Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1 | /* |
Sujith Manoharan | 5b68138 | 2011-05-17 13:36:18 +0530 | [diff] [blame] | 2 | * Copyright (c) 2008-2011 Atheros Communications Inc. |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [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 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 17 | #include <linux/nl80211.h> |
Vasanthakumar Thiagarajan | 6908162 | 2011-02-19 01:13:42 -0800 | [diff] [blame] | 18 | #include <linux/delay.h> |
Sujith | 394cf0a | 2009-02-09 13:26:54 +0530 | [diff] [blame] | 19 | #include "ath9k.h" |
Luis R. Rodriguez | af03abe | 2009-09-09 02:33:11 -0700 | [diff] [blame] | 20 | #include "btcoex.h" |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 21 | |
Sven Eckelmann | 313eb87 | 2012-06-25 07:15:22 +0200 | [diff] [blame] | 22 | u8 ath9k_parse_mpdudensity(u8 mpdudensity) |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 23 | { |
| 24 | /* |
| 25 | * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing": |
| 26 | * 0 for no restriction |
| 27 | * 1 for 1/4 us |
| 28 | * 2 for 1/2 us |
| 29 | * 3 for 1 us |
| 30 | * 4 for 2 us |
| 31 | * 5 for 4 us |
| 32 | * 6 for 8 us |
| 33 | * 7 for 16 us |
| 34 | */ |
| 35 | switch (mpdudensity) { |
| 36 | case 0: |
| 37 | return 0; |
| 38 | case 1: |
| 39 | case 2: |
| 40 | case 3: |
| 41 | /* Our lower layer calculations limit our precision to |
| 42 | 1 microsecond */ |
| 43 | return 1; |
| 44 | case 4: |
| 45 | return 2; |
| 46 | case 5: |
| 47 | return 4; |
| 48 | case 6: |
| 49 | return 8; |
| 50 | case 7: |
| 51 | return 16; |
| 52 | default: |
| 53 | return 0; |
| 54 | } |
| 55 | } |
| 56 | |
Vasanthakumar Thiagarajan | 6908162 | 2011-02-19 01:13:42 -0800 | [diff] [blame] | 57 | static bool ath9k_has_pending_frames(struct ath_softc *sc, struct ath_txq *txq) |
| 58 | { |
| 59 | bool pending = false; |
| 60 | |
| 61 | spin_lock_bh(&txq->axq_lock); |
| 62 | |
| 63 | if (txq->axq_depth || !list_empty(&txq->axq_acq)) |
| 64 | pending = true; |
Vasanthakumar Thiagarajan | 6908162 | 2011-02-19 01:13:42 -0800 | [diff] [blame] | 65 | |
| 66 | spin_unlock_bh(&txq->axq_lock); |
| 67 | return pending; |
| 68 | } |
| 69 | |
Mohammed Shafi Shajakhan | 6d79cb4 | 2011-05-19 17:40:46 +0530 | [diff] [blame] | 70 | static bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode) |
Luis R. Rodriguez | 8c77a56 | 2009-09-09 21:02:34 -0700 | [diff] [blame] | 71 | { |
| 72 | unsigned long flags; |
| 73 | bool ret; |
| 74 | |
Luis R. Rodriguez | 9ecdef4 | 2009-09-09 21:10:09 -0700 | [diff] [blame] | 75 | spin_lock_irqsave(&sc->sc_pm_lock, flags); |
| 76 | ret = ath9k_hw_setpower(sc->sc_ah, mode); |
| 77 | spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
Luis R. Rodriguez | 8c77a56 | 2009-09-09 21:02:34 -0700 | [diff] [blame] | 78 | |
| 79 | return ret; |
| 80 | } |
| 81 | |
Luis R. Rodriguez | a91d75a | 2009-09-09 20:29:18 -0700 | [diff] [blame] | 82 | void ath9k_ps_wakeup(struct ath_softc *sc) |
| 83 | { |
Felix Fietkau | 898c914 | 2010-10-12 14:02:53 +0200 | [diff] [blame] | 84 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
Luis R. Rodriguez | a91d75a | 2009-09-09 20:29:18 -0700 | [diff] [blame] | 85 | unsigned long flags; |
Felix Fietkau | fbb078f | 2010-11-03 01:36:51 +0100 | [diff] [blame] | 86 | enum ath9k_power_mode power_mode; |
Luis R. Rodriguez | a91d75a | 2009-09-09 20:29:18 -0700 | [diff] [blame] | 87 | |
| 88 | spin_lock_irqsave(&sc->sc_pm_lock, flags); |
| 89 | if (++sc->ps_usecount != 1) |
| 90 | goto unlock; |
| 91 | |
Felix Fietkau | fbb078f | 2010-11-03 01:36:51 +0100 | [diff] [blame] | 92 | power_mode = sc->sc_ah->power_mode; |
Luis R. Rodriguez | 9ecdef4 | 2009-09-09 21:10:09 -0700 | [diff] [blame] | 93 | ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE); |
Luis R. Rodriguez | a91d75a | 2009-09-09 20:29:18 -0700 | [diff] [blame] | 94 | |
Felix Fietkau | 898c914 | 2010-10-12 14:02:53 +0200 | [diff] [blame] | 95 | /* |
| 96 | * While the hardware is asleep, the cycle counters contain no |
| 97 | * useful data. Better clear them now so that they don't mess up |
| 98 | * survey data results. |
| 99 | */ |
Felix Fietkau | fbb078f | 2010-11-03 01:36:51 +0100 | [diff] [blame] | 100 | if (power_mode != ATH9K_PM_AWAKE) { |
| 101 | spin_lock(&common->cc_lock); |
| 102 | ath_hw_cycle_counters_update(common); |
| 103 | memset(&common->cc_survey, 0, sizeof(common->cc_survey)); |
Rajkumar Manoharan | c9ae6ab | 2012-06-04 16:28:41 +0530 | [diff] [blame] | 104 | memset(&common->cc_ani, 0, sizeof(common->cc_ani)); |
Felix Fietkau | fbb078f | 2010-11-03 01:36:51 +0100 | [diff] [blame] | 105 | spin_unlock(&common->cc_lock); |
| 106 | } |
Felix Fietkau | 898c914 | 2010-10-12 14:02:53 +0200 | [diff] [blame] | 107 | |
Luis R. Rodriguez | a91d75a | 2009-09-09 20:29:18 -0700 | [diff] [blame] | 108 | unlock: |
| 109 | spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
| 110 | } |
| 111 | |
| 112 | void ath9k_ps_restore(struct ath_softc *sc) |
| 113 | { |
Felix Fietkau | 898c914 | 2010-10-12 14:02:53 +0200 | [diff] [blame] | 114 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
Felix Fietkau | c6c539f | 2011-09-14 21:24:24 +0200 | [diff] [blame] | 115 | enum ath9k_power_mode mode; |
Luis R. Rodriguez | a91d75a | 2009-09-09 20:29:18 -0700 | [diff] [blame] | 116 | unsigned long flags; |
Sujith Manoharan | ad12886 | 2012-04-24 10:23:20 +0530 | [diff] [blame] | 117 | bool reset; |
Luis R. Rodriguez | a91d75a | 2009-09-09 20:29:18 -0700 | [diff] [blame] | 118 | |
| 119 | spin_lock_irqsave(&sc->sc_pm_lock, flags); |
| 120 | if (--sc->ps_usecount != 0) |
| 121 | goto unlock; |
| 122 | |
Sujith Manoharan | ad12886 | 2012-04-24 10:23:20 +0530 | [diff] [blame] | 123 | if (sc->ps_idle) { |
| 124 | ath9k_hw_setrxabort(sc->sc_ah, 1); |
| 125 | ath9k_hw_stopdmarecv(sc->sc_ah, &reset); |
Felix Fietkau | c6c539f | 2011-09-14 21:24:24 +0200 | [diff] [blame] | 126 | mode = ATH9K_PM_FULL_SLEEP; |
Sujith Manoharan | ad12886 | 2012-04-24 10:23:20 +0530 | [diff] [blame] | 127 | } else if (sc->ps_enabled && |
| 128 | !(sc->ps_flags & (PS_WAIT_FOR_BEACON | |
| 129 | PS_WAIT_FOR_CAB | |
| 130 | PS_WAIT_FOR_PSPOLL_DATA | |
| 131 | PS_WAIT_FOR_TX_ACK))) { |
Felix Fietkau | c6c539f | 2011-09-14 21:24:24 +0200 | [diff] [blame] | 132 | mode = ATH9K_PM_NETWORK_SLEEP; |
Rajkumar Manoharan | 08d4df4 | 2012-07-01 19:53:54 +0530 | [diff] [blame] | 133 | if (ath9k_hw_btcoex_is_enabled(sc->sc_ah)) |
| 134 | ath9k_btcoex_stop_gen_timer(sc); |
Sujith Manoharan | ad12886 | 2012-04-24 10:23:20 +0530 | [diff] [blame] | 135 | } else { |
Felix Fietkau | c6c539f | 2011-09-14 21:24:24 +0200 | [diff] [blame] | 136 | goto unlock; |
Sujith Manoharan | ad12886 | 2012-04-24 10:23:20 +0530 | [diff] [blame] | 137 | } |
Felix Fietkau | c6c539f | 2011-09-14 21:24:24 +0200 | [diff] [blame] | 138 | |
| 139 | spin_lock(&common->cc_lock); |
| 140 | ath_hw_cycle_counters_update(common); |
| 141 | spin_unlock(&common->cc_lock); |
| 142 | |
Felix Fietkau | 1a8f0d39 | 2011-09-22 08:04:32 -0600 | [diff] [blame] | 143 | ath9k_hw_setpower(sc->sc_ah, mode); |
Luis R. Rodriguez | a91d75a | 2009-09-09 20:29:18 -0700 | [diff] [blame] | 144 | |
| 145 | unlock: |
| 146 | spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
| 147 | } |
| 148 | |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 149 | static void __ath_cancel_work(struct ath_softc *sc) |
| 150 | { |
| 151 | cancel_work_sync(&sc->paprd_work); |
| 152 | cancel_work_sync(&sc->hw_check_work); |
| 153 | cancel_delayed_work_sync(&sc->tx_complete_work); |
| 154 | cancel_delayed_work_sync(&sc->hw_pll_work); |
Sujith Manoharan | fad29cd | 2012-06-25 13:54:22 +0530 | [diff] [blame] | 155 | |
Sujith Manoharan | bf52592 | 2012-06-27 14:15:59 +0530 | [diff] [blame] | 156 | #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT |
Sujith Manoharan | fad29cd | 2012-06-25 13:54:22 +0530 | [diff] [blame] | 157 | if (ath9k_hw_mci_is_enabled(sc->sc_ah)) |
| 158 | cancel_work_sync(&sc->mci_work); |
Sujith Manoharan | bf52592 | 2012-06-27 14:15:59 +0530 | [diff] [blame] | 159 | #endif |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 160 | } |
| 161 | |
| 162 | static void ath_cancel_work(struct ath_softc *sc) |
| 163 | { |
| 164 | __ath_cancel_work(sc); |
| 165 | cancel_work_sync(&sc->hw_reset_work); |
| 166 | } |
| 167 | |
Sujith Manoharan | af68aba | 2012-06-04 20:23:43 +0530 | [diff] [blame] | 168 | static void ath_restart_work(struct ath_softc *sc) |
| 169 | { |
| 170 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| 171 | |
| 172 | ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0); |
| 173 | |
Gabor Juhos | c12b602 | 2012-07-03 19:13:32 +0200 | [diff] [blame^] | 174 | if (AR_SREV_9340(sc->sc_ah) || AR_SREV_9485(sc->sc_ah) || |
| 175 | AR_SREV_9550(sc->sc_ah)) |
Sujith Manoharan | af68aba | 2012-06-04 20:23:43 +0530 | [diff] [blame] | 176 | ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, |
| 177 | msecs_to_jiffies(ATH_PLL_WORK_INTERVAL)); |
| 178 | |
| 179 | ath_start_rx_poll(sc, 3); |
| 180 | |
| 181 | if (!common->disable_ani) |
| 182 | ath_start_ani(common); |
| 183 | } |
| 184 | |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 185 | static bool ath_prepare_reset(struct ath_softc *sc, bool retry_tx, bool flush) |
| 186 | { |
| 187 | struct ath_hw *ah = sc->sc_ah; |
| 188 | struct ath_common *common = ath9k_hw_common(ah); |
Felix Fietkau | ceea2a5 | 2012-05-24 14:32:19 +0200 | [diff] [blame] | 189 | bool ret = true; |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 190 | |
| 191 | ieee80211_stop_queues(sc->hw); |
| 192 | |
| 193 | sc->hw_busy_count = 0; |
| 194 | del_timer_sync(&common->ani.timer); |
Rajkumar Manoharan | 01e1891 | 2012-03-15 05:34:27 +0530 | [diff] [blame] | 195 | del_timer_sync(&sc->rx_poll_timer); |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 196 | |
| 197 | ath9k_debug_samp_bb_mac(sc); |
| 198 | ath9k_hw_disable_interrupts(ah); |
| 199 | |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 200 | if (!ath_stoprecv(sc)) |
| 201 | ret = false; |
| 202 | |
Felix Fietkau | ceea2a5 | 2012-05-24 14:32:19 +0200 | [diff] [blame] | 203 | if (!ath_drain_all_txq(sc, retry_tx)) |
| 204 | ret = false; |
| 205 | |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 206 | if (!flush) { |
| 207 | if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) |
Felix Fietkau | 3483288 | 2011-09-14 21:23:03 +0200 | [diff] [blame] | 208 | ath_rx_tasklet(sc, 1, true); |
| 209 | ath_rx_tasklet(sc, 1, false); |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 210 | } else { |
| 211 | ath_flushrecv(sc); |
| 212 | } |
| 213 | |
| 214 | return ret; |
| 215 | } |
| 216 | |
| 217 | static bool ath_complete_reset(struct ath_softc *sc, bool start) |
| 218 | { |
| 219 | struct ath_hw *ah = sc->sc_ah; |
| 220 | struct ath_common *common = ath9k_hw_common(ah); |
Sujith Manoharan | 196fb86 | 2012-06-04 20:24:13 +0530 | [diff] [blame] | 221 | unsigned long flags; |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 222 | |
| 223 | if (ath_startrecv(sc) != 0) { |
| 224 | ath_err(common, "Unable to restart recv logic\n"); |
| 225 | return false; |
| 226 | } |
| 227 | |
| 228 | ath9k_cmn_update_txpow(ah, sc->curtxpow, |
| 229 | sc->config.txpowlimit, &sc->curtxpow); |
Sujith Manoharan | b74713d | 2012-06-04 20:24:01 +0530 | [diff] [blame] | 230 | |
| 231 | clear_bit(SC_OP_HW_RESET, &sc->sc_flags); |
Felix Fietkau | 72d874c | 2011-10-08 20:06:19 +0200 | [diff] [blame] | 232 | ath9k_hw_set_interrupts(ah); |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 233 | ath9k_hw_enable_interrupts(ah); |
| 234 | |
Sujith Manoharan | 4cb54fa | 2012-06-04 16:27:52 +0530 | [diff] [blame] | 235 | if (!(sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) && start) { |
Sujith Manoharan | 196fb86 | 2012-06-04 20:24:13 +0530 | [diff] [blame] | 236 | if (!test_bit(SC_OP_BEACONS, &sc->sc_flags)) |
| 237 | goto work; |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 238 | |
Sujith Manoharan | 196fb86 | 2012-06-04 20:24:13 +0530 | [diff] [blame] | 239 | ath_set_beacon(sc); |
| 240 | |
| 241 | if (ah->opmode == NL80211_IFTYPE_STATION && |
| 242 | test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags)) { |
| 243 | spin_lock_irqsave(&sc->sc_pm_lock, flags); |
| 244 | sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON; |
| 245 | spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
| 246 | } |
| 247 | work: |
Sujith Manoharan | af68aba | 2012-06-04 20:23:43 +0530 | [diff] [blame] | 248 | ath_restart_work(sc); |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 249 | } |
| 250 | |
Sujith Manoharan | 8da0783 | 2012-06-04 20:23:49 +0530 | [diff] [blame] | 251 | if ((ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) && sc->ant_rx != 3) |
| 252 | ath_ant_comb_update(sc); |
Felix Fietkau | 43c3528 | 2011-09-03 01:40:27 +0200 | [diff] [blame] | 253 | |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 254 | ieee80211_wake_queues(sc->hw); |
| 255 | |
| 256 | return true; |
| 257 | } |
| 258 | |
| 259 | static int ath_reset_internal(struct ath_softc *sc, struct ath9k_channel *hchan, |
| 260 | bool retry_tx) |
| 261 | { |
| 262 | struct ath_hw *ah = sc->sc_ah; |
| 263 | struct ath_common *common = ath9k_hw_common(ah); |
| 264 | struct ath9k_hw_cal_data *caldata = NULL; |
| 265 | bool fastcc = true; |
| 266 | bool flush = false; |
| 267 | int r; |
| 268 | |
| 269 | __ath_cancel_work(sc); |
| 270 | |
| 271 | spin_lock_bh(&sc->sc_pcu_lock); |
| 272 | |
Sujith Manoharan | 4cb54fa | 2012-06-04 16:27:52 +0530 | [diff] [blame] | 273 | if (!(sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)) { |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 274 | fastcc = false; |
| 275 | caldata = &sc->caldata; |
| 276 | } |
| 277 | |
| 278 | if (!hchan) { |
| 279 | fastcc = false; |
| 280 | flush = true; |
| 281 | hchan = ah->curchan; |
| 282 | } |
| 283 | |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 284 | if (!ath_prepare_reset(sc, retry_tx, flush)) |
| 285 | fastcc = false; |
| 286 | |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 287 | ath_dbg(common, CONFIG, "Reset to %u MHz, HT40: %d fastcc: %d\n", |
Sujith Manoharan | feced20 | 2012-01-30 14:21:42 +0530 | [diff] [blame] | 288 | hchan->channel, IS_CHAN_HT40(hchan), fastcc); |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 289 | |
| 290 | r = ath9k_hw_reset(ah, hchan, caldata, fastcc); |
| 291 | if (r) { |
| 292 | ath_err(common, |
| 293 | "Unable to reset channel, reset status %d\n", r); |
| 294 | goto out; |
| 295 | } |
| 296 | |
| 297 | if (!ath_complete_reset(sc, true)) |
| 298 | r = -EIO; |
| 299 | |
| 300 | out: |
| 301 | spin_unlock_bh(&sc->sc_pcu_lock); |
| 302 | return r; |
| 303 | } |
| 304 | |
| 305 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 306 | /* |
| 307 | * Set/change channels. If the channel is really being changed, it's done |
| 308 | * by reseting the chip. To accomplish this we must first cleanup any pending |
| 309 | * DMA, then restart stuff. |
| 310 | */ |
Mohammed Shafi Shajakhan | 5595f11 | 2011-05-19 18:08:57 +0530 | [diff] [blame] | 311 | static int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw, |
Jouni Malinen | 0e2dedf | 2009-03-03 19:23:32 +0200 | [diff] [blame] | 312 | struct ath9k_channel *hchan) |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 313 | { |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 314 | int r; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 315 | |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 316 | if (test_bit(SC_OP_INVALID, &sc->sc_flags)) |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 317 | return -EIO; |
| 318 | |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 319 | r = ath_reset_internal(sc, hchan, false); |
Luis R. Rodriguez | 6a6733f | 2010-10-26 15:27:25 -0700 | [diff] [blame] | 320 | |
Gabor Juhos | 3989279 | 2009-06-15 17:49:09 +0200 | [diff] [blame] | 321 | return r; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 322 | } |
| 323 | |
Ben Greear | 7e1e386 | 2011-11-03 11:33:13 -0700 | [diff] [blame] | 324 | static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta, |
| 325 | struct ieee80211_vif *vif) |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 326 | { |
| 327 | struct ath_node *an; |
Sven Eckelmann | 313eb87 | 2012-06-25 07:15:22 +0200 | [diff] [blame] | 328 | u8 density; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 329 | an = (struct ath_node *)sta->drv_priv; |
| 330 | |
Ben Greear | 7f010c9 | 2011-01-09 23:11:49 -0800 | [diff] [blame] | 331 | #ifdef CONFIG_ATH9K_DEBUGFS |
| 332 | spin_lock(&sc->nodes_lock); |
| 333 | list_add(&an->list, &sc->nodes); |
| 334 | spin_unlock(&sc->nodes_lock); |
Felix Fietkau | 156369f | 2011-12-14 22:08:04 +0100 | [diff] [blame] | 335 | #endif |
Ben Greear | 7f010c9 | 2011-01-09 23:11:49 -0800 | [diff] [blame] | 336 | an->sta = sta; |
Ben Greear | 7e1e386 | 2011-11-03 11:33:13 -0700 | [diff] [blame] | 337 | an->vif = vif; |
Sujith Manoharan | 3d4e20f | 2012-03-14 14:40:58 +0530 | [diff] [blame] | 338 | |
Sujith Manoharan | a4d6367 | 2012-03-27 10:08:55 +0530 | [diff] [blame] | 339 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) { |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 340 | ath_tx_node_init(sc, an); |
Sujith | 9e98ac6 | 2009-07-23 15:32:34 +0530 | [diff] [blame] | 341 | an->maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR + |
Sujith | 87792ef | 2009-03-30 15:28:48 +0530 | [diff] [blame] | 342 | sta->ht_cap.ampdu_factor); |
Sven Eckelmann | 313eb87 | 2012-06-25 07:15:22 +0200 | [diff] [blame] | 343 | density = ath9k_parse_mpdudensity(sta->ht_cap.ampdu_density); |
| 344 | an->mpdudensity = density; |
Sujith | 87792ef | 2009-03-30 15:28:48 +0530 | [diff] [blame] | 345 | } |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 346 | } |
| 347 | |
| 348 | static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta) |
| 349 | { |
| 350 | struct ath_node *an = (struct ath_node *)sta->drv_priv; |
| 351 | |
Ben Greear | 7f010c9 | 2011-01-09 23:11:49 -0800 | [diff] [blame] | 352 | #ifdef CONFIG_ATH9K_DEBUGFS |
| 353 | spin_lock(&sc->nodes_lock); |
| 354 | list_del(&an->list); |
| 355 | spin_unlock(&sc->nodes_lock); |
| 356 | an->sta = NULL; |
| 357 | #endif |
| 358 | |
Sujith Manoharan | a4d6367 | 2012-03-27 10:08:55 +0530 | [diff] [blame] | 359 | if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 360 | ath_tx_node_cleanup(sc, an); |
| 361 | } |
| 362 | |
Sujith | 5562420 | 2010-01-08 10:36:02 +0530 | [diff] [blame] | 363 | void ath9k_tasklet(unsigned long data) |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 364 | { |
| 365 | struct ath_softc *sc = (struct ath_softc *)data; |
Luis R. Rodriguez | af03abe | 2009-09-09 02:33:11 -0700 | [diff] [blame] | 366 | struct ath_hw *ah = sc->sc_ah; |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 367 | struct ath_common *common = ath9k_hw_common(ah); |
Sujith Manoharan | 07c15a3 | 2012-06-04 20:24:07 +0530 | [diff] [blame] | 368 | unsigned long flags; |
Sujith | 17d7904 | 2009-02-09 13:27:03 +0530 | [diff] [blame] | 369 | u32 status = sc->intrstatus; |
Felix Fietkau | b5c80475 | 2010-04-15 17:38:48 -0400 | [diff] [blame] | 370 | u32 rxmask; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 371 | |
Felix Fietkau | e392700 | 2011-09-14 21:23:01 +0200 | [diff] [blame] | 372 | ath9k_ps_wakeup(sc); |
| 373 | spin_lock(&sc->sc_pcu_lock); |
| 374 | |
Rajkumar Manoharan | a4d86d9 | 2011-05-20 17:52:10 +0530 | [diff] [blame] | 375 | if ((status & ATH9K_INT_FATAL) || |
| 376 | (status & ATH9K_INT_BB_WATCHDOG)) { |
Felix Fietkau | 030d629 | 2011-10-07 02:28:13 +0200 | [diff] [blame] | 377 | #ifdef CONFIG_ATH9K_DEBUGFS |
| 378 | enum ath_reset_type type; |
| 379 | |
| 380 | if (status & ATH9K_INT_FATAL) |
| 381 | type = RESET_TYPE_FATAL_INT; |
| 382 | else |
| 383 | type = RESET_TYPE_BB_WATCHDOG; |
| 384 | |
| 385 | RESET_STAT_INC(sc, type); |
| 386 | #endif |
Sujith Manoharan | b74713d | 2012-06-04 20:24:01 +0530 | [diff] [blame] | 387 | set_bit(SC_OP_HW_RESET, &sc->sc_flags); |
Felix Fietkau | 236de51 | 2011-09-03 01:40:25 +0200 | [diff] [blame] | 388 | ieee80211_queue_work(sc->hw, &sc->hw_reset_work); |
Felix Fietkau | e392700 | 2011-09-14 21:23:01 +0200 | [diff] [blame] | 389 | goto out; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 390 | } |
| 391 | |
Sujith Manoharan | 07c15a3 | 2012-06-04 20:24:07 +0530 | [diff] [blame] | 392 | spin_lock_irqsave(&sc->sc_pm_lock, flags); |
Rajkumar Manoharan | 4105f80 | 2011-05-06 18:27:47 +0530 | [diff] [blame] | 393 | if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) { |
| 394 | /* |
| 395 | * TSF sync does not look correct; remain awake to sync with |
| 396 | * the next Beacon. |
| 397 | */ |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 398 | ath_dbg(common, PS, "TSFOOR - Sync with next Beacon\n"); |
Rajkumar Manoharan | e8fe733 | 2011-08-05 18:59:41 +0530 | [diff] [blame] | 399 | sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC; |
Rajkumar Manoharan | 4105f80 | 2011-05-06 18:27:47 +0530 | [diff] [blame] | 400 | } |
Sujith Manoharan | 07c15a3 | 2012-06-04 20:24:07 +0530 | [diff] [blame] | 401 | spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
Rajkumar Manoharan | 4105f80 | 2011-05-06 18:27:47 +0530 | [diff] [blame] | 402 | |
Felix Fietkau | b5c80475 | 2010-04-15 17:38:48 -0400 | [diff] [blame] | 403 | if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) |
| 404 | rxmask = (ATH9K_INT_RXHP | ATH9K_INT_RXLP | ATH9K_INT_RXEOL | |
| 405 | ATH9K_INT_RXORN); |
| 406 | else |
| 407 | rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN); |
| 408 | |
| 409 | if (status & rxmask) { |
Felix Fietkau | b5c80475 | 2010-04-15 17:38:48 -0400 | [diff] [blame] | 410 | /* Check for high priority Rx first */ |
| 411 | if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) && |
| 412 | (status & ATH9K_INT_RXHP)) |
| 413 | ath_rx_tasklet(sc, 0, true); |
| 414 | |
| 415 | ath_rx_tasklet(sc, 0, false); |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 416 | } |
| 417 | |
Vasanthakumar Thiagarajan | e500324 | 2010-04-15 17:39:36 -0400 | [diff] [blame] | 418 | if (status & ATH9K_INT_TX) { |
| 419 | if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) |
| 420 | ath_tx_edma_tasklet(sc); |
| 421 | else |
| 422 | ath_tx_tasklet(sc); |
| 423 | } |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 424 | |
Sujith Manoharan | 56ca0db | 2012-02-22 12:40:32 +0530 | [diff] [blame] | 425 | ath9k_btcoex_handle_interrupt(sc, status); |
Mohammed Shafi Shajakhan | 19686dd | 2011-11-30 10:41:28 +0530 | [diff] [blame] | 426 | |
Felix Fietkau | e392700 | 2011-09-14 21:23:01 +0200 | [diff] [blame] | 427 | out: |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 428 | /* re-enable hardware interrupt */ |
Felix Fietkau | 4df3071 | 2010-11-08 20:54:47 +0100 | [diff] [blame] | 429 | ath9k_hw_enable_interrupts(ah); |
Luis R. Rodriguez | 6a6733f | 2010-10-26 15:27:25 -0700 | [diff] [blame] | 430 | |
Senthil Balasubramanian | 52671e4 | 2010-12-23 21:06:57 +0530 | [diff] [blame] | 431 | spin_unlock(&sc->sc_pcu_lock); |
Vasanthakumar Thiagarajan | 153e080 | 2009-05-15 02:47:16 -0400 | [diff] [blame] | 432 | ath9k_ps_restore(sc); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 433 | } |
| 434 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 435 | irqreturn_t ath_isr(int irq, void *dev) |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 436 | { |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 437 | #define SCHED_INTR ( \ |
| 438 | ATH9K_INT_FATAL | \ |
Rajkumar Manoharan | a4d86d9 | 2011-05-20 17:52:10 +0530 | [diff] [blame] | 439 | ATH9K_INT_BB_WATCHDOG | \ |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 440 | ATH9K_INT_RXORN | \ |
| 441 | ATH9K_INT_RXEOL | \ |
| 442 | ATH9K_INT_RX | \ |
Felix Fietkau | b5c80475 | 2010-04-15 17:38:48 -0400 | [diff] [blame] | 443 | ATH9K_INT_RXLP | \ |
| 444 | ATH9K_INT_RXHP | \ |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 445 | ATH9K_INT_TX | \ |
| 446 | ATH9K_INT_BMISS | \ |
| 447 | ATH9K_INT_CST | \ |
Vasanthakumar Thiagarajan | ebb8e1d | 2009-09-01 17:46:32 +0530 | [diff] [blame] | 448 | ATH9K_INT_TSFOOR | \ |
Mohammed Shafi Shajakhan | 40dc539 | 2011-11-30 10:41:18 +0530 | [diff] [blame] | 449 | ATH9K_INT_GENTIMER | \ |
| 450 | ATH9K_INT_MCI) |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 451 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 452 | struct ath_softc *sc = dev; |
Sujith | cbe61d8a | 2009-02-09 13:27:12 +0530 | [diff] [blame] | 453 | struct ath_hw *ah = sc->sc_ah; |
Felix Fietkau | b5bfc56 | 2010-10-08 22:13:53 +0200 | [diff] [blame] | 454 | struct ath_common *common = ath9k_hw_common(ah); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 455 | enum ath9k_int status; |
| 456 | bool sched = false; |
| 457 | |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 458 | /* |
| 459 | * The hardware is not ready/present, don't |
| 460 | * touch anything. Note this can happen early |
| 461 | * on if the IRQ is shared. |
| 462 | */ |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 463 | if (test_bit(SC_OP_INVALID, &sc->sc_flags)) |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 464 | return IRQ_NONE; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 465 | |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 466 | /* shared irq, not for us */ |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 467 | |
Vasanthakumar Thiagarajan | 153e080 | 2009-05-15 02:47:16 -0400 | [diff] [blame] | 468 | if (!ath9k_hw_intrpend(ah)) |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 469 | return IRQ_NONE; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 470 | |
Sujith Manoharan | b74713d | 2012-06-04 20:24:01 +0530 | [diff] [blame] | 471 | if(test_bit(SC_OP_HW_RESET, &sc->sc_flags)) |
| 472 | return IRQ_HANDLED; |
| 473 | |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 474 | /* |
| 475 | * Figure out the reason(s) for the interrupt. Note |
| 476 | * that the hal returns a pseudo-ISR that may include |
| 477 | * bits we haven't explicitly enabled so we mask the |
| 478 | * value to insure we only process bits we requested. |
| 479 | */ |
| 480 | ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */ |
Pavel Roskin | 3069168 | 2010-03-31 18:05:31 -0400 | [diff] [blame] | 481 | status &= ah->imask; /* discard unasked-for bits */ |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 482 | |
| 483 | /* |
| 484 | * If there are no status bits set, then this interrupt was not |
| 485 | * for me (should have been caught above). |
| 486 | */ |
Vasanthakumar Thiagarajan | 153e080 | 2009-05-15 02:47:16 -0400 | [diff] [blame] | 487 | if (!status) |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 488 | return IRQ_NONE; |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 489 | |
| 490 | /* Cache the status */ |
| 491 | sc->intrstatus = status; |
| 492 | |
| 493 | if (status & SCHED_INTR) |
| 494 | sched = true; |
| 495 | |
| 496 | /* |
| 497 | * If a FATAL or RXORN interrupt is received, we have to reset the |
| 498 | * chip immediately. |
| 499 | */ |
Felix Fietkau | b5c80475 | 2010-04-15 17:38:48 -0400 | [diff] [blame] | 500 | if ((status & ATH9K_INT_FATAL) || ((status & ATH9K_INT_RXORN) && |
| 501 | !(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA))) |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 502 | goto chip_reset; |
| 503 | |
Luis R. Rodriguez | 08578b8 | 2010-05-13 13:33:44 -0400 | [diff] [blame] | 504 | if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) && |
| 505 | (status & ATH9K_INT_BB_WATCHDOG)) { |
Felix Fietkau | b5bfc56 | 2010-10-08 22:13:53 +0200 | [diff] [blame] | 506 | |
| 507 | spin_lock(&common->cc_lock); |
| 508 | ath_hw_cycle_counters_update(common); |
Luis R. Rodriguez | 08578b8 | 2010-05-13 13:33:44 -0400 | [diff] [blame] | 509 | ar9003_hw_bb_watchdog_dbg_info(ah); |
Felix Fietkau | b5bfc56 | 2010-10-08 22:13:53 +0200 | [diff] [blame] | 510 | spin_unlock(&common->cc_lock); |
| 511 | |
Luis R. Rodriguez | 08578b8 | 2010-05-13 13:33:44 -0400 | [diff] [blame] | 512 | goto chip_reset; |
| 513 | } |
| 514 | |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 515 | if (status & ATH9K_INT_SWBA) |
| 516 | tasklet_schedule(&sc->bcon_tasklet); |
| 517 | |
| 518 | if (status & ATH9K_INT_TXURN) |
| 519 | ath9k_hw_updatetxtriglevel(ah, true); |
| 520 | |
Rajkumar Manoharan | 0682c9b | 2011-08-13 10:28:09 +0530 | [diff] [blame] | 521 | if (status & ATH9K_INT_RXEOL) { |
| 522 | ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN); |
Felix Fietkau | 72d874c | 2011-10-08 20:06:19 +0200 | [diff] [blame] | 523 | ath9k_hw_set_interrupts(ah); |
Felix Fietkau | b5c80475 | 2010-04-15 17:38:48 -0400 | [diff] [blame] | 524 | } |
| 525 | |
Vasanthakumar Thiagarajan | 153e080 | 2009-05-15 02:47:16 -0400 | [diff] [blame] | 526 | if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) |
| 527 | if (status & ATH9K_INT_TIM_TIMER) { |
Luis R. Rodriguez | ff9f0b6 | 2010-12-07 15:13:22 -0800 | [diff] [blame] | 528 | if (ATH_DBG_WARN_ON_ONCE(sc->ps_idle)) |
| 529 | goto chip_reset; |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 530 | /* Clear RxAbort bit so that we can |
| 531 | * receive frames */ |
Luis R. Rodriguez | 9ecdef4 | 2009-09-09 21:10:09 -0700 | [diff] [blame] | 532 | ath9k_setpower(sc, ATH9K_PM_AWAKE); |
Sujith Manoharan | 07c15a3 | 2012-06-04 20:24:07 +0530 | [diff] [blame] | 533 | spin_lock(&sc->sc_pm_lock); |
Vasanthakumar Thiagarajan | 153e080 | 2009-05-15 02:47:16 -0400 | [diff] [blame] | 534 | ath9k_hw_setrxabort(sc->sc_ah, 0); |
Sujith | 1b04b93 | 2010-01-08 10:36:05 +0530 | [diff] [blame] | 535 | sc->ps_flags |= PS_WAIT_FOR_BEACON; |
Sujith Manoharan | 07c15a3 | 2012-06-04 20:24:07 +0530 | [diff] [blame] | 536 | spin_unlock(&sc->sc_pm_lock); |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 537 | } |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 538 | |
| 539 | chip_reset: |
| 540 | |
Sujith | 817e11d | 2008-12-07 21:42:44 +0530 | [diff] [blame] | 541 | ath_debug_stat_interrupt(sc, status); |
| 542 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 543 | if (sched) { |
Felix Fietkau | 4df3071 | 2010-11-08 20:54:47 +0100 | [diff] [blame] | 544 | /* turn off every interrupt */ |
| 545 | ath9k_hw_disable_interrupts(ah); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 546 | tasklet_schedule(&sc->intr_tq); |
| 547 | } |
| 548 | |
| 549 | return IRQ_HANDLED; |
Sujith | 063d8be | 2009-03-30 15:28:49 +0530 | [diff] [blame] | 550 | |
| 551 | #undef SCHED_INTR |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 552 | } |
| 553 | |
Felix Fietkau | 236de51 | 2011-09-03 01:40:25 +0200 | [diff] [blame] | 554 | static int ath_reset(struct ath_softc *sc, bool retry_tx) |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 555 | { |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 556 | int r; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 557 | |
Felix Fietkau | 783cd01 | 2011-01-21 18:52:38 +0100 | [diff] [blame] | 558 | ath9k_ps_wakeup(sc); |
Luis R. Rodriguez | 6a6733f | 2010-10-26 15:27:25 -0700 | [diff] [blame] | 559 | |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 560 | r = ath_reset_internal(sc, NULL, retry_tx); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 561 | |
| 562 | if (retry_tx) { |
| 563 | int i; |
| 564 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) { |
| 565 | if (ATH_TXQ_SETUP(sc, i)) { |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 566 | spin_lock_bh(&sc->tx.txq[i].axq_lock); |
| 567 | ath_txq_schedule(sc, &sc->tx.txq[i]); |
| 568 | spin_unlock_bh(&sc->tx.txq[i].axq_lock); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 569 | } |
| 570 | } |
| 571 | } |
| 572 | |
Felix Fietkau | 783cd01 | 2011-01-21 18:52:38 +0100 | [diff] [blame] | 573 | ath9k_ps_restore(sc); |
Sujith | 2ab81d4 | 2009-12-14 16:34:56 +0530 | [diff] [blame] | 574 | |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 575 | return r; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 576 | } |
| 577 | |
Felix Fietkau | 236de51 | 2011-09-03 01:40:25 +0200 | [diff] [blame] | 578 | void ath_reset_work(struct work_struct *work) |
| 579 | { |
| 580 | struct ath_softc *sc = container_of(work, struct ath_softc, hw_reset_work); |
| 581 | |
Felix Fietkau | 236de51 | 2011-09-03 01:40:25 +0200 | [diff] [blame] | 582 | ath_reset(sc, true); |
Felix Fietkau | 236de51 | 2011-09-03 01:40:25 +0200 | [diff] [blame] | 583 | } |
| 584 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 585 | /**********************/ |
| 586 | /* mac80211 callbacks */ |
| 587 | /**********************/ |
| 588 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 589 | static int ath9k_start(struct ieee80211_hw *hw) |
| 590 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 591 | struct ath_softc *sc = hw->priv; |
Luis R. Rodriguez | af03abe | 2009-09-09 02:33:11 -0700 | [diff] [blame] | 592 | struct ath_hw *ah = sc->sc_ah; |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 593 | struct ath_common *common = ath9k_hw_common(ah); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 594 | struct ieee80211_channel *curchan = hw->conf.channel; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 595 | struct ath9k_channel *init_channel; |
Vasanthakumar Thiagarajan | 82880a7 | 2009-06-13 14:50:24 +0530 | [diff] [blame] | 596 | int r; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 597 | |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 598 | ath_dbg(common, CONFIG, |
Joe Perches | 226afe6 | 2010-12-02 19:12:37 -0800 | [diff] [blame] | 599 | "Starting driver with initial channel: %d MHz\n", |
| 600 | curchan->center_freq); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 601 | |
Felix Fietkau | f62d816 | 2011-03-25 17:43:41 +0100 | [diff] [blame] | 602 | ath9k_ps_wakeup(sc); |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 603 | mutex_lock(&sc->mutex); |
| 604 | |
Rajkumar Manoharan | c344c9c | 2011-01-31 23:47:43 +0530 | [diff] [blame] | 605 | init_channel = ath9k_cmn_get_curchannel(hw, ah); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 606 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 607 | /* Reset SERDES registers */ |
Stanislaw Gruszka | 84c87dc | 2011-08-05 13:10:32 +0200 | [diff] [blame] | 608 | ath9k_hw_configpcipowersave(ah, false); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 609 | |
| 610 | /* |
| 611 | * The basic interface to setting the hardware in a good |
| 612 | * state is ``reset''. On return the hardware is known to |
| 613 | * be powered up and with interrupts disabled. This must |
| 614 | * be followed by initialization of the appropriate bits |
| 615 | * and then setup of the interrupt mask. |
| 616 | */ |
Luis R. Rodriguez | 4bdd1e9 | 2010-10-26 15:27:24 -0700 | [diff] [blame] | 617 | spin_lock_bh(&sc->sc_pcu_lock); |
Felix Fietkau | c0c1174 | 2011-11-16 13:08:41 +0100 | [diff] [blame] | 618 | |
| 619 | atomic_set(&ah->intr_ref_cnt, -1); |
| 620 | |
Felix Fietkau | 20bd2a0 | 2010-07-31 00:12:00 +0200 | [diff] [blame] | 621 | r = ath9k_hw_reset(ah, init_channel, ah->caldata, false); |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 622 | if (r) { |
Joe Perches | 3800276 | 2010-12-02 19:12:36 -0800 | [diff] [blame] | 623 | ath_err(common, |
| 624 | "Unable to reset hardware; reset status %d (freq %u MHz)\n", |
| 625 | r, curchan->center_freq); |
Luis R. Rodriguez | 4bdd1e9 | 2010-10-26 15:27:24 -0700 | [diff] [blame] | 626 | spin_unlock_bh(&sc->sc_pcu_lock); |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 627 | goto mutex_unlock; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 628 | } |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 629 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 630 | /* Setup our intr mask. */ |
Felix Fietkau | b5c80475 | 2010-04-15 17:38:48 -0400 | [diff] [blame] | 631 | ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL | |
| 632 | ATH9K_INT_RXORN | ATH9K_INT_FATAL | |
| 633 | ATH9K_INT_GLOBAL; |
| 634 | |
| 635 | if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) |
Luis R. Rodriguez | 08578b8 | 2010-05-13 13:33:44 -0400 | [diff] [blame] | 636 | ah->imask |= ATH9K_INT_RXHP | |
| 637 | ATH9K_INT_RXLP | |
| 638 | ATH9K_INT_BB_WATCHDOG; |
Felix Fietkau | b5c80475 | 2010-04-15 17:38:48 -0400 | [diff] [blame] | 639 | else |
| 640 | ah->imask |= ATH9K_INT_RX; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 641 | |
Felix Fietkau | 364734f | 2010-09-14 20:22:44 +0200 | [diff] [blame] | 642 | ah->imask |= ATH9K_INT_GTT; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 643 | |
Luis R. Rodriguez | af03abe | 2009-09-09 02:33:11 -0700 | [diff] [blame] | 644 | if (ah->caps.hw_caps & ATH9K_HW_CAP_HT) |
Pavel Roskin | 3069168 | 2010-03-31 18:05:31 -0400 | [diff] [blame] | 645 | ah->imask |= ATH9K_INT_CST; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 646 | |
Sujith Manoharan | e270e77 | 2012-06-04 16:27:19 +0530 | [diff] [blame] | 647 | ath_mci_enable(sc); |
Mohammed Shafi Shajakhan | 40dc539 | 2011-11-30 10:41:18 +0530 | [diff] [blame] | 648 | |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 649 | clear_bit(SC_OP_INVALID, &sc->sc_flags); |
Rajkumar Manoharan | 5f841b4 | 2010-10-27 18:31:15 +0530 | [diff] [blame] | 650 | sc->sc_ah->is_monitoring = false; |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 651 | |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 652 | if (!ath_complete_reset(sc, false)) { |
| 653 | r = -EIO; |
| 654 | spin_unlock_bh(&sc->sc_pcu_lock); |
| 655 | goto mutex_unlock; |
| 656 | } |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 657 | |
Felix Fietkau | c0c1174 | 2011-11-16 13:08:41 +0100 | [diff] [blame] | 658 | if (ah->led_pin >= 0) { |
| 659 | ath9k_hw_cfg_output(ah, ah->led_pin, |
| 660 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); |
| 661 | ath9k_hw_set_gpio(ah, ah->led_pin, 0); |
| 662 | } |
| 663 | |
| 664 | /* |
| 665 | * Reset key cache to sane defaults (all entries cleared) instead of |
| 666 | * semi-random values after suspend/resume. |
| 667 | */ |
| 668 | ath9k_cmn_init_crypto(sc->sc_ah); |
| 669 | |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 670 | spin_unlock_bh(&sc->sc_pcu_lock); |
Senthil Balasubramanian | 164ace3 | 2009-07-14 20:17:09 -0400 | [diff] [blame] | 671 | |
Vasanthakumar Thiagarajan | 8060e16 | 2010-12-06 04:27:42 -0800 | [diff] [blame] | 672 | if (ah->caps.pcie_lcr_extsync_en && common->bus_ops->extn_synch_en) |
| 673 | common->bus_ops->extn_synch_en(common); |
| 674 | |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 675 | mutex_unlock: |
| 676 | mutex_unlock(&sc->mutex); |
| 677 | |
Felix Fietkau | f62d816 | 2011-03-25 17:43:41 +0100 | [diff] [blame] | 678 | ath9k_ps_restore(sc); |
| 679 | |
Luis R. Rodriguez | ae8d285 | 2008-12-23 15:58:40 -0800 | [diff] [blame] | 680 | return r; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 681 | } |
| 682 | |
Johannes Berg | 7bb45683 | 2011-02-24 14:42:06 +0100 | [diff] [blame] | 683 | static void ath9k_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 684 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 685 | struct ath_softc *sc = hw->priv; |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 686 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
Sujith | 528f0c6 | 2008-10-29 10:14:26 +0530 | [diff] [blame] | 687 | struct ath_tx_control txctl; |
Benoit Papillault | 1bc1488 | 2009-11-24 15:49:18 +0100 | [diff] [blame] | 688 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
Sujith Manoharan | 07c15a3 | 2012-06-04 20:24:07 +0530 | [diff] [blame] | 689 | unsigned long flags; |
Sujith | 528f0c6 | 2008-10-29 10:14:26 +0530 | [diff] [blame] | 690 | |
Gabor Juhos | 9614832 | 2009-07-24 17:27:21 +0200 | [diff] [blame] | 691 | if (sc->ps_enabled) { |
Jouni Malinen | dc8c458 | 2009-05-19 17:01:42 +0300 | [diff] [blame] | 692 | /* |
| 693 | * mac80211 does not set PM field for normal data frames, so we |
| 694 | * need to update that based on the current PS mode. |
| 695 | */ |
| 696 | if (ieee80211_is_data(hdr->frame_control) && |
| 697 | !ieee80211_is_nullfunc(hdr->frame_control) && |
| 698 | !ieee80211_has_pm(hdr->frame_control)) { |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 699 | ath_dbg(common, PS, |
Joe Perches | 226afe6 | 2010-12-02 19:12:37 -0800 | [diff] [blame] | 700 | "Add PM=1 for a TX frame while in PS mode\n"); |
Jouni Malinen | dc8c458 | 2009-05-19 17:01:42 +0300 | [diff] [blame] | 701 | hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); |
| 702 | } |
| 703 | } |
| 704 | |
Sujith Manoharan | ad12886 | 2012-04-24 10:23:20 +0530 | [diff] [blame] | 705 | if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP)) { |
Jouni Malinen | 9a23f9c | 2009-05-19 17:01:38 +0300 | [diff] [blame] | 706 | /* |
| 707 | * We are using PS-Poll and mac80211 can request TX while in |
| 708 | * power save mode. Need to wake up hardware for the TX to be |
| 709 | * completed and if needed, also for RX of buffered frames. |
| 710 | */ |
Jouni Malinen | 9a23f9c | 2009-05-19 17:01:38 +0300 | [diff] [blame] | 711 | ath9k_ps_wakeup(sc); |
Sujith Manoharan | 07c15a3 | 2012-06-04 20:24:07 +0530 | [diff] [blame] | 712 | spin_lock_irqsave(&sc->sc_pm_lock, flags); |
Vasanthakumar Thiagarajan | fdf7662 | 2010-05-17 18:57:55 -0700 | [diff] [blame] | 713 | if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) |
| 714 | ath9k_hw_setrxabort(sc->sc_ah, 0); |
Jouni Malinen | 9a23f9c | 2009-05-19 17:01:38 +0300 | [diff] [blame] | 715 | if (ieee80211_is_pspoll(hdr->frame_control)) { |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 716 | ath_dbg(common, PS, |
Joe Perches | 226afe6 | 2010-12-02 19:12:37 -0800 | [diff] [blame] | 717 | "Sending PS-Poll to pick a buffered frame\n"); |
Sujith | 1b04b93 | 2010-01-08 10:36:05 +0530 | [diff] [blame] | 718 | sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA; |
Jouni Malinen | 9a23f9c | 2009-05-19 17:01:38 +0300 | [diff] [blame] | 719 | } else { |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 720 | ath_dbg(common, PS, "Wake up to complete TX\n"); |
Sujith | 1b04b93 | 2010-01-08 10:36:05 +0530 | [diff] [blame] | 721 | sc->ps_flags |= PS_WAIT_FOR_TX_ACK; |
Jouni Malinen | 9a23f9c | 2009-05-19 17:01:38 +0300 | [diff] [blame] | 722 | } |
| 723 | /* |
| 724 | * The actual restore operation will happen only after |
Sujith Manoharan | ad12886 | 2012-04-24 10:23:20 +0530 | [diff] [blame] | 725 | * the ps_flags bit is cleared. We are just dropping |
Jouni Malinen | 9a23f9c | 2009-05-19 17:01:38 +0300 | [diff] [blame] | 726 | * the ps_usecount here. |
| 727 | */ |
Sujith Manoharan | 07c15a3 | 2012-06-04 20:24:07 +0530 | [diff] [blame] | 728 | spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
Jouni Malinen | 9a23f9c | 2009-05-19 17:01:38 +0300 | [diff] [blame] | 729 | ath9k_ps_restore(sc); |
| 730 | } |
| 731 | |
Sujith Manoharan | ad12886 | 2012-04-24 10:23:20 +0530 | [diff] [blame] | 732 | /* |
| 733 | * Cannot tx while the hardware is in full sleep, it first needs a full |
| 734 | * chip reset to recover from that |
| 735 | */ |
| 736 | if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_FULL_SLEEP)) { |
| 737 | ath_err(common, "TX while HW is in FULL_SLEEP mode\n"); |
| 738 | goto exit; |
| 739 | } |
| 740 | |
Sujith | 528f0c6 | 2008-10-29 10:14:26 +0530 | [diff] [blame] | 741 | memset(&txctl, 0, sizeof(struct ath_tx_control)); |
Felix Fietkau | 066dae9 | 2010-11-07 14:59:39 +0100 | [diff] [blame] | 742 | txctl.txq = sc->tx.txq_map[skb_get_queue_mapping(skb)]; |
Sujith | 528f0c6 | 2008-10-29 10:14:26 +0530 | [diff] [blame] | 743 | |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 744 | ath_dbg(common, XMIT, "transmitting packet, skb: %p\n", skb); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 745 | |
Jouni Malinen | c52f33d | 2009-03-03 19:23:29 +0200 | [diff] [blame] | 746 | if (ath_tx_start(hw, skb, &txctl) != 0) { |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 747 | ath_dbg(common, XMIT, "TX failed\n"); |
Ben Greear | a5a0bca | 2012-04-03 09:16:55 -0700 | [diff] [blame] | 748 | TX_STAT_INC(txctl.txq->axq_qnum, txfailed); |
Sujith | 528f0c6 | 2008-10-29 10:14:26 +0530 | [diff] [blame] | 749 | goto exit; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 750 | } |
| 751 | |
Johannes Berg | 7bb45683 | 2011-02-24 14:42:06 +0100 | [diff] [blame] | 752 | return; |
Sujith | 528f0c6 | 2008-10-29 10:14:26 +0530 | [diff] [blame] | 753 | exit: |
| 754 | dev_kfree_skb_any(skb); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 755 | } |
| 756 | |
| 757 | static void ath9k_stop(struct ieee80211_hw *hw) |
| 758 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 759 | struct ath_softc *sc = hw->priv; |
Luis R. Rodriguez | af03abe | 2009-09-09 02:33:11 -0700 | [diff] [blame] | 760 | struct ath_hw *ah = sc->sc_ah; |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 761 | struct ath_common *common = ath9k_hw_common(ah); |
Felix Fietkau | c0c1174 | 2011-11-16 13:08:41 +0100 | [diff] [blame] | 762 | bool prev_idle; |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 763 | |
Sujith | 4c48381 | 2009-08-18 10:51:52 +0530 | [diff] [blame] | 764 | mutex_lock(&sc->mutex); |
| 765 | |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 766 | ath_cancel_work(sc); |
Rajkumar Manoharan | 01e1891 | 2012-03-15 05:34:27 +0530 | [diff] [blame] | 767 | del_timer_sync(&sc->rx_poll_timer); |
Luis R. Rodriguez | c94dbff | 2009-07-27 11:53:04 -0700 | [diff] [blame] | 768 | |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 769 | if (test_bit(SC_OP_INVALID, &sc->sc_flags)) { |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 770 | ath_dbg(common, ANY, "Device not present\n"); |
Sujith | 4c48381 | 2009-08-18 10:51:52 +0530 | [diff] [blame] | 771 | mutex_unlock(&sc->mutex); |
Sujith | 9c84b79 | 2008-10-29 10:17:13 +0530 | [diff] [blame] | 772 | return; |
| 773 | } |
| 774 | |
Sujith | 3867cf6 | 2009-12-23 20:03:27 -0500 | [diff] [blame] | 775 | /* Ensure HW is awake when we try to shut it down. */ |
| 776 | ath9k_ps_wakeup(sc); |
| 777 | |
Luis R. Rodriguez | 6a6733f | 2010-10-26 15:27:25 -0700 | [diff] [blame] | 778 | spin_lock_bh(&sc->sc_pcu_lock); |
| 779 | |
Stanislaw Gruszka | 203043f | 2011-01-25 14:08:40 +0100 | [diff] [blame] | 780 | /* prevent tasklets to enable interrupts once we disable them */ |
| 781 | ah->imask &= ~ATH9K_INT_GLOBAL; |
| 782 | |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 783 | /* make sure h/w will not generate any interrupt |
| 784 | * before setting the invalid flag. */ |
Felix Fietkau | 4df3071 | 2010-11-08 20:54:47 +0100 | [diff] [blame] | 785 | ath9k_hw_disable_interrupts(ah); |
Sujith | ff37e33 | 2008-11-24 12:07:55 +0530 | [diff] [blame] | 786 | |
Luis R. Rodriguez | 6a6733f | 2010-10-26 15:27:25 -0700 | [diff] [blame] | 787 | spin_unlock_bh(&sc->sc_pcu_lock); |
| 788 | |
Stanislaw Gruszka | 203043f | 2011-01-25 14:08:40 +0100 | [diff] [blame] | 789 | /* we can now sync irq and kill any running tasklets, since we already |
| 790 | * disabled interrupts and not holding a spin lock */ |
| 791 | synchronize_irq(sc->irq); |
| 792 | tasklet_kill(&sc->intr_tq); |
| 793 | tasklet_kill(&sc->bcon_tasklet); |
| 794 | |
Felix Fietkau | c0c1174 | 2011-11-16 13:08:41 +0100 | [diff] [blame] | 795 | prev_idle = sc->ps_idle; |
| 796 | sc->ps_idle = true; |
| 797 | |
| 798 | spin_lock_bh(&sc->sc_pcu_lock); |
| 799 | |
| 800 | if (ah->led_pin >= 0) { |
| 801 | ath9k_hw_set_gpio(ah, ah->led_pin, 1); |
| 802 | ath9k_hw_cfg_gpio_input(ah, ah->led_pin); |
| 803 | } |
| 804 | |
| 805 | ath_prepare_reset(sc, false, true); |
| 806 | |
| 807 | if (sc->rx.frag) { |
| 808 | dev_kfree_skb_any(sc->rx.frag); |
| 809 | sc->rx.frag = NULL; |
| 810 | } |
| 811 | |
| 812 | if (!ah->curchan) |
| 813 | ah->curchan = ath9k_cmn_get_curchannel(hw, ah); |
| 814 | |
| 815 | ath9k_hw_reset(ah, ah->curchan, ah->caldata, false); |
| 816 | ath9k_hw_phy_disable(ah); |
| 817 | |
| 818 | ath9k_hw_configpcipowersave(ah, true); |
| 819 | |
| 820 | spin_unlock_bh(&sc->sc_pcu_lock); |
| 821 | |
Sujith | 3867cf6 | 2009-12-23 20:03:27 -0500 | [diff] [blame] | 822 | ath9k_ps_restore(sc); |
| 823 | |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 824 | set_bit(SC_OP_INVALID, &sc->sc_flags); |
Felix Fietkau | c0c1174 | 2011-11-16 13:08:41 +0100 | [diff] [blame] | 825 | sc->ps_idle = prev_idle; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 826 | |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 827 | mutex_unlock(&sc->mutex); |
| 828 | |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 829 | ath_dbg(common, CONFIG, "Driver halt\n"); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 830 | } |
| 831 | |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 832 | bool ath9k_uses_beacons(int type) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 833 | { |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 834 | switch (type) { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 835 | case NL80211_IFTYPE_AP: |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 836 | case NL80211_IFTYPE_ADHOC: |
Pat Erley | 9cb5412 | 2009-03-20 22:59:59 -0400 | [diff] [blame] | 837 | case NL80211_IFTYPE_MESH_POINT: |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 838 | return true; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 839 | default: |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 840 | return false; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 841 | } |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 842 | } |
| 843 | |
Rajkumar Manoharan | 6b3b991 | 2010-12-08 19:38:55 +0530 | [diff] [blame] | 844 | static void ath9k_reclaim_beacon(struct ath_softc *sc, |
| 845 | struct ieee80211_vif *vif) |
| 846 | { |
| 847 | struct ath_vif *avp = (void *)vif->drv_priv; |
| 848 | |
Rajkumar Manoharan | 014cf3b | 2011-02-09 17:46:39 +0530 | [diff] [blame] | 849 | ath9k_set_beaconing_status(sc, false); |
Rajkumar Manoharan | 6b3b991 | 2010-12-08 19:38:55 +0530 | [diff] [blame] | 850 | ath_beacon_return(sc, avp); |
Rajkumar Manoharan | 014cf3b | 2011-02-09 17:46:39 +0530 | [diff] [blame] | 851 | ath9k_set_beaconing_status(sc, true); |
Rajkumar Manoharan | 6b3b991 | 2010-12-08 19:38:55 +0530 | [diff] [blame] | 852 | } |
| 853 | |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 854 | static void ath9k_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif) |
| 855 | { |
| 856 | struct ath9k_vif_iter_data *iter_data = data; |
| 857 | int i; |
| 858 | |
| 859 | if (iter_data->hw_macaddr) |
| 860 | for (i = 0; i < ETH_ALEN; i++) |
| 861 | iter_data->mask[i] &= |
| 862 | ~(iter_data->hw_macaddr[i] ^ mac[i]); |
| 863 | |
| 864 | switch (vif->type) { |
| 865 | case NL80211_IFTYPE_AP: |
| 866 | iter_data->naps++; |
| 867 | break; |
| 868 | case NL80211_IFTYPE_STATION: |
| 869 | iter_data->nstations++; |
| 870 | break; |
| 871 | case NL80211_IFTYPE_ADHOC: |
| 872 | iter_data->nadhocs++; |
| 873 | break; |
| 874 | case NL80211_IFTYPE_MESH_POINT: |
| 875 | iter_data->nmeshes++; |
| 876 | break; |
| 877 | case NL80211_IFTYPE_WDS: |
| 878 | iter_data->nwds++; |
| 879 | break; |
| 880 | default: |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 881 | break; |
| 882 | } |
| 883 | } |
| 884 | |
| 885 | /* Called with sc->mutex held. */ |
| 886 | void ath9k_calculate_iter_data(struct ieee80211_hw *hw, |
| 887 | struct ieee80211_vif *vif, |
| 888 | struct ath9k_vif_iter_data *iter_data) |
| 889 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 890 | struct ath_softc *sc = hw->priv; |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 891 | struct ath_hw *ah = sc->sc_ah; |
| 892 | struct ath_common *common = ath9k_hw_common(ah); |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 893 | |
| 894 | /* |
| 895 | * Use the hardware MAC address as reference, the hardware uses it |
| 896 | * together with the BSSID mask when matching addresses. |
| 897 | */ |
| 898 | memset(iter_data, 0, sizeof(*iter_data)); |
| 899 | iter_data->hw_macaddr = common->macaddr; |
| 900 | memset(&iter_data->mask, 0xff, ETH_ALEN); |
| 901 | |
| 902 | if (vif) |
| 903 | ath9k_vif_iter(iter_data, vif->addr, vif); |
| 904 | |
| 905 | /* Get list of all active MAC addresses */ |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 906 | ieee80211_iterate_active_interfaces_atomic(sc->hw, ath9k_vif_iter, |
| 907 | iter_data); |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 908 | } |
| 909 | |
| 910 | /* Called with sc->mutex held. */ |
| 911 | static void ath9k_calculate_summary_state(struct ieee80211_hw *hw, |
| 912 | struct ieee80211_vif *vif) |
| 913 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 914 | struct ath_softc *sc = hw->priv; |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 915 | struct ath_hw *ah = sc->sc_ah; |
| 916 | struct ath_common *common = ath9k_hw_common(ah); |
| 917 | struct ath9k_vif_iter_data iter_data; |
| 918 | |
| 919 | ath9k_calculate_iter_data(hw, vif, &iter_data); |
| 920 | |
| 921 | /* Set BSSID mask. */ |
| 922 | memcpy(common->bssidmask, iter_data.mask, ETH_ALEN); |
| 923 | ath_hw_setbssidmask(common); |
| 924 | |
| 925 | /* Set op-mode & TSF */ |
| 926 | if (iter_data.naps > 0) { |
| 927 | ath9k_hw_set_tsfadjust(ah, 1); |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 928 | set_bit(SC_OP_TSF_RESET, &sc->sc_flags); |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 929 | ah->opmode = NL80211_IFTYPE_AP; |
| 930 | } else { |
| 931 | ath9k_hw_set_tsfadjust(ah, 0); |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 932 | clear_bit(SC_OP_TSF_RESET, &sc->sc_flags); |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 933 | |
Javier Cardona | fd5999c | 2011-05-03 16:57:19 -0700 | [diff] [blame] | 934 | if (iter_data.nmeshes) |
| 935 | ah->opmode = NL80211_IFTYPE_MESH_POINT; |
| 936 | else if (iter_data.nwds) |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 937 | ah->opmode = NL80211_IFTYPE_AP; |
| 938 | else if (iter_data.nadhocs) |
| 939 | ah->opmode = NL80211_IFTYPE_ADHOC; |
| 940 | else |
| 941 | ah->opmode = NL80211_IFTYPE_STATION; |
| 942 | } |
| 943 | |
| 944 | /* |
| 945 | * Enable MIB interrupts when there are hardware phy counters. |
| 946 | */ |
Felix Fietkau | 198823f | 2012-06-15 15:25:25 +0200 | [diff] [blame] | 947 | if ((iter_data.nstations + iter_data.nadhocs + iter_data.nmeshes) > 0) |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 948 | ah->imask |= ATH9K_INT_TSFOOR; |
Felix Fietkau | 198823f | 2012-06-15 15:25:25 +0200 | [diff] [blame] | 949 | else |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 950 | ah->imask &= ~ATH9K_INT_TSFOOR; |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 951 | |
Felix Fietkau | 72d874c | 2011-10-08 20:06:19 +0200 | [diff] [blame] | 952 | ath9k_hw_set_interrupts(ah); |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 953 | |
| 954 | /* Set up ANI */ |
Rajkumar Manoharan | 2e5ef45 | 2011-05-20 17:52:12 +0530 | [diff] [blame] | 955 | if (iter_data.naps > 0) { |
Rajkumar Manoharan | 729da390 | 2011-05-09 19:11:29 +0530 | [diff] [blame] | 956 | sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER; |
Mohammed Shafi Shajakhan | 05c0be2 | 2011-05-26 10:56:15 +0530 | [diff] [blame] | 957 | |
| 958 | if (!common->disable_ani) { |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 959 | set_bit(SC_OP_ANI_RUN, &sc->sc_flags); |
Mohammed Shafi Shajakhan | 05c0be2 | 2011-05-26 10:56:15 +0530 | [diff] [blame] | 960 | ath_start_ani(common); |
| 961 | } |
| 962 | |
Rajkumar Manoharan | f60c49b | 2011-04-08 17:06:25 +0530 | [diff] [blame] | 963 | } else { |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 964 | clear_bit(SC_OP_ANI_RUN, &sc->sc_flags); |
Rajkumar Manoharan | f60c49b | 2011-04-08 17:06:25 +0530 | [diff] [blame] | 965 | del_timer_sync(&common->ani.timer); |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 966 | } |
| 967 | } |
| 968 | |
| 969 | /* Called with sc->mutex held, vif counts set up properly. */ |
| 970 | static void ath9k_do_vif_add_setup(struct ieee80211_hw *hw, |
| 971 | struct ieee80211_vif *vif) |
| 972 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 973 | struct ath_softc *sc = hw->priv; |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 974 | |
| 975 | ath9k_calculate_summary_state(hw, vif); |
| 976 | |
| 977 | if (ath9k_uses_beacons(vif->type)) { |
Rajkumar Manoharan | ed2578c | 2012-04-19 19:13:51 +0530 | [diff] [blame] | 978 | /* Reserve a beacon slot for the vif */ |
Rajkumar Manoharan | 014cf3b | 2011-02-09 17:46:39 +0530 | [diff] [blame] | 979 | ath9k_set_beaconing_status(sc, false); |
Rajkumar Manoharan | ed2578c | 2012-04-19 19:13:51 +0530 | [diff] [blame] | 980 | ath_beacon_alloc(sc, vif); |
Rajkumar Manoharan | 014cf3b | 2011-02-09 17:46:39 +0530 | [diff] [blame] | 981 | ath9k_set_beaconing_status(sc, true); |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 982 | } |
| 983 | } |
| 984 | |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 985 | static int ath9k_add_interface(struct ieee80211_hw *hw, |
| 986 | struct ieee80211_vif *vif) |
| 987 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 988 | struct ath_softc *sc = hw->priv; |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 989 | struct ath_hw *ah = sc->sc_ah; |
| 990 | struct ath_common *common = ath9k_hw_common(ah); |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 991 | int ret = 0; |
| 992 | |
Felix Fietkau | 96f372c | 2011-04-07 19:07:17 +0200 | [diff] [blame] | 993 | ath9k_ps_wakeup(sc); |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 994 | mutex_lock(&sc->mutex); |
| 995 | |
| 996 | switch (vif->type) { |
| 997 | case NL80211_IFTYPE_STATION: |
| 998 | case NL80211_IFTYPE_WDS: |
| 999 | case NL80211_IFTYPE_ADHOC: |
| 1000 | case NL80211_IFTYPE_AP: |
| 1001 | case NL80211_IFTYPE_MESH_POINT: |
| 1002 | break; |
| 1003 | default: |
| 1004 | ath_err(common, "Interface type %d not yet supported\n", |
| 1005 | vif->type); |
| 1006 | ret = -EOPNOTSUPP; |
| 1007 | goto out; |
| 1008 | } |
| 1009 | |
| 1010 | if (ath9k_uses_beacons(vif->type)) { |
| 1011 | if (sc->nbcnvifs >= ATH_BCBUF) { |
| 1012 | ath_err(common, "Not enough beacon buffers when adding" |
| 1013 | " new interface of type: %i\n", |
| 1014 | vif->type); |
| 1015 | ret = -ENOBUFS; |
| 1016 | goto out; |
| 1017 | } |
| 1018 | } |
| 1019 | |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 1020 | ath_dbg(common, CONFIG, "Attach a VIF of type: %d\n", vif->type); |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 1021 | |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 1022 | sc->nvifs++; |
| 1023 | |
| 1024 | ath9k_do_vif_add_setup(hw, vif); |
| 1025 | out: |
| 1026 | mutex_unlock(&sc->mutex); |
Felix Fietkau | 96f372c | 2011-04-07 19:07:17 +0200 | [diff] [blame] | 1027 | ath9k_ps_restore(sc); |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 1028 | return ret; |
| 1029 | } |
| 1030 | |
Rajkumar Manoharan | 6b3b991 | 2010-12-08 19:38:55 +0530 | [diff] [blame] | 1031 | static int ath9k_change_interface(struct ieee80211_hw *hw, |
| 1032 | struct ieee80211_vif *vif, |
| 1033 | enum nl80211_iftype new_type, |
| 1034 | bool p2p) |
| 1035 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 1036 | struct ath_softc *sc = hw->priv; |
Rajkumar Manoharan | 6b3b991 | 2010-12-08 19:38:55 +0530 | [diff] [blame] | 1037 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
Dan Carpenter | 6dab55b | 2010-12-21 06:59:06 +0300 | [diff] [blame] | 1038 | int ret = 0; |
Rajkumar Manoharan | 6b3b991 | 2010-12-08 19:38:55 +0530 | [diff] [blame] | 1039 | |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 1040 | ath_dbg(common, CONFIG, "Change Interface\n"); |
Rajkumar Manoharan | 6b3b991 | 2010-12-08 19:38:55 +0530 | [diff] [blame] | 1041 | mutex_lock(&sc->mutex); |
Felix Fietkau | 96f372c | 2011-04-07 19:07:17 +0200 | [diff] [blame] | 1042 | ath9k_ps_wakeup(sc); |
Rajkumar Manoharan | 6b3b991 | 2010-12-08 19:38:55 +0530 | [diff] [blame] | 1043 | |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 1044 | if (ath9k_uses_beacons(new_type) && |
| 1045 | !ath9k_uses_beacons(vif->type)) { |
Rajkumar Manoharan | 6b3b991 | 2010-12-08 19:38:55 +0530 | [diff] [blame] | 1046 | if (sc->nbcnvifs >= ATH_BCBUF) { |
| 1047 | ath_err(common, "No beacon slot available\n"); |
Dan Carpenter | 6dab55b | 2010-12-21 06:59:06 +0300 | [diff] [blame] | 1048 | ret = -ENOBUFS; |
| 1049 | goto out; |
Rajkumar Manoharan | 6b3b991 | 2010-12-08 19:38:55 +0530 | [diff] [blame] | 1050 | } |
Rajkumar Manoharan | 6b3b991 | 2010-12-08 19:38:55 +0530 | [diff] [blame] | 1051 | } |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 1052 | |
| 1053 | /* Clean up old vif stuff */ |
| 1054 | if (ath9k_uses_beacons(vif->type)) |
| 1055 | ath9k_reclaim_beacon(sc, vif); |
| 1056 | |
| 1057 | /* Add new settings */ |
Rajkumar Manoharan | 6b3b991 | 2010-12-08 19:38:55 +0530 | [diff] [blame] | 1058 | vif->type = new_type; |
| 1059 | vif->p2p = p2p; |
| 1060 | |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 1061 | ath9k_do_vif_add_setup(hw, vif); |
Dan Carpenter | 6dab55b | 2010-12-21 06:59:06 +0300 | [diff] [blame] | 1062 | out: |
Felix Fietkau | 96f372c | 2011-04-07 19:07:17 +0200 | [diff] [blame] | 1063 | ath9k_ps_restore(sc); |
Rajkumar Manoharan | 6b3b991 | 2010-12-08 19:38:55 +0530 | [diff] [blame] | 1064 | mutex_unlock(&sc->mutex); |
Dan Carpenter | 6dab55b | 2010-12-21 06:59:06 +0300 | [diff] [blame] | 1065 | return ret; |
Rajkumar Manoharan | 6b3b991 | 2010-12-08 19:38:55 +0530 | [diff] [blame] | 1066 | } |
| 1067 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1068 | static void ath9k_remove_interface(struct ieee80211_hw *hw, |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 1069 | struct ieee80211_vif *vif) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1070 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 1071 | struct ath_softc *sc = hw->priv; |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 1072 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1073 | |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 1074 | ath_dbg(common, CONFIG, "Detach Interface\n"); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1075 | |
Felix Fietkau | 96f372c | 2011-04-07 19:07:17 +0200 | [diff] [blame] | 1076 | ath9k_ps_wakeup(sc); |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1077 | mutex_lock(&sc->mutex); |
| 1078 | |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 1079 | sc->nvifs--; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1080 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1081 | /* Reclaim beacon resources */ |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 1082 | if (ath9k_uses_beacons(vif->type)) |
Rajkumar Manoharan | 6b3b991 | 2010-12-08 19:38:55 +0530 | [diff] [blame] | 1083 | ath9k_reclaim_beacon(sc, vif); |
Jouni Malinen | 2c3db3d | 2009-03-03 19:23:26 +0200 | [diff] [blame] | 1084 | |
Ben Greear | 4801416 | 2011-01-15 19:13:48 +0000 | [diff] [blame] | 1085 | ath9k_calculate_summary_state(hw, NULL); |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1086 | |
| 1087 | mutex_unlock(&sc->mutex); |
Felix Fietkau | 96f372c | 2011-04-07 19:07:17 +0200 | [diff] [blame] | 1088 | ath9k_ps_restore(sc); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1089 | } |
| 1090 | |
Senthil Balasubramanian | fbab739 | 2010-10-05 20:36:40 +0530 | [diff] [blame] | 1091 | static void ath9k_enable_ps(struct ath_softc *sc) |
Senthil Balasubramanian | 3f7c5c1 | 2010-02-03 22:51:13 +0530 | [diff] [blame] | 1092 | { |
Pavel Roskin | 3069168 | 2010-03-31 18:05:31 -0400 | [diff] [blame] | 1093 | struct ath_hw *ah = sc->sc_ah; |
Sujith Manoharan | ad12886 | 2012-04-24 10:23:20 +0530 | [diff] [blame] | 1094 | struct ath_common *common = ath9k_hw_common(ah); |
Pavel Roskin | 3069168 | 2010-03-31 18:05:31 -0400 | [diff] [blame] | 1095 | |
Senthil Balasubramanian | 3f7c5c1 | 2010-02-03 22:51:13 +0530 | [diff] [blame] | 1096 | sc->ps_enabled = true; |
Pavel Roskin | 3069168 | 2010-03-31 18:05:31 -0400 | [diff] [blame] | 1097 | if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) { |
| 1098 | if ((ah->imask & ATH9K_INT_TIM_TIMER) == 0) { |
| 1099 | ah->imask |= ATH9K_INT_TIM_TIMER; |
Felix Fietkau | 72d874c | 2011-10-08 20:06:19 +0200 | [diff] [blame] | 1100 | ath9k_hw_set_interrupts(ah); |
Senthil Balasubramanian | 3f7c5c1 | 2010-02-03 22:51:13 +0530 | [diff] [blame] | 1101 | } |
Vasanthakumar Thiagarajan | fdf7662 | 2010-05-17 18:57:55 -0700 | [diff] [blame] | 1102 | ath9k_hw_setrxabort(ah, 1); |
Senthil Balasubramanian | 3f7c5c1 | 2010-02-03 22:51:13 +0530 | [diff] [blame] | 1103 | } |
Sujith Manoharan | ad12886 | 2012-04-24 10:23:20 +0530 | [diff] [blame] | 1104 | ath_dbg(common, PS, "PowerSave enabled\n"); |
Senthil Balasubramanian | 3f7c5c1 | 2010-02-03 22:51:13 +0530 | [diff] [blame] | 1105 | } |
| 1106 | |
Senthil Balasubramanian | 845d708 | 2010-10-05 20:36:41 +0530 | [diff] [blame] | 1107 | static void ath9k_disable_ps(struct ath_softc *sc) |
| 1108 | { |
| 1109 | struct ath_hw *ah = sc->sc_ah; |
Sujith Manoharan | ad12886 | 2012-04-24 10:23:20 +0530 | [diff] [blame] | 1110 | struct ath_common *common = ath9k_hw_common(ah); |
Senthil Balasubramanian | 845d708 | 2010-10-05 20:36:41 +0530 | [diff] [blame] | 1111 | |
| 1112 | sc->ps_enabled = false; |
| 1113 | ath9k_hw_setpower(ah, ATH9K_PM_AWAKE); |
| 1114 | if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) { |
| 1115 | ath9k_hw_setrxabort(ah, 0); |
| 1116 | sc->ps_flags &= ~(PS_WAIT_FOR_BEACON | |
| 1117 | PS_WAIT_FOR_CAB | |
| 1118 | PS_WAIT_FOR_PSPOLL_DATA | |
| 1119 | PS_WAIT_FOR_TX_ACK); |
| 1120 | if (ah->imask & ATH9K_INT_TIM_TIMER) { |
| 1121 | ah->imask &= ~ATH9K_INT_TIM_TIMER; |
Felix Fietkau | 72d874c | 2011-10-08 20:06:19 +0200 | [diff] [blame] | 1122 | ath9k_hw_set_interrupts(ah); |
Senthil Balasubramanian | 845d708 | 2010-10-05 20:36:41 +0530 | [diff] [blame] | 1123 | } |
| 1124 | } |
Sujith Manoharan | ad12886 | 2012-04-24 10:23:20 +0530 | [diff] [blame] | 1125 | ath_dbg(common, PS, "PowerSave disabled\n"); |
Senthil Balasubramanian | 845d708 | 2010-10-05 20:36:41 +0530 | [diff] [blame] | 1126 | } |
| 1127 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 1128 | static int ath9k_config(struct ieee80211_hw *hw, u32 changed) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1129 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 1130 | struct ath_softc *sc = hw->priv; |
Felix Fietkau | 3430098 | 2010-10-10 18:21:52 +0200 | [diff] [blame] | 1131 | struct ath_hw *ah = sc->sc_ah; |
| 1132 | struct ath_common *common = ath9k_hw_common(ah); |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 1133 | struct ieee80211_conf *conf = &hw->conf; |
Felix Fietkau | 75600ab | 2012-04-12 20:36:31 +0200 | [diff] [blame] | 1134 | bool reset_channel = false; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1135 | |
Felix Fietkau | c0c1174 | 2011-11-16 13:08:41 +0100 | [diff] [blame] | 1136 | ath9k_ps_wakeup(sc); |
Sujith | aa33de0 | 2008-12-18 11:40:16 +0530 | [diff] [blame] | 1137 | mutex_lock(&sc->mutex); |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1138 | |
Felix Fietkau | daa1b6e | 2011-11-16 13:08:43 +0100 | [diff] [blame] | 1139 | if (changed & IEEE80211_CONF_CHANGE_IDLE) { |
Felix Fietkau | 7545daf | 2011-01-24 19:23:16 +0100 | [diff] [blame] | 1140 | sc->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE); |
Rajkumar Manoharan | b73f3e7 | 2012-07-01 19:53:53 +0530 | [diff] [blame] | 1141 | if (sc->ps_idle) { |
Felix Fietkau | daa1b6e | 2011-11-16 13:08:43 +0100 | [diff] [blame] | 1142 | ath_cancel_work(sc); |
Rajkumar Manoharan | b73f3e7 | 2012-07-01 19:53:53 +0530 | [diff] [blame] | 1143 | ath9k_stop_btcoex(sc); |
| 1144 | } else { |
| 1145 | ath9k_start_btcoex(sc); |
Felix Fietkau | 75600ab | 2012-04-12 20:36:31 +0200 | [diff] [blame] | 1146 | /* |
| 1147 | * The chip needs a reset to properly wake up from |
| 1148 | * full sleep |
| 1149 | */ |
| 1150 | reset_channel = ah->chip_fullsleep; |
Rajkumar Manoharan | b73f3e7 | 2012-07-01 19:53:53 +0530 | [diff] [blame] | 1151 | } |
Felix Fietkau | daa1b6e | 2011-11-16 13:08:43 +0100 | [diff] [blame] | 1152 | } |
Luis R. Rodriguez | 6483917 | 2009-07-14 20:22:53 -0400 | [diff] [blame] | 1153 | |
Luis R. Rodriguez | e7824a5 | 2009-11-24 02:53:25 -0500 | [diff] [blame] | 1154 | /* |
| 1155 | * We just prepare to enable PS. We have to wait until our AP has |
| 1156 | * ACK'd our null data frame to disable RX otherwise we'll ignore |
| 1157 | * those ACKs and end up retransmitting the same null data frames. |
| 1158 | * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode. |
| 1159 | */ |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 1160 | if (changed & IEEE80211_CONF_CHANGE_PS) { |
Luis R. Rodriguez | 8ab2cd0 | 2010-09-16 15:12:26 -0400 | [diff] [blame] | 1161 | unsigned long flags; |
| 1162 | spin_lock_irqsave(&sc->sc_pm_lock, flags); |
Senthil Balasubramanian | fbab739 | 2010-10-05 20:36:40 +0530 | [diff] [blame] | 1163 | if (conf->flags & IEEE80211_CONF_PS) |
| 1164 | ath9k_enable_ps(sc); |
Senthil Balasubramanian | 845d708 | 2010-10-05 20:36:41 +0530 | [diff] [blame] | 1165 | else |
| 1166 | ath9k_disable_ps(sc); |
Luis R. Rodriguez | 8ab2cd0 | 2010-09-16 15:12:26 -0400 | [diff] [blame] | 1167 | spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 1168 | } |
| 1169 | |
Sujith | 199afd9 | 2010-01-08 10:36:13 +0530 | [diff] [blame] | 1170 | if (changed & IEEE80211_CONF_CHANGE_MONITOR) { |
| 1171 | if (conf->flags & IEEE80211_CONF_MONITOR) { |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 1172 | ath_dbg(common, CONFIG, "Monitor mode is enabled\n"); |
Rajkumar Manoharan | 5f841b4 | 2010-10-27 18:31:15 +0530 | [diff] [blame] | 1173 | sc->sc_ah->is_monitoring = true; |
| 1174 | } else { |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 1175 | ath_dbg(common, CONFIG, "Monitor mode is disabled\n"); |
Rajkumar Manoharan | 5f841b4 | 2010-10-27 18:31:15 +0530 | [diff] [blame] | 1176 | sc->sc_ah->is_monitoring = false; |
Sujith | 199afd9 | 2010-01-08 10:36:13 +0530 | [diff] [blame] | 1177 | } |
| 1178 | } |
| 1179 | |
Felix Fietkau | 75600ab | 2012-04-12 20:36:31 +0200 | [diff] [blame] | 1180 | if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || reset_channel) { |
Sujith | 99405f9 | 2008-11-24 12:08:35 +0530 | [diff] [blame] | 1181 | struct ieee80211_channel *curchan = hw->conf.channel; |
Luis R. Rodriguez | 5f8e077 | 2009-01-22 15:16:48 -0800 | [diff] [blame] | 1182 | int pos = curchan->hw_value; |
Felix Fietkau | 3430098 | 2010-10-10 18:21:52 +0200 | [diff] [blame] | 1183 | int old_pos = -1; |
| 1184 | unsigned long flags; |
| 1185 | |
| 1186 | if (ah->curchan) |
| 1187 | old_pos = ah->curchan - &ah->channels[0]; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1188 | |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 1189 | ath_dbg(common, CONFIG, "Set channel: %d MHz type: %d\n", |
Ben Greear | 8c79a61 | 2011-02-07 13:44:33 -0800 | [diff] [blame] | 1190 | curchan->center_freq, conf->channel_type); |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 1191 | |
Felix Fietkau | 3430098 | 2010-10-10 18:21:52 +0200 | [diff] [blame] | 1192 | /* update survey stats for the old channel before switching */ |
| 1193 | spin_lock_irqsave(&common->cc_lock, flags); |
| 1194 | ath_update_survey_stats(sc); |
| 1195 | spin_unlock_irqrestore(&common->cc_lock, flags); |
| 1196 | |
| 1197 | /* |
Rajkumar Manoharan | e338a85 | 2011-08-13 10:28:17 +0530 | [diff] [blame] | 1198 | * Preserve the current channel values, before updating |
| 1199 | * the same channel |
| 1200 | */ |
Rajkumar Manoharan | 1a19f77 | 2012-01-09 15:37:53 +0530 | [diff] [blame] | 1201 | if (ah->curchan && (old_pos == pos)) |
| 1202 | ath9k_hw_getnf(ah, ah->curchan); |
Rajkumar Manoharan | e338a85 | 2011-08-13 10:28:17 +0530 | [diff] [blame] | 1203 | |
| 1204 | ath9k_cmn_update_ichannel(&sc->sc_ah->channels[pos], |
| 1205 | curchan, conf->channel_type); |
| 1206 | |
| 1207 | /* |
Felix Fietkau | 3430098 | 2010-10-10 18:21:52 +0200 | [diff] [blame] | 1208 | * If the operating channel changes, change the survey in-use flags |
| 1209 | * along with it. |
| 1210 | * Reset the survey data for the new channel, unless we're switching |
| 1211 | * back to the operating channel from an off-channel operation. |
| 1212 | */ |
| 1213 | if (!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) && |
| 1214 | sc->cur_survey != &sc->survey[pos]) { |
| 1215 | |
| 1216 | if (sc->cur_survey) |
| 1217 | sc->cur_survey->filled &= ~SURVEY_INFO_IN_USE; |
| 1218 | |
| 1219 | sc->cur_survey = &sc->survey[pos]; |
| 1220 | |
| 1221 | memset(sc->cur_survey, 0, sizeof(struct survey_info)); |
| 1222 | sc->cur_survey->filled |= SURVEY_INFO_IN_USE; |
| 1223 | } else if (!(sc->survey[pos].filled & SURVEY_INFO_IN_USE)) { |
| 1224 | memset(&sc->survey[pos], 0, sizeof(struct survey_info)); |
| 1225 | } |
| 1226 | |
Jouni Malinen | 0e2dedf | 2009-03-03 19:23:32 +0200 | [diff] [blame] | 1227 | if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) { |
Joe Perches | 3800276 | 2010-12-02 19:12:36 -0800 | [diff] [blame] | 1228 | ath_err(common, "Unable to set channel\n"); |
Sujith | aa33de0 | 2008-12-18 11:40:16 +0530 | [diff] [blame] | 1229 | mutex_unlock(&sc->mutex); |
Rajkumar Manoharan | 8389fb3 | 2012-06-11 12:19:30 +0530 | [diff] [blame] | 1230 | ath9k_ps_restore(sc); |
Sujith | e11602b | 2008-11-27 09:46:27 +0530 | [diff] [blame] | 1231 | return -EINVAL; |
| 1232 | } |
Felix Fietkau | 3430098 | 2010-10-10 18:21:52 +0200 | [diff] [blame] | 1233 | |
| 1234 | /* |
| 1235 | * The most recent snapshot of channel->noisefloor for the old |
| 1236 | * channel is only available after the hardware reset. Copy it to |
| 1237 | * the survey stats now. |
| 1238 | */ |
| 1239 | if (old_pos >= 0) |
| 1240 | ath_update_survey_nf(sc, old_pos); |
Sujith | 094d05d | 2008-12-12 11:57:43 +0530 | [diff] [blame] | 1241 | } |
Sujith | 86b89ee | 2008-08-07 10:54:57 +0530 | [diff] [blame] | 1242 | |
Luis R. Rodriguez | c9f6a65 | 2010-01-19 14:04:19 -0500 | [diff] [blame] | 1243 | if (changed & IEEE80211_CONF_CHANGE_POWER) { |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 1244 | ath_dbg(common, CONFIG, "Set power: %d\n", conf->power_level); |
Sujith | 17d7904 | 2009-02-09 13:27:03 +0530 | [diff] [blame] | 1245 | sc->config.txpowlimit = 2 * conf->power_level; |
Rajkumar Manoharan | 5048e8c | 2011-01-31 23:47:44 +0530 | [diff] [blame] | 1246 | ath9k_cmn_update_txpow(ah, sc->curtxpow, |
| 1247 | sc->config.txpowlimit, &sc->curtxpow); |
Luis R. Rodriguez | 6483917 | 2009-07-14 20:22:53 -0400 | [diff] [blame] | 1248 | } |
| 1249 | |
Sujith | aa33de0 | 2008-12-18 11:40:16 +0530 | [diff] [blame] | 1250 | mutex_unlock(&sc->mutex); |
Felix Fietkau | c0c1174 | 2011-11-16 13:08:41 +0100 | [diff] [blame] | 1251 | ath9k_ps_restore(sc); |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1252 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1253 | return 0; |
| 1254 | } |
| 1255 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1256 | #define SUPPORTED_FILTERS \ |
| 1257 | (FIF_PROMISC_IN_BSS | \ |
| 1258 | FIF_ALLMULTI | \ |
| 1259 | FIF_CONTROL | \ |
Luis R. Rodriguez | af6a3fc | 2009-08-08 21:55:16 -0400 | [diff] [blame] | 1260 | FIF_PSPOLL | \ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1261 | FIF_OTHER_BSS | \ |
| 1262 | FIF_BCN_PRBRESP_PROMISC | \ |
Jouni Malinen | 9c1d8e4 | 2010-10-13 17:29:31 +0300 | [diff] [blame] | 1263 | FIF_PROBE_REQ | \ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1264 | FIF_FCSFAIL) |
| 1265 | |
Sujith | 7dcfdcd | 2008-08-11 14:03:13 +0530 | [diff] [blame] | 1266 | /* FIXME: sc->sc_full_reset ? */ |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1267 | static void ath9k_configure_filter(struct ieee80211_hw *hw, |
| 1268 | unsigned int changed_flags, |
| 1269 | unsigned int *total_flags, |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1270 | u64 multicast) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1271 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 1272 | struct ath_softc *sc = hw->priv; |
Sujith | 7dcfdcd | 2008-08-11 14:03:13 +0530 | [diff] [blame] | 1273 | u32 rfilt; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1274 | |
| 1275 | changed_flags &= SUPPORTED_FILTERS; |
| 1276 | *total_flags &= SUPPORTED_FILTERS; |
| 1277 | |
Sujith | b77f483 | 2008-12-07 21:44:03 +0530 | [diff] [blame] | 1278 | sc->rx.rxfilter = *total_flags; |
Jouni Malinen | aa68aea | 2009-05-19 17:01:41 +0300 | [diff] [blame] | 1279 | ath9k_ps_wakeup(sc); |
Sujith | 7dcfdcd | 2008-08-11 14:03:13 +0530 | [diff] [blame] | 1280 | rfilt = ath_calcrxfilter(sc); |
| 1281 | ath9k_hw_setrxfilter(sc->sc_ah, rfilt); |
Jouni Malinen | aa68aea | 2009-05-19 17:01:41 +0300 | [diff] [blame] | 1282 | ath9k_ps_restore(sc); |
Sujith | 7dcfdcd | 2008-08-11 14:03:13 +0530 | [diff] [blame] | 1283 | |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 1284 | ath_dbg(ath9k_hw_common(sc->sc_ah), CONFIG, "Set HW RX filter: 0x%x\n", |
| 1285 | rfilt); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1286 | } |
| 1287 | |
Johannes Berg | 4ca7786 | 2010-02-19 19:06:56 +0100 | [diff] [blame] | 1288 | static int ath9k_sta_add(struct ieee80211_hw *hw, |
| 1289 | struct ieee80211_vif *vif, |
| 1290 | struct ieee80211_sta *sta) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1291 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 1292 | struct ath_softc *sc = hw->priv; |
Felix Fietkau | 93ae2dd | 2011-04-17 23:28:10 +0200 | [diff] [blame] | 1293 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| 1294 | struct ath_node *an = (struct ath_node *) sta->drv_priv; |
| 1295 | struct ieee80211_key_conf ps_key = { }; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1296 | |
Ben Greear | 7e1e386 | 2011-11-03 11:33:13 -0700 | [diff] [blame] | 1297 | ath_node_attach(sc, sta, vif); |
Felix Fietkau | f59a59f | 2011-05-10 20:52:22 +0200 | [diff] [blame] | 1298 | |
| 1299 | if (vif->type != NL80211_IFTYPE_AP && |
| 1300 | vif->type != NL80211_IFTYPE_AP_VLAN) |
| 1301 | return 0; |
| 1302 | |
Felix Fietkau | 93ae2dd | 2011-04-17 23:28:10 +0200 | [diff] [blame] | 1303 | an->ps_key = ath_key_config(common, vif, sta, &ps_key); |
Johannes Berg | 4ca7786 | 2010-02-19 19:06:56 +0100 | [diff] [blame] | 1304 | |
| 1305 | return 0; |
| 1306 | } |
| 1307 | |
Felix Fietkau | 93ae2dd | 2011-04-17 23:28:10 +0200 | [diff] [blame] | 1308 | static void ath9k_del_ps_key(struct ath_softc *sc, |
| 1309 | struct ieee80211_vif *vif, |
| 1310 | struct ieee80211_sta *sta) |
| 1311 | { |
| 1312 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| 1313 | struct ath_node *an = (struct ath_node *) sta->drv_priv; |
| 1314 | struct ieee80211_key_conf ps_key = { .hw_key_idx = an->ps_key }; |
| 1315 | |
| 1316 | if (!an->ps_key) |
| 1317 | return; |
| 1318 | |
| 1319 | ath_key_delete(common, &ps_key); |
| 1320 | } |
| 1321 | |
Johannes Berg | 4ca7786 | 2010-02-19 19:06:56 +0100 | [diff] [blame] | 1322 | static int ath9k_sta_remove(struct ieee80211_hw *hw, |
| 1323 | struct ieee80211_vif *vif, |
| 1324 | struct ieee80211_sta *sta) |
| 1325 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 1326 | struct ath_softc *sc = hw->priv; |
Johannes Berg | 4ca7786 | 2010-02-19 19:06:56 +0100 | [diff] [blame] | 1327 | |
Felix Fietkau | 93ae2dd | 2011-04-17 23:28:10 +0200 | [diff] [blame] | 1328 | ath9k_del_ps_key(sc, vif, sta); |
Johannes Berg | 4ca7786 | 2010-02-19 19:06:56 +0100 | [diff] [blame] | 1329 | ath_node_detach(sc, sta); |
| 1330 | |
| 1331 | return 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1332 | } |
| 1333 | |
Felix Fietkau | 5519541 | 2011-04-17 23:28:09 +0200 | [diff] [blame] | 1334 | static void ath9k_sta_notify(struct ieee80211_hw *hw, |
| 1335 | struct ieee80211_vif *vif, |
| 1336 | enum sta_notify_cmd cmd, |
| 1337 | struct ieee80211_sta *sta) |
| 1338 | { |
| 1339 | struct ath_softc *sc = hw->priv; |
| 1340 | struct ath_node *an = (struct ath_node *) sta->drv_priv; |
| 1341 | |
Sujith Manoharan | 3d4e20f | 2012-03-14 14:40:58 +0530 | [diff] [blame] | 1342 | if (!sta->ht_cap.ht_supported) |
Mohammed Shafi Shajakhan | b25bfda | 2011-12-26 10:42:15 +0530 | [diff] [blame] | 1343 | return; |
| 1344 | |
Felix Fietkau | 5519541 | 2011-04-17 23:28:09 +0200 | [diff] [blame] | 1345 | switch (cmd) { |
| 1346 | case STA_NOTIFY_SLEEP: |
| 1347 | an->sleeping = true; |
Johannes Berg | 042ec45 | 2011-09-29 16:04:26 +0200 | [diff] [blame] | 1348 | ath_tx_aggr_sleep(sta, sc, an); |
Felix Fietkau | 5519541 | 2011-04-17 23:28:09 +0200 | [diff] [blame] | 1349 | break; |
| 1350 | case STA_NOTIFY_AWAKE: |
| 1351 | an->sleeping = false; |
| 1352 | ath_tx_aggr_wakeup(sc, an); |
| 1353 | break; |
| 1354 | } |
| 1355 | } |
| 1356 | |
Eliad Peller | 8a3a3c8 | 2011-10-02 10:15:52 +0200 | [diff] [blame] | 1357 | static int ath9k_conf_tx(struct ieee80211_hw *hw, |
| 1358 | struct ieee80211_vif *vif, u16 queue, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1359 | const struct ieee80211_tx_queue_params *params) |
| 1360 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 1361 | struct ath_softc *sc = hw->priv; |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 1362 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
Felix Fietkau | 066dae9 | 2010-11-07 14:59:39 +0100 | [diff] [blame] | 1363 | struct ath_txq *txq; |
Sujith | ea9880f | 2008-08-07 10:53:10 +0530 | [diff] [blame] | 1364 | struct ath9k_tx_queue_info qi; |
Felix Fietkau | 066dae9 | 2010-11-07 14:59:39 +0100 | [diff] [blame] | 1365 | int ret = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1366 | |
| 1367 | if (queue >= WME_NUM_AC) |
| 1368 | return 0; |
| 1369 | |
Felix Fietkau | 066dae9 | 2010-11-07 14:59:39 +0100 | [diff] [blame] | 1370 | txq = sc->tx.txq_map[queue]; |
| 1371 | |
Felix Fietkau | 96f372c | 2011-04-07 19:07:17 +0200 | [diff] [blame] | 1372 | ath9k_ps_wakeup(sc); |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1373 | mutex_lock(&sc->mutex); |
| 1374 | |
Sujith | 1ffb061 | 2009-03-30 15:28:46 +0530 | [diff] [blame] | 1375 | memset(&qi, 0, sizeof(struct ath9k_tx_queue_info)); |
| 1376 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1377 | qi.tqi_aifs = params->aifs; |
| 1378 | qi.tqi_cwmin = params->cw_min; |
| 1379 | qi.tqi_cwmax = params->cw_max; |
| 1380 | qi.tqi_burstTime = params->txop; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1381 | |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 1382 | ath_dbg(common, CONFIG, |
Joe Perches | 226afe6 | 2010-12-02 19:12:37 -0800 | [diff] [blame] | 1383 | "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n", |
| 1384 | queue, txq->axq_qnum, params->aifs, params->cw_min, |
| 1385 | params->cw_max, params->txop); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1386 | |
Felix Fietkau | 066dae9 | 2010-11-07 14:59:39 +0100 | [diff] [blame] | 1387 | ret = ath_txq_update(sc, txq->axq_qnum, &qi); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1388 | if (ret) |
Joe Perches | 3800276 | 2010-12-02 19:12:36 -0800 | [diff] [blame] | 1389 | ath_err(common, "TXQ Update failed\n"); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1390 | |
Vivek Natarajan | 94db293 | 2009-11-25 12:01:54 +0530 | [diff] [blame] | 1391 | if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) |
Felix Fietkau | 066dae9 | 2010-11-07 14:59:39 +0100 | [diff] [blame] | 1392 | if (queue == WME_AC_BE && !ret) |
Vivek Natarajan | 94db293 | 2009-11-25 12:01:54 +0530 | [diff] [blame] | 1393 | ath_beaconq_config(sc); |
| 1394 | |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1395 | mutex_unlock(&sc->mutex); |
Felix Fietkau | 96f372c | 2011-04-07 19:07:17 +0200 | [diff] [blame] | 1396 | ath9k_ps_restore(sc); |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1397 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1398 | return ret; |
| 1399 | } |
| 1400 | |
| 1401 | static int ath9k_set_key(struct ieee80211_hw *hw, |
| 1402 | enum set_key_cmd cmd, |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 1403 | struct ieee80211_vif *vif, |
| 1404 | struct ieee80211_sta *sta, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1405 | struct ieee80211_key_conf *key) |
| 1406 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 1407 | struct ath_softc *sc = hw->priv; |
Luis R. Rodriguez | c46917b | 2009-09-13 02:42:02 -0700 | [diff] [blame] | 1408 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1409 | int ret = 0; |
| 1410 | |
John W. Linville | 3e6109c | 2011-01-05 09:39:17 -0500 | [diff] [blame] | 1411 | if (ath9k_modparam_nohwcrypt) |
Jouni Malinen | b3bd89c | 2009-02-24 13:42:01 +0200 | [diff] [blame] | 1412 | return -ENOSPC; |
| 1413 | |
Chun-Yeow Yeoh | 5bd5e9a | 2011-12-07 12:45:46 -0800 | [diff] [blame] | 1414 | if ((vif->type == NL80211_IFTYPE_ADHOC || |
| 1415 | vif->type == NL80211_IFTYPE_MESH_POINT) && |
Jouni Malinen | cfdc9a8 | 2011-03-23 14:52:19 +0200 | [diff] [blame] | 1416 | (key->cipher == WLAN_CIPHER_SUITE_TKIP || |
| 1417 | key->cipher == WLAN_CIPHER_SUITE_CCMP) && |
| 1418 | !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { |
| 1419 | /* |
| 1420 | * For now, disable hw crypto for the RSN IBSS group keys. This |
| 1421 | * could be optimized in the future to use a modified key cache |
| 1422 | * design to support per-STA RX GTK, but until that gets |
| 1423 | * implemented, use of software crypto for group addressed |
| 1424 | * frames is a acceptable to allow RSN IBSS to be used. |
| 1425 | */ |
| 1426 | return -EOPNOTSUPP; |
| 1427 | } |
| 1428 | |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1429 | mutex_lock(&sc->mutex); |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 1430 | ath9k_ps_wakeup(sc); |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 1431 | ath_dbg(common, CONFIG, "Set HW Key\n"); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1432 | |
| 1433 | switch (cmd) { |
| 1434 | case SET_KEY: |
Felix Fietkau | 93ae2dd | 2011-04-17 23:28:10 +0200 | [diff] [blame] | 1435 | if (sta) |
| 1436 | ath9k_del_ps_key(sc, vif, sta); |
| 1437 | |
Bruno Randolf | 040e539 | 2010-09-08 16:05:04 +0900 | [diff] [blame] | 1438 | ret = ath_key_config(common, vif, sta, key); |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 1439 | if (ret >= 0) { |
| 1440 | key->hw_key_idx = ret; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1441 | /* push IV and Michael MIC generation to stack */ |
| 1442 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
Johannes Berg | 97359d1 | 2010-08-10 09:46:38 +0200 | [diff] [blame] | 1443 | if (key->cipher == WLAN_CIPHER_SUITE_TKIP) |
Senthil Balasubramanian | 1b96175 | 2008-09-01 19:45:21 +0530 | [diff] [blame] | 1444 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; |
Johannes Berg | 97359d1 | 2010-08-10 09:46:38 +0200 | [diff] [blame] | 1445 | if (sc->sc_ah->sw_mgmt_crypto && |
| 1446 | key->cipher == WLAN_CIPHER_SUITE_CCMP) |
Jouni Malinen | 0ced0e1 | 2009-01-08 13:32:13 +0200 | [diff] [blame] | 1447 | key->flags |= IEEE80211_KEY_FLAG_SW_MGMT; |
Jouni Malinen | 6ace289 | 2008-12-17 13:32:17 +0200 | [diff] [blame] | 1448 | ret = 0; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1449 | } |
| 1450 | break; |
| 1451 | case DISABLE_KEY: |
Bruno Randolf | 040e539 | 2010-09-08 16:05:04 +0900 | [diff] [blame] | 1452 | ath_key_delete(common, key); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1453 | break; |
| 1454 | default: |
| 1455 | ret = -EINVAL; |
| 1456 | } |
| 1457 | |
Vivek Natarajan | 3cbb5dd | 2009-01-20 11:17:08 +0530 | [diff] [blame] | 1458 | ath9k_ps_restore(sc); |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1459 | mutex_unlock(&sc->mutex); |
| 1460 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1461 | return ret; |
| 1462 | } |
Rajkumar Manoharan | 4f5ef75b | 2011-04-04 22:56:18 +0530 | [diff] [blame] | 1463 | static void ath9k_bss_iter(void *data, u8 *mac, struct ieee80211_vif *vif) |
| 1464 | { |
| 1465 | struct ath_softc *sc = data; |
| 1466 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| 1467 | struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; |
| 1468 | struct ath_vif *avp = (void *)vif->drv_priv; |
Sujith Manoharan | 07c15a3 | 2012-06-04 20:24:07 +0530 | [diff] [blame] | 1469 | unsigned long flags; |
Rajkumar Manoharan | 2e5ef45 | 2011-05-20 17:52:12 +0530 | [diff] [blame] | 1470 | /* |
| 1471 | * Skip iteration if primary station vif's bss info |
| 1472 | * was not changed |
| 1473 | */ |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 1474 | if (test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags)) |
Rajkumar Manoharan | 2e5ef45 | 2011-05-20 17:52:12 +0530 | [diff] [blame] | 1475 | return; |
| 1476 | |
| 1477 | if (bss_conf->assoc) { |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 1478 | set_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags); |
Rajkumar Manoharan | 2e5ef45 | 2011-05-20 17:52:12 +0530 | [diff] [blame] | 1479 | avp->primary_sta_vif = true; |
Rajkumar Manoharan | 4f5ef75b | 2011-04-04 22:56:18 +0530 | [diff] [blame] | 1480 | memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); |
| 1481 | common->curaid = bss_conf->aid; |
| 1482 | ath9k_hw_write_associd(sc->sc_ah); |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 1483 | ath_dbg(common, CONFIG, "Bss Info ASSOC %d, bssid: %pM\n", |
| 1484 | bss_conf->aid, common->curbssid); |
Rajkumar Manoharan | 2e5ef45 | 2011-05-20 17:52:12 +0530 | [diff] [blame] | 1485 | ath_beacon_config(sc, vif); |
| 1486 | /* |
| 1487 | * Request a re-configuration of Beacon related timers |
| 1488 | * on the receipt of the first Beacon frame (i.e., |
| 1489 | * after time sync with the AP). |
| 1490 | */ |
Sujith Manoharan | 07c15a3 | 2012-06-04 20:24:07 +0530 | [diff] [blame] | 1491 | spin_lock_irqsave(&sc->sc_pm_lock, flags); |
Rajkumar Manoharan | 2e5ef45 | 2011-05-20 17:52:12 +0530 | [diff] [blame] | 1492 | sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON; |
Sujith Manoharan | 07c15a3 | 2012-06-04 20:24:07 +0530 | [diff] [blame] | 1493 | spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
| 1494 | |
Rajkumar Manoharan | 2e5ef45 | 2011-05-20 17:52:12 +0530 | [diff] [blame] | 1495 | /* Reset rssi stats */ |
| 1496 | sc->last_rssi = ATH_RSSI_DUMMY_MARKER; |
| 1497 | sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER; |
Rajkumar Manoharan | 99e4d43 | 2011-04-04 22:56:19 +0530 | [diff] [blame] | 1498 | |
Rajkumar Manoharan | 01e1891 | 2012-03-15 05:34:27 +0530 | [diff] [blame] | 1499 | ath_start_rx_poll(sc, 3); |
| 1500 | |
Mohammed Shafi Shajakhan | 05c0be2 | 2011-05-26 10:56:15 +0530 | [diff] [blame] | 1501 | if (!common->disable_ani) { |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 1502 | set_bit(SC_OP_ANI_RUN, &sc->sc_flags); |
Mohammed Shafi Shajakhan | 05c0be2 | 2011-05-26 10:56:15 +0530 | [diff] [blame] | 1503 | ath_start_ani(common); |
| 1504 | } |
| 1505 | |
Rajkumar Manoharan | 4f5ef75b | 2011-04-04 22:56:18 +0530 | [diff] [blame] | 1506 | } |
| 1507 | } |
| 1508 | |
| 1509 | static void ath9k_config_bss(struct ath_softc *sc, struct ieee80211_vif *vif) |
| 1510 | { |
| 1511 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| 1512 | struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; |
| 1513 | struct ath_vif *avp = (void *)vif->drv_priv; |
| 1514 | |
Rajkumar Manoharan | 2e5ef45 | 2011-05-20 17:52:12 +0530 | [diff] [blame] | 1515 | if (sc->sc_ah->opmode != NL80211_IFTYPE_STATION) |
| 1516 | return; |
| 1517 | |
Rajkumar Manoharan | 4f5ef75b | 2011-04-04 22:56:18 +0530 | [diff] [blame] | 1518 | /* Reconfigure bss info */ |
| 1519 | if (avp->primary_sta_vif && !bss_conf->assoc) { |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 1520 | ath_dbg(common, CONFIG, "Bss Info DISASSOC %d, bssid %pM\n", |
Rajkumar Manoharan | 99e4d43 | 2011-04-04 22:56:19 +0530 | [diff] [blame] | 1521 | common->curaid, common->curbssid); |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 1522 | clear_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags); |
| 1523 | clear_bit(SC_OP_BEACONS, &sc->sc_flags); |
Rajkumar Manoharan | 4f5ef75b | 2011-04-04 22:56:18 +0530 | [diff] [blame] | 1524 | avp->primary_sta_vif = false; |
| 1525 | memset(common->curbssid, 0, ETH_ALEN); |
| 1526 | common->curaid = 0; |
| 1527 | } |
| 1528 | |
| 1529 | ieee80211_iterate_active_interfaces_atomic( |
| 1530 | sc->hw, ath9k_bss_iter, sc); |
| 1531 | |
| 1532 | /* |
| 1533 | * None of station vifs are associated. |
| 1534 | * Clear bssid & aid |
| 1535 | */ |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 1536 | if (!test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags)) { |
Rajkumar Manoharan | 4f5ef75b | 2011-04-04 22:56:18 +0530 | [diff] [blame] | 1537 | ath9k_hw_write_associd(sc->sc_ah); |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 1538 | clear_bit(SC_OP_ANI_RUN, &sc->sc_flags); |
Rajkumar Manoharan | 99e4d43 | 2011-04-04 22:56:19 +0530 | [diff] [blame] | 1539 | del_timer_sync(&common->ani.timer); |
Rajkumar Manoharan | 01e1891 | 2012-03-15 05:34:27 +0530 | [diff] [blame] | 1540 | del_timer_sync(&sc->rx_poll_timer); |
Rajkumar Manoharan | d2c71c2 | 2011-09-15 19:02:54 +0530 | [diff] [blame] | 1541 | memset(&sc->caldata, 0, sizeof(sc->caldata)); |
Rajkumar Manoharan | 99e4d43 | 2011-04-04 22:56:19 +0530 | [diff] [blame] | 1542 | } |
Rajkumar Manoharan | 4f5ef75b | 2011-04-04 22:56:18 +0530 | [diff] [blame] | 1543 | } |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1544 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1545 | static void ath9k_bss_info_changed(struct ieee80211_hw *hw, |
| 1546 | struct ieee80211_vif *vif, |
| 1547 | struct ieee80211_bss_conf *bss_conf, |
| 1548 | u32 changed) |
| 1549 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 1550 | struct ath_softc *sc = hw->priv; |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 1551 | struct ath_hw *ah = sc->sc_ah; |
Luis R. Rodriguez | 1510718 | 2009-09-10 09:22:37 -0700 | [diff] [blame] | 1552 | struct ath_common *common = ath9k_hw_common(ah); |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 1553 | struct ath_vif *avp = (void *)vif->drv_priv; |
Felix Fietkau | 0005baf | 2010-01-15 02:33:40 +0100 | [diff] [blame] | 1554 | int slottime; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1555 | |
Felix Fietkau | 96f372c | 2011-04-07 19:07:17 +0200 | [diff] [blame] | 1556 | ath9k_ps_wakeup(sc); |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1557 | mutex_lock(&sc->mutex); |
| 1558 | |
Rajkumar Manoharan | 9f61903 | 2012-03-10 05:06:49 +0530 | [diff] [blame] | 1559 | if (changed & BSS_CHANGED_ASSOC) { |
Rajkumar Manoharan | 4f5ef75b | 2011-04-04 22:56:18 +0530 | [diff] [blame] | 1560 | ath9k_config_bss(sc, vif); |
Sujith | c6089cc | 2009-11-16 11:40:48 +0530 | [diff] [blame] | 1561 | |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 1562 | ath_dbg(common, CONFIG, "BSSID: %pM aid: 0x%x\n", |
Joe Perches | 226afe6 | 2010-12-02 19:12:37 -0800 | [diff] [blame] | 1563 | common->curbssid, common->curaid); |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 1564 | } |
| 1565 | |
Rajkumar Manoharan | 2e5ef45 | 2011-05-20 17:52:12 +0530 | [diff] [blame] | 1566 | if (changed & BSS_CHANGED_IBSS) { |
| 1567 | /* There can be only one vif available */ |
| 1568 | memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); |
| 1569 | common->curaid = bss_conf->aid; |
| 1570 | ath9k_hw_write_associd(sc->sc_ah); |
| 1571 | |
| 1572 | if (bss_conf->ibss_joined) { |
| 1573 | sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER; |
Mohammed Shafi Shajakhan | 05c0be2 | 2011-05-26 10:56:15 +0530 | [diff] [blame] | 1574 | |
| 1575 | if (!common->disable_ani) { |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 1576 | set_bit(SC_OP_ANI_RUN, &sc->sc_flags); |
Mohammed Shafi Shajakhan | 05c0be2 | 2011-05-26 10:56:15 +0530 | [diff] [blame] | 1577 | ath_start_ani(common); |
| 1578 | } |
| 1579 | |
Rajkumar Manoharan | 2e5ef45 | 2011-05-20 17:52:12 +0530 | [diff] [blame] | 1580 | } else { |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 1581 | clear_bit(SC_OP_ANI_RUN, &sc->sc_flags); |
Rajkumar Manoharan | 2e5ef45 | 2011-05-20 17:52:12 +0530 | [diff] [blame] | 1582 | del_timer_sync(&common->ani.timer); |
Rajkumar Manoharan | 01e1891 | 2012-03-15 05:34:27 +0530 | [diff] [blame] | 1583 | del_timer_sync(&sc->rx_poll_timer); |
Rajkumar Manoharan | 2e5ef45 | 2011-05-20 17:52:12 +0530 | [diff] [blame] | 1584 | } |
| 1585 | } |
| 1586 | |
Rajkumar Manoharan | ed2578c | 2012-04-19 19:13:51 +0530 | [diff] [blame] | 1587 | /* |
| 1588 | * In case of AP mode, the HW TSF has to be reset |
| 1589 | * when the beacon interval changes. |
| 1590 | */ |
| 1591 | if ((changed & BSS_CHANGED_BEACON_INT) && |
| 1592 | (vif->type == NL80211_IFTYPE_AP)) |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 1593 | set_bit(SC_OP_TSF_RESET, &sc->sc_flags); |
Rajkumar Manoharan | ed2578c | 2012-04-19 19:13:51 +0530 | [diff] [blame] | 1594 | |
| 1595 | /* Configure beaconing (AP, IBSS, MESH) */ |
| 1596 | if (ath9k_uses_beacons(vif->type) && |
| 1597 | ((changed & BSS_CHANGED_BEACON) || |
| 1598 | (changed & BSS_CHANGED_BEACON_ENABLED) || |
| 1599 | (changed & BSS_CHANGED_BEACON_INT))) { |
Rajkumar Manoharan | 014cf3b | 2011-02-09 17:46:39 +0530 | [diff] [blame] | 1600 | ath9k_set_beaconing_status(sc, false); |
Rajkumar Manoharan | ed2578c | 2012-04-19 19:13:51 +0530 | [diff] [blame] | 1601 | if (bss_conf->enable_beacon) |
| 1602 | ath_beacon_alloc(sc, vif); |
| 1603 | else |
| 1604 | avp->is_bslot_active = false; |
| 1605 | ath_beacon_config(sc, vif); |
Rajkumar Manoharan | 014cf3b | 2011-02-09 17:46:39 +0530 | [diff] [blame] | 1606 | ath9k_set_beaconing_status(sc, true); |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 1607 | } |
| 1608 | |
Felix Fietkau | 0005baf | 2010-01-15 02:33:40 +0100 | [diff] [blame] | 1609 | if (changed & BSS_CHANGED_ERP_SLOT) { |
| 1610 | if (bss_conf->use_short_slot) |
| 1611 | slottime = 9; |
| 1612 | else |
| 1613 | slottime = 20; |
| 1614 | if (vif->type == NL80211_IFTYPE_AP) { |
| 1615 | /* |
| 1616 | * Defer update, so that connected stations can adjust |
| 1617 | * their settings at the same time. |
| 1618 | * See beacon.c for more details |
| 1619 | */ |
| 1620 | sc->beacon.slottime = slottime; |
| 1621 | sc->beacon.updateslot = UPDATE; |
| 1622 | } else { |
| 1623 | ah->slottime = slottime; |
| 1624 | ath9k_hw_init_global_settings(ah); |
| 1625 | } |
| 1626 | } |
| 1627 | |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1628 | mutex_unlock(&sc->mutex); |
Felix Fietkau | 96f372c | 2011-04-07 19:07:17 +0200 | [diff] [blame] | 1629 | ath9k_ps_restore(sc); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1630 | } |
| 1631 | |
Eliad Peller | 37a41b4 | 2011-09-21 14:06:11 +0300 | [diff] [blame] | 1632 | static u64 ath9k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1633 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 1634 | struct ath_softc *sc = hw->priv; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1635 | u64 tsf; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1636 | |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1637 | mutex_lock(&sc->mutex); |
Sujith Manoharan | 9abbfb2 | 2010-12-10 11:27:06 +0530 | [diff] [blame] | 1638 | ath9k_ps_wakeup(sc); |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1639 | tsf = ath9k_hw_gettsf64(sc->sc_ah); |
Sujith Manoharan | 9abbfb2 | 2010-12-10 11:27:06 +0530 | [diff] [blame] | 1640 | ath9k_ps_restore(sc); |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1641 | mutex_unlock(&sc->mutex); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1642 | |
| 1643 | return tsf; |
| 1644 | } |
| 1645 | |
Eliad Peller | 37a41b4 | 2011-09-21 14:06:11 +0300 | [diff] [blame] | 1646 | static void ath9k_set_tsf(struct ieee80211_hw *hw, |
| 1647 | struct ieee80211_vif *vif, |
| 1648 | u64 tsf) |
Alina Friedrichsen | 3b5d665 | 2009-01-24 07:09:59 +0100 | [diff] [blame] | 1649 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 1650 | struct ath_softc *sc = hw->priv; |
Alina Friedrichsen | 3b5d665 | 2009-01-24 07:09:59 +0100 | [diff] [blame] | 1651 | |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1652 | mutex_lock(&sc->mutex); |
Sujith Manoharan | 9abbfb2 | 2010-12-10 11:27:06 +0530 | [diff] [blame] | 1653 | ath9k_ps_wakeup(sc); |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1654 | ath9k_hw_settsf64(sc->sc_ah, tsf); |
Sujith Manoharan | 9abbfb2 | 2010-12-10 11:27:06 +0530 | [diff] [blame] | 1655 | ath9k_ps_restore(sc); |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1656 | mutex_unlock(&sc->mutex); |
Alina Friedrichsen | 3b5d665 | 2009-01-24 07:09:59 +0100 | [diff] [blame] | 1657 | } |
| 1658 | |
Eliad Peller | 37a41b4 | 2011-09-21 14:06:11 +0300 | [diff] [blame] | 1659 | static void ath9k_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1660 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 1661 | struct ath_softc *sc = hw->priv; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1662 | |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1663 | mutex_lock(&sc->mutex); |
Luis R. Rodriguez | 21526d5 | 2009-09-09 20:05:39 -0700 | [diff] [blame] | 1664 | |
| 1665 | ath9k_ps_wakeup(sc); |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1666 | ath9k_hw_reset_tsf(sc->sc_ah); |
Luis R. Rodriguez | 21526d5 | 2009-09-09 20:05:39 -0700 | [diff] [blame] | 1667 | ath9k_ps_restore(sc); |
| 1668 | |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1669 | mutex_unlock(&sc->mutex); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1670 | } |
| 1671 | |
| 1672 | static int ath9k_ampdu_action(struct ieee80211_hw *hw, |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 1673 | struct ieee80211_vif *vif, |
Sujith | 141b38b | 2009-02-04 08:10:07 +0530 | [diff] [blame] | 1674 | enum ieee80211_ampdu_mlme_action action, |
| 1675 | struct ieee80211_sta *sta, |
Johannes Berg | 0b01f03 | 2011-01-18 13:51:05 +0100 | [diff] [blame] | 1676 | u16 tid, u16 *ssn, u8 buf_size) |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1677 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 1678 | struct ath_softc *sc = hw->priv; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1679 | int ret = 0; |
| 1680 | |
Johannes Berg | 85ad181 | 2010-06-10 10:21:49 +0200 | [diff] [blame] | 1681 | local_bh_disable(); |
| 1682 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1683 | switch (action) { |
| 1684 | case IEEE80211_AMPDU_RX_START: |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1685 | break; |
| 1686 | case IEEE80211_AMPDU_RX_STOP: |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1687 | break; |
| 1688 | case IEEE80211_AMPDU_TX_START: |
Luis R. Rodriguez | 8b685ba | 2009-12-23 20:03:29 -0500 | [diff] [blame] | 1689 | ath9k_ps_wakeup(sc); |
Felix Fietkau | 231c3a1 | 2010-09-20 19:35:28 +0200 | [diff] [blame] | 1690 | ret = ath_tx_aggr_start(sc, sta, tid, ssn); |
| 1691 | if (!ret) |
| 1692 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
Luis R. Rodriguez | 8b685ba | 2009-12-23 20:03:29 -0500 | [diff] [blame] | 1693 | ath9k_ps_restore(sc); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1694 | break; |
| 1695 | case IEEE80211_AMPDU_TX_STOP: |
Luis R. Rodriguez | 8b685ba | 2009-12-23 20:03:29 -0500 | [diff] [blame] | 1696 | ath9k_ps_wakeup(sc); |
Sujith | f83da96 | 2009-07-23 15:32:37 +0530 | [diff] [blame] | 1697 | ath_tx_aggr_stop(sc, sta, tid); |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 1698 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
Luis R. Rodriguez | 8b685ba | 2009-12-23 20:03:29 -0500 | [diff] [blame] | 1699 | ath9k_ps_restore(sc); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1700 | break; |
Johannes Berg | b172023 | 2009-03-23 17:28:39 +0100 | [diff] [blame] | 1701 | case IEEE80211_AMPDU_TX_OPERATIONAL: |
Luis R. Rodriguez | 8b685ba | 2009-12-23 20:03:29 -0500 | [diff] [blame] | 1702 | ath9k_ps_wakeup(sc); |
Sujith | 8469cde | 2008-10-29 10:19:28 +0530 | [diff] [blame] | 1703 | ath_tx_aggr_resume(sc, sta, tid); |
Luis R. Rodriguez | 8b685ba | 2009-12-23 20:03:29 -0500 | [diff] [blame] | 1704 | ath9k_ps_restore(sc); |
Sujith | 8469cde | 2008-10-29 10:19:28 +0530 | [diff] [blame] | 1705 | break; |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1706 | default: |
Joe Perches | 3800276 | 2010-12-02 19:12:36 -0800 | [diff] [blame] | 1707 | ath_err(ath9k_hw_common(sc->sc_ah), "Unknown AMPDU action\n"); |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1708 | } |
| 1709 | |
Johannes Berg | 85ad181 | 2010-06-10 10:21:49 +0200 | [diff] [blame] | 1710 | local_bh_enable(); |
| 1711 | |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 1712 | return ret; |
| 1713 | } |
| 1714 | |
Benoit Papillault | 62dad5b | 2010-04-28 00:08:24 +0200 | [diff] [blame] | 1715 | static int ath9k_get_survey(struct ieee80211_hw *hw, int idx, |
| 1716 | struct survey_info *survey) |
| 1717 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 1718 | struct ath_softc *sc = hw->priv; |
Felix Fietkau | 3430098 | 2010-10-10 18:21:52 +0200 | [diff] [blame] | 1719 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
Felix Fietkau | 39162db | 2010-09-29 19:12:06 +0200 | [diff] [blame] | 1720 | struct ieee80211_supported_band *sband; |
Felix Fietkau | 3430098 | 2010-10-10 18:21:52 +0200 | [diff] [blame] | 1721 | struct ieee80211_channel *chan; |
| 1722 | unsigned long flags; |
| 1723 | int pos; |
| 1724 | |
| 1725 | spin_lock_irqsave(&common->cc_lock, flags); |
| 1726 | if (idx == 0) |
| 1727 | ath_update_survey_stats(sc); |
Benoit Papillault | 62dad5b | 2010-04-28 00:08:24 +0200 | [diff] [blame] | 1728 | |
Felix Fietkau | 39162db | 2010-09-29 19:12:06 +0200 | [diff] [blame] | 1729 | sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ]; |
| 1730 | if (sband && idx >= sband->n_channels) { |
| 1731 | idx -= sband->n_channels; |
| 1732 | sband = NULL; |
| 1733 | } |
Benoit Papillault | 62dad5b | 2010-04-28 00:08:24 +0200 | [diff] [blame] | 1734 | |
Felix Fietkau | 39162db | 2010-09-29 19:12:06 +0200 | [diff] [blame] | 1735 | if (!sband) |
| 1736 | sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ]; |
| 1737 | |
Felix Fietkau | 3430098 | 2010-10-10 18:21:52 +0200 | [diff] [blame] | 1738 | if (!sband || idx >= sband->n_channels) { |
| 1739 | spin_unlock_irqrestore(&common->cc_lock, flags); |
| 1740 | return -ENOENT; |
Felix Fietkau | 4f1a5a4 | 2010-09-29 17:15:28 +0200 | [diff] [blame] | 1741 | } |
Benoit Papillault | 62dad5b | 2010-04-28 00:08:24 +0200 | [diff] [blame] | 1742 | |
Felix Fietkau | 3430098 | 2010-10-10 18:21:52 +0200 | [diff] [blame] | 1743 | chan = &sband->channels[idx]; |
| 1744 | pos = chan->hw_value; |
| 1745 | memcpy(survey, &sc->survey[pos], sizeof(*survey)); |
| 1746 | survey->channel = chan; |
| 1747 | spin_unlock_irqrestore(&common->cc_lock, flags); |
| 1748 | |
Benoit Papillault | 62dad5b | 2010-04-28 00:08:24 +0200 | [diff] [blame] | 1749 | return 0; |
| 1750 | } |
| 1751 | |
Felix Fietkau | e239d85 | 2010-01-15 02:34:58 +0100 | [diff] [blame] | 1752 | static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class) |
| 1753 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 1754 | struct ath_softc *sc = hw->priv; |
Felix Fietkau | e239d85 | 2010-01-15 02:34:58 +0100 | [diff] [blame] | 1755 | struct ath_hw *ah = sc->sc_ah; |
| 1756 | |
| 1757 | mutex_lock(&sc->mutex); |
| 1758 | ah->coverage_class = coverage_class; |
Mohammed Shafi Shajakhan | 8b2a3827 | 2011-08-24 21:38:07 +0530 | [diff] [blame] | 1759 | |
| 1760 | ath9k_ps_wakeup(sc); |
Felix Fietkau | e239d85 | 2010-01-15 02:34:58 +0100 | [diff] [blame] | 1761 | ath9k_hw_init_global_settings(ah); |
Mohammed Shafi Shajakhan | 8b2a3827 | 2011-08-24 21:38:07 +0530 | [diff] [blame] | 1762 | ath9k_ps_restore(sc); |
| 1763 | |
Felix Fietkau | e239d85 | 2010-01-15 02:34:58 +0100 | [diff] [blame] | 1764 | mutex_unlock(&sc->mutex); |
| 1765 | } |
| 1766 | |
Vasanthakumar Thiagarajan | 6908162 | 2011-02-19 01:13:42 -0800 | [diff] [blame] | 1767 | static void ath9k_flush(struct ieee80211_hw *hw, bool drop) |
| 1768 | { |
Vasanthakumar Thiagarajan | 6908162 | 2011-02-19 01:13:42 -0800 | [diff] [blame] | 1769 | struct ath_softc *sc = hw->priv; |
Mohammed Shafi Shajakhan | 99aa55b | 2011-05-06 20:43:11 +0530 | [diff] [blame] | 1770 | struct ath_hw *ah = sc->sc_ah; |
| 1771 | struct ath_common *common = ath9k_hw_common(ah); |
Felix Fietkau | 86271e4 | 2011-03-11 21:38:19 +0100 | [diff] [blame] | 1772 | int timeout = 200; /* ms */ |
| 1773 | int i, j; |
Rajkumar Manoharan | 2f6fc35 | 2011-04-28 15:31:57 +0530 | [diff] [blame] | 1774 | bool drain_txq; |
Vasanthakumar Thiagarajan | 6908162 | 2011-02-19 01:13:42 -0800 | [diff] [blame] | 1775 | |
| 1776 | mutex_lock(&sc->mutex); |
Vasanthakumar Thiagarajan | 6908162 | 2011-02-19 01:13:42 -0800 | [diff] [blame] | 1777 | cancel_delayed_work_sync(&sc->tx_complete_work); |
| 1778 | |
Mohammed Shafi Shajakhan | 6a6b3f3 | 2011-09-09 10:41:08 +0530 | [diff] [blame] | 1779 | if (ah->ah_flags & AH_UNPLUGGED) { |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 1780 | ath_dbg(common, ANY, "Device has been unplugged!\n"); |
Mohammed Shafi Shajakhan | 6a6b3f3 | 2011-09-09 10:41:08 +0530 | [diff] [blame] | 1781 | mutex_unlock(&sc->mutex); |
| 1782 | return; |
| 1783 | } |
| 1784 | |
Sujith Manoharan | 781b14a | 2012-06-04 20:23:55 +0530 | [diff] [blame] | 1785 | if (test_bit(SC_OP_INVALID, &sc->sc_flags)) { |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 1786 | ath_dbg(common, ANY, "Device not present\n"); |
Mohammed Shafi Shajakhan | 99aa55b | 2011-05-06 20:43:11 +0530 | [diff] [blame] | 1787 | mutex_unlock(&sc->mutex); |
| 1788 | return; |
| 1789 | } |
| 1790 | |
Felix Fietkau | 86271e4 | 2011-03-11 21:38:19 +0100 | [diff] [blame] | 1791 | for (j = 0; j < timeout; j++) { |
Mohammed Shafi Shajakhan | 108697c | 2011-05-13 20:59:42 +0530 | [diff] [blame] | 1792 | bool npend = false; |
Felix Fietkau | 86271e4 | 2011-03-11 21:38:19 +0100 | [diff] [blame] | 1793 | |
| 1794 | if (j) |
| 1795 | usleep_range(1000, 2000); |
| 1796 | |
| 1797 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) { |
| 1798 | if (!ATH_TXQ_SETUP(sc, i)) |
| 1799 | continue; |
| 1800 | |
Mohammed Shafi Shajakhan | 108697c | 2011-05-13 20:59:42 +0530 | [diff] [blame] | 1801 | npend = ath9k_has_pending_frames(sc, &sc->tx.txq[i]); |
| 1802 | |
| 1803 | if (npend) |
| 1804 | break; |
Vasanthakumar Thiagarajan | 6908162 | 2011-02-19 01:13:42 -0800 | [diff] [blame] | 1805 | } |
| 1806 | |
Felix Fietkau | 86271e4 | 2011-03-11 21:38:19 +0100 | [diff] [blame] | 1807 | if (!npend) |
Felix Fietkau | 9df0d6a | 2011-11-16 13:08:42 +0100 | [diff] [blame] | 1808 | break; |
Vasanthakumar Thiagarajan | 6908162 | 2011-02-19 01:13:42 -0800 | [diff] [blame] | 1809 | } |
| 1810 | |
Felix Fietkau | 9df0d6a | 2011-11-16 13:08:42 +0100 | [diff] [blame] | 1811 | if (drop) { |
| 1812 | ath9k_ps_wakeup(sc); |
| 1813 | spin_lock_bh(&sc->sc_pcu_lock); |
| 1814 | drain_txq = ath_drain_all_txq(sc, false); |
| 1815 | spin_unlock_bh(&sc->sc_pcu_lock); |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 1816 | |
Felix Fietkau | 9df0d6a | 2011-11-16 13:08:42 +0100 | [diff] [blame] | 1817 | if (!drain_txq) |
| 1818 | ath_reset(sc, false); |
Felix Fietkau | 9adcf44 | 2011-09-03 01:40:26 +0200 | [diff] [blame] | 1819 | |
Felix Fietkau | 9df0d6a | 2011-11-16 13:08:42 +0100 | [diff] [blame] | 1820 | ath9k_ps_restore(sc); |
| 1821 | ieee80211_wake_queues(hw); |
| 1822 | } |
Senthil Balasubramanian | d78f4b3 | 2011-03-23 23:07:22 +0530 | [diff] [blame] | 1823 | |
Vasanthakumar Thiagarajan | 6908162 | 2011-02-19 01:13:42 -0800 | [diff] [blame] | 1824 | ieee80211_queue_delayed_work(hw, &sc->tx_complete_work, 0); |
| 1825 | mutex_unlock(&sc->mutex); |
| 1826 | } |
| 1827 | |
Vivek Natarajan | 15b91e8 | 2011-04-06 11:41:11 +0530 | [diff] [blame] | 1828 | static bool ath9k_tx_frames_pending(struct ieee80211_hw *hw) |
| 1829 | { |
| 1830 | struct ath_softc *sc = hw->priv; |
| 1831 | int i; |
| 1832 | |
| 1833 | for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) { |
| 1834 | if (!ATH_TXQ_SETUP(sc, i)) |
| 1835 | continue; |
| 1836 | |
| 1837 | if (ath9k_has_pending_frames(sc, &sc->tx.txq[i])) |
| 1838 | return true; |
| 1839 | } |
| 1840 | return false; |
| 1841 | } |
| 1842 | |
Mohammed Shafi Shajakhan | 5595f11 | 2011-05-19 18:08:57 +0530 | [diff] [blame] | 1843 | static int ath9k_tx_last_beacon(struct ieee80211_hw *hw) |
Felix Fietkau | ba4903f | 2011-05-17 21:09:54 +0200 | [diff] [blame] | 1844 | { |
| 1845 | struct ath_softc *sc = hw->priv; |
| 1846 | struct ath_hw *ah = sc->sc_ah; |
| 1847 | struct ieee80211_vif *vif; |
| 1848 | struct ath_vif *avp; |
| 1849 | struct ath_buf *bf; |
| 1850 | struct ath_tx_status ts; |
Felix Fietkau | 4286df6 | 2012-02-27 19:58:40 +0100 | [diff] [blame] | 1851 | bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA); |
Felix Fietkau | ba4903f | 2011-05-17 21:09:54 +0200 | [diff] [blame] | 1852 | int status; |
| 1853 | |
| 1854 | vif = sc->beacon.bslot[0]; |
| 1855 | if (!vif) |
| 1856 | return 0; |
| 1857 | |
| 1858 | avp = (void *)vif->drv_priv; |
| 1859 | if (!avp->is_bslot_active) |
| 1860 | return 0; |
| 1861 | |
Felix Fietkau | 4286df6 | 2012-02-27 19:58:40 +0100 | [diff] [blame] | 1862 | if (!sc->beacon.tx_processed && !edma) { |
Felix Fietkau | ba4903f | 2011-05-17 21:09:54 +0200 | [diff] [blame] | 1863 | tasklet_disable(&sc->bcon_tasklet); |
| 1864 | |
| 1865 | bf = avp->av_bcbuf; |
| 1866 | if (!bf || !bf->bf_mpdu) |
| 1867 | goto skip; |
| 1868 | |
| 1869 | status = ath9k_hw_txprocdesc(ah, bf->bf_desc, &ts); |
| 1870 | if (status == -EINPROGRESS) |
| 1871 | goto skip; |
| 1872 | |
| 1873 | sc->beacon.tx_processed = true; |
| 1874 | sc->beacon.tx_last = !(ts.ts_status & ATH9K_TXERR_MASK); |
| 1875 | |
| 1876 | skip: |
| 1877 | tasklet_enable(&sc->bcon_tasklet); |
| 1878 | } |
| 1879 | |
| 1880 | return sc->beacon.tx_last; |
| 1881 | } |
| 1882 | |
Mohammed Shafi Shajakhan | 52c94f4 | 2011-08-20 17:21:42 +0530 | [diff] [blame] | 1883 | static int ath9k_get_stats(struct ieee80211_hw *hw, |
| 1884 | struct ieee80211_low_level_stats *stats) |
| 1885 | { |
| 1886 | struct ath_softc *sc = hw->priv; |
| 1887 | struct ath_hw *ah = sc->sc_ah; |
| 1888 | struct ath9k_mib_stats *mib_stats = &ah->ah_mibStats; |
| 1889 | |
| 1890 | stats->dot11ACKFailureCount = mib_stats->ackrcv_bad; |
| 1891 | stats->dot11RTSFailureCount = mib_stats->rts_bad; |
| 1892 | stats->dot11FCSErrorCount = mib_stats->fcs_bad; |
| 1893 | stats->dot11RTSSuccessCount = mib_stats->rts_good; |
| 1894 | return 0; |
| 1895 | } |
| 1896 | |
Felix Fietkau | 43c3528 | 2011-09-03 01:40:27 +0200 | [diff] [blame] | 1897 | static u32 fill_chainmask(u32 cap, u32 new) |
| 1898 | { |
| 1899 | u32 filled = 0; |
| 1900 | int i; |
| 1901 | |
| 1902 | for (i = 0; cap && new; i++, cap >>= 1) { |
| 1903 | if (!(cap & BIT(0))) |
| 1904 | continue; |
| 1905 | |
| 1906 | if (new & BIT(0)) |
| 1907 | filled |= BIT(i); |
| 1908 | |
| 1909 | new >>= 1; |
| 1910 | } |
| 1911 | |
| 1912 | return filled; |
| 1913 | } |
| 1914 | |
| 1915 | static int ath9k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant) |
| 1916 | { |
| 1917 | struct ath_softc *sc = hw->priv; |
| 1918 | struct ath_hw *ah = sc->sc_ah; |
| 1919 | |
| 1920 | if (!rx_ant || !tx_ant) |
| 1921 | return -EINVAL; |
| 1922 | |
| 1923 | sc->ant_rx = rx_ant; |
| 1924 | sc->ant_tx = tx_ant; |
| 1925 | |
| 1926 | if (ah->caps.rx_chainmask == 1) |
| 1927 | return 0; |
| 1928 | |
| 1929 | /* AR9100 runs into calibration issues if not all rx chains are enabled */ |
| 1930 | if (AR_SREV_9100(ah)) |
| 1931 | ah->rxchainmask = 0x7; |
| 1932 | else |
| 1933 | ah->rxchainmask = fill_chainmask(ah->caps.rx_chainmask, rx_ant); |
| 1934 | |
| 1935 | ah->txchainmask = fill_chainmask(ah->caps.tx_chainmask, tx_ant); |
| 1936 | ath9k_reload_chainmask_settings(sc); |
| 1937 | |
| 1938 | return 0; |
| 1939 | } |
| 1940 | |
| 1941 | static int ath9k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) |
| 1942 | { |
| 1943 | struct ath_softc *sc = hw->priv; |
| 1944 | |
| 1945 | *tx_ant = sc->ant_tx; |
| 1946 | *rx_ant = sc->ant_rx; |
| 1947 | return 0; |
| 1948 | } |
| 1949 | |
Ben Greear | b90bd9d | 2012-05-15 15:33:25 -0700 | [diff] [blame] | 1950 | #ifdef CONFIG_ATH9K_DEBUGFS |
| 1951 | |
| 1952 | /* Ethtool support for get-stats */ |
| 1953 | |
| 1954 | #define AMKSTR(nm) #nm "_BE", #nm "_BK", #nm "_VI", #nm "_VO" |
| 1955 | static const char ath9k_gstrings_stats[][ETH_GSTRING_LEN] = { |
| 1956 | "tx_pkts_nic", |
| 1957 | "tx_bytes_nic", |
| 1958 | "rx_pkts_nic", |
| 1959 | "rx_bytes_nic", |
| 1960 | AMKSTR(d_tx_pkts), |
| 1961 | AMKSTR(d_tx_bytes), |
| 1962 | AMKSTR(d_tx_mpdus_queued), |
| 1963 | AMKSTR(d_tx_mpdus_completed), |
| 1964 | AMKSTR(d_tx_mpdu_xretries), |
| 1965 | AMKSTR(d_tx_aggregates), |
| 1966 | AMKSTR(d_tx_ampdus_queued_hw), |
| 1967 | AMKSTR(d_tx_ampdus_queued_sw), |
| 1968 | AMKSTR(d_tx_ampdus_completed), |
| 1969 | AMKSTR(d_tx_ampdu_retries), |
| 1970 | AMKSTR(d_tx_ampdu_xretries), |
| 1971 | AMKSTR(d_tx_fifo_underrun), |
| 1972 | AMKSTR(d_tx_op_exceeded), |
| 1973 | AMKSTR(d_tx_timer_expiry), |
| 1974 | AMKSTR(d_tx_desc_cfg_err), |
| 1975 | AMKSTR(d_tx_data_underrun), |
| 1976 | AMKSTR(d_tx_delim_underrun), |
| 1977 | |
| 1978 | "d_rx_decrypt_crc_err", |
| 1979 | "d_rx_phy_err", |
| 1980 | "d_rx_mic_err", |
| 1981 | "d_rx_pre_delim_crc_err", |
| 1982 | "d_rx_post_delim_crc_err", |
| 1983 | "d_rx_decrypt_busy_err", |
| 1984 | |
| 1985 | "d_rx_phyerr_radar", |
| 1986 | "d_rx_phyerr_ofdm_timing", |
| 1987 | "d_rx_phyerr_cck_timing", |
| 1988 | |
| 1989 | }; |
| 1990 | #define ATH9K_SSTATS_LEN ARRAY_SIZE(ath9k_gstrings_stats) |
| 1991 | |
| 1992 | static void ath9k_get_et_strings(struct ieee80211_hw *hw, |
| 1993 | struct ieee80211_vif *vif, |
| 1994 | u32 sset, u8 *data) |
| 1995 | { |
| 1996 | if (sset == ETH_SS_STATS) |
| 1997 | memcpy(data, *ath9k_gstrings_stats, |
| 1998 | sizeof(ath9k_gstrings_stats)); |
| 1999 | } |
| 2000 | |
| 2001 | static int ath9k_get_et_sset_count(struct ieee80211_hw *hw, |
| 2002 | struct ieee80211_vif *vif, int sset) |
| 2003 | { |
| 2004 | if (sset == ETH_SS_STATS) |
| 2005 | return ATH9K_SSTATS_LEN; |
| 2006 | return 0; |
| 2007 | } |
| 2008 | |
| 2009 | #define PR_QNUM(_n) (sc->tx.txq_map[_n]->axq_qnum) |
| 2010 | #define AWDATA(elem) \ |
| 2011 | do { \ |
| 2012 | data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_BE)].elem; \ |
| 2013 | data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_BK)].elem; \ |
| 2014 | data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_VI)].elem; \ |
| 2015 | data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_VO)].elem; \ |
| 2016 | } while (0) |
| 2017 | |
| 2018 | #define AWDATA_RX(elem) \ |
| 2019 | do { \ |
| 2020 | data[i++] = sc->debug.stats.rxstats.elem; \ |
| 2021 | } while (0) |
| 2022 | |
| 2023 | static void ath9k_get_et_stats(struct ieee80211_hw *hw, |
| 2024 | struct ieee80211_vif *vif, |
| 2025 | struct ethtool_stats *stats, u64 *data) |
| 2026 | { |
| 2027 | struct ath_softc *sc = hw->priv; |
| 2028 | int i = 0; |
| 2029 | |
| 2030 | data[i++] = (sc->debug.stats.txstats[PR_QNUM(WME_AC_BE)].tx_pkts_all + |
| 2031 | sc->debug.stats.txstats[PR_QNUM(WME_AC_BK)].tx_pkts_all + |
| 2032 | sc->debug.stats.txstats[PR_QNUM(WME_AC_VI)].tx_pkts_all + |
| 2033 | sc->debug.stats.txstats[PR_QNUM(WME_AC_VO)].tx_pkts_all); |
| 2034 | data[i++] = (sc->debug.stats.txstats[PR_QNUM(WME_AC_BE)].tx_bytes_all + |
| 2035 | sc->debug.stats.txstats[PR_QNUM(WME_AC_BK)].tx_bytes_all + |
| 2036 | sc->debug.stats.txstats[PR_QNUM(WME_AC_VI)].tx_bytes_all + |
| 2037 | sc->debug.stats.txstats[PR_QNUM(WME_AC_VO)].tx_bytes_all); |
| 2038 | AWDATA_RX(rx_pkts_all); |
| 2039 | AWDATA_RX(rx_bytes_all); |
| 2040 | |
| 2041 | AWDATA(tx_pkts_all); |
| 2042 | AWDATA(tx_bytes_all); |
| 2043 | AWDATA(queued); |
| 2044 | AWDATA(completed); |
| 2045 | AWDATA(xretries); |
| 2046 | AWDATA(a_aggr); |
| 2047 | AWDATA(a_queued_hw); |
| 2048 | AWDATA(a_queued_sw); |
| 2049 | AWDATA(a_completed); |
| 2050 | AWDATA(a_retries); |
| 2051 | AWDATA(a_xretries); |
| 2052 | AWDATA(fifo_underrun); |
| 2053 | AWDATA(xtxop); |
| 2054 | AWDATA(timer_exp); |
| 2055 | AWDATA(desc_cfg_err); |
| 2056 | AWDATA(data_underrun); |
| 2057 | AWDATA(delim_underrun); |
| 2058 | |
| 2059 | AWDATA_RX(decrypt_crc_err); |
| 2060 | AWDATA_RX(phy_err); |
| 2061 | AWDATA_RX(mic_err); |
| 2062 | AWDATA_RX(pre_delim_crc_err); |
| 2063 | AWDATA_RX(post_delim_crc_err); |
| 2064 | AWDATA_RX(decrypt_busy_err); |
| 2065 | |
| 2066 | AWDATA_RX(phy_err_stats[ATH9K_PHYERR_RADAR]); |
| 2067 | AWDATA_RX(phy_err_stats[ATH9K_PHYERR_OFDM_TIMING]); |
| 2068 | AWDATA_RX(phy_err_stats[ATH9K_PHYERR_CCK_TIMING]); |
| 2069 | |
| 2070 | WARN_ON(i != ATH9K_SSTATS_LEN); |
| 2071 | } |
| 2072 | |
| 2073 | /* End of ethtool get-stats functions */ |
| 2074 | |
| 2075 | #endif |
| 2076 | |
| 2077 | |
Gabor Juhos | 6baff7f | 2009-01-14 20:17:06 +0100 | [diff] [blame] | 2078 | struct ieee80211_ops ath9k_ops = { |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2079 | .tx = ath9k_tx, |
| 2080 | .start = ath9k_start, |
| 2081 | .stop = ath9k_stop, |
| 2082 | .add_interface = ath9k_add_interface, |
Rajkumar Manoharan | 6b3b991 | 2010-12-08 19:38:55 +0530 | [diff] [blame] | 2083 | .change_interface = ath9k_change_interface, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2084 | .remove_interface = ath9k_remove_interface, |
| 2085 | .config = ath9k_config, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2086 | .configure_filter = ath9k_configure_filter, |
Johannes Berg | 4ca7786 | 2010-02-19 19:06:56 +0100 | [diff] [blame] | 2087 | .sta_add = ath9k_sta_add, |
| 2088 | .sta_remove = ath9k_sta_remove, |
Felix Fietkau | 5519541 | 2011-04-17 23:28:09 +0200 | [diff] [blame] | 2089 | .sta_notify = ath9k_sta_notify, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2090 | .conf_tx = ath9k_conf_tx, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2091 | .bss_info_changed = ath9k_bss_info_changed, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2092 | .set_key = ath9k_set_key, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2093 | .get_tsf = ath9k_get_tsf, |
Alina Friedrichsen | 3b5d665 | 2009-01-24 07:09:59 +0100 | [diff] [blame] | 2094 | .set_tsf = ath9k_set_tsf, |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2095 | .reset_tsf = ath9k_reset_tsf, |
Johannes Berg | 4233df6 | 2008-10-13 13:35:05 +0200 | [diff] [blame] | 2096 | .ampdu_action = ath9k_ampdu_action, |
Benoit Papillault | 62dad5b | 2010-04-28 00:08:24 +0200 | [diff] [blame] | 2097 | .get_survey = ath9k_get_survey, |
Johannes Berg | 3b319aa | 2009-06-13 14:50:26 +0530 | [diff] [blame] | 2098 | .rfkill_poll = ath9k_rfkill_poll_state, |
Felix Fietkau | e239d85 | 2010-01-15 02:34:58 +0100 | [diff] [blame] | 2099 | .set_coverage_class = ath9k_set_coverage_class, |
Vasanthakumar Thiagarajan | 6908162 | 2011-02-19 01:13:42 -0800 | [diff] [blame] | 2100 | .flush = ath9k_flush, |
Vivek Natarajan | 15b91e8 | 2011-04-06 11:41:11 +0530 | [diff] [blame] | 2101 | .tx_frames_pending = ath9k_tx_frames_pending, |
Mohammed Shafi Shajakhan | 52c94f4 | 2011-08-20 17:21:42 +0530 | [diff] [blame] | 2102 | .tx_last_beacon = ath9k_tx_last_beacon, |
| 2103 | .get_stats = ath9k_get_stats, |
Felix Fietkau | 43c3528 | 2011-09-03 01:40:27 +0200 | [diff] [blame] | 2104 | .set_antenna = ath9k_set_antenna, |
| 2105 | .get_antenna = ath9k_get_antenna, |
Ben Greear | b90bd9d | 2012-05-15 15:33:25 -0700 | [diff] [blame] | 2106 | |
| 2107 | #ifdef CONFIG_ATH9K_DEBUGFS |
| 2108 | .get_et_sset_count = ath9k_get_et_sset_count, |
| 2109 | .get_et_stats = ath9k_get_et_stats, |
| 2110 | .get_et_strings = ath9k_get_et_strings, |
| 2111 | #endif |
Luis R. Rodriguez | f078f20 | 2008-08-04 00:16:41 -0700 | [diff] [blame] | 2112 | }; |