/****************************************************************************** * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, * USA * * The full GNU General Public License is included in this distribution * in the file called COPYING. * * Contact Information: * Intel Linux Wireless * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * * BSD LICENSE * * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * *****************************************************************************/ #include #include "fw-api-bt-coex.h" #include "iwl-modparams.h" #include "mvm.h" #include "iwl-debug.h" #define EVENT_PRIO_ANT(_evt, _prio, _shrd_ant) \ [(_evt)] = (((_prio) << BT_COEX_PRIO_TBL_PRIO_POS) | \ ((_shrd_ant) << BT_COEX_PRIO_TBL_SHRD_ANT_POS)) static const u8 iwl_bt_prio_tbl[BT_COEX_PRIO_TBL_EVT_MAX] = { EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_INIT_CALIB1, BT_COEX_PRIO_TBL_PRIO_BYPASS, 0), EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_INIT_CALIB2, BT_COEX_PRIO_TBL_PRIO_BYPASS, 1), EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_PERIODIC_CALIB_LOW1, BT_COEX_PRIO_TBL_PRIO_LOW, 0), EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_PERIODIC_CALIB_LOW2, BT_COEX_PRIO_TBL_PRIO_LOW, 1), EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_PERIODIC_CALIB_HIGH1, BT_COEX_PRIO_TBL_PRIO_HIGH, 0), EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_PERIODIC_CALIB_HIGH2, BT_COEX_PRIO_TBL_PRIO_HIGH, 1), EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_DTIM, BT_COEX_PRIO_TBL_DISABLED, 0), EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_SCAN52, BT_COEX_PRIO_TBL_PRIO_COEX_OFF, 0), EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_SCAN24, BT_COEX_PRIO_TBL_PRIO_COEX_ON, 0), EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_IDLE, BT_COEX_PRIO_TBL_PRIO_COEX_IDLE, 0), 0, 0, 0, 0, 0, 0, }; #undef EVENT_PRIO_ANT #define BT_ENABLE_REDUCED_TXPOWER_THRESHOLD (-62) #define BT_DISABLE_REDUCED_TXPOWER_THRESHOLD (-65) #define BT_ANTENNA_COUPLING_THRESHOLD (30) int iwl_send_bt_prio_tbl(struct iwl_mvm *mvm) { if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWBT_COEX)) return 0; return iwl_mvm_send_cmd_pdu(mvm, BT_COEX_PRIO_TABLE, CMD_SYNC, sizeof(struct iwl_bt_coex_prio_tbl_cmd), &iwl_bt_prio_tbl); } const u32 iwl_bt_ack_kill_msk[BT_KILL_MSK_MAX] = { [BT_KILL_MSK_DEFAULT] = 0xffff0000, [BT_KILL_MSK_SCO_HID_A2DP] = 0xffffffff, [BT_KILL_MSK_REDUCED_TXPOW] = 0, }; const u32 iwl_bt_cts_kill_msk[BT_KILL_MSK_MAX] = { [BT_KILL_MSK_DEFAULT] = 0xffff0000, [BT_KILL_MSK_SCO_HID_A2DP] = 0xffffffff, [BT_KILL_MSK_REDUCED_TXPOW] = 0, }; static const __le32 iwl_bt_prio_boost[BT_COEX_BOOST_SIZE] = { cpu_to_le32(0xf0f0f0f0), cpu_to_le32(0xc0c0c0c0), cpu_to_le32(0xfcfcfcfc), cpu_to_le32(0xff00ff00), }; static const __le32 iwl_single_shared_ant[BT_COEX_MAX_LUT][BT_COEX_LUT_SIZE] = { { cpu_to_le32(0x40000000), cpu_to_le32(0x00000000), cpu_to_le32(0x44000000), cpu_to_le32(0x00000000), cpu_to_le32(0x40000000), cpu_to_le32(0x00000000), cpu_to_le32(0x44000000), cpu_to_le32(0x00000000), cpu_to_le32(0xc0004000), cpu_to_le32(0xf0005000), cpu_to_le32(0xc0004000), cpu_to_le32(0xf0005000), }, { cpu_to_le32(0x40000000), cpu_to_le32(0x00000000), cpu_to_le32(0x44000000), cpu_to_le32(0x00000000), cpu_to_le32(0x40000000), cpu_to_le32(0x00000000), cpu_to_le32(0x44000000), cpu_to_le32(0x00000000), cpu_to_le32(0xc0004000), cpu_to_le32(0xf0005000), cpu_to_le32(0xc0004000), cpu_to_le32(0xf0005000), }, { cpu_to_le32(0x40000000), cpu_to_le32(0x00000000), cpu_to_le32(0x44000000), cpu_to_le32(0x00000000), cpu_to_le32(0x40000000), cpu_to_le32(0x00000000), cpu_to_le32(0x44000000), cpu_to_le32(0x00000000), cpu_to_le32(0xc0004000), cpu_to_le32(0xf0005000), cpu_to_le32(0xc0004000), cpu_to_le32(0xf0005000), }, }; static const __le32 iwl_combined_lookup[BT_COEX_MAX_LUT][BT_COEX_LUT_SIZE] = { { /* Tight */ cpu_to_le32(0xaaaaaaaa), cpu_to_le32(0xaaaaaaaa), cpu_to_le32(0xaeaaaaaa), cpu_to_le32(0xaaaaaaaa), cpu_to_le32(0xcc00ff28), cpu_to_le32(0x0000aaaa), cpu_to_le32(0xcc00aaaa), cpu_to_le32(0x0000aaaa), cpu_to_le32(0xc0004000), cpu_to_le32(0x00000000), cpu_to_le32(0xf0005000), cpu_to_le32(0xf0005000), }, { /* Loose */ cpu_to_le32(0xaaaaaaaa), cpu_to_le32(0xaaaaaaaa), cpu_to_le32(0xaaaaaaaa), cpu_to_le32(0xaaaaaaaa), cpu_to_le32(0xcc00ff28), cpu_to_le32(0x0000aaaa), cpu_to_le32(0xcc00aaaa), cpu_to_le32(0x0000aaaa), cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), cpu_to_le32(0xf0005000), cpu_to_le32(0xf0005000), }, { /* Tx Tx disabled */ cpu_to_le32(0xaaaaaaaa), cpu_to_le32(0xaaaaaaaa), cpu_to_le32(0xaaaaaaaa), cpu_to_le32(0xaaaaaaaa), cpu_to_le32(0xcc00ff28), cpu_to_le32(0x0000aaaa), cpu_to_le32(0xcc00aaaa), cpu_to_le32(0x0000aaaa), cpu_to_le32(0xC0004000), cpu_to_le32(0xC0004000), cpu_to_le32(0xF0005000), cpu_to_le32(0xF0005000), }, }; /* 20MHz / 40MHz below / 40Mhz above*/ static const __le64 iwl_ci_mask[][3] = { /* dummy entry for channel 0 */ {cpu_to_le64(0), cpu_to_le64(0), cpu_to_le64(0)}, { cpu_to_le64(0x0000001FFFULL), cpu_to_le64(0x0ULL), cpu_to_le64(0x00007FFFFFULL), }, { cpu_to_le64(0x000000FFFFULL), cpu_to_le64(0x0ULL), cpu_to_le64(0x0003FFFFFFULL), }, { cpu_to_le64(0x000003FFFCULL), cpu_to_le64(0x0ULL), cpu_to_le64(0x000FFFFFFCULL), }, { cpu_to_le64(0x00001FFFE0ULL), cpu_to_le64(0x0ULL), cpu_to_le64(0x007FFFFFE0ULL), }, { cpu_to_le64(0x00007FFF80ULL), cpu_to_le64(0x00007FFFFFULL), cpu_to_le64(0x01FFFFFF80ULL), }, { cpu_to_le64(0x0003FFFC00ULL), cpu_to_le64(0x0003FFFFFFULL), cpu_to_le64(0x0FFFFFFC00ULL), }, { cpu_to_le64(0x000FFFF000ULL), cpu_to_le64(0x000FFFFFFCULL), cpu_to_le64(0x3FFFFFF000ULL), }, { cpu_to_le64(0x007FFF8000ULL), cpu_to_le64(0x007FFFFFE0ULL), cpu_to_le64(0xFFFFFF8000ULL), }, { cpu_to_le64(0x01FFFE0000ULL), cpu_to_le64(0x01FFFFFF80ULL), cpu_to_le64(0xFFFFFE0000ULL), }, { cpu_to_le64(0x0FFFF00000ULL), cpu_to_le64(0x0FFFFFFC00ULL), cpu_to_le64(0x0ULL), }, { cpu_to_le64(0x3FFFC00000ULL), cpu_to_le64(0x3FFFFFF000ULL), cpu_to_le64(0x0) }, { cpu_to_le64(0xFFFE000000ULL), cpu_to_le64(0xFFFFFF8000ULL), cpu_to_le64(0x0) }, { cpu_to_le64(0xFFF8000000ULL), cpu_to_le64(0xFFFFFE0000ULL), cpu_to_le64(0x0) }, { cpu_to_le64(0xFFC0000000ULL), cpu_to_le64(0x0ULL), cpu_to_le64(0x0ULL) }, }; static const __le32 iwl_bt_mprio_lut[BT_COEX_MULTI_PRIO_LUT_SIZE] = { cpu_to_le32(0x22002200), cpu_to_le32(0x33113311), }; static enum iwl_bt_coex_lut_type iwl_get_coex_type(struct iwl_mvm *mvm, const struct ieee80211_vif *vif) { struct ieee80211_chanctx_conf *chanctx_conf; enum iwl_bt_coex_lut_type ret; u16 phy_ctx_id; /* * Checking that we hold mvm->mutex is a good idea, but the rate * control can't acquire the mutex since it runs in Tx path. * So this is racy in that case, but in the worst case, the AMPDU * size limit will be wrong for a short time which is not a big * issue. */ rcu_read_lock(); chanctx_conf = rcu_dereference(vif->chanctx_conf); if (!chanctx_conf || chanctx_conf->def.chan->band != IEEE80211_BAND_2GHZ) { rcu_read_unlock(); return BT_COEX_LOOSE_LUT; } ret = BT_COEX_TX_DIS_LUT; if (mvm->cfg->bt_shared_single_ant) { rcu_read_unlock(); return ret; } phy_ctx_id = *((u16 *)chanctx_conf->drv_priv); if (mvm->last_bt_ci_cmd.primary_ch_phy_id == phy_ctx_id) ret = le32_to_cpu(mvm->last_bt_notif.primary_ch_lut); else if (mvm->last_bt_ci_cmd.secondary_ch_phy_id == phy_ctx_id) ret = le32_to_cpu(mvm->last_bt_notif.secondary_ch_lut); /* else - default = TX TX disallowed */ rcu_read_unlock(); return ret; } int iwl_send_bt_init_conf(struct iwl_mvm *mvm) { struct iwl_bt_coex_cmd *bt_cmd; struct iwl_host_cmd cmd = { .id = BT_CONFIG, .len = { sizeof(*bt_cmd), }, .dataflags = { IWL_HCMD_DFL_NOCOPY, }, .flags = CMD_SYNC, }; int ret; u32 flags; if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWBT_COEX)) return 0; bt_cmd = kzalloc(sizeof(*bt_cmd), GFP_KERNEL); if (!bt_cmd) return -ENOMEM; cmd.data[0] = bt_cmd; bt_cmd->max_kill = 5; bt_cmd->bt4_antenna_isolation_thr = BT_ANTENNA_COUPLING_THRESHOLD, bt_cmd->bt4_antenna_isolation = iwlwifi_mod_params.ant_coupling, bt_cmd->bt4_tx_tx_delta_freq_thr = 15, bt_cmd->bt4_tx_rx_max_freq0 = 15, flags = iwlwifi_mod_params.bt_coex_active ? BT_COEX_NW : BT_COEX_DISABLE; flags |= BT_CH_PRIMARY_EN | BT_CH_SECONDARY_EN | BT_SYNC_2_BT_DISABLE; bt_cmd->flags = cpu_to_le32(flags); bt_cmd->valid_bit_msk = cpu_to_le32(BT_VALID_ENABLE | BT_VALID_BT_PRIO_BOOST | BT_VALID_MAX_KILL | BT_VALID_3W_TMRS | BT_VALID_KILL_ACK | BT_VALID_KILL_CTS | BT_VALID_REDUCED_TX_POWER | BT_VALID_LUT | BT_VALID_WIFI_RX_SW_PRIO_BOOST | BT_VALID_WIFI_TX_SW_PRIO_BOOST | BT_VALID_CORUN_LUT_20 | BT_VALID_CORUN_LUT_40 | BT_VALID_ANT_ISOLATION | BT_VALID_ANT_ISOLATION_THRS | BT_VALID_TXTX_DELTA_FREQ_THRS | BT_VALID_TXRX_MAX_FREQ_0 | BT_VALID_SYNC_TO_SCO); if (mvm->cfg->bt_shared_single_ant) memcpy(&bt_cmd->decision_lut, iwl_single_shared_ant, sizeof(iwl_single_shared_ant)); else memcpy(&bt_cmd->decision_lut, iwl_combined_lookup, sizeof(iwl_combined_lookup)); memcpy(&bt_cmd->bt_prio_boost, iwl_bt_prio_boost, sizeof(iwl_bt_prio_boost)); memcpy(&bt_cmd->bt4_multiprio_lut, iwl_bt_mprio_lut, sizeof(iwl_bt_mprio_lut)); bt_cmd->kill_ack_msk = cpu_to_le32(iwl_bt_ack_kill_msk[BT_KILL_MSK_DEFAULT]); bt_cmd->kill_cts_msk = cpu_to_le32(iwl_bt_cts_kill_msk[BT_KILL_MSK_DEFAULT]); memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); ret = iwl_mvm_send_cmd(mvm, &cmd); kfree(bt_cmd); return ret; } static int iwl_mvm_bt_udpate_ctrl_kill_msk(struct iwl_mvm *mvm, bool reduced_tx_power) { enum iwl_bt_kill_msk bt_kill_msk; struct iwl_bt_coex_cmd *bt_cmd; struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif; struct iwl_host_cmd cmd = { .id = BT_CONFIG, .data[0] = &bt_cmd, .len = { sizeof(*bt_cmd), }, .dataflags = { IWL_HCMD_DFL_NOCOPY, }, .flags = CMD_SYNC, }; int ret = 0; lockdep_assert_held(&mvm->mutex); if (reduced_tx_power) { /* Reduced Tx power has precedence on the type of the profile */ bt_kill_msk = BT_KILL_MSK_REDUCED_TXPOW; } else { /* Low latency BT profile is active: give higher prio to BT */ if (BT_MBOX_MSG(notif, 3, SCO_STATE) || BT_MBOX_MSG(notif, 3, A2DP_STATE) || BT_MBOX_MSG(notif, 3, SNIFF_STATE)) bt_kill_msk = BT_KILL_MSK_SCO_HID_A2DP; else bt_kill_msk = BT_KILL_MSK_DEFAULT; } IWL_DEBUG_COEX(mvm, "Update kill_msk: %d - SCO %sactive A2DP %sactive SNIFF %sactive\n", bt_kill_msk, BT_MBOX_MSG(notif, 3, SCO_STATE) ? "" : "in", BT_MBOX_MSG(notif, 3, A2DP_STATE) ? "" : "in", BT_MBOX_MSG(notif, 3, SNIFF_STATE) ? "" : "in"); /* Don't send HCMD if there is no update */ if (bt_kill_msk == mvm->bt_kill_msk) return 0; mvm->bt_kill_msk = bt_kill_msk; bt_cmd = kzalloc(sizeof(*bt_cmd), GFP_KERNEL); if (!bt_cmd) return -ENOMEM; cmd.data[0] = bt_cmd; bt_cmd->flags = cpu_to_le32(BT_COEX_NW); bt_cmd->kill_ack_msk = cpu_to_le32(iwl_bt_ack_kill_msk[bt_kill_msk]); bt_cmd->kill_cts_msk = cpu_to_le32(iwl_bt_cts_kill_msk[bt_kill_msk]); bt_cmd->valid_bit_msk |= cpu_to_le32(BT_VALID_ENABLE | BT_VALID_KILL_ACK | BT_VALID_KILL_CTS); IWL_DEBUG_COEX(mvm, "ACK Kill msk = 0x%08x, CTS Kill msk = 0x%08x\n", iwl_bt_ack_kill_msk[bt_kill_msk], iwl_bt_cts_kill_msk[bt_kill_msk]); ret = iwl_mvm_send_cmd(mvm, &cmd); kfree(bt_cmd); return ret; } static int iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm *mvm, u8 sta_id, bool enable) { struct iwl_bt_coex_cmd *bt_cmd; /* Send ASYNC since this can be sent from an atomic context */ struct iwl_host_cmd cmd = { .id = BT_CONFIG, .len = { sizeof(*bt_cmd), }, .dataflags = { IWL_HCMD_DFL_DUP, }, .flags = CMD_ASYNC, }; struct ieee80211_sta *sta; struct iwl_mvm_sta *mvmsta; int ret; if (sta_id == IWL_MVM_STATION_COUNT) return 0; sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], lockdep_is_held(&mvm->mutex)); /* This can happen if the station has been removed right now */ if (IS_ERR_OR_NULL(sta)) return 0; mvmsta = iwl_mvm_sta_from_mac80211(sta); /* nothing to do */ if (mvmsta->bt_reduced_txpower == enable) return 0; bt_cmd = kzalloc(sizeof(*bt_cmd), GFP_ATOMIC); if (!bt_cmd) return -ENOMEM; cmd.data[0] = bt_cmd; bt_cmd->flags = cpu_to_le32(BT_COEX_NW); bt_cmd->valid_bit_msk = cpu_to_le32(BT_VALID_ENABLE | BT_VALID_REDUCED_TX_POWER); bt_cmd->bt_reduced_tx_power = sta_id; if (enable) bt_cmd->bt_reduced_tx_power |= BT_REDUCED_TX_POWER_BIT; IWL_DEBUG_COEX(mvm, "%sable reduced Tx Power for sta %d\n", enable ? "en" : "dis", sta_id); mvmsta->bt_reduced_txpower = enable; ret = iwl_mvm_send_cmd(mvm, &cmd); kfree(bt_cmd); return ret; } struct iwl_bt_iterator_data { struct iwl_bt_coex_profile_notif *notif; struct iwl_mvm *mvm; u32 num_bss_ifaces; bool reduced_tx_power; struct ieee80211_chanctx_conf *primary; struct ieee80211_chanctx_conf *secondary; }; static inline void iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif, bool enable, int rssi) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); mvmvif->bf_data.last_bt_coex_event = rssi; mvmvif->bf_data.bt_coex_max_thold = enable ? BT_ENABLE_REDUCED_TXPOWER_THRESHOLD : 0; mvmvif->bf_data.bt_coex_min_thold = enable ? BT_DISABLE_REDUCED_TXPOWER_THRESHOLD : 0; } /* must be called under rcu_read_lock */ static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_bt_iterator_data *data = _data; struct iwl_mvm *mvm = data->mvm; struct ieee80211_chanctx_conf *chanctx_conf; enum ieee80211_smps_mode smps_mode; int ave_rssi; lockdep_assert_held(&mvm->mutex); if (vif->type != NL80211_IFTYPE_STATION && vif->type != NL80211_IFTYPE_AP) return; smps_mode = IEEE80211_SMPS_AUTOMATIC; chanctx_conf = rcu_dereference(vif->chanctx_conf); /* If channel context is invalid or not on 2.4GHz .. */ if ((!chanctx_conf || chanctx_conf->def.chan->band != IEEE80211_BAND_2GHZ)) { /* ... and it is an associated STATION, relax constraints */ if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc) iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, smps_mode); iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0); return; } /* SoftAP / GO will always be primary */ if (vif->type == NL80211_IFTYPE_AP) { if (!mvmvif->ap_ibss_active) return; /* the Ack / Cts kill mask must be default if AP / GO */ data->reduced_tx_power = false; if (chanctx_conf == data->primary) return; /* downgrade the current primary no matter what its type is */ data->secondary = data->primary; data->primary = chanctx_conf; return; } data->num_bss_ifaces++; /* we are now a STA / P2P Client, and take associated ones only */ if (!vif->bss_conf.assoc) return; /* STA / P2P Client, try to be primary if first vif */ if (!data->primary || data->primary == chanctx_conf) data->primary = chanctx_conf; else if (!data->secondary) /* if secondary is not NULL, it might be a GO */ data->secondary = chanctx_conf; if (le32_to_cpu(data->notif->bt_activity_grading) >= BT_HIGH_TRAFFIC) smps_mode = IEEE80211_SMPS_STATIC; else if (le32_to_cpu(data->notif->bt_activity_grading) >= BT_LOW_TRAFFIC) smps_mode = IEEE80211_SMPS_DYNAMIC; IWL_DEBUG_COEX(data->mvm, "mac %d: bt_status %d bt_activity_grading %d smps_req %d\n", mvmvif->id, data->notif->bt_status, data->notif->bt_activity_grading, smps_mode); iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, smps_mode); /* don't reduce the Tx power if in loose scheme */ if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT || mvm->cfg->bt_shared_single_ant) { data->reduced_tx_power = false; iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0); return; } /* reduced Txpower only if BT is on, so ...*/ if (!data->notif->bt_status) { /* ... cancel reduced Tx power ... */ if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false)) IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); data->reduced_tx_power = false; /* ... and there is no need to get reports on RSSI any more. */ iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0); return; } /* try to get the avg rssi from fw */ ave_rssi = mvmvif->bf_data.ave_beacon_signal; /* if the RSSI isn't valid, fake it is very low */ if (!ave_rssi) ave_rssi = -100; if (ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) { if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true)) IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); /* * bt_kill_msk can be BT_KILL_MSK_REDUCED_TXPOW only if all the * BSS / P2P clients have rssi above threshold. * We set the bt_kill_msk to BT_KILL_MSK_REDUCED_TXPOW before * the iteration, if one interface's rssi isn't good enough, * bt_kill_msk will be set to default values. */ } else if (ave_rssi < BT_DISABLE_REDUCED_TXPOWER_THRESHOLD) { if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false)) IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); /* * One interface hasn't rssi above threshold, bt_kill_msk must * be set to default values. */ data->reduced_tx_power = false; } /* Begin to monitor the RSSI: it may influence the reduced Tx power */ iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi); } static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm) { struct iwl_bt_iterator_data data = { .mvm = mvm, .notif = &mvm->last_bt_notif, .reduced_tx_power = true, }; struct iwl_bt_coex_ci_cmd cmd = {}; u8 ci_bw_idx; rcu_read_lock(); ieee80211_iterate_active_interfaces_atomic( mvm->hw, IEEE80211_IFACE_ITER_NORMAL, iwl_mvm_bt_notif_iterator, &data); if (data.primary) { struct ieee80211_chanctx_conf *chan = data.primary; if (WARN_ON(!chan->def.chan)) { rcu_read_unlock(); return; } if (chan->def.width < NL80211_CHAN_WIDTH_40) { ci_bw_idx = 0; cmd.co_run_bw_primary = 0; } else { cmd.co_run_bw_primary = 1; if (chan->def.center_freq1 > chan->def.chan->center_freq) ci_bw_idx = 2; else ci_bw_idx = 1; } cmd.bt_primary_ci = iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx]; cmd.primary_ch_phy_id = *((u16 *)data.primary->drv_priv); } if (data.secondary) { struct ieee80211_chanctx_conf *chan = data.secondary; if (WARN_ON(!data.secondary->def.chan)) { rcu_read_unlock(); return; } if (chan->def.width < NL80211_CHAN_WIDTH_40) { ci_bw_idx = 0; cmd.co_run_bw_secondary = 0; } else { cmd.co_run_bw_secondary = 1; if (chan->def.center_freq1 > chan->def.chan->center_freq) ci_bw_idx = 2; else ci_bw_idx = 1; } cmd.bt_secondary_ci = iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx]; cmd.secondary_ch_phy_id = *((u16 *)data.secondary->drv_priv); } rcu_read_unlock(); /* Don't spam the fw with the same command over and over */ if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) { if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, CMD_SYNC, sizeof(cmd), &cmd)) IWL_ERR(mvm, "Failed to send BT_CI cmd"); memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd)); } /* * If there are no BSS / P2P client interfaces, reduced Tx Power is * irrelevant since it is based on the RSSI coming from the beacon. * Use BT_KILL_MSK_DEFAULT in that case. */ data.reduced_tx_power = data.reduced_tx_power && data.num_bss_ifaces; if (iwl_mvm_bt_udpate_ctrl_kill_msk(mvm, data.reduced_tx_power)) IWL_ERR(mvm, "Failed to update the ctrl_kill_msk\n"); } /* upon association, the fw will send in BT Coex notification */ int iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, struct iwl_device_cmd *dev_cmd) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data; IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n"); IWL_DEBUG_COEX(mvm, "\tBT status: %s\n", notif->bt_status ? "ON" : "OFF"); IWL_DEBUG_COEX(mvm, "\tBT open conn %d\n", notif->bt_open_conn); IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance); IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n", le32_to_cpu(notif->primary_ch_lut)); IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n", le32_to_cpu(notif->secondary_ch_lut)); IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n", le32_to_cpu(notif->bt_activity_grading)); IWL_DEBUG_COEX(mvm, "\tBT agg traffic load %d\n", notif->bt_agg_traffic_load); /* remember this notification for future use: rssi fluctuations */ memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif)); iwl_mvm_bt_coex_notif_handle(mvm); /* * This is an async handler for a notification, returning anything other * than 0 doesn't make sense even if HCMD failed. */ return 0; } static void iwl_mvm_bt_rssi_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv; struct iwl_bt_iterator_data *data = _data; struct iwl_mvm *mvm = data->mvm; struct ieee80211_sta *sta; struct iwl_mvm_sta *mvmsta; struct ieee80211_chanctx_conf *chanctx_conf; rcu_read_lock(); chanctx_conf = rcu_dereference(vif->chanctx_conf); /* If channel context is invalid or not on 2.4GHz - don't count it */ if (!chanctx_conf || chanctx_conf->def.chan->band != IEEE80211_BAND_2GHZ) { rcu_read_unlock(); return; } rcu_read_unlock(); if (vif->type != NL80211_IFTYPE_STATION || mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) return; sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], lockdep_is_held(&mvm->mutex)); /* This can happen if the station has been removed right now */ if (IS_ERR_OR_NULL(sta)) return; mvmsta = iwl_mvm_sta_from_mac80211(sta); data->num_bss_ifaces++; /* * This interface doesn't support reduced Tx power (because of low * RSSI probably), then set bt_kill_msk to default values. */ if (!mvmsta->bt_reduced_txpower) data->reduced_tx_power = false; /* else - possibly leave it to BT_KILL_MSK_REDUCED_TXPOW */ } void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif, enum ieee80211_rssi_event rssi_event) { struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv; struct iwl_bt_iterator_data data = { .mvm = mvm, .reduced_tx_power = true, }; int ret; lockdep_assert_held(&mvm->mutex); /* * Rssi update while not associated - can happen since the statistics * are handled asynchronously */ if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) return; /* No BT - reports should be disabled */ if (!mvm->last_bt_notif.bt_status) return; IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid, rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW"); /* * Check if rssi is good enough for reduced Tx power, but not in loose * scheme. */ if (rssi_event == RSSI_EVENT_LOW || mvm->cfg->bt_shared_single_ant || iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT) ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false); else ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true); if (ret) IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n"); ieee80211_iterate_active_interfaces_atomic( mvm->hw, IEEE80211_IFACE_ITER_NORMAL, iwl_mvm_bt_rssi_iterator, &data); /* * If there are no BSS / P2P client interfaces, reduced Tx Power is * irrelevant since it is based on the RSSI coming from the beacon. * Use BT_KILL_MSK_DEFAULT in that case. */ data.reduced_tx_power = data.reduced_tx_power && data.num_bss_ifaces; if (iwl_mvm_bt_udpate_ctrl_kill_msk(mvm, data.reduced_tx_power)) IWL_ERR(mvm, "Failed to update the ctrl_kill_msk\n"); } #define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000) #define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200) u16 iwl_mvm_bt_coex_agg_time_limit(struct iwl_mvm *mvm, struct ieee80211_sta *sta) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); enum iwl_bt_coex_lut_type lut_type; if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC) return LINK_QUAL_AGG_TIME_LIMIT_DEF; lut_type = iwl_get_coex_type(mvm, mvmsta->vif); if (lut_type == BT_COEX_LOOSE_LUT) return LINK_QUAL_AGG_TIME_LIMIT_DEF; /* tight coex, high bt traffic, reduce AGG time limit */ return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT; } bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm, struct ieee80211_sta *sta) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC) return true; /* * In Tight, BT can't Rx while we Tx, so use both antennas since BT is * already killed. * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while we * Tx. */ return iwl_get_coex_type(mvm, mvmsta->vif) == BT_COEX_TIGHT_LUT; } void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm) { if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWBT_COEX)) return; iwl_mvm_bt_coex_notif_handle(mvm); }