/*
 * 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_ioc.h"
#include "bfi_reg.h"
#include "bfa_defs.h"
#include "bfa_defs_svc.h"

BFA_TRC_FILE(CNA, IOC);

/*
 * IOC local definitions
 */
#define BFA_IOC_TOV             3000    /* msecs */
#define BFA_IOC_HWSEM_TOV       500     /* msecs */
#define BFA_IOC_HB_TOV          500     /* msecs */
#define BFA_IOC_TOV_RECOVER      BFA_IOC_HB_TOV
#define BFA_IOC_POLL_TOV        BFA_TIMER_FREQ

#define bfa_ioc_timer_start(__ioc)                                      \
        bfa_timer_begin((__ioc)->timer_mod, &(__ioc)->ioc_timer,        \
                        bfa_ioc_timeout, (__ioc), BFA_IOC_TOV)
#define bfa_ioc_timer_stop(__ioc)   bfa_timer_stop(&(__ioc)->ioc_timer)

#define bfa_hb_timer_start(__ioc)                                       \
        bfa_timer_begin((__ioc)->timer_mod, &(__ioc)->hb_timer,         \
                        bfa_ioc_hb_check, (__ioc), BFA_IOC_HB_TOV)
#define bfa_hb_timer_stop(__ioc)        bfa_timer_stop(&(__ioc)->hb_timer)

#define BFA_DBG_FWTRC_OFF(_fn)  (BFI_IOC_TRC_OFF + BFA_DBG_FWTRC_LEN * (_fn))

/*
 * Asic specific macros : see bfa_hw_cb.c and bfa_hw_ct.c for details.
 */

#define bfa_ioc_firmware_lock(__ioc)                    \
                        ((__ioc)->ioc_hwif->ioc_firmware_lock(__ioc))
#define bfa_ioc_firmware_unlock(__ioc)                  \
                        ((__ioc)->ioc_hwif->ioc_firmware_unlock(__ioc))
#define bfa_ioc_reg_init(__ioc) ((__ioc)->ioc_hwif->ioc_reg_init(__ioc))
#define bfa_ioc_map_port(__ioc) ((__ioc)->ioc_hwif->ioc_map_port(__ioc))
#define bfa_ioc_notify_fail(__ioc)              \
                        ((__ioc)->ioc_hwif->ioc_notify_fail(__ioc))
#define bfa_ioc_sync_start(__ioc)               \
                        ((__ioc)->ioc_hwif->ioc_sync_start(__ioc))
#define bfa_ioc_sync_join(__ioc)                \
                        ((__ioc)->ioc_hwif->ioc_sync_join(__ioc))
#define bfa_ioc_sync_leave(__ioc)               \
                        ((__ioc)->ioc_hwif->ioc_sync_leave(__ioc))
#define bfa_ioc_sync_ack(__ioc)                 \
                        ((__ioc)->ioc_hwif->ioc_sync_ack(__ioc))
#define bfa_ioc_sync_complete(__ioc)            \
                        ((__ioc)->ioc_hwif->ioc_sync_complete(__ioc))

#define bfa_ioc_mbox_cmd_pending(__ioc)         \
                        (!list_empty(&((__ioc)->mbox_mod.cmd_q)) || \
                        readl((__ioc)->ioc_regs.hfn_mbox_cmd))

bfa_boolean_t bfa_auto_recover = BFA_TRUE;

/*
 * forward declarations
 */
static void bfa_ioc_hw_sem_get(struct bfa_ioc_s *ioc);
static void bfa_ioc_hwinit(struct bfa_ioc_s *ioc, bfa_boolean_t force);
static void bfa_ioc_timeout(void *ioc);
static void bfa_ioc_poll_fwinit(struct bfa_ioc_s *ioc);
static void bfa_ioc_send_enable(struct bfa_ioc_s *ioc);
static void bfa_ioc_send_disable(struct bfa_ioc_s *ioc);
static void bfa_ioc_send_getattr(struct bfa_ioc_s *ioc);
static void bfa_ioc_hb_monitor(struct bfa_ioc_s *ioc);
static void bfa_ioc_mbox_poll(struct bfa_ioc_s *ioc);
static void bfa_ioc_mbox_flush(struct bfa_ioc_s *ioc);
static void bfa_ioc_recover(struct bfa_ioc_s *ioc);
static void bfa_ioc_event_notify(struct bfa_ioc_s *ioc ,
                                enum bfa_ioc_event_e event);
static void bfa_ioc_disable_comp(struct bfa_ioc_s *ioc);
static void bfa_ioc_lpu_stop(struct bfa_ioc_s *ioc);
static void bfa_ioc_fail_notify(struct bfa_ioc_s *ioc);
static void bfa_ioc_pf_fwmismatch(struct bfa_ioc_s *ioc);

/*
 * IOC state machine definitions/declarations
 */
enum ioc_event {
        IOC_E_RESET             = 1,    /*  IOC reset request           */
        IOC_E_ENABLE            = 2,    /*  IOC enable request          */
        IOC_E_DISABLE           = 3,    /*  IOC disable request */
        IOC_E_DETACH            = 4,    /*  driver detach cleanup       */
        IOC_E_ENABLED           = 5,    /*  f/w enabled         */
        IOC_E_FWRSP_GETATTR     = 6,    /*  IOC get attribute response  */
        IOC_E_DISABLED          = 7,    /*  f/w disabled                */
        IOC_E_PFFAILED          = 8,    /*  failure notice by iocpf sm  */
        IOC_E_HBFAIL            = 9,    /*  heartbeat failure           */
        IOC_E_HWERROR           = 10,   /*  hardware error interrupt    */
        IOC_E_TIMEOUT           = 11,   /*  timeout                     */
        IOC_E_HWFAILED          = 12,   /*  PCI mapping failure notice  */
};

bfa_fsm_state_decl(bfa_ioc, uninit, struct bfa_ioc_s, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, reset, struct bfa_ioc_s, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, enabling, struct bfa_ioc_s, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, getattr, struct bfa_ioc_s, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, op, struct bfa_ioc_s, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, fail_retry, struct bfa_ioc_s, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, fail, struct bfa_ioc_s, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, disabling, struct bfa_ioc_s, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, disabled, struct bfa_ioc_s, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, hwfail, struct bfa_ioc_s, enum ioc_event);

static struct bfa_sm_table_s ioc_sm_table[] = {
        {BFA_SM(bfa_ioc_sm_uninit), BFA_IOC_UNINIT},
        {BFA_SM(bfa_ioc_sm_reset), BFA_IOC_RESET},
        {BFA_SM(bfa_ioc_sm_enabling), BFA_IOC_ENABLING},
        {BFA_SM(bfa_ioc_sm_getattr), BFA_IOC_GETATTR},
        {BFA_SM(bfa_ioc_sm_op), BFA_IOC_OPERATIONAL},
        {BFA_SM(bfa_ioc_sm_fail_retry), BFA_IOC_INITFAIL},
        {BFA_SM(bfa_ioc_sm_fail), BFA_IOC_FAIL},
        {BFA_SM(bfa_ioc_sm_disabling), BFA_IOC_DISABLING},
        {BFA_SM(bfa_ioc_sm_disabled), BFA_IOC_DISABLED},
        {BFA_SM(bfa_ioc_sm_hwfail), BFA_IOC_HWFAIL},
};

/*
 * IOCPF state machine definitions/declarations
 */

#define bfa_iocpf_timer_start(__ioc)                                    \
        bfa_timer_begin((__ioc)->timer_mod, &(__ioc)->ioc_timer,        \
                        bfa_iocpf_timeout, (__ioc), BFA_IOC_TOV)
#define bfa_iocpf_timer_stop(__ioc)     bfa_timer_stop(&(__ioc)->ioc_timer)

#define bfa_iocpf_poll_timer_start(__ioc)                               \
        bfa_timer_begin((__ioc)->timer_mod, &(__ioc)->ioc_timer,        \
                        bfa_iocpf_poll_timeout, (__ioc), BFA_IOC_POLL_TOV)

#define bfa_sem_timer_start(__ioc)                                      \
        bfa_timer_begin((__ioc)->timer_mod, &(__ioc)->sem_timer,        \
                        bfa_iocpf_sem_timeout, (__ioc), BFA_IOC_HWSEM_TOV)
#define bfa_sem_timer_stop(__ioc)       bfa_timer_stop(&(__ioc)->sem_timer)

/*
 * Forward declareations for iocpf state machine
 */
static void bfa_iocpf_timeout(void *ioc_arg);
static void bfa_iocpf_sem_timeout(void *ioc_arg);
static void bfa_iocpf_poll_timeout(void *ioc_arg);

/*
 * IOCPF state machine events
 */
enum iocpf_event {
        IOCPF_E_ENABLE          = 1,    /*  IOCPF enable request        */
        IOCPF_E_DISABLE         = 2,    /*  IOCPF disable request       */
        IOCPF_E_STOP            = 3,    /*  stop on driver detach       */
        IOCPF_E_FWREADY         = 4,    /*  f/w initialization done     */
        IOCPF_E_FWRSP_ENABLE    = 5,    /*  enable f/w response */
        IOCPF_E_FWRSP_DISABLE   = 6,    /*  disable f/w response        */
        IOCPF_E_FAIL            = 7,    /*  failure notice by ioc sm    */
        IOCPF_E_INITFAIL        = 8,    /*  init fail notice by ioc sm  */
        IOCPF_E_GETATTRFAIL     = 9,    /*  init fail notice by ioc sm  */
        IOCPF_E_SEMLOCKED       = 10,   /*  h/w semaphore is locked     */
        IOCPF_E_TIMEOUT         = 11,   /*  f/w response timeout        */
        IOCPF_E_SEM_ERROR       = 12,   /*  h/w sem mapping error       */
};

/*
 * IOCPF states
 */
enum bfa_iocpf_state {
        BFA_IOCPF_RESET         = 1,    /*  IOC is in reset state */
        BFA_IOCPF_SEMWAIT       = 2,    /*  Waiting for IOC h/w semaphore */
        BFA_IOCPF_HWINIT        = 3,    /*  IOC h/w is being initialized */
        BFA_IOCPF_READY         = 4,    /*  IOCPF is initialized */
        BFA_IOCPF_INITFAIL      = 5,    /*  IOCPF failed */
        BFA_IOCPF_FAIL          = 6,    /*  IOCPF failed */
        BFA_IOCPF_DISABLING     = 7,    /*  IOCPF is being disabled */
        BFA_IOCPF_DISABLED      = 8,    /*  IOCPF is disabled */
        BFA_IOCPF_FWMISMATCH    = 9,    /*  IOC f/w different from drivers */
};

bfa_fsm_state_decl(bfa_iocpf, reset, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, fwcheck, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, mismatch, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, semwait, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, hwinit, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, enabling, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, ready, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, initfail_sync, struct bfa_iocpf_s,
                                                enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, initfail, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, fail_sync, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, fail, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, disabling, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, disabling_sync, struct bfa_iocpf_s,
                                                enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, disabled, struct bfa_iocpf_s, enum iocpf_event);

static struct bfa_sm_table_s iocpf_sm_table[] = {
        {BFA_SM(bfa_iocpf_sm_reset), BFA_IOCPF_RESET},
        {BFA_SM(bfa_iocpf_sm_fwcheck), BFA_IOCPF_FWMISMATCH},
        {BFA_SM(bfa_iocpf_sm_mismatch), BFA_IOCPF_FWMISMATCH},
        {BFA_SM(bfa_iocpf_sm_semwait), BFA_IOCPF_SEMWAIT},
        {BFA_SM(bfa_iocpf_sm_hwinit), BFA_IOCPF_HWINIT},
        {BFA_SM(bfa_iocpf_sm_enabling), BFA_IOCPF_HWINIT},
        {BFA_SM(bfa_iocpf_sm_ready), BFA_IOCPF_READY},
        {BFA_SM(bfa_iocpf_sm_initfail_sync), BFA_IOCPF_INITFAIL},
        {BFA_SM(bfa_iocpf_sm_initfail), BFA_IOCPF_INITFAIL},
        {BFA_SM(bfa_iocpf_sm_fail_sync), BFA_IOCPF_FAIL},
        {BFA_SM(bfa_iocpf_sm_fail), BFA_IOCPF_FAIL},
        {BFA_SM(bfa_iocpf_sm_disabling), BFA_IOCPF_DISABLING},
        {BFA_SM(bfa_iocpf_sm_disabling_sync), BFA_IOCPF_DISABLING},
        {BFA_SM(bfa_iocpf_sm_disabled), BFA_IOCPF_DISABLED},
};

/*
 * IOC State Machine
 */

/*
 * Beginning state. IOC uninit state.
 */

static void
bfa_ioc_sm_uninit_entry(struct bfa_ioc_s *ioc)
{
}

/*
 * IOC is in uninit state.
 */
static void
bfa_ioc_sm_uninit(struct bfa_ioc_s *ioc, enum ioc_event event)
{
        bfa_trc(ioc, event);

        switch (event) {
        case IOC_E_RESET:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_reset);
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}
/*
 * Reset entry actions -- initialize state machine
 */
static void
bfa_ioc_sm_reset_entry(struct bfa_ioc_s *ioc)
{
        bfa_fsm_set_state(&ioc->iocpf, bfa_iocpf_sm_reset);
}

/*
 * IOC is in reset state.
 */
static void
bfa_ioc_sm_reset(struct bfa_ioc_s *ioc, enum ioc_event event)
{
        bfa_trc(ioc, event);

        switch (event) {
        case IOC_E_ENABLE:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_enabling);
                break;

        case IOC_E_DISABLE:
                bfa_ioc_disable_comp(ioc);
                break;

        case IOC_E_DETACH:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}


static void
bfa_ioc_sm_enabling_entry(struct bfa_ioc_s *ioc)
{
        bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_ENABLE);
}

/*
 * Host IOC function is being enabled, awaiting response from firmware.
 * Semaphore is acquired.
 */
static void
bfa_ioc_sm_enabling(struct bfa_ioc_s *ioc, enum ioc_event event)
{
        bfa_trc(ioc, event);

        switch (event) {
        case IOC_E_ENABLED:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_getattr);
                break;

        case IOC_E_PFFAILED:
                /* !!! fall through !!! */
        case IOC_E_HWERROR:
                ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
                bfa_fsm_set_state(ioc, bfa_ioc_sm_fail);
                if (event != IOC_E_PFFAILED)
                        bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_INITFAIL);
                break;

        case IOC_E_HWFAILED:
                ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
                bfa_fsm_set_state(ioc, bfa_ioc_sm_hwfail);
                break;

        case IOC_E_DISABLE:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
                break;

        case IOC_E_DETACH:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
                bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_STOP);
                break;

        case IOC_E_ENABLE:
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}


static void
bfa_ioc_sm_getattr_entry(struct bfa_ioc_s *ioc)
{
        bfa_ioc_timer_start(ioc);
        bfa_ioc_send_getattr(ioc);
}

/*
 * IOC configuration in progress. Timer is active.
 */
static void
bfa_ioc_sm_getattr(struct bfa_ioc_s *ioc, enum ioc_event event)
{
        bfa_trc(ioc, event);

        switch (event) {
        case IOC_E_FWRSP_GETATTR:
                bfa_ioc_timer_stop(ioc);
                bfa_fsm_set_state(ioc, bfa_ioc_sm_op);
                break;

        case IOC_E_PFFAILED:
        case IOC_E_HWERROR:
                bfa_ioc_timer_stop(ioc);
                /* !!! fall through !!! */
        case IOC_E_TIMEOUT:
                ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
                bfa_fsm_set_state(ioc, bfa_ioc_sm_fail);
                if (event != IOC_E_PFFAILED)
                        bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_GETATTRFAIL);
                break;

        case IOC_E_DISABLE:
                bfa_ioc_timer_stop(ioc);
                bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
                break;

        case IOC_E_ENABLE:
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

static void
bfa_ioc_sm_op_entry(struct bfa_ioc_s *ioc)
{
        struct bfad_s *bfad = (struct bfad_s *)ioc->bfa->bfad;

        ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_OK);
        bfa_ioc_event_notify(ioc, BFA_IOC_E_ENABLED);
        bfa_ioc_hb_monitor(ioc);
        BFA_LOG(KERN_INFO, bfad, bfa_log_level, "IOC enabled\n");
        bfa_ioc_aen_post(ioc, BFA_IOC_AEN_ENABLE);
}

static void
bfa_ioc_sm_op(struct bfa_ioc_s *ioc, enum ioc_event event)
{
        bfa_trc(ioc, event);

        switch (event) {
        case IOC_E_ENABLE:
                break;

        case IOC_E_DISABLE:
                bfa_hb_timer_stop(ioc);
                bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
                break;

        case IOC_E_PFFAILED:
        case IOC_E_HWERROR:
                bfa_hb_timer_stop(ioc);
                /* !!! fall through !!! */
        case IOC_E_HBFAIL:
                if (ioc->iocpf.auto_recover)
                        bfa_fsm_set_state(ioc, bfa_ioc_sm_fail_retry);
                else
                        bfa_fsm_set_state(ioc, bfa_ioc_sm_fail);

                bfa_ioc_fail_notify(ioc);

                if (event != IOC_E_PFFAILED)
                        bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_FAIL);
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}


static void
bfa_ioc_sm_disabling_entry(struct bfa_ioc_s *ioc)
{
        struct bfad_s *bfad = (struct bfad_s *)ioc->bfa->bfad;
        bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_DISABLE);
        BFA_LOG(KERN_INFO, bfad, bfa_log_level, "IOC disabled\n");
        bfa_ioc_aen_post(ioc, BFA_IOC_AEN_DISABLE);
}

/*
 * IOC is being disabled
 */
static void
bfa_ioc_sm_disabling(struct bfa_ioc_s *ioc, enum ioc_event event)
{
        bfa_trc(ioc, event);

        switch (event) {
        case IOC_E_DISABLED:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_disabled);
                break;

        case IOC_E_HWERROR:
                /*
                 * No state change.  Will move to disabled state
                 * after iocpf sm completes failure processing and
                 * moves to disabled state.
                 */
                bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_FAIL);
                break;

        case IOC_E_HWFAILED:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_hwfail);
                bfa_ioc_disable_comp(ioc);
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

/*
 * IOC disable completion entry.
 */
static void
bfa_ioc_sm_disabled_entry(struct bfa_ioc_s *ioc)
{
        bfa_ioc_disable_comp(ioc);
}

static void
bfa_ioc_sm_disabled(struct bfa_ioc_s *ioc, enum ioc_event event)
{
        bfa_trc(ioc, event);

        switch (event) {
        case IOC_E_ENABLE:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_enabling);
                break;

        case IOC_E_DISABLE:
                ioc->cbfn->disable_cbfn(ioc->bfa);
                break;

        case IOC_E_DETACH:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
                bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_STOP);
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}


static void
bfa_ioc_sm_fail_retry_entry(struct bfa_ioc_s *ioc)
{
        bfa_trc(ioc, 0);
}

/*
 * Hardware initialization retry.
 */
static void
bfa_ioc_sm_fail_retry(struct bfa_ioc_s *ioc, enum ioc_event event)
{
        bfa_trc(ioc, event);

        switch (event) {
        case IOC_E_ENABLED:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_getattr);
                break;

        case IOC_E_PFFAILED:
        case IOC_E_HWERROR:
                /*
                 * Initialization retry failed.
                 */
                ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
                bfa_fsm_set_state(ioc, bfa_ioc_sm_fail);
                if (event != IOC_E_PFFAILED)
                        bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_INITFAIL);
                break;

        case IOC_E_HWFAILED:
                ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
                bfa_fsm_set_state(ioc, bfa_ioc_sm_hwfail);
                break;

        case IOC_E_ENABLE:
                break;

        case IOC_E_DISABLE:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
                break;

        case IOC_E_DETACH:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
                bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_STOP);
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}


static void
bfa_ioc_sm_fail_entry(struct bfa_ioc_s *ioc)
{
        bfa_trc(ioc, 0);
}

/*
 * IOC failure.
 */
static void
bfa_ioc_sm_fail(struct bfa_ioc_s *ioc, enum ioc_event event)
{
        bfa_trc(ioc, event);

        switch (event) {

        case IOC_E_ENABLE:
                ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
                break;

        case IOC_E_DISABLE:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
                break;

        case IOC_E_DETACH:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
                bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_STOP);
                break;

        case IOC_E_HWERROR:
        case IOC_E_HWFAILED:
                /*
                 * HB failure / HW error notification, ignore.
                 */
                break;
        default:
                bfa_sm_fault(ioc, event);
        }
}

static void
bfa_ioc_sm_hwfail_entry(struct bfa_ioc_s *ioc)
{
        bfa_trc(ioc, 0);
}

static void
bfa_ioc_sm_hwfail(struct bfa_ioc_s *ioc, enum ioc_event event)
{
        bfa_trc(ioc, event);

        switch (event) {
        case IOC_E_ENABLE:
                ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
                break;

        case IOC_E_DISABLE:
                ioc->cbfn->disable_cbfn(ioc->bfa);
                break;

        case IOC_E_DETACH:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
                break;

        case IOC_E_HWERROR:
                /* Ignore - already in hwfail state */
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

/*
 * IOCPF State Machine
 */

/*
 * Reset entry actions -- initialize state machine
 */
static void
bfa_iocpf_sm_reset_entry(struct bfa_iocpf_s *iocpf)
{
        iocpf->fw_mismatch_notified = BFA_FALSE;
        iocpf->auto_recover = bfa_auto_recover;
}

/*
 * Beginning state. IOC is in reset state.
 */
static void
bfa_iocpf_sm_reset(struct bfa_iocpf_s *iocpf, enum iocpf_event event)
{
        struct bfa_ioc_s *ioc = iocpf->ioc;

        bfa_trc(ioc, event);

        switch (event) {
        case IOCPF_E_ENABLE:
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fwcheck);
                break;

        case IOCPF_E_STOP:
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

/*
 * Semaphore should be acquired for version check.
 */
static void
bfa_iocpf_sm_fwcheck_entry(struct bfa_iocpf_s *iocpf)
{
        struct bfi_ioc_image_hdr_s      fwhdr;
        u32     r32, fwstate, pgnum, pgoff, loff = 0;
        int     i;

        /*
         * Spin on init semaphore to serialize.
         */
        r32 = readl(iocpf->ioc->ioc_regs.ioc_init_sem_reg);
        while (r32 & 0x1) {
                udelay(20);
                r32 = readl(iocpf->ioc->ioc_regs.ioc_init_sem_reg);
        }

        /* h/w sem init */
        fwstate = readl(iocpf->ioc->ioc_regs.ioc_fwstate);
        if (fwstate == BFI_IOC_UNINIT) {
                writel(1, iocpf->ioc->ioc_regs.ioc_init_sem_reg);
                goto sem_get;
        }

        bfa_ioc_fwver_get(iocpf->ioc, &fwhdr);

        if (swab32(fwhdr.exec) == BFI_FWBOOT_TYPE_NORMAL) {
                writel(1, iocpf->ioc->ioc_regs.ioc_init_sem_reg);
                goto sem_get;
        }

        /*
         * Clear fwver hdr
         */
        pgnum = PSS_SMEM_PGNUM(iocpf->ioc->ioc_regs.smem_pg0, loff);
        pgoff = PSS_SMEM_PGOFF(loff);
        writel(pgnum, iocpf->ioc->ioc_regs.host_page_num_fn);

        for (i = 0; i < sizeof(struct bfi_ioc_image_hdr_s) / sizeof(u32); i++) {
                bfa_mem_write(iocpf->ioc->ioc_regs.smem_page_start, loff, 0);
                loff += sizeof(u32);
        }

        bfa_trc(iocpf->ioc, fwstate);
        bfa_trc(iocpf->ioc, swab32(fwhdr.exec));
        writel(BFI_IOC_UNINIT, iocpf->ioc->ioc_regs.ioc_fwstate);
        writel(BFI_IOC_UNINIT, iocpf->ioc->ioc_regs.alt_ioc_fwstate);

        /*
         * Unlock the hw semaphore. Should be here only once per boot.
         */
        bfa_ioc_ownership_reset(iocpf->ioc);

        /*
         * unlock init semaphore.
         */
        writel(1, iocpf->ioc->ioc_regs.ioc_init_sem_reg);

sem_get:
        bfa_ioc_hw_sem_get(iocpf->ioc);
}

/*
 * Awaiting h/w semaphore to continue with version check.
 */
static void
bfa_iocpf_sm_fwcheck(struct bfa_iocpf_s *iocpf, enum iocpf_event event)
{
        struct bfa_ioc_s *ioc = iocpf->ioc;

        bfa_trc(ioc, event);

        switch (event) {
        case IOCPF_E_SEMLOCKED:
                if (bfa_ioc_firmware_lock(ioc)) {
                        if (bfa_ioc_sync_start(ioc)) {
                                bfa_ioc_sync_join(ioc);
                                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_hwinit);
                        } else {
                                bfa_ioc_firmware_unlock(ioc);
                                writel(1, ioc->ioc_regs.ioc_sem_reg);
                                bfa_sem_timer_start(ioc);
                        }
                } else {
                        writel(1, ioc->ioc_regs.ioc_sem_reg);
                        bfa_fsm_set_state(iocpf, bfa_iocpf_sm_mismatch);
                }
                break;

        case IOCPF_E_SEM_ERROR:
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail);
                bfa_fsm_send_event(ioc, IOC_E_HWFAILED);
                break;

        case IOCPF_E_DISABLE:
                bfa_sem_timer_stop(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
                bfa_fsm_send_event(ioc, IOC_E_DISABLED);
                break;

        case IOCPF_E_STOP:
                bfa_sem_timer_stop(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

/*
 * Notify enable completion callback.
 */
static void
bfa_iocpf_sm_mismatch_entry(struct bfa_iocpf_s *iocpf)
{
        /*
         * Call only the first time sm enters fwmismatch state.
         */
        if (iocpf->fw_mismatch_notified == BFA_FALSE)
                bfa_ioc_pf_fwmismatch(iocpf->ioc);

        iocpf->fw_mismatch_notified = BFA_TRUE;
        bfa_iocpf_timer_start(iocpf->ioc);
}

/*
 * Awaiting firmware version match.
 */
static void
bfa_iocpf_sm_mismatch(struct bfa_iocpf_s *iocpf, enum iocpf_event event)
{
        struct bfa_ioc_s *ioc = iocpf->ioc;

        bfa_trc(ioc, event);

        switch (event) {
        case IOCPF_E_TIMEOUT:
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fwcheck);
                break;

        case IOCPF_E_DISABLE:
                bfa_iocpf_timer_stop(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
                bfa_fsm_send_event(ioc, IOC_E_DISABLED);
                break;

        case IOCPF_E_STOP:
                bfa_iocpf_timer_stop(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

/*
 * Request for semaphore.
 */
static void
bfa_iocpf_sm_semwait_entry(struct bfa_iocpf_s *iocpf)
{
        bfa_ioc_hw_sem_get(iocpf->ioc);
}

/*
 * Awaiting semaphore for h/w initialzation.
 */
static void
bfa_iocpf_sm_semwait(struct bfa_iocpf_s *iocpf, enum iocpf_event event)
{
        struct bfa_ioc_s *ioc = iocpf->ioc;

        bfa_trc(ioc, event);

        switch (event) {
        case IOCPF_E_SEMLOCKED:
                if (bfa_ioc_sync_complete(ioc)) {
                        bfa_ioc_sync_join(ioc);
                        bfa_fsm_set_state(iocpf, bfa_iocpf_sm_hwinit);
                } else {
                        writel(1, ioc->ioc_regs.ioc_sem_reg);
                        bfa_sem_timer_start(ioc);
                }
                break;

        case IOCPF_E_SEM_ERROR:
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail);
                bfa_fsm_send_event(ioc, IOC_E_HWFAILED);
                break;

        case IOCPF_E_DISABLE:
                bfa_sem_timer_stop(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

static void
bfa_iocpf_sm_hwinit_entry(struct bfa_iocpf_s *iocpf)
{
        iocpf->poll_time = 0;
        bfa_ioc_hwinit(iocpf->ioc, BFA_FALSE);
}

/*
 * Hardware is being initialized. Interrupts are enabled.
 * Holding hardware semaphore lock.
 */
static void
bfa_iocpf_sm_hwinit(struct bfa_iocpf_s *iocpf, enum iocpf_event event)
{
        struct bfa_ioc_s *ioc = iocpf->ioc;

        bfa_trc(ioc, event);

        switch (event) {
        case IOCPF_E_FWREADY:
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_enabling);
                break;

        case IOCPF_E_TIMEOUT:
                writel(1, ioc->ioc_regs.ioc_sem_reg);
                bfa_fsm_send_event(ioc, IOC_E_PFFAILED);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail_sync);
                break;

        case IOCPF_E_DISABLE:
                bfa_iocpf_timer_stop(ioc);
                bfa_ioc_sync_leave(ioc);
                writel(1, ioc->ioc_regs.ioc_sem_reg);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabled);
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

static void
bfa_iocpf_sm_enabling_entry(struct bfa_iocpf_s *iocpf)
{
        bfa_iocpf_timer_start(iocpf->ioc);
        /*
         * Enable Interrupts before sending fw IOC ENABLE cmd.
         */
        iocpf->ioc->cbfn->reset_cbfn(iocpf->ioc->bfa);
        bfa_ioc_send_enable(iocpf->ioc);
}

/*
 * Host IOC function is being enabled, awaiting response from firmware.
 * Semaphore is acquired.
 */
static void
bfa_iocpf_sm_enabling(struct bfa_iocpf_s *iocpf, enum iocpf_event event)
{
        struct bfa_ioc_s *ioc = iocpf->ioc;

        bfa_trc(ioc, event);

        switch (event) {
        case IOCPF_E_FWRSP_ENABLE:
                bfa_iocpf_timer_stop(ioc);
                writel(1, ioc->ioc_regs.ioc_sem_reg);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_ready);
                break;

        case IOCPF_E_INITFAIL:
                bfa_iocpf_timer_stop(ioc);
                /*
                 * !!! fall through !!!
                 */

        case IOCPF_E_TIMEOUT:
                writel(1, ioc->ioc_regs.ioc_sem_reg);
                if (event == IOCPF_E_TIMEOUT)
                        bfa_fsm_send_event(ioc, IOC_E_PFFAILED);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail_sync);
                break;

        case IOCPF_E_DISABLE:
                bfa_iocpf_timer_stop(ioc);
                writel(1, ioc->ioc_regs.ioc_sem_reg);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling);
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

static void
bfa_iocpf_sm_ready_entry(struct bfa_iocpf_s *iocpf)
{
        bfa_fsm_send_event(iocpf->ioc, IOC_E_ENABLED);
}

static void
bfa_iocpf_sm_ready(struct bfa_iocpf_s *iocpf, enum iocpf_event event)
{
        struct bfa_ioc_s *ioc = iocpf->ioc;

        bfa_trc(ioc, event);

        switch (event) {
        case IOCPF_E_DISABLE:
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling);
                break;

        case IOCPF_E_GETATTRFAIL:
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail_sync);
                break;

        case IOCPF_E_FAIL:
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail_sync);
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

static void
bfa_iocpf_sm_disabling_entry(struct bfa_iocpf_s *iocpf)
{
        bfa_iocpf_timer_start(iocpf->ioc);
        bfa_ioc_send_disable(iocpf->ioc);
}

/*
 * IOC is being disabled
 */
static void
bfa_iocpf_sm_disabling(struct bfa_iocpf_s *iocpf, enum iocpf_event event)
{
        struct bfa_ioc_s *ioc = iocpf->ioc;

        bfa_trc(ioc, event);

        switch (event) {
        case IOCPF_E_FWRSP_DISABLE:
                bfa_iocpf_timer_stop(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
                break;

        case IOCPF_E_FAIL:
                bfa_iocpf_timer_stop(ioc);
                /*
                 * !!! fall through !!!
                 */

        case IOCPF_E_TIMEOUT:
                writel(BFI_IOC_FAIL, ioc->ioc_regs.ioc_fwstate);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
                break;

        case IOCPF_E_FWRSP_ENABLE:
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

static void
bfa_iocpf_sm_disabling_sync_entry(struct bfa_iocpf_s *iocpf)
{
        bfa_ioc_hw_sem_get(iocpf->ioc);
}

/*
 * IOC hb ack request is being removed.
 */
static void
bfa_iocpf_sm_disabling_sync(struct bfa_iocpf_s *iocpf, enum iocpf_event event)
{
        struct bfa_ioc_s *ioc = iocpf->ioc;

        bfa_trc(ioc, event);

        switch (event) {
        case IOCPF_E_SEMLOCKED:
                bfa_ioc_sync_leave(ioc);
                writel(1, ioc->ioc_regs.ioc_sem_reg);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabled);
                break;

        case IOCPF_E_SEM_ERROR:
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail);
                bfa_fsm_send_event(ioc, IOC_E_HWFAILED);
                break;

        case IOCPF_E_FAIL:
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

/*
 * IOC disable completion entry.
 */
static void
bfa_iocpf_sm_disabled_entry(struct bfa_iocpf_s *iocpf)
{
        bfa_ioc_mbox_flush(iocpf->ioc);
        bfa_fsm_send_event(iocpf->ioc, IOC_E_DISABLED);
}

static void
bfa_iocpf_sm_disabled(struct bfa_iocpf_s *iocpf, enum iocpf_event event)
{
        struct bfa_ioc_s *ioc = iocpf->ioc;

        bfa_trc(ioc, event);

        switch (event) {
        case IOCPF_E_ENABLE:
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_semwait);
                break;

        case IOCPF_E_STOP:
                bfa_ioc_firmware_unlock(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

static void
bfa_iocpf_sm_initfail_sync_entry(struct bfa_iocpf_s *iocpf)
{
        bfa_ioc_debug_save_ftrc(iocpf->ioc);
        bfa_ioc_hw_sem_get(iocpf->ioc);
}

/*
 * Hardware initialization failed.
 */
static void
bfa_iocpf_sm_initfail_sync(struct bfa_iocpf_s *iocpf, enum iocpf_event event)
{
        struct bfa_ioc_s *ioc = iocpf->ioc;

        bfa_trc(ioc, event);

        switch (event) {
        case IOCPF_E_SEMLOCKED:
                bfa_ioc_notify_fail(ioc);
                bfa_ioc_sync_leave(ioc);
                writel(BFI_IOC_FAIL, ioc->ioc_regs.ioc_fwstate);
                writel(1, ioc->ioc_regs.ioc_sem_reg);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail);
                break;

        case IOCPF_E_SEM_ERROR:
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail);
                bfa_fsm_send_event(ioc, IOC_E_HWFAILED);
                break;

        case IOCPF_E_DISABLE:
                bfa_sem_timer_stop(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
                break;

        case IOCPF_E_STOP:
                bfa_sem_timer_stop(ioc);
                bfa_ioc_firmware_unlock(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
                break;

        case IOCPF_E_FAIL:
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

static void
bfa_iocpf_sm_initfail_entry(struct bfa_iocpf_s *iocpf)
{
        bfa_trc(iocpf->ioc, 0);
}

/*
 * Hardware initialization failed.
 */
static void
bfa_iocpf_sm_initfail(struct bfa_iocpf_s *iocpf, enum iocpf_event event)
{
        struct bfa_ioc_s *ioc = iocpf->ioc;

        bfa_trc(ioc, event);

        switch (event) {
        case IOCPF_E_DISABLE:
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabled);
                break;

        case IOCPF_E_STOP:
                bfa_ioc_firmware_unlock(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

static void
bfa_iocpf_sm_fail_sync_entry(struct bfa_iocpf_s *iocpf)
{
        /*
         * Mark IOC as failed in hardware and stop firmware.
         */
        bfa_ioc_lpu_stop(iocpf->ioc);

        /*
         * Flush any queued up mailbox requests.
         */
        bfa_ioc_mbox_flush(iocpf->ioc);

        bfa_ioc_hw_sem_get(iocpf->ioc);
}

static void
bfa_iocpf_sm_fail_sync(struct bfa_iocpf_s *iocpf, enum iocpf_event event)
{
        struct bfa_ioc_s *ioc = iocpf->ioc;

        bfa_trc(ioc, event);

        switch (event) {
        case IOCPF_E_SEMLOCKED:
                bfa_ioc_sync_ack(ioc);
                bfa_ioc_notify_fail(ioc);
                if (!iocpf->auto_recover) {
                        bfa_ioc_sync_leave(ioc);
                        writel(BFI_IOC_FAIL, ioc->ioc_regs.ioc_fwstate);
                        writel(1, ioc->ioc_regs.ioc_sem_reg);
                        bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail);
                } else {
                        if (bfa_ioc_sync_complete(ioc))
                                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_hwinit);
                        else {
                                writel(1, ioc->ioc_regs.ioc_sem_reg);
                                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_semwait);
                        }
                }
                break;

        case IOCPF_E_SEM_ERROR:
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail);
                bfa_fsm_send_event(ioc, IOC_E_HWFAILED);
                break;

        case IOCPF_E_DISABLE:
                bfa_sem_timer_stop(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
                break;

        case IOCPF_E_FAIL:
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

static void
bfa_iocpf_sm_fail_entry(struct bfa_iocpf_s *iocpf)
{
        bfa_trc(iocpf->ioc, 0);
}

/*
 * IOC is in failed state.
 */
static void
bfa_iocpf_sm_fail(struct bfa_iocpf_s *iocpf, enum iocpf_event event)
{
        struct bfa_ioc_s *ioc = iocpf->ioc;

        bfa_trc(ioc, event);

        switch (event) {
        case IOCPF_E_DISABLE:
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabled);
                break;

        default:
                bfa_sm_fault(ioc, event);
        }
}

/*
 *  BFA IOC private functions
 */

/*
 * Notify common modules registered for notification.
 */
static void
bfa_ioc_event_notify(struct bfa_ioc_s *ioc, enum bfa_ioc_event_e event)
{
        struct bfa_ioc_notify_s *notify;
        struct list_head        *qe;

        list_for_each(qe, &ioc->notify_q) {
                notify = (struct bfa_ioc_notify_s *)qe;
                notify->cbfn(notify->cbarg, event);
        }
}

static void
bfa_ioc_disable_comp(struct bfa_ioc_s *ioc)
{
        ioc->cbfn->disable_cbfn(ioc->bfa);
        bfa_ioc_event_notify(ioc, BFA_IOC_E_DISABLED);
}

bfa_boolean_t
bfa_ioc_sem_get(void __iomem *sem_reg)
{
        u32 r32;
        int cnt = 0;
#define BFA_SEM_SPINCNT 3000

        r32 = readl(sem_reg);

        while ((r32 & 1) && (cnt < BFA_SEM_SPINCNT)) {
                cnt++;
                udelay(2);
                r32 = readl(sem_reg);
        }

        if (!(r32 & 1))
                return BFA_TRUE;

        return BFA_FALSE;
}

static void
bfa_ioc_hw_sem_get(struct bfa_ioc_s *ioc)
{
        u32     r32;

        /*
         * First read to the semaphore register will return 0, subsequent reads
         * will return 1. Semaphore is released by writing 1 to the register
         */
        r32 = readl(ioc->ioc_regs.ioc_sem_reg);
        if (r32 == ~0) {
                WARN_ON(r32 == ~0);
                bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_SEM_ERROR);
                return;
        }
        if (!(r32 & 1)) {
                bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_SEMLOCKED);
                return;
        }

        bfa_sem_timer_start(ioc);
}

/*
 * Initialize LPU local memory (aka secondary memory / SRAM)
 */
static void
bfa_ioc_lmem_init(struct bfa_ioc_s *ioc)
{
        u32     pss_ctl;
        int             i;
#define PSS_LMEM_INIT_TIME  10000

        pss_ctl = readl(ioc->ioc_regs.pss_ctl_reg);
        pss_ctl &= ~__PSS_LMEM_RESET;
        pss_ctl |= __PSS_LMEM_INIT_EN;

        /*
         * i2c workaround 12.5khz clock
         */
        pss_ctl |= __PSS_I2C_CLK_DIV(3UL);
        writel(pss_ctl, ioc->ioc_regs.pss_ctl_reg);

        /*
         * wait for memory initialization to be complete
         */
        i = 0;
        do {
                pss_ctl = readl(ioc->ioc_regs.pss_ctl_reg);
                i++;
        } while (!(pss_ctl & __PSS_LMEM_INIT_DONE) && (i < PSS_LMEM_INIT_TIME));

        /*
         * If memory initialization is not successful, IOC timeout will catch
         * such failures.
         */
        WARN_ON(!(pss_ctl & __PSS_LMEM_INIT_DONE));
        bfa_trc(ioc, pss_ctl);

        pss_ctl &= ~(__PSS_LMEM_INIT_DONE | __PSS_LMEM_INIT_EN);
        writel(pss_ctl, ioc->ioc_regs.pss_ctl_reg);
}

static void
bfa_ioc_lpu_start(struct bfa_ioc_s *ioc)
{
        u32     pss_ctl;

        /*
         * Take processor out of reset.
         */
        pss_ctl = readl(ioc->ioc_regs.pss_ctl_reg);
        pss_ctl &= ~__PSS_LPU0_RESET;

        writel(pss_ctl, ioc->ioc_regs.pss_ctl_reg);
}

static void
bfa_ioc_lpu_stop(struct bfa_ioc_s *ioc)
{
        u32     pss_ctl;

        /*
         * Put processors in reset.
         */
        pss_ctl = readl(ioc->ioc_regs.pss_ctl_reg);
        pss_ctl |= (__PSS_LPU0_RESET | __PSS_LPU1_RESET);

        writel(pss_ctl, ioc->ioc_regs.pss_ctl_reg);
}

/*
 * Get driver and firmware versions.
 */
void
bfa_ioc_fwver_get(struct bfa_ioc_s *ioc, struct bfi_ioc_image_hdr_s *fwhdr)
{
        u32     pgnum, pgoff;
        u32     loff = 0;
        int             i;
        u32     *fwsig = (u32 *) fwhdr;

        pgnum = PSS_SMEM_PGNUM(ioc->ioc_regs.smem_pg0, loff);
        pgoff = PSS_SMEM_PGOFF(loff);
        writel(pgnum, ioc->ioc_regs.host_page_num_fn);

        for (i = 0; i < (sizeof(struct bfi_ioc_image_hdr_s) / sizeof(u32));
             i++) {
                fwsig[i] =
                        bfa_mem_read(ioc->ioc_regs.smem_page_start, loff);
                loff += sizeof(u32);
        }
}

/*
 * Returns TRUE if same.
 */
bfa_boolean_t
bfa_ioc_fwver_cmp(struct bfa_ioc_s *ioc, struct bfi_ioc_image_hdr_s *fwhdr)
{
        struct bfi_ioc_image_hdr_s *drv_fwhdr;
        int i;

        drv_fwhdr = (struct bfi_ioc_image_hdr_s *)
                bfa_cb_image_get_chunk(bfa_ioc_asic_gen(ioc), 0);

        for (i = 0; i < BFI_IOC_MD5SUM_SZ; i++) {
                if (fwhdr->md5sum[i] != cpu_to_le32(drv_fwhdr->md5sum[i])) {
                        bfa_trc(ioc, i);
                        bfa_trc(ioc, fwhdr->md5sum[i]);
                        bfa_trc(ioc, drv_fwhdr->md5sum[i]);
                        return BFA_FALSE;
                }
        }

        bfa_trc(ioc, fwhdr->md5sum[0]);
        return BFA_TRUE;
}

/*
 * Return true if current running version is valid. Firmware signature and
 * execution context (driver/bios) must match.
 */
static bfa_boolean_t
bfa_ioc_fwver_valid(struct bfa_ioc_s *ioc, u32 boot_env)
{
        struct bfi_ioc_image_hdr_s fwhdr, *drv_fwhdr;

        bfa_ioc_fwver_get(ioc, &fwhdr);
        drv_fwhdr = (struct bfi_ioc_image_hdr_s *)
                bfa_cb_image_get_chunk(bfa_ioc_asic_gen(ioc), 0);

        if (fwhdr.signature != cpu_to_le32(drv_fwhdr->signature)) {
                bfa_trc(ioc, fwhdr.signature);
                bfa_trc(ioc, drv_fwhdr->signature);
                return BFA_FALSE;
        }

        if (swab32(fwhdr.bootenv) != boot_env) {
                bfa_trc(ioc, fwhdr.bootenv);
                bfa_trc(ioc, boot_env);
                return BFA_FALSE;
        }

        return bfa_ioc_fwver_cmp(ioc, &fwhdr);
}

/*
 * Conditionally flush any pending message from firmware at start.
 */
static void
bfa_ioc_msgflush(struct bfa_ioc_s *ioc)
{
        u32     r32;

        r32 = readl(ioc->ioc_regs.lpu_mbox_cmd);
        if (r32)
                writel(1, ioc->ioc_regs.lpu_mbox_cmd);
}

static void
bfa_ioc_hwinit(struct bfa_ioc_s *ioc, bfa_boolean_t force)
{
        enum bfi_ioc_state ioc_fwstate;
        bfa_boolean_t fwvalid;
        u32 boot_type;
        u32 boot_env;

        ioc_fwstate = readl(ioc->ioc_regs.ioc_fwstate);

        if (force)
                ioc_fwstate = BFI_IOC_UNINIT;

        bfa_trc(ioc, ioc_fwstate);

        boot_type = BFI_FWBOOT_TYPE_NORMAL;
        boot_env = BFI_FWBOOT_ENV_OS;

        /*
         * check if firmware is valid
         */
        fwvalid = (ioc_fwstate == BFI_IOC_UNINIT) ?
                BFA_FALSE : bfa_ioc_fwver_valid(ioc, boot_env);

        if (!fwvalid) {
                bfa_ioc_boot(ioc, boot_type, boot_env);
                bfa_ioc_poll_fwinit(ioc);
                return;
        }

        /*
         * If hardware initialization is in progress (initialized by other IOC),
         * just wait for an initialization completion interrupt.
         */
        if (ioc_fwstate == BFI_IOC_INITING) {
                bfa_ioc_poll_fwinit(ioc);
                return;
        }

        /*
         * If IOC function is disabled and firmware version is same,
         * just re-enable IOC.
         *
         * If option rom, IOC must not be in operational state. With
         * convergence, IOC will be in operational state when 2nd driver
         * is loaded.
         */
        if (ioc_fwstate == BFI_IOC_DISABLED || ioc_fwstate == BFI_IOC_OP) {

                /*
                 * When using MSI-X any pending firmware ready event should
                 * be flushed. Otherwise MSI-X interrupts are not delivered.
                 */
                bfa_ioc_msgflush(ioc);
                bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_FWREADY);
                return;
        }

        /*
         * Initialize the h/w for any other states.
         */
        bfa_ioc_boot(ioc, boot_type, boot_env);
        bfa_ioc_poll_fwinit(ioc);
}

static void
bfa_ioc_timeout(void *ioc_arg)
{
        struct bfa_ioc_s  *ioc = (struct bfa_ioc_s *) ioc_arg;

        bfa_trc(ioc, 0);
        bfa_fsm_send_event(ioc, IOC_E_TIMEOUT);
}

void
bfa_ioc_mbox_send(struct bfa_ioc_s *ioc, void *ioc_msg, int len)
{
        u32 *msgp = (u32 *) ioc_msg;
        u32 i;

        bfa_trc(ioc, msgp[0]);
        bfa_trc(ioc, len);

        WARN_ON(len > BFI_IOC_MSGLEN_MAX);

        /*
         * first write msg to mailbox registers
         */
        for (i = 0; i < len / sizeof(u32); i++)
                writel(cpu_to_le32(msgp[i]),
                        ioc->ioc_regs.hfn_mbox + i * sizeof(u32));

        for (; i < BFI_IOC_MSGLEN_MAX / sizeof(u32); i++)
                writel(0, ioc->ioc_regs.hfn_mbox + i * sizeof(u32));

        /*
         * write 1 to mailbox CMD to trigger LPU event
         */
        writel(1, ioc->ioc_regs.hfn_mbox_cmd);
        (void) readl(ioc->ioc_regs.hfn_mbox_cmd);
}

static void
bfa_ioc_send_enable(struct bfa_ioc_s *ioc)
{
        struct bfi_ioc_ctrl_req_s enable_req;
        struct timeval tv;

        bfi_h2i_set(enable_req.mh, BFI_MC_IOC, BFI_IOC_H2I_ENABLE_REQ,
                    bfa_ioc_portid(ioc));
        enable_req.clscode = cpu_to_be16(ioc->clscode);
        do_gettimeofday(&tv);
        enable_req.tv_sec = be32_to_cpu(tv.tv_sec);
        bfa_ioc_mbox_send(ioc, &enable_req, sizeof(struct bfi_ioc_ctrl_req_s));
}

static void
bfa_ioc_send_disable(struct bfa_ioc_s *ioc)
{
        struct bfi_ioc_ctrl_req_s disable_req;

        bfi_h2i_set(disable_req.mh, BFI_MC_IOC, BFI_IOC_H2I_DISABLE_REQ,
                    bfa_ioc_portid(ioc));
        bfa_ioc_mbox_send(ioc, &disable_req, sizeof(struct bfi_ioc_ctrl_req_s));
}

static void
bfa_ioc_send_getattr(struct bfa_ioc_s *ioc)
{
        struct bfi_ioc_getattr_req_s    attr_req;

        bfi_h2i_set(attr_req.mh, BFI_MC_IOC, BFI_IOC_H2I_GETATTR_REQ,
                    bfa_ioc_portid(ioc));
        bfa_dma_be_addr_set(attr_req.attr_addr, ioc->attr_dma.pa);
        bfa_ioc_mbox_send(ioc, &attr_req, sizeof(attr_req));
}

static void
bfa_ioc_hb_check(void *cbarg)
{
        struct bfa_ioc_s  *ioc = cbarg;
        u32     hb_count;

        hb_count = readl(ioc->ioc_regs.heartbeat);
        if (ioc->hb_count == hb_count) {
                bfa_ioc_recover(ioc);
                return;
        } else {
                ioc->hb_count = hb_count;
        }

        bfa_ioc_mbox_poll(ioc);
        bfa_hb_timer_start(ioc);
}

static void
bfa_ioc_hb_monitor(struct bfa_ioc_s *ioc)
{
        ioc->hb_count = readl(ioc->ioc_regs.heartbeat);
        bfa_hb_timer_start(ioc);
}

/*
 *      Initiate a full firmware download.
 */
static void
bfa_ioc_download_fw(struct bfa_ioc_s *ioc, u32 boot_type,
                    u32 boot_env)
{
        u32 *fwimg;
        u32 pgnum, pgoff;
        u32 loff = 0;
        u32 chunkno = 0;
        u32 i;
        u32 asicmode;

        bfa_trc(ioc, bfa_cb_image_get_size(bfa_ioc_asic_gen(ioc)));
        fwimg = bfa_cb_image_get_chunk(bfa_ioc_asic_gen(ioc), chunkno);

        pgnum = PSS_SMEM_PGNUM(ioc->ioc_regs.smem_pg0, loff);
        pgoff = PSS_SMEM_PGOFF(loff);

        writel(pgnum, ioc->ioc_regs.host_page_num_fn);

        for (i = 0; i < bfa_cb_image_get_size(bfa_ioc_asic_gen(ioc)); i++) {

                if (BFA_IOC_FLASH_CHUNK_NO(i) != chunkno) {
                        chunkno = BFA_IOC_FLASH_CHUNK_NO(i);
                        fwimg = bfa_cb_image_get_chunk(bfa_ioc_asic_gen(ioc),
                                        BFA_IOC_FLASH_CHUNK_ADDR(chunkno));
                }

                /*
                 * write smem
                 */
                bfa_mem_write(ioc->ioc_regs.smem_page_start, loff,
                        cpu_to_le32(fwimg[BFA_IOC_FLASH_OFFSET_IN_CHUNK(i)]));

                loff += sizeof(u32);

                /*
                 * handle page offset wrap around
                 */
                loff = PSS_SMEM_PGOFF(loff);
                if (loff == 0) {
                        pgnum++;
                        writel(pgnum, ioc->ioc_regs.host_page_num_fn);
                }
        }

        writel(PSS_SMEM_PGNUM(ioc->ioc_regs.smem_pg0, 0),
                        ioc->ioc_regs.host_page_num_fn);

        /*
         * Set boot type and device mode at the end.
         */
        asicmode = BFI_FWBOOT_DEVMODE(ioc->asic_gen, ioc->asic_mode,
                                ioc->port0_mode, ioc->port1_mode);
        bfa_mem_write(ioc->ioc_regs.smem_page_start, BFI_FWBOOT_DEVMODE_OFF,
                        swab32(asicmode));
        bfa_mem_write(ioc->ioc_regs.smem_page_start, BFI_FWBOOT_TYPE_OFF,
                        swab32(boot_type));
        bfa_mem_write(ioc->ioc_regs.smem_page_start, BFI_FWBOOT_ENV_OFF,
                        swab32(boot_env));
}


/*
 * Update BFA configuration from firmware configuration.
 */
static void
bfa_ioc_getattr_reply(struct bfa_ioc_s *ioc)
{
        struct bfi_ioc_attr_s   *attr = ioc->attr;

        attr->adapter_prop  = be32_to_cpu(attr->adapter_prop);
        attr->card_type     = be32_to_cpu(attr->card_type);
        attr->maxfrsize     = be16_to_cpu(attr->maxfrsize);
        ioc->fcmode     = (attr->port_mode == BFI_PORT_MODE_FC);
        attr->mfg_year  = be16_to_cpu(attr->mfg_year);

        bfa_fsm_send_event(ioc, IOC_E_FWRSP_GETATTR);
}

/*
 * Attach time initialization of mbox logic.
 */
static void
bfa_ioc_mbox_attach(struct bfa_ioc_s *ioc)
{
        struct bfa_ioc_mbox_mod_s       *mod = &ioc->mbox_mod;
        int     mc;

        INIT_LIST_HEAD(&mod->cmd_q);
        for (mc = 0; mc < BFI_MC_MAX; mc++) {
                mod->mbhdlr[mc].cbfn = NULL;
                mod->mbhdlr[mc].cbarg = ioc->bfa;
        }
}

/*
 * Mbox poll timer -- restarts any pending mailbox requests.
 */
static void
bfa_ioc_mbox_poll(struct bfa_ioc_s *ioc)
{
        struct bfa_ioc_mbox_mod_s       *mod = &ioc->mbox_mod;
        struct bfa_mbox_cmd_s           *cmd;
        u32                     stat;

        /*
         * If no command pending, do nothing
         */
        if (list_empty(&mod->cmd_q))
                return;

        /*
         * If previous command is not yet fetched by firmware, do nothing
         */
        stat = readl(ioc->ioc_regs.hfn_mbox_cmd);
        if (stat)
                return;

        /*
         * Enqueue command to firmware.
         */
        bfa_q_deq(&mod->cmd_q, &cmd);
        bfa_ioc_mbox_send(ioc, cmd->msg, sizeof(cmd->msg));
}

/*
 * Cleanup any pending requests.
 */
static void
bfa_ioc_mbox_flush(struct bfa_ioc_s *ioc)
{
        struct bfa_ioc_mbox_mod_s       *mod = &ioc->mbox_mod;
        struct bfa_mbox_cmd_s           *cmd;

        while (!list_empty(&mod->cmd_q))
                bfa_q_deq(&mod->cmd_q, &cmd);
}

/*
 * Read data from SMEM to host through PCI memmap
 *
 * @param[in]   ioc     memory for IOC
 * @param[in]   tbuf    app memory to store data from smem
 * @param[in]   soff    smem offset
 * @param[in]   sz      size of smem in bytes
 */
static bfa_status_t
bfa_ioc_smem_read(struct bfa_ioc_s *ioc, void *tbuf, u32 soff, u32 sz)
{
        u32 pgnum, loff;
        __be32 r32;
        int i, len;
        u32 *buf = tbuf;

        pgnum = PSS_SMEM_PGNUM(ioc->ioc_regs.smem_pg0, soff);
        loff = PSS_SMEM_PGOFF(soff);
        bfa_trc(ioc, pgnum);
        bfa_trc(ioc, loff);
        bfa_trc(ioc, sz);

        /*
         *  Hold semaphore to serialize pll init and fwtrc.
         */
        if (BFA_FALSE == bfa_ioc_sem_get(ioc->ioc_regs.ioc_init_sem_reg)) {
                bfa_trc(ioc, 0);
                return BFA_STATUS_FAILED;
        }

        writel(pgnum, ioc->ioc_regs.host_page_num_fn);

        len = sz/sizeof(u32);
        bfa_trc(ioc, len);
        for (i = 0; i < len; i++) {
                r32 = bfa_mem_read(ioc->ioc_regs.smem_page_start, loff);
                buf[i] = be32_to_cpu(r32);
                loff += sizeof(u32);

                /*
                 * handle page offset wrap around
                 */
                loff = PSS_SMEM_PGOFF(loff);
                if (loff == 0) {
                        pgnum++;
                        writel(pgnum, ioc->ioc_regs.host_page_num_fn);
                }
        }
        writel(PSS_SMEM_PGNUM(ioc->ioc_regs.smem_pg0, 0),
                        ioc->ioc_regs.host_page_num_fn);
        /*
         *  release semaphore.
         */
        readl(ioc->ioc_regs.ioc_init_sem_reg);
        writel(1, ioc->ioc_regs.ioc_init_sem_reg);

        bfa_trc(ioc, pgnum);
        return BFA_STATUS_OK;
}

/*
 * Clear SMEM data from host through PCI memmap
 *
 * @param[in]   ioc     memory for IOC
 * @param[in]   soff    smem offset
 * @param[in]   sz      size of smem in bytes
 */
static bfa_status_t
bfa_ioc_smem_clr(struct bfa_ioc_s *ioc, u32 soff, u32 sz)
{
        int i, len;
        u32 pgnum, loff;

        pgnum = PSS_SMEM_PGNUM(ioc->ioc_regs.smem_pg0, soff);
        loff = PSS_SMEM_PGOFF(soff);
        bfa_trc(ioc, pgnum);
        bfa_trc(ioc, loff);
        bfa_trc(ioc, sz);

        /*
         *  Hold semaphore to serialize pll init and fwtrc.
         */
        if (BFA_FALSE == bfa_ioc_sem_get(ioc->ioc_regs.ioc_init_sem_reg)) {
                bfa_trc(ioc, 0);
                return BFA_STATUS_FAILED;
        }

        writel(pgnum, ioc->ioc_regs.host_page_num_fn);

        len = sz/sizeof(u32); /* len in words */
        bfa_trc(ioc, len);
        for (i = 0; i < len; i++) {
                bfa_mem_write(ioc->ioc_regs.smem_page_start, loff, 0);
                loff += sizeof(u32);

                /*
                 * handle page offset wrap around
                 */
                loff = PSS_SMEM_PGOFF(loff);
                if (loff == 0) {
                        pgnum++;
                        writel(pgnum, ioc->ioc_regs.host_page_num_fn);
                }
        }
        writel(PSS_SMEM_PGNUM(ioc->ioc_regs.smem_pg0, 0),
                        ioc->ioc_regs.host_page_num_fn);

        /*
         *  release semaphore.
         */
        readl(ioc->ioc_regs.ioc_init_sem_reg);
        writel(1, ioc->ioc_regs.ioc_init_sem_reg);
        bfa_trc(ioc, pgnum);
        return BFA_STATUS_OK;
}

static void
bfa_ioc_fail_notify(struct bfa_ioc_s *ioc)
{
        struct bfad_s *bfad = (struct bfad_s *)ioc->bfa->bfad;

        /*
         * Notify driver and common modules registered for notification.
         */
        ioc->cbfn->hbfail_cbfn(ioc->bfa);
        bfa_ioc_event_notify(ioc, BFA_IOC_E_FAILED);

        bfa_ioc_debug_save_ftrc(ioc);

        BFA_LOG(KERN_CRIT, bfad, bfa_log_level,
                "Heart Beat of IOC has failed\n");
        bfa_ioc_aen_post(ioc, BFA_IOC_AEN_HBFAIL);

}

static void
bfa_ioc_pf_fwmismatch(struct bfa_ioc_s *ioc)
{
        struct bfad_s *bfad = (struct bfad_s *)ioc->bfa->bfad;
        /*
         * Provide enable completion callback.
         */
        ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
        BFA_LOG(KERN_WARNING, bfad, bfa_log_level,
                "Running firmware version is incompatible "
                "with the driver version\n");
        bfa_ioc_aen_post(ioc, BFA_IOC_AEN_FWMISMATCH);
}

bfa_status_t
bfa_ioc_pll_init(struct bfa_ioc_s *ioc)
{

        /*
         *  Hold semaphore so that nobody can access the chip during init.
         */
        bfa_ioc_sem_get(ioc->ioc_regs.ioc_init_sem_reg);

        bfa_ioc_pll_init_asic(ioc);

        ioc->pllinit = BFA_TRUE;

        /*
         * Initialize LMEM
         */
        bfa_ioc_lmem_init(ioc);

        /*
         *  release semaphore.
         */
        readl(ioc->ioc_regs.ioc_init_sem_reg);
        writel(1, ioc->ioc_regs.ioc_init_sem_reg);

        return BFA_STATUS_OK;
}

/*
 * Interface used by diag module to do firmware boot with memory test
 * as the entry vector.
 */
void
bfa_ioc_boot(struct bfa_ioc_s *ioc, u32 boot_type, u32 boot_env)
{
        bfa_ioc_stats(ioc, ioc_boots);

        if (bfa_ioc_pll_init(ioc) != BFA_STATUS_OK)
                return;

        /*
         * Initialize IOC state of all functions on a chip reset.
         */
        if (boot_type == BFI_FWBOOT_TYPE_MEMTEST) {
                writel(BFI_IOC_MEMTEST, ioc->ioc_regs.ioc_fwstate);
                writel(BFI_IOC_MEMTEST, ioc->ioc_regs.alt_ioc_fwstate);
        } else {
                writel(BFI_IOC_INITING, ioc->ioc_regs.ioc_fwstate);
                writel(BFI_IOC_INITING, ioc->ioc_regs.alt_ioc_fwstate);
        }

        bfa_ioc_msgflush(ioc);
        bfa_ioc_download_fw(ioc, boot_type, boot_env);
        bfa_ioc_lpu_start(ioc);
}

/*
 * Enable/disable IOC failure auto recovery.
 */
void
bfa_ioc_auto_recover(bfa_boolean_t auto_recover)
{
        bfa_auto_recover = auto_recover;
}



bfa_boolean_t
bfa_ioc_is_operational(struct bfa_ioc_s *ioc)
{
        return bfa_fsm_cmp_state(ioc, bfa_ioc_sm_op);
}

bfa_boolean_t
bfa_ioc_is_initialized(struct bfa_ioc_s *ioc)
{
        u32 r32 = readl(ioc->ioc_regs.ioc_fwstate);

        return ((r32 != BFI_IOC_UNINIT) &&
                (r32 != BFI_IOC_INITING) &&
                (r32 != BFI_IOC_MEMTEST));
}

bfa_boolean_t
bfa_ioc_msgget(struct bfa_ioc_s *ioc, void *mbmsg)
{
        __be32  *msgp = mbmsg;
        u32     r32;
        int             i;

        r32 = readl(ioc->ioc_regs.lpu_mbox_cmd);
        if ((r32 & 1) == 0)
                return BFA_FALSE;

        /*
         * read the MBOX msg
         */
        for (i = 0; i < (sizeof(union bfi_ioc_i2h_msg_u) / sizeof(u32));
             i++) {
                r32 = readl(ioc->ioc_regs.lpu_mbox +
                                   i * sizeof(u32));
                msgp[i] = cpu_to_be32(r32);
        }

        /*
         * turn off mailbox interrupt by clearing mailbox status
         */
        writel(1, ioc->ioc_regs.lpu_mbox_cmd);
        readl(ioc->ioc_regs.lpu_mbox_cmd);

        return BFA_TRUE;
}

void
bfa_ioc_isr(struct bfa_ioc_s *ioc, struct bfi_mbmsg_s *m)
{
        union bfi_ioc_i2h_msg_u *msg;
        struct bfa_iocpf_s *iocpf = &ioc->iocpf;

        msg = (union bfi_ioc_i2h_msg_u *) m;

        bfa_ioc_stats(ioc, ioc_isrs);

        switch (msg->mh.msg_id) {
        case BFI_IOC_I2H_HBEAT:
                break;

        case BFI_IOC_I2H_ENABLE_REPLY:
                ioc->port_mode = ioc->port_mode_cfg =
                                (enum bfa_mode_s)msg->fw_event.port_mode;
                ioc->ad_cap_bm = msg->fw_event.cap_bm;
                bfa_fsm_send_event(iocpf, IOCPF_E_FWRSP_ENABLE);
                break;

        case BFI_IOC_I2H_DISABLE_REPLY:
                bfa_fsm_send_event(iocpf, IOCPF_E_FWRSP_DISABLE);
                break;

        case BFI_IOC_I2H_GETATTR_REPLY:
                bfa_ioc_getattr_reply(ioc);
                break;

        default:
                bfa_trc(ioc, msg->mh.msg_id);
                WARN_ON(1);
        }
}

/*
 * IOC attach time initialization and setup.
 *
 * @param[in]   ioc     memory for IOC
 * @param[in]   bfa     driver instance structure
 */
void
bfa_ioc_attach(struct bfa_ioc_s *ioc, void *bfa, struct bfa_ioc_cbfn_s *cbfn,
               struct bfa_timer_mod_s *timer_mod)
{
        ioc->bfa        = bfa;
        ioc->cbfn       = cbfn;
        ioc->timer_mod  = timer_mod;
        ioc->fcmode     = BFA_FALSE;
        ioc->pllinit    = BFA_FALSE;
        ioc->dbg_fwsave_once = BFA_TRUE;
        ioc->iocpf.ioc  = ioc;

        bfa_ioc_mbox_attach(ioc);
        INIT_LIST_HEAD(&ioc->notify_q);

        bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
        bfa_fsm_send_event(ioc, IOC_E_RESET);
}

/*
 * Driver detach time IOC cleanup.
 */
void
bfa_ioc_detach(struct bfa_ioc_s *ioc)
{
        bfa_fsm_send_event(ioc, IOC_E_DETACH);
        INIT_LIST_HEAD(&ioc->notify_q);
}

/*
 * Setup IOC PCI properties.
 *
 * @param[in]   pcidev  PCI device information for this IOC
 */
void
bfa_ioc_pci_init(struct bfa_ioc_s *ioc, struct bfa_pcidev_s *pcidev,
                enum bfi_pcifn_class clscode)
{
        ioc->clscode    = clscode;
        ioc->pcidev     = *pcidev;

        /*
         * Initialize IOC and device personality
         */
        ioc->port0_mode = ioc->port1_mode = BFI_PORT_MODE_FC;
        ioc->asic_mode  = BFI_ASIC_MODE_FC;

        switch (pcidev->device_id) {
        case BFA_PCI_DEVICE_ID_FC_8G1P:
        case BFA_PCI_DEVICE_ID_FC_8G2P:
                ioc->asic_gen = BFI_ASIC_GEN_CB;
                ioc->fcmode = BFA_TRUE;
                ioc->port_mode = ioc->port_mode_cfg = BFA_MODE_HBA;
                ioc->ad_cap_bm = BFA_CM_HBA;
                break;

        case BFA_PCI_DEVICE_ID_CT:
                ioc->asic_gen = BFI_ASIC_GEN_CT;
                ioc->port0_mode = ioc->port1_mode = BFI_PORT_MODE_ETH;
                ioc->asic_mode  = BFI_ASIC_MODE_ETH;
                ioc->port_mode = ioc->port_mode_cfg = BFA_MODE_CNA;
                ioc->ad_cap_bm = BFA_CM_CNA;
                break;

        case BFA_PCI_DEVICE_ID_CT_FC:
                ioc->asic_gen = BFI_ASIC_GEN_CT;
                ioc->fcmode = BFA_TRUE;
                ioc->port_mode = ioc->port_mode_cfg = BFA_MODE_HBA;
                ioc->ad_cap_bm = BFA_CM_HBA;
                break;

        case BFA_PCI_DEVICE_ID_CT2:
                ioc->asic_gen = BFI_ASIC_GEN_CT2;
                if (clscode == BFI_PCIFN_CLASS_FC &&
                    pcidev->ssid == BFA_PCI_CT2_SSID_FC) {
                        ioc->asic_mode  = BFI_ASIC_MODE_FC16;
                        ioc->fcmode = BFA_TRUE;
                        ioc->port_mode = ioc->port_mode_cfg = BFA_MODE_HBA;
                        ioc->ad_cap_bm = BFA_CM_HBA;
                } else {
                        ioc->port0_mode = ioc->port1_mode = BFI_PORT_MODE_ETH;
                        ioc->asic_mode  = BFI_ASIC_MODE_ETH;
                        if (pcidev->ssid == BFA_PCI_CT2_SSID_FCoE) {
                                ioc->port_mode =
                                ioc->port_mode_cfg = BFA_MODE_CNA;
                                ioc->ad_cap_bm = BFA_CM_CNA;
                        } else {
                                ioc->port_mode =
                                ioc->port_mode_cfg = BFA_MODE_NIC;
                                ioc->ad_cap_bm = BFA_CM_NIC;
                        }
                }
                break;

        default:
                WARN_ON(1);
        }

        /*
         * Set asic specific interfaces. See bfa_ioc_cb.c and bfa_ioc_ct.c
         */
        if (ioc->asic_gen == BFI_ASIC_GEN_CB)
                bfa_ioc_set_cb_hwif(ioc);
        else if (ioc->asic_gen == BFI_ASIC_GEN_CT)
                bfa_ioc_set_ct_hwif(ioc);
        else {
                WARN_ON(ioc->asic_gen != BFI_ASIC_GEN_CT2);
                bfa_ioc_set_ct2_hwif(ioc);
                bfa_ioc_ct2_poweron(ioc);
        }

        bfa_ioc_map_port(ioc);
        bfa_ioc_reg_init(ioc);
}

/*
 * Initialize IOC dma memory
 *
 * @param[in]   dm_kva  kernel virtual address of IOC dma memory
 * @param[in]   dm_pa   physical address of IOC dma memory
 */
void
bfa_ioc_mem_claim(struct bfa_ioc_s *ioc,  u8 *dm_kva, u64 dm_pa)
{
        /*
         * dma memory for firmware attribute
         */
        ioc->attr_dma.kva = dm_kva;
        ioc->attr_dma.pa = dm_pa;
        ioc->attr = (struct bfi_ioc_attr_s *) dm_kva;
}

void
bfa_ioc_enable(struct bfa_ioc_s *ioc)
{
        bfa_ioc_stats(ioc, ioc_enables);
        ioc->dbg_fwsave_once = BFA_TRUE;

        bfa_fsm_send_event(ioc, IOC_E_ENABLE);
}

void
bfa_ioc_disable(struct bfa_ioc_s *ioc)
{
        bfa_ioc_stats(ioc, ioc_disables);
        bfa_fsm_send_event(ioc, IOC_E_DISABLE);
}

void
bfa_ioc_suspend(struct bfa_ioc_s *ioc)
{
        ioc->dbg_fwsave_once = BFA_TRUE;
        bfa_fsm_send_event(ioc, IOC_E_HWERROR);
}

/*
 * Initialize memory for saving firmware trace. Driver must initialize
 * trace memory before call bfa_ioc_enable().
 */
void
bfa_ioc_debug_memclaim(struct bfa_ioc_s *ioc, void *dbg_fwsave)
{
        ioc->dbg_fwsave     = dbg_fwsave;
        ioc->dbg_fwsave_len = BFA_DBG_FWTRC_LEN;
}

/*
 * Register mailbox message handler functions
 *
 * @param[in]   ioc             IOC instance
 * @param[in]   mcfuncs         message class handler functions
 */
void
bfa_ioc_mbox_register(struct bfa_ioc_s *ioc, bfa_ioc_mbox_mcfunc_t *mcfuncs)
{
        struct bfa_ioc_mbox_mod_s       *mod = &ioc->mbox_mod;
        int                             mc;

        for (mc = 0; mc < BFI_MC_MAX; mc++)
                mod->mbhdlr[mc].cbfn = mcfuncs[mc];
}

/*
 * Register mailbox message handler function, to be called by common modules
 */
void
bfa_ioc_mbox_regisr(struct bfa_ioc_s *ioc, enum bfi_mclass mc,
                    bfa_ioc_mbox_mcfunc_t cbfn, void *cbarg)
{
        struct bfa_ioc_mbox_mod_s       *mod = &ioc->mbox_mod;

        mod->mbhdlr[mc].cbfn    = cbfn;
        mod->mbhdlr[mc].cbarg   = cbarg;
}

/*
 * Queue a mailbox command request to firmware. Waits if mailbox is busy.
 * Responsibility of caller to serialize
 *
 * @param[in]   ioc     IOC instance
 * @param[i]    cmd     Mailbox command
 */
void
bfa_ioc_mbox_queue(struct bfa_ioc_s *ioc, struct bfa_mbox_cmd_s *cmd)
{
        struct bfa_ioc_mbox_mod_s       *mod = &ioc->mbox_mod;
        u32                     stat;

        /*
         * If a previous command is pending, queue new command
         */
        if (!list_empty(&mod->cmd_q)) {
                list_add_tail(&cmd->qe, &mod->cmd_q);
                return;
        }

        /*
         * If mailbox is busy, queue command for poll timer
         */
        stat = readl(ioc->ioc_regs.hfn_mbox_cmd);
        if (stat) {
                list_add_tail(&cmd->qe, &mod->cmd_q);
                return;
        }

        /*
         * mailbox is free -- queue command to firmware
         */
        bfa_ioc_mbox_send(ioc, cmd->msg, sizeof(cmd->msg));
}

/*
 * Handle mailbox interrupts
 */
void
bfa_ioc_mbox_isr(struct bfa_ioc_s *ioc)
{
        struct bfa_ioc_mbox_mod_s       *mod = &ioc->mbox_mod;
        struct bfi_mbmsg_s              m;
        int                             mc;

        if (bfa_ioc_msgget(ioc, &m)) {
                /*
                 * Treat IOC message class as special.
                 */
                mc = m.mh.msg_class;
                if (mc == BFI_MC_IOC) {
                        bfa_ioc_isr(ioc, &m);
                        return;
                }

                if ((mc >= BFI_MC_MAX) || (mod->mbhdlr[mc].cbfn == NULL))
                        return;

                mod->mbhdlr[mc].cbfn(mod->mbhdlr[mc].cbarg, &m);
        }

        bfa_ioc_lpu_read_stat(ioc);

        /*
         * Try to send pending mailbox commands
         */
        bfa_ioc_mbox_poll(ioc);
}

void
bfa_ioc_error_isr(struct bfa_ioc_s *ioc)
{
        bfa_ioc_stats(ioc, ioc_hbfails);
        ioc->stats.hb_count = ioc->hb_count;
        bfa_fsm_send_event(ioc, IOC_E_HWERROR);
}

/*
 * return true if IOC is disabled
 */
bfa_boolean_t
bfa_ioc_is_disabled(struct bfa_ioc_s *ioc)
{
        return bfa_fsm_cmp_state(ioc, bfa_ioc_sm_disabling) ||
                bfa_fsm_cmp_state(ioc, bfa_ioc_sm_disabled);
}

/*
 * return true if IOC firmware is different.
 */
bfa_boolean_t
bfa_ioc_fw_mismatch(struct bfa_ioc_s *ioc)
{
        return bfa_fsm_cmp_state(ioc, bfa_ioc_sm_reset) ||
                bfa_fsm_cmp_state(&ioc->iocpf, bfa_iocpf_sm_fwcheck) ||
                bfa_fsm_cmp_state(&ioc->iocpf, bfa_iocpf_sm_mismatch);
}

#define bfa_ioc_state_disabled(__sm)            \
        (((__sm) == BFI_IOC_UNINIT) ||          \
         ((__sm) == BFI_IOC_INITING) ||         \
         ((__sm) == BFI_IOC_HWINIT) ||          \
         ((__sm) == BFI_IOC_DISABLED) ||        \
         ((__sm) == BFI_IOC_FAIL) ||            \
         ((__sm) == BFI_IOC_CFG_DISABLED))

/*
 * Check if adapter is disabled -- both IOCs should be in a disabled
 * state.
 */
bfa_boolean_t
bfa_ioc_adapter_is_disabled(struct bfa_ioc_s *ioc)
{
        u32     ioc_state;

        if (!bfa_fsm_cmp_state(ioc, bfa_ioc_sm_disabled))
                return BFA_FALSE;

        ioc_state = readl(ioc->ioc_regs.ioc_fwstate);
        if (!bfa_ioc_state_disabled(ioc_state))
                return BFA_FALSE;

        if (ioc->pcidev.device_id != BFA_PCI_DEVICE_ID_FC_8G1P) {
                ioc_state = readl(ioc->ioc_regs.alt_ioc_fwstate);
                if (!bfa_ioc_state_disabled(ioc_state))
                        return BFA_FALSE;
        }

        return BFA_TRUE;
}

/*
 * Reset IOC fwstate registers.
 */
void
bfa_ioc_reset_fwstate(struct bfa_ioc_s *ioc)
{
        writel(BFI_IOC_UNINIT, ioc->ioc_regs.ioc_fwstate);
        writel(BFI_IOC_UNINIT, ioc->ioc_regs.alt_ioc_fwstate);
}

#define BFA_MFG_NAME "Brocade"
void
bfa_ioc_get_adapter_attr(struct bfa_ioc_s *ioc,
                         struct bfa_adapter_attr_s *ad_attr)
{
        struct bfi_ioc_attr_s   *ioc_attr;

        ioc_attr = ioc->attr;

        bfa_ioc_get_adapter_serial_num(ioc, ad_attr->serial_num);
        bfa_ioc_get_adapter_fw_ver(ioc, ad_attr->fw_ver);
        bfa_ioc_get_adapter_optrom_ver(ioc, ad_attr->optrom_ver);
        bfa_ioc_get_adapter_manufacturer(ioc, ad_attr->manufacturer);
        memcpy(&ad_attr->vpd, &ioc_attr->vpd,
                      sizeof(struct bfa_mfg_vpd_s));

        ad_attr->nports = bfa_ioc_get_nports(ioc);
        ad_attr->max_speed = bfa_ioc_speed_sup(ioc);

        bfa_ioc_get_adapter_model(ioc, ad_attr->model);
        /* For now, model descr uses same model string */
        bfa_ioc_get_adapter_model(ioc, ad_attr->model_descr);

        ad_attr->card_type = ioc_attr->card_type;
        ad_attr->is_mezz = bfa_mfg_is_mezz(ioc_attr->card_type);

        if (BFI_ADAPTER_IS_SPECIAL(ioc_attr->adapter_prop))
                ad_attr->prototype = 1;
        else
                ad_attr->prototype = 0;

        ad_attr->pwwn = ioc->attr->pwwn;
        ad_attr->mac  = bfa_ioc_get_mac(ioc);

        ad_attr->pcie_gen = ioc_attr->pcie_gen;
        ad_attr->pcie_lanes = ioc_attr->pcie_lanes;
        ad_attr->pcie_lanes_orig = ioc_attr->pcie_lanes_orig;
        ad_attr->asic_rev = ioc_attr->asic_rev;

        bfa_ioc_get_pci_chip_rev(ioc, ad_attr->hw_ver);

        ad_attr->cna_capable = bfa_ioc_is_cna(ioc);
        ad_attr->trunk_capable = (ad_attr->nports > 1) &&
                                  !bfa_ioc_is_cna(ioc) && !ad_attr->is_mezz;
        ad_attr->mfg_day = ioc_attr->mfg_day;
        ad_attr->mfg_month = ioc_attr->mfg_month;
        ad_attr->mfg_year = ioc_attr->mfg_year;
}

enum bfa_ioc_type_e
bfa_ioc_get_type(struct bfa_ioc_s *ioc)
{
        if (ioc->clscode == BFI_PCIFN_CLASS_ETH)
                return BFA_IOC_TYPE_LL;

        WARN_ON(ioc->clscode != BFI_PCIFN_CLASS_FC);

        return (ioc->attr->port_mode == BFI_PORT_MODE_FC)
                ? BFA_IOC_TYPE_FC : BFA_IOC_TYPE_FCoE;
}

void
bfa_ioc_get_adapter_serial_num(struct bfa_ioc_s *ioc, char *serial_num)
{
        memset((void *)serial_num, 0, BFA_ADAPTER_SERIAL_NUM_LEN);
        memcpy((void *)serial_num,
                        (void *)ioc->attr->brcd_serialnum,
                        BFA_ADAPTER_SERIAL_NUM_LEN);
}

void
bfa_ioc_get_adapter_fw_ver(struct bfa_ioc_s *ioc, char *fw_ver)
{
        memset((void *)fw_ver, 0, BFA_VERSION_LEN);
        memcpy(fw_ver, ioc->attr->fw_version, BFA_VERSION_LEN);
}

void
bfa_ioc_get_pci_chip_rev(struct bfa_ioc_s *ioc, char *chip_rev)
{
        WARN_ON(!chip_rev);

        memset((void *)chip_rev, 0, BFA_IOC_CHIP_REV_LEN);

        chip_rev[0] = 'R';
        chip_rev[1] = 'e';
        chip_rev[2] = 'v';
        chip_rev[3] = '-';
        chip_rev[4] = ioc->attr->asic_rev;
        chip_rev[5] = '\0';
}

void
bfa_ioc_get_adapter_optrom_ver(struct bfa_ioc_s *ioc, char *optrom_ver)
{
        memset((void *)optrom_ver, 0, BFA_VERSION_LEN);
        memcpy(optrom_ver, ioc->attr->optrom_version,
                      BFA_VERSION_LEN);
}

void
bfa_ioc_get_adapter_manufacturer(struct bfa_ioc_s *ioc, char *manufacturer)
{
        memset((void *)manufacturer, 0, BFA_ADAPTER_MFG_NAME_LEN);
        memcpy(manufacturer, BFA_MFG_NAME, BFA_ADAPTER_MFG_NAME_LEN);
}

void
bfa_ioc_get_adapter_model(struct bfa_ioc_s *ioc, char *model)
{
        struct bfi_ioc_attr_s   *ioc_attr;

        WARN_ON(!model);
        memset((void *)model, 0, BFA_ADAPTER_MODEL_NAME_LEN);

        ioc_attr = ioc->attr;

        snprintf(model, BFA_ADAPTER_MODEL_NAME_LEN, "%s-%u",
                        BFA_MFG_NAME, ioc_attr->card_type);
}

enum bfa_ioc_state
bfa_ioc_get_state(struct bfa_ioc_s *ioc)
{
        enum bfa_iocpf_state iocpf_st;
        enum bfa_ioc_state ioc_st = bfa_sm_to_state(ioc_sm_table, ioc->fsm);

        if (ioc_st == BFA_IOC_ENABLING ||
                ioc_st == BFA_IOC_FAIL || ioc_st == BFA_IOC_INITFAIL) {

                iocpf_st = bfa_sm_to_state(iocpf_sm_table, ioc->iocpf.fsm);

                switch (iocpf_st) {
                case BFA_IOCPF_SEMWAIT:
                        ioc_st = BFA_IOC_SEMWAIT;
                        break;

                case BFA_IOCPF_HWINIT:
                        ioc_st = BFA_IOC_HWINIT;
                        break;

                case BFA_IOCPF_FWMISMATCH:
                        ioc_st = BFA_IOC_FWMISMATCH;
                        break;

                case BFA_IOCPF_FAIL:
                        ioc_st = BFA_IOC_FAIL;
                        break;

                case BFA_IOCPF_INITFAIL:
                        ioc_st = BFA_IOC_INITFAIL;
                        break;

                default:
                        break;
                }
        }

        return ioc_st;
}

void
bfa_ioc_get_attr(struct bfa_ioc_s *ioc, struct bfa_ioc_attr_s *ioc_attr)
{
        memset((void *)ioc_attr, 0, sizeof(struct bfa_ioc_attr_s));

        ioc_attr->state = bfa_ioc_get_state(ioc);
        ioc_attr->port_id = ioc->port_id;
        ioc_attr->port_mode = ioc->port_mode;
        ioc_attr->port_mode_cfg = ioc->port_mode_cfg;
        ioc_attr->cap_bm = ioc->ad_cap_bm;

        ioc_attr->ioc_type = bfa_ioc_get_type(ioc);

        bfa_ioc_get_adapter_attr(ioc, &ioc_attr->adapter_attr);

        ioc_attr->pci_attr.device_id = ioc->pcidev.device_id;
        ioc_attr->pci_attr.pcifn = ioc->pcidev.pci_func;
        bfa_ioc_get_pci_chip_rev(ioc, ioc_attr->pci_attr.chip_rev);
}

mac_t
bfa_ioc_get_mac(struct bfa_ioc_s *ioc)
{
        /*
         * Check the IOC type and return the appropriate MAC
         */
        if (bfa_ioc_get_type(ioc) == BFA_IOC_TYPE_FCoE)
                return ioc->attr->fcoe_mac;
        else
                return ioc->attr->mac;
}

mac_t
bfa_ioc_get_mfg_mac(struct bfa_ioc_s *ioc)
{
        mac_t   m;

        m = ioc->attr->mfg_mac;
        if (bfa_mfg_is_old_wwn_mac_model(ioc->attr->card_type))
                m.mac[MAC_ADDRLEN - 1] += bfa_ioc_pcifn(ioc);
        else
                bfa_mfg_increment_wwn_mac(&(m.mac[MAC_ADDRLEN-3]),
                        bfa_ioc_pcifn(ioc));

        return m;
}

/*
 * Send AEN notification
 */
void
bfa_ioc_aen_post(struct bfa_ioc_s *ioc, enum bfa_ioc_aen_event event)
{
        struct bfad_s *bfad = (struct bfad_s *)ioc->bfa->bfad;
        struct bfa_aen_entry_s  *aen_entry;
        enum bfa_ioc_type_e ioc_type;

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

        ioc_type = bfa_ioc_get_type(ioc);
        switch (ioc_type) {
        case BFA_IOC_TYPE_FC:
                aen_entry->aen_data.ioc.pwwn = ioc->attr->pwwn;
                break;
        case BFA_IOC_TYPE_FCoE:
                aen_entry->aen_data.ioc.pwwn = ioc->attr->pwwn;
                aen_entry->aen_data.ioc.mac = bfa_ioc_get_mac(ioc);
                break;
        case BFA_IOC_TYPE_LL:
                aen_entry->aen_data.ioc.mac = bfa_ioc_get_mac(ioc);
                break;
        default:
                WARN_ON(ioc_type != BFA_IOC_TYPE_FC);
                break;
        }

        /* Send the AEN notification */
        aen_entry->aen_data.ioc.ioc_type = ioc_type;
        bfad_im_post_vendor_event(aen_entry, bfad, ++ioc->ioc_aen_seq,
                                  BFA_AEN_CAT_IOC, event);
}

/*
 * Retrieve saved firmware trace from a prior IOC failure.
 */
bfa_status_t
bfa_ioc_debug_fwsave(struct bfa_ioc_s *ioc, void *trcdata, int *trclen)
{
        int     tlen;

        if (ioc->dbg_fwsave_len == 0)
                return BFA_STATUS_ENOFSAVE;

        tlen = *trclen;
        if (tlen > ioc->dbg_fwsave_len)
                tlen = ioc->dbg_fwsave_len;

        memcpy(trcdata, ioc->dbg_fwsave, tlen);
        *trclen = tlen;
        return BFA_STATUS_OK;
}


/*
 * Retrieve saved firmware trace from a prior IOC failure.
 */
bfa_status_t
bfa_ioc_debug_fwtrc(struct bfa_ioc_s *ioc, void *trcdata, int *trclen)
{
        u32 loff = BFA_DBG_FWTRC_OFF(bfa_ioc_portid(ioc));
        int tlen;
        bfa_status_t status;

        bfa_trc(ioc, *trclen);

        tlen = *trclen;
        if (tlen > BFA_DBG_FWTRC_LEN)
                tlen = BFA_DBG_FWTRC_LEN;

        status = bfa_ioc_smem_read(ioc, trcdata, loff, tlen);
        *trclen = tlen;
        return status;
}

static void
bfa_ioc_send_fwsync(struct bfa_ioc_s *ioc)
{
        struct bfa_mbox_cmd_s cmd;
        struct bfi_ioc_ctrl_req_s *req = (struct bfi_ioc_ctrl_req_s *) cmd.msg;

        bfi_h2i_set(req->mh, BFI_MC_IOC, BFI_IOC_H2I_DBG_SYNC,
                    bfa_ioc_portid(ioc));
        req->clscode = cpu_to_be16(ioc->clscode);
        bfa_ioc_mbox_queue(ioc, &cmd);
}

static void
bfa_ioc_fwsync(struct bfa_ioc_s *ioc)
{
        u32 fwsync_iter = 1000;

        bfa_ioc_send_fwsync(ioc);

        /*
         * After sending a fw sync mbox command wait for it to
         * take effect.  We will not wait for a response because
         *    1. fw_sync mbox cmd doesn't have a response.
         *    2. Even if we implement that,  interrupts might not
         *       be enabled when we call this function.
         * So, just keep checking if any mbox cmd is pending, and
         * after waiting for a reasonable amount of time, go ahead.
         * It is possible that fw has crashed and the mbox command
         * is never acknowledged.
         */
        while (bfa_ioc_mbox_cmd_pending(ioc) && fwsync_iter > 0)
                fwsync_iter--;
}

/*
 * Dump firmware smem
 */
bfa_status_t
bfa_ioc_debug_fwcore(struct bfa_ioc_s *ioc, void *buf,
                                u32 *offset, int *buflen)
{
        u32 loff;
        int dlen;
        bfa_status_t status;
        u32 smem_len = BFA_IOC_FW_SMEM_SIZE(ioc);

        if (*offset >= smem_len) {
                *offset = *buflen = 0;
                return BFA_STATUS_EINVAL;
        }

        loff = *offset;
        dlen = *buflen;

        /*
         * First smem read, sync smem before proceeding
         * No need to sync before reading every chunk.
         */
        if (loff == 0)
                bfa_ioc_fwsync(ioc);

        if ((loff + dlen) >= smem_len)
                dlen = smem_len - loff;

        status = bfa_ioc_smem_read(ioc, buf, loff, dlen);

        if (status != BFA_STATUS_OK) {
                *offset = *buflen = 0;
                return status;
        }

        *offset += dlen;

        if (*offset >= smem_len)
                *offset = 0;

        *buflen = dlen;

        return status;
}

/*
 * Firmware statistics
 */
bfa_status_t
bfa_ioc_fw_stats_get(struct bfa_ioc_s *ioc, void *stats)
{
        u32 loff = BFI_IOC_FWSTATS_OFF + \
                BFI_IOC_FWSTATS_SZ * (bfa_ioc_portid(ioc));
        int tlen;
        bfa_status_t status;

        if (ioc->stats_busy) {
                bfa_trc(ioc, ioc->stats_busy);
                return BFA_STATUS_DEVBUSY;
        }
        ioc->stats_busy = BFA_TRUE;

        tlen = sizeof(struct bfa_fw_stats_s);
        status = bfa_ioc_smem_read(ioc, stats, loff, tlen);

        ioc->stats_busy = BFA_FALSE;
        return status;
}

bfa_status_t
bfa_ioc_fw_stats_clear(struct bfa_ioc_s *ioc)
{
        u32 loff = BFI_IOC_FWSTATS_OFF + \
                BFI_IOC_FWSTATS_SZ * (bfa_ioc_portid(ioc));
        int tlen;
        bfa_status_t status;

        if (ioc->stats_busy) {
                bfa_trc(ioc, ioc->stats_busy);
                return BFA_STATUS_DEVBUSY;
        }
        ioc->stats_busy = BFA_TRUE;

        tlen = sizeof(struct bfa_fw_stats_s);
        status = bfa_ioc_smem_clr(ioc, loff, tlen);

        ioc->stats_busy = BFA_FALSE;
        return status;
}

/*
 * Save firmware trace if configured.
 */
void
bfa_ioc_debug_save_ftrc(struct bfa_ioc_s *ioc)
{
        int             tlen;

        if (ioc->dbg_fwsave_once) {
                ioc->dbg_fwsave_once = BFA_FALSE;
                if (ioc->dbg_fwsave_len) {
                        tlen = ioc->dbg_fwsave_len;
                        bfa_ioc_debug_fwtrc(ioc, ioc->dbg_fwsave, &tlen);
                }
        }
}

/*
 * Firmware failure detected. Start recovery actions.
 */
static void
bfa_ioc_recover(struct bfa_ioc_s *ioc)
{
        bfa_ioc_stats(ioc, ioc_hbfails);
        ioc->stats.hb_count = ioc->hb_count;
        bfa_fsm_send_event(ioc, IOC_E_HBFAIL);
}

/*
 *  BFA IOC PF private functions
 */
static void
bfa_iocpf_timeout(void *ioc_arg)
{
        struct bfa_ioc_s  *ioc = (struct bfa_ioc_s *) ioc_arg;

        bfa_trc(ioc, 0);
        bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_TIMEOUT);
}

static void
bfa_iocpf_sem_timeout(void *ioc_arg)
{
        struct bfa_ioc_s  *ioc = (struct bfa_ioc_s *) ioc_arg;

        bfa_ioc_hw_sem_get(ioc);
}

static void
bfa_ioc_poll_fwinit(struct bfa_ioc_s *ioc)
{
        u32 fwstate = readl(ioc->ioc_regs.ioc_fwstate);

        bfa_trc(ioc, fwstate);

        if (fwstate == BFI_IOC_DISABLED) {
                bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_FWREADY);
                return;
        }

        if (ioc->iocpf.poll_time >= (3 * BFA_IOC_TOV))
                bfa_iocpf_timeout(ioc);
        else {
                ioc->iocpf.poll_time += BFA_IOC_POLL_TOV;
                bfa_iocpf_poll_timer_start(ioc);
        }
}

static void
bfa_iocpf_poll_timeout(void *ioc_arg)
{
        struct bfa_ioc_s *ioc = (struct bfa_ioc_s *) ioc_arg;

        bfa_ioc_poll_fwinit(ioc);
}

/*
 *  bfa timer function
 */
void
bfa_timer_beat(struct bfa_timer_mod_s *mod)
{
        struct list_head *qh = &mod->timer_q;
        struct list_head *qe, *qe_next;
        struct bfa_timer_s *elem;
        struct list_head timedout_q;

        INIT_LIST_HEAD(&timedout_q);

        qe = bfa_q_next(qh);

        while (qe != qh) {
                qe_next = bfa_q_next(qe);

                elem = (struct bfa_timer_s *) qe;
                if (elem->timeout <= BFA_TIMER_FREQ) {
                        elem->timeout = 0;
                        list_del(&elem->qe);
                        list_add_tail(&elem->qe, &timedout_q);
                } else {
                        elem->timeout -= BFA_TIMER_FREQ;
                }

                qe = qe_next;   /* go to next elem */
        }

        /*
         * Pop all the timeout entries
         */
        while (!list_empty(&timedout_q)) {
                bfa_q_deq(&timedout_q, &elem);
                elem->timercb(elem->arg);
        }
}

/*
 * Should be called with lock protection
 */
void
bfa_timer_begin(struct bfa_timer_mod_s *mod, struct bfa_timer_s *timer,
                    void (*timercb) (void *), void *arg, unsigned int timeout)
{

        WARN_ON(timercb == NULL);
        WARN_ON(bfa_q_is_on_q(&mod->timer_q, timer));

        timer->timeout = timeout;
        timer->timercb = timercb;
        timer->arg = arg;

        list_add_tail(&timer->qe, &mod->timer_q);
}

/*
 * Should be called with lock protection
 */
void
bfa_timer_stop(struct bfa_timer_s *timer)
{
        WARN_ON(list_empty(&timer->qe));

        list_del(&timer->qe);
}

/*
 *      ASIC block related
 */
static void
bfa_ablk_config_swap(struct bfa_ablk_cfg_s *cfg)
{
        struct bfa_ablk_cfg_inst_s *cfg_inst;
        int i, j;
        u16     be16;

        for (i = 0; i < BFA_ABLK_MAX; i++) {
                cfg_inst = &cfg->inst[i];
                for (j = 0; j < BFA_ABLK_MAX_PFS; j++) {
                        be16 = cfg_inst->pf_cfg[j].pers;
                        cfg_inst->pf_cfg[j].pers = be16_to_cpu(be16);
                        be16 = cfg_inst->pf_cfg[j].num_qpairs;
                        cfg_inst->pf_cfg[j].num_qpairs = be16_to_cpu(be16);
                        be16 = cfg_inst->pf_cfg[j].num_vectors;
                        cfg_inst->pf_cfg[j].num_vectors = be16_to_cpu(be16);
                        be16 = cfg_inst->pf_cfg[j].bw_min;
                        cfg_inst->pf_cfg[j].bw_min = be16_to_cpu(be16);
                        be16 = cfg_inst->pf_cfg[j].bw_max;
                        cfg_inst->pf_cfg[j].bw_max = be16_to_cpu(be16);
                }
        }
}

static void
bfa_ablk_isr(void *cbarg, struct bfi_mbmsg_s *msg)
{
        struct bfa_ablk_s *ablk = (struct bfa_ablk_s *)cbarg;
        struct bfi_ablk_i2h_rsp_s *rsp = (struct bfi_ablk_i2h_rsp_s *)msg;
        bfa_ablk_cbfn_t cbfn;

        WARN_ON(msg->mh.msg_class != BFI_MC_ABLK);
        bfa_trc(ablk->ioc, msg->mh.msg_id);

        switch (msg->mh.msg_id) {
        case BFI_ABLK_I2H_QUERY:
                if (rsp->status == BFA_STATUS_OK) {
                        memcpy(ablk->cfg, ablk->dma_addr.kva,
                                sizeof(struct bfa_ablk_cfg_s));
                        bfa_ablk_config_swap(ablk->cfg);
                        ablk->cfg = NULL;
                }
                break;

        case BFI_ABLK_I2H_ADPT_CONFIG:
        case BFI_ABLK_I2H_PORT_CONFIG:
                /* update config port mode */
                ablk->ioc->port_mode_cfg = rsp->port_mode;

        case BFI_ABLK_I2H_PF_DELETE:
        case BFI_ABLK_I2H_PF_UPDATE:
        case BFI_ABLK_I2H_OPTROM_ENABLE:
        case BFI_ABLK_I2H_OPTROM_DISABLE:
                /* No-op */
                break;

        case BFI_ABLK_I2H_PF_CREATE:
                *(ablk->pcifn) = rsp->pcifn;
                ablk->pcifn = NULL;
                break;

        default:
                WARN_ON(1);
        }

        ablk->busy = BFA_FALSE;
        if (ablk->cbfn) {
                cbfn = ablk->cbfn;
                ablk->cbfn = NULL;
                cbfn(ablk->cbarg, rsp->status);
        }
}

static void
bfa_ablk_notify(void *cbarg, enum bfa_ioc_event_e event)
{
        struct bfa_ablk_s *ablk = (struct bfa_ablk_s *)cbarg;

        bfa_trc(ablk->ioc, event);

        switch (event) {
        case BFA_IOC_E_ENABLED:
                WARN_ON(ablk->busy != BFA_FALSE);
                break;

        case BFA_IOC_E_DISABLED:
        case BFA_IOC_E_FAILED:
                /* Fail any pending requests */
                ablk->pcifn = NULL;
                if (ablk->busy) {
                        if (ablk->cbfn)
                                ablk->cbfn(ablk->cbarg, BFA_STATUS_FAILED);
                        ablk->cbfn = NULL;
                        ablk->busy = BFA_FALSE;
                }
                break;

        default:
                WARN_ON(1);
                break;
        }
}

u32
bfa_ablk_meminfo(void)
{
        return BFA_ROUNDUP(sizeof(struct bfa_ablk_cfg_s), BFA_DMA_ALIGN_SZ);
}

void
bfa_ablk_memclaim(struct bfa_ablk_s *ablk, u8 *dma_kva, u64 dma_pa)
{
        ablk->dma_addr.kva = dma_kva;
        ablk->dma_addr.pa  = dma_pa;
}

void
bfa_ablk_attach(struct bfa_ablk_s *ablk, struct bfa_ioc_s *ioc)
{
        ablk->ioc = ioc;

        bfa_ioc_mbox_regisr(ablk->ioc, BFI_MC_ABLK, bfa_ablk_isr, ablk);
        bfa_q_qe_init(&ablk->ioc_notify);
        bfa_ioc_notify_init(&ablk->ioc_notify, bfa_ablk_notify, ablk);
        list_add_tail(&ablk->ioc_notify.qe, &ablk->ioc->notify_q);
}

bfa_status_t
bfa_ablk_query(struct bfa_ablk_s *ablk, struct bfa_ablk_cfg_s *ablk_cfg,
                bfa_ablk_cbfn_t cbfn, void *cbarg)
{
        struct bfi_ablk_h2i_query_s *m;

        WARN_ON(!ablk_cfg);

        if (!bfa_ioc_is_operational(ablk->ioc)) {
                bfa_trc(ablk->ioc, BFA_STATUS_IOC_FAILURE);
                return BFA_STATUS_IOC_FAILURE;
        }

        if (ablk->busy) {
                bfa_trc(ablk->ioc, BFA_STATUS_DEVBUSY);
                return  BFA_STATUS_DEVBUSY;
        }

        ablk->cfg = ablk_cfg;
        ablk->cbfn  = cbfn;
        ablk->cbarg = cbarg;
        ablk->busy  = BFA_TRUE;

        m = (struct bfi_ablk_h2i_query_s *)ablk->mb.msg;
        bfi_h2i_set(m->mh, BFI_MC_ABLK, BFI_ABLK_H2I_QUERY,
                    bfa_ioc_portid(ablk->ioc));
        bfa_dma_be_addr_set(m->addr, ablk->dma_addr.pa);
        bfa_ioc_mbox_queue(ablk->ioc, &ablk->mb);

        return BFA_STATUS_OK;
}

bfa_status_t
bfa_ablk_pf_create(struct bfa_ablk_s *ablk, u16 *pcifn,
                u8 port, enum bfi_pcifn_class personality,
                u16 bw_min, u16 bw_max,
                bfa_ablk_cbfn_t cbfn, void *cbarg)
{
        struct bfi_ablk_h2i_pf_req_s *m;

        if (!bfa_ioc_is_operational(ablk->ioc)) {
                bfa_trc(ablk->ioc, BFA_STATUS_IOC_FAILURE);
                return BFA_STATUS_IOC_FAILURE;
        }

        if (ablk->busy) {
                bfa_trc(ablk->ioc, BFA_STATUS_DEVBUSY);
                return  BFA_STATUS_DEVBUSY;
        }

        ablk->pcifn = pcifn;
        ablk->cbfn = cbfn;
        ablk->cbarg = cbarg;
        ablk->busy  = BFA_TRUE;

        m = (struct bfi_ablk_h2i_pf_req_s *)ablk->mb.msg;
        bfi_h2i_set(m->mh, BFI_MC_ABLK, BFI_ABLK_H2I_PF_CREATE,
                    bfa_ioc_portid(ablk->ioc));
        m->pers = cpu_to_be16((u16)personality);
        m->bw_min = cpu_to_be16(bw_min);
        m->bw_max = cpu_to_be16(bw_max);
        m->port = port;
        bfa_ioc_mbox_queue(ablk->ioc, &ablk->mb);

        return BFA_STATUS_OK;
}

bfa_status_t
bfa_ablk_pf_delete(struct bfa_ablk_s *ablk, int pcifn,
                bfa_ablk_cbfn_t cbfn, void *cbarg)
{
        struct bfi_ablk_h2i_pf_req_s *m;

        if (!bfa_ioc_is_operational(ablk->ioc)) {
                bfa_trc(ablk->ioc, BFA_STATUS_IOC_FAILURE);
                return BFA_STATUS_IOC_FAILURE;
        }

        if (ablk->busy) {
                bfa_trc(ablk->ioc, BFA_STATUS_DEVBUSY);
                return  BFA_STATUS_DEVBUSY;
        }

        ablk->cbfn  = cbfn;
        ablk->cbarg = cbarg;
        ablk->busy  = BFA_TRUE;

        m = (struct bfi_ablk_h2i_pf_req_s *)ablk->mb.msg;
        bfi_h2i_set(m->mh, BFI_MC_ABLK, BFI_ABLK_H2I_PF_DELETE,
                    bfa_ioc_portid(ablk->ioc));
        m->pcifn = (u8)pcifn;
        bfa_ioc_mbox_queue(ablk->ioc, &ablk->mb);

        return BFA_STATUS_OK;
}

bfa_status_t
bfa_ablk_adapter_config(struct bfa_ablk_s *ablk, enum bfa_mode_s mode,
                int max_pf, int max_vf, bfa_ablk_cbfn_t cbfn, void *cbarg)
{
        struct bfi_ablk_h2i_cfg_req_s *m;

        if (!bfa_ioc_is_operational(ablk->ioc)) {
                bfa_trc(ablk->ioc, BFA_STATUS_IOC_FAILURE);
                return BFA_STATUS_IOC_FAILURE;
        }

        if (ablk->busy) {
                bfa_trc(ablk->ioc, BFA_STATUS_DEVBUSY);
                return  BFA_STATUS_DEVBUSY;
        }

        ablk->cbfn  = cbfn;
        ablk->cbarg = cbarg;
        ablk->busy  = BFA_TRUE;

        m = (struct bfi_ablk_h2i_cfg_req_s *)ablk->mb.msg;
        bfi_h2i_set(m->mh, BFI_MC_ABLK, BFI_ABLK_H2I_ADPT_CONFIG,
                    bfa_ioc_portid(ablk->ioc));
        m->mode = (u8)mode;
        m->max_pf = (u8)max_pf;
        m->max_vf = (u8)max_vf;
        bfa_ioc_mbox_queue(ablk->ioc, &ablk->mb);

        return BFA_STATUS_OK;
}

bfa_status_t
bfa_ablk_port_config(struct bfa_ablk_s *ablk, int port, enum bfa_mode_s mode,
                int max_pf, int max_vf, bfa_ablk_cbfn_t cbfn, void *cbarg)
{
        struct bfi_ablk_h2i_cfg_req_s *m;

        if (!bfa_ioc_is_operational(ablk->ioc)) {
                bfa_trc(ablk->ioc, BFA_STATUS_IOC_FAILURE);
                return BFA_STATUS_IOC_FAILURE;
        }

        if (ablk->busy) {
                bfa_trc(ablk->ioc, BFA_STATUS_DEVBUSY);
                return  BFA_STATUS_DEVBUSY;
        }

        ablk->cbfn  = cbfn;
        ablk->cbarg = cbarg;
        ablk->busy  = BFA_TRUE;

        m = (struct bfi_ablk_h2i_cfg_req_s *)ablk->mb.msg;
        bfi_h2i_set(m->mh, BFI_MC_ABLK, BFI_ABLK_H2I_PORT_CONFIG,
                bfa_ioc_portid(ablk->ioc));
        m->port = (u8)port;
        m->mode = (u8)mode;
        m->max_pf = (u8)max_pf;
        m->max_vf = (u8)max_vf;
        bfa_ioc_mbox_queue(ablk->ioc, &ablk->mb);

        return BFA_STATUS_OK;
}

bfa_status_t
bfa_ablk_pf_update(struct bfa_ablk_s *ablk, int pcifn, u16 bw_min,
                   u16 bw_max, bfa_ablk_cbfn_t cbfn, void *cbarg)
{
        struct bfi_ablk_h2i_pf_req_s *m;

        if (!bfa_ioc_is_operational(ablk->ioc)) {
                bfa_trc(ablk->ioc, BFA_STATUS_IOC_FAILURE);
                return BFA_STATUS_IOC_FAILURE;
        }

        if (ablk->busy) {
                bfa_trc(ablk->ioc, BFA_STATUS_DEVBUSY);
                return  BFA_STATUS_DEVBUSY;
        }

        ablk->cbfn  = cbfn;
        ablk->cbarg = cbarg;
        ablk->busy  = BFA_TRUE;

        m = (struct bfi_ablk_h2i_pf_req_s *)ablk->mb.msg;
        bfi_h2i_set(m->mh, BFI_MC_ABLK, BFI_ABLK_H2I_PF_UPDATE,
                bfa_ioc_portid(ablk->ioc));
        m->pcifn = (u8)pcifn;
        m->bw_min = cpu_to_be16(bw_min);
        m->bw_max = cpu_to_be16(bw_max);
        bfa_ioc_mbox_queue(ablk->ioc, &ablk->mb);

        return BFA_STATUS_OK;
}

bfa_status_t
bfa_ablk_optrom_en(struct bfa_ablk_s *ablk, bfa_ablk_cbfn_t cbfn, void *cbarg)
{
        struct bfi_ablk_h2i_optrom_s *m;

        if (!bfa_ioc_is_operational(ablk->ioc)) {
                bfa_trc(ablk->ioc, BFA_STATUS_IOC_FAILURE);
                return BFA_STATUS_IOC_FAILURE;
        }

        if (ablk->busy) {
                bfa_trc(ablk->ioc, BFA_STATUS_DEVBUSY);
                return  BFA_STATUS_DEVBUSY;
        }

        ablk->cbfn  = cbfn;
        ablk->cbarg = cbarg;
        ablk->busy  = BFA_TRUE;

        m = (struct bfi_ablk_h2i_optrom_s *)ablk->mb.msg;
        bfi_h2i_set(m->mh, BFI_MC_ABLK, BFI_ABLK_H2I_OPTROM_ENABLE,
                bfa_ioc_portid(ablk->ioc));
        bfa_ioc_mbox_queue(ablk->ioc, &ablk->mb);

        return BFA_STATUS_OK;
}

bfa_status_t
bfa_ablk_optrom_dis(struct bfa_ablk_s *ablk, bfa_ablk_cbfn_t cbfn, void *cbarg)
{
        struct bfi_ablk_h2i_optrom_s *m;

        if (!bfa_ioc_is_operational(ablk->ioc)) {
                bfa_trc(ablk->ioc, BFA_STATUS_IOC_FAILURE);
                return BFA_STATUS_IOC_FAILURE;
        }

        if (ablk->busy) {
                bfa_trc(ablk->ioc, BFA_STATUS_DEVBUSY);
                return  BFA_STATUS_DEVBUSY;
        }

        ablk->cbfn  = cbfn;
        ablk->cbarg = cbarg;
        ablk->busy  = BFA_TRUE;

        m = (struct bfi_ablk_h2i_optrom_s *)ablk->mb.msg;
        bfi_h2i_set(m->mh, BFI_MC_ABLK, BFI_ABLK_H2I_OPTROM_DISABLE,
                bfa_ioc_portid(ablk->ioc));
        bfa_ioc_mbox_queue(ablk->ioc, &ablk->mb);

        return BFA_STATUS_OK;
}

/*
 *      SFP module specific
 */

/* forward declarations */
static void bfa_sfp_getdata_send(struct bfa_sfp_s *sfp);
static void bfa_sfp_media_get(struct bfa_sfp_s *sfp);
static bfa_status_t bfa_sfp_speed_valid(struct bfa_sfp_s *sfp,
                                enum bfa_port_speed portspeed);

static void
bfa_cb_sfp_show(struct bfa_sfp_s *sfp)
{
        bfa_trc(sfp, sfp->lock);
        if (sfp->cbfn)
                sfp->cbfn(sfp->cbarg, sfp->status);
        sfp->lock = 0;
        sfp->cbfn = NULL;
}

static void
bfa_cb_sfp_state_query(struct bfa_sfp_s *sfp)
{
        bfa_trc(sfp, sfp->portspeed);
        if (sfp->media) {
                bfa_sfp_media_get(sfp);
                if (sfp->state_query_cbfn)
                        sfp->state_query_cbfn(sfp->state_query_cbarg,
                                        sfp->status);
                        sfp->media = NULL;
                }

                if (sfp->portspeed) {
                        sfp->status = bfa_sfp_speed_valid(sfp, sfp->portspeed);
                        if (sfp->state_query_cbfn)
                                sfp->state_query_cbfn(sfp->state_query_cbarg,
                                                sfp->status);
                                sfp->portspeed = BFA_PORT_SPEED_UNKNOWN;
                }

                sfp->state_query_lock = 0;
                sfp->state_query_cbfn = NULL;
}

/*
 *      IOC event handler.
 */
static void
bfa_sfp_notify(void *sfp_arg, enum bfa_ioc_event_e event)
{
        struct bfa_sfp_s *sfp = sfp_arg;

        bfa_trc(sfp, event);
        bfa_trc(sfp, sfp->lock);
        bfa_trc(sfp, sfp->state_query_lock);

        switch (event) {
        case BFA_IOC_E_DISABLED:
        case BFA_IOC_E_FAILED:
                if (sfp->lock) {
                        sfp->status = BFA_STATUS_IOC_FAILURE;
                        bfa_cb_sfp_show(sfp);
                }

                if (sfp->state_query_lock) {
                        sfp->status = BFA_STATUS_IOC_FAILURE;
                        bfa_cb_sfp_state_query(sfp);
                }
                break;

        default:
                break;
        }
}

/*
 * SFP's State Change Notification post to AEN
 */
static void
bfa_sfp_scn_aen_post(struct bfa_sfp_s *sfp, struct bfi_sfp_scn_s *rsp)
{
        struct bfad_s *bfad = (struct bfad_s *)sfp->ioc->bfa->bfad;
        struct bfa_aen_entry_s  *aen_entry;
        enum bfa_port_aen_event aen_evt = 0;

        bfa_trc(sfp, (((u64)rsp->pomlvl) << 16) | (((u64)rsp->sfpid) << 8) |
                      ((u64)rsp->event));

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

        aen_entry->aen_data.port.ioc_type = bfa_ioc_get_type(sfp->ioc);
        aen_entry->aen_data.port.pwwn = sfp->ioc->attr->pwwn;
        aen_entry->aen_data.port.mac = bfa_ioc_get_mac(sfp->ioc);

        switch (rsp->event) {
        case BFA_SFP_SCN_INSERTED:
                aen_evt = BFA_PORT_AEN_SFP_INSERT;
                break;
        case BFA_SFP_SCN_REMOVED:
                aen_evt = BFA_PORT_AEN_SFP_REMOVE;
                break;
        case BFA_SFP_SCN_FAILED:
                aen_evt = BFA_PORT_AEN_SFP_ACCESS_ERROR;
                break;
        case BFA_SFP_SCN_UNSUPPORT:
                aen_evt = BFA_PORT_AEN_SFP_UNSUPPORT;
                break;
        case BFA_SFP_SCN_POM:
                aen_evt = BFA_PORT_AEN_SFP_POM;
                aen_entry->aen_data.port.level = rsp->pomlvl;
                break;
        default:
                bfa_trc(sfp, rsp->event);
                WARN_ON(1);
        }

        /* Send the AEN notification */
        bfad_im_post_vendor_event(aen_entry, bfad, ++sfp->ioc->ioc_aen_seq,
                                  BFA_AEN_CAT_PORT, aen_evt);
}

/*
 *      SFP get data send
 */
static void
bfa_sfp_getdata_send(struct bfa_sfp_s *sfp)
{
        struct bfi_sfp_req_s *req = (struct bfi_sfp_req_s *)sfp->mbcmd.msg;

        bfa_trc(sfp, req->memtype);

        /* build host command */
        bfi_h2i_set(req->mh, BFI_MC_SFP, BFI_SFP_H2I_SHOW,
                        bfa_ioc_portid(sfp->ioc));

        /* send mbox cmd */
        bfa_ioc_mbox_queue(sfp->ioc, &sfp->mbcmd);
}

/*
 *      SFP is valid, read sfp data
 */
static void
bfa_sfp_getdata(struct bfa_sfp_s *sfp, enum bfi_sfp_mem_e memtype)
{
        struct bfi_sfp_req_s *req = (struct bfi_sfp_req_s *)sfp->mbcmd.msg;

        WARN_ON(sfp->lock != 0);
        bfa_trc(sfp, sfp->state);

        sfp->lock = 1;
        sfp->memtype = memtype;
        req->memtype = memtype;

        /* Setup SG list */
        bfa_alen_set(&req->alen, sizeof(struct sfp_mem_s), sfp->dbuf_pa);

        bfa_sfp_getdata_send(sfp);
}

/*
 *      SFP scn handler
 */
static void
bfa_sfp_scn(struct bfa_sfp_s *sfp, struct bfi_mbmsg_s *msg)
{
        struct bfi_sfp_scn_s *rsp = (struct bfi_sfp_scn_s *) msg;

        switch (rsp->event) {
        case BFA_SFP_SCN_INSERTED:
                sfp->state = BFA_SFP_STATE_INSERTED;
                sfp->data_valid = 0;
                bfa_sfp_scn_aen_post(sfp, rsp);
                break;
        case BFA_SFP_SCN_REMOVED:
                sfp->state = BFA_SFP_STATE_REMOVED;
                sfp->data_valid = 0;
                bfa_sfp_scn_aen_post(sfp, rsp);
                 break;
        case BFA_SFP_SCN_FAILED:
                sfp->state = BFA_SFP_STATE_FAILED;
                sfp->data_valid = 0;
                bfa_sfp_scn_aen_post(sfp, rsp);
                break;
        case BFA_SFP_SCN_UNSUPPORT:
                sfp->state = BFA_SFP_STATE_UNSUPPORT;
                bfa_sfp_scn_aen_post(sfp, rsp);
                if (!sfp->lock)
                        bfa_sfp_getdata(sfp, BFI_SFP_MEM_ALL);
                break;
        case BFA_SFP_SCN_POM:
                bfa_sfp_scn_aen_post(sfp, rsp);
                break;
        case BFA_SFP_SCN_VALID:
                sfp->state = BFA_SFP_STATE_VALID;
                if (!sfp->lock)
                        bfa_sfp_getdata(sfp, BFI_SFP_MEM_ALL);
                break;
        default:
                bfa_trc(sfp, rsp->event);
                WARN_ON(1);
        }
}

/*
 * SFP show complete
 */
static void
bfa_sfp_show_comp(struct bfa_sfp_s *sfp, struct bfi_mbmsg_s *msg)
{
        struct bfi_sfp_rsp_s *rsp = (struct bfi_sfp_rsp_s *) msg;

        if (!sfp->lock) {
                /*
                 * receiving response after ioc failure
                 */
                bfa_trc(sfp, sfp->lock);
                return;
        }

        bfa_trc(sfp, rsp->status);
        if (rsp->status == BFA_STATUS_OK) {
                sfp->data_valid = 1;
                if (sfp->state == BFA_SFP_STATE_VALID)
                        sfp->status = BFA_STATUS_OK;
                else if (sfp->state == BFA_SFP_STATE_UNSUPPORT)
                        sfp->status = BFA_STATUS_SFP_UNSUPP;
                else
                        bfa_trc(sfp, sfp->state);
        } else {
                sfp->data_valid = 0;
                sfp->status = rsp->status;
                /* sfpshow shouldn't change sfp state */
        }

        bfa_trc(sfp, sfp->memtype);
        if (sfp->memtype == BFI_SFP_MEM_DIAGEXT) {
                bfa_trc(sfp, sfp->data_valid);
                if (sfp->data_valid) {
                        u32     size = sizeof(struct sfp_mem_s);
                        u8 *des = (u8 *) &(sfp->sfpmem->srlid_base);
                        memcpy(des, sfp->dbuf_kva, size);
                }
                /*
                 * Queue completion callback.
                 */
                bfa_cb_sfp_show(sfp);
        } else
                sfp->lock = 0;

        bfa_trc(sfp, sfp->state_query_lock);
        if (sfp->state_query_lock) {
                sfp->state = rsp->state;
                /* Complete callback */
                bfa_cb_sfp_state_query(sfp);
        }
}

/*
 *      SFP query fw sfp state
 */
static void
bfa_sfp_state_query(struct bfa_sfp_s *sfp)
{
        struct bfi_sfp_req_s *req = (struct bfi_sfp_req_s *)sfp->mbcmd.msg;

        /* Should not be doing query if not in _INIT state */
        WARN_ON(sfp->state != BFA_SFP_STATE_INIT);
        WARN_ON(sfp->state_query_lock != 0);
        bfa_trc(sfp, sfp->state);

        sfp->state_query_lock = 1;
        req->memtype = 0;

        if (!sfp->lock)
                bfa_sfp_getdata(sfp, BFI_SFP_MEM_ALL);
}

static void
bfa_sfp_media_get(struct bfa_sfp_s *sfp)
{
        enum bfa_defs_sfp_media_e *media = sfp->media;

        *media = BFA_SFP_MEDIA_UNKNOWN;

        if (sfp->state == BFA_SFP_STATE_UNSUPPORT)
                *media = BFA_SFP_MEDIA_UNSUPPORT;
        else if (sfp->state == BFA_SFP_STATE_VALID) {
                union sfp_xcvr_e10g_code_u e10g;
                struct sfp_mem_s *sfpmem = (struct sfp_mem_s *)sfp->dbuf_kva;
                u16 xmtr_tech = (sfpmem->srlid_base.xcvr[4] & 0x3) << 7 |
                                (sfpmem->srlid_base.xcvr[5] >> 1);

                e10g.b = sfpmem->srlid_base.xcvr[0];
                bfa_trc(sfp, e10g.b);
                bfa_trc(sfp, xmtr_tech);
                /* check fc transmitter tech */
                if ((xmtr_tech & SFP_XMTR_TECH_CU) ||
                    (xmtr_tech & SFP_XMTR_TECH_CP) ||
                    (xmtr_tech & SFP_XMTR_TECH_CA))
                        *media = BFA_SFP_MEDIA_CU;
                else if ((xmtr_tech & SFP_XMTR_TECH_EL_INTRA) ||
                         (xmtr_tech & SFP_XMTR_TECH_EL_INTER))
                        *media = BFA_SFP_MEDIA_EL;
                else if ((xmtr_tech & SFP_XMTR_TECH_LL) ||
                         (xmtr_tech & SFP_XMTR_TECH_LC))
                        *media = BFA_SFP_MEDIA_LW;
                else if ((xmtr_tech & SFP_XMTR_TECH_SL) ||
                         (xmtr_tech & SFP_XMTR_TECH_SN) ||
                         (xmtr_tech & SFP_XMTR_TECH_SA))
                        *media = BFA_SFP_MEDIA_SW;
                /* Check 10G Ethernet Compilance code */
                else if (e10g.r.e10g_sr)
                        *media = BFA_SFP_MEDIA_SW;
                else if (e10g.r.e10g_lrm && e10g.r.e10g_lr)
                        *media = BFA_SFP_MEDIA_LW;
                else if (e10g.r.e10g_unall)
                        *media = BFA_SFP_MEDIA_UNKNOWN;
                else
                        bfa_trc(sfp, 0);
        } else
                bfa_trc(sfp, sfp->state);
}

static bfa_status_t
bfa_sfp_speed_valid(struct bfa_sfp_s *sfp, enum bfa_port_speed portspeed)
{
        struct sfp_mem_s *sfpmem = (struct sfp_mem_s *)sfp->dbuf_kva;
        struct sfp_xcvr_s *xcvr = (struct sfp_xcvr_s *) sfpmem->srlid_base.xcvr;
        union sfp_xcvr_fc3_code_u fc3 = xcvr->fc3;
        union sfp_xcvr_e10g_code_u e10g = xcvr->e10g;

        if (portspeed == BFA_PORT_SPEED_10GBPS) {
                if (e10g.r.e10g_sr || e10g.r.e10g_lr)
                        return BFA_STATUS_OK;
                else {
                        bfa_trc(sfp, e10g.b);
                        return BFA_STATUS_UNSUPP_SPEED;
                }
        }
        if (((portspeed & BFA_PORT_SPEED_16GBPS) && fc3.r.mb1600) ||
            ((portspeed & BFA_PORT_SPEED_8GBPS) && fc3.r.mb800) ||
            ((portspeed & BFA_PORT_SPEED_4GBPS) && fc3.r.mb400) ||
            ((portspeed & BFA_PORT_SPEED_2GBPS) && fc3.r.mb200) ||
            ((portspeed & BFA_PORT_SPEED_1GBPS) && fc3.r.mb100))
                return BFA_STATUS_OK;
        else {
                bfa_trc(sfp, portspeed);
                bfa_trc(sfp, fc3.b);
                bfa_trc(sfp, e10g.b);
                return BFA_STATUS_UNSUPP_SPEED;
        }
}

/*
 *      SFP hmbox handler
 */
void
bfa_sfp_intr(void *sfparg, struct bfi_mbmsg_s *msg)
{
        struct bfa_sfp_s *sfp = sfparg;

        switch (msg->mh.msg_id) {
        case BFI_SFP_I2H_SHOW:
                bfa_sfp_show_comp(sfp, msg);
                break;

        case BFI_SFP_I2H_SCN:
                bfa_sfp_scn(sfp, msg);
                break;

        default:
                bfa_trc(sfp, msg->mh.msg_id);
                WARN_ON(1);
        }
}

/*
 *      Return DMA memory needed by sfp module.
 */
u32
bfa_sfp_meminfo(void)
{
        return BFA_ROUNDUP(sizeof(struct sfp_mem_s), BFA_DMA_ALIGN_SZ);
}

/*
 *      Attach virtual and physical memory for SFP.
 */
void
bfa_sfp_attach(struct bfa_sfp_s *sfp, struct bfa_ioc_s *ioc, void *dev,
                struct bfa_trc_mod_s *trcmod)
{
        sfp->dev = dev;
        sfp->ioc = ioc;
        sfp->trcmod = trcmod;

        sfp->cbfn = NULL;
        sfp->cbarg = NULL;
        sfp->sfpmem = NULL;
        sfp->lock = 0;
        sfp->data_valid = 0;
        sfp->state = BFA_SFP_STATE_INIT;
        sfp->state_query_lock = 0;
        sfp->state_query_cbfn = NULL;
        sfp->state_query_cbarg = NULL;
        sfp->media = NULL;
        sfp->portspeed = BFA_PORT_SPEED_UNKNOWN;
        sfp->is_elb = BFA_FALSE;

        bfa_ioc_mbox_regisr(sfp->ioc, BFI_MC_SFP, bfa_sfp_intr, sfp);
        bfa_q_qe_init(&sfp->ioc_notify);
        bfa_ioc_notify_init(&sfp->ioc_notify, bfa_sfp_notify, sfp);
        list_add_tail(&sfp->ioc_notify.qe, &sfp->ioc->notify_q);
}

/*
 *      Claim Memory for SFP
 */
void
bfa_sfp_memclaim(struct bfa_sfp_s *sfp, u8 *dm_kva, u64 dm_pa)
{
        sfp->dbuf_kva   = dm_kva;
        sfp->dbuf_pa    = dm_pa;
        memset(sfp->dbuf_kva, 0, sizeof(struct sfp_mem_s));

        dm_kva += BFA_ROUNDUP(sizeof(struct sfp_mem_s), BFA_DMA_ALIGN_SZ);
        dm_pa += BFA_ROUNDUP(sizeof(struct sfp_mem_s), BFA_DMA_ALIGN_SZ);
}

/*
 * Show SFP eeprom content
 *
 * @param[in] sfp   - bfa sfp module
 *
 * @param[out] sfpmem - sfp eeprom data
 *
 */
bfa_status_t
bfa_sfp_show(struct bfa_sfp_s *sfp, struct sfp_mem_s *sfpmem,
                bfa_cb_sfp_t cbfn, void *cbarg)
{

        if (!bfa_ioc_is_operational(sfp->ioc)) {
                bfa_trc(sfp, 0);
                return BFA_STATUS_IOC_NON_OP;
        }

        if (sfp->lock) {
                bfa_trc(sfp, 0);
                return BFA_STATUS_DEVBUSY;
        }

        sfp->cbfn = cbfn;
        sfp->cbarg = cbarg;
        sfp->sfpmem = sfpmem;

        bfa_sfp_getdata(sfp, BFI_SFP_MEM_DIAGEXT);
        return BFA_STATUS_OK;
}

/*
 * Return SFP Media type
 *
 * @param[in] sfp   - bfa sfp module
 *
 * @param[out] media - port speed from user
 *
 */
bfa_status_t
bfa_sfp_media(struct bfa_sfp_s *sfp, enum bfa_defs_sfp_media_e *media,
                bfa_cb_sfp_t cbfn, void *cbarg)
{
        if (!bfa_ioc_is_operational(sfp->ioc)) {
                bfa_trc(sfp, 0);
                return BFA_STATUS_IOC_NON_OP;
        }

        sfp->media = media;
        if (sfp->state == BFA_SFP_STATE_INIT) {
                if (sfp->state_query_lock) {
                        bfa_trc(sfp, 0);
                        return BFA_STATUS_DEVBUSY;
                } else {
                        sfp->state_query_cbfn = cbfn;
                        sfp->state_query_cbarg = cbarg;
                        bfa_sfp_state_query(sfp);
                        return BFA_STATUS_SFP_NOT_READY;
                }
        }

        bfa_sfp_media_get(sfp);
        return BFA_STATUS_OK;
}

/*
 * Check if user set port speed is allowed by the SFP
 *
 * @param[in] sfp   - bfa sfp module
 * @param[in] portspeed - port speed from user
 *
 */
bfa_status_t
bfa_sfp_speed(struct bfa_sfp_s *sfp, enum bfa_port_speed portspeed,
                bfa_cb_sfp_t cbfn, void *cbarg)
{
        WARN_ON(portspeed == BFA_PORT_SPEED_UNKNOWN);

        if (!bfa_ioc_is_operational(sfp->ioc))
                return BFA_STATUS_IOC_NON_OP;

        /* For Mezz card, all speed is allowed */
        if (bfa_mfg_is_mezz(sfp->ioc->attr->card_type))
                return BFA_STATUS_OK;

        /* Check SFP state */
        sfp->portspeed = portspeed;
        if (sfp->state == BFA_SFP_STATE_INIT) {
                if (sfp->state_query_lock) {
                        bfa_trc(sfp, 0);
                        return BFA_STATUS_DEVBUSY;
                } else {
                        sfp->state_query_cbfn = cbfn;
                        sfp->state_query_cbarg = cbarg;
                        bfa_sfp_state_query(sfp);
                        return BFA_STATUS_SFP_NOT_READY;
                }
        }

        if (sfp->state == BFA_SFP_STATE_REMOVED ||
            sfp->state == BFA_SFP_STATE_FAILED) {
                bfa_trc(sfp, sfp->state);
                return BFA_STATUS_NO_SFP_DEV;
        }

        if (sfp->state == BFA_SFP_STATE_INSERTED) {
                bfa_trc(sfp, sfp->state);
                return BFA_STATUS_DEVBUSY;  /* sfp is reading data */
        }

        /* For eloopback, all speed is allowed */
        if (sfp->is_elb)
                return BFA_STATUS_OK;

        return bfa_sfp_speed_valid(sfp, portspeed);
}

/*
 *      Flash module specific
 */

/*
 * FLASH DMA buffer should be big enough to hold both MFG block and
 * asic block(64k) at the same time and also should be 2k aligned to
 * avoid write segement to cross sector boundary.
 */
#define BFA_FLASH_SEG_SZ        2048
#define BFA_FLASH_DMA_BUF_SZ    \
        BFA_ROUNDUP(0x010000 + sizeof(struct bfa_mfg_block_s), BFA_FLASH_SEG_SZ)

static void
bfa_flash_aen_audit_post(struct bfa_ioc_s *ioc, enum bfa_audit_aen_event event,
                        int inst, int type)
{
        struct bfad_s *bfad = (struct bfad_s *)ioc->bfa->bfad;
        struct bfa_aen_entry_s  *aen_entry;

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

        aen_entry->aen_data.audit.pwwn = ioc->attr->pwwn;
        aen_entry->aen_data.audit.partition_inst = inst;
        aen_entry->aen_data.audit.partition_type = type;

        /* Send the AEN notification */
        bfad_im_post_vendor_event(aen_entry, bfad, ++ioc->ioc_aen_seq,
                                  BFA_AEN_CAT_AUDIT, event);
}

static void
bfa_flash_cb(struct bfa_flash_s *flash)
{
        flash->op_busy = 0;
        if (flash->cbfn)
                flash->cbfn(flash->cbarg, flash->status);
}

static void
bfa_flash_notify(void *cbarg, enum bfa_ioc_event_e event)
{
        struct bfa_flash_s      *flash = cbarg;

        bfa_trc(flash, event);
        switch (event) {
        case BFA_IOC_E_DISABLED:
        case BFA_IOC_E_FAILED:
                if (flash->op_busy) {
                        flash->status = BFA_STATUS_IOC_FAILURE;
                        flash->cbfn(flash->cbarg, flash->status);
                        flash->op_busy = 0;
                }
                break;

        default:
                break;
        }
}

/*
 * Send flash attribute query request.
 *