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 char *dev_info = "ath9k";
23 MODULE_AUTHOR("Atheros Communications");
24 MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
25 MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
26 MODULE_LICENSE("Dual BSD/GPL");
28 static int modparam_nohwcrypt;
29 module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
30 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption");
32 static unsigned int ath9k_debug = ATH_DBG_DEFAULT;
33 module_param_named(debug, ath9k_debug, uint, 0);
34 MODULE_PARM_DESC(debug, "Debugging mask");
36 /* We use the hw_value as an index into our private channel structure */
38 #define CHAN2G(_freq, _idx) { \
39 .center_freq = (_freq), \
44 #define CHAN5G(_freq, _idx) { \
45 .band = IEEE80211_BAND_5GHZ, \
46 .center_freq = (_freq), \
51 /* Some 2 GHz radios are actually tunable on 2312-2732
52 * on 5 MHz steps, we support the channels which we know
53 * we have calibration data for all cards though to make
55 static struct ieee80211_channel ath9k_2ghz_chantable[] = {
56 CHAN2G(2412, 0), /* Channel 1 */
57 CHAN2G(2417, 1), /* Channel 2 */
58 CHAN2G(2422, 2), /* Channel 3 */
59 CHAN2G(2427, 3), /* Channel 4 */
60 CHAN2G(2432, 4), /* Channel 5 */
61 CHAN2G(2437, 5), /* Channel 6 */
62 CHAN2G(2442, 6), /* Channel 7 */
63 CHAN2G(2447, 7), /* Channel 8 */
64 CHAN2G(2452, 8), /* Channel 9 */
65 CHAN2G(2457, 9), /* Channel 10 */
66 CHAN2G(2462, 10), /* Channel 11 */
67 CHAN2G(2467, 11), /* Channel 12 */
68 CHAN2G(2472, 12), /* Channel 13 */
69 CHAN2G(2484, 13), /* Channel 14 */
72 /* Some 5 GHz radios are actually tunable on XXXX-YYYY
73 * on 5 MHz steps, we support the channels which we know
74 * we have calibration data for all cards though to make
76 static struct ieee80211_channel ath9k_5ghz_chantable[] = {
77 /* _We_ call this UNII 1 */
78 CHAN5G(5180, 14), /* Channel 36 */
79 CHAN5G(5200, 15), /* Channel 40 */
80 CHAN5G(5220, 16), /* Channel 44 */
81 CHAN5G(5240, 17), /* Channel 48 */
82 /* _We_ call this UNII 2 */
83 CHAN5G(5260, 18), /* Channel 52 */
84 CHAN5G(5280, 19), /* Channel 56 */
85 CHAN5G(5300, 20), /* Channel 60 */
86 CHAN5G(5320, 21), /* Channel 64 */
87 /* _We_ call this "Middle band" */
88 CHAN5G(5500, 22), /* Channel 100 */
89 CHAN5G(5520, 23), /* Channel 104 */
90 CHAN5G(5540, 24), /* Channel 108 */
91 CHAN5G(5560, 25), /* Channel 112 */
92 CHAN5G(5580, 26), /* Channel 116 */
93 CHAN5G(5600, 27), /* Channel 120 */
94 CHAN5G(5620, 28), /* Channel 124 */
95 CHAN5G(5640, 29), /* Channel 128 */
96 CHAN5G(5660, 30), /* Channel 132 */
97 CHAN5G(5680, 31), /* Channel 136 */
98 CHAN5G(5700, 32), /* Channel 140 */
99 /* _We_ call this UNII 3 */
100 CHAN5G(5745, 33), /* Channel 149 */
101 CHAN5G(5765, 34), /* Channel 153 */
102 CHAN5G(5785, 35), /* Channel 157 */
103 CHAN5G(5805, 36), /* Channel 161 */
104 CHAN5G(5825, 37), /* Channel 165 */
107 /* Atheros hardware rate code addition for short premble */
108 #define SHPCHECK(__hw_rate, __flags) \
109 ((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0x04 ) : 0)
111 #define RATE(_bitrate, _hw_rate, _flags) { \
112 .bitrate = (_bitrate), \
114 .hw_value = (_hw_rate), \
115 .hw_value_short = (SHPCHECK(_hw_rate, _flags)) \
118 static struct ieee80211_rate ath9k_legacy_rates[] = {
120 RATE(20, 0x1a, IEEE80211_RATE_SHORT_PREAMBLE),
121 RATE(55, 0x19, IEEE80211_RATE_SHORT_PREAMBLE),
122 RATE(110, 0x18, IEEE80211_RATE_SHORT_PREAMBLE),
133 static void ath_cache_conf_rate(struct ath_softc *sc,
134 struct ieee80211_conf *conf)
136 switch (conf->channel->band) {
137 case IEEE80211_BAND_2GHZ:
138 if (conf_is_ht20(conf))
139 sc->cur_rate_mode = ATH9K_MODE_11NG_HT20;
140 else if (conf_is_ht40_minus(conf))
141 sc->cur_rate_mode = ATH9K_MODE_11NG_HT40MINUS;
142 else if (conf_is_ht40_plus(conf))
143 sc->cur_rate_mode = ATH9K_MODE_11NG_HT40PLUS;
145 sc->cur_rate_mode = ATH9K_MODE_11G;
147 case IEEE80211_BAND_5GHZ:
148 if (conf_is_ht20(conf))
149 sc->cur_rate_mode = ATH9K_MODE_11NA_HT20;
150 else if (conf_is_ht40_minus(conf))
151 sc->cur_rate_mode = ATH9K_MODE_11NA_HT40MINUS;
152 else if (conf_is_ht40_plus(conf))
153 sc->cur_rate_mode = ATH9K_MODE_11NA_HT40PLUS;
155 sc->cur_rate_mode = ATH9K_MODE_11A;
163 static void ath_update_txpow(struct ath_softc *sc)
165 struct ath_hw *ah = sc->sc_ah;
168 if (sc->curtxpow != sc->config.txpowlimit) {
169 ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit);
170 /* read back in case value is clamped */
171 ath9k_hw_getcapability(ah, ATH9K_CAP_TXPOW, 1, &txpow);
172 sc->curtxpow = txpow;
176 static u8 parse_mpdudensity(u8 mpdudensity)
179 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
180 * 0 for no restriction
189 switch (mpdudensity) {
195 /* Our lower layer calculations limit our precision to
211 static struct ath9k_channel *ath_get_curchannel(struct ath_softc *sc,
212 struct ieee80211_hw *hw)
214 struct ieee80211_channel *curchan = hw->conf.channel;
215 struct ath9k_channel *channel;
218 chan_idx = curchan->hw_value;
219 channel = &sc->sc_ah->channels[chan_idx];
220 ath9k_update_ichannel(sc, hw, channel);
224 static bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode)
229 spin_lock_irqsave(&sc->sc_pm_lock, flags);
230 ret = ath9k_hw_setpower(sc->sc_ah, mode);
231 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
236 void ath9k_ps_wakeup(struct ath_softc *sc)
240 spin_lock_irqsave(&sc->sc_pm_lock, flags);
241 if (++sc->ps_usecount != 1)
244 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
247 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
250 void ath9k_ps_restore(struct ath_softc *sc)
254 spin_lock_irqsave(&sc->sc_pm_lock, flags);
255 if (--sc->ps_usecount != 0)
258 if (sc->ps_enabled &&
259 !(sc->sc_flags & (SC_OP_WAIT_FOR_BEACON |
261 SC_OP_WAIT_FOR_PSPOLL_DATA |
262 SC_OP_WAIT_FOR_TX_ACK)))
263 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP);
266 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
270 * Set/change channels. If the channel is really being changed, it's done
271 * by reseting the chip. To accomplish this we must first cleanup any pending
272 * DMA, then restart stuff.
274 int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
275 struct ath9k_channel *hchan)
277 struct ath_hw *ah = sc->sc_ah;
278 struct ath_common *common = ath9k_hw_common(ah);
279 struct ieee80211_conf *conf = &common->hw->conf;
280 bool fastcc = true, stopped;
281 struct ieee80211_channel *channel = hw->conf.channel;
284 if (sc->sc_flags & SC_OP_INVALID)
290 * This is only performed if the channel settings have
293 * To switch channels clear any pending DMA operations;
294 * wait long enough for the RX fifo to drain, reset the
295 * hardware at the new frequency, and then re-enable
296 * the relevant bits of the h/w.
298 ath9k_hw_set_interrupts(ah, 0);
299 ath_drain_all_txq(sc, false);
300 stopped = ath_stoprecv(sc);
302 /* XXX: do not flush receive queue here. We don't want
303 * to flush data frames already in queue because of
304 * changing channel. */
306 if (!stopped || (sc->sc_flags & SC_OP_FULL_RESET))
309 ath_print(common, ATH_DBG_CONFIG,
310 "(%u MHz) -> (%u MHz), conf_is_ht40: %d\n",
311 sc->sc_ah->curchan->channel,
312 channel->center_freq, conf_is_ht40(conf));
314 spin_lock_bh(&sc->sc_resetlock);
316 r = ath9k_hw_reset(ah, hchan, fastcc);
318 ath_print(common, ATH_DBG_FATAL,
319 "Unable to reset channel (%u Mhz) "
321 channel->center_freq, r);
322 spin_unlock_bh(&sc->sc_resetlock);
325 spin_unlock_bh(&sc->sc_resetlock);
327 sc->sc_flags &= ~SC_OP_FULL_RESET;
329 if (ath_startrecv(sc) != 0) {
330 ath_print(common, ATH_DBG_FATAL,
331 "Unable to restart recv logic\n");
336 ath_cache_conf_rate(sc, &hw->conf);
337 ath_update_txpow(sc);
338 ath9k_hw_set_interrupts(ah, sc->imask);
341 ath9k_ps_restore(sc);
346 * This routine performs the periodic noise floor calibration function
347 * that is used to adjust and optimize the chip performance. This
348 * takes environmental changes (location, temperature) into account.
349 * When the task is complete, it reschedules itself depending on the
350 * appropriate interval that was calculated.
352 static void ath_ani_calibrate(unsigned long data)
354 struct ath_softc *sc = (struct ath_softc *)data;
355 struct ath_hw *ah = sc->sc_ah;
356 struct ath_common *common = ath9k_hw_common(ah);
357 bool longcal = false;
358 bool shortcal = false;
359 bool aniflag = false;
360 unsigned int timestamp = jiffies_to_msecs(jiffies);
361 u32 cal_interval, short_cal_interval;
363 short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ?
364 ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL;
366 /* Only calibrate if awake */
367 if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE)
372 /* Long calibration runs independently of short calibration. */
373 if ((timestamp - common->ani.longcal_timer) >= ATH_LONG_CALINTERVAL) {
375 ath_print(common, ATH_DBG_ANI, "longcal @%lu\n", jiffies);
376 common->ani.longcal_timer = timestamp;
379 /* Short calibration applies only while caldone is false */
380 if (!common->ani.caldone) {
381 if ((timestamp - common->ani.shortcal_timer) >= short_cal_interval) {
383 ath_print(common, ATH_DBG_ANI,
384 "shortcal @%lu\n", jiffies);
385 common->ani.shortcal_timer = timestamp;
386 common->ani.resetcal_timer = timestamp;
389 if ((timestamp - common->ani.resetcal_timer) >=
390 ATH_RESTART_CALINTERVAL) {
391 common->ani.caldone = ath9k_hw_reset_calvalid(ah);
392 if (common->ani.caldone)
393 common->ani.resetcal_timer = timestamp;
397 /* Verify whether we must check ANI */
398 if ((timestamp - common->ani.checkani_timer) >= ATH_ANI_POLLINTERVAL) {
400 common->ani.checkani_timer = timestamp;
403 /* Skip all processing if there's nothing to do. */
404 if (longcal || shortcal || aniflag) {
405 /* Call ANI routine if necessary */
407 ath9k_hw_ani_monitor(ah, ah->curchan);
409 /* Perform calibration if necessary */
410 if (longcal || shortcal) {
411 common->ani.caldone =
412 ath9k_hw_calibrate(ah,
414 common->rx_chainmask,
418 common->ani.noise_floor = ath9k_hw_getchan_noise(ah,
421 ath_print(common, ATH_DBG_ANI,
422 " calibrate chan %u/%x nf: %d\n",
423 ah->curchan->channel,
424 ah->curchan->channelFlags,
425 common->ani.noise_floor);
429 ath9k_ps_restore(sc);
433 * Set timer interval based on previous results.
434 * The interval must be the shortest necessary to satisfy ANI,
435 * short calibration and long calibration.
437 cal_interval = ATH_LONG_CALINTERVAL;
438 if (sc->sc_ah->config.enable_ani)
439 cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL);
440 if (!common->ani.caldone)
441 cal_interval = min(cal_interval, (u32)short_cal_interval);
443 mod_timer(&common->ani.timer, jiffies + msecs_to_jiffies(cal_interval));
446 static void ath_start_ani(struct ath_common *common)
448 unsigned long timestamp = jiffies_to_msecs(jiffies);
450 common->ani.longcal_timer = timestamp;
451 common->ani.shortcal_timer = timestamp;
452 common->ani.checkani_timer = timestamp;
454 mod_timer(&common->ani.timer,
455 jiffies + msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
459 * Update tx/rx chainmask. For legacy association,
460 * hard code chainmask to 1x1, for 11n association, use
461 * the chainmask configuration, for bt coexistence, use
462 * the chainmask configuration even in legacy mode.
464 void ath_update_chainmask(struct ath_softc *sc, int is_ht)
466 struct ath_hw *ah = sc->sc_ah;
467 struct ath_common *common = ath9k_hw_common(ah);
469 if ((sc->sc_flags & SC_OP_SCANNING) || is_ht ||
470 (ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE)) {
471 common->tx_chainmask = ah->caps.tx_chainmask;
472 common->rx_chainmask = ah->caps.rx_chainmask;
474 common->tx_chainmask = 1;
475 common->rx_chainmask = 1;
478 ath_print(common, ATH_DBG_CONFIG,
479 "tx chmask: %d, rx chmask: %d\n",
480 common->tx_chainmask,
481 common->rx_chainmask);
484 static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta)
488 an = (struct ath_node *)sta->drv_priv;
490 if (sc->sc_flags & SC_OP_TXAGGR) {
491 ath_tx_node_init(sc, an);
492 an->maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
493 sta->ht_cap.ampdu_factor);
494 an->mpdudensity = parse_mpdudensity(sta->ht_cap.ampdu_density);
495 an->last_rssi = ATH_RSSI_DUMMY_MARKER;
499 static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
501 struct ath_node *an = (struct ath_node *)sta->drv_priv;
503 if (sc->sc_flags & SC_OP_TXAGGR)
504 ath_tx_node_cleanup(sc, an);
507 static void ath9k_tasklet(unsigned long data)
509 struct ath_softc *sc = (struct ath_softc *)data;
510 struct ath_hw *ah = sc->sc_ah;
511 struct ath_common *common = ath9k_hw_common(ah);
513 u32 status = sc->intrstatus;
517 if (status & ATH9K_INT_FATAL) {
518 ath_reset(sc, false);
519 ath9k_ps_restore(sc);
523 if (status & (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN)) {
524 spin_lock_bh(&sc->rx.rxflushlock);
525 ath_rx_tasklet(sc, 0);
526 spin_unlock_bh(&sc->rx.rxflushlock);
529 if (status & ATH9K_INT_TX)
532 if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
534 * TSF sync does not look correct; remain awake to sync with
537 ath_print(common, ATH_DBG_PS,
538 "TSFOOR - Sync with next Beacon\n");
539 sc->sc_flags |= SC_OP_WAIT_FOR_BEACON | SC_OP_BEACON_SYNC;
542 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
543 if (status & ATH9K_INT_GENTIMER)
544 ath_gen_timer_isr(sc->sc_ah);
546 /* re-enable hardware interrupt */
547 ath9k_hw_set_interrupts(ah, sc->imask);
548 ath9k_ps_restore(sc);
551 irqreturn_t ath_isr(int irq, void *dev)
553 #define SCHED_INTR ( \
564 struct ath_softc *sc = dev;
565 struct ath_hw *ah = sc->sc_ah;
566 enum ath9k_int status;
570 * The hardware is not ready/present, don't
571 * touch anything. Note this can happen early
572 * on if the IRQ is shared.
574 if (sc->sc_flags & SC_OP_INVALID)
578 /* shared irq, not for us */
580 if (!ath9k_hw_intrpend(ah))
584 * Figure out the reason(s) for the interrupt. Note
585 * that the hal returns a pseudo-ISR that may include
586 * bits we haven't explicitly enabled so we mask the
587 * value to insure we only process bits we requested.
589 ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */
590 status &= sc->imask; /* discard unasked-for bits */
593 * If there are no status bits set, then this interrupt was not
594 * for me (should have been caught above).
599 /* Cache the status */
600 sc->intrstatus = status;
602 if (status & SCHED_INTR)
606 * If a FATAL or RXORN interrupt is received, we have to reset the
609 if (status & (ATH9K_INT_FATAL | ATH9K_INT_RXORN))
612 if (status & ATH9K_INT_SWBA)
613 tasklet_schedule(&sc->bcon_tasklet);
615 if (status & ATH9K_INT_TXURN)
616 ath9k_hw_updatetxtriglevel(ah, true);
618 if (status & ATH9K_INT_MIB) {
620 * Disable interrupts until we service the MIB
621 * interrupt; otherwise it will continue to
624 ath9k_hw_set_interrupts(ah, 0);
626 * Let the hal handle the event. We assume
627 * it will clear whatever condition caused
630 ath9k_hw_procmibevent(ah);
631 ath9k_hw_set_interrupts(ah, sc->imask);
634 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
635 if (status & ATH9K_INT_TIM_TIMER) {
636 /* Clear RxAbort bit so that we can
638 ath9k_setpower(sc, ATH9K_PM_AWAKE);
639 ath9k_hw_setrxabort(sc->sc_ah, 0);
640 sc->sc_flags |= SC_OP_WAIT_FOR_BEACON;
645 ath_debug_stat_interrupt(sc, status);
648 /* turn off every interrupt except SWBA */
649 ath9k_hw_set_interrupts(ah, (sc->imask & ATH9K_INT_SWBA));
650 tasklet_schedule(&sc->intr_tq);
658 static u32 ath_get_extchanmode(struct ath_softc *sc,
659 struct ieee80211_channel *chan,
660 enum nl80211_channel_type channel_type)
664 switch (chan->band) {
665 case IEEE80211_BAND_2GHZ:
666 switch(channel_type) {
667 case NL80211_CHAN_NO_HT:
668 case NL80211_CHAN_HT20:
669 chanmode = CHANNEL_G_HT20;
671 case NL80211_CHAN_HT40PLUS:
672 chanmode = CHANNEL_G_HT40PLUS;
674 case NL80211_CHAN_HT40MINUS:
675 chanmode = CHANNEL_G_HT40MINUS;
679 case IEEE80211_BAND_5GHZ:
680 switch(channel_type) {
681 case NL80211_CHAN_NO_HT:
682 case NL80211_CHAN_HT20:
683 chanmode = CHANNEL_A_HT20;
685 case NL80211_CHAN_HT40PLUS:
686 chanmode = CHANNEL_A_HT40PLUS;
688 case NL80211_CHAN_HT40MINUS:
689 chanmode = CHANNEL_A_HT40MINUS;
700 static int ath_setkey_tkip(struct ath_common *common, u16 keyix, const u8 *key,
701 struct ath9k_keyval *hk, const u8 *addr,
704 struct ath_hw *ah = common->ah;
708 key_txmic = key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY;
709 key_rxmic = key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY;
713 * Group key installation - only two key cache entries are used
714 * regardless of splitmic capability since group key is only
715 * used either for TX or RX.
718 memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
719 memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_mic));
721 memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
722 memcpy(hk->kv_txmic, key_rxmic, sizeof(hk->kv_mic));
724 return ath9k_hw_set_keycache_entry(ah, keyix, hk, addr);
726 if (!common->splitmic) {
727 /* TX and RX keys share the same key cache entry. */
728 memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
729 memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic));
730 return ath9k_hw_set_keycache_entry(ah, keyix, hk, addr);
733 /* Separate key cache entries for TX and RX */
735 /* TX key goes at first index, RX key at +32. */
736 memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
737 if (!ath9k_hw_set_keycache_entry(ah, keyix, hk, NULL)) {
738 /* TX MIC entry failed. No need to proceed further */
739 ath_print(common, ATH_DBG_FATAL,
740 "Setting TX MIC Key Failed\n");
744 memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
745 /* XXX delete tx key on failure? */
746 return ath9k_hw_set_keycache_entry(ah, keyix + 32, hk, addr);
749 static int ath_reserve_key_cache_slot_tkip(struct ath_common *common)
753 for (i = IEEE80211_WEP_NKID; i < common->keymax / 2; i++) {
754 if (test_bit(i, common->keymap) ||
755 test_bit(i + 64, common->keymap))
756 continue; /* At least one part of TKIP key allocated */
757 if (common->splitmic &&
758 (test_bit(i + 32, common->keymap) ||
759 test_bit(i + 64 + 32, common->keymap)))
760 continue; /* At least one part of TKIP key allocated */
762 /* Found a free slot for a TKIP key */
768 static int ath_reserve_key_cache_slot(struct ath_common *common)
772 /* First, try to find slots that would not be available for TKIP. */
773 if (common->splitmic) {
774 for (i = IEEE80211_WEP_NKID; i < common->keymax / 4; i++) {
775 if (!test_bit(i, common->keymap) &&
776 (test_bit(i + 32, common->keymap) ||
777 test_bit(i + 64, common->keymap) ||
778 test_bit(i + 64 + 32, common->keymap)))
780 if (!test_bit(i + 32, common->keymap) &&
781 (test_bit(i, common->keymap) ||
782 test_bit(i + 64, common->keymap) ||
783 test_bit(i + 64 + 32, common->keymap)))
785 if (!test_bit(i + 64, common->keymap) &&
786 (test_bit(i , common->keymap) ||
787 test_bit(i + 32, common->keymap) ||
788 test_bit(i + 64 + 32, common->keymap)))
790 if (!test_bit(i + 64 + 32, common->keymap) &&
791 (test_bit(i, common->keymap) ||
792 test_bit(i + 32, common->keymap) ||
793 test_bit(i + 64, common->keymap)))
797 for (i = IEEE80211_WEP_NKID; i < common->keymax / 2; i++) {
798 if (!test_bit(i, common->keymap) &&
799 test_bit(i + 64, common->keymap))
801 if (test_bit(i, common->keymap) &&
802 !test_bit(i + 64, common->keymap))
807 /* No partially used TKIP slots, pick any available slot */
808 for (i = IEEE80211_WEP_NKID; i < common->keymax; i++) {
809 /* Do not allow slots that could be needed for TKIP group keys
810 * to be used. This limitation could be removed if we know that
811 * TKIP will not be used. */
812 if (i >= 64 && i < 64 + IEEE80211_WEP_NKID)
814 if (common->splitmic) {
815 if (i >= 32 && i < 32 + IEEE80211_WEP_NKID)
817 if (i >= 64 + 32 && i < 64 + 32 + IEEE80211_WEP_NKID)
821 if (!test_bit(i, common->keymap))
822 return i; /* Found a free slot for a key */
825 /* No free slot found */
829 static int ath_key_config(struct ath_common *common,
830 struct ieee80211_vif *vif,
831 struct ieee80211_sta *sta,
832 struct ieee80211_key_conf *key)
834 struct ath_hw *ah = common->ah;
835 struct ath9k_keyval hk;
836 const u8 *mac = NULL;
840 memset(&hk, 0, sizeof(hk));
844 hk.kv_type = ATH9K_CIPHER_WEP;
847 hk.kv_type = ATH9K_CIPHER_TKIP;
850 hk.kv_type = ATH9K_CIPHER_AES_CCM;
856 hk.kv_len = key->keylen;
857 memcpy(hk.kv_val, key->key, key->keylen);
859 if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
860 /* For now, use the default keys for broadcast keys. This may
861 * need to change with virtual interfaces. */
863 } else if (key->keyidx) {
868 if (vif->type != NL80211_IFTYPE_AP) {
869 /* Only keyidx 0 should be used with unicast key, but
870 * allow this for client mode for now. */
879 if (key->alg == ALG_TKIP)
880 idx = ath_reserve_key_cache_slot_tkip(common);
882 idx = ath_reserve_key_cache_slot(common);
884 return -ENOSPC; /* no free key cache entries */
887 if (key->alg == ALG_TKIP)
888 ret = ath_setkey_tkip(common, idx, key->key, &hk, mac,
889 vif->type == NL80211_IFTYPE_AP);
891 ret = ath9k_hw_set_keycache_entry(ah, idx, &hk, mac);
896 set_bit(idx, common->keymap);
897 if (key->alg == ALG_TKIP) {
898 set_bit(idx + 64, common->keymap);
899 if (common->splitmic) {
900 set_bit(idx + 32, common->keymap);
901 set_bit(idx + 64 + 32, common->keymap);
908 static void ath_key_delete(struct ath_common *common, struct ieee80211_key_conf *key)
910 struct ath_hw *ah = common->ah;
912 ath9k_hw_keyreset(ah, key->hw_key_idx);
913 if (key->hw_key_idx < IEEE80211_WEP_NKID)
916 clear_bit(key->hw_key_idx, common->keymap);
917 if (key->alg != ALG_TKIP)
920 clear_bit(key->hw_key_idx + 64, common->keymap);
921 if (common->splitmic) {
922 clear_bit(key->hw_key_idx + 32, common->keymap);
923 clear_bit(key->hw_key_idx + 64 + 32, common->keymap);
927 static void setup_ht_cap(struct ath_softc *sc,
928 struct ieee80211_sta_ht_cap *ht_info)
930 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
931 u8 tx_streams, rx_streams;
933 ht_info->ht_supported = true;
934 ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
935 IEEE80211_HT_CAP_SM_PS |
936 IEEE80211_HT_CAP_SGI_40 |
937 IEEE80211_HT_CAP_DSSSCCK40;
939 ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
940 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
942 /* set up supported mcs set */
943 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
944 tx_streams = !(common->tx_chainmask & (common->tx_chainmask - 1)) ?
946 rx_streams = !(common->rx_chainmask & (common->rx_chainmask - 1)) ?
949 if (tx_streams != rx_streams) {
950 ath_print(common, ATH_DBG_CONFIG,
951 "TX streams %d, RX streams: %d\n",
952 tx_streams, rx_streams);
953 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
954 ht_info->mcs.tx_params |= ((tx_streams - 1) <<
955 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
958 ht_info->mcs.rx_mask[0] = 0xff;
960 ht_info->mcs.rx_mask[1] = 0xff;
962 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;
965 static void ath9k_bss_assoc_info(struct ath_softc *sc,
966 struct ieee80211_vif *vif,
967 struct ieee80211_bss_conf *bss_conf)
969 struct ath_hw *ah = sc->sc_ah;
970 struct ath_common *common = ath9k_hw_common(ah);
972 if (bss_conf->assoc) {
973 ath_print(common, ATH_DBG_CONFIG,
974 "Bss Info ASSOC %d, bssid: %pM\n",
975 bss_conf->aid, common->curbssid);
977 /* New association, store aid */
978 common->curaid = bss_conf->aid;
979 ath9k_hw_write_associd(ah);
982 * Request a re-configuration of Beacon related timers
983 * on the receipt of the first Beacon frame (i.e.,
984 * after time sync with the AP).
986 sc->sc_flags |= SC_OP_BEACON_SYNC;
988 /* Configure the beacon */
989 ath_beacon_config(sc, vif);
991 /* Reset rssi stats */
992 sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER;
994 ath_start_ani(common);
996 ath_print(common, ATH_DBG_CONFIG, "Bss Info DISASSOC\n");
999 del_timer_sync(&common->ani.timer);
1003 /********************************/
1005 /********************************/
1007 static void ath_led_blink_work(struct work_struct *work)
1009 struct ath_softc *sc = container_of(work, struct ath_softc,
1010 ath_led_blink_work.work);
1012 if (!(sc->sc_flags & SC_OP_LED_ASSOCIATED))
1015 if ((sc->led_on_duration == ATH_LED_ON_DURATION_IDLE) ||
1016 (sc->led_off_duration == ATH_LED_OFF_DURATION_IDLE))
1017 ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 0);
1019 ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin,
1020 (sc->sc_flags & SC_OP_LED_ON) ? 1 : 0);
1022 ieee80211_queue_delayed_work(sc->hw,
1023 &sc->ath_led_blink_work,
1024 (sc->sc_flags & SC_OP_LED_ON) ?
1025 msecs_to_jiffies(sc->led_off_duration) :
1026 msecs_to_jiffies(sc->led_on_duration));
1028 sc->led_on_duration = sc->led_on_cnt ?
1029 max((ATH_LED_ON_DURATION_IDLE - sc->led_on_cnt), 25) :
1030 ATH_LED_ON_DURATION_IDLE;
1031 sc->led_off_duration = sc->led_off_cnt ?
1032 max((ATH_LED_OFF_DURATION_IDLE - sc->led_off_cnt), 10) :
1033 ATH_LED_OFF_DURATION_IDLE;
1034 sc->led_on_cnt = sc->led_off_cnt = 0;
1035 if (sc->sc_flags & SC_OP_LED_ON)
1036 sc->sc_flags &= ~SC_OP_LED_ON;
1038 sc->sc_flags |= SC_OP_LED_ON;
1041 static void ath_led_brightness(struct led_classdev *led_cdev,
1042 enum led_brightness brightness)
1044 struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
1045 struct ath_softc *sc = led->sc;
1047 switch (brightness) {
1049 if (led->led_type == ATH_LED_ASSOC ||
1050 led->led_type == ATH_LED_RADIO) {
1051 ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin,
1052 (led->led_type == ATH_LED_RADIO));
1053 sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
1054 if (led->led_type == ATH_LED_RADIO)
1055 sc->sc_flags &= ~SC_OP_LED_ON;
1061 if (led->led_type == ATH_LED_ASSOC) {
1062 sc->sc_flags |= SC_OP_LED_ASSOCIATED;
1063 ieee80211_queue_delayed_work(sc->hw,
1064 &sc->ath_led_blink_work, 0);
1065 } else if (led->led_type == ATH_LED_RADIO) {
1066 ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 0);
1067 sc->sc_flags |= SC_OP_LED_ON;
1077 static int ath_register_led(struct ath_softc *sc, struct ath_led *led,
1083 led->led_cdev.name = led->name;
1084 led->led_cdev.default_trigger = trigger;
1085 led->led_cdev.brightness_set = ath_led_brightness;
1087 ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->led_cdev);
1089 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
1090 "Failed to register led:%s", led->name);
1092 led->registered = 1;
1096 static void ath_unregister_led(struct ath_led *led)
1098 if (led->registered) {
1099 led_classdev_unregister(&led->led_cdev);
1100 led->registered = 0;
1104 static void ath_deinit_leds(struct ath_softc *sc)
1106 ath_unregister_led(&sc->assoc_led);
1107 sc->sc_flags &= ~SC_OP_LED_ASSOCIATED;
1108 ath_unregister_led(&sc->tx_led);
1109 ath_unregister_led(&sc->rx_led);
1110 ath_unregister_led(&sc->radio_led);
1111 ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);
1114 static void ath_init_leds(struct ath_softc *sc)
1119 if (AR_SREV_9287(sc->sc_ah))
1120 sc->sc_ah->led_pin = ATH_LED_PIN_9287;
1122 sc->sc_ah->led_pin = ATH_LED_PIN_DEF;
1124 /* Configure gpio 1 for output */
1125 ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin,
1126 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1127 /* LED off, active low */
1128 ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);
1130 INIT_DELAYED_WORK(&sc->ath_led_blink_work, ath_led_blink_work);
1132 trigger = ieee80211_get_radio_led_name(sc->hw);
1133 snprintf(sc->radio_led.name, sizeof(sc->radio_led.name),
1134 "ath9k-%s::radio", wiphy_name(sc->hw->wiphy));
1135 ret = ath_register_led(sc, &sc->radio_led, trigger);
1136 sc->radio_led.led_type = ATH_LED_RADIO;
1140 trigger = ieee80211_get_assoc_led_name(sc->hw);
1141 snprintf(sc->assoc_led.name, sizeof(sc->assoc_led.name),
1142 "ath9k-%s::assoc", wiphy_name(sc->hw->wiphy));
1143 ret = ath_register_led(sc, &sc->assoc_led, trigger);
1144 sc->assoc_led.led_type = ATH_LED_ASSOC;
1148 trigger = ieee80211_get_tx_led_name(sc->hw);
1149 snprintf(sc->tx_led.name, sizeof(sc->tx_led.name),
1150 "ath9k-%s::tx", wiphy_name(sc->hw->wiphy));
1151 ret = ath_register_led(sc, &sc->tx_led, trigger);
1152 sc->tx_led.led_type = ATH_LED_TX;
1156 trigger = ieee80211_get_rx_led_name(sc->hw);
1157 snprintf(sc->rx_led.name, sizeof(sc->rx_led.name),
1158 "ath9k-%s::rx", wiphy_name(sc->hw->wiphy));
1159 ret = ath_register_led(sc, &sc->rx_led, trigger);
1160 sc->rx_led.led_type = ATH_LED_RX;
1167 cancel_delayed_work_sync(&sc->ath_led_blink_work);
1168 ath_deinit_leds(sc);
1171 void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
1173 struct ath_hw *ah = sc->sc_ah;
1174 struct ath_common *common = ath9k_hw_common(ah);
1175 struct ieee80211_channel *channel = hw->conf.channel;
1178 ath9k_ps_wakeup(sc);
1179 ath9k_hw_configpcipowersave(ah, 0, 0);
1182 ah->curchan = ath_get_curchannel(sc, sc->hw);
1184 spin_lock_bh(&sc->sc_resetlock);
1185 r = ath9k_hw_reset(ah, ah->curchan, false);
1187 ath_print(common, ATH_DBG_FATAL,
1188 "Unable to reset channel %u (%uMhz) ",
1189 "reset status %d\n",
1190 channel->center_freq, r);
1192 spin_unlock_bh(&sc->sc_resetlock);
1194 ath_update_txpow(sc);
1195 if (ath_startrecv(sc) != 0) {
1196 ath_print(common, ATH_DBG_FATAL,
1197 "Unable to restart recv logic\n");
1201 if (sc->sc_flags & SC_OP_BEACONS)
1202 ath_beacon_config(sc, NULL); /* restart beacons */
1204 /* Re-Enable interrupts */
1205 ath9k_hw_set_interrupts(ah, sc->imask);
1208 ath9k_hw_cfg_output(ah, ah->led_pin,
1209 AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
1210 ath9k_hw_set_gpio(ah, ah->led_pin, 0);
1212 ieee80211_wake_queues(hw);
1213 ath9k_ps_restore(sc);
1216 void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw)
1218 struct ath_hw *ah = sc->sc_ah;
1219 struct ieee80211_channel *channel = hw->conf.channel;
1222 ath9k_ps_wakeup(sc);
1223 ieee80211_stop_queues(hw);
1226 ath9k_hw_set_gpio(ah, ah->led_pin, 1);
1227 ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
1229 /* Disable interrupts */
1230 ath9k_hw_set_interrupts(ah, 0);
1232 ath_drain_all_txq(sc, false); /* clear pending tx frames */
1233 ath_stoprecv(sc); /* turn off frame recv */
1234 ath_flushrecv(sc); /* flush recv queue */
1237 ah->curchan = ath_get_curchannel(sc, hw);
1239 spin_lock_bh(&sc->sc_resetlock);
1240 r = ath9k_hw_reset(ah, ah->curchan, false);
1242 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
1243 "Unable to reset channel %u (%uMhz) "
1244 "reset status %d\n",
1245 channel->center_freq, r);
1247 spin_unlock_bh(&sc->sc_resetlock);
1249 ath9k_hw_phy_disable(ah);
1250 ath9k_hw_configpcipowersave(ah, 1, 1);
1251 ath9k_ps_restore(sc);
1252 ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP);
1255 /*******************/
1257 /*******************/
1259 static bool ath_is_rfkill_set(struct ath_softc *sc)
1261 struct ath_hw *ah = sc->sc_ah;
1263 return ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
1264 ah->rfkill_polarity;
1267 static void ath9k_rfkill_poll_state(struct ieee80211_hw *hw)
1269 struct ath_wiphy *aphy = hw->priv;
1270 struct ath_softc *sc = aphy->sc;
1271 bool blocked = !!ath_is_rfkill_set(sc);
1273 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
1276 static void ath_start_rfkill_poll(struct ath_softc *sc)
1278 struct ath_hw *ah = sc->sc_ah;
1280 if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
1281 wiphy_rfkill_start_polling(sc->hw->wiphy);
1284 static void ath9k_uninit_hw(struct ath_softc *sc)
1286 struct ath_hw *ah = sc->sc_ah;
1290 ath9k_exit_debug(ah);
1291 ath9k_hw_detach(ah);
1295 static void ath_clean_core(struct ath_softc *sc)
1297 struct ieee80211_hw *hw = sc->hw;
1298 struct ath_hw *ah = sc->sc_ah;
1301 ath9k_ps_wakeup(sc);
1303 dev_dbg(sc->dev, "Detach ATH hw\n");
1305 ath_deinit_leds(sc);
1306 wiphy_rfkill_stop_polling(sc->hw->wiphy);
1308 for (i = 0; i < sc->num_sec_wiphy; i++) {
1309 struct ath_wiphy *aphy = sc->sec_wiphy[i];
1312 sc->sec_wiphy[i] = NULL;
1313 ieee80211_unregister_hw(aphy->hw);
1314 ieee80211_free_hw(aphy->hw);
1316 ieee80211_unregister_hw(hw);
1320 tasklet_kill(&sc->intr_tq);
1321 tasklet_kill(&sc->bcon_tasklet);
1323 if (!(sc->sc_flags & SC_OP_INVALID))
1324 ath9k_setpower(sc, ATH9K_PM_AWAKE);
1326 /* cleanup tx queues */
1327 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
1328 if (ATH_TXQ_SETUP(sc, i))
1329 ath_tx_cleanupq(sc, &sc->tx.txq[i]);
1331 if ((sc->btcoex.no_stomp_timer) &&
1332 ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
1333 ath_gen_timer_free(ah, sc->btcoex.no_stomp_timer);
1336 void ath_detach(struct ath_softc *sc)
1339 ath9k_uninit_hw(sc);
1342 void ath_cleanup(struct ath_softc *sc)
1344 struct ath_hw *ah = sc->sc_ah;
1345 struct ath_common *common = ath9k_hw_common(ah);
1348 free_irq(sc->irq, sc);
1349 ath_bus_cleanup(common);
1350 kfree(sc->sec_wiphy);
1351 ieee80211_free_hw(sc->hw);
1353 ath9k_uninit_hw(sc);
1356 static int ath9k_reg_notifier(struct wiphy *wiphy,
1357 struct regulatory_request *request)
1359 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
1360 struct ath_wiphy *aphy = hw->priv;
1361 struct ath_softc *sc = aphy->sc;
1362 struct ath_regulatory *reg = ath9k_hw_regulatory(sc->sc_ah);
1364 return ath_reg_notifier_apply(wiphy, request, reg);
1368 * Detects if there is any priority bt traffic
1370 static void ath_detect_bt_priority(struct ath_softc *sc)
1372 struct ath_btcoex *btcoex = &sc->btcoex;
1373 struct ath_hw *ah = sc->sc_ah;
1375 if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio))
1376 btcoex->bt_priority_cnt++;
1378 if (time_after(jiffies, btcoex->bt_priority_time +
1379 msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) {
1380 if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
1381 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_BTCOEX,
1382 "BT priority traffic detected");
1383 sc->sc_flags |= SC_OP_BT_PRIORITY_DETECTED;
1385 sc->sc_flags &= ~SC_OP_BT_PRIORITY_DETECTED;
1388 btcoex->bt_priority_cnt = 0;
1389 btcoex->bt_priority_time = jiffies;
1394 * Configures appropriate weight based on stomp type.
1396 static void ath9k_btcoex_bt_stomp(struct ath_softc *sc,
1397 enum ath_stomp_type stomp_type)
1399 struct ath_hw *ah = sc->sc_ah;
1401 switch (stomp_type) {
1402 case ATH_BTCOEX_STOMP_ALL:
1403 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
1404 AR_STOMP_ALL_WLAN_WGHT);
1406 case ATH_BTCOEX_STOMP_LOW:
1407 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
1408 AR_STOMP_LOW_WLAN_WGHT);
1410 case ATH_BTCOEX_STOMP_NONE:
1411 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
1412 AR_STOMP_NONE_WLAN_WGHT);
1415 ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
1416 "Invalid Stomptype\n");
1420 ath9k_hw_btcoex_enable(ah);
1423 static void ath9k_gen_timer_start(struct ath_hw *ah,
1424 struct ath_gen_timer *timer,
1428 struct ath_common *common = ath9k_hw_common(ah);
1429 struct ath_softc *sc = (struct ath_softc *) common->priv;
1431 ath9k_hw_gen_timer_start(ah, timer, timer_next, timer_period);
1433 if ((sc->imask & ATH9K_INT_GENTIMER) == 0) {
1434 ath9k_hw_set_interrupts(ah, 0);
1435 sc->imask |= ATH9K_INT_GENTIMER;
1436 ath9k_hw_set_interrupts(ah, sc->imask);
1440 static void ath9k_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer)
1442 struct ath_common *common = ath9k_hw_common(ah);
1443 struct ath_softc *sc = (struct ath_softc *) common->priv;
1444 struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers;
1446 ath9k_hw_gen_timer_stop(ah, timer);
1448 /* if no timer is enabled, turn off interrupt mask */
1449 if (timer_table->timer_mask.val == 0) {
1450 ath9k_hw_set_interrupts(ah, 0);
1451 sc->imask &= ~ATH9K_INT_GENTIMER;
1452 ath9k_hw_set_interrupts(ah, sc->imask);
1457 * This is the master bt coex timer which runs for every
1458 * 45ms, bt traffic will be given priority during 55% of this
1459 * period while wlan gets remaining 45%
1461 static void ath_btcoex_period_timer(unsigned long data)
1463 struct ath_softc *sc = (struct ath_softc *) data;
1464 struct ath_hw *ah = sc->sc_ah;
1465 struct ath_btcoex *btcoex = &sc->btcoex;
1467 ath_detect_bt_priority(sc);
1469 spin_lock_bh(&btcoex->btcoex_lock);
1471 ath9k_btcoex_bt_stomp(sc, btcoex->bt_stomp_type);
1473 spin_unlock_bh(&btcoex->btcoex_lock);
1475 if (btcoex->btcoex_period != btcoex->btcoex_no_stomp) {
1476 if (btcoex->hw_timer_enabled)
1477 ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
1479 ath9k_gen_timer_start(ah,
1480 btcoex->no_stomp_timer,
1481 (ath9k_hw_gettsf32(ah) +
1482 btcoex->btcoex_no_stomp),
1483 btcoex->btcoex_no_stomp * 10);
1484 btcoex->hw_timer_enabled = true;
1487 mod_timer(&btcoex->period_timer, jiffies +
1488 msecs_to_jiffies(ATH_BTCOEX_DEF_BT_PERIOD));
1492 * Generic tsf based hw timer which configures weight
1493 * registers to time slice between wlan and bt traffic
1495 static void ath_btcoex_no_stomp_timer(void *arg)
1497 struct ath_softc *sc = (struct ath_softc *)arg;
1498 struct ath_hw *ah = sc->sc_ah;
1499 struct ath_btcoex *btcoex = &sc->btcoex;
1501 ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
1502 "no stomp timer running \n");
1504 spin_lock_bh(&btcoex->btcoex_lock);
1506 if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW)
1507 ath9k_btcoex_bt_stomp(sc, ATH_BTCOEX_STOMP_NONE);
1508 else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
1509 ath9k_btcoex_bt_stomp(sc, ATH_BTCOEX_STOMP_LOW);
1511 spin_unlock_bh(&btcoex->btcoex_lock);
1514 static int ath_init_btcoex_timer(struct ath_softc *sc)
1516 struct ath_btcoex *btcoex = &sc->btcoex;
1518 btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD * 1000;
1519 btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
1520 btcoex->btcoex_period / 100;
1522 setup_timer(&btcoex->period_timer, ath_btcoex_period_timer,
1523 (unsigned long) sc);
1525 spin_lock_init(&btcoex->btcoex_lock);
1527 btcoex->no_stomp_timer = ath_gen_timer_alloc(sc->sc_ah,
1528 ath_btcoex_no_stomp_timer,
1529 ath_btcoex_no_stomp_timer,
1530 (void *) sc, AR_FIRST_NDP_TIMER);
1532 if (!btcoex->no_stomp_timer)
1539 * Read and write, they both share the same lock. We do this to serialize
1540 * reads and writes on Atheros 802.11n PCI devices only. This is required
1541 * as the FIFO on these devices can only accept sanely 2 requests. After
1542 * that the device goes bananas. Serializing the reads/writes prevents this
1546 static void ath9k_iowrite32(void *hw_priv, u32 val, u32 reg_offset)
1548 struct ath_hw *ah = (struct ath_hw *) hw_priv;
1549 struct ath_common *common = ath9k_hw_common(ah);
1550 struct ath_softc *sc = (struct ath_softc *) common->priv;
1552 if (ah->config.serialize_regmode == SER_REG_MODE_ON) {
1553 unsigned long flags;
1554 spin_lock_irqsave(&sc->sc_serial_rw, flags);
1555 iowrite32(val, sc->mem + reg_offset);
1556 spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
1558 iowrite32(val, sc->mem + reg_offset);
1561 static unsigned int ath9k_ioread32(void *hw_priv, u32 reg_offset)
1563 struct ath_hw *ah = (struct ath_hw *) hw_priv;
1564 struct ath_common *common = ath9k_hw_common(ah);
1565 struct ath_softc *sc = (struct ath_softc *) common->priv;
1568 if (ah->config.serialize_regmode == SER_REG_MODE_ON) {
1569 unsigned long flags;
1570 spin_lock_irqsave(&sc->sc_serial_rw, flags);
1571 val = ioread32(sc->mem + reg_offset);
1572 spin_unlock_irqrestore(&sc->sc_serial_rw, flags);
1574 val = ioread32(sc->mem + reg_offset);
1578 static const struct ath_ops ath9k_common_ops = {
1579 .read = ath9k_ioread32,
1580 .write = ath9k_iowrite32,
1584 * Initialize and fill ath_softc, ath_sofct is the
1585 * "Software Carrier" struct. Historically it has existed
1586 * to allow the separation between hardware specific
1587 * variables (now in ath_hw) and driver specific variables.
1589 static int ath_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid,
1590 const struct ath_bus_ops *bus_ops)
1592 struct ath_hw *ah = NULL;
1593 struct ath_common *common;
1598 /* XXX: hardware will not be ready until ath_open() being called */
1599 sc->sc_flags |= SC_OP_INVALID;
1601 spin_lock_init(&sc->wiphy_lock);
1602 spin_lock_init(&sc->sc_resetlock);
1603 spin_lock_init(&sc->sc_serial_rw);
1604 spin_lock_init(&sc->sc_pm_lock);
1605 mutex_init(&sc->mutex);
1606 tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc);
1607 tasklet_init(&sc->bcon_tasklet, ath_beacon_tasklet,
1610 ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL);
1614 ah->hw_version.devid = devid;
1615 ah->hw_version.subsysid = subsysid;
1618 common = ath9k_hw_common(ah);
1619 common->ops = &ath9k_common_ops;
1620 common->bus_ops = bus_ops;
1622 common->hw = sc->hw;
1624 common->debug_mask = ath9k_debug;
1627 * Cache line size is used to size and align various
1628 * structures used to communicate with the hardware.
1630 ath_read_cachesize(common, &csz);
1631 /* XXX assert csz is non-zero */
1632 common->cachelsz = csz << 2; /* convert to bytes */
1634 r = ath9k_hw_init(ah);
1636 ath_print(common, ATH_DBG_FATAL,
1637 "Unable to initialize hardware; "
1638 "initialization status: %d\n", r);
1642 if (ath9k_init_debug(ah) < 0) {
1643 ath_print(common, ATH_DBG_FATAL,
1644 "Unable to create debugfs files\n");
1648 /* Get the hardware key cache size. */
1649 common->keymax = ah->caps.keycache_size;
1650 if (common->keymax > ATH_KEYMAX) {
1651 ath_print(common, ATH_DBG_ANY,
1652 "Warning, using only %u entries in %u key cache\n",
1653 ATH_KEYMAX, common->keymax);
1654 common->keymax = ATH_KEYMAX;
1658 * Reset the key cache since some parts do not
1659 * reset the contents on initial power up.
1661 for (i = 0; i < common->keymax; i++)
1662 ath9k_hw_keyreset(ah, (u16) i);
1664 /* default to MONITOR mode */
1665 sc->sc_ah->opmode = NL80211_IFTYPE_MONITOR;
1668 * Allocate hardware transmit queues: one queue for
1669 * beacon frames and one data queue for each QoS
1670 * priority. Note that the hal handles reseting
1671 * these queues at the needed time.
1673 sc->beacon.beaconq = ath9k_hw_beaconq_setup(ah);
1674 if (sc->beacon.beaconq == -1) {
1675 ath_print(common, ATH_DBG_FATAL,
1676 "Unable to setup a beacon xmit queue\n");
1680 sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0);
1681 if (sc->beacon.cabq == NULL) {
1682 ath_print(common, ATH_DBG_FATAL,
1683 "Unable to setup CAB xmit queue\n");
1688 sc->config.cabqReadytime = ATH_CABQ_READY_TIME;
1689 ath_cabq_update(sc);
1691 for (i = 0; i < ARRAY_SIZE(sc->tx.hwq_map); i++)
1692 sc->tx.hwq_map[i] = -1;
1694 /* Setup data queues */
1695 /* NB: ensure BK queue is the lowest priority h/w queue */
1696 if (!ath_tx_setup(sc, ATH9K_WME_AC_BK)) {
1697 ath_print(common, ATH_DBG_FATAL,
1698 "Unable to setup xmit queue for BK traffic\n");
1703 if (!ath_tx_setup(sc, ATH9K_WME_AC_BE)) {
1704 ath_print(common, ATH_DBG_FATAL,
1705 "Unable to setup xmit queue for BE traffic\n");
1709 if (!ath_tx_setup(sc, ATH9K_WME_AC_VI)) {
1710 ath_print(common, ATH_DBG_FATAL,
1711 "Unable to setup xmit queue for VI traffic\n");
1715 if (!ath_tx_setup(sc, ATH9K_WME_AC_VO)) {
1716 ath_print(common, ATH_DBG_FATAL,
1717 "Unable to setup xmit queue for VO traffic\n");
1722 /* Initializes the noise floor to a reasonable default value.
1723 * Later on this will be updated during ANI processing. */
1725 common->ani.noise_floor = ATH_DEFAULT_NOISE_FLOOR;
1726 setup_timer(&common->ani.timer, ath_ani_calibrate, (unsigned long)sc);
1728 if (ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER,
1729 ATH9K_CIPHER_TKIP, NULL)) {
1731 * Whether we should enable h/w TKIP MIC.
1732 * XXX: if we don't support WME TKIP MIC, then we wouldn't
1733 * report WMM capable, so it's always safe to turn on
1734 * TKIP MIC in this case.
1736 ath9k_hw_setcapability(sc->sc_ah, ATH9K_CAP_TKIP_MIC,
1741 * Check whether the separate key cache entries
1742 * are required to handle both tx+rx MIC keys.
1743 * With split mic keys the number of stations is limited
1744 * to 27 otherwise 59.
1746 if (ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER,
1747 ATH9K_CIPHER_TKIP, NULL)
1748 && ath9k_hw_getcapability(ah, ATH9K_CAP_CIPHER,
1749 ATH9K_CIPHER_MIC, NULL)
1750 && ath9k_hw_getcapability(ah, ATH9K_CAP_TKIP_SPLIT,
1752 common->splitmic = 1;
1754 /* turn on mcast key search if possible */
1755 if (!ath9k_hw_getcapability(ah, ATH9K_CAP_MCAST_KEYSRCH, 0, NULL))
1756 (void)ath9k_hw_setcapability(ah, ATH9K_CAP_MCAST_KEYSRCH, 1,
1759 sc->config.txpowlimit = ATH_TXPOWER_MAX;
1761 /* 11n Capabilities */
1762 if (ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
1763 sc->sc_flags |= SC_OP_TXAGGR;
1764 sc->sc_flags |= SC_OP_RXAGGR;
1767 common->tx_chainmask = ah->caps.tx_chainmask;
1768 common->rx_chainmask = ah->caps.rx_chainmask;
1770 ath9k_hw_setcapability(ah, ATH9K_CAP_DIVERSITY, 1, true, NULL);
1771 sc->rx.defant = ath9k_hw_getdefantenna(ah);
1773 if (ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK)
1774 memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN);
1776 sc->beacon.slottime = ATH9K_SLOT_TIME_9; /* default to short slot time */
1778 /* initialize beacon slots */
1779 for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) {
1780 sc->beacon.bslot[i] = NULL;
1781 sc->beacon.bslot_aphy[i] = NULL;
1784 /* setup channels and rates */
1786 if (test_bit(ATH9K_MODE_11G, sc->sc_ah->caps.wireless_modes)) {
1787 sc->sbands[IEEE80211_BAND_2GHZ].channels = ath9k_2ghz_chantable;
1788 sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
1789 sc->sbands[IEEE80211_BAND_2GHZ].n_channels =
1790 ARRAY_SIZE(ath9k_2ghz_chantable);
1791 sc->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates;
1792 sc->sbands[IEEE80211_BAND_2GHZ].n_bitrates =
1793 ARRAY_SIZE(ath9k_legacy_rates);
1796 if (test_bit(ATH9K_MODE_11A, sc->sc_ah->caps.wireless_modes)) {
1797 sc->sbands[IEEE80211_BAND_5GHZ].channels = ath9k_5ghz_chantable;
1798 sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ;
1799 sc->sbands[IEEE80211_BAND_5GHZ].n_channels =
1800 ARRAY_SIZE(ath9k_5ghz_chantable);
1801 sc->sbands[IEEE80211_BAND_5GHZ].bitrates =
1802 ath9k_legacy_rates + 4;
1803 sc->sbands[IEEE80211_BAND_5GHZ].n_bitrates =
1804 ARRAY_SIZE(ath9k_legacy_rates) - 4;
1807 switch (ah->btcoex_hw.scheme) {
1808 case ATH_BTCOEX_CFG_NONE:
1810 case ATH_BTCOEX_CFG_2WIRE:
1811 ath9k_hw_btcoex_init_2wire(ah);
1813 case ATH_BTCOEX_CFG_3WIRE:
1814 ath9k_hw_btcoex_init_3wire(ah);
1815 r = ath_init_btcoex_timer(sc);
1818 qnum = ath_tx_get_qnum(sc, ATH9K_TX_QUEUE_DATA, ATH9K_WME_AC_BE);
1819 ath9k_hw_init_btcoex_hw(ah, qnum);
1820 sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
1829 /* cleanup tx queues */
1830 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
1831 if (ATH_TXQ_SETUP(sc, i))
1832 ath_tx_cleanupq(sc, &sc->tx.txq[i]);
1835 ath9k_uninit_hw(sc);
1839 void ath_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
1841 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
1842 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1843 IEEE80211_HW_SIGNAL_DBM |
1844 IEEE80211_HW_AMPDU_AGGREGATION |
1845 IEEE80211_HW_SUPPORTS_PS |
1846 IEEE80211_HW_PS_NULLFUNC_STACK |
1847 IEEE80211_HW_SPECTRUM_MGMT;
1849 if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || modparam_nohwcrypt)
1850 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
1852 hw->wiphy->interface_modes =
1853 BIT(NL80211_IFTYPE_AP) |
1854 BIT(NL80211_IFTYPE_STATION) |
1855 BIT(NL80211_IFTYPE_ADHOC) |
1856 BIT(NL80211_IFTYPE_MESH_POINT);
1858 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
1862 hw->channel_change_time = 5000;
1863 hw->max_listen_interval = 10;
1864 /* Hardware supports 10 but we use 4 */
1865 hw->max_rate_tries = 4;
1866 hw->sta_data_size = sizeof(struct ath_node);
1867 hw->vif_data_size = sizeof(struct ath_vif);
1869 hw->rate_control_algorithm = "ath9k_rate_control";
1871 if (test_bit(ATH9K_MODE_11G, sc->sc_ah->caps.wireless_modes))
1872 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1873 &sc->sbands[IEEE80211_BAND_2GHZ];
1874 if (test_bit(ATH9K_MODE_11A, sc->sc_ah->caps.wireless_modes))
1875 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1876 &sc->sbands[IEEE80211_BAND_5GHZ];
1879 /* Device driver core initialization */
1880 int ath_init_device(u16 devid, struct ath_softc *sc, u16 subsysid,
1881 const struct ath_bus_ops *bus_ops)
1883 struct ieee80211_hw *hw = sc->hw;
1884 struct ath_common *common;
1887 struct ath_regulatory *reg;
1889 dev_dbg(sc->dev, "Attach ATH hw\n");
1891 error = ath_init_softc(devid, sc, subsysid, bus_ops);
1896 common = ath9k_hw_common(ah);
1898 /* get mac address from hardware and set in mac80211 */
1900 SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
1902 ath_set_hw_capab(sc, hw);
1904 error = ath_regd_init(&common->regulatory, sc->hw->wiphy,
1905 ath9k_reg_notifier);
1909 reg = &common->regulatory;
1911 if (ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
1912 if (test_bit(ATH9K_MODE_11G, ah->caps.wireless_modes))
1914 &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
1915 if (test_bit(ATH9K_MODE_11A, ah->caps.wireless_modes))
1917 &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
1920 /* initialize tx/rx engine */
1921 error = ath_tx_init(sc, ATH_TXBUF);
1925 error = ath_rx_init(sc, ATH_RXBUF);
1929 INIT_WORK(&sc->chan_work, ath9k_wiphy_chan_work);
1930 INIT_DELAYED_WORK(&sc->wiphy_work, ath9k_wiphy_work);
1931 sc->wiphy_scheduler_int = msecs_to_jiffies(500);
1933 error = ieee80211_register_hw(hw);
1935 if (!ath_is_world_regd(reg)) {
1936 error = regulatory_hint(hw->wiphy, reg->alpha2);
1941 /* Initialize LED control */
1944 ath_start_rfkill_poll(sc);
1949 /* cleanup tx queues */
1950 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
1951 if (ATH_TXQ_SETUP(sc, i))
1952 ath_tx_cleanupq(sc, &sc->tx.txq[i]);
1954 ath9k_uninit_hw(sc);
1959 int ath_reset(struct ath_softc *sc, bool retry_tx)
1961 struct ath_hw *ah = sc->sc_ah;
1962 struct ath_common *common = ath9k_hw_common(ah);
1963 struct ieee80211_hw *hw = sc->hw;
1967 del_timer_sync(&common->ani.timer);
1969 ath9k_hw_set_interrupts(ah, 0);
1970 ath_drain_all_txq(sc, retry_tx);
1974 spin_lock_bh(&sc->sc_resetlock);
1975 r = ath9k_hw_reset(ah, sc->sc_ah->curchan, false);
1977 ath_print(common, ATH_DBG_FATAL,
1978 "Unable to reset hardware; reset status %d\n", r);
1979 spin_unlock_bh(&sc->sc_resetlock);
1981 if (ath_startrecv(sc) != 0)
1982 ath_print(common, ATH_DBG_FATAL,
1983 "Unable to start recv logic\n");
1986 * We may be doing a reset in response to a request
1987 * that changes the channel so update any state that
1988 * might change as a result.
1990 ath_cache_conf_rate(sc, &hw->conf);
1992 ath_update_txpow(sc);
1994 if (sc->sc_flags & SC_OP_BEACONS)
1995 ath_beacon_config(sc, NULL); /* restart beacons */
1997 ath9k_hw_set_interrupts(ah, sc->imask);
2001 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
2002 if (ATH_TXQ_SETUP(sc, i)) {
2003 spin_lock_bh(&sc->tx.txq[i].axq_lock);
2004 ath_txq_schedule(sc, &sc->tx.txq[i]);
2005 spin_unlock_bh(&sc->tx.txq[i].axq_lock);
2011 ath_start_ani(common);
2017 * This function will allocate both the DMA descriptor structure, and the
2018 * buffers it contains. These are used to contain the descriptors used
2021 int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
2022 struct list_head *head, const char *name,
2023 int nbuf, int ndesc)
2025 #define DS2PHYS(_dd, _ds) \
2026 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc))
2027 #define ATH_DESC_4KB_BOUND_CHECK(_daddr) ((((_daddr) & 0xFFF) > 0xF7F) ? 1 : 0)
2028 #define ATH_DESC_4KB_BOUND_NUM_SKIPPED(_len) ((_len) / 4096)
2029 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
2030 struct ath_desc *ds;
2032 int i, bsize, error;
2034 ath_print(common, ATH_DBG_CONFIG, "%s DMA: %u buffers %u desc/buf\n",
2037 INIT_LIST_HEAD(head);
2038 /* ath_desc must be a multiple of DWORDs */
2039 if ((sizeof(struct ath_desc) % 4) != 0) {
2040 ath_print(common, ATH_DBG_FATAL,
2041 "ath_desc not DWORD aligned\n");
2042 BUG_ON((sizeof(struct ath_desc) % 4) != 0);
2047 dd->dd_desc_len = sizeof(struct ath_desc) * nbuf * ndesc;
2050 * Need additional DMA memory because we can't use
2051 * descriptors that cross the 4K page boundary. Assume
2052 * one skipped descriptor per 4K page.
2054 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) {
2056 ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len);
2059 while (ndesc_skipped) {
2060 dma_len = ndesc_skipped * sizeof(struct ath_desc);
2061 dd->dd_desc_len += dma_len;
2063 ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len);
2067 /* allocate descriptors */
2068 dd->dd_desc = dma_alloc_coherent(sc->dev, dd->dd_desc_len,
2069 &dd->dd_desc_paddr, GFP_KERNEL);
2070 if (dd->dd_desc == NULL) {
2075 ath_print(common, ATH_DBG_CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n",
2076 name, ds, (u32) dd->dd_desc_len,
2077 ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len);
2079 /* allocate buffers */
2080 bsize = sizeof(struct ath_buf) * nbuf;
2081 bf = kzalloc(bsize, GFP_KERNEL);
2088 for (i = 0; i < nbuf; i++, bf++, ds += ndesc) {
2090 bf->bf_daddr = DS2PHYS(dd, ds);
2092 if (!(sc->sc_ah->caps.hw_caps &
2093 ATH9K_HW_CAP_4KB_SPLITTRANS)) {
2095 * Skip descriptor addresses which can cause 4KB
2096 * boundary crossing (addr + length) with a 32 dword
2099 while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) {
2100 BUG_ON((caddr_t) bf->bf_desc >=
2101 ((caddr_t) dd->dd_desc +
2106 bf->bf_daddr = DS2PHYS(dd, ds);
2109 list_add_tail(&bf->list, head);
2113 dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc,
2116 memset(dd, 0, sizeof(*dd));
2118 #undef ATH_DESC_4KB_BOUND_CHECK
2119 #undef ATH_DESC_4KB_BOUND_NUM_SKIPPED
2123 void ath_descdma_cleanup(struct ath_softc *sc,
2124 struct ath_descdma *dd,
2125 struct list_head *head)
2127 dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc,
2130 INIT_LIST_HEAD(head);
2131 kfree(dd->dd_bufptr);
2132 memset(dd, 0, sizeof(*dd));
2135 int ath_get_hal_qnum(u16 queue, struct ath_softc *sc)
2141 qnum = sc->tx.hwq_map[ATH9K_WME_AC_VO];
2144 qnum = sc->tx.hwq_map[ATH9K_WME_AC_VI];
2147 qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE];
2150 qnum = sc->tx.hwq_map[ATH9K_WME_AC_BK];
2153 qnum = sc->tx.hwq_map[ATH9K_WME_AC_BE];
2160 int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc)
2165 case ATH9K_WME_AC_VO:
2168 case ATH9K_WME_AC_VI:
2171 case ATH9K_WME_AC_BE:
2174 case ATH9K_WME_AC_BK:
2185 /* XXX: Remove me once we don't depend on ath9k_channel for all
2186 * this redundant data */
2187 void ath9k_update_ichannel(struct ath_softc *sc, struct ieee80211_hw *hw,
2188 struct ath9k_channel *ichan)
2190 struct ieee80211_channel *chan = hw->conf.channel;
2191 struct ieee80211_conf *conf = &hw->conf;
2193 ichan->channel = chan->center_freq;
2196 if (chan->band == IEEE80211_BAND_2GHZ) {
2197 ichan->chanmode = CHANNEL_G;
2198 ichan->channelFlags = CHANNEL_2GHZ | CHANNEL_OFDM | CHANNEL_G;
2200 ichan->chanmode = CHANNEL_A;
2201 ichan->channelFlags = CHANNEL_5GHZ | CHANNEL_OFDM;
2204 if (conf_is_ht(conf))
2205 ichan->chanmode = ath_get_extchanmode(sc, chan,
2206 conf->channel_type);
2209 /**********************/
2210 /* mac80211 callbacks */
2211 /**********************/
2214 * (Re)start btcoex timers
2216 static void ath9k_btcoex_timer_resume(struct ath_softc *sc)
2218 struct ath_btcoex *btcoex = &sc->btcoex;
2219 struct ath_hw *ah = sc->sc_ah;
2221 ath_print(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
2222 "Starting btcoex timers");
2224 /* make sure duty cycle timer is also stopped when resuming */
2225 if (btcoex->hw_timer_enabled)
2226 ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer);
2228 btcoex->bt_priority_cnt = 0;
2229 btcoex->bt_priority_time = jiffies;
2230 sc->sc_flags &= ~SC_OP_BT_PRIORITY_DETECTED;
2232 mod_timer(&btcoex->period_timer, jiffies);
2235 static int ath9k_start(struct ieee80211_hw *hw)
2237 struct ath_wiphy *aphy = hw->priv;
2238 struct ath_softc *sc = aphy->sc;
2239 struct ath_hw *ah = sc->sc_ah;
2240 struct ath_common *common = ath9k_hw_common(ah);
2241 struct ieee80211_channel *curchan = hw->conf.channel;
2242 struct ath9k_channel *init_channel;
2245 ath_print(common, ATH_DBG_CONFIG,
2246 "Starting driver with initial channel: %d MHz\n",
2247 curchan->center_freq);
2249 mutex_lock(&sc->mutex);
2251 if (ath9k_wiphy_started(sc)) {
2252 if (sc->chan_idx == curchan->hw_value) {
2254 * Already on the operational channel, the new wiphy
2255 * can be marked active.
2257 aphy->state = ATH_WIPHY_ACTIVE;
2258 ieee80211_wake_queues(hw);
2261 * Another wiphy is on another channel, start the new
2262 * wiphy in paused state.
2264 aphy->state = ATH_WIPHY_PAUSED;
2265 ieee80211_stop_queues(hw);
2267 mutex_unlock(&sc->mutex);
2270 aphy->state = ATH_WIPHY_ACTIVE;
2272 /* setup initial channel */
2274 sc->chan_idx = curchan->hw_value;
2276 init_channel = ath_get_curchannel(sc, hw);
2278 /* Reset SERDES registers */
2279 ath9k_hw_configpcipowersave(ah, 0, 0);
2282 * The basic interface to setting the hardware in a good
2283 * state is ``reset''. On return the hardware is known to
2284 * be powered up and with interrupts disabled. This must
2285 * be followed by initialization of the appropriate bits
2286 * and then setup of the interrupt mask.
2288 spin_lock_bh(&sc->sc_resetlock);
2289 r = ath9k_hw_reset(ah, init_channel, false);
2291 ath_print(common, ATH_DBG_FATAL,
2292 "Unable to reset hardware; reset status %d "
2293 "(freq %u MHz)\n", r,
2294 curchan->center_freq);
2295 spin_unlock_bh(&sc->sc_resetlock);
2298 spin_unlock_bh(&sc->sc_resetlock);
2301 * This is needed only to setup initial state
2302 * but it's best done after a reset.
2304 ath_update_txpow(sc);
2307 * Setup the hardware after reset:
2308 * The receive engine is set going.
2309 * Frame transmit is handled entirely
2310 * in the frame output path; there's nothing to do
2311 * here except setup the interrupt mask.
2313 if (ath_startrecv(sc) != 0) {
2314 ath_print(common, ATH_DBG_FATAL,
2315 "Unable to start recv logic\n");
2320 /* Setup our intr mask. */
2321 sc->imask = ATH9K_INT_RX | ATH9K_INT_TX
2322 | ATH9K_INT_RXEOL | ATH9K_INT_RXORN
2323 | ATH9K_INT_FATAL | ATH9K_INT_GLOBAL;
2325 if (ah->caps.hw_caps & ATH9K_HW_CAP_GTT)
2326 sc->imask |= ATH9K_INT_GTT;
2328 if (ah->caps.hw_caps & ATH9K_HW_CAP_HT)
2329 sc->imask |= ATH9K_INT_CST;
2331 ath_cache_conf_rate(sc, &hw->conf);
2333 sc->sc_flags &= ~SC_OP_INVALID;
2335 /* Disable BMISS interrupt when we're not associated */
2336 sc->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
2337 ath9k_hw_set_interrupts(ah, sc->imask);
2339 ieee80211_wake_queues(hw);
2341 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
2343 if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) &&
2344 !ah->btcoex_hw.enabled) {
2345 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
2346 AR_STOMP_LOW_WLAN_WGHT);
2347 ath9k_hw_btcoex_enable(ah);
2349 if (common->bus_ops->bt_coex_prep)
2350 common->bus_ops->bt_coex_prep(common);
2351 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
2352 ath9k_btcoex_timer_resume(sc);
2356 mutex_unlock(&sc->mutex);
2361 static int ath9k_tx(struct ieee80211_hw *hw,
2362 struct sk_buff *skb)
2364 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2365 struct ath_wiphy *aphy = hw->priv;
2366 struct ath_softc *sc = aphy->sc;
2367 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
2368 struct ath_tx_control txctl;
2369 int padpos, padsize;
2370 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
2372 if (aphy->state != ATH_WIPHY_ACTIVE && aphy->state != ATH_WIPHY_SCAN) {
2373 ath_print(common, ATH_DBG_XMIT,
2374 "ath9k: %s: TX in unexpected wiphy state "
2375 "%d\n", wiphy_name(hw->wiphy), aphy->state);
2379 if (sc->ps_enabled) {
2381 * mac80211 does not set PM field for normal data frames, so we
2382 * need to update that based on the current PS mode.
2384 if (ieee80211_is_data(hdr->frame_control) &&
2385 !ieee80211_is_nullfunc(hdr->frame_control) &&
2386 !ieee80211_has_pm(hdr->frame_control)) {
2387 ath_print(common, ATH_DBG_PS, "Add PM=1 for a TX frame "
2388 "while in PS mode\n");
2389 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
2393 if (unlikely(sc->sc_ah->power_mode != ATH9K_PM_AWAKE)) {
2395 * We are using PS-Poll and mac80211 can request TX while in
2396 * power save mode. Need to wake up hardware for the TX to be
2397 * completed and if needed, also for RX of buffered frames.
2399 ath9k_ps_wakeup(sc);
2400 ath9k_hw_setrxabort(sc->sc_ah, 0);
2401 if (ieee80211_is_pspoll(hdr->frame_control)) {
2402 ath_print(common, ATH_DBG_PS,
2403 "Sending PS-Poll to pick a buffered frame\n");
2404 sc->sc_flags |= SC_OP_WAIT_FOR_PSPOLL_DATA;
2406 ath_print(common, ATH_DBG_PS,
2407 "Wake up to complete TX\n");
2408 sc->sc_flags |= SC_OP_WAIT_FOR_TX_ACK;
2411 * The actual restore operation will happen only after
2412 * the sc_flags bit is cleared. We are just dropping
2413 * the ps_usecount here.
2415 ath9k_ps_restore(sc);
2418 memset(&txctl, 0, sizeof(struct ath_tx_control));
2421 * As a temporary workaround, assign seq# here; this will likely need
2422 * to be cleaned up to work better with Beacon transmission and virtual
2425 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
2426 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
2427 sc->tx.seq_no += 0x10;
2428 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
2429 hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
2432 /* Add the padding after the header if this is not already done */
2433 padpos = ath9k_cmn_padpos(hdr->frame_control);
2434 padsize = padpos & 3;
2435 if (padsize && skb->len>padpos) {
2436 if (skb_headroom(skb) < padsize)
2438 skb_push(skb, padsize);
2439 memmove(skb->data, skb->data + padsize, padpos);
2442 /* Check if a tx queue is available */
2444 txctl.txq = ath_test_get_txq(sc, skb);
2448 ath_print(common, ATH_DBG_XMIT, "transmitting packet, skb: %p\n", skb);
2450 if (ath_tx_start(hw, skb, &txctl) != 0) {
2451 ath_print(common, ATH_DBG_XMIT, "TX failed\n");
2457 dev_kfree_skb_any(skb);
2462 * Pause btcoex timer and bt duty cycle timer
2464 static void ath9k_btcoex_timer_pause(struct ath_softc *sc)
2466 struct ath_btcoex *btcoex = &sc->btcoex;
2467 struct ath_hw *ah = sc->sc_ah;
2469 del_timer_sync(&btcoex->period_timer);
2471 if (btcoex->hw_timer_enabled)
2472 ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer);
2474 btcoex->hw_timer_enabled = false;
2477 static void ath9k_stop(struct ieee80211_hw *hw)
2479 struct ath_wiphy *aphy = hw->priv;
2480 struct ath_softc *sc = aphy->sc;
2481 struct ath_hw *ah = sc->sc_ah;
2482 struct ath_common *common = ath9k_hw_common(ah);
2484 mutex_lock(&sc->mutex);
2486 aphy->state = ATH_WIPHY_INACTIVE;
2488 cancel_delayed_work_sync(&sc->ath_led_blink_work);
2489 cancel_delayed_work_sync(&sc->tx_complete_work);
2491 if (!sc->num_sec_wiphy) {
2492 cancel_delayed_work_sync(&sc->wiphy_work);
2493 cancel_work_sync(&sc->chan_work);
2496 if (sc->sc_flags & SC_OP_INVALID) {
2497 ath_print(common, ATH_DBG_ANY, "Device not present\n");
2498 mutex_unlock(&sc->mutex);
2502 if (ath9k_wiphy_started(sc)) {
2503 mutex_unlock(&sc->mutex);
2504 return; /* another wiphy still in use */
2507 if (ah->btcoex_hw.enabled) {
2508 ath9k_hw_btcoex_disable(ah);
2509 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
2510 ath9k_btcoex_timer_pause(sc);
2513 /* make sure h/w will not generate any interrupt
2514 * before setting the invalid flag. */
2515 ath9k_hw_set_interrupts(ah, 0);
2517 if (!(sc->sc_flags & SC_OP_INVALID)) {
2518 ath_drain_all_txq(sc, false);
2520 ath9k_hw_phy_disable(ah);
2522 sc->rx.rxlink = NULL;
2524 /* disable HAL and put h/w to sleep */
2525 ath9k_hw_disable(ah);
2526 ath9k_hw_configpcipowersave(ah, 1, 1);
2527 ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP);
2529 sc->sc_flags |= SC_OP_INVALID;
2531 mutex_unlock(&sc->mutex);
2533 ath_print(common, ATH_DBG_CONFIG, "Driver halt\n");
2536 static int ath9k_add_interface(struct ieee80211_hw *hw,
2537 struct ieee80211_if_init_conf *conf)
2539 struct ath_wiphy *aphy = hw->priv;
2540 struct ath_softc *sc = aphy->sc;
2541 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
2542 struct ath_vif *avp = (void *)conf->vif->drv_priv;
2543 enum nl80211_iftype ic_opmode = NL80211_IFTYPE_UNSPECIFIED;
2546 mutex_lock(&sc->mutex);
2548 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK) &&
2554 switch (conf->type) {
2555 case NL80211_IFTYPE_STATION:
2556 ic_opmode = NL80211_IFTYPE_STATION;
2558 case NL80211_IFTYPE_ADHOC:
2559 case NL80211_IFTYPE_AP:
2560 case NL80211_IFTYPE_MESH_POINT:
2561 if (sc->nbcnvifs >= ATH_BCBUF) {
2565 ic_opmode = conf->type;
2568 ath_print(common, ATH_DBG_FATAL,
2569 "Interface type %d not yet supported\n", conf->type);
2574 ath_print(common, ATH_DBG_CONFIG,
2575 "Attach a VIF of type: %d\n", ic_opmode);
2577 /* Set the VIF opmode */
2578 avp->av_opmode = ic_opmode;
2583 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK)
2584 ath9k_set_bssid_mask(hw);
2587 goto out; /* skip global settings for secondary vif */
2589 if (ic_opmode == NL80211_IFTYPE_AP) {
2590 ath9k_hw_set_tsfadjust(sc->sc_ah, 1);
2591 sc->sc_flags |= SC_OP_TSF_RESET;
2594 /* Set the device opmode */
2595 sc->sc_ah->opmode = ic_opmode;
2598 * Enable MIB interrupts when there are hardware phy counters.
2599 * Note we only do this (at the moment) for station mode.
2601 if ((conf->type == NL80211_IFTYPE_STATION) ||
2602 (conf->type == NL80211_IFTYPE_ADHOC) ||
2603 (conf->type == NL80211_IFTYPE_MESH_POINT)) {
2604 sc->imask |= ATH9K_INT_MIB;
2605 sc->imask |= ATH9K_INT_TSFOOR;
2608 ath9k_hw_set_interrupts(sc->sc_ah, sc->imask);
2610 if (conf->type == NL80211_IFTYPE_AP ||
2611 conf->type == NL80211_IFTYPE_ADHOC ||
2612 conf->type == NL80211_IFTYPE_MONITOR)
2613 ath_start_ani(common);
2616 mutex_unlock(&sc->mutex);
2620 static void ath9k_remove_interface(struct ieee80211_hw *hw,
2621 struct ieee80211_if_init_conf *conf)
2623 struct ath_wiphy *aphy = hw->priv;
2624 struct ath_softc *sc = aphy->sc;
2625 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
2626 struct ath_vif *avp = (void *)conf->vif->drv_priv;
2629 ath_print(common, ATH_DBG_CONFIG, "Detach Interface\n");
2631 mutex_lock(&sc->mutex);
2634 del_timer_sync(&common->ani.timer);
2636 /* Reclaim beacon resources */
2637 if ((sc->sc_ah->opmode == NL80211_IFTYPE_AP) ||
2638 (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) ||
2639 (sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT)) {
2640 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
2641 ath_beacon_return(sc, avp);
2644 sc->sc_flags &= ~SC_OP_BEACONS;
2646 for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) {
2647 if (sc->beacon.bslot[i] == conf->vif) {
2648 printk(KERN_DEBUG "%s: vif had allocated beacon "
2649 "slot\n", __func__);
2650 sc->beacon.bslot[i] = NULL;
2651 sc->beacon.bslot_aphy[i] = NULL;
2657 mutex_unlock(&sc->mutex);
2660 static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
2662 struct ath_wiphy *aphy = hw->priv;
2663 struct ath_softc *sc = aphy->sc;
2664 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
2665 struct ieee80211_conf *conf = &hw->conf;
2666 struct ath_hw *ah = sc->sc_ah;
2669 mutex_lock(&sc->mutex);
2672 * Leave this as the first check because we need to turn on the
2673 * radio if it was disabled before prior to processing the rest
2674 * of the changes. Likewise we must only disable the radio towards
2677 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
2679 bool all_wiphys_idle;
2680 bool idle = !!(conf->flags & IEEE80211_CONF_IDLE);
2682 spin_lock_bh(&sc->wiphy_lock);
2683 all_wiphys_idle = ath9k_all_wiphys_idle(sc);
2684 ath9k_set_wiphy_idle(aphy, idle);
2686 if (!idle && all_wiphys_idle)
2687 enable_radio = true;
2690 * After we unlock here its possible another wiphy
2691 * can be re-renabled so to account for that we will
2692 * only disable the radio toward the end of this routine
2693 * if by then all wiphys are still idle.
2695 spin_unlock_bh(&sc->wiphy_lock);
2698 ath_radio_enable(sc, hw);
2699 ath_print(common, ATH_DBG_CONFIG,
2700 "not-idle: enabling radio\n");
2705 * We just prepare to enable PS. We have to wait until our AP has
2706 * ACK'd our null data frame to disable RX otherwise we'll ignore
2707 * those ACKs and end up retransmitting the same null data frames.
2708 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
2710 if (changed & IEEE80211_CONF_CHANGE_PS) {
2711 if (conf->flags & IEEE80211_CONF_PS) {
2712 sc->sc_flags |= SC_OP_PS_ENABLED;
2713 if (!(ah->caps.hw_caps &
2714 ATH9K_HW_CAP_AUTOSLEEP)) {
2715 if ((sc->imask & ATH9K_INT_TIM_TIMER) == 0) {
2716 sc->imask |= ATH9K_INT_TIM_TIMER;
2717 ath9k_hw_set_interrupts(sc->sc_ah,
2722 * At this point we know hardware has received an ACK
2723 * of a previously sent null data frame.
2725 if ((sc->sc_flags & SC_OP_NULLFUNC_COMPLETED)) {
2726 sc->sc_flags &= ~SC_OP_NULLFUNC_COMPLETED;
2727 sc->ps_enabled = true;
2728 ath9k_hw_setrxabort(sc->sc_ah, 1);
2731 sc->ps_enabled = false;
2732 sc->sc_flags &= ~(SC_OP_PS_ENABLED |
2733 SC_OP_NULLFUNC_COMPLETED);
2734 ath9k_setpower(sc, ATH9K_PM_AWAKE);
2735 if (!(ah->caps.hw_caps &
2736 ATH9K_HW_CAP_AUTOSLEEP)) {
2737 ath9k_hw_setrxabort(sc->sc_ah, 0);
2738 sc->sc_flags &= ~(SC_OP_WAIT_FOR_BEACON |
2739 SC_OP_WAIT_FOR_CAB |
2740 SC_OP_WAIT_FOR_PSPOLL_DATA |
2741 SC_OP_WAIT_FOR_TX_ACK);
2742 if (sc->imask & ATH9K_INT_TIM_TIMER) {
2743 sc->imask &= ~ATH9K_INT_TIM_TIMER;
2744 ath9k_hw_set_interrupts(sc->sc_ah,
2751 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
2752 struct ieee80211_channel *curchan = hw->conf.channel;
2753 int pos = curchan->hw_value;
2755 aphy->chan_idx = pos;
2756 aphy->chan_is_ht = conf_is_ht(conf);
2758 if (aphy->state == ATH_WIPHY_SCAN ||
2759 aphy->state == ATH_WIPHY_ACTIVE)
2760 ath9k_wiphy_pause_all_forced(sc, aphy);
2763 * Do not change operational channel based on a paused
2766 goto skip_chan_change;
2769 ath_print(common, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
2770 curchan->center_freq);
2772 /* XXX: remove me eventualy */
2773 ath9k_update_ichannel(sc, hw, &sc->sc_ah->channels[pos]);
2775 ath_update_chainmask(sc, conf_is_ht(conf));
2777 if (ath_set_channel(sc, hw, &sc->sc_ah->channels[pos]) < 0) {
2778 ath_print(common, ATH_DBG_FATAL,
2779 "Unable to set channel\n");
2780 mutex_unlock(&sc->mutex);
2786 if (changed & IEEE80211_CONF_CHANGE_POWER)
2787 sc->config.txpowlimit = 2 * conf->power_level;
2789 spin_lock_bh(&sc->wiphy_lock);
2790 disable_radio = ath9k_all_wiphys_idle(sc);
2791 spin_unlock_bh(&sc->wiphy_lock);
2793 if (disable_radio) {
2794 ath_print(common, ATH_DBG_CONFIG, "idle: disabling radio\n");
2795 ath_radio_disable(sc, hw);
2798 mutex_unlock(&sc->mutex);
2803 #define SUPPORTED_FILTERS \
2804 (FIF_PROMISC_IN_BSS | \
2809 FIF_BCN_PRBRESP_PROMISC | \
2812 /* FIXME: sc->sc_full_reset ? */
2813 static void ath9k_configure_filter(struct ieee80211_hw *hw,
2814 unsigned int changed_flags,
2815 unsigned int *total_flags,
2818 struct ath_wiphy *aphy = hw->priv;
2819 struct ath_softc *sc = aphy->sc;
2822 changed_flags &= SUPPORTED_FILTERS;
2823 *total_flags &= SUPPORTED_FILTERS;
2825 sc->rx.rxfilter = *total_flags;
2826 ath9k_ps_wakeup(sc);
2827 rfilt = ath_calcrxfilter(sc);
2828 ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
2829 ath9k_ps_restore(sc);
2831 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG,
2832 "Set HW RX filter: 0x%x\n", rfilt);
2835 static void ath9k_sta_notify(struct ieee80211_hw *hw,
2836 struct ieee80211_vif *vif,
2837 enum sta_notify_cmd cmd,
2838 struct ieee80211_sta *sta)
2840 struct ath_wiphy *aphy = hw->priv;
2841 struct ath_softc *sc = aphy->sc;
2844 case STA_NOTIFY_ADD:
2845 ath_node_attach(sc, sta);
2847 case STA_NOTIFY_REMOVE:
2848 ath_node_detach(sc, sta);
2855 static int ath9k_conf_tx(struct ieee80211_hw *hw, u16 queue,
2856 const struct ieee80211_tx_queue_params *params)
2858 struct ath_wiphy *aphy = hw->priv;
2859 struct ath_softc *sc = aphy->sc;
2860 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
2861 struct ath9k_tx_queue_info qi;
2864 if (queue >= WME_NUM_AC)
2867 mutex_lock(&sc->mutex);
2869 memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
2871 qi.tqi_aifs = params->aifs;
2872 qi.tqi_cwmin = params->cw_min;
2873 qi.tqi_cwmax = params->cw_max;
2874 qi.tqi_burstTime = params->txop;
2875 qnum = ath_get_hal_qnum(queue, sc);
2877 ath_print(common, ATH_DBG_CONFIG,
2878 "Configure tx [queue/halq] [%d/%d], "
2879 "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
2880 queue, qnum, params->aifs, params->cw_min,
2881 params->cw_max, params->txop);
2883 ret = ath_txq_update(sc, qnum, &qi);
2885 ath_print(common, ATH_DBG_FATAL, "TXQ Update failed\n");
2887 if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC)
2888 if ((qnum == sc->tx.hwq_map[ATH9K_WME_AC_BE]) && !ret)
2889 ath_beaconq_config(sc);
2891 mutex_unlock(&sc->mutex);
2896 static int ath9k_set_key(struct ieee80211_hw *hw,
2897 enum set_key_cmd cmd,
2898 struct ieee80211_vif *vif,
2899 struct ieee80211_sta *sta,
2900 struct ieee80211_key_conf *key)
2902 struct ath_wiphy *aphy = hw->priv;
2903 struct ath_softc *sc = aphy->sc;
2904 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
2907 if (modparam_nohwcrypt)
2910 mutex_lock(&sc->mutex);
2911 ath9k_ps_wakeup(sc);
2912 ath_print(common, ATH_DBG_CONFIG, "Set HW Key\n");
2916 ret = ath_key_config(common, vif, sta, key);
2918 key->hw_key_idx = ret;
2919 /* push IV and Michael MIC generation to stack */
2920 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2921 if (key->alg == ALG_TKIP)
2922 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2923 if (sc->sc_ah->sw_mgmt_crypto && key->alg == ALG_CCMP)
2924 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
2929 ath_key_delete(common, key);
2935 ath9k_ps_restore(sc);
2936 mutex_unlock(&sc->mutex);
2941 static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
2942 struct ieee80211_vif *vif,
2943 struct ieee80211_bss_conf *bss_conf,
2946 struct ath_wiphy *aphy = hw->priv;
2947 struct ath_softc *sc = aphy->sc;
2948 struct ath_hw *ah = sc->sc_ah;
2949 struct ath_common *common = ath9k_hw_common(ah);
2950 struct ath_vif *avp = (void *)vif->drv_priv;
2953 mutex_lock(&sc->mutex);
2955 if (changed & BSS_CHANGED_BSSID) {
2957 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
2958 memcpy(avp->bssid, bss_conf->bssid, ETH_ALEN);
2960 ath9k_hw_write_associd(ah);
2962 /* Set aggregation protection mode parameters */
2963 sc->config.ath_aggr_prot = 0;
2965 /* Only legacy IBSS for now */
2966 if (vif->type == NL80211_IFTYPE_ADHOC)
2967 ath_update_chainmask(sc, 0);
2969 ath_print(common, ATH_DBG_CONFIG,
2970 "BSSID: %pM aid: 0x%x\n",
2971 common->curbssid, common->curaid);
2973 /* need to reconfigure the beacon */
2974 sc->sc_flags &= ~SC_OP_BEACONS ;
2977 /* Enable transmission of beacons (AP, IBSS, MESH) */
2978 if ((changed & BSS_CHANGED_BEACON) ||
2979 ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon)) {
2980 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
2981 error = ath_beacon_alloc(aphy, vif);
2983 ath_beacon_config(sc, vif);
2986 /* Disable transmission of beacons */
2987 if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon)
2988 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
2990 if (changed & BSS_CHANGED_BEACON_INT) {
2991 sc->beacon_interval = bss_conf->beacon_int;
2993 * In case of AP mode, the HW TSF has to be reset
2994 * when the beacon interval changes.
2996 if (vif->type == NL80211_IFTYPE_AP) {
2997 sc->sc_flags |= SC_OP_TSF_RESET;
2998 ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
2999 error = ath_beacon_alloc(aphy, vif);
3001 ath_beacon_config(sc, vif);
3003 ath_beacon_config(sc, vif);
3007 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3008 ath_print(common, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n",
3009 bss_conf->use_short_preamble);
3010 if (bss_conf->use_short_preamble)
3011 sc->sc_flags |= SC_OP_PREAMBLE_SHORT;
3013 sc->sc_flags &= ~SC_OP_PREAMBLE_SHORT;
3016 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
3017 ath_print(common, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n",
3018 bss_conf->use_cts_prot);
3019 if (bss_conf->use_cts_prot &&
3020 hw->conf.channel->band != IEEE80211_BAND_5GHZ)
3021 sc->sc_flags |= SC_OP_PROTECT_ENABLE;
3023 sc->sc_flags &= ~SC_OP_PROTECT_ENABLE;
3026 if (changed & BSS_CHANGED_ASSOC) {
3027 ath_print(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
3029 ath9k_bss_assoc_info(sc, vif, bss_conf);
3032 mutex_unlock(&sc->mutex);
3035 static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
3038 struct ath_wiphy *aphy = hw->priv;
3039 struct ath_softc *sc = aphy->sc;
3041 mutex_lock(&sc->mutex);
3042 tsf = ath9k_hw_gettsf64(sc->sc_ah);
3043 mutex_unlock(&sc->mutex);
3048 static void ath9k_set_tsf(struct ieee80211_hw *hw, u64 tsf)
3050 struct ath_wiphy *aphy = hw->priv;
3051 struct ath_softc *sc = aphy->sc;
3053 mutex_lock(&sc->mutex);
3054 ath9k_hw_settsf64(sc->sc_ah, tsf);
3055 mutex_unlock(&sc->mutex);
3058 static void ath9k_reset_tsf(struct ieee80211_hw *hw)
3060 struct ath_wiphy *aphy = hw->priv;
3061 struct ath_softc *sc = aphy->sc;
3063 mutex_lock(&sc->mutex);
3065 ath9k_ps_wakeup(sc);
3066 ath9k_hw_reset_tsf(sc->sc_ah);
3067 ath9k_ps_restore(sc);
3069 mutex_unlock(&sc->mutex);
3072 static int ath9k_ampdu_action(struct ieee80211_hw *hw,
3073 struct ieee80211_vif *vif,
3074 enum ieee80211_ampdu_mlme_action action,
3075 struct ieee80211_sta *sta,
3078 struct ath_wiphy *aphy = hw->priv;
3079 struct ath_softc *sc = aphy->sc;
3083 case IEEE80211_AMPDU_RX_START:
3084 if (!(sc->sc_flags & SC_OP_RXAGGR))
3087 case IEEE80211_AMPDU_RX_STOP:
3089 case IEEE80211_AMPDU_TX_START:
3090 ath_tx_aggr_start(sc, sta, tid, ssn);
3091 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3093 case IEEE80211_AMPDU_TX_STOP:
3094 ath_tx_aggr_stop(sc, sta, tid);
3095 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
3097 case IEEE80211_AMPDU_TX_OPERATIONAL:
3098 ath_tx_aggr_resume(sc, sta, tid);
3101 ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
3102 "Unknown AMPDU action\n");
3108 static void ath9k_sw_scan_start(struct ieee80211_hw *hw)
3110 struct ath_wiphy *aphy = hw->priv;
3111 struct ath_softc *sc = aphy->sc;
3112 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
3114 mutex_lock(&sc->mutex);
3115 if (ath9k_wiphy_scanning(sc)) {
3116 printk(KERN_DEBUG "ath9k: Two wiphys trying to scan at the "
3119 * Do not allow the concurrent scanning state for now. This
3120 * could be improved with scanning control moved into ath9k.
3122 mutex_unlock(&sc->mutex);
3126 aphy->state = ATH_WIPHY_SCAN;
3127 ath9k_wiphy_pause_all_forced(sc, aphy);
3128 sc->sc_flags |= SC_OP_SCANNING;
3129 del_timer_sync(&common->ani.timer);
3130 cancel_delayed_work_sync(&sc->tx_complete_work);
3131 mutex_unlock(&sc->mutex);
3134 static void ath9k_sw_scan_complete(struct ieee80211_hw *hw)
3136 struct ath_wiphy *aphy = hw->priv;
3137 struct ath_softc *sc = aphy->sc;
3138 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
3140 mutex_lock(&sc->mutex);
3141 aphy->state = ATH_WIPHY_ACTIVE;
3142 sc->sc_flags &= ~SC_OP_SCANNING;
3143 sc->sc_flags |= SC_OP_FULL_RESET;
3144 ath_start_ani(common);
3145 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
3146 ath_beacon_config(sc, NULL);
3147 mutex_unlock(&sc->mutex);
3150 struct ieee80211_ops ath9k_ops = {
3152 .start = ath9k_start,
3154 .add_interface = ath9k_add_interface,
3155 .remove_interface = ath9k_remove_interface,
3156 .config = ath9k_config,
3157 .configure_filter = ath9k_configure_filter,
3158 .sta_notify = ath9k_sta_notify,
3159 .conf_tx = ath9k_conf_tx,
3160 .bss_info_changed = ath9k_bss_info_changed,
3161 .set_key = ath9k_set_key,
3162 .get_tsf = ath9k_get_tsf,
3163 .set_tsf = ath9k_set_tsf,
3164 .reset_tsf = ath9k_reset_tsf,
3165 .ampdu_action = ath9k_ampdu_action,
3166 .sw_scan_start = ath9k_sw_scan_start,
3167 .sw_scan_complete = ath9k_sw_scan_complete,
3168 .rfkill_poll = ath9k_rfkill_poll_state,
3171 static int __init ath9k_init(void)
3175 /* Register rate control algorithm */
3176 error = ath_rate_control_register();
3179 "ath9k: Unable to register rate control "
3185 error = ath9k_debug_create_root();
3188 "ath9k: Unable to create debugfs root: %d\n",
3190 goto err_rate_unregister;
3193 error = ath_pci_init();
3196 "ath9k: No PCI devices found, driver not installed.\n");
3198 goto err_remove_root;
3201 error = ath_ahb_init();
3213 ath9k_debug_remove_root();
3214 err_rate_unregister:
3215 ath_rate_control_unregister();
3219 module_init(ath9k_init);
3221 static void __exit ath9k_exit(void)
3225 ath9k_debug_remove_root();
3226 ath_rate_control_unregister();
3227 printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
3229 module_exit(ath9k_exit);