bfa_svc.c

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/*
 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
 * All rights reserved
 * www.brocade.com
 *
 * Linux driver for Brocade Fibre Channel Host Bus Adapter.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License (GPL) Version 2 as
 * published by the Free Software Foundation
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

#include "bfad_drv.h"
#include "bfad_im.h"
#include "bfa_plog.h"
#include "bfa_cs.h"
#include "bfa_modules.h"

BFA_TRC_FILE(HAL, FCXP);
BFA_MODULE(fcdiag);
BFA_MODULE(fcxp);
BFA_MODULE(sgpg);
BFA_MODULE(lps);
BFA_MODULE(fcport);
BFA_MODULE(rport);
BFA_MODULE(uf);

/*
 * LPS related definitions
 */
#define BFA_LPS_MIN_LPORTS      (1)
#define BFA_LPS_MAX_LPORTS      (256)

/*
 * Maximum Vports supported per physical port or vf.
 */
#define BFA_LPS_MAX_VPORTS_SUPP_CB  255
#define BFA_LPS_MAX_VPORTS_SUPP_CT  190


/*
 * FC PORT related definitions
 */
/*
 * The port is considered disabled if corresponding physical port or IOC are
 * disabled explicitly
 */
#define BFA_PORT_IS_DISABLED(bfa) \
    ((bfa_fcport_is_disabled(bfa) == BFA_TRUE) || \
    (bfa_ioc_is_disabled(&bfa->ioc) == BFA_TRUE))

/*
 * BFA port state machine events
 */
enum bfa_fcport_sm_event {
    BFA_FCPORT_SM_START = 1,    /*  start port state machine    */
    BFA_FCPORT_SM_STOP  = 2,    /*  stop port state machine */
    BFA_FCPORT_SM_ENABLE    = 3,    /*  enable port     */
    BFA_FCPORT_SM_DISABLE   = 4,    /*  disable port state machine */
    BFA_FCPORT_SM_FWRSP = 5,    /*  firmware enable/disable rsp */
    BFA_FCPORT_SM_LINKUP    = 6,    /*  firmware linkup event   */
    BFA_FCPORT_SM_LINKDOWN  = 7,    /*  firmware linkup down    */
    BFA_FCPORT_SM_QRESUME   = 8,    /*  CQ space available  */
    BFA_FCPORT_SM_HWFAIL    = 9,    /*  IOC h/w failure     */
    BFA_FCPORT_SM_DPORTENABLE = 10, /*  enable dport      */
    BFA_FCPORT_SM_DPORTDISABLE = 11,/*  disable dport     */
    BFA_FCPORT_SM_FAA_MISCONFIG = 12,   /* FAA misconfiguratin */
};

/*
 * BFA port link notification state machine events
 */

enum bfa_fcport_ln_sm_event {
    BFA_FCPORT_LN_SM_LINKUP     = 1,    /*  linkup event    */
    BFA_FCPORT_LN_SM_LINKDOWN   = 2,    /*  linkdown event  */
    BFA_FCPORT_LN_SM_NOTIFICATION   = 3 /*  done notification   */
};

/*
 * RPORT related definitions
 */
#define bfa_rport_offline_cb(__rp) do {                 \
    if ((__rp)->bfa->fcs)                       \
        bfa_cb_rport_offline((__rp)->rport_drv);      \
    else {                              \
        bfa_cb_queue((__rp)->bfa, &(__rp)->hcb_qe,      \
                __bfa_cb_rport_offline, (__rp));      \
    }                               \
} while (0)

#define bfa_rport_online_cb(__rp) do {                  \
    if ((__rp)->bfa->fcs)                       \
        bfa_cb_rport_online((__rp)->rport_drv);      \
    else {                              \
        bfa_cb_queue((__rp)->bfa, &(__rp)->hcb_qe,      \
                  __bfa_cb_rport_online, (__rp));      \
        }                           \
} while (0)

/*
 * forward declarations FCXP related functions
 */
static void __bfa_fcxp_send_cbfn(void *cbarg, bfa_boolean_t complete);
static void hal_fcxp_rx_plog(struct bfa_s *bfa, struct bfa_fcxp_s *fcxp,
                struct bfi_fcxp_send_rsp_s *fcxp_rsp);
static void hal_fcxp_tx_plog(struct bfa_s *bfa, u32 reqlen,
                struct bfa_fcxp_s *fcxp, struct fchs_s *fchs);
static void bfa_fcxp_qresume(void *cbarg);
static void bfa_fcxp_queue(struct bfa_fcxp_s *fcxp,
                struct bfi_fcxp_send_req_s *send_req);

/*
 * forward declarations for LPS functions
 */
static void bfa_lps_meminfo(struct bfa_iocfc_cfg_s *cfg,
        struct bfa_meminfo_s *minfo, struct bfa_s *bfa);
static void bfa_lps_attach(struct bfa_s *bfa, void *bfad,
                struct bfa_iocfc_cfg_s *cfg,
                struct bfa_pcidev_s *pcidev);
static void bfa_lps_detach(struct bfa_s *bfa);
static void bfa_lps_start(struct bfa_s *bfa);
static void bfa_lps_stop(struct bfa_s *bfa);
static void bfa_lps_iocdisable(struct bfa_s *bfa);
static void bfa_lps_login_rsp(struct bfa_s *bfa,
                struct bfi_lps_login_rsp_s *rsp);
static void bfa_lps_no_res(struct bfa_lps_s *first_lps, u8 count);
static void bfa_lps_logout_rsp(struct bfa_s *bfa,
                struct bfi_lps_logout_rsp_s *rsp);
static void bfa_lps_reqq_resume(void *lps_arg);
static void bfa_lps_free(struct bfa_lps_s *lps);
static void bfa_lps_send_login(struct bfa_lps_s *lps);
static void bfa_lps_send_logout(struct bfa_lps_s *lps);
static void bfa_lps_send_set_n2n_pid(struct bfa_lps_s *lps);
static void bfa_lps_login_comp(struct bfa_lps_s *lps);
static void bfa_lps_logout_comp(struct bfa_lps_s *lps);
static void bfa_lps_cvl_event(struct bfa_lps_s *lps);

/*
 * forward declaration for LPS state machine
 */
static void bfa_lps_sm_init(struct bfa_lps_s *lps, enum bfa_lps_event event);
static void bfa_lps_sm_login(struct bfa_lps_s *lps, enum bfa_lps_event event);
static void bfa_lps_sm_loginwait(struct bfa_lps_s *lps, enum bfa_lps_event
                    event);
static void bfa_lps_sm_online(struct bfa_lps_s *lps, enum bfa_lps_event event);
static void bfa_lps_sm_online_n2n_pid_wait(struct bfa_lps_s *lps,
                    enum bfa_lps_event event);
static void bfa_lps_sm_logout(struct bfa_lps_s *lps, enum bfa_lps_event event);
static void bfa_lps_sm_logowait(struct bfa_lps_s *lps, enum bfa_lps_event
                    event);

/*
 * forward declaration for FC Port functions
 */
static bfa_boolean_t bfa_fcport_send_enable(struct bfa_fcport_s *fcport);
static bfa_boolean_t bfa_fcport_send_disable(struct bfa_fcport_s *fcport);
static void bfa_fcport_update_linkinfo(struct bfa_fcport_s *fcport);
static void bfa_fcport_reset_linkinfo(struct bfa_fcport_s *fcport);
static void bfa_fcport_set_wwns(struct bfa_fcport_s *fcport);
static void __bfa_cb_fcport_event(void *cbarg, bfa_boolean_t complete);
static void bfa_fcport_scn(struct bfa_fcport_s *fcport,
            enum bfa_port_linkstate event, bfa_boolean_t trunk);
static void bfa_fcport_queue_cb(struct bfa_fcport_ln_s *ln,
                enum bfa_port_linkstate event);
static void __bfa_cb_fcport_stats_clr(void *cbarg, bfa_boolean_t complete);
static void bfa_fcport_stats_get_timeout(void *cbarg);
static void bfa_fcport_stats_clr_timeout(void *cbarg);
static void bfa_trunk_iocdisable(struct bfa_s *bfa);

/*
 * forward declaration for FC PORT state machine
 */
static void     bfa_fcport_sm_uninit(struct bfa_fcport_s *fcport,
                    enum bfa_fcport_sm_event event);
static void     bfa_fcport_sm_enabling_qwait(struct bfa_fcport_s *fcport,
                    enum bfa_fcport_sm_event event);
static void     bfa_fcport_sm_enabling(struct bfa_fcport_s *fcport,
                    enum bfa_fcport_sm_event event);
static void     bfa_fcport_sm_linkdown(struct bfa_fcport_s *fcport,
                    enum bfa_fcport_sm_event event);
static void     bfa_fcport_sm_linkup(struct bfa_fcport_s *fcport,
                    enum bfa_fcport_sm_event event);
static void     bfa_fcport_sm_disabling(struct bfa_fcport_s *fcport,
                    enum bfa_fcport_sm_event event);
static void     bfa_fcport_sm_disabling_qwait(struct bfa_fcport_s *fcport,
                    enum bfa_fcport_sm_event event);
static void     bfa_fcport_sm_toggling_qwait(struct bfa_fcport_s *fcport,
                    enum bfa_fcport_sm_event event);
static void     bfa_fcport_sm_disabled(struct bfa_fcport_s *fcport,
                    enum bfa_fcport_sm_event event);
static void     bfa_fcport_sm_stopped(struct bfa_fcport_s *fcport,
                    enum bfa_fcport_sm_event event);
static void     bfa_fcport_sm_iocdown(struct bfa_fcport_s *fcport,
                    enum bfa_fcport_sm_event event);
static void     bfa_fcport_sm_iocfail(struct bfa_fcport_s *fcport,
                    enum bfa_fcport_sm_event event);
static void bfa_fcport_sm_dport(struct bfa_fcport_s *fcport,
                    enum bfa_fcport_sm_event event);
static void bfa_fcport_sm_faa_misconfig(struct bfa_fcport_s *fcport,
                    enum bfa_fcport_sm_event event);

static void     bfa_fcport_ln_sm_dn(struct bfa_fcport_ln_s *ln,
                    enum bfa_fcport_ln_sm_event event);
static void     bfa_fcport_ln_sm_dn_nf(struct bfa_fcport_ln_s *ln,
                    enum bfa_fcport_ln_sm_event event);
static void     bfa_fcport_ln_sm_dn_up_nf(struct bfa_fcport_ln_s *ln,
                    enum bfa_fcport_ln_sm_event event);
static void     bfa_fcport_ln_sm_up(struct bfa_fcport_ln_s *ln,
                    enum bfa_fcport_ln_sm_event event);
static void     bfa_fcport_ln_sm_up_nf(struct bfa_fcport_ln_s *ln,
                    enum bfa_fcport_ln_sm_event event);
static void     bfa_fcport_ln_sm_up_dn_nf(struct bfa_fcport_ln_s *ln,
                    enum bfa_fcport_ln_sm_event event);
static void     bfa_fcport_ln_sm_up_dn_up_nf(struct bfa_fcport_ln_s *ln,
                    enum bfa_fcport_ln_sm_event event);

static struct bfa_sm_table_s hal_port_sm_table[] = {
    {BFA_SM(bfa_fcport_sm_uninit), BFA_PORT_ST_UNINIT},
    {BFA_SM(bfa_fcport_sm_enabling_qwait), BFA_PORT_ST_ENABLING_QWAIT},
    {BFA_SM(bfa_fcport_sm_enabling), BFA_PORT_ST_ENABLING},
    {BFA_SM(bfa_fcport_sm_linkdown), BFA_PORT_ST_LINKDOWN},
    {BFA_SM(bfa_fcport_sm_linkup), BFA_PORT_ST_LINKUP},
    {BFA_SM(bfa_fcport_sm_disabling_qwait), BFA_PORT_ST_DISABLING_QWAIT},
    {BFA_SM(bfa_fcport_sm_toggling_qwait), BFA_PORT_ST_TOGGLING_QWAIT},
    {BFA_SM(bfa_fcport_sm_disabling), BFA_PORT_ST_DISABLING},
    {BFA_SM(bfa_fcport_sm_disabled), BFA_PORT_ST_DISABLED},
    {BFA_SM(bfa_fcport_sm_stopped), BFA_PORT_ST_STOPPED},
    {BFA_SM(bfa_fcport_sm_iocdown), BFA_PORT_ST_IOCDOWN},
    {BFA_SM(bfa_fcport_sm_iocfail), BFA_PORT_ST_IOCDOWN},
    {BFA_SM(bfa_fcport_sm_dport), BFA_PORT_ST_DPORT},
    {BFA_SM(bfa_fcport_sm_faa_misconfig), BFA_PORT_ST_FAA_MISCONFIG},
};


/*
 * forward declaration for RPORT related functions
 */
static struct bfa_rport_s *bfa_rport_alloc(struct bfa_rport_mod_s *rp_mod);
static void     bfa_rport_free(struct bfa_rport_s *rport);
static bfa_boolean_t    bfa_rport_send_fwcreate(struct bfa_rport_s *rp);
static bfa_boolean_t    bfa_rport_send_fwdelete(struct bfa_rport_s *rp);
static bfa_boolean_t    bfa_rport_send_fwspeed(struct bfa_rport_s *rp);
static void     __bfa_cb_rport_online(void *cbarg,
                        bfa_boolean_t complete);
static void     __bfa_cb_rport_offline(void *cbarg,
                        bfa_boolean_t complete);

/*
 * forward declaration for RPORT state machine
 */
static void     bfa_rport_sm_uninit(struct bfa_rport_s *rp,
                    enum bfa_rport_event event);
static void     bfa_rport_sm_created(struct bfa_rport_s *rp,
                    enum bfa_rport_event event);
static void     bfa_rport_sm_fwcreate(struct bfa_rport_s *rp,
                    enum bfa_rport_event event);
static void     bfa_rport_sm_online(struct bfa_rport_s *rp,
                    enum bfa_rport_event event);
static void     bfa_rport_sm_fwdelete(struct bfa_rport_s *rp,
                    enum bfa_rport_event event);
static void     bfa_rport_sm_offline(struct bfa_rport_s *rp,
                    enum bfa_rport_event event);
static void     bfa_rport_sm_deleting(struct bfa_rport_s *rp,
                    enum bfa_rport_event event);
static void     bfa_rport_sm_offline_pending(struct bfa_rport_s *rp,
                    enum bfa_rport_event event);
static void     bfa_rport_sm_delete_pending(struct bfa_rport_s *rp,
                    enum bfa_rport_event event);
static void     bfa_rport_sm_iocdisable(struct bfa_rport_s *rp,
                    enum bfa_rport_event event);
static void     bfa_rport_sm_fwcreate_qfull(struct bfa_rport_s *rp,
                    enum bfa_rport_event event);
static void     bfa_rport_sm_fwdelete_qfull(struct bfa_rport_s *rp,
                    enum bfa_rport_event event);
static void     bfa_rport_sm_deleting_qfull(struct bfa_rport_s *rp,
                    enum bfa_rport_event event);

/*
 * PLOG related definitions
 */
static int
plkd_validate_logrec(struct bfa_plog_rec_s *pl_rec)
{
    if ((pl_rec->log_type != BFA_PL_LOG_TYPE_INT) &&
        (pl_rec->log_type != BFA_PL_LOG_TYPE_STRING))
        return 1;

    if ((pl_rec->log_type != BFA_PL_LOG_TYPE_INT) &&
        (pl_rec->log_num_ints > BFA_PL_INT_LOG_SZ))
        return 1;

    return 0;
}

static u64
bfa_get_log_time(void)
{
    u64 system_time = 0;
    struct timeval tv;
    do_gettimeofday(&tv);

    /* We are interested in seconds only. */
    system_time = tv.tv_sec;
    return system_time;
}

static void
bfa_plog_add(struct bfa_plog_s *plog, struct bfa_plog_rec_s *pl_rec)
{
    u16 tail;
    struct bfa_plog_rec_s *pl_recp;

    if (plog->plog_enabled == 0)
        return;

    if (plkd_validate_logrec(pl_rec)) {
        WARN_ON(1);
        return;
    }

    tail = plog->tail;

    pl_recp = &(plog->plog_recs[tail]);

    memcpy(pl_recp, pl_rec, sizeof(struct bfa_plog_rec_s));

    pl_recp->tv = bfa_get_log_time();
    BFA_PL_LOG_REC_INCR(plog->tail);

    if (plog->head == plog->tail)
        BFA_PL_LOG_REC_INCR(plog->head);
}

void
bfa_plog_init(struct bfa_plog_s *plog)
{
    memset((char *)plog, 0, sizeof(struct bfa_plog_s));

    memcpy(plog->plog_sig, BFA_PL_SIG_STR, BFA_PL_SIG_LEN);
    plog->head = plog->tail = 0;
    plog->plog_enabled = 1;
}

void
bfa_plog_str(struct bfa_plog_s *plog, enum bfa_plog_mid mid,
        enum bfa_plog_eid event,
        u16 misc, char *log_str)
{
    struct bfa_plog_rec_s  lp;

    if (plog->plog_enabled) {
        memset(&lp, 0, sizeof(struct bfa_plog_rec_s));
        lp.mid = mid;
        lp.eid = event;
        lp.log_type = BFA_PL_LOG_TYPE_STRING;
        lp.misc = misc;
        strncpy(lp.log_entry.string_log, log_str,
            BFA_PL_STRING_LOG_SZ - 1);
        lp.log_entry.string_log[BFA_PL_STRING_LOG_SZ - 1] = '\0';
        bfa_plog_add(plog, &lp);
    }
}

void
bfa_plog_intarr(struct bfa_plog_s *plog, enum bfa_plog_mid mid,
        enum bfa_plog_eid event,
        u16 misc, u32 *intarr, u32 num_ints)
{
    struct bfa_plog_rec_s  lp;
    u32 i;

    if (num_ints > BFA_PL_INT_LOG_SZ)
        num_ints = BFA_PL_INT_LOG_SZ;

    if (plog->plog_enabled) {
        memset(&lp, 0, sizeof(struct bfa_plog_rec_s));
        lp.mid = mid;
        lp.eid = event;
        lp.log_type = BFA_PL_LOG_TYPE_INT;
        lp.misc = misc;

        for (i = 0; i < num_ints; i++)
            lp.log_entry.int_log[i] = intarr[i];

        lp.log_num_ints = (u8) num_ints;

        bfa_plog_add(plog, &lp);
    }
}

void
bfa_plog_fchdr(struct bfa_plog_s *plog, enum bfa_plog_mid mid,
            enum bfa_plog_eid event,
            u16 misc, struct fchs_s *fchdr)
{
    struct bfa_plog_rec_s  lp;
    u32 *tmp_int = (u32 *) fchdr;
    u32 ints[BFA_PL_INT_LOG_SZ];

    if (plog->plog_enabled) {
        memset(&lp, 0, sizeof(struct bfa_plog_rec_s));

        ints[0] = tmp_int[0];
        ints[1] = tmp_int[1];
        ints[2] = tmp_int[4];

        bfa_plog_intarr(plog, mid, event, misc, ints, 3);
    }
}

void
bfa_plog_fchdr_and_pl(struct bfa_plog_s *plog, enum bfa_plog_mid mid,
              enum bfa_plog_eid event, u16 misc, struct fchs_s *fchdr,
              u32 pld_w0)
{
    struct bfa_plog_rec_s  lp;
    u32 *tmp_int = (u32 *) fchdr;
    u32 ints[BFA_PL_INT_LOG_SZ];

    if (plog->plog_enabled) {
        memset(&lp, 0, sizeof(struct bfa_plog_rec_s));

        ints[0] = tmp_int[0];
        ints[1] = tmp_int[1];
        ints[2] = tmp_int[4];
        ints[3] = pld_w0;

        bfa_plog_intarr(plog, mid, event, misc, ints, 4);
    }
}


/*
 *  fcxp_pvt BFA FCXP private functions
 */

static void
claim_fcxps_mem(struct bfa_fcxp_mod_s *mod)
{
    u16 i;
    struct bfa_fcxp_s *fcxp;

    fcxp = (struct bfa_fcxp_s *) bfa_mem_kva_curp(mod);
    memset(fcxp, 0, sizeof(struct bfa_fcxp_s) * mod->num_fcxps);

    INIT_LIST_HEAD(&mod->fcxp_req_free_q);
    INIT_LIST_HEAD(&mod->fcxp_rsp_free_q);
    INIT_LIST_HEAD(&mod->fcxp_active_q);
    INIT_LIST_HEAD(&mod->fcxp_req_unused_q);
    INIT_LIST_HEAD(&mod->fcxp_rsp_unused_q);

    mod->fcxp_list = fcxp;

    for (i = 0; i < mod->num_fcxps; i++) {
        fcxp->fcxp_mod = mod;
        fcxp->fcxp_tag = i;

        if (i < (mod->num_fcxps / 2)) {
            list_add_tail(&fcxp->qe, &mod->fcxp_req_free_q);
            fcxp->req_rsp = BFA_TRUE;
        } else {
            list_add_tail(&fcxp->qe, &mod->fcxp_rsp_free_q);
            fcxp->req_rsp = BFA_FALSE;
        }

        bfa_reqq_winit(&fcxp->reqq_wqe, bfa_fcxp_qresume, fcxp);
        fcxp->reqq_waiting = BFA_FALSE;

        fcxp = fcxp + 1;
    }

    bfa_mem_kva_curp(mod) = (void *)fcxp;
}

static void
bfa_fcxp_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo,
        struct bfa_s *bfa)
{
    struct bfa_fcxp_mod_s *fcxp_mod = BFA_FCXP_MOD(bfa);
    struct bfa_mem_kva_s *fcxp_kva = BFA_MEM_FCXP_KVA(bfa);
    struct bfa_mem_dma_s *seg_ptr;
    u16 nsegs, idx, per_seg_fcxp;
    u16 num_fcxps = cfg->fwcfg.num_fcxp_reqs;
    u32 per_fcxp_sz;

    if (num_fcxps == 0)
        return;

    if (cfg->drvcfg.min_cfg)
        per_fcxp_sz = 2 * BFA_FCXP_MAX_IBUF_SZ;
    else
        per_fcxp_sz = BFA_FCXP_MAX_IBUF_SZ + BFA_FCXP_MAX_LBUF_SZ;

    /* dma memory */
    nsegs = BFI_MEM_DMA_NSEGS(num_fcxps, per_fcxp_sz);
    per_seg_fcxp = BFI_MEM_NREQS_SEG(per_fcxp_sz);

    bfa_mem_dma_seg_iter(fcxp_mod, seg_ptr, nsegs, idx) {
        if (num_fcxps >= per_seg_fcxp) {
            num_fcxps -= per_seg_fcxp;
            bfa_mem_dma_setup(minfo, seg_ptr,
                per_seg_fcxp * per_fcxp_sz);
        } else
            bfa_mem_dma_setup(minfo, seg_ptr,
                num_fcxps * per_fcxp_sz);
    }

    /* kva memory */
    bfa_mem_kva_setup(minfo, fcxp_kva,
        cfg->fwcfg.num_fcxp_reqs * sizeof(struct bfa_fcxp_s));
}

static void
bfa_fcxp_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
        struct bfa_pcidev_s *pcidev)
{
    struct bfa_fcxp_mod_s *mod = BFA_FCXP_MOD(bfa);

    mod->bfa = bfa;
    mod->num_fcxps = cfg->fwcfg.num_fcxp_reqs;

    /*
     * Initialize FCXP request and response payload sizes.
     */
    mod->req_pld_sz = mod->rsp_pld_sz = BFA_FCXP_MAX_IBUF_SZ;
    if (!cfg->drvcfg.min_cfg)
        mod->rsp_pld_sz = BFA_FCXP_MAX_LBUF_SZ;

    INIT_LIST_HEAD(&mod->req_wait_q);
    INIT_LIST_HEAD(&mod->rsp_wait_q);

    claim_fcxps_mem(mod);
}

static void
bfa_fcxp_detach(struct bfa_s *bfa)
{
}

static void
bfa_fcxp_start(struct bfa_s *bfa)
{
}

static void
bfa_fcxp_stop(struct bfa_s *bfa)
{
}

static void
bfa_fcxp_iocdisable(struct bfa_s *bfa)
{
    struct bfa_fcxp_mod_s *mod = BFA_FCXP_MOD(bfa);
    struct bfa_fcxp_s *fcxp;
    struct list_head          *qe, *qen;

    /* Enqueue unused fcxp resources to free_q */
    list_splice_tail_init(&mod->fcxp_req_unused_q, &mod->fcxp_req_free_q);
    list_splice_tail_init(&mod->fcxp_rsp_unused_q, &mod->fcxp_rsp_free_q);

    list_for_each_safe(qe, qen, &mod->fcxp_active_q) {
        fcxp = (struct bfa_fcxp_s *) qe;
        if (fcxp->caller == NULL) {
            fcxp->send_cbfn(fcxp->caller, fcxp, fcxp->send_cbarg,
                    BFA_STATUS_IOC_FAILURE, 0, 0, NULL);
            bfa_fcxp_free(fcxp);
        } else {
            fcxp->rsp_status = BFA_STATUS_IOC_FAILURE;
            bfa_cb_queue(bfa, &fcxp->hcb_qe,
                     __bfa_fcxp_send_cbfn, fcxp);
        }
    }
}

static struct bfa_fcxp_s *
bfa_fcxp_get(struct bfa_fcxp_mod_s *fm, bfa_boolean_t req)
{
    struct bfa_fcxp_s *fcxp;

    if (req)
        bfa_q_deq(&fm->fcxp_req_free_q, &fcxp);
    else
        bfa_q_deq(&fm->fcxp_rsp_free_q, &fcxp);

    if (fcxp)
        list_add_tail(&fcxp->qe, &fm->fcxp_active_q);

    return fcxp;
}

static void
bfa_fcxp_init_reqrsp(struct bfa_fcxp_s *fcxp,
           struct bfa_s *bfa,
           u8 *use_ibuf,
           u32 *nr_sgles,
           bfa_fcxp_get_sgaddr_t *r_sga_cbfn,
           bfa_fcxp_get_sglen_t *r_sglen_cbfn,
           struct list_head *r_sgpg_q,
           int n_sgles,
           bfa_fcxp_get_sgaddr_t sga_cbfn,
           bfa_fcxp_get_sglen_t sglen_cbfn)
{

    WARN_ON(bfa == NULL);

    bfa_trc(bfa, fcxp->fcxp_tag);

    if (n_sgles == 0) {
        *use_ibuf = 1;
    } else {
        WARN_ON(*sga_cbfn == NULL);
        WARN_ON(*sglen_cbfn == NULL);

        *use_ibuf = 0;
        *r_sga_cbfn = sga_cbfn;
        *r_sglen_cbfn = sglen_cbfn;

        *nr_sgles = n_sgles;

        /*
         * alloc required sgpgs
         */
        if (n_sgles > BFI_SGE_INLINE)
            WARN_ON(1);
    }

}

static void
bfa_fcxp_init(struct bfa_fcxp_s *fcxp,
           void *caller, struct bfa_s *bfa, int nreq_sgles,
           int nrsp_sgles, bfa_fcxp_get_sgaddr_t req_sga_cbfn,
           bfa_fcxp_get_sglen_t req_sglen_cbfn,
           bfa_fcxp_get_sgaddr_t rsp_sga_cbfn,
           bfa_fcxp_get_sglen_t rsp_sglen_cbfn)
{

    WARN_ON(bfa == NULL);

    bfa_trc(bfa, fcxp->fcxp_tag);

    fcxp->caller = caller;

    bfa_fcxp_init_reqrsp(fcxp, bfa,
        &fcxp->use_ireqbuf, &fcxp->nreq_sgles, &fcxp->req_sga_cbfn,
        &fcxp->req_sglen_cbfn, &fcxp->req_sgpg_q,
        nreq_sgles, req_sga_cbfn, req_sglen_cbfn);

    bfa_fcxp_init_reqrsp(fcxp, bfa,
        &fcxp->use_irspbuf, &fcxp->nrsp_sgles, &fcxp->rsp_sga_cbfn,
        &fcxp->rsp_sglen_cbfn, &fcxp->rsp_sgpg_q,
        nrsp_sgles, rsp_sga_cbfn, rsp_sglen_cbfn);

}

static void
bfa_fcxp_put(struct bfa_fcxp_s *fcxp)
{
    struct bfa_fcxp_mod_s *mod = fcxp->fcxp_mod;
    struct bfa_fcxp_wqe_s *wqe;

    if (fcxp->req_rsp)
        bfa_q_deq(&mod->req_wait_q, &wqe);
    else
        bfa_q_deq(&mod->rsp_wait_q, &wqe);

    if (wqe) {
        bfa_trc(mod->bfa, fcxp->fcxp_tag);

        bfa_fcxp_init(fcxp, wqe->caller, wqe->bfa, wqe->nreq_sgles,
            wqe->nrsp_sgles, wqe->req_sga_cbfn,
            wqe->req_sglen_cbfn, wqe->rsp_sga_cbfn,
            wqe->rsp_sglen_cbfn);

        wqe->alloc_cbfn(wqe->alloc_cbarg, fcxp);
        return;
    }

    WARN_ON(!bfa_q_is_on_q(&mod->fcxp_active_q, fcxp));
    list_del(&fcxp->qe);

    if (fcxp->req_rsp)
        list_add_tail(&fcxp->qe, &mod->fcxp_req_free_q);
    else
        list_add_tail(&fcxp->qe, &mod->fcxp_rsp_free_q);
}

static void
bfa_fcxp_null_comp(void *bfad_fcxp, struct bfa_fcxp_s *fcxp, void *cbarg,
           bfa_status_t req_status, u32 rsp_len,
           u32 resid_len, struct fchs_s *rsp_fchs)
{
    /* discarded fcxp completion */
}

static void
__bfa_fcxp_send_cbfn(void *cbarg, bfa_boolean_t complete)
{
    struct bfa_fcxp_s *fcxp = cbarg;

    if (complete) {
        fcxp->send_cbfn(fcxp->caller, fcxp, fcxp->send_cbarg,
                fcxp->rsp_status, fcxp->rsp_len,
                fcxp->residue_len, &fcxp->rsp_fchs);
    } else {
        bfa_fcxp_free(fcxp);
    }
}

static void
hal_fcxp_send_comp(struct bfa_s *bfa, struct bfi_fcxp_send_rsp_s *fcxp_rsp)
{
    struct bfa_fcxp_mod_s   *mod = BFA_FCXP_MOD(bfa);
    struct bfa_fcxp_s   *fcxp;
    u16     fcxp_tag = be16_to_cpu(fcxp_rsp->fcxp_tag);

    bfa_trc(bfa, fcxp_tag);

    fcxp_rsp->rsp_len = be32_to_cpu(fcxp_rsp->rsp_len);

    /*
     * @todo f/w should not set residue to non-0 when everything
     *   is received.
     */
    if (fcxp_rsp->req_status == BFA_STATUS_OK)
        fcxp_rsp->residue_len = 0;
    else
        fcxp_rsp->residue_len = be32_to_cpu(fcxp_rsp->residue_len);

    fcxp = BFA_FCXP_FROM_TAG(mod, fcxp_tag);

    WARN_ON(fcxp->send_cbfn == NULL);

    hal_fcxp_rx_plog(mod->bfa, fcxp, fcxp_rsp);

    if (fcxp->send_cbfn != NULL) {
        bfa_trc(mod->bfa, (NULL == fcxp->caller));
        if (fcxp->caller == NULL) {
            fcxp->send_cbfn(fcxp->caller, fcxp, fcxp->send_cbarg,
                    fcxp_rsp->req_status, fcxp_rsp->rsp_len,
                    fcxp_rsp->residue_len, &fcxp_rsp->fchs);
            /*
             * fcxp automatically freed on return from the callback
             */
            bfa_fcxp_free(fcxp);
        } else {
            fcxp->rsp_status = fcxp_rsp->req_status;
            fcxp->rsp_len = fcxp_rsp->rsp_len;
            fcxp->residue_len = fcxp_rsp->residue_len;
            fcxp->rsp_fchs = fcxp_rsp->fchs;

            bfa_cb_queue(bfa, &fcxp->hcb_qe,
                    __bfa_fcxp_send_cbfn, fcxp);
        }
    } else {
        bfa_trc(bfa, (NULL == fcxp->send_cbfn));
    }
}

static void
hal_fcxp_tx_plog(struct bfa_s *bfa, u32 reqlen, struct bfa_fcxp_s *fcxp,
         struct fchs_s *fchs)
{
    /*
     * TODO: TX ox_id
     */
    if (reqlen > 0) {
        if (fcxp->use_ireqbuf) {
            u32 pld_w0 =
                *((u32 *) BFA_FCXP_REQ_PLD(fcxp));

            bfa_plog_fchdr_and_pl(bfa->plog, BFA_PL_MID_HAL_FCXP,
                    BFA_PL_EID_TX,
                    reqlen + sizeof(struct fchs_s), fchs,
                    pld_w0);
        } else {
            bfa_plog_fchdr(bfa->plog, BFA_PL_MID_HAL_FCXP,
                    BFA_PL_EID_TX,
                    reqlen + sizeof(struct fchs_s),
                    fchs);
        }
    } else {
        bfa_plog_fchdr(bfa->plog, BFA_PL_MID_HAL_FCXP, BFA_PL_EID_TX,
                   reqlen + sizeof(struct fchs_s), fchs);
    }
}

static void
hal_fcxp_rx_plog(struct bfa_s *bfa, struct bfa_fcxp_s *fcxp,
         struct bfi_fcxp_send_rsp_s *fcxp_rsp)
{
    if (fcxp_rsp->rsp_len > 0) {
        if (fcxp->use_irspbuf) {
            u32 pld_w0 =
                *((u32 *) BFA_FCXP_RSP_PLD(fcxp));

            bfa_plog_fchdr_and_pl(bfa->plog, BFA_PL_MID_HAL_FCXP,
                          BFA_PL_EID_RX,
                          (u16) fcxp_rsp->rsp_len,
                          &fcxp_rsp->fchs, pld_w0);
        } else {
            bfa_plog_fchdr(bfa->plog, BFA_PL_MID_HAL_FCXP,
                       BFA_PL_EID_RX,
                       (u16) fcxp_rsp->rsp_len,
                       &fcxp_rsp->fchs);
        }
    } else {
        bfa_plog_fchdr(bfa->plog, BFA_PL_MID_HAL_FCXP, BFA_PL_EID_RX,
                   (u16) fcxp_rsp->rsp_len, &fcxp_rsp->fchs);
    }
}

/*
 * Handler to resume sending fcxp when space in available in cpe queue.
 */
static void
bfa_fcxp_qresume(void *cbarg)
{
    struct bfa_fcxp_s       *fcxp = cbarg;
    struct bfa_s            *bfa = fcxp->fcxp_mod->bfa;
    struct bfi_fcxp_send_req_s  *send_req;

    fcxp->reqq_waiting = BFA_FALSE;
    send_req = bfa_reqq_next(bfa, BFA_REQQ_FCXP);
    bfa_fcxp_queue(fcxp, send_req);
}

/*
 * Queue fcxp send request to foimrware.
 */
static void
bfa_fcxp_queue(struct bfa_fcxp_s *fcxp, struct bfi_fcxp_send_req_s *send_req)
{
    struct bfa_s            *bfa = fcxp->fcxp_mod->bfa;
    struct bfa_fcxp_req_info_s  *reqi = &fcxp->req_info;
    struct bfa_fcxp_rsp_info_s  *rspi = &fcxp->rsp_info;
    struct bfa_rport_s      *rport = reqi->bfa_rport;

    bfi_h2i_set(send_req->mh, BFI_MC_FCXP, BFI_FCXP_H2I_SEND_REQ,
            bfa_fn_lpu(bfa));

    send_req->fcxp_tag = cpu_to_be16(fcxp->fcxp_tag);
    if (rport) {
        send_req->rport_fw_hndl = rport->fw_handle;
        send_req->max_frmsz = cpu_to_be16(rport->rport_info.max_frmsz);
        if (send_req->max_frmsz == 0)
            send_req->max_frmsz = cpu_to_be16(FC_MAX_PDUSZ);
    } else {
        send_req->rport_fw_hndl = 0;
        send_req->max_frmsz = cpu_to_be16(FC_MAX_PDUSZ);
    }

    send_req->vf_id = cpu_to_be16(reqi->vf_id);
    send_req->lp_fwtag = bfa_lps_get_fwtag(bfa, reqi->lp_tag);
    send_req->class = reqi->class;
    send_req->rsp_timeout = rspi->rsp_timeout;
    send_req->cts = reqi->cts;
    send_req->fchs = reqi->fchs;

    send_req->req_len = cpu_to_be32(reqi->req_tot_len);
    send_req->rsp_maxlen = cpu_to_be32(rspi->rsp_maxlen);

    /*
     * setup req sgles
     */
    if (fcxp->use_ireqbuf == 1) {
        bfa_alen_set(&send_req->req_alen, reqi->req_tot_len,
                    BFA_FCXP_REQ_PLD_PA(fcxp));
    } else {
        if (fcxp->nreq_sgles > 0) {
            WARN_ON(fcxp->nreq_sgles != 1);
            bfa_alen_set(&send_req->req_alen, reqi->req_tot_len,
                fcxp->req_sga_cbfn(fcxp->caller, 0));
        } else {
            WARN_ON(reqi->req_tot_len != 0);
            bfa_alen_set(&send_req->rsp_alen, 0, 0);
        }
    }

    /*
     * setup rsp sgles
     */
    if (fcxp->use_irspbuf == 1) {
        WARN_ON(rspi->rsp_maxlen > BFA_FCXP_MAX_LBUF_SZ);

        bfa_alen_set(&send_req->rsp_alen, rspi->rsp_maxlen,
                    BFA_FCXP_RSP_PLD_PA(fcxp));
    } else {
        if (fcxp->nrsp_sgles > 0) {
            WARN_ON(fcxp->nrsp_sgles != 1);
            bfa_alen_set(&send_req->rsp_alen, rspi->rsp_maxlen,
                fcxp->rsp_sga_cbfn(fcxp->caller, 0));

        } else {
            WARN_ON(rspi->rsp_maxlen != 0);
            bfa_alen_set(&send_req->rsp_alen, 0, 0);
        }
    }

    hal_fcxp_tx_plog(bfa, reqi->req_tot_len, fcxp, &reqi->fchs);

    bfa_reqq_produce(bfa, BFA_REQQ_FCXP, send_req->mh);

    bfa_trc(bfa, bfa_reqq_pi(bfa, BFA_REQQ_FCXP));
    bfa_trc(bfa, bfa_reqq_ci(bfa, BFA_REQQ_FCXP));
}

/*
 * Allocate an FCXP instance to send a response or to send a request
 * that has a response. Request/response buffers are allocated by caller.
 *
 * @param[in]   bfa     BFA bfa instance
 * @param[in]   nreq_sgles  Number of SG elements required for request
 *              buffer. 0, if fcxp internal buffers are used.
 *              Use bfa_fcxp_get_reqbuf() to get the
 *              internal req buffer.
 * @param[in]   req_sgles   SG elements describing request buffer. Will be
 *              copied in by BFA and hence can be freed on
 *              return from this function.
 * @param[in]   get_req_sga function ptr to be called to get a request SG
 *              Address (given the sge index).
 * @param[in]   get_req_sglen   function ptr to be called to get a request SG
 *              len (given the sge index).
 * @param[in]   get_rsp_sga function ptr to be called to get a response SG
 *              Address (given the sge index).
 * @param[in]   get_rsp_sglen   function ptr to be called to get a response SG
 *              len (given the sge index).
 * @param[in]   req     Allocated FCXP is used to send req or rsp?
 *              request - BFA_TRUE, response - BFA_FALSE
 *
 * @return FCXP instance. NULL on failure.
 */
struct bfa_fcxp_s *
bfa_fcxp_req_rsp_alloc(void *caller, struct bfa_s *bfa, int nreq_sgles,
        int nrsp_sgles, bfa_fcxp_get_sgaddr_t req_sga_cbfn,
        bfa_fcxp_get_sglen_t req_sglen_cbfn,
        bfa_fcxp_get_sgaddr_t rsp_sga_cbfn,
        bfa_fcxp_get_sglen_t rsp_sglen_cbfn, bfa_boolean_t req)
{
    struct bfa_fcxp_s *fcxp = NULL;

    WARN_ON(bfa == NULL);

    fcxp = bfa_fcxp_get(BFA_FCXP_MOD(bfa), req);
    if (fcxp == NULL)
        return NULL;

    bfa_trc(bfa, fcxp->fcxp_tag);

    bfa_fcxp_init(fcxp, caller, bfa, nreq_sgles, nrsp_sgles, req_sga_cbfn,
            req_sglen_cbfn, rsp_sga_cbfn, rsp_sglen_cbfn);

    return fcxp;
}

/*
 * Get the internal request buffer pointer
 *
 * @param[in]   fcxp    BFA fcxp pointer
 *
 * @return      pointer to the internal request buffer
 */
void *
bfa_fcxp_get_reqbuf(struct bfa_fcxp_s *fcxp)
{
    struct bfa_fcxp_mod_s *mod = fcxp->fcxp_mod;
    void    *reqbuf;

    WARN_ON(fcxp->use_ireqbuf != 1);
    reqbuf = bfa_mem_get_dmabuf_kva(mod, fcxp->fcxp_tag,
                mod->req_pld_sz + mod->rsp_pld_sz);
    return reqbuf;
}

u32
bfa_fcxp_get_reqbufsz(struct bfa_fcxp_s *fcxp)
{
    struct bfa_fcxp_mod_s *mod = fcxp->fcxp_mod;

    return mod->req_pld_sz;
}

/*
 * Get the internal response buffer pointer
 *
 * @param[in]   fcxp    BFA fcxp pointer
 *
 * @return      pointer to the internal request buffer
 */
void *
bfa_fcxp_get_rspbuf(struct bfa_fcxp_s *fcxp)
{
    struct bfa_fcxp_mod_s *mod = fcxp->fcxp_mod;
    void    *fcxp_buf;

    WARN_ON(fcxp->use_irspbuf != 1);

    fcxp_buf = bfa_mem_get_dmabuf_kva(mod, fcxp->fcxp_tag,
                mod->req_pld_sz + mod->rsp_pld_sz);

    /* fcxp_buf = req_buf + rsp_buf :- add req_buf_sz to get to rsp_buf */
    return ((u8 *) fcxp_buf) + mod->req_pld_sz;
}

/*
 * Free the BFA FCXP
 *
 * @param[in]   fcxp            BFA fcxp pointer
 *
 * @return      void
 */
void
bfa_fcxp_free(struct bfa_fcxp_s *fcxp)
{
    struct bfa_fcxp_mod_s *mod = fcxp->fcxp_mod;

    WARN_ON(fcxp == NULL);
    bfa_trc(mod->bfa, fcxp->fcxp_tag);
    bfa_fcxp_put(fcxp);
}

/*
 * Send a FCXP request
 *
 * @param[in]   fcxp    BFA fcxp pointer
 * @param[in]   rport   BFA rport pointer. Could be left NULL for WKA rports
 * @param[in]   vf_id   virtual Fabric ID
 * @param[in]   lp_tag  lport tag
 * @param[in]   cts use Continuous sequence
 * @param[in]   cos fc Class of Service
 * @param[in]   reqlen  request length, does not include FCHS length
 * @param[in]   fchs    fc Header Pointer. The header content will be copied
 *          in by BFA.
 *
 * @param[in]   cbfn    call back function to be called on receiving
 *                              the response
 * @param[in]   cbarg   arg for cbfn
 * @param[in]   rsp_timeout
 *          response timeout
 *
 * @return      bfa_status_t
 */
void
bfa_fcxp_send(struct bfa_fcxp_s *fcxp, struct bfa_rport_s *rport,
          u16 vf_id, u8 lp_tag, bfa_boolean_t cts, enum fc_cos cos,
          u32 reqlen, struct fchs_s *fchs, bfa_cb_fcxp_send_t cbfn,
          void *cbarg, u32 rsp_maxlen, u8 rsp_timeout)
{
    struct bfa_s            *bfa  = fcxp->fcxp_mod->bfa;
    struct bfa_fcxp_req_info_s  *reqi = &fcxp->req_info;
    struct bfa_fcxp_rsp_info_s  *rspi = &fcxp->rsp_info;
    struct bfi_fcxp_send_req_s  *send_req;

    bfa_trc(bfa, fcxp->fcxp_tag);

    /*
     * setup request/response info
     */
    reqi->bfa_rport = rport;
    reqi->vf_id = vf_id;
    reqi->lp_tag = lp_tag;
    reqi->class = cos;
    rspi->rsp_timeout = rsp_timeout;
    reqi->cts = cts;
    reqi->fchs = *fchs;
    reqi->req_tot_len = reqlen;
    rspi->rsp_maxlen = rsp_maxlen;
    fcxp->send_cbfn = cbfn ? cbfn : bfa_fcxp_null_comp;
    fcxp->send_cbarg = cbarg;

    /*
     * If no room in CPE queue, wait for space in request queue
     */
    send_req = bfa_reqq_next(bfa, BFA_REQQ_FCXP);
    if (!send_req) {
        bfa_trc(bfa, fcxp->fcxp_tag);
        fcxp->reqq_waiting = BFA_TRUE;
        bfa_reqq_wait(bfa, BFA_REQQ_FCXP, &fcxp->reqq_wqe);
        return;
    }

    bfa_fcxp_queue(fcxp, send_req);
}

/*
 * Abort a BFA FCXP
 *
 * @param[in]   fcxp    BFA fcxp pointer
 *
 * @return      void
 */
bfa_status_t
bfa_fcxp_abort(struct bfa_fcxp_s *fcxp)
{
    bfa_trc(fcxp->fcxp_mod->bfa, fcxp->fcxp_tag);
    WARN_ON(1);
    return BFA_STATUS_OK;
}

void
bfa_fcxp_req_rsp_alloc_wait(struct bfa_s *bfa, struct bfa_fcxp_wqe_s *wqe,
           bfa_fcxp_alloc_cbfn_t alloc_cbfn, void *alloc_cbarg,
           void *caller, int nreq_sgles,
           int nrsp_sgles, bfa_fcxp_get_sgaddr_t req_sga_cbfn,
           bfa_fcxp_get_sglen_t req_sglen_cbfn,
           bfa_fcxp_get_sgaddr_t rsp_sga_cbfn,
           bfa_fcxp_get_sglen_t rsp_sglen_cbfn, bfa_boolean_t req)
{
    struct bfa_fcxp_mod_s *mod = BFA_FCXP_MOD(bfa);

    if (req)
        WARN_ON(!list_empty(&mod->fcxp_req_free_q));
    else
        WARN_ON(!list_empty(&mod->fcxp_rsp_free_q));

    wqe->alloc_cbfn = alloc_cbfn;
    wqe->alloc_cbarg = alloc_cbarg;
    wqe->caller = caller;
    wqe->bfa = bfa;
    wqe->nreq_sgles = nreq_sgles;
    wqe->nrsp_sgles = nrsp_sgles;
    wqe->req_sga_cbfn = req_sga_cbfn;
    wqe->req_sglen_cbfn = req_sglen_cbfn;
    wqe->rsp_sga_cbfn = rsp_sga_cbfn;
    wqe->rsp_sglen_cbfn = rsp_sglen_cbfn;

    if (req)
        list_add_tail(&wqe->qe, &mod->req_wait_q);
    else
        list_add_tail(&wqe->qe, &mod->rsp_wait_q);
}

void
bfa_fcxp_walloc_cancel(struct bfa_s *bfa, struct bfa_fcxp_wqe_s *wqe)
{
    struct bfa_fcxp_mod_s *mod = BFA_FCXP_MOD(bfa);

    WARN_ON(!bfa_q_is_on_q(&mod->req_wait_q, wqe) ||
        !bfa_q_is_on_q(&mod->rsp_wait_q, wqe));
    list_del(&wqe->qe);
}

void
bfa_fcxp_discard(struct bfa_fcxp_s *fcxp)
{
    /*
     * If waiting for room in request queue, cancel reqq wait
     * and free fcxp.
     */
    if (fcxp->reqq_waiting) {
        fcxp->reqq_waiting = BFA_FALSE;
        bfa_reqq_wcancel(&fcxp->reqq_wqe);
        bfa_fcxp_free(fcxp);
        return;
    }

    fcxp->send_cbfn = bfa_fcxp_null_comp;
}

void
bfa_fcxp_isr(struct bfa_s *bfa, struct bfi_msg_s *msg)
{
    switch (msg->mhdr.msg_id) {
    case BFI_FCXP_I2H_SEND_RSP:
        hal_fcxp_send_comp(bfa, (struct bfi_fcxp_send_rsp_s *) msg);
        break;

    default:
        bfa_trc(bfa, msg->mhdr.msg_id);
        WARN_ON(1);
    }
}

u32
bfa_fcxp_get_maxrsp(struct bfa_s *bfa)
{
    struct bfa_fcxp_mod_s *mod = BFA_FCXP_MOD(bfa);

    return mod->rsp_pld_sz;
}

void
bfa_fcxp_res_recfg(struct bfa_s *bfa, u16 num_fcxp_fw)
{
    struct bfa_fcxp_mod_s   *mod = BFA_FCXP_MOD(bfa);
    struct list_head    *qe;
    int i;

    for (i = 0; i < (mod->num_fcxps - num_fcxp_fw); i++) {
        if (i < ((mod->num_fcxps - num_fcxp_fw) / 2)) {
            bfa_q_deq_tail(&mod->fcxp_req_free_q, &qe);
            list_add_tail(qe, &mod->fcxp_req_unused_q);
        } else {
            bfa_q_deq_tail(&mod->fcxp_rsp_free_q, &qe);
            list_add_tail(qe, &mod->fcxp_rsp_unused_q);
        }
    }
}

/*
 *  BFA LPS state machine functions
 */

/*
 * Init state -- no login
 */
static void
bfa_lps_sm_init(struct bfa_lps_s *lps, enum bfa_lps_event event)
{
    bfa_trc(lps->bfa, lps->bfa_tag);
    bfa_trc(lps->bfa, event);

    switch (event) {
    case BFA_LPS_SM_LOGIN:
        if (bfa_reqq_full(lps->bfa, lps->reqq)) {
            bfa_sm_set_state(lps, bfa_lps_sm_loginwait);
            bfa_reqq_wait(lps->bfa, lps->reqq, &lps->wqe);
        } else {
            bfa_sm_set_state(lps, bfa_lps_sm_login);
            bfa_lps_send_login(lps);
        }

        if (lps->fdisc)
            bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
                BFA_PL_EID_LOGIN, 0, "FDISC Request");
        else
            bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
                BFA_PL_EID_LOGIN, 0, "FLOGI Request");
        break;

    case BFA_LPS_SM_LOGOUT:
        bfa_lps_logout_comp(lps);
        break;

    case BFA_LPS_SM_DELETE:
        bfa_lps_free(lps);
        break;

    case BFA_LPS_SM_RX_CVL:
    case BFA_LPS_SM_OFFLINE:
        break;

    case BFA_LPS_SM_FWRSP:
        /*
         * Could happen when fabric detects loopback and discards
         * the lps request. Fw will eventually sent out the timeout
         * Just ignore
         */
        break;
    case BFA_LPS_SM_SET_N2N_PID:
        /*
         * When topology is set to loop, bfa_lps_set_n2n_pid() sends
         * this event. Ignore this event.
         */
        break;

    default:
        bfa_sm_fault(lps->bfa, event);
    }
}

/*
 * login is in progress -- awaiting response from firmware
 */
static void
bfa_lps_sm_login(struct bfa_lps_s *lps, enum bfa_lps_event event)
{
    bfa_trc(lps->bfa, lps->bfa_tag);
    bfa_trc(lps->bfa, event);

    switch (event) {
    case BFA_LPS_SM_FWRSP:
    case BFA_LPS_SM_OFFLINE:
        if (lps->status == BFA_STATUS_OK) {
            bfa_sm_set_state(lps, bfa_lps_sm_online);
            if (lps->fdisc)
                bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
                    BFA_PL_EID_LOGIN, 0, "FDISC Accept");
            else
                bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
                    BFA_PL_EID_LOGIN, 0, "FLOGI Accept");
            /* If N2N, send the assigned PID to FW */
            bfa_trc(lps->bfa, lps->fport);
            bfa_trc(lps->bfa, lps->lp_pid);

            if (!lps->fport && lps->lp_pid)
                bfa_sm_send_event(lps, BFA_LPS_SM_SET_N2N_PID);
        } else {
            bfa_sm_set_state(lps, bfa_lps_sm_init);
            if (lps->fdisc)
                bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
                    BFA_PL_EID_LOGIN, 0,
                    "FDISC Fail (RJT or timeout)");
            else
                bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
                    BFA_PL_EID_LOGIN, 0,
                    "FLOGI Fail (RJT or timeout)");
        }
        bfa_lps_login_comp(lps);
        break;

    case BFA_LPS_SM_DELETE:
        bfa_sm_set_state(lps, bfa_lps_sm_init);
        break;

    case BFA_LPS_SM_SET_N2N_PID:
        bfa_trc(lps->bfa, lps->fport);
        bfa_trc(lps->bfa, lps->lp_pid);
        break;

    default:
        bfa_sm_fault(lps->bfa, event);
    }
}

/*
 * login pending - awaiting space in request queue
 */
static void
bfa_lps_sm_loginwait(struct bfa_lps_s *lps, enum bfa_lps_event event)
{
    bfa_trc(lps->bfa, lps->bfa_tag);
    bfa_trc(lps->bfa, event);

    switch (event) {
    case BFA_LPS_SM_RESUME:
        bfa_sm_set_state(lps, bfa_lps_sm_login);
        bfa_lps_send_login(lps);
        break;

    case BFA_LPS_SM_OFFLINE:
    case BFA_LPS_SM_DELETE:
        bfa_sm_set_state(lps, bfa_lps_sm_init);
        bfa_reqq_wcancel(&lps->wqe);
        break;

    case BFA_LPS_SM_RX_CVL:
        /*
         * Login was not even sent out; so when getting out
         * of this state, it will appear like a login retry
         * after Clear virtual link
         */
        break;

    default:
        bfa_sm_fault(lps->bfa, event);
    }
}

/*
 * login complete
 */
static void
bfa_lps_sm_online(struct bfa_lps_s *lps, enum bfa_lps_event event)
{
    bfa_trc(lps->bfa, lps->bfa_tag);
    bfa_trc(lps->bfa, event);

    switch (event) {
    case BFA_LPS_SM_LOGOUT:
        if (bfa_reqq_full(lps->bfa, lps->reqq)) {
            bfa_sm_set_state(lps, bfa_lps_sm_logowait);
            bfa_reqq_wait(lps->bfa, lps->reqq, &lps->wqe);
        } else {
            bfa_sm_set_state(lps, bfa_lps_sm_logout);
            bfa_lps_send_logout(lps);
        }
        bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
            BFA_PL_EID_LOGO, 0, "Logout");
        break;

    case BFA_LPS_SM_RX_CVL:
        bfa_sm_set_state(lps, bfa_lps_sm_init);

        /* Let the vport module know about this event */
        bfa_lps_cvl_event(lps);
        bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
            BFA_PL_EID_FIP_FCF_CVL, 0, "FCF Clear Virt. Link Rx");
        break;

    case BFA_LPS_SM_SET_N2N_PID:
        if (bfa_reqq_full(lps->bfa, lps->reqq)) {
            bfa_sm_set_state(lps, bfa_lps_sm_online_n2n_pid_wait);
            bfa_reqq_wait(lps->bfa, lps->reqq, &lps->wqe);
        } else
            bfa_lps_send_set_n2n_pid(lps);
        break;

    case BFA_LPS_SM_OFFLINE:
    case BFA_LPS_SM_DELETE:
        bfa_sm_set_state(lps, bfa_lps_sm_init);
        break;

    default:
        bfa_sm_fault(lps->bfa, event);
    }
}

/*
 * login complete
 */
static void
bfa_lps_sm_online_n2n_pid_wait(struct bfa_lps_s *lps, enum bfa_lps_event event)
{
    bfa_trc(lps->bfa, lps->bfa_tag);
    bfa_trc(lps->bfa, event);

    switch (event) {
    case BFA_LPS_SM_RESUME:
        bfa_sm_set_state(lps, bfa_lps_sm_online);
        bfa_lps_send_set_n2n_pid(lps);
        break;

    case BFA_LPS_SM_LOGOUT:
        bfa_sm_set_state(lps, bfa_lps_sm_logowait);
        bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
            BFA_PL_EID_LOGO, 0, "Logout");
        break;

    case BFA_LPS_SM_RX_CVL:
        bfa_sm_set_state(lps, bfa_lps_sm_init);
        bfa_reqq_wcancel(&lps->wqe);

        /* Let the vport module know about this event */
        bfa_lps_cvl_event(lps);
        bfa_plog_str(lps->bfa->plog, BFA_PL_MID_LPS,
            BFA_PL_EID_FIP_FCF_CVL, 0, "FCF Clear Virt. Link Rx");
        break;

    case BFA_LPS_SM_OFFLINE:
    case BFA_LPS_SM_DELETE:
        bfa_sm_set_state(lps, bfa_lps_sm_init);
        bfa_reqq_wcancel(&lps->wqe);
        break;

    default:
        bfa_sm_fault(lps->bfa, event);
    }
}

/*
 * logout in progress - awaiting firmware response
 */
static void
bfa_lps_sm_logout(struct bfa_lps_s *lps, enum bfa_lps_event event)
{
    bfa_trc(lps->bfa, lps->bfa_tag);
    bfa_trc(lps->bfa, event);

    switch (event) {
    case BFA_LPS_SM_FWRSP:
    case BFA_LPS_SM_OFFLINE:
        bfa_sm_set_state(lps, bfa_lps_sm_init);
        bfa_lps_logout_comp(lps);
        break;

    case BFA_LPS_SM_DELETE:
        bfa_sm_set_state(lps, bfa_lps_sm_init);
        break;

    default:
        bfa_sm_fault(lps->bfa, event);
    }
}

/*
 * logout pending -- awaiting space in request queue
 */
static void
bfa_lps_sm_logowait(struct bfa_lps_s *lps, enum bfa_lps_event event)
{
    bfa_trc(lps->bfa, lps->bfa_tag);
    bfa_trc(lps->bfa, event);

    switch (event) {
    case BFA_LPS_SM_RESUME:
        bfa_sm_set_state(lps, bfa_lps_sm_logout);
        bfa_lps_send_logout(lps);
        break;

    case BFA_LPS_SM_OFFLINE:
    case BFA_LPS_SM_DELETE:
        bfa_sm_set_state(lps, bfa_lps_sm_init);
        bfa_reqq_wcancel(&lps->wqe);
        break;

    default:
        bfa_sm_fault(lps->bfa, event);
    }
}



/*
 *  lps_pvt BFA LPS private functions
 */

/*
 * return memory requirement
 */
static void
bfa_lps_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo,
        struct bfa_s *bfa)
{
    struct bfa_mem_kva_s *lps_kva = BFA_MEM_LPS_KVA(bfa);

    if (cfg->drvcfg.min_cfg)
        bfa_mem_kva_setup(minfo, lps_kva,
            sizeof(struct bfa_lps_s) * BFA_LPS_MIN_LPORTS);
    else
        bfa_mem_kva_setup(minfo, lps_kva,
            sizeof(struct bfa_lps_s) * BFA_LPS_MAX_LPORTS);
}

/*
 * bfa module attach at initialization time
 */
static void
bfa_lps_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
    struct bfa_pcidev_s *pcidev)
{
    struct bfa_lps_mod_s    *mod = BFA_LPS_MOD(bfa);
    struct bfa_lps_s    *lps;
    int         i;

    mod->num_lps = BFA_LPS_MAX_LPORTS;
    if (cfg->drvcfg.min_cfg)
        mod->num_lps = BFA_LPS_MIN_LPORTS;
    else
        mod->num_lps = BFA_LPS_MAX_LPORTS;
    mod->lps_arr = lps = (struct bfa_lps_s *) bfa_mem_kva_curp(mod);

    bfa_mem_kva_curp(mod) += mod->num_lps * sizeof(struct bfa_lps_s);

    INIT_LIST_HEAD(&mod->lps_free_q);
    INIT_LIST_HEAD(&mod->lps_active_q);
    INIT_LIST_HEAD(&mod->lps_login_q);

    for (i = 0; i < mod->num_lps; i++, lps++) {
        lps->bfa    = bfa;
        lps->bfa_tag    = (u8) i;
        lps->reqq   = BFA_REQQ_LPS;
        bfa_reqq_winit(&lps->wqe, bfa_lps_reqq_resume, lps);
        list_add_tail(&lps->qe, &mod->lps_free_q);
    }
}

static void
bfa_lps_detach(struct bfa_s *bfa)
{
}

static void
bfa_lps_start(struct bfa_s *bfa)
{
}

static void
bfa_lps_stop(struct bfa_s *bfa)
{
}

/*
 * IOC in disabled state -- consider all lps offline
 */
static void
bfa_lps_iocdisable(struct bfa_s *bfa)
{
    struct bfa_lps_mod_s    *mod = BFA_LPS_MOD(bfa);
    struct bfa_lps_s    *lps;
    struct list_head        *qe, *qen;

    list_for_each_safe(qe, qen, &mod->lps_active_q) {
        lps = (struct bfa_lps_s *) qe;
        bfa_sm_send_event(lps, BFA_LPS_SM_OFFLINE);
    }
    list_for_each_safe(qe, qen, &mod->lps_login_q) {
        lps = (struct bfa_lps_s *) qe;
        bfa_sm_send_event(lps, BFA_LPS_SM_OFFLINE);
    }
    list_splice_tail_init(&mod->lps_login_q, &mod->lps_active_q);
}

/*
 * Firmware login response
 */
static void
bfa_lps_login_rsp(struct bfa_s *bfa, struct bfi_lps_login_rsp_s *rsp)
{
    struct bfa_lps_mod_s    *mod = BFA_LPS_MOD(bfa);
    struct bfa_lps_s    *lps;

    WARN_ON(rsp->bfa_tag >= mod->num_lps);
    lps = BFA_LPS_FROM_TAG(mod, rsp->bfa_tag);

    lps->status = rsp->status;
    switch (rsp->status) {
    case BFA_STATUS_OK:
        lps->fw_tag = rsp->fw_tag;
        lps->fport  = rsp->f_port;
        if (lps->fport)
            lps->lp_pid = rsp->lp_pid;
        lps->npiv_en    = rsp->npiv_en;
        lps->pr_bbcred  = be16_to_cpu(rsp->bb_credit);
        lps->pr_pwwn    = rsp->port_name;
        lps->pr_nwwn    = rsp->node_name;
        lps->auth_req   = rsp->auth_req;
        lps->lp_mac = rsp->lp_mac;
        lps->brcd_switch = rsp->brcd_switch;
        lps->fcf_mac    = rsp->fcf_mac;
        lps->pr_bbscn   = rsp->bb_scn;

        break;

    case BFA_STATUS_FABRIC_RJT:
        lps->lsrjt_rsn = rsp->lsrjt_rsn;
        lps->lsrjt_expl = rsp->lsrjt_expl;

        break;

    case BFA_STATUS_EPROTOCOL:
        lps->ext_status = rsp->ext_status;

        break;

    case BFA_STATUS_VPORT_MAX:
        if (rsp->ext_status)
            bfa_lps_no_res(lps, rsp->ext_status);
        break;

    default:
        /* Nothing to do with other status */
        break;
    }

    list_del(&lps->qe);
    list_add_tail(&lps->qe, &mod->lps_active_q);
    bfa_sm_send_event(lps, BFA_LPS_SM_FWRSP);
}

static void
bfa_lps_no_res(struct bfa_lps_s *first_lps, u8 count)
{
    struct bfa_s        *bfa = first_lps->bfa;
    struct bfa_lps_mod_s    *mod = BFA_LPS_MOD(bfa);
    struct list_head    *qe, *qe_next;
    struct bfa_lps_s    *lps;

    bfa_trc(bfa, count);

    qe = bfa_q_next(first_lps);

    while (count && qe) {
        qe_next = bfa_q_next(qe);
        lps = (struct bfa_lps_s *)qe;
        bfa_trc(bfa, lps->bfa_tag);
        lps->status = first_lps->status;
        list_del(&lps->qe);
        list_add_tail(&lps->qe, &mod->lps_active_q);
        bfa_sm_send_event(lps, BFA_LPS_SM_FWRSP);
        qe = qe_next;
        count--;
    }
}

/*
 * Firmware logout response
 */
static void
bfa_lps_logout_rsp(struct bfa_s *bfa, struct bfi_lps_logout_rsp_s *rsp)
{
    struct bfa_lps_mod_s    *mod = BFA_LPS_MOD(bfa);
    struct bfa_lps_s    *lps;

    WARN_ON(rsp->bfa_tag >= mod->num_lps);
    lps = BFA_LPS_FROM_TAG(mod, rsp->bfa_tag);

    bfa_sm_send_event(lps, BFA_LPS_SM_FWRSP);
}

/*
 * Firmware received a Clear virtual link request (for FCoE)
 */
static void
bfa_lps_rx_cvl_event(struct bfa_s *bfa, struct bfi_lps_cvl_event_s *cvl)
{
    struct bfa_lps_mod_s    *mod = BFA_LPS_MOD(bfa);
    struct bfa_lps_s    *lps;

    lps = BFA_LPS_FROM_TAG(mod, cvl->bfa_tag);

    bfa_sm_send_event(lps, BFA_LPS_SM_RX_CVL);
}

/*
 * Space is available in request queue, resume queueing request to firmware.
 */
static void
bfa_lps_reqq_resume(void *lps_arg)
{
    struct bfa_lps_s    *lps = lps_arg;

    bfa_sm_send_event(lps, BFA_LPS_SM_RESUME);
}

/*
 * lps is freed -- triggered by vport delete
 */
static void
bfa_lps_free(struct bfa_lps_s *lps)
{
    struct bfa_lps_mod_s    *mod = BFA_LPS_MOD(lps->bfa);

    lps->lp_pid = 0;
    list_del(&lps->qe);
    list_add_tail(&lps->qe, &mod->lps_free_q);
}

/*
 * send login request to firmware
 */
static void
bfa_lps_send_login(struct bfa_lps_s *lps)
{
    struct bfa_lps_mod_s    *mod = BFA_LPS_MOD(lps->bfa);
    struct bfi_lps_login_req_s  *m;

    m = bfa_reqq_next(lps->bfa, lps->reqq);
    WARN_ON(!m);

    bfi_h2i_set(m->mh, BFI_MC_LPS, BFI_LPS_H2I_LOGIN_REQ,
        bfa_fn_lpu(lps->bfa));

    m->bfa_tag  = lps->bfa_tag;
    m->alpa     = lps->alpa;
    m->pdu_size = cpu_to_be16(lps->pdusz);
    m->pwwn     = lps->pwwn;
    m->nwwn     = lps->nwwn;
    m->fdisc    = lps->fdisc;
    m->auth_en  = lps->auth_en;
    m->bb_scn   = lps->bb_scn;

    bfa_reqq_produce(lps->bfa, lps->reqq, m->mh);
    list_del(&lps->qe);
    list_add_tail(&lps->qe, &mod->lps_login_q);
}

/*
 * send logout request to firmware
 */
static void
bfa_lps_send_logout(struct bfa_lps_s *lps)
{
    struct bfi_lps_logout_req_s *m;

    m = bfa_reqq_next(lps->bfa, lps->reqq);
    WARN_ON(!m);

    bfi_h2i_set(m->mh, BFI_MC_LPS, BFI_LPS_H2I_LOGOUT_REQ,
        bfa_fn_lpu(lps->bfa));

    m->fw_tag = lps->fw_tag;
    m->port_name = lps->pwwn;
    bfa_reqq_produce(lps->bfa, lps->reqq, m->mh);
}

/*
 * send n2n pid set request to firmware
 */
static void
bfa_lps_send_set_n2n_pid(struct bfa_lps_s *lps)
{
    struct bfi_lps_n2n_pid_req_s *m;

    m = bfa_reqq_next(lps->bfa, lps->reqq);
    WARN_ON(!m);

    bfi_h2i_set(m->mh, BFI_MC_LPS, BFI_LPS_H2I_N2N_PID_REQ,
        bfa_fn_lpu(lps->bfa));

    m->fw_tag = lps->fw_tag;
    m->lp_pid = lps->lp_pid;
    bfa_reqq_produce(lps->bfa, lps->reqq, m->mh);
}

/*
 * Indirect login completion handler for non-fcs
 */
static void
bfa_lps_login_comp_cb(void *arg, bfa_boolean_t complete)
{
    struct bfa_lps_s *lps   = arg;

    if (!complete)
        return;

    if (lps->fdisc)
        bfa_cb_lps_fdisc_comp(lps->bfa->bfad, lps->uarg, lps->status);
    else
        bfa_cb_lps_flogi_comp(lps->bfa->bfad, lps->uarg, lps->status);
}

/*
 * Login completion handler -- direct call for fcs, queue for others
 */
static void
bfa_lps_login_comp(struct bfa_lps_s *lps)
{
    if (!lps->bfa->fcs) {
        bfa_cb_queue(lps->bfa, &lps->hcb_qe, bfa_lps_login_comp_cb,
            lps);
        return;
    }

    if (lps->fdisc)
        bfa_cb_lps_fdisc_comp(lps->bfa->bfad, lps->uarg, lps->status);
    else
        bfa_cb_lps_flogi_comp(lps->bfa->bfad, lps->uarg, lps->status);
}

/*
 * Indirect logout completion handler for non-fcs
 */
static void
bfa_lps_logout_comp_cb(void *arg, bfa_boolean_t complete)
{
    struct bfa_lps_s *lps   = arg;

    if (!complete)
        return;

    if (lps->fdisc)
        bfa_cb_lps_fdisclogo_comp(lps->bfa->bfad, lps->uarg);
    else
        bfa_cb_lps_flogo_comp(lps->bfa->bfad, lps->uarg);
}

/*
 * Logout completion handler -- direct call for fcs, queue for others
 */
static void
bfa_lps_logout_comp(struct bfa_lps_s *lps)
{
    if (!lps->bfa->fcs) {
        bfa_cb_queue(lps->bfa, &lps->hcb_qe, bfa_lps_logout_comp_cb,
            lps);
        return;
    }
    if (lps->fdisc)
        bfa_cb_lps_fdisclogo_comp(lps->bfa->bfad, lps->uarg);
}

/*
 * Clear virtual link completion handler for non-fcs
 */
static void
bfa_lps_cvl_event_cb(void *arg, bfa_boolean_t complete)
{
    struct bfa_lps_s *lps   = arg;

    if (!complete)
        return;

    /* Clear virtual link to base port will result in link down */
    if (lps->fdisc)
        bfa_cb_lps_cvl_event(lps->bfa->bfad, lps->uarg);
}

/*
 * Received Clear virtual link event --direct call for fcs,
 * queue for others
 */
static void
bfa_lps_cvl_event(struct bfa_lps_s *lps)
{
    if (!lps->bfa->fcs) {
        bfa_cb_queue(lps->bfa, &lps->hcb_qe, bfa_lps_cvl_event_cb,
            lps);
        return;
    }

    /* Clear virtual link to base port will result in link down */
    if (lps->fdisc)
        bfa_cb_lps_cvl_event(lps->bfa->bfad, lps->uarg);
}



/*
 *  lps_public BFA LPS public functions
 */

u32
bfa_lps_get_max_vport(struct bfa_s *bfa)
{
    if (bfa_ioc_devid(&bfa->ioc) == BFA_PCI_DEVICE_ID_CT)
        return BFA_LPS_MAX_VPORTS_SUPP_CT;
    else
        return BFA_LPS_MAX_VPORTS_SUPP_CB;
}

/*
 * Allocate a lport srvice tag.
 */
struct bfa_lps_s  *
bfa_lps_alloc(struct bfa_s *bfa)
{
    struct bfa_lps_mod_s    *mod = BFA_LPS_MOD(bfa);
    struct bfa_lps_s    *lps = NULL;

    bfa_q_deq(&mod->lps_free_q, &lps);

    if (lps == NULL)
        return NULL;

    list_add_tail(&lps->qe, &mod->lps_active_q);

    bfa_sm_set_state(lps, bfa_lps_sm_init);
    return lps;
}

/*
 * Free lport service tag. This can be called anytime after an alloc.
 * No need to wait for any pending login/logout completions.
 */
void
bfa_lps_delete(struct bfa_lps_s *lps)
{
    bfa_sm_send_event(lps, BFA_LPS_SM_DELETE);
}

/*
 * Initiate a lport login.
 */
void
bfa_lps_flogi(struct bfa_lps_s *lps, void *uarg, u8 alpa, u16 pdusz,
    wwn_t pwwn, wwn_t nwwn, bfa_boolean_t auth_en, uint8_t bb_scn)
{
    lps->uarg   = uarg;
    lps->alpa   = alpa;
    lps->pdusz  = pdusz;
    lps->pwwn   = pwwn;
    lps->nwwn   = nwwn;
    lps->fdisc  = BFA_FALSE;
    lps->auth_en    = auth_en;
    lps->bb_scn = bb_scn;
    bfa_sm_send_event(lps, BFA_LPS_SM_LOGIN);
}

/*
 * Initiate a lport fdisc login.
 */
void
bfa_lps_fdisc(struct bfa_lps_s *lps, void *uarg, u16 pdusz, wwn_t pwwn,
    wwn_t nwwn)
{
    lps->uarg   = uarg;
    lps->alpa   = 0;
    lps->pdusz  = pdusz;
    lps->pwwn   = pwwn;
    lps->nwwn   = nwwn;
    lps->fdisc  = BFA_TRUE;
    lps->auth_en    = BFA_FALSE;
    bfa_sm_send_event(lps, BFA_LPS_SM_LOGIN);
}


/*
 * Initiate a lport FDSIC logout.
 */
void
bfa_lps_fdisclogo(struct bfa_lps_s *lps)
{
    bfa_sm_send_event(lps, BFA_LPS_SM_LOGOUT);
}

u8
bfa_lps_get_fwtag(struct bfa_s *bfa, u8 lp_tag)
{
    struct bfa_lps_mod_s    *mod = BFA_LPS_MOD(bfa);

    return BFA_LPS_FROM_TAG(mod, lp_tag)->fw_tag;
}

/*
 * Return lport services tag given the pid
 */
u8
bfa_lps_get_tag_from_pid(struct bfa_s *bfa, u32 pid)
{
    struct bfa_lps_mod_s    *mod = BFA_LPS_MOD(bfa);
    struct bfa_lps_s    *lps;
    int         i;

    for (i = 0, lps = mod->lps_arr; i < mod->num_lps; i++, lps++) {
        if (lps->lp_pid == pid)
            return lps->bfa_tag;
    }

    /* Return base port tag anyway */
    return 0;
}


/*
 * return port id assigned to the base lport
 */
u32
bfa_lps_get_base_pid(struct bfa_s *bfa)
{
    struct bfa_lps_mod_s    *mod = BFA_LPS_MOD(bfa);

    return BFA_LPS_FROM_TAG(mod, 0)->lp_pid;
}

/*
 * Set PID in case of n2n (which is assigned during PLOGI)
 */
void
bfa_lps_set_n2n_pid(struct bfa_lps_s *lps, uint32_t n2n_pid)
{
    bfa_trc(lps->bfa, lps->bfa_tag);
    bfa_trc(lps->bfa, n2n_pid);

    lps->lp_pid = n2n_pid;
    bfa_sm_send_event(lps, BFA_LPS_SM_SET_N2N_PID);
}

/*
 * LPS firmware message class handler.
 */
void
bfa_lps_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
{
    union bfi_lps_i2h_msg_u msg;

    bfa_trc(bfa, m->mhdr.msg_id);
    msg.msg = m;

    switch (m->mhdr.msg_id) {
    case BFI_LPS_I2H_LOGIN_RSP:
        bfa_lps_login_rsp(bfa, msg.login_rsp);
        break;

    case BFI_LPS_I2H_LOGOUT_RSP:
        bfa_lps_logout_rsp(bfa, msg.logout_rsp);
        break;

    case BFI_LPS_I2H_CVL_EVENT:
        bfa_lps_rx_cvl_event(bfa, msg.cvl_event);
        break;

    default:
        bfa_trc(bfa, m->mhdr.msg_id);
        WARN_ON(1);
    }
}

static void
bfa_fcport_aen_post(struct bfa_fcport_s *fcport, enum bfa_port_aen_event event)
{
    struct bfad_s *bfad = (struct bfad_s *)fcport->bfa->bfad;
    struct bfa_aen_entry_s  *aen_entry;

    bfad_get_aen_entry(bfad, aen_entry);
    if (!aen_entry)
        return;

    aen_entry->aen_data.port.ioc_type = bfa_get_type(fcport->bfa);
    aen_entry->aen_data.port.pwwn = fcport->pwwn;

    /* Send the AEN notification */
    bfad_im_post_vendor_event(aen_entry, bfad, ++fcport->bfa->bfa_aen_seq,
                  BFA_AEN_CAT_PORT, event);
}

/*
 * FC PORT state machine functions
 */
static void
bfa_fcport_sm_uninit(struct bfa_fcport_s *fcport,
            enum bfa_fcport_sm_event event)
{
    bfa_trc(fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_SM_START:
        /*
         * Start event after IOC is configured and BFA is started.
         */
        fcport->use_flash_cfg = BFA_TRUE;

        if (bfa_fcport_send_enable(fcport)) {
            bfa_trc(fcport->bfa, BFA_TRUE);
            bfa_sm_set_state(fcport, bfa_fcport_sm_enabling);
        } else {
            bfa_trc(fcport->bfa, BFA_FALSE);
            bfa_sm_set_state(fcport,
                    bfa_fcport_sm_enabling_qwait);
        }
        break;

    case BFA_FCPORT_SM_ENABLE:
        /*
         * Port is persistently configured to be in enabled state. Do
         * not change state. Port enabling is done when START event is
         * received.
         */
        break;

    case BFA_FCPORT_SM_DISABLE:
        /*
         * If a port is persistently configured to be disabled, the
         * first event will a port disable request.
         */
        bfa_sm_set_state(fcport, bfa_fcport_sm_disabled);
        break;

    case BFA_FCPORT_SM_HWFAIL:
        bfa_sm_set_state(fcport, bfa_fcport_sm_iocdown);
        break;

    default:
        bfa_sm_fault(fcport->bfa, event);
    }
}

static void
bfa_fcport_sm_enabling_qwait(struct bfa_fcport_s *fcport,
                enum bfa_fcport_sm_event event)
{
    char pwwn_buf[BFA_STRING_32];
    struct bfad_s *bfad = (struct bfad_s *)fcport->bfa->bfad;
    bfa_trc(fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_SM_QRESUME:
        bfa_sm_set_state(fcport, bfa_fcport_sm_enabling);
        bfa_fcport_send_enable(fcport);
        break;

    case BFA_FCPORT_SM_STOP:
        bfa_reqq_wcancel(&fcport->reqq_wait);
        bfa_sm_set_state(fcport, bfa_fcport_sm_stopped);
        break;

    case BFA_FCPORT_SM_ENABLE:
        /*
         * Already enable is in progress.
         */
        break;

    case BFA_FCPORT_SM_DISABLE:
        /*
         * Just send disable request to firmware when room becomes
         * available in request queue.
         */
        bfa_sm_set_state(fcport, bfa_fcport_sm_disabled);
        bfa_reqq_wcancel(&fcport->reqq_wait);
        bfa_plog_str(fcport->bfa->plog, BFA_PL_MID_HAL,
                BFA_PL_EID_PORT_DISABLE, 0, "Port Disable");
        wwn2str(pwwn_buf, fcport->pwwn);
        BFA_LOG(KERN_INFO, bfad, bfa_log_level,
            "Base port disabled: WWN = %s\n", pwwn_buf);
        bfa_fcport_aen_post(fcport, BFA_PORT_AEN_DISABLE);
        break;

    case BFA_FCPORT_SM_LINKUP:
    case BFA_FCPORT_SM_LINKDOWN:
        /*
         * Possible to get link events when doing back-to-back
         * enable/disables.
         */
        break;

    case BFA_FCPORT_SM_HWFAIL:
        bfa_reqq_wcancel(&fcport->reqq_wait);
        bfa_sm_set_state(fcport, bfa_fcport_sm_iocdown);
        break;

    case BFA_FCPORT_SM_FAA_MISCONFIG:
        bfa_fcport_reset_linkinfo(fcport);
        bfa_fcport_aen_post(fcport, BFA_PORT_AEN_DISCONNECT);
        bfa_sm_set_state(fcport, bfa_fcport_sm_faa_misconfig);
        break;

    default:
        bfa_sm_fault(fcport->bfa, event);
    }
}

static void
bfa_fcport_sm_enabling(struct bfa_fcport_s *fcport,
                        enum bfa_fcport_sm_event event)
{
    char pwwn_buf[BFA_STRING_32];
    struct bfad_s *bfad = (struct bfad_s *)fcport->bfa->bfad;
    bfa_trc(fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_SM_FWRSP:
    case BFA_FCPORT_SM_LINKDOWN:
        bfa_sm_set_state(fcport, bfa_fcport_sm_linkdown);
        break;

    case BFA_FCPORT_SM_LINKUP:
        bfa_fcport_update_linkinfo(fcport);
        bfa_sm_set_state(fcport, bfa_fcport_sm_linkup);

        WARN_ON(!fcport->event_cbfn);
        bfa_fcport_scn(fcport, BFA_PORT_LINKUP, BFA_FALSE);
        break;

    case BFA_FCPORT_SM_ENABLE:
        /*
         * Already being enabled.
         */
        break;

    case BFA_FCPORT_SM_DISABLE:
        if (bfa_fcport_send_disable(fcport))
            bfa_sm_set_state(fcport, bfa_fcport_sm_disabling);
        else
            bfa_sm_set_state(fcport,
                     bfa_fcport_sm_disabling_qwait);

        bfa_plog_str(fcport->bfa->plog, BFA_PL_MID_HAL,
                BFA_PL_EID_PORT_DISABLE, 0, "Port Disable");
        wwn2str(pwwn_buf, fcport->pwwn);
        BFA_LOG(KERN_INFO, bfad, bfa_log_level,
            "Base port disabled: WWN = %s\n", pwwn_buf);
        bfa_fcport_aen_post(fcport, BFA_PORT_AEN_DISABLE);
        break;

    case BFA_FCPORT_SM_STOP:
        bfa_sm_set_state(fcport, bfa_fcport_sm_stopped);
        break;

    case BFA_FCPORT_SM_HWFAIL:
        bfa_sm_set_state(fcport, bfa_fcport_sm_iocdown);
        break;

    case BFA_FCPORT_SM_FAA_MISCONFIG:
        bfa_fcport_reset_linkinfo(fcport);
        bfa_fcport_aen_post(fcport, BFA_PORT_AEN_DISCONNECT);
        bfa_sm_set_state(fcport, bfa_fcport_sm_faa_misconfig);
        break;

    default:
        bfa_sm_fault(fcport->bfa, event);
    }
}

static void
bfa_fcport_sm_linkdown(struct bfa_fcport_s *fcport,
                        enum bfa_fcport_sm_event event)
{
    struct bfi_fcport_event_s *pevent = fcport->event_arg.i2hmsg.event;
    char pwwn_buf[BFA_STRING_32];
    struct bfad_s *bfad = (struct bfad_s *)fcport->bfa->bfad;

    bfa_trc(fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_SM_LINKUP:
        bfa_fcport_update_linkinfo(fcport);
        bfa_sm_set_state(fcport, bfa_fcport_sm_linkup);
        WARN_ON(!fcport->event_cbfn);
        bfa_plog_str(fcport->bfa->plog, BFA_PL_MID_HAL,
                BFA_PL_EID_PORT_ST_CHANGE, 0, "Port Linkup");
        if (!bfa_ioc_get_fcmode(&fcport->bfa->ioc)) {

            bfa_trc(fcport->bfa,
                pevent->link_state.attr.vc_fcf.fcf.fipenabled);
            bfa_trc(fcport->bfa,
                pevent->link_state.attr.vc_fcf.fcf.fipfailed);

            if (pevent->link_state.attr.vc_fcf.fcf.fipfailed)
                bfa_plog_str(fcport->bfa->plog, BFA_PL_MID_HAL,
                    BFA_PL_EID_FIP_FCF_DISC, 0,
                    "FIP FCF Discovery Failed");
            else
                bfa_plog_str(fcport->bfa->plog, BFA_PL_MID_HAL,
                    BFA_PL_EID_FIP_FCF_DISC, 0,
                    "FIP FCF Discovered");
        }

        bfa_fcport_scn(fcport, BFA_PORT_LINKUP, BFA_FALSE);
        wwn2str(pwwn_buf, fcport->pwwn);
        BFA_LOG(KERN_INFO, bfad, bfa_log_level,
            "Base port online: WWN = %s\n", pwwn_buf);
        bfa_fcport_aen_post(fcport, BFA_PORT_AEN_ONLINE);

        /* If QoS is enabled and it is not online, send AEN */
        if (fcport->cfg.qos_enabled &&
            fcport->qos_attr.state != BFA_QOS_ONLINE)
            bfa_fcport_aen_post(fcport, BFA_PORT_AEN_QOS_NEG);
        break;

    case BFA_FCPORT_SM_LINKDOWN:
        /*
         * Possible to get link down event.
         */
        break;

    case BFA_FCPORT_SM_ENABLE:
        /*
         * Already enabled.
         */
        break;

    case BFA_FCPORT_SM_DISABLE:
        if (bfa_fcport_send_disable(fcport))
            bfa_sm_set_state(fcport, bfa_fcport_sm_disabling);
        else
            bfa_sm_set_state(fcport,
                     bfa_fcport_sm_disabling_qwait);

        bfa_plog_str(fcport->bfa->plog, BFA_PL_MID_HAL,
                BFA_PL_EID_PORT_DISABLE, 0, "Port Disable");
        wwn2str(pwwn_buf, fcport->pwwn);
        BFA_LOG(KERN_INFO, bfad, bfa_log_level,
            "Base port disabled: WWN = %s\n", pwwn_buf);
        bfa_fcport_aen_post(fcport, BFA_PORT_AEN_DISABLE);
        break;

    case BFA_FCPORT_SM_STOP:
        bfa_sm_set_state(fcport, bfa_fcport_sm_stopped);
        break;

    case BFA_FCPORT_SM_HWFAIL:
        bfa_sm_set_state(fcport, bfa_fcport_sm_iocdown);
        break;

    case BFA_FCPORT_SM_FAA_MISCONFIG:
        bfa_fcport_reset_linkinfo(fcport);
        bfa_fcport_aen_post(fcport, BFA_PORT_AEN_DISCONNECT);
        bfa_sm_set_state(fcport, bfa_fcport_sm_faa_misconfig);
        break;

    default:
        bfa_sm_fault(fcport->bfa, event);
    }
}

static void
bfa_fcport_sm_linkup(struct bfa_fcport_s *fcport,
    enum bfa_fcport_sm_event event)
{
    char pwwn_buf[BFA_STRING_32];
    struct bfad_s *bfad = (struct bfad_s *)fcport->bfa->bfad;

    bfa_trc(fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_SM_ENABLE:
        /*
         * Already enabled.
         */
        break;

    case BFA_FCPORT_SM_DISABLE:
        if (bfa_fcport_send_disable(fcport))
            bfa_sm_set_state(fcport, bfa_fcport_sm_disabling);
        else
            bfa_sm_set_state(fcport,
                     bfa_fcport_sm_disabling_qwait);

        bfa_fcport_reset_linkinfo(fcport);
        bfa_fcport_scn(fcport, BFA_PORT_LINKDOWN, BFA_FALSE);
        bfa_plog_str(fcport->bfa->plog, BFA_PL_MID_HAL,
                BFA_PL_EID_PORT_DISABLE, 0, "Port Disable");
        wwn2str(pwwn_buf, fcport->pwwn);
        BFA_LOG(KERN_INFO, bfad, bfa_log_level,
            "Base port offline: WWN = %s\n", pwwn_buf);
        bfa_fcport_aen_post(fcport, BFA_PORT_AEN_OFFLINE);
        BFA_LOG(KERN_INFO, bfad, bfa_log_level,
            "Base port disabled: WWN = %s\n", pwwn_buf);
        bfa_fcport_aen_post(fcport, BFA_PORT_AEN_DISABLE);
        break;

    case BFA_FCPORT_SM_LINKDOWN:
        bfa_sm_set_state(fcport, bfa_fcport_sm_linkdown);
        bfa_fcport_reset_linkinfo(fcport);
        bfa_fcport_scn(fcport, BFA_PORT_LINKDOWN, BFA_FALSE);
        bfa_plog_str(fcport->bfa->plog, BFA_PL_MID_HAL,
                BFA_PL_EID_PORT_ST_CHANGE, 0, "Port Linkdown");
        wwn2str(pwwn_buf, fcport->pwwn);
        if (BFA_PORT_IS_DISABLED(fcport->bfa)) {
            BFA_LOG(KERN_INFO, bfad, bfa_log_level,
                "Base port offline: WWN = %s\n", pwwn_buf);
            bfa_fcport_aen_post(fcport, BFA_PORT_AEN_OFFLINE);
        } else {
            BFA_LOG(KERN_ERR, bfad, bfa_log_level,
                "Base port (WWN = %s) "
                "lost fabric connectivity\n", pwwn_buf);
            bfa_fcport_aen_post(fcport, BFA_PORT_AEN_DISCONNECT);
        }
        break;

    case BFA_FCPORT_SM_STOP:
        bfa_sm_set_state(fcport, bfa_fcport_sm_stopped);
        bfa_fcport_reset_linkinfo(fcport);
        wwn2str(pwwn_buf, fcport->pwwn);
        if (BFA_PORT_IS_DISABLED(fcport->bfa)) {
            BFA_LOG(KERN_INFO, bfad, bfa_log_level,
                "Base port offline: WWN = %s\n", pwwn_buf);
            bfa_fcport_aen_post(fcport, BFA_PORT_AEN_OFFLINE);
        } else {
            BFA_LOG(KERN_ERR, bfad, bfa_log_level,
                "Base port (WWN = %s) "
                "lost fabric connectivity\n", pwwn_buf);
            bfa_fcport_aen_post(fcport, BFA_PORT_AEN_DISCONNECT);
        }
        break;

    case BFA_FCPORT_SM_HWFAIL:
        bfa_sm_set_state(fcport, bfa_fcport_sm_iocdown);
        bfa_fcport_reset_linkinfo(fcport);
        bfa_fcport_scn(fcport, BFA_PORT_LINKDOWN, BFA_FALSE);
        wwn2str(pwwn_buf, fcport->pwwn);
        if (BFA_PORT_IS_DISABLED(fcport->bfa)) {
            BFA_LOG(KERN_INFO, bfad, bfa_log_level,
                "Base port offline: WWN = %s\n", pwwn_buf);
            bfa_fcport_aen_post(fcport, BFA_PORT_AEN_OFFLINE);
        } else {
            BFA_LOG(KERN_ERR, bfad, bfa_log_level,
                "Base port (WWN = %s) "
                "lost fabric connectivity\n", pwwn_buf);
            bfa_fcport_aen_post(fcport, BFA_PORT_AEN_DISCONNECT);
        }
        break;

    case BFA_FCPORT_SM_FAA_MISCONFIG:
        bfa_fcport_reset_linkinfo(fcport);
        bfa_fcport_aen_post(fcport, BFA_PORT_AEN_DISCONNECT);
        bfa_sm_set_state(fcport, bfa_fcport_sm_faa_misconfig);
        break;

    default:
        bfa_sm_fault(fcport->bfa, event);
    }
}

static void
bfa_fcport_sm_disabling_qwait(struct bfa_fcport_s *fcport,
                 enum bfa_fcport_sm_event event)
{
    bfa_trc(fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_SM_QRESUME:
        bfa_sm_set_state(fcport, bfa_fcport_sm_disabling);
        bfa_fcport_send_disable(fcport);
        break;

    case BFA_FCPORT_SM_STOP:
        bfa_sm_set_state(fcport, bfa_fcport_sm_stopped);
        bfa_reqq_wcancel(&fcport->reqq_wait);
        break;

    case BFA_FCPORT_SM_ENABLE:
        bfa_sm_set_state(fcport, bfa_fcport_sm_toggling_qwait);
        break;

    case BFA_FCPORT_SM_DISABLE:
        /*
         * Already being disabled.
         */
        break;

    case BFA_FCPORT_SM_LINKUP:
    case BFA_FCPORT_SM_LINKDOWN:
        /*
         * Possible to get link events when doing back-to-back
         * enable/disables.
         */
        break;

    case BFA_FCPORT_SM_HWFAIL:
        bfa_sm_set_state(fcport, bfa_fcport_sm_iocfail);
        bfa_reqq_wcancel(&fcport->reqq_wait);
        break;

    case BFA_FCPORT_SM_FAA_MISCONFIG:
        bfa_fcport_reset_linkinfo(fcport);
        bfa_fcport_aen_post(fcport, BFA_PORT_AEN_DISCONNECT);
        bfa_sm_set_state(fcport, bfa_fcport_sm_faa_misconfig);
        break;

    default:
        bfa_sm_fault(fcport->bfa, event);
    }
}

static void
bfa_fcport_sm_toggling_qwait(struct bfa_fcport_s *fcport,
                 enum bfa_fcport_sm_event event)
{
    bfa_trc(fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_SM_QRESUME:
        bfa_sm_set_state(fcport, bfa_fcport_sm_disabling);
        bfa_fcport_send_disable(fcport);
        if (bfa_fcport_send_enable(fcport))
            bfa_sm_set_state(fcport, bfa_fcport_sm_enabling);
        else
            bfa_sm_set_state(fcport,
                     bfa_fcport_sm_enabling_qwait);
        break;

    case BFA_FCPORT_SM_STOP:
        bfa_sm_set_state(fcport, bfa_fcport_sm_stopped);
        bfa_reqq_wcancel(&fcport->reqq_wait);
        break;

    case BFA_FCPORT_SM_ENABLE:
        break;

    case BFA_FCPORT_SM_DISABLE:
        bfa_sm_set_state(fcport, bfa_fcport_sm_disabling_qwait);
        break;

    case BFA_FCPORT_SM_LINKUP:
    case BFA_FCPORT_SM_LINKDOWN:
        /*
         * Possible to get link events when doing back-to-back
         * enable/disables.
         */
        break;

    case BFA_FCPORT_SM_HWFAIL:
        bfa_sm_set_state(fcport, bfa_fcport_sm_iocfail);
        bfa_reqq_wcancel(&fcport->reqq_wait);
        break;

    default:
        bfa_sm_fault(fcport->bfa, event);
    }
}

static void
bfa_fcport_sm_disabling(struct bfa_fcport_s *fcport,
                        enum bfa_fcport_sm_event event)
{
    char pwwn_buf[BFA_STRING_32];
    struct bfad_s *bfad = (struct bfad_s *)fcport->bfa->bfad;
    bfa_trc(fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_SM_FWRSP:
        bfa_sm_set_state(fcport, bfa_fcport_sm_disabled);
        break;

    case BFA_FCPORT_SM_DISABLE:
        /*
         * Already being disabled.
         */
        break;

    case BFA_FCPORT_SM_ENABLE:
        if (bfa_fcport_send_enable(fcport))
            bfa_sm_set_state(fcport, bfa_fcport_sm_enabling);
        else
            bfa_sm_set_state(fcport,
                     bfa_fcport_sm_enabling_qwait);

        bfa_plog_str(fcport->bfa->plog, BFA_PL_MID_HAL,
                BFA_PL_EID_PORT_ENABLE, 0, "Port Enable");
        wwn2str(pwwn_buf, fcport->pwwn);
        BFA_LOG(KERN_INFO, bfad, bfa_log_level,
            "Base port enabled: WWN = %s\n", pwwn_buf);
        bfa_fcport_aen_post(fcport, BFA_PORT_AEN_ENABLE);
        break;

    case BFA_FCPORT_SM_STOP:
        bfa_sm_set_state(fcport, bfa_fcport_sm_stopped);
        break;

    case BFA_FCPORT_SM_LINKUP:
    case BFA_FCPORT_SM_LINKDOWN:
        /*
         * Possible to get link events when doing back-to-back
         * enable/disables.
         */
        break;

    case BFA_FCPORT_SM_HWFAIL:
        bfa_sm_set_state(fcport, bfa_fcport_sm_iocfail);
        break;

    default:
        bfa_sm_fault(fcport->bfa, event);
    }
}

static void
bfa_fcport_sm_disabled(struct bfa_fcport_s *fcport,
                        enum bfa_fcport_sm_event event)
{
    char pwwn_buf[BFA_STRING_32];
    struct bfad_s *bfad = (struct bfad_s *)fcport->bfa->bfad;
    bfa_trc(fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_SM_START:
        /*
         * Ignore start event for a port that is disabled.
         */
        break;

    case BFA_FCPORT_SM_STOP:
        bfa_sm_set_state(fcport, bfa_fcport_sm_stopped);
        break;

    case BFA_FCPORT_SM_ENABLE:
        if (bfa_fcport_send_enable(fcport))
            bfa_sm_set_state(fcport, bfa_fcport_sm_enabling);
        else
            bfa_sm_set_state(fcport,
                     bfa_fcport_sm_enabling_qwait);

        bfa_plog_str(fcport->bfa->plog, BFA_PL_MID_HAL,
                BFA_PL_EID_PORT_ENABLE, 0, "Port Enable");
        wwn2str(pwwn_buf, fcport->pwwn);
        BFA_LOG(KERN_INFO, bfad, bfa_log_level,
            "Base port enabled: WWN = %s\n", pwwn_buf);
        bfa_fcport_aen_post(fcport, BFA_PORT_AEN_ENABLE);
        break;

    case BFA_FCPORT_SM_DISABLE:
        /*
         * Already disabled.
         */
        break;

    case BFA_FCPORT_SM_HWFAIL:
        bfa_sm_set_state(fcport, bfa_fcport_sm_iocfail);
        break;

    case BFA_FCPORT_SM_DPORTENABLE:
        bfa_sm_set_state(fcport, bfa_fcport_sm_dport);
        break;

    default:
        bfa_sm_fault(fcport->bfa, event);
    }
}

static void
bfa_fcport_sm_stopped(struct bfa_fcport_s *fcport,
             enum bfa_fcport_sm_event event)
{
    bfa_trc(fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_SM_START:
        if (bfa_fcport_send_enable(fcport))
            bfa_sm_set_state(fcport, bfa_fcport_sm_enabling);
        else
            bfa_sm_set_state(fcport,
                     bfa_fcport_sm_enabling_qwait);
        break;

    default:
        /*
         * Ignore all other events.
         */
        ;
    }
}

/*
 * Port is enabled. IOC is down/failed.
 */
static void
bfa_fcport_sm_iocdown(struct bfa_fcport_s *fcport,
             enum bfa_fcport_sm_event event)
{
    bfa_trc(fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_SM_START:
        if (bfa_fcport_send_enable(fcport))
            bfa_sm_set_state(fcport, bfa_fcport_sm_enabling);
        else
            bfa_sm_set_state(fcport,
                     bfa_fcport_sm_enabling_qwait);
        break;

    default:
        /*
         * Ignore all events.
         */
        ;
    }
}

/*
 * Port is disabled. IOC is down/failed.
 */
static void
bfa_fcport_sm_iocfail(struct bfa_fcport_s *fcport,
             enum bfa_fcport_sm_event event)
{
    bfa_trc(fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_SM_START:
        bfa_sm_set_state(fcport, bfa_fcport_sm_disabled);
        break;

    case BFA_FCPORT_SM_ENABLE:
        bfa_sm_set_state(fcport, bfa_fcport_sm_iocdown);
        break;

    default:
        /*
         * Ignore all events.
         */
        ;
    }
}

static void
bfa_fcport_sm_dport(struct bfa_fcport_s *fcport, enum bfa_fcport_sm_event event)
{
    bfa_trc(fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_SM_DPORTENABLE:
    case BFA_FCPORT_SM_DISABLE:
    case BFA_FCPORT_SM_ENABLE:
    case BFA_FCPORT_SM_START:
        /*
         * Ignore event for a port that is dport
         */
        break;

    case BFA_FCPORT_SM_STOP:
        bfa_sm_set_state(fcport, bfa_fcport_sm_stopped);
        break;

    case BFA_FCPORT_SM_HWFAIL:
        bfa_sm_set_state(fcport, bfa_fcport_sm_iocfail);
        break;

    case BFA_FCPORT_SM_DPORTDISABLE:
        bfa_sm_set_state(fcport, bfa_fcport_sm_disabled);
        break;

    default:
        bfa_sm_fault(fcport->bfa, event);
    }
}

static void
bfa_fcport_sm_faa_misconfig(struct bfa_fcport_s *fcport,
                enum bfa_fcport_sm_event event)
{
    bfa_trc(fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_SM_DPORTENABLE:
    case BFA_FCPORT_SM_ENABLE:
    case BFA_FCPORT_SM_START:
        /*
         * Ignore event for a port as there is FAA misconfig
         */
        break;

    case BFA_FCPORT_SM_DISABLE:
        if (bfa_fcport_send_disable(fcport))
            bfa_sm_set_state(fcport, bfa_fcport_sm_disabling);
        else
            bfa_sm_set_state(fcport, bfa_fcport_sm_disabling_qwait);

        bfa_fcport_reset_linkinfo(fcport);
        bfa_fcport_scn(fcport, BFA_PORT_LINKDOWN, BFA_FALSE);
        bfa_plog_str(fcport->bfa->plog, BFA_PL_MID_HAL,
                 BFA_PL_EID_PORT_DISABLE, 0, "Port Disable");
        bfa_fcport_aen_post(fcport, BFA_PORT_AEN_DISABLE);
        break;

    case BFA_FCPORT_SM_STOP:
        bfa_sm_set_state(fcport, bfa_fcport_sm_stopped);
        break;

    case BFA_FCPORT_SM_HWFAIL:
        bfa_fcport_reset_linkinfo(fcport);
        bfa_fcport_scn(fcport, BFA_PORT_LINKDOWN, BFA_FALSE);
        bfa_sm_set_state(fcport, bfa_fcport_sm_iocdown);
        break;

    default:
        bfa_sm_fault(fcport->bfa, event);
    }
}

/*
 * Link state is down
 */
static void
bfa_fcport_ln_sm_dn(struct bfa_fcport_ln_s *ln,
        enum bfa_fcport_ln_sm_event event)
{
    bfa_trc(ln->fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_LN_SM_LINKUP:
        bfa_sm_set_state(ln, bfa_fcport_ln_sm_up_nf);
        bfa_fcport_queue_cb(ln, BFA_PORT_LINKUP);
        break;

    default:
        bfa_sm_fault(ln->fcport->bfa, event);
    }
}

/*
 * Link state is waiting for down notification
 */
static void
bfa_fcport_ln_sm_dn_nf(struct bfa_fcport_ln_s *ln,
        enum bfa_fcport_ln_sm_event event)
{
    bfa_trc(ln->fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_LN_SM_LINKUP:
        bfa_sm_set_state(ln, bfa_fcport_ln_sm_dn_up_nf);
        break;

    case BFA_FCPORT_LN_SM_NOTIFICATION:
        bfa_sm_set_state(ln, bfa_fcport_ln_sm_dn);
        break;

    default:
        bfa_sm_fault(ln->fcport->bfa, event);
    }
}

/*
 * Link state is waiting for down notification and there is a pending up
 */
static void
bfa_fcport_ln_sm_dn_up_nf(struct bfa_fcport_ln_s *ln,
        enum bfa_fcport_ln_sm_event event)
{
    bfa_trc(ln->fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_LN_SM_LINKDOWN:
        bfa_sm_set_state(ln, bfa_fcport_ln_sm_dn_nf);
        break;

    case BFA_FCPORT_LN_SM_NOTIFICATION:
        bfa_sm_set_state(ln, bfa_fcport_ln_sm_up_nf);
        bfa_fcport_queue_cb(ln, BFA_PORT_LINKUP);
        break;

    default:
        bfa_sm_fault(ln->fcport->bfa, event);
    }
}

/*
 * Link state is up
 */
static void
bfa_fcport_ln_sm_up(struct bfa_fcport_ln_s *ln,
        enum bfa_fcport_ln_sm_event event)
{
    bfa_trc(ln->fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_LN_SM_LINKDOWN:
        bfa_sm_set_state(ln, bfa_fcport_ln_sm_dn_nf);
        bfa_fcport_queue_cb(ln, BFA_PORT_LINKDOWN);
        break;

    default:
        bfa_sm_fault(ln->fcport->bfa, event);
    }
}

/*
 * Link state is waiting for up notification
 */
static void
bfa_fcport_ln_sm_up_nf(struct bfa_fcport_ln_s *ln,
        enum bfa_fcport_ln_sm_event event)
{
    bfa_trc(ln->fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_LN_SM_LINKDOWN:
        bfa_sm_set_state(ln, bfa_fcport_ln_sm_up_dn_nf);
        break;

    case BFA_FCPORT_LN_SM_NOTIFICATION:
        bfa_sm_set_state(ln, bfa_fcport_ln_sm_up);
        break;

    default:
        bfa_sm_fault(ln->fcport->bfa, event);
    }
}

/*
 * Link state is waiting for up notification and there is a pending down
 */
static void
bfa_fcport_ln_sm_up_dn_nf(struct bfa_fcport_ln_s *ln,
        enum bfa_fcport_ln_sm_event event)
{
    bfa_trc(ln->fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_LN_SM_LINKUP:
        bfa_sm_set_state(ln, bfa_fcport_ln_sm_up_dn_up_nf);
        break;

    case BFA_FCPORT_LN_SM_NOTIFICATION:
        bfa_sm_set_state(ln, bfa_fcport_ln_sm_dn_nf);
        bfa_fcport_queue_cb(ln, BFA_PORT_LINKDOWN);
        break;

    default:
        bfa_sm_fault(ln->fcport->bfa, event);
    }
}

/*
 * Link state is waiting for up notification and there are pending down and up
 */
static void
bfa_fcport_ln_sm_up_dn_up_nf(struct bfa_fcport_ln_s *ln,
            enum bfa_fcport_ln_sm_event event)
{
    bfa_trc(ln->fcport->bfa, event);

    switch (event) {
    case BFA_FCPORT_LN_SM_LINKDOWN:
        bfa_sm_set_state(ln, bfa_fcport_ln_sm_up_dn_nf);
        break;

    case BFA_FCPORT_LN_SM_NOTIFICATION:
        bfa_sm_set_state(ln, bfa_fcport_ln_sm_dn_up_nf);
        bfa_fcport_queue_cb(ln, BFA_PORT_LINKDOWN);
        break;

    default:
        bfa_sm_fault(ln->fcport->bfa, event);
    }
}

static void
__bfa_cb_fcport_event(void *cbarg, bfa_boolean_t complete)
{
    struct bfa_fcport_ln_s *ln = cbarg;

    if (complete)
        ln->fcport->event_cbfn(ln->fcport->event_cbarg, ln->ln_event);
    else
        bfa_sm_send_event(ln, BFA_FCPORT_LN_SM_NOTIFICATION);
}

/*
 * Send SCN notification to upper layers.
 * trunk - false if caller is fcport to ignore fcport event in trunked mode
 */
static void
bfa_fcport_scn(struct bfa_fcport_s *fcport, enum bfa_port_linkstate event,
    bfa_boolean_t trunk)
{
    if (fcport->cfg.trunked && !trunk)
        return;

    switch (event) {
    case BFA_PORT_LINKUP:
        bfa_sm_send_event(&fcport->ln, BFA_FCPORT_LN_SM_LINKUP);
        break;
    case BFA_PORT_LINKDOWN:
        bfa_sm_send_event(&fcport->ln, BFA_FCPORT_LN_SM_LINKDOWN);
        break;
    default:
        WARN_ON(1);
    }
}

static void
bfa_fcport_queue_cb(struct bfa_fcport_ln_s *ln, enum bfa_port_linkstate event)
{
    struct bfa_fcport_s *fcport = ln->fcport;

    if (fcport->bfa->fcs) {
        fcport->event_cbfn(fcport->event_cbarg, event);
        bfa_sm_send_event(ln, BFA_FCPORT_LN_SM_NOTIFICATION);
    } else {
        ln->ln_event = event;
        bfa_cb_queue(fcport->bfa, &ln->ln_qe,
            __bfa_cb_fcport_event, ln);
    }
}

#define FCPORT_STATS_DMA_SZ (BFA_ROUNDUP(sizeof(union bfa_fcport_stats_u), \
                            BFA_CACHELINE_SZ))

static void
bfa_fcport_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo,
           struct bfa_s *bfa)
{
    struct bfa_mem_dma_s *fcport_dma = BFA_MEM_FCPORT_DMA(bfa);

    bfa_mem_dma_setup(minfo, fcport_dma, FCPORT_STATS_DMA_SZ);
}

static void
bfa_fcport_qresume(void *cbarg)
{
    struct bfa_fcport_s *fcport = cbarg;

    bfa_sm_send_event(fcport, BFA_FCPORT_SM_QRESUME);
}

static void
bfa_fcport_mem_claim(struct bfa_fcport_s *fcport)
{
    struct bfa_mem_dma_s *fcport_dma = &fcport->fcport_dma;

    fcport->stats_kva = bfa_mem_dma_virt(fcport_dma);
    fcport->stats_pa  = bfa_mem_dma_phys(fcport_dma);
    fcport->stats = (union bfa_fcport_stats_u *)
                bfa_mem_dma_virt(fcport_dma);
}

/*
 * Memory initialization.
 */
static void
bfa_fcport_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
        struct bfa_pcidev_s *pcidev)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);
    struct bfa_port_cfg_s *port_cfg = &fcport->cfg;
    struct bfa_fcport_ln_s *ln = &fcport->ln;
    struct timeval tv;

    fcport->bfa = bfa;
    ln->fcport = fcport;

    bfa_fcport_mem_claim(fcport);

    bfa_sm_set_state(fcport, bfa_fcport_sm_uninit);
    bfa_sm_set_state(ln, bfa_fcport_ln_sm_dn);

    /*
     * initialize time stamp for stats reset
     */
    do_gettimeofday(&tv);
    fcport->stats_reset_time = tv.tv_sec;
    fcport->stats_dma_ready = BFA_FALSE;

    /*
     * initialize and set default configuration
     */
    port_cfg->topology = BFA_PORT_TOPOLOGY_P2P;
    port_cfg->speed = BFA_PORT_SPEED_AUTO;
    port_cfg->trunked = BFA_FALSE;
    port_cfg->maxfrsize = 0;

    port_cfg->trl_def_speed = BFA_PORT_SPEED_1GBPS;
    port_cfg->qos_bw.high = BFA_QOS_BW_HIGH;
    port_cfg->qos_bw.med = BFA_QOS_BW_MED;
    port_cfg->qos_bw.low = BFA_QOS_BW_LOW;

    INIT_LIST_HEAD(&fcport->stats_pending_q);
    INIT_LIST_HEAD(&fcport->statsclr_pending_q);

    bfa_reqq_winit(&fcport->reqq_wait, bfa_fcport_qresume, fcport);
}

static void
bfa_fcport_detach(struct bfa_s *bfa)
{
}

/*
 * Called when IOC is ready.
 */
static void
bfa_fcport_start(struct bfa_s *bfa)
{
    bfa_sm_send_event(BFA_FCPORT_MOD(bfa), BFA_FCPORT_SM_START);
}

/*
 * Called before IOC is stopped.
 */
static void
bfa_fcport_stop(struct bfa_s *bfa)
{
    bfa_sm_send_event(BFA_FCPORT_MOD(bfa), BFA_FCPORT_SM_STOP);
    bfa_trunk_iocdisable(bfa);
}

/*
 * Called when IOC failure is detected.
 */
static void
bfa_fcport_iocdisable(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    bfa_sm_send_event(fcport, BFA_FCPORT_SM_HWFAIL);
    bfa_trunk_iocdisable(bfa);
}

/*
 * Update loop info in fcport for SCN online
 */
static void
bfa_fcport_update_loop_info(struct bfa_fcport_s *fcport,
            struct bfa_fcport_loop_info_s *loop_info)
{
    fcport->myalpa = loop_info->myalpa;
    fcport->alpabm_valid =
            loop_info->alpabm_val;
    memcpy(fcport->alpabm.alpa_bm,
            loop_info->alpabm.alpa_bm,
            sizeof(struct fc_alpabm_s));
}

static void
bfa_fcport_update_linkinfo(struct bfa_fcport_s *fcport)
{
    struct bfi_fcport_event_s *pevent = fcport->event_arg.i2hmsg.event;
    struct bfa_fcport_trunk_s *trunk = &fcport->trunk;

    fcport->speed = pevent->link_state.speed;
    fcport->topology = pevent->link_state.topology;

    if (fcport->topology == BFA_PORT_TOPOLOGY_LOOP) {
        bfa_fcport_update_loop_info(fcport,
                &pevent->link_state.attr.loop_info);
        return;
    }

    /* QoS Details */
    fcport->qos_attr = pevent->link_state.qos_attr;
    fcport->qos_vc_attr = pevent->link_state.attr.vc_fcf.qos_vc_attr;

    /*
     * update trunk state if applicable
     */
    if (!fcport->cfg.trunked)
        trunk->attr.state = BFA_TRUNK_DISABLED;

    /* update FCoE specific */
    fcport->fcoe_vlan =
        be16_to_cpu(pevent->link_state.attr.vc_fcf.fcf.vlan);

    bfa_trc(fcport->bfa, fcport->speed);
    bfa_trc(fcport->bfa, fcport->topology);
}

static void
bfa_fcport_reset_linkinfo(struct bfa_fcport_s *fcport)
{
    fcport->speed = BFA_PORT_SPEED_UNKNOWN;
    fcport->topology = BFA_PORT_TOPOLOGY_NONE;
    fcport->bbsc_op_state = BFA_FALSE;
}

/*
 * Send port enable message to firmware.
 */
static bfa_boolean_t
bfa_fcport_send_enable(struct bfa_fcport_s *fcport)
{
    struct bfi_fcport_enable_req_s *m;

    /*
     * Increment message tag before queue check, so that responses to old
     * requests are discarded.
     */
    fcport->msgtag++;

    /*
     * check for room in queue to send request now
     */
    m = bfa_reqq_next(fcport->bfa, BFA_REQQ_PORT);
    if (!m) {
        bfa_reqq_wait(fcport->bfa, BFA_REQQ_PORT,
                            &fcport->reqq_wait);
        return BFA_FALSE;
    }

    bfi_h2i_set(m->mh, BFI_MC_FCPORT, BFI_FCPORT_H2I_ENABLE_REQ,
            bfa_fn_lpu(fcport->bfa));
    m->nwwn = fcport->nwwn;
    m->pwwn = fcport->pwwn;
    m->port_cfg = fcport->cfg;
    m->msgtag = fcport->msgtag;
    m->port_cfg.maxfrsize = cpu_to_be16(fcport->cfg.maxfrsize);
     m->use_flash_cfg = fcport->use_flash_cfg;
    bfa_dma_be_addr_set(m->stats_dma_addr, fcport->stats_pa);
    bfa_trc(fcport->bfa, m->stats_dma_addr.a32.addr_lo);
    bfa_trc(fcport->bfa, m->stats_dma_addr.a32.addr_hi);

    /*
     * queue I/O message to firmware
     */
    bfa_reqq_produce(fcport->bfa, BFA_REQQ_PORT, m->mh);
    return BFA_TRUE;
}

/*
 * Send port disable message to firmware.
 */
static  bfa_boolean_t
bfa_fcport_send_disable(struct bfa_fcport_s *fcport)
{
    struct bfi_fcport_req_s *m;

    /*
     * Increment message tag before queue check, so that responses to old
     * requests are discarded.
     */
    fcport->msgtag++;

    /*
     * check for room in queue to send request now
     */
    m = bfa_reqq_next(fcport->bfa, BFA_REQQ_PORT);
    if (!m) {
        bfa_reqq_wait(fcport->bfa, BFA_REQQ_PORT,
                            &fcport->reqq_wait);
        return BFA_FALSE;
    }

    bfi_h2i_set(m->mh, BFI_MC_FCPORT, BFI_FCPORT_H2I_DISABLE_REQ,
            bfa_fn_lpu(fcport->bfa));
    m->msgtag = fcport->msgtag;

    /*
     * queue I/O message to firmware
     */
    bfa_reqq_produce(fcport->bfa, BFA_REQQ_PORT, m->mh);

    return BFA_TRUE;
}

static void
bfa_fcport_set_wwns(struct bfa_fcport_s *fcport)
{
    fcport->pwwn = fcport->bfa->ioc.attr->pwwn;
    fcport->nwwn = fcport->bfa->ioc.attr->nwwn;

    bfa_trc(fcport->bfa, fcport->pwwn);
    bfa_trc(fcport->bfa, fcport->nwwn);
}

static void
bfa_fcport_qos_stats_swap(struct bfa_qos_stats_s *d,
    struct bfa_qos_stats_s *s)
{
    u32 *dip = (u32 *) d;
    __be32  *sip = (__be32 *) s;
    int     i;

    /* Now swap the 32 bit fields */
    for (i = 0; i < (sizeof(struct bfa_qos_stats_s)/sizeof(u32)); ++i)
        dip[i] = be32_to_cpu(sip[i]);
}

static void
bfa_fcport_fcoe_stats_swap(struct bfa_fcoe_stats_s *d,
    struct bfa_fcoe_stats_s *s)
{
    u32 *dip = (u32 *) d;
    __be32  *sip = (__be32 *) s;
    int     i;

    for (i = 0; i < ((sizeof(struct bfa_fcoe_stats_s))/sizeof(u32));
         i = i + 2) {
#ifdef __BIG_ENDIAN
        dip[i] = be32_to_cpu(sip[i]);
        dip[i + 1] = be32_to_cpu(sip[i + 1]);
#else
        dip[i] = be32_to_cpu(sip[i + 1]);
        dip[i + 1] = be32_to_cpu(sip[i]);
#endif
    }
}

static void
__bfa_cb_fcport_stats_get(void *cbarg, bfa_boolean_t complete)
{
    struct bfa_fcport_s *fcport = (struct bfa_fcport_s *)cbarg;
    struct bfa_cb_pending_q_s *cb;
    struct list_head *qe, *qen;
    union bfa_fcport_stats_u *ret;

    if (complete) {
        struct timeval tv;
        if (fcport->stats_status == BFA_STATUS_OK)
            do_gettimeofday(&tv);

        list_for_each_safe(qe, qen, &fcport->stats_pending_q) {
            bfa_q_deq(&fcport->stats_pending_q, &qe);
            cb = (struct bfa_cb_pending_q_s *)qe;
            if (fcport->stats_status == BFA_STATUS_OK) {
                ret = (union bfa_fcport_stats_u *)cb->data;
                /* Swap FC QoS or FCoE stats */
                if (bfa_ioc_get_fcmode(&fcport->bfa->ioc))
                    bfa_fcport_qos_stats_swap(&ret->fcqos,
                            &fcport->stats->fcqos);
                else {
                    bfa_fcport_fcoe_stats_swap(&ret->fcoe,
                            &fcport->stats->fcoe);
                    ret->fcoe.secs_reset =
                    tv.tv_sec - fcport->stats_reset_time;
                }
            }
            bfa_cb_queue_status(fcport->bfa, &cb->hcb_qe,
                    fcport->stats_status);
        }
        fcport->stats_status = BFA_STATUS_OK;
    } else {
        INIT_LIST_HEAD(&fcport->stats_pending_q);
        fcport->stats_status = BFA_STATUS_OK;
    }
}

static void
bfa_fcport_stats_get_timeout(void *cbarg)
{
    struct bfa_fcport_s *fcport = (struct bfa_fcport_s *) cbarg;

    bfa_trc(fcport->bfa, fcport->stats_qfull);

    if (fcport->stats_qfull) {
        bfa_reqq_wcancel(&fcport->stats_reqq_wait);
        fcport->stats_qfull = BFA_FALSE;
    }

    fcport->stats_status = BFA_STATUS_ETIMER;
    __bfa_cb_fcport_stats_get(fcport, BFA_TRUE);
}

static void
bfa_fcport_send_stats_get(void *cbarg)
{
    struct bfa_fcport_s *fcport = (struct bfa_fcport_s *) cbarg;
    struct bfi_fcport_req_s *msg;

    msg = bfa_reqq_next(fcport->bfa, BFA_REQQ_PORT);

    if (!msg) {
        fcport->stats_qfull = BFA_TRUE;
        bfa_reqq_winit(&fcport->stats_reqq_wait,
                bfa_fcport_send_stats_get, fcport);
        bfa_reqq_wait(fcport->bfa, BFA_REQQ_PORT,
                &fcport->stats_reqq_wait);
        return;
    }
    fcport->stats_qfull = BFA_FALSE;

    memset(msg, 0, sizeof(struct bfi_fcport_req_s));
    bfi_h2i_set(msg->mh, BFI_MC_FCPORT, BFI_FCPORT_H2I_STATS_GET_REQ,
            bfa_fn_lpu(fcport->bfa));
    bfa_reqq_produce(fcport->bfa, BFA_REQQ_PORT, msg->mh);
}

static void
__bfa_cb_fcport_stats_clr(void *cbarg, bfa_boolean_t complete)
{
    struct bfa_fcport_s *fcport = (struct bfa_fcport_s *) cbarg;
    struct bfa_cb_pending_q_s *cb;
    struct list_head *qe, *qen;

    if (complete) {
        struct timeval tv;

        /*
         * re-initialize time stamp for stats reset
         */
        do_gettimeofday(&tv);
        fcport->stats_reset_time = tv.tv_sec;
        list_for_each_safe(qe, qen, &fcport->statsclr_pending_q) {
            bfa_q_deq(&fcport->statsclr_pending_q, &qe);
            cb = (struct bfa_cb_pending_q_s *)qe;
            bfa_cb_queue_status(fcport->bfa, &cb->hcb_qe,
                        fcport->stats_status);
        }
        fcport->stats_status = BFA_STATUS_OK;
    } else {
        INIT_LIST_HEAD(&fcport->statsclr_pending_q);
        fcport->stats_status = BFA_STATUS_OK;
    }
}

static void
bfa_fcport_stats_clr_timeout(void *cbarg)
{
    struct bfa_fcport_s *fcport = (struct bfa_fcport_s *) cbarg;

    bfa_trc(fcport->bfa, fcport->stats_qfull);

    if (fcport->stats_qfull) {
        bfa_reqq_wcancel(&fcport->stats_reqq_wait);
        fcport->stats_qfull = BFA_FALSE;
    }

    fcport->stats_status = BFA_STATUS_ETIMER;
    __bfa_cb_fcport_stats_clr(fcport, BFA_TRUE);
}

static void
bfa_fcport_send_stats_clear(void *cbarg)
{
    struct bfa_fcport_s *fcport = (struct bfa_fcport_s *) cbarg;
    struct bfi_fcport_req_s *msg;

    msg = bfa_reqq_next(fcport->bfa, BFA_REQQ_PORT);

    if (!msg) {
        fcport->stats_qfull = BFA_TRUE;
        bfa_reqq_winit(&fcport->stats_reqq_wait,
                bfa_fcport_send_stats_clear, fcport);
        bfa_reqq_wait(fcport->bfa, BFA_REQQ_PORT,
                        &fcport->stats_reqq_wait);
        return;
    }
    fcport->stats_qfull = BFA_FALSE;

    memset(msg, 0, sizeof(struct bfi_fcport_req_s));
    bfi_h2i_set(msg->mh, BFI_MC_FCPORT, BFI_FCPORT_H2I_STATS_CLEAR_REQ,
            bfa_fn_lpu(fcport->bfa));
    bfa_reqq_produce(fcport->bfa, BFA_REQQ_PORT, msg->mh);
}

/*
 * Handle trunk SCN event from firmware.
 */
static void
bfa_trunk_scn(struct bfa_fcport_s *fcport, struct bfi_fcport_trunk_scn_s *scn)
{
    struct bfa_fcport_trunk_s *trunk = &fcport->trunk;
    struct bfi_fcport_trunk_link_s *tlink;
    struct bfa_trunk_link_attr_s *lattr;
    enum bfa_trunk_state state_prev;
    int i;
    int link_bm = 0;

    bfa_trc(fcport->bfa, fcport->cfg.trunked);
    WARN_ON(scn->trunk_state != BFA_TRUNK_ONLINE &&
           scn->trunk_state != BFA_TRUNK_OFFLINE);

    bfa_trc(fcport->bfa, trunk->attr.state);
    bfa_trc(fcport->bfa, scn->trunk_state);
    bfa_trc(fcport->bfa, scn->trunk_speed);

    /*
     * Save off new state for trunk attribute query
     */
    state_prev = trunk->attr.state;
    if (fcport->cfg.trunked && (trunk->attr.state != BFA_TRUNK_DISABLED))
        trunk->attr.state = scn->trunk_state;
    trunk->attr.speed = scn->trunk_speed;
    for (i = 0; i < BFA_TRUNK_MAX_PORTS; i++) {
        lattr = &trunk->attr.link_attr[i];
        tlink = &scn->tlink[i];

        lattr->link_state = tlink->state;
        lattr->trunk_wwn  = tlink->trunk_wwn;
        lattr->fctl   = tlink->fctl;
        lattr->speed      = tlink->speed;
        lattr->deskew     = be32_to_cpu(tlink->deskew);

        if (tlink->state == BFA_TRUNK_LINK_STATE_UP) {
            fcport->speed    = tlink->speed;
            fcport->topology = BFA_PORT_TOPOLOGY_P2P;
            link_bm |= 1 << i;
        }

        bfa_trc(fcport->bfa, lattr->link_state);
        bfa_trc(fcport->bfa, lattr->trunk_wwn);
        bfa_trc(fcport->bfa, lattr->fctl);
        bfa_trc(fcport->bfa, lattr->speed);
        bfa_trc(fcport->bfa, lattr->deskew);
    }

    switch (link_bm) {
    case 3:
        bfa_plog_str(fcport->bfa->plog, BFA_PL_MID_HAL,
            BFA_PL_EID_TRUNK_SCN, 0, "Trunk up(0,1)");
        break;
    case 2:
        bfa_plog_str(fcport->bfa->plog, BFA_PL_MID_HAL,
            BFA_PL_EID_TRUNK_SCN, 0, "Trunk up(-,1)");
        break;
    case 1:
        bfa_plog_str(fcport->bfa->plog, BFA_PL_MID_HAL,
            BFA_PL_EID_TRUNK_SCN, 0, "Trunk up(0,-)");
        break;
    default:
        bfa_plog_str(fcport->bfa->plog, BFA_PL_MID_HAL,
            BFA_PL_EID_TRUNK_SCN, 0, "Trunk down");
    }

    /*
     * Notify upper layers if trunk state changed.
     */
    if ((state_prev != trunk->attr.state) ||
        (scn->trunk_state == BFA_TRUNK_OFFLINE)) {
        bfa_fcport_scn(fcport, (scn->trunk_state == BFA_TRUNK_ONLINE) ?
            BFA_PORT_LINKUP : BFA_PORT_LINKDOWN, BFA_TRUE);
    }
}

static void
bfa_trunk_iocdisable(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);
    int i = 0;

    /*
     * In trunked mode, notify upper layers that link is down
     */
    if (fcport->cfg.trunked) {
        if (fcport->trunk.attr.state == BFA_TRUNK_ONLINE)
            bfa_fcport_scn(fcport, BFA_PORT_LINKDOWN, BFA_TRUE);

        fcport->trunk.attr.state = BFA_TRUNK_OFFLINE;
        fcport->trunk.attr.speed = BFA_PORT_SPEED_UNKNOWN;
        for (i = 0; i < BFA_TRUNK_MAX_PORTS; i++) {
            fcport->trunk.attr.link_attr[i].trunk_wwn = 0;
            fcport->trunk.attr.link_attr[i].fctl =
                        BFA_TRUNK_LINK_FCTL_NORMAL;
            fcport->trunk.attr.link_attr[i].link_state =
                        BFA_TRUNK_LINK_STATE_DN_LINKDN;
            fcport->trunk.attr.link_attr[i].speed =
                        BFA_PORT_SPEED_UNKNOWN;
            fcport->trunk.attr.link_attr[i].deskew = 0;
        }
    }
}

/*
 * Called to initialize port attributes
 */
void
bfa_fcport_init(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    /*
     * Initialize port attributes from IOC hardware data.
     */
    bfa_fcport_set_wwns(fcport);
    if (fcport->cfg.maxfrsize == 0)
        fcport->cfg.maxfrsize = bfa_ioc_maxfrsize(&bfa->ioc);
    fcport->cfg.rx_bbcredit = bfa_ioc_rx_bbcredit(&bfa->ioc);
    fcport->speed_sup = bfa_ioc_speed_sup(&bfa->ioc);

    if (bfa_fcport_is_pbcdisabled(bfa))
        bfa->modules.port.pbc_disabled = BFA_TRUE;

    WARN_ON(!fcport->cfg.maxfrsize);
    WARN_ON(!fcport->cfg.rx_bbcredit);
    WARN_ON(!fcport->speed_sup);
}

/*
 * Firmware message handler.
 */
void
bfa_fcport_isr(struct bfa_s *bfa, struct bfi_msg_s *msg)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);
    union bfi_fcport_i2h_msg_u i2hmsg;

    i2hmsg.msg = msg;
    fcport->event_arg.i2hmsg = i2hmsg;

    bfa_trc(bfa, msg->mhdr.msg_id);
    bfa_trc(bfa, bfa_sm_to_state(hal_port_sm_table, fcport->sm));

    switch (msg->mhdr.msg_id) {
    case BFI_FCPORT_I2H_ENABLE_RSP:
        if (fcport->msgtag == i2hmsg.penable_rsp->msgtag) {

            fcport->stats_dma_ready = BFA_TRUE;
            if (fcport->use_flash_cfg) {
                fcport->cfg = i2hmsg.penable_rsp->port_cfg;
                fcport->cfg.maxfrsize =
                    cpu_to_be16(fcport->cfg.maxfrsize);
                fcport->cfg.path_tov =
                    cpu_to_be16(fcport->cfg.path_tov);
                fcport->cfg.q_depth =
                    cpu_to_be16(fcport->cfg.q_depth);

                if (fcport->cfg.trunked)
                    fcport->trunk.attr.state =
                        BFA_TRUNK_OFFLINE;
                else
                    fcport->trunk.attr.state =
                        BFA_TRUNK_DISABLED;
                fcport->qos_attr.qos_bw =
                    i2hmsg.penable_rsp->port_cfg.qos_bw;
                fcport->use_flash_cfg = BFA_FALSE;
            }

            if (fcport->cfg.qos_enabled)
                fcport->qos_attr.state = BFA_QOS_OFFLINE;
            else
                fcport->qos_attr.state = BFA_QOS_DISABLED;

            fcport->qos_attr.qos_bw_op =
                    i2hmsg.penable_rsp->port_cfg.qos_bw;

            bfa_sm_send_event(fcport, BFA_FCPORT_SM_FWRSP);
        }
        break;

    case BFI_FCPORT_I2H_DISABLE_RSP:
        if (fcport->msgtag == i2hmsg.penable_rsp->msgtag)
            bfa_sm_send_event(fcport, BFA_FCPORT_SM_FWRSP);
        break;

    case BFI_FCPORT_I2H_EVENT:
        if (i2hmsg.event->link_state.linkstate == BFA_PORT_LINKUP)
            bfa_sm_send_event(fcport, BFA_FCPORT_SM_LINKUP);
        else {
            if (i2hmsg.event->link_state.linkstate_rsn ==
                BFA_PORT_LINKSTATE_RSN_FAA_MISCONFIG)
                bfa_sm_send_event(fcport,
                          BFA_FCPORT_SM_FAA_MISCONFIG);
            else
                bfa_sm_send_event(fcport,
                          BFA_FCPORT_SM_LINKDOWN);
        }
        fcport->qos_attr.qos_bw_op =
                i2hmsg.event->link_state.qos_attr.qos_bw_op;
        break;

    case BFI_FCPORT_I2H_TRUNK_SCN:
        bfa_trunk_scn(fcport, i2hmsg.trunk_scn);
        break;

    case BFI_FCPORT_I2H_STATS_GET_RSP:
        /*
         * check for timer pop before processing the rsp
         */
        if (list_empty(&fcport->stats_pending_q) ||
            (fcport->stats_status == BFA_STATUS_ETIMER))
            break;

        bfa_timer_stop(&fcport->timer);
        fcport->stats_status = i2hmsg.pstatsget_rsp->status;
        __bfa_cb_fcport_stats_get(fcport, BFA_TRUE);
        break;

    case BFI_FCPORT_I2H_STATS_CLEAR_RSP:
        /*
         * check for timer pop before processing the rsp
         */
        if (list_empty(&fcport->statsclr_pending_q) ||
            (fcport->stats_status == BFA_STATUS_ETIMER))
            break;

        bfa_timer_stop(&fcport->timer);
        fcport->stats_status = BFA_STATUS_OK;
        __bfa_cb_fcport_stats_clr(fcport, BFA_TRUE);
        break;

    case BFI_FCPORT_I2H_ENABLE_AEN:
        bfa_sm_send_event(fcport, BFA_FCPORT_SM_ENABLE);
        break;

    case BFI_FCPORT_I2H_DISABLE_AEN:
        bfa_sm_send_event(fcport, BFA_FCPORT_SM_DISABLE);
        break;

    default:
        WARN_ON(1);
    break;
    }
}

/*
 * Registered callback for port events.
 */
void
bfa_fcport_event_register(struct bfa_s *bfa,
                void (*cbfn) (void *cbarg,
                enum bfa_port_linkstate event),
                void *cbarg)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    fcport->event_cbfn = cbfn;
    fcport->event_cbarg = cbarg;
}

bfa_status_t
bfa_fcport_enable(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    if (bfa_fcport_is_pbcdisabled(bfa))
        return BFA_STATUS_PBC;

    if (bfa_ioc_is_disabled(&bfa->ioc))
        return BFA_STATUS_IOC_DISABLED;

    if (fcport->diag_busy)
        return BFA_STATUS_DIAG_BUSY;

    bfa_sm_send_event(BFA_FCPORT_MOD(bfa), BFA_FCPORT_SM_ENABLE);
    return BFA_STATUS_OK;
}

bfa_status_t
bfa_fcport_disable(struct bfa_s *bfa)
{
    if (bfa_fcport_is_pbcdisabled(bfa))
        return BFA_STATUS_PBC;

    if (bfa_ioc_is_disabled(&bfa->ioc))
        return BFA_STATUS_IOC_DISABLED;

    bfa_sm_send_event(BFA_FCPORT_MOD(bfa), BFA_FCPORT_SM_DISABLE);
    return BFA_STATUS_OK;
}

/* If PBC is disabled on port, return error */
bfa_status_t
bfa_fcport_is_pbcdisabled(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);
    struct bfa_iocfc_s *iocfc = &bfa->iocfc;
    struct bfi_iocfc_cfgrsp_s *cfgrsp = iocfc->cfgrsp;

    if (cfgrsp->pbc_cfg.port_enabled == BFI_PBC_PORT_DISABLED) {
        bfa_trc(bfa, fcport->pwwn);
        return BFA_STATUS_PBC;
    }
    return BFA_STATUS_OK;
}

/*
 * Configure port speed.
 */
bfa_status_t
bfa_fcport_cfg_speed(struct bfa_s *bfa, enum bfa_port_speed speed)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    bfa_trc(bfa, speed);

    if (fcport->cfg.trunked == BFA_TRUE)
        return BFA_STATUS_TRUNK_ENABLED;
    if ((fcport->cfg.topology == BFA_PORT_TOPOLOGY_LOOP) &&
            (speed == BFA_PORT_SPEED_16GBPS))
        return BFA_STATUS_UNSUPP_SPEED;
    if ((speed != BFA_PORT_SPEED_AUTO) && (speed > fcport->speed_sup)) {
        bfa_trc(bfa, fcport->speed_sup);
        return BFA_STATUS_UNSUPP_SPEED;
    }

    /* Port speed entered needs to be checked */
    if (bfa_ioc_get_type(&fcport->bfa->ioc) == BFA_IOC_TYPE_FC) {
        /* For CT2, 1G is not supported */
        if ((speed == BFA_PORT_SPEED_1GBPS) &&
            (bfa_asic_id_ct2(bfa->ioc.pcidev.device_id)))
            return BFA_STATUS_UNSUPP_SPEED;

        /* Already checked for Auto Speed and Max Speed supp */
        if (!(speed == BFA_PORT_SPEED_1GBPS ||
              speed == BFA_PORT_SPEED_2GBPS ||
              speed == BFA_PORT_SPEED_4GBPS ||
              speed == BFA_PORT_SPEED_8GBPS ||
              speed == BFA_PORT_SPEED_16GBPS ||
              speed == BFA_PORT_SPEED_AUTO))
            return BFA_STATUS_UNSUPP_SPEED;
    } else {
        if (speed != BFA_PORT_SPEED_10GBPS)
            return BFA_STATUS_UNSUPP_SPEED;
    }

    fcport->cfg.speed = speed;

    return BFA_STATUS_OK;
}

/*
 * Get current speed.
 */
enum bfa_port_speed
bfa_fcport_get_speed(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    return fcport->speed;
}

/*
 * Configure port topology.
 */
bfa_status_t
bfa_fcport_cfg_topology(struct bfa_s *bfa, enum bfa_port_topology topology)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    bfa_trc(bfa, topology);
    bfa_trc(bfa, fcport->cfg.topology);

    switch (topology) {
    case BFA_PORT_TOPOLOGY_P2P:
        break;

    case BFA_PORT_TOPOLOGY_LOOP:
        if ((bfa_fcport_is_qos_enabled(bfa) != BFA_FALSE) ||
            (fcport->qos_attr.state != BFA_QOS_DISABLED))
            return BFA_STATUS_ERROR_QOS_ENABLED;
        if (fcport->cfg.ratelimit != BFA_FALSE)
            return BFA_STATUS_ERROR_TRL_ENABLED;
        if ((bfa_fcport_is_trunk_enabled(bfa) != BFA_FALSE) ||
            (fcport->trunk.attr.state != BFA_TRUNK_DISABLED))
            return BFA_STATUS_ERROR_TRUNK_ENABLED;
        if ((bfa_fcport_get_speed(bfa) == BFA_PORT_SPEED_16GBPS) ||
            (fcport->cfg.speed == BFA_PORT_SPEED_16GBPS))
            return BFA_STATUS_UNSUPP_SPEED;
        if (bfa_mfg_is_mezz(bfa->ioc.attr->card_type))
            return BFA_STATUS_LOOP_UNSUPP_MEZZ;
        if (bfa_fcport_is_dport(bfa) != BFA_FALSE)
            return BFA_STATUS_DPORT_ERR;
        break;

    case BFA_PORT_TOPOLOGY_AUTO:
        break;

    default:
        return BFA_STATUS_EINVAL;
    }

    fcport->cfg.topology = topology;
    return BFA_STATUS_OK;
}

/*
 * Get current topology.
 */
enum bfa_port_topology
bfa_fcport_get_topology(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    return fcport->topology;
}

enum bfa_port_topology
bfa_fcport_get_cfg_topology(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    return fcport->cfg.topology;
}

bfa_status_t
bfa_fcport_cfg_hardalpa(struct bfa_s *bfa, u8 alpa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    bfa_trc(bfa, alpa);
    bfa_trc(bfa, fcport->cfg.cfg_hardalpa);
    bfa_trc(bfa, fcport->cfg.hardalpa);

    fcport->cfg.cfg_hardalpa = BFA_TRUE;
    fcport->cfg.hardalpa = alpa;

    return BFA_STATUS_OK;
}

bfa_status_t
bfa_fcport_clr_hardalpa(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    bfa_trc(bfa, fcport->cfg.cfg_hardalpa);
    bfa_trc(bfa, fcport->cfg.hardalpa);

    fcport->cfg.cfg_hardalpa = BFA_FALSE;
    return BFA_STATUS_OK;
}

bfa_boolean_t
bfa_fcport_get_hardalpa(struct bfa_s *bfa, u8 *alpa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    *alpa = fcport->cfg.hardalpa;
    return fcport->cfg.cfg_hardalpa;
}

u8
bfa_fcport_get_myalpa(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    return fcport->myalpa;
}

bfa_status_t
bfa_fcport_cfg_maxfrsize(struct bfa_s *bfa, u16 maxfrsize)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    bfa_trc(bfa, maxfrsize);
    bfa_trc(bfa, fcport->cfg.maxfrsize);

    /* with in range */
    if ((maxfrsize > FC_MAX_PDUSZ) || (maxfrsize < FC_MIN_PDUSZ))
        return BFA_STATUS_INVLD_DFSZ;

    /* power of 2, if not the max frame size of 2112 */
    if ((maxfrsize != FC_MAX_PDUSZ) && (maxfrsize & (maxfrsize - 1)))
        return BFA_STATUS_INVLD_DFSZ;

    fcport->cfg.maxfrsize = maxfrsize;
    return BFA_STATUS_OK;
}

u16
bfa_fcport_get_maxfrsize(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    return fcport->cfg.maxfrsize;
}

u8
bfa_fcport_get_rx_bbcredit(struct bfa_s *bfa)
{
    if (bfa_fcport_get_topology(bfa) != BFA_PORT_TOPOLOGY_LOOP)
        return (BFA_FCPORT_MOD(bfa))->cfg.rx_bbcredit;

    else
        return 0;
}

void
bfa_fcport_set_tx_bbcredit(struct bfa_s *bfa, u16 tx_bbcredit, u8 bb_scn)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    fcport->cfg.tx_bbcredit = (u8)tx_bbcredit;
    fcport->cfg.bb_scn = bb_scn;
    if (bb_scn)
        fcport->bbsc_op_state = BFA_TRUE;
}

/*
 * Get port attributes.
 */

wwn_t
bfa_fcport_get_wwn(struct bfa_s *bfa, bfa_boolean_t node)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);
    if (node)
        return fcport->nwwn;
    else
        return fcport->pwwn;
}

void
bfa_fcport_get_attr(struct bfa_s *bfa, struct bfa_port_attr_s *attr)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    memset(attr, 0, sizeof(struct bfa_port_attr_s));

    attr->nwwn = fcport->nwwn;
    attr->pwwn = fcport->pwwn;

    attr->factorypwwn =  bfa->ioc.attr->mfg_pwwn;
    attr->factorynwwn =  bfa->ioc.attr->mfg_nwwn;

    memcpy(&attr->pport_cfg, &fcport->cfg,
        sizeof(struct bfa_port_cfg_s));
    /* speed attributes */
    attr->pport_cfg.speed = fcport->cfg.speed;
    attr->speed_supported = fcport->speed_sup;
    attr->speed = fcport->speed;
    attr->cos_supported = FC_CLASS_3;

    /* topology attributes */
    attr->pport_cfg.topology = fcport->cfg.topology;
    attr->topology = fcport->topology;
    attr->pport_cfg.trunked = fcport->cfg.trunked;

    /* beacon attributes */
    attr->beacon = fcport->beacon;
    attr->link_e2e_beacon = fcport->link_e2e_beacon;

    attr->pport_cfg.path_tov  = bfa_fcpim_path_tov_get(bfa);
    attr->pport_cfg.q_depth  = bfa_fcpim_qdepth_get(bfa);
    attr->port_state = bfa_sm_to_state(hal_port_sm_table, fcport->sm);
    attr->bbsc_op_status =  fcport->bbsc_op_state;

    /* PBC Disabled State */
    if (bfa_fcport_is_pbcdisabled(bfa))
        attr->port_state = BFA_PORT_ST_PREBOOT_DISABLED;
    else {
        if (bfa_ioc_is_disabled(&fcport->bfa->ioc))
            attr->port_state = BFA_PORT_ST_IOCDIS;
        else if (bfa_ioc_fw_mismatch(&fcport->bfa->ioc))
            attr->port_state = BFA_PORT_ST_FWMISMATCH;
    }

    /* FCoE vlan */
    attr->fcoe_vlan = fcport->fcoe_vlan;
}

#define BFA_FCPORT_STATS_TOV    1000

/*
 * Fetch port statistics (FCQoS or FCoE).
 */
bfa_status_t
bfa_fcport_get_stats(struct bfa_s *bfa, struct bfa_cb_pending_q_s *cb)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    if (!bfa_iocfc_is_operational(bfa) ||
        !fcport->stats_dma_ready)
        return BFA_STATUS_IOC_NON_OP;

    if (!list_empty(&fcport->statsclr_pending_q))
        return BFA_STATUS_DEVBUSY;

    if (list_empty(&fcport->stats_pending_q)) {
        list_add_tail(&cb->hcb_qe.qe, &fcport->stats_pending_q);
        bfa_fcport_send_stats_get(fcport);
        bfa_timer_start(bfa, &fcport->timer,
                bfa_fcport_stats_get_timeout,
                fcport, BFA_FCPORT_STATS_TOV);
    } else
        list_add_tail(&cb->hcb_qe.qe, &fcport->stats_pending_q);

    return BFA_STATUS_OK;
}

/*
 * Reset port statistics (FCQoS or FCoE).
 */
bfa_status_t
bfa_fcport_clear_stats(struct bfa_s *bfa, struct bfa_cb_pending_q_s *cb)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    if (!bfa_iocfc_is_operational(bfa) ||
        !fcport->stats_dma_ready)
        return BFA_STATUS_IOC_NON_OP;

    if (!list_empty(&fcport->stats_pending_q))
        return BFA_STATUS_DEVBUSY;

    if (list_empty(&fcport->statsclr_pending_q)) {
        list_add_tail(&cb->hcb_qe.qe, &fcport->statsclr_pending_q);
        bfa_fcport_send_stats_clear(fcport);
        bfa_timer_start(bfa, &fcport->timer,
                bfa_fcport_stats_clr_timeout,
                fcport, BFA_FCPORT_STATS_TOV);
    } else
        list_add_tail(&cb->hcb_qe.qe, &fcport->statsclr_pending_q);

    return BFA_STATUS_OK;
}

/*
 * Fetch port attributes.
 */
bfa_boolean_t
bfa_fcport_is_disabled(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    return bfa_sm_to_state(hal_port_sm_table, fcport->sm) ==
        BFA_PORT_ST_DISABLED;

}

bfa_boolean_t
bfa_fcport_is_dport(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    return (bfa_sm_to_state(hal_port_sm_table, fcport->sm) ==
        BFA_PORT_ST_DPORT);
}

bfa_status_t
bfa_fcport_set_qos_bw(struct bfa_s *bfa, struct bfa_qos_bw_s *qos_bw)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);
    enum bfa_ioc_type_e ioc_type = bfa_get_type(bfa);

    bfa_trc(bfa, ioc_type);

    if ((qos_bw->high == 0) || (qos_bw->med == 0) || (qos_bw->low == 0))
        return BFA_STATUS_QOS_BW_INVALID;

    if ((qos_bw->high + qos_bw->med + qos_bw->low) != 100)
        return BFA_STATUS_QOS_BW_INVALID;

    if ((qos_bw->med > qos_bw->high) || (qos_bw->low > qos_bw->med) ||
        (qos_bw->low > qos_bw->high))
        return BFA_STATUS_QOS_BW_INVALID;

    if ((ioc_type == BFA_IOC_TYPE_FC) &&
        (fcport->cfg.topology != BFA_PORT_TOPOLOGY_LOOP))
        fcport->cfg.qos_bw = *qos_bw;

    return BFA_STATUS_OK;
}

bfa_boolean_t
bfa_fcport_is_ratelim(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    return fcport->cfg.ratelimit ? BFA_TRUE : BFA_FALSE;

}

/*
 *  Enable/Disable FAA feature in port config
 */
void
bfa_fcport_cfg_faa(struct bfa_s *bfa, u8 state)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    bfa_trc(bfa, state);
    fcport->cfg.faa_state = state;
}

/*
 * Get default minimum ratelim speed
 */
enum bfa_port_speed
bfa_fcport_get_ratelim_speed(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    bfa_trc(bfa, fcport->cfg.trl_def_speed);
    return fcport->cfg.trl_def_speed;

}

void
bfa_fcport_beacon(void *dev, bfa_boolean_t beacon,
          bfa_boolean_t link_e2e_beacon)
{
    struct bfa_s *bfa = dev;
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    bfa_trc(bfa, beacon);
    bfa_trc(bfa, link_e2e_beacon);
    bfa_trc(bfa, fcport->beacon);
    bfa_trc(bfa, fcport->link_e2e_beacon);

    fcport->beacon = beacon;
    fcport->link_e2e_beacon = link_e2e_beacon;
}

bfa_boolean_t
bfa_fcport_is_linkup(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    return  (!fcport->cfg.trunked &&
         bfa_sm_cmp_state(fcport, bfa_fcport_sm_linkup)) ||
        (fcport->cfg.trunked &&
         fcport->trunk.attr.state == BFA_TRUNK_ONLINE);
}

bfa_boolean_t
bfa_fcport_is_qos_enabled(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    return fcport->cfg.qos_enabled;
}

bfa_boolean_t
bfa_fcport_is_trunk_enabled(struct bfa_s *bfa)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);

    return fcport->cfg.trunked;
}

void
bfa_fcport_dportenable(struct bfa_s *bfa)
{
    /*
     * Assume caller check for port is in disable state
     */
    bfa_sm_send_event(BFA_FCPORT_MOD(bfa), BFA_FCPORT_SM_DPORTENABLE);
    bfa_port_set_dportenabled(&bfa->modules.port, BFA_TRUE);
}

void
bfa_fcport_dportdisable(struct bfa_s *bfa)
{
    /*
     * Assume caller check for port is in disable state
     */
    bfa_sm_send_event(BFA_FCPORT_MOD(bfa), BFA_FCPORT_SM_DPORTDISABLE);
    bfa_port_set_dportenabled(&bfa->modules.port, BFA_FALSE);
}

/*
 * Rport State machine functions
 */
/*
 * Beginning state, only online event expected.
 */
static void
bfa_rport_sm_uninit(struct bfa_rport_s *rp, enum bfa_rport_event event)
{
    bfa_trc(rp->bfa, rp->rport_tag);
    bfa_trc(rp->bfa, event);

    switch (event) {
    case BFA_RPORT_SM_CREATE:
        bfa_stats(rp, sm_un_cr);
        bfa_sm_set_state(rp, bfa_rport_sm_created);
        break;

    default:
        bfa_stats(rp, sm_un_unexp);
        bfa_sm_fault(rp->bfa, event);
    }
}

static void
bfa_rport_sm_created(struct bfa_rport_s *rp, enum bfa_rport_event event)
{
    bfa_trc(rp->bfa, rp->rport_tag);
    bfa_trc(rp->bfa, event);

    switch (event) {
    case BFA_RPORT_SM_ONLINE:
        bfa_stats(rp, sm_cr_on);
        if (bfa_rport_send_fwcreate(rp))
            bfa_sm_set_state(rp, bfa_rport_sm_fwcreate);
        else
            bfa_sm_set_state(rp, bfa_rport_sm_fwcreate_qfull);
        break;

    case BFA_RPORT_SM_DELETE:
        bfa_stats(rp, sm_cr_del);
        bfa_sm_set_state(rp, bfa_rport_sm_uninit);
        bfa_rport_free(rp);
        break;

    case BFA_RPORT_SM_HWFAIL:
        bfa_stats(rp, sm_cr_hwf);
        bfa_sm_set_state(rp, bfa_rport_sm_iocdisable);
        break;

    default:
        bfa_stats(rp, sm_cr_unexp);
        bfa_sm_fault(rp->bfa, event);
    }
}

/*
 * Waiting for rport create response from firmware.
 */
static void
bfa_rport_sm_fwcreate(struct bfa_rport_s *rp, enum bfa_rport_event event)
{
    bfa_trc(rp->bfa, rp->rport_tag);
    bfa_trc(rp->bfa, event);

    switch (event) {
    case BFA_RPORT_SM_FWRSP:
        bfa_stats(rp, sm_fwc_rsp);
        bfa_sm_set_state(rp, bfa_rport_sm_online);
        bfa_rport_online_cb(rp);
        break;

    case BFA_RPORT_SM_DELETE:
        bfa_stats(rp, sm_fwc_del);
        bfa_sm_set_state(rp, bfa_rport_sm_delete_pending);
        break;

    case BFA_RPORT_SM_OFFLINE:
        bfa_stats(rp, sm_fwc_off);
        bfa_sm_set_state(rp, bfa_rport_sm_offline_pending);
        break;

    case BFA_RPORT_SM_HWFAIL:
        bfa_stats(rp, sm_fwc_hwf);
        bfa_sm_set_state(rp, bfa_rport_sm_iocdisable);
        break;

    default:
        bfa_stats(rp, sm_fwc_unexp);
        bfa_sm_fault(rp->bfa, event);
    }
}

/*
 * Request queue is full, awaiting queue resume to send create request.
 */
static void
bfa_rport_sm_fwcreate_qfull(struct bfa_rport_s *rp, enum bfa_rport_event event)
{
    bfa_trc(rp->bfa, rp->rport_tag);
    bfa_trc(rp->bfa, event);

    switch (event) {
    case BFA_RPORT_SM_QRESUME:
        bfa_sm_set_state(rp, bfa_rport_sm_fwcreate);
        bfa_rport_send_fwcreate(rp);
        break;

    case BFA_RPORT_SM_DELETE:
        bfa_stats(rp, sm_fwc_del);
        bfa_sm_set_state(rp, bfa_rport_sm_uninit);
        bfa_reqq_wcancel(&rp->reqq_wait);
        bfa_rport_free(rp);
        break;

    case BFA_RPORT_SM_OFFLINE:
        bfa_stats(rp, sm_fwc_off);
        bfa_sm_set_state(rp, bfa_rport_sm_offline);
        bfa_reqq_wcancel(&rp->reqq_wait);
        bfa_rport_offline_cb(rp);
        break;

    case BFA_RPORT_SM_HWFAIL:
        bfa_stats(rp, sm_fwc_hwf);
        bfa_sm_set_state(rp, bfa_rport_sm_iocdisable);
        bfa_reqq_wcancel(&rp->reqq_wait);
        break;

    default:
        bfa_stats(rp, sm_fwc_unexp);
        bfa_sm_fault(rp->bfa, event);
    }
}

/*
 * Online state - normal parking state.
 */
static void
bfa_rport_sm_online(struct bfa_rport_s *rp, enum bfa_rport_event event)
{
    struct bfi_rport_qos_scn_s *qos_scn;

    bfa_trc(rp->bfa, rp->rport_tag);
    bfa_trc(rp->bfa, event);

    switch (event) {
    case BFA_RPORT_SM_OFFLINE:
        bfa_stats(rp, sm_on_off);
        if (bfa_rport_send_fwdelete(rp))
            bfa_sm_set_state(rp, bfa_rport_sm_fwdelete);
        else
            bfa_sm_set_state(rp, bfa_rport_sm_fwdelete_qfull);
        break;

    case BFA_RPORT_SM_DELETE:
        bfa_stats(rp, sm_on_del);
        if (bfa_rport_send_fwdelete(rp))
            bfa_sm_set_state(rp, bfa_rport_sm_deleting);
        else
            bfa_sm_set_state(rp, bfa_rport_sm_deleting_qfull);
        break;

    case BFA_RPORT_SM_HWFAIL:
        bfa_stats(rp, sm_on_hwf);
        bfa_sm_set_state(rp, bfa_rport_sm_iocdisable);
        break;

    case BFA_RPORT_SM_SET_SPEED:
        bfa_rport_send_fwspeed(rp);
        break;

    case BFA_RPORT_SM_QOS_SCN:
        qos_scn = (struct bfi_rport_qos_scn_s *) rp->event_arg.fw_msg;
        rp->qos_attr = qos_scn->new_qos_attr;
        bfa_trc(rp->bfa, qos_scn->old_qos_attr.qos_flow_id);
        bfa_trc(rp->bfa, qos_scn->new_qos_attr.qos_flow_id);
        bfa_trc(rp->bfa, qos_scn->old_qos_attr.qos_priority);
        bfa_trc(rp->bfa, qos_scn->new_qos_attr.qos_priority);

        qos_scn->old_qos_attr.qos_flow_id  =
            be32_to_cpu(qos_scn->old_qos_attr.qos_flow_id);
        qos_scn->new_qos_attr.qos_flow_id  =
            be32_to_cpu(qos_scn->new_qos_attr.qos_flow_id);

        if (qos_scn->old_qos_attr.qos_flow_id !=
            qos_scn->new_qos_attr.qos_flow_id)
            bfa_cb_rport_qos_scn_flowid(rp->rport_drv,
                            qos_scn->old_qos_attr,
                            qos_scn->new_qos_attr);
        if (qos_scn->old_qos_attr.qos_priority !=
            qos_scn->new_qos_attr.qos_priority)
            bfa_cb_rport_qos_scn_prio(rp->rport_drv,
                          qos_scn->old_qos_attr,
                          qos_scn->new_qos_attr);
        break;

    default:
        bfa_stats(rp, sm_on_unexp);
        bfa_sm_fault(rp->bfa, event);
    }
}

/*
 * Firmware rport is being deleted - awaiting f/w response.
 */
static void
bfa_rport_sm_fwdelete(struct bfa_rport_s *rp, enum bfa_rport_event event)
{
    bfa_trc(rp->bfa, rp->rport_tag);
    bfa_trc(rp->bfa, event);

    switch (event) {
    case BFA_RPORT_SM_FWRSP:
        bfa_stats(rp, sm_fwd_rsp);
        bfa_sm_set_state(rp, bfa_rport_sm_offline);
        bfa_rport_offline_cb(rp);
        break;

    case BFA_RPORT_SM_DELETE:
        bfa_stats(rp, sm_fwd_del);
        bfa_sm_set_state(rp, bfa_rport_sm_deleting);
        break;

    case BFA_RPORT_SM_HWFAIL:
        bfa_stats(rp, sm_fwd_hwf);
        bfa_sm_set_state(rp, bfa_rport_sm_iocdisable);
        bfa_rport_offline_cb(rp);
        break;

    default:
        bfa_stats(rp, sm_fwd_unexp);
        bfa_sm_fault(rp->bfa, event);
    }
}

static void
bfa_rport_sm_fwdelete_qfull(struct bfa_rport_s *rp, enum bfa_rport_event event)
{
    bfa_trc(rp->bfa, rp->rport_tag);
    bfa_trc(rp->bfa, event);

    switch (event) {
    case BFA_RPORT_SM_QRESUME:
        bfa_sm_set_state(rp, bfa_rport_sm_fwdelete);
        bfa_rport_send_fwdelete(rp);
        break;

    case BFA_RPORT_SM_DELETE:
        bfa_stats(rp, sm_fwd_del);
        bfa_sm_set_state(rp, bfa_rport_sm_deleting_qfull);
        break;

    case BFA_RPORT_SM_HWFAIL:
        bfa_stats(rp, sm_fwd_hwf);
        bfa_sm_set_state(rp, bfa_rport_sm_iocdisable);
        bfa_reqq_wcancel(&rp->reqq_wait);
        bfa_rport_offline_cb(rp);
        break;

    default:
        bfa_stats(rp, sm_fwd_unexp);
        bfa_sm_fault(rp->bfa, event);
    }
}

/*
 * Offline state.
 */
static void
bfa_rport_sm_offline(struct bfa_rport_s *rp, enum bfa_rport_event event)
{
    bfa_trc(rp->bfa, rp->rport_tag);
    bfa_trc(rp->bfa, event);

    switch (event) {
    case BFA_RPORT_SM_DELETE:
        bfa_stats(rp, sm_off_del);
        bfa_sm_set_state(rp, bfa_rport_sm_uninit);
        bfa_rport_free(rp);
        break;

    case BFA_RPORT_SM_ONLINE:
        bfa_stats(rp, sm_off_on);
        if (bfa_rport_send_fwcreate(rp))
            bfa_sm_set_state(rp, bfa_rport_sm_fwcreate);
        else
            bfa_sm_set_state(rp, bfa_rport_sm_fwcreate_qfull);
        break;

    case BFA_RPORT_SM_HWFAIL:
        bfa_stats(rp, sm_off_hwf);
        bfa_sm_set_state(rp, bfa_rport_sm_iocdisable);
        break;

    case BFA_RPORT_SM_OFFLINE:
        bfa_rport_offline_cb(rp);
        break;

    default:
        bfa_stats(rp, sm_off_unexp);
        bfa_sm_fault(rp->bfa, event);
    }
}

/*
 * Rport is deleted, waiting for firmware response to delete.
 */
static void
bfa_rport_sm_deleting(struct bfa_rport_s *rp, enum bfa_rport_event event)
{
    bfa_trc(rp->bfa, rp->rport_tag);
    bfa_trc(rp->bfa, event);

    switch (event) {
    case BFA_RPORT_SM_FWRSP:
        bfa_stats(rp, sm_del_fwrsp);
        bfa_sm_set_state(rp, bfa_rport_sm_uninit);
        bfa_rport_free(rp);
        break;

    case BFA_RPORT_SM_HWFAIL:
        bfa_stats(rp, sm_del_hwf);
        bfa_sm_set_state(rp, bfa_rport_sm_uninit);
        bfa_rport_free(rp);
        break;

    default:
        bfa_sm_fault(rp->bfa, event);
    }
}

static void
bfa_rport_sm_deleting_qfull(struct bfa_rport_s *rp, enum bfa_rport_event event)
{
    bfa_trc(rp->bfa, rp->rport_tag);
    bfa_trc(rp->bfa, event);

    switch (event) {
    case BFA_RPORT_SM_QRESUME:
        bfa_stats(rp, sm_del_fwrsp);
        bfa_sm_set_state(rp, bfa_rport_sm_deleting);
        bfa_rport_send_fwdelete(rp);
        break;

    case BFA_RPORT_SM_HWFAIL:
        bfa_stats(rp, sm_del_hwf);
        bfa_sm_set_state(rp, bfa_rport_sm_uninit);
        bfa_reqq_wcancel(&rp->reqq_wait);
        bfa_rport_free(rp);
        break;

    default:
        bfa_sm_fault(rp->bfa, event);
    }
}

/*
 * Waiting for rport create response from firmware. A delete is pending.
 */
static void
bfa_rport_sm_delete_pending(struct bfa_rport_s *rp,
                enum bfa_rport_event event)
{
    bfa_trc(rp->bfa, rp->rport_tag);
    bfa_trc(rp->bfa, event);

    switch (event) {
    case BFA_RPORT_SM_FWRSP:
        bfa_stats(rp, sm_delp_fwrsp);
        if (bfa_rport_send_fwdelete(rp))
            bfa_sm_set_state(rp, bfa_rport_sm_deleting);
        else
            bfa_sm_set_state(rp, bfa_rport_sm_deleting_qfull);
        break;

    case BFA_RPORT_SM_HWFAIL:
        bfa_stats(rp, sm_delp_hwf);
        bfa_sm_set_state(rp, bfa_rport_sm_uninit);
        bfa_rport_free(rp);
        break;

    default:
        bfa_stats(rp, sm_delp_unexp);
        bfa_sm_fault(rp->bfa, event);
    }
}

/*
 * Waiting for rport create response from firmware. Rport offline is pending.
 */
static void
bfa_rport_sm_offline_pending(struct bfa_rport_s *rp,
                 enum bfa_rport_event event)
{
    bfa_trc(rp->bfa, rp->rport_tag);
    bfa_trc(rp->bfa, event);

    switch (event) {
    case BFA_RPORT_SM_FWRSP:
        bfa_stats(rp, sm_offp_fwrsp);
        if (bfa_rport_send_fwdelete(rp))
            bfa_sm_set_state(rp, bfa_rport_sm_fwdelete);
        else
            bfa_sm_set_state(rp, bfa_rport_sm_fwdelete_qfull);
        break;

    case BFA_RPORT_SM_DELETE:
        bfa_stats(rp, sm_offp_del);
        bfa_sm_set_state(rp, bfa_rport_sm_delete_pending);
        break;

    case BFA_RPORT_SM_HWFAIL:
        bfa_stats(rp, sm_offp_hwf);
        bfa_sm_set_state(rp, bfa_rport_sm_iocdisable);
        bfa_rport_offline_cb(rp);
        break;

    default:
        bfa_stats(rp, sm_offp_unexp);
        bfa_sm_fault(rp->bfa, event);
    }
}

/*
 * IOC h/w failed.
 */
static void
bfa_rport_sm_iocdisable(struct bfa_rport_s *rp, enum bfa_rport_event event)
{
    bfa_trc(rp->bfa, rp->rport_tag);
    bfa_trc(rp->bfa, event);

    switch (event) {
    case BFA_RPORT_SM_OFFLINE:
        bfa_stats(rp, sm_iocd_off);
        bfa_rport_offline_cb(rp);
        break;

    case BFA_RPORT_SM_DELETE:
        bfa_stats(rp, sm_iocd_del);
        bfa_sm_set_state(rp, bfa_rport_sm_uninit);
        bfa_rport_free(rp);
        break;

    case BFA_RPORT_SM_ONLINE:
        bfa_stats(rp, sm_iocd_on);
        if (bfa_rport_send_fwcreate(rp))
            bfa_sm_set_state(rp, bfa_rport_sm_fwcreate);
        else
            bfa_sm_set_state(rp, bfa_rport_sm_fwcreate_qfull);
        break;

    case BFA_RPORT_SM_HWFAIL:
        break;

    default:
        bfa_stats(rp, sm_iocd_unexp);
        bfa_sm_fault(rp->bfa, event);
    }
}



/*
 *  bfa_rport_private BFA rport private functions
 */

static void
__bfa_cb_rport_online(void *cbarg, bfa_boolean_t complete)
{
    struct bfa_rport_s *rp = cbarg;

    if (complete)
        bfa_cb_rport_online(rp->rport_drv);
}

static void
__bfa_cb_rport_offline(void *cbarg, bfa_boolean_t complete)
{
    struct bfa_rport_s *rp = cbarg;

    if (complete)
        bfa_cb_rport_offline(rp->rport_drv);
}

static void
bfa_rport_qresume(void *cbarg)
{
    struct bfa_rport_s  *rp = cbarg;

    bfa_sm_send_event(rp, BFA_RPORT_SM_QRESUME);
}

static void
bfa_rport_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo,
        struct bfa_s *bfa)
{
    struct bfa_mem_kva_s *rport_kva = BFA_MEM_RPORT_KVA(bfa);

    if (cfg->fwcfg.num_rports < BFA_RPORT_MIN)
        cfg->fwcfg.num_rports = BFA_RPORT_MIN;

    /* kva memory */
    bfa_mem_kva_setup(minfo, rport_kva,
        cfg->fwcfg.num_rports * sizeof(struct bfa_rport_s));
}

static void
bfa_rport_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
        struct bfa_pcidev_s *pcidev)
{
    struct bfa_rport_mod_s *mod = BFA_RPORT_MOD(bfa);
    struct bfa_rport_s *rp;
    u16 i;

    INIT_LIST_HEAD(&mod->rp_free_q);
    INIT_LIST_HEAD(&mod->rp_active_q);
    INIT_LIST_HEAD(&mod->rp_unused_q);

    rp = (struct bfa_rport_s *) bfa_mem_kva_curp(mod);
    mod->rps_list = rp;
    mod->num_rports = cfg->fwcfg.num_rports;

    WARN_ON(!mod->num_rports ||
           (mod->num_rports & (mod->num_rports - 1)));

    for (i = 0; i < mod->num_rports; i++, rp++) {
        memset(rp, 0, sizeof(struct bfa_rport_s));
        rp->bfa = bfa;
        rp->rport_tag = i;
        bfa_sm_set_state(rp, bfa_rport_sm_uninit);

        /*
         *  - is unused
         */
        if (i)
            list_add_tail(&rp->qe, &mod->rp_free_q);

        bfa_reqq_winit(&rp->reqq_wait, bfa_rport_qresume, rp);
    }

    /*
     * consume memory
     */
    bfa_mem_kva_curp(mod) = (u8 *) rp;
}

static void
bfa_rport_detach(struct bfa_s *bfa)
{
}

static void
bfa_rport_start(struct bfa_s *bfa)
{
}

static void
bfa_rport_stop(struct bfa_s *bfa)
{
}

static void
bfa_rport_iocdisable(struct bfa_s *bfa)
{
    struct bfa_rport_mod_s *mod = BFA_RPORT_MOD(bfa);
    struct bfa_rport_s *rport;
    struct list_head *qe, *qen;

    /* Enqueue unused rport resources to free_q */
    list_splice_tail_init(&mod->rp_unused_q, &mod->rp_free_q);

    list_for_each_safe(qe, qen, &mod->rp_active_q) {
        rport = (struct bfa_rport_s *) qe;
        bfa_sm_send_event(rport, BFA_RPORT_SM_HWFAIL);
    }
}

static struct bfa_rport_s *
bfa_rport_alloc(struct bfa_rport_mod_s *mod)
{
    struct bfa_rport_s *rport;

    bfa_q_deq(&mod->rp_free_q, &rport);
    if (rport)
        list_add_tail(&rport->qe, &mod->rp_active_q);

    return rport;
}

static void
bfa_rport_free(struct bfa_rport_s *rport)
{
    struct bfa_rport_mod_s *mod = BFA_RPORT_MOD(rport->bfa);

    WARN_ON(!bfa_q_is_on_q(&mod->rp_active_q, rport));
    list_del(&rport->qe);
    list_add_tail(&rport->qe, &mod->rp_free_q);
}

static bfa_boolean_t
bfa_rport_send_fwcreate(struct bfa_rport_s *rp)
{
    struct bfi_rport_create_req_s *m;

    /*
     * check for room in queue to send request now
     */
    m = bfa_reqq_next(rp->bfa, BFA_REQQ_RPORT);
    if (!m) {
        bfa_reqq_wait(rp->bfa, BFA_REQQ_RPORT, &rp->reqq_wait);
        return BFA_FALSE;
    }

    bfi_h2i_set(m->mh, BFI_MC_RPORT, BFI_RPORT_H2I_CREATE_REQ,
            bfa_fn_lpu(rp->bfa));
    m->bfa_handle = rp->rport_tag;
    m->max_frmsz = cpu_to_be16(rp->rport_info.max_frmsz);
    m->pid = rp->rport_info.pid;
    m->lp_fwtag = bfa_lps_get_fwtag(rp->bfa, (u8)rp->rport_info.lp_tag);
    m->local_pid = rp->rport_info.local_pid;
    m->fc_class = rp->rport_info.fc_class;
    m->vf_en = rp->rport_info.vf_en;
    m->vf_id = rp->rport_info.vf_id;
    m->cisc = rp->rport_info.cisc;

    /*
     * queue I/O message to firmware
     */
    bfa_reqq_produce(rp->bfa, BFA_REQQ_RPORT, m->mh);
    return BFA_TRUE;
}

static bfa_boolean_t
bfa_rport_send_fwdelete(struct bfa_rport_s *rp)
{
    struct bfi_rport_delete_req_s *m;

    /*
     * check for room in queue to send request now
     */
    m = bfa_reqq_next(rp->bfa, BFA_REQQ_RPORT);
    if (!m) {
        bfa_reqq_wait(rp->bfa, BFA_REQQ_RPORT, &rp->reqq_wait);
        return BFA_FALSE;
    }

    bfi_h2i_set(m->mh, BFI_MC_RPORT, BFI_RPORT_H2I_DELETE_REQ,
            bfa_fn_lpu(rp->bfa));
    m->fw_handle = rp->fw_handle;

    /*
     * queue I/O message to firmware
     */
    bfa_reqq_produce(rp->bfa, BFA_REQQ_RPORT, m->mh);
    return BFA_TRUE;
}

static bfa_boolean_t
bfa_rport_send_fwspeed(struct bfa_rport_s *rp)
{
    struct bfa_rport_speed_req_s *m;

    /*
     * check for room in queue to send request now
     */
    m = bfa_reqq_next(rp->bfa, BFA_REQQ_RPORT);
    if (!m) {
        bfa_trc(rp->bfa, rp->rport_info.speed);
        return BFA_FALSE;
    }

    bfi_h2i_set(m->mh, BFI_MC_RPORT, BFI_RPORT_H2I_SET_SPEED_REQ,
            bfa_fn_lpu(rp->bfa));
    m->fw_handle = rp->fw_handle;
    m->speed = (u8)rp->rport_info.speed;

    /*
     * queue I/O message to firmware
     */
    bfa_reqq_produce(rp->bfa, BFA_REQQ_RPORT, m->mh);
    return BFA_TRUE;
}



/*
 *  bfa_rport_public
 */

/*
 * Rport interrupt processing.
 */
void
bfa_rport_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
{
    union bfi_rport_i2h_msg_u msg;
    struct bfa_rport_s *rp;

    bfa_trc(bfa, m->mhdr.msg_id);

    msg.msg = m;

    switch (m->mhdr.msg_id) {
    case BFI_RPORT_I2H_CREATE_RSP:
        rp = BFA_RPORT_FROM_TAG(bfa, msg.create_rsp->bfa_handle);
        rp->fw_handle = msg.create_rsp->fw_handle;
        rp->qos_attr = msg.create_rsp->qos_attr;
        bfa_rport_set_lunmask(bfa, rp);
        WARN_ON(msg.create_rsp->status != BFA_STATUS_OK);
        bfa_sm_send_event(rp, BFA_RPORT_SM_FWRSP);
        break;

    case BFI_RPORT_I2H_DELETE_RSP:
        rp = BFA_RPORT_FROM_TAG(bfa, msg.delete_rsp->bfa_handle);
        WARN_ON(msg.delete_rsp->status != BFA_STATUS_OK);
        bfa_rport_unset_lunmask(bfa, rp);
        bfa_sm_send_event(rp, BFA_RPORT_SM_FWRSP);
        break;

    case BFI_RPORT_I2H_QOS_SCN:
        rp = BFA_RPORT_FROM_TAG(bfa, msg.qos_scn_evt->bfa_handle);
        rp->event_arg.fw_msg = msg.qos_scn_evt;
        bfa_sm_send_event(rp, BFA_RPORT_SM_QOS_SCN);
        break;

    case BFI_RPORT_I2H_LIP_SCN_ONLINE:
        bfa_fcport_update_loop_info(BFA_FCPORT_MOD(bfa),
                &msg.lip_scn->loop_info);
        bfa_cb_rport_scn_online(bfa);
        break;

    case BFI_RPORT_I2H_LIP_SCN_OFFLINE:
        bfa_cb_rport_scn_offline(bfa);
        break;

    case BFI_RPORT_I2H_NO_DEV:
        rp = BFA_RPORT_FROM_TAG(bfa, msg.lip_scn->bfa_handle);
        bfa_cb_rport_scn_no_dev(rp->rport_drv);
        break;

    default:
        bfa_trc(bfa, m->mhdr.msg_id);
        WARN_ON(1);
    }
}

void
bfa_rport_res_recfg(struct bfa_s *bfa, u16 num_rport_fw)
{
    struct bfa_rport_mod_s  *mod = BFA_RPORT_MOD(bfa);
    struct list_head    *qe;
    int i;

    for (i = 0; i < (mod->num_rports - num_rport_fw); i++) {
        bfa_q_deq_tail(&mod->rp_free_q, &qe);
        list_add_tail(qe, &mod->rp_unused_q);
    }
}

/*
 *  bfa_rport_api
 */

struct bfa_rport_s *
bfa_rport_create(struct bfa_s *bfa, void *rport_drv)
{
    struct bfa_rport_s *rp;

    rp = bfa_rport_alloc(BFA_RPORT_MOD(bfa));

    if (rp == NULL)
        return NULL;

    rp->bfa = bfa;
    rp->rport_drv = rport_drv;
    memset(&rp->stats, 0, sizeof(rp->stats));

    WARN_ON(!bfa_sm_cmp_state(rp, bfa_rport_sm_uninit));
    bfa_sm_send_event(rp, BFA_RPORT_SM_CREATE);

    return rp;
}

void
bfa_rport_online(struct bfa_rport_s *rport, struct bfa_rport_info_s *rport_info)
{
    WARN_ON(rport_info->max_frmsz == 0);

    /*
     * Some JBODs are seen to be not setting PDU size correctly in PLOGI
     * responses. Default to minimum size.
     */
    if (rport_info->max_frmsz == 0) {
        bfa_trc(rport->bfa, rport->rport_tag);
        rport_info->max_frmsz = FC_MIN_PDUSZ;
    }

    rport->rport_info = *rport_info;
    bfa_sm_send_event(rport, BFA_RPORT_SM_ONLINE);
}

void
bfa_rport_speed(struct bfa_rport_s *rport, enum bfa_port_speed speed)
{
    WARN_ON(speed == 0);
    WARN_ON(speed == BFA_PORT_SPEED_AUTO);

    if (rport) {
        rport->rport_info.speed = speed;
        bfa_sm_send_event(rport, BFA_RPORT_SM_SET_SPEED);
    }
}

/* Set Rport LUN Mask */
void
bfa_rport_set_lunmask(struct bfa_s *bfa, struct bfa_rport_s *rp)
{
    struct bfa_lps_mod_s    *lps_mod = BFA_LPS_MOD(bfa);
    wwn_t   lp_wwn, rp_wwn;
    u8 lp_tag = (u8)rp->rport_info.lp_tag;

    rp_wwn = ((struct bfa_fcs_rport_s *)rp->rport_drv)->pwwn;
    lp_wwn = (BFA_LPS_FROM_TAG(lps_mod, rp->rport_info.lp_tag))->pwwn;

    BFA_LPS_FROM_TAG(lps_mod, rp->rport_info.lp_tag)->lun_mask =
                    rp->lun_mask = BFA_TRUE;
    bfa_fcpim_lunmask_rp_update(bfa, lp_wwn, rp_wwn, rp->rport_tag, lp_tag);
}

/* Unset Rport LUN mask */
void
bfa_rport_unset_lunmask(struct bfa_s *bfa, struct bfa_rport_s *rp)
{
    struct bfa_lps_mod_s    *lps_mod = BFA_LPS_MOD(bfa);
    wwn_t   lp_wwn, rp_wwn;

    rp_wwn = ((struct bfa_fcs_rport_s *)rp->rport_drv)->pwwn;
    lp_wwn = (BFA_LPS_FROM_TAG(lps_mod, rp->rport_info.lp_tag))->pwwn;

    BFA_LPS_FROM_TAG(lps_mod, rp->rport_info.lp_tag)->lun_mask =
                rp->lun_mask = BFA_FALSE;
    bfa_fcpim_lunmask_rp_update(bfa, lp_wwn, rp_wwn,
            BFA_RPORT_TAG_INVALID, BFA_LP_TAG_INVALID);
}

/*
 * SGPG related functions
 */

/*
 * Compute and return memory needed by FCP(im) module.
 */
static void
bfa_sgpg_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo,
        struct bfa_s *bfa)
{
    struct bfa_sgpg_mod_s *sgpg_mod = BFA_SGPG_MOD(bfa);
    struct bfa_mem_kva_s *sgpg_kva = BFA_MEM_SGPG_KVA(bfa);
    struct bfa_mem_dma_s *seg_ptr;
    u16 nsegs, idx, per_seg_sgpg, num_sgpg;
    u32 sgpg_sz = sizeof(struct bfi_sgpg_s);

    if (cfg->drvcfg.num_sgpgs < BFA_SGPG_MIN)
        cfg->drvcfg.num_sgpgs = BFA_SGPG_MIN;
    else if (cfg->drvcfg.num_sgpgs > BFA_SGPG_MAX)
        cfg->drvcfg.num_sgpgs = BFA_SGPG_MAX;

    num_sgpg = cfg->drvcfg.num_sgpgs;

    nsegs = BFI_MEM_DMA_NSEGS(num_sgpg, sgpg_sz);
    per_seg_sgpg = BFI_MEM_NREQS_SEG(sgpg_sz);

    bfa_mem_dma_seg_iter(sgpg_mod, seg_ptr, nsegs, idx) {
        if (num_sgpg >= per_seg_sgpg) {
            num_sgpg -= per_seg_sgpg;
            bfa_mem_dma_setup(minfo, seg_ptr,
                    per_seg_sgpg * sgpg_sz);
        } else
            bfa_mem_dma_setup(minfo, seg_ptr,
                    num_sgpg * sgpg_sz);
    }

    /* kva memory */
    bfa_mem_kva_setup(minfo, sgpg_kva,
        cfg->drvcfg.num_sgpgs * sizeof(struct bfa_sgpg_s));
}

static void
bfa_sgpg_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
        struct bfa_pcidev_s *pcidev)
{
    struct bfa_sgpg_mod_s *mod = BFA_SGPG_MOD(bfa);
    struct bfa_sgpg_s *hsgpg;
    struct bfi_sgpg_s *sgpg;
    u64 align_len;
    struct bfa_mem_dma_s *seg_ptr;
    u32 sgpg_sz = sizeof(struct bfi_sgpg_s);
    u16 i, idx, nsegs, per_seg_sgpg, num_sgpg;

    union {
        u64 pa;
        union bfi_addr_u addr;
    } sgpg_pa, sgpg_pa_tmp;

    INIT_LIST_HEAD(&mod->sgpg_q);
    INIT_LIST_HEAD(&mod->sgpg_wait_q);

    bfa_trc(bfa, cfg->drvcfg.num_sgpgs);

    mod->free_sgpgs = mod->num_sgpgs = cfg->drvcfg.num_sgpgs;

    num_sgpg = cfg->drvcfg.num_sgpgs;
    nsegs = BFI_MEM_DMA_NSEGS(num_sgpg, sgpg_sz);

    /* dma/kva mem claim */
    hsgpg = (struct bfa_sgpg_s *) bfa_mem_kva_curp(mod);

    bfa_mem_dma_seg_iter(mod, seg_ptr, nsegs, idx) {

        if (!bfa_mem_dma_virt(seg_ptr))
            break;

        align_len = BFA_SGPG_ROUNDUP(bfa_mem_dma_phys(seg_ptr)) -
                         bfa_mem_dma_phys(seg_ptr);

        sgpg = (struct bfi_sgpg_s *)
            (((u8 *) bfa_mem_dma_virt(seg_ptr)) + align_len);
        sgpg_pa.pa = bfa_mem_dma_phys(seg_ptr) + align_len;
        WARN_ON(sgpg_pa.pa & (sgpg_sz - 1));

        per_seg_sgpg = (seg_ptr->mem_len - (u32)align_len) / sgpg_sz;

        for (i = 0; num_sgpg > 0 && i < per_seg_sgpg; i++, num_sgpg--) {
            memset(hsgpg, 0, sizeof(*hsgpg));
            memset(sgpg, 0, sizeof(*sgpg));

            hsgpg->sgpg = sgpg;
            sgpg_pa_tmp.pa = bfa_sgaddr_le(sgpg_pa.pa);
            hsgpg->sgpg_pa = sgpg_pa_tmp.addr;
            list_add_tail(&hsgpg->qe, &mod->sgpg_q);

            sgpg++;
            hsgpg++;
            sgpg_pa.pa += sgpg_sz;
        }
    }

    bfa_mem_kva_curp(mod) = (u8 *) hsgpg;
}

static void
bfa_sgpg_detach(struct bfa_s *bfa)
{
}

static void
bfa_sgpg_start(struct bfa_s *bfa)
{
}

static void
bfa_sgpg_stop(struct bfa_s *bfa)
{
}

static void
bfa_sgpg_iocdisable(struct bfa_s *bfa)
{
}

bfa_status_t
bfa_sgpg_malloc(struct bfa_s *bfa, struct list_head *sgpg_q, int nsgpgs)
{
    struct bfa_sgpg_mod_s *mod = BFA_SGPG_MOD(bfa);
    struct bfa_sgpg_s *hsgpg;
    int i;

    if (mod->free_sgpgs < nsgpgs)
        return BFA_STATUS_ENOMEM;

    for (i = 0; i < nsgpgs; i++) {
        bfa_q_deq(&mod->sgpg_q, &hsgpg);
        WARN_ON(!hsgpg);
        list_add_tail(&hsgpg->qe, sgpg_q);
    }

    mod->free_sgpgs -= nsgpgs;
    return BFA_STATUS_OK;
}

void
bfa_sgpg_mfree(struct bfa_s *bfa, struct list_head *sgpg_q, int nsgpg)
{
    struct bfa_sgpg_mod_s *mod = BFA_SGPG_MOD(bfa);
    struct bfa_sgpg_wqe_s *wqe;

    mod->free_sgpgs += nsgpg;
    WARN_ON(mod->free_sgpgs > mod->num_sgpgs);

    list_splice_tail_init(sgpg_q, &mod->sgpg_q);

    if (list_empty(&mod->sgpg_wait_q))
        return;

    /*
     * satisfy as many waiting requests as possible
     */
    do {
        wqe = bfa_q_first(&mod->sgpg_wait_q);
        if (mod->free_sgpgs < wqe->nsgpg)
            nsgpg = mod->free_sgpgs;
        else
            nsgpg = wqe->nsgpg;
        bfa_sgpg_malloc(bfa, &wqe->sgpg_q, nsgpg);
        wqe->nsgpg -= nsgpg;
        if (wqe->nsgpg == 0) {
            list_del(&wqe->qe);
            wqe->cbfn(wqe->cbarg);
        }
    } while (mod->free_sgpgs && !list_empty(&mod->sgpg_wait_q));
}

void
bfa_sgpg_wait(struct bfa_s *bfa, struct bfa_sgpg_wqe_s *wqe, int nsgpg)
{
    struct bfa_sgpg_mod_s *mod = BFA_SGPG_MOD(bfa);

    WARN_ON(nsgpg <= 0);
    WARN_ON(nsgpg <= mod->free_sgpgs);

    wqe->nsgpg_total = wqe->nsgpg = nsgpg;

    /*
     * allocate any left to this one first
     */
    if (mod->free_sgpgs) {
        /*
         * no one else is waiting for SGPG
         */
        WARN_ON(!list_empty(&mod->sgpg_wait_q));
        list_splice_tail_init(&mod->sgpg_q, &wqe->sgpg_q);
        wqe->nsgpg -= mod->free_sgpgs;
        mod->free_sgpgs = 0;
    }

    list_add_tail(&wqe->qe, &mod->sgpg_wait_q);
}

void
bfa_sgpg_wcancel(struct bfa_s *bfa, struct bfa_sgpg_wqe_s *wqe)
{
    struct bfa_sgpg_mod_s *mod = BFA_SGPG_MOD(bfa);

    WARN_ON(!bfa_q_is_on_q(&mod->sgpg_wait_q, wqe));
    list_del(&wqe->qe);

    if (wqe->nsgpg_total != wqe->nsgpg)
        bfa_sgpg_mfree(bfa, &wqe->sgpg_q,
                   wqe->nsgpg_total - wqe->nsgpg);
}

void
bfa_sgpg_winit(struct bfa_sgpg_wqe_s *wqe, void (*cbfn) (void *cbarg),
           void *cbarg)
{
    INIT_LIST_HEAD(&wqe->sgpg_q);
    wqe->cbfn = cbfn;
    wqe->cbarg = cbarg;
}

/*
 *  UF related functions
 */
/*
 *****************************************************************************
 * Internal functions
 *****************************************************************************
 */
static void
__bfa_cb_uf_recv(void *cbarg, bfa_boolean_t complete)
{
    struct bfa_uf_s   *uf = cbarg;
    struct bfa_uf_mod_s *ufm = BFA_UF_MOD(uf->bfa);

    if (complete)
        ufm->ufrecv(ufm->cbarg, uf);
}

static void
claim_uf_post_msgs(struct bfa_uf_mod_s *ufm)
{
    struct bfi_uf_buf_post_s *uf_bp_msg;
    u16 i;
    u16 buf_len;

    ufm->uf_buf_posts = (struct bfi_uf_buf_post_s *) bfa_mem_kva_curp(ufm);
    uf_bp_msg = ufm->uf_buf_posts;

    for (i = 0, uf_bp_msg = ufm->uf_buf_posts; i < ufm->num_ufs;
         i++, uf_bp_msg++) {
        memset(uf_bp_msg, 0, sizeof(struct bfi_uf_buf_post_s));

        uf_bp_msg->buf_tag = i;
        buf_len = sizeof(struct bfa_uf_buf_s);
        uf_bp_msg->buf_len = cpu_to_be16(buf_len);
        bfi_h2i_set(uf_bp_msg->mh, BFI_MC_UF, BFI_UF_H2I_BUF_POST,
                bfa_fn_lpu(ufm->bfa));
        bfa_alen_set(&uf_bp_msg->alen, buf_len, ufm_pbs_pa(ufm, i));
    }

    /*
     * advance pointer beyond consumed memory
     */
    bfa_mem_kva_curp(ufm) = (u8 *) uf_bp_msg;
}

static void
claim_ufs(struct bfa_uf_mod_s *ufm)
{
    u16 i;
    struct bfa_uf_s   *uf;

    /*
     * Claim block of memory for UF list
     */
    ufm->uf_list = (struct bfa_uf_s *) bfa_mem_kva_curp(ufm);

    /*
     * Initialize UFs and queue it in UF free queue
     */
    for (i = 0, uf = ufm->uf_list; i < ufm->num_ufs; i++, uf++) {
        memset(uf, 0, sizeof(struct bfa_uf_s));
        uf->bfa = ufm->bfa;
        uf->uf_tag = i;
        uf->pb_len = BFA_PER_UF_DMA_SZ;
        uf->buf_kva = bfa_mem_get_dmabuf_kva(ufm, i, BFA_PER_UF_DMA_SZ);
        uf->buf_pa = ufm_pbs_pa(ufm, i);
        list_add_tail(&uf->qe, &ufm->uf_free_q);
    }

    /*
     * advance memory pointer
     */
    bfa_mem_kva_curp(ufm) = (u8 *) uf;
}

static void
uf_mem_claim(struct bfa_uf_mod_s *ufm)
{
    claim_ufs(ufm);
    claim_uf_post_msgs(ufm);
}

static void
bfa_uf_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo,
        struct bfa_s *bfa)
{
    struct bfa_uf_mod_s *ufm = BFA_UF_MOD(bfa);
    struct bfa_mem_kva_s *uf_kva = BFA_MEM_UF_KVA(bfa);
    u32 num_ufs = cfg->fwcfg.num_uf_bufs;
    struct bfa_mem_dma_s *seg_ptr;
    u16 nsegs, idx, per_seg_uf = 0;

    nsegs = BFI_MEM_DMA_NSEGS(num_ufs, BFA_PER_UF_DMA_SZ);
    per_seg_uf = BFI_MEM_NREQS_SEG(BFA_PER_UF_DMA_SZ);

    bfa_mem_dma_seg_iter(ufm, seg_ptr, nsegs, idx) {
        if (num_ufs >= per_seg_uf) {
            num_ufs -= per_seg_uf;
            bfa_mem_dma_setup(minfo, seg_ptr,
                per_seg_uf * BFA_PER_UF_DMA_SZ);
        } else
            bfa_mem_dma_setup(minfo, seg_ptr,
                num_ufs * BFA_PER_UF_DMA_SZ);
    }

    /* kva memory */
    bfa_mem_kva_setup(minfo, uf_kva, cfg->fwcfg.num_uf_bufs *
        (sizeof(struct bfa_uf_s) + sizeof(struct bfi_uf_buf_post_s)));
}

static void
bfa_uf_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
        struct bfa_pcidev_s *pcidev)
{
    struct bfa_uf_mod_s *ufm = BFA_UF_MOD(bfa);

    ufm->bfa = bfa;
    ufm->num_ufs = cfg->fwcfg.num_uf_bufs;
    INIT_LIST_HEAD(&ufm->uf_free_q);
    INIT_LIST_HEAD(&ufm->uf_posted_q);
    INIT_LIST_HEAD(&ufm->uf_unused_q);

    uf_mem_claim(ufm);
}

static void
bfa_uf_detach(struct bfa_s *bfa)
{
}

static struct bfa_uf_s *
bfa_uf_get(struct bfa_uf_mod_s *uf_mod)
{
    struct bfa_uf_s   *uf;

    bfa_q_deq(&uf_mod->uf_free_q, &uf);
    return uf;
}

static void
bfa_uf_put(struct bfa_uf_mod_s *uf_mod, struct bfa_uf_s *uf)
{
    list_add_tail(&uf->qe, &uf_mod->uf_free_q);
}

static bfa_status_t
bfa_uf_post(struct bfa_uf_mod_s *ufm, struct bfa_uf_s *uf)
{
    struct bfi_uf_buf_post_s *uf_post_msg;

    uf_post_msg = bfa_reqq_next(ufm->bfa, BFA_REQQ_FCXP);
    if (!uf_post_msg)
        return BFA_STATUS_FAILED;

    memcpy(uf_post_msg, &ufm->uf_buf_posts[uf->uf_tag],
              sizeof(struct bfi_uf_buf_post_s));
    bfa_reqq_produce(ufm->bfa, BFA_REQQ_FCXP, uf_post_msg->mh);

    bfa_trc(ufm->bfa, uf->uf_tag);

    list_add_tail(&uf->qe, &ufm->uf_posted_q);
    return BFA_STATUS_OK;
}

static void
bfa_uf_post_all(struct bfa_uf_mod_s *uf_mod)
{
    struct bfa_uf_s   *uf;

    while ((uf = bfa_uf_get(uf_mod)) != NULL) {
        if (bfa_uf_post(uf_mod, uf) != BFA_STATUS_OK)
            break;
    }
}

static void
uf_recv(struct bfa_s *bfa, struct bfi_uf_frm_rcvd_s *m)
{
    struct bfa_uf_mod_s *ufm = BFA_UF_MOD(bfa);
    u16 uf_tag = m->buf_tag;
    struct bfa_uf_s *uf = &ufm->uf_list[uf_tag];
    struct bfa_uf_buf_s *uf_buf;
    uint8_t *buf;
    struct fchs_s *fchs;

    uf_buf = (struct bfa_uf_buf_s *)
            bfa_mem_get_dmabuf_kva(ufm, uf_tag, uf->pb_len);
    buf = &uf_buf->d[0];

    m->frm_len = be16_to_cpu(m->frm_len);
    m->xfr_len = be16_to_cpu(m->xfr_len);

    fchs = (struct fchs_s *)uf_buf;

    list_del(&uf->qe);  /* dequeue from posted queue */

    uf->data_ptr = buf;
    uf->data_len = m->xfr_len;

    WARN_ON(uf->data_len < sizeof(struct fchs_s));

    if (uf->data_len == sizeof(struct fchs_s)) {
        bfa_plog_fchdr(bfa->plog, BFA_PL_MID_HAL_UF, BFA_PL_EID_RX,
                   uf->data_len, (struct fchs_s *)buf);
    } else {
        u32 pld_w0 = *((u32 *) (buf + sizeof(struct fchs_s)));
        bfa_plog_fchdr_and_pl(bfa->plog, BFA_PL_MID_HAL_UF,
                      BFA_PL_EID_RX, uf->data_len,
                      (struct fchs_s *)buf, pld_w0);
    }

    if (bfa->fcs)
        __bfa_cb_uf_recv(uf, BFA_TRUE);
    else
        bfa_cb_queue(bfa, &uf->hcb_qe, __bfa_cb_uf_recv, uf);
}

static void
bfa_uf_stop(struct bfa_s *bfa)
{
}

static void
bfa_uf_iocdisable(struct bfa_s *bfa)
{
    struct bfa_uf_mod_s *ufm = BFA_UF_MOD(bfa);
    struct bfa_uf_s *uf;
    struct list_head *qe, *qen;

    /* Enqueue unused uf resources to free_q */
    list_splice_tail_init(&ufm->uf_unused_q, &ufm->uf_free_q);

    list_for_each_safe(qe, qen, &ufm->uf_posted_q) {
        uf = (struct bfa_uf_s *) qe;
        list_del(&uf->qe);
        bfa_uf_put(ufm, uf);
    }
}

static void
bfa_uf_start(struct bfa_s *bfa)
{
    bfa_uf_post_all(BFA_UF_MOD(bfa));
}

/*
 * Register handler for all unsolicted receive frames.
 *
 * @param[in]   bfa     BFA instance
 * @param[in]   ufrecv  receive handler function
 * @param[in]   cbarg   receive handler arg
 */
void
bfa_uf_recv_register(struct bfa_s *bfa, bfa_cb_uf_recv_t ufrecv, void *cbarg)
{
    struct bfa_uf_mod_s *ufm = BFA_UF_MOD(bfa);

    ufm->ufrecv = ufrecv;
    ufm->cbarg = cbarg;
}

/*
 *  Free an unsolicited frame back to BFA.
 *
 * @param[in]       uf      unsolicited frame to be freed
 *
 * @return None
 */
void
bfa_uf_free(struct bfa_uf_s *uf)
{
    bfa_uf_put(BFA_UF_MOD(uf->bfa), uf);
    bfa_uf_post_all(BFA_UF_MOD(uf->bfa));
}



/*
 *  uf_pub BFA uf module public functions
 */
void
bfa_uf_isr(struct bfa_s *bfa, struct bfi_msg_s *msg)
{
    bfa_trc(bfa, msg->mhdr.msg_id);

    switch (msg->mhdr.msg_id) {
    case BFI_UF_I2H_FRM_RCVD:
        uf_recv(bfa, (struct bfi_uf_frm_rcvd_s *) msg);
        break;

    default:
        bfa_trc(bfa, msg->mhdr.msg_id);
        WARN_ON(1);
    }
}

void
bfa_uf_res_recfg(struct bfa_s *bfa, u16 num_uf_fw)
{
    struct bfa_uf_mod_s *mod = BFA_UF_MOD(bfa);
    struct list_head    *qe;
    int i;

    for (i = 0; i < (mod->num_ufs - num_uf_fw); i++) {
        bfa_q_deq_tail(&mod->uf_free_q, &qe);
        list_add_tail(qe, &mod->uf_unused_q);
    }
}

/*
 *  Dport forward declaration
 */

/*
 * BFA DPORT state machine events
 */
enum bfa_dport_sm_event {
    BFA_DPORT_SM_ENABLE = 1,    /* dport enable event         */
    BFA_DPORT_SM_DISABLE    = 2,    /* dport disable event        */
    BFA_DPORT_SM_FWRSP      = 3,    /* fw enable/disable rsp      */
    BFA_DPORT_SM_QRESUME    = 4,    /* CQ space available         */
    BFA_DPORT_SM_HWFAIL     = 5,    /* IOC h/w failure            */
};

static void bfa_dport_sm_disabled(struct bfa_dport_s *dport,
                  enum bfa_dport_sm_event event);
static void bfa_dport_sm_enabling_qwait(struct bfa_dport_s *dport,
                  enum bfa_dport_sm_event event);
static void bfa_dport_sm_enabling(struct bfa_dport_s *dport,
                  enum bfa_dport_sm_event event);
static void bfa_dport_sm_enabled(struct bfa_dport_s *dport,
                 enum bfa_dport_sm_event event);
static void bfa_dport_sm_disabling_qwait(struct bfa_dport_s *dport,
                 enum bfa_dport_sm_event event);
static void bfa_dport_sm_disabling(struct bfa_dport_s *dport,
                   enum bfa_dport_sm_event event);
static void bfa_dport_qresume(void *cbarg);
static void bfa_dport_req_comp(struct bfa_dport_s *dport,
                   bfi_diag_dport_rsp_t *msg);

/*
 *  BFA fcdiag module
 */
#define BFA_DIAG_QTEST_TOV  1000    /* msec */

/*
 *  Set port status to busy
 */
static void
bfa_fcdiag_set_busy_status(struct bfa_fcdiag_s *fcdiag)
{
    struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(fcdiag->bfa);

    if (fcdiag->lb.lock)
        fcport->diag_busy = BFA_TRUE;
    else
        fcport->diag_busy = BFA_FALSE;
}

static void
bfa_fcdiag_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *meminfo,
        struct bfa_s *bfa)
{
}

static void
bfa_fcdiag_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
        struct bfa_pcidev_s *pcidev)
{
    struct bfa_fcdiag_s *fcdiag = BFA_FCDIAG_MOD(bfa);
    struct bfa_dport_s  *dport = &fcdiag->dport;

    fcdiag->bfa             = bfa;
    fcdiag->trcmod  = bfa->trcmod;
    /* The common DIAG attach bfa_diag_attach() will do all memory claim */
    dport->bfa = bfa;
    bfa_sm_set_state(dport, bfa_dport_sm_disabled);
    bfa_reqq_winit(&dport->reqq_wait, bfa_dport_qresume, dport);
    dport->cbfn = NULL;
    dport->cbarg = NULL;
}

static void
bfa_fcdiag_iocdisable(struct bfa_s *bfa)
{
    struct bfa_fcdiag_s *fcdiag = BFA_FCDIAG_MOD(bfa);
    struct bfa_dport_s *dport = &fcdiag->dport;

    bfa_trc(fcdiag, fcdiag->lb.lock);
    if (fcdiag->lb.lock) {
        fcdiag->lb.status = BFA_STATUS_IOC_FAILURE;
        fcdiag->lb.cbfn(fcdiag->lb.cbarg, fcdiag->lb.status);
        fcdiag->lb.lock = 0;
        bfa_fcdiag_set_busy_status(fcdiag);
    }

    bfa_sm_send_event(dport, BFA_DPORT_SM_HWFAIL);
}

static void
bfa_fcdiag_detach(struct bfa_s *bfa)
{
}

static void
bfa_fcdiag_start(struct bfa_s *bfa)
{
}

static void
bfa_fcdiag_stop(struct bfa_s *bfa)
{
}

static void
bfa_fcdiag_queuetest_timeout(void *cbarg)
{
    struct bfa_fcdiag_s       *fcdiag = cbarg;
    struct bfa_diag_qtest_result_s *res = fcdiag->qtest.result;

    bfa_trc(fcdiag, fcdiag->qtest.all);
    bfa_trc(fcdiag, fcdiag->qtest.count);

    fcdiag->qtest.timer_active = 0;

    res->status = BFA_STATUS_ETIMER;
    res->count  = QTEST_CNT_DEFAULT - fcdiag->qtest.count;
    if (fcdiag->qtest.all)
        res->queue  = fcdiag->qtest.all;

    bfa_trc(fcdiag, BFA_STATUS_ETIMER);
    fcdiag->qtest.status = BFA_STATUS_ETIMER;
    fcdiag->qtest.cbfn(fcdiag->qtest.cbarg, fcdiag->qtest.status);
    fcdiag->qtest.lock = 0;
}

static bfa_status_t
bfa_fcdiag_queuetest_send(struct bfa_fcdiag_s *fcdiag)
{
    u32 i;
    struct bfi_diag_qtest_req_s *req;

    req = bfa_reqq_next(fcdiag->bfa, fcdiag->qtest.queue);
    if (!req)
        return BFA_STATUS_DEVBUSY;

    /* build host command */
    bfi_h2i_set(req->mh, BFI_MC_DIAG, BFI_DIAG_H2I_QTEST,
        bfa_fn_lpu(fcdiag->bfa));

    for (i = 0; i < BFI_LMSG_PL_WSZ; i++)
        req->data[i] = QTEST_PAT_DEFAULT;

    bfa_trc(fcdiag, fcdiag->qtest.queue);
    /* ring door bell */
    bfa_reqq_produce(fcdiag->bfa, fcdiag->qtest.queue, req->mh);
    return BFA_STATUS_OK;
}

static void
bfa_fcdiag_queuetest_comp(struct bfa_fcdiag_s *fcdiag,
            bfi_diag_qtest_rsp_t *rsp)
{
    struct bfa_diag_qtest_result_s *res = fcdiag->qtest.result;
    bfa_status_t status = BFA_STATUS_OK;
    int i;

    /* Check timer, should still be active   */
    if (!fcdiag->qtest.timer_active) {
        bfa_trc(fcdiag, fcdiag->qtest.timer_active);
        return;
    }

    /* update count */
    fcdiag->qtest.count--;

    /* Check result */
    for (i = 0; i < BFI_LMSG_PL_WSZ; i++) {
        if (rsp->data[i] != ~(QTEST_PAT_DEFAULT)) {
            res->status = BFA_STATUS_DATACORRUPTED;
            break;
        }
    }

    if (res->status == BFA_STATUS_OK) {
        if (fcdiag->qtest.count > 0) {
            status = bfa_fcdiag_queuetest_send(fcdiag);
            if (status == BFA_STATUS_OK)
                return;
            else
                res->status = status;
        } else if (fcdiag->qtest.all > 0 &&
            fcdiag->qtest.queue < (BFI_IOC_MAX_CQS - 1)) {
            fcdiag->qtest.count = QTEST_CNT_DEFAULT;
            fcdiag->qtest.queue++;
            status = bfa_fcdiag_queuetest_send(fcdiag);
            if (status == BFA_STATUS_OK)
                return;
            else
                res->status = status;
        }
    }

    /* Stop timer when we comp all queue */
    if (fcdiag->qtest.timer_active) {
        bfa_timer_stop(&fcdiag->qtest.timer);
        fcdiag->qtest.timer_active = 0;
    }
    res->queue = fcdiag->qtest.queue;
    res->count = QTEST_CNT_DEFAULT - fcdiag->qtest.count;
    bfa_trc(fcdiag, res->count);
    bfa_trc(fcdiag, res->status);
    fcdiag->qtest.status = res->status;
    fcdiag->qtest.cbfn(fcdiag->qtest.cbarg, fcdiag->qtest.status);
    fcdiag->qtest.lock = 0;
}

static void
bfa_fcdiag_loopback_comp(struct bfa_fcdiag_s *fcdiag,
            struct bfi_diag_lb_rsp_s *rsp)
{
    struct bfa_diag_loopback_result_s *res = fcdiag->lb.result;

    res->numtxmfrm  = be32_to_cpu(rsp->res.numtxmfrm);
    res->numosffrm  = be32_to_cpu(rsp->res.numosffrm);
    res->numrcvfrm  = be32_to_cpu(rsp->res.numrcvfrm);
    res->badfrminf  = be32_to_cpu(rsp->res.badfrminf);
    res->badfrmnum  = be32_to_cpu(rsp->res.badfrmnum);
    res->status     = rsp->res.status;
    fcdiag->lb.status = rsp->res.status;
    bfa_trc(fcdiag, fcdiag->lb.status);
    fcdiag->lb.cbfn(fcdiag->lb.cbarg, fcdiag->lb.status);
    fcdiag->lb.lock = 0;
    bfa_fcdiag_set_busy_status(fcdiag);
}

static bfa_status_t
bfa_fcdiag_loopback_send(struct bfa_fcdiag_s *fcdiag,
            struct bfa_diag_loopback_s *loopback)
{
    struct bfi_diag_lb_req_s *lb_req;

    lb_req = bfa_reqq_next(fcdiag->bfa, BFA_REQQ_DIAG);
    if (!lb_req)
        return BFA_STATUS_DEVBUSY;

    /* build host command */
    bfi_h2i_set(lb_req->mh, BFI_MC_DIAG, BFI_DIAG_H2I_LOOPBACK,
        bfa_fn_lpu(fcdiag->bfa));

    lb_req->lb_mode = loopback->lb_mode;
    lb_req->speed = loopback->speed;
    lb_req->loopcnt = loopback->loopcnt;
    lb_req->pattern = loopback->pattern;

    /* ring door bell */
    bfa_reqq_produce(fcdiag->bfa, BFA_REQQ_DIAG, lb_req->mh);

    bfa_trc(fcdiag, loopback->lb_mode);
    bfa_trc(fcdiag, loopback->speed);
    bfa_trc(fcdiag, loopback->loopcnt);
    bfa_trc(fcdiag, loopback->pattern);
    return BFA_STATUS_OK;
}

/*
 *  cpe/rme intr handler
 */
void
bfa_fcdiag_intr(struct bfa_s *bfa, struct bfi_msg_s *msg)
{
    struct bfa_fcdiag_s *fcdiag = BFA_FCDIAG_MOD(bfa);

    switch (msg->mhdr.msg_id) {
    case BFI_DIAG_I2H_LOOPBACK:
        bfa_fcdiag_loopback_comp(fcdiag,
                (struct bfi_diag_lb_rsp_s *) msg);
        break;
    case BFI_DIAG_I2H_QTEST:
        bfa_fcdiag_queuetest_comp(fcdiag, (bfi_diag_qtest_rsp_t *)msg);
        break;
    case BFI_DIAG_I2H_DPORT:
        bfa_dport_req_comp(&fcdiag->dport, (bfi_diag_dport_rsp_t *)msg);
        break;
    default:
        bfa_trc(fcdiag, msg->mhdr.msg_id);
        WARN_ON(1);
    }
}

/*
 *  Loopback test
 *
 *   @param[in] *bfa            - bfa data struct
 *   @param[in] opmode          - port operation mode
 *   @param[in] speed           - port speed
 *   @param[in] lpcnt           - loop count
 *   @param[in] pat                     - pattern to build packet
 *   @param[in] *result         - pt to bfa_diag_loopback_result_t data struct
 *   @param[in] cbfn            - callback function
 *   @param[in] cbarg           - callback functioin arg
 *
 *   @param[out]
 */
bfa_status_t
bfa_fcdiag_loopback(struct bfa_s *bfa, enum bfa_port_opmode opmode,
        enum bfa_port_speed speed, u32 lpcnt, u32 pat,
        struct bfa_diag_loopback_result_s *result, bfa_cb_diag_t cbfn,
        void *cbarg)
{
    struct  bfa_diag_loopback_s loopback;
    struct bfa_port_attr_s attr;
    bfa_status_t status;
    struct bfa_fcdiag_s *fcdiag = BFA_FCDIAG_MOD(bfa);

    if (!bfa_iocfc_is_operational(bfa))
        return BFA_STATUS_IOC_NON_OP;

    /* if port is PBC disabled, return error */
    if (bfa_fcport_is_pbcdisabled(bfa)) {
        bfa_trc(fcdiag, BFA_STATUS_PBC);
        return BFA_STATUS_PBC;
    }

    if (bfa_fcport_is_disabled(bfa) == BFA_FALSE) {
        bfa_trc(fcdiag, opmode);
        return BFA_STATUS_PORT_NOT_DISABLED;
    }

    /*
     * Check if input speed is supported by the port mode
     */
    if (bfa_ioc_get_type(&bfa->ioc) == BFA_IOC_TYPE_FC) {
        if (!(speed == BFA_PORT_SPEED_1GBPS ||
              speed == BFA_PORT_SPEED_2GBPS ||
              speed == BFA_PORT_SPEED_4GBPS ||
              speed == BFA_PORT_SPEED_8GBPS ||
              speed == BFA_PORT_SPEED_16GBPS ||
              speed == BFA_PORT_SPEED_AUTO)) {
            bfa_trc(fcdiag, speed);
            return BFA_STATUS_UNSUPP_SPEED;
        }
        bfa_fcport_get_attr(bfa, &attr);
        bfa_trc(fcdiag, attr.speed_supported);
        if (speed > attr.speed_supported)
            return BFA_STATUS_UNSUPP_SPEED;
    } else {
        if (speed != BFA_PORT_SPEED_10GBPS) {
            bfa_trc(fcdiag, speed);
            return BFA_STATUS_UNSUPP_SPEED;
        }
    }

    /*
     * For CT2, 1G is not supported
     */
    if ((speed == BFA_PORT_SPEED_1GBPS) &&
        (bfa_asic_id_ct2(bfa->ioc.pcidev.device_id))) {
        bfa_trc(fcdiag, speed);
        return BFA_STATUS_UNSUPP_SPEED;
    }

    /* For Mezz card, port speed entered needs to be checked */
    if (bfa_mfg_is_mezz(bfa->ioc.attr->card_type)) {
        if (bfa_ioc_get_type(&bfa->ioc) == BFA_IOC_TYPE_FC) {
            if (!(speed == BFA_PORT_SPEED_1GBPS ||
                  speed == BFA_PORT_SPEED_2GBPS ||
                  speed == BFA_PORT_SPEED_4GBPS ||
                  speed == BFA_PORT_SPEED_8GBPS ||
                  speed == BFA_PORT_SPEED_16GBPS ||
                  speed == BFA_PORT_SPEED_AUTO))
                return BFA_STATUS_UNSUPP_SPEED;
        } else {
            if (speed != BFA_PORT_SPEED_10GBPS)
                return BFA_STATUS_UNSUPP_SPEED;
        }
    }

    /* check to see if there is another destructive diag cmd running */
    if (fcdiag->lb.lock) {
        bfa_trc(fcdiag, fcdiag->lb.lock);
        return BFA_STATUS_DEVBUSY;
    }

    fcdiag->lb.lock = 1;
    loopback.lb_mode = opmode;
    loopback.speed = speed;
    loopback.loopcnt = lpcnt;
    loopback.pattern = pat;
    fcdiag->lb.result = result;
    fcdiag->lb.cbfn = cbfn;
    fcdiag->lb.cbarg = cbarg;
    memset(result, 0, sizeof(struct bfa_diag_loopback_result_s));
    bfa_fcdiag_set_busy_status(fcdiag);

    /* Send msg to fw */
    status = bfa_fcdiag_loopback_send(fcdiag, &loopback);
    return status;
}

/*
 *  DIAG queue test command
 *
 *   @param[in] *bfa            - bfa data struct
 *   @param[in] force           - 1: don't do ioc op checking
 *   @param[in] queue           - queue no. to test
 *   @param[in] *result         - pt to bfa_diag_qtest_result_t data struct
 *   @param[in] cbfn            - callback function
 *   @param[in] *cbarg          - callback functioin arg
 *
 *   @param[out]
 */
bfa_status_t
bfa_fcdiag_queuetest(struct bfa_s *bfa, u32 force, u32 queue,
        struct bfa_diag_qtest_result_s *result, bfa_cb_diag_t cbfn,
        void *cbarg)
{
    struct bfa_fcdiag_s *fcdiag = BFA_FCDIAG_MOD(bfa);
    bfa_status_t status;
    bfa_trc(fcdiag, force);
    bfa_trc(fcdiag, queue);

    if (!force && !bfa_iocfc_is_operational(bfa))
        return BFA_STATUS_IOC_NON_OP;

    /* check to see if there is another destructive diag cmd running */
    if (fcdiag->qtest.lock) {
        bfa_trc(fcdiag, fcdiag->qtest.lock);
        return BFA_STATUS_DEVBUSY;
    }

    /* Initialization */
    fcdiag->qtest.lock = 1;
    fcdiag->qtest.cbfn = cbfn;
    fcdiag->qtest.cbarg = cbarg;
    fcdiag->qtest.result = result;
    fcdiag->qtest.count = QTEST_CNT_DEFAULT;

    /* Init test results */
    fcdiag->qtest.result->status = BFA_STATUS_OK;
    fcdiag->qtest.result->count  = 0;

    /* send */
    if (queue < BFI_IOC_MAX_CQS) {
        fcdiag->qtest.result->queue  = (u8)queue;
        fcdiag->qtest.queue = (u8)queue;
        fcdiag->qtest.all   = 0;
    } else {
        fcdiag->qtest.result->queue  = 0;
        fcdiag->qtest.queue = 0;
        fcdiag->qtest.all   = 1;
    }
    status = bfa_fcdiag_queuetest_send(fcdiag);

    /* Start a timer */
    if (status == BFA_STATUS_OK) {
        bfa_timer_start(bfa, &fcdiag->qtest.timer,
                bfa_fcdiag_queuetest_timeout, fcdiag,
                BFA_DIAG_QTEST_TOV);
        fcdiag->qtest.timer_active = 1;
    }
    return status;
}

/*
 * DIAG PLB is running
 *
 *   @param[in] *bfa    - bfa data struct
 *
 *   @param[out]
 */
bfa_status_t
bfa_fcdiag_lb_is_running(struct bfa_s *bfa)
{
    struct bfa_fcdiag_s *fcdiag = BFA_FCDIAG_MOD(bfa);
    return fcdiag->lb.lock ?  BFA_STATUS_DIAG_BUSY : BFA_STATUS_OK;
}

/*
 *  D-port
 */
static bfa_boolean_t bfa_dport_send_req(struct bfa_dport_s *dport,
                    enum bfi_dport_req req);
static void
bfa_cb_fcdiag_dport(struct bfa_dport_s *dport, bfa_status_t bfa_status)
{
    if (dport->cbfn != NULL) {
        dport->cbfn(dport->cbarg, bfa_status);
        dport->cbfn = NULL;
        dport->cbarg = NULL;
    }
}

static void
bfa_dport_sm_disabled(struct bfa_dport_s *dport, enum bfa_dport_sm_event event)
{
    bfa_trc(dport->bfa, event);

    switch (event) {
    case BFA_DPORT_SM_ENABLE:
        bfa_fcport_dportenable(dport->bfa);
        if (bfa_dport_send_req(dport, BFI_DPORT_ENABLE))
            bfa_sm_set_state(dport, bfa_dport_sm_enabling);
        else
            bfa_sm_set_state(dport, bfa_dport_sm_enabling_qwait);
        break;

    case BFA_DPORT_SM_DISABLE:
        /* Already disabled */
        break;

    case BFA_DPORT_SM_HWFAIL:
        /* ignore */
        break;

    default:
        bfa_sm_fault(dport->bfa, event);
    }
}

static void
bfa_dport_sm_enabling_qwait(struct bfa_dport_s *dport,
                enum bfa_dport_sm_event event)
{
    bfa_trc(dport->bfa, event);

    switch (event) {
    case BFA_DPORT_SM_QRESUME:
        bfa_sm_set_state(dport, bfa_dport_sm_enabling);
        bfa_dport_send_req(dport, BFI_DPORT_ENABLE);
        break;

    case BFA_DPORT_SM_HWFAIL:
        bfa_reqq_wcancel(&dport->reqq_wait);
        bfa_sm_set_state(dport, bfa_dport_sm_disabled);
        bfa_cb_fcdiag_dport(dport, BFA_STATUS_FAILED);
        break;

    default:
        bfa_sm_fault(dport->bfa, event);
    }
}

static void
bfa_dport_sm_enabling(struct bfa_dport_s *dport, enum bfa_dport_sm_event event)
{
    bfa_trc(dport->bfa, event);

    switch (event) {
    case BFA_DPORT_SM_FWRSP:
        bfa_sm_set_state(dport, bfa_dport_sm_enabled);
        break;

    case BFA_DPORT_SM_HWFAIL:
        bfa_sm_set_state(dport, bfa_dport_sm_disabled);
        bfa_cb_fcdiag_dport(dport, BFA_STATUS_FAILED);
        break;

    default:
        bfa_sm_fault(dport->bfa, event);
    }
}

static void
bfa_dport_sm_enabled(struct bfa_dport_s *dport, enum bfa_dport_sm_event event)
{
    bfa_trc(dport->bfa, event);

    switch (event) {
    case BFA_DPORT_SM_ENABLE:
        /* Already enabled */
        break;

    case BFA_DPORT_SM_DISABLE:
        bfa_fcport_dportdisable(dport->bfa);
        if (bfa_dport_send_req(dport, BFI_DPORT_DISABLE))
            bfa_sm_set_state(dport, bfa_dport_sm_disabling);
        else
            bfa_sm_set_state(dport, bfa_dport_sm_disabling_qwait);
        break;

    case BFA_DPORT_SM_HWFAIL:
        bfa_sm_set_state(dport, bfa_dport_sm_disabled);
        break;

    default:
        bfa_sm_fault(dport->bfa, event);
    }
}

static void
bfa_dport_sm_disabling_qwait(struct bfa_dport_s *dport,
                 enum bfa_dport_sm_event event)
{
    bfa_trc(dport->bfa, event);

    switch (event) {
    case BFA_DPORT_SM_QRESUME:
        bfa_sm_set_state(dport, bfa_dport_sm_disabling);
        bfa_dport_send_req(dport, BFI_DPORT_DISABLE);
        break;

    case BFA_DPORT_SM_HWFAIL:
        bfa_sm_set_state(dport, bfa_dport_sm_disabled);
        bfa_reqq_wcancel(&dport->reqq_wait);
        bfa_cb_fcdiag_dport(dport, BFA_STATUS_OK);
        break;

    default:
        bfa_sm_fault(dport->bfa, event);
    }
}

static void
bfa_dport_sm_disabling(struct bfa_dport_s *dport, enum bfa_dport_sm_event event)
{
    bfa_trc(dport->bfa, event);

    switch (event) {
    case BFA_DPORT_SM_FWRSP:
        bfa_sm_set_state(dport, bfa_dport_sm_disabled);
        break;

    case BFA_DPORT_SM_HWFAIL:
        bfa_sm_set_state(dport, bfa_dport_sm_disabled);
        bfa_cb_fcdiag_dport(dport, BFA_STATUS_OK);
        break;

    default:
        bfa_sm_fault(dport->bfa, event);
    }
}


static bfa_boolean_t
bfa_dport_send_req(struct bfa_dport_s *dport, enum bfi_dport_req req)
{
    struct bfi_diag_dport_req_s *m;

    /*
     * Increment message tag before queue check, so that responses to old
     * requests are discarded.
     */
    dport->msgtag++;

    /*
     * check for room in queue to send request now
     */
    m = bfa_reqq_next(dport->bfa, BFA_REQQ_DIAG);
    if (!m) {
        bfa_reqq_wait(dport->bfa, BFA_REQQ_PORT, &dport->reqq_wait);
        return BFA_FALSE;
    }

    bfi_h2i_set(m->mh, BFI_MC_DIAG, BFI_DIAG_H2I_DPORT,
            bfa_fn_lpu(dport->bfa));
    m->req  = req;
    m->msgtag = dport->msgtag;

    /*
     * queue I/O message to firmware
     */
    bfa_reqq_produce(dport->bfa, BFA_REQQ_DIAG, m->mh);

    return BFA_TRUE;
}

static void
bfa_dport_qresume(void *cbarg)
{
    struct bfa_dport_s *dport = cbarg;

    bfa_sm_send_event(dport, BFA_DPORT_SM_QRESUME);
}

static void
bfa_dport_req_comp(struct bfa_dport_s *dport, bfi_diag_dport_rsp_t *msg)
{
    bfa_sm_send_event(dport, BFA_DPORT_SM_FWRSP);
    bfa_cb_fcdiag_dport(dport, msg->status);
}

/*
 * Dport enable
 *
 * @param[in] *bfa            - bfa data struct
 */
bfa_status_t
bfa_dport_enable(struct bfa_s *bfa, bfa_cb_diag_t cbfn, void *cbarg)
{
    struct bfa_fcdiag_s *fcdiag = BFA_FCDIAG_MOD(bfa);
    struct bfa_dport_s  *dport = &fcdiag->dport;

    /*
     * Dport is not support in MEZZ card
     */
    if (bfa_mfg_is_mezz(dport->bfa->ioc.attr->card_type)) {
        bfa_trc(dport->bfa, BFA_STATUS_PBC);
        return BFA_STATUS_CMD_NOTSUPP_MEZZ;
    }

    /*
     * Check to see if IOC is down
    */
    if (!bfa_iocfc_is_operational(bfa))
        return BFA_STATUS_IOC_NON_OP;

    /* if port is PBC disabled, return error */
    if (bfa_fcport_is_pbcdisabled(bfa)) {
        bfa_trc(dport->bfa, BFA_STATUS_PBC);
        return BFA_STATUS_PBC;
    }

    /*
     * Check if port mode is FC port
     */
    if (bfa_ioc_get_type(&bfa->ioc) != BFA_IOC_TYPE_FC) {
        bfa_trc(dport->bfa, bfa_ioc_get_type(&bfa->ioc));
        return BFA_STATUS_CMD_NOTSUPP_CNA;
    }

    /*
     * Check if port is in LOOP mode
     */
    if ((bfa_fcport_get_cfg_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP) ||
        (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP)) {
        bfa_trc(dport->bfa, 0);
        return BFA_STATUS_TOPOLOGY_LOOP;
    }

    /*
     * Check if port is TRUNK mode
     */
    if (bfa_fcport_is_trunk_enabled(bfa)) {
        bfa_trc(dport->bfa, 0);
        return BFA_STATUS_ERROR_TRUNK_ENABLED;
    }

    /*
     * Check to see if port is disable or in dport state
     */
    if ((bfa_fcport_is_disabled(bfa) == BFA_FALSE) &&
        (bfa_fcport_is_dport(bfa) == BFA_FALSE)) {
        bfa_trc(dport->bfa, 0);
        return BFA_STATUS_PORT_NOT_DISABLED;
    }

    /*
     * Check if dport is busy
     */
    if (bfa_sm_cmp_state(dport, bfa_dport_sm_enabling) ||
        bfa_sm_cmp_state(dport, bfa_dport_sm_enabling_qwait) ||
        bfa_sm_cmp_state(dport, bfa_dport_sm_disabling) ||
        bfa_sm_cmp_state(dport, bfa_dport_sm_disabling_qwait)) {
        return BFA_STATUS_DEVBUSY;
    }

    /*
     * Check if dport is already enabled
     */
    if (bfa_sm_cmp_state(dport, bfa_dport_sm_enabled)) {
        bfa_trc(dport->bfa, 0);
        return BFA_STATUS_DPORT_ENABLED;
    }

    dport->cbfn = cbfn;
    dport->cbarg = cbarg;

    bfa_sm_send_event(dport, BFA_DPORT_SM_ENABLE);
    return BFA_STATUS_OK;
}

/*
 *  Dport disable
 *
 *  @param[in] *bfa            - bfa data struct
 */
bfa_status_t
bfa_dport_disable(struct bfa_s *bfa, bfa_cb_diag_t cbfn, void *cbarg)
{
    struct bfa_fcdiag_s *fcdiag = BFA_FCDIAG_MOD(bfa);
    struct bfa_dport_s *dport = &fcdiag->dport;

    if (bfa_ioc_is_disabled(&bfa->ioc))
        return BFA_STATUS_IOC_DISABLED;

    /* if port is PBC disabled, return error */
    if (bfa_fcport_is_pbcdisabled(bfa)) {
        bfa_trc(dport->bfa, BFA_STATUS_PBC);
        return BFA_STATUS_PBC;
    }

    /*
     * Check to see if port is disable or in dport state
     */
    if ((bfa_fcport_is_disabled(bfa) == BFA_FALSE) &&
        (bfa_fcport_is_dport(bfa) == BFA_FALSE)) {
        bfa_trc(dport->bfa, 0);
        return BFA_STATUS_PORT_NOT_DISABLED;
    }

    /*
     * Check if dport is busy
     */
    if (bfa_sm_cmp_state(dport, bfa_dport_sm_enabling) ||
        bfa_sm_cmp_state(dport, bfa_dport_sm_enabling_qwait) ||
        bfa_sm_cmp_state(dport, bfa_dport_sm_disabling) ||
        bfa_sm_cmp_state(dport, bfa_dport_sm_disabling_qwait))
        return BFA_STATUS_DEVBUSY;

    /*
     * Check if dport is already disabled
     */
    if (bfa_sm_cmp_state(dport, bfa_dport_sm_disabled)) {
        bfa_trc(dport->bfa, 0);
        return BFA_STATUS_DPORT_DISABLED;
    }

    dport->cbfn = cbfn;
    dport->cbarg = cbarg;

    bfa_sm_send_event(dport, BFA_DPORT_SM_DISABLE);
    return BFA_STATUS_OK;
}

/*
 *  Get D-port state
 *
 * @param[in] *bfa            - bfa data struct
 */

bfa_status_t
bfa_dport_get_state(struct bfa_s *bfa, enum bfa_dport_state *state)
{
    struct bfa_fcdiag_s *fcdiag = BFA_FCDIAG_MOD(bfa);
    struct bfa_dport_s *dport = &fcdiag->dport;

    if (bfa_sm_cmp_state(dport, bfa_dport_sm_enabled))
        *state = BFA_DPORT_ST_ENABLED;
    else if (bfa_sm_cmp_state(dport, bfa_dport_sm_enabling) ||
         bfa_sm_cmp_state(dport, bfa_dport_sm_enabling_qwait))
        *state = BFA_DPORT_ST_ENABLING;
    else if (bfa_sm_cmp_state(dport, bfa_dport_sm_disabled))
        *state = BFA_DPORT_ST_DISABLED;
    else if (bfa_sm_cmp_state(dport, bfa_dport_sm_disabling) ||
         bfa_sm_cmp_state(dport, bfa_dport_sm_disabling_qwait))
        *state = BFA_DPORT_ST_DISABLING;
    else {
        bfa_trc(dport->bfa, BFA_STATUS_EINVAL);
        return BFA_STATUS_EINVAL;
    }
    return BFA_STATUS_OK;
}