/*
* Recalibrate the lower PHY chips to account for temperature/environment
* changes.
*/
static void
ar5416DoCalibration(struct ath_hal *ah, HAL_CHANNEL_INTERNAL *ichan,
uint8_t rxchainmask, HAL_CAL_LIST *currCal, HAL_BOOL *isCalDone)
{
struct ar5416PerCal *cal = &AH5416(ah)->ah_cal;
/* Cal is assumed not done until explicitly set below */
*isCalDone = AH_FALSE;
HALDEBUG(ah, HAL_DEBUG_PERCAL,
"%s: %s Calibration, state %d, calValid 0x%x\n",
__func__, currCal->calData->calName, currCal->calState,
ichan->calValid);
/* Calibration in progress. */
if (currCal->calState == CAL_RUNNING) {
/* Check to see if it has finished. */
if (!(OS_REG_READ(ah, AR_PHY_TIMING_CTRL4) & AR_PHY_TIMING_CTRL4_DO_CAL)) {
HALDEBUG(ah, HAL_DEBUG_PERCAL,
"%s: sample %d of %d finished\n",
__func__, cal->calSamples,
currCal->calData->calNumSamples);
/*
* Collect measurements for active chains.
*/
currCal->calData->calCollect(ah);
if (++cal->calSamples >= currCal->calData->calNumSamples) {
int i, numChains = 0;
for (i = 0; i < AR5416_MAX_CHAINS; i++) {
if (rxchainmask & (1 << i))
numChains++;
}
/*
* Process accumulated data
*/
currCal->calData->calPostProc(ah, numChains);
/* Calibration has finished. */
ichan->calValid |= currCal->calData->calType;
currCal->calState = CAL_DONE;
*isCalDone = AH_TRUE;
} else {
/*
* Set-up to collect of another sub-sample.
*/
ar5416SetupMeasurement(ah, currCal);
}
}
} else if (!(ichan->calValid & currCal->calData->calType)) {
/* If current cal is marked invalid in channel, kick it off */
ar5416ResetMeasurement(ah, currCal);
}
}
/*
* Run non-periodic calibrations.
*/
static HAL_BOOL
ar5416RunInitCals(struct ath_hal *ah, int init_cal_count)
{
struct ath_hal_5416 *ahp = AH5416(ah);
struct ar5416PerCal *cal = &AH5416(ah)->ah_cal;
HAL_CHANNEL_INTERNAL ichan; /* XXX bogus */
HAL_CAL_LIST *curCal = ahp->ah_cal_curr;
HAL_BOOL isCalDone;
int i;
if (curCal == AH_NULL)
return AH_FALSE;
ichan.calValid = 0;
for (i = 0; i < init_cal_count; i++) {
/* Reset this Cal */
ar5416ResetMeasurement(ah, curCal);
/* Poll for offset calibration complete */
if (!ath_hal_wait(ah, AR_PHY_TIMING_CTRL4, AR_PHY_TIMING_CTRL4_DO_CAL, 0)) {
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: Cal %d failed to finish in 100ms.\n",
__func__, curCal->calData->calType);
/* Re-initialize list pointers for periodic cals */
cal->cal_list = cal->cal_last = cal->cal_curr = AH_NULL;
return AH_FALSE;
}
/* Run this cal */
ar5416DoCalibration(ah, &ichan, ahp->ah_rxchainmask,
curCal, &isCalDone);
if (!isCalDone)
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: init cal %d did not complete.\n",
__func__, curCal->calData->calType);
if (curCal->calNext != AH_NULL)
curCal = curCal->calNext;
}
/* Re-initialize list pointers for periodic cals */
cal->cal_list = cal->cal_last = cal->cal_curr = AH_NULL;
return AH_TRUE;
}
/*
* Internal interface to schedule periodic calibration work.
*/
HAL_BOOL
ar5416PerCalibrationN(struct ath_hal *ah, struct ieee80211_channel *chan,
u_int rxchainmask, HAL_BOOL longcal, HAL_BOOL *isCalDone)
{
struct ar5416PerCal *cal = &AH5416(ah)->ah_cal;
HAL_CAL_LIST *currCal = cal->cal_curr;
HAL_CHANNEL_INTERNAL *ichan;
int r;
OS_MARK(ah, AH_MARK_PERCAL, chan->ic_freq);
*isCalDone = AH_TRUE;
/*
* Since ath_hal calls the PerCal method with rxchainmask=0x1;
* override it with the current chainmask. The upper levels currently
* doesn't know about the chainmask.
*/
rxchainmask = AH5416(ah)->ah_rx_chainmask;
/* Invalid channel check */
ichan = ath_hal_checkchannel(ah, chan);
if (ichan == AH_NULL) {
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: invalid channel %u/0x%x; no mapping\n",
__func__, chan->ic_freq, chan->ic_flags);
return AH_FALSE;
}
/*
* For given calibration:
* 1. Call generic cal routine
* 2. When this cal is done (isCalDone) if we have more cals waiting
* (eg after reset), mask this to upper layers by not propagating
* isCalDone if it is set to TRUE.
* Instead, change isCalDone to FALSE and setup the waiting cal(s)
* to be run.
*/
if (currCal != AH_NULL &&
(currCal->calState == CAL_RUNNING ||
currCal->calState == CAL_WAITING)) {
ar5416DoCalibration(ah, ichan, rxchainmask, currCal, isCalDone);
if (*isCalDone == AH_TRUE) {
cal->cal_curr = currCal = currCal->calNext;
if (currCal->calState == CAL_WAITING) {
*isCalDone = AH_FALSE;
ar5416ResetMeasurement(ah, currCal);
}
}
}
/* Do NF cal only at longer intervals */
if (longcal) {
/* Do PA calibration if the chipset supports */
if (AH5416(ah)->ah_cal_pacal)
AH5416(ah)->ah_cal_pacal(ah, AH_FALSE);
/* Do open-loop temperature compensation if the chipset needs it */
if (ath_hal_eepromGetFlag(ah, AR_EEP_OL_PWRCTRL))
AH5416(ah)->ah_olcTempCompensation(ah);
/*
* Get the value from the previous NF cal
* and update the history buffer.
*/
r = ar5416GetNf(ah, chan);
if (r == 0 || r == -1) {
/* NF calibration result isn't valid */
HALDEBUG(ah, HAL_DEBUG_UNMASKABLE, "%s: NF calibration"
" didn't finish; delaying CCA\n", __func__);
} else {
int ret;
/*
* NF calibration result is valid.
*
* Load the NF from history buffer of the current channel.
* NF is slow time-variant, so it is OK to use a
* historical value.
*/
ret = ar5416LoadNF(ah, AH_PRIVATE(ah)->ah_curchan);
/* start NF calibration, without updating BB NF register*/
ar5416StartNFCal(ah);
/*
* If we failed calibration then tell the driver
* we failed and it should do a full chip reset
*/
if (! ret)
return AH_FALSE;
}
}
return AH_TRUE;
}
HAL_BOOL
ar5416InitCal(struct ath_hal *ah, const struct ieee80211_channel *chan)
{
struct ar5416PerCal *cal = &AH5416(ah)->ah_cal;
HAL_CHANNEL_INTERNAL *ichan;
ichan = ath_hal_checkchannel(ah, chan);
HALASSERT(ichan != AH_NULL);
/* Do initial chipset-specific calibration */
if (! AH5416(ah)->ah_cal_initcal(ah, chan)) {
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: initial chipset calibration did "
"not complete in time; noisy environment?\n", __func__);
return AH_FALSE;
}
/* If there's PA Cal, do it */
if (AH5416(ah)->ah_cal_pacal)
AH5416(ah)->ah_cal_pacal(ah, AH_TRUE);
/*
* Do NF calibration after DC offset and other CALs.
* Per system engineers, noise floor value can sometimes be 20 dB
* higher than normal value if DC offset and noise floor cal are
* triggered at the same time.
*/
OS_REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF);
/*
* This may take a while to run; make sure subsequent
* calibration routines check that this has completed
* before reading the value and triggering a subsequent
* calibration.
*/
/* Initialize list pointers */
cal->cal_list = cal->cal_last = cal->cal_curr = AH_NULL;
/*
* Enable IQ, ADC Gain, ADC DC Offset Cals
*/
if (AR_SREV_HOWL(ah) || AR_SREV_SOWL_10_OR_LATER(ah)) {
/* Setup all non-periodic, init time only calibrations */
/* XXX: Init DC Offset not working yet */
#if 0
if (ar5416IsCalSupp(ah, chan, ADC_DC_INIT_CAL)) {
INIT_CAL(&cal->adcDcCalInitData);
INSERT_CAL(cal, &cal->adcDcCalInitData);
}
/* Initialize current pointer to first element in list */
cal->cal_curr = cal->cal_list;
if (cal->ah_cal_curr != AH_NULL && !ar5416RunInitCals(ah, 0))
return AH_FALSE;
#endif
}
/* If Cals are supported, add them to list via INIT/INSERT_CAL */
if (ar5416IsCalSupp(ah, chan, ADC_GAIN_CAL)) {
INIT_CAL(&cal->adcGainCalData);
INSERT_CAL(cal, &cal->adcGainCalData);
HALDEBUG(ah, HAL_DEBUG_PERCAL,
"%s: enable ADC Gain Calibration.\n", __func__);
}
if (ar5416IsCalSupp(ah, chan, ADC_DC_CAL)) {
INIT_CAL(&cal->adcDcCalData);
INSERT_CAL(cal, &cal->adcDcCalData);
HALDEBUG(ah, HAL_DEBUG_PERCAL,
"%s: enable ADC DC Calibration.\n", __func__);
}
if (ar5416IsCalSupp(ah, chan, IQ_MISMATCH_CAL)) {
INIT_CAL(&cal->iqCalData);
INSERT_CAL(cal, &cal->iqCalData);
HALDEBUG(ah, HAL_DEBUG_PERCAL,
"%s: enable IQ Calibration.\n", __func__);
}
/* Initialize current pointer to first element in list */
cal->cal_curr = cal->cal_list;
/* Kick off measurements for the first cal */
if (cal->cal_curr != AH_NULL)
ar5416ResetMeasurement(ah, cal->cal_curr);
/* Mark all calibrations on this channel as being invalid */
ichan->calValid = 0;
return AH_TRUE;
#undef MAX_CAL_CHECK
}
/*
* Internal interface to schedule periodic calibration work.
*/
HAL_BOOL
ar5416PerCalibrationN(struct ath_hal *ah, struct ieee80211_channel *chan,
u_int rxchainmask, HAL_BOOL longcal, HAL_BOOL *isCalDone)
{
struct ar5416PerCal *cal = &AH5416(ah)->ah_cal;
HAL_CAL_LIST *currCal = cal->cal_curr;
HAL_CHANNEL_INTERNAL *ichan;
OS_MARK(ah, AH_MARK_PERCAL, chan->ic_freq);
*isCalDone = AH_TRUE;
/* Invalid channel check */
ichan = ath_hal_checkchannel(ah, chan);
if (ichan == AH_NULL) {
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: invalid channel %u/0x%x; no mapping\n",
__func__, chan->ic_freq, chan->ic_flags);
return AH_FALSE;
}
/*
* For given calibration:
* 1. Call generic cal routine
* 2. When this cal is done (isCalDone) if we have more cals waiting
* (eg after reset), mask this to upper layers by not propagating
* isCalDone if it is set to TRUE.
* Instead, change isCalDone to FALSE and setup the waiting cal(s)
* to be run.
*/
if (currCal != AH_NULL &&
(currCal->calState == CAL_RUNNING ||
currCal->calState == CAL_WAITING)) {
ar5416DoCalibration(ah, ichan, rxchainmask, currCal, isCalDone);
if (*isCalDone == AH_TRUE) {
cal->cal_curr = currCal = currCal->calNext;
if (currCal->calState == CAL_WAITING) {
*isCalDone = AH_FALSE;
ar5416ResetMeasurement(ah, currCal);
}
}
}
/* Do NF cal only at longer intervals */
if (longcal) {
/*
* Get the value from the previous NF cal
* and update the history buffer.
*/
ar5416GetNf(ah, chan);
/*
* Load the NF from history buffer of the current channel.
* NF is slow time-variant, so it is OK to use a
* historical value.
*/
ar5416LoadNF(ah, AH_PRIVATE(ah)->ah_curchan);
/* start NF calibration, without updating BB NF register*/
ar5416StartNFCal(ah);
}
return AH_TRUE;
}
/*
* Initialize Calibration infrastructure.
*/
HAL_BOOL
ar5416InitCal(struct ath_hal *ah, const struct ieee80211_channel *chan)
{
struct ar5416PerCal *cal = &AH5416(ah)->ah_cal;
HAL_CHANNEL_INTERNAL *ichan;
ichan = ath_hal_checkchannel(ah, chan);
HALASSERT(ichan != AH_NULL);
if (AR_SREV_MERLIN_10_OR_LATER(ah)) {
/* Enable Rx Filter Cal */
OS_REG_CLR_BIT(ah, AR_PHY_ADC_CTL, AR_PHY_ADC_CTL_OFF_PWDADC);
OS_REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
AR_PHY_AGC_CONTROL_FLTR_CAL);
/* Clear the carrier leak cal bit */
OS_REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_CL_CAL_ENABLE);
/* kick off the cal */
OS_REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_CAL);
/* Poll for offset calibration complete */
if (!ath_hal_wait(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_CAL, 0)) {
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: offset calibration failed to complete in 1ms; "
"noisy environment?\n", __func__);
return AH_FALSE;
}
/* Set the cl cal bit and rerun the cal a 2nd time */
/* Enable Rx Filter Cal */
OS_REG_CLR_BIT(ah, AR_PHY_ADC_CTL, AR_PHY_ADC_CTL_OFF_PWDADC);
OS_REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
AR_PHY_AGC_CONTROL_FLTR_CAL);
OS_REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_CL_CAL_ENABLE);
}
/* Calibrate the AGC */
OS_REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_CAL);
/* Poll for offset calibration complete */
if (!ath_hal_wait(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_CAL, 0)) {
HALDEBUG(ah, HAL_DEBUG_ANY,
"%s: offset calibration did not complete in 1ms; "
"noisy environment?\n", __func__);
return AH_FALSE;
}
/*
* Do NF calibration after DC offset and other CALs.
* Per system engineers, noise floor value can sometimes be 20 dB
* higher than normal value if DC offset and noise floor cal are
* triggered at the same time.
*/
OS_REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF);
/* Initialize list pointers */
cal->cal_list = cal->cal_last = cal->cal_curr = AH_NULL;
/*
* Enable IQ, ADC Gain, ADC DC Offset Cals
*/
if (AR_SREV_SOWL_10_OR_LATER(ah)) {
/* Setup all non-periodic, init time only calibrations */
/* XXX: Init DC Offset not working yet */
#if 0
if (ar5416IsCalSupp(ah, chan, ADC_DC_INIT_CAL)) {
INIT_CAL(&cal->adcDcCalInitData);
INSERT_CAL(cal, &cal->adcDcCalInitData);
}
/* Initialize current pointer to first element in list */
cal->cal_curr = cal->cal_list;
if (cal->ah_cal_curr != AH_NULL && !ar5416RunInitCals(ah, 0))
return AH_FALSE;
#endif
}
/* If Cals are supported, add them to list via INIT/INSERT_CAL */
if (ar5416IsCalSupp(ah, chan, ADC_GAIN_CAL)) {
INIT_CAL(&cal->adcGainCalData);
INSERT_CAL(cal, &cal->adcGainCalData);
HALDEBUG(ah, HAL_DEBUG_PERCAL,
"%s: enable ADC Gain Calibration.\n", __func__);
}
if (ar5416IsCalSupp(ah, chan, ADC_DC_CAL)) {
INIT_CAL(&cal->adcDcCalData);
INSERT_CAL(cal, &cal->adcDcCalData);
HALDEBUG(ah, HAL_DEBUG_PERCAL,
"%s: enable ADC DC Calibration.\n", __func__);
}
if (ar5416IsCalSupp(ah, chan, IQ_MISMATCH_CAL)) {
INIT_CAL(&cal->iqCalData);
INSERT_CAL(cal, &cal->iqCalData);
HALDEBUG(ah, HAL_DEBUG_PERCAL,
"%s: enable IQ Calibration.\n", __func__);
}
/* Initialize current pointer to first element in list */
cal->cal_curr = cal->cal_list;
/* Kick off measurements for the first cal */
if (cal->cal_curr != AH_NULL)
ar5416ResetMeasurement(ah, cal->cal_curr);
/* Mark all calibrations on this channel as being invalid */
ichan->calValid = 0;
return AH_TRUE;
}
