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author | Felix Fietkau <nbd@openwrt.org> | 2014-03-11 15:31:50 +0000 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2014-03-11 15:31:50 +0000 |
commit | e7e3c5ac9adb036c6599f7dfeb699aae7886e931 (patch) | |
tree | b007efb63f69e8eea721bad21eed258bb61b6840 /package/kernel/mac80211/patches/300-pending_work.patch | |
parent | a95e27ea6fc26e8b77c4483ea66c9f758a4008cd (diff) | |
download | upstream-e7e3c5ac9adb036c6599f7dfeb699aae7886e931.tar.gz upstream-e7e3c5ac9adb036c6599f7dfeb699aae7886e931.tar.bz2 upstream-e7e3c5ac9adb036c6599f7dfeb699aae7886e931.zip |
ath9k: further improvements to noise immunity handling on older chips
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39879 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'package/kernel/mac80211/patches/300-pending_work.patch')
-rw-r--r-- | package/kernel/mac80211/patches/300-pending_work.patch | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/300-pending_work.patch b/package/kernel/mac80211/patches/300-pending_work.patch index a74bd2b3eb..897f6c4193 100644 --- a/package/kernel/mac80211/patches/300-pending_work.patch +++ b/package/kernel/mac80211/patches/300-pending_work.patch @@ -1,3 +1,38 @@ +commit 3a0f984b1cdcd6a9f8c441635ef3b05d58547f4e +Author: Felix Fietkau <nbd@openwrt.org> +Date: Tue Mar 11 14:03:32 2014 +0100 + + ath9k_hw: set ANI firstep as absolute values instead of relative + + On older chips, the INI value differ in similar ways as cycpwr_thr1, so + convert it to absolute values as well. + + Since the ANI algorithm is different here compared to the old + implementation (fewer steps, controlled at a different point in time), + it makes sense to use values similar to what would be applied for newer + chips, just without relying on INI defaults. + + Signed-off-by: Felix Fietkau <nbd@openwrt.org> + +commit 91d70d40400c569b49605b78fd7c43e9405694f4 +Author: Felix Fietkau <nbd@openwrt.org> +Date: Tue Mar 11 14:00:37 2014 +0100 + + ath9k_hw: set ANI cycpwr_thr1 as absolute values instead of relative + + The table was copied from the ANI implementation of AR9300. It assumes + that the INI values contain a baseline value that is usable as reference + from which to increase/decrease based on the noise immunity value. + + On older chips, the differences are bigger and especially AR5008/AR9001 + are configured to much more sensitive values than what is useful. + + Improve ANI behavior by reverting to the absolute values used in the + previous implementation (expressed as a simple formula instead of the + old table). + + Signed-off-by: Felix Fietkau <nbd@openwrt.org> + commit c977493766310a825f406836636ffd66e1447783 Author: Felix Fietkau <nbd@openwrt.org> Date: Mon Mar 10 19:52:56 2014 +0100 @@ -3942,3 +3977,136 @@ Date: Thu Jan 23 20:06:34 2014 +0100 #define ATH9K_ANI_SPUR_IMMUNE_LVL 3 #define ATH9K_ANI_FIRSTEP_LVL 2 +--- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c ++++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c +@@ -26,10 +26,6 @@ static const int firstep_table[] = + /* level: 0 1 2 3 4 5 6 7 8 */ + { -4, -2, 0, 2, 4, 6, 8, 10, 12 }; /* lvl 0-8, default 2 */ + +-static const int cycpwrThr1_table[] = +-/* level: 0 1 2 3 4 5 6 7 8 */ +- { -6, -4, -2, 0, 2, 4, 6, 8 }; /* lvl 0-7, default 3 */ +- + /* + * register values to turn OFDM weak signal detection OFF + */ +@@ -921,7 +917,7 @@ static bool ar5008_hw_ani_control_new(st + struct ath_common *common = ath9k_hw_common(ah); + struct ath9k_channel *chan = ah->curchan; + struct ar5416AniState *aniState = &ah->ani; +- s32 value, value2; ++ s32 value; + + switch (cmd & ah->ani_function) { + case ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION:{ +@@ -1008,42 +1004,11 @@ static bool ar5008_hw_ani_control_new(st + case ATH9K_ANI_FIRSTEP_LEVEL:{ + u32 level = param; + +- if (level >= ARRAY_SIZE(firstep_table)) { +- ath_dbg(common, ANI, +- "ATH9K_ANI_FIRSTEP_LEVEL: level out of range (%u > %zu)\n", +- level, ARRAY_SIZE(firstep_table)); +- return false; +- } +- +- /* +- * make register setting relative to default +- * from INI file & cap value +- */ +- value = firstep_table[level] - +- firstep_table[ATH9K_ANI_FIRSTEP_LVL] + +- aniState->iniDef.firstep; +- if (value < ATH9K_SIG_FIRSTEP_SETTING_MIN) +- value = ATH9K_SIG_FIRSTEP_SETTING_MIN; +- if (value > ATH9K_SIG_FIRSTEP_SETTING_MAX) +- value = ATH9K_SIG_FIRSTEP_SETTING_MAX; ++ value = level * 2; + REG_RMW_FIELD(ah, AR_PHY_FIND_SIG, +- AR_PHY_FIND_SIG_FIRSTEP, +- value); +- /* +- * we need to set first step low register too +- * make register setting relative to default +- * from INI file & cap value +- */ +- value2 = firstep_table[level] - +- firstep_table[ATH9K_ANI_FIRSTEP_LVL] + +- aniState->iniDef.firstepLow; +- if (value2 < ATH9K_SIG_FIRSTEP_SETTING_MIN) +- value2 = ATH9K_SIG_FIRSTEP_SETTING_MIN; +- if (value2 > ATH9K_SIG_FIRSTEP_SETTING_MAX) +- value2 = ATH9K_SIG_FIRSTEP_SETTING_MAX; +- ++ AR_PHY_FIND_SIG_FIRSTEP, value); + REG_RMW_FIELD(ah, AR_PHY_FIND_SIG_LOW, +- AR_PHY_FIND_SIG_FIRSTEP_LOW, value2); ++ AR_PHY_FIND_SIG_FIRSTEP_LOW, value); + + if (level != aniState->firstepLevel) { + ath_dbg(common, ANI, +@@ -1060,7 +1025,7 @@ static bool ar5008_hw_ani_control_new(st + aniState->firstepLevel, + level, + ATH9K_ANI_FIRSTEP_LVL, +- value2, ++ value, + aniState->iniDef.firstepLow); + if (level > aniState->firstepLevel) + ah->stats.ast_ani_stepup++; +@@ -1073,41 +1038,13 @@ static bool ar5008_hw_ani_control_new(st + case ATH9K_ANI_SPUR_IMMUNITY_LEVEL:{ + u32 level = param; + +- if (level >= ARRAY_SIZE(cycpwrThr1_table)) { +- ath_dbg(common, ANI, +- "ATH9K_ANI_SPUR_IMMUNITY_LEVEL: level out of range (%u > %zu)\n", +- level, ARRAY_SIZE(cycpwrThr1_table)); +- return false; +- } +- /* +- * make register setting relative to default +- * from INI file & cap value +- */ +- value = cycpwrThr1_table[level] - +- cycpwrThr1_table[ATH9K_ANI_SPUR_IMMUNE_LVL] + +- aniState->iniDef.cycpwrThr1; +- if (value < ATH9K_SIG_SPUR_IMM_SETTING_MIN) +- value = ATH9K_SIG_SPUR_IMM_SETTING_MIN; +- if (value > ATH9K_SIG_SPUR_IMM_SETTING_MAX) +- value = ATH9K_SIG_SPUR_IMM_SETTING_MAX; ++ value = (level + 1) * 2; + REG_RMW_FIELD(ah, AR_PHY_TIMING5, +- AR_PHY_TIMING5_CYCPWR_THR1, +- value); ++ AR_PHY_TIMING5_CYCPWR_THR1, value); + +- /* +- * set AR_PHY_EXT_CCA for extension channel +- * make register setting relative to default +- * from INI file & cap value +- */ +- value2 = cycpwrThr1_table[level] - +- cycpwrThr1_table[ATH9K_ANI_SPUR_IMMUNE_LVL] + +- aniState->iniDef.cycpwrThr1Ext; +- if (value2 < ATH9K_SIG_SPUR_IMM_SETTING_MIN) +- value2 = ATH9K_SIG_SPUR_IMM_SETTING_MIN; +- if (value2 > ATH9K_SIG_SPUR_IMM_SETTING_MAX) +- value2 = ATH9K_SIG_SPUR_IMM_SETTING_MAX; +- REG_RMW_FIELD(ah, AR_PHY_EXT_CCA, +- AR_PHY_EXT_TIMING5_CYCPWR_THR1, value2); ++ if (IS_CHAN_HT40(ah->curchan)) ++ REG_RMW_FIELD(ah, AR_PHY_EXT_CCA, ++ AR_PHY_EXT_TIMING5_CYCPWR_THR1, value); + + if (level != aniState->spurImmunityLevel) { + ath_dbg(common, ANI, +@@ -1124,7 +1061,7 @@ static bool ar5008_hw_ani_control_new(st + aniState->spurImmunityLevel, + level, + ATH9K_ANI_SPUR_IMMUNE_LVL, +- value2, ++ value, + aniState->iniDef.cycpwrThr1Ext); + if (level > aniState->spurImmunityLevel) + ah->stats.ast_ani_spurup++; |