2438 lines
59 KiB
C
2438 lines
59 KiB
C
/*
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* Copyright (c) 2008-2011 Atheros Communications Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <linux/nl80211.h>
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#include <linux/delay.h>
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#include "ath9k.h"
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#include "btcoex.h"
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static u8 parse_mpdudensity(u8 mpdudensity)
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{
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/*
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* 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
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* 0 for no restriction
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* 1 for 1/4 us
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* 2 for 1/2 us
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* 3 for 1 us
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* 4 for 2 us
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* 5 for 4 us
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* 6 for 8 us
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* 7 for 16 us
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*/
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switch (mpdudensity) {
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case 0:
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return 0;
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case 1:
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case 2:
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case 3:
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/* Our lower layer calculations limit our precision to
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1 microsecond */
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return 1;
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case 4:
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return 2;
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case 5:
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return 4;
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case 6:
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return 8;
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case 7:
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return 16;
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default:
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return 0;
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}
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}
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static bool ath9k_has_pending_frames(struct ath_softc *sc, struct ath_txq *txq)
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{
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bool pending = false;
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spin_lock_bh(&txq->axq_lock);
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if (txq->axq_depth || !list_empty(&txq->axq_acq))
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pending = true;
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spin_unlock_bh(&txq->axq_lock);
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return pending;
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}
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static bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode)
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{
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unsigned long flags;
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bool ret;
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spin_lock_irqsave(&sc->sc_pm_lock, flags);
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ret = ath9k_hw_setpower(sc->sc_ah, mode);
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spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
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return ret;
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}
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void ath9k_ps_wakeup(struct ath_softc *sc)
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{
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struct ath_common *common = ath9k_hw_common(sc->sc_ah);
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unsigned long flags;
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enum ath9k_power_mode power_mode;
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spin_lock_irqsave(&sc->sc_pm_lock, flags);
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if (++sc->ps_usecount != 1)
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goto unlock;
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power_mode = sc->sc_ah->power_mode;
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ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
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/*
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* While the hardware is asleep, the cycle counters contain no
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* useful data. Better clear them now so that they don't mess up
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* survey data results.
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*/
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if (power_mode != ATH9K_PM_AWAKE) {
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spin_lock(&common->cc_lock);
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ath_hw_cycle_counters_update(common);
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memset(&common->cc_survey, 0, sizeof(common->cc_survey));
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spin_unlock(&common->cc_lock);
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}
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unlock:
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spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
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}
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void ath9k_ps_restore(struct ath_softc *sc)
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{
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struct ath_common *common = ath9k_hw_common(sc->sc_ah);
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enum ath9k_power_mode mode;
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unsigned long flags;
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spin_lock_irqsave(&sc->sc_pm_lock, flags);
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if (--sc->ps_usecount != 0)
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goto unlock;
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if (sc->ps_flags & PS_WAIT_FOR_TX_ACK)
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goto unlock;
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if (sc->ps_idle)
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mode = ATH9K_PM_FULL_SLEEP;
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else if (sc->ps_enabled &&
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!(sc->ps_flags & (PS_WAIT_FOR_BEACON |
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PS_WAIT_FOR_CAB |
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PS_WAIT_FOR_PSPOLL_DATA)))
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mode = ATH9K_PM_NETWORK_SLEEP;
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else
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goto unlock;
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spin_lock(&common->cc_lock);
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ath_hw_cycle_counters_update(common);
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spin_unlock(&common->cc_lock);
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ath9k_hw_setpower(sc->sc_ah, mode);
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unlock:
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spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
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}
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void ath_start_ani(struct ath_common *common)
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{
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struct ath_hw *ah = common->ah;
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unsigned long timestamp = jiffies_to_msecs(jiffies);
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struct ath_softc *sc = (struct ath_softc *) common->priv;
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if (!(sc->sc_flags & SC_OP_ANI_RUN))
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return;
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if (sc->sc_flags & SC_OP_OFFCHANNEL)
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return;
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common->ani.longcal_timer = timestamp;
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common->ani.shortcal_timer = timestamp;
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common->ani.checkani_timer = timestamp;
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mod_timer(&common->ani.timer,
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jiffies +
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msecs_to_jiffies((u32)ah->config.ani_poll_interval));
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}
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static void ath_update_survey_nf(struct ath_softc *sc, int channel)
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{
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struct ath_hw *ah = sc->sc_ah;
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struct ath9k_channel *chan = &ah->channels[channel];
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struct survey_info *survey = &sc->survey[channel];
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if (chan->noisefloor) {
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survey->filled |= SURVEY_INFO_NOISE_DBM;
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survey->noise = ath9k_hw_getchan_noise(ah, chan);
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}
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}
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/*
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* Updates the survey statistics and returns the busy time since last
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* update in %, if the measurement duration was long enough for the
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* result to be useful, -1 otherwise.
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*/
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static int ath_update_survey_stats(struct ath_softc *sc)
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{
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struct ath_hw *ah = sc->sc_ah;
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struct ath_common *common = ath9k_hw_common(ah);
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int pos = ah->curchan - &ah->channels[0];
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struct survey_info *survey = &sc->survey[pos];
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struct ath_cycle_counters *cc = &common->cc_survey;
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unsigned int div = common->clockrate * 1000;
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int ret = 0;
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if (!ah->curchan)
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return -1;
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if (ah->power_mode == ATH9K_PM_AWAKE)
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ath_hw_cycle_counters_update(common);
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if (cc->cycles > 0) {
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survey->filled |= SURVEY_INFO_CHANNEL_TIME |
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SURVEY_INFO_CHANNEL_TIME_BUSY |
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SURVEY_INFO_CHANNEL_TIME_RX |
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SURVEY_INFO_CHANNEL_TIME_TX;
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survey->channel_time += cc->cycles / div;
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survey->channel_time_busy += cc->rx_busy / div;
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survey->channel_time_rx += cc->rx_frame / div;
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survey->channel_time_tx += cc->tx_frame / div;
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}
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if (cc->cycles < div)
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return -1;
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if (cc->cycles > 0)
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ret = cc->rx_busy * 100 / cc->cycles;
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memset(cc, 0, sizeof(*cc));
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ath_update_survey_nf(sc, pos);
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return ret;
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}
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static void __ath_cancel_work(struct ath_softc *sc)
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{
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cancel_work_sync(&sc->paprd_work);
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cancel_work_sync(&sc->hw_check_work);
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cancel_delayed_work_sync(&sc->tx_complete_work);
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cancel_delayed_work_sync(&sc->hw_pll_work);
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}
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static void ath_cancel_work(struct ath_softc *sc)
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{
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__ath_cancel_work(sc);
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cancel_work_sync(&sc->hw_reset_work);
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}
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static bool ath_prepare_reset(struct ath_softc *sc, bool retry_tx, bool flush)
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{
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struct ath_hw *ah = sc->sc_ah;
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struct ath_common *common = ath9k_hw_common(ah);
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bool ret;
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ieee80211_stop_queues(sc->hw);
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sc->hw_busy_count = 0;
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del_timer_sync(&common->ani.timer);
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del_timer_sync(&sc->rx_poll_timer);
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ath9k_debug_samp_bb_mac(sc);
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ath9k_hw_disable_interrupts(ah);
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ret = ath_drain_all_txq(sc, retry_tx);
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if (!ath_stoprecv(sc))
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ret = false;
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if (!flush) {
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if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
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ath_rx_tasklet(sc, 1, true);
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ath_rx_tasklet(sc, 1, false);
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} else {
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ath_flushrecv(sc);
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}
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return ret;
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}
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static bool ath_complete_reset(struct ath_softc *sc, bool start)
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{
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struct ath_hw *ah = sc->sc_ah;
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struct ath_common *common = ath9k_hw_common(ah);
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if (ath_startrecv(sc) != 0) {
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ath_err(common, "Unable to restart recv logic\n");
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return false;
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}
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ath9k_cmn_update_txpow(ah, sc->curtxpow,
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sc->config.txpowlimit, &sc->curtxpow);
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ath9k_hw_set_interrupts(ah);
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ath9k_hw_enable_interrupts(ah);
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if (!(sc->sc_flags & (SC_OP_OFFCHANNEL)) && start) {
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if (sc->sc_flags & SC_OP_BEACONS)
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ath_set_beacon(sc);
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ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
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ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/2);
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ath_start_rx_poll(sc, 3);
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if (!common->disable_ani)
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ath_start_ani(common);
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}
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if ((ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) && sc->ant_rx != 3) {
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struct ath_hw_antcomb_conf div_ant_conf;
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u8 lna_conf;
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ath9k_hw_antdiv_comb_conf_get(ah, &div_ant_conf);
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if (sc->ant_rx == 1)
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lna_conf = ATH_ANT_DIV_COMB_LNA1;
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else
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lna_conf = ATH_ANT_DIV_COMB_LNA2;
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div_ant_conf.main_lna_conf = lna_conf;
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div_ant_conf.alt_lna_conf = lna_conf;
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ath9k_hw_antdiv_comb_conf_set(ah, &div_ant_conf);
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}
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ieee80211_wake_queues(sc->hw);
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return true;
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}
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static int ath_reset_internal(struct ath_softc *sc, struct ath9k_channel *hchan,
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bool retry_tx)
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{
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struct ath_hw *ah = sc->sc_ah;
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struct ath_common *common = ath9k_hw_common(ah);
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struct ath9k_hw_cal_data *caldata = NULL;
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bool fastcc = true;
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bool flush = false;
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int r;
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__ath_cancel_work(sc);
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spin_lock_bh(&sc->sc_pcu_lock);
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if (!(sc->sc_flags & SC_OP_OFFCHANNEL)) {
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fastcc = false;
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caldata = &sc->caldata;
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}
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if (!hchan) {
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fastcc = false;
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flush = true;
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hchan = ah->curchan;
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}
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if (!ath_prepare_reset(sc, retry_tx, flush))
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fastcc = false;
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ath_dbg(common, CONFIG, "Reset to %u MHz, HT40: %d fastcc: %d\n",
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hchan->channel, IS_CHAN_HT40(hchan), fastcc);
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r = ath9k_hw_reset(ah, hchan, caldata, fastcc);
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if (r) {
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ath_err(common,
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"Unable to reset channel, reset status %d\n", r);
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goto out;
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}
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if (!ath_complete_reset(sc, true))
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r = -EIO;
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out:
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spin_unlock_bh(&sc->sc_pcu_lock);
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return r;
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}
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/*
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* Set/change channels. If the channel is really being changed, it's done
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* by reseting the chip. To accomplish this we must first cleanup any pending
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* DMA, then restart stuff.
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*/
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static int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
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struct ath9k_channel *hchan)
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{
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int r;
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if (sc->sc_flags & SC_OP_INVALID)
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return -EIO;
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r = ath_reset_internal(sc, hchan, false);
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return r;
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}
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static void ath_paprd_activate(struct ath_softc *sc)
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{
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struct ath_hw *ah = sc->sc_ah;
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struct ath9k_hw_cal_data *caldata = ah->caldata;
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int chain;
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if (!caldata || !caldata->paprd_done)
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return;
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ath9k_ps_wakeup(sc);
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ar9003_paprd_enable(ah, false);
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for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
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if (!(ah->txchainmask & BIT(chain)))
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continue;
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ar9003_paprd_populate_single_table(ah, caldata, chain);
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}
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ar9003_paprd_enable(ah, true);
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ath9k_ps_restore(sc);
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}
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static bool ath_paprd_send_frame(struct ath_softc *sc, struct sk_buff *skb, int chain)
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{
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struct ieee80211_hw *hw = sc->hw;
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struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
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struct ath_hw *ah = sc->sc_ah;
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struct ath_common *common = ath9k_hw_common(ah);
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struct ath_tx_control txctl;
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int time_left;
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memset(&txctl, 0, sizeof(txctl));
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txctl.txq = sc->tx.txq_map[WME_AC_BE];
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memset(tx_info, 0, sizeof(*tx_info));
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tx_info->band = hw->conf.channel->band;
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tx_info->flags |= IEEE80211_TX_CTL_NO_ACK;
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tx_info->control.rates[0].idx = 0;
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tx_info->control.rates[0].count = 1;
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tx_info->control.rates[0].flags = IEEE80211_TX_RC_MCS;
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tx_info->control.rates[1].idx = -1;
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|
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init_completion(&sc->paprd_complete);
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txctl.paprd = BIT(chain);
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|
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if (ath_tx_start(hw, skb, &txctl) != 0) {
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ath_dbg(common, CALIBRATE, "PAPRD TX failed\n");
|
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dev_kfree_skb_any(skb);
|
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return false;
|
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}
|
|
|
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time_left = wait_for_completion_timeout(&sc->paprd_complete,
|
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msecs_to_jiffies(ATH_PAPRD_TIMEOUT));
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|
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if (!time_left)
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ath_dbg(common, CALIBRATE,
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"Timeout waiting for paprd training on TX chain %d\n",
|
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chain);
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|
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return !!time_left;
|
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}
|
|
|
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void ath_paprd_calibrate(struct work_struct *work)
|
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{
|
|
struct ath_softc *sc = container_of(work, struct ath_softc, paprd_work);
|
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struct ieee80211_hw *hw = sc->hw;
|
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struct ath_hw *ah = sc->sc_ah;
|
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struct ieee80211_hdr *hdr;
|
|
struct sk_buff *skb = NULL;
|
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struct ath9k_hw_cal_data *caldata = ah->caldata;
|
|
struct ath_common *common = ath9k_hw_common(ah);
|
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int ftype;
|
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int chain_ok = 0;
|
|
int chain;
|
|
int len = 1800;
|
|
|
|
if (!caldata)
|
|
return;
|
|
|
|
ath9k_ps_wakeup(sc);
|
|
|
|
if (ar9003_paprd_init_table(ah) < 0)
|
|
goto fail_paprd;
|
|
|
|
skb = alloc_skb(len, GFP_KERNEL);
|
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if (!skb)
|
|
goto fail_paprd;
|
|
|
|
skb_put(skb, len);
|
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memset(skb->data, 0, len);
|
|
hdr = (struct ieee80211_hdr *)skb->data;
|
|
ftype = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC;
|
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hdr->frame_control = cpu_to_le16(ftype);
|
|
hdr->duration_id = cpu_to_le16(10);
|
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memcpy(hdr->addr1, hw->wiphy->perm_addr, ETH_ALEN);
|
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memcpy(hdr->addr2, hw->wiphy->perm_addr, ETH_ALEN);
|
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memcpy(hdr->addr3, hw->wiphy->perm_addr, ETH_ALEN);
|
|
|
|
for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
|
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if (!(ah->txchainmask & BIT(chain)))
|
|
continue;
|
|
|
|
chain_ok = 0;
|
|
|
|
ath_dbg(common, CALIBRATE,
|
|
"Sending PAPRD frame for thermal measurement on chain %d\n",
|
|
chain);
|
|
if (!ath_paprd_send_frame(sc, skb, chain))
|
|
goto fail_paprd;
|
|
|
|
ar9003_paprd_setup_gain_table(ah, chain);
|
|
|
|
ath_dbg(common, CALIBRATE,
|
|
"Sending PAPRD training frame on chain %d\n", chain);
|
|
if (!ath_paprd_send_frame(sc, skb, chain))
|
|
goto fail_paprd;
|
|
|
|
if (!ar9003_paprd_is_done(ah)) {
|
|
ath_dbg(common, CALIBRATE,
|
|
"PAPRD not yet done on chain %d\n", chain);
|
|
break;
|
|
}
|
|
|
|
if (ar9003_paprd_create_curve(ah, caldata, chain)) {
|
|
ath_dbg(common, CALIBRATE,
|
|
"PAPRD create curve failed on chain %d\n",
|
|
chain);
|
|
break;
|
|
}
|
|
|
|
chain_ok = 1;
|
|
}
|
|
kfree_skb(skb);
|
|
|
|
if (chain_ok) {
|
|
caldata->paprd_done = true;
|
|
ath_paprd_activate(sc);
|
|
}
|
|
|
|
fail_paprd:
|
|
ath9k_ps_restore(sc);
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
void ath_ani_calibrate(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);
|
|
bool longcal = false;
|
|
bool shortcal = false;
|
|
bool aniflag = false;
|
|
unsigned int timestamp = jiffies_to_msecs(jiffies);
|
|
u32 cal_interval, short_cal_interval, long_cal_interval;
|
|
unsigned long flags;
|
|
|
|
if (ah->caldata && ah->caldata->nfcal_interference)
|
|
long_cal_interval = ATH_LONG_CALINTERVAL_INT;
|
|
else
|
|
long_cal_interval = ATH_LONG_CALINTERVAL;
|
|
|
|
short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ?
|
|
ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL;
|
|
|
|
/* Only calibrate if awake */
|
|
if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE)
|
|
goto set_timer;
|
|
|
|
ath9k_ps_wakeup(sc);
|
|
|
|
/* Long calibration runs independently of short calibration. */
|
|
if ((timestamp - common->ani.longcal_timer) >= long_cal_interval) {
|
|
longcal = true;
|
|
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;
|
|
common->ani.shortcal_timer = timestamp;
|
|
common->ani.resetcal_timer = timestamp;
|
|
}
|
|
} 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;
|
|
}
|
|
}
|
|
|
|
/* Verify whether we must check ANI */
|
|
if (sc->sc_ah->config.enable_ani
|
|
&& (timestamp - common->ani.checkani_timer) >=
|
|
ah->config.ani_poll_interval) {
|
|
aniflag = true;
|
|
common->ani.checkani_timer = timestamp;
|
|
}
|
|
|
|
/* Call ANI routine if necessary */
|
|
if (aniflag) {
|
|
spin_lock_irqsave(&common->cc_lock, flags);
|
|
ath9k_hw_ani_monitor(ah, ah->curchan);
|
|
ath_update_survey_stats(sc);
|
|
spin_unlock_irqrestore(&common->cc_lock, flags);
|
|
}
|
|
|
|
/* Perform calibration if necessary */
|
|
if (longcal || shortcal) {
|
|
common->ani.caldone =
|
|
ath9k_hw_calibrate(ah, ah->curchan,
|
|
ah->rxchainmask, longcal);
|
|
}
|
|
|
|
ath_dbg(common, ANI,
|
|
"Calibration @%lu finished: %s %s %s, caldone: %s\n",
|
|
jiffies,
|
|
longcal ? "long" : "", shortcal ? "short" : "",
|
|
aniflag ? "ani" : "", common->ani.caldone ? "true" : "false");
|
|
|
|
ath9k_ps_restore(sc);
|
|
|
|
set_timer:
|
|
/*
|
|
* Set timer interval based on previous results.
|
|
* The interval must be the shortest necessary to satisfy ANI,
|
|
* short calibration and long calibration.
|
|
*/
|
|
ath9k_debug_samp_bb_mac(sc);
|
|
cal_interval = ATH_LONG_CALINTERVAL;
|
|
if (sc->sc_ah->config.enable_ani)
|
|
cal_interval = min(cal_interval,
|
|
(u32)ah->config.ani_poll_interval);
|
|
if (!common->ani.caldone)
|
|
cal_interval = min(cal_interval, (u32)short_cal_interval);
|
|
|
|
mod_timer(&common->ani.timer, jiffies + msecs_to_jiffies(cal_interval));
|
|
if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) && ah->caldata) {
|
|
if (!ah->caldata->paprd_done)
|
|
ieee80211_queue_work(sc->hw, &sc->paprd_work);
|
|
else if (!ah->paprd_table_write_done)
|
|
ath_paprd_activate(sc);
|
|
}
|
|
}
|
|
|
|
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;
|
|
|
|
#ifdef CONFIG_ATH9K_DEBUGFS
|
|
spin_lock(&sc->nodes_lock);
|
|
list_add(&an->list, &sc->nodes);
|
|
spin_unlock(&sc->nodes_lock);
|
|
#endif
|
|
an->sta = sta;
|
|
an->vif = vif;
|
|
|
|
if (sta->ht_cap.ht_supported) {
|
|
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);
|
|
}
|
|
}
|
|
|
|
static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
|
|
{
|
|
struct ath_node *an = (struct ath_node *)sta->drv_priv;
|
|
|
|
#ifdef CONFIG_ATH9K_DEBUGFS
|
|
spin_lock(&sc->nodes_lock);
|
|
list_del(&an->list);
|
|
spin_unlock(&sc->nodes_lock);
|
|
an->sta = NULL;
|
|
#endif
|
|
|
|
if (sta->ht_cap.ht_supported)
|
|
ath_tx_node_cleanup(sc, an);
|
|
}
|
|
|
|
|
|
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);
|
|
|
|
u32 status = sc->intrstatus;
|
|
u32 rxmask;
|
|
|
|
ath9k_ps_wakeup(sc);
|
|
spin_lock(&sc->sc_pcu_lock);
|
|
|
|
if ((status & ATH9K_INT_FATAL) ||
|
|
(status & ATH9K_INT_BB_WATCHDOG)) {
|
|
#ifdef CONFIG_ATH9K_DEBUGFS
|
|
enum ath_reset_type type;
|
|
|
|
if (status & ATH9K_INT_FATAL)
|
|
type = RESET_TYPE_FATAL_INT;
|
|
else
|
|
type = RESET_TYPE_BB_WATCHDOG;
|
|
|
|
RESET_STAT_INC(sc, type);
|
|
#endif
|
|
ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Only run the baseband hang check if beacons stop working in AP or
|
|
* IBSS mode, because it has a high false positive rate. For station
|
|
* mode it should not be necessary, since the upper layers will detect
|
|
* this through a beacon miss automatically and the following channel
|
|
* change will trigger a hardware reset anyway
|
|
*/
|
|
if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0 &&
|
|
!ath9k_hw_check_alive(ah))
|
|
ieee80211_queue_work(sc->hw, &sc->hw_check_work);
|
|
|
|
if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
|
|
/*
|
|
* TSF sync does not look correct; remain awake to sync with
|
|
* the next Beacon.
|
|
*/
|
|
ath_dbg(common, PS, "TSFOOR - Sync with next Beacon\n");
|
|
sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC;
|
|
}
|
|
|
|
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 (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)
|
|
ath_tx_edma_tasklet(sc);
|
|
else
|
|
ath_tx_tasklet(sc);
|
|
}
|
|
|
|
ath9k_btcoex_handle_interrupt(sc, status);
|
|
|
|
out:
|
|
/* re-enable hardware interrupt */
|
|
ath9k_hw_enable_interrupts(ah);
|
|
|
|
spin_unlock(&sc->sc_pcu_lock);
|
|
ath9k_ps_restore(sc);
|
|
}
|
|
|
|
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_TSFOOR | \
|
|
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;
|
|
bool sched = false;
|
|
|
|
/*
|
|
* The hardware is not ready/present, don't
|
|
* touch anything. Note this can happen early
|
|
* on if the IRQ is shared.
|
|
*/
|
|
if (sc->sc_flags & SC_OP_INVALID)
|
|
return IRQ_NONE;
|
|
|
|
|
|
/* shared irq, not for us */
|
|
|
|
if (!ath9k_hw_intrpend(ah))
|
|
return IRQ_NONE;
|
|
|
|
/*
|
|
* 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 &= ah->imask; /* discard unasked-for bits */
|
|
|
|
/*
|
|
* If there are no status bits set, then this interrupt was not
|
|
* for me (should have been caught above).
|
|
*/
|
|
if (!status)
|
|
return IRQ_NONE;
|
|
|
|
/* Cache the status */
|
|
sc->intrstatus = status;
|
|
|
|
if (status & SCHED_INTR)
|
|
sched = true;
|
|
|
|
/*
|
|
* If a FATAL or RXORN interrupt is received, we have to reset the
|
|
* chip immediately.
|
|
*/
|
|
if ((status & ATH9K_INT_FATAL) || ((status & ATH9K_INT_RXORN) &&
|
|
!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)))
|
|
goto chip_reset;
|
|
|
|
if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
|
|
(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);
|
|
|
|
goto chip_reset;
|
|
}
|
|
|
|
if (status & ATH9K_INT_SWBA)
|
|
tasklet_schedule(&sc->bcon_tasklet);
|
|
|
|
if (status & ATH9K_INT_TXURN)
|
|
ath9k_hw_updatetxtriglevel(ah, true);
|
|
|
|
if (status & ATH9K_INT_RXEOL) {
|
|
ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
|
|
ath9k_hw_set_interrupts(ah);
|
|
}
|
|
|
|
if (status & ATH9K_INT_MIB) {
|
|
/*
|
|
* Disable interrupts until we service the MIB
|
|
* interrupt; otherwise it will continue to
|
|
* fire.
|
|
*/
|
|
ath9k_hw_disable_interrupts(ah);
|
|
/*
|
|
* Let the hal handle the event. We assume
|
|
* it will clear whatever condition caused
|
|
* the interrupt.
|
|
*/
|
|
spin_lock(&common->cc_lock);
|
|
ath9k_hw_proc_mib_event(ah);
|
|
spin_unlock(&common->cc_lock);
|
|
ath9k_hw_enable_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);
|
|
ath9k_hw_setrxabort(sc->sc_ah, 0);
|
|
sc->ps_flags |= PS_WAIT_FOR_BEACON;
|
|
}
|
|
|
|
chip_reset:
|
|
|
|
ath_debug_stat_interrupt(sc, status);
|
|
|
|
if (sched) {
|
|
/* turn off every interrupt */
|
|
ath9k_hw_disable_interrupts(ah);
|
|
tasklet_schedule(&sc->intr_tq);
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
#undef SCHED_INTR
|
|
}
|
|
|
|
static int ath_reset(struct ath_softc *sc, bool retry_tx)
|
|
{
|
|
int r;
|
|
|
|
ath9k_ps_wakeup(sc);
|
|
|
|
r = ath_reset_internal(sc, NULL, retry_tx);
|
|
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
|
|
ath9k_ps_restore(sc);
|
|
|
|
return r;
|
|
}
|
|
|
|
void ath_reset_work(struct work_struct *work)
|
|
{
|
|
struct ath_softc *sc = container_of(work, struct ath_softc, hw_reset_work);
|
|
|
|
ath_reset(sc, true);
|
|
}
|
|
|
|
void ath_hw_check(struct work_struct *work)
|
|
{
|
|
struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
|
|
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
|
|
unsigned long flags;
|
|
int busy;
|
|
u8 is_alive, nbeacon = 1;
|
|
|
|
ath9k_ps_wakeup(sc);
|
|
is_alive = ath9k_hw_check_alive(sc->sc_ah);
|
|
|
|
if (is_alive && !AR_SREV_9300(sc->sc_ah))
|
|
goto out;
|
|
else if (!is_alive && AR_SREV_9300(sc->sc_ah)) {
|
|
ath_dbg(common, RESET,
|
|
"DCU stuck is detected. Schedule chip reset\n");
|
|
RESET_STAT_INC(sc, RESET_TYPE_MAC_HANG);
|
|
goto sched_reset;
|
|
}
|
|
|
|
spin_lock_irqsave(&common->cc_lock, flags);
|
|
busy = ath_update_survey_stats(sc);
|
|
spin_unlock_irqrestore(&common->cc_lock, flags);
|
|
|
|
ath_dbg(common, RESET, "Possible baseband hang, busy=%d (try %d)\n",
|
|
busy, sc->hw_busy_count + 1);
|
|
if (busy >= 99) {
|
|
if (++sc->hw_busy_count >= 3) {
|
|
RESET_STAT_INC(sc, RESET_TYPE_BB_HANG);
|
|
goto sched_reset;
|
|
}
|
|
} else if (busy >= 0) {
|
|
sc->hw_busy_count = 0;
|
|
nbeacon = 3;
|
|
}
|
|
|
|
ath_start_rx_poll(sc, nbeacon);
|
|
goto out;
|
|
|
|
sched_reset:
|
|
ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
|
|
out:
|
|
ath9k_ps_restore(sc);
|
|
}
|
|
|
|
static void ath_hw_pll_rx_hang_check(struct ath_softc *sc, u32 pll_sqsum)
|
|
{
|
|
static int count;
|
|
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
|
|
|
|
if (pll_sqsum >= 0x40000) {
|
|
count++;
|
|
if (count == 3) {
|
|
/* Rx is hung for more than 500ms. Reset it */
|
|
ath_dbg(common, RESET, "Possible RX hang, resetting\n");
|
|
RESET_STAT_INC(sc, RESET_TYPE_PLL_HANG);
|
|
ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
|
|
count = 0;
|
|
}
|
|
} else
|
|
count = 0;
|
|
}
|
|
|
|
void ath_hw_pll_work(struct work_struct *work)
|
|
{
|
|
struct ath_softc *sc = container_of(work, struct ath_softc,
|
|
hw_pll_work.work);
|
|
u32 pll_sqsum;
|
|
|
|
if (AR_SREV_9485(sc->sc_ah)) {
|
|
|
|
ath9k_ps_wakeup(sc);
|
|
pll_sqsum = ar9003_get_pll_sqsum_dvc(sc->sc_ah);
|
|
ath9k_ps_restore(sc);
|
|
|
|
ath_hw_pll_rx_hang_check(sc, pll_sqsum);
|
|
|
|
ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/5);
|
|
}
|
|
}
|
|
|
|
/**********************/
|
|
/* mac80211 callbacks */
|
|
/**********************/
|
|
|
|
static int ath9k_start(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 *curchan = hw->conf.channel;
|
|
struct ath9k_channel *init_channel;
|
|
int r;
|
|
|
|
ath_dbg(common, CONFIG,
|
|
"Starting driver with initial channel: %d MHz\n",
|
|
curchan->center_freq);
|
|
|
|
ath9k_ps_wakeup(sc);
|
|
mutex_lock(&sc->mutex);
|
|
|
|
init_channel = ath9k_cmn_get_curchannel(hw, ah);
|
|
|
|
/* Reset SERDES registers */
|
|
ath9k_hw_configpcipowersave(ah, false);
|
|
|
|
/*
|
|
* 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);
|
|
|
|
atomic_set(&ah->intr_ref_cnt, -1);
|
|
|
|
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);
|
|
spin_unlock_bh(&sc->sc_pcu_lock);
|
|
goto mutex_unlock;
|
|
}
|
|
|
|
/* Setup our intr mask. */
|
|
ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL |
|
|
ATH9K_INT_RXORN | ATH9K_INT_FATAL |
|
|
ATH9K_INT_GLOBAL;
|
|
|
|
if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
|
|
ah->imask |= ATH9K_INT_RXHP |
|
|
ATH9K_INT_RXLP |
|
|
ATH9K_INT_BB_WATCHDOG;
|
|
else
|
|
ah->imask |= ATH9K_INT_RX;
|
|
|
|
ah->imask |= ATH9K_INT_GTT;
|
|
|
|
if (ah->caps.hw_caps & ATH9K_HW_CAP_HT)
|
|
ah->imask |= ATH9K_INT_CST;
|
|
|
|
if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI)
|
|
ah->imask |= ATH9K_INT_MCI;
|
|
|
|
sc->sc_flags &= ~SC_OP_INVALID;
|
|
sc->sc_ah->is_monitoring = false;
|
|
|
|
if (!ath_complete_reset(sc, false)) {
|
|
r = -EIO;
|
|
spin_unlock_bh(&sc->sc_pcu_lock);
|
|
goto mutex_unlock;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
/*
|
|
* Reset key cache to sane defaults (all entries cleared) instead of
|
|
* semi-random values after suspend/resume.
|
|
*/
|
|
ath9k_cmn_init_crypto(sc->sc_ah);
|
|
|
|
spin_unlock_bh(&sc->sc_pcu_lock);
|
|
|
|
ath9k_start_btcoex(sc);
|
|
|
|
if (ah->caps.pcie_lcr_extsync_en && common->bus_ops->extn_synch_en)
|
|
common->bus_ops->extn_synch_en(common);
|
|
|
|
mutex_unlock:
|
|
mutex_unlock(&sc->mutex);
|
|
|
|
ath9k_ps_restore(sc);
|
|
|
|
return r;
|
|
}
|
|
|
|
static void ath9k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
|
|
{
|
|
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;
|
|
|
|
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_dbg(common, PS,
|
|
"Add PM=1 for a TX frame while in PS mode\n");
|
|
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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))
|
|
goto exit;
|
|
|
|
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);
|
|
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 {
|
|
ath_dbg(common, PS, "Wake up to complete TX\n");
|
|
sc->ps_flags |= PS_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));
|
|
txctl.txq = sc->tx.txq_map[skb_get_queue_mapping(skb)];
|
|
|
|
ath_dbg(common, XMIT, "transmitting packet, skb: %p\n", skb);
|
|
|
|
if (ath_tx_start(hw, skb, &txctl) != 0) {
|
|
ath_dbg(common, XMIT, "TX failed\n");
|
|
goto exit;
|
|
}
|
|
|
|
return;
|
|
exit:
|
|
dev_kfree_skb_any(skb);
|
|
}
|
|
|
|
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);
|
|
bool prev_idle;
|
|
|
|
mutex_lock(&sc->mutex);
|
|
|
|
ath_cancel_work(sc);
|
|
del_timer_sync(&sc->rx_poll_timer);
|
|
|
|
if (sc->sc_flags & SC_OP_INVALID) {
|
|
ath_dbg(common, ANY, "Device not present\n");
|
|
mutex_unlock(&sc->mutex);
|
|
return;
|
|
}
|
|
|
|
/* Ensure HW is awake when we try to shut it down. */
|
|
ath9k_ps_wakeup(sc);
|
|
|
|
ath9k_stop_btcoex(sc);
|
|
|
|
spin_lock_bh(&sc->sc_pcu_lock);
|
|
|
|
/* prevent tasklets to enable interrupts once we disable them */
|
|
ah->imask &= ~ATH9K_INT_GLOBAL;
|
|
|
|
/* make sure h/w will not generate any interrupt
|
|
* before setting the invalid flag. */
|
|
ath9k_hw_disable_interrupts(ah);
|
|
|
|
spin_unlock_bh(&sc->sc_pcu_lock);
|
|
|
|
/* 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);
|
|
|
|
prev_idle = sc->ps_idle;
|
|
sc->ps_idle = true;
|
|
|
|
spin_lock_bh(&sc->sc_pcu_lock);
|
|
|
|
if (ah->led_pin >= 0) {
|
|
ath9k_hw_set_gpio(ah, ah->led_pin, 1);
|
|
ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
|
|
}
|
|
|
|
ath_prepare_reset(sc, false, true);
|
|
|
|
if (sc->rx.frag) {
|
|
dev_kfree_skb_any(sc->rx.frag);
|
|
sc->rx.frag = NULL;
|
|
}
|
|
|
|
if (!ah->curchan)
|
|
ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
|
|
|
|
ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
|
|
ath9k_hw_phy_disable(ah);
|
|
|
|
ath9k_hw_configpcipowersave(ah, true);
|
|
|
|
spin_unlock_bh(&sc->sc_pcu_lock);
|
|
|
|
ath9k_ps_restore(sc);
|
|
|
|
sc->sc_flags |= SC_OP_INVALID;
|
|
sc->ps_idle = prev_idle;
|
|
|
|
mutex_unlock(&sc->mutex);
|
|
|
|
ath_dbg(common, CONFIG, "Driver halt\n");
|
|
}
|
|
|
|
bool ath9k_uses_beacons(int type)
|
|
{
|
|
switch (type) {
|
|
case NL80211_IFTYPE_AP:
|
|
case NL80211_IFTYPE_ADHOC:
|
|
case NL80211_IFTYPE_MESH_POINT:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static void ath9k_reclaim_beacon(struct ath_softc *sc,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
struct ath_vif *avp = (void *)vif->drv_priv;
|
|
|
|
ath9k_set_beaconing_status(sc, false);
|
|
ath_beacon_return(sc, avp);
|
|
ath9k_set_beaconing_status(sc, true);
|
|
sc->sc_flags &= ~SC_OP_BEACONS;
|
|
}
|
|
|
|
static void ath9k_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
|
|
{
|
|
struct ath9k_vif_iter_data *iter_data = data;
|
|
int i;
|
|
|
|
if (iter_data->hw_macaddr)
|
|
for (i = 0; i < ETH_ALEN; i++)
|
|
iter_data->mask[i] &=
|
|
~(iter_data->hw_macaddr[i] ^ mac[i]);
|
|
|
|
switch (vif->type) {
|
|
case NL80211_IFTYPE_AP:
|
|
iter_data->naps++;
|
|
break;
|
|
case NL80211_IFTYPE_STATION:
|
|
iter_data->nstations++;
|
|
break;
|
|
case NL80211_IFTYPE_ADHOC:
|
|
iter_data->nadhocs++;
|
|
break;
|
|
case NL80211_IFTYPE_MESH_POINT:
|
|
iter_data->nmeshes++;
|
|
break;
|
|
case NL80211_IFTYPE_WDS:
|
|
iter_data->nwds++;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* 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_softc *sc = hw->priv;
|
|
struct ath_hw *ah = sc->sc_ah;
|
|
struct ath_common *common = ath9k_hw_common(ah);
|
|
|
|
/*
|
|
* Use the hardware MAC address as reference, the hardware uses it
|
|
* together with the BSSID mask when matching addresses.
|
|
*/
|
|
memset(iter_data, 0, sizeof(*iter_data));
|
|
iter_data->hw_macaddr = common->macaddr;
|
|
memset(&iter_data->mask, 0xff, ETH_ALEN);
|
|
|
|
if (vif)
|
|
ath9k_vif_iter(iter_data, vif->addr, vif);
|
|
|
|
/* Get list of all active MAC addresses */
|
|
ieee80211_iterate_active_interfaces_atomic(sc->hw, ath9k_vif_iter,
|
|
iter_data);
|
|
}
|
|
|
|
/* Called with sc->mutex held. */
|
|
static void ath9k_calculate_summary_state(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 ath9k_vif_iter_data iter_data;
|
|
|
|
ath9k_calculate_iter_data(hw, vif, &iter_data);
|
|
|
|
/* Set BSSID mask. */
|
|
memcpy(common->bssidmask, iter_data.mask, ETH_ALEN);
|
|
ath_hw_setbssidmask(common);
|
|
|
|
/* Set op-mode & TSF */
|
|
if (iter_data.naps > 0) {
|
|
ath9k_hw_set_tsfadjust(ah, 1);
|
|
sc->sc_flags |= SC_OP_TSF_RESET;
|
|
ah->opmode = NL80211_IFTYPE_AP;
|
|
} else {
|
|
ath9k_hw_set_tsfadjust(ah, 0);
|
|
sc->sc_flags &= ~SC_OP_TSF_RESET;
|
|
|
|
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;
|
|
}
|
|
|
|
/*
|
|
* Enable MIB interrupts when there are hardware phy counters.
|
|
*/
|
|
if ((iter_data.nstations + iter_data.nadhocs + iter_data.nmeshes) > 0) {
|
|
if (ah->config.enable_ani)
|
|
ah->imask |= ATH9K_INT_MIB;
|
|
ah->imask |= ATH9K_INT_TSFOOR;
|
|
} else {
|
|
ah->imask &= ~ATH9K_INT_MIB;
|
|
ah->imask &= ~ATH9K_INT_TSFOOR;
|
|
}
|
|
|
|
ath9k_hw_set_interrupts(ah);
|
|
|
|
/* Set up ANI */
|
|
if (iter_data.naps > 0) {
|
|
sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
|
|
|
|
if (!common->disable_ani) {
|
|
sc->sc_flags |= SC_OP_ANI_RUN;
|
|
ath_start_ani(common);
|
|
}
|
|
|
|
} else {
|
|
sc->sc_flags &= ~SC_OP_ANI_RUN;
|
|
del_timer_sync(&common->ani.timer);
|
|
}
|
|
}
|
|
|
|
/* Called with sc->mutex held, vif counts set up properly. */
|
|
static void ath9k_do_vif_add_setup(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
struct ath_softc *sc = hw->priv;
|
|
|
|
ath9k_calculate_summary_state(hw, vif);
|
|
|
|
if (ath9k_uses_beacons(vif->type)) {
|
|
int error;
|
|
/* This may fail because upper levels do not have beacons
|
|
* properly configured yet. That's OK, we assume it
|
|
* will be properly configured and then we will be notified
|
|
* in the info_changed method and set up beacons properly
|
|
* there.
|
|
*/
|
|
ath9k_set_beaconing_status(sc, false);
|
|
error = ath_beacon_alloc(sc, vif);
|
|
if (!error)
|
|
ath_beacon_config(sc, vif);
|
|
ath9k_set_beaconing_status(sc, true);
|
|
}
|
|
}
|
|
|
|
void ath_start_rx_poll(struct ath_softc *sc, u8 nbeacon)
|
|
{
|
|
if (!AR_SREV_9300(sc->sc_ah))
|
|
return;
|
|
|
|
if (!(sc->sc_flags & SC_OP_PRIM_STA_VIF))
|
|
return;
|
|
|
|
mod_timer(&sc->rx_poll_timer, jiffies + msecs_to_jiffies
|
|
(nbeacon * sc->cur_beacon_conf.beacon_interval));
|
|
}
|
|
|
|
void ath_rx_poll(unsigned long data)
|
|
{
|
|
struct ath_softc *sc = (struct ath_softc *)data;
|
|
|
|
ieee80211_queue_work(sc->hw, &sc->hw_check_work);
|
|
}
|
|
|
|
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);
|
|
int ret = 0;
|
|
|
|
ath9k_ps_wakeup(sc);
|
|
mutex_lock(&sc->mutex);
|
|
|
|
switch (vif->type) {
|
|
case NL80211_IFTYPE_STATION:
|
|
case NL80211_IFTYPE_WDS:
|
|
case NL80211_IFTYPE_ADHOC:
|
|
case NL80211_IFTYPE_AP:
|
|
case NL80211_IFTYPE_MESH_POINT:
|
|
break;
|
|
default:
|
|
ath_err(common, "Interface type %d not yet supported\n",
|
|
vif->type);
|
|
ret = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (ath9k_uses_beacons(vif->type)) {
|
|
if (sc->nbcnvifs >= ATH_BCBUF) {
|
|
ath_err(common, "Not enough beacon buffers when adding"
|
|
" new interface of type: %i\n",
|
|
vif->type);
|
|
ret = -ENOBUFS;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if ((ah->opmode == NL80211_IFTYPE_ADHOC) ||
|
|
((vif->type == NL80211_IFTYPE_ADHOC) &&
|
|
sc->nvifs > 0)) {
|
|
ath_err(common, "Cannot create ADHOC interface when other"
|
|
" interfaces already exist.\n");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
ath_dbg(common, CONFIG, "Attach a VIF of type: %d\n", vif->type);
|
|
|
|
sc->nvifs++;
|
|
|
|
ath9k_do_vif_add_setup(hw, vif);
|
|
out:
|
|
mutex_unlock(&sc->mutex);
|
|
ath9k_ps_restore(sc);
|
|
return ret;
|
|
}
|
|
|
|
static int ath9k_change_interface(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
enum nl80211_iftype new_type,
|
|
bool p2p)
|
|
{
|
|
struct ath_softc *sc = hw->priv;
|
|
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
|
|
int ret = 0;
|
|
|
|
ath_dbg(common, CONFIG, "Change Interface\n");
|
|
mutex_lock(&sc->mutex);
|
|
ath9k_ps_wakeup(sc);
|
|
|
|
/* See if new interface type is valid. */
|
|
if ((new_type == NL80211_IFTYPE_ADHOC) &&
|
|
(sc->nvifs > 1)) {
|
|
ath_err(common, "When using ADHOC, it must be the only"
|
|
" interface.\n");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (ath9k_uses_beacons(new_type) &&
|
|
!ath9k_uses_beacons(vif->type)) {
|
|
if (sc->nbcnvifs >= ATH_BCBUF) {
|
|
ath_err(common, "No beacon slot available\n");
|
|
ret = -ENOBUFS;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
/* Clean up old vif stuff */
|
|
if (ath9k_uses_beacons(vif->type))
|
|
ath9k_reclaim_beacon(sc, vif);
|
|
|
|
/* Add new settings */
|
|
vif->type = new_type;
|
|
vif->p2p = p2p;
|
|
|
|
ath9k_do_vif_add_setup(hw, vif);
|
|
out:
|
|
ath9k_ps_restore(sc);
|
|
mutex_unlock(&sc->mutex);
|
|
return ret;
|
|
}
|
|
|
|
static void ath9k_remove_interface(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
struct ath_softc *sc = hw->priv;
|
|
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
|
|
|
|
ath_dbg(common, CONFIG, "Detach Interface\n");
|
|
|
|
ath9k_ps_wakeup(sc);
|
|
mutex_lock(&sc->mutex);
|
|
|
|
sc->nvifs--;
|
|
|
|
/* Reclaim beacon resources */
|
|
if (ath9k_uses_beacons(vif->type))
|
|
ath9k_reclaim_beacon(sc, vif);
|
|
|
|
ath9k_calculate_summary_state(hw, NULL);
|
|
|
|
mutex_unlock(&sc->mutex);
|
|
ath9k_ps_restore(sc);
|
|
}
|
|
|
|
static void ath9k_enable_ps(struct ath_softc *sc)
|
|
{
|
|
struct ath_hw *ah = sc->sc_ah;
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
static void ath9k_disable_ps(struct ath_softc *sc)
|
|
{
|
|
struct ath_hw *ah = sc->sc_ah;
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
|
|
{
|
|
struct ath_softc *sc = hw->priv;
|
|
struct ath_hw *ah = sc->sc_ah;
|
|
struct ath_common *common = ath9k_hw_common(ah);
|
|
struct ieee80211_conf *conf = &hw->conf;
|
|
|
|
ath9k_ps_wakeup(sc);
|
|
mutex_lock(&sc->mutex);
|
|
|
|
if (changed & IEEE80211_CONF_CHANGE_IDLE) {
|
|
sc->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE);
|
|
if (sc->ps_idle)
|
|
ath_cancel_work(sc);
|
|
}
|
|
|
|
/*
|
|
* We just prepare to enable PS. We have to wait until our AP has
|
|
* ACK'd our null data frame to disable RX otherwise we'll ignore
|
|
* those ACKs and end up retransmitting the same null data frames.
|
|
* IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
|
|
*/
|
|
if (changed & IEEE80211_CONF_CHANGE_PS) {
|
|
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_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;
|
|
}
|
|
}
|
|
|
|
if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
|
|
struct ieee80211_channel *curchan = hw->conf.channel;
|
|
int pos = curchan->hw_value;
|
|
int old_pos = -1;
|
|
unsigned long flags;
|
|
|
|
if (ah->curchan)
|
|
old_pos = ah->curchan - &ah->channels[0];
|
|
|
|
if (hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
|
|
sc->sc_flags |= SC_OP_OFFCHANNEL;
|
|
else
|
|
sc->sc_flags &= ~SC_OP_OFFCHANNEL;
|
|
|
|
ath_dbg(common, CONFIG, "Set channel: %d MHz type: %d\n",
|
|
curchan->center_freq, conf->channel_type);
|
|
|
|
/* update survey stats for the old channel before switching */
|
|
spin_lock_irqsave(&common->cc_lock, flags);
|
|
ath_update_survey_stats(sc);
|
|
spin_unlock_irqrestore(&common->cc_lock, flags);
|
|
|
|
/*
|
|
* Preserve the current channel values, before updating
|
|
* the same channel
|
|
*/
|
|
if (ah->curchan && (old_pos == pos))
|
|
ath9k_hw_getnf(ah, ah->curchan);
|
|
|
|
ath9k_cmn_update_ichannel(&sc->sc_ah->channels[pos],
|
|
curchan, conf->channel_type);
|
|
|
|
/*
|
|
* 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 (!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) &&
|
|
sc->cur_survey != &sc->survey[pos]) {
|
|
|
|
if (sc->cur_survey)
|
|
sc->cur_survey->filled &= ~SURVEY_INFO_IN_USE;
|
|
|
|
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));
|
|
}
|
|
|
|
if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
|
|
ath_err(common, "Unable to set channel\n");
|
|
mutex_unlock(&sc->mutex);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* 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);
|
|
}
|
|
|
|
if (changed & IEEE80211_CONF_CHANGE_POWER) {
|
|
ath_dbg(common, CONFIG, "Set power: %d\n", conf->power_level);
|
|
sc->config.txpowlimit = 2 * conf->power_level;
|
|
ath9k_cmn_update_txpow(ah, sc->curtxpow,
|
|
sc->config.txpowlimit, &sc->curtxpow);
|
|
}
|
|
|
|
mutex_unlock(&sc->mutex);
|
|
ath9k_ps_restore(sc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define SUPPORTED_FILTERS \
|
|
(FIF_PROMISC_IN_BSS | \
|
|
FIF_ALLMULTI | \
|
|
FIF_CONTROL | \
|
|
FIF_PSPOLL | \
|
|
FIF_OTHER_BSS | \
|
|
FIF_BCN_PRBRESP_PROMISC | \
|
|
FIF_PROBE_REQ | \
|
|
FIF_FCSFAIL)
|
|
|
|
/* FIXME: sc->sc_full_reset ? */
|
|
static void ath9k_configure_filter(struct ieee80211_hw *hw,
|
|
unsigned int changed_flags,
|
|
unsigned int *total_flags,
|
|
u64 multicast)
|
|
{
|
|
struct ath_softc *sc = hw->priv;
|
|
u32 rfilt;
|
|
|
|
changed_flags &= SUPPORTED_FILTERS;
|
|
*total_flags &= SUPPORTED_FILTERS;
|
|
|
|
sc->rx.rxfilter = *total_flags;
|
|
ath9k_ps_wakeup(sc);
|
|
rfilt = ath_calcrxfilter(sc);
|
|
ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
|
|
ath9k_ps_restore(sc);
|
|
|
|
ath_dbg(ath9k_hw_common(sc->sc_ah), CONFIG, "Set HW RX filter: 0x%x\n",
|
|
rfilt);
|
|
}
|
|
|
|
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 = { };
|
|
|
|
ath_node_attach(sc, sta, vif);
|
|
|
|
if (vif->type != NL80211_IFTYPE_AP &&
|
|
vif->type != NL80211_IFTYPE_AP_VLAN)
|
|
return 0;
|
|
|
|
an->ps_key = ath_key_config(common, vif, sta, &ps_key);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ath9k_del_ps_key(struct ath_softc *sc,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta)
|
|
{
|
|
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);
|
|
}
|
|
|
|
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_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;
|
|
|
|
if (!sta->ht_cap.ht_supported)
|
|
return;
|
|
|
|
switch (cmd) {
|
|
case STA_NOTIFY_SLEEP:
|
|
an->sleeping = true;
|
|
ath_tx_aggr_sleep(sta, sc, an);
|
|
break;
|
|
case STA_NOTIFY_AWAKE:
|
|
an->sleeping = false;
|
|
ath_tx_aggr_wakeup(sc, an);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int ath9k_conf_tx(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif, u16 queue,
|
|
const struct ieee80211_tx_queue_params *params)
|
|
{
|
|
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;
|
|
|
|
if (queue >= WME_NUM_AC)
|
|
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));
|
|
|
|
qi.tqi_aifs = params->aifs;
|
|
qi.tqi_cwmin = params->cw_min;
|
|
qi.tqi_cwmax = params->cw_max;
|
|
qi.tqi_burstTime = 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, txq->axq_qnum, &qi);
|
|
if (ret)
|
|
ath_err(common, "TXQ Update failed\n");
|
|
|
|
if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC)
|
|
if (queue == WME_AC_BE && !ret)
|
|
ath_beaconq_config(sc);
|
|
|
|
mutex_unlock(&sc->mutex);
|
|
ath9k_ps_restore(sc);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ath9k_set_key(struct ieee80211_hw *hw,
|
|
enum set_key_cmd cmd,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta,
|
|
struct ieee80211_key_conf *key)
|
|
{
|
|
struct ath_softc *sc = hw->priv;
|
|
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
|
|
int ret = 0;
|
|
|
|
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_dbg(common, CONFIG, "Set HW Key\n");
|
|
|
|
switch (cmd) {
|
|
case SET_KEY:
|
|
if (sta)
|
|
ath9k_del_ps_key(sc, vif, sta);
|
|
|
|
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->cipher == WLAN_CIPHER_SUITE_TKIP)
|
|
key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
|
|
if (sc->sc_ah->sw_mgmt_crypto &&
|
|
key->cipher == WLAN_CIPHER_SUITE_CCMP)
|
|
key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
|
|
ret = 0;
|
|
}
|
|
break;
|
|
case DISABLE_KEY:
|
|
ath_key_delete(common, key);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
ath9k_ps_restore(sc);
|
|
mutex_unlock(&sc->mutex);
|
|
|
|
return ret;
|
|
}
|
|
static void ath9k_bss_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
|
|
{
|
|
struct ath_softc *sc = data;
|
|
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
|
|
struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
|
|
struct ath_vif *avp = (void *)vif->drv_priv;
|
|
|
|
/*
|
|
* Skip iteration if primary station vif's bss info
|
|
* was not changed
|
|
*/
|
|
if (sc->sc_flags & SC_OP_PRIM_STA_VIF)
|
|
return;
|
|
|
|
if (bss_conf->assoc) {
|
|
sc->sc_flags |= SC_OP_PRIM_STA_VIF;
|
|
avp->primary_sta_vif = true;
|
|
memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
|
|
common->curaid = bss_conf->aid;
|
|
ath9k_hw_write_associd(sc->sc_ah);
|
|
ath_dbg(common, CONFIG, "Bss Info ASSOC %d, bssid: %pM\n",
|
|
bss_conf->aid, common->curbssid);
|
|
ath_beacon_config(sc, vif);
|
|
/*
|
|
* Request a re-configuration of Beacon related timers
|
|
* on the receipt of the first Beacon frame (i.e.,
|
|
* after time sync with the AP).
|
|
*/
|
|
sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON;
|
|
/* Reset rssi stats */
|
|
sc->last_rssi = ATH_RSSI_DUMMY_MARKER;
|
|
sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
|
|
|
|
ath_start_rx_poll(sc, 3);
|
|
|
|
if (!common->disable_ani) {
|
|
sc->sc_flags |= SC_OP_ANI_RUN;
|
|
ath_start_ani(common);
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
static void ath9k_config_bss(struct ath_softc *sc, struct ieee80211_vif *vif)
|
|
{
|
|
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
|
|
struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
|
|
struct ath_vif *avp = (void *)vif->drv_priv;
|
|
|
|
if (sc->sc_ah->opmode != NL80211_IFTYPE_STATION)
|
|
return;
|
|
|
|
/* Reconfigure bss info */
|
|
if (avp->primary_sta_vif && !bss_conf->assoc) {
|
|
ath_dbg(common, CONFIG, "Bss Info DISASSOC %d, bssid %pM\n",
|
|
common->curaid, common->curbssid);
|
|
sc->sc_flags &= ~(SC_OP_PRIM_STA_VIF | SC_OP_BEACONS);
|
|
avp->primary_sta_vif = false;
|
|
memset(common->curbssid, 0, ETH_ALEN);
|
|
common->curaid = 0;
|
|
}
|
|
|
|
ieee80211_iterate_active_interfaces_atomic(
|
|
sc->hw, ath9k_bss_iter, sc);
|
|
|
|
/*
|
|
* None of station vifs are associated.
|
|
* Clear bssid & aid
|
|
*/
|
|
if (!(sc->sc_flags & SC_OP_PRIM_STA_VIF)) {
|
|
ath9k_hw_write_associd(sc->sc_ah);
|
|
/* Stop ANI */
|
|
sc->sc_flags &= ~SC_OP_ANI_RUN;
|
|
del_timer_sync(&common->ani.timer);
|
|
del_timer_sync(&sc->rx_poll_timer);
|
|
memset(&sc->caldata, 0, sizeof(sc->caldata));
|
|
}
|
|
}
|
|
|
|
static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_bss_conf *bss_conf,
|
|
u32 changed)
|
|
{
|
|
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 slottime;
|
|
int error;
|
|
|
|
ath9k_ps_wakeup(sc);
|
|
mutex_lock(&sc->mutex);
|
|
|
|
if (changed & BSS_CHANGED_ASSOC) {
|
|
ath9k_config_bss(sc, vif);
|
|
|
|
ath_dbg(common, CONFIG, "BSSID: %pM aid: 0x%x\n",
|
|
common->curbssid, common->curaid);
|
|
}
|
|
|
|
if (changed & BSS_CHANGED_IBSS) {
|
|
/* There can be only one vif available */
|
|
memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
|
|
common->curaid = bss_conf->aid;
|
|
ath9k_hw_write_associd(sc->sc_ah);
|
|
|
|
if (bss_conf->ibss_joined) {
|
|
sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
|
|
|
|
if (!common->disable_ani) {
|
|
sc->sc_flags |= SC_OP_ANI_RUN;
|
|
ath_start_ani(common);
|
|
}
|
|
|
|
} else {
|
|
sc->sc_flags &= ~SC_OP_ANI_RUN;
|
|
del_timer_sync(&common->ani.timer);
|
|
del_timer_sync(&sc->rx_poll_timer);
|
|
}
|
|
}
|
|
|
|
/* Enable transmission of beacons (AP, IBSS, MESH) */
|
|
if ((changed & BSS_CHANGED_BEACON) ||
|
|
((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon)) {
|
|
ath9k_set_beaconing_status(sc, false);
|
|
error = ath_beacon_alloc(sc, vif);
|
|
if (!error)
|
|
ath_beacon_config(sc, vif);
|
|
ath9k_set_beaconing_status(sc, true);
|
|
}
|
|
|
|
if (changed & BSS_CHANGED_ERP_SLOT) {
|
|
if (bss_conf->use_short_slot)
|
|
slottime = 9;
|
|
else
|
|
slottime = 20;
|
|
if (vif->type == NL80211_IFTYPE_AP) {
|
|
/*
|
|
* 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 {
|
|
ah->slottime = slottime;
|
|
ath9k_hw_init_global_settings(ah);
|
|
}
|
|
}
|
|
|
|
/* Disable transmission of beacons */
|
|
if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
|
|
!bss_conf->enable_beacon) {
|
|
ath9k_set_beaconing_status(sc, false);
|
|
avp->is_bslot_active = false;
|
|
ath9k_set_beaconing_status(sc, true);
|
|
}
|
|
|
|
if (changed & BSS_CHANGED_BEACON_INT) {
|
|
/*
|
|
* In case of AP mode, the HW TSF has to be reset
|
|
* when the beacon interval changes.
|
|
*/
|
|
if (vif->type == NL80211_IFTYPE_AP) {
|
|
sc->sc_flags |= SC_OP_TSF_RESET;
|
|
ath9k_set_beaconing_status(sc, false);
|
|
error = ath_beacon_alloc(sc, vif);
|
|
if (!error)
|
|
ath_beacon_config(sc, vif);
|
|
ath9k_set_beaconing_status(sc, true);
|
|
} else
|
|
ath_beacon_config(sc, vif);
|
|
}
|
|
|
|
mutex_unlock(&sc->mutex);
|
|
ath9k_ps_restore(sc);
|
|
}
|
|
|
|
static u64 ath9k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
|
|
{
|
|
struct ath_softc *sc = hw->priv;
|
|
u64 tsf;
|
|
|
|
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,
|
|
struct ieee80211_vif *vif,
|
|
u64 tsf)
|
|
{
|
|
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, struct ieee80211_vif *vif)
|
|
{
|
|
struct ath_softc *sc = hw->priv;
|
|
|
|
mutex_lock(&sc->mutex);
|
|
|
|
ath9k_ps_wakeup(sc);
|
|
ath9k_hw_reset_tsf(sc->sc_ah);
|
|
ath9k_ps_restore(sc);
|
|
|
|
mutex_unlock(&sc->mutex);
|
|
}
|
|
|
|
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, u8 buf_size)
|
|
{
|
|
struct ath_softc *sc = hw->priv;
|
|
int ret = 0;
|
|
|
|
local_bh_disable();
|
|
|
|
switch (action) {
|
|
case IEEE80211_AMPDU_RX_START:
|
|
break;
|
|
case IEEE80211_AMPDU_RX_STOP:
|
|
break;
|
|
case IEEE80211_AMPDU_TX_START:
|
|
ath9k_ps_wakeup(sc);
|
|
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:
|
|
ath9k_ps_wakeup(sc);
|
|
ath_tx_aggr_stop(sc, sta, tid);
|
|
ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
|
|
ath9k_ps_restore(sc);
|
|
break;
|
|
case IEEE80211_AMPDU_TX_OPERATIONAL:
|
|
ath9k_ps_wakeup(sc);
|
|
ath_tx_aggr_resume(sc, sta, tid);
|
|
ath9k_ps_restore(sc);
|
|
break;
|
|
default:
|
|
ath_err(ath9k_hw_common(sc->sc_ah), "Unknown AMPDU action\n");
|
|
}
|
|
|
|
local_bh_enable();
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ath9k_get_survey(struct ieee80211_hw *hw, int idx,
|
|
struct survey_info *survey)
|
|
{
|
|
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;
|
|
unsigned long flags;
|
|
int pos;
|
|
|
|
spin_lock_irqsave(&common->cc_lock, flags);
|
|
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_irqrestore(&common->cc_lock, flags);
|
|
return -ENOENT;
|
|
}
|
|
|
|
chan = &sband->channels[idx];
|
|
pos = chan->hw_value;
|
|
memcpy(survey, &sc->survey[pos], sizeof(*survey));
|
|
survey->channel = chan;
|
|
spin_unlock_irqrestore(&common->cc_lock, flags);
|
|
|
|
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;
|
|
|
|
mutex_lock(&sc->mutex);
|
|
ah->coverage_class = coverage_class;
|
|
|
|
ath9k_ps_wakeup(sc);
|
|
ath9k_hw_init_global_settings(ah);
|
|
ath9k_ps_restore(sc);
|
|
|
|
mutex_unlock(&sc->mutex);
|
|
}
|
|
|
|
static void ath9k_flush(struct ieee80211_hw *hw, 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 = 200; /* ms */
|
|
int i, j;
|
|
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 (sc->sc_flags & SC_OP_INVALID) {
|
|
ath_dbg(common, ANY, "Device not present\n");
|
|
mutex_unlock(&sc->mutex);
|
|
return;
|
|
}
|
|
|
|
for (j = 0; j < timeout; j++) {
|
|
bool npend = false;
|
|
|
|
if (j)
|
|
usleep_range(1000, 2000);
|
|
|
|
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
|
|
if (!ATH_TXQ_SETUP(sc, i))
|
|
continue;
|
|
|
|
npend = ath9k_has_pending_frames(sc, &sc->tx.txq[i]);
|
|
|
|
if (npend)
|
|
break;
|
|
}
|
|
|
|
if (!npend)
|
|
break;
|
|
}
|
|
|
|
if (drop) {
|
|
ath9k_ps_wakeup(sc);
|
|
spin_lock_bh(&sc->sc_pcu_lock);
|
|
drain_txq = ath_drain_all_txq(sc, false);
|
|
spin_unlock_bh(&sc->sc_pcu_lock);
|
|
|
|
if (!drain_txq)
|
|
ath_reset(sc, false);
|
|
|
|
ath9k_ps_restore(sc);
|
|
ieee80211_wake_queues(hw);
|
|
}
|
|
|
|
ieee80211_queue_delayed_work(hw, &sc->tx_complete_work, 0);
|
|
mutex_unlock(&sc->mutex);
|
|
}
|
|
|
|
static bool ath9k_tx_frames_pending(struct ieee80211_hw *hw)
|
|
{
|
|
struct ath_softc *sc = hw->priv;
|
|
int i;
|
|
|
|
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;
|
|
|
|
avp = (void *)vif->drv_priv;
|
|
if (!avp->is_bslot_active)
|
|
return 0;
|
|
|
|
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 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 (!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_reload_chainmask_settings(sc);
|
|
|
|
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;
|
|
}
|
|
|
|
struct ieee80211_ops ath9k_ops = {
|
|
.tx = ath9k_tx,
|
|
.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,
|
|
.set_key = ath9k_set_key,
|
|
.get_tsf = ath9k_get_tsf,
|
|
.set_tsf = ath9k_set_tsf,
|
|
.reset_tsf = ath9k_reset_tsf,
|
|
.ampdu_action = ath9k_ampdu_action,
|
|
.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,
|
|
.get_stats = ath9k_get_stats,
|
|
.set_antenna = ath9k_set_antenna,
|
|
.get_antenna = ath9k_get_antenna,
|
|
};
|