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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> Signed-off-by: John W. Linville <linville@tuxdriver.com>
126 lines
3.3 KiB
C
126 lines
3.3 KiB
C
/*
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* Copyright (c) 2008-2011 Atheros Communications Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef ANI_H
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#define ANI_H
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#define BEACON_RSSI(ahp) (ahp->stats.avgbrssi)
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/* units are errors per second */
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#define ATH9K_ANI_OFDM_TRIG_HIGH 3500
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#define ATH9K_ANI_OFDM_TRIG_HIGH_BELOW_INI 1000
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#define ATH9K_ANI_OFDM_TRIG_HIGH_OLD 500
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#define ATH9K_ANI_OFDM_TRIG_LOW 400
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#define ATH9K_ANI_OFDM_TRIG_LOW_ABOVE_INI 900
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#define ATH9K_ANI_OFDM_TRIG_LOW_OLD 200
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#define ATH9K_ANI_CCK_TRIG_HIGH 600
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#define ATH9K_ANI_CCK_TRIG_HIGH_OLD 200
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#define ATH9K_ANI_CCK_TRIG_LOW 300
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#define ATH9K_ANI_CCK_TRIG_LOW_OLD 100
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#define ATH9K_ANI_SPUR_IMMUNE_LVL 3
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#define ATH9K_ANI_FIRSTEP_LVL 2
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#define ATH9K_ANI_RSSI_THR_HIGH 40
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#define ATH9K_ANI_RSSI_THR_LOW 7
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#define ATH9K_ANI_PERIOD 300
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/* in ms */
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#define ATH9K_ANI_POLLINTERVAL 1000
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#define ATH9K_SIG_FIRSTEP_SETTING_MIN 0
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#define ATH9K_SIG_FIRSTEP_SETTING_MAX 20
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#define ATH9K_SIG_SPUR_IMM_SETTING_MIN 0
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#define ATH9K_SIG_SPUR_IMM_SETTING_MAX 22
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/* values here are relative to the INI */
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enum ath9k_ani_cmd {
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ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION = 0x1,
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ATH9K_ANI_FIRSTEP_LEVEL = 0x2,
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ATH9K_ANI_SPUR_IMMUNITY_LEVEL = 0x4,
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ATH9K_ANI_MRC_CCK = 0x8,
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ATH9K_ANI_ALL = 0xfff
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};
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struct ath9k_mib_stats {
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u32 ackrcv_bad;
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u32 rts_bad;
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u32 rts_good;
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u32 fcs_bad;
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u32 beacons;
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};
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/* INI default values for ANI registers */
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struct ath9k_ani_default {
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u16 m1ThreshLow;
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u16 m2ThreshLow;
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u16 m1Thresh;
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u16 m2Thresh;
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u16 m2CountThr;
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u16 m2CountThrLow;
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u16 m1ThreshLowExt;
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u16 m2ThreshLowExt;
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u16 m1ThreshExt;
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u16 m2ThreshExt;
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u16 firstep;
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u16 firstepLow;
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u16 cycpwrThr1;
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u16 cycpwrThr1Ext;
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};
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struct ar5416AniState {
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u8 noiseImmunityLevel;
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u8 ofdmNoiseImmunityLevel;
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u8 cckNoiseImmunityLevel;
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bool ofdmsTurn;
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u8 mrcCCK;
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u8 spurImmunityLevel;
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u8 firstepLevel;
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bool ofdmWeakSigDetect;
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u32 listenTime;
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u32 ofdmPhyErrCount;
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u32 cckPhyErrCount;
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struct ath9k_ani_default iniDef;
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};
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struct ar5416Stats {
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u32 ast_ani_spurup;
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u32 ast_ani_spurdown;
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u32 ast_ani_ofdmon;
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u32 ast_ani_ofdmoff;
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u32 ast_ani_cckhigh;
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u32 ast_ani_ccklow;
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u32 ast_ani_stepup;
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u32 ast_ani_stepdown;
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u32 ast_ani_ofdmerrs;
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u32 ast_ani_cckerrs;
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u32 ast_ani_reset;
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u32 ast_ani_lneg_or_lzero;
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u32 avgbrssi;
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struct ath9k_mib_stats ast_mibstats;
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};
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#define ah_mibStats stats.ast_mibstats
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void ath9k_enable_mib_counters(struct ath_hw *ah);
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void ath9k_hw_disable_mib_counters(struct ath_hw *ah);
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void ath9k_hw_ani_init(struct ath_hw *ah);
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#endif /* ANI_H */
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