summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/intel/iwlwifi/mvm/coex.c
blob: 5a5b1128e75ca36f327d2b040f77dafddc64adeb (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
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
 * Copyright (C) 2013-2014, 2018-2020, 2022 Intel Corporation
 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
 */
#include <linux/ieee80211.h>
#include <linux/etherdevice.h>
#include <net/mac80211.h>

#include "fw/api/coex.h"
#include "iwl-modparams.h"
#include "mvm.h"
#include "iwl-debug.h"

/* 20MHz / 40MHz below / 40Mhz above*/
static const __le64 iwl_ci_mask[][3] = {
	/* dummy entry for channel 0 */
	{cpu_to_le64(0), cpu_to_le64(0), cpu_to_le64(0)},
	{
		cpu_to_le64(0x0000001FFFULL),
		cpu_to_le64(0x0ULL),
		cpu_to_le64(0x00007FFFFFULL),
	},
	{
		cpu_to_le64(0x000000FFFFULL),
		cpu_to_le64(0x0ULL),
		cpu_to_le64(0x0003FFFFFFULL),
	},
	{
		cpu_to_le64(0x000003FFFCULL),
		cpu_to_le64(0x0ULL),
		cpu_to_le64(0x000FFFFFFCULL),
	},
	{
		cpu_to_le64(0x00001FFFE0ULL),
		cpu_to_le64(0x0ULL),
		cpu_to_le64(0x007FFFFFE0ULL),
	},
	{
		cpu_to_le64(0x00007FFF80ULL),
		cpu_to_le64(0x00007FFFFFULL),
		cpu_to_le64(0x01FFFFFF80ULL),
	},
	{
		cpu_to_le64(0x0003FFFC00ULL),
		cpu_to_le64(0x0003FFFFFFULL),
		cpu_to_le64(0x0FFFFFFC00ULL),
	},
	{
		cpu_to_le64(0x000FFFF000ULL),
		cpu_to_le64(0x000FFFFFFCULL),
		cpu_to_le64(0x3FFFFFF000ULL),
	},
	{
		cpu_to_le64(0x007FFF8000ULL),
		cpu_to_le64(0x007FFFFFE0ULL),
		cpu_to_le64(0xFFFFFF8000ULL),
	},
	{
		cpu_to_le64(0x01FFFE0000ULL),
		cpu_to_le64(0x01FFFFFF80ULL),
		cpu_to_le64(0xFFFFFE0000ULL),
	},
	{
		cpu_to_le64(0x0FFFF00000ULL),
		cpu_to_le64(0x0FFFFFFC00ULL),
		cpu_to_le64(0x0ULL),
	},
	{
		cpu_to_le64(0x3FFFC00000ULL),
		cpu_to_le64(0x3FFFFFF000ULL),
		cpu_to_le64(0x0)
	},
	{
		cpu_to_le64(0xFFFE000000ULL),
		cpu_to_le64(0xFFFFFF8000ULL),
		cpu_to_le64(0x0)
	},
	{
		cpu_to_le64(0xFFF8000000ULL),
		cpu_to_le64(0xFFFFFE0000ULL),
		cpu_to_le64(0x0)
	},
	{
		cpu_to_le64(0xFE00000000ULL),
		cpu_to_le64(0x0ULL),
		cpu_to_le64(0x0ULL)
	},
};

static enum iwl_bt_coex_lut_type
iwl_get_coex_type(struct iwl_mvm *mvm, const struct ieee80211_vif *vif)
{
	struct ieee80211_chanctx_conf *chanctx_conf;
	enum iwl_bt_coex_lut_type ret;
	u16 phy_ctx_id;
	u32 primary_ch_phy_id, secondary_ch_phy_id;

	/*
	 * Checking that we hold mvm->mutex is a good idea, but the rate
	 * control can't acquire the mutex since it runs in Tx path.
	 * So this is racy in that case, but in the worst case, the AMPDU
	 * size limit will be wrong for a short time which is not a big
	 * issue.
	 */

	rcu_read_lock();

	chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);

	if (!chanctx_conf ||
	     chanctx_conf->def.chan->band != NL80211_BAND_2GHZ) {
		rcu_read_unlock();
		return BT_COEX_INVALID_LUT;
	}

	ret = BT_COEX_TX_DIS_LUT;

	if (mvm->cfg->bt_shared_single_ant) {
		rcu_read_unlock();
		return ret;
	}

	phy_ctx_id = *((u16 *)chanctx_conf->drv_priv);
	primary_ch_phy_id = le32_to_cpu(mvm->last_bt_ci_cmd.primary_ch_phy_id);
	secondary_ch_phy_id =
		le32_to_cpu(mvm->last_bt_ci_cmd.secondary_ch_phy_id);

	if (primary_ch_phy_id == phy_ctx_id)
		ret = le32_to_cpu(mvm->last_bt_notif.primary_ch_lut);
	else if (secondary_ch_phy_id == phy_ctx_id)
		ret = le32_to_cpu(mvm->last_bt_notif.secondary_ch_lut);
	/* else - default = TX TX disallowed */

	rcu_read_unlock();

	return ret;
}

int iwl_mvm_send_bt_init_conf(struct iwl_mvm *mvm)
{
	struct iwl_bt_coex_cmd bt_cmd = {};
	u32 mode;

	lockdep_assert_held(&mvm->mutex);

	if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) {
		switch (mvm->bt_force_ant_mode) {
		case BT_FORCE_ANT_BT:
			mode = BT_COEX_BT;
			break;
		case BT_FORCE_ANT_WIFI:
			mode = BT_COEX_WIFI;
			break;
		default:
			WARN_ON(1);
			mode = 0;
		}

		bt_cmd.mode = cpu_to_le32(mode);
		goto send_cmd;
	}

	bt_cmd.mode = cpu_to_le32(BT_COEX_NW);

	if (IWL_MVM_BT_COEX_SYNC2SCO)
		bt_cmd.enabled_modules |=
			cpu_to_le32(BT_COEX_SYNC2SCO_ENABLED);

	if (iwl_mvm_is_mplut_supported(mvm))
		bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_MPLUT_ENABLED);

	bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_HIGH_BAND_RET);

send_cmd:
	memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
	memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));

	return iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, 0, sizeof(bt_cmd), &bt_cmd);
}

static int iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm *mvm, u8 sta_id,
				       bool enable)
{
	struct iwl_bt_coex_reduced_txp_update_cmd cmd = {};
	struct iwl_mvm_sta *mvmsta;
	u32 value;

	mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
	if (!mvmsta)
		return 0;

	/* nothing to do */
	if (mvmsta->bt_reduced_txpower == enable)
		return 0;

	value = mvmsta->deflink.sta_id;

	if (enable)
		value |= BT_REDUCED_TX_POWER_BIT;

	IWL_DEBUG_COEX(mvm, "%sable reduced Tx Power for sta %d\n",
		       enable ? "en" : "dis", sta_id);

	cmd.reduced_txp = cpu_to_le32(value);
	mvmsta->bt_reduced_txpower = enable;

	return iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_REDUCED_TXP,
				    CMD_ASYNC, sizeof(cmd), &cmd);
}

struct iwl_bt_iterator_data {
	struct iwl_bt_coex_profile_notif *notif;
	struct iwl_mvm *mvm;
	struct ieee80211_chanctx_conf *primary;
	struct ieee80211_chanctx_conf *secondary;
	bool primary_ll;
	u8 primary_load;
	u8 secondary_load;
};

static inline
void iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm *mvm,
				       struct ieee80211_vif *vif,
				       bool enable, int rssi)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

	mvmvif->bf_data.last_bt_coex_event = rssi;
	mvmvif->bf_data.bt_coex_max_thold =
		enable ? -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH : 0;
	mvmvif->bf_data.bt_coex_min_thold =
		enable ? -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH : 0;
}

#define MVM_COEX_TCM_PERIOD (HZ * 10)

static void iwl_mvm_bt_coex_tcm_based_ci(struct iwl_mvm *mvm,
					 struct iwl_bt_iterator_data *data)
{
	unsigned long now = jiffies;

	if (!time_after(now, mvm->bt_coex_last_tcm_ts + MVM_COEX_TCM_PERIOD))
		return;

	mvm->bt_coex_last_tcm_ts = now;

	/* We assume here that we don't have more than 2 vifs on 2.4GHz */

	/* if the primary is low latency, it will stay primary */
	if (data->primary_ll)
		return;

	if (data->primary_load >= data->secondary_load)
		return;

	swap(data->primary, data->secondary);
}

static void iwl_mvm_bt_notif_per_link(struct iwl_mvm *mvm,
				      struct ieee80211_vif *vif,
				      struct iwl_bt_iterator_data *data,
				      unsigned int link_id)
{
	/* default smps_mode is AUTOMATIC - only used for client modes */
	enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	u32 bt_activity_grading, min_ag_for_static_smps;
	struct ieee80211_chanctx_conf *chanctx_conf;
	struct iwl_mvm_vif_link_info *link_info;
	struct ieee80211_bss_conf *link_conf;
	int ave_rssi;

	lockdep_assert_held(&mvm->mutex);

	link_info = mvmvif->link[link_id];
	if (!link_info)
		return;

	link_conf = rcu_dereference(vif->link_conf[link_id]);
	/* This can happen due to races: if we receive the notification
	 * and have the mutex held, while mac80211 is stuck on our mutex
	 * in the middle of removing the link.
	 */
	if (!link_conf)
		return;

	chanctx_conf = rcu_dereference(link_conf->chanctx_conf);

	/* If channel context is invalid or not on 2.4GHz .. */
	if ((!chanctx_conf ||
	     chanctx_conf->def.chan->band != NL80211_BAND_2GHZ)) {
		if (vif->type == NL80211_IFTYPE_STATION) {
			/* ... relax constraints and disable rssi events */
			iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
					    smps_mode, link_id);
			iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id,
						    false);
			/* FIXME: should this be per link? */
			iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
		}
		return;
	}

	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2))
		min_ag_for_static_smps = BT_VERY_HIGH_TRAFFIC;
	else
		min_ag_for_static_smps = BT_HIGH_TRAFFIC;

	bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading);
	if (bt_activity_grading >= min_ag_for_static_smps)
		smps_mode = IEEE80211_SMPS_STATIC;
	else if (bt_activity_grading >= BT_LOW_TRAFFIC)
		smps_mode = IEEE80211_SMPS_DYNAMIC;

	/* relax SMPS constraints for next association */
	if (!vif->cfg.assoc)
		smps_mode = IEEE80211_SMPS_AUTOMATIC;

	if (link_info->phy_ctxt &&
	    (mvm->last_bt_notif.rrc_status & BIT(link_info->phy_ctxt->id)))
		smps_mode = IEEE80211_SMPS_AUTOMATIC;

	IWL_DEBUG_COEX(data->mvm,
		       "mac %d link %d: bt_activity_grading %d smps_req %d\n",
		       mvmvif->id, link_info->fw_link_id,
		       bt_activity_grading, smps_mode);

	if (vif->type == NL80211_IFTYPE_STATION)
		iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
				    smps_mode, link_id);

	/* low latency is always primary */
	if (iwl_mvm_vif_low_latency(mvmvif)) {
		data->primary_ll = true;

		data->secondary = data->primary;
		data->primary = chanctx_conf;
	}

	if (vif->type == NL80211_IFTYPE_AP) {
		if (!mvmvif->ap_ibss_active)
			return;

		if (chanctx_conf == data->primary)
			return;

		if (!data->primary_ll) {
			/*
			 * downgrade the current primary no matter what its
			 * type is.
			 */
			data->secondary = data->primary;
			data->primary = chanctx_conf;
		} else {
			/* there is low latency vif - we will be secondary */
			data->secondary = chanctx_conf;
		}

		/* FIXME: TCM load per interface? or need something per link? */
		if (data->primary == chanctx_conf)
			data->primary_load = mvm->tcm.result.load[mvmvif->id];
		else if (data->secondary == chanctx_conf)
			data->secondary_load = mvm->tcm.result.load[mvmvif->id];
		return;
	}

	/*
	 * STA / P2P Client, try to be primary if first vif. If we are in low
	 * latency mode, we are already in primary and just don't do much
	 */
	if (!data->primary || data->primary == chanctx_conf)
		data->primary = chanctx_conf;
	else if (!data->secondary)
		/* if secondary is not NULL, it might be a GO */
		data->secondary = chanctx_conf;

	/* FIXME: TCM load per interface? or need something per link? */
	if (data->primary == chanctx_conf)
		data->primary_load = mvm->tcm.result.load[mvmvif->id];
	else if (data->secondary == chanctx_conf)
		data->secondary_load = mvm->tcm.result.load[mvmvif->id];
	/*
	 * don't reduce the Tx power if one of these is true:
	 *  we are in LOOSE
	 *  single share antenna product
	 *  BT is inactive
	 *  we are not associated
	 */
	if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT ||
	    mvm->cfg->bt_shared_single_ant || !vif->cfg.assoc ||
	    le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) {
		iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, false);
		/* FIXME: should this be per link? */
		iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
		return;
	}

	/* try to get the avg rssi from fw */
	ave_rssi = mvmvif->bf_data.ave_beacon_signal;

	/* if the RSSI isn't valid, fake it is very low */
	if (!ave_rssi)
		ave_rssi = -100;
	if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) {
		if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id,
						true))
			IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
	} else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) {
		if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id,
						false))
			IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
	}

	/* Begin to monitor the RSSI: it may influence the reduced Tx power */
	iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi);
}

/* must be called under rcu_read_lock */
static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac,
				      struct ieee80211_vif *vif)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_bt_iterator_data *data = _data;
	struct iwl_mvm *mvm = data->mvm;
	unsigned int link_id;

	lockdep_assert_held(&mvm->mutex);

	switch (vif->type) {
	case NL80211_IFTYPE_STATION:
		break;
	case NL80211_IFTYPE_AP:
		if (!mvmvif->ap_ibss_active)
			return;
		break;
	default:
		return;
	}

	for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++)
		iwl_mvm_bt_notif_per_link(mvm, vif, data, link_id);
}

static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm)
{
	struct iwl_bt_iterator_data data = {
		.mvm = mvm,
		.notif = &mvm->last_bt_notif,
	};
	struct iwl_bt_coex_ci_cmd cmd = {};
	u8 ci_bw_idx;

	/* Ignore updates if we are in force mode */
	if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
		return;

	rcu_read_lock();
	ieee80211_iterate_active_interfaces_atomic(
					mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
					iwl_mvm_bt_notif_iterator, &data);

	iwl_mvm_bt_coex_tcm_based_ci(mvm, &data);

	if (data.primary) {
		struct ieee80211_chanctx_conf *chan = data.primary;
		if (WARN_ON(!chan->def.chan)) {
			rcu_read_unlock();
			return;
		}

		if (chan->def.width < NL80211_CHAN_WIDTH_40) {
			ci_bw_idx = 0;
		} else {
			if (chan->def.center_freq1 >
			    chan->def.chan->center_freq)
				ci_bw_idx = 2;
			else
				ci_bw_idx = 1;
		}

		cmd.bt_primary_ci =
			iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
		cmd.primary_ch_phy_id =
			cpu_to_le32(*((u16 *)data.primary->drv_priv));
	}

	if (data.secondary) {
		struct ieee80211_chanctx_conf *chan = data.secondary;
		if (WARN_ON(!data.secondary->def.chan)) {
			rcu_read_unlock();
			return;
		}

		if (chan->def.width < NL80211_CHAN_WIDTH_40) {
			ci_bw_idx = 0;
		} else {
			if (chan->def.center_freq1 >
			    chan->def.chan->center_freq)
				ci_bw_idx = 2;
			else
				ci_bw_idx = 1;
		}

		cmd.bt_secondary_ci =
			iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
		cmd.secondary_ch_phy_id =
			cpu_to_le32(*((u16 *)data.secondary->drv_priv));
	}

	rcu_read_unlock();

	/* Don't spam the fw with the same command over and over */
	if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) {
		if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0,
					 sizeof(cmd), &cmd))
			IWL_ERR(mvm, "Failed to send BT_CI cmd\n");
		memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd));
	}
}

void iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm,
			      struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data;

	IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n");
	IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance);
	IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n",
		       le32_to_cpu(notif->primary_ch_lut));
	IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n",
		       le32_to_cpu(notif->secondary_ch_lut));
	IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n",
		       le32_to_cpu(notif->bt_activity_grading));

	/* remember this notification for future use: rssi fluctuations */
	memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif));

	iwl_mvm_bt_coex_notif_handle(mvm);
}

void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
			   enum ieee80211_rssi_event_data rssi_event)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	int ret;

	lockdep_assert_held(&mvm->mutex);

	/* Ignore updates if we are in force mode */
	if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
		return;

	/*
	 * Rssi update while not associated - can happen since the statistics
	 * are handled asynchronously
	 */
	if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA)
		return;

	/* No BT - reports should be disabled */
	if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF)
		return;

	IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid,
		       rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW");

	/*
	 * Check if rssi is good enough for reduced Tx power, but not in loose
	 * scheme.
	 */
	if (rssi_event == RSSI_EVENT_LOW || mvm->cfg->bt_shared_single_ant ||
	    iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT)
		ret = iwl_mvm_bt_coex_reduced_txp(mvm,
						  mvmvif->deflink.ap_sta_id,
						  false);
	else
		ret = iwl_mvm_bt_coex_reduced_txp(mvm,
						  mvmvif->deflink.ap_sta_id,
						  true);

	if (ret)
		IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n");
}

#define LINK_QUAL_AGG_TIME_LIMIT_DEF	(4000)
#define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT	(1200)

u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm,
				struct ieee80211_sta *sta)
{
	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
	struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt;
	enum iwl_bt_coex_lut_type lut_type;

	if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id))
		return LINK_QUAL_AGG_TIME_LIMIT_DEF;

	if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
	    BT_HIGH_TRAFFIC)
		return LINK_QUAL_AGG_TIME_LIMIT_DEF;

	lut_type = iwl_get_coex_type(mvm, mvmsta->vif);

	if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT)
		return LINK_QUAL_AGG_TIME_LIMIT_DEF;

	/* tight coex, high bt traffic, reduce AGG time limit */
	return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT;
}

bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm,
				     struct ieee80211_sta *sta)
{
	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
	struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt;
	enum iwl_bt_coex_lut_type lut_type;

	if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id))
		return true;

	if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
	    BT_HIGH_TRAFFIC)
		return true;

	/*
	 * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas
	 * since BT is already killed.
	 * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while
	 * we Tx.
	 * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO.
	 */
	lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
	return lut_type != BT_COEX_LOOSE_LUT;
}

bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant)
{
	/* there is no other antenna, shared antenna is always available */
	if (mvm->cfg->bt_shared_single_ant)
		return true;

	if (ant & mvm->cfg->non_shared_ant)
		return true;

	return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
		BT_HIGH_TRAFFIC;
}

bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm)
{
	/* there is no other antenna, shared antenna is always available */
	if (mvm->cfg->bt_shared_single_ant)
		return true;

	return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC;
}

bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm,
				    enum nl80211_band band)
{
	u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading);

	if (band != NL80211_BAND_2GHZ)
		return false;

	return bt_activity >= BT_LOW_TRAFFIC;
}

u8 iwl_mvm_bt_coex_get_single_ant_msk(struct iwl_mvm *mvm, u8 enabled_ants)
{
	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2) &&
	    (mvm->cfg->non_shared_ant & enabled_ants))
		return mvm->cfg->non_shared_ant;

	return first_antenna(enabled_ants);
}

u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
			   struct ieee80211_tx_info *info, u8 ac)
{
	__le16 fc = hdr->frame_control;
	bool mplut_enabled = iwl_mvm_is_mplut_supported(mvm);

	if (info->band != NL80211_BAND_2GHZ)
		return 0;

	if (unlikely(mvm->bt_tx_prio))
		return mvm->bt_tx_prio - 1;

	if (likely(ieee80211_is_data(fc))) {
		if (likely(ieee80211_is_data_qos(fc))) {
			switch (ac) {
			case IEEE80211_AC_BE:
				return mplut_enabled ? 1 : 0;
			case IEEE80211_AC_VI:
				return mplut_enabled ? 2 : 3;
			case IEEE80211_AC_VO:
				return 3;
			default:
				return 0;
			}
		} else if (is_multicast_ether_addr(hdr->addr1)) {
			return 3;
		} else
			return 0;
	} else if (ieee80211_is_mgmt(fc)) {
		return ieee80211_is_disassoc(fc) ? 0 : 3;
	} else if (ieee80211_is_ctl(fc)) {
		/* ignore cfend and cfendack frames as we never send those */
		return 3;
	}

	return 0;
}

void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm)
{
	iwl_mvm_bt_coex_notif_handle(mvm);
}