2 * Copyright (c) 2008-2011 Atheros Communications Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <linux/nl80211.h>
18 #include <linux/delay.h>
22 static void ath9k_set_assoc_state(struct ath_softc *sc,
23 struct ieee80211_vif *vif);
25 u8 ath9k_parse_mpdudensity(u8 mpdudensity)
28 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
29 * 0 for no restriction
38 switch (mpdudensity) {
44 /* Our lower layer calculations limit our precision to
60 static bool ath9k_has_pending_frames(struct ath_softc *sc, struct ath_txq *txq)
64 spin_lock_bh(&txq->axq_lock);
66 if (txq->axq_depth || !list_empty(&txq->axq_acq))
69 spin_unlock_bh(&txq->axq_lock);
73 static bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode)
78 spin_lock_irqsave(&sc->sc_pm_lock, flags);
79 ret = ath9k_hw_setpower(sc->sc_ah, mode);
80 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
85 void ath9k_ps_wakeup(struct ath_softc *sc)
87 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
89 enum ath9k_power_mode power_mode;
91 spin_lock_irqsave(&sc->sc_pm_lock, flags);
92 if (++sc->ps_usecount != 1)
95 power_mode = sc->sc_ah->power_mode;
96 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
99 * While the hardware is asleep, the cycle counters contain no
100 * useful data. Better clear them now so that they don't mess up
101 * survey data results.
103 if (power_mode != ATH9K_PM_AWAKE) {
104 spin_lock(&common->cc_lock);
105 ath_hw_cycle_counters_update(common);
106 memset(&common->cc_survey, 0, sizeof(common->cc_survey));
107 memset(&common->cc_ani, 0, sizeof(common->cc_ani));
108 spin_unlock(&common->cc_lock);
112 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
115 void ath9k_ps_restore(struct ath_softc *sc)
117 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
118 enum ath9k_power_mode mode;
122 spin_lock_irqsave(&sc->sc_pm_lock, flags);
123 if (--sc->ps_usecount != 0)
127 ath9k_hw_setrxabort(sc->sc_ah, 1);
128 ath9k_hw_stopdmarecv(sc->sc_ah, &reset);
129 mode = ATH9K_PM_FULL_SLEEP;
130 } else if (sc->ps_enabled &&
131 !(sc->ps_flags & (PS_WAIT_FOR_BEACON |
133 PS_WAIT_FOR_PSPOLL_DATA |
134 PS_WAIT_FOR_TX_ACK))) {
135 mode = ATH9K_PM_NETWORK_SLEEP;
136 if (ath9k_hw_btcoex_is_enabled(sc->sc_ah))
137 ath9k_btcoex_stop_gen_timer(sc);
142 spin_lock(&common->cc_lock);
143 ath_hw_cycle_counters_update(common);
144 spin_unlock(&common->cc_lock);
146 ath9k_hw_setpower(sc->sc_ah, mode);
149 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
152 static void __ath_cancel_work(struct ath_softc *sc)
154 cancel_work_sync(&sc->paprd_work);
155 cancel_work_sync(&sc->hw_check_work);
156 cancel_delayed_work_sync(&sc->tx_complete_work);
157 cancel_delayed_work_sync(&sc->hw_pll_work);
159 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
160 if (ath9k_hw_mci_is_enabled(sc->sc_ah))
161 cancel_work_sync(&sc->mci_work);
165 static void ath_cancel_work(struct ath_softc *sc)
167 __ath_cancel_work(sc);
168 cancel_work_sync(&sc->hw_reset_work);
171 static void ath_restart_work(struct ath_softc *sc)
173 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
175 if (AR_SREV_9340(sc->sc_ah) || AR_SREV_9485(sc->sc_ah) ||
176 AR_SREV_9550(sc->sc_ah))
177 ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work,
178 msecs_to_jiffies(ATH_PLL_WORK_INTERVAL));
180 ath_start_rx_poll(sc, 3);
184 static bool ath_prepare_reset(struct ath_softc *sc, bool retry_tx, bool flush)
186 struct ath_hw *ah = sc->sc_ah;
189 ieee80211_stop_queues(sc->hw);
191 sc->hw_busy_count = 0;
193 del_timer_sync(&sc->rx_poll_timer);
195 ath9k_debug_samp_bb_mac(sc);
196 ath9k_hw_disable_interrupts(ah);
198 if (!ath_stoprecv(sc))
201 if (!ath_drain_all_txq(sc, retry_tx))
205 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
206 ath_rx_tasklet(sc, 1, true);
207 ath_rx_tasklet(sc, 1, false);
215 static bool ath_complete_reset(struct ath_softc *sc, bool start)
217 struct ath_hw *ah = sc->sc_ah;
218 struct ath_common *common = ath9k_hw_common(ah);
221 if (ath_startrecv(sc) != 0) {
222 ath_err(common, "Unable to restart recv logic\n");
226 ath9k_cmn_update_txpow(ah, sc->curtxpow,
227 sc->config.txpowlimit, &sc->curtxpow);
229 clear_bit(SC_OP_HW_RESET, &sc->sc_flags);
230 ath9k_hw_set_interrupts(ah);
231 ath9k_hw_enable_interrupts(ah);
233 if (!(sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) && start) {
234 if (!test_bit(SC_OP_BEACONS, &sc->sc_flags))
237 ath9k_set_beacon(sc);
239 if (ah->opmode == NL80211_IFTYPE_STATION &&
240 test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags)) {
241 spin_lock_irqsave(&sc->sc_pm_lock, flags);
242 sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON;
243 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
246 ath_restart_work(sc);
249 if ((ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) && sc->ant_rx != 3)
250 ath_ant_comb_update(sc);
252 ieee80211_wake_queues(sc->hw);
257 static int ath_reset_internal(struct ath_softc *sc, struct ath9k_channel *hchan,
260 struct ath_hw *ah = sc->sc_ah;
261 struct ath_common *common = ath9k_hw_common(ah);
262 struct ath9k_hw_cal_data *caldata = NULL;
267 __ath_cancel_work(sc);
269 spin_lock_bh(&sc->sc_pcu_lock);
271 if (!(sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)) {
273 caldata = &sc->caldata;
282 if (!ath_prepare_reset(sc, retry_tx, flush))
285 ath_dbg(common, CONFIG, "Reset to %u MHz, HT40: %d fastcc: %d\n",
286 hchan->channel, IS_CHAN_HT40(hchan), fastcc);
288 r = ath9k_hw_reset(ah, hchan, caldata, fastcc);
291 "Unable to reset channel, reset status %d\n", r);
295 if (!ath_complete_reset(sc, true))
299 spin_unlock_bh(&sc->sc_pcu_lock);
305 * Set/change channels. If the channel is really being changed, it's done
306 * by reseting the chip. To accomplish this we must first cleanup any pending
307 * DMA, then restart stuff.
309 static int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
310 struct ath9k_channel *hchan)
314 if (test_bit(SC_OP_INVALID, &sc->sc_flags))
317 r = ath_reset_internal(sc, hchan, false);
322 static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta,
323 struct ieee80211_vif *vif)
327 an = (struct ath_node *)sta->drv_priv;
329 #ifdef CONFIG_ATH9K_DEBUGFS
330 spin_lock(&sc->nodes_lock);
331 list_add(&an->list, &sc->nodes);
332 spin_unlock(&sc->nodes_lock);
337 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
338 ath_tx_node_init(sc, an);
339 an->maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
340 sta->ht_cap.ampdu_factor);
341 density = ath9k_parse_mpdudensity(sta->ht_cap.ampdu_density);
342 an->mpdudensity = density;
346 static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
348 struct ath_node *an = (struct ath_node *)sta->drv_priv;
350 #ifdef CONFIG_ATH9K_DEBUGFS
351 spin_lock(&sc->nodes_lock);
353 spin_unlock(&sc->nodes_lock);
357 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT)
358 ath_tx_node_cleanup(sc, an);
361 void ath9k_tasklet(unsigned long data)
363 struct ath_softc *sc = (struct ath_softc *)data;
364 struct ath_hw *ah = sc->sc_ah;
365 struct ath_common *common = ath9k_hw_common(ah);
366 enum ath_reset_type type;
368 u32 status = sc->intrstatus;
372 spin_lock(&sc->sc_pcu_lock);
374 if ((status & ATH9K_INT_FATAL) ||
375 (status & ATH9K_INT_BB_WATCHDOG)) {
377 if (status & ATH9K_INT_FATAL)
378 type = RESET_TYPE_FATAL_INT;
380 type = RESET_TYPE_BB_WATCHDOG;
382 ath9k_queue_reset(sc, type);
386 spin_lock_irqsave(&sc->sc_pm_lock, flags);
387 if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
389 * TSF sync does not look correct; remain awake to sync with
392 ath_dbg(common, PS, "TSFOOR - Sync with next Beacon\n");
393 sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC;
395 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
397 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
398 rxmask = (ATH9K_INT_RXHP | ATH9K_INT_RXLP | ATH9K_INT_RXEOL |
401 rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
403 if (status & rxmask) {
404 /* Check for high priority Rx first */
405 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
406 (status & ATH9K_INT_RXHP))
407 ath_rx_tasklet(sc, 0, true);
409 ath_rx_tasklet(sc, 0, false);
412 if (status & ATH9K_INT_TX) {
413 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
414 ath_tx_edma_tasklet(sc);
419 ath9k_btcoex_handle_interrupt(sc, status);
422 /* re-enable hardware interrupt */
423 ath9k_hw_enable_interrupts(ah);
425 spin_unlock(&sc->sc_pcu_lock);
426 ath9k_ps_restore(sc);
429 irqreturn_t ath_isr(int irq, void *dev)
431 #define SCHED_INTR ( \
433 ATH9K_INT_BB_WATCHDOG | \
443 ATH9K_INT_GENTIMER | \
446 struct ath_softc *sc = dev;
447 struct ath_hw *ah = sc->sc_ah;
448 struct ath_common *common = ath9k_hw_common(ah);
449 enum ath9k_int status;
453 * The hardware is not ready/present, don't
454 * touch anything. Note this can happen early
455 * on if the IRQ is shared.
457 if (test_bit(SC_OP_INVALID, &sc->sc_flags))
460 /* shared irq, not for us */
462 if (!ath9k_hw_intrpend(ah))
465 if(test_bit(SC_OP_HW_RESET, &sc->sc_flags))
469 * Figure out the reason(s) for the interrupt. Note
470 * that the hal returns a pseudo-ISR that may include
471 * bits we haven't explicitly enabled so we mask the
472 * value to insure we only process bits we requested.
474 ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */
475 status &= ah->imask; /* discard unasked-for bits */
478 * If there are no status bits set, then this interrupt was not
479 * for me (should have been caught above).
484 /* Cache the status */
485 sc->intrstatus = status;
487 if (status & SCHED_INTR)
490 #ifdef CONFIG_PM_SLEEP
491 if (status & ATH9K_INT_BMISS) {
492 if (atomic_read(&sc->wow_sleep_proc_intr) == 0) {
493 ath_dbg(common, ANY, "during WoW we got a BMISS\n");
494 atomic_inc(&sc->wow_got_bmiss_intr);
495 atomic_dec(&sc->wow_sleep_proc_intr);
497 ath_dbg(common, INTERRUPT, "beacon miss interrupt\n");
502 * If a FATAL or RXORN interrupt is received, we have to reset the
505 if ((status & ATH9K_INT_FATAL) || ((status & ATH9K_INT_RXORN) &&
506 !(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)))
509 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
510 (status & ATH9K_INT_BB_WATCHDOG)) {
512 spin_lock(&common->cc_lock);
513 ath_hw_cycle_counters_update(common);
514 ar9003_hw_bb_watchdog_dbg_info(ah);
515 spin_unlock(&common->cc_lock);
520 if (status & ATH9K_INT_SWBA)
521 tasklet_schedule(&sc->bcon_tasklet);
523 if (status & ATH9K_INT_TXURN)
524 ath9k_hw_updatetxtriglevel(ah, true);
526 if (status & ATH9K_INT_RXEOL) {
527 ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
528 ath9k_hw_set_interrupts(ah);
531 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
532 if (status & ATH9K_INT_TIM_TIMER) {
533 if (ATH_DBG_WARN_ON_ONCE(sc->ps_idle))
535 /* Clear RxAbort bit so that we can
537 ath9k_setpower(sc, ATH9K_PM_AWAKE);
538 spin_lock(&sc->sc_pm_lock);
539 ath9k_hw_setrxabort(sc->sc_ah, 0);
540 sc->ps_flags |= PS_WAIT_FOR_BEACON;
541 spin_unlock(&sc->sc_pm_lock);
546 ath_debug_stat_interrupt(sc, status);
549 /* turn off every interrupt */
550 ath9k_hw_disable_interrupts(ah);
551 tasklet_schedule(&sc->intr_tq);
559 static int ath_reset(struct ath_softc *sc, bool retry_tx)
565 r = ath_reset_internal(sc, NULL, retry_tx);
569 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
570 if (ATH_TXQ_SETUP(sc, i)) {
571 spin_lock_bh(&sc->tx.txq[i].axq_lock);
572 ath_txq_schedule(sc, &sc->tx.txq[i]);
573 spin_unlock_bh(&sc->tx.txq[i].axq_lock);
578 ath9k_ps_restore(sc);
583 void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type)
585 #ifdef CONFIG_ATH9K_DEBUGFS
586 RESET_STAT_INC(sc, type);
588 set_bit(SC_OP_HW_RESET, &sc->sc_flags);
589 ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
592 void ath_reset_work(struct work_struct *work)
594 struct ath_softc *sc = container_of(work, struct ath_softc, hw_reset_work);
599 /**********************/
600 /* mac80211 callbacks */
601 /**********************/
603 static int ath9k_start(struct ieee80211_hw *hw)
605 struct ath_softc *sc = hw->priv;
606 struct ath_hw *ah = sc->sc_ah;
607 struct ath_common *common = ath9k_hw_common(ah);
608 struct ieee80211_channel *curchan = hw->conf.channel;
609 struct ath9k_channel *init_channel;
612 ath_dbg(common, CONFIG,
613 "Starting driver with initial channel: %d MHz\n",
614 curchan->center_freq);
617 mutex_lock(&sc->mutex);
619 init_channel = ath9k_cmn_get_curchannel(hw, ah);
621 /* Reset SERDES registers */
622 ath9k_hw_configpcipowersave(ah, false);
625 * The basic interface to setting the hardware in a good
626 * state is ``reset''. On return the hardware is known to
627 * be powered up and with interrupts disabled. This must
628 * be followed by initialization of the appropriate bits
629 * and then setup of the interrupt mask.
631 spin_lock_bh(&sc->sc_pcu_lock);
633 atomic_set(&ah->intr_ref_cnt, -1);
635 r = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
638 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
639 r, curchan->center_freq);
640 spin_unlock_bh(&sc->sc_pcu_lock);
644 /* Setup our intr mask. */
645 ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL |
646 ATH9K_INT_RXORN | ATH9K_INT_FATAL |
649 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
650 ah->imask |= ATH9K_INT_RXHP |
652 ATH9K_INT_BB_WATCHDOG;
654 ah->imask |= ATH9K_INT_RX;
656 ah->imask |= ATH9K_INT_GTT;
658 if (ah->caps.hw_caps & ATH9K_HW_CAP_HT)
659 ah->imask |= ATH9K_INT_CST;
663 clear_bit(SC_OP_INVALID, &sc->sc_flags);
664 sc->sc_ah->is_monitoring = false;
666 if (!ath_complete_reset(sc, false)) {
668 spin_unlock_bh(&sc->sc_pcu_lock);
672 if (ah->led_pin >= 0) {
673 ath9k_hw_cfg_output(ah, ah->led_pin,
674 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
675 ath9k_hw_set_gpio(ah, ah->led_pin, 0);
679 * Reset key cache to sane defaults (all entries cleared) instead of
680 * semi-random values after suspend/resume.
682 ath9k_cmn_init_crypto(sc->sc_ah);
684 spin_unlock_bh(&sc->sc_pcu_lock);
686 if (ah->caps.pcie_lcr_extsync_en && common->bus_ops->extn_synch_en)
687 common->bus_ops->extn_synch_en(common);
690 mutex_unlock(&sc->mutex);
692 ath9k_ps_restore(sc);
697 static void ath9k_tx(struct ieee80211_hw *hw,
698 struct ieee80211_tx_control *control,
701 struct ath_softc *sc = hw->priv;
702 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
703 struct ath_tx_control txctl;
704 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
707 if (sc->ps_enabled) {
709 * mac80211 does not set PM field for normal data frames, so we
710 * need to update that based on the current PS mode.
712 if (ieee80211_is_data(hdr->frame_control) &&
713 !ieee80211_is_nullfunc(hdr->frame_control) &&
714 !ieee80211_has_pm(hdr->frame_control)) {
716 "Add PM=1 for a TX frame while in PS mode\n");
717 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
721 if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP)) {
723 * We are using PS-Poll and mac80211 can request TX while in
724 * power save mode. Need to wake up hardware for the TX to be
725 * completed and if needed, also for RX of buffered frames.
728 spin_lock_irqsave(&sc->sc_pm_lock, flags);
729 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
730 ath9k_hw_setrxabort(sc->sc_ah, 0);
731 if (ieee80211_is_pspoll(hdr->frame_control)) {
733 "Sending PS-Poll to pick a buffered frame\n");
734 sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA;
736 ath_dbg(common, PS, "Wake up to complete TX\n");
737 sc->ps_flags |= PS_WAIT_FOR_TX_ACK;
740 * The actual restore operation will happen only after
741 * the ps_flags bit is cleared. We are just dropping
742 * the ps_usecount here.
744 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
745 ath9k_ps_restore(sc);
749 * Cannot tx while the hardware is in full sleep, it first needs a full
750 * chip reset to recover from that
752 if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_FULL_SLEEP)) {
753 ath_err(common, "TX while HW is in FULL_SLEEP mode\n");
757 memset(&txctl, 0, sizeof(struct ath_tx_control));
758 txctl.txq = sc->tx.txq_map[skb_get_queue_mapping(skb)];
759 txctl.sta = control->sta;
761 ath_dbg(common, XMIT, "transmitting packet, skb: %p\n", skb);
763 if (ath_tx_start(hw, skb, &txctl) != 0) {
764 ath_dbg(common, XMIT, "TX failed\n");
765 TX_STAT_INC(txctl.txq->axq_qnum, txfailed);
771 dev_kfree_skb_any(skb);
774 static void ath9k_stop(struct ieee80211_hw *hw)
776 struct ath_softc *sc = hw->priv;
777 struct ath_hw *ah = sc->sc_ah;
778 struct ath_common *common = ath9k_hw_common(ah);
781 mutex_lock(&sc->mutex);
784 del_timer_sync(&sc->rx_poll_timer);
786 if (test_bit(SC_OP_INVALID, &sc->sc_flags)) {
787 ath_dbg(common, ANY, "Device not present\n");
788 mutex_unlock(&sc->mutex);
792 /* Ensure HW is awake when we try to shut it down. */
795 spin_lock_bh(&sc->sc_pcu_lock);
797 /* prevent tasklets to enable interrupts once we disable them */
798 ah->imask &= ~ATH9K_INT_GLOBAL;
800 /* make sure h/w will not generate any interrupt
801 * before setting the invalid flag. */
802 ath9k_hw_disable_interrupts(ah);
804 spin_unlock_bh(&sc->sc_pcu_lock);
806 /* we can now sync irq and kill any running tasklets, since we already
807 * disabled interrupts and not holding a spin lock */
808 synchronize_irq(sc->irq);
809 tasklet_kill(&sc->intr_tq);
810 tasklet_kill(&sc->bcon_tasklet);
812 prev_idle = sc->ps_idle;
815 spin_lock_bh(&sc->sc_pcu_lock);
817 if (ah->led_pin >= 0) {
818 ath9k_hw_set_gpio(ah, ah->led_pin, 1);
819 ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
822 ath_prepare_reset(sc, false, true);
825 dev_kfree_skb_any(sc->rx.frag);
830 ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
832 ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
833 ath9k_hw_phy_disable(ah);
835 ath9k_hw_configpcipowersave(ah, true);
837 spin_unlock_bh(&sc->sc_pcu_lock);
839 ath9k_ps_restore(sc);
841 set_bit(SC_OP_INVALID, &sc->sc_flags);
842 sc->ps_idle = prev_idle;
844 mutex_unlock(&sc->mutex);
846 ath_dbg(common, CONFIG, "Driver halt\n");
849 bool ath9k_uses_beacons(int type)
852 case NL80211_IFTYPE_AP:
853 case NL80211_IFTYPE_ADHOC:
854 case NL80211_IFTYPE_MESH_POINT:
861 static void ath9k_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
863 struct ath9k_vif_iter_data *iter_data = data;
866 if (iter_data->hw_macaddr)
867 for (i = 0; i < ETH_ALEN; i++)
868 iter_data->mask[i] &=
869 ~(iter_data->hw_macaddr[i] ^ mac[i]);
872 case NL80211_IFTYPE_AP:
875 case NL80211_IFTYPE_STATION:
876 iter_data->nstations++;
878 case NL80211_IFTYPE_ADHOC:
879 iter_data->nadhocs++;
881 case NL80211_IFTYPE_MESH_POINT:
882 iter_data->nmeshes++;
884 case NL80211_IFTYPE_WDS:
892 static void ath9k_sta_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
894 struct ath_softc *sc = data;
895 struct ath_vif *avp = (void *)vif->drv_priv;
897 if (vif->type != NL80211_IFTYPE_STATION)
900 if (avp->primary_sta_vif)
901 ath9k_set_assoc_state(sc, vif);
904 /* Called with sc->mutex held. */
905 void ath9k_calculate_iter_data(struct ieee80211_hw *hw,
906 struct ieee80211_vif *vif,
907 struct ath9k_vif_iter_data *iter_data)
909 struct ath_softc *sc = hw->priv;
910 struct ath_hw *ah = sc->sc_ah;
911 struct ath_common *common = ath9k_hw_common(ah);
914 * Use the hardware MAC address as reference, the hardware uses it
915 * together with the BSSID mask when matching addresses.
917 memset(iter_data, 0, sizeof(*iter_data));
918 iter_data->hw_macaddr = common->macaddr;
919 memset(&iter_data->mask, 0xff, ETH_ALEN);
922 ath9k_vif_iter(iter_data, vif->addr, vif);
924 /* Get list of all active MAC addresses */
925 ieee80211_iterate_active_interfaces_atomic(sc->hw, ath9k_vif_iter,
929 /* Called with sc->mutex held. */
930 static void ath9k_calculate_summary_state(struct ieee80211_hw *hw,
931 struct ieee80211_vif *vif)
933 struct ath_softc *sc = hw->priv;
934 struct ath_hw *ah = sc->sc_ah;
935 struct ath_common *common = ath9k_hw_common(ah);
936 struct ath9k_vif_iter_data iter_data;
937 enum nl80211_iftype old_opmode = ah->opmode;
939 ath9k_calculate_iter_data(hw, vif, &iter_data);
941 memcpy(common->bssidmask, iter_data.mask, ETH_ALEN);
942 ath_hw_setbssidmask(common);
944 if (iter_data.naps > 0) {
945 ath9k_hw_set_tsfadjust(ah, true);
946 ah->opmode = NL80211_IFTYPE_AP;
948 ath9k_hw_set_tsfadjust(ah, false);
950 if (iter_data.nmeshes)
951 ah->opmode = NL80211_IFTYPE_MESH_POINT;
952 else if (iter_data.nwds)
953 ah->opmode = NL80211_IFTYPE_AP;
954 else if (iter_data.nadhocs)
955 ah->opmode = NL80211_IFTYPE_ADHOC;
957 ah->opmode = NL80211_IFTYPE_STATION;
960 ath9k_hw_setopmode(ah);
962 if ((iter_data.nstations + iter_data.nadhocs + iter_data.nmeshes) > 0)
963 ah->imask |= ATH9K_INT_TSFOOR;
965 ah->imask &= ~ATH9K_INT_TSFOOR;
967 ath9k_hw_set_interrupts(ah);
970 * If we are changing the opmode to STATION,
971 * a beacon sync needs to be done.
973 if (ah->opmode == NL80211_IFTYPE_STATION &&
974 old_opmode == NL80211_IFTYPE_AP &&
975 test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags)) {
976 ieee80211_iterate_active_interfaces_atomic(sc->hw,
977 ath9k_sta_vif_iter, sc);
981 static int ath9k_add_interface(struct ieee80211_hw *hw,
982 struct ieee80211_vif *vif)
984 struct ath_softc *sc = hw->priv;
985 struct ath_hw *ah = sc->sc_ah;
986 struct ath_common *common = ath9k_hw_common(ah);
990 mutex_lock(&sc->mutex);
993 case NL80211_IFTYPE_STATION:
994 case NL80211_IFTYPE_WDS:
995 case NL80211_IFTYPE_ADHOC:
996 case NL80211_IFTYPE_AP:
997 case NL80211_IFTYPE_MESH_POINT:
1000 ath_err(common, "Interface type %d not yet supported\n",
1006 if (ath9k_uses_beacons(vif->type)) {
1007 if (sc->nbcnvifs >= ATH_BCBUF) {
1008 ath_err(common, "Not enough beacon buffers when adding"
1009 " new interface of type: %i\n",
1016 ath_dbg(common, CONFIG, "Attach a VIF of type: %d\n", vif->type);
1020 ath9k_calculate_summary_state(hw, vif);
1021 if (ath9k_uses_beacons(vif->type))
1022 ath9k_beacon_assign_slot(sc, vif);
1025 mutex_unlock(&sc->mutex);
1026 ath9k_ps_restore(sc);
1030 static int ath9k_change_interface(struct ieee80211_hw *hw,
1031 struct ieee80211_vif *vif,
1032 enum nl80211_iftype new_type,
1035 struct ath_softc *sc = hw->priv;
1036 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1039 ath_dbg(common, CONFIG, "Change Interface\n");
1041 mutex_lock(&sc->mutex);
1042 ath9k_ps_wakeup(sc);
1044 if (ath9k_uses_beacons(new_type) &&
1045 !ath9k_uses_beacons(vif->type)) {
1046 if (sc->nbcnvifs >= ATH_BCBUF) {
1047 ath_err(common, "No beacon slot available\n");
1053 if (ath9k_uses_beacons(vif->type))
1054 ath9k_beacon_remove_slot(sc, vif);
1056 vif->type = new_type;
1059 ath9k_calculate_summary_state(hw, vif);
1060 if (ath9k_uses_beacons(vif->type))
1061 ath9k_beacon_assign_slot(sc, vif);
1064 ath9k_ps_restore(sc);
1065 mutex_unlock(&sc->mutex);
1069 static void ath9k_remove_interface(struct ieee80211_hw *hw,
1070 struct ieee80211_vif *vif)
1072 struct ath_softc *sc = hw->priv;
1073 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1075 ath_dbg(common, CONFIG, "Detach Interface\n");
1077 ath9k_ps_wakeup(sc);
1078 mutex_lock(&sc->mutex);
1082 if (ath9k_uses_beacons(vif->type))
1083 ath9k_beacon_remove_slot(sc, vif);
1085 ath9k_calculate_summary_state(hw, NULL);
1087 mutex_unlock(&sc->mutex);
1088 ath9k_ps_restore(sc);
1091 static void ath9k_enable_ps(struct ath_softc *sc)
1093 struct ath_hw *ah = sc->sc_ah;
1094 struct ath_common *common = ath9k_hw_common(ah);
1096 sc->ps_enabled = true;
1097 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1098 if ((ah->imask & ATH9K_INT_TIM_TIMER) == 0) {
1099 ah->imask |= ATH9K_INT_TIM_TIMER;
1100 ath9k_hw_set_interrupts(ah);
1102 ath9k_hw_setrxabort(ah, 1);
1104 ath_dbg(common, PS, "PowerSave enabled\n");
1107 static void ath9k_disable_ps(struct ath_softc *sc)
1109 struct ath_hw *ah = sc->sc_ah;
1110 struct ath_common *common = ath9k_hw_common(ah);
1112 sc->ps_enabled = false;
1113 ath9k_hw_setpower(ah, ATH9K_PM_AWAKE);
1114 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1115 ath9k_hw_setrxabort(ah, 0);
1116 sc->ps_flags &= ~(PS_WAIT_FOR_BEACON |
1118 PS_WAIT_FOR_PSPOLL_DATA |
1119 PS_WAIT_FOR_TX_ACK);
1120 if (ah->imask & ATH9K_INT_TIM_TIMER) {
1121 ah->imask &= ~ATH9K_INT_TIM_TIMER;
1122 ath9k_hw_set_interrupts(ah);
1125 ath_dbg(common, PS, "PowerSave disabled\n");
1128 static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
1130 struct ath_softc *sc = hw->priv;
1131 struct ath_hw *ah = sc->sc_ah;
1132 struct ath_common *common = ath9k_hw_common(ah);
1133 struct ieee80211_conf *conf = &hw->conf;
1134 bool reset_channel = false;
1136 ath9k_ps_wakeup(sc);
1137 mutex_lock(&sc->mutex);
1139 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1140 sc->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1142 ath_cancel_work(sc);
1143 ath9k_stop_btcoex(sc);
1145 ath9k_start_btcoex(sc);
1147 * The chip needs a reset to properly wake up from
1150 reset_channel = ah->chip_fullsleep;
1155 * We just prepare to enable PS. We have to wait until our AP has
1156 * ACK'd our null data frame to disable RX otherwise we'll ignore
1157 * those ACKs and end up retransmitting the same null data frames.
1158 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1160 if (changed & IEEE80211_CONF_CHANGE_PS) {
1161 unsigned long flags;
1162 spin_lock_irqsave(&sc->sc_pm_lock, flags);
1163 if (conf->flags & IEEE80211_CONF_PS)
1164 ath9k_enable_ps(sc);
1166 ath9k_disable_ps(sc);
1167 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
1170 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
1171 if (conf->flags & IEEE80211_CONF_MONITOR) {
1172 ath_dbg(common, CONFIG, "Monitor mode is enabled\n");
1173 sc->sc_ah->is_monitoring = true;
1175 ath_dbg(common, CONFIG, "Monitor mode is disabled\n");
1176 sc->sc_ah->is_monitoring = false;
1180 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || reset_channel) {
1181 struct ieee80211_channel *curchan = hw->conf.channel;
1182 int pos = curchan->hw_value;
1184 unsigned long flags;
1187 old_pos = ah->curchan - &ah->channels[0];
1189 ath_dbg(common, CONFIG, "Set channel: %d MHz type: %d\n",
1190 curchan->center_freq, conf->channel_type);
1192 /* update survey stats for the old channel before switching */
1193 spin_lock_irqsave(&common->cc_lock, flags);
1194 ath_update_survey_stats(sc);
1195 spin_unlock_irqrestore(&common->cc_lock, flags);
1198 * Preserve the current channel values, before updating
1201 if (ah->curchan && (old_pos == pos))
1202 ath9k_hw_getnf(ah, ah->curchan);
1204 ath9k_cmn_update_ichannel(&sc->sc_ah->channels[pos],
1205 curchan, conf->channel_type);
1208 * If the operating channel changes, change the survey in-use flags
1210 * Reset the survey data for the new channel, unless we're switching
1211 * back to the operating channel from an off-channel operation.
1213 if (!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) &&
1214 sc->cur_survey != &sc->survey[pos]) {
1217 sc->cur_survey->filled &= ~SURVEY_INFO_IN_USE;
1219 sc->cur_survey = &sc->survey[pos];
1221 memset(sc->cur_survey, 0, sizeof(struct survey_info));
1222 sc->cur_survey->filled |= SURVEY_INFO_IN_USE;
1223 } else if (!(sc->survey[pos].filled & SURVEY_INFO_IN_USE)) {
1224 memset(&sc->survey[pos], 0, sizeof(struct survey_info));
1227 if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
1228 ath_err(common, "Unable to set channel\n");
1229 mutex_unlock(&sc->mutex);
1230 ath9k_ps_restore(sc);
1235 * The most recent snapshot of channel->noisefloor for the old
1236 * channel is only available after the hardware reset. Copy it to
1237 * the survey stats now.
1240 ath_update_survey_nf(sc, old_pos);
1243 if (changed & IEEE80211_CONF_CHANGE_POWER) {
1244 ath_dbg(common, CONFIG, "Set power: %d\n", conf->power_level);
1245 sc->config.txpowlimit = 2 * conf->power_level;
1246 ath9k_cmn_update_txpow(ah, sc->curtxpow,
1247 sc->config.txpowlimit, &sc->curtxpow);
1250 mutex_unlock(&sc->mutex);
1251 ath9k_ps_restore(sc);
1256 #define SUPPORTED_FILTERS \
1257 (FIF_PROMISC_IN_BSS | \
1262 FIF_BCN_PRBRESP_PROMISC | \
1266 /* FIXME: sc->sc_full_reset ? */
1267 static void ath9k_configure_filter(struct ieee80211_hw *hw,
1268 unsigned int changed_flags,
1269 unsigned int *total_flags,
1272 struct ath_softc *sc = hw->priv;
1275 changed_flags &= SUPPORTED_FILTERS;
1276 *total_flags &= SUPPORTED_FILTERS;
1278 sc->rx.rxfilter = *total_flags;
1279 ath9k_ps_wakeup(sc);
1280 rfilt = ath_calcrxfilter(sc);
1281 ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
1282 ath9k_ps_restore(sc);
1284 ath_dbg(ath9k_hw_common(sc->sc_ah), CONFIG, "Set HW RX filter: 0x%x\n",
1288 static int ath9k_sta_add(struct ieee80211_hw *hw,
1289 struct ieee80211_vif *vif,
1290 struct ieee80211_sta *sta)
1292 struct ath_softc *sc = hw->priv;
1293 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1294 struct ath_node *an = (struct ath_node *) sta->drv_priv;
1295 struct ieee80211_key_conf ps_key = { };
1297 ath_node_attach(sc, sta, vif);
1299 if (vif->type != NL80211_IFTYPE_AP &&
1300 vif->type != NL80211_IFTYPE_AP_VLAN)
1303 an->ps_key = ath_key_config(common, vif, sta, &ps_key);
1308 static void ath9k_del_ps_key(struct ath_softc *sc,
1309 struct ieee80211_vif *vif,
1310 struct ieee80211_sta *sta)
1312 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1313 struct ath_node *an = (struct ath_node *) sta->drv_priv;
1314 struct ieee80211_key_conf ps_key = { .hw_key_idx = an->ps_key };
1319 ath_key_delete(common, &ps_key);
1322 static int ath9k_sta_remove(struct ieee80211_hw *hw,
1323 struct ieee80211_vif *vif,
1324 struct ieee80211_sta *sta)
1326 struct ath_softc *sc = hw->priv;
1328 ath9k_del_ps_key(sc, vif, sta);
1329 ath_node_detach(sc, sta);
1334 static void ath9k_sta_notify(struct ieee80211_hw *hw,
1335 struct ieee80211_vif *vif,
1336 enum sta_notify_cmd cmd,
1337 struct ieee80211_sta *sta)
1339 struct ath_softc *sc = hw->priv;
1340 struct ath_node *an = (struct ath_node *) sta->drv_priv;
1342 if (!sta->ht_cap.ht_supported)
1346 case STA_NOTIFY_SLEEP:
1347 an->sleeping = true;
1348 ath_tx_aggr_sleep(sta, sc, an);
1350 case STA_NOTIFY_AWAKE:
1351 an->sleeping = false;
1352 ath_tx_aggr_wakeup(sc, an);
1357 static int ath9k_conf_tx(struct ieee80211_hw *hw,
1358 struct ieee80211_vif *vif, u16 queue,
1359 const struct ieee80211_tx_queue_params *params)
1361 struct ath_softc *sc = hw->priv;
1362 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1363 struct ath_txq *txq;
1364 struct ath9k_tx_queue_info qi;
1367 if (queue >= WME_NUM_AC)
1370 txq = sc->tx.txq_map[queue];
1372 ath9k_ps_wakeup(sc);
1373 mutex_lock(&sc->mutex);
1375 memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
1377 qi.tqi_aifs = params->aifs;
1378 qi.tqi_cwmin = params->cw_min;
1379 qi.tqi_cwmax = params->cw_max;
1380 qi.tqi_burstTime = params->txop * 32;
1382 ath_dbg(common, CONFIG,
1383 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1384 queue, txq->axq_qnum, params->aifs, params->cw_min,
1385 params->cw_max, params->txop);
1387 ath_update_max_aggr_framelen(sc, queue, qi.tqi_burstTime);
1388 ret = ath_txq_update(sc, txq->axq_qnum, &qi);
1390 ath_err(common, "TXQ Update failed\n");
1392 mutex_unlock(&sc->mutex);
1393 ath9k_ps_restore(sc);
1398 static int ath9k_set_key(struct ieee80211_hw *hw,
1399 enum set_key_cmd cmd,
1400 struct ieee80211_vif *vif,
1401 struct ieee80211_sta *sta,
1402 struct ieee80211_key_conf *key)
1404 struct ath_softc *sc = hw->priv;
1405 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1408 if (ath9k_modparam_nohwcrypt)
1411 if ((vif->type == NL80211_IFTYPE_ADHOC ||
1412 vif->type == NL80211_IFTYPE_MESH_POINT) &&
1413 (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
1414 key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
1415 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
1417 * For now, disable hw crypto for the RSN IBSS group keys. This
1418 * could be optimized in the future to use a modified key cache
1419 * design to support per-STA RX GTK, but until that gets
1420 * implemented, use of software crypto for group addressed
1421 * frames is a acceptable to allow RSN IBSS to be used.
1426 mutex_lock(&sc->mutex);
1427 ath9k_ps_wakeup(sc);
1428 ath_dbg(common, CONFIG, "Set HW Key\n");
1433 ath9k_del_ps_key(sc, vif, sta);
1435 ret = ath_key_config(common, vif, sta, key);
1437 key->hw_key_idx = ret;
1438 /* push IV and Michael MIC generation to stack */
1439 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1440 if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
1441 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1442 if (sc->sc_ah->sw_mgmt_crypto &&
1443 key->cipher == WLAN_CIPHER_SUITE_CCMP)
1444 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
1449 ath_key_delete(common, key);
1455 ath9k_ps_restore(sc);
1456 mutex_unlock(&sc->mutex);
1461 static void ath9k_set_assoc_state(struct ath_softc *sc,
1462 struct ieee80211_vif *vif)
1464 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1465 struct ath_vif *avp = (void *)vif->drv_priv;
1466 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1467 unsigned long flags;
1469 set_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags);
1470 avp->primary_sta_vif = true;
1473 * Set the AID, BSSID and do beacon-sync only when
1474 * the HW opmode is STATION.
1476 * But the primary bit is set above in any case.
1478 if (sc->sc_ah->opmode != NL80211_IFTYPE_STATION)
1481 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1482 common->curaid = bss_conf->aid;
1483 ath9k_hw_write_associd(sc->sc_ah);
1485 sc->last_rssi = ATH_RSSI_DUMMY_MARKER;
1486 sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
1488 spin_lock_irqsave(&sc->sc_pm_lock, flags);
1489 sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON;
1490 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
1492 ath_dbg(common, CONFIG,
1493 "Primary Station interface: %pM, BSSID: %pM\n",
1494 vif->addr, common->curbssid);
1497 static void ath9k_bss_assoc_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
1499 struct ath_softc *sc = data;
1500 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1502 if (test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags))
1505 if (bss_conf->assoc)
1506 ath9k_set_assoc_state(sc, vif);
1509 static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
1510 struct ieee80211_vif *vif,
1511 struct ieee80211_bss_conf *bss_conf,
1515 (BSS_CHANGED_ASSOC | \
1516 BSS_CHANGED_IBSS | \
1517 BSS_CHANGED_BEACON_ENABLED)
1519 struct ath_softc *sc = hw->priv;
1520 struct ath_hw *ah = sc->sc_ah;
1521 struct ath_common *common = ath9k_hw_common(ah);
1522 struct ath_vif *avp = (void *)vif->drv_priv;
1525 ath9k_ps_wakeup(sc);
1526 mutex_lock(&sc->mutex);
1528 if (changed & BSS_CHANGED_ASSOC) {
1529 ath_dbg(common, CONFIG, "BSSID %pM Changed ASSOC %d\n",
1530 bss_conf->bssid, bss_conf->assoc);
1532 if (avp->primary_sta_vif && !bss_conf->assoc) {
1533 clear_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags);
1534 avp->primary_sta_vif = false;
1536 if (ah->opmode == NL80211_IFTYPE_STATION)
1537 clear_bit(SC_OP_BEACONS, &sc->sc_flags);
1540 ieee80211_iterate_active_interfaces_atomic(sc->hw,
1541 ath9k_bss_assoc_iter, sc);
1543 if (!test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags) &&
1544 ah->opmode == NL80211_IFTYPE_STATION) {
1545 memset(common->curbssid, 0, ETH_ALEN);
1547 ath9k_hw_write_associd(sc->sc_ah);
1551 if (changed & BSS_CHANGED_IBSS) {
1552 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1553 common->curaid = bss_conf->aid;
1554 ath9k_hw_write_associd(sc->sc_ah);
1557 if ((changed & BSS_CHANGED_BEACON_ENABLED) ||
1558 (changed & BSS_CHANGED_BEACON_INT)) {
1559 if (ah->opmode == NL80211_IFTYPE_AP &&
1560 bss_conf->enable_beacon)
1561 ath9k_set_tsfadjust(sc, vif);
1562 if (ath9k_allow_beacon_config(sc, vif))
1563 ath9k_beacon_config(sc, vif, changed);
1566 if (changed & BSS_CHANGED_ERP_SLOT) {
1567 if (bss_conf->use_short_slot)
1571 if (vif->type == NL80211_IFTYPE_AP) {
1573 * Defer update, so that connected stations can adjust
1574 * their settings at the same time.
1575 * See beacon.c for more details
1577 sc->beacon.slottime = slottime;
1578 sc->beacon.updateslot = UPDATE;
1580 ah->slottime = slottime;
1581 ath9k_hw_init_global_settings(ah);
1585 if (changed & CHECK_ANI)
1588 mutex_unlock(&sc->mutex);
1589 ath9k_ps_restore(sc);
1594 static u64 ath9k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1596 struct ath_softc *sc = hw->priv;
1599 mutex_lock(&sc->mutex);
1600 ath9k_ps_wakeup(sc);
1601 tsf = ath9k_hw_gettsf64(sc->sc_ah);
1602 ath9k_ps_restore(sc);
1603 mutex_unlock(&sc->mutex);
1608 static void ath9k_set_tsf(struct ieee80211_hw *hw,
1609 struct ieee80211_vif *vif,
1612 struct ath_softc *sc = hw->priv;
1614 mutex_lock(&sc->mutex);
1615 ath9k_ps_wakeup(sc);
1616 ath9k_hw_settsf64(sc->sc_ah, tsf);
1617 ath9k_ps_restore(sc);
1618 mutex_unlock(&sc->mutex);
1621 static void ath9k_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1623 struct ath_softc *sc = hw->priv;
1625 mutex_lock(&sc->mutex);
1627 ath9k_ps_wakeup(sc);
1628 ath9k_hw_reset_tsf(sc->sc_ah);
1629 ath9k_ps_restore(sc);
1631 mutex_unlock(&sc->mutex);
1634 static int ath9k_ampdu_action(struct ieee80211_hw *hw,
1635 struct ieee80211_vif *vif,
1636 enum ieee80211_ampdu_mlme_action action,
1637 struct ieee80211_sta *sta,
1638 u16 tid, u16 *ssn, u8 buf_size)
1640 struct ath_softc *sc = hw->priv;
1646 case IEEE80211_AMPDU_RX_START:
1648 case IEEE80211_AMPDU_RX_STOP:
1650 case IEEE80211_AMPDU_TX_START:
1651 ath9k_ps_wakeup(sc);
1652 ret = ath_tx_aggr_start(sc, sta, tid, ssn);
1654 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1655 ath9k_ps_restore(sc);
1657 case IEEE80211_AMPDU_TX_STOP:
1658 ath9k_ps_wakeup(sc);
1659 ath_tx_aggr_stop(sc, sta, tid);
1660 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1661 ath9k_ps_restore(sc);
1663 case IEEE80211_AMPDU_TX_OPERATIONAL:
1664 ath9k_ps_wakeup(sc);
1665 ath_tx_aggr_resume(sc, sta, tid);
1666 ath9k_ps_restore(sc);
1669 ath_err(ath9k_hw_common(sc->sc_ah), "Unknown AMPDU action\n");
1677 static int ath9k_get_survey(struct ieee80211_hw *hw, int idx,
1678 struct survey_info *survey)
1680 struct ath_softc *sc = hw->priv;
1681 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1682 struct ieee80211_supported_band *sband;
1683 struct ieee80211_channel *chan;
1684 unsigned long flags;
1687 spin_lock_irqsave(&common->cc_lock, flags);
1689 ath_update_survey_stats(sc);
1691 sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
1692 if (sband && idx >= sband->n_channels) {
1693 idx -= sband->n_channels;
1698 sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];
1700 if (!sband || idx >= sband->n_channels) {
1701 spin_unlock_irqrestore(&common->cc_lock, flags);
1705 chan = &sband->channels[idx];
1706 pos = chan->hw_value;
1707 memcpy(survey, &sc->survey[pos], sizeof(*survey));
1708 survey->channel = chan;
1709 spin_unlock_irqrestore(&common->cc_lock, flags);
1714 static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
1716 struct ath_softc *sc = hw->priv;
1717 struct ath_hw *ah = sc->sc_ah;
1719 mutex_lock(&sc->mutex);
1720 ah->coverage_class = coverage_class;
1722 ath9k_ps_wakeup(sc);
1723 ath9k_hw_init_global_settings(ah);
1724 ath9k_ps_restore(sc);
1726 mutex_unlock(&sc->mutex);
1729 static void ath9k_flush(struct ieee80211_hw *hw, bool drop)
1731 struct ath_softc *sc = hw->priv;
1732 struct ath_hw *ah = sc->sc_ah;
1733 struct ath_common *common = ath9k_hw_common(ah);
1734 int timeout = 200; /* ms */
1738 mutex_lock(&sc->mutex);
1739 cancel_delayed_work_sync(&sc->tx_complete_work);
1741 if (ah->ah_flags & AH_UNPLUGGED) {
1742 ath_dbg(common, ANY, "Device has been unplugged!\n");
1743 mutex_unlock(&sc->mutex);
1747 if (test_bit(SC_OP_INVALID, &sc->sc_flags)) {
1748 ath_dbg(common, ANY, "Device not present\n");
1749 mutex_unlock(&sc->mutex);
1753 for (j = 0; j < timeout; j++) {
1757 usleep_range(1000, 2000);
1759 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
1760 if (!ATH_TXQ_SETUP(sc, i))
1763 npend = ath9k_has_pending_frames(sc, &sc->tx.txq[i]);
1774 ath9k_ps_wakeup(sc);
1775 spin_lock_bh(&sc->sc_pcu_lock);
1776 drain_txq = ath_drain_all_txq(sc, false);
1777 spin_unlock_bh(&sc->sc_pcu_lock);
1780 ath_reset(sc, false);
1782 ath9k_ps_restore(sc);
1783 ieee80211_wake_queues(hw);
1786 ieee80211_queue_delayed_work(hw, &sc->tx_complete_work, 0);
1787 mutex_unlock(&sc->mutex);
1790 static bool ath9k_tx_frames_pending(struct ieee80211_hw *hw)
1792 struct ath_softc *sc = hw->priv;
1795 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
1796 if (!ATH_TXQ_SETUP(sc, i))
1799 if (ath9k_has_pending_frames(sc, &sc->tx.txq[i]))
1805 static int ath9k_tx_last_beacon(struct ieee80211_hw *hw)
1807 struct ath_softc *sc = hw->priv;
1808 struct ath_hw *ah = sc->sc_ah;
1809 struct ieee80211_vif *vif;
1810 struct ath_vif *avp;
1812 struct ath_tx_status ts;
1813 bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
1816 vif = sc->beacon.bslot[0];
1820 if (!vif->bss_conf.enable_beacon)
1823 avp = (void *)vif->drv_priv;
1825 if (!sc->beacon.tx_processed && !edma) {
1826 tasklet_disable(&sc->bcon_tasklet);
1829 if (!bf || !bf->bf_mpdu)
1832 status = ath9k_hw_txprocdesc(ah, bf->bf_desc, &ts);
1833 if (status == -EINPROGRESS)
1836 sc->beacon.tx_processed = true;
1837 sc->beacon.tx_last = !(ts.ts_status & ATH9K_TXERR_MASK);
1840 tasklet_enable(&sc->bcon_tasklet);
1843 return sc->beacon.tx_last;
1846 static int ath9k_get_stats(struct ieee80211_hw *hw,
1847 struct ieee80211_low_level_stats *stats)
1849 struct ath_softc *sc = hw->priv;
1850 struct ath_hw *ah = sc->sc_ah;
1851 struct ath9k_mib_stats *mib_stats = &ah->ah_mibStats;
1853 stats->dot11ACKFailureCount = mib_stats->ackrcv_bad;
1854 stats->dot11RTSFailureCount = mib_stats->rts_bad;
1855 stats->dot11FCSErrorCount = mib_stats->fcs_bad;
1856 stats->dot11RTSSuccessCount = mib_stats->rts_good;
1860 static u32 fill_chainmask(u32 cap, u32 new)
1865 for (i = 0; cap && new; i++, cap >>= 1) {
1866 if (!(cap & BIT(0)))
1878 static bool validate_antenna_mask(struct ath_hw *ah, u32 val)
1880 switch (val & 0x7) {
1886 return (ah->caps.rx_chainmask == 1);
1892 static int ath9k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
1894 struct ath_softc *sc = hw->priv;
1895 struct ath_hw *ah = sc->sc_ah;
1897 if (ah->caps.rx_chainmask != 1)
1900 if (!validate_antenna_mask(ah, rx_ant) || !tx_ant)
1903 sc->ant_rx = rx_ant;
1904 sc->ant_tx = tx_ant;
1906 if (ah->caps.rx_chainmask == 1)
1909 /* AR9100 runs into calibration issues if not all rx chains are enabled */
1910 if (AR_SREV_9100(ah))
1911 ah->rxchainmask = 0x7;
1913 ah->rxchainmask = fill_chainmask(ah->caps.rx_chainmask, rx_ant);
1915 ah->txchainmask = fill_chainmask(ah->caps.tx_chainmask, tx_ant);
1916 ath9k_reload_chainmask_settings(sc);
1921 static int ath9k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
1923 struct ath_softc *sc = hw->priv;
1925 *tx_ant = sc->ant_tx;
1926 *rx_ant = sc->ant_rx;
1930 #ifdef CONFIG_ATH9K_DEBUGFS
1932 /* Ethtool support for get-stats */
1934 #define AMKSTR(nm) #nm "_BE", #nm "_BK", #nm "_VI", #nm "_VO"
1935 static const char ath9k_gstrings_stats[][ETH_GSTRING_LEN] = {
1942 AMKSTR(d_tx_mpdus_queued),
1943 AMKSTR(d_tx_mpdus_completed),
1944 AMKSTR(d_tx_mpdu_xretries),
1945 AMKSTR(d_tx_aggregates),
1946 AMKSTR(d_tx_ampdus_queued_hw),
1947 AMKSTR(d_tx_ampdus_queued_sw),
1948 AMKSTR(d_tx_ampdus_completed),
1949 AMKSTR(d_tx_ampdu_retries),
1950 AMKSTR(d_tx_ampdu_xretries),
1951 AMKSTR(d_tx_fifo_underrun),
1952 AMKSTR(d_tx_op_exceeded),
1953 AMKSTR(d_tx_timer_expiry),
1954 AMKSTR(d_tx_desc_cfg_err),
1955 AMKSTR(d_tx_data_underrun),
1956 AMKSTR(d_tx_delim_underrun),
1958 "d_rx_decrypt_crc_err",
1961 "d_rx_pre_delim_crc_err",
1962 "d_rx_post_delim_crc_err",
1963 "d_rx_decrypt_busy_err",
1965 "d_rx_phyerr_radar",
1966 "d_rx_phyerr_ofdm_timing",
1967 "d_rx_phyerr_cck_timing",
1970 #define ATH9K_SSTATS_LEN ARRAY_SIZE(ath9k_gstrings_stats)
1972 static void ath9k_get_et_strings(struct ieee80211_hw *hw,
1973 struct ieee80211_vif *vif,
1976 if (sset == ETH_SS_STATS)
1977 memcpy(data, *ath9k_gstrings_stats,
1978 sizeof(ath9k_gstrings_stats));
1981 static int ath9k_get_et_sset_count(struct ieee80211_hw *hw,
1982 struct ieee80211_vif *vif, int sset)
1984 if (sset == ETH_SS_STATS)
1985 return ATH9K_SSTATS_LEN;
1989 #define PR_QNUM(_n) (sc->tx.txq_map[_n]->axq_qnum)
1990 #define AWDATA(elem) \
1992 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_BE)].elem; \
1993 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_BK)].elem; \
1994 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_VI)].elem; \
1995 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_VO)].elem; \
1998 #define AWDATA_RX(elem) \
2000 data[i++] = sc->debug.stats.rxstats.elem; \
2003 static void ath9k_get_et_stats(struct ieee80211_hw *hw,
2004 struct ieee80211_vif *vif,
2005 struct ethtool_stats *stats, u64 *data)
2007 struct ath_softc *sc = hw->priv;
2010 data[i++] = (sc->debug.stats.txstats[PR_QNUM(WME_AC_BE)].tx_pkts_all +
2011 sc->debug.stats.txstats[PR_QNUM(WME_AC_BK)].tx_pkts_all +
2012 sc->debug.stats.txstats[PR_QNUM(WME_AC_VI)].tx_pkts_all +
2013 sc->debug.stats.txstats[PR_QNUM(WME_AC_VO)].tx_pkts_all);
2014 data[i++] = (sc->debug.stats.txstats[PR_QNUM(WME_AC_BE)].tx_bytes_all +
2015 sc->debug.stats.txstats[PR_QNUM(WME_AC_BK)].tx_bytes_all +
2016 sc->debug.stats.txstats[PR_QNUM(WME_AC_VI)].tx_bytes_all +
2017 sc->debug.stats.txstats[PR_QNUM(WME_AC_VO)].tx_bytes_all);
2018 AWDATA_RX(rx_pkts_all);
2019 AWDATA_RX(rx_bytes_all);
2021 AWDATA(tx_pkts_all);
2022 AWDATA(tx_bytes_all);
2027 AWDATA(a_queued_hw);
2028 AWDATA(a_queued_sw);
2029 AWDATA(a_completed);
2032 AWDATA(fifo_underrun);
2035 AWDATA(desc_cfg_err);
2036 AWDATA(data_underrun);
2037 AWDATA(delim_underrun);
2039 AWDATA_RX(decrypt_crc_err);
2042 AWDATA_RX(pre_delim_crc_err);
2043 AWDATA_RX(post_delim_crc_err);
2044 AWDATA_RX(decrypt_busy_err);
2046 AWDATA_RX(phy_err_stats[ATH9K_PHYERR_RADAR]);
2047 AWDATA_RX(phy_err_stats[ATH9K_PHYERR_OFDM_TIMING]);
2048 AWDATA_RX(phy_err_stats[ATH9K_PHYERR_CCK_TIMING]);
2050 WARN_ON(i != ATH9K_SSTATS_LEN);
2053 /* End of ethtool get-stats functions */
2058 #ifdef CONFIG_PM_SLEEP
2060 static void ath9k_wow_map_triggers(struct ath_softc *sc,
2061 struct cfg80211_wowlan *wowlan,
2064 if (wowlan->disconnect)
2065 *wow_triggers |= AH_WOW_LINK_CHANGE |
2067 if (wowlan->magic_pkt)
2068 *wow_triggers |= AH_WOW_MAGIC_PATTERN_EN;
2070 if (wowlan->n_patterns)
2071 *wow_triggers |= AH_WOW_USER_PATTERN_EN;
2073 sc->wow_enabled = *wow_triggers;
2077 static void ath9k_wow_add_disassoc_deauth_pattern(struct ath_softc *sc)
2079 struct ath_hw *ah = sc->sc_ah;
2080 struct ath_common *common = ath9k_hw_common(ah);
2081 struct ath9k_hw_capabilities *pcaps = &ah->caps;
2082 int pattern_count = 0;
2084 u8 dis_deauth_pattern[MAX_PATTERN_SIZE];
2085 u8 dis_deauth_mask[MAX_PATTERN_SIZE];
2087 memset(dis_deauth_pattern, 0, MAX_PATTERN_SIZE);
2088 memset(dis_deauth_mask, 0, MAX_PATTERN_SIZE);
2091 * Create Dissassociate / Deauthenticate packet filter
2093 * 2 bytes 2 byte 6 bytes 6 bytes 6 bytes
2094 * +--------------+----------+---------+--------+--------+----
2095 * + Frame Control+ Duration + DA + SA + BSSID +
2096 * +--------------+----------+---------+--------+--------+----
2098 * The above is the management frame format for disassociate/
2099 * deauthenticate pattern, from this we need to match the first byte
2100 * of 'Frame Control' and DA, SA, and BSSID fields
2101 * (skipping 2nd byte of FC and Duration feild.
2103 * Disassociate pattern
2104 * --------------------
2105 * Frame control = 00 00 1010
2106 * DA, SA, BSSID = x:x:x:x:x:x
2107 * Pattern will be A0000000 | x:x:x:x:x:x | x:x:x:x:x:x
2108 * | x:x:x:x:x:x -- 22 bytes
2110 * Deauthenticate pattern
2111 * ----------------------
2112 * Frame control = 00 00 1100
2113 * DA, SA, BSSID = x:x:x:x:x:x
2114 * Pattern will be C0000000 | x:x:x:x:x:x | x:x:x:x:x:x
2115 * | x:x:x:x:x:x -- 22 bytes
2118 /* Create Disassociate Pattern first */
2122 /* Fill out the mask with all FF's */
2124 for (i = 0; i < MAX_PATTERN_MASK_SIZE; i++)
2125 dis_deauth_mask[i] = 0xff;
2127 /* copy the first byte of frame control field */
2128 dis_deauth_pattern[byte_cnt] = 0xa0;
2131 /* skip 2nd byte of frame control and Duration field */
2135 * need not match the destination mac address, it can be a broadcast
2136 * mac address or an unicast to this station
2140 /* copy the source mac address */
2141 memcpy((dis_deauth_pattern + byte_cnt), common->curbssid, ETH_ALEN);
2145 /* copy the bssid, its same as the source mac address */
2147 memcpy((dis_deauth_pattern + byte_cnt), common->curbssid, ETH_ALEN);
2149 /* Create Disassociate pattern mask */
2151 if (pcaps->hw_caps & ATH9K_HW_WOW_PATTERN_MATCH_EXACT) {
2153 if (pcaps->hw_caps & ATH9K_HW_WOW_PATTERN_MATCH_DWORD) {
2155 * for AR9280, because of hardware limitation, the
2156 * first 4 bytes have to be matched for all patterns.
2157 * the mask for disassociation and de-auth pattern
2158 * matching need to enable the first 4 bytes.
2159 * also the duration field needs to be filled.
2161 dis_deauth_mask[0] = 0xf0;
2164 * fill in duration field
2165 FIXME: what is the exact value ?
2167 dis_deauth_pattern[2] = 0xff;
2168 dis_deauth_pattern[3] = 0xff;
2170 dis_deauth_mask[0] = 0xfe;
2173 dis_deauth_mask[1] = 0x03;
2174 dis_deauth_mask[2] = 0xc0;
2176 dis_deauth_mask[0] = 0xef;
2177 dis_deauth_mask[1] = 0x3f;
2178 dis_deauth_mask[2] = 0x00;
2179 dis_deauth_mask[3] = 0xfc;
2182 ath_dbg(common, WOW, "Adding disassoc/deauth patterns for WoW\n");
2184 ath9k_hw_wow_apply_pattern(ah, dis_deauth_pattern, dis_deauth_mask,
2185 pattern_count, byte_cnt);
2189 * for de-authenticate pattern, only the first byte of the frame
2190 * control field gets changed from 0xA0 to 0xC0
2192 dis_deauth_pattern[0] = 0xC0;
2194 ath9k_hw_wow_apply_pattern(ah, dis_deauth_pattern, dis_deauth_mask,
2195 pattern_count, byte_cnt);
2199 static void ath9k_wow_add_pattern(struct ath_softc *sc,
2200 struct cfg80211_wowlan *wowlan)
2202 struct ath_hw *ah = sc->sc_ah;
2203 struct ath9k_wow_pattern *wow_pattern = NULL;
2204 struct cfg80211_wowlan_trig_pkt_pattern *patterns = wowlan->patterns;
2208 if (!wowlan->n_patterns)
2212 * Add the new user configured patterns
2214 for (i = 0; i < wowlan->n_patterns; i++) {
2216 wow_pattern = kzalloc(sizeof(*wow_pattern), GFP_KERNEL);
2222 * TODO: convert the generic user space pattern to
2223 * appropriate chip specific/802.11 pattern.
2226 mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
2227 memset(wow_pattern->pattern_bytes, 0, MAX_PATTERN_SIZE);
2228 memset(wow_pattern->mask_bytes, 0, MAX_PATTERN_SIZE);
2229 memcpy(wow_pattern->pattern_bytes, patterns[i].pattern,
2230 patterns[i].pattern_len);
2231 memcpy(wow_pattern->mask_bytes, patterns[i].mask, mask_len);
2232 wow_pattern->pattern_len = patterns[i].pattern_len;
2235 * just need to take care of deauth and disssoc pattern,
2236 * make sure we don't overwrite them.
2239 ath9k_hw_wow_apply_pattern(ah, wow_pattern->pattern_bytes,
2240 wow_pattern->mask_bytes,
2242 wow_pattern->pattern_len);
2249 static int ath9k_suspend(struct ieee80211_hw *hw,
2250 struct cfg80211_wowlan *wowlan)
2252 struct ath_softc *sc = hw->priv;
2253 struct ath_hw *ah = sc->sc_ah;
2254 struct ath_common *common = ath9k_hw_common(ah);
2255 u32 wow_triggers_enabled = 0;
2258 mutex_lock(&sc->mutex);
2260 ath_cancel_work(sc);
2261 del_timer_sync(&common->ani.timer);
2262 del_timer_sync(&sc->rx_poll_timer);
2264 if (test_bit(SC_OP_INVALID, &sc->sc_flags)) {
2265 ath_dbg(common, ANY, "Device not present\n");
2270 if (WARN_ON(!wowlan)) {
2271 ath_dbg(common, WOW, "None of the WoW triggers enabled\n");
2276 if (!device_can_wakeup(sc->dev)) {
2277 ath_dbg(common, WOW, "device_can_wakeup failed, WoW is not enabled\n");
2283 * none of the sta vifs are associated
2284 * and we are not currently handling multivif
2285 * cases, for instance we have to seperately
2286 * configure 'keep alive frame' for each
2290 if (!test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags)) {
2291 ath_dbg(common, WOW, "None of the STA vifs are associated\n");
2296 if (sc->nvifs > 1) {
2297 ath_dbg(common, WOW, "WoW for multivif is not yet supported\n");
2302 ath9k_wow_map_triggers(sc, wowlan, &wow_triggers_enabled);
2304 ath_dbg(common, WOW, "WoW triggers enabled 0x%x\n",
2305 wow_triggers_enabled);
2307 ath9k_ps_wakeup(sc);
2309 ath9k_stop_btcoex(sc);
2312 * Enable wake up on recieving disassoc/deauth
2315 ath9k_wow_add_disassoc_deauth_pattern(sc);
2317 if (wow_triggers_enabled & AH_WOW_USER_PATTERN_EN)
2318 ath9k_wow_add_pattern(sc, wowlan);
2320 spin_lock_bh(&sc->sc_pcu_lock);
2322 * To avoid false wake, we enable beacon miss interrupt only
2323 * when we go to sleep. We save the current interrupt mask
2324 * so we can restore it after the system wakes up
2326 sc->wow_intr_before_sleep = ah->imask;
2327 ah->imask &= ~ATH9K_INT_GLOBAL;
2328 ath9k_hw_disable_interrupts(ah);
2329 ah->imask = ATH9K_INT_BMISS | ATH9K_INT_GLOBAL;
2330 ath9k_hw_set_interrupts(ah);
2331 ath9k_hw_enable_interrupts(ah);
2333 spin_unlock_bh(&sc->sc_pcu_lock);
2336 * we can now sync irq and kill any running tasklets, since we already
2337 * disabled interrupts and not holding a spin lock
2339 synchronize_irq(sc->irq);
2340 tasklet_kill(&sc->intr_tq);
2342 ath9k_hw_wow_enable(ah, wow_triggers_enabled);
2344 ath9k_ps_restore(sc);
2345 ath_dbg(common, ANY, "WoW enabled in ath9k\n");
2346 atomic_inc(&sc->wow_sleep_proc_intr);
2349 mutex_unlock(&sc->mutex);
2353 static int ath9k_resume(struct ieee80211_hw *hw)
2355 struct ath_softc *sc = hw->priv;
2356 struct ath_hw *ah = sc->sc_ah;
2357 struct ath_common *common = ath9k_hw_common(ah);
2360 mutex_lock(&sc->mutex);
2362 ath9k_ps_wakeup(sc);
2364 spin_lock_bh(&sc->sc_pcu_lock);
2366 ath9k_hw_disable_interrupts(ah);
2367 ah->imask = sc->wow_intr_before_sleep;
2368 ath9k_hw_set_interrupts(ah);
2369 ath9k_hw_enable_interrupts(ah);
2371 spin_unlock_bh(&sc->sc_pcu_lock);
2373 wow_status = ath9k_hw_wow_wakeup(ah);
2375 if (atomic_read(&sc->wow_got_bmiss_intr) == 0) {
2377 * some devices may not pick beacon miss
2378 * as the reason they woke up so we add
2379 * that here for that shortcoming.
2381 wow_status |= AH_WOW_BEACON_MISS;
2382 atomic_dec(&sc->wow_got_bmiss_intr);
2383 ath_dbg(common, ANY, "Beacon miss interrupt picked up during WoW sleep\n");
2386 atomic_dec(&sc->wow_sleep_proc_intr);
2389 ath_dbg(common, ANY, "Waking up due to WoW triggers %s with WoW status = %x\n",
2390 ath9k_hw_wow_event_to_string(wow_status), wow_status);
2393 ath_restart_work(sc);
2394 ath9k_start_btcoex(sc);
2396 ath9k_ps_restore(sc);
2397 mutex_unlock(&sc->mutex);
2402 static void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled)
2404 struct ath_softc *sc = hw->priv;
2406 mutex_lock(&sc->mutex);
2407 device_init_wakeup(sc->dev, 1);
2408 device_set_wakeup_enable(sc->dev, enabled);
2409 mutex_unlock(&sc->mutex);
2414 struct ieee80211_ops ath9k_ops = {
2416 .start = ath9k_start,
2418 .add_interface = ath9k_add_interface,
2419 .change_interface = ath9k_change_interface,
2420 .remove_interface = ath9k_remove_interface,
2421 .config = ath9k_config,
2422 .configure_filter = ath9k_configure_filter,
2423 .sta_add = ath9k_sta_add,
2424 .sta_remove = ath9k_sta_remove,
2425 .sta_notify = ath9k_sta_notify,
2426 .conf_tx = ath9k_conf_tx,
2427 .bss_info_changed = ath9k_bss_info_changed,
2428 .set_key = ath9k_set_key,
2429 .get_tsf = ath9k_get_tsf,
2430 .set_tsf = ath9k_set_tsf,
2431 .reset_tsf = ath9k_reset_tsf,
2432 .ampdu_action = ath9k_ampdu_action,
2433 .get_survey = ath9k_get_survey,
2434 .rfkill_poll = ath9k_rfkill_poll_state,
2435 .set_coverage_class = ath9k_set_coverage_class,
2436 .flush = ath9k_flush,
2437 .tx_frames_pending = ath9k_tx_frames_pending,
2438 .tx_last_beacon = ath9k_tx_last_beacon,
2439 .get_stats = ath9k_get_stats,
2440 .set_antenna = ath9k_set_antenna,
2441 .get_antenna = ath9k_get_antenna,
2443 #ifdef CONFIG_PM_SLEEP
2444 .suspend = ath9k_suspend,
2445 .resume = ath9k_resume,
2446 .set_wakeup = ath9k_set_wakeup,
2449 #ifdef CONFIG_ATH9K_DEBUGFS
2450 .get_et_sset_count = ath9k_get_et_sset_count,
2451 .get_et_stats = ath9k_get_et_stats,
2452 .get_et_strings = ath9k_get_et_strings,