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 if (!ath_stoprecv(sc
))
256 if (!ath_drain_all_txq(sc
, retry_tx
))
260 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
261 ath_rx_tasklet(sc
, 1, true);
262 ath_rx_tasklet(sc
, 1, false);
270 static bool ath_complete_reset(struct ath_softc
*sc
, bool start
)
272 struct ath_hw
*ah
= sc
->sc_ah
;
273 struct ath_common
*common
= ath9k_hw_common(ah
);
275 if (ath_startrecv(sc
) != 0) {
276 ath_err(common
, "Unable to restart recv logic\n");
280 ath9k_cmn_update_txpow(ah
, sc
->curtxpow
,
281 sc
->config
.txpowlimit
, &sc
->curtxpow
);
282 ath9k_hw_set_interrupts(ah
);
283 ath9k_hw_enable_interrupts(ah
);
285 if (!(sc
->sc_flags
& (SC_OP_OFFCHANNEL
)) && start
) {
286 if (sc
->sc_flags
& SC_OP_BEACONS
)
289 ieee80211_queue_delayed_work(sc
->hw
, &sc
->tx_complete_work
, 0);
290 ieee80211_queue_delayed_work(sc
->hw
, &sc
->hw_pll_work
, HZ
/2);
291 ath_start_rx_poll(sc
, 3);
292 if (!common
->disable_ani
)
293 ath_start_ani(common
);
296 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_ANT_DIV_COMB
) && sc
->ant_rx
!= 3) {
297 struct ath_hw_antcomb_conf div_ant_conf
;
300 ath9k_hw_antdiv_comb_conf_get(ah
, &div_ant_conf
);
303 lna_conf
= ATH_ANT_DIV_COMB_LNA1
;
305 lna_conf
= ATH_ANT_DIV_COMB_LNA2
;
306 div_ant_conf
.main_lna_conf
= lna_conf
;
307 div_ant_conf
.alt_lna_conf
= lna_conf
;
309 ath9k_hw_antdiv_comb_conf_set(ah
, &div_ant_conf
);
312 ieee80211_wake_queues(sc
->hw
);
317 static int ath_reset_internal(struct ath_softc
*sc
, struct ath9k_channel
*hchan
,
320 struct ath_hw
*ah
= sc
->sc_ah
;
321 struct ath_common
*common
= ath9k_hw_common(ah
);
322 struct ath9k_hw_cal_data
*caldata
= NULL
;
327 __ath_cancel_work(sc
);
329 spin_lock_bh(&sc
->sc_pcu_lock
);
331 if (!(sc
->sc_flags
& SC_OP_OFFCHANNEL
)) {
333 caldata
= &sc
->caldata
;
342 if (!ath_prepare_reset(sc
, retry_tx
, flush
))
345 ath_dbg(common
, CONFIG
, "Reset to %u MHz, HT40: %d fastcc: %d\n",
346 hchan
->channel
, IS_CHAN_HT40(hchan
), fastcc
);
348 r
= ath9k_hw_reset(ah
, hchan
, caldata
, fastcc
);
351 "Unable to reset channel, reset status %d\n", r
);
355 if (!ath_complete_reset(sc
, true))
359 spin_unlock_bh(&sc
->sc_pcu_lock
);
365 * Set/change channels. If the channel is really being changed, it's done
366 * by reseting the chip. To accomplish this we must first cleanup any pending
367 * DMA, then restart stuff.
369 static int ath_set_channel(struct ath_softc
*sc
, struct ieee80211_hw
*hw
,
370 struct ath9k_channel
*hchan
)
374 if (sc
->sc_flags
& SC_OP_INVALID
)
377 r
= ath_reset_internal(sc
, hchan
, false);
382 static void ath_paprd_activate(struct ath_softc
*sc
)
384 struct ath_hw
*ah
= sc
->sc_ah
;
385 struct ath9k_hw_cal_data
*caldata
= ah
->caldata
;
388 if (!caldata
|| !caldata
->paprd_done
)
392 ar9003_paprd_enable(ah
, false);
393 for (chain
= 0; chain
< AR9300_MAX_CHAINS
; chain
++) {
394 if (!(ah
->txchainmask
& BIT(chain
)))
397 ar9003_paprd_populate_single_table(ah
, caldata
, chain
);
400 ar9003_paprd_enable(ah
, true);
401 ath9k_ps_restore(sc
);
404 static bool ath_paprd_send_frame(struct ath_softc
*sc
, struct sk_buff
*skb
, int chain
)
406 struct ieee80211_hw
*hw
= sc
->hw
;
407 struct ieee80211_tx_info
*tx_info
= IEEE80211_SKB_CB(skb
);
408 struct ath_hw
*ah
= sc
->sc_ah
;
409 struct ath_common
*common
= ath9k_hw_common(ah
);
410 struct ath_tx_control txctl
;
413 memset(&txctl
, 0, sizeof(txctl
));
414 txctl
.txq
= sc
->tx
.txq_map
[WME_AC_BE
];
416 memset(tx_info
, 0, sizeof(*tx_info
));
417 tx_info
->band
= hw
->conf
.channel
->band
;
418 tx_info
->flags
|= IEEE80211_TX_CTL_NO_ACK
;
419 tx_info
->control
.rates
[0].idx
= 0;
420 tx_info
->control
.rates
[0].count
= 1;
421 tx_info
->control
.rates
[0].flags
= IEEE80211_TX_RC_MCS
;
422 tx_info
->control
.rates
[1].idx
= -1;
424 init_completion(&sc
->paprd_complete
);
425 txctl
.paprd
= BIT(chain
);
427 if (ath_tx_start(hw
, skb
, &txctl
) != 0) {
428 ath_dbg(common
, CALIBRATE
, "PAPRD TX failed\n");
429 dev_kfree_skb_any(skb
);
433 time_left
= wait_for_completion_timeout(&sc
->paprd_complete
,
434 msecs_to_jiffies(ATH_PAPRD_TIMEOUT
));
437 ath_dbg(common
, CALIBRATE
,
438 "Timeout waiting for paprd training on TX chain %d\n",
444 void ath_paprd_calibrate(struct work_struct
*work
)
446 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, paprd_work
);
447 struct ieee80211_hw
*hw
= sc
->hw
;
448 struct ath_hw
*ah
= sc
->sc_ah
;
449 struct ieee80211_hdr
*hdr
;
450 struct sk_buff
*skb
= NULL
;
451 struct ath9k_hw_cal_data
*caldata
= ah
->caldata
;
452 struct ath_common
*common
= ath9k_hw_common(ah
);
463 if (ar9003_paprd_init_table(ah
) < 0)
466 skb
= alloc_skb(len
, GFP_KERNEL
);
471 memset(skb
->data
, 0, len
);
472 hdr
= (struct ieee80211_hdr
*)skb
->data
;
473 ftype
= IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
;
474 hdr
->frame_control
= cpu_to_le16(ftype
);
475 hdr
->duration_id
= cpu_to_le16(10);
476 memcpy(hdr
->addr1
, hw
->wiphy
->perm_addr
, ETH_ALEN
);
477 memcpy(hdr
->addr2
, hw
->wiphy
->perm_addr
, ETH_ALEN
);
478 memcpy(hdr
->addr3
, hw
->wiphy
->perm_addr
, ETH_ALEN
);
480 for (chain
= 0; chain
< AR9300_MAX_CHAINS
; chain
++) {
481 if (!(ah
->txchainmask
& BIT(chain
)))
486 ath_dbg(common
, CALIBRATE
,
487 "Sending PAPRD frame for thermal measurement on chain %d\n",
489 if (!ath_paprd_send_frame(sc
, skb
, chain
))
492 ar9003_paprd_setup_gain_table(ah
, chain
);
494 ath_dbg(common
, CALIBRATE
,
495 "Sending PAPRD training frame on chain %d\n", chain
);
496 if (!ath_paprd_send_frame(sc
, skb
, chain
))
499 if (!ar9003_paprd_is_done(ah
)) {
500 ath_dbg(common
, CALIBRATE
,
501 "PAPRD not yet done on chain %d\n", chain
);
505 if (ar9003_paprd_create_curve(ah
, caldata
, chain
)) {
506 ath_dbg(common
, CALIBRATE
,
507 "PAPRD create curve failed on chain %d\n",
517 caldata
->paprd_done
= true;
518 ath_paprd_activate(sc
);
522 ath9k_ps_restore(sc
);
526 * This routine performs the periodic noise floor calibration function
527 * that is used to adjust and optimize the chip performance. This
528 * takes environmental changes (location, temperature) into account.
529 * When the task is complete, it reschedules itself depending on the
530 * appropriate interval that was calculated.
532 void ath_ani_calibrate(unsigned long data
)
534 struct ath_softc
*sc
= (struct ath_softc
*)data
;
535 struct ath_hw
*ah
= sc
->sc_ah
;
536 struct ath_common
*common
= ath9k_hw_common(ah
);
537 bool longcal
= false;
538 bool shortcal
= false;
539 bool aniflag
= false;
540 unsigned int timestamp
= jiffies_to_msecs(jiffies
);
541 u32 cal_interval
, short_cal_interval
, long_cal_interval
;
544 if (ah
->caldata
&& ah
->caldata
->nfcal_interference
)
545 long_cal_interval
= ATH_LONG_CALINTERVAL_INT
;
547 long_cal_interval
= ATH_LONG_CALINTERVAL
;
549 short_cal_interval
= (ah
->opmode
== NL80211_IFTYPE_AP
) ?
550 ATH_AP_SHORT_CALINTERVAL
: ATH_STA_SHORT_CALINTERVAL
;
552 /* Only calibrate if awake */
553 if (sc
->sc_ah
->power_mode
!= ATH9K_PM_AWAKE
)
558 /* Long calibration runs independently of short calibration. */
559 if ((timestamp
- common
->ani
.longcal_timer
) >= long_cal_interval
) {
561 common
->ani
.longcal_timer
= timestamp
;
564 /* Short calibration applies only while caldone is false */
565 if (!common
->ani
.caldone
) {
566 if ((timestamp
- common
->ani
.shortcal_timer
) >= short_cal_interval
) {
568 common
->ani
.shortcal_timer
= timestamp
;
569 common
->ani
.resetcal_timer
= timestamp
;
572 if ((timestamp
- common
->ani
.resetcal_timer
) >=
573 ATH_RESTART_CALINTERVAL
) {
574 common
->ani
.caldone
= ath9k_hw_reset_calvalid(ah
);
575 if (common
->ani
.caldone
)
576 common
->ani
.resetcal_timer
= timestamp
;
580 /* Verify whether we must check ANI */
581 if (sc
->sc_ah
->config
.enable_ani
582 && (timestamp
- common
->ani
.checkani_timer
) >=
583 ah
->config
.ani_poll_interval
) {
585 common
->ani
.checkani_timer
= timestamp
;
588 /* Call ANI routine if necessary */
590 spin_lock_irqsave(&common
->cc_lock
, flags
);
591 ath9k_hw_ani_monitor(ah
, ah
->curchan
);
592 ath_update_survey_stats(sc
);
593 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
596 /* Perform calibration if necessary */
597 if (longcal
|| shortcal
) {
598 common
->ani
.caldone
=
599 ath9k_hw_calibrate(ah
, ah
->curchan
,
600 ah
->rxchainmask
, longcal
);
604 "Calibration @%lu finished: %s %s %s, caldone: %s\n",
606 longcal
? "long" : "", shortcal
? "short" : "",
607 aniflag
? "ani" : "", common
->ani
.caldone
? "true" : "false");
609 ath9k_ps_restore(sc
);
613 * Set timer interval based on previous results.
614 * The interval must be the shortest necessary to satisfy ANI,
615 * short calibration and long calibration.
617 ath9k_debug_samp_bb_mac(sc
);
618 cal_interval
= ATH_LONG_CALINTERVAL
;
619 if (sc
->sc_ah
->config
.enable_ani
)
620 cal_interval
= min(cal_interval
,
621 (u32
)ah
->config
.ani_poll_interval
);
622 if (!common
->ani
.caldone
)
623 cal_interval
= min(cal_interval
, (u32
)short_cal_interval
);
625 mod_timer(&common
->ani
.timer
, jiffies
+ msecs_to_jiffies(cal_interval
));
626 if ((sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_PAPRD
) && ah
->caldata
) {
627 if (!ah
->caldata
->paprd_done
)
628 ieee80211_queue_work(sc
->hw
, &sc
->paprd_work
);
629 else if (!ah
->paprd_table_write_done
)
630 ath_paprd_activate(sc
);
634 static void ath_node_attach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
,
635 struct ieee80211_vif
*vif
)
638 an
= (struct ath_node
*)sta
->drv_priv
;
640 #ifdef CONFIG_ATH9K_DEBUGFS
641 spin_lock(&sc
->nodes_lock
);
642 list_add(&an
->list
, &sc
->nodes
);
643 spin_unlock(&sc
->nodes_lock
);
648 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
) {
649 ath_tx_node_init(sc
, an
);
650 an
->maxampdu
= 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR
+
651 sta
->ht_cap
.ampdu_factor
);
652 an
->mpdudensity
= parse_mpdudensity(sta
->ht_cap
.ampdu_density
);
656 static void ath_node_detach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
)
658 struct ath_node
*an
= (struct ath_node
*)sta
->drv_priv
;
660 #ifdef CONFIG_ATH9K_DEBUGFS
661 spin_lock(&sc
->nodes_lock
);
663 spin_unlock(&sc
->nodes_lock
);
667 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
668 ath_tx_node_cleanup(sc
, an
);
672 void ath9k_tasklet(unsigned long data
)
674 struct ath_softc
*sc
= (struct ath_softc
*)data
;
675 struct ath_hw
*ah
= sc
->sc_ah
;
676 struct ath_common
*common
= ath9k_hw_common(ah
);
678 u32 status
= sc
->intrstatus
;
682 spin_lock(&sc
->sc_pcu_lock
);
684 if ((status
& ATH9K_INT_FATAL
) ||
685 (status
& ATH9K_INT_BB_WATCHDOG
)) {
686 #ifdef CONFIG_ATH9K_DEBUGFS
687 enum ath_reset_type type
;
689 if (status
& ATH9K_INT_FATAL
)
690 type
= RESET_TYPE_FATAL_INT
;
692 type
= RESET_TYPE_BB_WATCHDOG
;
694 RESET_STAT_INC(sc
, type
);
696 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
700 if ((status
& ATH9K_INT_TSFOOR
) && sc
->ps_enabled
) {
702 * TSF sync does not look correct; remain awake to sync with
705 ath_dbg(common
, PS
, "TSFOOR - Sync with next Beacon\n");
706 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
| PS_BEACON_SYNC
;
709 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
710 rxmask
= (ATH9K_INT_RXHP
| ATH9K_INT_RXLP
| ATH9K_INT_RXEOL
|
713 rxmask
= (ATH9K_INT_RX
| ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
715 if (status
& rxmask
) {
716 /* Check for high priority Rx first */
717 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
718 (status
& ATH9K_INT_RXHP
))
719 ath_rx_tasklet(sc
, 0, true);
721 ath_rx_tasklet(sc
, 0, false);
724 if (status
& ATH9K_INT_TX
) {
725 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
726 ath_tx_edma_tasklet(sc
);
731 ath9k_btcoex_handle_interrupt(sc
, status
);
734 /* re-enable hardware interrupt */
735 ath9k_hw_enable_interrupts(ah
);
737 spin_unlock(&sc
->sc_pcu_lock
);
738 ath9k_ps_restore(sc
);
741 irqreturn_t
ath_isr(int irq
, void *dev
)
743 #define SCHED_INTR ( \
745 ATH9K_INT_BB_WATCHDOG | \
755 ATH9K_INT_GENTIMER | \
758 struct ath_softc
*sc
= dev
;
759 struct ath_hw
*ah
= sc
->sc_ah
;
760 struct ath_common
*common
= ath9k_hw_common(ah
);
761 enum ath9k_int status
;
765 * The hardware is not ready/present, don't
766 * touch anything. Note this can happen early
767 * on if the IRQ is shared.
769 if (sc
->sc_flags
& SC_OP_INVALID
)
773 /* shared irq, not for us */
775 if (!ath9k_hw_intrpend(ah
))
779 * Figure out the reason(s) for the interrupt. Note
780 * that the hal returns a pseudo-ISR that may include
781 * bits we haven't explicitly enabled so we mask the
782 * value to insure we only process bits we requested.
784 ath9k_hw_getisr(ah
, &status
); /* NB: clears ISR too */
785 status
&= ah
->imask
; /* discard unasked-for bits */
788 * If there are no status bits set, then this interrupt was not
789 * for me (should have been caught above).
794 /* Cache the status */
795 sc
->intrstatus
= status
;
797 if (status
& SCHED_INTR
)
801 * If a FATAL or RXORN interrupt is received, we have to reset the
804 if ((status
& ATH9K_INT_FATAL
) || ((status
& ATH9K_INT_RXORN
) &&
805 !(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)))
808 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
809 (status
& ATH9K_INT_BB_WATCHDOG
)) {
811 spin_lock(&common
->cc_lock
);
812 ath_hw_cycle_counters_update(common
);
813 ar9003_hw_bb_watchdog_dbg_info(ah
);
814 spin_unlock(&common
->cc_lock
);
819 if (status
& ATH9K_INT_SWBA
)
820 tasklet_schedule(&sc
->bcon_tasklet
);
822 if (status
& ATH9K_INT_TXURN
)
823 ath9k_hw_updatetxtriglevel(ah
, true);
825 if (status
& ATH9K_INT_RXEOL
) {
826 ah
->imask
&= ~(ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
827 ath9k_hw_set_interrupts(ah
);
830 if (status
& ATH9K_INT_MIB
) {
832 * Disable interrupts until we service the MIB
833 * interrupt; otherwise it will continue to
836 ath9k_hw_disable_interrupts(ah
);
838 * Let the hal handle the event. We assume
839 * it will clear whatever condition caused
842 spin_lock(&common
->cc_lock
);
843 ath9k_hw_proc_mib_event(ah
);
844 spin_unlock(&common
->cc_lock
);
845 ath9k_hw_enable_interrupts(ah
);
848 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
849 if (status
& ATH9K_INT_TIM_TIMER
) {
850 if (ATH_DBG_WARN_ON_ONCE(sc
->ps_idle
))
852 /* Clear RxAbort bit so that we can
854 ath9k_setpower(sc
, ATH9K_PM_AWAKE
);
855 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
856 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
;
861 ath_debug_stat_interrupt(sc
, status
);
864 /* turn off every interrupt */
865 ath9k_hw_disable_interrupts(ah
);
866 tasklet_schedule(&sc
->intr_tq
);
874 static int ath_reset(struct ath_softc
*sc
, bool retry_tx
)
880 r
= ath_reset_internal(sc
, NULL
, retry_tx
);
884 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
885 if (ATH_TXQ_SETUP(sc
, i
)) {
886 spin_lock_bh(&sc
->tx
.txq
[i
].axq_lock
);
887 ath_txq_schedule(sc
, &sc
->tx
.txq
[i
]);
888 spin_unlock_bh(&sc
->tx
.txq
[i
].axq_lock
);
893 ath9k_ps_restore(sc
);
898 void ath_reset_work(struct work_struct
*work
)
900 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, hw_reset_work
);
905 void ath_hw_check(struct work_struct
*work
)
907 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, hw_check_work
);
908 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
911 u8 is_alive
, nbeacon
= 1;
914 is_alive
= ath9k_hw_check_alive(sc
->sc_ah
);
916 if (is_alive
&& !AR_SREV_9300(sc
->sc_ah
))
918 else if (!is_alive
&& AR_SREV_9300(sc
->sc_ah
)) {
919 ath_dbg(common
, RESET
,
920 "DCU stuck is detected. Schedule chip reset\n");
921 RESET_STAT_INC(sc
, RESET_TYPE_MAC_HANG
);
925 spin_lock_irqsave(&common
->cc_lock
, flags
);
926 busy
= ath_update_survey_stats(sc
);
927 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
929 ath_dbg(common
, RESET
, "Possible baseband hang, busy=%d (try %d)\n",
930 busy
, sc
->hw_busy_count
+ 1);
932 if (++sc
->hw_busy_count
>= 3) {
933 RESET_STAT_INC(sc
, RESET_TYPE_BB_HANG
);
936 } else if (busy
>= 0) {
937 sc
->hw_busy_count
= 0;
941 ath_start_rx_poll(sc
, nbeacon
);
945 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
947 ath9k_ps_restore(sc
);
950 static void ath_hw_pll_rx_hang_check(struct ath_softc
*sc
, u32 pll_sqsum
)
953 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
955 if (pll_sqsum
>= 0x40000) {
958 /* Rx is hung for more than 500ms. Reset it */
959 ath_dbg(common
, RESET
, "Possible RX hang, resetting\n");
960 RESET_STAT_INC(sc
, RESET_TYPE_PLL_HANG
);
961 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
968 void ath_hw_pll_work(struct work_struct
*work
)
970 struct ath_softc
*sc
= container_of(work
, struct ath_softc
,
974 if (AR_SREV_9485(sc
->sc_ah
)) {
977 pll_sqsum
= ar9003_get_pll_sqsum_dvc(sc
->sc_ah
);
978 ath9k_ps_restore(sc
);
980 ath_hw_pll_rx_hang_check(sc
, pll_sqsum
);
982 ieee80211_queue_delayed_work(sc
->hw
, &sc
->hw_pll_work
, HZ
/5);
986 /**********************/
987 /* mac80211 callbacks */
988 /**********************/
990 static int ath9k_start(struct ieee80211_hw
*hw
)
992 struct ath_softc
*sc
= hw
->priv
;
993 struct ath_hw
*ah
= sc
->sc_ah
;
994 struct ath_common
*common
= ath9k_hw_common(ah
);
995 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
996 struct ath9k_channel
*init_channel
;
999 ath_dbg(common
, CONFIG
,
1000 "Starting driver with initial channel: %d MHz\n",
1001 curchan
->center_freq
);
1003 ath9k_ps_wakeup(sc
);
1004 mutex_lock(&sc
->mutex
);
1006 init_channel
= ath9k_cmn_get_curchannel(hw
, ah
);
1008 /* Reset SERDES registers */
1009 ath9k_hw_configpcipowersave(ah
, false);
1012 * The basic interface to setting the hardware in a good
1013 * state is ``reset''. On return the hardware is known to
1014 * be powered up and with interrupts disabled. This must
1015 * be followed by initialization of the appropriate bits
1016 * and then setup of the interrupt mask.
1018 spin_lock_bh(&sc
->sc_pcu_lock
);
1020 atomic_set(&ah
->intr_ref_cnt
, -1);
1022 r
= ath9k_hw_reset(ah
, init_channel
, ah
->caldata
, false);
1025 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
1026 r
, curchan
->center_freq
);
1027 spin_unlock_bh(&sc
->sc_pcu_lock
);
1031 /* Setup our intr mask. */
1032 ah
->imask
= ATH9K_INT_TX
| ATH9K_INT_RXEOL
|
1033 ATH9K_INT_RXORN
| ATH9K_INT_FATAL
|
1036 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
1037 ah
->imask
|= ATH9K_INT_RXHP
|
1039 ATH9K_INT_BB_WATCHDOG
;
1041 ah
->imask
|= ATH9K_INT_RX
;
1043 ah
->imask
|= ATH9K_INT_GTT
;
1045 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
1046 ah
->imask
|= ATH9K_INT_CST
;
1048 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_MCI
)
1049 ah
->imask
|= ATH9K_INT_MCI
;
1051 sc
->sc_flags
&= ~SC_OP_INVALID
;
1052 sc
->sc_ah
->is_monitoring
= false;
1054 if (!ath_complete_reset(sc
, false)) {
1056 spin_unlock_bh(&sc
->sc_pcu_lock
);
1060 if (ah
->led_pin
>= 0) {
1061 ath9k_hw_cfg_output(ah
, ah
->led_pin
,
1062 AR_GPIO_OUTPUT_MUX_AS_OUTPUT
);
1063 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 0);
1067 * Reset key cache to sane defaults (all entries cleared) instead of
1068 * semi-random values after suspend/resume.
1070 ath9k_cmn_init_crypto(sc
->sc_ah
);
1072 spin_unlock_bh(&sc
->sc_pcu_lock
);
1074 ath9k_start_btcoex(sc
);
1076 if (ah
->caps
.pcie_lcr_extsync_en
&& common
->bus_ops
->extn_synch_en
)
1077 common
->bus_ops
->extn_synch_en(common
);
1080 mutex_unlock(&sc
->mutex
);
1082 ath9k_ps_restore(sc
);
1087 static void ath9k_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
1089 struct ath_softc
*sc
= hw
->priv
;
1090 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1091 struct ath_tx_control txctl
;
1092 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
1094 if (sc
->ps_enabled
) {
1096 * mac80211 does not set PM field for normal data frames, so we
1097 * need to update that based on the current PS mode.
1099 if (ieee80211_is_data(hdr
->frame_control
) &&
1100 !ieee80211_is_nullfunc(hdr
->frame_control
) &&
1101 !ieee80211_has_pm(hdr
->frame_control
)) {
1103 "Add PM=1 for a TX frame while in PS mode\n");
1104 hdr
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
1108 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_NETWORK_SLEEP
)) {
1110 * We are using PS-Poll and mac80211 can request TX while in
1111 * power save mode. Need to wake up hardware for the TX to be
1112 * completed and if needed, also for RX of buffered frames.
1114 ath9k_ps_wakeup(sc
);
1115 if (!(sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
1116 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
1117 if (ieee80211_is_pspoll(hdr
->frame_control
)) {
1119 "Sending PS-Poll to pick a buffered frame\n");
1120 sc
->ps_flags
|= PS_WAIT_FOR_PSPOLL_DATA
;
1122 ath_dbg(common
, PS
, "Wake up to complete TX\n");
1123 sc
->ps_flags
|= PS_WAIT_FOR_TX_ACK
;
1126 * The actual restore operation will happen only after
1127 * the ps_flags bit is cleared. We are just dropping
1128 * the ps_usecount here.
1130 ath9k_ps_restore(sc
);
1134 * Cannot tx while the hardware is in full sleep, it first needs a full
1135 * chip reset to recover from that
1137 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_FULL_SLEEP
)) {
1138 ath_err(common
, "TX while HW is in FULL_SLEEP mode\n");
1142 memset(&txctl
, 0, sizeof(struct ath_tx_control
));
1143 txctl
.txq
= sc
->tx
.txq_map
[skb_get_queue_mapping(skb
)];
1145 ath_dbg(common
, XMIT
, "transmitting packet, skb: %p\n", skb
);
1147 if (ath_tx_start(hw
, skb
, &txctl
) != 0) {
1148 ath_dbg(common
, XMIT
, "TX failed\n");
1149 TX_STAT_INC(txctl
.txq
->axq_qnum
, txfailed
);
1155 dev_kfree_skb_any(skb
);
1158 static void ath9k_stop(struct ieee80211_hw
*hw
)
1160 struct ath_softc
*sc
= hw
->priv
;
1161 struct ath_hw
*ah
= sc
->sc_ah
;
1162 struct ath_common
*common
= ath9k_hw_common(ah
);
1165 mutex_lock(&sc
->mutex
);
1167 ath_cancel_work(sc
);
1168 del_timer_sync(&sc
->rx_poll_timer
);
1170 if (sc
->sc_flags
& SC_OP_INVALID
) {
1171 ath_dbg(common
, ANY
, "Device not present\n");
1172 mutex_unlock(&sc
->mutex
);
1176 /* Ensure HW is awake when we try to shut it down. */
1177 ath9k_ps_wakeup(sc
);
1179 ath9k_stop_btcoex(sc
);
1181 spin_lock_bh(&sc
->sc_pcu_lock
);
1183 /* prevent tasklets to enable interrupts once we disable them */
1184 ah
->imask
&= ~ATH9K_INT_GLOBAL
;
1186 /* make sure h/w will not generate any interrupt
1187 * before setting the invalid flag. */
1188 ath9k_hw_disable_interrupts(ah
);
1190 spin_unlock_bh(&sc
->sc_pcu_lock
);
1192 /* we can now sync irq and kill any running tasklets, since we already
1193 * disabled interrupts and not holding a spin lock */
1194 synchronize_irq(sc
->irq
);
1195 tasklet_kill(&sc
->intr_tq
);
1196 tasklet_kill(&sc
->bcon_tasklet
);
1198 prev_idle
= sc
->ps_idle
;
1201 spin_lock_bh(&sc
->sc_pcu_lock
);
1203 if (ah
->led_pin
>= 0) {
1204 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 1);
1205 ath9k_hw_cfg_gpio_input(ah
, ah
->led_pin
);
1208 ath_prepare_reset(sc
, false, true);
1211 dev_kfree_skb_any(sc
->rx
.frag
);
1216 ah
->curchan
= ath9k_cmn_get_curchannel(hw
, ah
);
1218 ath9k_hw_reset(ah
, ah
->curchan
, ah
->caldata
, false);
1219 ath9k_hw_phy_disable(ah
);
1221 ath9k_hw_configpcipowersave(ah
, true);
1223 spin_unlock_bh(&sc
->sc_pcu_lock
);
1225 ath9k_ps_restore(sc
);
1227 sc
->sc_flags
|= SC_OP_INVALID
;
1228 sc
->ps_idle
= prev_idle
;
1230 mutex_unlock(&sc
->mutex
);
1232 ath_dbg(common
, CONFIG
, "Driver halt\n");
1235 bool ath9k_uses_beacons(int type
)
1238 case NL80211_IFTYPE_AP
:
1239 case NL80211_IFTYPE_ADHOC
:
1240 case NL80211_IFTYPE_MESH_POINT
:
1247 static void ath9k_reclaim_beacon(struct ath_softc
*sc
,
1248 struct ieee80211_vif
*vif
)
1250 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1252 ath9k_set_beaconing_status(sc
, false);
1253 ath_beacon_return(sc
, avp
);
1254 ath9k_set_beaconing_status(sc
, true);
1257 static void ath9k_vif_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
1259 struct ath9k_vif_iter_data
*iter_data
= data
;
1262 if (iter_data
->hw_macaddr
)
1263 for (i
= 0; i
< ETH_ALEN
; i
++)
1264 iter_data
->mask
[i
] &=
1265 ~(iter_data
->hw_macaddr
[i
] ^ mac
[i
]);
1267 switch (vif
->type
) {
1268 case NL80211_IFTYPE_AP
:
1271 case NL80211_IFTYPE_STATION
:
1272 iter_data
->nstations
++;
1274 case NL80211_IFTYPE_ADHOC
:
1275 iter_data
->nadhocs
++;
1277 case NL80211_IFTYPE_MESH_POINT
:
1278 iter_data
->nmeshes
++;
1280 case NL80211_IFTYPE_WDS
:
1288 /* Called with sc->mutex held. */
1289 void ath9k_calculate_iter_data(struct ieee80211_hw
*hw
,
1290 struct ieee80211_vif
*vif
,
1291 struct ath9k_vif_iter_data
*iter_data
)
1293 struct ath_softc
*sc
= hw
->priv
;
1294 struct ath_hw
*ah
= sc
->sc_ah
;
1295 struct ath_common
*common
= ath9k_hw_common(ah
);
1298 * Use the hardware MAC address as reference, the hardware uses it
1299 * together with the BSSID mask when matching addresses.
1301 memset(iter_data
, 0, sizeof(*iter_data
));
1302 iter_data
->hw_macaddr
= common
->macaddr
;
1303 memset(&iter_data
->mask
, 0xff, ETH_ALEN
);
1306 ath9k_vif_iter(iter_data
, vif
->addr
, vif
);
1308 /* Get list of all active MAC addresses */
1309 ieee80211_iterate_active_interfaces_atomic(sc
->hw
, ath9k_vif_iter
,
1313 /* Called with sc->mutex held. */
1314 static void ath9k_calculate_summary_state(struct ieee80211_hw
*hw
,
1315 struct ieee80211_vif
*vif
)
1317 struct ath_softc
*sc
= hw
->priv
;
1318 struct ath_hw
*ah
= sc
->sc_ah
;
1319 struct ath_common
*common
= ath9k_hw_common(ah
);
1320 struct ath9k_vif_iter_data iter_data
;
1322 ath9k_calculate_iter_data(hw
, vif
, &iter_data
);
1324 /* Set BSSID mask. */
1325 memcpy(common
->bssidmask
, iter_data
.mask
, ETH_ALEN
);
1326 ath_hw_setbssidmask(common
);
1328 /* Set op-mode & TSF */
1329 if (iter_data
.naps
> 0) {
1330 ath9k_hw_set_tsfadjust(ah
, 1);
1331 sc
->sc_flags
|= SC_OP_TSF_RESET
;
1332 ah
->opmode
= NL80211_IFTYPE_AP
;
1334 ath9k_hw_set_tsfadjust(ah
, 0);
1335 sc
->sc_flags
&= ~SC_OP_TSF_RESET
;
1337 if (iter_data
.nmeshes
)
1338 ah
->opmode
= NL80211_IFTYPE_MESH_POINT
;
1339 else if (iter_data
.nwds
)
1340 ah
->opmode
= NL80211_IFTYPE_AP
;
1341 else if (iter_data
.nadhocs
)
1342 ah
->opmode
= NL80211_IFTYPE_ADHOC
;
1344 ah
->opmode
= NL80211_IFTYPE_STATION
;
1348 * Enable MIB interrupts when there are hardware phy counters.
1350 if ((iter_data
.nstations
+ iter_data
.nadhocs
+ iter_data
.nmeshes
) > 0) {
1351 if (ah
->config
.enable_ani
)
1352 ah
->imask
|= ATH9K_INT_MIB
;
1353 ah
->imask
|= ATH9K_INT_TSFOOR
;
1355 ah
->imask
&= ~ATH9K_INT_MIB
;
1356 ah
->imask
&= ~ATH9K_INT_TSFOOR
;
1359 ath9k_hw_set_interrupts(ah
);
1362 if (iter_data
.naps
> 0) {
1363 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
1365 if (!common
->disable_ani
) {
1366 sc
->sc_flags
|= SC_OP_ANI_RUN
;
1367 ath_start_ani(common
);
1371 sc
->sc_flags
&= ~SC_OP_ANI_RUN
;
1372 del_timer_sync(&common
->ani
.timer
);
1376 /* Called with sc->mutex held, vif counts set up properly. */
1377 static void ath9k_do_vif_add_setup(struct ieee80211_hw
*hw
,
1378 struct ieee80211_vif
*vif
)
1380 struct ath_softc
*sc
= hw
->priv
;
1382 ath9k_calculate_summary_state(hw
, vif
);
1384 if (ath9k_uses_beacons(vif
->type
)) {
1385 /* Reserve a beacon slot for the vif */
1386 ath9k_set_beaconing_status(sc
, false);
1387 ath_beacon_alloc(sc
, vif
);
1388 ath9k_set_beaconing_status(sc
, true);
1392 void ath_start_rx_poll(struct ath_softc
*sc
, u8 nbeacon
)
1394 if (!AR_SREV_9300(sc
->sc_ah
))
1397 if (!(sc
->sc_flags
& SC_OP_PRIM_STA_VIF
))
1400 mod_timer(&sc
->rx_poll_timer
, jiffies
+ msecs_to_jiffies
1401 (nbeacon
* sc
->cur_beacon_conf
.beacon_interval
));
1404 void ath_rx_poll(unsigned long data
)
1406 struct ath_softc
*sc
= (struct ath_softc
*)data
;
1408 ieee80211_queue_work(sc
->hw
, &sc
->hw_check_work
);
1411 static int ath9k_add_interface(struct ieee80211_hw
*hw
,
1412 struct ieee80211_vif
*vif
)
1414 struct ath_softc
*sc
= hw
->priv
;
1415 struct ath_hw
*ah
= sc
->sc_ah
;
1416 struct ath_common
*common
= ath9k_hw_common(ah
);
1419 ath9k_ps_wakeup(sc
);
1420 mutex_lock(&sc
->mutex
);
1422 switch (vif
->type
) {
1423 case NL80211_IFTYPE_STATION
:
1424 case NL80211_IFTYPE_WDS
:
1425 case NL80211_IFTYPE_ADHOC
:
1426 case NL80211_IFTYPE_AP
:
1427 case NL80211_IFTYPE_MESH_POINT
:
1430 ath_err(common
, "Interface type %d not yet supported\n",
1436 if (ath9k_uses_beacons(vif
->type
)) {
1437 if (sc
->nbcnvifs
>= ATH_BCBUF
) {
1438 ath_err(common
, "Not enough beacon buffers when adding"
1439 " new interface of type: %i\n",
1446 if ((ah
->opmode
== NL80211_IFTYPE_ADHOC
) ||
1447 ((vif
->type
== NL80211_IFTYPE_ADHOC
) &&
1449 ath_err(common
, "Cannot create ADHOC interface when other"
1450 " interfaces already exist.\n");
1455 ath_dbg(common
, CONFIG
, "Attach a VIF of type: %d\n", vif
->type
);
1459 ath9k_do_vif_add_setup(hw
, vif
);
1461 mutex_unlock(&sc
->mutex
);
1462 ath9k_ps_restore(sc
);
1466 static int ath9k_change_interface(struct ieee80211_hw
*hw
,
1467 struct ieee80211_vif
*vif
,
1468 enum nl80211_iftype new_type
,
1471 struct ath_softc
*sc
= hw
->priv
;
1472 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1475 ath_dbg(common
, CONFIG
, "Change Interface\n");
1476 mutex_lock(&sc
->mutex
);
1477 ath9k_ps_wakeup(sc
);
1479 /* See if new interface type is valid. */
1480 if ((new_type
== NL80211_IFTYPE_ADHOC
) &&
1482 ath_err(common
, "When using ADHOC, it must be the only"
1488 if (ath9k_uses_beacons(new_type
) &&
1489 !ath9k_uses_beacons(vif
->type
)) {
1490 if (sc
->nbcnvifs
>= ATH_BCBUF
) {
1491 ath_err(common
, "No beacon slot available\n");
1497 /* Clean up old vif stuff */
1498 if (ath9k_uses_beacons(vif
->type
))
1499 ath9k_reclaim_beacon(sc
, vif
);
1501 /* Add new settings */
1502 vif
->type
= new_type
;
1505 ath9k_do_vif_add_setup(hw
, vif
);
1507 ath9k_ps_restore(sc
);
1508 mutex_unlock(&sc
->mutex
);
1512 static void ath9k_remove_interface(struct ieee80211_hw
*hw
,
1513 struct ieee80211_vif
*vif
)
1515 struct ath_softc
*sc
= hw
->priv
;
1516 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1518 ath_dbg(common
, CONFIG
, "Detach Interface\n");
1520 ath9k_ps_wakeup(sc
);
1521 mutex_lock(&sc
->mutex
);
1525 /* Reclaim beacon resources */
1526 if (ath9k_uses_beacons(vif
->type
))
1527 ath9k_reclaim_beacon(sc
, vif
);
1529 ath9k_calculate_summary_state(hw
, NULL
);
1531 mutex_unlock(&sc
->mutex
);
1532 ath9k_ps_restore(sc
);
1535 static void ath9k_enable_ps(struct ath_softc
*sc
)
1537 struct ath_hw
*ah
= sc
->sc_ah
;
1538 struct ath_common
*common
= ath9k_hw_common(ah
);
1540 sc
->ps_enabled
= true;
1541 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1542 if ((ah
->imask
& ATH9K_INT_TIM_TIMER
) == 0) {
1543 ah
->imask
|= ATH9K_INT_TIM_TIMER
;
1544 ath9k_hw_set_interrupts(ah
);
1546 ath9k_hw_setrxabort(ah
, 1);
1548 ath_dbg(common
, PS
, "PowerSave enabled\n");
1551 static void ath9k_disable_ps(struct ath_softc
*sc
)
1553 struct ath_hw
*ah
= sc
->sc_ah
;
1554 struct ath_common
*common
= ath9k_hw_common(ah
);
1556 sc
->ps_enabled
= false;
1557 ath9k_hw_setpower(ah
, ATH9K_PM_AWAKE
);
1558 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1559 ath9k_hw_setrxabort(ah
, 0);
1560 sc
->ps_flags
&= ~(PS_WAIT_FOR_BEACON
|
1562 PS_WAIT_FOR_PSPOLL_DATA
|
1563 PS_WAIT_FOR_TX_ACK
);
1564 if (ah
->imask
& ATH9K_INT_TIM_TIMER
) {
1565 ah
->imask
&= ~ATH9K_INT_TIM_TIMER
;
1566 ath9k_hw_set_interrupts(ah
);
1569 ath_dbg(common
, PS
, "PowerSave disabled\n");
1572 static int ath9k_config(struct ieee80211_hw
*hw
, u32 changed
)
1574 struct ath_softc
*sc
= hw
->priv
;
1575 struct ath_hw
*ah
= sc
->sc_ah
;
1576 struct ath_common
*common
= ath9k_hw_common(ah
);
1577 struct ieee80211_conf
*conf
= &hw
->conf
;
1578 bool reset_channel
= false;
1580 ath9k_ps_wakeup(sc
);
1581 mutex_lock(&sc
->mutex
);
1583 if (changed
& IEEE80211_CONF_CHANGE_IDLE
) {
1584 sc
->ps_idle
= !!(conf
->flags
& IEEE80211_CONF_IDLE
);
1586 ath_cancel_work(sc
);
1589 * The chip needs a reset to properly wake up from
1592 reset_channel
= ah
->chip_fullsleep
;
1596 * We just prepare to enable PS. We have to wait until our AP has
1597 * ACK'd our null data frame to disable RX otherwise we'll ignore
1598 * those ACKs and end up retransmitting the same null data frames.
1599 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1601 if (changed
& IEEE80211_CONF_CHANGE_PS
) {
1602 unsigned long flags
;
1603 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
1604 if (conf
->flags
& IEEE80211_CONF_PS
)
1605 ath9k_enable_ps(sc
);
1607 ath9k_disable_ps(sc
);
1608 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
1611 if (changed
& IEEE80211_CONF_CHANGE_MONITOR
) {
1612 if (conf
->flags
& IEEE80211_CONF_MONITOR
) {
1613 ath_dbg(common
, CONFIG
, "Monitor mode is enabled\n");
1614 sc
->sc_ah
->is_monitoring
= true;
1616 ath_dbg(common
, CONFIG
, "Monitor mode is disabled\n");
1617 sc
->sc_ah
->is_monitoring
= false;
1621 if ((changed
& IEEE80211_CONF_CHANGE_CHANNEL
) || reset_channel
) {
1622 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
1623 int pos
= curchan
->hw_value
;
1625 unsigned long flags
;
1628 old_pos
= ah
->curchan
- &ah
->channels
[0];
1630 if (hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
)
1631 sc
->sc_flags
|= SC_OP_OFFCHANNEL
;
1633 sc
->sc_flags
&= ~SC_OP_OFFCHANNEL
;
1635 ath_dbg(common
, CONFIG
, "Set channel: %d MHz type: %d\n",
1636 curchan
->center_freq
, conf
->channel_type
);
1638 /* update survey stats for the old channel before switching */
1639 spin_lock_irqsave(&common
->cc_lock
, flags
);
1640 ath_update_survey_stats(sc
);
1641 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1644 * Preserve the current channel values, before updating
1647 if (ah
->curchan
&& (old_pos
== pos
))
1648 ath9k_hw_getnf(ah
, ah
->curchan
);
1650 ath9k_cmn_update_ichannel(&sc
->sc_ah
->channels
[pos
],
1651 curchan
, conf
->channel_type
);
1654 * If the operating channel changes, change the survey in-use flags
1656 * Reset the survey data for the new channel, unless we're switching
1657 * back to the operating channel from an off-channel operation.
1659 if (!(hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
) &&
1660 sc
->cur_survey
!= &sc
->survey
[pos
]) {
1663 sc
->cur_survey
->filled
&= ~SURVEY_INFO_IN_USE
;
1665 sc
->cur_survey
= &sc
->survey
[pos
];
1667 memset(sc
->cur_survey
, 0, sizeof(struct survey_info
));
1668 sc
->cur_survey
->filled
|= SURVEY_INFO_IN_USE
;
1669 } else if (!(sc
->survey
[pos
].filled
& SURVEY_INFO_IN_USE
)) {
1670 memset(&sc
->survey
[pos
], 0, sizeof(struct survey_info
));
1673 if (ath_set_channel(sc
, hw
, &sc
->sc_ah
->channels
[pos
]) < 0) {
1674 ath_err(common
, "Unable to set channel\n");
1675 mutex_unlock(&sc
->mutex
);
1680 * The most recent snapshot of channel->noisefloor for the old
1681 * channel is only available after the hardware reset. Copy it to
1682 * the survey stats now.
1685 ath_update_survey_nf(sc
, old_pos
);
1688 if (changed
& IEEE80211_CONF_CHANGE_POWER
) {
1689 ath_dbg(common
, CONFIG
, "Set power: %d\n", conf
->power_level
);
1690 sc
->config
.txpowlimit
= 2 * conf
->power_level
;
1691 ath9k_cmn_update_txpow(ah
, sc
->curtxpow
,
1692 sc
->config
.txpowlimit
, &sc
->curtxpow
);
1695 mutex_unlock(&sc
->mutex
);
1696 ath9k_ps_restore(sc
);
1701 #define SUPPORTED_FILTERS \
1702 (FIF_PROMISC_IN_BSS | \
1707 FIF_BCN_PRBRESP_PROMISC | \
1711 /* FIXME: sc->sc_full_reset ? */
1712 static void ath9k_configure_filter(struct ieee80211_hw
*hw
,
1713 unsigned int changed_flags
,
1714 unsigned int *total_flags
,
1717 struct ath_softc
*sc
= hw
->priv
;
1720 changed_flags
&= SUPPORTED_FILTERS
;
1721 *total_flags
&= SUPPORTED_FILTERS
;
1723 sc
->rx
.rxfilter
= *total_flags
;
1724 ath9k_ps_wakeup(sc
);
1725 rfilt
= ath_calcrxfilter(sc
);
1726 ath9k_hw_setrxfilter(sc
->sc_ah
, rfilt
);
1727 ath9k_ps_restore(sc
);
1729 ath_dbg(ath9k_hw_common(sc
->sc_ah
), CONFIG
, "Set HW RX filter: 0x%x\n",
1733 static int ath9k_sta_add(struct ieee80211_hw
*hw
,
1734 struct ieee80211_vif
*vif
,
1735 struct ieee80211_sta
*sta
)
1737 struct ath_softc
*sc
= hw
->priv
;
1738 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1739 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1740 struct ieee80211_key_conf ps_key
= { };
1742 ath_node_attach(sc
, sta
, vif
);
1744 if (vif
->type
!= NL80211_IFTYPE_AP
&&
1745 vif
->type
!= NL80211_IFTYPE_AP_VLAN
)
1748 an
->ps_key
= ath_key_config(common
, vif
, sta
, &ps_key
);
1753 static void ath9k_del_ps_key(struct ath_softc
*sc
,
1754 struct ieee80211_vif
*vif
,
1755 struct ieee80211_sta
*sta
)
1757 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1758 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1759 struct ieee80211_key_conf ps_key
= { .hw_key_idx
= an
->ps_key
};
1764 ath_key_delete(common
, &ps_key
);
1767 static int ath9k_sta_remove(struct ieee80211_hw
*hw
,
1768 struct ieee80211_vif
*vif
,
1769 struct ieee80211_sta
*sta
)
1771 struct ath_softc
*sc
= hw
->priv
;
1773 ath9k_del_ps_key(sc
, vif
, sta
);
1774 ath_node_detach(sc
, sta
);
1779 static void ath9k_sta_notify(struct ieee80211_hw
*hw
,
1780 struct ieee80211_vif
*vif
,
1781 enum sta_notify_cmd cmd
,
1782 struct ieee80211_sta
*sta
)
1784 struct ath_softc
*sc
= hw
->priv
;
1785 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1787 if (!sta
->ht_cap
.ht_supported
)
1791 case STA_NOTIFY_SLEEP
:
1792 an
->sleeping
= true;
1793 ath_tx_aggr_sleep(sta
, sc
, an
);
1795 case STA_NOTIFY_AWAKE
:
1796 an
->sleeping
= false;
1797 ath_tx_aggr_wakeup(sc
, an
);
1802 static int ath9k_conf_tx(struct ieee80211_hw
*hw
,
1803 struct ieee80211_vif
*vif
, u16 queue
,
1804 const struct ieee80211_tx_queue_params
*params
)
1806 struct ath_softc
*sc
= hw
->priv
;
1807 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1808 struct ath_txq
*txq
;
1809 struct ath9k_tx_queue_info qi
;
1812 if (queue
>= WME_NUM_AC
)
1815 txq
= sc
->tx
.txq_map
[queue
];
1817 ath9k_ps_wakeup(sc
);
1818 mutex_lock(&sc
->mutex
);
1820 memset(&qi
, 0, sizeof(struct ath9k_tx_queue_info
));
1822 qi
.tqi_aifs
= params
->aifs
;
1823 qi
.tqi_cwmin
= params
->cw_min
;
1824 qi
.tqi_cwmax
= params
->cw_max
;
1825 qi
.tqi_burstTime
= params
->txop
;
1827 ath_dbg(common
, CONFIG
,
1828 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1829 queue
, txq
->axq_qnum
, params
->aifs
, params
->cw_min
,
1830 params
->cw_max
, params
->txop
);
1832 ret
= ath_txq_update(sc
, txq
->axq_qnum
, &qi
);
1834 ath_err(common
, "TXQ Update failed\n");
1836 if (sc
->sc_ah
->opmode
== NL80211_IFTYPE_ADHOC
)
1837 if (queue
== WME_AC_BE
&& !ret
)
1838 ath_beaconq_config(sc
);
1840 mutex_unlock(&sc
->mutex
);
1841 ath9k_ps_restore(sc
);
1846 static int ath9k_set_key(struct ieee80211_hw
*hw
,
1847 enum set_key_cmd cmd
,
1848 struct ieee80211_vif
*vif
,
1849 struct ieee80211_sta
*sta
,
1850 struct ieee80211_key_conf
*key
)
1852 struct ath_softc
*sc
= hw
->priv
;
1853 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1856 if (ath9k_modparam_nohwcrypt
)
1859 if ((vif
->type
== NL80211_IFTYPE_ADHOC
||
1860 vif
->type
== NL80211_IFTYPE_MESH_POINT
) &&
1861 (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
||
1862 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
) &&
1863 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
1865 * For now, disable hw crypto for the RSN IBSS group keys. This
1866 * could be optimized in the future to use a modified key cache
1867 * design to support per-STA RX GTK, but until that gets
1868 * implemented, use of software crypto for group addressed
1869 * frames is a acceptable to allow RSN IBSS to be used.
1874 mutex_lock(&sc
->mutex
);
1875 ath9k_ps_wakeup(sc
);
1876 ath_dbg(common
, CONFIG
, "Set HW Key\n");
1881 ath9k_del_ps_key(sc
, vif
, sta
);
1883 ret
= ath_key_config(common
, vif
, sta
, key
);
1885 key
->hw_key_idx
= ret
;
1886 /* push IV and Michael MIC generation to stack */
1887 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
1888 if (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
)
1889 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
1890 if (sc
->sc_ah
->sw_mgmt_crypto
&&
1891 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
)
1892 key
->flags
|= IEEE80211_KEY_FLAG_SW_MGMT
;
1897 ath_key_delete(common
, key
);
1903 ath9k_ps_restore(sc
);
1904 mutex_unlock(&sc
->mutex
);
1908 static void ath9k_bss_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
1910 struct ath_softc
*sc
= data
;
1911 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1912 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1913 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1916 * Skip iteration if primary station vif's bss info
1919 if (sc
->sc_flags
& SC_OP_PRIM_STA_VIF
)
1922 if (bss_conf
->assoc
) {
1923 sc
->sc_flags
|= SC_OP_PRIM_STA_VIF
;
1924 avp
->primary_sta_vif
= true;
1925 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
1926 common
->curaid
= bss_conf
->aid
;
1927 ath9k_hw_write_associd(sc
->sc_ah
);
1928 ath_dbg(common
, CONFIG
, "Bss Info ASSOC %d, bssid: %pM\n",
1929 bss_conf
->aid
, common
->curbssid
);
1930 ath_beacon_config(sc
, vif
);
1932 * Request a re-configuration of Beacon related timers
1933 * on the receipt of the first Beacon frame (i.e.,
1934 * after time sync with the AP).
1936 sc
->ps_flags
|= PS_BEACON_SYNC
| PS_WAIT_FOR_BEACON
;
1937 /* Reset rssi stats */
1938 sc
->last_rssi
= ATH_RSSI_DUMMY_MARKER
;
1939 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
1941 ath_start_rx_poll(sc
, 3);
1943 if (!common
->disable_ani
) {
1944 sc
->sc_flags
|= SC_OP_ANI_RUN
;
1945 ath_start_ani(common
);
1951 static void ath9k_config_bss(struct ath_softc
*sc
, struct ieee80211_vif
*vif
)
1953 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1954 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1955 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1957 if (sc
->sc_ah
->opmode
!= NL80211_IFTYPE_STATION
)
1960 /* Reconfigure bss info */
1961 if (avp
->primary_sta_vif
&& !bss_conf
->assoc
) {
1962 ath_dbg(common
, CONFIG
, "Bss Info DISASSOC %d, bssid %pM\n",
1963 common
->curaid
, common
->curbssid
);
1964 sc
->sc_flags
&= ~(SC_OP_PRIM_STA_VIF
| SC_OP_BEACONS
);
1965 avp
->primary_sta_vif
= false;
1966 memset(common
->curbssid
, 0, ETH_ALEN
);
1970 ieee80211_iterate_active_interfaces_atomic(
1971 sc
->hw
, ath9k_bss_iter
, sc
);
1974 * None of station vifs are associated.
1977 if (!(sc
->sc_flags
& SC_OP_PRIM_STA_VIF
)) {
1978 ath9k_hw_write_associd(sc
->sc_ah
);
1980 sc
->sc_flags
&= ~SC_OP_ANI_RUN
;
1981 del_timer_sync(&common
->ani
.timer
);
1982 del_timer_sync(&sc
->rx_poll_timer
);
1983 memset(&sc
->caldata
, 0, sizeof(sc
->caldata
));
1987 static void ath9k_bss_info_changed(struct ieee80211_hw
*hw
,
1988 struct ieee80211_vif
*vif
,
1989 struct ieee80211_bss_conf
*bss_conf
,
1992 struct ath_softc
*sc
= hw
->priv
;
1993 struct ath_hw
*ah
= sc
->sc_ah
;
1994 struct ath_common
*common
= ath9k_hw_common(ah
);
1995 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1998 ath9k_ps_wakeup(sc
);
1999 mutex_lock(&sc
->mutex
);
2001 if (changed
& BSS_CHANGED_ASSOC
) {
2002 ath9k_config_bss(sc
, vif
);
2004 ath_dbg(common
, CONFIG
, "BSSID: %pM aid: 0x%x\n",
2005 common
->curbssid
, common
->curaid
);
2008 if (changed
& BSS_CHANGED_IBSS
) {
2009 /* There can be only one vif available */
2010 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
2011 common
->curaid
= bss_conf
->aid
;
2012 ath9k_hw_write_associd(sc
->sc_ah
);
2014 if (bss_conf
->ibss_joined
) {
2015 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
2017 if (!common
->disable_ani
) {
2018 sc
->sc_flags
|= SC_OP_ANI_RUN
;
2019 ath_start_ani(common
);
2023 sc
->sc_flags
&= ~SC_OP_ANI_RUN
;
2024 del_timer_sync(&common
->ani
.timer
);
2025 del_timer_sync(&sc
->rx_poll_timer
);
2030 * In case of AP mode, the HW TSF has to be reset
2031 * when the beacon interval changes.
2033 if ((changed
& BSS_CHANGED_BEACON_INT
) &&
2034 (vif
->type
== NL80211_IFTYPE_AP
))
2035 sc
->sc_flags
|= SC_OP_TSF_RESET
;
2037 /* Configure beaconing (AP, IBSS, MESH) */
2038 if (ath9k_uses_beacons(vif
->type
) &&
2039 ((changed
& BSS_CHANGED_BEACON
) ||
2040 (changed
& BSS_CHANGED_BEACON_ENABLED
) ||
2041 (changed
& BSS_CHANGED_BEACON_INT
))) {
2042 ath9k_set_beaconing_status(sc
, false);
2043 if (bss_conf
->enable_beacon
)
2044 ath_beacon_alloc(sc
, vif
);
2046 avp
->is_bslot_active
= false;
2047 ath_beacon_config(sc
, vif
);
2048 ath9k_set_beaconing_status(sc
, true);
2051 if (changed
& BSS_CHANGED_ERP_SLOT
) {
2052 if (bss_conf
->use_short_slot
)
2056 if (vif
->type
== NL80211_IFTYPE_AP
) {
2058 * Defer update, so that connected stations can adjust
2059 * their settings at the same time.
2060 * See beacon.c for more details
2062 sc
->beacon
.slottime
= slottime
;
2063 sc
->beacon
.updateslot
= UPDATE
;
2065 ah
->slottime
= slottime
;
2066 ath9k_hw_init_global_settings(ah
);
2070 mutex_unlock(&sc
->mutex
);
2071 ath9k_ps_restore(sc
);
2074 static u64
ath9k_get_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
2076 struct ath_softc
*sc
= hw
->priv
;
2079 mutex_lock(&sc
->mutex
);
2080 ath9k_ps_wakeup(sc
);
2081 tsf
= ath9k_hw_gettsf64(sc
->sc_ah
);
2082 ath9k_ps_restore(sc
);
2083 mutex_unlock(&sc
->mutex
);
2088 static void ath9k_set_tsf(struct ieee80211_hw
*hw
,
2089 struct ieee80211_vif
*vif
,
2092 struct ath_softc
*sc
= hw
->priv
;
2094 mutex_lock(&sc
->mutex
);
2095 ath9k_ps_wakeup(sc
);
2096 ath9k_hw_settsf64(sc
->sc_ah
, tsf
);
2097 ath9k_ps_restore(sc
);
2098 mutex_unlock(&sc
->mutex
);
2101 static void ath9k_reset_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
2103 struct ath_softc
*sc
= hw
->priv
;
2105 mutex_lock(&sc
->mutex
);
2107 ath9k_ps_wakeup(sc
);
2108 ath9k_hw_reset_tsf(sc
->sc_ah
);
2109 ath9k_ps_restore(sc
);
2111 mutex_unlock(&sc
->mutex
);
2114 static int ath9k_ampdu_action(struct ieee80211_hw
*hw
,
2115 struct ieee80211_vif
*vif
,
2116 enum ieee80211_ampdu_mlme_action action
,
2117 struct ieee80211_sta
*sta
,
2118 u16 tid
, u16
*ssn
, u8 buf_size
)
2120 struct ath_softc
*sc
= hw
->priv
;
2126 case IEEE80211_AMPDU_RX_START
:
2128 case IEEE80211_AMPDU_RX_STOP
:
2130 case IEEE80211_AMPDU_TX_START
:
2131 ath9k_ps_wakeup(sc
);
2132 ret
= ath_tx_aggr_start(sc
, sta
, tid
, ssn
);
2134 ieee80211_start_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
2135 ath9k_ps_restore(sc
);
2137 case IEEE80211_AMPDU_TX_STOP
:
2138 ath9k_ps_wakeup(sc
);
2139 ath_tx_aggr_stop(sc
, sta
, tid
);
2140 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
2141 ath9k_ps_restore(sc
);
2143 case IEEE80211_AMPDU_TX_OPERATIONAL
:
2144 ath9k_ps_wakeup(sc
);
2145 ath_tx_aggr_resume(sc
, sta
, tid
);
2146 ath9k_ps_restore(sc
);
2149 ath_err(ath9k_hw_common(sc
->sc_ah
), "Unknown AMPDU action\n");
2157 static int ath9k_get_survey(struct ieee80211_hw
*hw
, int idx
,
2158 struct survey_info
*survey
)
2160 struct ath_softc
*sc
= hw
->priv
;
2161 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2162 struct ieee80211_supported_band
*sband
;
2163 struct ieee80211_channel
*chan
;
2164 unsigned long flags
;
2167 spin_lock_irqsave(&common
->cc_lock
, flags
);
2169 ath_update_survey_stats(sc
);
2171 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
];
2172 if (sband
&& idx
>= sband
->n_channels
) {
2173 idx
-= sband
->n_channels
;
2178 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
];
2180 if (!sband
|| idx
>= sband
->n_channels
) {
2181 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
2185 chan
= &sband
->channels
[idx
];
2186 pos
= chan
->hw_value
;
2187 memcpy(survey
, &sc
->survey
[pos
], sizeof(*survey
));
2188 survey
->channel
= chan
;
2189 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
2194 static void ath9k_set_coverage_class(struct ieee80211_hw
*hw
, u8 coverage_class
)
2196 struct ath_softc
*sc
= hw
->priv
;
2197 struct ath_hw
*ah
= sc
->sc_ah
;
2199 mutex_lock(&sc
->mutex
);
2200 ah
->coverage_class
= coverage_class
;
2202 ath9k_ps_wakeup(sc
);
2203 ath9k_hw_init_global_settings(ah
);
2204 ath9k_ps_restore(sc
);
2206 mutex_unlock(&sc
->mutex
);
2209 static void ath9k_flush(struct ieee80211_hw
*hw
, bool drop
)
2211 struct ath_softc
*sc
= hw
->priv
;
2212 struct ath_hw
*ah
= sc
->sc_ah
;
2213 struct ath_common
*common
= ath9k_hw_common(ah
);
2214 int timeout
= 200; /* ms */
2218 mutex_lock(&sc
->mutex
);
2219 cancel_delayed_work_sync(&sc
->tx_complete_work
);
2221 if (ah
->ah_flags
& AH_UNPLUGGED
) {
2222 ath_dbg(common
, ANY
, "Device has been unplugged!\n");
2223 mutex_unlock(&sc
->mutex
);
2227 if (sc
->sc_flags
& SC_OP_INVALID
) {
2228 ath_dbg(common
, ANY
, "Device not present\n");
2229 mutex_unlock(&sc
->mutex
);
2233 for (j
= 0; j
< timeout
; j
++) {
2237 usleep_range(1000, 2000);
2239 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
2240 if (!ATH_TXQ_SETUP(sc
, i
))
2243 npend
= ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]);
2254 ath9k_ps_wakeup(sc
);
2255 spin_lock_bh(&sc
->sc_pcu_lock
);
2256 drain_txq
= ath_drain_all_txq(sc
, false);
2257 spin_unlock_bh(&sc
->sc_pcu_lock
);
2260 ath_reset(sc
, false);
2262 ath9k_ps_restore(sc
);
2263 ieee80211_wake_queues(hw
);
2266 ieee80211_queue_delayed_work(hw
, &sc
->tx_complete_work
, 0);
2267 mutex_unlock(&sc
->mutex
);
2270 static bool ath9k_tx_frames_pending(struct ieee80211_hw
*hw
)
2272 struct ath_softc
*sc
= hw
->priv
;
2275 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
2276 if (!ATH_TXQ_SETUP(sc
, i
))
2279 if (ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]))
2285 static int ath9k_tx_last_beacon(struct ieee80211_hw
*hw
)
2287 struct ath_softc
*sc
= hw
->priv
;
2288 struct ath_hw
*ah
= sc
->sc_ah
;
2289 struct ieee80211_vif
*vif
;
2290 struct ath_vif
*avp
;
2292 struct ath_tx_status ts
;
2293 bool edma
= !!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
);
2296 vif
= sc
->beacon
.bslot
[0];
2300 avp
= (void *)vif
->drv_priv
;
2301 if (!avp
->is_bslot_active
)
2304 if (!sc
->beacon
.tx_processed
&& !edma
) {
2305 tasklet_disable(&sc
->bcon_tasklet
);
2308 if (!bf
|| !bf
->bf_mpdu
)
2311 status
= ath9k_hw_txprocdesc(ah
, bf
->bf_desc
, &ts
);
2312 if (status
== -EINPROGRESS
)
2315 sc
->beacon
.tx_processed
= true;
2316 sc
->beacon
.tx_last
= !(ts
.ts_status
& ATH9K_TXERR_MASK
);
2319 tasklet_enable(&sc
->bcon_tasklet
);
2322 return sc
->beacon
.tx_last
;
2325 static int ath9k_get_stats(struct ieee80211_hw
*hw
,
2326 struct ieee80211_low_level_stats
*stats
)
2328 struct ath_softc
*sc
= hw
->priv
;
2329 struct ath_hw
*ah
= sc
->sc_ah
;
2330 struct ath9k_mib_stats
*mib_stats
= &ah
->ah_mibStats
;
2332 stats
->dot11ACKFailureCount
= mib_stats
->ackrcv_bad
;
2333 stats
->dot11RTSFailureCount
= mib_stats
->rts_bad
;
2334 stats
->dot11FCSErrorCount
= mib_stats
->fcs_bad
;
2335 stats
->dot11RTSSuccessCount
= mib_stats
->rts_good
;
2339 static u32
fill_chainmask(u32 cap
, u32
new)
2344 for (i
= 0; cap
&& new; i
++, cap
>>= 1) {
2345 if (!(cap
& BIT(0)))
2357 static int ath9k_set_antenna(struct ieee80211_hw
*hw
, u32 tx_ant
, u32 rx_ant
)
2359 struct ath_softc
*sc
= hw
->priv
;
2360 struct ath_hw
*ah
= sc
->sc_ah
;
2362 if (!rx_ant
|| !tx_ant
)
2365 sc
->ant_rx
= rx_ant
;
2366 sc
->ant_tx
= tx_ant
;
2368 if (ah
->caps
.rx_chainmask
== 1)
2371 /* AR9100 runs into calibration issues if not all rx chains are enabled */
2372 if (AR_SREV_9100(ah
))
2373 ah
->rxchainmask
= 0x7;
2375 ah
->rxchainmask
= fill_chainmask(ah
->caps
.rx_chainmask
, rx_ant
);
2377 ah
->txchainmask
= fill_chainmask(ah
->caps
.tx_chainmask
, tx_ant
);
2378 ath9k_reload_chainmask_settings(sc
);
2383 static int ath9k_get_antenna(struct ieee80211_hw
*hw
, u32
*tx_ant
, u32
*rx_ant
)
2385 struct ath_softc
*sc
= hw
->priv
;
2387 *tx_ant
= sc
->ant_tx
;
2388 *rx_ant
= sc
->ant_rx
;
2392 struct ieee80211_ops ath9k_ops
= {
2394 .start
= ath9k_start
,
2396 .add_interface
= ath9k_add_interface
,
2397 .change_interface
= ath9k_change_interface
,
2398 .remove_interface
= ath9k_remove_interface
,
2399 .config
= ath9k_config
,
2400 .configure_filter
= ath9k_configure_filter
,
2401 .sta_add
= ath9k_sta_add
,
2402 .sta_remove
= ath9k_sta_remove
,
2403 .sta_notify
= ath9k_sta_notify
,
2404 .conf_tx
= ath9k_conf_tx
,
2405 .bss_info_changed
= ath9k_bss_info_changed
,
2406 .set_key
= ath9k_set_key
,
2407 .get_tsf
= ath9k_get_tsf
,
2408 .set_tsf
= ath9k_set_tsf
,
2409 .reset_tsf
= ath9k_reset_tsf
,
2410 .ampdu_action
= ath9k_ampdu_action
,
2411 .get_survey
= ath9k_get_survey
,
2412 .rfkill_poll
= ath9k_rfkill_poll_state
,
2413 .set_coverage_class
= ath9k_set_coverage_class
,
2414 .flush
= ath9k_flush
,
2415 .tx_frames_pending
= ath9k_tx_frames_pending
,
2416 .tx_last_beacon
= ath9k_tx_last_beacon
,
2417 .get_stats
= ath9k_get_stats
,
2418 .set_antenna
= ath9k_set_antenna
,
2419 .get_antenna
= ath9k_get_antenna
,