2b76ef1308
This allows to have better wifi TPT when BT is active under good RSSI conditions. Wifi will have better chance to send Acks and Cts even if BT is active. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
570 lines
18 KiB
C
570 lines
18 KiB
C
/******************************************************************************
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2013 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
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* USA
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*
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* The full GNU General Public License is included in this distribution
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* in the file called COPYING.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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* BSD LICENSE
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*
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* Copyright(c) 2013 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*****************************************************************************/
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#include <net/mac80211.h>
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#include "fw-api-bt-coex.h"
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#include "iwl-modparams.h"
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#include "mvm.h"
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#include "iwl-debug.h"
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#define EVENT_PRIO_ANT(_evt, _prio, _shrd_ant) \
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[(_evt)] = (((_prio) << BT_COEX_PRIO_TBL_PRIO_POS) | \
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((_shrd_ant) << BT_COEX_PRIO_TBL_SHRD_ANT_POS))
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static const u8 iwl_bt_prio_tbl[BT_COEX_PRIO_TBL_EVT_MAX] = {
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EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_INIT_CALIB1,
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BT_COEX_PRIO_TBL_PRIO_BYPASS, 0),
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EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_INIT_CALIB2,
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BT_COEX_PRIO_TBL_PRIO_BYPASS, 1),
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EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_PERIODIC_CALIB_LOW1,
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BT_COEX_PRIO_TBL_PRIO_LOW, 0),
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EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_PERIODIC_CALIB_LOW2,
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BT_COEX_PRIO_TBL_PRIO_LOW, 1),
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EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_PERIODIC_CALIB_HIGH1,
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BT_COEX_PRIO_TBL_PRIO_HIGH, 0),
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EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_PERIODIC_CALIB_HIGH2,
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BT_COEX_PRIO_TBL_PRIO_HIGH, 1),
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EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_DTIM,
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BT_COEX_PRIO_TBL_DISABLED, 0),
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EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_SCAN52,
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BT_COEX_PRIO_TBL_PRIO_COEX_OFF, 0),
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EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_SCAN24,
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BT_COEX_PRIO_TBL_PRIO_COEX_ON, 0),
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EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_IDLE,
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BT_COEX_PRIO_TBL_PRIO_COEX_IDLE, 0),
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0, 0, 0, 0, 0, 0,
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};
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#undef EVENT_PRIO_ANT
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/* BT Antenna Coupling Threshold (dB) */
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#define IWL_BT_ANTENNA_COUPLING_THRESHOLD (35)
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#define IWL_BT_LOAD_FORCE_SISO_THRESHOLD (3)
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#define BT_ENABLE_REDUCED_TXPOWER_THRESHOLD (-62)
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#define BT_DISABLE_REDUCED_TXPOWER_THRESHOLD (-65)
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#define BT_REDUCED_TX_POWER_BIT BIT(7)
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static inline bool is_loose_coex(void)
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{
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return iwlwifi_mod_params.ant_coupling >
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IWL_BT_ANTENNA_COUPLING_THRESHOLD;
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}
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int iwl_send_bt_prio_tbl(struct iwl_mvm *mvm)
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{
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return iwl_mvm_send_cmd_pdu(mvm, BT_COEX_PRIO_TABLE, CMD_SYNC,
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sizeof(struct iwl_bt_coex_prio_tbl_cmd),
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&iwl_bt_prio_tbl);
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}
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static int iwl_send_bt_env(struct iwl_mvm *mvm, u8 action, u8 type)
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{
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struct iwl_bt_coex_prot_env_cmd env_cmd;
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int ret;
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env_cmd.action = action;
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env_cmd.type = type;
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ret = iwl_mvm_send_cmd_pdu(mvm, BT_COEX_PROT_ENV, CMD_SYNC,
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sizeof(env_cmd), &env_cmd);
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if (ret)
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IWL_ERR(mvm, "failed to send BT env command\n");
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return ret;
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}
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enum iwl_bt_kill_msk {
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BT_KILL_MSK_DEFAULT,
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BT_KILL_MSK_SCO_HID_A2DP,
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BT_KILL_MSK_REDUCED_TXPOW,
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BT_KILL_MSK_MAX,
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};
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static const u32 iwl_bt_ack_kill_msk[BT_KILL_MSK_MAX] = {
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[BT_KILL_MSK_DEFAULT] = 0xffff0000,
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[BT_KILL_MSK_SCO_HID_A2DP] = 0xffffffff,
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[BT_KILL_MSK_REDUCED_TXPOW] = 0,
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};
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static const u32 iwl_bt_cts_kill_msk[BT_KILL_MSK_MAX] = {
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[BT_KILL_MSK_DEFAULT] = 0xffff0000,
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[BT_KILL_MSK_SCO_HID_A2DP] = 0xffffffff,
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[BT_KILL_MSK_REDUCED_TXPOW] = 0,
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};
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#define IWL_BT_DEFAULT_BOOST (0xf0f0f0f0)
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/* Tight Coex */
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static const __le32 iwl_tight_lookup[BT_COEX_LUT_SIZE] = {
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cpu_to_le32(0xaaaaaaaa),
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cpu_to_le32(0xaaaaaaaa),
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cpu_to_le32(0xaeaaaaaa),
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cpu_to_le32(0xaaaaaaaa),
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cpu_to_le32(0xcc00ff28),
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cpu_to_le32(0x0000aaaa),
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cpu_to_le32(0xcc00aaaa),
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cpu_to_le32(0x0000aaaa),
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cpu_to_le32(0xc0004000),
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cpu_to_le32(0x00000000),
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cpu_to_le32(0xf0005000),
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cpu_to_le32(0xf0005000),
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};
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/* Loose Coex */
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static const __le32 iwl_loose_lookup[BT_COEX_LUT_SIZE] = {
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cpu_to_le32(0xaaaaaaaa),
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cpu_to_le32(0xaaaaaaaa),
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cpu_to_le32(0xaeaaaaaa),
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cpu_to_le32(0xaaaaaaaa),
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cpu_to_le32(0xcc00ff28),
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cpu_to_le32(0x0000aaaa),
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cpu_to_le32(0xcc00aaaa),
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cpu_to_le32(0x0000aaaa),
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cpu_to_le32(0x00000000),
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cpu_to_le32(0x00000000),
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cpu_to_le32(0xf0005000),
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cpu_to_le32(0xf0005000),
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};
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/* Full concurrency */
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static const __le32 iwl_concurrent_lookup[BT_COEX_LUT_SIZE] = {
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cpu_to_le32(0xaaaaaaaa),
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cpu_to_le32(0xaaaaaaaa),
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cpu_to_le32(0xaaaaaaaa),
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cpu_to_le32(0xaaaaaaaa),
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cpu_to_le32(0xaaaaaaaa),
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cpu_to_le32(0xaaaaaaaa),
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cpu_to_le32(0xaaaaaaaa),
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cpu_to_le32(0xaaaaaaaa),
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cpu_to_le32(0x00000000),
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cpu_to_le32(0x00000000),
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cpu_to_le32(0x00000000),
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cpu_to_le32(0x00000000),
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};
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int iwl_send_bt_init_conf(struct iwl_mvm *mvm)
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{
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struct iwl_bt_coex_cmd cmd = {
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.max_kill = 5,
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.bt3_time_t7_value = 1,
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.bt3_prio_sample_time = 2,
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.bt3_timer_t2_value = 0xc,
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};
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int ret;
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cmd.flags = iwlwifi_mod_params.bt_coex_active ?
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BT_COEX_NW : BT_COEX_DISABLE;
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cmd.flags |= BT_CH_PRIMARY_EN | BT_SYNC_2_BT_DISABLE;
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cmd.valid_bit_msk = cpu_to_le16(BT_VALID_ENABLE |
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BT_VALID_BT_PRIO_BOOST |
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BT_VALID_MAX_KILL |
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BT_VALID_3W_TMRS |
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BT_VALID_KILL_ACK |
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BT_VALID_KILL_CTS |
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BT_VALID_REDUCED_TX_POWER |
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BT_VALID_LUT);
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if (is_loose_coex())
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memcpy(&cmd.decision_lut, iwl_loose_lookup,
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sizeof(iwl_tight_lookup));
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else
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memcpy(&cmd.decision_lut, iwl_tight_lookup,
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sizeof(iwl_tight_lookup));
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cmd.bt_prio_boost = cpu_to_le32(IWL_BT_DEFAULT_BOOST);
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cmd.kill_ack_msk =
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cpu_to_le32(iwl_bt_ack_kill_msk[BT_KILL_MSK_DEFAULT]);
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cmd.kill_cts_msk =
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cpu_to_le32(iwl_bt_cts_kill_msk[BT_KILL_MSK_DEFAULT]);
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memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
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/* go to CALIB state in internal BT-Coex state machine */
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ret = iwl_send_bt_env(mvm, BT_COEX_ENV_OPEN,
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BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
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if (ret)
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return ret;
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ret = iwl_send_bt_env(mvm, BT_COEX_ENV_CLOSE,
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BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
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if (ret)
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return ret;
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return iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, CMD_SYNC,
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sizeof(cmd), &cmd);
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}
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static int iwl_mvm_bt_udpate_ctrl_kill_msk(struct iwl_mvm *mvm,
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bool reduced_tx_power)
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{
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enum iwl_bt_kill_msk bt_kill_msk;
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struct iwl_bt_coex_cmd cmd = {};
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struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif;
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lockdep_assert_held(&mvm->mutex);
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if (reduced_tx_power) {
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/* Reduced Tx power has precedence on the type of the profile */
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bt_kill_msk = BT_KILL_MSK_REDUCED_TXPOW;
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} else {
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/* Low latency BT profile is active: give higher prio to BT */
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if (BT_MBOX_MSG(notif, 3, SCO_STATE) ||
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BT_MBOX_MSG(notif, 3, A2DP_STATE) ||
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BT_MBOX_MSG(notif, 3, SNIFF_STATE))
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bt_kill_msk = BT_KILL_MSK_SCO_HID_A2DP;
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else
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bt_kill_msk = BT_KILL_MSK_DEFAULT;
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}
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IWL_DEBUG_COEX(mvm,
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"Update kill_msk: %d - SCO %sactive A2DP %sactive SNIFF %sactive\n",
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bt_kill_msk,
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BT_MBOX_MSG(notif, 3, SCO_STATE) ? "" : "in",
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BT_MBOX_MSG(notif, 3, A2DP_STATE) ? "" : "in",
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BT_MBOX_MSG(notif, 3, SNIFF_STATE) ? "" : "in");
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/* Don't send HCMD if there is no update */
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if (bt_kill_msk == mvm->bt_kill_msk)
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return 0;
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mvm->bt_kill_msk = bt_kill_msk;
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cmd.kill_ack_msk = cpu_to_le32(iwl_bt_ack_kill_msk[bt_kill_msk]);
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cmd.kill_cts_msk = cpu_to_le32(iwl_bt_cts_kill_msk[bt_kill_msk]);
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cmd.valid_bit_msk = cpu_to_le16(BT_VALID_KILL_ACK | BT_VALID_KILL_CTS);
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IWL_DEBUG_COEX(mvm, "bt_kill_msk = %d\n", bt_kill_msk);
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return iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, CMD_SYNC,
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sizeof(cmd), &cmd);
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}
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static int iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm *mvm, u8 sta_id,
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bool enable)
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{
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struct iwl_bt_coex_cmd cmd = {
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.valid_bit_msk = cpu_to_le16(BT_VALID_REDUCED_TX_POWER),
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.bt_reduced_tx_power = sta_id,
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};
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struct ieee80211_sta *sta;
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struct iwl_mvm_sta *mvmsta;
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/* This can happen if the station has been removed right now */
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if (sta_id == IWL_MVM_STATION_COUNT)
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return 0;
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sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
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lockdep_is_held(&mvm->mutex));
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mvmsta = (void *)sta->drv_priv;
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/* nothing to do */
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if (mvmsta->bt_reduced_txpower == enable)
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return 0;
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if (enable)
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cmd.bt_reduced_tx_power |= BT_REDUCED_TX_POWER_BIT;
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IWL_DEBUG_COEX(mvm, "%sable reduced Tx Power for sta %d\n",
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enable ? "en" : "dis", sta_id);
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mvmsta->bt_reduced_txpower = enable;
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/* Send ASYNC since this can be sent from an atomic context */
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return iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, CMD_ASYNC,
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sizeof(cmd), &cmd);
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}
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struct iwl_bt_iterator_data {
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struct iwl_bt_coex_profile_notif *notif;
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enum iwl_bt_kill_msk bt_kill_msk;
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struct iwl_mvm *mvm;
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u32 num_bss_ifaces;
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};
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static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac,
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struct ieee80211_vif *vif)
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{
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struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
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struct iwl_bt_iterator_data *data = _data;
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struct iwl_mvm *mvm = data->mvm;
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struct ieee80211_chanctx_conf *chanctx_conf;
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enum ieee80211_smps_mode smps_mode;
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enum ieee80211_band band;
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int ave_rssi;
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if (vif->type != NL80211_IFTYPE_STATION)
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return;
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rcu_read_lock();
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chanctx_conf = rcu_dereference(vif->chanctx_conf);
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if (chanctx_conf && chanctx_conf->def.chan)
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band = chanctx_conf->def.chan->band;
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else
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band = -1;
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rcu_read_unlock();
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if (band != IEEE80211_BAND_2GHZ)
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return;
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smps_mode = IEEE80211_SMPS_AUTOMATIC;
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if (data->notif->bt_status)
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smps_mode = IEEE80211_SMPS_DYNAMIC;
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if (data->notif->bt_traffic_load >= IWL_BT_LOAD_FORCE_SISO_THRESHOLD)
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smps_mode = IEEE80211_SMPS_STATIC;
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IWL_DEBUG_COEX(data->mvm,
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"mac %d: bt_status %d traffic_load %d smps_req %d\n",
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mvmvif->id, data->notif->bt_status,
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data->notif->bt_traffic_load, smps_mode);
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ieee80211_request_smps(vif, smps_mode);
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/* don't reduce the Tx power if in loose scheme */
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if (is_loose_coex())
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return;
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data->num_bss_ifaces++;
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/* reduced Txpower only if there are open BT connections, so ...*/
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if (!BT_MBOX_MSG(data->notif, 3, OPEN_CON_2)) {
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/* ... cancel reduced Tx power ... */
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if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false))
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IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
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/* ... use default values for bt_kill_msk ... */
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data->bt_kill_msk = BT_KILL_MSK_DEFAULT;
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/* ... and there is no need to get reports on RSSI any more. */
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ieee80211_disable_rssi_reports(vif);
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return;
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}
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ave_rssi = ieee80211_ave_rssi(vif);
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/* if the RSSI isn't valid, fake it is very low */
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if (!ave_rssi)
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ave_rssi = -100;
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if (ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) {
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if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true))
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IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
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/*
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* bt_kill_msk can be BT_KILL_MSK_REDUCED_TXPOW only if all the
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* BSS / P2P clients have rssi above threshold.
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* We set the bt_kill_msk to BT_KILL_MSK_REDUCED_TXPOW before
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* the iteration, if one interface's rssi isn't good enough,
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* bt_kill_msk will be set to default values.
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*/
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} 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->bt_kill_msk = BT_KILL_MSK_DEFAULT;
|
|
}
|
|
|
|
/* Begin to monitor the RSSI: it may influence the reduced Tx power */
|
|
ieee80211_enable_rssi_reports(vif, BT_DISABLE_REDUCED_TXPOWER_THRESHOLD,
|
|
BT_ENABLE_REDUCED_TXPOWER_THRESHOLD);
|
|
}
|
|
|
|
/* 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;
|
|
struct iwl_bt_iterator_data data = {
|
|
.mvm = mvm,
|
|
.notif = notif,
|
|
.bt_kill_msk = BT_KILL_MSK_REDUCED_TXPOW,
|
|
};
|
|
bool reduced_tx_power;
|
|
|
|
IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n");
|
|
IWL_DEBUG_COEX(mvm, "\tBT %salive\n", notif->bt_status ? "" : "not ");
|
|
IWL_DEBUG_COEX(mvm, "\tBT open conn %d\n", notif->bt_open_conn);
|
|
IWL_DEBUG_COEX(mvm, "\tBT traffic load %d\n", notif->bt_traffic_load);
|
|
IWL_DEBUG_COEX(mvm, "\tBT agg traffic load %d\n",
|
|
notif->bt_agg_traffic_load);
|
|
IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance);
|
|
|
|
/* remember this notification for future use: rssi fluctuations */
|
|
memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif));
|
|
|
|
ieee80211_iterate_active_interfaces_atomic(
|
|
mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
|
|
iwl_mvm_bt_notif_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.
|
|
*/
|
|
if (!data.num_bss_ifaces)
|
|
data.bt_kill_msk = BT_KILL_MSK_DEFAULT;
|
|
|
|
reduced_tx_power = data.num_bss_ifaces &&
|
|
data.bt_kill_msk == BT_KILL_MSK_REDUCED_TXPOW;
|
|
|
|
if (iwl_mvm_bt_udpate_ctrl_kill_msk(mvm, reduced_tx_power))
|
|
IWL_ERR(mvm, "Failed to update the ctrl_kill_msk\n");
|
|
|
|
/*
|
|
* 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;
|
|
|
|
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;
|
|
|
|
/*
|
|
* 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->bt_kill_msk = BT_KILL_MSK_DEFAULT;
|
|
/* 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;
|
|
bool reduced_tx_power;
|
|
struct iwl_bt_iterator_data data = {
|
|
.mvm = mvm,
|
|
.bt_kill_msk = BT_KILL_MSK_REDUCED_TXPOW,
|
|
};
|
|
int ret;
|
|
|
|
mutex_lock(&mvm->mutex);
|
|
|
|
/* Rssi update while not associated ?! */
|
|
if (WARN_ON_ONCE(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
|
|
goto out_unlock;
|
|
|
|
/* No open connection - reports should be disabled */
|
|
if (!BT_MBOX_MSG(&mvm->last_bt_notif, 3, OPEN_CON_2))
|
|
goto out_unlock;
|
|
|
|
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 || is_loose_coex())
|
|
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.
|
|
*/
|
|
if (!data.num_bss_ifaces)
|
|
data.bt_kill_msk = BT_KILL_MSK_DEFAULT;
|
|
|
|
reduced_tx_power = data.num_bss_ifaces &&
|
|
data.bt_kill_msk == BT_KILL_MSK_REDUCED_TXPOW;
|
|
|
|
if (iwl_mvm_bt_udpate_ctrl_kill_msk(mvm, reduced_tx_power))
|
|
IWL_ERR(mvm, "Failed to update the ctrl_kill_msk\n");
|
|
|
|
out_unlock:
|
|
mutex_unlock(&mvm->mutex);
|
|
}
|