_log_intr_mode(phba, intr_mode);
             break;
         } else {
             lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                     "0447 Configure interrupt mode (%d) "
                     "failed active interrupt test.\n",
                     intr_mode);
             /* Disable the current interrupt mode */
             lpfc_sli_disable_intr(phba);
             /* Try next level of interrupt mode */
             cfg_mode = --intr_mode;
         }
     }
 
     /* Perform post initialization setup */
     lpfc_post_init_setup(phba);
 
     /* Check if there are static vports to be created. */
     lpfc_create_static_vport(phba);
 
     return 0;
 
 out_remove_device:
     lpfc_unset_hba(phba);
 out_free_sysfs_attr:
     lpfc_free_sysfs_attr(vport);
 out_destroy_shost:
     lpfc_destroy_shost(phba);
 out_unset_driver_resource:
     lpfc_unset_driver_resource_phase2(phba);
 out_free_iocb_list:
     lpfc_free_iocb_list(phba);
 out_unset_driver_resource_s3:
     lpfc_sli_driver_resource_unset(phba);
 out_unset_pci_mem_s3:
     lpfc_sli_pci_mem_unset(phba);
 out_disable_pci_dev:
     lpfc_disable_pci_dev(phba);
     if (shost)
         scsi_host_put(shost);
 out_free_phba:
     lpfc_hba_free(phba);
     return error;
 }
 
 /**
  * lpfc_pci_remove_one_s3 - PCI func to unreg SLI-3 device from PCI subsystem.
  * @pdev: pointer to PCI device
  *
  * This routine is to be called to disattach a device with SLI-3 interface
  * spec from PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
  * removed from PCI bus, it performs all the necessary cleanup for the HBA
  * device to be removed from the PCI subsystem properly.
  **/
 static void
 lpfc_pci_remove_one_s3(struct pci_dev *pdev)
 {
     struct Scsi_Host  *shost = pci_get_drvdata(pdev);
     struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
     struct lpfc_vport **vports;
     struct lpfc_hba   *phba = vport->phba;
     int i;
 
     spin_lock_irq(&phba->hbalock);
     vport->load_flag |= FC_UNLOADING;
     spin_unlock_irq(&phba->hbalock);
 
     lpfc_free_sysfs_attr(vport);
 
     /* Release all the vports against this physical port */
     vports = lpfc_create_vport_work_array(phba);
     if (vports != NULL)
         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
             if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
                 continue;
             fc_vport_terminate(vports[i]->fc_vport);
         }
     lpfc_destroy_vport_work_array(phba, vports);
 
     /* Remove FC host with the physical port */
     fc_remove_host(shost);
     scsi_remove_host(shost);
 
     /* Clean up all nodes, mailboxes and IOs. */
     lpfc_cleanup(vport);
 
     /*
      * Bring down the SLI Layer. This step disable all interrupts,
      * clears the rings, discards all mailbox commands, and resets
      * the HBA.
      */
 
     /* HBA interrupt will be disabled after this call */
     lpfc_sli_hba_down(phba);
     /* Stop kthread signal shall trigger work_done one more time */
     kthread_stop(phba->worker_thread);
     /* Final cleanup of txcmplq and reset the HBA */
     lpfc_sli_brdrestart(phba);
 
     kfree(phba->vpi_bmask);
     kfree(phba->vpi_ids);
 
     lpfc_stop_hba_timers(phba);
     spin_lock_irq(&phba->port_list_lock);
     list_del_init(&vport->listentry);
     spin_unlock_irq(&phba->port_list_lock);
 
     lpfc_debugfs_terminate(vport);
 
     /* Disable SR-IOV if enabled */
     if (phba->cfg_sriov_nr_virtfn)
         pci_disable_sriov(pdev);
 
     /* Disable interrupt */
     lpfc_sli_disable_intr(phba);
 
     scsi_host_put(shost);
 
     /*
      * Call scsi_free before mem_free since scsi bufs are released to their
      * corresponding pools here.
      */
     lpfc_scsi_free(phba);
     lpfc_free_iocb_list(phba);
 
     lpfc_mem_free_all(phba);
 
     dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
               phba->hbqslimp.virt, phba->hbqslimp.phys);
 
     /* Free resources associated with SLI2 interface */
     dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
               phba->slim2p.virt, phba->slim2p.phys);
 
     /* unmap adapter SLIM and Control Registers */
     iounmap(phba->ctrl_regs_memmap_p);
     iounmap(phba->slim_memmap_p);
 
     lpfc_hba_free(phba);
 
     pci_release_mem_regions(pdev);
     pci_disable_device(pdev);
 }
 
 /**
  * lpfc_pci_suspend_one_s3 - PCI func to suspend SLI-3 device for power mgmnt
  * @dev_d: pointer to device
  *
  * This routine is to be called from the kernel's PCI subsystem to support
  * system Power Management (PM) to device with SLI-3 interface spec. When
  * PM invokes this method, it quiesces the device by stopping the driver's
  * worker thread for the device, turning off device's interrupt and DMA,
  * and bring the device offline. Note that as the driver implements the
  * minimum PM requirements to a power-aware driver's PM support for the
  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
  * to the suspend() method call will be treated as SUSPEND and the driver will
  * fully reinitialize its device during resume() method call, the driver will
  * set device to PCI_D3hot state in PCI config space instead of setting it
  * according to the @msg provided by the PM.
  *
  * Return code
  *  0 - driver suspended the device
  *  Error otherwise
  **/
 static int __maybe_unused
 lpfc_pci_suspend_one_s3(struct device *dev_d)
 {
     struct Scsi_Host *shost = dev_get_drvdata(dev_d);
     struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "0473 PCI device Power Management suspend.\n");
 
     /* Bring down the device */
     lpfc_offline_prep(phba, LPFC_MBX_WAIT);
     lpfc_offline(phba);
     kthread_stop(phba->worker_thread);
 
     /* Disable interrupt from device */
     lpfc_sli_disable_intr(phba);
 
     return 0;
 }
 
 /**
  * lpfc_pci_resume_one_s3 - PCI func to resume SLI-3 device for power mgmnt
  * @dev_d: pointer to device
  *
  * This routine is to be called from the kernel's PCI subsystem to support
  * system Power Management (PM) to device with SLI-3 interface spec. When PM
  * invokes this method, it restores the device's PCI config space state and
  * fully reinitializes the device and brings it online. Note that as the
  * driver implements the minimum PM requirements to a power-aware driver's
  * PM for suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE,
  * FREEZE) to the suspend() method call will be treated as SUSPEND and the
  * driver will fully reinitialize its device during resume() method call,
  * the device will be set to PCI_D0 directly in PCI config space before
  * restoring the state.
  *
  * Return code
  *  0 - driver suspended the device
  *  Error otherwise
  **/
 static int __maybe_unused
 lpfc_pci_resume_one_s3(struct device *dev_d)
 {
     struct Scsi_Host *shost = dev_get_drvdata(dev_d);
     struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
     uint32_t intr_mode;
     int error;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "0452 PCI device Power Management resume.\n");
 
     /* Startup the kernel thread for this host adapter. */
     phba->worker_thread = kthread_run(lpfc_do_work, phba,
                     "lpfc_worker_%d", phba->brd_no);
     if (IS_ERR(phba->worker_thread)) {
         error = PTR_ERR(phba->worker_thread);
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "0434 PM resume failed to start worker "
                 "thread: error=x%x.\n", error);
         return error;
     }
 
     /* Init cpu_map array */
     lpfc_cpu_map_array_init(phba);
     /* Init hba_eq_hdl array */
     lpfc_hba_eq_hdl_array_init(phba);
     /* Configure and enable interrupt */
     intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
     if (intr_mode == LPFC_INTR_ERROR) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0430 PM resume Failed to enable interrupt\n");
         return -EIO;
     } else
         phba->intr_mode = intr_mode;
 
     /* Restart HBA and bring it online */
     lpfc_sli_brdrestart(phba);
     lpfc_online(phba);
 
     /* Log the current active interrupt mode */
     lpfc_log_intr_mode(phba, phba->intr_mode);
 
     return 0;
 }
 
 /**
  * lpfc_sli_prep_dev_for_recover - Prepare SLI3 device for pci slot recover
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is called to prepare the SLI3 device for PCI slot recover. It
  * aborts all the outstanding SCSI I/Os to the pci device.
  **/
 static void
 lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)
 {
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "2723 PCI channel I/O abort preparing for recovery\n");
 
     /*
      * There may be errored I/Os through HBA, abort all I/Os on txcmplq
      * and let the SCSI mid-layer to retry them to recover.
      */
     lpfc_sli_abort_fcp_rings(phba);
 }
 
 /**
  * lpfc_sli_prep_dev_for_reset - Prepare SLI3 device for pci slot reset
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is called to prepare the SLI3 device for PCI slot reset. It
  * disables the device interrupt and pci device, and aborts the internal FCP
  * pending I/Os.
  **/
 static void
 lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
 {
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "2710 PCI channel disable preparing for reset\n");
 
     /* Block any management I/Os to the device */
     lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
 
     /* Block all SCSI devices' I/Os on the host */
     lpfc_scsi_dev_block(phba);
 
     /* Flush all driver's outstanding SCSI I/Os as we are to reset */
     lpfc_sli_flush_io_rings(phba);
 
     /* stop all timers */
     lpfc_stop_hba_timers(phba);
 
     /* Disable interrupt and pci device */
     lpfc_sli_disable_intr(phba);
     pci_disable_device(phba->pcidev);
 }
 
 /**
  * lpfc_sli_prep_dev_for_perm_failure - Prepare SLI3 dev for pci slot disable
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is called to prepare the SLI3 device for PCI slot permanently
  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
  * pending I/Os.
  **/
 static void
 lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba)
 {
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "2711 PCI channel permanent disable for failure\n");
     /* Block all SCSI devices' I/Os on the host */
     lpfc_scsi_dev_block(phba);
     lpfc_sli4_prep_dev_for_reset(phba);
 
     /* stop all timers */
     lpfc_stop_hba_timers(phba);
 
     /* Clean up all driver's outstanding SCSI I/Os */
     lpfc_sli_flush_io_rings(phba);
 }
 
 /**
  * lpfc_io_error_detected_s3 - Method for handling SLI-3 device PCI I/O error
  * @pdev: pointer to PCI device.
  * @state: the current PCI connection state.
  *
  * This routine is called from the PCI subsystem for I/O error handling to
  * device with SLI-3 interface spec. This function is called by the PCI
  * subsystem after a PCI bus error affecting this device has been detected.
  * When this function is invoked, it will need to stop all the I/Os and
  * interrupt(s) to the device. Once that is done, it will return
  * PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to perform proper recovery
  * as desired.
  *
  * Return codes
  *  PCI_ERS_RESULT_CAN_RECOVER - can be recovered with reset_link
  *  PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
  *  PCI_ERS_RESULT_DISCONNECT - device could not be recovered
  **/
 static pci_ers_result_t
 lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)
 {
     struct Scsi_Host *shost = pci_get_drvdata(pdev);
     struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
 
     switch (state) {
     case pci_channel_io_normal:
         /* Non-fatal error, prepare for recovery */
         lpfc_sli_prep_dev_for_recover(phba);
         return PCI_ERS_RESULT_CAN_RECOVER;
     case pci_channel_io_frozen:
         /* Fatal error, prepare for slot reset */
         lpfc_sli_prep_dev_for_reset(phba);
         return PCI_ERS_RESULT_NEED_RESET;
     case pci_channel_io_perm_failure:
         /* Permanent failure, prepare for device down */
         lpfc_sli_prep_dev_for_perm_failure(phba);
         return PCI_ERS_RESULT_DISCONNECT;
     default:
         /* Unknown state, prepare and request slot reset */
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0472 Unknown PCI error state: x%x\n", state);
         lpfc_sli_prep_dev_for_reset(phba);
         return PCI_ERS_RESULT_NEED_RESET;
     }
 }
 
 /**
  * lpfc_io_slot_reset_s3 - Method for restarting PCI SLI-3 device from scratch.
  * @pdev: pointer to PCI device.
  *
  * This routine is called from the PCI subsystem for error handling to
  * device with SLI-3 interface spec. This is called after PCI bus has been
  * reset to restart the PCI card from scratch, as if from a cold-boot.
  * During the PCI subsystem error recovery, after driver returns
  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
  * recovery and then call this routine before calling the .resume method
  * to recover the device. This function will initialize the HBA device,
  * enable the interrupt, but it will just put the HBA to offline state
  * without passing any I/O traffic.
  *
  * Return codes
  *  PCI_ERS_RESULT_RECOVERED - the device has been recovered
  *  PCI_ERS_RESULT_DISCONNECT - device could not be recovered
  */
 static pci_ers_result_t
 lpfc_io_slot_reset_s3(struct pci_dev *pdev)
 {
     struct Scsi_Host *shost = pci_get_drvdata(pdev);
     struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
     struct lpfc_sli *psli = &phba->sli;
     uint32_t intr_mode;
 
     dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
     if (pci_enable_device_mem(pdev)) {
         printk(KERN_ERR "lpfc: Cannot re-enable "
             "PCI device after reset.\n");
         return PCI_ERS_RESULT_DISCONNECT;
     }
 
     pci_restore_state(pdev);
 
     /*
      * As the new kernel behavior of pci_restore_state() API call clears
      * device saved_state flag, need to save the restored state again.
      */
     pci_save_state(pdev);
 
     if (pdev->is_busmaster)
         pci_set_master(pdev);
 
     spin_lock_irq(&phba->hbalock);
     psli->sli_flag &= ~LPFC_SLI_ACTIVE;
     spin_unlock_irq(&phba->hbalock);
 
     /* Configure and enable interrupt */
     intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
     if (intr_mode == LPFC_INTR_ERROR) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0427 Cannot re-enable interrupt after "
                 "slot reset.\n");
         return PCI_ERS_RESULT_DISCONNECT;
     } else
         phba->intr_mode = intr_mode;
 
     /* Take device offline, it will perform cleanup */
     lpfc_offline_prep(phba, LPFC_MBX_WAIT);
     lpfc_offline(phba);
     lpfc_sli_brdrestart(phba);
 
     /* Log the current active interrupt mode */
     lpfc_log_intr_mode(phba, phba->intr_mode);
 
     return PCI_ERS_RESULT_RECOVERED;
 }
 
 /**
  * lpfc_io_resume_s3 - Method for resuming PCI I/O operation on SLI-3 device.
  * @pdev: pointer to PCI device
  *
  * This routine is called from the PCI subsystem for error handling to device
  * with SLI-3 interface spec. It is called when kernel error recovery tells
  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
  * error recovery. After this call, traffic can start to flow from this device
  * again.
  */
 static void
 lpfc_io_resume_s3(struct pci_dev *pdev)
 {
     struct Scsi_Host *shost = pci_get_drvdata(pdev);
     struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
 
     /* Bring device online, it will be no-op for non-fatal error resume */
     lpfc_online(phba);
 }
 
 /**
  * lpfc_sli4_get_els_iocb_cnt - Calculate the # of ELS IOCBs to reserve
  * @phba: pointer to lpfc hba data structure.
  *
  * returns the number of ELS/CT IOCBs to reserve
  **/
 int
 lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba *phba)
 {
     int max_xri = phba->sli4_hba.max_cfg_param.max_xri;
 
     if (phba->sli_rev == LPFC_SLI_REV4) {
         if (max_xri <= 100)
             return 10;
         else if (max_xri <= 256)
             return 25;
         else if (max_xri <= 512)
             return 50;
         else if (max_xri <= 1024)
             return 100;
         else if (max_xri <= 1536)
             return 150;
         else if (max_xri <= 2048)
             return 200;
         else
             return 250;
     } else
         return 0;
 }
 
 /**
  * lpfc_sli4_get_iocb_cnt - Calculate the # of total IOCBs to reserve
  * @phba: pointer to lpfc hba data structure.
  *
  * returns the number of ELS/CT + NVMET IOCBs to reserve
  **/
 int
 lpfc_sli4_get_iocb_cnt(struct lpfc_hba *phba)
 {
     int max_xri = lpfc_sli4_get_els_iocb_cnt(phba);
 
     if (phba->nvmet_support)
         max_xri += LPFC_NVMET_BUF_POST;
     return max_xri;
 }
 
 
 static int
 lpfc_log_write_firmware_error(struct lpfc_hba *phba, uint32_t offset,
     uint32_t magic_number, uint32_t ftype, uint32_t fid, uint32_t fsize,
     const struct firmware *fw)
 {
     int rc;
     u8 sli_family;
 
     sli_family = bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf);
     /* Three cases:  (1) FW was not supported on the detected adapter.
      * (2) FW update has been locked out administratively.
      * (3) Some other error during FW update.
      * In each case, an unmaskable message is written to the console
      * for admin diagnosis.
      */
     if (offset == ADD_STATUS_FW_NOT_SUPPORTED ||
         (sli_family == LPFC_SLI_INTF_FAMILY_G6 &&
          magic_number != MAGIC_NUMBER_G6) ||
         (sli_family == LPFC_SLI_INTF_FAMILY_G7 &&
          magic_number != MAGIC_NUMBER_G7) ||
         (sli_family == LPFC_SLI_INTF_FAMILY_G7P &&
          magic_number != MAGIC_NUMBER_G7P)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3030 This firmware version is not supported on"
                 " this HBA model. Device:%x Magic:%x Type:%x "
                 "ID:%x Size %d %zd\n",
                 phba->pcidev->device, magic_number, ftype, fid,
                 fsize, fw->size);
         rc = -EINVAL;
     } else if (offset == ADD_STATUS_FW_DOWNLOAD_HW_DISABLED) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3021 Firmware downloads have been prohibited "
                 "by a system configuration setting on "
                 "Device:%x Magic:%x Type:%x ID:%x Size %d "
                 "%zd\n",
                 phba->pcidev->device, magic_number, ftype, fid,
                 fsize, fw->size);
         rc = -EACCES;
     } else {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3022 FW Download failed. Add Status x%x "
                 "Device:%x Magic:%x Type:%x ID:%x Size %d "
                 "%zd\n",
                 offset, phba->pcidev->device, magic_number,
                 ftype, fid, fsize, fw->size);
         rc = -EIO;
     }
     return rc;
 }
 
 /**
  * lpfc_write_firmware - attempt to write a firmware image to the port
  * @fw: pointer to firmware image returned from request_firmware.
  * @context: pointer to firmware image returned from request_firmware.
  *
  **/
 static void
 lpfc_write_firmware(const struct firmware *fw, void *context)
 {
     struct lpfc_hba *phba = (struct lpfc_hba *)context;
     char fwrev[FW_REV_STR_SIZE];
     struct lpfc_grp_hdr *image;
     struct list_head dma_buffer_list;
     int i, rc = 0;
     struct lpfc_dmabuf *dmabuf, *next;
     uint32_t offset = 0, temp_offset = 0;
     uint32_t magic_number, ftype, fid, fsize;
 
     /* It can be null in no-wait mode, sanity check */
     if (!fw) {
         rc = -ENXIO;
         goto out;
     }
     image = (struct lpfc_grp_hdr *)fw->data;
 
     magic_number = be32_to_cpu(image->magic_number);
     ftype = bf_get_be32(lpfc_grp_hdr_file_type, image);
     fid = bf_get_be32(lpfc_grp_hdr_id, image);
     fsize = be32_to_cpu(image->size);
 
     INIT_LIST_HEAD(&dma_buffer_list);
     lpfc_decode_firmware_rev(phba, fwrev, 1);
     if (strncmp(fwrev, image->revision, strnlen(image->revision, 16))) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3023 Updating Firmware, Current Version:%s "
                 "New Version:%s\n",
                 fwrev, image->revision);
         for (i = 0; i < LPFC_MBX_WR_CONFIG_MAX_BDE; i++) {
             dmabuf = kzalloc(sizeof(struct lpfc_dmabuf),
                      GFP_KERNEL);
             if (!dmabuf) {
                 rc = -ENOMEM;
                 goto release_out;
             }
             dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
                               SLI4_PAGE_SIZE,
                               &dmabuf->phys,
                               GFP_KERNEL);
             if (!dmabuf->virt) {
                 kfree(dmabuf);
                 rc = -ENOMEM;
                 goto release_out;
             }
             list_add_tail(&dmabuf->list, &dma_buffer_list);
         }
         while (offset < fw->size) {
             temp_offset = offset;
             list_for_each_entry(dmabuf, &dma_buffer_list, list) {
                 if (temp_offset + SLI4_PAGE_SIZE > fw->size) {
                     memcpy(dmabuf->virt,
                            fw->data + temp_offset,
                            fw->size - temp_offset);
                     temp_offset = fw->size;
                     break;
                 }
                 memcpy(dmabuf->virt, fw->data + temp_offset,
                        SLI4_PAGE_SIZE);
                 temp_offset += SLI4_PAGE_SIZE;
             }
             rc = lpfc_wr_object(phba, &dma_buffer_list,
                     (fw->size - offset), &offset);
             if (rc) {
                 rc = lpfc_log_write_firmware_error(phba, offset,
                                    magic_number,
                                    ftype,
                                    fid,
                                    fsize,
                                    fw);
                 goto release_out;
             }
         }
         rc = offset;
     } else
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3029 Skipped Firmware update, Current "
                 "Version:%s New Version:%s\n",
                 fwrev, image->revision);
 
 release_out:
     list_for_each_entry_safe(dmabuf, next, &dma_buffer_list, list) {
         list_del(&dmabuf->list);
         dma_free_coherent(&phba->pcidev->dev, SLI4_PAGE_SIZE,
                   dmabuf->virt, dmabuf->phys);
         kfree(dmabuf);
     }
     release_firmware(fw);
 out:
     if (rc < 0)
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3062 Firmware update error, status %d.\n", rc);
     else
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "3024 Firmware update success: size %d.\n", rc);
 }
 
 /**
  * lpfc_sli4_request_firmware_update - Request linux generic firmware upgrade
  * @phba: pointer to lpfc hba data structure.
  * @fw_upgrade: which firmware to update.
  *
  * This routine is called to perform Linux generic firmware upgrade on device
  * that supports such feature.
  **/
 int
 lpfc_sli4_request_firmware_update(struct lpfc_hba *phba, uint8_t fw_upgrade)
 {
     uint8_t file_name[ELX_MODEL_NAME_SIZE];
     int ret;
     const struct firmware *fw;
 
     /* Only supported on SLI4 interface type 2 for now */
     if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
         LPFC_SLI_INTF_IF_TYPE_2)
         return -EPERM;
 
     snprintf(file_name, ELX_MODEL_NAME_SIZE, "%s.grp", phba->ModelName);
 
     if (fw_upgrade == INT_FW_UPGRADE) {
         ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_UEVENT,
                     file_name, &phba->pcidev->dev,
                     GFP_KERNEL, (void *)phba,
                     lpfc_write_firmware);
     } else if (fw_upgrade == RUN_FW_UPGRADE) {
         ret = request_firmware(&fw, file_name, &phba->pcidev->dev);
         if (!ret)
             lpfc_write_firmware(fw, (void *)phba);
     } else {
         ret = -EINVAL;
     }
 
     return ret;
 }
 
 /**
  * lpfc_pci_probe_one_s4 - PCI probe func to reg SLI-4 device to PCI subsys
  * @pdev: pointer to PCI device
  * @pid: pointer to PCI device identifier
  *
  * This routine is called from the kernel's PCI subsystem to device with
  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
  * information of the device and driver to see if the driver state that it
  * can support this kind of device. If the match is successful, the driver
  * core invokes this routine. If this routine determines it can claim the HBA,
  * it does all the initialization that it needs to do to handle the HBA
  * properly.
  *
  * Return code
  *  0 - driver can claim the device
  *  negative value - driver can not claim the device
  **/
 static int
 lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)
 {
     struct lpfc_hba   *phba;
     struct lpfc_vport *vport = NULL;
     struct Scsi_Host  *shost = NULL;
     int error;
     uint32_t cfg_mode, intr_mode;
 
     /* Allocate memory for HBA structure */
     phba = lpfc_hba_alloc(pdev);
     if (!phba)
         return -ENOMEM;
 
     INIT_LIST_HEAD(&phba->poll_list);
 
     /* Perform generic PCI device enabling operation */
     error = lpfc_enable_pci_dev(phba);
     if (error)
         goto out_free_phba;
 
     /* Set up SLI API function jump table for PCI-device group-1 HBAs */
     error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_OC);
     if (error)
         goto out_disable_pci_dev;
 
     /* Set up SLI-4 specific device PCI memory space */
     error = lpfc_sli4_pci_mem_setup(phba);
     if (error) {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "1410 Failed to set up pci memory space.\n");
         goto out_disable_pci_dev;
     }
 
     /* Set up SLI-4 Specific device driver resources */
     error = lpfc_sli4_driver_resource_setup(phba);
     if (error) {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "1412 Failed to set up driver resource.\n");
         goto out_unset_pci_mem_s4;
     }
 
     INIT_LIST_HEAD(&phba->active_rrq_list);
     INIT_LIST_HEAD(&phba->fcf.fcf_pri_list);
 
     /* Set up common device driver resources */
     error = lpfc_setup_driver_resource_phase2(phba);
     if (error) {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "1414 Failed to set up driver resource.\n");
         goto out_unset_driver_resource_s4;
     }
 
     /* Get the default values for Model Name and Description */
     lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
 
     /* Now, trying to enable interrupt and bring up the device */
     cfg_mode = phba->cfg_use_msi;
 
     /* Put device to a known state before enabling interrupt */
     phba->pport = NULL;
     lpfc_stop_port(phba);
 
     /* Init cpu_map array */
     lpfc_cpu_map_array_init(phba);
 
     /* Init hba_eq_hdl array */
     lpfc_hba_eq_hdl_array_init(phba);
 
     /* Configure and enable interrupt */
     intr_mode = lpfc_sli4_enable_intr(phba, cfg_mode);
     if (intr_mode == LPFC_INTR_ERROR) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0426 Failed to enable interrupt.\n");
         error = -ENODEV;
         goto out_unset_driver_resource;
     }
     /* Default to single EQ for non-MSI-X */
     if (phba->intr_type != MSIX) {
         phba->cfg_irq_chann = 1;
         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
             if (phba->nvmet_support)
                 phba->cfg_nvmet_mrq = 1;
         }
     }
     lpfc_cpu_affinity_check(phba, phba->cfg_irq_chann);
 
     /* Create SCSI host to the physical port */
     error = lpfc_create_shost(phba);
     if (error) {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "1415 Failed to create scsi host.\n");
         goto out_disable_intr;
     }
     vport = phba->pport;
     shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
 
     /* Configure sysfs attributes */
     error = lpfc_alloc_sysfs_attr(vport);
     if (error) {
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "1416 Failed to allocate sysfs attr\n");
         goto out_destroy_shost;
     }
 
     /* Set up SLI-4 HBA */
     if (lpfc_sli4_hba_setup(phba)) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "1421 Failed to set up hba\n");
         error = -ENODEV;
         goto out_free_sysfs_attr;
     }
 
     /* Log the current active interrupt mode */
     phba->intr_mode = intr_mode;
     lpfc_log_intr_mode(phba, intr_mode);
 
     /* Perform post initialization setup */
     lpfc_post_init_setup(phba);
 
     /* NVME support in FW earlier in the driver load corrects the
      * FC4 type making a check for nvme_support unnecessary.
      */
     if (phba->nvmet_support == 0) {
         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
             /* Create NVME binding with nvme_fc_transport. This
              * ensures the vport is initialized.  If the localport
              * create fails, it should not unload the driver to
              * support field issues.
              */
             error = lpfc_nvme_create_localport(vport);
             if (error) {
                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                         "6004 NVME registration "
                         "failed, error x%x\n",
                         error);
             }
         }
     }
 
     /* check for firmware upgrade or downgrade */
     if (phba->cfg_request_firmware_upgrade)
         lpfc_sli4_request_firmware_update(phba, INT_FW_UPGRADE);
 
     /* Check if there are static vports to be created. */
     lpfc_create_static_vport(phba);
 
     timer_setup(&phba->cpuhp_poll_timer, lpfc_sli4_poll_hbtimer, 0);
     cpuhp_state_add_instance_nocalls(lpfc_cpuhp_state, &phba->cpuhp);
 
     return 0;
 
 out_free_sysfs_attr:
     lpfc_free_sysfs_attr(vport);
 out_destroy_shost:
     lpfc_destroy_shost(phba);
 out_disable_intr:
     lpfc_sli4_disable_intr(phba);
 out_unset_driver_resource:
     lpfc_unset_driver_resource_phase2(phba);
 out_unset_driver_resource_s4:
     lpfc_sli4_driver_resource_unset(phba);
 out_unset_pci_mem_s4:
     lpfc_sli4_pci_mem_unset(phba);
 out_disable_pci_dev:
     lpfc_disable_pci_dev(phba);
     if (shost)
         scsi_host_put(shost);
 out_free_phba:
     lpfc_hba_free(phba);
     return error;
 }
 
 /**
  * lpfc_pci_remove_one_s4 - PCI func to unreg SLI-4 device from PCI subsystem
  * @pdev: pointer to PCI device
  *
  * This routine is called from the kernel's PCI subsystem to device with
  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
  * removed from PCI bus, it performs all the necessary cleanup for the HBA
  * device to be removed from the PCI subsystem properly.
  **/
 static void
 lpfc_pci_remove_one_s4(struct pci_dev *pdev)
 {
     struct Scsi_Host *shost = pci_get_drvdata(pdev);
     struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
     struct lpfc_vport **vports;
     struct lpfc_hba *phba = vport->phba;
     int i;
 
     /* Mark the device unloading flag */
     spin_lock_irq(&phba->hbalock);
     vport->load_flag |= FC_UNLOADING;
     spin_unlock_irq(&phba->hbalock);
     if (phba->cgn_i)
         lpfc_unreg_congestion_buf(phba);
 
     lpfc_free_sysfs_attr(vport);
 
     /* Release all the vports against this physical port */
     vports = lpfc_create_vport_work_array(phba);
     if (vports != NULL)
         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
             if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
                 continue;
             fc_vport_terminate(vports[i]->fc_vport);
         }
     lpfc_destroy_vport_work_array(phba, vports);
 
     /* Remove FC host with the physical port */
     fc_remove_host(shost);
     scsi_remove_host(shost);
 
     /* Perform ndlp cleanup on the physical port.  The nvme and nvmet
      * localports are destroyed after to cleanup all transport memory.
      */
     lpfc_cleanup(vport);
     lpfc_nvmet_destroy_targetport(phba);
     lpfc_nvme_destroy_localport(vport);
 
     /* De-allocate multi-XRI pools */
     if (phba->cfg_xri_rebalancing)
         lpfc_destroy_multixri_pools(phba);
 
     /*
      * Bring down the SLI Layer. This step disables all interrupts,
      * clears the rings, discards all mailbox commands, and resets
      * the HBA FCoE function.
      */
     lpfc_debugfs_terminate(vport);
 
     lpfc_stop_hba_timers(phba);
     spin_lock_irq(&phba->port_list_lock);
     list_del_init(&vport->listentry);
     spin_unlock_irq(&phba->port_list_lock);
 
     /* Perform scsi free before driver resource_unset since scsi
      * buffers are released to their corresponding pools here.
      */
     lpfc_io_free(phba);
     lpfc_free_iocb_list(phba);
     lpfc_sli4_hba_unset(phba);
 
     lpfc_unset_driver_resource_phase2(phba);
     lpfc_sli4_driver_resource_unset(phba);
 
     /* Unmap adapter Control and Doorbell registers */
     lpfc_sli4_pci_mem_unset(phba);
 
     /* Release PCI resources and disable device's PCI function */
     scsi_host_put(shost);
     lpfc_disable_pci_dev(phba);
 
     /* Finally, free the driver's device data structure */
     lpfc_hba_free(phba);
 
     return;
 }
 
 /**
  * lpfc_pci_suspend_one_s4 - PCI func to suspend SLI-4 device for power mgmnt
  * @dev_d: pointer to device
  *
  * This routine is called from the kernel's PCI subsystem to support system
  * Power Management (PM) to device with SLI-4 interface spec. When PM invokes
  * this method, it quiesces the device by stopping the driver's worker
  * thread for the device, turning off device's interrupt and DMA, and bring
  * the device offline. Note that as the driver implements the minimum PM
  * requirements to a power-aware driver's PM support for suspend/resume -- all
  * the possible PM messages (SUSPEND, HIBERNATE, FREEZE) to the suspend()
  * method call will be treated as SUSPEND and the driver will fully
  * reinitialize its device during resume() method call, the driver will set
  * device to PCI_D3hot state in PCI config space instead of setting it
  * according to the @msg provided by the PM.
  *
  * Return code
  *  0 - driver suspended the device
  *  Error otherwise
  **/
 static int __maybe_unused
 lpfc_pci_suspend_one_s4(struct device *dev_d)
 {
     struct Scsi_Host *shost = dev_get_drvdata(dev_d);
     struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "2843 PCI device Power Management suspend.\n");
 
     /* Bring down the device */
     lpfc_offline_prep(phba, LPFC_MBX_WAIT);
     lpfc_offline(phba);
     kthread_stop(phba->worker_thread);
 
     /* Disable interrupt from device */
     lpfc_sli4_disable_intr(phba);
     lpfc_sli4_queue_destroy(phba);
 
     return 0;
 }
 
 /**
  * lpfc_pci_resume_one_s4 - PCI func to resume SLI-4 device for power mgmnt
  * @dev_d: pointer to device
  *
  * This routine is called from the kernel's PCI subsystem to support system
  * Power Management (PM) to device with SLI-4 interface spac. When PM invokes
  * this method, it restores the device's PCI config space state and fully
  * reinitializes the device and brings it online. Note that as the driver
  * implements the minimum PM requirements to a power-aware driver's PM for
  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
  * to the suspend() method call will be treated as SUSPEND and the driver
  * will fully reinitialize its device during resume() method call, the device
  * will be set to PCI_D0 directly in PCI config space before restoring the
  * state.
  *
  * Return code
  *  0 - driver suspended the device
  *  Error otherwise
  **/
 static int __maybe_unused
 lpfc_pci_resume_one_s4(struct device *dev_d)
 {
     struct Scsi_Host *shost = dev_get_drvdata(dev_d);
     struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
     uint32_t intr_mode;
     int error;
 
     lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
             "0292 PCI device Power Management resume.\n");
 
      /* Startup the kernel thread for this host adapter. */
     phba->worker_thread = kthread_run(lpfc_do_work, phba,
                     "lpfc_worker_%d", phba->brd_no);
     if (IS_ERR(phba->worker_thread)) {
         error = PTR_ERR(phba->worker_thread);
         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                 "0293 PM resume failed to start worker "
                 "thread: error=x%x.\n", error);
         return error;
     }
 
     /* Configure and enable interrupt */
     intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
     if (intr_mode == LPFC_INTR_ERROR) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "0294 PM resume Failed to enable interrupt\n");
         return -EIO;
     } else
         phba->intr_mode = intr_mode;
 
     /* Restart HBA and bring it online */
     lpfc_sli_brdrestart(phba);
     lpfc_online(phba);
 
     /* Log the current active interrupt mode */
     lpfc_log_intr_mode(phba, phba->intr_mode);
 
     return 0;
 }
 
 /**
  * lpfc_sli4_prep_dev_for_recover - Prepare SLI4 device for pci slot recover
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is called to prepare the SLI4 device for PCI slot recover. It
  * aborts all the outstanding SCSI I/Os to the pci device.
  **/
 static void
 lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba)
 {
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "2828 PCI channel I/O abort preparing for recovery\n");
     /*
      * There may be errored I/Os through HBA, abort all I/Os on txcmplq
      * and let the SCSI mid-layer to retry them to recover.
      */
     lpfc_sli_abort_fcp_rings(phba);
 }
 
 /**
  * lpfc_sli4_prep_dev_for_reset - Prepare SLI4 device for pci slot reset
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is called to prepare the SLI4 device for PCI slot reset. It
  * disables the device interrupt and pci device, and aborts the internal FCP
  * pending I/Os.
  **/
 static void
 lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)
 {
     int offline =  pci_channel_offline(phba->pcidev);
 
     lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
             "2826 PCI channel disable preparing for reset offline"
             " %d\n", offline);
 
     /* Block any management I/Os to the device */
     lpfc_block_mgmt_io(phba, LPFC_MBX_NO_WAIT);
 
 
     /* HBA_PCI_ERR was set in io_error_detect */
     lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
     /* Flush all driver's outstanding I/Os as we are to reset */
     lpfc_sli_flush_io_rings(phba);
     lpfc_offline(phba);
 
     /* stop all timers */
     lpfc_stop_hba_timers(phba);
 
     lpfc_sli4_queue_destroy(phba);
     /* Disable interrupt and pci device */
     lpfc_sli4_disable_intr(phba);
     pci_disable_device(phba->pcidev);
 }
 
 /**
  * lpfc_sli4_prep_dev_for_perm_failure - Prepare SLI4 dev for pci slot disable
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine is called to prepare the SLI4 device for PCI slot permanently
  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
  * pending I/Os.
  **/
 static void
 lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba)
 {
     lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
             "2827 PCI channel permanent disable for failure\n");
 
     /* Block all SCSI devices' I/Os on the host */
     lpfc_scsi_dev_block(phba);
 
     /* stop all timers */
     lpfc_stop_hba_timers(phba);
 
     /* Clean up all driver's outstanding I/Os */
     lpfc_sli_flush_io_rings(phba);
 }
 
 /**
  * lpfc_io_error_detected_s4 - Method for handling PCI I/O error to SLI-4 device
  * @pdev: pointer to PCI device.
  * @state: the current PCI connection state.
  *
  * This routine is called from the PCI subsystem for error handling to device
  * with SLI-4 interface spec. This function is called by the PCI subsystem
  * after a PCI bus error affecting this device has been detected. When this
  * function is invoked, it will need to stop all the I/Os and interrupt(s)
  * to the device. Once that is done, it will return PCI_ERS_RESULT_NEED_RESET
  * for the PCI subsystem to perform proper recovery as desired.
  *
  * Return codes
  *  PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
  *  PCI_ERS_RESULT_DISCONNECT - device could not be recovered
  **/
 static pci_ers_result_t
 lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state)
 {
     struct Scsi_Host *shost = pci_get_drvdata(pdev);
     struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
     bool hba_pci_err;
 
     switch (state) {
     case pci_channel_io_normal:
         /* Non-fatal error, prepare for recovery */
         lpfc_sli4_prep_dev_for_recover(phba);
         return PCI_ERS_RESULT_CAN_RECOVER;
     case pci_channel_io_frozen:
         hba_pci_err = test_and_set_bit(HBA_PCI_ERR, &phba->bit_flags);
         /* Fatal error, prepare for slot reset */
         if (!hba_pci_err)
             lpfc_sli4_prep_dev_for_reset(phba);
         else
             lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                     "2832  Already handling PCI error "
                     "state: x%x\n", state);
         return PCI_ERS_RESULT_NEED_RESET;
     case pci_channel_io_perm_failure:
         set_bit(HBA_PCI_ERR, &phba->bit_flags);
         /* Permanent failure, prepare for device down */
         lpfc_sli4_prep_dev_for_perm_failure(phba);
         return PCI_ERS_RESULT_DISCONNECT;
     default:
         hba_pci_err = test_and_set_bit(HBA_PCI_ERR, &phba->bit_flags);
         if (!hba_pci_err)
             lpfc_sli4_prep_dev_for_reset(phba);
         /* Unknown state, prepare and request slot reset */
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2825 Unknown PCI error state: x%x\n", state);
         lpfc_sli4_prep_dev_for_reset(phba);
         return PCI_ERS_RESULT_NEED_RESET;
     }
 }
 
 /**
  * lpfc_io_slot_reset_s4 - Method for restart PCI SLI-4 device from scratch
  * @pdev: pointer to PCI device.
  *
  * This routine is called from the PCI subsystem for error handling to device
  * with SLI-4 interface spec. It is called after PCI bus has been reset to
  * restart the PCI card from scratch, as if from a cold-boot. During the
  * PCI subsystem error recovery, after the driver returns
  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
  * recovery and then call this routine before calling the .resume method to
  * recover the device. This function will initialize the HBA device, enable
  * the interrupt, but it will just put the HBA to offline state without
  * passing any I/O traffic.
  *
  * Return codes
  *  PCI_ERS_RESULT_RECOVERED - the device has been recovered
  *  PCI_ERS_RESULT_DISCONNECT - device could not be recovered
  */
 static pci_ers_result_t
 lpfc_io_slot_reset_s4(struct pci_dev *pdev)
 {
     struct Scsi_Host *shost = pci_get_drvdata(pdev);
     struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
     struct lpfc_sli *psli = &phba->sli;
     uint32_t intr_mode;
     bool hba_pci_err;
 
     dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
     if (pci_enable_device_mem(pdev)) {
         printk(KERN_ERR "lpfc: Cannot re-enable "
                "PCI device after reset.\n");
         return PCI_ERS_RESULT_DISCONNECT;
     }
 
     pci_restore_state(pdev);
 
     hba_pci_err = test_and_clear_bit(HBA_PCI_ERR, &phba->bit_flags);
     if (!hba_pci_err)
         dev_info(&pdev->dev,
              "hba_pci_err was not set, recovering slot reset.\n");
     /*
      * As the new kernel behavior of pci_restore_state() API call clears
      * device saved_state flag, need to save the restored state again.
      */
     pci_save_state(pdev);
 
     if (pdev->is_busmaster)
         pci_set_master(pdev);
 
     spin_lock_irq(&phba->hbalock);
     psli->sli_flag &= ~LPFC_SLI_ACTIVE;
     spin_unlock_irq(&phba->hbalock);
 
     /* Init cpu_map array */
     lpfc_cpu_map_array_init(phba);
     /* Configure and enable interrupt */
     intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
     if (intr_mode == LPFC_INTR_ERROR) {
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "2824 Cannot re-enable interrupt after "
                 "slot reset.\n");
         return PCI_ERS_RESULT_DISCONNECT;
     } else
         phba->intr_mode = intr_mode;
     lpfc_cpu_affinity_check(phba, phba->cfg_irq_chann);
 
     /* Log the current active interrupt mode */
     lpfc_log_intr_mode(phba, phba->intr_mode);
 
     return PCI_ERS_RESULT_RECOVERED;
 }
 
 /**
  * lpfc_io_resume_s4 - Method for resuming PCI I/O operation to SLI-4 device
  * @pdev: pointer to PCI device
  *
  * This routine is called from the PCI subsystem for error handling to device
  * with SLI-4 interface spec. It is called when kernel error recovery tells
  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
  * error recovery. After this call, traffic can start to flow from this device
  * again.
  **/
 static void
 lpfc_io_resume_s4(struct pci_dev *pdev)
 {
     struct Scsi_Host *shost = pci_get_drvdata(pdev);
     struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
 
     /*
      * In case of slot reset, as function reset is performed through
      * mailbox command which needs DMA to be enabled, this operation
      * has to be moved to the io resume phase. Taking device offline
      * will perform the necessary cleanup.
      */
     if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) {
         /* Perform device reset */
         lpfc_sli_brdrestart(phba);
         /* Bring the device back online */
         lpfc_online(phba);
     }
 }
 
 /**
  * lpfc_pci_probe_one - lpfc PCI probe func to reg dev to PCI subsystem
  * @pdev: pointer to PCI device
  * @pid: pointer to PCI device identifier
  *
  * This routine is to be registered to the kernel's PCI subsystem. When an
  * Emulex HBA device is presented on PCI bus, the kernel PCI subsystem looks
  * at PCI device-specific information of the device and driver to see if the
  * driver state that it can support this kind of device. If the match is
  * successful, the driver core invokes this routine. This routine dispatches
  * the action to the proper SLI-3 or SLI-4 device probing routine, which will
  * do all the initialization that it needs to do to handle the HBA device
  * properly.
  *
  * Return code
  *  0 - driver can claim the device
  *  negative value - driver can not claim the device
  **/
 static int
 lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
 {
     int rc;
     struct lpfc_sli_intf intf;
 
     if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &intf.word0))
         return -ENODEV;
 
     if ((bf_get(lpfc_sli_intf_valid, &intf) == LPFC_SLI_INTF_VALID) &&
         (bf_get(lpfc_sli_intf_slirev, &intf) == LPFC_SLI_INTF_REV_SLI4))
         rc = lpfc_pci_probe_one_s4(pdev, pid);
     else
         rc = lpfc_pci_probe_one_s3(pdev, pid);
 
     return rc;
 }
 
 /**
  * lpfc_pci_remove_one - lpfc PCI func to unreg dev from PCI subsystem
  * @pdev: pointer to PCI device
  *
  * This routine is to be registered to the kernel's PCI subsystem. When an
  * Emulex HBA is removed from PCI bus, the driver core invokes this routine.
  * This routine dispatches the action to the proper SLI-3 or SLI-4 device
  * remove routine, which will perform all the necessary cleanup for the
  * device to be removed from the PCI subsystem properly.
  **/
 static void
 lpfc_pci_remove_one(struct pci_dev *pdev)
 {
     struct Scsi_Host *shost = pci_get_drvdata(pdev);
     struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
 
     switch (phba->pci_dev_grp) {
     case LPFC_PCI_DEV_LP:
         lpfc_pci_remove_one_s3(pdev);
         break;
     case LPFC_PCI_DEV_OC:
         lpfc_pci_remove_one_s4(pdev);
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "1424 Invalid PCI device group: 0x%x\n",
                 phba->pci_dev_grp);
         break;
     }
     return;
 }
 
 /**
  * lpfc_pci_suspend_one - lpfc PCI func to suspend dev for power management
  * @dev: pointer to device
  *
  * This routine is to be registered to the kernel's PCI subsystem to support
  * system Power Management (PM). When PM invokes this method, it dispatches
  * the action to the proper SLI-3 or SLI-4 device suspend routine, which will
  * suspend the device.
  *
  * Return code
  *  0 - driver suspended the device
  *  Error otherwise
  **/
 static int __maybe_unused
 lpfc_pci_suspend_one(struct device *dev)
 {
     struct Scsi_Host *shost = dev_get_drvdata(dev);
     struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
     int rc = -ENODEV;
 
     switch (phba->pci_dev_grp) {
     case LPFC_PCI_DEV_LP:
         rc = lpfc_pci_suspend_one_s3(dev);
         break;
     case LPFC_PCI_DEV_OC:
         rc = lpfc_pci_suspend_one_s4(dev);
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "1425 Invalid PCI device group: 0x%x\n",
                 phba->pci_dev_grp);
         break;
     }
     return rc;
 }
 
 /**
  * lpfc_pci_resume_one - lpfc PCI func to resume dev for power management
  * @dev: pointer to device
  *
  * This routine is to be registered to the kernel's PCI subsystem to support
  * system Power Management (PM). When PM invokes this method, it dispatches
  * the action to the proper SLI-3 or SLI-4 device resume routine, which will
  * resume the device.
  *
  * Return code
  *  0 - driver suspended the device
  *  Error otherwise
  **/
 static int __maybe_unused
 lpfc_pci_resume_one(struct device *dev)
 {
     struct Scsi_Host *shost = dev_get_drvdata(dev);
     struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
     int rc = -ENODEV;
 
     switch (phba->pci_dev_grp) {
     case LPFC_PCI_DEV_LP:
         rc = lpfc_pci_resume_one_s3(dev);
         break;
     case LPFC_PCI_DEV_OC:
         rc = lpfc_pci_resume_one_s4(dev);
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "1426 Invalid PCI device group: 0x%x\n",
                 phba->pci_dev_grp);
         break;
     }
     return rc;
 }
 
 /**
  * lpfc_io_error_detected - lpfc method for handling PCI I/O error
  * @pdev: pointer to PCI device.
  * @state: the current PCI connection state.
  *
  * This routine is registered to the PCI subsystem for error handling. This
  * function is called by the PCI subsystem after a PCI bus error affecting
  * this device has been detected. When this routine is invoked, it dispatches
  * the action to the proper SLI-3 or SLI-4 device error detected handling
  * routine, which will perform the proper error detected operation.
  *
  * Return codes
  *  PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
  *  PCI_ERS_RESULT_DISCONNECT - device could not be recovered
  **/
 static pci_ers_result_t
 lpfc_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
 {
     struct Scsi_Host *shost = pci_get_drvdata(pdev);
     struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
     pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
 
     if (phba->link_state == LPFC_HBA_ERROR &&
         phba->hba_flag & HBA_IOQ_FLUSH)
         return PCI_ERS_RESULT_NEED_RESET;
 
     switch (phba->pci_dev_grp) {
     case LPFC_PCI_DEV_LP:
         rc = lpfc_io_error_detected_s3(pdev, state);
         break;
     case LPFC_PCI_DEV_OC:
         rc = lpfc_io_error_detected_s4(pdev, state);
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "1427 Invalid PCI device group: 0x%x\n",
                 phba->pci_dev_grp);
         break;
     }
     return rc;
 }
 
 /**
  * lpfc_io_slot_reset - lpfc method for restart PCI dev from scratch
  * @pdev: pointer to PCI device.
  *
  * This routine is registered to the PCI subsystem for error handling. This
  * function is called after PCI bus has been reset to restart the PCI card
  * from scratch, as if from a cold-boot. When this routine is invoked, it
  * dispatches the action to the proper SLI-3 or SLI-4 device reset handling
  * routine, which will perform the proper device reset.
  *
  * Return codes
  *  PCI_ERS_RESULT_RECOVERED - the device has been recovered
  *  PCI_ERS_RESULT_DISCONNECT - device could not be recovered
  **/
 static pci_ers_result_t
 lpfc_io_slot_reset(struct pci_dev *pdev)
 {
     struct Scsi_Host *shost = pci_get_drvdata(pdev);
     struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
     pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
 
     switch (phba->pci_dev_grp) {
     case LPFC_PCI_DEV_LP:
         rc = lpfc_io_slot_reset_s3(pdev);
         break;
     case LPFC_PCI_DEV_OC:
         rc = lpfc_io_slot_reset_s4(pdev);
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "1428 Invalid PCI device group: 0x%x\n",
                 phba->pci_dev_grp);
         break;
     }
     return rc;
 }
 
 /**
  * lpfc_io_resume - lpfc method for resuming PCI I/O operation
  * @pdev: pointer to PCI device
  *
  * This routine is registered to the PCI subsystem for error handling. It
  * is called when kernel error recovery tells the lpfc driver that it is
  * OK to resume normal PCI operation after PCI bus error recovery. When
  * this routine is invoked, it dispatches the action to the proper SLI-3
  * or SLI-4 device io_resume routine, which will resume the device operation.
  **/
 static void
 lpfc_io_resume(struct pci_dev *pdev)
 {
     struct Scsi_Host *shost = pci_get_drvdata(pdev);
     struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
 
     switch (phba->pci_dev_grp) {
     case LPFC_PCI_DEV_LP:
         lpfc_io_resume_s3(pdev);
         break;
     case LPFC_PCI_DEV_OC:
         lpfc_io_resume_s4(pdev);
         break;
     default:
         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
                 "1429 Invalid PCI device group: 0x%x\n",
                 phba->pci_dev_grp);
         break;
     }
     return;
 }
 
 /**
  * lpfc_sli4_oas_verify - Verify OAS is supported by this adapter
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine checks to see if OAS is supported for this adapter. If
  * supported, the configure Flash Optimized Fabric flag is set.  Otherwise,
  * the enable oas flag is cleared and the pool created for OAS device data
  * is destroyed.
  *
  **/
 static void
 lpfc_sli4_oas_verify(struct lpfc_hba *phba)
 {
 
     if (!phba->cfg_EnableXLane)
         return;
 
     if (phba->sli4_hba.pc_sli4_params.oas_supported) {
         phba->cfg_fof = 1;
     } else {
         phba->cfg_fof = 0;
         mempool_destroy(phba->device_data_mem_pool);
         phba->device_data_mem_pool = NULL;
     }
 
     return;
 }
 
 /**
  * lpfc_sli4_ras_init - Verify RAS-FW log is supported by this adapter
  * @phba: pointer to lpfc hba data structure.
  *
  * This routine checks to see if RAS is supported by the adapter. Check the
  * function through which RAS support enablement is to be done.
  **/
 void
 lpfc_sli4_ras_init(struct lpfc_hba *phba)
 {
     /* if ASIC_GEN_NUM >= 0xC) */
     if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
             LPFC_SLI_INTF_IF_TYPE_6) ||
         (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==
             LPFC_SLI_INTF_FAMILY_G6)) {
         phba->ras_fwlog.ras_hwsupport = true;
         if (phba->cfg_ras_fwlog_func == PCI_FUNC(phba->pcidev->devfn) &&
             phba->cfg_ras_fwlog_buffsize)
             phba->ras_fwlog.ras_enabled = true;
         else
             phba->ras_fwlog.ras_enabled = false;
     } else {
         phba->ras_fwlog.ras_hwsupport = false;
     }
 }
 
 
 MODULE_DEVICE_TABLE(pci, lpfc_id_table);
 
 static const struct pci_error_handlers lpfc_err_handler = {
     .error_detected = lpfc_io_error_detected,
     .slot_reset = lpfc_io_slot_reset,
     .resume = lpfc_io_resume,
 };
 
 static SIMPLE_DEV_PM_OPS(lpfc_pci_pm_ops_one,
              lpfc_pci_suspend_one,
              lpfc_pci_resume_one);
 
 static struct pci_driver lpfc_driver = {
     .name       = LPFC_DRIVER_NAME,
     .id_table   = lpfc_id_table,
     .probe      = lpfc_pci_probe_one,
     .remove     = lpfc_pci_remove_one,
     .shutdown   = lpfc_pci_remove_one,
     .driver.pm  = &lpfc_pci_pm_ops_one,
     .err_handler    = &lpfc_err_handler,
 };
 
 static const struct file_operations lpfc_mgmt_fop = {
     .owner = THIS_MODULE,
 };
 
 static struct miscdevice lpfc_mgmt_dev = {
     .minor = MISC_DYNAMIC_MINOR,
     .name = "lpfcmgmt",
     .fops = &lpfc_mgmt_fop,
 };
 
 /**
  * lpfc_init - lpfc module initialization routine
  *
  * This routine is to be invoked when the lpfc module is loaded into the
  * kernel. The special kernel macro module_init() is used to indicate the
  * role of this routine to the kernel as lpfc module entry point.
  *
  * Return codes
  *   0 - successful
  *   -ENOMEM - FC attach transport failed
  *   all others - failed
  */
 static int __init
 lpfc_init(void)
 {
     int error = 0;
 
     pr_info(LPFC_MODULE_DESC "\n");
     pr_info(LPFC_COPYRIGHT "\n");
 
     error = misc_register(&lpfc_mgmt_dev);
     if (error)
         printk(KERN_ERR "Could not register lpfcmgmt device, "
             "misc_register returned with status %d", error);
 
     error = -ENOMEM;
     lpfc_transport_functions.vport_create = lpfc_vport_create;
     lpfc_transport_functions.vport_delete = lpfc_vport_delete;
     lpfc_transport_template =
                 fc_attach_transport(&lpfc_transport_functions);
     if (lpfc_transport_template == NULL)
         goto unregister;
     lpfc_vport_transport_template =
         fc_attach_transport(&lpfc_vport_transport_functions);
     if (lpfc_vport_transport_template == NULL) {
         fc_release_transport(lpfc_transport_template);
         goto unregister;
     }
     lpfc_wqe_cmd_template();
     lpfc_nvmet_cmd_template();
 
     /* Initialize in case vector mapping is needed */
     lpfc_present_cpu = num_present_cpus();
 
     lpfc_pldv_detect = false;
 
     error = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,
                     "lpfc/sli4:online",
                     lpfc_cpu_online, lpfc_cpu_offline);
     if (error < 0)
         goto cpuhp_failure;
     lpfc_cpuhp_state = error;
 
     error = pci_register_driver(&lpfc_driver);
     if (error)
         goto unwind;
 
     return error;
 
 unwind:
     cpuhp_remove_multi_state(lpfc_cpuhp_state);
 cpuhp_failure:
     fc_release_transport(lpfc_transport_template);
     fc_release_transport(lpfc_vport_transport_template);
 unregister:
     misc_deregister(&lpfc_mgmt_dev);
 
     return error;
 }
 
 void lpfc_dmp_dbg(struct lpfc_hba *phba)
 {
     unsigned int start_idx;
     unsigned int dbg_cnt;
     unsigned int temp_idx;
     int i;
     int j = 0;
     unsigned long rem_nsec;
 
     if (atomic_cmpxchg(&phba->dbg_log_dmping, 0, 1) != 0)
         return;
 
     start_idx = (unsigned int)atomic_read(&phba->dbg_log_idx) % DBG_LOG_SZ;
     dbg_cnt = (unsigned int)atomic_read(&phba->dbg_log_cnt);
     if (!dbg_cnt)
         goto out;
     temp_idx = start_idx;
     if (dbg_cnt >= DBG_LOG_SZ) {
         dbg_cnt = DBG_LOG_SZ;
         temp_idx -= 1;
     } else {
         if ((start_idx + dbg_cnt) > (DBG_LOG_SZ - 1)) {
             temp_idx = (start_idx + dbg_cnt) % DBG_LOG_SZ;
         } else {
             if (start_idx < dbg_cnt)
                 start_idx = DBG_LOG_SZ - (dbg_cnt - start_idx);
             else
                 start_idx -= dbg_cnt;
         }
     }
     dev_info(&phba->pcidev->dev, "start %d end %d cnt %d\n",
          start_idx, temp_idx, dbg_cnt);
 
     for (i = 0; i < dbg_cnt; i++) {
         if ((start_idx + i) < DBG_LOG_SZ)
             temp_idx = (start_idx + i) % DBG_LOG_SZ;
         else
             temp_idx = j++;
         rem_nsec = do_div(phba->dbg_log[temp_idx].t_ns, NSEC_PER_SEC);
         dev_info(&phba->pcidev->dev, "%d: [%5lu.%06lu] %s",
              temp_idx,
              (unsigned long)phba->dbg_log[temp_idx].t_ns,
              rem_nsec / 1000,
              phba->dbg_log[temp_idx].log);
     }
 out:
     atomic_set(&phba->dbg_log_cnt, 0);
     atomic_set(&phba->dbg_log_dmping, 0);
 }
 
 __printf(2, 3)
 void lpfc_dbg_print(struct lpfc_hba *phba, const char *fmt, ...)
 {
     unsigned int idx;
     va_list args;
     int dbg_dmping = atomic_read(&phba->dbg_log_dmping);
     struct va_format vaf;
 
 
     va_start(args, fmt);
     if (unlikely(dbg_dmping)) {
         vaf.fmt = fmt;
         vaf.va = &args;
         dev_info(&phba->pcidev->dev, "%pV", &vaf);
         va_end(args);
         return;
     }
     idx = (unsigned int)atomic_fetch_add(1, &phba->dbg_log_idx) %
         DBG_LOG_SZ;
 
     atomic_inc(&phba->dbg_log_cnt);
 
     vscnprintf(phba->dbg_log[idx].log,
            sizeof(phba->dbg_log[idx].log), fmt, args);
     va_end(args);
 
     phba->dbg_log[idx].t_ns = local_clock();
 }
 
 /**
  * lpfc_exit - lpfc module removal routine
  *
  * This routine is invoked when the lpfc module is removed from the kernel.
  * The special kernel macro module_exit() is used to indicate the role of
  * this routine to the kernel as lpfc module exit point.
  */
 static void __exit
 lpfc_exit(void)
 {
     misc_deregister(&lpfc_mgmt_dev);
     pci_unregister_driver(&lpfc_driver);
     cpuhp_remove_multi_state(lpfc_cpuhp_state);
     fc_release_transport(lpfc_transport_template);
     fc_release_transport(lpfc_vport_transport_template);
     idr_destroy(&lpfc_hba_index);
 }
 
 module_init(lpfc_init);
 module_exit(lpfc_exit);
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION(LPFC_MODULE_DESC);
 MODULE_AUTHOR("Broadcom");
 MODULE_VERSION("0:" LPFC_DRIVER_VERSION);