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_cache_conf_rate(struct ath_softc *sc,
22 struct ieee80211_conf *conf)
24 switch (conf->channel->band) {
25 case IEEE80211_BAND_2GHZ:
26 if (conf_is_ht20(conf))
27 sc->cur_rate_mode = ATH9K_MODE_11NG_HT20;
28 else if (conf_is_ht40_minus(conf))
29 sc->cur_rate_mode = ATH9K_MODE_11NG_HT40MINUS;
30 else if (conf_is_ht40_plus(conf))
31 sc->cur_rate_mode = ATH9K_MODE_11NG_HT40PLUS;
33 sc->cur_rate_mode = ATH9K_MODE_11G;
35 case IEEE80211_BAND_5GHZ:
36 if (conf_is_ht20(conf))
37 sc->cur_rate_mode = ATH9K_MODE_11NA_HT20;
38 else if (conf_is_ht40_minus(conf))
39 sc->cur_rate_mode = ATH9K_MODE_11NA_HT40MINUS;
40 else if (conf_is_ht40_plus(conf))
41 sc->cur_rate_mode = ATH9K_MODE_11NA_HT40PLUS;
43 sc->cur_rate_mode = ATH9K_MODE_11A;
51 static void ath_update_txpow(struct ath_softc *sc)
53 struct ath_hw *ah = sc->sc_ah;
56 if (sc->curtxpow != sc->config.txpowlimit) {
57 ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit);
58 /* read back in case value is clamped */
59 ath9k_hw_getcapability(ah, ATH9K_CAP_TXPOW, 1, &txpow);
64 static u8 parse_mpdudensity(u8 mpdudensity)
67 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
68 * 0 for no restriction
77 switch (mpdudensity) {
83 /* Our lower layer calculations limit our precision to
99 static struct ath9k_channel *ath_get_curchannel(struct ath_softc *sc,
100 struct ieee80211_hw *hw)
102 struct ieee80211_channel *curchan = hw->conf.channel;
103 struct ath9k_channel *channel;
106 chan_idx = curchan->hw_value;
107 channel = &sc->sc_ah->channels[chan_idx];
108 ath9k_update_ichannel(sc, hw, channel);
112 bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode)
117 spin_lock_irqsave(&sc->sc_pm_lock, flags);
118 ret = ath9k_hw_setpower(sc->sc_ah, mode);
119 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
124 void ath9k_ps_wakeup(struct ath_softc *sc)
128 spin_lock_irqsave(&sc->sc_pm_lock, flags);
129 if (++sc->ps_usecount != 1)
132 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
135 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
138 void ath9k_ps_restore(struct ath_softc *sc)
142 spin_lock_irqsave(&sc->sc_pm_lock, flags);
143 if (--sc->ps_usecount != 0)
147 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP);
148 else if (sc->ps_enabled &&
149 !(sc->ps_flags & (PS_WAIT_FOR_BEACON |
151 PS_WAIT_FOR_PSPOLL_DATA |
152 PS_WAIT_FOR_TX_ACK)))
153 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP);
156 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
160 * Set/change channels. If the channel is really being changed, it's done
161 * by reseting the chip. To accomplish this we must first cleanup any pending
162 * DMA, then restart stuff.
164 int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
165 struct ath9k_channel *hchan)
167 struct ath_hw *ah = sc->sc_ah;
168 struct ath_common *common = ath9k_hw_common(ah);
169 struct ieee80211_conf *conf = &common->hw->conf;
170 bool fastcc = true, stopped;
171 struct ieee80211_channel *channel = hw->conf.channel;
174 if (sc->sc_flags & SC_OP_INVALID)
180 * This is only performed if the channel settings have
183 * To switch channels clear any pending DMA operations;
184 * wait long enough for the RX fifo to drain, reset the
185 * hardware at the new frequency, and then re-enable
186 * the relevant bits of the h/w.
188 ath9k_hw_set_interrupts(ah, 0);
189 ath_drain_all_txq(sc, false);
190 stopped = ath_stoprecv(sc);
192 /* XXX: do not flush receive queue here. We don't want
193 * to flush data frames already in queue because of
194 * changing channel. */
196 if (!stopped || (sc->sc_flags & SC_OP_FULL_RESET))
199 ath_print(common, ATH_DBG_CONFIG,
200 "(%u MHz) -> (%u MHz), conf_is_ht40: %d\n",
201 sc->sc_ah->curchan->channel,
202 channel->center_freq, conf_is_ht40(conf));
204 spin_lock_bh(&sc->sc_resetlock);
206 r = ath9k_hw_reset(ah, hchan, fastcc);
208 ath_print(common, ATH_DBG_FATAL,
209 "Unable to reset channel (%u MHz), "
211 channel->center_freq, r);
212 spin_unlock_bh(&sc->sc_resetlock);
215 spin_unlock_bh(&sc->sc_resetlock);
217 sc->sc_flags &= ~SC_OP_FULL_RESET;
219 if (ath_startrecv(sc) != 0) {
220 ath_print(common, ATH_DBG_FATAL,
221 "Unable to restart recv logic\n");
226 ath_cache_conf_rate(sc, &hw->conf);
227 ath_update_txpow(sc);
228 ath9k_hw_set_interrupts(ah, ah->imask);
231 ath9k_ps_restore(sc);
236 * This routine performs the periodic noise floor calibration function
237 * that is used to adjust and optimize the chip performance. This
238 * takes environmental changes (location, temperature) into account.
239 * When the task is complete, it reschedules itself depending on the
240 * appropriate interval that was calculated.
242 void ath_ani_calibrate(unsigned long data)
244 struct ath_softc *sc = (struct ath_softc *)data;
245 struct ath_hw *ah = sc->sc_ah;
246 struct ath_common *common = ath9k_hw_common(ah);
247 bool longcal = false;
248 bool shortcal = false;
249 bool aniflag = false;
250 unsigned int timestamp = jiffies_to_msecs(jiffies);
251 u32 cal_interval, short_cal_interval;
253 short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ?
254 ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL;
256 /* Only calibrate if awake */
257 if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE)
262 /* Long calibration runs independently of short calibration. */
263 if ((timestamp - common->ani.longcal_timer) >= ATH_LONG_CALINTERVAL) {
265 ath_print(common, ATH_DBG_ANI, "longcal @%lu\n", jiffies);
266 common->ani.longcal_timer = timestamp;
269 /* Short calibration applies only while caldone is false */
270 if (!common->ani.caldone) {
271 if ((timestamp - common->ani.shortcal_timer) >= short_cal_interval) {
273 ath_print(common, ATH_DBG_ANI,
274 "shortcal @%lu\n", jiffies);
275 common->ani.shortcal_timer = timestamp;
276 common->ani.resetcal_timer = timestamp;
279 if ((timestamp - common->ani.resetcal_timer) >=
280 ATH_RESTART_CALINTERVAL) {
281 common->ani.caldone = ath9k_hw_reset_calvalid(ah);
282 if (common->ani.caldone)
283 common->ani.resetcal_timer = timestamp;
287 /* Verify whether we must check ANI */
288 if ((timestamp - common->ani.checkani_timer) >= ATH_ANI_POLLINTERVAL) {
290 common->ani.checkani_timer = timestamp;
293 /* Skip all processing if there's nothing to do. */
294 if (longcal || shortcal || aniflag) {
295 /* Call ANI routine if necessary */
297 ath9k_hw_ani_monitor(ah, ah->curchan);
299 /* Perform calibration if necessary */
300 if (longcal || shortcal) {
301 common->ani.caldone =
302 ath9k_hw_calibrate(ah,
304 common->rx_chainmask,
308 common->ani.noise_floor = ath9k_hw_getchan_noise(ah,
311 ath_print(common, ATH_DBG_ANI,
312 " calibrate chan %u/%x nf: %d\n",
313 ah->curchan->channel,
314 ah->curchan->channelFlags,
315 common->ani.noise_floor);
319 ath9k_ps_restore(sc);
323 * Set timer interval based on previous results.
324 * The interval must be the shortest necessary to satisfy ANI,
325 * short calibration and long calibration.
327 cal_interval = ATH_LONG_CALINTERVAL;
328 if (sc->sc_ah->config.enable_ani)
329 cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL);
330 if (!common->ani.caldone)
331 cal_interval = min(cal_interval, (u32)short_cal_interval);
333 mod_timer(&common->ani.timer, jiffies + msecs_to_jiffies(cal_interval));
336 static void ath_start_ani(struct ath_common *common)
338 unsigned long timestamp = jiffies_to_msecs(jiffies);
340 common->ani.longcal_timer = timestamp;
341 common->ani.shortcal_timer = timestamp;
342 common->ani.checkani_timer = timestamp;
344 mod_timer(&common->ani.timer,
345 jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
349 * Update tx/rx chainmask. For legacy association,
350 * hard code chainmask to 1x1, for 11n association, use
351 * the chainmask configuration, for bt coexistence, use
352 * the chainmask configuration even in legacy mode.
354 void ath_update_chainmask(struct ath_softc *sc, int is_ht)
356 struct ath_hw *ah = sc->sc_ah;
357 struct ath_common *common = ath9k_hw_common(ah);
359 if ((sc->sc_flags & SC_OP_SCANNING) || is_ht ||
360 (ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE)) {
361 common->tx_chainmask = ah->caps.tx_chainmask;
362 common->rx_chainmask = ah->caps.rx_chainmask;
364 common->tx_chainmask = 1;
365 common->rx_chainmask = 1;
368 ath_print(common, ATH_DBG_CONFIG,
369 "tx chmask: %d, rx chmask: %d\n",
370 common->tx_chainmask,
371 common->rx_chainmask);
374 static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta)
378 an = (struct ath_node *)sta->drv_priv;
380 if (sc->sc_flags & SC_OP_TXAGGR) {
381 ath_tx_node_init(sc, an);
382 an->maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
383 sta->ht_cap.ampdu_factor);
384 an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density);
385 an->last_rssi = ATH_RSSI_DUMMY_MARKER;
389 static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
391 struct ath_node *an = (struct ath_node *)sta->drv_priv;
393 if (sc->sc_flags & SC_OP_TXAGGR)
394 ath_tx_node_cleanup(sc, an);
397 void ath9k_tasklet(unsigned long data)
399 struct ath_softc *sc = (struct ath_softc *)data;
400 struct ath_hw *ah = sc->sc_ah;
401 struct ath_common *common = ath9k_hw_common(ah);
403 u32 status = sc->intrstatus;
408 if ((status & ATH9K_INT_FATAL) ||
409 !ath9k_hw_check_alive(ah)) {
410 ath_reset(sc, false);
411 ath9k_ps_restore(sc);
415 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
416 rxmask = (ATH9K_INT_RXHP | ATH9K_INT_RXLP | ATH9K_INT_RXEOL |
419 rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
421 if (status & rxmask) {
422 spin_lock_bh(&sc->rx.rxflushlock);
424 /* Check for high priority Rx first */
425 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
426 (status & ATH9K_INT_RXHP))
427 ath_rx_tasklet(sc, 0, true);
429 ath_rx_tasklet(sc, 0, false);
430 spin_unlock_bh(&sc->rx.rxflushlock);
433 if (status & ATH9K_INT_TX) {
434 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
435 ath_tx_edma_tasklet(sc);
440 if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
442 * TSF sync does not look correct; remain awake to sync with
445 ath_print(common, ATH_DBG_PS,
446 "TSFOOR - Sync with next Beacon\n");
447 sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC;
450 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
451 if (status & ATH9K_INT_GENTIMER)
452 ath_gen_timer_isr(sc->sc_ah);
454 /* re-enable hardware interrupt */
455 ath9k_hw_set_interrupts(ah, ah->imask);
456 ath9k_ps_restore(sc);
459 irqreturn_t ath_isr(int irq, void *dev)
461 #define SCHED_INTR ( \
474 struct ath_softc *sc = dev;
475 struct ath_hw *ah = sc->sc_ah;
476 enum ath9k_int status;
480 * The hardware is not ready/present, don't
481 * touch anything. Note this can happen early
482 * on if the IRQ is shared.
484 if (sc->sc_flags & SC_OP_INVALID)
488 /* shared irq, not for us */
490 if (!ath9k_hw_intrpend(ah))
494 * Figure out the reason(s) for the interrupt. Note
495 * that the hal returns a pseudo-ISR that may include
496 * bits we haven't explicitly enabled so we mask the
497 * value to insure we only process bits we requested.
499 ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */
500 status &= ah->imask; /* discard unasked-for bits */
503 * If there are no status bits set, then this interrupt was not
504 * for me (should have been caught above).
509 /* Cache the status */
510 sc->intrstatus = status;
512 if (status & SCHED_INTR)
516 * If a FATAL or RXORN interrupt is received, we have to reset the
519 if ((status & ATH9K_INT_FATAL) || ((status & ATH9K_INT_RXORN) &&
520 !(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)))
523 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
524 (status & ATH9K_INT_BB_WATCHDOG)) {
525 ar9003_hw_bb_watchdog_dbg_info(ah);
529 if (status & ATH9K_INT_SWBA)
530 tasklet_schedule(&sc->bcon_tasklet);
532 if (status & ATH9K_INT_TXURN)
533 ath9k_hw_updatetxtriglevel(ah, true);
535 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
536 if (status & ATH9K_INT_RXEOL) {
537 ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
538 ath9k_hw_set_interrupts(ah, ah->imask);
542 if (status & ATH9K_INT_MIB) {
544 * Disable interrupts until we service the MIB
545 * interrupt; otherwise it will continue to
548 ath9k_hw_set_interrupts(ah, 0);
550 * Let the hal handle the event. We assume
551 * it will clear whatever condition caused
554 ath9k_hw_procmibevent(ah);
555 ath9k_hw_set_interrupts(ah, ah->imask);
558 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
559 if (status & ATH9K_INT_TIM_TIMER) {
560 /* Clear RxAbort bit so that we can
562 ath9k_setpower(sc, ATH9K_PM_AWAKE);
563 ath9k_hw_setrxabort(sc->sc_ah, 0);
564 sc->ps_flags |= PS_WAIT_FOR_BEACON;
569 ath_debug_stat_interrupt(sc, status);
572 /* turn off every interrupt except SWBA */
573 ath9k_hw_set_interrupts(ah, (ah->imask & ATH9K_INT_SWBA));
574 tasklet_schedule(&sc->intr_tq);
582 static u32 ath_get_extchanmode(struct ath_softc *sc,
583 struct ieee80211_channel *chan,
584 enum nl80211_channel_type channel_type)
588 switch (chan->band) {
589 case IEEE80211_BAND_2GHZ:
590 switch(channel_type) {
591 case NL80211_CHAN_NO_HT:
592 case NL80211_CHAN_HT20:
593 chanmode = CHANNEL_G_HT20;
595 case NL80211_CHAN_HT40PLUS:
596 chanmode = CHANNEL_G_HT40PLUS;
598 case NL80211_CHAN_HT40MINUS:
599 chanmode = CHANNEL_G_HT40MINUS;
603 case IEEE80211_BAND_5GHZ:
604 switch(channel_type) {
605 case NL80211_CHAN_NO_HT:
606 case NL80211_CHAN_HT20:
607 chanmode = CHANNEL_A_HT20;
609 case NL80211_CHAN_HT40PLUS:
610 chanmode = CHANNEL_A_HT40PLUS;
612 case NL80211_CHAN_HT40MINUS:
613 chanmode = CHANNEL_A_HT40MINUS;
624 static void ath9k_bss_assoc_info(struct ath_softc *sc,
625 struct ieee80211_vif *vif,
626 struct ieee80211_bss_conf *bss_conf)
628 struct ath_hw *ah = sc->sc_ah;
629 struct ath_common *common = ath9k_hw_common(ah);
631 if (bss_conf->assoc) {
632 ath_print(common, ATH_DBG_CONFIG,
633 "Bss Info ASSOC %d, bssid: %pM\n",
634 bss_conf->aid, common->curbssid);
636 /* New association, store aid */
637 common->curaid = bss_conf->aid;
638 ath9k_hw_write_associd(ah);
641 * Request a re-configuration of Beacon related timers
642 * on the receipt of the first Beacon frame (i.e.,
643 * after time sync with the AP).
645 sc->ps_flags |= PS_BEACON_SYNC;
647 /* Configure the beacon */
648 ath_beacon_config(sc, vif);
650 /* Reset rssi stats */
651 sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
653 ath_start_ani(common);
655 ath_print(common, ATH_DBG_CONFIG, "Bss Info DISASSOC\n");
658 del_timer_sync(&common->ani.timer);
662 void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
664 struct ath_hw *ah = sc->sc_ah;
665 struct ath_common *common = ath9k_hw_common(ah);
666 struct ieee80211_channel *channel = hw->conf.channel;
670 ath9k_hw_configpcipowersave(ah, 0, 0);
673 ah->curchan = ath_get_curchannel(sc, sc->hw);
675 spin_lock_bh(&sc->sc_resetlock);
676 r = ath9k_hw_reset(ah, ah->curchan, false);
678 ath_print(common, ATH_DBG_FATAL,
679 "Unable to reset channel (%u MHz), "
681 channel->center_freq, r);
683 spin_unlock_bh(&sc->sc_resetlock);
685 ath_update_txpow(sc);
686 if (ath_startrecv(sc) != 0) {
687 ath_print(common, ATH_DBG_FATAL,
688 "Unable to restart recv logic\n");
692 if (sc->sc_flags & SC_OP_BEACONS)
693 ath_beacon_config(sc, NULL); /* restart beacons */
695 /* Re-Enable interrupts */
696 ath9k_hw_set_interrupts(ah, ah->imask);
699 ath9k_hw_cfg_output(ah, ah->led_pin,
700 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
701 ath9k_hw_set_gpio(ah, ah->led_pin, 0);
703 ieee80211_wake_queues(hw);
704 ath9k_ps_restore(sc);
707 void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw)
709 struct ath_hw *ah = sc->sc_ah;
710 struct ieee80211_channel *channel = hw->conf.channel;
714 ieee80211_stop_queues(hw);
717 ath9k_hw_set_gpio(ah, ah->led_pin, 1);
718 ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
720 /* Disable interrupts */
721 ath9k_hw_set_interrupts(ah, 0);
723 ath_drain_all_txq(sc, false); /* clear pending tx frames */
724 ath_stoprecv(sc); /* turn off frame recv */
725 ath_flushrecv(sc); /* flush recv queue */
728 ah->curchan = ath_get_curchannel(sc, hw);
730 spin_lock_bh(&sc->sc_resetlock);
731 r = ath9k_hw_reset(ah, ah->curchan, false);
733 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
734 "Unable to reset channel (%u MHz), "
736 channel->center_freq, r);
738 spin_unlock_bh(&sc->sc_resetlock);
740 ath9k_hw_phy_disable(ah);
741 ath9k_hw_configpcipowersave(ah, 1, 1);
742 ath9k_ps_restore(sc);
743 ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP);
746 int ath_reset(struct ath_softc *sc, bool retry_tx)
748 struct ath_hw *ah = sc->sc_ah;
749 struct ath_common *common = ath9k_hw_common(ah);
750 struct ieee80211_hw *hw = sc->hw;
754 del_timer_sync(&common->ani.timer);
756 ieee80211_stop_queues(hw);
758 ath9k_hw_set_interrupts(ah, 0);
759 ath_drain_all_txq(sc, retry_tx);
763 spin_lock_bh(&sc->sc_resetlock);
764 r = ath9k_hw_reset(ah, sc->sc_ah->curchan, false);
766 ath_print(common, ATH_DBG_FATAL,
767 "Unable to reset hardware; reset status %d\n", r);
768 spin_unlock_bh(&sc->sc_resetlock);
770 if (ath_startrecv(sc) != 0)
771 ath_print(common, ATH_DBG_FATAL,
772 "Unable to start recv logic\n");
775 * We may be doing a reset in response to a request
776 * that changes the channel so update any state that
777 * might change as a result.
779 ath_cache_conf_rate(sc, &hw->conf);
781 ath_update_txpow(sc);
783 if (sc->sc_flags & SC_OP_BEACONS)
784 ath_beacon_config(sc, NULL); /* restart beacons */
786 ath9k_hw_set_interrupts(ah, ah->imask);
790 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
791 if (ATH_TXQ_SETUP(sc, i)) {
792 spin_lock_bh(&sc->tx.txq[i].axq_lock);
793 ath_txq_schedule(sc, &sc->tx.txq[i]);
794 spin_unlock_bh(&sc->tx.txq[i].axq_lock);
799 ieee80211_wake_queues(hw);
802 ath_start_ani(common);
807 int ath_get_hal_qnum(u16 queue, struct ath_softc *sc)
813 qnum = sc->tx.hwq_map[ATH9K_WME_AC_VO];
816 qnum = sc->tx.hwq_map[ATH9K_WME_AC_VI];
819 qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE];
822 qnum = sc->tx.hwq_map[ATH9K_WME_AC_BK];
825 qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE];
832 int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc)
837 case ATH9K_WME_AC_VO:
840 case ATH9K_WME_AC_VI:
843 case ATH9K_WME_AC_BE:
846 case ATH9K_WME_AC_BK:
857 /* XXX: Remove me once we don't depend on ath9k_channel for all
858 * this redundant data */
859 void ath9k_update_ichannel(struct ath_softc *sc, struct ieee80211_hw *hw,
860 struct ath9k_channel *ichan)
862 struct ieee80211_channel *chan = hw->conf.channel;
863 struct ieee80211_conf *conf = &hw->conf;
865 ichan->channel = chan->center_freq;
868 if (chan->band == IEEE80211_BAND_2GHZ) {
869 ichan->chanmode = CHANNEL_G;
870 ichan->channelFlags = CHANNEL_2GHZ | CHANNEL_OFDM | CHANNEL_G;
872 ichan->chanmode = CHANNEL_A;
873 ichan->channelFlags = CHANNEL_5GHZ | CHANNEL_OFDM;
876 if (conf_is_ht(conf))
877 ichan->chanmode = ath_get_extchanmode(sc, chan,
881 /**********************/
882 /* mac80211 callbacks */
883 /**********************/
885 static int ath9k_start(struct ieee80211_hw *hw)
887 struct ath_wiphy *aphy = hw->priv;
888 struct ath_softc *sc = aphy->sc;
889 struct ath_hw *ah = sc->sc_ah;
890 struct ath_common *common = ath9k_hw_common(ah);
891 struct ieee80211_channel *curchan = hw->conf.channel;
892 struct ath9k_channel *init_channel;
895 ath_print(common, ATH_DBG_CONFIG,
896 "Starting driver with initial channel: %d MHz\n",
897 curchan->center_freq);
899 mutex_lock(&sc->mutex);
901 if (ath9k_wiphy_started(sc)) {
902 if (sc->chan_idx == curchan->hw_value) {
904 * Already on the operational channel, the new wiphy
905 * can be marked active.
907 aphy->state = ATH_WIPHY_ACTIVE;
908 ieee80211_wake_queues(hw);
911 * Another wiphy is on another channel, start the new
912 * wiphy in paused state.
914 aphy->state = ATH_WIPHY_PAUSED;
915 ieee80211_stop_queues(hw);
917 mutex_unlock(&sc->mutex);
920 aphy->state = ATH_WIPHY_ACTIVE;
922 /* setup initial channel */
924 sc->chan_idx = curchan->hw_value;
926 init_channel = ath_get_curchannel(sc, hw);
928 /* Reset SERDES registers */
929 ath9k_hw_configpcipowersave(ah, 0, 0);
932 * The basic interface to setting the hardware in a good
933 * state is ``reset''. On return the hardware is known to
934 * be powered up and with interrupts disabled. This must
935 * be followed by initialization of the appropriate bits
936 * and then setup of the interrupt mask.
938 spin_lock_bh(&sc->sc_resetlock);
939 r = ath9k_hw_reset(ah, init_channel, false);
941 ath_print(common, ATH_DBG_FATAL,
942 "Unable to reset hardware; reset status %d "
943 "(freq %u MHz)\n", r,
944 curchan->center_freq);
945 spin_unlock_bh(&sc->sc_resetlock);
948 spin_unlock_bh(&sc->sc_resetlock);
951 * This is needed only to setup initial state
952 * but it's best done after a reset.
954 ath_update_txpow(sc);
957 * Setup the hardware after reset:
958 * The receive engine is set going.
959 * Frame transmit is handled entirely
960 * in the frame output path; there's nothing to do
961 * here except setup the interrupt mask.
963 if (ath_startrecv(sc) != 0) {
964 ath_print(common, ATH_DBG_FATAL,
965 "Unable to start recv logic\n");
970 /* Setup our intr mask. */
971 ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL |
972 ATH9K_INT_RXORN | ATH9K_INT_FATAL |
975 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
976 ah->imask |= ATH9K_INT_RXHP |
978 ATH9K_INT_BB_WATCHDOG;
980 ah->imask |= ATH9K_INT_RX;
982 if (ah->caps.hw_caps & ATH9K_HW_CAP_GTT)
983 ah->imask |= ATH9K_INT_GTT;
985 if (ah->caps.hw_caps & ATH9K_HW_CAP_HT)
986 ah->imask |= ATH9K_INT_CST;
988 ath_cache_conf_rate(sc, &hw->conf);
990 sc->sc_flags &= ~SC_OP_INVALID;
992 /* Disable BMISS interrupt when we're not associated */
993 ah->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
994 ath9k_hw_set_interrupts(ah, ah->imask);
996 ieee80211_wake_queues(hw);
998 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
1000 if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) &&
1001 !ah->btcoex_hw.enabled) {
1002 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
1003 AR_STOMP_LOW_WLAN_WGHT);
1004 ath9k_hw_btcoex_enable(ah);
1006 if (common->bus_ops->bt_coex_prep)
1007 common->bus_ops->bt_coex_prep(common);
1008 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
1009 ath9k_btcoex_timer_resume(sc);
1013 mutex_unlock(&sc->mutex);
1018 static int ath9k_tx(struct ieee80211_hw *hw,
1019 struct sk_buff *skb)
1021 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1022 struct ath_wiphy *aphy = hw->priv;
1023 struct ath_softc *sc = aphy->sc;
1024 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1025 struct ath_tx_control txctl;
1026 int padpos, padsize;
1027 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1029 if (aphy->state != ATH_WIPHY_ACTIVE && aphy->state != ATH_WIPHY_SCAN) {
1030 ath_print(common, ATH_DBG_XMIT,
1031 "ath9k: %s: TX in unexpected wiphy state "
1032 "%d\n", wiphy_name(hw->wiphy), aphy->state);
1036 if (sc->ps_enabled) {
1038 * mac80211 does not set PM field for normal data frames, so we
1039 * need to update that based on the current PS mode.
1041 if (ieee80211_is_data(hdr->frame_control) &&
1042 !ieee80211_is_nullfunc(hdr->frame_control) &&
1043 !ieee80211_has_pm(hdr->frame_control)) {
1044 ath_print(common, ATH_DBG_PS, "Add PM=1 for a TX frame "
1045 "while in PS mode\n");
1046 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1050 if (unlikely(sc->sc_ah->power_mode != ATH9K_PM_AWAKE)) {
1052 * We are using PS-Poll and mac80211 can request TX while in
1053 * power save mode. Need to wake up hardware for the TX to be
1054 * completed and if needed, also for RX of buffered frames.
1056 ath9k_ps_wakeup(sc);
1057 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
1058 ath9k_hw_setrxabort(sc->sc_ah, 0);
1059 if (ieee80211_is_pspoll(hdr->frame_control)) {
1060 ath_print(common, ATH_DBG_PS,
1061 "Sending PS-Poll to pick a buffered frame\n");
1062 sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA;
1064 ath_print(common, ATH_DBG_PS,
1065 "Wake up to complete TX\n");
1066 sc->ps_flags |= PS_WAIT_FOR_TX_ACK;
1069 * The actual restore operation will happen only after
1070 * the sc_flags bit is cleared. We are just dropping
1071 * the ps_usecount here.
1073 ath9k_ps_restore(sc);
1076 memset(&txctl, 0, sizeof(struct ath_tx_control));
1079 * As a temporary workaround, assign seq# here; this will likely need
1080 * to be cleaned up to work better with Beacon transmission and virtual
1083 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1084 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
1085 sc->tx.seq_no += 0x10;
1086 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1087 hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
1090 /* Add the padding after the header if this is not already done */
1091 padpos = ath9k_cmn_padpos(hdr->frame_control);
1092 padsize = padpos & 3;
1093 if (padsize && skb->len>padpos) {
1094 if (skb_headroom(skb) < padsize)
1096 skb_push(skb, padsize);
1097 memmove(skb->data, skb->data + padsize, padpos);
1100 /* Check if a tx queue is available */
1102 txctl.txq = ath_test_get_txq(sc, skb);
1106 ath_print(common, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb);
1108 if (ath_tx_start(hw, skb, &txctl) != 0) {
1109 ath_print(common, ATH_DBG_XMIT, "TX failed\n");
1115 dev_kfree_skb_any(skb);
1119 static void ath9k_stop(struct ieee80211_hw *hw)
1121 struct ath_wiphy *aphy = hw->priv;
1122 struct ath_softc *sc = aphy->sc;
1123 struct ath_hw *ah = sc->sc_ah;
1124 struct ath_common *common = ath9k_hw_common(ah);
1126 mutex_lock(&sc->mutex);
1128 aphy->state = ATH_WIPHY_INACTIVE;
1130 cancel_delayed_work_sync(&sc->ath_led_blink_work);
1131 cancel_delayed_work_sync(&sc->tx_complete_work);
1133 if (!sc->num_sec_wiphy) {
1134 cancel_delayed_work_sync(&sc->wiphy_work);
1135 cancel_work_sync(&sc->chan_work);
1138 if (sc->sc_flags & SC_OP_INVALID) {
1139 ath_print(common, ATH_DBG_ANY, "Device not present\n");
1140 mutex_unlock(&sc->mutex);
1144 if (ath9k_wiphy_started(sc)) {
1145 mutex_unlock(&sc->mutex);
1146 return; /* another wiphy still in use */
1149 /* Ensure HW is awake when we try to shut it down. */
1150 ath9k_ps_wakeup(sc);
1152 if (ah->btcoex_hw.enabled) {
1153 ath9k_hw_btcoex_disable(ah);
1154 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
1155 ath9k_btcoex_timer_pause(sc);
1158 /* make sure h/w will not generate any interrupt
1159 * before setting the invalid flag. */
1160 ath9k_hw_set_interrupts(ah, 0);
1162 if (!(sc->sc_flags & SC_OP_INVALID)) {
1163 ath_drain_all_txq(sc, false);
1165 ath9k_hw_phy_disable(ah);
1167 sc->rx.rxlink = NULL;
1169 /* disable HAL and put h/w to sleep */
1170 ath9k_hw_disable(ah);
1171 ath9k_hw_configpcipowersave(ah, 1, 1);
1172 ath9k_ps_restore(sc);
1174 /* Finally, put the chip in FULL SLEEP mode */
1175 ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP);
1177 sc->sc_flags |= SC_OP_INVALID;
1179 mutex_unlock(&sc->mutex);
1181 ath_print(common, ATH_DBG_CONFIG, "Driver halt\n");
1184 static int ath9k_add_interface(struct ieee80211_hw *hw,
1185 struct ieee80211_vif *vif)
1187 struct ath_wiphy *aphy = hw->priv;
1188 struct ath_softc *sc = aphy->sc;
1189 struct ath_hw *ah = sc->sc_ah;
1190 struct ath_common *common = ath9k_hw_common(ah);
1191 struct ath_vif *avp = (void *)vif->drv_priv;
1192 enum nl80211_iftype ic_opmode = NL80211_IFTYPE_UNSPECIFIED;
1195 mutex_lock(&sc->mutex);
1197 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK) &&
1203 switch (vif->type) {
1204 case NL80211_IFTYPE_STATION:
1205 ic_opmode = NL80211_IFTYPE_STATION;
1207 case NL80211_IFTYPE_ADHOC:
1208 case NL80211_IFTYPE_AP:
1209 case NL80211_IFTYPE_MESH_POINT:
1210 if (sc->nbcnvifs >= ATH_BCBUF) {
1214 ic_opmode = vif->type;
1217 ath_print(common, ATH_DBG_FATAL,
1218 "Interface type %d not yet supported\n", vif->type);
1223 ath_print(common, ATH_DBG_CONFIG,
1224 "Attach a VIF of type: %d\n", ic_opmode);
1226 /* Set the VIF opmode */
1227 avp->av_opmode = ic_opmode;
1232 if (ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK)
1233 ath9k_set_bssid_mask(hw);
1236 goto out; /* skip global settings for secondary vif */
1238 if (ic_opmode == NL80211_IFTYPE_AP) {
1239 ath9k_hw_set_tsfadjust(ah, 1);
1240 sc->sc_flags |= SC_OP_TSF_RESET;
1243 /* Set the device opmode */
1244 ah->opmode = ic_opmode;
1247 * Enable MIB interrupts when there are hardware phy counters.
1248 * Note we only do this (at the moment) for station mode.
1250 if ((vif->type == NL80211_IFTYPE_STATION) ||
1251 (vif->type == NL80211_IFTYPE_ADHOC) ||
1252 (vif->type == NL80211_IFTYPE_MESH_POINT)) {
1253 if (ah->config.enable_ani)
1254 ah->imask |= ATH9K_INT_MIB;
1255 ah->imask |= ATH9K_INT_TSFOOR;
1258 ath9k_hw_set_interrupts(ah, ah->imask);
1260 if (vif->type == NL80211_IFTYPE_AP ||
1261 vif->type == NL80211_IFTYPE_ADHOC ||
1262 vif->type == NL80211_IFTYPE_MONITOR)
1263 ath_start_ani(common);
1266 mutex_unlock(&sc->mutex);
1270 static void ath9k_remove_interface(struct ieee80211_hw *hw,
1271 struct ieee80211_vif *vif)
1273 struct ath_wiphy *aphy = hw->priv;
1274 struct ath_softc *sc = aphy->sc;
1275 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1276 struct ath_vif *avp = (void *)vif->drv_priv;
1279 ath_print(common, ATH_DBG_CONFIG, "Detach Interface\n");
1281 mutex_lock(&sc->mutex);
1284 del_timer_sync(&common->ani.timer);
1286 /* Reclaim beacon resources */
1287 if ((sc->sc_ah->opmode == NL80211_IFTYPE_AP) ||
1288 (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) ||
1289 (sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT)) {
1290 ath9k_ps_wakeup(sc);
1291 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
1292 ath9k_ps_restore(sc);
1295 ath_beacon_return(sc, avp);
1296 sc->sc_flags &= ~SC_OP_BEACONS;
1298 for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) {
1299 if (sc->beacon.bslot[i] == vif) {
1300 printk(KERN_DEBUG "%s: vif had allocated beacon "
1301 "slot\n", __func__);
1302 sc->beacon.bslot[i] = NULL;
1303 sc->beacon.bslot_aphy[i] = NULL;
1309 mutex_unlock(&sc->mutex);
1312 void ath9k_enable_ps(struct ath_softc *sc)
1314 struct ath_hw *ah = sc->sc_ah;
1316 sc->ps_enabled = true;
1317 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1318 if ((ah->imask & ATH9K_INT_TIM_TIMER) == 0) {
1319 ah->imask |= ATH9K_INT_TIM_TIMER;
1320 ath9k_hw_set_interrupts(ah, ah->imask);
1322 ath9k_hw_setrxabort(ah, 1);
1326 static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
1328 struct ath_wiphy *aphy = hw->priv;
1329 struct ath_softc *sc = aphy->sc;
1330 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1331 struct ieee80211_conf *conf = &hw->conf;
1332 struct ath_hw *ah = sc->sc_ah;
1335 mutex_lock(&sc->mutex);
1338 * Leave this as the first check because we need to turn on the
1339 * radio if it was disabled before prior to processing the rest
1340 * of the changes. Likewise we must only disable the radio towards
1343 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1345 bool all_wiphys_idle;
1346 bool idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1348 spin_lock_bh(&sc->wiphy_lock);
1349 all_wiphys_idle = ath9k_all_wiphys_idle(sc);
1350 ath9k_set_wiphy_idle(aphy, idle);
1352 enable_radio = (!idle && all_wiphys_idle);
1355 * After we unlock here its possible another wiphy
1356 * can be re-renabled so to account for that we will
1357 * only disable the radio toward the end of this routine
1358 * if by then all wiphys are still idle.
1360 spin_unlock_bh(&sc->wiphy_lock);
1363 sc->ps_idle = false;
1364 ath_radio_enable(sc, hw);
1365 ath_print(common, ATH_DBG_CONFIG,
1366 "not-idle: enabling radio\n");
1371 * We just prepare to enable PS. We have to wait until our AP has
1372 * ACK'd our null data frame to disable RX otherwise we'll ignore
1373 * those ACKs and end up retransmitting the same null data frames.
1374 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1376 if (changed & IEEE80211_CONF_CHANGE_PS) {
1377 if (conf->flags & IEEE80211_CONF_PS) {
1378 sc->ps_flags |= PS_ENABLED;
1380 * At this point we know hardware has received an ACK
1381 * of a previously sent null data frame.
1383 if ((sc->ps_flags & PS_NULLFUNC_COMPLETED)) {
1384 sc->ps_flags &= ~PS_NULLFUNC_COMPLETED;
1385 ath9k_enable_ps(sc);
1388 sc->ps_enabled = false;
1389 sc->ps_flags &= ~(PS_ENABLED |
1390 PS_NULLFUNC_COMPLETED);
1391 ath9k_setpower(sc, ATH9K_PM_AWAKE);
1392 if (!(ah->caps.hw_caps &
1393 ATH9K_HW_CAP_AUTOSLEEP)) {
1394 ath9k_hw_setrxabort(sc->sc_ah, 0);
1395 sc->ps_flags &= ~(PS_WAIT_FOR_BEACON |
1397 PS_WAIT_FOR_PSPOLL_DATA |
1398 PS_WAIT_FOR_TX_ACK);
1399 if (ah->imask & ATH9K_INT_TIM_TIMER) {
1400 ah->imask &= ~ATH9K_INT_TIM_TIMER;
1401 ath9k_hw_set_interrupts(sc->sc_ah,
1408 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
1409 if (conf->flags & IEEE80211_CONF_MONITOR) {
1410 ath_print(common, ATH_DBG_CONFIG,
1411 "HW opmode set to Monitor mode\n");
1412 sc->sc_ah->opmode = NL80211_IFTYPE_MONITOR;
1416 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1417 struct ieee80211_channel *curchan = hw->conf.channel;
1418 int pos = curchan->hw_value;
1420 aphy->chan_idx = pos;
1421 aphy->chan_is_ht = conf_is_ht(conf);
1423 if (aphy->state == ATH_WIPHY_SCAN ||
1424 aphy->state == ATH_WIPHY_ACTIVE)
1425 ath9k_wiphy_pause_all_forced(sc, aphy);
1428 * Do not change operational channel based on a paused
1431 goto skip_chan_change;
1434 ath_print(common, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
1435 curchan->center_freq);
1437 /* XXX: remove me eventualy */
1438 ath9k_update_ichannel(sc, hw, &sc->sc_ah->channels[pos]);
1440 ath_update_chainmask(sc, conf_is_ht(conf));
1442 if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
1443 ath_print(common, ATH_DBG_FATAL,
1444 "Unable to set channel\n");
1445 mutex_unlock(&sc->mutex);
1451 if (changed & IEEE80211_CONF_CHANGE_POWER) {
1452 sc->config.txpowlimit = 2 * conf->power_level;
1453 ath_update_txpow(sc);
1456 spin_lock_bh(&sc->wiphy_lock);
1457 disable_radio = ath9k_all_wiphys_idle(sc);
1458 spin_unlock_bh(&sc->wiphy_lock);
1460 if (disable_radio) {
1461 ath_print(common, ATH_DBG_CONFIG, "idle: disabling radio\n");
1463 ath_radio_disable(sc, hw);
1466 mutex_unlock(&sc->mutex);
1471 #define SUPPORTED_FILTERS \
1472 (FIF_PROMISC_IN_BSS | \
1477 FIF_BCN_PRBRESP_PROMISC | \
1480 /* FIXME: sc->sc_full_reset ? */
1481 static void ath9k_configure_filter(struct ieee80211_hw *hw,
1482 unsigned int changed_flags,
1483 unsigned int *total_flags,
1486 struct ath_wiphy *aphy = hw->priv;
1487 struct ath_softc *sc = aphy->sc;
1490 changed_flags &= SUPPORTED_FILTERS;
1491 *total_flags &= SUPPORTED_FILTERS;
1493 sc->rx.rxfilter = *total_flags;
1494 ath9k_ps_wakeup(sc);
1495 rfilt = ath_calcrxfilter(sc);
1496 ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
1497 ath9k_ps_restore(sc);
1499 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG,
1500 "Set HW RX filter: 0x%x\n", rfilt);
1503 static int ath9k_sta_add(struct ieee80211_hw *hw,
1504 struct ieee80211_vif *vif,
1505 struct ieee80211_sta *sta)
1507 struct ath_wiphy *aphy = hw->priv;
1508 struct ath_softc *sc = aphy->sc;
1510 ath_node_attach(sc, sta);
1515 static int ath9k_sta_remove(struct ieee80211_hw *hw,
1516 struct ieee80211_vif *vif,
1517 struct ieee80211_sta *sta)
1519 struct ath_wiphy *aphy = hw->priv;
1520 struct ath_softc *sc = aphy->sc;
1522 ath_node_detach(sc, sta);
1527 static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue,
1528 const struct ieee80211_tx_queue_params *params)
1530 struct ath_wiphy *aphy = hw->priv;
1531 struct ath_softc *sc = aphy->sc;
1532 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1533 struct ath9k_tx_queue_info qi;
1536 if (queue >= WME_NUM_AC)
1539 mutex_lock(&sc->mutex);
1541 memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
1543 qi.tqi_aifs = params->aifs;
1544 qi.tqi_cwmin = params->cw_min;
1545 qi.tqi_cwmax = params->cw_max;
1546 qi.tqi_burstTime = params->txop;
1547 qnum = ath_get_hal_qnum(queue, sc);
1549 ath_print(common, ATH_DBG_CONFIG,
1550 "Configure tx [queue/halq] [%d/%d], "
1551 "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1552 queue, qnum, params->aifs, params->cw_min,
1553 params->cw_max, params->txop);
1555 ret = ath_txq_update(sc, qnum, &qi);
1557 ath_print(common, ATH_DBG_FATAL, "TXQ Update failed\n");
1559 if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC)
1560 if ((qnum == sc->tx.hwq_map[ATH9K_WME_AC_BE]) && !ret)
1561 ath_beaconq_config(sc);
1563 mutex_unlock(&sc->mutex);
1568 static int ath9k_set_key(struct ieee80211_hw *hw,
1569 enum set_key_cmd cmd,
1570 struct ieee80211_vif *vif,
1571 struct ieee80211_sta *sta,
1572 struct ieee80211_key_conf *key)
1574 struct ath_wiphy *aphy = hw->priv;
1575 struct ath_softc *sc = aphy->sc;
1576 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1579 if (modparam_nohwcrypt)
1582 mutex_lock(&sc->mutex);
1583 ath9k_ps_wakeup(sc);
1584 ath_print(common, ATH_DBG_CONFIG, "Set HW Key\n");
1588 ret = ath9k_cmn_key_config(common, vif, sta, key);
1590 key->hw_key_idx = ret;
1591 /* push IV and Michael MIC generation to stack */
1592 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1593 if (key->alg == ALG_TKIP)
1594 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1595 if (sc->sc_ah->sw_mgmt_crypto && key->alg == ALG_CCMP)
1596 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
1601 ath9k_cmn_key_delete(common, key);
1607 ath9k_ps_restore(sc);
1608 mutex_unlock(&sc->mutex);
1613 static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
1614 struct ieee80211_vif *vif,
1615 struct ieee80211_bss_conf *bss_conf,
1618 struct ath_wiphy *aphy = hw->priv;
1619 struct ath_softc *sc = aphy->sc;
1620 struct ath_hw *ah = sc->sc_ah;
1621 struct ath_common *common = ath9k_hw_common(ah);
1622 struct ath_vif *avp = (void *)vif->drv_priv;
1626 mutex_lock(&sc->mutex);
1628 if (changed & BSS_CHANGED_BSSID) {
1630 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1631 memcpy(avp->bssid, bss_conf->bssid, ETH_ALEN);
1633 ath9k_hw_write_associd(ah);
1635 /* Set aggregation protection mode parameters */
1636 sc->config.ath_aggr_prot = 0;
1638 /* Only legacy IBSS for now */
1639 if (vif->type == NL80211_IFTYPE_ADHOC)
1640 ath_update_chainmask(sc, 0);
1642 ath_print(common, ATH_DBG_CONFIG,
1643 "BSSID: %pM aid: 0x%x\n",
1644 common->curbssid, common->curaid);
1646 /* need to reconfigure the beacon */
1647 sc->sc_flags &= ~SC_OP_BEACONS ;
1650 /* Enable transmission of beacons (AP, IBSS, MESH) */
1651 if ((changed & BSS_CHANGED_BEACON) ||
1652 ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon)) {
1653 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
1654 error = ath_beacon_alloc(aphy, vif);
1656 ath_beacon_config(sc, vif);
1659 if (changed & BSS_CHANGED_ERP_SLOT) {
1660 if (bss_conf->use_short_slot)
1664 if (vif->type == NL80211_IFTYPE_AP) {
1666 * Defer update, so that connected stations can adjust
1667 * their settings at the same time.
1668 * See beacon.c for more details
1670 sc->beacon.slottime = slottime;
1671 sc->beacon.updateslot = UPDATE;
1673 ah->slottime = slottime;
1674 ath9k_hw_init_global_settings(ah);
1678 /* Disable transmission of beacons */
1679 if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon)
1680 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
1682 if (changed & BSS_CHANGED_BEACON_INT) {
1683 sc->beacon_interval = bss_conf->beacon_int;
1685 * In case of AP mode, the HW TSF has to be reset
1686 * when the beacon interval changes.
1688 if (vif->type == NL80211_IFTYPE_AP) {
1689 sc->sc_flags |= SC_OP_TSF_RESET;
1690 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
1691 error = ath_beacon_alloc(aphy, vif);
1693 ath_beacon_config(sc, vif);
1695 ath_beacon_config(sc, vif);
1699 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1700 ath_print(common, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n",
1701 bss_conf->use_short_preamble);
1702 if (bss_conf->use_short_preamble)
1703 sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
1705 sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT;
1708 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1709 ath_print(common, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n",
1710 bss_conf->use_cts_prot);
1711 if (bss_conf->use_cts_prot &&
1712 hw->conf.channel->band != IEEE80211_BAND_5GHZ)
1713 sc->sc_flags |= SC_OP_PROTECT_ENABLE;
1715 sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
1718 if (changed & BSS_CHANGED_ASSOC) {
1719 ath_print(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
1721 ath9k_bss_assoc_info(sc, vif, bss_conf);
1724 mutex_unlock(&sc->mutex);
1727 static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
1730 struct ath_wiphy *aphy = hw->priv;
1731 struct ath_softc *sc = aphy->sc;
1733 mutex_lock(&sc->mutex);
1734 tsf = ath9k_hw_gettsf64(sc->sc_ah);
1735 mutex_unlock(&sc->mutex);
1740 static void ath9k_set_tsf(struct ieee80211_hw *hw, u64 tsf)
1742 struct ath_wiphy *aphy = hw->priv;
1743 struct ath_softc *sc = aphy->sc;
1745 mutex_lock(&sc->mutex);
1746 ath9k_hw_settsf64(sc->sc_ah, tsf);
1747 mutex_unlock(&sc->mutex);
1750 static void ath9k_reset_tsf(struct ieee80211_hw *hw)
1752 struct ath_wiphy *aphy = hw->priv;
1753 struct ath_softc *sc = aphy->sc;
1755 mutex_lock(&sc->mutex);
1757 ath9k_ps_wakeup(sc);
1758 ath9k_hw_reset_tsf(sc->sc_ah);
1759 ath9k_ps_restore(sc);
1761 mutex_unlock(&sc->mutex);
1764 static int ath9k_ampdu_action(struct ieee80211_hw *hw,
1765 struct ieee80211_vif *vif,
1766 enum ieee80211_ampdu_mlme_action action,
1767 struct ieee80211_sta *sta,
1770 struct ath_wiphy *aphy = hw->priv;
1771 struct ath_softc *sc = aphy->sc;
1775 case IEEE80211_AMPDU_RX_START:
1776 if (!(sc->sc_flags & SC_OP_RXAGGR))
1779 case IEEE80211_AMPDU_RX_STOP:
1781 case IEEE80211_AMPDU_TX_START:
1782 ath9k_ps_wakeup(sc);
1783 ath_tx_aggr_start(sc, sta, tid, ssn);
1784 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1785 ath9k_ps_restore(sc);
1787 case IEEE80211_AMPDU_TX_STOP:
1788 ath9k_ps_wakeup(sc);
1789 ath_tx_aggr_stop(sc, sta, tid);
1790 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1791 ath9k_ps_restore(sc);
1793 case IEEE80211_AMPDU_TX_OPERATIONAL:
1794 ath9k_ps_wakeup(sc);
1795 ath_tx_aggr_resume(sc, sta, tid);
1796 ath9k_ps_restore(sc);
1799 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
1800 "Unknown AMPDU action\n");
1806 static int ath9k_get_survey(struct ieee80211_hw *hw, int idx,
1807 struct survey_info *survey)
1809 struct ath_wiphy *aphy = hw->priv;
1810 struct ath_softc *sc = aphy->sc;
1811 struct ath_hw *ah = sc->sc_ah;
1812 struct ath_common *common = ath9k_hw_common(ah);
1813 struct ieee80211_conf *conf = &hw->conf;
1818 survey->channel = conf->channel;
1819 survey->filled = SURVEY_INFO_NOISE_DBM;
1820 survey->noise = common->ani.noise_floor;
1825 static void ath9k_sw_scan_start(struct ieee80211_hw *hw)
1827 struct ath_wiphy *aphy = hw->priv;
1828 struct ath_softc *sc = aphy->sc;
1829 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1831 mutex_lock(&sc->mutex);
1832 if (ath9k_wiphy_scanning(sc)) {
1833 printk(KERN_DEBUG "ath9k: Two wiphys trying to scan at the "
1836 * Do not allow the concurrent scanning state for now. This
1837 * could be improved with scanning control moved into ath9k.
1839 mutex_unlock(&sc->mutex);
1843 aphy->state = ATH_WIPHY_SCAN;
1844 ath9k_wiphy_pause_all_forced(sc, aphy);
1845 sc->sc_flags |= SC_OP_SCANNING;
1846 del_timer_sync(&common->ani.timer);
1847 cancel_delayed_work_sync(&sc->tx_complete_work);
1848 mutex_unlock(&sc->mutex);
1851 static void ath9k_sw_scan_complete(struct ieee80211_hw *hw)
1853 struct ath_wiphy *aphy = hw->priv;
1854 struct ath_softc *sc = aphy->sc;
1855 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1857 mutex_lock(&sc->mutex);
1858 aphy->state = ATH_WIPHY_ACTIVE;
1859 sc->sc_flags &= ~SC_OP_SCANNING;
1860 sc->sc_flags |= SC_OP_FULL_RESET;
1861 ath_start_ani(common);
1862 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
1863 ath_beacon_config(sc, NULL);
1864 mutex_unlock(&sc->mutex);
1867 static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
1869 struct ath_wiphy *aphy = hw->priv;
1870 struct ath_softc *sc = aphy->sc;
1871 struct ath_hw *ah = sc->sc_ah;
1873 mutex_lock(&sc->mutex);
1874 ah->coverage_class = coverage_class;
1875 ath9k_hw_init_global_settings(ah);
1876 mutex_unlock(&sc->mutex);
1879 struct ieee80211_ops ath9k_ops = {
1881 .start = ath9k_start,
1883 .add_interface = ath9k_add_interface,
1884 .remove_interface = ath9k_remove_interface,
1885 .config = ath9k_config,
1886 .configure_filter = ath9k_configure_filter,
1887 .sta_add = ath9k_sta_add,
1888 .sta_remove = ath9k_sta_remove,
1889 .conf_tx = ath9k_conf_tx,
1890 .bss_info_changed = ath9k_bss_info_changed,
1891 .set_key = ath9k_set_key,
1892 .get_tsf = ath9k_get_tsf,
1893 .set_tsf = ath9k_set_tsf,
1894 .reset_tsf = ath9k_reset_tsf,
1895 .ampdu_action = ath9k_ampdu_action,
1896 .get_survey = ath9k_get_survey,
1897 .sw_scan_start = ath9k_sw_scan_start,
1898 .sw_scan_complete = ath9k_sw_scan_complete,
1899 .rfkill_poll = ath9k_rfkill_poll_state,
1900 .set_coverage_class = ath9k_set_coverage_class,