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ath9k: further improvements to noise immunity handling on older chips

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Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 39879
master
Felix Fietkau 11 years ago
parent 97ea9e3c2a
commit c112b16dd8
2 changed files with 170 additions and 2 deletions
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  1. 168
      package/kernel/mac80211/patches/300-pending_work.patch
  2. 4
      package/kernel/mac80211/patches/550-ath9k_entropy_from_adc.patch

168
package/kernel/mac80211/patches/300-pending_work.patch
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@ -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++;

4
package/kernel/mac80211/patches/550-ath9k_entropy_from_adc.patch
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@ -124,7 +124,7 @@
long_cal_interval = ATH_LONG_CALINTERVAL_INT;
--- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
@@ -1296,9 +1296,30 @@ static void ar5008_hw_set_radar_conf(str
@@ -1233,9 +1233,30 @@ static void ar5008_hw_set_radar_conf(str
conf->radar_inband = 8;
}
@ -155,7 +155,7 @@
static const u32 ar5416_cca_regs[6] = {
AR_PHY_CCA,
AR_PHY_CH1_CCA,
@@ -1313,6 +1334,8 @@ int ar5008_hw_attach_phy_ops(struct ath_
@@ -1250,6 +1271,8 @@ int ar5008_hw_attach_phy_ops(struct ath_
if (ret)
return ret;

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