From 57b32227cd7f1f81f4143d8bc82a5ffe37ab4df9 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Thu, 15 Apr 2010 17:39:22 -0400
Subject: [PATCH] ath9k_hw: Update ath9k_hw_set_dma for AR9300
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/ath/ath9k/hw.c | 18 +++++++++++++++---
drivers/net/wireless/ath/ath9k/reg.h | 6 ++++++
2 files changed, 21 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index ccd819a4a816..fd146c8d4cd8 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -836,13 +836,16 @@ 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);
u32 regval;
/*
* set AHB_MODE not to do cacheline prefetches
*/
- regval = REG_READ(ah, AR_AHB_MODE);
- REG_WRITE(ah, AR_AHB_MODE, regval | AR_AHB_PREFETCH_RD_EN);
+ if (!AR_SREV_9300_20_OR_LATER(ah)) {
+ regval = REG_READ(ah, AR_AHB_MODE);
+ REG_WRITE(ah, AR_AHB_MODE, regval | AR_AHB_PREFETCH_RD_EN);
+ }
/*
* let mac dma reads be in 128 byte chunks
@@ -855,7 +858,8 @@ static inline void ath9k_hw_set_dma(struct ath_hw *ah)
* The initial value depends on whether aggregation is enabled, and is
* adjusted whenever underruns are detected.
*/
- REG_RMW_FIELD(ah, AR_TXCFG, AR_FTRIG, ah->tx_trig_level);
+ if (!AR_SREV_9300_20_OR_LATER(ah))
+ REG_RMW_FIELD(ah, AR_TXCFG, AR_FTRIG, ah->tx_trig_level);
/*
* let mac dma writes be in 128 byte chunks
@@ -868,6 +872,14 @@ static inline void ath9k_hw_set_dma(struct ath_hw *ah)
*/
REG_WRITE(ah, AR_RXFIFO_CFG, 0x200);
+ if (AR_SREV_9300_20_OR_LATER(ah)) {
+ REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_HP, 0x1);
+ REG_RMW_FIELD(ah, AR_RXBP_THRESH, AR_RXBP_THRESH_LP, 0x1);
+
+ ath9k_hw_set_rx_bufsize(ah, common->rx_bufsize -
+ ah->caps.rx_status_len);
+ }
+
/*
* reduce the number of usable entries in PCU TXBUF to avoid
* wrap around issues.
diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h
index 12f16215c588..2ca478c802c4 100644
--- a/drivers/net/wireless/ath/ath9k/reg.h
+++ b/drivers/net/wireless/ath/ath9k/reg.h
@@ -39,6 +39,12 @@
#define AR_CFG_PCI_MASTER_REQ_Q_THRESH 0x00060000
#define AR_CFG_PCI_MASTER_REQ_Q_THRESH_S 17
+#define AR_RXBP_THRESH 0x0018
+#define AR_RXBP_THRESH_HP 0x0000000f
+#define AR_RXBP_THRESH_HP_S 0
+#define AR_RXBP_THRESH_LP 0x00003f00
+#define AR_RXBP_THRESH_LP_S 8
+
#define AR_MIRT 0x0020
#define AR_MIRT_VAL 0x0000ffff
#define AR_MIRT_VAL_S 16
--
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