linux/drivers/net/wireless/iwlwifi/mvm/coex.c
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   1/******************************************************************************
   2 *
   3 * This file is provided under a dual BSD/GPLv2 license.  When using or
   4 * redistributing this file, you may do so under either license.
   5 *
   6 * GPL LICENSE SUMMARY
   7 *
   8 * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved.
   9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10 *
  11 * This program is free software; you can redistribute it and/or modify
  12 * it under the terms of version 2 of the GNU General Public License as
  13 * published by the Free Software Foundation.
  14 *
  15 * This program is distributed in the hope that it will be useful, but
  16 * WITHOUT ANY WARRANTY; without even the implied warranty of
  17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18 * General Public License for more details.
  19 *
  20 * You should have received a copy of the GNU General Public License
  21 * along with this program; if not, write to the Free Software
  22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  23 * USA
  24 *
  25 * The full GNU General Public License is included in this distribution
  26 * in the file called COPYING.
  27 *
  28 * Contact Information:
  29 *  Intel Linux Wireless <ilw@linux.intel.com>
  30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  31 *
  32 * BSD LICENSE
  33 *
  34 * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved.
  35 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  36 * All rights reserved.
  37 *
  38 * Redistribution and use in source and binary forms, with or without
  39 * modification, are permitted provided that the following conditions
  40 * are met:
  41 *
  42 *  * Redistributions of source code must retain the above copyright
  43 *    notice, this list of conditions and the following disclaimer.
  44 *  * Redistributions in binary form must reproduce the above copyright
  45 *    notice, this list of conditions and the following disclaimer in
  46 *    the documentation and/or other materials provided with the
  47 *    distribution.
  48 *  * Neither the name Intel Corporation nor the names of its
  49 *    contributors may be used to endorse or promote products derived
  50 *    from this software without specific prior written permission.
  51 *
  52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  63 *
  64 *****************************************************************************/
  65
  66#include <linux/ieee80211.h>
  67#include <linux/etherdevice.h>
  68#include <net/mac80211.h>
  69
  70#include "fw-api-coex.h"
  71#include "iwl-modparams.h"
  72#include "mvm.h"
  73#include "iwl-debug.h"
  74
  75/* 20MHz / 40MHz below / 40Mhz above*/
  76static const __le64 iwl_ci_mask[][3] = {
  77        /* dummy entry for channel 0 */
  78        {cpu_to_le64(0), cpu_to_le64(0), cpu_to_le64(0)},
  79        {
  80                cpu_to_le64(0x0000001FFFULL),
  81                cpu_to_le64(0x0ULL),
  82                cpu_to_le64(0x00007FFFFFULL),
  83        },
  84        {
  85                cpu_to_le64(0x000000FFFFULL),
  86                cpu_to_le64(0x0ULL),
  87                cpu_to_le64(0x0003FFFFFFULL),
  88        },
  89        {
  90                cpu_to_le64(0x000003FFFCULL),
  91                cpu_to_le64(0x0ULL),
  92                cpu_to_le64(0x000FFFFFFCULL),
  93        },
  94        {
  95                cpu_to_le64(0x00001FFFE0ULL),
  96                cpu_to_le64(0x0ULL),
  97                cpu_to_le64(0x007FFFFFE0ULL),
  98        },
  99        {
 100                cpu_to_le64(0x00007FFF80ULL),
 101                cpu_to_le64(0x00007FFFFFULL),
 102                cpu_to_le64(0x01FFFFFF80ULL),
 103        },
 104        {
 105                cpu_to_le64(0x0003FFFC00ULL),
 106                cpu_to_le64(0x0003FFFFFFULL),
 107                cpu_to_le64(0x0FFFFFFC00ULL),
 108        },
 109        {
 110                cpu_to_le64(0x000FFFF000ULL),
 111                cpu_to_le64(0x000FFFFFFCULL),
 112                cpu_to_le64(0x3FFFFFF000ULL),
 113        },
 114        {
 115                cpu_to_le64(0x007FFF8000ULL),
 116                cpu_to_le64(0x007FFFFFE0ULL),
 117                cpu_to_le64(0xFFFFFF8000ULL),
 118        },
 119        {
 120                cpu_to_le64(0x01FFFE0000ULL),
 121                cpu_to_le64(0x01FFFFFF80ULL),
 122                cpu_to_le64(0xFFFFFE0000ULL),
 123        },
 124        {
 125                cpu_to_le64(0x0FFFF00000ULL),
 126                cpu_to_le64(0x0FFFFFFC00ULL),
 127                cpu_to_le64(0x0ULL),
 128        },
 129        {
 130                cpu_to_le64(0x3FFFC00000ULL),
 131                cpu_to_le64(0x3FFFFFF000ULL),
 132                cpu_to_le64(0x0)
 133        },
 134        {
 135                cpu_to_le64(0xFFFE000000ULL),
 136                cpu_to_le64(0xFFFFFF8000ULL),
 137                cpu_to_le64(0x0)
 138        },
 139        {
 140                cpu_to_le64(0xFFF8000000ULL),
 141                cpu_to_le64(0xFFFFFE0000ULL),
 142                cpu_to_le64(0x0)
 143        },
 144        {
 145                cpu_to_le64(0xFFC0000000ULL),
 146                cpu_to_le64(0x0ULL),
 147                cpu_to_le64(0x0ULL)
 148        },
 149};
 150
 151struct corunning_block_luts {
 152        u8 range;
 153        __le32 lut20[BT_COEX_CORUN_LUT_SIZE];
 154};
 155
 156/*
 157 * Ranges for the antenna coupling calibration / co-running block LUT:
 158 *              LUT0: [ 0, 12[
 159 *              LUT1: [12, 20[
 160 *              LUT2: [20, 21[
 161 *              LUT3: [21, 23[
 162 *              LUT4: [23, 27[
 163 *              LUT5: [27, 30[
 164 *              LUT6: [30, 32[
 165 *              LUT7: [32, 33[
 166 *              LUT8: [33, - [
 167 */
 168static const struct corunning_block_luts antenna_coupling_ranges[] = {
 169        {
 170                .range = 0,
 171                .lut20 = {
 172                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 173                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 174                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 175                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 176                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 177                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 178                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 179                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 180                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 181                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 182                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 183                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 184                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 185                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 186                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 187                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 188                },
 189        },
 190        {
 191                .range = 12,
 192                .lut20 = {
 193                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 194                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 195                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 196                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 197                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 198                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 199                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 200                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 201                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 202                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 203                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 204                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 205                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 206                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 207                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 208                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 209                },
 210        },
 211        {
 212                .range = 20,
 213                .lut20 = {
 214                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 215                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 216                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 217                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 218                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 219                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 220                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 221                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 222                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 223                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 224                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 225                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 226                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 227                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 228                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 229                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 230                },
 231        },
 232        {
 233                .range = 21,
 234                .lut20 = {
 235                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 236                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 237                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 238                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 239                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 240                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 241                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 242                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 243                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 244                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 245                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 246                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 247                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 248                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 249                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 250                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 251                },
 252        },
 253        {
 254                .range = 23,
 255                .lut20 = {
 256                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 257                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 258                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 259                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 260                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 261                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 262                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 263                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 264                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 265                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 266                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 267                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 268                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 269                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 270                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 271                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 272                },
 273        },
 274        {
 275                .range = 27,
 276                .lut20 = {
 277                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 278                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 279                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 280                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 281                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 282                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 283                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 284                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 285                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 286                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 287                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 288                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 289                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 290                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 291                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 292                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 293                },
 294        },
 295        {
 296                .range = 30,
 297                .lut20 = {
 298                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 299                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 300                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 301                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 302                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 303                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 304                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 305                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 306                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 307                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 308                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 309                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 310                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 311                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 312                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 313                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 314                },
 315        },
 316        {
 317                .range = 32,
 318                .lut20 = {
 319                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 320                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 321                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 322                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 323                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 324                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 325                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 326                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 327                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 328                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 329                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 330                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 331                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 332                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 333                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 334                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 335                },
 336        },
 337        {
 338                .range = 33,
 339                .lut20 = {
 340                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 341                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 342                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 343                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 344                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 345                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 346                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 347                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 348                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 349                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 350                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 351                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 352                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 353                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 354                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 355                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 356                },
 357        },
 358};
 359
 360static enum iwl_bt_coex_lut_type
 361iwl_get_coex_type(struct iwl_mvm *mvm, const struct ieee80211_vif *vif)
 362{
 363        struct ieee80211_chanctx_conf *chanctx_conf;
 364        enum iwl_bt_coex_lut_type ret;
 365        u16 phy_ctx_id;
 366        u32 primary_ch_phy_id, secondary_ch_phy_id;
 367
 368        /*
 369         * Checking that we hold mvm->mutex is a good idea, but the rate
 370         * control can't acquire the mutex since it runs in Tx path.
 371         * So this is racy in that case, but in the worst case, the AMPDU
 372         * size limit will be wrong for a short time which is not a big
 373         * issue.
 374         */
 375
 376        rcu_read_lock();
 377
 378        chanctx_conf = rcu_dereference(vif->chanctx_conf);
 379
 380        if (!chanctx_conf ||
 381             chanctx_conf->def.chan->band != IEEE80211_BAND_2GHZ) {
 382                rcu_read_unlock();
 383                return BT_COEX_INVALID_LUT;
 384        }
 385
 386        ret = BT_COEX_TX_DIS_LUT;
 387
 388        if (mvm->cfg->bt_shared_single_ant) {
 389                rcu_read_unlock();
 390                return ret;
 391        }
 392
 393        phy_ctx_id = *((u16 *)chanctx_conf->drv_priv);
 394        primary_ch_phy_id = le32_to_cpu(mvm->last_bt_ci_cmd.primary_ch_phy_id);
 395        secondary_ch_phy_id =
 396                le32_to_cpu(mvm->last_bt_ci_cmd.secondary_ch_phy_id);
 397
 398        if (primary_ch_phy_id == phy_ctx_id)
 399                ret = le32_to_cpu(mvm->last_bt_notif.primary_ch_lut);
 400        else if (secondary_ch_phy_id == phy_ctx_id)
 401                ret = le32_to_cpu(mvm->last_bt_notif.secondary_ch_lut);
 402        /* else - default = TX TX disallowed */
 403
 404        rcu_read_unlock();
 405
 406        return ret;
 407}
 408
 409int iwl_send_bt_init_conf(struct iwl_mvm *mvm)
 410{
 411        struct iwl_bt_coex_cmd bt_cmd = {};
 412        u32 mode;
 413
 414        if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 415                return iwl_send_bt_init_conf_old(mvm);
 416
 417        lockdep_assert_held(&mvm->mutex);
 418
 419        if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) {
 420                switch (mvm->bt_force_ant_mode) {
 421                case BT_FORCE_ANT_BT:
 422                        mode = BT_COEX_BT;
 423                        break;
 424                case BT_FORCE_ANT_WIFI:
 425                        mode = BT_COEX_WIFI;
 426                        break;
 427                default:
 428                        WARN_ON(1);
 429                        mode = 0;
 430                }
 431
 432                bt_cmd.mode = cpu_to_le32(mode);
 433                goto send_cmd;
 434        }
 435
 436        mode = iwlwifi_mod_params.bt_coex_active ? BT_COEX_NW : BT_COEX_DISABLE;
 437        bt_cmd.mode = cpu_to_le32(mode);
 438
 439        if (IWL_MVM_BT_COEX_SYNC2SCO)
 440                bt_cmd.enabled_modules |=
 441                        cpu_to_le32(BT_COEX_SYNC2SCO_ENABLED);
 442
 443        if (iwl_mvm_bt_is_plcr_supported(mvm))
 444                bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_CORUN_ENABLED);
 445
 446        if (IWL_MVM_BT_COEX_MPLUT) {
 447                bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_MPLUT_ENABLED);
 448                bt_cmd.enabled_modules |=
 449                        cpu_to_le32(BT_COEX_MPLUT_BOOST_ENABLED);
 450        }
 451
 452        bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_HIGH_BAND_RET);
 453
 454send_cmd:
 455        memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 456        memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
 457
 458        return iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, 0, sizeof(bt_cmd), &bt_cmd);
 459}
 460
 461static int iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm *mvm, u8 sta_id,
 462                                       bool enable)
 463{
 464        struct iwl_bt_coex_reduced_txp_update_cmd cmd = {};
 465        struct iwl_mvm_sta *mvmsta;
 466        u32 value;
 467        int ret;
 468
 469        mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
 470        if (!mvmsta)
 471                return 0;
 472
 473        /* nothing to do */
 474        if (mvmsta->bt_reduced_txpower == enable)
 475                return 0;
 476
 477        value = mvmsta->sta_id;
 478
 479        if (enable)
 480                value |= BT_REDUCED_TX_POWER_BIT;
 481
 482        IWL_DEBUG_COEX(mvm, "%sable reduced Tx Power for sta %d\n",
 483                       enable ? "en" : "dis", sta_id);
 484
 485        cmd.reduced_txp = cpu_to_le32(value);
 486        mvmsta->bt_reduced_txpower = enable;
 487
 488        ret = iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_REDUCED_TXP, CMD_ASYNC,
 489                                   sizeof(cmd), &cmd);
 490
 491        return ret;
 492}
 493
 494struct iwl_bt_iterator_data {
 495        struct iwl_bt_coex_profile_notif *notif;
 496        struct iwl_mvm *mvm;
 497        struct ieee80211_chanctx_conf *primary;
 498        struct ieee80211_chanctx_conf *secondary;
 499        bool primary_ll;
 500};
 501
 502static inline
 503void iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm *mvm,
 504                                       struct ieee80211_vif *vif,
 505                                       bool enable, int rssi)
 506{
 507        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 508
 509        mvmvif->bf_data.last_bt_coex_event = rssi;
 510        mvmvif->bf_data.bt_coex_max_thold =
 511                enable ? -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH : 0;
 512        mvmvif->bf_data.bt_coex_min_thold =
 513                enable ? -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH : 0;
 514}
 515
 516/* must be called under rcu_read_lock */
 517static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac,
 518                                      struct ieee80211_vif *vif)
 519{
 520        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 521        struct iwl_bt_iterator_data *data = _data;
 522        struct iwl_mvm *mvm = data->mvm;
 523        struct ieee80211_chanctx_conf *chanctx_conf;
 524        /* default smps_mode is AUTOMATIC - only used for client modes */
 525        enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC;
 526        u32 bt_activity_grading;
 527        int ave_rssi;
 528
 529        lockdep_assert_held(&mvm->mutex);
 530
 531        switch (vif->type) {
 532        case NL80211_IFTYPE_STATION:
 533                break;
 534        case NL80211_IFTYPE_AP:
 535                if (!mvmvif->ap_ibss_active)
 536                        return;
 537                break;
 538        default:
 539                return;
 540        }
 541
 542        chanctx_conf = rcu_dereference(vif->chanctx_conf);
 543
 544        /* If channel context is invalid or not on 2.4GHz .. */
 545        if ((!chanctx_conf ||
 546             chanctx_conf->def.chan->band != IEEE80211_BAND_2GHZ)) {
 547                if (vif->type == NL80211_IFTYPE_STATION) {
 548                        /* ... relax constraints and disable rssi events */
 549                        iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
 550                                            smps_mode);
 551                        iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id,
 552                                                    false);
 553                        iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
 554                }
 555                return;
 556        }
 557
 558        bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading);
 559        if (bt_activity_grading >= BT_HIGH_TRAFFIC)
 560                smps_mode = IEEE80211_SMPS_STATIC;
 561        else if (bt_activity_grading >= BT_LOW_TRAFFIC)
 562                smps_mode = IEEE80211_SMPS_DYNAMIC;
 563
 564        /* relax SMPS constraints for next association */
 565        if (!vif->bss_conf.assoc)
 566                smps_mode = IEEE80211_SMPS_AUTOMATIC;
 567
 568        if (mvmvif->phy_ctxt &&
 569            IWL_COEX_IS_RRC_ON(mvm->last_bt_notif.ttc_rrc_status,
 570                               mvmvif->phy_ctxt->id))
 571                smps_mode = IEEE80211_SMPS_AUTOMATIC;
 572
 573        IWL_DEBUG_COEX(data->mvm,
 574                       "mac %d: bt_activity_grading %d smps_req %d\n",
 575                       mvmvif->id, bt_activity_grading, smps_mode);
 576
 577        if (vif->type == NL80211_IFTYPE_STATION)
 578                iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
 579                                    smps_mode);
 580
 581        /* low latency is always primary */
 582        if (iwl_mvm_vif_low_latency(mvmvif)) {
 583                data->primary_ll = true;
 584
 585                data->secondary = data->primary;
 586                data->primary = chanctx_conf;
 587        }
 588
 589        if (vif->type == NL80211_IFTYPE_AP) {
 590                if (!mvmvif->ap_ibss_active)
 591                        return;
 592
 593                if (chanctx_conf == data->primary)
 594                        return;
 595
 596                if (!data->primary_ll) {
 597                        /*
 598                         * downgrade the current primary no matter what its
 599                         * type is.
 600                         */
 601                        data->secondary = data->primary;
 602                        data->primary = chanctx_conf;
 603                } else {
 604                        /* there is low latency vif - we will be secondary */
 605                        data->secondary = chanctx_conf;
 606                }
 607                return;
 608        }
 609
 610        /*
 611         * STA / P2P Client, try to be primary if first vif. If we are in low
 612         * latency mode, we are already in primary and just don't do much
 613         */
 614        if (!data->primary || data->primary == chanctx_conf)
 615                data->primary = chanctx_conf;
 616        else if (!data->secondary)
 617                /* if secondary is not NULL, it might be a GO */
 618                data->secondary = chanctx_conf;
 619
 620        /*
 621         * don't reduce the Tx power if one of these is true:
 622         *  we are in LOOSE
 623         *  single share antenna product
 624         *  BT is active
 625         *  we are associated
 626         */
 627        if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT ||
 628            mvm->cfg->bt_shared_single_ant || !vif->bss_conf.assoc ||
 629            le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) {
 630                iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false);
 631                iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
 632                return;
 633        }
 634
 635        /* try to get the avg rssi from fw */
 636        ave_rssi = mvmvif->bf_data.ave_beacon_signal;
 637
 638        /* if the RSSI isn't valid, fake it is very low */
 639        if (!ave_rssi)
 640                ave_rssi = -100;
 641        if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) {
 642                if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true))
 643                        IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
 644        } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) {
 645                if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false))
 646                        IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
 647        }
 648
 649        /* Begin to monitor the RSSI: it may influence the reduced Tx power */
 650        iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi);
 651}
 652
 653static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm)
 654{
 655        struct iwl_bt_iterator_data data = {
 656                .mvm = mvm,
 657                .notif = &mvm->last_bt_notif,
 658        };
 659        struct iwl_bt_coex_ci_cmd cmd = {};
 660        u8 ci_bw_idx;
 661
 662        /* Ignore updates if we are in force mode */
 663        if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
 664                return;
 665
 666        rcu_read_lock();
 667        ieee80211_iterate_active_interfaces_atomic(
 668                                        mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 669                                        iwl_mvm_bt_notif_iterator, &data);
 670
 671        if (data.primary) {
 672                struct ieee80211_chanctx_conf *chan = data.primary;
 673                if (WARN_ON(!chan->def.chan)) {
 674                        rcu_read_unlock();
 675                        return;
 676                }
 677
 678                if (chan->def.width < NL80211_CHAN_WIDTH_40) {
 679                        ci_bw_idx = 0;
 680                } else {
 681                        if (chan->def.center_freq1 >
 682                            chan->def.chan->center_freq)
 683                                ci_bw_idx = 2;
 684                        else
 685                                ci_bw_idx = 1;
 686                }
 687
 688                cmd.bt_primary_ci =
 689                        iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
 690                cmd.primary_ch_phy_id =
 691                        cpu_to_le32(*((u16 *)data.primary->drv_priv));
 692        }
 693
 694        if (data.secondary) {
 695                struct ieee80211_chanctx_conf *chan = data.secondary;
 696                if (WARN_ON(!data.secondary->def.chan)) {
 697                        rcu_read_unlock();
 698                        return;
 699                }
 700
 701                if (chan->def.width < NL80211_CHAN_WIDTH_40) {
 702                        ci_bw_idx = 0;
 703                } else {
 704                        if (chan->def.center_freq1 >
 705                            chan->def.chan->center_freq)
 706                                ci_bw_idx = 2;
 707                        else
 708                                ci_bw_idx = 1;
 709                }
 710
 711                cmd.bt_secondary_ci =
 712                        iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
 713                cmd.secondary_ch_phy_id =
 714                        cpu_to_le32(*((u16 *)data.secondary->drv_priv));
 715        }
 716
 717        rcu_read_unlock();
 718
 719        /* Don't spam the fw with the same command over and over */
 720        if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) {
 721                if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0,
 722                                         sizeof(cmd), &cmd))
 723                        IWL_ERR(mvm, "Failed to send BT_CI cmd\n");
 724                memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd));
 725        }
 726}
 727
 728int iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm,
 729                             struct iwl_rx_cmd_buffer *rxb,
 730                             struct iwl_device_cmd *dev_cmd)
 731{
 732        struct iwl_rx_packet *pkt = rxb_addr(rxb);
 733        struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data;
 734
 735        if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 736                return iwl_mvm_rx_bt_coex_notif_old(mvm, rxb, dev_cmd);
 737
 738        IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n");
 739        IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance);
 740        IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n",
 741                       le32_to_cpu(notif->primary_ch_lut));
 742        IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n",
 743                       le32_to_cpu(notif->secondary_ch_lut));
 744        IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n",
 745                       le32_to_cpu(notif->bt_activity_grading));
 746
 747        /* remember this notification for future use: rssi fluctuations */
 748        memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif));
 749
 750        iwl_mvm_bt_coex_notif_handle(mvm);
 751
 752        /*
 753         * This is an async handler for a notification, returning anything other
 754         * than 0 doesn't make sense even if HCMD failed.
 755         */
 756        return 0;
 757}
 758
 759void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 760                           enum ieee80211_rssi_event_data rssi_event)
 761{
 762        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 763        int ret;
 764
 765        if (!fw_has_api(&mvm->fw->ucode_capa,
 766                        IWL_UCODE_TLV_API_BT_COEX_SPLIT)) {
 767                iwl_mvm_bt_rssi_event_old(mvm, vif, rssi_event);
 768                return;
 769        }
 770
 771        lockdep_assert_held(&mvm->mutex);
 772
 773        /* Ignore updates if we are in force mode */
 774        if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
 775                return;
 776
 777        /*
 778         * Rssi update while not associated - can happen since the statistics
 779         * are handled asynchronously
 780         */
 781        if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)
 782                return;
 783
 784        /* No BT - reports should be disabled */
 785        if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF)
 786                return;
 787
 788        IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid,
 789                       rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW");
 790
 791        /*
 792         * Check if rssi is good enough for reduced Tx power, but not in loose
 793         * scheme.
 794         */
 795        if (rssi_event == RSSI_EVENT_LOW || mvm->cfg->bt_shared_single_ant ||
 796            iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT)
 797                ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id,
 798                                                  false);
 799        else
 800                ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true);
 801
 802        if (ret)
 803                IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n");
 804}
 805
 806#define LINK_QUAL_AGG_TIME_LIMIT_DEF    (4000)
 807#define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200)
 808
 809u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm,
 810                                struct ieee80211_sta *sta)
 811{
 812        struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 813        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
 814        struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->phy_ctxt;
 815        enum iwl_bt_coex_lut_type lut_type;
 816
 817        if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 818                return iwl_mvm_coex_agg_time_limit_old(mvm, sta);
 819
 820        if (IWL_COEX_IS_TTC_ON(mvm->last_bt_notif.ttc_rrc_status, phy_ctxt->id))
 821                return LINK_QUAL_AGG_TIME_LIMIT_DEF;
 822
 823        if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
 824            BT_HIGH_TRAFFIC)
 825                return LINK_QUAL_AGG_TIME_LIMIT_DEF;
 826
 827        lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
 828
 829        if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT)
 830                return LINK_QUAL_AGG_TIME_LIMIT_DEF;
 831
 832        /* tight coex, high bt traffic, reduce AGG time limit */
 833        return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT;
 834}
 835
 836bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm,
 837                                     struct ieee80211_sta *sta)
 838{
 839        struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 840        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
 841        struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->phy_ctxt;
 842        enum iwl_bt_coex_lut_type lut_type;
 843
 844        if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 845                return iwl_mvm_bt_coex_is_mimo_allowed_old(mvm, sta);
 846
 847        if (IWL_COEX_IS_TTC_ON(mvm->last_bt_notif.ttc_rrc_status, phy_ctxt->id))
 848                return true;
 849
 850        if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
 851            BT_HIGH_TRAFFIC)
 852                return true;
 853
 854        /*
 855         * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas
 856         * since BT is already killed.
 857         * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while
 858         * we Tx.
 859         * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO.
 860         */
 861        lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
 862        return lut_type != BT_COEX_LOOSE_LUT;
 863}
 864
 865bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant)
 866{
 867        /* there is no other antenna, shared antenna is always available */
 868        if (mvm->cfg->bt_shared_single_ant)
 869                return true;
 870
 871        if (ant & mvm->cfg->non_shared_ant)
 872                return true;
 873
 874        if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 875                return iwl_mvm_bt_coex_is_shared_ant_avail_old(mvm);
 876
 877        return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
 878                BT_HIGH_TRAFFIC;
 879}
 880
 881bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm)
 882{
 883        /* there is no other antenna, shared antenna is always available */
 884        if (mvm->cfg->bt_shared_single_ant)
 885                return true;
 886
 887        if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 888                return iwl_mvm_bt_coex_is_shared_ant_avail_old(mvm);
 889
 890        return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC;
 891}
 892
 893bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm,
 894                                    enum ieee80211_band band)
 895{
 896        u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading);
 897
 898        if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 899                return iwl_mvm_bt_coex_is_tpc_allowed_old(mvm, band);
 900
 901        if (band != IEEE80211_BAND_2GHZ)
 902                return false;
 903
 904        return bt_activity >= BT_LOW_TRAFFIC;
 905}
 906
 907u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
 908                           struct ieee80211_tx_info *info, u8 ac)
 909{
 910        __le16 fc = hdr->frame_control;
 911
 912        if (info->band != IEEE80211_BAND_2GHZ)
 913                return 0;
 914
 915        if (unlikely(mvm->bt_tx_prio))
 916                return mvm->bt_tx_prio - 1;
 917
 918        /* High prio packet (wrt. BT coex) if it is EAPOL, MCAST or MGMT */
 919        if (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO ||
 920             is_multicast_ether_addr(hdr->addr1) ||
 921             ieee80211_is_ctl(fc) || ieee80211_is_mgmt(fc) ||
 922             ieee80211_is_nullfunc(fc) || ieee80211_is_qos_nullfunc(fc))
 923                return 3;
 924
 925        switch (ac) {
 926        case IEEE80211_AC_BE:
 927                return 1;
 928        case IEEE80211_AC_VO:
 929                return 3;
 930        case IEEE80211_AC_VI:
 931                return 2;
 932        default:
 933                break;
 934        }
 935
 936        return 0;
 937}
 938
 939void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm)
 940{
 941        if (!fw_has_api(&mvm->fw->ucode_capa,
 942                        IWL_UCODE_TLV_API_BT_COEX_SPLIT)) {
 943                iwl_mvm_bt_coex_vif_change_old(mvm);
 944                return;
 945        }
 946
 947        iwl_mvm_bt_coex_notif_handle(mvm);
 948}
 949
 950int iwl_mvm_rx_ant_coupling_notif(struct iwl_mvm *mvm,
 951                                  struct iwl_rx_cmd_buffer *rxb,
 952                                  struct iwl_device_cmd *dev_cmd)
 953{
 954        struct iwl_rx_packet *pkt = rxb_addr(rxb);
 955        u32 ant_isolation = le32_to_cpup((void *)pkt->data);
 956        struct iwl_bt_coex_corun_lut_update_cmd cmd = {};
 957        u8 __maybe_unused lower_bound, upper_bound;
 958        u8 lut;
 959
 960        if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 961                return iwl_mvm_rx_ant_coupling_notif_old(mvm, rxb, dev_cmd);
 962
 963        if (!iwl_mvm_bt_is_plcr_supported(mvm))
 964                return 0;
 965
 966        lockdep_assert_held(&mvm->mutex);
 967
 968        /* Ignore updates if we are in force mode */
 969        if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
 970                return 0;
 971
 972        if (ant_isolation ==  mvm->last_ant_isol)
 973                return 0;
 974
 975        for (lut = 0; lut < ARRAY_SIZE(antenna_coupling_ranges) - 1; lut++)
 976                if (ant_isolation < antenna_coupling_ranges[lut + 1].range)
 977                        break;
 978
 979        lower_bound = antenna_coupling_ranges[lut].range;
 980
 981        if (lut < ARRAY_SIZE(antenna_coupling_ranges) - 1)
 982                upper_bound = antenna_coupling_ranges[lut + 1].range;
 983        else
 984                upper_bound = antenna_coupling_ranges[lut].range;
 985
 986        IWL_DEBUG_COEX(mvm, "Antenna isolation=%d in range [%d,%d[, lut=%d\n",
 987                       ant_isolation, lower_bound, upper_bound, lut);
 988
 989        mvm->last_ant_isol = ant_isolation;
 990
 991        if (mvm->last_corun_lut == lut)
 992                return 0;
 993
 994        mvm->last_corun_lut = lut;
 995
 996        /* For the moment, use the same LUT for 20GHz and 40GHz */
 997        memcpy(&cmd.corun_lut20, antenna_coupling_ranges[lut].lut20,
 998               sizeof(cmd.corun_lut20));
 999
1000        memcpy(&cmd.corun_lut40, antenna_coupling_ranges[lut].lut20,

1001               sizeof(cmd.corun_lut40));
1002
1003        return iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_CORUN_LUT, 0,
1004                                    sizeof(cmd), &cmd);
1005}
1006
Hosted by Missing Link Electronics. The original LXR software by the LXR community, this experimental version by lxr@linux.no.