2 * Copyright (c) 2008-2011 Atheros Communications Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <linux/nl80211.h>
18 #include <linux/delay.h>
22 static void ath9k_set_assoc_state(struct ath_softc
*sc
,
23 struct ieee80211_vif
*vif
);
25 u8
ath9k_parse_mpdudensity(u8 mpdudensity
)
28 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
29 * 0 for no restriction
38 switch (mpdudensity
) {
44 /* Our lower layer calculations limit our precision to
60 static bool ath9k_has_pending_frames(struct ath_softc
*sc
, struct ath_txq
*txq
)
64 spin_lock_bh(&txq
->axq_lock
);
66 if (txq
->axq_depth
|| !list_empty(&txq
->axq_acq
))
69 spin_unlock_bh(&txq
->axq_lock
);
73 static bool ath9k_setpower(struct ath_softc
*sc
, enum ath9k_power_mode mode
)
78 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
79 ret
= ath9k_hw_setpower(sc
->sc_ah
, mode
);
80 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
85 void ath9k_ps_wakeup(struct ath_softc
*sc
)
87 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
89 enum ath9k_power_mode power_mode
;
91 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
92 if (++sc
->ps_usecount
!= 1)
95 power_mode
= sc
->sc_ah
->power_mode
;
96 ath9k_hw_setpower(sc
->sc_ah
, ATH9K_PM_AWAKE
);
99 * While the hardware is asleep, the cycle counters contain no
100 * useful data. Better clear them now so that they don't mess up
101 * survey data results.
103 if (power_mode
!= ATH9K_PM_AWAKE
) {
104 spin_lock(&common
->cc_lock
);
105 ath_hw_cycle_counters_update(common
);
106 memset(&common
->cc_survey
, 0, sizeof(common
->cc_survey
));
107 memset(&common
->cc_ani
, 0, sizeof(common
->cc_ani
));
108 spin_unlock(&common
->cc_lock
);
112 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
115 void ath9k_ps_restore(struct ath_softc
*sc
)
117 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
118 enum ath9k_power_mode mode
;
122 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
123 if (--sc
->ps_usecount
!= 0)
127 ath9k_hw_setrxabort(sc
->sc_ah
, 1);
128 ath9k_hw_stopdmarecv(sc
->sc_ah
, &reset
);
129 mode
= ATH9K_PM_FULL_SLEEP
;
130 } else if (sc
->ps_enabled
&&
131 !(sc
->ps_flags
& (PS_WAIT_FOR_BEACON
|
133 PS_WAIT_FOR_PSPOLL_DATA
|
136 mode
= ATH9K_PM_NETWORK_SLEEP
;
137 if (ath9k_hw_btcoex_is_enabled(sc
->sc_ah
))
138 ath9k_btcoex_stop_gen_timer(sc
);
143 spin_lock(&common
->cc_lock
);
144 ath_hw_cycle_counters_update(common
);
145 spin_unlock(&common
->cc_lock
);
147 ath9k_hw_setpower(sc
->sc_ah
, mode
);
150 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
153 static void __ath_cancel_work(struct ath_softc
*sc
)
155 cancel_work_sync(&sc
->paprd_work
);
156 cancel_work_sync(&sc
->hw_check_work
);
157 cancel_delayed_work_sync(&sc
->tx_complete_work
);
158 cancel_delayed_work_sync(&sc
->hw_pll_work
);
160 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
161 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
))
162 cancel_work_sync(&sc
->mci_work
);
166 static void ath_cancel_work(struct ath_softc
*sc
)
168 __ath_cancel_work(sc
);
169 cancel_work_sync(&sc
->hw_reset_work
);
172 static void ath_restart_work(struct ath_softc
*sc
)
174 ieee80211_queue_delayed_work(sc
->hw
, &sc
->tx_complete_work
, 0);
176 if (AR_SREV_9340(sc
->sc_ah
) || AR_SREV_9485(sc
->sc_ah
) ||
177 AR_SREV_9550(sc
->sc_ah
))
178 ieee80211_queue_delayed_work(sc
->hw
, &sc
->hw_pll_work
,
179 msecs_to_jiffies(ATH_PLL_WORK_INTERVAL
));
181 ath_start_rx_poll(sc
, 3);
185 static bool ath_prepare_reset(struct ath_softc
*sc
, bool retry_tx
, bool flush
)
187 struct ath_hw
*ah
= sc
->sc_ah
;
190 ieee80211_stop_queues(sc
->hw
);
192 sc
->hw_busy_count
= 0;
194 del_timer_sync(&sc
->rx_poll_timer
);
196 ath9k_debug_samp_bb_mac(sc
);
197 ath9k_hw_disable_interrupts(ah
);
199 if (!ath_stoprecv(sc
))
202 if (!ath_drain_all_txq(sc
, retry_tx
))
206 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
207 ath_rx_tasklet(sc
, 1, true);
208 ath_rx_tasklet(sc
, 1, false);
216 static bool ath_complete_reset(struct ath_softc
*sc
, bool start
)
218 struct ath_hw
*ah
= sc
->sc_ah
;
219 struct ath_common
*common
= ath9k_hw_common(ah
);
222 if (ath_startrecv(sc
) != 0) {
223 ath_err(common
, "Unable to restart recv logic\n");
227 ath9k_cmn_update_txpow(ah
, sc
->curtxpow
,
228 sc
->config
.txpowlimit
, &sc
->curtxpow
);
230 clear_bit(SC_OP_HW_RESET
, &sc
->sc_flags
);
231 ath9k_hw_set_interrupts(ah
);
232 ath9k_hw_enable_interrupts(ah
);
234 if (!(sc
->hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
) && start
) {
235 if (!test_bit(SC_OP_BEACONS
, &sc
->sc_flags
))
238 ath9k_set_beacon(sc
);
240 if (ah
->opmode
== NL80211_IFTYPE_STATION
&&
241 test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
)) {
242 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
243 sc
->ps_flags
|= PS_BEACON_SYNC
| PS_WAIT_FOR_BEACON
;
244 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
247 ath_restart_work(sc
);
250 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_ANT_DIV_COMB
) && sc
->ant_rx
!= 3)
251 ath_ant_comb_update(sc
);
253 ieee80211_wake_queues(sc
->hw
);
258 static int ath_reset_internal(struct ath_softc
*sc
, struct ath9k_channel
*hchan
,
261 struct ath_hw
*ah
= sc
->sc_ah
;
262 struct ath_common
*common
= ath9k_hw_common(ah
);
263 struct ath9k_hw_cal_data
*caldata
= NULL
;
268 __ath_cancel_work(sc
);
270 spin_lock_bh(&sc
->sc_pcu_lock
);
272 if (!(sc
->hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
)) {
274 caldata
= &sc
->caldata
;
283 if (!ath_prepare_reset(sc
, retry_tx
, flush
))
286 ath_dbg(common
, CONFIG
, "Reset to %u MHz, HT40: %d fastcc: %d\n",
287 hchan
->channel
, IS_CHAN_HT40(hchan
), fastcc
);
289 r
= ath9k_hw_reset(ah
, hchan
, caldata
, fastcc
);
292 "Unable to reset channel, reset status %d\n", r
);
296 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
) &&
297 (sc
->hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
))
298 ath9k_mci_set_txpower(sc
, true, false);
300 if (!ath_complete_reset(sc
, true))
304 spin_unlock_bh(&sc
->sc_pcu_lock
);
310 * Set/change channels. If the channel is really being changed, it's done
311 * by reseting the chip. To accomplish this we must first cleanup any pending
312 * DMA, then restart stuff.
314 static int ath_set_channel(struct ath_softc
*sc
, struct ieee80211_hw
*hw
,
315 struct ath9k_channel
*hchan
)
319 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
))
322 r
= ath_reset_internal(sc
, hchan
, false);
327 static void ath_node_attach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
,
328 struct ieee80211_vif
*vif
)
332 an
= (struct ath_node
*)sta
->drv_priv
;
338 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
) {
339 ath_tx_node_init(sc
, an
);
340 an
->maxampdu
= 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR
+
341 sta
->ht_cap
.ampdu_factor
);
342 density
= ath9k_parse_mpdudensity(sta
->ht_cap
.ampdu_density
);
343 an
->mpdudensity
= density
;
347 static void ath_node_detach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
)
349 struct ath_node
*an
= (struct ath_node
*)sta
->drv_priv
;
351 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
352 ath_tx_node_cleanup(sc
, an
);
355 void ath9k_tasklet(unsigned long data
)
357 struct ath_softc
*sc
= (struct ath_softc
*)data
;
358 struct ath_hw
*ah
= sc
->sc_ah
;
359 struct ath_common
*common
= ath9k_hw_common(ah
);
360 enum ath_reset_type type
;
362 u32 status
= sc
->intrstatus
;
366 spin_lock(&sc
->sc_pcu_lock
);
368 if ((status
& ATH9K_INT_FATAL
) ||
369 (status
& ATH9K_INT_BB_WATCHDOG
)) {
371 if (status
& ATH9K_INT_FATAL
)
372 type
= RESET_TYPE_FATAL_INT
;
374 type
= RESET_TYPE_BB_WATCHDOG
;
376 ath9k_queue_reset(sc
, type
);
380 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
381 if ((status
& ATH9K_INT_TSFOOR
) && sc
->ps_enabled
) {
383 * TSF sync does not look correct; remain awake to sync with
386 ath_dbg(common
, PS
, "TSFOOR - Sync with next Beacon\n");
387 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
| PS_BEACON_SYNC
;
389 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
391 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
392 rxmask
= (ATH9K_INT_RXHP
| ATH9K_INT_RXLP
| ATH9K_INT_RXEOL
|
395 rxmask
= (ATH9K_INT_RX
| ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
397 if (status
& rxmask
) {
398 /* Check for high priority Rx first */
399 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
400 (status
& ATH9K_INT_RXHP
))
401 ath_rx_tasklet(sc
, 0, true);
403 ath_rx_tasklet(sc
, 0, false);
406 if (status
& ATH9K_INT_TX
) {
407 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
408 ath_tx_edma_tasklet(sc
);
413 ath9k_btcoex_handle_interrupt(sc
, status
);
416 /* re-enable hardware interrupt */
417 ath9k_hw_enable_interrupts(ah
);
419 spin_unlock(&sc
->sc_pcu_lock
);
420 ath9k_ps_restore(sc
);
423 irqreturn_t
ath_isr(int irq
, void *dev
)
425 #define SCHED_INTR ( \
427 ATH9K_INT_BB_WATCHDOG | \
437 ATH9K_INT_GENTIMER | \
440 struct ath_softc
*sc
= dev
;
441 struct ath_hw
*ah
= sc
->sc_ah
;
442 struct ath_common
*common
= ath9k_hw_common(ah
);
443 enum ath9k_int status
;
447 * The hardware is not ready/present, don't
448 * touch anything. Note this can happen early
449 * on if the IRQ is shared.
451 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
))
454 /* shared irq, not for us */
456 if (!ath9k_hw_intrpend(ah
))
459 if (test_bit(SC_OP_HW_RESET
, &sc
->sc_flags
)) {
460 ath9k_hw_kill_interrupts(ah
);
465 * Figure out the reason(s) for the interrupt. Note
466 * that the hal returns a pseudo-ISR that may include
467 * bits we haven't explicitly enabled so we mask the
468 * value to insure we only process bits we requested.
470 ath9k_hw_getisr(ah
, &status
); /* NB: clears ISR too */
471 status
&= ah
->imask
; /* discard unasked-for bits */
474 * If there are no status bits set, then this interrupt was not
475 * for me (should have been caught above).
480 /* Cache the status */
481 sc
->intrstatus
= status
;
483 if (status
& SCHED_INTR
)
487 * If a FATAL or RXORN interrupt is received, we have to reset the
490 if ((status
& ATH9K_INT_FATAL
) || ((status
& ATH9K_INT_RXORN
) &&
491 !(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)))
494 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
495 (status
& ATH9K_INT_BB_WATCHDOG
)) {
497 spin_lock(&common
->cc_lock
);
498 ath_hw_cycle_counters_update(common
);
499 ar9003_hw_bb_watchdog_dbg_info(ah
);
500 spin_unlock(&common
->cc_lock
);
504 #ifdef CONFIG_PM_SLEEP
505 if (status
& ATH9K_INT_BMISS
) {
506 if (atomic_read(&sc
->wow_sleep_proc_intr
) == 0) {
507 ath_dbg(common
, ANY
, "during WoW we got a BMISS\n");
508 atomic_inc(&sc
->wow_got_bmiss_intr
);
509 atomic_dec(&sc
->wow_sleep_proc_intr
);
513 if (status
& ATH9K_INT_SWBA
)
514 tasklet_schedule(&sc
->bcon_tasklet
);
516 if (status
& ATH9K_INT_TXURN
)
517 ath9k_hw_updatetxtriglevel(ah
, true);
519 if (status
& ATH9K_INT_RXEOL
) {
520 ah
->imask
&= ~(ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
521 ath9k_hw_set_interrupts(ah
);
524 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
525 if (status
& ATH9K_INT_TIM_TIMER
) {
526 if (ATH_DBG_WARN_ON_ONCE(sc
->ps_idle
))
528 /* Clear RxAbort bit so that we can
530 ath9k_setpower(sc
, ATH9K_PM_AWAKE
);
531 spin_lock(&sc
->sc_pm_lock
);
532 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
533 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
;
534 spin_unlock(&sc
->sc_pm_lock
);
539 ath_debug_stat_interrupt(sc
, status
);
542 /* turn off every interrupt */
543 ath9k_hw_disable_interrupts(ah
);
544 tasklet_schedule(&sc
->intr_tq
);
552 static int ath_reset(struct ath_softc
*sc
, bool retry_tx
)
558 r
= ath_reset_internal(sc
, NULL
, retry_tx
);
562 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
563 if (ATH_TXQ_SETUP(sc
, i
)) {
564 spin_lock_bh(&sc
->tx
.txq
[i
].axq_lock
);
565 ath_txq_schedule(sc
, &sc
->tx
.txq
[i
]);
566 spin_unlock_bh(&sc
->tx
.txq
[i
].axq_lock
);
571 ath9k_ps_restore(sc
);
576 void ath9k_queue_reset(struct ath_softc
*sc
, enum ath_reset_type type
)
578 #ifdef CONFIG_ATH9K_DEBUGFS
579 RESET_STAT_INC(sc
, type
);
581 set_bit(SC_OP_HW_RESET
, &sc
->sc_flags
);
582 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
585 void ath_reset_work(struct work_struct
*work
)
587 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, hw_reset_work
);
592 /**********************/
593 /* mac80211 callbacks */
594 /**********************/
596 static int ath9k_start(struct ieee80211_hw
*hw
)
598 struct ath_softc
*sc
= hw
->priv
;
599 struct ath_hw
*ah
= sc
->sc_ah
;
600 struct ath_common
*common
= ath9k_hw_common(ah
);
601 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
602 struct ath9k_channel
*init_channel
;
605 ath_dbg(common
, CONFIG
,
606 "Starting driver with initial channel: %d MHz\n",
607 curchan
->center_freq
);
610 mutex_lock(&sc
->mutex
);
612 init_channel
= ath9k_cmn_get_curchannel(hw
, ah
);
614 /* Reset SERDES registers */
615 ath9k_hw_configpcipowersave(ah
, false);
618 * The basic interface to setting the hardware in a good
619 * state is ``reset''. On return the hardware is known to
620 * be powered up and with interrupts disabled. This must
621 * be followed by initialization of the appropriate bits
622 * and then setup of the interrupt mask.
624 spin_lock_bh(&sc
->sc_pcu_lock
);
626 atomic_set(&ah
->intr_ref_cnt
, -1);
628 r
= ath9k_hw_reset(ah
, init_channel
, ah
->caldata
, false);
631 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
632 r
, curchan
->center_freq
);
633 ah
->reset_power_on
= false;
636 /* Setup our intr mask. */
637 ah
->imask
= ATH9K_INT_TX
| ATH9K_INT_RXEOL
|
638 ATH9K_INT_RXORN
| ATH9K_INT_FATAL
|
641 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
642 ah
->imask
|= ATH9K_INT_RXHP
|
644 ATH9K_INT_BB_WATCHDOG
;
646 ah
->imask
|= ATH9K_INT_RX
;
648 ah
->imask
|= ATH9K_INT_GTT
;
650 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
651 ah
->imask
|= ATH9K_INT_CST
;
655 clear_bit(SC_OP_INVALID
, &sc
->sc_flags
);
656 sc
->sc_ah
->is_monitoring
= false;
658 if (!ath_complete_reset(sc
, false))
659 ah
->reset_power_on
= false;
661 if (ah
->led_pin
>= 0) {
662 ath9k_hw_cfg_output(ah
, ah
->led_pin
,
663 AR_GPIO_OUTPUT_MUX_AS_OUTPUT
);
664 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 0);
668 * Reset key cache to sane defaults (all entries cleared) instead of
669 * semi-random values after suspend/resume.
671 ath9k_cmn_init_crypto(sc
->sc_ah
);
673 spin_unlock_bh(&sc
->sc_pcu_lock
);
675 mutex_unlock(&sc
->mutex
);
677 ath9k_ps_restore(sc
);
682 static void ath9k_tx(struct ieee80211_hw
*hw
,
683 struct ieee80211_tx_control
*control
,
686 struct ath_softc
*sc
= hw
->priv
;
687 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
688 struct ath_tx_control txctl
;
689 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
692 if (sc
->ps_enabled
) {
694 * mac80211 does not set PM field for normal data frames, so we
695 * need to update that based on the current PS mode.
697 if (ieee80211_is_data(hdr
->frame_control
) &&
698 !ieee80211_is_nullfunc(hdr
->frame_control
) &&
699 !ieee80211_has_pm(hdr
->frame_control
)) {
701 "Add PM=1 for a TX frame while in PS mode\n");
702 hdr
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
706 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_NETWORK_SLEEP
)) {
708 * We are using PS-Poll and mac80211 can request TX while in
709 * power save mode. Need to wake up hardware for the TX to be
710 * completed and if needed, also for RX of buffered frames.
713 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
714 if (!(sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
715 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
716 if (ieee80211_is_pspoll(hdr
->frame_control
)) {
718 "Sending PS-Poll to pick a buffered frame\n");
719 sc
->ps_flags
|= PS_WAIT_FOR_PSPOLL_DATA
;
721 ath_dbg(common
, PS
, "Wake up to complete TX\n");
722 sc
->ps_flags
|= PS_WAIT_FOR_TX_ACK
;
725 * The actual restore operation will happen only after
726 * the ps_flags bit is cleared. We are just dropping
727 * the ps_usecount here.
729 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
730 ath9k_ps_restore(sc
);
734 * Cannot tx while the hardware is in full sleep, it first needs a full
735 * chip reset to recover from that
737 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_FULL_SLEEP
)) {
738 ath_err(common
, "TX while HW is in FULL_SLEEP mode\n");
742 memset(&txctl
, 0, sizeof(struct ath_tx_control
));
743 txctl
.txq
= sc
->tx
.txq_map
[skb_get_queue_mapping(skb
)];
744 txctl
.sta
= control
->sta
;
746 ath_dbg(common
, XMIT
, "transmitting packet, skb: %p\n", skb
);
748 if (ath_tx_start(hw
, skb
, &txctl
) != 0) {
749 ath_dbg(common
, XMIT
, "TX failed\n");
750 TX_STAT_INC(txctl
.txq
->axq_qnum
, txfailed
);
756 ieee80211_free_txskb(hw
, skb
);
759 static void ath9k_stop(struct ieee80211_hw
*hw
)
761 struct ath_softc
*sc
= hw
->priv
;
762 struct ath_hw
*ah
= sc
->sc_ah
;
763 struct ath_common
*common
= ath9k_hw_common(ah
);
766 mutex_lock(&sc
->mutex
);
769 del_timer_sync(&sc
->rx_poll_timer
);
771 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
)) {
772 ath_dbg(common
, ANY
, "Device not present\n");
773 mutex_unlock(&sc
->mutex
);
777 /* Ensure HW is awake when we try to shut it down. */
780 spin_lock_bh(&sc
->sc_pcu_lock
);
782 /* prevent tasklets to enable interrupts once we disable them */
783 ah
->imask
&= ~ATH9K_INT_GLOBAL
;
785 /* make sure h/w will not generate any interrupt
786 * before setting the invalid flag. */
787 ath9k_hw_disable_interrupts(ah
);
789 spin_unlock_bh(&sc
->sc_pcu_lock
);
791 /* we can now sync irq and kill any running tasklets, since we already
792 * disabled interrupts and not holding a spin lock */
793 synchronize_irq(sc
->irq
);
794 tasklet_kill(&sc
->intr_tq
);
795 tasklet_kill(&sc
->bcon_tasklet
);
797 prev_idle
= sc
->ps_idle
;
800 spin_lock_bh(&sc
->sc_pcu_lock
);
802 if (ah
->led_pin
>= 0) {
803 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 1);
804 ath9k_hw_cfg_gpio_input(ah
, ah
->led_pin
);
807 ath_prepare_reset(sc
, false, true);
810 dev_kfree_skb_any(sc
->rx
.frag
);
815 ah
->curchan
= ath9k_cmn_get_curchannel(hw
, ah
);
817 ath9k_hw_reset(ah
, ah
->curchan
, ah
->caldata
, false);
818 ath9k_hw_phy_disable(ah
);
820 ath9k_hw_configpcipowersave(ah
, true);
822 spin_unlock_bh(&sc
->sc_pcu_lock
);
824 ath9k_ps_restore(sc
);
826 set_bit(SC_OP_INVALID
, &sc
->sc_flags
);
827 sc
->ps_idle
= prev_idle
;
829 mutex_unlock(&sc
->mutex
);
831 ath_dbg(common
, CONFIG
, "Driver halt\n");
834 bool ath9k_uses_beacons(int type
)
837 case NL80211_IFTYPE_AP
:
838 case NL80211_IFTYPE_ADHOC
:
839 case NL80211_IFTYPE_MESH_POINT
:
846 static void ath9k_vif_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
848 struct ath9k_vif_iter_data
*iter_data
= data
;
851 if (iter_data
->hw_macaddr
)
852 for (i
= 0; i
< ETH_ALEN
; i
++)
853 iter_data
->mask
[i
] &=
854 ~(iter_data
->hw_macaddr
[i
] ^ mac
[i
]);
857 case NL80211_IFTYPE_AP
:
860 case NL80211_IFTYPE_STATION
:
861 iter_data
->nstations
++;
863 case NL80211_IFTYPE_ADHOC
:
864 iter_data
->nadhocs
++;
866 case NL80211_IFTYPE_MESH_POINT
:
867 iter_data
->nmeshes
++;
869 case NL80211_IFTYPE_WDS
:
877 static void ath9k_sta_vif_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
879 struct ath_softc
*sc
= data
;
880 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
882 if (vif
->type
!= NL80211_IFTYPE_STATION
)
885 if (avp
->primary_sta_vif
)
886 ath9k_set_assoc_state(sc
, vif
);
889 /* Called with sc->mutex held. */
890 void ath9k_calculate_iter_data(struct ieee80211_hw
*hw
,
891 struct ieee80211_vif
*vif
,
892 struct ath9k_vif_iter_data
*iter_data
)
894 struct ath_softc
*sc
= hw
->priv
;
895 struct ath_hw
*ah
= sc
->sc_ah
;
896 struct ath_common
*common
= ath9k_hw_common(ah
);
899 * Use the hardware MAC address as reference, the hardware uses it
900 * together with the BSSID mask when matching addresses.
902 memset(iter_data
, 0, sizeof(*iter_data
));
903 iter_data
->hw_macaddr
= common
->macaddr
;
904 memset(&iter_data
->mask
, 0xff, ETH_ALEN
);
907 ath9k_vif_iter(iter_data
, vif
->addr
, vif
);
909 /* Get list of all active MAC addresses */
910 ieee80211_iterate_active_interfaces_atomic(
911 sc
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
912 ath9k_vif_iter
, iter_data
);
915 /* Called with sc->mutex held. */
916 static void ath9k_calculate_summary_state(struct ieee80211_hw
*hw
,
917 struct ieee80211_vif
*vif
)
919 struct ath_softc
*sc
= hw
->priv
;
920 struct ath_hw
*ah
= sc
->sc_ah
;
921 struct ath_common
*common
= ath9k_hw_common(ah
);
922 struct ath9k_vif_iter_data iter_data
;
923 enum nl80211_iftype old_opmode
= ah
->opmode
;
925 ath9k_calculate_iter_data(hw
, vif
, &iter_data
);
927 memcpy(common
->bssidmask
, iter_data
.mask
, ETH_ALEN
);
928 ath_hw_setbssidmask(common
);
930 if (iter_data
.naps
> 0) {
931 ath9k_hw_set_tsfadjust(ah
, true);
932 ah
->opmode
= NL80211_IFTYPE_AP
;
934 ath9k_hw_set_tsfadjust(ah
, false);
936 if (iter_data
.nmeshes
)
937 ah
->opmode
= NL80211_IFTYPE_MESH_POINT
;
938 else if (iter_data
.nwds
)
939 ah
->opmode
= NL80211_IFTYPE_AP
;
940 else if (iter_data
.nadhocs
)
941 ah
->opmode
= NL80211_IFTYPE_ADHOC
;
943 ah
->opmode
= NL80211_IFTYPE_STATION
;
946 ath9k_hw_setopmode(ah
);
948 if ((iter_data
.nstations
+ iter_data
.nadhocs
+ iter_data
.nmeshes
) > 0)
949 ah
->imask
|= ATH9K_INT_TSFOOR
;
951 ah
->imask
&= ~ATH9K_INT_TSFOOR
;
953 ath9k_hw_set_interrupts(ah
);
956 * If we are changing the opmode to STATION,
957 * a beacon sync needs to be done.
959 if (ah
->opmode
== NL80211_IFTYPE_STATION
&&
960 old_opmode
== NL80211_IFTYPE_AP
&&
961 test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
)) {
962 ieee80211_iterate_active_interfaces_atomic(
963 sc
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
964 ath9k_sta_vif_iter
, sc
);
968 static int ath9k_add_interface(struct ieee80211_hw
*hw
,
969 struct ieee80211_vif
*vif
)
971 struct ath_softc
*sc
= hw
->priv
;
972 struct ath_hw
*ah
= sc
->sc_ah
;
973 struct ath_common
*common
= ath9k_hw_common(ah
);
975 mutex_lock(&sc
->mutex
);
977 ath_dbg(common
, CONFIG
, "Attach a VIF of type: %d\n", vif
->type
);
981 ath9k_calculate_summary_state(hw
, vif
);
982 ath9k_ps_restore(sc
);
984 if (ath9k_uses_beacons(vif
->type
))
985 ath9k_beacon_assign_slot(sc
, vif
);
987 mutex_unlock(&sc
->mutex
);
991 static int ath9k_change_interface(struct ieee80211_hw
*hw
,
992 struct ieee80211_vif
*vif
,
993 enum nl80211_iftype new_type
,
996 struct ath_softc
*sc
= hw
->priv
;
997 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
999 ath_dbg(common
, CONFIG
, "Change Interface\n");
1000 mutex_lock(&sc
->mutex
);
1002 if (ath9k_uses_beacons(vif
->type
))
1003 ath9k_beacon_remove_slot(sc
, vif
);
1005 vif
->type
= new_type
;
1008 ath9k_ps_wakeup(sc
);
1009 ath9k_calculate_summary_state(hw
, vif
);
1010 ath9k_ps_restore(sc
);
1012 if (ath9k_uses_beacons(vif
->type
))
1013 ath9k_beacon_assign_slot(sc
, vif
);
1015 mutex_unlock(&sc
->mutex
);
1019 static void ath9k_remove_interface(struct ieee80211_hw
*hw
,
1020 struct ieee80211_vif
*vif
)
1022 struct ath_softc
*sc
= hw
->priv
;
1023 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1025 ath_dbg(common
, CONFIG
, "Detach Interface\n");
1027 mutex_lock(&sc
->mutex
);
1031 if (ath9k_uses_beacons(vif
->type
))
1032 ath9k_beacon_remove_slot(sc
, vif
);
1034 ath9k_ps_wakeup(sc
);
1035 ath9k_calculate_summary_state(hw
, NULL
);
1036 ath9k_ps_restore(sc
);
1038 mutex_unlock(&sc
->mutex
);
1041 static void ath9k_enable_ps(struct ath_softc
*sc
)
1043 struct ath_hw
*ah
= sc
->sc_ah
;
1044 struct ath_common
*common
= ath9k_hw_common(ah
);
1046 sc
->ps_enabled
= true;
1047 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1048 if ((ah
->imask
& ATH9K_INT_TIM_TIMER
) == 0) {
1049 ah
->imask
|= ATH9K_INT_TIM_TIMER
;
1050 ath9k_hw_set_interrupts(ah
);
1052 ath9k_hw_setrxabort(ah
, 1);
1054 ath_dbg(common
, PS
, "PowerSave enabled\n");
1057 static void ath9k_disable_ps(struct ath_softc
*sc
)
1059 struct ath_hw
*ah
= sc
->sc_ah
;
1060 struct ath_common
*common
= ath9k_hw_common(ah
);
1062 sc
->ps_enabled
= false;
1063 ath9k_hw_setpower(ah
, ATH9K_PM_AWAKE
);
1064 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1065 ath9k_hw_setrxabort(ah
, 0);
1066 sc
->ps_flags
&= ~(PS_WAIT_FOR_BEACON
|
1068 PS_WAIT_FOR_PSPOLL_DATA
|
1069 PS_WAIT_FOR_TX_ACK
);
1070 if (ah
->imask
& ATH9K_INT_TIM_TIMER
) {
1071 ah
->imask
&= ~ATH9K_INT_TIM_TIMER
;
1072 ath9k_hw_set_interrupts(ah
);
1075 ath_dbg(common
, PS
, "PowerSave disabled\n");
1078 static int ath9k_config(struct ieee80211_hw
*hw
, u32 changed
)
1080 struct ath_softc
*sc
= hw
->priv
;
1081 struct ath_hw
*ah
= sc
->sc_ah
;
1082 struct ath_common
*common
= ath9k_hw_common(ah
);
1083 struct ieee80211_conf
*conf
= &hw
->conf
;
1084 bool reset_channel
= false;
1086 ath9k_ps_wakeup(sc
);
1087 mutex_lock(&sc
->mutex
);
1089 if (changed
& IEEE80211_CONF_CHANGE_IDLE
) {
1090 sc
->ps_idle
= !!(conf
->flags
& IEEE80211_CONF_IDLE
);
1092 ath_cancel_work(sc
);
1093 ath9k_stop_btcoex(sc
);
1095 ath9k_start_btcoex(sc
);
1097 * The chip needs a reset to properly wake up from
1100 reset_channel
= ah
->chip_fullsleep
;
1105 * We just prepare to enable PS. We have to wait until our AP has
1106 * ACK'd our null data frame to disable RX otherwise we'll ignore
1107 * those ACKs and end up retransmitting the same null data frames.
1108 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1110 if (changed
& IEEE80211_CONF_CHANGE_PS
) {
1111 unsigned long flags
;
1112 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
1113 if (conf
->flags
& IEEE80211_CONF_PS
)
1114 ath9k_enable_ps(sc
);
1116 ath9k_disable_ps(sc
);
1117 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
1120 if (changed
& IEEE80211_CONF_CHANGE_MONITOR
) {
1121 if (conf
->flags
& IEEE80211_CONF_MONITOR
) {
1122 ath_dbg(common
, CONFIG
, "Monitor mode is enabled\n");
1123 sc
->sc_ah
->is_monitoring
= true;
1125 ath_dbg(common
, CONFIG
, "Monitor mode is disabled\n");
1126 sc
->sc_ah
->is_monitoring
= false;
1130 if ((changed
& IEEE80211_CONF_CHANGE_CHANNEL
) || reset_channel
) {
1131 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
1132 int pos
= curchan
->hw_value
;
1134 unsigned long flags
;
1137 old_pos
= ah
->curchan
- &ah
->channels
[0];
1139 ath_dbg(common
, CONFIG
, "Set channel: %d MHz type: %d\n",
1140 curchan
->center_freq
, conf
->channel_type
);
1142 /* update survey stats for the old channel before switching */
1143 spin_lock_irqsave(&common
->cc_lock
, flags
);
1144 ath_update_survey_stats(sc
);
1145 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1148 * Preserve the current channel values, before updating
1151 if (ah
->curchan
&& (old_pos
== pos
))
1152 ath9k_hw_getnf(ah
, ah
->curchan
);
1154 ath9k_cmn_update_ichannel(&sc
->sc_ah
->channels
[pos
],
1155 curchan
, conf
->channel_type
);
1158 * If the operating channel changes, change the survey in-use flags
1160 * Reset the survey data for the new channel, unless we're switching
1161 * back to the operating channel from an off-channel operation.
1163 if (!(hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
) &&
1164 sc
->cur_survey
!= &sc
->survey
[pos
]) {
1167 sc
->cur_survey
->filled
&= ~SURVEY_INFO_IN_USE
;
1169 sc
->cur_survey
= &sc
->survey
[pos
];
1171 memset(sc
->cur_survey
, 0, sizeof(struct survey_info
));
1172 sc
->cur_survey
->filled
|= SURVEY_INFO_IN_USE
;
1173 } else if (!(sc
->survey
[pos
].filled
& SURVEY_INFO_IN_USE
)) {
1174 memset(&sc
->survey
[pos
], 0, sizeof(struct survey_info
));
1177 if (ath_set_channel(sc
, hw
, &sc
->sc_ah
->channels
[pos
]) < 0) {
1178 ath_err(common
, "Unable to set channel\n");
1179 mutex_unlock(&sc
->mutex
);
1180 ath9k_ps_restore(sc
);
1185 * The most recent snapshot of channel->noisefloor for the old
1186 * channel is only available after the hardware reset. Copy it to
1187 * the survey stats now.
1190 ath_update_survey_nf(sc
, old_pos
);
1193 if (changed
& IEEE80211_CONF_CHANGE_POWER
) {
1194 ath_dbg(common
, CONFIG
, "Set power: %d\n", conf
->power_level
);
1195 sc
->config
.txpowlimit
= 2 * conf
->power_level
;
1196 ath9k_cmn_update_txpow(ah
, sc
->curtxpow
,
1197 sc
->config
.txpowlimit
, &sc
->curtxpow
);
1200 mutex_unlock(&sc
->mutex
);
1201 ath9k_ps_restore(sc
);
1206 #define SUPPORTED_FILTERS \
1207 (FIF_PROMISC_IN_BSS | \
1212 FIF_BCN_PRBRESP_PROMISC | \
1216 /* FIXME: sc->sc_full_reset ? */
1217 static void ath9k_configure_filter(struct ieee80211_hw
*hw
,
1218 unsigned int changed_flags
,
1219 unsigned int *total_flags
,
1222 struct ath_softc
*sc
= hw
->priv
;
1225 changed_flags
&= SUPPORTED_FILTERS
;
1226 *total_flags
&= SUPPORTED_FILTERS
;
1228 sc
->rx
.rxfilter
= *total_flags
;
1229 ath9k_ps_wakeup(sc
);
1230 rfilt
= ath_calcrxfilter(sc
);
1231 ath9k_hw_setrxfilter(sc
->sc_ah
, rfilt
);
1232 ath9k_ps_restore(sc
);
1234 ath_dbg(ath9k_hw_common(sc
->sc_ah
), CONFIG
, "Set HW RX filter: 0x%x\n",
1238 static int ath9k_sta_add(struct ieee80211_hw
*hw
,
1239 struct ieee80211_vif
*vif
,
1240 struct ieee80211_sta
*sta
)
1242 struct ath_softc
*sc
= hw
->priv
;
1243 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1244 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1245 struct ieee80211_key_conf ps_key
= { };
1247 ath_node_attach(sc
, sta
, vif
);
1249 if (vif
->type
!= NL80211_IFTYPE_AP
&&
1250 vif
->type
!= NL80211_IFTYPE_AP_VLAN
)
1253 an
->ps_key
= ath_key_config(common
, vif
, sta
, &ps_key
);
1258 static void ath9k_del_ps_key(struct ath_softc
*sc
,
1259 struct ieee80211_vif
*vif
,
1260 struct ieee80211_sta
*sta
)
1262 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1263 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1264 struct ieee80211_key_conf ps_key
= { .hw_key_idx
= an
->ps_key
};
1269 ath_key_delete(common
, &ps_key
);
1272 static int ath9k_sta_remove(struct ieee80211_hw
*hw
,
1273 struct ieee80211_vif
*vif
,
1274 struct ieee80211_sta
*sta
)
1276 struct ath_softc
*sc
= hw
->priv
;
1278 ath9k_del_ps_key(sc
, vif
, sta
);
1279 ath_node_detach(sc
, sta
);
1284 static void ath9k_sta_notify(struct ieee80211_hw
*hw
,
1285 struct ieee80211_vif
*vif
,
1286 enum sta_notify_cmd cmd
,
1287 struct ieee80211_sta
*sta
)
1289 struct ath_softc
*sc
= hw
->priv
;
1290 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1292 if (!sta
->ht_cap
.ht_supported
)
1296 case STA_NOTIFY_SLEEP
:
1297 an
->sleeping
= true;
1298 ath_tx_aggr_sleep(sta
, sc
, an
);
1300 case STA_NOTIFY_AWAKE
:
1301 an
->sleeping
= false;
1302 ath_tx_aggr_wakeup(sc
, an
);
1307 static int ath9k_conf_tx(struct ieee80211_hw
*hw
,
1308 struct ieee80211_vif
*vif
, u16 queue
,
1309 const struct ieee80211_tx_queue_params
*params
)
1311 struct ath_softc
*sc
= hw
->priv
;
1312 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1313 struct ath_txq
*txq
;
1314 struct ath9k_tx_queue_info qi
;
1317 if (queue
>= IEEE80211_NUM_ACS
)
1320 txq
= sc
->tx
.txq_map
[queue
];
1322 ath9k_ps_wakeup(sc
);
1323 mutex_lock(&sc
->mutex
);
1325 memset(&qi
, 0, sizeof(struct ath9k_tx_queue_info
));
1327 qi
.tqi_aifs
= params
->aifs
;
1328 qi
.tqi_cwmin
= params
->cw_min
;
1329 qi
.tqi_cwmax
= params
->cw_max
;
1330 qi
.tqi_burstTime
= params
->txop
* 32;
1332 ath_dbg(common
, CONFIG
,
1333 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1334 queue
, txq
->axq_qnum
, params
->aifs
, params
->cw_min
,
1335 params
->cw_max
, params
->txop
);
1337 ath_update_max_aggr_framelen(sc
, queue
, qi
.tqi_burstTime
);
1338 ret
= ath_txq_update(sc
, txq
->axq_qnum
, &qi
);
1340 ath_err(common
, "TXQ Update failed\n");
1342 mutex_unlock(&sc
->mutex
);
1343 ath9k_ps_restore(sc
);
1348 static int ath9k_set_key(struct ieee80211_hw
*hw
,
1349 enum set_key_cmd cmd
,
1350 struct ieee80211_vif
*vif
,
1351 struct ieee80211_sta
*sta
,
1352 struct ieee80211_key_conf
*key
)
1354 struct ath_softc
*sc
= hw
->priv
;
1355 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1358 if (ath9k_modparam_nohwcrypt
)
1361 if ((vif
->type
== NL80211_IFTYPE_ADHOC
||
1362 vif
->type
== NL80211_IFTYPE_MESH_POINT
) &&
1363 (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
||
1364 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
) &&
1365 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
1367 * For now, disable hw crypto for the RSN IBSS group keys. This
1368 * could be optimized in the future to use a modified key cache
1369 * design to support per-STA RX GTK, but until that gets
1370 * implemented, use of software crypto for group addressed
1371 * frames is a acceptable to allow RSN IBSS to be used.
1376 mutex_lock(&sc
->mutex
);
1377 ath9k_ps_wakeup(sc
);
1378 ath_dbg(common
, CONFIG
, "Set HW Key\n");
1383 ath9k_del_ps_key(sc
, vif
, sta
);
1385 ret
= ath_key_config(common
, vif
, sta
, key
);
1387 key
->hw_key_idx
= ret
;
1388 /* push IV and Michael MIC generation to stack */
1389 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
1390 if (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
)
1391 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
1392 if (sc
->sc_ah
->sw_mgmt_crypto
&&
1393 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
)
1394 key
->flags
|= IEEE80211_KEY_FLAG_SW_MGMT_TX
;
1399 ath_key_delete(common
, key
);
1405 ath9k_ps_restore(sc
);
1406 mutex_unlock(&sc
->mutex
);
1411 static void ath9k_set_assoc_state(struct ath_softc
*sc
,
1412 struct ieee80211_vif
*vif
)
1414 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1415 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1416 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1417 unsigned long flags
;
1419 set_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
);
1420 avp
->primary_sta_vif
= true;
1423 * Set the AID, BSSID and do beacon-sync only when
1424 * the HW opmode is STATION.
1426 * But the primary bit is set above in any case.
1428 if (sc
->sc_ah
->opmode
!= NL80211_IFTYPE_STATION
)
1431 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
1432 common
->curaid
= bss_conf
->aid
;
1433 ath9k_hw_write_associd(sc
->sc_ah
);
1435 sc
->last_rssi
= ATH_RSSI_DUMMY_MARKER
;
1436 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
1438 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
1439 sc
->ps_flags
|= PS_BEACON_SYNC
| PS_WAIT_FOR_BEACON
;
1440 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
1442 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
))
1443 ath9k_mci_update_wlan_channels(sc
, false);
1445 ath_dbg(common
, CONFIG
,
1446 "Primary Station interface: %pM, BSSID: %pM\n",
1447 vif
->addr
, common
->curbssid
);
1450 static void ath9k_bss_assoc_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
1452 struct ath_softc
*sc
= data
;
1453 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1455 if (test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
))
1458 if (bss_conf
->assoc
)
1459 ath9k_set_assoc_state(sc
, vif
);
1462 static void ath9k_bss_info_changed(struct ieee80211_hw
*hw
,
1463 struct ieee80211_vif
*vif
,
1464 struct ieee80211_bss_conf
*bss_conf
,
1468 (BSS_CHANGED_ASSOC | \
1469 BSS_CHANGED_IBSS | \
1470 BSS_CHANGED_BEACON_ENABLED)
1472 struct ath_softc
*sc
= hw
->priv
;
1473 struct ath_hw
*ah
= sc
->sc_ah
;
1474 struct ath_common
*common
= ath9k_hw_common(ah
);
1475 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1478 ath9k_ps_wakeup(sc
);
1479 mutex_lock(&sc
->mutex
);
1481 if (changed
& BSS_CHANGED_ASSOC
) {
1482 ath_dbg(common
, CONFIG
, "BSSID %pM Changed ASSOC %d\n",
1483 bss_conf
->bssid
, bss_conf
->assoc
);
1485 if (avp
->primary_sta_vif
&& !bss_conf
->assoc
) {
1486 clear_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
);
1487 avp
->primary_sta_vif
= false;
1489 if (ah
->opmode
== NL80211_IFTYPE_STATION
)
1490 clear_bit(SC_OP_BEACONS
, &sc
->sc_flags
);
1493 ieee80211_iterate_active_interfaces_atomic(
1494 sc
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
1495 ath9k_bss_assoc_iter
, sc
);
1497 if (!test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
) &&
1498 ah
->opmode
== NL80211_IFTYPE_STATION
) {
1499 memset(common
->curbssid
, 0, ETH_ALEN
);
1501 ath9k_hw_write_associd(sc
->sc_ah
);
1502 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
))
1503 ath9k_mci_update_wlan_channels(sc
, true);
1507 if (changed
& BSS_CHANGED_IBSS
) {
1508 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
1509 common
->curaid
= bss_conf
->aid
;
1510 ath9k_hw_write_associd(sc
->sc_ah
);
1513 if ((changed
& BSS_CHANGED_BEACON_ENABLED
) ||
1514 (changed
& BSS_CHANGED_BEACON_INT
)) {
1515 if (ah
->opmode
== NL80211_IFTYPE_AP
&&
1516 bss_conf
->enable_beacon
)
1517 ath9k_set_tsfadjust(sc
, vif
);
1518 if (ath9k_allow_beacon_config(sc
, vif
))
1519 ath9k_beacon_config(sc
, vif
, changed
);
1522 if (changed
& BSS_CHANGED_ERP_SLOT
) {
1523 if (bss_conf
->use_short_slot
)
1527 if (vif
->type
== NL80211_IFTYPE_AP
) {
1529 * Defer update, so that connected stations can adjust
1530 * their settings at the same time.
1531 * See beacon.c for more details
1533 sc
->beacon
.slottime
= slottime
;
1534 sc
->beacon
.updateslot
= UPDATE
;
1536 ah
->slottime
= slottime
;
1537 ath9k_hw_init_global_settings(ah
);
1541 if (changed
& CHECK_ANI
)
1544 mutex_unlock(&sc
->mutex
);
1545 ath9k_ps_restore(sc
);
1550 static u64
ath9k_get_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
1552 struct ath_softc
*sc
= hw
->priv
;
1555 mutex_lock(&sc
->mutex
);
1556 ath9k_ps_wakeup(sc
);
1557 tsf
= ath9k_hw_gettsf64(sc
->sc_ah
);
1558 ath9k_ps_restore(sc
);
1559 mutex_unlock(&sc
->mutex
);
1564 static void ath9k_set_tsf(struct ieee80211_hw
*hw
,
1565 struct ieee80211_vif
*vif
,
1568 struct ath_softc
*sc
= hw
->priv
;
1570 mutex_lock(&sc
->mutex
);
1571 ath9k_ps_wakeup(sc
);
1572 ath9k_hw_settsf64(sc
->sc_ah
, tsf
);
1573 ath9k_ps_restore(sc
);
1574 mutex_unlock(&sc
->mutex
);
1577 static void ath9k_reset_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
1579 struct ath_softc
*sc
= hw
->priv
;
1581 mutex_lock(&sc
->mutex
);
1583 ath9k_ps_wakeup(sc
);
1584 ath9k_hw_reset_tsf(sc
->sc_ah
);
1585 ath9k_ps_restore(sc
);
1587 mutex_unlock(&sc
->mutex
);
1590 static int ath9k_ampdu_action(struct ieee80211_hw
*hw
,
1591 struct ieee80211_vif
*vif
,
1592 enum ieee80211_ampdu_mlme_action action
,
1593 struct ieee80211_sta
*sta
,
1594 u16 tid
, u16
*ssn
, u8 buf_size
)
1596 struct ath_softc
*sc
= hw
->priv
;
1602 case IEEE80211_AMPDU_RX_START
:
1604 case IEEE80211_AMPDU_RX_STOP
:
1606 case IEEE80211_AMPDU_TX_START
:
1607 ath9k_ps_wakeup(sc
);
1608 ret
= ath_tx_aggr_start(sc
, sta
, tid
, ssn
);
1610 ieee80211_start_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1611 ath9k_ps_restore(sc
);
1613 case IEEE80211_AMPDU_TX_STOP
:
1614 ath9k_ps_wakeup(sc
);
1615 ath_tx_aggr_stop(sc
, sta
, tid
);
1616 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1617 ath9k_ps_restore(sc
);
1619 case IEEE80211_AMPDU_TX_OPERATIONAL
:
1620 ath9k_ps_wakeup(sc
);
1621 ath_tx_aggr_resume(sc
, sta
, tid
);
1622 ath9k_ps_restore(sc
);
1625 ath_err(ath9k_hw_common(sc
->sc_ah
), "Unknown AMPDU action\n");
1633 static int ath9k_get_survey(struct ieee80211_hw
*hw
, int idx
,
1634 struct survey_info
*survey
)
1636 struct ath_softc
*sc
= hw
->priv
;
1637 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1638 struct ieee80211_supported_band
*sband
;
1639 struct ieee80211_channel
*chan
;
1640 unsigned long flags
;
1643 spin_lock_irqsave(&common
->cc_lock
, flags
);
1645 ath_update_survey_stats(sc
);
1647 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
];
1648 if (sband
&& idx
>= sband
->n_channels
) {
1649 idx
-= sband
->n_channels
;
1654 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
];
1656 if (!sband
|| idx
>= sband
->n_channels
) {
1657 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1661 chan
= &sband
->channels
[idx
];
1662 pos
= chan
->hw_value
;
1663 memcpy(survey
, &sc
->survey
[pos
], sizeof(*survey
));
1664 survey
->channel
= chan
;
1665 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1670 static void ath9k_set_coverage_class(struct ieee80211_hw
*hw
, u8 coverage_class
)
1672 struct ath_softc
*sc
= hw
->priv
;
1673 struct ath_hw
*ah
= sc
->sc_ah
;
1675 mutex_lock(&sc
->mutex
);
1676 ah
->coverage_class
= coverage_class
;
1678 ath9k_ps_wakeup(sc
);
1679 ath9k_hw_init_global_settings(ah
);
1680 ath9k_ps_restore(sc
);
1682 mutex_unlock(&sc
->mutex
);
1685 static void ath9k_flush(struct ieee80211_hw
*hw
, bool drop
)
1687 struct ath_softc
*sc
= hw
->priv
;
1688 struct ath_hw
*ah
= sc
->sc_ah
;
1689 struct ath_common
*common
= ath9k_hw_common(ah
);
1690 int timeout
= 200; /* ms */
1694 mutex_lock(&sc
->mutex
);
1695 cancel_delayed_work_sync(&sc
->tx_complete_work
);
1697 if (ah
->ah_flags
& AH_UNPLUGGED
) {
1698 ath_dbg(common
, ANY
, "Device has been unplugged!\n");
1699 mutex_unlock(&sc
->mutex
);
1703 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
)) {
1704 ath_dbg(common
, ANY
, "Device not present\n");
1705 mutex_unlock(&sc
->mutex
);
1709 for (j
= 0; j
< timeout
; j
++) {
1713 usleep_range(1000, 2000);
1715 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
1716 if (!ATH_TXQ_SETUP(sc
, i
))
1719 npend
= ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]);
1730 ath9k_ps_wakeup(sc
);
1731 spin_lock_bh(&sc
->sc_pcu_lock
);
1732 drain_txq
= ath_drain_all_txq(sc
, false);
1733 spin_unlock_bh(&sc
->sc_pcu_lock
);
1736 ath_reset(sc
, false);
1738 ath9k_ps_restore(sc
);
1739 ieee80211_wake_queues(hw
);
1742 ieee80211_queue_delayed_work(hw
, &sc
->tx_complete_work
, 0);
1743 mutex_unlock(&sc
->mutex
);
1746 static bool ath9k_tx_frames_pending(struct ieee80211_hw
*hw
)
1748 struct ath_softc
*sc
= hw
->priv
;
1751 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
1752 if (!ATH_TXQ_SETUP(sc
, i
))
1755 if (ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]))
1761 static int ath9k_tx_last_beacon(struct ieee80211_hw
*hw
)
1763 struct ath_softc
*sc
= hw
->priv
;
1764 struct ath_hw
*ah
= sc
->sc_ah
;
1765 struct ieee80211_vif
*vif
;
1766 struct ath_vif
*avp
;
1768 struct ath_tx_status ts
;
1769 bool edma
= !!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
);
1772 vif
= sc
->beacon
.bslot
[0];
1776 if (!vif
->bss_conf
.enable_beacon
)
1779 avp
= (void *)vif
->drv_priv
;
1781 if (!sc
->beacon
.tx_processed
&& !edma
) {
1782 tasklet_disable(&sc
->bcon_tasklet
);
1785 if (!bf
|| !bf
->bf_mpdu
)
1788 status
= ath9k_hw_txprocdesc(ah
, bf
->bf_desc
, &ts
);
1789 if (status
== -EINPROGRESS
)
1792 sc
->beacon
.tx_processed
= true;
1793 sc
->beacon
.tx_last
= !(ts
.ts_status
& ATH9K_TXERR_MASK
);
1796 tasklet_enable(&sc
->bcon_tasklet
);
1799 return sc
->beacon
.tx_last
;
1802 static int ath9k_get_stats(struct ieee80211_hw
*hw
,
1803 struct ieee80211_low_level_stats
*stats
)
1805 struct ath_softc
*sc
= hw
->priv
;
1806 struct ath_hw
*ah
= sc
->sc_ah
;
1807 struct ath9k_mib_stats
*mib_stats
= &ah
->ah_mibStats
;
1809 stats
->dot11ACKFailureCount
= mib_stats
->ackrcv_bad
;
1810 stats
->dot11RTSFailureCount
= mib_stats
->rts_bad
;
1811 stats
->dot11FCSErrorCount
= mib_stats
->fcs_bad
;
1812 stats
->dot11RTSSuccessCount
= mib_stats
->rts_good
;
1816 static u32
fill_chainmask(u32 cap
, u32
new)
1821 for (i
= 0; cap
&& new; i
++, cap
>>= 1) {
1822 if (!(cap
& BIT(0)))
1834 static bool validate_antenna_mask(struct ath_hw
*ah
, u32 val
)
1836 switch (val
& 0x7) {
1842 return (ah
->caps
.rx_chainmask
== 1);
1848 static int ath9k_set_antenna(struct ieee80211_hw
*hw
, u32 tx_ant
, u32 rx_ant
)
1850 struct ath_softc
*sc
= hw
->priv
;
1851 struct ath_hw
*ah
= sc
->sc_ah
;
1853 if (ah
->caps
.rx_chainmask
!= 1)
1856 if (!validate_antenna_mask(ah
, rx_ant
) || !tx_ant
)
1859 sc
->ant_rx
= rx_ant
;
1860 sc
->ant_tx
= tx_ant
;
1862 if (ah
->caps
.rx_chainmask
== 1)
1865 /* AR9100 runs into calibration issues if not all rx chains are enabled */
1866 if (AR_SREV_9100(ah
))
1867 ah
->rxchainmask
= 0x7;
1869 ah
->rxchainmask
= fill_chainmask(ah
->caps
.rx_chainmask
, rx_ant
);
1871 ah
->txchainmask
= fill_chainmask(ah
->caps
.tx_chainmask
, tx_ant
);
1872 ath9k_reload_chainmask_settings(sc
);
1877 static int ath9k_get_antenna(struct ieee80211_hw
*hw
, u32
*tx_ant
, u32
*rx_ant
)
1879 struct ath_softc
*sc
= hw
->priv
;
1881 *tx_ant
= sc
->ant_tx
;
1882 *rx_ant
= sc
->ant_rx
;
1886 #ifdef CONFIG_PM_SLEEP
1888 static void ath9k_wow_map_triggers(struct ath_softc
*sc
,
1889 struct cfg80211_wowlan
*wowlan
,
1892 if (wowlan
->disconnect
)
1893 *wow_triggers
|= AH_WOW_LINK_CHANGE
|
1895 if (wowlan
->magic_pkt
)
1896 *wow_triggers
|= AH_WOW_MAGIC_PATTERN_EN
;
1898 if (wowlan
->n_patterns
)
1899 *wow_triggers
|= AH_WOW_USER_PATTERN_EN
;
1901 sc
->wow_enabled
= *wow_triggers
;
1905 static void ath9k_wow_add_disassoc_deauth_pattern(struct ath_softc
*sc
)
1907 struct ath_hw
*ah
= sc
->sc_ah
;
1908 struct ath_common
*common
= ath9k_hw_common(ah
);
1909 struct ath9k_hw_capabilities
*pcaps
= &ah
->caps
;
1910 int pattern_count
= 0;
1912 u8 dis_deauth_pattern
[MAX_PATTERN_SIZE
];
1913 u8 dis_deauth_mask
[MAX_PATTERN_SIZE
];
1915 memset(dis_deauth_pattern
, 0, MAX_PATTERN_SIZE
);
1916 memset(dis_deauth_mask
, 0, MAX_PATTERN_SIZE
);
1919 * Create Dissassociate / Deauthenticate packet filter
1921 * 2 bytes 2 byte 6 bytes 6 bytes 6 bytes
1922 * +--------------+----------+---------+--------+--------+----
1923 * + Frame Control+ Duration + DA + SA + BSSID +
1924 * +--------------+----------+---------+--------+--------+----
1926 * The above is the management frame format for disassociate/
1927 * deauthenticate pattern, from this we need to match the first byte
1928 * of 'Frame Control' and DA, SA, and BSSID fields
1929 * (skipping 2nd byte of FC and Duration feild.
1931 * Disassociate pattern
1932 * --------------------
1933 * Frame control = 00 00 1010
1934 * DA, SA, BSSID = x:x:x:x:x:x
1935 * Pattern will be A0000000 | x:x:x:x:x:x | x:x:x:x:x:x
1936 * | x:x:x:x:x:x -- 22 bytes
1938 * Deauthenticate pattern
1939 * ----------------------
1940 * Frame control = 00 00 1100
1941 * DA, SA, BSSID = x:x:x:x:x:x
1942 * Pattern will be C0000000 | x:x:x:x:x:x | x:x:x:x:x:x
1943 * | x:x:x:x:x:x -- 22 bytes
1946 /* Create Disassociate Pattern first */
1950 /* Fill out the mask with all FF's */
1952 for (i
= 0; i
< MAX_PATTERN_MASK_SIZE
; i
++)
1953 dis_deauth_mask
[i
] = 0xff;
1955 /* copy the first byte of frame control field */
1956 dis_deauth_pattern
[byte_cnt
] = 0xa0;
1959 /* skip 2nd byte of frame control and Duration field */
1963 * need not match the destination mac address, it can be a broadcast
1964 * mac address or an unicast to this station
1968 /* copy the source mac address */
1969 memcpy((dis_deauth_pattern
+ byte_cnt
), common
->curbssid
, ETH_ALEN
);
1973 /* copy the bssid, its same as the source mac address */
1975 memcpy((dis_deauth_pattern
+ byte_cnt
), common
->curbssid
, ETH_ALEN
);
1977 /* Create Disassociate pattern mask */
1979 if (pcaps
->hw_caps
& ATH9K_HW_WOW_PATTERN_MATCH_EXACT
) {
1981 if (pcaps
->hw_caps
& ATH9K_HW_WOW_PATTERN_MATCH_DWORD
) {
1983 * for AR9280, because of hardware limitation, the
1984 * first 4 bytes have to be matched for all patterns.
1985 * the mask for disassociation and de-auth pattern
1986 * matching need to enable the first 4 bytes.
1987 * also the duration field needs to be filled.
1989 dis_deauth_mask
[0] = 0xf0;
1992 * fill in duration field
1993 FIXME: what is the exact value ?
1995 dis_deauth_pattern
[2] = 0xff;
1996 dis_deauth_pattern
[3] = 0xff;
1998 dis_deauth_mask
[0] = 0xfe;
2001 dis_deauth_mask
[1] = 0x03;
2002 dis_deauth_mask
[2] = 0xc0;
2004 dis_deauth_mask
[0] = 0xef;
2005 dis_deauth_mask
[1] = 0x3f;
2006 dis_deauth_mask
[2] = 0x00;
2007 dis_deauth_mask
[3] = 0xfc;
2010 ath_dbg(common
, WOW
, "Adding disassoc/deauth patterns for WoW\n");
2012 ath9k_hw_wow_apply_pattern(ah
, dis_deauth_pattern
, dis_deauth_mask
,
2013 pattern_count
, byte_cnt
);
2017 * for de-authenticate pattern, only the first byte of the frame
2018 * control field gets changed from 0xA0 to 0xC0
2020 dis_deauth_pattern
[0] = 0xC0;
2022 ath9k_hw_wow_apply_pattern(ah
, dis_deauth_pattern
, dis_deauth_mask
,
2023 pattern_count
, byte_cnt
);
2027 static void ath9k_wow_add_pattern(struct ath_softc
*sc
,
2028 struct cfg80211_wowlan
*wowlan
)
2030 struct ath_hw
*ah
= sc
->sc_ah
;
2031 struct ath9k_wow_pattern
*wow_pattern
= NULL
;
2032 struct cfg80211_wowlan_trig_pkt_pattern
*patterns
= wowlan
->patterns
;
2036 if (!wowlan
->n_patterns
)
2040 * Add the new user configured patterns
2042 for (i
= 0; i
< wowlan
->n_patterns
; i
++) {
2044 wow_pattern
= kzalloc(sizeof(*wow_pattern
), GFP_KERNEL
);
2050 * TODO: convert the generic user space pattern to
2051 * appropriate chip specific/802.11 pattern.
2054 mask_len
= DIV_ROUND_UP(wowlan
->patterns
[i
].pattern_len
, 8);
2055 memset(wow_pattern
->pattern_bytes
, 0, MAX_PATTERN_SIZE
);
2056 memset(wow_pattern
->mask_bytes
, 0, MAX_PATTERN_SIZE
);
2057 memcpy(wow_pattern
->pattern_bytes
, patterns
[i
].pattern
,
2058 patterns
[i
].pattern_len
);
2059 memcpy(wow_pattern
->mask_bytes
, patterns
[i
].mask
, mask_len
);
2060 wow_pattern
->pattern_len
= patterns
[i
].pattern_len
;
2063 * just need to take care of deauth and disssoc pattern,
2064 * make sure we don't overwrite them.
2067 ath9k_hw_wow_apply_pattern(ah
, wow_pattern
->pattern_bytes
,
2068 wow_pattern
->mask_bytes
,
2070 wow_pattern
->pattern_len
);
2077 static int ath9k_suspend(struct ieee80211_hw
*hw
,
2078 struct cfg80211_wowlan
*wowlan
)
2080 struct ath_softc
*sc
= hw
->priv
;
2081 struct ath_hw
*ah
= sc
->sc_ah
;
2082 struct ath_common
*common
= ath9k_hw_common(ah
);
2083 u32 wow_triggers_enabled
= 0;
2086 mutex_lock(&sc
->mutex
);
2088 ath_cancel_work(sc
);
2090 del_timer_sync(&sc
->rx_poll_timer
);
2092 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
)) {
2093 ath_dbg(common
, ANY
, "Device not present\n");
2098 if (WARN_ON(!wowlan
)) {
2099 ath_dbg(common
, WOW
, "None of the WoW triggers enabled\n");
2104 if (!device_can_wakeup(sc
->dev
)) {
2105 ath_dbg(common
, WOW
, "device_can_wakeup failed, WoW is not enabled\n");
2111 * none of the sta vifs are associated
2112 * and we are not currently handling multivif
2113 * cases, for instance we have to seperately
2114 * configure 'keep alive frame' for each
2118 if (!test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
)) {
2119 ath_dbg(common
, WOW
, "None of the STA vifs are associated\n");
2124 if (sc
->nvifs
> 1) {
2125 ath_dbg(common
, WOW
, "WoW for multivif is not yet supported\n");
2130 ath9k_wow_map_triggers(sc
, wowlan
, &wow_triggers_enabled
);
2132 ath_dbg(common
, WOW
, "WoW triggers enabled 0x%x\n",
2133 wow_triggers_enabled
);
2135 ath9k_ps_wakeup(sc
);
2137 ath9k_stop_btcoex(sc
);
2140 * Enable wake up on recieving disassoc/deauth
2143 ath9k_wow_add_disassoc_deauth_pattern(sc
);
2145 if (wow_triggers_enabled
& AH_WOW_USER_PATTERN_EN
)
2146 ath9k_wow_add_pattern(sc
, wowlan
);
2148 spin_lock_bh(&sc
->sc_pcu_lock
);
2150 * To avoid false wake, we enable beacon miss interrupt only
2151 * when we go to sleep. We save the current interrupt mask
2152 * so we can restore it after the system wakes up
2154 sc
->wow_intr_before_sleep
= ah
->imask
;
2155 ah
->imask
&= ~ATH9K_INT_GLOBAL
;
2156 ath9k_hw_disable_interrupts(ah
);
2157 ah
->imask
= ATH9K_INT_BMISS
| ATH9K_INT_GLOBAL
;
2158 ath9k_hw_set_interrupts(ah
);
2159 ath9k_hw_enable_interrupts(ah
);
2161 spin_unlock_bh(&sc
->sc_pcu_lock
);
2164 * we can now sync irq and kill any running tasklets, since we already
2165 * disabled interrupts and not holding a spin lock
2167 synchronize_irq(sc
->irq
);
2168 tasklet_kill(&sc
->intr_tq
);
2170 ath9k_hw_wow_enable(ah
, wow_triggers_enabled
);
2172 ath9k_ps_restore(sc
);
2173 ath_dbg(common
, ANY
, "WoW enabled in ath9k\n");
2174 atomic_inc(&sc
->wow_sleep_proc_intr
);
2177 mutex_unlock(&sc
->mutex
);
2181 static int ath9k_resume(struct ieee80211_hw
*hw
)
2183 struct ath_softc
*sc
= hw
->priv
;
2184 struct ath_hw
*ah
= sc
->sc_ah
;
2185 struct ath_common
*common
= ath9k_hw_common(ah
);
2188 mutex_lock(&sc
->mutex
);
2190 ath9k_ps_wakeup(sc
);
2192 spin_lock_bh(&sc
->sc_pcu_lock
);
2194 ath9k_hw_disable_interrupts(ah
);
2195 ah
->imask
= sc
->wow_intr_before_sleep
;
2196 ath9k_hw_set_interrupts(ah
);
2197 ath9k_hw_enable_interrupts(ah
);
2199 spin_unlock_bh(&sc
->sc_pcu_lock
);
2201 wow_status
= ath9k_hw_wow_wakeup(ah
);
2203 if (atomic_read(&sc
->wow_got_bmiss_intr
) == 0) {
2205 * some devices may not pick beacon miss
2206 * as the reason they woke up so we add
2207 * that here for that shortcoming.
2209 wow_status
|= AH_WOW_BEACON_MISS
;
2210 atomic_dec(&sc
->wow_got_bmiss_intr
);
2211 ath_dbg(common
, ANY
, "Beacon miss interrupt picked up during WoW sleep\n");
2214 atomic_dec(&sc
->wow_sleep_proc_intr
);
2217 ath_dbg(common
, ANY
, "Waking up due to WoW triggers %s with WoW status = %x\n",
2218 ath9k_hw_wow_event_to_string(wow_status
), wow_status
);
2221 ath_restart_work(sc
);
2222 ath9k_start_btcoex(sc
);
2224 ath9k_ps_restore(sc
);
2225 mutex_unlock(&sc
->mutex
);
2230 static void ath9k_set_wakeup(struct ieee80211_hw
*hw
, bool enabled
)
2232 struct ath_softc
*sc
= hw
->priv
;
2234 mutex_lock(&sc
->mutex
);
2235 device_init_wakeup(sc
->dev
, 1);
2236 device_set_wakeup_enable(sc
->dev
, enabled
);
2237 mutex_unlock(&sc
->mutex
);
2242 struct ieee80211_ops ath9k_ops
= {
2244 .start
= ath9k_start
,
2246 .add_interface
= ath9k_add_interface
,
2247 .change_interface
= ath9k_change_interface
,
2248 .remove_interface
= ath9k_remove_interface
,
2249 .config
= ath9k_config
,
2250 .configure_filter
= ath9k_configure_filter
,
2251 .sta_add
= ath9k_sta_add
,
2252 .sta_remove
= ath9k_sta_remove
,
2253 .sta_notify
= ath9k_sta_notify
,
2254 .conf_tx
= ath9k_conf_tx
,
2255 .bss_info_changed
= ath9k_bss_info_changed
,
2256 .set_key
= ath9k_set_key
,
2257 .get_tsf
= ath9k_get_tsf
,
2258 .set_tsf
= ath9k_set_tsf
,
2259 .reset_tsf
= ath9k_reset_tsf
,
2260 .ampdu_action
= ath9k_ampdu_action
,
2261 .get_survey
= ath9k_get_survey
,
2262 .rfkill_poll
= ath9k_rfkill_poll_state
,
2263 .set_coverage_class
= ath9k_set_coverage_class
,
2264 .flush
= ath9k_flush
,
2265 .tx_frames_pending
= ath9k_tx_frames_pending
,
2266 .tx_last_beacon
= ath9k_tx_last_beacon
,
2267 .get_stats
= ath9k_get_stats
,
2268 .set_antenna
= ath9k_set_antenna
,
2269 .get_antenna
= ath9k_get_antenna
,
2271 #ifdef CONFIG_PM_SLEEP
2272 .suspend
= ath9k_suspend
,
2273 .resume
= ath9k_resume
,
2274 .set_wakeup
= ath9k_set_wakeup
,
2277 #ifdef CONFIG_ATH9K_DEBUGFS
2278 .get_et_sset_count
= ath9k_get_et_sset_count
,
2279 .get_et_stats
= ath9k_get_et_stats
,
2280 .get_et_strings
= ath9k_get_et_strings
,
2283 #if defined(CONFIG_MAC80211_DEBUGFS) && defined(CONFIG_ATH9K_DEBUGFS)
2284 .sta_add_debugfs
= ath9k_sta_add_debugfs
,
2285 .sta_remove_debugfs
= ath9k_sta_remove_debugfs
,