| /* |
| * Copyright (c) 2008-2011 Atheros Communications Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * 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 <linux/delay.h> |
| #include "ath9k.h" |
| #include "btcoex.h" |
| |
| u8 ath9k_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 bool ath9k_has_pending_frames(struct ath_softc *sc, struct ath_txq *txq, |
| bool sw_pending) |
| { |
| bool pending = false; |
| |
| spin_lock_bh(&txq->axq_lock); |
| |
| if (txq->axq_depth) { |
| pending = true; |
| goto out; |
| } |
| |
| if (!sw_pending) |
| goto out; |
| |
| if (txq->mac80211_qnum >= 0) { |
| struct list_head *list; |
| |
| list = &sc->cur_chan->acq[txq->mac80211_qnum]; |
| if (!list_empty(list)) |
| pending = true; |
| } |
| out: |
| spin_unlock_bh(&txq->axq_lock); |
| return pending; |
| } |
| |
| static 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 ath_ps_full_sleep(unsigned long data) |
| { |
| struct ath_softc *sc = (struct ath_softc *) data; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| bool reset; |
| |
| spin_lock(&common->cc_lock); |
| ath_hw_cycle_counters_update(common); |
| spin_unlock(&common->cc_lock); |
| |
| ath9k_hw_setrxabort(sc->sc_ah, 1); |
| ath9k_hw_stopdmarecv(sc->sc_ah, &reset); |
| |
| ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP); |
| } |
| |
| void ath9k_ps_wakeup(struct ath_softc *sc) |
| { |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| unsigned long flags; |
| enum ath9k_power_mode power_mode; |
| |
| spin_lock_irqsave(&sc->sc_pm_lock, flags); |
| if (++sc->ps_usecount != 1) |
| goto unlock; |
| |
| del_timer_sync(&sc->sleep_timer); |
| power_mode = sc->sc_ah->power_mode; |
| ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE); |
| |
| /* |
| * While the hardware is asleep, the cycle counters contain no |
| * useful data. Better clear them now so that they don't mess up |
| * survey data results. |
| */ |
| if (power_mode != ATH9K_PM_AWAKE) { |
| spin_lock(&common->cc_lock); |
| ath_hw_cycle_counters_update(common); |
| memset(&common->cc_survey, 0, sizeof(common->cc_survey)); |
| memset(&common->cc_ani, 0, sizeof(common->cc_ani)); |
| spin_unlock(&common->cc_lock); |
| } |
| |
| unlock: |
| spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
| } |
| |
| void ath9k_ps_restore(struct ath_softc *sc) |
| { |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| enum ath9k_power_mode mode; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&sc->sc_pm_lock, flags); |
| if (--sc->ps_usecount != 0) |
| goto unlock; |
| |
| if (sc->ps_idle) { |
| mod_timer(&sc->sleep_timer, jiffies + HZ / 10); |
| goto unlock; |
| } |
| |
| if (sc->ps_enabled && |
| !(sc->ps_flags & (PS_WAIT_FOR_BEACON | |
| PS_WAIT_FOR_CAB | |
| PS_WAIT_FOR_PSPOLL_DATA | |
| PS_WAIT_FOR_TX_ACK | |
| PS_WAIT_FOR_ANI))) { |
| mode = ATH9K_PM_NETWORK_SLEEP; |
| if (ath9k_hw_btcoex_is_enabled(sc->sc_ah)) |
| ath9k_btcoex_stop_gen_timer(sc); |
| } else { |
| goto unlock; |
| } |
| |
| spin_lock(&common->cc_lock); |
| ath_hw_cycle_counters_update(common); |
| spin_unlock(&common->cc_lock); |
| |
| ath9k_hw_setpower(sc->sc_ah, mode); |
| |
| unlock: |
| spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
| } |
| |
| static void __ath_cancel_work(struct ath_softc *sc) |
| { |
| cancel_work_sync(&sc->paprd_work); |
| cancel_delayed_work_sync(&sc->tx_complete_work); |
| cancel_delayed_work_sync(&sc->hw_pll_work); |
| |
| #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT |
| if (ath9k_hw_mci_is_enabled(sc->sc_ah)) |
| cancel_work_sync(&sc->mci_work); |
| #endif |
| } |
| |
| void ath_cancel_work(struct ath_softc *sc) |
| { |
| __ath_cancel_work(sc); |
| cancel_work_sync(&sc->hw_reset_work); |
| } |
| |
| void ath_restart_work(struct ath_softc *sc) |
| { |
| ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0); |
| |
| if (AR_SREV_9340(sc->sc_ah) || AR_SREV_9330(sc->sc_ah)) |
| ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, |
| msecs_to_jiffies(ATH_PLL_WORK_INTERVAL)); |
| |
| ath_start_ani(sc); |
| } |
| |
| static bool ath_prepare_reset(struct ath_softc *sc) |
| { |
| struct ath_hw *ah = sc->sc_ah; |
| bool ret = true; |
| |
| ieee80211_stop_queues(sc->hw); |
| ath_stop_ani(sc); |
| ath9k_hw_disable_interrupts(ah); |
| |
| if (!ath_drain_all_txq(sc)) |
| ret = false; |
| |
| if (!ath_stoprecv(sc)) |
| ret = false; |
| |
| return ret; |
| } |
| |
| static bool ath_complete_reset(struct ath_softc *sc, bool start) |
| { |
| struct ath_hw *ah = sc->sc_ah; |
| struct ath_common *common = ath9k_hw_common(ah); |
| unsigned long flags; |
| |
| ath9k_calculate_summary_state(sc, sc->cur_chan); |
| ath_startrecv(sc); |
| ath9k_cmn_update_txpow(ah, sc->cur_chan->cur_txpower, |
| sc->cur_chan->txpower, |
| &sc->cur_chan->cur_txpower); |
| clear_bit(ATH_OP_HW_RESET, &common->op_flags); |
| |
| if (!sc->cur_chan->offchannel && start) { |
| /* restore per chanctx TSF timer */ |
| if (sc->cur_chan->tsf_val) { |
| u32 offset; |
| |
| offset = ath9k_hw_get_tsf_offset(&sc->cur_chan->tsf_ts, |
| NULL); |
| ath9k_hw_settsf64(ah, sc->cur_chan->tsf_val + offset); |
| } |
| |
| |
| if (!test_bit(ATH_OP_BEACONS, &common->op_flags)) |
| goto work; |
| |
| if (ah->opmode == NL80211_IFTYPE_STATION && |
| test_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags)) { |
| spin_lock_irqsave(&sc->sc_pm_lock, flags); |
| sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON; |
| spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
| } else { |
| ath9k_set_beacon(sc); |
| } |
| work: |
| ath_restart_work(sc); |
| ath_txq_schedule_all(sc); |
| } |
| |
| sc->gtt_cnt = 0; |
| |
| ath9k_hw_set_interrupts(ah); |
| ath9k_hw_enable_interrupts(ah); |
| ieee80211_wake_queues(sc->hw); |
| ath9k_p2p_ps_timer(sc); |
| |
| return true; |
| } |
| |
| static int ath_reset_internal(struct ath_softc *sc, struct ath9k_channel *hchan) |
| { |
| struct ath_hw *ah = sc->sc_ah; |
| struct ath_common *common = ath9k_hw_common(ah); |
| struct ath9k_hw_cal_data *caldata = NULL; |
| bool fastcc = true; |
| int r; |
| |
| __ath_cancel_work(sc); |
| |
| tasklet_disable(&sc->intr_tq); |
| tasklet_disable(&sc->bcon_tasklet); |
| spin_lock_bh(&sc->sc_pcu_lock); |
| |
| if (!sc->cur_chan->offchannel) { |
| fastcc = false; |
| caldata = &sc->cur_chan->caldata; |
| } |
| |
| if (!hchan) { |
| fastcc = false; |
| hchan = ah->curchan; |
| } |
| |
| if (!ath_prepare_reset(sc)) |
| fastcc = false; |
| |
| if (ath9k_is_chanctx_enabled()) |
| fastcc = false; |
| |
| spin_lock_bh(&sc->chan_lock); |
| sc->cur_chandef = sc->cur_chan->chandef; |
| spin_unlock_bh(&sc->chan_lock); |
| |
| ath_dbg(common, CONFIG, "Reset to %u MHz, HT40: %d fastcc: %d\n", |
| hchan->channel, IS_CHAN_HT40(hchan), fastcc); |
| |
| r = ath9k_hw_reset(ah, hchan, caldata, fastcc); |
| if (r) { |
| ath_err(common, |
| "Unable to reset channel, reset status %d\n", r); |
| |
| ath9k_hw_enable_interrupts(ah); |
| ath9k_queue_reset(sc, RESET_TYPE_BB_HANG); |
| |
| goto out; |
| } |
| |
| if (ath9k_hw_mci_is_enabled(sc->sc_ah) && |
| sc->cur_chan->offchannel) |
| ath9k_mci_set_txpower(sc, true, false); |
| |
| if (!ath_complete_reset(sc, true)) |
| r = -EIO; |
| |
| out: |
| spin_unlock_bh(&sc->sc_pcu_lock); |
| tasklet_enable(&sc->bcon_tasklet); |
| tasklet_enable(&sc->intr_tq); |
| |
| return r; |
| } |
| |
| 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; |
| |
| an->sc = sc; |
| an->sta = sta; |
| an->vif = vif; |
| memset(&an->key_idx, 0, sizeof(an->key_idx)); |
| |
| ath_tx_node_init(sc, an); |
| |
| ath_dynack_node_init(sc->sc_ah, an); |
| } |
| |
| static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta) |
| { |
| struct ath_node *an = (struct ath_node *)sta->drv_priv; |
| ath_tx_node_cleanup(sc, an); |
| |
| ath_dynack_node_deinit(sc->sc_ah, 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); |
| enum ath_reset_type type; |
| unsigned long flags; |
| u32 status = sc->intrstatus; |
| u32 rxmask; |
| |
| ath9k_ps_wakeup(sc); |
| spin_lock(&sc->sc_pcu_lock); |
| |
| if (status & ATH9K_INT_FATAL) { |
| type = RESET_TYPE_FATAL_INT; |
| ath9k_queue_reset(sc, type); |
| |
| /* |
| * Increment the ref. counter here so that |
| * interrupts are enabled in the reset routine. |
| */ |
| atomic_inc(&ah->intr_ref_cnt); |
| ath_dbg(common, RESET, "FATAL: Skipping interrupts\n"); |
| goto out; |
| } |
| |
| if ((ah->config.hw_hang_checks & HW_BB_WATCHDOG) && |
| (status & ATH9K_INT_BB_WATCHDOG)) { |
| spin_lock(&common->cc_lock); |
| ath_hw_cycle_counters_update(common); |
| ar9003_hw_bb_watchdog_dbg_info(ah); |
| spin_unlock(&common->cc_lock); |
| |
| if (ar9003_hw_bb_watchdog_check(ah)) { |
| type = RESET_TYPE_BB_WATCHDOG; |
| ath9k_queue_reset(sc, type); |
| |
| /* |
| * Increment the ref. counter here so that |
| * interrupts are enabled in the reset routine. |
| */ |
| atomic_inc(&ah->intr_ref_cnt); |
| ath_dbg(common, RESET, |
| "BB_WATCHDOG: Skipping interrupts\n"); |
| goto out; |
| } |
| } |
| |
| if (status & ATH9K_INT_GTT) { |
| sc->gtt_cnt++; |
| |
| if ((sc->gtt_cnt >= MAX_GTT_CNT) && !ath9k_hw_check_alive(ah)) { |
| type = RESET_TYPE_TX_GTT; |
| ath9k_queue_reset(sc, type); |
| atomic_inc(&ah->intr_ref_cnt); |
| ath_dbg(common, RESET, |
| "GTT: Skipping interrupts\n"); |
| goto out; |
| } |
| } |
| |
| spin_lock_irqsave(&sc->sc_pm_lock, flags); |
| if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) { |
| /* |
| * TSF sync does not look correct; remain awake to sync with |
| * the next Beacon. |
| */ |
| ath_dbg(common, PS, "TSFOOR - Sync with next Beacon\n"); |
| sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC; |
| } |
| spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
| |
| if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) |
| rxmask = (ATH9K_INT_RXHP | ATH9K_INT_RXLP | ATH9K_INT_RXEOL | |
| ATH9K_INT_RXORN); |
| else |
| rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN); |
| |
| if (status & rxmask) { |
| /* Check for high priority Rx first */ |
| if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) && |
| (status & ATH9K_INT_RXHP)) |
| ath_rx_tasklet(sc, 0, true); |
| |
| ath_rx_tasklet(sc, 0, false); |
| } |
| |
| if (status & ATH9K_INT_TX) { |
| if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) { |
| /* |
| * For EDMA chips, TX completion is enabled for the |
| * beacon queue, so if a beacon has been transmitted |
| * successfully after a GTT interrupt, the GTT counter |
| * gets reset to zero here. |
| */ |
| sc->gtt_cnt = 0; |
| |
| ath_tx_edma_tasklet(sc); |
| } else { |
| ath_tx_tasklet(sc); |
| } |
| |
| wake_up(&sc->tx_wait); |
| } |
| |
| if (status & ATH9K_INT_GENTIMER) |
| ath_gen_timer_isr(sc->sc_ah); |
| |
| ath9k_btcoex_handle_interrupt(sc, status); |
| |
| /* re-enable hardware interrupt */ |
| ath9k_hw_enable_interrupts(ah); |
| out: |
| 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_GTT | \ |
| 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; |
| u32 sync_cause = 0; |
| 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 (!ah || test_bit(ATH_OP_INVALID, &common->op_flags)) |
| return IRQ_NONE; |
| |
| /* shared irq, not for us */ |
| |
| if (!ath9k_hw_intrpend(ah)) |
| return IRQ_NONE; |
| |
| if (test_bit(ATH_OP_HW_RESET, &common->op_flags)) { |
| ath9k_hw_kill_interrupts(ah); |
| return IRQ_HANDLED; |
| } |
| |
| /* |
| * Figure out the reason(s) for the interrupt. Note |
| * that the hal returns a pseudo-ISR that may include |
| * bits we haven't explicitly enabled so we mask the |
| * value to insure we only process bits we requested. |
| */ |
| ath9k_hw_getisr(ah, &status, &sync_cause); /* NB: clears ISR too */ |
| ath9k_debug_sync_cause(sc, sync_cause); |
| status &= ah->imask; /* discard unasked-for bits */ |
| |
| /* |
| * If there are no status bits set, then this interrupt was not |
| * 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 interrupt is received, we have to reset the chip |
| * immediately. |
| */ |
| if (status & ATH9K_INT_FATAL) |
| goto chip_reset; |
| |
| if ((ah->config.hw_hang_checks & HW_BB_WATCHDOG) && |
| (status & ATH9K_INT_BB_WATCHDOG)) |
| goto chip_reset; |
| |
| #ifdef CONFIG_ATH9K_WOW |
| if (status & ATH9K_INT_BMISS) { |
| if (atomic_read(&sc->wow_sleep_proc_intr) == 0) { |
| atomic_inc(&sc->wow_got_bmiss_intr); |
| atomic_dec(&sc->wow_sleep_proc_intr); |
| } |
| } |
| #endif |
| |
| if (status & ATH9K_INT_SWBA) |
| tasklet_schedule(&sc->bcon_tasklet); |
| |
| if (status & ATH9K_INT_TXURN) |
| ath9k_hw_updatetxtriglevel(ah, true); |
| |
| if (status & ATH9K_INT_RXEOL) { |
| ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN); |
| ath9k_hw_set_interrupts(ah); |
| } |
| |
| if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) |
| if (status & ATH9K_INT_TIM_TIMER) { |
| if (ATH_DBG_WARN_ON_ONCE(sc->ps_idle)) |
| goto chip_reset; |
| /* Clear RxAbort bit so that we can |
| * receive frames */ |
| ath9k_setpower(sc, ATH9K_PM_AWAKE); |
| spin_lock(&sc->sc_pm_lock); |
| ath9k_hw_setrxabort(sc->sc_ah, 0); |
| sc->ps_flags |= PS_WAIT_FOR_BEACON; |
| spin_unlock(&sc->sc_pm_lock); |
| } |
| |
| 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 |
| } |
| |
| /* |
| * This function is called when a HW reset cannot be deferred |
| * and has to be immediate. |
| */ |
| int ath_reset(struct ath_softc *sc, struct ath9k_channel *hchan) |
| { |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| int r; |
| |
| set_bit(ATH_OP_HW_RESET, &common->op_flags); |
| |
| ath9k_ps_wakeup(sc); |
| r = ath_reset_internal(sc, hchan); |
| ath9k_ps_restore(sc); |
| |
| return r; |
| } |
| |
| /* |
| * When a HW reset can be deferred, it is added to the |
| * hw_reset_work workqueue, but we set ATH_OP_HW_RESET before |
| * queueing. |
| */ |
| void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type) |
| { |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| #ifdef CONFIG_ATH9K_DEBUGFS |
| RESET_STAT_INC(sc, type); |
| #endif |
| set_bit(ATH_OP_HW_RESET, &common->op_flags); |
| ieee80211_queue_work(sc->hw, &sc->hw_reset_work); |
| } |
| |
| void ath_reset_work(struct work_struct *work) |
| { |
| struct ath_softc *sc = container_of(work, struct ath_softc, hw_reset_work); |
| |
| ath9k_ps_wakeup(sc); |
| ath_reset_internal(sc, NULL); |
| ath9k_ps_restore(sc); |
| } |
| |
| /**********************/ |
| /* 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 = sc->cur_chan->chandef.chan; |
| struct ath_chanctx *ctx = sc->cur_chan; |
| 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_channel(hw, ah, &ctx->chandef); |
| sc->cur_chandef = hw->conf.chandef; |
| |
| /* 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); |
| ah->reset_power_on = false; |
| } |
| |
| /* 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; |
| else |
| ah->imask |= ATH9K_INT_RX; |
| |
| if (ah->config.hw_hang_checks & HW_BB_WATCHDOG) |
| ah->imask |= ATH9K_INT_BB_WATCHDOG; |
| |
| /* |
| * Enable GTT interrupts only for AR9003/AR9004 chips |
| * for now. |
| */ |
| if (AR_SREV_9300_20_OR_LATER(ah)) |
| ah->imask |= ATH9K_INT_GTT; |
| |
| if (ah->caps.hw_caps & ATH9K_HW_CAP_HT) |
| ah->imask |= ATH9K_INT_CST; |
| |
| ath_mci_enable(sc); |
| |
| clear_bit(ATH_OP_INVALID, &common->op_flags); |
| sc->sc_ah->is_monitoring = false; |
| |
| if (!ath_complete_reset(sc, false)) |
| ah->reset_power_on = false; |
| |
| 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); |
| |
| ath9k_hw_reset_tsf(ah); |
| |
| spin_unlock_bh(&sc->sc_pcu_lock); |
| |
| mutex_unlock(&sc->mutex); |
| |
| ath9k_ps_restore(sc); |
| |
| return 0; |
| } |
| |
| static void ath9k_tx(struct ieee80211_hw *hw, |
| struct ieee80211_tx_control *control, |
| 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; |
| unsigned long flags; |
| |
| 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); |
| } |
| } |
| |
| if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP)) { |
| /* |
| * We are using PS-Poll and mac80211 can request TX while in |
| * power save mode. Need to wake up hardware for the TX to be |
| * completed and if needed, also for RX of buffered frames. |
| */ |
| ath9k_ps_wakeup(sc); |
| spin_lock_irqsave(&sc->sc_pm_lock, flags); |
| if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) |
| ath9k_hw_setrxabort(sc->sc_ah, 0); |
| if (ieee80211_is_pspoll(hdr->frame_control)) { |
| ath_dbg(common, PS, |
| "Sending PS-Poll to pick a buffered frame\n"); |
| sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA; |
| } else { |
| 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 ps_flags bit is cleared. We are just dropping |
| * the ps_usecount here. |
| */ |
| spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
| ath9k_ps_restore(sc); |
| } |
| |
| /* |
| * Cannot tx while the hardware is in full sleep, it first needs a full |
| * chip reset to recover from that |
| */ |
| if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_FULL_SLEEP)) { |
| ath_err(common, "TX while HW is in FULL_SLEEP mode\n"); |
| goto exit; |
| } |
| |
| memset(&txctl, 0, sizeof(struct ath_tx_control)); |
| txctl.txq = sc->tx.txq_map[skb_get_queue_mapping(skb)]; |
| txctl.sta = control->sta; |
| |
| 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"); |
| TX_STAT_INC(txctl.txq->axq_qnum, txfailed); |
| goto exit; |
| } |
| |
| return; |
| exit: |
| ieee80211_free_txskb(hw, 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; |
| |
| ath9k_deinit_channel_context(sc); |
| |
| mutex_lock(&sc->mutex); |
| |
| ath_cancel_work(sc); |
| |
| if (test_bit(ATH_OP_INVALID, &common->op_flags)) { |
| 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); |
| |
| 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); |
| |
| if (sc->rx.frag) { |
| dev_kfree_skb_any(sc->rx.frag); |
| sc->rx.frag = NULL; |
| } |
| |
| if (!ah->curchan) |
| ah->curchan = ath9k_cmn_get_channel(hw, ah, |
| &sc->cur_chan->chandef); |
| |
| 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); |
| |
| set_bit(ATH_OP_INVALID, &common->op_flags); |
| sc->ps_idle = prev_idle; |
| |
| mutex_unlock(&sc->mutex); |
| |
| ath_dbg(common, CONFIG, "Driver halt\n"); |
| } |
| |
| static 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_vif_iter(struct ath9k_vif_iter_data *iter_data, |
| u8 *mac, struct ieee80211_vif *vif) |
| { |
| struct ath_vif *avp = (struct ath_vif *)vif->drv_priv; |
| int i; |
| |
| if (iter_data->has_hw_macaddr) { |
| for (i = 0; i < ETH_ALEN; i++) |
| iter_data->mask[i] &= |
| ~(iter_data->hw_macaddr[i] ^ mac[i]); |
| } else { |
| memcpy(iter_data->hw_macaddr, mac, ETH_ALEN); |
| iter_data->has_hw_macaddr = true; |
| } |
| |
| if (!vif->bss_conf.use_short_slot) |
| iter_data->slottime = ATH9K_SLOT_TIME_20; |
| |
| switch (vif->type) { |
| case NL80211_IFTYPE_AP: |
| iter_data->naps++; |
| break; |
| case NL80211_IFTYPE_STATION: |
| iter_data->nstations++; |
| if (avp->assoc && !iter_data->primary_sta) |
| iter_data->primary_sta = vif; |
| break; |
| case NL80211_IFTYPE_ADHOC: |
| iter_data->nadhocs++; |
| if (vif->bss_conf.enable_beacon) |
| iter_data->beacons = true; |
| break; |
| case NL80211_IFTYPE_MESH_POINT: |
| iter_data->nmeshes++; |
| if (vif->bss_conf.enable_beacon) |
| iter_data->beacons = true; |
| break; |
| case NL80211_IFTYPE_WDS: |
| iter_data->nwds++; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static void ath9k_update_bssid_mask(struct ath_softc *sc, |
| struct ath_chanctx *ctx, |
| struct ath9k_vif_iter_data *iter_data) |
| { |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| struct ath_vif *avp; |
| int i; |
| |
| if (!ath9k_is_chanctx_enabled()) |
| return; |
| |
| list_for_each_entry(avp, &ctx->vifs, list) { |
| if (ctx->nvifs_assigned != 1) |
| continue; |
| |
| if (!avp->vif->p2p || !iter_data->has_hw_macaddr) |
| continue; |
| |
| ether_addr_copy(common->curbssid, avp->bssid); |
| |
| /* perm_addr will be used as the p2p device address. */ |
| for (i = 0; i < ETH_ALEN; i++) |
| iter_data->mask[i] &= |
| ~(iter_data->hw_macaddr[i] ^ |
| sc->hw->wiphy->perm_addr[i]); |
| } |
| } |
| |
| /* Called with sc->mutex held. */ |
| void ath9k_calculate_iter_data(struct ath_softc *sc, |
| struct ath_chanctx *ctx, |
| struct ath9k_vif_iter_data *iter_data) |
| { |
| struct ath_vif *avp; |
| |
| /* |
| * Pick the MAC address of the first interface as the new hardware |
| * MAC address. The hardware will use it together with the BSSID mask |
| * when matching addresses. |
| */ |
| memset(iter_data, 0, sizeof(*iter_data)); |
| memset(&iter_data->mask, 0xff, ETH_ALEN); |
| iter_data->slottime = ATH9K_SLOT_TIME_9; |
| |
| list_for_each_entry(avp, &ctx->vifs, list) |
| ath9k_vif_iter(iter_data, avp->vif->addr, avp->vif); |
| |
| ath9k_update_bssid_mask(sc, ctx, iter_data); |
| } |
| |
| static void ath9k_set_assoc_state(struct ath_softc *sc, |
| struct ieee80211_vif *vif, bool changed) |
| { |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| struct ath_vif *avp = (struct ath_vif *)vif->drv_priv; |
| unsigned long flags; |
| |
| set_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags); |
| |
| ether_addr_copy(common->curbssid, avp->bssid); |
| common->curaid = avp->aid; |
| ath9k_hw_write_associd(sc->sc_ah); |
| |
| if (changed) { |
| common->last_rssi = ATH_RSSI_DUMMY_MARKER; |
| sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER; |
| |
| spin_lock_irqsave(&sc->sc_pm_lock, flags); |
| sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON; |
| spin_unlock_irqrestore(&sc->sc_pm_lock, flags); |
| } |
| |
| if (ath9k_hw_mci_is_enabled(sc->sc_ah)) |
| ath9k_mci_update_wlan_channels(sc, false); |
| |
| ath_dbg(common, CONFIG, |
| "Primary Station interface: %pM, BSSID: %pM\n", |
| vif->addr, common->curbssid); |
| } |
| |
| #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT |
| static void ath9k_set_offchannel_state(struct ath_softc *sc) |
| { |
| struct ath_hw *ah = sc->sc_ah; |
| struct ath_common *common = ath9k_hw_common(ah); |
| struct ieee80211_vif *vif = NULL; |
| |
| ath9k_ps_wakeup(sc); |
| |
| if (sc->offchannel.state < ATH_OFFCHANNEL_ROC_START) |
| vif = sc->offchannel.scan_vif; |
| else |
| vif = sc->offchannel.roc_vif; |
| |
| if (WARN_ON(!vif)) |
| goto exit; |
| |
| eth_zero_addr(common->curbssid); |
| eth_broadcast_addr(common->bssidmask); |
| memcpy(common->macaddr, vif->addr, ETH_ALEN); |
| common->curaid = 0; |
| ah->opmode = vif->type; |
| ah->imask &= ~ATH9K_INT_SWBA; |
| ah->imask &= ~ATH9K_INT_TSFOOR; |
| ah->slottime = ATH9K_SLOT_TIME_9; |
| |
| ath_hw_setbssidmask(common); |
| ath9k_hw_setopmode(ah); |
| ath9k_hw_write_associd(sc->sc_ah); |
| ath9k_hw_set_interrupts(ah); |
| ath9k_hw_init_global_settings(ah); |
| |
| exit: |
| ath9k_ps_restore(sc); |
| } |
| #endif |
| |
| /* Called with sc->mutex held. */ |
| void ath9k_calculate_summary_state(struct ath_softc *sc, |
| struct ath_chanctx *ctx) |
| { |
| struct ath_hw *ah = sc->sc_ah; |
| struct ath_common *common = ath9k_hw_common(ah); |
| struct ath9k_vif_iter_data iter_data; |
| struct ath_beacon_config *cur_conf; |
| |
| ath_chanctx_check_active(sc, ctx); |
| |
| if (ctx != sc->cur_chan) |
| return; |
| |
| #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT |
| if (ctx == &sc->offchannel.chan) |
| return ath9k_set_offchannel_state(sc); |
| #endif |
| |
| ath9k_ps_wakeup(sc); |
| ath9k_calculate_iter_data(sc, ctx, &iter_data); |
| |
| if (iter_data.has_hw_macaddr) |
| memcpy(common->macaddr, iter_data.hw_macaddr, ETH_ALEN); |
| |
| memcpy(common->bssidmask, iter_data.mask, ETH_ALEN); |
| ath_hw_setbssidmask(common); |
| |
| if (iter_data.naps > 0) { |
| cur_conf = &ctx->beacon; |
| ath9k_hw_set_tsfadjust(ah, true); |
| ah->opmode = NL80211_IFTYPE_AP; |
| if (cur_conf->enable_beacon) |
| iter_data.beacons = true; |
| } else { |
| ath9k_hw_set_tsfadjust(ah, false); |
| |
| if (iter_data.nmeshes) |
| ah->opmode = NL80211_IFTYPE_MESH_POINT; |
| else if (iter_data.nwds) |
| ah->opmode = NL80211_IFTYPE_AP; |
| else if (iter_data.nadhocs) |
| ah->opmode = NL80211_IFTYPE_ADHOC; |
| else |
| ah->opmode = NL80211_IFTYPE_STATION; |
| } |
| |
| ath9k_hw_setopmode(ah); |
| |
| ctx->switch_after_beacon = false; |
| if ((iter_data.nstations + iter_data.nadhocs + iter_data.nmeshes) > 0) |
| ah->imask |= ATH9K_INT_TSFOOR; |
| else { |
| ah->imask &= ~ATH9K_INT_TSFOOR; |
| if (iter_data.naps == 1 && iter_data.beacons) |
| ctx->switch_after_beacon = true; |
| } |
| |
| ah->imask &= ~ATH9K_INT_SWBA; |
| if (ah->opmode == NL80211_IFTYPE_STATION) { |
| bool changed = (iter_data.primary_sta != ctx->primary_sta); |
| |
| if (iter_data.primary_sta) { |
| iter_data.beacons = true; |
| ath9k_set_assoc_state(sc, iter_data.primary_sta, |
| changed); |
| ctx->primary_sta = iter_data.primary_sta; |
| } else { |
| ctx->primary_sta = NULL; |
| memset(common->curbssid, 0, ETH_ALEN); |
| common->curaid = 0; |
| ath9k_hw_write_associd(sc->sc_ah); |
| if (ath9k_hw_mci_is_enabled(sc->sc_ah)) |
| ath9k_mci_update_wlan_channels(sc, true); |
| } |
| } else if (iter_data.beacons) { |
| ah->imask |= ATH9K_INT_SWBA; |
| } |
| ath9k_hw_set_interrupts(ah); |
| |
| if (iter_data.beacons) |
| set_bit(ATH_OP_BEACONS, &common->op_flags); |
| else |
| clear_bit(ATH_OP_BEACONS, &common->op_flags); |
| |
| if (ah->slottime != iter_data.slottime) { |
| ah->slottime = iter_data.slottime; |
| ath9k_hw_init_global_settings(ah); |
| } |
| |
| if (iter_data.primary_sta) |
| set_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags); |
| else |
| clear_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags); |
| |
| ath_dbg(common, CONFIG, |
| "macaddr: %pM, bssid: %pM, bssidmask: %pM\n", |
| common->macaddr, common->curbssid, common->bssidmask); |
| |
| ath9k_ps_restore(sc); |
| } |
| |
| static void ath9k_assign_hw_queues(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif) |
| { |
| int i; |
| |
| for (i = 0; i < IEEE80211_NUM_ACS; i++) |
| vif->hw_queue[i] = i; |
| |
| if (vif->type == NL80211_IFTYPE_AP) |
| vif->cab_queue = hw->queues - 2; |
| else |
| vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; |
| } |
| |
| static int ath9k_add_interface(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_hw *ah = sc->sc_ah; |
| struct ath_common *common = ath9k_hw_common(ah); |
| struct ath_vif *avp = (void *)vif->drv_priv; |
| struct ath_node *an = &avp->mcast_node; |
| |
| mutex_lock(&sc->mutex); |
| |
| if (config_enabled(CONFIG_ATH9K_TX99)) { |
| if (sc->cur_chan->nvifs >= 1) { |
| mutex_unlock(&sc->mutex); |
| return -EOPNOTSUPP; |
| } |
| sc->tx99_vif = vif; |
| } |
| |
| ath_dbg(common, CONFIG, "Attach a VIF of type: %d\n", vif->type); |
| sc->cur_chan->nvifs++; |
| |
| if (ath9k_uses_beacons(vif->type)) |
| ath9k_beacon_assign_slot(sc, vif); |
| |
| avp->vif = vif; |
| if (!ath9k_is_chanctx_enabled()) { |
| avp->chanctx = sc->cur_chan; |
| list_add_tail(&avp->list, &avp->chanctx->vifs); |
| } |
| |
| ath9k_assign_hw_queues(hw, vif); |
| |
| an->sc = sc; |
| an->sta = NULL; |
| an->vif = vif; |
| an->no_ps_filter = true; |
| ath_tx_node_init(sc, an); |
| |
| mutex_unlock(&sc->mutex); |
| return 0; |
| } |
| |
| 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); |
| struct ath_vif *avp = (void *)vif->drv_priv; |
| |
| mutex_lock(&sc->mutex); |
| |
| if (config_enabled(CONFIG_ATH9K_TX99)) { |
| mutex_unlock(&sc->mutex); |
| return -EOPNOTSUPP; |
| } |
| |
| ath_dbg(common, CONFIG, "Change Interface\n"); |
| |
| if (ath9k_uses_beacons(vif->type)) |
| ath9k_beacon_remove_slot(sc, vif); |
| |
| vif->type = new_type; |
| vif->p2p = p2p; |
| |
| if (ath9k_uses_beacons(vif->type)) |
| ath9k_beacon_assign_slot(sc, vif); |
| |
| ath9k_assign_hw_queues(hw, vif); |
| ath9k_calculate_summary_state(sc, avp->chanctx); |
| |
| mutex_unlock(&sc->mutex); |
| return 0; |
| } |
| |
| 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); |
| struct ath_vif *avp = (void *)vif->drv_priv; |
| |
| ath_dbg(common, CONFIG, "Detach Interface\n"); |
| |
| mutex_lock(&sc->mutex); |
| |
| ath9k_p2p_remove_vif(sc, vif); |
| |
| sc->cur_chan->nvifs--; |
| sc->tx99_vif = NULL; |
| if (!ath9k_is_chanctx_enabled()) |
| list_del(&avp->list); |
| |
| if (ath9k_uses_beacons(vif->type)) |
| ath9k_beacon_remove_slot(sc, vif); |
| |
| ath_tx_node_cleanup(sc, &avp->mcast_node); |
| |
| mutex_unlock(&sc->mutex); |
| } |
| |
| static void ath9k_enable_ps(struct ath_softc *sc) |
| { |
| struct ath_hw *ah = sc->sc_ah; |
| struct ath_common *common = ath9k_hw_common(ah); |
| |
| if (config_enabled(CONFIG_ATH9K_TX99)) |
| return; |
| |
| 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); |
| } |
| ath_dbg(common, PS, "PowerSave enabled\n"); |
| } |
| |
| static void ath9k_disable_ps(struct ath_softc *sc) |
| { |
| struct ath_hw *ah = sc->sc_ah; |
| struct ath_common *common = ath9k_hw_common(ah); |
| |
| if (config_enabled(CONFIG_ATH9K_TX99)) |
| return; |
| |
| sc->ps_enabled = false; |
| ath9k_hw_setpower(ah, ATH9K_PM_AWAKE); |
| if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) { |
| ath9k_hw_setrxabort(ah, 0); |
| sc->ps_flags &= ~(PS_WAIT_FOR_BEACON | |
| PS_WAIT_FOR_CAB | |
| PS_WAIT_FOR_PSPOLL_DATA | |
| PS_WAIT_FOR_TX_ACK); |
| if (ah->imask & ATH9K_INT_TIM_TIMER) { |
| ah->imask &= ~ATH9K_INT_TIM_TIMER; |
| ath9k_hw_set_interrupts(ah); |
| } |
| } |
| ath_dbg(common, PS, "PowerSave disabled\n"); |
| } |
| |
| static 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; |
| struct ath_chanctx *ctx = sc->cur_chan; |
| |
| 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); |
| ath9k_stop_btcoex(sc); |
| } else { |
| ath9k_start_btcoex(sc); |
| /* |
| * The chip needs a reset to properly wake up from |
| * full sleep |
| */ |
| ath_chanctx_set_channel(sc, ctx, &ctx->chandef); |
| } |
| } |
| |
| /* |
| * 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 (!ath9k_is_chanctx_enabled() && (changed & IEEE80211_CONF_CHANGE_CHANNEL)) { |
| ctx->offchannel = !!(conf->flags & IEEE80211_CONF_OFFCHANNEL); |
| ath_chanctx_set_channel(sc, ctx, &hw->conf.chandef); |
| } |
| |
| if (changed & IEEE80211_CONF_CHANGE_POWER) { |
| ath_dbg(common, CONFIG, "Set power: %d\n", conf->power_level); |
| sc->cur_chan->txpower = 2 * conf->power_level; |
| ath9k_cmn_update_txpow(ah, sc->cur_chan->cur_txpower, |
| sc->cur_chan->txpower, |
| &sc->cur_chan->cur_txpower); |
| } |
| |
| 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; |
| |
| spin_lock_bh(&sc->chan_lock); |
| sc->cur_chan->rxfilter = *total_flags; |
| spin_unlock_bh(&sc->chan_lock); |
| |
| 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 = { }; |
| int key; |
| |
| ath_node_attach(sc, sta, vif); |
| |
| if (vif->type != NL80211_IFTYPE_AP && |
| vif->type != NL80211_IFTYPE_AP_VLAN) |
| return 0; |
| |
| key = ath_key_config(common, vif, sta, &ps_key); |
| if (key > 0) { |
| an->ps_key = key; |
| an->key_idx[0] = key; |
| } |
| |
| return 0; |
| } |
| |
| static void ath9k_del_ps_key(struct ath_softc *sc, |
| struct ieee80211_vif *vif, |
| 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); |
| an->ps_key = 0; |
| an->key_idx[0] = 0; |
| } |
| |
| static int ath9k_sta_remove(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_sta *sta) |
| { |
| struct ath_softc *sc = hw->priv; |
| |
| ath9k_del_ps_key(sc, vif, sta); |
| ath_node_detach(sc, sta); |
| |
| return 0; |
| } |
| |
| static int ath9k_sta_state(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_sta *sta, |
| enum ieee80211_sta_state old_state, |
| enum ieee80211_sta_state new_state) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| int ret = 0; |
| |
| if (old_state == IEEE80211_STA_AUTH && |
| new_state == IEEE80211_STA_ASSOC) { |
| ret = ath9k_sta_add(hw, vif, sta); |
| ath_dbg(common, CONFIG, |
| "Add station: %pM\n", sta->addr); |
| } else if (old_state == IEEE80211_STA_ASSOC && |
| new_state == IEEE80211_STA_AUTH) { |
| ret = ath9k_sta_remove(hw, vif, sta); |
| ath_dbg(common, CONFIG, |
| "Remove station: %pM\n", sta->addr); |
| } |
| |
| if (ath9k_is_chanctx_enabled()) { |
| if (vif->type == NL80211_IFTYPE_STATION) { |
| if (old_state == IEEE80211_STA_ASSOC && |
| new_state == IEEE80211_STA_AUTHORIZED) |
| ath_chanctx_event(sc, vif, |
| ATH_CHANCTX_EVENT_AUTHORIZED); |
| } |
| } |
| |
| return ret; |
| } |
| |
| static void ath9k_sta_set_tx_filter(struct ath_hw *ah, |
| struct ath_node *an, |
| bool set) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(an->key_idx); i++) { |
| if (!an->key_idx[i]) |
| continue; |
| ath9k_hw_set_tx_filter(ah, an->key_idx[i], set); |
| } |
| } |
| |
| static void ath9k_sta_notify(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| enum sta_notify_cmd cmd, |
| struct ieee80211_sta *sta) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_node *an = (struct ath_node *) sta->drv_priv; |
| |
| switch (cmd) { |
| case STA_NOTIFY_SLEEP: |
| an->sleeping = true; |
| ath_tx_aggr_sleep(sta, sc, an); |
| ath9k_sta_set_tx_filter(sc->sc_ah, an, true); |
| break; |
| case STA_NOTIFY_AWAKE: |
| ath9k_sta_set_tx_filter(sc->sc_ah, an, false); |
| an->sleeping = false; |
| ath_tx_aggr_wakeup(sc, an); |
| break; |
| } |
| } |
| |
| static int ath9k_conf_tx(struct ieee80211_hw *hw, |
| 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 >= IEEE80211_NUM_ACS) |
| return 0; |
| |
| txq = sc->tx.txq_map[queue]; |
| |
| ath9k_ps_wakeup(sc); |
| mutex_lock(&sc->mutex); |
| |
| memset(&qi, 0, sizeof(struct ath9k_tx_queue_info)); |
| |
| qi.tqi_aifs = params->aifs; |
| qi.tqi_cwmin = params->cw_min; |
| qi.tqi_cwmax = params->cw_max; |
| qi.tqi_burstTime = params->txop * 32; |
| |
| 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); |
| |
| ath_update_max_aggr_framelen(sc, queue, qi.tqi_burstTime); |
| ret = ath_txq_update(sc, txq->axq_qnum, &qi); |
| if (ret) |
| ath_err(common, "TXQ Update failed\n"); |
| |
| 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); |
| struct ath_node *an = NULL; |
| int ret = 0, i; |
| |
| 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 %d\n", cmd); |
| if (sta) |
| an = (struct ath_node *)sta->drv_priv; |
| |
| switch (cmd) { |
| case SET_KEY: |
| if (sta) |
| ath9k_del_ps_key(sc, vif, sta); |
| |
| key->hw_key_idx = 0; |
| ret = ath_key_config(common, vif, sta, key); |
| if (ret >= 0) { |
| key->hw_key_idx = ret; |
| /* push IV and Michael MIC generation to stack */ |
| key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
| if (key->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_TX; |
| ret = 0; |
| } |
| if (an && key->hw_key_idx) { |
| for (i = 0; i < ARRAY_SIZE(an->key_idx); i++) { |
| if (an->key_idx[i]) |
| continue; |
| an->key_idx[i] = key->hw_key_idx; |
| break; |
| } |
| WARN_ON(i == ARRAY_SIZE(an->key_idx)); |
| } |
| break; |
| case DISABLE_KEY: |
| ath_key_delete(common, key); |
| if (an) { |
| for (i = 0; i < ARRAY_SIZE(an->key_idx); i++) { |
| if (an->key_idx[i] != key->hw_key_idx) |
| continue; |
| an->key_idx[i] = 0; |
| break; |
| } |
| } |
| key->hw_key_idx = 0; |
| break; |
| default: |
| ret = -EINVAL; |
| } |
| |
| 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) |
| { |
| #define CHECK_ANI \ |
| (BSS_CHANGED_ASSOC | \ |
| BSS_CHANGED_IBSS | \ |
| BSS_CHANGED_BEACON_ENABLED) |
| |
| struct ath_softc *sc = hw->priv; |
| struct ath_hw *ah = sc->sc_ah; |
| struct ath_common *common = ath9k_hw_common(ah); |
| struct ath_vif *avp = (void *)vif->drv_priv; |
| int slottime; |
| |
| ath9k_ps_wakeup(sc); |
| mutex_lock(&sc->mutex); |
| |
| if (changed & BSS_CHANGED_ASSOC) { |
| ath_dbg(common, CONFIG, "BSSID %pM Changed ASSOC %d\n", |
| bss_conf->bssid, bss_conf->assoc); |
| |
| memcpy(avp->bssid, bss_conf->bssid, ETH_ALEN); |
| avp->aid = bss_conf->aid; |
| avp->assoc = bss_conf->assoc; |
| |
| ath9k_calculate_summary_state(sc, avp->chanctx); |
| } |
| |
| if (changed & BSS_CHANGED_IBSS) { |
| memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); |
| common->curaid = bss_conf->aid; |
| ath9k_hw_write_associd(sc->sc_ah); |
| } |
| |
| if ((changed & BSS_CHANGED_BEACON_ENABLED) || |
| (changed & BSS_CHANGED_BEACON_INT) || |
| (changed & BSS_CHANGED_BEACON_INFO)) { |
| ath9k_beacon_config(sc, vif, changed); |
| if (changed & BSS_CHANGED_BEACON_ENABLED) |
| ath9k_calculate_summary_state(sc, avp->chanctx); |
| } |
| |
| if ((avp->chanctx == sc->cur_chan) && |
| (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); |
| } |
| } |
| |
| if (changed & BSS_CHANGED_P2P_PS) |
| ath9k_p2p_bss_info_changed(sc, vif); |
| |
| if (changed & CHECK_ANI) |
| ath_check_ani(sc); |
| |
| mutex_unlock(&sc->mutex); |
| ath9k_ps_restore(sc); |
| |
| #undef CHECK_ANI |
| } |
| |
| static u64 ath9k_get_tsf(struct ieee80211_hw *hw, 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; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| bool flush = false; |
| int ret = 0; |
| |
| mutex_lock(&sc->mutex); |
| |
| switch (action) { |
| case IEEE80211_AMPDU_RX_START: |
| break; |
| case IEEE80211_AMPDU_RX_STOP: |
| break; |
| case IEEE80211_AMPDU_TX_START: |
| if (ath9k_is_chanctx_enabled()) { |
| if (test_bit(ATH_OP_SCANNING, &common->op_flags)) { |
| ret = -EBUSY; |
| break; |
| } |
| } |
| 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_FLUSH: |
| case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: |
| flush = true; |
| case IEEE80211_AMPDU_TX_STOP_CONT: |
| ath9k_ps_wakeup(sc); |
| ath_tx_aggr_stop(sc, sta, tid); |
| if (!flush) |
| 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"); |
| } |
| |
| mutex_unlock(&sc->mutex); |
| |
| 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; |
| int pos; |
| |
| if (config_enabled(CONFIG_ATH9K_TX99)) |
| return -EOPNOTSUPP; |
| |
| spin_lock_bh(&common->cc_lock); |
| if (idx == 0) |
| ath_update_survey_stats(sc); |
| |
| sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ]; |
| if (sband && idx >= sband->n_channels) { |
| idx -= sband->n_channels; |
| sband = NULL; |
| } |
| |
| if (!sband) |
| sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ]; |
| |
| if (!sband || idx >= sband->n_channels) { |
| spin_unlock_bh(&common->cc_lock); |
| return -ENOENT; |
| } |
| |
| chan = &sband->channels[idx]; |
| pos = chan->hw_value; |
| memcpy(survey, &sc->survey[pos], sizeof(*survey)); |
| survey->channel = chan; |
| spin_unlock_bh(&common->cc_lock); |
| |
| return 0; |
| } |
| |
| static void ath9k_enable_dynack(struct ath_softc *sc) |
| { |
| #ifdef CONFIG_ATH9K_DYNACK |
| u32 rfilt; |
| struct ath_hw *ah = sc->sc_ah; |
| |
| ath_dynack_reset(ah); |
| |
| ah->dynack.enabled = true; |
| rfilt = ath_calcrxfilter(sc); |
| ath9k_hw_setrxfilter(ah, rfilt); |
| #endif |
| } |
| |
| static void ath9k_set_coverage_class(struct ieee80211_hw *hw, |
| s16 coverage_class) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_hw *ah = sc->sc_ah; |
| |
| if (config_enabled(CONFIG_ATH9K_TX99)) |
| return; |
| |
| mutex_lock(&sc->mutex); |
| |
| if (coverage_class >= 0) { |
| ah->coverage_class = coverage_class; |
| if (ah->dynack.enabled) { |
| u32 rfilt; |
| |
| ah->dynack.enabled = false; |
| rfilt = ath_calcrxfilter(sc); |
| ath9k_hw_setrxfilter(ah, rfilt); |
| } |
| ath9k_ps_wakeup(sc); |
| ath9k_hw_init_global_settings(ah); |
| ath9k_ps_restore(sc); |
| } else if (!ah->dynack.enabled) { |
| ath9k_enable_dynack(sc); |
| } |
| |
| mutex_unlock(&sc->mutex); |
| } |
| |
| static bool ath9k_has_tx_pending(struct ath_softc *sc, |
| bool sw_pending) |
| { |
| int i, npend = 0; |
| |
| 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], |
| sw_pending); |
| if (npend) |
| break; |
| } |
| |
| return !!npend; |
| } |
| |
| static void ath9k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| u32 queues, bool drop) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| |
| if (ath9k_is_chanctx_enabled()) { |
| if (!test_bit(ATH_OP_MULTI_CHANNEL, &common->op_flags)) |
| goto flush; |
| |
| /* |
| * If MCC is active, extend the flush timeout |
| * and wait for the HW/SW queues to become |
| * empty. This needs to be done outside the |
| * sc->mutex lock to allow the channel scheduler |
| * to switch channel contexts. |
| * |
| * The vif queues have been stopped in mac80211, |
| * so there won't be any incoming frames. |
| */ |
| __ath9k_flush(hw, queues, drop, true, true); |
| return; |
| } |
| flush: |
| mutex_lock(&sc->mutex); |
| __ath9k_flush(hw, queues, drop, true, false); |
| mutex_unlock(&sc->mutex); |
| } |
| |
| void __ath9k_flush(struct ieee80211_hw *hw, u32 queues, bool drop, |
| bool sw_pending, bool timeout_override) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_hw *ah = sc->sc_ah; |
| struct ath_common *common = ath9k_hw_common(ah); |
| int timeout; |
| bool drain_txq; |
| |
| cancel_delayed_work_sync(&sc->tx_complete_work); |
| |
| if (ah->ah_flags & AH_UNPLUGGED) { |
| ath_dbg(common, ANY, "Device has been unplugged!\n"); |
| return; |
| } |
| |
| if (test_bit(ATH_OP_INVALID, &common->op_flags)) { |
| ath_dbg(common, ANY, "Device not present\n"); |
| return; |
| } |
| |
| spin_lock_bh(&sc->chan_lock); |
| if (timeout_override) |
| timeout = HZ / 5; |
| else |
| timeout = sc->cur_chan->flush_timeout; |
| spin_unlock_bh(&sc->chan_lock); |
| |
| ath_dbg(common, CHAN_CTX, |
| "Flush timeout: %d\n", jiffies_to_msecs(timeout)); |
| |
| if (wait_event_timeout(sc->tx_wait, !ath9k_has_tx_pending(sc, sw_pending), |
| timeout) > 0) |
| drop = false; |
| |
| if (drop) { |
| ath9k_ps_wakeup(sc); |
| spin_lock_bh(&sc->sc_pcu_lock); |
| drain_txq = ath_drain_all_txq(sc); |
| spin_unlock_bh(&sc->sc_pcu_lock); |
| |
| if (!drain_txq) |
| ath_reset(sc, NULL); |
| |
| ath9k_ps_restore(sc); |
| } |
| |
| ieee80211_queue_delayed_work(hw, &sc->tx_complete_work, 0); |
| } |
| |
| static bool ath9k_tx_frames_pending(struct ieee80211_hw *hw) |
| { |
| struct ath_softc *sc = hw->priv; |
| |
| return ath9k_has_tx_pending(sc, true); |
| } |
| |
| static int ath9k_tx_last_beacon(struct ieee80211_hw *hw) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_hw *ah = sc->sc_ah; |
| struct ieee80211_vif *vif; |
| struct ath_vif *avp; |
| struct ath_buf *bf; |
| struct ath_tx_status ts; |
| bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA); |
| int status; |
| |
| vif = sc->beacon.bslot[0]; |
| if (!vif) |
| return 0; |
| |
| if (!vif->bss_conf.enable_beacon) |
| return 0; |
| |
| avp = (void *)vif->drv_priv; |
| |
| if (!sc->beacon.tx_processed && !edma) { |
| tasklet_disable(&sc->bcon_tasklet); |
| |
| bf = avp->av_bcbuf; |
| if (!bf || !bf->bf_mpdu) |
| goto skip; |
| |
| status = ath9k_hw_txprocdesc(ah, bf->bf_desc, &ts); |
| if (status == -EINPROGRESS) |
| goto skip; |
| |
| sc->beacon.tx_processed = true; |
| sc->beacon.tx_last = !(ts.ts_status & ATH9K_TXERR_MASK); |
| |
| skip: |
| tasklet_enable(&sc->bcon_tasklet); |
| } |
| |
| return sc->beacon.tx_last; |
| } |
| |
| static int ath9k_get_stats(struct ieee80211_hw *hw, |
| struct ieee80211_low_level_stats *stats) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_hw *ah = sc->sc_ah; |
| struct ath9k_mib_stats *mib_stats = &ah->ah_mibStats; |
| |
| stats->dot11ACKFailureCount = mib_stats->ackrcv_bad; |
| stats->dot11RTSFailureCount = mib_stats->rts_bad; |
| stats->dot11FCSErrorCount = mib_stats->fcs_bad; |
| stats->dot11RTSSuccessCount = mib_stats->rts_good; |
| return 0; |
| } |
| |
| static u32 fill_chainmask(u32 cap, u32 new) |
| { |
| u32 filled = 0; |
| int i; |
| |
| for (i = 0; cap && new; i++, cap >>= 1) { |
| if (!(cap & BIT(0))) |
| continue; |
| |
| if (new & BIT(0)) |
| filled |= BIT(i); |
| |
| new >>= 1; |
| } |
| |
| return filled; |
| } |
| |
| static bool validate_antenna_mask(struct ath_hw *ah, u32 val) |
| { |
| if (AR_SREV_9300_20_OR_LATER(ah)) |
| return true; |
| |
| switch (val & 0x7) { |
| case 0x1: |
| case 0x3: |
| case 0x7: |
| return true; |
| case 0x2: |
| return (ah->caps.rx_chainmask == 1); |
| default: |
| return false; |
| } |
| } |
| |
| static int ath9k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_hw *ah = sc->sc_ah; |
| |
| if (ah->caps.rx_chainmask != 1) |
| rx_ant |= tx_ant; |
| |
| if (!validate_antenna_mask(ah, rx_ant) || !tx_ant) |
| return -EINVAL; |
| |
| sc->ant_rx = rx_ant; |
| sc->ant_tx = tx_ant; |
| |
| if (ah->caps.rx_chainmask == 1) |
| return 0; |
| |
| /* AR9100 runs into calibration issues if not all rx chains are enabled */ |
| if (AR_SREV_9100(ah)) |
| ah->rxchainmask = 0x7; |
| else |
| ah->rxchainmask = fill_chainmask(ah->caps.rx_chainmask, rx_ant); |
| |
| ah->txchainmask = fill_chainmask(ah->caps.tx_chainmask, tx_ant); |
| ath9k_cmn_reload_chainmask(ah); |
| |
| return 0; |
| } |
| |
| static int ath9k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) |
| { |
| struct ath_softc *sc = hw->priv; |
| |
| *tx_ant = sc->ant_tx; |
| *rx_ant = sc->ant_rx; |
| return 0; |
| } |
| |
| static void ath9k_sw_scan_start(struct ieee80211_hw *hw) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| set_bit(ATH_OP_SCANNING, &common->op_flags); |
| } |
| |
| static void ath9k_sw_scan_complete(struct ieee80211_hw *hw) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| clear_bit(ATH_OP_SCANNING, &common->op_flags); |
| } |
| |
| #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT |
| |
| static int ath9k_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| struct ieee80211_scan_request *hw_req) |
| { |
| struct cfg80211_scan_request *req = &hw_req->req; |
| struct ath_softc *sc = hw->priv; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| int ret = 0; |
| |
| mutex_lock(&sc->mutex); |
| |
| if (WARN_ON(sc->offchannel.scan_req)) { |
| ret = -EBUSY; |
| goto out; |
| } |
| |
| ath9k_ps_wakeup(sc); |
| set_bit(ATH_OP_SCANNING, &common->op_flags); |
| sc->offchannel.scan_vif = vif; |
| sc->offchannel.scan_req = req; |
| sc->offchannel.scan_idx = 0; |
| |
| ath_dbg(common, CHAN_CTX, "HW scan request received on vif: %pM\n", |
| vif->addr); |
| |
| if (sc->offchannel.state == ATH_OFFCHANNEL_IDLE) { |
| ath_dbg(common, CHAN_CTX, "Starting HW scan\n"); |
| ath_offchannel_next(sc); |
| } |
| |
| out: |
| mutex_unlock(&sc->mutex); |
| |
| return ret; |
| } |
| |
| static void ath9k_cancel_hw_scan(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, CHAN_CTX, "Cancel HW scan on vif: %pM\n", vif->addr); |
| |
| mutex_lock(&sc->mutex); |
| del_timer_sync(&sc->offchannel.timer); |
| ath_scan_complete(sc, true); |
| mutex_unlock(&sc->mutex); |
| } |
| |
| static int ath9k_remain_on_channel(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_channel *chan, int duration, |
| enum ieee80211_roc_type type) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| int ret = 0; |
| |
| mutex_lock(&sc->mutex); |
| |
| if (WARN_ON(sc->offchannel.roc_vif)) { |
| ret = -EBUSY; |
| goto out; |
| } |
| |
| ath9k_ps_wakeup(sc); |
| sc->offchannel.roc_vif = vif; |
| sc->offchannel.roc_chan = chan; |
| sc->offchannel.roc_duration = duration; |
| |
| ath_dbg(common, CHAN_CTX, |
| "RoC request on vif: %pM, type: %d duration: %d\n", |
| vif->addr, type, duration); |
| |
| if (sc->offchannel.state == ATH_OFFCHANNEL_IDLE) { |
| ath_dbg(common, CHAN_CTX, "Starting RoC period\n"); |
| ath_offchannel_next(sc); |
| } |
| |
| out: |
| mutex_unlock(&sc->mutex); |
| |
| return ret; |
| } |
| |
| static int ath9k_cancel_remain_on_channel(struct ieee80211_hw *hw) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| |
| mutex_lock(&sc->mutex); |
| |
| ath_dbg(common, CHAN_CTX, "Cancel RoC\n"); |
| del_timer_sync(&sc->offchannel.timer); |
| |
| if (sc->offchannel.roc_vif) { |
| if (sc->offchannel.state >= ATH_OFFCHANNEL_ROC_START) |
| ath_roc_complete(sc, true); |
| } |
| |
| mutex_unlock(&sc->mutex); |
| |
| return 0; |
| } |
| |
| static int ath9k_add_chanctx(struct ieee80211_hw *hw, |
| struct ieee80211_chanctx_conf *conf) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| struct ath_chanctx *ctx, **ptr; |
| int pos; |
| |
| mutex_lock(&sc->mutex); |
| |
| ath_for_each_chanctx(sc, ctx) { |
| if (ctx->assigned) |
| continue; |
| |
| ptr = (void *) conf->drv_priv; |
| *ptr = ctx; |
| ctx->assigned = true; |
| pos = ctx - &sc->chanctx[0]; |
| ctx->hw_queue_base = pos * IEEE80211_NUM_ACS; |
| |
| ath_dbg(common, CHAN_CTX, |
| "Add channel context: %d MHz\n", |
| conf->def.chan->center_freq); |
| |
| ath_chanctx_set_channel(sc, ctx, &conf->def); |
| |
| mutex_unlock(&sc->mutex); |
| return 0; |
| } |
| |
| mutex_unlock(&sc->mutex); |
| return -ENOSPC; |
| } |
| |
| |
| static void ath9k_remove_chanctx(struct ieee80211_hw *hw, |
| struct ieee80211_chanctx_conf *conf) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| struct ath_chanctx *ctx = ath_chanctx_get(conf); |
| |
| mutex_lock(&sc->mutex); |
| |
| ath_dbg(common, CHAN_CTX, |
| "Remove channel context: %d MHz\n", |
| conf->def.chan->center_freq); |
| |
| ctx->assigned = false; |
| ctx->hw_queue_base = 0; |
| ath_chanctx_event(sc, NULL, ATH_CHANCTX_EVENT_UNASSIGN); |
| |
| mutex_unlock(&sc->mutex); |
| } |
| |
| static void ath9k_change_chanctx(struct ieee80211_hw *hw, |
| struct ieee80211_chanctx_conf *conf, |
| u32 changed) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| struct ath_chanctx *ctx = ath_chanctx_get(conf); |
| |
| mutex_lock(&sc->mutex); |
| ath_dbg(common, CHAN_CTX, |
| "Change channel context: %d MHz\n", |
| conf->def.chan->center_freq); |
| ath_chanctx_set_channel(sc, ctx, &conf->def); |
| mutex_unlock(&sc->mutex); |
| } |
| |
| static int ath9k_assign_vif_chanctx(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_chanctx_conf *conf) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| struct ath_vif *avp = (void *)vif->drv_priv; |
| struct ath_chanctx *ctx = ath_chanctx_get(conf); |
| int i; |
| |
| mutex_lock(&sc->mutex); |
| |
| ath_dbg(common, CHAN_CTX, |
| "Assign VIF (addr: %pM, type: %d, p2p: %d) to channel context: %d MHz\n", |
| vif->addr, vif->type, vif->p2p, |
| conf->def.chan->center_freq); |
| |
| avp->chanctx = ctx; |
| ctx->nvifs_assigned++; |
| list_add_tail(&avp->list, &ctx->vifs); |
| ath9k_calculate_summary_state(sc, ctx); |
| for (i = 0; i < IEEE80211_NUM_ACS; i++) |
| vif->hw_queue[i] = ctx->hw_queue_base + i; |
| |
| mutex_unlock(&sc->mutex); |
| |
| return 0; |
| } |
| |
| static void ath9k_unassign_vif_chanctx(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_chanctx_conf *conf) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| struct ath_vif *avp = (void *)vif->drv_priv; |
| struct ath_chanctx *ctx = ath_chanctx_get(conf); |
| int ac; |
| |
| mutex_lock(&sc->mutex); |
| |
| ath_dbg(common, CHAN_CTX, |
| "Remove VIF (addr: %pM, type: %d, p2p: %d) from channel context: %d MHz\n", |
| vif->addr, vif->type, vif->p2p, |
| conf->def.chan->center_freq); |
| |
| avp->chanctx = NULL; |
| ctx->nvifs_assigned--; |
| list_del(&avp->list); |
| ath9k_calculate_summary_state(sc, ctx); |
| for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
| vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE; |
| |
| mutex_unlock(&sc->mutex); |
| } |
| |
| static void ath9k_mgd_prepare_tx(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
| struct ath_vif *avp = (struct ath_vif *) vif->drv_priv; |
| struct ath_beacon_config *cur_conf; |
| struct ath_chanctx *go_ctx; |
| unsigned long timeout; |
| bool changed = false; |
| u32 beacon_int; |
| |
| if (!test_bit(ATH_OP_MULTI_CHANNEL, &common->op_flags)) |
| return; |
| |
| if (!avp->chanctx) |
| return; |
| |
| mutex_lock(&sc->mutex); |
| |
| spin_lock_bh(&sc->chan_lock); |
| if (sc->next_chan || (sc->cur_chan != avp->chanctx)) |
| changed = true; |
| spin_unlock_bh(&sc->chan_lock); |
| |
| if (!changed) |
| goto out; |
| |
| if (test_bit(ATH_OP_SCANNING, &common->op_flags)) { |
| ath_dbg(common, CHAN_CTX, |
| "%s: Aborting HW scan\n", __func__); |
| |
| mutex_unlock(&sc->mutex); |
| |
| del_timer_sync(&sc->offchannel.timer); |
| ath_scan_complete(sc, true); |
| flush_work(&sc->chanctx_work); |
| |
| mutex_lock(&sc->mutex); |
| } |
| |
| go_ctx = ath_is_go_chanctx_present(sc); |
| |
| if (go_ctx) { |
| /* |
| * Wait till the GO interface gets a chance |
| * to send out an NoA. |
| */ |
| spin_lock_bh(&sc->chan_lock); |
| sc->sched.mgd_prepare_tx = true; |
| cur_conf = &go_ctx->beacon; |
| beacon_int = TU_TO_USEC(cur_conf->beacon_interval); |
| spin_unlock_bh(&sc->chan_lock); |
| |
| timeout = usecs_to_jiffies(beacon_int); |
| init_completion(&sc->go_beacon); |
| |
| if (wait_for_completion_timeout(&sc->go_beacon, |
| timeout) == 0) |
| ath_dbg(common, CHAN_CTX, |
| "Failed to send new NoA\n"); |
| } |
| |
| ath_dbg(common, CHAN_CTX, |
| "%s: Set chanctx state to FORCE_ACTIVE for vif: %pM\n", |
| __func__, vif->addr); |
| |
| spin_lock_bh(&sc->chan_lock); |
| sc->next_chan = avp->chanctx; |
| sc->sched.state = ATH_CHANCTX_STATE_FORCE_ACTIVE; |
| spin_unlock_bh(&sc->chan_lock); |
| |
| ath_chanctx_set_next(sc, true); |
| out: |
| mutex_unlock(&sc->mutex); |
| } |
| |
| void ath9k_fill_chanctx_ops(void) |
| { |
| if (!ath9k_is_chanctx_enabled()) |
| return; |
| |
| ath9k_ops.hw_scan = ath9k_hw_scan; |
| ath9k_ops.cancel_hw_scan = ath9k_cancel_hw_scan; |
| ath9k_ops.remain_on_channel = ath9k_remain_on_channel; |
| ath9k_ops.cancel_remain_on_channel = ath9k_cancel_remain_on_channel; |
| ath9k_ops.add_chanctx = ath9k_add_chanctx; |
| ath9k_ops.remove_chanctx = ath9k_remove_chanctx; |
| ath9k_ops.change_chanctx = ath9k_change_chanctx; |
| ath9k_ops.assign_vif_chanctx = ath9k_assign_vif_chanctx; |
| ath9k_ops.unassign_vif_chanctx = ath9k_unassign_vif_chanctx; |
| ath9k_ops.mgd_prepare_tx = ath9k_mgd_prepare_tx; |
| } |
| |
| #endif |
| |
| static int ath9k_get_txpower(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| int *dbm) |
| { |
| struct ath_softc *sc = hw->priv; |
| struct ath_vif *avp = (void *)vif->drv_priv; |
| |
| mutex_lock(&sc->mutex); |
| if (avp->chanctx) |
| *dbm = avp->chanctx->cur_txpower; |
| else |
| *dbm = sc->cur_chan->cur_txpower; |
| mutex_unlock(&sc->mutex); |
| |
| *dbm /= 2; |
| |
| 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_state = ath9k_sta_state, |
| .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, |
| .release_buffered_frames = ath9k_release_buffered_frames, |
| .get_stats = ath9k_get_stats, |
| .set_antenna = ath9k_set_antenna, |
| .get_antenna = ath9k_get_antenna, |
| |
| #ifdef CONFIG_ATH9K_WOW |
| .suspend = ath9k_suspend, |
| .resume = ath9k_resume, |
| .set_wakeup = ath9k_set_wakeup, |
| #endif |
| |
| #ifdef CONFIG_ATH9K_DEBUGFS |
| .get_et_sset_count = ath9k_get_et_sset_count, |
| .get_et_stats = ath9k_get_et_stats, |
| .get_et_strings = ath9k_get_et_strings, |
| #endif |
| |
| #if defined(CONFIG_MAC80211_DEBUGFS) && defined(CONFIG_ATH9K_STATION_STATISTICS) |
| .sta_add_debugfs = ath9k_sta_add_debugfs, |
| #endif |
| .sw_scan_start = ath9k_sw_scan_start, |
| .sw_scan_complete = ath9k_sw_scan_complete, |
| .get_txpower = ath9k_get_txpower, |
| }; |