1 // SPDX-License-Identifier: GPL-2.0 OR MIT 2 /* 3 * Copyright 2015-2022 Advanced Micro Devices, Inc. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be included in 13 * all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 21 * OTHER DEALINGS IN THE SOFTWARE. 22 */ 23 24 #include <linux/pci.h> 25 #include <linux/acpi.h> 26 #include "kfd_crat.h" 27 #include "kfd_priv.h" 28 #include "kfd_topology.h" 29 #include "kfd_iommu.h" 30 #include "amdgpu.h" 31 #include "amdgpu_amdkfd.h" 32 33 /* GPU Processor ID base for dGPUs for which VCRAT needs to be created. 34 * GPU processor ID are expressed with Bit[31]=1. 35 * The base is set to 0x8000_0000 + 0x1000 to avoid collision with GPU IDs 36 * used in the CRAT. 37 */ 38 static uint32_t gpu_processor_id_low = 0x80001000; 39 40 /* Return the next available gpu_processor_id and increment it for next GPU 41 * @total_cu_count - Total CUs present in the GPU including ones 42 * masked off 43 */ 44 static inline unsigned int get_and_inc_gpu_processor_id( 45 unsigned int total_cu_count) 46 { 47 int current_id = gpu_processor_id_low; 48 49 gpu_processor_id_low += total_cu_count; 50 return current_id; 51 } 52 53 /* Static table to describe GPU Cache information */ 54 struct kfd_gpu_cache_info { 55 uint32_t cache_size; 56 uint32_t cache_level; 57 uint32_t flags; 58 /* Indicates how many Compute Units share this cache 59 * within a SA. Value = 1 indicates the cache is not shared 60 */ 61 uint32_t num_cu_shared; 62 }; 63 64 static struct kfd_gpu_cache_info kaveri_cache_info[] = { 65 { 66 /* TCP L1 Cache per CU */ 67 .cache_size = 16, 68 .cache_level = 1, 69 .flags = (CRAT_CACHE_FLAGS_ENABLED | 70 CRAT_CACHE_FLAGS_DATA_CACHE | 71 CRAT_CACHE_FLAGS_SIMD_CACHE), 72 .num_cu_shared = 1, 73 }, 74 { 75 /* Scalar L1 Instruction Cache (in SQC module) per bank */ 76 .cache_size = 16, 77 .cache_level = 1, 78 .flags = (CRAT_CACHE_FLAGS_ENABLED | 79 CRAT_CACHE_FLAGS_INST_CACHE | 80 CRAT_CACHE_FLAGS_SIMD_CACHE), 81 .num_cu_shared = 2, 82 }, 83 { 84 /* Scalar L1 Data Cache (in SQC module) per bank */ 85 .cache_size = 8, 86 .cache_level = 1, 87 .flags = (CRAT_CACHE_FLAGS_ENABLED | 88 CRAT_CACHE_FLAGS_DATA_CACHE | 89 CRAT_CACHE_FLAGS_SIMD_CACHE), 90 .num_cu_shared = 2, 91 }, 92 93 /* TODO: Add L2 Cache information */ 94 }; 95 96 97 static struct kfd_gpu_cache_info carrizo_cache_info[] = { 98 { 99 /* TCP L1 Cache per CU */ 100 .cache_size = 16, 101 .cache_level = 1, 102 .flags = (CRAT_CACHE_FLAGS_ENABLED | 103 CRAT_CACHE_FLAGS_DATA_CACHE | 104 CRAT_CACHE_FLAGS_SIMD_CACHE), 105 .num_cu_shared = 1, 106 }, 107 { 108 /* Scalar L1 Instruction Cache (in SQC module) per bank */ 109 .cache_size = 8, 110 .cache_level = 1, 111 .flags = (CRAT_CACHE_FLAGS_ENABLED | 112 CRAT_CACHE_FLAGS_INST_CACHE | 113 CRAT_CACHE_FLAGS_SIMD_CACHE), 114 .num_cu_shared = 4, 115 }, 116 { 117 /* Scalar L1 Data Cache (in SQC module) per bank. */ 118 .cache_size = 4, 119 .cache_level = 1, 120 .flags = (CRAT_CACHE_FLAGS_ENABLED | 121 CRAT_CACHE_FLAGS_DATA_CACHE | 122 CRAT_CACHE_FLAGS_SIMD_CACHE), 123 .num_cu_shared = 4, 124 }, 125 126 /* TODO: Add L2 Cache information */ 127 }; 128 129 #define hawaii_cache_info kaveri_cache_info 130 #define tonga_cache_info carrizo_cache_info 131 #define fiji_cache_info carrizo_cache_info 132 #define polaris10_cache_info carrizo_cache_info 133 #define polaris11_cache_info carrizo_cache_info 134 #define polaris12_cache_info carrizo_cache_info 135 #define vegam_cache_info carrizo_cache_info 136 137 /* NOTE: L1 cache information has been updated and L2/L3 138 * cache information has been added for Vega10 and 139 * newer ASICs. The unit for cache_size is KiB. 140 * In future, check & update cache details 141 * for every new ASIC is required. 142 */ 143 144 static struct kfd_gpu_cache_info vega10_cache_info[] = { 145 { 146 /* TCP L1 Cache per CU */ 147 .cache_size = 16, 148 .cache_level = 1, 149 .flags = (CRAT_CACHE_FLAGS_ENABLED | 150 CRAT_CACHE_FLAGS_DATA_CACHE | 151 CRAT_CACHE_FLAGS_SIMD_CACHE), 152 .num_cu_shared = 1, 153 }, 154 { 155 /* Scalar L1 Instruction Cache per SQC */ 156 .cache_size = 32, 157 .cache_level = 1, 158 .flags = (CRAT_CACHE_FLAGS_ENABLED | 159 CRAT_CACHE_FLAGS_INST_CACHE | 160 CRAT_CACHE_FLAGS_SIMD_CACHE), 161 .num_cu_shared = 3, 162 }, 163 { 164 /* Scalar L1 Data Cache per SQC */ 165 .cache_size = 16, 166 .cache_level = 1, 167 .flags = (CRAT_CACHE_FLAGS_ENABLED | 168 CRAT_CACHE_FLAGS_DATA_CACHE | 169 CRAT_CACHE_FLAGS_SIMD_CACHE), 170 .num_cu_shared = 3, 171 }, 172 { 173 /* L2 Data Cache per GPU (Total Tex Cache) */ 174 .cache_size = 4096, 175 .cache_level = 2, 176 .flags = (CRAT_CACHE_FLAGS_ENABLED | 177 CRAT_CACHE_FLAGS_DATA_CACHE | 178 CRAT_CACHE_FLAGS_SIMD_CACHE), 179 .num_cu_shared = 16, 180 }, 181 }; 182 183 static struct kfd_gpu_cache_info raven_cache_info[] = { 184 { 185 /* TCP L1 Cache per CU */ 186 .cache_size = 16, 187 .cache_level = 1, 188 .flags = (CRAT_CACHE_FLAGS_ENABLED | 189 CRAT_CACHE_FLAGS_DATA_CACHE | 190 CRAT_CACHE_FLAGS_SIMD_CACHE), 191 .num_cu_shared = 1, 192 }, 193 { 194 /* Scalar L1 Instruction Cache per SQC */ 195 .cache_size = 32, 196 .cache_level = 1, 197 .flags = (CRAT_CACHE_FLAGS_ENABLED | 198 CRAT_CACHE_FLAGS_INST_CACHE | 199 CRAT_CACHE_FLAGS_SIMD_CACHE), 200 .num_cu_shared = 3, 201 }, 202 { 203 /* Scalar L1 Data Cache per SQC */ 204 .cache_size = 16, 205 .cache_level = 1, 206 .flags = (CRAT_CACHE_FLAGS_ENABLED | 207 CRAT_CACHE_FLAGS_DATA_CACHE | 208 CRAT_CACHE_FLAGS_SIMD_CACHE), 209 .num_cu_shared = 3, 210 }, 211 { 212 /* L2 Data Cache per GPU (Total Tex Cache) */ 213 .cache_size = 1024, 214 .cache_level = 2, 215 .flags = (CRAT_CACHE_FLAGS_ENABLED | 216 CRAT_CACHE_FLAGS_DATA_CACHE | 217 CRAT_CACHE_FLAGS_SIMD_CACHE), 218 .num_cu_shared = 11, 219 }, 220 }; 221 222 static struct kfd_gpu_cache_info renoir_cache_info[] = { 223 { 224 /* TCP L1 Cache per CU */ 225 .cache_size = 16, 226 .cache_level = 1, 227 .flags = (CRAT_CACHE_FLAGS_ENABLED | 228 CRAT_CACHE_FLAGS_DATA_CACHE | 229 CRAT_CACHE_FLAGS_SIMD_CACHE), 230 .num_cu_shared = 1, 231 }, 232 { 233 /* Scalar L1 Instruction Cache per SQC */ 234 .cache_size = 32, 235 .cache_level = 1, 236 .flags = (CRAT_CACHE_FLAGS_ENABLED | 237 CRAT_CACHE_FLAGS_INST_CACHE | 238 CRAT_CACHE_FLAGS_SIMD_CACHE), 239 .num_cu_shared = 3, 240 }, 241 { 242 /* Scalar L1 Data Cache per SQC */ 243 .cache_size = 16, 244 .cache_level = 1, 245 .flags = (CRAT_CACHE_FLAGS_ENABLED | 246 CRAT_CACHE_FLAGS_DATA_CACHE | 247 CRAT_CACHE_FLAGS_SIMD_CACHE), 248 .num_cu_shared = 3, 249 }, 250 { 251 /* L2 Data Cache per GPU (Total Tex Cache) */ 252 .cache_size = 1024, 253 .cache_level = 2, 254 .flags = (CRAT_CACHE_FLAGS_ENABLED | 255 CRAT_CACHE_FLAGS_DATA_CACHE | 256 CRAT_CACHE_FLAGS_SIMD_CACHE), 257 .num_cu_shared = 8, 258 }, 259 }; 260 261 static struct kfd_gpu_cache_info vega12_cache_info[] = { 262 { 263 /* TCP L1 Cache per CU */ 264 .cache_size = 16, 265 .cache_level = 1, 266 .flags = (CRAT_CACHE_FLAGS_ENABLED | 267 CRAT_CACHE_FLAGS_DATA_CACHE | 268 CRAT_CACHE_FLAGS_SIMD_CACHE), 269 .num_cu_shared = 1, 270 }, 271 { 272 /* Scalar L1 Instruction Cache per SQC */ 273 .cache_size = 32, 274 .cache_level = 1, 275 .flags = (CRAT_CACHE_FLAGS_ENABLED | 276 CRAT_CACHE_FLAGS_INST_CACHE | 277 CRAT_CACHE_FLAGS_SIMD_CACHE), 278 .num_cu_shared = 3, 279 }, 280 { 281 /* Scalar L1 Data Cache per SQC */ 282 .cache_size = 16, 283 .cache_level = 1, 284 .flags = (CRAT_CACHE_FLAGS_ENABLED | 285 CRAT_CACHE_FLAGS_DATA_CACHE | 286 CRAT_CACHE_FLAGS_SIMD_CACHE), 287 .num_cu_shared = 3, 288 }, 289 { 290 /* L2 Data Cache per GPU (Total Tex Cache) */ 291 .cache_size = 2048, 292 .cache_level = 2, 293 .flags = (CRAT_CACHE_FLAGS_ENABLED | 294 CRAT_CACHE_FLAGS_DATA_CACHE | 295 CRAT_CACHE_FLAGS_SIMD_CACHE), 296 .num_cu_shared = 5, 297 }, 298 }; 299 300 static struct kfd_gpu_cache_info vega20_cache_info[] = { 301 { 302 /* TCP L1 Cache per CU */ 303 .cache_size = 16, 304 .cache_level = 1, 305 .flags = (CRAT_CACHE_FLAGS_ENABLED | 306 CRAT_CACHE_FLAGS_DATA_CACHE | 307 CRAT_CACHE_FLAGS_SIMD_CACHE), 308 .num_cu_shared = 1, 309 }, 310 { 311 /* Scalar L1 Instruction Cache per SQC */ 312 .cache_size = 32, 313 .cache_level = 1, 314 .flags = (CRAT_CACHE_FLAGS_ENABLED | 315 CRAT_CACHE_FLAGS_INST_CACHE | 316 CRAT_CACHE_FLAGS_SIMD_CACHE), 317 .num_cu_shared = 3, 318 }, 319 { 320 /* Scalar L1 Data Cache per SQC */ 321 .cache_size = 16, 322 .cache_level = 1, 323 .flags = (CRAT_CACHE_FLAGS_ENABLED | 324 CRAT_CACHE_FLAGS_DATA_CACHE | 325 CRAT_CACHE_FLAGS_SIMD_CACHE), 326 .num_cu_shared = 3, 327 }, 328 { 329 /* L2 Data Cache per GPU (Total Tex Cache) */ 330 .cache_size = 8192, 331 .cache_level = 2, 332 .flags = (CRAT_CACHE_FLAGS_ENABLED | 333 CRAT_CACHE_FLAGS_DATA_CACHE | 334 CRAT_CACHE_FLAGS_SIMD_CACHE), 335 .num_cu_shared = 16, 336 }, 337 }; 338 339 static struct kfd_gpu_cache_info aldebaran_cache_info[] = { 340 { 341 /* TCP L1 Cache per CU */ 342 .cache_size = 16, 343 .cache_level = 1, 344 .flags = (CRAT_CACHE_FLAGS_ENABLED | 345 CRAT_CACHE_FLAGS_DATA_CACHE | 346 CRAT_CACHE_FLAGS_SIMD_CACHE), 347 .num_cu_shared = 1, 348 }, 349 { 350 /* Scalar L1 Instruction Cache per SQC */ 351 .cache_size = 32, 352 .cache_level = 1, 353 .flags = (CRAT_CACHE_FLAGS_ENABLED | 354 CRAT_CACHE_FLAGS_INST_CACHE | 355 CRAT_CACHE_FLAGS_SIMD_CACHE), 356 .num_cu_shared = 2, 357 }, 358 { 359 /* Scalar L1 Data Cache per SQC */ 360 .cache_size = 16, 361 .cache_level = 1, 362 .flags = (CRAT_CACHE_FLAGS_ENABLED | 363 CRAT_CACHE_FLAGS_DATA_CACHE | 364 CRAT_CACHE_FLAGS_SIMD_CACHE), 365 .num_cu_shared = 2, 366 }, 367 { 368 /* L2 Data Cache per GPU (Total Tex Cache) */ 369 .cache_size = 8192, 370 .cache_level = 2, 371 .flags = (CRAT_CACHE_FLAGS_ENABLED | 372 CRAT_CACHE_FLAGS_DATA_CACHE | 373 CRAT_CACHE_FLAGS_SIMD_CACHE), 374 .num_cu_shared = 14, 375 }, 376 }; 377 378 static struct kfd_gpu_cache_info navi10_cache_info[] = { 379 { 380 /* TCP L1 Cache per CU */ 381 .cache_size = 16, 382 .cache_level = 1, 383 .flags = (CRAT_CACHE_FLAGS_ENABLED | 384 CRAT_CACHE_FLAGS_DATA_CACHE | 385 CRAT_CACHE_FLAGS_SIMD_CACHE), 386 .num_cu_shared = 1, 387 }, 388 { 389 /* Scalar L1 Instruction Cache per SQC */ 390 .cache_size = 32, 391 .cache_level = 1, 392 .flags = (CRAT_CACHE_FLAGS_ENABLED | 393 CRAT_CACHE_FLAGS_INST_CACHE | 394 CRAT_CACHE_FLAGS_SIMD_CACHE), 395 .num_cu_shared = 2, 396 }, 397 { 398 /* Scalar L1 Data Cache per SQC */ 399 .cache_size = 16, 400 .cache_level = 1, 401 .flags = (CRAT_CACHE_FLAGS_ENABLED | 402 CRAT_CACHE_FLAGS_DATA_CACHE | 403 CRAT_CACHE_FLAGS_SIMD_CACHE), 404 .num_cu_shared = 2, 405 }, 406 { 407 /* GL1 Data Cache per SA */ 408 .cache_size = 128, 409 .cache_level = 1, 410 .flags = (CRAT_CACHE_FLAGS_ENABLED | 411 CRAT_CACHE_FLAGS_DATA_CACHE | 412 CRAT_CACHE_FLAGS_SIMD_CACHE), 413 .num_cu_shared = 10, 414 }, 415 { 416 /* L2 Data Cache per GPU (Total Tex Cache) */ 417 .cache_size = 4096, 418 .cache_level = 2, 419 .flags = (CRAT_CACHE_FLAGS_ENABLED | 420 CRAT_CACHE_FLAGS_DATA_CACHE | 421 CRAT_CACHE_FLAGS_SIMD_CACHE), 422 .num_cu_shared = 10, 423 }, 424 }; 425 426 static struct kfd_gpu_cache_info vangogh_cache_info[] = { 427 { 428 /* TCP L1 Cache per CU */ 429 .cache_size = 16, 430 .cache_level = 1, 431 .flags = (CRAT_CACHE_FLAGS_ENABLED | 432 CRAT_CACHE_FLAGS_DATA_CACHE | 433 CRAT_CACHE_FLAGS_SIMD_CACHE), 434 .num_cu_shared = 1, 435 }, 436 { 437 /* Scalar L1 Instruction Cache per SQC */ 438 .cache_size = 32, 439 .cache_level = 1, 440 .flags = (CRAT_CACHE_FLAGS_ENABLED | 441 CRAT_CACHE_FLAGS_INST_CACHE | 442 CRAT_CACHE_FLAGS_SIMD_CACHE), 443 .num_cu_shared = 2, 444 }, 445 { 446 /* Scalar L1 Data Cache per SQC */ 447 .cache_size = 16, 448 .cache_level = 1, 449 .flags = (CRAT_CACHE_FLAGS_ENABLED | 450 CRAT_CACHE_FLAGS_DATA_CACHE | 451 CRAT_CACHE_FLAGS_SIMD_CACHE), 452 .num_cu_shared = 2, 453 }, 454 { 455 /* GL1 Data Cache per SA */ 456 .cache_size = 128, 457 .cache_level = 1, 458 .flags = (CRAT_CACHE_FLAGS_ENABLED | 459 CRAT_CACHE_FLAGS_DATA_CACHE | 460 CRAT_CACHE_FLAGS_SIMD_CACHE), 461 .num_cu_shared = 8, 462 }, 463 { 464 /* L2 Data Cache per GPU (Total Tex Cache) */ 465 .cache_size = 1024, 466 .cache_level = 2, 467 .flags = (CRAT_CACHE_FLAGS_ENABLED | 468 CRAT_CACHE_FLAGS_DATA_CACHE | 469 CRAT_CACHE_FLAGS_SIMD_CACHE), 470 .num_cu_shared = 8, 471 }, 472 }; 473 474 static struct kfd_gpu_cache_info navi14_cache_info[] = { 475 { 476 /* TCP L1 Cache per CU */ 477 .cache_size = 16, 478 .cache_level = 1, 479 .flags = (CRAT_CACHE_FLAGS_ENABLED | 480 CRAT_CACHE_FLAGS_DATA_CACHE | 481 CRAT_CACHE_FLAGS_SIMD_CACHE), 482 .num_cu_shared = 1, 483 }, 484 { 485 /* Scalar L1 Instruction Cache per SQC */ 486 .cache_size = 32, 487 .cache_level = 1, 488 .flags = (CRAT_CACHE_FLAGS_ENABLED | 489 CRAT_CACHE_FLAGS_INST_CACHE | 490 CRAT_CACHE_FLAGS_SIMD_CACHE), 491 .num_cu_shared = 2, 492 }, 493 { 494 /* Scalar L1 Data Cache per SQC */ 495 .cache_size = 16, 496 .cache_level = 1, 497 .flags = (CRAT_CACHE_FLAGS_ENABLED | 498 CRAT_CACHE_FLAGS_DATA_CACHE | 499 CRAT_CACHE_FLAGS_SIMD_CACHE), 500 .num_cu_shared = 2, 501 }, 502 { 503 /* GL1 Data Cache per SA */ 504 .cache_size = 128, 505 .cache_level = 1, 506 .flags = (CRAT_CACHE_FLAGS_ENABLED | 507 CRAT_CACHE_FLAGS_DATA_CACHE | 508 CRAT_CACHE_FLAGS_SIMD_CACHE), 509 .num_cu_shared = 12, 510 }, 511 { 512 /* L2 Data Cache per GPU (Total Tex Cache) */ 513 .cache_size = 2048, 514 .cache_level = 2, 515 .flags = (CRAT_CACHE_FLAGS_ENABLED | 516 CRAT_CACHE_FLAGS_DATA_CACHE | 517 CRAT_CACHE_FLAGS_SIMD_CACHE), 518 .num_cu_shared = 12, 519 }, 520 }; 521 522 static struct kfd_gpu_cache_info sienna_cichlid_cache_info[] = { 523 { 524 /* TCP L1 Cache per CU */ 525 .cache_size = 16, 526 .cache_level = 1, 527 .flags = (CRAT_CACHE_FLAGS_ENABLED | 528 CRAT_CACHE_FLAGS_DATA_CACHE | 529 CRAT_CACHE_FLAGS_SIMD_CACHE), 530 .num_cu_shared = 1, 531 }, 532 { 533 /* Scalar L1 Instruction Cache per SQC */ 534 .cache_size = 32, 535 .cache_level = 1, 536 .flags = (CRAT_CACHE_FLAGS_ENABLED | 537 CRAT_CACHE_FLAGS_INST_CACHE | 538 CRAT_CACHE_FLAGS_SIMD_CACHE), 539 .num_cu_shared = 2, 540 }, 541 { 542 /* Scalar L1 Data Cache per SQC */ 543 .cache_size = 16, 544 .cache_level = 1, 545 .flags = (CRAT_CACHE_FLAGS_ENABLED | 546 CRAT_CACHE_FLAGS_DATA_CACHE | 547 CRAT_CACHE_FLAGS_SIMD_CACHE), 548 .num_cu_shared = 2, 549 }, 550 { 551 /* GL1 Data Cache per SA */ 552 .cache_size = 128, 553 .cache_level = 1, 554 .flags = (CRAT_CACHE_FLAGS_ENABLED | 555 CRAT_CACHE_FLAGS_DATA_CACHE | 556 CRAT_CACHE_FLAGS_SIMD_CACHE), 557 .num_cu_shared = 10, 558 }, 559 { 560 /* L2 Data Cache per GPU (Total Tex Cache) */ 561 .cache_size = 4096, 562 .cache_level = 2, 563 .flags = (CRAT_CACHE_FLAGS_ENABLED | 564 CRAT_CACHE_FLAGS_DATA_CACHE | 565 CRAT_CACHE_FLAGS_SIMD_CACHE), 566 .num_cu_shared = 10, 567 }, 568 { 569 /* L3 Data Cache per GPU */ 570 .cache_size = 128*1024, 571 .cache_level = 3, 572 .flags = (CRAT_CACHE_FLAGS_ENABLED | 573 CRAT_CACHE_FLAGS_DATA_CACHE | 574 CRAT_CACHE_FLAGS_SIMD_CACHE), 575 .num_cu_shared = 10, 576 }, 577 }; 578 579 static struct kfd_gpu_cache_info navy_flounder_cache_info[] = { 580 { 581 /* TCP L1 Cache per CU */ 582 .cache_size = 16, 583 .cache_level = 1, 584 .flags = (CRAT_CACHE_FLAGS_ENABLED | 585 CRAT_CACHE_FLAGS_DATA_CACHE | 586 CRAT_CACHE_FLAGS_SIMD_CACHE), 587 .num_cu_shared = 1, 588 }, 589 { 590 /* Scalar L1 Instruction Cache per SQC */ 591 .cache_size = 32, 592 .cache_level = 1, 593 .flags = (CRAT_CACHE_FLAGS_ENABLED | 594 CRAT_CACHE_FLAGS_INST_CACHE | 595 CRAT_CACHE_FLAGS_SIMD_CACHE), 596 .num_cu_shared = 2, 597 }, 598 { 599 /* Scalar L1 Data Cache per SQC */ 600 .cache_size = 16, 601 .cache_level = 1, 602 .flags = (CRAT_CACHE_FLAGS_ENABLED | 603 CRAT_CACHE_FLAGS_DATA_CACHE | 604 CRAT_CACHE_FLAGS_SIMD_CACHE), 605 .num_cu_shared = 2, 606 }, 607 { 608 /* GL1 Data Cache per SA */ 609 .cache_size = 128, 610 .cache_level = 1, 611 .flags = (CRAT_CACHE_FLAGS_ENABLED | 612 CRAT_CACHE_FLAGS_DATA_CACHE | 613 CRAT_CACHE_FLAGS_SIMD_CACHE), 614 .num_cu_shared = 10, 615 }, 616 { 617 /* L2 Data Cache per GPU (Total Tex Cache) */ 618 .cache_size = 3072, 619 .cache_level = 2, 620 .flags = (CRAT_CACHE_FLAGS_ENABLED | 621 CRAT_CACHE_FLAGS_DATA_CACHE | 622 CRAT_CACHE_FLAGS_SIMD_CACHE), 623 .num_cu_shared = 10, 624 }, 625 { 626 /* L3 Data Cache per GPU */ 627 .cache_size = 96*1024, 628 .cache_level = 3, 629 .flags = (CRAT_CACHE_FLAGS_ENABLED | 630 CRAT_CACHE_FLAGS_DATA_CACHE | 631 CRAT_CACHE_FLAGS_SIMD_CACHE), 632 .num_cu_shared = 10, 633 }, 634 }; 635 636 static struct kfd_gpu_cache_info dimgrey_cavefish_cache_info[] = { 637 { 638 /* TCP L1 Cache per CU */ 639 .cache_size = 16, 640 .cache_level = 1, 641 .flags = (CRAT_CACHE_FLAGS_ENABLED | 642 CRAT_CACHE_FLAGS_DATA_CACHE | 643 CRAT_CACHE_FLAGS_SIMD_CACHE), 644 .num_cu_shared = 1, 645 }, 646 { 647 /* Scalar L1 Instruction Cache per SQC */ 648 .cache_size = 32, 649 .cache_level = 1, 650 .flags = (CRAT_CACHE_FLAGS_ENABLED | 651 CRAT_CACHE_FLAGS_INST_CACHE | 652 CRAT_CACHE_FLAGS_SIMD_CACHE), 653 .num_cu_shared = 2, 654 }, 655 { 656 /* Scalar L1 Data Cache per SQC */ 657 .cache_size = 16, 658 .cache_level = 1, 659 .flags = (CRAT_CACHE_FLAGS_ENABLED | 660 CRAT_CACHE_FLAGS_DATA_CACHE | 661 CRAT_CACHE_FLAGS_SIMD_CACHE), 662 .num_cu_shared = 2, 663 }, 664 { 665 /* GL1 Data Cache per SA */ 666 .cache_size = 128, 667 .cache_level = 1, 668 .flags = (CRAT_CACHE_FLAGS_ENABLED | 669 CRAT_CACHE_FLAGS_DATA_CACHE | 670 CRAT_CACHE_FLAGS_SIMD_CACHE), 671 .num_cu_shared = 8, 672 }, 673 { 674 /* L2 Data Cache per GPU (Total Tex Cache) */ 675 .cache_size = 2048, 676 .cache_level = 2, 677 .flags = (CRAT_CACHE_FLAGS_ENABLED | 678 CRAT_CACHE_FLAGS_DATA_CACHE | 679 CRAT_CACHE_FLAGS_SIMD_CACHE), 680 .num_cu_shared = 8, 681 }, 682 { 683 /* L3 Data Cache per GPU */ 684 .cache_size = 32*1024, 685 .cache_level = 3, 686 .flags = (CRAT_CACHE_FLAGS_ENABLED | 687 CRAT_CACHE_FLAGS_DATA_CACHE | 688 CRAT_CACHE_FLAGS_SIMD_CACHE), 689 .num_cu_shared = 8, 690 }, 691 }; 692 693 static struct kfd_gpu_cache_info beige_goby_cache_info[] = { 694 { 695 /* TCP L1 Cache per CU */ 696 .cache_size = 16, 697 .cache_level = 1, 698 .flags = (CRAT_CACHE_FLAGS_ENABLED | 699 CRAT_CACHE_FLAGS_DATA_CACHE | 700 CRAT_CACHE_FLAGS_SIMD_CACHE), 701 .num_cu_shared = 1, 702 }, 703 { 704 /* Scalar L1 Instruction Cache per SQC */ 705 .cache_size = 32, 706 .cache_level = 1, 707 .flags = (CRAT_CACHE_FLAGS_ENABLED | 708 CRAT_CACHE_FLAGS_INST_CACHE | 709 CRAT_CACHE_FLAGS_SIMD_CACHE), 710 .num_cu_shared = 2, 711 }, 712 { 713 /* Scalar L1 Data Cache per SQC */ 714 .cache_size = 16, 715 .cache_level = 1, 716 .flags = (CRAT_CACHE_FLAGS_ENABLED | 717 CRAT_CACHE_FLAGS_DATA_CACHE | 718 CRAT_CACHE_FLAGS_SIMD_CACHE), 719 .num_cu_shared = 2, 720 }, 721 { 722 /* GL1 Data Cache per SA */ 723 .cache_size = 128, 724 .cache_level = 1, 725 .flags = (CRAT_CACHE_FLAGS_ENABLED | 726 CRAT_CACHE_FLAGS_DATA_CACHE | 727 CRAT_CACHE_FLAGS_SIMD_CACHE), 728 .num_cu_shared = 8, 729 }, 730 { 731 /* L2 Data Cache per GPU (Total Tex Cache) */ 732 .cache_size = 1024, 733 .cache_level = 2, 734 .flags = (CRAT_CACHE_FLAGS_ENABLED | 735 CRAT_CACHE_FLAGS_DATA_CACHE | 736 CRAT_CACHE_FLAGS_SIMD_CACHE), 737 .num_cu_shared = 8, 738 }, 739 { 740 /* L3 Data Cache per GPU */ 741 .cache_size = 16*1024, 742 .cache_level = 3, 743 .flags = (CRAT_CACHE_FLAGS_ENABLED | 744 CRAT_CACHE_FLAGS_DATA_CACHE | 745 CRAT_CACHE_FLAGS_SIMD_CACHE), 746 .num_cu_shared = 8, 747 }, 748 }; 749 750 static struct kfd_gpu_cache_info yellow_carp_cache_info[] = { 751 { 752 /* TCP L1 Cache per CU */ 753 .cache_size = 16, 754 .cache_level = 1, 755 .flags = (CRAT_CACHE_FLAGS_ENABLED | 756 CRAT_CACHE_FLAGS_DATA_CACHE | 757 CRAT_CACHE_FLAGS_SIMD_CACHE), 758 .num_cu_shared = 1, 759 }, 760 { 761 /* Scalar L1 Instruction Cache per SQC */ 762 .cache_size = 32, 763 .cache_level = 1, 764 .flags = (CRAT_CACHE_FLAGS_ENABLED | 765 CRAT_CACHE_FLAGS_INST_CACHE | 766 CRAT_CACHE_FLAGS_SIMD_CACHE), 767 .num_cu_shared = 2, 768 }, 769 { 770 /* Scalar L1 Data Cache per SQC */ 771 .cache_size = 16, 772 .cache_level = 1, 773 .flags = (CRAT_CACHE_FLAGS_ENABLED | 774 CRAT_CACHE_FLAGS_DATA_CACHE | 775 CRAT_CACHE_FLAGS_SIMD_CACHE), 776 .num_cu_shared = 2, 777 }, 778 { 779 /* GL1 Data Cache per SA */ 780 .cache_size = 128, 781 .cache_level = 1, 782 .flags = (CRAT_CACHE_FLAGS_ENABLED | 783 CRAT_CACHE_FLAGS_DATA_CACHE | 784 CRAT_CACHE_FLAGS_SIMD_CACHE), 785 .num_cu_shared = 6, 786 }, 787 { 788 /* L2 Data Cache per GPU (Total Tex Cache) */ 789 .cache_size = 2048, 790 .cache_level = 2, 791 .flags = (CRAT_CACHE_FLAGS_ENABLED | 792 CRAT_CACHE_FLAGS_DATA_CACHE | 793 CRAT_CACHE_FLAGS_SIMD_CACHE), 794 .num_cu_shared = 6, 795 }, 796 }; 797 798 static void kfd_populated_cu_info_cpu(struct kfd_topology_device *dev, 799 struct crat_subtype_computeunit *cu) 800 { 801 dev->node_props.cpu_cores_count = cu->num_cpu_cores; 802 dev->node_props.cpu_core_id_base = cu->processor_id_low; 803 if (cu->hsa_capability & CRAT_CU_FLAGS_IOMMU_PRESENT) 804 dev->node_props.capability |= HSA_CAP_ATS_PRESENT; 805 806 pr_debug("CU CPU: cores=%d id_base=%d\n", cu->num_cpu_cores, 807 cu->processor_id_low); 808 } 809 810 static void kfd_populated_cu_info_gpu(struct kfd_topology_device *dev, 811 struct crat_subtype_computeunit *cu) 812 { 813 dev->node_props.simd_id_base = cu->processor_id_low; 814 dev->node_props.simd_count = cu->num_simd_cores; 815 dev->node_props.lds_size_in_kb = cu->lds_size_in_kb; 816 dev->node_props.max_waves_per_simd = cu->max_waves_simd; 817 dev->node_props.wave_front_size = cu->wave_front_size; 818 dev->node_props.array_count = cu->array_count; 819 dev->node_props.cu_per_simd_array = cu->num_cu_per_array; 820 dev->node_props.simd_per_cu = cu->num_simd_per_cu; 821 dev->node_props.max_slots_scratch_cu = cu->max_slots_scatch_cu; 822 if (cu->hsa_capability & CRAT_CU_FLAGS_HOT_PLUGGABLE) 823 dev->node_props.capability |= HSA_CAP_HOT_PLUGGABLE; 824 pr_debug("CU GPU: id_base=%d\n", cu->processor_id_low); 825 } 826 827 /* kfd_parse_subtype_cu - parse compute unit subtypes and attach it to correct 828 * topology device present in the device_list 829 */ 830 static int kfd_parse_subtype_cu(struct crat_subtype_computeunit *cu, 831 struct list_head *device_list) 832 { 833 struct kfd_topology_device *dev; 834 835 pr_debug("Found CU entry in CRAT table with proximity_domain=%d caps=%x\n", 836 cu->proximity_domain, cu->hsa_capability); 837 list_for_each_entry(dev, device_list, list) { 838 if (cu->proximity_domain == dev->proximity_domain) { 839 if (cu->flags & CRAT_CU_FLAGS_CPU_PRESENT) 840 kfd_populated_cu_info_cpu(dev, cu); 841 842 if (cu->flags & CRAT_CU_FLAGS_GPU_PRESENT) 843 kfd_populated_cu_info_gpu(dev, cu); 844 break; 845 } 846 } 847 848 return 0; 849 } 850 851 static struct kfd_mem_properties * 852 find_subtype_mem(uint32_t heap_type, uint32_t flags, uint32_t width, 853 struct kfd_topology_device *dev) 854 { 855 struct kfd_mem_properties *props; 856 857 list_for_each_entry(props, &dev->mem_props, list) { 858 if (props->heap_type == heap_type 859 && props->flags == flags 860 && props->width == width) 861 return props; 862 } 863 864 return NULL; 865 } 866 /* kfd_parse_subtype_mem - parse memory subtypes and attach it to correct 867 * topology device present in the device_list 868 */ 869 static int kfd_parse_subtype_mem(struct crat_subtype_memory *mem, 870 struct list_head *device_list) 871 { 872 struct kfd_mem_properties *props; 873 struct kfd_topology_device *dev; 874 uint32_t heap_type; 875 uint64_t size_in_bytes; 876 uint32_t flags = 0; 877 uint32_t width; 878 879 pr_debug("Found memory entry in CRAT table with proximity_domain=%d\n", 880 mem->proximity_domain); 881 list_for_each_entry(dev, device_list, list) { 882 if (mem->proximity_domain == dev->proximity_domain) { 883 /* We're on GPU node */ 884 if (dev->node_props.cpu_cores_count == 0) { 885 /* APU */ 886 if (mem->visibility_type == 0) 887 heap_type = 888 HSA_MEM_HEAP_TYPE_FB_PRIVATE; 889 /* dGPU */ 890 else 891 heap_type = mem->visibility_type; 892 } else 893 heap_type = HSA_MEM_HEAP_TYPE_SYSTEM; 894 895 if (mem->flags & CRAT_MEM_FLAGS_HOT_PLUGGABLE) 896 flags |= HSA_MEM_FLAGS_HOT_PLUGGABLE; 897 if (mem->flags & CRAT_MEM_FLAGS_NON_VOLATILE) 898 flags |= HSA_MEM_FLAGS_NON_VOLATILE; 899 900 size_in_bytes = 901 ((uint64_t)mem->length_high << 32) + 902 mem->length_low; 903 width = mem->width; 904 905 /* Multiple banks of the same type are aggregated into 906 * one. User mode doesn't care about multiple physical 907 * memory segments. It's managed as a single virtual 908 * heap for user mode. 909 */ 910 props = find_subtype_mem(heap_type, flags, width, dev); 911 if (props) { 912 props->size_in_bytes += size_in_bytes; 913 break; 914 } 915 916 props = kfd_alloc_struct(props); 917 if (!props) 918 return -ENOMEM; 919 920 props->heap_type = heap_type; 921 props->flags = flags; 922 props->size_in_bytes = size_in_bytes; 923 props->width = width; 924 925 dev->node_props.mem_banks_count++; 926 list_add_tail(&props->list, &dev->mem_props); 927 928 break; 929 } 930 } 931 932 return 0; 933 } 934 935 /* kfd_parse_subtype_cache - parse cache subtypes and attach it to correct 936 * topology device present in the device_list 937 */ 938 static int kfd_parse_subtype_cache(struct crat_subtype_cache *cache, 939 struct list_head *device_list) 940 { 941 struct kfd_cache_properties *props; 942 struct kfd_topology_device *dev; 943 uint32_t id; 944 uint32_t total_num_of_cu; 945 946 id = cache->processor_id_low; 947 948 pr_debug("Found cache entry in CRAT table with processor_id=%d\n", id); 949 list_for_each_entry(dev, device_list, list) { 950 total_num_of_cu = (dev->node_props.array_count * 951 dev->node_props.cu_per_simd_array); 952 953 /* Cache infomration in CRAT doesn't have proximity_domain 954 * information as it is associated with a CPU core or GPU 955 * Compute Unit. So map the cache using CPU core Id or SIMD 956 * (GPU) ID. 957 * TODO: This works because currently we can safely assume that 958 * Compute Units are parsed before caches are parsed. In 959 * future, remove this dependency 960 */ 961 if ((id >= dev->node_props.cpu_core_id_base && 962 id <= dev->node_props.cpu_core_id_base + 963 dev->node_props.cpu_cores_count) || 964 (id >= dev->node_props.simd_id_base && 965 id < dev->node_props.simd_id_base + 966 total_num_of_cu)) { 967 props = kfd_alloc_struct(props); 968 if (!props) 969 return -ENOMEM; 970 971 props->processor_id_low = id; 972 props->cache_level = cache->cache_level; 973 props->cache_size = cache->cache_size; 974 props->cacheline_size = cache->cache_line_size; 975 props->cachelines_per_tag = cache->lines_per_tag; 976 props->cache_assoc = cache->associativity; 977 props->cache_latency = cache->cache_latency; 978 memcpy(props->sibling_map, cache->sibling_map, 979 sizeof(props->sibling_map)); 980 981 if (cache->flags & CRAT_CACHE_FLAGS_DATA_CACHE) 982 props->cache_type |= HSA_CACHE_TYPE_DATA; 983 if (cache->flags & CRAT_CACHE_FLAGS_INST_CACHE) 984 props->cache_type |= HSA_CACHE_TYPE_INSTRUCTION; 985 if (cache->flags & CRAT_CACHE_FLAGS_CPU_CACHE) 986 props->cache_type |= HSA_CACHE_TYPE_CPU; 987 if (cache->flags & CRAT_CACHE_FLAGS_SIMD_CACHE) 988 props->cache_type |= HSA_CACHE_TYPE_HSACU; 989 990 dev->cache_count++; 991 dev->node_props.caches_count++; 992 list_add_tail(&props->list, &dev->cache_props); 993 994 break; 995 } 996 } 997 998 return 0; 999 } 1000 1001 /* kfd_parse_subtype_iolink - parse iolink subtypes and attach it to correct 1002 * topology device present in the device_list 1003 */ 1004 static int kfd_parse_subtype_iolink(struct crat_subtype_iolink *iolink, 1005 struct list_head *device_list) 1006 { 1007 struct kfd_iolink_properties *props = NULL, *props2; 1008 struct kfd_topology_device *dev, *to_dev; 1009 uint32_t id_from; 1010 uint32_t id_to; 1011 1012 id_from = iolink->proximity_domain_from; 1013 id_to = iolink->proximity_domain_to; 1014 1015 pr_debug("Found IO link entry in CRAT table with id_from=%d, id_to %d\n", 1016 id_from, id_to); 1017 list_for_each_entry(dev, device_list, list) { 1018 if (id_from == dev->proximity_domain) { 1019 props = kfd_alloc_struct(props); 1020 if (!props) 1021 return -ENOMEM; 1022 1023 props->node_from = id_from; 1024 props->node_to = id_to; 1025 props->ver_maj = iolink->version_major; 1026 props->ver_min = iolink->version_minor; 1027 props->iolink_type = iolink->io_interface_type; 1028 1029 if (props->iolink_type == CRAT_IOLINK_TYPE_PCIEXPRESS) 1030 props->weight = 20; 1031 else if (props->iolink_type == CRAT_IOLINK_TYPE_XGMI) 1032 props->weight = 15 * iolink->num_hops_xgmi; 1033 else 1034 props->weight = node_distance(id_from, id_to); 1035 1036 props->min_latency = iolink->minimum_latency; 1037 props->max_latency = iolink->maximum_latency; 1038 props->min_bandwidth = iolink->minimum_bandwidth_mbs; 1039 props->max_bandwidth = iolink->maximum_bandwidth_mbs; 1040 props->rec_transfer_size = 1041 iolink->recommended_transfer_size; 1042 1043 dev->node_props.io_links_count++; 1044 list_add_tail(&props->list, &dev->io_link_props); 1045 break; 1046 } 1047 } 1048 1049 /* CPU topology is created before GPUs are detected, so CPU->GPU 1050 * links are not built at that time. If a PCIe type is discovered, it 1051 * means a GPU is detected and we are adding GPU->CPU to the topology. 1052 * At this time, also add the corresponded CPU->GPU link if GPU 1053 * is large bar. 1054 * For xGMI, we only added the link with one direction in the crat 1055 * table, add corresponded reversed direction link now. 1056 */ 1057 if (props && (iolink->flags & CRAT_IOLINK_FLAGS_BI_DIRECTIONAL)) { 1058 to_dev = kfd_topology_device_by_proximity_domain_no_lock(id_to); 1059 if (!to_dev) 1060 return -ENODEV; 1061 /* same everything but the other direction */ 1062 props2 = kmemdup(props, sizeof(*props2), GFP_KERNEL); 1063 if (!props2) 1064 return -ENOMEM; 1065 1066 props2->node_from = id_to; 1067 props2->node_to = id_from; 1068 props2->kobj = NULL; 1069 to_dev->node_props.io_links_count++; 1070 list_add_tail(&props2->list, &to_dev->io_link_props); 1071 } 1072 1073 return 0; 1074 } 1075 1076 /* kfd_parse_subtype - parse subtypes and attach it to correct topology device 1077 * present in the device_list 1078 * @sub_type_hdr - subtype section of crat_image 1079 * @device_list - list of topology devices present in this crat_image 1080 */ 1081 static int kfd_parse_subtype(struct crat_subtype_generic *sub_type_hdr, 1082 struct list_head *device_list) 1083 { 1084 struct crat_subtype_computeunit *cu; 1085 struct crat_subtype_memory *mem; 1086 struct crat_subtype_cache *cache; 1087 struct crat_subtype_iolink *iolink; 1088 int ret = 0; 1089 1090 switch (sub_type_hdr->type) { 1091 case CRAT_SUBTYPE_COMPUTEUNIT_AFFINITY: 1092 cu = (struct crat_subtype_computeunit *)sub_type_hdr; 1093 ret = kfd_parse_subtype_cu(cu, device_list); 1094 break; 1095 case CRAT_SUBTYPE_MEMORY_AFFINITY: 1096 mem = (struct crat_subtype_memory *)sub_type_hdr; 1097 ret = kfd_parse_subtype_mem(mem, device_list); 1098 break; 1099 case CRAT_SUBTYPE_CACHE_AFFINITY: 1100 cache = (struct crat_subtype_cache *)sub_type_hdr; 1101 ret = kfd_parse_subtype_cache(cache, device_list); 1102 break; 1103 case CRAT_SUBTYPE_TLB_AFFINITY: 1104 /* 1105 * For now, nothing to do here 1106 */ 1107 pr_debug("Found TLB entry in CRAT table (not processing)\n"); 1108 break; 1109 case CRAT_SUBTYPE_CCOMPUTE_AFFINITY: 1110 /* 1111 * For now, nothing to do here 1112 */ 1113 pr_debug("Found CCOMPUTE entry in CRAT table (not processing)\n"); 1114 break; 1115 case CRAT_SUBTYPE_IOLINK_AFFINITY: 1116 iolink = (struct crat_subtype_iolink *)sub_type_hdr; 1117 ret = kfd_parse_subtype_iolink(iolink, device_list); 1118 break; 1119 default: 1120 pr_warn("Unknown subtype %d in CRAT\n", 1121 sub_type_hdr->type); 1122 } 1123 1124 return ret; 1125 } 1126 1127 /* kfd_parse_crat_table - parse CRAT table. For each node present in CRAT 1128 * create a kfd_topology_device and add in to device_list. Also parse 1129 * CRAT subtypes and attach it to appropriate kfd_topology_device 1130 * @crat_image - input image containing CRAT 1131 * @device_list - [OUT] list of kfd_topology_device generated after 1132 * parsing crat_image 1133 * @proximity_domain - Proximity domain of the first device in the table 1134 * 1135 * Return - 0 if successful else -ve value 1136 */ 1137 int kfd_parse_crat_table(void *crat_image, struct list_head *device_list, 1138 uint32_t proximity_domain) 1139 { 1140 struct kfd_topology_device *top_dev = NULL; 1141 struct crat_subtype_generic *sub_type_hdr; 1142 uint16_t node_id; 1143 int ret = 0; 1144 struct crat_header *crat_table = (struct crat_header *)crat_image; 1145 uint16_t num_nodes; 1146 uint32_t image_len; 1147 1148 if (!crat_image) 1149 return -EINVAL; 1150 1151 if (!list_empty(device_list)) { 1152 pr_warn("Error device list should be empty\n"); 1153 return -EINVAL; 1154 } 1155 1156 num_nodes = crat_table->num_domains; 1157 image_len = crat_table->length; 1158 1159 pr_debug("Parsing CRAT table with %d nodes\n", num_nodes); 1160 1161 for (node_id = 0; node_id < num_nodes; node_id++) { 1162 top_dev = kfd_create_topology_device(device_list); 1163 if (!top_dev) 1164 break; 1165 top_dev->proximity_domain = proximity_domain++; 1166 } 1167 1168 if (!top_dev) { 1169 ret = -ENOMEM; 1170 goto err; 1171 } 1172 1173 memcpy(top_dev->oem_id, crat_table->oem_id, CRAT_OEMID_LENGTH); 1174 memcpy(top_dev->oem_table_id, crat_table->oem_table_id, 1175 CRAT_OEMTABLEID_LENGTH); 1176 top_dev->oem_revision = crat_table->oem_revision; 1177 1178 sub_type_hdr = (struct crat_subtype_generic *)(crat_table+1); 1179 while ((char *)sub_type_hdr + sizeof(struct crat_subtype_generic) < 1180 ((char *)crat_image) + image_len) { 1181 if (sub_type_hdr->flags & CRAT_SUBTYPE_FLAGS_ENABLED) { 1182 ret = kfd_parse_subtype(sub_type_hdr, device_list); 1183 if (ret) 1184 break; 1185 } 1186 1187 sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr + 1188 sub_type_hdr->length); 1189 } 1190 1191 err: 1192 if (ret) 1193 kfd_release_topology_device_list(device_list); 1194 1195 return ret; 1196 } 1197 1198 /* Helper function. See kfd_fill_gpu_cache_info for parameter description */ 1199 static int fill_in_l1_pcache(struct crat_subtype_cache *pcache, 1200 struct kfd_gpu_cache_info *pcache_info, 1201 struct kfd_cu_info *cu_info, 1202 int mem_available, 1203 int cu_bitmask, 1204 int cache_type, unsigned int cu_processor_id, 1205 int cu_block) 1206 { 1207 unsigned int cu_sibling_map_mask; 1208 int first_active_cu; 1209 1210 /* First check if enough memory is available */ 1211 if (sizeof(struct crat_subtype_cache) > mem_available) 1212 return -ENOMEM; 1213 1214 cu_sibling_map_mask = cu_bitmask; 1215 cu_sibling_map_mask >>= cu_block; 1216 cu_sibling_map_mask &= 1217 ((1 << pcache_info[cache_type].num_cu_shared) - 1); 1218 first_active_cu = ffs(cu_sibling_map_mask); 1219 1220 /* CU could be inactive. In case of shared cache find the first active 1221 * CU. and incase of non-shared cache check if the CU is inactive. If 1222 * inactive active skip it 1223 */ 1224 if (first_active_cu) { 1225 memset(pcache, 0, sizeof(struct crat_subtype_cache)); 1226 pcache->type = CRAT_SUBTYPE_CACHE_AFFINITY; 1227 pcache->length = sizeof(struct crat_subtype_cache); 1228 pcache->flags = pcache_info[cache_type].flags; 1229 pcache->processor_id_low = cu_processor_id 1230 + (first_active_cu - 1); 1231 pcache->cache_level = pcache_info[cache_type].cache_level; 1232 pcache->cache_size = pcache_info[cache_type].cache_size; 1233 1234 /* Sibling map is w.r.t processor_id_low, so shift out 1235 * inactive CU 1236 */ 1237 cu_sibling_map_mask = 1238 cu_sibling_map_mask >> (first_active_cu - 1); 1239 1240 pcache->sibling_map[0] = (uint8_t)(cu_sibling_map_mask & 0xFF); 1241 pcache->sibling_map[1] = 1242 (uint8_t)((cu_sibling_map_mask >> 8) & 0xFF); 1243 pcache->sibling_map[2] = 1244 (uint8_t)((cu_sibling_map_mask >> 16) & 0xFF); 1245 pcache->sibling_map[3] = 1246 (uint8_t)((cu_sibling_map_mask >> 24) & 0xFF); 1247 return 0; 1248 } 1249 return 1; 1250 } 1251 1252 /* Helper function. See kfd_fill_gpu_cache_info for parameter description */ 1253 static int fill_in_l2_l3_pcache(struct crat_subtype_cache *pcache, 1254 struct kfd_gpu_cache_info *pcache_info, 1255 struct kfd_cu_info *cu_info, 1256 int mem_available, 1257 int cache_type, unsigned int cu_processor_id) 1258 { 1259 unsigned int cu_sibling_map_mask; 1260 int first_active_cu; 1261 int i, j, k; 1262 1263 /* First check if enough memory is available */ 1264 if (sizeof(struct crat_subtype_cache) > mem_available) 1265 return -ENOMEM; 1266 1267 cu_sibling_map_mask = cu_info->cu_bitmap[0][0]; 1268 cu_sibling_map_mask &= 1269 ((1 << pcache_info[cache_type].num_cu_shared) - 1); 1270 first_active_cu = ffs(cu_sibling_map_mask); 1271 1272 /* CU could be inactive. In case of shared cache find the first active 1273 * CU. and incase of non-shared cache check if the CU is inactive. If 1274 * inactive active skip it 1275 */ 1276 if (first_active_cu) { 1277 memset(pcache, 0, sizeof(struct crat_subtype_cache)); 1278 pcache->type = CRAT_SUBTYPE_CACHE_AFFINITY; 1279 pcache->length = sizeof(struct crat_subtype_cache); 1280 pcache->flags = pcache_info[cache_type].flags; 1281 pcache->processor_id_low = cu_processor_id 1282 + (first_active_cu - 1); 1283 pcache->cache_level = pcache_info[cache_type].cache_level; 1284 pcache->cache_size = pcache_info[cache_type].cache_size; 1285 1286 /* Sibling map is w.r.t processor_id_low, so shift out 1287 * inactive CU 1288 */ 1289 cu_sibling_map_mask = 1290 cu_sibling_map_mask >> (first_active_cu - 1); 1291 k = 0; 1292 for (i = 0; i < cu_info->num_shader_engines; i++) { 1293 for (j = 0; j < cu_info->num_shader_arrays_per_engine; 1294 j++) { 1295 pcache->sibling_map[k] = 1296 (uint8_t)(cu_sibling_map_mask & 0xFF); 1297 pcache->sibling_map[k+1] = 1298 (uint8_t)((cu_sibling_map_mask >> 8) & 0xFF); 1299 pcache->sibling_map[k+2] = 1300 (uint8_t)((cu_sibling_map_mask >> 16) & 0xFF); 1301 pcache->sibling_map[k+3] = 1302 (uint8_t)((cu_sibling_map_mask >> 24) & 0xFF); 1303 k += 4; 1304 cu_sibling_map_mask = 1305 cu_info->cu_bitmap[i % 4][j + i / 4]; 1306 cu_sibling_map_mask &= ( 1307 (1 << pcache_info[cache_type].num_cu_shared) 1308 - 1); 1309 } 1310 } 1311 return 0; 1312 } 1313 return 1; 1314 } 1315 1316 #define KFD_MAX_CACHE_TYPES 6 1317 1318 static int kfd_fill_gpu_cache_info_from_gfx_config(struct kfd_dev *kdev, 1319 struct kfd_gpu_cache_info *pcache_info) 1320 { 1321 struct amdgpu_device *adev = kdev->adev; 1322 int i = 0; 1323 1324 /* TCP L1 Cache per CU */ 1325 if (adev->gfx.config.gc_tcp_l1_size) { 1326 pcache_info[i].cache_size = adev->gfx.config.gc_tcp_l1_size; 1327 pcache_info[i].cache_level = 1; 1328 pcache_info[i].flags = (CRAT_CACHE_FLAGS_ENABLED | 1329 CRAT_CACHE_FLAGS_DATA_CACHE | 1330 CRAT_CACHE_FLAGS_SIMD_CACHE); 1331 pcache_info[0].num_cu_shared = adev->gfx.config.gc_num_tcp_per_wpg / 2; 1332 i++; 1333 } 1334 /* Scalar L1 Instruction Cache per SQC */ 1335 if (adev->gfx.config.gc_l1_instruction_cache_size_per_sqc) { 1336 pcache_info[i].cache_size = 1337 adev->gfx.config.gc_l1_instruction_cache_size_per_sqc; 1338 pcache_info[i].cache_level = 1; 1339 pcache_info[i].flags = (CRAT_CACHE_FLAGS_ENABLED | 1340 CRAT_CACHE_FLAGS_INST_CACHE | 1341 CRAT_CACHE_FLAGS_SIMD_CACHE); 1342 pcache_info[i].num_cu_shared = adev->gfx.config.gc_num_sqc_per_wgp * 2; 1343 i++; 1344 } 1345 /* Scalar L1 Data Cache per SQC */ 1346 if (adev->gfx.config.gc_l1_data_cache_size_per_sqc) { 1347 pcache_info[i].cache_size = adev->gfx.config.gc_l1_data_cache_size_per_sqc; 1348 pcache_info[i].cache_level = 1; 1349 pcache_info[i].flags = (CRAT_CACHE_FLAGS_ENABLED | 1350 CRAT_CACHE_FLAGS_DATA_CACHE | 1351 CRAT_CACHE_FLAGS_SIMD_CACHE); 1352 pcache_info[i].num_cu_shared = adev->gfx.config.gc_num_sqc_per_wgp * 2; 1353 i++; 1354 } 1355 /* GL1 Data Cache per SA */ 1356 if (adev->gfx.config.gc_gl1c_per_sa && 1357 adev->gfx.config.gc_gl1c_size_per_instance) { 1358 pcache_info[i].cache_size = adev->gfx.config.gc_gl1c_per_sa * 1359 adev->gfx.config.gc_gl1c_size_per_instance; 1360 pcache_info[i].cache_level = 1; 1361 pcache_info[i].flags = (CRAT_CACHE_FLAGS_ENABLED | 1362 CRAT_CACHE_FLAGS_DATA_CACHE | 1363 CRAT_CACHE_FLAGS_SIMD_CACHE); 1364 pcache_info[i].num_cu_shared = adev->gfx.config.max_cu_per_sh; 1365 i++; 1366 } 1367 /* L2 Data Cache per GPU (Total Tex Cache) */ 1368 if (adev->gfx.config.gc_gl2c_per_gpu) { 1369 pcache_info[i].cache_size = adev->gfx.config.gc_gl2c_per_gpu; 1370 pcache_info[i].cache_level = 2; 1371 pcache_info[i].flags = (CRAT_CACHE_FLAGS_ENABLED | 1372 CRAT_CACHE_FLAGS_DATA_CACHE | 1373 CRAT_CACHE_FLAGS_SIMD_CACHE); 1374 pcache_info[i].num_cu_shared = adev->gfx.config.max_cu_per_sh; 1375 i++; 1376 } 1377 /* L3 Data Cache per GPU */ 1378 if (adev->gmc.mall_size) { 1379 pcache_info[i].cache_size = adev->gmc.mall_size / 1024; 1380 pcache_info[i].cache_level = 3; 1381 pcache_info[i].flags = (CRAT_CACHE_FLAGS_ENABLED | 1382 CRAT_CACHE_FLAGS_DATA_CACHE | 1383 CRAT_CACHE_FLAGS_SIMD_CACHE); 1384 pcache_info[i].num_cu_shared = adev->gfx.config.max_cu_per_sh; 1385 i++; 1386 } 1387 return i; 1388 } 1389 1390 /* kfd_fill_gpu_cache_info - Fill GPU cache info using kfd_gpu_cache_info 1391 * tables 1392 * 1393 * @kdev - [IN] GPU device 1394 * @gpu_processor_id - [IN] GPU processor ID to which these caches 1395 * associate 1396 * @available_size - [IN] Amount of memory available in pcache 1397 * @cu_info - [IN] Compute Unit info obtained from KGD 1398 * @pcache - [OUT] memory into which cache data is to be filled in. 1399 * @size_filled - [OUT] amount of data used up in pcache. 1400 * @num_of_entries - [OUT] number of caches added 1401 */ 1402 static int kfd_fill_gpu_cache_info(struct kfd_dev *kdev, 1403 int gpu_processor_id, 1404 int available_size, 1405 struct kfd_cu_info *cu_info, 1406 struct crat_subtype_cache *pcache, 1407 int *size_filled, 1408 int *num_of_entries) 1409 { 1410 struct kfd_gpu_cache_info *pcache_info; 1411 struct kfd_gpu_cache_info cache_info[KFD_MAX_CACHE_TYPES]; 1412 int num_of_cache_types = 0; 1413 int i, j, k; 1414 int ct = 0; 1415 int mem_available = available_size; 1416 unsigned int cu_processor_id; 1417 int ret; 1418 unsigned int num_cu_shared; 1419 1420 switch (kdev->adev->asic_type) { 1421 case CHIP_KAVERI: 1422 pcache_info = kaveri_cache_info; 1423 num_of_cache_types = ARRAY_SIZE(kaveri_cache_info); 1424 break; 1425 case CHIP_HAWAII: 1426 pcache_info = hawaii_cache_info; 1427 num_of_cache_types = ARRAY_SIZE(hawaii_cache_info); 1428 break; 1429 case CHIP_CARRIZO: 1430 pcache_info = carrizo_cache_info; 1431 num_of_cache_types = ARRAY_SIZE(carrizo_cache_info); 1432 break; 1433 case CHIP_TONGA: 1434 pcache_info = tonga_cache_info; 1435 num_of_cache_types = ARRAY_SIZE(tonga_cache_info); 1436 break; 1437 case CHIP_FIJI: 1438 pcache_info = fiji_cache_info; 1439 num_of_cache_types = ARRAY_SIZE(fiji_cache_info); 1440 break; 1441 case CHIP_POLARIS10: 1442 pcache_info = polaris10_cache_info; 1443 num_of_cache_types = ARRAY_SIZE(polaris10_cache_info); 1444 break; 1445 case CHIP_POLARIS11: 1446 pcache_info = polaris11_cache_info; 1447 num_of_cache_types = ARRAY_SIZE(polaris11_cache_info); 1448 break; 1449 case CHIP_POLARIS12: 1450 pcache_info = polaris12_cache_info; 1451 num_of_cache_types = ARRAY_SIZE(polaris12_cache_info); 1452 break; 1453 case CHIP_VEGAM: 1454 pcache_info = vegam_cache_info; 1455 num_of_cache_types = ARRAY_SIZE(vegam_cache_info); 1456 break; 1457 default: 1458 switch (KFD_GC_VERSION(kdev)) { 1459 case IP_VERSION(9, 0, 1): 1460 pcache_info = vega10_cache_info; 1461 num_of_cache_types = ARRAY_SIZE(vega10_cache_info); 1462 break; 1463 case IP_VERSION(9, 2, 1): 1464 pcache_info = vega12_cache_info; 1465 num_of_cache_types = ARRAY_SIZE(vega12_cache_info); 1466 break; 1467 case IP_VERSION(9, 4, 0): 1468 case IP_VERSION(9, 4, 1): 1469 pcache_info = vega20_cache_info; 1470 num_of_cache_types = ARRAY_SIZE(vega20_cache_info); 1471 break; 1472 case IP_VERSION(9, 4, 2): 1473 pcache_info = aldebaran_cache_info; 1474 num_of_cache_types = ARRAY_SIZE(aldebaran_cache_info); 1475 break; 1476 case IP_VERSION(9, 1, 0): 1477 case IP_VERSION(9, 2, 2): 1478 pcache_info = raven_cache_info; 1479 num_of_cache_types = ARRAY_SIZE(raven_cache_info); 1480 break; 1481 case IP_VERSION(9, 3, 0): 1482 pcache_info = renoir_cache_info; 1483 num_of_cache_types = ARRAY_SIZE(renoir_cache_info); 1484 break; 1485 case IP_VERSION(10, 1, 10): 1486 case IP_VERSION(10, 1, 2): 1487 case IP_VERSION(10, 1, 3): 1488 case IP_VERSION(10, 1, 4): 1489 pcache_info = navi10_cache_info; 1490 num_of_cache_types = ARRAY_SIZE(navi10_cache_info); 1491 break; 1492 case IP_VERSION(10, 1, 1): 1493 pcache_info = navi14_cache_info; 1494 num_of_cache_types = ARRAY_SIZE(navi14_cache_info); 1495 break; 1496 case IP_VERSION(10, 3, 0): 1497 pcache_info = sienna_cichlid_cache_info; 1498 num_of_cache_types = ARRAY_SIZE(sienna_cichlid_cache_info); 1499 break; 1500 case IP_VERSION(10, 3, 2): 1501 pcache_info = navy_flounder_cache_info; 1502 num_of_cache_types = ARRAY_SIZE(navy_flounder_cache_info); 1503 break; 1504 case IP_VERSION(10, 3, 4): 1505 pcache_info = dimgrey_cavefish_cache_info; 1506 num_of_cache_types = ARRAY_SIZE(dimgrey_cavefish_cache_info); 1507 break; 1508 case IP_VERSION(10, 3, 1): 1509 pcache_info = vangogh_cache_info; 1510 num_of_cache_types = ARRAY_SIZE(vangogh_cache_info); 1511 break; 1512 case IP_VERSION(10, 3, 5): 1513 pcache_info = beige_goby_cache_info; 1514 num_of_cache_types = ARRAY_SIZE(beige_goby_cache_info); 1515 break; 1516 case IP_VERSION(10, 3, 3): 1517 case IP_VERSION(10, 3, 6): /* TODO: Double check these on production silicon */ 1518 case IP_VERSION(10, 3, 7): /* TODO: Double check these on production silicon */ 1519 pcache_info = yellow_carp_cache_info; 1520 num_of_cache_types = ARRAY_SIZE(yellow_carp_cache_info); 1521 break; 1522 case IP_VERSION(11, 0, 0): 1523 case IP_VERSION(11, 0, 1): 1524 case IP_VERSION(11, 0, 2): 1525 pcache_info = cache_info; 1526 num_of_cache_types = 1527 kfd_fill_gpu_cache_info_from_gfx_config(kdev, pcache_info); 1528 break; 1529 default: 1530 return -EINVAL; 1531 } 1532 } 1533 1534 *size_filled = 0; 1535 *num_of_entries = 0; 1536 1537 /* For each type of cache listed in the kfd_gpu_cache_info table, 1538 * go through all available Compute Units. 1539 * The [i,j,k] loop will 1540 * if kfd_gpu_cache_info.num_cu_shared = 1 1541 * will parse through all available CU 1542 * If (kfd_gpu_cache_info.num_cu_shared != 1) 1543 * then it will consider only one CU from 1544 * the shared unit 1545 */ 1546 1547 for (ct = 0; ct < num_of_cache_types; ct++) { 1548 cu_processor_id = gpu_processor_id; 1549 if (pcache_info[ct].cache_level == 1) { 1550 for (i = 0; i < cu_info->num_shader_engines; i++) { 1551 for (j = 0; j < cu_info->num_shader_arrays_per_engine; j++) { 1552 for (k = 0; k < cu_info->num_cu_per_sh; 1553 k += pcache_info[ct].num_cu_shared) { 1554 ret = fill_in_l1_pcache(pcache, 1555 pcache_info, 1556 cu_info, 1557 mem_available, 1558 cu_info->cu_bitmap[i % 4][j + i / 4], 1559 ct, 1560 cu_processor_id, 1561 k); 1562 1563 if (ret < 0) 1564 break; 1565 1566 if (!ret) { 1567 pcache++; 1568 (*num_of_entries)++; 1569 mem_available -= sizeof(*pcache); 1570 (*size_filled) += sizeof(*pcache); 1571 } 1572 1573 /* Move to next CU block */ 1574 num_cu_shared = ((k + pcache_info[ct].num_cu_shared) <= 1575 cu_info->num_cu_per_sh) ? 1576 pcache_info[ct].num_cu_shared : 1577 (cu_info->num_cu_per_sh - k); 1578 cu_processor_id += num_cu_shared; 1579 } 1580 } 1581 } 1582 } else { 1583 ret = fill_in_l2_l3_pcache(pcache, 1584 pcache_info, 1585 cu_info, 1586 mem_available, 1587 ct, 1588 cu_processor_id); 1589 1590 if (ret < 0) 1591 break; 1592 1593 if (!ret) { 1594 pcache++; 1595 (*num_of_entries)++; 1596 mem_available -= sizeof(*pcache); 1597 (*size_filled) += sizeof(*pcache); 1598 } 1599 } 1600 } 1601 1602 pr_debug("Added [%d] GPU cache entries\n", *num_of_entries); 1603 1604 return 0; 1605 } 1606 1607 static bool kfd_ignore_crat(void) 1608 { 1609 bool ret; 1610 1611 if (ignore_crat) 1612 return true; 1613 1614 #ifndef KFD_SUPPORT_IOMMU_V2 1615 ret = true; 1616 #else 1617 ret = false; 1618 #endif 1619 1620 return ret; 1621 } 1622 1623 /* 1624 * kfd_create_crat_image_acpi - Allocates memory for CRAT image and 1625 * copies CRAT from ACPI (if available). 1626 * NOTE: Call kfd_destroy_crat_image to free CRAT image memory 1627 * 1628 * @crat_image: CRAT read from ACPI. If no CRAT in ACPI then 1629 * crat_image will be NULL 1630 * @size: [OUT] size of crat_image 1631 * 1632 * Return 0 if successful else return error code 1633 */ 1634 int kfd_create_crat_image_acpi(void **crat_image, size_t *size) 1635 { 1636 struct acpi_table_header *crat_table; 1637 acpi_status status; 1638 void *pcrat_image; 1639 int rc = 0; 1640 1641 if (!crat_image) 1642 return -EINVAL; 1643 1644 *crat_image = NULL; 1645 1646 if (kfd_ignore_crat()) { 1647 pr_info("CRAT table disabled by module option\n"); 1648 return -ENODATA; 1649 } 1650 1651 /* Fetch the CRAT table from ACPI */ 1652 status = acpi_get_table(CRAT_SIGNATURE, 0, &crat_table); 1653 if (status == AE_NOT_FOUND) { 1654 pr_info("CRAT table not found\n"); 1655 return -ENODATA; 1656 } else if (ACPI_FAILURE(status)) { 1657 const char *err = acpi_format_exception(status); 1658 1659 pr_err("CRAT table error: %s\n", err); 1660 return -EINVAL; 1661 } 1662 1663 pcrat_image = kvmalloc(crat_table->length, GFP_KERNEL); 1664 if (!pcrat_image) { 1665 rc = -ENOMEM; 1666 goto out; 1667 } 1668 1669 memcpy(pcrat_image, crat_table, crat_table->length); 1670 *crat_image = pcrat_image; 1671 *size = crat_table->length; 1672 out: 1673 acpi_put_table(crat_table); 1674 return rc; 1675 } 1676 1677 /* Memory required to create Virtual CRAT. 1678 * Since there is no easy way to predict the amount of memory required, the 1679 * following amount is allocated for GPU Virtual CRAT. This is 1680 * expected to cover all known conditions. But to be safe additional check 1681 * is put in the code to ensure we don't overwrite. 1682 */ 1683 #define VCRAT_SIZE_FOR_GPU (4 * PAGE_SIZE) 1684 1685 /* kfd_fill_cu_for_cpu - Fill in Compute info for the given CPU NUMA node 1686 * 1687 * @numa_node_id: CPU NUMA node id 1688 * @avail_size: Available size in the memory 1689 * @sub_type_hdr: Memory into which compute info will be filled in 1690 * 1691 * Return 0 if successful else return -ve value 1692 */ 1693 static int kfd_fill_cu_for_cpu(int numa_node_id, int *avail_size, 1694 int proximity_domain, 1695 struct crat_subtype_computeunit *sub_type_hdr) 1696 { 1697 const struct cpumask *cpumask; 1698 1699 *avail_size -= sizeof(struct crat_subtype_computeunit); 1700 if (*avail_size < 0) 1701 return -ENOMEM; 1702 1703 memset(sub_type_hdr, 0, sizeof(struct crat_subtype_computeunit)); 1704 1705 /* Fill in subtype header data */ 1706 sub_type_hdr->type = CRAT_SUBTYPE_COMPUTEUNIT_AFFINITY; 1707 sub_type_hdr->length = sizeof(struct crat_subtype_computeunit); 1708 sub_type_hdr->flags = CRAT_SUBTYPE_FLAGS_ENABLED; 1709 1710 cpumask = cpumask_of_node(numa_node_id); 1711 1712 /* Fill in CU data */ 1713 sub_type_hdr->flags |= CRAT_CU_FLAGS_CPU_PRESENT; 1714 sub_type_hdr->proximity_domain = proximity_domain; 1715 sub_type_hdr->processor_id_low = kfd_numa_node_to_apic_id(numa_node_id); 1716 if (sub_type_hdr->processor_id_low == -1) 1717 return -EINVAL; 1718 1719 sub_type_hdr->num_cpu_cores = cpumask_weight(cpumask); 1720 1721 return 0; 1722 } 1723 1724 /* kfd_fill_mem_info_for_cpu - Fill in Memory info for the given CPU NUMA node 1725 * 1726 * @numa_node_id: CPU NUMA node id 1727 * @avail_size: Available size in the memory 1728 * @sub_type_hdr: Memory into which compute info will be filled in 1729 * 1730 * Return 0 if successful else return -ve value 1731 */ 1732 static int kfd_fill_mem_info_for_cpu(int numa_node_id, int *avail_size, 1733 int proximity_domain, 1734 struct crat_subtype_memory *sub_type_hdr) 1735 { 1736 uint64_t mem_in_bytes = 0; 1737 pg_data_t *pgdat; 1738 int zone_type; 1739 1740 *avail_size -= sizeof(struct crat_subtype_memory); 1741 if (*avail_size < 0) 1742 return -ENOMEM; 1743 1744 memset(sub_type_hdr, 0, sizeof(struct crat_subtype_memory)); 1745 1746 /* Fill in subtype header data */ 1747 sub_type_hdr->type = CRAT_SUBTYPE_MEMORY_AFFINITY; 1748 sub_type_hdr->length = sizeof(struct crat_subtype_memory); 1749 sub_type_hdr->flags = CRAT_SUBTYPE_FLAGS_ENABLED; 1750 1751 /* Fill in Memory Subunit data */ 1752 1753 /* Unlike si_meminfo, si_meminfo_node is not exported. So 1754 * the following lines are duplicated from si_meminfo_node 1755 * function 1756 */ 1757 pgdat = NODE_DATA(numa_node_id); 1758 for (zone_type = 0; zone_type < MAX_NR_ZONES; zone_type++) 1759 mem_in_bytes += zone_managed_pages(&pgdat->node_zones[zone_type]); 1760 mem_in_bytes <<= PAGE_SHIFT; 1761 1762 sub_type_hdr->length_low = lower_32_bits(mem_in_bytes); 1763 sub_type_hdr->length_high = upper_32_bits(mem_in_bytes); 1764 sub_type_hdr->proximity_domain = proximity_domain; 1765 1766 return 0; 1767 } 1768 1769 #ifdef CONFIG_X86_64 1770 static int kfd_fill_iolink_info_for_cpu(int numa_node_id, int *avail_size, 1771 uint32_t *num_entries, 1772 struct crat_subtype_iolink *sub_type_hdr) 1773 { 1774 int nid; 1775 struct cpuinfo_x86 *c = &cpu_data(0); 1776 uint8_t link_type; 1777 1778 if (c->x86_vendor == X86_VENDOR_AMD) 1779 link_type = CRAT_IOLINK_TYPE_HYPERTRANSPORT; 1780 else 1781 link_type = CRAT_IOLINK_TYPE_QPI_1_1; 1782 1783 *num_entries = 0; 1784 1785 /* Create IO links from this node to other CPU nodes */ 1786 for_each_online_node(nid) { 1787 if (nid == numa_node_id) /* node itself */ 1788 continue; 1789 1790 *avail_size -= sizeof(struct crat_subtype_iolink); 1791 if (*avail_size < 0) 1792 return -ENOMEM; 1793 1794 memset(sub_type_hdr, 0, sizeof(struct crat_subtype_iolink)); 1795 1796 /* Fill in subtype header data */ 1797 sub_type_hdr->type = CRAT_SUBTYPE_IOLINK_AFFINITY; 1798 sub_type_hdr->length = sizeof(struct crat_subtype_iolink); 1799 sub_type_hdr->flags = CRAT_SUBTYPE_FLAGS_ENABLED; 1800 1801 /* Fill in IO link data */ 1802 sub_type_hdr->proximity_domain_from = numa_node_id; 1803 sub_type_hdr->proximity_domain_to = nid; 1804 sub_type_hdr->io_interface_type = link_type; 1805 1806 (*num_entries)++; 1807 sub_type_hdr++; 1808 } 1809 1810 return 0; 1811 } 1812 #endif 1813 1814 /* kfd_create_vcrat_image_cpu - Create Virtual CRAT for CPU 1815 * 1816 * @pcrat_image: Fill in VCRAT for CPU 1817 * @size: [IN] allocated size of crat_image. 1818 * [OUT] actual size of data filled in crat_image 1819 */ 1820 static int kfd_create_vcrat_image_cpu(void *pcrat_image, size_t *size) 1821 { 1822 struct crat_header *crat_table = (struct crat_header *)pcrat_image; 1823 struct acpi_table_header *acpi_table; 1824 acpi_status status; 1825 struct crat_subtype_generic *sub_type_hdr; 1826 int avail_size = *size; 1827 int numa_node_id; 1828 #ifdef CONFIG_X86_64 1829 uint32_t entries = 0; 1830 #endif 1831 int ret = 0; 1832 1833 if (!pcrat_image) 1834 return -EINVAL; 1835 1836 /* Fill in CRAT Header. 1837 * Modify length and total_entries as subunits are added. 1838 */ 1839 avail_size -= sizeof(struct crat_header); 1840 if (avail_size < 0) 1841 return -ENOMEM; 1842 1843 memset(crat_table, 0, sizeof(struct crat_header)); 1844 memcpy(&crat_table->signature, CRAT_SIGNATURE, 1845 sizeof(crat_table->signature)); 1846 crat_table->length = sizeof(struct crat_header); 1847 1848 status = acpi_get_table("DSDT", 0, &acpi_table); 1849 if (status != AE_OK) 1850 pr_warn("DSDT table not found for OEM information\n"); 1851 else { 1852 crat_table->oem_revision = acpi_table->revision; 1853 memcpy(crat_table->oem_id, acpi_table->oem_id, 1854 CRAT_OEMID_LENGTH); 1855 memcpy(crat_table->oem_table_id, acpi_table->oem_table_id, 1856 CRAT_OEMTABLEID_LENGTH); 1857 acpi_put_table(acpi_table); 1858 } 1859 crat_table->total_entries = 0; 1860 crat_table->num_domains = 0; 1861 1862 sub_type_hdr = (struct crat_subtype_generic *)(crat_table+1); 1863 1864 for_each_online_node(numa_node_id) { 1865 if (kfd_numa_node_to_apic_id(numa_node_id) == -1) 1866 continue; 1867 1868 /* Fill in Subtype: Compute Unit */ 1869 ret = kfd_fill_cu_for_cpu(numa_node_id, &avail_size, 1870 crat_table->num_domains, 1871 (struct crat_subtype_computeunit *)sub_type_hdr); 1872 if (ret < 0) 1873 return ret; 1874 crat_table->length += sub_type_hdr->length; 1875 crat_table->total_entries++; 1876 1877 sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr + 1878 sub_type_hdr->length); 1879 1880 /* Fill in Subtype: Memory */ 1881 ret = kfd_fill_mem_info_for_cpu(numa_node_id, &avail_size, 1882 crat_table->num_domains, 1883 (struct crat_subtype_memory *)sub_type_hdr); 1884 if (ret < 0) 1885 return ret; 1886 crat_table->length += sub_type_hdr->length; 1887 crat_table->total_entries++; 1888 1889 sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr + 1890 sub_type_hdr->length); 1891 1892 /* Fill in Subtype: IO Link */ 1893 #ifdef CONFIG_X86_64 1894 ret = kfd_fill_iolink_info_for_cpu(numa_node_id, &avail_size, 1895 &entries, 1896 (struct crat_subtype_iolink *)sub_type_hdr); 1897 if (ret < 0) 1898 return ret; 1899 1900 if (entries) { 1901 crat_table->length += (sub_type_hdr->length * entries); 1902 crat_table->total_entries += entries; 1903 1904 sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr + 1905 sub_type_hdr->length * entries); 1906 } 1907 #else 1908 pr_info("IO link not available for non x86 platforms\n"); 1909 #endif 1910 1911 crat_table->num_domains++; 1912 } 1913 1914 /* TODO: Add cache Subtype for CPU. 1915 * Currently, CPU cache information is available in function 1916 * detect_cache_attributes(cpu) defined in the file 1917 * ./arch/x86/kernel/cpu/intel_cacheinfo.c. This function is not 1918 * exported and to get the same information the code needs to be 1919 * duplicated. 1920 */ 1921 1922 *size = crat_table->length; 1923 pr_info("Virtual CRAT table created for CPU\n"); 1924 1925 return 0; 1926 } 1927 1928 static int kfd_fill_gpu_memory_affinity(int *avail_size, 1929 struct kfd_dev *kdev, uint8_t type, uint64_t size, 1930 struct crat_subtype_memory *sub_type_hdr, 1931 uint32_t proximity_domain, 1932 const struct kfd_local_mem_info *local_mem_info) 1933 { 1934 *avail_size -= sizeof(struct crat_subtype_memory); 1935 if (*avail_size < 0) 1936 return -ENOMEM; 1937 1938 memset((void *)sub_type_hdr, 0, sizeof(struct crat_subtype_memory)); 1939 sub_type_hdr->type = CRAT_SUBTYPE_MEMORY_AFFINITY; 1940 sub_type_hdr->length = sizeof(struct crat_subtype_memory); 1941 sub_type_hdr->flags |= CRAT_SUBTYPE_FLAGS_ENABLED; 1942 1943 sub_type_hdr->proximity_domain = proximity_domain; 1944 1945 pr_debug("Fill gpu memory affinity - type 0x%x size 0x%llx\n", 1946 type, size); 1947 1948 sub_type_hdr->length_low = lower_32_bits(size); 1949 sub_type_hdr->length_high = upper_32_bits(size); 1950 1951 sub_type_hdr->width = local_mem_info->vram_width; 1952 sub_type_hdr->visibility_type = type; 1953 1954 return 0; 1955 } 1956 1957 #ifdef CONFIG_ACPI_NUMA 1958 static void kfd_find_numa_node_in_srat(struct kfd_dev *kdev) 1959 { 1960 struct acpi_table_header *table_header = NULL; 1961 struct acpi_subtable_header *sub_header = NULL; 1962 unsigned long table_end, subtable_len; 1963 u32 pci_id = pci_domain_nr(kdev->pdev->bus) << 16 | 1964 pci_dev_id(kdev->pdev); 1965 u32 bdf; 1966 acpi_status status; 1967 struct acpi_srat_cpu_affinity *cpu; 1968 struct acpi_srat_generic_affinity *gpu; 1969 int pxm = 0, max_pxm = 0; 1970 int numa_node = NUMA_NO_NODE; 1971 bool found = false; 1972 1973 /* Fetch the SRAT table from ACPI */ 1974 status = acpi_get_table(ACPI_SIG_SRAT, 0, &table_header); 1975 if (status == AE_NOT_FOUND) { 1976 pr_warn("SRAT table not found\n"); 1977 return; 1978 } else if (ACPI_FAILURE(status)) { 1979 const char *err = acpi_format_exception(status); 1980 pr_err("SRAT table error: %s\n", err); 1981 return; 1982 } 1983 1984 table_end = (unsigned long)table_header + table_header->length; 1985 1986 /* Parse all entries looking for a match. */ 1987 sub_header = (struct acpi_subtable_header *) 1988 ((unsigned long)table_header + 1989 sizeof(struct acpi_table_srat)); 1990 subtable_len = sub_header->length; 1991 1992 while (((unsigned long)sub_header) + subtable_len < table_end) { 1993 /* 1994 * If length is 0, break from this loop to avoid 1995 * infinite loop. 1996 */ 1997 if (subtable_len == 0) { 1998 pr_err("SRAT invalid zero length\n"); 1999 break; 2000 } 2001 2002 switch (sub_header->type) { 2003 case ACPI_SRAT_TYPE_CPU_AFFINITY: 2004 cpu = (struct acpi_srat_cpu_affinity *)sub_header; 2005 pxm = *((u32 *)cpu->proximity_domain_hi) << 8 | 2006 cpu->proximity_domain_lo; 2007 if (pxm > max_pxm) 2008 max_pxm = pxm; 2009 break; 2010 case ACPI_SRAT_TYPE_GENERIC_AFFINITY: 2011 gpu = (struct acpi_srat_generic_affinity *)sub_header; 2012 bdf = *((u16 *)(&gpu->device_handle[0])) << 16 | 2013 *((u16 *)(&gpu->device_handle[2])); 2014 if (bdf == pci_id) { 2015 found = true; 2016 numa_node = pxm_to_node(gpu->proximity_domain); 2017 } 2018 break; 2019 default: 2020 break; 2021 } 2022 2023 if (found) 2024 break; 2025 2026 sub_header = (struct acpi_subtable_header *) 2027 ((unsigned long)sub_header + subtable_len); 2028 subtable_len = sub_header->length; 2029 } 2030 2031 acpi_put_table(table_header); 2032 2033 /* Workaround bad cpu-gpu binding case */ 2034 if (found && (numa_node < 0 || 2035 numa_node > pxm_to_node(max_pxm))) 2036 numa_node = 0; 2037 2038 if (numa_node != NUMA_NO_NODE) 2039 set_dev_node(&kdev->pdev->dev, numa_node); 2040 } 2041 #endif 2042 2043 /* kfd_fill_gpu_direct_io_link - Fill in direct io link from GPU 2044 * to its NUMA node 2045 * @avail_size: Available size in the memory 2046 * @kdev - [IN] GPU device 2047 * @sub_type_hdr: Memory into which io link info will be filled in 2048 * @proximity_domain - proximity domain of the GPU node 2049 * 2050 * Return 0 if successful else return -ve value 2051 */ 2052 static int kfd_fill_gpu_direct_io_link_to_cpu(int *avail_size, 2053 struct kfd_dev *kdev, 2054 struct crat_subtype_iolink *sub_type_hdr, 2055 uint32_t proximity_domain) 2056 { 2057 *avail_size -= sizeof(struct crat_subtype_iolink); 2058 if (*avail_size < 0) 2059 return -ENOMEM; 2060 2061 memset((void *)sub_type_hdr, 0, sizeof(struct crat_subtype_iolink)); 2062 2063 /* Fill in subtype header data */ 2064 sub_type_hdr->type = CRAT_SUBTYPE_IOLINK_AFFINITY; 2065 sub_type_hdr->length = sizeof(struct crat_subtype_iolink); 2066 sub_type_hdr->flags |= CRAT_SUBTYPE_FLAGS_ENABLED; 2067 if (kfd_dev_is_large_bar(kdev)) 2068 sub_type_hdr->flags |= CRAT_IOLINK_FLAGS_BI_DIRECTIONAL; 2069 2070 /* Fill in IOLINK subtype. 2071 * TODO: Fill-in other fields of iolink subtype 2072 */ 2073 if (kdev->adev->gmc.xgmi.connected_to_cpu) { 2074 /* 2075 * with host gpu xgmi link, host can access gpu memory whether 2076 * or not pcie bar type is large, so always create bidirectional 2077 * io link. 2078 */ 2079 sub_type_hdr->flags |= CRAT_IOLINK_FLAGS_BI_DIRECTIONAL; 2080 sub_type_hdr->io_interface_type = CRAT_IOLINK_TYPE_XGMI; 2081 sub_type_hdr->num_hops_xgmi = 1; 2082 if (KFD_GC_VERSION(kdev) == IP_VERSION(9, 4, 2)) { 2083 sub_type_hdr->minimum_bandwidth_mbs = 2084 amdgpu_amdkfd_get_xgmi_bandwidth_mbytes( 2085 kdev->adev, NULL, true); 2086 sub_type_hdr->maximum_bandwidth_mbs = 2087 sub_type_hdr->minimum_bandwidth_mbs; 2088 } 2089 } else { 2090 sub_type_hdr->io_interface_type = CRAT_IOLINK_TYPE_PCIEXPRESS; 2091 sub_type_hdr->minimum_bandwidth_mbs = 2092 amdgpu_amdkfd_get_pcie_bandwidth_mbytes(kdev->adev, true); 2093 sub_type_hdr->maximum_bandwidth_mbs = 2094 amdgpu_amdkfd_get_pcie_bandwidth_mbytes(kdev->adev, false); 2095 } 2096 2097 sub_type_hdr->proximity_domain_from = proximity_domain; 2098 2099 #ifdef CONFIG_ACPI_NUMA 2100 if (kdev->pdev->dev.numa_node == NUMA_NO_NODE) 2101 kfd_find_numa_node_in_srat(kdev); 2102 #endif 2103 #ifdef CONFIG_NUMA 2104 if (kdev->pdev->dev.numa_node == NUMA_NO_NODE) 2105 sub_type_hdr->proximity_domain_to = 0; 2106 else 2107 sub_type_hdr->proximity_domain_to = kdev->pdev->dev.numa_node; 2108 #else 2109 sub_type_hdr->proximity_domain_to = 0; 2110 #endif 2111 return 0; 2112 } 2113 2114 static int kfd_fill_gpu_xgmi_link_to_gpu(int *avail_size, 2115 struct kfd_dev *kdev, 2116 struct kfd_dev *peer_kdev, 2117 struct crat_subtype_iolink *sub_type_hdr, 2118 uint32_t proximity_domain_from, 2119 uint32_t proximity_domain_to) 2120 { 2121 *avail_size -= sizeof(struct crat_subtype_iolink); 2122 if (*avail_size < 0) 2123 return -ENOMEM; 2124 2125 memset((void *)sub_type_hdr, 0, sizeof(struct crat_subtype_iolink)); 2126 2127 sub_type_hdr->type = CRAT_SUBTYPE_IOLINK_AFFINITY; 2128 sub_type_hdr->length = sizeof(struct crat_subtype_iolink); 2129 sub_type_hdr->flags |= CRAT_SUBTYPE_FLAGS_ENABLED | 2130 CRAT_IOLINK_FLAGS_BI_DIRECTIONAL; 2131 2132 sub_type_hdr->io_interface_type = CRAT_IOLINK_TYPE_XGMI; 2133 sub_type_hdr->proximity_domain_from = proximity_domain_from; 2134 sub_type_hdr->proximity_domain_to = proximity_domain_to; 2135 sub_type_hdr->num_hops_xgmi = 2136 amdgpu_amdkfd_get_xgmi_hops_count(kdev->adev, peer_kdev->adev); 2137 sub_type_hdr->maximum_bandwidth_mbs = 2138 amdgpu_amdkfd_get_xgmi_bandwidth_mbytes(kdev->adev, peer_kdev->adev, false); 2139 sub_type_hdr->minimum_bandwidth_mbs = sub_type_hdr->maximum_bandwidth_mbs ? 2140 amdgpu_amdkfd_get_xgmi_bandwidth_mbytes(kdev->adev, NULL, true) : 0; 2141 2142 return 0; 2143 } 2144 2145 /* kfd_create_vcrat_image_gpu - Create Virtual CRAT for CPU 2146 * 2147 * @pcrat_image: Fill in VCRAT for GPU 2148 * @size: [IN] allocated size of crat_image. 2149 * [OUT] actual size of data filled in crat_image 2150 */ 2151 static int kfd_create_vcrat_image_gpu(void *pcrat_image, 2152 size_t *size, struct kfd_dev *kdev, 2153 uint32_t proximity_domain) 2154 { 2155 struct crat_header *crat_table = (struct crat_header *)pcrat_image; 2156 struct crat_subtype_generic *sub_type_hdr; 2157 struct kfd_local_mem_info local_mem_info; 2158 struct kfd_topology_device *peer_dev; 2159 struct crat_subtype_computeunit *cu; 2160 struct kfd_cu_info cu_info; 2161 int avail_size = *size; 2162 uint32_t total_num_of_cu; 2163 int num_of_cache_entries = 0; 2164 int cache_mem_filled = 0; 2165 uint32_t nid = 0; 2166 int ret = 0; 2167 2168 if (!pcrat_image || avail_size < VCRAT_SIZE_FOR_GPU) 2169 return -EINVAL; 2170 2171 /* Fill the CRAT Header. 2172 * Modify length and total_entries as subunits are added. 2173 */ 2174 avail_size -= sizeof(struct crat_header); 2175 if (avail_size < 0) 2176 return -ENOMEM; 2177 2178 memset(crat_table, 0, sizeof(struct crat_header)); 2179 2180 memcpy(&crat_table->signature, CRAT_SIGNATURE, 2181 sizeof(crat_table->signature)); 2182 /* Change length as we add more subtypes*/ 2183 crat_table->length = sizeof(struct crat_header); 2184 crat_table->num_domains = 1; 2185 crat_table->total_entries = 0; 2186 2187 /* Fill in Subtype: Compute Unit 2188 * First fill in the sub type header and then sub type data 2189 */ 2190 avail_size -= sizeof(struct crat_subtype_computeunit); 2191 if (avail_size < 0) 2192 return -ENOMEM; 2193 2194 sub_type_hdr = (struct crat_subtype_generic *)(crat_table + 1); 2195 memset(sub_type_hdr, 0, sizeof(struct crat_subtype_computeunit)); 2196 2197 sub_type_hdr->type = CRAT_SUBTYPE_COMPUTEUNIT_AFFINITY; 2198 sub_type_hdr->length = sizeof(struct crat_subtype_computeunit); 2199 sub_type_hdr->flags = CRAT_SUBTYPE_FLAGS_ENABLED; 2200 2201 /* Fill CU subtype data */ 2202 cu = (struct crat_subtype_computeunit *)sub_type_hdr; 2203 cu->flags |= CRAT_CU_FLAGS_GPU_PRESENT; 2204 cu->proximity_domain = proximity_domain; 2205 2206 amdgpu_amdkfd_get_cu_info(kdev->adev, &cu_info); 2207 cu->num_simd_per_cu = cu_info.simd_per_cu; 2208 cu->num_simd_cores = cu_info.simd_per_cu * cu_info.cu_active_number; 2209 cu->max_waves_simd = cu_info.max_waves_per_simd; 2210 2211 cu->wave_front_size = cu_info.wave_front_size; 2212 cu->array_count = cu_info.num_shader_arrays_per_engine * 2213 cu_info.num_shader_engines; 2214 total_num_of_cu = (cu->array_count * cu_info.num_cu_per_sh); 2215 cu->processor_id_low = get_and_inc_gpu_processor_id(total_num_of_cu); 2216 cu->num_cu_per_array = cu_info.num_cu_per_sh; 2217 cu->max_slots_scatch_cu = cu_info.max_scratch_slots_per_cu; 2218 cu->num_banks = cu_info.num_shader_engines; 2219 cu->lds_size_in_kb = cu_info.lds_size; 2220 2221 cu->hsa_capability = 0; 2222 2223 /* Check if this node supports IOMMU. During parsing this flag will 2224 * translate to HSA_CAP_ATS_PRESENT 2225 */ 2226 if (!kfd_iommu_check_device(kdev)) 2227 cu->hsa_capability |= CRAT_CU_FLAGS_IOMMU_PRESENT; 2228 2229 crat_table->length += sub_type_hdr->length; 2230 crat_table->total_entries++; 2231 2232 /* Fill in Subtype: Memory. Only on systems with large BAR (no 2233 * private FB), report memory as public. On other systems 2234 * report the total FB size (public+private) as a single 2235 * private heap. 2236 */ 2237 local_mem_info = kdev->local_mem_info; 2238 sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr + 2239 sub_type_hdr->length); 2240 2241 if (debug_largebar) 2242 local_mem_info.local_mem_size_private = 0; 2243 2244 if (local_mem_info.local_mem_size_private == 0) 2245 ret = kfd_fill_gpu_memory_affinity(&avail_size, 2246 kdev, HSA_MEM_HEAP_TYPE_FB_PUBLIC, 2247 local_mem_info.local_mem_size_public, 2248 (struct crat_subtype_memory *)sub_type_hdr, 2249 proximity_domain, 2250 &local_mem_info); 2251 else 2252 ret = kfd_fill_gpu_memory_affinity(&avail_size, 2253 kdev, HSA_MEM_HEAP_TYPE_FB_PRIVATE, 2254 local_mem_info.local_mem_size_public + 2255 local_mem_info.local_mem_size_private, 2256 (struct crat_subtype_memory *)sub_type_hdr, 2257 proximity_domain, 2258 &local_mem_info); 2259 if (ret < 0) 2260 return ret; 2261 2262 crat_table->length += sizeof(struct crat_subtype_memory); 2263 crat_table->total_entries++; 2264 2265 /* TODO: Fill in cache information. This information is NOT readily 2266 * available in KGD 2267 */ 2268 sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr + 2269 sub_type_hdr->length); 2270 ret = kfd_fill_gpu_cache_info(kdev, cu->processor_id_low, 2271 avail_size, 2272 &cu_info, 2273 (struct crat_subtype_cache *)sub_type_hdr, 2274 &cache_mem_filled, 2275 &num_of_cache_entries); 2276 2277 if (ret < 0) 2278 return ret; 2279 2280 crat_table->length += cache_mem_filled; 2281 crat_table->total_entries += num_of_cache_entries; 2282 avail_size -= cache_mem_filled; 2283 2284 /* Fill in Subtype: IO_LINKS 2285 * Only direct links are added here which is Link from GPU to 2286 * to its NUMA node. Indirect links are added by userspace. 2287 */ 2288 sub_type_hdr = (typeof(sub_type_hdr))((char *)sub_type_hdr + 2289 cache_mem_filled); 2290 ret = kfd_fill_gpu_direct_io_link_to_cpu(&avail_size, kdev, 2291 (struct crat_subtype_iolink *)sub_type_hdr, proximity_domain); 2292 2293 if (ret < 0) 2294 return ret; 2295 2296 crat_table->length += sub_type_hdr->length; 2297 crat_table->total_entries++; 2298 2299 2300 /* Fill in Subtype: IO_LINKS 2301 * Direct links from GPU to other GPUs through xGMI. 2302 * We will loop GPUs that already be processed (with lower value 2303 * of proximity_domain), add the link for the GPUs with same 2304 * hive id (from this GPU to other GPU) . The reversed iolink 2305 * (from other GPU to this GPU) will be added 2306 * in kfd_parse_subtype_iolink. 2307 */ 2308 if (kdev->hive_id) { 2309 for (nid = 0; nid < proximity_domain; ++nid) { 2310 peer_dev = kfd_topology_device_by_proximity_domain_no_lock(nid); 2311 if (!peer_dev->gpu) 2312 continue; 2313 if (peer_dev->gpu->hive_id != kdev->hive_id) 2314 continue; 2315 sub_type_hdr = (typeof(sub_type_hdr))( 2316 (char *)sub_type_hdr + 2317 sizeof(struct crat_subtype_iolink)); 2318 ret = kfd_fill_gpu_xgmi_link_to_gpu( 2319 &avail_size, kdev, peer_dev->gpu, 2320 (struct crat_subtype_iolink *)sub_type_hdr, 2321 proximity_domain, nid); 2322 if (ret < 0) 2323 return ret; 2324 crat_table->length += sub_type_hdr->length; 2325 crat_table->total_entries++; 2326 } 2327 } 2328 *size = crat_table->length; 2329 pr_info("Virtual CRAT table created for GPU\n"); 2330 2331 return ret; 2332 } 2333 2334 /* kfd_create_crat_image_virtual - Allocates memory for CRAT image and 2335 * creates a Virtual CRAT (VCRAT) image 2336 * 2337 * NOTE: Call kfd_destroy_crat_image to free CRAT image memory 2338 * 2339 * @crat_image: VCRAT image created because ACPI does not have a 2340 * CRAT for this device 2341 * @size: [OUT] size of virtual crat_image 2342 * @flags: COMPUTE_UNIT_CPU - Create VCRAT for CPU device 2343 * COMPUTE_UNIT_GPU - Create VCRAT for GPU 2344 * (COMPUTE_UNIT_CPU | COMPUTE_UNIT_GPU) - Create VCRAT for APU 2345 * -- this option is not currently implemented. 2346 * The assumption is that all AMD APUs will have CRAT 2347 * @kdev: Valid kfd_device required if flags contain COMPUTE_UNIT_GPU 2348 * 2349 * Return 0 if successful else return -ve value 2350 */ 2351 int kfd_create_crat_image_virtual(void **crat_image, size_t *size, 2352 int flags, struct kfd_dev *kdev, 2353 uint32_t proximity_domain) 2354 { 2355 void *pcrat_image = NULL; 2356 int ret = 0, num_nodes; 2357 size_t dyn_size; 2358 2359 if (!crat_image) 2360 return -EINVAL; 2361 2362 *crat_image = NULL; 2363 2364 /* Allocate the CPU Virtual CRAT size based on the number of online 2365 * nodes. Allocate VCRAT_SIZE_FOR_GPU for GPU virtual CRAT image. 2366 * This should cover all the current conditions. A check is put not 2367 * to overwrite beyond allocated size for GPUs 2368 */ 2369 switch (flags) { 2370 case COMPUTE_UNIT_CPU: 2371 num_nodes = num_online_nodes(); 2372 dyn_size = sizeof(struct crat_header) + 2373 num_nodes * (sizeof(struct crat_subtype_computeunit) + 2374 sizeof(struct crat_subtype_memory) + 2375 (num_nodes - 1) * sizeof(struct crat_subtype_iolink)); 2376 pcrat_image = kvmalloc(dyn_size, GFP_KERNEL); 2377 if (!pcrat_image) 2378 return -ENOMEM; 2379 *size = dyn_size; 2380 pr_debug("CRAT size is %ld", dyn_size); 2381 ret = kfd_create_vcrat_image_cpu(pcrat_image, size); 2382 break; 2383 case COMPUTE_UNIT_GPU: 2384 if (!kdev) 2385 return -EINVAL; 2386 pcrat_image = kvmalloc(VCRAT_SIZE_FOR_GPU, GFP_KERNEL); 2387 if (!pcrat_image) 2388 return -ENOMEM; 2389 *size = VCRAT_SIZE_FOR_GPU; 2390 ret = kfd_create_vcrat_image_gpu(pcrat_image, size, kdev, 2391 proximity_domain); 2392 break; 2393 case (COMPUTE_UNIT_CPU | COMPUTE_UNIT_GPU): 2394 /* TODO: */ 2395 ret = -EINVAL; 2396 pr_err("VCRAT not implemented for APU\n"); 2397 break; 2398 default: 2399 ret = -EINVAL; 2400 } 2401 2402 if (!ret) 2403 *crat_image = pcrat_image; 2404 else 2405 kvfree(pcrat_image); 2406 2407 return ret; 2408 } 2409 2410 2411 /* kfd_destroy_crat_image 2412 * 2413 * @crat_image: [IN] - crat_image from kfd_create_crat_image_xxx(..) 2414 * 2415 */ 2416 void kfd_destroy_crat_image(void *crat_image) 2417 { 2418 kvfree(crat_image); 2419 } 2420