Merge tag 'riscv-for-linus-4.20-rc2' of git://git.kernel.org/pub/scm/linux/kernel...

[linux.git] / drivers / scsi / qla2xxx / qla_os.c

/*
 * QLogic Fibre Channel HBA Driver
 * Copyright (c)  2003-2014 QLogic Corporation
 *
 * See LICENSE.qla2xxx for copyright and licensing details.
 */
#include "qla_def.h"

#include <linux/moduleparam.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>
#include <linux/kthread.h>
#include <linux/mutex.h>
#include <linux/kobject.h>
#include <linux/slab.h>
#include <linux/blk-mq-pci.h>
#include <linux/refcount.h>

#include <scsi/scsi_tcq.h>
#include <scsi/scsicam.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_fc.h>

#include "qla_target.h"

/*
 * Driver version
 */
char qla2x00_version_str[40];

static int apidev_major;

/*
 * SRB allocation cache
 */
struct kmem_cache *srb_cachep;

/*
 * CT6 CTX allocation cache
 */
static struct kmem_cache *ctx_cachep;
/*
 * error level for logging
 */
int ql_errlev = ql_log_all;

static int ql2xenableclass2;
module_param(ql2xenableclass2, int, S_IRUGO|S_IRUSR);
MODULE_PARM_DESC(ql2xenableclass2,
                "Specify if Class 2 operations are supported from the very "
                "beginning. Default is 0 - class 2 not supported.");


int ql2xlogintimeout = 20;
module_param(ql2xlogintimeout, int, S_IRUGO);
MODULE_PARM_DESC(ql2xlogintimeout,
                "Login timeout value in seconds.");

int qlport_down_retry;
module_param(qlport_down_retry, int, S_IRUGO);
MODULE_PARM_DESC(qlport_down_retry,
                "Maximum number of command retries to a port that returns "
                "a PORT-DOWN status.");

int ql2xplogiabsentdevice;
module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xplogiabsentdevice,
                "Option to enable PLOGI to devices that are not present after "
                "a Fabric scan.  This is needed for several broken switches. "
                "Default is 0 - no PLOGI. 1 - perform PLOGI.");

int ql2xloginretrycount = 0;
module_param(ql2xloginretrycount, int, S_IRUGO);
MODULE_PARM_DESC(ql2xloginretrycount,
                "Specify an alternate value for the NVRAM login retry count.");

int ql2xallocfwdump = 1;
module_param(ql2xallocfwdump, int, S_IRUGO);
MODULE_PARM_DESC(ql2xallocfwdump,
                "Option to enable allocation of memory for a firmware dump "
                "during HBA initialization.  Memory allocation requirements "
                "vary by ISP type.  Default is 1 - allocate memory.");

int ql2xextended_error_logging;
module_param(ql2xextended_error_logging, int, S_IRUGO|S_IWUSR);
module_param_named(logging, ql2xextended_error_logging, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xextended_error_logging,
                "Option to enable extended error logging,\n"
                "\t\tDefault is 0 - no logging.  0x40000000 - Module Init & Probe.\n"
                "\t\t0x20000000 - Mailbox Cmnds. 0x10000000 - Device Discovery.\n"
                "\t\t0x08000000 - IO tracing.    0x04000000 - DPC Thread.\n"
                "\t\t0x02000000 - Async events.  0x01000000 - Timer routines.\n"
                "\t\t0x00800000 - User space.    0x00400000 - Task Management.\n"
                "\t\t0x00200000 - AER/EEH.       0x00100000 - Multi Q.\n"
                "\t\t0x00080000 - P3P Specific.  0x00040000 - Virtual Port.\n"
                "\t\t0x00020000 - Buffer Dump.   0x00010000 - Misc.\n"
                "\t\t0x00008000 - Verbose.       0x00004000 - Target.\n"
                "\t\t0x00002000 - Target Mgmt.   0x00001000 - Target TMF.\n"
                "\t\t0x7fffffff - For enabling all logs, can be too many logs.\n"
                "\t\t0x1e400000 - Preferred value for capturing essential "
                "debug information (equivalent to old "
                "ql2xextended_error_logging=1).\n"
                "\t\tDo LOGICAL OR of the value to enable more than one level");

int ql2xshiftctondsd = 6;
module_param(ql2xshiftctondsd, int, S_IRUGO);
MODULE_PARM_DESC(ql2xshiftctondsd,
                "Set to control shifting of command type processing "
                "based on total number of SG elements.");

int ql2xfdmienable=1;
module_param(ql2xfdmienable, int, S_IRUGO|S_IWUSR);
module_param_named(fdmi, ql2xfdmienable, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xfdmienable,
                "Enables FDMI registrations. "
                "0 - no FDMI. Default is 1 - perform FDMI.");

#define MAX_Q_DEPTH     64
static int ql2xmaxqdepth = MAX_Q_DEPTH;
module_param(ql2xmaxqdepth, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xmaxqdepth,
                "Maximum queue depth to set for each LUN. "
                "Default is 64.");

#if (IS_ENABLED(CONFIG_NVME_FC))
int ql2xenabledif;
#else
int ql2xenabledif = 2;
#endif
module_param(ql2xenabledif, int, S_IRUGO);
MODULE_PARM_DESC(ql2xenabledif,
                " Enable T10-CRC-DIF:\n"
                " Default is 2.\n"
                "  0 -- No DIF Support\n"
                "  1 -- Enable DIF for all types\n"
                "  2 -- Enable DIF for all types, except Type 0.\n");

#if (IS_ENABLED(CONFIG_NVME_FC))
int ql2xnvmeenable = 1;
#else
int ql2xnvmeenable;
#endif
module_param(ql2xnvmeenable, int, 0644);
MODULE_PARM_DESC(ql2xnvmeenable,
    "Enables NVME support. "
    "0 - no NVMe.  Default is Y");

int ql2xenablehba_err_chk = 2;
module_param(ql2xenablehba_err_chk, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xenablehba_err_chk,
                " Enable T10-CRC-DIF Error isolation by HBA:\n"
                " Default is 2.\n"
                "  0 -- Error isolation disabled\n"
                "  1 -- Error isolation enabled only for DIX Type 0\n"
                "  2 -- Error isolation enabled for all Types\n");

int ql2xiidmaenable=1;
module_param(ql2xiidmaenable, int, S_IRUGO);
MODULE_PARM_DESC(ql2xiidmaenable,
                "Enables iIDMA settings "
                "Default is 1 - perform iIDMA. 0 - no iIDMA.");

int ql2xmqsupport = 1;
module_param(ql2xmqsupport, int, S_IRUGO);
MODULE_PARM_DESC(ql2xmqsupport,
                "Enable on demand multiple queue pairs support "
                "Default is 1 for supported. "
                "Set it to 0 to turn off mq qpair support.");

int ql2xfwloadbin;
module_param(ql2xfwloadbin, int, S_IRUGO|S_IWUSR);
module_param_named(fwload, ql2xfwloadbin, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xfwloadbin,
                "Option to specify location from which to load ISP firmware:.\n"
                " 2 -- load firmware via the request_firmware() (hotplug).\n"
                "      interface.\n"
                " 1 -- load firmware from flash.\n"
                " 0 -- use default semantics.\n");

int ql2xetsenable;
module_param(ql2xetsenable, int, S_IRUGO);
MODULE_PARM_DESC(ql2xetsenable,
                "Enables firmware ETS burst."
                "Default is 0 - skip ETS enablement.");

int ql2xdbwr = 1;
module_param(ql2xdbwr, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xdbwr,
                "Option to specify scheme for request queue posting.\n"
                " 0 -- Regular doorbell.\n"
                " 1 -- CAMRAM doorbell (faster).\n");

int ql2xtargetreset = 1;
module_param(ql2xtargetreset, int, S_IRUGO);
MODULE_PARM_DESC(ql2xtargetreset,
                 "Enable target reset."
                 "Default is 1 - use hw defaults.");

int ql2xgffidenable;
module_param(ql2xgffidenable, int, S_IRUGO);
MODULE_PARM_DESC(ql2xgffidenable,
                "Enables GFF_ID checks of port type. "
                "Default is 0 - Do not use GFF_ID information.");

int ql2xasynctmfenable = 1;
module_param(ql2xasynctmfenable, int, S_IRUGO);
MODULE_PARM_DESC(ql2xasynctmfenable,
                "Enables issue of TM IOCBs asynchronously via IOCB mechanism"
                "Default is 1 - Issue TM IOCBs via mailbox mechanism.");

int ql2xdontresethba;
module_param(ql2xdontresethba, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xdontresethba,
                "Option to specify reset behaviour.\n"
                " 0 (Default) -- Reset on failure.\n"
                " 1 -- Do not reset on failure.\n");

uint64_t ql2xmaxlun = MAX_LUNS;
module_param(ql2xmaxlun, ullong, S_IRUGO);
MODULE_PARM_DESC(ql2xmaxlun,
                "Defines the maximum LU number to register with the SCSI "
                "midlayer. Default is 65535.");

int ql2xmdcapmask = 0x1F;
module_param(ql2xmdcapmask, int, S_IRUGO);
MODULE_PARM_DESC(ql2xmdcapmask,
                "Set the Minidump driver capture mask level. "
                "Default is 0x1F - Can be set to 0x3, 0x7, 0xF, 0x1F, 0x7F.");

int ql2xmdenable = 1;
module_param(ql2xmdenable, int, S_IRUGO);
MODULE_PARM_DESC(ql2xmdenable,
                "Enable/disable MiniDump. "
                "0 - MiniDump disabled. "
                "1 (Default) - MiniDump enabled.");

int ql2xexlogins = 0;
module_param(ql2xexlogins, uint, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xexlogins,
                 "Number of extended Logins. "
                 "0 (Default)- Disabled.");

int ql2xexchoffld = 1024;
module_param(ql2xexchoffld, uint, 0644);
MODULE_PARM_DESC(ql2xexchoffld,
        "Number of target exchanges.");

int ql2xiniexchg = 1024;
module_param(ql2xiniexchg, uint, 0644);
MODULE_PARM_DESC(ql2xiniexchg,
        "Number of initiator exchanges.");

int ql2xfwholdabts = 0;
module_param(ql2xfwholdabts, int, S_IRUGO);
MODULE_PARM_DESC(ql2xfwholdabts,
                "Allow FW to hold status IOCB until ABTS rsp received. "
                "0 (Default) Do not set fw option. "
                "1 - Set fw option to hold ABTS.");

int ql2xmvasynctoatio = 1;
module_param(ql2xmvasynctoatio, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xmvasynctoatio,
                "Move PUREX, ABTS RX and RIDA IOCBs to ATIOQ"
                "0 (Default). Do not move IOCBs"
                "1 - Move IOCBs.");

int ql2xautodetectsfp = 1;
module_param(ql2xautodetectsfp, int, 0444);
MODULE_PARM_DESC(ql2xautodetectsfp,
                 "Detect SFP range and set appropriate distance.\n"
                 "1 (Default): Enable\n");

int ql2xenablemsix = 1;
module_param(ql2xenablemsix, int, 0444);
MODULE_PARM_DESC(ql2xenablemsix,
                 "Set to enable MSI or MSI-X interrupt mechanism.\n"
                 " Default is 1, enable MSI-X interrupt mechanism.\n"
                 " 0 -- enable traditional pin-based mechanism.\n"
                 " 1 -- enable MSI-X interrupt mechanism.\n"
                 " 2 -- enable MSI interrupt mechanism.\n");

int qla2xuseresexchforels;
module_param(qla2xuseresexchforels, int, 0444);
MODULE_PARM_DESC(qla2xuseresexchforels,
                 "Reserve 1/2 of emergency exchanges for ELS.\n"
                 " 0 (default): disabled");

/*
 * SCSI host template entry points
 */
static int qla2xxx_slave_configure(struct scsi_device * device);
static int qla2xxx_slave_alloc(struct scsi_device *);
static int qla2xxx_scan_finished(struct Scsi_Host *, unsigned long time);
static void qla2xxx_scan_start(struct Scsi_Host *);
static void qla2xxx_slave_destroy(struct scsi_device *);
static int qla2xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
static int qla2xxx_eh_abort(struct scsi_cmnd *);
static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
static int qla2xxx_eh_target_reset(struct scsi_cmnd *);
static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
static int qla2xxx_eh_host_reset(struct scsi_cmnd *);

static void qla2x00_clear_drv_active(struct qla_hw_data *);
static void qla2x00_free_device(scsi_qla_host_t *);
static int qla2xxx_map_queues(struct Scsi_Host *shost);
static void qla2x00_destroy_deferred_work(struct qla_hw_data *);


struct scsi_host_template qla2xxx_driver_template = {
        .module                 = THIS_MODULE,
        .name                   = QLA2XXX_DRIVER_NAME,
        .queuecommand           = qla2xxx_queuecommand,

        .eh_timed_out           = fc_eh_timed_out,
        .eh_abort_handler       = qla2xxx_eh_abort,
        .eh_device_reset_handler = qla2xxx_eh_device_reset,
        .eh_target_reset_handler = qla2xxx_eh_target_reset,
        .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
        .eh_host_reset_handler  = qla2xxx_eh_host_reset,

        .slave_configure        = qla2xxx_slave_configure,

        .slave_alloc            = qla2xxx_slave_alloc,
        .slave_destroy          = qla2xxx_slave_destroy,
        .scan_finished          = qla2xxx_scan_finished,
        .scan_start             = qla2xxx_scan_start,
        .change_queue_depth     = scsi_change_queue_depth,
        .map_queues             = qla2xxx_map_queues,
        .this_id                = -1,
        .cmd_per_lun            = 3,
        .use_clustering         = ENABLE_CLUSTERING,
        .sg_tablesize           = SG_ALL,

        .max_sectors            = 0xFFFF,
        .shost_attrs            = qla2x00_host_attrs,

        .supported_mode         = MODE_INITIATOR,
        .track_queue_depth      = 1,
};

static struct scsi_transport_template *qla2xxx_transport_template = NULL;
struct scsi_transport_template *qla2xxx_transport_vport_template = NULL;

/* TODO Convert to inlines
 *
 * Timer routines
 */

__inline__ void
qla2x00_start_timer(scsi_qla_host_t *vha, unsigned long interval)
{
        timer_setup(&vha->timer, qla2x00_timer, 0);
        vha->timer.expires = jiffies + interval * HZ;
        add_timer(&vha->timer);
        vha->timer_active = 1;
}

static inline void
qla2x00_restart_timer(scsi_qla_host_t *vha, unsigned long interval)
{
        /* Currently used for 82XX only. */
        if (vha->device_flags & DFLG_DEV_FAILED) {
                ql_dbg(ql_dbg_timer, vha, 0x600d,
                    "Device in a failed state, returning.\n");
                return;
        }

        mod_timer(&vha->timer, jiffies + interval * HZ);
}

static __inline__ void
qla2x00_stop_timer(scsi_qla_host_t *vha)
{
        del_timer_sync(&vha->timer);
        vha->timer_active = 0;
}

static int qla2x00_do_dpc(void *data);

static void qla2x00_rst_aen(scsi_qla_host_t *);

static int qla2x00_mem_alloc(struct qla_hw_data *, uint16_t, uint16_t,
        struct req_que **, struct rsp_que **);
static void qla2x00_free_fw_dump(struct qla_hw_data *);
static void qla2x00_mem_free(struct qla_hw_data *);
int qla2xxx_mqueuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd,
        struct qla_qpair *qpair);

/* -------------------------------------------------------------------------- */
static void qla_init_base_qpair(struct scsi_qla_host *vha, struct req_que *req,
    struct rsp_que *rsp)
{
        struct qla_hw_data *ha = vha->hw;
        rsp->qpair = ha->base_qpair;
        rsp->req = req;
        ha->base_qpair->hw = ha;
        ha->base_qpair->req = req;
        ha->base_qpair->rsp = rsp;
        ha->base_qpair->vha = vha;
        ha->base_qpair->qp_lock_ptr = &ha->hardware_lock;
        ha->base_qpair->use_shadow_reg = IS_SHADOW_REG_CAPABLE(ha) ? 1 : 0;
        ha->base_qpair->msix = &ha->msix_entries[QLA_MSIX_RSP_Q];
        ha->base_qpair->srb_mempool = ha->srb_mempool;
        INIT_LIST_HEAD(&ha->base_qpair->hints_list);
        ha->base_qpair->enable_class_2 = ql2xenableclass2;
        /* init qpair to this cpu. Will adjust at run time. */
        qla_cpu_update(rsp->qpair, raw_smp_processor_id());
        ha->base_qpair->pdev = ha->pdev;

        if (IS_QLA27XX(ha) || IS_QLA83XX(ha))
                ha->base_qpair->reqq_start_iocbs = qla_83xx_start_iocbs;
}

static int qla2x00_alloc_queues(struct qla_hw_data *ha, struct req_que *req,
                                struct rsp_que *rsp)
{
        scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
        ha->req_q_map = kcalloc(ha->max_req_queues, sizeof(struct req_que *),
                                GFP_KERNEL);
        if (!ha->req_q_map) {
                ql_log(ql_log_fatal, vha, 0x003b,
                    "Unable to allocate memory for request queue ptrs.\n");
                goto fail_req_map;
        }

        ha->rsp_q_map = kcalloc(ha->max_rsp_queues, sizeof(struct rsp_que *),
                                GFP_KERNEL);
        if (!ha->rsp_q_map) {
                ql_log(ql_log_fatal, vha, 0x003c,
                    "Unable to allocate memory for response queue ptrs.\n");
                goto fail_rsp_map;
        }

        ha->base_qpair = kzalloc(sizeof(struct qla_qpair), GFP_KERNEL);
        if (ha->base_qpair == NULL) {
                ql_log(ql_log_warn, vha, 0x00e0,
                    "Failed to allocate base queue pair memory.\n");
                goto fail_base_qpair;
        }

        qla_init_base_qpair(vha, req, rsp);

        if ((ql2xmqsupport || ql2xnvmeenable) && ha->max_qpairs) {
                ha->queue_pair_map = kcalloc(ha->max_qpairs, sizeof(struct qla_qpair *),
                        GFP_KERNEL);
                if (!ha->queue_pair_map) {
                        ql_log(ql_log_fatal, vha, 0x0180,
                            "Unable to allocate memory for queue pair ptrs.\n");
                        goto fail_qpair_map;
                }
        }

        /*
         * Make sure we record at least the request and response queue zero in
         * case we need to free them if part of the probe fails.
         */
        ha->rsp_q_map[0] = rsp;
        ha->req_q_map[0] = req;
        set_bit(0, ha->rsp_qid_map);
        set_bit(0, ha->req_qid_map);
        return 0;

fail_qpair_map:
        kfree(ha->base_qpair);
        ha->base_qpair = NULL;
fail_base_qpair:
        kfree(ha->rsp_q_map);
        ha->rsp_q_map = NULL;
fail_rsp_map:
        kfree(ha->req_q_map);
        ha->req_q_map = NULL;
fail_req_map:
        return -ENOMEM;
}

static void qla2x00_free_req_que(struct qla_hw_data *ha, struct req_que *req)
{
        if (IS_QLAFX00(ha)) {
                if (req && req->ring_fx00)
                        dma_free_coherent(&ha->pdev->dev,
                            (req->length_fx00 + 1) * sizeof(request_t),
                            req->ring_fx00, req->dma_fx00);
        } else if (req && req->ring)
                dma_free_coherent(&ha->pdev->dev,
                (req->length + 1) * sizeof(request_t),
                req->ring, req->dma);

        if (req)
                kfree(req->outstanding_cmds);

        kfree(req);
}

static void qla2x00_free_rsp_que(struct qla_hw_data *ha, struct rsp_que *rsp)
{
        if (IS_QLAFX00(ha)) {
                if (rsp && rsp->ring_fx00)
                        dma_free_coherent(&ha->pdev->dev,
                            (rsp->length_fx00 + 1) * sizeof(request_t),
                            rsp->ring_fx00, rsp->dma_fx00);
        } else if (rsp && rsp->ring) {
                dma_free_coherent(&ha->pdev->dev,
                (rsp->length + 1) * sizeof(response_t),
                rsp->ring, rsp->dma);
        }
        kfree(rsp);
}

static void qla2x00_free_queues(struct qla_hw_data *ha)
{
        struct req_que *req;
        struct rsp_que *rsp;
        int cnt;
        unsigned long flags;

        if (ha->queue_pair_map) {
                kfree(ha->queue_pair_map);
                ha->queue_pair_map = NULL;
        }
        if (ha->base_qpair) {
                kfree(ha->base_qpair);
                ha->base_qpair = NULL;
        }

        spin_lock_irqsave(&ha->hardware_lock, flags);
        for (cnt = 0; cnt < ha->max_req_queues; cnt++) {
                if (!test_bit(cnt, ha->req_qid_map))
                        continue;

                req = ha->req_q_map[cnt];
                clear_bit(cnt, ha->req_qid_map);
                ha->req_q_map[cnt] = NULL;

                spin_unlock_irqrestore(&ha->hardware_lock, flags);
                qla2x00_free_req_que(ha, req);
                spin_lock_irqsave(&ha->hardware_lock, flags);
        }
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        kfree(ha->req_q_map);
        ha->req_q_map = NULL;


        spin_lock_irqsave(&ha->hardware_lock, flags);
        for (cnt = 0; cnt < ha->max_rsp_queues; cnt++) {
                if (!test_bit(cnt, ha->rsp_qid_map))
                        continue;

                rsp = ha->rsp_q_map[cnt];
                clear_bit(cnt, ha->rsp_qid_map);
                ha->rsp_q_map[cnt] =  NULL;
                spin_unlock_irqrestore(&ha->hardware_lock, flags);
                qla2x00_free_rsp_que(ha, rsp);
                spin_lock_irqsave(&ha->hardware_lock, flags);
        }
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        kfree(ha->rsp_q_map);
        ha->rsp_q_map = NULL;
}

static char *
qla2x00_pci_info_str(struct scsi_qla_host *vha, char *str)
{
        struct qla_hw_data *ha = vha->hw;
        static char *pci_bus_modes[] = {
                "33", "66", "100", "133",
        };
        uint16_t pci_bus;

        strcpy(str, "PCI");
        pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
        if (pci_bus) {
                strcat(str, "-X (");
                strcat(str, pci_bus_modes[pci_bus]);
        } else {
                pci_bus = (ha->pci_attr & BIT_8) >> 8;
                strcat(str, " (");
                strcat(str, pci_bus_modes[pci_bus]);
        }
        strcat(str, " MHz)");

        return (str);
}

static char *
qla24xx_pci_info_str(struct scsi_qla_host *vha, char *str)
{
        static char *pci_bus_modes[] = { "33", "66", "100", "133", };
        struct qla_hw_data *ha = vha->hw;
        uint32_t pci_bus;

        if (pci_is_pcie(ha->pdev)) {
                char lwstr[6];
                uint32_t lstat, lspeed, lwidth;

                pcie_capability_read_dword(ha->pdev, PCI_EXP_LNKCAP, &lstat);
                lspeed = lstat & PCI_EXP_LNKCAP_SLS;
                lwidth = (lstat & PCI_EXP_LNKCAP_MLW) >> 4;

                strcpy(str, "PCIe (");
                switch (lspeed) {
                case 1:
                        strcat(str, "2.5GT/s ");
                        break;
                case 2:
                        strcat(str, "5.0GT/s ");
                        break;
                case 3:
                        strcat(str, "8.0GT/s ");
                        break;
                default:
                        strcat(str, "<unknown> ");
                        break;
                }
                snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
                strcat(str, lwstr);

                return str;
        }

        strcpy(str, "PCI");
        pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
        if (pci_bus == 0 || pci_bus == 8) {
                strcat(str, " (");
                strcat(str, pci_bus_modes[pci_bus >> 3]);
        } else {
                strcat(str, "-X ");
                if (pci_bus & BIT_2)
                        strcat(str, "Mode 2");
                else
                        strcat(str, "Mode 1");
                strcat(str, " (");
                strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
        }
        strcat(str, " MHz)");

        return str;
}

static char *
qla2x00_fw_version_str(struct scsi_qla_host *vha, char *str, size_t size)
{
        char un_str[10];
        struct qla_hw_data *ha = vha->hw;

        snprintf(str, size, "%d.%02d.%02d ", ha->fw_major_version,
            ha->fw_minor_version, ha->fw_subminor_version);

        if (ha->fw_attributes & BIT_9) {
                strcat(str, "FLX");
                return (str);
        }

        switch (ha->fw_attributes & 0xFF) {
        case 0x7:
                strcat(str, "EF");
                break;
        case 0x17:
                strcat(str, "TP");
                break;
        case 0x37:
                strcat(str, "IP");
                break;
        case 0x77:
                strcat(str, "VI");
                break;
        default:
                sprintf(un_str, "(%x)", ha->fw_attributes);
                strcat(str, un_str);
                break;
        }
        if (ha->fw_attributes & 0x100)
                strcat(str, "X");

        return (str);
}

static char *
qla24xx_fw_version_str(struct scsi_qla_host *vha, char *str, size_t size)
{
        struct qla_hw_data *ha = vha->hw;

        snprintf(str, size, "%d.%02d.%02d (%x)", ha->fw_major_version,
            ha->fw_minor_version, ha->fw_subminor_version, ha->fw_attributes);
        return str;
}

void
qla2x00_sp_free_dma(void *ptr)
{
        srb_t *sp = ptr;
        struct qla_hw_data *ha = sp->vha->hw;
        struct scsi_cmnd *cmd = GET_CMD_SP(sp);
        void *ctx = GET_CMD_CTX_SP(sp);

        if (sp->flags & SRB_DMA_VALID) {
                scsi_dma_unmap(cmd);
                sp->flags &= ~SRB_DMA_VALID;
        }

        if (sp->flags & SRB_CRC_PROT_DMA_VALID) {
                dma_unmap_sg(&ha->pdev->dev, scsi_prot_sglist(cmd),
                    scsi_prot_sg_count(cmd), cmd->sc_data_direction);
                sp->flags &= ~SRB_CRC_PROT_DMA_VALID;
        }

        if (!ctx)
                goto end;

        if (sp->flags & SRB_CRC_CTX_DSD_VALID) {
                /* List assured to be having elements */
                qla2x00_clean_dsd_pool(ha, ctx);
                sp->flags &= ~SRB_CRC_CTX_DSD_VALID;
        }

        if (sp->flags & SRB_CRC_CTX_DMA_VALID) {
                struct crc_context *ctx0 = ctx;

                dma_pool_free(ha->dl_dma_pool, ctx0, ctx0->crc_ctx_dma);
                sp->flags &= ~SRB_CRC_CTX_DMA_VALID;
        }

        if (sp->flags & SRB_FCP_CMND_DMA_VALID) {
                struct ct6_dsd *ctx1 = ctx;

                dma_pool_free(ha->fcp_cmnd_dma_pool, ctx1->fcp_cmnd,
                    ctx1->fcp_cmnd_dma);
                list_splice(&ctx1->dsd_list, &ha->gbl_dsd_list);
                ha->gbl_dsd_inuse -= ctx1->dsd_use_cnt;
                ha->gbl_dsd_avail += ctx1->dsd_use_cnt;
                mempool_free(ctx1, ha->ctx_mempool);
        }

end:
        if (sp->type != SRB_NVME_CMD && sp->type != SRB_NVME_LS) {
                CMD_SP(cmd) = NULL;
                qla2x00_rel_sp(sp);
        }
}

void
qla2x00_sp_compl(void *ptr, int res)
{
        srb_t *sp = ptr;
        struct scsi_cmnd *cmd = GET_CMD_SP(sp);

        cmd->result = res;

        if (atomic_read(&sp->ref_count) == 0) {
                ql_dbg(ql_dbg_io, sp->vha, 0x3015,
                    "SP reference-count to ZERO -- sp=%p cmd=%p.\n",
                    sp, GET_CMD_SP(sp));
                if (ql2xextended_error_logging & ql_dbg_io)
                        WARN_ON(atomic_read(&sp->ref_count) == 0);
                return;
        }
        if (!atomic_dec_and_test(&sp->ref_count))
                return;

        sp->free(sp);
        cmd->scsi_done(cmd);
}

void
qla2xxx_qpair_sp_free_dma(void *ptr)
{
        srb_t *sp = (srb_t *)ptr;
        struct scsi_cmnd *cmd = GET_CMD_SP(sp);
        struct qla_hw_data *ha = sp->fcport->vha->hw;
        void *ctx = GET_CMD_CTX_SP(sp);

        if (sp->flags & SRB_DMA_VALID) {
                scsi_dma_unmap(cmd);
                sp->flags &= ~SRB_DMA_VALID;
        }

        if (sp->flags & SRB_CRC_PROT_DMA_VALID) {
                dma_unmap_sg(&ha->pdev->dev, scsi_prot_sglist(cmd),
                    scsi_prot_sg_count(cmd), cmd->sc_data_direction);
                sp->flags &= ~SRB_CRC_PROT_DMA_VALID;
        }

        if (!ctx)
                goto end;

        if (sp->flags & SRB_CRC_CTX_DSD_VALID) {
                /* List assured to be having elements */
                qla2x00_clean_dsd_pool(ha, ctx);
                sp->flags &= ~SRB_CRC_CTX_DSD_VALID;
        }

        if (sp->flags & SRB_CRC_CTX_DMA_VALID) {
                struct crc_context *ctx0 = ctx;

                dma_pool_free(ha->dl_dma_pool, ctx, ctx0->crc_ctx_dma);
                sp->flags &= ~SRB_CRC_CTX_DMA_VALID;
        }

        if (sp->flags & SRB_FCP_CMND_DMA_VALID) {
                struct ct6_dsd *ctx1 = ctx;
                dma_pool_free(ha->fcp_cmnd_dma_pool, ctx1->fcp_cmnd,
                    ctx1->fcp_cmnd_dma);
                list_splice(&ctx1->dsd_list, &ha->gbl_dsd_list);
                ha->gbl_dsd_inuse -= ctx1->dsd_use_cnt;
                ha->gbl_dsd_avail += ctx1->dsd_use_cnt;
                mempool_free(ctx1, ha->ctx_mempool);
        }
end:
        CMD_SP(cmd) = NULL;
        qla2xxx_rel_qpair_sp(sp->qpair, sp);
}

void
qla2xxx_qpair_sp_compl(void *ptr, int res)
{
        srb_t *sp = ptr;
        struct scsi_cmnd *cmd = GET_CMD_SP(sp);

        cmd->result = res;

        if (atomic_read(&sp->ref_count) == 0) {
                ql_dbg(ql_dbg_io, sp->fcport->vha, 0x3079,
                    "SP reference-count to ZERO -- sp=%p cmd=%p.\n",
                    sp, GET_CMD_SP(sp));
                if (ql2xextended_error_logging & ql_dbg_io)
                        WARN_ON(atomic_read(&sp->ref_count) == 0);
                return;
        }
        if (!atomic_dec_and_test(&sp->ref_count))
                return;

        sp->free(sp);
        cmd->scsi_done(cmd);
}

/* If we are SP1 here, we need to still take and release the host_lock as SP1
 * does not have the changes necessary to avoid taking host->host_lock.
 */
static int
qla2xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
{
        scsi_qla_host_t *vha = shost_priv(host);
        fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
        struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
        struct qla_hw_data *ha = vha->hw;
        struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
        srb_t *sp;
        int rval;
        struct qla_qpair *qpair = NULL;
        uint32_t tag;
        uint16_t hwq;

        if (unlikely(test_bit(UNLOADING, &base_vha->dpc_flags))) {
                cmd->result = DID_NO_CONNECT << 16;
                goto qc24_fail_command;
        }

        if (ha->mqenable) {
                if (shost_use_blk_mq(vha->host)) {
                        tag = blk_mq_unique_tag(cmd->request);
                        hwq = blk_mq_unique_tag_to_hwq(tag);
                        qpair = ha->queue_pair_map[hwq];
                } else if (vha->vp_idx && vha->qpair) {
                        qpair = vha->qpair;
                }

                if (qpair)
                        return qla2xxx_mqueuecommand(host, cmd, qpair);
        }

        if (ha->flags.eeh_busy) {
                if (ha->flags.pci_channel_io_perm_failure) {
                        ql_dbg(ql_dbg_aer, vha, 0x9010,
                            "PCI Channel IO permanent failure, exiting "
                            "cmd=%p.\n", cmd);
                        cmd->result = DID_NO_CONNECT << 16;
                } else {
                        ql_dbg(ql_dbg_aer, vha, 0x9011,
                            "EEH_Busy, Requeuing the cmd=%p.\n", cmd);
                        cmd->result = DID_REQUEUE << 16;
                }
                goto qc24_fail_command;
        }

        rval = fc_remote_port_chkready(rport);
        if (rval) {
                cmd->result = rval;
                ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x3003,
                    "fc_remote_port_chkready failed for cmd=%p, rval=0x%x.\n",
                    cmd, rval);
                goto qc24_fail_command;
        }

        if (!vha->flags.difdix_supported &&
                scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
                        ql_dbg(ql_dbg_io, vha, 0x3004,
                            "DIF Cap not reg, fail DIF capable cmd's:%p.\n",
                            cmd);
                        cmd->result = DID_NO_CONNECT << 16;
                        goto qc24_fail_command;
        }

        if (!fcport) {
                cmd->result = DID_NO_CONNECT << 16;
                goto qc24_fail_command;
        }

        if (atomic_read(&fcport->state) != FCS_ONLINE) {
                if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
                        atomic_read(&base_vha->loop_state) == LOOP_DEAD) {
                        ql_dbg(ql_dbg_io, vha, 0x3005,
                            "Returning DNC, fcport_state=%d loop_state=%d.\n",
                            atomic_read(&fcport->state),
                            atomic_read(&base_vha->loop_state));
                        cmd->result = DID_NO_CONNECT << 16;
                        goto qc24_fail_command;
                }
                goto qc24_target_busy;
        }

        /*
         * Return target busy if we've received a non-zero retry_delay_timer
         * in a FCP_RSP.
         */
        if (fcport->retry_delay_timestamp == 0) {
                /* retry delay not set */
        } else if (time_after(jiffies, fcport->retry_delay_timestamp))
                fcport->retry_delay_timestamp = 0;
        else
                goto qc24_target_busy;

        sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC);
        if (!sp)
                goto qc24_host_busy;

        sp->u.scmd.cmd = cmd;
        sp->type = SRB_SCSI_CMD;
        atomic_set(&sp->ref_count, 1);
        CMD_SP(cmd) = (void *)sp;
        sp->free = qla2x00_sp_free_dma;
        sp->done = qla2x00_sp_compl;

        rval = ha->isp_ops->start_scsi(sp);
        if (rval != QLA_SUCCESS) {
                ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x3013,
                    "Start scsi failed rval=%d for cmd=%p.\n", rval, cmd);
                goto qc24_host_busy_free_sp;
        }

        return 0;

qc24_host_busy_free_sp:
        sp->free(sp);

qc24_host_busy:
        return SCSI_MLQUEUE_HOST_BUSY;

qc24_target_busy:
        return SCSI_MLQUEUE_TARGET_BUSY;

qc24_fail_command:
        cmd->scsi_done(cmd);

        return 0;
}

/* For MQ supported I/O */
int
qla2xxx_mqueuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd,
    struct qla_qpair *qpair)
{
        scsi_qla_host_t *vha = shost_priv(host);
        fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
        struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
        struct qla_hw_data *ha = vha->hw;
        struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
        srb_t *sp;
        int rval;

        rval = fc_remote_port_chkready(rport);
        if (rval) {
                cmd->result = rval;
                ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x3076,
                    "fc_remote_port_chkready failed for cmd=%p, rval=0x%x.\n",
                    cmd, rval);
                goto qc24_fail_command;
        }

        if (!fcport) {
                cmd->result = DID_NO_CONNECT << 16;
                goto qc24_fail_command;
        }

        if (atomic_read(&fcport->state) != FCS_ONLINE) {
                if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
                        atomic_read(&base_vha->loop_state) == LOOP_DEAD) {
                        ql_dbg(ql_dbg_io, vha, 0x3077,
                            "Returning DNC, fcport_state=%d loop_state=%d.\n",
                            atomic_read(&fcport->state),
                            atomic_read(&base_vha->loop_state));
                        cmd->result = DID_NO_CONNECT << 16;
                        goto qc24_fail_command;
                }
                goto qc24_target_busy;
        }

        /*
         * Return target busy if we've received a non-zero retry_delay_timer
         * in a FCP_RSP.
         */
        if (fcport->retry_delay_timestamp == 0) {
                /* retry delay not set */
        } else if (time_after(jiffies, fcport->retry_delay_timestamp))
                fcport->retry_delay_timestamp = 0;
        else
                goto qc24_target_busy;

        sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, GFP_ATOMIC);
        if (!sp)
                goto qc24_host_busy;

        sp->u.scmd.cmd = cmd;
        sp->type = SRB_SCSI_CMD;
        atomic_set(&sp->ref_count, 1);
        CMD_SP(cmd) = (void *)sp;
        sp->free = qla2xxx_qpair_sp_free_dma;
        sp->done = qla2xxx_qpair_sp_compl;
        sp->qpair = qpair;

        rval = ha->isp_ops->start_scsi_mq(sp);
        if (rval != QLA_SUCCESS) {
                ql_dbg(ql_dbg_io + ql_dbg_verbose, vha, 0x3078,
                    "Start scsi failed rval=%d for cmd=%p.\n", rval, cmd);
                if (rval == QLA_INTERFACE_ERROR)
                        goto qc24_fail_command;
                goto qc24_host_busy_free_sp;
        }

        return 0;

qc24_host_busy_free_sp:
        sp->free(sp);

qc24_host_busy:
        return SCSI_MLQUEUE_HOST_BUSY;

qc24_target_busy:
        return SCSI_MLQUEUE_TARGET_BUSY;

qc24_fail_command:
        cmd->scsi_done(cmd);

        return 0;
}

/*
 * qla2x00_eh_wait_on_command
 *    Waits for the command to be returned by the Firmware for some
 *    max time.
 *
 * Input:
 *    cmd = Scsi Command to wait on.
 *
 * Return:
 *    Not Found : 0
 *    Found : 1
 */
static int
qla2x00_eh_wait_on_command(struct scsi_cmnd *cmd)
{
#define ABORT_POLLING_PERIOD    1000
#define ABORT_WAIT_ITER         ((2 * 1000) / (ABORT_POLLING_PERIOD))
        unsigned long wait_iter = ABORT_WAIT_ITER;
        scsi_qla_host_t *vha = shost_priv(cmd->device->host);
        struct qla_hw_data *ha = vha->hw;
        int ret = QLA_SUCCESS;

        if (unlikely(pci_channel_offline(ha->pdev)) || ha->flags.eeh_busy) {
                ql_dbg(ql_dbg_taskm, vha, 0x8005,
                    "Return:eh_wait.\n");
                return ret;
        }

        while (CMD_SP(cmd) && wait_iter--) {
                msleep(ABORT_POLLING_PERIOD);
        }
        if (CMD_SP(cmd))
                ret = QLA_FUNCTION_FAILED;

        return ret;
}

/*
 * qla2x00_wait_for_hba_online
 *    Wait till the HBA is online after going through
 *    <= MAX_RETRIES_OF_ISP_ABORT  or
 *    finally HBA is disabled ie marked offline
 *
 * Input:
 *     ha - pointer to host adapter structure
 *
 * Note:
 *    Does context switching-Release SPIN_LOCK
 *    (if any) before calling this routine.
 *
 * Return:
 *    Success (Adapter is online) : 0
 *    Failed  (Adapter is offline/disabled) : 1
 */
int
qla2x00_wait_for_hba_online(scsi_qla_host_t *vha)
{
        int             return_status;
        unsigned long   wait_online;
        struct qla_hw_data *ha = vha->hw;
        scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);

        wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
        while (((test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags)) ||
            test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags) ||
            test_bit(ISP_ABORT_RETRY, &base_vha->dpc_flags) ||
            ha->dpc_active) && time_before(jiffies, wait_online)) {

                msleep(1000);
        }
        if (base_vha->flags.online)
                return_status = QLA_SUCCESS;
        else
                return_status = QLA_FUNCTION_FAILED;

        return (return_status);
}

static inline int test_fcport_count(scsi_qla_host_t *vha)
{
        struct qla_hw_data *ha = vha->hw;
        unsigned long flags;
        int res;

        spin_lock_irqsave(&ha->tgt.sess_lock, flags);
        ql_dbg(ql_dbg_init, vha, 0x00ec,
            "tgt %p, fcport_count=%d\n",
            vha, vha->fcport_count);
        res = (vha->fcport_count == 0);
        spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);

        return res;
}

/*
 * qla2x00_wait_for_sess_deletion can only be called from remove_one.
 * it has dependency on UNLOADING flag to stop device discovery
 */
void
qla2x00_wait_for_sess_deletion(scsi_qla_host_t *vha)
{
        qla2x00_mark_all_devices_lost(vha, 0);

        wait_event_timeout(vha->fcport_waitQ, test_fcport_count(vha), 10*HZ);
}

/*
 * qla2x00_wait_for_hba_ready
 * Wait till the HBA is ready before doing driver unload
 *
 * Input:
 *     ha - pointer to host adapter structure
 *
 * Note:
 *    Does context switching-Release SPIN_LOCK
 *    (if any) before calling this routine.
 *
 */
static void
qla2x00_wait_for_hba_ready(scsi_qla_host_t *vha)
{
        struct qla_hw_data *ha = vha->hw;
        scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);

        while ((qla2x00_reset_active(vha) || ha->dpc_active ||
                ha->flags.mbox_busy) ||
               test_bit(FX00_RESET_RECOVERY, &vha->dpc_flags) ||
               test_bit(FX00_TARGET_SCAN, &vha->dpc_flags)) {
                if (test_bit(UNLOADING, &base_vha->dpc_flags))
                        break;
                msleep(1000);
        }
}

int
qla2x00_wait_for_chip_reset(scsi_qla_host_t *vha)
{
        int             return_status;
        unsigned long   wait_reset;
        struct qla_hw_data *ha = vha->hw;
        scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);

        wait_reset = jiffies + (MAX_LOOP_TIMEOUT * HZ);
        while (((test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags)) ||
            test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags) ||
            test_bit(ISP_ABORT_RETRY, &base_vha->dpc_flags) ||
            ha->dpc_active) && time_before(jiffies, wait_reset)) {

                msleep(1000);

                if (!test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags) &&
                    ha->flags.chip_reset_done)
                        break;
        }
        if (ha->flags.chip_reset_done)
                return_status = QLA_SUCCESS;
        else
                return_status = QLA_FUNCTION_FAILED;

        return return_status;
}

static int
sp_get(struct srb *sp)
{
        if (!refcount_inc_not_zero((refcount_t*)&sp->ref_count))
                /* kref get fail */
                return ENXIO;
        else
                return 0;
}

#define ISP_REG_DISCONNECT 0xffffffffU
/**************************************************************************
* qla2x00_isp_reg_stat
*
* Description:
*       Read the host status register of ISP before aborting the command.
*
* Input:
*       ha = pointer to host adapter structure.
*
*
* Returns:
*       Either true or false.
*
* Note: Return true if there is register disconnect.
**************************************************************************/
static inline
uint32_t qla2x00_isp_reg_stat(struct qla_hw_data *ha)
{
        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
        struct device_reg_82xx __iomem *reg82 = &ha->iobase->isp82;

        if (IS_P3P_TYPE(ha))
                return ((RD_REG_DWORD(&reg82->host_int)) == ISP_REG_DISCONNECT);
        else
                return ((RD_REG_DWORD(&reg->host_status)) ==
                        ISP_REG_DISCONNECT);
}

/**************************************************************************
* qla2xxx_eh_abort
*
* Description:
*    The abort function will abort the specified command.
*
* Input:
*    cmd = Linux SCSI command packet to be aborted.
*
* Returns:
*    Either SUCCESS or FAILED.
*
* Note:
*    Only return FAILED if command not returned by firmware.
**************************************************************************/
static int
qla2xxx_eh_abort(struct scsi_cmnd *cmd)
{
        scsi_qla_host_t *vha = shost_priv(cmd->device->host);
        srb_t *sp;
        int ret;
        unsigned int id;
        uint64_t lun;
        unsigned long flags;
        int rval, wait = 0;
        struct qla_hw_data *ha = vha->hw;
        struct qla_qpair *qpair;

        if (qla2x00_isp_reg_stat(ha)) {
                ql_log(ql_log_info, vha, 0x8042,
                    "PCI/Register disconnect, exiting.\n");
                return FAILED;
        }

        ret = fc_block_scsi_eh(cmd);
        if (ret != 0)
                return ret;
        ret = SUCCESS;

        sp = (srb_t *) CMD_SP(cmd);
        if (!sp)
                return SUCCESS;

        qpair = sp->qpair;
        if (!qpair)
                return SUCCESS;

        spin_lock_irqsave(qpair->qp_lock_ptr, flags);
        if (!CMD_SP(cmd)) {
                /* there's a chance an interrupt could clear
                   the ptr as part of done & free */
                spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
                return SUCCESS;
        }

        if (sp_get(sp)){
                /* ref_count is already 0 */
                spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
                return SUCCESS;
        }
        spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);

        id = cmd->device->id;
        lun = cmd->device->lun;

        ql_dbg(ql_dbg_taskm, vha, 0x8002,
            "Aborting from RISC nexus=%ld:%d:%llu sp=%p cmd=%p handle=%x\n",
            vha->host_no, id, lun, sp, cmd, sp->handle);

        /* Get a reference to the sp and drop the lock.*/

        rval = ha->isp_ops->abort_command(sp);
        if (rval) {
                if (rval == QLA_FUNCTION_PARAMETER_ERROR)
                        ret = SUCCESS;
                else
                        ret = FAILED;

                ql_dbg(ql_dbg_taskm, vha, 0x8003,
                    "Abort command mbx failed cmd=%p, rval=%x.\n", cmd, rval);
        } else {
                ql_dbg(ql_dbg_taskm, vha, 0x8004,
                    "Abort command mbx success cmd=%p.\n", cmd);
                wait = 1;
        }

        spin_lock_irqsave(qpair->qp_lock_ptr, flags);
        /*
         * Clear the slot in the oustanding_cmds array if we can't find the
         * command to reclaim the resources.
         */
        if (rval == QLA_FUNCTION_PARAMETER_ERROR)
                vha->req->outstanding_cmds[sp->handle] = NULL;

        /*
         * sp->done will do ref_count--
         * sp_get() took an extra count above
         */
        sp->done(sp, DID_RESET << 16);

        /* Did the command return during mailbox execution? */
        if (ret == FAILED && !CMD_SP(cmd))
                ret = SUCCESS;

        if (!CMD_SP(cmd))
                wait = 0;

        spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);

        /* Wait for the command to be returned. */
        if (wait) {
                if (qla2x00_eh_wait_on_command(cmd) != QLA_SUCCESS) {
                        ql_log(ql_log_warn, vha, 0x8006,
                            "Abort handler timed out cmd=%p.\n", cmd);
                        ret = FAILED;
                }
        }

        ql_log(ql_log_info, vha, 0x801c,
            "Abort command issued nexus=%ld:%d:%llu --  %d %x.\n",
            vha->host_no, id, lun, wait, ret);

        return ret;
}

int
qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *vha, unsigned int t,
        uint64_t l, enum nexus_wait_type type)
{
        int cnt, match, status;
        unsigned long flags;
        struct qla_hw_data *ha = vha->hw;
        struct req_que *req;
        srb_t *sp;
        struct scsi_cmnd *cmd;

        status = QLA_SUCCESS;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        req = vha->req;
        for (cnt = 1; status == QLA_SUCCESS &&
                cnt < req->num_outstanding_cmds; cnt++) {
                sp = req->outstanding_cmds[cnt];
                if (!sp)
                        continue;
                if (sp->type != SRB_SCSI_CMD)
                        continue;
                if (vha->vp_idx != sp->vha->vp_idx)
                        continue;
                match = 0;
                cmd = GET_CMD_SP(sp);
                switch (type) {
                case WAIT_HOST:
                        match = 1;
                        break;
                case WAIT_TARGET:
                        match = cmd->device->id == t;
                        break;
                case WAIT_LUN:
                        match = (cmd->device->id == t &&
                                cmd->device->lun == l);
                        break;
                }
                if (!match)
                        continue;

                spin_unlock_irqrestore(&ha->hardware_lock, flags);
                status = qla2x00_eh_wait_on_command(cmd);
                spin_lock_irqsave(&ha->hardware_lock, flags);
        }
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        return status;
}

static char *reset_errors[] = {
        "HBA not online",
        "HBA not ready",
        "Task management failed",
        "Waiting for command completions",
};

static int
__qla2xxx_eh_generic_reset(char *name, enum nexus_wait_type type,
    struct scsi_cmnd *cmd, int (*do_reset)(struct fc_port *, uint64_t, int))
{
        scsi_qla_host_t *vha = shost_priv(cmd->device->host);
        fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
        int err;

        if (!fcport) {
                return FAILED;
        }

        err = fc_block_scsi_eh(cmd);
        if (err != 0)
                return err;

        ql_log(ql_log_info, vha, 0x8009,
            "%s RESET ISSUED nexus=%ld:%d:%llu cmd=%p.\n", name, vha->host_no,
            cmd->device->id, cmd->device->lun, cmd);

        err = 0;
        if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) {
                ql_log(ql_log_warn, vha, 0x800a,
                    "Wait for hba online failed for cmd=%p.\n", cmd);
                goto eh_reset_failed;
        }
        err = 2;
        if (do_reset(fcport, cmd->device->lun, cmd->request->cpu + 1)
                != QLA_SUCCESS) {
                ql_log(ql_log_warn, vha, 0x800c,
                    "do_reset failed for cmd=%p.\n", cmd);
                goto eh_reset_failed;
        }
        err = 3;
        if (qla2x00_eh_wait_for_pending_commands(vha, cmd->device->id,
            cmd->device->lun, type) != QLA_SUCCESS) {
                ql_log(ql_log_warn, vha, 0x800d,
                    "wait for pending cmds failed for cmd=%p.\n", cmd);
                goto eh_reset_failed;
        }

        ql_log(ql_log_info, vha, 0x800e,
            "%s RESET SUCCEEDED nexus:%ld:%d:%llu cmd=%p.\n", name,
            vha->host_no, cmd->device->id, cmd->device->lun, cmd);

        return SUCCESS;

eh_reset_failed:
        ql_log(ql_log_info, vha, 0x800f,
            "%s RESET FAILED: %s nexus=%ld:%d:%llu cmd=%p.\n", name,
            reset_errors[err], vha->host_no, cmd->device->id, cmd->device->lun,
            cmd);
        return FAILED;
}

static int
qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
{
        scsi_qla_host_t *vha = shost_priv(cmd->device->host);
        struct qla_hw_data *ha = vha->hw;

        if (qla2x00_isp_reg_stat(ha)) {
                ql_log(ql_log_info, vha, 0x803e,
                    "PCI/Register disconnect, exiting.\n");
                return FAILED;
        }

        return __qla2xxx_eh_generic_reset("DEVICE", WAIT_LUN, cmd,
            ha->isp_ops->lun_reset);
}

static int
qla2xxx_eh_target_reset(struct scsi_cmnd *cmd)
{
        scsi_qla_host_t *vha = shost_priv(cmd->device->host);
        struct qla_hw_data *ha = vha->hw;

        if (qla2x00_isp_reg_stat(ha)) {
                ql_log(ql_log_info, vha, 0x803f,
                    "PCI/Register disconnect, exiting.\n");
                return FAILED;
        }

        return __qla2xxx_eh_generic_reset("TARGET", WAIT_TARGET, cmd,
            ha->isp_ops->target_reset);
}

/**************************************************************************
* qla2xxx_eh_bus_reset
*
* Description:
*    The bus reset function will reset the bus and abort any executing
*    commands.
*
* Input:
*    cmd = Linux SCSI command packet of the command that cause the
*          bus reset.
*
* Returns:
*    SUCCESS/FAILURE (defined as macro in scsi.h).
*
**************************************************************************/
static int
qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
{
        scsi_qla_host_t *vha = shost_priv(cmd->device->host);
        fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
        int ret = FAILED;
        unsigned int id;
        uint64_t lun;
        struct qla_hw_data *ha = vha->hw;

        if (qla2x00_isp_reg_stat(ha)) {
                ql_log(ql_log_info, vha, 0x8040,
                    "PCI/Register disconnect, exiting.\n");
                return FAILED;
        }

        id = cmd->device->id;
        lun = cmd->device->lun;

        if (!fcport) {
                return ret;
        }

        ret = fc_block_scsi_eh(cmd);
        if (ret != 0)
                return ret;
        ret = FAILED;

        ql_log(ql_log_info, vha, 0x8012,
            "BUS RESET ISSUED nexus=%ld:%d:%llu.\n", vha->host_no, id, lun);

        if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) {
                ql_log(ql_log_fatal, vha, 0x8013,
                    "Wait for hba online failed board disabled.\n");
                goto eh_bus_reset_done;
        }

        if (qla2x00_loop_reset(vha) == QLA_SUCCESS)
                ret = SUCCESS;

        if (ret == FAILED)
                goto eh_bus_reset_done;

        /* Flush outstanding commands. */
        if (qla2x00_eh_wait_for_pending_commands(vha, 0, 0, WAIT_HOST) !=
            QLA_SUCCESS) {
                ql_log(ql_log_warn, vha, 0x8014,
                    "Wait for pending commands failed.\n");
                ret = FAILED;
        }

eh_bus_reset_done:
        ql_log(ql_log_warn, vha, 0x802b,
            "BUS RESET %s nexus=%ld:%d:%llu.\n",
            (ret == FAILED) ? "FAILED" : "SUCCEEDED", vha->host_no, id, lun);

        return ret;
}

/**************************************************************************
* qla2xxx_eh_host_reset
*
* Description:
*    The reset function will reset the Adapter.
*
* Input:
*      cmd = Linux SCSI command packet of the command that cause the
*            adapter reset.
*
* Returns:
*      Either SUCCESS or FAILED.
*
* Note:
**************************************************************************/
static int
qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
{
        scsi_qla_host_t *vha = shost_priv(cmd->device->host);
        struct qla_hw_data *ha = vha->hw;
        int ret = FAILED;
        unsigned int id;
        uint64_t lun;
        scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);

        if (qla2x00_isp_reg_stat(ha)) {
                ql_log(ql_log_info, vha, 0x8041,
                    "PCI/Register disconnect, exiting.\n");
                schedule_work(&ha->board_disable);
                return SUCCESS;
        }

        id = cmd->device->id;
        lun = cmd->device->lun;

        ql_log(ql_log_info, vha, 0x8018,
            "ADAPTER RESET ISSUED nexus=%ld:%d:%llu.\n", vha->host_no, id, lun);

        /*
         * No point in issuing another reset if one is active.  Also do not
         * attempt a reset if we are updating flash.
         */
        if (qla2x00_reset_active(vha) || ha->optrom_state != QLA_SWAITING)
                goto eh_host_reset_lock;

        if (vha != base_vha) {
                if (qla2x00_vp_abort_isp(vha))
                        goto eh_host_reset_lock;
        } else {
                if (IS_P3P_TYPE(vha->hw)) {
                        if (!qla82xx_fcoe_ctx_reset(vha)) {
                                /* Ctx reset success */
                                ret = SUCCESS;
                                goto eh_host_reset_lock;
                        }
                        /* fall thru if ctx reset failed */
                }
                if (ha->wq)
                        flush_workqueue(ha->wq);

                set_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
                if (ha->isp_ops->abort_isp(base_vha)) {
                        clear_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
                        /* failed. schedule dpc to try */
                        set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);

                        if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) {
                                ql_log(ql_log_warn, vha, 0x802a,
                                    "wait for hba online failed.\n");
                                goto eh_host_reset_lock;
                        }
                }
                clear_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
        }

        /* Waiting for command to be returned to OS.*/
        if (qla2x00_eh_wait_for_pending_commands(vha, 0, 0, WAIT_HOST) ==
                QLA_SUCCESS)
                ret = SUCCESS;

eh_host_reset_lock:
        ql_log(ql_log_info, vha, 0x8017,
            "ADAPTER RESET %s nexus=%ld:%d:%llu.\n",
            (ret == FAILED) ? "FAILED" : "SUCCEEDED", vha->host_no, id, lun);

        return ret;
}

/*
* qla2x00_loop_reset
*      Issue loop reset.
*
* Input:
*      ha = adapter block pointer.
*
* Returns:
*      0 = success
*/
int
qla2x00_loop_reset(scsi_qla_host_t *vha)
{
        int ret;
        struct fc_port *fcport;
        struct qla_hw_data *ha = vha->hw;

        if (IS_QLAFX00(ha)) {
                return qlafx00_loop_reset(vha);
        }

        if (ql2xtargetreset == 1 && ha->flags.enable_target_reset) {
                list_for_each_entry(fcport, &vha->vp_fcports, list) {
                        if (fcport->port_type != FCT_TARGET)
                                continue;

                        ret = ha->isp_ops->target_reset(fcport, 0, 0);
                        if (ret != QLA_SUCCESS) {
                                ql_dbg(ql_dbg_taskm, vha, 0x802c,
                                    "Bus Reset failed: Reset=%d "
                                    "d_id=%x.\n", ret, fcport->d_id.b24);
                        }
                }
        }


        if (ha->flags.enable_lip_full_login && !IS_CNA_CAPABLE(ha)) {
                atomic_set(&vha->loop_state, LOOP_DOWN);
                atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
                qla2x00_mark_all_devices_lost(vha, 0);
                ret = qla2x00_full_login_lip(vha);
                if (ret != QLA_SUCCESS) {
                        ql_dbg(ql_dbg_taskm, vha, 0x802d,
                            "full_login_lip=%d.\n", ret);
                }
        }

        if (ha->flags.enable_lip_reset) {
                ret = qla2x00_lip_reset(vha);
                if (ret != QLA_SUCCESS)
                        ql_dbg(ql_dbg_taskm, vha, 0x802e,
                            "lip_reset failed (%d).\n", ret);
        }

        /* Issue marker command only when we are going to start the I/O */
        vha->marker_needed = 1;

        return QLA_SUCCESS;
}

static void
__qla2x00_abort_all_cmds(struct qla_qpair *qp, int res)
{
        int cnt;
        unsigned long flags;
        srb_t *sp;
        scsi_qla_host_t *vha = qp->vha;
        struct qla_hw_data *ha = vha->hw;
        struct req_que *req;
        struct qla_tgt *tgt = vha->vha_tgt.qla_tgt;
        struct qla_tgt_cmd *cmd;

        if (!ha->req_q_map)
                return;
        spin_lock_irqsave(qp->qp_lock_ptr, flags);
        req = qp->req;
        for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++) {
                sp = req->outstanding_cmds[cnt];
                if (sp) {
                        req->outstanding_cmds[cnt] = NULL;
                        switch (sp->cmd_type) {
                        case TYPE_SRB:
                                if (sp->type == SRB_NVME_CMD ||
                                    sp->type == SRB_NVME_LS) {
                                        if (!sp_get(sp)) {
                                                /* got sp */
                                                spin_unlock_irqrestore
                                                        (qp->qp_lock_ptr,
                                                         flags);
                                                qla_nvme_abort(ha, sp, res);
                                                spin_lock_irqsave
                                                        (qp->qp_lock_ptr, flags);
                                        }
                                } else if (GET_CMD_SP(sp) &&
                                    !ha->flags.eeh_busy &&
                                    (!test_bit(ABORT_ISP_ACTIVE,
                                        &vha->dpc_flags)) &&
                                    !qla2x00_isp_reg_stat(ha) &&
                                    (sp->type == SRB_SCSI_CMD)) {
                                        /*
                                         * Don't abort commands in adapter
                                         * during EEH recovery as it's not
                                         * accessible/responding.
                                         *
                                         * Get a reference to the sp and drop
                                         * the lock. The reference ensures this
                                         * sp->done() call and not the call in
                                         * qla2xxx_eh_abort() ends the SCSI cmd
                                         * (with result 'res').
                                         */
                                        if (!sp_get(sp)) {
                                                spin_unlock_irqrestore
                                                        (qp->qp_lock_ptr, flags);
                                                qla2xxx_eh_abort(
                                                        GET_CMD_SP(sp));
                                                spin_lock_irqsave
                                                        (qp->qp_lock_ptr, flags);
                                        }
                                }
                                sp->done(sp, res);
                                break;
                        case TYPE_TGT_CMD:
                                if (!vha->hw->tgt.tgt_ops || !tgt ||
                                    qla_ini_mode_enabled(vha)) {
                                        ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003,
                                            "HOST-ABORT-HNDLR: dpc_flags=%lx. Target mode disabled\n",
                                            vha->dpc_flags);
                                        continue;
                                }
                                cmd = (struct qla_tgt_cmd *)sp;
                                qlt_abort_cmd_on_host_reset(cmd->vha, cmd);
                                break;
                        case TYPE_TGT_TMCMD:
                                /*
                                 * Currently, only ABTS response gets on the
                                 * outstanding_cmds[]
                                 */
                                ha->tgt.tgt_ops->free_mcmd(
                                   (struct qla_tgt_mgmt_cmd *)sp);
                                break;
                        default:
                                break;
                        }
                }
        }
        spin_unlock_irqrestore(qp->qp_lock_ptr, flags);
}

void
qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
{
        int que;
        struct qla_hw_data *ha = vha->hw;

        __qla2x00_abort_all_cmds(ha->base_qpair, res);

        for (que = 0; que < ha->max_qpairs; que++) {
                if (!ha->queue_pair_map[que])
                        continue;

                __qla2x00_abort_all_cmds(ha->queue_pair_map[que], res);
        }
}

static int
qla2xxx_slave_alloc(struct scsi_device *sdev)
{
        struct fc_rport *rport = starget_to_rport(scsi_target(sdev));

        if (!rport || fc_remote_port_chkready(rport))
                return -ENXIO;

        sdev->hostdata = *(fc_port_t **)rport->dd_data;

        return 0;
}

static int
qla2xxx_slave_configure(struct scsi_device *sdev)
{
        scsi_qla_host_t *vha = shost_priv(sdev->host);
        struct req_que *req = vha->req;

        if (IS_T10_PI_CAPABLE(vha->hw))
                blk_queue_update_dma_alignment(sdev->request_queue, 0x7);

        scsi_change_queue_depth(sdev, req->max_q_depth);
        return 0;
}

static void
qla2xxx_slave_destroy(struct scsi_device *sdev)
{
        sdev->hostdata = NULL;
}

/**
 * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
 * @ha: HA context
 *
 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
 * supported addressing method.
 */
static void
qla2x00_config_dma_addressing(struct qla_hw_data *ha)
{
        /* Assume a 32bit DMA mask. */
        ha->flags.enable_64bit_addressing = 0;

        if (!dma_set_mask(&ha->pdev->dev, DMA_BIT_MASK(64))) {
                /* Any upper-dword bits set? */
                if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
                    !pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
                        /* Ok, a 64bit DMA mask is applicable. */
                        ha->flags.enable_64bit_addressing = 1;
                        ha->isp_ops->calc_req_entries = qla2x00_calc_iocbs_64;
                        ha->isp_ops->build_iocbs = qla2x00_build_scsi_iocbs_64;
                        return;
                }
        }

        dma_set_mask(&ha->pdev->dev, DMA_BIT_MASK(32));
        pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(32));
}

static void
qla2x00_enable_intrs(struct qla_hw_data *ha)
{
        unsigned long flags = 0;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        ha->interrupts_on = 1;
        /* enable risc and host interrupts */
        WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
        RD_REG_WORD(&reg->ictrl);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

}

static void
qla2x00_disable_intrs(struct qla_hw_data *ha)
{
        unsigned long flags = 0;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        ha->interrupts_on = 0;
        /* disable risc and host interrupts */
        WRT_REG_WORD(&reg->ictrl, 0);
        RD_REG_WORD(&reg->ictrl);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
}

static void
qla24xx_enable_intrs(struct qla_hw_data *ha)
{
        unsigned long flags = 0;
        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        ha->interrupts_on = 1;
        WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
        RD_REG_DWORD(&reg->ictrl);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
}

static void
qla24xx_disable_intrs(struct qla_hw_data *ha)
{
        unsigned long flags = 0;
        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

        if (IS_NOPOLLING_TYPE(ha))
                return;
        spin_lock_irqsave(&ha->hardware_lock, flags);
        ha->interrupts_on = 0;
        WRT_REG_DWORD(&reg->ictrl, 0);
        RD_REG_DWORD(&reg->ictrl);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
}

static int
qla2x00_iospace_config(struct qla_hw_data *ha)
{
        resource_size_t pio;
        uint16_t msix;

        if (pci_request_selected_regions(ha->pdev, ha->bars,
            QLA2XXX_DRIVER_NAME)) {
                ql_log_pci(ql_log_fatal, ha->pdev, 0x0011,
                    "Failed to reserve PIO/MMIO regions (%s), aborting.\n",
                    pci_name(ha->pdev));
                goto iospace_error_exit;
        }
        if (!(ha->bars & 1))
                goto skip_pio;

        /* We only need PIO for Flash operations on ISP2312 v2 chips. */
        pio = pci_resource_start(ha->pdev, 0);
        if (pci_resource_flags(ha->pdev, 0) & IORESOURCE_IO) {
                if (pci_resource_len(ha->pdev, 0) < MIN_IOBASE_LEN) {
                        ql_log_pci(ql_log_warn, ha->pdev, 0x0012,
                            "Invalid pci I/O region size (%s).\n",
                            pci_name(ha->pdev));
                        pio = 0;
                }
        } else {
                ql_log_pci(ql_log_warn, ha->pdev, 0x0013,
                    "Region #0 no a PIO resource (%s).\n",
                    pci_name(ha->pdev));
                pio = 0;
        }
        ha->pio_address = pio;
        ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0014,
            "PIO address=%llu.\n",
            (unsigned long long)ha->pio_address);

skip_pio:
        /* Use MMIO operations for all accesses. */
        if (!(pci_resource_flags(ha->pdev, 1) & IORESOURCE_MEM)) {
                ql_log_pci(ql_log_fatal, ha->pdev, 0x0015,
                    "Region #1 not an MMIO resource (%s), aborting.\n",
                    pci_name(ha->pdev));
                goto iospace_error_exit;
        }
        if (pci_resource_len(ha->pdev, 1) < MIN_IOBASE_LEN) {
                ql_log_pci(ql_log_fatal, ha->pdev, 0x0016,
                    "Invalid PCI mem region size (%s), aborting.\n",
                    pci_name(ha->pdev));
                goto iospace_error_exit;
        }

        ha->iobase = ioremap(pci_resource_start(ha->pdev, 1), MIN_IOBASE_LEN);
        if (!ha->iobase) {
                ql_log_pci(ql_log_fatal, ha->pdev, 0x0017,
                    "Cannot remap MMIO (%s), aborting.\n",
                    pci_name(ha->pdev));
                goto iospace_error_exit;
        }

        /* Determine queue resources */
        ha->max_req_queues = ha->max_rsp_queues = 1;
        ha->msix_count = QLA_BASE_VECTORS;
        if (!ql2xmqsupport || !ql2xnvmeenable ||
            (!IS_QLA25XX(ha) && !IS_QLA81XX(ha)))
                goto mqiobase_exit;

        ha->mqiobase = ioremap(pci_resource_start(ha->pdev, 3),
                        pci_resource_len(ha->pdev, 3));
        if (ha->mqiobase) {
                ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0018,
                    "MQIO Base=%p.\n", ha->mqiobase);
                /* Read MSIX vector size of the board */
                pci_read_config_word(ha->pdev, QLA_PCI_MSIX_CONTROL, &msix);
                ha->msix_count = msix + 1;
                /* Max queues are bounded by available msix vectors */
                /* MB interrupt uses 1 vector */
                ha->max_req_queues = ha->msix_count - 1;
                ha->max_rsp_queues = ha->max_req_queues;
                /* Queue pairs is the max value minus the base queue pair */
                ha->max_qpairs = ha->max_rsp_queues - 1;
                ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0188,
                    "Max no of queues pairs: %d.\n", ha->max_qpairs);

                ql_log_pci(ql_log_info, ha->pdev, 0x001a,
                    "MSI-X vector count: %d.\n", ha->msix_count);
        } else
                ql_log_pci(ql_log_info, ha->pdev, 0x001b,
                    "BAR 3 not enabled.\n");

mqiobase_exit:
        ql_dbg_pci(ql_dbg_init, ha->pdev, 0x001c,
            "MSIX Count: %d.\n", ha->msix_count);
        return (0);

iospace_error_exit:
        return (-ENOMEM);
}


static int
qla83xx_iospace_config(struct qla_hw_data *ha)
{
        uint16_t msix;

        if (pci_request_selected_regions(ha->pdev, ha->bars,
            QLA2XXX_DRIVER_NAME)) {
                ql_log_pci(ql_log_fatal, ha->pdev, 0x0117,
                    "Failed to reserve PIO/MMIO regions (%s), aborting.\n",
                    pci_name(ha->pdev));

                goto iospace_error_exit;
        }

        /* Use MMIO operations for all accesses. */
        if (!(pci_resource_flags(ha->pdev, 0) & IORESOURCE_MEM)) {
                ql_log_pci(ql_log_warn, ha->pdev, 0x0118,
                    "Invalid pci I/O region size (%s).\n",
                    pci_name(ha->pdev));
                goto iospace_error_exit;
        }
        if (pci_resource_len(ha->pdev, 0) < MIN_IOBASE_LEN) {
                ql_log_pci(ql_log_warn, ha->pdev, 0x0119,
                    "Invalid PCI mem region size (%s), aborting\n",
                        pci_name(ha->pdev));
                goto iospace_error_exit;
        }

        ha->iobase = ioremap(pci_resource_start(ha->pdev, 0), MIN_IOBASE_LEN);
        if (!ha->iobase) {
                ql_log_pci(ql_log_fatal, ha->pdev, 0x011a,
                    "Cannot remap MMIO (%s), aborting.\n",
                    pci_name(ha->pdev));
                goto iospace_error_exit;
        }

        /* 64bit PCI BAR - BAR2 will correspoond to region 4 */
        /* 83XX 26XX always use MQ type access for queues
         * - mbar 2, a.k.a region 4 */
        ha->max_req_queues = ha->max_rsp_queues = 1;
        ha->msix_count = QLA_BASE_VECTORS;
        ha->mqiobase = ioremap(pci_resource_start(ha->pdev, 4),
                        pci_resource_len(ha->pdev, 4));

        if (!ha->mqiobase) {
                ql_log_pci(ql_log_fatal, ha->pdev, 0x011d,
                    "BAR2/region4 not enabled\n");
                goto mqiobase_exit;
        }

        ha->msixbase = ioremap(pci_resource_start(ha->pdev, 2),
                        pci_resource_len(ha->pdev, 2));
        if (ha->msixbase) {
                /* Read MSIX vector size of the board */
                pci_read_config_word(ha->pdev,
                    QLA_83XX_PCI_MSIX_CONTROL, &msix);
                ha->msix_count = (msix & PCI_MSIX_FLAGS_QSIZE)  + 1;
                /*
                 * By default, driver uses at least two msix vectors
                 * (default & rspq)
                 */
                if (ql2xmqsupport || ql2xnvmeenable) {
                        /* MB interrupt uses 1 vector */
                        ha->max_req_queues = ha->msix_count - 1;

                        /* ATIOQ needs 1 vector. That's 1 less QPair */
                        if (QLA_TGT_MODE_ENABLED())
                                ha->max_req_queues--;

                        ha->max_rsp_queues = ha->max_req_queues;

                        /* Queue pairs is the max value minus
                         * the base queue pair */
                        ha->max_qpairs = ha->max_req_queues - 1;
                        ql_dbg_pci(ql_dbg_init, ha->pdev, 0x00e3,
                            "Max no of queues pairs: %d.\n", ha->max_qpairs);
                }
                ql_log_pci(ql_log_info, ha->pdev, 0x011c,
                    "MSI-X vector count: %d.\n", ha->msix_count);
        } else
                ql_log_pci(ql_log_info, ha->pdev, 0x011e,
                    "BAR 1 not enabled.\n");

mqiobase_exit:
        ql_dbg_pci(ql_dbg_init, ha->pdev, 0x011f,
            "MSIX Count: %d.\n", ha->msix_count);
        return 0;

iospace_error_exit:
        return -ENOMEM;
}

static struct isp_operations qla2100_isp_ops = {
        .pci_config             = qla2100_pci_config,
        .reset_chip             = qla2x00_reset_chip,
        .chip_diag              = qla2x00_chip_diag,
        .config_rings           = qla2x00_config_rings,
        .reset_adapter          = qla2x00_reset_adapter,
        .nvram_config           = qla2x00_nvram_config,
        .update_fw_options      = qla2x00_update_fw_options,
        .load_risc              = qla2x00_load_risc,
        .pci_info_str           = qla2x00_pci_info_str,
        .fw_version_str         = qla2x00_fw_version_str,
        .intr_handler           = qla2100_intr_handler,
        .enable_intrs           = qla2x00_enable_intrs,
        .disable_intrs          = qla2x00_disable_intrs,
        .abort_command          = qla2x00_abort_command,
        .target_reset           = qla2x00_abort_target,
        .lun_reset              = qla2x00_lun_reset,
        .fabric_login           = qla2x00_login_fabric,
        .fabric_logout          = qla2x00_fabric_logout,
        .calc_req_entries       = qla2x00_calc_iocbs_32,
        .build_iocbs            = qla2x00_build_scsi_iocbs_32,
        .prep_ms_iocb           = qla2x00_prep_ms_iocb,
        .prep_ms_fdmi_iocb      = qla2x00_prep_ms_fdmi_iocb,
        .read_nvram             = qla2x00_read_nvram_data,
        .write_nvram            = qla2x00_write_nvram_data,
        .fw_dump                = qla2100_fw_dump,
        .beacon_on              = NULL,
        .beacon_off             = NULL,
        .beacon_blink           = NULL,
        .read_optrom            = qla2x00_read_optrom_data,
        .write_optrom           = qla2x00_write_optrom_data,
        .get_flash_version      = qla2x00_get_flash_version,
        .start_scsi             = qla2x00_start_scsi,
        .start_scsi_mq          = NULL,
        .abort_isp              = qla2x00_abort_isp,
        .iospace_config         = qla2x00_iospace_config,
        .initialize_adapter     = qla2x00_initialize_adapter,
};

static struct isp_operations qla2300_isp_ops = {
        .pci_config             = qla2300_pci_config,
        .reset_chip             = qla2x00_reset_chip,
        .chip_diag              = qla2x00_chip_diag,
        .config_rings           = qla2x00_config_rings,
        .reset_adapter          = qla2x00_reset_adapter,
        .nvram_config           = qla2x00_nvram_config,
        .update_fw_options      = qla2x00_update_fw_options,
        .load_risc              = qla2x00_load_risc,
        .pci_info_str           = qla2x00_pci_info_str,
        .fw_version_str         = qla2x00_fw_version_str,
        .intr_handler           = qla2300_intr_handler,
        .enable_intrs           = qla2x00_enable_intrs,
        .disable_intrs          = qla2x00_disable_intrs,
        .abort_command          = qla2x00_abort_command,
        .target_reset           = qla2x00_abort_target,
        .lun_reset              = qla2x00_lun_reset,
        .fabric_login           = qla2x00_login_fabric,
        .fabric_logout          = qla2x00_fabric_logout,
        .calc_req_entries       = qla2x00_calc_iocbs_32,
        .build_iocbs            = qla2x00_build_scsi_iocbs_32,
        .prep_ms_iocb           = qla2x00_prep_ms_iocb,
        .prep_ms_fdmi_iocb      = qla2x00_prep_ms_fdmi_iocb,
        .read_nvram             = qla2x00_read_nvram_data,
        .write_nvram            = qla2x00_write_nvram_data,
        .fw_dump                = qla2300_fw_dump,
        .beacon_on              = qla2x00_beacon_on,
        .beacon_off             = qla2x00_beacon_off,
        .beacon_blink           = qla2x00_beacon_blink,
        .read_optrom            = qla2x00_read_optrom_data,
        .write_optrom           = qla2x00_write_optrom_data,
        .get_flash_version      = qla2x00_get_flash_version,
        .start_scsi             = qla2x00_start_scsi,
        .start_scsi_mq          = NULL,
        .abort_isp              = qla2x00_abort_isp,
        .iospace_config         = qla2x00_iospace_config,
        .initialize_adapter     = qla2x00_initialize_adapter,
};

static struct isp_operations qla24xx_isp_ops = {
        .pci_config             = qla24xx_pci_config,
        .reset_chip             = qla24xx_reset_chip,
        .chip_diag              = qla24xx_chip_diag,
        .config_rings           = qla24xx_config_rings,
        .reset_adapter          = qla24xx_reset_adapter,
        .nvram_config           = qla24xx_nvram_config,
        .update_fw_options      = qla24xx_update_fw_options,
        .load_risc              = qla24xx_load_risc,
        .pci_info_str           = qla24xx_pci_info_str,
        .fw_version_str         = qla24xx_fw_version_str,
        .intr_handler           = qla24xx_intr_handler,
        .enable_intrs           = qla24xx_enable_intrs,
        .disable_intrs          = qla24xx_disable_intrs,
        .abort_command          = qla24xx_abort_command,
        .target_reset           = qla24xx_abort_target,
        .lun_reset              = qla24xx_lun_reset,
        .fabric_login           = qla24xx_login_fabric,
        .fabric_logout          = qla24xx_fabric_logout,
        .calc_req_entries       = NULL,
        .build_iocbs            = NULL,
        .prep_ms_iocb           = qla24xx_prep_ms_iocb,
        .prep_ms_fdmi_iocb      = qla24xx_prep_ms_fdmi_iocb,
        .read_nvram             = qla24xx_read_nvram_data,
        .write_nvram            = qla24xx_write_nvram_data,
        .fw_dump                = qla24xx_fw_dump,
        .beacon_on              = qla24xx_beacon_on,
        .beacon_off             = qla24xx_beacon_off,
        .beacon_blink           = qla24xx_beacon_blink,
        .read_optrom            = qla24xx_read_optrom_data,
        .write_optrom           = qla24xx_write_optrom_data,
        .get_flash_version      = qla24xx_get_flash_version,
        .start_scsi             = qla24xx_start_scsi,
        .start_scsi_mq          = NULL,
        .abort_isp              = qla2x00_abort_isp,
        .iospace_config         = qla2x00_iospace_config,
        .initialize_adapter     = qla2x00_initialize_adapter,
};

static struct isp_operations qla25xx_isp_ops = {
        .pci_config             = qla25xx_pci_config,
        .reset_chip             = qla24xx_reset_chip,
        .chip_diag              = qla24xx_chip_diag,
        .config_rings           = qla24xx_config_rings,
        .reset_adapter          = qla24xx_reset_adapter,
        .nvram_config           = qla24xx_nvram_config,
        .update_fw_options      = qla24xx_update_fw_options,
        .load_risc              = qla24xx_load_risc,
        .pci_info_str           = qla24xx_pci_info_str,
        .fw_version_str         = qla24xx_fw_version_str,
        .intr_handler           = qla24xx_intr_handler,
        .enable_intrs           = qla24xx_enable_intrs,
        .disable_intrs          = qla24xx_disable_intrs,
        .abort_command          = qla24xx_abort_command,
        .target_reset           = qla24xx_abort_target,
        .lun_reset              = qla24xx_lun_reset,
        .fabric_login           = qla24xx_login_fabric,
        .fabric_logout          = qla24xx_fabric_logout,
        .calc_req_entries       = NULL,
        .build_iocbs            = NULL,
        .prep_ms_iocb           = qla24xx_prep_ms_iocb,
        .prep_ms_fdmi_iocb      = qla24xx_prep_ms_fdmi_iocb,
        .read_nvram             = qla25xx_read_nvram_data,
        .write_nvram            = qla25xx_write_nvram_data,
        .fw_dump                = qla25xx_fw_dump,
        .beacon_on              = qla24xx_beacon_on,
        .beacon_off             = qla24xx_beacon_off,
        .beacon_blink           = qla24xx_beacon_blink,
        .read_optrom            = qla25xx_read_optrom_data,
        .write_optrom           = qla24xx_write_optrom_data,
        .get_flash_version      = qla24xx_get_flash_version,
        .start_scsi             = qla24xx_dif_start_scsi,
        .start_scsi_mq          = qla2xxx_dif_start_scsi_mq,
        .abort_isp              = qla2x00_abort_isp,
        .iospace_config         = qla2x00_iospace_config,
        .initialize_adapter     = qla2x00_initialize_adapter,
};

static struct isp_operations qla81xx_isp_ops = {
        .pci_config             = qla25xx_pci_config,
        .reset_chip             = qla24xx_reset_chip,
        .chip_diag              = qla24xx_chip_diag,
        .config_rings           = qla24xx_config_rings,
        .reset_adapter          = qla24xx_reset_adapter,
        .nvram_config           = qla81xx_nvram_config,
        .update_fw_options      = qla81xx_update_fw_options,
        .load_risc              = qla81xx_load_risc,
        .pci_info_str           = qla24xx_pci_info_str,
        .fw_version_str         = qla24xx_fw_version_str,
        .intr_handler           = qla24xx_intr_handler,
        .enable_intrs           = qla24xx_enable_intrs,
        .disable_intrs          = qla24xx_disable_intrs,
        .abort_command          = qla24xx_abort_command,
        .target_reset           = qla24xx_abort_target,
        .lun_reset              = qla24xx_lun_reset,
        .fabric_login           = qla24xx_login_fabric,
        .fabric_logout          = qla24xx_fabric_logout,
        .calc_req_entries       = NULL,
        .build_iocbs            = NULL,
        .prep_ms_iocb           = qla24xx_prep_ms_iocb,
        .prep_ms_fdmi_iocb      = qla24xx_prep_ms_fdmi_iocb,
        .read_nvram             = NULL,
        .write_nvram            = NULL,
        .fw_dump                = qla81xx_fw_dump,
        .beacon_on              = qla24xx_beacon_on,
        .beacon_off             = qla24xx_beacon_off,
        .beacon_blink           = qla83xx_beacon_blink,
        .read_optrom            = qla25xx_read_optrom_data,
        .write_optrom           = qla24xx_write_optrom_data,
        .get_flash_version      = qla24xx_get_flash_version,
        .start_scsi             = qla24xx_dif_start_scsi,
        .start_scsi_mq          = qla2xxx_dif_start_scsi_mq,
        .abort_isp              = qla2x00_abort_isp,
        .iospace_config         = qla2x00_iospace_config,
        .initialize_adapter     = qla2x00_initialize_adapter,
};

static struct isp_operations qla82xx_isp_ops = {
        .pci_config             = qla82xx_pci_config,
        .reset_chip             = qla82xx_reset_chip,
        .chip_diag              = qla24xx_chip_diag,
        .config_rings           = qla82xx_config_rings,
        .reset_adapter          = qla24xx_reset_adapter,
        .nvram_config           = qla81xx_nvram_config,
        .update_fw_options      = qla24xx_update_fw_options,
        .load_risc              = qla82xx_load_risc,
        .pci_info_str           = qla24xx_pci_info_str,
        .fw_version_str         = qla24xx_fw_version_str,
        .intr_handler           = qla82xx_intr_handler,
        .enable_intrs           = qla82xx_enable_intrs,
        .disable_intrs          = qla82xx_disable_intrs,
        .abort_command          = qla24xx_abort_command,
        .target_reset           = qla24xx_abort_target,
        .lun_reset              = qla24xx_lun_reset,
        .fabric_login           = qla24xx_login_fabric,
        .fabric_logout          = qla24xx_fabric_logout,
        .calc_req_entries       = NULL,
        .build_iocbs            = NULL,
        .prep_ms_iocb           = qla24xx_prep_ms_iocb,
        .prep_ms_fdmi_iocb      = qla24xx_prep_ms_fdmi_iocb,
        .read_nvram             = qla24xx_read_nvram_data,
        .write_nvram            = qla24xx_write_nvram_data,
        .fw_dump                = qla82xx_fw_dump,
        .beacon_on              = qla82xx_beacon_on,
        .beacon_off             = qla82xx_beacon_off,
        .beacon_blink           = NULL,
        .read_optrom            = qla82xx_read_optrom_data,
        .write_optrom           = qla82xx_write_optrom_data,
        .get_flash_version      = qla82xx_get_flash_version,
        .start_scsi             = qla82xx_start_scsi,
        .start_scsi_mq          = NULL,
        .abort_isp              = qla82xx_abort_isp,
        .iospace_config         = qla82xx_iospace_config,
        .initialize_adapter     = qla2x00_initialize_adapter,
};

static struct isp_operations qla8044_isp_ops = {
        .pci_config             = qla82xx_pci_config,
        .reset_chip             = qla82xx_reset_chip,
        .chip_diag              = qla24xx_chip_diag,
        .config_rings           = qla82xx_config_rings,
        .reset_adapter          = qla24xx_reset_adapter,
        .nvram_config           = qla81xx_nvram_config,
        .update_fw_options      = qla24xx_update_fw_options,
        .load_risc              = qla82xx_load_risc,
        .pci_info_str           = qla24xx_pci_info_str,
        .fw_version_str         = qla24xx_fw_version_str,
        .intr_handler           = qla8044_intr_handler,
        .enable_intrs           = qla82xx_enable_intrs,
        .disable_intrs          = qla82xx_disable_intrs,
        .abort_command          = qla24xx_abort_command,
        .target_reset           = qla24xx_abort_target,
        .lun_reset              = qla24xx_lun_reset,
        .fabric_login           = qla24xx_login_fabric,
        .fabric_logout          = qla24xx_fabric_logout,
        .calc_req_entries       = NULL,
        .build_iocbs            = NULL,
        .prep_ms_iocb           = qla24xx_prep_ms_iocb,
        .prep_ms_fdmi_iocb      = qla24xx_prep_ms_fdmi_iocb,
        .read_nvram             = NULL,
        .write_nvram            = NULL,
        .fw_dump                = qla8044_fw_dump,
        .beacon_on              = qla82xx_beacon_on,
        .beacon_off             = qla82xx_beacon_off,
        .beacon_blink           = NULL,
        .read_optrom            = qla8044_read_optrom_data,
        .write_optrom           = qla8044_write_optrom_data,
        .get_flash_version      = qla82xx_get_flash_version,
        .start_scsi             = qla82xx_start_scsi,
        .start_scsi_mq          = NULL,
        .abort_isp              = qla8044_abort_isp,
        .iospace_config         = qla82xx_iospace_config,
        .initialize_adapter     = qla2x00_initialize_adapter,
};

static struct isp_operations qla83xx_isp_ops = {
        .pci_config             = qla25xx_pci_config,
        .reset_chip             = qla24xx_reset_chip,
        .chip_diag              = qla24xx_chip_diag,
        .config_rings           = qla24xx_config_rings,
        .reset_adapter          = qla24xx_reset_adapter,
        .nvram_config           = qla81xx_nvram_config,
        .update_fw_options      = qla81xx_update_fw_options,
        .load_risc              = qla81xx_load_risc,
        .pci_info_str           = qla24xx_pci_info_str,
        .fw_version_str         = qla24xx_fw_version_str,
        .intr_handler           = qla24xx_intr_handler,
        .enable_intrs           = qla24xx_enable_intrs,
        .disable_intrs          = qla24xx_disable_intrs,
        .abort_command          = qla24xx_abort_command,
        .target_reset           = qla24xx_abort_target,
        .lun_reset              = qla24xx_lun_reset,
        .fabric_login           = qla24xx_login_fabric,
        .fabric_logout          = qla24xx_fabric_logout,
        .calc_req_entries       = NULL,
        .build_iocbs            = NULL,
        .prep_ms_iocb           = qla24xx_prep_ms_iocb,
        .prep_ms_fdmi_iocb      = qla24xx_prep_ms_fdmi_iocb,
        .read_nvram             = NULL,
        .write_nvram            = NULL,
        .fw_dump                = qla83xx_fw_dump,
        .beacon_on              = qla24xx_beacon_on,
        .beacon_off             = qla24xx_beacon_off,
        .beacon_blink           = qla83xx_beacon_blink,
        .read_optrom            = qla25xx_read_optrom_data,
        .write_optrom           = qla24xx_write_optrom_data,
        .get_flash_version      = qla24xx_get_flash_version,
        .start_scsi             = qla24xx_dif_start_scsi,
        .start_scsi_mq          = qla2xxx_dif_start_scsi_mq,
        .abort_isp              = qla2x00_abort_isp,
        .iospace_config         = qla83xx_iospace_config,
        .initialize_adapter     = qla2x00_initialize_adapter,
};

static struct isp_operations qlafx00_isp_ops = {
        .pci_config             = qlafx00_pci_config,
        .reset_chip             = qlafx00_soft_reset,
        .chip_diag              = qlafx00_chip_diag,
        .config_rings           = qlafx00_config_rings,
        .reset_adapter          = qlafx00_soft_reset,
        .nvram_config           = NULL,
        .update_fw_options      = NULL,
        .load_risc              = NULL,
        .pci_info_str           = qlafx00_pci_info_str,
        .fw_version_str         = qlafx00_fw_version_str,
        .intr_handler           = qlafx00_intr_handler,
        .enable_intrs           = qlafx00_enable_intrs,
        .disable_intrs          = qlafx00_disable_intrs,
        .abort_command          = qla24xx_async_abort_command,
        .target_reset           = qlafx00_abort_target,
        .lun_reset              = qlafx00_lun_reset,
        .fabric_login           = NULL,
        .fabric_logout          = NULL,
        .calc_req_entries       = NULL,
        .build_iocbs            = NULL,
        .prep_ms_iocb           = qla24xx_prep_ms_iocb,
        .prep_ms_fdmi_iocb      = qla24xx_prep_ms_fdmi_iocb,
        .read_nvram             = qla24xx_read_nvram_data,
        .write_nvram            = qla24xx_write_nvram_data,
        .fw_dump                = NULL,
        .beacon_on              = qla24xx_beacon_on,
        .beacon_off             = qla24xx_beacon_off,
        .beacon_blink           = NULL,
        .read_optrom            = qla24xx_read_optrom_data,
        .write_optrom           = qla24xx_write_optrom_data,
        .get_flash_version      = qla24xx_get_flash_version,
        .start_scsi             = qlafx00_start_scsi,
        .start_scsi_mq          = NULL,
        .abort_isp              = qlafx00_abort_isp,
        .iospace_config         = qlafx00_iospace_config,
        .initialize_adapter     = qlafx00_initialize_adapter,
};

static struct isp_operations qla27xx_isp_ops = {
        .pci_config             = qla25xx_pci_config,
        .reset_chip             = qla24xx_reset_chip,
        .chip_diag              = qla24xx_chip_diag,
        .config_rings           = qla24xx_config_rings,
        .reset_adapter          = qla24xx_reset_adapter,
        .nvram_config           = qla81xx_nvram_config,
        .update_fw_options      = qla81xx_update_fw_options,
        .load_risc              = qla81xx_load_risc,
        .pci_info_str           = qla24xx_pci_info_str,
        .fw_version_str         = qla24xx_fw_version_str,
        .intr_handler           = qla24xx_intr_handler,
        .enable_intrs           = qla24xx_enable_intrs,
        .disable_intrs          = qla24xx_disable_intrs,
        .abort_command          = qla24xx_abort_command,
        .target_reset           = qla24xx_abort_target,
        .lun_reset              = qla24xx_lun_reset,
        .fabric_login           = qla24xx_login_fabric,
        .fabric_logout          = qla24xx_fabric_logout,
        .calc_req_entries       = NULL,
        .build_iocbs            = NULL,
        .prep_ms_iocb           = qla24xx_prep_ms_iocb,
        .prep_ms_fdmi_iocb      = qla24xx_prep_ms_fdmi_iocb,
        .read_nvram             = NULL,
        .write_nvram            = NULL,
        .fw_dump                = qla27xx_fwdump,
        .beacon_on              = qla24xx_beacon_on,
        .beacon_off             = qla24xx_beacon_off,
        .beacon_blink           = qla83xx_beacon_blink,
        .read_optrom            = qla25xx_read_optrom_data,
        .write_optrom           = qla24xx_write_optrom_data,
        .get_flash_version      = qla24xx_get_flash_version,
        .start_scsi             = qla24xx_dif_start_scsi,
        .start_scsi_mq          = qla2xxx_dif_start_scsi_mq,
        .abort_isp              = qla2x00_abort_isp,
        .iospace_config         = qla83xx_iospace_config,
        .initialize_adapter     = qla2x00_initialize_adapter,
};

static inline void
qla2x00_set_isp_flags(struct qla_hw_data *ha)
{
        ha->device_type = DT_EXTENDED_IDS;
        switch (ha->pdev->device) {
        case PCI_DEVICE_ID_QLOGIC_ISP2100:
                ha->isp_type |= DT_ISP2100;
                ha->device_type &= ~DT_EXTENDED_IDS;
                ha->fw_srisc_address = RISC_START_ADDRESS_2100;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2200:
                ha->isp_type |= DT_ISP2200;
                ha->device_type &= ~DT_EXTENDED_IDS;
                ha->fw_srisc_address = RISC_START_ADDRESS_2100;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2300:
                ha->isp_type |= DT_ISP2300;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->fw_srisc_address = RISC_START_ADDRESS_2300;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2312:
                ha->isp_type |= DT_ISP2312;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->fw_srisc_address = RISC_START_ADDRESS_2300;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2322:
                ha->isp_type |= DT_ISP2322;
                ha->device_type |= DT_ZIO_SUPPORTED;
                if (ha->pdev->subsystem_vendor == 0x1028 &&
                    ha->pdev->subsystem_device == 0x0170)
                        ha->device_type |= DT_OEM_001;
                ha->fw_srisc_address = RISC_START_ADDRESS_2300;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP6312:
                ha->isp_type |= DT_ISP6312;
                ha->fw_srisc_address = RISC_START_ADDRESS_2300;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP6322:
                ha->isp_type |= DT_ISP6322;
                ha->fw_srisc_address = RISC_START_ADDRESS_2300;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2422:
                ha->isp_type |= DT_ISP2422;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->device_type |= DT_FWI2;
                ha->device_type |= DT_IIDMA;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2432:
                ha->isp_type |= DT_ISP2432;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->device_type |= DT_FWI2;
                ha->device_type |= DT_IIDMA;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP8432:
                ha->isp_type |= DT_ISP8432;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->device_type |= DT_FWI2;
                ha->device_type |= DT_IIDMA;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP5422:
                ha->isp_type |= DT_ISP5422;
                ha->device_type |= DT_FWI2;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP5432:
                ha->isp_type |= DT_ISP5432;
                ha->device_type |= DT_FWI2;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2532:
                ha->isp_type |= DT_ISP2532;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->device_type |= DT_FWI2;
                ha->device_type |= DT_IIDMA;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP8001:
                ha->isp_type |= DT_ISP8001;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->device_type |= DT_FWI2;
                ha->device_type |= DT_IIDMA;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP8021:
                ha->isp_type |= DT_ISP8021;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->device_type |= DT_FWI2;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                /* Initialize 82XX ISP flags */
                qla82xx_init_flags(ha);
                break;
         case PCI_DEVICE_ID_QLOGIC_ISP8044:
                ha->isp_type |= DT_ISP8044;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->device_type |= DT_FWI2;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                /* Initialize 82XX ISP flags */
                qla82xx_init_flags(ha);
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2031:
                ha->isp_type |= DT_ISP2031;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->device_type |= DT_FWI2;
                ha->device_type |= DT_IIDMA;
                ha->device_type |= DT_T10_PI;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP8031:
                ha->isp_type |= DT_ISP8031;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->device_type |= DT_FWI2;
                ha->device_type |= DT_IIDMA;
                ha->device_type |= DT_T10_PI;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISPF001:
                ha->isp_type |= DT_ISPFX00;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2071:
                ha->isp_type |= DT_ISP2071;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->device_type |= DT_FWI2;
                ha->device_type |= DT_IIDMA;
                ha->device_type |= DT_T10_PI;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2271:
                ha->isp_type |= DT_ISP2271;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->device_type |= DT_FWI2;
                ha->device_type |= DT_IIDMA;
                ha->device_type |= DT_T10_PI;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        case PCI_DEVICE_ID_QLOGIC_ISP2261:
                ha->isp_type |= DT_ISP2261;
                ha->device_type |= DT_ZIO_SUPPORTED;
                ha->device_type |= DT_FWI2;
                ha->device_type |= DT_IIDMA;
                ha->device_type |= DT_T10_PI;
                ha->fw_srisc_address = RISC_START_ADDRESS_2400;
                break;
        }

        if (IS_QLA82XX(ha))
                ha->port_no = ha->portnum & 1;
        else {
                /* Get adapter physical port no from interrupt pin register. */
                pci_read_config_byte(ha->pdev, PCI_INTERRUPT_PIN, &ha->port_no);
                if (IS_QLA27XX(ha))
                        ha->port_no--;
                else
                        ha->port_no = !(ha->port_no & 1);
        }

        ql_dbg_pci(ql_dbg_init, ha->pdev, 0x000b,
            "device_type=0x%x port=%d fw_srisc_address=0x%x.\n",
            ha->device_type, ha->port_no, ha->fw_srisc_address);
}

static void
qla2xxx_scan_start(struct Scsi_Host *shost)
{
        scsi_qla_host_t *vha = shost_priv(shost);

        if (vha->hw->flags.running_gold_fw)
                return;

        set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
        set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
        set_bit(RSCN_UPDATE, &vha->dpc_flags);
        set_bit(NPIV_CONFIG_NEEDED, &vha->dpc_flags);
}

static int
qla2xxx_scan_finished(struct Scsi_Host *shost, unsigned long time)
{
        scsi_qla_host_t *vha = shost_priv(shost);

        if (test_bit(UNLOADING, &vha->dpc_flags))
                return 1;
        if (!vha->host)
                return 1;
        if (time > vha->hw->loop_reset_delay * HZ)
                return 1;

        return atomic_read(&vha->loop_state) == LOOP_READY;
}

static void qla2x00_iocb_work_fn(struct work_struct *work)
{
        struct scsi_qla_host *vha = container_of(work,
                struct scsi_qla_host, iocb_work);
        struct qla_hw_data *ha = vha->hw;
        struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
        int i = 2;
        unsigned long flags;

        if (test_bit(UNLOADING, &base_vha->dpc_flags))
                return;

        while (!list_empty(&vha->work_list) && i > 0) {
                qla2x00_do_work(vha);
                i--;
        }

        spin_lock_irqsave(&vha->work_lock, flags);
        clear_bit(IOCB_WORK_ACTIVE, &vha->dpc_flags);
        spin_unlock_irqrestore(&vha->work_lock, flags);
}

/*
 * PCI driver interface
 */
static int
qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
{
        int     ret = -ENODEV;
        struct Scsi_Host *host;
        scsi_qla_host_t *base_vha = NULL;
        struct qla_hw_data *ha;
        char pci_info[30];
        char fw_str[30], wq_name[30];
        struct scsi_host_template *sht;
        int bars, mem_only = 0;
        uint16_t req_length = 0, rsp_length = 0;
        struct req_que *req = NULL;
        struct rsp_que *rsp = NULL;
        int i;

        bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO);
        sht = &qla2xxx_driver_template;
        if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP8432 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5422 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5432 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2532 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP8001 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP8021 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2031 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP8031 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISPF001 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP8044 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2071 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2271 ||
            pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2261) {
                bars = pci_select_bars(pdev, IORESOURCE_MEM);
                mem_only = 1;
                ql_dbg_pci(ql_dbg_init, pdev, 0x0007,
                    "Mem only adapter.\n");
        }
        ql_dbg_pci(ql_dbg_init, pdev, 0x0008,
            "Bars=%d.\n", bars);

        if (mem_only) {
                if (pci_enable_device_mem(pdev))
                        return ret;
        } else {
                if (pci_enable_device(pdev))
                        return ret;
        }

        /* This may fail but that's ok */
        pci_enable_pcie_error_reporting(pdev);

        ha = kzalloc(sizeof(struct qla_hw_data), GFP_KERNEL);
        if (!ha) {
                ql_log_pci(ql_log_fatal, pdev, 0x0009,
                    "Unable to allocate memory for ha.\n");
                goto disable_device;
        }
        ql_dbg_pci(ql_dbg_init, pdev, 0x000a,
            "Memory allocated for ha=%p.\n", ha);
        ha->pdev = pdev;
        INIT_LIST_HEAD(&ha->tgt.q_full_list);
        spin_lock_init(&ha->tgt.q_full_lock);
        spin_lock_init(&ha->tgt.sess_lock);
        spin_lock_init(&ha->tgt.atio_lock);

        atomic_set(&ha->nvme_active_aen_cnt, 0);

        /* Clear our data area */
        ha->bars = bars;
        ha->mem_only = mem_only;
        spin_lock_init(&ha->hardware_lock);
        spin_lock_init(&ha->vport_slock);
        mutex_init(&ha->selflogin_lock);
        mutex_init(&ha->optrom_mutex);

        /* Set ISP-type information. */
        qla2x00_set_isp_flags(ha);

        /* Set EEH reset type to fundamental if required by hba */
        if (IS_QLA24XX(ha) || IS_QLA25XX(ha) || IS_QLA81XX(ha) ||
            IS_QLA83XX(ha) || IS_QLA27XX(ha))
                pdev->needs_freset = 1;

        ha->prev_topology = 0;
        ha->init_cb_size = sizeof(init_cb_t);
        ha->link_data_rate = PORT_SPEED_UNKNOWN;
        ha->optrom_size = OPTROM_SIZE_2300;
        ha->max_exchg = FW_MAX_EXCHANGES_CNT;
        atomic_set(&ha->num_pend_mbx_stage1, 0);
        atomic_set(&ha->num_pend_mbx_stage2, 0);
        atomic_set(&ha->num_pend_mbx_stage3, 0);
        atomic_set(&ha->zio_threshold, DEFAULT_ZIO_THRESHOLD);
        ha->last_zio_threshold = DEFAULT_ZIO_THRESHOLD;

        /* Assign ISP specific operations. */
        if (IS_QLA2100(ha)) {
                ha->max_fibre_devices = MAX_FIBRE_DEVICES_2100;
                ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
                req_length = REQUEST_ENTRY_CNT_2100;
                rsp_length = RESPONSE_ENTRY_CNT_2100;
                ha->max_loop_id = SNS_LAST_LOOP_ID_2100;
                ha->gid_list_info_size = 4;
                ha->flash_conf_off = ~0;
                ha->flash_data_off = ~0;
                ha->nvram_conf_off = ~0;
                ha->nvram_data_off = ~0;
                ha->isp_ops = &qla2100_isp_ops;
        } else if (IS_QLA2200(ha)) {
                ha->max_fibre_devices = MAX_FIBRE_DEVICES_2100;
                ha->mbx_count = MAILBOX_REGISTER_COUNT_2200;
                req_length = REQUEST_ENTRY_CNT_2200;
                rsp_length = RESPONSE_ENTRY_CNT_2100;
                ha->max_loop_id = SNS_LAST_LOOP_ID_2100;
                ha->gid_list_info_size = 4;
                ha->flash_conf_off = ~0;
                ha->flash_data_off = ~0;
                ha->nvram_conf_off = ~0;
                ha->nvram_data_off = ~0;
                ha->isp_ops = &qla2100_isp_ops;
        } else if (IS_QLA23XX(ha)) {
                ha->max_fibre_devices = MAX_FIBRE_DEVICES_2100;
                ha->mbx_count = MAILBOX_REGISTER_COUNT;
                req_length = REQUEST_ENTRY_CNT_2200;
                rsp_length = RESPONSE_ENTRY_CNT_2300;
                ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
                ha->gid_list_info_size = 6;
                if (IS_QLA2322(ha) || IS_QLA6322(ha))
                        ha->optrom_size = OPTROM_SIZE_2322;
                ha->flash_conf_off = ~0;
                ha->flash_data_off = ~0;
                ha->nvram_conf_off = ~0;
                ha->nvram_data_off = ~0;
                ha->isp_ops = &qla2300_isp_ops;
        } else if (IS_QLA24XX_TYPE(ha)) {
                ha->max_fibre_devices = MAX_FIBRE_DEVICES_2400;
                ha->mbx_count = MAILBOX_REGISTER_COUNT;
                req_length = REQUEST_ENTRY_CNT_24XX;
                rsp_length = RESPONSE_ENTRY_CNT_2300;
                ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
                ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
                ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
                ha->gid_list_info_size = 8;
                ha->optrom_size = OPTROM_SIZE_24XX;
                ha->nvram_npiv_size = QLA_MAX_VPORTS_QLA24XX;
                ha->isp_ops = &qla24xx_isp_ops;
                ha->flash_conf_off = FARX_ACCESS_FLASH_CONF;
                ha->flash_data_off = FARX_ACCESS_FLASH_DATA;
                ha->nvram_conf_off = FARX_ACCESS_NVRAM_CONF;
                ha->nvram_data_off = FARX_ACCESS_NVRAM_DATA;
        } else if (IS_QLA25XX(ha)) {
                ha->max_fibre_devices = MAX_FIBRE_DEVICES_2400;
                ha->mbx_count = MAILBOX_REGISTER_COUNT;
                req_length = REQUEST_ENTRY_CNT_24XX;
                rsp_length = RESPONSE_ENTRY_CNT_2300;
                ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
                ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
                ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
                ha->gid_list_info_size = 8;
                ha->optrom_size = OPTROM_SIZE_25XX;
                ha->nvram_npiv_size = QLA_MAX_VPORTS_QLA25XX;
                ha->isp_ops = &qla25xx_isp_ops;
                ha->flash_conf_off = FARX_ACCESS_FLASH_CONF;
                ha->flash_data_off = FARX_ACCESS_FLASH_DATA;
                ha->nvram_conf_off = FARX_ACCESS_NVRAM_CONF;
                ha->nvram_data_off = FARX_ACCESS_NVRAM_DATA;
        } else if (IS_QLA81XX(ha)) {
                ha->max_fibre_devices = MAX_FIBRE_DEVICES_2400;
                ha->mbx_count = MAILBOX_REGISTER_COUNT;
                req_length = REQUEST_ENTRY_CNT_24XX;
                rsp_length = RESPONSE_ENTRY_CNT_2300;
                ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
                ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
                ha->init_cb_size = sizeof(struct mid_init_cb_81xx);
                ha->gid_list_info_size = 8;
                ha->optrom_size = OPTROM_SIZE_81XX;
                ha->nvram_npiv_size = QLA_MAX_VPORTS_QLA25XX;
                ha->isp_ops = &qla81xx_isp_ops;
                ha->flash_conf_off = FARX_ACCESS_FLASH_CONF_81XX;
                ha->flash_data_off = FARX_ACCESS_FLASH_DATA_81XX;
                ha->nvram_conf_off = ~0;
                ha->nvram_data_off = ~0;
        } else if (IS_QLA82XX(ha)) {
                ha->max_fibre_devices = MAX_FIBRE_DEVICES_2400;
                ha->mbx_count = MAILBOX_REGISTER_COUNT;
                req_length = REQUEST_ENTRY_CNT_82XX;
                rsp_length = RESPONSE_ENTRY_CNT_82XX;
                ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
                ha->init_cb_size = sizeof(struct mid_init_cb_81xx);
                ha->gid_list_info_size = 8;
                ha->optrom_size = OPTROM_SIZE_82XX;
                ha->nvram_npiv_size = QLA_MAX_VPORTS_QLA25XX;
                ha->isp_ops = &qla82xx_isp_ops;
                ha->flash_conf_off = FARX_ACCESS_FLASH_CONF;
                ha->flash_data_off = FARX_ACCESS_FLASH_DATA;
                ha->nvram_conf_off = FARX_ACCESS_NVRAM_CONF;
                ha->nvram_data_off = FARX_ACCESS_NVRAM_DATA;
        } else if (IS_QLA8044(ha)) {
                ha->max_fibre_devices = MAX_FIBRE_DEVICES_2400;
                ha->mbx_count = MAILBOX_REGISTER_COUNT;
                req_length = REQUEST_ENTRY_CNT_82XX;
                rsp_length = RESPONSE_ENTRY_CNT_82XX;
                ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
                ha->init_cb_size = sizeof(struct mid_init_cb_81xx);
                ha->gid_list_info_size = 8;
                ha->optrom_size = OPTROM_SIZE_83XX;
                ha->nvram_npiv_size = QLA_MAX_VPORTS_QLA25XX;
                ha->isp_ops = &qla8044_isp_ops;
                ha->flash_conf_off = FARX_ACCESS_FLASH_CONF;
                ha->flash_data_off = FARX_ACCESS_FLASH_DATA;
                ha->nvram_conf_off = FARX_ACCESS_NVRAM_CONF;
                ha->nvram_data_off = FARX_ACCESS_NVRAM_DATA;
        } else if (IS_QLA83XX(ha)) {
                ha->portnum = PCI_FUNC(ha->pdev->devfn);
                ha->max_fibre_devices = MAX_FIBRE_DEVICES_2400;
                ha->mbx_count = MAILBOX_REGISTER_COUNT;
                req_length = REQUEST_ENTRY_CNT_83XX;
                rsp_length = RESPONSE_ENTRY_CNT_83XX;
                ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
                ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
                ha->init_cb_size = sizeof(struct mid_init_cb_81xx);
                ha->gid_list_info_size = 8;
                ha->optrom_size = OPTROM_SIZE_83XX;
                ha->nvram_npiv_size = QLA_MAX_VPORTS_QLA25XX;
                ha->isp_ops = &qla83xx_isp_ops;
                ha->flash_conf_off = FARX_ACCESS_FLASH_CONF_81XX;
                ha->flash_data_off = FARX_ACCESS_FLASH_DATA_81XX;
                ha->nvram_conf_off = ~0;
                ha->nvram_data_off = ~0;
        }  else if (IS_QLAFX00(ha)) {
                ha->max_fibre_devices = MAX_FIBRE_DEVICES_FX00;
                ha->mbx_count = MAILBOX_REGISTER_COUNT_FX00;
                ha->aen_mbx_count = AEN_MAILBOX_REGISTER_COUNT_FX00;
                req_length = REQUEST_ENTRY_CNT_FX00;
                rsp_length = RESPONSE_ENTRY_CNT_FX00;
                ha->isp_ops = &qlafx00_isp_ops;
                ha->port_down_retry_count = 30; /* default value */
                ha->mr.fw_hbt_cnt = QLAFX00_HEARTBEAT_INTERVAL;
                ha->mr.fw_reset_timer_tick = QLAFX00_RESET_INTERVAL;
                ha->mr.fw_critemp_timer_tick = QLAFX00_CRITEMP_INTERVAL;
                ha->mr.fw_hbt_en = 1;
                ha->mr.host_info_resend = false;
                ha->mr.hinfo_resend_timer_tick = QLAFX00_HINFO_RESEND_INTERVAL;
        } else if (IS_QLA27XX(ha)) {
                ha->portnum = PCI_FUNC(ha->pdev->devfn);
                ha->max_fibre_devices = MAX_FIBRE_DEVICES_2400;
                ha->mbx_count = MAILBOX_REGISTER_COUNT;
                req_length = REQUEST_ENTRY_CNT_83XX;
                rsp_length = RESPONSE_ENTRY_CNT_83XX;
                ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX;
                ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
                ha->init_cb_size = sizeof(struct mid_init_cb_81xx);
                ha->gid_list_info_size = 8;
                ha->optrom_size = OPTROM_SIZE_83XX;
                ha->nvram_npiv_size = QLA_MAX_VPORTS_QLA25XX;
                ha->isp_ops = &qla27xx_isp_ops;
                ha->flash_conf_off = FARX_ACCESS_FLASH_CONF_81XX;
                ha->flash_data_off = FARX_ACCESS_FLASH_DATA_81XX;
                ha->nvram_conf_off = ~0;
                ha->nvram_data_off = ~0;
        }

        ql_dbg_pci(ql_dbg_init, pdev, 0x001e,
            "mbx_count=%d, req_length=%d, "
            "rsp_length=%d, max_loop_id=%d, init_cb_size=%d, "
            "gid_list_info_size=%d, optrom_size=%d, nvram_npiv_size=%d, "
            "max_fibre_devices=%d.\n",
            ha->mbx_count, req_length, rsp_length, ha->max_loop_id,
            ha->init_cb_size, ha->gid_list_info_size, ha->optrom_size,
            ha->nvram_npiv_size, ha->max_fibre_devices);
        ql_dbg_pci(ql_dbg_init, pdev, 0x001f,
            "isp_ops=%p, flash_conf_off=%d, "
            "flash_data_off=%d, nvram_conf_off=%d, nvram_data_off=%d.\n",
            ha->isp_ops, ha->flash_conf_off, ha->flash_data_off,
            ha->nvram_conf_off, ha->nvram_data_off);

        /* Configure PCI I/O space */
        ret = ha->isp_ops->iospace_config(ha);
        if (ret)
                goto iospace_config_failed;

        ql_log_pci(ql_log_info, pdev, 0x001d,
            "Found an ISP%04X irq %d iobase 0x%p.\n",
            pdev->device, pdev->irq, ha->iobase);
        mutex_init(&ha->vport_lock);
        mutex_init(&ha->mq_lock);
        init_completion(&ha->mbx_cmd_comp);
        complete(&ha->mbx_cmd_comp);
        init_completion(&ha->mbx_intr_comp);
        init_completion(&ha->dcbx_comp);
        init_completion(&ha->lb_portup_comp);

        set_bit(0, (unsigned long *) ha->vp_idx_map);

        qla2x00_config_dma_addressing(ha);
        ql_dbg_pci(ql_dbg_init, pdev, 0x0020,
            "64 Bit addressing is %s.\n",
            ha->flags.enable_64bit_addressing ? "enable" :
            "disable");
        ret = qla2x00_mem_alloc(ha, req_length, rsp_length, &req, &rsp);
        if (ret) {
                ql_log_pci(ql_log_fatal, pdev, 0x0031,
                    "Failed to allocate memory for adapter, aborting.\n");

                goto probe_hw_failed;
        }

        req->max_q_depth = MAX_Q_DEPTH;
        if (ql2xmaxqdepth != 0 && ql2xmaxqdepth <= 0xffffU)
                req->max_q_depth = ql2xmaxqdepth;


        base_vha = qla2x00_create_host(sht, ha);
        if (!base_vha) {
                ret = -ENOMEM;
                goto probe_hw_failed;
        }

        pci_set_drvdata(pdev, base_vha);
        set_bit(PFLG_DRIVER_PROBING, &base_vha->pci_flags);

        host = base_vha->host;
        base_vha->req = req;
        if (IS_QLA2XXX_MIDTYPE(ha))
                base_vha->mgmt_svr_loop_id =
                        qla2x00_reserve_mgmt_server_loop_id(base_vha);
        else
                base_vha->mgmt_svr_loop_id = MANAGEMENT_SERVER +
                                                base_vha->vp_idx;

        /* Setup fcport template structure. */
        ha->mr.fcport.vha = base_vha;
        ha->mr.fcport.port_type = FCT_UNKNOWN;
        ha->mr.fcport.loop_id = FC_NO_LOOP_ID;
        qla2x00_set_fcport_state(&ha->mr.fcport, FCS_UNCONFIGURED);
        ha->mr.fcport.supported_classes = FC_COS_UNSPECIFIED;
        ha->mr.fcport.scan_state = 1;

        /* Set the SG table size based on ISP type */
        if (!IS_FWI2_CAPABLE(ha)) {
                if (IS_QLA2100(ha))
                        host->sg_tablesize = 32;
        } else {
                if (!IS_QLA82XX(ha))
                        host->sg_tablesize = QLA_SG_ALL;
        }
        host->max_id = ha->max_fibre_devices;
        host->cmd_per_lun = 3;
        host->unique_id = host->host_no;
        if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif)
                host->max_cmd_len = 32;
        else
                host->max_cmd_len = MAX_CMDSZ;
        host->max_channel = MAX_BUSES - 1;
        /* Older HBAs support only 16-bit LUNs */
        if (!IS_QLAFX00(ha) && !IS_FWI2_CAPABLE(ha) &&
            ql2xmaxlun > 0xffff)
                host->max_lun = 0xffff;
        else
                host->max_lun = ql2xmaxlun;
        host->transportt = qla2xxx_transport_template;
        sht->vendor_id = (SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC);

        ql_dbg(ql_dbg_init, base_vha, 0x0033,
            "max_id=%d this_id=%d "
            "cmd_per_len=%d unique_id=%d max_cmd_len=%d max_channel=%d "
            "max_lun=%llu transportt=%p, vendor_id=%llu.\n", host->max_id,
            host->this_id, host->cmd_per_lun, host->unique_id,
            host->max_cmd_len, host->max_channel, host->max_lun,
            host->transportt, sht->vendor_id);

        INIT_WORK(&base_vha->iocb_work, qla2x00_iocb_work_fn);

        /* Set up the irqs */
        ret = qla2x00_request_irqs(ha, rsp);
        if (ret)
                goto probe_failed;

        /* Alloc arrays of request and response ring ptrs */
        ret = qla2x00_alloc_queues(ha, req, rsp);
        if (ret) {
                ql_log(ql_log_fatal, base_vha, 0x003d,
                    "Failed to allocate memory for queue pointers..."
                    "aborting.\n");
                goto probe_failed;
        }

        if (ha->mqenable && shost_use_blk_mq(host)) {
                /* number of hardware queues supported by blk/scsi-mq*/
                host->nr_hw_queues = ha->max_qpairs;

                ql_dbg(ql_dbg_init, base_vha, 0x0192,
                        "blk/scsi-mq enabled, HW queues = %d.\n", host->nr_hw_queues);
        } else {
                if (ql2xnvmeenable) {
                        host->nr_hw_queues = ha->max_qpairs;
                        ql_dbg(ql_dbg_init, base_vha, 0x0194,
                            "FC-NVMe support is enabled, HW queues=%d\n",
                            host->nr_hw_queues);
                } else {
                        ql_dbg(ql_dbg_init, base_vha, 0x0193,
                            "blk/scsi-mq disabled.\n");
                }
        }

        qlt_probe_one_stage1(base_vha, ha);

        pci_save_state(pdev);

        /* Assign back pointers */
        rsp->req = req;
        req->rsp = rsp;

        if (IS_QLAFX00(ha)) {
                ha->rsp_q_map[0] = rsp;
                ha->req_q_map[0] = req;
                set_bit(0, ha->req_qid_map);
                set_bit(0, ha->rsp_qid_map);
        }

        /* FWI2-capable only. */
        req->req_q_in = &ha->iobase->isp24.req_q_in;
        req->req_q_out = &ha->iobase->isp24.req_q_out;
        rsp->rsp_q_in = &ha->iobase->isp24.rsp_q_in;
        rsp->rsp_q_out = &ha->iobase->isp24.rsp_q_out;
        if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
                req->req_q_in = &ha->mqiobase->isp25mq.req_q_in;
                req->req_q_out = &ha->mqiobase->isp25mq.req_q_out;
                rsp->rsp_q_in = &ha->mqiobase->isp25mq.rsp_q_in;
                rsp->rsp_q_out =  &ha->mqiobase->isp25mq.rsp_q_out;
        }

        if (IS_QLAFX00(ha)) {
                req->req_q_in = &ha->iobase->ispfx00.req_q_in;
                req->req_q_out = &ha->iobase->ispfx00.req_q_out;
                rsp->rsp_q_in = &ha->iobase->ispfx00.rsp_q_in;
                rsp->rsp_q_out = &ha->iobase->ispfx00.rsp_q_out;
        }

        if (IS_P3P_TYPE(ha)) {
                req->req_q_out = &ha->iobase->isp82.req_q_out[0];
                rsp->rsp_q_in = &ha->iobase->isp82.rsp_q_in[0];
                rsp->rsp_q_out = &ha->iobase->isp82.rsp_q_out[0];
        }

        ql_dbg(ql_dbg_multiq, base_vha, 0xc009,
            "rsp_q_map=%p req_q_map=%p rsp->req=%p req->rsp=%p.\n",
            ha->rsp_q_map, ha->req_q_map, rsp->req, req->rsp);
        ql_dbg(ql_dbg_multiq, base_vha, 0xc00a,
            "req->req_q_in=%p req->req_q_out=%p "
            "rsp->rsp_q_in=%p rsp->rsp_q_out=%p.\n",
            req->req_q_in, req->req_q_out,
            rsp->rsp_q_in, rsp->rsp_q_out);
        ql_dbg(ql_dbg_init, base_vha, 0x003e,
            "rsp_q_map=%p req_q_map=%p rsp->req=%p req->rsp=%p.\n",
            ha->rsp_q_map, ha->req_q_map, rsp->req, req->rsp);
        ql_dbg(ql_dbg_init, base_vha, 0x003f,
            "req->req_q_in=%p req->req_q_out=%p rsp->rsp_q_in=%p rsp->rsp_q_out=%p.\n",
            req->req_q_in, req->req_q_out, rsp->rsp_q_in, rsp->rsp_q_out);

        ha->wq = alloc_workqueue("qla2xxx_wq", 0, 0);

        if (ha->isp_ops->initialize_adapter(base_vha)) {
                ql_log(ql_log_fatal, base_vha, 0x00d6,
                    "Failed to initialize adapter - Adapter flags %x.\n",
                    base_vha->device_flags);

                if (IS_QLA82XX(ha)) {
                        qla82xx_idc_lock(ha);
                        qla82xx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
                                QLA8XXX_DEV_FAILED);
                        qla82xx_idc_unlock(ha);
                        ql_log(ql_log_fatal, base_vha, 0x00d7,
                            "HW State: FAILED.\n");
                } else if (IS_QLA8044(ha)) {
                        qla8044_idc_lock(ha);
                        qla8044_wr_direct(base_vha,
                                QLA8044_CRB_DEV_STATE_INDEX,
                                QLA8XXX_DEV_FAILED);
                        qla8044_idc_unlock(ha);
                        ql_log(ql_log_fatal, base_vha, 0x0150,
                            "HW State: FAILED.\n");
                }

                ret = -ENODEV;
                goto probe_failed;
        }

        if (IS_QLAFX00(ha))
                host->can_queue = QLAFX00_MAX_CANQUEUE;
        else
                host->can_queue = req->num_outstanding_cmds - 10;

        ql_dbg(ql_dbg_init, base_vha, 0x0032,
            "can_queue=%d, req=%p, mgmt_svr_loop_id=%d, sg_tablesize=%d.\n",
            host->can_queue, base_vha->req,
            base_vha->mgmt_svr_loop_id, host->sg_tablesize);

        if (ha->mqenable) {
                bool mq = false;
                bool startit = false;

                if (QLA_TGT_MODE_ENABLED()) {
                        mq = true;
                        startit = false;
                }

                if ((ql2x_ini_mode == QLA2XXX_INI_MODE_ENABLED) &&
                    shost_use_blk_mq(host)) {
                        mq = true;
                        startit = true;
                }

                if (mq) {
                        /* Create start of day qpairs for Block MQ */
                        for (i = 0; i < ha->max_qpairs; i++)
                                qla2xxx_create_qpair(base_vha, 5, 0, startit);
                }
        }

        if (ha->flags.running_gold_fw)
                goto skip_dpc;

        /*
         * Startup the kernel thread for this host adapter
         */
        ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
            "%s_dpc", base_vha->host_str);
        if (IS_ERR(ha->dpc_thread)) {
                ql_log(ql_log_fatal, base_vha, 0x00ed,
                    "Failed to start DPC thread.\n");
                ret = PTR_ERR(ha->dpc_thread);
                ha->dpc_thread = NULL;
                goto probe_failed;
        }
        ql_dbg(ql_dbg_init, base_vha, 0x00ee,
            "DPC thread started successfully.\n");

        /*
         * If we're not coming up in initiator mode, we might sit for
         * a while without waking up the dpc thread, which leads to a
         * stuck process warning.  So just kick the dpc once here and
         * let the kthread start (and go back to sleep in qla2x00_do_dpc).
         */
        qla2xxx_wake_dpc(base_vha);

        INIT_WORK(&ha->board_disable, qla2x00_disable_board_on_pci_error);

        if (IS_QLA8031(ha) || IS_MCTP_CAPABLE(ha)) {
                sprintf(wq_name, "qla2xxx_%lu_dpc_lp_wq", base_vha->host_no);
                ha->dpc_lp_wq = create_singlethread_workqueue(wq_name);
                INIT_WORK(&ha->idc_aen, qla83xx_service_idc_aen);

                sprintf(wq_name, "qla2xxx_%lu_dpc_hp_wq", base_vha->host_no);
                ha->dpc_hp_wq = create_singlethread_workqueue(wq_name);
                INIT_WORK(&ha->nic_core_reset, qla83xx_nic_core_reset_work);
                INIT_WORK(&ha->idc_state_handler,
                    qla83xx_idc_state_handler_work);
                INIT_WORK(&ha->nic_core_unrecoverable,
                    qla83xx_nic_core_unrecoverable_work);
        }

skip_dpc:
        list_add_tail(&base_vha->list, &ha->vp_list);
        base_vha->host->irq = ha->pdev->irq;

        /* Initialized the timer */
        qla2x00_start_timer(base_vha, WATCH_INTERVAL);
        ql_dbg(ql_dbg_init, base_vha, 0x00ef,
            "Started qla2x00_timer with "
            "interval=%d.\n", WATCH_INTERVAL);
        ql_dbg(ql_dbg_init, base_vha, 0x00f0,
            "Detected hba at address=%p.\n",
            ha);

        if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif) {
                if (ha->fw_attributes & BIT_4) {
                        int prot = 0, guard;
                        base_vha->flags.difdix_supported = 1;
                        ql_dbg(ql_dbg_init, base_vha, 0x00f1,
                            "Registering for DIF/DIX type 1 and 3 protection.\n");
                        if (ql2xenabledif == 1)
                                prot = SHOST_DIX_TYPE0_PROTECTION;
                        scsi_host_set_prot(host,
                            prot | SHOST_DIF_TYPE1_PROTECTION
                            | SHOST_DIF_TYPE2_PROTECTION
                            | SHOST_DIF_TYPE3_PROTECTION
                            | SHOST_DIX_TYPE1_PROTECTION
                            | SHOST_DIX_TYPE2_PROTECTION
                            | SHOST_DIX_TYPE3_PROTECTION);

                        guard = SHOST_DIX_GUARD_CRC;

                        if (IS_PI_IPGUARD_CAPABLE(ha) &&
                            (ql2xenabledif > 1 || IS_PI_DIFB_DIX0_CAPABLE(ha)))
                                guard |= SHOST_DIX_GUARD_IP;

                        scsi_host_set_guard(host, guard);
                } else
                        base_vha->flags.difdix_supported = 0;
        }

        ha->isp_ops->enable_intrs(ha);

        if (IS_QLAFX00(ha)) {
                ret = qlafx00_fx_disc(base_vha,
                        &base_vha->hw->mr.fcport, FXDISC_GET_CONFIG_INFO);
                host->sg_tablesize = (ha->mr.extended_io_enabled) ?
                    QLA_SG_ALL : 128;
        }

        ret = scsi_add_host(host, &pdev->dev);
        if (ret)
                goto probe_failed;

        base_vha->flags.init_done = 1;
        base_vha->flags.online = 1;
        ha->prev_minidump_failed = 0;

        ql_dbg(ql_dbg_init, base_vha, 0x00f2,
            "Init done and hba is online.\n");

        if (qla_ini_mode_enabled(base_vha) ||
                qla_dual_mode_enabled(base_vha))
                scsi_scan_host(host);
        else
                ql_dbg(ql_dbg_init, base_vha, 0x0122,
                        "skipping scsi_scan_host() for non-initiator port\n");

        qla2x00_alloc_sysfs_attr(base_vha);

        if (IS_QLAFX00(ha)) {
                ret = qlafx00_fx_disc(base_vha,
                        &base_vha->hw->mr.fcport, FXDISC_GET_PORT_INFO);

                /* Register system information */
                ret =  qlafx00_fx_disc(base_vha,
                        &base_vha->hw->mr.fcport, FXDISC_REG_HOST_INFO);
        }

        qla2x00_init_host_attr(base_vha);

        qla2x00_dfs_setup(base_vha);

        ql_log(ql_log_info, base_vha, 0x00fb,
            "QLogic %s - %s.\n", ha->model_number, ha->model_desc);
        ql_log(ql_log_info, base_vha, 0x00fc,
            "ISP%04X: %s @ %s hdma%c host#=%ld fw=%s.\n",
            pdev->device, ha->isp_ops->pci_info_str(base_vha, pci_info),
            pci_name(pdev), ha->flags.enable_64bit_addressing ? '+' : '-',
            base_vha->host_no,
            ha->isp_ops->fw_version_str(base_vha, fw_str, sizeof(fw_str)));

        qlt_add_target(ha, base_vha);

        clear_bit(PFLG_DRIVER_PROBING, &base_vha->pci_flags);

        if (test_bit(UNLOADING, &base_vha->dpc_flags))
                return -ENODEV;

        if (ha->flags.detected_lr_sfp) {
                ql_log(ql_log_info, base_vha, 0xffff,
                    "Reset chip to pick up LR SFP setting\n");
                set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
                qla2xxx_wake_dpc(base_vha);
        }

        return 0;

probe_failed:
        if (base_vha->timer_active)
                qla2x00_stop_timer(base_vha);
        base_vha->flags.online = 0;
        if (ha->dpc_thread) {
                struct task_struct *t = ha->dpc_thread;

                ha->dpc_thread = NULL;
                kthread_stop(t);
        }

        qla2x00_free_device(base_vha);
        scsi_host_put(base_vha->host);
        /*
         * Need to NULL out local req/rsp after
         * qla2x00_free_device => qla2x00_free_queues frees
         * what these are pointing to. Or else we'll
         * fall over below in qla2x00_free_req/rsp_que.
         */
        req = NULL;
        rsp = NULL;

probe_hw_failed:
        qla2x00_mem_free(ha);
        qla2x00_free_req_que(ha, req);
        qla2x00_free_rsp_que(ha, rsp);
        qla2x00_clear_drv_active(ha);

iospace_config_failed:
        if (IS_P3P_TYPE(ha)) {
                if (!ha->nx_pcibase)
                        iounmap((device_reg_t *)ha->nx_pcibase);
                if (!ql2xdbwr)
                        iounmap((device_reg_t *)ha->nxdb_wr_ptr);
        } else {
                if (ha->iobase)
                        iounmap(ha->iobase);
                if (ha->cregbase)
                        iounmap(ha->cregbase);
        }
        pci_release_selected_regions(ha->pdev, ha->bars);
        kfree(ha);

disable_device:
        pci_disable_device(pdev);
        return ret;
}

static void
qla2x00_shutdown(struct pci_dev *pdev)
{
        scsi_qla_host_t *vha;
        struct qla_hw_data  *ha;

        vha = pci_get_drvdata(pdev);
        ha = vha->hw;

        ql_log(ql_log_info, vha, 0xfffa,
                "Adapter shutdown\n");

        /*
         * Prevent future board_disable and wait
         * until any pending board_disable has completed.
         */
        set_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags);
        cancel_work_sync(&ha->board_disable);

        if (!atomic_read(&pdev->enable_cnt))
                return;

        /* Notify ISPFX00 firmware */
        if (IS_QLAFX00(ha))
                qlafx00_driver_shutdown(vha, 20);

        /* Turn-off FCE trace */
        if (ha->flags.fce_enabled) {
                qla2x00_disable_fce_trace(vha, NULL, NULL);
                ha->flags.fce_enabled = 0;
        }

        /* Turn-off EFT trace */
        if (ha->eft)
                qla2x00_disable_eft_trace(vha);

        if (IS_QLA25XX(ha) ||  IS_QLA2031(ha) || IS_QLA27XX(ha)) {
                if (ha->flags.fw_started)
                        qla2x00_abort_isp_cleanup(vha);
        } else {
                /* Stop currently executing firmware. */
                qla2x00_try_to_stop_firmware(vha);
        }

        /* Turn adapter off line */
        vha->flags.online = 0;

        /* turn-off interrupts on the card */
        if (ha->interrupts_on) {
                vha->flags.init_done = 0;
                ha->isp_ops->disable_intrs(ha);
        }

        qla2x00_free_irqs(vha);

        qla2x00_free_fw_dump(ha);

        pci_disable_device(pdev);
        ql_log(ql_log_info, vha, 0xfffe,
                "Adapter shutdown successfully.\n");
}

/* Deletes all the virtual ports for a given ha */
static void
qla2x00_delete_all_vps(struct qla_hw_data *ha, scsi_qla_host_t *base_vha)
{
        scsi_qla_host_t *vha;
        unsigned long flags;

        mutex_lock(&ha->vport_lock);
        while (ha->cur_vport_count) {
                spin_lock_irqsave(&ha->vport_slock, flags);

                BUG_ON(base_vha->list.next == &ha->vp_list);
                /* This assumes first entry in ha->vp_list is always base vha */
                vha = list_first_entry(&base_vha->list, scsi_qla_host_t, list);
                scsi_host_get(vha->host);

                spin_unlock_irqrestore(&ha->vport_slock, flags);
                mutex_unlock(&ha->vport_lock);

                fc_vport_terminate(vha->fc_vport);
                scsi_host_put(vha->host);

                mutex_lock(&ha->vport_lock);
        }
        mutex_unlock(&ha->vport_lock);
}

/* Stops all deferred work threads */
static void
qla2x00_destroy_deferred_work(struct qla_hw_data *ha)
{
        /* Cancel all work and destroy DPC workqueues */
        if (ha->dpc_lp_wq) {
                cancel_work_sync(&ha->idc_aen);
                destroy_workqueue(ha->dpc_lp_wq);
                ha->dpc_lp_wq = NULL;
        }

        if (ha->dpc_hp_wq) {
                cancel_work_sync(&ha->nic_core_reset);
                cancel_work_sync(&ha->idc_state_handler);
                cancel_work_sync(&ha->nic_core_unrecoverable);
                destroy_workqueue(ha->dpc_hp_wq);
                ha->dpc_hp_wq = NULL;
        }

        /* Kill the kernel thread for this host */
        if (ha->dpc_thread) {
                struct task_struct *t = ha->dpc_thread;

                /*
                 * qla2xxx_wake_dpc checks for ->dpc_thread
                 * so we need to zero it out.
                 */
                ha->dpc_thread = NULL;
                kthread_stop(t);
        }
}

static void
qla2x00_unmap_iobases(struct qla_hw_data *ha)
{
        if (IS_QLA82XX(ha)) {

                iounmap((device_reg_t *)ha->nx_pcibase);
                if (!ql2xdbwr)
                        iounmap((device_reg_t *)ha->nxdb_wr_ptr);
        } else {
                if (ha->iobase)
                        iounmap(ha->iobase);

                if (ha->cregbase)
                        iounmap(ha->cregbase);

                if (ha->mqiobase)
                        iounmap(ha->mqiobase);

                if ((IS_QLA83XX(ha) || IS_QLA27XX(ha)) && ha->msixbase)
                        iounmap(ha->msixbase);
        }
}

static void
qla2x00_clear_drv_active(struct qla_hw_data *ha)
{
        if (IS_QLA8044(ha)) {
                qla8044_idc_lock(ha);
                qla8044_clear_drv_active(ha);
                qla8044_idc_unlock(ha);
        } else if (IS_QLA82XX(ha)) {
                qla82xx_idc_lock(ha);
                qla82xx_clear_drv_active(ha);
                qla82xx_idc_unlock(ha);
        }
}

static void
qla2x00_remove_one(struct pci_dev *pdev)
{
        scsi_qla_host_t *base_vha;
        struct qla_hw_data  *ha;

        base_vha = pci_get_drvdata(pdev);
        ha = base_vha->hw;
        ql_log(ql_log_info, base_vha, 0xb079,
            "Removing driver\n");

        /* Indicate device removal to prevent future board_disable and wait
         * until any pending board_disable has completed. */
        set_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags);
        cancel_work_sync(&ha->board_disable);

        /*
         * If the PCI device is disabled then there was a PCI-disconnect and
         * qla2x00_disable_board_on_pci_error has taken care of most of the
         * resources.
         */
        if (!atomic_read(&pdev->enable_cnt)) {
                dma_free_coherent(&ha->pdev->dev, base_vha->gnl.size,
                    base_vha->gnl.l, base_vha->gnl.ldma);

                scsi_host_put(base_vha->host);
                kfree(ha);
                pci_set_drvdata(pdev, NULL);
                return;
        }
        qla2x00_wait_for_hba_ready(base_vha);

        if (IS_QLA25XX(ha) || IS_QLA2031(ha) || IS_QLA27XX(ha)) {
                if (ha->flags.fw_started)
                        qla2x00_abort_isp_cleanup(base_vha);
        } else if (!IS_QLAFX00(ha)) {
                if (IS_QLA8031(ha)) {
                        ql_dbg(ql_dbg_p3p, base_vha, 0xb07e,
                            "Clearing fcoe driver presence.\n");
                        if (qla83xx_clear_drv_presence(base_vha) != QLA_SUCCESS)
                                ql_dbg(ql_dbg_p3p, base_vha, 0xb079,
                                    "Error while clearing DRV-Presence.\n");
                }

                qla2x00_try_to_stop_firmware(base_vha);
        }

        qla2x00_wait_for_sess_deletion(base_vha);

        /*
         * if UNLOAD flag is already set, then continue unload,
         * where it was set first.
         */
        if (test_bit(UNLOADING, &base_vha->dpc_flags))
                return;

        set_bit(UNLOADING, &base_vha->dpc_flags);

        qla_nvme_delete(base_vha);

        dma_free_coherent(&ha->pdev->dev,
                base_vha->gnl.size, base_vha->gnl.l, base_vha->gnl.ldma);

        vfree(base_vha->scan.l);

        if (IS_QLAFX00(ha))
                qlafx00_driver_shutdown(base_vha, 20);

        qla2x00_delete_all_vps(ha, base_vha);

        qla2x00_abort_all_cmds(base_vha, DID_NO_CONNECT << 16);

        qla2x00_dfs_remove(base_vha);

        qla84xx_put_chip(base_vha);

        /* Disable timer */
        if (base_vha->timer_active)
                qla2x00_stop_timer(base_vha);

        base_vha->flags.online = 0;

        /* free DMA memory */
        if (ha->exlogin_buf)
                qla2x00_free_exlogin_buffer(ha);

        /* free DMA memory */
        if (ha->exchoffld_buf)
                qla2x00_free_exchoffld_buffer(ha);

        qla2x00_destroy_deferred_work(ha);

        qlt_remove_target(ha, base_vha);

        qla2x00_free_sysfs_attr(base_vha, true);

        fc_remove_host(base_vha->host);
        qlt_remove_target_resources(ha);

        scsi_remove_host(base_vha->host);

        qla2x00_free_device(base_vha);

        qla2x00_clear_drv_active(ha);

        scsi_host_put(base_vha->host);

        qla2x00_unmap_iobases(ha);

        pci_release_selected_regions(ha->pdev, ha->bars);
        kfree(ha);

        pci_disable_pcie_error_reporting(pdev);

        pci_disable_device(pdev);
}

static void
qla2x00_free_device(scsi_qla_host_t *vha)
{
        struct qla_hw_data *ha = vha->hw;

        qla2x00_abort_all_cmds(vha, DID_NO_CONNECT << 16);

        /* Disable timer */
        if (vha->timer_active)
                qla2x00_stop_timer(vha);

        qla25xx_delete_queues(vha);
        vha->flags.online = 0;

        /* turn-off interrupts on the card */
        if (ha->interrupts_on) {
                vha->flags.init_done = 0;
                ha->isp_ops->disable_intrs(ha);
        }

        qla2x00_free_fcports(vha);

        qla2x00_free_irqs(vha);

        /* Flush the work queue and remove it */
        if (ha->wq) {
                flush_workqueue(ha->wq);
                destroy_workqueue(ha->wq);
                ha->wq = NULL;
        }


        qla2x00_mem_free(ha);

        qla82xx_md_free(vha);

        qla2x00_free_queues(ha);
}

void qla2x00_free_fcports(struct scsi_qla_host *vha)
{
        fc_port_t *fcport, *tfcport;

        list_for_each_entry_safe(fcport, tfcport, &vha->vp_fcports, list) {
                list_del(&fcport->list);
                qla2x00_clear_loop_id(fcport);
                kfree(fcport);
        }
}

static inline void
qla2x00_schedule_rport_del(struct scsi_qla_host *vha, fc_port_t *fcport,
    int defer)
{
        struct fc_rport *rport;
        scsi_qla_host_t *base_vha;
        unsigned long flags;

        if (!fcport->rport)
                return;

        rport = fcport->rport;
        if (defer) {
                base_vha = pci_get_drvdata(vha->hw->pdev);
                spin_lock_irqsave(vha->host->host_lock, flags);
                fcport->drport = rport;
                spin_unlock_irqrestore(vha->host->host_lock, flags);
                qlt_do_generation_tick(vha, &base_vha->total_fcport_update_gen);
                set_bit(FCPORT_UPDATE_NEEDED, &base_vha->dpc_flags);
                qla2xxx_wake_dpc(base_vha);
        } else {
                int now;
                if (rport) {
                        ql_dbg(ql_dbg_disc, fcport->vha, 0x2109,
                            "%s %8phN. rport %p roles %x\n",
                            __func__, fcport->port_name, rport,
                            rport->roles);
                        fc_remote_port_delete(rport);
                }
                qlt_do_generation_tick(vha, &now);
        }
}

/*
 * qla2x00_mark_device_lost Updates fcport state when device goes offline.
 *
 * Input: ha = adapter block pointer.  fcport = port structure pointer.
 *
 * Return: None.
 *
 * Context:
 */
void qla2x00_mark_device_lost(scsi_qla_host_t *vha, fc_port_t *fcport,
    int do_login, int defer)
{
        if (IS_QLAFX00(vha->hw)) {
                qla2x00_set_fcport_state(fcport, FCS_DEVICE_LOST);
                qla2x00_schedule_rport_del(vha, fcport, defer);
                return;
        }

        if (atomic_read(&fcport->state) == FCS_ONLINE &&
            vha->vp_idx == fcport->vha->vp_idx) {
                qla2x00_set_fcport_state(fcport, FCS_DEVICE_LOST);
                qla2x00_schedule_rport_del(vha, fcport, defer);
        }
        /*
         * We may need to retry the login, so don't change the state of the
         * port but do the retries.
         */
        if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
                qla2x00_set_fcport_state(fcport, FCS_DEVICE_LOST);

        if (!do_login)
                return;

        set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
}

/*
 * qla2x00_mark_all_devices_lost
 *      Updates fcport state when device goes offline.
 *
 * Input:
 *      ha = adapter block pointer.
 *      fcport = port structure pointer.
 *
 * Return:
 *      None.
 *
 * Context:
 */
void
qla2x00_mark_all_devices_lost(scsi_qla_host_t *vha, int defer)
{
        fc_port_t *fcport;

        ql_dbg(ql_dbg_disc, vha, 0x20f1,
            "Mark all dev lost\n");

        list_for_each_entry(fcport, &vha->vp_fcports, list) {
                fcport->scan_state = 0;
                qlt_schedule_sess_for_deletion(fcport);

                if (vha->vp_idx != 0 && vha->vp_idx != fcport->vha->vp_idx)
                        continue;

                /*
                 * No point in marking the device as lost, if the device is
                 * already DEAD.
                 */
                if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
                        continue;
                if (atomic_read(&fcport->state) == FCS_ONLINE) {
                        qla2x00_set_fcport_state(fcport, FCS_DEVICE_LOST);
                        if (defer)
                                qla2x00_schedule_rport_del(vha, fcport, defer);
                        else if (vha->vp_idx == fcport->vha->vp_idx)
                                qla2x00_schedule_rport_del(vha, fcport, defer);
                }
        }
}

/*
* qla2x00_mem_alloc
*      Allocates adapter memory.
*
* Returns:
*      0  = success.
*      !0  = failure.
*/
static int
qla2x00_mem_alloc(struct qla_hw_data *ha, uint16_t req_len, uint16_t rsp_len,
        struct req_que **req, struct rsp_que **rsp)
{
        char    name[16];

        ha->init_cb = dma_alloc_coherent(&ha->pdev->dev, ha->init_cb_size,
                &ha->init_cb_dma, GFP_KERNEL);
        if (!ha->init_cb)
                goto fail;

        if (qlt_mem_alloc(ha) < 0)
                goto fail_free_init_cb;

        ha->gid_list = dma_alloc_coherent(&ha->pdev->dev,
                qla2x00_gid_list_size(ha), &ha->gid_list_dma, GFP_KERNEL);
        if (!ha->gid_list)
                goto fail_free_tgt_mem;

        ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
        if (!ha->srb_mempool)
                goto fail_free_gid_list;

        if (IS_P3P_TYPE(ha)) {
                /* Allocate cache for CT6 Ctx. */
                if (!ctx_cachep) {
                        ctx_cachep = kmem_cache_create("qla2xxx_ctx",
                                sizeof(struct ct6_dsd), 0,
                                SLAB_HWCACHE_ALIGN, NULL);
                        if (!ctx_cachep)
                                goto fail_free_srb_mempool;
                }
                ha->ctx_mempool = mempool_create_slab_pool(SRB_MIN_REQ,
                        ctx_cachep);
                if (!ha->ctx_mempool)
                        goto fail_free_srb_mempool;
                ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0021,
                    "ctx_cachep=%p ctx_mempool=%p.\n",
                    ctx_cachep, ha->ctx_mempool);
        }

        /* Get memory for cached NVRAM */
        ha->nvram = kzalloc(MAX_NVRAM_SIZE, GFP_KERNEL);
        if (!ha->nvram)
                goto fail_free_ctx_mempool;

        snprintf(name, sizeof(name), "%s_%d", QLA2XXX_DRIVER_NAME,
                ha->pdev->device);
        ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
                DMA_POOL_SIZE, 8, 0);
        if (!ha->s_dma_pool)
                goto fail_free_nvram;

        ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0022,
            "init_cb=%p gid_list=%p, srb_mempool=%p s_dma_pool=%p.\n",
            ha->init_cb, ha->gid_list, ha->srb_mempool, ha->s_dma_pool);

        if (IS_P3P_TYPE(ha) || ql2xenabledif) {
                ha->dl_dma_pool = dma_pool_create(name, &ha->pdev->dev,
                        DSD_LIST_DMA_POOL_SIZE, 8, 0);
                if (!ha->dl_dma_pool) {
                        ql_log_pci(ql_log_fatal, ha->pdev, 0x0023,
                            "Failed to allocate memory for dl_dma_pool.\n");
                        goto fail_s_dma_pool;
                }

                ha->fcp_cmnd_dma_pool = dma_pool_create(name, &ha->pdev->dev,
                        FCP_CMND_DMA_POOL_SIZE, 8, 0);
                if (!ha->fcp_cmnd_dma_pool) {
                        ql_log_pci(ql_log_fatal, ha->pdev, 0x0024,
                            "Failed to allocate memory for fcp_cmnd_dma_pool.\n");
                        goto fail_dl_dma_pool;
                }
                ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0025,
                    "dl_dma_pool=%p fcp_cmnd_dma_pool=%p.\n",
                    ha->dl_dma_pool, ha->fcp_cmnd_dma_pool);
        }

        /* Allocate memory for SNS commands */
        if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
        /* Get consistent memory allocated for SNS commands */
                ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
                sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma, GFP_KERNEL);
                if (!ha->sns_cmd)
                        goto fail_dma_pool;
                ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0026,
                    "sns_cmd: %p.\n", ha->sns_cmd);
        } else {
        /* Get consistent memory allocated for MS IOCB */
                ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
                        &ha->ms_iocb_dma);
                if (!ha->ms_iocb)
                        goto fail_dma_pool;
        /* Get consistent memory allocated for CT SNS commands */
                ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
                        sizeof(struct ct_sns_pkt), &ha->ct_sns_dma, GFP_KERNEL);
                if (!ha->ct_sns)
                        goto fail_free_ms_iocb;
                ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0027,
                    "ms_iocb=%p ct_sns=%p.\n",
                    ha->ms_iocb, ha->ct_sns);
        }

        /* Allocate memory for request ring */
        *req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
        if (!*req) {
                ql_log_pci(ql_log_fatal, ha->pdev, 0x0028,
                    "Failed to allocate memory for req.\n");
                goto fail_req;
        }
        (*req)->length = req_len;
        (*req)->ring = dma_alloc_coherent(&ha->pdev->dev,
                ((*req)->length + 1) * sizeof(request_t),
                &(*req)->dma, GFP_KERNEL);
        if (!(*req)->ring) {
                ql_log_pci(ql_log_fatal, ha->pdev, 0x0029,
                    "Failed to allocate memory for req_ring.\n");
                goto fail_req_ring;
        }
        /* Allocate memory for response ring */
        *rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
        if (!*rsp) {
                ql_log_pci(ql_log_fatal, ha->pdev, 0x002a,
                    "Failed to allocate memory for rsp.\n");
                goto fail_rsp;
        }
        (*rsp)->hw = ha;
        (*rsp)->length = rsp_len;
        (*rsp)->ring = dma_alloc_coherent(&ha->pdev->dev,
                ((*rsp)->length + 1) * sizeof(response_t),
                &(*rsp)->dma, GFP_KERNEL);
        if (!(*rsp)->ring) {
                ql_log_pci(ql_log_fatal, ha->pdev, 0x002b,
                    "Failed to allocate memory for rsp_ring.\n");
                goto fail_rsp_ring;
        }
        (*req)->rsp = *rsp;
        (*rsp)->req = *req;
        ql_dbg_pci(ql_dbg_init, ha->pdev, 0x002c,
            "req=%p req->length=%d req->ring=%p rsp=%p "
            "rsp->length=%d rsp->ring=%p.\n",
            *req, (*req)->length, (*req)->ring, *rsp, (*rsp)->length,
            (*rsp)->ring);
        /* Allocate memory for NVRAM data for vports */
        if (ha->nvram_npiv_size) {
                ha->npiv_info = kcalloc(ha->nvram_npiv_size,
                                        sizeof(struct qla_npiv_entry),
                                        GFP_KERNEL);
                if (!ha->npiv_info) {
                        ql_log_pci(ql_log_fatal, ha->pdev, 0x002d,
                            "Failed to allocate memory for npiv_info.\n");
                        goto fail_npiv_info;
                }
        } else
                ha->npiv_info = NULL;

        /* Get consistent memory allocated for EX-INIT-CB. */
        if (IS_CNA_CAPABLE(ha) || IS_QLA2031(ha) || IS_QLA27XX(ha)) {
                ha->ex_init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
                    &ha->ex_init_cb_dma);
                if (!ha->ex_init_cb)
                        goto fail_ex_init_cb;
                ql_dbg_pci(ql_dbg_init, ha->pdev, 0x002e,
                    "ex_init_cb=%p.\n", ha->ex_init_cb);
        }

        INIT_LIST_HEAD(&ha->gbl_dsd_list);

        /* Get consistent memory allocated for Async Port-Database. */
        if (!IS_FWI2_CAPABLE(ha)) {
                ha->async_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
                        &ha->async_pd_dma);
                if (!ha->async_pd)
                        goto fail_async_pd;
                ql_dbg_pci(ql_dbg_init, ha->pdev, 0x002f,
                    "async_pd=%p.\n", ha->async_pd);
        }

        INIT_LIST_HEAD(&ha->vp_list);

        /* Allocate memory for our loop_id bitmap */
        ha->loop_id_map = kcalloc(BITS_TO_LONGS(LOOPID_MAP_SIZE),
                                  sizeof(long),
                                  GFP_KERNEL);
        if (!ha->loop_id_map)
                goto fail_loop_id_map;
        else {
                qla2x00_set_reserved_loop_ids(ha);
                ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0123,
                    "loop_id_map=%p.\n", ha->loop_id_map);
        }

        ha->sfp_data = dma_alloc_coherent(&ha->pdev->dev,
            SFP_DEV_SIZE, &ha->sfp_data_dma, GFP_KERNEL);
        if (!ha->sfp_data) {
                ql_dbg_pci(ql_dbg_init, ha->pdev, 0x011b,
                    "Unable to allocate memory for SFP read-data.\n");
                goto fail_sfp_data;
        }

        return 0;

fail_sfp_data:
        kfree(ha->loop_id_map);
fail_loop_id_map:
        dma_pool_free(ha->s_dma_pool, ha->async_pd, ha->async_pd_dma);
fail_async_pd:
        dma_pool_free(ha->s_dma_pool, ha->ex_init_cb, ha->ex_init_cb_dma);
fail_ex_init_cb:
        kfree(ha->npiv_info);
fail_npiv_info:
        dma_free_coherent(&ha->pdev->dev, ((*rsp)->length + 1) *
                sizeof(response_t), (*rsp)->ring, (*rsp)->dma);
        (*rsp)->ring = NULL;
        (*rsp)->dma = 0;
fail_rsp_ring:
        kfree(*rsp);
        *rsp = NULL;
fail_rsp:
        dma_free_coherent(&ha->pdev->dev, ((*req)->length + 1) *
                sizeof(request_t), (*req)->ring, (*req)->dma);
        (*req)->ring = NULL;
        (*req)->dma = 0;
fail_req_ring:
        kfree(*req);
        *req = NULL;
fail_req:
        dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
                ha->ct_sns, ha->ct_sns_dma);
        ha->ct_sns = NULL;
        ha->ct_sns_dma = 0;
fail_free_ms_iocb:
        dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
        ha->ms_iocb = NULL;
        ha->ms_iocb_dma = 0;

        if (ha->sns_cmd)
                dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
                    ha->sns_cmd, ha->sns_cmd_dma);
fail_dma_pool:
        if (IS_QLA82XX(ha) || ql2xenabledif) {
                dma_pool_destroy(ha->fcp_cmnd_dma_pool);
                ha->fcp_cmnd_dma_pool = NULL;
        }
fail_dl_dma_pool:
        if (IS_QLA82XX(ha) || ql2xenabledif) {
                dma_pool_destroy(ha->dl_dma_pool);
                ha->dl_dma_pool = NULL;
        }
fail_s_dma_pool:
        dma_pool_destroy(ha->s_dma_pool);
        ha->s_dma_pool = NULL;
fail_free_nvram:
        kfree(ha->nvram);
        ha->nvram = NULL;
fail_free_ctx_mempool:
        if (ha->ctx_mempool)
                mempool_destroy(ha->ctx_mempool);
        ha->ctx_mempool = NULL;
fail_free_srb_mempool:
        if (ha->srb_mempool)
                mempool_destroy(ha->srb_mempool);
        ha->srb_mempool = NULL;
fail_free_gid_list:
        dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
        ha->gid_list,
        ha->gid_list_dma);
        ha->gid_list = NULL;
        ha->gid_list_dma = 0;
fail_free_tgt_mem:
        qlt_mem_free(ha);
fail_free_init_cb:
        dma_free_coherent(&ha->pdev->dev, ha->init_cb_size, ha->init_cb,
        ha->init_cb_dma);
        ha->init_cb = NULL;
        ha->init_cb_dma = 0;
fail:
        ql_log(ql_log_fatal, NULL, 0x0030,
            "Memory allocation failure.\n");
        return -ENOMEM;
}

int
qla2x00_set_exlogins_buffer(scsi_qla_host_t *vha)
{
        int rval;
        uint16_t        size, max_cnt, temp;
        struct qla_hw_data *ha = vha->hw;

        /* Return if we don't need to alloacate any extended logins */
        if (!ql2xexlogins)
                return QLA_SUCCESS;

        if (!IS_EXLOGIN_OFFLD_CAPABLE(ha))
                return QLA_SUCCESS;

        ql_log(ql_log_info, vha, 0xd021, "EXLOGIN count: %d.\n", ql2xexlogins);
        max_cnt = 0;
        rval = qla_get_exlogin_status(vha, &size, &max_cnt);
        if (rval != QLA_SUCCESS) {
                ql_log_pci(ql_log_fatal, ha->pdev, 0xd029,
                    "Failed to get exlogin status.\n");
                return rval;
        }

        temp = (ql2xexlogins > max_cnt) ? max_cnt : ql2xexlogins;
        temp *= size;

        if (temp != ha->exlogin_size) {
                qla2x00_free_exlogin_buffer(ha);
                ha->exlogin_size = temp;

                ql_log(ql_log_info, vha, 0xd024,
                    "EXLOGIN: max_logins=%d, portdb=0x%x, total=%d.\n",
                    max_cnt, size, temp);

                ql_log(ql_log_info, vha, 0xd025,
                    "EXLOGIN: requested size=0x%x\n", ha->exlogin_size);

                /* Get consistent memory for extended logins */
                ha->exlogin_buf = dma_alloc_coherent(&ha->pdev->dev,
                        ha->exlogin_size, &ha->exlogin_buf_dma, GFP_KERNEL);
                if (!ha->exlogin_buf) {
                        ql_log_pci(ql_log_fatal, ha->pdev, 0xd02a,
                    "Failed to allocate memory for exlogin_buf_dma.\n");
                        return -ENOMEM;
                }
        }

        /* Now configure the dma buffer */
        rval = qla_set_exlogin_mem_cfg(vha, ha->exlogin_buf_dma);
        if (rval) {
                ql_log(ql_log_fatal, vha, 0xd033,
                    "Setup extended login buffer  ****FAILED****.\n");
                qla2x00_free_exlogin_buffer(ha);
        }

        return rval;
}

/*
* qla2x00_free_exlogin_buffer
*
* Input:
*       ha = adapter block pointer
*/
void
qla2x00_free_exlogin_buffer(struct qla_hw_data *ha)
{
        if (ha->exlogin_buf) {
                dma_free_coherent(&ha->pdev->dev, ha->exlogin_size,
                    ha->exlogin_buf, ha->exlogin_buf_dma);
                ha->exlogin_buf = NULL;
                ha->exlogin_size = 0;
        }
}

static void
qla2x00_number_of_exch(scsi_qla_host_t *vha, u32 *ret_cnt, u16 max_cnt)
{
        u32 temp;
        struct init_cb_81xx *icb = (struct init_cb_81xx *)&vha->hw->init_cb;
        *ret_cnt = FW_DEF_EXCHANGES_CNT;

        if (max_cnt > vha->hw->max_exchg)
                max_cnt = vha->hw->max_exchg;

        if (qla_ini_mode_enabled(vha)) {
                if (vha->ql2xiniexchg > max_cnt)
                        vha->ql2xiniexchg = max_cnt;

                if (vha->ql2xiniexchg > FW_DEF_EXCHANGES_CNT)
                        *ret_cnt = vha->ql2xiniexchg;

        } else if (qla_tgt_mode_enabled(vha)) {
                if (vha->ql2xexchoffld > max_cnt) {
                        vha->ql2xexchoffld = max_cnt;
                        icb->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
                }

                if (vha->ql2xexchoffld > FW_DEF_EXCHANGES_CNT)
                        *ret_cnt = vha->ql2xexchoffld;
        } else if (qla_dual_mode_enabled(vha)) {
                temp = vha->ql2xiniexchg + vha->ql2xexchoffld;
                if (temp > max_cnt) {
                        vha->ql2xiniexchg -= (temp - max_cnt)/2;
                        vha->ql2xexchoffld -= (((temp - max_cnt)/2) + 1);
                        temp = max_cnt;
                        icb->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
                }

                if (temp > FW_DEF_EXCHANGES_CNT)
                        *ret_cnt = temp;
        }
}

int
qla2x00_set_exchoffld_buffer(scsi_qla_host_t *vha)
{
        int rval;
        u16     size, max_cnt;
        u32 actual_cnt, totsz;
        struct qla_hw_data *ha = vha->hw;

        if (!ha->flags.exchoffld_enabled)
                return QLA_SUCCESS;

        if (!IS_EXCHG_OFFLD_CAPABLE(ha))
                return QLA_SUCCESS;

        max_cnt = 0;
        rval = qla_get_exchoffld_status(vha, &size, &max_cnt);
        if (rval != QLA_SUCCESS) {
                ql_log_pci(ql_log_fatal, ha->pdev, 0xd012,
                    "Failed to get exlogin status.\n");
                return rval;
        }

        qla2x00_number_of_exch(vha, &actual_cnt, max_cnt);
        ql_log(ql_log_info, vha, 0xd014,
            "Actual exchange offload count: %d.\n", actual_cnt);

        totsz = actual_cnt * size;

        if (totsz != ha->exchoffld_size) {
                qla2x00_free_exchoffld_buffer(ha);
                if (actual_cnt <= FW_DEF_EXCHANGES_CNT) {
                        ha->exchoffld_size = 0;
                        ha->flags.exchoffld_enabled = 0;
                        return QLA_SUCCESS;
                }

                ha->exchoffld_size = totsz;

                ql_log(ql_log_info, vha, 0xd016,
                    "Exchange offload: max_count=%d, actual count=%d entry sz=0x%x, total sz=0x%x\n",
                    max_cnt, actual_cnt, size, totsz);

                ql_log(ql_log_info, vha, 0xd017,
                    "Exchange Buffers requested size = 0x%x\n",
                    ha->exchoffld_size);

                /* Get consistent memory for extended logins */
                ha->exchoffld_buf = dma_alloc_coherent(&ha->pdev->dev,
                        ha->exchoffld_size, &ha->exchoffld_buf_dma, GFP_KERNEL);
                if (!ha->exchoffld_buf) {
                        ql_log_pci(ql_log_fatal, ha->pdev, 0xd013,
                        "Failed to allocate memory for Exchange Offload.\n");

                        if (ha->max_exchg >
                            (FW_DEF_EXCHANGES_CNT + REDUCE_EXCHANGES_CNT)) {
                                ha->max_exchg -= REDUCE_EXCHANGES_CNT;
                        } else if (ha->max_exchg >
                            (FW_DEF_EXCHANGES_CNT + 512)) {
                                ha->max_exchg -= 512;
                        } else {
                                ha->flags.exchoffld_enabled = 0;
                                ql_log_pci(ql_log_fatal, ha->pdev, 0xd013,
                                    "Disabling Exchange offload due to lack of memory\n");
                        }
                        ha->exchoffld_size = 0;

                        return -ENOMEM;
                }
        } else if (!ha->exchoffld_buf || (actual_cnt <= FW_DEF_EXCHANGES_CNT)) {
                /* pathological case */
                qla2x00_free_exchoffld_buffer(ha);
                ha->exchoffld_size = 0;
                ha->flags.exchoffld_enabled = 0;
                ql_log(ql_log_info, vha, 0xd016,
                    "Exchange offload not enable: offld size=%d, actual count=%d entry sz=0x%x, total sz=0x%x.\n",
                    ha->exchoffld_size, actual_cnt, size, totsz);
                return 0;
        }

        /* Now configure the dma buffer */
        rval = qla_set_exchoffld_mem_cfg(vha);
        if (rval) {
                ql_log(ql_log_fatal, vha, 0xd02e,
                    "Setup exchange offload buffer ****FAILED****.\n");
                qla2x00_free_exchoffld_buffer(ha);
        } else {
                /* re-adjust number of target exchange */
                struct init_cb_81xx *icb = (struct init_cb_81xx *)ha->init_cb;

                if (qla_ini_mode_enabled(vha))
                        icb->exchange_count = 0;
                else
                        icb->exchange_count = cpu_to_le16(vha->ql2xexchoffld);
        }

        return rval;
}

/*
* qla2x00_free_exchoffld_buffer
*
* Input:
*       ha = adapter block pointer
*/
void
qla2x00_free_exchoffld_buffer(struct qla_hw_data *ha)
{
        if (ha->exchoffld_buf) {
                dma_free_coherent(&ha->pdev->dev, ha->exchoffld_size,
                    ha->exchoffld_buf, ha->exchoffld_buf_dma);
                ha->exchoffld_buf = NULL;
                ha->exchoffld_size = 0;
        }
}

/*
* qla2x00_free_fw_dump
*       Frees fw dump stuff.
*
* Input:
*       ha = adapter block pointer
*/
static void
qla2x00_free_fw_dump(struct qla_hw_data *ha)
{
        if (ha->fce)
                dma_free_coherent(&ha->pdev->dev,
                    FCE_SIZE, ha->fce, ha->fce_dma);

        if (ha->eft)
                dma_free_coherent(&ha->pdev->dev,
                    EFT_SIZE, ha->eft, ha->eft_dma);

        if (ha->fw_dump)
                vfree(ha->fw_dump);
        if (ha->fw_dump_template)
                vfree(ha->fw_dump_template);

        ha->fce = NULL;
        ha->fce_dma = 0;
        ha->eft = NULL;
        ha->eft_dma = 0;
        ha->fw_dumped = 0;
        ha->fw_dump_cap_flags = 0;
        ha->fw_dump_reading = 0;
        ha->fw_dump = NULL;
        ha->fw_dump_len = 0;
        ha->fw_dump_template = NULL;
        ha->fw_dump_template_len = 0;
}

/*
* qla2x00_mem_free
*      Frees all adapter allocated memory.
*
* Input:
*      ha = adapter block pointer.
*/
static void
qla2x00_mem_free(struct qla_hw_data *ha)
{
        qla2x00_free_fw_dump(ha);

        if (ha->mctp_dump)
                dma_free_coherent(&ha->pdev->dev, MCTP_DUMP_SIZE, ha->mctp_dump,
                    ha->mctp_dump_dma);

        if (ha->srb_mempool)
                mempool_destroy(ha->srb_mempool);

        if (ha->dcbx_tlv)
                dma_free_coherent(&ha->pdev->dev, DCBX_TLV_DATA_SIZE,
                    ha->dcbx_tlv, ha->dcbx_tlv_dma);

        if (ha->xgmac_data)
                dma_free_coherent(&ha->pdev->dev, XGMAC_DATA_SIZE,
                    ha->xgmac_data, ha->xgmac_data_dma);

        if (ha->sns_cmd)
                dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
                ha->sns_cmd, ha->sns_cmd_dma);

        if (ha->ct_sns)
                dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
                ha->ct_sns, ha->ct_sns_dma);

        if (ha->sfp_data)
                dma_free_coherent(&ha->pdev->dev, SFP_DEV_SIZE, ha->sfp_data,
                    ha->sfp_data_dma);

        if (ha->ms_iocb)
                dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);

        if (ha->ex_init_cb)
                dma_pool_free(ha->s_dma_pool,
                        ha->ex_init_cb, ha->ex_init_cb_dma);

        if (ha->async_pd)
                dma_pool_free(ha->s_dma_pool, ha->async_pd, ha->async_pd_dma);

        if (ha->s_dma_pool)
                dma_pool_destroy(ha->s_dma_pool);

        if (ha->gid_list)
                dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
                ha->gid_list, ha->gid_list_dma);

        if (IS_QLA82XX(ha)) {
                if (!list_empty(&ha->gbl_dsd_list)) {
                        struct dsd_dma *dsd_ptr, *tdsd_ptr;

                        /* clean up allocated prev pool */
                        list_for_each_entry_safe(dsd_ptr,
                                tdsd_ptr, &ha->gbl_dsd_list, list) {
                                dma_pool_free(ha->dl_dma_pool,
                                dsd_ptr->dsd_addr, dsd_ptr->dsd_list_dma);
                                list_del(&dsd_ptr->list);
                                kfree(dsd_ptr);
                        }
                }
        }

        if (ha->dl_dma_pool)
                dma_pool_destroy(ha->dl_dma_pool);

        if (ha->fcp_cmnd_dma_pool)
                dma_pool_destroy(ha->fcp_cmnd_dma_pool);

        if (ha->ctx_mempool)
                mempool_destroy(ha->ctx_mempool);

        qlt_mem_free(ha);

        if (ha->init_cb)
                dma_free_coherent(&ha->pdev->dev, ha->init_cb_size,
                        ha->init_cb, ha->init_cb_dma);

        vfree(ha->optrom_buffer);
        kfree(ha->nvram);
        kfree(ha->npiv_info);
        kfree(ha->swl);
        kfree(ha->loop_id_map);

        ha->srb_mempool = NULL;
        ha->ctx_mempool = NULL;
        ha->sns_cmd = NULL;
        ha->sns_cmd_dma = 0;
        ha->ct_sns = NULL;
        ha->ct_sns_dma = 0;
        ha->ms_iocb = NULL;
        ha->ms_iocb_dma = 0;
        ha->init_cb = NULL;
        ha->init_cb_dma = 0;
        ha->ex_init_cb = NULL;
        ha->ex_init_cb_dma = 0;
        ha->async_pd = NULL;
        ha->async_pd_dma = 0;
        ha->loop_id_map = NULL;
        ha->npiv_info = NULL;
        ha->optrom_buffer = NULL;
        ha->swl = NULL;
        ha->nvram = NULL;
        ha->mctp_dump = NULL;
        ha->dcbx_tlv = NULL;
        ha->xgmac_data = NULL;
        ha->sfp_data = NULL;

        ha->s_dma_pool = NULL;
        ha->dl_dma_pool = NULL;
        ha->fcp_cmnd_dma_pool = NULL;

        ha->gid_list = NULL;
        ha->gid_list_dma = 0;

        ha->tgt.atio_ring = NULL;
        ha->tgt.atio_dma = 0;
        ha->tgt.tgt_vp_map = NULL;
}

struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *sht,
                                                struct qla_hw_data *ha)
{
        struct Scsi_Host *host;
        struct scsi_qla_host *vha = NULL;

        host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
        if (!host) {
                ql_log_pci(ql_log_fatal, ha->pdev, 0x0107,
                    "Failed to allocate host from the scsi layer, aborting.\n");
                return NULL;
        }

        /* Clear our data area */
        vha = shost_priv(host);
        memset(vha, 0, sizeof(scsi_qla_host_t));

        vha->host = host;
        vha->host_no = host->host_no;
        vha->hw = ha;

        vha->qlini_mode = ql2x_ini_mode;
        vha->ql2xexchoffld = ql2xexchoffld;
        vha->ql2xiniexchg = ql2xiniexchg;

        INIT_LIST_HEAD(&vha->vp_fcports);
        INIT_LIST_HEAD(&vha->work_list);
        INIT_LIST_HEAD(&vha->list);
        INIT_LIST_HEAD(&vha->qla_cmd_list);
        INIT_LIST_HEAD(&vha->qla_sess_op_cmd_list);
        INIT_LIST_HEAD(&vha->logo_list);
        INIT_LIST_HEAD(&vha->plogi_ack_list);
        INIT_LIST_HEAD(&vha->qp_list);
        INIT_LIST_HEAD(&vha->gnl.fcports);
        INIT_LIST_HEAD(&vha->nvme_rport_list);
        INIT_LIST_HEAD(&vha->gpnid_list);
        INIT_WORK(&vha->iocb_work, qla2x00_iocb_work_fn);

        spin_lock_init(&vha->work_lock);
        spin_lock_init(&vha->cmd_list_lock);
        init_waitqueue_head(&vha->fcport_waitQ);
        init_waitqueue_head(&vha->vref_waitq);

        vha->gnl.size = sizeof(struct get_name_list_extended) *
                        (ha->max_loop_id + 1);
        vha->gnl.l = dma_alloc_coherent(&ha->pdev->dev,
            vha->gnl.size, &vha->gnl.ldma, GFP_KERNEL);
        if (!vha->gnl.l) {
                ql_log(ql_log_fatal, vha, 0xd04a,
                    "Alloc failed for name list.\n");
                scsi_remove_host(vha->host);
                return NULL;
        }

        /* todo: what about ext login? */
        vha->scan.size = ha->max_fibre_devices * sizeof(struct fab_scan_rp);
        vha->scan.l = vmalloc(vha->scan.size);
        if (!vha->scan.l) {
                ql_log(ql_log_fatal, vha, 0xd04a,
                    "Alloc failed for scan database.\n");
                dma_free_coherent(&ha->pdev->dev, vha->gnl.size,
                    vha->gnl.l, vha->gnl.ldma);
                scsi_remove_host(vha->host);
                return NULL;
        }
        INIT_DELAYED_WORK(&vha->scan.scan_work, qla_scan_work_fn);

        sprintf(vha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, vha->host_no);
        ql_dbg(ql_dbg_init, vha, 0x0041,
            "Allocated the host=%p hw=%p vha=%p dev_name=%s",
            vha->host, vha->hw, vha,
            dev_name(&(ha->pdev->dev)));

        return vha;
}

struct qla_work_evt *
qla2x00_alloc_work(struct scsi_qla_host *vha, enum qla_work_type type)
{
        struct qla_work_evt *e;
        uint8_t bail;

        QLA_VHA_MARK_BUSY(vha, bail);
        if (bail)
                return NULL;

        e = kzalloc(sizeof(struct qla_work_evt), GFP_ATOMIC);
        if (!e) {
                QLA_VHA_MARK_NOT_BUSY(vha);
                return NULL;
        }

        INIT_LIST_HEAD(&e->list);
        e->type = type;
        e->flags = QLA_EVT_FLAG_FREE;
        return e;
}

int
qla2x00_post_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
{
        unsigned long flags;
        bool q = false;

        spin_lock_irqsave(&vha->work_lock, flags);
        list_add_tail(&e->list, &vha->work_list);

        if (!test_and_set_bit(IOCB_WORK_ACTIVE, &vha->dpc_flags))
                q = true;

        spin_unlock_irqrestore(&vha->work_lock, flags);

        if (q)
                queue_work(vha->hw->wq, &vha->iocb_work);

        return QLA_SUCCESS;
}

int
qla2x00_post_aen_work(struct scsi_qla_host *vha, enum fc_host_event_code code,
    u32 data)
{
        struct qla_work_evt *e;

        e = qla2x00_alloc_work(vha, QLA_EVT_AEN);
        if (!e)
                return QLA_FUNCTION_FAILED;

        e->u.aen.code = code;
        e->u.aen.data = data;
        return qla2x00_post_work(vha, e);
}

int
qla2x00_post_idc_ack_work(struct scsi_qla_host *vha, uint16_t *mb)
{
        struct qla_work_evt *e;

        e = qla2x00_alloc_work(vha, QLA_EVT_IDC_ACK);
        if (!e)
                return QLA_FUNCTION_FAILED;

        memcpy(e->u.idc_ack.mb, mb, QLA_IDC_ACK_REGS * sizeof(uint16_t));
        return qla2x00_post_work(vha, e);
}

#define qla2x00_post_async_work(name, type)     \
int qla2x00_post_async_##name##_work(           \
    struct scsi_qla_host *vha,                  \
    fc_port_t *fcport, uint16_t *data)          \
{                                               \
        struct qla_work_evt *e;                 \
                                                \
        e = qla2x00_alloc_work(vha, type);      \
        if (!e)                                 \
                return QLA_FUNCTION_FAILED;     \
                                                \
        e->u.logio.fcport = fcport;             \
        if (data) {                             \
                e->u.logio.data[0] = data[0];   \
                e->u.logio.data[1] = data[1];   \
        }                                       \
        fcport->flags |= FCF_ASYNC_ACTIVE;      \
        return qla2x00_post_work(vha, e);       \
}

qla2x00_post_async_work(login, QLA_EVT_ASYNC_LOGIN);
qla2x00_post_async_work(logout, QLA_EVT_ASYNC_LOGOUT);
qla2x00_post_async_work(logout_done, QLA_EVT_ASYNC_LOGOUT_DONE);
qla2x00_post_async_work(adisc, QLA_EVT_ASYNC_ADISC);
qla2x00_post_async_work(prlo, QLA_EVT_ASYNC_PRLO);
qla2x00_post_async_work(prlo_done, QLA_EVT_ASYNC_PRLO_DONE);

int
qla2x00_post_uevent_work(struct scsi_qla_host *vha, u32 code)
{
        struct qla_work_evt *e;

        e = qla2x00_alloc_work(vha, QLA_EVT_UEVENT);
        if (!e)
                return QLA_FUNCTION_FAILED;

        e->u.uevent.code = code;
        return qla2x00_post_work(vha, e);
}

static void
qla2x00_uevent_emit(struct scsi_qla_host *vha, u32 code)
{
        char event_string[40];
        char *envp[] = { event_string, NULL };

        switch (code) {
        case QLA_UEVENT_CODE_FW_DUMP:
                snprintf(event_string, sizeof(event_string), "FW_DUMP=%ld",
                    vha->host_no);
                break;
        default:
                /* do nothing */
                break;
        }
        kobject_uevent_env(&vha->hw->pdev->dev.kobj, KOBJ_CHANGE, envp);
}

int
qlafx00_post_aenfx_work(struct scsi_qla_host *vha,  uint32_t evtcode,
                        uint32_t *data, int cnt)
{
        struct qla_work_evt *e;

        e = qla2x00_alloc_work(vha, QLA_EVT_AENFX);
        if (!e)
                return QLA_FUNCTION_FAILED;

        e->u.aenfx.evtcode = evtcode;
        e->u.aenfx.count = cnt;
        memcpy(e->u.aenfx.mbx, data, sizeof(*data) * cnt);
        return qla2x00_post_work(vha, e);
}

void qla24xx_sched_upd_fcport(fc_port_t *fcport)
{
        unsigned long flags;

        if (IS_SW_RESV_ADDR(fcport->d_id))
                return;

        spin_lock_irqsave(&fcport->vha->work_lock, flags);
        if (fcport->disc_state == DSC_UPD_FCPORT) {
                spin_unlock_irqrestore(&fcport->vha->work_lock, flags);
                return;
        }
        fcport->jiffies_at_registration = jiffies;
        fcport->sec_since_registration = 0;
        fcport->next_disc_state = DSC_DELETED;
        fcport->disc_state = DSC_UPD_FCPORT;
        spin_unlock_irqrestore(&fcport->vha->work_lock, flags);

        queue_work(system_unbound_wq, &fcport->reg_work);
}

static
void qla24xx_create_new_sess(struct scsi_qla_host *vha, struct qla_work_evt *e)
{
        unsigned long flags;
        fc_port_t *fcport =  NULL, *tfcp;
        struct qlt_plogi_ack_t *pla =
            (struct qlt_plogi_ack_t *)e->u.new_sess.pla;
        uint8_t free_fcport = 0;

        ql_dbg(ql_dbg_disc, vha, 0xffff,
            "%s %d %8phC enter\n",
            __func__, __LINE__, e->u.new_sess.port_name);

        spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
        fcport = qla2x00_find_fcport_by_wwpn(vha, e->u.new_sess.port_name, 1);
        if (fcport) {
                fcport->d_id = e->u.new_sess.id;
                if (pla) {
                        fcport->fw_login_state = DSC_LS_PLOGI_PEND;
                        memcpy(fcport->node_name,
                            pla->iocb.u.isp24.u.plogi.node_name,
                            WWN_SIZE);
                        qlt_plogi_ack_link(vha, pla, fcport, QLT_PLOGI_LINK_SAME_WWN);
                        /* we took an extra ref_count to prevent PLOGI ACK when
                         * fcport/sess has not been created.
                         */
                        pla->ref_count--;
                }
        } else {
                spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
                fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
                if (fcport) {
                        fcport->d_id = e->u.new_sess.id;
                        fcport->flags |= FCF_FABRIC_DEVICE;
                        fcport->fw_login_state = DSC_LS_PLOGI_PEND;
                        if (e->u.new_sess.fc4_type & FS_FC4TYPE_FCP)
                                fcport->fc4_type = FC4_TYPE_FCP_SCSI;

                        if (e->u.new_sess.fc4_type & FS_FC4TYPE_NVME) {
                                fcport->fc4_type = FC4_TYPE_OTHER;
                                fcport->fc4f_nvme = FC4_TYPE_NVME;
                        }

                        memcpy(fcport->port_name, e->u.new_sess.port_name,
                            WWN_SIZE);
                } else {
                        ql_dbg(ql_dbg_disc, vha, 0xffff,
                                   "%s %8phC mem alloc fail.\n",
                                   __func__, e->u.new_sess.port_name);

                        if (pla)
                                kmem_cache_free(qla_tgt_plogi_cachep, pla);
                        return;
                }

                spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
                /* search again to make sure no one else got ahead */
                tfcp = qla2x00_find_fcport_by_wwpn(vha,
                    e->u.new_sess.port_name, 1);
                if (tfcp) {
                        /* should rarily happen */
                        ql_dbg(ql_dbg_disc, vha, 0xffff,
                            "%s %8phC found existing fcport b4 add. DS %d LS %d\n",
                            __func__, tfcp->port_name, tfcp->disc_state,
                            tfcp->fw_login_state);

                        free_fcport = 1;
                } else {
                        list_add_tail(&fcport->list, &vha->vp_fcports);

                }
                if (pla) {
                        qlt_plogi_ack_link(vha, pla, fcport,
                            QLT_PLOGI_LINK_SAME_WWN);
                        pla->ref_count--;
                }
        }
        spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);

        if (fcport) {
                fcport->id_changed = 1;
                fcport->scan_state = QLA_FCPORT_FOUND;
                memcpy(fcport->node_name, e->u.new_sess.node_name, WWN_SIZE);

                if (pla) {
                        if (pla->iocb.u.isp24.status_subcode == ELS_PRLI) {
                                u16 wd3_lo;

                                fcport->fw_login_state = DSC_LS_PRLI_PEND;
                                fcport->local = 0;
                                fcport->loop_id =
                                        le16_to_cpu(
                                            pla->iocb.u.isp24.nport_handle);
                                fcport->fw_login_state = DSC_LS_PRLI_PEND;
                                wd3_lo =
                                    le16_to_cpu(
                                        pla->iocb.u.isp24.u.prli.wd3_lo);

                                if (wd3_lo & BIT_7)
                                        fcport->conf_compl_supported = 1;

                                if ((wd3_lo & BIT_4) == 0)
                                        fcport->port_type = FCT_INITIATOR;
                                else
                                        fcport->port_type = FCT_TARGET;
                        }
                        qlt_plogi_ack_unref(vha, pla);
                } else {
                        fc_port_t *dfcp = NULL;

                        spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
                        tfcp = qla2x00_find_fcport_by_nportid(vha,
                            &e->u.new_sess.id, 1);
                        if (tfcp && (tfcp != fcport)) {
                                /*
                                 * We have a conflict fcport with same NportID.
                                 */
                                ql_dbg(ql_dbg_disc, vha, 0xffff,
                                    "%s %8phC found conflict b4 add. DS %d LS %d\n",
                                    __func__, tfcp->port_name, tfcp->disc_state,
                                    tfcp->fw_login_state);

                                switch (tfcp->disc_state) {
                                case DSC_DELETED:
                                        break;
                                case DSC_DELETE_PEND:
                                        fcport->login_pause = 1;
                                        tfcp->conflict = fcport;
                                        break;
                                default:
                                        fcport->login_pause = 1;
                                        tfcp->conflict = fcport;
                                        dfcp = tfcp;
                                        break;
                                }
                        }
                        spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
                        if (dfcp)
                                qlt_schedule_sess_for_deletion(tfcp);


                        if (N2N_TOPO(vha->hw))
                                fcport->flags &= ~FCF_FABRIC_DEVICE;

                        if (N2N_TOPO(vha->hw)) {
                                if (vha->flags.nvme_enabled) {
                                        fcport->fc4f_nvme = 1;
                                        fcport->n2n_flag = 1;
                                }
                                fcport->fw_login_state = 0;
                                /*
                                 * wait link init done before sending login
                                 */
                        } else {
                                qla24xx_fcport_handle_login(vha, fcport);
                        }
                }
        }

        if (free_fcport) {
                qla2x00_free_fcport(fcport);
                if (pla)
                        kmem_cache_free(qla_tgt_plogi_cachep, pla);
        }
}

static void qla_sp_retry(struct scsi_qla_host *vha, struct qla_work_evt *e)
{
        struct srb *sp = e->u.iosb.sp;
        int rval;

        rval = qla2x00_start_sp(sp);
        if (rval != QLA_SUCCESS) {
                ql_dbg(ql_dbg_disc, vha, 0x2043,
                    "%s: %s: Re-issue IOCB failed (%d).\n",
                    __func__, sp->name, rval);
                qla24xx_sp_unmap(vha, sp);
        }
}

void
qla2x00_do_work(struct scsi_qla_host *vha)
{
        struct qla_work_evt *e, *tmp;
        unsigned long flags;
        LIST_HEAD(work);

        spin_lock_irqsave(&vha->work_lock, flags);
        list_splice_init(&vha->work_list, &work);
        spin_unlock_irqrestore(&vha->work_lock, flags);

        list_for_each_entry_safe(e, tmp, &work, list) {
                list_del_init(&e->list);

                switch (e->type) {
                case QLA_EVT_AEN:
                        fc_host_post_event(vha->host, fc_get_event_number(),
                            e->u.aen.code, e->u.aen.data);
                        break;
                case QLA_EVT_IDC_ACK:
                        qla81xx_idc_ack(vha, e->u.idc_ack.mb);
                        break;
                case QLA_EVT_ASYNC_LOGIN:
                        qla2x00_async_login(vha, e->u.logio.fcport,
                            e->u.logio.data);
                        break;
                case QLA_EVT_ASYNC_LOGOUT:
                        qla2x00_async_logout(vha, e->u.logio.fcport);
                        break;
                case QLA_EVT_ASYNC_LOGOUT_DONE:
                        qla2x00_async_logout_done(vha, e->u.logio.fcport,
                            e->u.logio.data);
                        break;
                case QLA_EVT_ASYNC_ADISC:
                        qla2x00_async_adisc(vha, e->u.logio.fcport,
                            e->u.logio.data);
                        break;
                case QLA_EVT_UEVENT:
                        qla2x00_uevent_emit(vha, e->u.uevent.code);
                        break;
                case QLA_EVT_AENFX:
                        qlafx00_process_aen(vha, e);
                        break;
                case QLA_EVT_GPNID:
                        qla24xx_async_gpnid(vha, &e->u.gpnid.id);
                        break;
                case QLA_EVT_UNMAP:
                        qla24xx_sp_unmap(vha, e->u.iosb.sp);
                        break;
                case QLA_EVT_RELOGIN:
                        qla2x00_relogin(vha);
                        break;
                case QLA_EVT_NEW_SESS:
                        qla24xx_create_new_sess(vha, e);
                        break;
                case QLA_EVT_GPDB:
                        qla24xx_async_gpdb(vha, e->u.fcport.fcport,
                            e->u.fcport.opt);
                        break;
                case QLA_EVT_PRLI:
                        qla24xx_async_prli(vha, e->u.fcport.fcport);
                        break;
                case QLA_EVT_GPSC:
                        qla24xx_async_gpsc(vha, e->u.fcport.fcport);
                        break;
                case QLA_EVT_GNL:
                        qla24xx_async_gnl(vha, e->u.fcport.fcport);
                        break;
                case QLA_EVT_NACK:
                        qla24xx_do_nack_work(vha, e);
                        break;
                case QLA_EVT_ASYNC_PRLO:
                        qla2x00_async_prlo(vha, e->u.logio.fcport);
                        break;
                case QLA_EVT_ASYNC_PRLO_DONE:
                        qla2x00_async_prlo_done(vha, e->u.logio.fcport,
                            e->u.logio.data);
                        break;
                case QLA_EVT_GPNFT:
                        qla24xx_async_gpnft(vha, e->u.gpnft.fc4_type,
                            e->u.gpnft.sp);
                        break;
                case QLA_EVT_GPNFT_DONE:
                        qla24xx_async_gpnft_done(vha, e->u.iosb.sp);
                        break;
                case QLA_EVT_GNNFT_DONE:
                        qla24xx_async_gnnft_done(vha, e->u.iosb.sp);
                        break;
                case QLA_EVT_GNNID:
                        qla24xx_async_gnnid(vha, e->u.fcport.fcport);
                        break;
                case QLA_EVT_GFPNID:
                        qla24xx_async_gfpnid(vha, e->u.fcport.fcport);
                        break;
                case QLA_EVT_SP_RETRY:
                        qla_sp_retry(vha, e);
                        break;
                case QLA_EVT_IIDMA:
                        qla_do_iidma_work(vha, e->u.fcport.fcport);
                        break;
                case QLA_EVT_ELS_PLOGI:
                        qla24xx_els_dcmd2_iocb(vha, ELS_DCMD_PLOGI,
                            e->u.fcport.fcport, false);
                        break;
                }
                if (e->flags & QLA_EVT_FLAG_FREE)
                        kfree(e);

                /* For each work completed decrement vha ref count */
                QLA_VHA_MARK_NOT_BUSY(vha);
        }
}

int qla24xx_post_relogin_work(struct scsi_qla_host *vha)
{
        struct qla_work_evt *e;

        e = qla2x00_alloc_work(vha, QLA_EVT_RELOGIN);

        if (!e) {
                set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
                return QLA_FUNCTION_FAILED;
        }

        return qla2x00_post_work(vha, e);
}

/* Relogins all the fcports of a vport
 * Context: dpc thread
 */
void qla2x00_relogin(struct scsi_qla_host *vha)
{
        fc_port_t       *fcport;
        int status, relogin_needed = 0;
        struct event_arg ea;

        list_for_each_entry(fcport, &vha->vp_fcports, list) {
                /*
                 * If the port is not ONLINE then try to login
                 * to it if we haven't run out of retries.
                 */
                if (atomic_read(&fcport->state) != FCS_ONLINE &&
                    fcport->login_retry) {
                        if (fcport->scan_state != QLA_FCPORT_FOUND ||
                            fcport->disc_state == DSC_LOGIN_COMPLETE)
                                continue;

                        if (fcport->flags & (FCF_ASYNC_SENT|FCF_ASYNC_ACTIVE) ||
                                fcport->disc_state == DSC_DELETE_PEND) {
                                relogin_needed = 1;
                        } else {
                                if (vha->hw->current_topology != ISP_CFG_NL) {
                                        memset(&ea, 0, sizeof(ea));
                                        ea.event = FCME_RELOGIN;
                                        ea.fcport = fcport;
                                        qla2x00_fcport_event_handler(vha, &ea);
                                } else if (vha->hw->current_topology ==
                                    ISP_CFG_NL) {
                                        fcport->login_retry--;
                                        status =
                                            qla2x00_local_device_login(vha,
                                                fcport);
                                        if (status == QLA_SUCCESS) {
                                                fcport->old_loop_id =
                                                    fcport->loop_id;
                                                ql_dbg(ql_dbg_disc, vha, 0x2003,
                                                    "Port login OK: logged in ID 0x%x.\n",
                                                    fcport->loop_id);
                                                qla2x00_update_fcport
                                                        (vha, fcport);
                                        } else if (status == 1) {
                                                set_bit(RELOGIN_NEEDED,
                                                    &vha->dpc_flags);
                                                /* retry the login again */
                                                ql_dbg(ql_dbg_disc, vha, 0x2007,
                                                    "Retrying %d login again loop_id 0x%x.\n",
                                                    fcport->login_retry,
                                                    fcport->loop_id);
                                        } else {
                                                fcport->login_retry = 0;
                                        }

                                        if (fcport->login_retry == 0 &&
                                            status != QLA_SUCCESS)
                                                qla2x00_clear_loop_id(fcport);
                                }
                        }
                }
                if (test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags))
                        break;
        }

        if (relogin_needed)
                set_bit(RELOGIN_NEEDED, &vha->dpc_flags);

        ql_dbg(ql_dbg_disc, vha, 0x400e,
            "Relogin end.\n");
}

/* Schedule work on any of the dpc-workqueues */
void
qla83xx_schedule_work(scsi_qla_host_t *base_vha, int work_code)
{
        struct qla_hw_data *ha = base_vha->hw;

        switch (work_code) {
        case MBA_IDC_AEN: /* 0x8200 */
                if (ha->dpc_lp_wq)
                        queue_work(ha->dpc_lp_wq, &ha->idc_aen);
                break;

        case QLA83XX_NIC_CORE_RESET: /* 0x1 */
                if (!ha->flags.nic_core_reset_hdlr_active) {
                        if (ha->dpc_hp_wq)
                                queue_work(ha->dpc_hp_wq, &ha->nic_core_reset);
                } else
                        ql_dbg(ql_dbg_p3p, base_vha, 0xb05e,
                            "NIC Core reset is already active. Skip "
                            "scheduling it again.\n");
                break;
        case QLA83XX_IDC_STATE_HANDLER: /* 0x2 */
                if (ha->dpc_hp_wq)
                        queue_work(ha->dpc_hp_wq, &ha->idc_state_handler);
                break;
        case QLA83XX_NIC_CORE_UNRECOVERABLE: /* 0x3 */
                if (ha->dpc_hp_wq)
                        queue_work(ha->dpc_hp_wq, &ha->nic_core_unrecoverable);
                break;
        default:
                ql_log(ql_log_warn, base_vha, 0xb05f,
                    "Unknown work-code=0x%x.\n", work_code);
        }

        return;
}

/* Work: Perform NIC Core Unrecoverable state handling */
void
qla83xx_nic_core_unrecoverable_work(struct work_struct *work)
{
        struct qla_hw_data *ha =
                container_of(work, struct qla_hw_data, nic_core_unrecoverable);
        scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
        uint32_t dev_state = 0;

        qla83xx_idc_lock(base_vha, 0);
        qla83xx_rd_reg(base_vha, QLA83XX_IDC_DEV_STATE, &dev_state);
        qla83xx_reset_ownership(base_vha);
        if (ha->flags.nic_core_reset_owner) {
                ha->flags.nic_core_reset_owner = 0;
                qla83xx_wr_reg(base_vha, QLA83XX_IDC_DEV_STATE,
                    QLA8XXX_DEV_FAILED);
                ql_log(ql_log_info, base_vha, 0xb060, "HW State: FAILED.\n");
                qla83xx_schedule_work(base_vha, QLA83XX_IDC_STATE_HANDLER);
        }
        qla83xx_idc_unlock(base_vha, 0);
}

/* Work: Execute IDC state handler */
void
qla83xx_idc_state_handler_work(struct work_struct *work)
{
        struct qla_hw_data *ha =
                container_of(work, struct qla_hw_data, idc_state_handler);
        scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
        uint32_t dev_state = 0;

        qla83xx_idc_lock(base_vha, 0);
        qla83xx_rd_reg(base_vha, QLA83XX_IDC_DEV_STATE, &dev_state);
        if (dev_state == QLA8XXX_DEV_FAILED ||
                        dev_state == QLA8XXX_DEV_NEED_QUIESCENT)
                qla83xx_idc_state_handler(base_vha);
        qla83xx_idc_unlock(base_vha, 0);
}

static int
qla83xx_check_nic_core_fw_alive(scsi_qla_host_t *base_vha)
{
        int rval = QLA_SUCCESS;
        unsigned long heart_beat_wait = jiffies + (1 * HZ);
        uint32_t heart_beat_counter1, heart_beat_counter2;

        do {
                if (time_after(jiffies, heart_beat_wait)) {
                        ql_dbg(ql_dbg_p3p, base_vha, 0xb07c,
                            "Nic Core f/w is not alive.\n");
                        rval = QLA_FUNCTION_FAILED;
                        break;
                }

                qla83xx_idc_lock(base_vha, 0);
                qla83xx_rd_reg(base_vha, QLA83XX_FW_HEARTBEAT,
                    &heart_beat_counter1);
                qla83xx_idc_unlock(base_vha, 0);
                msleep(100);
                qla83xx_idc_lock(base_vha, 0);
                qla83xx_rd_reg(base_vha, QLA83XX_FW_HEARTBEAT,
                    &heart_beat_counter2);
                qla83xx_idc_unlock(base_vha, 0);
        } while (heart_beat_counter1 == heart_beat_counter2);

        return rval;
}

/* Work: Perform NIC Core Reset handling */
void
qla83xx_nic_core_reset_work(struct work_struct *work)
{
        struct qla_hw_data *ha =
                container_of(work, struct qla_hw_data, nic_core_reset);
        scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
        uint32_t dev_state = 0;

        if (IS_QLA2031(ha)) {
                if (qla2xxx_mctp_dump(base_vha) != QLA_SUCCESS)
                        ql_log(ql_log_warn, base_vha, 0xb081,
                            "Failed to dump mctp\n");
                return;
        }

        if (!ha->flags.nic_core_reset_hdlr_active) {
                if (qla83xx_check_nic_core_fw_alive(base_vha) == QLA_SUCCESS) {
                        qla83xx_idc_lock(base_vha, 0);
                        qla83xx_rd_reg(base_vha, QLA83XX_IDC_DEV_STATE,
                            &dev_state);
                        qla83xx_idc_unlock(base_vha, 0);
                        if (dev_state != QLA8XXX_DEV_NEED_RESET) {
                                ql_dbg(ql_dbg_p3p, base_vha, 0xb07a,
                                    "Nic Core f/w is alive.\n");
                                return;
                        }
                }

                ha->flags.nic_core_reset_hdlr_active = 1;
                if (qla83xx_nic_core_reset(base_vha)) {
                        /* NIC Core reset failed. */
                        ql_dbg(ql_dbg_p3p, base_vha, 0xb061,
                            "NIC Core reset failed.\n");
                }
                ha->flags.nic_core_reset_hdlr_active = 0;
        }
}

/* Work: Handle 8200 IDC aens */
void
qla83xx_service_idc_aen(struct work_struct *work)
{
        struct qla_hw_data *ha =
                container_of(work, struct qla_hw_data, idc_aen);
        scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
        uint32_t dev_state, idc_control;

        qla83xx_idc_lock(base_vha, 0);
        qla83xx_rd_reg(base_vha, QLA83XX_IDC_DEV_STATE, &dev_state);
        qla83xx_rd_reg(base_vha, QLA83XX_IDC_CONTROL, &idc_control);
        qla83xx_idc_unlock(base_vha, 0);
        if (dev_state == QLA8XXX_DEV_NEED_RESET) {
                if (idc_control & QLA83XX_IDC_GRACEFUL_RESET) {
                        ql_dbg(ql_dbg_p3p, base_vha, 0xb062,
                            "Application requested NIC Core Reset.\n");
                        qla83xx_schedule_work(base_vha, QLA83XX_NIC_CORE_RESET);
                } else if (qla83xx_check_nic_core_fw_alive(base_vha) ==
                    QLA_SUCCESS) {
                        ql_dbg(ql_dbg_p3p, base_vha, 0xb07b,
                            "Other protocol driver requested NIC Core Reset.\n");
                        qla83xx_schedule_work(base_vha, QLA83XX_NIC_CORE_RESET);
                }
        } else if (dev_state == QLA8XXX_DEV_FAILED ||
                        dev_state == QLA8XXX_DEV_NEED_QUIESCENT) {
                qla83xx_schedule_work(base_vha, QLA83XX_IDC_STATE_HANDLER);
        }
}

static void
qla83xx_wait_logic(void)
{
        int i;

        /* Yield CPU */
        if (!in_interrupt()) {
                /*
                 * Wait about 200ms before retrying again.
                 * This controls the number of retries for single
                 * lock operation.
                 */
                msleep(100);
                schedule();
        } else {
                for (i = 0; i < 20; i++)
                        cpu_relax(); /* This a nop instr on i386 */
        }
}

static int
qla83xx_force_lock_recovery(scsi_qla_host_t *base_vha)
{
        int rval;
        uint32_t data;
        uint32_t idc_lck_rcvry_stage_mask = 0x3;
        uint32_t idc_lck_rcvry_owner_mask = 0x3c;
        struct qla_hw_data *ha = base_vha->hw;
        ql_dbg(ql_dbg_p3p, base_vha, 0xb086,
            "Trying force recovery of the IDC lock.\n");

        rval = qla83xx_rd_reg(base_vha, QLA83XX_IDC_LOCK_RECOVERY, &data);
        if (rval)
                return rval;

        if ((data & idc_lck_rcvry_stage_mask) > 0) {
                return QLA_SUCCESS;
        } else {
                data = (IDC_LOCK_RECOVERY_STAGE1) | (ha->portnum << 2);
                rval = qla83xx_wr_reg(base_vha, QLA83XX_IDC_LOCK_RECOVERY,
                    data);
                if (rval)
                        return rval;

                msleep(200);

                rval = qla83xx_rd_reg(base_vha, QLA83XX_IDC_LOCK_RECOVERY,
                    &data);
                if (rval)
                        return rval;

                if (((data & idc_lck_rcvry_owner_mask) >> 2) == ha->portnum) {
                        data &= (IDC_LOCK_RECOVERY_STAGE2 |
                                        ~(idc_lck_rcvry_stage_mask));
                        rval = qla83xx_wr_reg(base_vha,
                            QLA83XX_IDC_LOCK_RECOVERY, data);
                        if (rval)
                                return rval;

                        /* Forcefully perform IDC UnLock */
                        rval = qla83xx_rd_reg(base_vha, QLA83XX_DRIVER_UNLOCK,
                            &data);
                        if (rval)
                                return rval;
                        /* Clear lock-id by setting 0xff */
                        rval = qla83xx_wr_reg(base_vha, QLA83XX_DRIVER_LOCKID,
                            0xff);
                        if (rval)
                                return rval;
                        /* Clear lock-recovery by setting 0x0 */
                        rval = qla83xx_wr_reg(base_vha,
                            QLA83XX_IDC_LOCK_RECOVERY, 0x0);
                        if (rval)
                                return rval;
                } else
                        return QLA_SUCCESS;
        }

        return rval;
}

static int
qla83xx_idc_lock_recovery(scsi_qla_host_t *base_vha)
{
        int rval = QLA_SUCCESS;
        uint32_t o_drv_lockid, n_drv_lockid;
        unsigned long lock_recovery_timeout;

        lock_recovery_timeout = jiffies + QLA83XX_MAX_LOCK_RECOVERY_WAIT;
retry_lockid:
        rval = qla83xx_rd_reg(base_vha, QLA83XX_DRIVER_LOCKID, &o_drv_lockid);
        if (rval)
                goto exit;

        /* MAX wait time before forcing IDC Lock recovery = 2 secs */
        if (time_after_eq(jiffies, lock_recovery_timeout)) {
                if (qla83xx_force_lock_recovery(base_vha) == QLA_SUCCESS)
                        return QLA_SUCCESS;
                else
                        return QLA_FUNCTION_FAILED;
        }

        rval = qla83xx_rd_reg(base_vha, QLA83XX_DRIVER_LOCKID, &n_drv_lockid);
        if (rval)
                goto exit;

        if (o_drv_lockid == n_drv_lockid) {
                qla83xx_wait_logic();
                goto retry_lockid;
        } else
                return QLA_SUCCESS;

exit:
        return rval;
}

void
qla83xx_idc_lock(scsi_qla_host_t *base_vha, uint16_t requester_id)
{
        uint16_t options = (requester_id << 15) | BIT_6;
        uint32_t data;
        uint32_t lock_owner;
        struct qla_hw_data *ha = base_vha->hw;

        /* IDC-lock implementation using driver-lock/lock-id remote registers */
retry_lock:
        if (qla83xx_rd_reg(base_vha, QLA83XX_DRIVER_LOCK, &data)
            == QLA_SUCCESS) {
                if (data) {
                        /* Setting lock-id to our function-number */
                        qla83xx_wr_reg(base_vha, QLA83XX_DRIVER_LOCKID,
                            ha->portnum);
                } else {
                        qla83xx_rd_reg(base_vha, QLA83XX_DRIVER_LOCKID,
                            &lock_owner);
                        ql_dbg(ql_dbg_p3p, base_vha, 0xb063,
                            "Failed to acquire IDC lock, acquired by %d, "
                            "retrying...\n", lock_owner);

                        /* Retry/Perform IDC-Lock recovery */
                        if (qla83xx_idc_lock_recovery(base_vha)
                            == QLA_SUCCESS) {
                                qla83xx_wait_logic();
                                goto retry_lock;
                        } else
                                ql_log(ql_log_warn, base_vha, 0xb075,
                                    "IDC Lock recovery FAILED.\n");
                }

        }

        return;

        /* XXX: IDC-lock implementation using access-control mbx */
retry_lock2:
        if (qla83xx_access_control(base_vha, options, 0, 0, NULL)) {
                ql_dbg(ql_dbg_p3p, base_vha, 0xb072,
                    "Failed to acquire IDC lock. retrying...\n");
                /* Retry/Perform IDC-Lock recovery */
                if (qla83xx_idc_lock_recovery(base_vha) == QLA_SUCCESS) {
                        qla83xx_wait_logic();
                        goto retry_lock2;
                } else
                        ql_log(ql_log_warn, base_vha, 0xb076,
                            "IDC Lock recovery FAILED.\n");
        }

        return;
}

void
qla83xx_idc_unlock(scsi_qla_host_t *base_vha, uint16_t requester_id)
{
#if 0
        uint16_t options = (requester_id << 15) | BIT_7;
#endif
        uint16_t retry;
        uint32_t data;
        struct qla_hw_data *ha = base_vha->hw;

        /* IDC-unlock implementation using driver-unlock/lock-id
         * remote registers
         */
        retry = 0;
retry_unlock:
        if (qla83xx_rd_reg(base_vha, QLA83XX_DRIVER_LOCKID, &data)
            == QLA_SUCCESS) {
                if (data == ha->portnum) {
                        qla83xx_rd_reg(base_vha, QLA83XX_DRIVER_UNLOCK, &data);
                        /* Clearing lock-id by setting 0xff */
                        qla83xx_wr_reg(base_vha, QLA83XX_DRIVER_LOCKID, 0xff);
                } else if (retry < 10) {
                        /* SV: XXX: IDC unlock retrying needed here? */

                        /* Retry for IDC-unlock */
                        qla83xx_wait_logic();
                        retry++;
                        ql_dbg(ql_dbg_p3p, base_vha, 0xb064,
                            "Failed to release IDC lock, retrying=%d\n", retry);
                        goto retry_unlock;
                }
        } else if (retry < 10) {
                /* Retry for IDC-unlock */
                qla83xx_wait_logic();
                retry++;
                ql_dbg(ql_dbg_p3p, base_vha, 0xb065,
                    "Failed to read drv-lockid, retrying=%d\n", retry);
                goto retry_unlock;
        }

        return;

#if 0
        /* XXX: IDC-unlock implementation using access-control mbx */
        retry = 0;
retry_unlock2:
        if (qla83xx_access_control(base_vha, options, 0, 0, NULL)) {
                if (retry < 10) {
                        /* Retry for IDC-unlock */
                        qla83xx_wait_logic();
                        retry++;
                        ql_dbg(ql_dbg_p3p, base_vha, 0xb066,
                            "Failed to release IDC lock, retrying=%d\n", retry);
                        goto retry_unlock2;
                }
        }

        return;
#endif
}

int
__qla83xx_set_drv_presence(scsi_qla_host_t *vha)
{
        int rval = QLA_SUCCESS;
        struct qla_hw_data *ha = vha->hw;
        uint32_t drv_presence;

        rval = qla83xx_rd_reg(vha, QLA83XX_IDC_DRV_PRESENCE, &drv_presence);
        if (rval == QLA_SUCCESS) {
                drv_presence |= (1 << ha->portnum);
                rval = qla83xx_wr_reg(vha, QLA83XX_IDC_DRV_PRESENCE,
                    drv_presence);
        }

        return rval;
}

int
qla83xx_set_drv_presence(scsi_qla_host_t *vha)
{
        int rval = QLA_SUCCESS;

        qla83xx_idc_lock(vha, 0);
        rval = __qla83xx_set_drv_presence(vha);
        qla83xx_idc_unlock(vha, 0);

        return rval;
}

int
__qla83xx_clear_drv_presence(scsi_qla_host_t *vha)
{
        int rval = QLA_SUCCESS;
        struct qla_hw_data *ha = vha->hw;
        uint32_t drv_presence;

        rval = qla83xx_rd_reg(vha, QLA83XX_IDC_DRV_PRESENCE, &drv_presence);
        if (rval == QLA_SUCCESS) {
                drv_presence &= ~(1 << ha->portnum);
                rval = qla83xx_wr_reg(vha, QLA83XX_IDC_DRV_PRESENCE,
                    drv_presence);
        }

        return rval;
}

int
qla83xx_clear_drv_presence(scsi_qla_host_t *vha)
{
        int rval = QLA_SUCCESS;

        qla83xx_idc_lock(vha, 0);
        rval = __qla83xx_clear_drv_presence(vha);
        qla83xx_idc_unlock(vha, 0);

        return rval;
}

static void
qla83xx_need_reset_handler(scsi_qla_host_t *vha)
{
        struct qla_hw_data *ha = vha->hw;
        uint32_t drv_ack, drv_presence;
        unsigned long ack_timeout;

        /* Wait for IDC ACK from all functions (DRV-ACK == DRV-PRESENCE) */
        ack_timeout = jiffies + (ha->fcoe_reset_timeout * HZ);
        while (1) {
                qla83xx_rd_reg(vha, QLA83XX_IDC_DRIVER_ACK, &drv_ack);
                qla83xx_rd_reg(vha, QLA83XX_IDC_DRV_PRESENCE, &drv_presence);
                if ((drv_ack & drv_presence) == drv_presence)
                        break;

                if (time_after_eq(jiffies, ack_timeout)) {
                        ql_log(ql_log_warn, vha, 0xb067,
                            "RESET ACK TIMEOUT! drv_presence=0x%x "
                            "drv_ack=0x%x\n", drv_presence, drv_ack);
                        /*
                         * The function(s) which did not ack in time are forced
                         * to withdraw any further participation in the IDC
                         * reset.
                         */
                        if (drv_ack != drv_presence)
                                qla83xx_wr_reg(vha, QLA83XX_IDC_DRV_PRESENCE,
                                    drv_ack);
                        break;
                }

                qla83xx_idc_unlock(vha, 0);
                msleep(1000);
                qla83xx_idc_lock(vha, 0);
        }

        qla83xx_wr_reg(vha, QLA83XX_IDC_DEV_STATE, QLA8XXX_DEV_COLD);
        ql_log(ql_log_info, vha, 0xb068, "HW State: COLD/RE-INIT.\n");
}

static int
qla83xx_device_bootstrap(scsi_qla_host_t *vha)
{
        int rval = QLA_SUCCESS;
        uint32_t idc_control;

        qla83xx_wr_reg(vha, QLA83XX_IDC_DEV_STATE, QLA8XXX_DEV_INITIALIZING);
        ql_log(ql_log_info, vha, 0xb069, "HW State: INITIALIZING.\n");

        /* Clearing IDC-Control Graceful-Reset Bit before resetting f/w */
        __qla83xx_get_idc_control(vha, &idc_control);
        idc_control &= ~QLA83XX_IDC_GRACEFUL_RESET;
        __qla83xx_set_idc_control(vha, 0);

        qla83xx_idc_unlock(vha, 0);
        rval = qla83xx_restart_nic_firmware(vha);
        qla83xx_idc_lock(vha, 0);

        if (rval != QLA_SUCCESS) {
                ql_log(ql_log_fatal, vha, 0xb06a,
                    "Failed to restart NIC f/w.\n");
                qla83xx_wr_reg(vha, QLA83XX_IDC_DEV_STATE, QLA8XXX_DEV_FAILED);
                ql_log(ql_log_info, vha, 0xb06b, "HW State: FAILED.\n");
        } else {
                ql_dbg(ql_dbg_p3p, vha, 0xb06c,
                    "Success in restarting nic f/w.\n");
                qla83xx_wr_reg(vha, QLA83XX_IDC_DEV_STATE, QLA8XXX_DEV_READY);
                ql_log(ql_log_info, vha, 0xb06d, "HW State: READY.\n");
        }

        return rval;
}

/* Assumes idc_lock always held on entry */
int
qla83xx_idc_state_handler(scsi_qla_host_t *base_vha)
{
        struct qla_hw_data *ha = base_vha->hw;
        int rval = QLA_SUCCESS;
        unsigned long dev_init_timeout;
        uint32_t dev_state;

        /* Wait for MAX-INIT-TIMEOUT for the device to go ready */
        dev_init_timeout = jiffies + (ha->fcoe_dev_init_timeout * HZ);

        while (1) {

                if (time_after_eq(jiffies, dev_init_timeout)) {
                        ql_log(ql_log_warn, base_vha, 0xb06e,
                            "Initialization TIMEOUT!\n");
                        /* Init timeout. Disable further NIC Core
                         * communication.
                         */
                        qla83xx_wr_reg(base_vha, QLA83XX_IDC_DEV_STATE,
                                QLA8XXX_DEV_FAILED);
                        ql_log(ql_log_info, base_vha, 0xb06f,
                            "HW State: FAILED.\n");
                }

                qla83xx_rd_reg(base_vha, QLA83XX_IDC_DEV_STATE, &dev_state);
                switch (dev_state) {
                case QLA8XXX_DEV_READY:
                        if (ha->flags.nic_core_reset_owner)
                                qla83xx_idc_audit(base_vha,
                                    IDC_AUDIT_COMPLETION);
                        ha->flags.nic_core_reset_owner = 0;
                        ql_dbg(ql_dbg_p3p, base_vha, 0xb070,
                            "Reset_owner reset by 0x%x.\n",
                            ha->portnum);
                        goto exit;
                case QLA8XXX_DEV_COLD:
                        if (ha->flags.nic_core_reset_owner)
                                rval = qla83xx_device_bootstrap(base_vha);
                        else {
                        /* Wait for AEN to change device-state */
                                qla83xx_idc_unlock(base_vha, 0);
                                msleep(1000);
                                qla83xx_idc_lock(base_vha, 0);
                        }
                        break;
                case QLA8XXX_DEV_INITIALIZING:
                        /* Wait for AEN to change device-state */
                        qla83xx_idc_unlock(base_vha, 0);
                        msleep(1000);
                        qla83xx_idc_lock(base_vha, 0);
                        break;
                case QLA8XXX_DEV_NEED_RESET:
                        if (!ql2xdontresethba && ha->flags.nic_core_reset_owner)
                                qla83xx_need_reset_handler(base_vha);
                        else {
                                /* Wait for AEN to change device-state */
                                qla83xx_idc_unlock(base_vha, 0);
                                msleep(1000);
                                qla83xx_idc_lock(base_vha, 0);
                        }
                        /* reset timeout value after need reset handler */
                        dev_init_timeout = jiffies +
                            (ha->fcoe_dev_init_timeout * HZ);
                        break;
                case QLA8XXX_DEV_NEED_QUIESCENT:
                        /* XXX: DEBUG for now */
                        qla83xx_idc_unlock(base_vha, 0);
                        msleep(1000);
                        qla83xx_idc_lock(base_vha, 0);
                        break;
                case QLA8XXX_DEV_QUIESCENT:
                        /* XXX: DEBUG for now */
                        if (ha->flags.quiesce_owner)
                                goto exit;

                        qla83xx_idc_unlock(base_vha, 0);
                        msleep(1000);
                        qla83xx_idc_lock(base_vha, 0);
                        dev_init_timeout = jiffies +
                            (ha->fcoe_dev_init_timeout * HZ);
                        break;
                case QLA8XXX_DEV_FAILED:
                        if (ha->flags.nic_core_reset_owner)
                                qla83xx_idc_audit(base_vha,
                                    IDC_AUDIT_COMPLETION);
                        ha->flags.nic_core_reset_owner = 0;
                        __qla83xx_clear_drv_presence(base_vha);
                        qla83xx_idc_unlock(base_vha, 0);
                        qla8xxx_dev_failed_handler(base_vha);
                        rval = QLA_FUNCTION_FAILED;
                        qla83xx_idc_lock(base_vha, 0);
                        goto exit;
                case QLA8XXX_BAD_VALUE:
                        qla83xx_idc_unlock(base_vha, 0);
                        msleep(1000);
                        qla83xx_idc_lock(base_vha, 0);
                        break;
                default:
                        ql_log(ql_log_warn, base_vha, 0xb071,
                            "Unknown Device State: %x.\n", dev_state);
                        qla83xx_idc_unlock(base_vha, 0);
                        qla8xxx_dev_failed_handler(base_vha);
                        rval = QLA_FUNCTION_FAILED;
                        qla83xx_idc_lock(base_vha, 0);
                        goto exit;
                }
        }

exit:
        return rval;
}

void
qla2x00_disable_board_on_pci_error(struct work_struct *work)
{
        struct qla_hw_data *ha = container_of(work, struct qla_hw_data,
            board_disable);
        struct pci_dev *pdev = ha->pdev;
        scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);

        /*
         * if UNLOAD flag is already set, then continue unload,
         * where it was set first.
         */
        if (test_bit(UNLOADING, &base_vha->dpc_flags))
                return;

        ql_log(ql_log_warn, base_vha, 0x015b,
            "Disabling adapter.\n");

        if (!atomic_read(&pdev->enable_cnt)) {
                ql_log(ql_log_info, base_vha, 0xfffc,
                    "PCI device disabled, no action req for PCI error=%lx\n",
                    base_vha->pci_flags);
                return;
        }

        qla2x00_wait_for_sess_deletion(base_vha);

        set_bit(UNLOADING, &base_vha->dpc_flags);

        qla2x00_delete_all_vps(ha, base_vha);

        qla2x00_abort_all_cmds(base_vha, DID_NO_CONNECT << 16);

        qla2x00_dfs_remove(base_vha);

        qla84xx_put_chip(base_vha);

        if (base_vha->timer_active)
                qla2x00_stop_timer(base_vha);

        base_vha->flags.online = 0;

        qla2x00_destroy_deferred_work(ha);

        /*
         * Do not try to stop beacon blink as it will issue a mailbox
         * command.
         */
        qla2x00_free_sysfs_attr(base_vha, false);

        fc_remove_host(base_vha->host);

        scsi_remove_host(base_vha->host);

        base_vha->flags.init_done = 0;
        qla25xx_delete_queues(base_vha);
        qla2x00_free_fcports(base_vha);
        qla2x00_free_irqs(base_vha);
        qla2x00_mem_free(ha);
        qla82xx_md_free(base_vha);
        qla2x00_free_queues(ha);

        qla2x00_unmap_iobases(ha);

        pci_release_selected_regions(ha->pdev, ha->bars);
        pci_disable_pcie_error_reporting(pdev);
        pci_disable_device(pdev);

        /*
         * Let qla2x00_remove_one cleanup qla_hw_data on device removal.
         */
}

/**************************************************************************
* qla2x00_do_dpc
*   This kernel thread is a task that is schedule by the interrupt handler
*   to perform the background processing for interrupts.
*
* Notes:
* This task always run in the context of a kernel thread.  It
* is kick-off by the driver's detect code and starts up
* up one per adapter. It immediately goes to sleep and waits for
* some fibre event.  When either the interrupt handler or
* the timer routine detects a event it will one of the task
* bits then wake us up.
**************************************************************************/
static int
qla2x00_do_dpc(void *data)
{
        scsi_qla_host_t *base_vha;
        struct qla_hw_data *ha;
        uint32_t online;
        struct qla_qpair *qpair;

        ha = (struct qla_hw_data *)data;
        base_vha = pci_get_drvdata(ha->pdev);

        set_user_nice(current, MIN_NICE);

        set_current_state(TASK_INTERRUPTIBLE);
        while (!kthread_should_stop()) {
                ql_dbg(ql_dbg_dpc, base_vha, 0x4000,
                    "DPC handler sleeping.\n");

                schedule();

                if (!base_vha->flags.init_done || ha->flags.mbox_busy)
                        goto end_loop;

                if (ha->flags.eeh_busy) {
                        ql_dbg(ql_dbg_dpc, base_vha, 0x4003,
                            "eeh_busy=%d.\n", ha->flags.eeh_busy);
                        goto end_loop;
                }

                ha->dpc_active = 1;

                ql_dbg(ql_dbg_dpc + ql_dbg_verbose, base_vha, 0x4001,
                    "DPC handler waking up, dpc_flags=0x%lx.\n",
                    base_vha->dpc_flags);

                if (test_bit(UNLOADING, &base_vha->dpc_flags))
                        break;

                if (IS_P3P_TYPE(ha)) {
                        if (IS_QLA8044(ha)) {
                                if (test_and_clear_bit(ISP_UNRECOVERABLE,
                                        &base_vha->dpc_flags)) {
                                        qla8044_idc_lock(ha);
                                        qla8044_wr_direct(base_vha,
                                                QLA8044_CRB_DEV_STATE_INDEX,
                                                QLA8XXX_DEV_FAILED);
                                        qla8044_idc_unlock(ha);
                                        ql_log(ql_log_info, base_vha, 0x4004,
                                                "HW State: FAILED.\n");
                                        qla8044_device_state_handler(base_vha);
                                        continue;
                                }

                        } else {
                                if (test_and_clear_bit(ISP_UNRECOVERABLE,
                                        &base_vha->dpc_flags)) {
                                        qla82xx_idc_lock(ha);
                                        qla82xx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
                                                QLA8XXX_DEV_FAILED);
                                        qla82xx_idc_unlock(ha);
                                        ql_log(ql_log_info, base_vha, 0x0151,
                                                "HW State: FAILED.\n");
                                        qla82xx_device_state_handler(base_vha);
                                        continue;
                                }
                        }

                        if (test_and_clear_bit(FCOE_CTX_RESET_NEEDED,
                                &base_vha->dpc_flags)) {

                                ql_dbg(ql_dbg_dpc, base_vha, 0x4005,
                                    "FCoE context reset scheduled.\n");
                                if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
                                        &base_vha->dpc_flags))) {
                                        if (qla82xx_fcoe_ctx_reset(base_vha)) {
                                                /* FCoE-ctx reset failed.
                                                 * Escalate to chip-reset
                                                 */
                                                set_bit(ISP_ABORT_NEEDED,
                                                        &base_vha->dpc_flags);
                                        }
                                        clear_bit(ABORT_ISP_ACTIVE,
                                                &base_vha->dpc_flags);
                                }

                                ql_dbg(ql_dbg_dpc, base_vha, 0x4006,
                                    "FCoE context reset end.\n");
                        }
                } else if (IS_QLAFX00(ha)) {
                        if (test_and_clear_bit(ISP_UNRECOVERABLE,
                                &base_vha->dpc_flags)) {
                                ql_dbg(ql_dbg_dpc, base_vha, 0x4020,
                                    "Firmware Reset Recovery\n");
                                if (qlafx00_reset_initialize(base_vha)) {
                                        /* Failed. Abort isp later. */
                                        if (!test_bit(UNLOADING,
                                            &base_vha->dpc_flags)) {
                                                set_bit(ISP_UNRECOVERABLE,
                                                    &base_vha->dpc_flags);
                                                ql_dbg(ql_dbg_dpc, base_vha,
                                                    0x4021,
                                                    "Reset Recovery Failed\n");
                                        }
                                }
                        }

                        if (test_and_clear_bit(FX00_TARGET_SCAN,
                                &base_vha->dpc_flags)) {
                                ql_dbg(ql_dbg_dpc, base_vha, 0x4022,
                                    "ISPFx00 Target Scan scheduled\n");
                                if (qlafx00_rescan_isp(base_vha)) {
                                        if (!test_bit(UNLOADING,
                                            &base_vha->dpc_flags))
                                                set_bit(ISP_UNRECOVERABLE,
                                                    &base_vha->dpc_flags);
                                        ql_dbg(ql_dbg_dpc, base_vha, 0x401e,
                                            "ISPFx00 Target Scan Failed\n");
                                }
                                ql_dbg(ql_dbg_dpc, base_vha, 0x401f,
                                    "ISPFx00 Target Scan End\n");
                        }
                        if (test_and_clear_bit(FX00_HOST_INFO_RESEND,
                                &base_vha->dpc_flags)) {
                                ql_dbg(ql_dbg_dpc, base_vha, 0x4023,
                                    "ISPFx00 Host Info resend scheduled\n");
                                qlafx00_fx_disc(base_vha,
                                    &base_vha->hw->mr.fcport,
                                    FXDISC_REG_HOST_INFO);
                        }
                }

                if (test_and_clear_bit(DETECT_SFP_CHANGE,
                        &base_vha->dpc_flags) &&
                    !test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags)) {
                        qla24xx_detect_sfp(base_vha);

                        if (ha->flags.detected_lr_sfp !=
                            ha->flags.using_lr_setting)
                                set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
                }

                if (test_and_clear_bit
                    (ISP_ABORT_NEEDED, &base_vha->dpc_flags) &&
                    !test_bit(UNLOADING, &base_vha->dpc_flags)) {
                        bool do_reset = true;

                        switch (base_vha->qlini_mode) {
                        case QLA2XXX_INI_MODE_ENABLED:
                                break;
                        case QLA2XXX_INI_MODE_DISABLED:
                                if (!qla_tgt_mode_enabled(base_vha) &&
                                    !ha->flags.fw_started)
                                        do_reset = false;
                                break;
                        case QLA2XXX_INI_MODE_DUAL:
                                if (!qla_dual_mode_enabled(base_vha) &&
                                    !ha->flags.fw_started)
                                        do_reset = false;
                                break;
                        default:
                                break;
                        }

                        if (do_reset && !(test_and_set_bit(ABORT_ISP_ACTIVE,
                            &base_vha->dpc_flags))) {
                                ql_dbg(ql_dbg_dpc, base_vha, 0x4007,
                                    "ISP abort scheduled.\n");
                                if (ha->isp_ops->abort_isp(base_vha)) {
                                        /* failed. retry later */
                                        set_bit(ISP_ABORT_NEEDED,
                                            &base_vha->dpc_flags);
                                }
                                clear_bit(ABORT_ISP_ACTIVE,
                                                &base_vha->dpc_flags);
                                ql_dbg(ql_dbg_dpc, base_vha, 0x4008,
                                    "ISP abort end.\n");
                        }
                }

                if (test_and_clear_bit(FCPORT_UPDATE_NEEDED,
                    &base_vha->dpc_flags)) {
                        qla2x00_update_fcports(base_vha);
                }

                if (IS_QLAFX00(ha))
                        goto loop_resync_check;

                if (test_bit(ISP_QUIESCE_NEEDED, &base_vha->dpc_flags)) {
                        ql_dbg(ql_dbg_dpc, base_vha, 0x4009,
                            "Quiescence mode scheduled.\n");
                        if (IS_P3P_TYPE(ha)) {
                                if (IS_QLA82XX(ha))
                                        qla82xx_device_state_handler(base_vha);
                                if (IS_QLA8044(ha))
                                        qla8044_device_state_handler(base_vha);
                                clear_bit(ISP_QUIESCE_NEEDED,
                                    &base_vha->dpc_flags);
                                if (!ha->flags.quiesce_owner) {
                                        qla2x00_perform_loop_resync(base_vha);
                                        if (IS_QLA82XX(ha)) {
                                                qla82xx_idc_lock(ha);
                                                qla82xx_clear_qsnt_ready(
                                                    base_vha);
                                                qla82xx_idc_unlock(ha);
                                        } else if (IS_QLA8044(ha)) {
                                                qla8044_idc_lock(ha);
                                                qla8044_clear_qsnt_ready(
                                                    base_vha);
                                                qla8044_idc_unlock(ha);
                                        }
                                }
                        } else {
                                clear_bit(ISP_QUIESCE_NEEDED,
                                    &base_vha->dpc_flags);
                                qla2x00_quiesce_io(base_vha);
                        }
                        ql_dbg(ql_dbg_dpc, base_vha, 0x400a,
                            "Quiescence mode end.\n");
                }

                if (test_and_clear_bit(RESET_MARKER_NEEDED,
                                &base_vha->dpc_flags) &&
                    (!(test_and_set_bit(RESET_ACTIVE, &base_vha->dpc_flags)))) {

                        ql_dbg(ql_dbg_dpc, base_vha, 0x400b,
                            "Reset marker scheduled.\n");
                        qla2x00_rst_aen(base_vha);
                        clear_bit(RESET_ACTIVE, &base_vha->dpc_flags);
                        ql_dbg(ql_dbg_dpc, base_vha, 0x400c,
                            "Reset marker end.\n");
                }

                /* Retry each device up to login retry count */
                if (test_bit(RELOGIN_NEEDED, &base_vha->dpc_flags) &&
                    !test_bit(LOOP_RESYNC_NEEDED, &base_vha->dpc_flags) &&
                    atomic_read(&base_vha->loop_state) != LOOP_DOWN) {

                        if (!base_vha->relogin_jif ||
                            time_after_eq(jiffies, base_vha->relogin_jif)) {
                                base_vha->relogin_jif = jiffies + HZ;
                                clear_bit(RELOGIN_NEEDED, &base_vha->dpc_flags);

                                ql_dbg(ql_dbg_disc, base_vha, 0x400d,
                                    "Relogin scheduled.\n");
                                qla24xx_post_relogin_work(base_vha);
                        }
                }
loop_resync_check:
                if (test_and_clear_bit(LOOP_RESYNC_NEEDED,
                    &base_vha->dpc_flags)) {

                        ql_dbg(ql_dbg_dpc, base_vha, 0x400f,
                            "Loop resync scheduled.\n");

                        if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
                            &base_vha->dpc_flags))) {

                                qla2x00_loop_resync(base_vha);

                                clear_bit(LOOP_RESYNC_ACTIVE,
                                                &base_vha->dpc_flags);
                        }

                        ql_dbg(ql_dbg_dpc, base_vha, 0x4010,
                            "Loop resync end.\n");
                }

                if (IS_QLAFX00(ha))
                        goto intr_on_check;

                if (test_bit(NPIV_CONFIG_NEEDED, &base_vha->dpc_flags) &&
                    atomic_read(&base_vha->loop_state) == LOOP_READY) {
                        clear_bit(NPIV_CONFIG_NEEDED, &base_vha->dpc_flags);
                        qla2xxx_flash_npiv_conf(base_vha);
                }

intr_on_check:
                if (!ha->interrupts_on)
                        ha->isp_ops->enable_intrs(ha);

                if (test_and_clear_bit(BEACON_BLINK_NEEDED,
                                        &base_vha->dpc_flags)) {
                        if (ha->beacon_blink_led == 1)
                                ha->isp_ops->beacon_blink(base_vha);
                }

                /* qpair online check */
                if (test_and_clear_bit(QPAIR_ONLINE_CHECK_NEEDED,
                    &base_vha->dpc_flags)) {
                        if (ha->flags.eeh_busy ||
                            ha->flags.pci_channel_io_perm_failure)
                                online = 0;
                        else
                                online = 1;

                        mutex_lock(&ha->mq_lock);
                        list_for_each_entry(qpair, &base_vha->qp_list,
                            qp_list_elem)
                        qpair->online = online;
                        mutex_unlock(&ha->mq_lock);
                }

                if (test_and_clear_bit(SET_NVME_ZIO_THRESHOLD_NEEDED,
                    &base_vha->dpc_flags)) {
                        ql_log(ql_log_info, base_vha, 0xffffff,
                                "nvme: SET ZIO Activity exchange threshold to %d.\n",
                                                ha->nvme_last_rptd_aen);
                        if (qla27xx_set_zio_threshold(base_vha,
                            ha->nvme_last_rptd_aen)) {
                                ql_log(ql_log_info, base_vha, 0xffffff,
                                    "nvme: Unable to SET ZIO Activity exchange threshold to %d.\n",
                                    ha->nvme_last_rptd_aen);
                        }
                }

                if (test_and_clear_bit(SET_ZIO_THRESHOLD_NEEDED,
                    &base_vha->dpc_flags)) {
                        ql_log(ql_log_info, base_vha, 0xffffff,
                            "SET ZIO Activity exchange threshold to %d.\n",
                            ha->last_zio_threshold);
                        qla27xx_set_zio_threshold(base_vha,
                            ha->last_zio_threshold);
                }

                if (!IS_QLAFX00(ha))
                        qla2x00_do_dpc_all_vps(base_vha);

                if (test_and_clear_bit(N2N_LINK_RESET,
                        &base_vha->dpc_flags)) {
                        qla2x00_lip_reset(base_vha);
                }

                ha->dpc_active = 0;
end_loop:
                set_current_state(TASK_INTERRUPTIBLE);
        } /* End of while(1) */
        __set_current_state(TASK_RUNNING);

        ql_dbg(ql_dbg_dpc, base_vha, 0x4011,
            "DPC handler exiting.\n");

        /*
         * Make sure that nobody tries to wake us up again.
         */
        ha->dpc_active = 0;

        /* Cleanup any residual CTX SRBs. */
        qla2x00_abort_all_cmds(base_vha, DID_NO_CONNECT << 16);

        return 0;
}

void
qla2xxx_wake_dpc(struct scsi_qla_host *vha)
{
        struct qla_hw_data *ha = vha->hw;
        struct task_struct *t = ha->dpc_thread;

        if (!test_bit(UNLOADING, &vha->dpc_flags) && t)
                wake_up_process(t);
}

/*
*  qla2x00_rst_aen
*      Processes asynchronous reset.
*
* Input:
*      ha  = adapter block pointer.
*/
static void
qla2x00_rst_aen(scsi_qla_host_t *vha)
{
        if (vha->flags.online && !vha->flags.reset_active &&
            !atomic_read(&vha->loop_down_timer) &&
            !(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))) {
                do {
                        clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);

                        /*
                         * Issue marker command only when we are going to start
                         * the I/O.
                         */
                        vha->marker_needed = 1;
                } while (!atomic_read(&vha->loop_down_timer) &&
                    (test_bit(RESET_MARKER_NEEDED, &vha->dpc_flags)));
        }
}

/**************************************************************************
*   qla2x00_timer
*
* Description:
*   One second timer
*
* Context: Interrupt
***************************************************************************/
void
qla2x00_timer(struct timer_list *t)
{
        scsi_qla_host_t *vha = from_timer(vha, t, timer);
        unsigned long   cpu_flags = 0;
        int             start_dpc = 0;
        int             index;
        srb_t           *sp;
        uint16_t        w;
        struct qla_hw_data *ha = vha->hw;
        struct req_que *req;

        if (ha->flags.eeh_busy) {
                ql_dbg(ql_dbg_timer, vha, 0x6000,
                    "EEH = %d, restarting timer.\n",
                    ha->flags.eeh_busy);
                qla2x00_restart_timer(vha, WATCH_INTERVAL);
                return;
        }

        /*
         * Hardware read to raise pending EEH errors during mailbox waits. If
         * the read returns -1 then disable the board.
         */
        if (!pci_channel_offline(ha->pdev)) {
                pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
                qla2x00_check_reg16_for_disconnect(vha, w);
        }

        /* Make sure qla82xx_watchdog is run only for physical port */
        if (!vha->vp_idx && IS_P3P_TYPE(ha)) {
                if (test_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags))
                        start_dpc++;
                if (IS_QLA82XX(ha))
                        qla82xx_watchdog(vha);
                else if (IS_QLA8044(ha))
                        qla8044_watchdog(vha);
        }

        if (!vha->vp_idx && IS_QLAFX00(ha))
                qlafx00_timer_routine(vha);

        /* Loop down handler. */
        if (atomic_read(&vha->loop_down_timer) > 0 &&
            !(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) &&
            !(test_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags))
                && vha->flags.online) {

                if (atomic_read(&vha->loop_down_timer) ==
                    vha->loop_down_abort_time) {

                        ql_log(ql_log_info, vha, 0x6008,
                            "Loop down - aborting the queues before time expires.\n");

                        if (!IS_QLA2100(ha) && vha->link_down_timeout)
                                atomic_set(&vha->loop_state, LOOP_DEAD);

                        /*
                         * Schedule an ISP abort to return any FCP2-device
                         * commands.
                         */
                        /* NPIV - scan physical port only */
                        if (!vha->vp_idx) {
                                spin_lock_irqsave(&ha->hardware_lock,
                                    cpu_flags);
                                req = ha->req_q_map[0];
                                for (index = 1;
                                    index < req->num_outstanding_cmds;
                                    index++) {
                                        fc_port_t *sfcp;

                                        sp = req->outstanding_cmds[index];
                                        if (!sp)
                                                continue;
                                        if (sp->cmd_type != TYPE_SRB)
                                                continue;
                                        if (sp->type != SRB_SCSI_CMD)
                                                continue;
                                        sfcp = sp->fcport;
                                        if (!(sfcp->flags & FCF_FCP2_DEVICE))
                                                continue;

                                        if (IS_QLA82XX(ha))
                                                set_bit(FCOE_CTX_RESET_NEEDED,
                                                        &vha->dpc_flags);
                                        else
                                                set_bit(ISP_ABORT_NEEDED,
                                                        &vha->dpc_flags);
                                        break;
                                }
                                spin_unlock_irqrestore(&ha->hardware_lock,
                                                                cpu_flags);
                        }
                        start_dpc++;
                }

                /* if the loop has been down for 4 minutes, reinit adapter */
                if (atomic_dec_and_test(&vha->loop_down_timer) != 0) {
                        if (!(vha->device_flags & DFLG_NO_CABLE)) {
                                ql_log(ql_log_warn, vha, 0x6009,
                                    "Loop down - aborting ISP.\n");

                                if (IS_QLA82XX(ha))
                                        set_bit(FCOE_CTX_RESET_NEEDED,
                                                &vha->dpc_flags);
                                else
                                        set_bit(ISP_ABORT_NEEDED,
                                                &vha->dpc_flags);
                        }
                }
                ql_dbg(ql_dbg_timer, vha, 0x600a,
                    "Loop down - seconds remaining %d.\n",
                    atomic_read(&vha->loop_down_timer));
        }
        /* Check if beacon LED needs to be blinked for physical host only */
        if (!vha->vp_idx && (ha->beacon_blink_led == 1)) {
                /* There is no beacon_blink function for ISP82xx */
                if (!IS_P3P_TYPE(ha)) {
                        set_bit(BEACON_BLINK_NEEDED, &vha->dpc_flags);
                        start_dpc++;
                }
        }

        /* Process any deferred work. */
        if (!list_empty(&vha->work_list)) {
                unsigned long flags;
                bool q = false;

                spin_lock_irqsave(&vha->work_lock, flags);
                if (!test_and_set_bit(IOCB_WORK_ACTIVE, &vha->dpc_flags))
                        q = true;
                spin_unlock_irqrestore(&vha->work_lock, flags);
                if (q)
                        queue_work(vha->hw->wq, &vha->iocb_work);
        }

        /*
         * FC-NVME
         * see if the active AEN count has changed from what was last reported.
         */
        if (!vha->vp_idx && (atomic_read(&ha->nvme_active_aen_cnt) !=
            ha->nvme_last_rptd_aen) && ha->zio_mode == QLA_ZIO_MODE_6) {
                ql_log(ql_log_info, vha, 0x3002,
                    "nvme: Sched: Set ZIO exchange threshold to %d.\n",
                    ha->nvme_last_rptd_aen);
                ha->nvme_last_rptd_aen = atomic_read(&ha->nvme_active_aen_cnt);
                set_bit(SET_NVME_ZIO_THRESHOLD_NEEDED, &vha->dpc_flags);
                start_dpc++;
        }

        if (!vha->vp_idx &&
            (atomic_read(&ha->zio_threshold) != ha->last_zio_threshold) &&
            (ha->zio_mode == QLA_ZIO_MODE_6) &&
            (IS_QLA83XX(ha) || IS_QLA27XX(ha))) {
                ql_log(ql_log_info, vha, 0x3002,
                    "Sched: Set ZIO exchange threshold to %d.\n",
                    ha->last_zio_threshold);
                ha->last_zio_threshold = atomic_read(&ha->zio_threshold);
                set_bit(SET_ZIO_THRESHOLD_NEEDED, &vha->dpc_flags);
                start_dpc++;
        }

        /* Schedule the DPC routine if needed */
        if ((test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags) ||
            test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) ||
            test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags) ||
            start_dpc ||
            test_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) ||
            test_bit(BEACON_BLINK_NEEDED, &vha->dpc_flags) ||
            test_bit(ISP_UNRECOVERABLE, &vha->dpc_flags) ||
            test_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags) ||
            test_bit(VP_DPC_NEEDED, &vha->dpc_flags) ||
            test_bit(RELOGIN_NEEDED, &vha->dpc_flags))) {
                ql_dbg(ql_dbg_timer, vha, 0x600b,
                    "isp_abort_needed=%d loop_resync_needed=%d "
                    "fcport_update_needed=%d start_dpc=%d "
                    "reset_marker_needed=%d",
                    test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags),
                    test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags),
                    test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags),
                    start_dpc,
                    test_bit(RESET_MARKER_NEEDED, &vha->dpc_flags));
                ql_dbg(ql_dbg_timer, vha, 0x600c,
                    "beacon_blink_needed=%d isp_unrecoverable=%d "
                    "fcoe_ctx_reset_needed=%d vp_dpc_needed=%d "
                    "relogin_needed=%d.\n",
                    test_bit(BEACON_BLINK_NEEDED, &vha->dpc_flags),
                    test_bit(ISP_UNRECOVERABLE, &vha->dpc_flags),
                    test_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags),
                    test_bit(VP_DPC_NEEDED, &vha->dpc_flags),
                    test_bit(RELOGIN_NEEDED, &vha->dpc_flags));
                qla2xxx_wake_dpc(vha);
        }

        qla2x00_restart_timer(vha, WATCH_INTERVAL);
}

/* Firmware interface routines. */

#define FW_BLOBS        11
#define FW_ISP21XX      0
#define FW_ISP22XX      1
#define FW_ISP2300      2
#define FW_ISP2322      3
#define FW_ISP24XX      4
#define FW_ISP25XX      5
#define FW_ISP81XX      6
#define FW_ISP82XX      7
#define FW_ISP2031      8
#define FW_ISP8031      9
#define FW_ISP27XX      10

#define FW_FILE_ISP21XX "ql2100_fw.bin"
#define FW_FILE_ISP22XX "ql2200_fw.bin"
#define FW_FILE_ISP2300 "ql2300_fw.bin"
#define FW_FILE_ISP2322 "ql2322_fw.bin"
#define FW_FILE_ISP24XX "ql2400_fw.bin"
#define FW_FILE_ISP25XX "ql2500_fw.bin"
#define FW_FILE_ISP81XX "ql8100_fw.bin"
#define FW_FILE_ISP82XX "ql8200_fw.bin"
#define FW_FILE_ISP2031 "ql2600_fw.bin"
#define FW_FILE_ISP8031 "ql8300_fw.bin"
#define FW_FILE_ISP27XX "ql2700_fw.bin"


static DEFINE_MUTEX(qla_fw_lock);

static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
        { .name = FW_FILE_ISP21XX, .segs = { 0x1000, 0 }, },
        { .name = FW_FILE_ISP22XX, .segs = { 0x1000, 0 }, },
        { .name = FW_FILE_ISP2300, .segs = { 0x800, 0 }, },
        { .name = FW_FILE_ISP2322, .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
        { .name = FW_FILE_ISP24XX, },
        { .name = FW_FILE_ISP25XX, },
        { .name = FW_FILE_ISP81XX, },
        { .name = FW_FILE_ISP82XX, },
        { .name = FW_FILE_ISP2031, },
        { .name = FW_FILE_ISP8031, },
        { .name = FW_FILE_ISP27XX, },
};

struct fw_blob *
qla2x00_request_firmware(scsi_qla_host_t *vha)
{
        struct qla_hw_data *ha = vha->hw;
        struct fw_blob *blob;

        if (IS_QLA2100(ha)) {
                blob = &qla_fw_blobs[FW_ISP21XX];
        } else if (IS_QLA2200(ha)) {
                blob = &qla_fw_blobs[FW_ISP22XX];
        } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
                blob = &qla_fw_blobs[FW_ISP2300];
        } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
                blob = &qla_fw_blobs[FW_ISP2322];
        } else if (IS_QLA24XX_TYPE(ha)) {
                blob = &qla_fw_blobs[FW_ISP24XX];
        } else if (IS_QLA25XX(ha)) {
                blob = &qla_fw_blobs[FW_ISP25XX];
        } else if (IS_QLA81XX(ha)) {
                blob = &qla_fw_blobs[FW_ISP81XX];
        } else if (IS_QLA82XX(ha)) {
                blob = &qla_fw_blobs[FW_ISP82XX];
        } else if (IS_QLA2031(ha)) {
                blob = &qla_fw_blobs[FW_ISP2031];
        } else if (IS_QLA8031(ha)) {
                blob = &qla_fw_blobs[FW_ISP8031];
        } else if (IS_QLA27XX(ha)) {
                blob = &qla_fw_blobs[FW_ISP27XX];
        } else {
                return NULL;
        }

        mutex_lock(&qla_fw_lock);
        if (blob->fw)
                goto out;

        if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
                ql_log(ql_log_warn, vha, 0x0063,
                    "Failed to load firmware image (%s).\n", blob->name);
                blob->fw = NULL;
                blob = NULL;
                goto out;
        }

out:
        mutex_unlock(&qla_fw_lock);
        return blob;
}

static void
qla2x00_release_firmware(void)
{
        int idx;

        mutex_lock(&qla_fw_lock);
        for (idx = 0; idx < FW_BLOBS; idx++)
                release_firmware(qla_fw_blobs[idx].fw);
        mutex_unlock(&qla_fw_lock);
}

static pci_ers_result_t
qla2xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
{
        scsi_qla_host_t *vha = pci_get_drvdata(pdev);
        struct qla_hw_data *ha = vha->hw;

        ql_dbg(ql_dbg_aer, vha, 0x9000,
            "PCI error detected, state %x.\n", state);

        if (!atomic_read(&pdev->enable_cnt)) {
                ql_log(ql_log_info, vha, 0xffff,
                        "PCI device is disabled,state %x\n", state);
                return PCI_ERS_RESULT_NEED_RESET;
        }

        switch (state) {
        case pci_channel_io_normal:
                ha->flags.eeh_busy = 0;
                if (ql2xmqsupport || ql2xnvmeenable) {
                        set_bit(QPAIR_ONLINE_CHECK_NEEDED, &vha->dpc_flags);
                        qla2xxx_wake_dpc(vha);
                }
                return PCI_ERS_RESULT_CAN_RECOVER;
        case pci_channel_io_frozen:
                ha->flags.eeh_busy = 1;
                /* For ISP82XX complete any pending mailbox cmd */
                if (IS_QLA82XX(ha)) {
                        ha->flags.isp82xx_fw_hung = 1;
                        ql_dbg(ql_dbg_aer, vha, 0x9001, "Pci channel io frozen\n");
                        qla82xx_clear_pending_mbx(vha);
                }
                qla2x00_free_irqs(vha);
                pci_disable_device(pdev);
                /* Return back all IOs */
                qla2x00_abort_all_cmds(vha, DID_RESET << 16);
                if (ql2xmqsupport || ql2xnvmeenable) {
                        set_bit(QPAIR_ONLINE_CHECK_NEEDED, &vha->dpc_flags);
                        qla2xxx_wake_dpc(vha);
                }
                return PCI_ERS_RESULT_NEED_RESET;
        case pci_channel_io_perm_failure:
                ha->flags.pci_channel_io_perm_failure = 1;
                qla2x00_abort_all_cmds(vha, DID_NO_CONNECT << 16);
                if (ql2xmqsupport || ql2xnvmeenable) {
                        set_bit(QPAIR_ONLINE_CHECK_NEEDED, &vha->dpc_flags);
                        qla2xxx_wake_dpc(vha);
                }
                return PCI_ERS_RESULT_DISCONNECT;
        }
        return PCI_ERS_RESULT_NEED_RESET;
}

static pci_ers_result_t
qla2xxx_pci_mmio_enabled(struct pci_dev *pdev)
{
        int risc_paused = 0;
        uint32_t stat;
        unsigned long flags;
        scsi_qla_host_t *base_vha = pci_get_drvdata(pdev);
        struct qla_hw_data *ha = base_vha->hw;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
        struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;

        if (IS_QLA82XX(ha))
                return PCI_ERS_RESULT_RECOVERED;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        if (IS_QLA2100(ha) || IS_QLA2200(ha)){
                stat = RD_REG_DWORD(&reg->hccr);
                if (stat & HCCR_RISC_PAUSE)
                        risc_paused = 1;
        } else if (IS_QLA23XX(ha)) {
                stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
                if (stat & HSR_RISC_PAUSED)
                        risc_paused = 1;
        } else if (IS_FWI2_CAPABLE(ha)) {
                stat = RD_REG_DWORD(&reg24->host_status);
                if (stat & HSRX_RISC_PAUSED)
                        risc_paused = 1;
        }
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        if (risc_paused) {
                ql_log(ql_log_info, base_vha, 0x9003,
                    "RISC paused -- mmio_enabled, Dumping firmware.\n");
                ha->isp_ops->fw_dump(base_vha, 0);

                return PCI_ERS_RESULT_NEED_RESET;
        } else
                return PCI_ERS_RESULT_RECOVERED;
}

static uint32_t
qla82xx_error_recovery(scsi_qla_host_t *base_vha)
{
        uint32_t rval = QLA_FUNCTION_FAILED;
        uint32_t drv_active = 0;
        struct qla_hw_data *ha = base_vha->hw;
        int fn;
        struct pci_dev *other_pdev = NULL;

        ql_dbg(ql_dbg_aer, base_vha, 0x9006,
            "Entered %s.\n", __func__);

        set_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);

        if (base_vha->flags.online) {
                /* Abort all outstanding commands,
                 * so as to be requeued later */
                qla2x00_abort_isp_cleanup(base_vha);
        }


        fn = PCI_FUNC(ha->pdev->devfn);
        while (fn > 0) {
                fn--;
                ql_dbg(ql_dbg_aer, base_vha, 0x9007,
                    "Finding pci device at function = 0x%x.\n", fn);
                other_pdev =
                    pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
                    ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
                    fn));

                if (!other_pdev)
                        continue;
                if (atomic_read(&other_pdev->enable_cnt)) {
                        ql_dbg(ql_dbg_aer, base_vha, 0x9008,
                            "Found PCI func available and enable at 0x%x.\n",
                            fn);
                        pci_dev_put(other_pdev);
                        break;
                }
                pci_dev_put(other_pdev);
        }

        if (!fn) {
                /* Reset owner */
                ql_dbg(ql_dbg_aer, base_vha, 0x9009,
                    "This devfn is reset owner = 0x%x.\n",
                    ha->pdev->devfn);
                qla82xx_idc_lock(ha);

                qla82xx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
                    QLA8XXX_DEV_INITIALIZING);

                qla82xx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION,
                    QLA82XX_IDC_VERSION);

                drv_active = qla82xx_rd_32(ha, QLA82XX_CRB_DRV_ACTIVE);
                ql_dbg(ql_dbg_aer, base_vha, 0x900a,
                    "drv_active = 0x%x.\n", drv_active);

                qla82xx_idc_unlock(ha);
                /* Reset if device is not already reset
                 * drv_active would be 0 if a reset has already been done
                 */
                if (drv_active)
                        rval = qla82xx_start_firmware(base_vha);
                else
                        rval = QLA_SUCCESS;
                qla82xx_idc_lock(ha);

                if (rval != QLA_SUCCESS) {
                        ql_log(ql_log_info, base_vha, 0x900b,
                            "HW State: FAILED.\n");
                        qla82xx_clear_drv_active(ha);
                        qla82xx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
                            QLA8XXX_DEV_FAILED);
                } else {
                        ql_log(ql_log_info, base_vha, 0x900c,
                            "HW State: READY.\n");
                        qla82xx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
                            QLA8XXX_DEV_READY);
                        qla82xx_idc_unlock(ha);
                        ha->flags.isp82xx_fw_hung = 0;
                        rval = qla82xx_restart_isp(base_vha);
                        qla82xx_idc_lock(ha);
                        /* Clear driver state register */
                        qla82xx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0);
                        qla82xx_set_drv_active(base_vha);
                }
                qla82xx_idc_unlock(ha);
        } else {
                ql_dbg(ql_dbg_aer, base_vha, 0x900d,
                    "This devfn is not reset owner = 0x%x.\n",
                    ha->pdev->devfn);
                if ((qla82xx_rd_32(ha, QLA82XX_CRB_DEV_STATE) ==
                    QLA8XXX_DEV_READY)) {
                        ha->flags.isp82xx_fw_hung = 0;
                        rval = qla82xx_restart_isp(base_vha);
                        qla82xx_idc_lock(ha);
                        qla82xx_set_drv_active(base_vha);
                        qla82xx_idc_unlock(ha);
                }
        }
        clear_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);

        return rval;
}

static pci_ers_result_t
qla2xxx_pci_slot_reset(struct pci_dev *pdev)
{
        pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
        scsi_qla_host_t *base_vha = pci_get_drvdata(pdev);
        struct qla_hw_data *ha = base_vha->hw;
        struct rsp_que *rsp;
        int rc, retries = 10;

        ql_dbg(ql_dbg_aer, base_vha, 0x9004,
            "Slot Reset.\n");

        /* Workaround: qla2xxx driver which access hardware earlier
         * needs error state to be pci_channel_io_online.
         * Otherwise mailbox command timesout.
         */
        pdev->error_state = pci_channel_io_normal;

        pci_restore_state(pdev);

        /* pci_restore_state() clears the saved_state flag of the device
         * save restored state which resets saved_state flag
         */
        pci_save_state(pdev);

        if (ha->mem_only)
                rc = pci_enable_device_mem(pdev);
        else
                rc = pci_enable_device(pdev);

        if (rc) {
                ql_log(ql_log_warn, base_vha, 0x9005,
                    "Can't re-enable PCI device after reset.\n");
                goto exit_slot_reset;
        }

        rsp = ha->rsp_q_map[0];
        if (qla2x00_request_irqs(ha, rsp))
                goto exit_slot_reset;

        if (ha->isp_ops->pci_config(base_vha))
                goto exit_slot_reset;

        if (IS_QLA82XX(ha)) {
                if (qla82xx_error_recovery(base_vha) == QLA_SUCCESS) {
                        ret = PCI_ERS_RESULT_RECOVERED;
                        goto exit_slot_reset;
                } else
                        goto exit_slot_reset;
        }

        while (ha->flags.mbox_busy && retries--)
                msleep(1000);

        set_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
        if (ha->isp_ops->abort_isp(base_vha) == QLA_SUCCESS)
                ret =  PCI_ERS_RESULT_RECOVERED;
        clear_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);


exit_slot_reset:
        ql_dbg(ql_dbg_aer, base_vha, 0x900e,
            "slot_reset return %x.\n", ret);

        return ret;
}

static void
qla2xxx_pci_resume(struct pci_dev *pdev)
{
        scsi_qla_host_t *base_vha = pci_get_drvdata(pdev);
        struct qla_hw_data *ha = base_vha->hw;
        int ret;

        ql_dbg(ql_dbg_aer, base_vha, 0x900f,
            "pci_resume.\n");

        ret = qla2x00_wait_for_hba_online(base_vha);
        if (ret != QLA_SUCCESS) {
                ql_log(ql_log_fatal, base_vha, 0x9002,
                    "The device failed to resume I/O from slot/link_reset.\n");
        }

        ha->flags.eeh_busy = 0;
}

static int qla2xxx_map_queues(struct Scsi_Host *shost)
{
        int rc;
        scsi_qla_host_t *vha = (scsi_qla_host_t *)shost->hostdata;

        if (USER_CTRL_IRQ(vha->hw))
                rc = blk_mq_map_queues(&shost->tag_set);
        else
                rc = blk_mq_pci_map_queues(&shost->tag_set, vha->hw->pdev, 0);
        return rc;
}

static const struct pci_error_handlers qla2xxx_err_handler = {
        .error_detected = qla2xxx_pci_error_detected,
        .mmio_enabled = qla2xxx_pci_mmio_enabled,
        .slot_reset = qla2xxx_pci_slot_reset,
        .resume = qla2xxx_pci_resume,
};

static struct pci_device_id qla2xxx_pci_tbl[] = {
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8432) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2532) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2031) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8001) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8021) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8031) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISPF001) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8044) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2071) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2271) },
        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2261) },
        { 0 },
};
MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);

static struct pci_driver qla2xxx_pci_driver = {
        .name           = QLA2XXX_DRIVER_NAME,
        .driver         = {
                .owner          = THIS_MODULE,
        },
        .id_table       = qla2xxx_pci_tbl,
        .probe          = qla2x00_probe_one,
        .remove         = qla2x00_remove_one,
        .shutdown       = qla2x00_shutdown,
        .err_handler    = &qla2xxx_err_handler,
};

static const struct file_operations apidev_fops = {
        .owner = THIS_MODULE,
        .llseek = noop_llseek,
};

/**
 * qla2x00_module_init - Module initialization.
 **/
static int __init
qla2x00_module_init(void)
{
        int ret = 0;

        /* Allocate cache for SRBs. */
        srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
            SLAB_HWCACHE_ALIGN, NULL);
        if (srb_cachep == NULL) {
                ql_log(ql_log_fatal, NULL, 0x0001,
                    "Unable to allocate SRB cache...Failing load!.\n");
                return -ENOMEM;
        }

        /* Initialize target kmem_cache and mem_pools */
        ret = qlt_init();
        if (ret < 0) {
                kmem_cache_destroy(srb_cachep);
                return ret;
        } else if (ret > 0) {
                /*
                 * If initiator mode is explictly disabled by qlt_init(),
                 * prevent scsi_transport_fc.c:fc_scsi_scan_rport() from
                 * performing scsi_scan_target() during LOOP UP event.
                 */
                qla2xxx_transport_functions.disable_target_scan = 1;
                qla2xxx_transport_vport_functions.disable_target_scan = 1;
        }

        /* Derive version string. */
        strcpy(qla2x00_version_str, QLA2XXX_VERSION);
        if (ql2xextended_error_logging)
                strcat(qla2x00_version_str, "-debug");
        if (ql2xextended_error_logging == 1)
                ql2xextended_error_logging = QL_DBG_DEFAULT1_MASK;

        if (ql2x_ini_mode == QLA2XXX_INI_MODE_DUAL)
                qla_insert_tgt_attrs();

        qla2xxx_transport_template =
            fc_attach_transport(&qla2xxx_transport_functions);
        if (!qla2xxx_transport_template) {
                kmem_cache_destroy(srb_cachep);
                ql_log(ql_log_fatal, NULL, 0x0002,
                    "fc_attach_transport failed...Failing load!.\n");
                qlt_exit();
                return -ENODEV;
        }

        apidev_major = register_chrdev(0, QLA2XXX_APIDEV, &apidev_fops);
        if (apidev_major < 0) {
                ql_log(ql_log_fatal, NULL, 0x0003,
                    "Unable to register char device %s.\n", QLA2XXX_APIDEV);
        }

        qla2xxx_transport_vport_template =
            fc_attach_transport(&qla2xxx_transport_vport_functions);
        if (!qla2xxx_transport_vport_template) {
                kmem_cache_destroy(srb_cachep);
                qlt_exit();
                fc_release_transport(qla2xxx_transport_template);
                ql_log(ql_log_fatal, NULL, 0x0004,
                    "fc_attach_transport vport failed...Failing load!.\n");
                return -ENODEV;
        }
        ql_log(ql_log_info, NULL, 0x0005,
            "QLogic Fibre Channel HBA Driver: %s.\n",
            qla2x00_version_str);
        ret = pci_register_driver(&qla2xxx_pci_driver);
        if (ret) {
                kmem_cache_destroy(srb_cachep);
                qlt_exit();
                fc_release_transport(qla2xxx_transport_template);
                fc_release_transport(qla2xxx_transport_vport_template);
                ql_log(ql_log_fatal, NULL, 0x0006,
                    "pci_register_driver failed...ret=%d Failing load!.\n",
                    ret);
        }
        return ret;
}

/**
 * qla2x00_module_exit - Module cleanup.
 **/
static void __exit
qla2x00_module_exit(void)
{
        unregister_chrdev(apidev_major, QLA2XXX_APIDEV);
        pci_unregister_driver(&qla2xxx_pci_driver);
        qla2x00_release_firmware();
        kmem_cache_destroy(srb_cachep);
        qlt_exit();
        if (ctx_cachep)
                kmem_cache_destroy(ctx_cachep);
        fc_release_transport(qla2xxx_transport_template);
        fc_release_transport(qla2xxx_transport_vport_template);
}

module_init(qla2x00_module_init);
module_exit(qla2x00_module_exit);

MODULE_AUTHOR("QLogic Corporation");
MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(QLA2XXX_VERSION);
MODULE_FIRMWARE(FW_FILE_ISP21XX);
MODULE_FIRMWARE(FW_FILE_ISP22XX);
MODULE_FIRMWARE(FW_FILE_ISP2300);
MODULE_FIRMWARE(FW_FILE_ISP2322);
MODULE_FIRMWARE(FW_FILE_ISP24XX);
MODULE_FIRMWARE(FW_FILE_ISP25XX);