openwrt-xburst/package/mac80211/patches/300-ath9k_pending_work.patch

--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -362,7 +362,7 @@ struct ath_vif {
  * number of BSSIDs) if a given beacon does not go out even after waiting this
  * number of beacon intervals, the game's up.
  */
-#define BSTUCK_THRESH           	(9 * ATH_BCBUF)
+#define BSTUCK_THRESH           	9
 #define	ATH_BCBUF               	4
 #define ATH_DEFAULT_BINTVAL     	100 /* TU */
 #define ATH_DEFAULT_BMISS_LIMIT 	10
@@ -386,7 +386,7 @@ 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/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",
@@ -369,12 +363,13 @@ void ath_beacon_tasklet(unsigned long da
 	if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0) {
 		sc->beacon.bmisscnt++;
 
-		if (sc->beacon.bmisscnt < BSTUCK_THRESH) {
+		if (sc->beacon.bmisscnt < BSTUCK_THRESH * sc->nbcnvifs) {
 			ath_dbg(common, ATH_DBG_BSTUCK,
 				"missed %u consecutive beacons\n",
 				sc->beacon.bmisscnt);
 			ath9k_hw_stop_dma_queue(ah, sc->beacon.beaconq);
-			ath9k_hw_bstuck_nfcal(ah);
+			if (sc->beacon.bmisscnt > 4)
+				ath9k_hw_bstuck_nfcal(ah);
 		} else if (sc->beacon.bmisscnt >= BSTUCK_THRESH) {
 			ath_dbg(common, ATH_DBG_BSTUCK,
 				"beacon is officially stuck\n");
@@ -385,13 +380,6 @@ void ath_beacon_tasklet(unsigned long da
 		return;
 	}
 
-	if (sc->beacon.bmisscnt != 0) {
-		ath_dbg(common, ATH_DBG_BSTUCK,
-			"resume beacon xmit after %u misses\n",
-			sc->beacon.bmisscnt);
-		sc->beacon.bmisscnt = 0;
-	}
-
 	/*
 	 * Generate beacon frames. we are sending frames
 	 * staggered so calculate the slot for this frame based
@@ -401,8 +389,9 @@ 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 +404,7 @@ 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) {
@@ -424,6 +413,13 @@ void ath_beacon_tasklet(unsigned long da
 			bfaddr = bf->bf_daddr;
 			bc = 1;
 		}
+
+		if (sc->beacon.bmisscnt != 0) {
+			ath_dbg(common, ATH_DBG_BSTUCK,
+				"resume beacon xmit after %u misses\n",
+				sc->beacon.bmisscnt);
+			sc->beacon.bmisscnt = 0;
+		}
 	}
 
 	/*
@@ -463,13 +459,17 @@ 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 +484,14 @@ 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 +501,6 @@ 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 +634,20 @@ 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;
 
+	tsf = ath9k_hw_gettsf32(ah) + TU_TO_USEC(FUDGE);
+	intval = TU_TO_USEC(conf->beacon_interval & ATH9K_BEACON_PERIOD);
 
-	/* Pull nexttbtt forward to reflect the current TSF */
-
-	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 +658,6 @@ 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/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);
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1697,21 +1697,15 @@ 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;
@@ -1723,18 +1717,13 @@ 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);
@@ -2395,10 +2384,11 @@ 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/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -416,8 +416,6 @@ 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;
@@ -930,6 +928,7 @@ 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/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -2160,6 +2160,8 @@ static void ath9k_flush(struct ieee80211
 	if (!ath_drain_all_txq(sc, false))
 		ath_reset(sc, false);
 
+	ieee80211_wake_queues(hw);
+
 out:
 	ieee80211_queue_delayed_work(hw, &sc->tx_complete_work, 0);
 	mutex_unlock(&sc->mutex);