diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/bt-coex.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/bt-coex.c | 347 |
1 files changed, 347 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 000000000000..47954deb6493 --- /dev/null +++ b/drivers/net/wireless/iwlwifi/mvm/bt-coex.c @@ -0,0 +1,347 @@ +/****************************************************************************** + * + * 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 "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 + +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] = { + 0xffffffff, + 0xfffffc00, + 0, +}; + +static const u32 iwl_bt_cts_kill_msk[BT_KILL_MSK_MAX] = { + 0xffffffff, + 0xfffffc00, + 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), +}; + +/* BT Antenna Coupling Threshold (dB) */ +#define IWL_BT_ANTENNA_COUPLING_THRESHOLD (35) + +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 |= iwlwifi_mod_params.bt_ch_announce ? + BT_CH_PRIMARY_EN | BT_CH_SECONDARY_EN : 0; + cmd.flags |= 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 (iwlwifi_mod_params.ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) + 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]); + + /* 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); +} + +struct iwl_bt_notif_iterator_data { + struct iwl_mvm *mvm; + struct iwl_bt_coex_profile_notif *notif; +}; + +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_notif_iterator_data *data = _data; + struct ieee80211_chanctx_conf *chanctx_conf; + enum ieee80211_smps_mode smps_mode; + enum ieee80211_band band; + + 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(); + + if (band != IEEE80211_BAND_2GHZ) + return; + + smps_mode = IEEE80211_SMPS_AUTOMATIC; + + if (data->notif->bt_status) + smps_mode = IEEE80211_SMPS_DYNAMIC; + + if (data->notif->bt_traffic_load) + 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); +} + +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_notif_iterator_data data = { + .mvm = mvm, + .notif = notif, + }; + struct iwl_bt_coex_cmd cmd = {}; + enum iwl_bt_kill_msk bt_kill_msk; + + 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); + + /* 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; + + /* Don't send HCMD if there is no update */ + if (bt_kill_msk == mvm->bt_kill_msk) + return 0; + + IWL_DEBUG_COEX(mvm, + "Udpate kill_msk: %d\n\t 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"); + + 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); + + if (iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, CMD_SYNC, sizeof(cmd), &cmd)) + IWL_ERR(mvm, "Failed to sent BT Coex CMD\n"); + + /* This handler is ASYNC */ + return 0; +} |