2 * Copyright (c) 2008-2009 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>
21 static void ath_update_txpow(struct ath_softc *sc)
23 struct ath_hw *ah = sc->sc_ah;
25 if (sc->curtxpow != sc->config.txpowlimit) {
26 ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit, false);
27 /* read back in case value is clamped */
28 sc->curtxpow = ath9k_hw_regulatory(ah)->power_limit;
32 static u8 parse_mpdudensity(u8 mpdudensity)
35 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
36 * 0 for no restriction
45 switch (mpdudensity) {
51 /* Our lower layer calculations limit our precision to
67 static struct ath9k_channel *ath_get_curchannel(struct ath_softc *sc,
68 struct ieee80211_hw *hw)
70 struct ieee80211_channel *curchan = hw->conf.channel;
71 struct ath9k_channel *channel;
74 chan_idx = curchan->hw_value;
75 channel = &sc->sc_ah->channels[chan_idx];
76 ath9k_update_ichannel(sc, hw, channel);
80 bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode)
85 spin_lock_irqsave(&sc->sc_pm_lock, flags);
86 ret = ath9k_hw_setpower(sc->sc_ah, mode);
87 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
92 void ath9k_ps_wakeup(struct ath_softc *sc)
94 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
96 enum ath9k_power_mode power_mode;
98 spin_lock_irqsave(&sc->sc_pm_lock, flags);
99 if (++sc->ps_usecount != 1)
102 power_mode = sc->sc_ah->power_mode;
103 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
106 * While the hardware is asleep, the cycle counters contain no
107 * useful data. Better clear them now so that they don't mess up
108 * survey data results.
110 if (power_mode != ATH9K_PM_AWAKE) {
111 spin_lock(&common->cc_lock);
112 ath_hw_cycle_counters_update(common);
113 memset(&common->cc_survey, 0, sizeof(common->cc_survey));
114 spin_unlock(&common->cc_lock);
118 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
121 void ath9k_ps_restore(struct ath_softc *sc)
123 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
126 spin_lock_irqsave(&sc->sc_pm_lock, flags);
127 if (--sc->ps_usecount != 0)
130 spin_lock(&common->cc_lock);
131 ath_hw_cycle_counters_update(common);
132 spin_unlock(&common->cc_lock);
135 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP);
136 else if (sc->ps_enabled &&
137 !(sc->ps_flags & (PS_WAIT_FOR_BEACON |
139 PS_WAIT_FOR_PSPOLL_DATA |
140 PS_WAIT_FOR_TX_ACK)))
141 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP);
144 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
147 static void ath_start_ani(struct ath_common *common)
149 struct ath_hw *ah = common->ah;
150 unsigned long timestamp = jiffies_to_msecs(jiffies);
151 struct ath_softc *sc = (struct ath_softc *) common->priv;
153 if (!(sc->sc_flags & SC_OP_ANI_RUN))
156 if (sc->sc_flags & SC_OP_OFFCHANNEL)
159 common->ani.longcal_timer = timestamp;
160 common->ani.shortcal_timer = timestamp;
161 common->ani.checkani_timer = timestamp;
163 mod_timer(&common->ani.timer,
165 msecs_to_jiffies((u32)ah->config.ani_poll_interval));
168 static void ath_update_survey_nf(struct ath_softc *sc, int channel)
170 struct ath_hw *ah = sc->sc_ah;
171 struct ath9k_channel *chan = &ah->channels[channel];
172 struct survey_info *survey = &sc->survey[channel];
174 if (chan->noisefloor) {
175 survey->filled |= SURVEY_INFO_NOISE_DBM;
176 survey->noise = chan->noisefloor;
180 static void ath_update_survey_stats(struct ath_softc *sc)
182 struct ath_hw *ah = sc->sc_ah;
183 struct ath_common *common = ath9k_hw_common(ah);
184 int pos = ah->curchan - &ah->channels[0];
185 struct survey_info *survey = &sc->survey[pos];
186 struct ath_cycle_counters *cc = &common->cc_survey;
187 unsigned int div = common->clockrate * 1000;
192 if (ah->power_mode == ATH9K_PM_AWAKE)
193 ath_hw_cycle_counters_update(common);
195 if (cc->cycles > 0) {
196 survey->filled |= SURVEY_INFO_CHANNEL_TIME |
197 SURVEY_INFO_CHANNEL_TIME_BUSY |
198 SURVEY_INFO_CHANNEL_TIME_RX |
199 SURVEY_INFO_CHANNEL_TIME_TX;
200 survey->channel_time += cc->cycles / div;
201 survey->channel_time_busy += cc->rx_busy / div;
202 survey->channel_time_rx += cc->rx_frame / div;
203 survey->channel_time_tx += cc->tx_frame / div;
205 memset(cc, 0, sizeof(*cc));
207 ath_update_survey_nf(sc, pos);
211 * Set/change channels. If the channel is really being changed, it's done
212 * by reseting the chip. To accomplish this we must first cleanup any pending
213 * DMA, then restart stuff.
215 int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
216 struct ath9k_channel *hchan)
218 struct ath_wiphy *aphy = hw->priv;
219 struct ath_hw *ah = sc->sc_ah;
220 struct ath_common *common = ath9k_hw_common(ah);
221 struct ieee80211_conf *conf = &common->hw->conf;
222 bool fastcc = true, stopped;
223 struct ieee80211_channel *channel = hw->conf.channel;
224 struct ath9k_hw_cal_data *caldata = NULL;
227 if (sc->sc_flags & SC_OP_INVALID)
230 del_timer_sync(&common->ani.timer);
231 cancel_work_sync(&sc->paprd_work);
232 cancel_work_sync(&sc->hw_check_work);
233 cancel_delayed_work_sync(&sc->tx_complete_work);
237 spin_lock_bh(&sc->sc_pcu_lock);
240 * This is only performed if the channel settings have
243 * To switch channels clear any pending DMA operations;
244 * wait long enough for the RX fifo to drain, reset the
245 * hardware at the new frequency, and then re-enable
246 * the relevant bits of the h/w.
248 ath9k_hw_disable_interrupts(ah);
249 stopped = ath_drain_all_txq(sc, false);
251 if (!ath_stoprecv(sc))
254 /* XXX: do not flush receive queue here. We don't want
255 * to flush data frames already in queue because of
256 * changing channel. */
258 if (!stopped || !(sc->sc_flags & SC_OP_OFFCHANNEL))
261 if (!(sc->sc_flags & SC_OP_OFFCHANNEL))
262 caldata = &aphy->caldata;
264 ath_dbg(common, ATH_DBG_CONFIG,
265 "(%u MHz) -> (%u MHz), conf_is_ht40: %d fastcc: %d\n",
266 sc->sc_ah->curchan->channel,
267 channel->center_freq, conf_is_ht40(conf),
270 r = ath9k_hw_reset(ah, hchan, caldata, fastcc);
273 "Unable to reset channel (%u MHz), reset status %d\n",
274 channel->center_freq, r);
278 if (ath_startrecv(sc) != 0) {
279 ath_err(common, "Unable to restart recv logic\n");
284 ath_update_txpow(sc);
285 ath9k_hw_set_interrupts(ah, ah->imask);
287 if (!(sc->sc_flags & (SC_OP_OFFCHANNEL))) {
288 ath_beacon_config(sc, NULL);
289 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
290 ath_start_ani(common);
294 spin_unlock_bh(&sc->sc_pcu_lock);
296 ath9k_ps_restore(sc);
300 static void ath_paprd_activate(struct ath_softc *sc)
302 struct ath_hw *ah = sc->sc_ah;
303 struct ath9k_hw_cal_data *caldata = ah->caldata;
304 struct ath_common *common = ath9k_hw_common(ah);
307 if (!caldata || !caldata->paprd_done)
311 ar9003_paprd_enable(ah, false);
312 for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
313 if (!(common->tx_chainmask & BIT(chain)))
316 ar9003_paprd_populate_single_table(ah, caldata, chain);
319 ar9003_paprd_enable(ah, true);
320 ath9k_ps_restore(sc);
323 static bool ath_paprd_send_frame(struct ath_softc *sc, struct sk_buff *skb, int chain)
325 struct ieee80211_hw *hw = sc->hw;
326 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
327 struct ath_tx_control txctl;
330 memset(&txctl, 0, sizeof(txctl));
331 txctl.txq = sc->tx.txq_map[WME_AC_BE];
333 memset(tx_info, 0, sizeof(*tx_info));
334 tx_info->band = hw->conf.channel->band;
335 tx_info->flags |= IEEE80211_TX_CTL_NO_ACK;
336 tx_info->control.rates[0].idx = 0;
337 tx_info->control.rates[0].count = 1;
338 tx_info->control.rates[0].flags = IEEE80211_TX_RC_MCS;
339 tx_info->control.rates[1].idx = -1;
341 init_completion(&sc->paprd_complete);
342 sc->paprd_pending = true;
343 txctl.paprd = BIT(chain);
344 if (ath_tx_start(hw, skb, &txctl) != 0)
347 time_left = wait_for_completion_timeout(&sc->paprd_complete,
348 msecs_to_jiffies(ATH_PAPRD_TIMEOUT));
349 sc->paprd_pending = false;
352 ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_CALIBRATE,
353 "Timeout waiting for paprd training on TX chain %d\n",
359 void ath_paprd_calibrate(struct work_struct *work)
361 struct ath_softc *sc = container_of(work, struct ath_softc, paprd_work);
362 struct ieee80211_hw *hw = sc->hw;
363 struct ath_hw *ah = sc->sc_ah;
364 struct ieee80211_hdr *hdr;
365 struct sk_buff *skb = NULL;
366 struct ath9k_hw_cal_data *caldata = ah->caldata;
367 struct ath_common *common = ath9k_hw_common(ah);
376 if (ar9003_paprd_init_table(ah) < 0)
379 skb = alloc_skb(len, GFP_KERNEL);
384 memset(skb->data, 0, len);
385 hdr = (struct ieee80211_hdr *)skb->data;
386 ftype = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC;
387 hdr->frame_control = cpu_to_le16(ftype);
388 hdr->duration_id = cpu_to_le16(10);
389 memcpy(hdr->addr1, hw->wiphy->perm_addr, ETH_ALEN);
390 memcpy(hdr->addr2, hw->wiphy->perm_addr, ETH_ALEN);
391 memcpy(hdr->addr3, hw->wiphy->perm_addr, ETH_ALEN);
394 for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
395 if (!(common->tx_chainmask & BIT(chain)))
400 ath_dbg(common, ATH_DBG_CALIBRATE,
401 "Sending PAPRD frame for thermal measurement "
402 "on chain %d\n", chain);
403 if (!ath_paprd_send_frame(sc, skb, chain))
406 ar9003_paprd_setup_gain_table(ah, chain);
408 ath_dbg(common, ATH_DBG_CALIBRATE,
409 "Sending PAPRD training frame on chain %d\n", chain);
410 if (!ath_paprd_send_frame(sc, skb, chain))
413 if (!ar9003_paprd_is_done(ah))
416 if (ar9003_paprd_create_curve(ah, caldata, chain) != 0)
424 caldata->paprd_done = true;
425 ath_paprd_activate(sc);
429 ath9k_ps_restore(sc);
433 * This routine performs the periodic noise floor calibration function
434 * that is used to adjust and optimize the chip performance. This
435 * takes environmental changes (location, temperature) into account.
436 * When the task is complete, it reschedules itself depending on the
437 * appropriate interval that was calculated.
439 void ath_ani_calibrate(unsigned long data)
441 struct ath_softc *sc = (struct ath_softc *)data;
442 struct ath_hw *ah = sc->sc_ah;
443 struct ath_common *common = ath9k_hw_common(ah);
444 bool longcal = false;
445 bool shortcal = false;
446 bool aniflag = false;
447 unsigned int timestamp = jiffies_to_msecs(jiffies);
448 u32 cal_interval, short_cal_interval, long_cal_interval;
451 if (ah->caldata && ah->caldata->nfcal_interference)
452 long_cal_interval = ATH_LONG_CALINTERVAL_INT;
454 long_cal_interval = ATH_LONG_CALINTERVAL;
456 short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ?
457 ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL;
459 /* Only calibrate if awake */
460 if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE)
465 /* Long calibration runs independently of short calibration. */
466 if ((timestamp - common->ani.longcal_timer) >= long_cal_interval) {
468 ath_dbg(common, ATH_DBG_ANI, "longcal @%lu\n", jiffies);
469 common->ani.longcal_timer = timestamp;
472 /* Short calibration applies only while caldone is false */
473 if (!common->ani.caldone) {
474 if ((timestamp - common->ani.shortcal_timer) >= short_cal_interval) {
476 ath_dbg(common, ATH_DBG_ANI,
477 "shortcal @%lu\n", jiffies);
478 common->ani.shortcal_timer = timestamp;
479 common->ani.resetcal_timer = timestamp;
482 if ((timestamp - common->ani.resetcal_timer) >=
483 ATH_RESTART_CALINTERVAL) {
484 common->ani.caldone = ath9k_hw_reset_calvalid(ah);
485 if (common->ani.caldone)
486 common->ani.resetcal_timer = timestamp;
490 /* Verify whether we must check ANI */
491 if ((timestamp - common->ani.checkani_timer) >=
492 ah->config.ani_poll_interval) {
494 common->ani.checkani_timer = timestamp;
497 /* Skip all processing if there's nothing to do. */
498 if (longcal || shortcal || aniflag) {
499 /* Call ANI routine if necessary */
501 spin_lock_irqsave(&common->cc_lock, flags);
502 ath9k_hw_ani_monitor(ah, ah->curchan);
503 ath_update_survey_stats(sc);
504 spin_unlock_irqrestore(&common->cc_lock, flags);
507 /* Perform calibration if necessary */
508 if (longcal || shortcal) {
509 common->ani.caldone =
510 ath9k_hw_calibrate(ah,
512 common->rx_chainmask,
517 ath9k_ps_restore(sc);
521 * Set timer interval based on previous results.
522 * The interval must be the shortest necessary to satisfy ANI,
523 * short calibration and long calibration.
525 cal_interval = ATH_LONG_CALINTERVAL;
526 if (sc->sc_ah->config.enable_ani)
527 cal_interval = min(cal_interval,
528 (u32)ah->config.ani_poll_interval);
529 if (!common->ani.caldone)
530 cal_interval = min(cal_interval, (u32)short_cal_interval);
532 mod_timer(&common->ani.timer, jiffies + msecs_to_jiffies(cal_interval));
533 if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) && ah->caldata) {
534 if (!ah->caldata->paprd_done)
535 ieee80211_queue_work(sc->hw, &sc->paprd_work);
536 else if (!ah->paprd_table_write_done)
537 ath_paprd_activate(sc);
541 static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta)
544 struct ath_hw *ah = sc->sc_ah;
545 an = (struct ath_node *)sta->drv_priv;
547 if ((ah->caps.hw_caps) & ATH9K_HW_CAP_APM)
548 sc->sc_flags |= SC_OP_ENABLE_APM;
550 if (sc->sc_flags & SC_OP_TXAGGR) {
551 ath_tx_node_init(sc, an);
552 an->maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
553 sta->ht_cap.ampdu_factor);
554 an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density);
558 static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
560 struct ath_node *an = (struct ath_node *)sta->drv_priv;
562 if (sc->sc_flags & SC_OP_TXAGGR)
563 ath_tx_node_cleanup(sc, an);
566 void ath_hw_check(struct work_struct *work)
568 struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
573 for (i = 0; i < 3; i++) {
574 if (ath9k_hw_check_alive(sc->sc_ah))
582 ath9k_ps_restore(sc);
585 void ath9k_tasklet(unsigned long data)
587 struct ath_softc *sc = (struct ath_softc *)data;
588 struct ath_hw *ah = sc->sc_ah;
589 struct ath_common *common = ath9k_hw_common(ah);
591 u32 status = sc->intrstatus;
596 if (status & ATH9K_INT_FATAL) {
598 ath9k_ps_restore(sc);
602 spin_lock_bh(&sc->sc_pcu_lock);
604 if (!ath9k_hw_check_alive(ah))
605 ieee80211_queue_work(sc->hw, &sc->hw_check_work);
607 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
608 rxmask = (ATH9K_INT_RXHP | ATH9K_INT_RXLP | ATH9K_INT_RXEOL |
611 rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
613 if (status & rxmask) {
614 /* Check for high priority Rx first */
615 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
616 (status & ATH9K_INT_RXHP))
617 ath_rx_tasklet(sc, 0, true);
619 ath_rx_tasklet(sc, 0, false);
622 if (status & ATH9K_INT_TX) {
623 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
624 ath_tx_edma_tasklet(sc);
629 if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
631 * TSF sync does not look correct; remain awake to sync with
634 ath_dbg(common, ATH_DBG_PS,
635 "TSFOOR - Sync with next Beacon\n");
636 sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC;
639 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
640 if (status & ATH9K_INT_GENTIMER)
641 ath_gen_timer_isr(sc->sc_ah);
643 /* re-enable hardware interrupt */
644 ath9k_hw_enable_interrupts(ah);
646 spin_unlock_bh(&sc->sc_pcu_lock);
647 ath9k_ps_restore(sc);
650 irqreturn_t ath_isr(int irq, void *dev)
652 #define SCHED_INTR ( \
665 struct ath_softc *sc = dev;
666 struct ath_hw *ah = sc->sc_ah;
667 struct ath_common *common = ath9k_hw_common(ah);
668 enum ath9k_int status;
672 * The hardware is not ready/present, don't
673 * touch anything. Note this can happen early
674 * on if the IRQ is shared.
676 if (sc->sc_flags & SC_OP_INVALID)
680 /* shared irq, not for us */
682 if (!ath9k_hw_intrpend(ah))
686 * Figure out the reason(s) for the interrupt. Note
687 * that the hal returns a pseudo-ISR that may include
688 * bits we haven't explicitly enabled so we mask the
689 * value to insure we only process bits we requested.
691 ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */
692 status &= ah->imask; /* discard unasked-for bits */
695 * If there are no status bits set, then this interrupt was not
696 * for me (should have been caught above).
701 /* Cache the status */
702 sc->intrstatus = status;
704 if (status & SCHED_INTR)
708 * If a FATAL or RXORN interrupt is received, we have to reset the
711 if ((status & ATH9K_INT_FATAL) || ((status & ATH9K_INT_RXORN) &&
712 !(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)))
715 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
716 (status & ATH9K_INT_BB_WATCHDOG)) {
718 spin_lock(&common->cc_lock);
719 ath_hw_cycle_counters_update(common);
720 ar9003_hw_bb_watchdog_dbg_info(ah);
721 spin_unlock(&common->cc_lock);
726 if (status & ATH9K_INT_SWBA)
727 tasklet_schedule(&sc->bcon_tasklet);
729 if (status & ATH9K_INT_TXURN)
730 ath9k_hw_updatetxtriglevel(ah, true);
732 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
733 if (status & ATH9K_INT_RXEOL) {
734 ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
735 ath9k_hw_set_interrupts(ah, ah->imask);
739 if (status & ATH9K_INT_MIB) {
741 * Disable interrupts until we service the MIB
742 * interrupt; otherwise it will continue to
745 ath9k_hw_disable_interrupts(ah);
747 * Let the hal handle the event. We assume
748 * it will clear whatever condition caused
751 spin_lock(&common->cc_lock);
752 ath9k_hw_proc_mib_event(ah);
753 spin_unlock(&common->cc_lock);
754 ath9k_hw_enable_interrupts(ah);
757 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
758 if (status & ATH9K_INT_TIM_TIMER) {
759 if (ATH_DBG_WARN_ON_ONCE(sc->ps_idle))
761 /* Clear RxAbort bit so that we can
763 ath9k_setpower(sc, ATH9K_PM_AWAKE);
764 ath9k_hw_setrxabort(sc->sc_ah, 0);
765 sc->ps_flags |= PS_WAIT_FOR_BEACON;
770 ath_debug_stat_interrupt(sc, status);
773 /* turn off every interrupt */
774 ath9k_hw_disable_interrupts(ah);
775 tasklet_schedule(&sc->intr_tq);
783 static u32 ath_get_extchanmode(struct ath_softc *sc,
784 struct ieee80211_channel *chan,
785 enum nl80211_channel_type channel_type)
789 switch (chan->band) {
790 case IEEE80211_BAND_2GHZ:
791 switch(channel_type) {
792 case NL80211_CHAN_NO_HT:
793 case NL80211_CHAN_HT20:
794 chanmode = CHANNEL_G_HT20;
796 case NL80211_CHAN_HT40PLUS:
797 chanmode = CHANNEL_G_HT40PLUS;
799 case NL80211_CHAN_HT40MINUS:
800 chanmode = CHANNEL_G_HT40MINUS;
804 case IEEE80211_BAND_5GHZ:
805 switch(channel_type) {
806 case NL80211_CHAN_NO_HT:
807 case NL80211_CHAN_HT20:
808 chanmode = CHANNEL_A_HT20;
810 case NL80211_CHAN_HT40PLUS:
811 chanmode = CHANNEL_A_HT40PLUS;
813 case NL80211_CHAN_HT40MINUS:
814 chanmode = CHANNEL_A_HT40MINUS;
825 static void ath9k_bss_assoc_info(struct ath_softc *sc,
826 struct ieee80211_hw *hw,
827 struct ieee80211_vif *vif,
828 struct ieee80211_bss_conf *bss_conf)
830 struct ath_wiphy *aphy = hw->priv;
831 struct ath_hw *ah = sc->sc_ah;
832 struct ath_common *common = ath9k_hw_common(ah);
834 if (bss_conf->assoc) {
835 ath_dbg(common, ATH_DBG_CONFIG,
836 "Bss Info ASSOC %d, bssid: %pM\n",
837 bss_conf->aid, common->curbssid);
839 /* New association, store aid */
840 common->curaid = bss_conf->aid;
841 ath9k_hw_write_associd(ah);
844 * Request a re-configuration of Beacon related timers
845 * on the receipt of the first Beacon frame (i.e.,
846 * after time sync with the AP).
848 sc->ps_flags |= PS_BEACON_SYNC;
850 /* Configure the beacon */
851 ath_beacon_config(sc, vif);
853 /* Reset rssi stats */
854 aphy->last_rssi = ATH_RSSI_DUMMY_MARKER;
855 sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
857 sc->sc_flags |= SC_OP_ANI_RUN;
858 ath_start_ani(common);
860 ath_dbg(common, ATH_DBG_CONFIG, "Bss Info DISASSOC\n");
863 sc->sc_flags &= ~SC_OP_ANI_RUN;
864 del_timer_sync(&common->ani.timer);
868 void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
870 struct ath_hw *ah = sc->sc_ah;
871 struct ath_common *common = ath9k_hw_common(ah);
872 struct ieee80211_channel *channel = hw->conf.channel;
876 spin_lock_bh(&sc->sc_pcu_lock);
878 ath9k_hw_configpcipowersave(ah, 0, 0);
881 ah->curchan = ath_get_curchannel(sc, sc->hw);
883 r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
886 "Unable to reset channel (%u MHz), reset status %d\n",
887 channel->center_freq, r);
890 ath_update_txpow(sc);
891 if (ath_startrecv(sc) != 0) {
892 ath_err(common, "Unable to restart recv logic\n");
895 if (sc->sc_flags & SC_OP_BEACONS)
896 ath_beacon_config(sc, NULL); /* restart beacons */
898 /* Re-Enable interrupts */
899 ath9k_hw_set_interrupts(ah, ah->imask);
902 ath9k_hw_cfg_output(ah, ah->led_pin,
903 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
904 ath9k_hw_set_gpio(ah, ah->led_pin, 0);
906 ieee80211_wake_queues(hw);
908 spin_unlock_bh(&sc->sc_pcu_lock);
910 ath9k_ps_restore(sc);
913 void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw)
915 struct ath_hw *ah = sc->sc_ah;
916 struct ieee80211_channel *channel = hw->conf.channel;
920 spin_lock_bh(&sc->sc_pcu_lock);
922 ieee80211_stop_queues(hw);
925 * Keep the LED on when the radio is disabled
926 * during idle unassociated state.
929 ath9k_hw_set_gpio(ah, ah->led_pin, 1);
930 ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
933 /* Disable interrupts */
934 ath9k_hw_disable_interrupts(ah);
936 ath_drain_all_txq(sc, false); /* clear pending tx frames */
938 ath_stoprecv(sc); /* turn off frame recv */
939 ath_flushrecv(sc); /* flush recv queue */
942 ah->curchan = ath_get_curchannel(sc, hw);
944 r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
946 ath_err(ath9k_hw_common(sc->sc_ah),
947 "Unable to reset channel (%u MHz), reset status %d\n",
948 channel->center_freq, r);
951 ath9k_hw_phy_disable(ah);
953 ath9k_hw_configpcipowersave(ah, 1, 1);
955 spin_unlock_bh(&sc->sc_pcu_lock);
956 ath9k_ps_restore(sc);
958 ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP);
961 int ath_reset(struct ath_softc *sc, bool retry_tx)
963 struct ath_hw *ah = sc->sc_ah;
964 struct ath_common *common = ath9k_hw_common(ah);
965 struct ieee80211_hw *hw = sc->hw;
969 del_timer_sync(&common->ani.timer);
971 spin_lock_bh(&sc->sc_pcu_lock);
973 ieee80211_stop_queues(hw);
975 ath9k_hw_disable_interrupts(ah);
976 ath_drain_all_txq(sc, retry_tx);
981 r = ath9k_hw_reset(ah, sc->sc_ah->curchan, ah->caldata, false);
984 "Unable to reset hardware; reset status %d\n", r);
986 if (ath_startrecv(sc) != 0)
987 ath_err(common, "Unable to start recv logic\n");
990 * We may be doing a reset in response to a request
991 * that changes the channel so update any state that
992 * might change as a result.
994 ath_update_txpow(sc);
996 if ((sc->sc_flags & SC_OP_BEACONS) || !(sc->sc_flags & (SC_OP_OFFCHANNEL)))
997 ath_beacon_config(sc, NULL); /* restart beacons */
999 ath9k_hw_set_interrupts(ah, ah->imask);
1003 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
1004 if (ATH_TXQ_SETUP(sc, i)) {
1005 spin_lock_bh(&sc->tx.txq[i].axq_lock);
1006 ath_txq_schedule(sc, &sc->tx.txq[i]);
1007 spin_unlock_bh(&sc->tx.txq[i].axq_lock);
1012 ieee80211_wake_queues(hw);
1013 spin_unlock_bh(&sc->sc_pcu_lock);
1016 ath_start_ani(common);
1021 /* XXX: Remove me once we don't depend on ath9k_channel for all
1022 * this redundant data */
1023 void ath9k_update_ichannel(struct ath_softc *sc, struct ieee80211_hw *hw,
1024 struct ath9k_channel *ichan)
1026 struct ieee80211_channel *chan = hw->conf.channel;
1027 struct ieee80211_conf *conf = &hw->conf;
1029 ichan->channel = chan->center_freq;
1032 if (chan->band == IEEE80211_BAND_2GHZ) {
1033 ichan->chanmode = CHANNEL_G;
1034 ichan->channelFlags = CHANNEL_2GHZ | CHANNEL_OFDM | CHANNEL_G;
1036 ichan->chanmode = CHANNEL_A;
1037 ichan->channelFlags = CHANNEL_5GHZ | CHANNEL_OFDM;
1040 if (conf_is_ht(conf))
1041 ichan->chanmode = ath_get_extchanmode(sc, chan,
1042 conf->channel_type);
1045 /**********************/
1046 /* mac80211 callbacks */
1047 /**********************/
1049 static int ath9k_start(struct ieee80211_hw *hw)
1051 struct ath_wiphy *aphy = hw->priv;
1052 struct ath_softc *sc = aphy->sc;
1053 struct ath_hw *ah = sc->sc_ah;
1054 struct ath_common *common = ath9k_hw_common(ah);
1055 struct ieee80211_channel *curchan = hw->conf.channel;
1056 struct ath9k_channel *init_channel;
1059 ath_dbg(common, ATH_DBG_CONFIG,
1060 "Starting driver with initial channel: %d MHz\n",
1061 curchan->center_freq);
1063 mutex_lock(&sc->mutex);
1065 if (ath9k_wiphy_started(sc)) {
1066 if (sc->chan_idx == curchan->hw_value) {
1068 * Already on the operational channel, the new wiphy
1069 * can be marked active.
1071 aphy->state = ATH_WIPHY_ACTIVE;
1072 ieee80211_wake_queues(hw);
1075 * Another wiphy is on another channel, start the new
1076 * wiphy in paused state.
1078 aphy->state = ATH_WIPHY_PAUSED;
1079 ieee80211_stop_queues(hw);
1081 mutex_unlock(&sc->mutex);
1084 aphy->state = ATH_WIPHY_ACTIVE;
1086 /* setup initial channel */
1088 sc->chan_idx = curchan->hw_value;
1090 init_channel = ath_get_curchannel(sc, hw);
1092 /* Reset SERDES registers */
1093 ath9k_hw_configpcipowersave(ah, 0, 0);
1096 * The basic interface to setting the hardware in a good
1097 * state is ``reset''. On return the hardware is known to
1098 * be powered up and with interrupts disabled. This must
1099 * be followed by initialization of the appropriate bits
1100 * and then setup of the interrupt mask.
1102 spin_lock_bh(&sc->sc_pcu_lock);
1103 r = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
1106 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
1107 r, curchan->center_freq);
1108 spin_unlock_bh(&sc->sc_pcu_lock);
1113 * This is needed only to setup initial state
1114 * but it's best done after a reset.
1116 ath_update_txpow(sc);
1119 * Setup the hardware after reset:
1120 * The receive engine is set going.
1121 * Frame transmit is handled entirely
1122 * in the frame output path; there's nothing to do
1123 * here except setup the interrupt mask.
1125 if (ath_startrecv(sc) != 0) {
1126 ath_err(common, "Unable to start recv logic\n");
1128 spin_unlock_bh(&sc->sc_pcu_lock);
1131 spin_unlock_bh(&sc->sc_pcu_lock);
1133 /* Setup our intr mask. */
1134 ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL |
1135 ATH9K_INT_RXORN | ATH9K_INT_FATAL |
1138 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
1139 ah->imask |= ATH9K_INT_RXHP |
1141 ATH9K_INT_BB_WATCHDOG;
1143 ah->imask |= ATH9K_INT_RX;
1145 ah->imask |= ATH9K_INT_GTT;
1147 if (ah->caps.hw_caps & ATH9K_HW_CAP_HT)
1148 ah->imask |= ATH9K_INT_CST;
1150 sc->sc_flags &= ~SC_OP_INVALID;
1151 sc->sc_ah->is_monitoring = false;
1153 /* Disable BMISS interrupt when we're not associated */
1154 ah->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
1155 ath9k_hw_set_interrupts(ah, ah->imask);
1157 ieee80211_wake_queues(hw);
1159 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
1161 if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) &&
1162 !ah->btcoex_hw.enabled) {
1163 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
1164 AR_STOMP_LOW_WLAN_WGHT);
1165 ath9k_hw_btcoex_enable(ah);
1167 if (common->bus_ops->bt_coex_prep)
1168 common->bus_ops->bt_coex_prep(common);
1169 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
1170 ath9k_btcoex_timer_resume(sc);
1173 /* User has the option to provide pm-qos value as a module
1174 * parameter rather than using the default value of
1175 * 'ATH9K_PM_QOS_DEFAULT_VALUE'.
1177 pm_qos_update_request(&sc->pm_qos_req, ath9k_pm_qos_value);
1179 if (ah->caps.pcie_lcr_extsync_en && common->bus_ops->extn_synch_en)
1180 common->bus_ops->extn_synch_en(common);
1183 mutex_unlock(&sc->mutex);
1188 static int ath9k_tx(struct ieee80211_hw *hw,
1189 struct sk_buff *skb)
1191 struct ath_wiphy *aphy = hw->priv;
1192 struct ath_softc *sc = aphy->sc;
1193 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1194 struct ath_tx_control txctl;
1195 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1197 if (aphy->state != ATH_WIPHY_ACTIVE && aphy->state != ATH_WIPHY_SCAN) {
1198 ath_dbg(common, ATH_DBG_XMIT,
1199 "ath9k: %s: TX in unexpected wiphy state %d\n",
1200 wiphy_name(hw->wiphy), aphy->state);
1204 if (sc->ps_enabled) {
1206 * mac80211 does not set PM field for normal data frames, so we
1207 * need to update that based on the current PS mode.
1209 if (ieee80211_is_data(hdr->frame_control) &&
1210 !ieee80211_is_nullfunc(hdr->frame_control) &&
1211 !ieee80211_has_pm(hdr->frame_control)) {
1212 ath_dbg(common, ATH_DBG_PS,
1213 "Add PM=1 for a TX frame while in PS mode\n");
1214 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1218 if (unlikely(sc->sc_ah->power_mode != ATH9K_PM_AWAKE)) {
1220 * We are using PS-Poll and mac80211 can request TX while in
1221 * power save mode. Need to wake up hardware for the TX to be
1222 * completed and if needed, also for RX of buffered frames.
1224 ath9k_ps_wakeup(sc);
1225 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
1226 ath9k_hw_setrxabort(sc->sc_ah, 0);
1227 if (ieee80211_is_pspoll(hdr->frame_control)) {
1228 ath_dbg(common, ATH_DBG_PS,
1229 "Sending PS-Poll to pick a buffered frame\n");
1230 sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA;
1232 ath_dbg(common, ATH_DBG_PS,
1233 "Wake up to complete TX\n");
1234 sc->ps_flags |= PS_WAIT_FOR_TX_ACK;
1237 * The actual restore operation will happen only after
1238 * the sc_flags bit is cleared. We are just dropping
1239 * the ps_usecount here.
1241 ath9k_ps_restore(sc);
1244 memset(&txctl, 0, sizeof(struct ath_tx_control));
1245 txctl.txq = sc->tx.txq_map[skb_get_queue_mapping(skb)];
1247 ath_dbg(common, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb);
1249 if (ath_tx_start(hw, skb, &txctl) != 0) {
1250 ath_dbg(common, ATH_DBG_XMIT, "TX failed\n");
1256 dev_kfree_skb_any(skb);
1260 static void ath9k_stop(struct ieee80211_hw *hw)
1262 struct ath_wiphy *aphy = hw->priv;
1263 struct ath_softc *sc = aphy->sc;
1264 struct ath_hw *ah = sc->sc_ah;
1265 struct ath_common *common = ath9k_hw_common(ah);
1268 mutex_lock(&sc->mutex);
1270 aphy->state = ATH_WIPHY_INACTIVE;
1273 cancel_delayed_work_sync(&sc->ath_led_blink_work);
1275 cancel_delayed_work_sync(&sc->tx_complete_work);
1276 cancel_work_sync(&sc->paprd_work);
1277 cancel_work_sync(&sc->hw_check_work);
1279 for (i = 0; i < sc->num_sec_wiphy; i++) {
1280 if (sc->sec_wiphy[i])
1284 if (i == sc->num_sec_wiphy) {
1285 cancel_delayed_work_sync(&sc->wiphy_work);
1286 cancel_work_sync(&sc->chan_work);
1289 if (sc->sc_flags & SC_OP_INVALID) {
1290 ath_dbg(common, ATH_DBG_ANY, "Device not present\n");
1291 mutex_unlock(&sc->mutex);
1295 if (ath9k_wiphy_started(sc)) {
1296 mutex_unlock(&sc->mutex);
1297 return; /* another wiphy still in use */
1300 /* Ensure HW is awake when we try to shut it down. */
1301 ath9k_ps_wakeup(sc);
1303 if (ah->btcoex_hw.enabled) {
1304 ath9k_hw_btcoex_disable(ah);
1305 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
1306 ath9k_btcoex_timer_pause(sc);
1309 spin_lock_bh(&sc->sc_pcu_lock);
1311 /* make sure h/w will not generate any interrupt
1312 * before setting the invalid flag. */
1313 ath9k_hw_disable_interrupts(ah);
1315 if (!(sc->sc_flags & SC_OP_INVALID)) {
1316 ath_drain_all_txq(sc, false);
1318 ath9k_hw_phy_disable(ah);
1320 sc->rx.rxlink = NULL;
1322 /* disable HAL and put h/w to sleep */
1323 ath9k_hw_disable(ah);
1324 ath9k_hw_configpcipowersave(ah, 1, 1);
1326 spin_unlock_bh(&sc->sc_pcu_lock);
1328 ath9k_ps_restore(sc);
1331 ath_radio_disable(sc, hw);
1333 sc->sc_flags |= SC_OP_INVALID;
1335 pm_qos_update_request(&sc->pm_qos_req, PM_QOS_DEFAULT_VALUE);
1337 mutex_unlock(&sc->mutex);
1339 ath_dbg(common, ATH_DBG_CONFIG, "Driver halt\n");
1342 static int ath9k_add_interface(struct ieee80211_hw *hw,
1343 struct ieee80211_vif *vif)
1345 struct ath_wiphy *aphy = hw->priv;
1346 struct ath_softc *sc = aphy->sc;
1347 struct ath_hw *ah = sc->sc_ah;
1348 struct ath_common *common = ath9k_hw_common(ah);
1349 struct ath_vif *avp = (void *)vif->drv_priv;
1350 enum nl80211_iftype ic_opmode = NL80211_IFTYPE_UNSPECIFIED;
1353 mutex_lock(&sc->mutex);
1355 switch (vif->type) {
1356 case NL80211_IFTYPE_STATION:
1357 ic_opmode = NL80211_IFTYPE_STATION;
1359 case NL80211_IFTYPE_WDS:
1360 ic_opmode = NL80211_IFTYPE_WDS;
1362 case NL80211_IFTYPE_ADHOC:
1363 case NL80211_IFTYPE_AP:
1364 case NL80211_IFTYPE_MESH_POINT:
1365 if (sc->nbcnvifs >= ATH_BCBUF) {
1369 ic_opmode = vif->type;
1372 ath_err(common, "Interface type %d not yet supported\n",
1378 ath_dbg(common, ATH_DBG_CONFIG,
1379 "Attach a VIF of type: %d\n", ic_opmode);
1381 /* Set the VIF opmode */
1382 avp->av_opmode = ic_opmode;
1387 ath9k_set_bssid_mask(hw, vif);
1390 goto out; /* skip global settings for secondary vif */
1392 if (ic_opmode == NL80211_IFTYPE_AP) {
1393 ath9k_hw_set_tsfadjust(ah, 1);
1394 sc->sc_flags |= SC_OP_TSF_RESET;
1397 /* Set the device opmode */
1398 ah->opmode = ic_opmode;
1401 * Enable MIB interrupts when there are hardware phy counters.
1402 * Note we only do this (at the moment) for station mode.
1404 if ((vif->type == NL80211_IFTYPE_STATION) ||
1405 (vif->type == NL80211_IFTYPE_ADHOC) ||
1406 (vif->type == NL80211_IFTYPE_MESH_POINT)) {
1407 if (ah->config.enable_ani)
1408 ah->imask |= ATH9K_INT_MIB;
1409 ah->imask |= ATH9K_INT_TSFOOR;
1412 ath9k_hw_set_interrupts(ah, ah->imask);
1414 if (vif->type == NL80211_IFTYPE_AP ||
1415 vif->type == NL80211_IFTYPE_ADHOC) {
1416 sc->sc_flags |= SC_OP_ANI_RUN;
1417 ath_start_ani(common);
1421 mutex_unlock(&sc->mutex);
1425 static void ath9k_reclaim_beacon(struct ath_softc *sc,
1426 struct ieee80211_vif *vif)
1428 struct ath_vif *avp = (void *)vif->drv_priv;
1430 /* Disable SWBA interrupt */
1431 sc->sc_ah->imask &= ~ATH9K_INT_SWBA;
1432 ath9k_ps_wakeup(sc);
1433 ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_ah->imask);
1434 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
1435 tasklet_kill(&sc->bcon_tasklet);
1436 ath9k_ps_restore(sc);
1438 ath_beacon_return(sc, avp);
1439 sc->sc_flags &= ~SC_OP_BEACONS;
1441 if (sc->nbcnvifs > 0) {
1442 /* Re-enable beaconing */
1443 sc->sc_ah->imask |= ATH9K_INT_SWBA;
1444 ath9k_ps_wakeup(sc);
1445 ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_ah->imask);
1446 ath9k_ps_restore(sc);
1450 static int ath9k_change_interface(struct ieee80211_hw *hw,
1451 struct ieee80211_vif *vif,
1452 enum nl80211_iftype new_type,
1455 struct ath_wiphy *aphy = hw->priv;
1456 struct ath_softc *sc = aphy->sc;
1457 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1459 ath_dbg(common, ATH_DBG_CONFIG, "Change Interface\n");
1460 mutex_lock(&sc->mutex);
1463 case NL80211_IFTYPE_AP:
1464 case NL80211_IFTYPE_ADHOC:
1465 if (sc->nbcnvifs >= ATH_BCBUF) {
1466 ath_err(common, "No beacon slot available\n");
1470 case NL80211_IFTYPE_STATION:
1472 sc->sc_flags &= ~SC_OP_ANI_RUN;
1473 del_timer_sync(&common->ani.timer);
1474 if ((vif->type == NL80211_IFTYPE_AP) ||
1475 (vif->type == NL80211_IFTYPE_ADHOC))
1476 ath9k_reclaim_beacon(sc, vif);
1479 ath_err(common, "Interface type %d not yet supported\n",
1481 mutex_unlock(&sc->mutex);
1484 vif->type = new_type;
1487 mutex_unlock(&sc->mutex);
1491 static void ath9k_remove_interface(struct ieee80211_hw *hw,
1492 struct ieee80211_vif *vif)
1494 struct ath_wiphy *aphy = hw->priv;
1495 struct ath_softc *sc = aphy->sc;
1496 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1498 ath_dbg(common, ATH_DBG_CONFIG, "Detach Interface\n");
1500 mutex_lock(&sc->mutex);
1503 sc->sc_flags &= ~SC_OP_ANI_RUN;
1504 del_timer_sync(&common->ani.timer);
1506 /* Reclaim beacon resources */
1507 if ((sc->sc_ah->opmode == NL80211_IFTYPE_AP) ||
1508 (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) ||
1509 (sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT))
1510 ath9k_reclaim_beacon(sc, vif);
1514 mutex_unlock(&sc->mutex);
1517 static void ath9k_enable_ps(struct ath_softc *sc)
1519 struct ath_hw *ah = sc->sc_ah;
1521 sc->ps_enabled = true;
1522 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1523 if ((ah->imask & ATH9K_INT_TIM_TIMER) == 0) {
1524 ah->imask |= ATH9K_INT_TIM_TIMER;
1525 ath9k_hw_set_interrupts(ah, ah->imask);
1527 ath9k_hw_setrxabort(ah, 1);
1531 static void ath9k_disable_ps(struct ath_softc *sc)
1533 struct ath_hw *ah = sc->sc_ah;
1535 sc->ps_enabled = false;
1536 ath9k_hw_setpower(ah, ATH9K_PM_AWAKE);
1537 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1538 ath9k_hw_setrxabort(ah, 0);
1539 sc->ps_flags &= ~(PS_WAIT_FOR_BEACON |
1541 PS_WAIT_FOR_PSPOLL_DATA |
1542 PS_WAIT_FOR_TX_ACK);
1543 if (ah->imask & ATH9K_INT_TIM_TIMER) {
1544 ah->imask &= ~ATH9K_INT_TIM_TIMER;
1545 ath9k_hw_set_interrupts(ah, ah->imask);
1551 static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
1553 struct ath_wiphy *aphy = hw->priv;
1554 struct ath_softc *sc = aphy->sc;
1555 struct ath_hw *ah = sc->sc_ah;
1556 struct ath_common *common = ath9k_hw_common(ah);
1557 struct ieee80211_conf *conf = &hw->conf;
1560 mutex_lock(&sc->mutex);
1563 * Leave this as the first check because we need to turn on the
1564 * radio if it was disabled before prior to processing the rest
1565 * of the changes. Likewise we must only disable the radio towards
1568 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1570 bool all_wiphys_idle;
1571 bool idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1573 spin_lock_bh(&sc->wiphy_lock);
1574 all_wiphys_idle = ath9k_all_wiphys_idle(sc);
1575 ath9k_set_wiphy_idle(aphy, idle);
1577 enable_radio = (!idle && all_wiphys_idle);
1580 * After we unlock here its possible another wiphy
1581 * can be re-renabled so to account for that we will
1582 * only disable the radio toward the end of this routine
1583 * if by then all wiphys are still idle.
1585 spin_unlock_bh(&sc->wiphy_lock);
1588 sc->ps_idle = false;
1589 ath_radio_enable(sc, hw);
1590 ath_dbg(common, ATH_DBG_CONFIG,
1591 "not-idle: enabling radio\n");
1596 * We just prepare to enable PS. We have to wait until our AP has
1597 * ACK'd our null data frame to disable RX otherwise we'll ignore
1598 * those ACKs and end up retransmitting the same null data frames.
1599 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1601 if (changed & IEEE80211_CONF_CHANGE_PS) {
1602 unsigned long flags;
1603 spin_lock_irqsave(&sc->sc_pm_lock, flags);
1604 if (conf->flags & IEEE80211_CONF_PS)
1605 ath9k_enable_ps(sc);
1607 ath9k_disable_ps(sc);
1608 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
1611 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
1612 if (conf->flags & IEEE80211_CONF_MONITOR) {
1613 ath_dbg(common, ATH_DBG_CONFIG,
1614 "Monitor mode is enabled\n");
1615 sc->sc_ah->is_monitoring = true;
1617 ath_dbg(common, ATH_DBG_CONFIG,
1618 "Monitor mode is disabled\n");
1619 sc->sc_ah->is_monitoring = false;
1623 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1624 struct ieee80211_channel *curchan = hw->conf.channel;
1625 int pos = curchan->hw_value;
1627 unsigned long flags;
1630 old_pos = ah->curchan - &ah->channels[0];
1632 aphy->chan_idx = pos;
1633 aphy->chan_is_ht = conf_is_ht(conf);
1634 if (hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
1635 sc->sc_flags |= SC_OP_OFFCHANNEL;
1637 sc->sc_flags &= ~SC_OP_OFFCHANNEL;
1639 if (aphy->state == ATH_WIPHY_SCAN ||
1640 aphy->state == ATH_WIPHY_ACTIVE)
1641 ath9k_wiphy_pause_all_forced(sc, aphy);
1644 * Do not change operational channel based on a paused
1647 goto skip_chan_change;
1650 ath_dbg(common, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
1651 curchan->center_freq);
1653 /* XXX: remove me eventualy */
1654 ath9k_update_ichannel(sc, hw, &sc->sc_ah->channels[pos]);
1656 /* update survey stats for the old channel before switching */
1657 spin_lock_irqsave(&common->cc_lock, flags);
1658 ath_update_survey_stats(sc);
1659 spin_unlock_irqrestore(&common->cc_lock, flags);
1662 * If the operating channel changes, change the survey in-use flags
1664 * Reset the survey data for the new channel, unless we're switching
1665 * back to the operating channel from an off-channel operation.
1667 if (!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) &&
1668 sc->cur_survey != &sc->survey[pos]) {
1671 sc->cur_survey->filled &= ~SURVEY_INFO_IN_USE;
1673 sc->cur_survey = &sc->survey[pos];
1675 memset(sc->cur_survey, 0, sizeof(struct survey_info));
1676 sc->cur_survey->filled |= SURVEY_INFO_IN_USE;
1677 } else if (!(sc->survey[pos].filled & SURVEY_INFO_IN_USE)) {
1678 memset(&sc->survey[pos], 0, sizeof(struct survey_info));
1681 if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
1682 ath_err(common, "Unable to set channel\n");
1683 mutex_unlock(&sc->mutex);
1688 * The most recent snapshot of channel->noisefloor for the old
1689 * channel is only available after the hardware reset. Copy it to
1690 * the survey stats now.
1693 ath_update_survey_nf(sc, old_pos);
1697 if (changed & IEEE80211_CONF_CHANGE_POWER) {
1698 sc->config.txpowlimit = 2 * conf->power_level;
1699 ath_update_txpow(sc);
1702 spin_lock_bh(&sc->wiphy_lock);
1703 disable_radio = ath9k_all_wiphys_idle(sc);
1704 spin_unlock_bh(&sc->wiphy_lock);
1706 if (disable_radio) {
1707 ath_dbg(common, ATH_DBG_CONFIG, "idle: disabling radio\n");
1709 ath_radio_disable(sc, hw);
1712 mutex_unlock(&sc->mutex);
1717 #define SUPPORTED_FILTERS \
1718 (FIF_PROMISC_IN_BSS | \
1723 FIF_BCN_PRBRESP_PROMISC | \
1727 /* FIXME: sc->sc_full_reset ? */
1728 static void ath9k_configure_filter(struct ieee80211_hw *hw,
1729 unsigned int changed_flags,
1730 unsigned int *total_flags,
1733 struct ath_wiphy *aphy = hw->priv;
1734 struct ath_softc *sc = aphy->sc;
1737 changed_flags &= SUPPORTED_FILTERS;
1738 *total_flags &= SUPPORTED_FILTERS;
1740 sc->rx.rxfilter = *total_flags;
1741 ath9k_ps_wakeup(sc);
1742 rfilt = ath_calcrxfilter(sc);
1743 ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
1744 ath9k_ps_restore(sc);
1746 ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG,
1747 "Set HW RX filter: 0x%x\n", rfilt);
1750 static int ath9k_sta_add(struct ieee80211_hw *hw,
1751 struct ieee80211_vif *vif,
1752 struct ieee80211_sta *sta)
1754 struct ath_wiphy *aphy = hw->priv;
1755 struct ath_softc *sc = aphy->sc;
1757 ath_node_attach(sc, sta);
1762 static int ath9k_sta_remove(struct ieee80211_hw *hw,
1763 struct ieee80211_vif *vif,
1764 struct ieee80211_sta *sta)
1766 struct ath_wiphy *aphy = hw->priv;
1767 struct ath_softc *sc = aphy->sc;
1769 ath_node_detach(sc, sta);
1774 static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue,
1775 const struct ieee80211_tx_queue_params *params)
1777 struct ath_wiphy *aphy = hw->priv;
1778 struct ath_softc *sc = aphy->sc;
1779 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1780 struct ath_txq *txq;
1781 struct ath9k_tx_queue_info qi;
1784 if (queue >= WME_NUM_AC)
1787 txq = sc->tx.txq_map[queue];
1789 mutex_lock(&sc->mutex);
1791 memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
1793 qi.tqi_aifs = params->aifs;
1794 qi.tqi_cwmin = params->cw_min;
1795 qi.tqi_cwmax = params->cw_max;
1796 qi.tqi_burstTime = params->txop;
1798 ath_dbg(common, ATH_DBG_CONFIG,
1799 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1800 queue, txq->axq_qnum, params->aifs, params->cw_min,
1801 params->cw_max, params->txop);
1803 ret = ath_txq_update(sc, txq->axq_qnum, &qi);
1805 ath_err(common, "TXQ Update failed\n");
1807 if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC)
1808 if (queue == WME_AC_BE && !ret)
1809 ath_beaconq_config(sc);
1811 mutex_unlock(&sc->mutex);
1816 static int ath9k_set_key(struct ieee80211_hw *hw,
1817 enum set_key_cmd cmd,
1818 struct ieee80211_vif *vif,
1819 struct ieee80211_sta *sta,
1820 struct ieee80211_key_conf *key)
1822 struct ath_wiphy *aphy = hw->priv;
1823 struct ath_softc *sc = aphy->sc;
1824 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1827 if (modparam_nohwcrypt)
1830 mutex_lock(&sc->mutex);
1831 ath9k_ps_wakeup(sc);
1832 ath_dbg(common, ATH_DBG_CONFIG, "Set HW Key\n");
1836 ret = ath_key_config(common, vif, sta, key);
1838 key->hw_key_idx = ret;
1839 /* push IV and Michael MIC generation to stack */
1840 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1841 if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
1842 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1843 if (sc->sc_ah->sw_mgmt_crypto &&
1844 key->cipher == WLAN_CIPHER_SUITE_CCMP)
1845 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
1850 ath_key_delete(common, key);
1856 ath9k_ps_restore(sc);
1857 mutex_unlock(&sc->mutex);
1862 static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
1863 struct ieee80211_vif *vif,
1864 struct ieee80211_bss_conf *bss_conf,
1867 struct ath_wiphy *aphy = hw->priv;
1868 struct ath_softc *sc = aphy->sc;
1869 struct ath_hw *ah = sc->sc_ah;
1870 struct ath_common *common = ath9k_hw_common(ah);
1871 struct ath_vif *avp = (void *)vif->drv_priv;
1875 mutex_lock(&sc->mutex);
1877 if (changed & BSS_CHANGED_BSSID) {
1879 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1880 memcpy(avp->bssid, bss_conf->bssid, ETH_ALEN);
1882 ath9k_hw_write_associd(ah);
1884 /* Set aggregation protection mode parameters */
1885 sc->config.ath_aggr_prot = 0;
1887 ath_dbg(common, ATH_DBG_CONFIG, "BSSID: %pM aid: 0x%x\n",
1888 common->curbssid, common->curaid);
1890 /* need to reconfigure the beacon */
1891 sc->sc_flags &= ~SC_OP_BEACONS ;
1894 /* Enable transmission of beacons (AP, IBSS, MESH) */
1895 if ((changed & BSS_CHANGED_BEACON) ||
1896 ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon)) {
1897 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
1898 error = ath_beacon_alloc(aphy, vif);
1900 ath_beacon_config(sc, vif);
1903 if (changed & BSS_CHANGED_ERP_SLOT) {
1904 if (bss_conf->use_short_slot)
1908 if (vif->type == NL80211_IFTYPE_AP) {
1910 * Defer update, so that connected stations can adjust
1911 * their settings at the same time.
1912 * See beacon.c for more details
1914 sc->beacon.slottime = slottime;
1915 sc->beacon.updateslot = UPDATE;
1917 ah->slottime = slottime;
1918 ath9k_hw_init_global_settings(ah);
1922 /* Disable transmission of beacons */
1923 if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon)
1924 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
1926 if (changed & BSS_CHANGED_BEACON_INT) {
1927 sc->beacon_interval = bss_conf->beacon_int;
1929 * In case of AP mode, the HW TSF has to be reset
1930 * when the beacon interval changes.
1932 if (vif->type == NL80211_IFTYPE_AP) {
1933 sc->sc_flags |= SC_OP_TSF_RESET;
1934 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
1935 error = ath_beacon_alloc(aphy, vif);
1937 ath_beacon_config(sc, vif);
1939 ath_beacon_config(sc, vif);
1943 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1944 ath_dbg(common, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n",
1945 bss_conf->use_short_preamble);
1946 if (bss_conf->use_short_preamble)
1947 sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
1949 sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT;
1952 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1953 ath_dbg(common, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n",
1954 bss_conf->use_cts_prot);
1955 if (bss_conf->use_cts_prot &&
1956 hw->conf.channel->band != IEEE80211_BAND_5GHZ)
1957 sc->sc_flags |= SC_OP_PROTECT_ENABLE;
1959 sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
1962 if (changed & BSS_CHANGED_ASSOC) {
1963 ath_dbg(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
1965 ath9k_bss_assoc_info(sc, hw, vif, bss_conf);
1968 mutex_unlock(&sc->mutex);
1971 static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
1974 struct ath_wiphy *aphy = hw->priv;
1975 struct ath_softc *sc = aphy->sc;
1977 mutex_lock(&sc->mutex);
1978 ath9k_ps_wakeup(sc);
1979 tsf = ath9k_hw_gettsf64(sc->sc_ah);
1980 ath9k_ps_restore(sc);
1981 mutex_unlock(&sc->mutex);
1986 static void ath9k_set_tsf(struct ieee80211_hw *hw, u64 tsf)
1988 struct ath_wiphy *aphy = hw->priv;
1989 struct ath_softc *sc = aphy->sc;
1991 mutex_lock(&sc->mutex);
1992 ath9k_ps_wakeup(sc);
1993 ath9k_hw_settsf64(sc->sc_ah, tsf);
1994 ath9k_ps_restore(sc);
1995 mutex_unlock(&sc->mutex);
1998 static void ath9k_reset_tsf(struct ieee80211_hw *hw)
2000 struct ath_wiphy *aphy = hw->priv;
2001 struct ath_softc *sc = aphy->sc;
2003 mutex_lock(&sc->mutex);
2005 ath9k_ps_wakeup(sc);
2006 ath9k_hw_reset_tsf(sc->sc_ah);
2007 ath9k_ps_restore(sc);
2009 mutex_unlock(&sc->mutex);
2012 static int ath9k_ampdu_action(struct ieee80211_hw *hw,
2013 struct ieee80211_vif *vif,
2014 enum ieee80211_ampdu_mlme_action action,
2015 struct ieee80211_sta *sta,
2018 struct ath_wiphy *aphy = hw->priv;
2019 struct ath_softc *sc = aphy->sc;
2025 case IEEE80211_AMPDU_RX_START:
2026 if (!(sc->sc_flags & SC_OP_RXAGGR))
2029 case IEEE80211_AMPDU_RX_STOP:
2031 case IEEE80211_AMPDU_TX_START:
2032 if (!(sc->sc_flags & SC_OP_TXAGGR))
2035 ath9k_ps_wakeup(sc);
2036 ret = ath_tx_aggr_start(sc, sta, tid, ssn);
2038 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2039 ath9k_ps_restore(sc);
2041 case IEEE80211_AMPDU_TX_STOP:
2042 ath9k_ps_wakeup(sc);
2043 ath_tx_aggr_stop(sc, sta, tid);
2044 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2045 ath9k_ps_restore(sc);
2047 case IEEE80211_AMPDU_TX_OPERATIONAL:
2048 ath9k_ps_wakeup(sc);
2049 ath_tx_aggr_resume(sc, sta, tid);
2050 ath9k_ps_restore(sc);
2053 ath_err(ath9k_hw_common(sc->sc_ah), "Unknown AMPDU action\n");
2061 static int ath9k_get_survey(struct ieee80211_hw *hw, int idx,
2062 struct survey_info *survey)
2064 struct ath_wiphy *aphy = hw->priv;
2065 struct ath_softc *sc = aphy->sc;
2066 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
2067 struct ieee80211_supported_band *sband;
2068 struct ieee80211_channel *chan;
2069 unsigned long flags;
2072 spin_lock_irqsave(&common->cc_lock, flags);
2074 ath_update_survey_stats(sc);
2076 sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
2077 if (sband && idx >= sband->n_channels) {
2078 idx -= sband->n_channels;
2083 sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];
2085 if (!sband || idx >= sband->n_channels) {
2086 spin_unlock_irqrestore(&common->cc_lock, flags);
2090 chan = &sband->channels[idx];
2091 pos = chan->hw_value;
2092 memcpy(survey, &sc->survey[pos], sizeof(*survey));
2093 survey->channel = chan;
2094 spin_unlock_irqrestore(&common->cc_lock, flags);
2099 static void ath9k_sw_scan_start(struct ieee80211_hw *hw)
2101 struct ath_wiphy *aphy = hw->priv;
2102 struct ath_softc *sc = aphy->sc;
2104 mutex_lock(&sc->mutex);
2105 if (ath9k_wiphy_scanning(sc)) {
2107 * There is a race here in mac80211 but fixing it requires
2108 * we revisit how we handle the scan complete callback.
2109 * After mac80211 fixes we will not have configured hardware
2110 * to the home channel nor would we have configured the RX
2113 mutex_unlock(&sc->mutex);
2117 aphy->state = ATH_WIPHY_SCAN;
2118 ath9k_wiphy_pause_all_forced(sc, aphy);
2119 mutex_unlock(&sc->mutex);
2123 * XXX: this requires a revisit after the driver
2124 * scan_complete gets moved to another place/removed in mac80211.
2126 static void ath9k_sw_scan_complete(struct ieee80211_hw *hw)
2128 struct ath_wiphy *aphy = hw->priv;
2129 struct ath_softc *sc = aphy->sc;
2131 mutex_lock(&sc->mutex);
2132 aphy->state = ATH_WIPHY_ACTIVE;
2133 mutex_unlock(&sc->mutex);
2136 static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
2138 struct ath_wiphy *aphy = hw->priv;
2139 struct ath_softc *sc = aphy->sc;
2140 struct ath_hw *ah = sc->sc_ah;
2142 mutex_lock(&sc->mutex);
2143 ah->coverage_class = coverage_class;
2144 ath9k_hw_init_global_settings(ah);
2145 mutex_unlock(&sc->mutex);
2148 struct ieee80211_ops ath9k_ops = {
2150 .start = ath9k_start,
2152 .add_interface = ath9k_add_interface,
2153 .change_interface = ath9k_change_interface,
2154 .remove_interface = ath9k_remove_interface,
2155 .config = ath9k_config,
2156 .configure_filter = ath9k_configure_filter,
2157 .sta_add = ath9k_sta_add,
2158 .sta_remove = ath9k_sta_remove,
2159 .conf_tx = ath9k_conf_tx,
2160 .bss_info_changed = ath9k_bss_info_changed,
2161 .set_key = ath9k_set_key,
2162 .get_tsf = ath9k_get_tsf,
2163 .set_tsf = ath9k_set_tsf,
2164 .reset_tsf = ath9k_reset_tsf,
2165 .ampdu_action = ath9k_ampdu_action,
2166 .get_survey = ath9k_get_survey,
2167 .sw_scan_start = ath9k_sw_scan_start,
2168 .sw_scan_complete = ath9k_sw_scan_complete,
2169 .rfkill_poll = ath9k_rfkill_poll_state,
2170 .set_coverage_class = ath9k_set_coverage_class,