drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c

   1 /*
   2  * Copyright 2014 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  */
  22
  23 #include "amdgpu_amdkfd.h"
  24 #include "amd_pcie.h"
  25 #include "amd_shared.h"
  26
  27 #include "amdgpu.h"
  28 #include "amdgpu_gfx.h"
  29 #include "amdgpu_dma_buf.h"
  30 #include <linux/module.h>
  31 #include <linux/dma-buf.h>
  32 #include "amdgpu_xgmi.h"
  33 #include <uapi/linux/kfd_ioctl.h>
  34
  35 /* Total memory size in system memory and all GPU VRAM. Used to
  36  * estimate worst case amount of memory to reserve for page tables
  37  */
  38 uint64_t amdgpu_amdkfd_total_mem_size;
  39
  40 static bool kfd_initialized;
  41
  42 int amdgpu_amdkfd_init(void)
  43 {
  44         struct sysinfo si;
  45         int ret;
  46
  47         si_meminfo(&si);
  48         amdgpu_amdkfd_total_mem_size = si.freeram - si.freehigh;
  49         amdgpu_amdkfd_total_mem_size *= si.mem_unit;
  50
  51         ret = kgd2kfd_init();
  52         amdgpu_amdkfd_gpuvm_init_mem_limits();
  53         kfd_initialized = !ret;
  54
  55         return ret;
  56 }
  57
  58 void amdgpu_amdkfd_fini(void)
  59 {
  60         if (kfd_initialized) {
  61                 kgd2kfd_exit();
  62                 kfd_initialized = false;
  63         }
  64 }
  65
  66 void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev)
  67 {
  68         bool vf = amdgpu_sriov_vf(adev);
  69
  70         if (!kfd_initialized)
  71                 return;
  72
  73         adev->kfd.dev = kgd2kfd_probe((struct kgd_dev *)adev,
  74                                       adev->pdev, adev->asic_type, vf);
  75
  76         if (adev->kfd.dev)
  77                 amdgpu_amdkfd_total_mem_size += adev->gmc.real_vram_size;
  78 }
  79
  80 /**
  81  * amdgpu_doorbell_get_kfd_info - Report doorbell configuration required to
  82  *                                setup amdkfd
  83  *
  84  * @adev: amdgpu_device pointer
  85  * @aperture_base: output returning doorbell aperture base physical address
  86  * @aperture_size: output returning doorbell aperture size in bytes
  87  * @start_offset: output returning # of doorbell bytes reserved for amdgpu.
  88  *
  89  * amdgpu and amdkfd share the doorbell aperture. amdgpu sets it up,
  90  * takes doorbells required for its own rings and reports the setup to amdkfd.
  91  * amdgpu reserved doorbells are at the start of the doorbell aperture.
  92  */
  93 static void amdgpu_doorbell_get_kfd_info(struct amdgpu_device *adev,
  94                                          phys_addr_t *aperture_base,
  95                                          size_t *aperture_size,
  96                                          size_t *start_offset)
  97 {
  98         /*
  99          * The first num_doorbells are used by amdgpu.
 100          * amdkfd takes whatever's left in the aperture.
 101          */
 102         if (adev->doorbell.size > adev->doorbell.num_doorbells * sizeof(u32)) {
 103                 *aperture_base = adev->doorbell.base;
 104                 *aperture_size = adev->doorbell.size;
 105                 *start_offset = adev->doorbell.num_doorbells * sizeof(u32);
 106         } else {
 107                 *aperture_base = 0;
 108                 *aperture_size = 0;
 109                 *start_offset = 0;
 110         }
 111 }
 112
 113 void amdgpu_amdkfd_device_init(struct amdgpu_device *adev)
 114 {
 115         int i;
 116         int last_valid_bit;
 117
 118         if (adev->kfd.dev) {
 119                 struct kgd2kfd_shared_resources gpu_resources = {
 120                         .compute_vmid_bitmap =
 121                                 ((1 << AMDGPU_NUM_VMID) - 1) -
 122                                 ((1 << adev->vm_manager.first_kfd_vmid) - 1),
 123                         .num_pipe_per_mec = adev->gfx.mec.num_pipe_per_mec,
 124                         .num_queue_per_pipe = adev->gfx.mec.num_queue_per_pipe,
 125                         .gpuvm_size = min(adev->vm_manager.max_pfn
 126                                           << AMDGPU_GPU_PAGE_SHIFT,
 127                                           AMDGPU_GMC_HOLE_START),
 128                         .drm_render_minor = adev_to_drm(adev)->render->index,
 129                         .sdma_doorbell_idx = adev->doorbell_index.sdma_engine,
 130
 131                 };
 132
 133                 /* this is going to have a few of the MSBs set that we need to
 134                  * clear
 135                  */
 136                 bitmap_complement(gpu_resources.cp_queue_bitmap,
 137                                   adev->gfx.mec.queue_bitmap,
 138                                   KGD_MAX_QUEUES);
 139
 140                 /* According to linux/bitmap.h we shouldn't use bitmap_clear if
 141                  * nbits is not compile time constant
 142                  */
 143                 last_valid_bit = 1 /* only first MEC can have compute queues */
 144                                 * adev->gfx.mec.num_pipe_per_mec
 145                                 * adev->gfx.mec.num_queue_per_pipe;
 146                 for (i = last_valid_bit; i < KGD_MAX_QUEUES; ++i)
 147                         clear_bit(i, gpu_resources.cp_queue_bitmap);
 148
 149                 amdgpu_doorbell_get_kfd_info(adev,
 150                                 &gpu_resources.doorbell_physical_address,
 151                                 &gpu_resources.doorbell_aperture_size,
 152                                 &gpu_resources.doorbell_start_offset);
 153
 154                 /* Since SOC15, BIF starts to statically use the
 155                  * lower 12 bits of doorbell addresses for routing
 156                  * based on settings in registers like
 157                  * SDMA0_DOORBELL_RANGE etc..
 158                  * In order to route a doorbell to CP engine, the lower
 159                  * 12 bits of its address has to be outside the range
 160                  * set for SDMA, VCN, and IH blocks.
 161                  */
 162                 if (adev->asic_type >= CHIP_VEGA10) {
 163                         gpu_resources.non_cp_doorbells_start =
 164                                         adev->doorbell_index.first_non_cp;
 165                         gpu_resources.non_cp_doorbells_end =
 166                                         adev->doorbell_index.last_non_cp;
 167                 }
 168
 169                 adev->kfd.init_complete = kgd2kfd_device_init(adev->kfd.dev,
 170                                                 adev_to_drm(adev), &gpu_resources);
 171         }
 172 }
 173
 174 void amdgpu_amdkfd_device_fini_sw(struct amdgpu_device *adev)
 175 {
 176         if (adev->kfd.dev) {
 177                 kgd2kfd_device_exit(adev->kfd.dev);
 178                 adev->kfd.dev = NULL;
 179         }
 180 }
 181
 182 void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev,
 183                 const void *ih_ring_entry)
 184 {
 185         if (adev->kfd.dev)
 186                 kgd2kfd_interrupt(adev->kfd.dev, ih_ring_entry);
 187 }
 188
 189 void amdgpu_amdkfd_suspend(struct amdgpu_device *adev, bool run_pm)
 190 {
 191         if (adev->kfd.dev)
 192                 kgd2kfd_suspend(adev->kfd.dev, run_pm);
 193 }
 194
 195 int amdgpu_amdkfd_resume(struct amdgpu_device *adev, bool run_pm)
 196 {
 197         int r = 0;
 198
 199         if (adev->kfd.dev)
 200                 r = kgd2kfd_resume(adev->kfd.dev, run_pm);
 201
 202         return r;
 203 }
 204
 205 int amdgpu_amdkfd_pre_reset(struct amdgpu_device *adev)
 206 {
 207         int r = 0;
 208
 209         if (adev->kfd.dev)
 210                 r = kgd2kfd_pre_reset(adev->kfd.dev);
 211
 212         return r;
 213 }
 214
 215 int amdgpu_amdkfd_post_reset(struct amdgpu_device *adev)
 216 {
 217         int r = 0;
 218
 219         if (adev->kfd.dev)
 220                 r = kgd2kfd_post_reset(adev->kfd.dev);
 221
 222         return r;
 223 }
 224
 225 void amdgpu_amdkfd_gpu_reset(struct kgd_dev *kgd)
 226 {
 227         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 228
 229         if (amdgpu_device_should_recover_gpu(adev))
 230                 amdgpu_device_gpu_recover(adev, NULL);
 231 }
 232
 233 int amdgpu_amdkfd_alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
 234                                 void **mem_obj, uint64_t *gpu_addr,
 235                                 void **cpu_ptr, bool cp_mqd_gfx9)
 236 {
 237         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 238         struct amdgpu_bo *bo = NULL;
 239         struct amdgpu_bo_param bp;
 240         int r;
 241         void *cpu_ptr_tmp = NULL;
 242
 243         memset(&bp, 0, sizeof(bp));
 244         bp.size = size;
 245         bp.byte_align = PAGE_SIZE;
 246         bp.domain = AMDGPU_GEM_DOMAIN_GTT;
 247         bp.flags = AMDGPU_GEM_CREATE_CPU_GTT_USWC;
 248         bp.type = ttm_bo_type_kernel;
 249         bp.resv = NULL;
 250         bp.bo_ptr_size = sizeof(struct amdgpu_bo);
 251
 252         if (cp_mqd_gfx9)
 253                 bp.flags |= AMDGPU_GEM_CREATE_CP_MQD_GFX9;
 254
 255         r = amdgpu_bo_create(adev, &bp, &bo);
 256         if (r) {
 257                 dev_err(adev->dev,
 258                         "failed to allocate BO for amdkfd (%d)\n", r);
 259                 return r;
 260         }
 261
 262         /* map the buffer */
 263         r = amdgpu_bo_reserve(bo, true);
 264         if (r) {
 265                 dev_err(adev->dev, "(%d) failed to reserve bo for amdkfd\n", r);
 266                 goto allocate_mem_reserve_bo_failed;
 267         }
 268
 269         r = amdgpu_bo_pin(bo, AMDGPU_GEM_DOMAIN_GTT);
 270         if (r) {
 271                 dev_err(adev->dev, "(%d) failed to pin bo for amdkfd\n", r);
 272                 goto allocate_mem_pin_bo_failed;
 273         }
 274
 275         r = amdgpu_ttm_alloc_gart(&bo->tbo);
 276         if (r) {
 277                 dev_err(adev->dev, "%p bind failed\n", bo);
 278                 goto allocate_mem_kmap_bo_failed;
 279         }
 280
 281         r = amdgpu_bo_kmap(bo, &cpu_ptr_tmp);
 282         if (r) {
 283                 dev_err(adev->dev,
 284                         "(%d) failed to map bo to kernel for amdkfd\n", r);
 285                 goto allocate_mem_kmap_bo_failed;
 286         }
 287
 288         *mem_obj = bo;
 289         *gpu_addr = amdgpu_bo_gpu_offset(bo);
 290         *cpu_ptr = cpu_ptr_tmp;
 291
 292         amdgpu_bo_unreserve(bo);
 293
 294         return 0;
 295
 296 allocate_mem_kmap_bo_failed:
 297         amdgpu_bo_unpin(bo);
 298 allocate_mem_pin_bo_failed:
 299         amdgpu_bo_unreserve(bo);
 300 allocate_mem_reserve_bo_failed:
 301         amdgpu_bo_unref(&bo);
 302
 303         return r;
 304 }
 305
 306 void amdgpu_amdkfd_free_gtt_mem(struct kgd_dev *kgd, void *mem_obj)
 307 {
 308         struct amdgpu_bo *bo = (struct amdgpu_bo *) mem_obj;
 309
 310         amdgpu_bo_reserve(bo, true);
 311         amdgpu_bo_kunmap(bo);
 312         amdgpu_bo_unpin(bo);
 313         amdgpu_bo_unreserve(bo);
 314         amdgpu_bo_unref(&(bo));
 315 }
 316
 317 int amdgpu_amdkfd_alloc_gws(struct kgd_dev *kgd, size_t size,
 318                                 void **mem_obj)
 319 {
 320         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 321         struct amdgpu_bo *bo = NULL;
 322         struct amdgpu_bo_user *ubo;
 323         struct amdgpu_bo_param bp;
 324         int r;
 325
 326         memset(&bp, 0, sizeof(bp));
 327         bp.size = size;
 328         bp.byte_align = 1;
 329         bp.domain = AMDGPU_GEM_DOMAIN_GWS;
 330         bp.flags = AMDGPU_GEM_CREATE_NO_CPU_ACCESS;
 331         bp.type = ttm_bo_type_device;
 332         bp.resv = NULL;
 333         bp.bo_ptr_size = sizeof(struct amdgpu_bo);
 334
 335         r = amdgpu_bo_create_user(adev, &bp, &ubo);
 336         if (r) {
 337                 dev_err(adev->dev,
 338                         "failed to allocate gws BO for amdkfd (%d)\n", r);
 339                 return r;
 340         }
 341
 342         bo = &ubo->bo;
 343         *mem_obj = bo;
 344         return 0;
 345 }
 346
 347 void amdgpu_amdkfd_free_gws(struct kgd_dev *kgd, void *mem_obj)
 348 {
 349         struct amdgpu_bo *bo = (struct amdgpu_bo *)mem_obj;
 350
 351         amdgpu_bo_unref(&bo);
 352 }
 353
 354 uint32_t amdgpu_amdkfd_get_fw_version(struct kgd_dev *kgd,
 355                                       enum kgd_engine_type type)
 356 {
 357         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 358
 359         switch (type) {
 360         case KGD_ENGINE_PFP:
 361                 return adev->gfx.pfp_fw_version;
 362
 363         case KGD_ENGINE_ME:
 364                 return adev->gfx.me_fw_version;
 365
 366         case KGD_ENGINE_CE:
 367                 return adev->gfx.ce_fw_version;
 368
 369         case KGD_ENGINE_MEC1:
 370                 return adev->gfx.mec_fw_version;
 371
 372         case KGD_ENGINE_MEC2:
 373                 return adev->gfx.mec2_fw_version;
 374
 375         case KGD_ENGINE_RLC:
 376                 return adev->gfx.rlc_fw_version;
 377
 378         case KGD_ENGINE_SDMA1:
 379                 return adev->sdma.instance[0].fw_version;
 380
 381         case KGD_ENGINE_SDMA2:
 382                 return adev->sdma.instance[1].fw_version;
 383
 384         default:
 385                 return 0;
 386         }
 387
 388         return 0;
 389 }
 390
 391 void amdgpu_amdkfd_get_local_mem_info(struct kgd_dev *kgd,
 392                                       struct kfd_local_mem_info *mem_info)
 393 {
 394         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 395
 396         memset(mem_info, 0, sizeof(*mem_info));
 397
 398         mem_info->local_mem_size_public = adev->gmc.visible_vram_size;
 399         mem_info->local_mem_size_private = adev->gmc.real_vram_size -
 400                                                 adev->gmc.visible_vram_size;
 401
 402         mem_info->vram_width = adev->gmc.vram_width;
 403
 404         pr_debug("Address base: %pap public 0x%llx private 0x%llx\n",
 405                         &adev->gmc.aper_base,
 406                         mem_info->local_mem_size_public,
 407                         mem_info->local_mem_size_private);
 408
 409         if (amdgpu_sriov_vf(adev))
 410                 mem_info->mem_clk_max = adev->clock.default_mclk / 100;
 411         else if (adev->pm.dpm_enabled) {
 412                 if (amdgpu_emu_mode == 1)
 413                         mem_info->mem_clk_max = 0;
 414                 else
 415                         mem_info->mem_clk_max = amdgpu_dpm_get_mclk(adev, false) / 100;
 416         } else
 417                 mem_info->mem_clk_max = 100;
 418 }
 419
 420 uint64_t amdgpu_amdkfd_get_gpu_clock_counter(struct kgd_dev *kgd)
 421 {
 422         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 423
 424         if (adev->gfx.funcs->get_gpu_clock_counter)
 425                 return adev->gfx.funcs->get_gpu_clock_counter(adev);
 426         return 0;
 427 }
 428
 429 uint32_t amdgpu_amdkfd_get_max_engine_clock_in_mhz(struct kgd_dev *kgd)
 430 {
 431         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 432
 433         /* the sclk is in quantas of 10kHz */
 434         if (amdgpu_sriov_vf(adev))
 435                 return adev->clock.default_sclk / 100;
 436         else if (adev->pm.dpm_enabled)
 437                 return amdgpu_dpm_get_sclk(adev, false) / 100;
 438         else
 439                 return 100;
 440 }
 441
 442 void amdgpu_amdkfd_get_cu_info(struct kgd_dev *kgd, struct kfd_cu_info *cu_info)
 443 {
 444         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 445         struct amdgpu_cu_info acu_info = adev->gfx.cu_info;
 446
 447         memset(cu_info, 0, sizeof(*cu_info));
 448         if (sizeof(cu_info->cu_bitmap) != sizeof(acu_info.bitmap))
 449                 return;
 450
 451         cu_info->cu_active_number = acu_info.number;
 452         cu_info->cu_ao_mask = acu_info.ao_cu_mask;
 453         memcpy(&cu_info->cu_bitmap[0], &acu_info.bitmap[0],
 454                sizeof(acu_info.bitmap));
 455         cu_info->num_shader_engines = adev->gfx.config.max_shader_engines;
 456         cu_info->num_shader_arrays_per_engine = adev->gfx.config.max_sh_per_se;
 457         cu_info->num_cu_per_sh = adev->gfx.config.max_cu_per_sh;
 458         cu_info->simd_per_cu = acu_info.simd_per_cu;
 459         cu_info->max_waves_per_simd = acu_info.max_waves_per_simd;
 460         cu_info->wave_front_size = acu_info.wave_front_size;
 461         cu_info->max_scratch_slots_per_cu = acu_info.max_scratch_slots_per_cu;
 462         cu_info->lds_size = acu_info.lds_size;
 463 }
 464
 465 int amdgpu_amdkfd_get_dmabuf_info(struct kgd_dev *kgd, int dma_buf_fd,
 466                                   struct kgd_dev **dma_buf_kgd,
 467                                   uint64_t *bo_size, void *metadata_buffer,
 468                                   size_t buffer_size, uint32_t *metadata_size,
 469                                   uint32_t *flags)
 470 {
 471         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 472         struct dma_buf *dma_buf;
 473         struct drm_gem_object *obj;
 474         struct amdgpu_bo *bo;
 475         uint64_t metadata_flags;
 476         int r = -EINVAL;
 477
 478         dma_buf = dma_buf_get(dma_buf_fd);
 479         if (IS_ERR(dma_buf))
 480                 return PTR_ERR(dma_buf);
 481
 482         if (dma_buf->ops != &amdgpu_dmabuf_ops)
 483                 /* Can't handle non-graphics buffers */
 484                 goto out_put;
 485
 486         obj = dma_buf->priv;
 487         if (obj->dev->driver != adev_to_drm(adev)->driver)
 488                 /* Can't handle buffers from different drivers */
 489                 goto out_put;
 490
 491         adev = drm_to_adev(obj->dev);
 492         bo = gem_to_amdgpu_bo(obj);
 493         if (!(bo->preferred_domains & (AMDGPU_GEM_DOMAIN_VRAM |
 494                                     AMDGPU_GEM_DOMAIN_GTT)))
 495                 /* Only VRAM and GTT BOs are supported */
 496                 goto out_put;
 497
 498         r = 0;
 499         if (dma_buf_kgd)
 500                 *dma_buf_kgd = (struct kgd_dev *)adev;
 501         if (bo_size)
 502                 *bo_size = amdgpu_bo_size(bo);
 503         if (metadata_buffer)
 504                 r = amdgpu_bo_get_metadata(bo, metadata_buffer, buffer_size,
 505                                            metadata_size, &metadata_flags);
 506         if (flags) {
 507                 *flags = (bo->preferred_domains & AMDGPU_GEM_DOMAIN_VRAM) ?
 508                                 KFD_IOC_ALLOC_MEM_FLAGS_VRAM
 509                                 : KFD_IOC_ALLOC_MEM_FLAGS_GTT;
 510
 511                 if (bo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)
 512                         *flags |= KFD_IOC_ALLOC_MEM_FLAGS_PUBLIC;
 513         }
 514
 515 out_put:
 516         dma_buf_put(dma_buf);
 517         return r;
 518 }
 519
 520 uint64_t amdgpu_amdkfd_get_vram_usage(struct kgd_dev *kgd)
 521 {
 522         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 523         struct ttm_resource_manager *vram_man = ttm_manager_type(&adev->mman.bdev, TTM_PL_VRAM);
 524
 525         return amdgpu_vram_mgr_usage(vram_man);
 526 }
 527
 528 uint64_t amdgpu_amdkfd_get_hive_id(struct kgd_dev *kgd)
 529 {
 530         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 531
 532         return adev->gmc.xgmi.hive_id;
 533 }
 534
 535 uint64_t amdgpu_amdkfd_get_unique_id(struct kgd_dev *kgd)
 536 {
 537         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 538
 539         return adev->unique_id;
 540 }
 541
 542 uint8_t amdgpu_amdkfd_get_xgmi_hops_count(struct kgd_dev *dst, struct kgd_dev *src)
 543 {
 544         struct amdgpu_device *peer_adev = (struct amdgpu_device *)src;
 545         struct amdgpu_device *adev = (struct amdgpu_device *)dst;
 546         int ret = amdgpu_xgmi_get_hops_count(adev, peer_adev);
 547
 548         if (ret < 0) {
 549                 DRM_ERROR("amdgpu: failed to get  xgmi hops count between node %d and %d. ret = %d\n",
 550                         adev->gmc.xgmi.physical_node_id,
 551                         peer_adev->gmc.xgmi.physical_node_id, ret);
 552                 ret = 0;
 553         }
 554         return  (uint8_t)ret;
 555 }
 556
 557 int amdgpu_amdkfd_get_xgmi_bandwidth_mbytes(struct kgd_dev *dst, struct kgd_dev *src, bool is_min)
 558 {
 559         struct amdgpu_device *adev = (struct amdgpu_device *)dst, *peer_adev;
 560         int num_links;
 561
 562         if (adev->asic_type != CHIP_ALDEBARAN)
 563                 return 0;
 564
 565         if (src)
 566                 peer_adev = (struct amdgpu_device *)src;
 567
 568         /* num links returns 0 for indirect peers since indirect route is unknown. */
 569         num_links = is_min ? 1 : amdgpu_xgmi_get_num_links(adev, peer_adev);
 570         if (num_links < 0) {
 571                 DRM_ERROR("amdgpu: failed to get xgmi num links between node %d and %d. ret = %d\n",
 572                         adev->gmc.xgmi.physical_node_id,
 573                         peer_adev->gmc.xgmi.physical_node_id, num_links);
 574                 num_links = 0;
 575         }
 576
 577         /* Aldebaran xGMI DPM is defeatured so assume x16 x 25Gbps for bandwidth. */
 578         return (num_links * 16 * 25000)/BITS_PER_BYTE;
 579 }
 580
 581 int amdgpu_amdkfd_get_pcie_bandwidth_mbytes(struct kgd_dev *dev, bool is_min)
 582 {
 583         struct amdgpu_device *adev = (struct amdgpu_device *)dev;
 584         int num_lanes_shift = (is_min ? ffs(adev->pm.pcie_mlw_mask) :
 585                                                         fls(adev->pm.pcie_mlw_mask)) - 1;
 586         int gen_speed_shift = (is_min ? ffs(adev->pm.pcie_gen_mask &
 587                                                 CAIL_PCIE_LINK_SPEED_SUPPORT_MASK) :
 588                                         fls(adev->pm.pcie_gen_mask &
 589                                                 CAIL_PCIE_LINK_SPEED_SUPPORT_MASK)) - 1;
 590         uint32_t num_lanes_mask = 1 << num_lanes_shift;
 591         uint32_t gen_speed_mask = 1 << gen_speed_shift;
 592         int num_lanes_factor = 0, gen_speed_mbits_factor = 0;
 593
 594         switch (num_lanes_mask) {
 595         case CAIL_PCIE_LINK_WIDTH_SUPPORT_X1:
 596                 num_lanes_factor = 1;
 597                 break;
 598         case CAIL_PCIE_LINK_WIDTH_SUPPORT_X2:
 599                 num_lanes_factor = 2;
 600                 break;
 601         case CAIL_PCIE_LINK_WIDTH_SUPPORT_X4:
 602                 num_lanes_factor = 4;
 603                 break;
 604         case CAIL_PCIE_LINK_WIDTH_SUPPORT_X8:
 605                 num_lanes_factor = 8;
 606                 break;
 607         case CAIL_PCIE_LINK_WIDTH_SUPPORT_X12:
 608                 num_lanes_factor = 12;
 609                 break;
 610         case CAIL_PCIE_LINK_WIDTH_SUPPORT_X16:
 611                 num_lanes_factor = 16;
 612                 break;
 613         case CAIL_PCIE_LINK_WIDTH_SUPPORT_X32:
 614                 num_lanes_factor = 32;
 615                 break;
 616         }
 617
 618         switch (gen_speed_mask) {
 619         case CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1:
 620                 gen_speed_mbits_factor = 2500;
 621                 break;
 622         case CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2:
 623                 gen_speed_mbits_factor = 5000;
 624                 break;
 625         case CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3:
 626                 gen_speed_mbits_factor = 8000;
 627                 break;
 628         case CAIL_PCIE_LINK_SPEED_SUPPORT_GEN4:
 629                 gen_speed_mbits_factor = 16000;
 630                 break;
 631         case CAIL_PCIE_LINK_SPEED_SUPPORT_GEN5:
 632                 gen_speed_mbits_factor = 32000;
 633                 break;
 634         }
 635
 636         return (num_lanes_factor * gen_speed_mbits_factor)/BITS_PER_BYTE;
 637 }
 638
 639 uint64_t amdgpu_amdkfd_get_mmio_remap_phys_addr(struct kgd_dev *kgd)
 640 {
 641         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 642
 643         return adev->rmmio_remap.bus_addr;
 644 }
 645
 646 uint32_t amdgpu_amdkfd_get_num_gws(struct kgd_dev *kgd)
 647 {
 648         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 649
 650         return adev->gds.gws_size;
 651 }
 652
 653 uint32_t amdgpu_amdkfd_get_asic_rev_id(struct kgd_dev *kgd)
 654 {
 655         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 656
 657         return adev->rev_id;
 658 }
 659
 660 int amdgpu_amdkfd_get_noretry(struct kgd_dev *kgd)
 661 {
 662         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 663
 664         return adev->gmc.noretry;
 665 }
 666
 667 int amdgpu_amdkfd_submit_ib(struct kgd_dev *kgd, enum kgd_engine_type engine,
 668                                 uint32_t vmid, uint64_t gpu_addr,
 669                                 uint32_t *ib_cmd, uint32_t ib_len)
 670 {
 671         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 672         struct amdgpu_job *job;
 673         struct amdgpu_ib *ib;
 674         struct amdgpu_ring *ring;
 675         struct dma_fence *f = NULL;
 676         int ret;
 677
 678         switch (engine) {
 679         case KGD_ENGINE_MEC1:
 680                 ring = &adev->gfx.compute_ring[0];
 681                 break;
 682         case KGD_ENGINE_SDMA1:
 683                 ring = &adev->sdma.instance[0].ring;
 684                 break;
 685         case KGD_ENGINE_SDMA2:
 686                 ring = &adev->sdma.instance[1].ring;
 687                 break;
 688         default:
 689                 pr_err("Invalid engine in IB submission: %d\n", engine);
 690                 ret = -EINVAL;
 691                 goto err;
 692         }
 693
 694         ret = amdgpu_job_alloc(adev, 1, &job, NULL);
 695         if (ret)
 696                 goto err;
 697
 698         ib = &job->ibs[0];
 699         memset(ib, 0, sizeof(struct amdgpu_ib));
 700
 701         ib->gpu_addr = gpu_addr;
 702         ib->ptr = ib_cmd;
 703         ib->length_dw = ib_len;
 704         /* This works for NO_HWS. TODO: need to handle without knowing VMID */
 705         job->vmid = vmid;
 706
 707         ret = amdgpu_ib_schedule(ring, 1, ib, job, &f);
 708
 709         if (ret) {
 710                 DRM_ERROR("amdgpu: failed to schedule IB.\n");
 711                 goto err_ib_sched;
 712         }
 713
 714         ret = dma_fence_wait(f, false);
 715
 716 err_ib_sched:
 717         amdgpu_job_free(job);
 718 err:
 719         return ret;
 720 }
 721
 722 void amdgpu_amdkfd_set_compute_idle(struct kgd_dev *kgd, bool idle)
 723 {
 724         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 725
 726         amdgpu_dpm_switch_power_profile(adev,
 727                                         PP_SMC_POWER_PROFILE_COMPUTE,
 728                                         !idle);
 729 }
 730
 731 bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid)
 732 {
 733         if (adev->kfd.dev)
 734                 return vmid >= adev->vm_manager.first_kfd_vmid;
 735
 736         return false;
 737 }
 738
 739 int amdgpu_amdkfd_flush_gpu_tlb_vmid(struct kgd_dev *kgd, uint16_t vmid)
 740 {
 741         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 742
 743         if (adev->family == AMDGPU_FAMILY_AI) {
 744                 int i;
 745
 746                 for (i = 0; i < adev->num_vmhubs; i++)
 747                         amdgpu_gmc_flush_gpu_tlb(adev, vmid, i, 0);
 748         } else {
 749                 amdgpu_gmc_flush_gpu_tlb(adev, vmid, AMDGPU_GFXHUB_0, 0);
 750         }
 751
 752         return 0;
 753 }
 754
 755 int amdgpu_amdkfd_flush_gpu_tlb_pasid(struct kgd_dev *kgd, uint16_t pasid,
 756                                       enum TLB_FLUSH_TYPE flush_type)
 757 {
 758         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 759         bool all_hub = false;
 760
 761         if (adev->family == AMDGPU_FAMILY_AI)
 762                 all_hub = true;
 763
 764         return amdgpu_gmc_flush_gpu_tlb_pasid(adev, pasid, flush_type, all_hub);
 765 }
 766
 767 bool amdgpu_amdkfd_have_atomics_support(struct kgd_dev *kgd)
 768 {
 769         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 770
 771         return adev->have_atomics_support;
 772 }