diff options
Diffstat (limited to 'drivers/net/wireless/ath5k/qcu.c')
| -rw-r--r-- | drivers/net/wireless/ath5k/qcu.c | 47 |
1 files changed, 36 insertions, 11 deletions
diff --git a/drivers/net/wireless/ath5k/qcu.c b/drivers/net/wireless/ath5k/qcu.c index 1b7bc50ea8eb..5094c394a4b2 100644 --- a/drivers/net/wireless/ath5k/qcu.c +++ b/drivers/net/wireless/ath5k/qcu.c @@ -148,6 +148,7 @@ int ath5k_hw_setup_tx_queue(struct ath5k_hw *ah, enum ath5k_tx_queue queue_type, */ u32 ath5k_hw_num_tx_pending(struct ath5k_hw *ah, unsigned int queue) { + u32 pending; ATH5K_TRACE(ah->ah_sc); AR5K_ASSERT_ENTRY(queue, ah->ah_capabilities.cap_queues.q_tx_num); @@ -159,7 +160,15 @@ u32 ath5k_hw_num_tx_pending(struct ath5k_hw *ah, unsigned int queue) if (ah->ah_version == AR5K_AR5210) return false; - return AR5K_QUEUE_STATUS(queue) & AR5K_QCU_STS_FRMPENDCNT; + pending = (AR5K_QUEUE_STATUS(queue) & AR5K_QCU_STS_FRMPENDCNT); + + /* It's possible to have no frames pending even if TXE + * is set. To indicate that q has not stopped return + * true */ + if (!pending && AR5K_REG_READ_Q(ah, AR5K_QCU_TXE, queue)) + return true; + + return pending; } /* @@ -324,8 +333,18 @@ int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue) /* * Set misc registers */ - ath5k_hw_reg_write(ah, AR5K_QCU_MISC_DCU_EARLY, - AR5K_QUEUE_MISC(queue)); + /* Enable DCU early termination for this queue */ + AR5K_REG_ENABLE_BITS(ah, AR5K_QUEUE_MISC(queue), + AR5K_QCU_MISC_DCU_EARLY); + + /* Enable DCU to wait for next fragment from QCU */ + AR5K_REG_ENABLE_BITS(ah, AR5K_QUEUE_DFS_MISC(queue), + AR5K_DCU_MISC_FRAG_WAIT); + + /* On Maui and Spirit use the global seqnum on DCU */ + if (ah->ah_mac_version < AR5K_SREV_AR5211) + AR5K_REG_ENABLE_BITS(ah, AR5K_QUEUE_DFS_MISC(queue), + AR5K_DCU_MISC_SEQNUM_CTL); if (tq->tqi_cbr_period) { ath5k_hw_reg_write(ah, AR5K_REG_SM(tq->tqi_cbr_period, @@ -341,7 +360,8 @@ int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue) AR5K_QCU_MISC_CBR_THRES_ENABLE); } - if (tq->tqi_ready_time) + if (tq->tqi_ready_time && + (tq->tqi_type != AR5K_TX_QUEUE_ID_CAB)) ath5k_hw_reg_write(ah, AR5K_REG_SM(tq->tqi_ready_time, AR5K_QCU_RDYTIMECFG_INTVAL) | AR5K_QCU_RDYTIMECFG_ENABLE, @@ -383,13 +403,6 @@ int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue) AR5K_DCU_MISC_ARBLOCK_CTL_S) | AR5K_DCU_MISC_POST_FR_BKOFF_DIS | AR5K_DCU_MISC_BCN_ENABLE); - - ath5k_hw_reg_write(ah, ((AR5K_TUNE_BEACON_INTERVAL - - (AR5K_TUNE_SW_BEACON_RESP - - AR5K_TUNE_DMA_BEACON_RESP) - - AR5K_TUNE_ADDITIONAL_SWBA_BACKOFF) * 1024) | - AR5K_QCU_RDYTIMECFG_ENABLE, - AR5K_QUEUE_RDYTIMECFG(queue)); break; case AR5K_TX_QUEUE_CAB: @@ -398,6 +411,13 @@ int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue) AR5K_QCU_MISC_CBREXP_DIS | AR5K_QCU_MISC_CBREXP_BCN_DIS); + ath5k_hw_reg_write(ah, ((AR5K_TUNE_BEACON_INTERVAL - + (AR5K_TUNE_SW_BEACON_RESP - + AR5K_TUNE_DMA_BEACON_RESP) - + AR5K_TUNE_ADDITIONAL_SWBA_BACKOFF) * 1024) | + AR5K_QCU_RDYTIMECFG_ENABLE, + AR5K_QUEUE_RDYTIMECFG(queue)); + AR5K_REG_ENABLE_BITS(ah, AR5K_QUEUE_DFS_MISC(queue), (AR5K_DCU_MISC_ARBLOCK_CTL_GLOBAL << AR5K_DCU_MISC_ARBLOCK_CTL_S)); @@ -413,6 +433,8 @@ int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue) break; } + /* TODO: Handle frame compression */ + /* * Enable interrupts for this tx queue * in the secondary interrupt mask registers @@ -483,6 +505,9 @@ int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue) * by setting AR5K_TXNOFRM to zero */ if (ah->ah_txq_imr_nofrm == 0) ath5k_hw_reg_write(ah, 0, AR5K_TXNOFRM); + + /* Set QCU mask for this DCU to save power */ + AR5K_REG_WRITE_Q(ah, AR5K_QUEUE_QCUMASK(queue), queue); } return 0; |