1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2013-2014, 2018-2020, 2022 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 if (mvm->cfg->bt_shared_single_ant) {
120 rcu_read_unlock();
121 return ret;
122 }
123
124 phy_ctx_id = *((u16 *)chanctx_conf->drv_priv);
125 primary_ch_phy_id = le32_to_cpu(mvm->last_bt_ci_cmd.primary_ch_phy_id);
126 secondary_ch_phy_id =
127 le32_to_cpu(mvm->last_bt_ci_cmd.secondary_ch_phy_id);
128
129 if (primary_ch_phy_id == phy_ctx_id)
130 ret = le32_to_cpu(mvm->last_bt_notif.primary_ch_lut);
131 else if (secondary_ch_phy_id == phy_ctx_id)
132 ret = le32_to_cpu(mvm->last_bt_notif.secondary_ch_lut);
133 /* else - default = TX TX disallowed */
134
135 rcu_read_unlock();
136
137 return ret;
138 }
139
iwl_mvm_send_bt_init_conf(struct iwl_mvm * mvm)140 int iwl_mvm_send_bt_init_conf(struct iwl_mvm *mvm)
141 {
142 struct iwl_bt_coex_cmd bt_cmd = {};
143 u32 mode;
144
145 lockdep_assert_held(&mvm->mutex);
146
147 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) {
148 switch (mvm->bt_force_ant_mode) {
149 case BT_FORCE_ANT_BT:
150 mode = BT_COEX_BT;
151 break;
152 case BT_FORCE_ANT_WIFI:
153 mode = BT_COEX_WIFI;
154 break;
155 default:
156 WARN_ON(1);
157 mode = 0;
158 }
159
160 bt_cmd.mode = cpu_to_le32(mode);
161 goto send_cmd;
162 }
163
164 bt_cmd.mode = cpu_to_le32(BT_COEX_NW);
165
166 if (IWL_MVM_BT_COEX_SYNC2SCO)
167 bt_cmd.enabled_modules |=
168 cpu_to_le32(BT_COEX_SYNC2SCO_ENABLED);
169
170 if (iwl_mvm_is_mplut_supported(mvm))
171 bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_MPLUT_ENABLED);
172
173 bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_HIGH_BAND_RET);
174
175 send_cmd:
176 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
177 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
178
179 return iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, 0, sizeof(bt_cmd), &bt_cmd);
180 }
181
iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm * mvm,u8 sta_id,bool enable)182 static int iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm *mvm, u8 sta_id,
183 bool enable)
184 {
185 struct iwl_bt_coex_reduced_txp_update_cmd cmd = {};
186 struct iwl_mvm_sta *mvmsta;
187 u32 value;
188
189 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
190 if (!mvmsta)
191 return 0;
192
193 /* nothing to do */
194 if (mvmsta->bt_reduced_txpower == enable)
195 return 0;
196
197 value = mvmsta->deflink.sta_id;
198
199 if (enable)
200 value |= BT_REDUCED_TX_POWER_BIT;
201
202 IWL_DEBUG_COEX(mvm, "%sable reduced Tx Power for sta %d\n",
203 enable ? "en" : "dis", sta_id);
204
205 cmd.reduced_txp = cpu_to_le32(value);
206 mvmsta->bt_reduced_txpower = enable;
207
208 return iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_REDUCED_TXP,
209 CMD_ASYNC, sizeof(cmd), &cmd);
210 }
211
212 struct iwl_bt_iterator_data {
213 struct iwl_bt_coex_profile_notif *notif;
214 struct iwl_mvm *mvm;
215 struct ieee80211_chanctx_conf *primary;
216 struct ieee80211_chanctx_conf *secondary;
217 bool primary_ll;
218 u8 primary_load;
219 u8 secondary_load;
220 };
221
222 static inline
iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm * mvm,struct ieee80211_vif * vif,bool enable,int rssi)223 void iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm *mvm,
224 struct ieee80211_vif *vif,
225 bool enable, int rssi)
226 {
227 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
228
229 mvmvif->bf_data.last_bt_coex_event = rssi;
230 mvmvif->bf_data.bt_coex_max_thold =
231 enable ? -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH : 0;
232 mvmvif->bf_data.bt_coex_min_thold =
233 enable ? -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH : 0;
234 }
235
236 #define MVM_COEX_TCM_PERIOD (HZ * 10)
237
iwl_mvm_bt_coex_tcm_based_ci(struct iwl_mvm * mvm,struct iwl_bt_iterator_data * data)238 static void iwl_mvm_bt_coex_tcm_based_ci(struct iwl_mvm *mvm,
239 struct iwl_bt_iterator_data *data)
240 {
241 unsigned long now = jiffies;
242
243 if (!time_after(now, mvm->bt_coex_last_tcm_ts + MVM_COEX_TCM_PERIOD))
244 return;
245
246 mvm->bt_coex_last_tcm_ts = now;
247
248 /* We assume here that we don't have more than 2 vifs on 2.4GHz */
249
250 /* if the primary is low latency, it will stay primary */
251 if (data->primary_ll)
252 return;
253
254 if (data->primary_load >= data->secondary_load)
255 return;
256
257 swap(data->primary, data->secondary);
258 }
259
iwl_mvm_bt_notif_per_link(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_bt_iterator_data * data,unsigned int link_id)260 static void iwl_mvm_bt_notif_per_link(struct iwl_mvm *mvm,
261 struct ieee80211_vif *vif,
262 struct iwl_bt_iterator_data *data,
263 unsigned int link_id)
264 {
265 /* default smps_mode is AUTOMATIC - only used for client modes */
266 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC;
267 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
268 u32 bt_activity_grading, min_ag_for_static_smps;
269 struct ieee80211_chanctx_conf *chanctx_conf;
270 struct iwl_mvm_vif_link_info *link_info;
271 struct ieee80211_bss_conf *link_conf;
272 int ave_rssi;
273
274 lockdep_assert_held(&mvm->mutex);
275
276 link_info = mvmvif->link[link_id];
277 if (!link_info)
278 return;
279
280 link_conf = rcu_dereference(vif->link_conf[link_id]);
281 /* This can happen due to races: if we receive the notification
282 * and have the mutex held, while mac80211 is stuck on our mutex
283 * in the middle of removing the link.
284 */
285 if (!link_conf)
286 return;
287
288 chanctx_conf = rcu_dereference(link_conf->chanctx_conf);
289
290 /* If channel context is invalid or not on 2.4GHz .. */
291 if ((!chanctx_conf ||
292 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ)) {
293 if (vif->type == NL80211_IFTYPE_STATION) {
294 /* ... relax constraints and disable rssi events */
295 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
296 smps_mode, link_id);
297 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id,
298 false);
299 /* FIXME: should this be per link? */
300 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
301 }
302 return;
303 }
304
305 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2))
306 min_ag_for_static_smps = BT_VERY_HIGH_TRAFFIC;
307 else
308 min_ag_for_static_smps = BT_HIGH_TRAFFIC;
309
310 bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading);
311 if (bt_activity_grading >= min_ag_for_static_smps)
312 smps_mode = IEEE80211_SMPS_STATIC;
313 else if (bt_activity_grading >= BT_LOW_TRAFFIC)
314 smps_mode = IEEE80211_SMPS_DYNAMIC;
315
316 /* relax SMPS constraints for next association */
317 if (!vif->cfg.assoc)
318 smps_mode = IEEE80211_SMPS_AUTOMATIC;
319
320 if (link_info->phy_ctxt &&
321 (mvm->last_bt_notif.rrc_status & BIT(link_info->phy_ctxt->id)))
322 smps_mode = IEEE80211_SMPS_AUTOMATIC;
323
324 IWL_DEBUG_COEX(data->mvm,
325 "mac %d link %d: bt_activity_grading %d smps_req %d\n",
326 mvmvif->id, link_info->fw_link_id,
327 bt_activity_grading, smps_mode);
328
329 if (vif->type == NL80211_IFTYPE_STATION)
330 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
331 smps_mode, link_id);
332
333 /* low latency is always primary */
334 if (iwl_mvm_vif_low_latency(mvmvif)) {
335 data->primary_ll = true;
336
337 data->secondary = data->primary;
338 data->primary = chanctx_conf;
339 }
340
341 if (vif->type == NL80211_IFTYPE_AP) {
342 if (!mvmvif->ap_ibss_active)
343 return;
344
345 if (chanctx_conf == data->primary)
346 return;
347
348 if (!data->primary_ll) {
349 /*
350 * downgrade the current primary no matter what its
351 * type is.
352 */
353 data->secondary = data->primary;
354 data->primary = chanctx_conf;
355 } else {
356 /* there is low latency vif - we will be secondary */
357 data->secondary = chanctx_conf;
358 }
359
360 /* FIXME: TCM load per interface? or need something per link? */
361 if (data->primary == chanctx_conf)
362 data->primary_load = mvm->tcm.result.load[mvmvif->id];
363 else if (data->secondary == chanctx_conf)
364 data->secondary_load = mvm->tcm.result.load[mvmvif->id];
365 return;
366 }
367
368 /*
369 * STA / P2P Client, try to be primary if first vif. If we are in low
370 * latency mode, we are already in primary and just don't do much
371 */
372 if (!data->primary || data->primary == chanctx_conf)
373 data->primary = chanctx_conf;
374 else if (!data->secondary)
375 /* if secondary is not NULL, it might be a GO */
376 data->secondary = chanctx_conf;
377
378 /* FIXME: TCM load per interface? or need something per link? */
379 if (data->primary == chanctx_conf)
380 data->primary_load = mvm->tcm.result.load[mvmvif->id];
381 else if (data->secondary == chanctx_conf)
382 data->secondary_load = mvm->tcm.result.load[mvmvif->id];
383 /*
384 * don't reduce the Tx power if one of these is true:
385 * we are in LOOSE
386 * single share antenna product
387 * BT is inactive
388 * we are not associated
389 */
390 if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT ||
391 mvm->cfg->bt_shared_single_ant || !vif->cfg.assoc ||
392 le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) {
393 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, false);
394 /* FIXME: should this be per link? */
395 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
396 return;
397 }
398
399 /* try to get the avg rssi from fw */
400 ave_rssi = mvmvif->bf_data.ave_beacon_signal;
401
402 /* if the RSSI isn't valid, fake it is very low */
403 if (!ave_rssi)
404 ave_rssi = -100;
405 if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) {
406 if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id,
407 true))
408 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
409 } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) {
410 if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id,
411 false))
412 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
413 }
414
415 /* Begin to monitor the RSSI: it may influence the reduced Tx power */
416 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi);
417 }
418
419 /* must be called under rcu_read_lock */
iwl_mvm_bt_notif_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)420 static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac,
421 struct ieee80211_vif *vif)
422 {
423 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
424 struct iwl_bt_iterator_data *data = _data;
425 struct iwl_mvm *mvm = data->mvm;
426 unsigned int link_id;
427
428 lockdep_assert_held(&mvm->mutex);
429
430 switch (vif->type) {
431 case NL80211_IFTYPE_STATION:
432 break;
433 case NL80211_IFTYPE_AP:
434 if (!mvmvif->ap_ibss_active)
435 return;
436 break;
437 default:
438 return;
439 }
440
441 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++)
442 iwl_mvm_bt_notif_per_link(mvm, vif, data, link_id);
443 }
444
iwl_mvm_bt_coex_notif_handle(struct iwl_mvm * mvm)445 static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm)
446 {
447 struct iwl_bt_iterator_data data = {
448 .mvm = mvm,
449 .notif = &mvm->last_bt_notif,
450 };
451 struct iwl_bt_coex_ci_cmd cmd = {};
452 u8 ci_bw_idx;
453
454 /* Ignore updates if we are in force mode */
455 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
456 return;
457
458 rcu_read_lock();
459 ieee80211_iterate_active_interfaces_atomic(
460 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
461 iwl_mvm_bt_notif_iterator, &data);
462
463 iwl_mvm_bt_coex_tcm_based_ci(mvm, &data);
464
465 if (data.primary) {
466 struct ieee80211_chanctx_conf *chan = data.primary;
467 if (WARN_ON(!chan->def.chan)) {
468 rcu_read_unlock();
469 return;
470 }
471
472 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
473 ci_bw_idx = 0;
474 } else {
475 if (chan->def.center_freq1 >
476 chan->def.chan->center_freq)
477 ci_bw_idx = 2;
478 else
479 ci_bw_idx = 1;
480 }
481
482 cmd.bt_primary_ci =
483 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
484 cmd.primary_ch_phy_id =
485 cpu_to_le32(*((u16 *)data.primary->drv_priv));
486 }
487
488 if (data.secondary) {
489 struct ieee80211_chanctx_conf *chan = data.secondary;
490 if (WARN_ON(!data.secondary->def.chan)) {
491 rcu_read_unlock();
492 return;
493 }
494
495 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
496 ci_bw_idx = 0;
497 } else {
498 if (chan->def.center_freq1 >
499 chan->def.chan->center_freq)
500 ci_bw_idx = 2;
501 else
502 ci_bw_idx = 1;
503 }
504
505 cmd.bt_secondary_ci =
506 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
507 cmd.secondary_ch_phy_id =
508 cpu_to_le32(*((u16 *)data.secondary->drv_priv));
509 }
510
511 rcu_read_unlock();
512
513 /* Don't spam the fw with the same command over and over */
514 if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) {
515 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0,
516 sizeof(cmd), &cmd))
517 IWL_ERR(mvm, "Failed to send BT_CI cmd\n");
518 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd));
519 }
520 }
521
iwl_mvm_rx_bt_coex_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)522 void iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm,
523 struct iwl_rx_cmd_buffer *rxb)
524 {
525 struct iwl_rx_packet *pkt = rxb_addr(rxb);
526 struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data;
527
528 IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n");
529 IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance);
530 IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n",
531 le32_to_cpu(notif->primary_ch_lut));
532 IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n",
533 le32_to_cpu(notif->secondary_ch_lut));
534 IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n",
535 le32_to_cpu(notif->bt_activity_grading));
536
537 /* remember this notification for future use: rssi fluctuations */
538 memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif));
539
540 iwl_mvm_bt_coex_notif_handle(mvm);
541 }
542
iwl_mvm_bt_rssi_event(struct iwl_mvm * mvm,struct ieee80211_vif * vif,enum ieee80211_rssi_event_data rssi_event)543 void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
544 enum ieee80211_rssi_event_data rssi_event)
545 {
546 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
547 int ret;
548
549 lockdep_assert_held(&mvm->mutex);
550
551 /* Ignore updates if we are in force mode */
552 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
553 return;
554
555 /*
556 * Rssi update while not associated - can happen since the statistics
557 * are handled asynchronously
558 */
559 if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA)
560 return;
561
562 /* No BT - reports should be disabled */
563 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF)
564 return;
565
566 IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid,
567 rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW");
568
569 /*
570 * Check if rssi is good enough for reduced Tx power, but not in loose
571 * scheme.
572 */
573 if (rssi_event == RSSI_EVENT_LOW || mvm->cfg->bt_shared_single_ant ||
574 iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT)
575 ret = iwl_mvm_bt_coex_reduced_txp(mvm,
576 mvmvif->deflink.ap_sta_id,
577 false);
578 else
579 ret = iwl_mvm_bt_coex_reduced_txp(mvm,
580 mvmvif->deflink.ap_sta_id,
581 true);
582
583 if (ret)
584 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n");
585 }
586
587 #define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000)
588 #define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200)
589
iwl_mvm_coex_agg_time_limit(struct iwl_mvm * mvm,struct ieee80211_sta * sta)590 u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm,
591 struct ieee80211_sta *sta)
592 {
593 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
594 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
595 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt;
596 enum iwl_bt_coex_lut_type lut_type;
597
598 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id))
599 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
600
601 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
602 BT_HIGH_TRAFFIC)
603 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
604
605 lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
606
607 if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT)
608 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
609
610 /* tight coex, high bt traffic, reduce AGG time limit */
611 return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT;
612 }
613
iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm * mvm,struct ieee80211_sta * sta)614 bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm,
615 struct ieee80211_sta *sta)
616 {
617 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
618 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
619 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt;
620 enum iwl_bt_coex_lut_type lut_type;
621
622 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id))
623 return true;
624
625 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
626 BT_HIGH_TRAFFIC)
627 return true;
628
629 /*
630 * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas
631 * since BT is already killed.
632 * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while
633 * we Tx.
634 * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO.
635 */
636 lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
637 return lut_type != BT_COEX_LOOSE_LUT;
638 }
639
iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm * mvm,u8 ant)640 bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant)
641 {
642 /* there is no other antenna, shared antenna is always available */
643 if (mvm->cfg->bt_shared_single_ant)
644 return true;
645
646 if (ant & mvm->cfg->non_shared_ant)
647 return true;
648
649 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
650 BT_HIGH_TRAFFIC;
651 }
652
iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm * mvm)653 bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm)
654 {
655 /* there is no other antenna, shared antenna is always available */
656 if (mvm->cfg->bt_shared_single_ant)
657 return true;
658
659 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC;
660 }
661
iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm * mvm,enum nl80211_band band)662 bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm,
663 enum nl80211_band band)
664 {
665 u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading);
666
667 if (band != NL80211_BAND_2GHZ)
668 return false;
669
670 return bt_activity >= BT_LOW_TRAFFIC;
671 }
672
iwl_mvm_bt_coex_get_single_ant_msk(struct iwl_mvm * mvm,u8 enabled_ants)673 u8 iwl_mvm_bt_coex_get_single_ant_msk(struct iwl_mvm *mvm, u8 enabled_ants)
674 {
675 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2) &&
676 (mvm->cfg->non_shared_ant & enabled_ants))
677 return mvm->cfg->non_shared_ant;
678
679 return first_antenna(enabled_ants);
680 }
681
iwl_mvm_bt_coex_tx_prio(struct iwl_mvm * mvm,struct ieee80211_hdr * hdr,struct ieee80211_tx_info * info,u8 ac)682 u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
683 struct ieee80211_tx_info *info, u8 ac)
684 {
685 __le16 fc = hdr->frame_control;
686 bool mplut_enabled = iwl_mvm_is_mplut_supported(mvm);
687
688 if (info->band != NL80211_BAND_2GHZ)
689 return 0;
690
691 if (unlikely(mvm->bt_tx_prio))
692 return mvm->bt_tx_prio - 1;
693
694 if (likely(ieee80211_is_data(fc))) {
695 if (likely(ieee80211_is_data_qos(fc))) {
696 switch (ac) {
697 case IEEE80211_AC_BE:
698 return mplut_enabled ? 1 : 0;
699 case IEEE80211_AC_VI:
700 return mplut_enabled ? 2 : 3;
701 case IEEE80211_AC_VO:
702 return 3;
703 default:
704 return 0;
705 }
706 } else if (is_multicast_ether_addr(hdr->addr1)) {
707 return 3;
708 } else
709 return 0;
710 } else if (ieee80211_is_mgmt(fc)) {
711 return ieee80211_is_disassoc(fc) ? 0 : 3;
712 } else if (ieee80211_is_ctl(fc)) {
713 /* ignore cfend and cfendack frames as we never send those */
714 return 3;
715 }
716
717 return 0;
718 }
719
iwl_mvm_bt_coex_vif_change(struct iwl_mvm * mvm)720 void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm)
721 {
722 iwl_mvm_bt_coex_notif_handle(mvm);
723 }
724