| /* |
| * Copyright (c) 2008-2009 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 |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include <linux/nl80211.h> |
| #include "ath9k.h" |
| #include "btcoex.h" |
| |
| 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; |
| |
| if (sc->curtxpow != sc->config.txpowlimit) { |
| ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit); |
| /* read back in case value is clamped */ |
| sc->curtxpow = ath9k_hw_regulatory(ah)->power_limit; |
| } |
| } |
| |
| static u8 parse_mpdudensity(u8 mpdudensity) |
| { |
| /* |
| * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing": |
| * 0 for no restriction |
| * 1 for 1/4 us |
| * 2 for 1/2 us |
| * 3 for 1 us |
| * 4 for 2 us |
| * 5 for 4 us |
| * 6 for 8 us |
| * 7 for 16 us |
| */ |
| switch (mpdudensity) { |
| case 0: |
| return 0; |
| case 1: |
| case 2: |
| case 3: |
| /* Our lower layer calculations limit our precision to |
| 1 microsecond */ |
| return 1; |
| case 4: |
| return 2; |
| case 5: |
| return 4; |
| case 6: |
| return 8; |
| case 7: |
| return 16; |
| default: |
| return 0; |
| } |
| } |
| |
| 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_update_ichannel(sc, hw, channel); |
| return channel; |
| } |
| |
| bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode) |
| { |
| unsigned long flags; |
| bool ret; |
| |
| spin_lock_irqsave(&sc->sc_pm_lock, flags); |
| ret = ath9k_hw_setpower(sc->sc_ah, mode); |
| spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
| |
| return ret; |
| } |
| |
| void ath9k_ps_wakeup(struct ath_softc *sc) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&sc->sc_pm_lock, flags); |
| if (++sc->ps_usecount != 1) |
| goto unlock; |
| |
| ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE); |
| |
| unlock: |
| spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
| } |
| |
| void ath9k_ps_restore(struct ath_softc *sc) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&sc->sc_pm_lock, flags); |
| if (--sc->ps_usecount != 0) |
| goto unlock; |
| |
| if (sc->ps_idle) |
| ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP); |
| else if (sc->ps_enabled && |
| !(sc->ps_flags & (PS_WAIT_FOR_BEACON | |
| PS_WAIT_FOR_CAB | |
| PS_WAIT_FOR_PSPOLL_DATA | |
| PS_WAIT_FOR_TX_ACK))) |
| ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP); |
| |
| unlock: |
| spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
| } |
| |
| static void ath_start_ani(struct ath_common *common) |
| { |
| struct ath_hw *ah = common->ah; |
| unsigned long timestamp = jiffies_to_msecs(jiffies); |
| struct ath_softc *sc = (struct ath_softc *) common->priv; |
| |
| if (!(sc->sc_flags & SC_OP_ANI_RUN)) |
| return; |
| |
| if (sc->sc_flags & SC_OP_OFFCHANNEL) |
| return; |
| |
| common->ani.longcal_timer = timestamp; |
| common->ani.shortcal_timer = timestamp; |
| common->ani.checkani_timer = timestamp; |
| |
| mod_timer(&common->ani.timer, |
| jiffies + |
| msecs_to_jiffies((u32)ah->config.ani_poll_interval)); |
| } |
| |
| /* |
| * 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) |
| { |
| struct ath_wiphy *aphy = hw->priv; |
| 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; |
| struct ath9k_hw_cal_data *caldata = NULL; |
| int r; |
| |
| if (sc->sc_flags & SC_OP_INVALID) |
| return -EIO; |
| |
| del_timer_sync(&common->ani.timer); |
| cancel_work_sync(&sc->paprd_work); |
| cancel_work_sync(&sc->hw_check_work); |
| cancel_delayed_work_sync(&sc->tx_complete_work); |
| |
| ath9k_ps_wakeup(sc); |
| |
| /* |
| * 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); |
| |
| /* XXX: do not flush receive queue here. We don't want |
| * to flush data frames already in queue because of |
| * changing channel. */ |
| |
| if (!stopped || !(sc->sc_flags & SC_OP_OFFCHANNEL)) |
| fastcc = false; |
| |
| if (!(sc->sc_flags & SC_OP_OFFCHANNEL)) |
| caldata = &aphy->caldata; |
| |
| ath_print(common, ATH_DBG_CONFIG, |
| "(%u MHz) -> (%u MHz), conf_is_ht40: %d fastcc: %d\n", |
| sc->sc_ah->curchan->channel, |
| channel->center_freq, conf_is_ht40(conf), |
| fastcc); |
| |
| spin_lock_bh(&sc->sc_resetlock); |
| |
| r = ath9k_hw_reset(ah, hchan, caldata, 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); |
| |
| if (ath_startrecv(sc) != 0) { |
| ath_print(common, ATH_DBG_FATAL, |
| "Unable to restart recv logic\n"); |
| r = -EIO; |
| goto ps_restore; |
| } |
| |
| ath_cache_conf_rate(sc, &hw->conf); |
| ath_update_txpow(sc); |
| ath9k_hw_set_interrupts(ah, ah->imask); |
| |
| if (!(sc->sc_flags & (SC_OP_OFFCHANNEL))) { |
| ath_beacon_config(sc, NULL); |
| ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0); |
| ath_start_ani(common); |
| } |
| |
| ps_restore: |
| ath9k_ps_restore(sc); |
| return r; |
| } |
| |
| static void ath_paprd_activate(struct ath_softc *sc) |
| { |
| struct ath_hw *ah = sc->sc_ah; |
| struct ath9k_hw_cal_data *caldata = ah->caldata; |
| int chain; |
| |
| if (!caldata || !caldata->paprd_done) |
| return; |
| |
| ath9k_ps_wakeup(sc); |
| ar9003_paprd_enable(ah, false); |
| for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) { |
| if (!(ah->caps.tx_chainmask & BIT(chain))) |
| continue; |
| |
| ar9003_paprd_populate_single_table(ah, caldata, chain); |
| } |
| |
| ar9003_paprd_enable(ah, true); |
| ath9k_ps_restore(sc); |
| } |
| |
| void ath_paprd_calibrate(struct work_struct *work) |
| { |
| struct ath_softc *sc = container_of(work, struct ath_softc, paprd_work); |
| struct ieee80211_hw *hw = sc->hw; |
| struct ath_hw *ah = sc->sc_ah; |
| struct ieee80211_hdr *hdr; |
| struct sk_buff *skb = NULL; |
| struct ieee80211_tx_info *tx_info; |
| int band = hw->conf.channel->band; |
| struct ieee80211_supported_band *sband = &sc->sbands[band]; |
| struct ath_tx_control txctl; |
| struct ath9k_hw_cal_data *caldata = ah->caldata; |
| int qnum, ftype; |
| int chain_ok = 0; |
| int chain; |
| int len = 1800; |
| int time_left; |
| int i; |
| |
| if (!caldata) |
| return; |
| |
| skb = alloc_skb(len, GFP_KERNEL); |
| if (!skb) |
| return; |
| |
| tx_info = IEEE80211_SKB_CB(skb); |
| |
| skb_put(skb, len); |
| memset(skb->data, 0, len); |
| hdr = (struct ieee80211_hdr *)skb->data; |
| ftype = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC; |
| hdr->frame_control = cpu_to_le16(ftype); |
| hdr->duration_id = cpu_to_le16(10); |
| memcpy(hdr->addr1, hw->wiphy->perm_addr, ETH_ALEN); |
| memcpy(hdr->addr2, hw->wiphy->perm_addr, ETH_ALEN); |
| memcpy(hdr->addr3, hw->wiphy->perm_addr, ETH_ALEN); |
| |
| memset(&txctl, 0, sizeof(txctl)); |
| qnum = sc->tx.hwq_map[WME_AC_BE]; |
| txctl.txq = &sc->tx.txq[qnum]; |
| |
| ath9k_ps_wakeup(sc); |
| ar9003_paprd_init_table(ah); |
| for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) { |
| if (!(ah->caps.tx_chainmask & BIT(chain))) |
| continue; |
| |
| chain_ok = 0; |
| memset(tx_info, 0, sizeof(*tx_info)); |
| tx_info->band = band; |
| |
| for (i = 0; i < 4; i++) { |
| tx_info->control.rates[i].idx = sband->n_bitrates - 1; |
| tx_info->control.rates[i].count = 6; |
| } |
| |
| init_completion(&sc->paprd_complete); |
| ar9003_paprd_setup_gain_table(ah, chain); |
| txctl.paprd = BIT(chain); |
| if (ath_tx_start(hw, skb, &txctl) != 0) |
| break; |
| |
| time_left = wait_for_completion_timeout(&sc->paprd_complete, |
| msecs_to_jiffies(ATH_PAPRD_TIMEOUT)); |
| if (!time_left) { |
| ath_print(ath9k_hw_common(ah), ATH_DBG_CALIBRATE, |
| "Timeout waiting for paprd training on " |
| "TX chain %d\n", |
| chain); |
| goto fail_paprd; |
| } |
| |
| if (!ar9003_paprd_is_done(ah)) |
| break; |
| |
| if (ar9003_paprd_create_curve(ah, caldata, chain) != 0) |
| 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; |
| |
| 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; |
| 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; |
| } |
| } 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 ((timestamp - common->ani.checkani_timer) >= |
| ah->config.ani_poll_interval) { |
| aniflag = true; |
| common->ani.checkani_timer = timestamp; |
| } |
| |
| /* 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); |
| |
| /* Perform calibration if necessary */ |
| if (longcal || shortcal) { |
| common->ani.caldone = |
| ath9k_hw_calibrate(ah, |
| ah->curchan, |
| common->rx_chainmask, |
| longcal); |
| |
| if (longcal) |
| common->ani.noise_floor = ath9k_hw_getchan_noise(ah, |
| ah->curchan); |
| |
| ath_print(common, ATH_DBG_ANI, |
| " calibrate chan %u/%x nf: %d\n", |
| ah->curchan->channel, |
| ah->curchan->channelFlags, |
| common->ani.noise_floor); |
| } |
| } |
| |
| 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. |
| */ |
| 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 |
| ath_paprd_activate(sc); |
| } |
| } |
| |
| /* |
| * 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) |
| { |
| struct ath_hw *ah = sc->sc_ah; |
| struct ath_common *common = ath9k_hw_common(ah); |
| |
| if ((sc->sc_flags & SC_OP_OFFCHANNEL) || is_ht || |
| (ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE)) { |
| common->tx_chainmask = ah->caps.tx_chainmask; |
| common->rx_chainmask = ah->caps.rx_chainmask; |
| } else { |
| common->tx_chainmask = 1; |
| common->rx_chainmask = 1; |
| } |
| |
| ath_print(common, ATH_DBG_CONFIG, |
| "tx chmask: %d, rx chmask: %d\n", |
| common->tx_chainmask, |
| common->rx_chainmask); |
| } |
| |
| static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta) |
| { |
| 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; |
| } |
| } |
| |
| 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); |
| } |
| |
| void ath_hw_check(struct work_struct *work) |
| { |
| struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work); |
| int i; |
| |
| ath9k_ps_wakeup(sc); |
| |
| for (i = 0; i < 3; i++) { |
| if (ath9k_hw_check_alive(sc->sc_ah)) |
| goto out; |
| |
| msleep(1); |
| } |
| ath_reset(sc, false); |
| |
| out: |
| ath9k_ps_restore(sc); |
| } |
| |
| 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); |
| |
| if (status & ATH9K_INT_FATAL) { |
| ath_reset(sc, false); |
| ath9k_ps_restore(sc); |
| return; |
| } |
| |
| if (!ath9k_hw_check_alive(ah)) |
| ieee80211_queue_work(sc->hw, &sc->hw_check_work); |
| |
| 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) { |
| spin_lock_bh(&sc->rx.rxflushlock); |
| |
| /* 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); |
| spin_unlock_bh(&sc->rx.rxflushlock); |
| } |
| |
| if (status & ATH9K_INT_TX) { |
| if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) |
| ath_tx_edma_tasklet(sc); |
| else |
| ath_tx_tasklet(sc); |
| } |
| |
| 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->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC; |
| } |
| |
| if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) |
| if (status & ATH9K_INT_GENTIMER) |
| ath_gen_timer_isr(sc->sc_ah); |
| |
| /* re-enable hardware interrupt */ |
| ath9k_hw_set_interrupts(ah, ah->imask); |
| ath9k_ps_restore(sc); |
| } |
| |
| irqreturn_t ath_isr(int irq, void *dev) |
| { |
| #define SCHED_INTR ( \ |
| ATH9K_INT_FATAL | \ |
| 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) |
| |
| struct ath_softc *sc = dev; |
| struct ath_hw *ah = sc->sc_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)) { |
| ar9003_hw_bb_watchdog_dbg_info(ah); |
| goto chip_reset; |
| } |
| |
| if (status & ATH9K_INT_SWBA) |
| tasklet_schedule(&sc->bcon_tasklet); |
| |
| if (status & ATH9K_INT_TXURN) |
| ath9k_hw_updatetxtriglevel(ah, true); |
| |
| if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) { |
| if (status & ATH9K_INT_RXEOL) { |
| ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN); |
| ath9k_hw_set_interrupts(ah, ah->imask); |
| } |
| } |
| |
| 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, ah->imask); |
| } |
| |
| if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) |
| if (status & ATH9K_INT_TIM_TIMER) { |
| /* 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 except SWBA */ |
| ath9k_hw_set_interrupts(ah, (ah->imask & ATH9K_INT_SWBA)); |
| tasklet_schedule(&sc->intr_tq); |
| } |
| |
| return IRQ_HANDLED; |
| |
| #undef SCHED_INTR |
| } |
| |
| static u32 ath_get_extchanmode(struct ath_softc *sc, |
| struct ieee80211_channel *chan, |
| enum nl80211_channel_type channel_type) |
| { |
| u32 chanmode = 0; |
| |
| 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; |
| } |
| |
| return chanmode; |
| } |
| |
| static void ath9k_bss_assoc_info(struct ath_softc *sc, |
| struct ieee80211_vif *vif, |
| struct ieee80211_bss_conf *bss_conf) |
| { |
| 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); |
| |
| /* |
| * 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; |
| |
| /* Configure the beacon */ |
| ath_beacon_config(sc, vif); |
| |
| /* Reset rssi stats */ |
| sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER; |
| |
| sc->sc_flags |= SC_OP_ANI_RUN; |
| ath_start_ani(common); |
| } else { |
| ath_print(common, ATH_DBG_CONFIG, "Bss Info DISASSOC\n"); |
| common->curaid = 0; |
| /* Stop ANI */ |
| sc->sc_flags &= ~SC_OP_ANI_RUN; |
| del_timer_sync(&common->ani.timer); |
| } |
| } |
| |
| void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw) |
| { |
| struct ath_hw *ah = sc->sc_ah; |
| struct ath_common *common = ath9k_hw_common(ah); |
| struct ieee80211_channel *channel = hw->conf.channel; |
| int r; |
| |
| ath9k_ps_wakeup(sc); |
| ath9k_hw_configpcipowersave(ah, 0, 0); |
| |
| if (!ah->curchan) |
| ah->curchan = ath_get_curchannel(sc, sc->hw); |
| |
| spin_lock_bh(&sc->sc_resetlock); |
| r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false); |
| 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); |
| |
| ath_update_txpow(sc); |
| if (ath_startrecv(sc) != 0) { |
| ath_print(common, ATH_DBG_FATAL, |
| "Unable to restart recv logic\n"); |
| return; |
| } |
| |
| if (sc->sc_flags & SC_OP_BEACONS) |
| ath_beacon_config(sc, NULL); /* restart beacons */ |
| |
| /* Re-Enable interrupts */ |
| ath9k_hw_set_interrupts(ah, ah->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; |
| |
| ath9k_ps_wakeup(sc); |
| ieee80211_stop_queues(hw); |
| |
| /* |
| * Keep the LED on when the radio is disabled |
| * during idle unassociated state. |
| */ |
| if (!sc->ps_idle) { |
| 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, ah->caldata, false); |
| if (r) { |
| ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL, |
| "Unable to reset channel (%u MHz), " |
| "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); |
| } |
| |
| int ath_reset(struct ath_softc *sc, bool retry_tx) |
| { |
| 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); |
| |
| ieee80211_stop_queues(hw); |
| |
| 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, ah->caldata, 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) || !(sc->sc_flags & (SC_OP_OFFCHANNEL))) |
| ath_beacon_config(sc, NULL); /* restart beacons */ |
| |
| ath9k_hw_set_interrupts(ah, ah->imask); |
| |
| 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); |
| } |
| } |
| } |
| |
| ieee80211_wake_queues(hw); |
| |
| /* Start ANI */ |
| ath_start_ani(common); |
| |
| return r; |
| } |
| |
| static int ath_get_hal_qnum(u16 queue, struct ath_softc *sc) |
| { |
| int qnum; |
| |
| switch (queue) { |
| case 0: |
| qnum = sc->tx.hwq_map[WME_AC_VO]; |
| break; |
| case 1: |
| qnum = sc->tx.hwq_map[WME_AC_VI]; |
| break; |
| case 2: |
| qnum = sc->tx.hwq_map[WME_AC_BE]; |
| break; |
| case 3: |
| qnum = sc->tx.hwq_map[WME_AC_BK]; |
| break; |
| default: |
| qnum = sc->tx.hwq_map[WME_AC_BE]; |
| break; |
| } |
| |
| return qnum; |
| } |
| |
| int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc) |
| { |
| int qnum; |
| |
| switch (queue) { |
| case WME_AC_VO: |
| qnum = 0; |
| break; |
| case WME_AC_VI: |
| qnum = 1; |
| break; |
| case WME_AC_BE: |
| qnum = 2; |
| break; |
| case WME_AC_BK: |
| qnum = 3; |
| break; |
| default: |
| qnum = -1; |
| break; |
| } |
| |
| return qnum; |
| } |
| |
| /* 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; |
| |
| ichan->channel = chan->center_freq; |
| ichan->chan = chan; |
| |
| 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 (conf_is_ht(conf)) |
| ichan->chanmode = ath_get_extchanmode(sc, chan, |
| conf->channel_type); |
| } |
| |
| /**********************/ |
| /* mac80211 callbacks */ |
| /**********************/ |
| |
| static int ath9k_start(struct ieee80211_hw *hw) |
| { |
| 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; |
| |
| ath_print(common, ATH_DBG_CONFIG, |
| "Starting driver with initial channel: %d MHz\n", |
| curchan->center_freq); |
| |
| 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, ah->caldata, 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_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); |
| |
| /* |
| * 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. */ |
| 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; |
| |
| ath_cache_conf_rate(sc, &hw->conf); |
| |
| sc->sc_flags &= ~SC_OP_INVALID; |
| |
| /* Disable BMISS interrupt when we're not associated */ |
| ah->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS); |
| ath9k_hw_set_interrupts(ah, ah->imask); |
| |
| ieee80211_wake_queues(hw); |
| |
| ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0); |
| |
| 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); |
| |
| 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) |
| { |
| 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; |
| int qnum; |
| |
| 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 (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); |
| } |
| } |
| |
| 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_print(common, ATH_DBG_PS, |
| "Sending PS-Poll to pick a buffered frame\n"); |
| sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA; |
| } else { |
| ath_print(common, ATH_DBG_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)); |
| |
| /* |
| * 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); |
| } |
| |
| qnum = ath_get_hal_qnum(skb_get_queue_mapping(skb), sc); |
| txctl.txq = &sc->tx.txq[qnum]; |
| |
| 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; |
| } |
| |
| static void ath9k_stop(struct ieee80211_hw *hw) |
| { |
| 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); |
| int i; |
| |
| mutex_lock(&sc->mutex); |
| |
| aphy->state = ATH_WIPHY_INACTIVE; |
| |
| if (led_blink) |
| cancel_delayed_work_sync(&sc->ath_led_blink_work); |
| |
| cancel_delayed_work_sync(&sc->tx_complete_work); |
| cancel_work_sync(&sc->paprd_work); |
| cancel_work_sync(&sc->hw_check_work); |
| |
| for (i = 0; i < sc->num_sec_wiphy; i++) { |
| if (sc->sec_wiphy[i]) |
| break; |
| } |
| |
| if (i == 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); |
| return; |
| } |
| |
| if (ath9k_wiphy_started(sc)) { |
| mutex_unlock(&sc->mutex); |
| return; /* another wiphy still in use */ |
| } |
| |
| /* 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); |
| 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_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 ath_vif *avp = (void *)vif->drv_priv; |
| enum nl80211_iftype ic_opmode = NL80211_IFTYPE_UNSPECIFIED; |
| int ret = 0; |
| |
| mutex_lock(&sc->mutex); |
| |
| switch (vif->type) { |
| case NL80211_IFTYPE_STATION: |
| ic_opmode = NL80211_IFTYPE_STATION; |
| 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 = vif->type; |
| break; |
| default: |
| ath_print(common, ATH_DBG_FATAL, |
| "Interface type %d not yet supported\n", vif->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++; |
| |
| ath9k_set_bssid_mask(hw, vif); |
| |
| if (sc->nvifs > 1) |
| goto out; /* skip global settings for secondary vif */ |
| |
| if (ic_opmode == NL80211_IFTYPE_AP) { |
| ath9k_hw_set_tsfadjust(ah, 1); |
| sc->sc_flags |= SC_OP_TSF_RESET; |
| } |
| |
| /* Set the device opmode */ |
| 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 ((vif->type == NL80211_IFTYPE_STATION) || |
| (vif->type == NL80211_IFTYPE_ADHOC) || |
| (vif->type == NL80211_IFTYPE_MESH_POINT)) { |
| if (ah->config.enable_ani) |
| ah->imask |= ATH9K_INT_MIB; |
| ah->imask |= ATH9K_INT_TSFOOR; |
| } |
| |
| ath9k_hw_set_interrupts(ah, ah->imask); |
| |
| if (vif->type == NL80211_IFTYPE_AP || |
| vif->type == NL80211_IFTYPE_ADHOC || |
| vif->type == NL80211_IFTYPE_MONITOR) { |
| sc->sc_flags |= SC_OP_ANI_RUN; |
| ath_start_ani(common); |
| } |
| |
| out: |
| mutex_unlock(&sc->mutex); |
| return ret; |
| } |
| |
| 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_common *common = ath9k_hw_common(sc->sc_ah); |
| struct ath_vif *avp = (void *)vif->drv_priv; |
| int i; |
| |
| ath_print(common, ATH_DBG_CONFIG, "Detach Interface\n"); |
| |
| mutex_lock(&sc->mutex); |
| |
| /* Stop ANI */ |
| sc->sc_flags &= ~SC_OP_ANI_RUN; |
| 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); |
| ath9k_ps_restore(sc); |
| } |
| |
| ath_beacon_return(sc, avp); |
| sc->sc_flags &= ~SC_OP_BEACONS; |
| |
| for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) { |
| if (sc->beacon.bslot[i] == vif) { |
| printk(KERN_DEBUG "%s: vif had allocated beacon " |
| "slot\n", __func__); |
| sc->beacon.bslot[i] = NULL; |
| sc->beacon.bslot_aphy[i] = NULL; |
| } |
| } |
| |
| sc->nvifs--; |
| |
| mutex_unlock(&sc->mutex); |
| } |
| |
| 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, ah->imask); |
| } |
| ath9k_hw_setrxabort(ah, 1); |
| } |
| } |
| |
| 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_hw *ah = sc->sc_ah; |
| bool disable_radio; |
| |
| 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); |
| |
| enable_radio = (!idle && all_wiphys_idle); |
| |
| /* |
| * 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) { |
| sc->ps_idle = false; |
| ath_radio_enable(sc, hw); |
| ath_print(common, ATH_DBG_CONFIG, |
| "not-idle: enabling radio\n"); |
| } |
| } |
| |
| /* |
| * 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) { |
| sc->ps_flags |= PS_ENABLED; |
| /* |
| * At this point we know hardware has received an ACK |
| * of a previously sent null data frame. |
| */ |
| if ((sc->ps_flags & PS_NULLFUNC_COMPLETED)) { |
| sc->ps_flags &= ~PS_NULLFUNC_COMPLETED; |
| ath9k_enable_ps(sc); |
| } |
| } else { |
| sc->ps_enabled = false; |
| sc->ps_flags &= ~(PS_ENABLED | |
| PS_NULLFUNC_COMPLETED); |
| ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE); |
| if (!(ah->caps.hw_caps & |
| ATH9K_HW_CAP_AUTOSLEEP)) { |
| ath9k_hw_setrxabort(sc->sc_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(sc->sc_ah, |
| ah->imask); |
| } |
| } |
| } |
| spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
| } |
| |
| if (changed & IEEE80211_CONF_CHANGE_MONITOR) { |
| if (conf->flags & IEEE80211_CONF_MONITOR) { |
| ath_print(common, ATH_DBG_CONFIG, |
| "HW opmode set to Monitor mode\n"); |
| sc->sc_ah->opmode = NL80211_IFTYPE_MONITOR; |
| } |
| } |
| |
| 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 (hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) |
| sc->sc_flags |= SC_OP_OFFCHANNEL; |
| else |
| sc->sc_flags &= ~SC_OP_OFFCHANNEL; |
| |
| 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; |
| } |
| |
| 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"); |
| mutex_unlock(&sc->mutex); |
| return -EINVAL; |
| } |
| } |
| |
| skip_chan_change: |
| if (changed & IEEE80211_CONF_CHANGE_POWER) { |
| sc->config.txpowlimit = 2 * conf->power_level; |
| ath_update_txpow(sc); |
| } |
| |
| 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"); |
| sc->ps_idle = true; |
| ath_radio_disable(sc, hw); |
| } |
| |
| mutex_unlock(&sc->mutex); |
| |
| return 0; |
| } |
| |
| #define SUPPORTED_FILTERS \ |
| (FIF_PROMISC_IN_BSS | \ |
| FIF_ALLMULTI | \ |
| FIF_CONTROL | \ |
| FIF_PSPOLL | \ |
| FIF_OTHER_BSS | \ |
| FIF_BCN_PRBRESP_PROMISC | \ |
| 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_wiphy *aphy = hw->priv; |
| struct ath_softc *sc = aphy->sc; |
| 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_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_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_wiphy *aphy = hw->priv; |
| struct ath_softc *sc = aphy->sc; |
| |
| ath_node_attach(sc, sta); |
| |
| return 0; |
| } |
| |
| static int ath9k_sta_remove(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_sta *sta) |
| { |
| struct ath_wiphy *aphy = hw->priv; |
| struct ath_softc *sc = aphy->sc; |
| |
| ath_node_detach(sc, sta); |
| |
| return 0; |
| } |
| |
| static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue, |
| const struct ieee80211_tx_queue_params *params) |
| { |
| struct ath_wiphy *aphy = hw->priv; |
| struct ath_softc *sc = aphy->sc; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| struct ath9k_tx_queue_info qi; |
| int ret = 0, qnum; |
| |
| if (queue >= WME_NUM_AC) |
| return 0; |
| |
| 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; |
| qnum = ath_get_hal_qnum(queue, sc); |
| |
| 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); |
| |
| ret = ath_txq_update(sc, 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[WME_AC_BE]) && !ret) |
| ath_beaconq_config(sc); |
| |
| mutex_unlock(&sc->mutex); |
| |
| 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_wiphy *aphy = hw->priv; |
| struct ath_softc *sc = aphy->sc; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| int ret = 0; |
| |
| if (modparam_nohwcrypt) |
| return -ENOSPC; |
| |
| mutex_lock(&sc->mutex); |
| ath9k_ps_wakeup(sc); |
| ath_print(common, ATH_DBG_CONFIG, "Set HW Key\n"); |
| |
| switch (cmd) { |
| case SET_KEY: |
| 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_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; |
| 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; |
| |
| 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; |
| |
| /* Only legacy IBSS for now */ |
| if (vif->type == NL80211_IFTYPE_ADHOC) |
| ath_update_chainmask(sc, 0); |
| |
| ath_print(common, ATH_DBG_CONFIG, |
| "BSSID: %pM aid: 0x%x\n", |
| common->curbssid, common->curaid); |
| |
| /* need to reconfigure the beacon */ |
| sc->sc_flags &= ~SC_OP_BEACONS ; |
| } |
| |
| /* 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_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_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq); |
| |
| 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 (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); |
| } else { |
| ath_beacon_config(sc, vif); |
| } |
| } |
| |
| 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_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); |
| } |
| |
| mutex_unlock(&sc->mutex); |
| } |
| |
| static u64 ath9k_get_tsf(struct ieee80211_hw *hw) |
| { |
| u64 tsf; |
| struct ath_wiphy *aphy = hw->priv; |
| struct ath_softc *sc = aphy->sc; |
| |
| mutex_lock(&sc->mutex); |
| tsf = ath9k_hw_gettsf64(sc->sc_ah); |
| mutex_unlock(&sc->mutex); |
| |
| return tsf; |
| } |
| |
| static void ath9k_set_tsf(struct ieee80211_hw *hw, u64 tsf) |
| { |
| struct ath_wiphy *aphy = hw->priv; |
| struct ath_softc *sc = aphy->sc; |
| |
| mutex_lock(&sc->mutex); |
| ath9k_hw_settsf64(sc->sc_ah, tsf); |
| mutex_unlock(&sc->mutex); |
| } |
| |
| static void ath9k_reset_tsf(struct ieee80211_hw *hw) |
| { |
| struct ath_wiphy *aphy = hw->priv; |
| struct ath_softc *sc = aphy->sc; |
| |
| 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) |
| { |
| struct ath_wiphy *aphy = hw->priv; |
| struct ath_softc *sc = aphy->sc; |
| int ret = 0; |
| |
| local_bh_disable(); |
| |
| 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); |
| 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_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL, |
| "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_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_conf *conf = &hw->conf; |
| |
| if (idx != 0) |
| return -ENOENT; |
| |
| survey->channel = conf->channel; |
| survey->filled = SURVEY_INFO_NOISE_DBM; |
| survey->noise = common->ani.noise_floor; |
| |
| return 0; |
| } |
| |
| static void ath9k_sw_scan_start(struct ieee80211_hw *hw) |
| { |
| struct ath_wiphy *aphy = hw->priv; |
| struct ath_softc *sc = aphy->sc; |
| |
| mutex_lock(&sc->mutex); |
| if (ath9k_wiphy_scanning(sc)) { |
| /* |
| * There is a race here in mac80211 but fixing it requires |
| * we revisit how we handle the scan complete callback. |
| * After mac80211 fixes we will not have configured hardware |
| * to the home channel nor would we have configured the RX |
| * filter yet. |
| */ |
| mutex_unlock(&sc->mutex); |
| return; |
| } |
| |
| aphy->state = ATH_WIPHY_SCAN; |
| ath9k_wiphy_pause_all_forced(sc, aphy); |
| mutex_unlock(&sc->mutex); |
| } |
| |
| /* |
| * XXX: this requires a revisit after the driver |
| * scan_complete gets moved to another place/removed in mac80211. |
| */ |
| static void ath9k_sw_scan_complete(struct ieee80211_hw *hw) |
| { |
| struct ath_wiphy *aphy = hw->priv; |
| struct ath_softc *sc = aphy->sc; |
| |
| mutex_lock(&sc->mutex); |
| aphy->state = ATH_WIPHY_ACTIVE; |
| mutex_unlock(&sc->mutex); |
| } |
| |
| static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class) |
| { |
| struct ath_wiphy *aphy = hw->priv; |
| struct ath_softc *sc = aphy->sc; |
| struct ath_hw *ah = sc->sc_ah; |
| |
| mutex_lock(&sc->mutex); |
| ah->coverage_class = coverage_class; |
| ath9k_hw_init_global_settings(ah); |
| mutex_unlock(&sc->mutex); |
| } |
| |
| struct ieee80211_ops ath9k_ops = { |
| .tx = ath9k_tx, |
| .start = ath9k_start, |
| .stop = ath9k_stop, |
| .add_interface = ath9k_add_interface, |
| .remove_interface = ath9k_remove_interface, |
| .config = ath9k_config, |
| .configure_filter = ath9k_configure_filter, |
| .sta_add = ath9k_sta_add, |
| .sta_remove = ath9k_sta_remove, |
| .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, |
| .sw_scan_start = ath9k_sw_scan_start, |
| .sw_scan_complete = ath9k_sw_scan_complete, |
| .rfkill_poll = ath9k_rfkill_poll_state, |
| .set_coverage_class = ath9k_set_coverage_class, |
| }; |