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authornbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2011-01-26 11:33:50 +0000
committernbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2011-01-26 11:33:50 +0000
commit10b359c8c94efee57377b579b5fdae41aaf9e51f (patch)
treec5fbe80798a7b0aeffbc62de502352e82a9e112e
parenta6c855e6e51c56d37b7abd2c7dbd43b00bc5e805 (diff)
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 <matsuyama@thinktube.com> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25104 3c298f89-4303-0410-b956-a3cf2f4a3e73
-rw-r--r--package/mac80211/patches/201-ath5k-WAR-for-AR71xx-PCI-bug.patch4
1 files changed, 2 insertions, 2 deletions
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