diff options
| -rw-r--r-- | package/kernel/mac80211/patches/300-pending_work.patch | 116 | ||||
| -rw-r--r-- | package/kernel/mac80211/patches/540-ath9k_reduce_ani_interval.patch | 2 |
2 files changed, 117 insertions, 1 deletions
diff --git a/package/kernel/mac80211/patches/300-pending_work.patch b/package/kernel/mac80211/patches/300-pending_work.patch index e324d9f..1a68845 100644 --- a/package/kernel/mac80211/patches/300-pending_work.patch +++ b/package/kernel/mac80211/patches/300-pending_work.patch @@ -1,3 +1,41 @@ +commit 1abdeca3c6fb9cf1f84f85e78ed8d1c33bd69db0 +Author: Felix Fietkau <nbd@openwrt.org> +Date: Fri Feb 28 18:52:56 2014 +0100 + + ath9k_hw: tweak noise immunity thresholds for older chipsets + + Older chipsets are more sensitive to high PHY error counts, and the + current noise immunity thresholds were based on tests run at QCA with + newer chipsets. + + This patch brings back the values from the old ANI implementation for + old chipsets, and it also disables weak signal detection on an earlier + noise immunity level, to improve overall radio stability on affected + devices. + + Signed-off-by: Felix Fietkau <nbd@openwrt.org> + +commit 431e506da5953adc3b65af25f4b90873d528c115 +Author: Felix Fietkau <nbd@openwrt.org> +Date: Fri Feb 28 18:44:13 2014 +0100 + + ath9k_hw: toggle weak signal detection in AP mode on older chipsets + + The commit 80b4205b "ath9k: Fix OFDM weak signal detection for AP mode" + prevented weak signal detection changes from taking effect in AP mode on + all chipsets, claiming it is "not allowed". + + The main reason for not disabling weak signal detection in AP mode is + that typically beacon RSSI is used to track whether it is needed to + boost range, and this is unavailable in AP mode for obvious reasons. + + The problem with not disabling weak signal detection is that older + chipsets are very sensitive to high PHY error counts. When faced with + heavy noise, this can lead to an excessive amount of "Failed to stop + TX DMA" errors in the field. + + Signed-off-by: Felix Fietkau <nbd@openwrt.org> + commit 98d1a6c5b14688ed030e81b889f607be308e0df9 Author: Felix Fietkau <nbd@openwrt.org> Date: Mon Feb 24 22:20:32 2014 +0100 @@ -3591,3 +3629,81 @@ Date: Thu Jan 23 20:06:34 2014 +0100 } static void ath9k_rx_skb_postprocess(struct ath_common *common, +--- a/drivers/net/wireless/ath/ath9k/ani.c ++++ b/drivers/net/wireless/ath/ath9k/ani.c +@@ -176,16 +176,26 @@ static void ath9k_hw_set_ofdm_nil(struct + if (ah->opmode == NL80211_IFTYPE_STATION && + BEACON_RSSI(ah) <= ATH9K_ANI_RSSI_THR_HIGH) + weak_sig = true; +- + /* +- * OFDM Weak signal detection is always enabled for AP mode. ++ * Newer chipsets are better at dealing with high PHY error counts - ++ * keep weak signal detection enabled when no RSSI threshold is ++ * available to determine if it is needed (mode != STA) + */ +- if (ah->opmode != NL80211_IFTYPE_AP && +- aniState->ofdmWeakSigDetect != weak_sig) { +- ath9k_hw_ani_control(ah, +- ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION, +- entry_ofdm->ofdm_weak_signal_on); +- } ++ else if (AR_SREV_9300_20_OR_LATER(ah) && ++ ah->opmode != NL80211_IFTYPE_STATION) ++ weak_sig = true; ++ ++ /* Older chipsets are more sensitive to high PHY error counts */ ++ else if (!AR_SREV_9300_20_OR_LATER(ah) && ++ aniState->ofdmNoiseImmunityLevel >= 8) ++ weak_sig = false; ++ ++ if (aniState->ofdmWeakSigDetect != weak_sig) ++ ath9k_hw_ani_control(ah, ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION, ++ weak_sig); ++ ++ if (!AR_SREV_9300_20_OR_LATER(ah)) ++ return; + + if (aniState->ofdmNoiseImmunityLevel >= ATH9K_ANI_OFDM_DEF_LEVEL) { + ah->config.ofdm_trig_high = ATH9K_ANI_OFDM_TRIG_HIGH; +@@ -483,10 +493,17 @@ void ath9k_hw_ani_init(struct ath_hw *ah + + ath_dbg(common, ANI, "Initialize ANI\n"); + +- ah->config.ofdm_trig_high = ATH9K_ANI_OFDM_TRIG_HIGH; +- ah->config.ofdm_trig_low = ATH9K_ANI_OFDM_TRIG_LOW; +- ah->config.cck_trig_high = ATH9K_ANI_CCK_TRIG_HIGH; +- ah->config.cck_trig_low = ATH9K_ANI_CCK_TRIG_LOW; ++ if (AR_SREV_9300_20_OR_LATER(ah)) { ++ ah->config.ofdm_trig_high = ATH9K_ANI_OFDM_TRIG_HIGH; ++ ah->config.ofdm_trig_low = ATH9K_ANI_OFDM_TRIG_LOW; ++ ah->config.cck_trig_high = ATH9K_ANI_CCK_TRIG_HIGH; ++ ah->config.cck_trig_low = ATH9K_ANI_CCK_TRIG_LOW; ++ } else { ++ ah->config.ofdm_trig_high = ATH9K_ANI_OFDM_TRIG_HIGH_OLD; ++ ah->config.ofdm_trig_low = ATH9K_ANI_OFDM_TRIG_LOW_OLD; ++ ah->config.cck_trig_high = ATH9K_ANI_CCK_TRIG_HIGH_OLD; ++ ah->config.cck_trig_low = ATH9K_ANI_CCK_TRIG_LOW_OLD; ++ } + + ani->spurImmunityLevel = ATH9K_ANI_SPUR_IMMUNE_LVL; + ani->firstepLevel = ATH9K_ANI_FIRSTEP_LVL; +--- a/drivers/net/wireless/ath/ath9k/ani.h ++++ b/drivers/net/wireless/ath/ath9k/ani.h +@@ -22,12 +22,16 @@ + /* units are errors per second */ + #define ATH9K_ANI_OFDM_TRIG_HIGH 3500 + #define ATH9K_ANI_OFDM_TRIG_HIGH_BELOW_INI 1000 ++#define ATH9K_ANI_OFDM_TRIG_HIGH_OLD 500 + + #define ATH9K_ANI_OFDM_TRIG_LOW 400 + #define ATH9K_ANI_OFDM_TRIG_LOW_ABOVE_INI 900 ++#define ATH9K_ANI_OFDM_TRIG_LOW_OLD 200 + + #define ATH9K_ANI_CCK_TRIG_HIGH 600 ++#define ATH9K_ANI_CCK_TRIG_HIGH_OLD 200 + #define ATH9K_ANI_CCK_TRIG_LOW 300 ++#define ATH9K_ANI_CCK_TRIG_LOW_OLD 100 + + #define ATH9K_ANI_SPUR_IMMUNE_LVL 3 + #define ATH9K_ANI_FIRSTEP_LVL 2 diff --git a/package/kernel/mac80211/patches/540-ath9k_reduce_ani_interval.patch b/package/kernel/mac80211/patches/540-ath9k_reduce_ani_interval.patch index 7c24f46..e899903 100644 --- a/package/kernel/mac80211/patches/540-ath9k_reduce_ani_interval.patch +++ b/package/kernel/mac80211/patches/540-ath9k_reduce_ani_interval.patch @@ -1,6 +1,6 @@ --- a/drivers/net/wireless/ath/ath9k/ani.h +++ b/drivers/net/wireless/ath/ath9k/ani.h -@@ -38,7 +38,7 @@ +@@ -42,7 +42,7 @@ #define ATH9K_ANI_PERIOD 300 /* in ms */ |