diff options
| -rw-r--r-- | package/mac80211/patches/561-ath9k_fix_staggered_beacons.patch | 317 |
1 files changed, 317 insertions, 0 deletions
diff --git a/package/mac80211/patches/561-ath9k_fix_staggered_beacons.patch b/package/mac80211/patches/561-ath9k_fix_staggered_beacons.patch new file mode 100644 index 000000000..08f91258f --- /dev/null +++ b/package/mac80211/patches/561-ath9k_fix_staggered_beacons.patch @@ -0,0 +1,317 @@ +--- a/drivers/net/wireless/ath/ath9k/beacon.c ++++ b/drivers/net/wireless/ath/ath9k/beacon.c +@@ -57,8 +57,8 @@ int ath_beaconq_config(struct ath_softc + + /* + * Associates the beacon frame buffer with a transmit descriptor. Will set +- * up all required antenna switch parameters, rate codes, and channel flags. +- * Beacons are always sent out at the lowest rate, and are not retried. ++ * up rate codes, and channel flags. Beacons are always sent out at the ++ * lowest rate, and are not retried. + */ + static void ath_beacon_setup(struct ath_softc *sc, struct ath_vif *avp, + struct ath_buf *bf, int rateidx) +@@ -68,7 +68,7 @@ static void ath_beacon_setup(struct ath_ + struct ath_common *common = ath9k_hw_common(ah); + struct ath_desc *ds; + struct ath9k_11n_rate_series series[4]; +- int flags, antenna, ctsrate = 0, ctsduration = 0; ++ int flags, ctsrate = 0, ctsduration = 0; + struct ieee80211_supported_band *sband; + u8 rate = 0; + +@@ -76,12 +76,6 @@ static void ath_beacon_setup(struct ath_ + flags = ATH9K_TXDESC_NOACK; + + ds->ds_link = 0; +- /* +- * Switch antenna every beacon. +- * Should only switch every beacon period, not for every SWBA +- * XXX assumes two antennae +- */ +- antenna = ((sc->beacon.ast_be_xmit / sc->nbcnvifs) & 1 ? 2 : 1); + + sband = &sc->sbands[common->hw->conf.channel->band]; + rate = sband->bitrates[rateidx].hw_value; +@@ -278,7 +272,7 @@ int ath_beacon_alloc(struct ath_softc *s + return -ENOMEM; + + tstamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp; +- sc->beacon.bc_tstamp = le64_to_cpu(tstamp); ++ sc->beacon.bc_tstamp = (u32) le64_to_cpu(tstamp); + /* Calculate a TSF adjustment factor required for staggered beacons. */ + if (avp->av_bslot > 0) { + u64 tsfadjust; +@@ -294,8 +288,8 @@ int ath_beacon_alloc(struct ath_softc *s + * adjustment. Other slots are adjusted to get the timestamp + * close to the TBTT for the BSS. + */ +- tsfadjust = intval * avp->av_bslot / ATH_BCBUF; +- avp->tsf_adjust = cpu_to_le64(TU_TO_USEC(tsfadjust)); ++ tsfadjust = TU_TO_USEC(intval * avp->av_bslot) / ATH_BCBUF; ++ avp->tsf_adjust = cpu_to_le64(tsfadjust); + + ath_dbg(common, ATH_DBG_BEACON, + "stagger beacons, bslot %d intval %u tsfadjust %llu\n", +@@ -401,8 +395,9 @@ void ath_beacon_tasklet(unsigned long da + intval = cur_conf->beacon_interval ? : ATH_DEFAULT_BINTVAL; + + tsf = ath9k_hw_gettsf64(ah); +- tsftu = TSF_TO_TU(tsf>>32, tsf); +- slot = ((tsftu % intval) * ATH_BCBUF) / intval; ++ tsf += TU_TO_USEC(ah->config.sw_beacon_response_time); ++ tsftu = TSF_TO_TU((tsf * ATH_BCBUF) >>32, tsf * ATH_BCBUF); ++ slot = (tsftu % (intval * ATH_BCBUF)) / intval; + /* + * Reverse the slot order to get slot 0 on the TBTT offset that does + * not require TSF adjustment and other slots adding +@@ -415,7 +410,7 @@ void ath_beacon_tasklet(unsigned long da + + ath_dbg(common, ATH_DBG_BEACON, + "slot %d [tsf %llu tsftu %u intval %u] vif %p\n", +- slot, tsf, tsftu, intval, vif); ++ slot, tsf, tsftu / ATH_BCBUF, intval, vif); + + bfaddr = 0; + if (vif) { +@@ -463,13 +458,17 @@ static void ath9k_beacon_init(struct ath + u32 next_beacon, + u32 beacon_period) + { +- if (beacon_period & ATH9K_BEACON_RESET_TSF) ++ if (sc->sc_flags & SC_OP_TSF_RESET) { + ath9k_ps_wakeup(sc); ++ ath9k_hw_reset_tsf(sc->sc_ah); ++ } + + ath9k_hw_beaconinit(sc->sc_ah, next_beacon, beacon_period); + +- if (beacon_period & ATH9K_BEACON_RESET_TSF) ++ if (sc->sc_flags & SC_OP_TSF_RESET) { + ath9k_ps_restore(sc); ++ sc->sc_flags &= ~SC_OP_TSF_RESET; ++ } + } + + /* +@@ -484,18 +483,14 @@ static void ath_beacon_config_ap(struct + u32 nexttbtt, intval; + + /* NB: the beacon interval is kept internally in TU's */ +- intval = conf->beacon_interval & ATH9K_BEACON_PERIOD; ++ intval = TU_TO_USEC(conf->beacon_interval & ATH9K_BEACON_PERIOD); + intval /= ATH_BCBUF; /* for staggered beacons */ + nexttbtt = intval; + +- if (sc->sc_flags & SC_OP_TSF_RESET) +- intval |= ATH9K_BEACON_RESET_TSF; +- + /* + * In AP mode we enable the beacon timers and SWBA interrupts to + * prepare beacon frames. + */ +- intval |= ATH9K_BEACON_ENA; + ah->imask |= ATH9K_INT_SWBA; + ath_beaconq_config(sc); + +@@ -505,11 +500,6 @@ static void ath_beacon_config_ap(struct + ath9k_beacon_init(sc, nexttbtt, intval); + sc->beacon.bmisscnt = 0; + ath9k_hw_set_interrupts(ah, ah->imask); +- +- /* Clear the reset TSF flag, so that subsequent beacon updation +- will not reset the HW TSF. */ +- +- sc->sc_flags &= ~SC_OP_TSF_RESET; + } + + /* +@@ -643,25 +633,20 @@ static void ath_beacon_config_adhoc(stru + { + struct ath_hw *ah = sc->sc_ah; + struct ath_common *common = ath9k_hw_common(ah); +- u64 tsf; +- u32 tsftu, intval, nexttbtt; +- +- intval = conf->beacon_interval & ATH9K_BEACON_PERIOD; +- ++ u32 tsf, delta, intval, nexttbtt; + +- /* Pull nexttbtt forward to reflect the current TSF */ ++ tsf = ath9k_hw_gettsf32(ah) + TU_TO_USEC(FUDGE); ++ intval = TU_TO_USEC(conf->beacon_interval & ATH9K_BEACON_PERIOD); + +- nexttbtt = TSF_TO_TU(sc->beacon.bc_tstamp >> 32, sc->beacon.bc_tstamp); +- if (nexttbtt == 0) +- nexttbtt = intval; +- else if (intval) +- nexttbtt = roundup(nexttbtt, intval); +- +- tsf = ath9k_hw_gettsf64(ah); +- tsftu = TSF_TO_TU((u32)(tsf>>32), (u32)tsf) + FUDGE; +- do { +- nexttbtt += intval; +- } while (nexttbtt < tsftu); ++ if (!sc->beacon.bc_tstamp) ++ nexttbtt = tsf + intval; ++ else { ++ if (tsf > sc->beacon.bc_tstamp) ++ delta = (tsf - sc->beacon.bc_tstamp); ++ else ++ delta = (tsf + 1 + (~0U - sc->beacon.bc_tstamp)); ++ nexttbtt = tsf + roundup(delta, intval); ++ } + + ath_dbg(common, ATH_DBG_BEACON, + "IBSS nexttbtt %u intval %u (%u)\n", +@@ -672,7 +657,6 @@ static void ath_beacon_config_adhoc(stru + * if we need to manually prepare beacon frames. Otherwise we use a + * self-linked tx descriptor and let the hardware deal with things. + */ +- intval |= ATH9K_BEACON_ENA; + ah->imask |= ATH9K_INT_SWBA; + + ath_beaconq_config(sc); +--- a/drivers/net/wireless/ath/ath9k/hw.c ++++ b/drivers/net/wireless/ath/ath9k/hw.c +@@ -1706,21 +1706,15 @@ void ath9k_hw_beaconinit(struct ath_hw * + case NL80211_IFTYPE_MESH_POINT: + REG_SET_BIT(ah, AR_TXCFG, + AR_TXCFG_ADHOC_BEACON_ATIM_TX_POLICY); +- REG_WRITE(ah, AR_NEXT_NDP_TIMER, +- TU_TO_USEC(next_beacon + +- (ah->atim_window ? ah-> +- atim_window : 1))); ++ REG_WRITE(ah, AR_NEXT_NDP_TIMER, next_beacon + ++ TU_TO_USEC(ah->atim_window ? ah->atim_window : 1)); + flags |= AR_NDP_TIMER_EN; + case NL80211_IFTYPE_AP: +- REG_WRITE(ah, AR_NEXT_TBTT_TIMER, TU_TO_USEC(next_beacon)); +- REG_WRITE(ah, AR_NEXT_DMA_BEACON_ALERT, +- TU_TO_USEC(next_beacon - +- ah->config. +- dma_beacon_response_time)); +- REG_WRITE(ah, AR_NEXT_SWBA, +- TU_TO_USEC(next_beacon - +- ah->config. +- sw_beacon_response_time)); ++ REG_WRITE(ah, AR_NEXT_TBTT_TIMER, next_beacon); ++ REG_WRITE(ah, AR_NEXT_DMA_BEACON_ALERT, next_beacon - ++ TU_TO_USEC(ah->config.dma_beacon_response_time)); ++ REG_WRITE(ah, AR_NEXT_SWBA, next_beacon - ++ TU_TO_USEC(ah->config.sw_beacon_response_time)); + flags |= + AR_TBTT_TIMER_EN | AR_DBA_TIMER_EN | AR_SWBA_TIMER_EN; + break; +@@ -1732,18 +1726,13 @@ void ath9k_hw_beaconinit(struct ath_hw * + break; + } + +- REG_WRITE(ah, AR_BEACON_PERIOD, TU_TO_USEC(beacon_period)); +- REG_WRITE(ah, AR_DMA_BEACON_PERIOD, TU_TO_USEC(beacon_period)); +- REG_WRITE(ah, AR_SWBA_PERIOD, TU_TO_USEC(beacon_period)); +- REG_WRITE(ah, AR_NDP_PERIOD, TU_TO_USEC(beacon_period)); ++ REG_WRITE(ah, AR_BEACON_PERIOD, beacon_period); ++ REG_WRITE(ah, AR_DMA_BEACON_PERIOD, beacon_period); ++ REG_WRITE(ah, AR_SWBA_PERIOD, beacon_period); ++ REG_WRITE(ah, AR_NDP_PERIOD, beacon_period); + + REGWRITE_BUFFER_FLUSH(ah); + +- beacon_period &= ~ATH9K_BEACON_ENA; +- if (beacon_period & ATH9K_BEACON_RESET_TSF) { +- ath9k_hw_reset_tsf(ah); +- } +- + REG_SET_BIT(ah, AR_TIMER_MODE, flags); + } + EXPORT_SYMBOL(ath9k_hw_beaconinit); +@@ -2404,10 +2393,11 @@ static u32 rightmost_index(struct ath_ge + return timer_table->gen_timer_index[b]; + } + +-static u32 ath9k_hw_gettsf32(struct ath_hw *ah) ++u32 ath9k_hw_gettsf32(struct ath_hw *ah) + { + return REG_READ(ah, AR_TSF_L32); + } ++EXPORT_SYMBOL(ath9k_hw_gettsf32); + + struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah, + void (*trigger)(void *), +--- a/drivers/net/wireless/ath/ath9k/ath9k.h ++++ b/drivers/net/wireless/ath/ath9k/ath9k.h +@@ -392,7 +392,7 @@ struct ath_beacon { + u32 beaconq; + u32 bmisscnt; + u32 ast_be_xmit; +- u64 bc_tstamp; ++ u32 bc_tstamp; + struct ieee80211_vif *bslot[ATH_BCBUF]; + int slottime; + int slotupdate; +--- a/drivers/net/wireless/ath/ath9k/hw.h ++++ b/drivers/net/wireless/ath/ath9k/hw.h +@@ -412,8 +412,6 @@ struct ath9k_beacon_state { + u32 bs_nextdtim; + u32 bs_intval; + #define ATH9K_BEACON_PERIOD 0x0000ffff +-#define ATH9K_BEACON_ENA 0x00800000 +-#define ATH9K_BEACON_RESET_TSF 0x01000000 + #define ATH9K_TSFOOR_THRESHOLD 0x00004240 /* 16k us */ + u32 bs_dtimperiod; + u16 bs_cfpperiod; +@@ -927,6 +925,7 @@ void ath9k_hw_setopmode(struct ath_hw *a + void ath9k_hw_setmcastfilter(struct ath_hw *ah, u32 filter0, u32 filter1); + void ath9k_hw_setbssidmask(struct ath_hw *ah); + void ath9k_hw_write_associd(struct ath_hw *ah); ++u32 ath9k_hw_gettsf32(struct ath_hw *ah); + u64 ath9k_hw_gettsf64(struct ath_hw *ah); + void ath9k_hw_settsf64(struct ath_hw *ah, u64 tsf64); + void ath9k_hw_reset_tsf(struct ath_hw *ah); +--- a/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c ++++ b/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c +@@ -155,7 +155,7 @@ static void ath9k_htc_beacon_config_ap(s + nexttbtt = intval; + + if (priv->op_flags & OP_TSF_RESET) { +- intval |= ATH9K_BEACON_RESET_TSF; ++ ath9k_hw_reset_tsf(priv->ah); + priv->op_flags &= ~OP_TSF_RESET; + } else { + /* +@@ -168,8 +168,6 @@ static void ath9k_htc_beacon_config_ap(s + } while (nexttbtt < tsftu); + } + +- intval |= ATH9K_BEACON_ENA; +- + if (priv->op_flags & OP_ENABLE_BEACON) + imask |= ATH9K_INT_SWBA; + +@@ -178,7 +176,7 @@ static void ath9k_htc_beacon_config_ap(s + bss_conf->beacon_interval, nexttbtt, imask); + + WMI_CMD(WMI_DISABLE_INTR_CMDID); +- ath9k_hw_beaconinit(priv->ah, nexttbtt, intval); ++ ath9k_hw_beaconinit(priv->ah, TU_TO_USEC(nexttbtt), TU_TO_USEC(intval)); + priv->bmiss_cnt = 0; + htc_imask = cpu_to_be32(imask); + WMI_CMD_BUF(WMI_ENABLE_INTR_CMDID, &htc_imask); +@@ -207,7 +205,6 @@ static void ath9k_htc_beacon_config_adho + nexttbtt += intval; + } while (nexttbtt < tsftu); + +- intval |= ATH9K_BEACON_ENA; + if (priv->op_flags & OP_ENABLE_BEACON) + imask |= ATH9K_INT_SWBA; + +@@ -216,7 +213,7 @@ static void ath9k_htc_beacon_config_adho + bss_conf->beacon_interval, nexttbtt, imask); + + WMI_CMD(WMI_DISABLE_INTR_CMDID); +- ath9k_hw_beaconinit(priv->ah, nexttbtt, intval); ++ ath9k_hw_beaconinit(priv->ah, TU_TO_USEC(nexttbtt), TU_TO_USEC(intval)); + priv->bmiss_cnt = 0; + htc_imask = cpu_to_be32(imask); + WMI_CMD_BUF(WMI_ENABLE_INTR_CMDID, &htc_imask); |