849 lines · c
1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause2/*3 * Copyright (C) 2013-2014, 2018-2020, 2022-2024 Intel Corporation4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH5 */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*/16static 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 91static enum iwl_bt_coex_lut_type92iwl_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 rate101 * 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 AMPDU103 * size limit will be wrong for a short time which is not a big104 * 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 135int 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 170send_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 177static 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 210struct iwl_bt_iterator_data {211 struct iwl_bt_coex_prof_old_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 220static inline221void 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 234static 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 be258 * enabled or disabled (due to BT coex)259 */260bool261iwl_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 iwl_fw_lookup_notif_ver(mvm->fw, BT_COEX_GROUP,271 PROFILE_NOTIF, 0) >= 1;272 u8 wifi_loss_mid_high_rssi;273 u8 wifi_loss_low_rssi;274 u8 wifi_loss_rate;275 276 if (iwl_fw_lookup_notif_ver(mvm->fw, BT_COEX_GROUP,277 PROFILE_NOTIF, 0) >= 1) {278 /* For now, we consider 2.4 GHz band / ANT_A only */279 wifi_loss_mid_high_rssi =280 mvm->last_bt_wifi_loss.wifi_loss_mid_high_rssi[PHY_BAND_24][0];281 wifi_loss_low_rssi =282 mvm->last_bt_wifi_loss.wifi_loss_low_rssi[PHY_BAND_24][0];283 } else {284 wifi_loss_mid_high_rssi = mvm->last_bt_notif.wifi_loss_mid_high_rssi;285 wifi_loss_low_rssi = mvm->last_bt_notif.wifi_loss_low_rssi;286 }287 288 if (wifi_loss_low_rssi == BT_OFF)289 return true;290 291 if (primary)292 return false;293 294 /* The feature is not supported */295 if (!have_wifi_loss_rate)296 return true;297 298 299 /*300 * In case we don't know the RSSI - take the lower wifi loss,301 * so we will more likely enter eSR, and if RSSI is low -302 * we will get an update on this and exit eSR.303 */304 if (!link_rssi)305 wifi_loss_rate = wifi_loss_mid_high_rssi;306 307 else if (mvmvif->esr_active)308 /* RSSI needs to get really low to disable eSR... */309 wifi_loss_rate =310 link_rssi <= -IWL_MVM_BT_COEX_DISABLE_ESR_THRESH ?311 wifi_loss_low_rssi :312 wifi_loss_mid_high_rssi;313 else314 /* ...And really high before we enable it back */315 wifi_loss_rate =316 link_rssi <= -IWL_MVM_BT_COEX_ENABLE_ESR_THRESH ?317 wifi_loss_low_rssi :318 wifi_loss_mid_high_rssi;319 320 return wifi_loss_rate <= IWL_MVM_BT_COEX_WIFI_LOSS_THRESH;321}322 323void iwl_mvm_bt_coex_update_link_esr(struct iwl_mvm *mvm,324 struct ieee80211_vif *vif,325 int link_id)326{327 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);328 struct iwl_mvm_vif_link_info *link = mvmvif->link[link_id];329 330 if (!ieee80211_vif_is_mld(vif) ||331 !iwl_mvm_vif_from_mac80211(vif)->authorized ||332 WARN_ON(!link))333 return;334 335 if (!iwl_mvm_bt_coex_calculate_esr_mode(mvm, vif,336 (s8)link->beacon_stats.avg_signal,337 link_id == iwl_mvm_get_primary_link(vif)))338 /* In case we decided to exit eSR - stay with the primary */339 iwl_mvm_exit_esr(mvm, vif, IWL_MVM_ESR_EXIT_COEX,340 iwl_mvm_get_primary_link(vif));341}342 343static void iwl_mvm_bt_notif_per_link(struct iwl_mvm *mvm,344 struct ieee80211_vif *vif,345 struct iwl_bt_iterator_data *data,346 unsigned int link_id)347{348 /* default smps_mode is AUTOMATIC - only used for client modes */349 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC;350 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);351 u32 bt_activity_grading, min_ag_for_static_smps;352 struct ieee80211_chanctx_conf *chanctx_conf;353 struct iwl_mvm_vif_link_info *link_info;354 struct ieee80211_bss_conf *link_conf;355 int ave_rssi;356 357 lockdep_assert_held(&mvm->mutex);358 359 link_info = mvmvif->link[link_id];360 if (!link_info)361 return;362 363 link_conf = rcu_dereference(vif->link_conf[link_id]);364 /* This can happen due to races: if we receive the notification365 * and have the mutex held, while mac80211 is stuck on our mutex366 * in the middle of removing the link.367 */368 if (!link_conf)369 return;370 371 chanctx_conf = rcu_dereference(link_conf->chanctx_conf);372 373 /* If channel context is invalid or not on 2.4GHz .. */374 if ((!chanctx_conf ||375 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ)) {376 if (vif->type == NL80211_IFTYPE_STATION) {377 /* ... relax constraints and disable rssi events */378 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,379 smps_mode, link_id);380 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id,381 false);382 iwl_mvm_bt_coex_enable_rssi_event(mvm, link_info, false,383 0);384 }385 return;386 }387 388 iwl_mvm_bt_coex_update_link_esr(mvm, vif, link_id);389 390 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2))391 min_ag_for_static_smps = BT_VERY_HIGH_TRAFFIC;392 else393 min_ag_for_static_smps = BT_HIGH_TRAFFIC;394 395 bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading);396 if (bt_activity_grading >= min_ag_for_static_smps)397 smps_mode = IEEE80211_SMPS_STATIC;398 else if (bt_activity_grading >= BT_LOW_TRAFFIC)399 smps_mode = IEEE80211_SMPS_DYNAMIC;400 401 /* relax SMPS constraints for next association */402 if (!vif->cfg.assoc)403 smps_mode = IEEE80211_SMPS_AUTOMATIC;404 405 if (link_info->phy_ctxt &&406 (mvm->last_bt_notif.rrc_status & BIT(link_info->phy_ctxt->id)))407 smps_mode = IEEE80211_SMPS_AUTOMATIC;408 409 IWL_DEBUG_COEX(data->mvm,410 "mac %d link %d: bt_activity_grading %d smps_req %d\n",411 mvmvif->id, link_info->fw_link_id,412 bt_activity_grading, smps_mode);413 414 if (vif->type == NL80211_IFTYPE_STATION)415 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,416 smps_mode, link_id);417 418 /* low latency is always primary */419 if (iwl_mvm_vif_low_latency(mvmvif)) {420 data->primary_ll = true;421 422 data->secondary = data->primary;423 data->primary = chanctx_conf;424 }425 426 if (vif->type == NL80211_IFTYPE_AP) {427 if (!mvmvif->ap_ibss_active)428 return;429 430 if (chanctx_conf == data->primary)431 return;432 433 if (!data->primary_ll) {434 /*435 * downgrade the current primary no matter what its436 * type is.437 */438 data->secondary = data->primary;439 data->primary = chanctx_conf;440 } else {441 /* there is low latency vif - we will be secondary */442 data->secondary = chanctx_conf;443 }444 445 /* FIXME: TCM load per interface? or need something per link? */446 if (data->primary == chanctx_conf)447 data->primary_load = mvm->tcm.result.load[mvmvif->id];448 else if (data->secondary == chanctx_conf)449 data->secondary_load = mvm->tcm.result.load[mvmvif->id];450 return;451 }452 453 /*454 * STA / P2P Client, try to be primary if first vif. If we are in low455 * latency mode, we are already in primary and just don't do much456 */457 if (!data->primary || data->primary == chanctx_conf)458 data->primary = chanctx_conf;459 else if (!data->secondary)460 /* if secondary is not NULL, it might be a GO */461 data->secondary = chanctx_conf;462 463 /* FIXME: TCM load per interface? or need something per link? */464 if (data->primary == chanctx_conf)465 data->primary_load = mvm->tcm.result.load[mvmvif->id];466 else if (data->secondary == chanctx_conf)467 data->secondary_load = mvm->tcm.result.load[mvmvif->id];468 /*469 * don't reduce the Tx power if one of these is true:470 * we are in LOOSE471 * BT is inactive472 * we are not associated473 */474 if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT ||475 le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF ||476 !vif->cfg.assoc) {477 iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id, false);478 iwl_mvm_bt_coex_enable_rssi_event(mvm, link_info, false, 0);479 return;480 }481 482 /* try to get the avg rssi from fw */483 ave_rssi = link_info->bf_data.ave_beacon_signal;484 485 /* if the RSSI isn't valid, fake it is very low */486 if (!ave_rssi)487 ave_rssi = -100;488 if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) {489 if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id,490 true))491 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");492 } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) {493 if (iwl_mvm_bt_coex_reduced_txp(mvm, link_info->ap_sta_id,494 false))495 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");496 }497 498 /* Begin to monitor the RSSI: it may influence the reduced Tx power */499 iwl_mvm_bt_coex_enable_rssi_event(mvm, link_info, true, ave_rssi);500}501 502/* must be called under rcu_read_lock */503static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac,504 struct ieee80211_vif *vif)505{506 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);507 struct iwl_bt_iterator_data *data = _data;508 struct iwl_mvm *mvm = data->mvm;509 unsigned int link_id;510 511 lockdep_assert_held(&mvm->mutex);512 513 switch (vif->type) {514 case NL80211_IFTYPE_STATION:515 break;516 case NL80211_IFTYPE_AP:517 if (!mvmvif->ap_ibss_active)518 return;519 break;520 default:521 return;522 }523 524 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++)525 iwl_mvm_bt_notif_per_link(mvm, vif, data, link_id);526}527 528/* must be called under rcu_read_lock */529static void iwl_mvm_bt_coex_notif_iterator(void *_data, u8 *mac,530 struct ieee80211_vif *vif)531{532 struct iwl_mvm *mvm = _data;533 534 lockdep_assert_held(&mvm->mutex);535 536 if (vif->type != NL80211_IFTYPE_STATION)537 return;538 539 for (int link_id = 0;540 link_id < IEEE80211_MLD_MAX_NUM_LINKS;541 link_id++) {542 struct ieee80211_bss_conf *link_conf =543 rcu_dereference_check(vif->link_conf[link_id],544 lockdep_is_held(&mvm->mutex));545 struct ieee80211_chanctx_conf *chanctx_conf =546 rcu_dereference_check(link_conf->chanctx_conf,547 lockdep_is_held(&mvm->mutex));548 549 if ((!chanctx_conf ||550 chanctx_conf->def.chan->band != NL80211_BAND_2GHZ))551 continue;552 553 iwl_mvm_bt_coex_update_link_esr(mvm, vif, link_id);554 }555}556 557static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm)558{559 struct iwl_bt_iterator_data data = {560 .mvm = mvm,561 .notif = &mvm->last_bt_notif,562 };563 struct iwl_bt_coex_ci_cmd cmd = {};564 u8 ci_bw_idx;565 566 /* Ignore updates if we are in force mode */567 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))568 return;569 570 rcu_read_lock();571 ieee80211_iterate_active_interfaces_atomic(572 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,573 iwl_mvm_bt_notif_iterator, &data);574 575 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {576 rcu_read_unlock();577 return;578 }579 580 iwl_mvm_bt_coex_tcm_based_ci(mvm, &data);581 582 if (data.primary) {583 struct ieee80211_chanctx_conf *chan = data.primary;584 if (WARN_ON(!chan->def.chan)) {585 rcu_read_unlock();586 return;587 }588 589 if (chan->def.width < NL80211_CHAN_WIDTH_40) {590 ci_bw_idx = 0;591 } else {592 if (chan->def.center_freq1 >593 chan->def.chan->center_freq)594 ci_bw_idx = 2;595 else596 ci_bw_idx = 1;597 }598 599 cmd.bt_primary_ci =600 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];601 cmd.primary_ch_phy_id =602 cpu_to_le32(*((u16 *)data.primary->drv_priv));603 }604 605 if (data.secondary) {606 struct ieee80211_chanctx_conf *chan = data.secondary;607 if (WARN_ON(!data.secondary->def.chan)) {608 rcu_read_unlock();609 return;610 }611 612 if (chan->def.width < NL80211_CHAN_WIDTH_40) {613 ci_bw_idx = 0;614 } else {615 if (chan->def.center_freq1 >616 chan->def.chan->center_freq)617 ci_bw_idx = 2;618 else619 ci_bw_idx = 1;620 }621 622 cmd.bt_secondary_ci =623 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];624 cmd.secondary_ch_phy_id =625 cpu_to_le32(*((u16 *)data.secondary->drv_priv));626 }627 628 rcu_read_unlock();629 630 /* Don't spam the fw with the same command over and over */631 if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) {632 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0,633 sizeof(cmd), &cmd))634 IWL_ERR(mvm, "Failed to send BT_CI cmd\n");635 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd));636 }637}638 639void iwl_mvm_rx_bt_coex_old_notif(struct iwl_mvm *mvm,640 struct iwl_rx_cmd_buffer *rxb)641{642 struct iwl_rx_packet *pkt = rxb_addr(rxb);643 struct iwl_bt_coex_prof_old_notif *notif = (void *)pkt->data;644 645 IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n");646 IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance);647 IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n",648 le32_to_cpu(notif->primary_ch_lut));649 IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n",650 le32_to_cpu(notif->secondary_ch_lut));651 IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n",652 le32_to_cpu(notif->bt_activity_grading));653 654 /* remember this notification for future use: rssi fluctuations */655 memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif));656 657 iwl_mvm_bt_coex_notif_handle(mvm);658}659 660void iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm,661 struct iwl_rx_cmd_buffer *rxb)662{663 const struct iwl_rx_packet *pkt = rxb_addr(rxb);664 const struct iwl_bt_coex_profile_notif *notif = (const void *)pkt->data;665 666 lockdep_assert_held(&mvm->mutex);667 668 mvm->last_bt_wifi_loss = *notif;669 670 ieee80211_iterate_active_interfaces(mvm->hw,671 IEEE80211_IFACE_ITER_NORMAL,672 iwl_mvm_bt_coex_notif_iterator,673 mvm);674}675 676void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,677 enum ieee80211_rssi_event_data rssi_event)678{679 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);680 int ret;681 682 lockdep_assert_held(&mvm->mutex);683 684 /* Ignore updates if we are in force mode */685 if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))686 return;687 688 /*689 * Rssi update while not associated - can happen since the statistics690 * are handled asynchronously691 */692 if (mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA)693 return;694 695 /* No BT - reports should be disabled */696 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF)697 return;698 699 IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid,700 rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW");701 702 /*703 * Check if rssi is good enough for reduced Tx power, but not in loose704 * scheme.705 */706 if (rssi_event == RSSI_EVENT_LOW ||707 iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT)708 ret = iwl_mvm_bt_coex_reduced_txp(mvm,709 mvmvif->deflink.ap_sta_id,710 false);711 else712 ret = iwl_mvm_bt_coex_reduced_txp(mvm,713 mvmvif->deflink.ap_sta_id,714 true);715 716 if (ret)717 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n");718}719 720#define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000)721#define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200)722 723u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm,724 struct ieee80211_sta *sta)725{726 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);727 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);728 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt;729 enum iwl_bt_coex_lut_type lut_type;730 731 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id))732 return LINK_QUAL_AGG_TIME_LIMIT_DEF;733 734 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <735 BT_HIGH_TRAFFIC)736 return LINK_QUAL_AGG_TIME_LIMIT_DEF;737 738 lut_type = iwl_get_coex_type(mvm, mvmsta->vif);739 740 if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT)741 return LINK_QUAL_AGG_TIME_LIMIT_DEF;742 743 /* tight coex, high bt traffic, reduce AGG time limit */744 return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT;745}746 747bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm,748 struct ieee80211_sta *sta)749{750 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);751 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);752 struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->deflink.phy_ctxt;753 enum iwl_bt_coex_lut_type lut_type;754 755 if (mvm->last_bt_notif.ttc_status & BIT(phy_ctxt->id))756 return true;757 758 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <759 BT_HIGH_TRAFFIC)760 return true;761 762 /*763 * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas764 * since BT is already killed.765 * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while766 * we Tx.767 * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO.768 */769 lut_type = iwl_get_coex_type(mvm, mvmsta->vif);770 return lut_type != BT_COEX_LOOSE_LUT;771}772 773bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant)774{775 if (ant & mvm->cfg->non_shared_ant)776 return true;777 778 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <779 BT_HIGH_TRAFFIC;780}781 782bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm)783{784 return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC;785}786 787bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm,788 enum nl80211_band band)789{790 u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading);791 792 if (band != NL80211_BAND_2GHZ)793 return false;794 795 return bt_activity >= BT_LOW_TRAFFIC;796}797 798u8 iwl_mvm_bt_coex_get_single_ant_msk(struct iwl_mvm *mvm, u8 enabled_ants)799{800 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_COEX_SCHEMA_2) &&801 (mvm->cfg->non_shared_ant & enabled_ants))802 return mvm->cfg->non_shared_ant;803 804 return first_antenna(enabled_ants);805}806 807u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,808 struct ieee80211_tx_info *info, u8 ac)809{810 __le16 fc = hdr->frame_control;811 bool mplut_enabled = iwl_mvm_is_mplut_supported(mvm);812 813 if (info->band != NL80211_BAND_2GHZ)814 return 0;815 816 if (unlikely(mvm->bt_tx_prio))817 return mvm->bt_tx_prio - 1;818 819 if (likely(ieee80211_is_data(fc))) {820 if (likely(ieee80211_is_data_qos(fc))) {821 switch (ac) {822 case IEEE80211_AC_BE:823 return mplut_enabled ? 1 : 0;824 case IEEE80211_AC_VI:825 return mplut_enabled ? 2 : 3;826 case IEEE80211_AC_VO:827 return 3;828 default:829 return 0;830 }831 } else if (is_multicast_ether_addr(hdr->addr1)) {832 return 3;833 } else834 return 0;835 } else if (ieee80211_is_mgmt(fc)) {836 return ieee80211_is_disassoc(fc) ? 0 : 3;837 } else if (ieee80211_is_ctl(fc)) {838 /* ignore cfend and cfendack frames as we never send those */839 return 3;840 }841 842 return 0;843}844 845void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm)846{847 iwl_mvm_bt_coex_notif_handle(mvm);848}849