Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1 | /* |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 2 | * Copyright (c) 2008-2010 Atheros Communications Inc. |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 3 | * |
| 4 | * Permission to use, copy, modify, and/or distribute this software for any |
| 5 | * purpose with or without fee is hereby granted, provided that the above |
| 6 | * copyright notice and this permission notice appear in all copies. |
| 7 | * |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 15 | */ |
| 16 | |
Nikitas Angelinas | bbce80e | 2010-09-08 22:25:42 +0100 | [diff] [blame^] | 17 | #include <linux/kernel.h> |
Luis R. Rodriguez | cfe8cba | 2009-09-13 23:39:31 -0700 | [diff] [blame] | 18 | #include "hw.h" |
Felix Fietkau | c16fcb4 | 2010-04-15 17:38:39 -0400 | [diff] [blame] | 19 | #include "hw-ops.h" |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 20 | |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 21 | struct ani_ofdm_level_entry { |
| 22 | int spur_immunity_level; |
| 23 | int fir_step_level; |
| 24 | int ofdm_weak_signal_on; |
| 25 | }; |
| 26 | |
| 27 | /* values here are relative to the INI */ |
| 28 | |
| 29 | /* |
| 30 | * Legend: |
| 31 | * |
| 32 | * SI: Spur immunity |
| 33 | * FS: FIR Step |
| 34 | * WS: OFDM / CCK Weak Signal detection |
| 35 | * MRC-CCK: Maximal Ratio Combining for CCK |
| 36 | */ |
| 37 | |
| 38 | static const struct ani_ofdm_level_entry ofdm_level_table[] = { |
| 39 | /* SI FS WS */ |
| 40 | { 0, 0, 1 }, /* lvl 0 */ |
| 41 | { 1, 1, 1 }, /* lvl 1 */ |
| 42 | { 2, 2, 1 }, /* lvl 2 */ |
| 43 | { 3, 2, 1 }, /* lvl 3 (default) */ |
| 44 | { 4, 3, 1 }, /* lvl 4 */ |
| 45 | { 5, 4, 1 }, /* lvl 5 */ |
| 46 | { 6, 5, 1 }, /* lvl 6 */ |
| 47 | { 7, 6, 1 }, /* lvl 7 */ |
| 48 | { 7, 7, 1 }, /* lvl 8 */ |
| 49 | { 7, 8, 0 } /* lvl 9 */ |
| 50 | }; |
| 51 | #define ATH9K_ANI_OFDM_NUM_LEVEL \ |
Nikitas Angelinas | bbce80e | 2010-09-08 22:25:42 +0100 | [diff] [blame^] | 52 | ARRAY_SIZE(ofdm_level_table) |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 53 | #define ATH9K_ANI_OFDM_MAX_LEVEL \ |
| 54 | (ATH9K_ANI_OFDM_NUM_LEVEL-1) |
| 55 | #define ATH9K_ANI_OFDM_DEF_LEVEL \ |
| 56 | 3 /* default level - matches the INI settings */ |
| 57 | |
| 58 | /* |
| 59 | * MRC (Maximal Ratio Combining) has always been used with multi-antenna ofdm. |
| 60 | * With OFDM for single stream you just add up all antenna inputs, you're |
| 61 | * only interested in what you get after FFT. Signal aligment is also not |
| 62 | * required for OFDM because any phase difference adds up in the frequency |
| 63 | * domain. |
| 64 | * |
| 65 | * MRC requires extra work for use with CCK. You need to align the antenna |
| 66 | * signals from the different antenna before you can add the signals together. |
| 67 | * You need aligment of signals as CCK is in time domain, so addition can cancel |
| 68 | * your signal completely if phase is 180 degrees (think of adding sine waves). |
| 69 | * You also need to remove noise before the addition and this is where ANI |
| 70 | * MRC CCK comes into play. One of the antenna inputs may be stronger but |
| 71 | * lower SNR, so just adding after alignment can be dangerous. |
| 72 | * |
| 73 | * Regardless of alignment in time, the antenna signals add constructively after |
| 74 | * FFT and improve your reception. For more information: |
| 75 | * |
| 76 | * http://en.wikipedia.org/wiki/Maximal-ratio_combining |
| 77 | */ |
| 78 | |
| 79 | struct ani_cck_level_entry { |
| 80 | int fir_step_level; |
| 81 | int mrc_cck_on; |
| 82 | }; |
| 83 | |
| 84 | static const struct ani_cck_level_entry cck_level_table[] = { |
| 85 | /* FS MRC-CCK */ |
| 86 | { 0, 1 }, /* lvl 0 */ |
| 87 | { 1, 1 }, /* lvl 1 */ |
| 88 | { 2, 1 }, /* lvl 2 (default) */ |
| 89 | { 3, 1 }, /* lvl 3 */ |
| 90 | { 4, 0 }, /* lvl 4 */ |
| 91 | { 5, 0 }, /* lvl 5 */ |
| 92 | { 6, 0 }, /* lvl 6 */ |
| 93 | { 7, 0 }, /* lvl 7 (only for high rssi) */ |
| 94 | { 8, 0 } /* lvl 8 (only for high rssi) */ |
| 95 | }; |
| 96 | |
| 97 | #define ATH9K_ANI_CCK_NUM_LEVEL \ |
Nikitas Angelinas | bbce80e | 2010-09-08 22:25:42 +0100 | [diff] [blame^] | 98 | ARRAY_SIZE(cck_level_table) |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 99 | #define ATH9K_ANI_CCK_MAX_LEVEL \ |
| 100 | (ATH9K_ANI_CCK_NUM_LEVEL-1) |
| 101 | #define ATH9K_ANI_CCK_MAX_LEVEL_LOW_RSSI \ |
| 102 | (ATH9K_ANI_CCK_NUM_LEVEL-3) |
| 103 | #define ATH9K_ANI_CCK_DEF_LEVEL \ |
| 104 | 2 /* default level - matches the INI settings */ |
| 105 | |
Luis R. Rodriguez | ac0bb76 | 2010-06-12 00:33:42 -0400 | [diff] [blame] | 106 | /* Private to ani.c */ |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 107 | static void ath9k_hw_ani_lower_immunity(struct ath_hw *ah) |
Luis R. Rodriguez | ac0bb76 | 2010-06-12 00:33:42 -0400 | [diff] [blame] | 108 | { |
| 109 | ath9k_hw_private_ops(ah)->ani_lower_immunity(ah); |
| 110 | } |
| 111 | |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 112 | int ath9k_hw_get_ani_channel_idx(struct ath_hw *ah, |
| 113 | struct ath9k_channel *chan) |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 114 | { |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 115 | int i; |
| 116 | |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 117 | for (i = 0; i < ARRAY_SIZE(ah->ani); i++) { |
| 118 | if (ah->ani[i].c && |
| 119 | ah->ani[i].c->channel == chan->channel) |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 120 | return i; |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 121 | if (ah->ani[i].c == NULL) { |
| 122 | ah->ani[i].c = chan; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 123 | return i; |
| 124 | } |
| 125 | } |
| 126 | |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 127 | ath_print(ath9k_hw_common(ah), ATH_DBG_ANI, |
| 128 | "No more channel states left. Using channel 0\n"); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 129 | |
| 130 | return 0; |
| 131 | } |
| 132 | |
Sujith | cbe61d8 | 2009-02-09 13:27:12 +0530 | [diff] [blame] | 133 | static void ath9k_hw_update_mibstats(struct ath_hw *ah, |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 134 | struct ath9k_mib_stats *stats) |
| 135 | { |
| 136 | stats->ackrcv_bad += REG_READ(ah, AR_ACK_FAIL); |
| 137 | stats->rts_bad += REG_READ(ah, AR_RTS_FAIL); |
| 138 | stats->fcs_bad += REG_READ(ah, AR_FCS_FAIL); |
| 139 | stats->rts_good += REG_READ(ah, AR_RTS_OK); |
| 140 | stats->beacons += REG_READ(ah, AR_BEACON_CNT); |
| 141 | } |
| 142 | |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 143 | static void ath9k_ani_restart_old(struct ath_hw *ah) |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 144 | { |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 145 | struct ar5416AniState *aniState; |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 146 | struct ath_common *common = ath9k_hw_common(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 147 | |
| 148 | if (!DO_ANI(ah)) |
| 149 | return; |
| 150 | |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 151 | aniState = ah->curani; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 152 | aniState->listenTime = 0; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 153 | |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 154 | if (aniState->ofdmTrigHigh > AR_PHY_COUNTMAX) { |
| 155 | aniState->ofdmPhyErrBase = 0; |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 156 | ath_print(common, ATH_DBG_ANI, |
| 157 | "OFDM Trigger is too high for hw counters\n"); |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 158 | } else { |
| 159 | aniState->ofdmPhyErrBase = |
| 160 | AR_PHY_COUNTMAX - aniState->ofdmTrigHigh; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 161 | } |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 162 | if (aniState->cckTrigHigh > AR_PHY_COUNTMAX) { |
| 163 | aniState->cckPhyErrBase = 0; |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 164 | ath_print(common, ATH_DBG_ANI, |
| 165 | "CCK Trigger is too high for hw counters\n"); |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 166 | } else { |
| 167 | aniState->cckPhyErrBase = |
| 168 | AR_PHY_COUNTMAX - aniState->cckTrigHigh; |
| 169 | } |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 170 | ath_print(common, ATH_DBG_ANI, |
| 171 | "Writing ofdmbase=%u cckbase=%u\n", |
| 172 | aniState->ofdmPhyErrBase, |
| 173 | aniState->cckPhyErrBase); |
Sujith | 7d0d0df | 2010-04-16 11:53:57 +0530 | [diff] [blame] | 174 | |
| 175 | ENABLE_REGWRITE_BUFFER(ah); |
| 176 | |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 177 | REG_WRITE(ah, AR_PHY_ERR_1, aniState->ofdmPhyErrBase); |
| 178 | REG_WRITE(ah, AR_PHY_ERR_2, aniState->cckPhyErrBase); |
| 179 | REG_WRITE(ah, AR_PHY_ERR_MASK_1, AR_PHY_ERR_OFDM_TIMING); |
| 180 | REG_WRITE(ah, AR_PHY_ERR_MASK_2, AR_PHY_ERR_CCK_TIMING); |
| 181 | |
Sujith | 7d0d0df | 2010-04-16 11:53:57 +0530 | [diff] [blame] | 182 | REGWRITE_BUFFER_FLUSH(ah); |
| 183 | DISABLE_REGWRITE_BUFFER(ah); |
| 184 | |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 185 | ath9k_hw_update_mibstats(ah, &ah->ah_mibStats); |
| 186 | |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 187 | aniState->ofdmPhyErrCount = 0; |
| 188 | aniState->cckPhyErrCount = 0; |
| 189 | } |
| 190 | |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 191 | static void ath9k_ani_restart_new(struct ath_hw *ah) |
| 192 | { |
| 193 | struct ar5416AniState *aniState; |
| 194 | struct ath_common *common = ath9k_hw_common(ah); |
| 195 | |
| 196 | if (!DO_ANI(ah)) |
| 197 | return; |
| 198 | |
| 199 | aniState = ah->curani; |
| 200 | aniState->listenTime = 0; |
| 201 | |
| 202 | aniState->ofdmPhyErrBase = 0; |
| 203 | aniState->cckPhyErrBase = 0; |
| 204 | |
| 205 | ath_print(common, ATH_DBG_ANI, |
| 206 | "Writing ofdmbase=%08x cckbase=%08x\n", |
| 207 | aniState->ofdmPhyErrBase, |
| 208 | aniState->cckPhyErrBase); |
| 209 | |
| 210 | ENABLE_REGWRITE_BUFFER(ah); |
| 211 | |
| 212 | REG_WRITE(ah, AR_PHY_ERR_1, aniState->ofdmPhyErrBase); |
| 213 | REG_WRITE(ah, AR_PHY_ERR_2, aniState->cckPhyErrBase); |
| 214 | REG_WRITE(ah, AR_PHY_ERR_MASK_1, AR_PHY_ERR_OFDM_TIMING); |
| 215 | REG_WRITE(ah, AR_PHY_ERR_MASK_2, AR_PHY_ERR_CCK_TIMING); |
| 216 | |
| 217 | REGWRITE_BUFFER_FLUSH(ah); |
| 218 | DISABLE_REGWRITE_BUFFER(ah); |
| 219 | |
| 220 | ath9k_hw_update_mibstats(ah, &ah->ah_mibStats); |
| 221 | |
| 222 | aniState->ofdmPhyErrCount = 0; |
| 223 | aniState->cckPhyErrCount = 0; |
| 224 | } |
| 225 | |
| 226 | static void ath9k_hw_ani_ofdm_err_trigger_old(struct ath_hw *ah) |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 227 | { |
Luis R. Rodriguez | b002a4a | 2009-09-13 00:03:27 -0700 | [diff] [blame] | 228 | struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 229 | struct ar5416AniState *aniState; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 230 | int32_t rssi; |
| 231 | |
| 232 | if (!DO_ANI(ah)) |
| 233 | return; |
| 234 | |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 235 | aniState = ah->curani; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 236 | |
| 237 | if (aniState->noiseImmunityLevel < HAL_NOISE_IMMUNE_MAX) { |
| 238 | if (ath9k_hw_ani_control(ah, ATH9K_ANI_NOISE_IMMUNITY_LEVEL, |
| 239 | aniState->noiseImmunityLevel + 1)) { |
| 240 | return; |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | if (aniState->spurImmunityLevel < HAL_SPUR_IMMUNE_MAX) { |
| 245 | if (ath9k_hw_ani_control(ah, ATH9K_ANI_SPUR_IMMUNITY_LEVEL, |
| 246 | aniState->spurImmunityLevel + 1)) { |
| 247 | return; |
| 248 | } |
| 249 | } |
| 250 | |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 251 | if (ah->opmode == NL80211_IFTYPE_AP) { |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 252 | if (aniState->firstepLevel < HAL_FIRST_STEP_MAX) { |
| 253 | ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL, |
| 254 | aniState->firstepLevel + 1); |
| 255 | } |
| 256 | return; |
| 257 | } |
Sujith | cbe61d8 | 2009-02-09 13:27:12 +0530 | [diff] [blame] | 258 | rssi = BEACON_RSSI(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 259 | if (rssi > aniState->rssiThrHigh) { |
| 260 | if (!aniState->ofdmWeakSigDetectOff) { |
| 261 | if (ath9k_hw_ani_control(ah, |
| 262 | ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION, |
| 263 | false)) { |
| 264 | ath9k_hw_ani_control(ah, |
| 265 | ATH9K_ANI_SPUR_IMMUNITY_LEVEL, 0); |
| 266 | return; |
| 267 | } |
| 268 | } |
| 269 | if (aniState->firstepLevel < HAL_FIRST_STEP_MAX) { |
| 270 | ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL, |
| 271 | aniState->firstepLevel + 1); |
| 272 | return; |
| 273 | } |
| 274 | } else if (rssi > aniState->rssiThrLow) { |
| 275 | if (aniState->ofdmWeakSigDetectOff) |
| 276 | ath9k_hw_ani_control(ah, |
| 277 | ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION, |
| 278 | true); |
| 279 | if (aniState->firstepLevel < HAL_FIRST_STEP_MAX) |
| 280 | ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL, |
| 281 | aniState->firstepLevel + 1); |
| 282 | return; |
| 283 | } else { |
Sujith | d37b7da | 2009-09-11 08:30:03 +0530 | [diff] [blame] | 284 | if ((conf->channel->band == IEEE80211_BAND_2GHZ) && |
| 285 | !conf_is_ht(conf)) { |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 286 | if (!aniState->ofdmWeakSigDetectOff) |
| 287 | ath9k_hw_ani_control(ah, |
| 288 | ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION, |
| 289 | false); |
| 290 | if (aniState->firstepLevel > 0) |
| 291 | ath9k_hw_ani_control(ah, |
| 292 | ATH9K_ANI_FIRSTEP_LEVEL, 0); |
| 293 | return; |
| 294 | } |
| 295 | } |
| 296 | } |
| 297 | |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 298 | static void ath9k_hw_ani_cck_err_trigger_old(struct ath_hw *ah) |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 299 | { |
Luis R. Rodriguez | b002a4a | 2009-09-13 00:03:27 -0700 | [diff] [blame] | 300 | struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 301 | struct ar5416AniState *aniState; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 302 | int32_t rssi; |
| 303 | |
| 304 | if (!DO_ANI(ah)) |
| 305 | return; |
| 306 | |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 307 | aniState = ah->curani; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 308 | if (aniState->noiseImmunityLevel < HAL_NOISE_IMMUNE_MAX) { |
| 309 | if (ath9k_hw_ani_control(ah, ATH9K_ANI_NOISE_IMMUNITY_LEVEL, |
| 310 | aniState->noiseImmunityLevel + 1)) { |
| 311 | return; |
| 312 | } |
| 313 | } |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 314 | if (ah->opmode == NL80211_IFTYPE_AP) { |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 315 | if (aniState->firstepLevel < HAL_FIRST_STEP_MAX) { |
| 316 | ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL, |
| 317 | aniState->firstepLevel + 1); |
| 318 | } |
| 319 | return; |
| 320 | } |
Sujith | cbe61d8 | 2009-02-09 13:27:12 +0530 | [diff] [blame] | 321 | rssi = BEACON_RSSI(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 322 | if (rssi > aniState->rssiThrLow) { |
| 323 | if (aniState->firstepLevel < HAL_FIRST_STEP_MAX) |
| 324 | ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL, |
| 325 | aniState->firstepLevel + 1); |
| 326 | } else { |
Sujith | d37b7da | 2009-09-11 08:30:03 +0530 | [diff] [blame] | 327 | if ((conf->channel->band == IEEE80211_BAND_2GHZ) && |
| 328 | !conf_is_ht(conf)) { |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 329 | if (aniState->firstepLevel > 0) |
| 330 | ath9k_hw_ani_control(ah, |
| 331 | ATH9K_ANI_FIRSTEP_LEVEL, 0); |
| 332 | } |
| 333 | } |
| 334 | } |
| 335 | |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 336 | /* Adjust the OFDM Noise Immunity Level */ |
| 337 | static void ath9k_hw_set_ofdm_nil(struct ath_hw *ah, u8 immunityLevel) |
| 338 | { |
| 339 | struct ar5416AniState *aniState = ah->curani; |
| 340 | struct ath_common *common = ath9k_hw_common(ah); |
| 341 | const struct ani_ofdm_level_entry *entry_ofdm; |
| 342 | const struct ani_cck_level_entry *entry_cck; |
| 343 | |
| 344 | aniState->noiseFloor = BEACON_RSSI(ah); |
| 345 | |
| 346 | ath_print(common, ATH_DBG_ANI, |
| 347 | "**** ofdmlevel %d=>%d, rssi=%d[lo=%d hi=%d]\n", |
| 348 | aniState->ofdmNoiseImmunityLevel, |
| 349 | immunityLevel, aniState->noiseFloor, |
| 350 | aniState->rssiThrLow, aniState->rssiThrHigh); |
| 351 | |
| 352 | aniState->ofdmNoiseImmunityLevel = immunityLevel; |
| 353 | |
| 354 | entry_ofdm = &ofdm_level_table[aniState->ofdmNoiseImmunityLevel]; |
| 355 | entry_cck = &cck_level_table[aniState->cckNoiseImmunityLevel]; |
| 356 | |
| 357 | if (aniState->spurImmunityLevel != entry_ofdm->spur_immunity_level) |
| 358 | ath9k_hw_ani_control(ah, |
| 359 | ATH9K_ANI_SPUR_IMMUNITY_LEVEL, |
| 360 | entry_ofdm->spur_immunity_level); |
| 361 | |
| 362 | if (aniState->firstepLevel != entry_ofdm->fir_step_level && |
| 363 | entry_ofdm->fir_step_level >= entry_cck->fir_step_level) |
| 364 | ath9k_hw_ani_control(ah, |
| 365 | ATH9K_ANI_FIRSTEP_LEVEL, |
| 366 | entry_ofdm->fir_step_level); |
| 367 | |
| 368 | if ((ah->opmode != NL80211_IFTYPE_STATION && |
| 369 | ah->opmode != NL80211_IFTYPE_ADHOC) || |
| 370 | aniState->noiseFloor <= aniState->rssiThrHigh) { |
| 371 | if (aniState->ofdmWeakSigDetectOff) |
| 372 | /* force on ofdm weak sig detect */ |
| 373 | ath9k_hw_ani_control(ah, |
| 374 | ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION, |
| 375 | true); |
| 376 | else if (aniState->ofdmWeakSigDetectOff == |
| 377 | entry_ofdm->ofdm_weak_signal_on) |
| 378 | ath9k_hw_ani_control(ah, |
| 379 | ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION, |
| 380 | entry_ofdm->ofdm_weak_signal_on); |
| 381 | } |
| 382 | } |
| 383 | |
| 384 | static void ath9k_hw_ani_ofdm_err_trigger_new(struct ath_hw *ah) |
| 385 | { |
| 386 | struct ar5416AniState *aniState; |
| 387 | |
| 388 | if (!DO_ANI(ah)) |
| 389 | return; |
| 390 | |
| 391 | aniState = ah->curani; |
| 392 | |
| 393 | if (aniState->ofdmNoiseImmunityLevel < ATH9K_ANI_OFDM_MAX_LEVEL) |
| 394 | ath9k_hw_set_ofdm_nil(ah, aniState->ofdmNoiseImmunityLevel + 1); |
| 395 | } |
| 396 | |
| 397 | /* |
| 398 | * Set the ANI settings to match an CCK level. |
| 399 | */ |
| 400 | static void ath9k_hw_set_cck_nil(struct ath_hw *ah, u_int8_t immunityLevel) |
| 401 | { |
| 402 | struct ar5416AniState *aniState = ah->curani; |
| 403 | struct ath_common *common = ath9k_hw_common(ah); |
| 404 | const struct ani_ofdm_level_entry *entry_ofdm; |
| 405 | const struct ani_cck_level_entry *entry_cck; |
| 406 | |
| 407 | aniState->noiseFloor = BEACON_RSSI(ah); |
| 408 | ath_print(common, ATH_DBG_ANI, |
| 409 | "**** ccklevel %d=>%d, rssi=%d[lo=%d hi=%d]\n", |
| 410 | aniState->cckNoiseImmunityLevel, immunityLevel, |
| 411 | aniState->noiseFloor, aniState->rssiThrLow, |
| 412 | aniState->rssiThrHigh); |
| 413 | |
| 414 | if ((ah->opmode == NL80211_IFTYPE_STATION || |
| 415 | ah->opmode == NL80211_IFTYPE_ADHOC) && |
| 416 | aniState->noiseFloor <= aniState->rssiThrLow && |
| 417 | immunityLevel > ATH9K_ANI_CCK_MAX_LEVEL_LOW_RSSI) |
| 418 | immunityLevel = ATH9K_ANI_CCK_MAX_LEVEL_LOW_RSSI; |
| 419 | |
| 420 | aniState->cckNoiseImmunityLevel = immunityLevel; |
| 421 | |
| 422 | entry_ofdm = &ofdm_level_table[aniState->ofdmNoiseImmunityLevel]; |
| 423 | entry_cck = &cck_level_table[aniState->cckNoiseImmunityLevel]; |
| 424 | |
| 425 | if (aniState->firstepLevel != entry_cck->fir_step_level && |
| 426 | entry_cck->fir_step_level >= entry_ofdm->fir_step_level) |
| 427 | ath9k_hw_ani_control(ah, |
| 428 | ATH9K_ANI_FIRSTEP_LEVEL, |
| 429 | entry_cck->fir_step_level); |
| 430 | |
| 431 | /* Skip MRC CCK for pre AR9003 families */ |
| 432 | if (!AR_SREV_9300_20_OR_LATER(ah)) |
| 433 | return; |
| 434 | |
| 435 | if (aniState->mrcCCKOff == entry_cck->mrc_cck_on) |
| 436 | ath9k_hw_ani_control(ah, |
| 437 | ATH9K_ANI_MRC_CCK, |
| 438 | entry_cck->mrc_cck_on); |
| 439 | } |
| 440 | |
| 441 | static void ath9k_hw_ani_cck_err_trigger_new(struct ath_hw *ah) |
| 442 | { |
| 443 | struct ar5416AniState *aniState; |
| 444 | |
| 445 | if (!DO_ANI(ah)) |
| 446 | return; |
| 447 | |
| 448 | aniState = ah->curani; |
| 449 | |
| 450 | if (aniState->cckNoiseImmunityLevel < ATH9K_ANI_CCK_MAX_LEVEL) |
| 451 | ath9k_hw_set_cck_nil(ah, aniState->cckNoiseImmunityLevel + 1); |
| 452 | } |
| 453 | |
Luis R. Rodriguez | ac0bb76 | 2010-06-12 00:33:42 -0400 | [diff] [blame] | 454 | static void ath9k_hw_ani_lower_immunity_old(struct ath_hw *ah) |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 455 | { |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 456 | struct ar5416AniState *aniState; |
| 457 | int32_t rssi; |
| 458 | |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 459 | aniState = ah->curani; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 460 | |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 461 | if (ah->opmode == NL80211_IFTYPE_AP) { |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 462 | if (aniState->firstepLevel > 0) { |
| 463 | if (ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL, |
| 464 | aniState->firstepLevel - 1)) |
| 465 | return; |
| 466 | } |
| 467 | } else { |
Sujith | cbe61d8 | 2009-02-09 13:27:12 +0530 | [diff] [blame] | 468 | rssi = BEACON_RSSI(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 469 | if (rssi > aniState->rssiThrHigh) { |
| 470 | /* XXX: Handle me */ |
| 471 | } else if (rssi > aniState->rssiThrLow) { |
| 472 | if (aniState->ofdmWeakSigDetectOff) { |
| 473 | if (ath9k_hw_ani_control(ah, |
| 474 | ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION, |
| 475 | true) == true) |
| 476 | return; |
| 477 | } |
| 478 | if (aniState->firstepLevel > 0) { |
| 479 | if (ath9k_hw_ani_control(ah, |
| 480 | ATH9K_ANI_FIRSTEP_LEVEL, |
| 481 | aniState->firstepLevel - 1) == true) |
| 482 | return; |
| 483 | } |
| 484 | } else { |
| 485 | if (aniState->firstepLevel > 0) { |
| 486 | if (ath9k_hw_ani_control(ah, |
| 487 | ATH9K_ANI_FIRSTEP_LEVEL, |
| 488 | aniState->firstepLevel - 1) == true) |
| 489 | return; |
| 490 | } |
| 491 | } |
| 492 | } |
| 493 | |
| 494 | if (aniState->spurImmunityLevel > 0) { |
| 495 | if (ath9k_hw_ani_control(ah, ATH9K_ANI_SPUR_IMMUNITY_LEVEL, |
| 496 | aniState->spurImmunityLevel - 1)) |
| 497 | return; |
| 498 | } |
| 499 | |
| 500 | if (aniState->noiseImmunityLevel > 0) { |
| 501 | ath9k_hw_ani_control(ah, ATH9K_ANI_NOISE_IMMUNITY_LEVEL, |
| 502 | aniState->noiseImmunityLevel - 1); |
| 503 | return; |
| 504 | } |
| 505 | } |
| 506 | |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 507 | /* |
| 508 | * only lower either OFDM or CCK errors per turn |
| 509 | * we lower the other one next time |
| 510 | */ |
| 511 | static void ath9k_hw_ani_lower_immunity_new(struct ath_hw *ah) |
| 512 | { |
| 513 | struct ar5416AniState *aniState; |
| 514 | |
| 515 | aniState = ah->curani; |
| 516 | |
| 517 | /* lower OFDM noise immunity */ |
| 518 | if (aniState->ofdmNoiseImmunityLevel > 0 && |
| 519 | (aniState->ofdmsTurn || aniState->cckNoiseImmunityLevel == 0)) { |
| 520 | ath9k_hw_set_ofdm_nil(ah, aniState->ofdmNoiseImmunityLevel - 1); |
| 521 | return; |
| 522 | } |
| 523 | |
| 524 | /* lower CCK noise immunity */ |
| 525 | if (aniState->cckNoiseImmunityLevel > 0) |
| 526 | ath9k_hw_set_cck_nil(ah, aniState->cckNoiseImmunityLevel - 1); |
| 527 | } |
| 528 | |
Luis R. Rodriguez | 37e5bf6 | 2010-06-12 00:33:40 -0400 | [diff] [blame] | 529 | static u8 ath9k_hw_chan_2_clockrate_mhz(struct ath_hw *ah) |
| 530 | { |
| 531 | struct ath9k_channel *chan = ah->curchan; |
| 532 | struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf; |
| 533 | u8 clockrate; /* in MHz */ |
| 534 | |
| 535 | if (!ah->curchan) /* should really check for CCK instead */ |
| 536 | clockrate = ATH9K_CLOCK_RATE_CCK; |
| 537 | else if (conf->channel->band == IEEE80211_BAND_2GHZ) |
| 538 | clockrate = ATH9K_CLOCK_RATE_2GHZ_OFDM; |
| 539 | else if (IS_CHAN_A_FAST_CLOCK(ah, chan)) |
| 540 | clockrate = ATH9K_CLOCK_FAST_RATE_5GHZ_OFDM; |
| 541 | else |
| 542 | clockrate = ATH9K_CLOCK_RATE_5GHZ_OFDM; |
| 543 | |
| 544 | if (conf_is_ht40(conf)) |
| 545 | return clockrate * 2; |
| 546 | |
| 547 | return clockrate * 2; |
| 548 | } |
| 549 | |
Sujith | cbe61d8 | 2009-02-09 13:27:12 +0530 | [diff] [blame] | 550 | static int32_t ath9k_hw_ani_get_listen_time(struct ath_hw *ah) |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 551 | { |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 552 | struct ar5416AniState *aniState; |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 553 | struct ath_common *common = ath9k_hw_common(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 554 | u32 txFrameCount, rxFrameCount, cycleCount; |
| 555 | int32_t listenTime; |
| 556 | |
| 557 | txFrameCount = REG_READ(ah, AR_TFCNT); |
| 558 | rxFrameCount = REG_READ(ah, AR_RFCNT); |
| 559 | cycleCount = REG_READ(ah, AR_CCCNT); |
| 560 | |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 561 | aniState = ah->curani; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 562 | if (aniState->cycleCount == 0 || aniState->cycleCount > cycleCount) { |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 563 | listenTime = 0; |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 564 | ah->stats.ast_ani_lzero++; |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 565 | ath_print(common, ATH_DBG_ANI, |
| 566 | "1st call: aniState->cycleCount=%d\n", |
| 567 | aniState->cycleCount); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 568 | } else { |
| 569 | int32_t ccdelta = cycleCount - aniState->cycleCount; |
| 570 | int32_t rfdelta = rxFrameCount - aniState->rxFrameCount; |
| 571 | int32_t tfdelta = txFrameCount - aniState->txFrameCount; |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 572 | int32_t clock_rate; |
Luis R. Rodriguez | 37e5bf6 | 2010-06-12 00:33:40 -0400 | [diff] [blame] | 573 | |
| 574 | /* |
| 575 | * convert HW counter values to ms using mode |
| 576 | * specifix clock rate |
| 577 | */ |
| 578 | clock_rate = ath9k_hw_chan_2_clockrate_mhz(ah) * 1000;; |
| 579 | |
| 580 | listenTime = (ccdelta - rfdelta - tfdelta) / clock_rate; |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 581 | |
| 582 | ath_print(common, ATH_DBG_ANI, |
| 583 | "cyclecount=%d, rfcount=%d, " |
| 584 | "tfcount=%d, listenTime=%d CLOCK_RATE=%d\n", |
| 585 | ccdelta, rfdelta, tfdelta, listenTime, clock_rate); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 586 | } |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 587 | |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 588 | aniState->cycleCount = cycleCount; |
| 589 | aniState->txFrameCount = txFrameCount; |
| 590 | aniState->rxFrameCount = rxFrameCount; |
| 591 | |
| 592 | return listenTime; |
| 593 | } |
| 594 | |
Luis R. Rodriguez | 40346b6 | 2010-06-12 00:33:44 -0400 | [diff] [blame] | 595 | static void ath9k_ani_reset_old(struct ath_hw *ah, bool is_scanning) |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 596 | { |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 597 | struct ar5416AniState *aniState; |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 598 | struct ath9k_channel *chan = ah->curchan; |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 599 | struct ath_common *common = ath9k_hw_common(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 600 | int index; |
| 601 | |
| 602 | if (!DO_ANI(ah)) |
| 603 | return; |
| 604 | |
| 605 | index = ath9k_hw_get_ani_channel_idx(ah, chan); |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 606 | aniState = &ah->ani[index]; |
| 607 | ah->curani = aniState; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 608 | |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 609 | if (DO_ANI(ah) && ah->opmode != NL80211_IFTYPE_STATION |
| 610 | && ah->opmode != NL80211_IFTYPE_ADHOC) { |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 611 | ath_print(common, ATH_DBG_ANI, |
| 612 | "Reset ANI state opmode %u\n", ah->opmode); |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 613 | ah->stats.ast_ani_reset++; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 614 | |
Luis R. Rodriguez | c66284f | 2009-07-16 10:17:35 -0700 | [diff] [blame] | 615 | if (ah->opmode == NL80211_IFTYPE_AP) { |
| 616 | /* |
| 617 | * ath9k_hw_ani_control() will only process items set on |
| 618 | * ah->ani_function |
| 619 | */ |
| 620 | if (IS_CHAN_2GHZ(chan)) |
| 621 | ah->ani_function = (ATH9K_ANI_SPUR_IMMUNITY_LEVEL | |
| 622 | ATH9K_ANI_FIRSTEP_LEVEL); |
| 623 | else |
| 624 | ah->ani_function = 0; |
| 625 | } |
| 626 | |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 627 | ath9k_hw_ani_control(ah, ATH9K_ANI_NOISE_IMMUNITY_LEVEL, 0); |
| 628 | ath9k_hw_ani_control(ah, ATH9K_ANI_SPUR_IMMUNITY_LEVEL, 0); |
| 629 | ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL, 0); |
| 630 | ath9k_hw_ani_control(ah, ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION, |
| 631 | !ATH9K_ANI_USE_OFDM_WEAK_SIG); |
| 632 | ath9k_hw_ani_control(ah, ATH9K_ANI_CCK_WEAK_SIGNAL_THR, |
| 633 | ATH9K_ANI_CCK_WEAK_SIG_THR); |
| 634 | |
| 635 | ath9k_hw_setrxfilter(ah, ath9k_hw_getrxfilter(ah) | |
| 636 | ATH9K_RX_FILTER_PHYERR); |
| 637 | |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 638 | if (ah->opmode == NL80211_IFTYPE_AP) { |
| 639 | ah->curani->ofdmTrigHigh = |
| 640 | ah->config.ofdm_trig_high; |
| 641 | ah->curani->ofdmTrigLow = |
| 642 | ah->config.ofdm_trig_low; |
| 643 | ah->curani->cckTrigHigh = |
| 644 | ah->config.cck_trig_high; |
| 645 | ah->curani->cckTrigLow = |
| 646 | ah->config.cck_trig_low; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 647 | } |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 648 | ath9k_ani_restart_old(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 649 | return; |
| 650 | } |
| 651 | |
| 652 | if (aniState->noiseImmunityLevel != 0) |
| 653 | ath9k_hw_ani_control(ah, ATH9K_ANI_NOISE_IMMUNITY_LEVEL, |
| 654 | aniState->noiseImmunityLevel); |
| 655 | if (aniState->spurImmunityLevel != 0) |
| 656 | ath9k_hw_ani_control(ah, ATH9K_ANI_SPUR_IMMUNITY_LEVEL, |
| 657 | aniState->spurImmunityLevel); |
| 658 | if (aniState->ofdmWeakSigDetectOff) |
| 659 | ath9k_hw_ani_control(ah, ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION, |
| 660 | !aniState->ofdmWeakSigDetectOff); |
| 661 | if (aniState->cckWeakSigThreshold) |
| 662 | ath9k_hw_ani_control(ah, ATH9K_ANI_CCK_WEAK_SIGNAL_THR, |
| 663 | aniState->cckWeakSigThreshold); |
| 664 | if (aniState->firstepLevel != 0) |
| 665 | ath9k_hw_ani_control(ah, ATH9K_ANI_FIRSTEP_LEVEL, |
| 666 | aniState->firstepLevel); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 667 | |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 668 | ath9k_hw_setrxfilter(ah, ath9k_hw_getrxfilter(ah) & |
| 669 | ~ATH9K_RX_FILTER_PHYERR); |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 670 | ath9k_ani_restart_old(ah); |
| 671 | |
| 672 | ENABLE_REGWRITE_BUFFER(ah); |
| 673 | |
| 674 | REG_WRITE(ah, AR_PHY_ERR_MASK_1, AR_PHY_ERR_OFDM_TIMING); |
| 675 | REG_WRITE(ah, AR_PHY_ERR_MASK_2, AR_PHY_ERR_CCK_TIMING); |
| 676 | |
| 677 | REGWRITE_BUFFER_FLUSH(ah); |
| 678 | DISABLE_REGWRITE_BUFFER(ah); |
| 679 | } |
| 680 | |
| 681 | /* |
| 682 | * Restore the ANI parameters in the HAL and reset the statistics. |
| 683 | * This routine should be called for every hardware reset and for |
| 684 | * every channel change. |
| 685 | */ |
| 686 | static void ath9k_ani_reset_new(struct ath_hw *ah, bool is_scanning) |
| 687 | { |
| 688 | struct ar5416AniState *aniState = ah->curani; |
| 689 | struct ath9k_channel *chan = ah->curchan; |
| 690 | struct ath_common *common = ath9k_hw_common(ah); |
| 691 | |
| 692 | if (!DO_ANI(ah)) |
| 693 | return; |
| 694 | |
| 695 | BUG_ON(aniState == NULL); |
| 696 | ah->stats.ast_ani_reset++; |
| 697 | |
| 698 | /* only allow a subset of functions in AP mode */ |
| 699 | if (ah->opmode == NL80211_IFTYPE_AP) { |
| 700 | if (IS_CHAN_2GHZ(chan)) { |
| 701 | ah->ani_function = (ATH9K_ANI_SPUR_IMMUNITY_LEVEL | |
| 702 | ATH9K_ANI_FIRSTEP_LEVEL); |
| 703 | if (AR_SREV_9300_20_OR_LATER(ah)) |
| 704 | ah->ani_function |= ATH9K_ANI_MRC_CCK; |
| 705 | } else |
| 706 | ah->ani_function = 0; |
| 707 | } |
| 708 | |
| 709 | /* always allow mode (on/off) to be controlled */ |
| 710 | ah->ani_function |= ATH9K_ANI_MODE; |
| 711 | |
| 712 | if (is_scanning || |
| 713 | (ah->opmode != NL80211_IFTYPE_STATION && |
| 714 | ah->opmode != NL80211_IFTYPE_ADHOC)) { |
| 715 | /* |
| 716 | * If we're scanning or in AP mode, the defaults (ini) |
| 717 | * should be in place. For an AP we assume the historical |
| 718 | * levels for this channel are probably outdated so start |
| 719 | * from defaults instead. |
| 720 | */ |
| 721 | if (aniState->ofdmNoiseImmunityLevel != |
| 722 | ATH9K_ANI_OFDM_DEF_LEVEL || |
| 723 | aniState->cckNoiseImmunityLevel != |
| 724 | ATH9K_ANI_CCK_DEF_LEVEL) { |
| 725 | ath_print(common, ATH_DBG_ANI, |
| 726 | "Restore defaults: opmode %u " |
| 727 | "chan %d Mhz/0x%x is_scanning=%d " |
| 728 | "ofdm:%d cck:%d\n", |
| 729 | ah->opmode, |
| 730 | chan->channel, |
| 731 | chan->channelFlags, |
| 732 | is_scanning, |
| 733 | aniState->ofdmNoiseImmunityLevel, |
| 734 | aniState->cckNoiseImmunityLevel); |
| 735 | |
| 736 | ath9k_hw_set_ofdm_nil(ah, ATH9K_ANI_OFDM_DEF_LEVEL); |
| 737 | ath9k_hw_set_cck_nil(ah, ATH9K_ANI_CCK_DEF_LEVEL); |
| 738 | } |
| 739 | } else { |
| 740 | /* |
| 741 | * restore historical levels for this channel |
| 742 | */ |
| 743 | ath_print(common, ATH_DBG_ANI, |
| 744 | "Restore history: opmode %u " |
| 745 | "chan %d Mhz/0x%x is_scanning=%d " |
| 746 | "ofdm:%d cck:%d\n", |
| 747 | ah->opmode, |
| 748 | chan->channel, |
| 749 | chan->channelFlags, |
| 750 | is_scanning, |
| 751 | aniState->ofdmNoiseImmunityLevel, |
| 752 | aniState->cckNoiseImmunityLevel); |
| 753 | |
| 754 | ath9k_hw_set_ofdm_nil(ah, |
| 755 | aniState->ofdmNoiseImmunityLevel); |
| 756 | ath9k_hw_set_cck_nil(ah, |
| 757 | aniState->cckNoiseImmunityLevel); |
| 758 | } |
| 759 | |
| 760 | /* |
| 761 | * enable phy counters if hw supports or if not, enable phy |
| 762 | * interrupts (so we can count each one) |
| 763 | */ |
| 764 | ath9k_ani_restart_new(ah); |
Sujith | 7d0d0df | 2010-04-16 11:53:57 +0530 | [diff] [blame] | 765 | |
| 766 | ENABLE_REGWRITE_BUFFER(ah); |
| 767 | |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 768 | REG_WRITE(ah, AR_PHY_ERR_MASK_1, AR_PHY_ERR_OFDM_TIMING); |
| 769 | REG_WRITE(ah, AR_PHY_ERR_MASK_2, AR_PHY_ERR_CCK_TIMING); |
Sujith | 7d0d0df | 2010-04-16 11:53:57 +0530 | [diff] [blame] | 770 | |
| 771 | REGWRITE_BUFFER_FLUSH(ah); |
| 772 | DISABLE_REGWRITE_BUFFER(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 773 | } |
| 774 | |
Luis R. Rodriguez | ac0bb76 | 2010-06-12 00:33:42 -0400 | [diff] [blame] | 775 | static void ath9k_hw_ani_monitor_old(struct ath_hw *ah, |
| 776 | struct ath9k_channel *chan) |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 777 | { |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 778 | struct ar5416AniState *aniState; |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 779 | struct ath_common *common = ath9k_hw_common(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 780 | int32_t listenTime; |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 781 | u32 phyCnt1, phyCnt2; |
| 782 | u32 ofdmPhyErrCnt, cckPhyErrCnt; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 783 | |
Gabor Juhos | 9950688 | 2009-01-14 20:17:11 +0100 | [diff] [blame] | 784 | if (!DO_ANI(ah)) |
| 785 | return; |
| 786 | |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 787 | aniState = ah->curani; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 788 | |
| 789 | listenTime = ath9k_hw_ani_get_listen_time(ah); |
| 790 | if (listenTime < 0) { |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 791 | ah->stats.ast_ani_lneg++; |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 792 | ath9k_ani_restart_old(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 793 | return; |
| 794 | } |
| 795 | |
| 796 | aniState->listenTime += listenTime; |
| 797 | |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 798 | ath9k_hw_update_mibstats(ah, &ah->ah_mibStats); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 799 | |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 800 | phyCnt1 = REG_READ(ah, AR_PHY_ERR_1); |
| 801 | phyCnt2 = REG_READ(ah, AR_PHY_ERR_2); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 802 | |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 803 | if (phyCnt1 < aniState->ofdmPhyErrBase || |
| 804 | phyCnt2 < aniState->cckPhyErrBase) { |
| 805 | if (phyCnt1 < aniState->ofdmPhyErrBase) { |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 806 | ath_print(common, ATH_DBG_ANI, |
| 807 | "phyCnt1 0x%x, resetting " |
| 808 | "counter value to 0x%x\n", |
| 809 | phyCnt1, |
| 810 | aniState->ofdmPhyErrBase); |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 811 | REG_WRITE(ah, AR_PHY_ERR_1, |
| 812 | aniState->ofdmPhyErrBase); |
| 813 | REG_WRITE(ah, AR_PHY_ERR_MASK_1, |
| 814 | AR_PHY_ERR_OFDM_TIMING); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 815 | } |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 816 | if (phyCnt2 < aniState->cckPhyErrBase) { |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 817 | ath_print(common, ATH_DBG_ANI, |
| 818 | "phyCnt2 0x%x, resetting " |
| 819 | "counter value to 0x%x\n", |
| 820 | phyCnt2, |
| 821 | aniState->cckPhyErrBase); |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 822 | REG_WRITE(ah, AR_PHY_ERR_2, |
| 823 | aniState->cckPhyErrBase); |
| 824 | REG_WRITE(ah, AR_PHY_ERR_MASK_2, |
| 825 | AR_PHY_ERR_CCK_TIMING); |
| 826 | } |
| 827 | return; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 828 | } |
| 829 | |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 830 | ofdmPhyErrCnt = phyCnt1 - aniState->ofdmPhyErrBase; |
| 831 | ah->stats.ast_ani_ofdmerrs += |
| 832 | ofdmPhyErrCnt - aniState->ofdmPhyErrCount; |
| 833 | aniState->ofdmPhyErrCount = ofdmPhyErrCnt; |
| 834 | |
| 835 | cckPhyErrCnt = phyCnt2 - aniState->cckPhyErrBase; |
| 836 | ah->stats.ast_ani_cckerrs += |
| 837 | cckPhyErrCnt - aniState->cckPhyErrCount; |
| 838 | aniState->cckPhyErrCount = cckPhyErrCnt; |
| 839 | |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 840 | if (aniState->listenTime > 5 * ah->aniperiod) { |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 841 | if (aniState->ofdmPhyErrCount <= aniState->listenTime * |
| 842 | aniState->ofdmTrigLow / 1000 && |
| 843 | aniState->cckPhyErrCount <= aniState->listenTime * |
| 844 | aniState->cckTrigLow / 1000) |
| 845 | ath9k_hw_ani_lower_immunity(ah); |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 846 | ath9k_ani_restart_old(ah); |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 847 | } else if (aniState->listenTime > ah->aniperiod) { |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 848 | if (aniState->ofdmPhyErrCount > aniState->listenTime * |
| 849 | aniState->ofdmTrigHigh / 1000) { |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 850 | ath9k_hw_ani_ofdm_err_trigger_old(ah); |
| 851 | ath9k_ani_restart_old(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 852 | } else if (aniState->cckPhyErrCount > |
| 853 | aniState->listenTime * aniState->cckTrigHigh / |
| 854 | 1000) { |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 855 | ath9k_hw_ani_cck_err_trigger_old(ah); |
| 856 | ath9k_ani_restart_old(ah); |
| 857 | } |
| 858 | } |
| 859 | } |
| 860 | |
| 861 | static void ath9k_hw_ani_monitor_new(struct ath_hw *ah, |
| 862 | struct ath9k_channel *chan) |
| 863 | { |
| 864 | struct ar5416AniState *aniState; |
| 865 | struct ath_common *common = ath9k_hw_common(ah); |
| 866 | int32_t listenTime; |
| 867 | u32 phyCnt1, phyCnt2; |
| 868 | u32 ofdmPhyErrCnt, cckPhyErrCnt; |
| 869 | u32 ofdmPhyErrRate, cckPhyErrRate; |
| 870 | |
| 871 | if (!DO_ANI(ah)) |
| 872 | return; |
| 873 | |
| 874 | aniState = ah->curani; |
| 875 | if (WARN_ON(!aniState)) |
| 876 | return; |
| 877 | |
| 878 | listenTime = ath9k_hw_ani_get_listen_time(ah); |
| 879 | if (listenTime <= 0) { |
| 880 | ah->stats.ast_ani_lneg++; |
| 881 | /* restart ANI period if listenTime is invalid */ |
| 882 | ath_print(common, ATH_DBG_ANI, |
| 883 | "listenTime=%d - on new ani monitor\n", |
| 884 | listenTime); |
| 885 | ath9k_ani_restart_new(ah); |
| 886 | return; |
| 887 | } |
| 888 | |
| 889 | aniState->listenTime += listenTime; |
| 890 | |
| 891 | ath9k_hw_update_mibstats(ah, &ah->ah_mibStats); |
| 892 | |
| 893 | phyCnt1 = REG_READ(ah, AR_PHY_ERR_1); |
| 894 | phyCnt2 = REG_READ(ah, AR_PHY_ERR_2); |
| 895 | |
| 896 | if (phyCnt1 < aniState->ofdmPhyErrBase || |
| 897 | phyCnt2 < aniState->cckPhyErrBase) { |
| 898 | if (phyCnt1 < aniState->ofdmPhyErrBase) { |
| 899 | ath_print(common, ATH_DBG_ANI, |
| 900 | "phyCnt1 0x%x, resetting " |
| 901 | "counter value to 0x%x\n", |
| 902 | phyCnt1, |
| 903 | aniState->ofdmPhyErrBase); |
| 904 | REG_WRITE(ah, AR_PHY_ERR_1, |
| 905 | aniState->ofdmPhyErrBase); |
| 906 | REG_WRITE(ah, AR_PHY_ERR_MASK_1, |
| 907 | AR_PHY_ERR_OFDM_TIMING); |
| 908 | } |
| 909 | if (phyCnt2 < aniState->cckPhyErrBase) { |
| 910 | ath_print(common, ATH_DBG_ANI, |
| 911 | "phyCnt2 0x%x, resetting " |
| 912 | "counter value to 0x%x\n", |
| 913 | phyCnt2, |
| 914 | aniState->cckPhyErrBase); |
| 915 | REG_WRITE(ah, AR_PHY_ERR_2, |
| 916 | aniState->cckPhyErrBase); |
| 917 | REG_WRITE(ah, AR_PHY_ERR_MASK_2, |
| 918 | AR_PHY_ERR_CCK_TIMING); |
| 919 | } |
| 920 | return; |
| 921 | } |
| 922 | |
| 923 | ofdmPhyErrCnt = phyCnt1 - aniState->ofdmPhyErrBase; |
| 924 | ah->stats.ast_ani_ofdmerrs += |
| 925 | ofdmPhyErrCnt - aniState->ofdmPhyErrCount; |
| 926 | aniState->ofdmPhyErrCount = ofdmPhyErrCnt; |
| 927 | |
| 928 | cckPhyErrCnt = phyCnt2 - aniState->cckPhyErrBase; |
| 929 | ah->stats.ast_ani_cckerrs += |
| 930 | cckPhyErrCnt - aniState->cckPhyErrCount; |
| 931 | aniState->cckPhyErrCount = cckPhyErrCnt; |
| 932 | |
| 933 | ath_print(common, ATH_DBG_ANI, |
| 934 | "Errors: OFDM=0x%08x-0x%08x=%d " |
| 935 | "CCK=0x%08x-0x%08x=%d\n", |
| 936 | phyCnt1, |
| 937 | aniState->ofdmPhyErrBase, |
| 938 | ofdmPhyErrCnt, |
| 939 | phyCnt2, |
| 940 | aniState->cckPhyErrBase, |
| 941 | cckPhyErrCnt); |
| 942 | |
| 943 | ofdmPhyErrRate = aniState->ofdmPhyErrCount * 1000 / |
| 944 | aniState->listenTime; |
| 945 | cckPhyErrRate = aniState->cckPhyErrCount * 1000 / |
| 946 | aniState->listenTime; |
| 947 | |
| 948 | ath_print(common, ATH_DBG_ANI, |
| 949 | "listenTime=%d OFDM:%d errs=%d/s CCK:%d " |
| 950 | "errs=%d/s ofdm_turn=%d\n", |
| 951 | listenTime, aniState->ofdmNoiseImmunityLevel, |
| 952 | ofdmPhyErrRate, aniState->cckNoiseImmunityLevel, |
| 953 | cckPhyErrRate, aniState->ofdmsTurn); |
| 954 | |
| 955 | if (aniState->listenTime > 5 * ah->aniperiod) { |
| 956 | if (ofdmPhyErrRate <= aniState->ofdmTrigLow && |
| 957 | cckPhyErrRate <= aniState->cckTrigLow) { |
| 958 | ath_print(common, ATH_DBG_ANI, |
| 959 | "1. listenTime=%d OFDM:%d errs=%d/s(<%d) " |
| 960 | "CCK:%d errs=%d/s(<%d) -> " |
| 961 | "ath9k_hw_ani_lower_immunity()\n", |
| 962 | aniState->listenTime, |
| 963 | aniState->ofdmNoiseImmunityLevel, |
| 964 | ofdmPhyErrRate, |
| 965 | aniState->ofdmTrigLow, |
| 966 | aniState->cckNoiseImmunityLevel, |
| 967 | cckPhyErrRate, |
| 968 | aniState->cckTrigLow); |
| 969 | ath9k_hw_ani_lower_immunity(ah); |
| 970 | aniState->ofdmsTurn = !aniState->ofdmsTurn; |
| 971 | } |
| 972 | ath_print(common, ATH_DBG_ANI, |
| 973 | "1 listenTime=%d ofdm=%d/s cck=%d/s - " |
| 974 | "calling ath9k_ani_restart_new()\n", |
| 975 | aniState->listenTime, ofdmPhyErrRate, cckPhyErrRate); |
| 976 | ath9k_ani_restart_new(ah); |
| 977 | } else if (aniState->listenTime > ah->aniperiod) { |
| 978 | /* check to see if need to raise immunity */ |
| 979 | if (ofdmPhyErrRate > aniState->ofdmTrigHigh && |
| 980 | (cckPhyErrRate <= aniState->cckTrigHigh || |
| 981 | aniState->ofdmsTurn)) { |
| 982 | ath_print(common, ATH_DBG_ANI, |
| 983 | "2 listenTime=%d OFDM:%d errs=%d/s(>%d) -> " |
| 984 | "ath9k_hw_ani_ofdm_err_trigger_new()\n", |
| 985 | aniState->listenTime, |
| 986 | aniState->ofdmNoiseImmunityLevel, |
| 987 | ofdmPhyErrRate, |
| 988 | aniState->ofdmTrigHigh); |
| 989 | ath9k_hw_ani_ofdm_err_trigger_new(ah); |
| 990 | ath9k_ani_restart_new(ah); |
| 991 | aniState->ofdmsTurn = false; |
| 992 | } else if (cckPhyErrRate > aniState->cckTrigHigh) { |
| 993 | ath_print(common, ATH_DBG_ANI, |
| 994 | "3 listenTime=%d CCK:%d errs=%d/s(>%d) -> " |
| 995 | "ath9k_hw_ani_cck_err_trigger_new()\n", |
| 996 | aniState->listenTime, |
| 997 | aniState->cckNoiseImmunityLevel, |
| 998 | cckPhyErrRate, |
| 999 | aniState->cckTrigHigh); |
| 1000 | ath9k_hw_ani_cck_err_trigger_new(ah); |
| 1001 | ath9k_ani_restart_new(ah); |
| 1002 | aniState->ofdmsTurn = true; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1003 | } |
| 1004 | } |
| 1005 | } |
| 1006 | |
Sujith | cbe61d8 | 2009-02-09 13:27:12 +0530 | [diff] [blame] | 1007 | void ath9k_enable_mib_counters(struct ath_hw *ah) |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1008 | { |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 1009 | struct ath_common *common = ath9k_hw_common(ah); |
| 1010 | |
| 1011 | ath_print(common, ATH_DBG_ANI, "Enable MIB counters\n"); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1012 | |
Sujith | cbe61d8 | 2009-02-09 13:27:12 +0530 | [diff] [blame] | 1013 | ath9k_hw_update_mibstats(ah, &ah->ah_mibStats); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1014 | |
Sujith | 7d0d0df | 2010-04-16 11:53:57 +0530 | [diff] [blame] | 1015 | ENABLE_REGWRITE_BUFFER(ah); |
| 1016 | |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1017 | REG_WRITE(ah, AR_FILT_OFDM, 0); |
| 1018 | REG_WRITE(ah, AR_FILT_CCK, 0); |
| 1019 | REG_WRITE(ah, AR_MIBC, |
| 1020 | ~(AR_MIBC_COW | AR_MIBC_FMC | AR_MIBC_CMC | AR_MIBC_MCS) |
| 1021 | & 0x0f); |
| 1022 | REG_WRITE(ah, AR_PHY_ERR_MASK_1, AR_PHY_ERR_OFDM_TIMING); |
| 1023 | REG_WRITE(ah, AR_PHY_ERR_MASK_2, AR_PHY_ERR_CCK_TIMING); |
Sujith | 7d0d0df | 2010-04-16 11:53:57 +0530 | [diff] [blame] | 1024 | |
| 1025 | REGWRITE_BUFFER_FLUSH(ah); |
| 1026 | DISABLE_REGWRITE_BUFFER(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1027 | } |
| 1028 | |
Sujith | 0fd06c9 | 2009-02-12 10:06:51 +0530 | [diff] [blame] | 1029 | /* Freeze the MIB counters, get the stats and then clear them */ |
Sujith | cbe61d8 | 2009-02-09 13:27:12 +0530 | [diff] [blame] | 1030 | void ath9k_hw_disable_mib_counters(struct ath_hw *ah) |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1031 | { |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 1032 | struct ath_common *common = ath9k_hw_common(ah); |
| 1033 | |
| 1034 | ath_print(common, ATH_DBG_ANI, "Disable MIB counters\n"); |
| 1035 | |
Sujith | 0fd06c9 | 2009-02-12 10:06:51 +0530 | [diff] [blame] | 1036 | REG_WRITE(ah, AR_MIBC, AR_MIBC_FMC); |
Sujith | cbe61d8 | 2009-02-09 13:27:12 +0530 | [diff] [blame] | 1037 | ath9k_hw_update_mibstats(ah, &ah->ah_mibStats); |
Sujith | 0fd06c9 | 2009-02-12 10:06:51 +0530 | [diff] [blame] | 1038 | REG_WRITE(ah, AR_MIBC, AR_MIBC_CMC); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1039 | REG_WRITE(ah, AR_FILT_OFDM, 0); |
| 1040 | REG_WRITE(ah, AR_FILT_CCK, 0); |
| 1041 | } |
Sujith | 21d5130 | 2010-06-01 15:14:18 +0530 | [diff] [blame] | 1042 | EXPORT_SYMBOL(ath9k_hw_disable_mib_counters); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1043 | |
Sujith | cbe61d8 | 2009-02-09 13:27:12 +0530 | [diff] [blame] | 1044 | u32 ath9k_hw_GetMibCycleCountsPct(struct ath_hw *ah, |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1045 | u32 *rxc_pcnt, |
| 1046 | u32 *rxf_pcnt, |
| 1047 | u32 *txf_pcnt) |
| 1048 | { |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 1049 | struct ath_common *common = ath9k_hw_common(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1050 | static u32 cycles, rx_clear, rx_frame, tx_frame; |
| 1051 | u32 good = 1; |
| 1052 | |
| 1053 | u32 rc = REG_READ(ah, AR_RCCNT); |
| 1054 | u32 rf = REG_READ(ah, AR_RFCNT); |
| 1055 | u32 tf = REG_READ(ah, AR_TFCNT); |
| 1056 | u32 cc = REG_READ(ah, AR_CCCNT); |
| 1057 | |
| 1058 | if (cycles == 0 || cycles > cc) { |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 1059 | ath_print(common, ATH_DBG_ANI, |
| 1060 | "cycle counter wrap. ExtBusy = 0\n"); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1061 | good = 0; |
| 1062 | } else { |
| 1063 | u32 cc_d = cc - cycles; |
| 1064 | u32 rc_d = rc - rx_clear; |
| 1065 | u32 rf_d = rf - rx_frame; |
| 1066 | u32 tf_d = tf - tx_frame; |
| 1067 | |
| 1068 | if (cc_d != 0) { |
| 1069 | *rxc_pcnt = rc_d * 100 / cc_d; |
| 1070 | *rxf_pcnt = rf_d * 100 / cc_d; |
| 1071 | *txf_pcnt = tf_d * 100 / cc_d; |
| 1072 | } else { |
| 1073 | good = 0; |
| 1074 | } |
| 1075 | } |
| 1076 | |
| 1077 | cycles = cc; |
| 1078 | rx_frame = rf; |
| 1079 | rx_clear = rc; |
| 1080 | tx_frame = tf; |
| 1081 | |
| 1082 | return good; |
| 1083 | } |
| 1084 | |
| 1085 | /* |
| 1086 | * Process a MIB interrupt. We may potentially be invoked because |
| 1087 | * any of the MIB counters overflow/trigger so don't assume we're |
| 1088 | * here because a PHY error counter triggered. |
| 1089 | */ |
Luis R. Rodriguez | ac0bb76 | 2010-06-12 00:33:42 -0400 | [diff] [blame] | 1090 | static void ath9k_hw_proc_mib_event_old(struct ath_hw *ah) |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1091 | { |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1092 | u32 phyCnt1, phyCnt2; |
| 1093 | |
| 1094 | /* Reset these counters regardless */ |
| 1095 | REG_WRITE(ah, AR_FILT_OFDM, 0); |
| 1096 | REG_WRITE(ah, AR_FILT_CCK, 0); |
| 1097 | if (!(REG_READ(ah, AR_SLP_MIB_CTRL) & AR_SLP_MIB_PENDING)) |
| 1098 | REG_WRITE(ah, AR_SLP_MIB_CTRL, AR_SLP_MIB_CLEAR); |
| 1099 | |
| 1100 | /* Clear the mib counters and save them in the stats */ |
Sujith | cbe61d8 | 2009-02-09 13:27:12 +0530 | [diff] [blame] | 1101 | ath9k_hw_update_mibstats(ah, &ah->ah_mibStats); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1102 | |
Luis R. Rodriguez | 6e97f0f | 2010-06-12 00:33:41 -0400 | [diff] [blame] | 1103 | if (!DO_ANI(ah)) { |
| 1104 | /* |
| 1105 | * We must always clear the interrupt cause by |
| 1106 | * resetting the phy error regs. |
| 1107 | */ |
| 1108 | REG_WRITE(ah, AR_PHY_ERR_1, 0); |
| 1109 | REG_WRITE(ah, AR_PHY_ERR_2, 0); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1110 | return; |
Luis R. Rodriguez | 6e97f0f | 2010-06-12 00:33:41 -0400 | [diff] [blame] | 1111 | } |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1112 | |
| 1113 | /* NB: these are not reset-on-read */ |
| 1114 | phyCnt1 = REG_READ(ah, AR_PHY_ERR_1); |
| 1115 | phyCnt2 = REG_READ(ah, AR_PHY_ERR_2); |
| 1116 | if (((phyCnt1 & AR_MIBCNT_INTRMASK) == AR_MIBCNT_INTRMASK) || |
| 1117 | ((phyCnt2 & AR_MIBCNT_INTRMASK) == AR_MIBCNT_INTRMASK)) { |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 1118 | struct ar5416AniState *aniState = ah->curani; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1119 | u32 ofdmPhyErrCnt, cckPhyErrCnt; |
| 1120 | |
| 1121 | /* NB: only use ast_ani_*errs with AH_PRIVATE_DIAG */ |
| 1122 | ofdmPhyErrCnt = phyCnt1 - aniState->ofdmPhyErrBase; |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 1123 | ah->stats.ast_ani_ofdmerrs += |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1124 | ofdmPhyErrCnt - aniState->ofdmPhyErrCount; |
| 1125 | aniState->ofdmPhyErrCount = ofdmPhyErrCnt; |
| 1126 | |
| 1127 | cckPhyErrCnt = phyCnt2 - aniState->cckPhyErrBase; |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 1128 | ah->stats.ast_ani_cckerrs += |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1129 | cckPhyErrCnt - aniState->cckPhyErrCount; |
| 1130 | aniState->cckPhyErrCount = cckPhyErrCnt; |
| 1131 | |
| 1132 | /* |
| 1133 | * NB: figure out which counter triggered. If both |
| 1134 | * trigger we'll only deal with one as the processing |
| 1135 | * clobbers the error counter so the trigger threshold |
| 1136 | * check will never be true. |
| 1137 | */ |
| 1138 | if (aniState->ofdmPhyErrCount > aniState->ofdmTrigHigh) |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 1139 | ath9k_hw_ani_ofdm_err_trigger_new(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1140 | if (aniState->cckPhyErrCount > aniState->cckTrigHigh) |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 1141 | ath9k_hw_ani_cck_err_trigger_old(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1142 | /* NB: always restart to insure the h/w counters are reset */ |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 1143 | ath9k_ani_restart_old(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1144 | } |
| 1145 | } |
| 1146 | |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 1147 | /* |
| 1148 | * Process a MIB interrupt. We may potentially be invoked because |
| 1149 | * any of the MIB counters overflow/trigger so don't assume we're |
| 1150 | * here because a PHY error counter triggered. |
| 1151 | */ |
| 1152 | static void ath9k_hw_proc_mib_event_new(struct ath_hw *ah) |
| 1153 | { |
| 1154 | u32 phyCnt1, phyCnt2; |
| 1155 | |
| 1156 | /* Reset these counters regardless */ |
| 1157 | REG_WRITE(ah, AR_FILT_OFDM, 0); |
| 1158 | REG_WRITE(ah, AR_FILT_CCK, 0); |
| 1159 | if (!(REG_READ(ah, AR_SLP_MIB_CTRL) & AR_SLP_MIB_PENDING)) |
| 1160 | REG_WRITE(ah, AR_SLP_MIB_CTRL, AR_SLP_MIB_CLEAR); |
| 1161 | |
| 1162 | /* Clear the mib counters and save them in the stats */ |
| 1163 | ath9k_hw_update_mibstats(ah, &ah->ah_mibStats); |
| 1164 | |
| 1165 | if (!DO_ANI(ah)) { |
| 1166 | /* |
| 1167 | * We must always clear the interrupt cause by |
| 1168 | * resetting the phy error regs. |
| 1169 | */ |
| 1170 | REG_WRITE(ah, AR_PHY_ERR_1, 0); |
| 1171 | REG_WRITE(ah, AR_PHY_ERR_2, 0); |
| 1172 | return; |
| 1173 | } |
| 1174 | |
| 1175 | /* NB: these are not reset-on-read */ |
| 1176 | phyCnt1 = REG_READ(ah, AR_PHY_ERR_1); |
| 1177 | phyCnt2 = REG_READ(ah, AR_PHY_ERR_2); |
| 1178 | |
| 1179 | /* NB: always restart to insure the h/w counters are reset */ |
| 1180 | if (((phyCnt1 & AR_MIBCNT_INTRMASK) == AR_MIBCNT_INTRMASK) || |
| 1181 | ((phyCnt2 & AR_MIBCNT_INTRMASK) == AR_MIBCNT_INTRMASK)) |
| 1182 | ath9k_ani_restart_new(ah); |
| 1183 | } |
| 1184 | |
Sujith | cbe61d8 | 2009-02-09 13:27:12 +0530 | [diff] [blame] | 1185 | void ath9k_hw_ani_setup(struct ath_hw *ah) |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1186 | { |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1187 | int i; |
| 1188 | |
| 1189 | const int totalSizeDesired[] = { -55, -55, -55, -55, -62 }; |
| 1190 | const int coarseHigh[] = { -14, -14, -14, -14, -12 }; |
| 1191 | const int coarseLow[] = { -64, -64, -64, -64, -70 }; |
| 1192 | const int firpwr[] = { -78, -78, -78, -78, -80 }; |
| 1193 | |
| 1194 | for (i = 0; i < 5; i++) { |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 1195 | ah->totalSizeDesired[i] = totalSizeDesired[i]; |
| 1196 | ah->coarse_high[i] = coarseHigh[i]; |
| 1197 | ah->coarse_low[i] = coarseLow[i]; |
| 1198 | ah->firpwr[i] = firpwr[i]; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1199 | } |
| 1200 | } |
| 1201 | |
Luis R. Rodriguez | f637cfd | 2009-08-03 12:24:46 -0700 | [diff] [blame] | 1202 | void ath9k_hw_ani_init(struct ath_hw *ah) |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1203 | { |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 1204 | struct ath_common *common = ath9k_hw_common(ah); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1205 | int i; |
| 1206 | |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 1207 | ath_print(common, ATH_DBG_ANI, "Initialize ANI\n"); |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1208 | |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 1209 | memset(ah->ani, 0, sizeof(ah->ani)); |
| 1210 | for (i = 0; i < ARRAY_SIZE(ah->ani); i++) { |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 1211 | if (AR_SREV_9300_20_OR_LATER(ah) || modparam_force_new_ani) { |
| 1212 | ah->ani[i].ofdmTrigHigh = ATH9K_ANI_OFDM_TRIG_HIGH_NEW; |
| 1213 | ah->ani[i].ofdmTrigLow = ATH9K_ANI_OFDM_TRIG_LOW_NEW; |
| 1214 | |
| 1215 | ah->ani[i].cckTrigHigh = ATH9K_ANI_CCK_TRIG_HIGH_NEW; |
| 1216 | ah->ani[i].cckTrigLow = ATH9K_ANI_CCK_TRIG_LOW_NEW; |
| 1217 | |
| 1218 | ah->ani[i].spurImmunityLevel = |
| 1219 | ATH9K_ANI_SPUR_IMMUNE_LVL_NEW; |
| 1220 | |
| 1221 | ah->ani[i].firstepLevel = ATH9K_ANI_FIRSTEP_LVL_NEW; |
| 1222 | |
| 1223 | ah->ani[i].ofdmPhyErrBase = 0; |
| 1224 | ah->ani[i].cckPhyErrBase = 0; |
| 1225 | |
| 1226 | if (AR_SREV_9300_20_OR_LATER(ah)) |
| 1227 | ah->ani[i].mrcCCKOff = |
| 1228 | !ATH9K_ANI_ENABLE_MRC_CCK; |
| 1229 | else |
| 1230 | ah->ani[i].mrcCCKOff = true; |
| 1231 | |
| 1232 | ah->ani[i].ofdmsTurn = true; |
| 1233 | } else { |
| 1234 | ah->ani[i].ofdmTrigHigh = ATH9K_ANI_OFDM_TRIG_HIGH_OLD; |
| 1235 | ah->ani[i].ofdmTrigLow = ATH9K_ANI_OFDM_TRIG_LOW_OLD; |
| 1236 | |
| 1237 | ah->ani[i].cckTrigHigh = ATH9K_ANI_CCK_TRIG_HIGH_OLD; |
| 1238 | ah->ani[i].cckTrigLow = ATH9K_ANI_CCK_TRIG_LOW_OLD; |
| 1239 | |
| 1240 | ah->ani[i].spurImmunityLevel = |
| 1241 | ATH9K_ANI_SPUR_IMMUNE_LVL_OLD; |
| 1242 | ah->ani[i].firstepLevel = ATH9K_ANI_FIRSTEP_LVL_OLD; |
| 1243 | |
| 1244 | ah->ani[i].ofdmPhyErrBase = |
| 1245 | AR_PHY_COUNTMAX - ATH9K_ANI_OFDM_TRIG_HIGH_OLD; |
| 1246 | ah->ani[i].cckPhyErrBase = |
| 1247 | AR_PHY_COUNTMAX - ATH9K_ANI_CCK_TRIG_HIGH_OLD; |
| 1248 | ah->ani[i].cckWeakSigThreshold = |
| 1249 | ATH9K_ANI_CCK_WEAK_SIG_THR; |
| 1250 | } |
| 1251 | |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 1252 | ah->ani[i].rssiThrHigh = ATH9K_ANI_RSSI_THR_HIGH; |
| 1253 | ah->ani[i].rssiThrLow = ATH9K_ANI_RSSI_THR_LOW; |
| 1254 | ah->ani[i].ofdmWeakSigDetectOff = |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1255 | !ATH9K_ANI_USE_OFDM_WEAK_SIG; |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 1256 | ah->ani[i].cckNoiseImmunityLevel = ATH9K_ANI_CCK_DEF_LEVEL; |
| 1257 | } |
| 1258 | |
| 1259 | /* |
| 1260 | * since we expect some ongoing maintenance on the tables, let's sanity |
| 1261 | * check here default level should not modify INI setting. |
| 1262 | */ |
| 1263 | if (AR_SREV_9300_20_OR_LATER(ah) || modparam_force_new_ani) { |
| 1264 | const struct ani_ofdm_level_entry *entry_ofdm; |
| 1265 | const struct ani_cck_level_entry *entry_cck; |
| 1266 | |
| 1267 | entry_ofdm = &ofdm_level_table[ATH9K_ANI_OFDM_DEF_LEVEL]; |
| 1268 | entry_cck = &cck_level_table[ATH9K_ANI_CCK_DEF_LEVEL]; |
| 1269 | |
| 1270 | ah->aniperiod = ATH9K_ANI_PERIOD_NEW; |
| 1271 | ah->config.ani_poll_interval = ATH9K_ANI_POLLINTERVAL_NEW; |
| 1272 | } else { |
| 1273 | ah->aniperiod = ATH9K_ANI_PERIOD_OLD; |
| 1274 | ah->config.ani_poll_interval = ATH9K_ANI_POLLINTERVAL_OLD; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1275 | } |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1276 | |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 1277 | ath_print(common, ATH_DBG_ANI, |
| 1278 | "Setting OfdmErrBase = 0x%08x\n", |
| 1279 | ah->ani[0].ofdmPhyErrBase); |
| 1280 | ath_print(common, ATH_DBG_ANI, "Setting cckErrBase = 0x%08x\n", |
| 1281 | ah->ani[0].cckPhyErrBase); |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 1282 | |
Sujith | 7d0d0df | 2010-04-16 11:53:57 +0530 | [diff] [blame] | 1283 | ENABLE_REGWRITE_BUFFER(ah); |
| 1284 | |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 1285 | REG_WRITE(ah, AR_PHY_ERR_1, ah->ani[0].ofdmPhyErrBase); |
| 1286 | REG_WRITE(ah, AR_PHY_ERR_2, ah->ani[0].cckPhyErrBase); |
Sujith | 7d0d0df | 2010-04-16 11:53:57 +0530 | [diff] [blame] | 1287 | |
| 1288 | REGWRITE_BUFFER_FLUSH(ah); |
| 1289 | DISABLE_REGWRITE_BUFFER(ah); |
| 1290 | |
Sujith | 1aa8e84 | 2009-08-13 09:34:25 +0530 | [diff] [blame] | 1291 | ath9k_enable_mib_counters(ah); |
| 1292 | |
Sujith | 2660b81 | 2009-02-09 13:27:26 +0530 | [diff] [blame] | 1293 | if (ah->config.enable_ani) |
| 1294 | ah->proc_phyerr |= HAL_PROCESS_ANI; |
Sujith | f1dc560 | 2008-10-29 10:16:30 +0530 | [diff] [blame] | 1295 | } |
Luis R. Rodriguez | ac0bb76 | 2010-06-12 00:33:42 -0400 | [diff] [blame] | 1296 | |
| 1297 | void ath9k_hw_attach_ani_ops_old(struct ath_hw *ah) |
| 1298 | { |
| 1299 | struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah); |
| 1300 | struct ath_hw_ops *ops = ath9k_hw_ops(ah); |
| 1301 | |
| 1302 | priv_ops->ani_reset = ath9k_ani_reset_old; |
| 1303 | priv_ops->ani_lower_immunity = ath9k_hw_ani_lower_immunity_old; |
| 1304 | |
| 1305 | ops->ani_proc_mib_event = ath9k_hw_proc_mib_event_old; |
| 1306 | ops->ani_monitor = ath9k_hw_ani_monitor_old; |
Luis R. Rodriguez | e36b27a | 2010-06-12 00:33:45 -0400 | [diff] [blame] | 1307 | |
| 1308 | ath_print(ath9k_hw_common(ah), ATH_DBG_ANY, "Using ANI v1\n"); |
| 1309 | } |
| 1310 | |
| 1311 | void ath9k_hw_attach_ani_ops_new(struct ath_hw *ah) |
| 1312 | { |
| 1313 | struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah); |
| 1314 | struct ath_hw_ops *ops = ath9k_hw_ops(ah); |
| 1315 | |
| 1316 | priv_ops->ani_reset = ath9k_ani_reset_new; |
| 1317 | priv_ops->ani_lower_immunity = ath9k_hw_ani_lower_immunity_new; |
| 1318 | |
| 1319 | ops->ani_proc_mib_event = ath9k_hw_proc_mib_event_new; |
| 1320 | ops->ani_monitor = ath9k_hw_ani_monitor_new; |
| 1321 | |
| 1322 | ath_print(ath9k_hw_common(ah), ATH_DBG_ANY, "Using ANI v2\n"); |
Luis R. Rodriguez | ac0bb76 | 2010-06-12 00:33:42 -0400 | [diff] [blame] | 1323 | } |