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)
121 if (sc
->ps_idle
&& (sc
->ps_flags
& PS_WAIT_FOR_TX_ACK
))
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
);
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 ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_ANT_DIV_COMB
) && 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 (!ath_prepare_reset(sc
, retry_tx
, flush
))
338 ath_dbg(common
, CONFIG
, "Reset to %u MHz, HT40: %d fastcc: %d\n",
339 hchan
->channel
, IS_CHAN_HT40(hchan
), fastcc
);
341 r
= ath9k_hw_reset(ah
, hchan
, caldata
, fastcc
);
344 "Unable to reset channel, reset status %d\n", r
);
348 if (!ath_complete_reset(sc
, true))
352 spin_unlock_bh(&sc
->sc_pcu_lock
);
358 * Set/change channels. If the channel is really being changed, it's done
359 * by reseting the chip. To accomplish this we must first cleanup any pending
360 * DMA, then restart stuff.
362 static int ath_set_channel(struct ath_softc
*sc
, struct ieee80211_hw
*hw
,
363 struct ath9k_channel
*hchan
)
367 if (sc
->sc_flags
& SC_OP_INVALID
)
370 r
= ath_reset_internal(sc
, hchan
, false);
375 static void ath_paprd_activate(struct ath_softc
*sc
)
377 struct ath_hw
*ah
= sc
->sc_ah
;
378 struct ath9k_hw_cal_data
*caldata
= ah
->caldata
;
381 if (!caldata
|| !caldata
->paprd_done
)
385 ar9003_paprd_enable(ah
, false);
386 for (chain
= 0; chain
< AR9300_MAX_CHAINS
; chain
++) {
387 if (!(ah
->txchainmask
& BIT(chain
)))
390 ar9003_paprd_populate_single_table(ah
, caldata
, chain
);
393 ar9003_paprd_enable(ah
, true);
394 ath9k_ps_restore(sc
);
397 static bool ath_paprd_send_frame(struct ath_softc
*sc
, struct sk_buff
*skb
, int chain
)
399 struct ieee80211_hw
*hw
= sc
->hw
;
400 struct ieee80211_tx_info
*tx_info
= IEEE80211_SKB_CB(skb
);
401 struct ath_hw
*ah
= sc
->sc_ah
;
402 struct ath_common
*common
= ath9k_hw_common(ah
);
403 struct ath_tx_control txctl
;
406 memset(&txctl
, 0, sizeof(txctl
));
407 txctl
.txq
= sc
->tx
.txq_map
[WME_AC_BE
];
409 memset(tx_info
, 0, sizeof(*tx_info
));
410 tx_info
->band
= hw
->conf
.channel
->band
;
411 tx_info
->flags
|= IEEE80211_TX_CTL_NO_ACK
;
412 tx_info
->control
.rates
[0].idx
= 0;
413 tx_info
->control
.rates
[0].count
= 1;
414 tx_info
->control
.rates
[0].flags
= IEEE80211_TX_RC_MCS
;
415 tx_info
->control
.rates
[1].idx
= -1;
417 init_completion(&sc
->paprd_complete
);
418 txctl
.paprd
= BIT(chain
);
420 if (ath_tx_start(hw
, skb
, &txctl
) != 0) {
421 ath_dbg(common
, CALIBRATE
, "PAPRD TX failed\n");
422 dev_kfree_skb_any(skb
);
426 time_left
= wait_for_completion_timeout(&sc
->paprd_complete
,
427 msecs_to_jiffies(ATH_PAPRD_TIMEOUT
));
430 ath_dbg(common
, CALIBRATE
,
431 "Timeout waiting for paprd training on TX chain %d\n",
437 void ath_paprd_calibrate(struct work_struct
*work
)
439 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, paprd_work
);
440 struct ieee80211_hw
*hw
= sc
->hw
;
441 struct ath_hw
*ah
= sc
->sc_ah
;
442 struct ieee80211_hdr
*hdr
;
443 struct sk_buff
*skb
= NULL
;
444 struct ath9k_hw_cal_data
*caldata
= ah
->caldata
;
445 struct ath_common
*common
= ath9k_hw_common(ah
);
456 if (ar9003_paprd_init_table(ah
) < 0)
459 skb
= alloc_skb(len
, GFP_KERNEL
);
464 memset(skb
->data
, 0, len
);
465 hdr
= (struct ieee80211_hdr
*)skb
->data
;
466 ftype
= IEEE80211_FTYPE_DATA
| IEEE80211_STYPE_NULLFUNC
;
467 hdr
->frame_control
= cpu_to_le16(ftype
);
468 hdr
->duration_id
= cpu_to_le16(10);
469 memcpy(hdr
->addr1
, hw
->wiphy
->perm_addr
, ETH_ALEN
);
470 memcpy(hdr
->addr2
, hw
->wiphy
->perm_addr
, ETH_ALEN
);
471 memcpy(hdr
->addr3
, hw
->wiphy
->perm_addr
, ETH_ALEN
);
473 for (chain
= 0; chain
< AR9300_MAX_CHAINS
; chain
++) {
474 if (!(ah
->txchainmask
& BIT(chain
)))
479 ath_dbg(common
, CALIBRATE
,
480 "Sending PAPRD frame for thermal measurement on chain %d\n",
482 if (!ath_paprd_send_frame(sc
, skb
, chain
))
485 ar9003_paprd_setup_gain_table(ah
, chain
);
487 ath_dbg(common
, CALIBRATE
,
488 "Sending PAPRD training frame on chain %d\n", chain
);
489 if (!ath_paprd_send_frame(sc
, skb
, chain
))
492 if (!ar9003_paprd_is_done(ah
)) {
493 ath_dbg(common
, CALIBRATE
,
494 "PAPRD not yet done on chain %d\n", chain
);
498 if (ar9003_paprd_create_curve(ah
, caldata
, chain
)) {
499 ath_dbg(common
, CALIBRATE
,
500 "PAPRD create curve failed on chain %d\n",
510 caldata
->paprd_done
= true;
511 ath_paprd_activate(sc
);
515 ath9k_ps_restore(sc
);
519 * This routine performs the periodic noise floor calibration function
520 * that is used to adjust and optimize the chip performance. This
521 * takes environmental changes (location, temperature) into account.
522 * When the task is complete, it reschedules itself depending on the
523 * appropriate interval that was calculated.
525 void ath_ani_calibrate(unsigned long data
)
527 struct ath_softc
*sc
= (struct ath_softc
*)data
;
528 struct ath_hw
*ah
= sc
->sc_ah
;
529 struct ath_common
*common
= ath9k_hw_common(ah
);
530 bool longcal
= false;
531 bool shortcal
= false;
532 bool aniflag
= false;
533 unsigned int timestamp
= jiffies_to_msecs(jiffies
);
534 u32 cal_interval
, short_cal_interval
, long_cal_interval
;
537 if (ah
->caldata
&& ah
->caldata
->nfcal_interference
)
538 long_cal_interval
= ATH_LONG_CALINTERVAL_INT
;
540 long_cal_interval
= ATH_LONG_CALINTERVAL
;
542 short_cal_interval
= (ah
->opmode
== NL80211_IFTYPE_AP
) ?
543 ATH_AP_SHORT_CALINTERVAL
: ATH_STA_SHORT_CALINTERVAL
;
545 /* Only calibrate if awake */
546 if (sc
->sc_ah
->power_mode
!= ATH9K_PM_AWAKE
)
551 /* Long calibration runs independently of short calibration. */
552 if ((timestamp
- common
->ani
.longcal_timer
) >= long_cal_interval
) {
554 common
->ani
.longcal_timer
= timestamp
;
557 /* Short calibration applies only while caldone is false */
558 if (!common
->ani
.caldone
) {
559 if ((timestamp
- common
->ani
.shortcal_timer
) >= short_cal_interval
) {
561 common
->ani
.shortcal_timer
= timestamp
;
562 common
->ani
.resetcal_timer
= timestamp
;
565 if ((timestamp
- common
->ani
.resetcal_timer
) >=
566 ATH_RESTART_CALINTERVAL
) {
567 common
->ani
.caldone
= ath9k_hw_reset_calvalid(ah
);
568 if (common
->ani
.caldone
)
569 common
->ani
.resetcal_timer
= timestamp
;
573 /* Verify whether we must check ANI */
574 if (sc
->sc_ah
->config
.enable_ani
575 && (timestamp
- common
->ani
.checkani_timer
) >=
576 ah
->config
.ani_poll_interval
) {
578 common
->ani
.checkani_timer
= timestamp
;
581 /* Call ANI routine if necessary */
583 spin_lock_irqsave(&common
->cc_lock
, flags
);
584 ath9k_hw_ani_monitor(ah
, ah
->curchan
);
585 ath_update_survey_stats(sc
);
586 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
589 /* Perform calibration if necessary */
590 if (longcal
|| shortcal
) {
591 common
->ani
.caldone
=
592 ath9k_hw_calibrate(ah
, ah
->curchan
,
593 ah
->rxchainmask
, longcal
);
597 "Calibration @%lu finished: %s %s %s, caldone: %s\n",
599 longcal
? "long" : "", shortcal
? "short" : "",
600 aniflag
? "ani" : "", common
->ani
.caldone
? "true" : "false");
602 ath9k_ps_restore(sc
);
606 * Set timer interval based on previous results.
607 * The interval must be the shortest necessary to satisfy ANI,
608 * short calibration and long calibration.
610 ath9k_debug_samp_bb_mac(sc
);
611 cal_interval
= ATH_LONG_CALINTERVAL
;
612 if (sc
->sc_ah
->config
.enable_ani
)
613 cal_interval
= min(cal_interval
,
614 (u32
)ah
->config
.ani_poll_interval
);
615 if (!common
->ani
.caldone
)
616 cal_interval
= min(cal_interval
, (u32
)short_cal_interval
);
618 mod_timer(&common
->ani
.timer
, jiffies
+ msecs_to_jiffies(cal_interval
));
619 if ((sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_PAPRD
) && ah
->caldata
) {
620 if (!ah
->caldata
->paprd_done
)
621 ieee80211_queue_work(sc
->hw
, &sc
->paprd_work
);
622 else if (!ah
->paprd_table_write_done
)
623 ath_paprd_activate(sc
);
627 static void ath_node_attach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
,
628 struct ieee80211_vif
*vif
)
631 an
= (struct ath_node
*)sta
->drv_priv
;
633 #ifdef CONFIG_ATH9K_DEBUGFS
634 spin_lock(&sc
->nodes_lock
);
635 list_add(&an
->list
, &sc
->nodes
);
636 spin_unlock(&sc
->nodes_lock
);
641 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
) {
642 ath_tx_node_init(sc
, an
);
643 an
->maxampdu
= 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR
+
644 sta
->ht_cap
.ampdu_factor
);
645 an
->mpdudensity
= parse_mpdudensity(sta
->ht_cap
.ampdu_density
);
649 static void ath_node_detach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
)
651 struct ath_node
*an
= (struct ath_node
*)sta
->drv_priv
;
653 #ifdef CONFIG_ATH9K_DEBUGFS
654 spin_lock(&sc
->nodes_lock
);
656 spin_unlock(&sc
->nodes_lock
);
660 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
661 ath_tx_node_cleanup(sc
, an
);
665 void ath9k_tasklet(unsigned long data
)
667 struct ath_softc
*sc
= (struct ath_softc
*)data
;
668 struct ath_hw
*ah
= sc
->sc_ah
;
669 struct ath_common
*common
= ath9k_hw_common(ah
);
671 u32 status
= sc
->intrstatus
;
675 spin_lock(&sc
->sc_pcu_lock
);
677 if ((status
& ATH9K_INT_FATAL
) ||
678 (status
& ATH9K_INT_BB_WATCHDOG
)) {
679 #ifdef CONFIG_ATH9K_DEBUGFS
680 enum ath_reset_type type
;
682 if (status
& ATH9K_INT_FATAL
)
683 type
= RESET_TYPE_FATAL_INT
;
685 type
= RESET_TYPE_BB_WATCHDOG
;
687 RESET_STAT_INC(sc
, type
);
689 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
694 * Only run the baseband hang check if beacons stop working in AP or
695 * IBSS mode, because it has a high false positive rate. For station
696 * mode it should not be necessary, since the upper layers will detect
697 * this through a beacon miss automatically and the following channel
698 * change will trigger a hardware reset anyway
700 if (ath9k_hw_numtxpending(ah
, sc
->beacon
.beaconq
) != 0 &&
701 !ath9k_hw_check_alive(ah
))
702 ieee80211_queue_work(sc
->hw
, &sc
->hw_check_work
);
704 if ((status
& ATH9K_INT_TSFOOR
) && sc
->ps_enabled
) {
706 * TSF sync does not look correct; remain awake to sync with
709 ath_dbg(common
, PS
, "TSFOOR - Sync with next Beacon\n");
710 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
| PS_BEACON_SYNC
;
713 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
714 rxmask
= (ATH9K_INT_RXHP
| ATH9K_INT_RXLP
| ATH9K_INT_RXEOL
|
717 rxmask
= (ATH9K_INT_RX
| ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
719 if (status
& rxmask
) {
720 /* Check for high priority Rx first */
721 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
722 (status
& ATH9K_INT_RXHP
))
723 ath_rx_tasklet(sc
, 0, true);
725 ath_rx_tasklet(sc
, 0, false);
728 if (status
& ATH9K_INT_TX
) {
729 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
730 ath_tx_edma_tasklet(sc
);
735 ath9k_btcoex_handle_interrupt(sc
, status
);
738 /* re-enable hardware interrupt */
739 ath9k_hw_enable_interrupts(ah
);
741 spin_unlock(&sc
->sc_pcu_lock
);
742 ath9k_ps_restore(sc
);
745 irqreturn_t
ath_isr(int irq
, void *dev
)
747 #define SCHED_INTR ( \
749 ATH9K_INT_BB_WATCHDOG | \
759 ATH9K_INT_GENTIMER | \
762 struct ath_softc
*sc
= dev
;
763 struct ath_hw
*ah
= sc
->sc_ah
;
764 struct ath_common
*common
= ath9k_hw_common(ah
);
765 enum ath9k_int status
;
769 * The hardware is not ready/present, don't
770 * touch anything. Note this can happen early
771 * on if the IRQ is shared.
773 if (sc
->sc_flags
& SC_OP_INVALID
)
777 /* shared irq, not for us */
779 if (!ath9k_hw_intrpend(ah
))
783 * Figure out the reason(s) for the interrupt. Note
784 * that the hal returns a pseudo-ISR that may include
785 * bits we haven't explicitly enabled so we mask the
786 * value to insure we only process bits we requested.
788 ath9k_hw_getisr(ah
, &status
); /* NB: clears ISR too */
789 status
&= ah
->imask
; /* discard unasked-for bits */
792 * If there are no status bits set, then this interrupt was not
793 * for me (should have been caught above).
798 /* Cache the status */
799 sc
->intrstatus
= status
;
801 if (status
& SCHED_INTR
)
805 * If a FATAL or RXORN interrupt is received, we have to reset the
808 if ((status
& ATH9K_INT_FATAL
) || ((status
& ATH9K_INT_RXORN
) &&
809 !(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)))
812 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
813 (status
& ATH9K_INT_BB_WATCHDOG
)) {
815 spin_lock(&common
->cc_lock
);
816 ath_hw_cycle_counters_update(common
);
817 ar9003_hw_bb_watchdog_dbg_info(ah
);
818 spin_unlock(&common
->cc_lock
);
823 if (status
& ATH9K_INT_SWBA
)
824 tasklet_schedule(&sc
->bcon_tasklet
);
826 if (status
& ATH9K_INT_TXURN
)
827 ath9k_hw_updatetxtriglevel(ah
, true);
829 if (status
& ATH9K_INT_RXEOL
) {
830 ah
->imask
&= ~(ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
831 ath9k_hw_set_interrupts(ah
);
834 if (status
& ATH9K_INT_MIB
) {
836 * Disable interrupts until we service the MIB
837 * interrupt; otherwise it will continue to
840 ath9k_hw_disable_interrupts(ah
);
842 * Let the hal handle the event. We assume
843 * it will clear whatever condition caused
846 spin_lock(&common
->cc_lock
);
847 ath9k_hw_proc_mib_event(ah
);
848 spin_unlock(&common
->cc_lock
);
849 ath9k_hw_enable_interrupts(ah
);
852 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
853 if (status
& ATH9K_INT_TIM_TIMER
) {
854 if (ATH_DBG_WARN_ON_ONCE(sc
->ps_idle
))
856 /* Clear RxAbort bit so that we can
858 ath9k_setpower(sc
, ATH9K_PM_AWAKE
);
859 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
860 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
;
865 ath_debug_stat_interrupt(sc
, status
);
868 /* turn off every interrupt */
869 ath9k_hw_disable_interrupts(ah
);
870 tasklet_schedule(&sc
->intr_tq
);
878 static int ath_reset(struct ath_softc
*sc
, bool retry_tx
)
884 r
= ath_reset_internal(sc
, NULL
, retry_tx
);
888 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
889 if (ATH_TXQ_SETUP(sc
, i
)) {
890 spin_lock_bh(&sc
->tx
.txq
[i
].axq_lock
);
891 ath_txq_schedule(sc
, &sc
->tx
.txq
[i
]);
892 spin_unlock_bh(&sc
->tx
.txq
[i
].axq_lock
);
897 ath9k_ps_restore(sc
);
902 void ath_reset_work(struct work_struct
*work
)
904 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, hw_reset_work
);
909 void ath_hw_check(struct work_struct
*work
)
911 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, hw_check_work
);
912 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
917 if (ath9k_hw_check_alive(sc
->sc_ah
))
920 spin_lock_irqsave(&common
->cc_lock
, flags
);
921 busy
= ath_update_survey_stats(sc
);
922 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
924 ath_dbg(common
, RESET
, "Possible baseband hang, busy=%d (try %d)\n",
925 busy
, sc
->hw_busy_count
+ 1);
927 if (++sc
->hw_busy_count
>= 3) {
928 RESET_STAT_INC(sc
, RESET_TYPE_BB_HANG
);
929 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
932 } else if (busy
>= 0)
933 sc
->hw_busy_count
= 0;
936 ath9k_ps_restore(sc
);
939 static void ath_hw_pll_rx_hang_check(struct ath_softc
*sc
, u32 pll_sqsum
)
942 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
944 if (pll_sqsum
>= 0x40000) {
947 /* Rx is hung for more than 500ms. Reset it */
948 ath_dbg(common
, RESET
, "Possible RX hang, resetting\n");
949 RESET_STAT_INC(sc
, RESET_TYPE_PLL_HANG
);
950 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
957 void ath_hw_pll_work(struct work_struct
*work
)
959 struct ath_softc
*sc
= container_of(work
, struct ath_softc
,
963 if (AR_SREV_9485(sc
->sc_ah
)) {
966 pll_sqsum
= ar9003_get_pll_sqsum_dvc(sc
->sc_ah
);
967 ath9k_ps_restore(sc
);
969 ath_hw_pll_rx_hang_check(sc
, pll_sqsum
);
971 ieee80211_queue_delayed_work(sc
->hw
, &sc
->hw_pll_work
, HZ
/5);
975 /**********************/
976 /* mac80211 callbacks */
977 /**********************/
979 static int ath9k_start(struct ieee80211_hw
*hw
)
981 struct ath_softc
*sc
= hw
->priv
;
982 struct ath_hw
*ah
= sc
->sc_ah
;
983 struct ath_common
*common
= ath9k_hw_common(ah
);
984 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
985 struct ath9k_channel
*init_channel
;
988 ath_dbg(common
, CONFIG
,
989 "Starting driver with initial channel: %d MHz\n",
990 curchan
->center_freq
);
993 mutex_lock(&sc
->mutex
);
995 init_channel
= ath9k_cmn_get_curchannel(hw
, ah
);
997 /* Reset SERDES registers */
998 ath9k_hw_configpcipowersave(ah
, false);
1001 * The basic interface to setting the hardware in a good
1002 * state is ``reset''. On return the hardware is known to
1003 * be powered up and with interrupts disabled. This must
1004 * be followed by initialization of the appropriate bits
1005 * and then setup of the interrupt mask.
1007 spin_lock_bh(&sc
->sc_pcu_lock
);
1009 atomic_set(&ah
->intr_ref_cnt
, -1);
1011 r
= ath9k_hw_reset(ah
, init_channel
, ah
->caldata
, false);
1014 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
1015 r
, curchan
->center_freq
);
1016 spin_unlock_bh(&sc
->sc_pcu_lock
);
1020 /* Setup our intr mask. */
1021 ah
->imask
= ATH9K_INT_TX
| ATH9K_INT_RXEOL
|
1022 ATH9K_INT_RXORN
| ATH9K_INT_FATAL
|
1025 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
1026 ah
->imask
|= ATH9K_INT_RXHP
|
1028 ATH9K_INT_BB_WATCHDOG
;
1030 ah
->imask
|= ATH9K_INT_RX
;
1032 ah
->imask
|= ATH9K_INT_GTT
;
1034 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
1035 ah
->imask
|= ATH9K_INT_CST
;
1037 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_MCI
)
1038 ah
->imask
|= ATH9K_INT_MCI
;
1040 sc
->sc_flags
&= ~SC_OP_INVALID
;
1041 sc
->sc_ah
->is_monitoring
= false;
1043 if (!ath_complete_reset(sc
, false)) {
1045 spin_unlock_bh(&sc
->sc_pcu_lock
);
1049 if (ah
->led_pin
>= 0) {
1050 ath9k_hw_cfg_output(ah
, ah
->led_pin
,
1051 AR_GPIO_OUTPUT_MUX_AS_OUTPUT
);
1052 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 0);
1056 * Reset key cache to sane defaults (all entries cleared) instead of
1057 * semi-random values after suspend/resume.
1059 ath9k_cmn_init_crypto(sc
->sc_ah
);
1061 spin_unlock_bh(&sc
->sc_pcu_lock
);
1063 ath9k_start_btcoex(sc
);
1065 if (ah
->caps
.pcie_lcr_extsync_en
&& common
->bus_ops
->extn_synch_en
)
1066 common
->bus_ops
->extn_synch_en(common
);
1069 mutex_unlock(&sc
->mutex
);
1071 ath9k_ps_restore(sc
);
1076 static void ath9k_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
1078 struct ath_softc
*sc
= hw
->priv
;
1079 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1080 struct ath_tx_control txctl
;
1081 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
1083 if (sc
->ps_enabled
) {
1085 * mac80211 does not set PM field for normal data frames, so we
1086 * need to update that based on the current PS mode.
1088 if (ieee80211_is_data(hdr
->frame_control
) &&
1089 !ieee80211_is_nullfunc(hdr
->frame_control
) &&
1090 !ieee80211_has_pm(hdr
->frame_control
)) {
1092 "Add PM=1 for a TX frame while in PS mode\n");
1093 hdr
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
1098 * Cannot tx while the hardware is in full sleep, it first needs a full
1099 * chip reset to recover from that
1101 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_FULL_SLEEP
))
1104 if (unlikely(sc
->sc_ah
->power_mode
!= ATH9K_PM_AWAKE
)) {
1106 * We are using PS-Poll and mac80211 can request TX while in
1107 * power save mode. Need to wake up hardware for the TX to be
1108 * completed and if needed, also for RX of buffered frames.
1110 ath9k_ps_wakeup(sc
);
1111 if (!(sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
1112 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
1113 if (ieee80211_is_pspoll(hdr
->frame_control
)) {
1115 "Sending PS-Poll to pick a buffered frame\n");
1116 sc
->ps_flags
|= PS_WAIT_FOR_PSPOLL_DATA
;
1118 ath_dbg(common
, PS
, "Wake up to complete TX\n");
1119 sc
->ps_flags
|= PS_WAIT_FOR_TX_ACK
;
1122 * The actual restore operation will happen only after
1123 * the sc_flags bit is cleared. We are just dropping
1124 * the ps_usecount here.
1126 ath9k_ps_restore(sc
);
1129 memset(&txctl
, 0, sizeof(struct ath_tx_control
));
1130 txctl
.txq
= sc
->tx
.txq_map
[skb_get_queue_mapping(skb
)];
1132 ath_dbg(common
, XMIT
, "transmitting packet, skb: %p\n", skb
);
1134 if (ath_tx_start(hw
, skb
, &txctl
) != 0) {
1135 ath_dbg(common
, XMIT
, "TX failed\n");
1141 dev_kfree_skb_any(skb
);
1144 static void ath9k_stop(struct ieee80211_hw
*hw
)
1146 struct ath_softc
*sc
= hw
->priv
;
1147 struct ath_hw
*ah
= sc
->sc_ah
;
1148 struct ath_common
*common
= ath9k_hw_common(ah
);
1151 mutex_lock(&sc
->mutex
);
1153 ath_cancel_work(sc
);
1155 if (sc
->sc_flags
& SC_OP_INVALID
) {
1156 ath_dbg(common
, ANY
, "Device not present\n");
1157 mutex_unlock(&sc
->mutex
);
1161 /* Ensure HW is awake when we try to shut it down. */
1162 ath9k_ps_wakeup(sc
);
1164 ath9k_stop_btcoex(sc
);
1166 spin_lock_bh(&sc
->sc_pcu_lock
);
1168 /* prevent tasklets to enable interrupts once we disable them */
1169 ah
->imask
&= ~ATH9K_INT_GLOBAL
;
1171 /* make sure h/w will not generate any interrupt
1172 * before setting the invalid flag. */
1173 ath9k_hw_disable_interrupts(ah
);
1175 spin_unlock_bh(&sc
->sc_pcu_lock
);
1177 /* we can now sync irq and kill any running tasklets, since we already
1178 * disabled interrupts and not holding a spin lock */
1179 synchronize_irq(sc
->irq
);
1180 tasklet_kill(&sc
->intr_tq
);
1181 tasklet_kill(&sc
->bcon_tasklet
);
1183 prev_idle
= sc
->ps_idle
;
1186 spin_lock_bh(&sc
->sc_pcu_lock
);
1188 if (ah
->led_pin
>= 0) {
1189 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 1);
1190 ath9k_hw_cfg_gpio_input(ah
, ah
->led_pin
);
1193 ath_prepare_reset(sc
, false, true);
1196 dev_kfree_skb_any(sc
->rx
.frag
);
1201 ah
->curchan
= ath9k_cmn_get_curchannel(hw
, ah
);
1203 ath9k_hw_reset(ah
, ah
->curchan
, ah
->caldata
, false);
1204 ath9k_hw_phy_disable(ah
);
1206 ath9k_hw_configpcipowersave(ah
, true);
1208 spin_unlock_bh(&sc
->sc_pcu_lock
);
1210 ath9k_ps_restore(sc
);
1212 sc
->sc_flags
|= SC_OP_INVALID
;
1213 sc
->ps_idle
= prev_idle
;
1215 mutex_unlock(&sc
->mutex
);
1217 ath_dbg(common
, CONFIG
, "Driver halt\n");
1220 bool ath9k_uses_beacons(int type
)
1223 case NL80211_IFTYPE_AP
:
1224 case NL80211_IFTYPE_ADHOC
:
1225 case NL80211_IFTYPE_MESH_POINT
:
1232 static void ath9k_reclaim_beacon(struct ath_softc
*sc
,
1233 struct ieee80211_vif
*vif
)
1235 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1237 ath9k_set_beaconing_status(sc
, false);
1238 ath_beacon_return(sc
, avp
);
1239 ath9k_set_beaconing_status(sc
, true);
1240 sc
->sc_flags
&= ~SC_OP_BEACONS
;
1243 static void ath9k_vif_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
1245 struct ath9k_vif_iter_data
*iter_data
= data
;
1248 if (iter_data
->hw_macaddr
)
1249 for (i
= 0; i
< ETH_ALEN
; i
++)
1250 iter_data
->mask
[i
] &=
1251 ~(iter_data
->hw_macaddr
[i
] ^ mac
[i
]);
1253 switch (vif
->type
) {
1254 case NL80211_IFTYPE_AP
:
1257 case NL80211_IFTYPE_STATION
:
1258 iter_data
->nstations
++;
1260 case NL80211_IFTYPE_ADHOC
:
1261 iter_data
->nadhocs
++;
1263 case NL80211_IFTYPE_MESH_POINT
:
1264 iter_data
->nmeshes
++;
1266 case NL80211_IFTYPE_WDS
:
1274 /* Called with sc->mutex held. */
1275 void ath9k_calculate_iter_data(struct ieee80211_hw
*hw
,
1276 struct ieee80211_vif
*vif
,
1277 struct ath9k_vif_iter_data
*iter_data
)
1279 struct ath_softc
*sc
= hw
->priv
;
1280 struct ath_hw
*ah
= sc
->sc_ah
;
1281 struct ath_common
*common
= ath9k_hw_common(ah
);
1284 * Use the hardware MAC address as reference, the hardware uses it
1285 * together with the BSSID mask when matching addresses.
1287 memset(iter_data
, 0, sizeof(*iter_data
));
1288 iter_data
->hw_macaddr
= common
->macaddr
;
1289 memset(&iter_data
->mask
, 0xff, ETH_ALEN
);
1292 ath9k_vif_iter(iter_data
, vif
->addr
, vif
);
1294 /* Get list of all active MAC addresses */
1295 ieee80211_iterate_active_interfaces_atomic(sc
->hw
, ath9k_vif_iter
,
1299 /* Called with sc->mutex held. */
1300 static void ath9k_calculate_summary_state(struct ieee80211_hw
*hw
,
1301 struct ieee80211_vif
*vif
)
1303 struct ath_softc
*sc
= hw
->priv
;
1304 struct ath_hw
*ah
= sc
->sc_ah
;
1305 struct ath_common
*common
= ath9k_hw_common(ah
);
1306 struct ath9k_vif_iter_data iter_data
;
1308 ath9k_calculate_iter_data(hw
, vif
, &iter_data
);
1310 /* Set BSSID mask. */
1311 memcpy(common
->bssidmask
, iter_data
.mask
, ETH_ALEN
);
1312 ath_hw_setbssidmask(common
);
1314 /* Set op-mode & TSF */
1315 if (iter_data
.naps
> 0) {
1316 ath9k_hw_set_tsfadjust(ah
, 1);
1317 sc
->sc_flags
|= SC_OP_TSF_RESET
;
1318 ah
->opmode
= NL80211_IFTYPE_AP
;
1320 ath9k_hw_set_tsfadjust(ah
, 0);
1321 sc
->sc_flags
&= ~SC_OP_TSF_RESET
;
1323 if (iter_data
.nmeshes
)
1324 ah
->opmode
= NL80211_IFTYPE_MESH_POINT
;
1325 else if (iter_data
.nwds
)
1326 ah
->opmode
= NL80211_IFTYPE_AP
;
1327 else if (iter_data
.nadhocs
)
1328 ah
->opmode
= NL80211_IFTYPE_ADHOC
;
1330 ah
->opmode
= NL80211_IFTYPE_STATION
;
1334 * Enable MIB interrupts when there are hardware phy counters.
1336 if ((iter_data
.nstations
+ iter_data
.nadhocs
+ iter_data
.nmeshes
) > 0) {
1337 if (ah
->config
.enable_ani
)
1338 ah
->imask
|= ATH9K_INT_MIB
;
1339 ah
->imask
|= ATH9K_INT_TSFOOR
;
1341 ah
->imask
&= ~ATH9K_INT_MIB
;
1342 ah
->imask
&= ~ATH9K_INT_TSFOOR
;
1345 ath9k_hw_set_interrupts(ah
);
1348 if (iter_data
.naps
> 0) {
1349 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
1351 if (!common
->disable_ani
) {
1352 sc
->sc_flags
|= SC_OP_ANI_RUN
;
1353 ath_start_ani(common
);
1357 sc
->sc_flags
&= ~SC_OP_ANI_RUN
;
1358 del_timer_sync(&common
->ani
.timer
);
1362 /* Called with sc->mutex held, vif counts set up properly. */
1363 static void ath9k_do_vif_add_setup(struct ieee80211_hw
*hw
,
1364 struct ieee80211_vif
*vif
)
1366 struct ath_softc
*sc
= hw
->priv
;
1368 ath9k_calculate_summary_state(hw
, vif
);
1370 if (ath9k_uses_beacons(vif
->type
)) {
1372 /* This may fail because upper levels do not have beacons
1373 * properly configured yet. That's OK, we assume it
1374 * will be properly configured and then we will be notified
1375 * in the info_changed method and set up beacons properly
1378 ath9k_set_beaconing_status(sc
, false);
1379 error
= ath_beacon_alloc(sc
, vif
);
1381 ath_beacon_config(sc
, vif
);
1382 ath9k_set_beaconing_status(sc
, true);
1387 static int ath9k_add_interface(struct ieee80211_hw
*hw
,
1388 struct ieee80211_vif
*vif
)
1390 struct ath_softc
*sc
= hw
->priv
;
1391 struct ath_hw
*ah
= sc
->sc_ah
;
1392 struct ath_common
*common
= ath9k_hw_common(ah
);
1395 ath9k_ps_wakeup(sc
);
1396 mutex_lock(&sc
->mutex
);
1398 switch (vif
->type
) {
1399 case NL80211_IFTYPE_STATION
:
1400 case NL80211_IFTYPE_WDS
:
1401 case NL80211_IFTYPE_ADHOC
:
1402 case NL80211_IFTYPE_AP
:
1403 case NL80211_IFTYPE_MESH_POINT
:
1406 ath_err(common
, "Interface type %d not yet supported\n",
1412 if (ath9k_uses_beacons(vif
->type
)) {
1413 if (sc
->nbcnvifs
>= ATH_BCBUF
) {
1414 ath_err(common
, "Not enough beacon buffers when adding"
1415 " new interface of type: %i\n",
1422 if ((ah
->opmode
== NL80211_IFTYPE_ADHOC
) ||
1423 ((vif
->type
== NL80211_IFTYPE_ADHOC
) &&
1425 ath_err(common
, "Cannot create ADHOC interface when other"
1426 " interfaces already exist.\n");
1431 ath_dbg(common
, CONFIG
, "Attach a VIF of type: %d\n", vif
->type
);
1435 ath9k_do_vif_add_setup(hw
, vif
);
1437 mutex_unlock(&sc
->mutex
);
1438 ath9k_ps_restore(sc
);
1442 static int ath9k_change_interface(struct ieee80211_hw
*hw
,
1443 struct ieee80211_vif
*vif
,
1444 enum nl80211_iftype new_type
,
1447 struct ath_softc
*sc
= hw
->priv
;
1448 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1451 ath_dbg(common
, CONFIG
, "Change Interface\n");
1452 mutex_lock(&sc
->mutex
);
1453 ath9k_ps_wakeup(sc
);
1455 /* See if new interface type is valid. */
1456 if ((new_type
== NL80211_IFTYPE_ADHOC
) &&
1458 ath_err(common
, "When using ADHOC, it must be the only"
1464 if (ath9k_uses_beacons(new_type
) &&
1465 !ath9k_uses_beacons(vif
->type
)) {
1466 if (sc
->nbcnvifs
>= ATH_BCBUF
) {
1467 ath_err(common
, "No beacon slot available\n");
1473 /* Clean up old vif stuff */
1474 if (ath9k_uses_beacons(vif
->type
))
1475 ath9k_reclaim_beacon(sc
, vif
);
1477 /* Add new settings */
1478 vif
->type
= new_type
;
1481 ath9k_do_vif_add_setup(hw
, vif
);
1483 ath9k_ps_restore(sc
);
1484 mutex_unlock(&sc
->mutex
);
1488 static void ath9k_remove_interface(struct ieee80211_hw
*hw
,
1489 struct ieee80211_vif
*vif
)
1491 struct ath_softc
*sc
= hw
->priv
;
1492 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1494 ath_dbg(common
, CONFIG
, "Detach Interface\n");
1496 ath9k_ps_wakeup(sc
);
1497 mutex_lock(&sc
->mutex
);
1501 /* Reclaim beacon resources */
1502 if (ath9k_uses_beacons(vif
->type
))
1503 ath9k_reclaim_beacon(sc
, vif
);
1505 ath9k_calculate_summary_state(hw
, NULL
);
1507 mutex_unlock(&sc
->mutex
);
1508 ath9k_ps_restore(sc
);
1511 static void ath9k_enable_ps(struct ath_softc
*sc
)
1513 struct ath_hw
*ah
= sc
->sc_ah
;
1515 sc
->ps_enabled
= true;
1516 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1517 if ((ah
->imask
& ATH9K_INT_TIM_TIMER
) == 0) {
1518 ah
->imask
|= ATH9K_INT_TIM_TIMER
;
1519 ath9k_hw_set_interrupts(ah
);
1521 ath9k_hw_setrxabort(ah
, 1);
1525 static void ath9k_disable_ps(struct ath_softc
*sc
)
1527 struct ath_hw
*ah
= sc
->sc_ah
;
1529 sc
->ps_enabled
= false;
1530 ath9k_hw_setpower(ah
, ATH9K_PM_AWAKE
);
1531 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1532 ath9k_hw_setrxabort(ah
, 0);
1533 sc
->ps_flags
&= ~(PS_WAIT_FOR_BEACON
|
1535 PS_WAIT_FOR_PSPOLL_DATA
|
1536 PS_WAIT_FOR_TX_ACK
);
1537 if (ah
->imask
& ATH9K_INT_TIM_TIMER
) {
1538 ah
->imask
&= ~ATH9K_INT_TIM_TIMER
;
1539 ath9k_hw_set_interrupts(ah
);
1545 static int ath9k_config(struct ieee80211_hw
*hw
, u32 changed
)
1547 struct ath_softc
*sc
= hw
->priv
;
1548 struct ath_hw
*ah
= sc
->sc_ah
;
1549 struct ath_common
*common
= ath9k_hw_common(ah
);
1550 struct ieee80211_conf
*conf
= &hw
->conf
;
1552 ath9k_ps_wakeup(sc
);
1553 mutex_lock(&sc
->mutex
);
1555 if (changed
& IEEE80211_CONF_CHANGE_IDLE
) {
1556 sc
->ps_idle
= !!(conf
->flags
& IEEE80211_CONF_IDLE
);
1558 ath_cancel_work(sc
);
1562 * We just prepare to enable PS. We have to wait until our AP has
1563 * ACK'd our null data frame to disable RX otherwise we'll ignore
1564 * those ACKs and end up retransmitting the same null data frames.
1565 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1567 if (changed
& IEEE80211_CONF_CHANGE_PS
) {
1568 unsigned long flags
;
1569 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
1570 if (conf
->flags
& IEEE80211_CONF_PS
)
1571 ath9k_enable_ps(sc
);
1573 ath9k_disable_ps(sc
);
1574 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
1577 if (changed
& IEEE80211_CONF_CHANGE_MONITOR
) {
1578 if (conf
->flags
& IEEE80211_CONF_MONITOR
) {
1579 ath_dbg(common
, CONFIG
, "Monitor mode is enabled\n");
1580 sc
->sc_ah
->is_monitoring
= true;
1582 ath_dbg(common
, CONFIG
, "Monitor mode is disabled\n");
1583 sc
->sc_ah
->is_monitoring
= false;
1587 if (changed
& IEEE80211_CONF_CHANGE_CHANNEL
) {
1588 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
1589 int pos
= curchan
->hw_value
;
1591 unsigned long flags
;
1594 old_pos
= ah
->curchan
- &ah
->channels
[0];
1596 if (hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
)
1597 sc
->sc_flags
|= SC_OP_OFFCHANNEL
;
1599 sc
->sc_flags
&= ~SC_OP_OFFCHANNEL
;
1601 ath_dbg(common
, CONFIG
, "Set channel: %d MHz type: %d\n",
1602 curchan
->center_freq
, conf
->channel_type
);
1604 /* update survey stats for the old channel before switching */
1605 spin_lock_irqsave(&common
->cc_lock
, flags
);
1606 ath_update_survey_stats(sc
);
1607 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1610 * Preserve the current channel values, before updating
1613 if (ah
->curchan
&& (old_pos
== pos
))
1614 ath9k_hw_getnf(ah
, ah
->curchan
);
1616 ath9k_cmn_update_ichannel(&sc
->sc_ah
->channels
[pos
],
1617 curchan
, conf
->channel_type
);
1620 * If the operating channel changes, change the survey in-use flags
1622 * Reset the survey data for the new channel, unless we're switching
1623 * back to the operating channel from an off-channel operation.
1625 if (!(hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
) &&
1626 sc
->cur_survey
!= &sc
->survey
[pos
]) {
1629 sc
->cur_survey
->filled
&= ~SURVEY_INFO_IN_USE
;
1631 sc
->cur_survey
= &sc
->survey
[pos
];
1633 memset(sc
->cur_survey
, 0, sizeof(struct survey_info
));
1634 sc
->cur_survey
->filled
|= SURVEY_INFO_IN_USE
;
1635 } else if (!(sc
->survey
[pos
].filled
& SURVEY_INFO_IN_USE
)) {
1636 memset(&sc
->survey
[pos
], 0, sizeof(struct survey_info
));
1639 if (ath_set_channel(sc
, hw
, &sc
->sc_ah
->channels
[pos
]) < 0) {
1640 ath_err(common
, "Unable to set channel\n");
1641 mutex_unlock(&sc
->mutex
);
1646 * The most recent snapshot of channel->noisefloor for the old
1647 * channel is only available after the hardware reset. Copy it to
1648 * the survey stats now.
1651 ath_update_survey_nf(sc
, old_pos
);
1654 if (changed
& IEEE80211_CONF_CHANGE_POWER
) {
1655 ath_dbg(common
, CONFIG
, "Set power: %d\n", conf
->power_level
);
1656 sc
->config
.txpowlimit
= 2 * conf
->power_level
;
1657 ath9k_cmn_update_txpow(ah
, sc
->curtxpow
,
1658 sc
->config
.txpowlimit
, &sc
->curtxpow
);
1661 mutex_unlock(&sc
->mutex
);
1662 ath9k_ps_restore(sc
);
1667 #define SUPPORTED_FILTERS \
1668 (FIF_PROMISC_IN_BSS | \
1673 FIF_BCN_PRBRESP_PROMISC | \
1677 /* FIXME: sc->sc_full_reset ? */
1678 static void ath9k_configure_filter(struct ieee80211_hw
*hw
,
1679 unsigned int changed_flags
,
1680 unsigned int *total_flags
,
1683 struct ath_softc
*sc
= hw
->priv
;
1686 changed_flags
&= SUPPORTED_FILTERS
;
1687 *total_flags
&= SUPPORTED_FILTERS
;
1689 sc
->rx
.rxfilter
= *total_flags
;
1690 ath9k_ps_wakeup(sc
);
1691 rfilt
= ath_calcrxfilter(sc
);
1692 ath9k_hw_setrxfilter(sc
->sc_ah
, rfilt
);
1693 ath9k_ps_restore(sc
);
1695 ath_dbg(ath9k_hw_common(sc
->sc_ah
), CONFIG
, "Set HW RX filter: 0x%x\n",
1699 static int ath9k_sta_add(struct ieee80211_hw
*hw
,
1700 struct ieee80211_vif
*vif
,
1701 struct ieee80211_sta
*sta
)
1703 struct ath_softc
*sc
= hw
->priv
;
1704 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1705 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1706 struct ieee80211_key_conf ps_key
= { };
1708 ath_node_attach(sc
, sta
, vif
);
1710 if (vif
->type
!= NL80211_IFTYPE_AP
&&
1711 vif
->type
!= NL80211_IFTYPE_AP_VLAN
)
1714 an
->ps_key
= ath_key_config(common
, vif
, sta
, &ps_key
);
1719 static void ath9k_del_ps_key(struct ath_softc
*sc
,
1720 struct ieee80211_vif
*vif
,
1721 struct ieee80211_sta
*sta
)
1723 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1724 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1725 struct ieee80211_key_conf ps_key
= { .hw_key_idx
= an
->ps_key
};
1730 ath_key_delete(common
, &ps_key
);
1733 static int ath9k_sta_remove(struct ieee80211_hw
*hw
,
1734 struct ieee80211_vif
*vif
,
1735 struct ieee80211_sta
*sta
)
1737 struct ath_softc
*sc
= hw
->priv
;
1739 ath9k_del_ps_key(sc
, vif
, sta
);
1740 ath_node_detach(sc
, sta
);
1745 static void ath9k_sta_notify(struct ieee80211_hw
*hw
,
1746 struct ieee80211_vif
*vif
,
1747 enum sta_notify_cmd cmd
,
1748 struct ieee80211_sta
*sta
)
1750 struct ath_softc
*sc
= hw
->priv
;
1751 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1753 if (!sta
->ht_cap
.ht_supported
)
1757 case STA_NOTIFY_SLEEP
:
1758 an
->sleeping
= true;
1759 ath_tx_aggr_sleep(sta
, sc
, an
);
1761 case STA_NOTIFY_AWAKE
:
1762 an
->sleeping
= false;
1763 ath_tx_aggr_wakeup(sc
, an
);
1768 static int ath9k_conf_tx(struct ieee80211_hw
*hw
,
1769 struct ieee80211_vif
*vif
, u16 queue
,
1770 const struct ieee80211_tx_queue_params
*params
)
1772 struct ath_softc
*sc
= hw
->priv
;
1773 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1774 struct ath_txq
*txq
;
1775 struct ath9k_tx_queue_info qi
;
1778 if (queue
>= WME_NUM_AC
)
1781 txq
= sc
->tx
.txq_map
[queue
];
1783 ath9k_ps_wakeup(sc
);
1784 mutex_lock(&sc
->mutex
);
1786 memset(&qi
, 0, sizeof(struct ath9k_tx_queue_info
));
1788 qi
.tqi_aifs
= params
->aifs
;
1789 qi
.tqi_cwmin
= params
->cw_min
;
1790 qi
.tqi_cwmax
= params
->cw_max
;
1791 qi
.tqi_burstTime
= params
->txop
;
1793 ath_dbg(common
, CONFIG
,
1794 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1795 queue
, txq
->axq_qnum
, params
->aifs
, params
->cw_min
,
1796 params
->cw_max
, params
->txop
);
1798 ret
= ath_txq_update(sc
, txq
->axq_qnum
, &qi
);
1800 ath_err(common
, "TXQ Update failed\n");
1802 if (sc
->sc_ah
->opmode
== NL80211_IFTYPE_ADHOC
)
1803 if (queue
== WME_AC_BE
&& !ret
)
1804 ath_beaconq_config(sc
);
1806 mutex_unlock(&sc
->mutex
);
1807 ath9k_ps_restore(sc
);
1812 static int ath9k_set_key(struct ieee80211_hw
*hw
,
1813 enum set_key_cmd cmd
,
1814 struct ieee80211_vif
*vif
,
1815 struct ieee80211_sta
*sta
,
1816 struct ieee80211_key_conf
*key
)
1818 struct ath_softc
*sc
= hw
->priv
;
1819 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1822 if (ath9k_modparam_nohwcrypt
)
1825 if ((vif
->type
== NL80211_IFTYPE_ADHOC
||
1826 vif
->type
== NL80211_IFTYPE_MESH_POINT
) &&
1827 (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
||
1828 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
) &&
1829 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
1831 * For now, disable hw crypto for the RSN IBSS group keys. This
1832 * could be optimized in the future to use a modified key cache
1833 * design to support per-STA RX GTK, but until that gets
1834 * implemented, use of software crypto for group addressed
1835 * frames is a acceptable to allow RSN IBSS to be used.
1840 mutex_lock(&sc
->mutex
);
1841 ath9k_ps_wakeup(sc
);
1842 ath_dbg(common
, CONFIG
, "Set HW Key\n");
1847 ath9k_del_ps_key(sc
, vif
, sta
);
1849 ret
= ath_key_config(common
, vif
, sta
, key
);
1851 key
->hw_key_idx
= ret
;
1852 /* push IV and Michael MIC generation to stack */
1853 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
1854 if (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
)
1855 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
1856 if (sc
->sc_ah
->sw_mgmt_crypto
&&
1857 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
)
1858 key
->flags
|= IEEE80211_KEY_FLAG_SW_MGMT
;
1863 ath_key_delete(common
, key
);
1869 ath9k_ps_restore(sc
);
1870 mutex_unlock(&sc
->mutex
);
1874 static void ath9k_bss_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
1876 struct ath_softc
*sc
= data
;
1877 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1878 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1879 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1882 * Skip iteration if primary station vif's bss info
1885 if (sc
->sc_flags
& SC_OP_PRIM_STA_VIF
)
1888 if (bss_conf
->assoc
) {
1889 sc
->sc_flags
|= SC_OP_PRIM_STA_VIF
;
1890 avp
->primary_sta_vif
= true;
1891 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
1892 common
->curaid
= bss_conf
->aid
;
1893 ath9k_hw_write_associd(sc
->sc_ah
);
1894 ath_dbg(common
, CONFIG
, "Bss Info ASSOC %d, bssid: %pM\n",
1895 bss_conf
->aid
, common
->curbssid
);
1896 ath_beacon_config(sc
, vif
);
1898 * Request a re-configuration of Beacon related timers
1899 * on the receipt of the first Beacon frame (i.e.,
1900 * after time sync with the AP).
1902 sc
->ps_flags
|= PS_BEACON_SYNC
| PS_WAIT_FOR_BEACON
;
1903 /* Reset rssi stats */
1904 sc
->last_rssi
= ATH_RSSI_DUMMY_MARKER
;
1905 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
1907 if (!common
->disable_ani
) {
1908 sc
->sc_flags
|= SC_OP_ANI_RUN
;
1909 ath_start_ani(common
);
1915 static void ath9k_config_bss(struct ath_softc
*sc
, struct ieee80211_vif
*vif
)
1917 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1918 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1919 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1921 if (sc
->sc_ah
->opmode
!= NL80211_IFTYPE_STATION
)
1924 /* Reconfigure bss info */
1925 if (avp
->primary_sta_vif
&& !bss_conf
->assoc
) {
1926 ath_dbg(common
, CONFIG
, "Bss Info DISASSOC %d, bssid %pM\n",
1927 common
->curaid
, common
->curbssid
);
1928 sc
->sc_flags
&= ~(SC_OP_PRIM_STA_VIF
| SC_OP_BEACONS
);
1929 avp
->primary_sta_vif
= false;
1930 memset(common
->curbssid
, 0, ETH_ALEN
);
1934 ieee80211_iterate_active_interfaces_atomic(
1935 sc
->hw
, ath9k_bss_iter
, sc
);
1938 * None of station vifs are associated.
1941 if (!(sc
->sc_flags
& SC_OP_PRIM_STA_VIF
)) {
1942 ath9k_hw_write_associd(sc
->sc_ah
);
1944 sc
->sc_flags
&= ~SC_OP_ANI_RUN
;
1945 del_timer_sync(&common
->ani
.timer
);
1946 memset(&sc
->caldata
, 0, sizeof(sc
->caldata
));
1950 static void ath9k_bss_info_changed(struct ieee80211_hw
*hw
,
1951 struct ieee80211_vif
*vif
,
1952 struct ieee80211_bss_conf
*bss_conf
,
1955 struct ath_softc
*sc
= hw
->priv
;
1956 struct ath_hw
*ah
= sc
->sc_ah
;
1957 struct ath_common
*common
= ath9k_hw_common(ah
);
1958 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1962 ath9k_ps_wakeup(sc
);
1963 mutex_lock(&sc
->mutex
);
1965 if (changed
& BSS_CHANGED_ASSOC
) {
1966 ath9k_config_bss(sc
, vif
);
1968 ath_dbg(common
, CONFIG
, "BSSID: %pM aid: 0x%x\n",
1969 common
->curbssid
, common
->curaid
);
1972 if (changed
& BSS_CHANGED_IBSS
) {
1973 /* There can be only one vif available */
1974 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
1975 common
->curaid
= bss_conf
->aid
;
1976 ath9k_hw_write_associd(sc
->sc_ah
);
1978 if (bss_conf
->ibss_joined
) {
1979 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
1981 if (!common
->disable_ani
) {
1982 sc
->sc_flags
|= SC_OP_ANI_RUN
;
1983 ath_start_ani(common
);
1987 sc
->sc_flags
&= ~SC_OP_ANI_RUN
;
1988 del_timer_sync(&common
->ani
.timer
);
1992 /* Enable transmission of beacons (AP, IBSS, MESH) */
1993 if ((changed
& BSS_CHANGED_BEACON
) ||
1994 ((changed
& BSS_CHANGED_BEACON_ENABLED
) && bss_conf
->enable_beacon
)) {
1995 ath9k_set_beaconing_status(sc
, false);
1996 error
= ath_beacon_alloc(sc
, vif
);
1998 ath_beacon_config(sc
, vif
);
1999 ath9k_set_beaconing_status(sc
, true);
2002 if (changed
& BSS_CHANGED_ERP_SLOT
) {
2003 if (bss_conf
->use_short_slot
)
2007 if (vif
->type
== NL80211_IFTYPE_AP
) {
2009 * Defer update, so that connected stations can adjust
2010 * their settings at the same time.
2011 * See beacon.c for more details
2013 sc
->beacon
.slottime
= slottime
;
2014 sc
->beacon
.updateslot
= UPDATE
;
2016 ah
->slottime
= slottime
;
2017 ath9k_hw_init_global_settings(ah
);
2021 /* Disable transmission of beacons */
2022 if ((changed
& BSS_CHANGED_BEACON_ENABLED
) &&
2023 !bss_conf
->enable_beacon
) {
2024 ath9k_set_beaconing_status(sc
, false);
2025 avp
->is_bslot_active
= false;
2026 ath9k_set_beaconing_status(sc
, true);
2029 if (changed
& BSS_CHANGED_BEACON_INT
) {
2031 * In case of AP mode, the HW TSF has to be reset
2032 * when the beacon interval changes.
2034 if (vif
->type
== NL80211_IFTYPE_AP
) {
2035 sc
->sc_flags
|= SC_OP_TSF_RESET
;
2036 ath9k_set_beaconing_status(sc
, false);
2037 error
= ath_beacon_alloc(sc
, vif
);
2039 ath_beacon_config(sc
, vif
);
2040 ath9k_set_beaconing_status(sc
, true);
2042 ath_beacon_config(sc
, vif
);
2045 mutex_unlock(&sc
->mutex
);
2046 ath9k_ps_restore(sc
);
2049 static u64
ath9k_get_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
2051 struct ath_softc
*sc
= hw
->priv
;
2054 mutex_lock(&sc
->mutex
);
2055 ath9k_ps_wakeup(sc
);
2056 tsf
= ath9k_hw_gettsf64(sc
->sc_ah
);
2057 ath9k_ps_restore(sc
);
2058 mutex_unlock(&sc
->mutex
);
2063 static void ath9k_set_tsf(struct ieee80211_hw
*hw
,
2064 struct ieee80211_vif
*vif
,
2067 struct ath_softc
*sc
= hw
->priv
;
2069 mutex_lock(&sc
->mutex
);
2070 ath9k_ps_wakeup(sc
);
2071 ath9k_hw_settsf64(sc
->sc_ah
, tsf
);
2072 ath9k_ps_restore(sc
);
2073 mutex_unlock(&sc
->mutex
);
2076 static void ath9k_reset_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
2078 struct ath_softc
*sc
= hw
->priv
;
2080 mutex_lock(&sc
->mutex
);
2082 ath9k_ps_wakeup(sc
);
2083 ath9k_hw_reset_tsf(sc
->sc_ah
);
2084 ath9k_ps_restore(sc
);
2086 mutex_unlock(&sc
->mutex
);
2089 static int ath9k_ampdu_action(struct ieee80211_hw
*hw
,
2090 struct ieee80211_vif
*vif
,
2091 enum ieee80211_ampdu_mlme_action action
,
2092 struct ieee80211_sta
*sta
,
2093 u16 tid
, u16
*ssn
, u8 buf_size
)
2095 struct ath_softc
*sc
= hw
->priv
;
2101 case IEEE80211_AMPDU_RX_START
:
2103 case IEEE80211_AMPDU_RX_STOP
:
2105 case IEEE80211_AMPDU_TX_START
:
2106 ath9k_ps_wakeup(sc
);
2107 ret
= ath_tx_aggr_start(sc
, sta
, tid
, ssn
);
2109 ieee80211_start_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
2110 ath9k_ps_restore(sc
);
2112 case IEEE80211_AMPDU_TX_STOP
:
2113 ath9k_ps_wakeup(sc
);
2114 ath_tx_aggr_stop(sc
, sta
, tid
);
2115 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
2116 ath9k_ps_restore(sc
);
2118 case IEEE80211_AMPDU_TX_OPERATIONAL
:
2119 ath9k_ps_wakeup(sc
);
2120 ath_tx_aggr_resume(sc
, sta
, tid
);
2121 ath9k_ps_restore(sc
);
2124 ath_err(ath9k_hw_common(sc
->sc_ah
), "Unknown AMPDU action\n");
2132 static int ath9k_get_survey(struct ieee80211_hw
*hw
, int idx
,
2133 struct survey_info
*survey
)
2135 struct ath_softc
*sc
= hw
->priv
;
2136 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
2137 struct ieee80211_supported_band
*sband
;
2138 struct ieee80211_channel
*chan
;
2139 unsigned long flags
;
2142 spin_lock_irqsave(&common
->cc_lock
, flags
);
2144 ath_update_survey_stats(sc
);
2146 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
];
2147 if (sband
&& idx
>= sband
->n_channels
) {
2148 idx
-= sband
->n_channels
;
2153 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
];
2155 if (!sband
|| idx
>= sband
->n_channels
) {
2156 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
2160 chan
= &sband
->channels
[idx
];
2161 pos
= chan
->hw_value
;
2162 memcpy(survey
, &sc
->survey
[pos
], sizeof(*survey
));
2163 survey
->channel
= chan
;
2164 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
2169 static void ath9k_set_coverage_class(struct ieee80211_hw
*hw
, u8 coverage_class
)
2171 struct ath_softc
*sc
= hw
->priv
;
2172 struct ath_hw
*ah
= sc
->sc_ah
;
2174 mutex_lock(&sc
->mutex
);
2175 ah
->coverage_class
= coverage_class
;
2177 ath9k_ps_wakeup(sc
);
2178 ath9k_hw_init_global_settings(ah
);
2179 ath9k_ps_restore(sc
);
2181 mutex_unlock(&sc
->mutex
);
2184 static void ath9k_flush(struct ieee80211_hw
*hw
, bool drop
)
2186 struct ath_softc
*sc
= hw
->priv
;
2187 struct ath_hw
*ah
= sc
->sc_ah
;
2188 struct ath_common
*common
= ath9k_hw_common(ah
);
2189 int timeout
= 200; /* ms */
2193 mutex_lock(&sc
->mutex
);
2194 cancel_delayed_work_sync(&sc
->tx_complete_work
);
2196 if (ah
->ah_flags
& AH_UNPLUGGED
) {
2197 ath_dbg(common
, ANY
, "Device has been unplugged!\n");
2198 mutex_unlock(&sc
->mutex
);
2202 if (sc
->sc_flags
& SC_OP_INVALID
) {
2203 ath_dbg(common
, ANY
, "Device not present\n");
2204 mutex_unlock(&sc
->mutex
);
2208 for (j
= 0; j
< timeout
; j
++) {
2212 usleep_range(1000, 2000);
2214 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
2215 if (!ATH_TXQ_SETUP(sc
, i
))
2218 npend
= ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]);
2229 ath9k_ps_wakeup(sc
);
2230 spin_lock_bh(&sc
->sc_pcu_lock
);
2231 drain_txq
= ath_drain_all_txq(sc
, false);
2232 spin_unlock_bh(&sc
->sc_pcu_lock
);
2235 ath_reset(sc
, false);
2237 ath9k_ps_restore(sc
);
2238 ieee80211_wake_queues(hw
);
2241 ieee80211_queue_delayed_work(hw
, &sc
->tx_complete_work
, 0);
2242 mutex_unlock(&sc
->mutex
);
2245 static bool ath9k_tx_frames_pending(struct ieee80211_hw
*hw
)
2247 struct ath_softc
*sc
= hw
->priv
;
2250 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
2251 if (!ATH_TXQ_SETUP(sc
, i
))
2254 if (ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]))
2260 static int ath9k_tx_last_beacon(struct ieee80211_hw
*hw
)
2262 struct ath_softc
*sc
= hw
->priv
;
2263 struct ath_hw
*ah
= sc
->sc_ah
;
2264 struct ieee80211_vif
*vif
;
2265 struct ath_vif
*avp
;
2267 struct ath_tx_status ts
;
2268 bool edma
= !!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
);
2271 vif
= sc
->beacon
.bslot
[0];
2275 avp
= (void *)vif
->drv_priv
;
2276 if (!avp
->is_bslot_active
)
2279 if (!sc
->beacon
.tx_processed
&& !edma
) {
2280 tasklet_disable(&sc
->bcon_tasklet
);
2283 if (!bf
|| !bf
->bf_mpdu
)
2286 status
= ath9k_hw_txprocdesc(ah
, bf
->bf_desc
, &ts
);
2287 if (status
== -EINPROGRESS
)
2290 sc
->beacon
.tx_processed
= true;
2291 sc
->beacon
.tx_last
= !(ts
.ts_status
& ATH9K_TXERR_MASK
);
2294 tasklet_enable(&sc
->bcon_tasklet
);
2297 return sc
->beacon
.tx_last
;
2300 static int ath9k_get_stats(struct ieee80211_hw
*hw
,
2301 struct ieee80211_low_level_stats
*stats
)
2303 struct ath_softc
*sc
= hw
->priv
;
2304 struct ath_hw
*ah
= sc
->sc_ah
;
2305 struct ath9k_mib_stats
*mib_stats
= &ah
->ah_mibStats
;
2307 stats
->dot11ACKFailureCount
= mib_stats
->ackrcv_bad
;
2308 stats
->dot11RTSFailureCount
= mib_stats
->rts_bad
;
2309 stats
->dot11FCSErrorCount
= mib_stats
->fcs_bad
;
2310 stats
->dot11RTSSuccessCount
= mib_stats
->rts_good
;
2314 static u32
fill_chainmask(u32 cap
, u32
new)
2319 for (i
= 0; cap
&& new; i
++, cap
>>= 1) {
2320 if (!(cap
& BIT(0)))
2332 static int ath9k_set_antenna(struct ieee80211_hw
*hw
, u32 tx_ant
, u32 rx_ant
)
2334 struct ath_softc
*sc
= hw
->priv
;
2335 struct ath_hw
*ah
= sc
->sc_ah
;
2337 if (!rx_ant
|| !tx_ant
)
2340 sc
->ant_rx
= rx_ant
;
2341 sc
->ant_tx
= tx_ant
;
2343 if (ah
->caps
.rx_chainmask
== 1)
2346 /* AR9100 runs into calibration issues if not all rx chains are enabled */
2347 if (AR_SREV_9100(ah
))
2348 ah
->rxchainmask
= 0x7;
2350 ah
->rxchainmask
= fill_chainmask(ah
->caps
.rx_chainmask
, rx_ant
);
2352 ah
->txchainmask
= fill_chainmask(ah
->caps
.tx_chainmask
, tx_ant
);
2353 ath9k_reload_chainmask_settings(sc
);
2358 static int ath9k_get_antenna(struct ieee80211_hw
*hw
, u32
*tx_ant
, u32
*rx_ant
)
2360 struct ath_softc
*sc
= hw
->priv
;
2362 *tx_ant
= sc
->ant_tx
;
2363 *rx_ant
= sc
->ant_rx
;
2367 struct ieee80211_ops ath9k_ops
= {
2369 .start
= ath9k_start
,
2371 .add_interface
= ath9k_add_interface
,
2372 .change_interface
= ath9k_change_interface
,
2373 .remove_interface
= ath9k_remove_interface
,
2374 .config
= ath9k_config
,
2375 .configure_filter
= ath9k_configure_filter
,
2376 .sta_add
= ath9k_sta_add
,
2377 .sta_remove
= ath9k_sta_remove
,
2378 .sta_notify
= ath9k_sta_notify
,
2379 .conf_tx
= ath9k_conf_tx
,
2380 .bss_info_changed
= ath9k_bss_info_changed
,
2381 .set_key
= ath9k_set_key
,
2382 .get_tsf
= ath9k_get_tsf
,
2383 .set_tsf
= ath9k_set_tsf
,
2384 .reset_tsf
= ath9k_reset_tsf
,
2385 .ampdu_action
= ath9k_ampdu_action
,
2386 .get_survey
= ath9k_get_survey
,
2387 .rfkill_poll
= ath9k_rfkill_poll_state
,
2388 .set_coverage_class
= ath9k_set_coverage_class
,
2389 .flush
= ath9k_flush
,
2390 .tx_frames_pending
= ath9k_tx_frames_pending
,
2391 .tx_last_beacon
= ath9k_tx_last_beacon
,
2392 .get_stats
= ath9k_get_stats
,
2393 .set_antenna
= ath9k_set_antenna
,
2394 .get_antenna
= ath9k_get_antenna
,