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
;
117 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
118 if (--sc
->ps_usecount
!= 0)
122 mode
= ATH9K_PM_FULL_SLEEP
;
123 else if (sc
->ps_enabled
&&
124 !(sc
->ps_flags
& (PS_WAIT_FOR_BEACON
|
126 PS_WAIT_FOR_PSPOLL_DATA
|
127 PS_WAIT_FOR_TX_ACK
)))
128 mode
= ATH9K_PM_NETWORK_SLEEP
;
132 spin_lock(&common
->cc_lock
);
133 ath_hw_cycle_counters_update(common
);
134 spin_unlock(&common
->cc_lock
);
136 ath9k_hw_setpower(sc
->sc_ah
, mode
);
139 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
142 void ath_start_ani(struct ath_common
*common
)
144 struct ath_hw
*ah
= common
->ah
;
145 unsigned long timestamp
= jiffies_to_msecs(jiffies
);
146 struct ath_softc
*sc
= (struct ath_softc
*) common
->priv
;
148 if (!(sc
->sc_flags
& SC_OP_ANI_RUN
))
151 if (sc
->sc_flags
& SC_OP_OFFCHANNEL
)
154 common
->ani
.longcal_timer
= timestamp
;
155 common
->ani
.shortcal_timer
= timestamp
;
156 common
->ani
.checkani_timer
= timestamp
;
158 mod_timer(&common
->ani
.timer
,
160 msecs_to_jiffies((u32
)ah
->config
.ani_poll_interval
));
163 static void ath_update_survey_nf(struct ath_softc
*sc
, int channel
)
165 struct ath_hw
*ah
= sc
->sc_ah
;
166 struct ath9k_channel
*chan
= &ah
->channels
[channel
];
167 struct survey_info
*survey
= &sc
->survey
[channel
];
169 if (chan
->noisefloor
) {
170 survey
->filled
|= SURVEY_INFO_NOISE_DBM
;
171 survey
->noise
= ath9k_hw_getchan_noise(ah
, chan
);
176 * Updates the survey statistics and returns the busy time since last
177 * update in %, if the measurement duration was long enough for the
178 * result to be useful, -1 otherwise.
180 static int ath_update_survey_stats(struct ath_softc
*sc
)
182 struct ath_hw
*ah
= sc
->sc_ah
;
183 struct ath_common
*common
= ath9k_hw_common(ah
);
184 int pos
= ah
->curchan
- &ah
->channels
[0];
185 struct survey_info
*survey
= &sc
->survey
[pos
];
186 struct ath_cycle_counters
*cc
= &common
->cc_survey
;
187 unsigned int div
= common
->clockrate
* 1000;
193 if (ah
->power_mode
== ATH9K_PM_AWAKE
)
194 ath_hw_cycle_counters_update(common
);
196 if (cc
->cycles
> 0) {
197 survey
->filled
|= SURVEY_INFO_CHANNEL_TIME
|
198 SURVEY_INFO_CHANNEL_TIME_BUSY
|
199 SURVEY_INFO_CHANNEL_TIME_RX
|
200 SURVEY_INFO_CHANNEL_TIME_TX
;
201 survey
->channel_time
+= cc
->cycles
/ div
;
202 survey
->channel_time_busy
+= cc
->rx_busy
/ div
;
203 survey
->channel_time_rx
+= cc
->rx_frame
/ div
;
204 survey
->channel_time_tx
+= cc
->tx_frame
/ div
;
207 if (cc
->cycles
< div
)
211 ret
= cc
->rx_busy
* 100 / cc
->cycles
;
213 memset(cc
, 0, sizeof(*cc
));
215 ath_update_survey_nf(sc
, pos
);
220 static void __ath_cancel_work(struct ath_softc
*sc
)
222 cancel_work_sync(&sc
->paprd_work
);
223 cancel_work_sync(&sc
->hw_check_work
);
224 cancel_delayed_work_sync(&sc
->tx_complete_work
);
225 cancel_delayed_work_sync(&sc
->hw_pll_work
);
228 static void ath_cancel_work(struct ath_softc
*sc
)
230 __ath_cancel_work(sc
);
231 cancel_work_sync(&sc
->hw_reset_work
);
234 static bool ath_prepare_reset(struct ath_softc
*sc
, bool retry_tx
, bool flush
)
236 struct ath_hw
*ah
= sc
->sc_ah
;
237 struct ath_common
*common
= ath9k_hw_common(ah
);
240 ieee80211_stop_queues(sc
->hw
);
242 sc
->hw_busy_count
= 0;
243 del_timer_sync(&common
->ani
.timer
);
245 ath9k_debug_samp_bb_mac(sc
);
246 ath9k_hw_disable_interrupts(ah
);
248 ret
= ath_drain_all_txq(sc
, retry_tx
);
250 if (!ath_stoprecv(sc
))
254 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
255 ath_rx_tasklet(sc
, 1, true);
256 ath_rx_tasklet(sc
, 1, false);
264 static bool ath_complete_reset(struct ath_softc
*sc
, bool start
)
266 struct ath_hw
*ah
= sc
->sc_ah
;
267 struct ath_common
*common
= ath9k_hw_common(ah
);
269 if (ath_startrecv(sc
) != 0) {
270 ath_err(common
, "Unable to restart recv logic\n");
274 ath9k_cmn_update_txpow(ah
, sc
->curtxpow
,
275 sc
->config
.txpowlimit
, &sc
->curtxpow
);
276 ath9k_hw_set_interrupts(ah
, ah
->imask
);
277 ath9k_hw_enable_interrupts(ah
);
279 if (!(sc
->sc_flags
& (SC_OP_OFFCHANNEL
)) && start
) {
280 if (sc
->sc_flags
& SC_OP_BEACONS
)
283 ieee80211_queue_delayed_work(sc
->hw
, &sc
->tx_complete_work
, 0);
284 ieee80211_queue_delayed_work(sc
->hw
, &sc
->hw_pll_work
, HZ
/2);
285 if (!common
->disable_ani
)
286 ath_start_ani(common
);
289 if (ath9k_hw_ops(ah
)->antdiv_comb_conf_get
&& sc
->ant_rx
!= 3) {
290 struct ath_hw_antcomb_conf div_ant_conf
;
293 ath9k_hw_antdiv_comb_conf_get(ah
, &div_ant_conf
);
296 lna_conf
= ATH_ANT_DIV_COMB_LNA1
;
298 lna_conf
= ATH_ANT_DIV_COMB_LNA2
;
299 div_ant_conf
.main_lna_conf
= lna_conf
;
300 div_ant_conf
.alt_lna_conf
= lna_conf
;
302 ath9k_hw_antdiv_comb_conf_set(ah
, &div_ant_conf
);
305 ieee80211_wake_queues(sc
->hw
);
310 static int ath_reset_internal(struct ath_softc
*sc
, struct ath9k_channel
*hchan
,
313 struct ath_hw
*ah
= sc
->sc_ah
;
314 struct ath_common
*common
= ath9k_hw_common(ah
);
315 struct ath9k_hw_cal_data
*caldata
= NULL
;
320 __ath_cancel_work(sc
);
322 spin_lock_bh(&sc
->sc_pcu_lock
);
324 if (!(sc
->sc_flags
& SC_OP_OFFCHANNEL
)) {
326 caldata
= &sc
->caldata
;
335 if (fastcc
&& !ath9k_hw_check_alive(ah
))
338 if (!ath_prepare_reset(sc
, retry_tx
, flush
))
341 ath_dbg(common
, ATH_DBG_CONFIG
,
342 "Reset to %u MHz, HT40: %d fastcc: %d\n",
343 hchan
->channel
, !!(hchan
->channelFlags
& (CHANNEL_HT40MINUS
|
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
)
378 r
= ath_reset_internal(sc
, hchan
, false);
380 ath9k_ps_restore(sc
);
385 static void ath_paprd_activate(struct ath_softc
*sc
)
387 struct ath_hw
*ah
= sc
->sc_ah
;
388 struct ath9k_hw_cal_data
*caldata
= ah
->caldata
;
391 if (!caldata
|| !caldata
->paprd_done
)
395 ar9003_paprd_enable(ah
, false);
396 for (chain
= 0; chain
< AR9300_MAX_CHAINS
; chain
++) {
397 if (!(ah
->txchainmask
& BIT(chain
)))
400 ar9003_paprd_populate_single_table(ah
, caldata
, chain
);
403 ar9003_paprd_enable(ah
, true);
404 ath9k_ps_restore(sc
);
407 static bool ath_paprd_send_frame(struct ath_softc
*sc
, struct sk_buff
*skb
, int chain
)
409 struct ieee80211_hw
*hw
= sc
->hw
;
410 struct ieee80211_tx_info
*tx_info
= IEEE80211_SKB_CB(skb
);
411 struct ath_hw
*ah
= sc
->sc_ah
;
412 struct ath_common
*common
= ath9k_hw_common(ah
);
413 struct ath_tx_control txctl
;
416 memset(&txctl
, 0, sizeof(txctl
));
417 txctl
.txq
= sc
->tx
.txq_map
[WME_AC_BE
];
419 memset(tx_info
, 0, sizeof(*tx_info
));
420 tx_info
->band
= hw
->conf
.channel
->band
;
421 tx_info
->flags
|= IEEE80211_TX_CTL_NO_ACK
;
422 tx_info
->control
.rates
[0].idx
= 0;
423 tx_info
->control
.rates
[0].count
= 1;
424 tx_info
->control
.rates
[0].flags
= IEEE80211_TX_RC_MCS
;
425 tx_info
->control
.rates
[1].idx
= -1;
427 init_completion(&sc
->paprd_complete
);
428 txctl
.paprd
= BIT(chain
);
430 if (ath_tx_start(hw
, skb
, &txctl
) != 0) {
431 ath_dbg(common
, ATH_DBG_CALIBRATE
, "PAPRD TX failed\n");
432 dev_kfree_skb_any(skb
);
436 time_left
= wait_for_completion_timeout(&sc
->paprd_complete
,
437 msecs_to_jiffies(ATH_PAPRD_TIMEOUT
));
440 ath_dbg(common
, ATH_DBG_CALIBRATE
,
441 "Timeout waiting for paprd training on TX chain %d\n",
447 void ath_paprd_calibrate(struct work_struct
*work
)
449 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, paprd_work
);
450 struct ieee80211_hw
*hw
= sc
->hw
;
451 struct ath_hw
*ah
= sc
->sc_ah
;
452 struct ieee80211_hdr
*hdr
;
453 struct sk_buff
*skb
= NULL
;
454 struct ath9k_hw_cal_data
*caldata
= ah
->caldata
;
455 struct ath_common
*common
= ath9k_hw_common(ah
);
466 if (ar9003_paprd_init_table(ah
) < 0)
469 skb
= alloc_skb(len
, GFP_KERNEL
);
474 memset(skb
->data
, 0, len
);
475 hdr
= (struct ieee80211_hdr
*)skb
->data
;
476 ftype
= IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
;
477 hdr
->frame_control
= cpu_to_le16(ftype
);
478 hdr
->duration_id
= cpu_to_le16(10);
479 memcpy(hdr
->addr1
, hw
->wiphy
->perm_addr
, ETH_ALEN
);
480 memcpy(hdr
->addr2
, hw
->wiphy
->perm_addr
, ETH_ALEN
);
481 memcpy(hdr
->addr3
, hw
->wiphy
->perm_addr
, ETH_ALEN
);
483 for (chain
= 0; chain
< AR9300_MAX_CHAINS
; chain
++) {
484 if (!(ah
->txchainmask
& BIT(chain
)))
489 ath_dbg(common
, ATH_DBG_CALIBRATE
,
490 "Sending PAPRD frame for thermal measurement "
491 "on chain %d\n", chain
);
492 if (!ath_paprd_send_frame(sc
, skb
, chain
))
495 ar9003_paprd_setup_gain_table(ah
, chain
);
497 ath_dbg(common
, ATH_DBG_CALIBRATE
,
498 "Sending PAPRD training frame on chain %d\n", chain
);
499 if (!ath_paprd_send_frame(sc
, skb
, chain
))
502 if (!ar9003_paprd_is_done(ah
)) {
503 ath_dbg(common
, ATH_DBG_CALIBRATE
,
504 "PAPRD not yet done on chain %d\n", chain
);
508 if (ar9003_paprd_create_curve(ah
, caldata
, chain
)) {
509 ath_dbg(common
, ATH_DBG_CALIBRATE
,
510 "PAPRD create curve failed on chain %d\n",
520 caldata
->paprd_done
= true;
521 ath_paprd_activate(sc
);
525 ath9k_ps_restore(sc
);
529 * This routine performs the periodic noise floor calibration function
530 * that is used to adjust and optimize the chip performance. This
531 * takes environmental changes (location, temperature) into account.
532 * When the task is complete, it reschedules itself depending on the
533 * appropriate interval that was calculated.
535 void ath_ani_calibrate(unsigned long data
)
537 struct ath_softc
*sc
= (struct ath_softc
*)data
;
538 struct ath_hw
*ah
= sc
->sc_ah
;
539 struct ath_common
*common
= ath9k_hw_common(ah
);
540 bool longcal
= false;
541 bool shortcal
= false;
542 bool aniflag
= false;
543 unsigned int timestamp
= jiffies_to_msecs(jiffies
);
544 u32 cal_interval
, short_cal_interval
, long_cal_interval
;
547 if (ah
->caldata
&& ah
->caldata
->nfcal_interference
)
548 long_cal_interval
= ATH_LONG_CALINTERVAL_INT
;
550 long_cal_interval
= ATH_LONG_CALINTERVAL
;
552 short_cal_interval
= (ah
->opmode
== NL80211_IFTYPE_AP
) ?
553 ATH_AP_SHORT_CALINTERVAL
: ATH_STA_SHORT_CALINTERVAL
;
555 /* Only calibrate if awake */
556 if (sc
->sc_ah
->power_mode
!= ATH9K_PM_AWAKE
)
561 /* Long calibration runs independently of short calibration. */
562 if ((timestamp
- common
->ani
.longcal_timer
) >= long_cal_interval
) {
564 ath_dbg(common
, ATH_DBG_ANI
, "longcal @%lu\n", jiffies
);
565 common
->ani
.longcal_timer
= timestamp
;
568 /* Short calibration applies only while caldone is false */
569 if (!common
->ani
.caldone
) {
570 if ((timestamp
- common
->ani
.shortcal_timer
) >= short_cal_interval
) {
572 ath_dbg(common
, ATH_DBG_ANI
,
573 "shortcal @%lu\n", jiffies
);
574 common
->ani
.shortcal_timer
= timestamp
;
575 common
->ani
.resetcal_timer
= timestamp
;
578 if ((timestamp
- common
->ani
.resetcal_timer
) >=
579 ATH_RESTART_CALINTERVAL
) {
580 common
->ani
.caldone
= ath9k_hw_reset_calvalid(ah
);
581 if (common
->ani
.caldone
)
582 common
->ani
.resetcal_timer
= timestamp
;
586 /* Verify whether we must check ANI */
587 if ((timestamp
- common
->ani
.checkani_timer
) >=
588 ah
->config
.ani_poll_interval
) {
590 common
->ani
.checkani_timer
= timestamp
;
593 /* Call ANI routine if necessary */
595 spin_lock_irqsave(&common
->cc_lock
, flags
);
596 ath9k_hw_ani_monitor(ah
, ah
->curchan
);
597 ath_update_survey_stats(sc
);
598 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
601 /* Perform calibration if necessary */
602 if (longcal
|| shortcal
) {
603 common
->ani
.caldone
=
604 ath9k_hw_calibrate(ah
, ah
->curchan
,
605 ah
->rxchainmask
, longcal
);
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
)
636 an
= (struct ath_node
*)sta
->drv_priv
;
638 #ifdef CONFIG_ATH9K_DEBUGFS
639 spin_lock(&sc
->nodes_lock
);
640 list_add(&an
->list
, &sc
->nodes
);
641 spin_unlock(&sc
->nodes_lock
);
644 if (sc
->sc_flags
& SC_OP_TXAGGR
) {
645 ath_tx_node_init(sc
, an
);
646 an
->maxampdu
= 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR
+
647 sta
->ht_cap
.ampdu_factor
);
648 an
->mpdudensity
= parse_mpdudensity(sta
->ht_cap
.ampdu_density
);
652 static void ath_node_detach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
)
654 struct ath_node
*an
= (struct ath_node
*)sta
->drv_priv
;
656 #ifdef CONFIG_ATH9K_DEBUGFS
657 spin_lock(&sc
->nodes_lock
);
659 spin_unlock(&sc
->nodes_lock
);
663 if (sc
->sc_flags
& SC_OP_TXAGGR
)
664 ath_tx_node_cleanup(sc
, an
);
668 void ath9k_tasklet(unsigned long data
)
670 struct ath_softc
*sc
= (struct ath_softc
*)data
;
671 struct ath_hw
*ah
= sc
->sc_ah
;
672 struct ath_common
*common
= ath9k_hw_common(ah
);
674 u32 status
= sc
->intrstatus
;
678 spin_lock(&sc
->sc_pcu_lock
);
680 if ((status
& ATH9K_INT_FATAL
) ||
681 (status
& ATH9K_INT_BB_WATCHDOG
)) {
682 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
687 * Only run the baseband hang check if beacons stop working in AP or
688 * IBSS mode, because it has a high false positive rate. For station
689 * mode it should not be necessary, since the upper layers will detect
690 * this through a beacon miss automatically and the following channel
691 * change will trigger a hardware reset anyway
693 if (ath9k_hw_numtxpending(ah
, sc
->beacon
.beaconq
) != 0 &&
694 !ath9k_hw_check_alive(ah
))
695 ieee80211_queue_work(sc
->hw
, &sc
->hw_check_work
);
697 if ((status
& ATH9K_INT_TSFOOR
) && sc
->ps_enabled
) {
699 * TSF sync does not look correct; remain awake to sync with
702 ath_dbg(common
, ATH_DBG_PS
,
703 "TSFOOR - Sync with next Beacon\n");
704 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
| PS_BEACON_SYNC
;
707 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
708 rxmask
= (ATH9K_INT_RXHP
| ATH9K_INT_RXLP
| ATH9K_INT_RXEOL
|
711 rxmask
= (ATH9K_INT_RX
| ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
713 if (status
& rxmask
) {
714 /* Check for high priority Rx first */
715 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
716 (status
& ATH9K_INT_RXHP
))
717 ath_rx_tasklet(sc
, 0, true);
719 ath_rx_tasklet(sc
, 0, false);
722 if (status
& ATH9K_INT_TX
) {
723 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
724 ath_tx_edma_tasklet(sc
);
729 if (ah
->btcoex_hw
.scheme
== ATH_BTCOEX_CFG_3WIRE
)
730 if (status
& ATH9K_INT_GENTIMER
)
731 ath_gen_timer_isr(sc
->sc_ah
);
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 | \
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
, ah
->imask
);
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 void ath_radio_enable(struct ath_softc
*sc
, struct ieee80211_hw
*hw
)
875 struct ath_hw
*ah
= sc
->sc_ah
;
876 struct ath_common
*common
= ath9k_hw_common(ah
);
877 struct ieee80211_channel
*channel
= hw
->conf
.channel
;
881 spin_lock_bh(&sc
->sc_pcu_lock
);
882 atomic_set(&ah
->intr_ref_cnt
, -1);
884 ath9k_hw_configpcipowersave(ah
, false);
887 ah
->curchan
= ath9k_cmn_get_curchannel(sc
->hw
, ah
);
889 r
= ath9k_hw_reset(ah
, ah
->curchan
, ah
->caldata
, false);
892 "Unable to reset channel (%u MHz), reset status %d\n",
893 channel
->center_freq
, r
);
896 ath_complete_reset(sc
, true);
899 ath9k_hw_cfg_output(ah
, ah
->led_pin
,
900 AR_GPIO_OUTPUT_MUX_AS_OUTPUT
);
901 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 0);
903 spin_unlock_bh(&sc
->sc_pcu_lock
);
905 ath9k_ps_restore(sc
);
908 void ath_radio_disable(struct ath_softc
*sc
, struct ieee80211_hw
*hw
)
910 struct ath_hw
*ah
= sc
->sc_ah
;
911 struct ieee80211_channel
*channel
= hw
->conf
.channel
;
918 spin_lock_bh(&sc
->sc_pcu_lock
);
921 * Keep the LED on when the radio is disabled
922 * during idle unassociated state.
925 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 1);
926 ath9k_hw_cfg_gpio_input(ah
, ah
->led_pin
);
929 ath_prepare_reset(sc
, false, true);
932 ah
->curchan
= ath9k_cmn_get_curchannel(hw
, ah
);
934 r
= ath9k_hw_reset(ah
, ah
->curchan
, ah
->caldata
, false);
936 ath_err(ath9k_hw_common(sc
->sc_ah
),
937 "Unable to reset channel (%u MHz), reset status %d\n",
938 channel
->center_freq
, r
);
941 ath9k_hw_phy_disable(ah
);
943 ath9k_hw_configpcipowersave(ah
, true);
945 spin_unlock_bh(&sc
->sc_pcu_lock
);
946 ath9k_ps_restore(sc
);
949 static int ath_reset(struct ath_softc
*sc
, bool retry_tx
)
955 r
= ath_reset_internal(sc
, NULL
, retry_tx
);
959 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
960 if (ATH_TXQ_SETUP(sc
, i
)) {
961 spin_lock_bh(&sc
->tx
.txq
[i
].axq_lock
);
962 ath_txq_schedule(sc
, &sc
->tx
.txq
[i
]);
963 spin_unlock_bh(&sc
->tx
.txq
[i
].axq_lock
);
968 ath9k_ps_restore(sc
);
973 void ath_reset_work(struct work_struct
*work
)
975 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, hw_reset_work
);
980 void ath_hw_check(struct work_struct
*work
)
982 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, hw_check_work
);
983 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
988 if (ath9k_hw_check_alive(sc
->sc_ah
))
991 spin_lock_irqsave(&common
->cc_lock
, flags
);
992 busy
= ath_update_survey_stats(sc
);
993 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
995 ath_dbg(common
, ATH_DBG_RESET
, "Possible baseband hang, "
996 "busy=%d (try %d)\n", busy
, sc
->hw_busy_count
+ 1);
998 if (++sc
->hw_busy_count
>= 3)
999 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
1001 } else if (busy
>= 0)
1002 sc
->hw_busy_count
= 0;
1005 ath9k_ps_restore(sc
);
1008 static void ath_hw_pll_rx_hang_check(struct ath_softc
*sc
, u32 pll_sqsum
)
1011 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1013 if (pll_sqsum
>= 0x40000) {
1016 /* Rx is hung for more than 500ms. Reset it */
1017 ath_dbg(common
, ATH_DBG_RESET
,
1018 "Possible RX hang, resetting");
1019 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
1026 void ath_hw_pll_work(struct work_struct
*work
)
1028 struct ath_softc
*sc
= container_of(work
, struct ath_softc
,
1032 if (AR_SREV_9485(sc
->sc_ah
)) {
1034 ath9k_ps_wakeup(sc
);
1035 pll_sqsum
= ar9003_get_pll_sqsum_dvc(sc
->sc_ah
);
1036 ath9k_ps_restore(sc
);
1038 ath_hw_pll_rx_hang_check(sc
, pll_sqsum
);
1040 ieee80211_queue_delayed_work(sc
->hw
, &sc
->hw_pll_work
, HZ
/5);
1044 /**********************/
1045 /* mac80211 callbacks */
1046 /**********************/
1048 static int ath9k_start(struct ieee80211_hw
*hw
)
1050 struct ath_softc
*sc
= hw
->priv
;
1051 struct ath_hw
*ah
= sc
->sc_ah
;
1052 struct ath_common
*common
= ath9k_hw_common(ah
);
1053 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
1054 struct ath9k_channel
*init_channel
;
1057 ath_dbg(common
, ATH_DBG_CONFIG
,
1058 "Starting driver with initial channel: %d MHz\n",
1059 curchan
->center_freq
);
1061 ath9k_ps_wakeup(sc
);
1063 mutex_lock(&sc
->mutex
);
1065 /* setup initial channel */
1066 sc
->chan_idx
= curchan
->hw_value
;
1068 init_channel
= ath9k_cmn_get_curchannel(hw
, ah
);
1070 /* Reset SERDES registers */
1071 ath9k_hw_configpcipowersave(ah
, false);
1074 * The basic interface to setting the hardware in a good
1075 * state is ``reset''. On return the hardware is known to
1076 * be powered up and with interrupts disabled. This must
1077 * be followed by initialization of the appropriate bits
1078 * and then setup of the interrupt mask.
1080 spin_lock_bh(&sc
->sc_pcu_lock
);
1081 r
= ath9k_hw_reset(ah
, init_channel
, ah
->caldata
, false);
1084 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
1085 r
, curchan
->center_freq
);
1086 spin_unlock_bh(&sc
->sc_pcu_lock
);
1090 /* Setup our intr mask. */
1091 ah
->imask
= ATH9K_INT_TX
| ATH9K_INT_RXEOL
|
1092 ATH9K_INT_RXORN
| ATH9K_INT_FATAL
|
1095 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
1096 ah
->imask
|= ATH9K_INT_RXHP
|
1098 ATH9K_INT_BB_WATCHDOG
;
1100 ah
->imask
|= ATH9K_INT_RX
;
1102 ah
->imask
|= ATH9K_INT_GTT
;
1104 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
1105 ah
->imask
|= ATH9K_INT_CST
;
1107 sc
->sc_flags
&= ~SC_OP_INVALID
;
1108 sc
->sc_ah
->is_monitoring
= false;
1110 /* Disable BMISS interrupt when we're not associated */
1111 ah
->imask
&= ~(ATH9K_INT_SWBA
| ATH9K_INT_BMISS
);
1113 if (!ath_complete_reset(sc
, false)) {
1115 spin_unlock_bh(&sc
->sc_pcu_lock
);
1119 spin_unlock_bh(&sc
->sc_pcu_lock
);
1121 if ((ah
->btcoex_hw
.scheme
!= ATH_BTCOEX_CFG_NONE
) &&
1122 !ah
->btcoex_hw
.enabled
) {
1123 ath9k_hw_btcoex_set_weight(ah
, AR_BT_COEX_WGHT
,
1124 AR_STOMP_LOW_WLAN_WGHT
);
1125 ath9k_hw_btcoex_enable(ah
);
1127 if (ah
->btcoex_hw
.scheme
== ATH_BTCOEX_CFG_3WIRE
)
1128 ath9k_btcoex_timer_resume(sc
);
1131 if (ah
->caps
.pcie_lcr_extsync_en
&& common
->bus_ops
->extn_synch_en
)
1132 common
->bus_ops
->extn_synch_en(common
);
1135 mutex_unlock(&sc
->mutex
);
1137 ath9k_ps_restore(sc
);
1142 static void ath9k_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
1144 struct ath_softc
*sc
= hw
->priv
;
1145 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1146 struct ath_tx_control txctl
;
1147 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
1149 if (sc
->ps_enabled
) {
1151 * mac80211 does not set PM field for normal data frames, so we
1152 * need to update that based on the current PS mode.
1154 if (ieee80211_is_data(hdr
->frame_control
) &&
1155 !ieee80211_is_nullfunc(hdr
->frame_control
) &&
1156 !ieee80211_has_pm(hdr
->frame_control
)) {
1157 ath_dbg(common
, ATH_DBG_PS
,
1158 "Add PM=1 for a TX frame while in PS mode\n");
1159 hdr
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
1163 if (unlikely(sc
->sc_ah
->power_mode
!= ATH9K_PM_AWAKE
)) {
1165 * We are using PS-Poll and mac80211 can request TX while in
1166 * power save mode. Need to wake up hardware for the TX to be
1167 * completed and if needed, also for RX of buffered frames.
1169 ath9k_ps_wakeup(sc
);
1170 if (!(sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
1171 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
1172 if (ieee80211_is_pspoll(hdr
->frame_control
)) {
1173 ath_dbg(common
, ATH_DBG_PS
,
1174 "Sending PS-Poll to pick a buffered frame\n");
1175 sc
->ps_flags
|= PS_WAIT_FOR_PSPOLL_DATA
;
1177 ath_dbg(common
, ATH_DBG_PS
,
1178 "Wake up to complete TX\n");
1179 sc
->ps_flags
|= PS_WAIT_FOR_TX_ACK
;
1182 * The actual restore operation will happen only after
1183 * the sc_flags bit is cleared. We are just dropping
1184 * the ps_usecount here.
1186 ath9k_ps_restore(sc
);
1189 memset(&txctl
, 0, sizeof(struct ath_tx_control
));
1190 txctl
.txq
= sc
->tx
.txq_map
[skb_get_queue_mapping(skb
)];
1192 ath_dbg(common
, ATH_DBG_XMIT
, "transmitting packet, skb: %p\n", skb
);
1194 if (ath_tx_start(hw
, skb
, &txctl
) != 0) {
1195 ath_dbg(common
, ATH_DBG_XMIT
, "TX failed\n");
1201 dev_kfree_skb_any(skb
);
1204 static void ath9k_stop(struct ieee80211_hw
*hw
)
1206 struct ath_softc
*sc
= hw
->priv
;
1207 struct ath_hw
*ah
= sc
->sc_ah
;
1208 struct ath_common
*common
= ath9k_hw_common(ah
);
1210 mutex_lock(&sc
->mutex
);
1212 ath_cancel_work(sc
);
1214 if (sc
->sc_flags
& SC_OP_INVALID
) {
1215 ath_dbg(common
, ATH_DBG_ANY
, "Device not present\n");
1216 mutex_unlock(&sc
->mutex
);
1220 /* Ensure HW is awake when we try to shut it down. */
1221 ath9k_ps_wakeup(sc
);
1223 if (ah
->btcoex_hw
.enabled
) {
1224 ath9k_hw_btcoex_disable(ah
);
1225 if (ah
->btcoex_hw
.scheme
== ATH_BTCOEX_CFG_3WIRE
)
1226 ath9k_btcoex_timer_pause(sc
);
1229 spin_lock_bh(&sc
->sc_pcu_lock
);
1231 /* prevent tasklets to enable interrupts once we disable them */
1232 ah
->imask
&= ~ATH9K_INT_GLOBAL
;
1234 /* make sure h/w will not generate any interrupt
1235 * before setting the invalid flag. */
1236 ath9k_hw_disable_interrupts(ah
);
1238 if (!(sc
->sc_flags
& SC_OP_INVALID
)) {
1239 ath_drain_all_txq(sc
, false);
1241 ath9k_hw_phy_disable(ah
);
1243 sc
->rx
.rxlink
= NULL
;
1246 dev_kfree_skb_any(sc
->rx
.frag
);
1250 /* disable HAL and put h/w to sleep */
1251 ath9k_hw_disable(ah
);
1253 spin_unlock_bh(&sc
->sc_pcu_lock
);
1255 /* we can now sync irq and kill any running tasklets, since we already
1256 * disabled interrupts and not holding a spin lock */
1257 synchronize_irq(sc
->irq
);
1258 tasklet_kill(&sc
->intr_tq
);
1259 tasklet_kill(&sc
->bcon_tasklet
);
1261 ath9k_ps_restore(sc
);
1264 ath_radio_disable(sc
, hw
);
1266 sc
->sc_flags
|= SC_OP_INVALID
;
1268 mutex_unlock(&sc
->mutex
);
1270 ath_dbg(common
, ATH_DBG_CONFIG
, "Driver halt\n");
1273 bool ath9k_uses_beacons(int type
)
1276 case NL80211_IFTYPE_AP
:
1277 case NL80211_IFTYPE_ADHOC
:
1278 case NL80211_IFTYPE_MESH_POINT
:
1285 static void ath9k_reclaim_beacon(struct ath_softc
*sc
,
1286 struct ieee80211_vif
*vif
)
1288 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1290 ath9k_set_beaconing_status(sc
, false);
1291 ath_beacon_return(sc
, avp
);
1292 ath9k_set_beaconing_status(sc
, true);
1293 sc
->sc_flags
&= ~SC_OP_BEACONS
;
1296 static void ath9k_vif_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
1298 struct ath9k_vif_iter_data
*iter_data
= data
;
1301 if (iter_data
->hw_macaddr
)
1302 for (i
= 0; i
< ETH_ALEN
; i
++)
1303 iter_data
->mask
[i
] &=
1304 ~(iter_data
->hw_macaddr
[i
] ^ mac
[i
]);
1306 switch (vif
->type
) {
1307 case NL80211_IFTYPE_AP
:
1310 case NL80211_IFTYPE_STATION
:
1311 iter_data
->nstations
++;
1313 case NL80211_IFTYPE_ADHOC
:
1314 iter_data
->nadhocs
++;
1316 case NL80211_IFTYPE_MESH_POINT
:
1317 iter_data
->nmeshes
++;
1319 case NL80211_IFTYPE_WDS
:
1323 iter_data
->nothers
++;
1328 /* Called with sc->mutex held. */
1329 void ath9k_calculate_iter_data(struct ieee80211_hw
*hw
,
1330 struct ieee80211_vif
*vif
,
1331 struct ath9k_vif_iter_data
*iter_data
)
1333 struct ath_softc
*sc
= hw
->priv
;
1334 struct ath_hw
*ah
= sc
->sc_ah
;
1335 struct ath_common
*common
= ath9k_hw_common(ah
);
1338 * Use the hardware MAC address as reference, the hardware uses it
1339 * together with the BSSID mask when matching addresses.
1341 memset(iter_data
, 0, sizeof(*iter_data
));
1342 iter_data
->hw_macaddr
= common
->macaddr
;
1343 memset(&iter_data
->mask
, 0xff, ETH_ALEN
);
1346 ath9k_vif_iter(iter_data
, vif
->addr
, vif
);
1348 /* Get list of all active MAC addresses */
1349 ieee80211_iterate_active_interfaces_atomic(sc
->hw
, ath9k_vif_iter
,
1353 /* Called with sc->mutex held. */
1354 static void ath9k_calculate_summary_state(struct ieee80211_hw
*hw
,
1355 struct ieee80211_vif
*vif
)
1357 struct ath_softc
*sc
= hw
->priv
;
1358 struct ath_hw
*ah
= sc
->sc_ah
;
1359 struct ath_common
*common
= ath9k_hw_common(ah
);
1360 struct ath9k_vif_iter_data iter_data
;
1362 ath9k_calculate_iter_data(hw
, vif
, &iter_data
);
1364 /* Set BSSID mask. */
1365 memcpy(common
->bssidmask
, iter_data
.mask
, ETH_ALEN
);
1366 ath_hw_setbssidmask(common
);
1368 /* Set op-mode & TSF */
1369 if (iter_data
.naps
> 0) {
1370 ath9k_hw_set_tsfadjust(ah
, 1);
1371 sc
->sc_flags
|= SC_OP_TSF_RESET
;
1372 ah
->opmode
= NL80211_IFTYPE_AP
;
1374 ath9k_hw_set_tsfadjust(ah
, 0);
1375 sc
->sc_flags
&= ~SC_OP_TSF_RESET
;
1377 if (iter_data
.nmeshes
)
1378 ah
->opmode
= NL80211_IFTYPE_MESH_POINT
;
1379 else if (iter_data
.nwds
)
1380 ah
->opmode
= NL80211_IFTYPE_AP
;
1381 else if (iter_data
.nadhocs
)
1382 ah
->opmode
= NL80211_IFTYPE_ADHOC
;
1384 ah
->opmode
= NL80211_IFTYPE_STATION
;
1388 * Enable MIB interrupts when there are hardware phy counters.
1390 if ((iter_data
.nstations
+ iter_data
.nadhocs
+ iter_data
.nmeshes
) > 0) {
1391 if (ah
->config
.enable_ani
)
1392 ah
->imask
|= ATH9K_INT_MIB
;
1393 ah
->imask
|= ATH9K_INT_TSFOOR
;
1395 ah
->imask
&= ~ATH9K_INT_MIB
;
1396 ah
->imask
&= ~ATH9K_INT_TSFOOR
;
1399 ath9k_hw_set_interrupts(ah
, ah
->imask
);
1402 if (iter_data
.naps
> 0) {
1403 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
1405 if (!common
->disable_ani
) {
1406 sc
->sc_flags
|= SC_OP_ANI_RUN
;
1407 ath_start_ani(common
);
1411 sc
->sc_flags
&= ~SC_OP_ANI_RUN
;
1412 del_timer_sync(&common
->ani
.timer
);
1416 /* Called with sc->mutex held, vif counts set up properly. */
1417 static void ath9k_do_vif_add_setup(struct ieee80211_hw
*hw
,
1418 struct ieee80211_vif
*vif
)
1420 struct ath_softc
*sc
= hw
->priv
;
1422 ath9k_calculate_summary_state(hw
, vif
);
1424 if (ath9k_uses_beacons(vif
->type
)) {
1426 /* This may fail because upper levels do not have beacons
1427 * properly configured yet. That's OK, we assume it
1428 * will be properly configured and then we will be notified
1429 * in the info_changed method and set up beacons properly
1432 ath9k_set_beaconing_status(sc
, false);
1433 error
= ath_beacon_alloc(sc
, vif
);
1435 ath_beacon_config(sc
, vif
);
1436 ath9k_set_beaconing_status(sc
, true);
1441 static int ath9k_add_interface(struct ieee80211_hw
*hw
,
1442 struct ieee80211_vif
*vif
)
1444 struct ath_softc
*sc
= hw
->priv
;
1445 struct ath_hw
*ah
= sc
->sc_ah
;
1446 struct ath_common
*common
= ath9k_hw_common(ah
);
1449 ath9k_ps_wakeup(sc
);
1450 mutex_lock(&sc
->mutex
);
1452 switch (vif
->type
) {
1453 case NL80211_IFTYPE_STATION
:
1454 case NL80211_IFTYPE_WDS
:
1455 case NL80211_IFTYPE_ADHOC
:
1456 case NL80211_IFTYPE_AP
:
1457 case NL80211_IFTYPE_MESH_POINT
:
1460 ath_err(common
, "Interface type %d not yet supported\n",
1466 if (ath9k_uses_beacons(vif
->type
)) {
1467 if (sc
->nbcnvifs
>= ATH_BCBUF
) {
1468 ath_err(common
, "Not enough beacon buffers when adding"
1469 " new interface of type: %i\n",
1476 if ((ah
->opmode
== NL80211_IFTYPE_ADHOC
) ||
1477 ((vif
->type
== NL80211_IFTYPE_ADHOC
) &&
1479 ath_err(common
, "Cannot create ADHOC interface when other"
1480 " interfaces already exist.\n");
1485 ath_dbg(common
, ATH_DBG_CONFIG
,
1486 "Attach a VIF of type: %d\n", vif
->type
);
1490 ath9k_do_vif_add_setup(hw
, vif
);
1492 mutex_unlock(&sc
->mutex
);
1493 ath9k_ps_restore(sc
);
1497 static int ath9k_change_interface(struct ieee80211_hw
*hw
,
1498 struct ieee80211_vif
*vif
,
1499 enum nl80211_iftype new_type
,
1502 struct ath_softc
*sc
= hw
->priv
;
1503 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1506 ath_dbg(common
, ATH_DBG_CONFIG
, "Change Interface\n");
1507 mutex_lock(&sc
->mutex
);
1508 ath9k_ps_wakeup(sc
);
1510 /* See if new interface type is valid. */
1511 if ((new_type
== NL80211_IFTYPE_ADHOC
) &&
1513 ath_err(common
, "When using ADHOC, it must be the only"
1519 if (ath9k_uses_beacons(new_type
) &&
1520 !ath9k_uses_beacons(vif
->type
)) {
1521 if (sc
->nbcnvifs
>= ATH_BCBUF
) {
1522 ath_err(common
, "No beacon slot available\n");
1528 /* Clean up old vif stuff */
1529 if (ath9k_uses_beacons(vif
->type
))
1530 ath9k_reclaim_beacon(sc
, vif
);
1532 /* Add new settings */
1533 vif
->type
= new_type
;
1536 ath9k_do_vif_add_setup(hw
, vif
);
1538 ath9k_ps_restore(sc
);
1539 mutex_unlock(&sc
->mutex
);
1543 static void ath9k_remove_interface(struct ieee80211_hw
*hw
,
1544 struct ieee80211_vif
*vif
)
1546 struct ath_softc
*sc
= hw
->priv
;
1547 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1549 ath_dbg(common
, ATH_DBG_CONFIG
, "Detach Interface\n");
1551 ath9k_ps_wakeup(sc
);
1552 mutex_lock(&sc
->mutex
);
1556 /* Reclaim beacon resources */
1557 if (ath9k_uses_beacons(vif
->type
))
1558 ath9k_reclaim_beacon(sc
, vif
);
1560 ath9k_calculate_summary_state(hw
, NULL
);
1562 mutex_unlock(&sc
->mutex
);
1563 ath9k_ps_restore(sc
);
1566 static void ath9k_enable_ps(struct ath_softc
*sc
)
1568 struct ath_hw
*ah
= sc
->sc_ah
;
1570 sc
->ps_enabled
= true;
1571 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1572 if ((ah
->imask
& ATH9K_INT_TIM_TIMER
) == 0) {
1573 ah
->imask
|= ATH9K_INT_TIM_TIMER
;
1574 ath9k_hw_set_interrupts(ah
, ah
->imask
);
1576 ath9k_hw_setrxabort(ah
, 1);
1580 static void ath9k_disable_ps(struct ath_softc
*sc
)
1582 struct ath_hw
*ah
= sc
->sc_ah
;
1584 sc
->ps_enabled
= false;
1585 ath9k_hw_setpower(ah
, ATH9K_PM_AWAKE
);
1586 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1587 ath9k_hw_setrxabort(ah
, 0);
1588 sc
->ps_flags
&= ~(PS_WAIT_FOR_BEACON
|
1590 PS_WAIT_FOR_PSPOLL_DATA
|
1591 PS_WAIT_FOR_TX_ACK
);
1592 if (ah
->imask
& ATH9K_INT_TIM_TIMER
) {
1593 ah
->imask
&= ~ATH9K_INT_TIM_TIMER
;
1594 ath9k_hw_set_interrupts(ah
, ah
->imask
);
1600 static int ath9k_config(struct ieee80211_hw
*hw
, u32 changed
)
1602 struct ath_softc
*sc
= hw
->priv
;
1603 struct ath_hw
*ah
= sc
->sc_ah
;
1604 struct ath_common
*common
= ath9k_hw_common(ah
);
1605 struct ieee80211_conf
*conf
= &hw
->conf
;
1606 bool disable_radio
= false;
1608 mutex_lock(&sc
->mutex
);
1611 * Leave this as the first check because we need to turn on the
1612 * radio if it was disabled before prior to processing the rest
1613 * of the changes. Likewise we must only disable the radio towards
1616 if (changed
& IEEE80211_CONF_CHANGE_IDLE
) {
1617 sc
->ps_idle
= !!(conf
->flags
& IEEE80211_CONF_IDLE
);
1619 ath_radio_enable(sc
, hw
);
1620 ath_dbg(common
, ATH_DBG_CONFIG
,
1621 "not-idle: enabling radio\n");
1623 disable_radio
= true;
1628 * We just prepare to enable PS. We have to wait until our AP has
1629 * ACK'd our null data frame to disable RX otherwise we'll ignore
1630 * those ACKs and end up retransmitting the same null data frames.
1631 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1633 if (changed
& IEEE80211_CONF_CHANGE_PS
) {
1634 unsigned long flags
;
1635 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
1636 if (conf
->flags
& IEEE80211_CONF_PS
)
1637 ath9k_enable_ps(sc
);
1639 ath9k_disable_ps(sc
);
1640 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
1643 if (changed
& IEEE80211_CONF_CHANGE_MONITOR
) {
1644 if (conf
->flags
& IEEE80211_CONF_MONITOR
) {
1645 ath_dbg(common
, ATH_DBG_CONFIG
,
1646 "Monitor mode is enabled\n");
1647 sc
->sc_ah
->is_monitoring
= true;
1649 ath_dbg(common
, ATH_DBG_CONFIG
,
1650 "Monitor mode is disabled\n");
1651 sc
->sc_ah
->is_monitoring
= false;
1655 if (changed
& IEEE80211_CONF_CHANGE_CHANNEL
) {
1656 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
1657 struct ath9k_channel old_chan
;
1658 int pos
= curchan
->hw_value
;
1660 unsigned long flags
;
1663 old_pos
= ah
->curchan
- &ah
->channels
[0];
1665 if (hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
)
1666 sc
->sc_flags
|= SC_OP_OFFCHANNEL
;
1668 sc
->sc_flags
&= ~SC_OP_OFFCHANNEL
;
1670 ath_dbg(common
, ATH_DBG_CONFIG
,
1671 "Set channel: %d MHz type: %d\n",
1672 curchan
->center_freq
, conf
->channel_type
);
1674 /* update survey stats for the old channel before switching */
1675 spin_lock_irqsave(&common
->cc_lock
, flags
);
1676 ath_update_survey_stats(sc
);
1677 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1680 * Preserve the current channel values, before updating
1683 if (old_pos
== pos
) {
1684 memcpy(&old_chan
, &sc
->sc_ah
->channels
[pos
],
1685 sizeof(struct ath9k_channel
));
1686 ah
->curchan
= &old_chan
;
1689 ath9k_cmn_update_ichannel(&sc
->sc_ah
->channels
[pos
],
1690 curchan
, conf
->channel_type
);
1693 * If the operating channel changes, change the survey in-use flags
1695 * Reset the survey data for the new channel, unless we're switching
1696 * back to the operating channel from an off-channel operation.
1698 if (!(hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
) &&
1699 sc
->cur_survey
!= &sc
->survey
[pos
]) {
1702 sc
->cur_survey
->filled
&= ~SURVEY_INFO_IN_USE
;
1704 sc
->cur_survey
= &sc
->survey
[pos
];
1706 memset(sc
->cur_survey
, 0, sizeof(struct survey_info
));
1707 sc
->cur_survey
->filled
|= SURVEY_INFO_IN_USE
;
1708 } else if (!(sc
->survey
[pos
].filled
& SURVEY_INFO_IN_USE
)) {
1709 memset(&sc
->survey
[pos
], 0, sizeof(struct survey_info
));
1712 if (ath_set_channel(sc
, hw
, &sc
->sc_ah
->channels
[pos
]) < 0) {
1713 ath_err(common
, "Unable to set channel\n");
1714 mutex_unlock(&sc
->mutex
);
1719 * The most recent snapshot of channel->noisefloor for the old
1720 * channel is only available after the hardware reset. Copy it to
1721 * the survey stats now.
1724 ath_update_survey_nf(sc
, old_pos
);
1727 if (changed
& IEEE80211_CONF_CHANGE_POWER
) {
1728 ath_dbg(common
, ATH_DBG_CONFIG
,
1729 "Set power: %d\n", conf
->power_level
);
1730 sc
->config
.txpowlimit
= 2 * conf
->power_level
;
1731 ath9k_ps_wakeup(sc
);
1732 ath9k_cmn_update_txpow(ah
, sc
->curtxpow
,
1733 sc
->config
.txpowlimit
, &sc
->curtxpow
);
1734 ath9k_ps_restore(sc
);
1737 if (disable_radio
) {
1738 ath_dbg(common
, ATH_DBG_CONFIG
, "idle: disabling radio\n");
1739 ath_radio_disable(sc
, hw
);
1742 mutex_unlock(&sc
->mutex
);
1747 #define SUPPORTED_FILTERS \
1748 (FIF_PROMISC_IN_BSS | \
1753 FIF_BCN_PRBRESP_PROMISC | \
1757 /* FIXME: sc->sc_full_reset ? */
1758 static void ath9k_configure_filter(struct ieee80211_hw
*hw
,
1759 unsigned int changed_flags
,
1760 unsigned int *total_flags
,
1763 struct ath_softc
*sc
= hw
->priv
;
1766 changed_flags
&= SUPPORTED_FILTERS
;
1767 *total_flags
&= SUPPORTED_FILTERS
;
1769 sc
->rx
.rxfilter
= *total_flags
;
1770 ath9k_ps_wakeup(sc
);
1771 rfilt
= ath_calcrxfilter(sc
);
1772 ath9k_hw_setrxfilter(sc
->sc_ah
, rfilt
);
1773 ath9k_ps_restore(sc
);
1775 ath_dbg(ath9k_hw_common(sc
->sc_ah
), ATH_DBG_CONFIG
,
1776 "Set HW RX filter: 0x%x\n", rfilt
);
1779 static int ath9k_sta_add(struct ieee80211_hw
*hw
,
1780 struct ieee80211_vif
*vif
,
1781 struct ieee80211_sta
*sta
)
1783 struct ath_softc
*sc
= hw
->priv
;
1784 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1785 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1786 struct ieee80211_key_conf ps_key
= { };
1788 ath_node_attach(sc
, sta
);
1790 if (vif
->type
!= NL80211_IFTYPE_AP
&&
1791 vif
->type
!= NL80211_IFTYPE_AP_VLAN
)
1794 an
->ps_key
= ath_key_config(common
, vif
, sta
, &ps_key
);
1799 static void ath9k_del_ps_key(struct ath_softc
*sc
,
1800 struct ieee80211_vif
*vif
,
1801 struct ieee80211_sta
*sta
)
1803 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1804 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1805 struct ieee80211_key_conf ps_key
= { .hw_key_idx
= an
->ps_key
};
1810 ath_key_delete(common
, &ps_key
);
1813 static int ath9k_sta_remove(struct ieee80211_hw
*hw
,
1814 struct ieee80211_vif
*vif
,
1815 struct ieee80211_sta
*sta
)
1817 struct ath_softc
*sc
= hw
->priv
;
1819 ath9k_del_ps_key(sc
, vif
, sta
);
1820 ath_node_detach(sc
, sta
);
1825 static void ath9k_sta_notify(struct ieee80211_hw
*hw
,
1826 struct ieee80211_vif
*vif
,
1827 enum sta_notify_cmd cmd
,
1828 struct ieee80211_sta
*sta
)
1830 struct ath_softc
*sc
= hw
->priv
;
1831 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1834 case STA_NOTIFY_SLEEP
:
1835 an
->sleeping
= true;
1836 if (ath_tx_aggr_sleep(sc
, an
))
1837 ieee80211_sta_set_tim(sta
);
1839 case STA_NOTIFY_AWAKE
:
1840 an
->sleeping
= false;
1841 ath_tx_aggr_wakeup(sc
, an
);
1846 static int ath9k_conf_tx(struct ieee80211_hw
*hw
, u16 queue
,
1847 const struct ieee80211_tx_queue_params
*params
)
1849 struct ath_softc
*sc
= hw
->priv
;
1850 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1851 struct ath_txq
*txq
;
1852 struct ath9k_tx_queue_info qi
;
1855 if (queue
>= WME_NUM_AC
)
1858 txq
= sc
->tx
.txq_map
[queue
];
1860 ath9k_ps_wakeup(sc
);
1861 mutex_lock(&sc
->mutex
);
1863 memset(&qi
, 0, sizeof(struct ath9k_tx_queue_info
));
1865 qi
.tqi_aifs
= params
->aifs
;
1866 qi
.tqi_cwmin
= params
->cw_min
;
1867 qi
.tqi_cwmax
= params
->cw_max
;
1868 qi
.tqi_burstTime
= params
->txop
;
1870 ath_dbg(common
, ATH_DBG_CONFIG
,
1871 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1872 queue
, txq
->axq_qnum
, params
->aifs
, params
->cw_min
,
1873 params
->cw_max
, params
->txop
);
1875 ret
= ath_txq_update(sc
, txq
->axq_qnum
, &qi
);
1877 ath_err(common
, "TXQ Update failed\n");
1879 if (sc
->sc_ah
->opmode
== NL80211_IFTYPE_ADHOC
)
1880 if (queue
== WME_AC_BE
&& !ret
)
1881 ath_beaconq_config(sc
);
1883 mutex_unlock(&sc
->mutex
);
1884 ath9k_ps_restore(sc
);
1889 static int ath9k_set_key(struct ieee80211_hw
*hw
,
1890 enum set_key_cmd cmd
,
1891 struct ieee80211_vif
*vif
,
1892 struct ieee80211_sta
*sta
,
1893 struct ieee80211_key_conf
*key
)
1895 struct ath_softc
*sc
= hw
->priv
;
1896 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1899 if (ath9k_modparam_nohwcrypt
)
1902 if (vif
->type
== NL80211_IFTYPE_ADHOC
&&
1903 (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
||
1904 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
) &&
1905 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
1907 * For now, disable hw crypto for the RSN IBSS group keys. This
1908 * could be optimized in the future to use a modified key cache
1909 * design to support per-STA RX GTK, but until that gets
1910 * implemented, use of software crypto for group addressed
1911 * frames is a acceptable to allow RSN IBSS to be used.
1916 mutex_lock(&sc
->mutex
);
1917 ath9k_ps_wakeup(sc
);
1918 ath_dbg(common
, ATH_DBG_CONFIG
, "Set HW Key\n");
1923 ath9k_del_ps_key(sc
, vif
, sta
);
1925 ret
= ath_key_config(common
, vif
, sta
, key
);
1927 key
->hw_key_idx
= ret
;
1928 /* push IV and Michael MIC generation to stack */
1929 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
1930 if (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
)
1931 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
1932 if (sc
->sc_ah
->sw_mgmt_crypto
&&
1933 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
)
1934 key
->flags
|= IEEE80211_KEY_FLAG_SW_MGMT
;
1939 ath_key_delete(common
, key
);
1945 ath9k_ps_restore(sc
);
1946 mutex_unlock(&sc
->mutex
);
1950 static void ath9k_bss_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
1952 struct ath_softc
*sc
= data
;
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
;
1958 * Skip iteration if primary station vif's bss info
1961 if (sc
->sc_flags
& SC_OP_PRIM_STA_VIF
)
1964 if (bss_conf
->assoc
) {
1965 sc
->sc_flags
|= SC_OP_PRIM_STA_VIF
;
1966 avp
->primary_sta_vif
= true;
1967 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
1968 common
->curaid
= bss_conf
->aid
;
1969 ath9k_hw_write_associd(sc
->sc_ah
);
1970 ath_dbg(common
, ATH_DBG_CONFIG
,
1971 "Bss Info ASSOC %d, bssid: %pM\n",
1972 bss_conf
->aid
, common
->curbssid
);
1973 ath_beacon_config(sc
, vif
);
1975 * Request a re-configuration of Beacon related timers
1976 * on the receipt of the first Beacon frame (i.e.,
1977 * after time sync with the AP).
1979 sc
->ps_flags
|= PS_BEACON_SYNC
| PS_WAIT_FOR_BEACON
;
1980 /* Reset rssi stats */
1981 sc
->last_rssi
= ATH_RSSI_DUMMY_MARKER
;
1982 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
1984 if (!common
->disable_ani
) {
1985 sc
->sc_flags
|= SC_OP_ANI_RUN
;
1986 ath_start_ani(common
);
1992 static void ath9k_config_bss(struct ath_softc
*sc
, struct ieee80211_vif
*vif
)
1994 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1995 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1996 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1998 if (sc
->sc_ah
->opmode
!= NL80211_IFTYPE_STATION
)
2001 /* Reconfigure bss info */
2002 if (avp
->primary_sta_vif
&& !bss_conf
->assoc
) {
2003 ath_dbg(common
, ATH_DBG_CONFIG
,
2004 "Bss Info DISASSOC %d, bssid %pM\n",
2005 common
->curaid
, common
->curbssid
);
2006 sc
->sc_flags
&= ~(SC_OP_PRIM_STA_VIF
| SC_OP_BEACONS
);
2007 avp
->primary_sta_vif
= false;
2008 memset(common
->curbssid
, 0, ETH_ALEN
);
2012 ieee80211_iterate_active_interfaces_atomic(
2013 sc
->hw
, ath9k_bss_iter
, sc
);
2016 * None of station vifs are associated.
2019 if (!(sc
->sc_flags
& SC_OP_PRIM_STA_VIF
)) {
2020 ath9k_hw_write_associd(sc
->sc_ah
);
2022 sc
->sc_flags
&= ~SC_OP_ANI_RUN
;
2023 del_timer_sync(&common
->ani
.timer
);
2024 memset(&sc
->caldata
, 0, sizeof(sc
->caldata
));
2028 static void ath9k_bss_info_changed(struct ieee80211_hw
*hw
,
2029 struct ieee80211_vif
*vif
,
2030 struct ieee80211_bss_conf
*bss_conf
,
2033 struct ath_softc
*sc
= hw
->priv
;
2034 struct ath_hw
*ah
= sc
->sc_ah
;
2035 struct ath_common
*common
= ath9k_hw_common(ah
);
2036 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
2040 ath9k_ps_wakeup(sc
);
2041 mutex_lock(&sc
->mutex
);
2043 if (changed
& BSS_CHANGED_BSSID
) {
2044 ath9k_config_bss(sc
, vif
);
2046 ath_dbg(common
, ATH_DBG_CONFIG
, "BSSID: %pM aid: 0x%x\n",
2047 common
->curbssid
, common
->curaid
);
2050 if (changed
& BSS_CHANGED_IBSS
) {
2051 /* There can be only one vif available */
2052 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
2053 common
->curaid
= bss_conf
->aid
;
2054 ath9k_hw_write_associd(sc
->sc_ah
);
2056 if (bss_conf
->ibss_joined
) {
2057 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
2059 if (!common
->disable_ani
) {
2060 sc
->sc_flags
|= SC_OP_ANI_RUN
;
2061 ath_start_ani(common
);
2065 sc
->sc_flags
&= ~SC_OP_ANI_RUN
;
2066 del_timer_sync(&common
->ani
.timer
);
2070 /* Enable transmission of beacons (AP, IBSS, MESH) */
2071 if ((changed
& BSS_CHANGED_BEACON
) ||
2072 ((changed
& BSS_CHANGED_BEACON_ENABLED
) && bss_conf
->enable_beacon
)) {
2073 ath9k_set_beaconing_status(sc
, false);
2074 error
= ath_beacon_alloc(sc
, vif
);
2076 ath_beacon_config(sc
, vif
);
2077 ath9k_set_beaconing_status(sc
, true);
2080 if (changed
& BSS_CHANGED_ERP_SLOT
) {
2081 if (bss_conf
->use_short_slot
)
2085 if (vif
->type
== NL80211_IFTYPE_AP
) {
2087 * Defer update, so that connected stations can adjust
2088 * their settings at the same time.
2089 * See beacon.c for more details
2091 sc
->beacon
.slottime
= slottime
;
2092 sc
->beacon
.updateslot
= UPDATE
;
2094 ah
->slottime
= slottime
;
2095 ath9k_hw_init_global_settings(ah
);
2099 /* Disable transmission of beacons */
2100 if ((changed
& BSS_CHANGED_BEACON_ENABLED
) &&
2101 !bss_conf
->enable_beacon
) {
2102 ath9k_set_beaconing_status(sc
, false);
2103 avp
->is_bslot_active
= false;
2104 ath9k_set_beaconing_status(sc
, true);
2107 if (changed
& BSS_CHANGED_BEACON_INT
) {
2109 * In case of AP mode, the HW TSF has to be reset
2110 * when the beacon interval changes.
2112 if (vif
->type
== NL80211_IFTYPE_AP
) {
2113 sc
->sc_flags
|= SC_OP_TSF_RESET
;
2114 ath9k_set_beaconing_status(sc
, false);
2115 error
= ath_beacon_alloc(sc
, vif
);
2117 ath_beacon_config(sc
, vif
);
2118 ath9k_set_beaconing_status(sc
, true);
2120 ath_beacon_config(sc
, vif
);
2123 if (changed
& BSS_CHANGED_ERP_PREAMBLE
) {
2124 ath_dbg(common
, ATH_DBG_CONFIG
, "BSS Changed PREAMBLE %d\n",
2125 bss_conf
->use_short_preamble
);
2126 if (bss_conf
->use_short_preamble
)
2127 sc
->sc_flags
|= SC_OP_PREAMBLE_SHORT
;
2129 sc
->sc_flags
&= ~SC_OP_PREAMBLE_SHORT
;
2132 if (changed
& BSS_CHANGED_ERP_CTS_PROT
) {
2133 ath_dbg(common
, ATH_DBG_CONFIG
, "BSS Changed CTS PROT %d\n",
2134 bss_conf
->use_cts_prot
);
2135 if (bss_conf
->use_cts_prot
&&
2136 hw
->conf
.channel
->band
!= IEEE80211_BAND_5GHZ
)
2137 sc
->sc_flags
|= SC_OP_PROTECT_ENABLE
;
2139 sc
->sc_flags
&= ~SC_OP_PROTECT_ENABLE
;
2142 mutex_unlock(&sc
->mutex
);
2143 ath9k_ps_restore(sc
);
2146 static u64
ath9k_get_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
2148 struct ath_softc
*sc
= hw
->priv
;
2151 mutex_lock(&sc
->mutex
);
2152 ath9k_ps_wakeup(sc
);
2153 tsf
= ath9k_hw_gettsf64(sc
->sc_ah
);
2154 ath9k_ps_restore(sc
);
2155 mutex_unlock(&sc
->mutex
);
2160 static void ath9k_set_tsf(struct ieee80211_hw
*hw
,
2161 struct ieee80211_vif
*vif
,
2164 struct ath_softc
*sc
= hw
->priv
;
2166 mutex_lock(&sc
->mutex
);
2167 ath9k_ps_wakeup(sc
);
2168 ath9k_hw_settsf64(sc
->sc_ah
, tsf
);
2169 ath9k_ps_restore(sc
);
2170 mutex_unlock(&sc
->mutex
);
2173 static void ath9k_reset_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
2175 struct ath_softc
*sc
= hw
->priv
;
2177 mutex_lock(&sc
->mutex
);
2179 ath9k_ps_wakeup(sc
);
2180 ath9k_hw_reset_tsf(sc
->sc_ah
);
2181 ath9k_ps_restore(sc
);
2183 mutex_unlock(&sc
->mutex
);
2186 static int ath9k_ampdu_action(struct ieee80211_hw
*hw
,
2187 struct ieee80211_vif
*vif
,
2188 enum ieee80211_ampdu_mlme_action action
,
2189 struct ieee80211_sta
*sta
,
2190 u16 tid
, u16
*ssn
, u8 buf_size
)
2192 struct ath_softc
*sc
= hw
->priv
;
2198 case IEEE80211_AMPDU_RX_START
:
2199 if (!(sc
->sc_flags
& SC_OP_RXAGGR
))
2202 case IEEE80211_AMPDU_RX_STOP
:
2204 case IEEE80211_AMPDU_TX_START
:
2205 if (!(sc
->sc_flags
& SC_OP_TXAGGR
))
2208 ath9k_ps_wakeup(sc
);
2209 ret
= ath_tx_aggr_start(sc
, sta
, tid
, ssn
);
2211 ieee80211_start_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
2212 ath9k_ps_restore(sc
);
2214 case IEEE80211_AMPDU_TX_STOP
:
2215 ath9k_ps_wakeup(sc
);
2216 ath_tx_aggr_stop(sc
, sta
, tid
);
2217 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
2218 ath9k_ps_restore(sc
);
2220 case IEEE80211_AMPDU_TX_OPERATIONAL
:
2221 ath9k_ps_wakeup(sc
);
2222 ath_tx_aggr_resume(sc
, sta
, tid
);
2223 ath9k_ps_restore(sc
);
2226 ath_err(ath9k_hw_common(sc
->sc_ah
), "Unknown AMPDU action\n");
2234 static int ath9k_get_survey(struct ieee80211_hw
*hw
, int idx
,
2235 struct survey_info
*survey
)
2237 struct ath_softc
*sc
= hw
->priv
;
2238 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2239 struct ieee80211_supported_band
*sband
;
2240 struct ieee80211_channel
*chan
;
2241 unsigned long flags
;
2244 spin_lock_irqsave(&common
->cc_lock
, flags
);
2246 ath_update_survey_stats(sc
);
2248 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
];
2249 if (sband
&& idx
>= sband
->n_channels
) {
2250 idx
-= sband
->n_channels
;
2255 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
];
2257 if (!sband
|| idx
>= sband
->n_channels
) {
2258 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
2262 chan
= &sband
->channels
[idx
];
2263 pos
= chan
->hw_value
;
2264 memcpy(survey
, &sc
->survey
[pos
], sizeof(*survey
));
2265 survey
->channel
= chan
;
2266 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
2271 static void ath9k_set_coverage_class(struct ieee80211_hw
*hw
, u8 coverage_class
)
2273 struct ath_softc
*sc
= hw
->priv
;
2274 struct ath_hw
*ah
= sc
->sc_ah
;
2276 mutex_lock(&sc
->mutex
);
2277 ah
->coverage_class
= coverage_class
;
2279 ath9k_ps_wakeup(sc
);
2280 ath9k_hw_init_global_settings(ah
);
2281 ath9k_ps_restore(sc
);
2283 mutex_unlock(&sc
->mutex
);
2286 static void ath9k_flush(struct ieee80211_hw
*hw
, bool drop
)
2288 struct ath_softc
*sc
= hw
->priv
;
2289 struct ath_hw
*ah
= sc
->sc_ah
;
2290 struct ath_common
*common
= ath9k_hw_common(ah
);
2291 int timeout
= 200; /* ms */
2295 mutex_lock(&sc
->mutex
);
2296 cancel_delayed_work_sync(&sc
->tx_complete_work
);
2298 if (ah
->ah_flags
& AH_UNPLUGGED
) {
2299 ath_dbg(common
, ATH_DBG_ANY
, "Device has been unplugged!\n");
2300 mutex_unlock(&sc
->mutex
);
2304 if (sc
->sc_flags
& SC_OP_INVALID
) {
2305 ath_dbg(common
, ATH_DBG_ANY
, "Device not present\n");
2306 mutex_unlock(&sc
->mutex
);
2313 for (j
= 0; j
< timeout
; j
++) {
2317 usleep_range(1000, 2000);
2319 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
2320 if (!ATH_TXQ_SETUP(sc
, i
))
2323 npend
= ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]);
2333 ath9k_ps_wakeup(sc
);
2334 spin_lock_bh(&sc
->sc_pcu_lock
);
2335 drain_txq
= ath_drain_all_txq(sc
, false);
2336 spin_unlock_bh(&sc
->sc_pcu_lock
);
2339 ath_reset(sc
, false);
2341 ath9k_ps_restore(sc
);
2342 ieee80211_wake_queues(hw
);
2345 ieee80211_queue_delayed_work(hw
, &sc
->tx_complete_work
, 0);
2346 mutex_unlock(&sc
->mutex
);
2349 static bool ath9k_tx_frames_pending(struct ieee80211_hw
*hw
)
2351 struct ath_softc
*sc
= hw
->priv
;
2354 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
2355 if (!ATH_TXQ_SETUP(sc
, i
))
2358 if (ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]))
2364 static int ath9k_tx_last_beacon(struct ieee80211_hw
*hw
)
2366 struct ath_softc
*sc
= hw
->priv
;
2367 struct ath_hw
*ah
= sc
->sc_ah
;
2368 struct ieee80211_vif
*vif
;
2369 struct ath_vif
*avp
;
2371 struct ath_tx_status ts
;
2374 vif
= sc
->beacon
.bslot
[0];
2378 avp
= (void *)vif
->drv_priv
;
2379 if (!avp
->is_bslot_active
)
2382 if (!sc
->beacon
.tx_processed
) {
2383 tasklet_disable(&sc
->bcon_tasklet
);
2386 if (!bf
|| !bf
->bf_mpdu
)
2389 status
= ath9k_hw_txprocdesc(ah
, bf
->bf_desc
, &ts
);
2390 if (status
== -EINPROGRESS
)
2393 sc
->beacon
.tx_processed
= true;
2394 sc
->beacon
.tx_last
= !(ts
.ts_status
& ATH9K_TXERR_MASK
);
2397 tasklet_enable(&sc
->bcon_tasklet
);
2400 return sc
->beacon
.tx_last
;
2403 static int ath9k_get_stats(struct ieee80211_hw
*hw
,
2404 struct ieee80211_low_level_stats
*stats
)
2406 struct ath_softc
*sc
= hw
->priv
;
2407 struct ath_hw
*ah
= sc
->sc_ah
;
2408 struct ath9k_mib_stats
*mib_stats
= &ah
->ah_mibStats
;
2410 stats
->dot11ACKFailureCount
= mib_stats
->ackrcv_bad
;
2411 stats
->dot11RTSFailureCount
= mib_stats
->rts_bad
;
2412 stats
->dot11FCSErrorCount
= mib_stats
->fcs_bad
;
2413 stats
->dot11RTSSuccessCount
= mib_stats
->rts_good
;
2417 static u32
fill_chainmask(u32 cap
, u32
new)
2422 for (i
= 0; cap
&& new; i
++, cap
>>= 1) {
2423 if (!(cap
& BIT(0)))
2435 static int ath9k_set_antenna(struct ieee80211_hw
*hw
, u32 tx_ant
, u32 rx_ant
)
2437 struct ath_softc
*sc
= hw
->priv
;
2438 struct ath_hw
*ah
= sc
->sc_ah
;
2440 if (!rx_ant
|| !tx_ant
)
2443 sc
->ant_rx
= rx_ant
;
2444 sc
->ant_tx
= tx_ant
;
2446 if (ah
->caps
.rx_chainmask
== 1)
2449 /* AR9100 runs into calibration issues if not all rx chains are enabled */
2450 if (AR_SREV_9100(ah
))
2451 ah
->rxchainmask
= 0x7;
2453 ah
->rxchainmask
= fill_chainmask(ah
->caps
.rx_chainmask
, rx_ant
);
2455 ah
->txchainmask
= fill_chainmask(ah
->caps
.tx_chainmask
, tx_ant
);
2456 ath9k_reload_chainmask_settings(sc
);
2461 static int ath9k_get_antenna(struct ieee80211_hw
*hw
, u32
*tx_ant
, u32
*rx_ant
)
2463 struct ath_softc
*sc
= hw
->priv
;
2465 *tx_ant
= sc
->ant_tx
;
2466 *rx_ant
= sc
->ant_rx
;
2470 struct ieee80211_ops ath9k_ops
= {
2472 .start
= ath9k_start
,
2474 .add_interface
= ath9k_add_interface
,
2475 .change_interface
= ath9k_change_interface
,
2476 .remove_interface
= ath9k_remove_interface
,
2477 .config
= ath9k_config
,
2478 .configure_filter
= ath9k_configure_filter
,
2479 .sta_add
= ath9k_sta_add
,
2480 .sta_remove
= ath9k_sta_remove
,
2481 .sta_notify
= ath9k_sta_notify
,
2482 .conf_tx
= ath9k_conf_tx
,
2483 .bss_info_changed
= ath9k_bss_info_changed
,
2484 .set_key
= ath9k_set_key
,
2485 .get_tsf
= ath9k_get_tsf
,
2486 .set_tsf
= ath9k_set_tsf
,
2487 .reset_tsf
= ath9k_reset_tsf
,
2488 .ampdu_action
= ath9k_ampdu_action
,
2489 .get_survey
= ath9k_get_survey
,
2490 .rfkill_poll
= ath9k_rfkill_poll_state
,
2491 .set_coverage_class
= ath9k_set_coverage_class
,
2492 .flush
= ath9k_flush
,
2493 .tx_frames_pending
= ath9k_tx_frames_pending
,
2494 .tx_last_beacon
= ath9k_tx_last_beacon
,
2495 .get_stats
= ath9k_get_stats
,
2496 .set_antenna
= ath9k_set_antenna
,
2497 .get_antenna
= ath9k_get_antenna
,