1 /****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of version 2 of the GNU General Public License as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * General Public License for more details. 19 * 20 * The full GNU General Public License is included in this distribution 21 * in the file called COPYING. 22 * 23 * Contact Information: 24 * Intel Linux Wireless <linuxwifi@intel.com> 25 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 26 * 27 * BSD LICENSE 28 * 29 * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved. 30 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 31 * All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 37 * * Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * * Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in 41 * the documentation and/or other materials provided with the 42 * distribution. 43 * * Neither the name Intel Corporation nor the names of its 44 * contributors may be used to endorse or promote products derived 45 * from this software without specific prior written permission. 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 48 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 49 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 50 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 51 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 52 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 53 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 54 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 55 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 56 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 57 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 58 * 59 *****************************************************************************/ 60 61 #include <linux/ieee80211.h> 62 #include <linux/etherdevice.h> 63 #include <net/mac80211.h> 64 65 #include "fw/api/coex.h" 66 #include "iwl-modparams.h" 67 #include "mvm.h" 68 #include "iwl-debug.h" 69 70 /* 20MHz / 40MHz below / 40Mhz above*/ 71 static const __le64 iwl_ci_mask[][3] = { 72 /* dummy entry for channel 0 */ 73 {cpu_to_le64(0), cpu_to_le64(0), cpu_to_le64(0)}, 74 { 75 cpu_to_le64(0x0000001FFFULL), 76 cpu_to_le64(0x0ULL), 77 cpu_to_le64(0x00007FFFFFULL), 78 }, 79 { 80 cpu_to_le64(0x000000FFFFULL), 81 cpu_to_le64(0x0ULL), 82 cpu_to_le64(0x0003FFFFFFULL), 83 }, 84 { 85 cpu_to_le64(0x000003FFFCULL), 86 cpu_to_le64(0x0ULL), 87 cpu_to_le64(0x000FFFFFFCULL), 88 }, 89 { 90 cpu_to_le64(0x00001FFFE0ULL), 91 cpu_to_le64(0x0ULL), 92 cpu_to_le64(0x007FFFFFE0ULL), 93 }, 94 { 95 cpu_to_le64(0x00007FFF80ULL), 96 cpu_to_le64(0x00007FFFFFULL), 97 cpu_to_le64(0x01FFFFFF80ULL), 98 }, 99 { 100 cpu_to_le64(0x0003FFFC00ULL), 101 cpu_to_le64(0x0003FFFFFFULL), 102 cpu_to_le64(0x0FFFFFFC00ULL), 103 }, 104 { 105 cpu_to_le64(0x000FFFF000ULL), 106 cpu_to_le64(0x000FFFFFFCULL), 107 cpu_to_le64(0x3FFFFFF000ULL), 108 }, 109 { 110 cpu_to_le64(0x007FFF8000ULL), 111 cpu_to_le64(0x007FFFFFE0ULL), 112 cpu_to_le64(0xFFFFFF8000ULL), 113 }, 114 { 115 cpu_to_le64(0x01FFFE0000ULL), 116 cpu_to_le64(0x01FFFFFF80ULL), 117 cpu_to_le64(0xFFFFFE0000ULL), 118 }, 119 { 120 cpu_to_le64(0x0FFFF00000ULL), 121 cpu_to_le64(0x0FFFFFFC00ULL), 122 cpu_to_le64(0x0ULL), 123 }, 124 { 125 cpu_to_le64(0x3FFFC00000ULL), 126 cpu_to_le64(0x3FFFFFF000ULL), 127 cpu_to_le64(0x0) 128 }, 129 { 130 cpu_to_le64(0xFFFE000000ULL), 131 cpu_to_le64(0xFFFFFF8000ULL), 132 cpu_to_le64(0x0) 133 }, 134 { 135 cpu_to_le64(0xFFF8000000ULL), 136 cpu_to_le64(0xFFFFFE0000ULL), 137 cpu_to_le64(0x0) 138 }, 139 { 140 cpu_to_le64(0xFE00000000ULL), 141 cpu_to_le64(0x0ULL), 142 cpu_to_le64(0x0ULL) 143 }, 144 }; 145 146 static enum iwl_bt_coex_lut_type 147 iwl_get_coex_type(struct iwl_mvm *mvm, const struct ieee80211_vif *vif) 148 { 149 struct ieee80211_chanctx_conf *chanctx_conf; 150 enum iwl_bt_coex_lut_type ret; 151 u16 phy_ctx_id; 152 u32 primary_ch_phy_id, secondary_ch_phy_id; 153 154 /* 155 * Checking that we hold mvm->mutex is a good idea, but the rate 156 * control can't acquire the mutex since it runs in Tx path. 157 * So this is racy in that case, but in the worst case, the AMPDU 158 * size limit will be wrong for a short time which is not a big 159 * issue. 160 */ 161 162 rcu_read_lock(); 163 164 chanctx_conf = rcu_dereference(vif->chanctx_conf); 165 166 if (!chanctx_conf || 167 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ) { 168 rcu_read_unlock(); 169 return BT_COEX_INVALID_LUT; 170 } 171 172 ret = BT_COEX_TX_DIS_LUT; 173 174 if (mvm->cfg->bt_shared_single_ant) { 175 rcu_read_unlock(); 176 return ret; 177 } 178 179 phy_ctx_id = *((u16 *)chanctx_conf->drv_priv); 180 primary_ch_phy_id = le32_to_cpu(mvm->last_bt_ci_cmd.primary_ch_phy_id); 181 secondary_ch_phy_id = 182 le32_to_cpu(mvm->last_bt_ci_cmd.secondary_ch_phy_id); 183 184 if (primary_ch_phy_id == phy_ctx_id) 185 ret = le32_to_cpu(mvm->last_bt_notif.primary_ch_lut); 186 else if (secondary_ch_phy_id == phy_ctx_id) 187 ret = le32_to_cpu(mvm->last_bt_notif.secondary_ch_lut); 188 /* else - default = TX TX disallowed */ 189 190 rcu_read_unlock(); 191 192 return ret; 193 } 194 195 int iwl_mvm_send_bt_init_conf(struct iwl_mvm *mvm) 196 { 197 struct iwl_bt_coex_cmd bt_cmd = {}; 198 u32 mode; 199 200 lockdep_assert_held(&mvm->mutex); 201 202 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) { 203 switch (mvm->bt_force_ant_mode) { 204 case BT_FORCE_ANT_BT: 205 mode = BT_COEX_BT; 206 break; 207 case BT_FORCE_ANT_WIFI: 208 mode = BT_COEX_WIFI; 209 break; 210 default: 211 WARN_ON(1); 212 mode = 0; 213 } 214 215 bt_cmd.mode = cpu_to_le32(mode); 216 goto send_cmd; 217 } 218 219 mode = iwlwifi_mod_params.bt_coex_active ? BT_COEX_NW : BT_COEX_DISABLE; 220 bt_cmd.mode = cpu_to_le32(mode); 221 222 if (IWL_MVM_BT_COEX_SYNC2SCO) 223 bt_cmd.enabled_modules |= 224 cpu_to_le32(BT_COEX_SYNC2SCO_ENABLED); 225 226 if (iwl_mvm_is_mplut_supported(mvm)) 227 bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_MPLUT_ENABLED); 228 229 bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_HIGH_BAND_RET); 230 231 send_cmd: 232 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 233 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 234 235 return iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, 0, sizeof(bt_cmd), &bt_cmd); 236 } 237 238 static int iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm *mvm, u8 sta_id, 239 bool enable) 240 { 241 struct iwl_bt_coex_reduced_txp_update_cmd cmd = {}; 242 struct iwl_mvm_sta *mvmsta; 243 u32 value; 244 245 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 246 if (!mvmsta) 247 return 0; 248 249 /* nothing to do */ 250 if (mvmsta->bt_reduced_txpower == enable) 251 return 0; 252 253 value = mvmsta->sta_id; 254 255 if (enable) 256 value |= BT_REDUCED_TX_POWER_BIT; 257 258 IWL_DEBUG_COEX(mvm, "%sable reduced Tx Power for sta %d\n", 259 enable ? "en" : "dis", sta_id); 260 261 cmd.reduced_txp = cpu_to_le32(value); 262 mvmsta->bt_reduced_txpower = enable; 263 264 return iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_REDUCED_TXP, 265 CMD_ASYNC, sizeof(cmd), &cmd); 266 } 267 268 struct iwl_bt_iterator_data { 269 struct iwl_bt_coex_profile_notif *notif; 270 struct iwl_mvm *mvm; 271 struct ieee80211_chanctx_conf *primary; 272 struct ieee80211_chanctx_conf *secondary; 273 bool primary_ll; 274 u8 primary_load; 275 u8 secondary_load; 276 }; 277 278 static inline 279 void iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm *mvm, 280 struct ieee80211_vif *vif, 281 bool enable, int rssi) 282 { 283 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 284 285 mvmvif->bf_data.last_bt_coex_event = rssi; 286 mvmvif->bf_data.bt_coex_max_thold = 287 enable ? -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH : 0; 288 mvmvif->bf_data.bt_coex_min_thold = 289 enable ? -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH : 0; 290 } 291 292 #define MVM_COEX_TCM_PERIOD (HZ * 10) 293 294 static void iwl_mvm_bt_coex_tcm_based_ci(struct iwl_mvm *mvm, 295 struct iwl_bt_iterator_data *data) 296 { 297 unsigned long now = jiffies; 298 299 if (!time_after(now, mvm->bt_coex_last_tcm_ts + MVM_COEX_TCM_PERIOD)) 300 return; 301 302 mvm->bt_coex_last_tcm_ts = now; 303 304 /* We assume here that we don't have more than 2 vifs on 2.4GHz */ 305 306 /* if the primary is low latency, it will stay primary */ 307 if (data->primary_ll) 308 return; 309 310 if (data->primary_load >= data->secondary_load) 311 return; 312 313 swap(data->primary, data->secondary); 314 } 315 316 /* must be called under rcu_read_lock */ 317 static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac, 318 struct ieee80211_vif *vif) 319 { 320 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 321 struct iwl_bt_iterator_data *data = _data; 322 struct iwl_mvm *mvm = data->mvm; 323 struct ieee80211_chanctx_conf *chanctx_conf; 324 /* default smps_mode is AUTOMATIC - only used for client modes */ 325 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC; 326 u32 bt_activity_grading, min_ag_for_static_smps; 327 int ave_rssi; 328 329 lockdep_assert_held(&mvm->mutex); 330 331 switch (vif->type) { 332 case NL80211_IFTYPE_STATION: 333 break; 334 case NL80211_IFTYPE_AP: 335 if (!mvmvif->ap_ibss_active) 336 return; 337 break; 338 default: 339 return; 340 } 341 342 chanctx_conf = rcu_dereference(vif->chanctx_conf); 343 344 /* If channel context is invalid or not on 2.4GHz .. */ 345 if ((!chanctx_conf || 346 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ)) { 347 if (vif->type == NL80211_IFTYPE_STATION) { 348 /* ... relax constraints and disable rssi events */ 349 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, 350 smps_mode); 351 iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, 352 false); 353 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0); 354 } 355 return; 356 } 357 358 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2)) 359 min_ag_for_static_smps = BT_VERY_HIGH_TRAFFIC; 360 else 361 min_ag_for_static_smps = BT_HIGH_TRAFFIC; 362 363 bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading); 364 if (bt_activity_grading >= min_ag_for_static_smps) 365 smps_mode = IEEE80211_SMPS_STATIC; 366 else if (bt_activity_grading >= BT_LOW_TRAFFIC) 367 smps_mode = IEEE80211_SMPS_DYNAMIC; 368 369 /* relax SMPS constraints for next association */ 370 if (!vif->bss_conf.assoc) 371 smps_mode = IEEE80211_SMPS_AUTOMATIC; 372 373 if (mvmvif->phy_ctxt && 374 (mvm->last_bt_notif.rrc_status & BIT(mvmvif->phy_ctxt->id))) 375 smps_mode = IEEE80211_SMPS_AUTOMATIC; 376 377 IWL_DEBUG_COEX(data->mvm, 378 "mac %d: bt_activity_grading %d smps_req %d\n", 379 mvmvif->id, bt_activity_grading, smps_mode); 380 381 if (vif->type == NL80211_IFTYPE_STATION) 382 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, 383 smps_mode); 384 385 /* low latency is always primary */ 386 if (iwl_mvm_vif_low_latency(mvmvif)) { 387 data->primary_ll = true; 388 389 data->secondary = data->primary; 390 data->primary = chanctx_conf; 391 } 392 393 if (vif->type == NL80211_IFTYPE_AP) { 394 if (!mvmvif->ap_ibss_active) 395 return; 396 397 if (chanctx_conf == data->primary) 398 return; 399 400 if (!data->primary_ll) { 401 /* 402 * downgrade the current primary no matter what its 403 * type is. 404 */ 405 data->secondary = data->primary; 406 data->primary = chanctx_conf; 407 } else { 408 /* there is low latency vif - we will be secondary */ 409 data->secondary = chanctx_conf; 410 } 411 412 if (data->primary == chanctx_conf) 413 data->primary_load = mvm->tcm.result.load[mvmvif->id]; 414 else if (data->secondary == chanctx_conf) 415 data->secondary_load = mvm->tcm.result.load[mvmvif->id]; 416 return; 417 } 418 419 /* 420 * STA / P2P Client, try to be primary if first vif. If we are in low 421 * latency mode, we are already in primary and just don't do much 422 */ 423 if (!data->primary || data->primary == chanctx_conf) 424 data->primary = chanctx_conf; 425 else if (!data->secondary) 426 /* if secondary is not NULL, it might be a GO */ 427 data->secondary = chanctx_conf; 428 429 if (data->primary == chanctx_conf) 430 data->primary_load = mvm->tcm.result.load[mvmvif->id]; 431 else if (data->secondary == chanctx_conf) 432 data->secondary_load = mvm->tcm.result.load[mvmvif->id]; 433 /* 434 * don't reduce the Tx power if one of these is true: 435 * we are in LOOSE 436 * single share antenna product 437 * BT is inactive 438 * we are not associated 439 */ 440 if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT || 441 mvm->cfg->bt_shared_single_ant || !vif->bss_conf.assoc || 442 le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) { 443 iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false); 444 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0); 445 return; 446 } 447 448 /* try to get the avg rssi from fw */ 449 ave_rssi = mvmvif->bf_data.ave_beacon_signal; 450 451 /* if the RSSI isn't valid, fake it is very low */ 452 if (!ave_rssi) 453 ave_rssi = -100; 454 if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) { 455 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true)) 456 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); 457 } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) { 458 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false)) 459 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); 460 } 461 462 /* Begin to monitor the RSSI: it may influence the reduced Tx power */ 463 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi); 464 } 465 466 static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm) 467 { 468 struct iwl_bt_iterator_data data = { 469 .mvm = mvm, 470 .notif = &mvm->last_bt_notif, 471 }; 472 struct iwl_bt_coex_ci_cmd cmd = {}; 473 u8 ci_bw_idx; 474 475 /* Ignore updates if we are in force mode */ 476 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) 477 return; 478 479 rcu_read_lock(); 480 ieee80211_iterate_active_interfaces_atomic( 481 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 482 iwl_mvm_bt_notif_iterator, &data); 483 484 iwl_mvm_bt_coex_tcm_based_ci(mvm, &data); 485 486 if (data.primary) { 487 struct ieee80211_chanctx_conf *chan = data.primary; 488 if (WARN_ON(!chan->def.chan)) { 489 rcu_read_unlock(); 490 return; 491 } 492 493 if (chan->def.width < NL80211_CHAN_WIDTH_40) { 494 ci_bw_idx = 0; 495 } else { 496 if (chan->def.center_freq1 > 497 chan->def.chan->center_freq) 498 ci_bw_idx = 2; 499 else 500 ci_bw_idx = 1; 501 } 502 503 cmd.bt_primary_ci = 504 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx]; 505 cmd.primary_ch_phy_id = 506 cpu_to_le32(*((u16 *)data.primary->drv_priv)); 507 } 508 509 if (data.secondary) { 510 struct ieee80211_chanctx_conf *chan = data.secondary; 511 if (WARN_ON(!data.secondary->def.chan)) { 512 rcu_read_unlock(); 513 return; 514 } 515 516 if (chan->def.width < NL80211_CHAN_WIDTH_40) { 517 ci_bw_idx = 0; 518 } else { 519 if (chan->def.center_freq1 > 520 chan->def.chan->center_freq) 521 ci_bw_idx = 2; 522 else 523 ci_bw_idx = 1; 524 } 525 526 cmd.bt_secondary_ci = 527 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx]; 528 cmd.secondary_ch_phy_id = 529 cpu_to_le32(*((u16 *)data.secondary->drv_priv)); 530 } 531 532 rcu_read_unlock(); 533 534 /* Don't spam the fw with the same command over and over */ 535 if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) { 536 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0, 537 sizeof(cmd), &cmd)) 538 IWL_ERR(mvm, "Failed to send BT_CI cmd\n"); 539 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd)); 540 } 541 } 542 543 void iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm, 544 struct iwl_rx_cmd_buffer *rxb) 545 { 546 struct iwl_rx_packet *pkt = rxb_addr(rxb); 547 struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data; 548 549 IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n"); 550 IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance); 551 IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n", 552 le32_to_cpu(notif->primary_ch_lut)); 553 IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n", 554 le32_to_cpu(notif->secondary_ch_lut)); 555 IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n", 556 le32_to_cpu(notif->bt_activity_grading)); 557 558 /* remember this notification for future use: rssi fluctuations */ 559 memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif)); 560 561 iwl_mvm_bt_coex_notif_handle(mvm); 562 } 563 564 void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 565 enum ieee80211_rssi_event_data rssi_event) 566 { 567 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 568 int ret; 569 570 lockdep_assert_held(&mvm->mutex); 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 /* 577 * Rssi update while not associated - can happen since the statistics 578 * are handled asynchronously 579 */ 580 if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) 581 return; 582 583 /* No BT - reports should be disabled */ 584 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) 585 return; 586 587 IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid, 588 rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW"); 589 590 /* 591 * Check if rssi is good enough for reduced Tx power, but not in loose 592 * scheme. 593 */ 594 if (rssi_event == RSSI_EVENT_LOW || mvm->cfg->bt_shared_single_ant || 595 iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT) 596 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, 597 false); 598 else 599 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true); 600 601 if (ret) 602 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n"); 603 } 604 605 #define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000) 606 #define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200) 607 608 u16 iwl_mvm_coex_agg_time_limit(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->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 LINK_QUAL_AGG_TIME_LIMIT_DEF; 618 619 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 620 BT_HIGH_TRAFFIC) 621 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 622 623 lut_type = iwl_get_coex_type(mvm, mvmsta->vif); 624 625 if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT) 626 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 627 628 /* tight coex, high bt traffic, reduce AGG time limit */ 629 return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT; 630 } 631 632 bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm, 633 struct ieee80211_sta *sta) 634 { 635 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 636 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 637 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->phy_ctxt; 638 enum iwl_bt_coex_lut_type lut_type; 639 640 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id)) 641 return true; 642 643 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 644 BT_HIGH_TRAFFIC) 645 return true; 646 647 /* 648 * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas 649 * since BT is already killed. 650 * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while 651 * we Tx. 652 * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO. 653 */ 654 lut_type = iwl_get_coex_type(mvm, mvmsta->vif); 655 return lut_type != BT_COEX_LOOSE_LUT; 656 } 657 658 bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant) 659 { 660 /* there is no other antenna, shared antenna is always available */ 661 if (mvm->cfg->bt_shared_single_ant) 662 return true; 663 664 if (ant & mvm->cfg->non_shared_ant) 665 return true; 666 667 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 668 BT_HIGH_TRAFFIC; 669 } 670 671 bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm) 672 { 673 /* there is no other antenna, shared antenna is always available */ 674 if (mvm->cfg->bt_shared_single_ant) 675 return true; 676 677 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC; 678 } 679 680 bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm, 681 enum nl80211_band band) 682 { 683 u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading); 684 685 if (band != NL80211_BAND_2GHZ) 686 return false; 687 688 return bt_activity >= BT_LOW_TRAFFIC; 689 } 690 691 u8 iwl_mvm_bt_coex_get_single_ant_msk(struct iwl_mvm *mvm, u8 enabled_ants) 692 { 693 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2) && 694 (mvm->cfg->non_shared_ant & enabled_ants)) 695 return mvm->cfg->non_shared_ant; 696 697 return first_antenna(enabled_ants); 698 } 699 700 u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr, 701 struct ieee80211_tx_info *info, u8 ac) 702 { 703 __le16 fc = hdr->frame_control; 704 bool mplut_enabled = iwl_mvm_is_mplut_supported(mvm); 705 706 if (info->band != NL80211_BAND_2GHZ) 707 return 0; 708 709 if (unlikely(mvm->bt_tx_prio)) 710 return mvm->bt_tx_prio - 1; 711 712 if (likely(ieee80211_is_data(fc))) { 713 if (likely(ieee80211_is_data_qos(fc))) { 714 switch (ac) { 715 case IEEE80211_AC_BE: 716 return mplut_enabled ? 1 : 0; 717 case IEEE80211_AC_VI: 718 return mplut_enabled ? 2 : 3; 719 case IEEE80211_AC_VO: 720 return 3; 721 default: 722 return 0; 723 } 724 } else if (is_multicast_ether_addr(hdr->addr1)) { 725 return 3; 726 } else 727 return 0; 728 } else if (ieee80211_is_mgmt(fc)) { 729 return ieee80211_is_disassoc(fc) ? 0 : 3; 730 } else if (ieee80211_is_ctl(fc)) { 731 /* ignore cfend and cfendack frames as we never send those */ 732 return 3; 733 } 734 735 return 0; 736 } 737 738 void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm) 739 { 740 iwl_mvm_bt_coex_notif_handle(mvm); 741 } 742