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 u8 parse_mpdudensity(u8 mpdudensity)
25 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
26 * 0 for no restriction
35 switch (mpdudensity) {
41 /* Our lower layer calculations limit our precision to
57 static bool ath9k_has_pending_frames(struct ath_softc *sc, struct ath_txq *txq)
61 spin_lock_bh(&txq->axq_lock);
63 if (txq->axq_depth || !list_empty(&txq->axq_acq))
65 else if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
66 pending = !list_empty(&txq->txq_fifo_pending);
68 spin_unlock_bh(&txq->axq_lock);
72 bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode)
77 spin_lock_irqsave(&sc->sc_pm_lock, flags);
78 ret = ath9k_hw_setpower(sc->sc_ah, mode);
79 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
84 void ath9k_ps_wakeup(struct ath_softc *sc)
86 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
88 enum ath9k_power_mode power_mode;
90 spin_lock_irqsave(&sc->sc_pm_lock, flags);
91 if (++sc->ps_usecount != 1)
94 power_mode = sc->sc_ah->power_mode;
95 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
98 * While the hardware is asleep, the cycle counters contain no
99 * useful data. Better clear them now so that they don't mess up
100 * survey data results.
102 if (power_mode != ATH9K_PM_AWAKE) {
103 spin_lock(&common->cc_lock);
104 ath_hw_cycle_counters_update(common);
105 memset(&common->cc_survey, 0, sizeof(common->cc_survey));
106 spin_unlock(&common->cc_lock);
110 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
113 void ath9k_ps_restore(struct ath_softc *sc)
115 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
118 spin_lock_irqsave(&sc->sc_pm_lock, flags);
119 if (--sc->ps_usecount != 0)
122 spin_lock(&common->cc_lock);
123 ath_hw_cycle_counters_update(common);
124 spin_unlock(&common->cc_lock);
127 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP);
128 else if (sc->ps_enabled &&
129 !(sc->ps_flags & (PS_WAIT_FOR_BEACON |
131 PS_WAIT_FOR_PSPOLL_DATA |
132 PS_WAIT_FOR_TX_ACK)))
133 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP);
136 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
139 static void ath_start_ani(struct ath_common *common)
141 struct ath_hw *ah = common->ah;
142 unsigned long timestamp = jiffies_to_msecs(jiffies);
143 struct ath_softc *sc = (struct ath_softc *) common->priv;
145 if (!(sc->sc_flags & SC_OP_ANI_RUN))
148 if (sc->sc_flags & SC_OP_OFFCHANNEL)
151 common->ani.longcal_timer = timestamp;
152 common->ani.shortcal_timer = timestamp;
153 common->ani.checkani_timer = timestamp;
155 mod_timer(&common->ani.timer,
157 msecs_to_jiffies((u32)ah->config.ani_poll_interval));
160 static void ath_update_survey_nf(struct ath_softc *sc, int channel)
162 struct ath_hw *ah = sc->sc_ah;
163 struct ath9k_channel *chan = &ah->channels[channel];
164 struct survey_info *survey = &sc->survey[channel];
166 if (chan->noisefloor) {
167 survey->filled |= SURVEY_INFO_NOISE_DBM;
168 survey->noise = chan->noisefloor;
173 * Updates the survey statistics and returns the busy time since last
174 * update in %, if the measurement duration was long enough for the
175 * result to be useful, -1 otherwise.
177 static int ath_update_survey_stats(struct ath_softc *sc)
179 struct ath_hw *ah = sc->sc_ah;
180 struct ath_common *common = ath9k_hw_common(ah);
181 int pos = ah->curchan - &ah->channels[0];
182 struct survey_info *survey = &sc->survey[pos];
183 struct ath_cycle_counters *cc = &common->cc_survey;
184 unsigned int div = common->clockrate * 1000;
190 if (ah->power_mode == ATH9K_PM_AWAKE)
191 ath_hw_cycle_counters_update(common);
193 if (cc->cycles > 0) {
194 survey->filled |= SURVEY_INFO_CHANNEL_TIME |
195 SURVEY_INFO_CHANNEL_TIME_BUSY |
196 SURVEY_INFO_CHANNEL_TIME_RX |
197 SURVEY_INFO_CHANNEL_TIME_TX;
198 survey->channel_time += cc->cycles / div;
199 survey->channel_time_busy += cc->rx_busy / div;
200 survey->channel_time_rx += cc->rx_frame / div;
201 survey->channel_time_tx += cc->tx_frame / div;
204 if (cc->cycles < div)
208 ret = cc->rx_busy * 100 / cc->cycles;
210 memset(cc, 0, sizeof(*cc));
212 ath_update_survey_nf(sc, pos);
218 * Set/change channels. If the channel is really being changed, it's done
219 * by reseting the chip. To accomplish this we must first cleanup any pending
220 * DMA, then restart stuff.
222 int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
223 struct ath9k_channel *hchan)
225 struct ath_hw *ah = sc->sc_ah;
226 struct ath_common *common = ath9k_hw_common(ah);
227 struct ieee80211_conf *conf = &common->hw->conf;
228 bool fastcc = true, stopped;
229 struct ieee80211_channel *channel = hw->conf.channel;
230 struct ath9k_hw_cal_data *caldata = NULL;
233 if (sc->sc_flags & SC_OP_INVALID)
236 sc->hw_busy_count = 0;
238 del_timer_sync(&common->ani.timer);
239 cancel_work_sync(&sc->paprd_work);
240 cancel_work_sync(&sc->hw_check_work);
241 cancel_delayed_work_sync(&sc->tx_complete_work);
242 cancel_delayed_work_sync(&sc->hw_pll_work);
246 spin_lock_bh(&sc->sc_pcu_lock);
249 * This is only performed if the channel settings have
252 * To switch channels clear any pending DMA operations;
253 * wait long enough for the RX fifo to drain, reset the
254 * hardware at the new frequency, and then re-enable
255 * the relevant bits of the h/w.
257 ath9k_hw_disable_interrupts(ah);
258 stopped = ath_drain_all_txq(sc, false);
260 if (!ath_stoprecv(sc))
263 if (!ath9k_hw_check_alive(ah))
266 /* XXX: do not flush receive queue here. We don't want
267 * to flush data frames already in queue because of
268 * changing channel. */
270 if (!stopped || !(sc->sc_flags & SC_OP_OFFCHANNEL))
273 if (!(sc->sc_flags & SC_OP_OFFCHANNEL))
274 caldata = &sc->caldata;
276 ath_dbg(common, ATH_DBG_CONFIG,
277 "(%u MHz) -> (%u MHz), conf_is_ht40: %d fastcc: %d\n",
278 sc->sc_ah->curchan->channel,
279 channel->center_freq, conf_is_ht40(conf),
282 r = ath9k_hw_reset(ah, hchan, caldata, fastcc);
285 "Unable to reset channel (%u MHz), reset status %d\n",
286 channel->center_freq, r);
290 if (ath_startrecv(sc) != 0) {
291 ath_err(common, "Unable to restart recv logic\n");
296 ath9k_cmn_update_txpow(ah, sc->curtxpow,
297 sc->config.txpowlimit, &sc->curtxpow);
298 ath9k_hw_set_interrupts(ah, ah->imask);
300 if (!(sc->sc_flags & (SC_OP_OFFCHANNEL))) {
301 if (sc->sc_flags & SC_OP_BEACONS)
303 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
304 ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/2);
305 ath_start_ani(common);
309 ieee80211_wake_queues(hw);
311 spin_unlock_bh(&sc->sc_pcu_lock);
313 ath9k_ps_restore(sc);
317 static void ath_paprd_activate(struct ath_softc *sc)
319 struct ath_hw *ah = sc->sc_ah;
320 struct ath9k_hw_cal_data *caldata = ah->caldata;
321 struct ath_common *common = ath9k_hw_common(ah);
324 if (!caldata || !caldata->paprd_done)
328 ar9003_paprd_enable(ah, false);
329 for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
330 if (!(common->tx_chainmask & BIT(chain)))
333 ar9003_paprd_populate_single_table(ah, caldata, chain);
336 ar9003_paprd_enable(ah, true);
337 ath9k_ps_restore(sc);
340 static bool ath_paprd_send_frame(struct ath_softc *sc, struct sk_buff *skb, int chain)
342 struct ieee80211_hw *hw = sc->hw;
343 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
344 struct ath_hw *ah = sc->sc_ah;
345 struct ath_common *common = ath9k_hw_common(ah);
346 struct ath_tx_control txctl;
349 memset(&txctl, 0, sizeof(txctl));
350 txctl.txq = sc->tx.txq_map[WME_AC_BE];
352 memset(tx_info, 0, sizeof(*tx_info));
353 tx_info->band = hw->conf.channel->band;
354 tx_info->flags |= IEEE80211_TX_CTL_NO_ACK;
355 tx_info->control.rates[0].idx = 0;
356 tx_info->control.rates[0].count = 1;
357 tx_info->control.rates[0].flags = IEEE80211_TX_RC_MCS;
358 tx_info->control.rates[1].idx = -1;
360 init_completion(&sc->paprd_complete);
361 txctl.paprd = BIT(chain);
363 if (ath_tx_start(hw, skb, &txctl) != 0) {
364 ath_dbg(common, ATH_DBG_XMIT, "PAPRD TX failed\n");
365 dev_kfree_skb_any(skb);
369 time_left = wait_for_completion_timeout(&sc->paprd_complete,
370 msecs_to_jiffies(ATH_PAPRD_TIMEOUT));
373 ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_CALIBRATE,
374 "Timeout waiting for paprd training on TX chain %d\n",
380 void ath_paprd_calibrate(struct work_struct *work)
382 struct ath_softc *sc = container_of(work, struct ath_softc, paprd_work);
383 struct ieee80211_hw *hw = sc->hw;
384 struct ath_hw *ah = sc->sc_ah;
385 struct ieee80211_hdr *hdr;
386 struct sk_buff *skb = NULL;
387 struct ath9k_hw_cal_data *caldata = ah->caldata;
388 struct ath_common *common = ath9k_hw_common(ah);
397 if (ar9003_paprd_init_table(ah) < 0)
400 skb = alloc_skb(len, GFP_KERNEL);
405 memset(skb->data, 0, len);
406 hdr = (struct ieee80211_hdr *)skb->data;
407 ftype = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC;
408 hdr->frame_control = cpu_to_le16(ftype);
409 hdr->duration_id = cpu_to_le16(10);
410 memcpy(hdr->addr1, hw->wiphy->perm_addr, ETH_ALEN);
411 memcpy(hdr->addr2, hw->wiphy->perm_addr, ETH_ALEN);
412 memcpy(hdr->addr3, hw->wiphy->perm_addr, ETH_ALEN);
415 for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
416 if (!(common->tx_chainmask & BIT(chain)))
421 ath_dbg(common, ATH_DBG_CALIBRATE,
422 "Sending PAPRD frame for thermal measurement "
423 "on chain %d\n", chain);
424 if (!ath_paprd_send_frame(sc, skb, chain))
427 ar9003_paprd_setup_gain_table(ah, chain);
429 ath_dbg(common, ATH_DBG_CALIBRATE,
430 "Sending PAPRD training frame on chain %d\n", chain);
431 if (!ath_paprd_send_frame(sc, skb, chain))
434 if (!ar9003_paprd_is_done(ah))
437 if (ar9003_paprd_create_curve(ah, caldata, chain) != 0)
445 caldata->paprd_done = true;
446 ath_paprd_activate(sc);
450 ath9k_ps_restore(sc);
454 * This routine performs the periodic noise floor calibration function
455 * that is used to adjust and optimize the chip performance. This
456 * takes environmental changes (location, temperature) into account.
457 * When the task is complete, it reschedules itself depending on the
458 * appropriate interval that was calculated.
460 void ath_ani_calibrate(unsigned long data)
462 struct ath_softc *sc = (struct ath_softc *)data;
463 struct ath_hw *ah = sc->sc_ah;
464 struct ath_common *common = ath9k_hw_common(ah);
465 bool longcal = false;
466 bool shortcal = false;
467 bool aniflag = false;
468 unsigned int timestamp = jiffies_to_msecs(jiffies);
469 u32 cal_interval, short_cal_interval, long_cal_interval;
472 if (ah->caldata && ah->caldata->nfcal_interference)
473 long_cal_interval = ATH_LONG_CALINTERVAL_INT;
475 long_cal_interval = ATH_LONG_CALINTERVAL;
477 short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ?
478 ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL;
480 /* Only calibrate if awake */
481 if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE)
486 /* Long calibration runs independently of short calibration. */
487 if ((timestamp - common->ani.longcal_timer) >= long_cal_interval) {
489 ath_dbg(common, ATH_DBG_ANI, "longcal @%lu\n", jiffies);
490 common->ani.longcal_timer = timestamp;
493 /* Short calibration applies only while caldone is false */
494 if (!common->ani.caldone) {
495 if ((timestamp - common->ani.shortcal_timer) >= short_cal_interval) {
497 ath_dbg(common, ATH_DBG_ANI,
498 "shortcal @%lu\n", jiffies);
499 common->ani.shortcal_timer = timestamp;
500 common->ani.resetcal_timer = timestamp;
503 if ((timestamp - common->ani.resetcal_timer) >=
504 ATH_RESTART_CALINTERVAL) {
505 common->ani.caldone = ath9k_hw_reset_calvalid(ah);
506 if (common->ani.caldone)
507 common->ani.resetcal_timer = timestamp;
511 /* Verify whether we must check ANI */
512 if ((timestamp - common->ani.checkani_timer) >=
513 ah->config.ani_poll_interval) {
515 common->ani.checkani_timer = timestamp;
518 /* Skip all processing if there's nothing to do. */
519 if (longcal || shortcal || aniflag) {
520 /* Call ANI routine if necessary */
522 spin_lock_irqsave(&common->cc_lock, flags);
523 ath9k_hw_ani_monitor(ah, ah->curchan);
524 ath_update_survey_stats(sc);
525 spin_unlock_irqrestore(&common->cc_lock, flags);
528 /* Perform calibration if necessary */
529 if (longcal || shortcal) {
530 common->ani.caldone =
531 ath9k_hw_calibrate(ah,
533 common->rx_chainmask,
538 ath9k_ps_restore(sc);
542 * Set timer interval based on previous results.
543 * The interval must be the shortest necessary to satisfy ANI,
544 * short calibration and long calibration.
546 cal_interval = ATH_LONG_CALINTERVAL;
547 if (sc->sc_ah->config.enable_ani)
548 cal_interval = min(cal_interval,
549 (u32)ah->config.ani_poll_interval);
550 if (!common->ani.caldone)
551 cal_interval = min(cal_interval, (u32)short_cal_interval);
553 mod_timer(&common->ani.timer, jiffies + msecs_to_jiffies(cal_interval));
554 if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) && ah->caldata) {
555 if (!ah->caldata->paprd_done)
556 ieee80211_queue_work(sc->hw, &sc->paprd_work);
557 else if (!ah->paprd_table_write_done)
558 ath_paprd_activate(sc);
562 static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta)
565 struct ath_hw *ah = sc->sc_ah;
566 an = (struct ath_node *)sta->drv_priv;
568 #ifdef CONFIG_ATH9K_DEBUGFS
569 spin_lock(&sc->nodes_lock);
570 list_add(&an->list, &sc->nodes);
571 spin_unlock(&sc->nodes_lock);
574 if ((ah->caps.hw_caps) & ATH9K_HW_CAP_APM)
575 sc->sc_flags |= SC_OP_ENABLE_APM;
577 if (sc->sc_flags & SC_OP_TXAGGR) {
578 ath_tx_node_init(sc, an);
579 an->maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
580 sta->ht_cap.ampdu_factor);
581 an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density);
585 static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
587 struct ath_node *an = (struct ath_node *)sta->drv_priv;
589 #ifdef CONFIG_ATH9K_DEBUGFS
590 spin_lock(&sc->nodes_lock);
592 spin_unlock(&sc->nodes_lock);
596 if (sc->sc_flags & SC_OP_TXAGGR)
597 ath_tx_node_cleanup(sc, an);
600 void ath_hw_check(struct work_struct *work)
602 struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
603 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
608 if (ath9k_hw_check_alive(sc->sc_ah))
611 spin_lock_irqsave(&common->cc_lock, flags);
612 busy = ath_update_survey_stats(sc);
613 spin_unlock_irqrestore(&common->cc_lock, flags);
615 ath_dbg(common, ATH_DBG_RESET, "Possible baseband hang, "
616 "busy=%d (try %d)\n", busy, sc->hw_busy_count + 1);
618 if (++sc->hw_busy_count >= 3)
620 } else if (busy >= 0)
621 sc->hw_busy_count = 0;
624 ath9k_ps_restore(sc);
627 static void ath_hw_pll_rx_hang_check(struct ath_softc *sc, u32 pll_sqsum)
630 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
632 if (pll_sqsum >= 0x40000) {
635 /* Rx is hung for more than 500ms. Reset it */
636 ath_dbg(common, ATH_DBG_RESET,
637 "Possible RX hang, resetting");
645 void ath_hw_pll_work(struct work_struct *work)
647 struct ath_softc *sc = container_of(work, struct ath_softc,
651 if (AR_SREV_9485(sc->sc_ah)) {
654 pll_sqsum = ar9003_get_pll_sqsum_dvc(sc->sc_ah);
655 ath9k_ps_restore(sc);
657 ath_hw_pll_rx_hang_check(sc, pll_sqsum);
659 ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/5);
664 void ath9k_tasklet(unsigned long data)
666 struct ath_softc *sc = (struct ath_softc *)data;
667 struct ath_hw *ah = sc->sc_ah;
668 struct ath_common *common = ath9k_hw_common(ah);
670 u32 status = sc->intrstatus;
673 if ((status & ATH9K_INT_FATAL) ||
674 (status & ATH9K_INT_BB_WATCHDOG)) {
680 spin_lock(&sc->sc_pcu_lock);
683 * Only run the baseband hang check if beacons stop working in AP or
684 * IBSS mode, because it has a high false positive rate. For station
685 * mode it should not be necessary, since the upper layers will detect
686 * this through a beacon miss automatically and the following channel
687 * change will trigger a hardware reset anyway
689 if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0 &&
690 !ath9k_hw_check_alive(ah))
691 ieee80211_queue_work(sc->hw, &sc->hw_check_work);
693 if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
695 * TSF sync does not look correct; remain awake to sync with
698 ath_dbg(common, ATH_DBG_PS,
699 "TSFOOR - Sync with next Beacon\n");
700 sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC |
704 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
705 rxmask = (ATH9K_INT_RXHP | ATH9K_INT_RXLP | ATH9K_INT_RXEOL |
708 rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
710 if (status & rxmask) {
711 /* Check for high priority Rx first */
712 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
713 (status & ATH9K_INT_RXHP))
714 ath_rx_tasklet(sc, 0, true);
716 ath_rx_tasklet(sc, 0, false);
719 if (status & ATH9K_INT_TX) {
720 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
721 ath_tx_edma_tasklet(sc);
726 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
727 if (status & ATH9K_INT_GENTIMER)
728 ath_gen_timer_isr(sc->sc_ah);
730 /* re-enable hardware interrupt */
731 ath9k_hw_enable_interrupts(ah);
733 spin_unlock(&sc->sc_pcu_lock);
734 ath9k_ps_restore(sc);
737 irqreturn_t ath_isr(int irq, void *dev)
739 #define SCHED_INTR ( \
741 ATH9K_INT_BB_WATCHDOG | \
753 struct ath_softc *sc = dev;
754 struct ath_hw *ah = sc->sc_ah;
755 struct ath_common *common = ath9k_hw_common(ah);
756 enum ath9k_int status;
760 * The hardware is not ready/present, don't
761 * touch anything. Note this can happen early
762 * on if the IRQ is shared.
764 if (sc->sc_flags & SC_OP_INVALID)
768 /* shared irq, not for us */
770 if (!ath9k_hw_intrpend(ah))
774 * Figure out the reason(s) for the interrupt. Note
775 * that the hal returns a pseudo-ISR that may include
776 * bits we haven't explicitly enabled so we mask the
777 * value to insure we only process bits we requested.
779 ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */
780 status &= ah->imask; /* discard unasked-for bits */
783 * If there are no status bits set, then this interrupt was not
784 * for me (should have been caught above).
789 /* Cache the status */
790 sc->intrstatus = status;
792 if (status & SCHED_INTR)
796 * If a FATAL or RXORN interrupt is received, we have to reset the
799 if ((status & ATH9K_INT_FATAL) || ((status & ATH9K_INT_RXORN) &&
800 !(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)))
803 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
804 (status & ATH9K_INT_BB_WATCHDOG)) {
806 spin_lock(&common->cc_lock);
807 ath_hw_cycle_counters_update(common);
808 ar9003_hw_bb_watchdog_dbg_info(ah);
809 spin_unlock(&common->cc_lock);
814 if (status & ATH9K_INT_SWBA)
815 tasklet_schedule(&sc->bcon_tasklet);
817 if (status & ATH9K_INT_TXURN)
818 ath9k_hw_updatetxtriglevel(ah, true);
820 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
821 if (status & ATH9K_INT_RXEOL) {
822 ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
823 ath9k_hw_set_interrupts(ah, ah->imask);
827 if (status & ATH9K_INT_MIB) {
829 * Disable interrupts until we service the MIB
830 * interrupt; otherwise it will continue to
833 ath9k_hw_disable_interrupts(ah);
835 * Let the hal handle the event. We assume
836 * it will clear whatever condition caused
839 spin_lock(&common->cc_lock);
840 ath9k_hw_proc_mib_event(ah);
841 spin_unlock(&common->cc_lock);
842 ath9k_hw_enable_interrupts(ah);
845 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
846 if (status & ATH9K_INT_TIM_TIMER) {
847 if (ATH_DBG_WARN_ON_ONCE(sc->ps_idle))
849 /* Clear RxAbort bit so that we can
851 ath9k_setpower(sc, ATH9K_PM_AWAKE);
852 ath9k_hw_setrxabort(sc->sc_ah, 0);
853 sc->ps_flags |= PS_WAIT_FOR_BEACON;
858 ath_debug_stat_interrupt(sc, status);
861 /* turn off every interrupt */
862 ath9k_hw_disable_interrupts(ah);
863 tasklet_schedule(&sc->intr_tq);
871 void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
873 struct ath_hw *ah = sc->sc_ah;
874 struct ath_common *common = ath9k_hw_common(ah);
875 struct ieee80211_channel *channel = hw->conf.channel;
879 spin_lock_bh(&sc->sc_pcu_lock);
881 ath9k_hw_configpcipowersave(ah, 0, 0);
884 ah->curchan = ath9k_cmn_get_curchannel(sc->hw, ah);
886 r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
889 "Unable to reset channel (%u MHz), reset status %d\n",
890 channel->center_freq, r);
893 ath9k_cmn_update_txpow(ah, sc->curtxpow,
894 sc->config.txpowlimit, &sc->curtxpow);
895 if (ath_startrecv(sc) != 0) {
896 ath_err(common, "Unable to restart recv logic\n");
899 if (sc->sc_flags & SC_OP_BEACONS)
900 ath_set_beacon(sc); /* restart beacons */
902 /* Re-Enable interrupts */
903 ath9k_hw_set_interrupts(ah, ah->imask);
906 ath9k_hw_cfg_output(ah, ah->led_pin,
907 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
908 ath9k_hw_set_gpio(ah, ah->led_pin, 0);
910 ieee80211_wake_queues(hw);
911 ieee80211_queue_delayed_work(hw, &sc->hw_pll_work, HZ/2);
914 spin_unlock_bh(&sc->sc_pcu_lock);
916 ath9k_ps_restore(sc);
919 void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw)
921 struct ath_hw *ah = sc->sc_ah;
922 struct ieee80211_channel *channel = hw->conf.channel;
926 cancel_delayed_work_sync(&sc->hw_pll_work);
928 spin_lock_bh(&sc->sc_pcu_lock);
930 ieee80211_stop_queues(hw);
933 * Keep the LED on when the radio is disabled
934 * during idle unassociated state.
937 ath9k_hw_set_gpio(ah, ah->led_pin, 1);
938 ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
941 /* Disable interrupts */
942 ath9k_hw_disable_interrupts(ah);
944 ath_drain_all_txq(sc, false); /* clear pending tx frames */
946 ath_stoprecv(sc); /* turn off frame recv */
947 ath_flushrecv(sc); /* flush recv queue */
950 ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
952 r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
954 ath_err(ath9k_hw_common(sc->sc_ah),
955 "Unable to reset channel (%u MHz), reset status %d\n",
956 channel->center_freq, r);
959 ath9k_hw_phy_disable(ah);
961 ath9k_hw_configpcipowersave(ah, 1, 1);
963 spin_unlock_bh(&sc->sc_pcu_lock);
964 ath9k_ps_restore(sc);
967 int ath_reset(struct ath_softc *sc, bool retry_tx)
969 struct ath_hw *ah = sc->sc_ah;
970 struct ath_common *common = ath9k_hw_common(ah);
971 struct ieee80211_hw *hw = sc->hw;
974 sc->hw_busy_count = 0;
977 del_timer_sync(&common->ani.timer);
980 spin_lock_bh(&sc->sc_pcu_lock);
982 ieee80211_stop_queues(hw);
984 ath9k_hw_disable_interrupts(ah);
985 ath_drain_all_txq(sc, retry_tx);
990 r = ath9k_hw_reset(ah, sc->sc_ah->curchan, ah->caldata, false);
993 "Unable to reset hardware; reset status %d\n", r);
995 if (ath_startrecv(sc) != 0)
996 ath_err(common, "Unable to start recv logic\n");
999 * We may be doing a reset in response to a request
1000 * that changes the channel so update any state that
1001 * might change as a result.
1003 ath9k_cmn_update_txpow(ah, sc->curtxpow,
1004 sc->config.txpowlimit, &sc->curtxpow);
1006 if ((sc->sc_flags & SC_OP_BEACONS) || !(sc->sc_flags & (SC_OP_OFFCHANNEL)))
1007 ath_set_beacon(sc); /* restart beacons */
1009 ath9k_hw_set_interrupts(ah, ah->imask);
1013 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
1014 if (ATH_TXQ_SETUP(sc, i)) {
1015 spin_lock_bh(&sc->tx.txq[i].axq_lock);
1016 ath_txq_schedule(sc, &sc->tx.txq[i]);
1017 spin_unlock_bh(&sc->tx.txq[i].axq_lock);
1022 ieee80211_wake_queues(hw);
1023 spin_unlock_bh(&sc->sc_pcu_lock);
1026 ath_start_ani(common);
1027 ath9k_ps_restore(sc);
1032 /**********************/
1033 /* mac80211 callbacks */
1034 /**********************/
1036 static int ath9k_start(struct ieee80211_hw *hw)
1038 struct ath_softc *sc = hw->priv;
1039 struct ath_hw *ah = sc->sc_ah;
1040 struct ath_common *common = ath9k_hw_common(ah);
1041 struct ieee80211_channel *curchan = hw->conf.channel;
1042 struct ath9k_channel *init_channel;
1045 ath_dbg(common, ATH_DBG_CONFIG,
1046 "Starting driver with initial channel: %d MHz\n",
1047 curchan->center_freq);
1049 ath9k_ps_wakeup(sc);
1051 mutex_lock(&sc->mutex);
1053 /* setup initial channel */
1054 sc->chan_idx = curchan->hw_value;
1056 init_channel = ath9k_cmn_get_curchannel(hw, ah);
1058 /* Reset SERDES registers */
1059 ath9k_hw_configpcipowersave(ah, 0, 0);
1062 * The basic interface to setting the hardware in a good
1063 * state is ``reset''. On return the hardware is known to
1064 * be powered up and with interrupts disabled. This must
1065 * be followed by initialization of the appropriate bits
1066 * and then setup of the interrupt mask.
1068 spin_lock_bh(&sc->sc_pcu_lock);
1069 r = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
1072 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
1073 r, curchan->center_freq);
1074 spin_unlock_bh(&sc->sc_pcu_lock);
1079 * This is needed only to setup initial state
1080 * but it's best done after a reset.
1082 ath9k_cmn_update_txpow(ah, sc->curtxpow,
1083 sc->config.txpowlimit, &sc->curtxpow);
1086 * Setup the hardware after reset:
1087 * The receive engine is set going.
1088 * Frame transmit is handled entirely
1089 * in the frame output path; there's nothing to do
1090 * here except setup the interrupt mask.
1092 if (ath_startrecv(sc) != 0) {
1093 ath_err(common, "Unable to start recv logic\n");
1095 spin_unlock_bh(&sc->sc_pcu_lock);
1098 spin_unlock_bh(&sc->sc_pcu_lock);
1100 /* Setup our intr mask. */
1101 ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL |
1102 ATH9K_INT_RXORN | ATH9K_INT_FATAL |
1105 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
1106 ah->imask |= ATH9K_INT_RXHP |
1108 ATH9K_INT_BB_WATCHDOG;
1110 ah->imask |= ATH9K_INT_RX;
1112 ah->imask |= ATH9K_INT_GTT;
1114 if (ah->caps.hw_caps & ATH9K_HW_CAP_HT)
1115 ah->imask |= ATH9K_INT_CST;
1117 sc->sc_flags &= ~SC_OP_INVALID;
1118 sc->sc_ah->is_monitoring = false;
1120 /* Disable BMISS interrupt when we're not associated */
1121 ah->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
1122 ath9k_hw_set_interrupts(ah, ah->imask);
1124 ieee80211_wake_queues(hw);
1126 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
1128 if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) &&
1129 !ah->btcoex_hw.enabled) {
1130 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
1131 AR_STOMP_LOW_WLAN_WGHT);
1132 ath9k_hw_btcoex_enable(ah);
1134 if (common->bus_ops->bt_coex_prep)
1135 common->bus_ops->bt_coex_prep(common);
1136 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
1137 ath9k_btcoex_timer_resume(sc);
1140 if (ah->caps.pcie_lcr_extsync_en && common->bus_ops->extn_synch_en)
1141 common->bus_ops->extn_synch_en(common);
1144 mutex_unlock(&sc->mutex);
1146 ath9k_ps_restore(sc);
1151 static void ath9k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1153 struct ath_softc *sc = hw->priv;
1154 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1155 struct ath_tx_control txctl;
1156 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1158 if (sc->ps_enabled) {
1160 * mac80211 does not set PM field for normal data frames, so we
1161 * need to update that based on the current PS mode.
1163 if (ieee80211_is_data(hdr->frame_control) &&
1164 !ieee80211_is_nullfunc(hdr->frame_control) &&
1165 !ieee80211_has_pm(hdr->frame_control)) {
1166 ath_dbg(common, ATH_DBG_PS,
1167 "Add PM=1 for a TX frame while in PS mode\n");
1168 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1172 if (unlikely(sc->sc_ah->power_mode != ATH9K_PM_AWAKE)) {
1174 * We are using PS-Poll and mac80211 can request TX while in
1175 * power save mode. Need to wake up hardware for the TX to be
1176 * completed and if needed, also for RX of buffered frames.
1178 ath9k_ps_wakeup(sc);
1179 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
1180 ath9k_hw_setrxabort(sc->sc_ah, 0);
1181 if (ieee80211_is_pspoll(hdr->frame_control)) {
1182 ath_dbg(common, ATH_DBG_PS,
1183 "Sending PS-Poll to pick a buffered frame\n");
1184 sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA;
1186 ath_dbg(common, ATH_DBG_PS,
1187 "Wake up to complete TX\n");
1188 sc->ps_flags |= PS_WAIT_FOR_TX_ACK;
1191 * The actual restore operation will happen only after
1192 * the sc_flags bit is cleared. We are just dropping
1193 * the ps_usecount here.
1195 ath9k_ps_restore(sc);
1198 memset(&txctl, 0, sizeof(struct ath_tx_control));
1199 txctl.txq = sc->tx.txq_map[skb_get_queue_mapping(skb)];
1201 ath_dbg(common, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb);
1203 if (ath_tx_start(hw, skb, &txctl) != 0) {
1204 ath_dbg(common, ATH_DBG_XMIT, "TX failed\n");
1210 dev_kfree_skb_any(skb);
1213 static void ath9k_stop(struct ieee80211_hw *hw)
1215 struct ath_softc *sc = hw->priv;
1216 struct ath_hw *ah = sc->sc_ah;
1217 struct ath_common *common = ath9k_hw_common(ah);
1219 mutex_lock(&sc->mutex);
1221 cancel_delayed_work_sync(&sc->tx_complete_work);
1222 cancel_delayed_work_sync(&sc->hw_pll_work);
1223 cancel_work_sync(&sc->paprd_work);
1224 cancel_work_sync(&sc->hw_check_work);
1226 if (sc->sc_flags & SC_OP_INVALID) {
1227 ath_dbg(common, ATH_DBG_ANY, "Device not present\n");
1228 mutex_unlock(&sc->mutex);
1232 /* Ensure HW is awake when we try to shut it down. */
1233 ath9k_ps_wakeup(sc);
1235 if (ah->btcoex_hw.enabled) {
1236 ath9k_hw_btcoex_disable(ah);
1237 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
1238 ath9k_btcoex_timer_pause(sc);
1241 spin_lock_bh(&sc->sc_pcu_lock);
1243 /* prevent tasklets to enable interrupts once we disable them */
1244 ah->imask &= ~ATH9K_INT_GLOBAL;
1246 /* make sure h/w will not generate any interrupt
1247 * before setting the invalid flag. */
1248 ath9k_hw_disable_interrupts(ah);
1250 if (!(sc->sc_flags & SC_OP_INVALID)) {
1251 ath_drain_all_txq(sc, false);
1253 ath9k_hw_phy_disable(ah);
1255 sc->rx.rxlink = NULL;
1258 dev_kfree_skb_any(sc->rx.frag);
1262 /* disable HAL and put h/w to sleep */
1263 ath9k_hw_disable(ah);
1264 ath9k_hw_configpcipowersave(ah, 1, 1);
1266 spin_unlock_bh(&sc->sc_pcu_lock);
1268 /* we can now sync irq and kill any running tasklets, since we already
1269 * disabled interrupts and not holding a spin lock */
1270 synchronize_irq(sc->irq);
1271 tasklet_kill(&sc->intr_tq);
1272 tasklet_kill(&sc->bcon_tasklet);
1274 ath9k_ps_restore(sc);
1277 ath_radio_disable(sc, hw);
1279 sc->sc_flags |= SC_OP_INVALID;
1281 mutex_unlock(&sc->mutex);
1283 ath_dbg(common, ATH_DBG_CONFIG, "Driver halt\n");
1286 bool ath9k_uses_beacons(int type)
1289 case NL80211_IFTYPE_AP:
1290 case NL80211_IFTYPE_ADHOC:
1291 case NL80211_IFTYPE_MESH_POINT:
1298 static void ath9k_reclaim_beacon(struct ath_softc *sc,
1299 struct ieee80211_vif *vif)
1301 struct ath_vif *avp = (void *)vif->drv_priv;
1303 ath9k_set_beaconing_status(sc, false);
1304 ath_beacon_return(sc, avp);
1305 ath9k_set_beaconing_status(sc, true);
1306 sc->sc_flags &= ~SC_OP_BEACONS;
1309 static void ath9k_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
1311 struct ath9k_vif_iter_data *iter_data = data;
1314 if (iter_data->hw_macaddr)
1315 for (i = 0; i < ETH_ALEN; i++)
1316 iter_data->mask[i] &=
1317 ~(iter_data->hw_macaddr[i] ^ mac[i]);
1319 switch (vif->type) {
1320 case NL80211_IFTYPE_AP:
1323 case NL80211_IFTYPE_STATION:
1324 iter_data->nstations++;
1326 case NL80211_IFTYPE_ADHOC:
1327 iter_data->nadhocs++;
1329 case NL80211_IFTYPE_MESH_POINT:
1330 iter_data->nmeshes++;
1332 case NL80211_IFTYPE_WDS:
1336 iter_data->nothers++;
1341 /* Called with sc->mutex held. */
1342 void ath9k_calculate_iter_data(struct ieee80211_hw *hw,
1343 struct ieee80211_vif *vif,
1344 struct ath9k_vif_iter_data *iter_data)
1346 struct ath_softc *sc = hw->priv;
1347 struct ath_hw *ah = sc->sc_ah;
1348 struct ath_common *common = ath9k_hw_common(ah);
1351 * Use the hardware MAC address as reference, the hardware uses it
1352 * together with the BSSID mask when matching addresses.
1354 memset(iter_data, 0, sizeof(*iter_data));
1355 iter_data->hw_macaddr = common->macaddr;
1356 memset(&iter_data->mask, 0xff, ETH_ALEN);
1359 ath9k_vif_iter(iter_data, vif->addr, vif);
1361 /* Get list of all active MAC addresses */
1362 ieee80211_iterate_active_interfaces_atomic(sc->hw, ath9k_vif_iter,
1366 /* Called with sc->mutex held. */
1367 static void ath9k_calculate_summary_state(struct ieee80211_hw *hw,
1368 struct ieee80211_vif *vif)
1370 struct ath_softc *sc = hw->priv;
1371 struct ath_hw *ah = sc->sc_ah;
1372 struct ath_common *common = ath9k_hw_common(ah);
1373 struct ath9k_vif_iter_data iter_data;
1375 ath9k_calculate_iter_data(hw, vif, &iter_data);
1377 /* Set BSSID mask. */
1378 memcpy(common->bssidmask, iter_data.mask, ETH_ALEN);
1379 ath_hw_setbssidmask(common);
1381 /* Set op-mode & TSF */
1382 if (iter_data.naps > 0) {
1383 ath9k_hw_set_tsfadjust(ah, 1);
1384 sc->sc_flags |= SC_OP_TSF_RESET;
1385 ah->opmode = NL80211_IFTYPE_AP;
1387 ath9k_hw_set_tsfadjust(ah, 0);
1388 sc->sc_flags &= ~SC_OP_TSF_RESET;
1390 if (iter_data.nmeshes)
1391 ah->opmode = NL80211_IFTYPE_MESH_POINT;
1392 else if (iter_data.nwds)
1393 ah->opmode = NL80211_IFTYPE_AP;
1394 else if (iter_data.nadhocs)
1395 ah->opmode = NL80211_IFTYPE_ADHOC;
1397 ah->opmode = NL80211_IFTYPE_STATION;
1401 * Enable MIB interrupts when there are hardware phy counters.
1403 if ((iter_data.nstations + iter_data.nadhocs + iter_data.nmeshes) > 0) {
1404 if (ah->config.enable_ani)
1405 ah->imask |= ATH9K_INT_MIB;
1406 ah->imask |= ATH9K_INT_TSFOOR;
1408 ah->imask &= ~ATH9K_INT_MIB;
1409 ah->imask &= ~ATH9K_INT_TSFOOR;
1412 ath9k_hw_set_interrupts(ah, ah->imask);
1415 if ((iter_data.naps + iter_data.nadhocs) > 0) {
1416 sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
1417 sc->sc_flags |= SC_OP_ANI_RUN;
1418 ath_start_ani(common);
1420 sc->sc_flags &= ~SC_OP_ANI_RUN;
1421 del_timer_sync(&common->ani.timer);
1425 /* Called with sc->mutex held, vif counts set up properly. */
1426 static void ath9k_do_vif_add_setup(struct ieee80211_hw *hw,
1427 struct ieee80211_vif *vif)
1429 struct ath_softc *sc = hw->priv;
1431 ath9k_calculate_summary_state(hw, vif);
1433 if (ath9k_uses_beacons(vif->type)) {
1435 /* This may fail because upper levels do not have beacons
1436 * properly configured yet. That's OK, we assume it
1437 * will be properly configured and then we will be notified
1438 * in the info_changed method and set up beacons properly
1441 ath9k_set_beaconing_status(sc, false);
1442 error = ath_beacon_alloc(sc, vif);
1444 ath_beacon_config(sc, vif);
1445 ath9k_set_beaconing_status(sc, true);
1450 static int ath9k_add_interface(struct ieee80211_hw *hw,
1451 struct ieee80211_vif *vif)
1453 struct ath_softc *sc = hw->priv;
1454 struct ath_hw *ah = sc->sc_ah;
1455 struct ath_common *common = ath9k_hw_common(ah);
1458 ath9k_ps_wakeup(sc);
1459 mutex_lock(&sc->mutex);
1461 switch (vif->type) {
1462 case NL80211_IFTYPE_STATION:
1463 case NL80211_IFTYPE_WDS:
1464 case NL80211_IFTYPE_ADHOC:
1465 case NL80211_IFTYPE_AP:
1466 case NL80211_IFTYPE_MESH_POINT:
1469 ath_err(common, "Interface type %d not yet supported\n",
1475 if (ath9k_uses_beacons(vif->type)) {
1476 if (sc->nbcnvifs >= ATH_BCBUF) {
1477 ath_err(common, "Not enough beacon buffers when adding"
1478 " new interface of type: %i\n",
1485 if ((ah->opmode == NL80211_IFTYPE_ADHOC) ||
1486 ((vif->type == NL80211_IFTYPE_ADHOC) &&
1488 ath_err(common, "Cannot create ADHOC interface when other"
1489 " interfaces already exist.\n");
1494 ath_dbg(common, ATH_DBG_CONFIG,
1495 "Attach a VIF of type: %d\n", vif->type);
1499 ath9k_do_vif_add_setup(hw, vif);
1501 mutex_unlock(&sc->mutex);
1502 ath9k_ps_restore(sc);
1506 static int ath9k_change_interface(struct ieee80211_hw *hw,
1507 struct ieee80211_vif *vif,
1508 enum nl80211_iftype new_type,
1511 struct ath_softc *sc = hw->priv;
1512 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1515 ath_dbg(common, ATH_DBG_CONFIG, "Change Interface\n");
1516 mutex_lock(&sc->mutex);
1517 ath9k_ps_wakeup(sc);
1519 /* See if new interface type is valid. */
1520 if ((new_type == NL80211_IFTYPE_ADHOC) &&
1522 ath_err(common, "When using ADHOC, it must be the only"
1528 if (ath9k_uses_beacons(new_type) &&
1529 !ath9k_uses_beacons(vif->type)) {
1530 if (sc->nbcnvifs >= ATH_BCBUF) {
1531 ath_err(common, "No beacon slot available\n");
1537 /* Clean up old vif stuff */
1538 if (ath9k_uses_beacons(vif->type))
1539 ath9k_reclaim_beacon(sc, vif);
1541 /* Add new settings */
1542 vif->type = new_type;
1545 ath9k_do_vif_add_setup(hw, vif);
1547 ath9k_ps_restore(sc);
1548 mutex_unlock(&sc->mutex);
1552 static void ath9k_remove_interface(struct ieee80211_hw *hw,
1553 struct ieee80211_vif *vif)
1555 struct ath_softc *sc = hw->priv;
1556 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1558 ath_dbg(common, ATH_DBG_CONFIG, "Detach Interface\n");
1560 ath9k_ps_wakeup(sc);
1561 mutex_lock(&sc->mutex);
1565 /* Reclaim beacon resources */
1566 if (ath9k_uses_beacons(vif->type))
1567 ath9k_reclaim_beacon(sc, vif);
1569 ath9k_calculate_summary_state(hw, NULL);
1571 mutex_unlock(&sc->mutex);
1572 ath9k_ps_restore(sc);
1575 static void ath9k_enable_ps(struct ath_softc *sc)
1577 struct ath_hw *ah = sc->sc_ah;
1579 sc->ps_enabled = true;
1580 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1581 if ((ah->imask & ATH9K_INT_TIM_TIMER) == 0) {
1582 ah->imask |= ATH9K_INT_TIM_TIMER;
1583 ath9k_hw_set_interrupts(ah, ah->imask);
1585 ath9k_hw_setrxabort(ah, 1);
1589 static void ath9k_disable_ps(struct ath_softc *sc)
1591 struct ath_hw *ah = sc->sc_ah;
1593 sc->ps_enabled = false;
1594 ath9k_hw_setpower(ah, ATH9K_PM_AWAKE);
1595 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1596 ath9k_hw_setrxabort(ah, 0);
1597 sc->ps_flags &= ~(PS_WAIT_FOR_BEACON |
1599 PS_WAIT_FOR_PSPOLL_DATA |
1600 PS_WAIT_FOR_TX_ACK);
1601 if (ah->imask & ATH9K_INT_TIM_TIMER) {
1602 ah->imask &= ~ATH9K_INT_TIM_TIMER;
1603 ath9k_hw_set_interrupts(ah, ah->imask);
1609 static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
1611 struct ath_softc *sc = hw->priv;
1612 struct ath_hw *ah = sc->sc_ah;
1613 struct ath_common *common = ath9k_hw_common(ah);
1614 struct ieee80211_conf *conf = &hw->conf;
1615 bool disable_radio = false;
1617 mutex_lock(&sc->mutex);
1620 * Leave this as the first check because we need to turn on the
1621 * radio if it was disabled before prior to processing the rest
1622 * of the changes. Likewise we must only disable the radio towards
1625 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1626 sc->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1628 ath_radio_enable(sc, hw);
1629 ath_dbg(common, ATH_DBG_CONFIG,
1630 "not-idle: enabling radio\n");
1632 disable_radio = true;
1637 * We just prepare to enable PS. We have to wait until our AP has
1638 * ACK'd our null data frame to disable RX otherwise we'll ignore
1639 * those ACKs and end up retransmitting the same null data frames.
1640 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1642 if (changed & IEEE80211_CONF_CHANGE_PS) {
1643 unsigned long flags;
1644 spin_lock_irqsave(&sc->sc_pm_lock, flags);
1645 if (conf->flags & IEEE80211_CONF_PS)
1646 ath9k_enable_ps(sc);
1648 ath9k_disable_ps(sc);
1649 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
1652 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
1653 if (conf->flags & IEEE80211_CONF_MONITOR) {
1654 ath_dbg(common, ATH_DBG_CONFIG,
1655 "Monitor mode is enabled\n");
1656 sc->sc_ah->is_monitoring = true;
1658 ath_dbg(common, ATH_DBG_CONFIG,
1659 "Monitor mode is disabled\n");
1660 sc->sc_ah->is_monitoring = false;
1664 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1665 struct ieee80211_channel *curchan = hw->conf.channel;
1666 int pos = curchan->hw_value;
1668 unsigned long flags;
1671 old_pos = ah->curchan - &ah->channels[0];
1673 if (hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
1674 sc->sc_flags |= SC_OP_OFFCHANNEL;
1676 sc->sc_flags &= ~SC_OP_OFFCHANNEL;
1678 ath_dbg(common, ATH_DBG_CONFIG,
1679 "Set channel: %d MHz type: %d\n",
1680 curchan->center_freq, conf->channel_type);
1682 ath9k_cmn_update_ichannel(&sc->sc_ah->channels[pos],
1683 curchan, conf->channel_type);
1685 /* update survey stats for the old channel before switching */
1686 spin_lock_irqsave(&common->cc_lock, flags);
1687 ath_update_survey_stats(sc);
1688 spin_unlock_irqrestore(&common->cc_lock, flags);
1691 * If the operating channel changes, change the survey in-use flags
1693 * Reset the survey data for the new channel, unless we're switching
1694 * back to the operating channel from an off-channel operation.
1696 if (!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) &&
1697 sc->cur_survey != &sc->survey[pos]) {
1700 sc->cur_survey->filled &= ~SURVEY_INFO_IN_USE;
1702 sc->cur_survey = &sc->survey[pos];
1704 memset(sc->cur_survey, 0, sizeof(struct survey_info));
1705 sc->cur_survey->filled |= SURVEY_INFO_IN_USE;
1706 } else if (!(sc->survey[pos].filled & SURVEY_INFO_IN_USE)) {
1707 memset(&sc->survey[pos], 0, sizeof(struct survey_info));
1710 if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
1711 ath_err(common, "Unable to set channel\n");
1712 mutex_unlock(&sc->mutex);
1717 * The most recent snapshot of channel->noisefloor for the old
1718 * channel is only available after the hardware reset. Copy it to
1719 * the survey stats now.
1722 ath_update_survey_nf(sc, old_pos);
1725 if (changed & IEEE80211_CONF_CHANGE_POWER) {
1726 ath_dbg(common, ATH_DBG_CONFIG,
1727 "Set power: %d\n", conf->power_level);
1728 sc->config.txpowlimit = 2 * conf->power_level;
1729 ath9k_ps_wakeup(sc);
1730 ath9k_cmn_update_txpow(ah, sc->curtxpow,
1731 sc->config.txpowlimit, &sc->curtxpow);
1732 ath9k_ps_restore(sc);
1735 if (disable_radio) {
1736 ath_dbg(common, ATH_DBG_CONFIG, "idle: disabling radio\n");
1737 ath_radio_disable(sc, hw);
1740 mutex_unlock(&sc->mutex);
1745 #define SUPPORTED_FILTERS \
1746 (FIF_PROMISC_IN_BSS | \
1751 FIF_BCN_PRBRESP_PROMISC | \
1755 /* FIXME: sc->sc_full_reset ? */
1756 static void ath9k_configure_filter(struct ieee80211_hw *hw,
1757 unsigned int changed_flags,
1758 unsigned int *total_flags,
1761 struct ath_softc *sc = hw->priv;
1764 changed_flags &= SUPPORTED_FILTERS;
1765 *total_flags &= SUPPORTED_FILTERS;
1767 sc->rx.rxfilter = *total_flags;
1768 ath9k_ps_wakeup(sc);
1769 rfilt = ath_calcrxfilter(sc);
1770 ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
1771 ath9k_ps_restore(sc);
1773 ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG,
1774 "Set HW RX filter: 0x%x\n", rfilt);
1777 static int ath9k_sta_add(struct ieee80211_hw *hw,
1778 struct ieee80211_vif *vif,
1779 struct ieee80211_sta *sta)
1781 struct ath_softc *sc = hw->priv;
1782 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1783 struct ath_node *an = (struct ath_node *) sta->drv_priv;
1784 struct ieee80211_key_conf ps_key = { };
1786 ath_node_attach(sc, sta);
1788 if (vif->type != NL80211_IFTYPE_AP &&
1789 vif->type != NL80211_IFTYPE_AP_VLAN)
1792 an->ps_key = ath_key_config(common, vif, sta, &ps_key);
1797 static void ath9k_del_ps_key(struct ath_softc *sc,
1798 struct ieee80211_vif *vif,
1799 struct ieee80211_sta *sta)
1801 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1802 struct ath_node *an = (struct ath_node *) sta->drv_priv;
1803 struct ieee80211_key_conf ps_key = { .hw_key_idx = an->ps_key };
1808 ath_key_delete(common, &ps_key);
1811 static int ath9k_sta_remove(struct ieee80211_hw *hw,
1812 struct ieee80211_vif *vif,
1813 struct ieee80211_sta *sta)
1815 struct ath_softc *sc = hw->priv;
1817 ath9k_del_ps_key(sc, vif, sta);
1818 ath_node_detach(sc, sta);
1823 static void ath9k_sta_notify(struct ieee80211_hw *hw,
1824 struct ieee80211_vif *vif,
1825 enum sta_notify_cmd cmd,
1826 struct ieee80211_sta *sta)
1828 struct ath_softc *sc = hw->priv;
1829 struct ath_node *an = (struct ath_node *) sta->drv_priv;
1832 case STA_NOTIFY_SLEEP:
1833 an->sleeping = true;
1834 if (ath_tx_aggr_sleep(sc, an))
1835 ieee80211_sta_set_tim(sta);
1837 case STA_NOTIFY_AWAKE:
1838 an->sleeping = false;
1839 ath_tx_aggr_wakeup(sc, an);
1844 static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue,
1845 const struct ieee80211_tx_queue_params *params)
1847 struct ath_softc *sc = hw->priv;
1848 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1849 struct ath_txq *txq;
1850 struct ath9k_tx_queue_info qi;
1853 if (queue >= WME_NUM_AC)
1856 txq = sc->tx.txq_map[queue];
1858 ath9k_ps_wakeup(sc);
1859 mutex_lock(&sc->mutex);
1861 memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
1863 qi.tqi_aifs = params->aifs;
1864 qi.tqi_cwmin = params->cw_min;
1865 qi.tqi_cwmax = params->cw_max;
1866 qi.tqi_burstTime = params->txop;
1868 ath_dbg(common, ATH_DBG_CONFIG,
1869 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1870 queue, txq->axq_qnum, params->aifs, params->cw_min,
1871 params->cw_max, params->txop);
1873 ret = ath_txq_update(sc, txq->axq_qnum, &qi);
1875 ath_err(common, "TXQ Update failed\n");
1877 if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC)
1878 if (queue == WME_AC_BE && !ret)
1879 ath_beaconq_config(sc);
1881 mutex_unlock(&sc->mutex);
1882 ath9k_ps_restore(sc);
1887 static int ath9k_set_key(struct ieee80211_hw *hw,
1888 enum set_key_cmd cmd,
1889 struct ieee80211_vif *vif,
1890 struct ieee80211_sta *sta,
1891 struct ieee80211_key_conf *key)
1893 struct ath_softc *sc = hw->priv;
1894 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1897 if (ath9k_modparam_nohwcrypt)
1900 if (vif->type == NL80211_IFTYPE_ADHOC &&
1901 (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
1902 key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
1903 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
1905 * For now, disable hw crypto for the RSN IBSS group keys. This
1906 * could be optimized in the future to use a modified key cache
1907 * design to support per-STA RX GTK, but until that gets
1908 * implemented, use of software crypto for group addressed
1909 * frames is a acceptable to allow RSN IBSS to be used.
1914 mutex_lock(&sc->mutex);
1915 ath9k_ps_wakeup(sc);
1916 ath_dbg(common, ATH_DBG_CONFIG, "Set HW Key\n");
1921 ath9k_del_ps_key(sc, vif, sta);
1923 ret = ath_key_config(common, vif, sta, key);
1925 key->hw_key_idx = ret;
1926 /* push IV and Michael MIC generation to stack */
1927 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1928 if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
1929 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1930 if (sc->sc_ah->sw_mgmt_crypto &&
1931 key->cipher == WLAN_CIPHER_SUITE_CCMP)
1932 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
1937 ath_key_delete(common, key);
1943 ath9k_ps_restore(sc);
1944 mutex_unlock(&sc->mutex);
1948 static void ath9k_bss_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
1950 struct ath_softc *sc = data;
1951 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1952 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1953 struct ath_vif *avp = (void *)vif->drv_priv;
1955 switch (sc->sc_ah->opmode) {
1956 case NL80211_IFTYPE_ADHOC:
1957 /* There can be only one vif available */
1958 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1959 common->curaid = bss_conf->aid;
1960 ath9k_hw_write_associd(sc->sc_ah);
1961 /* configure beacon */
1962 if (bss_conf->enable_beacon)
1963 ath_beacon_config(sc, vif);
1965 case NL80211_IFTYPE_STATION:
1967 * Skip iteration if primary station vif's bss info
1970 if (sc->sc_flags & SC_OP_PRIM_STA_VIF)
1973 if (bss_conf->assoc) {
1974 sc->sc_flags |= SC_OP_PRIM_STA_VIF;
1975 avp->primary_sta_vif = true;
1976 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1977 common->curaid = bss_conf->aid;
1978 ath9k_hw_write_associd(sc->sc_ah);
1979 ath_dbg(common, ATH_DBG_CONFIG,
1980 "Bss Info ASSOC %d, bssid: %pM\n",
1981 bss_conf->aid, common->curbssid);
1982 ath_beacon_config(sc, vif);
1984 * Request a re-configuration of Beacon related timers
1985 * on the receipt of the first Beacon frame (i.e.,
1986 * after time sync with the AP).
1988 sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON;
1989 /* Reset rssi stats */
1990 sc->last_rssi = ATH_RSSI_DUMMY_MARKER;
1991 sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
1993 sc->sc_flags |= SC_OP_ANI_RUN;
1994 ath_start_ani(common);
2002 static void ath9k_config_bss(struct ath_softc *sc, struct ieee80211_vif *vif)
2004 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
2005 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2006 struct ath_vif *avp = (void *)vif->drv_priv;
2008 /* Reconfigure bss info */
2009 if (avp->primary_sta_vif && !bss_conf->assoc) {
2010 ath_dbg(common, ATH_DBG_CONFIG,
2011 "Bss Info DISASSOC %d, bssid %pM\n",
2012 common->curaid, common->curbssid);
2013 sc->sc_flags &= ~(SC_OP_PRIM_STA_VIF | SC_OP_BEACONS);
2014 avp->primary_sta_vif = false;
2015 memset(common->curbssid, 0, ETH_ALEN);
2019 ieee80211_iterate_active_interfaces_atomic(
2020 sc->hw, ath9k_bss_iter, sc);
2023 * None of station vifs are associated.
2026 if ((sc->sc_ah->opmode == NL80211_IFTYPE_STATION) &&
2027 !(sc->sc_flags & SC_OP_PRIM_STA_VIF)) {
2028 ath9k_hw_write_associd(sc->sc_ah);
2030 sc->sc_flags &= ~SC_OP_ANI_RUN;
2031 del_timer_sync(&common->ani.timer);
2035 static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
2036 struct ieee80211_vif *vif,
2037 struct ieee80211_bss_conf *bss_conf,
2040 struct ath_softc *sc = hw->priv;
2041 struct ath_hw *ah = sc->sc_ah;
2042 struct ath_common *common = ath9k_hw_common(ah);
2043 struct ath_vif *avp = (void *)vif->drv_priv;
2047 ath9k_ps_wakeup(sc);
2048 mutex_lock(&sc->mutex);
2050 if (changed & BSS_CHANGED_BSSID) {
2051 ath9k_config_bss(sc, vif);
2053 ath_dbg(common, ATH_DBG_CONFIG, "BSSID: %pM aid: 0x%x\n",
2054 common->curbssid, common->curaid);
2057 /* Enable transmission of beacons (AP, IBSS, MESH) */
2058 if ((changed & BSS_CHANGED_BEACON) ||
2059 ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon)) {
2060 ath9k_set_beaconing_status(sc, false);
2061 error = ath_beacon_alloc(sc, vif);
2063 ath_beacon_config(sc, vif);
2064 ath9k_set_beaconing_status(sc, true);
2067 if (changed & BSS_CHANGED_ERP_SLOT) {
2068 if (bss_conf->use_short_slot)
2072 if (vif->type == NL80211_IFTYPE_AP) {
2074 * Defer update, so that connected stations can adjust
2075 * their settings at the same time.
2076 * See beacon.c for more details
2078 sc->beacon.slottime = slottime;
2079 sc->beacon.updateslot = UPDATE;
2081 ah->slottime = slottime;
2082 ath9k_hw_init_global_settings(ah);
2086 /* Disable transmission of beacons */
2087 if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
2088 !bss_conf->enable_beacon) {
2089 ath9k_set_beaconing_status(sc, false);
2090 avp->is_bslot_active = false;
2091 ath9k_set_beaconing_status(sc, true);
2094 if (changed & BSS_CHANGED_BEACON_INT) {
2096 * In case of AP mode, the HW TSF has to be reset
2097 * when the beacon interval changes.
2099 if (vif->type == NL80211_IFTYPE_AP) {
2100 sc->sc_flags |= SC_OP_TSF_RESET;
2101 ath9k_set_beaconing_status(sc, false);
2102 error = ath_beacon_alloc(sc, vif);
2104 ath_beacon_config(sc, vif);
2105 ath9k_set_beaconing_status(sc, true);
2107 ath_beacon_config(sc, vif);
2110 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
2111 ath_dbg(common, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n",
2112 bss_conf->use_short_preamble);
2113 if (bss_conf->use_short_preamble)
2114 sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
2116 sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT;
2119 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
2120 ath_dbg(common, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n",
2121 bss_conf->use_cts_prot);
2122 if (bss_conf->use_cts_prot &&
2123 hw->conf.channel->band != IEEE80211_BAND_5GHZ)
2124 sc->sc_flags |= SC_OP_PROTECT_ENABLE;
2126 sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
2129 mutex_unlock(&sc->mutex);
2130 ath9k_ps_restore(sc);
2133 static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
2135 struct ath_softc *sc = hw->priv;
2138 mutex_lock(&sc->mutex);
2139 ath9k_ps_wakeup(sc);
2140 tsf = ath9k_hw_gettsf64(sc->sc_ah);
2141 ath9k_ps_restore(sc);
2142 mutex_unlock(&sc->mutex);
2147 static void ath9k_set_tsf(struct ieee80211_hw *hw, u64 tsf)
2149 struct ath_softc *sc = hw->priv;
2151 mutex_lock(&sc->mutex);
2152 ath9k_ps_wakeup(sc);
2153 ath9k_hw_settsf64(sc->sc_ah, tsf);
2154 ath9k_ps_restore(sc);
2155 mutex_unlock(&sc->mutex);
2158 static void ath9k_reset_tsf(struct ieee80211_hw *hw)
2160 struct ath_softc *sc = hw->priv;
2162 mutex_lock(&sc->mutex);
2164 ath9k_ps_wakeup(sc);
2165 ath9k_hw_reset_tsf(sc->sc_ah);
2166 ath9k_ps_restore(sc);
2168 mutex_unlock(&sc->mutex);
2171 static int ath9k_ampdu_action(struct ieee80211_hw *hw,
2172 struct ieee80211_vif *vif,
2173 enum ieee80211_ampdu_mlme_action action,
2174 struct ieee80211_sta *sta,
2175 u16 tid, u16 *ssn, u8 buf_size)
2177 struct ath_softc *sc = hw->priv;
2183 case IEEE80211_AMPDU_RX_START:
2184 if (!(sc->sc_flags & SC_OP_RXAGGR))
2187 case IEEE80211_AMPDU_RX_STOP:
2189 case IEEE80211_AMPDU_TX_START:
2190 if (!(sc->sc_flags & SC_OP_TXAGGR))
2193 ath9k_ps_wakeup(sc);
2194 ret = ath_tx_aggr_start(sc, sta, tid, ssn);
2196 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2197 ath9k_ps_restore(sc);
2199 case IEEE80211_AMPDU_TX_STOP:
2200 ath9k_ps_wakeup(sc);
2201 ath_tx_aggr_stop(sc, sta, tid);
2202 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2203 ath9k_ps_restore(sc);
2205 case IEEE80211_AMPDU_TX_OPERATIONAL:
2206 ath9k_ps_wakeup(sc);
2207 ath_tx_aggr_resume(sc, sta, tid);
2208 ath9k_ps_restore(sc);
2211 ath_err(ath9k_hw_common(sc->sc_ah), "Unknown AMPDU action\n");
2219 static int ath9k_get_survey(struct ieee80211_hw *hw, int idx,
2220 struct survey_info *survey)
2222 struct ath_softc *sc = hw->priv;
2223 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
2224 struct ieee80211_supported_band *sband;
2225 struct ieee80211_channel *chan;
2226 unsigned long flags;
2229 spin_lock_irqsave(&common->cc_lock, flags);
2231 ath_update_survey_stats(sc);
2233 sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
2234 if (sband && idx >= sband->n_channels) {
2235 idx -= sband->n_channels;
2240 sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];
2242 if (!sband || idx >= sband->n_channels) {
2243 spin_unlock_irqrestore(&common->cc_lock, flags);
2247 chan = &sband->channels[idx];
2248 pos = chan->hw_value;
2249 memcpy(survey, &sc->survey[pos], sizeof(*survey));
2250 survey->channel = chan;
2251 spin_unlock_irqrestore(&common->cc_lock, flags);
2256 static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
2258 struct ath_softc *sc = hw->priv;
2259 struct ath_hw *ah = sc->sc_ah;
2261 mutex_lock(&sc->mutex);
2262 ah->coverage_class = coverage_class;
2264 ath9k_ps_wakeup(sc);
2265 ath9k_hw_init_global_settings(ah);
2266 ath9k_ps_restore(sc);
2268 mutex_unlock(&sc->mutex);
2271 static void ath9k_flush(struct ieee80211_hw *hw, bool drop)
2273 struct ath_softc *sc = hw->priv;
2274 struct ath_hw *ah = sc->sc_ah;
2275 struct ath_common *common = ath9k_hw_common(ah);
2276 int timeout = 200; /* ms */
2280 mutex_lock(&sc->mutex);
2281 cancel_delayed_work_sync(&sc->tx_complete_work);
2283 if (sc->sc_flags & SC_OP_INVALID) {
2284 ath_dbg(common, ATH_DBG_ANY, "Device not present\n");
2285 mutex_unlock(&sc->mutex);
2292 for (j = 0; j < timeout; j++) {
2296 usleep_range(1000, 2000);
2298 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
2299 if (!ATH_TXQ_SETUP(sc, i))
2302 npend = ath9k_has_pending_frames(sc, &sc->tx.txq[i]);
2312 ath9k_ps_wakeup(sc);
2313 spin_lock_bh(&sc->sc_pcu_lock);
2314 drain_txq = ath_drain_all_txq(sc, false);
2315 spin_unlock_bh(&sc->sc_pcu_lock);
2317 ath_reset(sc, false);
2318 ath9k_ps_restore(sc);
2319 ieee80211_wake_queues(hw);
2322 ieee80211_queue_delayed_work(hw, &sc->tx_complete_work, 0);
2323 mutex_unlock(&sc->mutex);
2326 static bool ath9k_tx_frames_pending(struct ieee80211_hw *hw)
2328 struct ath_softc *sc = hw->priv;
2331 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
2332 if (!ATH_TXQ_SETUP(sc, i))
2335 if (ath9k_has_pending_frames(sc, &sc->tx.txq[i]))
2341 int ath9k_tx_last_beacon(struct ieee80211_hw *hw)
2343 struct ath_softc *sc = hw->priv;
2344 struct ath_hw *ah = sc->sc_ah;
2345 struct ieee80211_vif *vif;
2346 struct ath_vif *avp;
2348 struct ath_tx_status ts;
2351 vif = sc->beacon.bslot[0];
2355 avp = (void *)vif->drv_priv;
2356 if (!avp->is_bslot_active)
2359 if (!sc->beacon.tx_processed) {
2360 tasklet_disable(&sc->bcon_tasklet);
2363 if (!bf || !bf->bf_mpdu)
2366 status = ath9k_hw_txprocdesc(ah, bf->bf_desc, &ts);
2367 if (status == -EINPROGRESS)
2370 sc->beacon.tx_processed = true;
2371 sc->beacon.tx_last = !(ts.ts_status & ATH9K_TXERR_MASK);
2374 tasklet_enable(&sc->bcon_tasklet);
2377 return sc->beacon.tx_last;
2380 struct ieee80211_ops ath9k_ops = {
2382 .start = ath9k_start,
2384 .add_interface = ath9k_add_interface,
2385 .change_interface = ath9k_change_interface,
2386 .remove_interface = ath9k_remove_interface,
2387 .config = ath9k_config,
2388 .configure_filter = ath9k_configure_filter,
2389 .sta_add = ath9k_sta_add,
2390 .sta_remove = ath9k_sta_remove,
2391 .sta_notify = ath9k_sta_notify,
2392 .conf_tx = ath9k_conf_tx,
2393 .bss_info_changed = ath9k_bss_info_changed,
2394 .set_key = ath9k_set_key,
2395 .get_tsf = ath9k_get_tsf,
2396 .set_tsf = ath9k_set_tsf,
2397 .reset_tsf = ath9k_reset_tsf,
2398 .ampdu_action = ath9k_ampdu_action,
2399 .get_survey = ath9k_get_survey,
2400 .rfkill_poll = ath9k_rfkill_poll_state,
2401 .set_coverage_class = ath9k_set_coverage_class,
2402 .flush = ath9k_flush,
2403 .tx_frames_pending = ath9k_tx_frames_pending,
2404 .tx_last_beacon = ath9k_tx_last_beacon,