diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/main.c')
-rw-r--r-- | drivers/net/wireless/ath/ath9k/main.c | 96 |
1 files changed, 52 insertions, 44 deletions
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 1447b55a8d0a..2d4e9b861b60 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -18,17 +18,6 @@ #include "ath9k.h" #include "btcoex.h" -static void ath_update_txpow(struct ath_softc *sc) -{ - struct ath_hw *ah = sc->sc_ah; - - if (sc->curtxpow != sc->config.txpowlimit) { - ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit, false); - /* read back in case value is clamped */ - sc->curtxpow = ath9k_hw_regulatory(ah)->power_limit; - } -} - static u8 parse_mpdudensity(u8 mpdudensity) { /* @@ -64,19 +53,6 @@ static u8 parse_mpdudensity(u8 mpdudensity) } } -static struct ath9k_channel *ath_get_curchannel(struct ath_softc *sc, - struct ieee80211_hw *hw) -{ - struct ieee80211_channel *curchan = hw->conf.channel; - struct ath9k_channel *channel; - u8 chan_idx; - - chan_idx = curchan->hw_value; - channel = &sc->sc_ah->channels[chan_idx]; - ath9k_cmn_update_ichannel(channel, curchan, hw->conf.channel_type); - return channel; -} - bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode) { unsigned long flags; @@ -177,7 +153,12 @@ static void ath_update_survey_nf(struct ath_softc *sc, int channel) } } -static void ath_update_survey_stats(struct ath_softc *sc) +/* + * Updates the survey statistics and returns the busy time since last + * update in %, if the measurement duration was long enough for the + * result to be useful, -1 otherwise. + */ +static int ath_update_survey_stats(struct ath_softc *sc) { struct ath_hw *ah = sc->sc_ah; struct ath_common *common = ath9k_hw_common(ah); @@ -185,9 +166,10 @@ static void ath_update_survey_stats(struct ath_softc *sc) struct survey_info *survey = &sc->survey[pos]; struct ath_cycle_counters *cc = &common->cc_survey; unsigned int div = common->clockrate * 1000; + int ret = 0; if (!ah->curchan) - return; + return -1; if (ah->power_mode == ATH9K_PM_AWAKE) ath_hw_cycle_counters_update(common); @@ -202,9 +184,18 @@ static void ath_update_survey_stats(struct ath_softc *sc) survey->channel_time_rx += cc->rx_frame / div; survey->channel_time_tx += cc->tx_frame / div; } + + if (cc->cycles < div) + return -1; + + if (cc->cycles > 0) + ret = cc->rx_busy * 100 / cc->cycles; + memset(cc, 0, sizeof(*cc)); ath_update_survey_nf(sc, pos); + + return ret; } /* @@ -226,6 +217,8 @@ int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw, if (sc->sc_flags & SC_OP_INVALID) return -EIO; + sc->hw_busy_count = 0; + del_timer_sync(&common->ani.timer); cancel_work_sync(&sc->paprd_work); cancel_work_sync(&sc->hw_check_work); @@ -284,7 +277,8 @@ int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw, goto ps_restore; } - ath_update_txpow(sc); + ath9k_cmn_update_txpow(ah, sc->curtxpow, + sc->config.txpowlimit, &sc->curtxpow); ath9k_hw_set_interrupts(ah, ah->imask); if (!(sc->sc_flags & (SC_OP_OFFCHANNEL))) { @@ -592,17 +586,25 @@ static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta) void ath_hw_check(struct work_struct *work) { struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work); - int i; + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + unsigned long flags; + int busy; ath9k_ps_wakeup(sc); + if (ath9k_hw_check_alive(sc->sc_ah)) + goto out; - for (i = 0; i < 3; i++) { - if (ath9k_hw_check_alive(sc->sc_ah)) - goto out; + spin_lock_irqsave(&common->cc_lock, flags); + busy = ath_update_survey_stats(sc); + spin_unlock_irqrestore(&common->cc_lock, flags); - msleep(1); - } - ath_reset(sc, true); + ath_dbg(common, ATH_DBG_RESET, "Possible baseband hang, " + "busy=%d (try %d)\n", busy, sc->hw_busy_count + 1); + if (busy >= 99) { + if (++sc->hw_busy_count >= 3) + ath_reset(sc, true); + } else if (busy >= 0) + sc->hw_busy_count = 0; out: ath9k_ps_restore(sc); @@ -867,7 +869,7 @@ void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw) ath9k_hw_configpcipowersave(ah, 0, 0); if (!ah->curchan) - ah->curchan = ath_get_curchannel(sc, sc->hw); + ah->curchan = ath9k_cmn_get_curchannel(sc->hw, ah); r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false); if (r) { @@ -876,7 +878,8 @@ void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw) channel->center_freq, r); } - ath_update_txpow(sc); + ath9k_cmn_update_txpow(ah, sc->curtxpow, + sc->config.txpowlimit, &sc->curtxpow); if (ath_startrecv(sc) != 0) { ath_err(common, "Unable to restart recv logic\n"); goto out; @@ -928,7 +931,7 @@ void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw) ath_flushrecv(sc); /* flush recv queue */ if (!ah->curchan) - ah->curchan = ath_get_curchannel(sc, hw); + ah->curchan = ath9k_cmn_get_curchannel(hw, ah); r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false); if (r) { @@ -952,6 +955,8 @@ int ath_reset(struct ath_softc *sc, bool retry_tx) struct ieee80211_hw *hw = sc->hw; int r; + sc->hw_busy_count = 0; + /* Stop ANI */ del_timer_sync(&common->ani.timer); @@ -979,7 +984,8 @@ int ath_reset(struct ath_softc *sc, bool retry_tx) * that changes the channel so update any state that * might change as a result. */ - ath_update_txpow(sc); + ath9k_cmn_update_txpow(ah, sc->curtxpow, + sc->config.txpowlimit, &sc->curtxpow); if ((sc->sc_flags & SC_OP_BEACONS) || !(sc->sc_flags & (SC_OP_OFFCHANNEL))) ath_beacon_config(sc, NULL); /* restart beacons */ @@ -1029,7 +1035,7 @@ static int ath9k_start(struct ieee80211_hw *hw) /* setup initial channel */ sc->chan_idx = curchan->hw_value; - init_channel = ath_get_curchannel(sc, hw); + init_channel = ath9k_cmn_get_curchannel(hw, ah); /* Reset SERDES registers */ ath9k_hw_configpcipowersave(ah, 0, 0); @@ -1055,7 +1061,8 @@ static int ath9k_start(struct ieee80211_hw *hw) * This is needed only to setup initial state * but it's best done after a reset. */ - ath_update_txpow(sc); + ath9k_cmn_update_txpow(ah, sc->curtxpow, + sc->config.txpowlimit, &sc->curtxpow); /* * Setup the hardware after reset: @@ -1374,6 +1381,7 @@ static void ath9k_calculate_summary_state(struct ieee80211_hw *hw, ath9k_calculate_iter_data(hw, vif, &iter_data); + ath9k_ps_wakeup(sc); /* Set BSSID mask. */ memcpy(common->bssidmask, iter_data.mask, ETH_ALEN); ath_hw_setbssidmask(common); @@ -1408,6 +1416,7 @@ static void ath9k_calculate_summary_state(struct ieee80211_hw *hw, } ath9k_hw_set_interrupts(ah, ah->imask); + ath9k_ps_restore(sc); /* Set up ANI */ if ((iter_data.naps + iter_data.nadhocs) > 0) { @@ -1437,9 +1446,7 @@ static void ath9k_do_vif_add_setup(struct ieee80211_hw *hw, * there. */ error = ath_beacon_alloc(sc, vif); - if (error) - ath9k_reclaim_beacon(sc, vif); - else + if (!error) ath_beacon_config(sc, vif); } } @@ -1720,7 +1727,8 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed) if (changed & IEEE80211_CONF_CHANGE_POWER) { sc->config.txpowlimit = 2 * conf->power_level; ath9k_ps_wakeup(sc); - ath_update_txpow(sc); + ath9k_cmn_update_txpow(ah, sc->curtxpow, + sc->config.txpowlimit, &sc->curtxpow); ath9k_ps_restore(sc); } |