1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2013-2014, 2018-2020, 2022-2025 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*/
16 static 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
91 static enum iwl_bt_coex_lut_type
iwl_get_coex_type(struct iwl_mvm * mvm,const struct ieee80211_vif * vif)92 iwl_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
iwl_mvm_send_bt_init_conf(struct iwl_mvm * mvm)135 int 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
170 send_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
iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm * mvm,u8 sta_id,bool enable)177 static 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->mac_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
210 struct iwl_bt_iterator_data {
211 struct iwl_bt_coex_prof_old_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
220 static inline
iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm * mvm,struct iwl_mvm_vif_link_info * link_info,bool enable,int rssi)221 void iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm *mvm,
222 struct iwl_mvm_vif_link_info *link_info,
223 bool enable, int rssi)
224 {
225 link_info->bf_data.last_bt_coex_event = rssi;
226 link_info->bf_data.bt_coex_max_thold =
227 enable ? -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH : 0;
228 link_info->bf_data.bt_coex_min_thold =
229 enable ? -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH : 0;
230 }
231
232 #define MVM_COEX_TCM_PERIOD (HZ * 10)
233
iwl_mvm_bt_coex_tcm_based_ci(struct iwl_mvm * mvm,struct iwl_bt_iterator_data * data)234 static void iwl_mvm_bt_coex_tcm_based_ci(struct iwl_mvm *mvm,
235 struct iwl_bt_iterator_data *data)
236 {
237 unsigned long now = jiffies;
238
239 if (!time_after(now, mvm->bt_coex_last_tcm_ts + MVM_COEX_TCM_PERIOD))
240 return;
241
242 mvm->bt_coex_last_tcm_ts = now;
243
244 /* We assume here that we don't have more than 2 vifs on 2.4GHz */
245
246 /* if the primary is low latency, it will stay primary */
247 if (data->primary_ll)
248 return;
249
250 if (data->primary_load >= data->secondary_load)
251 return;
252
253 swap(data->primary, data->secondary);
254 }
255
iwl_mvm_bt_notif_per_link(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_bt_iterator_data * data,unsigned int link_id)256 static void iwl_mvm_bt_notif_per_link(struct iwl_mvm *mvm,
257 struct ieee80211_vif *vif,
258 struct iwl_bt_iterator_data *data,
259 unsigned int link_id)
260 {
261 /* default smps_mode is AUTOMATIC - only used for client modes */
262 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC;
263 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
264 u32 bt_activity_grading, min_ag_for_static_smps;
265 struct ieee80211_chanctx_conf *chanctx_conf;
266 struct iwl_mvm_vif_link_info *link_info;
267 struct ieee80211_bss_conf *link_conf;
268 int ave_rssi;
269
270 lockdep_assert_held(&mvm->mutex);
271
272 link_info = mvmvif->link[link_id];
273 if (!link_info)
274 return;
275
276 link_conf = rcu_dereference(vif->link_conf[link_id]);
277 /* This can happen due to races: if we receive the notification
278 * and have the mutex held, while mac80211 is stuck on our mutex
279 * in the middle of removing the link.
280 */
281 if (!link_conf)
282 return;
283
284 chanctx_conf = rcu_dereference(link_conf->chanctx_conf);
285
286 /* If channel context is invalid or not on 2.4GHz .. */
287 if ((!chanctx_conf ||
288 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ)) {
289 if (vif->type == NL80211_IFTYPE_STATION) {
290 /* ... relax constraints and disable rssi events */
291 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
292 smps_mode, link_id);
293 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id,
294 false);
295 iwl_mvm_bt_coex_enable_rssi_event(mvm, link_info, false,
296 0);
297 }
298 return;
299 }
300
301 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2))
302 min_ag_for_static_smps = BT_VERY_HIGH_TRAFFIC;
303 else
304 min_ag_for_static_smps = BT_HIGH_TRAFFIC;
305
306 bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading);
307 if (bt_activity_grading >= min_ag_for_static_smps)
308 smps_mode = IEEE80211_SMPS_STATIC;
309 else if (bt_activity_grading >= BT_LOW_TRAFFIC)
310 smps_mode = IEEE80211_SMPS_DYNAMIC;
311
312 /* relax SMPS constraints for next association */
313 if (!vif->cfg.assoc)
314 smps_mode = IEEE80211_SMPS_AUTOMATIC;
315
316 if (link_info->phy_ctxt &&
317 (mvm->last_bt_notif.rrc_status & BIT(link_info->phy_ctxt->id)))
318 smps_mode = IEEE80211_SMPS_AUTOMATIC;
319
320 IWL_DEBUG_COEX(data->mvm,
321 "mac %d link %d: bt_activity_grading %d smps_req %d\n",
322 mvmvif->id, link_info->fw_link_id,
323 bt_activity_grading, smps_mode);
324
325 if (vif->type == NL80211_IFTYPE_STATION)
326 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
327 smps_mode, link_id);
328
329 /* low latency is always primary */
330 if (iwl_mvm_vif_low_latency(mvmvif)) {
331 data->primary_ll = true;
332
333 data->secondary = data->primary;
334 data->primary = chanctx_conf;
335 }
336
337 if (vif->type == NL80211_IFTYPE_AP) {
338 if (!mvmvif->ap_ibss_active)
339 return;
340
341 if (chanctx_conf == data->primary)
342 return;
343
344 if (!data->primary_ll) {
345 /*
346 * downgrade the current primary no matter what its
347 * type is.
348 */
349 data->secondary = data->primary;
350 data->primary = chanctx_conf;
351 } else {
352 /* there is low latency vif - we will be secondary */
353 data->secondary = chanctx_conf;
354 }
355
356 /* FIXME: TCM load per interface? or need something per link? */
357 if (data->primary == chanctx_conf)
358 data->primary_load = mvm->tcm.result.load[mvmvif->id];
359 else if (data->secondary == chanctx_conf)
360 data->secondary_load = mvm->tcm.result.load[mvmvif->id];
361 return;
362 }
363
364 /*
365 * STA / P2P Client, try to be primary if first vif. If we are in low
366 * latency mode, we are already in primary and just don't do much
367 */
368 if (!data->primary || data->primary == chanctx_conf)
369 data->primary = chanctx_conf;
370 else if (!data->secondary)
371 /* if secondary is not NULL, it might be a GO */
372 data->secondary = chanctx_conf;
373
374 /* FIXME: TCM load per interface? or need something per link? */
375 if (data->primary == chanctx_conf)
376 data->primary_load = mvm->tcm.result.load[mvmvif->id];
377 else if (data->secondary == chanctx_conf)
378 data->secondary_load = mvm->tcm.result.load[mvmvif->id];
379 /*
380 * don't reduce the Tx power if one of these is true:
381 * we are in LOOSE
382 * BT is inactive
383 * we are not associated
384 */
385 if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT ||
386 le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF ||
387 !vif->cfg.assoc) {
388 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, false);
389 iwl_mvm_bt_coex_enable_rssi_event(mvm, link_info, false, 0);
390 return;
391 }
392
393 /* try to get the avg rssi from fw */
394 ave_rssi = link_info->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, link_info, true, ave_rssi);
411 }
412
413 /* must be called under rcu_read_lock */
iwl_mvm_bt_notif_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)414 static 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
iwl_mvm_bt_coex_notif_handle(struct iwl_mvm * mvm)439 static 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 if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
458 rcu_read_unlock();
459 return;
460 }
461
462 iwl_mvm_bt_coex_tcm_based_ci(mvm, &data);
463
464 if (data.primary) {
465 struct ieee80211_chanctx_conf *chan = data.primary;
466 if (WARN_ON(!chan->def.chan)) {
467 rcu_read_unlock();
468 return;
469 }
470
471 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
472 ci_bw_idx = 0;
473 } else {
474 if (chan->def.center_freq1 >
475 chan->def.chan->center_freq)
476 ci_bw_idx = 2;
477 else
478 ci_bw_idx = 1;
479 }
480
481 cmd.bt_primary_ci =
482 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
483 cmd.primary_ch_phy_id =
484 cpu_to_le32(*((u16 *)data.primary->drv_priv));
485 }
486
487 if (data.secondary) {
488 struct ieee80211_chanctx_conf *chan = data.secondary;
489 if (WARN_ON(!data.secondary->def.chan)) {
490 rcu_read_unlock();
491 return;
492 }
493
494 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
495 ci_bw_idx = 0;
496 } else {
497 if (chan->def.center_freq1 >
498 chan->def.chan->center_freq)
499 ci_bw_idx = 2;
500 else
501 ci_bw_idx = 1;
502 }
503
504 cmd.bt_secondary_ci =
505 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
506 cmd.secondary_ch_phy_id =
507 cpu_to_le32(*((u16 *)data.secondary->drv_priv));
508 }
509
510 rcu_read_unlock();
511
512 /* Don't spam the fw with the same command over and over */
513 if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) {
514 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0,
515 sizeof(cmd), &cmd))
516 IWL_ERR(mvm, "Failed to send BT_CI cmd\n");
517 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd));
518 }
519 }
520
iwl_mvm_rx_bt_coex_old_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)521 void iwl_mvm_rx_bt_coex_old_notif(struct iwl_mvm *mvm,
522 struct iwl_rx_cmd_buffer *rxb)
523 {
524 struct iwl_rx_packet *pkt = rxb_addr(rxb);
525 struct iwl_bt_coex_prof_old_notif *notif = (void *)pkt->data;
526
527 IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n");
528 IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance);
529 IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n",
530 le32_to_cpu(notif->primary_ch_lut));
531 IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n",
532 le32_to_cpu(notif->secondary_ch_lut));
533 IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n",
534 le32_to_cpu(notif->bt_activity_grading));
535
536 /* remember this notification for future use: rssi fluctuations */
537 memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif));
538
539 iwl_mvm_bt_coex_notif_handle(mvm);
540 }
541
iwl_mvm_bt_rssi_event(struct iwl_mvm * mvm,struct ieee80211_vif * vif,enum ieee80211_rssi_event_data rssi_event)542 void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
543 enum ieee80211_rssi_event_data rssi_event)
544 {
545 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
546 int ret;
547
548 lockdep_assert_held(&mvm->mutex);
549
550 /* Ignore updates if we are in force mode */
551 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
552 return;
553
554 /*
555 * Rssi update while not associated - can happen since the statistics
556 * are handled asynchronously
557 */
558 if (mvmvif->deflink.ap_sta_id == IWL_INVALID_STA)
559 return;
560
561 /* No BT - reports should be disabled */
562 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF)
563 return;
564
565 IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid,
566 rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW");
567
568 /*
569 * Check if rssi is good enough for reduced Tx power, but not in loose
570 * scheme.
571 */
572 if (rssi_event == RSSI_EVENT_LOW ||
573 iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT)
574 ret = iwl_mvm_bt_coex_reduced_txp(mvm,
575 mvmvif->deflink.ap_sta_id,
576 false);
577 else
578 ret = iwl_mvm_bt_coex_reduced_txp(mvm,
579 mvmvif->deflink.ap_sta_id,
580 true);
581
582 if (ret)
583 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n");
584 }
585
586 #define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000)
587 #define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200)
588
iwl_mvm_coex_agg_time_limit(struct iwl_mvm * mvm,struct ieee80211_sta * sta)589 u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm,
590 struct ieee80211_sta *sta)
591 {
592 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
593 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
594 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt;
595 enum iwl_bt_coex_lut_type lut_type;
596
597 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id))
598 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
599
600 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
601 BT_HIGH_TRAFFIC)
602 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
603
604 lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
605
606 if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT)
607 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
608
609 /* tight coex, high bt traffic, reduce AGG time limit */
610 return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT;
611 }
612
iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm * mvm,struct ieee80211_sta * sta)613 bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm,
614 struct ieee80211_sta *sta)
615 {
616 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
617 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
618 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt;
619 enum iwl_bt_coex_lut_type lut_type;
620
621 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id))
622 return true;
623
624 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
625 BT_HIGH_TRAFFIC)
626 return true;
627
628 /*
629 * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas
630 * since BT is already killed.
631 * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while
632 * we Tx.
633 * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO.
634 */
635 lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
636 return lut_type != BT_COEX_LOOSE_LUT;
637 }
638
iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm * mvm,u8 ant)639 bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant)
640 {
641 if (ant & mvm->cfg->non_shared_ant)
642 return true;
643
644 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
645 BT_HIGH_TRAFFIC;
646 }
647
iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm * mvm)648 bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm)
649 {
650 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC;
651 }
652
iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm * mvm,enum nl80211_band band)653 bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm,
654 enum nl80211_band band)
655 {
656 u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading);
657
658 if (band != NL80211_BAND_2GHZ)
659 return false;
660
661 return bt_activity >= BT_LOW_TRAFFIC;
662 }
663
iwl_mvm_bt_coex_get_single_ant_msk(struct iwl_mvm * mvm,u8 enabled_ants)664 u8 iwl_mvm_bt_coex_get_single_ant_msk(struct iwl_mvm *mvm, u8 enabled_ants)
665 {
666 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2) &&
667 (mvm->cfg->non_shared_ant & enabled_ants))
668 return mvm->cfg->non_shared_ant;
669
670 return first_antenna(enabled_ants);
671 }
672
iwl_mvm_bt_coex_tx_prio(struct iwl_mvm * mvm,struct ieee80211_hdr * hdr,struct ieee80211_tx_info * info,u8 ac)673 u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
674 struct ieee80211_tx_info *info, u8 ac)
675 {
676 __le16 fc = hdr->frame_control;
677 bool mplut_enabled = iwl_mvm_is_mplut_supported(mvm);
678
679 if (info->band != NL80211_BAND_2GHZ)
680 return 0;
681
682 if (unlikely(mvm->bt_tx_prio))
683 return mvm->bt_tx_prio - 1;
684
685 if (likely(ieee80211_is_data(fc))) {
686 if (likely(ieee80211_is_data_qos(fc))) {
687 switch (ac) {
688 case IEEE80211_AC_BE:
689 return mplut_enabled ? 1 : 0;
690 case IEEE80211_AC_VI:
691 return mplut_enabled ? 2 : 3;
692 case IEEE80211_AC_VO:
693 return 3;
694 default:
695 return 0;
696 }
697 } else if (is_multicast_ether_addr(hdr->addr1)) {
698 return 3;
699 } else
700 return 0;
701 } else if (ieee80211_is_mgmt(fc)) {
702 return ieee80211_is_disassoc(fc) ? 0 : 3;
703 } else if (ieee80211_is_ctl(fc)) {
704 /* ignore cfend and cfendack frames as we never send those */
705 return 3;
706 }
707
708 return 0;
709 }
710
iwl_mvm_bt_coex_vif_change(struct iwl_mvm * mvm)711 void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm)
712 {
713 iwl_mvm_bt_coex_notif_handle(mvm);
714 }
715