/******************************************************************************
*
* 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
/* BT Antenna Coupling Threshold (dB) */
#define IWL_BT_ANTENNA_COUPLING_THRESHOLD (35)
#define IWL_BT_LOAD_FORCE_SISO_THRESHOLD (3)
#define BT_ENABLE_REDUCED_TXPOWER_THRESHOLD (-62)
#define BT_DISABLE_REDUCED_TXPOWER_THRESHOLD (-65)
#define BT_REDUCED_TX_POWER_BIT BIT(7)
static inline bool is_loose_coex(void)
{
return iwlwifi_mod_params.ant_coupling >
IWL_BT_ANTENNA_COUPLING_THRESHOLD;
}
int iwl_send_bt_prio_tbl(struct iwl_mvm *mvm)
{
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);
}
static int iwl_send_bt_env(struct iwl_mvm *mvm, u8 action, u8 type)
{
struct iwl_bt_coex_prot_env_cmd env_cmd;
int ret;
env_cmd.action = action;
env_cmd.type = type;
ret = iwl_mvm_send_cmd_pdu(mvm, BT_COEX_PROT_ENV, CMD_SYNC,
sizeof(env_cmd), &env_cmd);
if (ret)
IWL_ERR(mvm, "failed to send BT env command\n");
return ret;
}
enum iwl_bt_kill_msk {
BT_KILL_MSK_DEFAULT,
BT_KILL_MSK_SCO_HID_A2DP,
BT_KILL_MSK_REDUCED_TXPOW,
BT_KILL_MSK_MAX,
};
static 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,
};
static 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,
};
#define IWL_BT_DEFAULT_BOOST (0xf0f0f0f0)
/* Tight Coex */
static const __le32 iwl_tight_lookup[BT_COEX_LUT_SIZE] = {
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 Coex */
static const __le32 iwl_loose_lookup[BT_COEX_LUT_SIZE] = {
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),
};
/* Full concurrency */
static const __le32 iwl_concurrent_lookup[BT_COEX_LUT_SIZE] = {
cpu_to_le32(0xaaaaaaaa),
cpu_to_le32(0xaaaaaaaa),
cpu_to_le32(0xaaaaaaaa),
cpu_to_le32(0xaaaaaaaa),
cpu_to_le32(0xaaaaaaaa),
cpu_to_le32(0xaaaaaaaa),
cpu_to_le32(0xaaaaaaaa),
cpu_to_le32(0xaaaaaaaa),
cpu_to_le32(0x00000000),
cpu_to_le32(0x00000000),
cpu_to_le32(0x00000000),
cpu_to_le32(0x00000000),
};
/* single shared antenna */
static const __le32 iwl_single_shared_ant_lookup[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),
};
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;
/* go to CALIB state in internal BT-Coex state machine */
ret = iwl_send_bt_env(mvm, BT_COEX_ENV_OPEN,
BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
if (ret)
return ret;
ret = iwl_send_bt_env(mvm, BT_COEX_ENV_CLOSE,
BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
if (ret)
return ret;
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->bt3_time_t7_value = 1;
bt_cmd->bt3_prio_sample_time = 2;
bt_cmd->bt3_timer_t2_value = 0xc;
bt_cmd->flags = iwlwifi_mod_params.bt_coex_active ?
BT_COEX_NW : BT_COEX_DISABLE;
bt_cmd->flags |= BT_CH_PRIMARY_EN | BT_SYNC_2_BT_DISABLE;
bt_cmd->valid_bit_msk = cpu_to_le16(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);
if (mvm->cfg->bt_shared_single_ant)
memcpy(&bt_cmd->decision_lut, iwl_single_shared_ant_lookup,
sizeof(iwl_single_shared_ant_lookup));
else if (is_loose_coex())
memcpy(&bt_cmd->decision_lut, iwl_loose_lookup,
sizeof(iwl_tight_lookup));
else
memcpy(&bt_cmd->decision_lut, iwl_tight_lookup,
sizeof(iwl_tight_lookup));
bt_cmd->bt_prio_boost = cpu_to_le32(IWL_BT_DEFAULT_BOOST);
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));
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->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_le16(BT_VALID_KILL_ACK | BT_VALID_KILL_CTS);
IWL_DEBUG_COEX(mvm, "bt_kill_msk = %d\n", 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;
/* This can happen if the station has been removed right now */
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));
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->valid_bit_msk = cpu_to_le16(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;
};
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;
enum ieee80211_band band;
int ave_rssi;
lockdep_assert_held(&mvm->mutex);
if (vif->type != NL80211_IFTYPE_STATION)
return;
rcu_read_lock();
chanctx_conf = rcu_dereference(vif->chanctx_conf);
if (chanctx_conf && chanctx_conf->def.chan)
band = chanctx_conf->def.chan->band;
else
band = -1;
rcu_read_unlock();
smps_mode = IEEE80211_SMPS_AUTOMATIC;
/* non associated BSSes aren't to be considered */
if (!vif->bss_conf.assoc)
return;
if (band != IEEE80211_BAND_2GHZ) {
iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
smps_mode);
return;
}
if (data->notif->bt_status)
smps_mode = IEEE80211_SMPS_DYNAMIC;
if (data->notif->bt_traffic_load >= IWL_BT_LOAD_FORCE_SISO_THRESHOLD)
smps_mode = IEEE80211_SMPS_STATIC;
IWL_DEBUG_COEX(data->mvm,
"mac %d: bt_status %d traffic_load %d smps_req %d\n",
mvmvif->id, data->notif->bt_status,
data->notif->bt_traffic_load, 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 (is_loose_coex())
return;
data->num_bss_ifaces++;
/* reduced Txpower only if there are open BT connections, so ...*/
if (!BT_MBOX_MSG(data->notif, 3, OPEN_CON_2)) {
/* ... 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. */
ieee80211_disable_rssi_reports(vif);
return;
}
ave_rssi = ieee80211_ave_rssi(vif);
/* 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 */
ieee80211_enable_rssi_reports(vif, BT_DISABLE_REDUCED_TXPOWER_THRESHOLD,
BT_ENABLE_REDUCED_TXPOWER_THRESHOLD);
}
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,
};
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.
*/
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 %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));
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;
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;
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.
*/
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");
out_unlock:
mutex_unlock(&mvm->mutex);
}
void iwl_mvm_bt_coex_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
iwl_mvm_bt_coex_notif_handle(mvm);
}
