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))
66 spin_unlock_bh(&txq->axq_lock);
70 static bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode)
75 spin_lock_irqsave(&sc->sc_pm_lock, flags);
76 ret = ath9k_hw_setpower(sc->sc_ah, mode);
77 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
82 void ath9k_ps_wakeup(struct ath_softc *sc)
84 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
86 enum ath9k_power_mode power_mode;
88 spin_lock_irqsave(&sc->sc_pm_lock, flags);
89 if (++sc->ps_usecount != 1)
92 power_mode = sc->sc_ah->power_mode;
93 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
96 * While the hardware is asleep, the cycle counters contain no
97 * useful data. Better clear them now so that they don't mess up
98 * survey data results.
100 if (power_mode != ATH9K_PM_AWAKE) {
101 spin_lock(&common->cc_lock);
102 ath_hw_cycle_counters_update(common);
103 memset(&common->cc_survey, 0, sizeof(common->cc_survey));
104 spin_unlock(&common->cc_lock);
108 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
111 void ath9k_ps_restore(struct ath_softc *sc)
113 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
116 spin_lock_irqsave(&sc->sc_pm_lock, flags);
117 if (--sc->ps_usecount != 0)
120 spin_lock(&common->cc_lock);
121 ath_hw_cycle_counters_update(common);
122 spin_unlock(&common->cc_lock);
125 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP);
126 else if (sc->ps_enabled &&
127 !(sc->ps_flags & (PS_WAIT_FOR_BEACON |
129 PS_WAIT_FOR_PSPOLL_DATA |
130 PS_WAIT_FOR_TX_ACK)))
131 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP);
134 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
137 void ath_start_ani(struct ath_common *common)
139 struct ath_hw *ah = common->ah;
140 unsigned long timestamp = jiffies_to_msecs(jiffies);
141 struct ath_softc *sc = (struct ath_softc *) common->priv;
143 if (!(sc->sc_flags & SC_OP_ANI_RUN))
146 if (sc->sc_flags & SC_OP_OFFCHANNEL)
149 common->ani.longcal_timer = timestamp;
150 common->ani.shortcal_timer = timestamp;
151 common->ani.checkani_timer = timestamp;
153 mod_timer(&common->ani.timer,
155 msecs_to_jiffies((u32)ah->config.ani_poll_interval));
158 static void ath_update_survey_nf(struct ath_softc *sc, int channel)
160 struct ath_hw *ah = sc->sc_ah;
161 struct ath9k_channel *chan = &ah->channels[channel];
162 struct survey_info *survey = &sc->survey[channel];
164 if (chan->noisefloor) {
165 survey->filled |= SURVEY_INFO_NOISE_DBM;
166 survey->noise = chan->noisefloor;
171 * Updates the survey statistics and returns the busy time since last
172 * update in %, if the measurement duration was long enough for the
173 * result to be useful, -1 otherwise.
175 static int ath_update_survey_stats(struct ath_softc *sc)
177 struct ath_hw *ah = sc->sc_ah;
178 struct ath_common *common = ath9k_hw_common(ah);
179 int pos = ah->curchan - &ah->channels[0];
180 struct survey_info *survey = &sc->survey[pos];
181 struct ath_cycle_counters *cc = &common->cc_survey;
182 unsigned int div = common->clockrate * 1000;
188 if (ah->power_mode == ATH9K_PM_AWAKE)
189 ath_hw_cycle_counters_update(common);
191 if (cc->cycles > 0) {
192 survey->filled |= SURVEY_INFO_CHANNEL_TIME |
193 SURVEY_INFO_CHANNEL_TIME_BUSY |
194 SURVEY_INFO_CHANNEL_TIME_RX |
195 SURVEY_INFO_CHANNEL_TIME_TX;
196 survey->channel_time += cc->cycles / div;
197 survey->channel_time_busy += cc->rx_busy / div;
198 survey->channel_time_rx += cc->rx_frame / div;
199 survey->channel_time_tx += cc->tx_frame / div;
202 if (cc->cycles < div)
206 ret = cc->rx_busy * 100 / cc->cycles;
208 memset(cc, 0, sizeof(*cc));
210 ath_update_survey_nf(sc, pos);
216 * Set/change channels. If the channel is really being changed, it's done
217 * by reseting the chip. To accomplish this we must first cleanup any pending
218 * DMA, then restart stuff.
220 static int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
221 struct ath9k_channel *hchan)
223 struct ath_hw *ah = sc->sc_ah;
224 struct ath_common *common = ath9k_hw_common(ah);
225 struct ieee80211_conf *conf = &common->hw->conf;
226 bool fastcc = true, stopped;
227 struct ieee80211_channel *channel = hw->conf.channel;
228 struct ath9k_hw_cal_data *caldata = NULL;
231 if (sc->sc_flags & SC_OP_INVALID)
234 sc->hw_busy_count = 0;
236 del_timer_sync(&common->ani.timer);
237 cancel_work_sync(&sc->paprd_work);
238 cancel_work_sync(&sc->hw_check_work);
239 cancel_delayed_work_sync(&sc->tx_complete_work);
240 cancel_delayed_work_sync(&sc->hw_pll_work);
244 spin_lock_bh(&sc->sc_pcu_lock);
247 * This is only performed if the channel settings have
250 * To switch channels clear any pending DMA operations;
251 * wait long enough for the RX fifo to drain, reset the
252 * hardware at the new frequency, and then re-enable
253 * the relevant bits of the h/w.
255 ath9k_hw_disable_interrupts(ah);
256 stopped = ath_drain_all_txq(sc, false);
258 if (!ath_stoprecv(sc))
261 if (!ath9k_hw_check_alive(ah))
264 /* XXX: do not flush receive queue here. We don't want
265 * to flush data frames already in queue because of
266 * changing channel. */
268 if (!stopped || !(sc->sc_flags & SC_OP_OFFCHANNEL))
271 if (!(sc->sc_flags & SC_OP_OFFCHANNEL))
272 caldata = &sc->caldata;
274 ath_dbg(common, ATH_DBG_CONFIG,
275 "(%u MHz) -> (%u MHz), conf_is_ht40: %d fastcc: %d\n",
276 sc->sc_ah->curchan->channel,
277 channel->center_freq, conf_is_ht40(conf),
280 r = ath9k_hw_reset(ah, hchan, caldata, fastcc);
283 "Unable to reset channel (%u MHz), reset status %d\n",
284 channel->center_freq, r);
288 if (ath_startrecv(sc) != 0) {
289 ath_err(common, "Unable to restart recv logic\n");
294 ath9k_cmn_update_txpow(ah, sc->curtxpow,
295 sc->config.txpowlimit, &sc->curtxpow);
296 ath9k_hw_set_interrupts(ah, ah->imask);
298 if (!(sc->sc_flags & (SC_OP_OFFCHANNEL))) {
299 if (sc->sc_flags & SC_OP_BEACONS)
301 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
302 ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/2);
303 if (!common->disable_ani)
304 ath_start_ani(common);
308 ieee80211_wake_queues(hw);
310 spin_unlock_bh(&sc->sc_pcu_lock);
312 ath9k_ps_restore(sc);
316 static void ath_paprd_activate(struct ath_softc *sc)
318 struct ath_hw *ah = sc->sc_ah;
319 struct ath9k_hw_cal_data *caldata = ah->caldata;
320 struct ath_common *common = ath9k_hw_common(ah);
323 if (!caldata || !caldata->paprd_done)
327 ar9003_paprd_enable(ah, false);
328 for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
329 if (!(common->tx_chainmask & BIT(chain)))
332 ar9003_paprd_populate_single_table(ah, caldata, chain);
335 ar9003_paprd_enable(ah, true);
336 ath9k_ps_restore(sc);
339 static bool ath_paprd_send_frame(struct ath_softc *sc, struct sk_buff *skb, int chain)
341 struct ieee80211_hw *hw = sc->hw;
342 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
343 struct ath_hw *ah = sc->sc_ah;
344 struct ath_common *common = ath9k_hw_common(ah);
345 struct ath_tx_control txctl;
348 memset(&txctl, 0, sizeof(txctl));
349 txctl.txq = sc->tx.txq_map[WME_AC_BE];
351 memset(tx_info, 0, sizeof(*tx_info));
352 tx_info->band = hw->conf.channel->band;
353 tx_info->flags |= IEEE80211_TX_CTL_NO_ACK;
354 tx_info->control.rates[0].idx = 0;
355 tx_info->control.rates[0].count = 1;
356 tx_info->control.rates[0].flags = IEEE80211_TX_RC_MCS;
357 tx_info->control.rates[1].idx = -1;
359 init_completion(&sc->paprd_complete);
360 txctl.paprd = BIT(chain);
362 if (ath_tx_start(hw, skb, &txctl) != 0) {
363 ath_dbg(common, ATH_DBG_CALIBRATE, "PAPRD TX failed\n");
364 dev_kfree_skb_any(skb);
368 time_left = wait_for_completion_timeout(&sc->paprd_complete,
369 msecs_to_jiffies(ATH_PAPRD_TIMEOUT));
372 ath_dbg(common, ATH_DBG_CALIBRATE,
373 "Timeout waiting for paprd training on TX chain %d\n",
379 void ath_paprd_calibrate(struct work_struct *work)
381 struct ath_softc *sc = container_of(work, struct ath_softc, paprd_work);
382 struct ieee80211_hw *hw = sc->hw;
383 struct ath_hw *ah = sc->sc_ah;
384 struct ieee80211_hdr *hdr;
385 struct sk_buff *skb = NULL;
386 struct ath9k_hw_cal_data *caldata = ah->caldata;
387 struct ath_common *common = ath9k_hw_common(ah);
398 if (ar9003_paprd_init_table(ah) < 0)
401 skb = alloc_skb(len, GFP_KERNEL);
406 memset(skb->data, 0, len);
407 hdr = (struct ieee80211_hdr *)skb->data;
408 ftype = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC;
409 hdr->frame_control = cpu_to_le16(ftype);
410 hdr->duration_id = cpu_to_le16(10);
411 memcpy(hdr->addr1, hw->wiphy->perm_addr, ETH_ALEN);
412 memcpy(hdr->addr2, hw->wiphy->perm_addr, ETH_ALEN);
413 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)) {
435 ath_dbg(common, ATH_DBG_CALIBRATE,
436 "PAPRD not yet done on chain %d\n", chain);
440 if (ar9003_paprd_create_curve(ah, caldata, chain)) {
441 ath_dbg(common, ATH_DBG_CALIBRATE,
442 "PAPRD create curve failed on chain %d\n",
452 caldata->paprd_done = true;
453 ath_paprd_activate(sc);
457 ath9k_ps_restore(sc);
461 * This routine performs the periodic noise floor calibration function
462 * that is used to adjust and optimize the chip performance. This
463 * takes environmental changes (location, temperature) into account.
464 * When the task is complete, it reschedules itself depending on the
465 * appropriate interval that was calculated.
467 void ath_ani_calibrate(unsigned long data)
469 struct ath_softc *sc = (struct ath_softc *)data;
470 struct ath_hw *ah = sc->sc_ah;
471 struct ath_common *common = ath9k_hw_common(ah);
472 bool longcal = false;
473 bool shortcal = false;
474 bool aniflag = false;
475 unsigned int timestamp = jiffies_to_msecs(jiffies);
476 u32 cal_interval, short_cal_interval, long_cal_interval;
479 if (ah->caldata && ah->caldata->nfcal_interference)
480 long_cal_interval = ATH_LONG_CALINTERVAL_INT;
482 long_cal_interval = ATH_LONG_CALINTERVAL;
484 short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ?
485 ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL;
487 /* Only calibrate if awake */
488 if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE)
493 /* Long calibration runs independently of short calibration. */
494 if ((timestamp - common->ani.longcal_timer) >= long_cal_interval) {
496 ath_dbg(common, ATH_DBG_ANI, "longcal @%lu\n", jiffies);
497 common->ani.longcal_timer = timestamp;
500 /* Short calibration applies only while caldone is false */
501 if (!common->ani.caldone) {
502 if ((timestamp - common->ani.shortcal_timer) >= short_cal_interval) {
504 ath_dbg(common, ATH_DBG_ANI,
505 "shortcal @%lu\n", jiffies);
506 common->ani.shortcal_timer = timestamp;
507 common->ani.resetcal_timer = timestamp;
510 if ((timestamp - common->ani.resetcal_timer) >=
511 ATH_RESTART_CALINTERVAL) {
512 common->ani.caldone = ath9k_hw_reset_calvalid(ah);
513 if (common->ani.caldone)
514 common->ani.resetcal_timer = timestamp;
518 /* Verify whether we must check ANI */
519 if ((timestamp - common->ani.checkani_timer) >=
520 ah->config.ani_poll_interval) {
522 common->ani.checkani_timer = timestamp;
525 /* Call ANI routine if necessary */
527 spin_lock_irqsave(&common->cc_lock, flags);
528 ath9k_hw_ani_monitor(ah, ah->curchan);
529 ath_update_survey_stats(sc);
530 spin_unlock_irqrestore(&common->cc_lock, flags);
533 /* Perform calibration if necessary */
534 if (longcal || shortcal) {
535 common->ani.caldone =
536 ath9k_hw_calibrate(ah, ah->curchan,
537 common->rx_chainmask, longcal);
540 ath9k_ps_restore(sc);
544 * Set timer interval based on previous results.
545 * The interval must be the shortest necessary to satisfy ANI,
546 * short calibration and long calibration.
548 cal_interval = ATH_LONG_CALINTERVAL;
549 if (sc->sc_ah->config.enable_ani)
550 cal_interval = min(cal_interval,
551 (u32)ah->config.ani_poll_interval);
552 if (!common->ani.caldone)
553 cal_interval = min(cal_interval, (u32)short_cal_interval);
555 mod_timer(&common->ani.timer, jiffies + msecs_to_jiffies(cal_interval));
556 if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) && ah->caldata) {
557 if (!ah->caldata->paprd_done)
558 ieee80211_queue_work(sc->hw, &sc->paprd_work);
559 else if (!ah->paprd_table_write_done)
560 ath_paprd_activate(sc);
564 static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta)
567 struct ath_hw *ah = sc->sc_ah;
568 an = (struct ath_node *)sta->drv_priv;
570 #ifdef CONFIG_ATH9K_DEBUGFS
571 spin_lock(&sc->nodes_lock);
572 list_add(&an->list, &sc->nodes);
573 spin_unlock(&sc->nodes_lock);
576 if ((ah->caps.hw_caps) & ATH9K_HW_CAP_APM)
577 sc->sc_flags |= SC_OP_ENABLE_APM;
579 if (sc->sc_flags & SC_OP_TXAGGR) {
580 ath_tx_node_init(sc, an);
581 an->maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
582 sta->ht_cap.ampdu_factor);
583 an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density);
587 static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
589 struct ath_node *an = (struct ath_node *)sta->drv_priv;
591 #ifdef CONFIG_ATH9K_DEBUGFS
592 spin_lock(&sc->nodes_lock);
594 spin_unlock(&sc->nodes_lock);
598 if (sc->sc_flags & SC_OP_TXAGGR)
599 ath_tx_node_cleanup(sc, an);
602 void ath_hw_check(struct work_struct *work)
604 struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
605 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
610 if (ath9k_hw_check_alive(sc->sc_ah))
613 spin_lock_irqsave(&common->cc_lock, flags);
614 busy = ath_update_survey_stats(sc);
615 spin_unlock_irqrestore(&common->cc_lock, flags);
617 ath_dbg(common, ATH_DBG_RESET, "Possible baseband hang, "
618 "busy=%d (try %d)\n", busy, sc->hw_busy_count + 1);
620 if (++sc->hw_busy_count >= 3) {
621 spin_lock_bh(&sc->sc_pcu_lock);
623 spin_unlock_bh(&sc->sc_pcu_lock);
625 } else if (busy >= 0)
626 sc->hw_busy_count = 0;
629 ath9k_ps_restore(sc);
632 static void ath_hw_pll_rx_hang_check(struct ath_softc *sc, u32 pll_sqsum)
635 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
637 if (pll_sqsum >= 0x40000) {
640 /* Rx is hung for more than 500ms. Reset it */
641 ath_dbg(common, ATH_DBG_RESET,
642 "Possible RX hang, resetting");
643 spin_lock_bh(&sc->sc_pcu_lock);
645 spin_unlock_bh(&sc->sc_pcu_lock);
652 void ath_hw_pll_work(struct work_struct *work)
654 struct ath_softc *sc = container_of(work, struct ath_softc,
658 if (AR_SREV_9485(sc->sc_ah)) {
661 pll_sqsum = ar9003_get_pll_sqsum_dvc(sc->sc_ah);
662 ath9k_ps_restore(sc);
664 ath_hw_pll_rx_hang_check(sc, pll_sqsum);
666 ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/5);
671 void ath9k_tasklet(unsigned long data)
673 struct ath_softc *sc = (struct ath_softc *)data;
674 struct ath_hw *ah = sc->sc_ah;
675 struct ath_common *common = ath9k_hw_common(ah);
677 u32 status = sc->intrstatus;
680 if ((status & ATH9K_INT_FATAL) ||
681 (status & ATH9K_INT_BB_WATCHDOG)) {
682 spin_lock(&sc->sc_pcu_lock);
684 spin_unlock(&sc->sc_pcu_lock);
689 spin_lock(&sc->sc_pcu_lock);
692 * Only run the baseband hang check if beacons stop working in AP or
693 * IBSS mode, because it has a high false positive rate. For station
694 * mode it should not be necessary, since the upper layers will detect
695 * this through a beacon miss automatically and the following channel
696 * change will trigger a hardware reset anyway
698 if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0 &&
699 !ath9k_hw_check_alive(ah))
700 ieee80211_queue_work(sc->hw, &sc->hw_check_work);
702 if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
704 * TSF sync does not look correct; remain awake to sync with
707 ath_dbg(common, ATH_DBG_PS,
708 "TSFOOR - Sync with next Beacon\n");
709 sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC |
713 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
714 rxmask = (ATH9K_INT_RXHP | ATH9K_INT_RXLP | ATH9K_INT_RXEOL |
717 rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
719 if (status & rxmask) {
720 /* Check for high priority Rx first */
721 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
722 (status & ATH9K_INT_RXHP))
723 ath_rx_tasklet(sc, 0, true);
725 ath_rx_tasklet(sc, 0, false);
728 if (status & ATH9K_INT_TX) {
729 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
730 ath_tx_edma_tasklet(sc);
735 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
736 if (status & ATH9K_INT_GENTIMER)
737 ath_gen_timer_isr(sc->sc_ah);
739 /* re-enable hardware interrupt */
740 ath9k_hw_enable_interrupts(ah);
742 spin_unlock(&sc->sc_pcu_lock);
743 ath9k_ps_restore(sc);
746 irqreturn_t ath_isr(int irq, void *dev)
748 #define SCHED_INTR ( \
750 ATH9K_INT_BB_WATCHDOG | \
762 struct ath_softc *sc = dev;
763 struct ath_hw *ah = sc->sc_ah;
764 struct ath_common *common = ath9k_hw_common(ah);
765 enum ath9k_int status;
769 * The hardware is not ready/present, don't
770 * touch anything. Note this can happen early
771 * on if the IRQ is shared.
773 if (sc->sc_flags & SC_OP_INVALID)
777 /* shared irq, not for us */
779 if (!ath9k_hw_intrpend(ah))
783 * Figure out the reason(s) for the interrupt. Note
784 * that the hal returns a pseudo-ISR that may include
785 * bits we haven't explicitly enabled so we mask the
786 * value to insure we only process bits we requested.
788 ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */
789 status &= ah->imask; /* discard unasked-for bits */
792 * If there are no status bits set, then this interrupt was not
793 * for me (should have been caught above).
798 /* Cache the status */
799 sc->intrstatus = status;
801 if (status & SCHED_INTR)
805 * If a FATAL or RXORN interrupt is received, we have to reset the
808 if ((status & ATH9K_INT_FATAL) || ((status & ATH9K_INT_RXORN) &&
809 !(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)))
812 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
813 (status & ATH9K_INT_BB_WATCHDOG)) {
815 spin_lock(&common->cc_lock);
816 ath_hw_cycle_counters_update(common);
817 ar9003_hw_bb_watchdog_dbg_info(ah);
818 spin_unlock(&common->cc_lock);
823 if (status & ATH9K_INT_SWBA)
824 tasklet_schedule(&sc->bcon_tasklet);
826 if (status & ATH9K_INT_TXURN)
827 ath9k_hw_updatetxtriglevel(ah, true);
829 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
830 if (status & ATH9K_INT_RXEOL) {
831 ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
832 ath9k_hw_set_interrupts(ah, ah->imask);
836 if (status & ATH9K_INT_MIB) {
838 * Disable interrupts until we service the MIB
839 * interrupt; otherwise it will continue to
842 ath9k_hw_disable_interrupts(ah);
844 * Let the hal handle the event. We assume
845 * it will clear whatever condition caused
848 spin_lock(&common->cc_lock);
849 ath9k_hw_proc_mib_event(ah);
850 spin_unlock(&common->cc_lock);
851 ath9k_hw_enable_interrupts(ah);
854 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
855 if (status & ATH9K_INT_TIM_TIMER) {
856 if (ATH_DBG_WARN_ON_ONCE(sc->ps_idle))
858 /* Clear RxAbort bit so that we can
860 ath9k_setpower(sc, ATH9K_PM_AWAKE);
861 ath9k_hw_setrxabort(sc->sc_ah, 0);
862 sc->ps_flags |= PS_WAIT_FOR_BEACON;
867 ath_debug_stat_interrupt(sc, status);
870 /* turn off every interrupt */
871 ath9k_hw_disable_interrupts(ah);
872 tasklet_schedule(&sc->intr_tq);
880 static void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
882 struct ath_hw *ah = sc->sc_ah;
883 struct ath_common *common = ath9k_hw_common(ah);
884 struct ieee80211_channel *channel = hw->conf.channel;
888 spin_lock_bh(&sc->sc_pcu_lock);
890 ath9k_hw_configpcipowersave(ah, 0, 0);
893 ah->curchan = ath9k_cmn_get_curchannel(sc->hw, ah);
895 r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
898 "Unable to reset channel (%u MHz), reset status %d\n",
899 channel->center_freq, r);
902 ath9k_cmn_update_txpow(ah, sc->curtxpow,
903 sc->config.txpowlimit, &sc->curtxpow);
904 if (ath_startrecv(sc) != 0) {
905 ath_err(common, "Unable to restart recv logic\n");
908 if (sc->sc_flags & SC_OP_BEACONS)
909 ath_set_beacon(sc); /* restart beacons */
911 /* Re-Enable interrupts */
912 ath9k_hw_set_interrupts(ah, ah->imask);
915 ath9k_hw_cfg_output(ah, ah->led_pin,
916 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
917 ath9k_hw_set_gpio(ah, ah->led_pin, 0);
919 ieee80211_wake_queues(hw);
920 ieee80211_queue_delayed_work(hw, &sc->hw_pll_work, HZ/2);
923 spin_unlock_bh(&sc->sc_pcu_lock);
925 ath9k_ps_restore(sc);
928 void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw)
930 struct ath_hw *ah = sc->sc_ah;
931 struct ieee80211_channel *channel = hw->conf.channel;
935 cancel_delayed_work_sync(&sc->hw_pll_work);
937 spin_lock_bh(&sc->sc_pcu_lock);
939 ieee80211_stop_queues(hw);
942 * Keep the LED on when the radio is disabled
943 * during idle unassociated state.
946 ath9k_hw_set_gpio(ah, ah->led_pin, 1);
947 ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
950 /* Disable interrupts */
951 ath9k_hw_disable_interrupts(ah);
953 ath_drain_all_txq(sc, false); /* clear pending tx frames */
955 ath_stoprecv(sc); /* turn off frame recv */
956 ath_flushrecv(sc); /* flush recv queue */
959 ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
961 r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
963 ath_err(ath9k_hw_common(sc->sc_ah),
964 "Unable to reset channel (%u MHz), reset status %d\n",
965 channel->center_freq, r);
968 ath9k_hw_phy_disable(ah);
970 ath9k_hw_configpcipowersave(ah, 1, 1);
972 spin_unlock_bh(&sc->sc_pcu_lock);
973 ath9k_ps_restore(sc);
976 int ath_reset(struct ath_softc *sc, bool retry_tx)
978 struct ath_hw *ah = sc->sc_ah;
979 struct ath_common *common = ath9k_hw_common(ah);
980 struct ieee80211_hw *hw = sc->hw;
983 sc->hw_busy_count = 0;
987 del_timer_sync(&common->ani.timer);
991 ieee80211_stop_queues(hw);
993 ath9k_hw_disable_interrupts(ah);
994 ath_drain_all_txq(sc, retry_tx);
999 r = ath9k_hw_reset(ah, sc->sc_ah->curchan, ah->caldata, false);
1002 "Unable to reset hardware; reset status %d\n", r);
1004 if (ath_startrecv(sc) != 0)
1005 ath_err(common, "Unable to start recv logic\n");
1008 * We may be doing a reset in response to a request
1009 * that changes the channel so update any state that
1010 * might change as a result.
1012 ath9k_cmn_update_txpow(ah, sc->curtxpow,
1013 sc->config.txpowlimit, &sc->curtxpow);
1015 if ((sc->sc_flags & SC_OP_BEACONS) || !(sc->sc_flags & (SC_OP_OFFCHANNEL)))
1016 ath_set_beacon(sc); /* restart beacons */
1018 ath9k_hw_set_interrupts(ah, ah->imask);
1022 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
1023 if (ATH_TXQ_SETUP(sc, i)) {
1024 spin_lock_bh(&sc->tx.txq[i].axq_lock);
1025 ath_txq_schedule(sc, &sc->tx.txq[i]);
1026 spin_unlock_bh(&sc->tx.txq[i].axq_lock);
1031 ieee80211_wake_queues(hw);
1034 if (!common->disable_ani)
1035 ath_start_ani(common);
1037 ath9k_ps_restore(sc);
1042 /**********************/
1043 /* mac80211 callbacks */
1044 /**********************/
1046 static int ath9k_start(struct ieee80211_hw *hw)
1048 struct ath_softc *sc = hw->priv;
1049 struct ath_hw *ah = sc->sc_ah;
1050 struct ath_common *common = ath9k_hw_common(ah);
1051 struct ieee80211_channel *curchan = hw->conf.channel;
1052 struct ath9k_channel *init_channel;
1055 ath_dbg(common, ATH_DBG_CONFIG,
1056 "Starting driver with initial channel: %d MHz\n",
1057 curchan->center_freq);
1059 ath9k_ps_wakeup(sc);
1061 mutex_lock(&sc->mutex);
1063 /* setup initial channel */
1064 sc->chan_idx = curchan->hw_value;
1066 init_channel = ath9k_cmn_get_curchannel(hw, ah);
1068 /* Reset SERDES registers */
1069 ath9k_hw_configpcipowersave(ah, 0, 0);
1072 * The basic interface to setting the hardware in a good
1073 * state is ``reset''. On return the hardware is known to
1074 * be powered up and with interrupts disabled. This must
1075 * be followed by initialization of the appropriate bits
1076 * and then setup of the interrupt mask.
1078 spin_lock_bh(&sc->sc_pcu_lock);
1079 r = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
1082 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
1083 r, curchan->center_freq);
1084 spin_unlock_bh(&sc->sc_pcu_lock);
1089 * This is needed only to setup initial state
1090 * but it's best done after a reset.
1092 ath9k_cmn_update_txpow(ah, sc->curtxpow,
1093 sc->config.txpowlimit, &sc->curtxpow);
1096 * Setup the hardware after reset:
1097 * The receive engine is set going.
1098 * Frame transmit is handled entirely
1099 * in the frame output path; there's nothing to do
1100 * here except setup the interrupt mask.
1102 if (ath_startrecv(sc) != 0) {
1103 ath_err(common, "Unable to start recv logic\n");
1105 spin_unlock_bh(&sc->sc_pcu_lock);
1108 spin_unlock_bh(&sc->sc_pcu_lock);
1110 /* Setup our intr mask. */
1111 ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL |
1112 ATH9K_INT_RXORN | ATH9K_INT_FATAL |
1115 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
1116 ah->imask |= ATH9K_INT_RXHP |
1118 ATH9K_INT_BB_WATCHDOG;
1120 ah->imask |= ATH9K_INT_RX;
1122 ah->imask |= ATH9K_INT_GTT;
1124 if (ah->caps.hw_caps & ATH9K_HW_CAP_HT)
1125 ah->imask |= ATH9K_INT_CST;
1127 sc->sc_flags &= ~SC_OP_INVALID;
1128 sc->sc_ah->is_monitoring = false;
1130 /* Disable BMISS interrupt when we're not associated */
1131 ah->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
1132 ath9k_hw_set_interrupts(ah, ah->imask);
1134 ieee80211_wake_queues(hw);
1136 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
1138 if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) &&
1139 !ah->btcoex_hw.enabled) {
1140 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
1141 AR_STOMP_LOW_WLAN_WGHT);
1142 ath9k_hw_btcoex_enable(ah);
1144 if (common->bus_ops->bt_coex_prep)
1145 common->bus_ops->bt_coex_prep(common);
1146 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
1147 ath9k_btcoex_timer_resume(sc);
1150 if (ah->caps.pcie_lcr_extsync_en && common->bus_ops->extn_synch_en)
1151 common->bus_ops->extn_synch_en(common);
1154 mutex_unlock(&sc->mutex);
1156 ath9k_ps_restore(sc);
1161 static void ath9k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
1163 struct ath_softc *sc = hw->priv;
1164 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1165 struct ath_tx_control txctl;
1166 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1168 if (sc->ps_enabled) {
1170 * mac80211 does not set PM field for normal data frames, so we
1171 * need to update that based on the current PS mode.
1173 if (ieee80211_is_data(hdr->frame_control) &&
1174 !ieee80211_is_nullfunc(hdr->frame_control) &&
1175 !ieee80211_has_pm(hdr->frame_control)) {
1176 ath_dbg(common, ATH_DBG_PS,
1177 "Add PM=1 for a TX frame while in PS mode\n");
1178 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1182 if (unlikely(sc->sc_ah->power_mode != ATH9K_PM_AWAKE)) {
1184 * We are using PS-Poll and mac80211 can request TX while in
1185 * power save mode. Need to wake up hardware for the TX to be
1186 * completed and if needed, also for RX of buffered frames.
1188 ath9k_ps_wakeup(sc);
1189 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
1190 ath9k_hw_setrxabort(sc->sc_ah, 0);
1191 if (ieee80211_is_pspoll(hdr->frame_control)) {
1192 ath_dbg(common, ATH_DBG_PS,
1193 "Sending PS-Poll to pick a buffered frame\n");
1194 sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA;
1196 ath_dbg(common, ATH_DBG_PS,
1197 "Wake up to complete TX\n");
1198 sc->ps_flags |= PS_WAIT_FOR_TX_ACK;
1201 * The actual restore operation will happen only after
1202 * the sc_flags bit is cleared. We are just dropping
1203 * the ps_usecount here.
1205 ath9k_ps_restore(sc);
1208 memset(&txctl, 0, sizeof(struct ath_tx_control));
1209 txctl.txq = sc->tx.txq_map[skb_get_queue_mapping(skb)];
1211 ath_dbg(common, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb);
1213 if (ath_tx_start(hw, skb, &txctl) != 0) {
1214 ath_dbg(common, ATH_DBG_XMIT, "TX failed\n");
1220 dev_kfree_skb_any(skb);
1223 static void ath9k_stop(struct ieee80211_hw *hw)
1225 struct ath_softc *sc = hw->priv;
1226 struct ath_hw *ah = sc->sc_ah;
1227 struct ath_common *common = ath9k_hw_common(ah);
1229 mutex_lock(&sc->mutex);
1231 cancel_delayed_work_sync(&sc->tx_complete_work);
1232 cancel_delayed_work_sync(&sc->hw_pll_work);
1233 cancel_work_sync(&sc->paprd_work);
1234 cancel_work_sync(&sc->hw_check_work);
1236 if (sc->sc_flags & SC_OP_INVALID) {
1237 ath_dbg(common, ATH_DBG_ANY, "Device not present\n");
1238 mutex_unlock(&sc->mutex);
1242 /* Ensure HW is awake when we try to shut it down. */
1243 ath9k_ps_wakeup(sc);
1245 if (ah->btcoex_hw.enabled) {
1246 ath9k_hw_btcoex_disable(ah);
1247 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
1248 ath9k_btcoex_timer_pause(sc);
1251 spin_lock_bh(&sc->sc_pcu_lock);
1253 /* prevent tasklets to enable interrupts once we disable them */
1254 ah->imask &= ~ATH9K_INT_GLOBAL;
1256 /* make sure h/w will not generate any interrupt
1257 * before setting the invalid flag. */
1258 ath9k_hw_disable_interrupts(ah);
1260 if (!(sc->sc_flags & SC_OP_INVALID)) {
1261 ath_drain_all_txq(sc, false);
1263 ath9k_hw_phy_disable(ah);
1265 sc->rx.rxlink = NULL;
1268 dev_kfree_skb_any(sc->rx.frag);
1272 /* disable HAL and put h/w to sleep */
1273 ath9k_hw_disable(ah);
1275 spin_unlock_bh(&sc->sc_pcu_lock);
1277 /* we can now sync irq and kill any running tasklets, since we already
1278 * disabled interrupts and not holding a spin lock */
1279 synchronize_irq(sc->irq);
1280 tasklet_kill(&sc->intr_tq);
1281 tasklet_kill(&sc->bcon_tasklet);
1283 ath9k_ps_restore(sc);
1286 ath_radio_disable(sc, hw);
1288 sc->sc_flags |= SC_OP_INVALID;
1290 mutex_unlock(&sc->mutex);
1292 ath_dbg(common, ATH_DBG_CONFIG, "Driver halt\n");
1295 bool ath9k_uses_beacons(int type)
1298 case NL80211_IFTYPE_AP:
1299 case NL80211_IFTYPE_ADHOC:
1300 case NL80211_IFTYPE_MESH_POINT:
1307 static void ath9k_reclaim_beacon(struct ath_softc *sc,
1308 struct ieee80211_vif *vif)
1310 struct ath_vif *avp = (void *)vif->drv_priv;
1312 ath9k_set_beaconing_status(sc, false);
1313 ath_beacon_return(sc, avp);
1314 ath9k_set_beaconing_status(sc, true);
1315 sc->sc_flags &= ~SC_OP_BEACONS;
1318 static void ath9k_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
1320 struct ath9k_vif_iter_data *iter_data = data;
1323 if (iter_data->hw_macaddr)
1324 for (i = 0; i < ETH_ALEN; i++)
1325 iter_data->mask[i] &=
1326 ~(iter_data->hw_macaddr[i] ^ mac[i]);
1328 switch (vif->type) {
1329 case NL80211_IFTYPE_AP:
1332 case NL80211_IFTYPE_STATION:
1333 iter_data->nstations++;
1335 case NL80211_IFTYPE_ADHOC:
1336 iter_data->nadhocs++;
1338 case NL80211_IFTYPE_MESH_POINT:
1339 iter_data->nmeshes++;
1341 case NL80211_IFTYPE_WDS:
1345 iter_data->nothers++;
1350 /* Called with sc->mutex held. */
1351 void ath9k_calculate_iter_data(struct ieee80211_hw *hw,
1352 struct ieee80211_vif *vif,
1353 struct ath9k_vif_iter_data *iter_data)
1355 struct ath_softc *sc = hw->priv;
1356 struct ath_hw *ah = sc->sc_ah;
1357 struct ath_common *common = ath9k_hw_common(ah);
1360 * Use the hardware MAC address as reference, the hardware uses it
1361 * together with the BSSID mask when matching addresses.
1363 memset(iter_data, 0, sizeof(*iter_data));
1364 iter_data->hw_macaddr = common->macaddr;
1365 memset(&iter_data->mask, 0xff, ETH_ALEN);
1368 ath9k_vif_iter(iter_data, vif->addr, vif);
1370 /* Get list of all active MAC addresses */
1371 ieee80211_iterate_active_interfaces_atomic(sc->hw, ath9k_vif_iter,
1375 /* Called with sc->mutex held. */
1376 static void ath9k_calculate_summary_state(struct ieee80211_hw *hw,
1377 struct ieee80211_vif *vif)
1379 struct ath_softc *sc = hw->priv;
1380 struct ath_hw *ah = sc->sc_ah;
1381 struct ath_common *common = ath9k_hw_common(ah);
1382 struct ath9k_vif_iter_data iter_data;
1384 ath9k_calculate_iter_data(hw, vif, &iter_data);
1386 /* Set BSSID mask. */
1387 memcpy(common->bssidmask, iter_data.mask, ETH_ALEN);
1388 ath_hw_setbssidmask(common);
1390 /* Set op-mode & TSF */
1391 if (iter_data.naps > 0) {
1392 ath9k_hw_set_tsfadjust(ah, 1);
1393 sc->sc_flags |= SC_OP_TSF_RESET;
1394 ah->opmode = NL80211_IFTYPE_AP;
1396 ath9k_hw_set_tsfadjust(ah, 0);
1397 sc->sc_flags &= ~SC_OP_TSF_RESET;
1399 if (iter_data.nmeshes)
1400 ah->opmode = NL80211_IFTYPE_MESH_POINT;
1401 else if (iter_data.nwds)
1402 ah->opmode = NL80211_IFTYPE_AP;
1403 else if (iter_data.nadhocs)
1404 ah->opmode = NL80211_IFTYPE_ADHOC;
1406 ah->opmode = NL80211_IFTYPE_STATION;
1410 * Enable MIB interrupts when there are hardware phy counters.
1412 if ((iter_data.nstations + iter_data.nadhocs + iter_data.nmeshes) > 0) {
1413 if (ah->config.enable_ani)
1414 ah->imask |= ATH9K_INT_MIB;
1415 ah->imask |= ATH9K_INT_TSFOOR;
1417 ah->imask &= ~ATH9K_INT_MIB;
1418 ah->imask &= ~ATH9K_INT_TSFOOR;
1421 ath9k_hw_set_interrupts(ah, ah->imask);
1424 if (iter_data.naps > 0) {
1425 sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
1427 if (!common->disable_ani) {
1428 sc->sc_flags |= SC_OP_ANI_RUN;
1429 ath_start_ani(common);
1433 sc->sc_flags &= ~SC_OP_ANI_RUN;
1434 del_timer_sync(&common->ani.timer);
1438 /* Called with sc->mutex held, vif counts set up properly. */
1439 static void ath9k_do_vif_add_setup(struct ieee80211_hw *hw,
1440 struct ieee80211_vif *vif)
1442 struct ath_softc *sc = hw->priv;
1444 ath9k_calculate_summary_state(hw, vif);
1446 if (ath9k_uses_beacons(vif->type)) {
1448 /* This may fail because upper levels do not have beacons
1449 * properly configured yet. That's OK, we assume it
1450 * will be properly configured and then we will be notified
1451 * in the info_changed method and set up beacons properly
1454 ath9k_set_beaconing_status(sc, false);
1455 error = ath_beacon_alloc(sc, vif);
1457 ath_beacon_config(sc, vif);
1458 ath9k_set_beaconing_status(sc, true);
1463 static int ath9k_add_interface(struct ieee80211_hw *hw,
1464 struct ieee80211_vif *vif)
1466 struct ath_softc *sc = hw->priv;
1467 struct ath_hw *ah = sc->sc_ah;
1468 struct ath_common *common = ath9k_hw_common(ah);
1471 ath9k_ps_wakeup(sc);
1472 mutex_lock(&sc->mutex);
1474 switch (vif->type) {
1475 case NL80211_IFTYPE_STATION:
1476 case NL80211_IFTYPE_WDS:
1477 case NL80211_IFTYPE_ADHOC:
1478 case NL80211_IFTYPE_AP:
1479 case NL80211_IFTYPE_MESH_POINT:
1482 ath_err(common, "Interface type %d not yet supported\n",
1488 if (ath9k_uses_beacons(vif->type)) {
1489 if (sc->nbcnvifs >= ATH_BCBUF) {
1490 ath_err(common, "Not enough beacon buffers when adding"
1491 " new interface of type: %i\n",
1498 if ((ah->opmode == NL80211_IFTYPE_ADHOC) ||
1499 ((vif->type == NL80211_IFTYPE_ADHOC) &&
1501 ath_err(common, "Cannot create ADHOC interface when other"
1502 " interfaces already exist.\n");
1507 ath_dbg(common, ATH_DBG_CONFIG,
1508 "Attach a VIF of type: %d\n", vif->type);
1512 ath9k_do_vif_add_setup(hw, vif);
1514 mutex_unlock(&sc->mutex);
1515 ath9k_ps_restore(sc);
1519 static int ath9k_change_interface(struct ieee80211_hw *hw,
1520 struct ieee80211_vif *vif,
1521 enum nl80211_iftype new_type,
1524 struct ath_softc *sc = hw->priv;
1525 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1528 ath_dbg(common, ATH_DBG_CONFIG, "Change Interface\n");
1529 mutex_lock(&sc->mutex);
1530 ath9k_ps_wakeup(sc);
1532 /* See if new interface type is valid. */
1533 if ((new_type == NL80211_IFTYPE_ADHOC) &&
1535 ath_err(common, "When using ADHOC, it must be the only"
1541 if (ath9k_uses_beacons(new_type) &&
1542 !ath9k_uses_beacons(vif->type)) {
1543 if (sc->nbcnvifs >= ATH_BCBUF) {
1544 ath_err(common, "No beacon slot available\n");
1550 /* Clean up old vif stuff */
1551 if (ath9k_uses_beacons(vif->type))
1552 ath9k_reclaim_beacon(sc, vif);
1554 /* Add new settings */
1555 vif->type = new_type;
1558 ath9k_do_vif_add_setup(hw, vif);
1560 ath9k_ps_restore(sc);
1561 mutex_unlock(&sc->mutex);
1565 static void ath9k_remove_interface(struct ieee80211_hw *hw,
1566 struct ieee80211_vif *vif)
1568 struct ath_softc *sc = hw->priv;
1569 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1571 ath_dbg(common, ATH_DBG_CONFIG, "Detach Interface\n");
1573 ath9k_ps_wakeup(sc);
1574 mutex_lock(&sc->mutex);
1578 /* Reclaim beacon resources */
1579 if (ath9k_uses_beacons(vif->type))
1580 ath9k_reclaim_beacon(sc, vif);
1582 ath9k_calculate_summary_state(hw, NULL);
1584 mutex_unlock(&sc->mutex);
1585 ath9k_ps_restore(sc);
1588 static void ath9k_enable_ps(struct ath_softc *sc)
1590 struct ath_hw *ah = sc->sc_ah;
1592 sc->ps_enabled = true;
1593 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1594 if ((ah->imask & ATH9K_INT_TIM_TIMER) == 0) {
1595 ah->imask |= ATH9K_INT_TIM_TIMER;
1596 ath9k_hw_set_interrupts(ah, ah->imask);
1598 ath9k_hw_setrxabort(ah, 1);
1602 static void ath9k_disable_ps(struct ath_softc *sc)
1604 struct ath_hw *ah = sc->sc_ah;
1606 sc->ps_enabled = false;
1607 ath9k_hw_setpower(ah, ATH9K_PM_AWAKE);
1608 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1609 ath9k_hw_setrxabort(ah, 0);
1610 sc->ps_flags &= ~(PS_WAIT_FOR_BEACON |
1612 PS_WAIT_FOR_PSPOLL_DATA |
1613 PS_WAIT_FOR_TX_ACK);
1614 if (ah->imask & ATH9K_INT_TIM_TIMER) {
1615 ah->imask &= ~ATH9K_INT_TIM_TIMER;
1616 ath9k_hw_set_interrupts(ah, ah->imask);
1622 static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
1624 struct ath_softc *sc = hw->priv;
1625 struct ath_hw *ah = sc->sc_ah;
1626 struct ath_common *common = ath9k_hw_common(ah);
1627 struct ieee80211_conf *conf = &hw->conf;
1628 bool disable_radio = false;
1630 mutex_lock(&sc->mutex);
1633 * Leave this as the first check because we need to turn on the
1634 * radio if it was disabled before prior to processing the rest
1635 * of the changes. Likewise we must only disable the radio towards
1638 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1639 sc->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1641 ath_radio_enable(sc, hw);
1642 ath_dbg(common, ATH_DBG_CONFIG,
1643 "not-idle: enabling radio\n");
1645 disable_radio = true;
1650 * We just prepare to enable PS. We have to wait until our AP has
1651 * ACK'd our null data frame to disable RX otherwise we'll ignore
1652 * those ACKs and end up retransmitting the same null data frames.
1653 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1655 if (changed & IEEE80211_CONF_CHANGE_PS) {
1656 unsigned long flags;
1657 spin_lock_irqsave(&sc->sc_pm_lock, flags);
1658 if (conf->flags & IEEE80211_CONF_PS)
1659 ath9k_enable_ps(sc);
1661 ath9k_disable_ps(sc);
1662 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
1665 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
1666 if (conf->flags & IEEE80211_CONF_MONITOR) {
1667 ath_dbg(common, ATH_DBG_CONFIG,
1668 "Monitor mode is enabled\n");
1669 sc->sc_ah->is_monitoring = true;
1671 ath_dbg(common, ATH_DBG_CONFIG,
1672 "Monitor mode is disabled\n");
1673 sc->sc_ah->is_monitoring = false;
1677 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1678 struct ieee80211_channel *curchan = hw->conf.channel;
1679 int pos = curchan->hw_value;
1681 unsigned long flags;
1684 old_pos = ah->curchan - &ah->channels[0];
1686 if (hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
1687 sc->sc_flags |= SC_OP_OFFCHANNEL;
1689 sc->sc_flags &= ~SC_OP_OFFCHANNEL;
1691 ath_dbg(common, ATH_DBG_CONFIG,
1692 "Set channel: %d MHz type: %d\n",
1693 curchan->center_freq, conf->channel_type);
1695 ath9k_cmn_update_ichannel(&sc->sc_ah->channels[pos],
1696 curchan, conf->channel_type);
1698 /* update survey stats for the old channel before switching */
1699 spin_lock_irqsave(&common->cc_lock, flags);
1700 ath_update_survey_stats(sc);
1701 spin_unlock_irqrestore(&common->cc_lock, flags);
1704 * If the operating channel changes, change the survey in-use flags
1706 * Reset the survey data for the new channel, unless we're switching
1707 * back to the operating channel from an off-channel operation.
1709 if (!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) &&
1710 sc->cur_survey != &sc->survey[pos]) {
1713 sc->cur_survey->filled &= ~SURVEY_INFO_IN_USE;
1715 sc->cur_survey = &sc->survey[pos];
1717 memset(sc->cur_survey, 0, sizeof(struct survey_info));
1718 sc->cur_survey->filled |= SURVEY_INFO_IN_USE;
1719 } else if (!(sc->survey[pos].filled & SURVEY_INFO_IN_USE)) {
1720 memset(&sc->survey[pos], 0, sizeof(struct survey_info));
1723 if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
1724 ath_err(common, "Unable to set channel\n");
1725 mutex_unlock(&sc->mutex);
1730 * The most recent snapshot of channel->noisefloor for the old
1731 * channel is only available after the hardware reset. Copy it to
1732 * the survey stats now.
1735 ath_update_survey_nf(sc, old_pos);
1738 if (changed & IEEE80211_CONF_CHANGE_POWER) {
1739 ath_dbg(common, ATH_DBG_CONFIG,
1740 "Set power: %d\n", conf->power_level);
1741 sc->config.txpowlimit = 2 * conf->power_level;
1742 ath9k_ps_wakeup(sc);
1743 ath9k_cmn_update_txpow(ah, sc->curtxpow,
1744 sc->config.txpowlimit, &sc->curtxpow);
1745 ath9k_ps_restore(sc);
1748 if (disable_radio) {
1749 ath_dbg(common, ATH_DBG_CONFIG, "idle: disabling radio\n");
1750 ath_radio_disable(sc, hw);
1753 mutex_unlock(&sc->mutex);
1758 #define SUPPORTED_FILTERS \
1759 (FIF_PROMISC_IN_BSS | \
1764 FIF_BCN_PRBRESP_PROMISC | \
1768 /* FIXME: sc->sc_full_reset ? */
1769 static void ath9k_configure_filter(struct ieee80211_hw *hw,
1770 unsigned int changed_flags,
1771 unsigned int *total_flags,
1774 struct ath_softc *sc = hw->priv;
1777 changed_flags &= SUPPORTED_FILTERS;
1778 *total_flags &= SUPPORTED_FILTERS;
1780 sc->rx.rxfilter = *total_flags;
1781 ath9k_ps_wakeup(sc);
1782 rfilt = ath_calcrxfilter(sc);
1783 ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
1784 ath9k_ps_restore(sc);
1786 ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG,
1787 "Set HW RX filter: 0x%x\n", rfilt);
1790 static int ath9k_sta_add(struct ieee80211_hw *hw,
1791 struct ieee80211_vif *vif,
1792 struct ieee80211_sta *sta)
1794 struct ath_softc *sc = hw->priv;
1795 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1796 struct ath_node *an = (struct ath_node *) sta->drv_priv;
1797 struct ieee80211_key_conf ps_key = { };
1799 ath_node_attach(sc, sta);
1801 if (vif->type != NL80211_IFTYPE_AP &&
1802 vif->type != NL80211_IFTYPE_AP_VLAN)
1805 an->ps_key = ath_key_config(common, vif, sta, &ps_key);
1810 static void ath9k_del_ps_key(struct ath_softc *sc,
1811 struct ieee80211_vif *vif,
1812 struct ieee80211_sta *sta)
1814 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1815 struct ath_node *an = (struct ath_node *) sta->drv_priv;
1816 struct ieee80211_key_conf ps_key = { .hw_key_idx = an->ps_key };
1821 ath_key_delete(common, &ps_key);
1824 static int ath9k_sta_remove(struct ieee80211_hw *hw,
1825 struct ieee80211_vif *vif,
1826 struct ieee80211_sta *sta)
1828 struct ath_softc *sc = hw->priv;
1830 ath9k_del_ps_key(sc, vif, sta);
1831 ath_node_detach(sc, sta);
1836 static void ath9k_sta_notify(struct ieee80211_hw *hw,
1837 struct ieee80211_vif *vif,
1838 enum sta_notify_cmd cmd,
1839 struct ieee80211_sta *sta)
1841 struct ath_softc *sc = hw->priv;
1842 struct ath_node *an = (struct ath_node *) sta->drv_priv;
1845 case STA_NOTIFY_SLEEP:
1846 an->sleeping = true;
1847 if (ath_tx_aggr_sleep(sc, an))
1848 ieee80211_sta_set_tim(sta);
1850 case STA_NOTIFY_AWAKE:
1851 an->sleeping = false;
1852 ath_tx_aggr_wakeup(sc, an);
1857 static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue,
1858 const struct ieee80211_tx_queue_params *params)
1860 struct ath_softc *sc = hw->priv;
1861 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1862 struct ath_txq *txq;
1863 struct ath9k_tx_queue_info qi;
1866 if (queue >= WME_NUM_AC)
1869 txq = sc->tx.txq_map[queue];
1871 ath9k_ps_wakeup(sc);
1872 mutex_lock(&sc->mutex);
1874 memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
1876 qi.tqi_aifs = params->aifs;
1877 qi.tqi_cwmin = params->cw_min;
1878 qi.tqi_cwmax = params->cw_max;
1879 qi.tqi_burstTime = params->txop;
1881 ath_dbg(common, ATH_DBG_CONFIG,
1882 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1883 queue, txq->axq_qnum, params->aifs, params->cw_min,
1884 params->cw_max, params->txop);
1886 ret = ath_txq_update(sc, txq->axq_qnum, &qi);
1888 ath_err(common, "TXQ Update failed\n");
1890 if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC)
1891 if (queue == WME_AC_BE && !ret)
1892 ath_beaconq_config(sc);
1894 mutex_unlock(&sc->mutex);
1895 ath9k_ps_restore(sc);
1900 static int ath9k_set_key(struct ieee80211_hw *hw,
1901 enum set_key_cmd cmd,
1902 struct ieee80211_vif *vif,
1903 struct ieee80211_sta *sta,
1904 struct ieee80211_key_conf *key)
1906 struct ath_softc *sc = hw->priv;
1907 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1910 if (ath9k_modparam_nohwcrypt)
1913 if (vif->type == NL80211_IFTYPE_ADHOC &&
1914 (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
1915 key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
1916 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
1918 * For now, disable hw crypto for the RSN IBSS group keys. This
1919 * could be optimized in the future to use a modified key cache
1920 * design to support per-STA RX GTK, but until that gets
1921 * implemented, use of software crypto for group addressed
1922 * frames is a acceptable to allow RSN IBSS to be used.
1927 mutex_lock(&sc->mutex);
1928 ath9k_ps_wakeup(sc);
1929 ath_dbg(common, ATH_DBG_CONFIG, "Set HW Key\n");
1934 ath9k_del_ps_key(sc, vif, sta);
1936 ret = ath_key_config(common, vif, sta, key);
1938 key->hw_key_idx = ret;
1939 /* push IV and Michael MIC generation to stack */
1940 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1941 if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
1942 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1943 if (sc->sc_ah->sw_mgmt_crypto &&
1944 key->cipher == WLAN_CIPHER_SUITE_CCMP)
1945 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
1950 ath_key_delete(common, key);
1956 ath9k_ps_restore(sc);
1957 mutex_unlock(&sc->mutex);
1961 static void ath9k_bss_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
1963 struct ath_softc *sc = data;
1964 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1965 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1966 struct ath_vif *avp = (void *)vif->drv_priv;
1969 * Skip iteration if primary station vif's bss info
1972 if (sc->sc_flags & SC_OP_PRIM_STA_VIF)
1975 if (bss_conf->assoc) {
1976 sc->sc_flags |= SC_OP_PRIM_STA_VIF;
1977 avp->primary_sta_vif = true;
1978 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1979 common->curaid = bss_conf->aid;
1980 ath9k_hw_write_associd(sc->sc_ah);
1981 ath_dbg(common, ATH_DBG_CONFIG,
1982 "Bss Info ASSOC %d, bssid: %pM\n",
1983 bss_conf->aid, common->curbssid);
1984 ath_beacon_config(sc, vif);
1986 * Request a re-configuration of Beacon related timers
1987 * on the receipt of the first Beacon frame (i.e.,
1988 * after time sync with the AP).
1990 sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON;
1991 /* Reset rssi stats */
1992 sc->last_rssi = ATH_RSSI_DUMMY_MARKER;
1993 sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
1995 if (!common->disable_ani) {
1996 sc->sc_flags |= SC_OP_ANI_RUN;
1997 ath_start_ani(common);
2003 static void ath9k_config_bss(struct ath_softc *sc, struct ieee80211_vif *vif)
2005 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
2006 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2007 struct ath_vif *avp = (void *)vif->drv_priv;
2009 if (sc->sc_ah->opmode != NL80211_IFTYPE_STATION)
2012 /* Reconfigure bss info */
2013 if (avp->primary_sta_vif && !bss_conf->assoc) {
2014 ath_dbg(common, ATH_DBG_CONFIG,
2015 "Bss Info DISASSOC %d, bssid %pM\n",
2016 common->curaid, common->curbssid);
2017 sc->sc_flags &= ~(SC_OP_PRIM_STA_VIF | SC_OP_BEACONS);
2018 avp->primary_sta_vif = false;
2019 memset(common->curbssid, 0, ETH_ALEN);
2023 ieee80211_iterate_active_interfaces_atomic(
2024 sc->hw, ath9k_bss_iter, sc);
2027 * None of station vifs are associated.
2030 if (!(sc->sc_flags & SC_OP_PRIM_STA_VIF)) {
2031 ath9k_hw_write_associd(sc->sc_ah);
2033 sc->sc_flags &= ~SC_OP_ANI_RUN;
2034 del_timer_sync(&common->ani.timer);
2038 static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
2039 struct ieee80211_vif *vif,
2040 struct ieee80211_bss_conf *bss_conf,
2043 struct ath_softc *sc = hw->priv;
2044 struct ath_hw *ah = sc->sc_ah;
2045 struct ath_common *common = ath9k_hw_common(ah);
2046 struct ath_vif *avp = (void *)vif->drv_priv;
2050 ath9k_ps_wakeup(sc);
2051 mutex_lock(&sc->mutex);
2053 if (changed & BSS_CHANGED_BSSID) {
2054 ath9k_config_bss(sc, vif);
2056 ath_dbg(common, ATH_DBG_CONFIG, "BSSID: %pM aid: 0x%x\n",
2057 common->curbssid, common->curaid);
2060 if (changed & BSS_CHANGED_IBSS) {
2061 /* There can be only one vif available */
2062 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
2063 common->curaid = bss_conf->aid;
2064 ath9k_hw_write_associd(sc->sc_ah);
2066 if (bss_conf->ibss_joined) {
2067 sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
2069 if (!common->disable_ani) {
2070 sc->sc_flags |= SC_OP_ANI_RUN;
2071 ath_start_ani(common);
2075 sc->sc_flags &= ~SC_OP_ANI_RUN;
2076 del_timer_sync(&common->ani.timer);
2080 /* Enable transmission of beacons (AP, IBSS, MESH) */
2081 if ((changed & BSS_CHANGED_BEACON) ||
2082 ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon)) {
2083 ath9k_set_beaconing_status(sc, false);
2084 error = ath_beacon_alloc(sc, vif);
2086 ath_beacon_config(sc, vif);
2087 ath9k_set_beaconing_status(sc, true);
2090 if (changed & BSS_CHANGED_ERP_SLOT) {
2091 if (bss_conf->use_short_slot)
2095 if (vif->type == NL80211_IFTYPE_AP) {
2097 * Defer update, so that connected stations can adjust
2098 * their settings at the same time.
2099 * See beacon.c for more details
2101 sc->beacon.slottime = slottime;
2102 sc->beacon.updateslot = UPDATE;
2104 ah->slottime = slottime;
2105 ath9k_hw_init_global_settings(ah);
2109 /* Disable transmission of beacons */
2110 if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
2111 !bss_conf->enable_beacon) {
2112 ath9k_set_beaconing_status(sc, false);
2113 avp->is_bslot_active = false;
2114 ath9k_set_beaconing_status(sc, true);
2117 if (changed & BSS_CHANGED_BEACON_INT) {
2119 * In case of AP mode, the HW TSF has to be reset
2120 * when the beacon interval changes.
2122 if (vif->type == NL80211_IFTYPE_AP) {
2123 sc->sc_flags |= SC_OP_TSF_RESET;
2124 ath9k_set_beaconing_status(sc, false);
2125 error = ath_beacon_alloc(sc, vif);
2127 ath_beacon_config(sc, vif);
2128 ath9k_set_beaconing_status(sc, true);
2130 ath_beacon_config(sc, vif);
2133 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
2134 ath_dbg(common, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n",
2135 bss_conf->use_short_preamble);
2136 if (bss_conf->use_short_preamble)
2137 sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
2139 sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT;
2142 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
2143 ath_dbg(common, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n",
2144 bss_conf->use_cts_prot);
2145 if (bss_conf->use_cts_prot &&
2146 hw->conf.channel->band != IEEE80211_BAND_5GHZ)
2147 sc->sc_flags |= SC_OP_PROTECT_ENABLE;
2149 sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
2152 mutex_unlock(&sc->mutex);
2153 ath9k_ps_restore(sc);
2156 static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
2158 struct ath_softc *sc = hw->priv;
2161 mutex_lock(&sc->mutex);
2162 ath9k_ps_wakeup(sc);
2163 tsf = ath9k_hw_gettsf64(sc->sc_ah);
2164 ath9k_ps_restore(sc);
2165 mutex_unlock(&sc->mutex);
2170 static void ath9k_set_tsf(struct ieee80211_hw *hw, u64 tsf)
2172 struct ath_softc *sc = hw->priv;
2174 mutex_lock(&sc->mutex);
2175 ath9k_ps_wakeup(sc);
2176 ath9k_hw_settsf64(sc->sc_ah, tsf);
2177 ath9k_ps_restore(sc);
2178 mutex_unlock(&sc->mutex);
2181 static void ath9k_reset_tsf(struct ieee80211_hw *hw)
2183 struct ath_softc *sc = hw->priv;
2185 mutex_lock(&sc->mutex);
2187 ath9k_ps_wakeup(sc);
2188 ath9k_hw_reset_tsf(sc->sc_ah);
2189 ath9k_ps_restore(sc);
2191 mutex_unlock(&sc->mutex);
2194 static int ath9k_ampdu_action(struct ieee80211_hw *hw,
2195 struct ieee80211_vif *vif,
2196 enum ieee80211_ampdu_mlme_action action,
2197 struct ieee80211_sta *sta,
2198 u16 tid, u16 *ssn, u8 buf_size)
2200 struct ath_softc *sc = hw->priv;
2206 case IEEE80211_AMPDU_RX_START:
2207 if (!(sc->sc_flags & SC_OP_RXAGGR))
2210 case IEEE80211_AMPDU_RX_STOP:
2212 case IEEE80211_AMPDU_TX_START:
2213 if (!(sc->sc_flags & SC_OP_TXAGGR))
2216 ath9k_ps_wakeup(sc);
2217 ret = ath_tx_aggr_start(sc, sta, tid, ssn);
2219 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2220 ath9k_ps_restore(sc);
2222 case IEEE80211_AMPDU_TX_STOP:
2223 ath9k_ps_wakeup(sc);
2224 ath_tx_aggr_stop(sc, sta, tid);
2225 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2226 ath9k_ps_restore(sc);
2228 case IEEE80211_AMPDU_TX_OPERATIONAL:
2229 ath9k_ps_wakeup(sc);
2230 ath_tx_aggr_resume(sc, sta, tid);
2231 ath9k_ps_restore(sc);
2234 ath_err(ath9k_hw_common(sc->sc_ah), "Unknown AMPDU action\n");
2242 static int ath9k_get_survey(struct ieee80211_hw *hw, int idx,
2243 struct survey_info *survey)
2245 struct ath_softc *sc = hw->priv;
2246 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
2247 struct ieee80211_supported_band *sband;
2248 struct ieee80211_channel *chan;
2249 unsigned long flags;
2252 spin_lock_irqsave(&common->cc_lock, flags);
2254 ath_update_survey_stats(sc);
2256 sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
2257 if (sband && idx >= sband->n_channels) {
2258 idx -= sband->n_channels;
2263 sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];
2265 if (!sband || idx >= sband->n_channels) {
2266 spin_unlock_irqrestore(&common->cc_lock, flags);
2270 chan = &sband->channels[idx];
2271 pos = chan->hw_value;
2272 memcpy(survey, &sc->survey[pos], sizeof(*survey));
2273 survey->channel = chan;
2274 spin_unlock_irqrestore(&common->cc_lock, flags);
2279 static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
2281 struct ath_softc *sc = hw->priv;
2282 struct ath_hw *ah = sc->sc_ah;
2284 mutex_lock(&sc->mutex);
2285 ah->coverage_class = coverage_class;
2286 ath9k_hw_init_global_settings(ah);
2287 mutex_unlock(&sc->mutex);
2290 static void ath9k_flush(struct ieee80211_hw *hw, bool drop)
2292 struct ath_softc *sc = hw->priv;
2293 struct ath_hw *ah = sc->sc_ah;
2294 struct ath_common *common = ath9k_hw_common(ah);
2295 int timeout = 200; /* ms */
2299 mutex_lock(&sc->mutex);
2300 cancel_delayed_work_sync(&sc->tx_complete_work);
2302 if (sc->sc_flags & SC_OP_INVALID) {
2303 ath_dbg(common, ATH_DBG_ANY, "Device not present\n");
2304 mutex_unlock(&sc->mutex);
2311 for (j = 0; j < timeout; j++) {
2315 usleep_range(1000, 2000);
2317 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
2318 if (!ATH_TXQ_SETUP(sc, i))
2321 npend = ath9k_has_pending_frames(sc, &sc->tx.txq[i]);
2331 ath9k_ps_wakeup(sc);
2332 spin_lock_bh(&sc->sc_pcu_lock);
2333 drain_txq = ath_drain_all_txq(sc, false);
2335 ath_reset(sc, false);
2336 spin_unlock_bh(&sc->sc_pcu_lock);
2337 ath9k_ps_restore(sc);
2338 ieee80211_wake_queues(hw);
2341 ieee80211_queue_delayed_work(hw, &sc->tx_complete_work, 0);
2342 mutex_unlock(&sc->mutex);
2345 static bool ath9k_tx_frames_pending(struct ieee80211_hw *hw)
2347 struct ath_softc *sc = hw->priv;
2350 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
2351 if (!ATH_TXQ_SETUP(sc, i))
2354 if (ath9k_has_pending_frames(sc, &sc->tx.txq[i]))
2360 static int ath9k_tx_last_beacon(struct ieee80211_hw *hw)
2362 struct ath_softc *sc = hw->priv;
2363 struct ath_hw *ah = sc->sc_ah;
2364 struct ieee80211_vif *vif;
2365 struct ath_vif *avp;
2367 struct ath_tx_status ts;
2370 vif = sc->beacon.bslot[0];
2374 avp = (void *)vif->drv_priv;
2375 if (!avp->is_bslot_active)
2378 if (!sc->beacon.tx_processed) {
2379 tasklet_disable(&sc->bcon_tasklet);
2382 if (!bf || !bf->bf_mpdu)
2385 status = ath9k_hw_txprocdesc(ah, bf->bf_desc, &ts);
2386 if (status == -EINPROGRESS)
2389 sc->beacon.tx_processed = true;
2390 sc->beacon.tx_last = !(ts.ts_status & ATH9K_TXERR_MASK);
2393 tasklet_enable(&sc->bcon_tasklet);
2396 return sc->beacon.tx_last;
2399 struct ieee80211_ops ath9k_ops = {
2401 .start = ath9k_start,
2403 .add_interface = ath9k_add_interface,
2404 .change_interface = ath9k_change_interface,
2405 .remove_interface = ath9k_remove_interface,
2406 .config = ath9k_config,
2407 .configure_filter = ath9k_configure_filter,
2408 .sta_add = ath9k_sta_add,
2409 .sta_remove = ath9k_sta_remove,
2410 .sta_notify = ath9k_sta_notify,
2411 .conf_tx = ath9k_conf_tx,
2412 .bss_info_changed = ath9k_bss_info_changed,
2413 .set_key = ath9k_set_key,
2414 .get_tsf = ath9k_get_tsf,
2415 .set_tsf = ath9k_set_tsf,
2416 .reset_tsf = ath9k_reset_tsf,
2417 .ampdu_action = ath9k_ampdu_action,
2418 .get_survey = ath9k_get_survey,
2419 .rfkill_poll = ath9k_rfkill_poll_state,
2420 .set_coverage_class = ath9k_set_coverage_class,
2421 .flush = ath9k_flush,
2422 .tx_frames_pending = ath9k_tx_frames_pending,
2423 .tx_last_beacon = ath9k_tx_last_beacon,