From c787789db4f1759bf6da682774b61f0d2731af45 Mon Sep 17 00:00:00 2001
From: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Thu, 20 Aug 2009 15:09:03 +0000
Subject: mac80211: fix ath5k dma size workaround for ar71xx Atheros legacy
 hardware does not perform well on ar71xx unless both TXCFG and RXCFG are
 forced to 4 bytes. The previous patch only changed RXCFG. The OpenWrt Madwifi
 HAL also sets both RXCFG and TXCFG

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17328 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../patches/201-ath5k-WAR-for-AR71xx-PCI-bug.patch         | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

(limited to 'package/mac80211')

diff --git a/package/mac80211/patches/201-ath5k-WAR-for-AR71xx-PCI-bug.patch b/package/mac80211/patches/201-ath5k-WAR-for-AR71xx-PCI-bug.patch
index b72c5bd82..9223f4fc5 100644
--- a/package/mac80211/patches/201-ath5k-WAR-for-AR71xx-PCI-bug.patch
+++ b/package/mac80211/patches/201-ath5k-WAR-for-AR71xx-PCI-bug.patch
@@ -1,14 +1,18 @@
 --- a/drivers/net/wireless/ath/ath5k/reset.c
 +++ b/drivers/net/wireless/ath/ath5k/reset.c
-@@ -1370,8 +1370,14 @@ int ath5k_hw_reset(struct ath5k_hw *ah, 
+@@ -1368,10 +1368,18 @@ int ath5k_hw_reset(struct ath5k_hw *ah, 
+ 	 * guess we can tweak it and see how it goes ;-)
+ 	 */
  	if (ah->ah_version != AR5K_AR5210) {
++#ifndef CONFIG_ATHEROS_AR71XX
  		AR5K_REG_WRITE_BITS(ah, AR5K_TXCFG,
  			AR5K_TXCFG_SDMAMR, AR5K_DMASIZE_128B);
-+#ifndef CONFIG_ATHEROS_AR71XX
  		AR5K_REG_WRITE_BITS(ah, AR5K_RXCFG,
  			AR5K_RXCFG_SDMAMW, AR5K_DMASIZE_128B);
 +#else
 +		/* WAR for AR71xx PCI bug */
++		AR5K_REG_WRITE_BITS(ah, AR5K_TXCFG,
++			AR5K_TXCFG_SDMAMR, AR5K_DMASIZE_4B);
 +		AR5K_REG_WRITE_BITS(ah, AR5K_RXCFG,
 +			AR5K_RXCFG_SDMAMW, AR5K_DMASIZE_4B);
 +#endif
@@ -17,14 +21,16 @@
  	/* Pre-enable interrupts on 5211/5212*/
 --- a/drivers/net/wireless/ath/ath5k/initvals.c
 +++ b/drivers/net/wireless/ath/ath5k/initvals.c
-@@ -59,7 +59,12 @@ static const struct ath5k_ini ar5210_ini
+@@ -58,8 +58,14 @@ static const struct ath5k_ini ar5210_ini
+ 	{ AR5K_IMR,		0 },
  	{ AR5K_IER,		AR5K_IER_DISABLE },
  	{ AR5K_BSR,		0, AR5K_INI_READ },
- 	{ AR5K_TXCFG,		AR5K_DMASIZE_128B },
 +#ifndef CONFIG_ATHEROS_AR71XX
+ 	{ AR5K_TXCFG,		AR5K_DMASIZE_128B },
  	{ AR5K_RXCFG,		AR5K_DMASIZE_128B },
 +#else
 +	/* WAR for AR71xx PCI bug */
++	{ AR5K_TXCFG,		AR5K_DMASIZE_4B },
 +	{ AR5K_RXCFG,		AR5K_DMASIZE_4B },
 +#endif
  	{ AR5K_CFG,		AR5K_INIT_CFG },
-- 
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