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 * Copyright(c) 2017 Intel Deutschland GmbH 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of version 2 of the GNU General Public License as 14 * published by the Free Software Foundation. 15 * 16 * This program is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 24 * USA 25 * 26 * The full GNU General Public License is included in this distribution 27 * in the file called COPYING. 28 * 29 * Contact Information: 30 * Intel Linux Wireless <linuxwifi@intel.com> 31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 32 * 33 * BSD LICENSE 34 * 35 * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved. 36 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 37 * Copyright(c) 2017 Intel Deutschland GmbH 38 * All rights reserved. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 44 * * Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * * Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in 48 * the documentation and/or other materials provided with the 49 * distribution. 50 * * Neither the name Intel Corporation nor the names of its 51 * contributors may be used to endorse or promote products derived 52 * from this software without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 65 * 66 *****************************************************************************/ 67 68 #include <linux/ieee80211.h> 69 #include <linux/etherdevice.h> 70 #include <net/mac80211.h> 71 72 #include "fw/api/coex.h" 73 #include "iwl-modparams.h" 74 #include "mvm.h" 75 #include "iwl-debug.h" 76 77 /* 20MHz / 40MHz below / 40Mhz above*/ 78 static const __le64 iwl_ci_mask[][3] = { 79 /* dummy entry for channel 0 */ 80 {cpu_to_le64(0), cpu_to_le64(0), cpu_to_le64(0)}, 81 { 82 cpu_to_le64(0x0000001FFFULL), 83 cpu_to_le64(0x0ULL), 84 cpu_to_le64(0x00007FFFFFULL), 85 }, 86 { 87 cpu_to_le64(0x000000FFFFULL), 88 cpu_to_le64(0x0ULL), 89 cpu_to_le64(0x0003FFFFFFULL), 90 }, 91 { 92 cpu_to_le64(0x000003FFFCULL), 93 cpu_to_le64(0x0ULL), 94 cpu_to_le64(0x000FFFFFFCULL), 95 }, 96 { 97 cpu_to_le64(0x00001FFFE0ULL), 98 cpu_to_le64(0x0ULL), 99 cpu_to_le64(0x007FFFFFE0ULL), 100 }, 101 { 102 cpu_to_le64(0x00007FFF80ULL), 103 cpu_to_le64(0x00007FFFFFULL), 104 cpu_to_le64(0x01FFFFFF80ULL), 105 }, 106 { 107 cpu_to_le64(0x0003FFFC00ULL), 108 cpu_to_le64(0x0003FFFFFFULL), 109 cpu_to_le64(0x0FFFFFFC00ULL), 110 }, 111 { 112 cpu_to_le64(0x000FFFF000ULL), 113 cpu_to_le64(0x000FFFFFFCULL), 114 cpu_to_le64(0x3FFFFFF000ULL), 115 }, 116 { 117 cpu_to_le64(0x007FFF8000ULL), 118 cpu_to_le64(0x007FFFFFE0ULL), 119 cpu_to_le64(0xFFFFFF8000ULL), 120 }, 121 { 122 cpu_to_le64(0x01FFFE0000ULL), 123 cpu_to_le64(0x01FFFFFF80ULL), 124 cpu_to_le64(0xFFFFFE0000ULL), 125 }, 126 { 127 cpu_to_le64(0x0FFFF00000ULL), 128 cpu_to_le64(0x0FFFFFFC00ULL), 129 cpu_to_le64(0x0ULL), 130 }, 131 { 132 cpu_to_le64(0x3FFFC00000ULL), 133 cpu_to_le64(0x3FFFFFF000ULL), 134 cpu_to_le64(0x0) 135 }, 136 { 137 cpu_to_le64(0xFFFE000000ULL), 138 cpu_to_le64(0xFFFFFF8000ULL), 139 cpu_to_le64(0x0) 140 }, 141 { 142 cpu_to_le64(0xFFF8000000ULL), 143 cpu_to_le64(0xFFFFFE0000ULL), 144 cpu_to_le64(0x0) 145 }, 146 { 147 cpu_to_le64(0xFE00000000ULL), 148 cpu_to_le64(0x0ULL), 149 cpu_to_le64(0x0ULL) 150 }, 151 }; 152 153 static enum iwl_bt_coex_lut_type 154 iwl_get_coex_type(struct iwl_mvm *mvm, const struct ieee80211_vif *vif) 155 { 156 struct ieee80211_chanctx_conf *chanctx_conf; 157 enum iwl_bt_coex_lut_type ret; 158 u16 phy_ctx_id; 159 u32 primary_ch_phy_id, secondary_ch_phy_id; 160 161 /* 162 * Checking that we hold mvm->mutex is a good idea, but the rate 163 * control can't acquire the mutex since it runs in Tx path. 164 * So this is racy in that case, but in the worst case, the AMPDU 165 * size limit will be wrong for a short time which is not a big 166 * issue. 167 */ 168 169 rcu_read_lock(); 170 171 chanctx_conf = rcu_dereference(vif->chanctx_conf); 172 173 if (!chanctx_conf || 174 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ) { 175 rcu_read_unlock(); 176 return BT_COEX_INVALID_LUT; 177 } 178 179 ret = BT_COEX_TX_DIS_LUT; 180 181 if (mvm->cfg->bt_shared_single_ant) { 182 rcu_read_unlock(); 183 return ret; 184 } 185 186 phy_ctx_id = *((u16 *)chanctx_conf->drv_priv); 187 primary_ch_phy_id = le32_to_cpu(mvm->last_bt_ci_cmd.primary_ch_phy_id); 188 secondary_ch_phy_id = 189 le32_to_cpu(mvm->last_bt_ci_cmd.secondary_ch_phy_id); 190 191 if (primary_ch_phy_id == phy_ctx_id) 192 ret = le32_to_cpu(mvm->last_bt_notif.primary_ch_lut); 193 else if (secondary_ch_phy_id == phy_ctx_id) 194 ret = le32_to_cpu(mvm->last_bt_notif.secondary_ch_lut); 195 /* else - default = TX TX disallowed */ 196 197 rcu_read_unlock(); 198 199 return ret; 200 } 201 202 int iwl_mvm_send_bt_init_conf(struct iwl_mvm *mvm) 203 { 204 struct iwl_bt_coex_cmd bt_cmd = {}; 205 u32 mode; 206 207 lockdep_assert_held(&mvm->mutex); 208 209 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) { 210 switch (mvm->bt_force_ant_mode) { 211 case BT_FORCE_ANT_BT: 212 mode = BT_COEX_BT; 213 break; 214 case BT_FORCE_ANT_WIFI: 215 mode = BT_COEX_WIFI; 216 break; 217 default: 218 WARN_ON(1); 219 mode = 0; 220 } 221 222 bt_cmd.mode = cpu_to_le32(mode); 223 goto send_cmd; 224 } 225 226 mode = iwlwifi_mod_params.bt_coex_active ? BT_COEX_NW : BT_COEX_DISABLE; 227 bt_cmd.mode = cpu_to_le32(mode); 228 229 if (IWL_MVM_BT_COEX_SYNC2SCO) 230 bt_cmd.enabled_modules |= 231 cpu_to_le32(BT_COEX_SYNC2SCO_ENABLED); 232 233 if (iwl_mvm_is_mplut_supported(mvm)) 234 bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_MPLUT_ENABLED); 235 236 bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_HIGH_BAND_RET); 237 238 send_cmd: 239 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 240 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 241 242 return iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, 0, sizeof(bt_cmd), &bt_cmd); 243 } 244 245 static int iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm *mvm, u8 sta_id, 246 bool enable) 247 { 248 struct iwl_bt_coex_reduced_txp_update_cmd cmd = {}; 249 struct iwl_mvm_sta *mvmsta; 250 u32 value; 251 int ret; 252 253 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 254 if (!mvmsta) 255 return 0; 256 257 /* nothing to do */ 258 if (mvmsta->bt_reduced_txpower == enable) 259 return 0; 260 261 value = mvmsta->sta_id; 262 263 if (enable) 264 value |= BT_REDUCED_TX_POWER_BIT; 265 266 IWL_DEBUG_COEX(mvm, "%sable reduced Tx Power for sta %d\n", 267 enable ? "en" : "dis", sta_id); 268 269 cmd.reduced_txp = cpu_to_le32(value); 270 mvmsta->bt_reduced_txpower = enable; 271 272 ret = iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_REDUCED_TXP, CMD_ASYNC, 273 sizeof(cmd), &cmd); 274 275 return ret; 276 } 277 278 struct iwl_bt_iterator_data { 279 struct iwl_bt_coex_profile_notif *notif; 280 struct iwl_mvm *mvm; 281 struct ieee80211_chanctx_conf *primary; 282 struct ieee80211_chanctx_conf *secondary; 283 bool primary_ll; 284 }; 285 286 static inline 287 void iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm *mvm, 288 struct ieee80211_vif *vif, 289 bool enable, int rssi) 290 { 291 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 292 293 mvmvif->bf_data.last_bt_coex_event = rssi; 294 mvmvif->bf_data.bt_coex_max_thold = 295 enable ? -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH : 0; 296 mvmvif->bf_data.bt_coex_min_thold = 297 enable ? -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH : 0; 298 } 299 300 /* must be called under rcu_read_lock */ 301 static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac, 302 struct ieee80211_vif *vif) 303 { 304 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 305 struct iwl_bt_iterator_data *data = _data; 306 struct iwl_mvm *mvm = data->mvm; 307 struct ieee80211_chanctx_conf *chanctx_conf; 308 /* default smps_mode is AUTOMATIC - only used for client modes */ 309 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC; 310 u32 bt_activity_grading; 311 int ave_rssi; 312 313 lockdep_assert_held(&mvm->mutex); 314 315 switch (vif->type) { 316 case NL80211_IFTYPE_STATION: 317 break; 318 case NL80211_IFTYPE_AP: 319 if (!mvmvif->ap_ibss_active) 320 return; 321 break; 322 default: 323 return; 324 } 325 326 chanctx_conf = rcu_dereference(vif->chanctx_conf); 327 328 /* If channel context is invalid or not on 2.4GHz .. */ 329 if ((!chanctx_conf || 330 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ)) { 331 if (vif->type == NL80211_IFTYPE_STATION) { 332 /* ... relax constraints and disable rssi events */ 333 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, 334 smps_mode); 335 iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, 336 false); 337 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0); 338 } 339 return; 340 } 341 342 bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading); 343 if (bt_activity_grading >= BT_HIGH_TRAFFIC) 344 smps_mode = IEEE80211_SMPS_STATIC; 345 else if (bt_activity_grading >= BT_LOW_TRAFFIC) 346 smps_mode = IEEE80211_SMPS_DYNAMIC; 347 348 /* relax SMPS constraints for next association */ 349 if (!vif->bss_conf.assoc) 350 smps_mode = IEEE80211_SMPS_AUTOMATIC; 351 352 if (mvmvif->phy_ctxt && 353 (mvm->last_bt_notif.rrc_status & BIT(mvmvif->phy_ctxt->id))) 354 smps_mode = IEEE80211_SMPS_AUTOMATIC; 355 356 IWL_DEBUG_COEX(data->mvm, 357 "mac %d: bt_activity_grading %d smps_req %d\n", 358 mvmvif->id, bt_activity_grading, smps_mode); 359 360 if (vif->type == NL80211_IFTYPE_STATION) 361 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, 362 smps_mode); 363 364 /* low latency is always primary */ 365 if (iwl_mvm_vif_low_latency(mvmvif)) { 366 data->primary_ll = true; 367 368 data->secondary = data->primary; 369 data->primary = chanctx_conf; 370 } 371 372 if (vif->type == NL80211_IFTYPE_AP) { 373 if (!mvmvif->ap_ibss_active) 374 return; 375 376 if (chanctx_conf == data->primary) 377 return; 378 379 if (!data->primary_ll) { 380 /* 381 * downgrade the current primary no matter what its 382 * type is. 383 */ 384 data->secondary = data->primary; 385 data->primary = chanctx_conf; 386 } else { 387 /* there is low latency vif - we will be secondary */ 388 data->secondary = chanctx_conf; 389 } 390 return; 391 } 392 393 /* 394 * STA / P2P Client, try to be primary if first vif. If we are in low 395 * latency mode, we are already in primary and just don't do much 396 */ 397 if (!data->primary || data->primary == chanctx_conf) 398 data->primary = chanctx_conf; 399 else if (!data->secondary) 400 /* if secondary is not NULL, it might be a GO */ 401 data->secondary = chanctx_conf; 402 403 /* 404 * don't reduce the Tx power if one of these is true: 405 * we are in LOOSE 406 * single share antenna product 407 * BT is inactive 408 * we are not associated 409 */ 410 if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT || 411 mvm->cfg->bt_shared_single_ant || !vif->bss_conf.assoc || 412 le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) { 413 iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false); 414 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0); 415 return; 416 } 417 418 /* try to get the avg rssi from fw */ 419 ave_rssi = mvmvif->bf_data.ave_beacon_signal; 420 421 /* if the RSSI isn't valid, fake it is very low */ 422 if (!ave_rssi) 423 ave_rssi = -100; 424 if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) { 425 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true)) 426 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); 427 } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) { 428 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false)) 429 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); 430 } 431 432 /* Begin to monitor the RSSI: it may influence the reduced Tx power */ 433 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi); 434 } 435 436 static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm) 437 { 438 struct iwl_bt_iterator_data data = { 439 .mvm = mvm, 440 .notif = &mvm->last_bt_notif, 441 }; 442 struct iwl_bt_coex_ci_cmd cmd = {}; 443 u8 ci_bw_idx; 444 445 /* Ignore updates if we are in force mode */ 446 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) 447 return; 448 449 rcu_read_lock(); 450 ieee80211_iterate_active_interfaces_atomic( 451 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 452 iwl_mvm_bt_notif_iterator, &data); 453 454 if (data.primary) { 455 struct ieee80211_chanctx_conf *chan = data.primary; 456 if (WARN_ON(!chan->def.chan)) { 457 rcu_read_unlock(); 458 return; 459 } 460 461 if (chan->def.width < NL80211_CHAN_WIDTH_40) { 462 ci_bw_idx = 0; 463 } else { 464 if (chan->def.center_freq1 > 465 chan->def.chan->center_freq) 466 ci_bw_idx = 2; 467 else 468 ci_bw_idx = 1; 469 } 470 471 cmd.bt_primary_ci = 472 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx]; 473 cmd.primary_ch_phy_id = 474 cpu_to_le32(*((u16 *)data.primary->drv_priv)); 475 } 476 477 if (data.secondary) { 478 struct ieee80211_chanctx_conf *chan = data.secondary; 479 if (WARN_ON(!data.secondary->def.chan)) { 480 rcu_read_unlock(); 481 return; 482 } 483 484 if (chan->def.width < NL80211_CHAN_WIDTH_40) { 485 ci_bw_idx = 0; 486 } else { 487 if (chan->def.center_freq1 > 488 chan->def.chan->center_freq) 489 ci_bw_idx = 2; 490 else 491 ci_bw_idx = 1; 492 } 493 494 cmd.bt_secondary_ci = 495 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx]; 496 cmd.secondary_ch_phy_id = 497 cpu_to_le32(*((u16 *)data.secondary->drv_priv)); 498 } 499 500 rcu_read_unlock(); 501 502 /* Don't spam the fw with the same command over and over */ 503 if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) { 504 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0, 505 sizeof(cmd), &cmd)) 506 IWL_ERR(mvm, "Failed to send BT_CI cmd\n"); 507 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd)); 508 } 509 } 510 511 void iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm, 512 struct iwl_rx_cmd_buffer *rxb) 513 { 514 struct iwl_rx_packet *pkt = rxb_addr(rxb); 515 struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data; 516 517 if (!iwl_mvm_has_new_ats_coex_api(mvm)) { 518 struct iwl_bt_coex_profile_notif_v4 *v4 = (void *)pkt->data; 519 520 mvm->last_bt_notif.mbox_msg[0] = v4->mbox_msg[0]; 521 mvm->last_bt_notif.mbox_msg[1] = v4->mbox_msg[1]; 522 mvm->last_bt_notif.mbox_msg[2] = v4->mbox_msg[2]; 523 mvm->last_bt_notif.mbox_msg[3] = v4->mbox_msg[3]; 524 mvm->last_bt_notif.msg_idx = v4->msg_idx; 525 mvm->last_bt_notif.bt_ci_compliance = v4->bt_ci_compliance; 526 mvm->last_bt_notif.primary_ch_lut = v4->primary_ch_lut; 527 mvm->last_bt_notif.secondary_ch_lut = v4->secondary_ch_lut; 528 mvm->last_bt_notif.bt_activity_grading = 529 v4->bt_activity_grading; 530 mvm->last_bt_notif.ttc_status = v4->ttc_status; 531 mvm->last_bt_notif.rrc_status = v4->rrc_status; 532 } else { 533 /* save this notification for future use: rssi fluctuations */ 534 memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif)); 535 } 536 537 IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n"); 538 IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", 539 mvm->last_bt_notif.bt_ci_compliance); 540 IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n", 541 le32_to_cpu(mvm->last_bt_notif.primary_ch_lut)); 542 IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n", 543 le32_to_cpu(mvm->last_bt_notif.secondary_ch_lut)); 544 IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n", 545 le32_to_cpu(mvm->last_bt_notif.bt_activity_grading)); 546 547 548 iwl_mvm_bt_coex_notif_handle(mvm); 549 } 550 551 void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 552 enum ieee80211_rssi_event_data rssi_event) 553 { 554 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 555 int ret; 556 557 lockdep_assert_held(&mvm->mutex); 558 559 /* Ignore updates if we are in force mode */ 560 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) 561 return; 562 563 /* 564 * Rssi update while not associated - can happen since the statistics 565 * are handled asynchronously 566 */ 567 if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) 568 return; 569 570 /* No BT - reports should be disabled */ 571 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) 572 return; 573 574 IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid, 575 rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW"); 576 577 /* 578 * Check if rssi is good enough for reduced Tx power, but not in loose 579 * scheme. 580 */ 581 if (rssi_event == RSSI_EVENT_LOW || mvm->cfg->bt_shared_single_ant || 582 iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT) 583 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, 584 false); 585 else 586 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true); 587 588 if (ret) 589 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n"); 590 } 591 592 #define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000) 593 #define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200) 594 595 u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm, 596 struct ieee80211_sta *sta) 597 { 598 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 599 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 600 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->phy_ctxt; 601 enum iwl_bt_coex_lut_type lut_type; 602 603 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id)) 604 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 605 606 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 607 BT_HIGH_TRAFFIC) 608 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 609 610 lut_type = iwl_get_coex_type(mvm, mvmsta->vif); 611 612 if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT) 613 return LINK_QUAL_AGG_TIME_LIMIT_DEF; 614 615 /* tight coex, high bt traffic, reduce AGG time limit */ 616 return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT; 617 } 618 619 bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm, 620 struct ieee80211_sta *sta) 621 { 622 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 623 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 624 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->phy_ctxt; 625 enum iwl_bt_coex_lut_type lut_type; 626 627 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id)) 628 return true; 629 630 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 631 BT_HIGH_TRAFFIC) 632 return true; 633 634 /* 635 * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas 636 * since BT is already killed. 637 * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while 638 * we Tx. 639 * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO. 640 */ 641 lut_type = iwl_get_coex_type(mvm, mvmsta->vif); 642 return lut_type != BT_COEX_LOOSE_LUT; 643 } 644 645 bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant) 646 { 647 /* there is no other antenna, shared antenna is always available */ 648 if (mvm->cfg->bt_shared_single_ant) 649 return true; 650 651 if (ant & mvm->cfg->non_shared_ant) 652 return true; 653 654 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < 655 BT_HIGH_TRAFFIC; 656 } 657 658 bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm) 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 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC; 665 } 666 667 bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm, 668 enum nl80211_band band) 669 { 670 u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading); 671 672 if (band != NL80211_BAND_2GHZ) 673 return false; 674 675 return bt_activity >= BT_LOW_TRAFFIC; 676 } 677 678 u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr, 679 struct ieee80211_tx_info *info, u8 ac) 680 { 681 __le16 fc = hdr->frame_control; 682 bool mplut_enabled = iwl_mvm_is_mplut_supported(mvm); 683 684 if (info->band != NL80211_BAND_2GHZ) 685 return 0; 686 687 if (unlikely(mvm->bt_tx_prio)) 688 return mvm->bt_tx_prio - 1; 689 690 if (likely(ieee80211_is_data(fc))) { 691 if (likely(ieee80211_is_data_qos(fc))) { 692 switch (ac) { 693 case IEEE80211_AC_BE: 694 return mplut_enabled ? 1 : 0; 695 case IEEE80211_AC_VI: 696 return mplut_enabled ? 2 : 3; 697 case IEEE80211_AC_VO: 698 return 3; 699 default: 700 return 0; 701 } 702 } else if (is_multicast_ether_addr(hdr->addr1)) { 703 return 3; 704 } else 705 return 0; 706 } else if (ieee80211_is_mgmt(fc)) { 707 return ieee80211_is_disassoc(fc) ? 0 : 3; 708 } else if (ieee80211_is_ctl(fc)) { 709 /* ignore cfend and cfendack frames as we never send those */ 710 return 3; 711 } 712 713 return 0; 714 } 715 716 void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm) 717 { 718 iwl_mvm_bt_coex_notif_handle(mvm); 719 } 720