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)) {
466 ath9k_hw_kill_interrupts(ah);
471 * Figure out the reason(s) for the interrupt. Note
472 * that the hal returns a pseudo-ISR that may include
473 * bits we haven't explicitly enabled so we mask the
474 * value to insure we only process bits we requested.
476 ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */
477 status &= ah->imask; /* discard unasked-for bits */
480 * If there are no status bits set, then this interrupt was not
481 * for me (should have been caught above).
486 /* Cache the status */
487 sc->intrstatus = status;
489 if (status & SCHED_INTR)
492 #ifdef CONFIG_PM_SLEEP
493 if (status & ATH9K_INT_BMISS) {
494 if (atomic_read(&sc->wow_sleep_proc_intr) == 0) {
495 ath_dbg(common, ANY, "during WoW we got a BMISS\n");
496 atomic_inc(&sc->wow_got_bmiss_intr);
497 atomic_dec(&sc->wow_sleep_proc_intr);
499 ath_dbg(common, INTERRUPT, "beacon miss interrupt\n");
504 * If a FATAL or RXORN interrupt is received, we have to reset the
507 if ((status & ATH9K_INT_FATAL) || ((status & ATH9K_INT_RXORN) &&
508 !(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)))
511 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
512 (status & ATH9K_INT_BB_WATCHDOG)) {
514 spin_lock(&common->cc_lock);
515 ath_hw_cycle_counters_update(common);
516 ar9003_hw_bb_watchdog_dbg_info(ah);
517 spin_unlock(&common->cc_lock);
522 if (status & ATH9K_INT_SWBA)
523 tasklet_schedule(&sc->bcon_tasklet);
525 if (status & ATH9K_INT_TXURN)
526 ath9k_hw_updatetxtriglevel(ah, true);
528 if (status & ATH9K_INT_RXEOL) {
529 ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
530 ath9k_hw_set_interrupts(ah);
533 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
534 if (status & ATH9K_INT_TIM_TIMER) {
535 if (ATH_DBG_WARN_ON_ONCE(sc->ps_idle))
537 /* Clear RxAbort bit so that we can
539 ath9k_setpower(sc, ATH9K_PM_AWAKE);
540 spin_lock(&sc->sc_pm_lock);
541 ath9k_hw_setrxabort(sc->sc_ah, 0);
542 sc->ps_flags |= PS_WAIT_FOR_BEACON;
543 spin_unlock(&sc->sc_pm_lock);
548 ath_debug_stat_interrupt(sc, status);
551 /* turn off every interrupt */
552 ath9k_hw_disable_interrupts(ah);
553 tasklet_schedule(&sc->intr_tq);
561 static int ath_reset(struct ath_softc *sc, bool retry_tx)
567 r = ath_reset_internal(sc, NULL, retry_tx);
571 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
572 if (ATH_TXQ_SETUP(sc, i)) {
573 spin_lock_bh(&sc->tx.txq[i].axq_lock);
574 ath_txq_schedule(sc, &sc->tx.txq[i]);
575 spin_unlock_bh(&sc->tx.txq[i].axq_lock);
580 ath9k_ps_restore(sc);
585 void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type)
587 #ifdef CONFIG_ATH9K_DEBUGFS
588 RESET_STAT_INC(sc, type);
590 set_bit(SC_OP_HW_RESET, &sc->sc_flags);
591 ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
594 void ath_reset_work(struct work_struct *work)
596 struct ath_softc *sc = container_of(work, struct ath_softc, hw_reset_work);
601 /**********************/
602 /* mac80211 callbacks */
603 /**********************/
605 static int ath9k_start(struct ieee80211_hw *hw)
607 struct ath_softc *sc = hw->priv;
608 struct ath_hw *ah = sc->sc_ah;
609 struct ath_common *common = ath9k_hw_common(ah);
610 struct ieee80211_channel *curchan = hw->conf.channel;
611 struct ath9k_channel *init_channel;
614 ath_dbg(common, CONFIG,
615 "Starting driver with initial channel: %d MHz\n",
616 curchan->center_freq);
619 mutex_lock(&sc->mutex);
621 init_channel = ath9k_cmn_get_curchannel(hw, ah);
623 /* Reset SERDES registers */
624 ath9k_hw_configpcipowersave(ah, false);
627 * The basic interface to setting the hardware in a good
628 * state is ``reset''. On return the hardware is known to
629 * be powered up and with interrupts disabled. This must
630 * be followed by initialization of the appropriate bits
631 * and then setup of the interrupt mask.
633 spin_lock_bh(&sc->sc_pcu_lock);
635 atomic_set(&ah->intr_ref_cnt, -1);
637 r = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
640 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
641 r, curchan->center_freq);
642 spin_unlock_bh(&sc->sc_pcu_lock);
646 /* Setup our intr mask. */
647 ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL |
648 ATH9K_INT_RXORN | ATH9K_INT_FATAL |
651 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
652 ah->imask |= ATH9K_INT_RXHP |
654 ATH9K_INT_BB_WATCHDOG;
656 ah->imask |= ATH9K_INT_RX;
658 ah->imask |= ATH9K_INT_GTT;
660 if (ah->caps.hw_caps & ATH9K_HW_CAP_HT)
661 ah->imask |= ATH9K_INT_CST;
665 clear_bit(SC_OP_INVALID, &sc->sc_flags);
666 sc->sc_ah->is_monitoring = false;
668 if (!ath_complete_reset(sc, false)) {
670 spin_unlock_bh(&sc->sc_pcu_lock);
674 if (ah->led_pin >= 0) {
675 ath9k_hw_cfg_output(ah, ah->led_pin,
676 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
677 ath9k_hw_set_gpio(ah, ah->led_pin, 0);
681 * Reset key cache to sane defaults (all entries cleared) instead of
682 * semi-random values after suspend/resume.
684 ath9k_cmn_init_crypto(sc->sc_ah);
686 spin_unlock_bh(&sc->sc_pcu_lock);
688 if (ah->caps.pcie_lcr_extsync_en && common->bus_ops->extn_synch_en)
689 common->bus_ops->extn_synch_en(common);
692 mutex_unlock(&sc->mutex);
694 ath9k_ps_restore(sc);
699 static void ath9k_tx(struct ieee80211_hw *hw,
700 struct ieee80211_tx_control *control,
703 struct ath_softc *sc = hw->priv;
704 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
705 struct ath_tx_control txctl;
706 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
709 if (sc->ps_enabled) {
711 * mac80211 does not set PM field for normal data frames, so we
712 * need to update that based on the current PS mode.
714 if (ieee80211_is_data(hdr->frame_control) &&
715 !ieee80211_is_nullfunc(hdr->frame_control) &&
716 !ieee80211_has_pm(hdr->frame_control)) {
718 "Add PM=1 for a TX frame while in PS mode\n");
719 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
723 if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP)) {
725 * We are using PS-Poll and mac80211 can request TX while in
726 * power save mode. Need to wake up hardware for the TX to be
727 * completed and if needed, also for RX of buffered frames.
730 spin_lock_irqsave(&sc->sc_pm_lock, flags);
731 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
732 ath9k_hw_setrxabort(sc->sc_ah, 0);
733 if (ieee80211_is_pspoll(hdr->frame_control)) {
735 "Sending PS-Poll to pick a buffered frame\n");
736 sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA;
738 ath_dbg(common, PS, "Wake up to complete TX\n");
739 sc->ps_flags |= PS_WAIT_FOR_TX_ACK;
742 * The actual restore operation will happen only after
743 * the ps_flags bit is cleared. We are just dropping
744 * the ps_usecount here.
746 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
747 ath9k_ps_restore(sc);
751 * Cannot tx while the hardware is in full sleep, it first needs a full
752 * chip reset to recover from that
754 if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_FULL_SLEEP)) {
755 ath_err(common, "TX while HW is in FULL_SLEEP mode\n");
759 memset(&txctl, 0, sizeof(struct ath_tx_control));
760 txctl.txq = sc->tx.txq_map[skb_get_queue_mapping(skb)];
761 txctl.sta = control->sta;
763 ath_dbg(common, XMIT, "transmitting packet, skb: %p\n", skb);
765 if (ath_tx_start(hw, skb, &txctl) != 0) {
766 ath_dbg(common, XMIT, "TX failed\n");
767 TX_STAT_INC(txctl.txq->axq_qnum, txfailed);
773 dev_kfree_skb_any(skb);
776 static void ath9k_stop(struct ieee80211_hw *hw)
778 struct ath_softc *sc = hw->priv;
779 struct ath_hw *ah = sc->sc_ah;
780 struct ath_common *common = ath9k_hw_common(ah);
783 mutex_lock(&sc->mutex);
786 del_timer_sync(&sc->rx_poll_timer);
788 if (test_bit(SC_OP_INVALID, &sc->sc_flags)) {
789 ath_dbg(common, ANY, "Device not present\n");
790 mutex_unlock(&sc->mutex);
794 /* Ensure HW is awake when we try to shut it down. */
797 spin_lock_bh(&sc->sc_pcu_lock);
799 /* prevent tasklets to enable interrupts once we disable them */
800 ah->imask &= ~ATH9K_INT_GLOBAL;
802 /* make sure h/w will not generate any interrupt
803 * before setting the invalid flag. */
804 ath9k_hw_disable_interrupts(ah);
806 spin_unlock_bh(&sc->sc_pcu_lock);
808 /* we can now sync irq and kill any running tasklets, since we already
809 * disabled interrupts and not holding a spin lock */
810 synchronize_irq(sc->irq);
811 tasklet_kill(&sc->intr_tq);
812 tasklet_kill(&sc->bcon_tasklet);
814 prev_idle = sc->ps_idle;
817 spin_lock_bh(&sc->sc_pcu_lock);
819 if (ah->led_pin >= 0) {
820 ath9k_hw_set_gpio(ah, ah->led_pin, 1);
821 ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
824 ath_prepare_reset(sc, false, true);
827 dev_kfree_skb_any(sc->rx.frag);
832 ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
834 ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
835 ath9k_hw_phy_disable(ah);
837 ath9k_hw_configpcipowersave(ah, true);
839 spin_unlock_bh(&sc->sc_pcu_lock);
841 ath9k_ps_restore(sc);
843 set_bit(SC_OP_INVALID, &sc->sc_flags);
844 sc->ps_idle = prev_idle;
846 mutex_unlock(&sc->mutex);
848 ath_dbg(common, CONFIG, "Driver halt\n");
851 bool ath9k_uses_beacons(int type)
854 case NL80211_IFTYPE_AP:
855 case NL80211_IFTYPE_ADHOC:
856 case NL80211_IFTYPE_MESH_POINT:
863 static void ath9k_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
865 struct ath9k_vif_iter_data *iter_data = data;
868 if (iter_data->hw_macaddr)
869 for (i = 0; i < ETH_ALEN; i++)
870 iter_data->mask[i] &=
871 ~(iter_data->hw_macaddr[i] ^ mac[i]);
874 case NL80211_IFTYPE_AP:
877 case NL80211_IFTYPE_STATION:
878 iter_data->nstations++;
880 case NL80211_IFTYPE_ADHOC:
881 iter_data->nadhocs++;
883 case NL80211_IFTYPE_MESH_POINT:
884 iter_data->nmeshes++;
886 case NL80211_IFTYPE_WDS:
894 static void ath9k_sta_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
896 struct ath_softc *sc = data;
897 struct ath_vif *avp = (void *)vif->drv_priv;
899 if (vif->type != NL80211_IFTYPE_STATION)
902 if (avp->primary_sta_vif)
903 ath9k_set_assoc_state(sc, vif);
906 /* Called with sc->mutex held. */
907 void ath9k_calculate_iter_data(struct ieee80211_hw *hw,
908 struct ieee80211_vif *vif,
909 struct ath9k_vif_iter_data *iter_data)
911 struct ath_softc *sc = hw->priv;
912 struct ath_hw *ah = sc->sc_ah;
913 struct ath_common *common = ath9k_hw_common(ah);
916 * Use the hardware MAC address as reference, the hardware uses it
917 * together with the BSSID mask when matching addresses.
919 memset(iter_data, 0, sizeof(*iter_data));
920 iter_data->hw_macaddr = common->macaddr;
921 memset(&iter_data->mask, 0xff, ETH_ALEN);
924 ath9k_vif_iter(iter_data, vif->addr, vif);
926 /* Get list of all active MAC addresses */
927 ieee80211_iterate_active_interfaces_atomic(sc->hw, ath9k_vif_iter,
931 /* Called with sc->mutex held. */
932 static void ath9k_calculate_summary_state(struct ieee80211_hw *hw,
933 struct ieee80211_vif *vif)
935 struct ath_softc *sc = hw->priv;
936 struct ath_hw *ah = sc->sc_ah;
937 struct ath_common *common = ath9k_hw_common(ah);
938 struct ath9k_vif_iter_data iter_data;
939 enum nl80211_iftype old_opmode = ah->opmode;
941 ath9k_calculate_iter_data(hw, vif, &iter_data);
943 memcpy(common->bssidmask, iter_data.mask, ETH_ALEN);
944 ath_hw_setbssidmask(common);
946 if (iter_data.naps > 0) {
947 ath9k_hw_set_tsfadjust(ah, true);
948 ah->opmode = NL80211_IFTYPE_AP;
950 ath9k_hw_set_tsfadjust(ah, false);
952 if (iter_data.nmeshes)
953 ah->opmode = NL80211_IFTYPE_MESH_POINT;
954 else if (iter_data.nwds)
955 ah->opmode = NL80211_IFTYPE_AP;
956 else if (iter_data.nadhocs)
957 ah->opmode = NL80211_IFTYPE_ADHOC;
959 ah->opmode = NL80211_IFTYPE_STATION;
962 ath9k_hw_setopmode(ah);
964 if ((iter_data.nstations + iter_data.nadhocs + iter_data.nmeshes) > 0)
965 ah->imask |= ATH9K_INT_TSFOOR;
967 ah->imask &= ~ATH9K_INT_TSFOOR;
969 ath9k_hw_set_interrupts(ah);
972 * If we are changing the opmode to STATION,
973 * a beacon sync needs to be done.
975 if (ah->opmode == NL80211_IFTYPE_STATION &&
976 old_opmode == NL80211_IFTYPE_AP &&
977 test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags)) {
978 ieee80211_iterate_active_interfaces_atomic(sc->hw,
979 ath9k_sta_vif_iter, sc);
983 static int ath9k_add_interface(struct ieee80211_hw *hw,
984 struct ieee80211_vif *vif)
986 struct ath_softc *sc = hw->priv;
987 struct ath_hw *ah = sc->sc_ah;
988 struct ath_common *common = ath9k_hw_common(ah);
992 mutex_lock(&sc->mutex);
995 case NL80211_IFTYPE_STATION:
996 case NL80211_IFTYPE_WDS:
997 case NL80211_IFTYPE_ADHOC:
998 case NL80211_IFTYPE_AP:
999 case NL80211_IFTYPE_MESH_POINT:
1002 ath_err(common, "Interface type %d not yet supported\n",
1008 if (ath9k_uses_beacons(vif->type)) {
1009 if (sc->nbcnvifs >= ATH_BCBUF) {
1010 ath_err(common, "Not enough beacon buffers when adding"
1011 " new interface of type: %i\n",
1018 ath_dbg(common, CONFIG, "Attach a VIF of type: %d\n", vif->type);
1022 ath9k_calculate_summary_state(hw, vif);
1023 if (ath9k_uses_beacons(vif->type))
1024 ath9k_beacon_assign_slot(sc, vif);
1027 mutex_unlock(&sc->mutex);
1028 ath9k_ps_restore(sc);
1032 static int ath9k_change_interface(struct ieee80211_hw *hw,
1033 struct ieee80211_vif *vif,
1034 enum nl80211_iftype new_type,
1037 struct ath_softc *sc = hw->priv;
1038 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1041 ath_dbg(common, CONFIG, "Change Interface\n");
1043 mutex_lock(&sc->mutex);
1044 ath9k_ps_wakeup(sc);
1046 if (ath9k_uses_beacons(new_type) &&
1047 !ath9k_uses_beacons(vif->type)) {
1048 if (sc->nbcnvifs >= ATH_BCBUF) {
1049 ath_err(common, "No beacon slot available\n");
1055 if (ath9k_uses_beacons(vif->type))
1056 ath9k_beacon_remove_slot(sc, vif);
1058 vif->type = new_type;
1061 ath9k_calculate_summary_state(hw, vif);
1062 if (ath9k_uses_beacons(vif->type))
1063 ath9k_beacon_assign_slot(sc, vif);
1066 ath9k_ps_restore(sc);
1067 mutex_unlock(&sc->mutex);
1071 static void ath9k_remove_interface(struct ieee80211_hw *hw,
1072 struct ieee80211_vif *vif)
1074 struct ath_softc *sc = hw->priv;
1075 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1077 ath_dbg(common, CONFIG, "Detach Interface\n");
1079 ath9k_ps_wakeup(sc);
1080 mutex_lock(&sc->mutex);
1084 if (ath9k_uses_beacons(vif->type))
1085 ath9k_beacon_remove_slot(sc, vif);
1087 ath9k_calculate_summary_state(hw, NULL);
1089 mutex_unlock(&sc->mutex);
1090 ath9k_ps_restore(sc);
1093 static void ath9k_enable_ps(struct ath_softc *sc)
1095 struct ath_hw *ah = sc->sc_ah;
1096 struct ath_common *common = ath9k_hw_common(ah);
1098 sc->ps_enabled = true;
1099 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1100 if ((ah->imask & ATH9K_INT_TIM_TIMER) == 0) {
1101 ah->imask |= ATH9K_INT_TIM_TIMER;
1102 ath9k_hw_set_interrupts(ah);
1104 ath9k_hw_setrxabort(ah, 1);
1106 ath_dbg(common, PS, "PowerSave enabled\n");
1109 static void ath9k_disable_ps(struct ath_softc *sc)
1111 struct ath_hw *ah = sc->sc_ah;
1112 struct ath_common *common = ath9k_hw_common(ah);
1114 sc->ps_enabled = false;
1115 ath9k_hw_setpower(ah, ATH9K_PM_AWAKE);
1116 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1117 ath9k_hw_setrxabort(ah, 0);
1118 sc->ps_flags &= ~(PS_WAIT_FOR_BEACON |
1120 PS_WAIT_FOR_PSPOLL_DATA |
1121 PS_WAIT_FOR_TX_ACK);
1122 if (ah->imask & ATH9K_INT_TIM_TIMER) {
1123 ah->imask &= ~ATH9K_INT_TIM_TIMER;
1124 ath9k_hw_set_interrupts(ah);
1127 ath_dbg(common, PS, "PowerSave disabled\n");
1130 static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
1132 struct ath_softc *sc = hw->priv;
1133 struct ath_hw *ah = sc->sc_ah;
1134 struct ath_common *common = ath9k_hw_common(ah);
1135 struct ieee80211_conf *conf = &hw->conf;
1136 bool reset_channel = false;
1138 ath9k_ps_wakeup(sc);
1139 mutex_lock(&sc->mutex);
1141 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1142 sc->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1144 ath_cancel_work(sc);
1145 ath9k_stop_btcoex(sc);
1147 ath9k_start_btcoex(sc);
1149 * The chip needs a reset to properly wake up from
1152 reset_channel = ah->chip_fullsleep;
1157 * We just prepare to enable PS. We have to wait until our AP has
1158 * ACK'd our null data frame to disable RX otherwise we'll ignore
1159 * those ACKs and end up retransmitting the same null data frames.
1160 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1162 if (changed & IEEE80211_CONF_CHANGE_PS) {
1163 unsigned long flags;
1164 spin_lock_irqsave(&sc->sc_pm_lock, flags);
1165 if (conf->flags & IEEE80211_CONF_PS)
1166 ath9k_enable_ps(sc);
1168 ath9k_disable_ps(sc);
1169 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
1172 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
1173 if (conf->flags & IEEE80211_CONF_MONITOR) {
1174 ath_dbg(common, CONFIG, "Monitor mode is enabled\n");
1175 sc->sc_ah->is_monitoring = true;
1177 ath_dbg(common, CONFIG, "Monitor mode is disabled\n");
1178 sc->sc_ah->is_monitoring = false;
1182 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || reset_channel) {
1183 struct ieee80211_channel *curchan = hw->conf.channel;
1184 int pos = curchan->hw_value;
1186 unsigned long flags;
1189 old_pos = ah->curchan - &ah->channels[0];
1191 ath_dbg(common, CONFIG, "Set channel: %d MHz type: %d\n",
1192 curchan->center_freq, conf->channel_type);
1194 /* update survey stats for the old channel before switching */
1195 spin_lock_irqsave(&common->cc_lock, flags);
1196 ath_update_survey_stats(sc);
1197 spin_unlock_irqrestore(&common->cc_lock, flags);
1200 * Preserve the current channel values, before updating
1203 if (ah->curchan && (old_pos == pos))
1204 ath9k_hw_getnf(ah, ah->curchan);
1206 ath9k_cmn_update_ichannel(&sc->sc_ah->channels[pos],
1207 curchan, conf->channel_type);
1210 * If the operating channel changes, change the survey in-use flags
1212 * Reset the survey data for the new channel, unless we're switching
1213 * back to the operating channel from an off-channel operation.
1215 if (!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) &&
1216 sc->cur_survey != &sc->survey[pos]) {
1219 sc->cur_survey->filled &= ~SURVEY_INFO_IN_USE;
1221 sc->cur_survey = &sc->survey[pos];
1223 memset(sc->cur_survey, 0, sizeof(struct survey_info));
1224 sc->cur_survey->filled |= SURVEY_INFO_IN_USE;
1225 } else if (!(sc->survey[pos].filled & SURVEY_INFO_IN_USE)) {
1226 memset(&sc->survey[pos], 0, sizeof(struct survey_info));
1229 if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
1230 ath_err(common, "Unable to set channel\n");
1231 mutex_unlock(&sc->mutex);
1232 ath9k_ps_restore(sc);
1237 * The most recent snapshot of channel->noisefloor for the old
1238 * channel is only available after the hardware reset. Copy it to
1239 * the survey stats now.
1242 ath_update_survey_nf(sc, old_pos);
1245 if (changed & IEEE80211_CONF_CHANGE_POWER) {
1246 ath_dbg(common, CONFIG, "Set power: %d\n", conf->power_level);
1247 sc->config.txpowlimit = 2 * conf->power_level;
1248 ath9k_cmn_update_txpow(ah, sc->curtxpow,
1249 sc->config.txpowlimit, &sc->curtxpow);
1252 mutex_unlock(&sc->mutex);
1253 ath9k_ps_restore(sc);
1258 #define SUPPORTED_FILTERS \
1259 (FIF_PROMISC_IN_BSS | \
1264 FIF_BCN_PRBRESP_PROMISC | \
1268 /* FIXME: sc->sc_full_reset ? */
1269 static void ath9k_configure_filter(struct ieee80211_hw *hw,
1270 unsigned int changed_flags,
1271 unsigned int *total_flags,
1274 struct ath_softc *sc = hw->priv;
1277 changed_flags &= SUPPORTED_FILTERS;
1278 *total_flags &= SUPPORTED_FILTERS;
1280 sc->rx.rxfilter = *total_flags;
1281 ath9k_ps_wakeup(sc);
1282 rfilt = ath_calcrxfilter(sc);
1283 ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
1284 ath9k_ps_restore(sc);
1286 ath_dbg(ath9k_hw_common(sc->sc_ah), CONFIG, "Set HW RX filter: 0x%x\n",
1290 static int ath9k_sta_add(struct ieee80211_hw *hw,
1291 struct ieee80211_vif *vif,
1292 struct ieee80211_sta *sta)
1294 struct ath_softc *sc = hw->priv;
1295 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1296 struct ath_node *an = (struct ath_node *) sta->drv_priv;
1297 struct ieee80211_key_conf ps_key = { };
1299 ath_node_attach(sc, sta, vif);
1301 if (vif->type != NL80211_IFTYPE_AP &&
1302 vif->type != NL80211_IFTYPE_AP_VLAN)
1305 an->ps_key = ath_key_config(common, vif, sta, &ps_key);
1310 static void ath9k_del_ps_key(struct ath_softc *sc,
1311 struct ieee80211_vif *vif,
1312 struct ieee80211_sta *sta)
1314 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1315 struct ath_node *an = (struct ath_node *) sta->drv_priv;
1316 struct ieee80211_key_conf ps_key = { .hw_key_idx = an->ps_key };
1321 ath_key_delete(common, &ps_key);
1324 static int ath9k_sta_remove(struct ieee80211_hw *hw,
1325 struct ieee80211_vif *vif,
1326 struct ieee80211_sta *sta)
1328 struct ath_softc *sc = hw->priv;
1330 ath9k_del_ps_key(sc, vif, sta);
1331 ath_node_detach(sc, sta);
1336 static void ath9k_sta_notify(struct ieee80211_hw *hw,
1337 struct ieee80211_vif *vif,
1338 enum sta_notify_cmd cmd,
1339 struct ieee80211_sta *sta)
1341 struct ath_softc *sc = hw->priv;
1342 struct ath_node *an = (struct ath_node *) sta->drv_priv;
1344 if (!sta->ht_cap.ht_supported)
1348 case STA_NOTIFY_SLEEP:
1349 an->sleeping = true;
1350 ath_tx_aggr_sleep(sta, sc, an);
1352 case STA_NOTIFY_AWAKE:
1353 an->sleeping = false;
1354 ath_tx_aggr_wakeup(sc, an);
1359 static int ath9k_conf_tx(struct ieee80211_hw *hw,
1360 struct ieee80211_vif *vif, u16 queue,
1361 const struct ieee80211_tx_queue_params *params)
1363 struct ath_softc *sc = hw->priv;
1364 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1365 struct ath_txq *txq;
1366 struct ath9k_tx_queue_info qi;
1369 if (queue >= WME_NUM_AC)
1372 txq = sc->tx.txq_map[queue];
1374 ath9k_ps_wakeup(sc);
1375 mutex_lock(&sc->mutex);
1377 memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
1379 qi.tqi_aifs = params->aifs;
1380 qi.tqi_cwmin = params->cw_min;
1381 qi.tqi_cwmax = params->cw_max;
1382 qi.tqi_burstTime = params->txop * 32;
1384 ath_dbg(common, CONFIG,
1385 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1386 queue, txq->axq_qnum, params->aifs, params->cw_min,
1387 params->cw_max, params->txop);
1389 ath_update_max_aggr_framelen(sc, queue, qi.tqi_burstTime);
1390 ret = ath_txq_update(sc, txq->axq_qnum, &qi);
1392 ath_err(common, "TXQ Update failed\n");
1394 mutex_unlock(&sc->mutex);
1395 ath9k_ps_restore(sc);
1400 static int ath9k_set_key(struct ieee80211_hw *hw,
1401 enum set_key_cmd cmd,
1402 struct ieee80211_vif *vif,
1403 struct ieee80211_sta *sta,
1404 struct ieee80211_key_conf *key)
1406 struct ath_softc *sc = hw->priv;
1407 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1410 if (ath9k_modparam_nohwcrypt)
1413 if ((vif->type == NL80211_IFTYPE_ADHOC ||
1414 vif->type == NL80211_IFTYPE_MESH_POINT) &&
1415 (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
1416 key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
1417 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
1419 * For now, disable hw crypto for the RSN IBSS group keys. This
1420 * could be optimized in the future to use a modified key cache
1421 * design to support per-STA RX GTK, but until that gets
1422 * implemented, use of software crypto for group addressed
1423 * frames is a acceptable to allow RSN IBSS to be used.
1428 mutex_lock(&sc->mutex);
1429 ath9k_ps_wakeup(sc);
1430 ath_dbg(common, CONFIG, "Set HW Key\n");
1435 ath9k_del_ps_key(sc, vif, sta);
1437 ret = ath_key_config(common, vif, sta, key);
1439 key->hw_key_idx = ret;
1440 /* push IV and Michael MIC generation to stack */
1441 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1442 if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
1443 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1444 if (sc->sc_ah->sw_mgmt_crypto &&
1445 key->cipher == WLAN_CIPHER_SUITE_CCMP)
1446 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
1451 ath_key_delete(common, key);
1457 ath9k_ps_restore(sc);
1458 mutex_unlock(&sc->mutex);
1463 static void ath9k_set_assoc_state(struct ath_softc *sc,
1464 struct ieee80211_vif *vif)
1466 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1467 struct ath_vif *avp = (void *)vif->drv_priv;
1468 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1469 unsigned long flags;
1471 set_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags);
1472 avp->primary_sta_vif = true;
1475 * Set the AID, BSSID and do beacon-sync only when
1476 * the HW opmode is STATION.
1478 * But the primary bit is set above in any case.
1480 if (sc->sc_ah->opmode != NL80211_IFTYPE_STATION)
1483 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1484 common->curaid = bss_conf->aid;
1485 ath9k_hw_write_associd(sc->sc_ah);
1487 sc->last_rssi = ATH_RSSI_DUMMY_MARKER;
1488 sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
1490 spin_lock_irqsave(&sc->sc_pm_lock, flags);
1491 sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON;
1492 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
1494 ath_dbg(common, CONFIG,
1495 "Primary Station interface: %pM, BSSID: %pM\n",
1496 vif->addr, common->curbssid);
1499 static void ath9k_bss_assoc_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
1501 struct ath_softc *sc = data;
1502 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1504 if (test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags))
1507 if (bss_conf->assoc)
1508 ath9k_set_assoc_state(sc, vif);
1511 static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
1512 struct ieee80211_vif *vif,
1513 struct ieee80211_bss_conf *bss_conf,
1517 (BSS_CHANGED_ASSOC | \
1518 BSS_CHANGED_IBSS | \
1519 BSS_CHANGED_BEACON_ENABLED)
1521 struct ath_softc *sc = hw->priv;
1522 struct ath_hw *ah = sc->sc_ah;
1523 struct ath_common *common = ath9k_hw_common(ah);
1524 struct ath_vif *avp = (void *)vif->drv_priv;
1527 ath9k_ps_wakeup(sc);
1528 mutex_lock(&sc->mutex);
1530 if (changed & BSS_CHANGED_ASSOC) {
1531 ath_dbg(common, CONFIG, "BSSID %pM Changed ASSOC %d\n",
1532 bss_conf->bssid, bss_conf->assoc);
1534 if (avp->primary_sta_vif && !bss_conf->assoc) {
1535 clear_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags);
1536 avp->primary_sta_vif = false;
1538 if (ah->opmode == NL80211_IFTYPE_STATION)
1539 clear_bit(SC_OP_BEACONS, &sc->sc_flags);
1542 ieee80211_iterate_active_interfaces_atomic(sc->hw,
1543 ath9k_bss_assoc_iter, sc);
1545 if (!test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags) &&
1546 ah->opmode == NL80211_IFTYPE_STATION) {
1547 memset(common->curbssid, 0, ETH_ALEN);
1549 ath9k_hw_write_associd(sc->sc_ah);
1553 if (changed & BSS_CHANGED_IBSS) {
1554 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1555 common->curaid = bss_conf->aid;
1556 ath9k_hw_write_associd(sc->sc_ah);
1559 if ((changed & BSS_CHANGED_BEACON_ENABLED) ||
1560 (changed & BSS_CHANGED_BEACON_INT)) {
1561 if (ah->opmode == NL80211_IFTYPE_AP &&
1562 bss_conf->enable_beacon)
1563 ath9k_set_tsfadjust(sc, vif);
1564 if (ath9k_allow_beacon_config(sc, vif))
1565 ath9k_beacon_config(sc, vif, changed);
1568 if (changed & BSS_CHANGED_ERP_SLOT) {
1569 if (bss_conf->use_short_slot)
1573 if (vif->type == NL80211_IFTYPE_AP) {
1575 * Defer update, so that connected stations can adjust
1576 * their settings at the same time.
1577 * See beacon.c for more details
1579 sc->beacon.slottime = slottime;
1580 sc->beacon.updateslot = UPDATE;
1582 ah->slottime = slottime;
1583 ath9k_hw_init_global_settings(ah);
1587 if (changed & CHECK_ANI)
1590 mutex_unlock(&sc->mutex);
1591 ath9k_ps_restore(sc);
1596 static u64 ath9k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1598 struct ath_softc *sc = hw->priv;
1601 mutex_lock(&sc->mutex);
1602 ath9k_ps_wakeup(sc);
1603 tsf = ath9k_hw_gettsf64(sc->sc_ah);
1604 ath9k_ps_restore(sc);
1605 mutex_unlock(&sc->mutex);
1610 static void ath9k_set_tsf(struct ieee80211_hw *hw,
1611 struct ieee80211_vif *vif,
1614 struct ath_softc *sc = hw->priv;
1616 mutex_lock(&sc->mutex);
1617 ath9k_ps_wakeup(sc);
1618 ath9k_hw_settsf64(sc->sc_ah, tsf);
1619 ath9k_ps_restore(sc);
1620 mutex_unlock(&sc->mutex);
1623 static void ath9k_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1625 struct ath_softc *sc = hw->priv;
1627 mutex_lock(&sc->mutex);
1629 ath9k_ps_wakeup(sc);
1630 ath9k_hw_reset_tsf(sc->sc_ah);
1631 ath9k_ps_restore(sc);
1633 mutex_unlock(&sc->mutex);
1636 static int ath9k_ampdu_action(struct ieee80211_hw *hw,
1637 struct ieee80211_vif *vif,
1638 enum ieee80211_ampdu_mlme_action action,
1639 struct ieee80211_sta *sta,
1640 u16 tid, u16 *ssn, u8 buf_size)
1642 struct ath_softc *sc = hw->priv;
1648 case IEEE80211_AMPDU_RX_START:
1650 case IEEE80211_AMPDU_RX_STOP:
1652 case IEEE80211_AMPDU_TX_START:
1653 ath9k_ps_wakeup(sc);
1654 ret = ath_tx_aggr_start(sc, sta, tid, ssn);
1656 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1657 ath9k_ps_restore(sc);
1659 case IEEE80211_AMPDU_TX_STOP:
1660 ath9k_ps_wakeup(sc);
1661 ath_tx_aggr_stop(sc, sta, tid);
1662 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1663 ath9k_ps_restore(sc);
1665 case IEEE80211_AMPDU_TX_OPERATIONAL:
1666 ath9k_ps_wakeup(sc);
1667 ath_tx_aggr_resume(sc, sta, tid);
1668 ath9k_ps_restore(sc);
1671 ath_err(ath9k_hw_common(sc->sc_ah), "Unknown AMPDU action\n");
1679 static int ath9k_get_survey(struct ieee80211_hw *hw, int idx,
1680 struct survey_info *survey)
1682 struct ath_softc *sc = hw->priv;
1683 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1684 struct ieee80211_supported_band *sband;
1685 struct ieee80211_channel *chan;
1686 unsigned long flags;
1689 spin_lock_irqsave(&common->cc_lock, flags);
1691 ath_update_survey_stats(sc);
1693 sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
1694 if (sband && idx >= sband->n_channels) {
1695 idx -= sband->n_channels;
1700 sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];
1702 if (!sband || idx >= sband->n_channels) {
1703 spin_unlock_irqrestore(&common->cc_lock, flags);
1707 chan = &sband->channels[idx];
1708 pos = chan->hw_value;
1709 memcpy(survey, &sc->survey[pos], sizeof(*survey));
1710 survey->channel = chan;
1711 spin_unlock_irqrestore(&common->cc_lock, flags);
1716 static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
1718 struct ath_softc *sc = hw->priv;
1719 struct ath_hw *ah = sc->sc_ah;
1721 mutex_lock(&sc->mutex);
1722 ah->coverage_class = coverage_class;
1724 ath9k_ps_wakeup(sc);
1725 ath9k_hw_init_global_settings(ah);
1726 ath9k_ps_restore(sc);
1728 mutex_unlock(&sc->mutex);
1731 static void ath9k_flush(struct ieee80211_hw *hw, bool drop)
1733 struct ath_softc *sc = hw->priv;
1734 struct ath_hw *ah = sc->sc_ah;
1735 struct ath_common *common = ath9k_hw_common(ah);
1736 int timeout = 200; /* ms */
1740 mutex_lock(&sc->mutex);
1741 cancel_delayed_work_sync(&sc->tx_complete_work);
1743 if (ah->ah_flags & AH_UNPLUGGED) {
1744 ath_dbg(common, ANY, "Device has been unplugged!\n");
1745 mutex_unlock(&sc->mutex);
1749 if (test_bit(SC_OP_INVALID, &sc->sc_flags)) {
1750 ath_dbg(common, ANY, "Device not present\n");
1751 mutex_unlock(&sc->mutex);
1755 for (j = 0; j < timeout; j++) {
1759 usleep_range(1000, 2000);
1761 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
1762 if (!ATH_TXQ_SETUP(sc, i))
1765 npend = ath9k_has_pending_frames(sc, &sc->tx.txq[i]);
1776 ath9k_ps_wakeup(sc);
1777 spin_lock_bh(&sc->sc_pcu_lock);
1778 drain_txq = ath_drain_all_txq(sc, false);
1779 spin_unlock_bh(&sc->sc_pcu_lock);
1782 ath_reset(sc, false);
1784 ath9k_ps_restore(sc);
1785 ieee80211_wake_queues(hw);
1788 ieee80211_queue_delayed_work(hw, &sc->tx_complete_work, 0);
1789 mutex_unlock(&sc->mutex);
1792 static bool ath9k_tx_frames_pending(struct ieee80211_hw *hw)
1794 struct ath_softc *sc = hw->priv;
1797 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
1798 if (!ATH_TXQ_SETUP(sc, i))
1801 if (ath9k_has_pending_frames(sc, &sc->tx.txq[i]))
1807 static int ath9k_tx_last_beacon(struct ieee80211_hw *hw)
1809 struct ath_softc *sc = hw->priv;
1810 struct ath_hw *ah = sc->sc_ah;
1811 struct ieee80211_vif *vif;
1812 struct ath_vif *avp;
1814 struct ath_tx_status ts;
1815 bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
1818 vif = sc->beacon.bslot[0];
1822 if (!vif->bss_conf.enable_beacon)
1825 avp = (void *)vif->drv_priv;
1827 if (!sc->beacon.tx_processed && !edma) {
1828 tasklet_disable(&sc->bcon_tasklet);
1831 if (!bf || !bf->bf_mpdu)
1834 status = ath9k_hw_txprocdesc(ah, bf->bf_desc, &ts);
1835 if (status == -EINPROGRESS)
1838 sc->beacon.tx_processed = true;
1839 sc->beacon.tx_last = !(ts.ts_status & ATH9K_TXERR_MASK);
1842 tasklet_enable(&sc->bcon_tasklet);
1845 return sc->beacon.tx_last;
1848 static int ath9k_get_stats(struct ieee80211_hw *hw,
1849 struct ieee80211_low_level_stats *stats)
1851 struct ath_softc *sc = hw->priv;
1852 struct ath_hw *ah = sc->sc_ah;
1853 struct ath9k_mib_stats *mib_stats = &ah->ah_mibStats;
1855 stats->dot11ACKFailureCount = mib_stats->ackrcv_bad;
1856 stats->dot11RTSFailureCount = mib_stats->rts_bad;
1857 stats->dot11FCSErrorCount = mib_stats->fcs_bad;
1858 stats->dot11RTSSuccessCount = mib_stats->rts_good;
1862 static u32 fill_chainmask(u32 cap, u32 new)
1867 for (i = 0; cap && new; i++, cap >>= 1) {
1868 if (!(cap & BIT(0)))
1880 static bool validate_antenna_mask(struct ath_hw *ah, u32 val)
1882 switch (val & 0x7) {
1888 return (ah->caps.rx_chainmask == 1);
1894 static int ath9k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
1896 struct ath_softc *sc = hw->priv;
1897 struct ath_hw *ah = sc->sc_ah;
1899 if (ah->caps.rx_chainmask != 1)
1902 if (!validate_antenna_mask(ah, rx_ant) || !tx_ant)
1905 sc->ant_rx = rx_ant;
1906 sc->ant_tx = tx_ant;
1908 if (ah->caps.rx_chainmask == 1)
1911 /* AR9100 runs into calibration issues if not all rx chains are enabled */
1912 if (AR_SREV_9100(ah))
1913 ah->rxchainmask = 0x7;
1915 ah->rxchainmask = fill_chainmask(ah->caps.rx_chainmask, rx_ant);
1917 ah->txchainmask = fill_chainmask(ah->caps.tx_chainmask, tx_ant);
1918 ath9k_reload_chainmask_settings(sc);
1923 static int ath9k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
1925 struct ath_softc *sc = hw->priv;
1927 *tx_ant = sc->ant_tx;
1928 *rx_ant = sc->ant_rx;
1932 #ifdef CONFIG_ATH9K_DEBUGFS
1934 /* Ethtool support for get-stats */
1936 #define AMKSTR(nm) #nm "_BE", #nm "_BK", #nm "_VI", #nm "_VO"
1937 static const char ath9k_gstrings_stats[][ETH_GSTRING_LEN] = {
1944 AMKSTR(d_tx_mpdus_queued),
1945 AMKSTR(d_tx_mpdus_completed),
1946 AMKSTR(d_tx_mpdu_xretries),
1947 AMKSTR(d_tx_aggregates),
1948 AMKSTR(d_tx_ampdus_queued_hw),
1949 AMKSTR(d_tx_ampdus_queued_sw),
1950 AMKSTR(d_tx_ampdus_completed),
1951 AMKSTR(d_tx_ampdu_retries),
1952 AMKSTR(d_tx_ampdu_xretries),
1953 AMKSTR(d_tx_fifo_underrun),
1954 AMKSTR(d_tx_op_exceeded),
1955 AMKSTR(d_tx_timer_expiry),
1956 AMKSTR(d_tx_desc_cfg_err),
1957 AMKSTR(d_tx_data_underrun),
1958 AMKSTR(d_tx_delim_underrun),
1960 "d_rx_decrypt_crc_err",
1963 "d_rx_pre_delim_crc_err",
1964 "d_rx_post_delim_crc_err",
1965 "d_rx_decrypt_busy_err",
1967 "d_rx_phyerr_radar",
1968 "d_rx_phyerr_ofdm_timing",
1969 "d_rx_phyerr_cck_timing",
1972 #define ATH9K_SSTATS_LEN ARRAY_SIZE(ath9k_gstrings_stats)
1974 static void ath9k_get_et_strings(struct ieee80211_hw *hw,
1975 struct ieee80211_vif *vif,
1978 if (sset == ETH_SS_STATS)
1979 memcpy(data, *ath9k_gstrings_stats,
1980 sizeof(ath9k_gstrings_stats));
1983 static int ath9k_get_et_sset_count(struct ieee80211_hw *hw,
1984 struct ieee80211_vif *vif, int sset)
1986 if (sset == ETH_SS_STATS)
1987 return ATH9K_SSTATS_LEN;
1991 #define PR_QNUM(_n) (sc->tx.txq_map[_n]->axq_qnum)
1992 #define AWDATA(elem) \
1994 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_BE)].elem; \
1995 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_BK)].elem; \
1996 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_VI)].elem; \
1997 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_VO)].elem; \
2000 #define AWDATA_RX(elem) \
2002 data[i++] = sc->debug.stats.rxstats.elem; \
2005 static void ath9k_get_et_stats(struct ieee80211_hw *hw,
2006 struct ieee80211_vif *vif,
2007 struct ethtool_stats *stats, u64 *data)
2009 struct ath_softc *sc = hw->priv;
2012 data[i++] = (sc->debug.stats.txstats[PR_QNUM(WME_AC_BE)].tx_pkts_all +
2013 sc->debug.stats.txstats[PR_QNUM(WME_AC_BK)].tx_pkts_all +
2014 sc->debug.stats.txstats[PR_QNUM(WME_AC_VI)].tx_pkts_all +
2015 sc->debug.stats.txstats[PR_QNUM(WME_AC_VO)].tx_pkts_all);
2016 data[i++] = (sc->debug.stats.txstats[PR_QNUM(WME_AC_BE)].tx_bytes_all +
2017 sc->debug.stats.txstats[PR_QNUM(WME_AC_BK)].tx_bytes_all +
2018 sc->debug.stats.txstats[PR_QNUM(WME_AC_VI)].tx_bytes_all +
2019 sc->debug.stats.txstats[PR_QNUM(WME_AC_VO)].tx_bytes_all);
2020 AWDATA_RX(rx_pkts_all);
2021 AWDATA_RX(rx_bytes_all);
2023 AWDATA(tx_pkts_all);
2024 AWDATA(tx_bytes_all);
2029 AWDATA(a_queued_hw);
2030 AWDATA(a_queued_sw);
2031 AWDATA(a_completed);
2034 AWDATA(fifo_underrun);
2037 AWDATA(desc_cfg_err);
2038 AWDATA(data_underrun);
2039 AWDATA(delim_underrun);
2041 AWDATA_RX(decrypt_crc_err);
2044 AWDATA_RX(pre_delim_crc_err);
2045 AWDATA_RX(post_delim_crc_err);
2046 AWDATA_RX(decrypt_busy_err);
2048 AWDATA_RX(phy_err_stats[ATH9K_PHYERR_RADAR]);
2049 AWDATA_RX(phy_err_stats[ATH9K_PHYERR_OFDM_TIMING]);
2050 AWDATA_RX(phy_err_stats[ATH9K_PHYERR_CCK_TIMING]);
2052 WARN_ON(i != ATH9K_SSTATS_LEN);
2055 /* End of ethtool get-stats functions */
2060 #ifdef CONFIG_PM_SLEEP
2062 static void ath9k_wow_map_triggers(struct ath_softc *sc,
2063 struct cfg80211_wowlan *wowlan,
2066 if (wowlan->disconnect)
2067 *wow_triggers |= AH_WOW_LINK_CHANGE |
2069 if (wowlan->magic_pkt)
2070 *wow_triggers |= AH_WOW_MAGIC_PATTERN_EN;
2072 if (wowlan->n_patterns)
2073 *wow_triggers |= AH_WOW_USER_PATTERN_EN;
2075 sc->wow_enabled = *wow_triggers;
2079 static void ath9k_wow_add_disassoc_deauth_pattern(struct ath_softc *sc)
2081 struct ath_hw *ah = sc->sc_ah;
2082 struct ath_common *common = ath9k_hw_common(ah);
2083 struct ath9k_hw_capabilities *pcaps = &ah->caps;
2084 int pattern_count = 0;
2086 u8 dis_deauth_pattern[MAX_PATTERN_SIZE];
2087 u8 dis_deauth_mask[MAX_PATTERN_SIZE];
2089 memset(dis_deauth_pattern, 0, MAX_PATTERN_SIZE);
2090 memset(dis_deauth_mask, 0, MAX_PATTERN_SIZE);
2093 * Create Dissassociate / Deauthenticate packet filter
2095 * 2 bytes 2 byte 6 bytes 6 bytes 6 bytes
2096 * +--------------+----------+---------+--------+--------+----
2097 * + Frame Control+ Duration + DA + SA + BSSID +
2098 * +--------------+----------+---------+--------+--------+----
2100 * The above is the management frame format for disassociate/
2101 * deauthenticate pattern, from this we need to match the first byte
2102 * of 'Frame Control' and DA, SA, and BSSID fields
2103 * (skipping 2nd byte of FC and Duration feild.
2105 * Disassociate pattern
2106 * --------------------
2107 * Frame control = 00 00 1010
2108 * DA, SA, BSSID = x:x:x:x:x:x
2109 * Pattern will be A0000000 | x:x:x:x:x:x | x:x:x:x:x:x
2110 * | x:x:x:x:x:x -- 22 bytes
2112 * Deauthenticate pattern
2113 * ----------------------
2114 * Frame control = 00 00 1100
2115 * DA, SA, BSSID = x:x:x:x:x:x
2116 * Pattern will be C0000000 | x:x:x:x:x:x | x:x:x:x:x:x
2117 * | x:x:x:x:x:x -- 22 bytes
2120 /* Create Disassociate Pattern first */
2124 /* Fill out the mask with all FF's */
2126 for (i = 0; i < MAX_PATTERN_MASK_SIZE; i++)
2127 dis_deauth_mask[i] = 0xff;
2129 /* copy the first byte of frame control field */
2130 dis_deauth_pattern[byte_cnt] = 0xa0;
2133 /* skip 2nd byte of frame control and Duration field */
2137 * need not match the destination mac address, it can be a broadcast
2138 * mac address or an unicast to this station
2142 /* copy the source mac address */
2143 memcpy((dis_deauth_pattern + byte_cnt), common->curbssid, ETH_ALEN);
2147 /* copy the bssid, its same as the source mac address */
2149 memcpy((dis_deauth_pattern + byte_cnt), common->curbssid, ETH_ALEN);
2151 /* Create Disassociate pattern mask */
2153 if (pcaps->hw_caps & ATH9K_HW_WOW_PATTERN_MATCH_EXACT) {
2155 if (pcaps->hw_caps & ATH9K_HW_WOW_PATTERN_MATCH_DWORD) {
2157 * for AR9280, because of hardware limitation, the
2158 * first 4 bytes have to be matched for all patterns.
2159 * the mask for disassociation and de-auth pattern
2160 * matching need to enable the first 4 bytes.
2161 * also the duration field needs to be filled.
2163 dis_deauth_mask[0] = 0xf0;
2166 * fill in duration field
2167 FIXME: what is the exact value ?
2169 dis_deauth_pattern[2] = 0xff;
2170 dis_deauth_pattern[3] = 0xff;
2172 dis_deauth_mask[0] = 0xfe;
2175 dis_deauth_mask[1] = 0x03;
2176 dis_deauth_mask[2] = 0xc0;
2178 dis_deauth_mask[0] = 0xef;
2179 dis_deauth_mask[1] = 0x3f;
2180 dis_deauth_mask[2] = 0x00;
2181 dis_deauth_mask[3] = 0xfc;
2184 ath_dbg(common, WOW, "Adding disassoc/deauth patterns for WoW\n");
2186 ath9k_hw_wow_apply_pattern(ah, dis_deauth_pattern, dis_deauth_mask,
2187 pattern_count, byte_cnt);
2191 * for de-authenticate pattern, only the first byte of the frame
2192 * control field gets changed from 0xA0 to 0xC0
2194 dis_deauth_pattern[0] = 0xC0;
2196 ath9k_hw_wow_apply_pattern(ah, dis_deauth_pattern, dis_deauth_mask,
2197 pattern_count, byte_cnt);
2201 static void ath9k_wow_add_pattern(struct ath_softc *sc,
2202 struct cfg80211_wowlan *wowlan)
2204 struct ath_hw *ah = sc->sc_ah;
2205 struct ath9k_wow_pattern *wow_pattern = NULL;
2206 struct cfg80211_wowlan_trig_pkt_pattern *patterns = wowlan->patterns;
2210 if (!wowlan->n_patterns)
2214 * Add the new user configured patterns
2216 for (i = 0; i < wowlan->n_patterns; i++) {
2218 wow_pattern = kzalloc(sizeof(*wow_pattern), GFP_KERNEL);
2224 * TODO: convert the generic user space pattern to
2225 * appropriate chip specific/802.11 pattern.
2228 mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
2229 memset(wow_pattern->pattern_bytes, 0, MAX_PATTERN_SIZE);
2230 memset(wow_pattern->mask_bytes, 0, MAX_PATTERN_SIZE);
2231 memcpy(wow_pattern->pattern_bytes, patterns[i].pattern,
2232 patterns[i].pattern_len);
2233 memcpy(wow_pattern->mask_bytes, patterns[i].mask, mask_len);
2234 wow_pattern->pattern_len = patterns[i].pattern_len;
2237 * just need to take care of deauth and disssoc pattern,
2238 * make sure we don't overwrite them.
2241 ath9k_hw_wow_apply_pattern(ah, wow_pattern->pattern_bytes,
2242 wow_pattern->mask_bytes,
2244 wow_pattern->pattern_len);
2251 static int ath9k_suspend(struct ieee80211_hw *hw,
2252 struct cfg80211_wowlan *wowlan)
2254 struct ath_softc *sc = hw->priv;
2255 struct ath_hw *ah = sc->sc_ah;
2256 struct ath_common *common = ath9k_hw_common(ah);
2257 u32 wow_triggers_enabled = 0;
2260 mutex_lock(&sc->mutex);
2262 ath_cancel_work(sc);
2264 del_timer_sync(&sc->rx_poll_timer);
2266 if (test_bit(SC_OP_INVALID, &sc->sc_flags)) {
2267 ath_dbg(common, ANY, "Device not present\n");
2272 if (WARN_ON(!wowlan)) {
2273 ath_dbg(common, WOW, "None of the WoW triggers enabled\n");
2278 if (!device_can_wakeup(sc->dev)) {
2279 ath_dbg(common, WOW, "device_can_wakeup failed, WoW is not enabled\n");
2285 * none of the sta vifs are associated
2286 * and we are not currently handling multivif
2287 * cases, for instance we have to seperately
2288 * configure 'keep alive frame' for each
2292 if (!test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags)) {
2293 ath_dbg(common, WOW, "None of the STA vifs are associated\n");
2298 if (sc->nvifs > 1) {
2299 ath_dbg(common, WOW, "WoW for multivif is not yet supported\n");
2304 ath9k_wow_map_triggers(sc, wowlan, &wow_triggers_enabled);
2306 ath_dbg(common, WOW, "WoW triggers enabled 0x%x\n",
2307 wow_triggers_enabled);
2309 ath9k_ps_wakeup(sc);
2311 ath9k_stop_btcoex(sc);
2314 * Enable wake up on recieving disassoc/deauth
2317 ath9k_wow_add_disassoc_deauth_pattern(sc);
2319 if (wow_triggers_enabled & AH_WOW_USER_PATTERN_EN)
2320 ath9k_wow_add_pattern(sc, wowlan);
2322 spin_lock_bh(&sc->sc_pcu_lock);
2324 * To avoid false wake, we enable beacon miss interrupt only
2325 * when we go to sleep. We save the current interrupt mask
2326 * so we can restore it after the system wakes up
2328 sc->wow_intr_before_sleep = ah->imask;
2329 ah->imask &= ~ATH9K_INT_GLOBAL;
2330 ath9k_hw_disable_interrupts(ah);
2331 ah->imask = ATH9K_INT_BMISS | ATH9K_INT_GLOBAL;
2332 ath9k_hw_set_interrupts(ah);
2333 ath9k_hw_enable_interrupts(ah);
2335 spin_unlock_bh(&sc->sc_pcu_lock);
2338 * we can now sync irq and kill any running tasklets, since we already
2339 * disabled interrupts and not holding a spin lock
2341 synchronize_irq(sc->irq);
2342 tasklet_kill(&sc->intr_tq);
2344 ath9k_hw_wow_enable(ah, wow_triggers_enabled);
2346 ath9k_ps_restore(sc);
2347 ath_dbg(common, ANY, "WoW enabled in ath9k\n");
2348 atomic_inc(&sc->wow_sleep_proc_intr);
2351 mutex_unlock(&sc->mutex);
2355 static int ath9k_resume(struct ieee80211_hw *hw)
2357 struct ath_softc *sc = hw->priv;
2358 struct ath_hw *ah = sc->sc_ah;
2359 struct ath_common *common = ath9k_hw_common(ah);
2362 mutex_lock(&sc->mutex);
2364 ath9k_ps_wakeup(sc);
2366 spin_lock_bh(&sc->sc_pcu_lock);
2368 ath9k_hw_disable_interrupts(ah);
2369 ah->imask = sc->wow_intr_before_sleep;
2370 ath9k_hw_set_interrupts(ah);
2371 ath9k_hw_enable_interrupts(ah);
2373 spin_unlock_bh(&sc->sc_pcu_lock);
2375 wow_status = ath9k_hw_wow_wakeup(ah);
2377 if (atomic_read(&sc->wow_got_bmiss_intr) == 0) {
2379 * some devices may not pick beacon miss
2380 * as the reason they woke up so we add
2381 * that here for that shortcoming.
2383 wow_status |= AH_WOW_BEACON_MISS;
2384 atomic_dec(&sc->wow_got_bmiss_intr);
2385 ath_dbg(common, ANY, "Beacon miss interrupt picked up during WoW sleep\n");
2388 atomic_dec(&sc->wow_sleep_proc_intr);
2391 ath_dbg(common, ANY, "Waking up due to WoW triggers %s with WoW status = %x\n",
2392 ath9k_hw_wow_event_to_string(wow_status), wow_status);
2395 ath_restart_work(sc);
2396 ath9k_start_btcoex(sc);
2398 ath9k_ps_restore(sc);
2399 mutex_unlock(&sc->mutex);
2404 static void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled)
2406 struct ath_softc *sc = hw->priv;
2408 mutex_lock(&sc->mutex);
2409 device_init_wakeup(sc->dev, 1);
2410 device_set_wakeup_enable(sc->dev, enabled);
2411 mutex_unlock(&sc->mutex);
2416 struct ieee80211_ops ath9k_ops = {
2418 .start = ath9k_start,
2420 .add_interface = ath9k_add_interface,
2421 .change_interface = ath9k_change_interface,
2422 .remove_interface = ath9k_remove_interface,
2423 .config = ath9k_config,
2424 .configure_filter = ath9k_configure_filter,
2425 .sta_add = ath9k_sta_add,
2426 .sta_remove = ath9k_sta_remove,
2427 .sta_notify = ath9k_sta_notify,
2428 .conf_tx = ath9k_conf_tx,
2429 .bss_info_changed = ath9k_bss_info_changed,
2430 .set_key = ath9k_set_key,
2431 .get_tsf = ath9k_get_tsf,
2432 .set_tsf = ath9k_set_tsf,
2433 .reset_tsf = ath9k_reset_tsf,
2434 .ampdu_action = ath9k_ampdu_action,
2435 .get_survey = ath9k_get_survey,
2436 .rfkill_poll = ath9k_rfkill_poll_state,
2437 .set_coverage_class = ath9k_set_coverage_class,
2438 .flush = ath9k_flush,
2439 .tx_frames_pending = ath9k_tx_frames_pending,
2440 .tx_last_beacon = ath9k_tx_last_beacon,
2441 .get_stats = ath9k_get_stats,
2442 .set_antenna = ath9k_set_antenna,
2443 .get_antenna = ath9k_get_antenna,
2445 #ifdef CONFIG_PM_SLEEP
2446 .suspend = ath9k_suspend,
2447 .resume = ath9k_resume,
2448 .set_wakeup = ath9k_set_wakeup,
2451 #ifdef CONFIG_ATH9K_DEBUGFS
2452 .get_et_sset_count = ath9k_get_et_sset_count,
2453 .get_et_stats = ath9k_get_et_stats,
2454 .get_et_strings = ath9k_get_et_strings,