/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2007 Marvell Semiconductor, Inc.
 * Copyright (c) 2007 Sam Leffler, Errno Consulting
 * Copyright (c) 2008 Weongyo Jeong <weongyo@freebsd.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
 *    redistribution must be conditioned upon including a substantially
 *    similar Disclaimer requirement for further binary redistribution.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGES.
 */

#include <sys/cdefs.h>
#ifdef __FreeBSD__
#endif

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/endian.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/firmware.h>
#include <sys/socket.h>

#include <machine/bus.h>
#include <sys/bus.h>

#include <net/if.h>
#include <net/if_var.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/ethernet.h>

#include <net80211/ieee80211_var.h>

#include <dev/malo/if_malo.h>

#define MALO_WAITOK                             1
#define MALO_NOWAIT                             0

#define _CMD_SETUP(pCmd, _type, _cmd) do {                              \
        pCmd = (_type *)&mh->mh_cmdbuf[0];                              \
        memset(pCmd, 0, sizeof(_type));                                 \
        pCmd->cmdhdr.cmd = htole16(_cmd);                               \
        pCmd->cmdhdr.length = htole16(sizeof(_type));                   \
} while (0)

static __inline uint32_t
malo_hal_read4(struct malo_hal *mh, bus_size_t off)
{
        return bus_space_read_4(mh->mh_iot, mh->mh_ioh, off);
}

static __inline void
malo_hal_write4(struct malo_hal *mh, bus_size_t off, uint32_t val)
{
        bus_space_write_4(mh->mh_iot, mh->mh_ioh, off, val);
}

static void
malo_hal_load_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
{
        bus_addr_t *paddr = (bus_addr_t*) arg;

        KASSERT(error == 0, ("error %u on bus_dma callback", error));
        *paddr = segs->ds_addr;
}

/*
 * Setup for communication with the device.  We allocate
 * a command buffer and map it for bus dma use.  The pci
 * device id is used to identify whether the device has
 * SRAM on it (in which case f/w download must include a
 * memory controller reset).  All bus i/o operations happen
 * in BAR 1; the driver passes in the tag and handle we need.
 */
struct malo_hal *
malo_hal_attach(device_t dev, uint16_t devid,
    bus_space_handle_t ioh, bus_space_tag_t iot, bus_dma_tag_t tag)
{
        int error;
        struct malo_hal *mh;

        mh = malloc(sizeof(struct malo_hal), M_DEVBUF, M_NOWAIT | M_ZERO);
        if (mh == NULL)
                return NULL;

        mh->mh_dev = dev;
        mh->mh_ioh = ioh;
        mh->mh_iot = iot;

        snprintf(mh->mh_mtxname, sizeof(mh->mh_mtxname),
            "%s_hal", device_get_nameunit(dev));
        mtx_init(&mh->mh_mtx, mh->mh_mtxname, NULL, MTX_DEF);

        /*
         * Allocate the command buffer and map into the address
         * space of the h/w.  We request "coherent" memory which
         * will be uncached on some architectures.
         */
        error = bus_dma_tag_create(tag,         /* parent */
                       PAGE_SIZE, 0,            /* alignment, bounds */
                       BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
                       BUS_SPACE_MAXADDR,       /* highaddr */
                       NULL, NULL,              /* filter, filterarg */
                       MALO_CMDBUF_SIZE,        /* maxsize */
                       1,                       /* nsegments */
                       MALO_CMDBUF_SIZE,        /* maxsegsize */
                       BUS_DMA_ALLOCNOW,        /* flags */
                       NULL,                    /* lockfunc */
                       NULL,                    /* lockarg */
                       &mh->mh_dmat);
        if (error != 0) {
                device_printf(dev, "unable to allocate memory for cmd tag, "
                        "error %u\n", error);
                goto fail;
        }

        /* allocate descriptors */
        error = bus_dmamem_alloc(mh->mh_dmat, (void**) &mh->mh_cmdbuf,
                                 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, 
                                 &mh->mh_dmamap);
        if (error != 0) {
                device_printf(dev, "unable to allocate memory for cmd buffer, "
                        "error %u\n", error);
                goto fail;
        }

        error = bus_dmamap_load(mh->mh_dmat, mh->mh_dmamap,
                                mh->mh_cmdbuf, MALO_CMDBUF_SIZE,
                                malo_hal_load_cb, &mh->mh_cmdaddr,
                                BUS_DMA_NOWAIT);
        if (error != 0) {
                device_printf(dev, "unable to load cmd buffer, error %u\n",
                        error);
                goto fail;
        }

        return (mh);

fail:
        if (mh->mh_cmdbuf != NULL)
                bus_dmamem_free(mh->mh_dmat, mh->mh_cmdbuf,
                    mh->mh_dmamap);
        if (mh->mh_dmat)
                bus_dma_tag_destroy(mh->mh_dmat);
        free(mh, M_DEVBUF);

        return (NULL);
}

/*
 * Low level firmware cmd block handshake support.
 */

static void
malo_hal_send_cmd(struct malo_hal *mh)
{

        bus_dmamap_sync(mh->mh_dmat, mh->mh_dmamap,
            BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);

        malo_hal_write4(mh, MALO_REG_GEN_PTR, mh->mh_cmdaddr);
        malo_hal_read4(mh, MALO_REG_INT_CODE);

        malo_hal_write4(mh, MALO_REG_H2A_INTERRUPT_EVENTS,
            MALO_H2ARIC_BIT_DOOR_BELL);
}

static int
malo_hal_waitforcmd(struct malo_hal *mh, uint16_t cmd)
{
#define MAX_WAIT_FW_COMPLETE_ITERATIONS 10000
        int i;

        for (i = 0; i < MAX_WAIT_FW_COMPLETE_ITERATIONS; i++) {
                if (mh->mh_cmdbuf[0] == le16toh(cmd))
                        return 1;

                DELAY(1 * 1000);
        }

        return 0;
#undef MAX_WAIT_FW_COMPLETE_ITERATIONS
}

static int
malo_hal_execute_cmd(struct malo_hal *mh, unsigned short cmd)
{
        MALO_HAL_LOCK_ASSERT(mh);

        if ((mh->mh_flags & MHF_FWHANG) &&
            (mh->mh_debug & MALO_HAL_DEBUG_IGNHANG) == 0) {
                device_printf(mh->mh_dev, "firmware hung, skipping cmd 0x%x\n",
                        cmd);
                return ENXIO;
        }

        if (malo_hal_read4(mh, MALO_REG_INT_CODE) == 0xffffffff) {
                device_printf(mh->mh_dev, "%s: device not present!\n",
                    __func__);
                return EIO;
        }

        malo_hal_send_cmd(mh);
        if (!malo_hal_waitforcmd(mh, cmd | 0x8000)) {
                device_printf(mh->mh_dev,
                    "timeout waiting for f/w cmd 0x%x\n", cmd);
                mh->mh_flags |= MHF_FWHANG;
                return ETIMEDOUT;
        }

        bus_dmamap_sync(mh->mh_dmat, mh->mh_dmamap,
            BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);

        return 0;
}

static int
malo_hal_get_cal_table(struct malo_hal *mh, uint8_t annex, uint8_t index)
{
        struct malo_cmd_caltable *cmd;
        int ret;

        MALO_HAL_LOCK_ASSERT(mh);

        _CMD_SETUP(cmd, struct malo_cmd_caltable, MALO_HOSTCMD_GET_CALTABLE);
        cmd->annex = annex;
        cmd->index = index;

        ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_GET_CALTABLE);
        if (ret == 0 && cmd->caltbl[0] != annex && annex != 0 && annex != 255)
                ret = EIO;
        return ret;
}                                                         

static int
malo_hal_get_pwrcal_table(struct malo_hal *mh, struct malo_hal_caldata *cal)
{
        const uint8_t *data;
        int len;

        MALO_HAL_LOCK(mh);
        /* NB: we hold the lock so it's ok to use cmdbuf */
        data = ((const struct malo_cmd_caltable *) mh->mh_cmdbuf)->caltbl;
        if (malo_hal_get_cal_table(mh, 33, 0) == 0) {
                len = (data[2] | (data[3] << 8)) - 12;
                /* XXX validate len */
                memcpy(cal->pt_ratetable_20m, &data[12], len);  
        }
        mh->mh_flags |= MHF_CALDATA;
        MALO_HAL_UNLOCK(mh);

        return 0;
}

/*
 * Reset internal state after a firmware download.
 */
static int
malo_hal_resetstate(struct malo_hal *mh)
{
        /*
         * Fetch cal data for later use.
         * XXX may want to fetch other stuff too.
         */
        if ((mh->mh_flags & MHF_CALDATA) == 0)
                malo_hal_get_pwrcal_table(mh, &mh->mh_caldata);
        return 0;
}

static void
malo_hal_fw_reset(struct malo_hal *mh)
{

        if (malo_hal_read4(mh,  MALO_REG_INT_CODE) == 0xffffffff) {
                device_printf(mh->mh_dev, "%s: device not present!\n",
                    __func__);
                return;
        }

        malo_hal_write4(mh, MALO_REG_H2A_INTERRUPT_EVENTS, MALO_ISR_RESET);
        mh->mh_flags &= ~MHF_FWHANG;
}

static void
malo_hal_trigger_pcicmd(struct malo_hal *mh)
{

        bus_dmamap_sync(mh->mh_dmat, mh->mh_dmamap, BUS_DMASYNC_PREWRITE);

        malo_hal_write4(mh, MALO_REG_GEN_PTR, mh->mh_cmdaddr);
        malo_hal_read4(mh, MALO_REG_INT_CODE);

        malo_hal_write4(mh, MALO_REG_INT_CODE, 0x00);
        malo_hal_read4(mh, MALO_REG_INT_CODE);

        malo_hal_write4(mh, MALO_REG_H2A_INTERRUPT_EVENTS,
            MALO_H2ARIC_BIT_DOOR_BELL);
        malo_hal_read4(mh, MALO_REG_INT_CODE);
}

static int
malo_hal_waitfor(struct malo_hal *mh, uint32_t val)
{
        int i;

        for (i = 0; i < MALO_FW_MAX_NUM_CHECKS; i++) {
                DELAY(MALO_FW_CHECK_USECS);
                if (malo_hal_read4(mh, MALO_REG_INT_CODE) == val)
                        return 0;
        }

        return -1;
}

/*
 * Firmware block xmit when talking to the boot-rom.
 */
static int
malo_hal_send_helper(struct malo_hal *mh, int bsize,
    const void *data, size_t dsize, int waitfor)
{
        mh->mh_cmdbuf[0] = htole16(MALO_HOSTCMD_CODE_DNLD);
        mh->mh_cmdbuf[1] = htole16(bsize);
        memcpy(&mh->mh_cmdbuf[4], data , dsize);

        malo_hal_trigger_pcicmd(mh);

        if (waitfor == MALO_NOWAIT)
                goto pass;

        /* XXX 2000 vs 200 */
        if (malo_hal_waitfor(mh, MALO_INT_CODE_CMD_FINISHED) != 0) {
                device_printf(mh->mh_dev,
                    "%s: timeout waiting for CMD_FINISHED, INT_CODE 0x%x\n",
                    __func__, malo_hal_read4(mh, MALO_REG_INT_CODE));
                
                return ETIMEDOUT;
        }

pass:
        malo_hal_write4(mh, MALO_REG_INT_CODE, 0);

        return (0);
}

static int
malo_hal_fwload_helper(struct malo_hal *mh, char *helper)
{
        const struct firmware *fw;
        int error;

        fw = firmware_get(helper);
        if (fw == NULL) {
                device_printf(mh->mh_dev, "could not read microcode %s!\n",
                    helper);
                return (EIO);
        }

        device_printf(mh->mh_dev, "load %s firmware image (%zu bytes)\n",
            helper, fw->datasize);

        error = malo_hal_send_helper(mh, fw->datasize, fw->data, fw->datasize,
                MALO_WAITOK);
        if (error != 0)
                goto fail;

        /* tell the card we're done and... */
        error = malo_hal_send_helper(mh, 0, NULL, 0, MALO_NOWAIT);

fail:
        firmware_put(fw, FIRMWARE_UNLOAD);

        return (error);
}

/*
 * Firmware block xmit when talking to the 1st-stage loader.
 */
static int
malo_hal_send_main(struct malo_hal *mh, const void *data, size_t dsize,
    uint16_t seqnum, int waitfor)
{
        mh->mh_cmdbuf[0] = htole16(MALO_HOSTCMD_CODE_DNLD);
        mh->mh_cmdbuf[1] = htole16(dsize);
        mh->mh_cmdbuf[2] = htole16(seqnum);
        mh->mh_cmdbuf[3] = 0;
        memcpy(&mh->mh_cmdbuf[4], data, dsize);

        malo_hal_trigger_pcicmd(mh);

        if (waitfor == MALO_NOWAIT)
                goto pass;

        if (malo_hal_waitfor(mh, MALO_INT_CODE_CMD_FINISHED) != 0) {
                device_printf(mh->mh_dev,
                    "%s: timeout waiting for CMD_FINISHED, INT_CODE 0x%x\n",
                    __func__, malo_hal_read4(mh, MALO_REG_INT_CODE));

                return ETIMEDOUT;
        }

pass:
        malo_hal_write4(mh, MALO_REG_INT_CODE, 0);

        return 0;
}

static int
malo_hal_fwload_main(struct malo_hal *mh, char *firmware)
{
        const struct firmware *fw;
        const uint8_t *fp;
        int error;
        size_t count;
        uint16_t seqnum;
        uint32_t blocksize;

        error = 0;

        fw = firmware_get(firmware);
        if (fw == NULL) {
                device_printf(mh->mh_dev, "could not read firmware %s!\n",
                    firmware);
                return (EIO);
        }

        device_printf(mh->mh_dev, "load %s firmware image (%zu bytes)\n",
            firmware, fw->datasize);

        seqnum = 1;
        for (count = 0; count < fw->datasize; count += blocksize) {
                blocksize = MIN(256, fw->datasize - count);
                fp = (const uint8_t *)fw->data + count;

                error = malo_hal_send_main(mh, fp, blocksize, seqnum++,
                    MALO_NOWAIT);
                if (error != 0)
                        goto fail;
                DELAY(500);
        }
        
        /*
         * send a command with size 0 to tell that the firmware has been
         * uploaded
         */
        error = malo_hal_send_main(mh, NULL, 0, seqnum++, MALO_NOWAIT);
        DELAY(100);

fail:
        firmware_put(fw, FIRMWARE_UNLOAD);

        return (error);
}

int
malo_hal_fwload(struct malo_hal *mh, char *helper, char *firmware)
{
        int error, i;
        uint32_t fwreadysig, opmode;

        /*
         * NB: now malo(4) supports only STA mode.  It will be better if it
         * supports AP mode.
         */
        fwreadysig = MALO_HOSTCMD_STA_FWRDY_SIGNATURE;
        opmode = MALO_HOSTCMD_STA_MODE;

        malo_hal_fw_reset(mh);

        malo_hal_write4(mh, MALO_REG_A2H_INTERRUPT_CLEAR_SEL,
            MALO_A2HRIC_BIT_MASK);
        malo_hal_write4(mh, MALO_REG_A2H_INTERRUPT_CAUSE, 0x00);
        malo_hal_write4(mh, MALO_REG_A2H_INTERRUPT_MASK, 0x00);
        malo_hal_write4(mh, MALO_REG_A2H_INTERRUPT_STATUS_MASK,
            MALO_A2HRIC_BIT_MASK);

        error = malo_hal_fwload_helper(mh, helper);
        if (error != 0) {
                device_printf(mh->mh_dev, "failed to load bootrom loader.\n");
                goto fail;
        }

        DELAY(200 * MALO_FW_CHECK_USECS);

        error = malo_hal_fwload_main(mh, firmware);
        if (error != 0) {
                device_printf(mh->mh_dev, "failed to load firmware.\n");
                goto fail;
        }

        /*
         * Wait for firmware to startup; we monitor the INT_CODE register
         * waiting for a signature to written back indicating it's ready to go.
         */
        mh->mh_cmdbuf[1] = 0;

        if (opmode != MALO_HOSTCMD_STA_MODE)
                malo_hal_trigger_pcicmd(mh);
        
        for (i = 0; i < MALO_FW_MAX_NUM_CHECKS; i++) {
                malo_hal_write4(mh, MALO_REG_GEN_PTR, opmode);
                DELAY(MALO_FW_CHECK_USECS);
                if (malo_hal_read4(mh, MALO_REG_INT_CODE) == fwreadysig) {
                        malo_hal_write4(mh, MALO_REG_INT_CODE, 0x00);
                        return malo_hal_resetstate(mh);
                }
        }

        return ETIMEDOUT;
fail:
        malo_hal_fw_reset(mh);

        return (error);
}

/*
 * Return "hw specs".  Note this must be the first cmd MUST be done after
 * a firmware download or the f/w will lockup.
 */
int
malo_hal_gethwspecs(struct malo_hal *mh, struct malo_hal_hwspec *hw)
{
        struct malo_cmd_get_hwspec *cmd;
        int ret;

        MALO_HAL_LOCK(mh);

        _CMD_SETUP(cmd, struct malo_cmd_get_hwspec, MALO_HOSTCMD_GET_HW_SPEC);
        memset(&cmd->permaddr[0], 0xff, IEEE80211_ADDR_LEN);
        cmd->ul_fw_awakecookie = htole32((unsigned int)mh->mh_cmdaddr + 2048);

        ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_GET_HW_SPEC);
        if (ret == 0) {
                IEEE80211_ADDR_COPY(hw->macaddr, cmd->permaddr);
                hw->wcbbase[0] = le32toh(cmd->wcbbase0) & 0x0000ffff;
                hw->wcbbase[1] = le32toh(cmd->wcbbase1) & 0x0000ffff;
                hw->wcbbase[2] = le32toh(cmd->wcbbase2) & 0x0000ffff;
                hw->wcbbase[3] = le32toh(cmd->wcbbase3) & 0x0000ffff;
                hw->rxdesc_read = le32toh(cmd->rxpdrd_ptr)& 0x0000ffff;
                hw->rxdesc_write = le32toh(cmd->rxpdwr_ptr)& 0x0000ffff;
                hw->regioncode = le16toh(cmd->regioncode) & 0x00ff;
                hw->fw_releasenum = le32toh(cmd->fw_releasenum);
                hw->maxnum_wcb = le16toh(cmd->num_wcb);
                hw->maxnum_mcaddr = le16toh(cmd->num_mcastaddr);
                hw->num_antenna = le16toh(cmd->num_antenna);
                hw->hwversion = cmd->version;
                hw->hostinterface = cmd->hostif;
        }

        MALO_HAL_UNLOCK(mh);

        return ret;
}

void
malo_hal_detach(struct malo_hal *mh)
{

        bus_dmamem_free(mh->mh_dmat, mh->mh_cmdbuf, mh->mh_dmamap);
        bus_dma_tag_destroy(mh->mh_dmat);
        mtx_destroy(&mh->mh_mtx);
        free(mh, M_DEVBUF);
}

/*
 * Configure antenna use.  Takes effect immediately.
 *
 * XXX tx antenna setting ignored
 * XXX rx antenna setting should always be 3 (for now)
 */
int
malo_hal_setantenna(struct malo_hal *mh, enum malo_hal_antenna dirset, int ant)
{
        struct malo_cmd_rf_antenna *cmd;
        int ret;

        if (!(dirset == MHA_ANTENNATYPE_RX || dirset == MHA_ANTENNATYPE_TX))
                return EINVAL;

        MALO_HAL_LOCK(mh);

        _CMD_SETUP(cmd, struct malo_cmd_rf_antenna,
            MALO_HOSTCMD_802_11_RF_ANTENNA);
        cmd->action = htole16(dirset);
        if (ant == 0) {                 /* default to all/both antennae */
                /* XXX never reach now.  */
                ant = 3;
        }
        cmd->mode = htole16(ant);

        ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_802_11_RF_ANTENNA);

        MALO_HAL_UNLOCK(mh);

        return ret;
}

/*
 * Configure radio.  Takes effect immediately.
 *
 * XXX preamble installed after set fixed rate cmd
 */
int
malo_hal_setradio(struct malo_hal *mh, int onoff,
    enum malo_hal_preamble preamble)
{
        struct malo_cmd_radio_control *cmd;
        int ret;

        MALO_HAL_LOCK(mh);

        _CMD_SETUP(cmd, struct malo_cmd_radio_control,
            MALO_HOSTCMD_802_11_RADIO_CONTROL);
        cmd->action = htole16(MALO_HOSTCMD_ACT_GEN_SET);
        if (onoff == 0)
                cmd->control = 0;
        else
                cmd->control = htole16(preamble);
        cmd->radio_on = htole16(onoff);

        ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_802_11_RADIO_CONTROL);

        MALO_HAL_UNLOCK(mh);

        return ret;
}

/*
 * Set the interrupt mask.
 */
void
malo_hal_intrset(struct malo_hal *mh, uint32_t mask)
{

        malo_hal_write4(mh, MALO_REG_A2H_INTERRUPT_MASK, 0);
        (void)malo_hal_read4(mh, MALO_REG_INT_CODE);

        mh->mh_imask = mask;
        malo_hal_write4(mh, MALO_REG_A2H_INTERRUPT_MASK, mask);
        (void)malo_hal_read4(mh, MALO_REG_INT_CODE);
}

int
malo_hal_setchannel(struct malo_hal *mh, const struct malo_hal_channel *chan)
{
        struct malo_cmd_fw_set_rf_channel *cmd;
        int ret;

        MALO_HAL_LOCK(mh);

        _CMD_SETUP(cmd, struct malo_cmd_fw_set_rf_channel,
            MALO_HOSTCMD_SET_RF_CHANNEL);
        cmd->action = htole16(MALO_HOSTCMD_ACT_GEN_SET);
        cmd->cur_channel = chan->channel;

        ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_SET_RF_CHANNEL);

        MALO_HAL_UNLOCK(mh);

        return ret;
}

int
malo_hal_settxpower(struct malo_hal *mh, const struct malo_hal_channel *c)
{
        struct malo_cmd_rf_tx_power *cmd;
        const struct malo_hal_caldata *cal = &mh->mh_caldata;
        uint8_t chan = c->channel;
        uint16_t pow;
        int i, idx, ret;
        
        MALO_HAL_LOCK(mh);

        _CMD_SETUP(cmd, struct malo_cmd_rf_tx_power,
            MALO_HOSTCMD_802_11_RF_TX_POWER);
        cmd->action = htole16(MALO_HOSTCMD_ACT_GEN_SET_LIST);
        for (i = 0; i < 4; i++) {
                idx = (chan - 1) * 4 + i;
                pow = cal->pt_ratetable_20m[idx];
                cmd->power_levellist[i] = htole16(pow);
        }
        ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_802_11_RF_TX_POWER);

        MALO_HAL_UNLOCK(mh);

        return ret;
}

int
malo_hal_setpromisc(struct malo_hal *mh, int enable)
{
        /* XXX need host cmd */
        return 0;
}

int
malo_hal_setassocid(struct malo_hal *mh,
    const uint8_t bssid[IEEE80211_ADDR_LEN], uint16_t associd)
{
        struct malo_cmd_fw_set_aid *cmd;
        int ret;

        MALO_HAL_LOCK(mh);

        _CMD_SETUP(cmd, struct malo_cmd_fw_set_aid,
            MALO_HOSTCMD_SET_AID);
        cmd->cmdhdr.seqnum = 1;
        cmd->associd = htole16(associd);
        IEEE80211_ADDR_COPY(&cmd->macaddr[0], bssid);
        
        ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_SET_AID);
        MALO_HAL_UNLOCK(mh);
        return ret;
}

/*
 * Kick the firmware to tell it there are new tx descriptors
 * for processing.  The driver says what h/w q has work in
 * case the f/w ever gets smarter.
 */
void
malo_hal_txstart(struct malo_hal *mh, int qnum)
{
        bus_space_write_4(mh->mh_iot, mh->mh_ioh,
            MALO_REG_H2A_INTERRUPT_EVENTS, MALO_H2ARIC_BIT_PPA_READY);
        (void) bus_space_read_4(mh->mh_iot, mh->mh_ioh, MALO_REG_INT_CODE);
}

/*
 * Return the current ISR setting and clear the cause.
 */
void
malo_hal_getisr(struct malo_hal *mh, uint32_t *status)
{
        uint32_t cause;

        cause = bus_space_read_4(mh->mh_iot, mh->mh_ioh,
            MALO_REG_A2H_INTERRUPT_CAUSE);
        if (cause == 0xffffffff) {      /* card removed */
                cause = 0;
        } else if (cause != 0) {
                /* clear cause bits */
                bus_space_write_4(mh->mh_iot, mh->mh_ioh,
                    MALO_REG_A2H_INTERRUPT_CAUSE, cause &~ mh->mh_imask);
                (void) bus_space_read_4(mh->mh_iot, mh->mh_ioh,
                    MALO_REG_INT_CODE);
                cause &= mh->mh_imask;
        }

        *status = cause;
}

/*
 * Callback from the driver on a cmd done interrupt.  Nothing to do right
 * now as we spin waiting for cmd completion.
 */
void
malo_hal_cmddone(struct malo_hal *mh)
{
        /* NB : do nothing.  */
}

int
malo_hal_prescan(struct malo_hal *mh)
{
        struct malo_cmd_prescan *cmd;
        int ret;

        MALO_HAL_LOCK(mh);

        _CMD_SETUP(cmd, struct malo_cmd_prescan, MALO_HOSTCMD_SET_PRE_SCAN);
        cmd->cmdhdr.seqnum = 1;
        
        ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_SET_PRE_SCAN);

        MALO_HAL_UNLOCK(mh);

        return ret;
}

int
malo_hal_postscan(struct malo_hal *mh, uint8_t *macaddr, uint8_t ibsson)
{
        struct malo_cmd_postscan *cmd;
        int ret;

        MALO_HAL_LOCK(mh);

        _CMD_SETUP(cmd, struct malo_cmd_postscan, MALO_HOSTCMD_SET_POST_SCAN);
        cmd->cmdhdr.seqnum = 1;
        cmd->isibss = htole32(ibsson);
        IEEE80211_ADDR_COPY(&cmd->bssid[0], macaddr);

        ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_SET_POST_SCAN);

        MALO_HAL_UNLOCK(mh);

        return ret;
}

int
malo_hal_set_slot(struct malo_hal *mh, int is_short)
{
        int ret;
        struct malo_cmd_fw_setslot *cmd;

        MALO_HAL_LOCK(mh);

        _CMD_SETUP(cmd, struct malo_cmd_fw_setslot, MALO_HOSTCMD_SET_SLOT);
        cmd->action = htole16(MALO_HOSTCMD_ACT_GEN_SET);
        cmd->slot = (is_short == 1 ? 1 : 0);

        ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_SET_SLOT);

        MALO_HAL_UNLOCK(mh);

        return ret;
}

int
malo_hal_set_rate(struct malo_hal *mh, uint16_t curmode, uint8_t rate)
{
        int i, ret;
        struct malo_cmd_set_rate *cmd;

        MALO_HAL_LOCK(mh);

        _CMD_SETUP(cmd, struct malo_cmd_set_rate, MALO_HOSTCMD_SET_RATE);
        cmd->aprates[0] = 2;
        cmd->aprates[1] = 4;
        cmd->aprates[2] = 11;
        cmd->aprates[3] = 22;
        if (curmode == IEEE80211_MODE_11G) {
                cmd->aprates[4] = 0;            /* XXX reserved?  */
                cmd->aprates[5] = 12;
                cmd->aprates[6] = 18;
                cmd->aprates[7] = 24;
                cmd->aprates[8] = 36;
                cmd->aprates[9] = 48;
                cmd->aprates[10] = 72;
                cmd->aprates[11] = 96;
                cmd->aprates[12] = 108;
        }

        if (rate != 0) {
                /* fixed rate */
                for (i = 0; i < 13; i++) {
                        if (cmd->aprates[i] == rate) {
                                cmd->rateindex = i;
                                cmd->dataratetype = 1;
                                break;
                        }
                }
        }

        ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_SET_RATE);

        MALO_HAL_UNLOCK(mh);

        return ret;
}

int
malo_hal_setmcast(struct malo_hal *mh, int nmc, const uint8_t macs[])
{
        struct malo_cmd_mcast *cmd;
        int ret;

        if (nmc > MALO_HAL_MCAST_MAX)
                return EINVAL;

        MALO_HAL_LOCK(mh);

        _CMD_SETUP(cmd, struct malo_cmd_mcast, MALO_HOSTCMD_MAC_MULTICAST_ADR);
        memcpy(cmd->maclist, macs, nmc * IEEE80211_ADDR_LEN);
        cmd->numaddr = htole16(nmc);
        cmd->action = htole16(0xffff);

        ret = malo_hal_execute_cmd(mh, MALO_HOSTCMD_MAC_MULTICAST_ADR);

        MALO_HAL_UNLOCK(mh);

        return ret;
}