LXR linux/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*/
  76static const __le64 iwl_ci_mask[][3] = {
  77        /* dummy entry for channel 0 */
  78        {cpu_to_le64(0), cpu_to_le64(0), cpu_to_le64(0)},
  79        {
  80                cpu_to_le64(0x0000001FFFULL),
  81                cpu_to_le64(0x0ULL),
  82                cpu_to_le64(0x00007FFFFFULL),
  83        },
  84        {
  85                cpu_to_le64(0x000000FFFFULL),
  86                cpu_to_le64(0x0ULL),
  87                cpu_to_le64(0x0003FFFFFFULL),
  88        },
  89        {
  90                cpu_to_le64(0x000003FFFCULL),
  91                cpu_to_le64(0x0ULL),
  92                cpu_to_le64(0x000FFFFFFCULL),
  93        },
  94        {
  95                cpu_to_le64(0x00001FFFE0ULL),
  96                cpu_to_le64(0x0ULL),
  97                cpu_to_le64(0x007FFFFFE0ULL),
  98        },
  99        {
 100                cpu_to_le64(0x00007FFF80ULL),
 101                cpu_to_le64(0x00007FFFFFULL),
 102                cpu_to_le64(0x01FFFFFF80ULL),
 103        },
 104        {
 105                cpu_to_le64(0x0003FFFC00ULL),
 106                cpu_to_le64(0x0003FFFFFFULL),
 107                cpu_to_le64(0x0FFFFFFC00ULL),
 108        },
 109        {
 110                cpu_to_le64(0x000FFFF000ULL),
 111                cpu_to_le64(0x000FFFFFFCULL),
 112                cpu_to_le64(0x3FFFFFF000ULL),
 113        },
 114        {
 115                cpu_to_le64(0x007FFF8000ULL),
 116                cpu_to_le64(0x007FFFFFE0ULL),
 117                cpu_to_le64(0xFFFFFF8000ULL),
 118        },
 119        {
 120                cpu_to_le64(0x01FFFE0000ULL),
 121                cpu_to_le64(0x01FFFFFF80ULL),
 122                cpu_to_le64(0xFFFFFE0000ULL),
 123        },
 124        {
 125                cpu_to_le64(0x0FFFF00000ULL),
 126                cpu_to_le64(0x0FFFFFFC00ULL),
 127                cpu_to_le64(0x0ULL),
 128        },
 129        {
 130                cpu_to_le64(0x3FFFC00000ULL),
 131                cpu_to_le64(0x3FFFFFF000ULL),
 132                cpu_to_le64(0x0)
 133        },
 134        {
 135                cpu_to_le64(0xFFFE000000ULL),
 136                cpu_to_le64(0xFFFFFF8000ULL),
 137                cpu_to_le64(0x0)
 138        },
 139        {
 140                cpu_to_le64(0xFFF8000000ULL),
 141                cpu_to_le64(0xFFFFFE0000ULL),
 142                cpu_to_le64(0x0)
 143        },
 144        {
 145                cpu_to_le64(0xFE00000000ULL),
 146                cpu_to_le64(0x0ULL),
 147                cpu_to_le64(0x0ULL)
 148        },
 149};
 150
 151struct corunning_block_luts {
 152        u8 range;
 153        __le32 lut20[BT_COEX_CORUN_LUT_SIZE];
 154};
 155
 156/*
 157 * Ranges for the antenna coupling calibration / co-running block LUT:
 158 *              LUT0: [ 0, 12[
 159 *              LUT1: [12, 20[
 160 *              LUT2: [20, 21[
 161 *              LUT3: [21, 23[
 162 *              LUT4: [23, 27[
 163 *              LUT5: [27, 30[
 164 *              LUT6: [30, 32[
 165 *              LUT7: [32, 33[
 166 *              LUT8: [33, - [
 167 */
 168static const struct corunning_block_luts antenna_coupling_ranges[] = {
 169        {
 170                .range = 0,
 171                .lut20 = {
 172                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 173                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 174                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 175                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 176                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 177                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 178                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 179                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 180                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 181                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 182                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 183                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 184                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 185                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 186                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 187                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 188                },
 189        },
 190        {
 191                .range = 12,
 192                .lut20 = {
 193                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 194                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 195                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 196                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 197                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 198                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 199                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 200                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 201                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 202                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 203                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 204                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 205                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 206                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 207                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 208                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 209                },
 210        },
 211        {
 212                .range = 20,
 213                .lut20 = {
 214                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 215                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 216                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 217                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 218                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 219                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 220                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 221                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 222                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 223                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 224                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 225                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 226                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 227                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 228                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 229                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 230                },
 231        },
 232        {
 233                .range = 21,
 234                .lut20 = {
 235                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 236                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 237                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 238                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 239                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 240                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 241                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 242                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 243                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 244                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 245                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 246                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 247                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 248                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 249                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 250                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 251                },
 252        },
 253        {
 254                .range = 23,
 255                .lut20 = {
 256                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 257                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 258                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 259                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 260                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 261                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 262                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 263                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 264                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 265                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 266                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 267                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 268                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 269                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 270                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 271                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 272                },
 273        },
 274        {
 275                .range = 27,
 276                .lut20 = {
 277                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 278                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 279                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 280                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 281                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 282                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 283                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 284                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 285                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 286                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 287                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 288                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 289                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 290                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 291                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 292                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 293                },
 294        },
 295        {
 296                .range = 30,
 297                .lut20 = {
 298                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 299                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 300                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 301                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 302                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 303                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 304                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 305                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 306                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 307                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 308                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 309                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 310                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 311                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 312                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 313                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 314                },
 315        },
 316        {
 317                .range = 32,
 318                .lut20 = {
 319                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 320                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 321                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 322                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 323                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 324                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 325                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 326                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 327                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 328                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 329                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 330                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 331                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 332                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 333                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 334                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 335                },
 336        },
 337        {
 338                .range = 33,
 339                .lut20 = {
 340                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 341                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 342                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 343                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 344                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 345                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 346                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 347                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 348                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 349                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 350                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 351                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 352                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 353                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 354                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 355                        cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 356                },
 357        },
 358};
 359
 360static enum iwl_bt_coex_lut_type
 361iwl_get_coex_type(struct iwl_mvm *mvm, const struct ieee80211_vif *vif)
 362{
 363        struct ieee80211_chanctx_conf *chanctx_conf;
 364        enum iwl_bt_coex_lut_type ret;
 365        u16 phy_ctx_id;
 366        u32 primary_ch_phy_id, secondary_ch_phy_id;
 367
 368        /*
 369         * Checking that we hold mvm->mutex is a good idea, but the rate
 370         * control can't acquire the mutex since it runs in Tx path.
 371         * So this is racy in that case, but in the worst case, the AMPDU
 372         * size limit will be wrong for a short time which is not a big
 373         * issue.
 374         */
 375
 376        rcu_read_lock();
 377
 378        chanctx_conf = rcu_dereference(vif->chanctx_conf);
 379
 380        if (!chanctx_conf ||
 381             chanctx_conf->def.chan->band != 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
 409int 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
 448send_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
 455static 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
 488struct 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
 496static inline
 497void 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 */
 511static 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 inactive
 619         *  we are not 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
 647static 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
 722void 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
 743void 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
 787u16 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
 811bool 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
 837bool 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
 850bool 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
 859bool 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
 870u8 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
 908void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm)
 909{
 910        iwl_mvm_bt_coex_notif_handle(mvm);
 911}
 912
 913void 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}
 967