kernel/drivers/net/wireless/iwlwifi/mvm/coex.c

   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 - 2014 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  *
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  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 - 2014 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*/
  76 static 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
 151 struct 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  */
 168 static 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
 360 static enum iwl_bt_coex_lut_type
 361 iwl_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
 409 int iwl_send_bt_init_conf(struct iwl_mvm *mvm)
 410 {
 411         struct iwl_bt_coex_cmd *bt_cmd;
 412         struct iwl_host_cmd cmd = {
 413                 .id = BT_CONFIG,
 414                 .len = { sizeof(*bt_cmd), },
 415                 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
 416         };
 417         int ret;
 418         u32 mode;
 419
 420         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 421                 return iwl_send_bt_init_conf_old(mvm);
 422
 423         bt_cmd = kzalloc(sizeof(*bt_cmd), GFP_KERNEL);
 424         if (!bt_cmd)
 425                 return -ENOMEM;
 426         cmd.data[0] = bt_cmd;
 427
 428         lockdep_assert_held(&mvm->mutex);
 429
 430         if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) {
 431                 switch (mvm->bt_force_ant_mode) {
 432                 case BT_FORCE_ANT_BT:
 433                         mode = BT_COEX_BT;
 434                         break;
 435                 case BT_FORCE_ANT_WIFI:
 436                         mode = BT_COEX_WIFI;
 437                         break;
 438                 default:
 439                         WARN_ON(1);
 440                         mode = 0;
 441                 }
 442
 443                 bt_cmd->mode = cpu_to_le32(mode);
 444                 goto send_cmd;
 445         }
 446
 447         mode = iwlwifi_mod_params.bt_coex_active ? BT_COEX_NW : BT_COEX_DISABLE;
 448         bt_cmd->mode = cpu_to_le32(mode);
 449
 450         if (IWL_MVM_BT_COEX_SYNC2SCO)
 451                 bt_cmd->enabled_modules |=
 452                         cpu_to_le32(BT_COEX_SYNC2SCO_ENABLED);
 453
 454         if (iwl_mvm_bt_is_plcr_supported(mvm))
 455                 bt_cmd->enabled_modules |= cpu_to_le32(BT_COEX_CORUN_ENABLED);
 456
 457         if (IWL_MVM_BT_COEX_MPLUT) {
 458                 bt_cmd->enabled_modules |= cpu_to_le32(BT_COEX_MPLUT_ENABLED);
 459                 bt_cmd->enabled_modules |=
 460                         cpu_to_le32(BT_COEX_MPLUT_BOOST_ENABLED);
 461         }
 462
 463         bt_cmd->enabled_modules |= cpu_to_le32(BT_COEX_HIGH_BAND_RET);
 464
 465 send_cmd:
 466         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 467         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
 468
 469         ret = iwl_mvm_send_cmd(mvm, &cmd);
 470
 471         kfree(bt_cmd);
 472         return ret;
 473 }
 474
 475 static int iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm *mvm, u8 sta_id,
 476                                        bool enable)
 477 {
 478         struct iwl_bt_coex_reduced_txp_update_cmd cmd = {};
 479         struct iwl_mvm_sta *mvmsta;
 480         u32 value;
 481         int ret;
 482
 483         mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
 484         if (!mvmsta)
 485                 return 0;
 486
 487         /* nothing to do */
 488         if (mvmsta->bt_reduced_txpower == enable)
 489                 return 0;
 490
 491         value = mvmsta->sta_id;
 492
 493         if (enable)
 494                 value |= BT_REDUCED_TX_POWER_BIT;
 495
 496         IWL_DEBUG_COEX(mvm, "%sable reduced Tx Power for sta %d\n",
 497                        enable ? "en" : "dis", sta_id);
 498
 499         cmd.reduced_txp = cpu_to_le32(value);
 500         mvmsta->bt_reduced_txpower = enable;
 501
 502         ret = iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_REDUCED_TXP, CMD_ASYNC,
 503                                    sizeof(cmd), &cmd);
 504
 505         return ret;
 506 }
 507
 508 struct iwl_bt_iterator_data {
 509         struct iwl_bt_coex_profile_notif *notif;
 510         struct iwl_mvm *mvm;
 511         struct ieee80211_chanctx_conf *primary;
 512         struct ieee80211_chanctx_conf *secondary;
 513         bool primary_ll;
 514 };
 515
 516 static inline
 517 void iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm *mvm,
 518                                        struct ieee80211_vif *vif,
 519                                        bool enable, int rssi)
 520 {
 521         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 522
 523         mvmvif->bf_data.last_bt_coex_event = rssi;
 524         mvmvif->bf_data.bt_coex_max_thold =
 525                 enable ? -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH : 0;
 526         mvmvif->bf_data.bt_coex_min_thold =
 527                 enable ? -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH : 0;
 528 }
 529
 530 /* must be called under rcu_read_lock */
 531 static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac,
 532                                       struct ieee80211_vif *vif)
 533 {
 534         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 535         struct iwl_bt_iterator_data *data = _data;
 536         struct iwl_mvm *mvm = data->mvm;
 537         struct ieee80211_chanctx_conf *chanctx_conf;
 538         /* default smps_mode is AUTOMATIC - only used for client modes */
 539         enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC;
 540         u32 bt_activity_grading;
 541         int ave_rssi;
 542
 543         lockdep_assert_held(&mvm->mutex);
 544
 545         switch (vif->type) {
 546         case NL80211_IFTYPE_STATION:
 547                 break;
 548         case NL80211_IFTYPE_AP:
 549                 if (!mvmvif->ap_ibss_active)
 550                         return;
 551                 break;
 552         default:
 553                 return;
 554         }
 555
 556         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 557
 558         /* If channel context is invalid or not on 2.4GHz .. */
 559         if ((!chanctx_conf ||
 560              chanctx_conf->def.chan->band != IEEE80211_BAND_2GHZ)) {
 561                 if (vif->type == NL80211_IFTYPE_STATION) {
 562                         /* ... relax constraints and disable rssi events */
 563                         iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
 564                                             smps_mode);
 565                         iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id,
 566                                                     false);
 567                         iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
 568                 }
 569                 return;
 570         }
 571
 572         bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading);
 573         if (bt_activity_grading >= BT_HIGH_TRAFFIC)
 574                 smps_mode = IEEE80211_SMPS_STATIC;
 575         else if (bt_activity_grading >= BT_LOW_TRAFFIC)
 576                 smps_mode = IEEE80211_SMPS_DYNAMIC;
 577
 578         /* relax SMPS constraints for next association */
 579         if (!vif->bss_conf.assoc)
 580                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 581
 582         if (mvmvif->phy_ctxt &&
 583             IWL_COEX_IS_RRC_ON(mvm->last_bt_notif.ttc_rrc_status,
 584                                mvmvif->phy_ctxt->id))
 585                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 586
 587         IWL_DEBUG_COEX(data->mvm,
 588                        "mac %d: bt_activity_grading %d smps_req %d\n",
 589                        mvmvif->id, bt_activity_grading, smps_mode);
 590
 591         if (vif->type == NL80211_IFTYPE_STATION)
 592                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
 593                                     smps_mode);
 594
 595         /* low latency is always primary */
 596         if (iwl_mvm_vif_low_latency(mvmvif)) {
 597                 data->primary_ll = true;
 598
 599                 data->secondary = data->primary;
 600                 data->primary = chanctx_conf;
 601         }
 602
 603         if (vif->type == NL80211_IFTYPE_AP) {
 604                 if (!mvmvif->ap_ibss_active)
 605                         return;
 606
 607                 if (chanctx_conf == data->primary)
 608                         return;
 609
 610                 if (!data->primary_ll) {
 611                         /*
 612                          * downgrade the current primary no matter what its
 613                          * type is.
 614                          */
 615                         data->secondary = data->primary;
 616                         data->primary = chanctx_conf;
 617                 } else {
 618                         /* there is low latency vif - we will be secondary */
 619                         data->secondary = chanctx_conf;
 620                 }
 621                 return;
 622         }
 623
 624         /*
 625          * STA / P2P Client, try to be primary if first vif. If we are in low
 626          * latency mode, we are already in primary and just don't do much
 627          */
 628         if (!data->primary || data->primary == chanctx_conf)
 629                 data->primary = chanctx_conf;
 630         else if (!data->secondary)
 631                 /* if secondary is not NULL, it might be a GO */
 632                 data->secondary = chanctx_conf;
 633
 634         /*
 635          * don't reduce the Tx power if one of these is true:
 636          *  we are in LOOSE
 637          *  single share antenna product
 638          *  BT is active
 639          *  we are associated
 640          */
 641         if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT ||
 642             mvm->cfg->bt_shared_single_ant || !vif->bss_conf.assoc ||
 643             le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) {
 644                 iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false);
 645                 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
 646                 return;
 647         }
 648
 649         /* try to get the avg rssi from fw */
 650         ave_rssi = mvmvif->bf_data.ave_beacon_signal;
 651
 652         /* if the RSSI isn't valid, fake it is very low */
 653         if (!ave_rssi)
 654                 ave_rssi = -100;
 655         if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) {
 656                 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true))
 657                         IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
 658         } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) {
 659                 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false))
 660                         IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
 661         }
 662
 663         /* Begin to monitor the RSSI: it may influence the reduced Tx power */
 664         iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi);
 665 }
 666
 667 static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm)
 668 {
 669         struct iwl_bt_iterator_data data = {
 670                 .mvm = mvm,
 671                 .notif = &mvm->last_bt_notif,
 672         };
 673         struct iwl_bt_coex_ci_cmd cmd = {};
 674         u8 ci_bw_idx;
 675
 676         /* Ignore updates if we are in force mode */
 677         if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
 678                 return;
 679
 680         rcu_read_lock();
 681         ieee80211_iterate_active_interfaces_atomic(
 682                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 683                                         iwl_mvm_bt_notif_iterator, &data);
 684
 685         if (data.primary) {
 686                 struct ieee80211_chanctx_conf *chan = data.primary;
 687                 if (WARN_ON(!chan->def.chan)) {
 688                         rcu_read_unlock();
 689                         return;
 690                 }
 691
 692                 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
 693                         ci_bw_idx = 0;
 694                 } else {
 695                         if (chan->def.center_freq1 >
 696                             chan->def.chan->center_freq)
 697                                 ci_bw_idx = 2;
 698                         else
 699                                 ci_bw_idx = 1;
 700                 }
 701
 702                 cmd.bt_primary_ci =
 703                         iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
 704                 cmd.primary_ch_phy_id =
 705                         cpu_to_le32(*((u16 *)data.primary->drv_priv));
 706         }
 707
 708         if (data.secondary) {
 709                 struct ieee80211_chanctx_conf *chan = data.secondary;
 710                 if (WARN_ON(!data.secondary->def.chan)) {
 711                         rcu_read_unlock();
 712                         return;
 713                 }
 714
 715                 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
 716                         ci_bw_idx = 0;
 717                 } else {
 718                         if (chan->def.center_freq1 >
 719                             chan->def.chan->center_freq)
 720                                 ci_bw_idx = 2;
 721                         else
 722                                 ci_bw_idx = 1;
 723                 }
 724
 725                 cmd.bt_secondary_ci =
 726                         iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
 727                 cmd.secondary_ch_phy_id =
 728                         cpu_to_le32(*((u16 *)data.secondary->drv_priv));
 729         }
 730
 731         rcu_read_unlock();
 732
 733         /* Don't spam the fw with the same command over and over */
 734         if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) {
 735                 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0,
 736                                          sizeof(cmd), &cmd))
 737                         IWL_ERR(mvm, "Failed to send BT_CI cmd\n");
 738                 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd));
 739         }
 740 }
 741
 742 int iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm,
 743                              struct iwl_rx_cmd_buffer *rxb,
 744                              struct iwl_device_cmd *dev_cmd)
 745 {
 746         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 747         struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data;
 748
 749         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 750                 return iwl_mvm_rx_bt_coex_notif_old(mvm, rxb, dev_cmd);
 751
 752         IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n");
 753         IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance);
 754         IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n",
 755                        le32_to_cpu(notif->primary_ch_lut));
 756         IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n",
 757                        le32_to_cpu(notif->secondary_ch_lut));
 758         IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n",
 759                        le32_to_cpu(notif->bt_activity_grading));
 760
 761         /* remember this notification for future use: rssi fluctuations */
 762         memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif));
 763
 764         iwl_mvm_bt_coex_notif_handle(mvm);
 765
 766         /*
 767          * This is an async handler for a notification, returning anything other
 768          * than 0 doesn't make sense even if HCMD failed.
 769          */
 770         return 0;
 771 }
 772
 773 static void iwl_mvm_bt_rssi_iterator(void *_data, u8 *mac,
 774                                    struct ieee80211_vif *vif)
 775 {
 776         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 777         struct iwl_bt_iterator_data *data = _data;
 778         struct iwl_mvm *mvm = data->mvm;
 779
 780         struct ieee80211_sta *sta;
 781         struct iwl_mvm_sta *mvmsta;
 782
 783         struct ieee80211_chanctx_conf *chanctx_conf;
 784
 785         rcu_read_lock();
 786         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 787         /* If channel context is invalid or not on 2.4GHz - don't count it */
 788         if (!chanctx_conf ||
 789             chanctx_conf->def.chan->band != IEEE80211_BAND_2GHZ) {
 790                 rcu_read_unlock();
 791                 return;
 792         }
 793         rcu_read_unlock();
 794
 795         if (vif->type != NL80211_IFTYPE_STATION ||
 796             mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)
 797                 return;
 798
 799         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
 800                                         lockdep_is_held(&mvm->mutex));
 801
 802         /* This can happen if the station has been removed right now */
 803         if (IS_ERR_OR_NULL(sta))
 804                 return;
 805
 806         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 807 }
 808
 809 void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 810                            enum ieee80211_rssi_event_data rssi_event)
 811 {
 812         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 813         struct iwl_bt_iterator_data data = {
 814                 .mvm = mvm,
 815         };
 816         int ret;
 817
 818         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT)) {
 819                 iwl_mvm_bt_rssi_event_old(mvm, vif, rssi_event);
 820                 return;
 821         }
 822
 823         lockdep_assert_held(&mvm->mutex);
 824
 825         /* Ignore updates if we are in force mode */
 826         if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
 827                 return;
 828
 829         /*
 830          * Rssi update while not associated - can happen since the statistics
 831          * are handled asynchronously
 832          */
 833         if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)
 834                 return;
 835
 836         /* No BT - reports should be disabled */
 837         if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF)
 838                 return;
 839
 840         IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid,
 841                        rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW");
 842
 843         /*
 844          * Check if rssi is good enough for reduced Tx power, but not in loose
 845          * scheme.
 846          */
 847         if (rssi_event == RSSI_EVENT_LOW || mvm->cfg->bt_shared_single_ant ||
 848             iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT)
 849                 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id,
 850                                                   false);
 851         else
 852                 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true);
 853
 854         if (ret)
 855                 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n");
 856
 857         ieee80211_iterate_active_interfaces_atomic(
 858                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 859                 iwl_mvm_bt_rssi_iterator, &data);
 860 }
 861
 862 #define LINK_QUAL_AGG_TIME_LIMIT_DEF    (4000)
 863 #define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200)
 864
 865 u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm,
 866                                 struct ieee80211_sta *sta)
 867 {
 868         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 869         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
 870         struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->phy_ctxt;
 871         enum iwl_bt_coex_lut_type lut_type;
 872
 873         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 874                 return iwl_mvm_coex_agg_time_limit_old(mvm, sta);
 875
 876         if (IWL_COEX_IS_TTC_ON(mvm->last_bt_notif.ttc_rrc_status, phy_ctxt->id))
 877                 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
 878
 879         if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
 880             BT_HIGH_TRAFFIC)
 881                 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
 882
 883         lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
 884
 885         if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT)
 886                 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
 887
 888         /* tight coex, high bt traffic, reduce AGG time limit */
 889         return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT;
 890 }
 891
 892 bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm,
 893                                      struct ieee80211_sta *sta)
 894 {
 895         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 896         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
 897         struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->phy_ctxt;
 898         enum iwl_bt_coex_lut_type lut_type;
 899
 900         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 901                 return iwl_mvm_bt_coex_is_mimo_allowed_old(mvm, sta);
 902
 903         if (IWL_COEX_IS_TTC_ON(mvm->last_bt_notif.ttc_rrc_status, phy_ctxt->id))
 904                 return true;
 905
 906         if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
 907             BT_HIGH_TRAFFIC)
 908                 return true;
 909
 910         /*
 911          * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas
 912          * since BT is already killed.
 913          * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while
 914          * we Tx.
 915          * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO.
 916          */
 917         lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
 918         return lut_type != BT_COEX_LOOSE_LUT;
 919 }
 920
 921 bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant)
 922 {
 923         /* there is no other antenna, shared antenna is always available */
 924         if (mvm->cfg->bt_shared_single_ant)
 925                 return true;
 926
 927         if (ant & mvm->cfg->non_shared_ant)
 928                 return true;
 929
 930         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 931                 return iwl_mvm_bt_coex_is_shared_ant_avail_old(mvm);
 932
 933         return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
 934                 BT_HIGH_TRAFFIC;
 935 }
 936
 937 bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm)
 938 {
 939         /* there is no other antenna, shared antenna is always available */
 940         if (mvm->cfg->bt_shared_single_ant)
 941                 return true;
 942
 943         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 944                 return iwl_mvm_bt_coex_is_shared_ant_avail_old(mvm);
 945
 946         return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF;
 947 }
 948
 949 bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm,
 950                                     enum ieee80211_band band)
 951 {
 952         u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading);
 953
 954         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 955                 return iwl_mvm_bt_coex_is_tpc_allowed_old(mvm, band);
 956
 957         if (band != IEEE80211_BAND_2GHZ)
 958                 return false;
 959
 960         return bt_activity >= BT_LOW_TRAFFIC;
 961 }
 962
 963 u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
 964                            struct ieee80211_tx_info *info, u8 ac)
 965 {
 966         __le16 fc = hdr->frame_control;
 967
 968         if (info->band != IEEE80211_BAND_2GHZ)
 969                 return 0;
 970
 971         if (unlikely(mvm->bt_tx_prio))
 972                 return mvm->bt_tx_prio - 1;
 973
 974         /* High prio packet (wrt. BT coex) if it is EAPOL, MCAST or MGMT */
 975         if (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO ||
 976              is_multicast_ether_addr(hdr->addr1) ||
 977              ieee80211_is_ctl(fc) || ieee80211_is_mgmt(fc) ||
 978              ieee80211_is_nullfunc(fc) || ieee80211_is_qos_nullfunc(fc))
 979                 return 3;
 980
 981         switch (ac) {
 982         case IEEE80211_AC_BE:
 983                 return 1;
 984         case IEEE80211_AC_VO:
 985                 return 3;
 986         case IEEE80211_AC_VI:
 987                 return 2;
 988         default:
 989                 break;
 990         }
 991
 992         return 0;
 993 }
 994
 995 void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm)
 996 {
 997         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT)) {
 998                 iwl_mvm_bt_coex_vif_change_old(mvm);
 999                 return;
1000         }
1001
1002         iwl_mvm_bt_coex_notif_handle(mvm);
1003 }
1004
1005 int iwl_mvm_rx_ant_coupling_notif(struct iwl_mvm *mvm,
1006                                   struct iwl_rx_cmd_buffer *rxb,
1007                                   struct iwl_device_cmd *dev_cmd)
1008 {
1009         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1010         u32 ant_isolation = le32_to_cpup((void *)pkt->data);
1011         struct iwl_bt_coex_corun_lut_update_cmd cmd = {};
1012         u8 __maybe_unused lower_bound, upper_bound;
1013         u8 lut;
1014
1015         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
1016                 return iwl_mvm_rx_ant_coupling_notif_old(mvm, rxb, dev_cmd);
1017
1018         if (!iwl_mvm_bt_is_plcr_supported(mvm))
1019                 return 0;
1020
1021         lockdep_assert_held(&mvm->mutex);
1022
1023         /* Ignore updates if we are in force mode */
1024         if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
1025                 return 0;
1026
1027         if (ant_isolation ==  mvm->last_ant_isol)
1028                 return 0;
1029
1030         for (lut = 0; lut < ARRAY_SIZE(antenna_coupling_ranges) - 1; lut++)
1031                 if (ant_isolation < antenna_coupling_ranges[lut + 1].range)
1032                         break;
1033
1034         lower_bound = antenna_coupling_ranges[lut].range;
1035
1036         if (lut < ARRAY_SIZE(antenna_coupling_ranges) - 1)
1037                 upper_bound = antenna_coupling_ranges[lut + 1].range;
1038         else
1039                 upper_bound = antenna_coupling_ranges[lut].range;
1040
1041         IWL_DEBUG_COEX(mvm, "Antenna isolation=%d in range [%d,%d[, lut=%d\n",
1042                        ant_isolation, lower_bound, upper_bound, lut);
1043
1044         mvm->last_ant_isol = ant_isolation;
1045
1046         if (mvm->last_corun_lut == lut)
1047                 return 0;
1048
1049         mvm->last_corun_lut = lut;
1050
1051         /* For the moment, use the same LUT for 20GHz and 40GHz */
1052         memcpy(&cmd.corun_lut20, antenna_coupling_ranges[lut].lut20,
1053                sizeof(cmd.corun_lut20));
1054
1055         memcpy(&cmd.corun_lut40, antenna_coupling_ranges[lut].lut20,
1056                sizeof(cmd.corun_lut40));
1057
1058         return iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_CORUN_LUT, 0,
1059                                     sizeof(cmd), &cmd);
1060 }