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
|
134 PS_WAIT_FOR_TX_ACK
))) {
135 mode
= ATH9K_PM_NETWORK_SLEEP
;
136 if (ath9k_hw_btcoex_is_enabled(sc
->sc_ah
))
137 ath9k_btcoex_stop_gen_timer(sc
);
142 spin_lock(&common
->cc_lock
);
143 ath_hw_cycle_counters_update(common
);
144 spin_unlock(&common
->cc_lock
);
146 ath9k_hw_setpower(sc
->sc_ah
, mode
);
149 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
152 static void __ath_cancel_work(struct ath_softc
*sc
)
154 cancel_work_sync(&sc
->paprd_work
);
155 cancel_work_sync(&sc
->hw_check_work
);
156 cancel_delayed_work_sync(&sc
->tx_complete_work
);
157 cancel_delayed_work_sync(&sc
->hw_pll_work
);
159 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
160 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
))
161 cancel_work_sync(&sc
->mci_work
);
165 static void ath_cancel_work(struct ath_softc
*sc
)
167 __ath_cancel_work(sc
);
168 cancel_work_sync(&sc
->hw_reset_work
);
171 static void ath_restart_work(struct ath_softc
*sc
)
173 ieee80211_queue_delayed_work(sc
->hw
, &sc
->tx_complete_work
, 0);
175 if (AR_SREV_9340(sc
->sc_ah
) || AR_SREV_9485(sc
->sc_ah
) ||
176 AR_SREV_9550(sc
->sc_ah
))
177 ieee80211_queue_delayed_work(sc
->hw
, &sc
->hw_pll_work
,
178 msecs_to_jiffies(ATH_PLL_WORK_INTERVAL
));
180 ath_start_rx_poll(sc
, 3);
184 static bool ath_prepare_reset(struct ath_softc
*sc
, bool retry_tx
, bool flush
)
186 struct ath_hw
*ah
= sc
->sc_ah
;
189 ieee80211_stop_queues(sc
->hw
);
191 sc
->hw_busy_count
= 0;
193 del_timer_sync(&sc
->rx_poll_timer
);
195 ath9k_debug_samp_bb_mac(sc
);
196 ath9k_hw_disable_interrupts(ah
);
198 if (!ath_stoprecv(sc
))
201 if (!ath_drain_all_txq(sc
, retry_tx
))
205 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
206 ath_rx_tasklet(sc
, 1, true);
207 ath_rx_tasklet(sc
, 1, false);
215 static bool ath_complete_reset(struct ath_softc
*sc
, bool start
)
217 struct ath_hw
*ah
= sc
->sc_ah
;
218 struct ath_common
*common
= ath9k_hw_common(ah
);
221 if (ath_startrecv(sc
) != 0) {
222 ath_err(common
, "Unable to restart recv logic\n");
226 ath9k_cmn_update_txpow(ah
, sc
->curtxpow
,
227 sc
->config
.txpowlimit
, &sc
->curtxpow
);
229 clear_bit(SC_OP_HW_RESET
, &sc
->sc_flags
);
230 ath9k_hw_set_interrupts(ah
);
231 ath9k_hw_enable_interrupts(ah
);
233 if (!(sc
->hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
) && start
) {
234 if (!test_bit(SC_OP_BEACONS
, &sc
->sc_flags
))
237 ath9k_set_beacon(sc
);
239 if (ah
->opmode
== NL80211_IFTYPE_STATION
&&
240 test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
)) {
241 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
242 sc
->ps_flags
|= PS_BEACON_SYNC
| PS_WAIT_FOR_BEACON
;
243 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
246 ath_restart_work(sc
);
249 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_ANT_DIV_COMB
) && sc
->ant_rx
!= 3)
250 ath_ant_comb_update(sc
);
252 ieee80211_wake_queues(sc
->hw
);
257 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
, retry_tx
, 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 (!ath_complete_reset(sc
, true))
299 spin_unlock_bh(&sc
->sc_pcu_lock
);
305 * Set/change channels. If the channel is really being changed, it's done
306 * by reseting the chip. To accomplish this we must first cleanup any pending
307 * DMA, then restart stuff.
309 static int ath_set_channel(struct ath_softc
*sc
, struct ieee80211_hw
*hw
,
310 struct ath9k_channel
*hchan
)
314 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
))
317 r
= ath_reset_internal(sc
, hchan
, false);
322 static void ath_node_attach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
,
323 struct ieee80211_vif
*vif
)
327 an
= (struct ath_node
*)sta
->drv_priv
;
329 #ifdef CONFIG_ATH9K_DEBUGFS
330 spin_lock(&sc
->nodes_lock
);
331 list_add(&an
->list
, &sc
->nodes
);
332 spin_unlock(&sc
->nodes_lock
);
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 #ifdef CONFIG_ATH9K_DEBUGFS
351 spin_lock(&sc
->nodes_lock
);
353 spin_unlock(&sc
->nodes_lock
);
357 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
358 ath_tx_node_cleanup(sc
, an
);
361 void ath9k_tasklet(unsigned long data
)
363 struct ath_softc
*sc
= (struct ath_softc
*)data
;
364 struct ath_hw
*ah
= sc
->sc_ah
;
365 struct ath_common
*common
= ath9k_hw_common(ah
);
366 enum ath_reset_type type
;
368 u32 status
= sc
->intrstatus
;
372 spin_lock(&sc
->sc_pcu_lock
);
374 if ((status
& ATH9K_INT_FATAL
) ||
375 (status
& ATH9K_INT_BB_WATCHDOG
)) {
377 if (status
& ATH9K_INT_FATAL
)
378 type
= RESET_TYPE_FATAL_INT
;
380 type
= RESET_TYPE_BB_WATCHDOG
;
382 ath9k_queue_reset(sc
, type
);
386 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
387 if ((status
& ATH9K_INT_TSFOOR
) && sc
->ps_enabled
) {
389 * TSF sync does not look correct; remain awake to sync with
392 ath_dbg(common
, PS
, "TSFOOR - Sync with next Beacon\n");
393 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
| PS_BEACON_SYNC
;
395 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
397 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
398 rxmask
= (ATH9K_INT_RXHP
| ATH9K_INT_RXLP
| ATH9K_INT_RXEOL
|
401 rxmask
= (ATH9K_INT_RX
| ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
403 if (status
& rxmask
) {
404 /* Check for high priority Rx first */
405 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
406 (status
& ATH9K_INT_RXHP
))
407 ath_rx_tasklet(sc
, 0, true);
409 ath_rx_tasklet(sc
, 0, false);
412 if (status
& ATH9K_INT_TX
) {
413 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
414 ath_tx_edma_tasklet(sc
);
419 ath9k_btcoex_handle_interrupt(sc
, status
);
422 /* re-enable hardware interrupt */
423 ath9k_hw_enable_interrupts(ah
);
425 spin_unlock(&sc
->sc_pcu_lock
);
426 ath9k_ps_restore(sc
);
429 irqreturn_t
ath_isr(int irq
, void *dev
)
431 #define SCHED_INTR ( \
433 ATH9K_INT_BB_WATCHDOG | \
443 ATH9K_INT_GENTIMER | \
446 struct ath_softc
*sc
= dev
;
447 struct ath_hw
*ah
= sc
->sc_ah
;
448 struct ath_common
*common
= ath9k_hw_common(ah
);
449 enum ath9k_int status
;
453 * The hardware is not ready/present, don't
454 * touch anything. Note this can happen early
455 * on if the IRQ is shared.
457 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
))
460 /* shared irq, not for us */
462 if (!ath9k_hw_intrpend(ah
))
465 if (test_bit(SC_OP_HW_RESET
, &sc
->sc_flags
)) {
466 ath9k_hw_kill_interrupts(ah
);
471 * Figure out the reason(s) for the interrupt. Note
472 * that the hal returns a pseudo-ISR that may include
473 * bits we haven't explicitly enabled so we mask the
474 * value to insure we only process bits we requested.
476 ath9k_hw_getisr(ah
, &status
); /* NB: clears ISR too */
477 status
&= ah
->imask
; /* discard unasked-for bits */
480 * If there are no status bits set, then this interrupt was not
481 * for me (should have been caught above).
486 /* Cache the status */
487 sc
->intrstatus
= status
;
489 if (status
& SCHED_INTR
)
492 #ifdef CONFIG_PM_SLEEP
493 if (status
& ATH9K_INT_BMISS
) {
494 if (atomic_read(&sc
->wow_sleep_proc_intr
) == 0) {
495 ath_dbg(common
, ANY
, "during WoW we got a BMISS\n");
496 atomic_inc(&sc
->wow_got_bmiss_intr
);
497 atomic_dec(&sc
->wow_sleep_proc_intr
);
499 ath_dbg(common
, INTERRUPT
, "beacon miss interrupt\n");
504 * If a FATAL or RXORN interrupt is received, we have to reset the
507 if ((status
& ATH9K_INT_FATAL
) || ((status
& ATH9K_INT_RXORN
) &&
508 !(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)))
511 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
512 (status
& ATH9K_INT_BB_WATCHDOG
)) {
514 spin_lock(&common
->cc_lock
);
515 ath_hw_cycle_counters_update(common
);
516 ar9003_hw_bb_watchdog_dbg_info(ah
);
517 spin_unlock(&common
->cc_lock
);
522 if (status
& ATH9K_INT_SWBA
)
523 tasklet_schedule(&sc
->bcon_tasklet
);
525 if (status
& ATH9K_INT_TXURN
)
526 ath9k_hw_updatetxtriglevel(ah
, true);
528 if (status
& ATH9K_INT_RXEOL
) {
529 ah
->imask
&= ~(ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
530 ath9k_hw_set_interrupts(ah
);
533 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
534 if (status
& ATH9K_INT_TIM_TIMER
) {
535 if (ATH_DBG_WARN_ON_ONCE(sc
->ps_idle
))
537 /* Clear RxAbort bit so that we can
539 ath9k_setpower(sc
, ATH9K_PM_AWAKE
);
540 spin_lock(&sc
->sc_pm_lock
);
541 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
542 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
;
543 spin_unlock(&sc
->sc_pm_lock
);
548 ath_debug_stat_interrupt(sc
, status
);
551 /* turn off every interrupt */
552 ath9k_hw_disable_interrupts(ah
);
553 tasklet_schedule(&sc
->intr_tq
);
561 static int ath_reset(struct ath_softc
*sc
, bool retry_tx
)
567 r
= ath_reset_internal(sc
, NULL
, retry_tx
);
571 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
572 if (ATH_TXQ_SETUP(sc
, i
)) {
573 spin_lock_bh(&sc
->tx
.txq
[i
].axq_lock
);
574 ath_txq_schedule(sc
, &sc
->tx
.txq
[i
]);
575 spin_unlock_bh(&sc
->tx
.txq
[i
].axq_lock
);
580 ath9k_ps_restore(sc
);
585 void ath9k_queue_reset(struct ath_softc
*sc
, enum ath_reset_type type
)
587 #ifdef CONFIG_ATH9K_DEBUGFS
588 RESET_STAT_INC(sc
, type
);
590 set_bit(SC_OP_HW_RESET
, &sc
->sc_flags
);
591 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
594 void ath_reset_work(struct work_struct
*work
)
596 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, hw_reset_work
);
601 /**********************/
602 /* mac80211 callbacks */
603 /**********************/
605 static int ath9k_start(struct ieee80211_hw
*hw
)
607 struct ath_softc
*sc
= hw
->priv
;
608 struct ath_hw
*ah
= sc
->sc_ah
;
609 struct ath_common
*common
= ath9k_hw_common(ah
);
610 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
611 struct ath9k_channel
*init_channel
;
614 ath_dbg(common
, CONFIG
,
615 "Starting driver with initial channel: %d MHz\n",
616 curchan
->center_freq
);
619 mutex_lock(&sc
->mutex
);
621 init_channel
= ath9k_cmn_get_curchannel(hw
, ah
);
623 /* Reset SERDES registers */
624 ath9k_hw_configpcipowersave(ah
, false);
627 * The basic interface to setting the hardware in a good
628 * state is ``reset''. On return the hardware is known to
629 * be powered up and with interrupts disabled. This must
630 * be followed by initialization of the appropriate bits
631 * and then setup of the interrupt mask.
633 spin_lock_bh(&sc
->sc_pcu_lock
);
635 atomic_set(&ah
->intr_ref_cnt
, -1);
637 r
= ath9k_hw_reset(ah
, init_channel
, ah
->caldata
, false);
640 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
641 r
, curchan
->center_freq
);
642 ah
->reset_power_on
= false;
645 /* Setup our intr mask. */
646 ah
->imask
= ATH9K_INT_TX
| ATH9K_INT_RXEOL
|
647 ATH9K_INT_RXORN
| ATH9K_INT_FATAL
|
650 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
651 ah
->imask
|= ATH9K_INT_RXHP
|
653 ATH9K_INT_BB_WATCHDOG
;
655 ah
->imask
|= ATH9K_INT_RX
;
657 ah
->imask
|= ATH9K_INT_GTT
;
659 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
660 ah
->imask
|= ATH9K_INT_CST
;
664 clear_bit(SC_OP_INVALID
, &sc
->sc_flags
);
665 sc
->sc_ah
->is_monitoring
= false;
667 if (!ath_complete_reset(sc
, false))
668 ah
->reset_power_on
= false;
670 if (ah
->led_pin
>= 0) {
671 ath9k_hw_cfg_output(ah
, ah
->led_pin
,
672 AR_GPIO_OUTPUT_MUX_AS_OUTPUT
);
673 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 0);
677 * Reset key cache to sane defaults (all entries cleared) instead of
678 * semi-random values after suspend/resume.
680 ath9k_cmn_init_crypto(sc
->sc_ah
);
682 spin_unlock_bh(&sc
->sc_pcu_lock
);
684 if (ah
->caps
.pcie_lcr_extsync_en
&& common
->bus_ops
->extn_synch_en
)
685 common
->bus_ops
->extn_synch_en(common
);
687 mutex_unlock(&sc
->mutex
);
689 ath9k_ps_restore(sc
);
694 static void ath9k_tx(struct ieee80211_hw
*hw
,
695 struct ieee80211_tx_control
*control
,
698 struct ath_softc
*sc
= hw
->priv
;
699 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
700 struct ath_tx_control txctl
;
701 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
704 if (sc
->ps_enabled
) {
706 * mac80211 does not set PM field for normal data frames, so we
707 * need to update that based on the current PS mode.
709 if (ieee80211_is_data(hdr
->frame_control
) &&
710 !ieee80211_is_nullfunc(hdr
->frame_control
) &&
711 !ieee80211_has_pm(hdr
->frame_control
)) {
713 "Add PM=1 for a TX frame while in PS mode\n");
714 hdr
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
718 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_NETWORK_SLEEP
)) {
720 * We are using PS-Poll and mac80211 can request TX while in
721 * power save mode. Need to wake up hardware for the TX to be
722 * completed and if needed, also for RX of buffered frames.
725 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
726 if (!(sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
727 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
728 if (ieee80211_is_pspoll(hdr
->frame_control
)) {
730 "Sending PS-Poll to pick a buffered frame\n");
731 sc
->ps_flags
|= PS_WAIT_FOR_PSPOLL_DATA
;
733 ath_dbg(common
, PS
, "Wake up to complete TX\n");
734 sc
->ps_flags
|= PS_WAIT_FOR_TX_ACK
;
737 * The actual restore operation will happen only after
738 * the ps_flags bit is cleared. We are just dropping
739 * the ps_usecount here.
741 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
742 ath9k_ps_restore(sc
);
746 * Cannot tx while the hardware is in full sleep, it first needs a full
747 * chip reset to recover from that
749 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_FULL_SLEEP
)) {
750 ath_err(common
, "TX while HW is in FULL_SLEEP mode\n");
754 memset(&txctl
, 0, sizeof(struct ath_tx_control
));
755 txctl
.txq
= sc
->tx
.txq_map
[skb_get_queue_mapping(skb
)];
756 txctl
.sta
= control
->sta
;
758 ath_dbg(common
, XMIT
, "transmitting packet, skb: %p\n", skb
);
760 if (ath_tx_start(hw
, skb
, &txctl
) != 0) {
761 ath_dbg(common
, XMIT
, "TX failed\n");
762 TX_STAT_INC(txctl
.txq
->axq_qnum
, txfailed
);
768 ieee80211_free_txskb(hw
, skb
);
771 static void ath9k_stop(struct ieee80211_hw
*hw
)
773 struct ath_softc
*sc
= hw
->priv
;
774 struct ath_hw
*ah
= sc
->sc_ah
;
775 struct ath_common
*common
= ath9k_hw_common(ah
);
778 mutex_lock(&sc
->mutex
);
781 del_timer_sync(&sc
->rx_poll_timer
);
783 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
)) {
784 ath_dbg(common
, ANY
, "Device not present\n");
785 mutex_unlock(&sc
->mutex
);
789 /* Ensure HW is awake when we try to shut it down. */
792 spin_lock_bh(&sc
->sc_pcu_lock
);
794 /* prevent tasklets to enable interrupts once we disable them */
795 ah
->imask
&= ~ATH9K_INT_GLOBAL
;
797 /* make sure h/w will not generate any interrupt
798 * before setting the invalid flag. */
799 ath9k_hw_disable_interrupts(ah
);
801 spin_unlock_bh(&sc
->sc_pcu_lock
);
803 /* we can now sync irq and kill any running tasklets, since we already
804 * disabled interrupts and not holding a spin lock */
805 synchronize_irq(sc
->irq
);
806 tasklet_kill(&sc
->intr_tq
);
807 tasklet_kill(&sc
->bcon_tasklet
);
809 prev_idle
= sc
->ps_idle
;
812 spin_lock_bh(&sc
->sc_pcu_lock
);
814 if (ah
->led_pin
>= 0) {
815 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 1);
816 ath9k_hw_cfg_gpio_input(ah
, ah
->led_pin
);
819 ath_prepare_reset(sc
, false, true);
822 dev_kfree_skb_any(sc
->rx
.frag
);
827 ah
->curchan
= ath9k_cmn_get_curchannel(hw
, ah
);
829 ath9k_hw_reset(ah
, ah
->curchan
, ah
->caldata
, false);
830 ath9k_hw_phy_disable(ah
);
832 ath9k_hw_configpcipowersave(ah
, true);
834 spin_unlock_bh(&sc
->sc_pcu_lock
);
836 ath9k_ps_restore(sc
);
838 set_bit(SC_OP_INVALID
, &sc
->sc_flags
);
839 sc
->ps_idle
= prev_idle
;
841 mutex_unlock(&sc
->mutex
);
843 ath_dbg(common
, CONFIG
, "Driver halt\n");
846 bool ath9k_uses_beacons(int type
)
849 case NL80211_IFTYPE_AP
:
850 case NL80211_IFTYPE_ADHOC
:
851 case NL80211_IFTYPE_MESH_POINT
:
858 static void ath9k_vif_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
860 struct ath9k_vif_iter_data
*iter_data
= data
;
863 if (iter_data
->hw_macaddr
)
864 for (i
= 0; i
< ETH_ALEN
; i
++)
865 iter_data
->mask
[i
] &=
866 ~(iter_data
->hw_macaddr
[i
] ^ mac
[i
]);
869 case NL80211_IFTYPE_AP
:
872 case NL80211_IFTYPE_STATION
:
873 iter_data
->nstations
++;
875 case NL80211_IFTYPE_ADHOC
:
876 iter_data
->nadhocs
++;
878 case NL80211_IFTYPE_MESH_POINT
:
879 iter_data
->nmeshes
++;
881 case NL80211_IFTYPE_WDS
:
889 static void ath9k_sta_vif_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
891 struct ath_softc
*sc
= data
;
892 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
894 if (vif
->type
!= NL80211_IFTYPE_STATION
)
897 if (avp
->primary_sta_vif
)
898 ath9k_set_assoc_state(sc
, vif
);
901 /* Called with sc->mutex held. */
902 void ath9k_calculate_iter_data(struct ieee80211_hw
*hw
,
903 struct ieee80211_vif
*vif
,
904 struct ath9k_vif_iter_data
*iter_data
)
906 struct ath_softc
*sc
= hw
->priv
;
907 struct ath_hw
*ah
= sc
->sc_ah
;
908 struct ath_common
*common
= ath9k_hw_common(ah
);
911 * Use the hardware MAC address as reference, the hardware uses it
912 * together with the BSSID mask when matching addresses.
914 memset(iter_data
, 0, sizeof(*iter_data
));
915 iter_data
->hw_macaddr
= common
->macaddr
;
916 memset(&iter_data
->mask
, 0xff, ETH_ALEN
);
919 ath9k_vif_iter(iter_data
, vif
->addr
, vif
);
921 /* Get list of all active MAC addresses */
922 ieee80211_iterate_active_interfaces_atomic(sc
->hw
, ath9k_vif_iter
,
926 /* Called with sc->mutex held. */
927 static void ath9k_calculate_summary_state(struct ieee80211_hw
*hw
,
928 struct ieee80211_vif
*vif
)
930 struct ath_softc
*sc
= hw
->priv
;
931 struct ath_hw
*ah
= sc
->sc_ah
;
932 struct ath_common
*common
= ath9k_hw_common(ah
);
933 struct ath9k_vif_iter_data iter_data
;
934 enum nl80211_iftype old_opmode
= ah
->opmode
;
936 ath9k_calculate_iter_data(hw
, vif
, &iter_data
);
938 memcpy(common
->bssidmask
, iter_data
.mask
, ETH_ALEN
);
939 ath_hw_setbssidmask(common
);
941 if (iter_data
.naps
> 0) {
942 ath9k_hw_set_tsfadjust(ah
, true);
943 ah
->opmode
= NL80211_IFTYPE_AP
;
945 ath9k_hw_set_tsfadjust(ah
, false);
947 if (iter_data
.nmeshes
)
948 ah
->opmode
= NL80211_IFTYPE_MESH_POINT
;
949 else if (iter_data
.nwds
)
950 ah
->opmode
= NL80211_IFTYPE_AP
;
951 else if (iter_data
.nadhocs
)
952 ah
->opmode
= NL80211_IFTYPE_ADHOC
;
954 ah
->opmode
= NL80211_IFTYPE_STATION
;
957 ath9k_hw_setopmode(ah
);
959 if ((iter_data
.nstations
+ iter_data
.nadhocs
+ iter_data
.nmeshes
) > 0)
960 ah
->imask
|= ATH9K_INT_TSFOOR
;
962 ah
->imask
&= ~ATH9K_INT_TSFOOR
;
964 ath9k_hw_set_interrupts(ah
);
967 * If we are changing the opmode to STATION,
968 * a beacon sync needs to be done.
970 if (ah
->opmode
== NL80211_IFTYPE_STATION
&&
971 old_opmode
== NL80211_IFTYPE_AP
&&
972 test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
)) {
973 ieee80211_iterate_active_interfaces_atomic(sc
->hw
,
974 ath9k_sta_vif_iter
, sc
);
978 static int ath9k_add_interface(struct ieee80211_hw
*hw
,
979 struct ieee80211_vif
*vif
)
981 struct ath_softc
*sc
= hw
->priv
;
982 struct ath_hw
*ah
= sc
->sc_ah
;
983 struct ath_common
*common
= ath9k_hw_common(ah
);
985 mutex_lock(&sc
->mutex
);
987 ath_dbg(common
, CONFIG
, "Attach a VIF of type: %d\n", vif
->type
);
991 ath9k_calculate_summary_state(hw
, vif
);
992 ath9k_ps_restore(sc
);
994 if (ath9k_uses_beacons(vif
->type
))
995 ath9k_beacon_assign_slot(sc
, vif
);
997 mutex_unlock(&sc
->mutex
);
1001 static int ath9k_change_interface(struct ieee80211_hw
*hw
,
1002 struct ieee80211_vif
*vif
,
1003 enum nl80211_iftype new_type
,
1006 struct ath_softc
*sc
= hw
->priv
;
1007 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1009 ath_dbg(common
, CONFIG
, "Change Interface\n");
1010 mutex_lock(&sc
->mutex
);
1012 if (ath9k_uses_beacons(vif
->type
))
1013 ath9k_beacon_remove_slot(sc
, vif
);
1015 vif
->type
= new_type
;
1018 ath9k_ps_wakeup(sc
);
1019 ath9k_calculate_summary_state(hw
, vif
);
1020 ath9k_ps_restore(sc
);
1022 if (ath9k_uses_beacons(vif
->type
))
1023 ath9k_beacon_assign_slot(sc
, vif
);
1025 mutex_unlock(&sc
->mutex
);
1029 static void ath9k_remove_interface(struct ieee80211_hw
*hw
,
1030 struct ieee80211_vif
*vif
)
1032 struct ath_softc
*sc
= hw
->priv
;
1033 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1035 ath_dbg(common
, CONFIG
, "Detach Interface\n");
1037 mutex_lock(&sc
->mutex
);
1041 if (ath9k_uses_beacons(vif
->type
))
1042 ath9k_beacon_remove_slot(sc
, vif
);
1044 ath9k_ps_wakeup(sc
);
1045 ath9k_calculate_summary_state(hw
, NULL
);
1046 ath9k_ps_restore(sc
);
1048 mutex_unlock(&sc
->mutex
);
1051 static void ath9k_enable_ps(struct ath_softc
*sc
)
1053 struct ath_hw
*ah
= sc
->sc_ah
;
1054 struct ath_common
*common
= ath9k_hw_common(ah
);
1056 sc
->ps_enabled
= true;
1057 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1058 if ((ah
->imask
& ATH9K_INT_TIM_TIMER
) == 0) {
1059 ah
->imask
|= ATH9K_INT_TIM_TIMER
;
1060 ath9k_hw_set_interrupts(ah
);
1062 ath9k_hw_setrxabort(ah
, 1);
1064 ath_dbg(common
, PS
, "PowerSave enabled\n");
1067 static void ath9k_disable_ps(struct ath_softc
*sc
)
1069 struct ath_hw
*ah
= sc
->sc_ah
;
1070 struct ath_common
*common
= ath9k_hw_common(ah
);
1072 sc
->ps_enabled
= false;
1073 ath9k_hw_setpower(ah
, ATH9K_PM_AWAKE
);
1074 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1075 ath9k_hw_setrxabort(ah
, 0);
1076 sc
->ps_flags
&= ~(PS_WAIT_FOR_BEACON
|
1078 PS_WAIT_FOR_PSPOLL_DATA
|
1079 PS_WAIT_FOR_TX_ACK
);
1080 if (ah
->imask
& ATH9K_INT_TIM_TIMER
) {
1081 ah
->imask
&= ~ATH9K_INT_TIM_TIMER
;
1082 ath9k_hw_set_interrupts(ah
);
1085 ath_dbg(common
, PS
, "PowerSave disabled\n");
1088 static int ath9k_config(struct ieee80211_hw
*hw
, u32 changed
)
1090 struct ath_softc
*sc
= hw
->priv
;
1091 struct ath_hw
*ah
= sc
->sc_ah
;
1092 struct ath_common
*common
= ath9k_hw_common(ah
);
1093 struct ieee80211_conf
*conf
= &hw
->conf
;
1094 bool reset_channel
= false;
1096 ath9k_ps_wakeup(sc
);
1097 mutex_lock(&sc
->mutex
);
1099 if (changed
& IEEE80211_CONF_CHANGE_IDLE
) {
1100 sc
->ps_idle
= !!(conf
->flags
& IEEE80211_CONF_IDLE
);
1102 ath_cancel_work(sc
);
1103 ath9k_stop_btcoex(sc
);
1105 ath9k_start_btcoex(sc
);
1107 * The chip needs a reset to properly wake up from
1110 reset_channel
= ah
->chip_fullsleep
;
1115 * We just prepare to enable PS. We have to wait until our AP has
1116 * ACK'd our null data frame to disable RX otherwise we'll ignore
1117 * those ACKs and end up retransmitting the same null data frames.
1118 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1120 if (changed
& IEEE80211_CONF_CHANGE_PS
) {
1121 unsigned long flags
;
1122 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
1123 if (conf
->flags
& IEEE80211_CONF_PS
)
1124 ath9k_enable_ps(sc
);
1126 ath9k_disable_ps(sc
);
1127 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
1130 if (changed
& IEEE80211_CONF_CHANGE_MONITOR
) {
1131 if (conf
->flags
& IEEE80211_CONF_MONITOR
) {
1132 ath_dbg(common
, CONFIG
, "Monitor mode is enabled\n");
1133 sc
->sc_ah
->is_monitoring
= true;
1135 ath_dbg(common
, CONFIG
, "Monitor mode is disabled\n");
1136 sc
->sc_ah
->is_monitoring
= false;
1140 if ((changed
& IEEE80211_CONF_CHANGE_CHANNEL
) || reset_channel
) {
1141 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
1142 int pos
= curchan
->hw_value
;
1144 unsigned long flags
;
1147 old_pos
= ah
->curchan
- &ah
->channels
[0];
1149 ath_dbg(common
, CONFIG
, "Set channel: %d MHz type: %d\n",
1150 curchan
->center_freq
, conf
->channel_type
);
1152 /* update survey stats for the old channel before switching */
1153 spin_lock_irqsave(&common
->cc_lock
, flags
);
1154 ath_update_survey_stats(sc
);
1155 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1158 * Preserve the current channel values, before updating
1161 if (ah
->curchan
&& (old_pos
== pos
))
1162 ath9k_hw_getnf(ah
, ah
->curchan
);
1164 ath9k_cmn_update_ichannel(&sc
->sc_ah
->channels
[pos
],
1165 curchan
, conf
->channel_type
);
1168 * If the operating channel changes, change the survey in-use flags
1170 * Reset the survey data for the new channel, unless we're switching
1171 * back to the operating channel from an off-channel operation.
1173 if (!(hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
) &&
1174 sc
->cur_survey
!= &sc
->survey
[pos
]) {
1177 sc
->cur_survey
->filled
&= ~SURVEY_INFO_IN_USE
;
1179 sc
->cur_survey
= &sc
->survey
[pos
];
1181 memset(sc
->cur_survey
, 0, sizeof(struct survey_info
));
1182 sc
->cur_survey
->filled
|= SURVEY_INFO_IN_USE
;
1183 } else if (!(sc
->survey
[pos
].filled
& SURVEY_INFO_IN_USE
)) {
1184 memset(&sc
->survey
[pos
], 0, sizeof(struct survey_info
));
1187 if (ath_set_channel(sc
, hw
, &sc
->sc_ah
->channels
[pos
]) < 0) {
1188 ath_err(common
, "Unable to set channel\n");
1189 mutex_unlock(&sc
->mutex
);
1190 ath9k_ps_restore(sc
);
1195 * The most recent snapshot of channel->noisefloor for the old
1196 * channel is only available after the hardware reset. Copy it to
1197 * the survey stats now.
1200 ath_update_survey_nf(sc
, old_pos
);
1203 if (changed
& IEEE80211_CONF_CHANGE_POWER
) {
1204 ath_dbg(common
, CONFIG
, "Set power: %d\n", conf
->power_level
);
1205 sc
->config
.txpowlimit
= 2 * conf
->power_level
;
1206 ath9k_cmn_update_txpow(ah
, sc
->curtxpow
,
1207 sc
->config
.txpowlimit
, &sc
->curtxpow
);
1210 mutex_unlock(&sc
->mutex
);
1211 ath9k_ps_restore(sc
);
1216 #define SUPPORTED_FILTERS \
1217 (FIF_PROMISC_IN_BSS | \
1222 FIF_BCN_PRBRESP_PROMISC | \
1226 /* FIXME: sc->sc_full_reset ? */
1227 static void ath9k_configure_filter(struct ieee80211_hw
*hw
,
1228 unsigned int changed_flags
,
1229 unsigned int *total_flags
,
1232 struct ath_softc
*sc
= hw
->priv
;
1235 changed_flags
&= SUPPORTED_FILTERS
;
1236 *total_flags
&= SUPPORTED_FILTERS
;
1238 sc
->rx
.rxfilter
= *total_flags
;
1239 ath9k_ps_wakeup(sc
);
1240 rfilt
= ath_calcrxfilter(sc
);
1241 ath9k_hw_setrxfilter(sc
->sc_ah
, rfilt
);
1242 ath9k_ps_restore(sc
);
1244 ath_dbg(ath9k_hw_common(sc
->sc_ah
), CONFIG
, "Set HW RX filter: 0x%x\n",
1248 static int ath9k_sta_add(struct ieee80211_hw
*hw
,
1249 struct ieee80211_vif
*vif
,
1250 struct ieee80211_sta
*sta
)
1252 struct ath_softc
*sc
= hw
->priv
;
1253 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1254 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1255 struct ieee80211_key_conf ps_key
= { };
1257 ath_node_attach(sc
, sta
, vif
);
1259 if (vif
->type
!= NL80211_IFTYPE_AP
&&
1260 vif
->type
!= NL80211_IFTYPE_AP_VLAN
)
1263 an
->ps_key
= ath_key_config(common
, vif
, sta
, &ps_key
);
1268 static void ath9k_del_ps_key(struct ath_softc
*sc
,
1269 struct ieee80211_vif
*vif
,
1270 struct ieee80211_sta
*sta
)
1272 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1273 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1274 struct ieee80211_key_conf ps_key
= { .hw_key_idx
= an
->ps_key
};
1279 ath_key_delete(common
, &ps_key
);
1282 static int ath9k_sta_remove(struct ieee80211_hw
*hw
,
1283 struct ieee80211_vif
*vif
,
1284 struct ieee80211_sta
*sta
)
1286 struct ath_softc
*sc
= hw
->priv
;
1288 ath9k_del_ps_key(sc
, vif
, sta
);
1289 ath_node_detach(sc
, sta
);
1294 static void ath9k_sta_notify(struct ieee80211_hw
*hw
,
1295 struct ieee80211_vif
*vif
,
1296 enum sta_notify_cmd cmd
,
1297 struct ieee80211_sta
*sta
)
1299 struct ath_softc
*sc
= hw
->priv
;
1300 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1302 if (!sta
->ht_cap
.ht_supported
)
1306 case STA_NOTIFY_SLEEP
:
1307 an
->sleeping
= true;
1308 ath_tx_aggr_sleep(sta
, sc
, an
);
1310 case STA_NOTIFY_AWAKE
:
1311 an
->sleeping
= false;
1312 ath_tx_aggr_wakeup(sc
, an
);
1317 static int ath9k_conf_tx(struct ieee80211_hw
*hw
,
1318 struct ieee80211_vif
*vif
, u16 queue
,
1319 const struct ieee80211_tx_queue_params
*params
)
1321 struct ath_softc
*sc
= hw
->priv
;
1322 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1323 struct ath_txq
*txq
;
1324 struct ath9k_tx_queue_info qi
;
1327 if (queue
>= WME_NUM_AC
)
1330 txq
= sc
->tx
.txq_map
[queue
];
1332 ath9k_ps_wakeup(sc
);
1333 mutex_lock(&sc
->mutex
);
1335 memset(&qi
, 0, sizeof(struct ath9k_tx_queue_info
));
1337 qi
.tqi_aifs
= params
->aifs
;
1338 qi
.tqi_cwmin
= params
->cw_min
;
1339 qi
.tqi_cwmax
= params
->cw_max
;
1340 qi
.tqi_burstTime
= params
->txop
* 32;
1342 ath_dbg(common
, CONFIG
,
1343 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1344 queue
, txq
->axq_qnum
, params
->aifs
, params
->cw_min
,
1345 params
->cw_max
, params
->txop
);
1347 ath_update_max_aggr_framelen(sc
, queue
, qi
.tqi_burstTime
);
1348 ret
= ath_txq_update(sc
, txq
->axq_qnum
, &qi
);
1350 ath_err(common
, "TXQ Update failed\n");
1352 mutex_unlock(&sc
->mutex
);
1353 ath9k_ps_restore(sc
);
1358 static int ath9k_set_key(struct ieee80211_hw
*hw
,
1359 enum set_key_cmd cmd
,
1360 struct ieee80211_vif
*vif
,
1361 struct ieee80211_sta
*sta
,
1362 struct ieee80211_key_conf
*key
)
1364 struct ath_softc
*sc
= hw
->priv
;
1365 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1368 if (ath9k_modparam_nohwcrypt
)
1371 if ((vif
->type
== NL80211_IFTYPE_ADHOC
||
1372 vif
->type
== NL80211_IFTYPE_MESH_POINT
) &&
1373 (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
||
1374 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
) &&
1375 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
1377 * For now, disable hw crypto for the RSN IBSS group keys. This
1378 * could be optimized in the future to use a modified key cache
1379 * design to support per-STA RX GTK, but until that gets
1380 * implemented, use of software crypto for group addressed
1381 * frames is a acceptable to allow RSN IBSS to be used.
1386 mutex_lock(&sc
->mutex
);
1387 ath9k_ps_wakeup(sc
);
1388 ath_dbg(common
, CONFIG
, "Set HW Key\n");
1393 ath9k_del_ps_key(sc
, vif
, sta
);
1395 ret
= ath_key_config(common
, vif
, sta
, key
);
1397 key
->hw_key_idx
= ret
;
1398 /* push IV and Michael MIC generation to stack */
1399 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
1400 if (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
)
1401 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
1402 if (sc
->sc_ah
->sw_mgmt_crypto
&&
1403 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
)
1404 key
->flags
|= IEEE80211_KEY_FLAG_SW_MGMT_TX
;
1409 ath_key_delete(common
, key
);
1415 ath9k_ps_restore(sc
);
1416 mutex_unlock(&sc
->mutex
);
1421 static void ath9k_set_assoc_state(struct ath_softc
*sc
,
1422 struct ieee80211_vif
*vif
)
1424 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1425 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1426 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1427 unsigned long flags
;
1429 set_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
);
1430 avp
->primary_sta_vif
= true;
1433 * Set the AID, BSSID and do beacon-sync only when
1434 * the HW opmode is STATION.
1436 * But the primary bit is set above in any case.
1438 if (sc
->sc_ah
->opmode
!= NL80211_IFTYPE_STATION
)
1441 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
1442 common
->curaid
= bss_conf
->aid
;
1443 ath9k_hw_write_associd(sc
->sc_ah
);
1445 sc
->last_rssi
= ATH_RSSI_DUMMY_MARKER
;
1446 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
1448 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
1449 sc
->ps_flags
|= PS_BEACON_SYNC
| PS_WAIT_FOR_BEACON
;
1450 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
1452 ath_dbg(common
, CONFIG
,
1453 "Primary Station interface: %pM, BSSID: %pM\n",
1454 vif
->addr
, common
->curbssid
);
1457 static void ath9k_bss_assoc_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
1459 struct ath_softc
*sc
= data
;
1460 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1462 if (test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
))
1465 if (bss_conf
->assoc
)
1466 ath9k_set_assoc_state(sc
, vif
);
1469 static void ath9k_bss_info_changed(struct ieee80211_hw
*hw
,
1470 struct ieee80211_vif
*vif
,
1471 struct ieee80211_bss_conf
*bss_conf
,
1475 (BSS_CHANGED_ASSOC | \
1476 BSS_CHANGED_IBSS | \
1477 BSS_CHANGED_BEACON_ENABLED)
1479 struct ath_softc
*sc
= hw
->priv
;
1480 struct ath_hw
*ah
= sc
->sc_ah
;
1481 struct ath_common
*common
= ath9k_hw_common(ah
);
1482 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1485 ath9k_ps_wakeup(sc
);
1486 mutex_lock(&sc
->mutex
);
1488 if (changed
& BSS_CHANGED_ASSOC
) {
1489 ath_dbg(common
, CONFIG
, "BSSID %pM Changed ASSOC %d\n",
1490 bss_conf
->bssid
, bss_conf
->assoc
);
1492 if (avp
->primary_sta_vif
&& !bss_conf
->assoc
) {
1493 clear_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
);
1494 avp
->primary_sta_vif
= false;
1496 if (ah
->opmode
== NL80211_IFTYPE_STATION
)
1497 clear_bit(SC_OP_BEACONS
, &sc
->sc_flags
);
1500 ieee80211_iterate_active_interfaces_atomic(sc
->hw
,
1501 ath9k_bss_assoc_iter
, sc
);
1503 if (!test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
) &&
1504 ah
->opmode
== NL80211_IFTYPE_STATION
) {
1505 memset(common
->curbssid
, 0, ETH_ALEN
);
1507 ath9k_hw_write_associd(sc
->sc_ah
);
1511 if (changed
& BSS_CHANGED_IBSS
) {
1512 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
1513 common
->curaid
= bss_conf
->aid
;
1514 ath9k_hw_write_associd(sc
->sc_ah
);
1517 if ((changed
& BSS_CHANGED_BEACON_ENABLED
) ||
1518 (changed
& BSS_CHANGED_BEACON_INT
)) {
1519 if (ah
->opmode
== NL80211_IFTYPE_AP
&&
1520 bss_conf
->enable_beacon
)
1521 ath9k_set_tsfadjust(sc
, vif
);
1522 if (ath9k_allow_beacon_config(sc
, vif
))
1523 ath9k_beacon_config(sc
, vif
, changed
);
1526 if (changed
& BSS_CHANGED_ERP_SLOT
) {
1527 if (bss_conf
->use_short_slot
)
1531 if (vif
->type
== NL80211_IFTYPE_AP
) {
1533 * Defer update, so that connected stations can adjust
1534 * their settings at the same time.
1535 * See beacon.c for more details
1537 sc
->beacon
.slottime
= slottime
;
1538 sc
->beacon
.updateslot
= UPDATE
;
1540 ah
->slottime
= slottime
;
1541 ath9k_hw_init_global_settings(ah
);
1545 if (changed
& CHECK_ANI
)
1548 mutex_unlock(&sc
->mutex
);
1549 ath9k_ps_restore(sc
);
1554 static u64
ath9k_get_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
1556 struct ath_softc
*sc
= hw
->priv
;
1559 mutex_lock(&sc
->mutex
);
1560 ath9k_ps_wakeup(sc
);
1561 tsf
= ath9k_hw_gettsf64(sc
->sc_ah
);
1562 ath9k_ps_restore(sc
);
1563 mutex_unlock(&sc
->mutex
);
1568 static void ath9k_set_tsf(struct ieee80211_hw
*hw
,
1569 struct ieee80211_vif
*vif
,
1572 struct ath_softc
*sc
= hw
->priv
;
1574 mutex_lock(&sc
->mutex
);
1575 ath9k_ps_wakeup(sc
);
1576 ath9k_hw_settsf64(sc
->sc_ah
, tsf
);
1577 ath9k_ps_restore(sc
);
1578 mutex_unlock(&sc
->mutex
);
1581 static void ath9k_reset_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
1583 struct ath_softc
*sc
= hw
->priv
;
1585 mutex_lock(&sc
->mutex
);
1587 ath9k_ps_wakeup(sc
);
1588 ath9k_hw_reset_tsf(sc
->sc_ah
);
1589 ath9k_ps_restore(sc
);
1591 mutex_unlock(&sc
->mutex
);
1594 static int ath9k_ampdu_action(struct ieee80211_hw
*hw
,
1595 struct ieee80211_vif
*vif
,
1596 enum ieee80211_ampdu_mlme_action action
,
1597 struct ieee80211_sta
*sta
,
1598 u16 tid
, u16
*ssn
, u8 buf_size
)
1600 struct ath_softc
*sc
= hw
->priv
;
1606 case IEEE80211_AMPDU_RX_START
:
1608 case IEEE80211_AMPDU_RX_STOP
:
1610 case IEEE80211_AMPDU_TX_START
:
1611 ath9k_ps_wakeup(sc
);
1612 ret
= ath_tx_aggr_start(sc
, sta
, tid
, ssn
);
1614 ieee80211_start_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1615 ath9k_ps_restore(sc
);
1617 case IEEE80211_AMPDU_TX_STOP
:
1618 ath9k_ps_wakeup(sc
);
1619 ath_tx_aggr_stop(sc
, sta
, tid
);
1620 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1621 ath9k_ps_restore(sc
);
1623 case IEEE80211_AMPDU_TX_OPERATIONAL
:
1624 ath9k_ps_wakeup(sc
);
1625 ath_tx_aggr_resume(sc
, sta
, tid
);
1626 ath9k_ps_restore(sc
);
1629 ath_err(ath9k_hw_common(sc
->sc_ah
), "Unknown AMPDU action\n");
1637 static int ath9k_get_survey(struct ieee80211_hw
*hw
, int idx
,
1638 struct survey_info
*survey
)
1640 struct ath_softc
*sc
= hw
->priv
;
1641 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1642 struct ieee80211_supported_band
*sband
;
1643 struct ieee80211_channel
*chan
;
1644 unsigned long flags
;
1647 spin_lock_irqsave(&common
->cc_lock
, flags
);
1649 ath_update_survey_stats(sc
);
1651 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
];
1652 if (sband
&& idx
>= sband
->n_channels
) {
1653 idx
-= sband
->n_channels
;
1658 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
];
1660 if (!sband
|| idx
>= sband
->n_channels
) {
1661 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1665 chan
= &sband
->channels
[idx
];
1666 pos
= chan
->hw_value
;
1667 memcpy(survey
, &sc
->survey
[pos
], sizeof(*survey
));
1668 survey
->channel
= chan
;
1669 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1674 static void ath9k_set_coverage_class(struct ieee80211_hw
*hw
, u8 coverage_class
)
1676 struct ath_softc
*sc
= hw
->priv
;
1677 struct ath_hw
*ah
= sc
->sc_ah
;
1679 mutex_lock(&sc
->mutex
);
1680 ah
->coverage_class
= coverage_class
;
1682 ath9k_ps_wakeup(sc
);
1683 ath9k_hw_init_global_settings(ah
);
1684 ath9k_ps_restore(sc
);
1686 mutex_unlock(&sc
->mutex
);
1689 static void ath9k_flush(struct ieee80211_hw
*hw
, bool drop
)
1691 struct ath_softc
*sc
= hw
->priv
;
1692 struct ath_hw
*ah
= sc
->sc_ah
;
1693 struct ath_common
*common
= ath9k_hw_common(ah
);
1694 int timeout
= 200; /* ms */
1698 mutex_lock(&sc
->mutex
);
1699 cancel_delayed_work_sync(&sc
->tx_complete_work
);
1701 if (ah
->ah_flags
& AH_UNPLUGGED
) {
1702 ath_dbg(common
, ANY
, "Device has been unplugged!\n");
1703 mutex_unlock(&sc
->mutex
);
1707 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
)) {
1708 ath_dbg(common
, ANY
, "Device not present\n");
1709 mutex_unlock(&sc
->mutex
);
1713 for (j
= 0; j
< timeout
; j
++) {
1717 usleep_range(1000, 2000);
1719 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
1720 if (!ATH_TXQ_SETUP(sc
, i
))
1723 npend
= ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]);
1734 ath9k_ps_wakeup(sc
);
1735 spin_lock_bh(&sc
->sc_pcu_lock
);
1736 drain_txq
= ath_drain_all_txq(sc
, false);
1737 spin_unlock_bh(&sc
->sc_pcu_lock
);
1740 ath_reset(sc
, false);
1742 ath9k_ps_restore(sc
);
1743 ieee80211_wake_queues(hw
);
1746 ieee80211_queue_delayed_work(hw
, &sc
->tx_complete_work
, 0);
1747 mutex_unlock(&sc
->mutex
);
1750 static bool ath9k_tx_frames_pending(struct ieee80211_hw
*hw
)
1752 struct ath_softc
*sc
= hw
->priv
;
1755 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
1756 if (!ATH_TXQ_SETUP(sc
, i
))
1759 if (ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]))
1765 static int ath9k_tx_last_beacon(struct ieee80211_hw
*hw
)
1767 struct ath_softc
*sc
= hw
->priv
;
1768 struct ath_hw
*ah
= sc
->sc_ah
;
1769 struct ieee80211_vif
*vif
;
1770 struct ath_vif
*avp
;
1772 struct ath_tx_status ts
;
1773 bool edma
= !!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
);
1776 vif
= sc
->beacon
.bslot
[0];
1780 if (!vif
->bss_conf
.enable_beacon
)
1783 avp
= (void *)vif
->drv_priv
;
1785 if (!sc
->beacon
.tx_processed
&& !edma
) {
1786 tasklet_disable(&sc
->bcon_tasklet
);
1789 if (!bf
|| !bf
->bf_mpdu
)
1792 status
= ath9k_hw_txprocdesc(ah
, bf
->bf_desc
, &ts
);
1793 if (status
== -EINPROGRESS
)
1796 sc
->beacon
.tx_processed
= true;
1797 sc
->beacon
.tx_last
= !(ts
.ts_status
& ATH9K_TXERR_MASK
);
1800 tasklet_enable(&sc
->bcon_tasklet
);
1803 return sc
->beacon
.tx_last
;
1806 static int ath9k_get_stats(struct ieee80211_hw
*hw
,
1807 struct ieee80211_low_level_stats
*stats
)
1809 struct ath_softc
*sc
= hw
->priv
;
1810 struct ath_hw
*ah
= sc
->sc_ah
;
1811 struct ath9k_mib_stats
*mib_stats
= &ah
->ah_mibStats
;
1813 stats
->dot11ACKFailureCount
= mib_stats
->ackrcv_bad
;
1814 stats
->dot11RTSFailureCount
= mib_stats
->rts_bad
;
1815 stats
->dot11FCSErrorCount
= mib_stats
->fcs_bad
;
1816 stats
->dot11RTSSuccessCount
= mib_stats
->rts_good
;
1820 static u32
fill_chainmask(u32 cap
, u32
new)
1825 for (i
= 0; cap
&& new; i
++, cap
>>= 1) {
1826 if (!(cap
& BIT(0)))
1838 static bool validate_antenna_mask(struct ath_hw
*ah
, u32 val
)
1840 switch (val
& 0x7) {
1846 return (ah
->caps
.rx_chainmask
== 1);
1852 static int ath9k_set_antenna(struct ieee80211_hw
*hw
, u32 tx_ant
, u32 rx_ant
)
1854 struct ath_softc
*sc
= hw
->priv
;
1855 struct ath_hw
*ah
= sc
->sc_ah
;
1857 if (ah
->caps
.rx_chainmask
!= 1)
1860 if (!validate_antenna_mask(ah
, rx_ant
) || !tx_ant
)
1863 sc
->ant_rx
= rx_ant
;
1864 sc
->ant_tx
= tx_ant
;
1866 if (ah
->caps
.rx_chainmask
== 1)
1869 /* AR9100 runs into calibration issues if not all rx chains are enabled */
1870 if (AR_SREV_9100(ah
))
1871 ah
->rxchainmask
= 0x7;
1873 ah
->rxchainmask
= fill_chainmask(ah
->caps
.rx_chainmask
, rx_ant
);
1875 ah
->txchainmask
= fill_chainmask(ah
->caps
.tx_chainmask
, tx_ant
);
1876 ath9k_reload_chainmask_settings(sc
);
1881 static int ath9k_get_antenna(struct ieee80211_hw
*hw
, u32
*tx_ant
, u32
*rx_ant
)
1883 struct ath_softc
*sc
= hw
->priv
;
1885 *tx_ant
= sc
->ant_tx
;
1886 *rx_ant
= sc
->ant_rx
;
1890 #ifdef CONFIG_ATH9K_DEBUGFS
1892 /* Ethtool support for get-stats */
1894 #define AMKSTR(nm) #nm "_BE", #nm "_BK", #nm "_VI", #nm "_VO"
1895 static const char ath9k_gstrings_stats
[][ETH_GSTRING_LEN
] = {
1902 AMKSTR(d_tx_mpdus_queued
),
1903 AMKSTR(d_tx_mpdus_completed
),
1904 AMKSTR(d_tx_mpdu_xretries
),
1905 AMKSTR(d_tx_aggregates
),
1906 AMKSTR(d_tx_ampdus_queued_hw
),
1907 AMKSTR(d_tx_ampdus_queued_sw
),
1908 AMKSTR(d_tx_ampdus_completed
),
1909 AMKSTR(d_tx_ampdu_retries
),
1910 AMKSTR(d_tx_ampdu_xretries
),
1911 AMKSTR(d_tx_fifo_underrun
),
1912 AMKSTR(d_tx_op_exceeded
),
1913 AMKSTR(d_tx_timer_expiry
),
1914 AMKSTR(d_tx_desc_cfg_err
),
1915 AMKSTR(d_tx_data_underrun
),
1916 AMKSTR(d_tx_delim_underrun
),
1918 "d_rx_decrypt_crc_err",
1921 "d_rx_pre_delim_crc_err",
1922 "d_rx_post_delim_crc_err",
1923 "d_rx_decrypt_busy_err",
1925 "d_rx_phyerr_radar",
1926 "d_rx_phyerr_ofdm_timing",
1927 "d_rx_phyerr_cck_timing",
1930 #define ATH9K_SSTATS_LEN ARRAY_SIZE(ath9k_gstrings_stats)
1932 static void ath9k_get_et_strings(struct ieee80211_hw
*hw
,
1933 struct ieee80211_vif
*vif
,
1936 if (sset
== ETH_SS_STATS
)
1937 memcpy(data
, *ath9k_gstrings_stats
,
1938 sizeof(ath9k_gstrings_stats
));
1941 static int ath9k_get_et_sset_count(struct ieee80211_hw
*hw
,
1942 struct ieee80211_vif
*vif
, int sset
)
1944 if (sset
== ETH_SS_STATS
)
1945 return ATH9K_SSTATS_LEN
;
1949 #define PR_QNUM(_n) (sc->tx.txq_map[_n]->axq_qnum)
1950 #define AWDATA(elem) \
1952 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_BE)].elem; \
1953 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_BK)].elem; \
1954 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_VI)].elem; \
1955 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_VO)].elem; \
1958 #define AWDATA_RX(elem) \
1960 data[i++] = sc->debug.stats.rxstats.elem; \
1963 static void ath9k_get_et_stats(struct ieee80211_hw
*hw
,
1964 struct ieee80211_vif
*vif
,
1965 struct ethtool_stats
*stats
, u64
*data
)
1967 struct ath_softc
*sc
= hw
->priv
;
1970 data
[i
++] = (sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_BE
)].tx_pkts_all
+
1971 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_BK
)].tx_pkts_all
+
1972 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_VI
)].tx_pkts_all
+
1973 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_VO
)].tx_pkts_all
);
1974 data
[i
++] = (sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_BE
)].tx_bytes_all
+
1975 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_BK
)].tx_bytes_all
+
1976 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_VI
)].tx_bytes_all
+
1977 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_VO
)].tx_bytes_all
);
1978 AWDATA_RX(rx_pkts_all
);
1979 AWDATA_RX(rx_bytes_all
);
1981 AWDATA(tx_pkts_all
);
1982 AWDATA(tx_bytes_all
);
1987 AWDATA(a_queued_hw
);
1988 AWDATA(a_queued_sw
);
1989 AWDATA(a_completed
);
1992 AWDATA(fifo_underrun
);
1995 AWDATA(desc_cfg_err
);
1996 AWDATA(data_underrun
);
1997 AWDATA(delim_underrun
);
1999 AWDATA_RX(decrypt_crc_err
);
2002 AWDATA_RX(pre_delim_crc_err
);
2003 AWDATA_RX(post_delim_crc_err
);
2004 AWDATA_RX(decrypt_busy_err
);
2006 AWDATA_RX(phy_err_stats
[ATH9K_PHYERR_RADAR
]);
2007 AWDATA_RX(phy_err_stats
[ATH9K_PHYERR_OFDM_TIMING
]);
2008 AWDATA_RX(phy_err_stats
[ATH9K_PHYERR_CCK_TIMING
]);
2010 WARN_ON(i
!= ATH9K_SSTATS_LEN
);
2013 /* End of ethtool get-stats functions */
2018 #ifdef CONFIG_PM_SLEEP
2020 static void ath9k_wow_map_triggers(struct ath_softc
*sc
,
2021 struct cfg80211_wowlan
*wowlan
,
2024 if (wowlan
->disconnect
)
2025 *wow_triggers
|= AH_WOW_LINK_CHANGE
|
2027 if (wowlan
->magic_pkt
)
2028 *wow_triggers
|= AH_WOW_MAGIC_PATTERN_EN
;
2030 if (wowlan
->n_patterns
)
2031 *wow_triggers
|= AH_WOW_USER_PATTERN_EN
;
2033 sc
->wow_enabled
= *wow_triggers
;
2037 static void ath9k_wow_add_disassoc_deauth_pattern(struct ath_softc
*sc
)
2039 struct ath_hw
*ah
= sc
->sc_ah
;
2040 struct ath_common
*common
= ath9k_hw_common(ah
);
2041 struct ath9k_hw_capabilities
*pcaps
= &ah
->caps
;
2042 int pattern_count
= 0;
2044 u8 dis_deauth_pattern
[MAX_PATTERN_SIZE
];
2045 u8 dis_deauth_mask
[MAX_PATTERN_SIZE
];
2047 memset(dis_deauth_pattern
, 0, MAX_PATTERN_SIZE
);
2048 memset(dis_deauth_mask
, 0, MAX_PATTERN_SIZE
);
2051 * Create Dissassociate / Deauthenticate packet filter
2053 * 2 bytes 2 byte 6 bytes 6 bytes 6 bytes
2054 * +--------------+----------+---------+--------+--------+----
2055 * + Frame Control+ Duration + DA + SA + BSSID +
2056 * +--------------+----------+---------+--------+--------+----
2058 * The above is the management frame format for disassociate/
2059 * deauthenticate pattern, from this we need to match the first byte
2060 * of 'Frame Control' and DA, SA, and BSSID fields
2061 * (skipping 2nd byte of FC and Duration feild.
2063 * Disassociate pattern
2064 * --------------------
2065 * Frame control = 00 00 1010
2066 * DA, SA, BSSID = x:x:x:x:x:x
2067 * Pattern will be A0000000 | x:x:x:x:x:x | x:x:x:x:x:x
2068 * | x:x:x:x:x:x -- 22 bytes
2070 * Deauthenticate pattern
2071 * ----------------------
2072 * Frame control = 00 00 1100
2073 * DA, SA, BSSID = x:x:x:x:x:x
2074 * Pattern will be C0000000 | x:x:x:x:x:x | x:x:x:x:x:x
2075 * | x:x:x:x:x:x -- 22 bytes
2078 /* Create Disassociate Pattern first */
2082 /* Fill out the mask with all FF's */
2084 for (i
= 0; i
< MAX_PATTERN_MASK_SIZE
; i
++)
2085 dis_deauth_mask
[i
] = 0xff;
2087 /* copy the first byte of frame control field */
2088 dis_deauth_pattern
[byte_cnt
] = 0xa0;
2091 /* skip 2nd byte of frame control and Duration field */
2095 * need not match the destination mac address, it can be a broadcast
2096 * mac address or an unicast to this station
2100 /* copy the source mac address */
2101 memcpy((dis_deauth_pattern
+ byte_cnt
), common
->curbssid
, ETH_ALEN
);
2105 /* copy the bssid, its same as the source mac address */
2107 memcpy((dis_deauth_pattern
+ byte_cnt
), common
->curbssid
, ETH_ALEN
);
2109 /* Create Disassociate pattern mask */
2111 if (pcaps
->hw_caps
& ATH9K_HW_WOW_PATTERN_MATCH_EXACT
) {
2113 if (pcaps
->hw_caps
& ATH9K_HW_WOW_PATTERN_MATCH_DWORD
) {
2115 * for AR9280, because of hardware limitation, the
2116 * first 4 bytes have to be matched for all patterns.
2117 * the mask for disassociation and de-auth pattern
2118 * matching need to enable the first 4 bytes.
2119 * also the duration field needs to be filled.
2121 dis_deauth_mask
[0] = 0xf0;
2124 * fill in duration field
2125 FIXME: what is the exact value ?
2127 dis_deauth_pattern
[2] = 0xff;
2128 dis_deauth_pattern
[3] = 0xff;
2130 dis_deauth_mask
[0] = 0xfe;
2133 dis_deauth_mask
[1] = 0x03;
2134 dis_deauth_mask
[2] = 0xc0;
2136 dis_deauth_mask
[0] = 0xef;
2137 dis_deauth_mask
[1] = 0x3f;
2138 dis_deauth_mask
[2] = 0x00;
2139 dis_deauth_mask
[3] = 0xfc;
2142 ath_dbg(common
, WOW
, "Adding disassoc/deauth patterns for WoW\n");
2144 ath9k_hw_wow_apply_pattern(ah
, dis_deauth_pattern
, dis_deauth_mask
,
2145 pattern_count
, byte_cnt
);
2149 * for de-authenticate pattern, only the first byte of the frame
2150 * control field gets changed from 0xA0 to 0xC0
2152 dis_deauth_pattern
[0] = 0xC0;
2154 ath9k_hw_wow_apply_pattern(ah
, dis_deauth_pattern
, dis_deauth_mask
,
2155 pattern_count
, byte_cnt
);
2159 static void ath9k_wow_add_pattern(struct ath_softc
*sc
,
2160 struct cfg80211_wowlan
*wowlan
)
2162 struct ath_hw
*ah
= sc
->sc_ah
;
2163 struct ath9k_wow_pattern
*wow_pattern
= NULL
;
2164 struct cfg80211_wowlan_trig_pkt_pattern
*patterns
= wowlan
->patterns
;
2168 if (!wowlan
->n_patterns
)
2172 * Add the new user configured patterns
2174 for (i
= 0; i
< wowlan
->n_patterns
; i
++) {
2176 wow_pattern
= kzalloc(sizeof(*wow_pattern
), GFP_KERNEL
);
2182 * TODO: convert the generic user space pattern to
2183 * appropriate chip specific/802.11 pattern.
2186 mask_len
= DIV_ROUND_UP(wowlan
->patterns
[i
].pattern_len
, 8);
2187 memset(wow_pattern
->pattern_bytes
, 0, MAX_PATTERN_SIZE
);
2188 memset(wow_pattern
->mask_bytes
, 0, MAX_PATTERN_SIZE
);
2189 memcpy(wow_pattern
->pattern_bytes
, patterns
[i
].pattern
,
2190 patterns
[i
].pattern_len
);
2191 memcpy(wow_pattern
->mask_bytes
, patterns
[i
].mask
, mask_len
);
2192 wow_pattern
->pattern_len
= patterns
[i
].pattern_len
;
2195 * just need to take care of deauth and disssoc pattern,
2196 * make sure we don't overwrite them.
2199 ath9k_hw_wow_apply_pattern(ah
, wow_pattern
->pattern_bytes
,
2200 wow_pattern
->mask_bytes
,
2202 wow_pattern
->pattern_len
);
2209 static int ath9k_suspend(struct ieee80211_hw
*hw
,
2210 struct cfg80211_wowlan
*wowlan
)
2212 struct ath_softc
*sc
= hw
->priv
;
2213 struct ath_hw
*ah
= sc
->sc_ah
;
2214 struct ath_common
*common
= ath9k_hw_common(ah
);
2215 u32 wow_triggers_enabled
= 0;
2218 mutex_lock(&sc
->mutex
);
2220 ath_cancel_work(sc
);
2222 del_timer_sync(&sc
->rx_poll_timer
);
2224 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
)) {
2225 ath_dbg(common
, ANY
, "Device not present\n");
2230 if (WARN_ON(!wowlan
)) {
2231 ath_dbg(common
, WOW
, "None of the WoW triggers enabled\n");
2236 if (!device_can_wakeup(sc
->dev
)) {
2237 ath_dbg(common
, WOW
, "device_can_wakeup failed, WoW is not enabled\n");
2243 * none of the sta vifs are associated
2244 * and we are not currently handling multivif
2245 * cases, for instance we have to seperately
2246 * configure 'keep alive frame' for each
2250 if (!test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
)) {
2251 ath_dbg(common
, WOW
, "None of the STA vifs are associated\n");
2256 if (sc
->nvifs
> 1) {
2257 ath_dbg(common
, WOW
, "WoW for multivif is not yet supported\n");
2262 ath9k_wow_map_triggers(sc
, wowlan
, &wow_triggers_enabled
);
2264 ath_dbg(common
, WOW
, "WoW triggers enabled 0x%x\n",
2265 wow_triggers_enabled
);
2267 ath9k_ps_wakeup(sc
);
2269 ath9k_stop_btcoex(sc
);
2272 * Enable wake up on recieving disassoc/deauth
2275 ath9k_wow_add_disassoc_deauth_pattern(sc
);
2277 if (wow_triggers_enabled
& AH_WOW_USER_PATTERN_EN
)
2278 ath9k_wow_add_pattern(sc
, wowlan
);
2280 spin_lock_bh(&sc
->sc_pcu_lock
);
2282 * To avoid false wake, we enable beacon miss interrupt only
2283 * when we go to sleep. We save the current interrupt mask
2284 * so we can restore it after the system wakes up
2286 sc
->wow_intr_before_sleep
= ah
->imask
;
2287 ah
->imask
&= ~ATH9K_INT_GLOBAL
;
2288 ath9k_hw_disable_interrupts(ah
);
2289 ah
->imask
= ATH9K_INT_BMISS
| ATH9K_INT_GLOBAL
;
2290 ath9k_hw_set_interrupts(ah
);
2291 ath9k_hw_enable_interrupts(ah
);
2293 spin_unlock_bh(&sc
->sc_pcu_lock
);
2296 * we can now sync irq and kill any running tasklets, since we already
2297 * disabled interrupts and not holding a spin lock
2299 synchronize_irq(sc
->irq
);
2300 tasklet_kill(&sc
->intr_tq
);
2302 ath9k_hw_wow_enable(ah
, wow_triggers_enabled
);
2304 ath9k_ps_restore(sc
);
2305 ath_dbg(common
, ANY
, "WoW enabled in ath9k\n");
2306 atomic_inc(&sc
->wow_sleep_proc_intr
);
2309 mutex_unlock(&sc
->mutex
);
2313 static int ath9k_resume(struct ieee80211_hw
*hw
)
2315 struct ath_softc
*sc
= hw
->priv
;
2316 struct ath_hw
*ah
= sc
->sc_ah
;
2317 struct ath_common
*common
= ath9k_hw_common(ah
);
2320 mutex_lock(&sc
->mutex
);
2322 ath9k_ps_wakeup(sc
);
2324 spin_lock_bh(&sc
->sc_pcu_lock
);
2326 ath9k_hw_disable_interrupts(ah
);
2327 ah
->imask
= sc
->wow_intr_before_sleep
;
2328 ath9k_hw_set_interrupts(ah
);
2329 ath9k_hw_enable_interrupts(ah
);
2331 spin_unlock_bh(&sc
->sc_pcu_lock
);
2333 wow_status
= ath9k_hw_wow_wakeup(ah
);
2335 if (atomic_read(&sc
->wow_got_bmiss_intr
) == 0) {
2337 * some devices may not pick beacon miss
2338 * as the reason they woke up so we add
2339 * that here for that shortcoming.
2341 wow_status
|= AH_WOW_BEACON_MISS
;
2342 atomic_dec(&sc
->wow_got_bmiss_intr
);
2343 ath_dbg(common
, ANY
, "Beacon miss interrupt picked up during WoW sleep\n");
2346 atomic_dec(&sc
->wow_sleep_proc_intr
);
2349 ath_dbg(common
, ANY
, "Waking up due to WoW triggers %s with WoW status = %x\n",
2350 ath9k_hw_wow_event_to_string(wow_status
), wow_status
);
2353 ath_restart_work(sc
);
2354 ath9k_start_btcoex(sc
);
2356 ath9k_ps_restore(sc
);
2357 mutex_unlock(&sc
->mutex
);
2362 static void ath9k_set_wakeup(struct ieee80211_hw
*hw
, bool enabled
)
2364 struct ath_softc
*sc
= hw
->priv
;
2366 mutex_lock(&sc
->mutex
);
2367 device_init_wakeup(sc
->dev
, 1);
2368 device_set_wakeup_enable(sc
->dev
, enabled
);
2369 mutex_unlock(&sc
->mutex
);
2374 struct ieee80211_ops ath9k_ops
= {
2376 .start
= ath9k_start
,
2378 .add_interface
= ath9k_add_interface
,
2379 .change_interface
= ath9k_change_interface
,
2380 .remove_interface
= ath9k_remove_interface
,
2381 .config
= ath9k_config
,
2382 .configure_filter
= ath9k_configure_filter
,
2383 .sta_add
= ath9k_sta_add
,
2384 .sta_remove
= ath9k_sta_remove
,
2385 .sta_notify
= ath9k_sta_notify
,
2386 .conf_tx
= ath9k_conf_tx
,
2387 .bss_info_changed
= ath9k_bss_info_changed
,
2388 .set_key
= ath9k_set_key
,
2389 .get_tsf
= ath9k_get_tsf
,
2390 .set_tsf
= ath9k_set_tsf
,
2391 .reset_tsf
= ath9k_reset_tsf
,
2392 .ampdu_action
= ath9k_ampdu_action
,
2393 .get_survey
= ath9k_get_survey
,
2394 .rfkill_poll
= ath9k_rfkill_poll_state
,
2395 .set_coverage_class
= ath9k_set_coverage_class
,
2396 .flush
= ath9k_flush
,
2397 .tx_frames_pending
= ath9k_tx_frames_pending
,
2398 .tx_last_beacon
= ath9k_tx_last_beacon
,
2399 .get_stats
= ath9k_get_stats
,
2400 .set_antenna
= ath9k_set_antenna
,
2401 .get_antenna
= ath9k_get_antenna
,
2403 #ifdef CONFIG_PM_SLEEP
2404 .suspend
= ath9k_suspend
,
2405 .resume
= ath9k_resume
,
2406 .set_wakeup
= ath9k_set_wakeup
,
2409 #ifdef CONFIG_ATH9K_DEBUGFS
2410 .get_et_sset_count
= ath9k_get_et_sset_count
,
2411 .get_et_stats
= ath9k_get_et_stats
,
2412 .get_et_strings
= ath9k_get_et_strings
,