From a1ee44e27fb86dc3333cad4108e1e25f94e3cfb9 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Wed, 26 Jan 2011 11:33:50 +0000 Subject: mac80211: Improve ath5k/ar71xx PCI bug WAR It has been confirmed by Atheros that this PCI bug affects the RX side only, so we can keep the 128B DMA size for TX. With this change we can double the thruput of ath5k from 15Mps to 30Mbps. We have been using this patch since more than 6 month in a production environment without problems and a significant performance improvement. It has also been said to fix HW encryption: http://www.mail-archive.com/ath5k-devel@lists.ath5k.org/msg04311.html Patch from: kentarou matsuyama git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25104 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- package/mac80211/patches/201-ath5k-WAR-for-AR71xx-PCI-bug.patch | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'package/mac80211/patches/201-ath5k-WAR-for-AR71xx-PCI-bug.patch') 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 b216b9dbeb..d181971316 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 @@ -9,7 +9,7 @@ { AR5K_RXCFG, AR5K_DMASIZE_128B }, +#else + /* WAR for AR71xx PCI bug */ -+ { AR5K_TXCFG, AR5K_DMASIZE_4B }, ++ { AR5K_TXCFG, AR5K_DMASIZE_128B }, + { AR5K_RXCFG, AR5K_DMASIZE_4B }, +#endif { AR5K_CFG, AR5K_INIT_CFG }, @@ -29,7 +29,7 @@ +#else + /* WAR for AR71xx PCI bug */ + AR5K_REG_WRITE_BITS(ah, AR5K_TXCFG, -+ AR5K_TXCFG_SDMAMR, AR5K_DMASIZE_4B); ++ AR5K_TXCFG_SDMAMR, AR5K_DMASIZE_128B); + AR5K_REG_WRITE_BITS(ah, AR5K_RXCFG, + AR5K_RXCFG_SDMAMW, AR5K_DMASIZE_4B); +#endif -- cgit v1.2.3