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 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_drain_all_txq(sc
))
202 if (!ath_stoprecv(sc
))
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
)
260 struct ath_hw
*ah
= sc
->sc_ah
;
261 struct ath_common
*common
= ath9k_hw_common(ah
);
262 struct ath9k_hw_cal_data
*caldata
= NULL
;
267 __ath_cancel_work(sc
);
269 spin_lock_bh(&sc
->sc_pcu_lock
);
271 if (!(sc
->hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
)) {
273 caldata
= &sc
->caldata
;
282 if (!ath_prepare_reset(sc
, flush
))
285 ath_dbg(common
, CONFIG
, "Reset to %u MHz, HT40: %d fastcc: %d\n",
286 hchan
->channel
, IS_CHAN_HT40(hchan
), fastcc
);
288 r
= ath9k_hw_reset(ah
, hchan
, caldata
, fastcc
);
291 "Unable to reset channel, reset status %d\n", r
);
295 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
) &&
296 (sc
->hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
))
297 ath9k_mci_set_txpower(sc
, true, false);
299 if (!ath_complete_reset(sc
, true))
303 spin_unlock_bh(&sc
->sc_pcu_lock
);
309 * Set/change channels. If the channel is really being changed, it's done
310 * by reseting the chip. To accomplish this we must first cleanup any pending
311 * DMA, then restart stuff.
313 static int ath_set_channel(struct ath_softc
*sc
, struct ieee80211_hw
*hw
,
314 struct ath9k_channel
*hchan
)
318 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
))
321 r
= ath_reset_internal(sc
, hchan
);
326 static void ath_node_attach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
,
327 struct ieee80211_vif
*vif
)
331 an
= (struct ath_node
*)sta
->drv_priv
;
337 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
) {
338 ath_tx_node_init(sc
, an
);
339 an
->maxampdu
= 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR
+
340 sta
->ht_cap
.ampdu_factor
);
341 density
= ath9k_parse_mpdudensity(sta
->ht_cap
.ampdu_density
);
342 an
->mpdudensity
= density
;
346 static void ath_node_detach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
)
348 struct ath_node
*an
= (struct ath_node
*)sta
->drv_priv
;
350 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
351 ath_tx_node_cleanup(sc
, an
);
354 void ath9k_tasklet(unsigned long data
)
356 struct ath_softc
*sc
= (struct ath_softc
*)data
;
357 struct ath_hw
*ah
= sc
->sc_ah
;
358 struct ath_common
*common
= ath9k_hw_common(ah
);
359 enum ath_reset_type type
;
361 u32 status
= sc
->intrstatus
;
365 spin_lock(&sc
->sc_pcu_lock
);
367 if ((status
& ATH9K_INT_FATAL
) ||
368 (status
& ATH9K_INT_BB_WATCHDOG
)) {
370 if (status
& ATH9K_INT_FATAL
)
371 type
= RESET_TYPE_FATAL_INT
;
373 type
= RESET_TYPE_BB_WATCHDOG
;
375 ath9k_queue_reset(sc
, type
);
379 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
380 if ((status
& ATH9K_INT_TSFOOR
) && sc
->ps_enabled
) {
382 * TSF sync does not look correct; remain awake to sync with
385 ath_dbg(common
, PS
, "TSFOOR - Sync with next Beacon\n");
386 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
| PS_BEACON_SYNC
;
388 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
390 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
391 rxmask
= (ATH9K_INT_RXHP
| ATH9K_INT_RXLP
| ATH9K_INT_RXEOL
|
394 rxmask
= (ATH9K_INT_RX
| ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
396 if (status
& rxmask
) {
397 /* Check for high priority Rx first */
398 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
399 (status
& ATH9K_INT_RXHP
))
400 ath_rx_tasklet(sc
, 0, true);
402 ath_rx_tasklet(sc
, 0, false);
405 if (status
& ATH9K_INT_TX
) {
406 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
407 ath_tx_edma_tasklet(sc
);
412 ath9k_btcoex_handle_interrupt(sc
, status
);
415 /* re-enable hardware interrupt */
416 ath9k_hw_enable_interrupts(ah
);
418 spin_unlock(&sc
->sc_pcu_lock
);
419 ath9k_ps_restore(sc
);
422 irqreturn_t
ath_isr(int irq
, void *dev
)
424 #define SCHED_INTR ( \
426 ATH9K_INT_BB_WATCHDOG | \
436 ATH9K_INT_GENTIMER | \
439 struct ath_softc
*sc
= dev
;
440 struct ath_hw
*ah
= sc
->sc_ah
;
441 struct ath_common
*common
= ath9k_hw_common(ah
);
442 enum ath9k_int status
;
446 * The hardware is not ready/present, don't
447 * touch anything. Note this can happen early
448 * on if the IRQ is shared.
450 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
))
453 /* shared irq, not for us */
455 if (!ath9k_hw_intrpend(ah
))
458 if (test_bit(SC_OP_HW_RESET
, &sc
->sc_flags
)) {
459 ath9k_hw_kill_interrupts(ah
);
464 * Figure out the reason(s) for the interrupt. Note
465 * that the hal returns a pseudo-ISR that may include
466 * bits we haven't explicitly enabled so we mask the
467 * value to insure we only process bits we requested.
469 ath9k_hw_getisr(ah
, &status
); /* NB: clears ISR too */
470 status
&= ah
->imask
; /* discard unasked-for bits */
473 * If there are no status bits set, then this interrupt was not
474 * for me (should have been caught above).
479 /* Cache the status */
480 sc
->intrstatus
= status
;
482 if (status
& SCHED_INTR
)
486 * If a FATAL or RXORN interrupt is received, we have to reset the
489 if ((status
& ATH9K_INT_FATAL
) || ((status
& ATH9K_INT_RXORN
) &&
490 !(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)))
493 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
494 (status
& ATH9K_INT_BB_WATCHDOG
)) {
496 spin_lock(&common
->cc_lock
);
497 ath_hw_cycle_counters_update(common
);
498 ar9003_hw_bb_watchdog_dbg_info(ah
);
499 spin_unlock(&common
->cc_lock
);
503 #ifdef CONFIG_PM_SLEEP
504 if (status
& ATH9K_INT_BMISS
) {
505 if (atomic_read(&sc
->wow_sleep_proc_intr
) == 0) {
506 ath_dbg(common
, ANY
, "during WoW we got a BMISS\n");
507 atomic_inc(&sc
->wow_got_bmiss_intr
);
508 atomic_dec(&sc
->wow_sleep_proc_intr
);
512 if (status
& ATH9K_INT_SWBA
)
513 tasklet_schedule(&sc
->bcon_tasklet
);
515 if (status
& ATH9K_INT_TXURN
)
516 ath9k_hw_updatetxtriglevel(ah
, true);
518 if (status
& ATH9K_INT_RXEOL
) {
519 ah
->imask
&= ~(ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
520 ath9k_hw_set_interrupts(ah
);
523 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
524 if (status
& ATH9K_INT_TIM_TIMER
) {
525 if (ATH_DBG_WARN_ON_ONCE(sc
->ps_idle
))
527 /* Clear RxAbort bit so that we can
529 ath9k_setpower(sc
, ATH9K_PM_AWAKE
);
530 spin_lock(&sc
->sc_pm_lock
);
531 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
532 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
;
533 spin_unlock(&sc
->sc_pm_lock
);
538 ath_debug_stat_interrupt(sc
, status
);
541 /* turn off every interrupt */
542 ath9k_hw_disable_interrupts(ah
);
543 tasklet_schedule(&sc
->intr_tq
);
551 static int ath_reset(struct ath_softc
*sc
)
557 r
= ath_reset_internal(sc
, NULL
);
559 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
560 if (!ATH_TXQ_SETUP(sc
, i
))
563 spin_lock_bh(&sc
->tx
.txq
[i
].axq_lock
);
564 ath_txq_schedule(sc
, &sc
->tx
.txq
[i
]);
565 spin_unlock_bh(&sc
->tx
.txq
[i
].axq_lock
);
568 ath9k_ps_restore(sc
);
573 void ath9k_queue_reset(struct ath_softc
*sc
, enum ath_reset_type type
)
575 #ifdef CONFIG_ATH9K_DEBUGFS
576 RESET_STAT_INC(sc
, type
);
578 set_bit(SC_OP_HW_RESET
, &sc
->sc_flags
);
579 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
582 void ath_reset_work(struct work_struct
*work
)
584 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, hw_reset_work
);
589 /**********************/
590 /* mac80211 callbacks */
591 /**********************/
593 static int ath9k_start(struct ieee80211_hw
*hw
)
595 struct ath_softc
*sc
= hw
->priv
;
596 struct ath_hw
*ah
= sc
->sc_ah
;
597 struct ath_common
*common
= ath9k_hw_common(ah
);
598 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
599 struct ath9k_channel
*init_channel
;
602 ath_dbg(common
, CONFIG
,
603 "Starting driver with initial channel: %d MHz\n",
604 curchan
->center_freq
);
607 mutex_lock(&sc
->mutex
);
609 init_channel
= ath9k_cmn_get_curchannel(hw
, ah
);
611 /* Reset SERDES registers */
612 ath9k_hw_configpcipowersave(ah
, false);
615 * The basic interface to setting the hardware in a good
616 * state is ``reset''. On return the hardware is known to
617 * be powered up and with interrupts disabled. This must
618 * be followed by initialization of the appropriate bits
619 * and then setup of the interrupt mask.
621 spin_lock_bh(&sc
->sc_pcu_lock
);
623 atomic_set(&ah
->intr_ref_cnt
, -1);
625 r
= ath9k_hw_reset(ah
, init_channel
, ah
->caldata
, false);
628 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
629 r
, curchan
->center_freq
);
630 ah
->reset_power_on
= false;
633 /* Setup our intr mask. */
634 ah
->imask
= ATH9K_INT_TX
| ATH9K_INT_RXEOL
|
635 ATH9K_INT_RXORN
| ATH9K_INT_FATAL
|
638 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
639 ah
->imask
|= ATH9K_INT_RXHP
|
641 ATH9K_INT_BB_WATCHDOG
;
643 ah
->imask
|= ATH9K_INT_RX
;
645 ah
->imask
|= ATH9K_INT_GTT
;
647 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
648 ah
->imask
|= ATH9K_INT_CST
;
652 clear_bit(SC_OP_INVALID
, &sc
->sc_flags
);
653 sc
->sc_ah
->is_monitoring
= false;
655 if (!ath_complete_reset(sc
, false))
656 ah
->reset_power_on
= false;
658 if (ah
->led_pin
>= 0) {
659 ath9k_hw_cfg_output(ah
, ah
->led_pin
,
660 AR_GPIO_OUTPUT_MUX_AS_OUTPUT
);
661 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 0);
665 * Reset key cache to sane defaults (all entries cleared) instead of
666 * semi-random values after suspend/resume.
668 ath9k_cmn_init_crypto(sc
->sc_ah
);
670 spin_unlock_bh(&sc
->sc_pcu_lock
);
672 mutex_unlock(&sc
->mutex
);
674 ath9k_ps_restore(sc
);
679 static void ath9k_tx(struct ieee80211_hw
*hw
,
680 struct ieee80211_tx_control
*control
,
683 struct ath_softc
*sc
= hw
->priv
;
684 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
685 struct ath_tx_control txctl
;
686 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
689 if (sc
->ps_enabled
) {
691 * mac80211 does not set PM field for normal data frames, so we
692 * need to update that based on the current PS mode.
694 if (ieee80211_is_data(hdr
->frame_control
) &&
695 !ieee80211_is_nullfunc(hdr
->frame_control
) &&
696 !ieee80211_has_pm(hdr
->frame_control
)) {
698 "Add PM=1 for a TX frame while in PS mode\n");
699 hdr
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
703 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_NETWORK_SLEEP
)) {
705 * We are using PS-Poll and mac80211 can request TX while in
706 * power save mode. Need to wake up hardware for the TX to be
707 * completed and if needed, also for RX of buffered frames.
710 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
711 if (!(sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
712 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
713 if (ieee80211_is_pspoll(hdr
->frame_control
)) {
715 "Sending PS-Poll to pick a buffered frame\n");
716 sc
->ps_flags
|= PS_WAIT_FOR_PSPOLL_DATA
;
718 ath_dbg(common
, PS
, "Wake up to complete TX\n");
719 sc
->ps_flags
|= PS_WAIT_FOR_TX_ACK
;
722 * The actual restore operation will happen only after
723 * the ps_flags bit is cleared. We are just dropping
724 * the ps_usecount here.
726 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
727 ath9k_ps_restore(sc
);
731 * Cannot tx while the hardware is in full sleep, it first needs a full
732 * chip reset to recover from that
734 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_FULL_SLEEP
)) {
735 ath_err(common
, "TX while HW is in FULL_SLEEP mode\n");
739 memset(&txctl
, 0, sizeof(struct ath_tx_control
));
740 txctl
.txq
= sc
->tx
.txq_map
[skb_get_queue_mapping(skb
)];
741 txctl
.sta
= control
->sta
;
743 ath_dbg(common
, XMIT
, "transmitting packet, skb: %p\n", skb
);
745 if (ath_tx_start(hw
, skb
, &txctl
) != 0) {
746 ath_dbg(common
, XMIT
, "TX failed\n");
747 TX_STAT_INC(txctl
.txq
->axq_qnum
, txfailed
);
753 ieee80211_free_txskb(hw
, skb
);
756 static void ath9k_stop(struct ieee80211_hw
*hw
)
758 struct ath_softc
*sc
= hw
->priv
;
759 struct ath_hw
*ah
= sc
->sc_ah
;
760 struct ath_common
*common
= ath9k_hw_common(ah
);
763 mutex_lock(&sc
->mutex
);
766 del_timer_sync(&sc
->rx_poll_timer
);
768 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
)) {
769 ath_dbg(common
, ANY
, "Device not present\n");
770 mutex_unlock(&sc
->mutex
);
774 /* Ensure HW is awake when we try to shut it down. */
777 spin_lock_bh(&sc
->sc_pcu_lock
);
779 /* prevent tasklets to enable interrupts once we disable them */
780 ah
->imask
&= ~ATH9K_INT_GLOBAL
;
782 /* make sure h/w will not generate any interrupt
783 * before setting the invalid flag. */
784 ath9k_hw_disable_interrupts(ah
);
786 spin_unlock_bh(&sc
->sc_pcu_lock
);
788 /* we can now sync irq and kill any running tasklets, since we already
789 * disabled interrupts and not holding a spin lock */
790 synchronize_irq(sc
->irq
);
791 tasklet_kill(&sc
->intr_tq
);
792 tasklet_kill(&sc
->bcon_tasklet
);
794 prev_idle
= sc
->ps_idle
;
797 spin_lock_bh(&sc
->sc_pcu_lock
);
799 if (ah
->led_pin
>= 0) {
800 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 1);
801 ath9k_hw_cfg_gpio_input(ah
, ah
->led_pin
);
804 ath_prepare_reset(sc
, true);
807 dev_kfree_skb_any(sc
->rx
.frag
);
812 ah
->curchan
= ath9k_cmn_get_curchannel(hw
, ah
);
814 ath9k_hw_reset(ah
, ah
->curchan
, ah
->caldata
, false);
815 ath9k_hw_phy_disable(ah
);
817 ath9k_hw_configpcipowersave(ah
, true);
819 spin_unlock_bh(&sc
->sc_pcu_lock
);
821 ath9k_ps_restore(sc
);
823 set_bit(SC_OP_INVALID
, &sc
->sc_flags
);
824 sc
->ps_idle
= prev_idle
;
826 mutex_unlock(&sc
->mutex
);
828 ath_dbg(common
, CONFIG
, "Driver halt\n");
831 bool ath9k_uses_beacons(int type
)
834 case NL80211_IFTYPE_AP
:
835 case NL80211_IFTYPE_ADHOC
:
836 case NL80211_IFTYPE_MESH_POINT
:
843 static void ath9k_vif_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
845 struct ath9k_vif_iter_data
*iter_data
= data
;
848 if (iter_data
->hw_macaddr
)
849 for (i
= 0; i
< ETH_ALEN
; i
++)
850 iter_data
->mask
[i
] &=
851 ~(iter_data
->hw_macaddr
[i
] ^ mac
[i
]);
854 case NL80211_IFTYPE_AP
:
857 case NL80211_IFTYPE_STATION
:
858 iter_data
->nstations
++;
860 case NL80211_IFTYPE_ADHOC
:
861 iter_data
->nadhocs
++;
863 case NL80211_IFTYPE_MESH_POINT
:
864 iter_data
->nmeshes
++;
866 case NL80211_IFTYPE_WDS
:
874 static void ath9k_sta_vif_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
876 struct ath_softc
*sc
= data
;
877 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
879 if (vif
->type
!= NL80211_IFTYPE_STATION
)
882 if (avp
->primary_sta_vif
)
883 ath9k_set_assoc_state(sc
, vif
);
886 /* Called with sc->mutex held. */
887 void ath9k_calculate_iter_data(struct ieee80211_hw
*hw
,
888 struct ieee80211_vif
*vif
,
889 struct ath9k_vif_iter_data
*iter_data
)
891 struct ath_softc
*sc
= hw
->priv
;
892 struct ath_hw
*ah
= sc
->sc_ah
;
893 struct ath_common
*common
= ath9k_hw_common(ah
);
896 * Use the hardware MAC address as reference, the hardware uses it
897 * together with the BSSID mask when matching addresses.
899 memset(iter_data
, 0, sizeof(*iter_data
));
900 iter_data
->hw_macaddr
= common
->macaddr
;
901 memset(&iter_data
->mask
, 0xff, ETH_ALEN
);
904 ath9k_vif_iter(iter_data
, vif
->addr
, vif
);
906 /* Get list of all active MAC addresses */
907 ieee80211_iterate_active_interfaces_atomic(
908 sc
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
909 ath9k_vif_iter
, iter_data
);
912 /* Called with sc->mutex held. */
913 static void ath9k_calculate_summary_state(struct ieee80211_hw
*hw
,
914 struct ieee80211_vif
*vif
)
916 struct ath_softc
*sc
= hw
->priv
;
917 struct ath_hw
*ah
= sc
->sc_ah
;
918 struct ath_common
*common
= ath9k_hw_common(ah
);
919 struct ath9k_vif_iter_data iter_data
;
920 enum nl80211_iftype old_opmode
= ah
->opmode
;
922 ath9k_calculate_iter_data(hw
, vif
, &iter_data
);
924 memcpy(common
->bssidmask
, iter_data
.mask
, ETH_ALEN
);
925 ath_hw_setbssidmask(common
);
927 if (iter_data
.naps
> 0) {
928 ath9k_hw_set_tsfadjust(ah
, true);
929 ah
->opmode
= NL80211_IFTYPE_AP
;
931 ath9k_hw_set_tsfadjust(ah
, false);
933 if (iter_data
.nmeshes
)
934 ah
->opmode
= NL80211_IFTYPE_MESH_POINT
;
935 else if (iter_data
.nwds
)
936 ah
->opmode
= NL80211_IFTYPE_AP
;
937 else if (iter_data
.nadhocs
)
938 ah
->opmode
= NL80211_IFTYPE_ADHOC
;
940 ah
->opmode
= NL80211_IFTYPE_STATION
;
943 ath9k_hw_setopmode(ah
);
945 if ((iter_data
.nstations
+ iter_data
.nadhocs
+ iter_data
.nmeshes
) > 0)
946 ah
->imask
|= ATH9K_INT_TSFOOR
;
948 ah
->imask
&= ~ATH9K_INT_TSFOOR
;
950 ath9k_hw_set_interrupts(ah
);
953 * If we are changing the opmode to STATION,
954 * a beacon sync needs to be done.
956 if (ah
->opmode
== NL80211_IFTYPE_STATION
&&
957 old_opmode
== NL80211_IFTYPE_AP
&&
958 test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
)) {
959 ieee80211_iterate_active_interfaces_atomic(
960 sc
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
961 ath9k_sta_vif_iter
, sc
);
965 static int ath9k_add_interface(struct ieee80211_hw
*hw
,
966 struct ieee80211_vif
*vif
)
968 struct ath_softc
*sc
= hw
->priv
;
969 struct ath_hw
*ah
= sc
->sc_ah
;
970 struct ath_common
*common
= ath9k_hw_common(ah
);
972 mutex_lock(&sc
->mutex
);
974 ath_dbg(common
, CONFIG
, "Attach a VIF of type: %d\n", vif
->type
);
978 ath9k_calculate_summary_state(hw
, vif
);
979 ath9k_ps_restore(sc
);
981 if (ath9k_uses_beacons(vif
->type
))
982 ath9k_beacon_assign_slot(sc
, vif
);
984 mutex_unlock(&sc
->mutex
);
988 static int ath9k_change_interface(struct ieee80211_hw
*hw
,
989 struct ieee80211_vif
*vif
,
990 enum nl80211_iftype new_type
,
993 struct ath_softc
*sc
= hw
->priv
;
994 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
996 ath_dbg(common
, CONFIG
, "Change Interface\n");
997 mutex_lock(&sc
->mutex
);
999 if (ath9k_uses_beacons(vif
->type
))
1000 ath9k_beacon_remove_slot(sc
, vif
);
1002 vif
->type
= new_type
;
1005 ath9k_ps_wakeup(sc
);
1006 ath9k_calculate_summary_state(hw
, vif
);
1007 ath9k_ps_restore(sc
);
1009 if (ath9k_uses_beacons(vif
->type
))
1010 ath9k_beacon_assign_slot(sc
, vif
);
1012 mutex_unlock(&sc
->mutex
);
1016 static void ath9k_remove_interface(struct ieee80211_hw
*hw
,
1017 struct ieee80211_vif
*vif
)
1019 struct ath_softc
*sc
= hw
->priv
;
1020 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1022 ath_dbg(common
, CONFIG
, "Detach Interface\n");
1024 mutex_lock(&sc
->mutex
);
1028 if (ath9k_uses_beacons(vif
->type
))
1029 ath9k_beacon_remove_slot(sc
, vif
);
1031 ath9k_ps_wakeup(sc
);
1032 ath9k_calculate_summary_state(hw
, NULL
);
1033 ath9k_ps_restore(sc
);
1035 mutex_unlock(&sc
->mutex
);
1038 static void ath9k_enable_ps(struct ath_softc
*sc
)
1040 struct ath_hw
*ah
= sc
->sc_ah
;
1041 struct ath_common
*common
= ath9k_hw_common(ah
);
1043 sc
->ps_enabled
= true;
1044 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1045 if ((ah
->imask
& ATH9K_INT_TIM_TIMER
) == 0) {
1046 ah
->imask
|= ATH9K_INT_TIM_TIMER
;
1047 ath9k_hw_set_interrupts(ah
);
1049 ath9k_hw_setrxabort(ah
, 1);
1051 ath_dbg(common
, PS
, "PowerSave enabled\n");
1054 static void ath9k_disable_ps(struct ath_softc
*sc
)
1056 struct ath_hw
*ah
= sc
->sc_ah
;
1057 struct ath_common
*common
= ath9k_hw_common(ah
);
1059 sc
->ps_enabled
= false;
1060 ath9k_hw_setpower(ah
, ATH9K_PM_AWAKE
);
1061 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1062 ath9k_hw_setrxabort(ah
, 0);
1063 sc
->ps_flags
&= ~(PS_WAIT_FOR_BEACON
|
1065 PS_WAIT_FOR_PSPOLL_DATA
|
1066 PS_WAIT_FOR_TX_ACK
);
1067 if (ah
->imask
& ATH9K_INT_TIM_TIMER
) {
1068 ah
->imask
&= ~ATH9K_INT_TIM_TIMER
;
1069 ath9k_hw_set_interrupts(ah
);
1072 ath_dbg(common
, PS
, "PowerSave disabled\n");
1075 void ath9k_spectral_scan_trigger(struct ieee80211_hw
*hw
)
1077 struct ath_softc
*sc
= hw
->priv
;
1078 struct ath_hw
*ah
= sc
->sc_ah
;
1079 struct ath_common
*common
= ath9k_hw_common(ah
);
1082 if (!ath9k_hw_ops(ah
)->spectral_scan_trigger
) {
1083 ath_err(common
, "spectrum analyzer not implemented on this hardware\n");
1087 ath9k_ps_wakeup(sc
);
1088 rxfilter
= ath9k_hw_getrxfilter(ah
);
1089 ath9k_hw_setrxfilter(ah
, rxfilter
|
1090 ATH9K_RX_FILTER_PHYRADAR
|
1091 ATH9K_RX_FILTER_PHYERR
);
1093 /* TODO: usually this should not be neccesary, but for some reason
1094 * (or in some mode?) the trigger must be called after the
1095 * configuration, otherwise the register will have its values reset
1096 * (on my ar9220 to value 0x01002310)
1098 ath9k_spectral_scan_config(hw
, sc
->spectral_mode
);
1099 ath9k_hw_ops(ah
)->spectral_scan_trigger(ah
);
1100 ath9k_ps_restore(sc
);
1103 int ath9k_spectral_scan_config(struct ieee80211_hw
*hw
,
1104 enum spectral_mode spectral_mode
)
1106 struct ath_softc
*sc
= hw
->priv
;
1107 struct ath_hw
*ah
= sc
->sc_ah
;
1108 struct ath_common
*common
= ath9k_hw_common(ah
);
1109 struct ath_spec_scan param
;
1111 if (!ath9k_hw_ops(ah
)->spectral_scan_trigger
) {
1112 ath_err(common
, "spectrum analyzer not implemented on this hardware\n");
1116 /* NOTE: this will generate a few samples ...
1118 * TODO: review default parameters, and/or define an interface to set
1122 param
.short_repeat
= true;
1124 param
.endless
= false;
1125 param
.period
= 0xFF;
1126 param
.fft_period
= 0xF;
1128 switch (spectral_mode
) {
1129 case SPECTRAL_DISABLED
:
1132 case SPECTRAL_BACKGROUND
:
1133 /* send endless samples.
1134 * TODO: is this really useful for "background"?
1138 case SPECTRAL_CHANSCAN
:
1140 case SPECTRAL_MANUAL
:
1146 ath9k_ps_wakeup(sc
);
1147 ath9k_hw_ops(ah
)->spectral_scan_config(ah
, ¶m
);
1148 ath9k_ps_restore(sc
);
1150 sc
->spectral_mode
= spectral_mode
;
1155 static int ath9k_config(struct ieee80211_hw
*hw
, u32 changed
)
1157 struct ath_softc
*sc
= hw
->priv
;
1158 struct ath_hw
*ah
= sc
->sc_ah
;
1159 struct ath_common
*common
= ath9k_hw_common(ah
);
1160 struct ieee80211_conf
*conf
= &hw
->conf
;
1161 bool reset_channel
= false;
1163 ath9k_ps_wakeup(sc
);
1164 mutex_lock(&sc
->mutex
);
1166 if (changed
& IEEE80211_CONF_CHANGE_IDLE
) {
1167 sc
->ps_idle
= !!(conf
->flags
& IEEE80211_CONF_IDLE
);
1169 ath_cancel_work(sc
);
1170 ath9k_stop_btcoex(sc
);
1172 ath9k_start_btcoex(sc
);
1174 * The chip needs a reset to properly wake up from
1177 reset_channel
= ah
->chip_fullsleep
;
1182 * We just prepare to enable PS. We have to wait until our AP has
1183 * ACK'd our null data frame to disable RX otherwise we'll ignore
1184 * those ACKs and end up retransmitting the same null data frames.
1185 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1187 if (changed
& IEEE80211_CONF_CHANGE_PS
) {
1188 unsigned long flags
;
1189 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
1190 if (conf
->flags
& IEEE80211_CONF_PS
)
1191 ath9k_enable_ps(sc
);
1193 ath9k_disable_ps(sc
);
1194 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
1197 if (changed
& IEEE80211_CONF_CHANGE_MONITOR
) {
1198 if (conf
->flags
& IEEE80211_CONF_MONITOR
) {
1199 ath_dbg(common
, CONFIG
, "Monitor mode is enabled\n");
1200 sc
->sc_ah
->is_monitoring
= true;
1202 ath_dbg(common
, CONFIG
, "Monitor mode is disabled\n");
1203 sc
->sc_ah
->is_monitoring
= false;
1207 if ((changed
& IEEE80211_CONF_CHANGE_CHANNEL
) || reset_channel
) {
1208 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
1209 int pos
= curchan
->hw_value
;
1211 unsigned long flags
;
1214 old_pos
= ah
->curchan
- &ah
->channels
[0];
1216 ath_dbg(common
, CONFIG
, "Set channel: %d MHz type: %d\n",
1217 curchan
->center_freq
, conf
->channel_type
);
1219 /* update survey stats for the old channel before switching */
1220 spin_lock_irqsave(&common
->cc_lock
, flags
);
1221 ath_update_survey_stats(sc
);
1222 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1225 * Preserve the current channel values, before updating
1228 if (ah
->curchan
&& (old_pos
== pos
))
1229 ath9k_hw_getnf(ah
, ah
->curchan
);
1231 ath9k_cmn_update_ichannel(&sc
->sc_ah
->channels
[pos
],
1232 curchan
, conf
->channel_type
);
1235 * If the operating channel changes, change the survey in-use flags
1237 * Reset the survey data for the new channel, unless we're switching
1238 * back to the operating channel from an off-channel operation.
1240 if (!(hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
) &&
1241 sc
->cur_survey
!= &sc
->survey
[pos
]) {
1244 sc
->cur_survey
->filled
&= ~SURVEY_INFO_IN_USE
;
1246 sc
->cur_survey
= &sc
->survey
[pos
];
1248 memset(sc
->cur_survey
, 0, sizeof(struct survey_info
));
1249 sc
->cur_survey
->filled
|= SURVEY_INFO_IN_USE
;
1250 } else if (!(sc
->survey
[pos
].filled
& SURVEY_INFO_IN_USE
)) {
1251 memset(&sc
->survey
[pos
], 0, sizeof(struct survey_info
));
1254 if (ath_set_channel(sc
, hw
, &sc
->sc_ah
->channels
[pos
]) < 0) {
1255 ath_err(common
, "Unable to set channel\n");
1256 mutex_unlock(&sc
->mutex
);
1257 ath9k_ps_restore(sc
);
1262 * The most recent snapshot of channel->noisefloor for the old
1263 * channel is only available after the hardware reset. Copy it to
1264 * the survey stats now.
1267 ath_update_survey_nf(sc
, old_pos
);
1269 /* perform spectral scan if requested. */
1270 if (sc
->scanning
&& sc
->spectral_mode
== SPECTRAL_CHANSCAN
)
1271 ath9k_spectral_scan_trigger(hw
);
1275 if (changed
& IEEE80211_CONF_CHANGE_POWER
) {
1276 ath_dbg(common
, CONFIG
, "Set power: %d\n", conf
->power_level
);
1277 sc
->config
.txpowlimit
= 2 * conf
->power_level
;
1278 ath9k_cmn_update_txpow(ah
, sc
->curtxpow
,
1279 sc
->config
.txpowlimit
, &sc
->curtxpow
);
1282 mutex_unlock(&sc
->mutex
);
1283 ath9k_ps_restore(sc
);
1288 #define SUPPORTED_FILTERS \
1289 (FIF_PROMISC_IN_BSS | \
1294 FIF_BCN_PRBRESP_PROMISC | \
1298 /* FIXME: sc->sc_full_reset ? */
1299 static void ath9k_configure_filter(struct ieee80211_hw
*hw
,
1300 unsigned int changed_flags
,
1301 unsigned int *total_flags
,
1304 struct ath_softc
*sc
= hw
->priv
;
1307 changed_flags
&= SUPPORTED_FILTERS
;
1308 *total_flags
&= SUPPORTED_FILTERS
;
1310 sc
->rx
.rxfilter
= *total_flags
;
1311 ath9k_ps_wakeup(sc
);
1312 rfilt
= ath_calcrxfilter(sc
);
1313 ath9k_hw_setrxfilter(sc
->sc_ah
, rfilt
);
1314 ath9k_ps_restore(sc
);
1316 ath_dbg(ath9k_hw_common(sc
->sc_ah
), CONFIG
, "Set HW RX filter: 0x%x\n",
1320 static int ath9k_sta_add(struct ieee80211_hw
*hw
,
1321 struct ieee80211_vif
*vif
,
1322 struct ieee80211_sta
*sta
)
1324 struct ath_softc
*sc
= hw
->priv
;
1325 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1326 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1327 struct ieee80211_key_conf ps_key
= { };
1329 ath_node_attach(sc
, sta
, vif
);
1331 if (vif
->type
!= NL80211_IFTYPE_AP
&&
1332 vif
->type
!= NL80211_IFTYPE_AP_VLAN
)
1335 an
->ps_key
= ath_key_config(common
, vif
, sta
, &ps_key
);
1340 static void ath9k_del_ps_key(struct ath_softc
*sc
,
1341 struct ieee80211_vif
*vif
,
1342 struct ieee80211_sta
*sta
)
1344 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1345 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1346 struct ieee80211_key_conf ps_key
= { .hw_key_idx
= an
->ps_key
};
1351 ath_key_delete(common
, &ps_key
);
1354 static int ath9k_sta_remove(struct ieee80211_hw
*hw
,
1355 struct ieee80211_vif
*vif
,
1356 struct ieee80211_sta
*sta
)
1358 struct ath_softc
*sc
= hw
->priv
;
1360 ath9k_del_ps_key(sc
, vif
, sta
);
1361 ath_node_detach(sc
, sta
);
1366 static void ath9k_sta_notify(struct ieee80211_hw
*hw
,
1367 struct ieee80211_vif
*vif
,
1368 enum sta_notify_cmd cmd
,
1369 struct ieee80211_sta
*sta
)
1371 struct ath_softc
*sc
= hw
->priv
;
1372 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1374 if (!sta
->ht_cap
.ht_supported
)
1378 case STA_NOTIFY_SLEEP
:
1379 an
->sleeping
= true;
1380 ath_tx_aggr_sleep(sta
, sc
, an
);
1382 case STA_NOTIFY_AWAKE
:
1383 an
->sleeping
= false;
1384 ath_tx_aggr_wakeup(sc
, an
);
1389 static int ath9k_conf_tx(struct ieee80211_hw
*hw
,
1390 struct ieee80211_vif
*vif
, u16 queue
,
1391 const struct ieee80211_tx_queue_params
*params
)
1393 struct ath_softc
*sc
= hw
->priv
;
1394 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1395 struct ath_txq
*txq
;
1396 struct ath9k_tx_queue_info qi
;
1399 if (queue
>= IEEE80211_NUM_ACS
)
1402 txq
= sc
->tx
.txq_map
[queue
];
1404 ath9k_ps_wakeup(sc
);
1405 mutex_lock(&sc
->mutex
);
1407 memset(&qi
, 0, sizeof(struct ath9k_tx_queue_info
));
1409 qi
.tqi_aifs
= params
->aifs
;
1410 qi
.tqi_cwmin
= params
->cw_min
;
1411 qi
.tqi_cwmax
= params
->cw_max
;
1412 qi
.tqi_burstTime
= params
->txop
* 32;
1414 ath_dbg(common
, CONFIG
,
1415 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1416 queue
, txq
->axq_qnum
, params
->aifs
, params
->cw_min
,
1417 params
->cw_max
, params
->txop
);
1419 ath_update_max_aggr_framelen(sc
, queue
, qi
.tqi_burstTime
);
1420 ret
= ath_txq_update(sc
, txq
->axq_qnum
, &qi
);
1422 ath_err(common
, "TXQ Update failed\n");
1424 mutex_unlock(&sc
->mutex
);
1425 ath9k_ps_restore(sc
);
1430 static int ath9k_set_key(struct ieee80211_hw
*hw
,
1431 enum set_key_cmd cmd
,
1432 struct ieee80211_vif
*vif
,
1433 struct ieee80211_sta
*sta
,
1434 struct ieee80211_key_conf
*key
)
1436 struct ath_softc
*sc
= hw
->priv
;
1437 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1440 if (ath9k_modparam_nohwcrypt
)
1443 if ((vif
->type
== NL80211_IFTYPE_ADHOC
||
1444 vif
->type
== NL80211_IFTYPE_MESH_POINT
) &&
1445 (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
||
1446 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
) &&
1447 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
1449 * For now, disable hw crypto for the RSN IBSS group keys. This
1450 * could be optimized in the future to use a modified key cache
1451 * design to support per-STA RX GTK, but until that gets
1452 * implemented, use of software crypto for group addressed
1453 * frames is a acceptable to allow RSN IBSS to be used.
1458 mutex_lock(&sc
->mutex
);
1459 ath9k_ps_wakeup(sc
);
1460 ath_dbg(common
, CONFIG
, "Set HW Key\n");
1465 ath9k_del_ps_key(sc
, vif
, sta
);
1467 ret
= ath_key_config(common
, vif
, sta
, key
);
1469 key
->hw_key_idx
= ret
;
1470 /* push IV and Michael MIC generation to stack */
1471 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
1472 if (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
)
1473 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
1474 if (sc
->sc_ah
->sw_mgmt_crypto
&&
1475 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
)
1476 key
->flags
|= IEEE80211_KEY_FLAG_SW_MGMT_TX
;
1481 ath_key_delete(common
, key
);
1487 ath9k_ps_restore(sc
);
1488 mutex_unlock(&sc
->mutex
);
1493 static void ath9k_set_assoc_state(struct ath_softc
*sc
,
1494 struct ieee80211_vif
*vif
)
1496 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1497 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1498 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1499 unsigned long flags
;
1501 set_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
);
1502 avp
->primary_sta_vif
= true;
1505 * Set the AID, BSSID and do beacon-sync only when
1506 * the HW opmode is STATION.
1508 * But the primary bit is set above in any case.
1510 if (sc
->sc_ah
->opmode
!= NL80211_IFTYPE_STATION
)
1513 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
1514 common
->curaid
= bss_conf
->aid
;
1515 ath9k_hw_write_associd(sc
->sc_ah
);
1517 sc
->last_rssi
= ATH_RSSI_DUMMY_MARKER
;
1518 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
1520 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
1521 sc
->ps_flags
|= PS_BEACON_SYNC
| PS_WAIT_FOR_BEACON
;
1522 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
1524 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
))
1525 ath9k_mci_update_wlan_channels(sc
, false);
1527 ath_dbg(common
, CONFIG
,
1528 "Primary Station interface: %pM, BSSID: %pM\n",
1529 vif
->addr
, common
->curbssid
);
1532 static void ath9k_bss_assoc_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
1534 struct ath_softc
*sc
= data
;
1535 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1537 if (test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
))
1540 if (bss_conf
->assoc
)
1541 ath9k_set_assoc_state(sc
, vif
);
1544 static void ath9k_bss_info_changed(struct ieee80211_hw
*hw
,
1545 struct ieee80211_vif
*vif
,
1546 struct ieee80211_bss_conf
*bss_conf
,
1550 (BSS_CHANGED_ASSOC | \
1551 BSS_CHANGED_IBSS | \
1552 BSS_CHANGED_BEACON_ENABLED)
1554 struct ath_softc
*sc
= hw
->priv
;
1555 struct ath_hw
*ah
= sc
->sc_ah
;
1556 struct ath_common
*common
= ath9k_hw_common(ah
);
1557 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1560 ath9k_ps_wakeup(sc
);
1561 mutex_lock(&sc
->mutex
);
1563 if (changed
& BSS_CHANGED_ASSOC
) {
1564 ath_dbg(common
, CONFIG
, "BSSID %pM Changed ASSOC %d\n",
1565 bss_conf
->bssid
, bss_conf
->assoc
);
1567 if (avp
->primary_sta_vif
&& !bss_conf
->assoc
) {
1568 clear_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
);
1569 avp
->primary_sta_vif
= false;
1571 if (ah
->opmode
== NL80211_IFTYPE_STATION
)
1572 clear_bit(SC_OP_BEACONS
, &sc
->sc_flags
);
1575 ieee80211_iterate_active_interfaces_atomic(
1576 sc
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
1577 ath9k_bss_assoc_iter
, sc
);
1579 if (!test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
) &&
1580 ah
->opmode
== NL80211_IFTYPE_STATION
) {
1581 memset(common
->curbssid
, 0, ETH_ALEN
);
1583 ath9k_hw_write_associd(sc
->sc_ah
);
1584 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
))
1585 ath9k_mci_update_wlan_channels(sc
, true);
1589 if (changed
& BSS_CHANGED_IBSS
) {
1590 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
1591 common
->curaid
= bss_conf
->aid
;
1592 ath9k_hw_write_associd(sc
->sc_ah
);
1595 if ((changed
& BSS_CHANGED_BEACON_ENABLED
) ||
1596 (changed
& BSS_CHANGED_BEACON_INT
)) {
1597 if (ah
->opmode
== NL80211_IFTYPE_AP
&&
1598 bss_conf
->enable_beacon
)
1599 ath9k_set_tsfadjust(sc
, vif
);
1600 if (ath9k_allow_beacon_config(sc
, vif
))
1601 ath9k_beacon_config(sc
, vif
, changed
);
1604 if (changed
& BSS_CHANGED_ERP_SLOT
) {
1605 if (bss_conf
->use_short_slot
)
1609 if (vif
->type
== NL80211_IFTYPE_AP
) {
1611 * Defer update, so that connected stations can adjust
1612 * their settings at the same time.
1613 * See beacon.c for more details
1615 sc
->beacon
.slottime
= slottime
;
1616 sc
->beacon
.updateslot
= UPDATE
;
1618 ah
->slottime
= slottime
;
1619 ath9k_hw_init_global_settings(ah
);
1623 if (changed
& CHECK_ANI
)
1626 mutex_unlock(&sc
->mutex
);
1627 ath9k_ps_restore(sc
);
1632 static u64
ath9k_get_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
1634 struct ath_softc
*sc
= hw
->priv
;
1637 mutex_lock(&sc
->mutex
);
1638 ath9k_ps_wakeup(sc
);
1639 tsf
= ath9k_hw_gettsf64(sc
->sc_ah
);
1640 ath9k_ps_restore(sc
);
1641 mutex_unlock(&sc
->mutex
);
1646 static void ath9k_set_tsf(struct ieee80211_hw
*hw
,
1647 struct ieee80211_vif
*vif
,
1650 struct ath_softc
*sc
= hw
->priv
;
1652 mutex_lock(&sc
->mutex
);
1653 ath9k_ps_wakeup(sc
);
1654 ath9k_hw_settsf64(sc
->sc_ah
, tsf
);
1655 ath9k_ps_restore(sc
);
1656 mutex_unlock(&sc
->mutex
);
1659 static void ath9k_reset_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
1661 struct ath_softc
*sc
= hw
->priv
;
1663 mutex_lock(&sc
->mutex
);
1665 ath9k_ps_wakeup(sc
);
1666 ath9k_hw_reset_tsf(sc
->sc_ah
);
1667 ath9k_ps_restore(sc
);
1669 mutex_unlock(&sc
->mutex
);
1672 static int ath9k_ampdu_action(struct ieee80211_hw
*hw
,
1673 struct ieee80211_vif
*vif
,
1674 enum ieee80211_ampdu_mlme_action action
,
1675 struct ieee80211_sta
*sta
,
1676 u16 tid
, u16
*ssn
, u8 buf_size
)
1678 struct ath_softc
*sc
= hw
->priv
;
1684 case IEEE80211_AMPDU_RX_START
:
1686 case IEEE80211_AMPDU_RX_STOP
:
1688 case IEEE80211_AMPDU_TX_START
:
1689 ath9k_ps_wakeup(sc
);
1690 ret
= ath_tx_aggr_start(sc
, sta
, tid
, ssn
);
1692 ieee80211_start_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1693 ath9k_ps_restore(sc
);
1695 case IEEE80211_AMPDU_TX_STOP_CONT
:
1696 case IEEE80211_AMPDU_TX_STOP_FLUSH
:
1697 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT
:
1698 ath9k_ps_wakeup(sc
);
1699 ath_tx_aggr_stop(sc
, sta
, tid
);
1700 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1701 ath9k_ps_restore(sc
);
1703 case IEEE80211_AMPDU_TX_OPERATIONAL
:
1704 ath9k_ps_wakeup(sc
);
1705 ath_tx_aggr_resume(sc
, sta
, tid
);
1706 ath9k_ps_restore(sc
);
1709 ath_err(ath9k_hw_common(sc
->sc_ah
), "Unknown AMPDU action\n");
1717 static int ath9k_get_survey(struct ieee80211_hw
*hw
, int idx
,
1718 struct survey_info
*survey
)
1720 struct ath_softc
*sc
= hw
->priv
;
1721 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1722 struct ieee80211_supported_band
*sband
;
1723 struct ieee80211_channel
*chan
;
1724 unsigned long flags
;
1727 spin_lock_irqsave(&common
->cc_lock
, flags
);
1729 ath_update_survey_stats(sc
);
1731 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
];
1732 if (sband
&& idx
>= sband
->n_channels
) {
1733 idx
-= sband
->n_channels
;
1738 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
];
1740 if (!sband
|| idx
>= sband
->n_channels
) {
1741 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1745 chan
= &sband
->channels
[idx
];
1746 pos
= chan
->hw_value
;
1747 memcpy(survey
, &sc
->survey
[pos
], sizeof(*survey
));
1748 survey
->channel
= chan
;
1749 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1754 static void ath9k_set_coverage_class(struct ieee80211_hw
*hw
, u8 coverage_class
)
1756 struct ath_softc
*sc
= hw
->priv
;
1757 struct ath_hw
*ah
= sc
->sc_ah
;
1759 mutex_lock(&sc
->mutex
);
1760 ah
->coverage_class
= coverage_class
;
1762 ath9k_ps_wakeup(sc
);
1763 ath9k_hw_init_global_settings(ah
);
1764 ath9k_ps_restore(sc
);
1766 mutex_unlock(&sc
->mutex
);
1769 static void ath9k_flush(struct ieee80211_hw
*hw
, bool drop
)
1771 struct ath_softc
*sc
= hw
->priv
;
1772 struct ath_hw
*ah
= sc
->sc_ah
;
1773 struct ath_common
*common
= ath9k_hw_common(ah
);
1774 int timeout
= 200; /* ms */
1778 mutex_lock(&sc
->mutex
);
1779 cancel_delayed_work_sync(&sc
->tx_complete_work
);
1781 if (ah
->ah_flags
& AH_UNPLUGGED
) {
1782 ath_dbg(common
, ANY
, "Device has been unplugged!\n");
1783 mutex_unlock(&sc
->mutex
);
1787 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
)) {
1788 ath_dbg(common
, ANY
, "Device not present\n");
1789 mutex_unlock(&sc
->mutex
);
1793 for (j
= 0; j
< timeout
; j
++) {
1797 usleep_range(1000, 2000);
1799 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
1800 if (!ATH_TXQ_SETUP(sc
, i
))
1803 npend
= ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]);
1814 ath9k_ps_wakeup(sc
);
1815 spin_lock_bh(&sc
->sc_pcu_lock
);
1816 drain_txq
= ath_drain_all_txq(sc
);
1817 spin_unlock_bh(&sc
->sc_pcu_lock
);
1822 ath9k_ps_restore(sc
);
1823 ieee80211_wake_queues(hw
);
1826 ieee80211_queue_delayed_work(hw
, &sc
->tx_complete_work
, 0);
1827 mutex_unlock(&sc
->mutex
);
1830 static bool ath9k_tx_frames_pending(struct ieee80211_hw
*hw
)
1832 struct ath_softc
*sc
= hw
->priv
;
1835 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
1836 if (!ATH_TXQ_SETUP(sc
, i
))
1839 if (ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]))
1845 static int ath9k_tx_last_beacon(struct ieee80211_hw
*hw
)
1847 struct ath_softc
*sc
= hw
->priv
;
1848 struct ath_hw
*ah
= sc
->sc_ah
;
1849 struct ieee80211_vif
*vif
;
1850 struct ath_vif
*avp
;
1852 struct ath_tx_status ts
;
1853 bool edma
= !!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
);
1856 vif
= sc
->beacon
.bslot
[0];
1860 if (!vif
->bss_conf
.enable_beacon
)
1863 avp
= (void *)vif
->drv_priv
;
1865 if (!sc
->beacon
.tx_processed
&& !edma
) {
1866 tasklet_disable(&sc
->bcon_tasklet
);
1869 if (!bf
|| !bf
->bf_mpdu
)
1872 status
= ath9k_hw_txprocdesc(ah
, bf
->bf_desc
, &ts
);
1873 if (status
== -EINPROGRESS
)
1876 sc
->beacon
.tx_processed
= true;
1877 sc
->beacon
.tx_last
= !(ts
.ts_status
& ATH9K_TXERR_MASK
);
1880 tasklet_enable(&sc
->bcon_tasklet
);
1883 return sc
->beacon
.tx_last
;
1886 static int ath9k_get_stats(struct ieee80211_hw
*hw
,
1887 struct ieee80211_low_level_stats
*stats
)
1889 struct ath_softc
*sc
= hw
->priv
;
1890 struct ath_hw
*ah
= sc
->sc_ah
;
1891 struct ath9k_mib_stats
*mib_stats
= &ah
->ah_mibStats
;
1893 stats
->dot11ACKFailureCount
= mib_stats
->ackrcv_bad
;
1894 stats
->dot11RTSFailureCount
= mib_stats
->rts_bad
;
1895 stats
->dot11FCSErrorCount
= mib_stats
->fcs_bad
;
1896 stats
->dot11RTSSuccessCount
= mib_stats
->rts_good
;
1900 static u32
fill_chainmask(u32 cap
, u32
new)
1905 for (i
= 0; cap
&& new; i
++, cap
>>= 1) {
1906 if (!(cap
& BIT(0)))
1918 static bool validate_antenna_mask(struct ath_hw
*ah
, u32 val
)
1920 switch (val
& 0x7) {
1926 return (ah
->caps
.rx_chainmask
== 1);
1932 static int ath9k_set_antenna(struct ieee80211_hw
*hw
, u32 tx_ant
, u32 rx_ant
)
1934 struct ath_softc
*sc
= hw
->priv
;
1935 struct ath_hw
*ah
= sc
->sc_ah
;
1937 if (ah
->caps
.rx_chainmask
!= 1)
1940 if (!validate_antenna_mask(ah
, rx_ant
) || !tx_ant
)
1943 sc
->ant_rx
= rx_ant
;
1944 sc
->ant_tx
= tx_ant
;
1946 if (ah
->caps
.rx_chainmask
== 1)
1949 /* AR9100 runs into calibration issues if not all rx chains are enabled */
1950 if (AR_SREV_9100(ah
))
1951 ah
->rxchainmask
= 0x7;
1953 ah
->rxchainmask
= fill_chainmask(ah
->caps
.rx_chainmask
, rx_ant
);
1955 ah
->txchainmask
= fill_chainmask(ah
->caps
.tx_chainmask
, tx_ant
);
1956 ath9k_reload_chainmask_settings(sc
);
1961 static int ath9k_get_antenna(struct ieee80211_hw
*hw
, u32
*tx_ant
, u32
*rx_ant
)
1963 struct ath_softc
*sc
= hw
->priv
;
1965 *tx_ant
= sc
->ant_tx
;
1966 *rx_ant
= sc
->ant_rx
;
1970 #ifdef CONFIG_PM_SLEEP
1972 static void ath9k_wow_map_triggers(struct ath_softc
*sc
,
1973 struct cfg80211_wowlan
*wowlan
,
1976 if (wowlan
->disconnect
)
1977 *wow_triggers
|= AH_WOW_LINK_CHANGE
|
1979 if (wowlan
->magic_pkt
)
1980 *wow_triggers
|= AH_WOW_MAGIC_PATTERN_EN
;
1982 if (wowlan
->n_patterns
)
1983 *wow_triggers
|= AH_WOW_USER_PATTERN_EN
;
1985 sc
->wow_enabled
= *wow_triggers
;
1989 static void ath9k_wow_add_disassoc_deauth_pattern(struct ath_softc
*sc
)
1991 struct ath_hw
*ah
= sc
->sc_ah
;
1992 struct ath_common
*common
= ath9k_hw_common(ah
);
1993 struct ath9k_hw_capabilities
*pcaps
= &ah
->caps
;
1994 int pattern_count
= 0;
1996 u8 dis_deauth_pattern
[MAX_PATTERN_SIZE
];
1997 u8 dis_deauth_mask
[MAX_PATTERN_SIZE
];
1999 memset(dis_deauth_pattern
, 0, MAX_PATTERN_SIZE
);
2000 memset(dis_deauth_mask
, 0, MAX_PATTERN_SIZE
);
2003 * Create Dissassociate / Deauthenticate packet filter
2005 * 2 bytes 2 byte 6 bytes 6 bytes 6 bytes
2006 * +--------------+----------+---------+--------+--------+----
2007 * + Frame Control+ Duration + DA + SA + BSSID +
2008 * +--------------+----------+---------+--------+--------+----
2010 * The above is the management frame format for disassociate/
2011 * deauthenticate pattern, from this we need to match the first byte
2012 * of 'Frame Control' and DA, SA, and BSSID fields
2013 * (skipping 2nd byte of FC and Duration feild.
2015 * Disassociate pattern
2016 * --------------------
2017 * Frame control = 00 00 1010
2018 * DA, SA, BSSID = x:x:x:x:x:x
2019 * Pattern will be A0000000 | x:x:x:x:x:x | x:x:x:x:x:x
2020 * | x:x:x:x:x:x -- 22 bytes
2022 * Deauthenticate pattern
2023 * ----------------------
2024 * Frame control = 00 00 1100
2025 * DA, SA, BSSID = x:x:x:x:x:x
2026 * Pattern will be C0000000 | x:x:x:x:x:x | x:x:x:x:x:x
2027 * | x:x:x:x:x:x -- 22 bytes
2030 /* Create Disassociate Pattern first */
2034 /* Fill out the mask with all FF's */
2036 for (i
= 0; i
< MAX_PATTERN_MASK_SIZE
; i
++)
2037 dis_deauth_mask
[i
] = 0xff;
2039 /* copy the first byte of frame control field */
2040 dis_deauth_pattern
[byte_cnt
] = 0xa0;
2043 /* skip 2nd byte of frame control and Duration field */
2047 * need not match the destination mac address, it can be a broadcast
2048 * mac address or an unicast to this station
2052 /* copy the source mac address */
2053 memcpy((dis_deauth_pattern
+ byte_cnt
), common
->curbssid
, ETH_ALEN
);
2057 /* copy the bssid, its same as the source mac address */
2059 memcpy((dis_deauth_pattern
+ byte_cnt
), common
->curbssid
, ETH_ALEN
);
2061 /* Create Disassociate pattern mask */
2063 if (pcaps
->hw_caps
& ATH9K_HW_WOW_PATTERN_MATCH_EXACT
) {
2065 if (pcaps
->hw_caps
& ATH9K_HW_WOW_PATTERN_MATCH_DWORD
) {
2067 * for AR9280, because of hardware limitation, the
2068 * first 4 bytes have to be matched for all patterns.
2069 * the mask for disassociation and de-auth pattern
2070 * matching need to enable the first 4 bytes.
2071 * also the duration field needs to be filled.
2073 dis_deauth_mask
[0] = 0xf0;
2076 * fill in duration field
2077 FIXME: what is the exact value ?
2079 dis_deauth_pattern
[2] = 0xff;
2080 dis_deauth_pattern
[3] = 0xff;
2082 dis_deauth_mask
[0] = 0xfe;
2085 dis_deauth_mask
[1] = 0x03;
2086 dis_deauth_mask
[2] = 0xc0;
2088 dis_deauth_mask
[0] = 0xef;
2089 dis_deauth_mask
[1] = 0x3f;
2090 dis_deauth_mask
[2] = 0x00;
2091 dis_deauth_mask
[3] = 0xfc;
2094 ath_dbg(common
, WOW
, "Adding disassoc/deauth patterns for WoW\n");
2096 ath9k_hw_wow_apply_pattern(ah
, dis_deauth_pattern
, dis_deauth_mask
,
2097 pattern_count
, byte_cnt
);
2101 * for de-authenticate pattern, only the first byte of the frame
2102 * control field gets changed from 0xA0 to 0xC0
2104 dis_deauth_pattern
[0] = 0xC0;
2106 ath9k_hw_wow_apply_pattern(ah
, dis_deauth_pattern
, dis_deauth_mask
,
2107 pattern_count
, byte_cnt
);
2111 static void ath9k_wow_add_pattern(struct ath_softc
*sc
,
2112 struct cfg80211_wowlan
*wowlan
)
2114 struct ath_hw
*ah
= sc
->sc_ah
;
2115 struct ath9k_wow_pattern
*wow_pattern
= NULL
;
2116 struct cfg80211_wowlan_trig_pkt_pattern
*patterns
= wowlan
->patterns
;
2120 if (!wowlan
->n_patterns
)
2124 * Add the new user configured patterns
2126 for (i
= 0; i
< wowlan
->n_patterns
; i
++) {
2128 wow_pattern
= kzalloc(sizeof(*wow_pattern
), GFP_KERNEL
);
2134 * TODO: convert the generic user space pattern to
2135 * appropriate chip specific/802.11 pattern.
2138 mask_len
= DIV_ROUND_UP(wowlan
->patterns
[i
].pattern_len
, 8);
2139 memset(wow_pattern
->pattern_bytes
, 0, MAX_PATTERN_SIZE
);
2140 memset(wow_pattern
->mask_bytes
, 0, MAX_PATTERN_SIZE
);
2141 memcpy(wow_pattern
->pattern_bytes
, patterns
[i
].pattern
,
2142 patterns
[i
].pattern_len
);
2143 memcpy(wow_pattern
->mask_bytes
, patterns
[i
].mask
, mask_len
);
2144 wow_pattern
->pattern_len
= patterns
[i
].pattern_len
;
2147 * just need to take care of deauth and disssoc pattern,
2148 * make sure we don't overwrite them.
2151 ath9k_hw_wow_apply_pattern(ah
, wow_pattern
->pattern_bytes
,
2152 wow_pattern
->mask_bytes
,
2154 wow_pattern
->pattern_len
);
2161 static int ath9k_suspend(struct ieee80211_hw
*hw
,
2162 struct cfg80211_wowlan
*wowlan
)
2164 struct ath_softc
*sc
= hw
->priv
;
2165 struct ath_hw
*ah
= sc
->sc_ah
;
2166 struct ath_common
*common
= ath9k_hw_common(ah
);
2167 u32 wow_triggers_enabled
= 0;
2170 mutex_lock(&sc
->mutex
);
2172 ath_cancel_work(sc
);
2174 del_timer_sync(&sc
->rx_poll_timer
);
2176 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
)) {
2177 ath_dbg(common
, ANY
, "Device not present\n");
2182 if (WARN_ON(!wowlan
)) {
2183 ath_dbg(common
, WOW
, "None of the WoW triggers enabled\n");
2188 if (!device_can_wakeup(sc
->dev
)) {
2189 ath_dbg(common
, WOW
, "device_can_wakeup failed, WoW is not enabled\n");
2195 * none of the sta vifs are associated
2196 * and we are not currently handling multivif
2197 * cases, for instance we have to seperately
2198 * configure 'keep alive frame' for each
2202 if (!test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
)) {
2203 ath_dbg(common
, WOW
, "None of the STA vifs are associated\n");
2208 if (sc
->nvifs
> 1) {
2209 ath_dbg(common
, WOW
, "WoW for multivif is not yet supported\n");
2214 ath9k_wow_map_triggers(sc
, wowlan
, &wow_triggers_enabled
);
2216 ath_dbg(common
, WOW
, "WoW triggers enabled 0x%x\n",
2217 wow_triggers_enabled
);
2219 ath9k_ps_wakeup(sc
);
2221 ath9k_stop_btcoex(sc
);
2224 * Enable wake up on recieving disassoc/deauth
2227 ath9k_wow_add_disassoc_deauth_pattern(sc
);
2229 if (wow_triggers_enabled
& AH_WOW_USER_PATTERN_EN
)
2230 ath9k_wow_add_pattern(sc
, wowlan
);
2232 spin_lock_bh(&sc
->sc_pcu_lock
);
2234 * To avoid false wake, we enable beacon miss interrupt only
2235 * when we go to sleep. We save the current interrupt mask
2236 * so we can restore it after the system wakes up
2238 sc
->wow_intr_before_sleep
= ah
->imask
;
2239 ah
->imask
&= ~ATH9K_INT_GLOBAL
;
2240 ath9k_hw_disable_interrupts(ah
);
2241 ah
->imask
= ATH9K_INT_BMISS
| ATH9K_INT_GLOBAL
;
2242 ath9k_hw_set_interrupts(ah
);
2243 ath9k_hw_enable_interrupts(ah
);
2245 spin_unlock_bh(&sc
->sc_pcu_lock
);
2248 * we can now sync irq and kill any running tasklets, since we already
2249 * disabled interrupts and not holding a spin lock
2251 synchronize_irq(sc
->irq
);
2252 tasklet_kill(&sc
->intr_tq
);
2254 ath9k_hw_wow_enable(ah
, wow_triggers_enabled
);
2256 ath9k_ps_restore(sc
);
2257 ath_dbg(common
, ANY
, "WoW enabled in ath9k\n");
2258 atomic_inc(&sc
->wow_sleep_proc_intr
);
2261 mutex_unlock(&sc
->mutex
);
2265 static int ath9k_resume(struct ieee80211_hw
*hw
)
2267 struct ath_softc
*sc
= hw
->priv
;
2268 struct ath_hw
*ah
= sc
->sc_ah
;
2269 struct ath_common
*common
= ath9k_hw_common(ah
);
2272 mutex_lock(&sc
->mutex
);
2274 ath9k_ps_wakeup(sc
);
2276 spin_lock_bh(&sc
->sc_pcu_lock
);
2278 ath9k_hw_disable_interrupts(ah
);
2279 ah
->imask
= sc
->wow_intr_before_sleep
;
2280 ath9k_hw_set_interrupts(ah
);
2281 ath9k_hw_enable_interrupts(ah
);
2283 spin_unlock_bh(&sc
->sc_pcu_lock
);
2285 wow_status
= ath9k_hw_wow_wakeup(ah
);
2287 if (atomic_read(&sc
->wow_got_bmiss_intr
) == 0) {
2289 * some devices may not pick beacon miss
2290 * as the reason they woke up so we add
2291 * that here for that shortcoming.
2293 wow_status
|= AH_WOW_BEACON_MISS
;
2294 atomic_dec(&sc
->wow_got_bmiss_intr
);
2295 ath_dbg(common
, ANY
, "Beacon miss interrupt picked up during WoW sleep\n");
2298 atomic_dec(&sc
->wow_sleep_proc_intr
);
2301 ath_dbg(common
, ANY
, "Waking up due to WoW triggers %s with WoW status = %x\n",
2302 ath9k_hw_wow_event_to_string(wow_status
), wow_status
);
2305 ath_restart_work(sc
);
2306 ath9k_start_btcoex(sc
);
2308 ath9k_ps_restore(sc
);
2309 mutex_unlock(&sc
->mutex
);
2314 static void ath9k_set_wakeup(struct ieee80211_hw
*hw
, bool enabled
)
2316 struct ath_softc
*sc
= hw
->priv
;
2318 mutex_lock(&sc
->mutex
);
2319 device_init_wakeup(sc
->dev
, 1);
2320 device_set_wakeup_enable(sc
->dev
, enabled
);
2321 mutex_unlock(&sc
->mutex
);
2325 static void ath9k_sw_scan_start(struct ieee80211_hw
*hw
)
2327 struct ath_softc
*sc
= hw
->priv
;
2332 static void ath9k_sw_scan_complete(struct ieee80211_hw
*hw
)
2334 struct ath_softc
*sc
= hw
->priv
;
2339 struct ieee80211_ops ath9k_ops
= {
2341 .start
= ath9k_start
,
2343 .add_interface
= ath9k_add_interface
,
2344 .change_interface
= ath9k_change_interface
,
2345 .remove_interface
= ath9k_remove_interface
,
2346 .config
= ath9k_config
,
2347 .configure_filter
= ath9k_configure_filter
,
2348 .sta_add
= ath9k_sta_add
,
2349 .sta_remove
= ath9k_sta_remove
,
2350 .sta_notify
= ath9k_sta_notify
,
2351 .conf_tx
= ath9k_conf_tx
,
2352 .bss_info_changed
= ath9k_bss_info_changed
,
2353 .set_key
= ath9k_set_key
,
2354 .get_tsf
= ath9k_get_tsf
,
2355 .set_tsf
= ath9k_set_tsf
,
2356 .reset_tsf
= ath9k_reset_tsf
,
2357 .ampdu_action
= ath9k_ampdu_action
,
2358 .get_survey
= ath9k_get_survey
,
2359 .rfkill_poll
= ath9k_rfkill_poll_state
,
2360 .set_coverage_class
= ath9k_set_coverage_class
,
2361 .flush
= ath9k_flush
,
2362 .tx_frames_pending
= ath9k_tx_frames_pending
,
2363 .tx_last_beacon
= ath9k_tx_last_beacon
,
2364 .get_stats
= ath9k_get_stats
,
2365 .set_antenna
= ath9k_set_antenna
,
2366 .get_antenna
= ath9k_get_antenna
,
2368 #ifdef CONFIG_PM_SLEEP
2369 .suspend
= ath9k_suspend
,
2370 .resume
= ath9k_resume
,
2371 .set_wakeup
= ath9k_set_wakeup
,
2374 #ifdef CONFIG_ATH9K_DEBUGFS
2375 .get_et_sset_count
= ath9k_get_et_sset_count
,
2376 .get_et_stats
= ath9k_get_et_stats
,
2377 .get_et_strings
= ath9k_get_et_strings
,
2380 #if defined(CONFIG_MAC80211_DEBUGFS) && defined(CONFIG_ATH9K_DEBUGFS)
2381 .sta_add_debugfs
= ath9k_sta_add_debugfs
,
2382 .sta_remove_debugfs
= ath9k_sta_remove_debugfs
,
2384 .sw_scan_start
= ath9k_sw_scan_start
,
2385 .sw_scan_complete
= ath9k_sw_scan_complete
,