| /****************************************************************************** |
| * |
| * 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 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 <ilw@linux.intel.com> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| * |
| * BSD LICENSE |
| * |
| * Copyright(c) 2013 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 <net/mac80211.h> |
| |
| #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(0xFE00000000ULL), |
| cpu_to_le64(0x0ULL), |
| cpu_to_le64(0x0) |
| }, |
| }; |
| |
| 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_MULTI_PRIO_LUT | |
| 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); |
| |
| 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 = (void *)sta->drv_priv; |
| |
| /* 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.primary->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)); |
| mvmsta = (void *)sta->drv_priv; |
| |
| 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 ?! */ |
| if (WARN_ON_ONCE(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 = (void *)sta->drv_priv; |
| enum iwl_bt_coex_lut_type lut_type; |
| |
| if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < |
| BT_LOW_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 = (void *)sta->drv_priv; |
| |
| 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); |
| } |