diff options
Diffstat (limited to 'drivers/net/wireless/ath9k/mac.c')
| -rw-r--r-- | drivers/net/wireless/ath9k/mac.c | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/drivers/net/wireless/ath9k/mac.c b/drivers/net/wireless/ath9k/mac.c index af32d091dc3..ef832a5ebbd 100644 --- a/drivers/net/wireless/ath9k/mac.c +++ b/drivers/net/wireless/ath9k/mac.c @@ -107,14 +107,32 @@ bool ath9k_hw_updatetxtriglevel(struct ath_hal *ah, bool bIncTrigLevel) bool ath9k_hw_stoptxdma(struct ath_hal *ah, u32 q) { +#define ATH9K_TX_STOP_DMA_TIMEOUT 4000 /* usec */ +#define ATH9K_TIME_QUANTUM 100 /* usec */ + + struct ath_hal_5416 *ahp = AH5416(ah); + struct ath9k_hw_capabilities *pCap = &ah->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) { + DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "invalid queue num %u\n", q); + return false; + } + + qi = &ahp->ah_txq[q]; + if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) { + DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "inactive queue\n"); + return false; + } REG_WRITE(ah, AR_Q_TXD, 1 << q); - for (wait = 1000; wait != 0; wait--) { + for (wait = wait_time; wait != 0; wait--) { if (ath9k_hw_numtxpending(ah, q) == 0) break; - udelay(100); + udelay(ATH9K_TIME_QUANTUM); } if (ath9k_hw_numtxpending(ah, q)) { @@ -144,8 +162,7 @@ bool ath9k_hw_stoptxdma(struct ath_hal *ah, u32 q) udelay(200); REG_CLR_BIT(ah, AR_TIMER_MODE, AR_QUIET_TIMER_EN); - wait = 1000; - + wait = wait_time; while (ath9k_hw_numtxpending(ah, q)) { if ((--wait) == 0) { DPRINTF(ah->ah_sc, ATH_DBG_XMIT, @@ -153,15 +170,17 @@ bool ath9k_hw_stoptxdma(struct ath_hal *ah, u32 q) "msec after killing last frame\n"); break; } - udelay(100); + udelay(ATH9K_TIME_QUANTUM); } REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH); } REG_WRITE(ah, AR_Q_TXD, 0); - return wait != 0; + +#undef ATH9K_TX_STOP_DMA_TIMEOUT +#undef ATH9K_TIME_QUANTUM } bool ath9k_hw_filltxdesc(struct ath_hal *ah, struct ath_desc *ds, |