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