summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/mediatek/mt76/mt7615/main.c
blob: beaca8127680827f81c4ee6f9179f30c088013c0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
// SPDX-License-Identifier: ISC
/* Copyright (C) 2019 MediaTek Inc.
 *
 * Author: Roy Luo <royluo@google.com>
 *         Ryder Lee <ryder.lee@mediatek.com>
 *         Felix Fietkau <nbd@nbd.name>
 *         Lorenzo Bianconi <lorenzo@kernel.org>
 */

#include <linux/etherdevice.h>
#include <linux/module.h>
#include "mt7615.h"
#include "mcu.h"

static bool mt7615_dev_running(struct mt7615_dev *dev)
{
	struct mt7615_phy *phy;

	if (test_bit(MT76_STATE_RUNNING, &dev->mphy.state))
		return true;

	phy = mt7615_ext_phy(dev);

	return phy && test_bit(MT76_STATE_RUNNING, &phy->mt76->state);
}

static int mt7615_start(struct ieee80211_hw *hw)
{
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	struct mt7615_phy *phy = mt7615_hw_phy(hw);
	bool running;

	if (!mt7615_wait_for_mcu_init(dev))
		return -EIO;

	mutex_lock(&dev->mt76.mutex);

	running = mt7615_dev_running(dev);

	if (!running) {
		mt7615_mcu_set_pm(dev, 0, 0);
		mt7615_mcu_set_mac_enable(dev, 0, true);
		mt7615_mac_enable_nf(dev, 0);
	}

	if (phy != &dev->phy) {
		mt7615_mcu_set_pm(dev, 1, 0);
		mt7615_mcu_set_mac_enable(dev, 1, true);
		mt7615_mac_enable_nf(dev, 1);
	}

	mt7615_mcu_set_channel_domain(phy);
	mt7615_mcu_set_chan_info(phy, MCU_EXT_CMD_SET_RX_PATH);

	set_bit(MT76_STATE_RUNNING, &phy->mt76->state);

	ieee80211_queue_delayed_work(hw, &phy->mac_work,
				     MT7615_WATCHDOG_TIME);

	if (!running)
		mt7615_mac_reset_counters(dev);

	mutex_unlock(&dev->mt76.mutex);

	return 0;
}

static void mt7615_stop(struct ieee80211_hw *hw)
{
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	struct mt7615_phy *phy = mt7615_hw_phy(hw);

	cancel_delayed_work_sync(&phy->mac_work);
	del_timer_sync(&phy->roc_timer);
	cancel_work_sync(&phy->roc_work);

	mutex_lock(&dev->mt76.mutex);

	clear_bit(MT76_STATE_RUNNING, &phy->mt76->state);
	cancel_delayed_work_sync(&phy->scan_work);

	if (phy != &dev->phy) {
		mt7615_mcu_set_pm(dev, 1, 1);
		mt7615_mcu_set_mac_enable(dev, 1, false);
	}

	if (!mt7615_dev_running(dev)) {
		mt7615_mcu_set_pm(dev, 0, 1);
		mt7615_mcu_set_mac_enable(dev, 0, false);
	}

	mutex_unlock(&dev->mt76.mutex);
}

static int get_omac_idx(enum nl80211_iftype type, u32 mask)
{
	int i;

	switch (type) {
	case NL80211_IFTYPE_MONITOR:
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_MESH_POINT:
	case NL80211_IFTYPE_ADHOC:
		/* ap use hw bssid 0 and ext bssid */
		if (~mask & BIT(HW_BSSID_0))
			return HW_BSSID_0;

		for (i = EXT_BSSID_1; i < EXT_BSSID_END; i++)
			if (~mask & BIT(i))
				return i;

		break;
	case NL80211_IFTYPE_STATION:
		/* sta use hw bssid other than 0 */
		for (i = HW_BSSID_1; i < HW_BSSID_MAX; i++)
			if (~mask & BIT(i))
				return i;

		break;
	default:
		WARN_ON(1);
		break;
	}

	return -1;
}

static int mt7615_add_interface(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif)
{
	struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	struct mt7615_phy *phy = mt7615_hw_phy(hw);
	struct mt76_txq *mtxq;
	bool ext_phy = phy != &dev->phy;
	int idx, ret = 0;

	mutex_lock(&dev->mt76.mutex);

	mvif->idx = ffs(~dev->vif_mask) - 1;
	if (mvif->idx >= MT7615_MAX_INTERFACES) {
		ret = -ENOSPC;
		goto out;
	}

	idx = get_omac_idx(vif->type, dev->omac_mask);
	if (idx < 0) {
		ret = -ENOSPC;
		goto out;
	}
	mvif->omac_idx = idx;

	mvif->band_idx = ext_phy;
	if (mt7615_ext_phy(dev))
		mvif->wmm_idx = ext_phy * (MT7615_MAX_WMM_SETS / 2) +
				mvif->idx % (MT7615_MAX_WMM_SETS / 2);
	else
		mvif->wmm_idx = mvif->idx % MT7615_MAX_WMM_SETS;

	dev->vif_mask |= BIT(mvif->idx);
	dev->omac_mask |= BIT(mvif->omac_idx);
	phy->omac_mask |= BIT(mvif->omac_idx);

	mt7615_mcu_set_dbdc(dev);

	idx = MT7615_WTBL_RESERVED - mvif->idx;

	INIT_LIST_HEAD(&mvif->sta.poll_list);
	mvif->sta.wcid.idx = idx;
	mvif->sta.wcid.ext_phy = mvif->band_idx;
	mvif->sta.wcid.hw_key_idx = -1;
	mt7615_mac_wtbl_update(dev, idx,
			       MT_WTBL_UPDATE_ADM_COUNT_CLEAR);

	rcu_assign_pointer(dev->mt76.wcid[idx], &mvif->sta.wcid);
	if (vif->txq) {
		mtxq = (struct mt76_txq *)vif->txq->drv_priv;
		mtxq->wcid = &mvif->sta.wcid;
		mt76_txq_init(&dev->mt76, vif->txq);
	}

	ret = mt7615_mcu_add_dev_info(dev, vif, true);
out:
	mutex_unlock(&dev->mt76.mutex);

	return ret;
}

static void mt7615_remove_interface(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif)
{
	struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
	struct mt7615_sta *msta = &mvif->sta;
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	struct mt7615_phy *phy = mt7615_hw_phy(hw);
	int idx = msta->wcid.idx;

	/* TODO: disable beacon for the bss */

	mt7615_mcu_add_dev_info(dev, vif, false);

	rcu_assign_pointer(dev->mt76.wcid[idx], NULL);
	if (vif->txq)
		mt76_txq_remove(&dev->mt76, vif->txq);

	mutex_lock(&dev->mt76.mutex);
	dev->vif_mask &= ~BIT(mvif->idx);
	dev->omac_mask &= ~BIT(mvif->omac_idx);
	phy->omac_mask &= ~BIT(mvif->omac_idx);
	mutex_unlock(&dev->mt76.mutex);

	spin_lock_bh(&dev->sta_poll_lock);
	if (!list_empty(&msta->poll_list))
		list_del_init(&msta->poll_list);
	spin_unlock_bh(&dev->sta_poll_lock);
}

static void mt7615_init_dfs_state(struct mt7615_phy *phy)
{
	struct mt76_phy *mphy = phy->mt76;
	struct ieee80211_hw *hw = mphy->hw;
	struct cfg80211_chan_def *chandef = &hw->conf.chandef;

	if (hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
		return;

	if (!(chandef->chan->flags & IEEE80211_CHAN_RADAR))
		return;

	if (mphy->chandef.chan->center_freq == chandef->chan->center_freq &&
	    mphy->chandef.width == chandef->width)
		return;

	phy->dfs_state = -1;
}

static int mt7615_set_channel(struct mt7615_phy *phy)
{
	struct mt7615_dev *dev = phy->dev;
	bool ext_phy = phy != &dev->phy;
	int ret;

	cancel_delayed_work_sync(&phy->mac_work);

	mutex_lock(&dev->mt76.mutex);
	set_bit(MT76_RESET, &phy->mt76->state);

	mt7615_init_dfs_state(phy);
	mt76_set_channel(phy->mt76);

	if (is_mt7615(&dev->mt76) && dev->flash_eeprom) {
		mt7615_mcu_apply_rx_dcoc(phy);
		mt7615_mcu_apply_tx_dpd(phy);
	}

	ret = mt7615_mcu_set_chan_info(phy, MCU_EXT_CMD_CHANNEL_SWITCH);
	if (ret)
		goto out;

	mt7615_mac_set_timing(phy);
	ret = mt7615_dfs_init_radar_detector(phy);
	mt7615_mac_cca_stats_reset(phy);
	mt7615_mcu_set_sku_en(phy, true);

	mt7615_mac_reset_counters(dev);
	phy->noise = 0;
	phy->chfreq = mt76_rr(dev, MT_CHFREQ(ext_phy));

out:
	clear_bit(MT76_RESET, &phy->mt76->state);
	mutex_unlock(&dev->mt76.mutex);

	mt76_txq_schedule_all(phy->mt76);
	ieee80211_queue_delayed_work(phy->mt76->hw, &phy->mac_work,
				     MT7615_WATCHDOG_TIME);
	return ret;
}

static int
mt7615_queue_key_update(struct mt7615_dev *dev, enum set_key_cmd cmd,
			struct mt7615_sta *msta,
			struct ieee80211_key_conf *key)
{
	struct mt7615_wtbl_desc *wd;

	wd = kzalloc(sizeof(*wd), GFP_KERNEL);
	if (!wd)
		return -ENOMEM;

	wd->type = MT7615_WTBL_KEY_DESC;
	wd->sta = msta;

	wd->key.key = kmemdup(key->key, key->keylen, GFP_KERNEL);
	if (!wd->key.key) {
		kfree(wd);
		return -ENOMEM;
	}
	wd->key.cipher = key->cipher;
	wd->key.keyidx = key->keyidx;
	wd->key.keylen = key->keylen;
	wd->key.cmd = cmd;

	list_add_tail(&wd->node, &dev->wd_head);
	queue_work(dev->mt76.usb.wq, &dev->wtbl_work);

	return 0;
}

static int mt7615_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
			  struct ieee80211_vif *vif, struct ieee80211_sta *sta,
			  struct ieee80211_key_conf *key)
{
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
	struct mt7615_sta *msta = sta ? (struct mt7615_sta *)sta->drv_priv :
				  &mvif->sta;
	struct mt76_wcid *wcid = &msta->wcid;
	int idx = key->keyidx;

	/* The hardware does not support per-STA RX GTK, fallback
	 * to software mode for these.
	 */
	if ((vif->type == NL80211_IFTYPE_ADHOC ||
	     vif->type == NL80211_IFTYPE_MESH_POINT) &&
	    (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
	     key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
	    !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
		return -EOPNOTSUPP;

	/* fall back to sw encryption for unsupported ciphers */
	switch (key->cipher) {
	case WLAN_CIPHER_SUITE_AES_CMAC:
		key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIE;
		break;
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
	case WLAN_CIPHER_SUITE_TKIP:
	case WLAN_CIPHER_SUITE_CCMP:
	case WLAN_CIPHER_SUITE_CCMP_256:
	case WLAN_CIPHER_SUITE_GCMP:
	case WLAN_CIPHER_SUITE_GCMP_256:
	case WLAN_CIPHER_SUITE_SMS4:
		break;
	default:
		return -EOPNOTSUPP;
	}

	if (cmd == SET_KEY) {
		key->hw_key_idx = wcid->idx;
		wcid->hw_key_idx = idx;
	} else if (idx == wcid->hw_key_idx) {
		wcid->hw_key_idx = -1;
	}
	mt76_wcid_key_setup(&dev->mt76, wcid,
			    cmd == SET_KEY ? key : NULL);

	if (mt76_is_usb(&dev->mt76))
		return mt7615_queue_key_update(dev, cmd, msta, key);

	return mt7615_mac_wtbl_set_key(dev, wcid, key, cmd);
}

static int mt7615_config(struct ieee80211_hw *hw, u32 changed)
{
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	struct mt7615_phy *phy = mt7615_hw_phy(hw);
	bool band = phy != &dev->phy;
	int ret = 0;

	if (changed & (IEEE80211_CONF_CHANGE_CHANNEL |
		       IEEE80211_CONF_CHANGE_POWER)) {
		ieee80211_stop_queues(hw);
		ret = mt7615_set_channel(phy);
		ieee80211_wake_queues(hw);
	}

	mutex_lock(&dev->mt76.mutex);

	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
		if (!(hw->conf.flags & IEEE80211_CONF_MONITOR))
			phy->rxfilter |= MT_WF_RFCR_DROP_OTHER_UC;
		else
			phy->rxfilter &= ~MT_WF_RFCR_DROP_OTHER_UC;

		mt76_wr(dev, MT_WF_RFCR(band), phy->rxfilter);
	}

	mutex_unlock(&dev->mt76.mutex);

	return ret;
}

static int
mt7615_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
	       const struct ieee80211_tx_queue_params *params)
{
	struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
	struct mt7615_dev *dev = mt7615_hw_dev(hw);

	queue = mt7615_lmac_mapping(dev, queue);
	queue += mvif->wmm_idx * MT7615_MAX_WMM_SETS;

	return mt7615_mcu_set_wmm(dev, queue, params);
}

static void mt7615_configure_filter(struct ieee80211_hw *hw,
				    unsigned int changed_flags,
				    unsigned int *total_flags,
				    u64 multicast)
{
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	struct mt7615_phy *phy = mt7615_hw_phy(hw);
	bool band = phy != &dev->phy;

	u32 ctl_flags = MT_WF_RFCR1_DROP_ACK |
			MT_WF_RFCR1_DROP_BF_POLL |
			MT_WF_RFCR1_DROP_BA |
			MT_WF_RFCR1_DROP_CFEND |
			MT_WF_RFCR1_DROP_CFACK;
	u32 flags = 0;

#define MT76_FILTER(_flag, _hw) do { \
		flags |= *total_flags & FIF_##_flag;			\
		phy->rxfilter &= ~(_hw);				\
		phy->rxfilter |= !(flags & FIF_##_flag) * (_hw);	\
	} while (0)

	phy->rxfilter &= ~(MT_WF_RFCR_DROP_OTHER_BSS |
			   MT_WF_RFCR_DROP_OTHER_BEACON |
			   MT_WF_RFCR_DROP_FRAME_REPORT |
			   MT_WF_RFCR_DROP_PROBEREQ |
			   MT_WF_RFCR_DROP_MCAST_FILTERED |
			   MT_WF_RFCR_DROP_MCAST |
			   MT_WF_RFCR_DROP_BCAST |
			   MT_WF_RFCR_DROP_DUPLICATE |
			   MT_WF_RFCR_DROP_A2_BSSID |
			   MT_WF_RFCR_DROP_UNWANTED_CTL |
			   MT_WF_RFCR_DROP_STBC_MULTI);

	MT76_FILTER(OTHER_BSS, MT_WF_RFCR_DROP_OTHER_TIM |
			       MT_WF_RFCR_DROP_A3_MAC |
			       MT_WF_RFCR_DROP_A3_BSSID);

	MT76_FILTER(FCSFAIL, MT_WF_RFCR_DROP_FCSFAIL);

	MT76_FILTER(CONTROL, MT_WF_RFCR_DROP_CTS |
			     MT_WF_RFCR_DROP_RTS |
			     MT_WF_RFCR_DROP_CTL_RSV |
			     MT_WF_RFCR_DROP_NDPA);

	*total_flags = flags;
	mt76_wr(dev, MT_WF_RFCR(band), phy->rxfilter);

	if (*total_flags & FIF_CONTROL)
		mt76_clear(dev, MT_WF_RFCR1(band), ctl_flags);
	else
		mt76_set(dev, MT_WF_RFCR1(band), ctl_flags);
}

static void mt7615_bss_info_changed(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif,
				    struct ieee80211_bss_conf *info,
				    u32 changed)
{
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	struct mt7615_phy *phy = mt7615_hw_phy(hw);

	mutex_lock(&dev->mt76.mutex);

	if (changed & BSS_CHANGED_ERP_SLOT) {
		int slottime = info->use_short_slot ? 9 : 20;

		if (slottime != phy->slottime) {
			phy->slottime = slottime;
			mt7615_mac_set_timing(phy);
		}
	}

	if (changed & BSS_CHANGED_BEACON_ENABLED) {
		mt7615_mcu_add_bss_info(phy, vif, NULL, info->enable_beacon);
		mt7615_mcu_sta_add(dev, vif, NULL, info->enable_beacon);

		if (vif->p2p && info->enable_beacon)
			mt7615_mcu_set_p2p_oppps(hw, vif);
	}

	if (changed & (BSS_CHANGED_BEACON |
		       BSS_CHANGED_BEACON_ENABLED))
		mt7615_mcu_add_beacon(dev, hw, vif, info->enable_beacon);

	if (changed & BSS_CHANGED_PS)
		mt7615_mcu_set_vif_ps(dev, vif);

	mutex_unlock(&dev->mt76.mutex);
}

static void
mt7615_channel_switch_beacon(struct ieee80211_hw *hw,
			     struct ieee80211_vif *vif,
			     struct cfg80211_chan_def *chandef)
{
	struct mt7615_dev *dev = mt7615_hw_dev(hw);

	mutex_lock(&dev->mt76.mutex);
	mt7615_mcu_add_beacon(dev, hw, vif, true);
	mutex_unlock(&dev->mt76.mutex);
}

int mt7615_mac_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
		       struct ieee80211_sta *sta)
{
	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
	struct mt7615_sta *msta = (struct mt7615_sta *)sta->drv_priv;
	struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
	int idx;

	idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7615_WTBL_STA - 1);
	if (idx < 0)
		return -ENOSPC;

	INIT_LIST_HEAD(&msta->poll_list);
	msta->vif = mvif;
	msta->wcid.sta = 1;
	msta->wcid.idx = idx;
	msta->wcid.ext_phy = mvif->band_idx;

	if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls) {
		struct mt7615_phy *phy;

		phy = mvif->band_idx ? mt7615_ext_phy(dev) : &dev->phy;
		mt7615_mcu_add_bss_info(phy, vif, sta, true);
	}
	mt7615_mac_wtbl_update(dev, idx,
			       MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
	mt7615_mcu_sta_add(dev, vif, sta, true);

	return 0;
}
EXPORT_SYMBOL_GPL(mt7615_mac_sta_add);

void mt7615_mac_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
			   struct ieee80211_sta *sta)
{
	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
	struct mt7615_sta *msta = (struct mt7615_sta *)sta->drv_priv;

	mt7615_mcu_sta_add(dev, vif, sta, false);
	mt7615_mac_wtbl_update(dev, msta->wcid.idx,
			       MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
	if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls) {
		struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
		struct mt7615_phy *phy;

		phy = mvif->band_idx ? mt7615_ext_phy(dev) : &dev->phy;
		mt7615_mcu_add_bss_info(phy, vif, sta, false);
	}

	spin_lock_bh(&dev->sta_poll_lock);
	if (!list_empty(&msta->poll_list))
		list_del_init(&msta->poll_list);
	spin_unlock_bh(&dev->sta_poll_lock);
}
EXPORT_SYMBOL_GPL(mt7615_mac_sta_remove);

static void mt7615_sta_rate_tbl_update(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif,
				       struct ieee80211_sta *sta)
{
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	struct mt7615_phy *phy = mt7615_hw_phy(hw);
	struct mt7615_sta *msta = (struct mt7615_sta *)sta->drv_priv;
	struct ieee80211_sta_rates *sta_rates = rcu_dereference(sta->rates);
	int i;

	spin_lock_bh(&dev->mt76.lock);
	for (i = 0; i < ARRAY_SIZE(msta->rates); i++) {
		msta->rates[i].idx = sta_rates->rate[i].idx;
		msta->rates[i].count = sta_rates->rate[i].count;
		msta->rates[i].flags = sta_rates->rate[i].flags;

		if (msta->rates[i].idx < 0 || !msta->rates[i].count)
			break;
	}
	msta->n_rates = i;
	mt7615_mac_set_rates(phy, msta, NULL, msta->rates);
	msta->rate_probe = false;
	spin_unlock_bh(&dev->mt76.lock);
}

static void mt7615_tx(struct ieee80211_hw *hw,
		      struct ieee80211_tx_control *control,
		      struct sk_buff *skb)
{
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	struct mt76_phy *mphy = hw->priv;
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	struct ieee80211_vif *vif = info->control.vif;
	struct mt76_wcid *wcid = &dev->mt76.global_wcid;

	if (control->sta) {
		struct mt7615_sta *sta;

		sta = (struct mt7615_sta *)control->sta->drv_priv;
		wcid = &sta->wcid;
	}

	if (vif && !control->sta) {
		struct mt7615_vif *mvif;

		mvif = (struct mt7615_vif *)vif->drv_priv;
		wcid = &mvif->sta.wcid;
	}

	mt76_tx(mphy, control->sta, wcid, skb);
}

static int mt7615_set_rts_threshold(struct ieee80211_hw *hw, u32 val)
{
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	struct mt7615_phy *phy = mt7615_hw_phy(hw);

	mutex_lock(&dev->mt76.mutex);
	mt7615_mcu_set_rts_thresh(phy, val);
	mutex_unlock(&dev->mt76.mutex);

	return 0;
}

static int
mt7615_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
		    struct ieee80211_ampdu_params *params)
{
	enum ieee80211_ampdu_mlme_action action = params->action;
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	struct ieee80211_sta *sta = params->sta;
	struct ieee80211_txq *txq = sta->txq[params->tid];
	struct mt7615_sta *msta = (struct mt7615_sta *)sta->drv_priv;
	u16 tid = params->tid;
	u16 ssn = params->ssn;
	struct mt76_txq *mtxq;
	int ret = 0;

	if (!txq)
		return -EINVAL;

	mtxq = (struct mt76_txq *)txq->drv_priv;

	mutex_lock(&dev->mt76.mutex);
	switch (action) {
	case IEEE80211_AMPDU_RX_START:
		mt76_rx_aggr_start(&dev->mt76, &msta->wcid, tid, ssn,
				   params->buf_size);
		mt7615_mcu_add_rx_ba(dev, params, true);
		break;
	case IEEE80211_AMPDU_RX_STOP:
		mt76_rx_aggr_stop(&dev->mt76, &msta->wcid, tid);
		mt7615_mcu_add_rx_ba(dev, params, false);
		break;
	case IEEE80211_AMPDU_TX_OPERATIONAL:
		mtxq->aggr = true;
		mtxq->send_bar = false;
		mt7615_mcu_add_tx_ba(dev, params, true);
		break;
	case IEEE80211_AMPDU_TX_STOP_FLUSH:
	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
		mtxq->aggr = false;
		mt7615_mcu_add_tx_ba(dev, params, false);
		break;
	case IEEE80211_AMPDU_TX_START:
		mtxq->agg_ssn = IEEE80211_SN_TO_SEQ(ssn);
		ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
		break;
	case IEEE80211_AMPDU_TX_STOP_CONT:
		mtxq->aggr = false;
		mt7615_mcu_add_tx_ba(dev, params, false);
		ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
		break;
	}
	mutex_unlock(&dev->mt76.mutex);

	return ret;
}

static int
mt7615_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
	       struct ieee80211_sta *sta)
{
    return mt76_sta_state(hw, vif, sta, IEEE80211_STA_NOTEXIST,
			  IEEE80211_STA_NONE);
}

static int
mt7615_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
		  struct ieee80211_sta *sta)
{
    return mt76_sta_state(hw, vif, sta, IEEE80211_STA_NONE,
			  IEEE80211_STA_NOTEXIST);
}

static int
mt7615_get_stats(struct ieee80211_hw *hw,
		 struct ieee80211_low_level_stats *stats)
{
	struct mt7615_phy *phy = mt7615_hw_phy(hw);
	struct mib_stats *mib = &phy->mib;

	stats->dot11RTSSuccessCount = mib->rts_cnt;
	stats->dot11RTSFailureCount = mib->rts_retries_cnt;
	stats->dot11FCSErrorCount = mib->fcs_err_cnt;
	stats->dot11ACKFailureCount = mib->ack_fail_cnt;

	return 0;
}

static u64
mt7615_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	union {
		u64 t64;
		u32 t32[2];
	} tsf;

	mutex_lock(&dev->mt76.mutex);

	mt76_set(dev, MT_LPON_T0CR, MT_LPON_T0CR_MODE); /* TSF read */
	tsf.t32[0] = mt76_rr(dev, MT_LPON_UTTR0);
	tsf.t32[1] = mt76_rr(dev, MT_LPON_UTTR1);

	mutex_unlock(&dev->mt76.mutex);

	return tsf.t64;
}

static void
mt7615_set_coverage_class(struct ieee80211_hw *hw, s16 coverage_class)
{
	struct mt7615_phy *phy = mt7615_hw_phy(hw);
	struct mt7615_dev *dev = phy->dev;

	mutex_lock(&dev->mt76.mutex);
	phy->coverage_class = max_t(s16, coverage_class, 0);
	mt7615_mac_set_timing(phy);
	mutex_unlock(&dev->mt76.mutex);
}

static int
mt7615_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
{
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	struct mt7615_phy *phy = mt7615_hw_phy(hw);
	int max_nss = hweight8(hw->wiphy->available_antennas_tx);
	bool ext_phy = phy != &dev->phy;

	if (!tx_ant || tx_ant != rx_ant || ffs(tx_ant) > max_nss)
		return -EINVAL;

	if ((BIT(hweight8(tx_ant)) - 1) != tx_ant)
		tx_ant = BIT(ffs(tx_ant) - 1) - 1;

	mutex_lock(&dev->mt76.mutex);

	phy->mt76->antenna_mask = tx_ant;
	if (ext_phy) {
		if (dev->chainmask == 0xf)
			tx_ant <<= 2;
		else
			tx_ant <<= 1;
	}
	phy->chainmask = tx_ant;

	mt76_set_stream_caps(phy->mt76, true);

	mutex_unlock(&dev->mt76.mutex);

	return 0;
}

static void mt7615_roc_iter(void *priv, u8 *mac,
			    struct ieee80211_vif *vif)
{
	struct mt7615_phy *phy = priv;

	mt7615_mcu_set_roc(phy, vif, NULL, 0);
}

void mt7615_roc_work(struct work_struct *work)
{
	struct mt7615_phy *phy;

	phy = (struct mt7615_phy *)container_of(work, struct mt7615_phy,
						roc_work);

	if (!test_and_clear_bit(MT76_STATE_ROC, &phy->mt76->state))
		return;

	ieee80211_iterate_active_interfaces(phy->mt76->hw,
					    IEEE80211_IFACE_ITER_RESUME_ALL,
					    mt7615_roc_iter, phy);
	ieee80211_remain_on_channel_expired(phy->mt76->hw);
}

void mt7615_roc_timer(struct timer_list *timer)
{
	struct mt7615_phy *phy = from_timer(phy, timer, roc_timer);

	ieee80211_queue_work(phy->mt76->hw, &phy->roc_work);
}

void mt7615_scan_work(struct work_struct *work)
{
	struct mt7615_phy *phy;

	phy = (struct mt7615_phy *)container_of(work, struct mt7615_phy,
						scan_work.work);

	while (true) {
		struct mt7615_mcu_rxd *rxd;
		struct sk_buff *skb;

		spin_lock_bh(&phy->dev->mt76.lock);
		skb = __skb_dequeue(&phy->scan_event_list);
		spin_unlock_bh(&phy->dev->mt76.lock);

		if (!skb)
			break;

		rxd = (struct mt7615_mcu_rxd *)skb->data;
		if (rxd->eid == MCU_EVENT_SCHED_SCAN_DONE) {
			ieee80211_sched_scan_results(phy->mt76->hw);
		} else if (test_and_clear_bit(MT76_HW_SCANNING,
					      &phy->mt76->state)) {
			struct cfg80211_scan_info info = {
				.aborted = false,
			};

			ieee80211_scan_completed(phy->mt76->hw, &info);
		}
		dev_kfree_skb(skb);
	}
}

static int
mt7615_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
	       struct ieee80211_scan_request *req)
{
	struct mt76_phy *mphy = hw->priv;

	return mt7615_mcu_hw_scan(mphy->priv, vif, req);
}

static void
mt7615_cancel_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
	struct mt76_phy *mphy = hw->priv;

	mt7615_mcu_cancel_hw_scan(mphy->priv, vif);
}

static int
mt7615_start_sched_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			struct cfg80211_sched_scan_request *req,
			struct ieee80211_scan_ies *ies)
{
	struct mt76_phy *mphy = hw->priv;
	int err;

	err = mt7615_mcu_sched_scan_req(mphy->priv, vif, req);
	if (err < 0)
		return err;

	return mt7615_mcu_sched_scan_enable(mphy->priv, vif, true);
}

static int
mt7615_stop_sched_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
	struct mt76_phy *mphy = hw->priv;

	return mt7615_mcu_sched_scan_enable(mphy->priv, vif, false);
}

static int mt7615_remain_on_channel(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif,
				    struct ieee80211_channel *chan,
				    int duration,
				    enum ieee80211_roc_type type)
{
	struct mt7615_phy *phy = mt7615_hw_phy(hw);
	int err;

	if (test_and_set_bit(MT76_STATE_ROC, &phy->mt76->state))
		return 0;

	err = mt7615_mcu_set_roc(phy, vif, chan, duration);
	if (err < 0) {
		clear_bit(MT76_STATE_ROC, &phy->mt76->state);
		return err;
	}

	if (!wait_event_timeout(phy->roc_wait, phy->roc_grant, HZ)) {
		mt7615_mcu_set_roc(phy, vif, NULL, 0);
		clear_bit(MT76_STATE_ROC, &phy->mt76->state);

		return -ETIMEDOUT;
	}

	return 0;
}

static int mt7615_cancel_remain_on_channel(struct ieee80211_hw *hw,
					   struct ieee80211_vif *vif)
{
	struct mt7615_phy *phy = mt7615_hw_phy(hw);

	if (!test_and_clear_bit(MT76_STATE_ROC, &phy->mt76->state))
		return 0;

	del_timer_sync(&phy->roc_timer);
	cancel_work_sync(&phy->roc_work);

	mt7615_mcu_set_roc(phy, vif, NULL, 0);

	return 0;
}

#ifdef CONFIG_PM
static int mt7615_suspend(struct ieee80211_hw *hw,
			  struct cfg80211_wowlan *wowlan)
{
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	struct mt7615_phy *phy = mt7615_hw_phy(hw);
	bool ext_phy = phy != &dev->phy;
	int err = 0;

	mutex_lock(&dev->mt76.mutex);

	clear_bit(MT76_STATE_RUNNING, &phy->mt76->state);
	cancel_delayed_work_sync(&phy->scan_work);
	cancel_delayed_work_sync(&phy->mac_work);

	mt76_set(dev, MT_WF_RFCR(ext_phy), MT_WF_RFCR_DROP_OTHER_BEACON);

	set_bit(MT76_STATE_SUSPEND, &phy->mt76->state);
	ieee80211_iterate_active_interfaces(hw,
					    IEEE80211_IFACE_ITER_RESUME_ALL,
					    mt7615_mcu_set_suspend_iter, phy);

	if (!mt7615_dev_running(dev))
		err = mt7615_mcu_set_hif_suspend(dev, true);

	mutex_unlock(&dev->mt76.mutex);

	return err;
}

static int mt7615_resume(struct ieee80211_hw *hw)
{
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	struct mt7615_phy *phy = mt7615_hw_phy(hw);
	bool running, ext_phy = phy != &dev->phy;

	mutex_lock(&dev->mt76.mutex);

	running = mt7615_dev_running(dev);
	set_bit(MT76_STATE_RUNNING, &phy->mt76->state);

	if (!running) {
		int err;

		err = mt7615_mcu_set_hif_suspend(dev, false);
		if (err < 0) {
			mutex_unlock(&dev->mt76.mutex);
			return err;
		}
	}

	clear_bit(MT76_STATE_SUSPEND, &phy->mt76->state);
	ieee80211_iterate_active_interfaces(hw,
					    IEEE80211_IFACE_ITER_RESUME_ALL,
					    mt7615_mcu_set_suspend_iter, phy);

	ieee80211_queue_delayed_work(hw, &phy->mac_work,
				     MT7615_WATCHDOG_TIME);
	mt76_clear(dev, MT_WF_RFCR(ext_phy), MT_WF_RFCR_DROP_OTHER_BEACON);

	mutex_unlock(&dev->mt76.mutex);

	return 0;
}

static void mt7615_set_wakeup(struct ieee80211_hw *hw, bool enabled)
{
	struct mt7615_dev *dev = mt7615_hw_dev(hw);
	struct mt76_dev *mdev = &dev->mt76;

	device_set_wakeup_enable(mdev->dev, enabled);
}

static void mt7615_set_rekey_data(struct ieee80211_hw *hw,
				  struct ieee80211_vif *vif,
				  struct cfg80211_gtk_rekey_data *data)
{
	mt7615_mcu_update_gtk_rekey(hw, vif, data);
}
#endif /* CONFIG_PM */

const struct ieee80211_ops mt7615_ops = {
	.tx = mt7615_tx,
	.start = mt7615_start,
	.stop = mt7615_stop,
	.add_interface = mt7615_add_interface,
	.remove_interface = mt7615_remove_interface,
	.config = mt7615_config,
	.conf_tx = mt7615_conf_tx,
	.configure_filter = mt7615_configure_filter,
	.bss_info_changed = mt7615_bss_info_changed,
	.sta_add = mt7615_sta_add,
	.sta_remove = mt7615_sta_remove,
	.sta_pre_rcu_remove = mt76_sta_pre_rcu_remove,
	.set_key = mt7615_set_key,
	.ampdu_action = mt7615_ampdu_action,
	.set_rts_threshold = mt7615_set_rts_threshold,
	.wake_tx_queue = mt76_wake_tx_queue,
	.sta_rate_tbl_update = mt7615_sta_rate_tbl_update,
	.sw_scan_start = mt76_sw_scan,
	.sw_scan_complete = mt76_sw_scan_complete,
	.release_buffered_frames = mt76_release_buffered_frames,
	.get_txpower = mt76_get_txpower,
	.channel_switch_beacon = mt7615_channel_switch_beacon,
	.get_stats = mt7615_get_stats,
	.get_tsf = mt7615_get_tsf,
	.get_survey = mt76_get_survey,
	.get_antenna = mt76_get_antenna,
	.set_antenna = mt7615_set_antenna,
	.set_coverage_class = mt7615_set_coverage_class,
	.hw_scan = mt7615_hw_scan,
	.cancel_hw_scan = mt7615_cancel_hw_scan,
	.sched_scan_start = mt7615_start_sched_scan,
	.sched_scan_stop = mt7615_stop_sched_scan,
	.remain_on_channel = mt7615_remain_on_channel,
	.cancel_remain_on_channel = mt7615_cancel_remain_on_channel,
#ifdef CONFIG_PM
	.suspend = mt7615_suspend,
	.resume = mt7615_resume,
	.set_wakeup = mt7615_set_wakeup,
	.set_rekey_data = mt7615_set_rekey_data,
#endif /* CONFIG_PM */
};
EXPORT_SYMBOL_GPL(mt7615_ops);

MODULE_LICENSE("Dual BSD/GPL");