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Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/bt-coex.c')
-rw-r--r--drivers/net/wireless/iwlwifi/mvm/bt-coex.c589
1 files changed, 589 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/bt-coex.c b/drivers/net/wireless/iwlwifi/mvm/bt-coex.c
new file mode 100644
index 0000000..810bfa5
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/mvm/bt-coex.c
@@ -0,0 +1,589 @@
+/******************************************************************************
+ *
+ * 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(0xaeaaaaaa),
+ 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),
+};
+
+int iwl_send_bt_init_conf(struct iwl_mvm *mvm)
+{
+ struct iwl_bt_coex_cmd cmd = {
+ .max_kill = 5,
+ .bt3_time_t7_value = 1,
+ .bt3_prio_sample_time = 2,
+ .bt3_timer_t2_value = 0xc,
+ };
+ int ret;
+
+ cmd.flags = iwlwifi_mod_params.bt_coex_active ?
+ BT_COEX_NW : BT_COEX_DISABLE;
+ cmd.flags |= BT_CH_PRIMARY_EN | BT_SYNC_2_BT_DISABLE;
+
+ 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 (is_loose_coex())
+ memcpy(&cmd.decision_lut, iwl_loose_lookup,
+ sizeof(iwl_tight_lookup));
+ else
+ memcpy(&cmd.decision_lut, iwl_tight_lookup,
+ sizeof(iwl_tight_lookup));
+
+ cmd.bt_prio_boost = cpu_to_le32(IWL_BT_DEFAULT_BOOST);
+ cmd.kill_ack_msk =
+ cpu_to_le32(iwl_bt_ack_kill_msk[BT_KILL_MSK_DEFAULT]);
+ 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));
+
+ /* 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;
+
+ return iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, CMD_SYNC,
+ sizeof(cmd), &cmd);
+}
+
+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 cmd = {};
+ struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif;
+
+ 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;
+ cmd.kill_ack_msk = cpu_to_le32(iwl_bt_ack_kill_msk[bt_kill_msk]);
+ cmd.kill_cts_msk = cpu_to_le32(iwl_bt_cts_kill_msk[bt_kill_msk]);
+ 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);
+ return iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, CMD_SYNC,
+ sizeof(cmd), &cmd);
+}
+
+static int iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm *mvm, u8 sta_id,
+ bool enable)
+{
+ struct iwl_bt_coex_cmd cmd = {
+ .valid_bit_msk = cpu_to_le16(BT_VALID_REDUCED_TX_POWER),
+ .bt_reduced_tx_power = sta_id,
+ };
+ struct ieee80211_sta *sta;
+ struct iwl_mvm_sta *mvmsta;
+
+ /* 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;
+
+ if (enable)
+ 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;
+
+ /* Send ASYNC since this can be sent from an atomic context */
+ return iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, CMD_ASYNC,
+ sizeof(cmd), &cmd);
+}
+
+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;
+
+ 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;
+
+ if (band != IEEE80211_BAND_2GHZ) {
+ ieee80211_request_smps(vif, 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);
+
+ ieee80211_request_smps(vif, 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;
+
+ /*
+ * 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)
+{
+ struct ieee80211_chanctx_conf *chanctx_conf;
+ enum ieee80211_band band;
+
+ 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();
+
+ /* if we are in 2GHz we will get a notification from the fw */
+ if (band == IEEE80211_BAND_2GHZ)
+ return;
+
+ /* else, we can remove all the constraints */
+ memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
+
+ iwl_mvm_bt_coex_notif_handle(mvm);
+}
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