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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2013-2014, 2018-2020, 2022-2023 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 */
6#include <linux/ieee80211.h>
7#include <linux/etherdevice.h>
8#include <net/mac80211.h>
9
10#include "fw/api/coex.h"
11#include "iwl-modparams.h"
12#include "mvm.h"
13#include "iwl-debug.h"
14
15/* 20MHz / 40MHz below / 40Mhz above*/
16static const __le64 iwl_ci_mask[][3] = {
17 /* dummy entry for channel 0 */
18 {cpu_to_le64(0), cpu_to_le64(0), cpu_to_le64(0)},
19 {
20 cpu_to_le64(0x0000001FFFULL),
21 cpu_to_le64(0x0ULL),
22 cpu_to_le64(0x00007FFFFFULL),
23 },
24 {
25 cpu_to_le64(0x000000FFFFULL),
26 cpu_to_le64(0x0ULL),
27 cpu_to_le64(0x0003FFFFFFULL),
28 },
29 {
30 cpu_to_le64(0x000003FFFCULL),
31 cpu_to_le64(0x0ULL),
32 cpu_to_le64(0x000FFFFFFCULL),
33 },
34 {
35 cpu_to_le64(0x00001FFFE0ULL),
36 cpu_to_le64(0x0ULL),
37 cpu_to_le64(0x007FFFFFE0ULL),
38 },
39 {
40 cpu_to_le64(0x00007FFF80ULL),
41 cpu_to_le64(0x00007FFFFFULL),
42 cpu_to_le64(0x01FFFFFF80ULL),
43 },
44 {
45 cpu_to_le64(0x0003FFFC00ULL),
46 cpu_to_le64(0x0003FFFFFFULL),
47 cpu_to_le64(0x0FFFFFFC00ULL),
48 },
49 {
50 cpu_to_le64(0x000FFFF000ULL),
51 cpu_to_le64(0x000FFFFFFCULL),
52 cpu_to_le64(0x3FFFFFF000ULL),
53 },
54 {
55 cpu_to_le64(0x007FFF8000ULL),
56 cpu_to_le64(0x007FFFFFE0ULL),
57 cpu_to_le64(0xFFFFFF8000ULL),
58 },
59 {
60 cpu_to_le64(0x01FFFE0000ULL),
61 cpu_to_le64(0x01FFFFFF80ULL),
62 cpu_to_le64(0xFFFFFE0000ULL),
63 },
64 {
65 cpu_to_le64(0x0FFFF00000ULL),
66 cpu_to_le64(0x0FFFFFFC00ULL),
67 cpu_to_le64(0x0ULL),
68 },
69 {
70 cpu_to_le64(0x3FFFC00000ULL),
71 cpu_to_le64(0x3FFFFFF000ULL),
72 cpu_to_le64(0x0)
73 },
74 {
75 cpu_to_le64(0xFFFE000000ULL),
76 cpu_to_le64(0xFFFFFF8000ULL),
77 cpu_to_le64(0x0)
78 },
79 {
80 cpu_to_le64(0xFFF8000000ULL),
81 cpu_to_le64(0xFFFFFE0000ULL),
82 cpu_to_le64(0x0)
83 },
84 {
85 cpu_to_le64(0xFE00000000ULL),
86 cpu_to_le64(0x0ULL),
87 cpu_to_le64(0x0ULL)
88 },
89};
90
91static enum iwl_bt_coex_lut_type
92iwl_get_coex_type(struct iwl_mvm *mvm, const struct ieee80211_vif *vif)
93{
94 struct ieee80211_chanctx_conf *chanctx_conf;
95 enum iwl_bt_coex_lut_type ret;
96 u16 phy_ctx_id;
97 u32 primary_ch_phy_id, secondary_ch_phy_id;
98
99 /*
100 * Checking that we hold mvm->mutex is a good idea, but the rate
101 * control can't acquire the mutex since it runs in Tx path.
102 * So this is racy in that case, but in the worst case, the AMPDU
103 * size limit will be wrong for a short time which is not a big
104 * issue.
105 */
106
107 rcu_read_lock();
108
109 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
110
111 if (!chanctx_conf ||
112 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ) {
113 rcu_read_unlock();
114 return BT_COEX_INVALID_LUT;
115 }
116
117 ret = BT_COEX_TX_DIS_LUT;
118
119 phy_ctx_id = *((u16 *)chanctx_conf->drv_priv);
120 primary_ch_phy_id = le32_to_cpu(mvm->last_bt_ci_cmd.primary_ch_phy_id);
121 secondary_ch_phy_id =
122 le32_to_cpu(mvm->last_bt_ci_cmd.secondary_ch_phy_id);
123
124 if (primary_ch_phy_id == phy_ctx_id)
125 ret = le32_to_cpu(mvm->last_bt_notif.primary_ch_lut);
126 else if (secondary_ch_phy_id == phy_ctx_id)
127 ret = le32_to_cpu(mvm->last_bt_notif.secondary_ch_lut);
128 /* else - default = TX TX disallowed */
129
130 rcu_read_unlock();
131
132 return ret;
133}
134
135int iwl_mvm_send_bt_init_conf(struct iwl_mvm *mvm)
136{
137 struct iwl_bt_coex_cmd bt_cmd = {};
138 u32 mode;
139
140 lockdep_assert_held(&mvm->mutex);
141
142 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) {
143 switch (mvm->bt_force_ant_mode) {
144 case BT_FORCE_ANT_BT:
145 mode = BT_COEX_BT;
146 break;
147 case BT_FORCE_ANT_WIFI:
148 mode = BT_COEX_WIFI;
149 break;
150 default:
151 WARN_ON(1);
152 mode = 0;
153 }
154
155 bt_cmd.mode = cpu_to_le32(mode);
156 goto send_cmd;
157 }
158
159 bt_cmd.mode = cpu_to_le32(BT_COEX_NW);
160
161 if (IWL_MVM_BT_COEX_SYNC2SCO)
162 bt_cmd.enabled_modules |=
163 cpu_to_le32(BT_COEX_SYNC2SCO_ENABLED);
164
165 if (iwl_mvm_is_mplut_supported(mvm))
166 bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_MPLUT_ENABLED);
167
168 bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_HIGH_BAND_RET);
169
170send_cmd:
171 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
172 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
173
174 return iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, 0, sizeof(bt_cmd), &bt_cmd);
175}
176
177static int iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm *mvm, u8 sta_id,
178 bool enable)
179{
180 struct iwl_bt_coex_reduced_txp_update_cmd cmd = {};
181 struct iwl_mvm_sta *mvmsta;
182 u32 value;
183
184 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
185 if (!mvmsta)
186 return 0;
187
188 /* nothing to do */
189 if (mvmsta->bt_reduced_txpower == enable)
190 return 0;
191
192 value = mvmsta->deflink.sta_id;
193
194 if (enable)
195 value |= BT_REDUCED_TX_POWER_BIT;
196
197 IWL_DEBUG_COEX(mvm, "%sable reduced Tx Power for sta %d\n",
198 enable ? "en" : "dis", sta_id);
199
200 cmd.reduced_txp = cpu_to_le32(value);
201 mvmsta->bt_reduced_txpower = enable;
202
203 return iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_REDUCED_TXP,
204 CMD_ASYNC, sizeof(cmd), &cmd);
205}
206
207struct iwl_bt_iterator_data {
208 struct iwl_bt_coex_profile_notif *notif;
209 struct iwl_mvm *mvm;
210 struct ieee80211_chanctx_conf *primary;
211 struct ieee80211_chanctx_conf *secondary;
212 bool primary_ll;
213 u8 primary_load;
214 u8 secondary_load;
215};
216
217static inline
218void iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm *mvm,
219 struct ieee80211_vif *vif,
220 bool enable, int rssi)
221{
222 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
223
224 mvmvif->bf_data.last_bt_coex_event = rssi;
225 mvmvif->bf_data.bt_coex_max_thold =
226 enable ? -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH : 0;
227 mvmvif->bf_data.bt_coex_min_thold =
228 enable ? -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH : 0;
229}
230
231#define MVM_COEX_TCM_PERIOD (HZ * 10)
232
233static void iwl_mvm_bt_coex_tcm_based_ci(struct iwl_mvm *mvm,
234 struct iwl_bt_iterator_data *data)
235{
236 unsigned long now = jiffies;
237
238 if (!time_after(now, mvm->bt_coex_last_tcm_ts + MVM_COEX_TCM_PERIOD))
239 return;
240
241 mvm->bt_coex_last_tcm_ts = now;
242
243 /* We assume here that we don't have more than 2 vifs on 2.4GHz */
244
245 /* if the primary is low latency, it will stay primary */
246 if (data->primary_ll)
247 return;
248
249 if (data->primary_load >= data->secondary_load)
250 return;
251
252 swap(data->primary, data->secondary);
253}
254
255static void iwl_mvm_bt_notif_per_link(struct iwl_mvm *mvm,
256 struct ieee80211_vif *vif,
257 struct iwl_bt_iterator_data *data,
258 unsigned int link_id)
259{
260 /* default smps_mode is AUTOMATIC - only used for client modes */
261 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC;
262 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
263 u32 bt_activity_grading, min_ag_for_static_smps;
264 struct ieee80211_chanctx_conf *chanctx_conf;
265 struct iwl_mvm_vif_link_info *link_info;
266 struct ieee80211_bss_conf *link_conf;
267 int ave_rssi;
268
269 lockdep_assert_held(&mvm->mutex);
270
271 link_info = mvmvif->link[link_id];
272 if (!link_info)
273 return;
274
275 link_conf = rcu_dereference(vif->link_conf[link_id]);
276 /* This can happen due to races: if we receive the notification
277 * and have the mutex held, while mac80211 is stuck on our mutex
278 * in the middle of removing the link.
279 */
280 if (!link_conf)
281 return;
282
283 chanctx_conf = rcu_dereference(link_conf->chanctx_conf);
284
285 /* If channel context is invalid or not on 2.4GHz .. */
286 if ((!chanctx_conf ||
287 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ)) {
288 if (vif->type == NL80211_IFTYPE_STATION) {
289 /* ... relax constraints and disable rssi events */
290 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
291 smps_mode, link_id);
292 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id,
293 false);
294 /* FIXME: should this be per link? */
295 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
296 }
297 return;
298 }
299
300 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2))
301 min_ag_for_static_smps = BT_VERY_HIGH_TRAFFIC;
302 else
303 min_ag_for_static_smps = BT_HIGH_TRAFFIC;
304
305 bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading);
306 if (bt_activity_grading >= min_ag_for_static_smps)
307 smps_mode = IEEE80211_SMPS_STATIC;
308 else if (bt_activity_grading >= BT_LOW_TRAFFIC)
309 smps_mode = IEEE80211_SMPS_DYNAMIC;
310
311 /* relax SMPS constraints for next association */
312 if (!vif->cfg.assoc)
313 smps_mode = IEEE80211_SMPS_AUTOMATIC;
314
315 if (link_info->phy_ctxt &&
316 (mvm->last_bt_notif.rrc_status & BIT(link_info->phy_ctxt->id)))
317 smps_mode = IEEE80211_SMPS_AUTOMATIC;
318
319 IWL_DEBUG_COEX(data->mvm,
320 "mac %d link %d: bt_activity_grading %d smps_req %d\n",
321 mvmvif->id, link_info->fw_link_id,
322 bt_activity_grading, smps_mode);
323
324 if (vif->type == NL80211_IFTYPE_STATION)
325 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
326 smps_mode, link_id);
327
328 /* low latency is always primary */
329 if (iwl_mvm_vif_low_latency(mvmvif)) {
330 data->primary_ll = true;
331
332 data->secondary = data->primary;
333 data->primary = chanctx_conf;
334 }
335
336 if (vif->type == NL80211_IFTYPE_AP) {
337 if (!mvmvif->ap_ibss_active)
338 return;
339
340 if (chanctx_conf == data->primary)
341 return;
342
343 if (!data->primary_ll) {
344 /*
345 * downgrade the current primary no matter what its
346 * type is.
347 */
348 data->secondary = data->primary;
349 data->primary = chanctx_conf;
350 } else {
351 /* there is low latency vif - we will be secondary */
352 data->secondary = chanctx_conf;
353 }
354
355 /* FIXME: TCM load per interface? or need something per link? */
356 if (data->primary == chanctx_conf)
357 data->primary_load = mvm->tcm.result.load[mvmvif->id];
358 else if (data->secondary == chanctx_conf)
359 data->secondary_load = mvm->tcm.result.load[mvmvif->id];
360 return;
361 }
362
363 /*
364 * STA / P2P Client, try to be primary if first vif. If we are in low
365 * latency mode, we are already in primary and just don't do much
366 */
367 if (!data->primary || data->primary == chanctx_conf)
368 data->primary = chanctx_conf;
369 else if (!data->secondary)
370 /* if secondary is not NULL, it might be a GO */
371 data->secondary = chanctx_conf;
372
373 /* FIXME: TCM load per interface? or need something per link? */
374 if (data->primary == chanctx_conf)
375 data->primary_load = mvm->tcm.result.load[mvmvif->id];
376 else if (data->secondary == chanctx_conf)
377 data->secondary_load = mvm->tcm.result.load[mvmvif->id];
378 /*
379 * don't reduce the Tx power if one of these is true:
380 * we are in LOOSE
381 * BT is inactive
382 * we are not associated
383 */
384 if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT ||
385 le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF ||
386 !vif->cfg.assoc) {
387 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, false);
388 /* FIXME: should this be per link? */
389 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
390 return;
391 }
392
393 /* try to get the avg rssi from fw */
394 ave_rssi = mvmvif->bf_data.ave_beacon_signal;
395
396 /* if the RSSI isn't valid, fake it is very low */
397 if (!ave_rssi)
398 ave_rssi = -100;
399 if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) {
400 if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id,
401 true))
402 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
403 } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) {
404 if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id,
405 false))
406 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
407 }
408
409 /* Begin to monitor the RSSI: it may influence the reduced Tx power */
410 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi);
411}
412
413/* must be called under rcu_read_lock */
414static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac,
415 struct ieee80211_vif *vif)
416{
417 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
418 struct iwl_bt_iterator_data *data = _data;
419 struct iwl_mvm *mvm = data->mvm;
420 unsigned int link_id;
421
422 lockdep_assert_held(&mvm->mutex);
423
424 switch (vif->type) {
425 case NL80211_IFTYPE_STATION:
426 break;
427 case NL80211_IFTYPE_AP:
428 if (!mvmvif->ap_ibss_active)
429 return;
430 break;
431 default:
432 return;
433 }
434
435 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++)
436 iwl_mvm_bt_notif_per_link(mvm, vif, data, link_id);
437}
438
439static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm)
440{
441 struct iwl_bt_iterator_data data = {
442 .mvm = mvm,
443 .notif = &mvm->last_bt_notif,
444 };
445 struct iwl_bt_coex_ci_cmd cmd = {};
446 u8 ci_bw_idx;
447
448 /* Ignore updates if we are in force mode */
449 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
450 return;
451
452 rcu_read_lock();
453 ieee80211_iterate_active_interfaces_atomic(
454 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
455 iwl_mvm_bt_notif_iterator, &data);
456
457 iwl_mvm_bt_coex_tcm_based_ci(mvm, &data);
458
459 if (data.primary) {
460 struct ieee80211_chanctx_conf *chan = data.primary;
461 if (WARN_ON(!chan->def.chan)) {
462 rcu_read_unlock();
463 return;
464 }
465
466 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
467 ci_bw_idx = 0;
468 } else {
469 if (chan->def.center_freq1 >
470 chan->def.chan->center_freq)
471 ci_bw_idx = 2;
472 else
473 ci_bw_idx = 1;
474 }
475
476 cmd.bt_primary_ci =
477 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
478 cmd.primary_ch_phy_id =
479 cpu_to_le32(*((u16 *)data.primary->drv_priv));
480 }
481
482 if (data.secondary) {
483 struct ieee80211_chanctx_conf *chan = data.secondary;
484 if (WARN_ON(!data.secondary->def.chan)) {
485 rcu_read_unlock();
486 return;
487 }
488
489 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
490 ci_bw_idx = 0;
491 } else {
492 if (chan->def.center_freq1 >
493 chan->def.chan->center_freq)
494 ci_bw_idx = 2;
495 else
496 ci_bw_idx = 1;
497 }
498
499 cmd.bt_secondary_ci =
500 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
501 cmd.secondary_ch_phy_id =
502 cpu_to_le32(*((u16 *)data.secondary->drv_priv));
503 }
504
505 rcu_read_unlock();
506
507 /* Don't spam the fw with the same command over and over */
508 if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) {
509 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0,
510 sizeof(cmd), &cmd))
511 IWL_ERR(mvm, "Failed to send BT_CI cmd\n");
512 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd));
513 }
514}
515
516void iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm,
517 struct iwl_rx_cmd_buffer *rxb)
518{
519 struct iwl_rx_packet *pkt = rxb_addr(rxb);
520 struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data;
521
522 IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n");
523 IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance);
524 IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n",
525 le32_to_cpu(notif->primary_ch_lut));
526 IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n",
527 le32_to_cpu(notif->secondary_ch_lut));
528 IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n",
529 le32_to_cpu(notif->bt_activity_grading));
530
531 /* remember this notification for future use: rssi fluctuations */
532 memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif));
533
534 iwl_mvm_bt_coex_notif_handle(mvm);
535}
536
537void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
538 enum ieee80211_rssi_event_data rssi_event)
539{
540 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
541 int ret;
542
543 lockdep_assert_held(&mvm->mutex);
544
545 /* Ignore updates if we are in force mode */
546 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
547 return;
548
549 /*
550 * Rssi update while not associated - can happen since the statistics
551 * are handled asynchronously
552 */
553 if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA)
554 return;
555
556 /* No BT - reports should be disabled */
557 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF)
558 return;
559
560 IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid,
561 rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW");
562
563 /*
564 * Check if rssi is good enough for reduced Tx power, but not in loose
565 * scheme.
566 */
567 if (rssi_event == RSSI_EVENT_LOW ||
568 iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT)
569 ret = iwl_mvm_bt_coex_reduced_txp(mvm,
570 mvmvif->deflink.ap_sta_id,
571 false);
572 else
573 ret = iwl_mvm_bt_coex_reduced_txp(mvm,
574 mvmvif->deflink.ap_sta_id,
575 true);
576
577 if (ret)
578 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n");
579}
580
581#define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000)
582#define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200)
583
584u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm,
585 struct ieee80211_sta *sta)
586{
587 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
588 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
589 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt;
590 enum iwl_bt_coex_lut_type lut_type;
591
592 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id))
593 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
594
595 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
596 BT_HIGH_TRAFFIC)
597 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
598
599 lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
600
601 if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT)
602 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
603
604 /* tight coex, high bt traffic, reduce AGG time limit */
605 return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT;
606}
607
608bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm,
609 struct ieee80211_sta *sta)
610{
611 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
612 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
613 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt;
614 enum iwl_bt_coex_lut_type lut_type;
615
616 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id))
617 return true;
618
619 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
620 BT_HIGH_TRAFFIC)
621 return true;
622
623 /*
624 * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas
625 * since BT is already killed.
626 * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while
627 * we Tx.
628 * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO.
629 */
630 lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
631 return lut_type != BT_COEX_LOOSE_LUT;
632}
633
634bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant)
635{
636 if (ant & mvm->cfg->non_shared_ant)
637 return true;
638
639 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
640 BT_HIGH_TRAFFIC;
641}
642
643bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm)
644{
645 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC;
646}
647
648bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm,
649 enum nl80211_band band)
650{
651 u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading);
652
653 if (band != NL80211_BAND_2GHZ)
654 return false;
655
656 return bt_activity >= BT_LOW_TRAFFIC;
657}
658
659u8 iwl_mvm_bt_coex_get_single_ant_msk(struct iwl_mvm *mvm, u8 enabled_ants)
660{
661 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2) &&
662 (mvm->cfg->non_shared_ant & enabled_ants))
663 return mvm->cfg->non_shared_ant;
664
665 return first_antenna(enabled_ants);
666}
667
668u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
669 struct ieee80211_tx_info *info, u8 ac)
670{
671 __le16 fc = hdr->frame_control;
672 bool mplut_enabled = iwl_mvm_is_mplut_supported(mvm);
673
674 if (info->band != NL80211_BAND_2GHZ)
675 return 0;
676
677 if (unlikely(mvm->bt_tx_prio))
678 return mvm->bt_tx_prio - 1;
679
680 if (likely(ieee80211_is_data(fc))) {
681 if (likely(ieee80211_is_data_qos(fc))) {
682 switch (ac) {
683 case IEEE80211_AC_BE:
684 return mplut_enabled ? 1 : 0;
685 case IEEE80211_AC_VI:
686 return mplut_enabled ? 2 : 3;
687 case IEEE80211_AC_VO:
688 return 3;
689 default:
690 return 0;
691 }
692 } else if (is_multicast_ether_addr(hdr->addr1)) {
693 return 3;
694 } else
695 return 0;
696 } else if (ieee80211_is_mgmt(fc)) {
697 return ieee80211_is_disassoc(fc) ? 0 : 3;
698 } else if (ieee80211_is_ctl(fc)) {
699 /* ignore cfend and cfendack frames as we never send those */
700 return 3;
701 }
702
703 return 0;
704}
705
706void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm)
707{
708 iwl_mvm_bt_coex_notif_handle(mvm);
709}
1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2013-2014, 2018-2020, 2022-2024 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 */
6#include <linux/ieee80211.h>
7#include <linux/etherdevice.h>
8#include <net/mac80211.h>
9
10#include "fw/api/coex.h"
11#include "iwl-modparams.h"
12#include "mvm.h"
13#include "iwl-debug.h"
14
15/* 20MHz / 40MHz below / 40Mhz above*/
16static const __le64 iwl_ci_mask[][3] = {
17 /* dummy entry for channel 0 */
18 {cpu_to_le64(0), cpu_to_le64(0), cpu_to_le64(0)},
19 {
20 cpu_to_le64(0x0000001FFFULL),
21 cpu_to_le64(0x0ULL),
22 cpu_to_le64(0x00007FFFFFULL),
23 },
24 {
25 cpu_to_le64(0x000000FFFFULL),
26 cpu_to_le64(0x0ULL),
27 cpu_to_le64(0x0003FFFFFFULL),
28 },
29 {
30 cpu_to_le64(0x000003FFFCULL),
31 cpu_to_le64(0x0ULL),
32 cpu_to_le64(0x000FFFFFFCULL),
33 },
34 {
35 cpu_to_le64(0x00001FFFE0ULL),
36 cpu_to_le64(0x0ULL),
37 cpu_to_le64(0x007FFFFFE0ULL),
38 },
39 {
40 cpu_to_le64(0x00007FFF80ULL),
41 cpu_to_le64(0x00007FFFFFULL),
42 cpu_to_le64(0x01FFFFFF80ULL),
43 },
44 {
45 cpu_to_le64(0x0003FFFC00ULL),
46 cpu_to_le64(0x0003FFFFFFULL),
47 cpu_to_le64(0x0FFFFFFC00ULL),
48 },
49 {
50 cpu_to_le64(0x000FFFF000ULL),
51 cpu_to_le64(0x000FFFFFFCULL),
52 cpu_to_le64(0x3FFFFFF000ULL),
53 },
54 {
55 cpu_to_le64(0x007FFF8000ULL),
56 cpu_to_le64(0x007FFFFFE0ULL),
57 cpu_to_le64(0xFFFFFF8000ULL),
58 },
59 {
60 cpu_to_le64(0x01FFFE0000ULL),
61 cpu_to_le64(0x01FFFFFF80ULL),
62 cpu_to_le64(0xFFFFFE0000ULL),
63 },
64 {
65 cpu_to_le64(0x0FFFF00000ULL),
66 cpu_to_le64(0x0FFFFFFC00ULL),
67 cpu_to_le64(0x0ULL),
68 },
69 {
70 cpu_to_le64(0x3FFFC00000ULL),
71 cpu_to_le64(0x3FFFFFF000ULL),
72 cpu_to_le64(0x0)
73 },
74 {
75 cpu_to_le64(0xFFFE000000ULL),
76 cpu_to_le64(0xFFFFFF8000ULL),
77 cpu_to_le64(0x0)
78 },
79 {
80 cpu_to_le64(0xFFF8000000ULL),
81 cpu_to_le64(0xFFFFFE0000ULL),
82 cpu_to_le64(0x0)
83 },
84 {
85 cpu_to_le64(0xFE00000000ULL),
86 cpu_to_le64(0x0ULL),
87 cpu_to_le64(0x0ULL)
88 },
89};
90
91static enum iwl_bt_coex_lut_type
92iwl_get_coex_type(struct iwl_mvm *mvm, const struct ieee80211_vif *vif)
93{
94 struct ieee80211_chanctx_conf *chanctx_conf;
95 enum iwl_bt_coex_lut_type ret;
96 u16 phy_ctx_id;
97 u32 primary_ch_phy_id, secondary_ch_phy_id;
98
99 /*
100 * Checking that we hold mvm->mutex is a good idea, but the rate
101 * control can't acquire the mutex since it runs in Tx path.
102 * So this is racy in that case, but in the worst case, the AMPDU
103 * size limit will be wrong for a short time which is not a big
104 * issue.
105 */
106
107 rcu_read_lock();
108
109 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
110
111 if (!chanctx_conf ||
112 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ) {
113 rcu_read_unlock();
114 return BT_COEX_INVALID_LUT;
115 }
116
117 ret = BT_COEX_TX_DIS_LUT;
118
119 phy_ctx_id = *((u16 *)chanctx_conf->drv_priv);
120 primary_ch_phy_id = le32_to_cpu(mvm->last_bt_ci_cmd.primary_ch_phy_id);
121 secondary_ch_phy_id =
122 le32_to_cpu(mvm->last_bt_ci_cmd.secondary_ch_phy_id);
123
124 if (primary_ch_phy_id == phy_ctx_id)
125 ret = le32_to_cpu(mvm->last_bt_notif.primary_ch_lut);
126 else if (secondary_ch_phy_id == phy_ctx_id)
127 ret = le32_to_cpu(mvm->last_bt_notif.secondary_ch_lut);
128 /* else - default = TX TX disallowed */
129
130 rcu_read_unlock();
131
132 return ret;
133}
134
135int iwl_mvm_send_bt_init_conf(struct iwl_mvm *mvm)
136{
137 struct iwl_bt_coex_cmd bt_cmd = {};
138 u32 mode;
139
140 lockdep_assert_held(&mvm->mutex);
141
142 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) {
143 switch (mvm->bt_force_ant_mode) {
144 case BT_FORCE_ANT_BT:
145 mode = BT_COEX_BT;
146 break;
147 case BT_FORCE_ANT_WIFI:
148 mode = BT_COEX_WIFI;
149 break;
150 default:
151 WARN_ON(1);
152 mode = 0;
153 }
154
155 bt_cmd.mode = cpu_to_le32(mode);
156 goto send_cmd;
157 }
158
159 bt_cmd.mode = cpu_to_le32(BT_COEX_NW);
160
161 if (IWL_MVM_BT_COEX_SYNC2SCO)
162 bt_cmd.enabled_modules |=
163 cpu_to_le32(BT_COEX_SYNC2SCO_ENABLED);
164
165 if (iwl_mvm_is_mplut_supported(mvm))
166 bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_MPLUT_ENABLED);
167
168 bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_HIGH_BAND_RET);
169
170send_cmd:
171 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
172 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
173
174 return iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, 0, sizeof(bt_cmd), &bt_cmd);
175}
176
177static int iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm *mvm, u8 sta_id,
178 bool enable)
179{
180 struct iwl_bt_coex_reduced_txp_update_cmd cmd = {};
181 struct iwl_mvm_sta *mvmsta;
182 u32 value;
183
184 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
185 return 0;
186
187 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
188 if (!mvmsta)
189 return 0;
190
191 /* nothing to do */
192 if (mvmsta->bt_reduced_txpower == enable)
193 return 0;
194
195 value = mvmsta->deflink.sta_id;
196
197 if (enable)
198 value |= BT_REDUCED_TX_POWER_BIT;
199
200 IWL_DEBUG_COEX(mvm, "%sable reduced Tx Power for sta %d\n",
201 enable ? "en" : "dis", sta_id);
202
203 cmd.reduced_txp = cpu_to_le32(value);
204 mvmsta->bt_reduced_txpower = enable;
205
206 return iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_REDUCED_TXP,
207 CMD_ASYNC, sizeof(cmd), &cmd);
208}
209
210struct iwl_bt_iterator_data {
211 struct iwl_bt_coex_profile_notif *notif;
212 struct iwl_mvm *mvm;
213 struct ieee80211_chanctx_conf *primary;
214 struct ieee80211_chanctx_conf *secondary;
215 bool primary_ll;
216 u8 primary_load;
217 u8 secondary_load;
218};
219
220static inline
221void iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm *mvm,
222 struct ieee80211_vif *vif,
223 bool enable, int rssi)
224{
225 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
226
227 mvmvif->bf_data.last_bt_coex_event = rssi;
228 mvmvif->bf_data.bt_coex_max_thold =
229 enable ? -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH : 0;
230 mvmvif->bf_data.bt_coex_min_thold =
231 enable ? -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH : 0;
232}
233
234#define MVM_COEX_TCM_PERIOD (HZ * 10)
235
236static void iwl_mvm_bt_coex_tcm_based_ci(struct iwl_mvm *mvm,
237 struct iwl_bt_iterator_data *data)
238{
239 unsigned long now = jiffies;
240
241 if (!time_after(now, mvm->bt_coex_last_tcm_ts + MVM_COEX_TCM_PERIOD))
242 return;
243
244 mvm->bt_coex_last_tcm_ts = now;
245
246 /* We assume here that we don't have more than 2 vifs on 2.4GHz */
247
248 /* if the primary is low latency, it will stay primary */
249 if (data->primary_ll)
250 return;
251
252 if (data->primary_load >= data->secondary_load)
253 return;
254
255 swap(data->primary, data->secondary);
256}
257
258static void iwl_mvm_bt_coex_enable_esr(struct iwl_mvm *mvm,
259 struct ieee80211_vif *vif, bool enable)
260{
261 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
262
263 lockdep_assert_held(&mvm->mutex);
264
265 if (!vif->cfg.assoc || !ieee80211_vif_is_mld(vif))
266 return;
267
268 /* Done already */
269 if ((mvmvif->esr_disable_reason & IWL_MVM_ESR_DISABLE_COEX) == !enable)
270 return;
271
272 if (enable)
273 mvmvif->esr_disable_reason &= ~IWL_MVM_ESR_DISABLE_COEX;
274 else
275 mvmvif->esr_disable_reason |= IWL_MVM_ESR_DISABLE_COEX;
276
277 iwl_mvm_recalc_esr(mvm, vif);
278}
279
280/*
281 * This function receives the LB link id and checks if eSR should be
282 * enabled or disabled (due to BT coex)
283 */
284static bool
285iwl_mvm_bt_coex_calculate_esr_mode(struct iwl_mvm *mvm,
286 struct ieee80211_vif *vif,
287 int link_id, int primary_link)
288{
289 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
290 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id];
291 bool have_wifi_loss_rate =
292 iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
293 BT_PROFILE_NOTIFICATION, 0) > 4;
294 s8 link_rssi = 0;
295 u8 wifi_loss_rate;
296
297 lockdep_assert_held(&mvm->mutex);
298
299 if (mvm->last_bt_notif.wifi_loss_low_rssi == BT_OFF)
300 return true;
301
302 /* If LB link is the primary one we should always disable eSR */
303 if (link_id == primary_link)
304 return false;
305
306 /* The feature is not supported */
307 if (!have_wifi_loss_rate)
308 return true;
309
310 /*
311 * We might not have a link_info when checking whether we can
312 * (re)enable eSR - the LB link might not exist yet
313 */
314 if (link_info)
315 link_rssi = (s8)link_info->beacon_stats.avg_signal;
316
317 /*
318 * In case we don't know the RSSI - take the lower wifi loss,
319 * so we will more likely enter eSR, and if RSSI is low -
320 * we will get an update on this and exit eSR.
321 */
322 if (!link_rssi)
323 wifi_loss_rate = mvm->last_bt_notif.wifi_loss_mid_high_rssi;
324
325 else if (!(mvmvif->esr_disable_reason & IWL_MVM_ESR_DISABLE_COEX))
326 /* RSSI needs to get really low to disable eSR... */
327 wifi_loss_rate =
328 link_rssi <= -IWL_MVM_BT_COEX_DISABLE_ESR_THRESH ?
329 mvm->last_bt_notif.wifi_loss_low_rssi :
330 mvm->last_bt_notif.wifi_loss_mid_high_rssi;
331 else
332 /* ...And really high before we enable it back */
333 wifi_loss_rate =
334 link_rssi <= -IWL_MVM_BT_COEX_ENABLE_ESR_THRESH ?
335 mvm->last_bt_notif.wifi_loss_low_rssi :
336 mvm->last_bt_notif.wifi_loss_mid_high_rssi;
337
338 return wifi_loss_rate <= IWL_MVM_BT_COEX_WIFI_LOSS_THRESH;
339}
340
341void iwl_mvm_bt_coex_update_link_esr(struct iwl_mvm *mvm,
342 struct ieee80211_vif *vif,
343 int link_id)
344{
345 unsigned long usable_links = ieee80211_vif_usable_links(vif);
346 int primary_link = iwl_mvm_mld_get_primary_link(mvm, vif,
347 usable_links);
348 bool enable;
349
350 /* Not assoc, not MLD vif or only one usable link */
351 if (primary_link < 0)
352 return;
353
354 enable = iwl_mvm_bt_coex_calculate_esr_mode(mvm, vif, link_id,
355 primary_link);
356
357 iwl_mvm_bt_coex_enable_esr(mvm, vif, enable);
358}
359
360static void iwl_mvm_bt_notif_per_link(struct iwl_mvm *mvm,
361 struct ieee80211_vif *vif,
362 struct iwl_bt_iterator_data *data,
363 unsigned int link_id)
364{
365 /* default smps_mode is AUTOMATIC - only used for client modes */
366 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC;
367 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
368 u32 bt_activity_grading, min_ag_for_static_smps;
369 struct ieee80211_chanctx_conf *chanctx_conf;
370 struct iwl_mvm_vif_link_info *link_info;
371 struct ieee80211_bss_conf *link_conf;
372 int ave_rssi;
373
374 lockdep_assert_held(&mvm->mutex);
375
376 link_info = mvmvif->link[link_id];
377 if (!link_info)
378 return;
379
380 link_conf = rcu_dereference(vif->link_conf[link_id]);
381 /* This can happen due to races: if we receive the notification
382 * and have the mutex held, while mac80211 is stuck on our mutex
383 * in the middle of removing the link.
384 */
385 if (!link_conf)
386 return;
387
388 chanctx_conf = rcu_dereference(link_conf->chanctx_conf);
389
390 /* If channel context is invalid or not on 2.4GHz .. */
391 if ((!chanctx_conf ||
392 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ)) {
393 if (vif->type == NL80211_IFTYPE_STATION) {
394 /* ... relax constraints and disable rssi events */
395 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
396 smps_mode, link_id);
397 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id,
398 false);
399 /* FIXME: should this be per link? */
400 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
401 }
402 return;
403 }
404
405 iwl_mvm_bt_coex_update_link_esr(mvm, vif, link_id);
406
407 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2))
408 min_ag_for_static_smps = BT_VERY_HIGH_TRAFFIC;
409 else
410 min_ag_for_static_smps = BT_HIGH_TRAFFIC;
411
412 bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading);
413 if (bt_activity_grading >= min_ag_for_static_smps)
414 smps_mode = IEEE80211_SMPS_STATIC;
415 else if (bt_activity_grading >= BT_LOW_TRAFFIC)
416 smps_mode = IEEE80211_SMPS_DYNAMIC;
417
418 /* relax SMPS constraints for next association */
419 if (!vif->cfg.assoc)
420 smps_mode = IEEE80211_SMPS_AUTOMATIC;
421
422 if (link_info->phy_ctxt &&
423 (mvm->last_bt_notif.rrc_status & BIT(link_info->phy_ctxt->id)))
424 smps_mode = IEEE80211_SMPS_AUTOMATIC;
425
426 IWL_DEBUG_COEX(data->mvm,
427 "mac %d link %d: bt_activity_grading %d smps_req %d\n",
428 mvmvif->id, link_info->fw_link_id,
429 bt_activity_grading, smps_mode);
430
431 if (vif->type == NL80211_IFTYPE_STATION)
432 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
433 smps_mode, link_id);
434
435 /* low latency is always primary */
436 if (iwl_mvm_vif_low_latency(mvmvif)) {
437 data->primary_ll = true;
438
439 data->secondary = data->primary;
440 data->primary = chanctx_conf;
441 }
442
443 if (vif->type == NL80211_IFTYPE_AP) {
444 if (!mvmvif->ap_ibss_active)
445 return;
446
447 if (chanctx_conf == data->primary)
448 return;
449
450 if (!data->primary_ll) {
451 /*
452 * downgrade the current primary no matter what its
453 * type is.
454 */
455 data->secondary = data->primary;
456 data->primary = chanctx_conf;
457 } else {
458 /* there is low latency vif - we will be secondary */
459 data->secondary = chanctx_conf;
460 }
461
462 /* FIXME: TCM load per interface? or need something per link? */
463 if (data->primary == chanctx_conf)
464 data->primary_load = mvm->tcm.result.load[mvmvif->id];
465 else if (data->secondary == chanctx_conf)
466 data->secondary_load = mvm->tcm.result.load[mvmvif->id];
467 return;
468 }
469
470 /*
471 * STA / P2P Client, try to be primary if first vif. If we are in low
472 * latency mode, we are already in primary and just don't do much
473 */
474 if (!data->primary || data->primary == chanctx_conf)
475 data->primary = chanctx_conf;
476 else if (!data->secondary)
477 /* if secondary is not NULL, it might be a GO */
478 data->secondary = chanctx_conf;
479
480 /* FIXME: TCM load per interface? or need something per link? */
481 if (data->primary == chanctx_conf)
482 data->primary_load = mvm->tcm.result.load[mvmvif->id];
483 else if (data->secondary == chanctx_conf)
484 data->secondary_load = mvm->tcm.result.load[mvmvif->id];
485 /*
486 * don't reduce the Tx power if one of these is true:
487 * we are in LOOSE
488 * BT is inactive
489 * we are not associated
490 */
491 if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT ||
492 le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF ||
493 !vif->cfg.assoc) {
494 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, false);
495 /* FIXME: should this be per link? */
496 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
497 return;
498 }
499
500 /* try to get the avg rssi from fw */
501 ave_rssi = mvmvif->bf_data.ave_beacon_signal;
502
503 /* if the RSSI isn't valid, fake it is very low */
504 if (!ave_rssi)
505 ave_rssi = -100;
506 if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) {
507 if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id,
508 true))
509 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
510 } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) {
511 if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id,
512 false))
513 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
514 }
515
516 /* Begin to monitor the RSSI: it may influence the reduced Tx power */
517 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi);
518}
519
520/* must be called under rcu_read_lock */
521static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac,
522 struct ieee80211_vif *vif)
523{
524 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
525 struct iwl_bt_iterator_data *data = _data;
526 struct iwl_mvm *mvm = data->mvm;
527 unsigned int link_id;
528
529 lockdep_assert_held(&mvm->mutex);
530
531 switch (vif->type) {
532 case NL80211_IFTYPE_STATION:
533 break;
534 case NL80211_IFTYPE_AP:
535 if (!mvmvif->ap_ibss_active)
536 return;
537 break;
538 default:
539 return;
540 }
541
542 /* When BT is off this will be 0 */
543 if (data->notif->wifi_loss_low_rssi == BT_OFF)
544 iwl_mvm_bt_coex_enable_esr(mvm, vif, true);
545
546 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++)
547 iwl_mvm_bt_notif_per_link(mvm, vif, data, link_id);
548}
549
550static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm)
551{
552 struct iwl_bt_iterator_data data = {
553 .mvm = mvm,
554 .notif = &mvm->last_bt_notif,
555 };
556 struct iwl_bt_coex_ci_cmd cmd = {};
557 u8 ci_bw_idx;
558
559 /* Ignore updates if we are in force mode */
560 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
561 return;
562
563 rcu_read_lock();
564 ieee80211_iterate_active_interfaces_atomic(
565 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
566 iwl_mvm_bt_notif_iterator, &data);
567
568 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
569 rcu_read_unlock();
570 return;
571 }
572
573 iwl_mvm_bt_coex_tcm_based_ci(mvm, &data);
574
575 if (data.primary) {
576 struct ieee80211_chanctx_conf *chan = data.primary;
577 if (WARN_ON(!chan->def.chan)) {
578 rcu_read_unlock();
579 return;
580 }
581
582 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
583 ci_bw_idx = 0;
584 } else {
585 if (chan->def.center_freq1 >
586 chan->def.chan->center_freq)
587 ci_bw_idx = 2;
588 else
589 ci_bw_idx = 1;
590 }
591
592 cmd.bt_primary_ci =
593 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
594 cmd.primary_ch_phy_id =
595 cpu_to_le32(*((u16 *)data.primary->drv_priv));
596 }
597
598 if (data.secondary) {
599 struct ieee80211_chanctx_conf *chan = data.secondary;
600 if (WARN_ON(!data.secondary->def.chan)) {
601 rcu_read_unlock();
602 return;
603 }
604
605 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
606 ci_bw_idx = 0;
607 } else {
608 if (chan->def.center_freq1 >
609 chan->def.chan->center_freq)
610 ci_bw_idx = 2;
611 else
612 ci_bw_idx = 1;
613 }
614
615 cmd.bt_secondary_ci =
616 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
617 cmd.secondary_ch_phy_id =
618 cpu_to_le32(*((u16 *)data.secondary->drv_priv));
619 }
620
621 rcu_read_unlock();
622
623 /* Don't spam the fw with the same command over and over */
624 if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) {
625 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0,
626 sizeof(cmd), &cmd))
627 IWL_ERR(mvm, "Failed to send BT_CI cmd\n");
628 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd));
629 }
630}
631
632void iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm,
633 struct iwl_rx_cmd_buffer *rxb)
634{
635 struct iwl_rx_packet *pkt = rxb_addr(rxb);
636 struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data;
637
638 IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n");
639 IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance);
640 IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n",
641 le32_to_cpu(notif->primary_ch_lut));
642 IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n",
643 le32_to_cpu(notif->secondary_ch_lut));
644 IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n",
645 le32_to_cpu(notif->bt_activity_grading));
646
647 /* remember this notification for future use: rssi fluctuations */
648 memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif));
649
650 iwl_mvm_bt_coex_notif_handle(mvm);
651}
652
653void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
654 enum ieee80211_rssi_event_data rssi_event)
655{
656 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
657 int ret;
658
659 lockdep_assert_held(&mvm->mutex);
660
661 /* Ignore updates if we are in force mode */
662 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
663 return;
664
665 /*
666 * Rssi update while not associated - can happen since the statistics
667 * are handled asynchronously
668 */
669 if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA)
670 return;
671
672 /* No BT - reports should be disabled */
673 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF)
674 return;
675
676 IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid,
677 rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW");
678
679 /*
680 * Check if rssi is good enough for reduced Tx power, but not in loose
681 * scheme.
682 */
683 if (rssi_event == RSSI_EVENT_LOW ||
684 iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT)
685 ret = iwl_mvm_bt_coex_reduced_txp(mvm,
686 mvmvif->deflink.ap_sta_id,
687 false);
688 else
689 ret = iwl_mvm_bt_coex_reduced_txp(mvm,
690 mvmvif->deflink.ap_sta_id,
691 true);
692
693 if (ret)
694 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n");
695}
696
697#define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000)
698#define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200)
699
700u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm,
701 struct ieee80211_sta *sta)
702{
703 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
704 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
705 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt;
706 enum iwl_bt_coex_lut_type lut_type;
707
708 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id))
709 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
710
711 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
712 BT_HIGH_TRAFFIC)
713 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
714
715 lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
716
717 if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT)
718 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
719
720 /* tight coex, high bt traffic, reduce AGG time limit */
721 return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT;
722}
723
724bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm,
725 struct ieee80211_sta *sta)
726{
727 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
728 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
729 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt;
730 enum iwl_bt_coex_lut_type lut_type;
731
732 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id))
733 return true;
734
735 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
736 BT_HIGH_TRAFFIC)
737 return true;
738
739 /*
740 * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas
741 * since BT is already killed.
742 * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while
743 * we Tx.
744 * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO.
745 */
746 lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
747 return lut_type != BT_COEX_LOOSE_LUT;
748}
749
750bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant)
751{
752 if (ant & mvm->cfg->non_shared_ant)
753 return true;
754
755 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
756 BT_HIGH_TRAFFIC;
757}
758
759bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm)
760{
761 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC;
762}
763
764bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm,
765 enum nl80211_band band)
766{
767 u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading);
768
769 if (band != NL80211_BAND_2GHZ)
770 return false;
771
772 return bt_activity >= BT_LOW_TRAFFIC;
773}
774
775u8 iwl_mvm_bt_coex_get_single_ant_msk(struct iwl_mvm *mvm, u8 enabled_ants)
776{
777 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2) &&
778 (mvm->cfg->non_shared_ant & enabled_ants))
779 return mvm->cfg->non_shared_ant;
780
781 return first_antenna(enabled_ants);
782}
783
784u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
785 struct ieee80211_tx_info *info, u8 ac)
786{
787 __le16 fc = hdr->frame_control;
788 bool mplut_enabled = iwl_mvm_is_mplut_supported(mvm);
789
790 if (info->band != NL80211_BAND_2GHZ)
791 return 0;
792
793 if (unlikely(mvm->bt_tx_prio))
794 return mvm->bt_tx_prio - 1;
795
796 if (likely(ieee80211_is_data(fc))) {
797 if (likely(ieee80211_is_data_qos(fc))) {
798 switch (ac) {
799 case IEEE80211_AC_BE:
800 return mplut_enabled ? 1 : 0;
801 case IEEE80211_AC_VI:
802 return mplut_enabled ? 2 : 3;
803 case IEEE80211_AC_VO:
804 return 3;
805 default:
806 return 0;
807 }
808 } else if (is_multicast_ether_addr(hdr->addr1)) {
809 return 3;
810 } else
811 return 0;
812 } else if (ieee80211_is_mgmt(fc)) {
813 return ieee80211_is_disassoc(fc) ? 0 : 3;
814 } else if (ieee80211_is_ctl(fc)) {
815 /* ignore cfend and cfendack frames as we never send those */
816 return 3;
817 }
818
819 return 0;
820}
821
822void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm)
823{
824 iwl_mvm_bt_coex_notif_handle(mvm);
825}