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 ath_reset(sc, false);
410 ath9k_ps_restore(sc);
414 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
415 rxmask = (ATH9K_INT_RXHP | ATH9K_INT_RXLP | ATH9K_INT_RXEOL |
418 rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
420 if (status & rxmask) {
421 spin_lock_bh(&sc->rx.rxflushlock);
423 /* Check for high priority Rx first */
424 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
425 (status & ATH9K_INT_RXHP))
426 ath_rx_tasklet(sc, 0, true);
428 ath_rx_tasklet(sc, 0, false);
429 spin_unlock_bh(&sc->rx.rxflushlock);
432 if (status & ATH9K_INT_TX) {
433 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
434 ath_tx_edma_tasklet(sc);
439 if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
441 * TSF sync does not look correct; remain awake to sync with
444 ath_print(common, ATH_DBG_PS,
445 "TSFOOR - Sync with next Beacon\n");
446 sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC;
449 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
450 if (status & ATH9K_INT_GENTIMER)
451 ath_gen_timer_isr(sc->sc_ah);
453 /* re-enable hardware interrupt */
454 ath9k_hw_set_interrupts(ah, ah->imask);
455 ath9k_ps_restore(sc);
458 irqreturn_t ath_isr(int irq, void *dev)
460 #define SCHED_INTR ( \
473 struct ath_softc *sc = dev;
474 struct ath_hw *ah = sc->sc_ah;
475 enum ath9k_int status;
479 * The hardware is not ready/present, don't
480 * touch anything. Note this can happen early
481 * on if the IRQ is shared.
483 if (sc->sc_flags & SC_OP_INVALID)
487 /* shared irq, not for us */
489 if (!ath9k_hw_intrpend(ah))
493 * Figure out the reason(s) for the interrupt. Note
494 * that the hal returns a pseudo-ISR that may include
495 * bits we haven't explicitly enabled so we mask the
496 * value to insure we only process bits we requested.
498 ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */
499 status &= ah->imask; /* discard unasked-for bits */
502 * If there are no status bits set, then this interrupt was not
503 * for me (should have been caught above).
508 /* Cache the status */
509 sc->intrstatus = status;
511 if (status & SCHED_INTR)
515 * If a FATAL or RXORN interrupt is received, we have to reset the
518 if ((status & ATH9K_INT_FATAL) || ((status & ATH9K_INT_RXORN) &&
519 !(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)))
522 if (status & ATH9K_INT_SWBA)
523 tasklet_schedule(&sc->bcon_tasklet);
525 if (status & ATH9K_INT_TXURN)
526 ath9k_hw_updatetxtriglevel(ah, true);
528 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
529 if (status & ATH9K_INT_RXEOL) {
530 ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
531 ath9k_hw_set_interrupts(ah, ah->imask);
535 if (status & ATH9K_INT_MIB) {
537 * Disable interrupts until we service the MIB
538 * interrupt; otherwise it will continue to
541 ath9k_hw_set_interrupts(ah, 0);
543 * Let the hal handle the event. We assume
544 * it will clear whatever condition caused
547 ath9k_hw_procmibevent(ah);
548 ath9k_hw_set_interrupts(ah, ah->imask);
551 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
552 if (status & ATH9K_INT_TIM_TIMER) {
553 /* Clear RxAbort bit so that we can
555 ath9k_setpower(sc, ATH9K_PM_AWAKE);
556 ath9k_hw_setrxabort(sc->sc_ah, 0);
557 sc->ps_flags |= PS_WAIT_FOR_BEACON;
562 ath_debug_stat_interrupt(sc, status);
565 /* turn off every interrupt except SWBA */
566 ath9k_hw_set_interrupts(ah, (ah->imask & ATH9K_INT_SWBA));
567 tasklet_schedule(&sc->intr_tq);
575 static u32 ath_get_extchanmode(struct ath_softc *sc,
576 struct ieee80211_channel *chan,
577 enum nl80211_channel_type channel_type)
581 switch (chan->band) {
582 case IEEE80211_BAND_2GHZ:
583 switch(channel_type) {
584 case NL80211_CHAN_NO_HT:
585 case NL80211_CHAN_HT20:
586 chanmode = CHANNEL_G_HT20;
588 case NL80211_CHAN_HT40PLUS:
589 chanmode = CHANNEL_G_HT40PLUS;
591 case NL80211_CHAN_HT40MINUS:
592 chanmode = CHANNEL_G_HT40MINUS;
596 case IEEE80211_BAND_5GHZ:
597 switch(channel_type) {
598 case NL80211_CHAN_NO_HT:
599 case NL80211_CHAN_HT20:
600 chanmode = CHANNEL_A_HT20;
602 case NL80211_CHAN_HT40PLUS:
603 chanmode = CHANNEL_A_HT40PLUS;
605 case NL80211_CHAN_HT40MINUS:
606 chanmode = CHANNEL_A_HT40MINUS;
617 static int ath_setkey_tkip(struct ath_common *common, u16 keyix, const u8 *key,
618 struct ath9k_keyval *hk, const u8 *addr,
621 struct ath_hw *ah = common->ah;
625 key_txmic = key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY;
626 key_rxmic = key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY;
630 * Group key installation - only two key cache entries are used
631 * regardless of splitmic capability since group key is only
632 * used either for TX or RX.
635 memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
636 memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_mic));
638 memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
639 memcpy(hk->kv_txmic, key_rxmic, sizeof(hk->kv_mic));
641 return ath9k_hw_set_keycache_entry(ah, keyix, hk, addr);
643 if (!common->splitmic) {
644 /* TX and RX keys share the same key cache entry. */
645 memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
646 memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic));
647 return ath9k_hw_set_keycache_entry(ah, keyix, hk, addr);
650 /* Separate key cache entries for TX and RX */
652 /* TX key goes at first index, RX key at +32. */
653 memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
654 if (!ath9k_hw_set_keycache_entry(ah, keyix, hk, NULL)) {
655 /* TX MIC entry failed. No need to proceed further */
656 ath_print(common, ATH_DBG_FATAL,
657 "Setting TX MIC Key Failed\n");
661 memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
662 /* XXX delete tx key on failure? */
663 return ath9k_hw_set_keycache_entry(ah, keyix + 32, hk, addr);
666 static int ath_reserve_key_cache_slot_tkip(struct ath_common *common)
670 for (i = IEEE80211_WEP_NKID; i < common->keymax / 2; i++) {
671 if (test_bit(i, common->keymap) ||
672 test_bit(i + 64, common->keymap))
673 continue; /* At least one part of TKIP key allocated */
674 if (common->splitmic &&
675 (test_bit(i + 32, common->keymap) ||
676 test_bit(i + 64 + 32, common->keymap)))
677 continue; /* At least one part of TKIP key allocated */
679 /* Found a free slot for a TKIP key */
685 static int ath_reserve_key_cache_slot(struct ath_common *common)
689 /* First, try to find slots that would not be available for TKIP. */
690 if (common->splitmic) {
691 for (i = IEEE80211_WEP_NKID; i < common->keymax / 4; i++) {
692 if (!test_bit(i, common->keymap) &&
693 (test_bit(i + 32, common->keymap) ||
694 test_bit(i + 64, common->keymap) ||
695 test_bit(i + 64 + 32, common->keymap)))
697 if (!test_bit(i + 32, common->keymap) &&
698 (test_bit(i, common->keymap) ||
699 test_bit(i + 64, common->keymap) ||
700 test_bit(i + 64 + 32, common->keymap)))
702 if (!test_bit(i + 64, common->keymap) &&
703 (test_bit(i , common->keymap) ||
704 test_bit(i + 32, common->keymap) ||
705 test_bit(i + 64 + 32, common->keymap)))
707 if (!test_bit(i + 64 + 32, common->keymap) &&
708 (test_bit(i, common->keymap) ||
709 test_bit(i + 32, common->keymap) ||
710 test_bit(i + 64, common->keymap)))
714 for (i = IEEE80211_WEP_NKID; i < common->keymax / 2; i++) {
715 if (!test_bit(i, common->keymap) &&
716 test_bit(i + 64, common->keymap))
718 if (test_bit(i, common->keymap) &&
719 !test_bit(i + 64, common->keymap))
724 /* No partially used TKIP slots, pick any available slot */
725 for (i = IEEE80211_WEP_NKID; i < common->keymax; i++) {
726 /* Do not allow slots that could be needed for TKIP group keys
727 * to be used. This limitation could be removed if we know that
728 * TKIP will not be used. */
729 if (i >= 64 && i < 64 + IEEE80211_WEP_NKID)
731 if (common->splitmic) {
732 if (i >= 32 && i < 32 + IEEE80211_WEP_NKID)
734 if (i >= 64 + 32 && i < 64 + 32 + IEEE80211_WEP_NKID)
738 if (!test_bit(i, common->keymap))
739 return i; /* Found a free slot for a key */
742 /* No free slot found */
746 static int ath_key_config(struct ath_common *common,
747 struct ieee80211_vif *vif,
748 struct ieee80211_sta *sta,
749 struct ieee80211_key_conf *key)
751 struct ath_hw *ah = common->ah;
752 struct ath9k_keyval hk;
753 const u8 *mac = NULL;
757 memset(&hk, 0, sizeof(hk));
761 hk.kv_type = ATH9K_CIPHER_WEP;
764 hk.kv_type = ATH9K_CIPHER_TKIP;
767 hk.kv_type = ATH9K_CIPHER_AES_CCM;
773 hk.kv_len = key->keylen;
774 memcpy(hk.kv_val, key->key, key->keylen);
776 if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
777 /* For now, use the default keys for broadcast keys. This may
778 * need to change with virtual interfaces. */
780 } else if (key->keyidx) {
785 if (vif->type != NL80211_IFTYPE_AP) {
786 /* Only keyidx 0 should be used with unicast key, but
787 * allow this for client mode for now. */
796 if (key->alg == ALG_TKIP)
797 idx = ath_reserve_key_cache_slot_tkip(common);
799 idx = ath_reserve_key_cache_slot(common);
801 return -ENOSPC; /* no free key cache entries */
804 if (key->alg == ALG_TKIP)
805 ret = ath_setkey_tkip(common, idx, key->key, &hk, mac,
806 vif->type == NL80211_IFTYPE_AP);
808 ret = ath9k_hw_set_keycache_entry(ah, idx, &hk, mac);
813 set_bit(idx, common->keymap);
814 if (key->alg == ALG_TKIP) {
815 set_bit(idx + 64, common->keymap);
816 if (common->splitmic) {
817 set_bit(idx + 32, common->keymap);
818 set_bit(idx + 64 + 32, common->keymap);
825 static void ath_key_delete(struct ath_common *common, struct ieee80211_key_conf *key)
827 struct ath_hw *ah = common->ah;
829 ath9k_hw_keyreset(ah, key->hw_key_idx);
830 if (key->hw_key_idx < IEEE80211_WEP_NKID)
833 clear_bit(key->hw_key_idx, common->keymap);
834 if (key->alg != ALG_TKIP)
837 clear_bit(key->hw_key_idx + 64, common->keymap);
838 if (common->splitmic) {
839 ath9k_hw_keyreset(ah, key->hw_key_idx + 32);
840 clear_bit(key->hw_key_idx + 32, common->keymap);
841 clear_bit(key->hw_key_idx + 64 + 32, common->keymap);
845 static void ath9k_bss_assoc_info(struct ath_softc *sc,
846 struct ieee80211_vif *vif,
847 struct ieee80211_bss_conf *bss_conf)
849 struct ath_hw *ah = sc->sc_ah;
850 struct ath_common *common = ath9k_hw_common(ah);
852 if (bss_conf->assoc) {
853 ath_print(common, ATH_DBG_CONFIG,
854 "Bss Info ASSOC %d, bssid: %pM\n",
855 bss_conf->aid, common->curbssid);
857 /* New association, store aid */
858 common->curaid = bss_conf->aid;
859 ath9k_hw_write_associd(ah);
862 * Request a re-configuration of Beacon related timers
863 * on the receipt of the first Beacon frame (i.e.,
864 * after time sync with the AP).
866 sc->ps_flags |= PS_BEACON_SYNC;
868 /* Configure the beacon */
869 ath_beacon_config(sc, vif);
871 /* Reset rssi stats */
872 sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
874 ath_start_ani(common);
876 ath_print(common, ATH_DBG_CONFIG, "Bss Info DISASSOC\n");
879 del_timer_sync(&common->ani.timer);
883 void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
885 struct ath_hw *ah = sc->sc_ah;
886 struct ath_common *common = ath9k_hw_common(ah);
887 struct ieee80211_channel *channel = hw->conf.channel;
891 ath9k_hw_configpcipowersave(ah, 0, 0);
894 ah->curchan = ath_get_curchannel(sc, sc->hw);
896 spin_lock_bh(&sc->sc_resetlock);
897 r = ath9k_hw_reset(ah, ah->curchan, false);
899 ath_print(common, ATH_DBG_FATAL,
900 "Unable to reset channel (%u MHz), "
902 channel->center_freq, r);
904 spin_unlock_bh(&sc->sc_resetlock);
906 ath_update_txpow(sc);
907 if (ath_startrecv(sc) != 0) {
908 ath_print(common, ATH_DBG_FATAL,
909 "Unable to restart recv logic\n");
913 if (sc->sc_flags & SC_OP_BEACONS)
914 ath_beacon_config(sc, NULL); /* restart beacons */
916 /* Re-Enable interrupts */
917 ath9k_hw_set_interrupts(ah, ah->imask);
920 ath9k_hw_cfg_output(ah, ah->led_pin,
921 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
922 ath9k_hw_set_gpio(ah, ah->led_pin, 0);
924 ieee80211_wake_queues(hw);
925 ath9k_ps_restore(sc);
928 void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw)
930 struct ath_hw *ah = sc->sc_ah;
931 struct ieee80211_channel *channel = hw->conf.channel;
935 ieee80211_stop_queues(hw);
938 ath9k_hw_set_gpio(ah, ah->led_pin, 1);
939 ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
941 /* Disable interrupts */
942 ath9k_hw_set_interrupts(ah, 0);
944 ath_drain_all_txq(sc, false); /* clear pending tx frames */
945 ath_stoprecv(sc); /* turn off frame recv */
946 ath_flushrecv(sc); /* flush recv queue */
949 ah->curchan = ath_get_curchannel(sc, hw);
951 spin_lock_bh(&sc->sc_resetlock);
952 r = ath9k_hw_reset(ah, ah->curchan, false);
954 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
955 "Unable to reset channel (%u MHz), "
957 channel->center_freq, r);
959 spin_unlock_bh(&sc->sc_resetlock);
961 ath9k_hw_phy_disable(ah);
962 ath9k_hw_configpcipowersave(ah, 1, 1);
963 ath9k_ps_restore(sc);
964 ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP);
967 int ath_reset(struct ath_softc *sc, bool retry_tx)
969 struct ath_hw *ah = sc->sc_ah;
970 struct ath_common *common = ath9k_hw_common(ah);
971 struct ieee80211_hw *hw = sc->hw;
975 del_timer_sync(&common->ani.timer);
977 ieee80211_stop_queues(hw);
979 ath9k_hw_set_interrupts(ah, 0);
980 ath_drain_all_txq(sc, retry_tx);
984 spin_lock_bh(&sc->sc_resetlock);
985 r = ath9k_hw_reset(ah, sc->sc_ah->curchan, false);
987 ath_print(common, ATH_DBG_FATAL,
988 "Unable to reset hardware; reset status %d\n", r);
989 spin_unlock_bh(&sc->sc_resetlock);
991 if (ath_startrecv(sc) != 0)
992 ath_print(common, ATH_DBG_FATAL,
993 "Unable to start recv logic\n");
996 * We may be doing a reset in response to a request
997 * that changes the channel so update any state that
998 * might change as a result.
1000 ath_cache_conf_rate(sc, &hw->conf);
1002 ath_update_txpow(sc);
1004 if (sc->sc_flags & SC_OP_BEACONS)
1005 ath_beacon_config(sc, NULL); /* restart beacons */
1007 ath9k_hw_set_interrupts(ah, ah->imask);
1011 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
1012 if (ATH_TXQ_SETUP(sc, i)) {
1013 spin_lock_bh(&sc->tx.txq[i].axq_lock);
1014 ath_txq_schedule(sc, &sc->tx.txq[i]);
1015 spin_unlock_bh(&sc->tx.txq[i].axq_lock);
1020 ieee80211_wake_queues(hw);
1023 ath_start_ani(common);
1028 int ath_get_hal_qnum(u16 queue, struct ath_softc *sc)
1034 qnum = sc->tx.hwq_map[ATH9K_WME_AC_VO];
1037 qnum = sc->tx.hwq_map[ATH9K_WME_AC_VI];
1040 qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE];
1043 qnum = sc->tx.hwq_map[ATH9K_WME_AC_BK];
1046 qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE];
1053 int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc)
1058 case ATH9K_WME_AC_VO:
1061 case ATH9K_WME_AC_VI:
1064 case ATH9K_WME_AC_BE:
1067 case ATH9K_WME_AC_BK:
1078 /* XXX: Remove me once we don't depend on ath9k_channel for all
1079 * this redundant data */
1080 void ath9k_update_ichannel(struct ath_softc *sc, struct ieee80211_hw *hw,
1081 struct ath9k_channel *ichan)
1083 struct ieee80211_channel *chan = hw->conf.channel;
1084 struct ieee80211_conf *conf = &hw->conf;
1086 ichan->channel = chan->center_freq;
1089 if (chan->band == IEEE80211_BAND_2GHZ) {
1090 ichan->chanmode = CHANNEL_G;
1091 ichan->channelFlags = CHANNEL_2GHZ | CHANNEL_OFDM | CHANNEL_G;
1093 ichan->chanmode = CHANNEL_A;
1094 ichan->channelFlags = CHANNEL_5GHZ | CHANNEL_OFDM;
1097 if (conf_is_ht(conf))
1098 ichan->chanmode = ath_get_extchanmode(sc, chan,
1099 conf->channel_type);
1102 /**********************/
1103 /* mac80211 callbacks */
1104 /**********************/
1106 static int ath9k_start(struct ieee80211_hw *hw)
1108 struct ath_wiphy *aphy = hw->priv;
1109 struct ath_softc *sc = aphy->sc;
1110 struct ath_hw *ah = sc->sc_ah;
1111 struct ath_common *common = ath9k_hw_common(ah);
1112 struct ieee80211_channel *curchan = hw->conf.channel;
1113 struct ath9k_channel *init_channel;
1116 ath_print(common, ATH_DBG_CONFIG,
1117 "Starting driver with initial channel: %d MHz\n",
1118 curchan->center_freq);
1120 mutex_lock(&sc->mutex);
1122 if (ath9k_wiphy_started(sc)) {
1123 if (sc->chan_idx == curchan->hw_value) {
1125 * Already on the operational channel, the new wiphy
1126 * can be marked active.
1128 aphy->state = ATH_WIPHY_ACTIVE;
1129 ieee80211_wake_queues(hw);
1132 * Another wiphy is on another channel, start the new
1133 * wiphy in paused state.
1135 aphy->state = ATH_WIPHY_PAUSED;
1136 ieee80211_stop_queues(hw);
1138 mutex_unlock(&sc->mutex);
1141 aphy->state = ATH_WIPHY_ACTIVE;
1143 /* setup initial channel */
1145 sc->chan_idx = curchan->hw_value;
1147 init_channel = ath_get_curchannel(sc, hw);
1149 /* Reset SERDES registers */
1150 ath9k_hw_configpcipowersave(ah, 0, 0);
1153 * The basic interface to setting the hardware in a good
1154 * state is ``reset''. On return the hardware is known to
1155 * be powered up and with interrupts disabled. This must
1156 * be followed by initialization of the appropriate bits
1157 * and then setup of the interrupt mask.
1159 spin_lock_bh(&sc->sc_resetlock);
1160 r = ath9k_hw_reset(ah, init_channel, false);
1162 ath_print(common, ATH_DBG_FATAL,
1163 "Unable to reset hardware; reset status %d "
1164 "(freq %u MHz)\n", r,
1165 curchan->center_freq);
1166 spin_unlock_bh(&sc->sc_resetlock);
1169 spin_unlock_bh(&sc->sc_resetlock);
1172 * This is needed only to setup initial state
1173 * but it's best done after a reset.
1175 ath_update_txpow(sc);
1178 * Setup the hardware after reset:
1179 * The receive engine is set going.
1180 * Frame transmit is handled entirely
1181 * in the frame output path; there's nothing to do
1182 * here except setup the interrupt mask.
1184 if (ath_startrecv(sc) != 0) {
1185 ath_print(common, ATH_DBG_FATAL,
1186 "Unable to start recv logic\n");
1191 /* Setup our intr mask. */
1192 ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL |
1193 ATH9K_INT_RXORN | ATH9K_INT_FATAL |
1196 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
1197 ah->imask |= ATH9K_INT_RXHP | ATH9K_INT_RXLP;
1199 ah->imask |= ATH9K_INT_RX;
1201 if (ah->caps.hw_caps & ATH9K_HW_CAP_GTT)
1202 ah->imask |= ATH9K_INT_GTT;
1204 if (ah->caps.hw_caps & ATH9K_HW_CAP_HT)
1205 ah->imask |= ATH9K_INT_CST;
1207 ath_cache_conf_rate(sc, &hw->conf);
1209 sc->sc_flags &= ~SC_OP_INVALID;
1211 /* Disable BMISS interrupt when we're not associated */
1212 ah->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
1213 ath9k_hw_set_interrupts(ah, ah->imask);
1215 ieee80211_wake_queues(hw);
1217 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
1219 if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) &&
1220 !ah->btcoex_hw.enabled) {
1221 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
1222 AR_STOMP_LOW_WLAN_WGHT);
1223 ath9k_hw_btcoex_enable(ah);
1225 if (common->bus_ops->bt_coex_prep)
1226 common->bus_ops->bt_coex_prep(common);
1227 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
1228 ath9k_btcoex_timer_resume(sc);
1232 mutex_unlock(&sc->mutex);
1237 static int ath9k_tx(struct ieee80211_hw *hw,
1238 struct sk_buff *skb)
1240 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1241 struct ath_wiphy *aphy = hw->priv;
1242 struct ath_softc *sc = aphy->sc;
1243 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1244 struct ath_tx_control txctl;
1245 int padpos, padsize;
1246 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1248 if (aphy->state != ATH_WIPHY_ACTIVE && aphy->state != ATH_WIPHY_SCAN) {
1249 ath_print(common, ATH_DBG_XMIT,
1250 "ath9k: %s: TX in unexpected wiphy state "
1251 "%d\n", wiphy_name(hw->wiphy), aphy->state);
1255 if (sc->ps_enabled) {
1257 * mac80211 does not set PM field for normal data frames, so we
1258 * need to update that based on the current PS mode.
1260 if (ieee80211_is_data(hdr->frame_control) &&
1261 !ieee80211_is_nullfunc(hdr->frame_control) &&
1262 !ieee80211_has_pm(hdr->frame_control)) {
1263 ath_print(common, ATH_DBG_PS, "Add PM=1 for a TX frame "
1264 "while in PS mode\n");
1265 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1269 if (unlikely(sc->sc_ah->power_mode != ATH9K_PM_AWAKE)) {
1271 * We are using PS-Poll and mac80211 can request TX while in
1272 * power save mode. Need to wake up hardware for the TX to be
1273 * completed and if needed, also for RX of buffered frames.
1275 ath9k_ps_wakeup(sc);
1276 ath9k_hw_setrxabort(sc->sc_ah, 0);
1277 if (ieee80211_is_pspoll(hdr->frame_control)) {
1278 ath_print(common, ATH_DBG_PS,
1279 "Sending PS-Poll to pick a buffered frame\n");
1280 sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA;
1282 ath_print(common, ATH_DBG_PS,
1283 "Wake up to complete TX\n");
1284 sc->ps_flags |= PS_WAIT_FOR_TX_ACK;
1287 * The actual restore operation will happen only after
1288 * the sc_flags bit is cleared. We are just dropping
1289 * the ps_usecount here.
1291 ath9k_ps_restore(sc);
1294 memset(&txctl, 0, sizeof(struct ath_tx_control));
1297 * As a temporary workaround, assign seq# here; this will likely need
1298 * to be cleaned up to work better with Beacon transmission and virtual
1301 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1302 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
1303 sc->tx.seq_no += 0x10;
1304 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1305 hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
1308 /* Add the padding after the header if this is not already done */
1309 padpos = ath9k_cmn_padpos(hdr->frame_control);
1310 padsize = padpos & 3;
1311 if (padsize && skb->len>padpos) {
1312 if (skb_headroom(skb) < padsize)
1314 skb_push(skb, padsize);
1315 memmove(skb->data, skb->data + padsize, padpos);
1318 /* Check if a tx queue is available */
1320 txctl.txq = ath_test_get_txq(sc, skb);
1324 ath_print(common, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb);
1326 if (ath_tx_start(hw, skb, &txctl) != 0) {
1327 ath_print(common, ATH_DBG_XMIT, "TX failed\n");
1333 dev_kfree_skb_any(skb);
1337 static void ath9k_stop(struct ieee80211_hw *hw)
1339 struct ath_wiphy *aphy = hw->priv;
1340 struct ath_softc *sc = aphy->sc;
1341 struct ath_hw *ah = sc->sc_ah;
1342 struct ath_common *common = ath9k_hw_common(ah);
1344 mutex_lock(&sc->mutex);
1346 aphy->state = ATH_WIPHY_INACTIVE;
1348 cancel_delayed_work_sync(&sc->ath_led_blink_work);
1349 cancel_delayed_work_sync(&sc->tx_complete_work);
1351 if (!sc->num_sec_wiphy) {
1352 cancel_delayed_work_sync(&sc->wiphy_work);
1353 cancel_work_sync(&sc->chan_work);
1356 if (sc->sc_flags & SC_OP_INVALID) {
1357 ath_print(common, ATH_DBG_ANY, "Device not present\n");
1358 mutex_unlock(&sc->mutex);
1362 if (ath9k_wiphy_started(sc)) {
1363 mutex_unlock(&sc->mutex);
1364 return; /* another wiphy still in use */
1367 /* Ensure HW is awake when we try to shut it down. */
1368 ath9k_ps_wakeup(sc);
1370 if (ah->btcoex_hw.enabled) {
1371 ath9k_hw_btcoex_disable(ah);
1372 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
1373 ath9k_btcoex_timer_pause(sc);
1376 /* make sure h/w will not generate any interrupt
1377 * before setting the invalid flag. */
1378 ath9k_hw_set_interrupts(ah, 0);
1380 if (!(sc->sc_flags & SC_OP_INVALID)) {
1381 ath_drain_all_txq(sc, false);
1383 ath9k_hw_phy_disable(ah);
1385 sc->rx.rxlink = NULL;
1387 /* disable HAL and put h/w to sleep */
1388 ath9k_hw_disable(ah);
1389 ath9k_hw_configpcipowersave(ah, 1, 1);
1390 ath9k_ps_restore(sc);
1392 /* Finally, put the chip in FULL SLEEP mode */
1393 ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP);
1395 sc->sc_flags |= SC_OP_INVALID;
1397 mutex_unlock(&sc->mutex);
1399 ath_print(common, ATH_DBG_CONFIG, "Driver halt\n");
1402 static int ath9k_add_interface(struct ieee80211_hw *hw,
1403 struct ieee80211_vif *vif)
1405 struct ath_wiphy *aphy = hw->priv;
1406 struct ath_softc *sc = aphy->sc;
1407 struct ath_hw *ah = sc->sc_ah;
1408 struct ath_common *common = ath9k_hw_common(ah);
1409 struct ath_vif *avp = (void *)vif->drv_priv;
1410 enum nl80211_iftype ic_opmode = NL80211_IFTYPE_UNSPECIFIED;
1413 mutex_lock(&sc->mutex);
1415 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK) &&
1421 switch (vif->type) {
1422 case NL80211_IFTYPE_STATION:
1423 ic_opmode = NL80211_IFTYPE_STATION;
1425 case NL80211_IFTYPE_ADHOC:
1426 case NL80211_IFTYPE_AP:
1427 case NL80211_IFTYPE_MESH_POINT:
1428 if (sc->nbcnvifs >= ATH_BCBUF) {
1432 ic_opmode = vif->type;
1435 ath_print(common, ATH_DBG_FATAL,
1436 "Interface type %d not yet supported\n", vif->type);
1441 ath_print(common, ATH_DBG_CONFIG,
1442 "Attach a VIF of type: %d\n", ic_opmode);
1444 /* Set the VIF opmode */
1445 avp->av_opmode = ic_opmode;
1450 if (ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK)
1451 ath9k_set_bssid_mask(hw);
1454 goto out; /* skip global settings for secondary vif */
1456 if (ic_opmode == NL80211_IFTYPE_AP) {
1457 ath9k_hw_set_tsfadjust(ah, 1);
1458 sc->sc_flags |= SC_OP_TSF_RESET;
1461 /* Set the device opmode */
1462 ah->opmode = ic_opmode;
1465 * Enable MIB interrupts when there are hardware phy counters.
1466 * Note we only do this (at the moment) for station mode.
1468 if ((vif->type == NL80211_IFTYPE_STATION) ||
1469 (vif->type == NL80211_IFTYPE_ADHOC) ||
1470 (vif->type == NL80211_IFTYPE_MESH_POINT)) {
1471 if (ah->config.enable_ani)
1472 ah->imask |= ATH9K_INT_MIB;
1473 ah->imask |= ATH9K_INT_TSFOOR;
1476 ath9k_hw_set_interrupts(ah, ah->imask);
1478 if (vif->type == NL80211_IFTYPE_AP ||
1479 vif->type == NL80211_IFTYPE_ADHOC ||
1480 vif->type == NL80211_IFTYPE_MONITOR)
1481 ath_start_ani(common);
1484 mutex_unlock(&sc->mutex);
1488 static void ath9k_remove_interface(struct ieee80211_hw *hw,
1489 struct ieee80211_vif *vif)
1491 struct ath_wiphy *aphy = hw->priv;
1492 struct ath_softc *sc = aphy->sc;
1493 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1494 struct ath_vif *avp = (void *)vif->drv_priv;
1497 ath_print(common, ATH_DBG_CONFIG, "Detach Interface\n");
1499 mutex_lock(&sc->mutex);
1502 del_timer_sync(&common->ani.timer);
1504 /* Reclaim beacon resources */
1505 if ((sc->sc_ah->opmode == NL80211_IFTYPE_AP) ||
1506 (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) ||
1507 (sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT)) {
1508 ath9k_ps_wakeup(sc);
1509 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
1510 ath9k_ps_restore(sc);
1513 ath_beacon_return(sc, avp);
1514 sc->sc_flags &= ~SC_OP_BEACONS;
1516 for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) {
1517 if (sc->beacon.bslot[i] == vif) {
1518 printk(KERN_DEBUG "%s: vif had allocated beacon "
1519 "slot\n", __func__);
1520 sc->beacon.bslot[i] = NULL;
1521 sc->beacon.bslot_aphy[i] = NULL;
1527 mutex_unlock(&sc->mutex);
1530 void ath9k_enable_ps(struct ath_softc *sc)
1532 struct ath_hw *ah = sc->sc_ah;
1534 sc->ps_enabled = true;
1535 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
1536 if ((ah->imask & ATH9K_INT_TIM_TIMER) == 0) {
1537 ah->imask |= ATH9K_INT_TIM_TIMER;
1538 ath9k_hw_set_interrupts(ah, ah->imask);
1541 ath9k_hw_setrxabort(ah, 1);
1544 static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
1546 struct ath_wiphy *aphy = hw->priv;
1547 struct ath_softc *sc = aphy->sc;
1548 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1549 struct ieee80211_conf *conf = &hw->conf;
1550 struct ath_hw *ah = sc->sc_ah;
1553 mutex_lock(&sc->mutex);
1556 * Leave this as the first check because we need to turn on the
1557 * radio if it was disabled before prior to processing the rest
1558 * of the changes. Likewise we must only disable the radio towards
1561 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1563 bool all_wiphys_idle;
1564 bool idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1566 spin_lock_bh(&sc->wiphy_lock);
1567 all_wiphys_idle = ath9k_all_wiphys_idle(sc);
1568 ath9k_set_wiphy_idle(aphy, idle);
1570 enable_radio = (!idle && all_wiphys_idle);
1573 * After we unlock here its possible another wiphy
1574 * can be re-renabled so to account for that we will
1575 * only disable the radio toward the end of this routine
1576 * if by then all wiphys are still idle.
1578 spin_unlock_bh(&sc->wiphy_lock);
1581 sc->ps_idle = false;
1582 ath_radio_enable(sc, hw);
1583 ath_print(common, ATH_DBG_CONFIG,
1584 "not-idle: enabling radio\n");
1589 * We just prepare to enable PS. We have to wait until our AP has
1590 * ACK'd our null data frame to disable RX otherwise we'll ignore
1591 * those ACKs and end up retransmitting the same null data frames.
1592 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1594 if (changed & IEEE80211_CONF_CHANGE_PS) {
1595 if (conf->flags & IEEE80211_CONF_PS) {
1596 sc->ps_flags |= PS_ENABLED;
1598 * At this point we know hardware has received an ACK
1599 * of a previously sent null data frame.
1601 if ((sc->ps_flags & PS_NULLFUNC_COMPLETED)) {
1602 sc->ps_flags &= ~PS_NULLFUNC_COMPLETED;
1603 ath9k_enable_ps(sc);
1606 sc->ps_enabled = false;
1607 sc->ps_flags &= ~(PS_ENABLED |
1608 PS_NULLFUNC_COMPLETED);
1609 ath9k_setpower(sc, ATH9K_PM_AWAKE);
1610 if (!(ah->caps.hw_caps &
1611 ATH9K_HW_CAP_AUTOSLEEP)) {
1612 ath9k_hw_setrxabort(sc->sc_ah, 0);
1613 sc->ps_flags &= ~(PS_WAIT_FOR_BEACON |
1615 PS_WAIT_FOR_PSPOLL_DATA |
1616 PS_WAIT_FOR_TX_ACK);
1617 if (ah->imask & ATH9K_INT_TIM_TIMER) {
1618 ah->imask &= ~ATH9K_INT_TIM_TIMER;
1619 ath9k_hw_set_interrupts(sc->sc_ah,
1626 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
1627 if (conf->flags & IEEE80211_CONF_MONITOR) {
1628 ath_print(common, ATH_DBG_CONFIG,
1629 "HW opmode set to Monitor mode\n");
1630 sc->sc_ah->opmode = NL80211_IFTYPE_MONITOR;
1634 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1635 struct ieee80211_channel *curchan = hw->conf.channel;
1636 int pos = curchan->hw_value;
1638 aphy->chan_idx = pos;
1639 aphy->chan_is_ht = conf_is_ht(conf);
1641 if (aphy->state == ATH_WIPHY_SCAN ||
1642 aphy->state == ATH_WIPHY_ACTIVE)
1643 ath9k_wiphy_pause_all_forced(sc, aphy);
1646 * Do not change operational channel based on a paused
1649 goto skip_chan_change;
1652 ath_print(common, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
1653 curchan->center_freq);
1655 /* XXX: remove me eventualy */
1656 ath9k_update_ichannel(sc, hw, &sc->sc_ah->channels[pos]);
1658 ath_update_chainmask(sc, conf_is_ht(conf));
1660 if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
1661 ath_print(common, ATH_DBG_FATAL,
1662 "Unable to set channel\n");
1663 mutex_unlock(&sc->mutex);
1669 if (changed & IEEE80211_CONF_CHANGE_POWER) {
1670 sc->config.txpowlimit = 2 * conf->power_level;
1671 ath_update_txpow(sc);
1674 spin_lock_bh(&sc->wiphy_lock);
1675 disable_radio = ath9k_all_wiphys_idle(sc);
1676 spin_unlock_bh(&sc->wiphy_lock);
1678 if (disable_radio) {
1679 ath_print(common, ATH_DBG_CONFIG, "idle: disabling radio\n");
1681 ath_radio_disable(sc, hw);
1684 mutex_unlock(&sc->mutex);
1689 #define SUPPORTED_FILTERS \
1690 (FIF_PROMISC_IN_BSS | \
1695 FIF_BCN_PRBRESP_PROMISC | \
1698 /* FIXME: sc->sc_full_reset ? */
1699 static void ath9k_configure_filter(struct ieee80211_hw *hw,
1700 unsigned int changed_flags,
1701 unsigned int *total_flags,
1704 struct ath_wiphy *aphy = hw->priv;
1705 struct ath_softc *sc = aphy->sc;
1708 changed_flags &= SUPPORTED_FILTERS;
1709 *total_flags &= SUPPORTED_FILTERS;
1711 sc->rx.rxfilter = *total_flags;
1712 ath9k_ps_wakeup(sc);
1713 rfilt = ath_calcrxfilter(sc);
1714 ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
1715 ath9k_ps_restore(sc);
1717 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG,
1718 "Set HW RX filter: 0x%x\n", rfilt);
1721 static int ath9k_sta_add(struct ieee80211_hw *hw,
1722 struct ieee80211_vif *vif,
1723 struct ieee80211_sta *sta)
1725 struct ath_wiphy *aphy = hw->priv;
1726 struct ath_softc *sc = aphy->sc;
1728 ath_node_attach(sc, sta);
1733 static int ath9k_sta_remove(struct ieee80211_hw *hw,
1734 struct ieee80211_vif *vif,
1735 struct ieee80211_sta *sta)
1737 struct ath_wiphy *aphy = hw->priv;
1738 struct ath_softc *sc = aphy->sc;
1740 ath_node_detach(sc, sta);
1745 static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue,
1746 const struct ieee80211_tx_queue_params *params)
1748 struct ath_wiphy *aphy = hw->priv;
1749 struct ath_softc *sc = aphy->sc;
1750 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1751 struct ath9k_tx_queue_info qi;
1754 if (queue >= WME_NUM_AC)
1757 mutex_lock(&sc->mutex);
1759 memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
1761 qi.tqi_aifs = params->aifs;
1762 qi.tqi_cwmin = params->cw_min;
1763 qi.tqi_cwmax = params->cw_max;
1764 qi.tqi_burstTime = params->txop;
1765 qnum = ath_get_hal_qnum(queue, sc);
1767 ath_print(common, ATH_DBG_CONFIG,
1768 "Configure tx [queue/halq] [%d/%d], "
1769 "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1770 queue, qnum, params->aifs, params->cw_min,
1771 params->cw_max, params->txop);
1773 ret = ath_txq_update(sc, qnum, &qi);
1775 ath_print(common, ATH_DBG_FATAL, "TXQ Update failed\n");
1777 if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC)
1778 if ((qnum == sc->tx.hwq_map[ATH9K_WME_AC_BE]) && !ret)
1779 ath_beaconq_config(sc);
1781 mutex_unlock(&sc->mutex);
1786 static int ath9k_set_key(struct ieee80211_hw *hw,
1787 enum set_key_cmd cmd,
1788 struct ieee80211_vif *vif,
1789 struct ieee80211_sta *sta,
1790 struct ieee80211_key_conf *key)
1792 struct ath_wiphy *aphy = hw->priv;
1793 struct ath_softc *sc = aphy->sc;
1794 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
1797 if (modparam_nohwcrypt)
1800 mutex_lock(&sc->mutex);
1801 ath9k_ps_wakeup(sc);
1802 ath_print(common, ATH_DBG_CONFIG, "Set HW Key\n");
1806 ret = ath_key_config(common, vif, sta, key);
1808 key->hw_key_idx = ret;
1809 /* push IV and Michael MIC generation to stack */
1810 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1811 if (key->alg == ALG_TKIP)
1812 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1813 if (sc->sc_ah->sw_mgmt_crypto && key->alg == ALG_CCMP)
1814 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
1819 ath_key_delete(common, key);
1825 ath9k_ps_restore(sc);
1826 mutex_unlock(&sc->mutex);
1831 static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
1832 struct ieee80211_vif *vif,
1833 struct ieee80211_bss_conf *bss_conf,
1836 struct ath_wiphy *aphy = hw->priv;
1837 struct ath_softc *sc = aphy->sc;
1838 struct ath_hw *ah = sc->sc_ah;
1839 struct ath_common *common = ath9k_hw_common(ah);
1840 struct ath_vif *avp = (void *)vif->drv_priv;
1844 mutex_lock(&sc->mutex);
1846 if (changed & BSS_CHANGED_BSSID) {
1848 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1849 memcpy(avp->bssid, bss_conf->bssid, ETH_ALEN);
1851 ath9k_hw_write_associd(ah);
1853 /* Set aggregation protection mode parameters */
1854 sc->config.ath_aggr_prot = 0;
1856 /* Only legacy IBSS for now */
1857 if (vif->type == NL80211_IFTYPE_ADHOC)
1858 ath_update_chainmask(sc, 0);
1860 ath_print(common, ATH_DBG_CONFIG,
1861 "BSSID: %pM aid: 0x%x\n",
1862 common->curbssid, common->curaid);
1864 /* need to reconfigure the beacon */
1865 sc->sc_flags &= ~SC_OP_BEACONS ;
1868 /* Enable transmission of beacons (AP, IBSS, MESH) */
1869 if ((changed & BSS_CHANGED_BEACON) ||
1870 ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon)) {
1871 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
1872 error = ath_beacon_alloc(aphy, vif);
1874 ath_beacon_config(sc, vif);
1877 if (changed & BSS_CHANGED_ERP_SLOT) {
1878 if (bss_conf->use_short_slot)
1882 if (vif->type == NL80211_IFTYPE_AP) {
1884 * Defer update, so that connected stations can adjust
1885 * their settings at the same time.
1886 * See beacon.c for more details
1888 sc->beacon.slottime = slottime;
1889 sc->beacon.updateslot = UPDATE;
1891 ah->slottime = slottime;
1892 ath9k_hw_init_global_settings(ah);
1896 /* Disable transmission of beacons */
1897 if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon)
1898 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
1900 if (changed & BSS_CHANGED_BEACON_INT) {
1901 sc->beacon_interval = bss_conf->beacon_int;
1903 * In case of AP mode, the HW TSF has to be reset
1904 * when the beacon interval changes.
1906 if (vif->type == NL80211_IFTYPE_AP) {
1907 sc->sc_flags |= SC_OP_TSF_RESET;
1908 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
1909 error = ath_beacon_alloc(aphy, vif);
1911 ath_beacon_config(sc, vif);
1913 ath_beacon_config(sc, vif);
1917 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1918 ath_print(common, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n",
1919 bss_conf->use_short_preamble);
1920 if (bss_conf->use_short_preamble)
1921 sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
1923 sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT;
1926 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1927 ath_print(common, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n",
1928 bss_conf->use_cts_prot);
1929 if (bss_conf->use_cts_prot &&
1930 hw->conf.channel->band != IEEE80211_BAND_5GHZ)
1931 sc->sc_flags |= SC_OP_PROTECT_ENABLE;
1933 sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
1936 if (changed & BSS_CHANGED_ASSOC) {
1937 ath_print(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
1939 ath9k_bss_assoc_info(sc, vif, bss_conf);
1942 mutex_unlock(&sc->mutex);
1945 static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
1948 struct ath_wiphy *aphy = hw->priv;
1949 struct ath_softc *sc = aphy->sc;
1951 mutex_lock(&sc->mutex);
1952 tsf = ath9k_hw_gettsf64(sc->sc_ah);
1953 mutex_unlock(&sc->mutex);
1958 static void ath9k_set_tsf(struct ieee80211_hw *hw, u64 tsf)
1960 struct ath_wiphy *aphy = hw->priv;
1961 struct ath_softc *sc = aphy->sc;
1963 mutex_lock(&sc->mutex);
1964 ath9k_hw_settsf64(sc->sc_ah, tsf);
1965 mutex_unlock(&sc->mutex);
1968 static void ath9k_reset_tsf(struct ieee80211_hw *hw)
1970 struct ath_wiphy *aphy = hw->priv;
1971 struct ath_softc *sc = aphy->sc;
1973 mutex_lock(&sc->mutex);
1975 ath9k_ps_wakeup(sc);
1976 ath9k_hw_reset_tsf(sc->sc_ah);
1977 ath9k_ps_restore(sc);
1979 mutex_unlock(&sc->mutex);
1982 static int ath9k_ampdu_action(struct ieee80211_hw *hw,
1983 struct ieee80211_vif *vif,
1984 enum ieee80211_ampdu_mlme_action action,
1985 struct ieee80211_sta *sta,
1988 struct ath_wiphy *aphy = hw->priv;
1989 struct ath_softc *sc = aphy->sc;
1993 case IEEE80211_AMPDU_RX_START:
1994 if (!(sc->sc_flags & SC_OP_RXAGGR))
1997 case IEEE80211_AMPDU_RX_STOP:
1999 case IEEE80211_AMPDU_TX_START:
2000 ath9k_ps_wakeup(sc);
2001 ath_tx_aggr_start(sc, sta, tid, ssn);
2002 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2003 ath9k_ps_restore(sc);
2005 case IEEE80211_AMPDU_TX_STOP:
2006 ath9k_ps_wakeup(sc);
2007 ath_tx_aggr_stop(sc, sta, tid);
2008 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2009 ath9k_ps_restore(sc);
2011 case IEEE80211_AMPDU_TX_OPERATIONAL:
2012 ath9k_ps_wakeup(sc);
2013 ath_tx_aggr_resume(sc, sta, tid);
2014 ath9k_ps_restore(sc);
2017 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
2018 "Unknown AMPDU action\n");
2024 static void ath9k_sw_scan_start(struct ieee80211_hw *hw)
2026 struct ath_wiphy *aphy = hw->priv;
2027 struct ath_softc *sc = aphy->sc;
2028 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
2030 mutex_lock(&sc->mutex);
2031 if (ath9k_wiphy_scanning(sc)) {
2032 printk(KERN_DEBUG "ath9k: Two wiphys trying to scan at the "
2035 * Do not allow the concurrent scanning state for now. This
2036 * could be improved with scanning control moved into ath9k.
2038 mutex_unlock(&sc->mutex);
2042 aphy->state = ATH_WIPHY_SCAN;
2043 ath9k_wiphy_pause_all_forced(sc, aphy);
2044 sc->sc_flags |= SC_OP_SCANNING;
2045 del_timer_sync(&common->ani.timer);
2046 cancel_delayed_work_sync(&sc->tx_complete_work);
2047 mutex_unlock(&sc->mutex);
2050 static void ath9k_sw_scan_complete(struct ieee80211_hw *hw)
2052 struct ath_wiphy *aphy = hw->priv;
2053 struct ath_softc *sc = aphy->sc;
2054 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
2056 mutex_lock(&sc->mutex);
2057 aphy->state = ATH_WIPHY_ACTIVE;
2058 sc->sc_flags &= ~SC_OP_SCANNING;
2059 sc->sc_flags |= SC_OP_FULL_RESET;
2060 ath_start_ani(common);
2061 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
2062 ath_beacon_config(sc, NULL);
2063 mutex_unlock(&sc->mutex);
2066 static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
2068 struct ath_wiphy *aphy = hw->priv;
2069 struct ath_softc *sc = aphy->sc;
2070 struct ath_hw *ah = sc->sc_ah;
2072 mutex_lock(&sc->mutex);
2073 ah->coverage_class = coverage_class;
2074 ath9k_hw_init_global_settings(ah);
2075 mutex_unlock(&sc->mutex);
2078 struct ieee80211_ops ath9k_ops = {
2080 .start = ath9k_start,
2082 .add_interface = ath9k_add_interface,
2083 .remove_interface = ath9k_remove_interface,
2084 .config = ath9k_config,
2085 .configure_filter = ath9k_configure_filter,
2086 .sta_add = ath9k_sta_add,
2087 .sta_remove = ath9k_sta_remove,
2088 .conf_tx = ath9k_conf_tx,
2089 .bss_info_changed = ath9k_bss_info_changed,
2090 .set_key = ath9k_set_key,
2091 .get_tsf = ath9k_get_tsf,
2092 .set_tsf = ath9k_set_tsf,
2093 .reset_tsf = ath9k_reset_tsf,
2094 .ampdu_action = ath9k_ampdu_action,
2095 .sw_scan_start = ath9k_sw_scan_start,
2096 .sw_scan_complete = ath9k_sw_scan_complete,
2097 .rfkill_poll = ath9k_rfkill_poll_state,
2098 .set_coverage_class = ath9k_set_coverage_class,