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 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 185 if (!mvmsta) 186 return 0; 187 188 /* nothing to do */ 189 if (mvmsta->bt_reduced_txpower == enable) 190 return 0; 191 192 value = mvmsta->deflink.sta_id; 193 194 if (enable) 195 value |= BT_REDUCED_TX_POWER_BIT; 196 197 IWL_DEBUG_COEX(mvm, "%sable reduced Tx Power for sta %d\n", 198 enable ? "en" : "dis", sta_id); 199 200 cmd.reduced_txp = cpu_to_le32(value); 201 mvmsta->bt_reduced_txpower = enable; 202 203 return iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_REDUCED_TXP, 204 CMD_ASYNC, sizeof(cmd), &cmd); 205 } 206 207 struct iwl_bt_iterator_data { 208 struct iwl_bt_coex_profile_notif *notif; 209 struct iwl_mvm *mvm; 210 struct ieee80211_chanctx_conf *primary; 211 struct ieee80211_chanctx_conf *secondary; 212 bool primary_ll; 213 u8 primary_load; 214 u8 secondary_load; 215 }; 216 217 static inline 218 void iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm *mvm, 219 struct ieee80211_vif *vif, 220 bool enable, int rssi) 221 { 222 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 223 224 mvmvif->bf_data.last_bt_coex_event = rssi; 225 mvmvif->bf_data.bt_coex_max_thold = 226 enable ? -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH : 0; 227 mvmvif->bf_data.bt_coex_min_thold = 228 enable ? -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH : 0; 229 } 230 231 #define MVM_COEX_TCM_PERIOD (HZ * 10) 232 233 static void iwl_mvm_bt_coex_tcm_based_ci(struct iwl_mvm *mvm, 234 struct iwl_bt_iterator_data *data) 235 { 236 unsigned long now = jiffies; 237 238 if (!time_after(now, mvm->bt_coex_last_tcm_ts + MVM_COEX_TCM_PERIOD)) 239 return; 240 241 mvm->bt_coex_last_tcm_ts = now; 242 243 /* We assume here that we don't have more than 2 vifs on 2.4GHz */ 244 245 /* if the primary is low latency, it will stay primary */ 246 if (data->primary_ll) 247 return; 248 249 if (data->primary_load >= data->secondary_load) 250 return; 251 252 swap(data->primary, data->secondary); 253 } 254 255 static void iwl_mvm_bt_notif_per_link(struct iwl_mvm *mvm, 256 struct ieee80211_vif *vif, 257 struct iwl_bt_iterator_data *data, 258 unsigned int link_id) 259 { 260 /* default smps_mode is AUTOMATIC - only used for client modes */ 261 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC; 262 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 263 u32 bt_activity_grading, min_ag_for_static_smps; 264 struct ieee80211_chanctx_conf *chanctx_conf; 265 struct iwl_mvm_vif_link_info *link_info; 266 struct ieee80211_bss_conf *link_conf; 267 int ave_rssi; 268 269 lockdep_assert_held(&mvm->mutex); 270 271 link_info = mvmvif->link[link_id]; 272 if (!link_info) 273 return; 274 275 link_conf = rcu_dereference(vif->link_conf[link_id]); 276 /* This can happen due to races: if we receive the notification 277 * and have the mutex held, while mac80211 is stuck on our mutex 278 * in the middle of removing the link. 279 */ 280 if (!link_conf) 281 return; 282 283 chanctx_conf = rcu_dereference(link_conf->chanctx_conf); 284 285 /* If channel context is invalid or not on 2.4GHz .. */ 286 if ((!chanctx_conf || 287 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ)) { 288 if (vif->type == NL80211_IFTYPE_STATION) { 289 /* ... relax constraints and disable rssi events */ 290 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, 291 smps_mode, link_id); 292 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, 293 false); 294 /* FIXME: should this be per link? */ 295 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0); 296 } 297 return; 298 } 299 300 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2)) 301 min_ag_for_static_smps = BT_VERY_HIGH_TRAFFIC; 302 else 303 min_ag_for_static_smps = BT_HIGH_TRAFFIC; 304 305 bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading); 306 if (bt_activity_grading >= min_ag_for_static_smps) 307 smps_mode = IEEE80211_SMPS_STATIC; 308 else if (bt_activity_grading >= BT_LOW_TRAFFIC) 309 smps_mode = IEEE80211_SMPS_DYNAMIC; 310 311 /* relax SMPS constraints for next association */ 312 if (!vif->cfg.assoc) 313 smps_mode = IEEE80211_SMPS_AUTOMATIC; 314 315 if (link_info->phy_ctxt && 316 (mvm->last_bt_notif.rrc_status & BIT(link_info->phy_ctxt->id))) 317 smps_mode = IEEE80211_SMPS_AUTOMATIC; 318 319 IWL_DEBUG_COEX(data->mvm, 320 "mac %d link %d: bt_activity_grading %d smps_req %d\n", 321 mvmvif->id, link_info->fw_link_id, 322 bt_activity_grading, smps_mode); 323 324 if (vif->type == NL80211_IFTYPE_STATION) 325 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, 326 smps_mode, link_id); 327 328 /* low latency is always primary */ 329 if (iwl_mvm_vif_low_latency(mvmvif)) { 330 data->primary_ll = true; 331 332 data->secondary = data->primary; 333 data->primary = chanctx_conf; 334 } 335 336 if (vif->type == NL80211_IFTYPE_AP) { 337 if (!mvmvif->ap_ibss_active) 338 return; 339 340 if (chanctx_conf == data->primary) 341 return; 342 343 if (!data->primary_ll) { 344 /* 345 * downgrade the current primary no matter what its 346 * type is. 347 */ 348 data->secondary = data->primary; 349 data->primary = chanctx_conf; 350 } else { 351 /* there is low latency vif - we will be secondary */ 352 data->secondary = chanctx_conf; 353 } 354 355 /* FIXME: TCM load per interface? or need something per link? */ 356 if (data->primary == chanctx_conf) 357 data->primary_load = mvm->tcm.result.load[mvmvif->id]; 358 else if (data->secondary == chanctx_conf) 359 data->secondary_load = mvm->tcm.result.load[mvmvif->id]; 360 return; 361 } 362 363 /* 364 * STA / P2P Client, try to be primary if first vif. If we are in low 365 * latency mode, we are already in primary and just don't do much 366 */ 367 if (!data->primary || data->primary == chanctx_conf) 368 data->primary = chanctx_conf; 369 else if (!data->secondary) 370 /* if secondary is not NULL, it might be a GO */ 371 data->secondary = chanctx_conf; 372 373 /* FIXME: TCM load per interface? or need something per link? */ 374 if (data->primary == chanctx_conf) 375 data->primary_load = mvm->tcm.result.load[mvmvif->id]; 376 else if (data->secondary == chanctx_conf) 377 data->secondary_load = mvm->tcm.result.load[mvmvif->id]; 378 /* 379 * don't reduce the Tx power if one of these is true: 380 * we are in LOOSE 381 * BT is inactive 382 * we are not associated 383 */ 384 if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT || 385 le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF || 386 !vif->cfg.assoc) { 387 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, false); 388 /* FIXME: should this be per link? */ 389 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0); 390 return; 391 } 392 393 /* try to get the avg rssi from fw */ 394 ave_rssi = mvmvif->bf_data.ave_beacon_signal; 395 396 /* if the RSSI isn't valid, fake it is very low */ 397 if (!ave_rssi) 398 ave_rssi = -100; 399 if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) { 400 if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, 401 true)) 402 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); 403 } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) { 404 if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, 405 false)) 406 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); 407 } 408 409 /* Begin to monitor the RSSI: it may influence the reduced Tx power */ 410 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi); 411 } 412 413 /* must be called under rcu_read_lock */ 414 static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac, 415 struct ieee80211_vif *vif) 416 { 417 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 418 struct iwl_bt_iterator_data *data = _data; 419 struct iwl_mvm *mvm = data->mvm; 420 unsigned int link_id; 421 422 lockdep_assert_held(&mvm->mutex); 423 424 switch (vif->type) { 425 case NL80211_IFTYPE_STATION: 426 break; 427 case NL80211_IFTYPE_AP: 428 if (!mvmvif->ap_ibss_active) 429 return; 430 break; 431 default: 432 return; 433 } 434 435 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) 436 iwl_mvm_bt_notif_per_link(mvm, vif, data, link_id); 437 } 438 439 static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm) 440 { 441 struct iwl_bt_iterator_data data = { 442 .mvm = mvm, 443 .notif = &mvm->last_bt_notif, 444 }; 445 struct iwl_bt_coex_ci_cmd cmd = {}; 446 u8 ci_bw_idx; 447 448 /* Ignore updates if we are in force mode */ 449 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) 450 return; 451 452 rcu_read_lock(); 453 ieee80211_iterate_active_interfaces_atomic( 454 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 455 iwl_mvm_bt_notif_iterator, &data); 456 457 iwl_mvm_bt_coex_tcm_based_ci(mvm, &data); 458 459 if (data.primary) { 460 struct ieee80211_chanctx_conf *chan = data.primary; 461 if (WARN_ON(!chan->def.chan)) { 462 rcu_read_unlock(); 463 return; 464 } 465 466 if (chan->def.width < NL80211_CHAN_WIDTH_40) { 467 ci_bw_idx = 0; 468 } else { 469 if (chan->def.center_freq1 > 470 chan->def.chan->center_freq) 471 ci_bw_idx = 2; 472 else 473 ci_bw_idx = 1; 474 } 475 476 cmd.bt_primary_ci = 477 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx]; 478 cmd.primary_ch_phy_id = 479 cpu_to_le32(*((u16 *)data.primary->drv_priv)); 480 } 481 482 if (data.secondary) { 483 struct ieee80211_chanctx_conf *chan = data.secondary; 484 if (WARN_ON(!data.secondary->def.chan)) { 485 rcu_read_unlock(); 486 return; 487 } 488 489 if (chan->def.width < NL80211_CHAN_WIDTH_40) { 490 ci_bw_idx = 0; 491 } else { 492 if (chan->def.center_freq1 > 493 chan->def.chan->center_freq) 494 ci_bw_idx = 2; 495 else 496 ci_bw_idx = 1; 497 } 498 499 cmd.bt_secondary_ci = 500 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx]; 501 cmd.secondary_ch_phy_id = 502 cpu_to_le32(*((u16 *)data.secondary->drv_priv)); 503 } 504 505 rcu_read_unlock(); 506 507 /* Don't spam the fw with the same command over and over */ 508 if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) { 509 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0, 510 sizeof(cmd), &cmd)) 511 IWL_ERR(mvm, "Failed to send BT_CI cmd\n"); 512 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd)); 513 } 514 } 515 516 void iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm, 517 struct iwl_rx_cmd_buffer *rxb) 518 { 519 struct iwl_rx_packet *pkt = rxb_addr(rxb); 520 struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data; 521 522 IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n"); 523 IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance); 524 IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n", 525 le32_to_cpu(notif->primary_ch_lut)); 526 IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n", 527 le32_to_cpu(notif->secondary_ch_lut)); 528 IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n", 529 le32_to_cpu(notif->bt_activity_grading)); 530 531 /* remember this notification for future use: rssi fluctuations */ 532 memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif)); 533 534 iwl_mvm_bt_coex_notif_handle(mvm); 535 } 536 537 void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 538 enum ieee80211_rssi_event_data rssi_event) 539 { 540 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 541 int ret; 542 543 lockdep_assert_held(&mvm->mutex); 544 545 /* Ignore updates if we are in force mode */ 546 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) 547 return; 548 549 /* 550 * Rssi update while not associated - can happen since the statistics 551 * are handled asynchronously 552 */ 553 if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA) 554 return; 555 556 /* No BT - reports should be disabled */ 557 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) 558 return; 559 560 IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid, 561 rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW"); 562 563 /* 564 * Check if rssi is good enough for reduced Tx power, but not in loose 565 * scheme. 566 */ 567 if (rssi_event == RSSI_EVENT_LOW || 568 iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT) 569 ret = iwl_mvm_bt_coex_reduced_txp(mvm, 570 mvmvif->deflink.ap_sta_id, 571 false); 572 else 573 ret = iwl_mvm_bt_coex_reduced_txp(mvm, 574 mvmvif->deflink.ap_sta_id, 575 true); 576 577 if (ret) 578 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n"); 579 } 580 581 #define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000) 582 #define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200) 583 584 u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm, 585 struct ieee80211_sta *sta) 586 { 587 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 588 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 589 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt; 590 enum iwl_bt_coex_lut_type lut_type; 591 592 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id)) 593 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 594 595 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 596 BT_HIGH_TRAFFIC) 597 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 598 599 lut_type = iwl_get_coex_type(mvm, mvmsta->vif); 600 601 if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT) 602 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 603 604 /* tight coex, high bt traffic, reduce AGG time limit */ 605 return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT; 606 } 607 608 bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm, 609 struct ieee80211_sta *sta) 610 { 611 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 612 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 613 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt; 614 enum iwl_bt_coex_lut_type lut_type; 615 616 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id)) 617 return true; 618 619 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 620 BT_HIGH_TRAFFIC) 621 return true; 622 623 /* 624 * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas 625 * since BT is already killed. 626 * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while 627 * we Tx. 628 * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO. 629 */ 630 lut_type = iwl_get_coex_type(mvm, mvmsta->vif); 631 return lut_type != BT_COEX_LOOSE_LUT; 632 } 633 634 bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant) 635 { 636 if (ant & mvm->cfg->non_shared_ant) 637 return true; 638 639 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 640 BT_HIGH_TRAFFIC; 641 } 642 643 bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm) 644 { 645 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC; 646 } 647 648 bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm, 649 enum nl80211_band band) 650 { 651 u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading); 652 653 if (band != NL80211_BAND_2GHZ) 654 return false; 655 656 return bt_activity >= BT_LOW_TRAFFIC; 657 } 658 659 u8 iwl_mvm_bt_coex_get_single_ant_msk(struct iwl_mvm *mvm, u8 enabled_ants) 660 { 661 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2) && 662 (mvm->cfg->non_shared_ant & enabled_ants)) 663 return mvm->cfg->non_shared_ant; 664 665 return first_antenna(enabled_ants); 666 } 667 668 u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr, 669 struct ieee80211_tx_info *info, u8 ac) 670 { 671 __le16 fc = hdr->frame_control; 672 bool mplut_enabled = iwl_mvm_is_mplut_supported(mvm); 673 674 if (info->band != NL80211_BAND_2GHZ) 675 return 0; 676 677 if (unlikely(mvm->bt_tx_prio)) 678 return mvm->bt_tx_prio - 1; 679 680 if (likely(ieee80211_is_data(fc))) { 681 if (likely(ieee80211_is_data_qos(fc))) { 682 switch (ac) { 683 case IEEE80211_AC_BE: 684 return mplut_enabled ? 1 : 0; 685 case IEEE80211_AC_VI: 686 return mplut_enabled ? 2 : 3; 687 case IEEE80211_AC_VO: 688 return 3; 689 default: 690 return 0; 691 } 692 } else if (is_multicast_ether_addr(hdr->addr1)) { 693 return 3; 694 } else 695 return 0; 696 } else if (ieee80211_is_mgmt(fc)) { 697 return ieee80211_is_disassoc(fc) ? 0 : 3; 698 } else if (ieee80211_is_ctl(fc)) { 699 /* ignore cfend and cfendack frames as we never send those */ 700 return 3; 701 } 702 703 return 0; 704 } 705 706 void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm) 707 { 708 iwl_mvm_bt_coex_notif_handle(mvm); 709 } 710