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         bt_cmd->enabled_modules |= cpu_to_le32(BT_COEX_HIGH_BAND_RET);
 591
 592         if (mvm->cfg->bt_shared_single_ant)
 593                 memcpy(&bt_cmd->decision_lut, iwl_single_shared_ant,
 594                        sizeof(iwl_single_shared_ant));
 595         else
 596                 memcpy(&bt_cmd->decision_lut, iwl_combined_lookup,
 597                        sizeof(iwl_combined_lookup));
 598
 599         memcpy(&bt_cmd->mplut_prio_boost, iwl_bt_prio_boost,
 600                sizeof(iwl_bt_prio_boost));
 601         memcpy(&bt_cmd->multiprio_lut, iwl_bt_mprio_lut,
 602                sizeof(iwl_bt_mprio_lut));
 603
 604 send_cmd:
 605         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 606         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
 607
 608         ret = iwl_mvm_send_cmd(mvm, &cmd);
 609
 610         kfree(bt_cmd);
 611         return ret;
 612 }
 613
 614 static int iwl_mvm_bt_udpate_sw_boost(struct iwl_mvm *mvm,
 615                                       bool reduced_tx_power)
 616 {
 617         enum iwl_bt_kill_msk bt_kill_msk;
 618         struct iwl_bt_coex_sw_boost_update_cmd cmd = {};
 619         struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif;
 620
 621         lockdep_assert_held(&mvm->mutex);
 622
 623         if (reduced_tx_power) {
 624                 /* Reduced Tx power has precedence on the type of the profile */
 625                 bt_kill_msk = BT_KILL_MSK_REDUCED_TXPOW;
 626         } else {
 627                 /* Low latency BT profile is active: give higher prio to BT */
 628                 if (BT_MBOX_MSG(notif, 3, SCO_STATE)  ||
 629                     BT_MBOX_MSG(notif, 3, A2DP_STATE) ||
 630                     BT_MBOX_MSG(notif, 3, SNIFF_STATE))
 631                         bt_kill_msk = BT_KILL_MSK_SCO_HID_A2DP;
 632                 else
 633                         bt_kill_msk = BT_KILL_MSK_DEFAULT;
 634         }
 635
 636         IWL_DEBUG_COEX(mvm,
 637                        "Update kill_msk: %d - SCO %sactive A2DP %sactive SNIFF %sactive\n",
 638                        bt_kill_msk,
 639                        BT_MBOX_MSG(notif, 3, SCO_STATE) ? "" : "in",
 640                        BT_MBOX_MSG(notif, 3, A2DP_STATE) ? "" : "in",
 641                        BT_MBOX_MSG(notif, 3, SNIFF_STATE) ? "" : "in");
 642
 643         /* Don't send HCMD if there is no update */
 644         if (bt_kill_msk == mvm->bt_kill_msk)
 645                 return 0;
 646
 647         mvm->bt_kill_msk = bt_kill_msk;
 648
 649         cmd.boost_values[0].kill_ack_msk =
 650                 cpu_to_le32(iwl_bt_ack_kill_msk[bt_kill_msk]);
 651         cmd.boost_values[0].kill_cts_msk =
 652                 cpu_to_le32(iwl_bt_cts_kill_msk[bt_kill_msk]);
 653
 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         cmd.boost_values[1].kill_ack_msk = cmd.boost_values[0].kill_ack_msk;
 657         cmd.boost_values[2].kill_cts_msk = cmd.boost_values[0].kill_cts_msk;
 658
 659         IWL_DEBUG_COEX(mvm, "ACK Kill msk = 0x%08x, CTS Kill msk = 0x%08x\n",
 660                        iwl_bt_ack_kill_msk[bt_kill_msk],
 661                        iwl_bt_cts_kill_msk[bt_kill_msk]);
 662
 663         return iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_SW_BOOST, 0,
 664                                     sizeof(cmd), &cmd);
 665 }
 666
 667 static int iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm *mvm, u8 sta_id,
 668                                        bool enable)
 669 {
 670         struct iwl_bt_coex_reduced_txp_update_cmd cmd = {};
 671         struct iwl_mvm_sta *mvmsta;
 672         u32 value;
 673         int ret;
 674
 675         mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);
 676         if (!mvmsta)
 677                 return 0;
 678
 679         /* nothing to do */
 680         if (mvmsta->bt_reduced_txpower == enable)
 681                 return 0;
 682
 683         value = mvmsta->sta_id;
 684
 685         if (enable)
 686                 value |= BT_REDUCED_TX_POWER_BIT;
 687
 688         IWL_DEBUG_COEX(mvm, "%sable reduced Tx Power for sta %d\n",
 689                        enable ? "en" : "dis", sta_id);
 690
 691         cmd.reduced_txp = cpu_to_le32(value);
 692         mvmsta->bt_reduced_txpower = enable;
 693
 694         ret = iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_REDUCED_TXP, CMD_ASYNC,
 695                                    sizeof(cmd), &cmd);
 696
 697         return ret;
 698 }
 699
 700 struct iwl_bt_iterator_data {
 701         struct iwl_bt_coex_profile_notif *notif;
 702         struct iwl_mvm *mvm;
 703         u32 num_bss_ifaces;
 704         bool reduced_tx_power;
 705         struct ieee80211_chanctx_conf *primary;
 706         struct ieee80211_chanctx_conf *secondary;
 707         bool primary_ll;
 708 };
 709
 710 static inline
 711 void iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm *mvm,
 712                                        struct ieee80211_vif *vif,
 713                                        bool enable, int rssi)
 714 {
 715         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 716
 717         mvmvif->bf_data.last_bt_coex_event = rssi;
 718         mvmvif->bf_data.bt_coex_max_thold =
 719                 enable ? -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH : 0;
 720         mvmvif->bf_data.bt_coex_min_thold =
 721                 enable ? -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH : 0;
 722 }
 723
 724 /* must be called under rcu_read_lock */
 725 static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac,
 726                                       struct ieee80211_vif *vif)
 727 {
 728         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 729         struct iwl_bt_iterator_data *data = _data;
 730         struct iwl_mvm *mvm = data->mvm;
 731         struct ieee80211_chanctx_conf *chanctx_conf;
 732         enum ieee80211_smps_mode smps_mode;
 733         u32 bt_activity_grading;
 734         int ave_rssi;
 735
 736         lockdep_assert_held(&mvm->mutex);
 737
 738         switch (vif->type) {
 739         case NL80211_IFTYPE_STATION:
 740                 /* Count BSSes vifs */
 741                 data->num_bss_ifaces++;
 742                 /* default smps_mode for BSS / P2P client is AUTOMATIC */
 743                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 744                 break;
 745         case NL80211_IFTYPE_AP:
 746                 /* default smps_mode for AP / GO is OFF */
 747                 smps_mode = IEEE80211_SMPS_OFF;
 748                 if (!mvmvif->ap_ibss_active) {
 749                         iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
 750                                             smps_mode);
 751                         return;
 752                 }
 753
 754                 /* the Ack / Cts kill mask must be default if AP / GO */
 755                 data->reduced_tx_power = false;
 756                 break;
 757         default:
 758                 return;
 759         }
 760
 761         chanctx_conf = rcu_dereference(vif->chanctx_conf);
 762
 763         /* If channel context is invalid or not on 2.4GHz .. */
 764         if ((!chanctx_conf ||
 765              chanctx_conf->def.chan->band != IEEE80211_BAND_2GHZ)) {
 766                 /* ... relax constraints and disable rssi events */
 767                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
 768                                     smps_mode);
 769                 data->reduced_tx_power = false;
 770                 if (vif->type == NL80211_IFTYPE_STATION) {
 771                         iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id,
 772                                                     false);
 773                         iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
 774                 }
 775                 return;
 776         }
 777
 778         bt_activity_grading = le32_to_cpu(data->notif->bt_activity_grading);
 779         if (bt_activity_grading >= BT_HIGH_TRAFFIC)
 780                 smps_mode = IEEE80211_SMPS_STATIC;
 781         else if (bt_activity_grading >= BT_LOW_TRAFFIC)
 782                 smps_mode = vif->type == NL80211_IFTYPE_AP ?
 783                                 IEEE80211_SMPS_OFF :
 784                                 IEEE80211_SMPS_DYNAMIC;
 785
 786         /* relax SMPS contraints for next association */
 787         if (!vif->bss_conf.assoc)
 788                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 789
 790         if (IWL_COEX_IS_RRC_ON(mvm->last_bt_notif.ttc_rrc_status,
 791                                mvmvif->phy_ctxt->id))
 792                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 793
 794         IWL_DEBUG_COEX(data->mvm,
 795                        "mac %d: bt_activity_grading %d smps_req %d\n",
 796                        mvmvif->id, bt_activity_grading, smps_mode);
 797
 798         iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, smps_mode);
 799
 800         /* low latency is always primary */
 801         if (iwl_mvm_vif_low_latency(mvmvif)) {
 802                 data->primary_ll = true;
 803
 804                 data->secondary = data->primary;
 805                 data->primary = chanctx_conf;
 806         }
 807
 808         if (vif->type == NL80211_IFTYPE_AP) {
 809                 if (!mvmvif->ap_ibss_active)
 810                         return;
 811
 812                 if (chanctx_conf == data->primary)
 813                         return;
 814
 815                 if (!data->primary_ll) {
 816                         /*
 817                          * downgrade the current primary no matter what its
 818                          * type is.
 819                          */
 820                         data->secondary = data->primary;
 821                         data->primary = chanctx_conf;
 822                 } else {
 823                         /* there is low latency vif - we will be secondary */
 824                         data->secondary = chanctx_conf;
 825                 }
 826                 return;
 827         }
 828
 829         /*
 830          * STA / P2P Client, try to be primary if first vif. If we are in low
 831          * latency mode, we are already in primary and just don't do much
 832          */
 833         if (!data->primary || data->primary == chanctx_conf)
 834                 data->primary = chanctx_conf;
 835         else if (!data->secondary)
 836                 /* if secondary is not NULL, it might be a GO */
 837                 data->secondary = chanctx_conf;
 838
 839         /*
 840          * don't reduce the Tx power if one of these is true:
 841          *  we are in LOOSE
 842          *  single share antenna product
 843          *  BT is active
 844          *  we are associated
 845          */
 846         if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT ||
 847             mvm->cfg->bt_shared_single_ant || !vif->bss_conf.assoc ||
 848             le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF) {
 849                 data->reduced_tx_power = false;
 850                 iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false);
 851                 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
 852                 return;
 853         }
 854
 855         /* try to get the avg rssi from fw */
 856         ave_rssi = mvmvif->bf_data.ave_beacon_signal;
 857
 858         /* if the RSSI isn't valid, fake it is very low */
 859         if (!ave_rssi)
 860                 ave_rssi = -100;
 861         if (ave_rssi > -IWL_MVM_BT_COEX_EN_RED_TXP_THRESH) {
 862                 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true))
 863                         IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
 864
 865                 /*
 866                  * bt_kill_msk can be BT_KILL_MSK_REDUCED_TXPOW only if all the
 867                  * BSS / P2P clients have rssi above threshold.
 868                  * We set the bt_kill_msk to BT_KILL_MSK_REDUCED_TXPOW before
 869                  * the iteration, if one interface's rssi isn't good enough,
 870                  * bt_kill_msk will be set to default values.
 871                  */
 872         } else if (ave_rssi < -IWL_MVM_BT_COEX_DIS_RED_TXP_THRESH) {
 873                 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false))
 874                         IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
 875
 876                 /*
 877                  * One interface hasn't rssi above threshold, bt_kill_msk must
 878                  * be set to default values.
 879                  */
 880                 data->reduced_tx_power = false;
 881         }
 882
 883         /* Begin to monitor the RSSI: it may influence the reduced Tx power */
 884         iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi);
 885 }
 886
 887 static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm)
 888 {
 889         struct iwl_bt_iterator_data data = {
 890                 .mvm = mvm,
 891                 .notif = &mvm->last_bt_notif,
 892                 .reduced_tx_power = true,
 893         };
 894         struct iwl_bt_coex_ci_cmd cmd = {};
 895         u8 ci_bw_idx;
 896
 897         /* Ignore updates if we are in force mode */
 898         if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
 899                 return;
 900
 901         rcu_read_lock();
 902         ieee80211_iterate_active_interfaces_atomic(
 903                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 904                                         iwl_mvm_bt_notif_iterator, &data);
 905
 906         if (data.primary) {
 907                 struct ieee80211_chanctx_conf *chan = data.primary;
 908                 if (WARN_ON(!chan->def.chan)) {
 909                         rcu_read_unlock();
 910                         return;
 911                 }
 912
 913                 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
 914                         ci_bw_idx = 0;
 915                 } else {
 916                         if (chan->def.center_freq1 >
 917                             chan->def.chan->center_freq)
 918                                 ci_bw_idx = 2;
 919                         else
 920                                 ci_bw_idx = 1;
 921                 }
 922
 923                 cmd.bt_primary_ci =
 924                         iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
 925                 cmd.primary_ch_phy_id =
 926                         cpu_to_le32(*((u16 *)data.primary->drv_priv));
 927         }
 928
 929         if (data.secondary) {
 930                 struct ieee80211_chanctx_conf *chan = data.secondary;
 931                 if (WARN_ON(!data.secondary->def.chan)) {
 932                         rcu_read_unlock();
 933                         return;
 934                 }
 935
 936                 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
 937                         ci_bw_idx = 0;
 938                 } else {
 939                         if (chan->def.center_freq1 >
 940                             chan->def.chan->center_freq)
 941                                 ci_bw_idx = 2;
 942                         else
 943                                 ci_bw_idx = 1;
 944                 }
 945
 946                 cmd.bt_secondary_ci =
 947                         iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
 948                 cmd.secondary_ch_phy_id =
 949                         cpu_to_le32(*((u16 *)data.secondary->drv_priv));
 950         }
 951
 952         rcu_read_unlock();
 953
 954         /* Don't spam the fw with the same command over and over */
 955         if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) {
 956                 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, 0,
 957                                          sizeof(cmd), &cmd))
 958                         IWL_ERR(mvm, "Failed to send BT_CI cmd\n");
 959                 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd));
 960         }
 961
 962         /*
 963          * If there are no BSS / P2P client interfaces, reduced Tx Power is
 964          * irrelevant since it is based on the RSSI coming from the beacon.
 965          * Use BT_KILL_MSK_DEFAULT in that case.
 966          */
 967         data.reduced_tx_power = data.reduced_tx_power && data.num_bss_ifaces;
 968
 969         if (iwl_mvm_bt_udpate_sw_boost(mvm, data.reduced_tx_power))
 970                 IWL_ERR(mvm, "Failed to update the ctrl_kill_msk\n");
 971 }
 972
 973 int iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm,
 974                              struct iwl_rx_cmd_buffer *rxb,
 975                              struct iwl_device_cmd *dev_cmd)
 976 {
 977         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 978         struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data;
 979
 980         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
 981                 return iwl_mvm_rx_bt_coex_notif_old(mvm, rxb, dev_cmd);
 982
 983         IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n");
 984         IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance);
 985         IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n",
 986                        le32_to_cpu(notif->primary_ch_lut));
 987         IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n",
 988                        le32_to_cpu(notif->secondary_ch_lut));
 989         IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n",
 990                        le32_to_cpu(notif->bt_activity_grading));
 991
 992         /* remember this notification for future use: rssi fluctuations */
 993         memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif));
 994
 995         iwl_mvm_bt_coex_notif_handle(mvm);
 996
 997         /*
 998          * This is an async handler for a notification, returning anything other
 999          * than 0 doesn't make sense even if HCMD failed.
1000          */
1001         return 0;
1002 }
1003
1004 static void iwl_mvm_bt_rssi_iterator(void *_data, u8 *mac,
1005                                    struct ieee80211_vif *vif)
1006 {
1007         struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv;
1008         struct iwl_bt_iterator_data *data = _data;
1009         struct iwl_mvm *mvm = data->mvm;
1010
1011         struct ieee80211_sta *sta;
1012         struct iwl_mvm_sta *mvmsta;
1013
1014         struct ieee80211_chanctx_conf *chanctx_conf;
1015
1016         rcu_read_lock();
1017         chanctx_conf = rcu_dereference(vif->chanctx_conf);
1018         /* If channel context is invalid or not on 2.4GHz - don't count it */
1019         if (!chanctx_conf ||
1020             chanctx_conf->def.chan->band != IEEE80211_BAND_2GHZ) {
1021                 rcu_read_unlock();
1022                 return;
1023         }
1024         rcu_read_unlock();
1025
1026         if (vif->type != NL80211_IFTYPE_STATION ||
1027             mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)
1028                 return;
1029
1030         sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1031                                         lockdep_is_held(&mvm->mutex));
1032
1033         /* This can happen if the station has been removed right now */
1034         if (IS_ERR_OR_NULL(sta))
1035                 return;
1036
1037         mvmsta = iwl_mvm_sta_from_mac80211(sta);
1038
1039         data->num_bss_ifaces++;
1040
1041         /*
1042          * This interface doesn't support reduced Tx power (because of low
1043          * RSSI probably), then set bt_kill_msk to default values.
1044          */
1045         if (!mvmsta->bt_reduced_txpower)
1046                 data->reduced_tx_power = false;
1047         /* else - possibly leave it to BT_KILL_MSK_REDUCED_TXPOW */
1048 }
1049
1050 void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1051                            enum ieee80211_rssi_event rssi_event)
1052 {
1053         struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv;
1054         struct iwl_bt_iterator_data data = {
1055                 .mvm = mvm,
1056                 .reduced_tx_power = true,
1057         };
1058         int ret;
1059
1060         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT)) {
1061                 iwl_mvm_bt_rssi_event_old(mvm, vif, rssi_event);
1062                 return;
1063         }
1064
1065         lockdep_assert_held(&mvm->mutex);
1066
1067         /* Ignore updates if we are in force mode */
1068         if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
1069                 return;
1070
1071         /*
1072          * Rssi update while not associated - can happen since the statistics
1073          * are handled asynchronously
1074          */
1075         if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)
1076                 return;
1077
1078         /* No BT - reports should be disabled */
1079         if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF)
1080                 return;
1081
1082         IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid,
1083                        rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW");
1084
1085         /*
1086          * Check if rssi is good enough for reduced Tx power, but not in loose
1087          * scheme.
1088          */
1089         if (rssi_event == RSSI_EVENT_LOW || mvm->cfg->bt_shared_single_ant ||
1090             iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT)
1091                 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id,
1092                                                   false);
1093         else
1094                 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true);
1095
1096         if (ret)
1097                 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n");
1098
1099         ieee80211_iterate_active_interfaces_atomic(
1100                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1101                 iwl_mvm_bt_rssi_iterator, &data);
1102
1103         /*
1104          * If there are no BSS / P2P client interfaces, reduced Tx Power is
1105          * irrelevant since it is based on the RSSI coming from the beacon.
1106          * Use BT_KILL_MSK_DEFAULT in that case.
1107          */
1108         data.reduced_tx_power = data.reduced_tx_power && data.num_bss_ifaces;
1109
1110         if (iwl_mvm_bt_udpate_sw_boost(mvm, data.reduced_tx_power))
1111                 IWL_ERR(mvm, "Failed to update the ctrl_kill_msk\n");
1112 }
1113
1114 #define LINK_QUAL_AGG_TIME_LIMIT_DEF    (4000)
1115 #define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200)
1116
1117 u16 iwl_mvm_coex_agg_time_limit(struct iwl_mvm *mvm,
1118                                 struct ieee80211_sta *sta)
1119 {
1120         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1121         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
1122         struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->phy_ctxt;
1123         enum iwl_bt_coex_lut_type lut_type;
1124
1125         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
1126                 return iwl_mvm_coex_agg_time_limit_old(mvm, sta);
1127
1128         if (IWL_COEX_IS_TTC_ON(mvm->last_bt_notif.ttc_rrc_status, phy_ctxt->id))
1129                 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
1130
1131         if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
1132             BT_HIGH_TRAFFIC)
1133                 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
1134
1135         lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
1136
1137         if (lut_type == BT_COEX_LOOSE_LUT || lut_type == BT_COEX_INVALID_LUT)
1138                 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
1139
1140         /* tight coex, high bt traffic, reduce AGG time limit */
1141         return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT;
1142 }
1143
1144 bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm,
1145                                      struct ieee80211_sta *sta)
1146 {
1147         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1148         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
1149         struct iwl_mvm_phy_ctxt *phy_ctxt = mvmvif->phy_ctxt;
1150         enum iwl_bt_coex_lut_type lut_type;
1151
1152         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
1153                 return iwl_mvm_coex_agg_time_limit_old(mvm, sta);
1154
1155         if (IWL_COEX_IS_TTC_ON(mvm->last_bt_notif.ttc_rrc_status, phy_ctxt->id))
1156                 return true;
1157
1158         if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
1159             BT_HIGH_TRAFFIC)
1160                 return true;
1161
1162         /*
1163          * In Tight / TxTxDis, BT can't Rx while we Tx, so use both antennas
1164          * since BT is already killed.
1165          * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while
1166          * we Tx.
1167          * When we are in 5GHz, we'll get BT_COEX_INVALID_LUT allowing MIMO.
1168          */
1169         lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
1170         return lut_type != BT_COEX_LOOSE_LUT;
1171 }
1172
1173 bool iwl_mvm_bt_coex_is_shared_ant_avail(struct iwl_mvm *mvm)
1174 {
1175         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
1176                 return iwl_mvm_bt_coex_is_shared_ant_avail_old(mvm);
1177
1178         return le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) == BT_OFF;
1179 }
1180
1181 bool iwl_mvm_bt_coex_is_tpc_allowed(struct iwl_mvm *mvm,
1182                                     enum ieee80211_band band)
1183 {
1184         u32 bt_activity = le32_to_cpu(mvm->last_bt_notif.bt_activity_grading);
1185
1186         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
1187                 return iwl_mvm_bt_coex_is_tpc_allowed_old(mvm, band);
1188
1189         if (band != IEEE80211_BAND_2GHZ)
1190                 return false;
1191
1192         return bt_activity >= BT_LOW_TRAFFIC;
1193 }
1194
1195 u8 iwl_mvm_bt_coex_tx_prio(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
1196                            struct ieee80211_tx_info *info, u8 ac)
1197 {
1198         __le16 fc = hdr->frame_control;
1199
1200         if (info->band != IEEE80211_BAND_2GHZ)
1201                 return 0;
1202
1203         if (unlikely(mvm->bt_tx_prio))
1204                 return mvm->bt_tx_prio - 1;
1205
1206         /* High prio packet (wrt. BT coex) if it is EAPOL, MCAST or MGMT */
1207         if (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO ||
1208              is_multicast_ether_addr(hdr->addr1) ||
1209              ieee80211_is_ctl(fc) || ieee80211_is_mgmt(fc) ||
1210              ieee80211_is_nullfunc(fc) || ieee80211_is_qos_nullfunc(fc))
1211                 return 3;
1212
1213         switch (ac) {
1214         case IEEE80211_AC_BE:
1215                 return 1;
1216         case IEEE80211_AC_VO:
1217                 return 3;
1218         case IEEE80211_AC_VI:
1219                 return 2;
1220         default:
1221                 break;
1222         }
1223
1224         return 0;
1225 }
1226
1227 void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm)
1228 {
1229         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT)) {
1230                 iwl_mvm_bt_coex_vif_change_old(mvm);
1231                 return;
1232         }
1233
1234         iwl_mvm_bt_coex_notif_handle(mvm);
1235 }
1236
1237 int iwl_mvm_rx_ant_coupling_notif(struct iwl_mvm *mvm,
1238                                   struct iwl_rx_cmd_buffer *rxb,
1239                                   struct iwl_device_cmd *dev_cmd)
1240 {
1241         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1242         u32 ant_isolation = le32_to_cpup((void *)pkt->data);
1243         struct iwl_bt_coex_corun_lut_update_cmd cmd = {};
1244         u8 __maybe_unused lower_bound, upper_bound;
1245         u8 lut;
1246
1247         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BT_COEX_SPLIT))
1248                 return iwl_mvm_rx_ant_coupling_notif_old(mvm, rxb, dev_cmd);
1249
1250         if (!IWL_MVM_BT_COEX_CORUNNING)
1251                 return 0;
1252
1253         lockdep_assert_held(&mvm->mutex);
1254
1255         /* Ignore updates if we are in force mode */
1256         if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
1257                 return 0;
1258
1259         if (ant_isolation ==  mvm->last_ant_isol)
1260                 return 0;
1261
1262         for (lut = 0; lut < ARRAY_SIZE(antenna_coupling_ranges) - 1; lut++)
1263                 if (ant_isolation < antenna_coupling_ranges[lut + 1].range)
1264                         break;
1265
1266         lower_bound = antenna_coupling_ranges[lut].range;
1267
1268         if (lut < ARRAY_SIZE(antenna_coupling_ranges) - 1)
1269                 upper_bound = antenna_coupling_ranges[lut + 1].range;
1270         else
1271                 upper_bound = antenna_coupling_ranges[lut].range;
1272
1273         IWL_DEBUG_COEX(mvm, "Antenna isolation=%d in range [%d,%d[, lut=%d\n",
1274                        ant_isolation, lower_bound, upper_bound, lut);
1275
1276         mvm->last_ant_isol = ant_isolation;
1277
1278         if (mvm->last_corun_lut == lut)
1279                 return 0;
1280
1281         mvm->last_corun_lut = lut;
1282
1283         /* For the moment, use the same LUT for 20GHz and 40GHz */
1284         memcpy(&cmd.corun_lut20, antenna_coupling_ranges[lut].lut20,
1285                sizeof(cmd.corun_lut20));
1286
1287         memcpy(&cmd.corun_lut40, antenna_coupling_ranges[lut].lut20,
1288                sizeof(cmd.corun_lut40));
1289
1290         return iwl_mvm_send_cmd_pdu(mvm, BT_COEX_UPDATE_CORUN_LUT, 0,
1291                                     sizeof(cmd), &cmd);
1292 }