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path: root/drivers/net/wireless/ath/ath9k/hw.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/hw.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/hw.c25
1 files changed, 17 insertions, 8 deletions
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 7f25da8444fe..15dfefcf2d0f 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1172,6 +1172,7 @@ u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan)
static inline void ath9k_hw_set_dma(struct ath_hw *ah)
{
struct ath_common *common = ath9k_hw_common(ah);
+ int txbuf_size;
ENABLE_REGWRITE_BUFFER(ah);
@@ -1225,13 +1226,17 @@ static inline void ath9k_hw_set_dma(struct ath_hw *ah)
* So set the usable tx buf size also to half to
* avoid data/delimiter underruns
*/
- REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
- AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE);
- } else if (!AR_SREV_9271(ah)) {
- REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
- AR_PCU_TXBUF_CTRL_USABLE_SIZE);
+ txbuf_size = AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE;
+ } else if (AR_SREV_9340_13_OR_LATER(ah)) {
+ /* Uses fewer entries for AR934x v1.3+ to prevent rx overruns */
+ txbuf_size = AR_9340_PCU_TXBUF_CTRL_USABLE_SIZE;
+ } else {
+ txbuf_size = AR_PCU_TXBUF_CTRL_USABLE_SIZE;
}
+ if (!AR_SREV_9271(ah))
+ REG_WRITE(ah, AR_PCU_TXBUF_CTRL, txbuf_size);
+
REGWRITE_BUFFER_FLUSH(ah);
if (AR_SREV_9300_20_OR_LATER(ah))
@@ -1306,9 +1311,13 @@ static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
AR_RTC_RC_COLD_RESET | AR_RTC_RC_WARM_RESET;
} else {
tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE);
- if (tmpReg &
- (AR_INTR_SYNC_LOCAL_TIMEOUT |
- AR_INTR_SYNC_RADM_CPL_TIMEOUT)) {
+ if (AR_SREV_9340(ah))
+ tmpReg &= AR9340_INTR_SYNC_LOCAL_TIMEOUT;
+ else
+ tmpReg &= AR_INTR_SYNC_LOCAL_TIMEOUT |
+ AR_INTR_SYNC_RADM_CPL_TIMEOUT;
+
+ if (tmpReg) {
u32 val;
REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
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