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*/ 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 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 } 134 135 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 } 176 177 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->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 } 209 210 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 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) 233 234 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 } 255 256 /* 257 * This function receives the LB link id and checks if eSR should be 258 * enabled or disabled (due to BT coex) 259 */ 260 bool 261 iwl_mvm_bt_coex_calculate_esr_mode(struct iwl_mvm *mvm, 262 struct ieee80211_vif *vif, 263 s32 link_rssi, 264 bool primary) 265 { 266 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 267 bool have_wifi_loss_rate = 268 iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 269 BT_PROFILE_NOTIFICATION, 0) > 4 || 270 iwl_fw_lookup_notif_ver(mvm->fw, BT_COEX_GROUP, 271 PROFILE_NOTIF, 0) >= 1; 272 u8 wifi_loss_mid_high_rssi; 273 u8 wifi_loss_low_rssi; 274 u8 wifi_loss_rate; 275 276 if (iwl_fw_lookup_notif_ver(mvm->fw, BT_COEX_GROUP, 277 PROFILE_NOTIF, 0) >= 1) { 278 /* For now, we consider 2.4 GHz band / ANT_A only */ 279 wifi_loss_mid_high_rssi = 280 mvm->last_bt_wifi_loss.wifi_loss_mid_high_rssi[PHY_BAND_24][0]; 281 wifi_loss_low_rssi = 282 mvm->last_bt_wifi_loss.wifi_loss_low_rssi[PHY_BAND_24][0]; 283 } else { 284 wifi_loss_mid_high_rssi = mvm->last_bt_notif.wifi_loss_mid_high_rssi; 285 wifi_loss_low_rssi = mvm->last_bt_notif.wifi_loss_low_rssi; 286 } 287 288 if (wifi_loss_low_rssi == BT_OFF) 289 return true; 290 291 if (primary) 292 return false; 293 294 /* The feature is not supported */ 295 if (!have_wifi_loss_rate) 296 return true; 297 298 299 /* 300 * In case we don't know the RSSI - take the lower wifi loss, 301 * so we will more likely enter eSR, and if RSSI is low - 302 * we will get an update on this and exit eSR. 303 */ 304 if (!link_rssi) 305 wifi_loss_rate = wifi_loss_mid_high_rssi; 306 307 else if (mvmvif->esr_active) 308 /* RSSI needs to get really low to disable eSR... */ 309 wifi_loss_rate = 310 link_rssi <= -IWL_MVM_BT_COEX_DISABLE_ESR_THRESH ? 311 wifi_loss_low_rssi : 312 wifi_loss_mid_high_rssi; 313 else 314 /* ...And really high before we enable it back */ 315 wifi_loss_rate = 316 link_rssi <= -IWL_MVM_BT_COEX_ENABLE_ESR_THRESH ? 317 wifi_loss_low_rssi : 318 wifi_loss_mid_high_rssi; 319 320 return wifi_loss_rate <= IWL_MVM_BT_COEX_WIFI_LOSS_THRESH; 321 } 322 323 void iwl_mvm_bt_coex_update_link_esr(struct iwl_mvm *mvm, 324 struct ieee80211_vif *vif, 325 int link_id) 326 { 327 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 328 struct iwl_mvm_vif_link_info *link = mvmvif->link[link_id]; 329 330 if (!ieee80211_vif_is_mld(vif) || 331 !iwl_mvm_vif_from_mac80211(vif)->authorized || 332 WARN_ON(!link)) 333 return; 334 335 if (!iwl_mvm_bt_coex_calculate_esr_mode(mvm, vif, 336 (s8)link->beacon_stats.avg_signal, 337 link_id == iwl_mvm_get_primary_link(vif))) 338 /* In case we decided to exit eSR - stay with the primary */ 339 iwl_mvm_exit_esr(mvm, vif, IWL_MVM_ESR_EXIT_COEX, 340 iwl_mvm_get_primary_link(vif)); 341 } 342 343 static void iwl_mvm_bt_notif_per_link(struct iwl_mvm *mvm, 344 struct ieee80211_vif *vif, 345 struct iwl_bt_iterator_data *data, 346 unsigned int link_id) 347 { 348 /* default smps_mode is AUTOMATIC - only used for client modes */ 349 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC; 350 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 351 u32 bt_activity_grading, min_ag_for_static_smps; 352 struct ieee80211_chanctx_conf *chanctx_conf; 353 struct iwl_mvm_vif_link_info *link_info; 354 struct ieee80211_bss_conf *link_conf; 355 int ave_rssi; 356 357 lockdep_assert_held(&mvm->mutex); 358 359 link_info = mvmvif->link[link_id]; 360 if (!link_info) 361 return; 362 363 link_conf = rcu_dereference(vif->link_conf[link_id]); 364 /* This can happen due to races: if we receive the notification 365 * and have the mutex held, while mac80211 is stuck on our mutex 366 * in the middle of removing the link. 367 */ 368 if (!link_conf) 369 return; 370 371 chanctx_conf = rcu_dereference(link_conf->chanctx_conf); 372 373 /* If channel context is invalid or not on 2.4GHz .. */ 374 if ((!chanctx_conf || 375 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ)) { 376 if (vif->type == NL80211_IFTYPE_STATION) { 377 /* ... relax constraints and disable rssi events */ 378 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, 379 smps_mode, link_id); 380 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, 381 false); 382 iwl_mvm_bt_coex_enable_rssi_event(mvm, link_info, false, 383 0); 384 } 385 return; 386 } 387 388 iwl_mvm_bt_coex_update_link_esr(mvm, vif, link_id); 389 390 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2)) 391 min_ag_for_static_smps = BT_VERY_HIGH_TRAFFIC; 392 else 393 min_ag_for_static_smps = BT_HIGH_TRAFFIC; 394 395 bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading); 396 if (bt_activity_grading >= min_ag_for_static_smps) 397 smps_mode = IEEE80211_SMPS_STATIC; 398 else if (bt_activity_grading >= BT_LOW_TRAFFIC) 399 smps_mode = IEEE80211_SMPS_DYNAMIC; 400 401 /* relax SMPS constraints for next association */ 402 if (!vif->cfg.assoc) 403 smps_mode = IEEE80211_SMPS_AUTOMATIC; 404 405 if (link_info->phy_ctxt && 406 (mvm->last_bt_notif.rrc_status & BIT(link_info->phy_ctxt->id))) 407 smps_mode = IEEE80211_SMPS_AUTOMATIC; 408 409 IWL_DEBUG_COEX(data->mvm, 410 "mac %d link %d: bt_activity_grading %d smps_req %d\n", 411 mvmvif->id, link_info->fw_link_id, 412 bt_activity_grading, smps_mode); 413 414 if (vif->type == NL80211_IFTYPE_STATION) 415 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, 416 smps_mode, link_id); 417 418 /* low latency is always primary */ 419 if (iwl_mvm_vif_low_latency(mvmvif)) { 420 data->primary_ll = true; 421 422 data->secondary = data->primary; 423 data->primary = chanctx_conf; 424 } 425 426 if (vif->type == NL80211_IFTYPE_AP) { 427 if (!mvmvif->ap_ibss_active) 428 return; 429 430 if (chanctx_conf == data->primary) 431 return; 432 433 if (!data->primary_ll) { 434 /* 435 * downgrade the current primary no matter what its 436 * type is. 437 */ 438 data->secondary = data->primary; 439 data->primary = chanctx_conf; 440 } else { 441 /* there is low latency vif - we will be secondary */ 442 data->secondary = chanctx_conf; 443 } 444 445 /* FIXME: TCM load per interface? or need something per link? */ 446 if (data->primary == chanctx_conf) 447 data->primary_load = mvm->tcm.result.load[mvmvif->id]; 448 else if (data->secondary == chanctx_conf) 449 data->secondary_load = mvm->tcm.result.load[mvmvif->id]; 450 return; 451 } 452 453 /* 454 * STA / P2P Client, try to be primary if first vif. If we are in low 455 * latency mode, we are already in primary and just don't do much 456 */ 457 if (!data->primary || data->primary == chanctx_conf) 458 data->primary = chanctx_conf; 459 else if (!data->secondary) 460 /* if secondary is not NULL, it might be a GO */ 461 data->secondary = chanctx_conf; 462 463 /* FIXME: TCM load per interface? or need something per link? */ 464 if (data->primary == chanctx_conf) 465 data->primary_load = mvm->tcm.result.load[mvmvif->id]; 466 else if (data->secondary == chanctx_conf) 467 data->secondary_load = mvm->tcm.result.load[mvmvif->id]; 468 /* 469 * don't reduce the Tx power if one of these is true: 470 * we are in LOOSE 471 * BT is inactive 472 * we are not associated 473 */ 474 if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT || 475 le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF || 476 !vif->cfg.assoc) { 477 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, false); 478 iwl_mvm_bt_coex_enable_rssi_event(mvm, link_info, false, 0); 479 return; 480 } 481 482 /* try to get the avg rssi from fw */ 483 ave_rssi = link_info->bf_data.ave_beacon_signal; 484 485 /* if the RSSI isn't valid, fake it is very low */ 486 if (!ave_rssi) 487 ave_rssi = -100; 488 if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) { 489 if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, 490 true)) 491 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); 492 } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) { 493 if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, 494 false)) 495 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); 496 } 497 498 /* Begin to monitor the RSSI: it may influence the reduced Tx power */ 499 iwl_mvm_bt_coex_enable_rssi_event(mvm, link_info, true, ave_rssi); 500 } 501 502 /* must be called under rcu_read_lock */ 503 static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac, 504 struct ieee80211_vif *vif) 505 { 506 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 507 struct iwl_bt_iterator_data *data = _data; 508 struct iwl_mvm *mvm = data->mvm; 509 unsigned int link_id; 510 511 lockdep_assert_held(&mvm->mutex); 512 513 switch (vif->type) { 514 case NL80211_IFTYPE_STATION: 515 break; 516 case NL80211_IFTYPE_AP: 517 if (!mvmvif->ap_ibss_active) 518 return; 519 break; 520 default: 521 return; 522 } 523 524 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) 525 iwl_mvm_bt_notif_per_link(mvm, vif, data, link_id); 526 } 527 528 /* must be called under rcu_read_lock */ 529 static void iwl_mvm_bt_coex_notif_iterator(void *_data, u8 *mac, 530 struct ieee80211_vif *vif) 531 { 532 struct iwl_mvm *mvm = _data; 533 534 lockdep_assert_held(&mvm->mutex); 535 536 if (vif->type != NL80211_IFTYPE_STATION) 537 return; 538 539 for (int link_id = 0; 540 link_id < IEEE80211_MLD_MAX_NUM_LINKS; 541 link_id++) { 542 struct ieee80211_bss_conf *link_conf = 543 rcu_dereference_check(vif->link_conf[link_id], 544 lockdep_is_held(&mvm->mutex)); 545 struct ieee80211_chanctx_conf *chanctx_conf = 546 rcu_dereference_check(link_conf->chanctx_conf, 547 lockdep_is_held(&mvm->mutex)); 548 549 if ((!chanctx_conf || 550 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ)) 551 continue; 552 553 iwl_mvm_bt_coex_update_link_esr(mvm, vif, link_id); 554 } 555 } 556 557 static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm) 558 { 559 struct iwl_bt_iterator_data data = { 560 .mvm = mvm, 561 .notif = &mvm->last_bt_notif, 562 }; 563 struct iwl_bt_coex_ci_cmd cmd = {}; 564 u8 ci_bw_idx; 565 566 /* Ignore updates if we are in force mode */ 567 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) 568 return; 569 570 rcu_read_lock(); 571 ieee80211_iterate_active_interfaces_atomic( 572 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 573 iwl_mvm_bt_notif_iterator, &data); 574 575 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { 576 rcu_read_unlock(); 577 return; 578 } 579 580 iwl_mvm_bt_coex_tcm_based_ci(mvm, &data); 581 582 if (data.primary) { 583 struct ieee80211_chanctx_conf *chan = data.primary; 584 if (WARN_ON(!chan->def.chan)) { 585 rcu_read_unlock(); 586 return; 587 } 588 589 if (chan->def.width < NL80211_CHAN_WIDTH_40) { 590 ci_bw_idx = 0; 591 } else { 592 if (chan->def.center_freq1 > 593 chan->def.chan->center_freq) 594 ci_bw_idx = 2; 595 else 596 ci_bw_idx = 1; 597 } 598 599 cmd.bt_primary_ci = 600 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx]; 601 cmd.primary_ch_phy_id = 602 cpu_to_le32(*((u16 *)data.primary->drv_priv)); 603 } 604 605 if (data.secondary) { 606 struct ieee80211_chanctx_conf *chan = data.secondary; 607 if (WARN_ON(!data.secondary->def.chan)) { 608 rcu_read_unlock(); 609 return; 610 } 611 612 if (chan->def.width < NL80211_CHAN_WIDTH_40) { 613 ci_bw_idx = 0; 614 } else { 615 if (chan->def.center_freq1 > 616 chan->def.chan->center_freq) 617 ci_bw_idx = 2; 618 else 619 ci_bw_idx = 1; 620 } 621 622 cmd.bt_secondary_ci = 623 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx]; 624 cmd.secondary_ch_phy_id = 625 cpu_to_le32(*((u16 *)data.secondary->drv_priv)); 626 } 627 628 rcu_read_unlock(); 629 630 /* Don't spam the fw with the same command over and over */ 631 if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) { 632 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0, 633 sizeof(cmd), &cmd)) 634 IWL_ERR(mvm, "Failed to send BT_CI cmd\n"); 635 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd)); 636 } 637 } 638 639 void iwl_mvm_rx_bt_coex_old_notif(struct iwl_mvm *mvm, 640 struct iwl_rx_cmd_buffer *rxb) 641 { 642 struct iwl_rx_packet *pkt = rxb_addr(rxb); 643 struct iwl_bt_coex_prof_old_notif *notif = (void *)pkt->data; 644 645 IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n"); 646 IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance); 647 IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n", 648 le32_to_cpu(notif->primary_ch_lut)); 649 IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n", 650 le32_to_cpu(notif->secondary_ch_lut)); 651 IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n", 652 le32_to_cpu(notif->bt_activity_grading)); 653 654 /* remember this notification for future use: rssi fluctuations */ 655 memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif)); 656 657 iwl_mvm_bt_coex_notif_handle(mvm); 658 } 659 660 void iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm, 661 struct iwl_rx_cmd_buffer *rxb) 662 { 663 const struct iwl_rx_packet *pkt = rxb_addr(rxb); 664 const struct iwl_bt_coex_profile_notif *notif = (const void *)pkt->data; 665 666 lockdep_assert_held(&mvm->mutex); 667 668 mvm->last_bt_wifi_loss = *notif; 669 670 ieee80211_iterate_active_interfaces(mvm->hw, 671 IEEE80211_IFACE_ITER_NORMAL, 672 iwl_mvm_bt_coex_notif_iterator, 673 mvm); 674 } 675 676 void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 677 enum ieee80211_rssi_event_data rssi_event) 678 { 679 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 680 int ret; 681 682 lockdep_assert_held(&mvm->mutex); 683 684 /* Ignore updates if we are in force mode */ 685 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) 686 return; 687 688 /* 689 * Rssi update while not associated - can happen since the statistics 690 * are handled asynchronously 691 */ 692 if (mvmvif->deflink.ap_sta_id == IWL_INVALID_STA) 693 return; 694 695 /* No BT - reports should be disabled */ 696 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) 697 return; 698 699 IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid, 700 rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW"); 701 702 /* 703 * Check if rssi is good enough for reduced Tx power, but not in loose 704 * scheme. 705 */ 706 if (rssi_event == RSSI_EVENT_LOW || 707 iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT) 708 ret = iwl_mvm_bt_coex_reduced_txp(mvm, 709 mvmvif->deflink.ap_sta_id, 710 false); 711 else 712 ret = iwl_mvm_bt_coex_reduced_txp(mvm, 713 mvmvif->deflink.ap_sta_id, 714 true); 715 716 if (ret) 717 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n"); 718 } 719 720 #define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000) 721 #define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200) 722 723 u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm, 724 struct ieee80211_sta *sta) 725 { 726 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 727 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 728 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt; 729 enum iwl_bt_coex_lut_type lut_type; 730 731 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id)) 732 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 733 734 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 735 BT_HIGH_TRAFFIC) 736 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 737 738 lut_type = iwl_get_coex_type(mvm, mvmsta->vif); 739 740 if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT) 741 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 742 743 /* tight coex, high bt traffic, reduce AGG time limit */ 744 return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT; 745 } 746 747 bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm, 748 struct ieee80211_sta *sta) 749 { 750 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 751 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 752 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt; 753 enum iwl_bt_coex_lut_type lut_type; 754 755 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id)) 756 return true; 757 758 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 759 BT_HIGH_TRAFFIC) 760 return true; 761 762 /* 763 * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas 764 * since BT is already killed. 765 * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while 766 * we Tx. 767 * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO. 768 */ 769 lut_type = iwl_get_coex_type(mvm, mvmsta->vif); 770 return lut_type != BT_COEX_LOOSE_LUT; 771 } 772 773 bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant) 774 { 775 if (ant & mvm->cfg->non_shared_ant) 776 return true; 777 778 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 779 BT_HIGH_TRAFFIC; 780 } 781 782 bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm) 783 { 784 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC; 785 } 786 787 bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm, 788 enum nl80211_band band) 789 { 790 u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading); 791 792 if (band != NL80211_BAND_2GHZ) 793 return false; 794 795 return bt_activity >= BT_LOW_TRAFFIC; 796 } 797 798 u8 iwl_mvm_bt_coex_get_single_ant_msk(struct iwl_mvm *mvm, u8 enabled_ants) 799 { 800 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2) && 801 (mvm->cfg->non_shared_ant & enabled_ants)) 802 return mvm->cfg->non_shared_ant; 803 804 return first_antenna(enabled_ants); 805 } 806 807 u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr, 808 struct ieee80211_tx_info *info, u8 ac) 809 { 810 __le16 fc = hdr->frame_control; 811 bool mplut_enabled = iwl_mvm_is_mplut_supported(mvm); 812 813 if (info->band != NL80211_BAND_2GHZ) 814 return 0; 815 816 if (unlikely(mvm->bt_tx_prio)) 817 return mvm->bt_tx_prio - 1; 818 819 if (likely(ieee80211_is_data(fc))) { 820 if (likely(ieee80211_is_data_qos(fc))) { 821 switch (ac) { 822 case IEEE80211_AC_BE: 823 return mplut_enabled ? 1 : 0; 824 case IEEE80211_AC_VI: 825 return mplut_enabled ? 2 : 3; 826 case IEEE80211_AC_VO: 827 return 3; 828 default: 829 return 0; 830 } 831 } else if (is_multicast_ether_addr(hdr->addr1)) { 832 return 3; 833 } else 834 return 0; 835 } else if (ieee80211_is_mgmt(fc)) { 836 return ieee80211_is_disassoc(fc) ? 0 : 3; 837 } else if (ieee80211_is_ctl(fc)) { 838 /* ignore cfend and cfendack frames as we never send those */ 839 return 3; 840 } 841 842 return 0; 843 } 844 845 void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm) 846 { 847 iwl_mvm_bt_coex_notif_handle(mvm); 848 } 849