ath_hal/ar5212/ar5212_misc.c

/*
 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
 * Copyright (c) 2002-2008 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.
 *
 * $Id: ar5212_misc.c,v 1.8 2008/11/10 04:08:03 sam Exp $
 */
#include "opt_ah.h"

#ifdef AH_SUPPORT_AR5212

#include "ah.h"
#include "ah_internal.h"
#include "ah_devid.h"
#ifdef AH_DEBUG
#include "ah_desc.h"			/* NB: for HAL_PHYERR* */
#endif

#include "ar5212/ar5212.h"
#include "ar5212/ar5212reg.h"
#include "ar5212/ar5212phy.h"
#ifdef AH_SUPPORT_AR5311
#include "ar5212/ar5311reg.h"
#endif

#include "ah_eeprom_v3.h"

#define	AR_NUM_GPIO	6		/* 6 GPIO pins */
#define	AR_GPIOD_MASK	0x0000002F	/* GPIO data reg r/w mask */

extern void ar5212SetRateDurationTable(struct ath_hal *, HAL_CHANNEL *);

void
ar5212GetMacAddress(struct ath_hal *ah, uint8_t *mac)
{
	struct ath_hal_5212 *ahp = AH5212(ah);

	OS_MEMCPY(mac, ahp->ah_macaddr, IEEE80211_ADDR_LEN);
}

HAL_BOOL
ar5212SetMacAddress(struct ath_hal *ah, const uint8_t *mac)
{
	struct ath_hal_5212 *ahp = AH5212(ah);

	OS_MEMCPY(ahp->ah_macaddr, mac, IEEE80211_ADDR_LEN);
	return AH_TRUE;
}

void
ar5212GetBssIdMask(struct ath_hal *ah, uint8_t *mask)
{
	struct ath_hal_5212 *ahp = AH5212(ah);

	OS_MEMCPY(mask, ahp->ah_bssidmask, IEEE80211_ADDR_LEN);
}

HAL_BOOL
ar5212SetBssIdMask(struct ath_hal *ah, const uint8_t *mask)
{
	struct ath_hal_5212 *ahp = AH5212(ah);

	/* save it since it must be rewritten on reset */
	OS_MEMCPY(ahp->ah_bssidmask, mask, IEEE80211_ADDR_LEN);

	OS_REG_WRITE(ah, AR_BSSMSKL, LE_READ_4(ahp->ah_bssidmask));
	OS_REG_WRITE(ah, AR_BSSMSKU, LE_READ_2(ahp->ah_bssidmask + 4));
	return AH_TRUE;
}

/*
 * Return the wireless modes (a,b,g,t) supported by hardware.
 *
 * This value is what is actually supported by the hardware
 * and is unaffected by regulatory/country code settings.
 *
 */
u_int
ar5212GetWirelessModes(struct ath_hal *ah)
{
	u_int mode = 0;

	if (ath_hal_eepromGetFlag(ah, AR_EEP_AMODE)) {
		mode = HAL_MODE_11A;
		if (!ath_hal_eepromGetFlag(ah, AR_EEP_TURBO5DISABLE))
			mode |= HAL_MODE_TURBO | HAL_MODE_108A;
	}
	if (ath_hal_eepromGetFlag(ah, AR_EEP_BMODE))
		mode |= HAL_MODE_11B;
	if (ath_hal_eepromGetFlag(ah, AR_EEP_GMODE) &&
	    AH_PRIVATE(ah)->ah_subvendorid != AR_SUBVENDOR_ID_NOG) {
		mode |= HAL_MODE_11G;
		if (!ath_hal_eepromGetFlag(ah, AR_EEP_TURBO2DISABLE))
			mode |= HAL_MODE_108G;
	}
	return mode;
}

/*
 * Set the interrupt and GPIO values so the ISR can disable RF
 * on a switch signal.  Assumes GPIO port and interrupt polarity
 * are set prior to call.
 */
void
ar5212EnableRfKill(struct ath_hal *ah)
{
	uint16_t rfsilent = AH_PRIVATE(ah)->ah_rfsilent;
	int select = MS(rfsilent, AR_EEPROM_RFSILENT_GPIO_SEL);
	int polarity = MS(rfsilent, AR_EEPROM_RFSILENT_POLARITY);

	/*
	 * Configure the desired GPIO port for input
	 * and enable baseband rf silence.
	 */
	ath_hal_gpioCfgInput(ah, select);
	OS_REG_SET_BIT(ah, AR_PHY(0), 0x00002000);
	/*
	 * If radio disable switch connection to GPIO bit x is enabled
	 * program GPIO interrupt.
	 * If rfkill bit on eeprom is 1, setupeeprommap routine has already
	 * verified that it is a later version of eeprom, it has a place for
	 * rfkill bit and it is set to 1, indicating that GPIO bit x hardware
	 * connection is present.
	 */
	ath_hal_gpioSetIntr(ah, select,
	    (ath_hal_gpioGet(ah, select) == polarity ? !polarity : polarity));
}

/*
 * Change the LED blinking pattern to correspond to the connectivity
 */
void
ar5212SetLedState(struct ath_hal *ah, HAL_LED_STATE state)
{
	static const uint32_t ledbits[8] = {
		AR_PCICFG_LEDCTL_NONE,	/* HAL_LED_INIT */
		AR_PCICFG_LEDCTL_PEND,	/* HAL_LED_SCAN */
		AR_PCICFG_LEDCTL_PEND,	/* HAL_LED_AUTH */
		AR_PCICFG_LEDCTL_ASSOC,	/* HAL_LED_ASSOC*/
		AR_PCICFG_LEDCTL_ASSOC,	/* HAL_LED_RUN */
		AR_PCICFG_LEDCTL_NONE,
		AR_PCICFG_LEDCTL_NONE,
		AR_PCICFG_LEDCTL_NONE,
	};
	uint32_t bits;

	bits = OS_REG_READ(ah, AR_PCICFG);
	if (IS_2417(ah)) {
		/*
		 * Enable LED for Nala. There is a bit marked reserved
		 * that must be set and we also turn on the power led.
		 * Because we mark s/w LED control setting the control
		 * status bits below is meangless (the driver must flash
		 * the LED(s) using the GPIO lines).
		 */
		bits = (bits &~ AR_PCICFG_LEDMODE)
		     | SM(AR_PCICFG_LEDMODE_POWON, AR_PCICFG_LEDMODE)
#if 0
		     | SM(AR_PCICFG_LEDMODE_NETON, AR_PCICFG_LEDMODE)
#endif
		     | 0x08000000;
	}
	bits = (bits &~ AR_PCICFG_LEDCTL)
	     | SM(ledbits[state & 0x7], AR_PCICFG_LEDCTL);
	OS_REG_WRITE(ah, AR_PCICFG, bits);
}

/*
 * Change association related fields programmed into the hardware.
 * Writing a valid BSSID to the hardware effectively enables the hardware
 * to synchronize its TSF to the correct beacons and receive frames coming
 * from that BSSID. It is called by the SME JOIN operation.
 */
void
ar5212WriteAssocid(struct ath_hal *ah, const uint8_t *bssid, uint16_t assocId)
{
	struct ath_hal_5212 *ahp = AH5212(ah);

	/* XXX save bssid for possible re-use on reset */
	OS_MEMCPY(ahp->ah_bssid, bssid, IEEE80211_ADDR_LEN);
	OS_REG_WRITE(ah, AR_BSS_ID0, LE_READ_4(ahp->ah_bssid));
	OS_REG_WRITE(ah, AR_BSS_ID1, LE_READ_2(ahp->ah_bssid+4) |
				     ((assocId & 0x3fff)<<AR_BSS_ID1_AID_S));
}

/*
 * Get the current hardware tsf for stamlme
 */
uint64_t
ar5212GetTsf64(struct ath_hal *ah)
{
	uint32_t low1, low2, u32;

	/* sync multi-word read */
	low1 = OS_REG_READ(ah, AR_TSF_L32);
	u32 = OS_REG_READ(ah, AR_TSF_U32);
	low2 = OS_REG_READ(ah, AR_TSF_L32);
	if (low2 < low1) {	/* roll over */
		/*
		 * If we are not preempted this will work.  If we are
		 * then we re-reading AR_TSF_U32 does no good as the
		 * low bits will be meaningless.  Likewise reading
		 * L32, U32, U32, then comparing the last two reads
		 * to check for rollover
		 * doesn't help if preempted--so we take this approach
		 * as it costs one less PCI read which can be noticeable
		 * when doing things like timestamping packets in
		 * monitor mode.
		 */
		u32++;
	}
	return (((uint64_t) u32) << 32) | ((uint64_t) low2);
}

/*
 * Get the current hardware tsf for stamlme
 */
uint32_t
ar5212GetTsf32(struct ath_hal *ah)
{
	return OS_REG_READ(ah, AR_TSF_L32);
}

/*
 * Reset the current hardware tsf for stamlme.
 */
void
ar5212ResetTsf(struct ath_hal *ah)
{

	uint32_t val = OS_REG_READ(ah, AR_BEACON);

	OS_REG_WRITE(ah, AR_BEACON, val | AR_BEACON_RESET_TSF);
	/*
	 * When resetting the TSF, write twice to the
	 * corresponding register; each write to the RESET_TSF bit toggles
	 * the internal signal to cause a reset of the TSF - but if the signal
	 * is left high, it will reset the TSF on the next chip reset also!
	 * writing the bit an even number of times fixes this issue
	 */
	OS_REG_WRITE(ah, AR_BEACON, val | AR_BEACON_RESET_TSF);
}

/*
 * Set or clear hardware basic rate bit
 * Set hardware basic rate set if basic rate is found
 * and basic rate is equal or less than 2Mbps
 */
void
ar5212SetBasicRate(struct ath_hal *ah, HAL_RATE_SET *rs)
{
	HAL_CHANNEL_INTERNAL *chan = AH_PRIVATE(ah)->ah_curchan;
	uint32_t reg;
	uint8_t xset;
	int i;

	if (chan == AH_NULL || !IS_CHAN_CCK(chan))
		return;
	xset = 0;
	for (i = 0; i < rs->rs_count; i++) {
		uint8_t rset = rs->rs_rates[i];
		/* Basic rate defined? */
		if ((rset & 0x80) && (rset &= 0x7f) >= xset)
			xset = rset;
	}
	/*
	 * Set the h/w bit to reflect whether or not the basic
	 * rate is found to be equal or less than 2Mbps.
	 */
	reg = OS_REG_READ(ah, AR_STA_ID1);
	if (xset && xset/2 <= 2)
		OS_REG_WRITE(ah, AR_STA_ID1, reg | AR_STA_ID1_BASE_RATE_11B);
	else
		OS_REG_WRITE(ah, AR_STA_ID1, reg &~ AR_STA_ID1_BASE_RATE_11B);
}

/*
 * Grab a semi-random value from hardware registers - may not
 * change often
 */
uint32_t
ar5212GetRandomSeed(struct ath_hal *ah)
{
	uint32_t nf;

	nf = (OS_REG_READ(ah, AR_PHY(25)) >> 19) & 0x1ff;
	if (nf & 0x100)
		nf = 0 - ((nf ^ 0x1ff) + 1);
	return (OS_REG_READ(ah, AR_TSF_U32) ^
		OS_REG_READ(ah, AR_TSF_L32) ^ nf);
}

/*
 * Detect if our card is present
 */
HAL_BOOL
ar5212DetectCardPresent(struct ath_hal *ah)
{
	uint16_t macVersion, macRev;
	uint32_t v;

	/*
	 * Read the Silicon Revision register and compare that
	 * to what we read at attach time.  If the same, we say
	 * a card/device is present.
	 */
	v = OS_REG_READ(ah, AR_SREV) & AR_SREV_ID;
	macVersion = v >> AR_SREV_ID_S;
	macRev = v & AR_SREV_REVISION;
	return (AH_PRIVATE(ah)->ah_macVersion == macVersion &&
		AH_PRIVATE(ah)->ah_macRev == macRev);
}

void
ar5212EnableMibCounters(struct ath_hal *ah)
{
	/* NB: this just resets the mib counter machinery */
	OS_REG_WRITE(ah, AR_MIBC,
	    ~(AR_MIBC_COW | AR_MIBC_FMC | AR_MIBC_CMC | AR_MIBC_MCS) & 0x0f);
}

void
ar5212DisableMibCounters(struct ath_hal *ah)
{
	OS_REG_WRITE(ah, AR_MIBC,  AR_MIBC | AR_MIBC_CMC);
}

/*
 * Update MIB Counters
 */
void
ar5212UpdateMibCounters(struct ath_hal *ah, HAL_MIB_STATS* stats)
{
	stats->ackrcv_bad += OS_REG_READ(ah, AR_ACK_FAIL);
	stats->rts_bad	  += OS_REG_READ(ah, AR_RTS_FAIL);
	stats->fcs_bad	  += OS_REG_READ(ah, AR_FCS_FAIL);
	stats->rts_good	  += OS_REG_READ(ah, AR_RTS_OK);
	stats->beacons	  += OS_REG_READ(ah, AR_BEACON_CNT);
}

/*
 * Detect if the HW supports spreading a CCK signal on channel 14
 */
HAL_BOOL
ar5212IsJapanChannelSpreadSupported(struct ath_hal *ah)
{
	return AH_TRUE;
}

/*
 * Get the rssi of frame curently being received.
 */
uint32_t
ar5212GetCurRssi(struct ath_hal *ah)
{
	return (OS_REG_READ(ah, AR_PHY_CURRENT_RSSI) & 0xff);
}

u_int
ar5212GetDefAntenna(struct ath_hal *ah)
{
	return (OS_REG_READ(ah, AR_DEF_ANTENNA) & 0x7);
}

void
ar5212SetDefAntenna(struct ath_hal *ah, u_int antenna)
{
	OS_REG_WRITE(ah, AR_DEF_ANTENNA, (antenna & 0x7));
}

HAL_ANT_SETTING
ar5212GetAntennaSwitch(struct ath_hal *ah)
{
	return AH5212(ah)->ah_diversityControl;
}

HAL_BOOL
ar5212SetAntennaSwitch(struct ath_hal *ah, HAL_ANT_SETTING settings)
{
	const HAL_CHANNEL_INTERNAL *chan = AH_PRIVATE(ah)->ah_curchan;

	if (chan == AH_NULL) {
		AH5212(ah)->ah_diversityControl = settings;
		return AH_TRUE;
	}
	return ar5212SetAntennaSwitchInternal(ah, settings, chan);
}

HAL_BOOL
ar5212IsSleepAfterBeaconBroken(struct ath_hal *ah)
{
	return AH_TRUE;
}

HAL_BOOL
ar5212SetSifsTime(struct ath_hal *ah, u_int us)
{
	struct ath_hal_5212 *ahp = AH5212(ah);

	if (us > ath_hal_mac_usec(ah, 0xffff)) {
		HALDEBUG(ah, HAL_DEBUG_ANY, "%s: bad SIFS time %u\n",
		    __func__, us);
		ahp->ah_sifstime = (u_int) -1;	/* restore default handling */
		return AH_FALSE;
	} else {
		/* convert to system clocks */
		OS_REG_WRITE(ah, AR_D_GBL_IFS_SIFS, ath_hal_mac_clks(ah, us));
		ahp->ah_slottime = us;
		return AH_TRUE;
	}
}

u_int
ar5212GetSifsTime(struct ath_hal *ah)
{
	u_int clks = OS_REG_READ(ah, AR_D_GBL_IFS_SIFS) & 0xffff;
	return ath_hal_mac_usec(ah, clks);	/* convert from system clocks */
}

HAL_BOOL
ar5212SetSlotTime(struct ath_hal *ah, u_int us)
{
	struct ath_hal_5212 *ahp = AH5212(ah);

	if (us < HAL_SLOT_TIME_6 || us > ath_hal_mac_usec(ah, 0xffff)) {
		HALDEBUG(ah, HAL_DEBUG_ANY, "%s: bad slot time %u\n",
		    __func__, us);
		ahp->ah_slottime = (u_int) -1;	/* restore default handling */
		return AH_FALSE;
	} else {
		/* convert to system clocks */
		OS_REG_WRITE(ah, AR_D_GBL_IFS_SLOT, ath_hal_mac_clks(ah, us));
		ahp->ah_slottime = us;
		return AH_TRUE;
	}
}

u_int
ar5212GetSlotTime(struct ath_hal *ah)
{
	u_int clks = OS_REG_READ(ah, AR_D_GBL_IFS_SLOT) & 0xffff;
	return ath_hal_mac_usec(ah, clks);	/* convert from system clocks */
}

HAL_BOOL
ar5212SetAckTimeout(struct ath_hal *ah, u_int us)
{
	struct ath_hal_5212 *ahp = AH5212(ah);

	if (us > ath_hal_mac_usec(ah, MS(0xffffffff, AR_TIME_OUT_ACK))) {
		HALDEBUG(ah, HAL_DEBUG_ANY, "%s: bad ack timeout %u\n",
		    __func__, us);
		ahp->ah_acktimeout = (u_int) -1; /* restore default handling */
		return AH_FALSE;
	} else {
		/* convert to system clocks */
		OS_REG_RMW_FIELD(ah, AR_TIME_OUT,
			AR_TIME_OUT_ACK, ath_hal_mac_clks(ah, us));
		ahp->ah_acktimeout = us;
		return AH_TRUE;
	}
}

u_int
ar5212GetAckTimeout(struct ath_hal *ah)
{
	u_int clks = MS(OS_REG_READ(ah, AR_TIME_OUT), AR_TIME_OUT_ACK);
	return ath_hal_mac_usec(ah, clks);	/* convert from system clocks */
}

u_int
ar5212GetAckCTSRate(struct ath_hal *ah)
{
	return ((AH5212(ah)->ah_staId1Defaults & AR_STA_ID1_ACKCTS_6MB) == 0);
}

HAL_BOOL
ar5212SetAckCTSRate(struct ath_hal *ah, u_int high)
{
	struct ath_hal_5212 *ahp = AH5212(ah);

	if (high) {
		OS_REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_ACKCTS_6MB);
		ahp->ah_staId1Defaults &= ~AR_STA_ID1_ACKCTS_6MB;
	} else {
		OS_REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_ACKCTS_6MB);
		ahp->ah_staId1Defaults |= AR_STA_ID1_ACKCTS_6MB;
	}
	return AH_TRUE;
}

HAL_BOOL
ar5212SetCTSTimeout(struct ath_hal *ah, u_int us)
{
	struct ath_hal_5212 *ahp = AH5212(ah);

	if (us > ath_hal_mac_usec(ah, MS(0xffffffff, AR_TIME_OUT_CTS))) {
		HALDEBUG(ah, HAL_DEBUG_ANY, "%s: bad cts timeout %u\n",
		    __func__, us);
		ahp->ah_ctstimeout = (u_int) -1; /* restore default handling */
		return AH_FALSE;
	} else {
		/* convert to system clocks */
		OS_REG_RMW_FIELD(ah, AR_TIME_OUT,
			AR_TIME_OUT_CTS, ath_hal_mac_clks(ah, us));
		ahp->ah_ctstimeout = us;
		return AH_TRUE;
	}
}

u_int
ar5212GetCTSTimeout(struct ath_hal *ah)
{
	u_int clks = MS(OS_REG_READ(ah, AR_TIME_OUT), AR_TIME_OUT_CTS);
	return ath_hal_mac_usec(ah, clks);	/* convert from system clocks */
}

/* Setup decompression for given key index */
HAL_BOOL
ar5212SetDecompMask(struct ath_hal *ah, uint16_t keyidx, int en)
{
	struct ath_hal_5212 *ahp = AH5212(ah);

        if (keyidx >= HAL_DECOMP_MASK_SIZE)
                return HAL_EINVAL;
        OS_REG_WRITE(ah, AR_DCM_A, keyidx);
        OS_REG_WRITE(ah, AR_DCM_D, en ? AR_DCM_D_EN : 0);
        ahp->ah_decompMask[keyidx] = en;

        return AH_TRUE;
}

/* Setup coverage class */
void
ar5212SetCoverageClass(struct ath_hal *ah, uint8_t coverageclass, int now)
{
	uint32_t slot, timeout, eifs;
	u_int clkRate;

	AH_PRIVATE(ah)->ah_coverageClass = coverageclass;

	if (now) {
		if (AH_PRIVATE(ah)->ah_coverageClass == 0)
			return;

		/* Don't apply coverage class to non A channels */
		if (!IS_CHAN_A(AH_PRIVATE(ah)->ah_curchan))
			return;

		/* Get core clock rate */
		clkRate = ath_hal_mac_clks(ah, 1);

		/* Compute EIFS */
		slot = coverageclass * 3 * clkRate;
		eifs = coverageclass * 6 * clkRate;
		if (IS_CHAN_HALF_RATE(AH_PRIVATE(ah)->ah_curchan)) {
			slot += IFS_SLOT_HALF_RATE;
			eifs += IFS_EIFS_HALF_RATE;
		} else if (IS_CHAN_QUARTER_RATE(AH_PRIVATE(ah)->ah_curchan)) {
			slot += IFS_SLOT_QUARTER_RATE;
			eifs += IFS_EIFS_QUARTER_RATE;
		} else { /* full rate */
			slot += IFS_SLOT_FULL_RATE;
			eifs += IFS_EIFS_FULL_RATE;
		}

		/*
		 * Add additional time for air propagation for ACK and CTS
		 * timeouts. This value is in core clocks.
  		 */
		timeout = ACK_CTS_TIMEOUT_11A + (coverageclass * 3 * clkRate);

		/*
		 * Write the values: slot, eifs, ack/cts timeouts.
		 */
		OS_REG_WRITE(ah, AR_D_GBL_IFS_SLOT, slot);
		OS_REG_WRITE(ah, AR_D_GBL_IFS_EIFS, eifs);
		OS_REG_WRITE(ah, AR_TIME_OUT,
			  SM(timeout, AR_TIME_OUT_CTS)
			| SM(timeout, AR_TIME_OUT_ACK));
	}
}

void
ar5212SetPCUConfig(struct ath_hal *ah)
{
	ar5212SetOperatingMode(ah, AH_PRIVATE(ah)->ah_opmode);
}

/*
 * Return whether an external 32KHz crystal should be used
 * to reduce power consumption when sleeping.  We do so if
 * the crystal is present (obtained from EEPROM) and if we
 * are not running as an AP and are configured to use it.
 */
HAL_BOOL
ar5212Use32KHzclock(struct ath_hal *ah, HAL_OPMODE opmode)
{
	if (opmode != HAL_M_HOSTAP) {
		struct ath_hal_5212 *ahp = AH5212(ah);
		return ath_hal_eepromGetFlag(ah, AR_EEP_32KHZCRYSTAL) &&
		       (ahp->ah_enable32kHzClock == USE_32KHZ ||
		        ahp->ah_enable32kHzClock == AUTO_32KHZ);
	} else
		return AH_FALSE;
}

/*
 * If 32KHz clock exists, use it to lower power consumption during sleep
 *
 * Note: If clock is set to 32 KHz, delays on accessing certain
 *       baseband registers (27-31, 124-127) are required.
 */
void
ar5212SetupClock(struct ath_hal *ah, HAL_OPMODE opmode)
{
	if (ar5212Use32KHzclock(ah, opmode)) {
		/*
		 * Enable clocks to be turned OFF in BB during sleep
		 * and also enable turning OFF 32MHz/40MHz Refclk
		 * from A2.
		 */
		OS_REG_WRITE(ah, AR_PHY_SLEEP_CTR_CONTROL, 0x1f);
		OS_REG_WRITE(ah, AR_PHY_REFCLKPD, IS_5112(ah) ?  0x14 : 0x18);
		OS_REG_RMW_FIELD(ah, AR_USEC, AR_USEC_USEC32, 1);
		OS_REG_WRITE(ah, AR_TSF_PARM, 61);  /* 32 KHz TSF incr */
		OS_REG_RMW_FIELD(ah, AR_PCICFG, AR_PCICFG_SCLK_SEL, 1);

		if (IS_2413(ah) || IS_5413(ah) || IS_2417(ah)) {
			OS_REG_WRITE(ah, AR_PHY_SLEEP_CTR_LIMIT,   0x26);
			OS_REG_WRITE(ah, AR_PHY_SLEEP_SCAL,        0x0d);
			OS_REG_WRITE(ah, AR_PHY_M_SLEEP,           0x07);
			OS_REG_WRITE(ah, AR_PHY_REFCLKDLY,         0x3f);
			/* # Set sleep clock rate to 32 KHz. */
			OS_REG_RMW_FIELD(ah, AR_PCICFG, AR_PCICFG_SCLK_RATE_IND, 0x2);
		} else {
			OS_REG_WRITE(ah, AR_PHY_SLEEP_CTR_LIMIT,   0x0a);
			OS_REG_WRITE(ah, AR_PHY_SLEEP_SCAL,        0x0c);
			OS_REG_WRITE(ah, AR_PHY_M_SLEEP,           0x03);
			OS_REG_WRITE(ah, AR_PHY_REFCLKDLY,         0x20);
			OS_REG_RMW_FIELD(ah, AR_PCICFG, AR_PCICFG_SCLK_RATE_IND, 0x3);
		}
	} else {
		OS_REG_RMW_FIELD(ah, AR_PCICFG, AR_PCICFG_SCLK_RATE_IND, 0x0);
		OS_REG_RMW_FIELD(ah, AR_PCICFG, AR_PCICFG_SCLK_SEL, 0);

		OS_REG_WRITE(ah, AR_TSF_PARM, 1);	/* 32MHz TSF inc */

		OS_REG_WRITE(ah, AR_PHY_SLEEP_CTR_CONTROL, 0x1f);
		OS_REG_WRITE(ah, AR_PHY_SLEEP_CTR_LIMIT,   0x7f);

		if (IS_2417(ah))
			OS_REG_WRITE(ah, AR_PHY_SLEEP_SCAL, 0x0a);
		else if (IS_HB63(ah))
			OS_REG_WRITE(ah, AR_PHY_SLEEP_SCAL, 0x32);
		else
			OS_REG_WRITE(ah, AR_PHY_SLEEP_SCAL, 0x0e);
		OS_REG_WRITE(ah, AR_PHY_M_SLEEP,           0x0c);
		OS_REG_WRITE(ah, AR_PHY_REFCLKDLY,         0xff);
		OS_REG_WRITE(ah, AR_PHY_REFCLKPD,
		    IS_5112(ah) || IS_2417(ah) ? 0x14 : 0x18);
		OS_REG_RMW_FIELD(ah, AR_USEC, AR_USEC_USEC32, IS_5112(ah) ? 39 : 31);
	}
}

/*
 * If 32KHz clock exists, turn it off and turn back on the 32Mhz
 */
void
ar5212RestoreClock(struct ath_hal *ah, HAL_OPMODE opmode)
{
	if (ar5212Use32KHzclock(ah, opmode)) {
		/* # Set sleep clock rate back to 32 MHz. */
		OS_REG_RMW_FIELD(ah, AR_PCICFG, AR_PCICFG_SCLK_RATE_IND, 0);
		OS_REG_RMW_FIELD(ah, AR_PCICFG, AR_PCICFG_SCLK_SEL, 0);

		OS_REG_WRITE(ah, AR_TSF_PARM, 1);	/* 32 MHz TSF incr */
		OS_REG_RMW_FIELD(ah, AR_USEC, AR_USEC_USEC32, IS_5112(ah) ? 39 : 31);

		/*
		 * Restore BB registers to power-on defaults
		 */
		OS_REG_WRITE(ah, AR_PHY_SLEEP_CTR_CONTROL, 0x1f);
		OS_REG_WRITE(ah, AR_PHY_SLEEP_CTR_LIMIT,   0x7f);
		OS_REG_WRITE(ah, AR_PHY_SLEEP_SCAL,        0x0e);
		OS_REG_WRITE(ah, AR_PHY_M_SLEEP,           0x0c);
		OS_REG_WRITE(ah, AR_PHY_REFCLKDLY,         0xff);
		OS_REG_WRITE(ah, AR_PHY_REFCLKPD, IS_5112(ah) ?  0x14 : 0x18);
	}
}

/*
 * Adjust NF based on statistical values for 5GHz frequencies.
 * Default method: this may be overridden by the rf backend.
 */
int16_t
ar5212GetNfAdjust(struct ath_hal *ah, const HAL_CHANNEL_INTERNAL *c)
{
	static const struct {
		uint16_t freqLow;
		int16_t	  adjust;
	} adjustDef[] = {
		{ 5790,	11 },	/* NB: ordered high -> low */
		{ 5730, 10 },
		{ 5690,  9 },
		{ 5660,  8 },
		{ 5610,  7 },
		{ 5530,  5 },
		{ 5450,  4 },
		{ 5379,  2 },
		{ 5209,  0 },
		{ 3000,  1 },
		{    0,  0 },
	};
	int i;

	for (i = 0; c->channel <= adjustDef[i].freqLow; i++)
		;
	return adjustDef[i].adjust;
}

HAL_STATUS
ar5212GetCapability(struct ath_hal *ah, HAL_CAPABILITY_TYPE type,
	uint32_t capability, uint32_t *result)
{
#define	MACVERSION(ah)	AH_PRIVATE(ah)->ah_macVersion
	struct ath_hal_5212 *ahp = AH5212(ah);
	const HAL_CAPABILITIES *pCap = &AH_PRIVATE(ah)->ah_caps;
	const struct ar5212AniState *ani;

	switch (type) {
	case HAL_CAP_CIPHER:		/* cipher handled in hardware */
		switch (capability) {
		case HAL_CIPHER_AES_CCM:
			return pCap->halCipherAesCcmSupport ?
				HAL_OK : HAL_ENOTSUPP;
		case HAL_CIPHER_AES_OCB:
		case HAL_CIPHER_TKIP:
		case HAL_CIPHER_WEP:
		case HAL_CIPHER_MIC:
		case HAL_CIPHER_CLR:
			return HAL_OK;
		default:
			return HAL_ENOTSUPP;
		}
	case HAL_CAP_TKIP_MIC:		/* handle TKIP MIC in hardware */
		switch (capability) {
		case 0:			/* hardware capability */
			return HAL_OK;
		case 1:
			return (ahp->ah_staId1Defaults &
			    AR_STA_ID1_CRPT_MIC_ENABLE) ?  HAL_OK : HAL_ENXIO;
		}
	case HAL_CAP_TKIP_SPLIT:	/* hardware TKIP uses split keys */
		switch (capability) {
		case 0:			/* hardware capability */
			return pCap->halTkipMicTxRxKeySupport ?
				HAL_ENXIO : HAL_OK;
		case 1:			/* current setting */
			return (ahp->ah_miscMode &
			    AR_MISC_MODE_MIC_NEW_LOC_ENABLE) ? HAL_ENXIO : HAL_OK;
		}
		return HAL_EINVAL;
	case HAL_CAP_WME_TKIPMIC:	/* hardware can do TKIP MIC w/ WMM */
		/* XXX move to capability bit */
		return MACVERSION(ah) > AR_SREV_VERSION_VENICE ||
		    (MACVERSION(ah) == AR_SREV_VERSION_VENICE &&
		     AH_PRIVATE(ah)->ah_macRev >= 8) ? HAL_OK : HAL_ENOTSUPP;
	case HAL_CAP_DIVERSITY:		/* hardware supports fast diversity */
		switch (capability) {
		case 0:			/* hardware capability */
			return HAL_OK;
		case 1:			/* current setting */
			return (OS_REG_READ(ah, AR_PHY_CCK_DETECT) &
				AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV) ?
				HAL_OK : HAL_ENXIO;
		}
		return HAL_EINVAL;
	case HAL_CAP_DIAG:
		*result = AH_PRIVATE(ah)->ah_diagreg;
		return HAL_OK;
	case HAL_CAP_TPC:
		switch (capability) {
		case 0:			/* hardware capability */
			return HAL_OK;
		case 1:
			return ahp->ah_tpcEnabled ? HAL_OK : HAL_ENXIO;
		}
		return HAL_OK;
	case HAL_CAP_PHYDIAG:		/* radar pulse detection capability */
		switch (capability) {
		case HAL_CAP_RADAR:
			return ath_hal_eepromGetFlag(ah, AR_EEP_AMODE) ?
			    HAL_OK: HAL_ENXIO;
		case HAL_CAP_AR:
			return (ath_hal_eepromGetFlag(ah, AR_EEP_GMODE) ||
			    ath_hal_eepromGetFlag(ah, AR_EEP_BMODE)) ?
			       HAL_OK: HAL_ENXIO;
		}
		return HAL_ENXIO;
	case HAL_CAP_MCAST_KEYSRCH:	/* multicast frame keycache search */
		switch (capability) {
		case 0:			/* hardware capability */
			return HAL_OK;
		case 1:
			return (ahp->ah_staId1Defaults &
			    AR_STA_ID1_MCAST_KSRCH) ? HAL_OK : HAL_ENXIO;
		}
		return HAL_EINVAL;
	case HAL_CAP_TSF_ADJUST:	/* hardware has beacon tsf adjust */
		switch (capability) {
		case 0:			/* hardware capability */
			return pCap->halTsfAddSupport ? HAL_OK : HAL_ENOTSUPP;
		case 1:
			return (ahp->ah_miscMode & AR_MISC_MODE_TX_ADD_TSF) ?
				HAL_OK : HAL_ENXIO;
		}
		return HAL_EINVAL;
	case HAL_CAP_TPC_ACK:
		*result = MS(ahp->ah_macTPC, AR_TPC_ACK);
		return HAL_OK;
	case HAL_CAP_TPC_CTS:
		*result = MS(ahp->ah_macTPC, AR_TPC_CTS);
		return HAL_OK;
	case HAL_CAP_INTMIT:		/* interference mitigation */
		switch (capability) {
		case 0:			/* hardware capability */
			return HAL_OK;
		case 1:
			return (ahp->ah_procPhyErr & HAL_ANI_ENA) ?
				HAL_OK : HAL_ENXIO;
		case 2:			/* HAL_ANI_NOISE_IMMUNITY_LEVEL */
		case 3:			/* HAL_ANI_OFDM_WEAK_SIGNAL_DETECTION */
		case 4:			/* HAL_ANI_CCK_WEAK_SIGNAL_THR */
		case 5:			/* HAL_ANI_FIRSTEP_LEVEL */
		case 6:			/* HAL_ANI_SPUR_IMMUNITY_LEVEL */
			ani = ar5212AniGetCurrentState(ah);
			if (ani == AH_NULL)
				return HAL_ENXIO;
			switch (capability) {
			case 2:	*result = ani->noiseImmunityLevel; break;
			case 3: *result = !ani->ofdmWeakSigDetectOff; break;
			case 4: *result = ani->cckWeakSigThreshold; break;
			case 5: *result = ani->firstepLevel; break;
			case 6: *result = ani->spurImmunityLevel; break;
			}
			return HAL_OK;
		}
		return HAL_EINVAL;
	default:
		return ath_hal_getcapability(ah, type, capability, result);
	}
#undef MACVERSION
}

HAL_BOOL
ar5212SetCapability(struct ath_hal *ah, HAL_CAPABILITY_TYPE type,
	uint32_t capability, uint32_t setting, HAL_STATUS *status)
{
#define	N(a)	(sizeof(a)/sizeof(a[0]))
	struct ath_hal_5212 *ahp = AH5212(ah);
	const HAL_CAPABILITIES *pCap = &AH_PRIVATE(ah)->ah_caps;
	uint32_t v;

	switch (type) {
	case HAL_CAP_TKIP_MIC:		/* handle TKIP MIC in hardware */
		if (setting)
			ahp->ah_staId1Defaults |= AR_STA_ID1_CRPT_MIC_ENABLE;
		else
			ahp->ah_staId1Defaults &= ~AR_STA_ID1_CRPT_MIC_ENABLE;
		return AH_TRUE;
	case HAL_CAP_TKIP_SPLIT:	/* hardware TKIP uses split keys */
		if (!pCap->halTkipMicTxRxKeySupport)
			return AH_FALSE;
		/* NB: true =>'s use split key cache layout */
		if (setting)
			ahp->ah_miscMode &= ~AR_MISC_MODE_MIC_NEW_LOC_ENABLE;
		else
			ahp->ah_miscMode |= AR_MISC_MODE_MIC_NEW_LOC_ENABLE;
		/* NB: write here so keys can be setup w/o a reset */
		OS_REG_WRITE(ah, AR_MISC_MODE, ahp->ah_miscMode);
		return AH_TRUE;
	case HAL_CAP_DIVERSITY:
		v = OS_REG_READ(ah, AR_PHY_CCK_DETECT);
		if (setting)
			v |= AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV;
		else
			v &= ~AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV;
		OS_REG_WRITE(ah, AR_PHY_CCK_DETECT, v);
		return AH_TRUE;
	case HAL_CAP_DIAG:		/* hardware diagnostic support */
		/*
		 * NB: could split this up into virtual capabilities,
		 *     (e.g. 1 => ACK, 2 => CTS, etc.) but it hardly
		 *     seems worth the additional complexity.
		 */
		AH_PRIVATE(ah)->ah_diagreg = setting;
		OS_REG_WRITE(ah, AR_DIAG_SW, AH_PRIVATE(ah)->ah_diagreg);
		return AH_TRUE;
	case HAL_CAP_TPC:
		ahp->ah_tpcEnabled = (setting != 0);
		return AH_TRUE;
	case HAL_CAP_MCAST_KEYSRCH:	/* multicast frame keycache search */
		if (setting)
			ahp->ah_staId1Defaults |= AR_STA_ID1_MCAST_KSRCH;
		else
			ahp->ah_staId1Defaults &= ~AR_STA_ID1_MCAST_KSRCH;
		return AH_TRUE;
	case HAL_CAP_TPC_ACK:
	case HAL_CAP_TPC_CTS:
		setting += ahp->ah_txPowerIndexOffset;
		if (setting > 63)
			setting = 63;
		if (type == HAL_CAP_TPC_ACK) {
			ahp->ah_macTPC &= AR_TPC_ACK;
			ahp->ah_macTPC |= MS(setting, AR_TPC_ACK);
		} else {
			ahp->ah_macTPC &= AR_TPC_CTS;
			ahp->ah_macTPC |= MS(setting, AR_TPC_CTS);
		}
		OS_REG_WRITE(ah, AR_TPC, ahp->ah_macTPC);
		return AH_TRUE;
	case HAL_CAP_INTMIT: {		/* interference mitigation */
		static const HAL_ANI_CMD cmds[] = {
			HAL_ANI_PRESENT,
			HAL_ANI_MODE,
			HAL_ANI_NOISE_IMMUNITY_LEVEL,
			HAL_ANI_OFDM_WEAK_SIGNAL_DETECTION,
			HAL_ANI_CCK_WEAK_SIGNAL_THR,
			HAL_ANI_FIRSTEP_LEVEL,
			HAL_ANI_SPUR_IMMUNITY_LEVEL,
		};
		return capability < N(cmds) ?
			ar5212AniControl(ah, cmds[capability], setting) :
			AH_FALSE;
	}
	case HAL_CAP_TSF_ADJUST:	/* hardware has beacon tsf adjust */
		if (pCap->halTsfAddSupport) {
			if (setting)
				ahp->ah_miscMode |= AR_MISC_MODE_TX_ADD_TSF;
			else
				ahp->ah_miscMode &= ~AR_MISC_MODE_TX_ADD_TSF;
			return AH_TRUE;
		}
		/* fall thru... */
	default:
		return ath_hal_setcapability(ah, type, capability,
				setting, status);
	}
#undef N
}

HAL_BOOL
ar5212GetDiagState(struct ath_hal *ah, int request,
	const void *args, uint32_t argsize,
	void **result, uint32_t *resultsize)
{
	struct ath_hal_5212 *ahp = AH5212(ah);

	(void) ahp;
	if (ath_hal_getdiagstate(ah, request, args, argsize, result, resultsize))
		return AH_TRUE;
	switch (request) {
	case HAL_DIAG_EEPROM:
	case HAL_DIAG_EEPROM_EXP_11A:
	case HAL_DIAG_EEPROM_EXP_11B:
	case HAL_DIAG_EEPROM_EXP_11G:
	case HAL_DIAG_RFGAIN:
		return ath_hal_eepromDiag(ah, request,
		    args, argsize, result, resultsize);
	case HAL_DIAG_RFGAIN_CURSTEP:
		*result = __DECONST(void *, ahp->ah_gainValues.currStep);
		*resultsize = (*result == AH_NULL) ?
			0 : sizeof(GAIN_OPTIMIZATION_STEP);
		return AH_TRUE;
	case HAL_DIAG_PCDAC:
		*result = ahp->ah_pcdacTable;
		*resultsize = ahp->ah_pcdacTableSize;
		return AH_TRUE;
	case HAL_DIAG_TXRATES:
		*result = &ahp->ah_ratesArray[0];
		*resultsize = sizeof(ahp->ah_ratesArray);
		return AH_TRUE;
	case HAL_DIAG_ANI_CURRENT:
		*result = ar5212AniGetCurrentState(ah);
		*resultsize = (*result == AH_NULL) ?
			0 : sizeof(struct ar5212AniState);
		return AH_TRUE;
	case HAL_DIAG_ANI_STATS:
		*result = ar5212AniGetCurrentStats(ah);
		*resultsize = (*result == AH_NULL) ?
			0 : sizeof(struct ar5212Stats);
		return AH_TRUE;
	case HAL_DIAG_ANI_CMD:
		if (argsize != 2*sizeof(uint32_t))
			return AH_FALSE;
		ar5212AniControl(ah, ((const uint32_t *)args)[0],
			((const uint32_t *)args)[1]);
		return AH_TRUE;
	case HAL_DIAG_ANI_PARAMS:
		/*
		 * NB: We assume struct ar5212AniParams is identical
		 * to HAL_ANI_PARAMS; if they diverge then we'll need
		 * to handle it here
		 */
		if (argsize == 0 && args == AH_NULL) {
			struct ar5212AniState *aniState =
			    ar5212AniGetCurrentState(ah);
			if (aniState == AH_NULL)
				return AH_FALSE;
			*result = __DECONST(void *, aniState->params);
			*resultsize = sizeof(struct ar5212AniParams);
			return AH_TRUE;
		} else {
			if (argsize != sizeof(struct ar5212AniParams))
				return AH_FALSE;
			return ar5212AniSetParams(ah, args, args);
		}
	}
	return AH_FALSE;
}
#endif /* AH_SUPPORT_AR5212 */