diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/main.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/main.c | 4048 |
1 files changed, 1538 insertions, 2510 deletions
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 996eb90263c..62ac95d6bb9 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2008-2009 Atheros Communications Inc. + * Copyright (c) 2008-2011 Atheros Communications Inc. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -15,165 +15,14 @@ */ #include <linux/nl80211.h> +#include <linux/delay.h> #include "ath9k.h" #include "btcoex.h" -static char *dev_info = "ath9k"; - -MODULE_AUTHOR("Atheros Communications"); -MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards."); -MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards"); -MODULE_LICENSE("Dual BSD/GPL"); - -static int modparam_nohwcrypt; -module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444); -MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption"); - -static unsigned int ath9k_debug = ATH_DBG_DEFAULT; -module_param_named(debug, ath9k_debug, uint, 0); -MODULE_PARM_DESC(debug, "Debugging mask"); - -/* We use the hw_value as an index into our private channel structure */ - -#define CHAN2G(_freq, _idx) { \ - .center_freq = (_freq), \ - .hw_value = (_idx), \ - .max_power = 20, \ -} - -#define CHAN5G(_freq, _idx) { \ - .band = IEEE80211_BAND_5GHZ, \ - .center_freq = (_freq), \ - .hw_value = (_idx), \ - .max_power = 20, \ -} - -/* Some 2 GHz radios are actually tunable on 2312-2732 - * on 5 MHz steps, we support the channels which we know - * we have calibration data for all cards though to make - * this static */ -static struct ieee80211_channel ath9k_2ghz_chantable[] = { - CHAN2G(2412, 0), /* Channel 1 */ - CHAN2G(2417, 1), /* Channel 2 */ - CHAN2G(2422, 2), /* Channel 3 */ - CHAN2G(2427, 3), /* Channel 4 */ - CHAN2G(2432, 4), /* Channel 5 */ - CHAN2G(2437, 5), /* Channel 6 */ - CHAN2G(2442, 6), /* Channel 7 */ - CHAN2G(2447, 7), /* Channel 8 */ - CHAN2G(2452, 8), /* Channel 9 */ - CHAN2G(2457, 9), /* Channel 10 */ - CHAN2G(2462, 10), /* Channel 11 */ - CHAN2G(2467, 11), /* Channel 12 */ - CHAN2G(2472, 12), /* Channel 13 */ - CHAN2G(2484, 13), /* Channel 14 */ -}; - -/* Some 5 GHz radios are actually tunable on XXXX-YYYY - * on 5 MHz steps, we support the channels which we know - * we have calibration data for all cards though to make - * this static */ -static struct ieee80211_channel ath9k_5ghz_chantable[] = { - /* _We_ call this UNII 1 */ - CHAN5G(5180, 14), /* Channel 36 */ - CHAN5G(5200, 15), /* Channel 40 */ - CHAN5G(5220, 16), /* Channel 44 */ - CHAN5G(5240, 17), /* Channel 48 */ - /* _We_ call this UNII 2 */ - CHAN5G(5260, 18), /* Channel 52 */ - CHAN5G(5280, 19), /* Channel 56 */ - CHAN5G(5300, 20), /* Channel 60 */ - CHAN5G(5320, 21), /* Channel 64 */ - /* _We_ call this "Middle band" */ - CHAN5G(5500, 22), /* Channel 100 */ - CHAN5G(5520, 23), /* Channel 104 */ - CHAN5G(5540, 24), /* Channel 108 */ - CHAN5G(5560, 25), /* Channel 112 */ - CHAN5G(5580, 26), /* Channel 116 */ - CHAN5G(5600, 27), /* Channel 120 */ - CHAN5G(5620, 28), /* Channel 124 */ - CHAN5G(5640, 29), /* Channel 128 */ - CHAN5G(5660, 30), /* Channel 132 */ - CHAN5G(5680, 31), /* Channel 136 */ - CHAN5G(5700, 32), /* Channel 140 */ - /* _We_ call this UNII 3 */ - CHAN5G(5745, 33), /* Channel 149 */ - CHAN5G(5765, 34), /* Channel 153 */ - CHAN5G(5785, 35), /* Channel 157 */ - CHAN5G(5805, 36), /* Channel 161 */ - CHAN5G(5825, 37), /* Channel 165 */ -}; - -/* Atheros hardware rate code addition for short premble */ -#define SHPCHECK(__hw_rate, __flags) \ - ((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0x04 ) : 0) - -#define RATE(_bitrate, _hw_rate, _flags) { \ - .bitrate = (_bitrate), \ - .flags = (_flags), \ - .hw_value = (_hw_rate), \ - .hw_value_short = (SHPCHECK(_hw_rate, _flags)) \ -} - -static struct ieee80211_rate ath9k_legacy_rates[] = { - RATE(10, 0x1b, 0), - RATE(20, 0x1a, IEEE80211_RATE_SHORT_PREAMBLE), - RATE(55, 0x19, IEEE80211_RATE_SHORT_PREAMBLE), - RATE(110, 0x18, IEEE80211_RATE_SHORT_PREAMBLE), - RATE(60, 0x0b, 0), - RATE(90, 0x0f, 0), - RATE(120, 0x0a, 0), - RATE(180, 0x0e, 0), - RATE(240, 0x09, 0), - RATE(360, 0x0d, 0), - RATE(480, 0x08, 0), - RATE(540, 0x0c, 0), -}; - -static void ath_cache_conf_rate(struct ath_softc *sc, - struct ieee80211_conf *conf) -{ - switch (conf->channel->band) { - case IEEE80211_BAND_2GHZ: - if (conf_is_ht20(conf)) - sc->cur_rate_mode = ATH9K_MODE_11NG_HT20; - else if (conf_is_ht40_minus(conf)) - sc->cur_rate_mode = ATH9K_MODE_11NG_HT40MINUS; - else if (conf_is_ht40_plus(conf)) - sc->cur_rate_mode = ATH9K_MODE_11NG_HT40PLUS; - else - sc->cur_rate_mode = ATH9K_MODE_11G; - break; - case IEEE80211_BAND_5GHZ: - if (conf_is_ht20(conf)) - sc->cur_rate_mode = ATH9K_MODE_11NA_HT20; - else if (conf_is_ht40_minus(conf)) - sc->cur_rate_mode = ATH9K_MODE_11NA_HT40MINUS; - else if (conf_is_ht40_plus(conf)) - sc->cur_rate_mode = ATH9K_MODE_11NA_HT40PLUS; - else - sc->cur_rate_mode = ATH9K_MODE_11A; - break; - default: - BUG_ON(1); - break; - } -} - -static void ath_update_txpow(struct ath_softc *sc) -{ - struct ath_hw *ah = sc->sc_ah; - u32 txpow; - - if (sc->curtxpow != sc->config.txpowlimit) { - ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit); - /* read back in case value is clamped */ - ath9k_hw_getcapability(ah, ATH9K_CAP_TXPOW, 1, &txpow); - sc->curtxpow = txpow; - } -} +static void ath9k_set_assoc_state(struct ath_softc *sc, + struct ieee80211_vif *vif); -static u8 parse_mpdudensity(u8 mpdudensity) +u8 ath9k_parse_mpdudensity(u8 mpdudensity) { /* * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing": @@ -208,17 +57,17 @@ static u8 parse_mpdudensity(u8 mpdudensity) } } -static struct ath9k_channel *ath_get_curchannel(struct ath_softc *sc, - struct ieee80211_hw *hw) +static bool ath9k_has_pending_frames(struct ath_softc *sc, struct ath_txq *txq) { - struct ieee80211_channel *curchan = hw->conf.channel; - struct ath9k_channel *channel; - u8 chan_idx; + bool pending = false; - chan_idx = curchan->hw_value; - channel = &sc->sc_ah->channels[chan_idx]; - ath9k_update_ichannel(sc, hw, channel); - return channel; + spin_lock_bh(&txq->axq_lock); + + if (txq->axq_depth || !list_empty(&txq->axq_acq)) + pending = true; + + spin_unlock_bh(&txq->axq_lock); + return pending; } static bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode) @@ -233,327 +82,470 @@ static bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode) return ret; } +void ath_ps_full_sleep(unsigned long data) +{ + struct ath_softc *sc = (struct ath_softc *) data; + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + bool reset; + + spin_lock(&common->cc_lock); + ath_hw_cycle_counters_update(common); + spin_unlock(&common->cc_lock); + + ath9k_hw_setrxabort(sc->sc_ah, 1); + ath9k_hw_stopdmarecv(sc->sc_ah, &reset); + + ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP); +} + void ath9k_ps_wakeup(struct ath_softc *sc) { + struct ath_common *common = ath9k_hw_common(sc->sc_ah); unsigned long flags; + enum ath9k_power_mode power_mode; spin_lock_irqsave(&sc->sc_pm_lock, flags); if (++sc->ps_usecount != 1) goto unlock; + del_timer_sync(&sc->sleep_timer); + power_mode = sc->sc_ah->power_mode; ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE); + /* + * While the hardware is asleep, the cycle counters contain no + * useful data. Better clear them now so that they don't mess up + * survey data results. + */ + if (power_mode != ATH9K_PM_AWAKE) { + spin_lock(&common->cc_lock); + ath_hw_cycle_counters_update(common); + memset(&common->cc_survey, 0, sizeof(common->cc_survey)); + memset(&common->cc_ani, 0, sizeof(common->cc_ani)); + spin_unlock(&common->cc_lock); + } + unlock: spin_unlock_irqrestore(&sc->sc_pm_lock, flags); } void ath9k_ps_restore(struct ath_softc *sc) { + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + enum ath9k_power_mode mode; unsigned long flags; spin_lock_irqsave(&sc->sc_pm_lock, flags); if (--sc->ps_usecount != 0) goto unlock; + if (sc->ps_idle) { + mod_timer(&sc->sleep_timer, jiffies + HZ / 10); + goto unlock; + } + if (sc->ps_enabled && - !(sc->sc_flags & (SC_OP_WAIT_FOR_BEACON | - SC_OP_WAIT_FOR_CAB | - SC_OP_WAIT_FOR_PSPOLL_DATA | - SC_OP_WAIT_FOR_TX_ACK))) - ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP); + !(sc->ps_flags & (PS_WAIT_FOR_BEACON | + PS_WAIT_FOR_CAB | + PS_WAIT_FOR_PSPOLL_DATA | + PS_WAIT_FOR_TX_ACK | + PS_WAIT_FOR_ANI))) { + mode = ATH9K_PM_NETWORK_SLEEP; + if (ath9k_hw_btcoex_is_enabled(sc->sc_ah)) + ath9k_btcoex_stop_gen_timer(sc); + } else { + goto unlock; + } + + spin_lock(&common->cc_lock); + ath_hw_cycle_counters_update(common); + spin_unlock(&common->cc_lock); + + ath9k_hw_setpower(sc->sc_ah, mode); unlock: spin_unlock_irqrestore(&sc->sc_pm_lock, flags); } -/* - * Set/change channels. If the channel is really being changed, it's done - * by reseting the chip. To accomplish this we must first cleanup any pending - * DMA, then restart stuff. -*/ -int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw, - struct ath9k_channel *hchan) +static void __ath_cancel_work(struct ath_softc *sc) { - struct ath_hw *ah = sc->sc_ah; - struct ath_common *common = ath9k_hw_common(ah); - struct ieee80211_conf *conf = &common->hw->conf; - bool fastcc = true, stopped; - struct ieee80211_channel *channel = hw->conf.channel; - int r; - - if (sc->sc_flags & SC_OP_INVALID) - return -EIO; - - ath9k_ps_wakeup(sc); + cancel_work_sync(&sc->paprd_work); + cancel_delayed_work_sync(&sc->tx_complete_work); + cancel_delayed_work_sync(&sc->hw_pll_work); - /* - * This is only performed if the channel settings have - * actually changed. - * - * To switch channels clear any pending DMA operations; - * wait long enough for the RX fifo to drain, reset the - * hardware at the new frequency, and then re-enable - * the relevant bits of the h/w. - */ - ath9k_hw_set_interrupts(ah, 0); - ath_drain_all_txq(sc, false); - stopped = ath_stoprecv(sc); +#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT + if (ath9k_hw_mci_is_enabled(sc->sc_ah)) + cancel_work_sync(&sc->mci_work); +#endif +} - /* XXX: do not flush receive queue here. We don't want - * to flush data frames already in queue because of - * changing channel. */ +void ath_cancel_work(struct ath_softc *sc) +{ + __ath_cancel_work(sc); + cancel_work_sync(&sc->hw_reset_work); +} - if (!stopped || (sc->sc_flags & SC_OP_FULL_RESET)) - fastcc = false; +void ath_restart_work(struct ath_softc *sc) +{ + ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0); - ath_print(common, ATH_DBG_CONFIG, - "(%u MHz) -> (%u MHz), conf_is_ht40: %d\n", - sc->sc_ah->curchan->channel, - channel->center_freq, conf_is_ht40(conf)); + if (AR_SREV_9340(sc->sc_ah) || AR_SREV_9330(sc->sc_ah)) + ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, + msecs_to_jiffies(ATH_PLL_WORK_INTERVAL)); - spin_lock_bh(&sc->sc_resetlock); + ath_start_ani(sc); +} - r = ath9k_hw_reset(ah, hchan, fastcc); - if (r) { - ath_print(common, ATH_DBG_FATAL, - "Unable to reset channel (%u Mhz) " - "reset status %d\n", - channel->center_freq, r); - spin_unlock_bh(&sc->sc_resetlock); - goto ps_restore; - } - spin_unlock_bh(&sc->sc_resetlock); +static bool ath_prepare_reset(struct ath_softc *sc) +{ + struct ath_hw *ah = sc->sc_ah; + bool ret = true; - sc->sc_flags &= ~SC_OP_FULL_RESET; + ieee80211_stop_queues(sc->hw); + ath_stop_ani(sc); + ath9k_hw_disable_interrupts(ah); - if (ath_startrecv(sc) != 0) { - ath_print(common, ATH_DBG_FATAL, - "Unable to restart recv logic\n"); - r = -EIO; - goto ps_restore; - } + if (!ath_drain_all_txq(sc)) + ret = false; - ath_cache_conf_rate(sc, &hw->conf); - ath_update_txpow(sc); - ath9k_hw_set_interrupts(ah, sc->imask); + if (!ath_stoprecv(sc)) + ret = false; - ps_restore: - ath9k_ps_restore(sc); - return r; + return ret; } -/* - * This routine performs the periodic noise floor calibration function - * that is used to adjust and optimize the chip performance. This - * takes environmental changes (location, temperature) into account. - * When the task is complete, it reschedules itself depending on the - * appropriate interval that was calculated. - */ -static void ath_ani_calibrate(unsigned long data) +static bool ath_complete_reset(struct ath_softc *sc, bool start) { - struct ath_softc *sc = (struct ath_softc *)data; struct ath_hw *ah = sc->sc_ah; struct ath_common *common = ath9k_hw_common(ah); - bool longcal = false; - bool shortcal = false; - bool aniflag = false; - unsigned int timestamp = jiffies_to_msecs(jiffies); - u32 cal_interval, short_cal_interval; + unsigned long flags; + int i; - short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ? - ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL; + if (ath_startrecv(sc) != 0) { + ath_err(common, "Unable to restart recv logic\n"); + return false; + } - /* - * don't calibrate when we're scanning. - * we are most likely not on our home channel. - */ - spin_lock(&sc->ani_lock); - if (sc->sc_flags & SC_OP_SCANNING) - goto set_timer; + ath9k_cmn_update_txpow(ah, sc->curtxpow, + sc->config.txpowlimit, &sc->curtxpow); - /* Only calibrate if awake */ - if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE) - goto set_timer; + clear_bit(ATH_OP_HW_RESET, &common->op_flags); + ath9k_hw_set_interrupts(ah); + ath9k_hw_enable_interrupts(ah); - ath9k_ps_wakeup(sc); + if (!(sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) && start) { + if (!test_bit(ATH_OP_BEACONS, &common->op_flags)) + goto work; - /* Long calibration runs independently of short calibration. */ - if ((timestamp - common->ani.longcal_timer) >= ATH_LONG_CALINTERVAL) { - longcal = true; - ath_print(common, ATH_DBG_ANI, "longcal @%lu\n", jiffies); - common->ani.longcal_timer = timestamp; - } - - /* Short calibration applies only while caldone is false */ - if (!common->ani.caldone) { - if ((timestamp - common->ani.shortcal_timer) >= short_cal_interval) { - shortcal = true; - ath_print(common, ATH_DBG_ANI, - "shortcal @%lu\n", jiffies); - common->ani.shortcal_timer = timestamp; - common->ani.resetcal_timer = timestamp; + if (ah->opmode == NL80211_IFTYPE_STATION && + test_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags)) { + spin_lock_irqsave(&sc->sc_pm_lock, flags); + sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON; + spin_unlock_irqrestore(&sc->sc_pm_lock, flags); + } else { + ath9k_set_beacon(sc); } - } else { - if ((timestamp - common->ani.resetcal_timer) >= - ATH_RESTART_CALINTERVAL) { - common->ani.caldone = ath9k_hw_reset_calvalid(ah); - if (common->ani.caldone) - common->ani.resetcal_timer = timestamp; + work: + ath_restart_work(sc); + + for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) { + if (!ATH_TXQ_SETUP(sc, i)) + continue; + + spin_lock_bh(&sc->tx.txq[i].axq_lock); + ath_txq_schedule(sc, &sc->tx.txq[i]); + spin_unlock_bh(&sc->tx.txq[i].axq_lock); } } - /* Verify whether we must check ANI */ - if ((timestamp - common->ani.checkani_timer) >= ATH_ANI_POLLINTERVAL) { - aniflag = true; - common->ani.checkani_timer = timestamp; - } + sc->gtt_cnt = 0; + ieee80211_wake_queues(sc->hw); - /* Skip all processing if there's nothing to do. */ - if (longcal || shortcal || aniflag) { - /* Call ANI routine if necessary */ - if (aniflag) - ath9k_hw_ani_monitor(ah, ah->curchan); + ath9k_p2p_ps_timer(sc); - /* Perform calibration if necessary */ - if (longcal || shortcal) { - common->ani.caldone = - ath9k_hw_calibrate(ah, - ah->curchan, - common->rx_chainmask, - longcal); + return true; +} - if (longcal) - common->ani.noise_floor = ath9k_hw_getchan_noise(ah, - ah->curchan); +static int ath_reset_internal(struct ath_softc *sc, struct ath9k_channel *hchan) +{ + struct ath_hw *ah = sc->sc_ah; + struct ath_common *common = ath9k_hw_common(ah); + struct ath9k_hw_cal_data *caldata = NULL; + bool fastcc = true; + int r; - ath_print(common, ATH_DBG_ANI, - " calibrate chan %u/%x nf: %d\n", - ah->curchan->channel, - ah->curchan->channelFlags, - common->ani.noise_floor); - } + __ath_cancel_work(sc); + + tasklet_disable(&sc->intr_tq); + spin_lock_bh(&sc->sc_pcu_lock); + + if (!(sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)) { + fastcc = false; + caldata = &sc->caldata; } - ath9k_ps_restore(sc); + if (!hchan) { + fastcc = false; + hchan = ah->curchan; + } -set_timer: - spin_unlock(&sc->ani_lock); - /* - * Set timer interval based on previous results. - * The interval must be the shortest necessary to satisfy ANI, - * short calibration and long calibration. - */ - cal_interval = ATH_LONG_CALINTERVAL; - if (sc->sc_ah->config.enable_ani) - cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL); - if (!common->ani.caldone) - cal_interval = min(cal_interval, (u32)short_cal_interval); + if (!ath_prepare_reset(sc)) + fastcc = false; - mod_timer(&common->ani.timer, jiffies + msecs_to_jiffies(cal_interval)); -} + ath_dbg(common, CONFIG, "Reset to %u MHz, HT40: %d fastcc: %d\n", + hchan->channel, IS_CHAN_HT40(hchan), fastcc); -static void ath_start_ani(struct ath_common *common) -{ - unsigned long timestamp = jiffies_to_msecs(jiffies); + r = ath9k_hw_reset(ah, hchan, caldata, fastcc); + if (r) { + ath_err(common, + "Unable to reset channel, reset status %d\n", r); + + ath9k_hw_enable_interrupts(ah); + ath9k_queue_reset(sc, RESET_TYPE_BB_HANG); + + goto out; + } + + if (ath9k_hw_mci_is_enabled(sc->sc_ah) && + (sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)) + ath9k_mci_set_txpower(sc, true, false); + + if (!ath_complete_reset(sc, true)) + r = -EIO; - common->ani.longcal_timer = timestamp; - common->ani.shortcal_timer = timestamp; - common->ani.checkani_timer = timestamp; +out: + spin_unlock_bh(&sc->sc_pcu_lock); + tasklet_enable(&sc->intr_tq); - mod_timer(&common->ani.timer, - jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL)); + return r; } + /* - * Update tx/rx chainmask. For legacy association, - * hard code chainmask to 1x1, for 11n association, use - * the chainmask configuration, for bt coexistence, use - * the chainmask configuration even in legacy mode. - */ -void ath_update_chainmask(struct ath_softc *sc, int is_ht) + * Set/change channels. If the channel is really being changed, it's done + * by reseting the chip. To accomplish this we must first cleanup any pending + * DMA, then restart stuff. +*/ +static int ath_set_channel(struct ath_softc *sc, struct cfg80211_chan_def *chandef) { struct ath_hw *ah = sc->sc_ah; struct ath_common *common = ath9k_hw_common(ah); + struct ieee80211_hw *hw = sc->hw; + struct ath9k_channel *hchan; + struct ieee80211_channel *chan = chandef->chan; + bool offchannel; + int pos = chan->hw_value; + int old_pos = -1; + int r; + + if (test_bit(ATH_OP_INVALID, &common->op_flags)) + return -EIO; + + offchannel = !!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL); + + if (ah->curchan) + old_pos = ah->curchan - &ah->channels[0]; + + ath_dbg(common, CONFIG, "Set channel: %d MHz width: %d\n", + chan->center_freq, chandef->width); + + /* update survey stats for the old channel before switching */ + spin_lock_bh(&common->cc_lock); + ath_update_survey_stats(sc); + spin_unlock_bh(&common->cc_lock); + + ath9k_cmn_get_channel(hw, ah, chandef); + + /* + * If the operating channel changes, change the survey in-use flags + * along with it. + * Reset the survey data for the new channel, unless we're switching + * back to the operating channel from an off-channel operation. + */ + if (!offchannel && sc->cur_survey != &sc->survey[pos]) { + if (sc->cur_survey) + sc->cur_survey->filled &= ~SURVEY_INFO_IN_USE; - if ((sc->sc_flags & SC_OP_SCANNING) || is_ht || - (ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE)) { - common->tx_chainmask = ah->caps.tx_chainmask; - common->rx_chainmask = ah->caps.rx_chainmask; + sc->cur_survey = &sc->survey[pos]; + + memset(sc->cur_survey, 0, sizeof(struct survey_info)); + sc->cur_survey->filled |= SURVEY_INFO_IN_USE; + } else if (!(sc->survey[pos].filled & SURVEY_INFO_IN_USE)) { + memset(&sc->survey[pos], 0, sizeof(struct survey_info)); + } + + hchan = &sc->sc_ah->channels[pos]; + r = ath_reset_internal(sc, hchan); + if (r) + return r; + + /* + * The most recent snapshot of channel->noisefloor for the old + * channel is only available after the hardware reset. Copy it to + * the survey stats now. + */ + if (old_pos >= 0) + ath_update_survey_nf(sc, old_pos); + + /* + * Enable radar pulse detection if on a DFS channel. Spectral + * scanning and radar detection can not be used concurrently. + */ + if (hw->conf.radar_enabled) { + u32 rxfilter; + + /* set HW specific DFS configuration */ + ath9k_hw_set_radar_params(ah); + rxfilter = ath9k_hw_getrxfilter(ah); + rxfilter |= ATH9K_RX_FILTER_PHYRADAR | + ATH9K_RX_FILTER_PHYERR; + ath9k_hw_setrxfilter(ah, rxfilter); + ath_dbg(common, DFS, "DFS enabled at freq %d\n", + chan->center_freq); } else { - common->tx_chainmask = 1; - common->rx_chainmask = 1; + /* perform spectral scan if requested. */ + if (test_bit(ATH_OP_SCANNING, &common->op_flags) && + sc->spectral_mode == SPECTRAL_CHANSCAN) + ath9k_spectral_scan_trigger(hw); } - ath_print(common, ATH_DBG_CONFIG, - "tx chmask: %d, rx chmask: %d\n", - common->tx_chainmask, - common->rx_chainmask); + return 0; } -static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta) +static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta, + struct ieee80211_vif *vif) { struct ath_node *an; - an = (struct ath_node *)sta->drv_priv; - if (sc->sc_flags & SC_OP_TXAGGR) { - ath_tx_node_init(sc, an); - an->maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR + - sta->ht_cap.ampdu_factor); - an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density); - an->last_rssi = ATH_RSSI_DUMMY_MARKER; - } + an->sc = sc; + an->sta = sta; + an->vif = vif; + memset(&an->key_idx, 0, sizeof(an->key_idx)); + + ath_tx_node_init(sc, an); } static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta) { struct ath_node *an = (struct ath_node *)sta->drv_priv; - - if (sc->sc_flags & SC_OP_TXAGGR) - ath_tx_node_cleanup(sc, an); + ath_tx_node_cleanup(sc, an); } -static void ath9k_tasklet(unsigned long data) +void ath9k_tasklet(unsigned long data) { struct ath_softc *sc = (struct ath_softc *)data; struct ath_hw *ah = sc->sc_ah; struct ath_common *common = ath9k_hw_common(ah); - + enum ath_reset_type type; + unsigned long flags; u32 status = sc->intrstatus; + u32 rxmask; ath9k_ps_wakeup(sc); + spin_lock(&sc->sc_pcu_lock); if (status & ATH9K_INT_FATAL) { - ath_reset(sc, false); - ath9k_ps_restore(sc); - return; + type = RESET_TYPE_FATAL_INT; + ath9k_queue_reset(sc, type); + + /* + * Increment the ref. counter here so that + * interrupts are enabled in the reset routine. + */ + atomic_inc(&ah->intr_ref_cnt); + ath_dbg(common, RESET, "FATAL: Skipping interrupts\n"); + goto out; } - if (status & (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN)) { - spin_lock_bh(&sc->rx.rxflushlock); - ath_rx_tasklet(sc, 0); - spin_unlock_bh(&sc->rx.rxflushlock); + if ((ah->config.hw_hang_checks & HW_BB_WATCHDOG) && + (status & ATH9K_INT_BB_WATCHDOG)) { + spin_lock(&common->cc_lock); + ath_hw_cycle_counters_update(common); + ar9003_hw_bb_watchdog_dbg_info(ah); + spin_unlock(&common->cc_lock); + + if (ar9003_hw_bb_watchdog_check(ah)) { + type = RESET_TYPE_BB_WATCHDOG; + ath9k_queue_reset(sc, type); + + /* + * Increment the ref. counter here so that + * interrupts are enabled in the reset routine. + */ + atomic_inc(&ah->intr_ref_cnt); + ath_dbg(common, RESET, + "BB_WATCHDOG: Skipping interrupts\n"); + goto out; + } } - if (status & ATH9K_INT_TX) - ath_tx_tasklet(sc); + if (status & ATH9K_INT_GTT) { + sc->gtt_cnt++; + if ((sc->gtt_cnt >= MAX_GTT_CNT) && !ath9k_hw_check_alive(ah)) { + type = RESET_TYPE_TX_GTT; + ath9k_queue_reset(sc, type); + atomic_inc(&ah->intr_ref_cnt); + ath_dbg(common, RESET, + "GTT: Skipping interrupts\n"); + goto out; + } + } + + spin_lock_irqsave(&sc->sc_pm_lock, flags); if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) { /* * TSF sync does not look correct; remain awake to sync with * the next Beacon. */ - ath_print(common, ATH_DBG_PS, - "TSFOOR - Sync with next Beacon\n"); - sc->sc_flags |= SC_OP_WAIT_FOR_BEACON | SC_OP_BEACON_SYNC; + ath_dbg(common, PS, "TSFOOR - Sync with next Beacon\n"); + sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC; } + spin_unlock_irqrestore(&sc->sc_pm_lock, flags); + + if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) + rxmask = (ATH9K_INT_RXHP | ATH9K_INT_RXLP | ATH9K_INT_RXEOL | + ATH9K_INT_RXORN); + else + rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN); - if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) - if (status & ATH9K_INT_GENTIMER) - ath_gen_timer_isr(sc->sc_ah); + if (status & rxmask) { + /* Check for high priority Rx first */ + if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) && + (status & ATH9K_INT_RXHP)) + ath_rx_tasklet(sc, 0, true); + + ath_rx_tasklet(sc, 0, false); + } + + if (status & ATH9K_INT_TX) { + if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) { + /* + * For EDMA chips, TX completion is enabled for the + * beacon queue, so if a beacon has been transmitted + * successfully after a GTT interrupt, the GTT counter + * gets reset to zero here. + */ + sc->gtt_cnt = 0; + + ath_tx_edma_tasklet(sc); + } else { + ath_tx_tasklet(sc); + } + + wake_up(&sc->tx_wait); + } + + if (status & ATH9K_INT_GENTIMER) + ath_gen_timer_isr(sc->sc_ah); + + ath9k_btcoex_handle_interrupt(sc, status); /* re-enable hardware interrupt */ - ath9k_hw_set_interrupts(ah, sc->imask); + ath9k_hw_enable_interrupts(ah); +out: + spin_unlock(&sc->sc_pcu_lock); ath9k_ps_restore(sc); } @@ -561,18 +553,25 @@ irqreturn_t ath_isr(int irq, void *dev) { #define SCHED_INTR ( \ ATH9K_INT_FATAL | \ + ATH9K_INT_BB_WATCHDOG | \ ATH9K_INT_RXORN | \ ATH9K_INT_RXEOL | \ ATH9K_INT_RX | \ + ATH9K_INT_RXLP | \ + ATH9K_INT_RXHP | \ ATH9K_INT_TX | \ ATH9K_INT_BMISS | \ ATH9K_INT_CST | \ + ATH9K_INT_GTT | \ ATH9K_INT_TSFOOR | \ - ATH9K_INT_GENTIMER) + ATH9K_INT_GENTIMER | \ + ATH9K_INT_MCI) struct ath_softc *sc = dev; struct ath_hw *ah = sc->sc_ah; + struct ath_common *common = ath9k_hw_common(ah); enum ath9k_int status; + u32 sync_cause = 0; bool sched = false; /* @@ -580,23 +579,28 @@ irqreturn_t ath_isr(int irq, void *dev) * touch anything. Note this can happen early * on if the IRQ is shared. */ - if (sc->sc_flags & SC_OP_INVALID) + if (test_bit(ATH_OP_INVALID, &common->op_flags)) return IRQ_NONE; - /* shared irq, not for us */ if (!ath9k_hw_intrpend(ah)) return IRQ_NONE; + if (test_bit(ATH_OP_HW_RESET, &common->op_flags)) { + ath9k_hw_kill_interrupts(ah); + return IRQ_HANDLED; + } + /* * Figure out the reason(s) for the interrupt. Note * that the hal returns a pseudo-ISR that may include * bits we haven't explicitly enabled so we mask the * value to insure we only process bits we requested. */ - ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */ - status &= sc->imask; /* discard unasked-for bits */ + ath9k_hw_getisr(ah, &status, &sync_cause); /* NB: clears ISR too */ + ath9k_debug_sync_cause(sc, sync_cause); + status &= ah->imask; /* discard unasked-for bits */ /* * If there are no status bits set, then this interrupt was not @@ -615,38 +619,45 @@ irqreturn_t ath_isr(int irq, void *dev) * If a FATAL or RXORN interrupt is received, we have to reset the * chip immediately. */ - if (status & (ATH9K_INT_FATAL | ATH9K_INT_RXORN)) + if ((status & ATH9K_INT_FATAL) || ((status & ATH9K_INT_RXORN) && + !(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA))) goto chip_reset; + if ((ah->config.hw_hang_checks & HW_BB_WATCHDOG) && + (status & ATH9K_INT_BB_WATCHDOG)) + goto chip_reset; + +#ifdef CONFIG_ATH9K_WOW + if (status & ATH9K_INT_BMISS) { + if (atomic_read(&sc->wow_sleep_proc_intr) == 0) { + atomic_inc(&sc->wow_got_bmiss_intr); + atomic_dec(&sc->wow_sleep_proc_intr); + } + } +#endif + if (status & ATH9K_INT_SWBA) tasklet_schedule(&sc->bcon_tasklet); if (status & ATH9K_INT_TXURN) ath9k_hw_updatetxtriglevel(ah, true); - if (status & ATH9K_INT_MIB) { - /* - * Disable interrupts until we service the MIB - * interrupt; otherwise it will continue to - * fire. - */ - ath9k_hw_set_interrupts(ah, 0); - /* - * Let the hal handle the event. We assume - * it will clear whatever condition caused - * the interrupt. - */ - ath9k_hw_procmibevent(ah); - ath9k_hw_set_interrupts(ah, sc->imask); + if (status & ATH9K_INT_RXEOL) { + ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN); + ath9k_hw_set_interrupts(ah); } if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) if (status & ATH9K_INT_TIM_TIMER) { + if (ATH_DBG_WARN_ON_ONCE(sc->ps_idle)) + goto chip_reset; /* Clear RxAbort bit so that we can * receive frames */ ath9k_setpower(sc, ATH9K_PM_AWAKE); + spin_lock(&sc->sc_pm_lock); ath9k_hw_setrxabort(sc->sc_ah, 0); - sc->sc_flags |= SC_OP_WAIT_FOR_BEACON; + sc->ps_flags |= PS_WAIT_FOR_BEACON; + spin_unlock(&sc->sc_pm_lock); } chip_reset: @@ -654,8 +665,8 @@ chip_reset: ath_debug_stat_interrupt(sc, status); if (sched) { - /* turn off every interrupt except SWBA */ - ath9k_hw_set_interrupts(ah, (sc->imask & ATH9K_INT_SWBA)); + /* turn off every interrupt */ + ath9k_hw_disable_interrupts(ah); tasklet_schedule(&sc->intr_tq); } @@ -664,2058 +675,693 @@ chip_reset: #undef SCHED_INTR } -static u32 ath_get_extchanmode(struct ath_softc *sc, - struct ieee80211_channel *chan, - enum nl80211_channel_type channel_type) +int ath_reset(struct ath_softc *sc) { - u32 chanmode = 0; + int r; - switch (chan->band) { - case IEEE80211_BAND_2GHZ: - switch(channel_type) { - case NL80211_CHAN_NO_HT: - case NL80211_CHAN_HT20: - chanmode = CHANNEL_G_HT20; - break; - case NL80211_CHAN_HT40PLUS: - chanmode = CHANNEL_G_HT40PLUS; - break; - case NL80211_CHAN_HT40MINUS: - chanmode = CHANNEL_G_HT40MINUS; - break; - } - break; - case IEEE80211_BAND_5GHZ: - switch(channel_type) { - case NL80211_CHAN_NO_HT: - case NL80211_CHAN_HT20: - chanmode = CHANNEL_A_HT20; - break; - case NL80211_CHAN_HT40PLUS: - chanmode = CHANNEL_A_HT40PLUS; - break; - case NL80211_CHAN_HT40MINUS: - chanmode = CHANNEL_A_HT40MINUS; - break; - } - break; - default: - break; - } + ath9k_ps_wakeup(sc); + r = ath_reset_internal(sc, NULL); + ath9k_ps_restore(sc); - return chanmode; + return r; } -static int ath_setkey_tkip(struct ath_common *common, u16 keyix, const u8 *key, - struct ath9k_keyval *hk, const u8 *addr, - bool authenticator) +void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type) { - struct ath_hw *ah = common->ah; - const u8 *key_rxmic; - const u8 *key_txmic; - - key_txmic = key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY; - key_rxmic = key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY; - - if (addr == NULL) { - /* - * Group key installation - only two key cache entries are used - * regardless of splitmic capability since group key is only - * used either for TX or RX. - */ - if (authenticator) { - memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic)); - memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_mic)); - } else { - memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic)); - memcpy(hk->kv_txmic, key_rxmic, sizeof(hk->kv_mic)); - } - return ath9k_hw_set_keycache_entry(ah, keyix, hk, addr); - } - if (!common->splitmic) { - /* TX and RX keys share the same key cache entry. */ - memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic)); - memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic)); - return ath9k_hw_set_keycache_entry(ah, keyix, hk, addr); - } - - /* Separate key cache entries for TX and RX */ - - /* TX key goes at first index, RX key at +32. */ - memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic)); - if (!ath9k_hw_set_keycache_entry(ah, keyix, hk, NULL)) { - /* TX MIC entry failed. No need to proceed further */ - ath_print(common, ATH_DBG_FATAL, - "Setting TX MIC Key Failed\n"); - return 0; - } - - memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic)); - /* XXX delete tx key on failure? */ - return ath9k_hw_set_keycache_entry(ah, keyix + 32, hk, addr); + struct ath_common *common = ath9k_hw_common(sc->sc_ah); +#ifdef CONFIG_ATH9K_DEBUGFS + RESET_STAT_INC(sc, type); +#endif + set_bit(ATH_OP_HW_RESET, &common->op_flags); + ieee80211_queue_work(sc->hw, &sc->hw_reset_work); } -static int ath_reserve_key_cache_slot_tkip(struct ath_common *common) +void ath_reset_work(struct work_struct *work) { - int i; + struct ath_softc *sc = container_of(work, struct ath_softc, hw_reset_work); - for (i = IEEE80211_WEP_NKID; i < common->keymax / 2; i++) { - if (test_bit(i, common->keymap) || - test_bit(i + 64, common->keymap)) - continue; /* At least one part of TKIP key allocated */ - if (common->splitmic && - (test_bit(i + 32, common->keymap) || - test_bit(i + 64 + 32, common->keymap))) - continue; /* At least one part of TKIP key allocated */ - - /* Found a free slot for a TKIP key */ - return i; - } - return -1; + ath_reset(sc); } -static int ath_reserve_key_cache_slot(struct ath_common *common) +/**********************/ +/* mac80211 callbacks */ +/**********************/ + +static int ath9k_start(struct ieee80211_hw *hw) { - int i; + struct ath_softc *sc = hw->priv; + struct ath_hw *ah = sc->sc_ah; + struct ath_common *common = ath9k_hw_common(ah); + struct ieee80211_channel *curchan = hw->conf.chandef.chan; + struct ath9k_channel *init_channel; + int r; - /* First, try to find slots that would not be available for TKIP. */ - if (common->splitmic) { - for (i = IEEE80211_WEP_NKID; i < common->keymax / 4; i++) { - if (!test_bit(i, common->keymap) && - (test_bit(i + 32, common->keymap) || - test_bit(i + 64, common->keymap) || - test_bit(i + 64 + 32, common->keymap))) - return i; - if (!test_bit(i + 32, common->keymap) && - (test_bit(i, common->keymap) || - test_bit(i + 64, common->keymap) || - test_bit(i + 64 + 32, common->keymap))) - return i + 32; - if (!test_bit(i + 64, common->keymap) && - (test_bit(i , common->keymap) || - test_bit(i + 32, common->keymap) || - test_bit(i + 64 + 32, common->keymap))) - return i + 64; - if (!test_bit(i + 64 + 32, common->keymap) && - (test_bit(i, common->keymap) || - test_bit(i + 32, common->keymap) || - test_bit(i + 64, common->keymap))) - return i + 64 + 32; - } - } else { - for (i = IEEE80211_WEP_NKID; i < common->keymax / 2; i++) { - if (!test_bit(i, common->keymap) && - test_bit(i + 64, common->keymap)) - return i; - if (test_bit(i, common->keymap) && - !test_bit(i + 64, common->keymap)) - return i + 64; - } - } + ath_dbg(common, CONFIG, + "Starting driver with initial channel: %d MHz\n", + curchan->center_freq); - /* No partially used TKIP slots, pick any available slot */ - for (i = IEEE80211_WEP_NKID; i < common->keymax; i++) { - /* Do not allow slots that could be needed for TKIP group keys - * to be used. This limitation could be removed if we know that - * TKIP will not be used. */ - if (i >= 64 && i < 64 + IEEE80211_WEP_NKID) - continue; - if (common->splitmic) { - if (i >= 32 && i < 32 + IEEE80211_WEP_NKID) - continue; - if (i >= 64 + 32 && i < 64 + 32 + IEEE80211_WEP_NKID) - continue; - } + ath9k_ps_wakeup(sc); + mutex_lock(&sc->mutex); - if (!test_bit(i, common->keymap)) - return i; /* Found a free slot for a key */ - } + init_channel = ath9k_cmn_get_channel(hw, ah, &hw->conf.chandef); - /* No free slot found */ - return -1; -} + /* Reset SERDES registers */ + ath9k_hw_configpcipowersave(ah, false); -static int ath_key_config(struct ath_common *common, - struct ieee80211_vif *vif, - struct ieee80211_sta *sta, - struct ieee80211_key_conf *key) -{ - struct ath_hw *ah = common->ah; - struct ath9k_keyval hk; - const u8 *mac = NULL; - int ret = 0; - int idx; + /* + * The basic interface to setting the hardware in a good + * state is ``reset''. On return the hardware is known to + * be powered up and with interrupts disabled. This must + * be followed by initialization of the appropriate bits + * and then setup of the interrupt mask. + */ + spin_lock_bh(&sc->sc_pcu_lock); - memset(&hk, 0, sizeof(hk)); + atomic_set(&ah->intr_ref_cnt, -1); - switch (key->alg) { - case ALG_WEP: - hk.kv_type = ATH9K_CIPHER_WEP; - break; - case ALG_TKIP: - hk.kv_type = ATH9K_CIPHER_TKIP; - break; - case ALG_CCMP: - hk.kv_type = ATH9K_CIPHER_AES_CCM; - break; - default: - return -EOPNOTSUPP; + r = ath9k_hw_reset(ah, init_channel, ah->caldata, false); + if (r) { + ath_err(common, + "Unable to reset hardware; reset status %d (freq %u MHz)\n", + r, curchan->center_freq); + ah->reset_power_on = false; } - hk.kv_len = key->keylen; - memcpy(hk.kv_val, key->key, key->keylen); - - if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { - /* For now, use the default keys for broadcast keys. This may - * need to change with virtual interfaces. */ - idx = key->keyidx; - } else if (key->keyidx) { - if (WARN_ON(!sta)) - return -EOPNOTSUPP; - mac = sta->addr; - - if (vif->type != NL80211_IFTYPE_AP) { - /* Only keyidx 0 should be used with unicast key, but - * allow this for client mode for now. */ - idx = key->keyidx; - } else - return -EIO; - } else { - if (WARN_ON(!sta)) - return -EOPNOTSUPP; - mac = sta->addr; - - if (key->alg == ALG_TKIP) - idx = ath_reserve_key_cache_slot_tkip(common); - else - idx = ath_reserve_key_cache_slot(common); - if (idx < 0) - return -ENOSPC; /* no free key cache entries */ - } + /* Setup our intr mask. */ + ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL | + ATH9K_INT_RXORN | ATH9K_INT_FATAL | + ATH9K_INT_GLOBAL; - if (key->alg == ALG_TKIP) - ret = ath_setkey_tkip(common, idx, key->key, &hk, mac, - vif->type == NL80211_IFTYPE_AP); + if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) + ah->imask |= ATH9K_INT_RXHP | + ATH9K_INT_RXLP; else - ret = ath9k_hw_set_keycache_entry(ah, idx, &hk, mac); + ah->imask |= ATH9K_INT_RX; - if (!ret) - return -EIO; + if (ah->config.hw_hang_checks & HW_BB_WATCHDOG) + ah->imask |= ATH9K_INT_BB_WATCHDOG; - set_bit(idx, common->keymap); - if (key->alg == ALG_TKIP) { - set_bit(idx + 64, common->keymap); - if (common->splitmic) { - set_bit(idx + 32, common->keymap); - set_bit(idx + 64 + 32, common->keymap); - } - } + /* + * Enable GTT interrupts only for AR9003/AR9004 chips + * for now. + */ + if (AR_SREV_9300_20_OR_LATER(ah)) + ah->imask |= ATH9K_INT_GTT; - return idx; -} + if (ah->caps.hw_caps & ATH9K_HW_CAP_HT) + ah->imask |= ATH9K_INT_CST; -static void ath_key_delete(struct ath_common *common, struct ieee80211_key_conf *key) -{ - struct ath_hw *ah = common->ah; + ath_mci_enable(sc); - ath9k_hw_keyreset(ah, key->hw_key_idx); - if (key->hw_key_idx < IEEE80211_WEP_NKID) - return; + clear_bit(ATH_OP_INVALID, &common->op_flags); + sc->sc_ah->is_monitoring = false; - clear_bit(key->hw_key_idx, common->keymap); - if (key->alg != ALG_TKIP) - return; + if (!ath_complete_reset(sc, false)) + ah->reset_power_on = false; - clear_bit(key->hw_key_idx + 64, common->keymap); - if (common->splitmic) { - clear_bit(key->hw_key_idx + 32, common->keymap); - clear_bit(key->hw_key_idx + 64 + 32, common->keymap); + if (ah->led_pin >= 0) { + ath9k_hw_cfg_output(ah, ah->led_pin, + AR_GPIO_OUTPUT_MUX_AS_OUTPUT); + ath9k_hw_set_gpio(ah, ah->led_pin, 0); } -} -static void setup_ht_cap(struct ath_softc *sc, - struct ieee80211_sta_ht_cap *ht_info) -{ - struct ath_common *common = ath9k_hw_common(sc->sc_ah); - u8 tx_streams, rx_streams; - - ht_info->ht_supported = true; - ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | - IEEE80211_HT_CAP_SM_PS | - IEEE80211_HT_CAP_SGI_40 | - IEEE80211_HT_CAP_DSSSCCK40; + /* + * Reset key cache to sane defaults (all entries cleared) instead of + * semi-random values after suspend/resume. + */ + ath9k_cmn_init_crypto(sc->sc_ah); - ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; - ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8; + ath9k_hw_reset_tsf(ah); - /* set up supported mcs set */ - memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); - tx_streams = !(common->tx_chainmask & (common->tx_chainmask - 1)) ? - 1 : 2; - rx_streams = !(common->rx_chainmask & (common->rx_chainmask - 1)) ? - 1 : 2; + spin_unlock_bh(&sc->sc_pcu_lock); - if (tx_streams != rx_streams) { - ath_print(common, ATH_DBG_CONFIG, - "TX streams %d, RX streams: %d\n", - tx_streams, rx_streams); - ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; - ht_info->mcs.tx_params |= ((tx_streams - 1) << - IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); - } + mutex_unlock(&sc->mutex); - ht_info->mcs.rx_mask[0] = 0xff; - if (rx_streams >= 2) - ht_info->mcs.rx_mask[1] = 0xff; + ath9k_ps_restore(sc); - ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED; + return 0; } -static void ath9k_bss_assoc_info(struct ath_softc *sc, - struct ieee80211_vif *vif, - struct ieee80211_bss_conf *bss_conf) +static void ath9k_tx(struct ieee80211_hw *hw, + struct ieee80211_tx_control *control, + struct sk_buff *skb) { - struct ath_hw *ah = sc->sc_ah; - struct ath_common *common = ath9k_hw_common(ah); - - if (bss_conf->assoc) { - ath_print(common, ATH_DBG_CONFIG, - "Bss Info ASSOC %d, bssid: %pM\n", - bss_conf->aid, common->curbssid); - - /* New association, store aid */ - common->curaid = bss_conf->aid; - ath9k_hw_write_associd(ah); + struct ath_softc *sc = hw->priv; + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + struct ath_tx_control txctl; + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; + unsigned long flags; + if (sc->ps_enabled) { /* - * Request a re-configuration of Beacon related timers - * on the receipt of the first Beacon frame (i.e., - * after time sync with the AP). + * mac80211 does not set PM field for normal data frames, so we + * need to update that based on the current PS mode. */ - sc->sc_flags |= SC_OP_BEACON_SYNC; - - /* Configure the beacon */ - ath_beacon_config(sc, vif); - - /* Reset rssi stats */ - sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER; - - ath_start_ani(common); - } else { - ath_print(common, ATH_DBG_CONFIG, "Bss Info DISASSOC\n"); - common->curaid = 0; - /* Stop ANI */ - del_timer_sync(&common->ani.timer); + if (ieee80211_is_data(hdr->frame_control) && + !ieee80211_is_nullfunc(hdr->frame_control) && + !ieee80211_has_pm(hdr->frame_control)) { + ath_dbg(common, PS, + "Add PM=1 for a TX frame while in PS mode\n"); + hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); + } } -} - -/********************************/ -/* LED functions */ -/********************************/ - -static void ath_led_blink_work(struct work_struct *work) -{ - struct ath_softc *sc = container_of(work, struct ath_softc, - ath_led_blink_work.work); - if (!(sc->sc_flags & SC_OP_LED_ASSOCIATED)) - return; - - if ((sc->led_on_duration == ATH_LED_ON_DURATION_IDLE) || - (sc->led_off_duration == ATH_LED_OFF_DURATION_IDLE)) - ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 0); - else - ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, - (sc->sc_flags & SC_OP_LED_ON) ? 1 : 0); - - ieee80211_queue_delayed_work(sc->hw, - &sc->ath_led_blink_work, - (sc->sc_flags & SC_OP_LED_ON) ? - msecs_to_jiffies(sc->led_off_duration) : - msecs_to_jiffies(sc->led_on_duration)); - - sc->led_on_duration = sc->led_on_cnt ? - max((ATH_LED_ON_DURATION_IDLE - sc->led_on_cnt), 25) : - ATH_LED_ON_DURATION_IDLE; - sc->led_off_duration = sc->led_off_cnt ? - max((ATH_LED_OFF_DURATION_IDLE - sc->led_off_cnt), 10) : - ATH_LED_OFF_DURATION_IDLE; - sc->led_on_cnt = sc->led_off_cnt = 0; - if (sc->sc_flags & SC_OP_LED_ON) - sc->sc_flags &= ~SC_OP_LED_ON; - else - sc->sc_flags |= SC_OP_LED_ON; -} - -static void ath_led_brightness(struct led_classdev *led_cdev, - enum led_brightness brightness) -{ - struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev); - struct ath_softc *sc = led->sc; - - switch (brightness) { - case LED_OFF: - if (led->led_type == ATH_LED_ASSOC || - led->led_type == ATH_LED_RADIO) { - ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, - (led->led_type == ATH_LED_RADIO)); - sc->sc_flags &= ~SC_OP_LED_ASSOCIATED; - if (led->led_type == ATH_LED_RADIO) - sc->sc_flags &= ~SC_OP_LED_ON; - } else { - sc->led_off_cnt++; - } - break; - case LED_FULL: - if (led->led_type == ATH_LED_ASSOC) { - sc->sc_flags |= SC_OP_LED_ASSOCIATED; - ieee80211_queue_delayed_work(sc->hw, - &sc->ath_led_blink_work, 0); - } else if (led->led_type == ATH_LED_RADIO) { - ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 0); - sc->sc_flags |= SC_OP_LED_ON; + if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP)) { + /* + * We are using PS-Poll and mac80211 can request TX while in + * power save mode. Need to wake up hardware for the TX to be + * completed and if needed, also for RX of buffered frames. + */ + ath9k_ps_wakeup(sc); + spin_lock_irqsave(&sc->sc_pm_lock, flags); + if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) + ath9k_hw_setrxabort(sc->sc_ah, 0); + if (ieee80211_is_pspoll(hdr->frame_control)) { + ath_dbg(common, PS, + "Sending PS-Poll to pick a buffered frame\n"); + sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA; } else { - sc->led_on_cnt++; + ath_dbg(common, PS, "Wake up to complete TX\n"); + sc->ps_flags |= PS_WAIT_FOR_TX_ACK; } - break; - default: - break; + /* + * The actual restore operation will happen only after + * the ps_flags bit is cleared. We are just dropping + * the ps_usecount here. + */ + spin_unlock_irqrestore(&sc->sc_pm_lock, flags); + ath9k_ps_restore(sc); } -} - -static int ath_register_led(struct ath_softc *sc, struct ath_led *led, - char *trigger) -{ - int ret; - - led->sc = sc; - led->led_cdev.name = led->name; - led->led_cdev.default_trigger = trigger; - led->led_cdev.brightness_set = ath_led_brightness; - - ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev); - if (ret) - ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL, - "Failed to register led:%s", led->name); - else - led->registered = 1; - return ret; -} -static void ath_unregister_led(struct ath_led *led) -{ - if (led->registered) { - led_classdev_unregister(&led->led_cdev); - led->registered = 0; + /* + * Cannot tx while the hardware is in full sleep, it first needs a full + * chip reset to recover from that + */ + if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_FULL_SLEEP)) { + ath_err(common, "TX while HW is in FULL_SLEEP mode\n"); + goto exit; } -} - -static void ath_deinit_leds(struct ath_softc *sc) -{ - ath_unregister_led(&sc->assoc_led); - sc->sc_flags &= ~SC_OP_LED_ASSOCIATED; - ath_unregister_led(&sc->tx_led); - ath_unregister_led(&sc->rx_led); - ath_unregister_led(&sc->radio_led); - ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1); -} -static void ath_init_leds(struct ath_softc *sc) -{ - char *trigger; - int ret; - - if (AR_SREV_9287(sc->sc_ah)) - sc->sc_ah->led_pin = ATH_LED_PIN_9287; - else - sc->sc_ah->led_pin = ATH_LED_PIN_DEF; - - /* Configure gpio 1 for output */ - ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin, - AR_GPIO_OUTPUT_MUX_AS_OUTPUT); - /* LED off, active low */ - ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1); - - INIT_DELAYED_WORK(&sc->ath_led_blink_work, ath_led_blink_work); + memset(&txctl, 0, sizeof(struct ath_tx_control)); + txctl.txq = sc->tx.txq_map[skb_get_queue_mapping(skb)]; + txctl.sta = control->sta; - trigger = ieee80211_get_radio_led_name(sc->hw); - snprintf(sc->radio_led.name, sizeof(sc->radio_led.name), - "ath9k-%s::radio", wiphy_name(sc->hw->wiphy)); - ret = ath_register_led(sc, &sc->radio_led, trigger); - sc->radio_led.led_type = ATH_LED_RADIO; - if (ret) - goto fail; + ath_dbg(common, XMIT, "transmitting packet, skb: %p\n", skb); - trigger = ieee80211_get_assoc_led_name(sc->hw); - snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name), - "ath9k-%s::assoc", wiphy_name(sc->hw->wiphy)); - ret = ath_register_led(sc, &sc->assoc_led, trigger); - sc->assoc_led.led_type = ATH_LED_ASSOC; - if (ret) - goto fail; - - trigger = ieee80211_get_tx_led_name(sc->hw); - snprintf(sc->tx_led.name, sizeof(sc->tx_led.name), - "ath9k-%s::tx", wiphy_name(sc->hw->wiphy)); - ret = ath_register_led(sc, &sc->tx_led, trigger); - sc->tx_led.led_type = ATH_LED_TX; - if (ret) - goto fail; - - trigger = ieee80211_get_rx_led_name(sc->hw); - snprintf(sc->rx_led.name, sizeof(sc->rx_led.name), - "ath9k-%s::rx", wiphy_name(sc->hw->wiphy)); - ret = ath_register_led(sc, &sc->rx_led, trigger); - sc->rx_led.led_type = ATH_LED_RX; - if (ret) - goto fail; + if (ath_tx_start(hw, skb, &txctl) != 0) { + ath_dbg(common, XMIT, "TX failed\n"); + TX_STAT_INC(txctl.txq->axq_qnum, txfailed); + goto exit; + } return; - -fail: - cancel_delayed_work_sync(&sc->ath_led_blink_work); - ath_deinit_leds(sc); +exit: + ieee80211_free_txskb(hw, skb); } -void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw) +static void ath9k_stop(struct ieee80211_hw *hw) { + struct ath_softc *sc = hw->priv; struct ath_hw *ah = sc->sc_ah; struct ath_common *common = ath9k_hw_common(ah); - struct ieee80211_channel *channel = hw->conf.channel; - int r; + bool prev_idle; - ath9k_ps_wakeup(sc); - ath9k_hw_configpcipowersave(ah, 0, 0); - - if (!ah->curchan) - ah->curchan = ath_get_curchannel(sc, sc->hw); + mutex_lock(&sc->mutex); - spin_lock_bh(&sc->sc_resetlock); - r = ath9k_hw_reset(ah, ah->curchan, false); - if (r) { - ath_print(common, ATH_DBG_FATAL, - "Unable to reset channel %u (%uMhz) ", - "reset status %d\n", - channel->center_freq, r); - } - spin_unlock_bh(&sc->sc_resetlock); + ath_cancel_work(sc); - ath_update_txpow(sc); - if (ath_startrecv(sc) != 0) { - ath_print(common, ATH_DBG_FATAL, - "Unable to restart recv logic\n"); + if (test_bit(ATH_OP_INVALID, &common->op_flags)) { + ath_dbg(common, ANY, "Device not present\n"); + mutex_unlock(&sc->mutex); return; } - if (sc->sc_flags & SC_OP_BEACONS) - ath_beacon_config(sc, NULL); /* restart beacons */ - - /* Re-Enable interrupts */ - ath9k_hw_set_interrupts(ah, sc->imask); - - /* Enable LED */ - ath9k_hw_cfg_output(ah, ah->led_pin, - AR_GPIO_OUTPUT_MUX_AS_OUTPUT); - ath9k_hw_set_gpio(ah, ah->led_pin, 0); - - ieee80211_wake_queues(hw); - ath9k_ps_restore(sc); -} - -void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw) -{ - struct ath_hw *ah = sc->sc_ah; - struct ieee80211_channel *channel = hw->conf.channel; - int r; - + /* Ensure HW is awake when we try to shut it down. */ ath9k_ps_wakeup(sc); - ieee80211_stop_queues(hw); - - /* Disable LED */ - ath9k_hw_set_gpio(ah, ah->led_pin, 1); - ath9k_hw_cfg_gpio_input(ah, ah->led_pin); - - /* Disable interrupts */ - ath9k_hw_set_interrupts(ah, 0); - - ath_drain_all_txq(sc, false); /* clear pending tx frames */ - ath_stoprecv(sc); /* turn off frame recv */ - ath_flushrecv(sc); /* flush recv queue */ - - if (!ah->curchan) - ah->curchan = ath_get_curchannel(sc, hw); - - spin_lock_bh(&sc->sc_resetlock); - r = ath9k_hw_reset(ah, ah->curchan, false); - if (r) { - ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL, - "Unable to reset channel %u (%uMhz) " - "reset status %d\n", - channel->center_freq, r); - } - spin_unlock_bh(&sc->sc_resetlock); - - ath9k_hw_phy_disable(ah); - ath9k_hw_configpcipowersave(ah, 1, 1); - ath9k_ps_restore(sc); - ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP); -} - -/*******************/ -/* Rfkill */ -/*******************/ - -static bool ath_is_rfkill_set(struct ath_softc *sc) -{ - struct ath_hw *ah = sc->sc_ah; - - return ath9k_hw_gpio_get(ah, ah->rfkill_gpio) == - ah->rfkill_polarity; -} - -static void ath9k_rfkill_poll_state(struct ieee80211_hw *hw) -{ - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; - bool blocked = !!ath_is_rfkill_set(sc); - wiphy_rfkill_set_hw_state(hw->wiphy, blocked); -} + spin_lock_bh(&sc->sc_pcu_lock); -static void ath_start_rfkill_poll(struct ath_softc *sc) -{ - struct ath_hw *ah = sc->sc_ah; - - if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) - wiphy_rfkill_start_polling(sc->hw->wiphy); -} + /* prevent tasklets to enable interrupts once we disable them */ + ah->imask &= ~ATH9K_INT_GLOBAL; -static void ath9k_uninit_hw(struct ath_softc *sc) -{ - struct ath_hw *ah = sc->sc_ah; + /* make sure h/w will not generate any interrupt + * before setting the invalid flag. */ + ath9k_hw_disable_interrupts(ah); - BUG_ON(!ah); + spin_unlock_bh(&sc->sc_pcu_lock); - ath9k_exit_debug(ah); - ath9k_hw_detach(ah); - sc->sc_ah = NULL; -} + /* we can now sync irq and kill any running tasklets, since we already + * disabled interrupts and not holding a spin lock */ + synchronize_irq(sc->irq); + tasklet_kill(&sc->intr_tq); + tasklet_kill(&sc->bcon_tasklet); -static void ath_clean_core(struct ath_softc *sc) -{ - struct ieee80211_hw *hw = sc->hw; - struct ath_hw *ah = sc->sc_ah; - int i = 0; + prev_idle = sc->ps_idle; + sc->ps_idle = true; - ath9k_ps_wakeup(sc); + spin_lock_bh(&sc->sc_pcu_lock); - dev_dbg(sc->dev, "Detach ATH hw\n"); + if (ah->led_pin >= 0) { + ath9k_hw_set_gpio(ah, ah->led_pin, 1); + ath9k_hw_cfg_gpio_input(ah, ah->led_pin); + } - ath_deinit_leds(sc); - wiphy_rfkill_stop_polling(sc->hw->wiphy); + ath_prepare_reset(sc); - for (i = 0; i < sc->num_sec_wiphy; i++) { - struct ath_wiphy *aphy = sc->sec_wiphy[i]; - if (aphy == NULL) - continue; - sc->sec_wiphy[i] = NULL; - ieee80211_unregister_hw(aphy->hw); - ieee80211_free_hw(aphy->hw); + if (sc->rx.frag) { + dev_kfree_skb_any(sc->rx.frag); + sc->rx.frag = NULL; } - ieee80211_unregister_hw(hw); - ath_rx_cleanup(sc); - ath_tx_cleanup(sc); - tasklet_kill(&sc->intr_tq); - tasklet_kill(&sc->bcon_tasklet); + if (!ah->curchan) + ah->curchan = ath9k_cmn_get_channel(hw, ah, &hw->conf.chandef); - if (!(sc->sc_flags & SC_OP_INVALID)) - ath9k_setpower(sc, ATH9K_PM_AWAKE); + ath9k_hw_reset(ah, ah->curchan, ah->caldata, false); + ath9k_hw_phy_disable(ah); - /* cleanup tx queues */ - for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) - if (ATH_TXQ_SETUP(sc, i)) - ath_tx_cleanupq(sc, &sc->tx.txq[i]); + ath9k_hw_configpcipowersave(ah, true); - if ((sc->btcoex.no_stomp_timer) && - ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) - ath_gen_timer_free(ah, sc->btcoex.no_stomp_timer); -} + spin_unlock_bh(&sc->sc_pcu_lock); -void ath_detach(struct ath_softc *sc) -{ - ath_clean_core(sc); - ath9k_uninit_hw(sc); -} + ath9k_ps_restore(sc); -void ath_cleanup(struct ath_softc *sc) -{ - struct ath_hw *ah = sc->sc_ah; - struct ath_common *common = ath9k_hw_common(ah); + set_bit(ATH_OP_INVALID, &common->op_flags); + sc->ps_idle = prev_idle; - ath_clean_core(sc); - free_irq(sc->irq, sc); - ath_bus_cleanup(common); - kfree(sc->sec_wiphy); - ieee80211_free_hw(sc->hw); + mutex_unlock(&sc->mutex); - ath9k_uninit_hw(sc); + ath_dbg(common, CONFIG, "Driver halt\n"); } -static int ath9k_reg_notifier(struct wiphy *wiphy, - struct regulatory_request *request) +static bool ath9k_uses_beacons(int type) { - struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; - struct ath_regulatory *reg = ath9k_hw_regulatory(sc->sc_ah); - - return ath_reg_notifier_apply(wiphy, request, reg); + switch (type) { + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_MESH_POINT: + return true; + default: + return false; + } } -/* - * Detects if there is any priority bt traffic - */ -static void ath_detect_bt_priority(struct ath_softc *sc) +static void ath9k_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif) { - struct ath_btcoex *btcoex = &sc->btcoex; - struct ath_hw *ah = sc->sc_ah; - - if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio)) - btcoex->bt_priority_cnt++; - - if (time_after(jiffies, btcoex->bt_priority_time + - msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) { - if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) { - ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX, - "BT priority traffic detected"); - sc->sc_flags |= SC_OP_BT_PRIORITY_DETECTED; - } else { - sc->sc_flags &= ~SC_OP_BT_PRIORITY_DETECTED; - } + struct ath9k_vif_iter_data *iter_data = data; + int i; - btcoex->bt_priority_cnt = 0; - btcoex->bt_priority_time = jiffies; + if (iter_data->has_hw_macaddr) { + for (i = 0; i < ETH_ALEN; i++) + iter_data->mask[i] &= + ~(iter_data->hw_macaddr[i] ^ mac[i]); + } else { + memcpy(iter_data->hw_macaddr, mac, ETH_ALEN); + iter_data->has_hw_macaddr = true; } -} - -/* - * Configures appropriate weight based on stomp type. - */ -static void ath9k_btcoex_bt_stomp(struct ath_softc *sc, - enum ath_stomp_type stomp_type) -{ - struct ath_hw *ah = sc->sc_ah; - switch (stomp_type) { - case ATH_BTCOEX_STOMP_ALL: - ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, - AR_STOMP_ALL_WLAN_WGHT); + switch (vif->type) { + case NL80211_IFTYPE_AP: + iter_data->naps++; + break; + case NL80211_IFTYPE_STATION: + iter_data->nstations++; break; - case ATH_BTCOEX_STOMP_LOW: - ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, - AR_STOMP_LOW_WLAN_WGHT); + case NL80211_IFTYPE_ADHOC: + iter_data->nadhocs++; + break; + case NL80211_IFTYPE_MESH_POINT: + iter_data->nmeshes++; break; - case ATH_BTCOEX_STOMP_NONE: - ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, - AR_STOMP_NONE_WLAN_WGHT); + case NL80211_IFTYPE_WDS: + iter_data->nwds++; break; default: - ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX, - "Invalid Stomptype\n"); break; } - - ath9k_hw_btcoex_enable(ah); } -static void ath9k_gen_timer_start(struct ath_hw *ah, - struct ath_gen_timer *timer, - u32 timer_next, - u32 timer_period) +static void ath9k_sta_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif) { - struct ath_common *common = ath9k_hw_common(ah); - struct ath_softc *sc = (struct ath_softc *) common->priv; + struct ath_softc *sc = data; + struct ath_vif *avp = (void *)vif->drv_priv; - ath9k_hw_gen_timer_start(ah, timer, timer_next, timer_period); + if (vif->type != NL80211_IFTYPE_STATION) + return; - if ((sc->imask & ATH9K_INT_GENTIMER) == 0) { - ath9k_hw_set_interrupts(ah, 0); - sc->imask |= ATH9K_INT_GENTIMER; - ath9k_hw_set_interrupts(ah, sc->imask); - } + if (avp->primary_sta_vif) + ath9k_set_assoc_state(sc, vif); } -static void ath9k_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer) +/* Called with sc->mutex held. */ +void ath9k_calculate_iter_data(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ath9k_vif_iter_data *iter_data) { - struct ath_common *common = ath9k_hw_common(ah); - struct ath_softc *sc = (struct ath_softc *) common->priv; - struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers; - - ath9k_hw_gen_timer_stop(ah, timer); - - /* if no timer is enabled, turn off interrupt mask */ - if (timer_table->timer_mask.val == 0) { - ath9k_hw_set_interrupts(ah, 0); - sc->imask &= ~ATH9K_INT_GENTIMER; - ath9k_hw_set_interrupts(ah, sc->imask); - } -} - -/* - * This is the master bt coex timer which runs for every - * 45ms, bt traffic will be given priority during 55% of this - * period while wlan gets remaining 45% - */ -static void ath_btcoex_period_timer(unsigned long data) -{ - struct ath_softc *sc = (struct ath_softc *) data; + struct ath_softc *sc = hw->priv; struct ath_hw *ah = sc->sc_ah; - struct ath_btcoex *btcoex = &sc->btcoex; - - ath_detect_bt_priority(sc); - - spin_lock_bh(&btcoex->btcoex_lock); - - ath9k_btcoex_bt_stomp(sc, btcoex->bt_stomp_type); + struct ath_common *common = ath9k_hw_common(ah); - spin_unlock_bh(&btcoex->btcoex_lock); + /* + * Pick the MAC address of the first interface as the new hardware + * MAC address. The hardware will use it together with the BSSID mask + * when matching addresses. + */ + memset(iter_data, 0, sizeof(*iter_data)); + memset(&iter_data->mask, 0xff, ETH_ALEN); - if (btcoex->btcoex_period != btcoex->btcoex_no_stomp) { - if (btcoex->hw_timer_enabled) - ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer); + if (vif) + ath9k_vif_iter(iter_data, vif->addr, vif); - ath9k_gen_timer_start(ah, - btcoex->no_stomp_timer, - (ath9k_hw_gettsf32(ah) + - btcoex->btcoex_no_stomp), - btcoex->btcoex_no_stomp * 10); - btcoex->hw_timer_enabled = true; - } + /* Get list of all active MAC addresses */ + ieee80211_iterate_active_interfaces_atomic( + sc->hw, IEEE80211_IFACE_ITER_RESUME_ALL, + ath9k_vif_iter, iter_data); - mod_timer(&btcoex->period_timer, jiffies + - msecs_to_jiffies(ATH_BTCOEX_DEF_BT_PERIOD)); + memcpy(common->macaddr, iter_data->hw_macaddr, ETH_ALEN); } -/* - * Generic tsf based hw timer which configures weight - * registers to time slice between wlan and bt traffic - */ -static void ath_btcoex_no_stomp_timer(void *arg) +/* Called with sc->mutex held. */ +static void ath9k_calculate_summary_state(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) { - struct ath_softc *sc = (struct ath_softc *)arg; + struct ath_softc *sc = hw->priv; struct ath_hw *ah = sc->sc_ah; - struct ath_btcoex *btcoex = &sc->btcoex; - - ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX, - "no stomp timer running \n"); - - spin_lock_bh(&btcoex->btcoex_lock); - - if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW) - ath9k_btcoex_bt_stomp(sc, ATH_BTCOEX_STOMP_NONE); - else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL) - ath9k_btcoex_bt_stomp(sc, ATH_BTCOEX_STOMP_LOW); - - spin_unlock_bh(&btcoex->btcoex_lock); -} - -static int ath_init_btcoex_timer(struct ath_softc *sc) -{ - struct ath_btcoex *btcoex = &sc->btcoex; - - btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD * 1000; - btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) * - btcoex->btcoex_period / 100; - - setup_timer(&btcoex->period_timer, ath_btcoex_period_timer, - (unsigned long) sc); - - spin_lock_init(&btcoex->btcoex_lock); - - btcoex->no_stomp_timer = ath_gen_timer_alloc(sc->sc_ah, - ath_btcoex_no_stomp_timer, - ath_btcoex_no_stomp_timer, - (void *) sc, AR_FIRST_NDP_TIMER); - - if (!btcoex->no_stomp_timer) - return -ENOMEM; - - return 0; -} - -/* - * Read and write, they both share the same lock. We do this to serialize - * reads and writes on Atheros 802.11n PCI devices only. This is required - * as the FIFO on these devices can only accept sanely 2 requests. After - * that the device goes bananas. Serializing the reads/writes prevents this - * from happening. - */ - -static void ath9k_iowrite32(void *hw_priv, u32 val, u32 reg_offset) -{ - struct ath_hw *ah = (struct ath_hw *) hw_priv; struct ath_common *common = ath9k_hw_common(ah); - struct ath_softc *sc = (struct ath_softc *) common->priv; - - if (ah->config.serialize_regmode == SER_REG_MODE_ON) { - unsigned long flags; - spin_lock_irqsave(&sc->sc_serial_rw, flags); - iowrite32(val, sc->mem + reg_offset); - spin_unlock_irqrestore(&sc->sc_serial_rw, flags); - } else - iowrite32(val, sc->mem + reg_offset); -} + struct ath9k_vif_iter_data iter_data; + enum nl80211_iftype old_opmode = ah->opmode; -static unsigned int ath9k_ioread32(void *hw_priv, u32 reg_offset) -{ - struct ath_hw *ah = (struct ath_hw *) hw_priv; - struct ath_common *common = ath9k_hw_common(ah); - struct ath_softc *sc = (struct ath_softc *) common->priv; - u32 val; + ath9k_calculate_iter_data(hw, vif, &iter_data); - if (ah->config.serialize_regmode == SER_REG_MODE_ON) { - unsigned long flags; - spin_lock_irqsave(&sc->sc_serial_rw, flags); - val = ioread32(sc->mem + reg_offset); - spin_unlock_irqrestore(&sc->sc_serial_rw, flags); - } else - val = ioread32(sc->mem + reg_offset); - return val; -} + memcpy(common->bssidmask, iter_data.mask, ETH_ALEN); + ath_hw_setbssidmask(common); -static const struct ath_ops ath9k_common_ops = { - .read = ath9k_ioread32, - .write = ath9k_iowrite32, -}; - -/* - * Initialize and fill ath_softc, ath_sofct is the - * "Software Carrier" struct. Historically it has existed - * to allow the separation between hardware specific - * variables (now in ath_hw) and driver specific variables. - */ -static int ath_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid, - const struct ath_bus_ops *bus_ops) -{ - struct ath_hw *ah = NULL; - struct ath_common *common; - int r = 0, i; - int csz = 0; - int qnum; - - /* XXX: hardware will not be ready until ath_open() being called */ - sc->sc_flags |= SC_OP_INVALID; - - spin_lock_init(&sc->wiphy_lock); - spin_lock_init(&sc->sc_resetlock); - spin_lock_init(&sc->sc_serial_rw); - spin_lock_init(&sc->ani_lock); - spin_lock_init(&sc->sc_pm_lock); - mutex_init(&sc->mutex); - tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc); - tasklet_init(&sc->bcon_tasklet, ath_beacon_tasklet, - (unsigned long)sc); - - ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL); - if (!ah) - return -ENOMEM; - - ah->hw_version.devid = devid; - ah->hw_version.subsysid = subsysid; - sc->sc_ah = ah; - - common = ath9k_hw_common(ah); - common->ops = &ath9k_common_ops; - common->bus_ops = bus_ops; - common->ah = ah; - common->hw = sc->hw; - common->priv = sc; - common->debug_mask = ath9k_debug; - - /* - * Cache line size is used to size and align various - * structures used to communicate with the hardware. - */ - ath_read_cachesize(common, &csz); - /* XXX assert csz is non-zero */ - common->cachelsz = csz << 2; /* convert to bytes */ - - r = ath9k_hw_init(ah); - if (r) { - ath_print(common, ATH_DBG_FATAL, - "Unable to initialize hardware; " - "initialization status: %d\n", r); - goto bad_free_hw; - } - - if (ath9k_init_debug(ah) < 0) { - ath_print(common, ATH_DBG_FATAL, - "Unable to create debugfs files\n"); - goto bad_free_hw; - } - - /* Get the hardware key cache size. */ - common->keymax = ah->caps.keycache_size; - if (common->keymax > ATH_KEYMAX) { - ath_print(common, ATH_DBG_ANY, - "Warning, using only %u entries in %u key cache\n", - ATH_KEYMAX, common->keymax); - common->keymax = ATH_KEYMAX; - } - - /* - * Reset the key cache since some parts do not - * reset the contents on initial power up. - */ - for (i = 0; i < common->keymax; i++) - ath9k_hw_keyreset(ah, (u16) i); - - /* default to MONITOR mode */ - sc->sc_ah->opmode = NL80211_IFTYPE_MONITOR; - - /* - * Allocate hardware transmit queues: one queue for - * beacon frames and one data queue for each QoS - * priority. Note that the hal handles reseting - * these queues at the needed time. - */ - sc->beacon.beaconq = ath9k_hw_beaconq_setup(ah); - if (sc->beacon.beaconq == -1) { - ath_print(common, ATH_DBG_FATAL, - "Unable to setup a beacon xmit queue\n"); - r = -EIO; - goto bad2; - } - sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0); - if (sc->beacon.cabq == NULL) { - ath_print(common, ATH_DBG_FATAL, - "Unable to setup CAB xmit queue\n"); - r = -EIO; - goto bad2; - } - - sc->config.cabqReadytime = ATH_CABQ_READY_TIME; - ath_cabq_update(sc); - - for (i = 0; i < ARRAY_SIZE(sc->tx.hwq_map); i++) - sc->tx.hwq_map[i] = -1; - - /* Setup data queues */ - /* NB: ensure BK queue is the lowest priority h/w queue */ - if (!ath_tx_setup(sc, ATH9K_WME_AC_BK)) { - ath_print(common, ATH_DBG_FATAL, - "Unable to setup xmit queue for BK traffic\n"); - r = -EIO; - goto bad2; + if (iter_data.naps > 0) { + ath9k_hw_set_tsfadjust(ah, true); + ah->opmode = NL80211_IFTYPE_AP; + } else { + ath9k_hw_set_tsfadjust(ah, false); + + if (iter_data.nmeshes) + ah->opmode = NL80211_IFTYPE_MESH_POINT; + else if (iter_data.nwds) + ah->opmode = NL80211_IFTYPE_AP; + else if (iter_data.nadhocs) + ah->opmode = NL80211_IFTYPE_ADHOC; + else + ah->opmode = NL80211_IFTYPE_STATION; } - if (!ath_tx_setup(sc, ATH9K_WME_AC_BE)) { - ath_print(common, ATH_DBG_FATAL, - "Unable to setup xmit queue for BE traffic\n"); - r = -EIO; - goto bad2; - } - if (!ath_tx_setup(sc, ATH9K_WME_AC_VI)) { - ath_print(common, ATH_DBG_FATAL, - "Unable to setup xmit queue for VI traffic\n"); - r = -EIO; - goto bad2; - } - if (!ath_tx_setup(sc, ATH9K_WME_AC_VO)) { - ath_print(common, ATH_DBG_FATAL, - "Unable to setup xmit queue for VO traffic\n"); - r = -EIO; - goto bad2; - } + ath9k_hw_setopmode(ah); - /* Initializes the noise floor to a reasonable default value. - * Later on this will be updated during ANI processing. */ + if ((iter_data.nstations + iter_data.nadhocs + iter_data.nmeshes) > 0) + ah->imask |= ATH9K_INT_TSFOOR; + else + ah->imask &= ~ATH9K_INT_TSFOOR; - common->ani.noise_floor = ATH_DEFAULT_NOISE_FLOOR; - setup_timer(&common->ani.timer, ath_ani_calibrate, (unsigned long)sc); - - if (ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER, - ATH9K_CIPHER_TKIP, NULL)) { - /* - * Whether we should enable h/w TKIP MIC. - * XXX: if we don't support WME TKIP MIC, then we wouldn't - * report WMM capable, so it's always safe to turn on - * TKIP MIC in this case. - */ - ath9k_hw_setcapability(sc->sc_ah, ATH9K_CAP_TKIP_MIC, - 0, 1, NULL); - } + ath9k_hw_set_interrupts(ah); /* - * Check whether the separate key cache entries - * are required to handle both tx+rx MIC keys. - * With split mic keys the number of stations is limited - * to 27 otherwise 59. + * If we are changing the opmode to STATION, + * a beacon sync needs to be done. */ - if (ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER, - ATH9K_CIPHER_TKIP, NULL) - && ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER, - ATH9K_CIPHER_MIC, NULL) - && ath9k_hw_getcapability(ah, ATH9K_CAP_TKIP_SPLIT, - 0, NULL)) - common->splitmic = 1; - - /* turn on mcast key search if possible */ - if (!ath9k_hw_getcapability(ah, ATH9K_CAP_MCAST_KEYSRCH, 0, NULL)) - (void)ath9k_hw_setcapability(ah, ATH9K_CAP_MCAST_KEYSRCH, 1, - 1, NULL); - - sc->config.txpowlimit = ATH_TXPOWER_MAX; - - /* 11n Capabilities */ - if (ah->caps.hw_caps & ATH9K_HW_CAP_HT) { - sc->sc_flags |= SC_OP_TXAGGR; - sc->sc_flags |= SC_OP_RXAGGR; - } - - common->tx_chainmask = ah->caps.tx_chainmask; - common->rx_chainmask = ah->caps.rx_chainmask; - - ath9k_hw_setcapability(ah, ATH9K_CAP_DIVERSITY, 1, true, NULL); - sc->rx.defant = ath9k_hw_getdefantenna(ah); - - if (ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK) - memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN); - - sc->beacon.slottime = ATH9K_SLOT_TIME_9; /* default to short slot time */ - - /* initialize beacon slots */ - for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) { - sc->beacon.bslot[i] = NULL; - sc->beacon.bslot_aphy[i] = NULL; - } - - /* setup channels and rates */ - - if (test_bit(ATH9K_MODE_11G, sc->sc_ah->caps.wireless_modes)) { - sc->sbands[IEEE80211_BAND_2GHZ].channels = ath9k_2ghz_chantable; - sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ; - sc->sbands[IEEE80211_BAND_2GHZ].n_channels = - ARRAY_SIZE(ath9k_2ghz_chantable); - sc->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates; - sc->sbands[IEEE80211_BAND_2GHZ].n_bitrates = - ARRAY_SIZE(ath9k_legacy_rates); - } - - if (test_bit(ATH9K_MODE_11A, sc->sc_ah->caps.wireless_modes)) { - sc->sbands[IEEE80211_BAND_5GHZ].channels = ath9k_5ghz_chantable; - sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ; - sc->sbands[IEEE80211_BAND_5GHZ].n_channels = - ARRAY_SIZE(ath9k_5ghz_chantable); - sc->sbands[IEEE80211_BAND_5GHZ].bitrates = - ath9k_legacy_rates + 4; - sc->sbands[IEEE80211_BAND_5GHZ].n_bitrates = - ARRAY_SIZE(ath9k_legacy_rates) - 4; - } - - switch (ah->btcoex_hw.scheme) { - case ATH_BTCOEX_CFG_NONE: - break; - case ATH_BTCOEX_CFG_2WIRE: - ath9k_hw_btcoex_init_2wire(ah); - break; - case ATH_BTCOEX_CFG_3WIRE: - ath9k_hw_btcoex_init_3wire(ah); - r = ath_init_btcoex_timer(sc); - if (r) - goto bad2; - qnum = ath_tx_get_qnum(sc, ATH9K_TX_QUEUE_DATA, ATH9K_WME_AC_BE); - ath9k_hw_init_btcoex_hw(ah, qnum); - sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW; - break; - default: - WARN_ON(1); - break; - } - - return 0; -bad2: - /* cleanup tx queues */ - for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) - if (ATH_TXQ_SETUP(sc, i)) - ath_tx_cleanupq(sc, &sc->tx.txq[i]); - -bad_free_hw: - ath9k_uninit_hw(sc); - return r; -} - -void ath_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) -{ - hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | - IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | - IEEE80211_HW_SIGNAL_DBM | - IEEE80211_HW_AMPDU_AGGREGATION | - IEEE80211_HW_SUPPORTS_PS | - IEEE80211_HW_PS_NULLFUNC_STACK | - IEEE80211_HW_SPECTRUM_MGMT; - - if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || modparam_nohwcrypt) - hw->flags |= IEEE80211_HW_MFP_CAPABLE; - - hw->wiphy->interface_modes = - BIT(NL80211_IFTYPE_AP) | - BIT(NL80211_IFTYPE_STATION) | - BIT(NL80211_IFTYPE_ADHOC) | - BIT(NL80211_IFTYPE_MESH_POINT); - - hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; - - hw->queues = 4; - hw->max_rates = 4; - hw->channel_change_time = 5000; - hw->max_listen_interval = 10; - /* Hardware supports 10 but we use 4 */ - hw->max_rate_tries = 4; - hw->sta_data_size = sizeof(struct ath_node); - hw->vif_data_size = sizeof(struct ath_vif); - - hw->rate_control_algorithm = "ath9k_rate_control"; - - if (test_bit(ATH9K_MODE_11G, sc->sc_ah->caps.wireless_modes)) - hw->wiphy->bands[IEEE80211_BAND_2GHZ] = - &sc->sbands[IEEE80211_BAND_2GHZ]; - if (test_bit(ATH9K_MODE_11A, sc->sc_ah->caps.wireless_modes)) - hw->wiphy->bands[IEEE80211_BAND_5GHZ] = - &sc->sbands[IEEE80211_BAND_5GHZ]; -} - -/* Device driver core initialization */ -int ath_init_device(u16 devid, struct ath_softc *sc, u16 subsysid, - const struct ath_bus_ops *bus_ops) -{ - struct ieee80211_hw *hw = sc->hw; - struct ath_common *common; - struct ath_hw *ah; - int error = 0, i; - struct ath_regulatory *reg; - - dev_dbg(sc->dev, "Attach ATH hw\n"); - - error = ath_init_softc(devid, sc, subsysid, bus_ops); - if (error != 0) - return error; - - ah = sc->sc_ah; - common = ath9k_hw_common(ah); - - /* get mac address from hardware and set in mac80211 */ - - SET_IEEE80211_PERM_ADDR(hw, common->macaddr); - - ath_set_hw_capab(sc, hw); - - error = ath_regd_init(&common->regulatory, sc->hw->wiphy, - ath9k_reg_notifier); - if (error) - return error; - - reg = &common->regulatory; - - if (ah->caps.hw_caps & ATH9K_HW_CAP_HT) { - if (test_bit(ATH9K_MODE_11G, ah->caps.wireless_modes)) - setup_ht_cap(sc, - &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap); - if (test_bit(ATH9K_MODE_11A, ah->caps.wireless_modes)) - setup_ht_cap(sc, - &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap); - } - - /* initialize tx/rx engine */ - error = ath_tx_init(sc, ATH_TXBUF); - if (error != 0) - goto error_attach; - - error = ath_rx_init(sc, ATH_RXBUF); - if (error != 0) - goto error_attach; - - INIT_WORK(&sc->chan_work, ath9k_wiphy_chan_work); - INIT_DELAYED_WORK(&sc->wiphy_work, ath9k_wiphy_work); - sc->wiphy_scheduler_int = msecs_to_jiffies(500); - - error = ieee80211_register_hw(hw); - - if (!ath_is_world_regd(reg)) { - error = regulatory_hint(hw->wiphy, reg->alpha2); - if (error) - goto error_attach; + if (ah->opmode == NL80211_IFTYPE_STATION && + old_opmode == NL80211_IFTYPE_AP && + test_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags)) { + ieee80211_iterate_active_interfaces_atomic( + sc->hw, IEEE80211_IFACE_ITER_RESUME_ALL, + ath9k_sta_vif_iter, sc); } - - /* Initialize LED control */ - ath_init_leds(sc); - - ath_start_rfkill_poll(sc); - - return 0; - -error_attach: - /* cleanup tx queues */ - for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) - if (ATH_TXQ_SETUP(sc, i)) - ath_tx_cleanupq(sc, &sc->tx.txq[i]); - - ath9k_uninit_hw(sc); - - return error; } -int ath_reset(struct ath_softc *sc, bool retry_tx) +static int ath9k_add_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) { + struct ath_softc *sc = hw->priv; struct ath_hw *ah = sc->sc_ah; struct ath_common *common = ath9k_hw_common(ah); - struct ieee80211_hw *hw = sc->hw; - int r; - - /* Stop ANI */ - del_timer_sync(&common->ani.timer); - - ath9k_hw_set_interrupts(ah, 0); - ath_drain_all_txq(sc, retry_tx); - ath_stoprecv(sc); - ath_flushrecv(sc); - - spin_lock_bh(&sc->sc_resetlock); - r = ath9k_hw_reset(ah, sc->sc_ah->curchan, false); - if (r) - ath_print(common, ATH_DBG_FATAL, - "Unable to reset hardware; reset status %d\n", r); - spin_unlock_bh(&sc->sc_resetlock); - - if (ath_startrecv(sc) != 0) - ath_print(common, ATH_DBG_FATAL, - "Unable to start recv logic\n"); - - /* - * We may be doing a reset in response to a request - * that changes the channel so update any state that - * might change as a result. - */ - ath_cache_conf_rate(sc, &hw->conf); - - ath_update_txpow(sc); - - if (sc->sc_flags & SC_OP_BEACONS) - ath_beacon_config(sc, NULL); /* restart beacons */ + struct ath_vif *avp = (void *)vif->drv_priv; + struct ath_node *an = &avp->mcast_node; - ath9k_hw_set_interrupts(ah, sc->imask); + mutex_lock(&sc->mutex); - if (retry_tx) { - int i; - for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) { - if (ATH_TXQ_SETUP(sc, i)) { - spin_lock_bh(&sc->tx.txq[i].axq_lock); - ath_txq_schedule(sc, &sc->tx.txq[i]); - spin_unlock_bh(&sc->tx.txq[i].axq_lock); - } + if (config_enabled(CONFIG_ATH9K_TX99)) { + if (sc->nvifs >= 1) { + mutex_unlock(&sc->mutex); + return -EOPNOTSUPP; } + sc->tx99_vif = vif; } - /* Start ANI */ - ath_start_ani(common); - - return r; -} + ath_dbg(common, CONFIG, "Attach a VIF of type: %d\n", vif->type); + sc->nvifs++; -/* - * This function will allocate both the DMA descriptor structure, and the - * buffers it contains. These are used to contain the descriptors used - * by the system. -*/ -int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd, - struct list_head *head, const char *name, - int nbuf, int ndesc) -{ -#define DS2PHYS(_dd, _ds) \ - ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc)) -#define ATH_DESC_4KB_BOUND_CHECK(_daddr) ((((_daddr) & 0xFFF) > 0xF7F) ? 1 : 0) -#define ATH_DESC_4KB_BOUND_NUM_SKIPPED(_len) ((_len) / 4096) - struct ath_common *common = ath9k_hw_common(sc->sc_ah); - struct ath_desc *ds; - struct ath_buf *bf; - int i, bsize, error; + ath9k_ps_wakeup(sc); + ath9k_calculate_summary_state(hw, vif); + ath9k_ps_restore(sc); - ath_print(common, ATH_DBG_CONFIG, "%s DMA: %u buffers %u desc/buf\n", - name, nbuf, ndesc); + if (ath9k_uses_beacons(vif->type)) + ath9k_beacon_assign_slot(sc, vif); - INIT_LIST_HEAD(head); - /* ath_desc must be a multiple of DWORDs */ - if ((sizeof(struct ath_desc) % 4) != 0) { - ath_print(common, ATH_DBG_FATAL, - "ath_desc not DWORD aligned\n"); - BUG_ON((sizeof(struct ath_desc) % 4) != 0); - error = -ENOMEM; - goto fail; - } + avp->vif = vif; - dd->dd_desc_len = sizeof(struct ath_desc) * nbuf * ndesc; + an->sc = sc; + an->sta = NULL; + an->vif = vif; + an->no_ps_filter = true; + ath_tx_node_init(sc, an); - /* - * Need additional DMA memory because we can't use - * descriptors that cross the 4K page boundary. Assume - * one skipped descriptor per 4K page. - */ - if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) { - u32 ndesc_skipped = - ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len); - u32 dma_len; - - while (ndesc_skipped) { - dma_len = ndesc_skipped * sizeof(struct ath_desc); - dd->dd_desc_len += dma_len; - - ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len); - }; - } - - /* allocate descriptors */ - dd->dd_desc = dma_alloc_coherent(sc->dev, dd->dd_desc_len, - &dd->dd_desc_paddr, GFP_KERNEL); - if (dd->dd_desc == NULL) { - error = -ENOMEM; - goto fail; - } - ds = dd->dd_desc; - ath_print(common, ATH_DBG_CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n", - name, ds, (u32) dd->dd_desc_len, - ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len); - - /* allocate buffers */ - bsize = sizeof(struct ath_buf) * nbuf; - bf = kzalloc(bsize, GFP_KERNEL); - if (bf == NULL) { - error = -ENOMEM; - goto fail2; - } - dd->dd_bufptr = bf; - - for (i = 0; i < nbuf; i++, bf++, ds += ndesc) { - bf->bf_desc = ds; - bf->bf_daddr = DS2PHYS(dd, ds); - - if (!(sc->sc_ah->caps.hw_caps & - ATH9K_HW_CAP_4KB_SPLITTRANS)) { - /* - * Skip descriptor addresses which can cause 4KB - * boundary crossing (addr + length) with a 32 dword - * descriptor fetch. - */ - while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) { - BUG_ON((caddr_t) bf->bf_desc >= - ((caddr_t) dd->dd_desc + - dd->dd_desc_len)); - - ds += ndesc; - bf->bf_desc = ds; - bf->bf_daddr = DS2PHYS(dd, ds); - } - } - list_add_tail(&bf->list, head); - } + mutex_unlock(&sc->mutex); return 0; -fail2: - dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc, - dd->dd_desc_paddr); -fail: - memset(dd, 0, sizeof(*dd)); - return error; -#undef ATH_DESC_4KB_BOUND_CHECK -#undef ATH_DESC_4KB_BOUND_NUM_SKIPPED -#undef DS2PHYS } -void ath_descdma_cleanup(struct ath_softc *sc, - struct ath_descdma *dd, - struct list_head *head) +static int ath9k_change_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + enum nl80211_iftype new_type, + bool p2p) { - dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc, - dd->dd_desc_paddr); - - INIT_LIST_HEAD(head); - kfree(dd->dd_bufptr); - memset(dd, 0, sizeof(*dd)); -} + struct ath_softc *sc = hw->priv; + struct ath_common *common = ath9k_hw_common(sc->sc_ah); -int ath_get_hal_qnum(u16 queue, struct ath_softc *sc) -{ - int qnum; + mutex_lock(&sc->mutex); - switch (queue) { - case 0: - qnum = sc->tx.hwq_map[ATH9K_WME_AC_VO]; - break; - case 1: - qnum = sc->tx.hwq_map[ATH9K_WME_AC_VI]; - break; - case 2: - qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE]; - break; - case 3: - qnum = sc->tx.hwq_map[ATH9K_WME_AC_BK]; - break; - default: - qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE]; - break; + if (config_enabled(CONFIG_ATH9K_TX99)) { + mutex_unlock(&sc->mutex); + return -EOPNOTSUPP; } - return qnum; -} - -int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc) -{ - int qnum; - - switch (queue) { - case ATH9K_WME_AC_VO: - qnum = 0; - break; - case ATH9K_WME_AC_VI: - qnum = 1; - break; - case ATH9K_WME_AC_BE: - qnum = 2; - break; - case ATH9K_WME_AC_BK: - qnum = 3; - break; - default: - qnum = -1; - break; - } + ath_dbg(common, CONFIG, "Change Interface\n"); - return qnum; -} + if (ath9k_uses_beacons(vif->type)) + ath9k_beacon_remove_slot(sc, vif); -/* XXX: Remove me once we don't depend on ath9k_channel for all - * this redundant data */ -void ath9k_update_ichannel(struct ath_softc *sc, struct ieee80211_hw *hw, - struct ath9k_channel *ichan) -{ - struct ieee80211_channel *chan = hw->conf.channel; - struct ieee80211_conf *conf = &hw->conf; + vif->type = new_type; + vif->p2p = p2p; - ichan->channel = chan->center_freq; - ichan->chan = chan; + ath9k_ps_wakeup(sc); + ath9k_calculate_summary_state(hw, vif); + ath9k_ps_restore(sc); - if (chan->band == IEEE80211_BAND_2GHZ) { - ichan->chanmode = CHANNEL_G; - ichan->channelFlags = CHANNEL_2GHZ | CHANNEL_OFDM | CHANNEL_G; - } else { - ichan->chanmode = CHANNEL_A; - ichan->channelFlags = CHANNEL_5GHZ | CHANNEL_OFDM; - } + if (ath9k_uses_beacons(vif->type)) + ath9k_beacon_assign_slot(sc, vif); - if (conf_is_ht(conf)) - ichan->chanmode = ath_get_extchanmode(sc, chan, - conf->channel_type); + mutex_unlock(&sc->mutex); + return 0; } -/**********************/ -/* mac80211 callbacks */ -/**********************/ - -/* - * (Re)start btcoex timers - */ -static void ath9k_btcoex_timer_resume(struct ath_softc *sc) +static void +ath9k_update_p2p_ps_timer(struct ath_softc *sc, struct ath_vif *avp) { - struct ath_btcoex *btcoex = &sc->btcoex; struct ath_hw *ah = sc->sc_ah; + s32 tsf, target_tsf; - ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX, - "Starting btcoex timers"); + if (!avp || !avp->noa.has_next_tsf) + return; - /* make sure duty cycle timer is also stopped when resuming */ - if (btcoex->hw_timer_enabled) - ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer); + ath9k_hw_gen_timer_stop(ah, sc->p2p_ps_timer); - btcoex->bt_priority_cnt = 0; - btcoex->bt_priority_time = jiffies; - sc->sc_flags &= ~SC_OP_BT_PRIORITY_DETECTED; + tsf = ath9k_hw_gettsf32(sc->sc_ah); - mod_timer(&btcoex->period_timer, jiffies); + target_tsf = avp->noa.next_tsf; + if (!avp->noa.absent) + target_tsf -= ATH_P2P_PS_STOP_TIME; + + if (target_tsf - tsf < ATH_P2P_PS_STOP_TIME) + target_tsf = tsf + ATH_P2P_PS_STOP_TIME; + + ath9k_hw_gen_timer_start(ah, sc->p2p_ps_timer, (u32) target_tsf, 1000000); } -static int ath9k_start(struct ieee80211_hw *hw) +static void ath9k_remove_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) { - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; - struct ath_hw *ah = sc->sc_ah; - struct ath_common *common = ath9k_hw_common(ah); - struct ieee80211_channel *curchan = hw->conf.channel; - struct ath9k_channel *init_channel; - int r; + struct ath_softc *sc = hw->priv; + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + struct ath_vif *avp = (void *)vif->drv_priv; - ath_print(common, ATH_DBG_CONFIG, - "Starting driver with initial channel: %d MHz\n", - curchan->center_freq); + ath_dbg(common, CONFIG, "Detach Interface\n"); mutex_lock(&sc->mutex); - if (ath9k_wiphy_started(sc)) { - if (sc->chan_idx == curchan->hw_value) { - /* - * Already on the operational channel, the new wiphy - * can be marked active. - */ - aphy->state = ATH_WIPHY_ACTIVE; - ieee80211_wake_queues(hw); - } else { - /* - * Another wiphy is on another channel, start the new - * wiphy in paused state. - */ - aphy->state = ATH_WIPHY_PAUSED; - ieee80211_stop_queues(hw); - } - mutex_unlock(&sc->mutex); - return 0; - } - aphy->state = ATH_WIPHY_ACTIVE; - - /* setup initial channel */ - - sc->chan_idx = curchan->hw_value; - - init_channel = ath_get_curchannel(sc, hw); - - /* Reset SERDES registers */ - ath9k_hw_configpcipowersave(ah, 0, 0); - - /* - * The basic interface to setting the hardware in a good - * state is ``reset''. On return the hardware is known to - * be powered up and with interrupts disabled. This must - * be followed by initialization of the appropriate bits - * and then setup of the interrupt mask. - */ - spin_lock_bh(&sc->sc_resetlock); - r = ath9k_hw_reset(ah, init_channel, false); - if (r) { - ath_print(common, ATH_DBG_FATAL, - "Unable to reset hardware; reset status %d " - "(freq %u MHz)\n", r, - curchan->center_freq); - spin_unlock_bh(&sc->sc_resetlock); - goto mutex_unlock; + spin_lock_bh(&sc->sc_pcu_lock); + if (avp == sc->p2p_ps_vif) { + sc->p2p_ps_vif = NULL; + ath9k_update_p2p_ps_timer(sc, NULL); } - spin_unlock_bh(&sc->sc_resetlock); - - /* - * This is needed only to setup initial state - * but it's best done after a reset. - */ - ath_update_txpow(sc); + spin_unlock_bh(&sc->sc_pcu_lock); - /* - * Setup the hardware after reset: - * The receive engine is set going. - * Frame transmit is handled entirely - * in the frame output path; there's nothing to do - * here except setup the interrupt mask. - */ - if (ath_startrecv(sc) != 0) { - ath_print(common, ATH_DBG_FATAL, - "Unable to start recv logic\n"); - r = -EIO; - goto mutex_unlock; - } - - /* Setup our intr mask. */ - sc->imask = ATH9K_INT_RX | ATH9K_INT_TX - | ATH9K_INT_RXEOL | ATH9K_INT_RXORN - | ATH9K_INT_FATAL | ATH9K_INT_GLOBAL; - - if (ah->caps.hw_caps & ATH9K_HW_CAP_GTT) - sc->imask |= ATH9K_INT_GTT; - - if (ah->caps.hw_caps & ATH9K_HW_CAP_HT) - sc->imask |= ATH9K_INT_CST; - - ath_cache_conf_rate(sc, &hw->conf); - - sc->sc_flags &= ~SC_OP_INVALID; - - /* Disable BMISS interrupt when we're not associated */ - sc->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS); - ath9k_hw_set_interrupts(ah, sc->imask); + sc->nvifs--; + sc->tx99_vif = NULL; - ieee80211_wake_queues(hw); + if (ath9k_uses_beacons(vif->type)) + ath9k_beacon_remove_slot(sc, vif); - ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0); + ath9k_ps_wakeup(sc); + ath9k_calculate_summary_state(hw, NULL); + ath9k_ps_restore(sc); - if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) && - !ah->btcoex_hw.enabled) { - ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, - AR_STOMP_LOW_WLAN_WGHT); - ath9k_hw_btcoex_enable(ah); + ath_tx_node_cleanup(sc, &avp->mcast_node); - if (common->bus_ops->bt_coex_prep) - common->bus_ops->bt_coex_prep(common); - if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) - ath9k_btcoex_timer_resume(sc); - } - -mutex_unlock: mutex_unlock(&sc->mutex); - - return r; } -static int ath9k_tx(struct ieee80211_hw *hw, - struct sk_buff *skb) +static void ath9k_enable_ps(struct ath_softc *sc) { - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; - struct ath_common *common = ath9k_hw_common(sc->sc_ah); - struct ath_tx_control txctl; - int padpos, padsize; - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; + struct ath_hw *ah = sc->sc_ah; + struct ath_common *common = ath9k_hw_common(ah); - if (aphy->state != ATH_WIPHY_ACTIVE && aphy->state != ATH_WIPHY_SCAN) { - ath_print(common, ATH_DBG_XMIT, - "ath9k: %s: TX in unexpected wiphy state " - "%d\n", wiphy_name(hw->wiphy), aphy->state); - goto exit; - } + if (config_enabled(CONFIG_ATH9K_TX99)) + return; - if (sc->ps_enabled) { - /* - * mac80211 does not set PM field for normal data frames, so we - * need to update that based on the current PS mode. - */ - if (ieee80211_is_data(hdr->frame_control) && - !ieee80211_is_nullfunc(hdr->frame_control) && - !ieee80211_has_pm(hdr->frame_control)) { - ath_print(common, ATH_DBG_PS, "Add PM=1 for a TX frame " - "while in PS mode\n"); - hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); + sc->ps_enabled = true; + if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) { + if ((ah->imask & ATH9K_INT_TIM_TIMER) == 0) { + ah->imask |= ATH9K_INT_TIM_TIMER; + ath9k_hw_set_interrupts(ah); } + ath9k_hw_setrxabort(ah, 1); } - - if (unlikely(sc->sc_ah->power_mode != ATH9K_PM_AWAKE)) { - /* - * We are using PS-Poll and mac80211 can request TX while in - * power save mode. Need to wake up hardware for the TX to be - * completed and if needed, also for RX of buffered frames. - */ - ath9k_ps_wakeup(sc); - ath9k_hw_setrxabort(sc->sc_ah, 0); - if (ieee80211_is_pspoll(hdr->frame_control)) { - ath_print(common, ATH_DBG_PS, - "Sending PS-Poll to pick a buffered frame\n"); - sc->sc_flags |= SC_OP_WAIT_FOR_PSPOLL_DATA; - } else { - ath_print(common, ATH_DBG_PS, - "Wake up to complete TX\n"); - sc->sc_flags |= SC_OP_WAIT_FOR_TX_ACK; - } - /* - * The actual restore operation will happen only after - * the sc_flags bit is cleared. We are just dropping - * the ps_usecount here. - */ - ath9k_ps_restore(sc); - } - - memset(&txctl, 0, sizeof(struct ath_tx_control)); - - /* - * As a temporary workaround, assign seq# here; this will likely need - * to be cleaned up to work better with Beacon transmission and virtual - * BSSes. - */ - if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { - if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) - sc->tx.seq_no += 0x10; - hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); - hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no); - } - - /* Add the padding after the header if this is not already done */ - padpos = ath9k_cmn_padpos(hdr->frame_control); - padsize = padpos & 3; - if (padsize && skb->len>padpos) { - if (skb_headroom(skb) < padsize) - return -1; - skb_push(skb, padsize); - memmove(skb->data, skb->data + padsize, padpos); - } - - /* Check if a tx queue is available */ - - txctl.txq = ath_test_get_txq(sc, skb); - if (!txctl.txq) - goto exit; - - ath_print(common, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb); - - if (ath_tx_start(hw, skb, &txctl) != 0) { - ath_print(common, ATH_DBG_XMIT, "TX failed\n"); - goto exit; - } - - return 0; -exit: - dev_kfree_skb_any(skb); - return 0; + ath_dbg(common, PS, "PowerSave enabled\n"); } -/* - * Pause btcoex timer and bt duty cycle timer - */ -static void ath9k_btcoex_timer_pause(struct ath_softc *sc) +static void ath9k_disable_ps(struct ath_softc *sc) { - struct ath_btcoex *btcoex = &sc->btcoex; struct ath_hw *ah = sc->sc_ah; + struct ath_common *common = ath9k_hw_common(ah); - del_timer_sync(&btcoex->period_timer); - - if (btcoex->hw_timer_enabled) - ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer); + if (config_enabled(CONFIG_ATH9K_TX99)) + return; - btcoex->hw_timer_enabled = false; + sc->ps_enabled = false; + ath9k_hw_setpower(ah, ATH9K_PM_AWAKE); + if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) { + ath9k_hw_setrxabort(ah, 0); + sc->ps_flags &= ~(PS_WAIT_FOR_BEACON | + PS_WAIT_FOR_CAB | + PS_WAIT_FOR_PSPOLL_DATA | + PS_WAIT_FOR_TX_ACK); + if (ah->imask & ATH9K_INT_TIM_TIMER) { + ah->imask &= ~ATH9K_INT_TIM_TIMER; + ath9k_hw_set_interrupts(ah); + } + } + ath_dbg(common, PS, "PowerSave disabled\n"); } -static void ath9k_stop(struct ieee80211_hw *hw) +void ath9k_spectral_scan_trigger(struct ieee80211_hw *hw) { - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; + struct ath_softc *sc = hw->priv; struct ath_hw *ah = sc->sc_ah; struct ath_common *common = ath9k_hw_common(ah); + u32 rxfilter; - mutex_lock(&sc->mutex); - - aphy->state = ATH_WIPHY_INACTIVE; - - cancel_delayed_work_sync(&sc->ath_led_blink_work); - cancel_delayed_work_sync(&sc->tx_complete_work); - - if (!sc->num_sec_wiphy) { - cancel_delayed_work_sync(&sc->wiphy_work); - cancel_work_sync(&sc->chan_work); - } - - if (sc->sc_flags & SC_OP_INVALID) { - ath_print(common, ATH_DBG_ANY, "Device not present\n"); - mutex_unlock(&sc->mutex); + if (config_enabled(CONFIG_ATH9K_TX99)) return; - } - if (ath9k_wiphy_started(sc)) { - mutex_unlock(&sc->mutex); - return; /* another wiphy still in use */ + if (!ath9k_hw_ops(ah)->spectral_scan_trigger) { + ath_err(common, "spectrum analyzer not implemented on this hardware\n"); + return; } - /* Ensure HW is awake when we try to shut it down. */ ath9k_ps_wakeup(sc); - - if (ah->btcoex_hw.enabled) { - ath9k_hw_btcoex_disable(ah); - if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) - ath9k_btcoex_timer_pause(sc); - } - - /* make sure h/w will not generate any interrupt - * before setting the invalid flag. */ - ath9k_hw_set_interrupts(ah, 0); - - if (!(sc->sc_flags & SC_OP_INVALID)) { - ath_drain_all_txq(sc, false); - ath_stoprecv(sc); - ath9k_hw_phy_disable(ah); - } else - sc->rx.rxlink = NULL; - - /* disable HAL and put h/w to sleep */ - ath9k_hw_disable(ah); - ath9k_hw_configpcipowersave(ah, 1, 1); + rxfilter = ath9k_hw_getrxfilter(ah); + ath9k_hw_setrxfilter(ah, rxfilter | + ATH9K_RX_FILTER_PHYRADAR | + ATH9K_RX_FILTER_PHYERR); + + /* TODO: usually this should not be neccesary, but for some reason + * (or in some mode?) the trigger must be called after the + * configuration, otherwise the register will have its values reset + * (on my ar9220 to value 0x01002310) + */ + ath9k_spectral_scan_config(hw, sc->spectral_mode); + ath9k_hw_ops(ah)->spectral_scan_trigger(ah); ath9k_ps_restore(sc); - - /* Finally, put the chip in FULL SLEEP mode */ - ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP); - - sc->sc_flags |= SC_OP_INVALID; - - mutex_unlock(&sc->mutex); - - ath_print(common, ATH_DBG_CONFIG, "Driver halt\n"); } -static int ath9k_add_interface(struct ieee80211_hw *hw, - struct ieee80211_if_init_conf *conf) +int ath9k_spectral_scan_config(struct ieee80211_hw *hw, + enum spectral_mode spectral_mode) { - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; - struct ath_common *common = ath9k_hw_common(sc->sc_ah); - struct ath_vif *avp = (void *)conf->vif->drv_priv; - enum nl80211_iftype ic_opmode = NL80211_IFTYPE_UNSPECIFIED; - int ret = 0; - - mutex_lock(&sc->mutex); + struct ath_softc *sc = hw->priv; + struct ath_hw *ah = sc->sc_ah; + struct ath_common *common = ath9k_hw_common(ah); - if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK) && - sc->nvifs > 0) { - ret = -ENOBUFS; - goto out; + if (!ath9k_hw_ops(ah)->spectral_scan_trigger) { + ath_err(common, "spectrum analyzer not implemented on this hardware\n"); + return -1; } - switch (conf->type) { - case NL80211_IFTYPE_STATION: - ic_opmode = NL80211_IFTYPE_STATION; + switch (spectral_mode) { + case SPECTRAL_DISABLED: + sc->spec_config.enabled = 0; break; - case NL80211_IFTYPE_ADHOC: - case NL80211_IFTYPE_AP: - case NL80211_IFTYPE_MESH_POINT: - if (sc->nbcnvifs >= ATH_BCBUF) { - ret = -ENOBUFS; - goto out; - } - ic_opmode = conf->type; + case SPECTRAL_BACKGROUND: + /* send endless samples. + * TODO: is this really useful for "background"? + */ + sc->spec_config.endless = 1; + sc->spec_config.enabled = 1; + break; + case SPECTRAL_CHANSCAN: + case SPECTRAL_MANUAL: + sc->spec_config.endless = 0; + sc->spec_config.enabled = 1; break; default: - ath_print(common, ATH_DBG_FATAL, - "Interface type %d not yet supported\n", conf->type); - ret = -EOPNOTSUPP; - goto out; - } - - ath_print(common, ATH_DBG_CONFIG, - "Attach a VIF of type: %d\n", ic_opmode); - - /* Set the VIF opmode */ - avp->av_opmode = ic_opmode; - avp->av_bslot = -1; - - sc->nvifs++; - - if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK) - ath9k_set_bssid_mask(hw); - - if (sc->nvifs > 1) - goto out; /* skip global settings for secondary vif */ - - if (ic_opmode == NL80211_IFTYPE_AP) { - ath9k_hw_set_tsfadjust(sc->sc_ah, 1); - sc->sc_flags |= SC_OP_TSF_RESET; + return -1; } - /* Set the device opmode */ - sc->sc_ah->opmode = ic_opmode; - - /* - * Enable MIB interrupts when there are hardware phy counters. - * Note we only do this (at the moment) for station mode. - */ - if ((conf->type == NL80211_IFTYPE_STATION) || - (conf->type == NL80211_IFTYPE_ADHOC) || - (conf->type == NL80211_IFTYPE_MESH_POINT)) { - sc->imask |= ATH9K_INT_MIB; - sc->imask |= ATH9K_INT_TSFOOR; - } - - ath9k_hw_set_interrupts(sc->sc_ah, sc->imask); - - if (conf->type == NL80211_IFTYPE_AP || - conf->type == NL80211_IFTYPE_ADHOC || - conf->type == NL80211_IFTYPE_MONITOR) - ath_start_ani(common); - -out: - mutex_unlock(&sc->mutex); - return ret; -} - -static void ath9k_remove_interface(struct ieee80211_hw *hw, - struct ieee80211_if_init_conf *conf) -{ - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; - struct ath_common *common = ath9k_hw_common(sc->sc_ah); - struct ath_vif *avp = (void *)conf->vif->drv_priv; - int i; - - ath_print(common, ATH_DBG_CONFIG, "Detach Interface\n"); - - mutex_lock(&sc->mutex); - - /* Stop ANI */ - del_timer_sync(&common->ani.timer); - - /* Reclaim beacon resources */ - if ((sc->sc_ah->opmode == NL80211_IFTYPE_AP) || - (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) || - (sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT)) { - ath9k_ps_wakeup(sc); - ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq); - ath_beacon_return(sc, avp); - ath9k_ps_restore(sc); - } - - sc->sc_flags &= ~SC_OP_BEACONS; - - for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) { - if (sc->beacon.bslot[i] == conf->vif) { - printk(KERN_DEBUG "%s: vif had allocated beacon " - "slot\n", __func__); - sc->beacon.bslot[i] = NULL; - sc->beacon.bslot_aphy[i] = NULL; - } - } + ath9k_ps_wakeup(sc); + ath9k_hw_ops(ah)->spectral_scan_config(ah, &sc->spec_config); + ath9k_ps_restore(sc); - sc->nvifs--; + sc->spectral_mode = spectral_mode; - mutex_unlock(&sc->mutex); + return 0; } static int ath9k_config(struct ieee80211_hw *hw, u32 changed) { - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; - struct ath_common *common = ath9k_hw_common(sc->sc_ah); - struct ieee80211_conf *conf = &hw->conf; + struct ath_softc *sc = hw->priv; struct ath_hw *ah = sc->sc_ah; - bool disable_radio; + struct ath_common *common = ath9k_hw_common(ah); + struct ieee80211_conf *conf = &hw->conf; + bool reset_channel = false; + ath9k_ps_wakeup(sc); mutex_lock(&sc->mutex); - /* - * Leave this as the first check because we need to turn on the - * radio if it was disabled before prior to processing the rest - * of the changes. Likewise we must only disable the radio towards - * the end. - */ if (changed & IEEE80211_CONF_CHANGE_IDLE) { - bool enable_radio; - bool all_wiphys_idle; - bool idle = !!(conf->flags & IEEE80211_CONF_IDLE); - - spin_lock_bh(&sc->wiphy_lock); - all_wiphys_idle = ath9k_all_wiphys_idle(sc); - ath9k_set_wiphy_idle(aphy, idle); - - if (!idle && all_wiphys_idle) - enable_radio = true; - - /* - * After we unlock here its possible another wiphy - * can be re-renabled so to account for that we will - * only disable the radio toward the end of this routine - * if by then all wiphys are still idle. - */ - spin_unlock_bh(&sc->wiphy_lock); - - if (enable_radio) { - ath_radio_enable(sc, hw); - ath_print(common, ATH_DBG_CONFIG, - "not-idle: enabling radio\n"); + sc->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE); + if (sc->ps_idle) { + ath_cancel_work(sc); + ath9k_stop_btcoex(sc); + } else { + ath9k_start_btcoex(sc); + /* + * The chip needs a reset to properly wake up from + * full sleep + */ + reset_channel = ah->chip_fullsleep; } } @@ -2726,94 +1372,43 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed) * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode. */ if (changed & IEEE80211_CONF_CHANGE_PS) { - if (conf->flags & IEEE80211_CONF_PS) { - sc->sc_flags |= SC_OP_PS_ENABLED; - if (!(ah->caps.hw_caps & - ATH9K_HW_CAP_AUTOSLEEP)) { - if ((sc->imask & ATH9K_INT_TIM_TIMER) == 0) { - sc->imask |= ATH9K_INT_TIM_TIMER; - ath9k_hw_set_interrupts(sc->sc_ah, - sc->imask); - } - } - /* - * At this point we know hardware has received an ACK - * of a previously sent null data frame. - */ - if ((sc->sc_flags & SC_OP_NULLFUNC_COMPLETED)) { - sc->sc_flags &= ~SC_OP_NULLFUNC_COMPLETED; - sc->ps_enabled = true; - ath9k_hw_setrxabort(sc->sc_ah, 1); - } - } else { - sc->ps_enabled = false; - sc->sc_flags &= ~(SC_OP_PS_ENABLED | - SC_OP_NULLFUNC_COMPLETED); - ath9k_setpower(sc, ATH9K_PM_AWAKE); - if (!(ah->caps.hw_caps & - ATH9K_HW_CAP_AUTOSLEEP)) { - ath9k_hw_setrxabort(sc->sc_ah, 0); - sc->sc_flags &= ~(SC_OP_WAIT_FOR_BEACON | - SC_OP_WAIT_FOR_CAB | - SC_OP_WAIT_FOR_PSPOLL_DATA | - SC_OP_WAIT_FOR_TX_ACK); - if (sc->imask & ATH9K_INT_TIM_TIMER) { - sc->imask &= ~ATH9K_INT_TIM_TIMER; - ath9k_hw_set_interrupts(sc->sc_ah, - sc->imask); - } - } - } + unsigned long flags; + spin_lock_irqsave(&sc->sc_pm_lock, flags); + if (conf->flags & IEEE80211_CONF_PS) + ath9k_enable_ps(sc); + else + ath9k_disable_ps(sc); + spin_unlock_irqrestore(&sc->sc_pm_lock, flags); } - if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { - struct ieee80211_channel *curchan = hw->conf.channel; - int pos = curchan->hw_value; - - aphy->chan_idx = pos; - aphy->chan_is_ht = conf_is_ht(conf); - - if (aphy->state == ATH_WIPHY_SCAN || - aphy->state == ATH_WIPHY_ACTIVE) - ath9k_wiphy_pause_all_forced(sc, aphy); - else { - /* - * Do not change operational channel based on a paused - * wiphy changes. - */ - goto skip_chan_change; + if (changed & IEEE80211_CONF_CHANGE_MONITOR) { + if (conf->flags & IEEE80211_CONF_MONITOR) { + ath_dbg(common, CONFIG, "Monitor mode is enabled\n"); + sc->sc_ah->is_monitoring = true; + } else { + ath_dbg(common, CONFIG, "Monitor mode is disabled\n"); + sc->sc_ah->is_monitoring = false; } + } - ath_print(common, ATH_DBG_CONFIG, "Set channel: %d MHz\n", - curchan->center_freq); - - /* XXX: remove me eventualy */ - ath9k_update_ichannel(sc, hw, &sc->sc_ah->channels[pos]); - - ath_update_chainmask(sc, conf_is_ht(conf)); - - if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) { - ath_print(common, ATH_DBG_FATAL, - "Unable to set channel\n"); + if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || reset_channel) { + if (ath_set_channel(sc, &hw->conf.chandef) < 0) { + ath_err(common, "Unable to set channel\n"); mutex_unlock(&sc->mutex); + ath9k_ps_restore(sc); return -EINVAL; } } -skip_chan_change: - if (changed & IEEE80211_CONF_CHANGE_POWER) + if (changed & IEEE80211_CONF_CHANGE_POWER) { + ath_dbg(common, CONFIG, "Set power: %d\n", conf->power_level); sc->config.txpowlimit = 2 * conf->power_level; - - spin_lock_bh(&sc->wiphy_lock); - disable_radio = ath9k_all_wiphys_idle(sc); - spin_unlock_bh(&sc->wiphy_lock); - - if (disable_radio) { - ath_print(common, ATH_DBG_CONFIG, "idle: disabling radio\n"); - ath_radio_disable(sc, hw); + ath9k_cmn_update_txpow(ah, sc->curtxpow, + sc->config.txpowlimit, &sc->curtxpow); } mutex_unlock(&sc->mutex); + ath9k_ps_restore(sc); return 0; } @@ -2825,6 +1420,7 @@ skip_chan_change: FIF_PSPOLL | \ FIF_OTHER_BSS | \ FIF_BCN_PRBRESP_PROMISC | \ + FIF_PROBE_REQ | \ FIF_FCSFAIL) /* FIXME: sc->sc_full_reset ? */ @@ -2833,8 +1429,7 @@ static void ath9k_configure_filter(struct ieee80211_hw *hw, unsigned int *total_flags, u64 multicast) { - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; + struct ath_softc *sc = hw->priv; u32 rfilt; changed_flags &= SUPPORTED_FILTERS; @@ -2846,42 +1441,114 @@ static void ath9k_configure_filter(struct ieee80211_hw *hw, ath9k_hw_setrxfilter(sc->sc_ah, rfilt); ath9k_ps_restore(sc); - ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG, - "Set HW RX filter: 0x%x\n", rfilt); + ath_dbg(ath9k_hw_common(sc->sc_ah), CONFIG, "Set HW RX filter: 0x%x\n", + rfilt); } -static void ath9k_sta_notify(struct ieee80211_hw *hw, +static int ath9k_sta_add(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct ath_softc *sc = hw->priv; + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + struct ath_node *an = (struct ath_node *) sta->drv_priv; + struct ieee80211_key_conf ps_key = { }; + int key; + + ath_node_attach(sc, sta, vif); + + if (vif->type != NL80211_IFTYPE_AP && + vif->type != NL80211_IFTYPE_AP_VLAN) + return 0; + + key = ath_key_config(common, vif, sta, &ps_key); + if (key > 0) { + an->ps_key = key; + an->key_idx[0] = key; + } + + return 0; +} + +static void ath9k_del_ps_key(struct ath_softc *sc, struct ieee80211_vif *vif, - enum sta_notify_cmd cmd, struct ieee80211_sta *sta) { - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + struct ath_node *an = (struct ath_node *) sta->drv_priv; + struct ieee80211_key_conf ps_key = { .hw_key_idx = an->ps_key }; + + if (!an->ps_key) + return; + + ath_key_delete(common, &ps_key); + an->ps_key = 0; + an->key_idx[0] = 0; +} + +static int ath9k_sta_remove(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct ath_softc *sc = hw->priv; + + ath9k_del_ps_key(sc, vif, sta); + ath_node_detach(sc, sta); + + return 0; +} + +static void ath9k_sta_set_tx_filter(struct ath_hw *ah, + struct ath_node *an, + bool set) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(an->key_idx); i++) { + if (!an->key_idx[i]) + continue; + ath9k_hw_set_tx_filter(ah, an->key_idx[i], set); + } +} + +static void ath9k_sta_notify(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + enum sta_notify_cmd cmd, + struct ieee80211_sta *sta) +{ + struct ath_softc *sc = hw->priv; + struct ath_node *an = (struct ath_node *) sta->drv_priv; switch (cmd) { - case STA_NOTIFY_ADD: - ath_node_attach(sc, sta); + case STA_NOTIFY_SLEEP: + an->sleeping = true; + ath_tx_aggr_sleep(sta, sc, an); + ath9k_sta_set_tx_filter(sc->sc_ah, an, true); break; - case STA_NOTIFY_REMOVE: - ath_node_detach(sc, sta); - break; - default: + case STA_NOTIFY_AWAKE: + ath9k_sta_set_tx_filter(sc->sc_ah, an, false); + an->sleeping = false; + ath_tx_aggr_wakeup(sc, an); break; } } -static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue, +static int ath9k_conf_tx(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, u16 queue, const struct ieee80211_tx_queue_params *params) { - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; + struct ath_softc *sc = hw->priv; struct ath_common *common = ath9k_hw_common(sc->sc_ah); + struct ath_txq *txq; struct ath9k_tx_queue_info qi; - int ret = 0, qnum; + int ret = 0; - if (queue >= WME_NUM_AC) + if (queue >= IEEE80211_NUM_ACS) return 0; + txq = sc->tx.txq_map[queue]; + + ath9k_ps_wakeup(sc); mutex_lock(&sc->mutex); memset(&qi, 0, sizeof(struct ath9k_tx_queue_info)); @@ -2889,24 +1556,20 @@ static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue, qi.tqi_aifs = params->aifs; qi.tqi_cwmin = params->cw_min; qi.tqi_cwmax = params->cw_max; - qi.tqi_burstTime = params->txop; - qnum = ath_get_hal_qnum(queue, sc); + qi.tqi_burstTime = params->txop * 32; - ath_print(common, ATH_DBG_CONFIG, - "Configure tx [queue/halq] [%d/%d], " - "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n", - queue, qnum, params->aifs, params->cw_min, - params->cw_max, params->txop); + ath_dbg(common, CONFIG, + "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n", + queue, txq->axq_qnum, params->aifs, params->cw_min, + params->cw_max, params->txop); - ret = ath_txq_update(sc, qnum, &qi); + ath_update_max_aggr_framelen(sc, queue, qi.tqi_burstTime); + ret = ath_txq_update(sc, txq->axq_qnum, &qi); if (ret) - ath_print(common, ATH_DBG_FATAL, "TXQ Update failed\n"); - - if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) - if ((qnum == sc->tx.hwq_map[ATH9K_WME_AC_BE]) && !ret) - ath_beaconq_config(sc); + ath_err(common, "TXQ Update failed\n"); mutex_unlock(&sc->mutex); + ath9k_ps_restore(sc); return ret; } @@ -2917,34 +1580,74 @@ static int ath9k_set_key(struct ieee80211_hw *hw, struct ieee80211_sta *sta, struct ieee80211_key_conf *key) { - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; + struct ath_softc *sc = hw->priv; struct ath_common *common = ath9k_hw_common(sc->sc_ah); - int ret = 0; + struct ath_node *an = NULL; + int ret = 0, i; - if (modparam_nohwcrypt) + if (ath9k_modparam_nohwcrypt) return -ENOSPC; + if ((vif->type == NL80211_IFTYPE_ADHOC || + vif->type == NL80211_IFTYPE_MESH_POINT) && + (key->cipher == WLAN_CIPHER_SUITE_TKIP || + key->cipher == WLAN_CIPHER_SUITE_CCMP) && + !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { + /* + * For now, disable hw crypto for the RSN IBSS group keys. This + * could be optimized in the future to use a modified key cache + * design to support per-STA RX GTK, but until that gets + * implemented, use of software crypto for group addressed + * frames is a acceptable to allow RSN IBSS to be used. + */ + return -EOPNOTSUPP; + } + mutex_lock(&sc->mutex); ath9k_ps_wakeup(sc); - ath_print(common, ATH_DBG_CONFIG, "Set HW Key\n"); + ath_dbg(common, CONFIG, "Set HW Key %d\n", cmd); + if (sta) + an = (struct ath_node *)sta->drv_priv; switch (cmd) { case SET_KEY: + if (sta) + ath9k_del_ps_key(sc, vif, sta); + + key->hw_key_idx = 0; ret = ath_key_config(common, vif, sta, key); if (ret >= 0) { key->hw_key_idx = ret; /* push IV and Michael MIC generation to stack */ key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; - if (key->alg == ALG_TKIP) + if (key->cipher == WLAN_CIPHER_SUITE_TKIP) key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; - if (sc->sc_ah->sw_mgmt_crypto && key->alg == ALG_CCMP) - key->flags |= IEEE80211_KEY_FLAG_SW_MGMT; + if (sc->sc_ah->sw_mgmt_crypto && + key->cipher == WLAN_CIPHER_SUITE_CCMP) + key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; ret = 0; } + if (an && key->hw_key_idx) { + for (i = 0; i < ARRAY_SIZE(an->key_idx); i++) { + if (an->key_idx[i]) + continue; + an->key_idx[i] = key->hw_key_idx; + break; + } + WARN_ON(i == ARRAY_SIZE(an->key_idx)); + } break; case DISABLE_KEY: ath_key_delete(common, key); + if (an) { + for (i = 0; i < ARRAY_SIZE(an->key_idx); i++) { + if (an->key_idx[i] != key->hw_key_idx) + continue; + an->key_idx[i] = 0; + break; + } + } + key->hw_key_idx = 0; break; default: ret = -EINVAL; @@ -2956,127 +1659,241 @@ static int ath9k_set_key(struct ieee80211_hw *hw, return ret; } +static void ath9k_set_assoc_state(struct ath_softc *sc, + struct ieee80211_vif *vif) +{ + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + struct ath_vif *avp = (void *)vif->drv_priv; + struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; + unsigned long flags; + + set_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags); + avp->primary_sta_vif = true; + + /* + * Set the AID, BSSID and do beacon-sync only when + * the HW opmode is STATION. + * + * But the primary bit is set above in any case. + */ + if (sc->sc_ah->opmode != NL80211_IFTYPE_STATION) + return; + + memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); + common->curaid = bss_conf->aid; + ath9k_hw_write_associd(sc->sc_ah); + + common->last_rssi = ATH_RSSI_DUMMY_MARKER; + sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER; + + spin_lock_irqsave(&sc->sc_pm_lock, flags); + sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON; + spin_unlock_irqrestore(&sc->sc_pm_lock, flags); + + if (ath9k_hw_mci_is_enabled(sc->sc_ah)) + ath9k_mci_update_wlan_channels(sc, false); + + ath_dbg(common, CONFIG, + "Primary Station interface: %pM, BSSID: %pM\n", + vif->addr, common->curbssid); +} + +static void ath9k_bss_assoc_iter(void *data, u8 *mac, struct ieee80211_vif *vif) +{ + struct ath_softc *sc = data; + struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + + if (test_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags)) + return; + + if (bss_conf->assoc) + ath9k_set_assoc_state(sc, vif); +} + +void ath9k_p2p_ps_timer(void *priv) +{ + struct ath_softc *sc = priv; + struct ath_vif *avp = sc->p2p_ps_vif; + struct ieee80211_vif *vif; + struct ieee80211_sta *sta; + struct ath_node *an; + u32 tsf; + + if (!avp) + return; + + tsf = ath9k_hw_gettsf32(sc->sc_ah); + if (!avp->noa.absent) + tsf += ATH_P2P_PS_STOP_TIME; + + if (!avp->noa.has_next_tsf || + avp->noa.next_tsf - tsf > BIT(31)) + ieee80211_update_p2p_noa(&avp->noa, tsf); + + ath9k_update_p2p_ps_timer(sc, avp); + + rcu_read_lock(); + + vif = avp->vif; + sta = ieee80211_find_sta(vif, vif->bss_conf.bssid); + if (!sta) + goto out; + + an = (void *) sta->drv_priv; + if (an->sleeping == !!avp->noa.absent) + goto out; + + an->sleeping = avp->noa.absent; + if (an->sleeping) + ath_tx_aggr_sleep(sta, sc, an); + else + ath_tx_aggr_wakeup(sc, an); + +out: + rcu_read_unlock(); +} + +void ath9k_update_p2p_ps(struct ath_softc *sc, struct ieee80211_vif *vif) +{ + struct ath_vif *avp = (void *)vif->drv_priv; + u32 tsf; + + if (!sc->p2p_ps_timer) + return; + + if (vif->type != NL80211_IFTYPE_STATION || !vif->p2p) + return; + + sc->p2p_ps_vif = avp; + tsf = ath9k_hw_gettsf32(sc->sc_ah); + ieee80211_parse_p2p_noa(&vif->bss_conf.p2p_noa_attr, &avp->noa, tsf); + ath9k_update_p2p_ps_timer(sc, avp); +} + static void ath9k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *bss_conf, u32 changed) { - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; +#define CHECK_ANI \ + (BSS_CHANGED_ASSOC | \ + BSS_CHANGED_IBSS | \ + BSS_CHANGED_BEACON_ENABLED) + + struct ath_softc *sc = hw->priv; struct ath_hw *ah = sc->sc_ah; struct ath_common *common = ath9k_hw_common(ah); struct ath_vif *avp = (void *)vif->drv_priv; - int error; + unsigned long flags; + int slottime; + ath9k_ps_wakeup(sc); mutex_lock(&sc->mutex); - if (changed & BSS_CHANGED_BSSID) { - /* Set BSSID */ - memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); - memcpy(avp->bssid, bss_conf->bssid, ETH_ALEN); - common->curaid = 0; - ath9k_hw_write_associd(ah); - - /* Set aggregation protection mode parameters */ - sc->config.ath_aggr_prot = 0; + if (changed & BSS_CHANGED_ASSOC) { + ath_dbg(common, CONFIG, "BSSID %pM Changed ASSOC %d\n", + bss_conf->bssid, bss_conf->assoc); - /* Only legacy IBSS for now */ - if (vif->type == NL80211_IFTYPE_ADHOC) - ath_update_chainmask(sc, 0); + if (avp->primary_sta_vif && !bss_conf->assoc) { + clear_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags); + avp->primary_sta_vif = false; - ath_print(common, ATH_DBG_CONFIG, - "BSSID: %pM aid: 0x%x\n", - common->curbssid, common->curaid); + if (ah->opmode == NL80211_IFTYPE_STATION) + clear_bit(ATH_OP_BEACONS, &common->op_flags); + } - /* need to reconfigure the beacon */ - sc->sc_flags &= ~SC_OP_BEACONS ; + ieee80211_iterate_active_interfaces_atomic( + sc->hw, IEEE80211_IFACE_ITER_RESUME_ALL, + ath9k_bss_assoc_iter, sc); + + if (!test_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags) && + ah->opmode == NL80211_IFTYPE_STATION) { + memset(common->curbssid, 0, ETH_ALEN); + common->curaid = 0; + ath9k_hw_write_associd(sc->sc_ah); + if (ath9k_hw_mci_is_enabled(sc->sc_ah)) + ath9k_mci_update_wlan_channels(sc, true); + } } - /* Enable transmission of beacons (AP, IBSS, MESH) */ - if ((changed & BSS_CHANGED_BEACON) || - ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon)) { - ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq); - error = ath_beacon_alloc(aphy, vif); - if (!error) - ath_beacon_config(sc, vif); + if (changed & BSS_CHANGED_IBSS) { + memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); + common->curaid = bss_conf->aid; + ath9k_hw_write_associd(sc->sc_ah); } - /* Disable transmission of beacons */ - if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon) - ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq); + if ((changed & BSS_CHANGED_BEACON_ENABLED) || + (changed & BSS_CHANGED_BEACON_INT)) + ath9k_beacon_config(sc, vif, changed); - if (changed & BSS_CHANGED_BEACON_INT) { - sc->beacon_interval = bss_conf->beacon_int; - /* - * In case of AP mode, the HW TSF has to be reset - * when the beacon interval changes. - */ + if (changed & BSS_CHANGED_ERP_SLOT) { + if (bss_conf->use_short_slot) + slottime = 9; + else + slottime = 20; if (vif->type == NL80211_IFTYPE_AP) { - sc->sc_flags |= SC_OP_TSF_RESET; - ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq); - error = ath_beacon_alloc(aphy, vif); - if (!error) - ath_beacon_config(sc, vif); + /* + * Defer update, so that connected stations can adjust + * their settings at the same time. + * See beacon.c for more details + */ + sc->beacon.slottime = slottime; + sc->beacon.updateslot = UPDATE; } else { - ath_beacon_config(sc, vif); + ah->slottime = slottime; + ath9k_hw_init_global_settings(ah); } } - if (changed & BSS_CHANGED_ERP_PREAMBLE) { - ath_print(common, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n", - bss_conf->use_short_preamble); - if (bss_conf->use_short_preamble) - sc->sc_flags |= SC_OP_PREAMBLE_SHORT; - else - sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT; + if (changed & BSS_CHANGED_P2P_PS) { + spin_lock_bh(&sc->sc_pcu_lock); + spin_lock_irqsave(&sc->sc_pm_lock, flags); + if (!(sc->ps_flags & PS_BEACON_SYNC)) + ath9k_update_p2p_ps(sc, vif); + spin_unlock_irqrestore(&sc->sc_pm_lock, flags); + spin_unlock_bh(&sc->sc_pcu_lock); } - if (changed & BSS_CHANGED_ERP_CTS_PROT) { - ath_print(common, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n", - bss_conf->use_cts_prot); - if (bss_conf->use_cts_prot && - hw->conf.channel->band != IEEE80211_BAND_5GHZ) - sc->sc_flags |= SC_OP_PROTECT_ENABLE; - else - sc->sc_flags &= ~SC_OP_PROTECT_ENABLE; - } - - if (changed & BSS_CHANGED_ASSOC) { - ath_print(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n", - bss_conf->assoc); - ath9k_bss_assoc_info(sc, vif, bss_conf); - } + if (changed & CHECK_ANI) + ath_check_ani(sc); mutex_unlock(&sc->mutex); + ath9k_ps_restore(sc); + +#undef CHECK_ANI } -static u64 ath9k_get_tsf(struct ieee80211_hw *hw) +static u64 ath9k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { + struct ath_softc *sc = hw->priv; u64 tsf; - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; mutex_lock(&sc->mutex); + ath9k_ps_wakeup(sc); tsf = ath9k_hw_gettsf64(sc->sc_ah); + ath9k_ps_restore(sc); mutex_unlock(&sc->mutex); return tsf; } -static void ath9k_set_tsf(struct ieee80211_hw *hw, u64 tsf) +static void ath9k_set_tsf(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + u64 tsf) { - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; + struct ath_softc *sc = hw->priv; mutex_lock(&sc->mutex); + ath9k_ps_wakeup(sc); ath9k_hw_settsf64(sc->sc_ah, tsf); + ath9k_ps_restore(sc); mutex_unlock(&sc->mutex); } -static void ath9k_reset_tsf(struct ieee80211_hw *hw) +static void ath9k_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; + struct ath_softc *sc = hw->priv; mutex_lock(&sc->mutex); @@ -3091,29 +1908,34 @@ static int ath9k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, enum ieee80211_ampdu_mlme_action action, struct ieee80211_sta *sta, - u16 tid, u16 *ssn) + u16 tid, u16 *ssn, u8 buf_size) { - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; + struct ath_softc *sc = hw->priv; + bool flush = false; int ret = 0; + mutex_lock(&sc->mutex); + switch (action) { case IEEE80211_AMPDU_RX_START: - if (!(sc->sc_flags & SC_OP_RXAGGR)) - ret = -ENOTSUPP; break; case IEEE80211_AMPDU_RX_STOP: break; case IEEE80211_AMPDU_TX_START: ath9k_ps_wakeup(sc); - ath_tx_aggr_start(sc, sta, tid, ssn); - ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); + ret = ath_tx_aggr_start(sc, sta, tid, ssn); + if (!ret) + ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); ath9k_ps_restore(sc); break; - case IEEE80211_AMPDU_TX_STOP: + case IEEE80211_AMPDU_TX_STOP_FLUSH: + case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: + flush = true; + case IEEE80211_AMPDU_TX_STOP_CONT: ath9k_ps_wakeup(sc); ath_tx_aggr_stop(sc, sta, tid); - ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); + if (!flush) + ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); ath9k_ps_restore(sc); break; case IEEE80211_AMPDU_TX_OPERATIONAL: @@ -3122,52 +1944,290 @@ static int ath9k_ampdu_action(struct ieee80211_hw *hw, ath9k_ps_restore(sc); break; default: - ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL, - "Unknown AMPDU action\n"); + ath_err(ath9k_hw_common(sc->sc_ah), "Unknown AMPDU action\n"); } + mutex_unlock(&sc->mutex); + return ret; } -static void ath9k_sw_scan_start(struct ieee80211_hw *hw) +static int ath9k_get_survey(struct ieee80211_hw *hw, int idx, + struct survey_info *survey) { - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; + struct ath_softc *sc = hw->priv; + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + struct ieee80211_supported_band *sband; + struct ieee80211_channel *chan; + int pos; + + if (config_enabled(CONFIG_ATH9K_TX99)) + return -EOPNOTSUPP; + + spin_lock_bh(&common->cc_lock); + if (idx == 0) + ath_update_survey_stats(sc); + + sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ]; + if (sband && idx >= sband->n_channels) { + idx -= sband->n_channels; + sband = NULL; + } + + if (!sband) + sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ]; + + if (!sband || idx >= sband->n_channels) { + spin_unlock_bh(&common->cc_lock); + return -ENOENT; + } + + chan = &sband->channels[idx]; + pos = chan->hw_value; + memcpy(survey, &sc->survey[pos], sizeof(*survey)); + survey->channel = chan; + spin_unlock_bh(&common->cc_lock); + + return 0; +} + +static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class) +{ + struct ath_softc *sc = hw->priv; + struct ath_hw *ah = sc->sc_ah; + + if (config_enabled(CONFIG_ATH9K_TX99)) + return; mutex_lock(&sc->mutex); - if (ath9k_wiphy_scanning(sc)) { - printk(KERN_DEBUG "ath9k: Two wiphys trying to scan at the " - "same time\n"); - /* - * Do not allow the concurrent scanning state for now. This - * could be improved with scanning control moved into ath9k. - */ + ah->coverage_class = coverage_class; + + ath9k_ps_wakeup(sc); + ath9k_hw_init_global_settings(ah); + ath9k_ps_restore(sc); + + mutex_unlock(&sc->mutex); +} + +static bool ath9k_has_tx_pending(struct ath_softc *sc) +{ + int i, npend = 0; + + for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) { + if (!ATH_TXQ_SETUP(sc, i)) + continue; + + if (!sc->tx.txq[i].axq_depth) + continue; + + npend = ath9k_has_pending_frames(sc, &sc->tx.txq[i]); + if (npend) + break; + } + + return !!npend; +} + +static void ath9k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + u32 queues, bool drop) +{ + struct ath_softc *sc = hw->priv; + struct ath_hw *ah = sc->sc_ah; + struct ath_common *common = ath9k_hw_common(ah); + int timeout = HZ / 5; /* 200 ms */ + bool drain_txq; + + mutex_lock(&sc->mutex); + cancel_delayed_work_sync(&sc->tx_complete_work); + + if (ah->ah_flags & AH_UNPLUGGED) { + ath_dbg(common, ANY, "Device has been unplugged!\n"); + mutex_unlock(&sc->mutex); + return; + } + + if (test_bit(ATH_OP_INVALID, &common->op_flags)) { + ath_dbg(common, ANY, "Device not present\n"); mutex_unlock(&sc->mutex); return; } - aphy->state = ATH_WIPHY_SCAN; - ath9k_wiphy_pause_all_forced(sc, aphy); + if (wait_event_timeout(sc->tx_wait, !ath9k_has_tx_pending(sc), + timeout) > 0) + drop = false; - spin_lock_bh(&sc->ani_lock); - sc->sc_flags |= SC_OP_SCANNING; - spin_unlock_bh(&sc->ani_lock); + if (drop) { + ath9k_ps_wakeup(sc); + spin_lock_bh(&sc->sc_pcu_lock); + drain_txq = ath_drain_all_txq(sc); + spin_unlock_bh(&sc->sc_pcu_lock); + + if (!drain_txq) + ath_reset(sc); + + ath9k_ps_restore(sc); + ieee80211_wake_queues(hw); + } + + ieee80211_queue_delayed_work(hw, &sc->tx_complete_work, 0); mutex_unlock(&sc->mutex); } -static void ath9k_sw_scan_complete(struct ieee80211_hw *hw) +static bool ath9k_tx_frames_pending(struct ieee80211_hw *hw) { - struct ath_wiphy *aphy = hw->priv; - struct ath_softc *sc = aphy->sc; + struct ath_softc *sc = hw->priv; + int i; - mutex_lock(&sc->mutex); - spin_lock_bh(&sc->ani_lock); - aphy->state = ATH_WIPHY_ACTIVE; - sc->sc_flags &= ~SC_OP_SCANNING; - sc->sc_flags |= SC_OP_FULL_RESET; - spin_unlock_bh(&sc->ani_lock); - ath_beacon_config(sc, NULL); - mutex_unlock(&sc->mutex); + for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) { + if (!ATH_TXQ_SETUP(sc, i)) + continue; + + if (ath9k_has_pending_frames(sc, &sc->tx.txq[i])) + return true; + } + return false; +} + +static int ath9k_tx_last_beacon(struct ieee80211_hw *hw) +{ + struct ath_softc *sc = hw->priv; + struct ath_hw *ah = sc->sc_ah; + struct ieee80211_vif *vif; + struct ath_vif *avp; + struct ath_buf *bf; + struct ath_tx_status ts; + bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA); + int status; + + vif = sc->beacon.bslot[0]; + if (!vif) + return 0; + + if (!vif->bss_conf.enable_beacon) + return 0; + + avp = (void *)vif->drv_priv; + + if (!sc->beacon.tx_processed && !edma) { + tasklet_disable(&sc->bcon_tasklet); + + bf = avp->av_bcbuf; + if (!bf || !bf->bf_mpdu) + goto skip; + + status = ath9k_hw_txprocdesc(ah, bf->bf_desc, &ts); + if (status == -EINPROGRESS) + goto skip; + + sc->beacon.tx_processed = true; + sc->beacon.tx_last = !(ts.ts_status & ATH9K_TXERR_MASK); + +skip: + tasklet_enable(&sc->bcon_tasklet); + } + + return sc->beacon.tx_last; +} + +static int ath9k_get_stats(struct ieee80211_hw *hw, + struct ieee80211_low_level_stats *stats) +{ + struct ath_softc *sc = hw->priv; + struct ath_hw *ah = sc->sc_ah; + struct ath9k_mib_stats *mib_stats = &ah->ah_mibStats; + + stats->dot11ACKFailureCount = mib_stats->ackrcv_bad; + stats->dot11RTSFailureCount = mib_stats->rts_bad; + stats->dot11FCSErrorCount = mib_stats->fcs_bad; + stats->dot11RTSSuccessCount = mib_stats->rts_good; + return 0; +} + +static u32 fill_chainmask(u32 cap, u32 new) +{ + u32 filled = 0; + int i; + + for (i = 0; cap && new; i++, cap >>= 1) { + if (!(cap & BIT(0))) + continue; + + if (new & BIT(0)) + filled |= BIT(i); + + new >>= 1; + } + + return filled; +} + +static bool validate_antenna_mask(struct ath_hw *ah, u32 val) +{ + if (AR_SREV_9300_20_OR_LATER(ah)) + return true; + + switch (val & 0x7) { + case 0x1: + case 0x3: + case 0x7: + return true; + case 0x2: + return (ah->caps.rx_chainmask == 1); + default: + return false; + } +} + +static int ath9k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant) +{ + struct ath_softc *sc = hw->priv; + struct ath_hw *ah = sc->sc_ah; + + if (ah->caps.rx_chainmask != 1) + rx_ant |= tx_ant; + + if (!validate_antenna_mask(ah, rx_ant) || !tx_ant) + return -EINVAL; + + sc->ant_rx = rx_ant; + sc->ant_tx = tx_ant; + + if (ah->caps.rx_chainmask == 1) + return 0; + + /* AR9100 runs into calibration issues if not all rx chains are enabled */ + if (AR_SREV_9100(ah)) + ah->rxchainmask = 0x7; + else + ah->rxchainmask = fill_chainmask(ah->caps.rx_chainmask, rx_ant); + + ah->txchainmask = fill_chainmask(ah->caps.tx_chainmask, tx_ant); + ath9k_cmn_reload_chainmask(ah); + + return 0; +} + +static int ath9k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) +{ + struct ath_softc *sc = hw->priv; + + *tx_ant = sc->ant_tx; + *rx_ant = sc->ant_rx; + return 0; +} + +static void ath9k_sw_scan_start(struct ieee80211_hw *hw) +{ + struct ath_softc *sc = hw->priv; + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + set_bit(ATH_OP_SCANNING, &common->op_flags); +} + +static void ath9k_sw_scan_complete(struct ieee80211_hw *hw) +{ + struct ath_softc *sc = hw->priv; + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + clear_bit(ATH_OP_SCANNING, &common->op_flags); } struct ieee80211_ops ath9k_ops = { @@ -3175,9 +2235,12 @@ struct ieee80211_ops ath9k_ops = { .start = ath9k_start, .stop = ath9k_stop, .add_interface = ath9k_add_interface, + .change_interface = ath9k_change_interface, .remove_interface = ath9k_remove_interface, .config = ath9k_config, .configure_filter = ath9k_configure_filter, + .sta_add = ath9k_sta_add, + .sta_remove = ath9k_sta_remove, .sta_notify = ath9k_sta_notify, .conf_tx = ath9k_conf_tx, .bss_info_changed = ath9k_bss_info_changed, @@ -3186,67 +2249,32 @@ struct ieee80211_ops ath9k_ops = { .set_tsf = ath9k_set_tsf, .reset_tsf = ath9k_reset_tsf, .ampdu_action = ath9k_ampdu_action, - .sw_scan_start = ath9k_sw_scan_start, - .sw_scan_complete = ath9k_sw_scan_complete, + .get_survey = ath9k_get_survey, .rfkill_poll = ath9k_rfkill_poll_state, + .set_coverage_class = ath9k_set_coverage_class, + .flush = ath9k_flush, + .tx_frames_pending = ath9k_tx_frames_pending, + .tx_last_beacon = ath9k_tx_last_beacon, + .release_buffered_frames = ath9k_release_buffered_frames, + .get_stats = ath9k_get_stats, + .set_antenna = ath9k_set_antenna, + .get_antenna = ath9k_get_antenna, + +#ifdef CONFIG_ATH9K_WOW + .suspend = ath9k_suspend, + .resume = ath9k_resume, + .set_wakeup = ath9k_set_wakeup, +#endif + +#ifdef CONFIG_ATH9K_DEBUGFS + .get_et_sset_count = ath9k_get_et_sset_count, + .get_et_stats = ath9k_get_et_stats, + .get_et_strings = ath9k_get_et_strings, +#endif + +#if defined(CONFIG_MAC80211_DEBUGFS) && defined(CONFIG_ATH9K_STATION_STATISTICS) + .sta_add_debugfs = ath9k_sta_add_debugfs, +#endif + .sw_scan_start = ath9k_sw_scan_start, + .sw_scan_complete = ath9k_sw_scan_complete, }; - -static int __init ath9k_init(void) -{ - int error; - - /* Register rate control algorithm */ - error = ath_rate_control_register(); - if (error != 0) { - printk(KERN_ERR - "ath9k: Unable to register rate control " - "algorithm: %d\n", - error); - goto err_out; - } - - error = ath9k_debug_create_root(); - if (error) { - printk(KERN_ERR - "ath9k: Unable to create debugfs root: %d\n", - error); - goto err_rate_unregister; - } - - error = ath_pci_init(); - if (error < 0) { - printk(KERN_ERR - "ath9k: No PCI devices found, driver not installed.\n"); - error = -ENODEV; - goto err_remove_root; - } - - error = ath_ahb_init(); - if (error < 0) { - error = -ENODEV; - goto err_pci_exit; - } - - return 0; - - err_pci_exit: - ath_pci_exit(); - - err_remove_root: - ath9k_debug_remove_root(); - err_rate_unregister: - ath_rate_control_unregister(); - err_out: - return error; -} -module_init(ath9k_init); - -static void __exit ath9k_exit(void) -{ - ath_ahb_exit(); - ath_pci_exit(); - ath9k_debug_remove_root(); - ath_rate_control_unregister(); - printk(KERN_INFO "%s: Driver unloaded\n", dev_info); -} -module_exit(ath9k_exit); |