diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/coex.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/coex.c | 1322 |
1 files changed, 1322 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/coex.c b/drivers/net/wireless/iwlwifi/mvm/coex.c new file mode 100644 index 000000000000..685f7e8e6943 --- /dev/null +++ b/drivers/net/wireless/iwlwifi/mvm/coex.c @@ -0,0 +1,1322 @@ +/****************************************************************************** + * + * 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 - 2014 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 - 2014 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 <linux/ieee80211.h> +#include <linux/etherdevice.h> +#include <net/mac80211.h> + +#include "fw-api-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(0xFFC0000000ULL), + cpu_to_le64(0x0ULL), + cpu_to_le64(0x0ULL) + }, +}; + +static const __le32 iwl_bt_mprio_lut[BT_COEX_MULTI_PRIO_LUT_SIZE] = { + cpu_to_le32(0x22002200), + cpu_to_le32(0x33113311), +}; + +struct corunning_block_luts { + u8 range; + __le32 lut20[BT_COEX_CORUN_LUT_SIZE]; +}; + +/* + * Ranges for the antenna coupling calibration / co-running block LUT: + * LUT0: [ 0, 12[ + * LUT1: [12, 20[ + * LUT2: [20, 21[ + * LUT3: [21, 23[ + * LUT4: [23, 27[ + * LUT5: [27, 30[ + * LUT6: [30, 32[ + * LUT7: [32, 33[ + * LUT8: [33, - [ + */ +static const struct corunning_block_luts antenna_coupling_ranges[] = { + { + .range = 0, + .lut20 = { + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + }, + }, + { + .range = 12, + .lut20 = { + cpu_to_le32(0x00000001), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + }, + }, + { + .range = 20, + .lut20 = { + cpu_to_le32(0x00000002), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + }, + }, + { + .range = 21, + .lut20 = { + cpu_to_le32(0x00000003), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + }, + }, + { + .range = 23, + .lut20 = { + cpu_to_le32(0x00000004), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + }, + }, + { + .range = 27, + .lut20 = { + cpu_to_le32(0x00000005), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + }, + }, + { + .range = 30, + .lut20 = { + cpu_to_le32(0x00000006), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + }, + }, + { + .range = 32, + .lut20 = { + cpu_to_le32(0x00000007), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + }, + }, + { + .range = 33, + .lut20 = { + cpu_to_le32(0x00000008), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + cpu_to_le32(0x00000000), cpu_to_le32(0x00000000), + }, + }, +}; + +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; + 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_ANT_ISOLATION | + BT_VALID_ANT_ISOLATION_THRS | + BT_VALID_TXTX_DELTA_FREQ_THRS | + BT_VALID_TXRX_MAX_FREQ_0 | + BT_VALID_SYNC_TO_SCO); + + if (IWL_MVM_BT_COEX_SYNC2SCO) + bt_cmd->flags |= cpu_to_le32(BT_COEX_SYNC2SCO); + + if (IWL_MVM_BT_COEX_CORUNNING) { + bt_cmd->valid_bit_msk = cpu_to_le32(BT_VALID_CORUN_LUT_20 | + BT_VALID_CORUN_LUT_40); + bt_cmd->flags |= cpu_to_le32(BT_COEX_CORUNNING); + } + + if (IWL_MVM_BT_COEX_MPLUT) { + bt_cmd->flags |= cpu_to_le32(BT_COEX_MPLUT); + bt_cmd->valid_bit_msk = cpu_to_le32(BT_VALID_MULTI_PRIO_LUT); + } + + 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)); + + /* Take first Co-running block LUT to get started */ + memcpy(bt_cmd->bt4_corun_lut20, antenna_coupling_ranges[0].lut20, + sizeof(bt_cmd->bt4_corun_lut20)); + memcpy(bt_cmd->bt4_corun_lut40, antenna_coupling_ranges[0].lut20, + sizeof(bt_cmd->bt4_corun_lut40)); + + 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; +} + +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_NOCOPY, }, + .flags = CMD_ASYNC, + }; + struct iwl_mvm_sta *mvmsta; + int ret; + + mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); + if (!mvmsta) + return 0; + + /* nothing to do */ + if (mvmsta->bt_reduced_txpower_dbg || + 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; + bool primary_ll; +}; + +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; + u32 bt_activity_grading; + int ave_rssi; + + lockdep_assert_held(&mvm->mutex); + + switch (vif->type) { + case NL80211_IFTYPE_STATION: + /* default smps_mode for BSS / P2P client is AUTOMATIC */ + smps_mode = IEEE80211_SMPS_AUTOMATIC; + data->num_bss_ifaces++; + + /* + * Count unassoc BSSes, relax SMSP constraints + * and disable reduced Tx Power + */ + if (!vif->bss_conf.assoc) { + iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, + smps_mode); + if (iwl_mvm_bt_coex_reduced_txp(mvm, + mvmvif->ap_sta_id, + false)) + IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n"); + return; + } + break; + case NL80211_IFTYPE_AP: + /* default smps_mode for AP / GO is OFF */ + smps_mode = IEEE80211_SMPS_OFF; + if (!mvmvif->ap_ibss_active) { + iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, + smps_mode); + return; + } + + /* the Ack / Cts kill mask must be default if AP / GO */ + data->reduced_tx_power = false; + break; + default: + return; + } + + 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)) { + /* ... relax constraints and disable rssi events */ + iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, + smps_mode); + if (vif->type == NL80211_IFTYPE_STATION) + iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0); + return; + } + + bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading); + if (bt_activity_grading >= BT_HIGH_TRAFFIC) + smps_mode = IEEE80211_SMPS_STATIC; + else if (bt_activity_grading >= BT_LOW_TRAFFIC) + smps_mode = vif->type == NL80211_IFTYPE_AP ? + IEEE80211_SMPS_OFF : + 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, bt_activity_grading, + smps_mode); + + iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, smps_mode); + + /* low latency is always primary */ + if (iwl_mvm_vif_low_latency(mvmvif)) { + data->primary_ll = true; + + data->secondary = data->primary; + data->primary = chanctx_conf; + } + + if (vif->type == NL80211_IFTYPE_AP) { + if (!mvmvif->ap_ibss_active) + return; + + if (chanctx_conf == data->primary) + return; + + if (!data->primary_ll) { + /* + * downgrade the current primary no matter what its + * type is. + */ + data->secondary = data->primary; + data->primary = chanctx_conf; + } else { + /* there is low latency vif - we will be secondary */ + data->secondary = chanctx_conf; + } + return; + } + + /* + * STA / P2P Client, try to be primary if first vif. If we are in low + * latency mode, we are already in primary and just don't do much + */ + 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; + + /* 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.secondary->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)); + + /* This can happen if the station has been removed right now */ + if (IS_ERR_OR_NULL(sta)) + return; + + mvmsta = iwl_mvm_sta_from_mac80211(sta); + + 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 - can happen since the statistics + * are handled asynchronously + */ + if (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_coex_agg_time_limit(struct iwl_mvm *mvm, + struct ieee80211_sta *sta) +{ + struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); + enum iwl_bt_coex_lut_type lut_type; + + if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < + BT_HIGH_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 = iwl_mvm_sta_from_mac80211(sta); + + 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; +} + +u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr, + struct ieee80211_tx_info *info, u8 ac) +{ + __le16 fc = hdr->frame_control; + + if (info->band != IEEE80211_BAND_2GHZ) + return 0; + + if (unlikely(mvm->bt_tx_prio)) + return mvm->bt_tx_prio - 1; + + /* High prio packet (wrt. BT coex) if it is EAPOL, MCAST or MGMT */ + if (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO || + is_multicast_ether_addr(hdr->addr1) || + ieee80211_is_ctl(fc) || ieee80211_is_mgmt(fc) || + ieee80211_is_nullfunc(fc) || ieee80211_is_qos_nullfunc(fc)) + return 3; + + switch (ac) { + case IEEE80211_AC_BE: + return 1; + case IEEE80211_AC_VO: + return 3; + case IEEE80211_AC_VI: + return 2; + default: + break; + } + + return 0; +} + +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); +} + +int iwl_mvm_rx_ant_coupling_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); + u32 ant_isolation = le32_to_cpup((void *)pkt->data); + u8 __maybe_unused lower_bound, upper_bound; + u8 lut; + + 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, + }; + + if (!IWL_MVM_BT_COEX_CORUNNING) + return 0; + + lockdep_assert_held(&mvm->mutex); + + if (ant_isolation == mvm->last_ant_isol) + return 0; + + for (lut = 0; lut < ARRAY_SIZE(antenna_coupling_ranges) - 1; lut++) + if (ant_isolation < antenna_coupling_ranges[lut + 1].range) + break; + + lower_bound = antenna_coupling_ranges[lut].range; + + if (lut < ARRAY_SIZE(antenna_coupling_ranges) - 1) + upper_bound = antenna_coupling_ranges[lut + 1].range; + else + upper_bound = antenna_coupling_ranges[lut].range; + + IWL_DEBUG_COEX(mvm, "Antenna isolation=%d in range [%d,%d[, lut=%d\n", + ant_isolation, lower_bound, upper_bound, lut); + + mvm->last_ant_isol = ant_isolation; + + if (mvm->last_corun_lut == lut) + return 0; + + mvm->last_corun_lut = lut; + + bt_cmd = kzalloc(sizeof(*bt_cmd), GFP_KERNEL); + if (!bt_cmd) + return 0; + 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_CORUN_LUT_20 | + BT_VALID_CORUN_LUT_40); + + /* For the moment, use the same LUT for 20GHz and 40GHz */ + memcpy(bt_cmd->bt4_corun_lut20, antenna_coupling_ranges[lut].lut20, + sizeof(bt_cmd->bt4_corun_lut20)); + + memcpy(bt_cmd->bt4_corun_lut40, antenna_coupling_ranges[lut].lut20, + sizeof(bt_cmd->bt4_corun_lut40)); + + return 0; +} |