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-rw-r--r--package/mac80211/patches/573-ath9k_beacon_stop.patch141
1 files changed, 141 insertions, 0 deletions
diff --git a/package/mac80211/patches/573-ath9k_beacon_stop.patch b/package/mac80211/patches/573-ath9k_beacon_stop.patch
new file mode 100644
index 0000000000..ea79ab151f
--- /dev/null
+++ b/package/mac80211/patches/573-ath9k_beacon_stop.patch
@@ -0,0 +1,141 @@
+--- a/drivers/net/wireless/ath/ath9k/mac.c
++++ b/drivers/net/wireless/ath/ath9k/mac.c
+@@ -174,84 +174,30 @@ bool ath9k_hw_abort_tx_dma(struct ath_hw
+ }
+ EXPORT_SYMBOL(ath9k_hw_abort_tx_dma);
+
+-bool ath9k_hw_stoptxdma(struct ath_hw *ah, u32 q)
++bool ath9k_hw_stop_dma_queue(struct ath_hw *ah, u32 q)
+ {
+-#define ATH9K_TX_STOP_DMA_TIMEOUT 4000 /* usec */
++#define ATH9K_TX_STOP_DMA_TIMEOUT 1000 /* usec */
+ #define ATH9K_TIME_QUANTUM 100 /* usec */
+- struct ath_common *common = ath9k_hw_common(ah);
+- struct ath9k_hw_capabilities *pCap = &ah->caps;
+- struct ath9k_tx_queue_info *qi;
+- u32 tsfLow, j, wait;
+- u32 wait_time = ATH9K_TX_STOP_DMA_TIMEOUT / ATH9K_TIME_QUANTUM;
+-
+- if (q >= pCap->total_queues) {
+- ath_dbg(common, ATH_DBG_QUEUE,
+- "Stopping TX DMA, invalid queue: %u\n", q);
+- return false;
+- }
+-
+- qi = &ah->txq[q];
+- if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
+- ath_dbg(common, ATH_DBG_QUEUE,
+- "Stopping TX DMA, inactive queue: %u\n", q);
+- return false;
+- }
++ int wait_time = ATH9K_TX_STOP_DMA_TIMEOUT / ATH9K_TIME_QUANTUM;
++ int wait;
+
+ REG_WRITE(ah, AR_Q_TXD, 1 << q);
+
+ for (wait = wait_time; wait != 0; wait--) {
+ if (ath9k_hw_numtxpending(ah, q) == 0)
+ break;
+- udelay(ATH9K_TIME_QUANTUM);
+- }
+
+- if (ath9k_hw_numtxpending(ah, q)) {
+- ath_dbg(common, ATH_DBG_QUEUE,
+- "%s: Num of pending TX Frames %d on Q %d\n",
+- __func__, ath9k_hw_numtxpending(ah, q), q);
+-
+- for (j = 0; j < 2; j++) {
+- tsfLow = REG_READ(ah, AR_TSF_L32);
+- REG_WRITE(ah, AR_QUIET2,
+- SM(10, AR_QUIET2_QUIET_DUR));
+- REG_WRITE(ah, AR_QUIET_PERIOD, 100);
+- REG_WRITE(ah, AR_NEXT_QUIET_TIMER, tsfLow >> 10);
+- REG_SET_BIT(ah, AR_TIMER_MODE,
+- AR_QUIET_TIMER_EN);
+-
+- if ((REG_READ(ah, AR_TSF_L32) >> 10) == (tsfLow >> 10))
+- break;
+-
+- ath_dbg(common, ATH_DBG_QUEUE,
+- "TSF has moved while trying to set quiet time TSF: 0x%08x\n",
+- tsfLow);
+- }
+-
+- REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
+-
+- udelay(200);
+- REG_CLR_BIT(ah, AR_TIMER_MODE, AR_QUIET_TIMER_EN);
+-
+- wait = wait_time;
+- while (ath9k_hw_numtxpending(ah, q)) {
+- if ((--wait) == 0) {
+- ath_err(common,
+- "Failed to stop TX DMA in 100 msec after killing last frame\n");
+- break;
+- }
+- udelay(ATH9K_TIME_QUANTUM);
+- }
+-
+- REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
++ udelay(ATH9K_TIME_QUANTUM);
+ }
+
+ REG_WRITE(ah, AR_Q_TXD, 0);
++
+ return wait != 0;
+
+ #undef ATH9K_TX_STOP_DMA_TIMEOUT
+ #undef ATH9K_TIME_QUANTUM
+ }
+-EXPORT_SYMBOL(ath9k_hw_stoptxdma);
++EXPORT_SYMBOL(ath9k_hw_stop_dma_queue);
+
+ void ath9k_hw_gettxintrtxqs(struct ath_hw *ah, u32 *txqs)
+ {
+--- a/drivers/net/wireless/ath/ath9k/mac.h
++++ b/drivers/net/wireless/ath/ath9k/mac.h
+@@ -675,7 +675,7 @@ void ath9k_hw_txstart(struct ath_hw *ah,
+ void ath9k_hw_cleartxdesc(struct ath_hw *ah, void *ds);
+ u32 ath9k_hw_numtxpending(struct ath_hw *ah, u32 q);
+ bool ath9k_hw_updatetxtriglevel(struct ath_hw *ah, bool bIncTrigLevel);
+-bool ath9k_hw_stoptxdma(struct ath_hw *ah, u32 q);
++bool ath9k_hw_stop_dma_queue(struct ath_hw *ah, u32 q);
+ bool ath9k_hw_abort_tx_dma(struct ath_hw *ah);
+ void ath9k_hw_gettxintrtxqs(struct ath_hw *ah, u32 *txqs);
+ bool ath9k_hw_set_txq_props(struct ath_hw *ah, int q,
+--- a/drivers/net/wireless/ath/ath9k/beacon.c
++++ b/drivers/net/wireless/ath/ath9k/beacon.c
+@@ -373,6 +373,7 @@ void ath_beacon_tasklet(unsigned long da
+ 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);
+ } else if (sc->beacon.bmisscnt >= BSTUCK_THRESH) {
+ ath_dbg(common, ATH_DBG_BSTUCK,
+@@ -450,16 +451,6 @@ void ath_beacon_tasklet(unsigned long da
+ sc->beacon.updateslot = OK;
+ }
+ if (bfaddr != 0) {
+- /*
+- * Stop any current dma and put the new frame(s) on the queue.
+- * This should never fail since we check above that no frames
+- * are still pending on the queue.
+- */
+- if (!ath9k_hw_stoptxdma(ah, sc->beacon.beaconq)) {
+- ath_err(common, "beacon queue %u did not stop?\n",
+- sc->beacon.beaconq);
+- }
+-
+ /* NB: cabq traffic should already be queued and primed */
+ ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bfaddr);
+ ath9k_hw_txstart(ah, sc->beacon.beaconq);
+@@ -780,7 +771,7 @@ void ath9k_set_beaconing_status(struct a
+ ah->imask &= ~ATH9K_INT_SWBA;
+ ath9k_hw_set_interrupts(ah, ah->imask);
+ tasklet_kill(&sc->bcon_tasklet);
+- ath9k_hw_stoptxdma(ah, sc->beacon.beaconq);
++ ath9k_hw_stop_dma_queue(ah, sc->beacon.beaconq);
+ }
+ ath9k_ps_restore(sc);
+ }