diff options
author | Simon Horman <horms@verge.net.au> | 2008-10-07 08:40:11 +1100 |
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committer | Simon Horman <horms@verge.net.au> | 2008-10-07 08:40:11 +1100 |
commit | a5e8546a8bff5d2047adc279df5753c44ba7b1a1 (patch) | |
tree | d9ca91f74d8279adbb1d3e942cc7ab145780ee29 /drivers/net/wireless/ath9k/hw.c | |
parent | cb7f6a7b716e801097b564dec3ccb58d330aef56 (diff) | |
parent | c7004482e8dcb7c3c72666395cfa98a216a4fb70 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 into lvs-next-2.6
Diffstat (limited to 'drivers/net/wireless/ath9k/hw.c')
-rw-r--r-- | drivers/net/wireless/ath9k/hw.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath9k/hw.c b/drivers/net/wireless/ath9k/hw.c index 0251e59f2f8..272c7581660 100644 --- a/drivers/net/wireless/ath9k/hw.c +++ b/drivers/net/wireless/ath9k/hw.c @@ -2526,6 +2526,11 @@ static void ath9k_ani_reset(struct ath_hal *ah) } } +/* + * 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 ath9k_hw_procmibevent(struct ath_hal *ah, const struct ath9k_node_stats *stats) { @@ -2533,18 +2538,20 @@ void ath9k_hw_procmibevent(struct ath_hal *ah, u32 phyCnt1, phyCnt2; DPRINTF(ah->ah_sc, ATH_DBG_ANI, "Processing Mib Intr\n"); - + /* Reset these counters regardless */ REG_WRITE(ah, AR_FILT_OFDM, 0); REG_WRITE(ah, AR_FILT_CCK, 0); if (!(REG_READ(ah, AR_SLP_MIB_CTRL) & AR_SLP_MIB_PENDING)) REG_WRITE(ah, AR_SLP_MIB_CTRL, AR_SLP_MIB_CLEAR); + /* Clear the mib counters and save them in the stats */ ath9k_hw_update_mibstats(ah, &ahp->ah_mibStats); ahp->ah_stats.ast_nodestats = *stats; if (!DO_ANI(ah)) return; + /* NB: these are not reset-on-read */ phyCnt1 = REG_READ(ah, AR_PHY_ERR_1); phyCnt2 = REG_READ(ah, AR_PHY_ERR_2); if (((phyCnt1 & AR_MIBCNT_INTRMASK) == AR_MIBCNT_INTRMASK) || @@ -2552,6 +2559,7 @@ void ath9k_hw_procmibevent(struct ath_hal *ah, struct ar5416AniState *aniState = ahp->ah_curani; u32 ofdmPhyErrCnt, cckPhyErrCnt; + /* NB: only use ast_ani_*errs with AH_PRIVATE_DIAG */ ofdmPhyErrCnt = phyCnt1 - aniState->ofdmPhyErrBase; ahp->ah_stats.ast_ani_ofdmerrs += ofdmPhyErrCnt - aniState->ofdmPhyErrCount; @@ -2562,11 +2570,17 @@ void ath9k_hw_procmibevent(struct ath_hal *ah, 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 > aniState->ofdmTrigHigh) ath9k_hw_ani_ofdm_err_trigger(ah); if (aniState->cckPhyErrCount > aniState->cckTrigHigh) ath9k_hw_ani_cck_err_trigger(ah); - + /* NB: always restart to insure the h/w counters are reset */ ath9k_ani_restart(ah); } } |