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

   1 /******************************************************************************
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   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved.
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  11  * it under the terms of version 2 of the GNU General Public License as
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  32  *
  33  * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved.
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  44  *    the documentation and/or other materials provided with the
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  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
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  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63
  64 #include <linux/ieee80211.h>
  65 #include <linux/etherdevice.h>
  66 #include <net/mac80211.h>
  67
  68 #include "fw-api-coex.h"
  69 #include "iwl-modparams.h"
  70 #include "mvm.h"
  71 #include "iwl-debug.h"
  72
  73 #define BT_ANTENNA_COUPLING_THRESHOLD           (30)
  74
  75 const u32 iwl_bt_ack_kill_msk[BT_KILL_MSK_MAX] = {
  76         [BT_KILL_MSK_DEFAULT] = 0xffff0000,
  77         [BT_KILL_MSK_SCO_HID_A2DP] = 0xffffffff,
  78         [BT_KILL_MSK_REDUCED_TXPOW] = 0,
  79 };
  80
  81 const u32 iwl_bt_cts_kill_msk[BT_KILL_MSK_MAX] = {
  82         [BT_KILL_MSK_DEFAULT] = 0xffff0000,
  83         [BT_KILL_MSK_SCO_HID_A2DP] = 0xffffffff,
  84         [BT_KILL_MSK_REDUCED_TXPOW] = 0,
  85 };
  86
  87 static const __le32 iwl_bt_prio_boost[BT_COEX_BOOST_SIZE] = {
  88         cpu_to_le32(0xf0f0f0f0), /* 50% */
  89         cpu_to_le32(0xc0c0c0c0), /* 25% */
  90         cpu_to_le32(0xfcfcfcfc), /* 75% */
  91         cpu_to_le32(0xfefefefe), /* 87.5% */
  92 };
  93
  94 static const __le32 iwl_single_shared_ant[BT_COEX_MAX_LUT][BT_COEX_LUT_SIZE] = {
  95         {
  96                 cpu_to_le32(0x40000000),
  97                 cpu_to_le32(0x00000000),
  98                 cpu_to_le32(0x44000000),
  99                 cpu_to_le32(0x00000000),
 100                 cpu_to_le32(0x40000000),
 101                 cpu_to_le32(0x00000000),
 102                 cpu_to_le32(0x44000000),
 103                 cpu_to_le32(0x00000000),
 104                 cpu_to_le32(0xc0004000),
 105                 cpu_to_le32(0xf0005000),
 106                 cpu_to_le32(0xc0004000),
 107                 cpu_to_le32(0xf0005000),
 108         },
 109         {
 110                 cpu_to_le32(0x40000000),
 111                 cpu_to_le32(0x00000000),
 112                 cpu_to_le32(0x44000000),
 113                 cpu_to_le32(0x00000000),
 114                 cpu_to_le32(0x40000000),
 115                 cpu_to_le32(0x00000000),
 116                 cpu_to_le32(0x44000000),
 117                 cpu_to_le32(0x00000000),
 118                 cpu_to_le32(0xc0004000),
 119                 cpu_to_le32(0xf0005000),
 120                 cpu_to_le32(0xc0004000),
 121                 cpu_to_le32(0xf0005000),
 122         },
 123         {
 124                 cpu_to_le32(0x40000000),
 125                 cpu_to_le32(0x00000000),
 126                 cpu_to_le32(0x44000000),
 127                 cpu_to_le32(0x00000000),
 128                 cpu_to_le32(0x40000000),
 129                 cpu_to_le32(0x00000000),
 130                 cpu_to_le32(0x44000000),
 131                 cpu_to_le32(0x00000000),
 132                 cpu_to_le32(0xc0004000),
 133                 cpu_to_le32(0xf0005000),
 134                 cpu_to_le32(0xc0004000),
 135                 cpu_to_le32(0xf0005000),
 136         },
 137 };
 138
 139 static const __le32 iwl_combined_lookup[BT_COEX_MAX_LUT][BT_COEX_LUT_SIZE] = {
 140         {
 141                 /* Tight */
 142                 cpu_to_le32(0xaaaaaaaa),
 143                 cpu_to_le32(0xaaaaaaaa),
 144                 cpu_to_le32(0xaeaaaaaa),
 145                 cpu_to_le32(0xaaaaaaaa),
 146                 cpu_to_le32(0xcc00ff28),
 147                 cpu_to_le32(0x0000aaaa),
 148                 cpu_to_le32(0xcc00aaaa),
 149                 cpu_to_le32(0x0000aaaa),
 150                 cpu_to_le32(0xc0004000),
 151                 cpu_to_le32(0x00004000),
 152                 cpu_to_le32(0xf0005000),
 153                 cpu_to_le32(0xf0005000),
 154         },
 155         {
 156                 /* Loose */
 157                 cpu_to_le32(0xaaaaaaaa),
 158                 cpu_to_le32(0xaaaaaaaa),
 159                 cpu_to_le32(0xaaaaaaaa),
 160                 cpu_to_le32(0xaaaaaaaa),
 161                 cpu_to_le32(0xcc00ff28),
 162                 cpu_to_le32(0x0000aaaa),
 163                 cpu_to_le32(0xcc00aaaa),
 164                 cpu_to_le32(0x0000aaaa),
 165                 cpu_to_le32(0x00000000),
 166                 cpu_to_le32(0x00000000),
 167                 cpu_to_le32(0xf0005000),
 168                 cpu_to_le32(0xf0005000),
 169         },
 170         {
 171                 /* Tx Tx disabled */
 172                 cpu_to_le32(0xaaaaaaaa),
 173                 cpu_to_le32(0xaaaaaaaa),
 174                 cpu_to_le32(0xeeaaaaaa),
 175                 cpu_to_le32(0xaaaaaaaa),
 176                 cpu_to_le32(0xcc00ff28),
 177                 cpu_to_le32(0x0000aaaa),
 178                 cpu_to_le32(0xcc00aaaa),
 179                 cpu_to_le32(0x0000aaaa),
 180                 cpu_to_le32(0xc0004000),
 181                 cpu_to_le32(0xc0004000),
 182                 cpu_to_le32(0xf0005000),
 183                 cpu_to_le32(0xf0005000),
 184         },
 185 };
 186
 187 /* 20MHz / 40MHz below / 40Mhz above*/
 188 static const __le64 iwl_ci_mask[][3] = {
 189         /* dummy entry for channel 0 */
 190         {cpu_to_le64(0), cpu_to_le64(0), cpu_to_le64(0)},
 191         {
 192                 cpu_to_le64(0x0000001FFFULL),
 193                 cpu_to_le64(0x0ULL),
 194                 cpu_to_le64(0x00007FFFFFULL),
 195         },
 196         {
 197                 cpu_to_le64(0x000000FFFFULL),
 198                 cpu_to_le64(0x0ULL),
 199                 cpu_to_le64(0x0003FFFFFFULL),
 200         },
 201         {
 202                 cpu_to_le64(0x000003FFFCULL),
 203                 cpu_to_le64(0x0ULL),
 204                 cpu_to_le64(0x000FFFFFFCULL),
 205         },
 206         {
 207                 cpu_to_le64(0x00001FFFE0ULL),
 208                 cpu_to_le64(0x0ULL),
 209                 cpu_to_le64(0x007FFFFFE0ULL),
 210         },
 211         {
 212                 cpu_to_le64(0x00007FFF80ULL),
 213                 cpu_to_le64(0x00007FFFFFULL),
 214                 cpu_to_le64(0x01FFFFFF80ULL),
 215         },
 216         {
 217                 cpu_to_le64(0x0003FFFC00ULL),
 218                 cpu_to_le64(0x0003FFFFFFULL),
 219                 cpu_to_le64(0x0FFFFFFC00ULL),
 220         },
 221         {
 222                 cpu_to_le64(0x000FFFF000ULL),
 223                 cpu_to_le64(0x000FFFFFFCULL),
 224                 cpu_to_le64(0x3FFFFFF000ULL),
 225         },
 226         {
 227                 cpu_to_le64(0x007FFF8000ULL),
 228                 cpu_to_le64(0x007FFFFFE0ULL),
 229                 cpu_to_le64(0xFFFFFF8000ULL),
 230         },
 231         {
 232                 cpu_to_le64(0x01FFFE0000ULL),
 233                 cpu_to_le64(0x01FFFFFF80ULL),
 234                 cpu_to_le64(0xFFFFFE0000ULL),
 235         },
 236         {
 237                 cpu_to_le64(0x0FFFF00000ULL),
 238                 cpu_to_le64(0x0FFFFFFC00ULL),
 239                 cpu_to_le64(0x0ULL),
 240         },
 241         {
 242                 cpu_to_le64(0x3FFFC00000ULL),
 243                 cpu_to_le64(0x3FFFFFF000ULL),
 244                 cpu_to_le64(0x0)
 245         },
 246         {
 247                 cpu_to_le64(0xFFFE000000ULL),
 248                 cpu_to_le64(0xFFFFFF8000ULL),
 249                 cpu_to_le64(0x0)
 250         },
 251         {
 252                 cpu_to_le64(0xFFF8000000ULL),
 253                 cpu_to_le64(0xFFFFFE0000ULL),
 254                 cpu_to_le64(0x0)
 255         },
 256         {
 257                 cpu_to_le64(0xFFC0000000ULL),
 258                 cpu_to_le64(0x0ULL),
 259                 cpu_to_le64(0x0ULL)
 260         },
 261 };
 262
 263 static const __le32 iwl_bt_mprio_lut[BT_COEX_MULTI_PRIO_LUT_SIZE] = {
 264         cpu_to_le32(0x28412201),
 265         cpu_to_le32(0x11118451),
 266 };
 267
 268 struct corunning_block_luts {
 269         u8 range;
 270         __le32 lut20[BT_COEX_CORUN_LUT_SIZE];
 271 };
 272
 273 /*
 274  * Ranges for the antenna coupling calibration / co-running block LUT:
 275  *              LUT0: [ 0, 12[
 276  *              LUT1: [12, 20[
 277  *              LUT2: [20, 21[
 278  *              LUT3: [21, 23[
 279  *              LUT4: [23, 27[
 280  *              LUT5: [27, 30[
 281  *              LUT6: [30, 32[
 282  *              LUT7: [32, 33[
 283  *              LUT8: [33, - [
 284  */
 285 static const struct corunning_block_luts antenna_coupling_ranges[] = {
 286         {
 287                 .range = 0,
 288                 .lut20 = {
 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                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 294                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 295                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 296                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 297                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 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                 },
 306         },
 307         {
 308                 .range = 12,
 309                 .lut20 = {
 310                         cpu_to_le32(0x00000001),  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                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 315                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 316                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 317                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 318                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 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                 },
 327         },
 328         {
 329                 .range = 20,
 330                 .lut20 = {
 331                         cpu_to_le32(0x00000002),  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                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 336                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 337                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 338                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 339                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 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                 },
 348         },
 349         {
 350                 .range = 21,
 351                 .lut20 = {
 352                         cpu_to_le32(0x00000003),  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                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 357                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 358                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 359                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 360                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 361                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 362                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 363                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 364                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 365                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 366                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 367                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 368                 },
 369         },
 370         {
 371                 .range = 23,
 372                 .lut20 = {
 373                         cpu_to_le32(0x00000004),  cpu_to_le32(0x00000000),
 374                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 375                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 376                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 377                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 378                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 379                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 380                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 381                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 382                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 383                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 384                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 385                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 386                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 387                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 388                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 389                 },
 390         },
 391         {
 392                 .range = 27,
 393                 .lut20 = {
 394                         cpu_to_le32(0x00000005),  cpu_to_le32(0x00000000),
 395                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 396                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 397                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 398                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 399                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 400                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 401                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 402                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 403                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 404                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 405                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 406                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 407                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 408                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 409                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 410                 },
 411         },
 412         {
 413                 .range = 30,
 414                 .lut20 = {
 415                         cpu_to_le32(0x00000006),  cpu_to_le32(0x00000000),
 416                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 417                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 418                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 419                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 420                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 421                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 422                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 423                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 424                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 425                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 426                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 427                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 428                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 429                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 430                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 431                 },
 432         },
 433         {
 434                 .range = 32,
 435                 .lut20 = {
 436                         cpu_to_le32(0x00000007),  cpu_to_le32(0x00000000),
 437                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 438                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 439                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 440                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 441                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 442                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 443                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 444                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 445                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 446                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 447                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 448                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 449                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 450                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 451                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 452                 },
 453         },
 454         {
 455                 .range = 33,
 456                 .lut20 = {
 457                         cpu_to_le32(0x00000008),  cpu_to_le32(0x00000000),
 458                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 459                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 460                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 461                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 462                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 463                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 464                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 465                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 466                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 467                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 468                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 469                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 470                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 471                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 472                         cpu_to_le32(0x00000000),  cpu_to_le32(0x00000000),
 473                 },
 474         },
 475 };
 476
 477 static enum iwl_bt_coex_lut_type
 478 iwl_get_coex_type(struct iwl_mvm *mvm, const struct ieee80211_vif *vif)
 479 {
 480         struct ieee80211_chanctx_conf *chanctx_conf;
 481         enum iwl_bt_coex_lut_type ret;
 482         u16 phy_ctx_id;
 483         u32 primary_ch_phy_id, secondary_ch_phy_id;
 484
 485         /*
 486          * Checking that we hold mvm->mutex is a good idea, but the rate
 487          * control can't acquire the mutex since it runs in Tx path.
 488          * So this is racy in that case, but in the worst case, the AMPDU
 489          * size limit will be wrong for a short time which is not a big
 490          * issue.
 491          */
 492
 493         rcu_read_lock();
 494
 495         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 496
 497         if (!chanctx_conf ||
 498              chanctx_conf->def.chan->band != IEEE80211_BAND_2GHZ) {
 499                 rcu_read_unlock();
 500                 return BT_COEX_INVALID_LUT;
 501         }
 502
 503         ret = BT_COEX_TX_DIS_LUT;
 504
 505         if (mvm->cfg->bt_shared_single_ant) {
 506                 rcu_read_unlock();
 507                 return ret;
 508         }
 509
 510         phy_ctx_id = *((u16 *)chanctx_conf->drv_priv);
 511         primary_ch_phy_id = le32_to_cpu(mvm->last_bt_ci_cmd.primary_ch_phy_id);
 512         secondary_ch_phy_id =
 513                 le32_to_cpu(mvm->last_bt_ci_cmd.secondary_ch_phy_id);
 514
 515         if (primary_ch_phy_id == phy_ctx_id)
 516                 ret = le32_to_cpu(mvm->last_bt_notif.primary_ch_lut);
 517         else if (secondary_ch_phy_id == phy_ctx_id)
 518                 ret = le32_to_cpu(mvm->last_bt_notif.secondary_ch_lut);
 519         /* else - default = TX TX disallowed */
 520
 521         rcu_read_unlock();
 522
 523         return ret;
 524 }
 525
 526 int iwl_send_bt_init_conf(struct iwl_mvm *mvm)
 527 {
 528         struct iwl_bt_coex_cmd *bt_cmd;
 529         struct iwl_host_cmd cmd = {
 530                 .id = BT_CONFIG,
 531                 .len = { sizeof(*bt_cmd), },
 532                 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
 533         };
 534         int ret;
 535         u32 mode;
 536
 537         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 538                 return iwl_send_bt_init_conf_old(mvm);
 539
 540         bt_cmd = kzalloc(sizeof(*bt_cmd), GFP_KERNEL);
 541         if (!bt_cmd)
 542                 return -ENOMEM;
 543         cmd.data[0] = bt_cmd;
 544
 545         lockdep_assert_held(&mvm->mutex);
 546
 547         if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) {
 548                 u32 mode;
 549
 550                 switch (mvm->bt_force_ant_mode) {
 551                 case BT_FORCE_ANT_BT:
 552                         mode = BT_COEX_BT;
 553                         break;
 554                 case BT_FORCE_ANT_WIFI:
 555                         mode = BT_COEX_WIFI;
 556                         break;
 557                 default:
 558                         WARN_ON(1);
 559                         mode = 0;
 560                 }
 561
 562                 bt_cmd->mode = cpu_to_le32(mode);
 563                 goto send_cmd;
 564         }
 565
 566         bt_cmd->max_kill = cpu_to_le32(5);
 567         bt_cmd->bt4_antenna_isolation_thr =
 568                                 cpu_to_le32(BT_ANTENNA_COUPLING_THRESHOLD);
 569         bt_cmd->bt4_tx_tx_delta_freq_thr = cpu_to_le32(15);
 570         bt_cmd->bt4_tx_rx_max_freq0 = cpu_to_le32(15);
 571         bt_cmd->override_primary_lut = cpu_to_le32(BT_COEX_INVALID_LUT);
 572         bt_cmd->override_secondary_lut = cpu_to_le32(BT_COEX_INVALID_LUT);
 573
 574         mode = iwlwifi_mod_params.bt_coex_active ? BT_COEX_NW : BT_COEX_DISABLE;
 575         bt_cmd->mode = cpu_to_le32(mode);
 576
 577         if (IWL_MVM_BT_COEX_SYNC2SCO)
 578                 bt_cmd->enabled_modules |=
 579                         cpu_to_le32(BT_COEX_SYNC2SCO_ENABLED);
 580
 581         if (IWL_MVM_BT_COEX_CORUNNING)
 582                 bt_cmd->enabled_modules |= cpu_to_le32(BT_COEX_CORUN_ENABLED);
 583
 584         if (IWL_MVM_BT_COEX_MPLUT) {
 585                 bt_cmd->enabled_modules |= cpu_to_le32(BT_COEX_MPLUT_ENABLED);
 586                 bt_cmd->enabled_modules |=
 587                         cpu_to_le32(BT_COEX_MPLUT_BOOST_ENABLED);
 588         }
 589
 590         if (mvm->cfg->bt_shared_single_ant)
 591                 memcpy(&bt_cmd->decision_lut, iwl_single_shared_ant,
 592                        sizeof(iwl_single_shared_ant));
 593         else
 594                 memcpy(&bt_cmd->decision_lut, iwl_combined_lookup,
 595                        sizeof(iwl_combined_lookup));
 596
 597         memcpy(&bt_cmd->mplut_prio_boost, iwl_bt_prio_boost,
 598                sizeof(iwl_bt_prio_boost));
 599         memcpy(&bt_cmd->multiprio_lut, iwl_bt_mprio_lut,
 600                sizeof(iwl_bt_mprio_lut));
 601
 602 send_cmd:
 603         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 604         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
 605
 606         ret = iwl_mvm_send_cmd(mvm, &cmd);
 607
 608         kfree(bt_cmd);
 609         return ret;
 610 }
 611
 612 static int iwl_mvm_bt_udpate_sw_boost(struct iwl_mvm *mvm,
 613                                       bool reduced_tx_power)
 614 {
 615         enum iwl_bt_kill_msk bt_kill_msk;
 616         struct iwl_bt_coex_sw_boost_update_cmd cmd = {};
 617         struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif;
 618
 619         lockdep_assert_held(&mvm->mutex);
 620
 621         if (reduced_tx_power) {
 622                 /* Reduced Tx power has precedence on the type of the profile */
 623                 bt_kill_msk = BT_KILL_MSK_REDUCED_TXPOW;
 624         } else {
 625                 /* Low latency BT profile is active: give higher prio to BT */
 626                 if (BT_MBOX_MSG(notif, 3, SCO_STATE)  ||
 627                     BT_MBOX_MSG(notif, 3, A2DP_STATE) ||
 628                     BT_MBOX_MSG(notif, 3, SNIFF_STATE))
 629                         bt_kill_msk = BT_KILL_MSK_SCO_HID_A2DP;
 630                 else
 631                         bt_kill_msk = BT_KILL_MSK_DEFAULT;
 632         }
 633
 634         IWL_DEBUG_COEX(mvm,
 635                        "Update kill_msk: %d - SCO %sactive A2DP %sactive SNIFF %sactive\n",
 636                        bt_kill_msk,
 637                        BT_MBOX_MSG(notif, 3, SCO_STATE) ? "" : "in",
 638                        BT_MBOX_MSG(notif, 3, A2DP_STATE) ? "" : "in",
 639                        BT_MBOX_MSG(notif, 3, SNIFF_STATE) ? "" : "in");
 640
 641         /* Don't send HCMD if there is no update */
 642         if (bt_kill_msk == mvm->bt_kill_msk)
 643                 return 0;
 644
 645         mvm->bt_kill_msk = bt_kill_msk;
 646
 647         cmd.boost_values[0].kill_ack_msk =
 648                 cpu_to_le32(iwl_bt_ack_kill_msk[bt_kill_msk]);
 649         cmd.boost_values[0].kill_cts_msk =
 650                 cpu_to_le32(iwl_bt_cts_kill_msk[bt_kill_msk]);
 651
 652         cmd.boost_values[1].kill_ack_msk = cmd.boost_values[0].kill_ack_msk;
 653         cmd.boost_values[2].kill_cts_msk = cmd.boost_values[0].kill_cts_msk;
 654         cmd.boost_values[1].kill_ack_msk = cmd.boost_values[0].kill_ack_msk;
 655         cmd.boost_values[2].kill_cts_msk = cmd.boost_values[0].kill_cts_msk;
 656
 657         IWL_DEBUG_COEX(mvm, "ACK Kill msk = 0x%08x, CTS Kill msk = 0x%08x\n",
 658                        iwl_bt_ack_kill_msk[bt_kill_msk],
 659                        iwl_bt_cts_kill_msk[bt_kill_msk]);
 660
 661         return iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_SW_BOOST, 0,
 662                                     sizeof(cmd), &cmd);
 663 }
 664
 665 static int iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm *mvm, u8 sta_id,
 666                                        bool enable)
 667 {
 668         struct iwl_bt_coex_cmd_old *bt_cmd;
 669         /* Send ASYNC since this can be sent from an atomic context */
 670         struct iwl_host_cmd cmd = {
 671                 .id = BT_CONFIG,
 672                 .len = { sizeof(*bt_cmd), },
 673                 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
 674                 .flags = CMD_ASYNC,
 675         };
 676         struct iwl_mvm_sta *mvmsta;
 677         int ret;
 678
 679         return 0;
 680
 681         mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
 682         if (!mvmsta)
 683                 return 0;
 684
 685         /* nothing to do */
 686         if (mvmsta->bt_reduced_txpower == enable)
 687                 return 0;
 688
 689         bt_cmd = kzalloc(sizeof(*bt_cmd), GFP_ATOMIC);
 690         if (!bt_cmd)
 691                 return -ENOMEM;
 692         cmd.data[0] = bt_cmd;
 693         bt_cmd->flags = cpu_to_le32(BT_COEX_NW_OLD);
 694
 695         bt_cmd->valid_bit_msk =
 696                 cpu_to_le32(BT_VALID_ENABLE | BT_VALID_REDUCED_TX_POWER);
 697         bt_cmd->bt_reduced_tx_power = sta_id;
 698
 699         if (enable)
 700                 bt_cmd->bt_reduced_tx_power |= BT_REDUCED_TX_POWER_BIT;
 701
 702         IWL_DEBUG_COEX(mvm, "%sable reduced Tx Power for sta %d\n",
 703                        enable ? "en" : "dis", sta_id);
 704
 705         mvmsta->bt_reduced_txpower = enable;
 706
 707         ret = iwl_mvm_send_cmd(mvm, &cmd);
 708
 709         kfree(bt_cmd);
 710         return ret;
 711 }
 712
 713 struct iwl_bt_iterator_data {
 714         struct iwl_bt_coex_profile_notif *notif;
 715         struct iwl_mvm *mvm;
 716         u32 num_bss_ifaces;
 717         bool reduced_tx_power;
 718         struct ieee80211_chanctx_conf *primary;
 719         struct ieee80211_chanctx_conf *secondary;
 720         bool primary_ll;
 721 };
 722
 723 static inline
 724 void iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm *mvm,
 725                                        struct ieee80211_vif *vif,
 726                                        bool enable, int rssi)
 727 {
 728         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 729
 730         mvmvif->bf_data.last_bt_coex_event = rssi;
 731         mvmvif->bf_data.bt_coex_max_thold =
 732                 enable ? -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH : 0;
 733         mvmvif->bf_data.bt_coex_min_thold =
 734                 enable ? -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH : 0;
 735 }
 736
 737 /* must be called under rcu_read_lock */
 738 static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac,
 739                                       struct ieee80211_vif *vif)
 740 {
 741         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 742         struct iwl_bt_iterator_data *data = _data;
 743         struct iwl_mvm *mvm = data->mvm;
 744         struct ieee80211_chanctx_conf *chanctx_conf;
 745         enum ieee80211_smps_mode smps_mode;
 746         u32 bt_activity_grading;
 747         int ave_rssi;
 748
 749         lockdep_assert_held(&mvm->mutex);
 750
 751         switch (vif->type) {
 752         case NL80211_IFTYPE_STATION:
 753                 /* Count BSSes vifs */
 754                 data->num_bss_ifaces++;
 755                 /* default smps_mode for BSS / P2P client is AUTOMATIC */
 756                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 757                 break;
 758         case NL80211_IFTYPE_AP:
 759                 /* default smps_mode for AP / GO is OFF */
 760                 smps_mode = IEEE80211_SMPS_OFF;
 761                 if (!mvmvif->ap_ibss_active) {
 762                         iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
 763                                             smps_mode);
 764                         return;
 765                 }
 766
 767                 /* the Ack / Cts kill mask must be default if AP / GO */
 768                 data->reduced_tx_power = false;
 769                 break;
 770         default:
 771                 return;
 772         }
 773
 774         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 775
 776         /* If channel context is invalid or not on 2.4GHz .. */
 777         if ((!chanctx_conf ||
 778              chanctx_conf->def.chan->band != IEEE80211_BAND_2GHZ)) {
 779                 /* ... relax constraints and disable rssi events */
 780                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
 781                                     smps_mode);
 782                 data->reduced_tx_power = false;
 783                 if (vif->type == NL80211_IFTYPE_STATION) {
 784                         iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id,
 785                                                     false);
 786                         iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
 787                 }
 788                 return;
 789         }
 790
 791         bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading);
 792         if (bt_activity_grading >= BT_HIGH_TRAFFIC)
 793                 smps_mode = IEEE80211_SMPS_STATIC;
 794         else if (bt_activity_grading >= BT_LOW_TRAFFIC)
 795                 smps_mode = vif->type == NL80211_IFTYPE_AP ?
 796                                 IEEE80211_SMPS_OFF :
 797                                 IEEE80211_SMPS_DYNAMIC;
 798
 799         /* relax SMPS contraints for next association */
 800         if (!vif->bss_conf.assoc)
 801                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 802
 803         IWL_DEBUG_COEX(data->mvm,
 804                        "mac %d: bt_activity_grading %d smps_req %d\n",
 805                        mvmvif->id, bt_activity_grading, smps_mode);
 806
 807         iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, smps_mode);
 808
 809         /* low latency is always primary */
 810         if (iwl_mvm_vif_low_latency(mvmvif)) {
 811                 data->primary_ll = true;
 812
 813                 data->secondary = data->primary;
 814                 data->primary = chanctx_conf;
 815         }
 816
 817         if (vif->type == NL80211_IFTYPE_AP) {
 818                 if (!mvmvif->ap_ibss_active)
 819                         return;
 820
 821                 if (chanctx_conf == data->primary)
 822                         return;
 823
 824                 if (!data->primary_ll) {
 825                         /*
 826                          * downgrade the current primary no matter what its
 827                          * type is.
 828                          */
 829                         data->secondary = data->primary;
 830                         data->primary = chanctx_conf;
 831                 } else {
 832                         /* there is low latency vif - we will be secondary */
 833                         data->secondary = chanctx_conf;
 834                 }
 835                 return;
 836         }
 837
 838         /*
 839          * STA / P2P Client, try to be primary if first vif. If we are in low
 840          * latency mode, we are already in primary and just don't do much
 841          */
 842         if (!data->primary || data->primary == chanctx_conf)
 843                 data->primary = chanctx_conf;
 844         else if (!data->secondary)
 845                 /* if secondary is not NULL, it might be a GO */
 846                 data->secondary = chanctx_conf;
 847
 848         /*
 849          * don't reduce the Tx power if one of these is true:
 850          *  we are in LOOSE
 851          *  single share antenna product
 852          *  BT is active
 853          *  we are associated
 854          */
 855         if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT ||
 856             mvm->cfg->bt_shared_single_ant || !vif->bss_conf.assoc ||
 857             le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) {
 858                 data->reduced_tx_power = false;
 859                 iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false);
 860                 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
 861                 return;
 862         }
 863
 864         /* try to get the avg rssi from fw */
 865         ave_rssi = mvmvif->bf_data.ave_beacon_signal;
 866
 867         /* if the RSSI isn't valid, fake it is very low */
 868         if (!ave_rssi)
 869                 ave_rssi = -100;
 870         if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) {
 871                 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true))
 872                         IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
 873
 874                 /*
 875                  * bt_kill_msk can be BT_KILL_MSK_REDUCED_TXPOW only if all the
 876                  * BSS / P2P clients have rssi above threshold.
 877                  * We set the bt_kill_msk to BT_KILL_MSK_REDUCED_TXPOW before
 878                  * the iteration, if one interface's rssi isn't good enough,
 879                  * bt_kill_msk will be set to default values.
 880                  */
 881         } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) {
 882                 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false))
 883                         IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
 884
 885                 /*
 886                  * One interface hasn't rssi above threshold, bt_kill_msk must
 887                  * be set to default values.
 888                  */
 889                 data->reduced_tx_power = false;
 890         }
 891
 892         /* Begin to monitor the RSSI: it may influence the reduced Tx power */
 893         iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi);
 894 }
 895
 896 static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm)
 897 {
 898         struct iwl_bt_iterator_data data = {
 899                 .mvm = mvm,
 900                 .notif = &mvm->last_bt_notif,
 901                 .reduced_tx_power = true,
 902         };
 903         struct iwl_bt_coex_ci_cmd cmd = {};
 904         u8 ci_bw_idx;
 905
 906         /* Ignore updates if we are in force mode */
 907         if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
 908                 return;
 909
 910         rcu_read_lock();
 911         ieee80211_iterate_active_interfaces_atomic(
 912                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 913                                         iwl_mvm_bt_notif_iterator, &data);
 914
 915         if (data.primary) {
 916                 struct ieee80211_chanctx_conf *chan = data.primary;
 917                 if (WARN_ON(!chan->def.chan)) {
 918                         rcu_read_unlock();
 919                         return;
 920                 }
 921
 922                 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
 923                         ci_bw_idx = 0;
 924                 } else {
 925                         if (chan->def.center_freq1 >
 926                             chan->def.chan->center_freq)
 927                                 ci_bw_idx = 2;
 928                         else
 929                                 ci_bw_idx = 1;
 930                 }
 931
 932                 cmd.bt_primary_ci =
 933                         iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
 934                 cmd.primary_ch_phy_id =
 935                         cpu_to_le32(*((u16 *)data.primary->drv_priv));
 936         }
 937
 938         if (data.secondary) {
 939                 struct ieee80211_chanctx_conf *chan = data.secondary;
 940                 if (WARN_ON(!data.secondary->def.chan)) {
 941                         rcu_read_unlock();
 942                         return;
 943                 }
 944
 945                 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
 946                         ci_bw_idx = 0;
 947                 } else {
 948                         if (chan->def.center_freq1 >
 949                             chan->def.chan->center_freq)
 950                                 ci_bw_idx = 2;
 951                         else
 952                                 ci_bw_idx = 1;
 953                 }
 954
 955                 cmd.bt_secondary_ci =
 956                         iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
 957                 cmd.secondary_ch_phy_id =
 958                         cpu_to_le32(*((u16 *)data.secondary->drv_priv));
 959         }
 960
 961         rcu_read_unlock();
 962
 963         /* Don't spam the fw with the same command over and over */
 964         if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) {
 965                 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0,
 966                                          sizeof(cmd), &cmd))
 967                         IWL_ERR(mvm, "Failed to send BT_CI cmd\n");
 968                 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd));
 969         }
 970
 971         /*
 972          * If there are no BSS / P2P client interfaces, reduced Tx Power is
 973          * irrelevant since it is based on the RSSI coming from the beacon.
 974          * Use BT_KILL_MSK_DEFAULT in that case.
 975          */
 976         data.reduced_tx_power = data.reduced_tx_power && data.num_bss_ifaces;
 977
 978         if (iwl_mvm_bt_udpate_sw_boost(mvm, data.reduced_tx_power))
 979                 IWL_ERR(mvm, "Failed to update the ctrl_kill_msk\n");
 980 }
 981
 982 int iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm,
 983                              struct iwl_rx_cmd_buffer *rxb,
 984                              struct iwl_device_cmd *dev_cmd)
 985 {
 986         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 987         struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data;
 988
 989         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 990                 return iwl_mvm_rx_bt_coex_notif_old(mvm, rxb, dev_cmd);
 991
 992         IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n");
 993         IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance);
 994         IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n",
 995                        le32_to_cpu(notif->primary_ch_lut));
 996         IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n",
 997                        le32_to_cpu(notif->secondary_ch_lut));
 998         IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n",
 999                        le32_to_cpu(notif->bt_activity_grading));
1000
1001         /* remember this notification for future use: rssi fluctuations */
1002         memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif));
1003
1004         iwl_mvm_bt_coex_notif_handle(mvm);
1005
1006         /*
1007          * This is an async handler for a notification, returning anything other
1008          * than 0 doesn't make sense even if HCMD failed.
1009          */
1010         return 0;
1011 }
1012
1013 static void iwl_mvm_bt_rssi_iterator(void *_data, u8 *mac,
1014                                    struct ieee80211_vif *vif)
1015 {
1016         struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv;
1017         struct iwl_bt_iterator_data *data = _data;
1018         struct iwl_mvm *mvm = data->mvm;
1019
1020         struct ieee80211_sta *sta;
1021         struct iwl_mvm_sta *mvmsta;
1022
1023         struct ieee80211_chanctx_conf *chanctx_conf;
1024
1025         rcu_read_lock();
1026         chanctx_conf = rcu_dereference(vif->chanctx_conf);
1027         /* If channel context is invalid or not on 2.4GHz - don't count it */
1028         if (!chanctx_conf ||
1029             chanctx_conf->def.chan->band != IEEE80211_BAND_2GHZ) {
1030                 rcu_read_unlock();
1031                 return;
1032         }
1033         rcu_read_unlock();
1034
1035         if (vif->type != NL80211_IFTYPE_STATION ||
1036             mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)
1037                 return;
1038
1039         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1040                                         lockdep_is_held(&mvm->mutex));
1041
1042         /* This can happen if the station has been removed right now */
1043         if (IS_ERR_OR_NULL(sta))
1044                 return;
1045
1046         mvmsta = iwl_mvm_sta_from_mac80211(sta);
1047
1048         data->num_bss_ifaces++;
1049
1050         /*
1051          * This interface doesn't support reduced Tx power (because of low
1052          * RSSI probably), then set bt_kill_msk to default values.
1053          */
1054         if (!mvmsta->bt_reduced_txpower)
1055                 data->reduced_tx_power = false;
1056         /* else - possibly leave it to BT_KILL_MSK_REDUCED_TXPOW */
1057 }
1058
1059 void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1060                            enum ieee80211_rssi_event rssi_event)
1061 {
1062         struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv;
1063         struct iwl_bt_iterator_data data = {
1064                 .mvm = mvm,
1065                 .reduced_tx_power = true,
1066         };
1067         int ret;
1068
1069         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT)) {
1070                 iwl_mvm_bt_rssi_event_old(mvm, vif, rssi_event);
1071                 return;
1072         }
1073
1074         lockdep_assert_held(&mvm->mutex);
1075
1076         /* Ignore updates if we are in force mode */
1077         if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
1078                 return;
1079
1080         /*
1081          * Rssi update while not associated - can happen since the statistics
1082          * are handled asynchronously
1083          */
1084         if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)
1085                 return;
1086
1087         /* No BT - reports should be disabled */
1088         if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF)
1089                 return;
1090
1091         IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid,
1092                        rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW");
1093
1094         /*
1095          * Check if rssi is good enough for reduced Tx power, but not in loose
1096          * scheme.
1097          */
1098         if (rssi_event == RSSI_EVENT_LOW || mvm->cfg->bt_shared_single_ant ||
1099             iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT)
1100                 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id,
1101                                                   false);
1102         else
1103                 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true);
1104
1105         if (ret)
1106                 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n");
1107
1108         ieee80211_iterate_active_interfaces_atomic(
1109                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1110                 iwl_mvm_bt_rssi_iterator, &data);
1111
1112         /*
1113          * If there are no BSS / P2P client interfaces, reduced Tx Power is
1114          * irrelevant since it is based on the RSSI coming from the beacon.
1115          * Use BT_KILL_MSK_DEFAULT in that case.
1116          */
1117         data.reduced_tx_power = data.reduced_tx_power && data.num_bss_ifaces;
1118
1119         if (iwl_mvm_bt_udpate_sw_boost(mvm, data.reduced_tx_power))
1120                 IWL_ERR(mvm, "Failed to update the ctrl_kill_msk\n");
1121 }
1122
1123 #define LINK_QUAL_AGG_TIME_LIMIT_DEF    (4000)
1124 #define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200)
1125
1126 u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm,
1127                                 struct ieee80211_sta *sta)
1128 {
1129         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1130         enum iwl_bt_coex_lut_type lut_type;
1131
1132         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
1133                 return iwl_mvm_coex_agg_time_limit_old(mvm, sta);
1134
1135         if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
1136             BT_HIGH_TRAFFIC)
1137                 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
1138 /*
1139         TODO
1140         if (mvm->last_bt_notif.ttc_enabled)
1141                 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
1142 */
1143
1144         lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
1145
1146         if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT)
1147                 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
1148
1149         /* tight coex, high bt traffic, reduce AGG time limit */
1150         return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT;
1151 }
1152
1153 bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm,
1154                                      struct ieee80211_sta *sta)
1155 {
1156         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1157         enum iwl_bt_coex_lut_type lut_type;
1158
1159         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
1160                 return iwl_mvm_coex_agg_time_limit_old(mvm, sta);
1161
1162 /*
1163         TODO
1164         if (mvm->last_bt_notif.ttc_enabled)
1165                 return true;
1166 */
1167
1168         if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
1169             BT_HIGH_TRAFFIC)
1170                 return true;
1171
1172         /*
1173          * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas
1174          * since BT is already killed.
1175          * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while
1176          * we Tx.
1177          * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO.
1178          */
1179         lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
1180         return lut_type != BT_COEX_LOOSE_LUT;
1181 }
1182
1183 bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm)
1184 {
1185         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
1186                 return iwl_mvm_bt_coex_is_shared_ant_avail_old(mvm);
1187
1188         return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF;
1189 }
1190
1191 bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm,
1192                                     enum ieee80211_band band)
1193 {
1194         u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading);
1195
1196         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
1197                 return iwl_mvm_bt_coex_is_tpc_allowed_old(mvm, band);
1198
1199         if (band != IEEE80211_BAND_2GHZ)
1200                 return false;
1201
1202         return bt_activity >= BT_LOW_TRAFFIC;
1203 }
1204
1205 u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
1206                            struct ieee80211_tx_info *info, u8 ac)
1207 {
1208         __le16 fc = hdr->frame_control;
1209
1210         if (info->band != IEEE80211_BAND_2GHZ)
1211                 return 0;
1212
1213         if (unlikely(mvm->bt_tx_prio))
1214                 return mvm->bt_tx_prio - 1;
1215
1216         /* High prio packet (wrt. BT coex) if it is EAPOL, MCAST or MGMT */
1217         if (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO ||
1218              is_multicast_ether_addr(hdr->addr1) ||
1219              ieee80211_is_ctl(fc) || ieee80211_is_mgmt(fc) ||
1220              ieee80211_is_nullfunc(fc) || ieee80211_is_qos_nullfunc(fc))
1221                 return 3;
1222
1223         switch (ac) {
1224         case IEEE80211_AC_BE:
1225                 return 1;
1226         case IEEE80211_AC_VO:
1227                 return 3;
1228         case IEEE80211_AC_VI:
1229                 return 2;
1230         default:
1231                 break;
1232         }
1233
1234         return 0;
1235 }
1236
1237 void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm)
1238 {
1239         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT)) {
1240                 iwl_mvm_bt_coex_vif_change_old(mvm);
1241                 return;
1242         }
1243
1244         iwl_mvm_bt_coex_notif_handle(mvm);
1245 }
1246
1247 int iwl_mvm_rx_ant_coupling_notif(struct iwl_mvm *mvm,
1248                                   struct iwl_rx_cmd_buffer *rxb,
1249                                   struct iwl_device_cmd *dev_cmd)
1250 {
1251         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1252         u32 ant_isolation = le32_to_cpup((void *)pkt->data);
1253         u8 __maybe_unused lower_bound, upper_bound;
1254         int ret;
1255         u8 lut;
1256
1257         struct iwl_bt_coex_cmd_old *bt_cmd;
1258         struct iwl_host_cmd cmd = {
1259                 .id = BT_CONFIG,
1260                 .len = { sizeof(*bt_cmd), },
1261                 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
1262         };
1263
1264         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
1265                 return iwl_mvm_rx_ant_coupling_notif_old(mvm, rxb, dev_cmd);
1266
1267         /* TODO */
1268         return 0;
1269
1270         if (!IWL_MVM_BT_COEX_CORUNNING)
1271                 return 0;
1272
1273         lockdep_assert_held(&mvm->mutex);
1274
1275         /* Ignore updates if we are in force mode */
1276         if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
1277                 return 0;
1278
1279         if (ant_isolation ==  mvm->last_ant_isol)
1280                 return 0;
1281
1282         for (lut = 0; lut < ARRAY_SIZE(antenna_coupling_ranges) - 1; lut++)
1283                 if (ant_isolation < antenna_coupling_ranges[lut + 1].range)
1284                         break;
1285
1286         lower_bound = antenna_coupling_ranges[lut].range;
1287
1288         if (lut < ARRAY_SIZE(antenna_coupling_ranges) - 1)
1289                 upper_bound = antenna_coupling_ranges[lut + 1].range;
1290         else
1291                 upper_bound = antenna_coupling_ranges[lut].range;
1292
1293         IWL_DEBUG_COEX(mvm, "Antenna isolation=%d in range [%d,%d[, lut=%d\n",
1294                        ant_isolation, lower_bound, upper_bound, lut);
1295
1296         mvm->last_ant_isol = ant_isolation;
1297
1298         if (mvm->last_corun_lut == lut)
1299                 return 0;
1300
1301         mvm->last_corun_lut = lut;
1302
1303         bt_cmd = kzalloc(sizeof(*bt_cmd), GFP_KERNEL);
1304         if (!bt_cmd)
1305                 return 0;
1306         cmd.data[0] = bt_cmd;
1307
1308         bt_cmd->flags = cpu_to_le32(BT_COEX_NW_OLD);
1309         bt_cmd->valid_bit_msk |= cpu_to_le32(BT_VALID_ENABLE |
1310                                              BT_VALID_CORUN_LUT_20 |
1311                                              BT_VALID_CORUN_LUT_40);
1312
1313         /* For the moment, use the same LUT for 20GHz and 40GHz */
1314         memcpy(bt_cmd->bt4_corun_lut20, antenna_coupling_ranges[lut].lut20,
1315                sizeof(bt_cmd->bt4_corun_lut20));
1316
1317         memcpy(bt_cmd->bt4_corun_lut40, antenna_coupling_ranges[lut].lut20,
1318                sizeof(bt_cmd->bt4_corun_lut40));
1319
1320         ret = iwl_mvm_send_cmd(mvm, &cmd);
1321
1322         kfree(bt_cmd);
1323         return ret;
1324 }