staging: brcm80211: Changed comments

[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / staging / brcm80211 / brcmsmac / bmac.c

/*
 * Copyright (c) 2010 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#include <linux/pci.h>
#include <net/mac80211.h>

#include <brcm_hw_ids.h>
#include <aiutils.h>
#include <chipcommon.h>
#include "types.h"
#include "rate.h"
#include "phy/phy_hal.h"
#include "channel.h"
#include "main.h"
#include "ucode_loader.h"
#include "mac80211_if.h"
#include "bmac.h"

#define TIMER_INTERVAL_WATCHDOG_BMAC    1000    /* watchdog timer, in unit of ms */

#define SYNTHPU_DLY_APHY_US     3700    /* a phy synthpu_dly time in us */
#define SYNTHPU_DLY_BPHY_US     1050    /* b/g phy synthpu_dly time in us, default */
#define SYNTHPU_DLY_NPHY_US     2048    /* n phy REV3 synthpu_dly time in us, default */
#define SYNTHPU_DLY_LPPHY_US    300     /* lpphy synthpu_dly time in us */

#define SYNTHPU_DLY_PHY_US_QT   100     /* QT synthpu_dly time in us */

#ifndef BMAC_DUP_TO_REMOVE
#define WLC_RM_WAIT_TX_SUSPEND          4       /* Wait Tx Suspend */

#define ANTCNT                  10      /* vanilla M_MAX_ANTCNT value */

#endif                          /* BMAC_DUP_TO_REMOVE */

#define DMAREG(wlc_hw, direction, fifonum) \
        ((direction == DMA_TX) ? \
                (void *)&(wlc_hw->regs->fifo64regs[fifonum].dmaxmt) : \
                (void *)&(wlc_hw->regs->fifo64regs[fifonum].dmarcv))

#define APHY_SLOT_TIME          9
#define BPHY_SLOT_TIME          20

/*
 * The following table lists the buffer memory allocated to xmt fifos in HW.
 * the size is in units of 256bytes(one block), total size is HW dependent
 * ucode has default fifo partition, sw can overwrite if necessary
 *
 * This is documented in twiki under the topic UcodeTxFifo. Please ensure
 * the twiki is updated before making changes.
 */

#define XMTFIFOTBL_STARTREV     20      /* Starting corerev for the fifo size table */

static u16 xmtfifo_sz[][NFIFO] = {
        {20, 192, 192, 21, 17, 5},      /* corerev 20: 5120, 49152, 49152, 5376, 4352, 1280 */
        {9, 58, 22, 14, 14, 5}, /* corerev 21: 2304, 14848, 5632, 3584, 3584, 1280 */
        {20, 192, 192, 21, 17, 5},      /* corerev 22: 5120, 49152, 49152, 5376, 4352, 1280 */
        {20, 192, 192, 21, 17, 5},      /* corerev 23: 5120, 49152, 49152, 5376, 4352, 1280 */
        {9, 58, 22, 14, 14, 5}, /* corerev 24: 2304, 14848, 5632, 3584, 3584, 1280 */
};

static void brcms_b_clkctl_clk(struct brcms_c_hw_info *wlc, uint mode);
static void brcms_b_coreinit(struct brcms_c_info *wlc);

/* used by wlc_wakeucode_init() */
static void brcms_c_write_inits(struct brcms_c_hw_info *wlc_hw,
                            const struct d11init *inits);
static void brcms_ucode_write(struct brcms_c_hw_info *wlc_hw, const u32 ucode[],
                            const uint nbytes);
static void brcms_ucode_download(struct brcms_c_hw_info *wlc);
static void brcms_c_ucode_txant_set(struct brcms_c_hw_info *wlc_hw);

/* used by brcms_c_dpc() */
static bool brcms_b_dotxstatus(struct brcms_c_hw_info *wlc, tx_status_t *txs,
                                u32 s2);
static bool brcms_b_txstatus(struct brcms_c_hw_info *wlc, bool bound,
                             bool *fatal);
static bool brcms_b_recv(struct brcms_c_hw_info *wlc_hw, uint fifo, bool bound);

/* used by brcms_c_down() */
static void brcms_c_flushqueues(struct brcms_c_info *wlc);

static void brcms_c_write_mhf(struct brcms_c_hw_info *wlc_hw, u16 *mhfs);
static void brcms_c_mctrl_reset(struct brcms_c_hw_info *wlc_hw);
static void brcms_b_corerev_fifofixup(struct brcms_c_hw_info *wlc_hw);
static bool brcms_b_tx_fifo_suspended(struct brcms_c_hw_info *wlc_hw,
                                       uint tx_fifo);
static void brcms_b_tx_fifo_suspend(struct brcms_c_hw_info *wlc_hw,
                                    uint tx_fifo);
static void brcms_b_tx_fifo_resume(struct brcms_c_hw_info *wlc_hw,
                                   uint tx_fifo);

/* Low Level Prototypes */
static int brcms_b_bandtype(struct brcms_c_hw_info *wlc_hw);
static void brcms_b_info_init(struct brcms_c_hw_info *wlc_hw);
static void brcms_b_xtal(struct brcms_c_hw_info *wlc_hw, bool want);
static u16 brcms_b_read_objmem(struct brcms_c_hw_info *wlc_hw, uint offset,
                                   u32 sel);
static void brcms_b_write_objmem(struct brcms_c_hw_info *wlc_hw, uint offset,
                                  u16 v, u32 sel);
static void brcms_b_core_phy_clk(struct brcms_c_hw_info *wlc_hw, bool clk);
static bool brcms_b_attach_dmapio(struct brcms_c_info *wlc, uint j, bool wme);
static void brcms_b_detach_dmapio(struct brcms_c_hw_info *wlc_hw);
static void brcms_c_ucode_bsinit(struct brcms_c_hw_info *wlc_hw);
static bool brcms_c_validboardtype(struct brcms_c_hw_info *wlc);
static bool brcms_c_isgoodchip(struct brcms_c_hw_info *wlc_hw);
static bool brcms_b_validate_chip_access(struct brcms_c_hw_info *wlc_hw);
static char *brcms_c_get_macaddr(struct brcms_c_hw_info *wlc_hw);
static void brcms_c_mhfdef(struct brcms_c_info *wlc, u16 *mhfs, u16 mhf2_init);
static void brcms_c_mctrl_write(struct brcms_c_hw_info *wlc_hw);
static void brcms_b_mute(struct brcms_c_hw_info *wlc_hw, bool want,
                         mbool flags);
static void brcms_c_ucode_mute_override_set(struct brcms_c_hw_info *wlc_hw);
static void brcms_c_ucode_mute_override_clear(struct brcms_c_hw_info *wlc_hw);
static u32 brcms_c_wlintrsoff(struct brcms_c_info *wlc);
static void brcms_c_wlintrsrestore(struct brcms_c_info *wlc, u32 macintmask);
static void brcms_c_gpio_init(struct brcms_c_info *wlc);
static void brcms_c_write_hw_bcntemplate0(struct brcms_c_hw_info *wlc_hw,
                                          void *bcn, int len);
static void brcms_c_write_hw_bcntemplate1(struct brcms_c_hw_info *wlc_hw,
                                          void *bcn, int len);
static void brcms_b_bsinit(struct brcms_c_info *wlc, chanspec_t chanspec);
static u32 brcms_c_setband_inact(struct brcms_c_info *wlc, uint bandunit);
static void brcms_b_setband(struct brcms_c_hw_info *wlc_hw, uint bandunit,
                             chanspec_t chanspec);
static void brcms_b_update_slot_timing(struct brcms_c_hw_info *wlc_hw,
                                        bool shortslot);
static void brcms_upd_ofdm_pctl1_table(struct brcms_c_hw_info *wlc_hw);
static u16 brcms_b_ofdm_ratetable_offset(struct brcms_c_hw_info *wlc_hw,
                                             u8 rate);

/* === Low Level functions === */

void brcms_b_set_shortslot(struct brcms_c_hw_info *wlc_hw, bool shortslot)
{
        wlc_hw->shortslot = shortslot;

        if (BAND_2G(brcms_b_bandtype(wlc_hw)) && wlc_hw->up) {
                brcms_c_suspend_mac_and_wait(wlc_hw->wlc);
                brcms_b_update_slot_timing(wlc_hw, shortslot);
                brcms_c_enable_mac(wlc_hw->wlc);
        }
}

/*
 * Update the slot timing for standard 11b/g (20us slots)
 * or shortslot 11g (9us slots)
 * The PSM needs to be suspended for this call.
 */
static void brcms_b_update_slot_timing(struct brcms_c_hw_info *wlc_hw,
                                        bool shortslot)
{
        d11regs_t *regs;

        regs = wlc_hw->regs;

        if (shortslot) {
                /* 11g short slot: 11a timing */
                W_REG(&regs->ifs_slot, 0x0207); /* APHY_SLOT_TIME */
                brcms_b_write_shm(wlc_hw, M_DOT11_SLOT, APHY_SLOT_TIME);
        } else {
                /* 11g long slot: 11b timing */
                W_REG(&regs->ifs_slot, 0x0212); /* BPHY_SLOT_TIME */
                brcms_b_write_shm(wlc_hw, M_DOT11_SLOT, BPHY_SLOT_TIME);
        }
}

static void WLBANDINITFN(brcms_c_ucode_bsinit) (struct brcms_c_hw_info *wlc_hw)
{
        struct wiphy *wiphy = wlc_hw->wlc->wiphy;

        /* init microcode host flags */
        brcms_c_write_mhf(wlc_hw, wlc_hw->band->mhfs);

        /* do band-specific ucode IHR, SHM, and SCR inits */
        if (D11REV_IS(wlc_hw->corerev, 23)) {
                if (WLCISNPHY(wlc_hw->band)) {
                        brcms_c_write_inits(wlc_hw, d11n0bsinitvals16);
                } else {
                        wiphy_err(wiphy, "%s: wl%d: unsupported phy in corerev"
                                  " %d\n", __func__, wlc_hw->unit,
                                  wlc_hw->corerev);
                }
        } else {
                if (D11REV_IS(wlc_hw->corerev, 24)) {
                        if (WLCISLCNPHY(wlc_hw->band)) {
                                brcms_c_write_inits(wlc_hw,
                                                    d11lcn0bsinitvals24);
                        } else
                                wiphy_err(wiphy, "%s: wl%d: unsupported phy in"
                                          " core rev %d\n", __func__,
                                          wlc_hw->unit, wlc_hw->corerev);
                } else {
                        wiphy_err(wiphy, "%s: wl%d: unsupported corerev %d\n",
                                __func__, wlc_hw->unit, wlc_hw->corerev);
                }
        }
}

/* switch to new band but leave it inactive */
static u32 WLBANDINITFN(brcms_c_setband_inact) (struct brcms_c_info *wlc,
                                            uint bandunit)
{
        struct brcms_c_hw_info *wlc_hw = wlc->hw;
        u32 macintmask;

        BCMMSG(wlc->wiphy, "wl%d\n", wlc_hw->unit);

        WARN_ON((R_REG(&wlc_hw->regs->maccontrol) & MCTL_EN_MAC) != 0);

        /* disable interrupts */
        macintmask = brcms_intrsoff(wlc->wl);

        /* radio off */
        wlc_phy_switch_radio(wlc_hw->band->pi, OFF);

        brcms_b_core_phy_clk(wlc_hw, OFF);

        brcms_c_setxband(wlc_hw, bandunit);

        return macintmask;
}

/* Process received frames */
/*
 * Return true if more frames need to be processed. false otherwise.
 * Param 'bound' indicates max. # frames to process before break out.
 */
static bool
brcms_b_recv(struct brcms_c_hw_info *wlc_hw, uint fifo, bool bound)
{
        struct sk_buff *p;
        struct sk_buff *head = NULL;
        struct sk_buff *tail = NULL;
        uint n = 0;
        uint bound_limit = bound ? wlc_hw->wlc->pub->tunables->rxbnd : -1;
        wlc_d11rxhdr_t *wlc_rxhdr = NULL;

        BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
        /* gather received frames */
        while ((p = dma_rx(wlc_hw->di[fifo]))) {

                if (!tail)
                        head = tail = p;
                else {
                        tail->prev = p;
                        tail = p;
                }

                /* !give others some time to run! */
                if (++n >= bound_limit)
                        break;
        }

        /* post more rbufs */
        dma_rxfill(wlc_hw->di[fifo]);

        /* process each frame */
        while ((p = head) != NULL) {
                head = head->prev;
                p->prev = NULL;

                wlc_rxhdr = (wlc_d11rxhdr_t *) p->data;

                /* compute the RSSI from d11rxhdr and record it in wlc_rxd11hr */
                wlc_phy_rssi_compute(wlc_hw->band->pi, wlc_rxhdr);

                brcms_c_recv(wlc_hw->wlc, p);
        }

        return n >= bound_limit;
}

/* second-level interrupt processing
 *   Return true if another dpc needs to be re-scheduled. false otherwise.
 *   Param 'bounded' indicates if applicable loops should be bounded.
 */
bool brcms_c_dpc(struct brcms_c_info *wlc, bool bounded)
{
        u32 macintstatus;
        struct brcms_c_hw_info *wlc_hw = wlc->hw;
        d11regs_t *regs = wlc_hw->regs;
        bool fatal = false;
        struct wiphy *wiphy = wlc->wiphy;

        if (DEVICEREMOVED(wlc)) {
                wiphy_err(wiphy, "wl%d: %s: dead chip\n", wlc_hw->unit,
                          __func__);
                brcms_down(wlc->wl);
                return false;
        }

        /* grab and clear the saved software intstatus bits */
        macintstatus = wlc->macintstatus;
        wlc->macintstatus = 0;

        BCMMSG(wlc->wiphy, "wl%d: macintstatus 0x%x\n",
               wlc_hw->unit, macintstatus);

        WARN_ON(macintstatus & MI_PRQ); /* PRQ Interrupt in non-MBSS */

        /* BCN template is available */
        /* ZZZ: Use AP_ACTIVE ? */
        if (AP_ENAB(wlc->pub) && (!APSTA_ENAB(wlc->pub))
            && (macintstatus & MI_BCNTPL)) {
                brcms_c_update_beacon(wlc);
        }

        /* PMQ entry addition */
        if (macintstatus & MI_PMQ) {
        }

        /* tx status */
        if (macintstatus & MI_TFS) {
                if (brcms_b_txstatus(wlc->hw, bounded, &fatal))
                        wlc->macintstatus |= MI_TFS;
                if (fatal) {
                        wiphy_err(wiphy, "MI_TFS: fatal\n");
                        goto fatal;
                }
        }

        if (macintstatus & (MI_TBTT | MI_DTIM_TBTT))
                brcms_c_tbtt(wlc);

        /* ATIM window end */
        if (macintstatus & MI_ATIMWINEND) {
                BCMMSG(wlc->wiphy, "end of ATIM window\n");
                OR_REG(&regs->maccommand, wlc->qvalid);
                wlc->qvalid = 0;
        }

        /* received data or control frame, MI_DMAINT is indication of RX_FIFO interrupt */
        if (macintstatus & MI_DMAINT)
                if (brcms_b_recv(wlc_hw, RX_FIFO, bounded))
                        wlc->macintstatus |= MI_DMAINT;

        /* TX FIFO suspend/flush completion */
        if (macintstatus & MI_TXSTOP)
                if (brcms_b_tx_fifo_suspended(wlc_hw, TX_DATA_FIFO));

        /* noise sample collected */
        if (macintstatus & MI_BG_NOISE) {
                wlc_phy_noise_sample_intr(wlc_hw->band->pi);
        }

        if (macintstatus & MI_GP0) {
                wiphy_err(wiphy, "wl%d: PSM microcode watchdog fired at %d "
                        "(seconds). Resetting.\n", wlc_hw->unit, wlc_hw->now);

                printk_once("%s : PSM Watchdog, chipid 0x%x, chiprev 0x%x\n",
                                        __func__, wlc_hw->sih->chip,
                                        wlc_hw->sih->chiprev);
                /* big hammer */
                brcms_init(wlc->wl);
        }

        /* gptimer timeout */
        if (macintstatus & MI_TO) {
                W_REG(&regs->gptimer, 0);
        }

        if (macintstatus & MI_RFDISABLE) {
                BCMMSG(wlc->wiphy, "wl%d: BMAC Detected a change on the"
                       " RF Disable Input\n", wlc_hw->unit);
                brcms_rfkill_set_hw_state(wlc->wl);
        }

        /* send any enq'd tx packets. Just makes sure to jump start tx */
        if (!pktq_empty(&wlc->pkt_queue->q))
                brcms_c_send_q(wlc);

        /* it isn't done and needs to be resched if macintstatus is non-zero */
        return wlc->macintstatus != 0;

 fatal:
        brcms_init(wlc->wl);
        return wlc->macintstatus != 0;
}

/* common low-level watchdog code */
void brcms_b_watchdog(void *arg)
{
        struct brcms_c_info *wlc = (struct brcms_c_info *) arg;
        struct brcms_c_hw_info *wlc_hw = wlc->hw;

        BCMMSG(wlc->wiphy, "wl%d\n", wlc_hw->unit);

        if (!wlc_hw->up)
                return;

        /* increment second count */
        wlc_hw->now++;

        /* Check for FIFO error interrupts */
        brcms_b_fifoerrors(wlc_hw);

        /* make sure RX dma has buffers */
        dma_rxfill(wlc->hw->di[RX_FIFO]);

        wlc_phy_watchdog(wlc_hw->band->pi);
}

void
brcms_b_set_chanspec(struct brcms_c_hw_info *wlc_hw, chanspec_t chanspec,
                      bool mute, struct txpwr_limits *txpwr)
{
        uint bandunit;

        BCMMSG(wlc_hw->wlc->wiphy, "wl%d: 0x%x\n", wlc_hw->unit, chanspec);

        wlc_hw->chanspec = chanspec;

        /* Switch bands if necessary */
        if (NBANDS_HW(wlc_hw) > 1) {
                bandunit = CHSPEC_WLCBANDUNIT(chanspec);
                if (wlc_hw->band->bandunit != bandunit) {
                        /* brcms_b_setband disables other bandunit,
                         *  use light band switch if not up yet
                         */
                        if (wlc_hw->up) {
                                wlc_phy_chanspec_radio_set(wlc_hw->
                                                           bandstate[bandunit]->
                                                           pi, chanspec);
                                brcms_b_setband(wlc_hw, bandunit, chanspec);
                        } else {
                                brcms_c_setxband(wlc_hw, bandunit);
                        }
                }
        }

        wlc_phy_initcal_enable(wlc_hw->band->pi, !mute);

        if (!wlc_hw->up) {
                if (wlc_hw->clk)
                        wlc_phy_txpower_limit_set(wlc_hw->band->pi, txpwr,
                                                  chanspec);
                wlc_phy_chanspec_radio_set(wlc_hw->band->pi, chanspec);
        } else {
                wlc_phy_chanspec_set(wlc_hw->band->pi, chanspec);
                wlc_phy_txpower_limit_set(wlc_hw->band->pi, txpwr, chanspec);

                /* Update muting of the channel */
                brcms_b_mute(wlc_hw, mute, 0);
        }
}

int brcms_b_state_get(struct brcms_c_hw_info *wlc_hw, brcms_b_state_t *state)
{
        state->machwcap = wlc_hw->machwcap;

        return 0;
}

static bool brcms_b_attach_dmapio(struct brcms_c_info *wlc, uint j, bool wme)
{
        uint i;
        char name[8];
        /* ucode host flag 2 needed for pio mode, independent of band and fifo */
        u16 pio_mhf2 = 0;
        struct brcms_c_hw_info *wlc_hw = wlc->hw;
        uint unit = wlc_hw->unit;
        wlc_tunables_t *tune = wlc->pub->tunables;
        struct wiphy *wiphy = wlc->wiphy;

        /* name and offsets for dma_attach */
        snprintf(name, sizeof(name), "wl%d", unit);

        if (wlc_hw->di[0] == 0) {       /* Init FIFOs */
                uint addrwidth;
                int dma_attach_err = 0;
                /* Find out the DMA addressing capability and let OS know
                 * All the channels within one DMA core have 'common-minimum' same
                 * capability
                 */
                addrwidth =
                    dma_addrwidth(wlc_hw->sih, DMAREG(wlc_hw, DMA_TX, 0));

                if (!wl_alloc_dma_resources(wlc_hw->wlc->wl, addrwidth)) {
                        wiphy_err(wiphy, "wl%d: wlc_attach: alloc_dma_"
                                  "resources failed\n", unit);
                        return false;
                }

                /*
                 * FIFO 0
                 * TX: TX_AC_BK_FIFO (TX AC Background data packets)
                 * RX: RX_FIFO (RX data packets)
                 */
                wlc_hw->di[0] = dma_attach(name, wlc_hw->sih,
                                           (wme ? DMAREG(wlc_hw, DMA_TX, 0) :
                                            NULL), DMAREG(wlc_hw, DMA_RX, 0),
                                           (wme ? tune->ntxd : 0), tune->nrxd,
                                           tune->rxbufsz, -1, tune->nrxbufpost,
                                           WL_HWRXOFF, &brcm_msg_level);
                dma_attach_err |= (NULL == wlc_hw->di[0]);

                /*
                 * FIFO 1
                 * TX: TX_AC_BE_FIFO (TX AC Best-Effort data packets)
                 *   (legacy) TX_DATA_FIFO (TX data packets)
                 * RX: UNUSED
                 */
                wlc_hw->di[1] = dma_attach(name, wlc_hw->sih,
                                           DMAREG(wlc_hw, DMA_TX, 1), NULL,
                                           tune->ntxd, 0, 0, -1, 0, 0,
                                           &brcm_msg_level);
                dma_attach_err |= (NULL == wlc_hw->di[1]);

                /*
                 * FIFO 2
                 * TX: TX_AC_VI_FIFO (TX AC Video data packets)
                 * RX: UNUSED
                 */
                wlc_hw->di[2] = dma_attach(name, wlc_hw->sih,
                                           DMAREG(wlc_hw, DMA_TX, 2), NULL,
                                           tune->ntxd, 0, 0, -1, 0, 0,
                                           &brcm_msg_level);
                dma_attach_err |= (NULL == wlc_hw->di[2]);
                /*
                 * FIFO 3
                 * TX: TX_AC_VO_FIFO (TX AC Voice data packets)
                 *   (legacy) TX_CTL_FIFO (TX control & mgmt packets)
                 */
                wlc_hw->di[3] = dma_attach(name, wlc_hw->sih,
                                           DMAREG(wlc_hw, DMA_TX, 3),
                                           NULL, tune->ntxd, 0, 0, -1,
                                           0, 0, &brcm_msg_level);
                dma_attach_err |= (NULL == wlc_hw->di[3]);
/* Cleaner to leave this as if with AP defined */

                if (dma_attach_err) {
                        wiphy_err(wiphy, "wl%d: wlc_attach: dma_attach failed"
                                  "\n", unit);
                        return false;
                }

                /* get pointer to dma engine tx flow control variable */
                for (i = 0; i < NFIFO; i++)
                        if (wlc_hw->di[i])
                                wlc_hw->txavail[i] =
                                    (uint *) dma_getvar(wlc_hw->di[i],
                                                        "&txavail");
        }

        /* initial ucode host flags */
        brcms_c_mhfdef(wlc, wlc_hw->band->mhfs, pio_mhf2);

        return true;
}

static void brcms_b_detach_dmapio(struct brcms_c_hw_info *wlc_hw)
{
        uint j;

        for (j = 0; j < NFIFO; j++) {
                if (wlc_hw->di[j]) {
                        dma_detach(wlc_hw->di[j]);
                        wlc_hw->di[j] = NULL;
                }
        }
}

/* low level attach
 *    run backplane attach, init nvram
 *    run phy attach
 *    initialize software state for each core and band
 *    put the whole chip in reset(driver down state), no clock
 */
int brcms_b_attach(struct brcms_c_info *wlc, u16 vendor, u16 device, uint unit,
                    bool piomode, void *regsva, uint bustype, void *btparam)
{
        struct brcms_c_hw_info *wlc_hw;
        d11regs_t *regs;
        char *macaddr = NULL;
        char *vars;
        uint err = 0;
        uint j;
        bool wme = false;
        shared_phy_params_t sha_params;
        struct wiphy *wiphy = wlc->wiphy;

        BCMMSG(wlc->wiphy, "wl%d: vendor 0x%x device 0x%x\n", unit, vendor,
                device);

        wme = true;

        wlc_hw = wlc->hw;
        wlc_hw->wlc = wlc;
        wlc_hw->unit = unit;
        wlc_hw->band = wlc_hw->bandstate[0];
        wlc_hw->_piomode = piomode;

        /* populate struct brcms_c_hw_info with default values  */
        brcms_b_info_init(wlc_hw);

        /*
         * Do the hardware portion of the attach.
         * Also initialize software state that depends on the particular hardware
         * we are running.
         */
        wlc_hw->sih = ai_attach(regsva, bustype, btparam,
                                &wlc_hw->vars, &wlc_hw->vars_size);
        if (wlc_hw->sih == NULL) {
                wiphy_err(wiphy, "wl%d: brcms_b_attach: si_attach failed\n",
                          unit);
                err = 11;
                goto fail;
        }
        vars = wlc_hw->vars;

        /*
         * Get vendid/devid nvram overwrites, which could be different
         * than those the BIOS recognizes for devices on PCMCIA_BUS,
         * SDIO_BUS, and SROMless devices on PCI_BUS.
         */
#ifdef BCMBUSTYPE
        bustype = BCMBUSTYPE;
#endif
        if (bustype != SI_BUS) {
                char *var;

                var = getvar(vars, "vendid");
                if (var) {
                        vendor = (u16) simple_strtoul(var, NULL, 0);
                        wiphy_err(wiphy, "Overriding vendor id = 0x%x\n",
                                  vendor);
                }
                var = getvar(vars, "devid");
                if (var) {
                        u16 devid = (u16) simple_strtoul(var, NULL, 0);
                        if (devid != 0xffff) {
                                device = devid;
                                wiphy_err(wiphy, "Overriding device id = 0x%x"
                                          "\n", device);
                        }
                }

                /* verify again the device is supported */
                if (!brcms_c_chipmatch(vendor, device)) {
                        wiphy_err(wiphy, "wl%d: brcms_b_attach: Unsupported "
                                "vendor/device (0x%x/0x%x)\n",
                                 unit, vendor, device);
                        err = 12;
                        goto fail;
                }
        }

        wlc_hw->vendorid = vendor;
        wlc_hw->deviceid = device;

        /* set bar0 window to point at D11 core */
        wlc_hw->regs = (d11regs_t *) ai_setcore(wlc_hw->sih, D11_CORE_ID, 0);
        wlc_hw->corerev = ai_corerev(wlc_hw->sih);

        regs = wlc_hw->regs;

        wlc->regs = wlc_hw->regs;

        /* validate chip, chiprev and corerev */
        if (!brcms_c_isgoodchip(wlc_hw)) {
                err = 13;
                goto fail;
        }

        /* initialize power control registers */
        ai_clkctl_init(wlc_hw->sih);

        /* request fastclock and force fastclock for the rest of attach
         * bring the d11 core out of reset.
         *   For PMU chips, the first wlc_clkctl_clk is no-op since core-clk is still false;
         *   But it will be called again inside wlc_corereset, after d11 is out of reset.
         */
        brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
        brcms_b_corereset(wlc_hw, WLC_USE_COREFLAGS);

        if (!brcms_b_validate_chip_access(wlc_hw)) {
                wiphy_err(wiphy, "wl%d: brcms_b_attach: validate_chip_access "
                        "failed\n", unit);
                err = 14;
                goto fail;
        }

        /* get the board rev, used just below */
        j = getintvar(vars, "boardrev");
        /* promote srom boardrev of 0xFF to 1 */
        if (j == BOARDREV_PROMOTABLE)
                j = BOARDREV_PROMOTED;
        wlc_hw->boardrev = (u16) j;
        if (!brcms_c_validboardtype(wlc_hw)) {
                wiphy_err(wiphy, "wl%d: brcms_b_attach: Unsupported Broadcom "
                        "board type (0x%x)" " or revision level (0x%x)\n",
                         unit, wlc_hw->sih->boardtype, wlc_hw->boardrev);
                err = 15;
                goto fail;
        }
        wlc_hw->sromrev = (u8) getintvar(vars, "sromrev");
        wlc_hw->boardflags = (u32) getintvar(vars, "boardflags");
        wlc_hw->boardflags2 = (u32) getintvar(vars, "boardflags2");

        if (wlc_hw->boardflags & BFL_NOPLLDOWN)
                brcms_b_pllreq(wlc_hw, true, WLC_PLLREQ_SHARED);

        if ((wlc_hw->sih->bustype == PCI_BUS)
            && (ai_pci_war16165(wlc_hw->sih)))
                wlc->war16165 = true;

        /* check device id(srom, nvram etc.) to set bands */
        if (wlc_hw->deviceid == BCM43224_D11N_ID ||
            wlc_hw->deviceid == BCM43224_D11N_ID_VEN1) {
                /* Dualband boards */
                wlc_hw->_nbands = 2;
        } else
                wlc_hw->_nbands = 1;

        if ((wlc_hw->sih->chip == BCM43225_CHIP_ID))
                wlc_hw->_nbands = 1;

        /* BMAC_NOTE: remove init of pub values when brcms_c_attach()
         * unconditionally does the init of these values
         */
        wlc->vendorid = wlc_hw->vendorid;
        wlc->deviceid = wlc_hw->deviceid;
        wlc->pub->sih = wlc_hw->sih;
        wlc->pub->corerev = wlc_hw->corerev;
        wlc->pub->sromrev = wlc_hw->sromrev;
        wlc->pub->boardrev = wlc_hw->boardrev;
        wlc->pub->boardflags = wlc_hw->boardflags;
        wlc->pub->boardflags2 = wlc_hw->boardflags2;
        wlc->pub->_nbands = wlc_hw->_nbands;

        wlc_hw->physhim = wlc_phy_shim_attach(wlc_hw, wlc->wl, wlc);

        if (wlc_hw->physhim == NULL) {
                wiphy_err(wiphy, "wl%d: brcms_b_attach: wlc_phy_shim_attach "
                        "failed\n", unit);
                err = 25;
                goto fail;
        }

        /* pass all the parameters to wlc_phy_shared_attach in one struct */
        sha_params.sih = wlc_hw->sih;
        sha_params.physhim = wlc_hw->physhim;
        sha_params.unit = unit;
        sha_params.corerev = wlc_hw->corerev;
        sha_params.vars = vars;
        sha_params.vid = wlc_hw->vendorid;
        sha_params.did = wlc_hw->deviceid;
        sha_params.chip = wlc_hw->sih->chip;
        sha_params.chiprev = wlc_hw->sih->chiprev;
        sha_params.chippkg = wlc_hw->sih->chippkg;
        sha_params.sromrev = wlc_hw->sromrev;
        sha_params.boardtype = wlc_hw->sih->boardtype;
        sha_params.boardrev = wlc_hw->boardrev;
        sha_params.boardvendor = wlc_hw->sih->boardvendor;
        sha_params.boardflags = wlc_hw->boardflags;
        sha_params.boardflags2 = wlc_hw->boardflags2;
        sha_params.bustype = wlc_hw->sih->bustype;
        sha_params.buscorerev = wlc_hw->sih->buscorerev;

        /* alloc and save pointer to shared phy state area */
        wlc_hw->phy_sh = wlc_phy_shared_attach(&sha_params);
        if (!wlc_hw->phy_sh) {
                err = 16;
                goto fail;
        }

        /* initialize software state for each core and band */
        for (j = 0; j < NBANDS_HW(wlc_hw); j++) {
                /*
                 * band0 is always 2.4Ghz
                 * band1, if present, is 5Ghz
                 */

                /* So if this is a single band 11a card, use band 1 */
                if (IS_SINGLEBAND_5G(wlc_hw->deviceid))
                        j = BAND_5G_INDEX;

                brcms_c_setxband(wlc_hw, j);

                wlc_hw->band->bandunit = j;
                wlc_hw->band->bandtype = j ? WLC_BAND_5G : WLC_BAND_2G;
                wlc->band->bandunit = j;
                wlc->band->bandtype = j ? WLC_BAND_5G : WLC_BAND_2G;
                wlc->core->coreidx = ai_coreidx(wlc_hw->sih);

                wlc_hw->machwcap = R_REG(&regs->machwcap);
                wlc_hw->machwcap_backup = wlc_hw->machwcap;

                /* init tx fifo size */
                wlc_hw->xmtfifo_sz =
                    xmtfifo_sz[(wlc_hw->corerev - XMTFIFOTBL_STARTREV)];

                /* Get a phy for this band */
                wlc_hw->band->pi = wlc_phy_attach(wlc_hw->phy_sh,
                        (void *)regs, brcms_b_bandtype(wlc_hw), vars,
                        wlc->wiphy);
                if (wlc_hw->band->pi == NULL) {
                        wiphy_err(wiphy, "wl%d: brcms_b_attach: wlc_phy_"
                                  "attach failed\n", unit);
                        err = 17;
                        goto fail;
                }

                wlc_phy_machwcap_set(wlc_hw->band->pi, wlc_hw->machwcap);

                wlc_phy_get_phyversion(wlc_hw->band->pi, &wlc_hw->band->phytype,
                                       &wlc_hw->band->phyrev,
                                       &wlc_hw->band->radioid,
                                       &wlc_hw->band->radiorev);
                wlc_hw->band->abgphy_encore =
                    wlc_phy_get_encore(wlc_hw->band->pi);
                wlc->band->abgphy_encore = wlc_phy_get_encore(wlc_hw->band->pi);
                wlc_hw->band->core_flags =
                    wlc_phy_get_coreflags(wlc_hw->band->pi);

                /* verify good phy_type & supported phy revision */
                if (WLCISNPHY(wlc_hw->band)) {
                        if (NCONF_HAS(wlc_hw->band->phyrev))
                                goto good_phy;
                        else
                                goto bad_phy;
                } else if (WLCISLCNPHY(wlc_hw->band)) {
                        if (LCNCONF_HAS(wlc_hw->band->phyrev))
                                goto good_phy;
                        else
                                goto bad_phy;
                } else {
 bad_phy:
                        wiphy_err(wiphy, "wl%d: brcms_b_attach: unsupported "
                                  "phy type/rev (%d/%d)\n", unit,
                                  wlc_hw->band->phytype, wlc_hw->band->phyrev);
                        err = 18;
                        goto fail;
                }

 good_phy:
                /* BMAC_NOTE: wlc->band->pi should not be set below and should be done in the
                 * high level attach. However we can not make that change until all low level access
                 * is changed to wlc_hw->band->pi. Instead do the wlc->band->pi init below, keeping
                 * wlc_hw->band->pi as well for incremental update of low level fns, and cut over
                 * low only init when all fns updated.
                 */
                wlc->band->pi = wlc_hw->band->pi;
                wlc->band->phytype = wlc_hw->band->phytype;
                wlc->band->phyrev = wlc_hw->band->phyrev;
                wlc->band->radioid = wlc_hw->band->radioid;
                wlc->band->radiorev = wlc_hw->band->radiorev;

                /* default contention windows size limits */
                wlc_hw->band->CWmin = APHY_CWMIN;
                wlc_hw->band->CWmax = PHY_CWMAX;

                if (!brcms_b_attach_dmapio(wlc, j, wme)) {
                        err = 19;
                        goto fail;
                }
        }

        /* disable core to match driver "down" state */
        brcms_c_coredisable(wlc_hw);

        /* Match driver "down" state */
        if (wlc_hw->sih->bustype == PCI_BUS)
                ai_pci_down(wlc_hw->sih);

        /* register sb interrupt callback functions */
        ai_register_intr_callback(wlc_hw->sih, (void *)brcms_c_wlintrsoff,
                                  (void *)brcms_c_wlintrsrestore, NULL, wlc);

        /* turn off pll and xtal to match driver "down" state */
        brcms_b_xtal(wlc_hw, OFF);

        /* *********************************************************************
         * The hardware is in the DOWN state at this point. D11 core
         * or cores are in reset with clocks off, and the board PLLs
         * are off if possible.
         *
         * Beyond this point, wlc->sbclk == false and chip registers
         * should not be touched.
         *********************************************************************
         */

        /* init etheraddr state variables */
        macaddr = brcms_c_get_macaddr(wlc_hw);
        if (macaddr == NULL) {
                wiphy_err(wiphy, "wl%d: brcms_b_attach: macaddr not found\n",
                          unit);
                err = 21;
                goto fail;
        }
        brcmu_ether_atoe(macaddr, wlc_hw->etheraddr);
        if (is_broadcast_ether_addr(wlc_hw->etheraddr) ||
            is_zero_ether_addr(wlc_hw->etheraddr)) {
                wiphy_err(wiphy, "wl%d: brcms_b_attach: bad macaddr %s\n",
                          unit, macaddr);
                err = 22;
                goto fail;
        }

        BCMMSG(wlc->wiphy,
                 "deviceid 0x%x nbands %d board 0x%x macaddr: %s\n",
                 wlc_hw->deviceid, wlc_hw->_nbands,
                 wlc_hw->sih->boardtype, macaddr);

        return err;

 fail:
        wiphy_err(wiphy, "wl%d: brcms_b_attach: failed with err %d\n", unit,
                  err);
        return err;
}

/*
 * Initialize brcms_c_info default values ...
 * may get overrides later in this function
 *  BMAC_NOTES, move low out and resolve the dangling ones
 */
static void brcms_b_info_init(struct brcms_c_hw_info *wlc_hw)
{
        struct brcms_c_info *wlc = wlc_hw->wlc;

        /* set default sw macintmask value */
        wlc->defmacintmask = DEF_MACINTMASK;

        /* various 802.11g modes */
        wlc_hw->shortslot = false;

        wlc_hw->SFBL = RETRY_SHORT_FB;
        wlc_hw->LFBL = RETRY_LONG_FB;

        /* default mac retry limits */
        wlc_hw->SRL = RETRY_SHORT_DEF;
        wlc_hw->LRL = RETRY_LONG_DEF;
        wlc_hw->chanspec = CH20MHZ_CHSPEC(1);
}

/*
 * low level detach
 */
int brcms_b_detach(struct brcms_c_info *wlc)
{
        uint i;
        struct brcms_c_hwband *band;
        struct brcms_c_hw_info *wlc_hw = wlc->hw;
        int callbacks;

        callbacks = 0;

        if (wlc_hw->sih) {
                /* detach interrupt sync mechanism since interrupt is disabled and per-port
                 * interrupt object may has been freed. this must be done before sb core switch
                 */
                ai_deregister_intr_callback(wlc_hw->sih);

                if (wlc_hw->sih->bustype == PCI_BUS)
                        ai_pci_sleep(wlc_hw->sih);
        }

        brcms_b_detach_dmapio(wlc_hw);

        band = wlc_hw->band;
        for (i = 0; i < NBANDS_HW(wlc_hw); i++) {
                if (band->pi) {
                        /* Detach this band's phy */
                        wlc_phy_detach(band->pi);
                        band->pi = NULL;
                }
                band = wlc_hw->bandstate[OTHERBANDUNIT(wlc)];
        }

        /* Free shared phy state */
        wlc_phy_shared_detach(wlc_hw->phy_sh);

        wlc_phy_shim_detach(wlc_hw->physhim);

        /* free vars */
        kfree(wlc_hw->vars);
        wlc_hw->vars = NULL;

        if (wlc_hw->sih) {
                ai_detach(wlc_hw->sih);
                wlc_hw->sih = NULL;
        }

        return callbacks;

}

void brcms_b_reset(struct brcms_c_hw_info *wlc_hw)
{
        BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);

        /* reset the core */
        if (!DEVICEREMOVED(wlc_hw->wlc))
                brcms_b_corereset(wlc_hw, WLC_USE_COREFLAGS);

        /* purge the dma rings */
        brcms_c_flushqueues(wlc_hw->wlc);

        brcms_c_reset_bmac_done(wlc_hw->wlc);
}

void
brcms_b_init(struct brcms_c_hw_info *wlc_hw, chanspec_t chanspec,
                          bool mute) {
        u32 macintmask;
        bool fastclk;
        struct brcms_c_info *wlc = wlc_hw->wlc;

        BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);

        /* request FAST clock if not on */
        fastclk = wlc_hw->forcefastclk;
        if (!fastclk)
                brcms_b_clkctl_clk(wlc_hw, CLK_FAST);

        /* disable interrupts */
        macintmask = brcms_intrsoff(wlc->wl);

        /* set up the specified band and chanspec */
        brcms_c_setxband(wlc_hw, CHSPEC_WLCBANDUNIT(chanspec));
        wlc_phy_chanspec_radio_set(wlc_hw->band->pi, chanspec);

        /* do one-time phy inits and calibration */
        wlc_phy_cal_init(wlc_hw->band->pi);

        /* core-specific initialization */
        brcms_b_coreinit(wlc);

        /* suspend the tx fifos and mute the phy for preism cac time */
        if (mute)
                brcms_b_mute(wlc_hw, ON, PHY_MUTE_FOR_PREISM);

        /* band-specific inits */
        brcms_b_bsinit(wlc, chanspec);

        /* restore macintmask */
        brcms_intrsrestore(wlc->wl, macintmask);

        /* seed wake_override with WLC_WAKE_OVERRIDE_MACSUSPEND since the mac is suspended
         * and brcms_c_enable_mac() will clear this override bit.
         */
        mboolset(wlc_hw->wake_override, WLC_WAKE_OVERRIDE_MACSUSPEND);

        /*
         * initialize mac_suspend_depth to 1 to match ucode initial suspended state
         */
        wlc_hw->mac_suspend_depth = 1;

        /* restore the clk */
        if (!fastclk)
                brcms_b_clkctl_clk(wlc_hw, CLK_DYNAMIC);
}

int brcms_b_up_prep(struct brcms_c_hw_info *wlc_hw)
{
        uint coremask;

        BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);

        /*
         * Enable pll and xtal, initialize the power control registers,
         * and force fastclock for the remainder of brcms_c_up().
         */
        brcms_b_xtal(wlc_hw, ON);
        ai_clkctl_init(wlc_hw->sih);
        brcms_b_clkctl_clk(wlc_hw, CLK_FAST);

        /*
         * Configure pci/pcmcia here instead of in brcms_c_attach()
         * to allow mfg hotswap:  down, hotswap (chip power cycle), up.
         */
        coremask = (1 << wlc_hw->wlc->core->coreidx);

        if (wlc_hw->sih->bustype == PCI_BUS)
                ai_pci_setup(wlc_hw->sih, coremask);

        /*
         * Need to read the hwradio status here to cover the case where the system
         * is loaded with the hw radio disabled. We do not want to bring the driver up in this case.
         */
        if (brcms_b_radio_read_hwdisabled(wlc_hw)) {
                /* put SB PCI in down state again */
                if (wlc_hw->sih->bustype == PCI_BUS)
                        ai_pci_down(wlc_hw->sih);
                brcms_b_xtal(wlc_hw, OFF);
                return -ENOMEDIUM;
        }

        if (wlc_hw->sih->bustype == PCI_BUS)
                ai_pci_up(wlc_hw->sih);

        /* reset the d11 core */
        brcms_b_corereset(wlc_hw, WLC_USE_COREFLAGS);

        return 0;
}

int brcms_b_up_finish(struct brcms_c_hw_info *wlc_hw)
{
        BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);

        wlc_hw->up = true;
        wlc_phy_hw_state_upd(wlc_hw->band->pi, true);

        /* FULLY enable dynamic power control and d11 core interrupt */
        brcms_b_clkctl_clk(wlc_hw, CLK_DYNAMIC);
        brcms_intrson(wlc_hw->wlc->wl);
        return 0;
}

int brcms_b_bmac_down_prep(struct brcms_c_hw_info *wlc_hw)
{
        bool dev_gone;
        uint callbacks = 0;

        BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);

        if (!wlc_hw->up)
                return callbacks;

        dev_gone = DEVICEREMOVED(wlc_hw->wlc);

        /* disable interrupts */
        if (dev_gone)
                wlc_hw->wlc->macintmask = 0;
        else {
                /* now disable interrupts */
                brcms_intrsoff(wlc_hw->wlc->wl);

                /* ensure we're running on the pll clock again */
                brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
        }
        /* down phy at the last of this stage */
        callbacks += wlc_phy_down(wlc_hw->band->pi);

        return callbacks;
}

int brcms_b_down_finish(struct brcms_c_hw_info *wlc_hw)
{
        uint callbacks = 0;
        bool dev_gone;

        BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);

        if (!wlc_hw->up)
                return callbacks;

        wlc_hw->up = false;
        wlc_phy_hw_state_upd(wlc_hw->band->pi, false);

        dev_gone = DEVICEREMOVED(wlc_hw->wlc);

        if (dev_gone) {
                wlc_hw->sbclk = false;
                wlc_hw->clk = false;
                wlc_phy_hw_clk_state_upd(wlc_hw->band->pi, false);

                /* reclaim any posted packets */
                brcms_c_flushqueues(wlc_hw->wlc);
        } else {

                /* Reset and disable the core */
                if (ai_iscoreup(wlc_hw->sih)) {
                        if (R_REG(&wlc_hw->regs->maccontrol) &
                            MCTL_EN_MAC)
                                brcms_c_suspend_mac_and_wait(wlc_hw->wlc);
                        callbacks += brcms_reset(wlc_hw->wlc->wl);
                        brcms_c_coredisable(wlc_hw);
                }

                /* turn off primary xtal and pll */
                if (!wlc_hw->noreset) {
                        if (wlc_hw->sih->bustype == PCI_BUS)
                                ai_pci_down(wlc_hw->sih);
                        brcms_b_xtal(wlc_hw, OFF);
                }
        }

        return callbacks;
}

void brcms_b_wait_for_wake(struct brcms_c_hw_info *wlc_hw)
{
        /* delay before first read of ucode state */
        udelay(40);

        /* wait until ucode is no longer asleep */
        SPINWAIT((brcms_b_read_shm(wlc_hw, M_UCODE_DBGST) ==
                  DBGST_ASLEEP), wlc_hw->wlc->fastpwrup_dly);
}

void brcms_b_hw_etheraddr(struct brcms_c_hw_info *wlc_hw, u8 *ea)
{
        memcpy(ea, wlc_hw->etheraddr, ETH_ALEN);
}

static int brcms_b_bandtype(struct brcms_c_hw_info *wlc_hw)
{
        return wlc_hw->band->bandtype;
}

/* control chip clock to save power, enable dynamic clock or force fast clock */
static void brcms_b_clkctl_clk(struct brcms_c_hw_info *wlc_hw, uint mode)
{
        if (PMUCTL_ENAB(wlc_hw->sih)) {
                /* new chips with PMU, CCS_FORCEHT will distribute the HT clock on backplane,
                 *  but mac core will still run on ALP(not HT) when it enters powersave mode,
                 *      which means the FCA bit may not be set.
                 *      should wakeup mac if driver wants it to run on HT.
                 */

                if (wlc_hw->clk) {
                        if (mode == CLK_FAST) {
                                OR_REG(&wlc_hw->regs->clk_ctl_st,
                                       CCS_FORCEHT);

                                udelay(64);

                                SPINWAIT(((R_REG
                                           (&wlc_hw->regs->
                                            clk_ctl_st) & CCS_HTAVAIL) == 0),
                                         PMU_MAX_TRANSITION_DLY);
                                WARN_ON(!(R_REG
                                          (&wlc_hw->regs->
                                           clk_ctl_st) & CCS_HTAVAIL));
                        } else {
                                if ((wlc_hw->sih->pmurev == 0) &&
                                    (R_REG
                                     (&wlc_hw->regs->
                                      clk_ctl_st) & (CCS_FORCEHT | CCS_HTAREQ)))
                                        SPINWAIT(((R_REG
                                                   (&wlc_hw->regs->
                                                    clk_ctl_st) & CCS_HTAVAIL)
                                                  == 0),
                                                 PMU_MAX_TRANSITION_DLY);
                                AND_REG(&wlc_hw->regs->clk_ctl_st,
                                        ~CCS_FORCEHT);
                        }
                }
                wlc_hw->forcefastclk = (mode == CLK_FAST);
        } else {

                /* old chips w/o PMU, force HT through cc,
                 * then use FCA to verify mac is running fast clock
                 */

                wlc_hw->forcefastclk = ai_clkctl_cc(wlc_hw->sih, mode);

                /* check fast clock is available (if core is not in reset) */
                if (wlc_hw->forcefastclk && wlc_hw->clk)
                        WARN_ON(!(ai_core_sflags(wlc_hw->sih, 0, 0) &
                                  SISF_FCLKA));

                /* keep the ucode wake bit on if forcefastclk is on
                 * since we do not want ucode to put us back to slow clock
                 * when it dozes for PM mode.
                 * Code below matches the wake override bit with current forcefastclk state
                 * Only setting bit in wake_override instead of waking ucode immediately
                 * since old code (wlc.c 1.4499) had this behavior. Older code set
                 * wlc->forcefastclk but only had the wake happen if the wakup_ucode work
                 * (protected by an up check) was executed just below.
                 */
                if (wlc_hw->forcefastclk)
                        mboolset(wlc_hw->wake_override,
                                 WLC_WAKE_OVERRIDE_FORCEFAST);
                else
                        mboolclr(wlc_hw->wake_override,
                                 WLC_WAKE_OVERRIDE_FORCEFAST);
        }
}

/* set initial host flags value */
static void
brcms_c_mhfdef(struct brcms_c_info *wlc, u16 *mhfs, u16 mhf2_init)
{
        struct brcms_c_hw_info *wlc_hw = wlc->hw;

        memset(mhfs, 0, MHFMAX * sizeof(u16));

        mhfs[MHF2] |= mhf2_init;

        /* prohibit use of slowclock on multifunction boards */
        if (wlc_hw->boardflags & BFL_NOPLLDOWN)
                mhfs[MHF1] |= MHF1_FORCEFASTCLK;

        if (WLCISNPHY(wlc_hw->band) && NREV_LT(wlc_hw->band->phyrev, 2)) {
                mhfs[MHF2] |= MHF2_NPHY40MHZ_WAR;
                mhfs[MHF1] |= MHF1_IQSWAP_WAR;
        }
}

/* set or clear ucode host flag bits
 * it has an optimization for no-change write
 * it only writes through shared memory when the core has clock;
 * pre-CLK changes should use wlc_write_mhf to get around the optimization
 *
 *
 * bands values are: WLC_BAND_AUTO <--- Current band only
 *                   WLC_BAND_5G   <--- 5G band only
 *                   WLC_BAND_2G   <--- 2G band only
 *                   WLC_BAND_ALL  <--- All bands
 */
void
brcms_b_mhf(struct brcms_c_hw_info *wlc_hw, u8 idx, u16 mask, u16 val,
             int bands)
{
        u16 save;
        u16 addr[MHFMAX] = {
                M_HOST_FLAGS1, M_HOST_FLAGS2, M_HOST_FLAGS3, M_HOST_FLAGS4,
                M_HOST_FLAGS5
        };
        struct brcms_c_hwband *band;

        if ((val & ~mask) || idx >= MHFMAX)
                return; /* error condition */

        switch (bands) {
                /* Current band only or all bands,
                 * then set the band to current band
                 */
        case WLC_BAND_AUTO:
        case WLC_BAND_ALL:
                band = wlc_hw->band;
                break;
        case WLC_BAND_5G:
                band = wlc_hw->bandstate[BAND_5G_INDEX];
                break;
        case WLC_BAND_2G:
                band = wlc_hw->bandstate[BAND_2G_INDEX];
                break;
        default:
                band = NULL;    /* error condition */
        }

        if (band) {
                save = band->mhfs[idx];
                band->mhfs[idx] = (band->mhfs[idx] & ~mask) | val;

                /* optimization: only write through if changed, and
                 * changed band is the current band
                 */
                if (wlc_hw->clk && (band->mhfs[idx] != save)
                    && (band == wlc_hw->band))
                        brcms_b_write_shm(wlc_hw, addr[idx],
                                           (u16) band->mhfs[idx]);
        }

        if (bands == WLC_BAND_ALL) {
                wlc_hw->bandstate[0]->mhfs[idx] =
                    (wlc_hw->bandstate[0]->mhfs[idx] & ~mask) | val;
                wlc_hw->bandstate[1]->mhfs[idx] =
                    (wlc_hw->bandstate[1]->mhfs[idx] & ~mask) | val;
        }
}

u16 brcms_b_mhf_get(struct brcms_c_hw_info *wlc_hw, u8 idx, int bands)
{
        struct brcms_c_hwband *band;

        if (idx >= MHFMAX)
                return 0; /* error condition */
        switch (bands) {
        case WLC_BAND_AUTO:
                band = wlc_hw->band;
                break;
        case WLC_BAND_5G:
                band = wlc_hw->bandstate[BAND_5G_INDEX];
                break;
        case WLC_BAND_2G:
                band = wlc_hw->bandstate[BAND_2G_INDEX];
                break;
        default:
                band = NULL;            /* error condition */
        }

        if (!band)
                return 0;

        return band->mhfs[idx];
}

static void brcms_c_write_mhf(struct brcms_c_hw_info *wlc_hw, u16 *mhfs)
{
        u8 idx;
        u16 addr[] = {
                M_HOST_FLAGS1, M_HOST_FLAGS2, M_HOST_FLAGS3, M_HOST_FLAGS4,
                M_HOST_FLAGS5
        };

        for (idx = 0; idx < MHFMAX; idx++) {
                brcms_b_write_shm(wlc_hw, addr[idx], mhfs[idx]);
        }
}

/* set the maccontrol register to desired reset state and
 * initialize the sw cache of the register
 */
static void brcms_c_mctrl_reset(struct brcms_c_hw_info *wlc_hw)
{
        /* IHR accesses are always enabled, PSM disabled, HPS off and WAKE on */
        wlc_hw->maccontrol = 0;
        wlc_hw->suspended_fifos = 0;
        wlc_hw->wake_override = 0;
        wlc_hw->mute_override = 0;
        brcms_b_mctrl(wlc_hw, ~0, MCTL_IHR_EN | MCTL_WAKE);
}

/* set or clear maccontrol bits */
void brcms_b_mctrl(struct brcms_c_hw_info *wlc_hw, u32 mask, u32 val)
{
        u32 maccontrol;
        u32 new_maccontrol;

        if (val & ~mask)
                return; /* error condition */
        maccontrol = wlc_hw->maccontrol;
        new_maccontrol = (maccontrol & ~mask) | val;

        /* if the new maccontrol value is the same as the old, nothing to do */
        if (new_maccontrol == maccontrol)
                return;

        /* something changed, cache the new value */
        wlc_hw->maccontrol = new_maccontrol;

        /* write the new values with overrides applied */
        brcms_c_mctrl_write(wlc_hw);
}

/* write the software state of maccontrol and overrides to the maccontrol register */
static void brcms_c_mctrl_write(struct brcms_c_hw_info *wlc_hw)
{
        u32 maccontrol = wlc_hw->maccontrol;

        /* OR in the wake bit if overridden */
        if (wlc_hw->wake_override)
                maccontrol |= MCTL_WAKE;

        /* set AP and INFRA bits for mute if needed */
        if (wlc_hw->mute_override) {
                maccontrol &= ~(MCTL_AP);
                maccontrol |= MCTL_INFRA;
        }

        W_REG(&wlc_hw->regs->maccontrol, maccontrol);
}

void brcms_c_ucode_wake_override_set(struct brcms_c_hw_info *wlc_hw,
                                 u32 override_bit)
{
        if (wlc_hw->wake_override || (wlc_hw->maccontrol & MCTL_WAKE)) {
                mboolset(wlc_hw->wake_override, override_bit);
                return;
        }

        mboolset(wlc_hw->wake_override, override_bit);

        brcms_c_mctrl_write(wlc_hw);
        brcms_b_wait_for_wake(wlc_hw);

        return;
}

void brcms_c_ucode_wake_override_clear(struct brcms_c_hw_info *wlc_hw,
                                   u32 override_bit)
{
        mboolclr(wlc_hw->wake_override, override_bit);

        if (wlc_hw->wake_override || (wlc_hw->maccontrol & MCTL_WAKE))
                return;

        brcms_c_mctrl_write(wlc_hw);

        return;
}

/* When driver needs ucode to stop beaconing, it has to make sure that
 * MCTL_AP is clear and MCTL_INFRA is set
 * Mode           MCTL_AP        MCTL_INFRA
 * AP                1              1
 * STA               0              1 <--- This will ensure no beacons
 * IBSS              0              0
 */
static void brcms_c_ucode_mute_override_set(struct brcms_c_hw_info *wlc_hw)
{
        wlc_hw->mute_override = 1;

        /* if maccontrol already has AP == 0 and INFRA == 1 without this
         * override, then there is no change to write
         */
        if ((wlc_hw->maccontrol & (MCTL_AP | MCTL_INFRA)) == MCTL_INFRA)
                return;

        brcms_c_mctrl_write(wlc_hw);

        return;
}

/* Clear the override on AP and INFRA bits */
static void brcms_c_ucode_mute_override_clear(struct brcms_c_hw_info *wlc_hw)
{
        if (wlc_hw->mute_override == 0)
                return;

        wlc_hw->mute_override = 0;

        /* if maccontrol already has AP == 0 and INFRA == 1 without this
         * override, then there is no change to write
         */
        if ((wlc_hw->maccontrol & (MCTL_AP | MCTL_INFRA)) == MCTL_INFRA)
                return;

        brcms_c_mctrl_write(wlc_hw);
}

/*
 * Write a MAC address to the given match reg offset in the RXE match engine.
 */
void
brcms_b_set_addrmatch(struct brcms_c_hw_info *wlc_hw, int match_reg_offset,
                       const u8 *addr)
{
        d11regs_t *regs;
        u16 mac_l;
        u16 mac_m;
        u16 mac_h;

        BCMMSG(wlc_hw->wlc->wiphy, "wl%d: brcms_b_set_addrmatch\n",
                 wlc_hw->unit);

        regs = wlc_hw->regs;
        mac_l = addr[0] | (addr[1] << 8);
        mac_m = addr[2] | (addr[3] << 8);
        mac_h = addr[4] | (addr[5] << 8);

        /* enter the MAC addr into the RXE match registers */
        W_REG(&regs->rcm_ctl, RCM_INC_DATA | match_reg_offset);
        W_REG(&regs->rcm_mat_data, mac_l);
        W_REG(&regs->rcm_mat_data, mac_m);
        W_REG(&regs->rcm_mat_data, mac_h);

}

void
brcms_b_write_template_ram(struct brcms_c_hw_info *wlc_hw, int offset, int len,
                            void *buf)
{
        d11regs_t *regs;
        u32 word;
        bool be_bit;
        BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);

        regs = wlc_hw->regs;
        W_REG(&regs->tplatewrptr, offset);

        /* if MCTL_BIGEND bit set in mac control register,
         * the chip swaps data in fifo, as well as data in
         * template ram
         */
        be_bit = (R_REG(&regs->maccontrol) & MCTL_BIGEND) != 0;

        while (len > 0) {
                memcpy(&word, buf, sizeof(u32));

                if (be_bit)
                        word = cpu_to_be32(word);
                else
                        word = cpu_to_le32(word);

                W_REG(&regs->tplatewrdata, word);

                buf = (u8 *) buf + sizeof(u32);
                len -= sizeof(u32);
        }
}

void brcms_b_set_cwmin(struct brcms_c_hw_info *wlc_hw, u16 newmin)
{
        wlc_hw->band->CWmin = newmin;

        W_REG(&wlc_hw->regs->objaddr, OBJADDR_SCR_SEL | S_DOT11_CWMIN);
        (void)R_REG(&wlc_hw->regs->objaddr);
        W_REG(&wlc_hw->regs->objdata, newmin);
}

void brcms_b_set_cwmax(struct brcms_c_hw_info *wlc_hw, u16 newmax)
{
        wlc_hw->band->CWmax = newmax;

        W_REG(&wlc_hw->regs->objaddr, OBJADDR_SCR_SEL | S_DOT11_CWMAX);
        (void)R_REG(&wlc_hw->regs->objaddr);
        W_REG(&wlc_hw->regs->objdata, newmax);
}

void brcms_b_bw_set(struct brcms_c_hw_info *wlc_hw, u16 bw)
{
        bool fastclk;

        /* request FAST clock if not on */
        fastclk = wlc_hw->forcefastclk;
        if (!fastclk)
                brcms_b_clkctl_clk(wlc_hw, CLK_FAST);

        wlc_phy_bw_state_set(wlc_hw->band->pi, bw);

        brcms_b_phy_reset(wlc_hw);
        wlc_phy_init(wlc_hw->band->pi, wlc_phy_chanspec_get(wlc_hw->band->pi));

        /* restore the clk */
        if (!fastclk)
                brcms_b_clkctl_clk(wlc_hw, CLK_DYNAMIC);
}

static void
brcms_c_write_hw_bcntemplate0(struct brcms_c_hw_info *wlc_hw, void *bcn,
                              int len)
{
        d11regs_t *regs = wlc_hw->regs;

        brcms_b_write_template_ram(wlc_hw, T_BCN0_TPL_BASE, (len + 3) & ~3,
                                    bcn);
        /* write beacon length to SCR */
        brcms_b_write_shm(wlc_hw, M_BCN0_FRM_BYTESZ, (u16) len);
        /* mark beacon0 valid */
        OR_REG(&regs->maccommand, MCMD_BCN0VLD);
}

static void
brcms_c_write_hw_bcntemplate1(struct brcms_c_hw_info *wlc_hw, void *bcn,
                              int len)
{
        d11regs_t *regs = wlc_hw->regs;

        brcms_b_write_template_ram(wlc_hw, T_BCN1_TPL_BASE, (len + 3) & ~3,
                                    bcn);
        /* write beacon length to SCR */
        brcms_b_write_shm(wlc_hw, M_BCN1_FRM_BYTESZ, (u16) len);
        /* mark beacon1 valid */
        OR_REG(&regs->maccommand, MCMD_BCN1VLD);
}

/* mac is assumed to be suspended at this point */
void
brcms_b_write_hw_bcntemplates(struct brcms_c_hw_info *wlc_hw, void *bcn,
                              int len, bool both)
{
        d11regs_t *regs = wlc_hw->regs;

        if (both) {
                brcms_c_write_hw_bcntemplate0(wlc_hw, bcn, len);
                brcms_c_write_hw_bcntemplate1(wlc_hw, bcn, len);
        } else {
                /* bcn 0 */
                if (!(R_REG(&regs->maccommand) & MCMD_BCN0VLD))
                        brcms_c_write_hw_bcntemplate0(wlc_hw, bcn, len);
                /* bcn 1 */
                else if (!
                         (R_REG(&regs->maccommand) & MCMD_BCN1VLD))
                        brcms_c_write_hw_bcntemplate1(wlc_hw, bcn, len);
        }
}

static void WLBANDINITFN(brcms_b_upd_synthpu) (struct brcms_c_hw_info *wlc_hw)
{
        u16 v;
        struct brcms_c_info *wlc = wlc_hw->wlc;
        /* update SYNTHPU_DLY */

        if (WLCISLCNPHY(wlc->band)) {
                v = SYNTHPU_DLY_LPPHY_US;
        } else if (WLCISNPHY(wlc->band) && (NREV_GE(wlc->band->phyrev, 3))) {
                v = SYNTHPU_DLY_NPHY_US;
        } else {
                v = SYNTHPU_DLY_BPHY_US;
        }

        brcms_b_write_shm(wlc_hw, M_SYNTHPU_DLY, v);
}

/* band-specific init */
static void
WLBANDINITFN(brcms_b_bsinit) (struct brcms_c_info *wlc, chanspec_t chanspec)
{
        struct brcms_c_hw_info *wlc_hw = wlc->hw;

        BCMMSG(wlc->wiphy, "wl%d: bandunit %d\n", wlc_hw->unit,
                wlc_hw->band->bandunit);

        brcms_c_ucode_bsinit(wlc_hw);

        wlc_phy_init(wlc_hw->band->pi, chanspec);

        brcms_c_ucode_txant_set(wlc_hw);

        /* cwmin is band-specific, update hardware with value for current band */
        brcms_b_set_cwmin(wlc_hw, wlc_hw->band->CWmin);
        brcms_b_set_cwmax(wlc_hw, wlc_hw->band->CWmax);

        brcms_b_update_slot_timing(wlc_hw,
                                    BAND_5G(wlc_hw->band->
                                            bandtype) ? true : wlc_hw->
                                    shortslot);

        /* write phytype and phyvers */
        brcms_b_write_shm(wlc_hw, M_PHYTYPE, (u16) wlc_hw->band->phytype);
        brcms_b_write_shm(wlc_hw, M_PHYVER, (u16) wlc_hw->band->phyrev);

        /* initialize the txphyctl1 rate table since shmem is shared between bands */
        brcms_upd_ofdm_pctl1_table(wlc_hw);

        brcms_b_upd_synthpu(wlc_hw);
}

static void brcms_b_core_phy_clk(struct brcms_c_hw_info *wlc_hw, bool clk)
{
        BCMMSG(wlc_hw->wlc->wiphy, "wl%d: clk %d\n", wlc_hw->unit, clk);

        wlc_hw->phyclk = clk;

        if (OFF == clk) {       /* clear gmode bit, put phy into reset */

                ai_core_cflags(wlc_hw->sih, (SICF_PRST | SICF_FGC | SICF_GMODE),
                               (SICF_PRST | SICF_FGC));
                udelay(1);
                ai_core_cflags(wlc_hw->sih, (SICF_PRST | SICF_FGC), SICF_PRST);
                udelay(1);

        } else {                /* take phy out of reset */

                ai_core_cflags(wlc_hw->sih, (SICF_PRST | SICF_FGC), SICF_FGC);
                udelay(1);
                ai_core_cflags(wlc_hw->sih, (SICF_FGC), 0);
                udelay(1);

        }
}

/* Perform a soft reset of the PHY PLL */
void brcms_b_core_phypll_reset(struct brcms_c_hw_info *wlc_hw)
{
        BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);

        ai_corereg(wlc_hw->sih, SI_CC_IDX,
                   offsetof(chipcregs_t, chipcontrol_addr), ~0, 0);
        udelay(1);
        ai_corereg(wlc_hw->sih, SI_CC_IDX,
                   offsetof(chipcregs_t, chipcontrol_data), 0x4, 0);
        udelay(1);
        ai_corereg(wlc_hw->sih, SI_CC_IDX,
                   offsetof(chipcregs_t, chipcontrol_data), 0x4, 4);
        udelay(1);
        ai_corereg(wlc_hw->sih, SI_CC_IDX,
                   offsetof(chipcregs_t, chipcontrol_data), 0x4, 0);
        udelay(1);
}

/* light way to turn on phy clock without reset for NPHY only
 *  refer to brcms_b_core_phy_clk for full version
 */
void brcms_b_phyclk_fgc(struct brcms_c_hw_info *wlc_hw, bool clk)
{
        /* support(necessary for NPHY and HYPHY) only */
        if (!WLCISNPHY(wlc_hw->band))
                return;

        if (ON == clk)
                ai_core_cflags(wlc_hw->sih, SICF_FGC, SICF_FGC);
        else
                ai_core_cflags(wlc_hw->sih, SICF_FGC, 0);

}

void brcms_b_macphyclk_set(struct brcms_c_hw_info *wlc_hw, bool clk)
{
        if (ON == clk)
                ai_core_cflags(wlc_hw->sih, SICF_MPCLKE, SICF_MPCLKE);
        else
                ai_core_cflags(wlc_hw->sih, SICF_MPCLKE, 0);
}

void brcms_b_phy_reset(struct brcms_c_hw_info *wlc_hw)
{
        wlc_phy_t *pih = wlc_hw->band->pi;
        u32 phy_bw_clkbits;
        bool phy_in_reset = false;

        BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);

        if (pih == NULL)
                return;

        phy_bw_clkbits = wlc_phy_clk_bwbits(wlc_hw->band->pi);

        /* Specific reset sequence required for NPHY rev 3 and 4 */
        if (WLCISNPHY(wlc_hw->band) && NREV_GE(wlc_hw->band->phyrev, 3) &&
            NREV_LE(wlc_hw->band->phyrev, 4)) {
                /* Set the PHY bandwidth */
                ai_core_cflags(wlc_hw->sih, SICF_BWMASK, phy_bw_clkbits);

                udelay(1);

                /* Perform a soft reset of the PHY PLL */
                brcms_b_core_phypll_reset(wlc_hw);

                /* reset the PHY */
                ai_core_cflags(wlc_hw->sih, (SICF_PRST | SICF_PCLKE),
                               (SICF_PRST | SICF_PCLKE));
                phy_in_reset = true;
        } else {

                ai_core_cflags(wlc_hw->sih,
                               (SICF_PRST | SICF_PCLKE | SICF_BWMASK),
                               (SICF_PRST | SICF_PCLKE | phy_bw_clkbits));
        }

        udelay(2);
        brcms_b_core_phy_clk(wlc_hw, ON);

        if (pih)
                wlc_phy_anacore(pih, ON);
}

/* switch to and initialize new band */
static void
WLBANDINITFN(brcms_b_setband) (struct brcms_c_hw_info *wlc_hw, uint bandunit,
                                chanspec_t chanspec) {
        struct brcms_c_info *wlc = wlc_hw->wlc;
        u32 macintmask;

        /* Enable the d11 core before accessing it */
        if (!ai_iscoreup(wlc_hw->sih)) {
                ai_core_reset(wlc_hw->sih, 0, 0);
                brcms_c_mctrl_reset(wlc_hw);
        }

        macintmask = brcms_c_setband_inact(wlc, bandunit);

        if (!wlc_hw->up)
                return;

        brcms_b_core_phy_clk(wlc_hw, ON);

        /* band-specific initializations */
        brcms_b_bsinit(wlc, chanspec);

        /*
         * If there are any pending software interrupt bits,
         * then replace these with a harmless nonzero value
         * so brcms_c_dpc() will re-enable interrupts when done.
         */
        if (wlc->macintstatus)
                wlc->macintstatus = MI_DMAINT;

        /* restore macintmask */
        brcms_intrsrestore(wlc->wl, macintmask);

        /* ucode should still be suspended.. */
        WARN_ON((R_REG(&wlc_hw->regs->maccontrol) & MCTL_EN_MAC) != 0);
}

/* low-level band switch utility routine */
void WLBANDINITFN(brcms_c_setxband) (struct brcms_c_hw_info *wlc_hw,
                                     uint bandunit)
{
        BCMMSG(wlc_hw->wlc->wiphy, "wl%d: bandunit %d\n", wlc_hw->unit,
                bandunit);

        wlc_hw->band = wlc_hw->bandstate[bandunit];

        /* BMAC_NOTE: until we eliminate need for wlc->band refs in low level code */
        wlc_hw->wlc->band = wlc_hw->wlc->bandstate[bandunit];

        /* set gmode core flag */
        if (wlc_hw->sbclk && !wlc_hw->noreset) {
                ai_core_cflags(wlc_hw->sih, SICF_GMODE,
                               ((bandunit == 0) ? SICF_GMODE : 0));
        }
}

static bool brcms_c_isgoodchip(struct brcms_c_hw_info *wlc_hw)
{

        /* reject unsupported corerev */
        if (!VALID_COREREV(wlc_hw->corerev)) {
                wiphy_err(wlc_hw->wlc->wiphy, "unsupported core rev %d\n",
                          wlc_hw->corerev);
                return false;
        }

        return true;
}

static bool brcms_c_validboardtype(struct brcms_c_hw_info *wlc_hw)
{
        bool goodboard = true;
        uint boardrev = wlc_hw->boardrev;

        if (boardrev == 0)
                goodboard = false;
        else if (boardrev > 0xff) {
                uint brt = (boardrev & 0xf000) >> 12;
                uint b0 = (boardrev & 0xf00) >> 8;
                uint b1 = (boardrev & 0xf0) >> 4;
                uint b2 = boardrev & 0xf;

                if ((brt > 2) || (brt == 0) || (b0 > 9) || (b0 == 0) || (b1 > 9)
                    || (b2 > 9))
                        goodboard = false;
        }

        if (wlc_hw->sih->boardvendor != PCI_VENDOR_ID_BROADCOM)
                return goodboard;

        return goodboard;
}

static char *brcms_c_get_macaddr(struct brcms_c_hw_info *wlc_hw)
{
        const char *varname = "macaddr";
        char *macaddr;

        /* If macaddr exists, use it (Sromrev4, CIS, ...). */
        macaddr = getvar(wlc_hw->vars, varname);
        if (macaddr != NULL)
                return macaddr;

        if (NBANDS_HW(wlc_hw) > 1)
                varname = "et1macaddr";
        else
                varname = "il0macaddr";

        macaddr = getvar(wlc_hw->vars, varname);
        if (macaddr == NULL) {
                wiphy_err(wlc_hw->wlc->wiphy, "wl%d: wlc_get_macaddr: macaddr "
                          "getvar(%s) not found\n", wlc_hw->unit, varname);
        }

        return macaddr;
}

/*
 * Return true if radio is disabled, otherwise false.
 * hw radio disable signal is an external pin, users activate it asynchronously
 * this function could be called when driver is down and w/o clock
 * it operates on different registers depending on corerev and boardflag.
 */
bool brcms_b_radio_read_hwdisabled(struct brcms_c_hw_info *wlc_hw)
{
        bool v, clk, xtal;
        u32 resetbits = 0, flags = 0;

        xtal = wlc_hw->sbclk;
        if (!xtal)
                brcms_b_xtal(wlc_hw, ON);

        /* may need to take core out of reset first */
        clk = wlc_hw->clk;
        if (!clk) {
                /*
                 * mac no longer enables phyclk automatically when driver
                 * accesses phyreg throughput mac. This can be skipped since
                 * only mac reg is accessed below
                 */
                flags |= SICF_PCLKE;

                /* AI chip doesn't restore bar0win2 on hibernation/resume, need sw fixup */
                if ((wlc_hw->sih->chip == BCM43224_CHIP_ID) ||
                    (wlc_hw->sih->chip == BCM43225_CHIP_ID))
                        wlc_hw->regs =
                            (d11regs_t *) ai_setcore(wlc_hw->sih, D11_CORE_ID,
                                                     0);
                ai_core_reset(wlc_hw->sih, flags, resetbits);
                brcms_c_mctrl_reset(wlc_hw);
        }

        v = ((R_REG(&wlc_hw->regs->phydebug) & PDBG_RFD) != 0);

        /* put core back into reset */
        if (!clk)
                ai_core_disable(wlc_hw->sih, 0);

        if (!xtal)
                brcms_b_xtal(wlc_hw, OFF);

        return v;
}

/* Initialize just the hardware when coming out of POR or S3/S5 system states */
void brcms_b_hw_up(struct brcms_c_hw_info *wlc_hw)
{
        if (wlc_hw->wlc->pub->hw_up)
                return;

        BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);

        /*
         * Enable pll and xtal, initialize the power control registers,
         * and force fastclock for the remainder of brcms_c_up().
         */
        brcms_b_xtal(wlc_hw, ON);
        ai_clkctl_init(wlc_hw->sih);
        brcms_b_clkctl_clk(wlc_hw, CLK_FAST);

        if (wlc_hw->sih->bustype == PCI_BUS) {
                ai_pci_fixcfg(wlc_hw->sih);

                /* AI chip doesn't restore bar0win2 on hibernation/resume, need sw fixup */
                if ((wlc_hw->sih->chip == BCM43224_CHIP_ID) ||
                    (wlc_hw->sih->chip == BCM43225_CHIP_ID))
                        wlc_hw->regs =
                            (d11regs_t *) ai_setcore(wlc_hw->sih, D11_CORE_ID,
                                                     0);
        }

        /* Inform phy that a POR reset has occurred so it does a complete phy init */
        wlc_phy_por_inform(wlc_hw->band->pi);

        wlc_hw->ucode_loaded = false;
        wlc_hw->wlc->pub->hw_up = true;

        if ((wlc_hw->boardflags & BFL_FEM)
            && (wlc_hw->sih->chip == BCM4313_CHIP_ID)) {
                if (!
                    (wlc_hw->boardrev >= 0x1250
                     && (wlc_hw->boardflags & BFL_FEM_BT)))
                        ai_epa_4313war(wlc_hw->sih);
        }
}

static bool wlc_dma_rxreset(struct brcms_c_hw_info *wlc_hw, uint fifo)
{
        struct dma_pub *di = wlc_hw->di[fifo];
        return dma_rxreset(di);
}

/* d11 core reset
 *   ensure fask clock during reset
 *   reset dma
 *   reset d11(out of reset)
 *   reset phy(out of reset)
 *   clear software macintstatus for fresh new start
 * one testing hack wlc_hw->noreset will bypass the d11/phy reset
 */
void brcms_b_corereset(struct brcms_c_hw_info *wlc_hw, u32 flags)
{
        d11regs_t *regs;
        uint i;
        bool fastclk;
        u32 resetbits = 0;

        if (flags == WLC_USE_COREFLAGS)
                flags = (wlc_hw->band->pi ? wlc_hw->band->core_flags : 0);

        BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);

        regs = wlc_hw->regs;

        /* request FAST clock if not on  */
        fastclk = wlc_hw->forcefastclk;
        if (!fastclk)
                brcms_b_clkctl_clk(wlc_hw, CLK_FAST);

        /* reset the dma engines except first time thru */
        if (ai_iscoreup(wlc_hw->sih)) {
                for (i = 0; i < NFIFO; i++)
                        if ((wlc_hw->di[i]) && (!dma_txreset(wlc_hw->di[i]))) {
                                wiphy_err(wlc_hw->wlc->wiphy, "wl%d: %s: "
                                          "dma_txreset[%d]: cannot stop dma\n",
                                           wlc_hw->unit, __func__, i);
                        }

                if ((wlc_hw->di[RX_FIFO])
                    && (!wlc_dma_rxreset(wlc_hw, RX_FIFO))) {
                        wiphy_err(wlc_hw->wlc->wiphy, "wl%d: %s: dma_rxreset"
                                  "[%d]: cannot stop dma\n",
                                  wlc_hw->unit, __func__, RX_FIFO);
                }
        }
        /* if noreset, just stop the psm and return */
        if (wlc_hw->noreset) {
                wlc_hw->wlc->macintstatus = 0;  /* skip wl_dpc after down */
                brcms_b_mctrl(wlc_hw, MCTL_PSM_RUN | MCTL_EN_MAC, 0);
                return;
        }

        /*
         * mac no longer enables phyclk automatically when driver accesses
         * phyreg throughput mac, AND phy_reset is skipped at early stage when
         * band->pi is invalid. need to enable PHY CLK
         */
        flags |= SICF_PCLKE;

        /* reset the core
         * In chips with PMU, the fastclk request goes through d11 core reg 0x1e0, which
         *  is cleared by the core_reset. have to re-request it.
         *  This adds some delay and we can optimize it by also requesting fastclk through
         *  chipcommon during this period if necessary. But that has to work coordinate
         *  with other driver like mips/arm since they may touch chipcommon as well.
         */
        wlc_hw->clk = false;
        ai_core_reset(wlc_hw->sih, flags, resetbits);
        wlc_hw->clk = true;
        if (wlc_hw->band && wlc_hw->band->pi)
                wlc_phy_hw_clk_state_upd(wlc_hw->band->pi, true);

        brcms_c_mctrl_reset(wlc_hw);

        if (PMUCTL_ENAB(wlc_hw->sih))
                brcms_b_clkctl_clk(wlc_hw, CLK_FAST);

        brcms_b_phy_reset(wlc_hw);

        /* turn on PHY_PLL */
        brcms_b_core_phypll_ctl(wlc_hw, true);

        /* clear sw intstatus */
        wlc_hw->wlc->macintstatus = 0;

        /* restore the clk setting */
        if (!fastclk)
                brcms_b_clkctl_clk(wlc_hw, CLK_DYNAMIC);
}

/* txfifo sizes needs to be modified(increased) since the newer cores
 * have more memory.
 */
static void brcms_b_corerev_fifofixup(struct brcms_c_hw_info *wlc_hw)
{
        d11regs_t *regs = wlc_hw->regs;
        u16 fifo_nu;
        u16 txfifo_startblk = TXFIFO_START_BLK, txfifo_endblk;
        u16 txfifo_def, txfifo_def1;
        u16 txfifo_cmd;

        /* tx fifos start at TXFIFO_START_BLK from the Base address */
        txfifo_startblk = TXFIFO_START_BLK;

        /* sequence of operations:  reset fifo, set fifo size, reset fifo */
        for (fifo_nu = 0; fifo_nu < NFIFO; fifo_nu++) {

                txfifo_endblk = txfifo_startblk + wlc_hw->xmtfifo_sz[fifo_nu];
                txfifo_def = (txfifo_startblk & 0xff) |
                    (((txfifo_endblk - 1) & 0xff) << TXFIFO_FIFOTOP_SHIFT);
                txfifo_def1 = ((txfifo_startblk >> 8) & 0x1) |
                    ((((txfifo_endblk -
                        1) >> 8) & 0x1) << TXFIFO_FIFOTOP_SHIFT);
                txfifo_cmd =
                    TXFIFOCMD_RESET_MASK | (fifo_nu << TXFIFOCMD_FIFOSEL_SHIFT);

                W_REG(&regs->xmtfifocmd, txfifo_cmd);
                W_REG(&regs->xmtfifodef, txfifo_def);
                W_REG(&regs->xmtfifodef1, txfifo_def1);

                W_REG(&regs->xmtfifocmd, txfifo_cmd);

                txfifo_startblk += wlc_hw->xmtfifo_sz[fifo_nu];
        }
        /*
         * need to propagate to shm location to be in sync since ucode/hw won't
         * do this
         */
        brcms_b_write_shm(wlc_hw, M_FIFOSIZE0,
                           wlc_hw->xmtfifo_sz[TX_AC_BE_FIFO]);
        brcms_b_write_shm(wlc_hw, M_FIFOSIZE1,
                           wlc_hw->xmtfifo_sz[TX_AC_VI_FIFO]);
        brcms_b_write_shm(wlc_hw, M_FIFOSIZE2,
                           ((wlc_hw->xmtfifo_sz[TX_AC_VO_FIFO] << 8) | wlc_hw->
                            xmtfifo_sz[TX_AC_BK_FIFO]));
        brcms_b_write_shm(wlc_hw, M_FIFOSIZE3,
                           ((wlc_hw->xmtfifo_sz[TX_ATIM_FIFO] << 8) | wlc_hw->
                            xmtfifo_sz[TX_BCMC_FIFO]));
}

/* d11 core init
 *   reset PSM
 *   download ucode/PCM
 *   let ucode run to suspended
 *   download ucode inits
 *   config other core registers
 *   init dma
 */
static void brcms_b_coreinit(struct brcms_c_info *wlc)
{
        struct brcms_c_hw_info *wlc_hw = wlc->hw;
        d11regs_t *regs;
        u32 sflags;
        uint bcnint_us;
        uint i = 0;
        bool fifosz_fixup = false;
        int err = 0;
        u16 buf[NFIFO];
        struct wiphy *wiphy = wlc->wiphy;

        regs = wlc_hw->regs;

        BCMMSG(wlc->wiphy, "wl%d\n", wlc_hw->unit);

        /* reset PSM */
        brcms_b_mctrl(wlc_hw, ~0, (MCTL_IHR_EN | MCTL_PSM_JMP_0 | MCTL_WAKE));

        brcms_ucode_download(wlc_hw);
        /*
         * FIFOSZ fixup. driver wants to controls the fifo allocation.
         */
        fifosz_fixup = true;

        /* let the PSM run to the suspended state, set mode to BSS STA */
        W_REG(&regs->macintstatus, -1);
        brcms_b_mctrl(wlc_hw, ~0,
                       (MCTL_IHR_EN | MCTL_INFRA | MCTL_PSM_RUN | MCTL_WAKE));

        /* wait for ucode to self-suspend after auto-init */
        SPINWAIT(((R_REG(&regs->macintstatus) & MI_MACSSPNDD) == 0),
                 1000 * 1000);
        if ((R_REG(&regs->macintstatus) & MI_MACSSPNDD) == 0)
                wiphy_err(wiphy, "wl%d: wlc_coreinit: ucode did not self-"
                          "suspend!\n", wlc_hw->unit);

        brcms_c_gpio_init(wlc);

        sflags = ai_core_sflags(wlc_hw->sih, 0, 0);

        if (D11REV_IS(wlc_hw->corerev, 23)) {
                if (WLCISNPHY(wlc_hw->band))
                        brcms_c_write_inits(wlc_hw, d11n0initvals16);
                else
                        wiphy_err(wiphy, "%s: wl%d: unsupported phy in corerev"
                                  " %d\n", __func__, wlc_hw->unit,
                                  wlc_hw->corerev);
        } else if (D11REV_IS(wlc_hw->corerev, 24)) {
                if (WLCISLCNPHY(wlc_hw->band)) {
                        brcms_c_write_inits(wlc_hw, d11lcn0initvals24);
                } else {
                        wiphy_err(wiphy, "%s: wl%d: unsupported phy in corerev"
                                  " %d\n", __func__, wlc_hw->unit,
                                  wlc_hw->corerev);
                }
        } else {
                wiphy_err(wiphy, "%s: wl%d: unsupported corerev %d\n",
                          __func__, wlc_hw->unit, wlc_hw->corerev);
        }

        /* For old ucode, txfifo sizes needs to be modified(increased) */
        if (fifosz_fixup == true) {
                brcms_b_corerev_fifofixup(wlc_hw);
        }

        /* check txfifo allocations match between ucode and driver */
        buf[TX_AC_BE_FIFO] = brcms_b_read_shm(wlc_hw, M_FIFOSIZE0);
        if (buf[TX_AC_BE_FIFO] != wlc_hw->xmtfifo_sz[TX_AC_BE_FIFO]) {
                i = TX_AC_BE_FIFO;
                err = -1;
        }
        buf[TX_AC_VI_FIFO] = brcms_b_read_shm(wlc_hw, M_FIFOSIZE1);
        if (buf[TX_AC_VI_FIFO] != wlc_hw->xmtfifo_sz[TX_AC_VI_FIFO]) {
                i = TX_AC_VI_FIFO;
                err = -1;
        }
        buf[TX_AC_BK_FIFO] = brcms_b_read_shm(wlc_hw, M_FIFOSIZE2);
        buf[TX_AC_VO_FIFO] = (buf[TX_AC_BK_FIFO] >> 8) & 0xff;
        buf[TX_AC_BK_FIFO] &= 0xff;
        if (buf[TX_AC_BK_FIFO] != wlc_hw->xmtfifo_sz[TX_AC_BK_FIFO]) {
                i = TX_AC_BK_FIFO;
                err = -1;
        }
        if (buf[TX_AC_VO_FIFO] != wlc_hw->xmtfifo_sz[TX_AC_VO_FIFO]) {
                i = TX_AC_VO_FIFO;
                err = -1;
        }
        buf[TX_BCMC_FIFO] = brcms_b_read_shm(wlc_hw, M_FIFOSIZE3);
        buf[TX_ATIM_FIFO] = (buf[TX_BCMC_FIFO] >> 8) & 0xff;
        buf[TX_BCMC_FIFO] &= 0xff;
        if (buf[TX_BCMC_FIFO] != wlc_hw->xmtfifo_sz[TX_BCMC_FIFO]) {
                i = TX_BCMC_FIFO;
                err = -1;
        }
        if (buf[TX_ATIM_FIFO] != wlc_hw->xmtfifo_sz[TX_ATIM_FIFO]) {
                i = TX_ATIM_FIFO;
                err = -1;
        }
        if (err != 0) {
                wiphy_err(wiphy, "wlc_coreinit: txfifo mismatch: ucode size %d"
                          " driver size %d index %d\n", buf[i],
                          wlc_hw->xmtfifo_sz[i], i);
        }

        /* make sure we can still talk to the mac */
        WARN_ON(R_REG(&regs->maccontrol) == 0xffffffff);

        /* band-specific inits done by wlc_bsinit() */

        /* Set up frame burst size and antenna swap threshold init values */
        brcms_b_write_shm(wlc_hw, M_MBURST_SIZE, MAXTXFRAMEBURST);
        brcms_b_write_shm(wlc_hw, M_MAX_ANTCNT, ANTCNT);

        /* enable one rx interrupt per received frame */
        W_REG(&regs->intrcvlazy[0], (1 << IRL_FC_SHIFT));

        /* set the station mode (BSS STA) */
        brcms_b_mctrl(wlc_hw,
                       (MCTL_INFRA | MCTL_DISCARD_PMQ | MCTL_AP),
                       (MCTL_INFRA | MCTL_DISCARD_PMQ));

        /* set up Beacon interval */
        bcnint_us = 0x8000 << 10;
        W_REG(&regs->tsf_cfprep, (bcnint_us << CFPREP_CBI_SHIFT));
        W_REG(&regs->tsf_cfpstart, bcnint_us);
        W_REG(&regs->macintstatus, MI_GP1);

        /* write interrupt mask */
        W_REG(&regs->intctrlregs[RX_FIFO].intmask, DEF_RXINTMASK);

        /* allow the MAC to control the PHY clock (dynamic on/off) */
        brcms_b_macphyclk_set(wlc_hw, ON);

        /* program dynamic clock control fast powerup delay register */
        wlc->fastpwrup_dly = ai_clkctl_fast_pwrup_delay(wlc_hw->sih);
        W_REG(&regs->scc_fastpwrup_dly, wlc->fastpwrup_dly);

        /* tell the ucode the corerev */
        brcms_b_write_shm(wlc_hw, M_MACHW_VER, (u16) wlc_hw->corerev);

        /* tell the ucode MAC capabilities */
        brcms_b_write_shm(wlc_hw, M_MACHW_CAP_L,
                           (u16) (wlc_hw->machwcap & 0xffff));
        brcms_b_write_shm(wlc_hw, M_MACHW_CAP_H,
                           (u16) ((wlc_hw->
                                      machwcap >> 16) & 0xffff));

        /* write retry limits to SCR, this done after PSM init */
        W_REG(&regs->objaddr, OBJADDR_SCR_SEL | S_DOT11_SRC_LMT);
        (void)R_REG(&regs->objaddr);
        W_REG(&regs->objdata, wlc_hw->SRL);
        W_REG(&regs->objaddr, OBJADDR_SCR_SEL | S_DOT11_LRC_LMT);
        (void)R_REG(&regs->objaddr);
        W_REG(&regs->objdata, wlc_hw->LRL);

        /* write rate fallback retry limits */
        brcms_b_write_shm(wlc_hw, M_SFRMTXCNTFBRTHSD, wlc_hw->SFBL);
        brcms_b_write_shm(wlc_hw, M_LFRMTXCNTFBRTHSD, wlc_hw->LFBL);

        AND_REG(&regs->ifs_ctl, 0x0FFF);
        W_REG(&regs->ifs_aifsn, EDCF_AIFSN_MIN);

        /* dma initializations */
        wlc->txpend16165war = 0;

        /* init the tx dma engines */
        for (i = 0; i < NFIFO; i++) {
                if (wlc_hw->di[i])
                        dma_txinit(wlc_hw->di[i]);
        }

        /* init the rx dma engine(s) and post receive buffers */
        dma_rxinit(wlc_hw->di[RX_FIFO]);
        dma_rxfill(wlc_hw->di[RX_FIFO]);
}

/* This function is used for changing the tsf frac register
 * If spur avoidance mode is off, the mac freq will be 80/120/160Mhz
 * If spur avoidance mode is on1, the mac freq will be 82/123/164Mhz
 * If spur avoidance mode is on2, the mac freq will be 84/126/168Mhz
 * HTPHY Formula is 2^26/freq(MHz) e.g.
 * For spuron2 - 126MHz -> 2^26/126 = 532610.0
 *  - 532610 = 0x82082 => tsf_clk_frac_h = 0x8, tsf_clk_frac_l = 0x2082
 * For spuron: 123MHz -> 2^26/123    = 545600.5
 *  - 545601 = 0x85341 => tsf_clk_frac_h = 0x8, tsf_clk_frac_l = 0x5341
 * For spur off: 120MHz -> 2^26/120    = 559240.5
 *  - 559241 = 0x88889 => tsf_clk_frac_h = 0x8, tsf_clk_frac_l = 0x8889
 */

void brcms_b_switch_macfreq(struct brcms_c_hw_info *wlc_hw, u8 spurmode)
{
        d11regs_t *regs;
        regs = wlc_hw->regs;

        if ((wlc_hw->sih->chip == BCM43224_CHIP_ID) ||
            (wlc_hw->sih->chip == BCM43225_CHIP_ID)) {
                if (spurmode == WL_SPURAVOID_ON2) {     /* 126Mhz */
                        W_REG(&regs->tsf_clk_frac_l, 0x2082);
                        W_REG(&regs->tsf_clk_frac_h, 0x8);
                } else if (spurmode == WL_SPURAVOID_ON1) {      /* 123Mhz */
                        W_REG(&regs->tsf_clk_frac_l, 0x5341);
                        W_REG(&regs->tsf_clk_frac_h, 0x8);
                } else {        /* 120Mhz */
                        W_REG(&regs->tsf_clk_frac_l, 0x8889);
                        W_REG(&regs->tsf_clk_frac_h, 0x8);
                }
        } else if (WLCISLCNPHY(wlc_hw->band)) {
                if (spurmode == WL_SPURAVOID_ON1) {     /* 82Mhz */
                        W_REG(&regs->tsf_clk_frac_l, 0x7CE0);
                        W_REG(&regs->tsf_clk_frac_h, 0xC);
                } else {        /* 80Mhz */
                        W_REG(&regs->tsf_clk_frac_l, 0xCCCD);
                        W_REG(&regs->tsf_clk_frac_h, 0xC);
                }
        }
}

/* Initialize GPIOs that are controlled by D11 core */
static void brcms_c_gpio_init(struct brcms_c_info *wlc)
{
        struct brcms_c_hw_info *wlc_hw = wlc->hw;
        d11regs_t *regs;
        u32 gc, gm;

        regs = wlc_hw->regs;

        /* use GPIO select 0 to get all gpio signals from the gpio out reg */
        brcms_b_mctrl(wlc_hw, MCTL_GPOUT_SEL_MASK, 0);

        /*
         * Common GPIO setup:
         *      G0 = LED 0 = WLAN Activity
         *      G1 = LED 1 = WLAN 2.4 GHz Radio State
         *      G2 = LED 2 = WLAN 5 GHz Radio State
         *      G4 = radio disable input (HI enabled, LO disabled)
         */

        gc = gm = 0;

        /* Allocate GPIOs for mimo antenna diversity feature */
        if (wlc_hw->antsel_type == ANTSEL_2x3) {
                /* Enable antenna diversity, use 2x3 mode */
                brcms_b_mhf(wlc_hw, MHF3, MHF3_ANTSEL_EN,
                             MHF3_ANTSEL_EN, WLC_BAND_ALL);
                brcms_b_mhf(wlc_hw, MHF3, MHF3_ANTSEL_MODE,
                             MHF3_ANTSEL_MODE, WLC_BAND_ALL);

                /* init superswitch control */
                wlc_phy_antsel_init(wlc_hw->band->pi, false);

        } else if (wlc_hw->antsel_type == ANTSEL_2x4) {
                gm |= gc |= (BOARD_GPIO_12 | BOARD_GPIO_13);
                /*
                 * The board itself is powered by these GPIOs
                 * (when not sending pattern) so set them high
                 */
                OR_REG(&regs->psm_gpio_oe,
                       (BOARD_GPIO_12 | BOARD_GPIO_13));
                OR_REG(&regs->psm_gpio_out,
                       (BOARD_GPIO_12 | BOARD_GPIO_13));

                /* Enable antenna diversity, use 2x4 mode */
                brcms_b_mhf(wlc_hw, MHF3, MHF3_ANTSEL_EN,
                             MHF3_ANTSEL_EN, WLC_BAND_ALL);
                brcms_b_mhf(wlc_hw, MHF3, MHF3_ANTSEL_MODE, 0,
                             WLC_BAND_ALL);

                /* Configure the desired clock to be 4Mhz */
                brcms_b_write_shm(wlc_hw, M_ANTSEL_CLKDIV,
                                   ANTSEL_CLKDIV_4MHZ);
        }

        /* gpio 9 controls the PA.  ucode is responsible for wiggling out and oe */
        if (wlc_hw->boardflags & BFL_PACTRL)
                gm |= gc |= BOARD_GPIO_PACTRL;

        /* apply to gpiocontrol register */
        ai_gpiocontrol(wlc_hw->sih, gm, gc, GPIO_DRV_PRIORITY);
}

static void brcms_ucode_download(struct brcms_c_hw_info *wlc_hw)
{
        struct brcms_c_info *wlc;
        wlc = wlc_hw->wlc;

        if (wlc_hw->ucode_loaded)
                return;

        if (D11REV_IS(wlc_hw->corerev, 23)) {
                if (WLCISNPHY(wlc_hw->band)) {
                        brcms_ucode_write(wlc_hw, bcm43xx_16_mimo,
                                        bcm43xx_16_mimosz);
                        wlc_hw->ucode_loaded = true;
                } else
                        wiphy_err(wlc->wiphy, "%s: wl%d: unsupported phy in "
                                  "corerev %d\n",
                                  __func__, wlc_hw->unit, wlc_hw->corerev);
        } else if (D11REV_IS(wlc_hw->corerev, 24)) {
                if (WLCISLCNPHY(wlc_hw->band)) {
                        brcms_ucode_write(wlc_hw, bcm43xx_24_lcn,
                                        bcm43xx_24_lcnsz);
                        wlc_hw->ucode_loaded = true;
                } else {
                        wiphy_err(wlc->wiphy, "%s: wl%d: unsupported phy in "
                                  "corerev %d\n",
                                  __func__, wlc_hw->unit, wlc_hw->corerev);
                }
        }
}

static void brcms_ucode_write(struct brcms_c_hw_info *wlc_hw, const u32 ucode[],
                              const uint nbytes) {
        d11regs_t *regs = wlc_hw->regs;
        uint i;
        uint count;

        BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);

        count = (nbytes / sizeof(u32));

        W_REG(&regs->objaddr, (OBJADDR_AUTO_INC | OBJADDR_UCM_SEL));
        (void)R_REG(&regs->objaddr);
        for (i = 0; i < count; i++)
                W_REG(&regs->objdata, ucode[i]);
}

static void brcms_c_write_inits(struct brcms_c_hw_info *wlc_hw,
                            const struct d11init *inits)
{
        int i;
        volatile u8 *base;

        BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);

        base = (volatile u8 *)wlc_hw->regs;

        for (i = 0; inits[i].addr != 0xffff; i++) {
                if (inits[i].size == 2)
                        W_REG((u16 *)(base + inits[i].addr),
                              inits[i].value);
                else if (inits[i].size == 4)
                        W_REG((u32 *)(base + inits[i].addr),
                              inits[i].value);
        }
}

static void brcms_c_ucode_txant_set(struct brcms_c_hw_info *wlc_hw)
{
        u16 phyctl;
        u16 phytxant = wlc_hw->bmac_phytxant;
        u16 mask = PHY_TXC_ANT_MASK;

        /* set the Probe Response frame phy control word */
        phyctl = brcms_b_read_shm(wlc_hw, M_CTXPRS_BLK + C_CTX_PCTLWD_POS);
        phyctl = (phyctl & ~mask) | phytxant;
        brcms_b_write_shm(wlc_hw, M_CTXPRS_BLK + C_CTX_PCTLWD_POS, phyctl);

        /* set the Response (ACK/CTS) frame phy control word */
        phyctl = brcms_b_read_shm(wlc_hw, M_RSP_PCTLWD);
        phyctl = (phyctl & ~mask) | phytxant;
        brcms_b_write_shm(wlc_hw, M_RSP_PCTLWD, phyctl);
}

void brcms_b_txant_set(struct brcms_c_hw_info *wlc_hw, u16 phytxant)
{
        /* update sw state */
        wlc_hw->bmac_phytxant = phytxant;

        /* push to ucode if up */
        if (!wlc_hw->up)
                return;
        brcms_c_ucode_txant_set(wlc_hw);

}

u16 brcms_b_get_txant(struct brcms_c_hw_info *wlc_hw)
{
        return (u16) wlc_hw->wlc->stf->txant;
}

void brcms_b_antsel_type_set(struct brcms_c_hw_info *wlc_hw, u8 antsel_type)
{
        wlc_hw->antsel_type = antsel_type;

        /* Update the antsel type for phy module to use */
        wlc_phy_antsel_type_set(wlc_hw->band->pi, antsel_type);
}

void brcms_b_fifoerrors(struct brcms_c_hw_info *wlc_hw)
{
        bool fatal = false;
        uint unit;
        uint intstatus, idx;
        d11regs_t *regs = wlc_hw->regs;
        struct wiphy *wiphy = wlc_hw->wlc->wiphy;

        unit = wlc_hw->unit;

        for (idx = 0; idx < NFIFO; idx++) {
                /* read intstatus register and ignore any non-error bits */
                intstatus =
                    R_REG(&regs->intctrlregs[idx].intstatus) & I_ERRORS;
                if (!intstatus)
                        continue;

                BCMMSG(wlc_hw->wlc->wiphy, "wl%d: intstatus%d 0x%x\n",
                        unit, idx, intstatus);

                if (intstatus & I_RO) {
                        wiphy_err(wiphy, "wl%d: fifo %d: receive fifo "
                                  "overflow\n", unit, idx);
                        fatal = true;
                }

                if (intstatus & I_PC) {
                        wiphy_err(wiphy, "wl%d: fifo %d: descriptor error\n",
                                 unit, idx);
                        fatal = true;
                }

                if (intstatus & I_PD) {
                        wiphy_err(wiphy, "wl%d: fifo %d: data error\n", unit,
                                  idx);
                        fatal = true;
                }

                if (intstatus & I_DE) {
                        wiphy_err(wiphy, "wl%d: fifo %d: descriptor protocol "
                                  "error\n", unit, idx);
                        fatal = true;
                }

                if (intstatus & I_RU) {
                        wiphy_err(wiphy, "wl%d: fifo %d: receive descriptor "
                                  "underflow\n", idx, unit);
                }

                if (intstatus & I_XU) {
                        wiphy_err(wiphy, "wl%d: fifo %d: transmit fifo "
                                  "underflow\n", idx, unit);
                        fatal = true;
                }

                if (fatal) {
                        brcms_c_fatal_error(wlc_hw->wlc);       /* big hammer */
                        break;
                } else
                        W_REG(&regs->intctrlregs[idx].intstatus,
                              intstatus);
        }
}

void brcms_c_intrson(struct brcms_c_info *wlc)
{
        struct brcms_c_hw_info *wlc_hw = wlc->hw;
        wlc->macintmask = wlc->defmacintmask;
        W_REG(&wlc_hw->regs->macintmask, wlc->macintmask);
}

/* callback for siutils.c, which has only wlc handler, no wl
 * they both check up, not only because there is no need to off/restore d11 interrupt
 *  but also because per-port code may require sync with valid interrupt.
 */

static u32 brcms_c_wlintrsoff(struct brcms_c_info *wlc)
{
        if (!wlc->hw->up)
                return 0;

        return brcms_intrsoff(wlc->wl);
}

static void brcms_c_wlintrsrestore(struct brcms_c_info *wlc, u32 macintmask)
{
        if (!wlc->hw->up)
                return;

        brcms_intrsrestore(wlc->wl, macintmask);
}

u32 brcms_c_intrsoff(struct brcms_c_info *wlc)
{
        struct brcms_c_hw_info *wlc_hw = wlc->hw;
        u32 macintmask;

        if (!wlc_hw->clk)
                return 0;

        macintmask = wlc->macintmask;   /* isr can still happen */

        W_REG(&wlc_hw->regs->macintmask, 0);
        (void)R_REG(&wlc_hw->regs->macintmask); /* sync readback */
        udelay(1);              /* ensure int line is no longer driven */
        wlc->macintmask = 0;

        /* return previous macintmask; resolve race between us and our isr */
        return wlc->macintstatus ? 0 : macintmask;
}

void brcms_c_intrsrestore(struct brcms_c_info *wlc, u32 macintmask)
{
        struct brcms_c_hw_info *wlc_hw = wlc->hw;
        if (!wlc_hw->clk)
                return;

        wlc->macintmask = macintmask;
        W_REG(&wlc_hw->regs->macintmask, wlc->macintmask);
}

static void brcms_b_mute(struct brcms_c_hw_info *wlc_hw, bool on, mbool flags)
{
        u8 null_ether_addr[ETH_ALEN] = {0, 0, 0, 0, 0, 0};

        if (on) {
                /* suspend tx fifos */
                brcms_b_tx_fifo_suspend(wlc_hw, TX_DATA_FIFO);
                brcms_b_tx_fifo_suspend(wlc_hw, TX_CTL_FIFO);
                brcms_b_tx_fifo_suspend(wlc_hw, TX_AC_BK_FIFO);
                brcms_b_tx_fifo_suspend(wlc_hw, TX_AC_VI_FIFO);

                /* zero the address match register so we do not send ACKs */
                brcms_b_set_addrmatch(wlc_hw, RCM_MAC_OFFSET,
                                       null_ether_addr);
        } else {
                /* resume tx fifos */
                if (!wlc_hw->wlc->tx_suspended) {
                        brcms_b_tx_fifo_resume(wlc_hw, TX_DATA_FIFO);
                }
                brcms_b_tx_fifo_resume(wlc_hw, TX_CTL_FIFO);
                brcms_b_tx_fifo_resume(wlc_hw, TX_AC_BK_FIFO);
                brcms_b_tx_fifo_resume(wlc_hw, TX_AC_VI_FIFO);

                /* Restore address */
                brcms_b_set_addrmatch(wlc_hw, RCM_MAC_OFFSET,
                                       wlc_hw->etheraddr);
        }

        wlc_phy_mute_upd(wlc_hw->band->pi, on, flags);

        if (on)
                brcms_c_ucode_mute_override_set(wlc_hw);
        else
                brcms_c_ucode_mute_override_clear(wlc_hw);
}

int brcms_b_xmtfifo_sz_get(struct brcms_c_hw_info *wlc_hw, uint fifo,
                           uint *blocks)
{
        if (fifo >= NFIFO)
                return -EINVAL;

        *blocks = wlc_hw->xmtfifo_sz[fifo];

        return 0;
}

/* brcms_b_tx_fifo_suspended:
 * Check the MAC's tx suspend status for a tx fifo.
 *
 * When the MAC acknowledges a tx suspend, it indicates that no more
 * packets will be transmitted out the radio. This is independent of
 * DMA channel suspension---the DMA may have finished suspending, or may still
 * be pulling data into a tx fifo, by the time the MAC acks the suspend
 * request.
 */
static bool brcms_b_tx_fifo_suspended(struct brcms_c_hw_info *wlc_hw,
                                      uint tx_fifo)
{
        /* check that a suspend has been requested and is no longer pending */

        /*
         * for DMA mode, the suspend request is set in xmtcontrol of the DMA engine,
         * and the tx fifo suspend at the lower end of the MAC is acknowledged in the
         * chnstatus register.
         * The tx fifo suspend completion is independent of the DMA suspend completion and
         *   may be acked before or after the DMA is suspended.
         */
        if (dma_txsuspended(wlc_hw->di[tx_fifo]) &&
            (R_REG(&wlc_hw->regs->chnstatus) &
             (1 << tx_fifo)) == 0)
                return true;

        return false;
}

static void brcms_b_tx_fifo_suspend(struct brcms_c_hw_info *wlc_hw,
                                    uint tx_fifo)
{
        u8 fifo = 1 << tx_fifo;

        /* Two clients of this code, 11h Quiet period and scanning. */

        /* only suspend if not already suspended */
        if ((wlc_hw->suspended_fifos & fifo) == fifo)
                return;

        /* force the core awake only if not already */
        if (wlc_hw->suspended_fifos == 0)
                brcms_c_ucode_wake_override_set(wlc_hw,
                                                WLC_WAKE_OVERRIDE_TXFIFO);

        wlc_hw->suspended_fifos |= fifo;

        if (wlc_hw->di[tx_fifo]) {
                /* Suspending AMPDU transmissions in the middle can cause underflow
                 * which may result in mismatch between ucode and driver
                 * so suspend the mac before suspending the FIFO
                 */
                if (WLC_PHY_11N_CAP(wlc_hw->band))
                        brcms_c_suspend_mac_and_wait(wlc_hw->wlc);

                dma_txsuspend(wlc_hw->di[tx_fifo]);

                if (WLC_PHY_11N_CAP(wlc_hw->band))
                        brcms_c_enable_mac(wlc_hw->wlc);
        }
}

static void brcms_b_tx_fifo_resume(struct brcms_c_hw_info *wlc_hw,
                                   uint tx_fifo)
{
        /* BMAC_NOTE: WLC_TX_FIFO_ENAB is done in brcms_c_dpc() for DMA case
         * but need to be done here for PIO otherwise the watchdog will catch
         * the inconsistency and fire
         */
        /* Two clients of this code, 11h Quiet period and scanning. */
        if (wlc_hw->di[tx_fifo])
                dma_txresume(wlc_hw->di[tx_fifo]);

        /* allow core to sleep again */
        if (wlc_hw->suspended_fifos == 0)
                return;
        else {
                wlc_hw->suspended_fifos &= ~(1 << tx_fifo);
                if (wlc_hw->suspended_fifos == 0)
                        brcms_c_ucode_wake_override_clear(wlc_hw,
                                                      WLC_WAKE_OVERRIDE_TXFIFO);
        }
}

/*
 * Read and clear macintmask and macintstatus and intstatus registers.
 * This routine should be called with interrupts off
 * Return:
 *   -1 if DEVICEREMOVED(wlc) evaluates to true;
 *   0 if the interrupt is not for us, or we are in some special cases;
 *   device interrupt status bits otherwise.
 */
static inline u32 wlc_intstatus(struct brcms_c_info *wlc, bool in_isr)
{
        struct brcms_c_hw_info *wlc_hw = wlc->hw;
        d11regs_t *regs = wlc_hw->regs;
        u32 macintstatus;

        /* macintstatus includes a DMA interrupt summary bit */
        macintstatus = R_REG(&regs->macintstatus);

        BCMMSG(wlc->wiphy, "wl%d: macintstatus: 0x%x\n", wlc_hw->unit,
                 macintstatus);

        /* detect cardbus removed, in power down(suspend) and in reset */
        if (DEVICEREMOVED(wlc))
                return -1;

        /* DEVICEREMOVED succeeds even when the core is still resetting,
         * handle that case here.
         */
        if (macintstatus == 0xffffffff)
                return 0;

        /* defer unsolicited interrupts */
        macintstatus &= (in_isr ? wlc->macintmask : wlc->defmacintmask);

        /* if not for us */
        if (macintstatus == 0)
                return 0;

        /* interrupts are already turned off for CFE build
         * Caution: For CFE Turning off the interrupts again has some undesired
         * consequences
         */
        /* turn off the interrupts */
        W_REG(&regs->macintmask, 0);
        (void)R_REG(&regs->macintmask); /* sync readback */
        wlc->macintmask = 0;

        /* clear device interrupts */
        W_REG(&regs->macintstatus, macintstatus);

        /* MI_DMAINT is indication of non-zero intstatus */
        if (macintstatus & MI_DMAINT) {
                /*
                 * only fifo interrupt enabled is I_RI in
                 * RX_FIFO. If MI_DMAINT is set, assume it
                 * is set and clear the interrupt.
                 */
                W_REG(&regs->intctrlregs[RX_FIFO].intstatus,
                      DEF_RXINTMASK);
        }

        return macintstatus;
}

/* Update wlc->macintstatus and wlc->intstatus[]. */
/* Return true if they are updated successfully. false otherwise */
bool brcms_c_intrsupd(struct brcms_c_info *wlc)
{
        u32 macintstatus;

        /* read and clear macintstatus and intstatus registers */
        macintstatus = wlc_intstatus(wlc, false);

        /* device is removed */
        if (macintstatus == 0xffffffff)
                return false;

        /* update interrupt status in software */
        wlc->macintstatus |= macintstatus;

        return true;
}

/*
 * First-level interrupt processing.
 * Return true if this was our interrupt, false otherwise.
 * *wantdpc will be set to true if further brcms_c_dpc() processing is required,
 * false otherwise.
 */
bool brcms_c_isr(struct brcms_c_info *wlc, bool *wantdpc)
{
        struct brcms_c_hw_info *wlc_hw = wlc->hw;
        u32 macintstatus;

        *wantdpc = false;

        if (!wlc_hw->up || !wlc->macintmask)
                return false;

        /* read and clear macintstatus and intstatus registers */
        macintstatus = wlc_intstatus(wlc, true);

        if (macintstatus == 0xffffffff)
                wiphy_err(wlc->wiphy, "DEVICEREMOVED detected in the ISR code"
                          " path\n");

        /* it is not for us */
        if (macintstatus == 0)
                return false;

        *wantdpc = true;

        /* save interrupt status bits */
        wlc->macintstatus = macintstatus;

        return true;

}

static bool
brcms_b_dotxstatus(struct brcms_c_hw_info *wlc_hw, tx_status_t *txs, u32 s2)
{
        /* discard intermediate indications for ucode with one legitimate case:
         *   e.g. if "useRTS" is set. ucode did a successful rts/cts exchange, but the subsequent
         *   tx of DATA failed. so it will start rts/cts from the beginning (resetting the rts
         *   transmission count)
         */
        if (!(txs->status & TX_STATUS_AMPDU)
            && (txs->status & TX_STATUS_INTERMEDIATE)) {
                return false;
        }

        return brcms_c_dotxstatus(wlc_hw->wlc, txs, s2);
}

/* process tx completion events in BMAC
 * Return true if more tx status need to be processed. false otherwise.
 */
static bool
brcms_b_txstatus(struct brcms_c_hw_info *wlc_hw, bool bound, bool *fatal)
{
        bool morepending = false;
        struct brcms_c_info *wlc = wlc_hw->wlc;
        d11regs_t *regs;
        tx_status_t txstatus, *txs;
        u32 s1, s2;
        uint n = 0;
        /*
         * Param 'max_tx_num' indicates max. # tx status to process before
         * break out.
         */
        uint max_tx_num = bound ? wlc->pub->tunables->txsbnd : -1;

        BCMMSG(wlc->wiphy, "wl%d\n", wlc_hw->unit);

        txs = &txstatus;
        regs = wlc_hw->regs;
        while (!(*fatal)
               && (s1 = R_REG(&regs->frmtxstatus)) & TXS_V) {

                if (s1 == 0xffffffff) {
                        wiphy_err(wlc->wiphy, "wl%d: %s: dead chip\n",
                                wlc_hw->unit, __func__);
                        return morepending;
                }

                        s2 = R_REG(&regs->frmtxstatus2);

                txs->status = s1 & TXS_STATUS_MASK;
                txs->frameid = (s1 & TXS_FID_MASK) >> TXS_FID_SHIFT;
                txs->sequence = s2 & TXS_SEQ_MASK;
                txs->phyerr = (s2 & TXS_PTX_MASK) >> TXS_PTX_SHIFT;
                txs->lasttxtime = 0;

                *fatal = brcms_b_dotxstatus(wlc_hw, txs, s2);

                /* !give others some time to run! */
                if (++n >= max_tx_num)
                        break;
        }

        if (*fatal)
                return 0;

        if (n >= max_tx_num)
                morepending = true;

        if (!pktq_empty(&wlc->pkt_queue->q))
                brcms_c_send_q(wlc);

        return morepending;
}

void brcms_c_suspend_mac_and_wait(struct brcms_c_info *wlc)
{
        struct brcms_c_hw_info *wlc_hw = wlc->hw;
        d11regs_t *regs = wlc_hw->regs;
        u32 mc, mi;
        struct wiphy *wiphy = wlc->wiphy;

        BCMMSG(wlc->wiphy, "wl%d: bandunit %d\n", wlc_hw->unit,
                wlc_hw->band->bandunit);

        /*
         * Track overlapping suspend requests
         */
        wlc_hw->mac_suspend_depth++;
        if (wlc_hw->mac_suspend_depth > 1)
                return;

        /* force the core awake */
        brcms_c_ucode_wake_override_set(wlc_hw, WLC_WAKE_OVERRIDE_MACSUSPEND);

        mc = R_REG(&regs->maccontrol);

        if (mc == 0xffffffff) {
                wiphy_err(wiphy, "wl%d: %s: dead chip\n", wlc_hw->unit,
                          __func__);
                brcms_down(wlc->wl);
                return;
        }
        WARN_ON(mc & MCTL_PSM_JMP_0);
        WARN_ON(!(mc & MCTL_PSM_RUN));
        WARN_ON(!(mc & MCTL_EN_MAC));

        mi = R_REG(&regs->macintstatus);
        if (mi == 0xffffffff) {
                wiphy_err(wiphy, "wl%d: %s: dead chip\n", wlc_hw->unit,
                          __func__);
                brcms_down(wlc->wl);
                return;
        }
        WARN_ON(mi & MI_MACSSPNDD);

        brcms_b_mctrl(wlc_hw, MCTL_EN_MAC, 0);

        SPINWAIT(!(R_REG(&regs->macintstatus) & MI_MACSSPNDD),
                 WLC_MAX_MAC_SUSPEND);

        if (!(R_REG(&regs->macintstatus) & MI_MACSSPNDD)) {
                wiphy_err(wiphy, "wl%d: wlc_suspend_mac_and_wait: waited %d uS"
                          " and MI_MACSSPNDD is still not on.\n",
                          wlc_hw->unit, WLC_MAX_MAC_SUSPEND);
                wiphy_err(wiphy, "wl%d: psmdebug 0x%08x, phydebug 0x%08x, "
                          "psm_brc 0x%04x\n", wlc_hw->unit,
                          R_REG(&regs->psmdebug),
                          R_REG(&regs->phydebug),
                          R_REG(&regs->psm_brc));
        }

        mc = R_REG(&regs->maccontrol);
        if (mc == 0xffffffff) {
                wiphy_err(wiphy, "wl%d: %s: dead chip\n", wlc_hw->unit,
                          __func__);
                brcms_down(wlc->wl);
                return;
        }
        WARN_ON(mc & MCTL_PSM_JMP_0);
        WARN_ON(!(mc & MCTL_PSM_RUN));
        WARN_ON(mc & MCTL_EN_MAC);
}

void brcms_c_enable_mac(struct brcms_c_info *wlc)
{
        struct brcms_c_hw_info *wlc_hw = wlc->hw;
        d11regs_t *regs = wlc_hw->regs;
        u32 mc, mi;

        BCMMSG(wlc->wiphy, "wl%d: bandunit %d\n", wlc_hw->unit,
                wlc->band->bandunit);

        /*
         * Track overlapping suspend requests
         */
        wlc_hw->mac_suspend_depth--;
        if (wlc_hw->mac_suspend_depth > 0)
                return;

        mc = R_REG(&regs->maccontrol);
        WARN_ON(mc & MCTL_PSM_JMP_0);
        WARN_ON(mc & MCTL_EN_MAC);
        WARN_ON(!(mc & MCTL_PSM_RUN));

        brcms_b_mctrl(wlc_hw, MCTL_EN_MAC, MCTL_EN_MAC);
        W_REG(&regs->macintstatus, MI_MACSSPNDD);

        mc = R_REG(&regs->maccontrol);
        WARN_ON(mc & MCTL_PSM_JMP_0);
        WARN_ON(!(mc & MCTL_EN_MAC));
        WARN_ON(!(mc & MCTL_PSM_RUN));

        mi = R_REG(&regs->macintstatus);
        WARN_ON(mi & MI_MACSSPNDD);

        brcms_c_ucode_wake_override_clear(wlc_hw, WLC_WAKE_OVERRIDE_MACSUSPEND);
}

static void brcms_upd_ofdm_pctl1_table(struct brcms_c_hw_info *wlc_hw)
{
        u8 rate;
        u8 rates[8] = {
                WLC_RATE_6M, WLC_RATE_9M, WLC_RATE_12M, WLC_RATE_18M,
                WLC_RATE_24M, WLC_RATE_36M, WLC_RATE_48M, WLC_RATE_54M
        };
        u16 entry_ptr;
        u16 pctl1;
        uint i;

        if (!WLC_PHY_11N_CAP(wlc_hw->band))
                return;

        /* walk the phy rate table and update the entries */
        for (i = 0; i < ARRAY_SIZE(rates); i++) {
                rate = rates[i];

                entry_ptr = brcms_b_ofdm_ratetable_offset(wlc_hw, rate);

                /* read the SHM Rate Table entry OFDM PCTL1 values */
                pctl1 =
                    brcms_b_read_shm(wlc_hw, entry_ptr + M_RT_OFDM_PCTL1_POS);

                /* modify the value */
                pctl1 &= ~PHY_TXC1_MODE_MASK;
                pctl1 |= (wlc_hw->hw_stf_ss_opmode << PHY_TXC1_MODE_SHIFT);

                /* Update the SHM Rate Table entry OFDM PCTL1 values */
                brcms_b_write_shm(wlc_hw, entry_ptr + M_RT_OFDM_PCTL1_POS,
                                   pctl1);
        }
}

static u16 brcms_b_ofdm_ratetable_offset(struct brcms_c_hw_info *wlc_hw,
                                         u8 rate)
{
        uint i;
        u8 plcp_rate = 0;
        struct plcp_signal_rate_lookup {
                u8 rate;
                u8 signal_rate;
        };
        /* OFDM RATE sub-field of PLCP SIGNAL field, per 802.11 sec 17.3.4.1 */
        const struct plcp_signal_rate_lookup rate_lookup[] = {
                {WLC_RATE_6M, 0xB},
                {WLC_RATE_9M, 0xF},
                {WLC_RATE_12M, 0xA},
                {WLC_RATE_18M, 0xE},
                {WLC_RATE_24M, 0x9},
                {WLC_RATE_36M, 0xD},
                {WLC_RATE_48M, 0x8},
                {WLC_RATE_54M, 0xC}
        };

        for (i = 0; i < ARRAY_SIZE(rate_lookup); i++) {
                if (rate == rate_lookup[i].rate) {
                        plcp_rate = rate_lookup[i].signal_rate;
                        break;
                }
        }

        /* Find the SHM pointer to the rate table entry by looking in the
         * Direct-map Table
         */
        return 2 * brcms_b_read_shm(wlc_hw, M_RT_DIRMAP_A + (plcp_rate * 2));
}

void brcms_b_band_stf_ss_set(struct brcms_c_hw_info *wlc_hw, u8 stf_mode)
{
        wlc_hw->hw_stf_ss_opmode = stf_mode;

        if (wlc_hw->clk)
                brcms_upd_ofdm_pctl1_table(wlc_hw);
}

void
brcms_b_read_tsf(struct brcms_c_hw_info *wlc_hw, u32 *tsf_l_ptr,
                  u32 *tsf_h_ptr)
{
        d11regs_t *regs = wlc_hw->regs;

        /* read the tsf timer low, then high to get an atomic read */
        *tsf_l_ptr = R_REG(&regs->tsf_timerlow);
        *tsf_h_ptr = R_REG(&regs->tsf_timerhigh);

        return;
}

static bool brcms_b_validate_chip_access(struct brcms_c_hw_info *wlc_hw)
{
        d11regs_t *regs;
        u32 w, val;
        struct wiphy *wiphy = wlc_hw->wlc->wiphy;

        BCMMSG(wiphy, "wl%d\n", wlc_hw->unit);

        regs = wlc_hw->regs;

        /* Validate dchip register access */

        W_REG(&regs->objaddr, OBJADDR_SHM_SEL | 0);
        (void)R_REG(&regs->objaddr);
        w = R_REG(&regs->objdata);

        /* Can we write and read back a 32bit register? */
        W_REG(&regs->objaddr, OBJADDR_SHM_SEL | 0);
        (void)R_REG(&regs->objaddr);
        W_REG(&regs->objdata, (u32) 0xaa5555aa);

        W_REG(&regs->objaddr, OBJADDR_SHM_SEL | 0);
        (void)R_REG(&regs->objaddr);
        val = R_REG(&regs->objdata);
        if (val != (u32) 0xaa5555aa) {
                wiphy_err(wiphy, "wl%d: validate_chip_access: SHM = 0x%x, "
                          "expected 0xaa5555aa\n", wlc_hw->unit, val);
                return false;
        }

        W_REG(&regs->objaddr, OBJADDR_SHM_SEL | 0);
        (void)R_REG(&regs->objaddr);
        W_REG(&regs->objdata, (u32) 0x55aaaa55);

        W_REG(&regs->objaddr, OBJADDR_SHM_SEL | 0);
        (void)R_REG(&regs->objaddr);
        val = R_REG(&regs->objdata);
        if (val != (u32) 0x55aaaa55) {
                wiphy_err(wiphy, "wl%d: validate_chip_access: SHM = 0x%x, "
                          "expected 0x55aaaa55\n", wlc_hw->unit, val);
                return false;
        }

        W_REG(&regs->objaddr, OBJADDR_SHM_SEL | 0);
        (void)R_REG(&regs->objaddr);
        W_REG(&regs->objdata, w);

        /* clear CFPStart */
        W_REG(&regs->tsf_cfpstart, 0);

        w = R_REG(&regs->maccontrol);
        if ((w != (MCTL_IHR_EN | MCTL_WAKE)) &&
            (w != (MCTL_IHR_EN | MCTL_GMODE | MCTL_WAKE))) {
                wiphy_err(wiphy, "wl%d: validate_chip_access: maccontrol = "
                          "0x%x, expected 0x%x or 0x%x\n", wlc_hw->unit, w,
                          (MCTL_IHR_EN | MCTL_WAKE),
                          (MCTL_IHR_EN | MCTL_GMODE | MCTL_WAKE));
                return false;
        }

        return true;
}

#define PHYPLL_WAIT_US  100000

void brcms_b_core_phypll_ctl(struct brcms_c_hw_info *wlc_hw, bool on)
{
        d11regs_t *regs;
        u32 tmp;

        BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);

        tmp = 0;
        regs = wlc_hw->regs;

        if (on) {
                if ((wlc_hw->sih->chip == BCM4313_CHIP_ID)) {
                        OR_REG(&regs->clk_ctl_st,
                               (CCS_ERSRC_REQ_HT | CCS_ERSRC_REQ_D11PLL |
                                CCS_ERSRC_REQ_PHYPLL));
                        SPINWAIT((R_REG(&regs->clk_ctl_st) &
                                  (CCS_ERSRC_AVAIL_HT)) != (CCS_ERSRC_AVAIL_HT),
                                 PHYPLL_WAIT_US);

                        tmp = R_REG(&regs->clk_ctl_st);
                        if ((tmp & (CCS_ERSRC_AVAIL_HT)) !=
                            (CCS_ERSRC_AVAIL_HT)) {
                                wiphy_err(wlc_hw->wlc->wiphy, "%s: turn on PHY"
                                          " PLL failed\n", __func__);
                        }
                } else {
                        OR_REG(&regs->clk_ctl_st,
                               (CCS_ERSRC_REQ_D11PLL | CCS_ERSRC_REQ_PHYPLL));
                        SPINWAIT((R_REG(&regs->clk_ctl_st) &
                                  (CCS_ERSRC_AVAIL_D11PLL |
                                   CCS_ERSRC_AVAIL_PHYPLL)) !=
                                 (CCS_ERSRC_AVAIL_D11PLL |
                                  CCS_ERSRC_AVAIL_PHYPLL), PHYPLL_WAIT_US);

                        tmp = R_REG(&regs->clk_ctl_st);
                        if ((tmp &
                             (CCS_ERSRC_AVAIL_D11PLL | CCS_ERSRC_AVAIL_PHYPLL))
                            !=
                            (CCS_ERSRC_AVAIL_D11PLL | CCS_ERSRC_AVAIL_PHYPLL)) {
                                wiphy_err(wlc_hw->wlc->wiphy, "%s: turn on "
                                          "PHY PLL failed\n", __func__);
                        }
                }
        } else {
                /* Since the PLL may be shared, other cores can still be requesting it;
                 * so we'll deassert the request but not wait for status to comply.
                 */
                AND_REG(&regs->clk_ctl_st, ~CCS_ERSRC_REQ_PHYPLL);
                tmp = R_REG(&regs->clk_ctl_st);
        }
}

void brcms_c_coredisable(struct brcms_c_hw_info *wlc_hw)
{
        bool dev_gone;

        BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);

        dev_gone = DEVICEREMOVED(wlc_hw->wlc);

        if (dev_gone)
                return;

        if (wlc_hw->noreset)
                return;

        /* radio off */
        wlc_phy_switch_radio(wlc_hw->band->pi, OFF);

        /* turn off analog core */
        wlc_phy_anacore(wlc_hw->band->pi, OFF);

        /* turn off PHYPLL to save power */
        brcms_b_core_phypll_ctl(wlc_hw, false);

        /* No need to set wlc->pub->radio_active = OFF
         * because this function needs down capability and
         * radio_active is designed for BCMNODOWN.
         */

        /* remove gpio controls */
        if (wlc_hw->ucode_dbgsel)
                ai_gpiocontrol(wlc_hw->sih, ~0, 0, GPIO_DRV_PRIORITY);

        wlc_hw->clk = false;
        ai_core_disable(wlc_hw->sih, 0);
        wlc_phy_hw_clk_state_upd(wlc_hw->band->pi, false);
}

/* power both the pll and external oscillator on/off */
static void brcms_b_xtal(struct brcms_c_hw_info *wlc_hw, bool want)
{
        BCMMSG(wlc_hw->wlc->wiphy, "wl%d: want %d\n", wlc_hw->unit, want);

        /* dont power down if plldown is false or we must poll hw radio disable */
        if (!want && wlc_hw->pllreq)
                return;

        if (wlc_hw->sih)
                ai_clkctl_xtal(wlc_hw->sih, XTAL | PLL, want);

        wlc_hw->sbclk = want;
        if (!wlc_hw->sbclk) {
                wlc_hw->clk = false;
                if (wlc_hw->band && wlc_hw->band->pi)
                        wlc_phy_hw_clk_state_upd(wlc_hw->band->pi, false);
        }
}

static void brcms_c_flushqueues(struct brcms_c_info *wlc)
{
        struct brcms_c_hw_info *wlc_hw = wlc->hw;
        uint i;

        wlc->txpend16165war = 0;

        /* free any posted tx packets */
        for (i = 0; i < NFIFO; i++)
                if (wlc_hw->di[i]) {
                        dma_txreclaim(wlc_hw->di[i], DMA_RANGE_ALL);
                        TXPKTPENDCLR(wlc, i);
                        BCMMSG(wlc->wiphy, "pktpend fifo %d clrd\n", i);
                }

        /* free any posted rx packets */
        dma_rxreclaim(wlc_hw->di[RX_FIFO]);
}

u16 brcms_b_read_shm(struct brcms_c_hw_info *wlc_hw, uint offset)
{
        return brcms_b_read_objmem(wlc_hw, offset, OBJADDR_SHM_SEL);
}

void brcms_b_write_shm(struct brcms_c_hw_info *wlc_hw, uint offset, u16 v)
{
        brcms_b_write_objmem(wlc_hw, offset, v, OBJADDR_SHM_SEL);
}

static u16
brcms_b_read_objmem(struct brcms_c_hw_info *wlc_hw, uint offset, u32 sel)
{
        d11regs_t *regs = wlc_hw->regs;
        volatile u16 *objdata_lo = (volatile u16 *)&regs->objdata;
        volatile u16 *objdata_hi = objdata_lo + 1;
        u16 v;

        W_REG(&regs->objaddr, sel | (offset >> 2));
        (void)R_REG(&regs->objaddr);
        if (offset & 2) {
                v = R_REG(objdata_hi);
        } else {
                v = R_REG(objdata_lo);
        }

        return v;
}

static void
brcms_b_write_objmem(struct brcms_c_hw_info *wlc_hw, uint offset, u16 v,
                     u32 sel)
{
        d11regs_t *regs = wlc_hw->regs;
        volatile u16 *objdata_lo = (volatile u16 *)&regs->objdata;
        volatile u16 *objdata_hi = objdata_lo + 1;

        W_REG(&regs->objaddr, sel | (offset >> 2));
        (void)R_REG(&regs->objaddr);
        if (offset & 2) {
                W_REG(objdata_hi, v);
        } else {
                W_REG(objdata_lo, v);
        }
}

/* Copy a buffer to shared memory of specified type .
 * SHM 'offset' needs to be an even address and
 * Buffer length 'len' must be an even number of bytes
 * 'sel' selects the type of memory
 */
void
brcms_b_copyto_objmem(struct brcms_c_hw_info *wlc_hw, uint offset,
                      const void *buf, int len, u32 sel)
{
        u16 v;
        const u8 *p = (const u8 *)buf;
        int i;

        if (len <= 0 || (offset & 1) || (len & 1))
                return;

        for (i = 0; i < len; i += 2) {
                v = p[i] | (p[i + 1] << 8);
                brcms_b_write_objmem(wlc_hw, offset + i, v, sel);
        }
}

/* Copy a piece of shared memory of specified type to a buffer .
 * SHM 'offset' needs to be an even address and
 * Buffer length 'len' must be an even number of bytes
 * 'sel' selects the type of memory
 */
void
brcms_b_copyfrom_objmem(struct brcms_c_hw_info *wlc_hw, uint offset, void *buf,
                         int len, u32 sel)
{
        u16 v;
        u8 *p = (u8 *) buf;
        int i;

        if (len <= 0 || (offset & 1) || (len & 1))
                return;

        for (i = 0; i < len; i += 2) {
                v = brcms_b_read_objmem(wlc_hw, offset + i, sel);
                p[i] = v & 0xFF;
                p[i + 1] = (v >> 8) & 0xFF;
        }
}

void brcms_b_copyfrom_vars(struct brcms_c_hw_info *wlc_hw, char **buf,
                           uint *len)
{
        BCMMSG(wlc_hw->wlc->wiphy, "nvram vars totlen=%d\n",
                wlc_hw->vars_size);

        *buf = wlc_hw->vars;
        *len = wlc_hw->vars_size;
}

void brcms_b_retrylimit_upd(struct brcms_c_hw_info *wlc_hw, u16 SRL, u16 LRL)
{
        wlc_hw->SRL = SRL;
        wlc_hw->LRL = LRL;

        /* write retry limit to SCR, shouldn't need to suspend */
        if (wlc_hw->up) {
                W_REG(&wlc_hw->regs->objaddr,
                      OBJADDR_SCR_SEL | S_DOT11_SRC_LMT);
                (void)R_REG(&wlc_hw->regs->objaddr);
                W_REG(&wlc_hw->regs->objdata, wlc_hw->SRL);
                W_REG(&wlc_hw->regs->objaddr,
                      OBJADDR_SCR_SEL | S_DOT11_LRC_LMT);
                (void)R_REG(&wlc_hw->regs->objaddr);
                W_REG(&wlc_hw->regs->objdata, wlc_hw->LRL);
        }
}

void brcms_b_pllreq(struct brcms_c_hw_info *wlc_hw, bool set, mbool req_bit)
{
        if (set) {
                if (mboolisset(wlc_hw->pllreq, req_bit))
                        return;

                mboolset(wlc_hw->pllreq, req_bit);

                if (mboolisset(wlc_hw->pllreq, WLC_PLLREQ_FLIP)) {
                        if (!wlc_hw->sbclk) {
                                brcms_b_xtal(wlc_hw, ON);
                        }
                }
        } else {
                if (!mboolisset(wlc_hw->pllreq, req_bit))
                        return;

                mboolclr(wlc_hw->pllreq, req_bit);

                if (mboolisset(wlc_hw->pllreq, WLC_PLLREQ_FLIP)) {
                        if (wlc_hw->sbclk) {
                                brcms_b_xtal(wlc_hw, OFF);
                        }
                }
        }

        return;
}

u16 brcms_b_rate_shm_offset(struct brcms_c_hw_info *wlc_hw, u8 rate)
{
        u16 table_ptr;
        u8 phy_rate, index;

        /* get the phy specific rate encoding for the PLCP SIGNAL field */
        if (IS_OFDM(rate))
                table_ptr = M_RT_DIRMAP_A;
        else
                table_ptr = M_RT_DIRMAP_B;

        /* for a given rate, the LS-nibble of the PLCP SIGNAL field is
         * the index into the rate table.
         */
        phy_rate = rate_info[rate] & WLC_RATE_MASK;
        index = phy_rate & 0xf;

        /* Find the SHM pointer to the rate table entry by looking in the
         * Direct-map Table
         */
        return 2 * brcms_b_read_shm(wlc_hw, table_ptr + (index * 2));
}

void brcms_b_antsel_set(struct brcms_c_hw_info *wlc_hw, u32 antsel_avail)
{
        wlc_hw->antsel_avail = antsel_avail;
}