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 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 static void iwl_mvm_bt_coex_enable_esr(struct iwl_mvm *mvm, 257 struct ieee80211_vif *vif, bool enable) 258 { 259 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 260 int link_id; 261 262 lockdep_assert_held(&mvm->mutex); 263 264 if (!vif->cfg.assoc || !ieee80211_vif_is_mld(vif)) 265 return; 266 267 /* Done already */ 268 if (mvmvif->bt_coex_esr_disabled == !enable) 269 return; 270 271 mvmvif->bt_coex_esr_disabled = !enable; 272 273 /* Nothing to do */ 274 if (mvmvif->esr_active == enable) 275 return; 276 277 if (enable) { 278 /* Try to re-enable eSR*/ 279 iwl_mvm_mld_select_links(mvm, vif, false); 280 return; 281 } 282 283 /* 284 * Find the primary link, as we want to switch to it and drop the 285 * secondary one. 286 */ 287 link_id = iwl_mvm_mld_get_primary_link(mvm, vif, vif->active_links); 288 WARN_ON(link_id < 0); 289 290 ieee80211_set_active_links_async(vif, 291 vif->active_links & BIT(link_id)); 292 } 293 294 /* 295 * This function receives the LB link id and checks if eSR should be 296 * enabled or disabled (due to BT coex) 297 */ 298 bool 299 iwl_mvm_bt_coex_calculate_esr_mode(struct iwl_mvm *mvm, 300 struct ieee80211_vif *vif, 301 int link_id, int primary_link) 302 { 303 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 304 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id]; 305 bool have_wifi_loss_rate = 306 iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 307 BT_PROFILE_NOTIFICATION, 0) > 4; 308 s8 link_rssi = 0; 309 u8 wifi_loss_rate; 310 311 lockdep_assert_held(&mvm->mutex); 312 313 if (mvm->last_bt_notif.wifi_loss_low_rssi == BT_OFF) 314 return true; 315 316 /* If LB link is the primary one we should always disable eSR */ 317 if (link_id == primary_link) 318 return false; 319 320 /* The feature is not supported */ 321 if (!have_wifi_loss_rate) 322 return true; 323 324 /* 325 * We might not have a link_info when checking whether we can 326 * (re)enable eSR - the LB link might not exist yet 327 */ 328 if (link_info) 329 link_rssi = (s8)link_info->beacon_stats.avg_signal; 330 331 /* 332 * In case we don't know the RSSI - take the lower wifi loss, 333 * so we will more likely enter eSR, and if RSSI is low - 334 * we will get an update on this and exit eSR. 335 */ 336 if (!link_rssi) 337 wifi_loss_rate = mvm->last_bt_notif.wifi_loss_mid_high_rssi; 338 339 else if (!mvmvif->bt_coex_esr_disabled) 340 /* RSSI needs to get really low to disable eSR... */ 341 wifi_loss_rate = 342 link_rssi <= -IWL_MVM_BT_COEX_DISABLE_ESR_THRESH ? 343 mvm->last_bt_notif.wifi_loss_low_rssi : 344 mvm->last_bt_notif.wifi_loss_mid_high_rssi; 345 else 346 /* ...And really high before we enable it back */ 347 wifi_loss_rate = 348 link_rssi <= -IWL_MVM_BT_COEX_ENABLE_ESR_THRESH ? 349 mvm->last_bt_notif.wifi_loss_low_rssi : 350 mvm->last_bt_notif.wifi_loss_mid_high_rssi; 351 352 return wifi_loss_rate <= IWL_MVM_BT_COEX_WIFI_LOSS_THRESH; 353 } 354 355 void iwl_mvm_bt_coex_update_vif_esr(struct iwl_mvm *mvm, 356 struct ieee80211_vif *vif, 357 int link_id) 358 { 359 unsigned long usable_links = ieee80211_vif_usable_links(vif); 360 int primary_link = iwl_mvm_mld_get_primary_link(mvm, vif, 361 usable_links); 362 bool enable; 363 364 /* Not assoc, not MLD vif or only one usable link */ 365 if (primary_link < 0) 366 return; 367 368 enable = iwl_mvm_bt_coex_calculate_esr_mode(mvm, vif, link_id, 369 primary_link); 370 371 iwl_mvm_bt_coex_enable_esr(mvm, vif, enable); 372 } 373 374 static void iwl_mvm_bt_notif_per_link(struct iwl_mvm *mvm, 375 struct ieee80211_vif *vif, 376 struct iwl_bt_iterator_data *data, 377 unsigned int link_id) 378 { 379 /* default smps_mode is AUTOMATIC - only used for client modes */ 380 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC; 381 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 382 u32 bt_activity_grading, min_ag_for_static_smps; 383 struct ieee80211_chanctx_conf *chanctx_conf; 384 struct iwl_mvm_vif_link_info *link_info; 385 struct ieee80211_bss_conf *link_conf; 386 int ave_rssi; 387 388 lockdep_assert_held(&mvm->mutex); 389 390 link_info = mvmvif->link[link_id]; 391 if (!link_info) 392 return; 393 394 link_conf = rcu_dereference(vif->link_conf[link_id]); 395 /* This can happen due to races: if we receive the notification 396 * and have the mutex held, while mac80211 is stuck on our mutex 397 * in the middle of removing the link. 398 */ 399 if (!link_conf) 400 return; 401 402 chanctx_conf = rcu_dereference(link_conf->chanctx_conf); 403 404 /* If channel context is invalid or not on 2.4GHz .. */ 405 if ((!chanctx_conf || 406 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ)) { 407 if (vif->type == NL80211_IFTYPE_STATION) { 408 /* ... relax constraints and disable rssi events */ 409 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, 410 smps_mode, link_id); 411 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, 412 false); 413 iwl_mvm_bt_coex_enable_rssi_event(mvm, link_info, false, 414 0); 415 } 416 return; 417 } 418 419 iwl_mvm_bt_coex_update_vif_esr(mvm, vif, link_id); 420 421 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2)) 422 min_ag_for_static_smps = BT_VERY_HIGH_TRAFFIC; 423 else 424 min_ag_for_static_smps = BT_HIGH_TRAFFIC; 425 426 bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading); 427 if (bt_activity_grading >= min_ag_for_static_smps) 428 smps_mode = IEEE80211_SMPS_STATIC; 429 else if (bt_activity_grading >= BT_LOW_TRAFFIC) 430 smps_mode = IEEE80211_SMPS_DYNAMIC; 431 432 /* relax SMPS constraints for next association */ 433 if (!vif->cfg.assoc) 434 smps_mode = IEEE80211_SMPS_AUTOMATIC; 435 436 if (link_info->phy_ctxt && 437 (mvm->last_bt_notif.rrc_status & BIT(link_info->phy_ctxt->id))) 438 smps_mode = IEEE80211_SMPS_AUTOMATIC; 439 440 IWL_DEBUG_COEX(data->mvm, 441 "mac %d link %d: bt_activity_grading %d smps_req %d\n", 442 mvmvif->id, link_info->fw_link_id, 443 bt_activity_grading, smps_mode); 444 445 if (vif->type == NL80211_IFTYPE_STATION) 446 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, 447 smps_mode, link_id); 448 449 /* low latency is always primary */ 450 if (iwl_mvm_vif_low_latency(mvmvif)) { 451 data->primary_ll = true; 452 453 data->secondary = data->primary; 454 data->primary = chanctx_conf; 455 } 456 457 if (vif->type == NL80211_IFTYPE_AP) { 458 if (!mvmvif->ap_ibss_active) 459 return; 460 461 if (chanctx_conf == data->primary) 462 return; 463 464 if (!data->primary_ll) { 465 /* 466 * downgrade the current primary no matter what its 467 * type is. 468 */ 469 data->secondary = data->primary; 470 data->primary = chanctx_conf; 471 } else { 472 /* there is low latency vif - we will be secondary */ 473 data->secondary = chanctx_conf; 474 } 475 476 /* FIXME: TCM load per interface? or need something per link? */ 477 if (data->primary == chanctx_conf) 478 data->primary_load = mvm->tcm.result.load[mvmvif->id]; 479 else if (data->secondary == chanctx_conf) 480 data->secondary_load = mvm->tcm.result.load[mvmvif->id]; 481 return; 482 } 483 484 /* 485 * STA / P2P Client, try to be primary if first vif. If we are in low 486 * latency mode, we are already in primary and just don't do much 487 */ 488 if (!data->primary || data->primary == chanctx_conf) 489 data->primary = chanctx_conf; 490 else if (!data->secondary) 491 /* if secondary is not NULL, it might be a GO */ 492 data->secondary = chanctx_conf; 493 494 /* FIXME: TCM load per interface? or need something per link? */ 495 if (data->primary == chanctx_conf) 496 data->primary_load = mvm->tcm.result.load[mvmvif->id]; 497 else if (data->secondary == chanctx_conf) 498 data->secondary_load = mvm->tcm.result.load[mvmvif->id]; 499 /* 500 * don't reduce the Tx power if one of these is true: 501 * we are in LOOSE 502 * BT is inactive 503 * we are not associated 504 */ 505 if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT || 506 le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF || 507 !vif->cfg.assoc) { 508 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, false); 509 iwl_mvm_bt_coex_enable_rssi_event(mvm, link_info, false, 0); 510 return; 511 } 512 513 /* try to get the avg rssi from fw */ 514 ave_rssi = link_info->bf_data.ave_beacon_signal; 515 516 /* if the RSSI isn't valid, fake it is very low */ 517 if (!ave_rssi) 518 ave_rssi = -100; 519 if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) { 520 if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, 521 true)) 522 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); 523 } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) { 524 if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, 525 false)) 526 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); 527 } 528 529 /* Begin to monitor the RSSI: it may influence the reduced Tx power */ 530 iwl_mvm_bt_coex_enable_rssi_event(mvm, link_info, true, ave_rssi); 531 } 532 533 /* must be called under rcu_read_lock */ 534 static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac, 535 struct ieee80211_vif *vif) 536 { 537 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 538 struct iwl_bt_iterator_data *data = _data; 539 struct iwl_mvm *mvm = data->mvm; 540 unsigned int link_id; 541 542 lockdep_assert_held(&mvm->mutex); 543 544 switch (vif->type) { 545 case NL80211_IFTYPE_STATION: 546 break; 547 case NL80211_IFTYPE_AP: 548 if (!mvmvif->ap_ibss_active) 549 return; 550 break; 551 default: 552 return; 553 } 554 555 /* When BT is off this will be 0 */ 556 if (data->notif->wifi_loss_low_rssi == BT_OFF) 557 iwl_mvm_bt_coex_enable_esr(mvm, vif, true); 558 559 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) 560 iwl_mvm_bt_notif_per_link(mvm, vif, data, link_id); 561 } 562 563 static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm) 564 { 565 struct iwl_bt_iterator_data data = { 566 .mvm = mvm, 567 .notif = &mvm->last_bt_notif, 568 }; 569 struct iwl_bt_coex_ci_cmd cmd = {}; 570 u8 ci_bw_idx; 571 572 /* Ignore updates if we are in force mode */ 573 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) 574 return; 575 576 rcu_read_lock(); 577 ieee80211_iterate_active_interfaces_atomic( 578 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 579 iwl_mvm_bt_notif_iterator, &data); 580 581 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { 582 rcu_read_unlock(); 583 return; 584 } 585 586 iwl_mvm_bt_coex_tcm_based_ci(mvm, &data); 587 588 if (data.primary) { 589 struct ieee80211_chanctx_conf *chan = data.primary; 590 if (WARN_ON(!chan->def.chan)) { 591 rcu_read_unlock(); 592 return; 593 } 594 595 if (chan->def.width < NL80211_CHAN_WIDTH_40) { 596 ci_bw_idx = 0; 597 } else { 598 if (chan->def.center_freq1 > 599 chan->def.chan->center_freq) 600 ci_bw_idx = 2; 601 else 602 ci_bw_idx = 1; 603 } 604 605 cmd.bt_primary_ci = 606 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx]; 607 cmd.primary_ch_phy_id = 608 cpu_to_le32(*((u16 *)data.primary->drv_priv)); 609 } 610 611 if (data.secondary) { 612 struct ieee80211_chanctx_conf *chan = data.secondary; 613 if (WARN_ON(!data.secondary->def.chan)) { 614 rcu_read_unlock(); 615 return; 616 } 617 618 if (chan->def.width < NL80211_CHAN_WIDTH_40) { 619 ci_bw_idx = 0; 620 } else { 621 if (chan->def.center_freq1 > 622 chan->def.chan->center_freq) 623 ci_bw_idx = 2; 624 else 625 ci_bw_idx = 1; 626 } 627 628 cmd.bt_secondary_ci = 629 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx]; 630 cmd.secondary_ch_phy_id = 631 cpu_to_le32(*((u16 *)data.secondary->drv_priv)); 632 } 633 634 rcu_read_unlock(); 635 636 /* Don't spam the fw with the same command over and over */ 637 if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) { 638 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0, 639 sizeof(cmd), &cmd)) 640 IWL_ERR(mvm, "Failed to send BT_CI cmd\n"); 641 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd)); 642 } 643 } 644 645 void iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm, 646 struct iwl_rx_cmd_buffer *rxb) 647 { 648 struct iwl_rx_packet *pkt = rxb_addr(rxb); 649 struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data; 650 651 IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n"); 652 IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance); 653 IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n", 654 le32_to_cpu(notif->primary_ch_lut)); 655 IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n", 656 le32_to_cpu(notif->secondary_ch_lut)); 657 IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n", 658 le32_to_cpu(notif->bt_activity_grading)); 659 660 /* remember this notification for future use: rssi fluctuations */ 661 memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif)); 662 663 iwl_mvm_bt_coex_notif_handle(mvm); 664 } 665 666 void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 667 enum ieee80211_rssi_event_data rssi_event) 668 { 669 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 670 int ret; 671 672 lockdep_assert_held(&mvm->mutex); 673 674 /* Ignore updates if we are in force mode */ 675 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) 676 return; 677 678 /* 679 * Rssi update while not associated - can happen since the statistics 680 * are handled asynchronously 681 */ 682 if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA) 683 return; 684 685 /* No BT - reports should be disabled */ 686 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) 687 return; 688 689 IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid, 690 rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW"); 691 692 /* 693 * Check if rssi is good enough for reduced Tx power, but not in loose 694 * scheme. 695 */ 696 if (rssi_event == RSSI_EVENT_LOW || 697 iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT) 698 ret = iwl_mvm_bt_coex_reduced_txp(mvm, 699 mvmvif->deflink.ap_sta_id, 700 false); 701 else 702 ret = iwl_mvm_bt_coex_reduced_txp(mvm, 703 mvmvif->deflink.ap_sta_id, 704 true); 705 706 if (ret) 707 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n"); 708 } 709 710 #define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000) 711 #define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200) 712 713 u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm, 714 struct ieee80211_sta *sta) 715 { 716 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 717 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 718 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt; 719 enum iwl_bt_coex_lut_type lut_type; 720 721 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id)) 722 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 723 724 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 725 BT_HIGH_TRAFFIC) 726 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 727 728 lut_type = iwl_get_coex_type(mvm, mvmsta->vif); 729 730 if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT) 731 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 732 733 /* tight coex, high bt traffic, reduce AGG time limit */ 734 return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT; 735 } 736 737 bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm, 738 struct ieee80211_sta *sta) 739 { 740 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 741 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 742 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt; 743 enum iwl_bt_coex_lut_type lut_type; 744 745 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id)) 746 return true; 747 748 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 749 BT_HIGH_TRAFFIC) 750 return true; 751 752 /* 753 * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas 754 * since BT is already killed. 755 * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while 756 * we Tx. 757 * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO. 758 */ 759 lut_type = iwl_get_coex_type(mvm, mvmsta->vif); 760 return lut_type != BT_COEX_LOOSE_LUT; 761 } 762 763 bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant) 764 { 765 if (ant & mvm->cfg->non_shared_ant) 766 return true; 767 768 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 769 BT_HIGH_TRAFFIC; 770 } 771 772 bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm) 773 { 774 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC; 775 } 776 777 bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm, 778 enum nl80211_band band) 779 { 780 u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading); 781 782 if (band != NL80211_BAND_2GHZ) 783 return false; 784 785 return bt_activity >= BT_LOW_TRAFFIC; 786 } 787 788 u8 iwl_mvm_bt_coex_get_single_ant_msk(struct iwl_mvm *mvm, u8 enabled_ants) 789 { 790 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2) && 791 (mvm->cfg->non_shared_ant & enabled_ants)) 792 return mvm->cfg->non_shared_ant; 793 794 return first_antenna(enabled_ants); 795 } 796 797 u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr, 798 struct ieee80211_tx_info *info, u8 ac) 799 { 800 __le16 fc = hdr->frame_control; 801 bool mplut_enabled = iwl_mvm_is_mplut_supported(mvm); 802 803 if (info->band != NL80211_BAND_2GHZ) 804 return 0; 805 806 if (unlikely(mvm->bt_tx_prio)) 807 return mvm->bt_tx_prio - 1; 808 809 if (likely(ieee80211_is_data(fc))) { 810 if (likely(ieee80211_is_data_qos(fc))) { 811 switch (ac) { 812 case IEEE80211_AC_BE: 813 return mplut_enabled ? 1 : 0; 814 case IEEE80211_AC_VI: 815 return mplut_enabled ? 2 : 3; 816 case IEEE80211_AC_VO: 817 return 3; 818 default: 819 return 0; 820 } 821 } else if (is_multicast_ether_addr(hdr->addr1)) { 822 return 3; 823 } else 824 return 0; 825 } else if (ieee80211_is_mgmt(fc)) { 826 return ieee80211_is_disassoc(fc) ? 0 : 3; 827 } else if (ieee80211_is_ctl(fc)) { 828 /* ignore cfend and cfendack frames as we never send those */ 829 return 3; 830 } 831 832 return 0; 833 } 834 835 void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm) 836 { 837 iwl_mvm_bt_coex_notif_handle(mvm); 838 } 839