drivers/net/wireless/intel/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 - 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 <linuxwifi@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*/
  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 != NL80211_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         u32 mode;
 413
 414         lockdep_assert_held(&mvm->mutex);
 415
 416         if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) {
 417                 switch (mvm->bt_force_ant_mode) {
 418                 case BT_FORCE_ANT_BT:
 419                         mode = BT_COEX_BT;
 420                         break;
 421                 case BT_FORCE_ANT_WIFI:
 422                         mode = BT_COEX_WIFI;
 423                         break;
 424                 default:
 425                         WARN_ON(1);
 426                         mode = 0;
 427                 }
 428
 429                 bt_cmd.mode = cpu_to_le32(mode);
 430                 goto send_cmd;
 431         }
 432
 433         mode = iwlwifi_mod_params.bt_coex_active ? BT_COEX_NW : BT_COEX_DISABLE;
 434         bt_cmd.mode = cpu_to_le32(mode);
 435
 436         if (IWL_MVM_BT_COEX_SYNC2SCO)
 437                 bt_cmd.enabled_modules |=
 438                         cpu_to_le32(BT_COEX_SYNC2SCO_ENABLED);
 439
 440         if (iwl_mvm_bt_is_plcr_supported(mvm))
 441                 bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_CORUN_ENABLED);
 442
 443         if (iwl_mvm_is_mplut_supported(mvm))
 444                 bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_MPLUT_ENABLED);
 445
 446         bt_cmd.enabled_modules |= cpu_to_le32(BT_COEX_HIGH_BAND_RET);
 447
 448 send_cmd:
 449         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 450         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
 451
 452         return iwl_mvm_send_cmd_pdu(mvm, BT_CONFIG, 0, sizeof(bt_cmd), &bt_cmd);
 453 }
 454
 455 static int iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm *mvm, u8 sta_id,
 456                                        bool enable)
 457 {
 458         struct iwl_bt_coex_reduced_txp_update_cmd cmd = {};
 459         struct iwl_mvm_sta *mvmsta;
 460         u32 value;
 461         int ret;
 462
 463         mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
 464         if (!mvmsta)
 465                 return 0;
 466
 467         /* nothing to do */
 468         if (mvmsta->bt_reduced_txpower == enable)
 469                 return 0;
 470
 471         value = mvmsta->sta_id;
 472
 473         if (enable)
 474                 value |= BT_REDUCED_TX_POWER_BIT;
 475
 476         IWL_DEBUG_COEX(mvm, "%sable reduced Tx Power for sta %d\n",
 477                        enable ? "en" : "dis", sta_id);
 478
 479         cmd.reduced_txp = cpu_to_le32(value);
 480         mvmsta->bt_reduced_txpower = enable;
 481
 482         ret = iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_REDUCED_TXP, CMD_ASYNC,
 483                                    sizeof(cmd), &cmd);
 484
 485         return ret;
 486 }
 487
 488 struct iwl_bt_iterator_data {
 489         struct iwl_bt_coex_profile_notif *notif;
 490         struct iwl_mvm *mvm;
 491         struct ieee80211_chanctx_conf *primary;
 492         struct ieee80211_chanctx_conf *secondary;
 493         bool primary_ll;
 494 };
 495
 496 static inline
 497 void iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm *mvm,
 498                                        struct ieee80211_vif *vif,
 499                                        bool enable, int rssi)
 500 {
 501         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 502
 503         mvmvif->bf_data.last_bt_coex_event = rssi;
 504         mvmvif->bf_data.bt_coex_max_thold =
 505                 enable ? -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH : 0;
 506         mvmvif->bf_data.bt_coex_min_thold =
 507                 enable ? -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH : 0;
 508 }
 509
 510 /* must be called under rcu_read_lock */
 511 static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac,
 512                                       struct ieee80211_vif *vif)
 513 {
 514         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 515         struct iwl_bt_iterator_data *data = _data;
 516         struct iwl_mvm *mvm = data->mvm;
 517         struct ieee80211_chanctx_conf *chanctx_conf;
 518         /* default smps_mode is AUTOMATIC - only used for client modes */
 519         enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC;
 520         u32 bt_activity_grading;
 521         int ave_rssi;
 522
 523         lockdep_assert_held(&mvm->mutex);
 524
 525         switch (vif->type) {
 526         case NL80211_IFTYPE_STATION:
 527                 break;
 528         case NL80211_IFTYPE_AP:
 529                 if (!mvmvif->ap_ibss_active)
 530                         return;
 531                 break;
 532         default:
 533                 return;
 534         }
 535
 536         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 537
 538         /* If channel context is invalid or not on 2.4GHz .. */
 539         if ((!chanctx_conf ||
 540              chanctx_conf->def.chan->band != NL80211_BAND_2GHZ)) {
 541                 if (vif->type == NL80211_IFTYPE_STATION) {
 542                         /* ... relax constraints and disable rssi events */
 543                         iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
 544                                             smps_mode);
 545                         iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id,
 546                                                     false);
 547                         iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
 548                 }
 549                 return;
 550         }
 551
 552         bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading);
 553         if (bt_activity_grading >= BT_HIGH_TRAFFIC)
 554                 smps_mode = IEEE80211_SMPS_STATIC;
 555         else if (bt_activity_grading >= BT_LOW_TRAFFIC)
 556                 smps_mode = IEEE80211_SMPS_DYNAMIC;
 557
 558         /* relax SMPS constraints for next association */
 559         if (!vif->bss_conf.assoc)
 560                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 561
 562         if (mvmvif->phy_ctxt &&
 563             IWL_COEX_IS_RRC_ON(mvm->last_bt_notif.ttc_rrc_status,
 564                                mvmvif->phy_ctxt->id))
 565                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 566
 567         IWL_DEBUG_COEX(data->mvm,
 568                        "mac %d: bt_activity_grading %d smps_req %d\n",
 569                        mvmvif->id, bt_activity_grading, smps_mode);
 570
 571         if (vif->type == NL80211_IFTYPE_STATION)
 572                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
 573                                     smps_mode);
 574
 575         /* low latency is always primary */
 576         if (iwl_mvm_vif_low_latency(mvmvif)) {
 577                 data->primary_ll = true;
 578
 579                 data->secondary = data->primary;
 580                 data->primary = chanctx_conf;
 581         }
 582
 583         if (vif->type == NL80211_IFTYPE_AP) {
 584                 if (!mvmvif->ap_ibss_active)
 585                         return;
 586
 587                 if (chanctx_conf == data->primary)
 588                         return;
 589
 590                 if (!data->primary_ll) {
 591                         /*
 592                          * downgrade the current primary no matter what its
 593                          * type is.
 594                          */
 595                         data->secondary = data->primary;
 596                         data->primary = chanctx_conf;
 597                 } else {
 598                         /* there is low latency vif - we will be secondary */
 599                         data->secondary = chanctx_conf;
 600                 }
 601                 return;
 602         }
 603
 604         /*
 605          * STA / P2P Client, try to be primary if first vif. If we are in low
 606          * latency mode, we are already in primary and just don't do much
 607          */
 608         if (!data->primary || data->primary == chanctx_conf)
 609                 data->primary = chanctx_conf;
 610         else if (!data->secondary)
 611                 /* if secondary is not NULL, it might be a GO */
 612                 data->secondary = chanctx_conf;
 613
 614         /*
 615          * don't reduce the Tx power if one of these is true:
 616          *  we are in LOOSE
 617          *  single share antenna product
 618          *  BT is active
 619          *  we are associated
 620          */
 621         if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT ||
 622             mvm->cfg->bt_shared_single_ant || !vif->bss_conf.assoc ||
 623             le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) {
 624                 iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false);
 625                 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
 626                 return;
 627         }
 628
 629         /* try to get the avg rssi from fw */
 630         ave_rssi = mvmvif->bf_data.ave_beacon_signal;
 631
 632         /* if the RSSI isn't valid, fake it is very low */
 633         if (!ave_rssi)
 634                 ave_rssi = -100;
 635         if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) {
 636                 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true))
 637                         IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
 638         } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) {
 639                 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false))
 640                         IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
 641         }
 642
 643         /* Begin to monitor the RSSI: it may influence the reduced Tx power */
 644         iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi);
 645 }
 646
 647 static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm)
 648 {
 649         struct iwl_bt_iterator_data data = {
 650                 .mvm = mvm,
 651                 .notif = &mvm->last_bt_notif,
 652         };
 653         struct iwl_bt_coex_ci_cmd cmd = {};
 654         u8 ci_bw_idx;
 655
 656         /* Ignore updates if we are in force mode */
 657         if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
 658                 return;
 659
 660         rcu_read_lock();
 661         ieee80211_iterate_active_interfaces_atomic(
 662                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 663                                         iwl_mvm_bt_notif_iterator, &data);
 664
 665         if (data.primary) {
 666                 struct ieee80211_chanctx_conf *chan = data.primary;
 667                 if (WARN_ON(!chan->def.chan)) {
 668                         rcu_read_unlock();
 669                         return;
 670                 }
 671
 672                 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
 673                         ci_bw_idx = 0;
 674                 } else {
 675                         if (chan->def.center_freq1 >
 676                             chan->def.chan->center_freq)
 677                                 ci_bw_idx = 2;
 678                         else
 679                                 ci_bw_idx = 1;
 680                 }
 681
 682                 cmd.bt_primary_ci =
 683                         iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
 684                 cmd.primary_ch_phy_id =
 685                         cpu_to_le32(*((u16 *)data.primary->drv_priv));
 686         }
 687
 688         if (data.secondary) {
 689                 struct ieee80211_chanctx_conf *chan = data.secondary;
 690                 if (WARN_ON(!data.secondary->def.chan)) {
 691                         rcu_read_unlock();
 692                         return;
 693                 }
 694
 695                 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
 696                         ci_bw_idx = 0;
 697                 } else {
 698                         if (chan->def.center_freq1 >
 699                             chan->def.chan->center_freq)
 700                                 ci_bw_idx = 2;
 701                         else
 702                                 ci_bw_idx = 1;
 703                 }
 704
 705                 cmd.bt_secondary_ci =
 706                         iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
 707                 cmd.secondary_ch_phy_id =
 708                         cpu_to_le32(*((u16 *)data.secondary->drv_priv));
 709         }
 710
 711         rcu_read_unlock();
 712
 713         /* Don't spam the fw with the same command over and over */
 714         if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) {
 715                 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0,
 716                                          sizeof(cmd), &cmd))
 717                         IWL_ERR(mvm, "Failed to send BT_CI cmd\n");
 718                 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd));
 719         }
 720 }
 721
 722 void iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm,
 723                               struct iwl_rx_cmd_buffer *rxb)
 724 {
 725         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 726         struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data;
 727
 728         IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n");
 729         IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance);
 730         IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n",
 731                        le32_to_cpu(notif->primary_ch_lut));
 732         IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n",
 733                        le32_to_cpu(notif->secondary_ch_lut));
 734         IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n",
 735                        le32_to_cpu(notif->bt_activity_grading));
 736
 737         /* remember this notification for future use: rssi fluctuations */
 738         memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif));
 739
 740         iwl_mvm_bt_coex_notif_handle(mvm);
 741 }
 742
 743 void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 744                            enum ieee80211_rssi_event_data rssi_event)
 745 {
 746         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 747         int ret;
 748
 749         lockdep_assert_held(&mvm->mutex);
 750
 751         /* Ignore updates if we are in force mode */
 752         if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
 753                 return;
 754
 755         /*
 756          * Rssi update while not associated - can happen since the statistics
 757          * are handled asynchronously
 758          */
 759         if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)
 760                 return;
 761
 762         /* No BT - reports should be disabled */
 763         if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF)
 764                 return;
 765
 766         IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid,
 767                        rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW");
 768
 769         /*
 770          * Check if rssi is good enough for reduced Tx power, but not in loose
 771          * scheme.
 772          */
 773         if (rssi_event == RSSI_EVENT_LOW || mvm->cfg->bt_shared_single_ant ||
 774             iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT)
 775                 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id,
 776                                                   false);
 777         else
 778                 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true);
 779
 780         if (ret)
 781                 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n");
 782 }
 783
 784 #define LINK_QUAL_AGG_TIME_LIMIT_DEF    (4000)
 785 #define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200)
 786
 787 u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm,
 788                                 struct ieee80211_sta *sta)
 789 {
 790         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 791         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
 792         struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->phy_ctxt;
 793         enum iwl_bt_coex_lut_type lut_type;
 794
 795         if (IWL_COEX_IS_TTC_ON(mvm->last_bt_notif.ttc_rrc_status, phy_ctxt->id))
 796                 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
 797
 798         if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
 799             BT_HIGH_TRAFFIC)
 800                 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
 801
 802         lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
 803
 804         if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT)
 805                 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
 806
 807         /* tight coex, high bt traffic, reduce AGG time limit */
 808         return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT;
 809 }
 810
 811 bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm,
 812                                      struct ieee80211_sta *sta)
 813 {
 814         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 815         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
 816         struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->phy_ctxt;
 817         enum iwl_bt_coex_lut_type lut_type;
 818
 819         if (IWL_COEX_IS_TTC_ON(mvm->last_bt_notif.ttc_rrc_status, phy_ctxt->id))
 820                 return true;
 821
 822         if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
 823             BT_HIGH_TRAFFIC)
 824                 return true;
 825
 826         /*
 827          * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas
 828          * since BT is already killed.
 829          * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while
 830          * we Tx.
 831          * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO.
 832          */
 833         lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
 834         return lut_type != BT_COEX_LOOSE_LUT;
 835 }
 836
 837 bool iwl_mvm_bt_coex_is_ant_avail(struct iwl_mvm *mvm, u8 ant)
 838 {
 839         /* there is no other antenna, shared antenna is always available */
 840         if (mvm->cfg->bt_shared_single_ant)
 841                 return true;
 842
 843         if (ant & mvm->cfg->non_shared_ant)
 844                 return true;
 845
 846         return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
 847                 BT_HIGH_TRAFFIC;
 848 }
 849
 850 bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm)
 851 {
 852         /* there is no other antenna, shared antenna is always available */
 853         if (mvm->cfg->bt_shared_single_ant)
 854                 return true;
 855
 856         return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) < BT_HIGH_TRAFFIC;
 857 }
 858
 859 bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm,
 860                                     enum nl80211_band band)
 861 {
 862         u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading);
 863
 864         if (band != NL80211_BAND_2GHZ)
 865                 return false;
 866
 867         return bt_activity >= BT_LOW_TRAFFIC;
 868 }
 869
 870 u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
 871                            struct ieee80211_tx_info *info, u8 ac)
 872 {
 873         __le16 fc = hdr->frame_control;
 874         bool mplut_enabled = iwl_mvm_is_mplut_supported(mvm);
 875
 876         if (info->band != NL80211_BAND_2GHZ)
 877                 return 0;
 878
 879         if (unlikely(mvm->bt_tx_prio))
 880                 return mvm->bt_tx_prio - 1;
 881
 882         if (likely(ieee80211_is_data(fc))) {
 883                 if (likely(ieee80211_is_data_qos(fc))) {
 884                         switch (ac) {
 885                         case IEEE80211_AC_BE:
 886                                 return mplut_enabled ? 1 : 0;
 887                         case IEEE80211_AC_VI:
 888                                 return mplut_enabled ? 2 : 3;
 889                         case IEEE80211_AC_VO:
 890                                 return 3;
 891                         default:
 892                                 return 0;
 893                         }
 894                 } else if (is_multicast_ether_addr(hdr->addr1)) {
 895                         return 3;
 896                 } else
 897                         return 0;
 898         } else if (ieee80211_is_mgmt(fc)) {
 899                 return ieee80211_is_disassoc(fc) ? 0 : 3;
 900         } else if (ieee80211_is_ctl(fc)) {
 901                 /* ignore cfend and cfendack frames as we never send those */
 902                 return 3;
 903         }
 904
 905         return 0;
 906 }
 907
 908 void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm)
 909 {
 910         iwl_mvm_bt_coex_notif_handle(mvm);
 911 }
 912
 913 void iwl_mvm_rx_ant_coupling_notif(struct iwl_mvm *mvm,
 914                                    struct iwl_rx_cmd_buffer *rxb)
 915 {
 916         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 917         u32 ant_isolation = le32_to_cpup((void *)pkt->data);
 918         struct iwl_bt_coex_corun_lut_update_cmd cmd = {};
 919         u8 __maybe_unused lower_bound, upper_bound;
 920         u8 lut;
 921
 922         if (!iwl_mvm_bt_is_plcr_supported(mvm))
 923                 return;
 924
 925         lockdep_assert_held(&mvm->mutex);
 926
 927         /* Ignore updates if we are in force mode */
 928         if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
 929                 return;
 930
 931         if (ant_isolation ==  mvm->last_ant_isol)
 932                 return;
 933
 934         for (lut = 0; lut < ARRAY_SIZE(antenna_coupling_ranges) - 1; lut++)
 935                 if (ant_isolation < antenna_coupling_ranges[lut + 1].range)
 936                         break;
 937
 938         lower_bound = antenna_coupling_ranges[lut].range;
 939
 940         if (lut < ARRAY_SIZE(antenna_coupling_ranges) - 1)
 941                 upper_bound = antenna_coupling_ranges[lut + 1].range;
 942         else
 943                 upper_bound = antenna_coupling_ranges[lut].range;
 944
 945         IWL_DEBUG_COEX(mvm, "Antenna isolation=%d in range [%d,%d[, lut=%d\n",
 946                        ant_isolation, lower_bound, upper_bound, lut);
 947
 948         mvm->last_ant_isol = ant_isolation;
 949
 950         if (mvm->last_corun_lut == lut)
 951                 return;
 952
 953         mvm->last_corun_lut = lut;
 954
 955         /* For the moment, use the same LUT for 20GHz and 40GHz */
 956         memcpy(&cmd.corun_lut20, antenna_coupling_ranges[lut].lut20,
 957                sizeof(cmd.corun_lut20));
 958
 959         memcpy(&cmd.corun_lut40, antenna_coupling_ranges[lut].lut20,
 960                sizeof(cmd.corun_lut40));
 961
 962         if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_CORUN_LUT, 0,
 963                                  sizeof(cmd), &cmd))
 964                 IWL_ERR(mvm,
 965                         "failed to send BT_COEX_UPDATE_CORUN_LUT command\n");
 966 }