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 |
136 mode = ATH9K_PM_NETWORK_SLEEP;
137 if (ath9k_hw_btcoex_is_enabled(sc->sc_ah))
138 ath9k_btcoex_stop_gen_timer(sc);
143 spin_lock(&common->cc_lock);
144 ath_hw_cycle_counters_update(common);
145 spin_unlock(&common->cc_lock);
147 ath9k_hw_setpower(sc->sc_ah, mode);
150 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
153 static void __ath_cancel_work(struct ath_softc *sc)
155 cancel_work_sync(&sc->paprd_work);
156 cancel_work_sync(&sc->hw_check_work);
157 cancel_delayed_work_sync(&sc->tx_complete_work);
158 cancel_delayed_work_sync(&sc->hw_pll_work);
160 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
161 if (ath9k_hw_mci_is_enabled(sc->sc_ah))
162 cancel_work_sync(&sc->mci_work);
166 static void ath_cancel_work(struct ath_softc *sc)
168 __ath_cancel_work(sc);
169 cancel_work_sync(&sc->hw_reset_work);
172 static void ath_restart_work(struct ath_softc *sc)
174 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
176 if (AR_SREV_9340(sc->sc_ah) || AR_SREV_9330(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)
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_hw_disable_interrupts(ah);
197 if (!ath_drain_all_txq(sc))
200 if (!ath_stoprecv(sc))
206 static bool ath_complete_reset(struct ath_softc *sc, bool start)
208 struct ath_hw *ah = sc->sc_ah;
209 struct ath_common *common = ath9k_hw_common(ah);
212 if (ath_startrecv(sc) != 0) {
213 ath_err(common, "Unable to restart recv logic\n");
217 ath9k_cmn_update_txpow(ah, sc->curtxpow,
218 sc->config.txpowlimit, &sc->curtxpow);
220 clear_bit(SC_OP_HW_RESET, &sc->sc_flags);
221 ath9k_hw_set_interrupts(ah);
222 ath9k_hw_enable_interrupts(ah);
224 if (!(sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) && start) {
225 if (!test_bit(SC_OP_BEACONS, &sc->sc_flags))
228 if (ah->opmode == NL80211_IFTYPE_STATION &&
229 test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags)) {
230 spin_lock_irqsave(&sc->sc_pm_lock, flags);
231 sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON;
232 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
234 ath9k_set_beacon(sc);
237 ath_restart_work(sc);
240 ieee80211_wake_queues(sc->hw);
245 static int ath_reset_internal(struct ath_softc *sc, struct ath9k_channel *hchan)
247 struct ath_hw *ah = sc->sc_ah;
248 struct ath_common *common = ath9k_hw_common(ah);
249 struct ath9k_hw_cal_data *caldata = NULL;
253 __ath_cancel_work(sc);
255 tasklet_disable(&sc->intr_tq);
256 spin_lock_bh(&sc->sc_pcu_lock);
258 if (!(sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)) {
260 caldata = &sc->caldata;
268 if (!ath_prepare_reset(sc))
271 ath_dbg(common, CONFIG, "Reset to %u MHz, HT40: %d fastcc: %d\n",
272 hchan->channel, IS_CHAN_HT40(hchan), fastcc);
274 r = ath9k_hw_reset(ah, hchan, caldata, fastcc);
277 "Unable to reset channel, reset status %d\n", r);
279 ath9k_hw_enable_interrupts(ah);
280 ath9k_queue_reset(sc, RESET_TYPE_BB_HANG);
285 if (ath9k_hw_mci_is_enabled(sc->sc_ah) &&
286 (sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL))
287 ath9k_mci_set_txpower(sc, true, false);
289 if (!ath_complete_reset(sc, true))
293 spin_unlock_bh(&sc->sc_pcu_lock);
294 tasklet_enable(&sc->intr_tq);
301 * Set/change channels. If the channel is really being changed, it's done
302 * by reseting the chip. To accomplish this we must first cleanup any pending
303 * DMA, then restart stuff.
305 static int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
306 struct ath9k_channel *hchan)
310 if (test_bit(SC_OP_INVALID, &sc->sc_flags))
313 r = ath_reset_internal(sc, hchan);
318 static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta,
319 struct ieee80211_vif *vif)
322 an = (struct ath_node *)sta->drv_priv;
328 ath_tx_node_init(sc, an);
330 if (sta->ht_cap.ht_supported) {
331 an->maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
332 sta->ht_cap.ampdu_factor);
333 an->mpdudensity = ath9k_parse_mpdudensity(sta->ht_cap.ampdu_density);
337 static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
339 struct ath_node *an = (struct ath_node *)sta->drv_priv;
340 ath_tx_node_cleanup(sc, an);
343 void ath9k_tasklet(unsigned long data)
345 struct ath_softc *sc = (struct ath_softc *)data;
346 struct ath_hw *ah = sc->sc_ah;
347 struct ath_common *common = ath9k_hw_common(ah);
348 enum ath_reset_type type;
350 u32 status = sc->intrstatus;
354 spin_lock(&sc->sc_pcu_lock);
356 if ((status & ATH9K_INT_FATAL) ||
357 (status & ATH9K_INT_BB_WATCHDOG)) {
359 if (status & ATH9K_INT_FATAL)
360 type = RESET_TYPE_FATAL_INT;
362 type = RESET_TYPE_BB_WATCHDOG;
364 ath9k_queue_reset(sc, type);
367 * Increment the ref. counter here so that
368 * interrupts are enabled in the reset routine.
370 atomic_inc(&ah->intr_ref_cnt);
371 ath_dbg(common, ANY, "FATAL: Skipping interrupts\n");
375 spin_lock_irqsave(&sc->sc_pm_lock, flags);
376 if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
378 * TSF sync does not look correct; remain awake to sync with
381 ath_dbg(common, PS, "TSFOOR - Sync with next Beacon\n");
382 sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC;
384 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
386 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
387 rxmask = (ATH9K_INT_RXHP | ATH9K_INT_RXLP | ATH9K_INT_RXEOL |
390 rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
392 if (status & rxmask) {
393 /* Check for high priority Rx first */
394 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
395 (status & ATH9K_INT_RXHP))
396 ath_rx_tasklet(sc, 0, true);
398 ath_rx_tasklet(sc, 0, false);
401 if (status & ATH9K_INT_TX) {
402 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
403 ath_tx_edma_tasklet(sc);
408 ath9k_btcoex_handle_interrupt(sc, status);
410 /* re-enable hardware interrupt */
411 ath9k_hw_enable_interrupts(ah);
413 spin_unlock(&sc->sc_pcu_lock);
414 ath9k_ps_restore(sc);
417 irqreturn_t ath_isr(int irq, void *dev)
419 #define SCHED_INTR ( \
421 ATH9K_INT_BB_WATCHDOG | \
431 ATH9K_INT_GENTIMER | \
434 struct ath_softc *sc = dev;
435 struct ath_hw *ah = sc->sc_ah;
436 struct ath_common *common = ath9k_hw_common(ah);
437 enum ath9k_int status;
441 * The hardware is not ready/present, don't
442 * touch anything. Note this can happen early
443 * on if the IRQ is shared.
445 if (test_bit(SC_OP_INVALID, &sc->sc_flags))
448 /* shared irq, not for us */
450 if (!ath9k_hw_intrpend(ah))
453 if (test_bit(SC_OP_HW_RESET, &sc->sc_flags)) {
454 ath9k_hw_kill_interrupts(ah);
459 * Figure out the reason(s) for the interrupt. Note
460 * that the hal returns a pseudo-ISR that may include
461 * bits we haven't explicitly enabled so we mask the
462 * value to insure we only process bits we requested.
464 ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */
465 status &= ah->imask; /* discard unasked-for bits */
468 * If there are no status bits set, then this interrupt was not
469 * for me (should have been caught above).
474 /* Cache the status */
475 sc->intrstatus = status;
477 if (status & SCHED_INTR)
481 * If a FATAL or RXORN interrupt is received, we have to reset the
484 if ((status & ATH9K_INT_FATAL) || ((status & ATH9K_INT_RXORN) &&
485 !(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)))
488 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
489 (status & ATH9K_INT_BB_WATCHDOG)) {
491 spin_lock(&common->cc_lock);
492 ath_hw_cycle_counters_update(common);
493 ar9003_hw_bb_watchdog_dbg_info(ah);
494 spin_unlock(&common->cc_lock);
498 #ifdef CONFIG_PM_SLEEP
499 if (status & ATH9K_INT_BMISS) {
500 if (atomic_read(&sc->wow_sleep_proc_intr) == 0) {
501 ath_dbg(common, ANY, "during WoW we got a BMISS\n");
502 atomic_inc(&sc->wow_got_bmiss_intr);
503 atomic_dec(&sc->wow_sleep_proc_intr);
507 if (status & ATH9K_INT_SWBA)
508 tasklet_schedule(&sc->bcon_tasklet);
510 if (status & ATH9K_INT_TXURN)
511 ath9k_hw_updatetxtriglevel(ah, true);
513 if (status & ATH9K_INT_RXEOL) {
514 ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
515 ath9k_hw_set_interrupts(ah);
518 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
519 if (status & ATH9K_INT_TIM_TIMER) {
520 if (ATH_DBG_WARN_ON_ONCE(sc->ps_idle))
522 /* Clear RxAbort bit so that we can
524 ath9k_setpower(sc, ATH9K_PM_AWAKE);
525 spin_lock(&sc->sc_pm_lock);
526 ath9k_hw_setrxabort(sc->sc_ah, 0);
527 sc->ps_flags |= PS_WAIT_FOR_BEACON;
528 spin_unlock(&sc->sc_pm_lock);
533 ath_debug_stat_interrupt(sc, status);
536 /* turn off every interrupt */
537 ath9k_hw_disable_interrupts(ah);
538 tasklet_schedule(&sc->intr_tq);
546 static int ath_reset(struct ath_softc *sc)
552 r = ath_reset_internal(sc, NULL);
554 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
555 if (!ATH_TXQ_SETUP(sc, i))
558 spin_lock_bh(&sc->tx.txq[i].axq_lock);
559 ath_txq_schedule(sc, &sc->tx.txq[i]);
560 spin_unlock_bh(&sc->tx.txq[i].axq_lock);
563 ath9k_ps_restore(sc);
568 void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type)
570 #ifdef CONFIG_ATH9K_DEBUGFS
571 RESET_STAT_INC(sc, type);
573 set_bit(SC_OP_HW_RESET, &sc->sc_flags);
574 ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
577 void ath_reset_work(struct work_struct *work)
579 struct ath_softc *sc = container_of(work, struct ath_softc, hw_reset_work);
584 /**********************/
585 /* mac80211 callbacks */
586 /**********************/
588 static int ath9k_start(struct ieee80211_hw *hw)
590 struct ath_softc *sc = hw->priv;
591 struct ath_hw *ah = sc->sc_ah;
592 struct ath_common *common = ath9k_hw_common(ah);
593 struct ieee80211_channel *curchan = hw->conf.chandef.chan;
594 struct ath9k_channel *init_channel;
597 ath_dbg(common, CONFIG,
598 "Starting driver with initial channel: %d MHz\n",
599 curchan->center_freq);
602 mutex_lock(&sc->mutex);
604 init_channel = ath9k_cmn_get_channel(hw, ah, &hw->conf.chandef);
606 /* Reset SERDES registers */
607 ath9k_hw_configpcipowersave(ah, false);
610 * The basic interface to setting the hardware in a good
611 * state is ``reset''. On return the hardware is known to
612 * be powered up and with interrupts disabled. This must
613 * be followed by initialization of the appropriate bits
614 * and then setup of the interrupt mask.
616 spin_lock_bh(&sc->sc_pcu_lock);
618 atomic_set(&ah->intr_ref_cnt, -1);
620 r = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
623 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
624 r, curchan->center_freq);
625 ah->reset_power_on = false;
628 /* Setup our intr mask. */
629 ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL |
630 ATH9K_INT_RXORN | ATH9K_INT_FATAL |
633 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
634 ah->imask |= ATH9K_INT_RXHP |
636 ATH9K_INT_BB_WATCHDOG;
638 ah->imask |= ATH9K_INT_RX;
640 ah->imask |= ATH9K_INT_GTT;
642 if (ah->caps.hw_caps & ATH9K_HW_CAP_HT)
643 ah->imask |= ATH9K_INT_CST;
647 clear_bit(SC_OP_INVALID, &sc->sc_flags);
648 sc->sc_ah->is_monitoring = false;
650 if (!ath_complete_reset(sc, false))
651 ah->reset_power_on = false;
653 if (ah->led_pin >= 0) {
654 ath9k_hw_cfg_output(ah, ah->led_pin,
655 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
656 ath9k_hw_set_gpio(ah, ah->led_pin, 0);
660 * Reset key cache to sane defaults (all entries cleared) instead of
661 * semi-random values after suspend/resume.
663 ath9k_cmn_init_crypto(sc->sc_ah);
665 spin_unlock_bh(&sc->sc_pcu_lock);
667 mutex_unlock(&sc->mutex);
669 ath9k_ps_restore(sc);
674 static void ath9k_tx(struct ieee80211_hw *hw,
675 struct ieee80211_tx_control *control,
678 struct ath_softc *sc = hw->priv;
679 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
680 struct ath_tx_control txctl;
681 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
684 if (sc->ps_enabled) {
686 * mac80211 does not set PM field for normal data frames, so we
687 * need to update that based on the current PS mode.
689 if (ieee80211_is_data(hdr->frame_control) &&
690 !ieee80211_is_nullfunc(hdr->frame_control) &&
691 !ieee80211_has_pm(hdr->frame_control)) {
693 "Add PM=1 for a TX frame while in PS mode\n");
694 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
698 if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP)) {
700 * We are using PS-Poll and mac80211 can request TX while in
701 * power save mode. Need to wake up hardware for the TX to be
702 * completed and if needed, also for RX of buffered frames.
705 spin_lock_irqsave(&sc->sc_pm_lock, flags);
706 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
707 ath9k_hw_setrxabort(sc->sc_ah, 0);
708 if (ieee80211_is_pspoll(hdr->frame_control)) {
710 "Sending PS-Poll to pick a buffered frame\n");
711 sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA;
713 ath_dbg(common, PS, "Wake up to complete TX\n");
714 sc->ps_flags |= PS_WAIT_FOR_TX_ACK;
717 * The actual restore operation will happen only after
718 * the ps_flags bit is cleared. We are just dropping
719 * the ps_usecount here.
721 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
722 ath9k_ps_restore(sc);
726 * Cannot tx while the hardware is in full sleep, it first needs a full
727 * chip reset to recover from that
729 if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_FULL_SLEEP)) {
730 ath_err(common, "TX while HW is in FULL_SLEEP mode\n");
734 memset(&txctl, 0, sizeof(struct ath_tx_control));
735 txctl.txq = sc->tx.txq_map[skb_get_queue_mapping(skb)];
736 txctl.sta = control->sta;
738 ath_dbg(common, XMIT, "transmitting packet, skb: %p\n", skb);
740 if (ath_tx_start(hw, skb, &txctl) != 0) {
741 ath_dbg(common, XMIT, "TX failed\n");
742 TX_STAT_INC(txctl.txq->axq_qnum, txfailed);
748 ieee80211_free_txskb(hw, skb);
751 static void ath9k_stop(struct ieee80211_hw *hw)
753 struct ath_softc *sc = hw->priv;
754 struct ath_hw *ah = sc->sc_ah;
755 struct ath_common *common = ath9k_hw_common(ah);
758 mutex_lock(&sc->mutex);
761 del_timer_sync(&sc->rx_poll_timer);
763 if (test_bit(SC_OP_INVALID, &sc->sc_flags)) {
764 ath_dbg(common, ANY, "Device not present\n");
765 mutex_unlock(&sc->mutex);
769 /* Ensure HW is awake when we try to shut it down. */
772 spin_lock_bh(&sc->sc_pcu_lock);
774 /* prevent tasklets to enable interrupts once we disable them */
775 ah->imask &= ~ATH9K_INT_GLOBAL;
777 /* make sure h/w will not generate any interrupt
778 * before setting the invalid flag. */
779 ath9k_hw_disable_interrupts(ah);
781 spin_unlock_bh(&sc->sc_pcu_lock);
783 /* we can now sync irq and kill any running tasklets, since we already
784 * disabled interrupts and not holding a spin lock */
785 synchronize_irq(sc->irq);
786 tasklet_kill(&sc->intr_tq);
787 tasklet_kill(&sc->bcon_tasklet);
789 prev_idle = sc->ps_idle;
792 spin_lock_bh(&sc->sc_pcu_lock);
794 if (ah->led_pin >= 0) {
795 ath9k_hw_set_gpio(ah, ah->led_pin, 1);
796 ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
799 ath_prepare_reset(sc);
802 dev_kfree_skb_any(sc->rx.frag);
807 ah->curchan = ath9k_cmn_get_channel(hw, ah, &hw->conf.chandef);
809 ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
810 ath9k_hw_phy_disable(ah);
812 ath9k_hw_configpcipowersave(ah, true);
814 spin_unlock_bh(&sc->sc_pcu_lock);
816 ath9k_ps_restore(sc);
818 set_bit(SC_OP_INVALID, &sc->sc_flags);
819 sc->ps_idle = prev_idle;
821 mutex_unlock(&sc->mutex);
823 ath_dbg(common, CONFIG, "Driver halt\n");
826 bool ath9k_uses_beacons(int type)
829 case NL80211_IFTYPE_AP:
830 case NL80211_IFTYPE_ADHOC:
831 case NL80211_IFTYPE_MESH_POINT:
838 static void ath9k_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
840 struct ath9k_vif_iter_data *iter_data = data;
843 if (iter_data->has_hw_macaddr) {
844 for (i = 0; i < ETH_ALEN; i++)
845 iter_data->mask[i] &=
846 ~(iter_data->hw_macaddr[i] ^ mac[i]);
848 memcpy(iter_data->hw_macaddr, mac, ETH_ALEN);
849 iter_data->has_hw_macaddr = true;
853 case NL80211_IFTYPE_AP:
856 case NL80211_IFTYPE_STATION:
857 iter_data->nstations++;
859 case NL80211_IFTYPE_ADHOC:
860 iter_data->nadhocs++;
862 case NL80211_IFTYPE_MESH_POINT:
863 iter_data->nmeshes++;
865 case NL80211_IFTYPE_WDS:
873 static void ath9k_sta_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
875 struct ath_softc *sc = data;
876 struct ath_vif *avp = (void *)vif->drv_priv;
878 if (vif->type != NL80211_IFTYPE_STATION)
881 if (avp->primary_sta_vif)
882 ath9k_set_assoc_state(sc, vif);
885 /* Called with sc->mutex held. */
886 void ath9k_calculate_iter_data(struct ieee80211_hw *hw,
887 struct ieee80211_vif *vif,
888 struct ath9k_vif_iter_data *iter_data)
890 struct ath_softc *sc = hw->priv;
891 struct ath_hw *ah = sc->sc_ah;
892 struct ath_common *common = ath9k_hw_common(ah);
895 * Use the hardware MAC address as reference, the hardware uses it
896 * together with the BSSID mask when matching addresses.
898 memset(iter_data, 0, sizeof(*iter_data));
899 memset(&iter_data->mask, 0xff, ETH_ALEN);
902 ath9k_vif_iter(iter_data, vif->addr, vif);
904 /* Get list of all active MAC addresses */
905 ieee80211_iterate_active_interfaces_atomic(
906 sc->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
907 ath9k_vif_iter, iter_data);
909 memcpy(common->macaddr, iter_data->hw_macaddr, ETH_ALEN);
912 /* Called with sc->mutex held. */
913 static void ath9k_calculate_summary_state(struct ieee80211_hw *hw,
914 struct ieee80211_vif *vif)
916 struct ath_softc *sc = hw->priv;
917 struct ath_hw *ah = sc->sc_ah;
918 struct ath_common *common = ath9k_hw_common(ah);
919 struct ath9k_vif_iter_data iter_data;
920 enum nl80211_iftype old_opmode = ah->opmode;
922 ath9k_calculate_iter_data(hw, vif, &iter_data);
924 memcpy(common->bssidmask, iter_data.mask, ETH_ALEN);
925 ath_hw_setbssidmask(common);
927 if (iter_data.naps > 0) {
928 ath9k_hw_set_tsfadjust(ah, true);
929 ah->opmode = NL80211_IFTYPE_AP;
931 ath9k_hw_set_tsfadjust(ah, false);
933 if (iter_data.nmeshes)
934 ah->opmode = NL80211_IFTYPE_MESH_POINT;
935 else if (iter_data.nwds)
936 ah->opmode = NL80211_IFTYPE_AP;
937 else if (iter_data.nadhocs)
938 ah->opmode = NL80211_IFTYPE_ADHOC;
940 ah->opmode = NL80211_IFTYPE_STATION;
943 ath9k_hw_setopmode(ah);
945 if ((iter_data.nstations + iter_data.nadhocs + iter_data.nmeshes) > 0)
946 ah->imask |= ATH9K_INT_TSFOOR;
948 ah->imask &= ~ATH9K_INT_TSFOOR;
950 ath9k_hw_set_interrupts(ah);
953 * If we are changing the opmode to STATION,
954 * a beacon sync needs to be done.
956 if (ah->opmode == NL80211_IFTYPE_STATION &&
957 old_opmode == NL80211_IFTYPE_AP &&
958 test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags)) {
959 ieee80211_iterate_active_interfaces_atomic(
960 sc->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
961 ath9k_sta_vif_iter, sc);
965 static int ath9k_add_interface(struct ieee80211_hw *hw,
966 struct ieee80211_vif *vif)
968 struct ath_softc *sc = hw->priv;
969 struct ath_hw *ah = sc->sc_ah;
970 struct ath_common *common = ath9k_hw_common(ah);
971 struct ath_vif *avp = (void *)vif->drv_priv;
972 struct ath_node *an = &avp->mcast_node;
974 mutex_lock(&sc->mutex);
976 ath_dbg(common, CONFIG, "Attach a VIF of type: %d\n", vif->type);
980 ath9k_calculate_summary_state(hw, vif);
981 ath9k_ps_restore(sc);
983 if (ath9k_uses_beacons(vif->type))
984 ath9k_beacon_assign_slot(sc, vif);
989 an->no_ps_filter = true;
990 ath_tx_node_init(sc, an);
992 mutex_unlock(&sc->mutex);
996 static int ath9k_change_interface(struct ieee80211_hw *hw,
997 struct ieee80211_vif *vif,
998 enum nl80211_iftype new_type,
1001 struct ath_softc *sc = hw->priv;
1002 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1004 ath_dbg(common, CONFIG, "Change Interface\n");
1005 mutex_lock(&sc->mutex);
1007 if (ath9k_uses_beacons(vif->type))
1008 ath9k_beacon_remove_slot(sc, vif);
1010 vif->type = new_type;
1013 ath9k_ps_wakeup(sc);
1014 ath9k_calculate_summary_state(hw, vif);
1015 ath9k_ps_restore(sc);
1017 if (ath9k_uses_beacons(vif->type))
1018 ath9k_beacon_assign_slot(sc, vif);
1020 mutex_unlock(&sc->mutex);
1024 static void ath9k_remove_interface(struct ieee80211_hw *hw,
1025 struct ieee80211_vif *vif)
1027 struct ath_softc *sc = hw->priv;
1028 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1029 struct ath_vif *avp = (void *)vif->drv_priv;
1031 ath_dbg(common, CONFIG, "Detach Interface\n");
1033 mutex_lock(&sc->mutex);
1037 if (ath9k_uses_beacons(vif->type))
1038 ath9k_beacon_remove_slot(sc, vif);
1040 if (sc->csa_vif == vif)
1043 ath9k_ps_wakeup(sc);
1044 ath9k_calculate_summary_state(hw, NULL);
1045 ath9k_ps_restore(sc);
1047 ath_tx_node_cleanup(sc, &avp->mcast_node);
1049 mutex_unlock(&sc->mutex);
1052 static void ath9k_enable_ps(struct ath_softc *sc)
1054 struct ath_hw *ah = sc->sc_ah;
1055 struct ath_common *common = ath9k_hw_common(ah);
1057 sc->ps_enabled = true;
1058 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1059 if ((ah->imask & ATH9K_INT_TIM_TIMER) == 0) {
1060 ah->imask |= ATH9K_INT_TIM_TIMER;
1061 ath9k_hw_set_interrupts(ah);
1063 ath9k_hw_setrxabort(ah, 1);
1065 ath_dbg(common, PS, "PowerSave enabled\n");
1068 static void ath9k_disable_ps(struct ath_softc *sc)
1070 struct ath_hw *ah = sc->sc_ah;
1071 struct ath_common *common = ath9k_hw_common(ah);
1073 sc->ps_enabled = false;
1074 ath9k_hw_setpower(ah, ATH9K_PM_AWAKE);
1075 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1076 ath9k_hw_setrxabort(ah, 0);
1077 sc->ps_flags &= ~(PS_WAIT_FOR_BEACON |
1079 PS_WAIT_FOR_PSPOLL_DATA |
1080 PS_WAIT_FOR_TX_ACK);
1081 if (ah->imask & ATH9K_INT_TIM_TIMER) {
1082 ah->imask &= ~ATH9K_INT_TIM_TIMER;
1083 ath9k_hw_set_interrupts(ah);
1086 ath_dbg(common, PS, "PowerSave disabled\n");
1089 void ath9k_spectral_scan_trigger(struct ieee80211_hw *hw)
1091 struct ath_softc *sc = hw->priv;
1092 struct ath_hw *ah = sc->sc_ah;
1093 struct ath_common *common = ath9k_hw_common(ah);
1096 if (!ath9k_hw_ops(ah)->spectral_scan_trigger) {
1097 ath_err(common, "spectrum analyzer not implemented on this hardware\n");
1101 ath9k_ps_wakeup(sc);
1102 rxfilter = ath9k_hw_getrxfilter(ah);
1103 ath9k_hw_setrxfilter(ah, rxfilter |
1104 ATH9K_RX_FILTER_PHYRADAR |
1105 ATH9K_RX_FILTER_PHYERR);
1107 /* TODO: usually this should not be neccesary, but for some reason
1108 * (or in some mode?) the trigger must be called after the
1109 * configuration, otherwise the register will have its values reset
1110 * (on my ar9220 to value 0x01002310)
1112 ath9k_spectral_scan_config(hw, sc->spectral_mode);
1113 ath9k_hw_ops(ah)->spectral_scan_trigger(ah);
1114 ath9k_ps_restore(sc);
1117 int ath9k_spectral_scan_config(struct ieee80211_hw *hw,
1118 enum spectral_mode spectral_mode)
1120 struct ath_softc *sc = hw->priv;
1121 struct ath_hw *ah = sc->sc_ah;
1122 struct ath_common *common = ath9k_hw_common(ah);
1124 if (!ath9k_hw_ops(ah)->spectral_scan_trigger) {
1125 ath_err(common, "spectrum analyzer not implemented on this hardware\n");
1129 switch (spectral_mode) {
1130 case SPECTRAL_DISABLED:
1131 sc->spec_config.enabled = 0;
1133 case SPECTRAL_BACKGROUND:
1134 /* send endless samples.
1135 * TODO: is this really useful for "background"?
1137 sc->spec_config.endless = 1;
1138 sc->spec_config.enabled = 1;
1140 case SPECTRAL_CHANSCAN:
1141 case SPECTRAL_MANUAL:
1142 sc->spec_config.endless = 0;
1143 sc->spec_config.enabled = 1;
1149 ath9k_ps_wakeup(sc);
1150 ath9k_hw_ops(ah)->spectral_scan_config(ah, &sc->spec_config);
1151 ath9k_ps_restore(sc);
1153 sc->spectral_mode = spectral_mode;
1158 static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
1160 struct ath_softc *sc = hw->priv;
1161 struct ath_hw *ah = sc->sc_ah;
1162 struct ath_common *common = ath9k_hw_common(ah);
1163 struct ieee80211_conf *conf = &hw->conf;
1164 bool reset_channel = false;
1166 ath9k_ps_wakeup(sc);
1167 mutex_lock(&sc->mutex);
1169 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1170 sc->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1172 ath_cancel_work(sc);
1173 ath9k_stop_btcoex(sc);
1175 ath9k_start_btcoex(sc);
1177 * The chip needs a reset to properly wake up from
1180 reset_channel = ah->chip_fullsleep;
1185 * We just prepare to enable PS. We have to wait until our AP has
1186 * ACK'd our null data frame to disable RX otherwise we'll ignore
1187 * those ACKs and end up retransmitting the same null data frames.
1188 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1190 if (changed & IEEE80211_CONF_CHANGE_PS) {
1191 unsigned long flags;
1192 spin_lock_irqsave(&sc->sc_pm_lock, flags);
1193 if (conf->flags & IEEE80211_CONF_PS)
1194 ath9k_enable_ps(sc);
1196 ath9k_disable_ps(sc);
1197 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
1200 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
1201 if (conf->flags & IEEE80211_CONF_MONITOR) {
1202 ath_dbg(common, CONFIG, "Monitor mode is enabled\n");
1203 sc->sc_ah->is_monitoring = true;
1205 ath_dbg(common, CONFIG, "Monitor mode is disabled\n");
1206 sc->sc_ah->is_monitoring = false;
1210 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || reset_channel) {
1211 struct ieee80211_channel *curchan = hw->conf.chandef.chan;
1212 int pos = curchan->hw_value;
1214 unsigned long flags;
1217 old_pos = ah->curchan - &ah->channels[0];
1219 ath_dbg(common, CONFIG, "Set channel: %d MHz width: %d\n",
1220 curchan->center_freq, hw->conf.chandef.width);
1222 /* update survey stats for the old channel before switching */
1223 spin_lock_irqsave(&common->cc_lock, flags);
1224 ath_update_survey_stats(sc);
1225 spin_unlock_irqrestore(&common->cc_lock, flags);
1227 ath9k_cmn_get_channel(hw, ah, &conf->chandef);
1230 * If the operating channel changes, change the survey in-use flags
1232 * Reset the survey data for the new channel, unless we're switching
1233 * back to the operating channel from an off-channel operation.
1235 if (!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) &&
1236 sc->cur_survey != &sc->survey[pos]) {
1239 sc->cur_survey->filled &= ~SURVEY_INFO_IN_USE;
1241 sc->cur_survey = &sc->survey[pos];
1243 memset(sc->cur_survey, 0, sizeof(struct survey_info));
1244 sc->cur_survey->filled |= SURVEY_INFO_IN_USE;
1245 } else if (!(sc->survey[pos].filled & SURVEY_INFO_IN_USE)) {
1246 memset(&sc->survey[pos], 0, sizeof(struct survey_info));
1249 if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
1250 ath_err(common, "Unable to set channel\n");
1251 mutex_unlock(&sc->mutex);
1252 ath9k_ps_restore(sc);
1257 * The most recent snapshot of channel->noisefloor for the old
1258 * channel is only available after the hardware reset. Copy it to
1259 * the survey stats now.
1262 ath_update_survey_nf(sc, old_pos);
1265 * Enable radar pulse detection if on a DFS channel. Spectral
1266 * scanning and radar detection can not be used concurrently.
1268 if (hw->conf.radar_enabled) {
1271 /* set HW specific DFS configuration */
1272 ath9k_hw_set_radar_params(ah);
1273 rxfilter = ath9k_hw_getrxfilter(ah);
1274 rxfilter |= ATH9K_RX_FILTER_PHYRADAR |
1275 ATH9K_RX_FILTER_PHYERR;
1276 ath9k_hw_setrxfilter(ah, rxfilter);
1277 ath_dbg(common, DFS, "DFS enabled at freq %d\n",
1278 curchan->center_freq);
1280 /* perform spectral scan if requested. */
1281 if (test_bit(SC_OP_SCANNING, &sc->sc_flags) &&
1282 sc->spectral_mode == SPECTRAL_CHANSCAN)
1283 ath9k_spectral_scan_trigger(hw);
1287 if (changed & IEEE80211_CONF_CHANGE_POWER) {
1288 ath_dbg(common, CONFIG, "Set power: %d\n", conf->power_level);
1289 sc->config.txpowlimit = 2 * conf->power_level;
1290 ath9k_cmn_update_txpow(ah, sc->curtxpow,
1291 sc->config.txpowlimit, &sc->curtxpow);
1294 mutex_unlock(&sc->mutex);
1295 ath9k_ps_restore(sc);
1300 #define SUPPORTED_FILTERS \
1301 (FIF_PROMISC_IN_BSS | \
1306 FIF_BCN_PRBRESP_PROMISC | \
1310 /* FIXME: sc->sc_full_reset ? */
1311 static void ath9k_configure_filter(struct ieee80211_hw *hw,
1312 unsigned int changed_flags,
1313 unsigned int *total_flags,
1316 struct ath_softc *sc = hw->priv;
1319 changed_flags &= SUPPORTED_FILTERS;
1320 *total_flags &= SUPPORTED_FILTERS;
1322 sc->rx.rxfilter = *total_flags;
1323 ath9k_ps_wakeup(sc);
1324 rfilt = ath_calcrxfilter(sc);
1325 ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
1326 ath9k_ps_restore(sc);
1328 ath_dbg(ath9k_hw_common(sc->sc_ah), CONFIG, "Set HW RX filter: 0x%x\n",
1332 static int ath9k_sta_add(struct ieee80211_hw *hw,
1333 struct ieee80211_vif *vif,
1334 struct ieee80211_sta *sta)
1336 struct ath_softc *sc = hw->priv;
1337 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1338 struct ath_node *an = (struct ath_node *) sta->drv_priv;
1339 struct ieee80211_key_conf ps_key = { };
1342 ath_node_attach(sc, sta, vif);
1344 if (vif->type != NL80211_IFTYPE_AP &&
1345 vif->type != NL80211_IFTYPE_AP_VLAN)
1348 key = ath_key_config(common, vif, sta, &ps_key);
1355 static void ath9k_del_ps_key(struct ath_softc *sc,
1356 struct ieee80211_vif *vif,
1357 struct ieee80211_sta *sta)
1359 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1360 struct ath_node *an = (struct ath_node *) sta->drv_priv;
1361 struct ieee80211_key_conf ps_key = { .hw_key_idx = an->ps_key };
1366 ath_key_delete(common, &ps_key);
1370 static int ath9k_sta_remove(struct ieee80211_hw *hw,
1371 struct ieee80211_vif *vif,
1372 struct ieee80211_sta *sta)
1374 struct ath_softc *sc = hw->priv;
1376 ath9k_del_ps_key(sc, vif, sta);
1377 ath_node_detach(sc, sta);
1382 static void ath9k_sta_notify(struct ieee80211_hw *hw,
1383 struct ieee80211_vif *vif,
1384 enum sta_notify_cmd cmd,
1385 struct ieee80211_sta *sta)
1387 struct ath_softc *sc = hw->priv;
1388 struct ath_node *an = (struct ath_node *) sta->drv_priv;
1391 case STA_NOTIFY_SLEEP:
1392 an->sleeping = true;
1393 ath_tx_aggr_sleep(sta, sc, an);
1395 case STA_NOTIFY_AWAKE:
1396 an->sleeping = false;
1397 ath_tx_aggr_wakeup(sc, an);
1402 static int ath9k_conf_tx(struct ieee80211_hw *hw,
1403 struct ieee80211_vif *vif, u16 queue,
1404 const struct ieee80211_tx_queue_params *params)
1406 struct ath_softc *sc = hw->priv;
1407 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1408 struct ath_txq *txq;
1409 struct ath9k_tx_queue_info qi;
1412 if (queue >= IEEE80211_NUM_ACS)
1415 txq = sc->tx.txq_map[queue];
1417 ath9k_ps_wakeup(sc);
1418 mutex_lock(&sc->mutex);
1420 memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
1422 qi.tqi_aifs = params->aifs;
1423 qi.tqi_cwmin = params->cw_min;
1424 qi.tqi_cwmax = params->cw_max;
1425 qi.tqi_burstTime = params->txop * 32;
1427 ath_dbg(common, CONFIG,
1428 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1429 queue, txq->axq_qnum, params->aifs, params->cw_min,
1430 params->cw_max, params->txop);
1432 ath_update_max_aggr_framelen(sc, queue, qi.tqi_burstTime);
1433 ret = ath_txq_update(sc, txq->axq_qnum, &qi);
1435 ath_err(common, "TXQ Update failed\n");
1437 mutex_unlock(&sc->mutex);
1438 ath9k_ps_restore(sc);
1443 static int ath9k_set_key(struct ieee80211_hw *hw,
1444 enum set_key_cmd cmd,
1445 struct ieee80211_vif *vif,
1446 struct ieee80211_sta *sta,
1447 struct ieee80211_key_conf *key)
1449 struct ath_softc *sc = hw->priv;
1450 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1453 if (ath9k_modparam_nohwcrypt)
1456 if ((vif->type == NL80211_IFTYPE_ADHOC ||
1457 vif->type == NL80211_IFTYPE_MESH_POINT) &&
1458 (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
1459 key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
1460 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
1462 * For now, disable hw crypto for the RSN IBSS group keys. This
1463 * could be optimized in the future to use a modified key cache
1464 * design to support per-STA RX GTK, but until that gets
1465 * implemented, use of software crypto for group addressed
1466 * frames is a acceptable to allow RSN IBSS to be used.
1471 mutex_lock(&sc->mutex);
1472 ath9k_ps_wakeup(sc);
1473 ath_dbg(common, CONFIG, "Set HW Key\n");
1478 ath9k_del_ps_key(sc, vif, sta);
1480 ret = ath_key_config(common, vif, sta, key);
1482 key->hw_key_idx = ret;
1483 /* push IV and Michael MIC generation to stack */
1484 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1485 if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
1486 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1487 if (sc->sc_ah->sw_mgmt_crypto &&
1488 key->cipher == WLAN_CIPHER_SUITE_CCMP)
1489 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
1494 ath_key_delete(common, key);
1500 ath9k_ps_restore(sc);
1501 mutex_unlock(&sc->mutex);
1506 static void ath9k_set_assoc_state(struct ath_softc *sc,
1507 struct ieee80211_vif *vif)
1509 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1510 struct ath_vif *avp = (void *)vif->drv_priv;
1511 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1512 unsigned long flags;
1514 set_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags);
1515 avp->primary_sta_vif = true;
1518 * Set the AID, BSSID and do beacon-sync only when
1519 * the HW opmode is STATION.
1521 * But the primary bit is set above in any case.
1523 if (sc->sc_ah->opmode != NL80211_IFTYPE_STATION)
1526 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1527 common->curaid = bss_conf->aid;
1528 ath9k_hw_write_associd(sc->sc_ah);
1530 sc->last_rssi = ATH_RSSI_DUMMY_MARKER;
1531 sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
1533 spin_lock_irqsave(&sc->sc_pm_lock, flags);
1534 sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON;
1535 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
1537 if (ath9k_hw_mci_is_enabled(sc->sc_ah))
1538 ath9k_mci_update_wlan_channels(sc, false);
1540 ath_dbg(common, CONFIG,
1541 "Primary Station interface: %pM, BSSID: %pM\n",
1542 vif->addr, common->curbssid);
1545 static void ath9k_bss_assoc_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
1547 struct ath_softc *sc = data;
1548 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1550 if (test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags))
1553 if (bss_conf->assoc)
1554 ath9k_set_assoc_state(sc, vif);
1557 static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
1558 struct ieee80211_vif *vif,
1559 struct ieee80211_bss_conf *bss_conf,
1563 (BSS_CHANGED_ASSOC | \
1564 BSS_CHANGED_IBSS | \
1565 BSS_CHANGED_BEACON_ENABLED)
1567 struct ath_softc *sc = hw->priv;
1568 struct ath_hw *ah = sc->sc_ah;
1569 struct ath_common *common = ath9k_hw_common(ah);
1570 struct ath_vif *avp = (void *)vif->drv_priv;
1573 ath9k_ps_wakeup(sc);
1574 mutex_lock(&sc->mutex);
1576 if (changed & BSS_CHANGED_ASSOC) {
1577 ath_dbg(common, CONFIG, "BSSID %pM Changed ASSOC %d\n",
1578 bss_conf->bssid, bss_conf->assoc);
1580 if (avp->primary_sta_vif && !bss_conf->assoc) {
1581 clear_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags);
1582 avp->primary_sta_vif = false;
1584 if (ah->opmode == NL80211_IFTYPE_STATION)
1585 clear_bit(SC_OP_BEACONS, &sc->sc_flags);
1588 ieee80211_iterate_active_interfaces_atomic(
1589 sc->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1590 ath9k_bss_assoc_iter, sc);
1592 if (!test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags) &&
1593 ah->opmode == NL80211_IFTYPE_STATION) {
1594 memset(common->curbssid, 0, ETH_ALEN);
1596 ath9k_hw_write_associd(sc->sc_ah);
1597 if (ath9k_hw_mci_is_enabled(sc->sc_ah))
1598 ath9k_mci_update_wlan_channels(sc, true);
1602 if (changed & BSS_CHANGED_IBSS) {
1603 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1604 common->curaid = bss_conf->aid;
1605 ath9k_hw_write_associd(sc->sc_ah);
1608 if ((changed & BSS_CHANGED_BEACON_ENABLED) ||
1609 (changed & BSS_CHANGED_BEACON_INT)) {
1610 if (ah->opmode == NL80211_IFTYPE_AP &&
1611 bss_conf->enable_beacon)
1612 ath9k_set_tsfadjust(sc, vif);
1613 if (ath9k_allow_beacon_config(sc, vif))
1614 ath9k_beacon_config(sc, vif, changed);
1617 if (changed & BSS_CHANGED_ERP_SLOT) {
1618 if (bss_conf->use_short_slot)
1622 if (vif->type == NL80211_IFTYPE_AP) {
1624 * Defer update, so that connected stations can adjust
1625 * their settings at the same time.
1626 * See beacon.c for more details
1628 sc->beacon.slottime = slottime;
1629 sc->beacon.updateslot = UPDATE;
1631 ah->slottime = slottime;
1632 ath9k_hw_init_global_settings(ah);
1636 if (changed & CHECK_ANI)
1639 mutex_unlock(&sc->mutex);
1640 ath9k_ps_restore(sc);
1645 static u64 ath9k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1647 struct ath_softc *sc = hw->priv;
1650 mutex_lock(&sc->mutex);
1651 ath9k_ps_wakeup(sc);
1652 tsf = ath9k_hw_gettsf64(sc->sc_ah);
1653 ath9k_ps_restore(sc);
1654 mutex_unlock(&sc->mutex);
1659 static void ath9k_set_tsf(struct ieee80211_hw *hw,
1660 struct ieee80211_vif *vif,
1663 struct ath_softc *sc = hw->priv;
1665 mutex_lock(&sc->mutex);
1666 ath9k_ps_wakeup(sc);
1667 ath9k_hw_settsf64(sc->sc_ah, tsf);
1668 ath9k_ps_restore(sc);
1669 mutex_unlock(&sc->mutex);
1672 static void ath9k_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1674 struct ath_softc *sc = hw->priv;
1676 mutex_lock(&sc->mutex);
1678 ath9k_ps_wakeup(sc);
1679 ath9k_hw_reset_tsf(sc->sc_ah);
1680 ath9k_ps_restore(sc);
1682 mutex_unlock(&sc->mutex);
1685 static int ath9k_ampdu_action(struct ieee80211_hw *hw,
1686 struct ieee80211_vif *vif,
1687 enum ieee80211_ampdu_mlme_action action,
1688 struct ieee80211_sta *sta,
1689 u16 tid, u16 *ssn, u8 buf_size)
1691 struct ath_softc *sc = hw->priv;
1695 mutex_lock(&sc->mutex);
1698 case IEEE80211_AMPDU_RX_START:
1700 case IEEE80211_AMPDU_RX_STOP:
1702 case IEEE80211_AMPDU_TX_START:
1703 ath9k_ps_wakeup(sc);
1704 ret = ath_tx_aggr_start(sc, sta, tid, ssn);
1706 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1707 ath9k_ps_restore(sc);
1709 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1710 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1712 case IEEE80211_AMPDU_TX_STOP_CONT:
1713 ath9k_ps_wakeup(sc);
1714 ath_tx_aggr_stop(sc, sta, tid);
1716 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1717 ath9k_ps_restore(sc);
1719 case IEEE80211_AMPDU_TX_OPERATIONAL:
1720 ath9k_ps_wakeup(sc);
1721 ath_tx_aggr_resume(sc, sta, tid);
1722 ath9k_ps_restore(sc);
1725 ath_err(ath9k_hw_common(sc->sc_ah), "Unknown AMPDU action\n");
1728 mutex_unlock(&sc->mutex);
1733 static int ath9k_get_survey(struct ieee80211_hw *hw, int idx,
1734 struct survey_info *survey)
1736 struct ath_softc *sc = hw->priv;
1737 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1738 struct ieee80211_supported_band *sband;
1739 struct ieee80211_channel *chan;
1740 unsigned long flags;
1743 spin_lock_irqsave(&common->cc_lock, flags);
1745 ath_update_survey_stats(sc);
1747 sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
1748 if (sband && idx >= sband->n_channels) {
1749 idx -= sband->n_channels;
1754 sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];
1756 if (!sband || idx >= sband->n_channels) {
1757 spin_unlock_irqrestore(&common->cc_lock, flags);
1761 chan = &sband->channels[idx];
1762 pos = chan->hw_value;
1763 memcpy(survey, &sc->survey[pos], sizeof(*survey));
1764 survey->channel = chan;
1765 spin_unlock_irqrestore(&common->cc_lock, flags);
1770 static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
1772 struct ath_softc *sc = hw->priv;
1773 struct ath_hw *ah = sc->sc_ah;
1775 mutex_lock(&sc->mutex);
1776 ah->coverage_class = coverage_class;
1778 ath9k_ps_wakeup(sc);
1779 ath9k_hw_init_global_settings(ah);
1780 ath9k_ps_restore(sc);
1782 mutex_unlock(&sc->mutex);
1785 static void ath9k_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
1787 struct ath_softc *sc = hw->priv;
1788 struct ath_hw *ah = sc->sc_ah;
1789 struct ath_common *common = ath9k_hw_common(ah);
1790 int timeout = 200; /* ms */
1794 mutex_lock(&sc->mutex);
1795 cancel_delayed_work_sync(&sc->tx_complete_work);
1797 if (ah->ah_flags & AH_UNPLUGGED) {
1798 ath_dbg(common, ANY, "Device has been unplugged!\n");
1799 mutex_unlock(&sc->mutex);
1803 if (test_bit(SC_OP_INVALID, &sc->sc_flags)) {
1804 ath_dbg(common, ANY, "Device not present\n");
1805 mutex_unlock(&sc->mutex);
1809 for (j = 0; j < timeout; j++) {
1813 usleep_range(1000, 2000);
1815 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
1816 if (!ATH_TXQ_SETUP(sc, i))
1819 npend = ath9k_has_pending_frames(sc, &sc->tx.txq[i]);
1830 ath9k_ps_wakeup(sc);
1831 spin_lock_bh(&sc->sc_pcu_lock);
1832 drain_txq = ath_drain_all_txq(sc);
1833 spin_unlock_bh(&sc->sc_pcu_lock);
1838 ath9k_ps_restore(sc);
1839 ieee80211_wake_queues(hw);
1842 ieee80211_queue_delayed_work(hw, &sc->tx_complete_work, 0);
1843 mutex_unlock(&sc->mutex);
1846 static bool ath9k_tx_frames_pending(struct ieee80211_hw *hw)
1848 struct ath_softc *sc = hw->priv;
1851 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
1852 if (!ATH_TXQ_SETUP(sc, i))
1855 if (ath9k_has_pending_frames(sc, &sc->tx.txq[i]))
1861 static int ath9k_tx_last_beacon(struct ieee80211_hw *hw)
1863 struct ath_softc *sc = hw->priv;
1864 struct ath_hw *ah = sc->sc_ah;
1865 struct ieee80211_vif *vif;
1866 struct ath_vif *avp;
1868 struct ath_tx_status ts;
1869 bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
1872 vif = sc->beacon.bslot[0];
1876 if (!vif->bss_conf.enable_beacon)
1879 avp = (void *)vif->drv_priv;
1881 if (!sc->beacon.tx_processed && !edma) {
1882 tasklet_disable(&sc->bcon_tasklet);
1885 if (!bf || !bf->bf_mpdu)
1888 status = ath9k_hw_txprocdesc(ah, bf->bf_desc, &ts);
1889 if (status == -EINPROGRESS)
1892 sc->beacon.tx_processed = true;
1893 sc->beacon.tx_last = !(ts.ts_status & ATH9K_TXERR_MASK);
1896 tasklet_enable(&sc->bcon_tasklet);
1899 return sc->beacon.tx_last;
1902 static int ath9k_get_stats(struct ieee80211_hw *hw,
1903 struct ieee80211_low_level_stats *stats)
1905 struct ath_softc *sc = hw->priv;
1906 struct ath_hw *ah = sc->sc_ah;
1907 struct ath9k_mib_stats *mib_stats = &ah->ah_mibStats;
1909 stats->dot11ACKFailureCount = mib_stats->ackrcv_bad;
1910 stats->dot11RTSFailureCount = mib_stats->rts_bad;
1911 stats->dot11FCSErrorCount = mib_stats->fcs_bad;
1912 stats->dot11RTSSuccessCount = mib_stats->rts_good;
1916 static u32 fill_chainmask(u32 cap, u32 new)
1921 for (i = 0; cap && new; i++, cap >>= 1) {
1922 if (!(cap & BIT(0)))
1934 static bool validate_antenna_mask(struct ath_hw *ah, u32 val)
1936 if (AR_SREV_9300_20_OR_LATER(ah))
1939 switch (val & 0x7) {
1945 return (ah->caps.rx_chainmask == 1);
1951 static int ath9k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
1953 struct ath_softc *sc = hw->priv;
1954 struct ath_hw *ah = sc->sc_ah;
1956 if (ah->caps.rx_chainmask != 1)
1959 if (!validate_antenna_mask(ah, rx_ant) || !tx_ant)
1962 sc->ant_rx = rx_ant;
1963 sc->ant_tx = tx_ant;
1965 if (ah->caps.rx_chainmask == 1)
1968 /* AR9100 runs into calibration issues if not all rx chains are enabled */
1969 if (AR_SREV_9100(ah))
1970 ah->rxchainmask = 0x7;
1972 ah->rxchainmask = fill_chainmask(ah->caps.rx_chainmask, rx_ant);
1974 ah->txchainmask = fill_chainmask(ah->caps.tx_chainmask, tx_ant);
1975 ath9k_reload_chainmask_settings(sc);
1980 static int ath9k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
1982 struct ath_softc *sc = hw->priv;
1984 *tx_ant = sc->ant_tx;
1985 *rx_ant = sc->ant_rx;
1989 #ifdef CONFIG_PM_SLEEP
1991 static void ath9k_wow_map_triggers(struct ath_softc *sc,
1992 struct cfg80211_wowlan *wowlan,
1995 if (wowlan->disconnect)
1996 *wow_triggers |= AH_WOW_LINK_CHANGE |
1998 if (wowlan->magic_pkt)
1999 *wow_triggers |= AH_WOW_MAGIC_PATTERN_EN;
2001 if (wowlan->n_patterns)
2002 *wow_triggers |= AH_WOW_USER_PATTERN_EN;
2004 sc->wow_enabled = *wow_triggers;
2008 static void ath9k_wow_add_disassoc_deauth_pattern(struct ath_softc *sc)
2010 struct ath_hw *ah = sc->sc_ah;
2011 struct ath_common *common = ath9k_hw_common(ah);
2012 int pattern_count = 0;
2014 u8 dis_deauth_pattern[MAX_PATTERN_SIZE];
2015 u8 dis_deauth_mask[MAX_PATTERN_SIZE];
2017 memset(dis_deauth_pattern, 0, MAX_PATTERN_SIZE);
2018 memset(dis_deauth_mask, 0, MAX_PATTERN_SIZE);
2021 * Create Dissassociate / Deauthenticate packet filter
2023 * 2 bytes 2 byte 6 bytes 6 bytes 6 bytes
2024 * +--------------+----------+---------+--------+--------+----
2025 * + Frame Control+ Duration + DA + SA + BSSID +
2026 * +--------------+----------+---------+--------+--------+----
2028 * The above is the management frame format for disassociate/
2029 * deauthenticate pattern, from this we need to match the first byte
2030 * of 'Frame Control' and DA, SA, and BSSID fields
2031 * (skipping 2nd byte of FC and Duration feild.
2033 * Disassociate pattern
2034 * --------------------
2035 * Frame control = 00 00 1010
2036 * DA, SA, BSSID = x:x:x:x:x:x
2037 * Pattern will be A0000000 | x:x:x:x:x:x | x:x:x:x:x:x
2038 * | x:x:x:x:x:x -- 22 bytes
2040 * Deauthenticate pattern
2041 * ----------------------
2042 * Frame control = 00 00 1100
2043 * DA, SA, BSSID = x:x:x:x:x:x
2044 * Pattern will be C0000000 | x:x:x:x:x:x | x:x:x:x:x:x
2045 * | x:x:x:x:x:x -- 22 bytes
2048 /* Create Disassociate Pattern first */
2052 /* Fill out the mask with all FF's */
2054 for (i = 0; i < MAX_PATTERN_MASK_SIZE; i++)
2055 dis_deauth_mask[i] = 0xff;
2057 /* copy the first byte of frame control field */
2058 dis_deauth_pattern[byte_cnt] = 0xa0;
2061 /* skip 2nd byte of frame control and Duration field */
2065 * need not match the destination mac address, it can be a broadcast
2066 * mac address or an unicast to this station
2070 /* copy the source mac address */
2071 memcpy((dis_deauth_pattern + byte_cnt), common->curbssid, ETH_ALEN);
2075 /* copy the bssid, its same as the source mac address */
2077 memcpy((dis_deauth_pattern + byte_cnt), common->curbssid, ETH_ALEN);
2079 /* Create Disassociate pattern mask */
2081 dis_deauth_mask[0] = 0xfe;
2082 dis_deauth_mask[1] = 0x03;
2083 dis_deauth_mask[2] = 0xc0;
2085 ath_dbg(common, WOW, "Adding disassoc/deauth patterns for WoW\n");
2087 ath9k_hw_wow_apply_pattern(ah, dis_deauth_pattern, dis_deauth_mask,
2088 pattern_count, byte_cnt);
2092 * for de-authenticate pattern, only the first byte of the frame
2093 * control field gets changed from 0xA0 to 0xC0
2095 dis_deauth_pattern[0] = 0xC0;
2097 ath9k_hw_wow_apply_pattern(ah, dis_deauth_pattern, dis_deauth_mask,
2098 pattern_count, byte_cnt);
2102 static void ath9k_wow_add_pattern(struct ath_softc *sc,
2103 struct cfg80211_wowlan *wowlan)
2105 struct ath_hw *ah = sc->sc_ah;
2106 struct ath9k_wow_pattern *wow_pattern = NULL;
2107 struct cfg80211_pkt_pattern *patterns = wowlan->patterns;
2111 if (!wowlan->n_patterns)
2115 * Add the new user configured patterns
2117 for (i = 0; i < wowlan->n_patterns; i++) {
2119 wow_pattern = kzalloc(sizeof(*wow_pattern), GFP_KERNEL);
2125 * TODO: convert the generic user space pattern to
2126 * appropriate chip specific/802.11 pattern.
2129 mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
2130 memset(wow_pattern->pattern_bytes, 0, MAX_PATTERN_SIZE);
2131 memset(wow_pattern->mask_bytes, 0, MAX_PATTERN_SIZE);
2132 memcpy(wow_pattern->pattern_bytes, patterns[i].pattern,
2133 patterns[i].pattern_len);
2134 memcpy(wow_pattern->mask_bytes, patterns[i].mask, mask_len);
2135 wow_pattern->pattern_len = patterns[i].pattern_len;
2138 * just need to take care of deauth and disssoc pattern,
2139 * make sure we don't overwrite them.
2142 ath9k_hw_wow_apply_pattern(ah, wow_pattern->pattern_bytes,
2143 wow_pattern->mask_bytes,
2145 wow_pattern->pattern_len);
2152 static int ath9k_suspend(struct ieee80211_hw *hw,
2153 struct cfg80211_wowlan *wowlan)
2155 struct ath_softc *sc = hw->priv;
2156 struct ath_hw *ah = sc->sc_ah;
2157 struct ath_common *common = ath9k_hw_common(ah);
2158 u32 wow_triggers_enabled = 0;
2161 mutex_lock(&sc->mutex);
2163 ath_cancel_work(sc);
2165 del_timer_sync(&sc->rx_poll_timer);
2167 if (test_bit(SC_OP_INVALID, &sc->sc_flags)) {
2168 ath_dbg(common, ANY, "Device not present\n");
2173 if (WARN_ON(!wowlan)) {
2174 ath_dbg(common, WOW, "None of the WoW triggers enabled\n");
2179 if (!device_can_wakeup(sc->dev)) {
2180 ath_dbg(common, WOW, "device_can_wakeup failed, WoW is not enabled\n");
2186 * none of the sta vifs are associated
2187 * and we are not currently handling multivif
2188 * cases, for instance we have to seperately
2189 * configure 'keep alive frame' for each
2193 if (!test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags)) {
2194 ath_dbg(common, WOW, "None of the STA vifs are associated\n");
2199 if (sc->nvifs > 1) {
2200 ath_dbg(common, WOW, "WoW for multivif is not yet supported\n");
2205 ath9k_wow_map_triggers(sc, wowlan, &wow_triggers_enabled);
2207 ath_dbg(common, WOW, "WoW triggers enabled 0x%x\n",
2208 wow_triggers_enabled);
2210 ath9k_ps_wakeup(sc);
2212 ath9k_stop_btcoex(sc);
2215 * Enable wake up on recieving disassoc/deauth
2218 ath9k_wow_add_disassoc_deauth_pattern(sc);
2220 if (wow_triggers_enabled & AH_WOW_USER_PATTERN_EN)
2221 ath9k_wow_add_pattern(sc, wowlan);
2223 spin_lock_bh(&sc->sc_pcu_lock);
2225 * To avoid false wake, we enable beacon miss interrupt only
2226 * when we go to sleep. We save the current interrupt mask
2227 * so we can restore it after the system wakes up
2229 sc->wow_intr_before_sleep = ah->imask;
2230 ah->imask &= ~ATH9K_INT_GLOBAL;
2231 ath9k_hw_disable_interrupts(ah);
2232 ah->imask = ATH9K_INT_BMISS | ATH9K_INT_GLOBAL;
2233 ath9k_hw_set_interrupts(ah);
2234 ath9k_hw_enable_interrupts(ah);
2236 spin_unlock_bh(&sc->sc_pcu_lock);
2239 * we can now sync irq and kill any running tasklets, since we already
2240 * disabled interrupts and not holding a spin lock
2242 synchronize_irq(sc->irq);
2243 tasklet_kill(&sc->intr_tq);
2245 ath9k_hw_wow_enable(ah, wow_triggers_enabled);
2247 ath9k_ps_restore(sc);
2248 ath_dbg(common, ANY, "WoW enabled in ath9k\n");
2249 atomic_inc(&sc->wow_sleep_proc_intr);
2252 mutex_unlock(&sc->mutex);
2256 static int ath9k_resume(struct ieee80211_hw *hw)
2258 struct ath_softc *sc = hw->priv;
2259 struct ath_hw *ah = sc->sc_ah;
2260 struct ath_common *common = ath9k_hw_common(ah);
2263 mutex_lock(&sc->mutex);
2265 ath9k_ps_wakeup(sc);
2267 spin_lock_bh(&sc->sc_pcu_lock);
2269 ath9k_hw_disable_interrupts(ah);
2270 ah->imask = sc->wow_intr_before_sleep;
2271 ath9k_hw_set_interrupts(ah);
2272 ath9k_hw_enable_interrupts(ah);
2274 spin_unlock_bh(&sc->sc_pcu_lock);
2276 wow_status = ath9k_hw_wow_wakeup(ah);
2278 if (atomic_read(&sc->wow_got_bmiss_intr) == 0) {
2280 * some devices may not pick beacon miss
2281 * as the reason they woke up so we add
2282 * that here for that shortcoming.
2284 wow_status |= AH_WOW_BEACON_MISS;
2285 atomic_dec(&sc->wow_got_bmiss_intr);
2286 ath_dbg(common, ANY, "Beacon miss interrupt picked up during WoW sleep\n");
2289 atomic_dec(&sc->wow_sleep_proc_intr);
2292 ath_dbg(common, ANY, "Waking up due to WoW triggers %s with WoW status = %x\n",
2293 ath9k_hw_wow_event_to_string(wow_status), wow_status);
2296 ath_restart_work(sc);
2297 ath9k_start_btcoex(sc);
2299 ath9k_ps_restore(sc);
2300 mutex_unlock(&sc->mutex);
2305 static void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled)
2307 struct ath_softc *sc = hw->priv;
2309 mutex_lock(&sc->mutex);
2310 device_init_wakeup(sc->dev, 1);
2311 device_set_wakeup_enable(sc->dev, enabled);
2312 mutex_unlock(&sc->mutex);
2316 static void ath9k_sw_scan_start(struct ieee80211_hw *hw)
2318 struct ath_softc *sc = hw->priv;
2319 set_bit(SC_OP_SCANNING, &sc->sc_flags);
2322 static void ath9k_sw_scan_complete(struct ieee80211_hw *hw)
2324 struct ath_softc *sc = hw->priv;
2325 clear_bit(SC_OP_SCANNING, &sc->sc_flags);
2328 static void ath9k_channel_switch_beacon(struct ieee80211_hw *hw,
2329 struct ieee80211_vif *vif,
2330 struct cfg80211_chan_def *chandef)
2332 struct ath_softc *sc = hw->priv;
2334 /* mac80211 does not support CSA in multi-if cases (yet) */
2335 if (WARN_ON(sc->csa_vif))
2341 struct ieee80211_ops ath9k_ops = {
2343 .start = ath9k_start,
2345 .add_interface = ath9k_add_interface,
2346 .change_interface = ath9k_change_interface,
2347 .remove_interface = ath9k_remove_interface,
2348 .config = ath9k_config,
2349 .configure_filter = ath9k_configure_filter,
2350 .sta_add = ath9k_sta_add,
2351 .sta_remove = ath9k_sta_remove,
2352 .sta_notify = ath9k_sta_notify,
2353 .conf_tx = ath9k_conf_tx,
2354 .bss_info_changed = ath9k_bss_info_changed,
2355 .set_key = ath9k_set_key,
2356 .get_tsf = ath9k_get_tsf,
2357 .set_tsf = ath9k_set_tsf,
2358 .reset_tsf = ath9k_reset_tsf,
2359 .ampdu_action = ath9k_ampdu_action,
2360 .get_survey = ath9k_get_survey,
2361 .rfkill_poll = ath9k_rfkill_poll_state,
2362 .set_coverage_class = ath9k_set_coverage_class,
2363 .flush = ath9k_flush,
2364 .tx_frames_pending = ath9k_tx_frames_pending,
2365 .tx_last_beacon = ath9k_tx_last_beacon,
2366 .release_buffered_frames = ath9k_release_buffered_frames,
2367 .get_stats = ath9k_get_stats,
2368 .set_antenna = ath9k_set_antenna,
2369 .get_antenna = ath9k_get_antenna,
2371 #ifdef CONFIG_PM_SLEEP
2372 .suspend = ath9k_suspend,
2373 .resume = ath9k_resume,
2374 .set_wakeup = ath9k_set_wakeup,
2377 #ifdef CONFIG_ATH9K_DEBUGFS
2378 .get_et_sset_count = ath9k_get_et_sset_count,
2379 .get_et_stats = ath9k_get_et_stats,
2380 .get_et_strings = ath9k_get_et_strings,
2383 #if defined(CONFIG_MAC80211_DEBUGFS) && defined(CONFIG_ATH9K_DEBUGFS)
2384 .sta_add_debugfs = ath9k_sta_add_debugfs,
2386 .sw_scan_start = ath9k_sw_scan_start,
2387 .sw_scan_complete = ath9k_sw_scan_complete,
2388 .channel_switch_beacon = ath9k_channel_switch_beacon,