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 u8
ath9k_parse_mpdudensity(u8 mpdudensity
)
25 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
26 * 0 for no restriction
35 switch (mpdudensity
) {
41 /* Our lower layer calculations limit our precision to
57 static bool ath9k_has_pending_frames(struct ath_softc
*sc
, struct ath_txq
*txq
,
62 spin_lock_bh(&txq
->axq_lock
);
72 if (txq
->mac80211_qnum
>= 0) {
73 struct list_head
*list
;
75 list
= &sc
->cur_chan
->acq
[txq
->mac80211_qnum
];
76 if (!list_empty(list
))
80 spin_unlock_bh(&txq
->axq_lock
);
84 static bool ath9k_setpower(struct ath_softc
*sc
, enum ath9k_power_mode mode
)
89 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
90 ret
= ath9k_hw_setpower(sc
->sc_ah
, mode
);
91 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
96 void ath_ps_full_sleep(unsigned long data
)
98 struct ath_softc
*sc
= (struct ath_softc
*) data
;
99 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
102 spin_lock(&common
->cc_lock
);
103 ath_hw_cycle_counters_update(common
);
104 spin_unlock(&common
->cc_lock
);
106 ath9k_hw_setrxabort(sc
->sc_ah
, 1);
107 ath9k_hw_stopdmarecv(sc
->sc_ah
, &reset
);
109 ath9k_hw_setpower(sc
->sc_ah
, ATH9K_PM_FULL_SLEEP
);
112 void ath9k_ps_wakeup(struct ath_softc
*sc
)
114 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
116 enum ath9k_power_mode power_mode
;
118 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
119 if (++sc
->ps_usecount
!= 1)
122 del_timer_sync(&sc
->sleep_timer
);
123 power_mode
= sc
->sc_ah
->power_mode
;
124 ath9k_hw_setpower(sc
->sc_ah
, ATH9K_PM_AWAKE
);
127 * While the hardware is asleep, the cycle counters contain no
128 * useful data. Better clear them now so that they don't mess up
129 * survey data results.
131 if (power_mode
!= ATH9K_PM_AWAKE
) {
132 spin_lock(&common
->cc_lock
);
133 ath_hw_cycle_counters_update(common
);
134 memset(&common
->cc_survey
, 0, sizeof(common
->cc_survey
));
135 memset(&common
->cc_ani
, 0, sizeof(common
->cc_ani
));
136 spin_unlock(&common
->cc_lock
);
140 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
143 void ath9k_ps_restore(struct ath_softc
*sc
)
145 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
146 enum ath9k_power_mode mode
;
149 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
150 if (--sc
->ps_usecount
!= 0)
154 mod_timer(&sc
->sleep_timer
, jiffies
+ HZ
/ 10);
158 if (sc
->ps_enabled
&&
159 !(sc
->ps_flags
& (PS_WAIT_FOR_BEACON
|
161 PS_WAIT_FOR_PSPOLL_DATA
|
164 mode
= ATH9K_PM_NETWORK_SLEEP
;
165 if (ath9k_hw_btcoex_is_enabled(sc
->sc_ah
))
166 ath9k_btcoex_stop_gen_timer(sc
);
171 spin_lock(&common
->cc_lock
);
172 ath_hw_cycle_counters_update(common
);
173 spin_unlock(&common
->cc_lock
);
175 ath9k_hw_setpower(sc
->sc_ah
, mode
);
178 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
181 static void __ath_cancel_work(struct ath_softc
*sc
)
183 cancel_work_sync(&sc
->paprd_work
);
184 cancel_delayed_work_sync(&sc
->tx_complete_work
);
185 cancel_delayed_work_sync(&sc
->hw_pll_work
);
187 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
188 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
))
189 cancel_work_sync(&sc
->mci_work
);
193 void ath_cancel_work(struct ath_softc
*sc
)
195 __ath_cancel_work(sc
);
196 cancel_work_sync(&sc
->hw_reset_work
);
199 void ath_restart_work(struct ath_softc
*sc
)
201 ieee80211_queue_delayed_work(sc
->hw
, &sc
->tx_complete_work
, 0);
203 if (AR_SREV_9340(sc
->sc_ah
) || AR_SREV_9330(sc
->sc_ah
))
204 ieee80211_queue_delayed_work(sc
->hw
, &sc
->hw_pll_work
,
205 msecs_to_jiffies(ATH_PLL_WORK_INTERVAL
));
210 static bool ath_prepare_reset(struct ath_softc
*sc
)
212 struct ath_hw
*ah
= sc
->sc_ah
;
215 ieee80211_stop_queues(sc
->hw
);
217 ath9k_hw_disable_interrupts(ah
);
219 if (AR_SREV_9300_20_OR_LATER(ah
)) {
220 ret
&= ath_stoprecv(sc
);
221 ret
&= ath_drain_all_txq(sc
);
223 ret
&= ath_drain_all_txq(sc
);
224 ret
&= ath_stoprecv(sc
);
230 static bool ath_complete_reset(struct ath_softc
*sc
, bool start
)
232 struct ath_hw
*ah
= sc
->sc_ah
;
233 struct ath_common
*common
= ath9k_hw_common(ah
);
236 ath9k_calculate_summary_state(sc
, sc
->cur_chan
);
238 ath9k_cmn_update_txpow(ah
, sc
->cur_chan
->cur_txpower
,
239 sc
->cur_chan
->txpower
,
240 &sc
->cur_chan
->cur_txpower
);
241 clear_bit(ATH_OP_HW_RESET
, &common
->op_flags
);
243 if (!sc
->cur_chan
->offchannel
&& start
) {
244 /* restore per chanctx TSF timer */
245 if (sc
->cur_chan
->tsf_val
) {
248 offset
= ath9k_hw_get_tsf_offset(&sc
->cur_chan
->tsf_ts
,
250 ath9k_hw_settsf64(ah
, sc
->cur_chan
->tsf_val
+ offset
);
254 if (!test_bit(ATH_OP_BEACONS
, &common
->op_flags
))
257 if (ah
->opmode
== NL80211_IFTYPE_STATION
&&
258 test_bit(ATH_OP_PRIM_STA_VIF
, &common
->op_flags
)) {
259 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
260 sc
->ps_flags
|= PS_BEACON_SYNC
| PS_WAIT_FOR_BEACON
;
261 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
263 ath9k_set_beacon(sc
);
266 ath_restart_work(sc
);
267 ath_txq_schedule_all(sc
);
272 ath9k_hw_set_interrupts(ah
);
273 ath9k_hw_enable_interrupts(ah
);
274 ieee80211_wake_queues(sc
->hw
);
275 ath9k_p2p_ps_timer(sc
);
280 static int ath_reset_internal(struct ath_softc
*sc
, struct ath9k_channel
*hchan
)
282 struct ath_hw
*ah
= sc
->sc_ah
;
283 struct ath_common
*common
= ath9k_hw_common(ah
);
284 struct ath9k_hw_cal_data
*caldata
= NULL
;
288 __ath_cancel_work(sc
);
290 disable_irq(sc
->irq
);
291 tasklet_disable(&sc
->intr_tq
);
292 tasklet_disable(&sc
->bcon_tasklet
);
293 spin_lock_bh(&sc
->sc_pcu_lock
);
295 if (!sc
->cur_chan
->offchannel
) {
297 caldata
= &sc
->cur_chan
->caldata
;
305 if (!ath_prepare_reset(sc
))
308 if (ath9k_is_chanctx_enabled())
311 spin_lock_bh(&sc
->chan_lock
);
312 sc
->cur_chandef
= sc
->cur_chan
->chandef
;
313 spin_unlock_bh(&sc
->chan_lock
);
315 ath_dbg(common
, CONFIG
, "Reset to %u MHz, HT40: %d fastcc: %d\n",
316 hchan
->channel
, IS_CHAN_HT40(hchan
), fastcc
);
318 r
= ath9k_hw_reset(ah
, hchan
, caldata
, fastcc
);
321 "Unable to reset channel, reset status %d\n", r
);
323 ath9k_hw_enable_interrupts(ah
);
324 ath9k_queue_reset(sc
, RESET_TYPE_BB_HANG
);
329 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
) &&
330 sc
->cur_chan
->offchannel
)
331 ath9k_mci_set_txpower(sc
, true, false);
333 if (!ath_complete_reset(sc
, true))
338 spin_unlock_bh(&sc
->sc_pcu_lock
);
339 tasklet_enable(&sc
->bcon_tasklet
);
340 tasklet_enable(&sc
->intr_tq
);
345 static void ath_node_attach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
,
346 struct ieee80211_vif
*vif
)
349 an
= (struct ath_node
*)sta
->drv_priv
;
354 memset(&an
->key_idx
, 0, sizeof(an
->key_idx
));
356 ath_tx_node_init(sc
, an
);
358 ath_dynack_node_init(sc
->sc_ah
, an
);
361 static void ath_node_detach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
)
363 struct ath_node
*an
= (struct ath_node
*)sta
->drv_priv
;
364 ath_tx_node_cleanup(sc
, an
);
366 ath_dynack_node_deinit(sc
->sc_ah
, an
);
369 void ath9k_tasklet(unsigned long data
)
371 struct ath_softc
*sc
= (struct ath_softc
*)data
;
372 struct ath_hw
*ah
= sc
->sc_ah
;
373 struct ath_common
*common
= ath9k_hw_common(ah
);
374 enum ath_reset_type type
;
376 u32 status
= sc
->intrstatus
;
380 spin_lock(&sc
->sc_pcu_lock
);
382 if (status
& ATH9K_INT_FATAL
) {
383 type
= RESET_TYPE_FATAL_INT
;
384 ath9k_queue_reset(sc
, type
);
387 * Increment the ref. counter here so that
388 * interrupts are enabled in the reset routine.
390 atomic_inc(&ah
->intr_ref_cnt
);
391 ath_dbg(common
, RESET
, "FATAL: Skipping interrupts\n");
395 if ((ah
->config
.hw_hang_checks
& HW_BB_WATCHDOG
) &&
396 (status
& ATH9K_INT_BB_WATCHDOG
)) {
397 spin_lock(&common
->cc_lock
);
398 ath_hw_cycle_counters_update(common
);
399 ar9003_hw_bb_watchdog_dbg_info(ah
);
400 spin_unlock(&common
->cc_lock
);
402 if (ar9003_hw_bb_watchdog_check(ah
)) {
403 type
= RESET_TYPE_BB_WATCHDOG
;
404 ath9k_queue_reset(sc
, type
);
407 * Increment the ref. counter here so that
408 * interrupts are enabled in the reset routine.
410 atomic_inc(&ah
->intr_ref_cnt
);
411 ath_dbg(common
, RESET
,
412 "BB_WATCHDOG: Skipping interrupts\n");
417 if (status
& ATH9K_INT_GTT
) {
420 if ((sc
->gtt_cnt
>= MAX_GTT_CNT
) && !ath9k_hw_check_alive(ah
)) {
421 type
= RESET_TYPE_TX_GTT
;
422 ath9k_queue_reset(sc
, type
);
423 atomic_inc(&ah
->intr_ref_cnt
);
424 ath_dbg(common
, RESET
,
425 "GTT: Skipping interrupts\n");
430 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
431 if ((status
& ATH9K_INT_TSFOOR
) && sc
->ps_enabled
) {
433 * TSF sync does not look correct; remain awake to sync with
436 ath_dbg(common
, PS
, "TSFOOR - Sync with next Beacon\n");
437 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
| PS_BEACON_SYNC
;
439 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
441 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
442 rxmask
= (ATH9K_INT_RXHP
| ATH9K_INT_RXLP
| ATH9K_INT_RXEOL
|
445 rxmask
= (ATH9K_INT_RX
| ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
447 if (status
& rxmask
) {
448 /* Check for high priority Rx first */
449 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
450 (status
& ATH9K_INT_RXHP
))
451 ath_rx_tasklet(sc
, 0, true);
453 ath_rx_tasklet(sc
, 0, false);
456 if (status
& ATH9K_INT_TX
) {
457 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) {
459 * For EDMA chips, TX completion is enabled for the
460 * beacon queue, so if a beacon has been transmitted
461 * successfully after a GTT interrupt, the GTT counter
462 * gets reset to zero here.
466 ath_tx_edma_tasklet(sc
);
471 wake_up(&sc
->tx_wait
);
474 if (status
& ATH9K_INT_GENTIMER
)
475 ath_gen_timer_isr(sc
->sc_ah
);
477 ath9k_btcoex_handle_interrupt(sc
, status
);
479 /* re-enable hardware interrupt */
480 ath9k_hw_enable_interrupts(ah
);
482 spin_unlock(&sc
->sc_pcu_lock
);
483 ath9k_ps_restore(sc
);
486 irqreturn_t
ath_isr(int irq
, void *dev
)
488 #define SCHED_INTR ( \
490 ATH9K_INT_BB_WATCHDOG | \
501 ATH9K_INT_GENTIMER | \
504 struct ath_softc
*sc
= dev
;
505 struct ath_hw
*ah
= sc
->sc_ah
;
506 struct ath_common
*common
= ath9k_hw_common(ah
);
507 enum ath9k_int status
;
512 * The hardware is not ready/present, don't
513 * touch anything. Note this can happen early
514 * on if the IRQ is shared.
516 if (!ah
|| test_bit(ATH_OP_INVALID
, &common
->op_flags
))
519 /* shared irq, not for us */
520 if (!ath9k_hw_intrpend(ah
))
524 * Figure out the reason(s) for the interrupt. Note
525 * that the hal returns a pseudo-ISR that may include
526 * bits we haven't explicitly enabled so we mask the
527 * value to insure we only process bits we requested.
529 ath9k_hw_getisr(ah
, &status
, &sync_cause
); /* NB: clears ISR too */
530 ath9k_debug_sync_cause(sc
, sync_cause
);
531 status
&= ah
->imask
; /* discard unasked-for bits */
533 if (test_bit(ATH_OP_HW_RESET
, &common
->op_flags
))
537 * If there are no status bits set, then this interrupt was not
538 * for me (should have been caught above).
543 /* Cache the status */
544 sc
->intrstatus
= status
;
546 if (status
& SCHED_INTR
)
550 * If a FATAL interrupt is received, we have to reset the chip
553 if (status
& ATH9K_INT_FATAL
)
556 if ((ah
->config
.hw_hang_checks
& HW_BB_WATCHDOG
) &&
557 (status
& ATH9K_INT_BB_WATCHDOG
))
560 if (status
& ATH9K_INT_SWBA
)
561 tasklet_schedule(&sc
->bcon_tasklet
);
563 if (status
& ATH9K_INT_TXURN
)
564 ath9k_hw_updatetxtriglevel(ah
, true);
566 if (status
& ATH9K_INT_RXEOL
) {
567 ah
->imask
&= ~(ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
568 ath9k_hw_set_interrupts(ah
);
571 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
572 if (status
& ATH9K_INT_TIM_TIMER
) {
573 if (ATH_DBG_WARN_ON_ONCE(sc
->ps_idle
))
575 /* Clear RxAbort bit so that we can
577 ath9k_setpower(sc
, ATH9K_PM_AWAKE
);
578 spin_lock(&sc
->sc_pm_lock
);
579 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
580 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
;
581 spin_unlock(&sc
->sc_pm_lock
);
586 ath_debug_stat_interrupt(sc
, status
);
589 /* turn off every interrupt */
590 ath9k_hw_disable_interrupts(ah
);
591 tasklet_schedule(&sc
->intr_tq
);
600 * This function is called when a HW reset cannot be deferred
601 * and has to be immediate.
603 int ath_reset(struct ath_softc
*sc
, struct ath9k_channel
*hchan
)
605 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
608 ath9k_hw_kill_interrupts(sc
->sc_ah
);
609 set_bit(ATH_OP_HW_RESET
, &common
->op_flags
);
612 r
= ath_reset_internal(sc
, hchan
);
613 ath9k_ps_restore(sc
);
619 * When a HW reset can be deferred, it is added to the
620 * hw_reset_work workqueue, but we set ATH_OP_HW_RESET before
623 void ath9k_queue_reset(struct ath_softc
*sc
, enum ath_reset_type type
)
625 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
626 #ifdef CONFIG_ATH9K_DEBUGFS
627 RESET_STAT_INC(sc
, type
);
629 ath9k_hw_kill_interrupts(sc
->sc_ah
);
630 set_bit(ATH_OP_HW_RESET
, &common
->op_flags
);
631 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
634 void ath_reset_work(struct work_struct
*work
)
636 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, hw_reset_work
);
639 ath_reset_internal(sc
, NULL
);
640 ath9k_ps_restore(sc
);
643 /**********************/
644 /* mac80211 callbacks */
645 /**********************/
647 static int ath9k_start(struct ieee80211_hw
*hw
)
649 struct ath_softc
*sc
= hw
->priv
;
650 struct ath_hw
*ah
= sc
->sc_ah
;
651 struct ath_common
*common
= ath9k_hw_common(ah
);
652 struct ieee80211_channel
*curchan
= sc
->cur_chan
->chandef
.chan
;
653 struct ath_chanctx
*ctx
= sc
->cur_chan
;
654 struct ath9k_channel
*init_channel
;
657 ath_dbg(common
, CONFIG
,
658 "Starting driver with initial channel: %d MHz\n",
659 curchan
->center_freq
);
662 mutex_lock(&sc
->mutex
);
664 init_channel
= ath9k_cmn_get_channel(hw
, ah
, &ctx
->chandef
);
665 sc
->cur_chandef
= hw
->conf
.chandef
;
667 /* Reset SERDES registers */
668 ath9k_hw_configpcipowersave(ah
, false);
671 * The basic interface to setting the hardware in a good
672 * state is ``reset''. On return the hardware is known to
673 * be powered up and with interrupts disabled. This must
674 * be followed by initialization of the appropriate bits
675 * and then setup of the interrupt mask.
677 spin_lock_bh(&sc
->sc_pcu_lock
);
679 atomic_set(&ah
->intr_ref_cnt
, -1);
681 r
= ath9k_hw_reset(ah
, init_channel
, ah
->caldata
, false);
684 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
685 r
, curchan
->center_freq
);
686 ah
->reset_power_on
= false;
689 /* Setup our intr mask. */
690 ah
->imask
= ATH9K_INT_TX
| ATH9K_INT_RXEOL
|
691 ATH9K_INT_RXORN
| ATH9K_INT_FATAL
|
694 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
695 ah
->imask
|= ATH9K_INT_RXHP
|
698 ah
->imask
|= ATH9K_INT_RX
;
700 if (ah
->config
.hw_hang_checks
& HW_BB_WATCHDOG
)
701 ah
->imask
|= ATH9K_INT_BB_WATCHDOG
;
704 * Enable GTT interrupts only for AR9003/AR9004 chips
707 if (AR_SREV_9300_20_OR_LATER(ah
))
708 ah
->imask
|= ATH9K_INT_GTT
;
710 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
711 ah
->imask
|= ATH9K_INT_CST
;
715 clear_bit(ATH_OP_INVALID
, &common
->op_flags
);
716 sc
->sc_ah
->is_monitoring
= false;
718 if (!ath_complete_reset(sc
, false))
719 ah
->reset_power_on
= false;
721 if (ah
->led_pin
>= 0) {
722 ath9k_hw_cfg_output(ah
, ah
->led_pin
,
723 AR_GPIO_OUTPUT_MUX_AS_OUTPUT
);
724 ath9k_hw_set_gpio(ah
, ah
->led_pin
,
725 (ah
->config
.led_active_high
) ? 1 : 0);
729 * Reset key cache to sane defaults (all entries cleared) instead of
730 * semi-random values after suspend/resume.
732 ath9k_cmn_init_crypto(sc
->sc_ah
);
734 ath9k_hw_reset_tsf(ah
);
736 spin_unlock_bh(&sc
->sc_pcu_lock
);
738 mutex_unlock(&sc
->mutex
);
740 ath9k_ps_restore(sc
);
745 static void ath9k_tx(struct ieee80211_hw
*hw
,
746 struct ieee80211_tx_control
*control
,
749 struct ath_softc
*sc
= hw
->priv
;
750 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
751 struct ath_tx_control txctl
;
752 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
755 if (sc
->ps_enabled
) {
757 * mac80211 does not set PM field for normal data frames, so we
758 * need to update that based on the current PS mode.
760 if (ieee80211_is_data(hdr
->frame_control
) &&
761 !ieee80211_is_nullfunc(hdr
->frame_control
) &&
762 !ieee80211_has_pm(hdr
->frame_control
)) {
764 "Add PM=1 for a TX frame while in PS mode\n");
765 hdr
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
769 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_NETWORK_SLEEP
)) {
771 * We are using PS-Poll and mac80211 can request TX while in
772 * power save mode. Need to wake up hardware for the TX to be
773 * completed and if needed, also for RX of buffered frames.
776 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
777 if (!(sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
778 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
779 if (ieee80211_is_pspoll(hdr
->frame_control
)) {
781 "Sending PS-Poll to pick a buffered frame\n");
782 sc
->ps_flags
|= PS_WAIT_FOR_PSPOLL_DATA
;
784 ath_dbg(common
, PS
, "Wake up to complete TX\n");
785 sc
->ps_flags
|= PS_WAIT_FOR_TX_ACK
;
788 * The actual restore operation will happen only after
789 * the ps_flags bit is cleared. We are just dropping
790 * the ps_usecount here.
792 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
793 ath9k_ps_restore(sc
);
797 * Cannot tx while the hardware is in full sleep, it first needs a full
798 * chip reset to recover from that
800 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_FULL_SLEEP
)) {
801 ath_err(common
, "TX while HW is in FULL_SLEEP mode\n");
805 memset(&txctl
, 0, sizeof(struct ath_tx_control
));
806 txctl
.txq
= sc
->tx
.txq_map
[skb_get_queue_mapping(skb
)];
807 txctl
.sta
= control
->sta
;
809 ath_dbg(common
, XMIT
, "transmitting packet, skb: %p\n", skb
);
811 if (ath_tx_start(hw
, skb
, &txctl
) != 0) {
812 ath_dbg(common
, XMIT
, "TX failed\n");
813 TX_STAT_INC(txctl
.txq
->axq_qnum
, txfailed
);
819 ieee80211_free_txskb(hw
, skb
);
822 static void ath9k_stop(struct ieee80211_hw
*hw
)
824 struct ath_softc
*sc
= hw
->priv
;
825 struct ath_hw
*ah
= sc
->sc_ah
;
826 struct ath_common
*common
= ath9k_hw_common(ah
);
829 ath9k_deinit_channel_context(sc
);
831 mutex_lock(&sc
->mutex
);
835 if (test_bit(ATH_OP_INVALID
, &common
->op_flags
)) {
836 ath_dbg(common
, ANY
, "Device not present\n");
837 mutex_unlock(&sc
->mutex
);
841 /* Ensure HW is awake when we try to shut it down. */
844 spin_lock_bh(&sc
->sc_pcu_lock
);
846 /* prevent tasklets to enable interrupts once we disable them */
847 ah
->imask
&= ~ATH9K_INT_GLOBAL
;
849 /* make sure h/w will not generate any interrupt
850 * before setting the invalid flag. */
851 ath9k_hw_disable_interrupts(ah
);
853 spin_unlock_bh(&sc
->sc_pcu_lock
);
855 /* we can now sync irq and kill any running tasklets, since we already
856 * disabled interrupts and not holding a spin lock */
857 synchronize_irq(sc
->irq
);
858 tasklet_kill(&sc
->intr_tq
);
859 tasklet_kill(&sc
->bcon_tasklet
);
861 prev_idle
= sc
->ps_idle
;
864 spin_lock_bh(&sc
->sc_pcu_lock
);
866 if (ah
->led_pin
>= 0) {
867 ath9k_hw_set_gpio(ah
, ah
->led_pin
,
868 (ah
->config
.led_active_high
) ? 0 : 1);
869 ath9k_hw_cfg_gpio_input(ah
, ah
->led_pin
);
872 ath_prepare_reset(sc
);
875 dev_kfree_skb_any(sc
->rx
.frag
);
880 ah
->curchan
= ath9k_cmn_get_channel(hw
, ah
,
881 &sc
->cur_chan
->chandef
);
883 ath9k_hw_reset(ah
, ah
->curchan
, ah
->caldata
, false);
885 set_bit(ATH_OP_INVALID
, &common
->op_flags
);
887 ath9k_hw_phy_disable(ah
);
889 ath9k_hw_configpcipowersave(ah
, true);
891 spin_unlock_bh(&sc
->sc_pcu_lock
);
893 ath9k_ps_restore(sc
);
895 sc
->ps_idle
= prev_idle
;
897 mutex_unlock(&sc
->mutex
);
899 ath_dbg(common
, CONFIG
, "Driver halt\n");
902 static bool ath9k_uses_beacons(int type
)
905 case NL80211_IFTYPE_AP
:
906 case NL80211_IFTYPE_ADHOC
:
907 case NL80211_IFTYPE_MESH_POINT
:
914 static void ath9k_vif_iter(struct ath9k_vif_iter_data
*iter_data
,
915 u8
*mac
, struct ieee80211_vif
*vif
)
917 struct ath_vif
*avp
= (struct ath_vif
*)vif
->drv_priv
;
920 if (iter_data
->has_hw_macaddr
) {
921 for (i
= 0; i
< ETH_ALEN
; i
++)
922 iter_data
->mask
[i
] &=
923 ~(iter_data
->hw_macaddr
[i
] ^ mac
[i
]);
925 memcpy(iter_data
->hw_macaddr
, mac
, ETH_ALEN
);
926 iter_data
->has_hw_macaddr
= true;
929 if (!vif
->bss_conf
.use_short_slot
)
930 iter_data
->slottime
= ATH9K_SLOT_TIME_20
;
933 case NL80211_IFTYPE_AP
:
936 case NL80211_IFTYPE_STATION
:
937 iter_data
->nstations
++;
938 if (avp
->assoc
&& !iter_data
->primary_sta
)
939 iter_data
->primary_sta
= vif
;
941 case NL80211_IFTYPE_ADHOC
:
942 iter_data
->nadhocs
++;
943 if (vif
->bss_conf
.enable_beacon
)
944 iter_data
->beacons
= true;
946 case NL80211_IFTYPE_MESH_POINT
:
947 iter_data
->nmeshes
++;
948 if (vif
->bss_conf
.enable_beacon
)
949 iter_data
->beacons
= true;
951 case NL80211_IFTYPE_WDS
:
959 static void ath9k_update_bssid_mask(struct ath_softc
*sc
,
960 struct ath_chanctx
*ctx
,
961 struct ath9k_vif_iter_data
*iter_data
)
963 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
967 if (!ath9k_is_chanctx_enabled())
970 list_for_each_entry(avp
, &ctx
->vifs
, list
) {
971 if (ctx
->nvifs_assigned
!= 1)
974 if (!avp
->vif
->p2p
|| !iter_data
->has_hw_macaddr
)
977 ether_addr_copy(common
->curbssid
, avp
->bssid
);
979 /* perm_addr will be used as the p2p device address. */
980 for (i
= 0; i
< ETH_ALEN
; i
++)
981 iter_data
->mask
[i
] &=
982 ~(iter_data
->hw_macaddr
[i
] ^
983 sc
->hw
->wiphy
->perm_addr
[i
]);
987 /* Called with sc->mutex held. */
988 void ath9k_calculate_iter_data(struct ath_softc
*sc
,
989 struct ath_chanctx
*ctx
,
990 struct ath9k_vif_iter_data
*iter_data
)
995 * The hardware will use primary station addr together with the
996 * BSSID mask when matching addresses.
998 memset(iter_data
, 0, sizeof(*iter_data
));
999 eth_broadcast_addr(iter_data
->mask
);
1000 iter_data
->slottime
= ATH9K_SLOT_TIME_9
;
1002 list_for_each_entry(avp
, &ctx
->vifs
, list
)
1003 ath9k_vif_iter(iter_data
, avp
->vif
->addr
, avp
->vif
);
1005 ath9k_update_bssid_mask(sc
, ctx
, iter_data
);
1008 static void ath9k_set_assoc_state(struct ath_softc
*sc
,
1009 struct ieee80211_vif
*vif
, bool changed
)
1011 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1012 struct ath_vif
*avp
= (struct ath_vif
*)vif
->drv_priv
;
1013 unsigned long flags
;
1015 set_bit(ATH_OP_PRIM_STA_VIF
, &common
->op_flags
);
1017 ether_addr_copy(common
->curbssid
, avp
->bssid
);
1018 common
->curaid
= avp
->aid
;
1019 ath9k_hw_write_associd(sc
->sc_ah
);
1022 common
->last_rssi
= ATH_RSSI_DUMMY_MARKER
;
1023 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
1025 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
1026 sc
->ps_flags
|= PS_BEACON_SYNC
| PS_WAIT_FOR_BEACON
;
1027 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
1030 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
))
1031 ath9k_mci_update_wlan_channels(sc
, false);
1033 ath_dbg(common
, CONFIG
,
1034 "Primary Station interface: %pM, BSSID: %pM\n",
1035 vif
->addr
, common
->curbssid
);
1038 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
1039 static void ath9k_set_offchannel_state(struct ath_softc
*sc
)
1041 struct ath_hw
*ah
= sc
->sc_ah
;
1042 struct ath_common
*common
= ath9k_hw_common(ah
);
1043 struct ieee80211_vif
*vif
= NULL
;
1045 ath9k_ps_wakeup(sc
);
1047 if (sc
->offchannel
.state
< ATH_OFFCHANNEL_ROC_START
)
1048 vif
= sc
->offchannel
.scan_vif
;
1050 vif
= sc
->offchannel
.roc_vif
;
1055 eth_zero_addr(common
->curbssid
);
1056 eth_broadcast_addr(common
->bssidmask
);
1057 memcpy(common
->macaddr
, vif
->addr
, ETH_ALEN
);
1059 ah
->opmode
= vif
->type
;
1060 ah
->imask
&= ~ATH9K_INT_SWBA
;
1061 ah
->imask
&= ~ATH9K_INT_TSFOOR
;
1062 ah
->slottime
= ATH9K_SLOT_TIME_9
;
1064 ath_hw_setbssidmask(common
);
1065 ath9k_hw_setopmode(ah
);
1066 ath9k_hw_write_associd(sc
->sc_ah
);
1067 ath9k_hw_set_interrupts(ah
);
1068 ath9k_hw_init_global_settings(ah
);
1071 ath9k_ps_restore(sc
);
1075 /* Called with sc->mutex held. */
1076 void ath9k_calculate_summary_state(struct ath_softc
*sc
,
1077 struct ath_chanctx
*ctx
)
1079 struct ath_hw
*ah
= sc
->sc_ah
;
1080 struct ath_common
*common
= ath9k_hw_common(ah
);
1081 struct ath9k_vif_iter_data iter_data
;
1082 struct ath_beacon_config
*cur_conf
;
1084 ath_chanctx_check_active(sc
, ctx
);
1086 if (ctx
!= sc
->cur_chan
)
1089 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
1090 if (ctx
== &sc
->offchannel
.chan
)
1091 return ath9k_set_offchannel_state(sc
);
1094 ath9k_ps_wakeup(sc
);
1095 ath9k_calculate_iter_data(sc
, ctx
, &iter_data
);
1097 if (iter_data
.has_hw_macaddr
)
1098 memcpy(common
->macaddr
, iter_data
.hw_macaddr
, ETH_ALEN
);
1100 memcpy(common
->bssidmask
, iter_data
.mask
, ETH_ALEN
);
1101 ath_hw_setbssidmask(common
);
1103 if (iter_data
.naps
> 0) {
1104 cur_conf
= &ctx
->beacon
;
1105 ath9k_hw_set_tsfadjust(ah
, true);
1106 ah
->opmode
= NL80211_IFTYPE_AP
;
1107 if (cur_conf
->enable_beacon
)
1108 iter_data
.beacons
= true;
1110 ath9k_hw_set_tsfadjust(ah
, false);
1112 if (iter_data
.nmeshes
)
1113 ah
->opmode
= NL80211_IFTYPE_MESH_POINT
;
1114 else if (iter_data
.nwds
)
1115 ah
->opmode
= NL80211_IFTYPE_AP
;
1116 else if (iter_data
.nadhocs
)
1117 ah
->opmode
= NL80211_IFTYPE_ADHOC
;
1119 ah
->opmode
= NL80211_IFTYPE_STATION
;
1122 ath9k_hw_setopmode(ah
);
1124 ctx
->switch_after_beacon
= false;
1125 if ((iter_data
.nstations
+ iter_data
.nadhocs
+ iter_data
.nmeshes
) > 0)
1126 ah
->imask
|= ATH9K_INT_TSFOOR
;
1128 ah
->imask
&= ~ATH9K_INT_TSFOOR
;
1129 if (iter_data
.naps
== 1 && iter_data
.beacons
)
1130 ctx
->switch_after_beacon
= true;
1133 ah
->imask
&= ~ATH9K_INT_SWBA
;
1134 if (ah
->opmode
== NL80211_IFTYPE_STATION
) {
1135 bool changed
= (iter_data
.primary_sta
!= ctx
->primary_sta
);
1137 if (iter_data
.primary_sta
) {
1138 iter_data
.beacons
= true;
1139 ath9k_set_assoc_state(sc
, iter_data
.primary_sta
,
1141 ctx
->primary_sta
= iter_data
.primary_sta
;
1143 ctx
->primary_sta
= NULL
;
1144 eth_zero_addr(common
->curbssid
);
1146 ath9k_hw_write_associd(sc
->sc_ah
);
1147 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
))
1148 ath9k_mci_update_wlan_channels(sc
, true);
1150 } else if (iter_data
.beacons
) {
1151 ah
->imask
|= ATH9K_INT_SWBA
;
1153 ath9k_hw_set_interrupts(ah
);
1155 if (iter_data
.beacons
)
1156 set_bit(ATH_OP_BEACONS
, &common
->op_flags
);
1158 clear_bit(ATH_OP_BEACONS
, &common
->op_flags
);
1160 if (ah
->slottime
!= iter_data
.slottime
) {
1161 ah
->slottime
= iter_data
.slottime
;
1162 ath9k_hw_init_global_settings(ah
);
1165 if (iter_data
.primary_sta
)
1166 set_bit(ATH_OP_PRIM_STA_VIF
, &common
->op_flags
);
1168 clear_bit(ATH_OP_PRIM_STA_VIF
, &common
->op_flags
);
1170 ath_dbg(common
, CONFIG
,
1171 "macaddr: %pM, bssid: %pM, bssidmask: %pM\n",
1172 common
->macaddr
, common
->curbssid
, common
->bssidmask
);
1174 ath9k_ps_restore(sc
);
1177 static void ath9k_tpc_vif_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
1179 int *power
= (int *)data
;
1181 if (*power
< vif
->bss_conf
.txpower
)
1182 *power
= vif
->bss_conf
.txpower
;
1185 /* Called with sc->mutex held. */
1186 void ath9k_set_txpower(struct ath_softc
*sc
, struct ieee80211_vif
*vif
)
1189 struct ath_hw
*ah
= sc
->sc_ah
;
1190 struct ath_regulatory
*reg
= ath9k_hw_regulatory(ah
);
1192 ath9k_ps_wakeup(sc
);
1193 if (ah
->tpc_enabled
) {
1194 power
= (vif
) ? vif
->bss_conf
.txpower
: -1;
1195 ieee80211_iterate_active_interfaces_atomic(
1196 sc
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
1197 ath9k_tpc_vif_iter
, &power
);
1199 power
= sc
->hw
->conf
.power_level
;
1201 power
= sc
->hw
->conf
.power_level
;
1203 sc
->cur_chan
->txpower
= 2 * power
;
1204 ath9k_hw_set_txpowerlimit(ah
, sc
->cur_chan
->txpower
, false);
1205 sc
->cur_chan
->cur_txpower
= reg
->max_power_level
;
1206 ath9k_ps_restore(sc
);
1209 static void ath9k_assign_hw_queues(struct ieee80211_hw
*hw
,
1210 struct ieee80211_vif
*vif
)
1214 if (!ath9k_is_chanctx_enabled())
1217 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++)
1218 vif
->hw_queue
[i
] = i
;
1220 if (vif
->type
== NL80211_IFTYPE_AP
||
1221 vif
->type
== NL80211_IFTYPE_MESH_POINT
)
1222 vif
->cab_queue
= hw
->queues
- 2;
1224 vif
->cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
1227 static int ath9k_add_interface(struct ieee80211_hw
*hw
,
1228 struct ieee80211_vif
*vif
)
1230 struct ath_softc
*sc
= hw
->priv
;
1231 struct ath_hw
*ah
= sc
->sc_ah
;
1232 struct ath_common
*common
= ath9k_hw_common(ah
);
1233 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1234 struct ath_node
*an
= &avp
->mcast_node
;
1236 mutex_lock(&sc
->mutex
);
1238 if (config_enabled(CONFIG_ATH9K_TX99
)) {
1239 if (sc
->cur_chan
->nvifs
>= 1) {
1240 mutex_unlock(&sc
->mutex
);
1246 ath_dbg(common
, CONFIG
, "Attach a VIF of type: %d\n", vif
->type
);
1247 sc
->cur_chan
->nvifs
++;
1249 if (ath9k_uses_beacons(vif
->type
))
1250 ath9k_beacon_assign_slot(sc
, vif
);
1253 if (!ath9k_is_chanctx_enabled()) {
1254 avp
->chanctx
= sc
->cur_chan
;
1255 list_add_tail(&avp
->list
, &avp
->chanctx
->vifs
);
1258 ath9k_calculate_summary_state(sc
, avp
->chanctx
);
1260 ath9k_assign_hw_queues(hw
, vif
);
1262 ath9k_set_txpower(sc
, vif
);
1267 an
->no_ps_filter
= true;
1268 ath_tx_node_init(sc
, an
);
1270 mutex_unlock(&sc
->mutex
);
1274 static int ath9k_change_interface(struct ieee80211_hw
*hw
,
1275 struct ieee80211_vif
*vif
,
1276 enum nl80211_iftype new_type
,
1279 struct ath_softc
*sc
= hw
->priv
;
1280 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1281 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1283 mutex_lock(&sc
->mutex
);
1285 if (config_enabled(CONFIG_ATH9K_TX99
)) {
1286 mutex_unlock(&sc
->mutex
);
1290 ath_dbg(common
, CONFIG
, "Change Interface\n");
1292 if (ath9k_uses_beacons(vif
->type
))
1293 ath9k_beacon_remove_slot(sc
, vif
);
1295 vif
->type
= new_type
;
1298 if (ath9k_uses_beacons(vif
->type
))
1299 ath9k_beacon_assign_slot(sc
, vif
);
1301 ath9k_assign_hw_queues(hw
, vif
);
1302 ath9k_calculate_summary_state(sc
, avp
->chanctx
);
1304 ath9k_set_txpower(sc
, vif
);
1306 mutex_unlock(&sc
->mutex
);
1310 static void ath9k_remove_interface(struct ieee80211_hw
*hw
,
1311 struct ieee80211_vif
*vif
)
1313 struct ath_softc
*sc
= hw
->priv
;
1314 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1315 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1317 ath_dbg(common
, CONFIG
, "Detach Interface\n");
1319 mutex_lock(&sc
->mutex
);
1321 ath9k_p2p_remove_vif(sc
, vif
);
1323 sc
->cur_chan
->nvifs
--;
1324 sc
->tx99_vif
= NULL
;
1325 if (!ath9k_is_chanctx_enabled())
1326 list_del(&avp
->list
);
1328 if (ath9k_uses_beacons(vif
->type
))
1329 ath9k_beacon_remove_slot(sc
, vif
);
1331 ath_tx_node_cleanup(sc
, &avp
->mcast_node
);
1333 ath9k_calculate_summary_state(sc
, avp
->chanctx
);
1335 ath9k_set_txpower(sc
, NULL
);
1337 mutex_unlock(&sc
->mutex
);
1340 static void ath9k_enable_ps(struct ath_softc
*sc
)
1342 struct ath_hw
*ah
= sc
->sc_ah
;
1343 struct ath_common
*common
= ath9k_hw_common(ah
);
1345 if (config_enabled(CONFIG_ATH9K_TX99
))
1348 sc
->ps_enabled
= true;
1349 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1350 if ((ah
->imask
& ATH9K_INT_TIM_TIMER
) == 0) {
1351 ah
->imask
|= ATH9K_INT_TIM_TIMER
;
1352 ath9k_hw_set_interrupts(ah
);
1354 ath9k_hw_setrxabort(ah
, 1);
1356 ath_dbg(common
, PS
, "PowerSave enabled\n");
1359 static void ath9k_disable_ps(struct ath_softc
*sc
)
1361 struct ath_hw
*ah
= sc
->sc_ah
;
1362 struct ath_common
*common
= ath9k_hw_common(ah
);
1364 if (config_enabled(CONFIG_ATH9K_TX99
))
1367 sc
->ps_enabled
= false;
1368 ath9k_hw_setpower(ah
, ATH9K_PM_AWAKE
);
1369 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1370 ath9k_hw_setrxabort(ah
, 0);
1371 sc
->ps_flags
&= ~(PS_WAIT_FOR_BEACON
|
1373 PS_WAIT_FOR_PSPOLL_DATA
|
1374 PS_WAIT_FOR_TX_ACK
);
1375 if (ah
->imask
& ATH9K_INT_TIM_TIMER
) {
1376 ah
->imask
&= ~ATH9K_INT_TIM_TIMER
;
1377 ath9k_hw_set_interrupts(ah
);
1380 ath_dbg(common
, PS
, "PowerSave disabled\n");
1383 static int ath9k_config(struct ieee80211_hw
*hw
, u32 changed
)
1385 struct ath_softc
*sc
= hw
->priv
;
1386 struct ath_hw
*ah
= sc
->sc_ah
;
1387 struct ath_common
*common
= ath9k_hw_common(ah
);
1388 struct ieee80211_conf
*conf
= &hw
->conf
;
1389 struct ath_chanctx
*ctx
= sc
->cur_chan
;
1391 ath9k_ps_wakeup(sc
);
1392 mutex_lock(&sc
->mutex
);
1394 if (changed
& IEEE80211_CONF_CHANGE_IDLE
) {
1395 sc
->ps_idle
= !!(conf
->flags
& IEEE80211_CONF_IDLE
);
1397 ath_cancel_work(sc
);
1398 ath9k_stop_btcoex(sc
);
1400 ath9k_start_btcoex(sc
);
1402 * The chip needs a reset to properly wake up from
1405 ath_chanctx_set_channel(sc
, ctx
, &ctx
->chandef
);
1410 * We just prepare to enable PS. We have to wait until our AP has
1411 * ACK'd our null data frame to disable RX otherwise we'll ignore
1412 * those ACKs and end up retransmitting the same null data frames.
1413 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1415 if (changed
& IEEE80211_CONF_CHANGE_PS
) {
1416 unsigned long flags
;
1417 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
1418 if (conf
->flags
& IEEE80211_CONF_PS
)
1419 ath9k_enable_ps(sc
);
1421 ath9k_disable_ps(sc
);
1422 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
1425 if (changed
& IEEE80211_CONF_CHANGE_MONITOR
) {
1426 if (conf
->flags
& IEEE80211_CONF_MONITOR
) {
1427 ath_dbg(common
, CONFIG
, "Monitor mode is enabled\n");
1428 sc
->sc_ah
->is_monitoring
= true;
1430 ath_dbg(common
, CONFIG
, "Monitor mode is disabled\n");
1431 sc
->sc_ah
->is_monitoring
= false;
1435 if (!ath9k_is_chanctx_enabled() && (changed
& IEEE80211_CONF_CHANGE_CHANNEL
)) {
1436 ctx
->offchannel
= !!(conf
->flags
& IEEE80211_CONF_OFFCHANNEL
);
1437 ath_chanctx_set_channel(sc
, ctx
, &hw
->conf
.chandef
);
1440 mutex_unlock(&sc
->mutex
);
1441 ath9k_ps_restore(sc
);
1446 #define SUPPORTED_FILTERS \
1451 FIF_BCN_PRBRESP_PROMISC | \
1455 /* FIXME: sc->sc_full_reset ? */
1456 static void ath9k_configure_filter(struct ieee80211_hw
*hw
,
1457 unsigned int changed_flags
,
1458 unsigned int *total_flags
,
1461 struct ath_softc
*sc
= hw
->priv
;
1462 struct ath_chanctx
*ctx
;
1465 changed_flags
&= SUPPORTED_FILTERS
;
1466 *total_flags
&= SUPPORTED_FILTERS
;
1468 spin_lock_bh(&sc
->chan_lock
);
1469 ath_for_each_chanctx(sc
, ctx
)
1470 ctx
->rxfilter
= *total_flags
;
1471 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
1472 sc
->offchannel
.chan
.rxfilter
= *total_flags
;
1474 spin_unlock_bh(&sc
->chan_lock
);
1476 ath9k_ps_wakeup(sc
);
1477 rfilt
= ath_calcrxfilter(sc
);
1478 ath9k_hw_setrxfilter(sc
->sc_ah
, rfilt
);
1479 ath9k_ps_restore(sc
);
1481 ath_dbg(ath9k_hw_common(sc
->sc_ah
), CONFIG
, "Set HW RX filter: 0x%x\n",
1485 static int ath9k_sta_add(struct ieee80211_hw
*hw
,
1486 struct ieee80211_vif
*vif
,
1487 struct ieee80211_sta
*sta
)
1489 struct ath_softc
*sc
= hw
->priv
;
1490 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1491 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1492 struct ieee80211_key_conf ps_key
= { };
1495 ath_node_attach(sc
, sta
, vif
);
1497 if (vif
->type
!= NL80211_IFTYPE_AP
&&
1498 vif
->type
!= NL80211_IFTYPE_AP_VLAN
)
1501 key
= ath_key_config(common
, vif
, sta
, &ps_key
);
1504 an
->key_idx
[0] = key
;
1510 static void ath9k_del_ps_key(struct ath_softc
*sc
,
1511 struct ieee80211_vif
*vif
,
1512 struct ieee80211_sta
*sta
)
1514 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1515 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1516 struct ieee80211_key_conf ps_key
= { .hw_key_idx
= an
->ps_key
};
1521 ath_key_delete(common
, &ps_key
);
1526 static int ath9k_sta_remove(struct ieee80211_hw
*hw
,
1527 struct ieee80211_vif
*vif
,
1528 struct ieee80211_sta
*sta
)
1530 struct ath_softc
*sc
= hw
->priv
;
1532 ath9k_del_ps_key(sc
, vif
, sta
);
1533 ath_node_detach(sc
, sta
);
1538 static int ath9k_sta_state(struct ieee80211_hw
*hw
,
1539 struct ieee80211_vif
*vif
,
1540 struct ieee80211_sta
*sta
,
1541 enum ieee80211_sta_state old_state
,
1542 enum ieee80211_sta_state new_state
)
1544 struct ath_softc
*sc
= hw
->priv
;
1545 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1548 if (old_state
== IEEE80211_STA_AUTH
&&
1549 new_state
== IEEE80211_STA_ASSOC
) {
1550 ret
= ath9k_sta_add(hw
, vif
, sta
);
1551 ath_dbg(common
, CONFIG
,
1552 "Add station: %pM\n", sta
->addr
);
1553 } else if (old_state
== IEEE80211_STA_ASSOC
&&
1554 new_state
== IEEE80211_STA_AUTH
) {
1555 ret
= ath9k_sta_remove(hw
, vif
, sta
);
1556 ath_dbg(common
, CONFIG
,
1557 "Remove station: %pM\n", sta
->addr
);
1560 if (ath9k_is_chanctx_enabled()) {
1561 if (vif
->type
== NL80211_IFTYPE_STATION
) {
1562 if (old_state
== IEEE80211_STA_ASSOC
&&
1563 new_state
== IEEE80211_STA_AUTHORIZED
)
1564 ath_chanctx_event(sc
, vif
,
1565 ATH_CHANCTX_EVENT_AUTHORIZED
);
1572 static void ath9k_sta_set_tx_filter(struct ath_hw
*ah
,
1573 struct ath_node
*an
,
1578 for (i
= 0; i
< ARRAY_SIZE(an
->key_idx
); i
++) {
1579 if (!an
->key_idx
[i
])
1581 ath9k_hw_set_tx_filter(ah
, an
->key_idx
[i
], set
);
1585 static void ath9k_sta_notify(struct ieee80211_hw
*hw
,
1586 struct ieee80211_vif
*vif
,
1587 enum sta_notify_cmd cmd
,
1588 struct ieee80211_sta
*sta
)
1590 struct ath_softc
*sc
= hw
->priv
;
1591 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1594 case STA_NOTIFY_SLEEP
:
1595 an
->sleeping
= true;
1596 ath_tx_aggr_sleep(sta
, sc
, an
);
1597 ath9k_sta_set_tx_filter(sc
->sc_ah
, an
, true);
1599 case STA_NOTIFY_AWAKE
:
1600 ath9k_sta_set_tx_filter(sc
->sc_ah
, an
, false);
1601 an
->sleeping
= false;
1602 ath_tx_aggr_wakeup(sc
, an
);
1607 static int ath9k_conf_tx(struct ieee80211_hw
*hw
,
1608 struct ieee80211_vif
*vif
, u16 queue
,
1609 const struct ieee80211_tx_queue_params
*params
)
1611 struct ath_softc
*sc
= hw
->priv
;
1612 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1613 struct ath_txq
*txq
;
1614 struct ath9k_tx_queue_info qi
;
1617 if (queue
>= IEEE80211_NUM_ACS
)
1620 txq
= sc
->tx
.txq_map
[queue
];
1622 ath9k_ps_wakeup(sc
);
1623 mutex_lock(&sc
->mutex
);
1625 memset(&qi
, 0, sizeof(struct ath9k_tx_queue_info
));
1627 qi
.tqi_aifs
= params
->aifs
;
1628 qi
.tqi_cwmin
= params
->cw_min
;
1629 qi
.tqi_cwmax
= params
->cw_max
;
1630 qi
.tqi_burstTime
= params
->txop
* 32;
1632 ath_dbg(common
, CONFIG
,
1633 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1634 queue
, txq
->axq_qnum
, params
->aifs
, params
->cw_min
,
1635 params
->cw_max
, params
->txop
);
1637 ath_update_max_aggr_framelen(sc
, queue
, qi
.tqi_burstTime
);
1638 ret
= ath_txq_update(sc
, txq
->axq_qnum
, &qi
);
1640 ath_err(common
, "TXQ Update failed\n");
1642 mutex_unlock(&sc
->mutex
);
1643 ath9k_ps_restore(sc
);
1648 static int ath9k_set_key(struct ieee80211_hw
*hw
,
1649 enum set_key_cmd cmd
,
1650 struct ieee80211_vif
*vif
,
1651 struct ieee80211_sta
*sta
,
1652 struct ieee80211_key_conf
*key
)
1654 struct ath_softc
*sc
= hw
->priv
;
1655 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1656 struct ath_node
*an
= NULL
;
1659 if (ath9k_modparam_nohwcrypt
)
1662 if ((vif
->type
== NL80211_IFTYPE_ADHOC
||
1663 vif
->type
== NL80211_IFTYPE_MESH_POINT
) &&
1664 (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
||
1665 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
) &&
1666 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
1668 * For now, disable hw crypto for the RSN IBSS group keys. This
1669 * could be optimized in the future to use a modified key cache
1670 * design to support per-STA RX GTK, but until that gets
1671 * implemented, use of software crypto for group addressed
1672 * frames is a acceptable to allow RSN IBSS to be used.
1677 mutex_lock(&sc
->mutex
);
1678 ath9k_ps_wakeup(sc
);
1679 ath_dbg(common
, CONFIG
, "Set HW Key %d\n", cmd
);
1681 an
= (struct ath_node
*)sta
->drv_priv
;
1686 ath9k_del_ps_key(sc
, vif
, sta
);
1688 key
->hw_key_idx
= 0;
1689 ret
= ath_key_config(common
, vif
, sta
, key
);
1691 key
->hw_key_idx
= ret
;
1692 /* push IV and Michael MIC generation to stack */
1693 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
1694 if (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
)
1695 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
1696 if (sc
->sc_ah
->sw_mgmt_crypto_tx
&&
1697 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
)
1698 key
->flags
|= IEEE80211_KEY_FLAG_SW_MGMT_TX
;
1701 if (an
&& key
->hw_key_idx
) {
1702 for (i
= 0; i
< ARRAY_SIZE(an
->key_idx
); i
++) {
1705 an
->key_idx
[i
] = key
->hw_key_idx
;
1708 WARN_ON(i
== ARRAY_SIZE(an
->key_idx
));
1712 ath_key_delete(common
, key
);
1714 for (i
= 0; i
< ARRAY_SIZE(an
->key_idx
); i
++) {
1715 if (an
->key_idx
[i
] != key
->hw_key_idx
)
1721 key
->hw_key_idx
= 0;
1727 ath9k_ps_restore(sc
);
1728 mutex_unlock(&sc
->mutex
);
1733 static void ath9k_bss_info_changed(struct ieee80211_hw
*hw
,
1734 struct ieee80211_vif
*vif
,
1735 struct ieee80211_bss_conf
*bss_conf
,
1739 (BSS_CHANGED_ASSOC | \
1740 BSS_CHANGED_IBSS | \
1741 BSS_CHANGED_BEACON_ENABLED)
1743 struct ath_softc
*sc
= hw
->priv
;
1744 struct ath_hw
*ah
= sc
->sc_ah
;
1745 struct ath_common
*common
= ath9k_hw_common(ah
);
1746 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1749 ath9k_ps_wakeup(sc
);
1750 mutex_lock(&sc
->mutex
);
1752 if (changed
& BSS_CHANGED_ASSOC
) {
1753 ath_dbg(common
, CONFIG
, "BSSID %pM Changed ASSOC %d\n",
1754 bss_conf
->bssid
, bss_conf
->assoc
);
1756 memcpy(avp
->bssid
, bss_conf
->bssid
, ETH_ALEN
);
1757 avp
->aid
= bss_conf
->aid
;
1758 avp
->assoc
= bss_conf
->assoc
;
1760 ath9k_calculate_summary_state(sc
, avp
->chanctx
);
1763 if (changed
& BSS_CHANGED_IBSS
) {
1764 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
1765 common
->curaid
= bss_conf
->aid
;
1766 ath9k_hw_write_associd(sc
->sc_ah
);
1769 if ((changed
& BSS_CHANGED_BEACON_ENABLED
) ||
1770 (changed
& BSS_CHANGED_BEACON_INT
) ||
1771 (changed
& BSS_CHANGED_BEACON_INFO
)) {
1772 ath9k_beacon_config(sc
, vif
, changed
);
1773 if (changed
& BSS_CHANGED_BEACON_ENABLED
)
1774 ath9k_calculate_summary_state(sc
, avp
->chanctx
);
1777 if ((avp
->chanctx
== sc
->cur_chan
) &&
1778 (changed
& BSS_CHANGED_ERP_SLOT
)) {
1779 if (bss_conf
->use_short_slot
)
1783 if (vif
->type
== NL80211_IFTYPE_AP
) {
1785 * Defer update, so that connected stations can adjust
1786 * their settings at the same time.
1787 * See beacon.c for more details
1789 sc
->beacon
.slottime
= slottime
;
1790 sc
->beacon
.updateslot
= UPDATE
;
1792 ah
->slottime
= slottime
;
1793 ath9k_hw_init_global_settings(ah
);
1797 if (changed
& BSS_CHANGED_P2P_PS
)
1798 ath9k_p2p_bss_info_changed(sc
, vif
);
1800 if (changed
& CHECK_ANI
)
1803 if (changed
& BSS_CHANGED_TXPOWER
) {
1804 ath_dbg(common
, CONFIG
, "vif %pM power %d dbm power_type %d\n",
1805 vif
->addr
, bss_conf
->txpower
, bss_conf
->txpower_type
);
1806 ath9k_set_txpower(sc
, vif
);
1809 mutex_unlock(&sc
->mutex
);
1810 ath9k_ps_restore(sc
);
1815 static u64
ath9k_get_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
1817 struct ath_softc
*sc
= hw
->priv
;
1820 mutex_lock(&sc
->mutex
);
1821 ath9k_ps_wakeup(sc
);
1822 tsf
= ath9k_hw_gettsf64(sc
->sc_ah
);
1823 ath9k_ps_restore(sc
);
1824 mutex_unlock(&sc
->mutex
);
1829 static void ath9k_set_tsf(struct ieee80211_hw
*hw
,
1830 struct ieee80211_vif
*vif
,
1833 struct ath_softc
*sc
= hw
->priv
;
1835 mutex_lock(&sc
->mutex
);
1836 ath9k_ps_wakeup(sc
);
1837 ath9k_hw_settsf64(sc
->sc_ah
, tsf
);
1838 ath9k_ps_restore(sc
);
1839 mutex_unlock(&sc
->mutex
);
1842 static void ath9k_reset_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
1844 struct ath_softc
*sc
= hw
->priv
;
1846 mutex_lock(&sc
->mutex
);
1848 ath9k_ps_wakeup(sc
);
1849 ath9k_hw_reset_tsf(sc
->sc_ah
);
1850 ath9k_ps_restore(sc
);
1852 mutex_unlock(&sc
->mutex
);
1855 static int ath9k_ampdu_action(struct ieee80211_hw
*hw
,
1856 struct ieee80211_vif
*vif
,
1857 enum ieee80211_ampdu_mlme_action action
,
1858 struct ieee80211_sta
*sta
,
1859 u16 tid
, u16
*ssn
, u8 buf_size
, bool amsdu
)
1861 struct ath_softc
*sc
= hw
->priv
;
1862 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1866 mutex_lock(&sc
->mutex
);
1869 case IEEE80211_AMPDU_RX_START
:
1871 case IEEE80211_AMPDU_RX_STOP
:
1873 case IEEE80211_AMPDU_TX_START
:
1874 if (ath9k_is_chanctx_enabled()) {
1875 if (test_bit(ATH_OP_SCANNING
, &common
->op_flags
)) {
1880 ath9k_ps_wakeup(sc
);
1881 ret
= ath_tx_aggr_start(sc
, sta
, tid
, ssn
);
1883 ieee80211_start_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1884 ath9k_ps_restore(sc
);
1886 case IEEE80211_AMPDU_TX_STOP_FLUSH
:
1887 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT
:
1889 case IEEE80211_AMPDU_TX_STOP_CONT
:
1890 ath9k_ps_wakeup(sc
);
1891 ath_tx_aggr_stop(sc
, sta
, tid
);
1893 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1894 ath9k_ps_restore(sc
);
1896 case IEEE80211_AMPDU_TX_OPERATIONAL
:
1897 ath9k_ps_wakeup(sc
);
1898 ath_tx_aggr_resume(sc
, sta
, tid
);
1899 ath9k_ps_restore(sc
);
1902 ath_err(ath9k_hw_common(sc
->sc_ah
), "Unknown AMPDU action\n");
1905 mutex_unlock(&sc
->mutex
);
1910 static int ath9k_get_survey(struct ieee80211_hw
*hw
, int idx
,
1911 struct survey_info
*survey
)
1913 struct ath_softc
*sc
= hw
->priv
;
1914 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1915 struct ieee80211_supported_band
*sband
;
1916 struct ieee80211_channel
*chan
;
1919 if (config_enabled(CONFIG_ATH9K_TX99
))
1922 spin_lock_bh(&common
->cc_lock
);
1924 ath_update_survey_stats(sc
);
1926 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
];
1927 if (sband
&& idx
>= sband
->n_channels
) {
1928 idx
-= sband
->n_channels
;
1933 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
];
1935 if (!sband
|| idx
>= sband
->n_channels
) {
1936 spin_unlock_bh(&common
->cc_lock
);
1940 chan
= &sband
->channels
[idx
];
1941 pos
= chan
->hw_value
;
1942 memcpy(survey
, &sc
->survey
[pos
], sizeof(*survey
));
1943 survey
->channel
= chan
;
1944 spin_unlock_bh(&common
->cc_lock
);
1949 static void ath9k_enable_dynack(struct ath_softc
*sc
)
1951 #ifdef CONFIG_ATH9K_DYNACK
1953 struct ath_hw
*ah
= sc
->sc_ah
;
1955 ath_dynack_reset(ah
);
1957 ah
->dynack
.enabled
= true;
1958 rfilt
= ath_calcrxfilter(sc
);
1959 ath9k_hw_setrxfilter(ah
, rfilt
);
1963 static void ath9k_set_coverage_class(struct ieee80211_hw
*hw
,
1966 struct ath_softc
*sc
= hw
->priv
;
1967 struct ath_hw
*ah
= sc
->sc_ah
;
1969 if (config_enabled(CONFIG_ATH9K_TX99
))
1972 mutex_lock(&sc
->mutex
);
1974 if (coverage_class
>= 0) {
1975 ah
->coverage_class
= coverage_class
;
1976 if (ah
->dynack
.enabled
) {
1979 ah
->dynack
.enabled
= false;
1980 rfilt
= ath_calcrxfilter(sc
);
1981 ath9k_hw_setrxfilter(ah
, rfilt
);
1983 ath9k_ps_wakeup(sc
);
1984 ath9k_hw_init_global_settings(ah
);
1985 ath9k_ps_restore(sc
);
1986 } else if (!ah
->dynack
.enabled
) {
1987 ath9k_enable_dynack(sc
);
1990 mutex_unlock(&sc
->mutex
);
1993 static bool ath9k_has_tx_pending(struct ath_softc
*sc
,
1998 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
1999 if (!ATH_TXQ_SETUP(sc
, i
))
2002 npend
= ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
],
2011 static void ath9k_flush(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
2012 u32 queues
, bool drop
)
2014 struct ath_softc
*sc
= hw
->priv
;
2015 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2017 if (ath9k_is_chanctx_enabled()) {
2018 if (!test_bit(ATH_OP_MULTI_CHANNEL
, &common
->op_flags
))
2022 * If MCC is active, extend the flush timeout
2023 * and wait for the HW/SW queues to become
2024 * empty. This needs to be done outside the
2025 * sc->mutex lock to allow the channel scheduler
2026 * to switch channel contexts.
2028 * The vif queues have been stopped in mac80211,
2029 * so there won't be any incoming frames.
2031 __ath9k_flush(hw
, queues
, drop
, true, true);
2035 mutex_lock(&sc
->mutex
);
2036 __ath9k_flush(hw
, queues
, drop
, true, false);
2037 mutex_unlock(&sc
->mutex
);
2040 void __ath9k_flush(struct ieee80211_hw
*hw
, u32 queues
, bool drop
,
2041 bool sw_pending
, bool timeout_override
)
2043 struct ath_softc
*sc
= hw
->priv
;
2044 struct ath_hw
*ah
= sc
->sc_ah
;
2045 struct ath_common
*common
= ath9k_hw_common(ah
);
2049 cancel_delayed_work_sync(&sc
->tx_complete_work
);
2051 if (ah
->ah_flags
& AH_UNPLUGGED
) {
2052 ath_dbg(common
, ANY
, "Device has been unplugged!\n");
2056 if (test_bit(ATH_OP_INVALID
, &common
->op_flags
)) {
2057 ath_dbg(common
, ANY
, "Device not present\n");
2061 spin_lock_bh(&sc
->chan_lock
);
2062 if (timeout_override
)
2065 timeout
= sc
->cur_chan
->flush_timeout
;
2066 spin_unlock_bh(&sc
->chan_lock
);
2068 ath_dbg(common
, CHAN_CTX
,
2069 "Flush timeout: %d\n", jiffies_to_msecs(timeout
));
2071 if (wait_event_timeout(sc
->tx_wait
, !ath9k_has_tx_pending(sc
, sw_pending
),
2076 ath9k_ps_wakeup(sc
);
2077 spin_lock_bh(&sc
->sc_pcu_lock
);
2078 drain_txq
= ath_drain_all_txq(sc
);
2079 spin_unlock_bh(&sc
->sc_pcu_lock
);
2082 ath_reset(sc
, NULL
);
2084 ath9k_ps_restore(sc
);
2087 ieee80211_queue_delayed_work(hw
, &sc
->tx_complete_work
, 0);
2090 static bool ath9k_tx_frames_pending(struct ieee80211_hw
*hw
)
2092 struct ath_softc
*sc
= hw
->priv
;
2094 return ath9k_has_tx_pending(sc
, true);
2097 static int ath9k_tx_last_beacon(struct ieee80211_hw
*hw
)
2099 struct ath_softc
*sc
= hw
->priv
;
2100 struct ath_hw
*ah
= sc
->sc_ah
;
2101 struct ieee80211_vif
*vif
;
2102 struct ath_vif
*avp
;
2104 struct ath_tx_status ts
;
2105 bool edma
= !!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
);
2108 vif
= sc
->beacon
.bslot
[0];
2112 if (!vif
->bss_conf
.enable_beacon
)
2115 avp
= (void *)vif
->drv_priv
;
2117 if (!sc
->beacon
.tx_processed
&& !edma
) {
2118 tasklet_disable(&sc
->bcon_tasklet
);
2121 if (!bf
|| !bf
->bf_mpdu
)
2124 status
= ath9k_hw_txprocdesc(ah
, bf
->bf_desc
, &ts
);
2125 if (status
== -EINPROGRESS
)
2128 sc
->beacon
.tx_processed
= true;
2129 sc
->beacon
.tx_last
= !(ts
.ts_status
& ATH9K_TXERR_MASK
);
2132 tasklet_enable(&sc
->bcon_tasklet
);
2135 return sc
->beacon
.tx_last
;
2138 static int ath9k_get_stats(struct ieee80211_hw
*hw
,
2139 struct ieee80211_low_level_stats
*stats
)
2141 struct ath_softc
*sc
= hw
->priv
;
2142 struct ath_hw
*ah
= sc
->sc_ah
;
2143 struct ath9k_mib_stats
*mib_stats
= &ah
->ah_mibStats
;
2145 stats
->dot11ACKFailureCount
= mib_stats
->ackrcv_bad
;
2146 stats
->dot11RTSFailureCount
= mib_stats
->rts_bad
;
2147 stats
->dot11FCSErrorCount
= mib_stats
->fcs_bad
;
2148 stats
->dot11RTSSuccessCount
= mib_stats
->rts_good
;
2152 static u32
fill_chainmask(u32 cap
, u32
new)
2157 for (i
= 0; cap
&& new; i
++, cap
>>= 1) {
2158 if (!(cap
& BIT(0)))
2170 static bool validate_antenna_mask(struct ath_hw
*ah
, u32 val
)
2172 if (AR_SREV_9300_20_OR_LATER(ah
))
2175 switch (val
& 0x7) {
2181 return (ah
->caps
.rx_chainmask
== 1);
2187 static int ath9k_set_antenna(struct ieee80211_hw
*hw
, u32 tx_ant
, u32 rx_ant
)
2189 struct ath_softc
*sc
= hw
->priv
;
2190 struct ath_hw
*ah
= sc
->sc_ah
;
2192 if (ah
->caps
.rx_chainmask
!= 1)
2195 if (!validate_antenna_mask(ah
, rx_ant
) || !tx_ant
)
2198 sc
->ant_rx
= rx_ant
;
2199 sc
->ant_tx
= tx_ant
;
2201 if (ah
->caps
.rx_chainmask
== 1)
2204 /* AR9100 runs into calibration issues if not all rx chains are enabled */
2205 if (AR_SREV_9100(ah
))
2206 ah
->rxchainmask
= 0x7;
2208 ah
->rxchainmask
= fill_chainmask(ah
->caps
.rx_chainmask
, rx_ant
);
2210 ah
->txchainmask
= fill_chainmask(ah
->caps
.tx_chainmask
, tx_ant
);
2211 ath9k_cmn_reload_chainmask(ah
);
2216 static int ath9k_get_antenna(struct ieee80211_hw
*hw
, u32
*tx_ant
, u32
*rx_ant
)
2218 struct ath_softc
*sc
= hw
->priv
;
2220 *tx_ant
= sc
->ant_tx
;
2221 *rx_ant
= sc
->ant_rx
;
2225 static void ath9k_sw_scan_start(struct ieee80211_hw
*hw
,
2226 struct ieee80211_vif
*vif
,
2229 struct ath_softc
*sc
= hw
->priv
;
2230 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2231 set_bit(ATH_OP_SCANNING
, &common
->op_flags
);
2234 static void ath9k_sw_scan_complete(struct ieee80211_hw
*hw
,
2235 struct ieee80211_vif
*vif
)
2237 struct ath_softc
*sc
= hw
->priv
;
2238 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2239 clear_bit(ATH_OP_SCANNING
, &common
->op_flags
);
2242 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT
2244 static void ath9k_cancel_pending_offchannel(struct ath_softc
*sc
)
2246 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2248 if (sc
->offchannel
.roc_vif
) {
2249 ath_dbg(common
, CHAN_CTX
,
2250 "%s: Aborting RoC\n", __func__
);
2252 del_timer_sync(&sc
->offchannel
.timer
);
2253 if (sc
->offchannel
.state
>= ATH_OFFCHANNEL_ROC_START
)
2254 ath_roc_complete(sc
, ATH_ROC_COMPLETE_ABORT
);
2257 if (test_bit(ATH_OP_SCANNING
, &common
->op_flags
)) {
2258 ath_dbg(common
, CHAN_CTX
,
2259 "%s: Aborting HW scan\n", __func__
);
2261 del_timer_sync(&sc
->offchannel
.timer
);
2262 ath_scan_complete(sc
, true);
2266 static int ath9k_hw_scan(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
2267 struct ieee80211_scan_request
*hw_req
)
2269 struct cfg80211_scan_request
*req
= &hw_req
->req
;
2270 struct ath_softc
*sc
= hw
->priv
;
2271 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2274 mutex_lock(&sc
->mutex
);
2276 if (WARN_ON(sc
->offchannel
.scan_req
)) {
2281 ath9k_ps_wakeup(sc
);
2282 set_bit(ATH_OP_SCANNING
, &common
->op_flags
);
2283 sc
->offchannel
.scan_vif
= vif
;
2284 sc
->offchannel
.scan_req
= req
;
2285 sc
->offchannel
.scan_idx
= 0;
2287 ath_dbg(common
, CHAN_CTX
, "HW scan request received on vif: %pM\n",
2290 if (sc
->offchannel
.state
== ATH_OFFCHANNEL_IDLE
) {
2291 ath_dbg(common
, CHAN_CTX
, "Starting HW scan\n");
2292 ath_offchannel_next(sc
);
2296 mutex_unlock(&sc
->mutex
);
2301 static void ath9k_cancel_hw_scan(struct ieee80211_hw
*hw
,
2302 struct ieee80211_vif
*vif
)
2304 struct ath_softc
*sc
= hw
->priv
;
2305 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2307 ath_dbg(common
, CHAN_CTX
, "Cancel HW scan on vif: %pM\n", vif
->addr
);
2309 mutex_lock(&sc
->mutex
);
2310 del_timer_sync(&sc
->offchannel
.timer
);
2311 ath_scan_complete(sc
, true);
2312 mutex_unlock(&sc
->mutex
);
2315 static int ath9k_remain_on_channel(struct ieee80211_hw
*hw
,
2316 struct ieee80211_vif
*vif
,
2317 struct ieee80211_channel
*chan
, int duration
,
2318 enum ieee80211_roc_type type
)
2320 struct ath_softc
*sc
= hw
->priv
;
2321 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2324 mutex_lock(&sc
->mutex
);
2326 if (WARN_ON(sc
->offchannel
.roc_vif
)) {
2331 ath9k_ps_wakeup(sc
);
2332 sc
->offchannel
.roc_vif
= vif
;
2333 sc
->offchannel
.roc_chan
= chan
;
2334 sc
->offchannel
.roc_duration
= duration
;
2336 ath_dbg(common
, CHAN_CTX
,
2337 "RoC request on vif: %pM, type: %d duration: %d\n",
2338 vif
->addr
, type
, duration
);
2340 if (sc
->offchannel
.state
== ATH_OFFCHANNEL_IDLE
) {
2341 ath_dbg(common
, CHAN_CTX
, "Starting RoC period\n");
2342 ath_offchannel_next(sc
);
2346 mutex_unlock(&sc
->mutex
);
2351 static int ath9k_cancel_remain_on_channel(struct ieee80211_hw
*hw
)
2353 struct ath_softc
*sc
= hw
->priv
;
2354 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2356 mutex_lock(&sc
->mutex
);
2358 ath_dbg(common
, CHAN_CTX
, "Cancel RoC\n");
2359 del_timer_sync(&sc
->offchannel
.timer
);
2361 if (sc
->offchannel
.roc_vif
) {
2362 if (sc
->offchannel
.state
>= ATH_OFFCHANNEL_ROC_START
)
2363 ath_roc_complete(sc
, ATH_ROC_COMPLETE_CANCEL
);
2366 mutex_unlock(&sc
->mutex
);
2371 static int ath9k_add_chanctx(struct ieee80211_hw
*hw
,
2372 struct ieee80211_chanctx_conf
*conf
)
2374 struct ath_softc
*sc
= hw
->priv
;
2375 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2376 struct ath_chanctx
*ctx
, **ptr
;
2379 mutex_lock(&sc
->mutex
);
2381 ath_for_each_chanctx(sc
, ctx
) {
2385 ptr
= (void *) conf
->drv_priv
;
2387 ctx
->assigned
= true;
2388 pos
= ctx
- &sc
->chanctx
[0];
2389 ctx
->hw_queue_base
= pos
* IEEE80211_NUM_ACS
;
2391 ath_dbg(common
, CHAN_CTX
,
2392 "Add channel context: %d MHz\n",
2393 conf
->def
.chan
->center_freq
);
2395 ath_chanctx_set_channel(sc
, ctx
, &conf
->def
);
2397 mutex_unlock(&sc
->mutex
);
2401 mutex_unlock(&sc
->mutex
);
2406 static void ath9k_remove_chanctx(struct ieee80211_hw
*hw
,
2407 struct ieee80211_chanctx_conf
*conf
)
2409 struct ath_softc
*sc
= hw
->priv
;
2410 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2411 struct ath_chanctx
*ctx
= ath_chanctx_get(conf
);
2413 mutex_lock(&sc
->mutex
);
2415 ath_dbg(common
, CHAN_CTX
,
2416 "Remove channel context: %d MHz\n",
2417 conf
->def
.chan
->center_freq
);
2419 ctx
->assigned
= false;
2420 ctx
->hw_queue_base
= 0;
2421 ath_chanctx_event(sc
, NULL
, ATH_CHANCTX_EVENT_UNASSIGN
);
2423 mutex_unlock(&sc
->mutex
);
2426 static void ath9k_change_chanctx(struct ieee80211_hw
*hw
,
2427 struct ieee80211_chanctx_conf
*conf
,
2430 struct ath_softc
*sc
= hw
->priv
;
2431 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2432 struct ath_chanctx
*ctx
= ath_chanctx_get(conf
);
2434 mutex_lock(&sc
->mutex
);
2435 ath_dbg(common
, CHAN_CTX
,
2436 "Change channel context: %d MHz\n",
2437 conf
->def
.chan
->center_freq
);
2438 ath_chanctx_set_channel(sc
, ctx
, &conf
->def
);
2439 mutex_unlock(&sc
->mutex
);
2442 static int ath9k_assign_vif_chanctx(struct ieee80211_hw
*hw
,
2443 struct ieee80211_vif
*vif
,
2444 struct ieee80211_chanctx_conf
*conf
)
2446 struct ath_softc
*sc
= hw
->priv
;
2447 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2448 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
2449 struct ath_chanctx
*ctx
= ath_chanctx_get(conf
);
2452 ath9k_cancel_pending_offchannel(sc
);
2454 mutex_lock(&sc
->mutex
);
2456 ath_dbg(common
, CHAN_CTX
,
2457 "Assign VIF (addr: %pM, type: %d, p2p: %d) to channel context: %d MHz\n",
2458 vif
->addr
, vif
->type
, vif
->p2p
,
2459 conf
->def
.chan
->center_freq
);
2462 ctx
->nvifs_assigned
++;
2463 list_add_tail(&avp
->list
, &ctx
->vifs
);
2464 ath9k_calculate_summary_state(sc
, ctx
);
2465 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++)
2466 vif
->hw_queue
[i
] = ctx
->hw_queue_base
+ i
;
2468 mutex_unlock(&sc
->mutex
);
2473 static void ath9k_unassign_vif_chanctx(struct ieee80211_hw
*hw
,
2474 struct ieee80211_vif
*vif
,
2475 struct ieee80211_chanctx_conf
*conf
)
2477 struct ath_softc
*sc
= hw
->priv
;
2478 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2479 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
2480 struct ath_chanctx
*ctx
= ath_chanctx_get(conf
);
2483 ath9k_cancel_pending_offchannel(sc
);
2485 mutex_lock(&sc
->mutex
);
2487 ath_dbg(common
, CHAN_CTX
,
2488 "Remove VIF (addr: %pM, type: %d, p2p: %d) from channel context: %d MHz\n",
2489 vif
->addr
, vif
->type
, vif
->p2p
,
2490 conf
->def
.chan
->center_freq
);
2492 avp
->chanctx
= NULL
;
2493 ctx
->nvifs_assigned
--;
2494 list_del(&avp
->list
);
2495 ath9k_calculate_summary_state(sc
, ctx
);
2496 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
2497 vif
->hw_queue
[ac
] = IEEE80211_INVAL_HW_QUEUE
;
2499 mutex_unlock(&sc
->mutex
);
2502 static void ath9k_mgd_prepare_tx(struct ieee80211_hw
*hw
,
2503 struct ieee80211_vif
*vif
)
2505 struct ath_softc
*sc
= hw
->priv
;
2506 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2507 struct ath_vif
*avp
= (struct ath_vif
*) vif
->drv_priv
;
2508 struct ath_beacon_config
*cur_conf
;
2509 struct ath_chanctx
*go_ctx
;
2510 unsigned long timeout
;
2511 bool changed
= false;
2514 if (!test_bit(ATH_OP_MULTI_CHANNEL
, &common
->op_flags
))
2520 mutex_lock(&sc
->mutex
);
2522 spin_lock_bh(&sc
->chan_lock
);
2523 if (sc
->next_chan
|| (sc
->cur_chan
!= avp
->chanctx
))
2525 spin_unlock_bh(&sc
->chan_lock
);
2530 ath9k_cancel_pending_offchannel(sc
);
2532 go_ctx
= ath_is_go_chanctx_present(sc
);
2536 * Wait till the GO interface gets a chance
2537 * to send out an NoA.
2539 spin_lock_bh(&sc
->chan_lock
);
2540 sc
->sched
.mgd_prepare_tx
= true;
2541 cur_conf
= &go_ctx
->beacon
;
2542 beacon_int
= TU_TO_USEC(cur_conf
->beacon_interval
);
2543 spin_unlock_bh(&sc
->chan_lock
);
2545 timeout
= usecs_to_jiffies(beacon_int
* 2);
2546 init_completion(&sc
->go_beacon
);
2548 mutex_unlock(&sc
->mutex
);
2550 if (wait_for_completion_timeout(&sc
->go_beacon
,
2552 ath_dbg(common
, CHAN_CTX
,
2553 "Failed to send new NoA\n");
2555 spin_lock_bh(&sc
->chan_lock
);
2556 sc
->sched
.mgd_prepare_tx
= false;
2557 spin_unlock_bh(&sc
->chan_lock
);
2560 mutex_lock(&sc
->mutex
);
2563 ath_dbg(common
, CHAN_CTX
,
2564 "%s: Set chanctx state to FORCE_ACTIVE for vif: %pM\n",
2565 __func__
, vif
->addr
);
2567 spin_lock_bh(&sc
->chan_lock
);
2568 sc
->next_chan
= avp
->chanctx
;
2569 sc
->sched
.state
= ATH_CHANCTX_STATE_FORCE_ACTIVE
;
2570 spin_unlock_bh(&sc
->chan_lock
);
2572 ath_chanctx_set_next(sc
, true);
2574 mutex_unlock(&sc
->mutex
);
2577 void ath9k_fill_chanctx_ops(void)
2579 if (!ath9k_is_chanctx_enabled())
2582 ath9k_ops
.hw_scan
= ath9k_hw_scan
;
2583 ath9k_ops
.cancel_hw_scan
= ath9k_cancel_hw_scan
;
2584 ath9k_ops
.remain_on_channel
= ath9k_remain_on_channel
;
2585 ath9k_ops
.cancel_remain_on_channel
= ath9k_cancel_remain_on_channel
;
2586 ath9k_ops
.add_chanctx
= ath9k_add_chanctx
;
2587 ath9k_ops
.remove_chanctx
= ath9k_remove_chanctx
;
2588 ath9k_ops
.change_chanctx
= ath9k_change_chanctx
;
2589 ath9k_ops
.assign_vif_chanctx
= ath9k_assign_vif_chanctx
;
2590 ath9k_ops
.unassign_vif_chanctx
= ath9k_unassign_vif_chanctx
;
2591 ath9k_ops
.mgd_prepare_tx
= ath9k_mgd_prepare_tx
;
2596 static int ath9k_get_txpower(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
2599 struct ath_softc
*sc
= hw
->priv
;
2600 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
2602 mutex_lock(&sc
->mutex
);
2604 *dbm
= avp
->chanctx
->cur_txpower
;
2606 *dbm
= sc
->cur_chan
->cur_txpower
;
2607 mutex_unlock(&sc
->mutex
);
2614 struct ieee80211_ops ath9k_ops
= {
2616 .start
= ath9k_start
,
2618 .add_interface
= ath9k_add_interface
,
2619 .change_interface
= ath9k_change_interface
,
2620 .remove_interface
= ath9k_remove_interface
,
2621 .config
= ath9k_config
,
2622 .configure_filter
= ath9k_configure_filter
,
2623 .sta_state
= ath9k_sta_state
,
2624 .sta_notify
= ath9k_sta_notify
,
2625 .conf_tx
= ath9k_conf_tx
,
2626 .bss_info_changed
= ath9k_bss_info_changed
,
2627 .set_key
= ath9k_set_key
,
2628 .get_tsf
= ath9k_get_tsf
,
2629 .set_tsf
= ath9k_set_tsf
,
2630 .reset_tsf
= ath9k_reset_tsf
,
2631 .ampdu_action
= ath9k_ampdu_action
,
2632 .get_survey
= ath9k_get_survey
,
2633 .rfkill_poll
= ath9k_rfkill_poll_state
,
2634 .set_coverage_class
= ath9k_set_coverage_class
,
2635 .flush
= ath9k_flush
,
2636 .tx_frames_pending
= ath9k_tx_frames_pending
,
2637 .tx_last_beacon
= ath9k_tx_last_beacon
,
2638 .release_buffered_frames
= ath9k_release_buffered_frames
,
2639 .get_stats
= ath9k_get_stats
,
2640 .set_antenna
= ath9k_set_antenna
,
2641 .get_antenna
= ath9k_get_antenna
,
2643 #ifdef CONFIG_ATH9K_WOW
2644 .suspend
= ath9k_suspend
,
2645 .resume
= ath9k_resume
,
2646 .set_wakeup
= ath9k_set_wakeup
,
2649 #ifdef CONFIG_ATH9K_DEBUGFS
2650 .get_et_sset_count
= ath9k_get_et_sset_count
,
2651 .get_et_stats
= ath9k_get_et_stats
,
2652 .get_et_strings
= ath9k_get_et_strings
,
2655 #if defined(CONFIG_MAC80211_DEBUGFS) && defined(CONFIG_ATH9K_STATION_STATISTICS)
2656 .sta_add_debugfs
= ath9k_sta_add_debugfs
,
2658 .sw_scan_start
= ath9k_sw_scan_start
,
2659 .sw_scan_complete
= ath9k_sw_scan_complete
,
2660 .get_txpower
= ath9k_get_txpower
,