ar5211_attach.c

Atheros wifi driver source code

/*
 * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
 * Copyright (c) 2002-2005 Atheros Communications, Inc.
 * All rights reserved.
 *
 * $Id: ar5211_attach.c,v 1.1.1.1 2006/09/12 03:45:23 steven Exp $
 */
#include "opt_ah.h"

#ifdef AH_SUPPORT_AR5211

#include "ah.h"
#include "ah_internal.h"
#include "ah_devid.h"

#include "ar5211/ar5211.h"
#include "ar5211/ar5211reg.h"
#include "ar5211/ar5211phy.h"

static HAL_BOOL ar5211GetChannelEdges(struct ath_hal *ah,
		u_int16_t flags, u_int16_t *low, u_int16_t *high);
static HAL_BOOL ar5211GetChipPowerLimits(struct ath_hal *ah,
		HAL_CHANNEL *chans, u_int32_t nchans);

static const struct ath_hal_private ar5211hal = {{
	.ah_magic			= AR5211_MAGIC,
	.ah_abi				= HAL_ABI_VERSION,
	.ah_countryCode			= CTRY_DEFAULT,

	.ah_getRateTable		= ar5211GetRateTable,
	.ah_detach			= ar5211Detach,

	/* Reset Functions */
	.ah_reset			= ar5211Reset,
	.ah_phyDisable			= ar5211PhyDisable,
	.ah_setPCUConfig		= ar5211SetPCUConfig,
	.ah_perCalibration		= ar5211PerCalibration,
	.ah_setTxPowerLimit		= ar5211SetTxPowerLimit,

	/* AR/Radar Functions */
	.ah_arEnable			= ar5211ArEnable,
	.ah_arDisable			= ar5211ArDisable,
	.ah_arReset			= ar5211ResetAR,
	.ah_radarHaveEvent		= ar5211HaveRadarEvent,
	.ah_processDfs			= ar5211ProcessRadarEvent,
	.ah_dfsNolCheck			= ar5211CheckRadarNol,
	.ah_radarWait			= ar5211RadarWait,
	
	/* Xr Functions */
	.ah_xrEnable			= ar5211XrEnable,
	.ah_xrDisable			= ar5211XrDisable,

	/* Transmit functions */
	.ah_updateTxTrigLevel		= ar5211UpdateTxTrigLevel,
	.ah_setupTxQueue		= ar5211SetupTxQueue,
	.ah_setTxQueueProps             = ar5211SetTxQueueProps,
	.ah_getTxQueueProps             = ar5211GetTxQueueProps,
	.ah_releaseTxQueue		= ar5211ReleaseTxQueue,
	.ah_resetTxQueue		= ar5211ResetTxQueue,
	.ah_getTxDP			= ar5211GetTxDP,
	.ah_setTxDP			= ar5211SetTxDP,
	.ah_numTxPending		= ar5211NumTxPending,
	.ah_startTxDma			= ar5211StartTxDma,
	.ah_stopTxDma			= ar5211StopTxDma,
	.ah_updateCTSForBursting	= ar5211UpdateCTSForBursting,	
	.ah_setupTxDesc			= ar5211SetupTxDesc,
	.ah_setupXTxDesc		= ar5211SetupXTxDesc,
	.ah_fillTxDesc			= ar5211FillTxDesc,
	.ah_procTxDesc			= ar5211ProcTxDesc,
	.ah_getTxIntrQueue		= ar5211GetTxIntrQueue,
	.ah_reqTxIntrDesc 		= ar5211IntrReqTxDesc,

	/* RX Functions */
	.ah_getRxDP			= ar5211GetRxDP,
	.ah_setRxDP			= ar5211SetRxDP,
	.ah_enableReceive		= ar5211EnableReceive,
	.ah_stopDmaReceive		= ar5211StopDmaReceive,
	.ah_startPcuReceive		= ar5211StartPcuReceive,
	.ah_stopPcuReceive		= ar5211StopPcuReceive,
	.ah_setMulticastFilter		= ar5211SetMulticastFilter,
	.ah_setMulticastFilterIndex	= ar5211SetMulticastFilterIndex,
	.ah_clrMulticastFilterIndex	= ar5211ClrMulticastFilterIndex,
	.ah_getRxFilter			= ar5211GetRxFilter,
	.ah_setRxFilter			= ar5211SetRxFilter,
	.ah_setupRxDesc			= ar5211SetupRxDesc,
	.ah_procRxDesc			= ar5211ProcRxDesc,
	.ah_rxMonitor			= ar5211AniPoll,
	.ah_procMibEvent		= ar5211MibEvent,

	/* Misc Functions */
	.ah_getCapability		= ar5211GetCapability,
	.ah_setCapability		= ar5211SetCapability,
	.ah_getDiagState		= ar5211GetDiagState,
	.ah_getMacAddress		= ar5211GetMacAddress,
	.ah_setMacAddress		= ar5211SetMacAddress,
	.ah_getBssIdMask		= ar5211GetBssIdMask,
	.ah_setBssIdMask		= ar5211SetBssIdMask,
	.ah_setRegulatoryDomain		= ar5211SetRegulatoryDomain,
	.ah_setLedState			= ar5211SetLedState,
	.ah_writeAssocid		= ar5211WriteAssocid,
	.ah_gpioCfgInput		= ar5211GpioCfgInput,
	.ah_gpioCfgOutput		= ar5211GpioCfgOutput,
	.ah_gpioGet			= ar5211GpioGet,
	.ah_gpioSet			= ar5211GpioSet,
	.ah_gpioSetIntr			= ar5211GpioSetIntr,
	.ah_getTsf32			= ar5211GetTsf32,
	.ah_getTsf64			= ar5211GetTsf64,
	.ah_resetTsf			= ar5211ResetTsf,
	.ah_detectCardPresent		= ar5211DetectCardPresent,
	.ah_updateMibCounters		= ar5211UpdateMibCounters,
	.ah_getRfGain			= ar5211GetRfgain,
	.ah_getDefAntenna		= ar5211GetDefAntenna,
	.ah_setDefAntenna		= ar5211SetDefAntenna,
	.ah_setSlotTime			= ar5211SetSlotTime,
	.ah_getSlotTime			= ar5211GetSlotTime,
	.ah_setAckTimeout		= ar5211SetAckTimeout,
	.ah_getAckTimeout		= ar5211GetAckTimeout,
	.ah_setCTSTimeout		= ar5211SetCTSTimeout,
	.ah_getCTSTimeout		= ar5211GetCTSTimeout,
	.ah_setDecompMask               = ar5211SetDecompMask,
	.ah_setCoverageClass            = ar5211SetCoverageClass,

	/* Key Cache Functions */
	.ah_getKeyCacheSize		= ar5211GetKeyCacheSize,
	.ah_resetKeyCacheEntry		= ar5211ResetKeyCacheEntry,
	.ah_isKeyCacheEntryValid	= ar5211IsKeyCacheEntryValid,
	.ah_setKeyCacheEntry		= ar5211SetKeyCacheEntry,
	.ah_setKeyCacheEntryMac		= ar5211SetKeyCacheEntryMac,

	/* Power Management Functions */
	.ah_setPowerMode		= ar5211SetPowerMode,
	.ah_getPowerMode		= ar5211GetPowerMode,

	/* Beacon Functions */
	.ah_beaconInit			= ar5211BeaconInit,
	.ah_setStationBeaconTimers	= ar5211SetStaBeaconTimers,
	.ah_resetStationBeaconTimers	= ar5211ResetStaBeaconTimers,
	.ah_waitForBeaconDone		= ar5211WaitForBeaconDone,

	/* Interrupt Functions */
	.ah_isInterruptPending		= ar5211IsInterruptPending,
	.ah_getPendingInterrupts	= ar5211GetPendingInterrupts,
	.ah_getInterrupts		= ar5211GetInterrupts,
	.ah_setInterrupts		= ar5211SetInterrupts },

	.ah_getChannelEdges		= ar5211GetChannelEdges,
	.ah_getWirelessModes		= ar5211GetWirelessModes,
	.ah_eepromRead			= ar5211EepromRead,
#ifdef AH_SUPPORT_WRITE_EEPROM
	.ah_eepromWrite			= ar5211EepromWrite,
#endif
	.ah_gpioCfgInput		= ar5211GpioCfgInput,
	.ah_gpioCfgOutput		= ar5211GpioCfgOutput,
	.ah_gpioGet			= ar5211GpioGet,
	.ah_gpioSet			= ar5211GpioSet,
	.ah_gpioSetIntr			= ar5211GpioSetIntr,
	.ah_getChipPowerLimits		= ar5211GetChipPowerLimits,
};

static HAL_BOOL ar5211ChipTest(struct ath_hal *);
static HAL_BOOL ar5211FillCapabilityInfo(struct ath_hal *ah);

/*
 * TODO: Need to talk to Praveen about this, these are
 * not valid 2.4 channels, either we change these
 * or I need to change the beanie coding to accept these
 */
static const u_int16_t channels2_4[] = { 2412, 2447, 2484 };

/*
 * Return the revsion id for the radio chip.  This
 * fetched via the PHY.
 */
static u_int32_t
ar5211GetRadioRev(struct ath_hal *ah)
{
	u_int32_t val;
	int i;

	OS_REG_WRITE(ah, (AR_PHY_BASE + (0x34 << 2)), 0x00001c16);
	for (i = 0; i < 8; i++)
		OS_REG_WRITE(ah, (AR_PHY_BASE + (0x20 << 2)), 0x00010000);
	val = (OS_REG_READ(ah, AR_PHY_BASE + (256 << 2)) >> 24) & 0xff;
	val = ((val & 0xf0) >> 4) | ((val & 0x0f) << 4);
	return ath_hal_reverseBits(val, 8);
}

/*
 * Attach for an AR5211 part.
 */
struct ath_hal *
ar5211Attach(u_int16_t devid, HAL_SOFTC sc,
	HAL_BUS_TAG st, HAL_BUS_HANDLE sh, HAL_STATUS *status)
{
#define	N(a)	(sizeof(a)/sizeof(a[0]))
	struct ath_hal_5211 *ahp;
	struct ath_hal *ah;
	u_int i;
	u_int32_t sum, val;
	u_int16_t eeval;
	HAL_STATUS ecode;

	HALDEBUG(AH_NULL, "%s: sc %p st %u sh %p\n",
		__func__, sc, st, (void*) sh);

	/* NB: memory is returned zero'd */
	ahp = ath_hal_malloc(sizeof (struct ath_hal_5211));
	if (ahp == AH_NULL) {
		HALDEBUG(AH_NULL, "%s: cannot allocate memory for state "
			"block\n", __func__);
		ecode = HAL_ENOMEM;
		goto bad;
	}
	ah = &ahp->ah_priv.h;
	/* set initial values */
	OS_MEMCPY(&ahp->ah_priv, &ar5211hal, sizeof(struct ath_hal_private));
	ah->ah_sc = sc;
	ah->ah_st = st;
	ah->ah_sh = sh;

	AH_PRIVATE(ah)->ah_devid = devid;
	AH_PRIVATE(ah)->ah_subvendorid = 0;	/* XXX */

	AH_PRIVATE(ah)->ah_powerLimit = MAX_RATE_POWER;
	AH_PRIVATE(ah)->ah_tpScale = HAL_TP_SCALE_MAX;	/* no scaling */

	ahp->ah_diversityControl = HAL_ANT_VARIABLE;
	ahp->ah_atimWindow = 0;
	ahp->ah_slottime = (u_int) -1;
	ahp->ah_acktimeout = (u_int) -1;
	ahp->ah_ctstimeout = (u_int) -1;

	if (!ar5211ChipReset(ah, AH_FALSE)) {	/* reset chip */
		HALDEBUG(ah, "%s: chip reset failed\n", __func__);
		ecode = HAL_EIO;
		goto bad;
	}
	if (AH_PRIVATE(ah)->ah_devid == AR5211_FPGA11B) {
		/* set it back to OFDM mode to be able to read analog rev id */
		OS_REG_WRITE(ah, AR5211_PHY_MODE, AR5211_PHY_MODE_OFDM);
		OS_REG_WRITE(ah, AR_PHY_PLL_CTL, AR_PHY_PLL_CTL_44);
		OS_DELAY(1000);
	}

	/* Read Revisions from Chips */
	val = OS_REG_READ(ah, AR_SREV) & AR_SREV_ID_M;
	AH_PRIVATE(ah)->ah_macVersion = val >> AR_SREV_ID_S;
	AH_PRIVATE(ah)->ah_macRev = val & AR_SREV_REVISION_M;

	if (AH_PRIVATE(ah)->ah_macVersion < AR_SREV_VERSION_MAUI_2 ||
	    AH_PRIVATE(ah)->ah_macVersion > AR_SREV_VERSION_OAHU) {
		HALDEBUG(ah, "%s: Mac Chip Rev 0x%x is not supported by this "
			"driver\n", __func__, AH_PRIVATE(ah)->ah_macVersion);
		ecode = HAL_ENOTSUPP;
		goto bad;
	}

	AH_PRIVATE(ah)->ah_phyRev = OS_REG_READ(ah, AR_PHY_CHIP_ID);

	if (!ar5211ChipTest(ah)) {
		HALDEBUG(ah, "%s: hardware self-test failed\n", __func__);
		ecode = HAL_ESELFTEST;
		goto bad;
	}

	/* Set correct Baseband to analog shift setting to access analog chips. */
	if (AH_PRIVATE(ah)->ah_macVersion >= AR_SREV_VERSION_OAHU) {
		OS_REG_WRITE(ah, AR_PHY_BASE, 0x00000007);
	} else {
		OS_REG_WRITE(ah, AR_PHY_BASE, 0x00000047);
	}
	OS_DELAY(2000);

	/* Read Radio Chip Rev Extract */
	AH_PRIVATE(ah)->ah_analog5GhzRev = ar5211GetRadioRev(ah);
	if ((AH_PRIVATE(ah)->ah_analog5GhzRev & 0xf0) != RAD5_SREV_MAJOR) {
		HALDEBUG(ah, "%s: 5G Radio Chip Rev 0x%02X is not supported by "