mirror of https://github.com/hak5/openwrt.git
142 lines
4.5 KiB
Diff
142 lines
4.5 KiB
Diff
--- a/drivers/net/wireless/ath/ath9k/mac.c
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+++ b/drivers/net/wireless/ath/ath9k/mac.c
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@@ -170,84 +170,30 @@ void ath9k_hw_abort_tx_dma(struct ath_hw
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}
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EXPORT_SYMBOL(ath9k_hw_abort_tx_dma);
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-bool ath9k_hw_stoptxdma(struct ath_hw *ah, u32 q)
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+bool ath9k_hw_stop_dma_queue(struct ath_hw *ah, u32 q)
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{
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-#define ATH9K_TX_STOP_DMA_TIMEOUT 4000 /* usec */
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+#define ATH9K_TX_STOP_DMA_TIMEOUT 1000 /* usec */
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#define ATH9K_TIME_QUANTUM 100 /* usec */
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- struct ath_common *common = ath9k_hw_common(ah);
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- struct ath9k_hw_capabilities *pCap = &ah->caps;
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- struct ath9k_tx_queue_info *qi;
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- u32 tsfLow, j, wait;
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- u32 wait_time = ATH9K_TX_STOP_DMA_TIMEOUT / ATH9K_TIME_QUANTUM;
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-
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- if (q >= pCap->total_queues) {
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- ath_dbg(common, ATH_DBG_QUEUE,
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- "Stopping TX DMA, invalid queue: %u\n", q);
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- return false;
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- }
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-
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- qi = &ah->txq[q];
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- if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
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- ath_dbg(common, ATH_DBG_QUEUE,
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- "Stopping TX DMA, inactive queue: %u\n", q);
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- return false;
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- }
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+ int wait_time = ATH9K_TX_STOP_DMA_TIMEOUT / ATH9K_TIME_QUANTUM;
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+ int wait;
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REG_WRITE(ah, AR_Q_TXD, 1 << q);
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for (wait = wait_time; wait != 0; wait--) {
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if (ath9k_hw_numtxpending(ah, q) == 0)
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break;
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- udelay(ATH9K_TIME_QUANTUM);
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- }
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- if (ath9k_hw_numtxpending(ah, q)) {
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- ath_dbg(common, ATH_DBG_QUEUE,
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- "%s: Num of pending TX Frames %d on Q %d\n",
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- __func__, ath9k_hw_numtxpending(ah, q), q);
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-
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- for (j = 0; j < 2; j++) {
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- tsfLow = REG_READ(ah, AR_TSF_L32);
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- REG_WRITE(ah, AR_QUIET2,
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- SM(10, AR_QUIET2_QUIET_DUR));
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- REG_WRITE(ah, AR_QUIET_PERIOD, 100);
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- REG_WRITE(ah, AR_NEXT_QUIET_TIMER, tsfLow >> 10);
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- REG_SET_BIT(ah, AR_TIMER_MODE,
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- AR_QUIET_TIMER_EN);
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-
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- if ((REG_READ(ah, AR_TSF_L32) >> 10) == (tsfLow >> 10))
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- break;
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-
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- ath_dbg(common, ATH_DBG_QUEUE,
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- "TSF has moved while trying to set quiet time TSF: 0x%08x\n",
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- tsfLow);
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- }
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-
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- REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
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-
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- udelay(200);
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- REG_CLR_BIT(ah, AR_TIMER_MODE, AR_QUIET_TIMER_EN);
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-
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- wait = wait_time;
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- while (ath9k_hw_numtxpending(ah, q)) {
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- if ((--wait) == 0) {
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- ath_err(common,
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- "Failed to stop TX DMA in 100 msec after killing last frame\n");
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- break;
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- }
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- udelay(ATH9K_TIME_QUANTUM);
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- }
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-
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- REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
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+ udelay(ATH9K_TIME_QUANTUM);
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}
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REG_WRITE(ah, AR_Q_TXD, 0);
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+
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return wait != 0;
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#undef ATH9K_TX_STOP_DMA_TIMEOUT
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#undef ATH9K_TIME_QUANTUM
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}
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-EXPORT_SYMBOL(ath9k_hw_stoptxdma);
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+EXPORT_SYMBOL(ath9k_hw_stop_dma_queue);
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void ath9k_hw_gettxintrtxqs(struct ath_hw *ah, u32 *txqs)
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{
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--- a/drivers/net/wireless/ath/ath9k/mac.h
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+++ b/drivers/net/wireless/ath/ath9k/mac.h
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@@ -675,7 +675,7 @@ void ath9k_hw_txstart(struct ath_hw *ah,
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void ath9k_hw_cleartxdesc(struct ath_hw *ah, void *ds);
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u32 ath9k_hw_numtxpending(struct ath_hw *ah, u32 q);
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bool ath9k_hw_updatetxtriglevel(struct ath_hw *ah, bool bIncTrigLevel);
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-bool ath9k_hw_stoptxdma(struct ath_hw *ah, u32 q);
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+bool ath9k_hw_stop_dma_queue(struct ath_hw *ah, u32 q);
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void ath9k_hw_abort_tx_dma(struct ath_hw *ah);
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void ath9k_hw_gettxintrtxqs(struct ath_hw *ah, u32 *txqs);
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bool ath9k_hw_set_txq_props(struct ath_hw *ah, int q,
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--- a/drivers/net/wireless/ath/ath9k/beacon.c
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+++ b/drivers/net/wireless/ath/ath9k/beacon.c
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@@ -373,6 +373,7 @@ void ath_beacon_tasklet(unsigned long da
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ath_dbg(common, ATH_DBG_BSTUCK,
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"missed %u consecutive beacons\n",
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sc->beacon.bmisscnt);
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+ ath9k_hw_stop_dma_queue(ah, sc->beacon.beaconq);
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ath9k_hw_bstuck_nfcal(ah);
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} else if (sc->beacon.bmisscnt >= BSTUCK_THRESH) {
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ath_dbg(common, ATH_DBG_BSTUCK,
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@@ -450,16 +451,6 @@ void ath_beacon_tasklet(unsigned long da
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sc->beacon.updateslot = OK;
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}
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if (bfaddr != 0) {
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- /*
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- * Stop any current dma and put the new frame(s) on the queue.
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- * This should never fail since we check above that no frames
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- * are still pending on the queue.
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- */
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- if (!ath9k_hw_stoptxdma(ah, sc->beacon.beaconq)) {
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- ath_err(common, "beacon queue %u did not stop?\n",
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- sc->beacon.beaconq);
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- }
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-
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/* NB: cabq traffic should already be queued and primed */
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ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bfaddr);
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ath9k_hw_txstart(ah, sc->beacon.beaconq);
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@@ -780,7 +771,7 @@ void ath9k_set_beaconing_status(struct a
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ah->imask &= ~ATH9K_INT_SWBA;
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ath9k_hw_set_interrupts(ah, ah->imask);
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tasklet_kill(&sc->bcon_tasklet);
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- ath9k_hw_stoptxdma(ah, sc->beacon.beaconq);
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+ ath9k_hw_stop_dma_queue(ah, sc->beacon.beaconq);
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}
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ath9k_ps_restore(sc);
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}
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