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 u8
parse_mpdudensity(u8 mpdudensity
)
25 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
26 * 0 for no restriction
35 switch (mpdudensity
) {
41 /* Our lower layer calculations limit our precision to
57 static bool ath9k_has_pending_frames(struct ath_softc
*sc
, struct ath_txq
*txq
)
61 spin_lock_bh(&txq
->axq_lock
);
63 if (txq
->axq_depth
|| !list_empty(&txq
->axq_acq
))
66 spin_unlock_bh(&txq
->axq_lock
);
70 static bool ath9k_setpower(struct ath_softc
*sc
, enum ath9k_power_mode mode
)
75 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
76 ret
= ath9k_hw_setpower(sc
->sc_ah
, mode
);
77 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
82 void ath9k_ps_wakeup(struct ath_softc
*sc
)
84 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
86 enum ath9k_power_mode power_mode
;
88 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
89 if (++sc
->ps_usecount
!= 1)
92 power_mode
= sc
->sc_ah
->power_mode
;
93 ath9k_hw_setpower(sc
->sc_ah
, ATH9K_PM_AWAKE
);
96 * While the hardware is asleep, the cycle counters contain no
97 * useful data. Better clear them now so that they don't mess up
98 * survey data results.
100 if (power_mode
!= ATH9K_PM_AWAKE
) {
101 spin_lock(&common
->cc_lock
);
102 ath_hw_cycle_counters_update(common
);
103 memset(&common
->cc_survey
, 0, sizeof(common
->cc_survey
));
104 spin_unlock(&common
->cc_lock
);
108 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
111 void ath9k_ps_restore(struct ath_softc
*sc
)
113 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
114 enum ath9k_power_mode mode
;
118 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
119 if (--sc
->ps_usecount
!= 0)
123 ath9k_hw_setrxabort(sc
->sc_ah
, 1);
124 ath9k_hw_stopdmarecv(sc
->sc_ah
, &reset
);
125 mode
= ATH9K_PM_FULL_SLEEP
;
126 } else if (sc
->ps_enabled
&&
127 !(sc
->ps_flags
& (PS_WAIT_FOR_BEACON
|
129 PS_WAIT_FOR_PSPOLL_DATA
|
130 PS_WAIT_FOR_TX_ACK
))) {
131 mode
= ATH9K_PM_NETWORK_SLEEP
;
136 spin_lock(&common
->cc_lock
);
137 ath_hw_cycle_counters_update(common
);
138 spin_unlock(&common
->cc_lock
);
140 ath9k_hw_setpower(sc
->sc_ah
, mode
);
143 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
146 void ath_start_ani(struct ath_common
*common
)
148 struct ath_hw
*ah
= common
->ah
;
149 unsigned long timestamp
= jiffies_to_msecs(jiffies
);
150 struct ath_softc
*sc
= (struct ath_softc
*) common
->priv
;
152 if (!(sc
->sc_flags
& SC_OP_ANI_RUN
))
155 if (sc
->sc_flags
& SC_OP_OFFCHANNEL
)
158 common
->ani
.longcal_timer
= timestamp
;
159 common
->ani
.shortcal_timer
= timestamp
;
160 common
->ani
.checkani_timer
= timestamp
;
162 mod_timer(&common
->ani
.timer
,
164 msecs_to_jiffies((u32
)ah
->config
.ani_poll_interval
));
167 static void ath_update_survey_nf(struct ath_softc
*sc
, int channel
)
169 struct ath_hw
*ah
= sc
->sc_ah
;
170 struct ath9k_channel
*chan
= &ah
->channels
[channel
];
171 struct survey_info
*survey
= &sc
->survey
[channel
];
173 if (chan
->noisefloor
) {
174 survey
->filled
|= SURVEY_INFO_NOISE_DBM
;
175 survey
->noise
= ath9k_hw_getchan_noise(ah
, chan
);
180 * Updates the survey statistics and returns the busy time since last
181 * update in %, if the measurement duration was long enough for the
182 * result to be useful, -1 otherwise.
184 static int ath_update_survey_stats(struct ath_softc
*sc
)
186 struct ath_hw
*ah
= sc
->sc_ah
;
187 struct ath_common
*common
= ath9k_hw_common(ah
);
188 int pos
= ah
->curchan
- &ah
->channels
[0];
189 struct survey_info
*survey
= &sc
->survey
[pos
];
190 struct ath_cycle_counters
*cc
= &common
->cc_survey
;
191 unsigned int div
= common
->clockrate
* 1000;
197 if (ah
->power_mode
== ATH9K_PM_AWAKE
)
198 ath_hw_cycle_counters_update(common
);
200 if (cc
->cycles
> 0) {
201 survey
->filled
|= SURVEY_INFO_CHANNEL_TIME
|
202 SURVEY_INFO_CHANNEL_TIME_BUSY
|
203 SURVEY_INFO_CHANNEL_TIME_RX
|
204 SURVEY_INFO_CHANNEL_TIME_TX
;
205 survey
->channel_time
+= cc
->cycles
/ div
;
206 survey
->channel_time_busy
+= cc
->rx_busy
/ div
;
207 survey
->channel_time_rx
+= cc
->rx_frame
/ div
;
208 survey
->channel_time_tx
+= cc
->tx_frame
/ div
;
211 if (cc
->cycles
< div
)
215 ret
= cc
->rx_busy
* 100 / cc
->cycles
;
217 memset(cc
, 0, sizeof(*cc
));
219 ath_update_survey_nf(sc
, pos
);
224 static void __ath_cancel_work(struct ath_softc
*sc
)
226 cancel_work_sync(&sc
->paprd_work
);
227 cancel_work_sync(&sc
->hw_check_work
);
228 cancel_delayed_work_sync(&sc
->tx_complete_work
);
229 cancel_delayed_work_sync(&sc
->hw_pll_work
);
232 static void ath_cancel_work(struct ath_softc
*sc
)
234 __ath_cancel_work(sc
);
235 cancel_work_sync(&sc
->hw_reset_work
);
238 static bool ath_prepare_reset(struct ath_softc
*sc
, bool retry_tx
, bool flush
)
240 struct ath_hw
*ah
= sc
->sc_ah
;
241 struct ath_common
*common
= ath9k_hw_common(ah
);
244 ieee80211_stop_queues(sc
->hw
);
246 sc
->hw_busy_count
= 0;
247 del_timer_sync(&common
->ani
.timer
);
248 del_timer_sync(&sc
->rx_poll_timer
);
250 ath9k_debug_samp_bb_mac(sc
);
251 ath9k_hw_disable_interrupts(ah
);
253 ret
= ath_drain_all_txq(sc
, retry_tx
);
255 if (!ath_stoprecv(sc
))
259 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
260 ath_rx_tasklet(sc
, 1, true);
261 ath_rx_tasklet(sc
, 1, false);
269 static bool ath_complete_reset(struct ath_softc
*sc
, bool start
)
271 struct ath_hw
*ah
= sc
->sc_ah
;
272 struct ath_common
*common
= ath9k_hw_common(ah
);
274 if (ath_startrecv(sc
) != 0) {
275 ath_err(common
, "Unable to restart recv logic\n");
279 ath9k_cmn_update_txpow(ah
, sc
->curtxpow
,
280 sc
->config
.txpowlimit
, &sc
->curtxpow
);
281 ath9k_hw_set_interrupts(ah
);
282 ath9k_hw_enable_interrupts(ah
);
284 if (!(sc
->sc_flags
& (SC_OP_OFFCHANNEL
)) && start
) {
285 if (sc
->sc_flags
& SC_OP_BEACONS
)
288 ieee80211_queue_delayed_work(sc
->hw
, &sc
->tx_complete_work
, 0);
289 ieee80211_queue_delayed_work(sc
->hw
, &sc
->hw_pll_work
, HZ
/2);
290 ath_start_rx_poll(sc
, 3);
291 if (!common
->disable_ani
)
292 ath_start_ani(common
);
295 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_ANT_DIV_COMB
) && sc
->ant_rx
!= 3) {
296 struct ath_hw_antcomb_conf div_ant_conf
;
299 ath9k_hw_antdiv_comb_conf_get(ah
, &div_ant_conf
);
302 lna_conf
= ATH_ANT_DIV_COMB_LNA1
;
304 lna_conf
= ATH_ANT_DIV_COMB_LNA2
;
305 div_ant_conf
.main_lna_conf
= lna_conf
;
306 div_ant_conf
.alt_lna_conf
= lna_conf
;
308 ath9k_hw_antdiv_comb_conf_set(ah
, &div_ant_conf
);
311 ieee80211_wake_queues(sc
->hw
);
316 static int ath_reset_internal(struct ath_softc
*sc
, struct ath9k_channel
*hchan
,
319 struct ath_hw
*ah
= sc
->sc_ah
;
320 struct ath_common
*common
= ath9k_hw_common(ah
);
321 struct ath9k_hw_cal_data
*caldata
= NULL
;
326 __ath_cancel_work(sc
);
328 spin_lock_bh(&sc
->sc_pcu_lock
);
330 if (!(sc
->sc_flags
& SC_OP_OFFCHANNEL
)) {
332 caldata
= &sc
->caldata
;
341 if (!ath_prepare_reset(sc
, retry_tx
, flush
))
344 ath_dbg(common
, CONFIG
, "Reset to %u MHz, HT40: %d fastcc: %d\n",
345 hchan
->channel
, IS_CHAN_HT40(hchan
), fastcc
);
347 r
= ath9k_hw_reset(ah
, hchan
, caldata
, fastcc
);
350 "Unable to reset channel, reset status %d\n", r
);
354 if (!ath_complete_reset(sc
, true))
358 spin_unlock_bh(&sc
->sc_pcu_lock
);
364 * Set/change channels. If the channel is really being changed, it's done
365 * by reseting the chip. To accomplish this we must first cleanup any pending
366 * DMA, then restart stuff.
368 static int ath_set_channel(struct ath_softc
*sc
, struct ieee80211_hw
*hw
,
369 struct ath9k_channel
*hchan
)
373 if (sc
->sc_flags
& SC_OP_INVALID
)
376 r
= ath_reset_internal(sc
, hchan
, false);
381 static void ath_paprd_activate(struct ath_softc
*sc
)
383 struct ath_hw
*ah
= sc
->sc_ah
;
384 struct ath9k_hw_cal_data
*caldata
= ah
->caldata
;
387 if (!caldata
|| !caldata
->paprd_done
)
391 ar9003_paprd_enable(ah
, false);
392 for (chain
= 0; chain
< AR9300_MAX_CHAINS
; chain
++) {
393 if (!(ah
->txchainmask
& BIT(chain
)))
396 ar9003_paprd_populate_single_table(ah
, caldata
, chain
);
399 ar9003_paprd_enable(ah
, true);
400 ath9k_ps_restore(sc
);
403 static bool ath_paprd_send_frame(struct ath_softc
*sc
, struct sk_buff
*skb
, int chain
)
405 struct ieee80211_hw
*hw
= sc
->hw
;
406 struct ieee80211_tx_info
*tx_info
= IEEE80211_SKB_CB(skb
);
407 struct ath_hw
*ah
= sc
->sc_ah
;
408 struct ath_common
*common
= ath9k_hw_common(ah
);
409 struct ath_tx_control txctl
;
412 memset(&txctl
, 0, sizeof(txctl
));
413 txctl
.txq
= sc
->tx
.txq_map
[WME_AC_BE
];
415 memset(tx_info
, 0, sizeof(*tx_info
));
416 tx_info
->band
= hw
->conf
.channel
->band
;
417 tx_info
->flags
|= IEEE80211_TX_CTL_NO_ACK
;
418 tx_info
->control
.rates
[0].idx
= 0;
419 tx_info
->control
.rates
[0].count
= 1;
420 tx_info
->control
.rates
[0].flags
= IEEE80211_TX_RC_MCS
;
421 tx_info
->control
.rates
[1].idx
= -1;
423 init_completion(&sc
->paprd_complete
);
424 txctl
.paprd
= BIT(chain
);
426 if (ath_tx_start(hw
, skb
, &txctl
) != 0) {
427 ath_dbg(common
, CALIBRATE
, "PAPRD TX failed\n");
428 dev_kfree_skb_any(skb
);
432 time_left
= wait_for_completion_timeout(&sc
->paprd_complete
,
433 msecs_to_jiffies(ATH_PAPRD_TIMEOUT
));
436 ath_dbg(common
, CALIBRATE
,
437 "Timeout waiting for paprd training on TX chain %d\n",
443 void ath_paprd_calibrate(struct work_struct
*work
)
445 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, paprd_work
);
446 struct ieee80211_hw
*hw
= sc
->hw
;
447 struct ath_hw
*ah
= sc
->sc_ah
;
448 struct ieee80211_hdr
*hdr
;
449 struct sk_buff
*skb
= NULL
;
450 struct ath9k_hw_cal_data
*caldata
= ah
->caldata
;
451 struct ath_common
*common
= ath9k_hw_common(ah
);
462 if (ar9003_paprd_init_table(ah
) < 0)
465 skb
= alloc_skb(len
, GFP_KERNEL
);
470 memset(skb
->data
, 0, len
);
471 hdr
= (struct ieee80211_hdr
*)skb
->data
;
472 ftype
= IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
;
473 hdr
->frame_control
= cpu_to_le16(ftype
);
474 hdr
->duration_id
= cpu_to_le16(10);
475 memcpy(hdr
->addr1
, hw
->wiphy
->perm_addr
, ETH_ALEN
);
476 memcpy(hdr
->addr2
, hw
->wiphy
->perm_addr
, ETH_ALEN
);
477 memcpy(hdr
->addr3
, hw
->wiphy
->perm_addr
, ETH_ALEN
);
479 for (chain
= 0; chain
< AR9300_MAX_CHAINS
; chain
++) {
480 if (!(ah
->txchainmask
& BIT(chain
)))
485 ath_dbg(common
, CALIBRATE
,
486 "Sending PAPRD frame for thermal measurement on chain %d\n",
488 if (!ath_paprd_send_frame(sc
, skb
, chain
))
491 ar9003_paprd_setup_gain_table(ah
, chain
);
493 ath_dbg(common
, CALIBRATE
,
494 "Sending PAPRD training frame on chain %d\n", chain
);
495 if (!ath_paprd_send_frame(sc
, skb
, chain
))
498 if (!ar9003_paprd_is_done(ah
)) {
499 ath_dbg(common
, CALIBRATE
,
500 "PAPRD not yet done on chain %d\n", chain
);
504 if (ar9003_paprd_create_curve(ah
, caldata
, chain
)) {
505 ath_dbg(common
, CALIBRATE
,
506 "PAPRD create curve failed on chain %d\n",
516 caldata
->paprd_done
= true;
517 ath_paprd_activate(sc
);
521 ath9k_ps_restore(sc
);
525 * This routine performs the periodic noise floor calibration function
526 * that is used to adjust and optimize the chip performance. This
527 * takes environmental changes (location, temperature) into account.
528 * When the task is complete, it reschedules itself depending on the
529 * appropriate interval that was calculated.
531 void ath_ani_calibrate(unsigned long data
)
533 struct ath_softc
*sc
= (struct ath_softc
*)data
;
534 struct ath_hw
*ah
= sc
->sc_ah
;
535 struct ath_common
*common
= ath9k_hw_common(ah
);
536 bool longcal
= false;
537 bool shortcal
= false;
538 bool aniflag
= false;
539 unsigned int timestamp
= jiffies_to_msecs(jiffies
);
540 u32 cal_interval
, short_cal_interval
, long_cal_interval
;
543 if (ah
->caldata
&& ah
->caldata
->nfcal_interference
)
544 long_cal_interval
= ATH_LONG_CALINTERVAL_INT
;
546 long_cal_interval
= ATH_LONG_CALINTERVAL
;
548 short_cal_interval
= (ah
->opmode
== NL80211_IFTYPE_AP
) ?
549 ATH_AP_SHORT_CALINTERVAL
: ATH_STA_SHORT_CALINTERVAL
;
551 /* Only calibrate if awake */
552 if (sc
->sc_ah
->power_mode
!= ATH9K_PM_AWAKE
)
557 /* Long calibration runs independently of short calibration. */
558 if ((timestamp
- common
->ani
.longcal_timer
) >= long_cal_interval
) {
560 common
->ani
.longcal_timer
= timestamp
;
563 /* Short calibration applies only while caldone is false */
564 if (!common
->ani
.caldone
) {
565 if ((timestamp
- common
->ani
.shortcal_timer
) >= short_cal_interval
) {
567 common
->ani
.shortcal_timer
= timestamp
;
568 common
->ani
.resetcal_timer
= timestamp
;
571 if ((timestamp
- common
->ani
.resetcal_timer
) >=
572 ATH_RESTART_CALINTERVAL
) {
573 common
->ani
.caldone
= ath9k_hw_reset_calvalid(ah
);
574 if (common
->ani
.caldone
)
575 common
->ani
.resetcal_timer
= timestamp
;
579 /* Verify whether we must check ANI */
580 if (sc
->sc_ah
->config
.enable_ani
581 && (timestamp
- common
->ani
.checkani_timer
) >=
582 ah
->config
.ani_poll_interval
) {
584 common
->ani
.checkani_timer
= timestamp
;
587 /* Call ANI routine if necessary */
589 spin_lock_irqsave(&common
->cc_lock
, flags
);
590 ath9k_hw_ani_monitor(ah
, ah
->curchan
);
591 ath_update_survey_stats(sc
);
592 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
595 /* Perform calibration if necessary */
596 if (longcal
|| shortcal
) {
597 common
->ani
.caldone
=
598 ath9k_hw_calibrate(ah
, ah
->curchan
,
599 ah
->rxchainmask
, longcal
);
603 "Calibration @%lu finished: %s %s %s, caldone: %s\n",
605 longcal
? "long" : "", shortcal
? "short" : "",
606 aniflag
? "ani" : "", common
->ani
.caldone
? "true" : "false");
608 ath9k_ps_restore(sc
);
612 * Set timer interval based on previous results.
613 * The interval must be the shortest necessary to satisfy ANI,
614 * short calibration and long calibration.
616 ath9k_debug_samp_bb_mac(sc
);
617 cal_interval
= ATH_LONG_CALINTERVAL
;
618 if (sc
->sc_ah
->config
.enable_ani
)
619 cal_interval
= min(cal_interval
,
620 (u32
)ah
->config
.ani_poll_interval
);
621 if (!common
->ani
.caldone
)
622 cal_interval
= min(cal_interval
, (u32
)short_cal_interval
);
624 mod_timer(&common
->ani
.timer
, jiffies
+ msecs_to_jiffies(cal_interval
));
625 if ((sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_PAPRD
) && ah
->caldata
) {
626 if (!ah
->caldata
->paprd_done
)
627 ieee80211_queue_work(sc
->hw
, &sc
->paprd_work
);
628 else if (!ah
->paprd_table_write_done
)
629 ath_paprd_activate(sc
);
633 static void ath_node_attach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
,
634 struct ieee80211_vif
*vif
)
637 an
= (struct ath_node
*)sta
->drv_priv
;
639 #ifdef CONFIG_ATH9K_DEBUGFS
640 spin_lock(&sc
->nodes_lock
);
641 list_add(&an
->list
, &sc
->nodes
);
642 spin_unlock(&sc
->nodes_lock
);
647 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
) {
648 ath_tx_node_init(sc
, an
);
649 an
->maxampdu
= 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR
+
650 sta
->ht_cap
.ampdu_factor
);
651 an
->mpdudensity
= parse_mpdudensity(sta
->ht_cap
.ampdu_density
);
655 static void ath_node_detach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
)
657 struct ath_node
*an
= (struct ath_node
*)sta
->drv_priv
;
659 #ifdef CONFIG_ATH9K_DEBUGFS
660 spin_lock(&sc
->nodes_lock
);
662 spin_unlock(&sc
->nodes_lock
);
666 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
667 ath_tx_node_cleanup(sc
, an
);
671 void ath9k_tasklet(unsigned long data
)
673 struct ath_softc
*sc
= (struct ath_softc
*)data
;
674 struct ath_hw
*ah
= sc
->sc_ah
;
675 struct ath_common
*common
= ath9k_hw_common(ah
);
677 u32 status
= sc
->intrstatus
;
681 spin_lock(&sc
->sc_pcu_lock
);
683 if ((status
& ATH9K_INT_FATAL
) ||
684 (status
& ATH9K_INT_BB_WATCHDOG
)) {
685 #ifdef CONFIG_ATH9K_DEBUGFS
686 enum ath_reset_type type
;
688 if (status
& ATH9K_INT_FATAL
)
689 type
= RESET_TYPE_FATAL_INT
;
691 type
= RESET_TYPE_BB_WATCHDOG
;
693 RESET_STAT_INC(sc
, type
);
695 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
699 if ((status
& ATH9K_INT_TSFOOR
) && sc
->ps_enabled
) {
701 * TSF sync does not look correct; remain awake to sync with
704 ath_dbg(common
, PS
, "TSFOOR - Sync with next Beacon\n");
705 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
| PS_BEACON_SYNC
;
708 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
709 rxmask
= (ATH9K_INT_RXHP
| ATH9K_INT_RXLP
| ATH9K_INT_RXEOL
|
712 rxmask
= (ATH9K_INT_RX
| ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
714 if (status
& rxmask
) {
715 /* Check for high priority Rx first */
716 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
717 (status
& ATH9K_INT_RXHP
))
718 ath_rx_tasklet(sc
, 0, true);
720 ath_rx_tasklet(sc
, 0, false);
723 if (status
& ATH9K_INT_TX
) {
724 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
725 ath_tx_edma_tasklet(sc
);
730 ath9k_btcoex_handle_interrupt(sc
, status
);
733 /* re-enable hardware interrupt */
734 ath9k_hw_enable_interrupts(ah
);
736 spin_unlock(&sc
->sc_pcu_lock
);
737 ath9k_ps_restore(sc
);
740 irqreturn_t
ath_isr(int irq
, void *dev
)
742 #define SCHED_INTR ( \
744 ATH9K_INT_BB_WATCHDOG | \
754 ATH9K_INT_GENTIMER | \
757 struct ath_softc
*sc
= dev
;
758 struct ath_hw
*ah
= sc
->sc_ah
;
759 struct ath_common
*common
= ath9k_hw_common(ah
);
760 enum ath9k_int status
;
764 * The hardware is not ready/present, don't
765 * touch anything. Note this can happen early
766 * on if the IRQ is shared.
768 if (sc
->sc_flags
& SC_OP_INVALID
)
772 /* shared irq, not for us */
774 if (!ath9k_hw_intrpend(ah
))
778 * Figure out the reason(s) for the interrupt. Note
779 * that the hal returns a pseudo-ISR that may include
780 * bits we haven't explicitly enabled so we mask the
781 * value to insure we only process bits we requested.
783 ath9k_hw_getisr(ah
, &status
); /* NB: clears ISR too */
784 status
&= ah
->imask
; /* discard unasked-for bits */
787 * If there are no status bits set, then this interrupt was not
788 * for me (should have been caught above).
793 /* Cache the status */
794 sc
->intrstatus
= status
;
796 if (status
& SCHED_INTR
)
800 * If a FATAL or RXORN interrupt is received, we have to reset the
803 if ((status
& ATH9K_INT_FATAL
) || ((status
& ATH9K_INT_RXORN
) &&
804 !(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)))
807 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
808 (status
& ATH9K_INT_BB_WATCHDOG
)) {
810 spin_lock(&common
->cc_lock
);
811 ath_hw_cycle_counters_update(common
);
812 ar9003_hw_bb_watchdog_dbg_info(ah
);
813 spin_unlock(&common
->cc_lock
);
818 if (status
& ATH9K_INT_SWBA
)
819 tasklet_schedule(&sc
->bcon_tasklet
);
821 if (status
& ATH9K_INT_TXURN
)
822 ath9k_hw_updatetxtriglevel(ah
, true);
824 if (status
& ATH9K_INT_RXEOL
) {
825 ah
->imask
&= ~(ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
826 ath9k_hw_set_interrupts(ah
);
829 if (status
& ATH9K_INT_MIB
) {
831 * Disable interrupts until we service the MIB
832 * interrupt; otherwise it will continue to
835 ath9k_hw_disable_interrupts(ah
);
837 * Let the hal handle the event. We assume
838 * it will clear whatever condition caused
841 spin_lock(&common
->cc_lock
);
842 ath9k_hw_proc_mib_event(ah
);
843 spin_unlock(&common
->cc_lock
);
844 ath9k_hw_enable_interrupts(ah
);
847 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
848 if (status
& ATH9K_INT_TIM_TIMER
) {
849 if (ATH_DBG_WARN_ON_ONCE(sc
->ps_idle
))
851 /* Clear RxAbort bit so that we can
853 ath9k_setpower(sc
, ATH9K_PM_AWAKE
);
854 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
855 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
;
860 ath_debug_stat_interrupt(sc
, status
);
863 /* turn off every interrupt */
864 ath9k_hw_disable_interrupts(ah
);
865 tasklet_schedule(&sc
->intr_tq
);
873 static int ath_reset(struct ath_softc
*sc
, bool retry_tx
)
879 r
= ath_reset_internal(sc
, NULL
, retry_tx
);
883 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
884 if (ATH_TXQ_SETUP(sc
, i
)) {
885 spin_lock_bh(&sc
->tx
.txq
[i
].axq_lock
);
886 ath_txq_schedule(sc
, &sc
->tx
.txq
[i
]);
887 spin_unlock_bh(&sc
->tx
.txq
[i
].axq_lock
);
892 ath9k_ps_restore(sc
);
897 void ath_reset_work(struct work_struct
*work
)
899 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, hw_reset_work
);
904 void ath_hw_check(struct work_struct
*work
)
906 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, hw_check_work
);
907 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
910 u8 is_alive
, nbeacon
= 1;
913 is_alive
= ath9k_hw_check_alive(sc
->sc_ah
);
915 if (is_alive
&& !AR_SREV_9300(sc
->sc_ah
))
917 else if (!is_alive
&& AR_SREV_9300(sc
->sc_ah
)) {
918 ath_dbg(common
, RESET
,
919 "DCU stuck is detected. Schedule chip reset\n");
920 RESET_STAT_INC(sc
, RESET_TYPE_MAC_HANG
);
924 spin_lock_irqsave(&common
->cc_lock
, flags
);
925 busy
= ath_update_survey_stats(sc
);
926 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
928 ath_dbg(common
, RESET
, "Possible baseband hang, busy=%d (try %d)\n",
929 busy
, sc
->hw_busy_count
+ 1);
931 if (++sc
->hw_busy_count
>= 3) {
932 RESET_STAT_INC(sc
, RESET_TYPE_BB_HANG
);
935 } else if (busy
>= 0) {
936 sc
->hw_busy_count
= 0;
940 ath_start_rx_poll(sc
, nbeacon
);
944 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
946 ath9k_ps_restore(sc
);
949 static void ath_hw_pll_rx_hang_check(struct ath_softc
*sc
, u32 pll_sqsum
)
952 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
954 if (pll_sqsum
>= 0x40000) {
957 /* Rx is hung for more than 500ms. Reset it */
958 ath_dbg(common
, RESET
, "Possible RX hang, resetting\n");
959 RESET_STAT_INC(sc
, RESET_TYPE_PLL_HANG
);
960 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
967 void ath_hw_pll_work(struct work_struct
*work
)
969 struct ath_softc
*sc
= container_of(work
, struct ath_softc
,
973 if (AR_SREV_9485(sc
->sc_ah
)) {
976 pll_sqsum
= ar9003_get_pll_sqsum_dvc(sc
->sc_ah
);
977 ath9k_ps_restore(sc
);
979 ath_hw_pll_rx_hang_check(sc
, pll_sqsum
);
981 ieee80211_queue_delayed_work(sc
->hw
, &sc
->hw_pll_work
, HZ
/5);
985 /**********************/
986 /* mac80211 callbacks */
987 /**********************/
989 static int ath9k_start(struct ieee80211_hw
*hw
)
991 struct ath_softc
*sc
= hw
->priv
;
992 struct ath_hw
*ah
= sc
->sc_ah
;
993 struct ath_common
*common
= ath9k_hw_common(ah
);
994 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
995 struct ath9k_channel
*init_channel
;
998 ath_dbg(common
, CONFIG
,
999 "Starting driver with initial channel: %d MHz\n",
1000 curchan
->center_freq
);
1002 ath9k_ps_wakeup(sc
);
1003 mutex_lock(&sc
->mutex
);
1005 init_channel
= ath9k_cmn_get_curchannel(hw
, ah
);
1007 /* Reset SERDES registers */
1008 ath9k_hw_configpcipowersave(ah
, false);
1011 * The basic interface to setting the hardware in a good
1012 * state is ``reset''. On return the hardware is known to
1013 * be powered up and with interrupts disabled. This must
1014 * be followed by initialization of the appropriate bits
1015 * and then setup of the interrupt mask.
1017 spin_lock_bh(&sc
->sc_pcu_lock
);
1019 atomic_set(&ah
->intr_ref_cnt
, -1);
1021 r
= ath9k_hw_reset(ah
, init_channel
, ah
->caldata
, false);
1024 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
1025 r
, curchan
->center_freq
);
1026 spin_unlock_bh(&sc
->sc_pcu_lock
);
1030 /* Setup our intr mask. */
1031 ah
->imask
= ATH9K_INT_TX
| ATH9K_INT_RXEOL
|
1032 ATH9K_INT_RXORN
| ATH9K_INT_FATAL
|
1035 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
1036 ah
->imask
|= ATH9K_INT_RXHP
|
1038 ATH9K_INT_BB_WATCHDOG
;
1040 ah
->imask
|= ATH9K_INT_RX
;
1042 ah
->imask
|= ATH9K_INT_GTT
;
1044 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
1045 ah
->imask
|= ATH9K_INT_CST
;
1047 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_MCI
)
1048 ah
->imask
|= ATH9K_INT_MCI
;
1050 sc
->sc_flags
&= ~SC_OP_INVALID
;
1051 sc
->sc_ah
->is_monitoring
= false;
1053 if (!ath_complete_reset(sc
, false)) {
1055 spin_unlock_bh(&sc
->sc_pcu_lock
);
1059 if (ah
->led_pin
>= 0) {
1060 ath9k_hw_cfg_output(ah
, ah
->led_pin
,
1061 AR_GPIO_OUTPUT_MUX_AS_OUTPUT
);
1062 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 0);
1066 * Reset key cache to sane defaults (all entries cleared) instead of
1067 * semi-random values after suspend/resume.
1069 ath9k_cmn_init_crypto(sc
->sc_ah
);
1071 spin_unlock_bh(&sc
->sc_pcu_lock
);
1073 ath9k_start_btcoex(sc
);
1075 if (ah
->caps
.pcie_lcr_extsync_en
&& common
->bus_ops
->extn_synch_en
)
1076 common
->bus_ops
->extn_synch_en(common
);
1079 mutex_unlock(&sc
->mutex
);
1081 ath9k_ps_restore(sc
);
1086 static void ath9k_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
1088 struct ath_softc
*sc
= hw
->priv
;
1089 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1090 struct ath_tx_control txctl
;
1091 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
1093 if (sc
->ps_enabled
) {
1095 * mac80211 does not set PM field for normal data frames, so we
1096 * need to update that based on the current PS mode.
1098 if (ieee80211_is_data(hdr
->frame_control
) &&
1099 !ieee80211_is_nullfunc(hdr
->frame_control
) &&
1100 !ieee80211_has_pm(hdr
->frame_control
)) {
1102 "Add PM=1 for a TX frame while in PS mode\n");
1103 hdr
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
1107 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_NETWORK_SLEEP
)) {
1109 * We are using PS-Poll and mac80211 can request TX while in
1110 * power save mode. Need to wake up hardware for the TX to be
1111 * completed and if needed, also for RX of buffered frames.
1113 ath9k_ps_wakeup(sc
);
1114 if (!(sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
1115 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
1116 if (ieee80211_is_pspoll(hdr
->frame_control
)) {
1118 "Sending PS-Poll to pick a buffered frame\n");
1119 sc
->ps_flags
|= PS_WAIT_FOR_PSPOLL_DATA
;
1121 ath_dbg(common
, PS
, "Wake up to complete TX\n");
1122 sc
->ps_flags
|= PS_WAIT_FOR_TX_ACK
;
1125 * The actual restore operation will happen only after
1126 * the ps_flags bit is cleared. We are just dropping
1127 * the ps_usecount here.
1129 ath9k_ps_restore(sc
);
1133 * Cannot tx while the hardware is in full sleep, it first needs a full
1134 * chip reset to recover from that
1136 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_FULL_SLEEP
)) {
1137 ath_err(common
, "TX while HW is in FULL_SLEEP mode\n");
1141 memset(&txctl
, 0, sizeof(struct ath_tx_control
));
1142 txctl
.txq
= sc
->tx
.txq_map
[skb_get_queue_mapping(skb
)];
1144 ath_dbg(common
, XMIT
, "transmitting packet, skb: %p\n", skb
);
1146 if (ath_tx_start(hw
, skb
, &txctl
) != 0) {
1147 ath_dbg(common
, XMIT
, "TX failed\n");
1148 TX_STAT_INC(txctl
.txq
->axq_qnum
, txfailed
);
1154 dev_kfree_skb_any(skb
);
1157 static void ath9k_stop(struct ieee80211_hw
*hw
)
1159 struct ath_softc
*sc
= hw
->priv
;
1160 struct ath_hw
*ah
= sc
->sc_ah
;
1161 struct ath_common
*common
= ath9k_hw_common(ah
);
1164 mutex_lock(&sc
->mutex
);
1166 ath_cancel_work(sc
);
1167 del_timer_sync(&sc
->rx_poll_timer
);
1169 if (sc
->sc_flags
& SC_OP_INVALID
) {
1170 ath_dbg(common
, ANY
, "Device not present\n");
1171 mutex_unlock(&sc
->mutex
);
1175 /* Ensure HW is awake when we try to shut it down. */
1176 ath9k_ps_wakeup(sc
);
1178 ath9k_stop_btcoex(sc
);
1180 spin_lock_bh(&sc
->sc_pcu_lock
);
1182 /* prevent tasklets to enable interrupts once we disable them */
1183 ah
->imask
&= ~ATH9K_INT_GLOBAL
;
1185 /* make sure h/w will not generate any interrupt
1186 * before setting the invalid flag. */
1187 ath9k_hw_disable_interrupts(ah
);
1189 spin_unlock_bh(&sc
->sc_pcu_lock
);
1191 /* we can now sync irq and kill any running tasklets, since we already
1192 * disabled interrupts and not holding a spin lock */
1193 synchronize_irq(sc
->irq
);
1194 tasklet_kill(&sc
->intr_tq
);
1195 tasklet_kill(&sc
->bcon_tasklet
);
1197 prev_idle
= sc
->ps_idle
;
1200 spin_lock_bh(&sc
->sc_pcu_lock
);
1202 if (ah
->led_pin
>= 0) {
1203 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 1);
1204 ath9k_hw_cfg_gpio_input(ah
, ah
->led_pin
);
1207 ath_prepare_reset(sc
, false, true);
1210 dev_kfree_skb_any(sc
->rx
.frag
);
1215 ah
->curchan
= ath9k_cmn_get_curchannel(hw
, ah
);
1217 ath9k_hw_reset(ah
, ah
->curchan
, ah
->caldata
, false);
1218 ath9k_hw_phy_disable(ah
);
1220 ath9k_hw_configpcipowersave(ah
, true);
1222 spin_unlock_bh(&sc
->sc_pcu_lock
);
1224 ath9k_ps_restore(sc
);
1226 sc
->sc_flags
|= SC_OP_INVALID
;
1227 sc
->ps_idle
= prev_idle
;
1229 mutex_unlock(&sc
->mutex
);
1231 ath_dbg(common
, CONFIG
, "Driver halt\n");
1234 bool ath9k_uses_beacons(int type
)
1237 case NL80211_IFTYPE_AP
:
1238 case NL80211_IFTYPE_ADHOC
:
1239 case NL80211_IFTYPE_MESH_POINT
:
1246 static void ath9k_reclaim_beacon(struct ath_softc
*sc
,
1247 struct ieee80211_vif
*vif
)
1249 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1251 ath9k_set_beaconing_status(sc
, false);
1252 ath_beacon_return(sc
, avp
);
1253 ath9k_set_beaconing_status(sc
, true);
1256 static void ath9k_vif_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
1258 struct ath9k_vif_iter_data
*iter_data
= data
;
1261 if (iter_data
->hw_macaddr
)
1262 for (i
= 0; i
< ETH_ALEN
; i
++)
1263 iter_data
->mask
[i
] &=
1264 ~(iter_data
->hw_macaddr
[i
] ^ mac
[i
]);
1266 switch (vif
->type
) {
1267 case NL80211_IFTYPE_AP
:
1270 case NL80211_IFTYPE_STATION
:
1271 iter_data
->nstations
++;
1273 case NL80211_IFTYPE_ADHOC
:
1274 iter_data
->nadhocs
++;
1276 case NL80211_IFTYPE_MESH_POINT
:
1277 iter_data
->nmeshes
++;
1279 case NL80211_IFTYPE_WDS
:
1287 /* Called with sc->mutex held. */
1288 void ath9k_calculate_iter_data(struct ieee80211_hw
*hw
,
1289 struct ieee80211_vif
*vif
,
1290 struct ath9k_vif_iter_data
*iter_data
)
1292 struct ath_softc
*sc
= hw
->priv
;
1293 struct ath_hw
*ah
= sc
->sc_ah
;
1294 struct ath_common
*common
= ath9k_hw_common(ah
);
1297 * Use the hardware MAC address as reference, the hardware uses it
1298 * together with the BSSID mask when matching addresses.
1300 memset(iter_data
, 0, sizeof(*iter_data
));
1301 iter_data
->hw_macaddr
= common
->macaddr
;
1302 memset(&iter_data
->mask
, 0xff, ETH_ALEN
);
1305 ath9k_vif_iter(iter_data
, vif
->addr
, vif
);
1307 /* Get list of all active MAC addresses */
1308 ieee80211_iterate_active_interfaces_atomic(sc
->hw
, ath9k_vif_iter
,
1312 /* Called with sc->mutex held. */
1313 static void ath9k_calculate_summary_state(struct ieee80211_hw
*hw
,
1314 struct ieee80211_vif
*vif
)
1316 struct ath_softc
*sc
= hw
->priv
;
1317 struct ath_hw
*ah
= sc
->sc_ah
;
1318 struct ath_common
*common
= ath9k_hw_common(ah
);
1319 struct ath9k_vif_iter_data iter_data
;
1321 ath9k_calculate_iter_data(hw
, vif
, &iter_data
);
1323 /* Set BSSID mask. */
1324 memcpy(common
->bssidmask
, iter_data
.mask
, ETH_ALEN
);
1325 ath_hw_setbssidmask(common
);
1327 /* Set op-mode & TSF */
1328 if (iter_data
.naps
> 0) {
1329 ath9k_hw_set_tsfadjust(ah
, 1);
1330 sc
->sc_flags
|= SC_OP_TSF_RESET
;
1331 ah
->opmode
= NL80211_IFTYPE_AP
;
1333 ath9k_hw_set_tsfadjust(ah
, 0);
1334 sc
->sc_flags
&= ~SC_OP_TSF_RESET
;
1336 if (iter_data
.nmeshes
)
1337 ah
->opmode
= NL80211_IFTYPE_MESH_POINT
;
1338 else if (iter_data
.nwds
)
1339 ah
->opmode
= NL80211_IFTYPE_AP
;
1340 else if (iter_data
.nadhocs
)
1341 ah
->opmode
= NL80211_IFTYPE_ADHOC
;
1343 ah
->opmode
= NL80211_IFTYPE_STATION
;
1347 * Enable MIB interrupts when there are hardware phy counters.
1349 if ((iter_data
.nstations
+ iter_data
.nadhocs
+ iter_data
.nmeshes
) > 0) {
1350 if (ah
->config
.enable_ani
)
1351 ah
->imask
|= ATH9K_INT_MIB
;
1352 ah
->imask
|= ATH9K_INT_TSFOOR
;
1354 ah
->imask
&= ~ATH9K_INT_MIB
;
1355 ah
->imask
&= ~ATH9K_INT_TSFOOR
;
1358 ath9k_hw_set_interrupts(ah
);
1361 if (iter_data
.naps
> 0) {
1362 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
1364 if (!common
->disable_ani
) {
1365 sc
->sc_flags
|= SC_OP_ANI_RUN
;
1366 ath_start_ani(common
);
1370 sc
->sc_flags
&= ~SC_OP_ANI_RUN
;
1371 del_timer_sync(&common
->ani
.timer
);
1375 /* Called with sc->mutex held, vif counts set up properly. */
1376 static void ath9k_do_vif_add_setup(struct ieee80211_hw
*hw
,
1377 struct ieee80211_vif
*vif
)
1379 struct ath_softc
*sc
= hw
->priv
;
1381 ath9k_calculate_summary_state(hw
, vif
);
1383 if (ath9k_uses_beacons(vif
->type
)) {
1384 /* Reserve a beacon slot for the vif */
1385 ath9k_set_beaconing_status(sc
, false);
1386 ath_beacon_alloc(sc
, vif
);
1387 ath9k_set_beaconing_status(sc
, true);
1391 void ath_start_rx_poll(struct ath_softc
*sc
, u8 nbeacon
)
1393 if (!AR_SREV_9300(sc
->sc_ah
))
1396 if (!(sc
->sc_flags
& SC_OP_PRIM_STA_VIF
))
1399 mod_timer(&sc
->rx_poll_timer
, jiffies
+ msecs_to_jiffies
1400 (nbeacon
* sc
->cur_beacon_conf
.beacon_interval
));
1403 void ath_rx_poll(unsigned long data
)
1405 struct ath_softc
*sc
= (struct ath_softc
*)data
;
1407 ieee80211_queue_work(sc
->hw
, &sc
->hw_check_work
);
1410 static int ath9k_add_interface(struct ieee80211_hw
*hw
,
1411 struct ieee80211_vif
*vif
)
1413 struct ath_softc
*sc
= hw
->priv
;
1414 struct ath_hw
*ah
= sc
->sc_ah
;
1415 struct ath_common
*common
= ath9k_hw_common(ah
);
1418 ath9k_ps_wakeup(sc
);
1419 mutex_lock(&sc
->mutex
);
1421 switch (vif
->type
) {
1422 case NL80211_IFTYPE_STATION
:
1423 case NL80211_IFTYPE_WDS
:
1424 case NL80211_IFTYPE_ADHOC
:
1425 case NL80211_IFTYPE_AP
:
1426 case NL80211_IFTYPE_MESH_POINT
:
1429 ath_err(common
, "Interface type %d not yet supported\n",
1435 if (ath9k_uses_beacons(vif
->type
)) {
1436 if (sc
->nbcnvifs
>= ATH_BCBUF
) {
1437 ath_err(common
, "Not enough beacon buffers when adding"
1438 " new interface of type: %i\n",
1445 if ((ah
->opmode
== NL80211_IFTYPE_ADHOC
) ||
1446 ((vif
->type
== NL80211_IFTYPE_ADHOC
) &&
1448 ath_err(common
, "Cannot create ADHOC interface when other"
1449 " interfaces already exist.\n");
1454 ath_dbg(common
, CONFIG
, "Attach a VIF of type: %d\n", vif
->type
);
1458 ath9k_do_vif_add_setup(hw
, vif
);
1460 mutex_unlock(&sc
->mutex
);
1461 ath9k_ps_restore(sc
);
1465 static int ath9k_change_interface(struct ieee80211_hw
*hw
,
1466 struct ieee80211_vif
*vif
,
1467 enum nl80211_iftype new_type
,
1470 struct ath_softc
*sc
= hw
->priv
;
1471 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1474 ath_dbg(common
, CONFIG
, "Change Interface\n");
1475 mutex_lock(&sc
->mutex
);
1476 ath9k_ps_wakeup(sc
);
1478 /* See if new interface type is valid. */
1479 if ((new_type
== NL80211_IFTYPE_ADHOC
) &&
1481 ath_err(common
, "When using ADHOC, it must be the only"
1487 if (ath9k_uses_beacons(new_type
) &&
1488 !ath9k_uses_beacons(vif
->type
)) {
1489 if (sc
->nbcnvifs
>= ATH_BCBUF
) {
1490 ath_err(common
, "No beacon slot available\n");
1496 /* Clean up old vif stuff */
1497 if (ath9k_uses_beacons(vif
->type
))
1498 ath9k_reclaim_beacon(sc
, vif
);
1500 /* Add new settings */
1501 vif
->type
= new_type
;
1504 ath9k_do_vif_add_setup(hw
, vif
);
1506 ath9k_ps_restore(sc
);
1507 mutex_unlock(&sc
->mutex
);
1511 static void ath9k_remove_interface(struct ieee80211_hw
*hw
,
1512 struct ieee80211_vif
*vif
)
1514 struct ath_softc
*sc
= hw
->priv
;
1515 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1517 ath_dbg(common
, CONFIG
, "Detach Interface\n");
1519 ath9k_ps_wakeup(sc
);
1520 mutex_lock(&sc
->mutex
);
1524 /* Reclaim beacon resources */
1525 if (ath9k_uses_beacons(vif
->type
))
1526 ath9k_reclaim_beacon(sc
, vif
);
1528 ath9k_calculate_summary_state(hw
, NULL
);
1530 mutex_unlock(&sc
->mutex
);
1531 ath9k_ps_restore(sc
);
1534 static void ath9k_enable_ps(struct ath_softc
*sc
)
1536 struct ath_hw
*ah
= sc
->sc_ah
;
1537 struct ath_common
*common
= ath9k_hw_common(ah
);
1539 sc
->ps_enabled
= true;
1540 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1541 if ((ah
->imask
& ATH9K_INT_TIM_TIMER
) == 0) {
1542 ah
->imask
|= ATH9K_INT_TIM_TIMER
;
1543 ath9k_hw_set_interrupts(ah
);
1545 ath9k_hw_setrxabort(ah
, 1);
1547 ath_dbg(common
, PS
, "PowerSave enabled\n");
1550 static void ath9k_disable_ps(struct ath_softc
*sc
)
1552 struct ath_hw
*ah
= sc
->sc_ah
;
1553 struct ath_common
*common
= ath9k_hw_common(ah
);
1555 sc
->ps_enabled
= false;
1556 ath9k_hw_setpower(ah
, ATH9K_PM_AWAKE
);
1557 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1558 ath9k_hw_setrxabort(ah
, 0);
1559 sc
->ps_flags
&= ~(PS_WAIT_FOR_BEACON
|
1561 PS_WAIT_FOR_PSPOLL_DATA
|
1562 PS_WAIT_FOR_TX_ACK
);
1563 if (ah
->imask
& ATH9K_INT_TIM_TIMER
) {
1564 ah
->imask
&= ~ATH9K_INT_TIM_TIMER
;
1565 ath9k_hw_set_interrupts(ah
);
1568 ath_dbg(common
, PS
, "PowerSave disabled\n");
1571 static int ath9k_config(struct ieee80211_hw
*hw
, u32 changed
)
1573 struct ath_softc
*sc
= hw
->priv
;
1574 struct ath_hw
*ah
= sc
->sc_ah
;
1575 struct ath_common
*common
= ath9k_hw_common(ah
);
1576 struct ieee80211_conf
*conf
= &hw
->conf
;
1577 bool reset_channel
= false;
1579 ath9k_ps_wakeup(sc
);
1580 mutex_lock(&sc
->mutex
);
1582 if (changed
& IEEE80211_CONF_CHANGE_IDLE
) {
1583 sc
->ps_idle
= !!(conf
->flags
& IEEE80211_CONF_IDLE
);
1585 ath_cancel_work(sc
);
1588 * The chip needs a reset to properly wake up from
1591 reset_channel
= ah
->chip_fullsleep
;
1595 * We just prepare to enable PS. We have to wait until our AP has
1596 * ACK'd our null data frame to disable RX otherwise we'll ignore
1597 * those ACKs and end up retransmitting the same null data frames.
1598 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1600 if (changed
& IEEE80211_CONF_CHANGE_PS
) {
1601 unsigned long flags
;
1602 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
1603 if (conf
->flags
& IEEE80211_CONF_PS
)
1604 ath9k_enable_ps(sc
);
1606 ath9k_disable_ps(sc
);
1607 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
1610 if (changed
& IEEE80211_CONF_CHANGE_MONITOR
) {
1611 if (conf
->flags
& IEEE80211_CONF_MONITOR
) {
1612 ath_dbg(common
, CONFIG
, "Monitor mode is enabled\n");
1613 sc
->sc_ah
->is_monitoring
= true;
1615 ath_dbg(common
, CONFIG
, "Monitor mode is disabled\n");
1616 sc
->sc_ah
->is_monitoring
= false;
1620 if ((changed
& IEEE80211_CONF_CHANGE_CHANNEL
) || reset_channel
) {
1621 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
1622 int pos
= curchan
->hw_value
;
1624 unsigned long flags
;
1627 old_pos
= ah
->curchan
- &ah
->channels
[0];
1629 if (hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
)
1630 sc
->sc_flags
|= SC_OP_OFFCHANNEL
;
1632 sc
->sc_flags
&= ~SC_OP_OFFCHANNEL
;
1634 ath_dbg(common
, CONFIG
, "Set channel: %d MHz type: %d\n",
1635 curchan
->center_freq
, conf
->channel_type
);
1637 /* update survey stats for the old channel before switching */
1638 spin_lock_irqsave(&common
->cc_lock
, flags
);
1639 ath_update_survey_stats(sc
);
1640 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1643 * Preserve the current channel values, before updating
1646 if (ah
->curchan
&& (old_pos
== pos
))
1647 ath9k_hw_getnf(ah
, ah
->curchan
);
1649 ath9k_cmn_update_ichannel(&sc
->sc_ah
->channels
[pos
],
1650 curchan
, conf
->channel_type
);
1653 * If the operating channel changes, change the survey in-use flags
1655 * Reset the survey data for the new channel, unless we're switching
1656 * back to the operating channel from an off-channel operation.
1658 if (!(hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
) &&
1659 sc
->cur_survey
!= &sc
->survey
[pos
]) {
1662 sc
->cur_survey
->filled
&= ~SURVEY_INFO_IN_USE
;
1664 sc
->cur_survey
= &sc
->survey
[pos
];
1666 memset(sc
->cur_survey
, 0, sizeof(struct survey_info
));
1667 sc
->cur_survey
->filled
|= SURVEY_INFO_IN_USE
;
1668 } else if (!(sc
->survey
[pos
].filled
& SURVEY_INFO_IN_USE
)) {
1669 memset(&sc
->survey
[pos
], 0, sizeof(struct survey_info
));
1672 if (ath_set_channel(sc
, hw
, &sc
->sc_ah
->channels
[pos
]) < 0) {
1673 ath_err(common
, "Unable to set channel\n");
1674 mutex_unlock(&sc
->mutex
);
1679 * The most recent snapshot of channel->noisefloor for the old
1680 * channel is only available after the hardware reset. Copy it to
1681 * the survey stats now.
1684 ath_update_survey_nf(sc
, old_pos
);
1687 if (changed
& IEEE80211_CONF_CHANGE_POWER
) {
1688 ath_dbg(common
, CONFIG
, "Set power: %d\n", conf
->power_level
);
1689 sc
->config
.txpowlimit
= 2 * conf
->power_level
;
1690 ath9k_cmn_update_txpow(ah
, sc
->curtxpow
,
1691 sc
->config
.txpowlimit
, &sc
->curtxpow
);
1694 mutex_unlock(&sc
->mutex
);
1695 ath9k_ps_restore(sc
);
1700 #define SUPPORTED_FILTERS \
1701 (FIF_PROMISC_IN_BSS | \
1706 FIF_BCN_PRBRESP_PROMISC | \
1710 /* FIXME: sc->sc_full_reset ? */
1711 static void ath9k_configure_filter(struct ieee80211_hw
*hw
,
1712 unsigned int changed_flags
,
1713 unsigned int *total_flags
,
1716 struct ath_softc
*sc
= hw
->priv
;
1719 changed_flags
&= SUPPORTED_FILTERS
;
1720 *total_flags
&= SUPPORTED_FILTERS
;
1722 sc
->rx
.rxfilter
= *total_flags
;
1723 ath9k_ps_wakeup(sc
);
1724 rfilt
= ath_calcrxfilter(sc
);
1725 ath9k_hw_setrxfilter(sc
->sc_ah
, rfilt
);
1726 ath9k_ps_restore(sc
);
1728 ath_dbg(ath9k_hw_common(sc
->sc_ah
), CONFIG
, "Set HW RX filter: 0x%x\n",
1732 static int ath9k_sta_add(struct ieee80211_hw
*hw
,
1733 struct ieee80211_vif
*vif
,
1734 struct ieee80211_sta
*sta
)
1736 struct ath_softc
*sc
= hw
->priv
;
1737 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1738 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1739 struct ieee80211_key_conf ps_key
= { };
1741 ath_node_attach(sc
, sta
, vif
);
1743 if (vif
->type
!= NL80211_IFTYPE_AP
&&
1744 vif
->type
!= NL80211_IFTYPE_AP_VLAN
)
1747 an
->ps_key
= ath_key_config(common
, vif
, sta
, &ps_key
);
1752 static void ath9k_del_ps_key(struct ath_softc
*sc
,
1753 struct ieee80211_vif
*vif
,
1754 struct ieee80211_sta
*sta
)
1756 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1757 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1758 struct ieee80211_key_conf ps_key
= { .hw_key_idx
= an
->ps_key
};
1763 ath_key_delete(common
, &ps_key
);
1766 static int ath9k_sta_remove(struct ieee80211_hw
*hw
,
1767 struct ieee80211_vif
*vif
,
1768 struct ieee80211_sta
*sta
)
1770 struct ath_softc
*sc
= hw
->priv
;
1772 ath9k_del_ps_key(sc
, vif
, sta
);
1773 ath_node_detach(sc
, sta
);
1778 static void ath9k_sta_notify(struct ieee80211_hw
*hw
,
1779 struct ieee80211_vif
*vif
,
1780 enum sta_notify_cmd cmd
,
1781 struct ieee80211_sta
*sta
)
1783 struct ath_softc
*sc
= hw
->priv
;
1784 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1786 if (!sta
->ht_cap
.ht_supported
)
1790 case STA_NOTIFY_SLEEP
:
1791 an
->sleeping
= true;
1792 ath_tx_aggr_sleep(sta
, sc
, an
);
1794 case STA_NOTIFY_AWAKE
:
1795 an
->sleeping
= false;
1796 ath_tx_aggr_wakeup(sc
, an
);
1801 static int ath9k_conf_tx(struct ieee80211_hw
*hw
,
1802 struct ieee80211_vif
*vif
, u16 queue
,
1803 const struct ieee80211_tx_queue_params
*params
)
1805 struct ath_softc
*sc
= hw
->priv
;
1806 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1807 struct ath_txq
*txq
;
1808 struct ath9k_tx_queue_info qi
;
1811 if (queue
>= WME_NUM_AC
)
1814 txq
= sc
->tx
.txq_map
[queue
];
1816 ath9k_ps_wakeup(sc
);
1817 mutex_lock(&sc
->mutex
);
1819 memset(&qi
, 0, sizeof(struct ath9k_tx_queue_info
));
1821 qi
.tqi_aifs
= params
->aifs
;
1822 qi
.tqi_cwmin
= params
->cw_min
;
1823 qi
.tqi_cwmax
= params
->cw_max
;
1824 qi
.tqi_burstTime
= params
->txop
;
1826 ath_dbg(common
, CONFIG
,
1827 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1828 queue
, txq
->axq_qnum
, params
->aifs
, params
->cw_min
,
1829 params
->cw_max
, params
->txop
);
1831 ret
= ath_txq_update(sc
, txq
->axq_qnum
, &qi
);
1833 ath_err(common
, "TXQ Update failed\n");
1835 if (sc
->sc_ah
->opmode
== NL80211_IFTYPE_ADHOC
)
1836 if (queue
== WME_AC_BE
&& !ret
)
1837 ath_beaconq_config(sc
);
1839 mutex_unlock(&sc
->mutex
);
1840 ath9k_ps_restore(sc
);
1845 static int ath9k_set_key(struct ieee80211_hw
*hw
,
1846 enum set_key_cmd cmd
,
1847 struct ieee80211_vif
*vif
,
1848 struct ieee80211_sta
*sta
,
1849 struct ieee80211_key_conf
*key
)
1851 struct ath_softc
*sc
= hw
->priv
;
1852 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1855 if (ath9k_modparam_nohwcrypt
)
1858 if ((vif
->type
== NL80211_IFTYPE_ADHOC
||
1859 vif
->type
== NL80211_IFTYPE_MESH_POINT
) &&
1860 (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
||
1861 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
) &&
1862 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
1864 * For now, disable hw crypto for the RSN IBSS group keys. This
1865 * could be optimized in the future to use a modified key cache
1866 * design to support per-STA RX GTK, but until that gets
1867 * implemented, use of software crypto for group addressed
1868 * frames is a acceptable to allow RSN IBSS to be used.
1873 mutex_lock(&sc
->mutex
);
1874 ath9k_ps_wakeup(sc
);
1875 ath_dbg(common
, CONFIG
, "Set HW Key\n");
1880 ath9k_del_ps_key(sc
, vif
, sta
);
1882 ret
= ath_key_config(common
, vif
, sta
, key
);
1884 key
->hw_key_idx
= ret
;
1885 /* push IV and Michael MIC generation to stack */
1886 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
1887 if (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
)
1888 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
1889 if (sc
->sc_ah
->sw_mgmt_crypto
&&
1890 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
)
1891 key
->flags
|= IEEE80211_KEY_FLAG_SW_MGMT
;
1896 ath_key_delete(common
, key
);
1902 ath9k_ps_restore(sc
);
1903 mutex_unlock(&sc
->mutex
);
1907 static void ath9k_bss_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
1909 struct ath_softc
*sc
= data
;
1910 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1911 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1912 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1915 * Skip iteration if primary station vif's bss info
1918 if (sc
->sc_flags
& SC_OP_PRIM_STA_VIF
)
1921 if (bss_conf
->assoc
) {
1922 sc
->sc_flags
|= SC_OP_PRIM_STA_VIF
;
1923 avp
->primary_sta_vif
= true;
1924 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
1925 common
->curaid
= bss_conf
->aid
;
1926 ath9k_hw_write_associd(sc
->sc_ah
);
1927 ath_dbg(common
, CONFIG
, "Bss Info ASSOC %d, bssid: %pM\n",
1928 bss_conf
->aid
, common
->curbssid
);
1929 ath_beacon_config(sc
, vif
);
1931 * Request a re-configuration of Beacon related timers
1932 * on the receipt of the first Beacon frame (i.e.,
1933 * after time sync with the AP).
1935 sc
->ps_flags
|= PS_BEACON_SYNC
| PS_WAIT_FOR_BEACON
;
1936 /* Reset rssi stats */
1937 sc
->last_rssi
= ATH_RSSI_DUMMY_MARKER
;
1938 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
1940 ath_start_rx_poll(sc
, 3);
1942 if (!common
->disable_ani
) {
1943 sc
->sc_flags
|= SC_OP_ANI_RUN
;
1944 ath_start_ani(common
);
1950 static void ath9k_config_bss(struct ath_softc
*sc
, struct ieee80211_vif
*vif
)
1952 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1953 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1954 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1956 if (sc
->sc_ah
->opmode
!= NL80211_IFTYPE_STATION
)
1959 /* Reconfigure bss info */
1960 if (avp
->primary_sta_vif
&& !bss_conf
->assoc
) {
1961 ath_dbg(common
, CONFIG
, "Bss Info DISASSOC %d, bssid %pM\n",
1962 common
->curaid
, common
->curbssid
);
1963 sc
->sc_flags
&= ~(SC_OP_PRIM_STA_VIF
| SC_OP_BEACONS
);
1964 avp
->primary_sta_vif
= false;
1965 memset(common
->curbssid
, 0, ETH_ALEN
);
1969 ieee80211_iterate_active_interfaces_atomic(
1970 sc
->hw
, ath9k_bss_iter
, sc
);
1973 * None of station vifs are associated.
1976 if (!(sc
->sc_flags
& SC_OP_PRIM_STA_VIF
)) {
1977 ath9k_hw_write_associd(sc
->sc_ah
);
1979 sc
->sc_flags
&= ~SC_OP_ANI_RUN
;
1980 del_timer_sync(&common
->ani
.timer
);
1981 del_timer_sync(&sc
->rx_poll_timer
);
1982 memset(&sc
->caldata
, 0, sizeof(sc
->caldata
));
1986 static void ath9k_bss_info_changed(struct ieee80211_hw
*hw
,
1987 struct ieee80211_vif
*vif
,
1988 struct ieee80211_bss_conf
*bss_conf
,
1991 struct ath_softc
*sc
= hw
->priv
;
1992 struct ath_hw
*ah
= sc
->sc_ah
;
1993 struct ath_common
*common
= ath9k_hw_common(ah
);
1994 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1997 ath9k_ps_wakeup(sc
);
1998 mutex_lock(&sc
->mutex
);
2000 if (changed
& BSS_CHANGED_ASSOC
) {
2001 ath9k_config_bss(sc
, vif
);
2003 ath_dbg(common
, CONFIG
, "BSSID: %pM aid: 0x%x\n",
2004 common
->curbssid
, common
->curaid
);
2007 if (changed
& BSS_CHANGED_IBSS
) {
2008 /* There can be only one vif available */
2009 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
2010 common
->curaid
= bss_conf
->aid
;
2011 ath9k_hw_write_associd(sc
->sc_ah
);
2013 if (bss_conf
->ibss_joined
) {
2014 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
2016 if (!common
->disable_ani
) {
2017 sc
->sc_flags
|= SC_OP_ANI_RUN
;
2018 ath_start_ani(common
);
2022 sc
->sc_flags
&= ~SC_OP_ANI_RUN
;
2023 del_timer_sync(&common
->ani
.timer
);
2024 del_timer_sync(&sc
->rx_poll_timer
);
2029 * In case of AP mode, the HW TSF has to be reset
2030 * when the beacon interval changes.
2032 if ((changed
& BSS_CHANGED_BEACON_INT
) &&
2033 (vif
->type
== NL80211_IFTYPE_AP
))
2034 sc
->sc_flags
|= SC_OP_TSF_RESET
;
2036 /* Configure beaconing (AP, IBSS, MESH) */
2037 if (ath9k_uses_beacons(vif
->type
) &&
2038 ((changed
& BSS_CHANGED_BEACON
) ||
2039 (changed
& BSS_CHANGED_BEACON_ENABLED
) ||
2040 (changed
& BSS_CHANGED_BEACON_INT
))) {
2041 ath9k_set_beaconing_status(sc
, false);
2042 if (bss_conf
->enable_beacon
)
2043 ath_beacon_alloc(sc
, vif
);
2045 avp
->is_bslot_active
= false;
2046 ath_beacon_config(sc
, vif
);
2047 ath9k_set_beaconing_status(sc
, true);
2050 if (changed
& BSS_CHANGED_ERP_SLOT
) {
2051 if (bss_conf
->use_short_slot
)
2055 if (vif
->type
== NL80211_IFTYPE_AP
) {
2057 * Defer update, so that connected stations can adjust
2058 * their settings at the same time.
2059 * See beacon.c for more details
2061 sc
->beacon
.slottime
= slottime
;
2062 sc
->beacon
.updateslot
= UPDATE
;
2064 ah
->slottime
= slottime
;
2065 ath9k_hw_init_global_settings(ah
);
2069 mutex_unlock(&sc
->mutex
);
2070 ath9k_ps_restore(sc
);
2073 static u64
ath9k_get_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
2075 struct ath_softc
*sc
= hw
->priv
;
2078 mutex_lock(&sc
->mutex
);
2079 ath9k_ps_wakeup(sc
);
2080 tsf
= ath9k_hw_gettsf64(sc
->sc_ah
);
2081 ath9k_ps_restore(sc
);
2082 mutex_unlock(&sc
->mutex
);
2087 static void ath9k_set_tsf(struct ieee80211_hw
*hw
,
2088 struct ieee80211_vif
*vif
,
2091 struct ath_softc
*sc
= hw
->priv
;
2093 mutex_lock(&sc
->mutex
);
2094 ath9k_ps_wakeup(sc
);
2095 ath9k_hw_settsf64(sc
->sc_ah
, tsf
);
2096 ath9k_ps_restore(sc
);
2097 mutex_unlock(&sc
->mutex
);
2100 static void ath9k_reset_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
2102 struct ath_softc
*sc
= hw
->priv
;
2104 mutex_lock(&sc
->mutex
);
2106 ath9k_ps_wakeup(sc
);
2107 ath9k_hw_reset_tsf(sc
->sc_ah
);
2108 ath9k_ps_restore(sc
);
2110 mutex_unlock(&sc
->mutex
);
2113 static int ath9k_ampdu_action(struct ieee80211_hw
*hw
,
2114 struct ieee80211_vif
*vif
,
2115 enum ieee80211_ampdu_mlme_action action
,
2116 struct ieee80211_sta
*sta
,
2117 u16 tid
, u16
*ssn
, u8 buf_size
)
2119 struct ath_softc
*sc
= hw
->priv
;
2125 case IEEE80211_AMPDU_RX_START
:
2127 case IEEE80211_AMPDU_RX_STOP
:
2129 case IEEE80211_AMPDU_TX_START
:
2130 ath9k_ps_wakeup(sc
);
2131 ret
= ath_tx_aggr_start(sc
, sta
, tid
, ssn
);
2133 ieee80211_start_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
2134 ath9k_ps_restore(sc
);
2136 case IEEE80211_AMPDU_TX_STOP
:
2137 ath9k_ps_wakeup(sc
);
2138 ath_tx_aggr_stop(sc
, sta
, tid
);
2139 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
2140 ath9k_ps_restore(sc
);
2142 case IEEE80211_AMPDU_TX_OPERATIONAL
:
2143 ath9k_ps_wakeup(sc
);
2144 ath_tx_aggr_resume(sc
, sta
, tid
);
2145 ath9k_ps_restore(sc
);
2148 ath_err(ath9k_hw_common(sc
->sc_ah
), "Unknown AMPDU action\n");
2156 static int ath9k_get_survey(struct ieee80211_hw
*hw
, int idx
,
2157 struct survey_info
*survey
)
2159 struct ath_softc
*sc
= hw
->priv
;
2160 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2161 struct ieee80211_supported_band
*sband
;
2162 struct ieee80211_channel
*chan
;
2163 unsigned long flags
;
2166 spin_lock_irqsave(&common
->cc_lock
, flags
);
2168 ath_update_survey_stats(sc
);
2170 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
];
2171 if (sband
&& idx
>= sband
->n_channels
) {
2172 idx
-= sband
->n_channels
;
2177 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
];
2179 if (!sband
|| idx
>= sband
->n_channels
) {
2180 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
2184 chan
= &sband
->channels
[idx
];
2185 pos
= chan
->hw_value
;
2186 memcpy(survey
, &sc
->survey
[pos
], sizeof(*survey
));
2187 survey
->channel
= chan
;
2188 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
2193 static void ath9k_set_coverage_class(struct ieee80211_hw
*hw
, u8 coverage_class
)
2195 struct ath_softc
*sc
= hw
->priv
;
2196 struct ath_hw
*ah
= sc
->sc_ah
;
2198 mutex_lock(&sc
->mutex
);
2199 ah
->coverage_class
= coverage_class
;
2201 ath9k_ps_wakeup(sc
);
2202 ath9k_hw_init_global_settings(ah
);
2203 ath9k_ps_restore(sc
);
2205 mutex_unlock(&sc
->mutex
);
2208 static void ath9k_flush(struct ieee80211_hw
*hw
, bool drop
)
2210 struct ath_softc
*sc
= hw
->priv
;
2211 struct ath_hw
*ah
= sc
->sc_ah
;
2212 struct ath_common
*common
= ath9k_hw_common(ah
);
2213 int timeout
= 200; /* ms */
2217 mutex_lock(&sc
->mutex
);
2218 cancel_delayed_work_sync(&sc
->tx_complete_work
);
2220 if (ah
->ah_flags
& AH_UNPLUGGED
) {
2221 ath_dbg(common
, ANY
, "Device has been unplugged!\n");
2222 mutex_unlock(&sc
->mutex
);
2226 if (sc
->sc_flags
& SC_OP_INVALID
) {
2227 ath_dbg(common
, ANY
, "Device not present\n");
2228 mutex_unlock(&sc
->mutex
);
2232 for (j
= 0; j
< timeout
; j
++) {
2236 usleep_range(1000, 2000);
2238 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
2239 if (!ATH_TXQ_SETUP(sc
, i
))
2242 npend
= ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]);
2253 ath9k_ps_wakeup(sc
);
2254 spin_lock_bh(&sc
->sc_pcu_lock
);
2255 drain_txq
= ath_drain_all_txq(sc
, false);
2256 spin_unlock_bh(&sc
->sc_pcu_lock
);
2259 ath_reset(sc
, false);
2261 ath9k_ps_restore(sc
);
2262 ieee80211_wake_queues(hw
);
2265 ieee80211_queue_delayed_work(hw
, &sc
->tx_complete_work
, 0);
2266 mutex_unlock(&sc
->mutex
);
2269 static bool ath9k_tx_frames_pending(struct ieee80211_hw
*hw
)
2271 struct ath_softc
*sc
= hw
->priv
;
2274 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
2275 if (!ATH_TXQ_SETUP(sc
, i
))
2278 if (ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]))
2284 static int ath9k_tx_last_beacon(struct ieee80211_hw
*hw
)
2286 struct ath_softc
*sc
= hw
->priv
;
2287 struct ath_hw
*ah
= sc
->sc_ah
;
2288 struct ieee80211_vif
*vif
;
2289 struct ath_vif
*avp
;
2291 struct ath_tx_status ts
;
2292 bool edma
= !!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
);
2295 vif
= sc
->beacon
.bslot
[0];
2299 avp
= (void *)vif
->drv_priv
;
2300 if (!avp
->is_bslot_active
)
2303 if (!sc
->beacon
.tx_processed
&& !edma
) {
2304 tasklet_disable(&sc
->bcon_tasklet
);
2307 if (!bf
|| !bf
->bf_mpdu
)
2310 status
= ath9k_hw_txprocdesc(ah
, bf
->bf_desc
, &ts
);
2311 if (status
== -EINPROGRESS
)
2314 sc
->beacon
.tx_processed
= true;
2315 sc
->beacon
.tx_last
= !(ts
.ts_status
& ATH9K_TXERR_MASK
);
2318 tasklet_enable(&sc
->bcon_tasklet
);
2321 return sc
->beacon
.tx_last
;
2324 static int ath9k_get_stats(struct ieee80211_hw
*hw
,
2325 struct ieee80211_low_level_stats
*stats
)
2327 struct ath_softc
*sc
= hw
->priv
;
2328 struct ath_hw
*ah
= sc
->sc_ah
;
2329 struct ath9k_mib_stats
*mib_stats
= &ah
->ah_mibStats
;
2331 stats
->dot11ACKFailureCount
= mib_stats
->ackrcv_bad
;
2332 stats
->dot11RTSFailureCount
= mib_stats
->rts_bad
;
2333 stats
->dot11FCSErrorCount
= mib_stats
->fcs_bad
;
2334 stats
->dot11RTSSuccessCount
= mib_stats
->rts_good
;
2338 static u32
fill_chainmask(u32 cap
, u32
new)
2343 for (i
= 0; cap
&& new; i
++, cap
>>= 1) {
2344 if (!(cap
& BIT(0)))
2356 static int ath9k_set_antenna(struct ieee80211_hw
*hw
, u32 tx_ant
, u32 rx_ant
)
2358 struct ath_softc
*sc
= hw
->priv
;
2359 struct ath_hw
*ah
= sc
->sc_ah
;
2361 if (!rx_ant
|| !tx_ant
)
2364 sc
->ant_rx
= rx_ant
;
2365 sc
->ant_tx
= tx_ant
;
2367 if (ah
->caps
.rx_chainmask
== 1)
2370 /* AR9100 runs into calibration issues if not all rx chains are enabled */
2371 if (AR_SREV_9100(ah
))
2372 ah
->rxchainmask
= 0x7;
2374 ah
->rxchainmask
= fill_chainmask(ah
->caps
.rx_chainmask
, rx_ant
);
2376 ah
->txchainmask
= fill_chainmask(ah
->caps
.tx_chainmask
, tx_ant
);
2377 ath9k_reload_chainmask_settings(sc
);
2382 static int ath9k_get_antenna(struct ieee80211_hw
*hw
, u32
*tx_ant
, u32
*rx_ant
)
2384 struct ath_softc
*sc
= hw
->priv
;
2386 *tx_ant
= sc
->ant_tx
;
2387 *rx_ant
= sc
->ant_rx
;
2391 struct ieee80211_ops ath9k_ops
= {
2393 .start
= ath9k_start
,
2395 .add_interface
= ath9k_add_interface
,
2396 .change_interface
= ath9k_change_interface
,
2397 .remove_interface
= ath9k_remove_interface
,
2398 .config
= ath9k_config
,
2399 .configure_filter
= ath9k_configure_filter
,
2400 .sta_add
= ath9k_sta_add
,
2401 .sta_remove
= ath9k_sta_remove
,
2402 .sta_notify
= ath9k_sta_notify
,
2403 .conf_tx
= ath9k_conf_tx
,
2404 .bss_info_changed
= ath9k_bss_info_changed
,
2405 .set_key
= ath9k_set_key
,
2406 .get_tsf
= ath9k_get_tsf
,
2407 .set_tsf
= ath9k_set_tsf
,
2408 .reset_tsf
= ath9k_reset_tsf
,
2409 .ampdu_action
= ath9k_ampdu_action
,
2410 .get_survey
= ath9k_get_survey
,
2411 .rfkill_poll
= ath9k_rfkill_poll_state
,
2412 .set_coverage_class
= ath9k_set_coverage_class
,
2413 .flush
= ath9k_flush
,
2414 .tx_frames_pending
= ath9k_tx_frames_pending
,
2415 .tx_last_beacon
= ath9k_tx_last_beacon
,
2416 .get_stats
= ath9k_get_stats
,
2417 .set_antenna
= ath9k_set_antenna
,
2418 .get_antenna
= ath9k_get_antenna
,