Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm

[linux-2.6] / drivers / scsi / lpfc / lpfc_init.c

/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
 * Fibre Channel Host Bus Adapters.                                *
 * Copyright (C) 2004-2008 Emulex.  All rights reserved.           *
 * EMULEX and SLI are trademarks of Emulex.                        *
 * www.emulex.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/kthread.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/ctype.h>

#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>

#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_nl.h"
#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
#include "lpfc_vport.h"
#include "lpfc_version.h"

char *_dump_buf_data;
unsigned long _dump_buf_data_order;
char *_dump_buf_dif;
unsigned long _dump_buf_dif_order;
spinlock_t _dump_buf_lock;

static int lpfc_parse_vpd(struct lpfc_hba *, uint8_t *, int);
static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
static int lpfc_post_rcv_buf(struct lpfc_hba *);

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);

/**
 * 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->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_MBOX,
                                        "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));
        }

        phba->sli3_options = 0x0;

        /* 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_INIT,
                                "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_INIT,
                                "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);
                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;
                }
                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->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: Completion handler for dump memory mailbox
 *     command used for getting wake up parameters.
 * @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->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->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))
                sprintf(phba->OptionROMVersion, "%d.%d%d",
                        prg->ver, prg->rev, prg->lev);
        else
                sprintf(phba->OptionROMVersion, "%d.%d%d%c%d",
                        prg->ver, prg->rev, prg->lev,
                        dist, prg->num);
        mempool_free(pmboxq, phba->mbox_mem_pool);
        return;
}

/**
 * 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;
        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->mb;

        /* Get login parameters for NID.  */
        lpfc_read_sparam(phba, pmb, 0);
        pmb->vport = vport;
        if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                                "0448 Adapter failed init, mbxCmd x%x "
                                "READ_SPARM mbxStatus x%x\n",
                                mb->mbxCommand, mb->mbxStatus);
                phba->link_state = LPFC_HBA_ERROR;
                mp = (struct lpfc_dmabuf *) pmb->context1;
                mempool_free( pmb, phba->mbox_mem_pool);
                lpfc_mbuf_free(phba, mp->virt, mp->phys);
                kfree(mp);
                return -EIO;
        }

        mp = (struct lpfc_dmabuf *) pmb->context1;

        memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
        lpfc_mbuf_free(phba, mp->virt, mp->phys);
        kfree(mp);
        pmb->context1 = NULL;

        if (phba->cfg_soft_wwnn)
                u64_to_wwn(phba->cfg_soft_wwnn,
                           vport->fc_sparam.nodeName.u.wwn);
        if (phba->cfg_soft_wwpn)
                u64_to_wwn(phba->cfg_soft_wwpn,
                           vport->fc_sparam.portName.u.wwn);
        memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
               sizeof (struct lpfc_name));
        memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
               sizeof (struct lpfc_name));
        /* 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_INIT,
                                "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;
        }

        /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
        if (phba->cfg_hba_queue_depth > (mb->un.varRdConfig.max_xri+1))
                phba->cfg_hba_queue_depth =
                        mb->un.varRdConfig.max_xri + 1;

        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);

        if ((phba->cfg_link_speed > LINK_SPEED_10G)
            || ((phba->cfg_link_speed == LINK_SPEED_1G)
                && !(phba->lmt & LMT_1Gb))
            || ((phba->cfg_link_speed == LINK_SPEED_2G)
                && !(phba->lmt & LMT_2Gb))
            || ((phba->cfg_link_speed == LINK_SPEED_4G)
                && !(phba->lmt & LMT_4Gb))
            || ((phba->cfg_link_speed == LINK_SPEED_8G)
                && !(phba->lmt & LMT_8Gb))
            || ((phba->cfg_link_speed == LINK_SPEED_10G)
                && !(phba->lmt & LMT_10Gb))) {
                /* Reset link speed to auto */
                lpfc_printf_log(phba, KERN_WARNING, LOG_LINK_EVENT,
                        "1302 Invalid speed for this board: "
                        "Reset link speed to auto: x%x\n",
                        phba->cfg_link_speed);
                        phba->cfg_link_speed = LINK_SPEED_AUTO;
        }

        phba->link_state = LPFC_LINK_DOWN;

        /* Only process IOCBs on ELS ring till hba_state is READY */
        if (psli->ring[psli->extra_ring].cmdringaddr)
                psli->ring[psli->extra_ring].flag |= LPFC_STOP_IOCB_EVENT;
        if (psli->ring[psli->fcp_ring].cmdringaddr)
                psli->ring[psli->fcp_ring].flag |= LPFC_STOP_IOCB_EVENT;
        if (psli->ring[psli->next_ring].cmdringaddr)
                psli->ring[psli->next_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_MBOX,
                                        "0352 Config MSI mailbox command "
                                        "failed, mbxCmd x%x, mbxStatus x%x\n",
                                        pmb->mb.mbxCommand, pmb->mb.mbxStatus);
                        mempool_free(pmb, phba->mbox_mem_pool);
                        return -EIO;
                }
        }

        /* Initialize ERATT handling flag */
        phba->hba_flag &= ~HBA_ERATT_HANDLED;

        /* Enable appropriate host interrupts */
        spin_lock_irq(&phba->hbalock);
        status = readl(phba->HCregaddr);
        status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
        if (psli->num_rings > 0)
                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 + HZ * timeout);
        /* Set up heart beat (HB) timer */
        mod_timer(&phba->hb_tmofunc, jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
        phba->hb_outstanding = 0;
        phba->last_completion_time = jiffies;
        /* Set up error attention (ERATT) polling timer */
        mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL);

        lpfc_init_link(phba, pmb, phba->cfg_topology, phba->cfg_link_speed);
        pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
        lpfc_set_loopback_flag(phba);
        rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
        if (rc != MBX_SUCCESS) {
                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                                "0454 Adapter failed to init, mbxCmd x%x "
                                "INIT_LINK, mbxStatus x%x\n",
                                mb->mbxCommand, mb->mbxStatus);

                /* 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)
                        mempool_free(pmb, phba->mbox_mem_pool);
                return -EIO;
        }
        /* MBOX buffer will be freed in mbox compl */
        pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
        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_INIT,
                                "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);
        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_INIT, "0435 Adapter failed "
                                "to get Option ROM version status x%x\n.", rc);
                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;
        /* 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_vpi && vports[i] != NULL; i++)
                                lpfc_cleanup_discovery_resources(vports[i]);
                lpfc_destroy_vport_work_array(phba, vports);
        }
        return 0;
}

/**
 * lpfc_hba_down_post: 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 - sucess.
 *   Any other value - error.
 **/
int
lpfc_hba_down_post(struct lpfc_hba *phba)
{
        struct lpfc_sli *psli = &phba->sli;
        struct lpfc_sli_ring *pring;
        struct lpfc_dmabuf *mp, *next_mp;
        struct lpfc_iocbq *iocb;
        IOCB_t *cmd = NULL;
        LIST_HEAD(completions);
        int i;

        if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
                lpfc_sli_hbqbuf_free_all(phba);
        else {
                /* Cleanup preposted buffers on the ELS ring */
                pring = &psli->ring[LPFC_ELS_RING];
                list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
                        list_del(&mp->list);
                        pring->postbufq_cnt--;
                        lpfc_mbuf_free(phba, mp->virt, mp->phys);
                        kfree(mp);
                }
        }

        spin_lock_irq(&phba->hbalock);
        for (i = 0; i < psli->num_rings; i++) {
                pring = &psli->ring[i];

                /* At this point in time the HBA is either reset or DOA. Either
                 * way, 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);

                while (!list_empty(&completions)) {
                        iocb = list_get_first(&completions, struct lpfc_iocbq,
                                list);
                        cmd = &iocb->iocb;
                        list_del_init(&iocb->list);

                        if (!iocb->iocb_cmpl)
                                lpfc_sli_release_iocbq(phba, iocb);
                        else {
                                cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
                                cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
                                (iocb->iocb_cmpl) (phba, iocb, iocb);
                        }
                }

                lpfc_sli_abort_iocb_ring(phba, pring);
                spin_lock_irq(&phba->hbalock);
        }
        spin_unlock_irq(&phba->hbalock);

        return 0;
}

/**
 * lpfc_hb_timeout: The HBA-timer timeout handler.
 * @ptr: unsigned long holds 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(unsigned long ptr)
{
        struct lpfc_hba *phba;
        uint32_t tmo_posted;
        unsigned long iflag;

        phba = (struct lpfc_hba *)ptr;

        /* 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_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->hb_outstanding = 0;
        spin_unlock_irqrestore(&phba->hbalock, drvr_flag);

        /* Check and reset heart-beat timer is 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 + HZ * LPFC_HB_MBOX_INTERVAL);
        return;
}

/**
 * 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)
{
        LPFC_MBOXQ_t *pmboxq;
        struct lpfc_dmabuf *buf_ptr;
        int retval;
        struct lpfc_sli *psli = &phba->sli;
        LIST_HEAD(completions);

        if ((phba->link_state == LPFC_HBA_ERROR) ||
                (phba->pport->load_flag & FC_UNLOADING) ||
                (phba->pport->fc_flag & FC_OFFLINE_MODE))
                return;

        spin_lock_irq(&phba->pport->work_port_lock);

        if (time_after(phba->last_completion_time + LPFC_HB_MBOX_INTERVAL * HZ,
                jiffies)) {
                spin_unlock_irq(&phba->pport->work_port_lock);
                if (!phba->hb_outstanding)
                        mod_timer(&phba->hb_tmofunc,
                                jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
                else
                        mod_timer(&phba->hb_tmofunc,
                                jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
                return;
        }
        spin_unlock_irq(&phba->pport->work_port_lock);

        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 (!phba->hb_outstanding) {
                        pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
                        if (!pmboxq) {
                                mod_timer(&phba->hb_tmofunc,
                                          jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
                                return;
                        }

                        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);
                                mod_timer(&phba->hb_tmofunc,
                                          jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
                                return;
                        }
                        mod_timer(&phba->hb_tmofunc,
                                  jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
                        phba->hb_outstanding = 1;
                        return;
                } else {
                        /*
                        * If heart beat timeout called with hb_outstanding set
                        * we need to take the HBA offline.
                        */
                        lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                                        "0459 Adapter heartbeat failure, "
                                        "taking this port offline.\n");

                        spin_lock_irq(&phba->hbalock);
                        psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
                        spin_unlock_irq(&phba->hbalock);

                        lpfc_offline_prep(phba);
                        lpfc_offline(phba);
                        lpfc_unblock_mgmt_io(phba);
                        phba->link_state = LPFC_HBA_ERROR;
                        lpfc_hba_down_post(phba);
                }
        }
}

/**
 * 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_SLI2_ACTIVE;
        spin_unlock_irq(&phba->hbalock);
        lpfc_offline_prep(phba);

        lpfc_offline(phba);
        lpfc_reset_barrier(phba);
        lpfc_sli_brdreset(phba);
        lpfc_hba_down_post(phba);
        lpfc_sli_brdready(phba, HS_MBRDY);
        lpfc_unblock_mgmt_io(phba);
        phba->link_state = LPFC_HBA_ERROR;
        return;
}

/**
 * lpfc_handle_eratt: The 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
 **/
void
lpfc_handle_eratt(struct lpfc_hba *phba)
{
        struct lpfc_vport *vport = phba->pport;
        struct lpfc_sli   *psli = &phba->sli;
        struct lpfc_sli_ring  *pring;
        uint32_t event_data;
        unsigned long temperature;
        struct temp_event temp_event_data;
        struct Scsi_Host  *shost;
        struct lpfc_board_event_header board_event;

        /* If the pci channel is offline, ignore possible errors,
         * since we cannot communicate with the pci card anyway. */
        if (pci_channel_offline(phba->pcidev))
                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 */
        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);

        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]);

                spin_lock_irq(&phba->hbalock);
                psli->sli_flag &= ~LPFC_SLI2_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.
                */
                pring = &psli->ring[psli->fcp_ring];
                lpfc_sli_abort_iocb_ring(phba, pring);

                /*
                 * There was a firmware error.  Take the hba offline and then
                 * attempt to restart it.
                 */
                lpfc_offline_prep(phba);
                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_INIT,
                                "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_INIT,
                                "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_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.
 **/
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;
        struct lpfc_dmabuf *mp;
        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;
        }

        mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
        if (!mp) {
                rc = 2;
                goto lpfc_handle_latt_free_pmb;
        }

        mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
        if (!mp->virt) {
                rc = 3;
                goto lpfc_handle_latt_free_mp;
        }

        /* Cleanup any outstanding ELS commands */
        lpfc_els_flush_all_cmd(phba);

        psli->slistat.link_event++;
        lpfc_read_la(phba, pmb, mp);
        pmb->mbox_cmpl = lpfc_mbx_cmpl_read_la;
        pmb->vport = vport;
        /* Block ELS IOCBs until we have processed this mbox command */
        phba->sli.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.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
        lpfc_mbuf_free(phba, mp->virt, mp->phys);
lpfc_handle_latt_free_mp:
        kfree(mp);
lpfc_handle_latt_free_pmb:
        mempool_free(pmb, phba->mbox_mem_pool);
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_MBOX,
                     "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
 **/
static 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--) {
                                phba->Port[j++] = vpd[index++];
                                if (j == 19)
                                        break;
                                }
                                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_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;
        struct {
                char * name;
                int    max_speed;
                char * bus;
        } m = {"<Unknown>", 0, ""};

        if (mdp && mdp[0] != '\0'
                && descp && descp[0] != '\0')
                return;

        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
                max_speed = 1;

        vp = &phba->vpd;

        switch (dev_id) {
        case PCI_DEVICE_ID_FIREFLY:
                m = (typeof(m)){"LP6000", max_speed, "PCI"};
                break;
        case PCI_DEVICE_ID_SUPERFLY:
                if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)
                        m = (typeof(m)){"LP7000", max_speed,  "PCI"};
                else
                        m = (typeof(m)){"LP7000E", max_speed, "PCI"};
                break;
        case PCI_DEVICE_ID_DRAGONFLY:
                m = (typeof(m)){"LP8000", max_speed, "PCI"};
                break;
        case PCI_DEVICE_ID_CENTAUR:
                if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID)
                        m = (typeof(m)){"LP9002", max_speed, "PCI"};
                else
                        m = (typeof(m)){"LP9000", max_speed, "PCI"};
                break;
        case PCI_DEVICE_ID_RFLY:
                m = (typeof(m)){"LP952", max_speed, "PCI"};
                break;
        case PCI_DEVICE_ID_PEGASUS:
                m = (typeof(m)){"LP9802", max_speed, "PCI-X"};
                break;
        case PCI_DEVICE_ID_THOR:
                m = (typeof(m)){"LP10000", max_speed, "PCI-X"};
                break;
        case PCI_DEVICE_ID_VIPER:
                m = (typeof(m)){"LPX1000", max_speed,  "PCI-X"};
                break;
        case PCI_DEVICE_ID_PFLY:
                m = (typeof(m)){"LP982", max_speed, "PCI-X"};
                break;
        case PCI_DEVICE_ID_TFLY:
                m = (typeof(m)){"LP1050", max_speed, "PCI-X"};
                break;
        case PCI_DEVICE_ID_HELIOS:
                m = (typeof(m)){"LP11000", max_speed, "PCI-X2"};
                break;
        case PCI_DEVICE_ID_HELIOS_SCSP:
                m = (typeof(m)){"LP11000-SP", max_speed, "PCI-X2"};
                break;
        case PCI_DEVICE_ID_HELIOS_DCSP:
                m = (typeof(m)){"LP11002-SP", max_speed, "PCI-X2"};
                break;
        case PCI_DEVICE_ID_NEPTUNE:
                m = (typeof(m)){"LPe1000", max_speed, "PCIe"};
                break;
        case PCI_DEVICE_ID_NEPTUNE_SCSP:
                m = (typeof(m)){"LPe1000-SP", max_speed, "PCIe"};
                break;
        case PCI_DEVICE_ID_NEPTUNE_DCSP:
                m = (typeof(m)){"LPe1002-SP", max_speed, "PCIe"};
                break;
        case PCI_DEVICE_ID_BMID:
                m = (typeof(m)){"LP1150", max_speed, "PCI-X2"};
                break;
        case PCI_DEVICE_ID_BSMB:
                m = (typeof(m)){"LP111", max_speed, "PCI-X2"};
                break;
        case PCI_DEVICE_ID_ZEPHYR:
                m = (typeof(m)){"LPe11000", max_speed, "PCIe"};
                break;
        case PCI_DEVICE_ID_ZEPHYR_SCSP:
                m = (typeof(m)){"LPe11000", max_speed, "PCIe"};
                break;
        case PCI_DEVICE_ID_ZEPHYR_DCSP:
                m = (typeof(m)){"LPe11002-SP", max_speed, "PCIe"};
                break;
        case PCI_DEVICE_ID_ZMID:
                m = (typeof(m)){"LPe1150", max_speed, "PCIe"};
                break;
        case PCI_DEVICE_ID_ZSMB:
                m = (typeof(m)){"LPe111", max_speed, "PCIe"};
                break;
        case PCI_DEVICE_ID_LP101:
                m = (typeof(m)){"LP101", max_speed, "PCI-X"};
                break;
        case PCI_DEVICE_ID_LP10000S:
                m = (typeof(m)){"LP10000-S", max_speed, "PCI"};
                break;
        case PCI_DEVICE_ID_LP11000S:
                m = (typeof(m)){"LP11000-S", max_speed,
                        "PCI-X2"};
                break;
        case PCI_DEVICE_ID_LPE11000S:
                m = (typeof(m)){"LPe11000-S", max_speed,
                        "PCIe"};
                break;
        case PCI_DEVICE_ID_SAT:
                m = (typeof(m)){"LPe12000", max_speed, "PCIe"};
                break;
        case PCI_DEVICE_ID_SAT_MID:
                m = (typeof(m)){"LPe1250", max_speed, "PCIe"};
                break;
        case PCI_DEVICE_ID_SAT_SMB:
                m = (typeof(m)){"LPe121", max_speed, "PCIe"};
                break;
        case PCI_DEVICE_ID_SAT_DCSP:
                m = (typeof(m)){"LPe12002-SP", max_speed, "PCIe"};
                break;
        case PCI_DEVICE_ID_SAT_SCSP:
                m = (typeof(m)){"LPe12000-SP", max_speed, "PCIe"};
                break;
        case PCI_DEVICE_ID_SAT_S:
                m = (typeof(m)){"LPe12000-S", max_speed, "PCIe"};
                break;
        case PCI_DEVICE_ID_HORNET:
                m = (typeof(m)){"LP21000", max_speed, "PCIe"};
                GE = 1;
                break;
        case PCI_DEVICE_ID_PROTEUS_VF:
                m = (typeof(m)) {"LPev12000", max_speed, "PCIe IOV"};
                break;
        case PCI_DEVICE_ID_PROTEUS_PF:
                m = (typeof(m)) {"LPev12000", max_speed, "PCIe IOV"};
                break;
        case PCI_DEVICE_ID_PROTEUS_S:
                m = (typeof(m)) {"LPemv12002-S", max_speed, "PCIe IOV"};
                break;
        default:
                m = (typeof(m)){ NULL };
                break;
        }

        if (mdp && mdp[0] == '\0')
                snprintf(mdp, 79,"%s", m.name);
        if (descp && descp[0] == '\0')
                snprintf(descp, 255,
                        "Emulex %s %d%s %s %s",
                        m.name, m.max_speed,
                        (GE) ? "GE" : "Gb",
                        m.bus,
                        (GE) ? "FCoE Adapter" : "Fibre Channel Adapter");
}

/**
 * lpfc_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_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, 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.
 *
 * 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_post_buffer(phba, &psli->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);

        list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
                if (!NLP_CHK_NODE_ACT(ndlp)) {
                        ndlp = lpfc_enable_node(vport, ndlp,
                                                NLP_STE_UNUSED_NODE);
                        if (!ndlp)
                                continue;
                        spin_lock_irq(&phba->ndlp_lock);
                        NLP_SET_FREE_REQ(ndlp);
                        spin_unlock_irq(&phba->ndlp_lock);
                        /* Trigger the release of the ndlp memory */
                        lpfc_nlp_put(ndlp);
                        continue;
                }
                spin_lock_irq(&phba->ndlp_lock);
                if (NLP_CHK_FREE_REQ(ndlp)) {
                        /* The ndlp should not be in memory free mode already */
                        spin_unlock_irq(&phba->ndlp_lock);
                        continue;
                } else
                        /* Indicate request for freeing ndlp memory */
                        NLP_SET_FREE_REQ(ndlp);
                spin_unlock_irq(&phba->ndlp_lock);

                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_type & NLP_FABRIC)
                        lpfc_disc_state_machine(vport, ndlp, NULL,
                                        NLP_EVT_DEVICE_RECOVERY);

                lpfc_disc_state_machine(vport, ndlp, NULL,
                                             NLP_EVT_DEVICE_RM);

        }

        /* 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_DISCOVERY,
                                "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_NODE,
                                                "0282 did:x%x ndlp:x%p "
                                                "usgmap:x%x refcnt:%d\n",
                                                ndlp->nlp_DID, (void *)ndlp,
                                                ndlp->nlp_usg_map,
                                                atomic_read(
                                                        &ndlp->kref.refcount));
                        }
                        break;
                }

                /* Wait for any activity on ndlps to settle */
                msleep(10);
        }
        return;
}

/**
 * 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->fc_fdmitmo);
        lpfc_can_disctmo(vport);
        return;
}

/**
 * lpfc_stop_phba_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.
 **/
static void
lpfc_stop_phba_timers(struct lpfc_hba *phba)
{
        del_timer_sync(&phba->fcp_poll_timer);
        lpfc_stop_vport_timers(phba->pport);
        del_timer_sync(&phba->sli.mbox_tmo);
        del_timer_sync(&phba->fabric_block_timer);
        phba->hb_outstanding = 0;
        del_timer_sync(&phba->hb_tmofunc);
        del_timer_sync(&phba->eratt_poll);
        return;
}

/**
 * lpfc_block_mgmt_io: Mark a HBA's management interface as blocked.
 * @phba: pointer to lpfc hba data structure.
 *
 * 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)
{
        unsigned long iflag;

        spin_lock_irqsave(&phba->hbalock, iflag);
        phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
        spin_unlock_irqrestore(&phba->hbalock, iflag);
}

/**
 * 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;

        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);

        if (!lpfc_sli_queue_setup(phba)) {
                lpfc_unblock_mgmt_io(phba);
                return 1;
        }

        if (lpfc_sli_hba_setup(phba)) { /* Initialize the HBA */
                lpfc_unblock_mgmt_io(phba);
                return 1;
        }

        vports = lpfc_create_vport_work_array(phba);
        if (vports != NULL)
                for(i = 0; i <= phba->max_vpi && 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;
                        spin_unlock_irq(shost->host_lock);
                }
                lpfc_destroy_vport_work_array(phba, vports);

        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.
 *
 * 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)
{
        struct lpfc_vport *vport = phba->pport;
        struct lpfc_nodelist  *ndlp, *next_ndlp;
        struct lpfc_vport **vports;
        int i;

        if (vport->fc_flag & FC_OFFLINE_MODE)
                return;

        lpfc_block_mgmt_io(phba);

        lpfc_linkdown(phba);

        /* 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_vpi && vports[i] != NULL; i++) {
                        struct Scsi_Host *shost;

                        if (vports[i]->load_flag & FC_UNLOADING)
                                continue;
                        shost = lpfc_shost_from_vport(vports[i]);
                        list_for_each_entry_safe(ndlp, next_ndlp,
                                                 &vports[i]->fc_nodes,
                                                 nlp_listp) {
                                if (!NLP_CHK_NODE_ACT(ndlp))
                                        continue;
                                if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
                                        continue;
                                if (ndlp->nlp_type & NLP_FABRIC) {
                                        lpfc_disc_state_machine(vports[i], ndlp,
                                                NULL, NLP_EVT_DEVICE_RECOVERY);
                                        lpfc_disc_state_machine(vports[i], ndlp,
                                                NULL, NLP_EVT_DEVICE_RM);
                                }
                                spin_lock_irq(shost->host_lock);
                                ndlp->nlp_flag &= ~NLP_NPR_ADISC;
                                spin_unlock_irq(shost->host_lock);
                                lpfc_unreg_rpi(vports[i], ndlp);
                        }
                }
        }
        lpfc_destroy_vport_work_array(phba, vports);

        lpfc_sli_flush_mbox_queue(phba);
}

/**
 * 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 all timers associated with this hba */
        lpfc_stop_phba_timers(phba);
        vports = lpfc_create_vport_work_array(phba);
        if (vports != NULL)
                for(i = 0; i <= phba->max_vpi && 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_vpi && 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);
}

/**
 * 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.
 *
 * Return codes
 *   0 - successful (for now, it always returns 0)
 **/
static int
lpfc_scsi_free(struct lpfc_hba *phba)
{
        struct lpfc_scsi_buf *sb, *sb_next;
        struct lpfc_iocbq *io, *io_next;

        spin_lock_irq(&phba->hbalock);
        /* Release all the lpfc_scsi_bufs maintained by this host. */
        list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list, list) {
                list_del(&sb->list);
                pci_pool_free(phba->lpfc_scsi_dma_buf_pool, sb->data,
                              sb->dma_handle);
                kfree(sb);
                phba->total_scsi_bufs--;
        }

        /* Release all the lpfc_iocbq entries maintained by this host. */
        list_for_each_entry_safe(io, io_next, &phba->lpfc_iocb_list, list) {
                list_del(&io->list);
                kfree(io);
                phba->total_iocbq_bufs--;
        }

        spin_unlock_irq(&phba->hbalock);

        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;
        int error = 0;

        if (dev != &phba->pcidev->dev)
                shost = scsi_host_alloc(&lpfc_vport_template,
                                        sizeof(struct lpfc_vport));
        else
                shost = scsi_host_alloc(&lpfc_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);
        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;

        /*
         * 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;
        }

        /* Initialize all internally managed lists. */
        INIT_LIST_HEAD(&vport->fc_nodes);
        spin_lock_init(&vport->work_port_lock);

        init_timer(&vport->fc_disctmo);
        vport->fc_disctmo.function = lpfc_disc_timeout;
        vport->fc_disctmo.data = (unsigned long)vport;

        init_timer(&vport->fc_fdmitmo);
        vport->fc_fdmitmo.function = lpfc_fdmi_tmo;
        vport->fc_fdmitmo.data = (unsigned long)vport;

        init_timer(&vport->els_tmofunc);
        vport->els_tmofunc.function = lpfc_els_timeout;
        vport->els_tmofunc.data = (unsigned long)vport;

        error = scsi_add_host(shost, dev);
        if (error)
                goto out_put_shost;

        spin_lock_irq(&phba->hbalock);
        list_add_tail(&vport->listentry, &phba->port_list);
        spin_unlock_irq(&phba->hbalock);
        return vport;

out_put_shost:
        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->hbalock);
        list_del_init(&vport->listentry);
        spin_unlock_irq(&phba->hbalock);

        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 instance = 0;

        /* Assign an unused number */
        if (!idr_pre_get(&lpfc_hba_index, GFP_KERNEL))
                return -1;
        if (idr_get_new(&lpfc_hba_index, NULL, &instance))
                return -1;
        return instance;
}

/**
 * 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 >= 30 * HZ) {
                lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                                "0461 Scanning longer than 30 "
                                "seconds.  Continuing initialization\n");
                stat = 1;
                goto finished;
        }
        if (time >= 15 * HZ && 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 < 2 * HZ)
                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;
}

/**
 * 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));

        fc_host_supported_speeds(shost) = 0;
        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;

        fc_host_maxframe_size(shost) =
                (((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
                (uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;

        /* 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_enable_msix: Enable MSI-X interrupt mode.
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine is invoked to enable the MSI-X interrupt vectors. The kernel
 * function pci_enable_msix() is called to enable the MSI-X vectors. Note that
 * pci_enable_msix(), once invoked, enables either all or nothing, depending
 * on the current availability of PCI vector resources. The device driver is
 * responsible for calling the individual request_irq() to register each MSI-X
 * vector with a interrupt handler, which is done in this function. Note that
 * later when device is unloading, the driver should always call free_irq()
 * on all MSI-X vectors it has done request_irq() on before calling
 * pci_disable_msix(). Failure to do so results in a BUG_ON() and a device
 * will be left with MSI-X enabled and leaks its vectors.
 *
 * Return codes
 *   0 - sucessful
 *   other values - error
 **/
static int
lpfc_enable_msix(struct lpfc_hba *phba)
{
        int rc, i;
        LPFC_MBOXQ_t *pmb;

        /* Set up MSI-X multi-message vectors */
        for (i = 0; i < LPFC_MSIX_VECTORS; i++)
                phba->msix_entries[i].entry = i;

        /* Configure MSI-X capability structure */
        rc = pci_enable_msix(phba->pcidev, phba->msix_entries,
                                ARRAY_SIZE(phba->msix_entries));
        if (rc) {
                lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                                "0420 PCI enable MSI-X failed (%d)\n", rc);
                goto msi_fail_out;
        } else
                for (i = 0; i < LPFC_MSIX_VECTORS; i++)
                        lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                                        "0477 MSI-X entry[%d]: vector=x%x "
                                        "message=%d\n", i,
                                        phba->msix_entries[i].vector,
                                        phba->msix_entries[i].entry);
        /*
         * Assign MSI-X vectors to interrupt handlers
         */

        /* vector-0 is associated to slow-path handler */
        rc = request_irq(phba->msix_entries[0].vector, &lpfc_sp_intr_handler,
                         IRQF_SHARED, 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(phba->msix_entries[1].vector, &lpfc_fp_intr_handler,
                         IRQF_SHARED, 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_INIT,
                                "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->mb.mbxCommand, pmb->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(phba->msix_entries[1].vector, phba);

irq_fail_out:
        /* free the irq already requested */
        free_irq(phba->msix_entries[0].vector, phba);

msi_fail_out:
        /* Unconfigure MSI-X capability structure */
        pci_disable_msix(phba->pcidev);
        return rc;
}

/**
 * lpfc_disable_msix: Disable MSI-X interrupt mode.
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine is invoked to release the MSI-X vectors and then disable the
 * MSI-X interrupt mode.
 **/
static void
lpfc_disable_msix(struct lpfc_hba *phba)
{
        int i;

        /* Free up MSI-X multi-message vectors */
        for (i = 0; i < LPFC_MSIX_VECTORS; i++)
                free_irq(phba->msix_entries[i].vector, phba);
        /* Disable MSI-X */
        pci_disable_msix(phba->pcidev);
}

/**
 * lpfc_enable_msi: Enable MSI interrupt mode.
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine is invoked to enable the MSI interrupt mode. 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 - sucessful
 *      other values - error
 */
static int
lpfc_enable_msi(struct lpfc_hba *phba)
{
        int rc;

        rc = pci_enable_msi(phba->pcidev);
        if (!rc)
                lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                                "0462 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_intr_handler,
                         IRQF_SHARED, 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_disable_msi: Disable MSI interrupt mode.
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine is invoked to disable the MSI interrupt mode. The driver
 * calls free_irq() on MSI vector it has done request_irq() on before
 * calling pci_disable_msi(). Failure to do so results in a BUG_ON() and
 * a device will be left with MSI enabled and leaks its vector.
 */

static void
lpfc_disable_msi(struct lpfc_hba *phba)
{
        free_irq(phba->pcidev->irq, phba);
        pci_disable_msi(phba->pcidev);
        return;
}

/**
 * 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_INIT,
                                "0482 Illegal interrupt mode.\n");
                break;
        }
        return;
}

static void
lpfc_stop_port(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_phba_timers(phba);
        phba->pport->work_port_events = 0;

        return;
}

/**
 * lpfc_enable_intr: Enable device interrupt.
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine is invoked to enable device interrupt and associate driver's
 * interrupt handler(s) to interrupt vector(s). 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 - sucessful
 *   other values - error
 **/
static uint32_t
lpfc_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
{
        uint32_t intr_mode = LPFC_INTR_ERROR;
        int retval;

        if (cfg_mode == 2) {
                /* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
                retval = lpfc_sli_config_port(phba, 3);
                if (!retval) {
                        /* Now, try to enable MSI-X interrupt mode */
                        retval = lpfc_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_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_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_disable_intr: Disable device interrupt.
 * @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). Depending on the
 * interrupt mode, the driver will release the interrupt vector(s) for the
 * message signaled interrupt.
 **/
static void
lpfc_disable_intr(struct lpfc_hba *phba)
{
        /* Disable the currently initialized interrupt mode */
        if (phba->intr_type == MSIX)
                lpfc_disable_msix(phba);
        else if (phba->intr_type == MSI)
                lpfc_disable_msi(phba);
        else if (phba->intr_type == INTx)
                free_irq(phba->pcidev->irq, phba);

        /* Reset interrupt management states */
        phba->intr_type = NONE;
        phba->sli.slistat.sli_intr = 0;

        return;
}

/**
 * lpfc_pci_probe_one: lpfc PCI probe func to register device 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 is presented in 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 __devinit
lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
{
        struct lpfc_vport *vport = NULL;
        struct lpfc_hba   *phba;
        struct lpfc_sli   *psli;
        struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
        struct Scsi_Host  *shost = NULL;
        void *ptr;
        unsigned long bar0map_len, bar2map_len;
        int error = -ENODEV, retval;
        int  i, hbq_count;
        uint16_t iotag;
        uint32_t cfg_mode, intr_mode;
        int bars = pci_select_bars(pdev, IORESOURCE_MEM);
        struct lpfc_adapter_event_header adapter_event;

        if (pci_enable_device_mem(pdev))
                goto out;
        if (pci_request_selected_regions(pdev, bars, LPFC_DRIVER_NAME))
                goto out_disable_device;

        phba = kzalloc(sizeof (struct lpfc_hba), GFP_KERNEL);
        if (!phba)
                goto out_release_regions;

        atomic_set(&phba->fast_event_count, 0);
        spin_lock_init(&phba->hbalock);

        /* Initialize ndlp management spinlock */
        spin_lock_init(&phba->ndlp_lock);

        phba->pcidev = pdev;

        /* Assign an unused board number */
        if ((phba->brd_no = lpfc_get_instance()) < 0)
                goto out_free_phba;

        INIT_LIST_HEAD(&phba->port_list);
        init_waitqueue_head(&phba->wait_4_mlo_m_q);
        /*
         * Get all the module params for configuring this host and then
         * establish the host.
         */
        lpfc_get_cfgparam(phba);
        phba->max_vpi = LPFC_MAX_VPI;

        /* Initialize timers used by driver */
        init_timer(&phba->hb_tmofunc);
        phba->hb_tmofunc.function = lpfc_hb_timeout;
        phba->hb_tmofunc.data = (unsigned long)phba;

        psli = &phba->sli;
        init_timer(&psli->mbox_tmo);
        psli->mbox_tmo.function = lpfc_mbox_timeout;
        psli->mbox_tmo.data = (unsigned long) phba;
        init_timer(&phba->fcp_poll_timer);
        phba->fcp_poll_timer.function = lpfc_poll_timeout;
        phba->fcp_poll_timer.data = (unsigned long) phba;
        init_timer(&phba->fabric_block_timer);
        phba->fabric_block_timer.function = lpfc_fabric_block_timeout;
        phba->fabric_block_timer.data = (unsigned long) phba;
        init_timer(&phba->eratt_poll);
        phba->eratt_poll.function = lpfc_poll_eratt;
        phba->eratt_poll.data = (unsigned long) phba;

        pci_set_master(pdev);
        pci_save_state(pdev);
        pci_try_set_mwi(pdev);

        if (pci_set_dma_mask(phba->pcidev, DMA_64BIT_MASK) != 0)
                if (pci_set_dma_mask(phba->pcidev, DMA_32BIT_MASK) != 0)
                        goto out_idr_remove;

        /*
         * Get the bus address of Bar0 and Bar2 and the number of bytes
         * required by each mapping.
         */
        phba->pci_bar0_map = pci_resource_start(phba->pcidev, 0);
        bar0map_len        = pci_resource_len(phba->pcidev, 0);

        phba->pci_bar2_map = pci_resource_start(phba->pcidev, 2);
        bar2map_len        = pci_resource_len(phba->pcidev, 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) {
                error = -ENODEV;
                dev_printk(KERN_ERR, &pdev->dev,
                           "ioremap failed for SLIM memory.\n");
                goto out_idr_remove;
        }

        /* 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) {
                error = -ENODEV;
                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(&phba->pcidev->dev,
                                               SLI2_SLIM_SIZE,
                                               &phba->slim2p.phys,
                                               GFP_KERNEL);
        if (!phba->slim2p.virt)
                goto out_iounmap;

        memset(phba->slim2p.virt, 0, SLI2_SLIM_SIZE);
        phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);
        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(&phba->pcidev->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());

        INIT_LIST_HEAD(&phba->hbqbuf_in_list);

        /* Initialize the SLI Layer to run with lpfc HBAs. */
        lpfc_sli_setup(phba);
        lpfc_sli_queue_setup(phba);

        retval = lpfc_mem_alloc(phba);
        if (retval) {
                error = retval;
                goto out_free_hbqslimp;
        }

        /* Initialize and populate the iocb list per host.  */
        INIT_LIST_HEAD(&phba->lpfc_iocb_list);
        for (i = 0; i < LPFC_IOCB_LIST_CNT; 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, LPFC_IOCB_LIST_CNT);
                        error = -ENOMEM;
                        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__);
                        error = -ENOMEM;
                        goto out_free_iocbq;
                }

                spin_lock_irq(&phba->hbalock);
                list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
                phba->total_iocbq_bufs++;
                spin_unlock_irq(&phba->hbalock);
        }

        /* Initialize HBA 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;

        INIT_LIST_HEAD(&phba->work_list);
        phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);
        phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));

        /* Initialize the wait queue head for the kernel thread */
        init_waitqueue_head(&phba->work_waitq);

        /* 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);
                goto out_free_iocbq;
        }

        /* Initialize the list of scsi buffers used by driver for scsi IO. */
        spin_lock_init(&phba->scsi_buf_list_lock);
        INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list);

        /* Initialize list of fabric iocbs */
        INIT_LIST_HEAD(&phba->fabric_iocb_list);

        /* Initialize list to save ELS buffers */
        INIT_LIST_HEAD(&phba->elsbuf);

        vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
        if (!vport)
                goto out_kthread_stop;

        shost = lpfc_shost_from_vport(vport);
        phba->pport = vport;
        lpfc_debugfs_initialize(vport);

        pci_set_drvdata(pdev, shost);

        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;

        /* Configure sysfs attributes */
        if (lpfc_alloc_sysfs_attr(vport)) {
                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                                "1476 Failed to allocate sysfs attr\n");
                error = -ENOMEM;
                goto out_destroy_port;
        }

        cfg_mode = phba->cfg_use_msi;
        while (true) {
                /* Configure and enable interrupt */
                intr_mode = lpfc_enable_intr(phba, cfg_mode);
                if (intr_mode == LPFC_INTR_ERROR) {
                        lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                                        "0426 Failed to enable interrupt.\n");
                        goto out_free_sysfs_attr;
                }
                /* HBA SLI setup */
                if (lpfc_sli_hba_setup(phba)) {
                        lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                                        "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 received */
                if (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,
                                        "0451 Configure interrupt mode (%d) "
                                        "failed active interrupt test.\n",
                                        intr_mode);
                        if (intr_mode == 0) {
                                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                                                "0479 Failed to enable "
                                                "interrupt.\n");
                                error = -ENODEV;
                                goto out_remove_device;
                        }
                        /* Stop HBA SLI setups */
                        lpfc_stop_port(phba);
                        /* Disable the current interrupt mode */
                        lpfc_disable_intr(phba);
                        /* Try next level of interrupt mode */
                        cfg_mode = --intr_mode;
                }
        }

        /*
         * hba setup may have changed the hba_queue_depth so we need to adjust
         * the value of can_queue.
         */
        shost->can_queue = phba->cfg_hba_queue_depth - 10;
        if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) {

                if (lpfc_prot_mask && lpfc_prot_guard) {
                        lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
                                        "1478 Registering BlockGuard with the "
                                        "SCSI layer\n");

                        scsi_host_set_prot(shost, lpfc_prot_mask);
                        scsi_host_set_guard(shost, lpfc_prot_guard);
                }
        }

        if (!_dump_buf_data) {
                int pagecnt = 10;
                while (pagecnt) {
                        spin_lock_init(&_dump_buf_lock);
                        _dump_buf_data =
                                (char *) __get_free_pages(GFP_KERNEL, pagecnt);
                        if (_dump_buf_data) {
                                printk(KERN_ERR "BLKGRD allocated %d pages for "
                                                "_dump_buf_data at 0x%p\n",
                                                (1 << pagecnt), _dump_buf_data);
                                _dump_buf_data_order = pagecnt;
                                memset(_dump_buf_data, 0, ((1 << PAGE_SHIFT)
                                                           << pagecnt));
                                break;
                        } else {
                                --pagecnt;
                        }

                }

                if (!_dump_buf_data_order)
                        printk(KERN_ERR "BLKGRD ERROR unable to allocate "
                                        "memory for hexdump\n");

        } else {
                printk(KERN_ERR "BLKGRD already allocated _dump_buf_data=0x%p"
                       "\n", _dump_buf_data);
        }


        if (!_dump_buf_dif) {
                int pagecnt = 10;
                while (pagecnt) {
                        _dump_buf_dif =
                                (char *) __get_free_pages(GFP_KERNEL, pagecnt);
                        if (_dump_buf_dif) {
                                printk(KERN_ERR "BLKGRD allocated %d pages for "
                                                "_dump_buf_dif at 0x%p\n",
                                                (1 << pagecnt), _dump_buf_dif);
                                _dump_buf_dif_order = pagecnt;
                                memset(_dump_buf_dif, 0, ((1 << PAGE_SHIFT)
                                                          << pagecnt));
                                break;
                        } else {
                                --pagecnt;
                        }

                }

                if (!_dump_buf_dif_order)
                        printk(KERN_ERR "BLKGRD ERROR unable to allocate "
                                        "memory for hexdump\n");

        } else {
                printk(KERN_ERR "BLKGRD already allocated _dump_buf_dif=0x%p\n",
                                _dump_buf_dif);
        }

        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 0;

out_remove_device:
        spin_lock_irq(shost->host_lock);
        vport->load_flag |= FC_UNLOADING;
        spin_unlock_irq(shost->host_lock);
        lpfc_stop_phba_timers(phba);
        phba->pport->work_port_events = 0;
        lpfc_disable_intr(phba);
        lpfc_sli_hba_down(phba);
        lpfc_sli_brdrestart(phba);
out_free_sysfs_attr:
        lpfc_free_sysfs_attr(vport);
out_destroy_port:
        destroy_port(vport);
out_kthread_stop:
        kthread_stop(phba->worker_thread);
out_free_iocbq:
        list_for_each_entry_safe(iocbq_entry, iocbq_next,
                                                &phba->lpfc_iocb_list, list) {
                kfree(iocbq_entry);
                phba->total_iocbq_bufs--;
        }
        lpfc_mem_free(phba);
out_free_hbqslimp:
        dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
                          phba->hbqslimp.virt, phba->hbqslimp.phys);
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_idr_remove:
        idr_remove(&lpfc_hba_index, phba->brd_no);
out_free_phba:
        kfree(phba);
out_release_regions:
        pci_release_selected_regions(pdev, bars);
out_disable_device:
        pci_disable_device(pdev);
out:
        pci_set_drvdata(pdev, NULL);
        if (shost)
                scsi_host_put(shost);
        return error;
}

/**
 * lpfc_pci_remove_one: lpfc PCI func to unregister device 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, it performs all the necessary cleanup
 * for the HBA device to be removed from the PCI subsystem properly.
 **/
static void __devexit
lpfc_pci_remove_one(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;
        int bars = pci_select_bars(pdev, IORESOURCE_MEM);

        spin_lock_irq(&phba->hbalock);
        vport->load_flag |= FC_UNLOADING;
        spin_unlock_irq(&phba->hbalock);

        lpfc_free_sysfs_attr(vport);

        kthread_stop(phba->worker_thread);

        /* Release all the vports against this physical port */
        vports = lpfc_create_vport_work_array(phba);
        if (vports != NULL)
                for (i = 1; i <= phba->max_vpi && vports[i] != NULL; i++)
                        fc_vport_terminate(vports[i]->fc_vport);
        lpfc_destroy_vport_work_array(phba, vports);

        /* Remove FC host and then SCSI host with the physical port */
        fc_remove_host(shost);
        scsi_remove_host(shost);
        lpfc_cleanup(vport);

        /*
         * Bring down the SLI Layer. This step disable all interrupts,
         * clears the rings, discards all mailbox commands, and resets
         * the HBA.
         */
        lpfc_sli_hba_down(phba);
        lpfc_sli_brdrestart(phba);

        lpfc_stop_phba_timers(phba);
        spin_lock_irq(&phba->hbalock);
        list_del_init(&vport->listentry);
        spin_unlock_irq(&phba->hbalock);

        lpfc_debugfs_terminate(vport);

        /* Disable interrupt */
        lpfc_disable_intr(phba);

        pci_set_drvdata(pdev, NULL);
        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_mem_free(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);

        idr_remove(&lpfc_hba_index, phba->brd_no);

        kfree(phba);

        pci_release_selected_regions(pdev, bars);
        pci_disable_device(pdev);
}

/**
 * lpfc_pci_suspend_one: lpfc PCI func to suspend device for power management.
 * @pdev: pointer to PCI device
 * @msg: power management message
 *
 * This routine is to be registered to the kernel's PCI subsystem to support
 * system Power Management (PM). 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
lpfc_pci_suspend_one(struct pci_dev *pdev, pm_message_t msg)
{
        struct Scsi_Host *shost = pci_get_drvdata(pdev);
        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_offline(phba);
        kthread_stop(phba->worker_thread);

        /* Disable interrupt from device */
        lpfc_disable_intr(phba);

        /* Save device state to PCI config space */
        pci_save_state(pdev);
        pci_set_power_state(pdev, PCI_D3hot);

        return 0;
}

/**
 * lpfc_pci_resume_one: lpfc PCI func to resume device for power management.
 * @pdev: pointer to PCI 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 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
lpfc_pci_resume_one(struct pci_dev *pdev)
{
        struct Scsi_Host *shost = pci_get_drvdata(pdev);
        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");

        /* Restore device state from PCI config space */
        pci_set_power_state(pdev, PCI_D0);
        pci_restore_state(pdev);
        if (pdev->is_busmaster)
                pci_set_master(pdev);

        /* 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;
        }

        /* Configure and enable interrupt */
        intr_mode = lpfc_enable_intr(phba, phba->intr_mode);
        if (intr_mode == LPFC_INTR_ERROR) {
                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                                "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_io_error_detected: Driver method for handling PCI I/O error detected.
 * @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 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(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;
        struct lpfc_sli *psli = &phba->sli;
        struct lpfc_sli_ring  *pring;

        if (state == pci_channel_io_perm_failure) {
                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                                "0472 PCI channel I/O permanent failure\n");
                /* Block all SCSI devices' I/Os on the host */
                lpfc_scsi_dev_block(phba);
                /* Clean up all driver's outstanding SCSI I/Os */
                lpfc_sli_flush_fcp_rings(phba);
                return PCI_ERS_RESULT_DISCONNECT;
        }

        pci_disable_device(pdev);
        /*
         * There may be I/Os dropped by the firmware.
         * Error iocb (I/O) on txcmplq and let the SCSI layer
         * retry it after re-establishing link.
         */
        pring = &psli->ring[psli->fcp_ring];
        lpfc_sli_abort_iocb_ring(phba, pring);

        /* Disable interrupt */
        lpfc_disable_intr(phba);

        /* Request a slot reset. */
        return PCI_ERS_RESULT_NEED_RESET;
}

/**
 * lpfc_io_slot_reset: Restart a PCI device from scratch.
 * @pdev: pointer to PCI device.
 *
 * This routine is registered to the PCI subsystem for error handling. 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 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(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);
        if (pdev->is_busmaster)
                pci_set_master(pdev);

        spin_lock_irq(&phba->hbalock);
        psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
        spin_unlock_irq(&phba->hbalock);

        /* Configure and enable interrupt */
        intr_mode = lpfc_enable_intr(phba, phba->intr_mode);
        if (intr_mode == LPFC_INTR_ERROR) {
                lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                                "0427 Cannot re-enable interrupt after "
                                "slot reset.\n");
                return PCI_ERS_RESULT_DISCONNECT;
        } else
                phba->intr_mode = intr_mode;

        /* Take device offline; this will perform cleanup */
        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: Resume 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. After this call,
 * traffic can start to flow from this device again.
 */
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;

        lpfc_online(phba);
}

static struct pci_device_id lpfc_id_table[] = {
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_VIPER,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FIREFLY,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_THOR,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PEGASUS,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_CENTAUR,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_DRAGONFLY,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SUPERFLY,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_RFLY,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PFLY,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_SCSP,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_DCSP,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_SCSP,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_DCSP,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BMID,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BSMB,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HORNET,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_SCSP,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_DCSP,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZMID,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZSMB,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_TFLY,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP101,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP10000S,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP11000S,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LPE11000S,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_MID,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SMB,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_DCSP,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SCSP,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_S,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_VF,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_PF,
                PCI_ANY_ID, PCI_ANY_ID, },
        {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_S,
                PCI_ANY_ID, PCI_ANY_ID, },
        { 0 }
};

MODULE_DEVICE_TABLE(pci, lpfc_id_table);

static struct pci_error_handlers lpfc_err_handler = {
        .error_detected = lpfc_io_error_detected,
        .slot_reset = lpfc_io_slot_reset,
        .resume = lpfc_io_resume,
};

static struct pci_driver lpfc_driver = {
        .name           = LPFC_DRIVER_NAME,
        .id_table       = lpfc_id_table,
        .probe          = lpfc_pci_probe_one,
        .remove         = __devexit_p(lpfc_pci_remove_one),
        .suspend        = lpfc_pci_suspend_one,
        .resume         = lpfc_pci_resume_one,
        .err_handler    = &lpfc_err_handler,
};

/**
 * 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;

        printk(LPFC_MODULE_DESC "\n");
        printk(LPFC_COPYRIGHT "\n");

        if (lpfc_enable_npiv) {
                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)
                return -ENOMEM;
        if (lpfc_enable_npiv) {
                lpfc_vport_transport_template =
                        fc_attach_transport(&lpfc_vport_transport_functions);
                if (lpfc_vport_transport_template == NULL) {
                        fc_release_transport(lpfc_transport_template);
                        return -ENOMEM;
                }
        }
        error = pci_register_driver(&lpfc_driver);
        if (error) {
                fc_release_transport(lpfc_transport_template);
                if (lpfc_enable_npiv)
                        fc_release_transport(lpfc_vport_transport_template);
        }

        return error;
}

/**
 * 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)
{
        pci_unregister_driver(&lpfc_driver);
        fc_release_transport(lpfc_transport_template);
        if (lpfc_enable_npiv)
                fc_release_transport(lpfc_vport_transport_template);
        if (_dump_buf_data) {
                printk(KERN_ERR "BLKGRD freeing %lu pages for _dump_buf_data "
                                "at 0x%p\n",
                                (1L << _dump_buf_data_order), _dump_buf_data);
                free_pages((unsigned long)_dump_buf_data, _dump_buf_data_order);
        }

        if (_dump_buf_dif) {
                printk(KERN_ERR "BLKGRD freeing %lu pages for _dump_buf_dif "
                                "at 0x%p\n",
                                (1L << _dump_buf_dif_order), _dump_buf_dif);
                free_pages((unsigned long)_dump_buf_dif, _dump_buf_dif_order);
        }
}

module_init(lpfc_init);
module_exit(lpfc_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION(LPFC_MODULE_DESC);
MODULE_AUTHOR("Emulex Corporation - tech.support@emulex.com");
MODULE_VERSION("0:" LPFC_DRIVER_VERSION);