ar9285_attach.c

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/*-
 * SPDX-License-Identifier: ISC
 *
 * Copyright (c) 2008-2009 Sam Leffler, Errno Consulting
 * Copyright (c) 2008 Atheros Communications, Inc.
 *
 * 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.
 *
 * $FreeBSD$
 */
#include "opt_ah.h"
 
#include "ah.h"
#include "ah_internal.h"
#include "ah_devid.h"
 
#include "ah_eeprom_v4k.h"              /* XXX for tx/rx gain */
 
#include "ar9002/ar9280.h"
#include "ar9002/ar9285.h"
#include "ar5416/ar5416reg.h"
#include "ar5416/ar5416phy.h"
 
#include "ar9002/ar9285.ini"
#include "ar9002/ar9285v2.ini"
#include "ar9002/ar9280v2.ini"          /* XXX ini for tx/rx gain */
 
#include "ar9002/ar9285_cal.h"
#include "ar9002/ar9285_phy.h"
#include "ar9002/ar9285_diversity.h"
 
static const HAL_PERCAL_DATA ar9280_iq_cal = {          /* single sample */
        .calName = "IQ", .calType = IQ_MISMATCH_CAL,
        .calNumSamples  = MIN_CAL_SAMPLES,
        .calCountMax    = PER_MAX_LOG_COUNT,
        .calCollect     = ar5416IQCalCollect,
        .calPostProc    = ar5416IQCalibration
};
static const HAL_PERCAL_DATA ar9280_adc_gain_cal = {    /* single sample */
        .calName = "ADC Gain", .calType = ADC_GAIN_CAL,
        .calNumSamples  = MIN_CAL_SAMPLES,
        .calCountMax    = PER_MIN_LOG_COUNT,
        .calCollect     = ar5416AdcGainCalCollect,
        .calPostProc    = ar5416AdcGainCalibration
};
static const HAL_PERCAL_DATA ar9280_adc_dc_cal = {      /* single sample */
        .calName = "ADC DC", .calType = ADC_DC_CAL,
        .calNumSamples  = MIN_CAL_SAMPLES,
        .calCountMax    = PER_MIN_LOG_COUNT,
        .calCollect     = ar5416AdcDcCalCollect,
        .calPostProc    = ar5416AdcDcCalibration
};
static const HAL_PERCAL_DATA ar9280_adc_init_dc_cal = {
        .calName = "ADC Init DC", .calType = ADC_DC_INIT_CAL,
        .calNumSamples  = MIN_CAL_SAMPLES,
        .calCountMax    = INIT_LOG_COUNT,
        .calCollect     = ar5416AdcDcCalCollect,
        .calPostProc    = ar5416AdcDcCalibration
};
 
static void ar9285ConfigPCIE(struct ath_hal *ah, HAL_BOOL restore,
                HAL_BOOL power_off);
static void ar9285DisablePCIE(struct ath_hal *ah);
static HAL_BOOL ar9285FillCapabilityInfo(struct ath_hal *ah);
static void ar9285WriteIni(struct ath_hal *ah,
        const struct ieee80211_channel *chan);
 
static void
ar9285AniSetup(struct ath_hal *ah)
{
        /*
         * These are the parameters from the AR5416 ANI code;
         * they likely need quite a bit of adjustment for the
         * AR9285.
         */
        static const struct ar5212AniParams aniparams = {
                .maxNoiseImmunityLevel  = 4,    /* levels 0..4 */
                .totalSizeDesired       = { -55, -55, -55, -55, -62 },
                .coarseHigh             = { -14, -14, -14, -14, -12 },
                .coarseLow              = { -64, -64, -64, -64, -70 },
                .firpwr                 = { -78, -78, -78, -78, -80 },
                .maxSpurImmunityLevel   = 7,
                .cycPwrThr1             = { 2, 4, 6, 8, 10, 12, 14, 16 },
                .maxFirstepLevel        = 2,    /* levels 0..2 */
                .firstep                = { 0, 4, 8 },
                .ofdmTrigHigh           = 500,
                .ofdmTrigLow            = 200,
                .cckTrigHigh            = 200,
                .cckTrigLow             = 100,
                .rssiThrHigh            = 40,
                .rssiThrLow             = 7,
                .period                 = 100,
        };
        /* NB: disable ANI noise immmunity for reliable RIFS rx */
        AH5416(ah)->ah_ani_function &= ~(1 << HAL_ANI_NOISE_IMMUNITY_LEVEL);
 
        ar5416AniAttach(ah, &aniparams, &aniparams, AH_TRUE);
}
 
static const char * ar9285_lna_conf[] = {
        "LNA1-LNA2",
        "LNA2",
        "LNA1",
        "LNA1+LNA2",
};
 
static void
ar9285_eeprom_print_diversity_settings(struct ath_hal *ah)
{
        const HAL_EEPROM_v4k *ee = AH_PRIVATE(ah)->ah_eeprom;
        const MODAL_EEP4K_HEADER *pModal = &ee->ee_base.modalHeader;
 
        ath_hal_printf(ah, "[ath] AR9285 Main LNA config: %s\n",
            ar9285_lna_conf[(pModal->antdiv_ctl2 >> 2) & 0x3]);
        ath_hal_printf(ah, "[ath] AR9285 Alt LNA config: %s\n",
            ar9285_lna_conf[pModal->antdiv_ctl2 & 0x3]);
        ath_hal_printf(ah, "[ath] LNA diversity %s, Diversity %s\n",
            ((pModal->antdiv_ctl1 & 0x1) ? "enabled" : "disabled"),
            ((pModal->antdiv_ctl1 & 0x8) ? "enabled" : "disabled"));
}
 
/*
 * Attach for an AR9285 part.
 */
static struct ath_hal *
ar9285Attach(uint16_t devid, HAL_SOFTC sc,
        HAL_BUS_TAG st, HAL_BUS_HANDLE sh, uint16_t *eepromdata,
        HAL_OPS_CONFIG *ah_config,
        HAL_STATUS *status)
{
        struct ath_hal_9285 *ahp9285;
        struct ath_hal_5212 *ahp;
        struct ath_hal *ah;
        uint32_t val;
        HAL_STATUS ecode;
        HAL_BOOL rfStatus;
 
        HALDEBUG(AH_NULL, HAL_DEBUG_ATTACH, "%s: sc %p st %p sh %p\n",
            __func__, sc, (void*) st, (void*) sh);
 
        /* NB: memory is returned zero'd */
        ahp9285 = ath_hal_malloc(sizeof (struct ath_hal_9285));
        if (ahp9285 == AH_NULL) {
                HALDEBUG(AH_NULL, HAL_DEBUG_ANY,
                    "%s: cannot allocate memory for state block\n", __func__);
                *status = HAL_ENOMEM;
                return AH_NULL;
        }
        ahp = AH5212(ahp9285);
        ah = &ahp->ah_priv.h;
 
        ar5416InitState(AH5416(ah), devid, sc, st, sh, status);
 
        /*
         * Use the "local" EEPROM data given to us by the higher layers.
         * This is a private copy out of system flash. The Linux ath9k
         * commit for the initial AR9130 support mentions MMIO flash
         * access is "unreliable." -adrian
         */
        if (eepromdata != AH_NULL) {
                AH_PRIVATE(ah)->ah_eepromRead = ath_hal_EepromDataRead;
                AH_PRIVATE(ah)->ah_eepromWrite = NULL;
                ah->ah_eepromdata = eepromdata;
        }
 
        /* override with 9285 specific state */
        AH5416(ah)->ah_initPLL = ar9280InitPLL;
        AH5416(ah)->ah_btCoexSetDiversity = ar9285BTCoexAntennaDiversity;
 
        ah->ah_setAntennaSwitch         = ar9285SetAntennaSwitch;
        ah->ah_configPCIE               = ar9285ConfigPCIE;
        ah->ah_disablePCIE              = ar9285DisablePCIE;
        ah->ah_setTxPower               = ar9285SetTransmitPower;
        ah->ah_setBoardValues           = ar9285SetBoardValues;
        ah->ah_btCoexSetParameter       = ar9285BTCoexSetParameter;
        ah->ah_divLnaConfGet            = ar9285_antdiv_comb_conf_get;
        ah->ah_divLnaConfSet            = ar9285_antdiv_comb_conf_set;
 
        AH5416(ah)->ah_cal.iqCalData.calData = &ar9280_iq_cal;
        AH5416(ah)->ah_cal.adcGainCalData.calData = &ar9280_adc_gain_cal;
        AH5416(ah)->ah_cal.adcDcCalData.calData = &ar9280_adc_dc_cal;
        AH5416(ah)->ah_cal.adcDcCalInitData.calData = &ar9280_adc_init_dc_cal;
        AH5416(ah)->ah_cal.suppCals = ADC_GAIN_CAL | ADC_DC_CAL | IQ_MISMATCH_CAL;
 
        AH5416(ah)->ah_spurMitigate     = ar9280SpurMitigate;
        AH5416(ah)->ah_writeIni         = ar9285WriteIni;
        AH5416(ah)->ah_rx_chainmask     = AR9285_DEFAULT_RXCHAINMASK;
        AH5416(ah)->ah_tx_chainmask     = AR9285_DEFAULT_TXCHAINMASK;
 
        ahp->ah_maxTxTrigLev            = MAX_TX_FIFO_THRESHOLD >> 1;
 
        if (!ar5416SetResetReg(ah, HAL_RESET_POWER_ON)) {
                /* reset chip */
                HALDEBUG(ah, HAL_DEBUG_ANY, "%s: couldn't reset chip\n",
                    __func__);
                ecode = HAL_EIO;
                goto bad;
        }
 
        if (!ar5416SetPowerMode(ah, HAL_PM_AWAKE, AH_TRUE)) {
                HALDEBUG(ah, HAL_DEBUG_ANY, "%s: couldn't wakeup chip\n",
                    __func__);
                ecode = HAL_EIO;
                goto bad;
        }
        /* Read Revisions from Chips before taking out of reset */
        val = OS_REG_READ(ah, AR_SREV);
        HALDEBUG(ah, HAL_DEBUG_ATTACH,
            "%s: ID 0x%x VERSION 0x%x TYPE 0x%x REVISION 0x%x\n",
            __func__, MS(val, AR_XSREV_ID), MS(val, AR_XSREV_VERSION),
            MS(val, AR_XSREV_TYPE), MS(val, AR_XSREV_REVISION));
        /* NB: include chip type to differentiate from pre-Sowl versions */
        AH_PRIVATE(ah)->ah_macVersion =
            (val & AR_XSREV_VERSION) >> AR_XSREV_TYPE_S;
        AH_PRIVATE(ah)->ah_macRev = MS(val, AR_XSREV_REVISION);
        AH_PRIVATE(ah)->ah_ispcie = (val & AR_XSREV_TYPE_HOST_MODE) == 0;
 
        /* setup common ini data; rf backends handle remainder */
        if (AR_SREV_KITE_12_OR_LATER(ah)) {
                HAL_INI_INIT(&ahp->ah_ini_modes, ar9285Modes_v2, 6);
                HAL_INI_INIT(&ahp->ah_ini_common, ar9285Common_v2, 2);
                HAL_INI_INIT(&AH5416(ah)->ah_ini_pcieserdes,
                    ar9285PciePhy_clkreq_always_on_L1_v2, 2);
        } else {
                HAL_INI_INIT(&ahp->ah_ini_modes, ar9285Modes, 6);
                HAL_INI_INIT(&ahp->ah_ini_common, ar9285Common, 2);
                HAL_INI_INIT(&AH5416(ah)->ah_ini_pcieserdes,
                    ar9285PciePhy_clkreq_always_on_L1, 2);
        }
        ar5416AttachPCIE(ah);
 
        /* Attach methods that require MAC version/revision info */
        if (AR_SREV_KITE_12_OR_LATER(ah))
                AH5416(ah)->ah_cal_initcal      = ar9285InitCalHardware;
        if (AR_SREV_KITE_11_OR_LATER(ah))
                AH5416(ah)->ah_cal_pacal        = ar9002_hw_pa_cal;
 
        ecode = ath_hal_v4kEepromAttach(ah);
        if (ecode != HAL_OK)
                goto bad;
 
        if (!ar5416ChipReset(ah, AH_NULL, HAL_RESET_NORMAL)) {  /* reset chip */
                HALDEBUG(ah, HAL_DEBUG_ANY, "%s: chip reset failed\n",
                    __func__);
                ecode = HAL_EIO;
                goto bad;
        }
 
        AH_PRIVATE(ah)->ah_phyRev = OS_REG_READ(ah, AR_PHY_CHIP_ID);
 
        if (!ar5212ChipTest(ah)) {
                HALDEBUG(ah, HAL_DEBUG_ANY, "%s: hardware self-test failed\n",
                    __func__);
                ecode = HAL_ESELFTEST;
                goto bad;
        }
 
        /*
         * Set correct Baseband to analog shift
         * setting to access analog chips.
         */
        OS_REG_WRITE(ah, AR_PHY(0), 0x00000007);
 
        /* Read Radio Chip Rev Extract */
        AH_PRIVATE(ah)->ah_analog5GhzRev = ar5416GetRadioRev(ah);
        switch (AH_PRIVATE(ah)->ah_analog5GhzRev & AR_RADIO_SREV_MAJOR) {
        case AR_RAD2133_SREV_MAJOR:     /* Sowl: 2G/3x3 */
        case AR_RAD5133_SREV_MAJOR:     /* Sowl: 2+5G/3x3 */
                break;
        default:
                if (AH_PRIVATE(ah)->ah_analog5GhzRev == 0) {
                        AH_PRIVATE(ah)->ah_analog5GhzRev =
                                AR_RAD5133_SREV_MAJOR;
                        break;
                }
#ifdef AH_DEBUG
                HALDEBUG(ah, HAL_DEBUG_ANY,
                    "%s: 5G Radio Chip Rev 0x%02X is not supported by "
                    "this driver\n", __func__,
                    AH_PRIVATE(ah)->ah_analog5GhzRev);
                ecode = HAL_ENOTSUPP;
                goto bad;
#endif
        }
        rfStatus = ar9285RfAttach(ah, &ecode);
        if (!rfStatus) {
                HALDEBUG(ah, HAL_DEBUG_ANY, "%s: RF setup failed, status %u\n",
                    __func__, ecode);
                goto bad;
        }
 
        HAL_INI_INIT(&ahp9285->ah_ini_rxgain, ar9280Modes_original_rxgain_v2,
            6);
 
        if (AR_SREV_9285E_20(ah))
                ath_hal_printf(ah, "[ath] AR9285E_20 detected; using XE TX gain tables\n");
 
        /* setup txgain table */
        switch (ath_hal_eepromGet(ah, AR_EEP_TXGAIN_TYPE, AH_NULL)) {
        case AR5416_EEP_TXGAIN_HIGH_POWER:
                if (AR_SREV_9285E_20(ah))
                        HAL_INI_INIT(&ahp9285->ah_ini_txgain,
                            ar9285Modes_XE2_0_high_power, 6);
                else
                        HAL_INI_INIT(&ahp9285->ah_ini_txgain,
                            ar9285Modes_high_power_tx_gain_v2, 6);
                break;
        case AR5416_EEP_TXGAIN_ORIG:
                if (AR_SREV_9285E_20(ah))
                        HAL_INI_INIT(&ahp9285->ah_ini_txgain,
                            ar9285Modes_XE2_0_normal_power, 6);
                else
                        HAL_INI_INIT(&ahp9285->ah_ini_txgain,
                            ar9285Modes_original_tx_gain_v2, 6);
                break;
        default:
                HALASSERT(AH_FALSE);
                goto bad;               /* XXX ? try to continue */
        }
 
        /*
         * Got everything we need now to setup the capabilities.
         */
        if (!ar9285FillCapabilityInfo(ah)) {
                ecode = HAL_EEREAD;
                goto bad;
        }
 
        /*
         * Print out the EEPROM antenna configuration mapping.
         * Some devices have a hard-coded LNA configuration profile;
         * others enable diversity.
         */
        ar9285_eeprom_print_diversity_settings(ah);
 
        /* Print out whether the EEPROM settings enable AR9285 diversity */
        if (ar9285_check_div_comb(ah)) {
                ath_hal_printf(ah, "[ath] Enabling diversity for Kite\n");
        }
 
        /* Disable 11n for the AR2427 */
        if (devid == AR2427_DEVID_PCIE)
                AH_PRIVATE(ah)->ah_caps.halHTSupport = AH_FALSE;
 
        ecode = ath_hal_eepromGet(ah, AR_EEP_MACADDR, ahp->ah_macaddr);
        if (ecode != HAL_OK) {
                HALDEBUG(ah, HAL_DEBUG_ANY,
                    "%s: error getting mac address from EEPROM\n", __func__);
                goto bad;
        }
        /* XXX How about the serial number ? */
        /* Read Reg Domain */
        AH_PRIVATE(ah)->ah_currentRD =
            ath_hal_eepromGet(ah, AR_EEP_REGDMN_0, AH_NULL);
        /*
         * For Kite and later chipsets, the following bits are not
         * programmed in EEPROM and so are set as enabled always.
         */
        AH_PRIVATE(ah)->ah_currentRDext = AR9285_RDEXT_DEFAULT;
 
        /*
         * ah_miscMode is populated by ar5416FillCapabilityInfo()
         * starting from griffin. Set here to make sure that
         * AR_MISC_MODE_MIC_NEW_LOC_ENABLE is set before a GTK is
         * placed into hardware.
         */
        if (ahp->ah_miscMode != 0)
                OS_REG_WRITE(ah, AR_MISC_MODE, OS_REG_READ(ah, AR_MISC_MODE) | ahp->ah_miscMode);
 
        ar9285AniSetup(ah);                     /* Anti Noise Immunity */
 
        /* Setup noise floor min/max/nominal values */
        AH5416(ah)->nf_2g.max = AR_PHY_CCA_MAX_GOOD_VAL_9285_2GHZ;
        AH5416(ah)->nf_2g.min = AR_PHY_CCA_MIN_GOOD_VAL_9285_2GHZ;
        AH5416(ah)->nf_2g.nominal = AR_PHY_CCA_NOM_VAL_9285_2GHZ;
        /* XXX no 5ghz values? */
 
        ar5416InitNfHistBuff(AH5416(ah)->ah_cal.nfCalHist);
 
        HALDEBUG(ah, HAL_DEBUG_ATTACH, "%s: return\n", __func__);
 
        return ah;
bad:
        if (ah != AH_NULL)
                ah->ah_detach(ah);
        if (status)
                *status = ecode;
        return AH_NULL;
}
 
static void
ar9285ConfigPCIE(struct ath_hal *ah, HAL_BOOL restore, HAL_BOOL power_off)
{
        uint32_t val;
 
        /*
         * This workaround needs some integration work with the HAL
         * config parameters and the if_ath_pci.c glue.
         * Specifically, read the value of the PCI register 0x70c
         * (4 byte PCI config space register) and store it in ath_hal_war70c.
         * Then if it's non-zero, the below WAR would override register
         * 0x570c upon suspend/resume.
         */
#if 0
        if (AR_SREV_9285E_20(ah)) {
                val = AH_PRIVATE(ah)->ah_config.ath_hal_war70c;
                if (val) {
                        val &= 0xffff00ff;
                        val |= 0x6f00;
                        OS_REG_WRITE(ah, 0x570c, val);
                }
        }
#endif
 
        if (AH_PRIVATE(ah)->ah_ispcie && !restore) {
                ath_hal_ini_write(ah, &AH5416(ah)->ah_ini_pcieserdes, 1, 0);
                OS_DELAY(1000);
        }
 
        /*
         * Set PCIe workaround bits
         *
         * NOTE:
         *
         * In Merlin and Kite, bit 14 in WA register (disable L1) should only
         * be set when device enters D3 and be cleared when device comes back
         * to D0.
         */
        if (power_off) {                /* Power-off */
                OS_REG_CLR_BIT(ah, AR_PCIE_PM_CTRL, AR_PCIE_PM_CTRL_ENA);
 
                val = OS_REG_READ(ah, AR_WA);
 
                /*
                 * Disable bit 6 and 7 before entering D3 to prevent
                 * system hang.
                 */
                val &= ~(AR_WA_BIT6 | AR_WA_BIT7);
 
                /*
                 * See above: set AR_WA_D3_L1_DISABLE when entering D3 state.
                 *
                 * XXX The reference HAL does it this way - it only sets
                 * AR_WA_D3_L1_DISABLE if it's set in AR9280_WA_DEFAULT,
                 * which it (currently) isn't.  So the following statement
                 * is currently a NOP.
                 */
                if (AR9285_WA_DEFAULT & AR_WA_D3_L1_DISABLE)
                        val |= AR_WA_D3_L1_DISABLE;
 
                if (AR_SREV_9285E_20(ah))
                        val |= AR_WA_BIT23;
 
                OS_REG_WRITE(ah, AR_WA, val);
        } else {                        /* Power-on */
                val = AR9285_WA_DEFAULT;
                /*
                 * See note above: make sure L1_DISABLE is not set.
                 */
                val &= (~AR_WA_D3_L1_DISABLE);
 
                /* Software workaroud for ASPM system hang. */
                val |= (AR_WA_BIT6 | AR_WA_BIT7);
 
                if (AR_SREV_9285E_20(ah))
                        val |= AR_WA_BIT23;
 
                OS_REG_WRITE(ah, AR_WA, val);
 
                /* set bit 19 to allow forcing of pcie core into L1 state */
                OS_REG_SET_BIT(ah, AR_PCIE_PM_CTRL, AR_PCIE_PM_CTRL_ENA);
        }
}
 
static void
ar9285DisablePCIE(struct ath_hal *ah)
{
}
 
static void
ar9285WriteIni(struct ath_hal *ah, const struct ieee80211_channel *chan)
{
        u_int modesIndex, freqIndex;
        int regWrites = 0;
 
        /* Setup the indices for the next set of register array writes */
        /* XXX Ignore 11n dynamic mode on the AR5416 for the moment */
        freqIndex = 2;
        if (IEEE80211_IS_CHAN_HT40(chan))
                modesIndex = 3;
        else if (IEEE80211_IS_CHAN_108G(chan))
                modesIndex = 5;
        else
                modesIndex = 4;
 
        /* Set correct Baseband to analog shift setting to access analog chips. */
        OS_REG_WRITE(ah, AR_PHY(0), 0x00000007);
        OS_REG_WRITE(ah, AR_PHY_ADC_SERIAL_CTL, AR_PHY_SEL_INTERNAL_ADDAC);
        regWrites = ath_hal_ini_write(ah, &AH5212(ah)->ah_ini_modes,
            modesIndex, regWrites);
        if (AR_SREV_KITE_12_OR_LATER(ah)) {
                regWrites = ath_hal_ini_write(ah, &AH9285(ah)->ah_ini_txgain,
                    modesIndex, regWrites);
        }
        regWrites = ath_hal_ini_write(ah, &AH5212(ah)->ah_ini_common,
            1, regWrites);
}
 
/*
 * Fill all software cached or static hardware state information.
 * Return failure if capabilities are to come from EEPROM and
 * cannot be read.
 */
static HAL_BOOL
ar9285FillCapabilityInfo(struct ath_hal *ah)
{
        HAL_CAPABILITIES *pCap = &AH_PRIVATE(ah)->ah_caps;
 
        if (!ar5416FillCapabilityInfo(ah))
                return AH_FALSE;
        pCap->halNumGpioPins = 12;
        pCap->halWowSupport = AH_TRUE;
        pCap->halWowMatchPatternExact = AH_TRUE;
#if 0
        pCap->halWowMatchPatternDword = AH_TRUE;
#endif
        /* AR9285 has 2 antennas but is a 1x1 stream device */
        pCap->halTxStreams = 1;
        pCap->halRxStreams = 1;
 
        if (ar9285_check_div_comb(ah))
                pCap->halAntDivCombSupport = AH_TRUE;
 
        pCap->halCSTSupport = AH_TRUE;
        pCap->halRifsRxSupport = AH_TRUE;
        pCap->halRifsTxSupport = AH_TRUE;
        pCap->halRtsAggrLimit = 64*1024;        /* 802.11n max */
        pCap->halExtChanDfsSupport = AH_TRUE;
        pCap->halUseCombinedRadarRssi = AH_TRUE;
#if 1
        /* XXX bluetooth */
        pCap->halBtCoexSupport = AH_TRUE;
#endif
        pCap->halAutoSleepSupport = AH_FALSE;   /* XXX? */
        pCap->hal4kbSplitTransSupport = AH_FALSE;
        /* Disable this so Block-ACK works correctly */
        pCap->halHasRxSelfLinkedTail = AH_FALSE;
        pCap->halMbssidAggrSupport = AH_TRUE;  
        pCap->hal4AddrAggrSupport = AH_TRUE;
        pCap->halSpectralScanSupport = AH_TRUE;
        pCap->halRxUsingLnaMixing = AH_TRUE;
 
        if (AR_SREV_KITE_12_OR_LATER(ah))
                pCap->halPSPollBroken = AH_FALSE;
 
        /* Only RX STBC supported */
        pCap->halRxStbcSupport = 1;
        pCap->halTxStbcSupport = 0;
 
        return AH_TRUE;
}
 
static const char*
ar9285Probe(uint16_t vendorid, uint16_t devid)
{
        if (vendorid == ATHEROS_VENDOR_ID && devid == AR9285_DEVID_PCIE)
                return "Atheros 9285";
        if (vendorid == ATHEROS_VENDOR_ID && (devid == AR2427_DEVID_PCIE))
                return "Atheros 2427";
 
        return AH_NULL;
}
AH_CHIP(AR9285, ar9285Probe, ar9285Attach);