/*
 * Linux network driver for QLogic BR-series Converged Network 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.
 */
/*
 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
 * Copyright (c) 2014-2015 QLogic Corporation
 * All rights reserved
 * www.qlogic.com
 */

#include "bfa_ioc.h"
#include "bfi_reg.h"
#include "bfa_defs.h"

/* IOC local definitions */

/* 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_set_cur_ioc_fwstate(__ioc, __fwstate)           \
                        ((__ioc)->ioc_hwif->ioc_set_fwstate(__ioc, __fwstate))
#define bfa_ioc_get_cur_ioc_fwstate(__ioc)              \
                        ((__ioc)->ioc_hwif->ioc_get_fwstate(__ioc))
#define bfa_ioc_set_alt_ioc_fwstate(__ioc, __fwstate)           \
                ((__ioc)->ioc_hwif->ioc_set_alt_fwstate(__ioc, __fwstate))

static bool bfa_nw_auto_recover = true;

/*
 * forward declarations
 */
static void bfa_ioc_hw_sem_init(struct bfa_ioc *ioc);
static void bfa_ioc_hw_sem_get(struct bfa_ioc *ioc);
static void bfa_ioc_hw_sem_get_cancel(struct bfa_ioc *ioc);
static void bfa_ioc_hwinit(struct bfa_ioc *ioc, bool force);
static void bfa_ioc_poll_fwinit(struct bfa_ioc *ioc);
static void bfa_ioc_send_enable(struct bfa_ioc *ioc);
static void bfa_ioc_send_disable(struct bfa_ioc *ioc);
static void bfa_ioc_send_getattr(struct bfa_ioc *ioc);
static void bfa_ioc_hb_monitor(struct bfa_ioc *ioc);
static void bfa_ioc_hb_stop(struct bfa_ioc *ioc);
static void bfa_ioc_reset(struct bfa_ioc *ioc, bool force);
static void bfa_ioc_mbox_poll(struct bfa_ioc *ioc);
static void bfa_ioc_mbox_flush(struct bfa_ioc *ioc);
static void bfa_ioc_recover(struct bfa_ioc *ioc);
static void bfa_ioc_event_notify(struct bfa_ioc *, enum bfa_ioc_event);
static void bfa_ioc_disable_comp(struct bfa_ioc *ioc);
static void bfa_ioc_lpu_stop(struct bfa_ioc *ioc);
static void bfa_nw_ioc_debug_save_ftrc(struct bfa_ioc *ioc);
static void bfa_ioc_fail_notify(struct bfa_ioc *ioc);
static void bfa_ioc_pf_enabled(struct bfa_ioc *ioc);
static void bfa_ioc_pf_disabled(struct bfa_ioc *ioc);
static void bfa_ioc_pf_failed(struct bfa_ioc *ioc);
static void bfa_ioc_pf_hwfailed(struct bfa_ioc *ioc);
static void bfa_ioc_pf_fwmismatch(struct bfa_ioc *ioc);
static enum bfa_status bfa_ioc_boot(struct bfa_ioc *ioc,
                        enum bfi_fwboot_type boot_type, u32 boot_param);
static u32 bfa_ioc_smem_pgnum(struct bfa_ioc *ioc, u32 fmaddr);
static void bfa_ioc_get_adapter_serial_num(struct bfa_ioc *ioc,
                                                char *serial_num);
static void bfa_ioc_get_adapter_fw_ver(struct bfa_ioc *ioc,
                                                char *fw_ver);
static void bfa_ioc_get_pci_chip_rev(struct bfa_ioc *ioc,
                                                char *chip_rev);
static void bfa_ioc_get_adapter_optrom_ver(struct bfa_ioc *ioc,
                                                char *optrom_ver);
static void bfa_ioc_get_adapter_manufacturer(struct bfa_ioc *ioc,
                                                char *manufacturer);
static void bfa_ioc_get_adapter_model(struct bfa_ioc *ioc, char *model);
static u64 bfa_ioc_get_pwwn(struct bfa_ioc *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, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, reset, struct bfa_ioc, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, enabling, struct bfa_ioc, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, getattr, struct bfa_ioc, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, op, struct bfa_ioc, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, fail_retry, struct bfa_ioc, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, fail, struct bfa_ioc, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, disabling, struct bfa_ioc, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, disabled, struct bfa_ioc, enum ioc_event);
bfa_fsm_state_decl(bfa_ioc, hwfail, struct bfa_ioc, enum ioc_event);

static struct bfa_sm_table 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},
};

/*
 * Forward declareations for iocpf state machine
 */
static void bfa_iocpf_enable(struct bfa_ioc *ioc);
static void bfa_iocpf_disable(struct bfa_ioc *ioc);
static void bfa_iocpf_fail(struct bfa_ioc *ioc);
static void bfa_iocpf_initfail(struct bfa_ioc *ioc);
static void bfa_iocpf_getattrfail(struct bfa_ioc *ioc);
static void bfa_iocpf_stop(struct bfa_ioc *ioc);

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

static struct bfa_sm_table 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 *ioc)
{
}

/* IOC is in uninit state. */
static void
bfa_ioc_sm_uninit(struct bfa_ioc *ioc, enum ioc_event event)
{
        switch (event) {
        case IOC_E_RESET:
                bfa_fsm_set_state(ioc, bfa_ioc_sm_reset);
                break;

        default:
                bfa_sm_fault(event);
        }
}

/* Reset entry actions -- initialize state machine */
static void
bfa_ioc_sm_reset_entry(struct bfa_ioc *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 *ioc, enum ioc_event 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(event);
        }
}

static void
bfa_ioc_sm_enabling_entry(struct bfa_ioc *ioc)
{
        bfa_iocpf_enable(ioc);
}

/* Host IOC function is being enabled, awaiting response from firmware.
 * Semaphore is acquired.
 */
static void
bfa_ioc_sm_enabling(struct bfa_ioc *ioc, enum ioc_event 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_iocpf_initfail(ioc);
                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_iocpf_stop(ioc);
                break;

        case IOC_E_ENABLE:
                break;

        default:
                bfa_sm_fault(event);
        }
}

/* Semaphore should be acquired for version check. */
static void
bfa_ioc_sm_getattr_entry(struct bfa_ioc *ioc)
{
        mod_timer(&ioc->ioc_timer, jiffies +
                msecs_to_jiffies(BFA_IOC_TOV));
        bfa_ioc_send_getattr(ioc);
}

/* IOC configuration in progress. Timer is active. */
static void
bfa_ioc_sm_getattr(struct bfa_ioc *ioc, enum ioc_event event)
{
        switch (event) {
        case IOC_E_FWRSP_GETATTR:
                del_timer(&ioc->ioc_timer);
                bfa_fsm_set_state(ioc, bfa_ioc_sm_op);
                break;

        case IOC_E_PFFAILED:
        case IOC_E_HWERROR:
                del_timer(&ioc->ioc_timer);
                /* 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_iocpf_getattrfail(ioc);
                break;

        case IOC_E_DISABLE:
                del_timer(&ioc->ioc_timer);
                bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
                break;

        case IOC_E_ENABLE:
                break;

        default:
                bfa_sm_fault(event);
        }
}

static void
bfa_ioc_sm_op_entry(struct bfa_ioc *ioc)
{
        ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_OK);
        bfa_ioc_event_notify(ioc, BFA_IOC_E_ENABLED);
        bfa_ioc_hb_monitor(ioc);
}

static void
bfa_ioc_sm_op(struct bfa_ioc *ioc, enum ioc_event event)
{
        switch (event) {
        case IOC_E_ENABLE:
                break;

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

        case IOC_E_PFFAILED:
        case IOC_E_HWERROR:
                bfa_ioc_hb_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_iocpf_fail(ioc);
                break;

        default:
                bfa_sm_fault(event);
        }
}

static void
bfa_ioc_sm_disabling_entry(struct bfa_ioc *ioc)
{
        bfa_iocpf_disable(ioc);
}

/* IOC is being disabled */
static void
bfa_ioc_sm_disabling(struct bfa_ioc *ioc, enum ioc_event 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_iocpf_fail(ioc);
                break;

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

        default:
                bfa_sm_fault(event);
        }
}

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

static void
bfa_ioc_sm_disabled(struct bfa_ioc *ioc, enum ioc_event 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_iocpf_stop(ioc);
                break;

        default:
                bfa_sm_fault(event);
        }
}

static void
bfa_ioc_sm_fail_retry_entry(struct bfa_ioc *ioc)
{
}

/* Hardware initialization retry. */
static void
bfa_ioc_sm_fail_retry(struct bfa_ioc *ioc, enum ioc_event 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_iocpf_initfail(ioc);
                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_iocpf_stop(ioc);
                break;

        default:
                bfa_sm_fault(event);
        }
}

static void
bfa_ioc_sm_fail_entry(struct bfa_ioc *ioc)
{
}

/* IOC failure. */
static void
bfa_ioc_sm_fail(struct bfa_ioc *ioc, enum ioc_event 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_iocpf_stop(ioc);
                break;

        case IOC_E_HWERROR:
                /* HB failure notification, ignore. */
                break;

        default:
                bfa_sm_fault(event);
        }
}

static void
bfa_ioc_sm_hwfail_entry(struct bfa_ioc *ioc)
{
}

/* IOC failure. */
static void
bfa_ioc_sm_hwfail(struct bfa_ioc *ioc, enum ioc_event 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;

        default:
                bfa_sm_fault(event);
        }
}

/* IOCPF State Machine */

/* Reset entry actions -- initialize state machine */
static void
bfa_iocpf_sm_reset_entry(struct bfa_iocpf *iocpf)
{
        iocpf->fw_mismatch_notified = false;
        iocpf->auto_recover = bfa_nw_auto_recover;
}

/* Beginning state. IOC is in reset state. */
static void
bfa_iocpf_sm_reset(struct bfa_iocpf *iocpf, enum iocpf_event 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(event);
        }
}

/* Semaphore should be acquired for version check. */
static void
bfa_iocpf_sm_fwcheck_entry(struct bfa_iocpf *iocpf)
{
        bfa_ioc_hw_sem_init(iocpf->ioc);
        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 *iocpf, enum iocpf_event event)
{
        struct bfa_ioc *ioc = iocpf->ioc;

        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);
                                bfa_nw_ioc_hw_sem_release(ioc);
                                mod_timer(&ioc->sem_timer, jiffies +
                                        msecs_to_jiffies(BFA_IOC_HWSEM_TOV));
                        }
                } else {
                        bfa_nw_ioc_hw_sem_release(ioc);
                        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_ioc_pf_hwfailed(ioc);
                break;

        case IOCPF_E_DISABLE:
                bfa_ioc_hw_sem_get_cancel(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
                bfa_ioc_pf_disabled(ioc);
                break;

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

        default:
                bfa_sm_fault(event);
        }
}

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

        iocpf->fw_mismatch_notified = true;
        mod_timer(&(iocpf->ioc)->iocpf_timer, jiffies +
                msecs_to_jiffies(BFA_IOC_TOV));
}

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

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

        case IOCPF_E_DISABLE:
                del_timer(&ioc->iocpf_timer);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
                bfa_ioc_pf_disabled(ioc);
                break;

        case IOCPF_E_STOP:
                del_timer(&ioc->iocpf_timer);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
                break;

        default:
                bfa_sm_fault(event);
        }
}

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

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

        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 {
                        bfa_nw_ioc_hw_sem_release(ioc);
                        mod_timer(&ioc->sem_timer, jiffies +
                                msecs_to_jiffies(BFA_IOC_HWSEM_TOV));
                }
                break;

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

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

        default:
                bfa_sm_fault(event);
        }
}

static void
bfa_iocpf_sm_hwinit_entry(struct bfa_iocpf *iocpf)
{
        iocpf->poll_time = 0;
        bfa_ioc_reset(iocpf->ioc, false);
}

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

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

        case IOCPF_E_TIMEOUT:
                bfa_nw_ioc_hw_sem_release(ioc);
                        bfa_ioc_pf_failed(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail_sync);
                break;

        case IOCPF_E_DISABLE:
                del_timer(&ioc->iocpf_timer);
                bfa_ioc_sync_leave(ioc);
                bfa_nw_ioc_hw_sem_release(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabled);
                break;

        default:
                bfa_sm_fault(event);
        }
}

static void
bfa_iocpf_sm_enabling_entry(struct bfa_iocpf *iocpf)
{
        mod_timer(&(iocpf->ioc)->iocpf_timer, jiffies +
                msecs_to_jiffies(BFA_IOC_TOV));
        /**
         * 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 *iocpf, enum iocpf_event event)
{
        struct bfa_ioc *ioc = iocpf->ioc;

        switch (event) {
        case IOCPF_E_FWRSP_ENABLE:
                del_timer(&ioc->iocpf_timer);
                bfa_nw_ioc_hw_sem_release(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_ready);
                break;

        case IOCPF_E_INITFAIL:
                del_timer(&ioc->iocpf_timer);
                /*
                 * !!! fall through !!!
                 */
        case IOCPF_E_TIMEOUT:
                bfa_nw_ioc_hw_sem_release(ioc);
                if (event == IOCPF_E_TIMEOUT)
                        bfa_ioc_pf_failed(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail_sync);
                break;

        case IOCPF_E_DISABLE:
                del_timer(&ioc->iocpf_timer);
                bfa_nw_ioc_hw_sem_release(ioc);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling);
                break;

        default:
                bfa_sm_fault(event);
        }
}

static void
bfa_iocpf_sm_ready_entry(struct bfa_iocpf *iocpf)
{
        bfa_ioc_pf_enabled(iocpf->ioc);
}

static void
bfa_iocpf_sm_ready(struct bfa_iocpf *iocpf, enum iocpf_event 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(event);
        }
}

static void
bfa_iocpf_sm_disabling_entry(struct bfa_iocpf *iocpf)
{
        mod_timer(&(iocpf->ioc)->iocpf_timer, jiffies +
                msecs_to_jiffies(BFA_IOC_TOV));
        bfa_ioc_send_disable(iocpf->ioc);
}

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

        switch (event) {
        case IOCPF_E_FWRSP_DISABLE:
                del_timer(&ioc->iocpf_timer);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
                break;

        case IOCPF_E_FAIL:
                del_timer(&ioc->iocpf_timer);
                /*
                 * !!! fall through !!!
                 */

        case IOCPF_E_TIMEOUT:
                bfa_ioc_set_cur_ioc_fwstate(ioc, BFI_IOC_FAIL);
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
                break;

        case IOCPF_E_FWRSP_ENABLE:
                break;

        default:
                bfa_sm_fault(event);
        }
}

static void
bfa_iocpf_sm_disabling_sync_entry(struct bfa_iocpf *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 *iocpf, enum iocpf_event event)
{
        struct bfa_ioc *ioc = iocpf->ioc;

        switch (event) {
        case IOCPF_E_SEMLOCKED:
                bfa_ioc_sync_leave(ioc);
                bfa_nw_ioc_hw_sem_release(ioc);
                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_ioc_pf_hwfailed(ioc);
                break;

        case IOCPF_E_FAIL:
                break;

        default:
                bfa_sm_fault(event);
        }
}

/* IOC disable completion entry. */
static void
bfa_iocpf_sm_disabled_entry(struct bfa_iocpf *iocpf)
{
        bfa_ioc_mbox_flush(iocpf->ioc);
        bfa_ioc_pf_disabled(iocpf->ioc);
}

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

        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(event);
        }
}

static void
bfa_iocpf_sm_initfail_sync_entry(struct bfa_iocpf *iocpf)
{
        bfa_nw_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 *iocpf, enum iocpf_event event)
{
        struct bfa_ioc *ioc = iocpf->ioc;

        switch (event) {
        case IOCPF_E_SEMLOCKED:
                bfa_ioc_notify_fail(ioc);
                bfa_ioc_sync_leave(ioc);
                bfa_ioc_set_cur_ioc_fwstate(ioc, BFI_IOC_FAIL);
                bfa_nw_ioc_hw_sem_release(ioc);
                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_ioc_pf_hwfailed(ioc);
                break;

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

        case IOCPF_E_STOP:
                bfa_ioc_hw_sem_get_cancel(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(event);
        }
}

static void
bfa_iocpf_sm_initfail_entry(struct bfa_iocpf *iocpf)
{
}

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

        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(event);
        }
}

static void
bfa_iocpf_sm_fail_sync_entry(struct bfa_iocpf *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);
}

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

        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);
                        bfa_ioc_set_cur_ioc_fwstate(ioc, BFI_IOC_FAIL);
                        bfa_nw_ioc_hw_sem_release(ioc);
                        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 {
                                bfa_nw_ioc_hw_sem_release(ioc);
                                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_ioc_pf_hwfailed(ioc);
                break;

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

        case IOCPF_E_FAIL:
                break;

        default:
                bfa_sm_fault(event);
        }
}

static void
bfa_iocpf_sm_fail_entry(struct bfa_iocpf *iocpf)
{
}

/* IOC is in failed state. */
static void
bfa_iocpf_sm_fail(struct bfa_iocpf *iocpf, enum iocpf_event event)
{
        switch (event) {
        case IOCPF_E_DISABLE:
                bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabled);
                break;

        default:
                bfa_sm_fault(event);
        }
}

/* BFA IOC private functions */

/* Notify common modules registered for notification. */
static void
bfa_ioc_event_notify(struct bfa_ioc *ioc, enum bfa_ioc_event event)
{
        struct bfa_ioc_notify *notify;

        list_for_each_entry(notify, &ioc->notify_q, qe)
                notify->cbfn(notify->cbarg, event);
}

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

bool
bfa_nw_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 true;

        return false;
}

void
bfa_nw_ioc_sem_release(void __iomem *sem_reg)
{
        readl(sem_reg);
        writel(1, sem_reg);
}

/* Clear fwver hdr */
static void
bfa_ioc_fwver_clear(struct bfa_ioc *ioc)
{
        u32 pgnum, pgoff, loff = 0;
        int i;

        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) / sizeof(u32)); i++) {
                writel(0, ioc->ioc_regs.smem_page_start + loff);
                loff += sizeof(u32);
        }
}


static void
bfa_ioc_hw_sem_init(struct bfa_ioc *ioc)
{
        struct bfi_ioc_image_hdr fwhdr;
        u32 fwstate, r32;

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

        fwstate = bfa_ioc_get_cur_ioc_fwstate(ioc);
        if (fwstate == BFI_IOC_UNINIT) {
                writel(1, ioc->ioc_regs.ioc_init_sem_reg);
                return;
        }

        bfa_nw_ioc_fwver_get(ioc, &fwhdr);

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

        bfa_ioc_fwver_clear(ioc);
        bfa_ioc_set_cur_ioc_fwstate(ioc, BFI_IOC_UNINIT);
        bfa_ioc_set_alt_ioc_fwstate(ioc, BFI_IOC_UNINIT);

        /*
         * Try to lock and then unlock the semaphore.
         */
        readl(ioc->ioc_regs.ioc_sem_reg);
        writel(1, ioc->ioc_regs.ioc_sem_reg);

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

static void
bfa_ioc_hw_sem_get(struct bfa_ioc *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) {
                bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_SEM_ERROR);
                return;
        }
        if (!(r32 & 1)) {
                bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_SEMLOCKED);
                return;
        }

        mod_timer(&ioc->sem_timer, jiffies +
                msecs_to_jiffies(BFA_IOC_HWSEM_TOV));
}

void
bfa_nw_ioc_hw_sem_release(struct bfa_ioc *ioc)
{
        writel(1, ioc->ioc_regs.ioc_sem_reg);
}

static void
bfa_ioc_hw_sem_get_cancel(struct bfa_ioc *ioc)
{
        del_timer(&ioc->sem_timer);
}

/* Initialize LPU local memory (aka secondary memory / SRAM) */
static void
bfa_ioc_lmem_init(struct bfa_ioc *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.
         */
        BUG_ON(!(pss_ctl & __PSS_LMEM_INIT_DONE));

        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 *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 *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_nw_ioc_fwver_get(struct bfa_ioc *ioc, struct bfi_ioc_image_hdr *fwhdr)
{
        u32     pgnum;
        u32     loff = 0;
        int             i;
        u32     *fwsig = (u32 *) fwhdr;

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

        for (i = 0; i < (sizeof(struct bfi_ioc_image_hdr) / sizeof(u32));
             i++) {
                fwsig[i] =
                        swab32(readl(loff + ioc->ioc_regs.smem_page_start));
                loff += sizeof(u32);
        }
}

static bool
bfa_ioc_fwver_md5_check(struct bfi_ioc_image_hdr *fwhdr_1,
                        struct bfi_ioc_image_hdr *fwhdr_2)
{
        int i;

        for (i = 0; i < BFI_IOC_MD5SUM_SZ; i++) {
                if (fwhdr_1->md5sum[i] != fwhdr_2->md5sum[i])
                        return false;
        }

        return true;
}

/* Returns TRUE if major minor and maintenance are same.
 * If patch version are same, check for MD5 Checksum to be same.
 */
static bool
bfa_ioc_fw_ver_compatible(struct bfi_ioc_image_hdr *drv_fwhdr,
                          struct bfi_ioc_image_hdr *fwhdr_to_cmp)
{
        if (drv_fwhdr->signature != fwhdr_to_cmp->signature)
                return false;
        if (drv_fwhdr->fwver.major != fwhdr_to_cmp->fwver.major)
                return false;
        if (drv_fwhdr->fwver.minor != fwhdr_to_cmp->fwver.minor)
                return false;
        if (drv_fwhdr->fwver.maint != fwhdr_to_cmp->fwver.maint)
                return false;
        if (drv_fwhdr->fwver.patch == fwhdr_to_cmp->fwver.patch &&
            drv_fwhdr->fwver.phase == fwhdr_to_cmp->fwver.phase &&
            drv_fwhdr->fwver.build == fwhdr_to_cmp->fwver.build)
                return bfa_ioc_fwver_md5_check(drv_fwhdr, fwhdr_to_cmp);

        return true;
}

static bool
bfa_ioc_flash_fwver_valid(struct bfi_ioc_image_hdr *flash_fwhdr)
{
        if (flash_fwhdr->fwver.major == 0 || flash_fwhdr->fwver.major == 0xFF)
                return false;

        return true;
}

static bool
fwhdr_is_ga(struct bfi_ioc_image_hdr *fwhdr)
{
        if (fwhdr->fwver.phase == 0 &&
            fwhdr->fwver.build == 0)
                return false;

        return true;
}

/* Returns TRUE if both are compatible and patch of fwhdr_to_cmp is better. */
static enum bfi_ioc_img_ver_cmp
bfa_ioc_fw_ver_patch_cmp(struct bfi_ioc_image_hdr *base_fwhdr,
                         struct bfi_ioc_image_hdr *fwhdr_to_cmp)
{
        if (!bfa_ioc_fw_ver_compatible(base_fwhdr, fwhdr_to_cmp))
                return BFI_IOC_IMG_VER_INCOMP;

        if (fwhdr_to_cmp->fwver.patch > base_fwhdr->fwver.patch)
                return BFI_IOC_IMG_VER_BETTER;
        else if (fwhdr_to_cmp->fwver.patch < base_fwhdr->fwver.patch)
                return BFI_IOC_IMG_VER_OLD;

        /* GA takes priority over internal builds of the same patch stream.
         * At this point major minor maint and patch numbers are same.
         */
        if (fwhdr_is_ga(base_fwhdr))
                if (fwhdr_is_ga(fwhdr_to_cmp))
                        return BFI_IOC_IMG_VER_SAME;
                else
                        return BFI_IOC_IMG_VER_OLD;
        else
                if (fwhdr_is_ga(fwhdr_to_cmp))
                        return BFI_IOC_IMG_VER_BETTER;

        if (fwhdr_to_cmp->fwver.phase > base_fwhdr->fwver.phase)
                return BFI_IOC_IMG_VER_BETTER;
        else if (fwhdr_to_cmp->fwver.phase < base_fwhdr->fwver.phase)
                return BFI_IOC_IMG_VER_OLD;

        if (fwhdr_to_cmp->fwver.build > base_fwhdr->fwver.build)
                return BFI_IOC_IMG_VER_BETTER;
        else if (fwhdr_to_cmp->fwver.build < base_fwhdr->fwver.build)
                return BFI_IOC_IMG_VER_OLD;

        /* All Version Numbers are equal.
         * Md5 check to be done as a part of compatibility check.
         */
        return BFI_IOC_IMG_VER_SAME;
}

/* register definitions */
#define FLI_CMD_REG                     0x0001d000
#define FLI_WRDATA_REG                  0x0001d00c
#define FLI_RDDATA_REG                  0x0001d010
#define FLI_ADDR_REG                    0x0001d004
#define FLI_DEV_STATUS_REG              0x0001d014

#define BFA_FLASH_FIFO_SIZE             128     /* fifo size */
#define BFA_FLASH_CHECK_MAX             10000   /* max # of status check */
#define BFA_FLASH_BLOCKING_OP_MAX       1000000 /* max # of blocking op check */
#define BFA_FLASH_WIP_MASK              0x01    /* write in progress bit mask */

#define NFC_STATE_RUNNING               0x20000001
#define NFC_STATE_PAUSED                0x00004560
#define NFC_VER_VALID                   0x147

enum bfa_flash_cmd {
        BFA_FLASH_FAST_READ     = 0x0b, /* fast read */
        BFA_FLASH_WRITE_ENABLE  = 0x06, /* write enable */
        BFA_FLASH_SECTOR_ERASE  = 0xd8, /* sector erase */
        BFA_FLASH_WRITE         = 0x02, /* write */
        BFA_FLASH_READ_STATUS   = 0x05, /* read status */
};

/* hardware error definition */
enum bfa_flash_err {
        BFA_FLASH_NOT_PRESENT   = -1,   /*!< flash not present */
        BFA_FLASH_UNINIT        = -2,   /*!< flash not initialized */
        BFA_FLASH_BAD           = -3,   /*!< flash bad */
        BFA_FLASH_BUSY          = -4,   /*!< flash busy */
        BFA_FLASH_ERR_CMD_ACT   = -5,   /*!< command active never cleared */
        BFA_FLASH_ERR_FIFO_CNT  = -6,   /*!< fifo count never cleared */
        BFA_FLASH_ERR_WIP       = -7,   /*!< write-in-progress never cleared */
        BFA_FLASH_ERR_TIMEOUT   = -8,   /*!< fli timeout */
        BFA_FLASH_ERR_LEN       = -9,   /*!< invalid length */
};

/* flash command register data structure */
union bfa_flash_cmd_reg {
        struct {
#ifdef __BIG_ENDIAN
                u32     act:1;
                u32     rsv:1;
                u32     write_cnt:9;
                u32     read_cnt:9;
                u32     addr_cnt:4;
                u32     cmd:8;
#else
                u32     cmd:8;
                u32     addr_cnt:4;
                u32     read_cnt:9;
                u32     write_cnt:9;
                u32     rsv:1;
                u32     act:1;
#endif
        } r;
        u32     i;
};

/* flash device status register data structure */
union bfa_flash_dev_status_reg {
        struct {
#ifdef __BIG_ENDIAN
                u32     rsv:21;
                u32     fifo_cnt:6;
                u32     busy:1;
                u32     init_status:1;
                u32     present:1;
                u32     bad:1;
                u32     good:1;
#else
                u32     good:1;
                u32     bad:1;
                u32     present:1;
                u32     init_status:1;
                u32     busy:1;
                u32     fifo_cnt:6;
                u32     rsv:21;
#endif
        } r;
        u32     i;
};

/* flash address register data structure */
union bfa_flash_addr_reg {
        struct {
#ifdef __BIG_ENDIAN
                u32     addr:24;
                u32     dummy:8;
#else
                u32     dummy:8;
                u32     addr:24;
#endif
        } r;
        u32     i;
};

/* Flash raw private functions */
static void
bfa_flash_set_cmd(void __iomem *pci_bar, u8 wr_cnt,
                  u8 rd_cnt, u8 ad_cnt, u8 op)
{
        union bfa_flash_cmd_reg cmd;

        cmd.i = 0;
        cmd.r.act = 1;
        cmd.r.write_cnt = wr_cnt;
        cmd.r.read_cnt = rd_cnt;
        cmd.r.addr_cnt = ad_cnt;
        cmd.r.cmd = op;
        writel(cmd.i, (pci_bar + FLI_CMD_REG));
}

static void
bfa_flash_set_addr(void __iomem *pci_bar, u32 address)
{
        union bfa_flash_addr_reg addr;

        addr.r.addr = address & 0x00ffffff;
        addr.r.dummy = 0;
        writel(addr.i, (pci_bar + FLI_ADDR_REG));
}

static int
bfa_flash_cmd_act_check(void __iomem *pci_bar)
{
        union bfa_flash_cmd_reg cmd;

        cmd.i = readl(pci_bar + FLI_CMD_REG);

        if (cmd.r.act)
                return BFA_FLASH_ERR_CMD_ACT;

        return 0;
}

/* Flush FLI data fifo. */
static int
bfa_flash_fifo_flush(void __iomem *pci_bar)
{
        u32 i;
        u32 t;
        union bfa_flash_dev_status_reg dev_status;

        dev_status.i = readl(pci_bar + FLI_DEV_STATUS_REG);

        if (!dev_status.r.fifo_cnt)
                return 0;

        /* fifo counter in terms of words */
        for (i = 0; i < dev_status.r.fifo_cnt; i++)
                t = readl(pci_bar + FLI_RDDATA_REG);

        /* Check the device status. It may take some time. */
        for (i = 0; i < BFA_FLASH_CHECK_MAX; i++) {
                dev_status.i = readl(pci_bar + FLI_DEV_STATUS_REG);
                if (!dev_status.r.fifo_cnt)
                        break;
        }

        if (dev_status.r.fifo_cnt)
                return BFA_FLASH_ERR_FIFO_CNT;

        return 0;
}

/* Read flash status. */
static int
bfa_flash_status_read(void __iomem *pci_bar)
{
        union bfa_flash_dev_status_reg  dev_status;
        int                             status;
        u32                     ret_status;
        int                             i;

        status = bfa_flash_fifo_flush(pci_bar);
        if (status < 0)
                return status;

        bfa_flash_set_cmd(pci_bar, 0, 4, 0, BFA_FLASH_READ_STATUS);

        for (i = 0; i < BFA_FLASH_CHECK_MAX; i++) {
                status = bfa_flash_cmd_act_check(pci_bar);
                if (!status)
                        break;
        }

        if (status)
                return status;

        dev_status.i = readl(pci_bar + FLI_DEV_STATUS_REG);
        if (!dev_status.r.fifo_cnt)
                return BFA_FLASH_BUSY;

        ret_status = readl(pci_bar + FLI_RDDATA_REG);
        ret_status >>= 24;

        status = bfa_flash_fifo_flush(pci_bar);
        if (status < 0)
                return status;

        return ret_status;
}

/* Start flash read operation. */
static int
bfa_flash_read_start(void __iomem *pci_bar, u32 offset, u32 len,
                     char *buf)
{
        int status;

        /* len must be mutiple of 4 and not exceeding fifo size */
        if (len == 0 || len > BFA_FLASH_FIFO_SIZE || (len & 0x03) != 0)
                return BFA_FLASH_ERR_LEN;

        /* check status */
        status = bfa_flash_status_read(pci_bar);
        if (status == BFA_FLASH_BUSY)
                status = bfa_flash_status_read(pci_bar);

        if (status < 0)
                return status;

        /* check if write-in-progress bit is cleared */
        if (status & BFA_FLASH_WIP_MASK)
                return BFA_FLASH_ERR_WIP;

        bfa_flash_set_addr(pci_bar, offset);

        bfa_flash_set_cmd(pci_bar, 0, (u8)len, 4, BFA_FLASH_FAST_READ);

        return 0;
}

/* Check flash read operation. */
static u32
bfa_flash_read_check(void __iomem *pci_bar)
{
        if (bfa_flash_cmd_act_check(pci_bar))
                return 1;

        return 0;
}

/* End flash read operation. */
static void
bfa_flash_read_end(void __iomem *pci_bar, u32 len, char *buf)
{
        u32 i;

        /* read data fifo up to 32 words */
        for (i = 0; i < len; i += 4) {
                u32 w = readl(pci_bar + FLI_RDDATA_REG);
                *((u32 *)(buf + i)) = swab32(w);
        }

        bfa_flash_fifo_flush(pci_bar);
}

/* Perform flash raw read. */

#define FLASH_BLOCKING_OP_MAX   500
#define FLASH_SEM_LOCK_REG      0x18820

static int
bfa_raw_sem_get(void __iomem *bar)
{
        int     locked;

        locked = readl(bar + FLASH_SEM_LOCK_REG);

        return !locked;
}

static enum bfa_status
bfa_flash_sem_get(void __iomem *bar)
{
        u32 n = FLASH_BLOCKING_OP_MAX;

        while (!bfa_raw_sem_get(bar)) {
                if (--n <= 0)
                        return BFA_STATUS_BADFLASH;
                mdelay(10);
        }
        return BFA_STATUS_OK;
}

static void
bfa_flash_sem_put(void __iomem *bar)
{
        writel(0, (bar + FLASH_SEM_LOCK_REG));
}

static enum bfa_status
bfa_flash_raw_read(void __iomem *pci_bar, u32 offset, char *buf,
                   u32 len)
{
        u32 n;
        int status;
        u32 off, l, s, residue, fifo_sz;

        residue = len;
        off = 0;
        fifo_sz = BFA_FLASH_FIFO_SIZE;
        status = bfa_flash_sem_get(pci_bar);
        if (status != BFA_STATUS_OK)
                return status;

        while (residue) {
                s = offset + off;
                n = s / fifo_sz;
                l = (n + 1) * fifo_sz - s;
                if (l > residue)
                        l = residue;

                status = bfa_flash_read_start(pci_bar, offset + off, l,
                                                                &buf[off]);
                if (status < 0) {
                        bfa_flash_sem_put(pci_bar);
                        return BFA_STATUS_FAILED;
                }

                n = BFA_FLASH_BLOCKING_OP_MAX;
                while (bfa_flash_read_check(pci_bar)) {
                        if (--n <= 0) {
                                bfa_flash_sem_put(pci_bar);
                                return BFA_STATUS_FAILED;
                        }
                }

                bfa_flash_read_end(pci_bar, l, &buf[off]);

                residue -= l;
                off += l;
        }
        bfa_flash_sem_put(pci_bar);

        return BFA_STATUS_OK;
}

#define BFA_FLASH_PART_FWIMG_ADDR       0x100000 /* fw image address */

static enum bfa_status
bfa_nw_ioc_flash_img_get_chnk(struct bfa_ioc *ioc, u32 off,
                              u32 *fwimg)
{
        return bfa_flash_raw_read(ioc->pcidev.pci_bar_kva,
                        BFA_FLASH_PART_FWIMG_ADDR + (off * sizeof(u32)),
                        (char *)fwimg, BFI_FLASH_CHUNK_SZ);
}

static enum bfi_ioc_img_ver_cmp
bfa_ioc_flash_fwver_cmp(struct bfa_ioc *ioc,
                        struct bfi_ioc_image_hdr *base_fwhdr)
{
        struct bfi_ioc_image_hdr *flash_fwhdr;
        enum bfa_status status;
        u32 fwimg[BFI_FLASH_CHUNK_SZ_WORDS];

        status = bfa_nw_ioc_flash_img_get_chnk(ioc, 0, fwimg);
        if (status != BFA_STATUS_OK)
                return BFI_IOC_IMG_VER_INCOMP;

        flash_fwhdr = (struct bfi_ioc_image_hdr *)fwimg;
        if (bfa_ioc_flash_fwver_valid(flash_fwhdr))
                return bfa_ioc_fw_ver_patch_cmp(base_fwhdr, flash_fwhdr);
        else
                return BFI_IOC_IMG_VER_INCOMP;
}

/**
 * Returns TRUE if driver is willing to work with current smem f/w version.
 */
bool
bfa_nw_ioc_fwver_cmp(struct bfa_ioc *ioc, struct bfi_ioc_image_hdr *fwhdr)
{
        struct bfi_ioc_image_hdr *drv_fwhdr;
        enum bfi_ioc_img_ver_cmp smem_flash_cmp, drv_smem_cmp;

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

        /* If smem is incompatible or old, driver should not work with it. */
        drv_smem_cmp = bfa_ioc_fw_ver_patch_cmp(drv_fwhdr, fwhdr);
        if (drv_smem_cmp == BFI_IOC_IMG_VER_INCOMP ||
            drv_smem_cmp == BFI_IOC_IMG_VER_OLD) {
                return false;
        }

        /* IF Flash has a better F/W than smem do not work with smem.
         * If smem f/w == flash f/w, as smem f/w not old | incmp, work with it.
         * If Flash is old or incomp work with smem iff smem f/w == drv f/w.
         */
        smem_flash_cmp = bfa_ioc_flash_fwver_cmp(ioc, fwhdr);

        if (smem_flash_cmp == BFI_IOC_IMG_VER_BETTER)
                return false;
        else if (smem_flash_cmp == BFI_IOC_IMG_VER_SAME)
                return true;
        else
                return (drv_smem_cmp == BFI_IOC_IMG_VER_SAME) ?
                        true : false;
}

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

        bfa_nw_ioc_fwver_get(ioc, &fwhdr);
        if (swab32(fwhdr.bootenv) != boot_env)
                return false;

        return bfa_nw_ioc_fwver_cmp(ioc, &fwhdr);
}

/* Conditionally flush any pending message from firmware at start. */
static void
bfa_ioc_msgflush(struct bfa_ioc *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 *ioc, bool force)
{
        enum bfi_ioc_state ioc_fwstate;
        bool fwvalid;
        u32 boot_env;

        ioc_fwstate = bfa_ioc_get_cur_ioc_fwstate(ioc);

        if (force)
                ioc_fwstate = BFI_IOC_UNINIT;

        boot_env = BFI_FWBOOT_ENV_OS;

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

        if (!fwvalid) {
                if (bfa_ioc_boot(ioc, BFI_FWBOOT_TYPE_NORMAL, boot_env) ==
                                                                BFA_STATUS_OK)
                        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 (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.
         */
        if (bfa_ioc_boot(ioc, BFI_FWBOOT_TYPE_NORMAL, boot_env) ==
                                                        BFA_STATUS_OK)
                bfa_ioc_poll_fwinit(ioc);
}

void
bfa_nw_ioc_timeout(struct bfa_ioc *ioc)
{
        bfa_fsm_send_event(ioc, IOC_E_TIMEOUT);
}

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

        BUG_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 *ioc)
{
        struct bfi_ioc_ctrl_req enable_req;

        bfi_h2i_set(enable_req.mh, BFI_MC_IOC, BFI_IOC_H2I_ENABLE_REQ,
                    bfa_ioc_portid(ioc));
        enable_req.clscode = htons(ioc->clscode);
        enable_req.rsvd = htons(0);
        /* overflow in 2106 */
        enable_req.tv_sec = ntohl(ktime_get_real_seconds());
        bfa_ioc_mbox_send(ioc, &enable_req, sizeof(struct bfi_ioc_ctrl_req));
}

static void
bfa_ioc_send_disable(struct bfa_ioc *ioc)
{
        struct bfi_ioc_ctrl_req disable_req;

        bfi_h2i_set(disable_req.mh, BFI_MC_IOC, BFI_IOC_H2I_DISABLE_REQ,
                    bfa_ioc_portid(ioc));
        disable_req.clscode = htons(ioc->clscode);
        disable_req.rsvd = htons(0);
        /* overflow in 2106 */
        disable_req.tv_sec = ntohl(ktime_get_real_seconds());
        bfa_ioc_mbox_send(ioc, &disable_req, sizeof(struct bfi_ioc_ctrl_req));
}

static void
bfa_ioc_send_getattr(struct bfa_ioc *ioc)
{
        struct bfi_ioc_getattr_req 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));
}

void
bfa_nw_ioc_hb_check(struct bfa_ioc *ioc)
{
        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);
        mod_timer(&ioc->hb_timer, jiffies +
                msecs_to_jiffies(BFA_IOC_HB_TOV));
}

static void
bfa_ioc_hb_monitor(struct bfa_ioc *ioc)
{
        ioc->hb_count = readl(ioc->ioc_regs.heartbeat);
        mod_timer(&ioc->hb_timer, jiffies +
                msecs_to_jiffies(BFA_IOC_HB_TOV));
}

static void
bfa_ioc_hb_stop(struct bfa_ioc *ioc)
{
        del_timer(&ioc->hb_timer);
}

/* Initiate a full firmware download. */

static enum bfa_status
bfa_ioc_download_fw(struct bfa_ioc *ioc, u32 boot_type,
                    u32 boot_env)
{
        u32 *fwimg;
        u32 pgnum;
        u32 loff = 0;
        u32 chunkno = 0;
        u32 i;
        u32 asicmode;
        u32 fwimg_size;
        u32 fwimg_buf[BFI_FLASH_CHUNK_SZ_WORDS];
        enum bfa_status status;

        if (boot_env == BFI_FWBOOT_ENV_OS &&
            boot_type == BFI_FWBOOT_TYPE_FLASH) {
                fwimg_size = BFI_FLASH_IMAGE_SZ/sizeof(u32);

                status = bfa_nw_ioc_flash_img_get_chnk(ioc,
                        BFA_IOC_FLASH_CHUNK_ADDR(chunkno), fwimg_buf);
                if (status != BFA_STATUS_OK)
                        return status;

                fwimg = fwimg_buf;
        } else {
                fwimg_size = bfa_cb_image_get_size(bfa_ioc_asic_gen(ioc));
                fwimg = bfa_cb_image_get_chunk(bfa_ioc_asic_gen(ioc),
                                        BFA_IOC_FLASH_CHUNK_ADDR(chunkno));
        }

        pgnum = bfa_ioc_smem_pgnum(ioc, loff);

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

        for (i = 0; i < fwimg_size; i++) {
                if (BFA_IOC_FLASH_CHUNK_NO(i) != chunkno) {
                        chunkno = BFA_IOC_FLASH_CHUNK_NO(i);
                        if (boot_env == BFI_FWBOOT_ENV_OS &&
                            boot_type == BFI_FWBOOT_TYPE_FLASH) {
                                status = bfa_nw_ioc_flash_img_get_chnk(ioc,
                                        BFA_IOC_FLASH_CHUNK_ADDR(chunkno),
                                        fwimg_buf);
                                if (status != BFA_STATUS_OK)
                                        return status;

                                fwimg = fwimg_buf;
                        } else {
                                fwimg = bfa_cb_image_get_chunk(
                                        bfa_ioc_asic_gen(ioc),
                                        BFA_IOC_FLASH_CHUNK_ADDR(chunkno));
                        }
                }

                /**
                 * write smem
                 */
                writel(swab32(fwimg[BFA_IOC_FLASH_OFFSET_IN_CHUNK(i)]),
                       ioc->ioc_regs.smem_page_start + loff);

                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(bfa_ioc_smem_pgnum(ioc, 0),
                      ioc->ioc_regs.host_page_num_fn);

        /*
         * Set boot type, env and device mode at the end.
        */
        if (boot_env == BFI_FWBOOT_ENV_OS &&
            boot_type == BFI_FWBOOT_TYPE_FLASH) {
                boot_type = BFI_FWBOOT_TYPE_NORMAL;
        }
        asicmode = BFI_FWBOOT_DEVMODE(ioc->asic_gen, ioc->asic_mode,
                                        ioc->port0_mode, ioc->port1_mode);
        writel(asicmode, ((ioc->ioc_regs.smem_page_start)
                        + BFI_FWBOOT_DEVMODE_OFF));
        writel(boot_type, ((ioc->ioc_regs.smem_page_start)
                        + (BFI_FWBOOT_TYPE_OFF)));
        writel(boot_env, ((ioc->ioc_regs.smem_page_start)
                        + (BFI_FWBOOT_ENV_OFF)));
        return BFA_STATUS_OK;
}

static void
bfa_ioc_reset(struct bfa_ioc *ioc, bool force)
{
        bfa_ioc_hwinit(ioc, force);
}

/* BFA ioc enable reply by firmware */
static void
bfa_ioc_enable_reply(struct bfa_ioc *ioc, enum bfa_mode port_mode,
                        u8 cap_bm)
{
        struct bfa_iocpf *iocpf = &ioc->iocpf;

        ioc->port_mode = ioc->port_mode_cfg = port_mode;
        ioc->ad_cap_bm = cap_bm;
        bfa_fsm_send_event(iocpf, IOCPF_E_FWRSP_ENABLE);
}

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

        attr->adapter_prop  = ntohl(attr->adapter_prop);
        attr->card_type     = ntohl(attr->card_type);
        attr->maxfrsize     = ntohs(attr->maxfrsize);

        bfa_fsm_send_event(ioc, IOC_E_FWRSP_GETATTR);
}

/* Attach time initialization of mbox logic. */
static void
bfa_ioc_mbox_attach(struct bfa_ioc *ioc)
{
        struct bfa_ioc_mbox_mod *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 *ioc)
{
        struct bfa_ioc_mbox_mod *mod = &ioc->mbox_mod;
        struct bfa_mbox_cmd *cmd;
        bfa_mbox_cmd_cbfn_t cbfn;
        void *cbarg;
        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.
         */
        cmd = list_first_entry(&mod->cmd_q, struct bfa_mbox_cmd, qe);
        list_del(&cmd->qe);
        bfa_ioc_mbox_send(ioc, cmd->msg, sizeof(cmd->msg));

        /**
         * Give a callback to the client, indicating that the command is sent
         */
        if (cmd->cbfn) {
                cbfn = cmd->cbfn;
                cbarg = cmd->cbarg;
                cmd->cbfn = NULL;
                cbfn(cbarg);
        }
}

/* Cleanup any pending requests. */
static void
bfa_ioc_mbox_flush(struct bfa_ioc *ioc)
{
        struct bfa_ioc_mbox_mod *mod = &ioc->mbox_mod;
        struct bfa_mbox_cmd *cmd;

        while (!list_empty(&mod->cmd_q)) {
                cmd = list_first_entry(&mod->cmd_q, struct bfa_mbox_cmd, qe);
                list_del(&cmd->qe);
        }
}

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

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

        /*
         *  Hold semaphore to serialize pll init and fwtrc.
        */
        if (!bfa_nw_ioc_sem_get(ioc->ioc_regs.ioc_init_sem_reg))
                return 1;

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

        len = sz/sizeof(u32);
        for (i = 0; i < len; i++) {
                r32 = swab32(readl(loff + ioc->ioc_regs.smem_page_start));
                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);
        return 0;
}

/* Retrieve saved firmware trace from a prior IOC failure. */
int
bfa_nw_ioc_debug_fwtrc(struct bfa_ioc *ioc, void *trcdata, int *trclen)
{
        u32 loff = BFI_IOC_TRC_OFF + BNA_DBG_FWTRC_LEN * ioc->port_id;
        int tlen, status = 0;

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

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

/* Save firmware trace if configured. */
static void
bfa_nw_ioc_debug_save_ftrc(struct bfa_ioc *ioc)
{
        int tlen;

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

/* Retrieve saved firmware trace from a prior IOC failure. */
int
bfa_nw_ioc_debug_fwsave(struct bfa_ioc *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;
}

static void
bfa_ioc_fail_notify(struct bfa_ioc *ioc)
{
        /**
         * Notify driver and common modules registered for notification.
         */
        ioc->cbfn->hbfail_cbfn(ioc->bfa);
        bfa_ioc_event_notify(ioc, BFA_IOC_E_FAILED);
        bfa_nw_ioc_debug_save_ftrc(ioc);
}

/* IOCPF to IOC interface */
static void
bfa_ioc_pf_enabled(struct bfa_ioc *ioc)
{
        bfa_fsm_send_event(ioc, IOC_E_ENABLED);
}

static void
bfa_ioc_pf_disabled(struct bfa_ioc *ioc)
{
        bfa_fsm_send_event(ioc, IOC_E_DISABLED);
}

static void
bfa_ioc_pf_failed(struct bfa_ioc *ioc)
{
        bfa_fsm_send_event(ioc, IOC_E_PFFAILED);
}

static void
bfa_ioc_pf_hwfailed(struct bfa_ioc *ioc)
{
        bfa_fsm_send_event(ioc, IOC_E_HWFAILED);
}

static void
bfa_ioc_pf_fwmismatch(struct bfa_ioc *ioc)
{
        /**
         * Provide enable completion callback and AEN notification.
         */
        ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
}

/* IOC public */
static enum bfa_status
bfa_ioc_pll_init(struct bfa_ioc *ioc)
{
        /*
         *  Hold semaphore so that nobody can access the chip during init.
         */
        bfa_nw_ioc_sem_get(ioc->ioc_regs.ioc_init_sem_reg);

        bfa_ioc_pll_init_asic(ioc);

        ioc->pllinit = true;

        /* Initialize LMEM */
        bfa_ioc_lmem_init(ioc);

        /*
         *  release semaphore.
         */
        bfa_nw_ioc_sem_release(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.
 */
static enum bfa_status
bfa_ioc_boot(struct bfa_ioc *ioc, enum bfi_fwboot_type boot_type,
                u32 boot_env)
{
        struct bfi_ioc_image_hdr *drv_fwhdr;
        enum bfa_status status;
        bfa_ioc_stats(ioc, ioc_boots);

        if (bfa_ioc_pll_init(ioc) != BFA_STATUS_OK)
                return BFA_STATUS_FAILED;
        if (boot_env == BFI_FWBOOT_ENV_OS &&
            boot_type == BFI_FWBOOT_TYPE_NORMAL) {
                drv_fwhdr = (struct bfi_ioc_image_hdr *)
                        bfa_cb_image_get_chunk(bfa_ioc_asic_gen(ioc), 0);
                /* Work with Flash iff flash f/w is better than driver f/w.
                 * Otherwise push drivers firmware.
                 */
                if (bfa_ioc_flash_fwver_cmp(ioc, drv_fwhdr) ==
                        BFI_IOC_IMG_VER_BETTER)
                        boot_type = BFI_FWBOOT_TYPE_FLASH;
        }

        /**
         * Initialize IOC state of all functions on a chip reset.
         */
        if (boot_type == BFI_FWBOOT_TYPE_MEMTEST) {
                bfa_ioc_set_cur_ioc_fwstate(ioc, BFI_IOC_MEMTEST);
                bfa_ioc_set_alt_ioc_fwstate(ioc, BFI_IOC_MEMTEST);
        } else {
                bfa_ioc_set_cur_ioc_fwstate(ioc, BFI_IOC_INITING);
                bfa_ioc_set_alt_ioc_fwstate(ioc, BFI_IOC_INITING);
        }

        bfa_ioc_msgflush(ioc);
        status = bfa_ioc_download_fw(ioc, boot_type, boot_env);
        if (status == BFA_STATUS_OK)
                bfa_ioc_lpu_start(ioc);
        else
                bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_TIMEOUT);

        return status;
}

/* Enable/disable IOC failure auto recovery. */
void
bfa_nw_ioc_auto_recover(bool auto_recover)
{
        bfa_nw_auto_recover = auto_recover;
}

static bool
bfa_ioc_msgget(struct bfa_ioc *ioc, void *mbmsg)
{
        u32     *msgp = mbmsg;
        u32     r32;
        int             i;

        r32 = readl(ioc->ioc_regs.lpu_mbox_cmd);
        if ((r32 & 1) == 0)
                return 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] = htonl(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 true;
}

static void
bfa_ioc_isr(struct bfa_ioc *ioc, struct bfi_mbmsg *m)
{
        union bfi_ioc_i2h_msg_u *msg;
        struct bfa_iocpf *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:
                bfa_ioc_enable_reply(ioc,
                        (enum bfa_mode)msg->fw_event.port_mode,
                        msg->fw_event.cap_bm);
                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:
                BUG_ON(1);
        }
}

/**
 * bfa_nw_ioc_attach - IOC attach time initialization and setup.
 *
 * @ioc:        memory for IOC
 * @bfa:        driver instance structure
 */
void
bfa_nw_ioc_attach(struct bfa_ioc *ioc, void *bfa, struct bfa_ioc_cbfn *cbfn)
{
        ioc->bfa        = bfa;
        ioc->cbfn       = cbfn;
        ioc->fcmode     = false;
        ioc->pllinit    = false;
        ioc->dbg_fwsave_once = 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_nw_ioc_detach(struct bfa_ioc *ioc)
{
        bfa_fsm_send_event(ioc, IOC_E_DETACH);

        /* Done with detach, empty the notify_q. */
        INIT_LIST_HEAD(&ioc->notify_q);
}

/**
 * bfa_nw_ioc_pci_init - Setup IOC PCI properties.
 *
 * @pcidev:     PCI device information for this IOC
 */
void
bfa_nw_ioc_pci_init(struct bfa_ioc *ioc, struct bfa_pcidev *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 PCI_DEVICE_ID_BROCADE_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_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 = 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:
                BUG_ON(1);
        }

        /**
         * Set asic specific interfaces.
         */
        if (ioc->asic_gen == BFI_ASIC_GEN_CT)
                bfa_nw_ioc_set_ct_hwif(ioc);
        else {
                WARN_ON(ioc->asic_gen != BFI_ASIC_GEN_CT2);
                bfa_nw_ioc_set_ct2_hwif(ioc);
                bfa_nw_ioc_ct2_poweron(ioc);
        }

        bfa_ioc_map_port(ioc);
        bfa_ioc_reg_init(ioc);
}

/**
 * bfa_nw_ioc_mem_claim - Initialize IOC dma memory
 *
 * @dm_kva:     kernel virtual address of IOC dma memory
 * @dm_pa:      physical address of IOC dma memory
 */
void
bfa_nw_ioc_mem_claim(struct bfa_ioc *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 *) dm_kva;
}

/* Return size of dma memory required. */
u32
bfa_nw_ioc_meminfo(void)
{
        return roundup(sizeof(struct bfi_ioc_attr), BFA_DMA_ALIGN_SZ);
}

void
bfa_nw_ioc_enable(struct bfa_ioc *ioc)
{
        bfa_ioc_stats(ioc, ioc_enables);
        ioc->dbg_fwsave_once = true;

        bfa_fsm_send_event(ioc, IOC_E_ENABLE);
}

void
bfa_nw_ioc_disable(struct bfa_ioc *ioc)
{
        bfa_ioc_stats(ioc, ioc_disables);
        bfa_fsm_send_event(ioc, IOC_E_DISABLE);
}

/* Initialize memory for saving firmware trace. */
void
bfa_nw_ioc_debug_memclaim(struct bfa_ioc *ioc, void *dbg_fwsave)
{
        ioc->dbg_fwsave = dbg_fwsave;
        ioc->dbg_fwsave_len = ioc->iocpf.auto_recover ? BNA_DBG_FWTRC_LEN : 0;
}

static u32
bfa_ioc_smem_pgnum(struct bfa_ioc *ioc, u32 fmaddr)
{
        return PSS_SMEM_PGNUM(ioc->ioc_regs.smem_pg0, fmaddr);
}

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

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

/**
 * bfa_nw_ioc_mbox_queue - Queue a mailbox command request to firmware.
 *
 * @ioc:        IOC instance
 * @cmd:        Mailbox command
 *
 * Waits if mailbox is busy. Responsibility of caller to serialize
 */
bool
bfa_nw_ioc_mbox_queue(struct bfa_ioc *ioc, struct bfa_mbox_cmd *cmd,
                        bfa_mbox_cmd_cbfn_t cbfn, void *cbarg)
{
        struct bfa_ioc_mbox_mod *mod = &ioc->mbox_mod;
        u32                     stat;

        cmd->cbfn = cbfn;
        cmd->cbarg = cbarg;

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

        /**
         * 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 true;
        }

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

        return false;
}

/* Handle mailbox interrupts */
void
bfa_nw_ioc_mbox_isr(struct bfa_ioc *ioc)
{
        struct bfa_ioc_mbox_mod *mod = &ioc->mbox_mod;
        struct bfi_mbmsg 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_nw_ioc_error_isr(struct bfa_ioc *ioc)
{
        bfa_ioc_stats(ioc, ioc_hbfails);
        bfa_ioc_stats_hb_count(ioc, ioc->hb_count);
        bfa_fsm_send_event(ioc, IOC_E_HWERROR);
}

/* return true if IOC is disabled */
bool
bfa_nw_ioc_is_disabled(struct bfa_ioc *ioc)
{
        return bfa_fsm_cmp_state(ioc, bfa_ioc_sm_disabling) ||
                bfa_fsm_cmp_state(ioc, bfa_ioc_sm_disabled);
}

/* return true if IOC is operational */
bool
bfa_nw_ioc_is_operational(struct bfa_ioc *ioc)
{
        return bfa_fsm_cmp_state(ioc, bfa_ioc_sm_op);
}

/* Add to IOC heartbeat failure notification queue. To be used by common
 * modules such as cee, port, diag.
 */
void
bfa_nw_ioc_notify_register(struct bfa_ioc *ioc,
                        struct bfa_ioc_notify *notify)
{
        list_add_tail(&notify->qe, &ioc->notify_q);
}

#define BFA_MFG_NAME "QLogic"
static void
bfa_ioc_get_adapter_attr(struct bfa_ioc *ioc,
                         struct bfa_adapter_attr *ad_attr)
{
        struct bfi_ioc_attr *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));

        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 = bfa_ioc_get_pwwn(ioc);
        bfa_nw_ioc_get_mac(ioc, ad_attr->mac);

        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);
}

static enum bfa_ioc_type
bfa_ioc_get_type(struct bfa_ioc *ioc)
{
        if (ioc->clscode == BFI_PCIFN_CLASS_ETH)
                return BFA_IOC_TYPE_LL;

        BUG_ON(!(ioc->clscode == BFI_PCIFN_CLASS_FC));

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

static void
bfa_ioc_get_adapter_serial_num(struct bfa_ioc *ioc, char *serial_num)
{
        memcpy(serial_num,
                        (void *)ioc->attr->brcd_serialnum,
                        BFA_ADAPTER_SERIAL_NUM_LEN);
}

static void
bfa_ioc_get_adapter_fw_ver(struct bfa_ioc *ioc, char *fw_ver)
{
        memcpy(fw_ver, ioc->attr->fw_version, BFA_VERSION_LEN);
}

static void
bfa_ioc_get_pci_chip_rev(struct bfa_ioc *ioc, char *chip_rev)
{
        BUG_ON(!(chip_rev));

        memset(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';
}

static void
bfa_ioc_get_adapter_optrom_ver(struct bfa_ioc *ioc, char *optrom_ver)
{
        memcpy(optrom_ver, ioc->attr->optrom_version,
                      BFA_VERSION_LEN);
}

static void
bfa_ioc_get_adapter_manufacturer(struct bfa_ioc *ioc, char *manufacturer)
{
        strncpy(manufacturer, BFA_MFG_NAME, BFA_ADAPTER_MFG_NAME_LEN);
}

static void
bfa_ioc_get_adapter_model(struct bfa_ioc *ioc, char *model)
{
        struct bfi_ioc_attr *ioc_attr;

        BUG_ON(!(model));
        memset(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);
}

static enum bfa_ioc_state
bfa_ioc_get_state(struct bfa_ioc *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_nw_ioc_get_attr(struct bfa_ioc *ioc, struct bfa_ioc_attr *ioc_attr)
{
        memset((void *)ioc_attr, 0, sizeof(struct bfa_ioc_attr));

        ioc_attr->state = bfa_ioc_get_state(ioc);
        ioc_attr->port_id = bfa_ioc_portid(ioc);
        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 = bfa_ioc_devid(ioc);
        ioc_attr->pci_attr.pcifn = bfa_ioc_pcifn(ioc);
        ioc_attr->def_fn = bfa_ioc_is_default(ioc);
        bfa_ioc_get_pci_chip_rev(ioc, ioc_attr->pci_attr.chip_rev);
}

/* WWN public */
static u64
bfa_ioc_get_pwwn(struct bfa_ioc *ioc)
{
        return ioc->attr->pwwn;
}

void
bfa_nw_ioc_get_mac(struct bfa_ioc *ioc, u8 *mac)
{
        ether_addr_copy(mac, ioc->attr->mac);
}

/* Firmware failure detected. Start recovery actions. */
static void
bfa_ioc_recover(struct bfa_ioc *ioc)
{
        pr_crit("Heart Beat of IOC has failed\n");
        bfa_ioc_stats(ioc, ioc_hbfails);
        bfa_ioc_stats_hb_count(ioc, ioc->hb_count);
        bfa_fsm_send_event(ioc, IOC_E_HBFAIL);
}

/* BFA IOC PF private functions */

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

static void
bfa_iocpf_disable(struct bfa_ioc *ioc)
{
        bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_DISABLE);
}

static void
bfa_iocpf_fail(struct bfa_ioc *ioc)
{
        bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_FAIL);
}

static void
bfa_iocpf_initfail(struct bfa_ioc *ioc)
{
        bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_INITFAIL);
}

static void
bfa_iocpf_getattrfail(struct bfa_ioc *ioc)
{
        bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_GETATTRFAIL);
}

static void
bfa_iocpf_stop(struct bfa_ioc *ioc)
{
        bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_STOP);
}

void
bfa_nw_iocpf_timeout(struct bfa_ioc *ioc)
{
        enum bfa_iocpf_state iocpf_st;

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

        if (iocpf_st == BFA_IOCPF_HWINIT)
                bfa_ioc_poll_fwinit(ioc);
        else
                bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_TIMEOUT);
}

void

bfa_nw_iocpf_sem_timeout(struct bfa_ioc *ioc)
{
        bfa_ioc_hw_sem_get(ioc);
}

static void
bfa_ioc_poll_fwinit(struct bfa_ioc *ioc)
{
        u32 fwstate = bfa_ioc_get_cur_ioc_fwstate(ioc);

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

        if (ioc->iocpf.poll_time >= BFA_IOC_TOV) {
                bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_TIMEOUT);
        } else {
                ioc->iocpf.poll_time += BFA_IOC_POLL_TOV;
                mod_timer(&ioc->iocpf_timer, jiffies +
                        msecs_to_jiffies(BFA_IOC_POLL_TOV));
        }
}

/*
 *      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    \
        roundup(0x010000 + sizeof(struct bfa_mfg_block), BFA_FLASH_SEG_SZ)

static void
bfa_flash_cb(struct bfa_flash *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 event)
{
        struct bfa_flash *flash = cbarg;

        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 write request.
 */
static void
bfa_flash_write_send(struct bfa_flash *flash)
{
        struct bfi_flash_write_req *msg =
                        (struct bfi_flash_write_req *) flash->mb.msg;
        u32     len;

        msg->type = be32_to_cpu(flash->type);
        msg->instance = flash->instance;
        msg->offset = be32_to_cpu(flash->addr_off + flash->offset);
        len = (flash->residue < BFA_FLASH_DMA_BUF_SZ) ?
               flash->residue : BFA_FLASH_DMA_BUF_SZ;
        msg->length = be32_to_cpu(len);

        /* indicate if it's the last msg of the whole write operation */
        msg->last = (len == flash->residue) ? 1 : 0;

        bfi_h2i_set(msg->mh, BFI_MC_FLASH, BFI_FLASH_H2I_WRITE_REQ,
                    bfa_ioc_portid(flash->ioc));
        bfa_alen_set(&msg->alen, len, flash->dbuf_pa);
        memcpy(flash->dbuf_kva, flash->ubuf + flash->offset, len);
        bfa_nw_ioc_mbox_queue(flash->ioc, &flash->mb, NULL, NULL);

        flash->residue -= len;
        flash->offset += len;
}

/**
 * bfa_flash_read_send - Send flash read request.
 *
 * @cbarg: callback argument
 */
static void
bfa_flash_read_send(void *cbarg)
{
        struct bfa_flash *flash = cbarg;
        struct bfi_flash_read_req *msg =
                        (struct bfi_flash_read_req *) flash->mb.msg;
        u32     len;

        msg->type = be32_to_cpu(flash->type);
        msg->instance = flash->instance;
        msg->offset = be32_to_cpu(flash->addr_off + flash->offset);
        len = (flash->residue < BFA_FLASH_DMA_BUF_SZ) ?
               flash->residue : BFA_FLASH_DMA_BUF_SZ;
        msg->length = be32_to_cpu(len);
        bfi_h2i_set(msg->mh, BFI_MC_FLASH, BFI_FLASH_H2I_READ_REQ,
                    bfa_ioc_portid(flash->ioc));
        bfa_alen_set(&msg->alen, len, flash->dbuf_pa);
        bfa_nw_ioc_mbox_queue(flash->ioc, &flash->mb, NULL, NULL);
}

/**
 * bfa_flash_intr - Process flash response messages upon receiving interrupts.
 *
 * @flasharg: flash structure
 * @msg: message structure
 */
static void
bfa_flash_intr(void *flasharg, struct bfi_mbmsg *msg)
{
        struct bfa_flash *flash = flasharg;
        u32     status;

        union {
                struct bfi_flash_query_rsp *query;
                struct bfi_flash_write_rsp *write;
                struct bfi_flash_read_rsp *read;
                struct bfi_mbmsg   *msg;
        } m;

        m.msg = msg;

        /* receiving response after ioc failure */
        if (!flash->op_busy && msg->mh.msg_id != BFI_FLASH_I2H_EVENT)
                return;

        switch (msg->mh.msg_id) {
        case BFI_FLASH_I2H_QUERY_RSP:
                status = be32_to_cpu(m.query->status);
                if (status == BFA_STATUS_OK) {
                        u32     i;
                        struct bfa_flash_attr *attr, *f;

                        attr = (struct bfa_flash_attr *) flash->ubuf;
                        f = (struct bfa_flash_attr *) flash->dbuf_kva;
                        attr->status = be32_to_cpu(f->status);
                        attr->npart = be32_to_cpu(f->npart);
                        for (i = 0; i < attr->npart; i++) {
                                attr->part[i].part_type =
                                        be32_to_cpu(f->part[i].part_type);
                                attr->part[i].part_instance =
                                        be32_to_cpu(f->part[i].part_instance);
                                attr->part[i].part_off =
                                        be32_to_cpu(f->part[i].part_off);
                                attr->part[i].part_size =
                                        be32_to_cpu(f->part[i].part_size);
                                attr->part[i].part_len =
                                        be32_to_cpu(f->part[i].part_len);
                                attr->part[i].part_status =
                                        be32_to_cpu(f->part[i].part_status);
                        }
                }
                flash->status = status;
                bfa_flash_cb(flash);
                break;
        case BFI_FLASH_I2H_WRITE_RSP:
                status = be32_to_cpu(m.write->status);
                if (status != BFA_STATUS_OK || flash->residue == 0) {
                        flash->status = status;
                        bfa_flash_cb(flash);
                } else
                        bfa_flash_write_send(flash);
                break;
        case BFI_FLASH_I2H_READ_RSP:
                status = be32_to_cpu(m.read->status);
                if (status != BFA_STATUS_OK) {
                        flash->status = status;
                        bfa_flash_cb(flash);
                } else {
                        u32 len = be32_to_cpu(m.read->length);
                        memcpy(flash->ubuf + flash->offset,
                               flash->dbuf_kva, len);
                        flash->residue -= len;
                        flash->offset += len;
                        if (flash->residue == 0) {
                                flash->status = status;
                                bfa_flash_cb(flash);
                        } else
                                bfa_flash_read_send(flash);
                }
                break;
        case BFI_FLASH_I2H_BOOT_VER_RSP:
        case BFI_FLASH_I2H_EVENT:
                break;
        default:
                WARN_ON(1);
        }
}

/*
 * Flash memory info API.
 */
u32
bfa_nw_flash_meminfo(void)
{
        return roundup(BFA_FLASH_DMA_BUF_SZ, BFA_DMA_ALIGN_SZ);
}

/**
 * bfa_nw_flash_attach - Flash attach API.
 *
 * @flash: flash structure
 * @ioc: ioc structure
 * @dev: device structure
 */
void
bfa_nw_flash_attach(struct bfa_flash *flash, struct bfa_ioc *ioc, void *dev)
{
        flash->ioc = ioc;
        flash->cbfn = NULL;
        flash->cbarg = NULL;
        flash->op_busy = 0;

        bfa_nw_ioc_mbox_regisr(flash->ioc, BFI_MC_FLASH, bfa_flash_intr, flash);
        bfa_ioc_notify_init(&flash->ioc_notify, bfa_flash_notify, flash);
        list_add_tail(&flash->ioc_notify.qe, &flash->ioc->notify_q);
}

/**
 * bfa_nw_flash_memclaim - Claim memory for flash
 *
 * @flash: flash structure
 * @dm_kva: pointer to virtual memory address
 * @dm_pa: physical memory address
 */
void
bfa_nw_flash_memclaim(struct bfa_flash *flash, u8 *dm_kva, u64 dm_pa)
{
        flash->dbuf_kva = dm_kva;
        flash->dbuf_pa = dm_pa;
        memset(flash->dbuf_kva, 0, BFA_FLASH_DMA_BUF_SZ);
        dm_kva += roundup(BFA_FLASH_DMA_BUF_SZ, BFA_DMA_ALIGN_SZ);
        dm_pa += roundup(BFA_FLASH_DMA_BUF_SZ, BFA_DMA_ALIGN_SZ);
}

/**
 * bfa_nw_flash_get_attr - Get flash attribute.
 *
 * @flash: flash structure
 * @attr: flash attribute structure
 * @cbfn: callback function
 * @cbarg: callback argument
 *
 * Return status.
 */
enum bfa_status
bfa_nw_flash_get_attr(struct bfa_flash *flash, struct bfa_flash_attr *attr,
                      bfa_cb_flash cbfn, void *cbarg)
{
        struct bfi_flash_query_req *msg =
                        (struct bfi_flash_query_req *) flash->mb.msg;

        if (!bfa_nw_ioc_is_operational(flash->ioc))
                return BFA_STATUS_IOC_NON_OP;

        if (flash->op_busy)
                return BFA_STATUS_DEVBUSY;

        flash->op_busy = 1;
        flash->cbfn = cbfn;
        flash->cbarg = cbarg;
        flash->ubuf = (u8 *) attr;

        bfi_h2i_set(msg->mh, BFI_MC_FLASH, BFI_FLASH_H2I_QUERY_REQ,
                    bfa_ioc_portid(flash->ioc));
        bfa_alen_set(&msg->alen, sizeof(struct bfa_flash_attr), flash->dbuf_pa);
        bfa_nw_ioc_mbox_queue(flash->ioc, &flash->mb, NULL, NULL);

        return BFA_STATUS_OK;
}

/**
 * bfa_nw_flash_update_part - Update flash partition.
 *
 * @flash: flash structure
 * @type: flash partition type
 * @instance: flash partition instance
 * @buf: update data buffer
 * @len: data buffer length
 * @offset: offset relative to the partition starting address
 * @cbfn: callback function
 * @cbarg: callback argument
 *
 * Return status.
 */
enum bfa_status
bfa_nw_flash_update_part(struct bfa_flash *flash, u32 type, u8 instance,
                         void *buf, u32 len, u32 offset,
                         bfa_cb_flash cbfn, void *cbarg)
{
        if (!bfa_nw_ioc_is_operational(flash->ioc))
                return BFA_STATUS_IOC_NON_OP;

        /*
         * 'len' must be in word (4-byte) boundary
         */
        if (!len || (len & 0x03))
                return BFA_STATUS_FLASH_BAD_LEN;

        if (type == BFA_FLASH_PART_MFG)
                return BFA_STATUS_EINVAL;

        if (flash->op_busy)
                return BFA_STATUS_DEVBUSY;

        flash->op_busy = 1;
        flash->cbfn = cbfn;
        flash->cbarg = cbarg;
        flash->type = type;
        flash->instance = instance;
        flash->residue = len;
        flash->offset = 0;
        flash->addr_off = offset;
        flash->ubuf = buf;

        bfa_flash_write_send(flash);

        return BFA_STATUS_OK;
}

/**
 * bfa_nw_flash_read_part - Read flash partition.
 *
 * @flash: flash structure
 * @type: flash partition type
 * @instance: flash partition instance
 * @buf: read data buffer
 * @len: data buffer length
 * @offset: offset relative to the partition starting address
 * @cbfn: callback function
 * @cbarg: callback argument
 *
 * Return status.
 */
enum bfa_status
bfa_nw_flash_read_part(struct bfa_flash *flash, u32 type, u8 instance,
                       void *buf, u32 len, u32 offset,
                       bfa_cb_flash cbfn, void *cbarg)
{
        if (!bfa_nw_ioc_is_operational(flash->ioc))
                return BFA_STATUS_IOC_NON_OP;

        /*
         * 'len' must be in word (4-byte) boundary
         */
        if (!len || (len & 0x03))
                return BFA_STATUS_FLASH_BAD_LEN;

        if (flash->op_busy)
                return BFA_STATUS_DEVBUSY;

        flash->op_busy = 1;
        flash->cbfn = cbfn;
        flash->cbarg = cbarg;
        flash->type = type;
        flash->instance = instance;
        flash->residue = len;
        flash->offset = 0;
        flash->addr_off = offset;
        flash->ubuf = buf;

        bfa_flash_read_send(flash);

        return BFA_STATUS_OK;
}