/*
* Do periodic processing. This routine is called from the
* driver's rx interrupt handler after processing frames.
*/
void
ar5416AniPoll(struct ath_hal *ah, const HAL_NODE_STATS *stats,
const struct ieee80211_channel *chan)
{
struct ath_hal_5212 *ahp = AH5212(ah);
struct ar5212AniState *aniState = ahp->ah_curani;
const struct ar5212AniParams *params;
int32_t listenTime;
ahp->ah_stats.ast_nodestats.ns_avgbrssi = stats->ns_avgbrssi;
/* XXX can aniState be null? */
if (aniState == AH_NULL)
return;
if (!ANI_ENA(ah))
return;
listenTime = ar5416AniGetListenTime(ah);
if (listenTime < 0) {
ahp->ah_stats.ast_ani_lneg++;
/* restart ANI period if listenTime is invalid */
ar5416AniRestart(ah, aniState);
}
/* XXX beware of overflow? */
aniState->listenTime += listenTime;
OS_MARK(ah, AH_MARK_ANI_POLL, aniState->listenTime);
params = aniState->params;
if (aniState->listenTime > 5*params->period) {
/*
* Check to see if need to lower immunity if
* 5 aniPeriods have passed
*/
updateMIBStats(ah, aniState);
if (aniState->ofdmPhyErrCount <= aniState->listenTime *
params->ofdmTrigLow/1000 &&
aniState->cckPhyErrCount <= aniState->listenTime *
params->cckTrigLow/1000)
ar5416AniLowerImmunity(ah);
ar5416AniRestart(ah, aniState);
} else if (aniState->listenTime > params->period) {
updateMIBStats(ah, aniState);
/* check to see if need to raise immunity */
if (aniState->ofdmPhyErrCount > aniState->listenTime *
params->ofdmTrigHigh / 1000) {
ar5416AniOfdmErrTrigger(ah);
ar5416AniRestart(ah, aniState);
} else if (aniState->cckPhyErrCount > aniState->listenTime *
params->cckTrigHigh / 1000) {
ar5416AniCckErrTrigger(ah);
ar5416AniRestart(ah, aniState);
}
}
}
/*
* Process a MIB interrupt. We may potentially be invoked because
* any of the MIB counters overflow/trigger so don't assume we're
* here because a PHY error counter triggered.
*/
void
ar5416ProcessMibIntr(struct ath_hal *ah, const HAL_NODE_STATS *stats)
{
struct ath_hal_5212 *ahp = AH5212(ah);
uint32_t phyCnt1, phyCnt2;
HALDEBUG(ah, HAL_DEBUG_ANI, "%s: mibc 0x%x phyCnt1 0x%x phyCnt2 0x%x "
"filtofdm 0x%x filtcck 0x%x\n",
__func__, OS_REG_READ(ah, AR_MIBC),
OS_REG_READ(ah, AR_PHYCNT1), OS_REG_READ(ah, AR_PHYCNT2),
OS_REG_READ(ah, AR_FILTOFDM), OS_REG_READ(ah, AR_FILTCCK));
/*
* First order of business is to clear whatever caused
* the interrupt so we don't keep getting interrupted.
* We have the usual mib counters that are reset-on-read
* and the additional counters that appeared starting in
* Hainan. We collect the mib counters and explicitly
* zero additional counters we are not using. Anything
* else is reset only if it caused the interrupt.
*/
/* NB: these are not reset-on-read */
phyCnt1 = OS_REG_READ(ah, AR_PHY_ERR_1);
phyCnt2 = OS_REG_READ(ah, AR_PHY_ERR_2);
/* not used, always reset them in case they are the cause */
OS_REG_WRITE(ah, AR_FILTOFDM, 0);
OS_REG_WRITE(ah, AR_FILTCCK, 0);
if ((OS_REG_READ(ah, AR_SLP_MIB_CTRL) & AR_SLP_MIB_PENDING) == 0)
OS_REG_WRITE(ah, AR_SLP_MIB_CTRL, AR_SLP_MIB_CLEAR);
/* Clear the mib counters and save them in the stats */
ar5212UpdateMibCounters(ah, &ahp->ah_mibStats);
ahp->ah_stats.ast_nodestats = *stats;
/*
* Check for an ani stat hitting the trigger threshold.
* When this happens we get a MIB interrupt and the top
* 2 bits of the counter register will be 0b11, hence
* the mask check of phyCnt?.
*/
if (((phyCnt1 & AR_MIBCNT_INTRMASK) == AR_MIBCNT_INTRMASK) ||
((phyCnt2 & AR_MIBCNT_INTRMASK) == AR_MIBCNT_INTRMASK)) {
struct ar5212AniState *aniState = ahp->ah_curani;
const struct ar5212AniParams *params = aniState->params;
uint32_t ofdmPhyErrCnt, cckPhyErrCnt;
ofdmPhyErrCnt = phyCnt1 - params->ofdmPhyErrBase;
ahp->ah_stats.ast_ani_ofdmerrs +=
ofdmPhyErrCnt - aniState->ofdmPhyErrCount;
aniState->ofdmPhyErrCount = ofdmPhyErrCnt;
cckPhyErrCnt = phyCnt2 - params->cckPhyErrBase;
ahp->ah_stats.ast_ani_cckerrs +=
cckPhyErrCnt - aniState->cckPhyErrCount;
aniState->cckPhyErrCount = cckPhyErrCnt;
/*
* NB: figure out which counter triggered. If both
* trigger we'll only deal with one as the processing
* clobbers the error counter so the trigger threshold
* check will never be true.
*/
if (aniState->ofdmPhyErrCount > params->ofdmTrigHigh)
ar5416AniOfdmErrTrigger(ah);
if (aniState->cckPhyErrCount > params->cckTrigHigh)
ar5416AniCckErrTrigger(ah);
/* NB: always restart to insure the h/w counters are reset */
ar5416AniRestart(ah, aniState);
}
}
/*
* Do periodic processing. This routine is called from the
* driver's rx interrupt handler after processing frames.
*/
void
ar5416AniPoll(struct ath_hal *ah, const struct ieee80211_channel *chan)
{
struct ath_hal_5212 *ahp = AH5212(ah);
struct ar5212AniState *aniState = ahp->ah_curani;
const struct ar5212AniParams *params;
int32_t listenTime;
/* XXX can aniState be null? */
if (aniState == AH_NULL)
return;
/* Always update from the MIB, for statistics gathering */
listenTime = ar5416AniGetListenTime(ah);
if (!ANI_ENA(ah))
return;
if (listenTime < 0) {
ahp->ah_stats.ast_ani_lneg++;
/* restart ANI period if listenTime is invalid */
ar5416AniRestart(ah, aniState);
}
/* XXX beware of overflow? */
aniState->listenTime += listenTime;
OS_MARK(ah, AH_MARK_ANI_POLL, aniState->listenTime);
params = aniState->params;
if (aniState->listenTime > 5*params->period) {
/*
* Check to see if need to lower immunity if
* 5 aniPeriods have passed
*/
updateMIBStats(ah, aniState);
if (aniState->ofdmPhyErrCount <= aniState->listenTime *
params->ofdmTrigLow/1000 &&
aniState->cckPhyErrCount <= aniState->listenTime *
params->cckTrigLow/1000)
ar5416AniLowerImmunity(ah);
ar5416AniRestart(ah, aniState);
} else if (aniState->listenTime > params->period) {
updateMIBStats(ah, aniState);
/* check to see if need to raise immunity */
if (aniState->ofdmPhyErrCount > aniState->listenTime *
params->ofdmTrigHigh / 1000) {
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: OFDM err %u listenTime %u\n", __func__,
aniState->ofdmPhyErrCount, aniState->listenTime);
ar5416AniOfdmErrTrigger(ah);
ar5416AniRestart(ah, aniState);
} else if (aniState->cckPhyErrCount > aniState->listenTime *
params->cckTrigHigh / 1000) {
HALDEBUG(ah, HAL_DEBUG_ANI,
"%s: CCK err %u listenTime %u\n", __func__,
aniState->ofdmPhyErrCount, aniState->listenTime);
ar5416AniCckErrTrigger(ah);
ar5416AniRestart(ah, aniState);
}
}
}