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