1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2013-2014, 2018-2020 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->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->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
260 /* must be called under rcu_read_lock */
iwl_mvm_bt_notif_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)261 static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac,
262 struct ieee80211_vif *vif)
263 {
264 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
265 struct iwl_bt_iterator_data *data = _data;
266 struct iwl_mvm *mvm = data->mvm;
267 struct ieee80211_chanctx_conf *chanctx_conf;
268 /* default smps_mode is AUTOMATIC - only used for client modes */
269 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC;
270 u32 bt_activity_grading, min_ag_for_static_smps;
271 int ave_rssi;
272
273 lockdep_assert_held(&mvm->mutex);
274
275 switch (vif->type) {
276 case NL80211_IFTYPE_STATION:
277 break;
278 case NL80211_IFTYPE_AP:
279 if (!mvmvif->ap_ibss_active)
280 return;
281 break;
282 default:
283 return;
284 }
285
286 chanctx_conf = rcu_dereference(vif->chanctx_conf);
287
288 /* If channel context is invalid or not on 2.4GHz .. */
289 if ((!chanctx_conf ||
290 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ)) {
291 if (vif->type == NL80211_IFTYPE_STATION) {
292 /* ... relax constraints and disable rssi events */
293 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
294 smps_mode);
295 iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id,
296 false);
297 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
298 }
299 return;
300 }
301
302 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2))
303 min_ag_for_static_smps = BT_VERY_HIGH_TRAFFIC;
304 else
305 min_ag_for_static_smps = BT_HIGH_TRAFFIC;
306
307 bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading);
308 if (bt_activity_grading >= min_ag_for_static_smps)
309 smps_mode = IEEE80211_SMPS_STATIC;
310 else if (bt_activity_grading >= BT_LOW_TRAFFIC)
311 smps_mode = IEEE80211_SMPS_DYNAMIC;
312
313 /* relax SMPS constraints for next association */
314 if (!vif->bss_conf.assoc)
315 smps_mode = IEEE80211_SMPS_AUTOMATIC;
316
317 if (mvmvif->phy_ctxt &&
318 (mvm->last_bt_notif.rrc_status & BIT(mvmvif->phy_ctxt->id)))
319 smps_mode = IEEE80211_SMPS_AUTOMATIC;
320
321 IWL_DEBUG_COEX(data->mvm,
322 "mac %d: bt_activity_grading %d smps_req %d\n",
323 mvmvif->id, 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);
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 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 if (data->primary == chanctx_conf)
374 data->primary_load = mvm->tcm.result.load[mvmvif->id];
375 else if (data->secondary == chanctx_conf)
376 data->secondary_load = mvm->tcm.result.load[mvmvif->id];
377 /*
378 * don't reduce the Tx power if one of these is true:
379 * we are in LOOSE
380 * single share antenna product
381 * BT is inactive
382 * we are not associated
383 */
384 if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT ||
385 mvm->cfg->bt_shared_single_ant || !vif->bss_conf.assoc ||
386 le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) {
387 iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false);
388 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
389 return;
390 }
391
392 /* try to get the avg rssi from fw */
393 ave_rssi = mvmvif->bf_data.ave_beacon_signal;
394
395 /* if the RSSI isn't valid, fake it is very low */
396 if (!ave_rssi)
397 ave_rssi = -100;
398 if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) {
399 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true))
400 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
401 } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) {
402 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false))
403 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
404 }
405
406 /* Begin to monitor the RSSI: it may influence the reduced Tx power */
407 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi);
408 }
409
iwl_mvm_bt_coex_notif_handle(struct iwl_mvm * mvm)410 static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm)
411 {
412 struct iwl_bt_iterator_data data = {
413 .mvm = mvm,
414 .notif = &mvm->last_bt_notif,
415 };
416 struct iwl_bt_coex_ci_cmd cmd = {};
417 u8 ci_bw_idx;
418
419 /* Ignore updates if we are in force mode */
420 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
421 return;
422
423 rcu_read_lock();
424 ieee80211_iterate_active_interfaces_atomic(
425 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
426 iwl_mvm_bt_notif_iterator, &data);
427
428 iwl_mvm_bt_coex_tcm_based_ci(mvm, &data);
429
430 if (data.primary) {
431 struct ieee80211_chanctx_conf *chan = data.primary;
432 if (WARN_ON(!chan->def.chan)) {
433 rcu_read_unlock();
434 return;
435 }
436
437 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
438 ci_bw_idx = 0;
439 } else {
440 if (chan->def.center_freq1 >
441 chan->def.chan->center_freq)
442 ci_bw_idx = 2;
443 else
444 ci_bw_idx = 1;
445 }
446
447 cmd.bt_primary_ci =
448 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
449 cmd.primary_ch_phy_id =
450 cpu_to_le32(*((u16 *)data.primary->drv_priv));
451 }
452
453 if (data.secondary) {
454 struct ieee80211_chanctx_conf *chan = data.secondary;
455 if (WARN_ON(!data.secondary->def.chan)) {
456 rcu_read_unlock();
457 return;
458 }
459
460 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
461 ci_bw_idx = 0;
462 } else {
463 if (chan->def.center_freq1 >
464 chan->def.chan->center_freq)
465 ci_bw_idx = 2;
466 else
467 ci_bw_idx = 1;
468 }
469
470 cmd.bt_secondary_ci =
471 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
472 cmd.secondary_ch_phy_id =
473 cpu_to_le32(*((u16 *)data.secondary->drv_priv));
474 }
475
476 rcu_read_unlock();
477
478 /* Don't spam the fw with the same command over and over */
479 if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) {
480 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0,
481 sizeof(cmd), &cmd))
482 IWL_ERR(mvm, "Failed to send BT_CI cmd\n");
483 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd));
484 }
485 }
486
iwl_mvm_rx_bt_coex_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)487 void iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm,
488 struct iwl_rx_cmd_buffer *rxb)
489 {
490 struct iwl_rx_packet *pkt = rxb_addr(rxb);
491 struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data;
492
493 IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n");
494 IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance);
495 IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n",
496 le32_to_cpu(notif->primary_ch_lut));
497 IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n",
498 le32_to_cpu(notif->secondary_ch_lut));
499 IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n",
500 le32_to_cpu(notif->bt_activity_grading));
501
502 /* remember this notification for future use: rssi fluctuations */
503 memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif));
504
505 iwl_mvm_bt_coex_notif_handle(mvm);
506 }
507
iwl_mvm_bt_rssi_event(struct iwl_mvm * mvm,struct ieee80211_vif * vif,enum ieee80211_rssi_event_data rssi_event)508 void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
509 enum ieee80211_rssi_event_data rssi_event)
510 {
511 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
512 int ret;
513
514 lockdep_assert_held(&mvm->mutex);
515
516 /* Ignore updates if we are in force mode */
517 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
518 return;
519
520 /*
521 * Rssi update while not associated - can happen since the statistics
522 * are handled asynchronously
523 */
524 if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA)
525 return;
526
527 /* No BT - reports should be disabled */
528 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF)
529 return;
530
531 IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid,
532 rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW");
533
534 /*
535 * Check if rssi is good enough for reduced Tx power, but not in loose
536 * scheme.
537 */
538 if (rssi_event == RSSI_EVENT_LOW || mvm->cfg->bt_shared_single_ant ||
539 iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT)
540 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id,
541 false);
542 else
543 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true);
544
545 if (ret)
546 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n");
547 }
548
549 #define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000)
550 #define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200)
551
iwl_mvm_coex_agg_time_limit(struct iwl_mvm * mvm,struct ieee80211_sta * sta)552 u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm,
553 struct ieee80211_sta *sta)
554 {
555 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
556 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
557 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->phy_ctxt;
558 enum iwl_bt_coex_lut_type lut_type;
559
560 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id))
561 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
562
563 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
564 BT_HIGH_TRAFFIC)
565 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
566
567 lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
568
569 if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT)
570 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
571
572 /* tight coex, high bt traffic, reduce AGG time limit */
573 return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT;
574 }
575
iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm * mvm,struct ieee80211_sta * sta)576 bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm,
577 struct ieee80211_sta *sta)
578 {
579 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
580 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
581 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->phy_ctxt;
582 enum iwl_bt_coex_lut_type lut_type;
583
584 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id))
585 return true;
586
587 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
588 BT_HIGH_TRAFFIC)
589 return true;
590
591 /*
592 * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas
593 * since BT is already killed.
594 * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while
595 * we Tx.
596 * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO.
597 */
598 lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
599 return lut_type != BT_COEX_LOOSE_LUT;
600 }
601
iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm * mvm,u8 ant)602 bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant)
603 {
604 /* there is no other antenna, shared antenna is always available */
605 if (mvm->cfg->bt_shared_single_ant)
606 return true;
607
608 if (ant & mvm->cfg->non_shared_ant)
609 return true;
610
611 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
612 BT_HIGH_TRAFFIC;
613 }
614
iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm * mvm)615 bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm)
616 {
617 /* there is no other antenna, shared antenna is always available */
618 if (mvm->cfg->bt_shared_single_ant)
619 return true;
620
621 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC;
622 }
623
iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm * mvm,enum nl80211_band band)624 bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm,
625 enum nl80211_band band)
626 {
627 u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading);
628
629 if (band != NL80211_BAND_2GHZ)
630 return false;
631
632 return bt_activity >= BT_LOW_TRAFFIC;
633 }
634
iwl_mvm_bt_coex_get_single_ant_msk(struct iwl_mvm * mvm,u8 enabled_ants)635 u8 iwl_mvm_bt_coex_get_single_ant_msk(struct iwl_mvm *mvm, u8 enabled_ants)
636 {
637 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2) &&
638 (mvm->cfg->non_shared_ant & enabled_ants))
639 return mvm->cfg->non_shared_ant;
640
641 return first_antenna(enabled_ants);
642 }
643
iwl_mvm_bt_coex_tx_prio(struct iwl_mvm * mvm,struct ieee80211_hdr * hdr,struct ieee80211_tx_info * info,u8 ac)644 u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
645 struct ieee80211_tx_info *info, u8 ac)
646 {
647 __le16 fc = hdr->frame_control;
648 bool mplut_enabled = iwl_mvm_is_mplut_supported(mvm);
649
650 if (info->band != NL80211_BAND_2GHZ)
651 return 0;
652
653 if (unlikely(mvm->bt_tx_prio))
654 return mvm->bt_tx_prio - 1;
655
656 if (likely(ieee80211_is_data(fc))) {
657 if (likely(ieee80211_is_data_qos(fc))) {
658 switch (ac) {
659 case IEEE80211_AC_BE:
660 return mplut_enabled ? 1 : 0;
661 case IEEE80211_AC_VI:
662 return mplut_enabled ? 2 : 3;
663 case IEEE80211_AC_VO:
664 return 3;
665 default:
666 return 0;
667 }
668 } else if (is_multicast_ether_addr(hdr->addr1)) {
669 return 3;
670 } else
671 return 0;
672 } else if (ieee80211_is_mgmt(fc)) {
673 return ieee80211_is_disassoc(fc) ? 0 : 3;
674 } else if (ieee80211_is_ctl(fc)) {
675 /* ignore cfend and cfendack frames as we never send those */
676 return 3;
677 }
678
679 return 0;
680 }
681
iwl_mvm_bt_coex_vif_change(struct iwl_mvm * mvm)682 void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm)
683 {
684 iwl_mvm_bt_coex_notif_handle(mvm);
685 }
686
