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*/ 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_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 }; 219 220 static inline 221 void 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) 235 236 static 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 } 257 258 static 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 int link_id; 263 264 lockdep_assert_held(&mvm->mutex); 265 266 if (!vif->cfg.assoc || !ieee80211_vif_is_mld(vif)) 267 return; 268 269 /* Done already */ 270 if (mvmvif->bt_coex_esr_disabled == !enable) 271 return; 272 273 mvmvif->bt_coex_esr_disabled = !enable; 274 275 /* Nothing to do */ 276 if (mvmvif->esr_active == enable) 277 return; 278 279 if (enable) { 280 /* Try to re-enable eSR*/ 281 iwl_mvm_mld_select_links(mvm, vif, false); 282 return; 283 } 284 285 /* 286 * Find the primary link, as we want to switch to it and drop the 287 * secondary one. 288 */ 289 link_id = iwl_mvm_mld_get_primary_link(mvm, vif, vif->active_links); 290 WARN_ON(link_id < 0); 291 292 ieee80211_set_active_links_async(vif, 293 vif->active_links & BIT(link_id)); 294 } 295 296 /* 297 * This function receives the LB link id and checks if eSR should be 298 * enabled or disabled (due to BT coex) 299 */ 300 bool 301 iwl_mvm_bt_coex_calculate_esr_mode(struct iwl_mvm *mvm, 302 struct ieee80211_vif *vif, 303 int link_id, int primary_link) 304 { 305 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 306 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id]; 307 bool have_wifi_loss_rate = 308 iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 309 BT_PROFILE_NOTIFICATION, 0) > 4; 310 s8 link_rssi = 0; 311 u8 wifi_loss_rate; 312 313 lockdep_assert_held(&mvm->mutex); 314 315 if (mvm->last_bt_notif.wifi_loss_low_rssi == BT_OFF) 316 return true; 317 318 /* If LB link is the primary one we should always disable eSR */ 319 if (link_id == primary_link) 320 return false; 321 322 /* The feature is not supported */ 323 if (!have_wifi_loss_rate) 324 return true; 325 326 /* 327 * We might not have a link_info when checking whether we can 328 * (re)enable eSR - the LB link might not exist yet 329 */ 330 if (link_info) 331 link_rssi = (s8)link_info->beacon_stats.avg_signal; 332 333 /* 334 * In case we don't know the RSSI - take the lower wifi loss, 335 * so we will more likely enter eSR, and if RSSI is low - 336 * we will get an update on this and exit eSR. 337 */ 338 if (!link_rssi) 339 wifi_loss_rate = mvm->last_bt_notif.wifi_loss_mid_high_rssi; 340 341 else if (!mvmvif->bt_coex_esr_disabled) 342 /* RSSI needs to get really low to disable eSR... */ 343 wifi_loss_rate = 344 link_rssi <= -IWL_MVM_BT_COEX_DISABLE_ESR_THRESH ? 345 mvm->last_bt_notif.wifi_loss_low_rssi : 346 mvm->last_bt_notif.wifi_loss_mid_high_rssi; 347 else 348 /* ...And really high before we enable it back */ 349 wifi_loss_rate = 350 link_rssi <= -IWL_MVM_BT_COEX_ENABLE_ESR_THRESH ? 351 mvm->last_bt_notif.wifi_loss_low_rssi : 352 mvm->last_bt_notif.wifi_loss_mid_high_rssi; 353 354 return wifi_loss_rate <= IWL_MVM_BT_COEX_WIFI_LOSS_THRESH; 355 } 356 357 void iwl_mvm_bt_coex_update_vif_esr(struct iwl_mvm *mvm, 358 struct ieee80211_vif *vif, 359 int link_id) 360 { 361 unsigned long usable_links = ieee80211_vif_usable_links(vif); 362 int primary_link = iwl_mvm_mld_get_primary_link(mvm, vif, 363 usable_links); 364 bool enable; 365 366 /* Not assoc, not MLD vif or only one usable link */ 367 if (primary_link < 0) 368 return; 369 370 enable = iwl_mvm_bt_coex_calculate_esr_mode(mvm, vif, link_id, 371 primary_link); 372 373 iwl_mvm_bt_coex_enable_esr(mvm, vif, enable); 374 } 375 376 static void iwl_mvm_bt_notif_per_link(struct iwl_mvm *mvm, 377 struct ieee80211_vif *vif, 378 struct iwl_bt_iterator_data *data, 379 unsigned int link_id) 380 { 381 /* default smps_mode is AUTOMATIC - only used for client modes */ 382 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC; 383 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 384 u32 bt_activity_grading, min_ag_for_static_smps; 385 struct ieee80211_chanctx_conf *chanctx_conf; 386 struct iwl_mvm_vif_link_info *link_info; 387 struct ieee80211_bss_conf *link_conf; 388 int ave_rssi; 389 390 lockdep_assert_held(&mvm->mutex); 391 392 link_info = mvmvif->link[link_id]; 393 if (!link_info) 394 return; 395 396 link_conf = rcu_dereference(vif->link_conf[link_id]); 397 /* This can happen due to races: if we receive the notification 398 * and have the mutex held, while mac80211 is stuck on our mutex 399 * in the middle of removing the link. 400 */ 401 if (!link_conf) 402 return; 403 404 chanctx_conf = rcu_dereference(link_conf->chanctx_conf); 405 406 /* If channel context is invalid or not on 2.4GHz .. */ 407 if ((!chanctx_conf || 408 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ)) { 409 if (vif->type == NL80211_IFTYPE_STATION) { 410 /* ... relax constraints and disable rssi events */ 411 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, 412 smps_mode, link_id); 413 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, 414 false); 415 /* FIXME: should this be per link? */ 416 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0); 417 } 418 return; 419 } 420 421 iwl_mvm_bt_coex_update_vif_esr(mvm, vif, link_id); 422 423 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2)) 424 min_ag_for_static_smps = BT_VERY_HIGH_TRAFFIC; 425 else 426 min_ag_for_static_smps = BT_HIGH_TRAFFIC; 427 428 bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading); 429 if (bt_activity_grading >= min_ag_for_static_smps) 430 smps_mode = IEEE80211_SMPS_STATIC; 431 else if (bt_activity_grading >= BT_LOW_TRAFFIC) 432 smps_mode = IEEE80211_SMPS_DYNAMIC; 433 434 /* relax SMPS constraints for next association */ 435 if (!vif->cfg.assoc) 436 smps_mode = IEEE80211_SMPS_AUTOMATIC; 437 438 if (link_info->phy_ctxt && 439 (mvm->last_bt_notif.rrc_status & BIT(link_info->phy_ctxt->id))) 440 smps_mode = IEEE80211_SMPS_AUTOMATIC; 441 442 IWL_DEBUG_COEX(data->mvm, 443 "mac %d link %d: bt_activity_grading %d smps_req %d\n", 444 mvmvif->id, link_info->fw_link_id, 445 bt_activity_grading, smps_mode); 446 447 if (vif->type == NL80211_IFTYPE_STATION) 448 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, 449 smps_mode, link_id); 450 451 /* low latency is always primary */ 452 if (iwl_mvm_vif_low_latency(mvmvif)) { 453 data->primary_ll = true; 454 455 data->secondary = data->primary; 456 data->primary = chanctx_conf; 457 } 458 459 if (vif->type == NL80211_IFTYPE_AP) { 460 if (!mvmvif->ap_ibss_active) 461 return; 462 463 if (chanctx_conf == data->primary) 464 return; 465 466 if (!data->primary_ll) { 467 /* 468 * downgrade the current primary no matter what its 469 * type is. 470 */ 471 data->secondary = data->primary; 472 data->primary = chanctx_conf; 473 } else { 474 /* there is low latency vif - we will be secondary */ 475 data->secondary = chanctx_conf; 476 } 477 478 /* FIXME: TCM load per interface? or need something per link? */ 479 if (data->primary == chanctx_conf) 480 data->primary_load = mvm->tcm.result.load[mvmvif->id]; 481 else if (data->secondary == chanctx_conf) 482 data->secondary_load = mvm->tcm.result.load[mvmvif->id]; 483 return; 484 } 485 486 /* 487 * STA / P2P Client, try to be primary if first vif. If we are in low 488 * latency mode, we are already in primary and just don't do much 489 */ 490 if (!data->primary || data->primary == chanctx_conf) 491 data->primary = chanctx_conf; 492 else if (!data->secondary) 493 /* if secondary is not NULL, it might be a GO */ 494 data->secondary = chanctx_conf; 495 496 /* FIXME: TCM load per interface? or need something per link? */ 497 if (data->primary == chanctx_conf) 498 data->primary_load = mvm->tcm.result.load[mvmvif->id]; 499 else if (data->secondary == chanctx_conf) 500 data->secondary_load = mvm->tcm.result.load[mvmvif->id]; 501 /* 502 * don't reduce the Tx power if one of these is true: 503 * we are in LOOSE 504 * BT is inactive 505 * we are not associated 506 */ 507 if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT || 508 le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF || 509 !vif->cfg.assoc) { 510 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, false); 511 /* FIXME: should this be per link? */ 512 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0); 513 return; 514 } 515 516 /* try to get the avg rssi from fw */ 517 ave_rssi = mvmvif->bf_data.ave_beacon_signal; 518 519 /* if the RSSI isn't valid, fake it is very low */ 520 if (!ave_rssi) 521 ave_rssi = -100; 522 if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) { 523 if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, 524 true)) 525 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); 526 } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) { 527 if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, 528 false)) 529 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); 530 } 531 532 /* Begin to monitor the RSSI: it may influence the reduced Tx power */ 533 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi); 534 } 535 536 /* must be called under rcu_read_lock */ 537 static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac, 538 struct ieee80211_vif *vif) 539 { 540 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 541 struct iwl_bt_iterator_data *data = _data; 542 struct iwl_mvm *mvm = data->mvm; 543 unsigned int link_id; 544 545 lockdep_assert_held(&mvm->mutex); 546 547 switch (vif->type) { 548 case NL80211_IFTYPE_STATION: 549 break; 550 case NL80211_IFTYPE_AP: 551 if (!mvmvif->ap_ibss_active) 552 return; 553 break; 554 default: 555 return; 556 } 557 558 /* When BT is off this will be 0 */ 559 if (data->notif->wifi_loss_low_rssi == BT_OFF) 560 iwl_mvm_bt_coex_enable_esr(mvm, vif, true); 561 562 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) 563 iwl_mvm_bt_notif_per_link(mvm, vif, data, link_id); 564 } 565 566 static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm) 567 { 568 struct iwl_bt_iterator_data data = { 569 .mvm = mvm, 570 .notif = &mvm->last_bt_notif, 571 }; 572 struct iwl_bt_coex_ci_cmd cmd = {}; 573 u8 ci_bw_idx; 574 575 /* Ignore updates if we are in force mode */ 576 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) 577 return; 578 579 rcu_read_lock(); 580 ieee80211_iterate_active_interfaces_atomic( 581 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 582 iwl_mvm_bt_notif_iterator, &data); 583 584 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { 585 rcu_read_unlock(); 586 return; 587 } 588 589 iwl_mvm_bt_coex_tcm_based_ci(mvm, &data); 590 591 if (data.primary) { 592 struct ieee80211_chanctx_conf *chan = data.primary; 593 if (WARN_ON(!chan->def.chan)) { 594 rcu_read_unlock(); 595 return; 596 } 597 598 if (chan->def.width < NL80211_CHAN_WIDTH_40) { 599 ci_bw_idx = 0; 600 } else { 601 if (chan->def.center_freq1 > 602 chan->def.chan->center_freq) 603 ci_bw_idx = 2; 604 else 605 ci_bw_idx = 1; 606 } 607 608 cmd.bt_primary_ci = 609 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx]; 610 cmd.primary_ch_phy_id = 611 cpu_to_le32(*((u16 *)data.primary->drv_priv)); 612 } 613 614 if (data.secondary) { 615 struct ieee80211_chanctx_conf *chan = data.secondary; 616 if (WARN_ON(!data.secondary->def.chan)) { 617 rcu_read_unlock(); 618 return; 619 } 620 621 if (chan->def.width < NL80211_CHAN_WIDTH_40) { 622 ci_bw_idx = 0; 623 } else { 624 if (chan->def.center_freq1 > 625 chan->def.chan->center_freq) 626 ci_bw_idx = 2; 627 else 628 ci_bw_idx = 1; 629 } 630 631 cmd.bt_secondary_ci = 632 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx]; 633 cmd.secondary_ch_phy_id = 634 cpu_to_le32(*((u16 *)data.secondary->drv_priv)); 635 } 636 637 rcu_read_unlock(); 638 639 /* Don't spam the fw with the same command over and over */ 640 if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) { 641 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0, 642 sizeof(cmd), &cmd)) 643 IWL_ERR(mvm, "Failed to send BT_CI cmd\n"); 644 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd)); 645 } 646 } 647 648 void iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm, 649 struct iwl_rx_cmd_buffer *rxb) 650 { 651 struct iwl_rx_packet *pkt = rxb_addr(rxb); 652 struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data; 653 654 IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n"); 655 IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance); 656 IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n", 657 le32_to_cpu(notif->primary_ch_lut)); 658 IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n", 659 le32_to_cpu(notif->secondary_ch_lut)); 660 IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n", 661 le32_to_cpu(notif->bt_activity_grading)); 662 663 /* remember this notification for future use: rssi fluctuations */ 664 memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif)); 665 666 iwl_mvm_bt_coex_notif_handle(mvm); 667 } 668 669 void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 670 enum ieee80211_rssi_event_data rssi_event) 671 { 672 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 673 int ret; 674 675 lockdep_assert_held(&mvm->mutex); 676 677 /* Ignore updates if we are in force mode */ 678 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) 679 return; 680 681 /* 682 * Rssi update while not associated - can happen since the statistics 683 * are handled asynchronously 684 */ 685 if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA) 686 return; 687 688 /* No BT - reports should be disabled */ 689 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) 690 return; 691 692 IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid, 693 rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW"); 694 695 /* 696 * Check if rssi is good enough for reduced Tx power, but not in loose 697 * scheme. 698 */ 699 if (rssi_event == RSSI_EVENT_LOW || 700 iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT) 701 ret = iwl_mvm_bt_coex_reduced_txp(mvm, 702 mvmvif->deflink.ap_sta_id, 703 false); 704 else 705 ret = iwl_mvm_bt_coex_reduced_txp(mvm, 706 mvmvif->deflink.ap_sta_id, 707 true); 708 709 if (ret) 710 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n"); 711 } 712 713 #define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000) 714 #define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200) 715 716 u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm, 717 struct ieee80211_sta *sta) 718 { 719 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 720 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 721 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt; 722 enum iwl_bt_coex_lut_type lut_type; 723 724 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id)) 725 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 726 727 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 728 BT_HIGH_TRAFFIC) 729 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 730 731 lut_type = iwl_get_coex_type(mvm, mvmsta->vif); 732 733 if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT) 734 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 735 736 /* tight coex, high bt traffic, reduce AGG time limit */ 737 return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT; 738 } 739 740 bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm, 741 struct ieee80211_sta *sta) 742 { 743 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 744 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 745 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt; 746 enum iwl_bt_coex_lut_type lut_type; 747 748 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id)) 749 return true; 750 751 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 752 BT_HIGH_TRAFFIC) 753 return true; 754 755 /* 756 * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas 757 * since BT is already killed. 758 * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while 759 * we Tx. 760 * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO. 761 */ 762 lut_type = iwl_get_coex_type(mvm, mvmsta->vif); 763 return lut_type != BT_COEX_LOOSE_LUT; 764 } 765 766 bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant) 767 { 768 if (ant & mvm->cfg->non_shared_ant) 769 return true; 770 771 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 772 BT_HIGH_TRAFFIC; 773 } 774 775 bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm) 776 { 777 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC; 778 } 779 780 bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm, 781 enum nl80211_band band) 782 { 783 u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading); 784 785 if (band != NL80211_BAND_2GHZ) 786 return false; 787 788 return bt_activity >= BT_LOW_TRAFFIC; 789 } 790 791 u8 iwl_mvm_bt_coex_get_single_ant_msk(struct iwl_mvm *mvm, u8 enabled_ants) 792 { 793 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2) && 794 (mvm->cfg->non_shared_ant & enabled_ants)) 795 return mvm->cfg->non_shared_ant; 796 797 return first_antenna(enabled_ants); 798 } 799 800 u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr, 801 struct ieee80211_tx_info *info, u8 ac) 802 { 803 __le16 fc = hdr->frame_control; 804 bool mplut_enabled = iwl_mvm_is_mplut_supported(mvm); 805 806 if (info->band != NL80211_BAND_2GHZ) 807 return 0; 808 809 if (unlikely(mvm->bt_tx_prio)) 810 return mvm->bt_tx_prio - 1; 811 812 if (likely(ieee80211_is_data(fc))) { 813 if (likely(ieee80211_is_data_qos(fc))) { 814 switch (ac) { 815 case IEEE80211_AC_BE: 816 return mplut_enabled ? 1 : 0; 817 case IEEE80211_AC_VI: 818 return mplut_enabled ? 2 : 3; 819 case IEEE80211_AC_VO: 820 return 3; 821 default: 822 return 0; 823 } 824 } else if (is_multicast_ether_addr(hdr->addr1)) { 825 return 3; 826 } else 827 return 0; 828 } else if (ieee80211_is_mgmt(fc)) { 829 return ieee80211_is_disassoc(fc) ? 0 : 3; 830 } else if (ieee80211_is_ctl(fc)) { 831 /* ignore cfend and cfendack frames as we never send those */ 832 return 3; 833 } 834 835 return 0; 836 } 837 838 void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm) 839 { 840 iwl_mvm_bt_coex_notif_handle(mvm); 841 } 842