2 * Copyright (c) 2008-2011 Atheros Communications Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <linux/nl80211.h>
18 #include <linux/delay.h>
22 static void ath9k_set_assoc_state(struct ath_softc
*sc
,
23 struct ieee80211_vif
*vif
);
25 u8
ath9k_parse_mpdudensity(u8 mpdudensity
)
28 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
29 * 0 for no restriction
38 switch (mpdudensity
) {
44 /* Our lower layer calculations limit our precision to
60 static bool ath9k_has_pending_frames(struct ath_softc
*sc
, struct ath_txq
*txq
)
64 spin_lock_bh(&txq
->axq_lock
);
66 if (txq
->axq_depth
|| !list_empty(&txq
->axq_acq
))
69 spin_unlock_bh(&txq
->axq_lock
);
73 static bool ath9k_setpower(struct ath_softc
*sc
, enum ath9k_power_mode mode
)
78 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
79 ret
= ath9k_hw_setpower(sc
->sc_ah
, mode
);
80 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
85 void ath9k_ps_wakeup(struct ath_softc
*sc
)
87 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
89 enum ath9k_power_mode power_mode
;
91 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
92 if (++sc
->ps_usecount
!= 1)
95 power_mode
= sc
->sc_ah
->power_mode
;
96 ath9k_hw_setpower(sc
->sc_ah
, ATH9K_PM_AWAKE
);
99 * While the hardware is asleep, the cycle counters contain no
100 * useful data. Better clear them now so that they don't mess up
101 * survey data results.
103 if (power_mode
!= ATH9K_PM_AWAKE
) {
104 spin_lock(&common
->cc_lock
);
105 ath_hw_cycle_counters_update(common
);
106 memset(&common
->cc_survey
, 0, sizeof(common
->cc_survey
));
107 memset(&common
->cc_ani
, 0, sizeof(common
->cc_ani
));
108 spin_unlock(&common
->cc_lock
);
112 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
115 void ath9k_ps_restore(struct ath_softc
*sc
)
117 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
118 enum ath9k_power_mode mode
;
122 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
123 if (--sc
->ps_usecount
!= 0)
127 ath9k_hw_setrxabort(sc
->sc_ah
, 1);
128 ath9k_hw_stopdmarecv(sc
->sc_ah
, &reset
);
129 mode
= ATH9K_PM_FULL_SLEEP
;
130 } else if (sc
->ps_enabled
&&
131 !(sc
->ps_flags
& (PS_WAIT_FOR_BEACON
|
133 PS_WAIT_FOR_PSPOLL_DATA
|
136 mode
= ATH9K_PM_NETWORK_SLEEP
;
137 if (ath9k_hw_btcoex_is_enabled(sc
->sc_ah
))
138 ath9k_btcoex_stop_gen_timer(sc
);
143 spin_lock(&common
->cc_lock
);
144 ath_hw_cycle_counters_update(common
);
145 spin_unlock(&common
->cc_lock
);
147 ath9k_hw_setpower(sc
->sc_ah
, mode
);
150 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
153 static void __ath_cancel_work(struct ath_softc
*sc
)
155 cancel_work_sync(&sc
->paprd_work
);
156 cancel_work_sync(&sc
->hw_check_work
);
157 cancel_delayed_work_sync(&sc
->tx_complete_work
);
158 cancel_delayed_work_sync(&sc
->hw_pll_work
);
160 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
161 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
))
162 cancel_work_sync(&sc
->mci_work
);
166 static void ath_cancel_work(struct ath_softc
*sc
)
168 __ath_cancel_work(sc
);
169 cancel_work_sync(&sc
->hw_reset_work
);
172 static void ath_restart_work(struct ath_softc
*sc
)
174 ieee80211_queue_delayed_work(sc
->hw
, &sc
->tx_complete_work
, 0);
176 if (AR_SREV_9340(sc
->sc_ah
) || AR_SREV_9485(sc
->sc_ah
) ||
177 AR_SREV_9550(sc
->sc_ah
))
178 ieee80211_queue_delayed_work(sc
->hw
, &sc
->hw_pll_work
,
179 msecs_to_jiffies(ATH_PLL_WORK_INTERVAL
));
181 ath_start_rx_poll(sc
, 3);
185 static bool ath_prepare_reset(struct ath_softc
*sc
, bool retry_tx
, bool flush
)
187 struct ath_hw
*ah
= sc
->sc_ah
;
190 ieee80211_stop_queues(sc
->hw
);
192 sc
->hw_busy_count
= 0;
194 del_timer_sync(&sc
->rx_poll_timer
);
196 ath9k_debug_samp_bb_mac(sc
);
197 ath9k_hw_disable_interrupts(ah
);
199 if (!ath_stoprecv(sc
))
202 if (!ath_drain_all_txq(sc
, retry_tx
))
206 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
207 ath_rx_tasklet(sc
, 1, true);
208 ath_rx_tasklet(sc
, 1, false);
216 static bool ath_complete_reset(struct ath_softc
*sc
, bool start
)
218 struct ath_hw
*ah
= sc
->sc_ah
;
219 struct ath_common
*common
= ath9k_hw_common(ah
);
222 if (ath_startrecv(sc
) != 0) {
223 ath_err(common
, "Unable to restart recv logic\n");
227 ath9k_cmn_update_txpow(ah
, sc
->curtxpow
,
228 sc
->config
.txpowlimit
, &sc
->curtxpow
);
230 clear_bit(SC_OP_HW_RESET
, &sc
->sc_flags
);
231 ath9k_hw_set_interrupts(ah
);
232 ath9k_hw_enable_interrupts(ah
);
234 if (!(sc
->hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
) && start
) {
235 if (!test_bit(SC_OP_BEACONS
, &sc
->sc_flags
))
238 ath9k_set_beacon(sc
);
240 if (ah
->opmode
== NL80211_IFTYPE_STATION
&&
241 test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
)) {
242 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
243 sc
->ps_flags
|= PS_BEACON_SYNC
| PS_WAIT_FOR_BEACON
;
244 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
247 ath_restart_work(sc
);
250 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_ANT_DIV_COMB
) && sc
->ant_rx
!= 3)
251 ath_ant_comb_update(sc
);
253 ieee80211_wake_queues(sc
->hw
);
258 static int ath_reset_internal(struct ath_softc
*sc
, struct ath9k_channel
*hchan
,
261 struct ath_hw
*ah
= sc
->sc_ah
;
262 struct ath_common
*common
= ath9k_hw_common(ah
);
263 struct ath9k_hw_cal_data
*caldata
= NULL
;
268 __ath_cancel_work(sc
);
270 spin_lock_bh(&sc
->sc_pcu_lock
);
272 if (!(sc
->hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
)) {
274 caldata
= &sc
->caldata
;
283 if (!ath_prepare_reset(sc
, retry_tx
, flush
))
286 ath_dbg(common
, CONFIG
, "Reset to %u MHz, HT40: %d fastcc: %d\n",
287 hchan
->channel
, IS_CHAN_HT40(hchan
), fastcc
);
289 r
= ath9k_hw_reset(ah
, hchan
, caldata
, fastcc
);
292 "Unable to reset channel, reset status %d\n", r
);
296 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
) &&
297 (sc
->hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
))
298 ath9k_mci_set_txpower(sc
, true, false);
300 if (!ath_complete_reset(sc
, true))
304 spin_unlock_bh(&sc
->sc_pcu_lock
);
310 * Set/change channels. If the channel is really being changed, it's done
311 * by reseting the chip. To accomplish this we must first cleanup any pending
312 * DMA, then restart stuff.
314 static int ath_set_channel(struct ath_softc
*sc
, struct ieee80211_hw
*hw
,
315 struct ath9k_channel
*hchan
)
319 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
))
322 r
= ath_reset_internal(sc
, hchan
, false);
327 static void ath_node_attach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
,
328 struct ieee80211_vif
*vif
)
332 an
= (struct ath_node
*)sta
->drv_priv
;
334 #ifdef CONFIG_ATH9K_DEBUGFS
335 spin_lock(&sc
->nodes_lock
);
336 list_add(&an
->list
, &sc
->nodes
);
337 spin_unlock(&sc
->nodes_lock
);
342 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
) {
343 ath_tx_node_init(sc
, an
);
344 an
->maxampdu
= 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR
+
345 sta
->ht_cap
.ampdu_factor
);
346 density
= ath9k_parse_mpdudensity(sta
->ht_cap
.ampdu_density
);
347 an
->mpdudensity
= density
;
351 static void ath_node_detach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
)
353 struct ath_node
*an
= (struct ath_node
*)sta
->drv_priv
;
355 #ifdef CONFIG_ATH9K_DEBUGFS
356 spin_lock(&sc
->nodes_lock
);
358 spin_unlock(&sc
->nodes_lock
);
362 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
363 ath_tx_node_cleanup(sc
, an
);
366 void ath9k_tasklet(unsigned long data
)
368 struct ath_softc
*sc
= (struct ath_softc
*)data
;
369 struct ath_hw
*ah
= sc
->sc_ah
;
370 struct ath_common
*common
= ath9k_hw_common(ah
);
371 enum ath_reset_type type
;
373 u32 status
= sc
->intrstatus
;
377 spin_lock(&sc
->sc_pcu_lock
);
379 if ((status
& ATH9K_INT_FATAL
) ||
380 (status
& ATH9K_INT_BB_WATCHDOG
)) {
382 if (status
& ATH9K_INT_FATAL
)
383 type
= RESET_TYPE_FATAL_INT
;
385 type
= RESET_TYPE_BB_WATCHDOG
;
387 ath9k_queue_reset(sc
, type
);
391 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
392 if ((status
& ATH9K_INT_TSFOOR
) && sc
->ps_enabled
) {
394 * TSF sync does not look correct; remain awake to sync with
397 ath_dbg(common
, PS
, "TSFOOR - Sync with next Beacon\n");
398 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
| PS_BEACON_SYNC
;
400 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
402 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
403 rxmask
= (ATH9K_INT_RXHP
| ATH9K_INT_RXLP
| ATH9K_INT_RXEOL
|
406 rxmask
= (ATH9K_INT_RX
| ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
408 if (status
& rxmask
) {
409 /* Check for high priority Rx first */
410 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
411 (status
& ATH9K_INT_RXHP
))
412 ath_rx_tasklet(sc
, 0, true);
414 ath_rx_tasklet(sc
, 0, false);
417 if (status
& ATH9K_INT_TX
) {
418 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
419 ath_tx_edma_tasklet(sc
);
424 ath9k_btcoex_handle_interrupt(sc
, status
);
427 /* re-enable hardware interrupt */
428 ath9k_hw_enable_interrupts(ah
);
430 spin_unlock(&sc
->sc_pcu_lock
);
431 ath9k_ps_restore(sc
);
434 irqreturn_t
ath_isr(int irq
, void *dev
)
436 #define SCHED_INTR ( \
438 ATH9K_INT_BB_WATCHDOG | \
448 ATH9K_INT_GENTIMER | \
451 struct ath_softc
*sc
= dev
;
452 struct ath_hw
*ah
= sc
->sc_ah
;
453 struct ath_common
*common
= ath9k_hw_common(ah
);
454 enum ath9k_int status
;
458 * The hardware is not ready/present, don't
459 * touch anything. Note this can happen early
460 * on if the IRQ is shared.
462 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
))
465 /* shared irq, not for us */
467 if (!ath9k_hw_intrpend(ah
))
470 if (test_bit(SC_OP_HW_RESET
, &sc
->sc_flags
)) {
471 ath9k_hw_kill_interrupts(ah
);
476 * Figure out the reason(s) for the interrupt. Note
477 * that the hal returns a pseudo-ISR that may include
478 * bits we haven't explicitly enabled so we mask the
479 * value to insure we only process bits we requested.
481 ath9k_hw_getisr(ah
, &status
); /* NB: clears ISR too */
482 status
&= ah
->imask
; /* discard unasked-for bits */
485 * If there are no status bits set, then this interrupt was not
486 * for me (should have been caught above).
491 /* Cache the status */
492 sc
->intrstatus
= status
;
494 if (status
& SCHED_INTR
)
497 #ifdef CONFIG_PM_SLEEP
498 if (status
& ATH9K_INT_BMISS
) {
499 if (atomic_read(&sc
->wow_sleep_proc_intr
) == 0) {
500 ath_dbg(common
, ANY
, "during WoW we got a BMISS\n");
501 atomic_inc(&sc
->wow_got_bmiss_intr
);
502 atomic_dec(&sc
->wow_sleep_proc_intr
);
504 ath_dbg(common
, INTERRUPT
, "beacon miss interrupt\n");
509 * If a FATAL or RXORN interrupt is received, we have to reset the
512 if ((status
& ATH9K_INT_FATAL
) || ((status
& ATH9K_INT_RXORN
) &&
513 !(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)))
516 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
517 (status
& ATH9K_INT_BB_WATCHDOG
)) {
519 spin_lock(&common
->cc_lock
);
520 ath_hw_cycle_counters_update(common
);
521 ar9003_hw_bb_watchdog_dbg_info(ah
);
522 spin_unlock(&common
->cc_lock
);
527 if (status
& ATH9K_INT_SWBA
)
528 tasklet_schedule(&sc
->bcon_tasklet
);
530 if (status
& ATH9K_INT_TXURN
)
531 ath9k_hw_updatetxtriglevel(ah
, true);
533 if (status
& ATH9K_INT_RXEOL
) {
534 ah
->imask
&= ~(ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
535 ath9k_hw_set_interrupts(ah
);
538 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
539 if (status
& ATH9K_INT_TIM_TIMER
) {
540 if (ATH_DBG_WARN_ON_ONCE(sc
->ps_idle
))
542 /* Clear RxAbort bit so that we can
544 ath9k_setpower(sc
, ATH9K_PM_AWAKE
);
545 spin_lock(&sc
->sc_pm_lock
);
546 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
547 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
;
548 spin_unlock(&sc
->sc_pm_lock
);
553 ath_debug_stat_interrupt(sc
, status
);
556 /* turn off every interrupt */
557 ath9k_hw_disable_interrupts(ah
);
558 tasklet_schedule(&sc
->intr_tq
);
566 static int ath_reset(struct ath_softc
*sc
, bool retry_tx
)
572 r
= ath_reset_internal(sc
, NULL
, retry_tx
);
576 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
577 if (ATH_TXQ_SETUP(sc
, i
)) {
578 spin_lock_bh(&sc
->tx
.txq
[i
].axq_lock
);
579 ath_txq_schedule(sc
, &sc
->tx
.txq
[i
]);
580 spin_unlock_bh(&sc
->tx
.txq
[i
].axq_lock
);
585 ath9k_ps_restore(sc
);
590 void ath9k_queue_reset(struct ath_softc
*sc
, enum ath_reset_type type
)
592 #ifdef CONFIG_ATH9K_DEBUGFS
593 RESET_STAT_INC(sc
, type
);
595 set_bit(SC_OP_HW_RESET
, &sc
->sc_flags
);
596 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
599 void ath_reset_work(struct work_struct
*work
)
601 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, hw_reset_work
);
606 /**********************/
607 /* mac80211 callbacks */
608 /**********************/
610 static int ath9k_start(struct ieee80211_hw
*hw
)
612 struct ath_softc
*sc
= hw
->priv
;
613 struct ath_hw
*ah
= sc
->sc_ah
;
614 struct ath_common
*common
= ath9k_hw_common(ah
);
615 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
616 struct ath9k_channel
*init_channel
;
619 ath_dbg(common
, CONFIG
,
620 "Starting driver with initial channel: %d MHz\n",
621 curchan
->center_freq
);
624 mutex_lock(&sc
->mutex
);
626 init_channel
= ath9k_cmn_get_curchannel(hw
, ah
);
628 /* Reset SERDES registers */
629 ath9k_hw_configpcipowersave(ah
, false);
632 * The basic interface to setting the hardware in a good
633 * state is ``reset''. On return the hardware is known to
634 * be powered up and with interrupts disabled. This must
635 * be followed by initialization of the appropriate bits
636 * and then setup of the interrupt mask.
638 spin_lock_bh(&sc
->sc_pcu_lock
);
640 atomic_set(&ah
->intr_ref_cnt
, -1);
642 r
= ath9k_hw_reset(ah
, init_channel
, ah
->caldata
, false);
645 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
646 r
, curchan
->center_freq
);
647 ah
->reset_power_on
= false;
650 /* Setup our intr mask. */
651 ah
->imask
= ATH9K_INT_TX
| ATH9K_INT_RXEOL
|
652 ATH9K_INT_RXORN
| ATH9K_INT_FATAL
|
655 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
656 ah
->imask
|= ATH9K_INT_RXHP
|
658 ATH9K_INT_BB_WATCHDOG
;
660 ah
->imask
|= ATH9K_INT_RX
;
662 ah
->imask
|= ATH9K_INT_GTT
;
664 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
665 ah
->imask
|= ATH9K_INT_CST
;
669 clear_bit(SC_OP_INVALID
, &sc
->sc_flags
);
670 sc
->sc_ah
->is_monitoring
= false;
672 if (!ath_complete_reset(sc
, false))
673 ah
->reset_power_on
= false;
675 if (ah
->led_pin
>= 0) {
676 ath9k_hw_cfg_output(ah
, ah
->led_pin
,
677 AR_GPIO_OUTPUT_MUX_AS_OUTPUT
);
678 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 0);
682 * Reset key cache to sane defaults (all entries cleared) instead of
683 * semi-random values after suspend/resume.
685 ath9k_cmn_init_crypto(sc
->sc_ah
);
687 spin_unlock_bh(&sc
->sc_pcu_lock
);
689 if (ah
->caps
.pcie_lcr_extsync_en
&& common
->bus_ops
->extn_synch_en
)
690 common
->bus_ops
->extn_synch_en(common
);
692 mutex_unlock(&sc
->mutex
);
694 ath9k_ps_restore(sc
);
699 static void ath9k_tx(struct ieee80211_hw
*hw
,
700 struct ieee80211_tx_control
*control
,
703 struct ath_softc
*sc
= hw
->priv
;
704 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
705 struct ath_tx_control txctl
;
706 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
709 if (sc
->ps_enabled
) {
711 * mac80211 does not set PM field for normal data frames, so we
712 * need to update that based on the current PS mode.
714 if (ieee80211_is_data(hdr
->frame_control
) &&
715 !ieee80211_is_nullfunc(hdr
->frame_control
) &&
716 !ieee80211_has_pm(hdr
->frame_control
)) {
718 "Add PM=1 for a TX frame while in PS mode\n");
719 hdr
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
723 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_NETWORK_SLEEP
)) {
725 * We are using PS-Poll and mac80211 can request TX while in
726 * power save mode. Need to wake up hardware for the TX to be
727 * completed and if needed, also for RX of buffered frames.
730 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
731 if (!(sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
732 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
733 if (ieee80211_is_pspoll(hdr
->frame_control
)) {
735 "Sending PS-Poll to pick a buffered frame\n");
736 sc
->ps_flags
|= PS_WAIT_FOR_PSPOLL_DATA
;
738 ath_dbg(common
, PS
, "Wake up to complete TX\n");
739 sc
->ps_flags
|= PS_WAIT_FOR_TX_ACK
;
742 * The actual restore operation will happen only after
743 * the ps_flags bit is cleared. We are just dropping
744 * the ps_usecount here.
746 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
747 ath9k_ps_restore(sc
);
751 * Cannot tx while the hardware is in full sleep, it first needs a full
752 * chip reset to recover from that
754 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_FULL_SLEEP
)) {
755 ath_err(common
, "TX while HW is in FULL_SLEEP mode\n");
759 memset(&txctl
, 0, sizeof(struct ath_tx_control
));
760 txctl
.txq
= sc
->tx
.txq_map
[skb_get_queue_mapping(skb
)];
761 txctl
.sta
= control
->sta
;
763 ath_dbg(common
, XMIT
, "transmitting packet, skb: %p\n", skb
);
765 if (ath_tx_start(hw
, skb
, &txctl
) != 0) {
766 ath_dbg(common
, XMIT
, "TX failed\n");
767 TX_STAT_INC(txctl
.txq
->axq_qnum
, txfailed
);
773 ieee80211_free_txskb(hw
, skb
);
776 static void ath9k_stop(struct ieee80211_hw
*hw
)
778 struct ath_softc
*sc
= hw
->priv
;
779 struct ath_hw
*ah
= sc
->sc_ah
;
780 struct ath_common
*common
= ath9k_hw_common(ah
);
783 mutex_lock(&sc
->mutex
);
786 del_timer_sync(&sc
->rx_poll_timer
);
788 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
)) {
789 ath_dbg(common
, ANY
, "Device not present\n");
790 mutex_unlock(&sc
->mutex
);
794 /* Ensure HW is awake when we try to shut it down. */
797 spin_lock_bh(&sc
->sc_pcu_lock
);
799 /* prevent tasklets to enable interrupts once we disable them */
800 ah
->imask
&= ~ATH9K_INT_GLOBAL
;
802 /* make sure h/w will not generate any interrupt
803 * before setting the invalid flag. */
804 ath9k_hw_disable_interrupts(ah
);
806 spin_unlock_bh(&sc
->sc_pcu_lock
);
808 /* we can now sync irq and kill any running tasklets, since we already
809 * disabled interrupts and not holding a spin lock */
810 synchronize_irq(sc
->irq
);
811 tasklet_kill(&sc
->intr_tq
);
812 tasklet_kill(&sc
->bcon_tasklet
);
814 prev_idle
= sc
->ps_idle
;
817 spin_lock_bh(&sc
->sc_pcu_lock
);
819 if (ah
->led_pin
>= 0) {
820 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 1);
821 ath9k_hw_cfg_gpio_input(ah
, ah
->led_pin
);
824 ath_prepare_reset(sc
, false, true);
827 dev_kfree_skb_any(sc
->rx
.frag
);
832 ah
->curchan
= ath9k_cmn_get_curchannel(hw
, ah
);
834 ath9k_hw_reset(ah
, ah
->curchan
, ah
->caldata
, false);
835 ath9k_hw_phy_disable(ah
);
837 ath9k_hw_configpcipowersave(ah
, true);
839 spin_unlock_bh(&sc
->sc_pcu_lock
);
841 ath9k_ps_restore(sc
);
843 set_bit(SC_OP_INVALID
, &sc
->sc_flags
);
844 sc
->ps_idle
= prev_idle
;
846 mutex_unlock(&sc
->mutex
);
848 ath_dbg(common
, CONFIG
, "Driver halt\n");
851 bool ath9k_uses_beacons(int type
)
854 case NL80211_IFTYPE_AP
:
855 case NL80211_IFTYPE_ADHOC
:
856 case NL80211_IFTYPE_MESH_POINT
:
863 static void ath9k_vif_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
865 struct ath9k_vif_iter_data
*iter_data
= data
;
868 if (iter_data
->hw_macaddr
)
869 for (i
= 0; i
< ETH_ALEN
; i
++)
870 iter_data
->mask
[i
] &=
871 ~(iter_data
->hw_macaddr
[i
] ^ mac
[i
]);
874 case NL80211_IFTYPE_AP
:
877 case NL80211_IFTYPE_STATION
:
878 iter_data
->nstations
++;
880 case NL80211_IFTYPE_ADHOC
:
881 iter_data
->nadhocs
++;
883 case NL80211_IFTYPE_MESH_POINT
:
884 iter_data
->nmeshes
++;
886 case NL80211_IFTYPE_WDS
:
894 static void ath9k_sta_vif_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
896 struct ath_softc
*sc
= data
;
897 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
899 if (vif
->type
!= NL80211_IFTYPE_STATION
)
902 if (avp
->primary_sta_vif
)
903 ath9k_set_assoc_state(sc
, vif
);
906 /* Called with sc->mutex held. */
907 void ath9k_calculate_iter_data(struct ieee80211_hw
*hw
,
908 struct ieee80211_vif
*vif
,
909 struct ath9k_vif_iter_data
*iter_data
)
911 struct ath_softc
*sc
= hw
->priv
;
912 struct ath_hw
*ah
= sc
->sc_ah
;
913 struct ath_common
*common
= ath9k_hw_common(ah
);
916 * Use the hardware MAC address as reference, the hardware uses it
917 * together with the BSSID mask when matching addresses.
919 memset(iter_data
, 0, sizeof(*iter_data
));
920 iter_data
->hw_macaddr
= common
->macaddr
;
921 memset(&iter_data
->mask
, 0xff, ETH_ALEN
);
924 ath9k_vif_iter(iter_data
, vif
->addr
, vif
);
926 /* Get list of all active MAC addresses */
927 ieee80211_iterate_active_interfaces_atomic(
928 sc
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
929 ath9k_vif_iter
, iter_data
);
932 /* Called with sc->mutex held. */
933 static void ath9k_calculate_summary_state(struct ieee80211_hw
*hw
,
934 struct ieee80211_vif
*vif
)
936 struct ath_softc
*sc
= hw
->priv
;
937 struct ath_hw
*ah
= sc
->sc_ah
;
938 struct ath_common
*common
= ath9k_hw_common(ah
);
939 struct ath9k_vif_iter_data iter_data
;
940 enum nl80211_iftype old_opmode
= ah
->opmode
;
942 ath9k_calculate_iter_data(hw
, vif
, &iter_data
);
944 memcpy(common
->bssidmask
, iter_data
.mask
, ETH_ALEN
);
945 ath_hw_setbssidmask(common
);
947 if (iter_data
.naps
> 0) {
948 ath9k_hw_set_tsfadjust(ah
, true);
949 ah
->opmode
= NL80211_IFTYPE_AP
;
951 ath9k_hw_set_tsfadjust(ah
, false);
953 if (iter_data
.nmeshes
)
954 ah
->opmode
= NL80211_IFTYPE_MESH_POINT
;
955 else if (iter_data
.nwds
)
956 ah
->opmode
= NL80211_IFTYPE_AP
;
957 else if (iter_data
.nadhocs
)
958 ah
->opmode
= NL80211_IFTYPE_ADHOC
;
960 ah
->opmode
= NL80211_IFTYPE_STATION
;
963 ath9k_hw_setopmode(ah
);
965 if ((iter_data
.nstations
+ iter_data
.nadhocs
+ iter_data
.nmeshes
) > 0)
966 ah
->imask
|= ATH9K_INT_TSFOOR
;
968 ah
->imask
&= ~ATH9K_INT_TSFOOR
;
970 ath9k_hw_set_interrupts(ah
);
973 * If we are changing the opmode to STATION,
974 * a beacon sync needs to be done.
976 if (ah
->opmode
== NL80211_IFTYPE_STATION
&&
977 old_opmode
== NL80211_IFTYPE_AP
&&
978 test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
)) {
979 ieee80211_iterate_active_interfaces_atomic(
980 sc
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
981 ath9k_sta_vif_iter
, sc
);
985 static int ath9k_add_interface(struct ieee80211_hw
*hw
,
986 struct ieee80211_vif
*vif
)
988 struct ath_softc
*sc
= hw
->priv
;
989 struct ath_hw
*ah
= sc
->sc_ah
;
990 struct ath_common
*common
= ath9k_hw_common(ah
);
992 mutex_lock(&sc
->mutex
);
994 ath_dbg(common
, CONFIG
, "Attach a VIF of type: %d\n", vif
->type
);
998 ath9k_calculate_summary_state(hw
, vif
);
999 ath9k_ps_restore(sc
);
1001 if (ath9k_uses_beacons(vif
->type
))
1002 ath9k_beacon_assign_slot(sc
, vif
);
1004 mutex_unlock(&sc
->mutex
);
1008 static int ath9k_change_interface(struct ieee80211_hw
*hw
,
1009 struct ieee80211_vif
*vif
,
1010 enum nl80211_iftype new_type
,
1013 struct ath_softc
*sc
= hw
->priv
;
1014 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1016 ath_dbg(common
, CONFIG
, "Change Interface\n");
1017 mutex_lock(&sc
->mutex
);
1019 if (ath9k_uses_beacons(vif
->type
))
1020 ath9k_beacon_remove_slot(sc
, vif
);
1022 vif
->type
= new_type
;
1025 ath9k_ps_wakeup(sc
);
1026 ath9k_calculate_summary_state(hw
, vif
);
1027 ath9k_ps_restore(sc
);
1029 if (ath9k_uses_beacons(vif
->type
))
1030 ath9k_beacon_assign_slot(sc
, vif
);
1032 mutex_unlock(&sc
->mutex
);
1036 static void ath9k_remove_interface(struct ieee80211_hw
*hw
,
1037 struct ieee80211_vif
*vif
)
1039 struct ath_softc
*sc
= hw
->priv
;
1040 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1042 ath_dbg(common
, CONFIG
, "Detach Interface\n");
1044 mutex_lock(&sc
->mutex
);
1048 if (ath9k_uses_beacons(vif
->type
))
1049 ath9k_beacon_remove_slot(sc
, vif
);
1051 ath9k_ps_wakeup(sc
);
1052 ath9k_calculate_summary_state(hw
, NULL
);
1053 ath9k_ps_restore(sc
);
1055 mutex_unlock(&sc
->mutex
);
1058 static void ath9k_enable_ps(struct ath_softc
*sc
)
1060 struct ath_hw
*ah
= sc
->sc_ah
;
1061 struct ath_common
*common
= ath9k_hw_common(ah
);
1063 sc
->ps_enabled
= true;
1064 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1065 if ((ah
->imask
& ATH9K_INT_TIM_TIMER
) == 0) {
1066 ah
->imask
|= ATH9K_INT_TIM_TIMER
;
1067 ath9k_hw_set_interrupts(ah
);
1069 ath9k_hw_setrxabort(ah
, 1);
1071 ath_dbg(common
, PS
, "PowerSave enabled\n");
1074 static void ath9k_disable_ps(struct ath_softc
*sc
)
1076 struct ath_hw
*ah
= sc
->sc_ah
;
1077 struct ath_common
*common
= ath9k_hw_common(ah
);
1079 sc
->ps_enabled
= false;
1080 ath9k_hw_setpower(ah
, ATH9K_PM_AWAKE
);
1081 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1082 ath9k_hw_setrxabort(ah
, 0);
1083 sc
->ps_flags
&= ~(PS_WAIT_FOR_BEACON
|
1085 PS_WAIT_FOR_PSPOLL_DATA
|
1086 PS_WAIT_FOR_TX_ACK
);
1087 if (ah
->imask
& ATH9K_INT_TIM_TIMER
) {
1088 ah
->imask
&= ~ATH9K_INT_TIM_TIMER
;
1089 ath9k_hw_set_interrupts(ah
);
1092 ath_dbg(common
, PS
, "PowerSave disabled\n");
1095 static int ath9k_config(struct ieee80211_hw
*hw
, u32 changed
)
1097 struct ath_softc
*sc
= hw
->priv
;
1098 struct ath_hw
*ah
= sc
->sc_ah
;
1099 struct ath_common
*common
= ath9k_hw_common(ah
);
1100 struct ieee80211_conf
*conf
= &hw
->conf
;
1101 bool reset_channel
= false;
1103 ath9k_ps_wakeup(sc
);
1104 mutex_lock(&sc
->mutex
);
1106 if (changed
& IEEE80211_CONF_CHANGE_IDLE
) {
1107 sc
->ps_idle
= !!(conf
->flags
& IEEE80211_CONF_IDLE
);
1109 ath_cancel_work(sc
);
1110 ath9k_stop_btcoex(sc
);
1112 ath9k_start_btcoex(sc
);
1114 * The chip needs a reset to properly wake up from
1117 reset_channel
= ah
->chip_fullsleep
;
1122 * We just prepare to enable PS. We have to wait until our AP has
1123 * ACK'd our null data frame to disable RX otherwise we'll ignore
1124 * those ACKs and end up retransmitting the same null data frames.
1125 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1127 if (changed
& IEEE80211_CONF_CHANGE_PS
) {
1128 unsigned long flags
;
1129 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
1130 if (conf
->flags
& IEEE80211_CONF_PS
)
1131 ath9k_enable_ps(sc
);
1133 ath9k_disable_ps(sc
);
1134 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
1137 if (changed
& IEEE80211_CONF_CHANGE_MONITOR
) {
1138 if (conf
->flags
& IEEE80211_CONF_MONITOR
) {
1139 ath_dbg(common
, CONFIG
, "Monitor mode is enabled\n");
1140 sc
->sc_ah
->is_monitoring
= true;
1142 ath_dbg(common
, CONFIG
, "Monitor mode is disabled\n");
1143 sc
->sc_ah
->is_monitoring
= false;
1147 if ((changed
& IEEE80211_CONF_CHANGE_CHANNEL
) || reset_channel
) {
1148 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
1149 int pos
= curchan
->hw_value
;
1151 unsigned long flags
;
1154 old_pos
= ah
->curchan
- &ah
->channels
[0];
1156 ath_dbg(common
, CONFIG
, "Set channel: %d MHz type: %d\n",
1157 curchan
->center_freq
, conf
->channel_type
);
1159 /* update survey stats for the old channel before switching */
1160 spin_lock_irqsave(&common
->cc_lock
, flags
);
1161 ath_update_survey_stats(sc
);
1162 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1165 * Preserve the current channel values, before updating
1168 if (ah
->curchan
&& (old_pos
== pos
))
1169 ath9k_hw_getnf(ah
, ah
->curchan
);
1171 ath9k_cmn_update_ichannel(&sc
->sc_ah
->channels
[pos
],
1172 curchan
, conf
->channel_type
);
1175 * If the operating channel changes, change the survey in-use flags
1177 * Reset the survey data for the new channel, unless we're switching
1178 * back to the operating channel from an off-channel operation.
1180 if (!(hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
) &&
1181 sc
->cur_survey
!= &sc
->survey
[pos
]) {
1184 sc
->cur_survey
->filled
&= ~SURVEY_INFO_IN_USE
;
1186 sc
->cur_survey
= &sc
->survey
[pos
];
1188 memset(sc
->cur_survey
, 0, sizeof(struct survey_info
));
1189 sc
->cur_survey
->filled
|= SURVEY_INFO_IN_USE
;
1190 } else if (!(sc
->survey
[pos
].filled
& SURVEY_INFO_IN_USE
)) {
1191 memset(&sc
->survey
[pos
], 0, sizeof(struct survey_info
));
1194 if (ath_set_channel(sc
, hw
, &sc
->sc_ah
->channels
[pos
]) < 0) {
1195 ath_err(common
, "Unable to set channel\n");
1196 mutex_unlock(&sc
->mutex
);
1197 ath9k_ps_restore(sc
);
1202 * The most recent snapshot of channel->noisefloor for the old
1203 * channel is only available after the hardware reset. Copy it to
1204 * the survey stats now.
1207 ath_update_survey_nf(sc
, old_pos
);
1210 if (changed
& IEEE80211_CONF_CHANGE_POWER
) {
1211 ath_dbg(common
, CONFIG
, "Set power: %d\n", conf
->power_level
);
1212 sc
->config
.txpowlimit
= 2 * conf
->power_level
;
1213 ath9k_cmn_update_txpow(ah
, sc
->curtxpow
,
1214 sc
->config
.txpowlimit
, &sc
->curtxpow
);
1217 mutex_unlock(&sc
->mutex
);
1218 ath9k_ps_restore(sc
);
1223 #define SUPPORTED_FILTERS \
1224 (FIF_PROMISC_IN_BSS | \
1229 FIF_BCN_PRBRESP_PROMISC | \
1233 /* FIXME: sc->sc_full_reset ? */
1234 static void ath9k_configure_filter(struct ieee80211_hw
*hw
,
1235 unsigned int changed_flags
,
1236 unsigned int *total_flags
,
1239 struct ath_softc
*sc
= hw
->priv
;
1242 changed_flags
&= SUPPORTED_FILTERS
;
1243 *total_flags
&= SUPPORTED_FILTERS
;
1245 sc
->rx
.rxfilter
= *total_flags
;
1246 ath9k_ps_wakeup(sc
);
1247 rfilt
= ath_calcrxfilter(sc
);
1248 ath9k_hw_setrxfilter(sc
->sc_ah
, rfilt
);
1249 ath9k_ps_restore(sc
);
1251 ath_dbg(ath9k_hw_common(sc
->sc_ah
), CONFIG
, "Set HW RX filter: 0x%x\n",
1255 static int ath9k_sta_add(struct ieee80211_hw
*hw
,
1256 struct ieee80211_vif
*vif
,
1257 struct ieee80211_sta
*sta
)
1259 struct ath_softc
*sc
= hw
->priv
;
1260 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1261 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1262 struct ieee80211_key_conf ps_key
= { };
1264 ath_node_attach(sc
, sta
, vif
);
1266 if (vif
->type
!= NL80211_IFTYPE_AP
&&
1267 vif
->type
!= NL80211_IFTYPE_AP_VLAN
)
1270 an
->ps_key
= ath_key_config(common
, vif
, sta
, &ps_key
);
1275 static void ath9k_del_ps_key(struct ath_softc
*sc
,
1276 struct ieee80211_vif
*vif
,
1277 struct ieee80211_sta
*sta
)
1279 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1280 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1281 struct ieee80211_key_conf ps_key
= { .hw_key_idx
= an
->ps_key
};
1286 ath_key_delete(common
, &ps_key
);
1289 static int ath9k_sta_remove(struct ieee80211_hw
*hw
,
1290 struct ieee80211_vif
*vif
,
1291 struct ieee80211_sta
*sta
)
1293 struct ath_softc
*sc
= hw
->priv
;
1295 ath9k_del_ps_key(sc
, vif
, sta
);
1296 ath_node_detach(sc
, sta
);
1301 static void ath9k_sta_notify(struct ieee80211_hw
*hw
,
1302 struct ieee80211_vif
*vif
,
1303 enum sta_notify_cmd cmd
,
1304 struct ieee80211_sta
*sta
)
1306 struct ath_softc
*sc
= hw
->priv
;
1307 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1309 if (!sta
->ht_cap
.ht_supported
)
1313 case STA_NOTIFY_SLEEP
:
1314 an
->sleeping
= true;
1315 ath_tx_aggr_sleep(sta
, sc
, an
);
1317 case STA_NOTIFY_AWAKE
:
1318 an
->sleeping
= false;
1319 ath_tx_aggr_wakeup(sc
, an
);
1324 static int ath9k_conf_tx(struct ieee80211_hw
*hw
,
1325 struct ieee80211_vif
*vif
, u16 queue
,
1326 const struct ieee80211_tx_queue_params
*params
)
1328 struct ath_softc
*sc
= hw
->priv
;
1329 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1330 struct ath_txq
*txq
;
1331 struct ath9k_tx_queue_info qi
;
1334 if (queue
>= WME_NUM_AC
)
1337 txq
= sc
->tx
.txq_map
[queue
];
1339 ath9k_ps_wakeup(sc
);
1340 mutex_lock(&sc
->mutex
);
1342 memset(&qi
, 0, sizeof(struct ath9k_tx_queue_info
));
1344 qi
.tqi_aifs
= params
->aifs
;
1345 qi
.tqi_cwmin
= params
->cw_min
;
1346 qi
.tqi_cwmax
= params
->cw_max
;
1347 qi
.tqi_burstTime
= params
->txop
* 32;
1349 ath_dbg(common
, CONFIG
,
1350 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1351 queue
, txq
->axq_qnum
, params
->aifs
, params
->cw_min
,
1352 params
->cw_max
, params
->txop
);
1354 ath_update_max_aggr_framelen(sc
, queue
, qi
.tqi_burstTime
);
1355 ret
= ath_txq_update(sc
, txq
->axq_qnum
, &qi
);
1357 ath_err(common
, "TXQ Update failed\n");
1359 mutex_unlock(&sc
->mutex
);
1360 ath9k_ps_restore(sc
);
1365 static int ath9k_set_key(struct ieee80211_hw
*hw
,
1366 enum set_key_cmd cmd
,
1367 struct ieee80211_vif
*vif
,
1368 struct ieee80211_sta
*sta
,
1369 struct ieee80211_key_conf
*key
)
1371 struct ath_softc
*sc
= hw
->priv
;
1372 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1375 if (ath9k_modparam_nohwcrypt
)
1378 if ((vif
->type
== NL80211_IFTYPE_ADHOC
||
1379 vif
->type
== NL80211_IFTYPE_MESH_POINT
) &&
1380 (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
||
1381 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
) &&
1382 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
1384 * For now, disable hw crypto for the RSN IBSS group keys. This
1385 * could be optimized in the future to use a modified key cache
1386 * design to support per-STA RX GTK, but until that gets
1387 * implemented, use of software crypto for group addressed
1388 * frames is a acceptable to allow RSN IBSS to be used.
1393 mutex_lock(&sc
->mutex
);
1394 ath9k_ps_wakeup(sc
);
1395 ath_dbg(common
, CONFIG
, "Set HW Key\n");
1400 ath9k_del_ps_key(sc
, vif
, sta
);
1402 ret
= ath_key_config(common
, vif
, sta
, key
);
1404 key
->hw_key_idx
= ret
;
1405 /* push IV and Michael MIC generation to stack */
1406 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
1407 if (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
)
1408 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
1409 if (sc
->sc_ah
->sw_mgmt_crypto
&&
1410 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
)
1411 key
->flags
|= IEEE80211_KEY_FLAG_SW_MGMT_TX
;
1416 ath_key_delete(common
, key
);
1422 ath9k_ps_restore(sc
);
1423 mutex_unlock(&sc
->mutex
);
1428 static void ath9k_set_assoc_state(struct ath_softc
*sc
,
1429 struct ieee80211_vif
*vif
)
1431 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1432 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1433 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1434 unsigned long flags
;
1436 set_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
);
1437 avp
->primary_sta_vif
= true;
1440 * Set the AID, BSSID and do beacon-sync only when
1441 * the HW opmode is STATION.
1443 * But the primary bit is set above in any case.
1445 if (sc
->sc_ah
->opmode
!= NL80211_IFTYPE_STATION
)
1448 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
1449 common
->curaid
= bss_conf
->aid
;
1450 ath9k_hw_write_associd(sc
->sc_ah
);
1452 sc
->last_rssi
= ATH_RSSI_DUMMY_MARKER
;
1453 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
1455 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
1456 sc
->ps_flags
|= PS_BEACON_SYNC
| PS_WAIT_FOR_BEACON
;
1457 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
1459 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
))
1460 ath9k_mci_update_wlan_channels(sc
, false);
1462 ath_dbg(common
, CONFIG
,
1463 "Primary Station interface: %pM, BSSID: %pM\n",
1464 vif
->addr
, common
->curbssid
);
1467 static void ath9k_bss_assoc_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
1469 struct ath_softc
*sc
= data
;
1470 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1472 if (test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
))
1475 if (bss_conf
->assoc
)
1476 ath9k_set_assoc_state(sc
, vif
);
1479 static void ath9k_bss_info_changed(struct ieee80211_hw
*hw
,
1480 struct ieee80211_vif
*vif
,
1481 struct ieee80211_bss_conf
*bss_conf
,
1485 (BSS_CHANGED_ASSOC | \
1486 BSS_CHANGED_IBSS | \
1487 BSS_CHANGED_BEACON_ENABLED)
1489 struct ath_softc
*sc
= hw
->priv
;
1490 struct ath_hw
*ah
= sc
->sc_ah
;
1491 struct ath_common
*common
= ath9k_hw_common(ah
);
1492 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1495 ath9k_ps_wakeup(sc
);
1496 mutex_lock(&sc
->mutex
);
1498 if (changed
& BSS_CHANGED_ASSOC
) {
1499 ath_dbg(common
, CONFIG
, "BSSID %pM Changed ASSOC %d\n",
1500 bss_conf
->bssid
, bss_conf
->assoc
);
1502 if (avp
->primary_sta_vif
&& !bss_conf
->assoc
) {
1503 clear_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
);
1504 avp
->primary_sta_vif
= false;
1506 if (ah
->opmode
== NL80211_IFTYPE_STATION
)
1507 clear_bit(SC_OP_BEACONS
, &sc
->sc_flags
);
1510 ieee80211_iterate_active_interfaces_atomic(
1511 sc
->hw
, IEEE80211_IFACE_ITER_RESUME_ALL
,
1512 ath9k_bss_assoc_iter
, sc
);
1514 if (!test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
) &&
1515 ah
->opmode
== NL80211_IFTYPE_STATION
) {
1516 memset(common
->curbssid
, 0, ETH_ALEN
);
1518 ath9k_hw_write_associd(sc
->sc_ah
);
1519 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
))
1520 ath9k_mci_update_wlan_channels(sc
, true);
1524 if (changed
& BSS_CHANGED_IBSS
) {
1525 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
1526 common
->curaid
= bss_conf
->aid
;
1527 ath9k_hw_write_associd(sc
->sc_ah
);
1530 if ((changed
& BSS_CHANGED_BEACON_ENABLED
) ||
1531 (changed
& BSS_CHANGED_BEACON_INT
)) {
1532 if (ah
->opmode
== NL80211_IFTYPE_AP
&&
1533 bss_conf
->enable_beacon
)
1534 ath9k_set_tsfadjust(sc
, vif
);
1535 if (ath9k_allow_beacon_config(sc
, vif
))
1536 ath9k_beacon_config(sc
, vif
, changed
);
1539 if (changed
& BSS_CHANGED_ERP_SLOT
) {
1540 if (bss_conf
->use_short_slot
)
1544 if (vif
->type
== NL80211_IFTYPE_AP
) {
1546 * Defer update, so that connected stations can adjust
1547 * their settings at the same time.
1548 * See beacon.c for more details
1550 sc
->beacon
.slottime
= slottime
;
1551 sc
->beacon
.updateslot
= UPDATE
;
1553 ah
->slottime
= slottime
;
1554 ath9k_hw_init_global_settings(ah
);
1558 if (changed
& CHECK_ANI
)
1561 mutex_unlock(&sc
->mutex
);
1562 ath9k_ps_restore(sc
);
1567 static u64
ath9k_get_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
1569 struct ath_softc
*sc
= hw
->priv
;
1572 mutex_lock(&sc
->mutex
);
1573 ath9k_ps_wakeup(sc
);
1574 tsf
= ath9k_hw_gettsf64(sc
->sc_ah
);
1575 ath9k_ps_restore(sc
);
1576 mutex_unlock(&sc
->mutex
);
1581 static void ath9k_set_tsf(struct ieee80211_hw
*hw
,
1582 struct ieee80211_vif
*vif
,
1585 struct ath_softc
*sc
= hw
->priv
;
1587 mutex_lock(&sc
->mutex
);
1588 ath9k_ps_wakeup(sc
);
1589 ath9k_hw_settsf64(sc
->sc_ah
, tsf
);
1590 ath9k_ps_restore(sc
);
1591 mutex_unlock(&sc
->mutex
);
1594 static void ath9k_reset_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
1596 struct ath_softc
*sc
= hw
->priv
;
1598 mutex_lock(&sc
->mutex
);
1600 ath9k_ps_wakeup(sc
);
1601 ath9k_hw_reset_tsf(sc
->sc_ah
);
1602 ath9k_ps_restore(sc
);
1604 mutex_unlock(&sc
->mutex
);
1607 static int ath9k_ampdu_action(struct ieee80211_hw
*hw
,
1608 struct ieee80211_vif
*vif
,
1609 enum ieee80211_ampdu_mlme_action action
,
1610 struct ieee80211_sta
*sta
,
1611 u16 tid
, u16
*ssn
, u8 buf_size
)
1613 struct ath_softc
*sc
= hw
->priv
;
1619 case IEEE80211_AMPDU_RX_START
:
1621 case IEEE80211_AMPDU_RX_STOP
:
1623 case IEEE80211_AMPDU_TX_START
:
1624 ath9k_ps_wakeup(sc
);
1625 ret
= ath_tx_aggr_start(sc
, sta
, tid
, ssn
);
1627 ieee80211_start_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1628 ath9k_ps_restore(sc
);
1630 case IEEE80211_AMPDU_TX_STOP
:
1631 ath9k_ps_wakeup(sc
);
1632 ath_tx_aggr_stop(sc
, sta
, tid
);
1633 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1634 ath9k_ps_restore(sc
);
1636 case IEEE80211_AMPDU_TX_OPERATIONAL
:
1637 ath9k_ps_wakeup(sc
);
1638 ath_tx_aggr_resume(sc
, sta
, tid
);
1639 ath9k_ps_restore(sc
);
1642 ath_err(ath9k_hw_common(sc
->sc_ah
), "Unknown AMPDU action\n");
1650 static int ath9k_get_survey(struct ieee80211_hw
*hw
, int idx
,
1651 struct survey_info
*survey
)
1653 struct ath_softc
*sc
= hw
->priv
;
1654 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1655 struct ieee80211_supported_band
*sband
;
1656 struct ieee80211_channel
*chan
;
1657 unsigned long flags
;
1660 spin_lock_irqsave(&common
->cc_lock
, flags
);
1662 ath_update_survey_stats(sc
);
1664 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
];
1665 if (sband
&& idx
>= sband
->n_channels
) {
1666 idx
-= sband
->n_channels
;
1671 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
];
1673 if (!sband
|| idx
>= sband
->n_channels
) {
1674 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1678 chan
= &sband
->channels
[idx
];
1679 pos
= chan
->hw_value
;
1680 memcpy(survey
, &sc
->survey
[pos
], sizeof(*survey
));
1681 survey
->channel
= chan
;
1682 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1687 static void ath9k_set_coverage_class(struct ieee80211_hw
*hw
, u8 coverage_class
)
1689 struct ath_softc
*sc
= hw
->priv
;
1690 struct ath_hw
*ah
= sc
->sc_ah
;
1692 mutex_lock(&sc
->mutex
);
1693 ah
->coverage_class
= coverage_class
;
1695 ath9k_ps_wakeup(sc
);
1696 ath9k_hw_init_global_settings(ah
);
1697 ath9k_ps_restore(sc
);
1699 mutex_unlock(&sc
->mutex
);
1702 static void ath9k_flush(struct ieee80211_hw
*hw
, bool drop
)
1704 struct ath_softc
*sc
= hw
->priv
;
1705 struct ath_hw
*ah
= sc
->sc_ah
;
1706 struct ath_common
*common
= ath9k_hw_common(ah
);
1707 int timeout
= 200; /* ms */
1711 mutex_lock(&sc
->mutex
);
1712 cancel_delayed_work_sync(&sc
->tx_complete_work
);
1714 if (ah
->ah_flags
& AH_UNPLUGGED
) {
1715 ath_dbg(common
, ANY
, "Device has been unplugged!\n");
1716 mutex_unlock(&sc
->mutex
);
1720 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
)) {
1721 ath_dbg(common
, ANY
, "Device not present\n");
1722 mutex_unlock(&sc
->mutex
);
1726 for (j
= 0; j
< timeout
; j
++) {
1730 usleep_range(1000, 2000);
1732 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
1733 if (!ATH_TXQ_SETUP(sc
, i
))
1736 npend
= ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]);
1747 ath9k_ps_wakeup(sc
);
1748 spin_lock_bh(&sc
->sc_pcu_lock
);
1749 drain_txq
= ath_drain_all_txq(sc
, false);
1750 spin_unlock_bh(&sc
->sc_pcu_lock
);
1753 ath_reset(sc
, false);
1755 ath9k_ps_restore(sc
);
1756 ieee80211_wake_queues(hw
);
1759 ieee80211_queue_delayed_work(hw
, &sc
->tx_complete_work
, 0);
1760 mutex_unlock(&sc
->mutex
);
1763 static bool ath9k_tx_frames_pending(struct ieee80211_hw
*hw
)
1765 struct ath_softc
*sc
= hw
->priv
;
1768 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
1769 if (!ATH_TXQ_SETUP(sc
, i
))
1772 if (ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]))
1778 static int ath9k_tx_last_beacon(struct ieee80211_hw
*hw
)
1780 struct ath_softc
*sc
= hw
->priv
;
1781 struct ath_hw
*ah
= sc
->sc_ah
;
1782 struct ieee80211_vif
*vif
;
1783 struct ath_vif
*avp
;
1785 struct ath_tx_status ts
;
1786 bool edma
= !!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
);
1789 vif
= sc
->beacon
.bslot
[0];
1793 if (!vif
->bss_conf
.enable_beacon
)
1796 avp
= (void *)vif
->drv_priv
;
1798 if (!sc
->beacon
.tx_processed
&& !edma
) {
1799 tasklet_disable(&sc
->bcon_tasklet
);
1802 if (!bf
|| !bf
->bf_mpdu
)
1805 status
= ath9k_hw_txprocdesc(ah
, bf
->bf_desc
, &ts
);
1806 if (status
== -EINPROGRESS
)
1809 sc
->beacon
.tx_processed
= true;
1810 sc
->beacon
.tx_last
= !(ts
.ts_status
& ATH9K_TXERR_MASK
);
1813 tasklet_enable(&sc
->bcon_tasklet
);
1816 return sc
->beacon
.tx_last
;
1819 static int ath9k_get_stats(struct ieee80211_hw
*hw
,
1820 struct ieee80211_low_level_stats
*stats
)
1822 struct ath_softc
*sc
= hw
->priv
;
1823 struct ath_hw
*ah
= sc
->sc_ah
;
1824 struct ath9k_mib_stats
*mib_stats
= &ah
->ah_mibStats
;
1826 stats
->dot11ACKFailureCount
= mib_stats
->ackrcv_bad
;
1827 stats
->dot11RTSFailureCount
= mib_stats
->rts_bad
;
1828 stats
->dot11FCSErrorCount
= mib_stats
->fcs_bad
;
1829 stats
->dot11RTSSuccessCount
= mib_stats
->rts_good
;
1833 static u32
fill_chainmask(u32 cap
, u32
new)
1838 for (i
= 0; cap
&& new; i
++, cap
>>= 1) {
1839 if (!(cap
& BIT(0)))
1851 static bool validate_antenna_mask(struct ath_hw
*ah
, u32 val
)
1853 switch (val
& 0x7) {
1859 return (ah
->caps
.rx_chainmask
== 1);
1865 static int ath9k_set_antenna(struct ieee80211_hw
*hw
, u32 tx_ant
, u32 rx_ant
)
1867 struct ath_softc
*sc
= hw
->priv
;
1868 struct ath_hw
*ah
= sc
->sc_ah
;
1870 if (ah
->caps
.rx_chainmask
!= 1)
1873 if (!validate_antenna_mask(ah
, rx_ant
) || !tx_ant
)
1876 sc
->ant_rx
= rx_ant
;
1877 sc
->ant_tx
= tx_ant
;
1879 if (ah
->caps
.rx_chainmask
== 1)
1882 /* AR9100 runs into calibration issues if not all rx chains are enabled */
1883 if (AR_SREV_9100(ah
))
1884 ah
->rxchainmask
= 0x7;
1886 ah
->rxchainmask
= fill_chainmask(ah
->caps
.rx_chainmask
, rx_ant
);
1888 ah
->txchainmask
= fill_chainmask(ah
->caps
.tx_chainmask
, tx_ant
);
1889 ath9k_reload_chainmask_settings(sc
);
1894 static int ath9k_get_antenna(struct ieee80211_hw
*hw
, u32
*tx_ant
, u32
*rx_ant
)
1896 struct ath_softc
*sc
= hw
->priv
;
1898 *tx_ant
= sc
->ant_tx
;
1899 *rx_ant
= sc
->ant_rx
;
1903 #ifdef CONFIG_ATH9K_DEBUGFS
1905 /* Ethtool support for get-stats */
1907 #define AMKSTR(nm) #nm "_BE", #nm "_BK", #nm "_VI", #nm "_VO"
1908 static const char ath9k_gstrings_stats
[][ETH_GSTRING_LEN
] = {
1915 AMKSTR(d_tx_mpdus_queued
),
1916 AMKSTR(d_tx_mpdus_completed
),
1917 AMKSTR(d_tx_mpdu_xretries
),
1918 AMKSTR(d_tx_aggregates
),
1919 AMKSTR(d_tx_ampdus_queued_hw
),
1920 AMKSTR(d_tx_ampdus_queued_sw
),
1921 AMKSTR(d_tx_ampdus_completed
),
1922 AMKSTR(d_tx_ampdu_retries
),
1923 AMKSTR(d_tx_ampdu_xretries
),
1924 AMKSTR(d_tx_fifo_underrun
),
1925 AMKSTR(d_tx_op_exceeded
),
1926 AMKSTR(d_tx_timer_expiry
),
1927 AMKSTR(d_tx_desc_cfg_err
),
1928 AMKSTR(d_tx_data_underrun
),
1929 AMKSTR(d_tx_delim_underrun
),
1931 "d_rx_decrypt_crc_err",
1934 "d_rx_pre_delim_crc_err",
1935 "d_rx_post_delim_crc_err",
1936 "d_rx_decrypt_busy_err",
1938 "d_rx_phyerr_radar",
1939 "d_rx_phyerr_ofdm_timing",
1940 "d_rx_phyerr_cck_timing",
1943 #define ATH9K_SSTATS_LEN ARRAY_SIZE(ath9k_gstrings_stats)
1945 static void ath9k_get_et_strings(struct ieee80211_hw
*hw
,
1946 struct ieee80211_vif
*vif
,
1949 if (sset
== ETH_SS_STATS
)
1950 memcpy(data
, *ath9k_gstrings_stats
,
1951 sizeof(ath9k_gstrings_stats
));
1954 static int ath9k_get_et_sset_count(struct ieee80211_hw
*hw
,
1955 struct ieee80211_vif
*vif
, int sset
)
1957 if (sset
== ETH_SS_STATS
)
1958 return ATH9K_SSTATS_LEN
;
1962 #define PR_QNUM(_n) (sc->tx.txq_map[_n]->axq_qnum)
1963 #define AWDATA(elem) \
1965 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_BE)].elem; \
1966 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_BK)].elem; \
1967 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_VI)].elem; \
1968 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_VO)].elem; \
1971 #define AWDATA_RX(elem) \
1973 data[i++] = sc->debug.stats.rxstats.elem; \
1976 static void ath9k_get_et_stats(struct ieee80211_hw
*hw
,
1977 struct ieee80211_vif
*vif
,
1978 struct ethtool_stats
*stats
, u64
*data
)
1980 struct ath_softc
*sc
= hw
->priv
;
1983 data
[i
++] = (sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_BE
)].tx_pkts_all
+
1984 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_BK
)].tx_pkts_all
+
1985 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_VI
)].tx_pkts_all
+
1986 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_VO
)].tx_pkts_all
);
1987 data
[i
++] = (sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_BE
)].tx_bytes_all
+
1988 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_BK
)].tx_bytes_all
+
1989 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_VI
)].tx_bytes_all
+
1990 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_VO
)].tx_bytes_all
);
1991 AWDATA_RX(rx_pkts_all
);
1992 AWDATA_RX(rx_bytes_all
);
1994 AWDATA(tx_pkts_all
);
1995 AWDATA(tx_bytes_all
);
2000 AWDATA(a_queued_hw
);
2001 AWDATA(a_queued_sw
);
2002 AWDATA(a_completed
);
2005 AWDATA(fifo_underrun
);
2008 AWDATA(desc_cfg_err
);
2009 AWDATA(data_underrun
);
2010 AWDATA(delim_underrun
);
2012 AWDATA_RX(decrypt_crc_err
);
2015 AWDATA_RX(pre_delim_crc_err
);
2016 AWDATA_RX(post_delim_crc_err
);
2017 AWDATA_RX(decrypt_busy_err
);
2019 AWDATA_RX(phy_err_stats
[ATH9K_PHYERR_RADAR
]);
2020 AWDATA_RX(phy_err_stats
[ATH9K_PHYERR_OFDM_TIMING
]);
2021 AWDATA_RX(phy_err_stats
[ATH9K_PHYERR_CCK_TIMING
]);
2023 WARN_ON(i
!= ATH9K_SSTATS_LEN
);
2026 /* End of ethtool get-stats functions */
2031 #ifdef CONFIG_PM_SLEEP
2033 static void ath9k_wow_map_triggers(struct ath_softc
*sc
,
2034 struct cfg80211_wowlan
*wowlan
,
2037 if (wowlan
->disconnect
)
2038 *wow_triggers
|= AH_WOW_LINK_CHANGE
|
2040 if (wowlan
->magic_pkt
)
2041 *wow_triggers
|= AH_WOW_MAGIC_PATTERN_EN
;
2043 if (wowlan
->n_patterns
)
2044 *wow_triggers
|= AH_WOW_USER_PATTERN_EN
;
2046 sc
->wow_enabled
= *wow_triggers
;
2050 static void ath9k_wow_add_disassoc_deauth_pattern(struct ath_softc
*sc
)
2052 struct ath_hw
*ah
= sc
->sc_ah
;
2053 struct ath_common
*common
= ath9k_hw_common(ah
);
2054 struct ath9k_hw_capabilities
*pcaps
= &ah
->caps
;
2055 int pattern_count
= 0;
2057 u8 dis_deauth_pattern
[MAX_PATTERN_SIZE
];
2058 u8 dis_deauth_mask
[MAX_PATTERN_SIZE
];
2060 memset(dis_deauth_pattern
, 0, MAX_PATTERN_SIZE
);
2061 memset(dis_deauth_mask
, 0, MAX_PATTERN_SIZE
);
2064 * Create Dissassociate / Deauthenticate packet filter
2066 * 2 bytes 2 byte 6 bytes 6 bytes 6 bytes
2067 * +--------------+----------+---------+--------+--------+----
2068 * + Frame Control+ Duration + DA + SA + BSSID +
2069 * +--------------+----------+---------+--------+--------+----
2071 * The above is the management frame format for disassociate/
2072 * deauthenticate pattern, from this we need to match the first byte
2073 * of 'Frame Control' and DA, SA, and BSSID fields
2074 * (skipping 2nd byte of FC and Duration feild.
2076 * Disassociate pattern
2077 * --------------------
2078 * Frame control = 00 00 1010
2079 * DA, SA, BSSID = x:x:x:x:x:x
2080 * Pattern will be A0000000 | x:x:x:x:x:x | x:x:x:x:x:x
2081 * | x:x:x:x:x:x -- 22 bytes
2083 * Deauthenticate pattern
2084 * ----------------------
2085 * Frame control = 00 00 1100
2086 * DA, SA, BSSID = x:x:x:x:x:x
2087 * Pattern will be C0000000 | x:x:x:x:x:x | x:x:x:x:x:x
2088 * | x:x:x:x:x:x -- 22 bytes
2091 /* Create Disassociate Pattern first */
2095 /* Fill out the mask with all FF's */
2097 for (i
= 0; i
< MAX_PATTERN_MASK_SIZE
; i
++)
2098 dis_deauth_mask
[i
] = 0xff;
2100 /* copy the first byte of frame control field */
2101 dis_deauth_pattern
[byte_cnt
] = 0xa0;
2104 /* skip 2nd byte of frame control and Duration field */
2108 * need not match the destination mac address, it can be a broadcast
2109 * mac address or an unicast to this station
2113 /* copy the source mac address */
2114 memcpy((dis_deauth_pattern
+ byte_cnt
), common
->curbssid
, ETH_ALEN
);
2118 /* copy the bssid, its same as the source mac address */
2120 memcpy((dis_deauth_pattern
+ byte_cnt
), common
->curbssid
, ETH_ALEN
);
2122 /* Create Disassociate pattern mask */
2124 if (pcaps
->hw_caps
& ATH9K_HW_WOW_PATTERN_MATCH_EXACT
) {
2126 if (pcaps
->hw_caps
& ATH9K_HW_WOW_PATTERN_MATCH_DWORD
) {
2128 * for AR9280, because of hardware limitation, the
2129 * first 4 bytes have to be matched for all patterns.
2130 * the mask for disassociation and de-auth pattern
2131 * matching need to enable the first 4 bytes.
2132 * also the duration field needs to be filled.
2134 dis_deauth_mask
[0] = 0xf0;
2137 * fill in duration field
2138 FIXME: what is the exact value ?
2140 dis_deauth_pattern
[2] = 0xff;
2141 dis_deauth_pattern
[3] = 0xff;
2143 dis_deauth_mask
[0] = 0xfe;
2146 dis_deauth_mask
[1] = 0x03;
2147 dis_deauth_mask
[2] = 0xc0;
2149 dis_deauth_mask
[0] = 0xef;
2150 dis_deauth_mask
[1] = 0x3f;
2151 dis_deauth_mask
[2] = 0x00;
2152 dis_deauth_mask
[3] = 0xfc;
2155 ath_dbg(common
, WOW
, "Adding disassoc/deauth patterns for WoW\n");
2157 ath9k_hw_wow_apply_pattern(ah
, dis_deauth_pattern
, dis_deauth_mask
,
2158 pattern_count
, byte_cnt
);
2162 * for de-authenticate pattern, only the first byte of the frame
2163 * control field gets changed from 0xA0 to 0xC0
2165 dis_deauth_pattern
[0] = 0xC0;
2167 ath9k_hw_wow_apply_pattern(ah
, dis_deauth_pattern
, dis_deauth_mask
,
2168 pattern_count
, byte_cnt
);
2172 static void ath9k_wow_add_pattern(struct ath_softc
*sc
,
2173 struct cfg80211_wowlan
*wowlan
)
2175 struct ath_hw
*ah
= sc
->sc_ah
;
2176 struct ath9k_wow_pattern
*wow_pattern
= NULL
;
2177 struct cfg80211_wowlan_trig_pkt_pattern
*patterns
= wowlan
->patterns
;
2181 if (!wowlan
->n_patterns
)
2185 * Add the new user configured patterns
2187 for (i
= 0; i
< wowlan
->n_patterns
; i
++) {
2189 wow_pattern
= kzalloc(sizeof(*wow_pattern
), GFP_KERNEL
);
2195 * TODO: convert the generic user space pattern to
2196 * appropriate chip specific/802.11 pattern.
2199 mask_len
= DIV_ROUND_UP(wowlan
->patterns
[i
].pattern_len
, 8);
2200 memset(wow_pattern
->pattern_bytes
, 0, MAX_PATTERN_SIZE
);
2201 memset(wow_pattern
->mask_bytes
, 0, MAX_PATTERN_SIZE
);
2202 memcpy(wow_pattern
->pattern_bytes
, patterns
[i
].pattern
,
2203 patterns
[i
].pattern_len
);
2204 memcpy(wow_pattern
->mask_bytes
, patterns
[i
].mask
, mask_len
);
2205 wow_pattern
->pattern_len
= patterns
[i
].pattern_len
;
2208 * just need to take care of deauth and disssoc pattern,
2209 * make sure we don't overwrite them.
2212 ath9k_hw_wow_apply_pattern(ah
, wow_pattern
->pattern_bytes
,
2213 wow_pattern
->mask_bytes
,
2215 wow_pattern
->pattern_len
);
2222 static int ath9k_suspend(struct ieee80211_hw
*hw
,
2223 struct cfg80211_wowlan
*wowlan
)
2225 struct ath_softc
*sc
= hw
->priv
;
2226 struct ath_hw
*ah
= sc
->sc_ah
;
2227 struct ath_common
*common
= ath9k_hw_common(ah
);
2228 u32 wow_triggers_enabled
= 0;
2231 mutex_lock(&sc
->mutex
);
2233 ath_cancel_work(sc
);
2235 del_timer_sync(&sc
->rx_poll_timer
);
2237 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
)) {
2238 ath_dbg(common
, ANY
, "Device not present\n");
2243 if (WARN_ON(!wowlan
)) {
2244 ath_dbg(common
, WOW
, "None of the WoW triggers enabled\n");
2249 if (!device_can_wakeup(sc
->dev
)) {
2250 ath_dbg(common
, WOW
, "device_can_wakeup failed, WoW is not enabled\n");
2256 * none of the sta vifs are associated
2257 * and we are not currently handling multivif
2258 * cases, for instance we have to seperately
2259 * configure 'keep alive frame' for each
2263 if (!test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
)) {
2264 ath_dbg(common
, WOW
, "None of the STA vifs are associated\n");
2269 if (sc
->nvifs
> 1) {
2270 ath_dbg(common
, WOW
, "WoW for multivif is not yet supported\n");
2275 ath9k_wow_map_triggers(sc
, wowlan
, &wow_triggers_enabled
);
2277 ath_dbg(common
, WOW
, "WoW triggers enabled 0x%x\n",
2278 wow_triggers_enabled
);
2280 ath9k_ps_wakeup(sc
);
2282 ath9k_stop_btcoex(sc
);
2285 * Enable wake up on recieving disassoc/deauth
2288 ath9k_wow_add_disassoc_deauth_pattern(sc
);
2290 if (wow_triggers_enabled
& AH_WOW_USER_PATTERN_EN
)
2291 ath9k_wow_add_pattern(sc
, wowlan
);
2293 spin_lock_bh(&sc
->sc_pcu_lock
);
2295 * To avoid false wake, we enable beacon miss interrupt only
2296 * when we go to sleep. We save the current interrupt mask
2297 * so we can restore it after the system wakes up
2299 sc
->wow_intr_before_sleep
= ah
->imask
;
2300 ah
->imask
&= ~ATH9K_INT_GLOBAL
;
2301 ath9k_hw_disable_interrupts(ah
);
2302 ah
->imask
= ATH9K_INT_BMISS
| ATH9K_INT_GLOBAL
;
2303 ath9k_hw_set_interrupts(ah
);
2304 ath9k_hw_enable_interrupts(ah
);
2306 spin_unlock_bh(&sc
->sc_pcu_lock
);
2309 * we can now sync irq and kill any running tasklets, since we already
2310 * disabled interrupts and not holding a spin lock
2312 synchronize_irq(sc
->irq
);
2313 tasklet_kill(&sc
->intr_tq
);
2315 ath9k_hw_wow_enable(ah
, wow_triggers_enabled
);
2317 ath9k_ps_restore(sc
);
2318 ath_dbg(common
, ANY
, "WoW enabled in ath9k\n");
2319 atomic_inc(&sc
->wow_sleep_proc_intr
);
2322 mutex_unlock(&sc
->mutex
);
2326 static int ath9k_resume(struct ieee80211_hw
*hw
)
2328 struct ath_softc
*sc
= hw
->priv
;
2329 struct ath_hw
*ah
= sc
->sc_ah
;
2330 struct ath_common
*common
= ath9k_hw_common(ah
);
2333 mutex_lock(&sc
->mutex
);
2335 ath9k_ps_wakeup(sc
);
2337 spin_lock_bh(&sc
->sc_pcu_lock
);
2339 ath9k_hw_disable_interrupts(ah
);
2340 ah
->imask
= sc
->wow_intr_before_sleep
;
2341 ath9k_hw_set_interrupts(ah
);
2342 ath9k_hw_enable_interrupts(ah
);
2344 spin_unlock_bh(&sc
->sc_pcu_lock
);
2346 wow_status
= ath9k_hw_wow_wakeup(ah
);
2348 if (atomic_read(&sc
->wow_got_bmiss_intr
) == 0) {
2350 * some devices may not pick beacon miss
2351 * as the reason they woke up so we add
2352 * that here for that shortcoming.
2354 wow_status
|= AH_WOW_BEACON_MISS
;
2355 atomic_dec(&sc
->wow_got_bmiss_intr
);
2356 ath_dbg(common
, ANY
, "Beacon miss interrupt picked up during WoW sleep\n");
2359 atomic_dec(&sc
->wow_sleep_proc_intr
);
2362 ath_dbg(common
, ANY
, "Waking up due to WoW triggers %s with WoW status = %x\n",
2363 ath9k_hw_wow_event_to_string(wow_status
), wow_status
);
2366 ath_restart_work(sc
);
2367 ath9k_start_btcoex(sc
);
2369 ath9k_ps_restore(sc
);
2370 mutex_unlock(&sc
->mutex
);
2375 static void ath9k_set_wakeup(struct ieee80211_hw
*hw
, bool enabled
)
2377 struct ath_softc
*sc
= hw
->priv
;
2379 mutex_lock(&sc
->mutex
);
2380 device_init_wakeup(sc
->dev
, 1);
2381 device_set_wakeup_enable(sc
->dev
, enabled
);
2382 mutex_unlock(&sc
->mutex
);
2387 struct ieee80211_ops ath9k_ops
= {
2389 .start
= ath9k_start
,
2391 .add_interface
= ath9k_add_interface
,
2392 .change_interface
= ath9k_change_interface
,
2393 .remove_interface
= ath9k_remove_interface
,
2394 .config
= ath9k_config
,
2395 .configure_filter
= ath9k_configure_filter
,
2396 .sta_add
= ath9k_sta_add
,
2397 .sta_remove
= ath9k_sta_remove
,
2398 .sta_notify
= ath9k_sta_notify
,
2399 .conf_tx
= ath9k_conf_tx
,
2400 .bss_info_changed
= ath9k_bss_info_changed
,
2401 .set_key
= ath9k_set_key
,
2402 .get_tsf
= ath9k_get_tsf
,
2403 .set_tsf
= ath9k_set_tsf
,
2404 .reset_tsf
= ath9k_reset_tsf
,
2405 .ampdu_action
= ath9k_ampdu_action
,
2406 .get_survey
= ath9k_get_survey
,
2407 .rfkill_poll
= ath9k_rfkill_poll_state
,
2408 .set_coverage_class
= ath9k_set_coverage_class
,
2409 .flush
= ath9k_flush
,
2410 .tx_frames_pending
= ath9k_tx_frames_pending
,
2411 .tx_last_beacon
= ath9k_tx_last_beacon
,
2412 .get_stats
= ath9k_get_stats
,
2413 .set_antenna
= ath9k_set_antenna
,
2414 .get_antenna
= ath9k_get_antenna
,
2416 #ifdef CONFIG_PM_SLEEP
2417 .suspend
= ath9k_suspend
,
2418 .resume
= ath9k_resume
,
2419 .set_wakeup
= ath9k_set_wakeup
,
2422 #ifdef CONFIG_ATH9K_DEBUGFS
2423 .get_et_sset_count
= ath9k_get_et_sset_count
,
2424 .get_et_stats
= ath9k_get_et_stats
,
2425 .get_et_strings
= ath9k_get_et_strings
,