drivers/gpu/drm/radeon/radeon_test.c

   1 // SPDX-License-Identifier: GPL-2.0 OR MIT
   2 /*
   3  * Copyright 2009 VMware, 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  * Authors: Michel Dänzer
  24  */
  25 #include <drm/drmP.h>
  26 #include <drm/radeon_drm.h>
  27 #include "radeon_reg.h"
  28 #include "radeon.h"
  29
  30 #define RADEON_TEST_COPY_BLIT 1
  31 #define RADEON_TEST_COPY_DMA  0
  32
  33
  34 /* Test BO GTT->VRAM and VRAM->GTT GPU copies across the whole GTT aperture */
  35 static void radeon_do_test_moves(struct radeon_device *rdev, int flag)
  36 {
  37         struct radeon_bo *vram_obj = NULL;
  38         struct radeon_bo **gtt_obj = NULL;
  39         uint64_t gtt_addr, vram_addr;
  40         unsigned n, size;
  41         int i, r, ring;
  42
  43         switch (flag) {
  44         case RADEON_TEST_COPY_DMA:
  45                 ring = radeon_copy_dma_ring_index(rdev);
  46                 break;
  47         case RADEON_TEST_COPY_BLIT:
  48                 ring = radeon_copy_blit_ring_index(rdev);
  49                 break;
  50         default:
  51                 DRM_ERROR("Unknown copy method\n");
  52                 return;
  53         }
  54
  55         size = 1024 * 1024;
  56
  57         /* Number of tests =
  58          * (Total GTT - IB pool - writeback page - ring buffers) / test size
  59          */
  60         n = rdev->mc.gtt_size - rdev->gart_pin_size;
  61         n /= size;
  62
  63         gtt_obj = kcalloc(n, sizeof(*gtt_obj), GFP_KERNEL);
  64         if (!gtt_obj) {
  65                 DRM_ERROR("Failed to allocate %d pointers\n", n);
  66                 r = 1;
  67                 goto out_cleanup;
  68         }
  69
  70         r = radeon_bo_create(rdev, size, PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
  71                              0, NULL, NULL, &vram_obj);
  72         if (r) {
  73                 DRM_ERROR("Failed to create VRAM object\n");
  74                 goto out_cleanup;
  75         }
  76         r = radeon_bo_reserve(vram_obj, false);
  77         if (unlikely(r != 0))
  78                 goto out_unref;
  79         r = radeon_bo_pin(vram_obj, RADEON_GEM_DOMAIN_VRAM, &vram_addr);
  80         if (r) {
  81                 DRM_ERROR("Failed to pin VRAM object\n");
  82                 goto out_unres;
  83         }
  84         for (i = 0; i < n; i++) {
  85                 void *gtt_map, *vram_map;
  86                 void **gtt_start, **gtt_end;
  87                 void **vram_start, **vram_end;
  88                 struct radeon_fence *fence = NULL;
  89
  90                 r = radeon_bo_create(rdev, size, PAGE_SIZE, true,
  91                                      RADEON_GEM_DOMAIN_GTT, 0, NULL, NULL,
  92                                      gtt_obj + i);
  93                 if (r) {
  94                         DRM_ERROR("Failed to create GTT object %d\n", i);
  95                         goto out_lclean;
  96                 }
  97
  98                 r = radeon_bo_reserve(gtt_obj[i], false);
  99                 if (unlikely(r != 0))
 100                         goto out_lclean_unref;
 101                 r = radeon_bo_pin(gtt_obj[i], RADEON_GEM_DOMAIN_GTT, &gtt_addr);
 102                 if (r) {
 103                         DRM_ERROR("Failed to pin GTT object %d\n", i);
 104                         goto out_lclean_unres;
 105                 }
 106
 107                 r = radeon_bo_kmap(gtt_obj[i], &gtt_map);
 108                 if (r) {
 109                         DRM_ERROR("Failed to map GTT object %d\n", i);
 110                         goto out_lclean_unpin;
 111                 }
 112
 113                 for (gtt_start = gtt_map, gtt_end = gtt_map + size;
 114                      gtt_start < gtt_end;
 115                      gtt_start++)
 116                         *gtt_start = gtt_start;
 117
 118                 radeon_bo_kunmap(gtt_obj[i]);
 119
 120                 if (ring == R600_RING_TYPE_DMA_INDEX)
 121                         fence = radeon_copy_dma(rdev, gtt_addr, vram_addr,
 122                                                 size / RADEON_GPU_PAGE_SIZE,
 123                                                 vram_obj->tbo.resv);
 124                 else
 125                         fence = radeon_copy_blit(rdev, gtt_addr, vram_addr,
 126                                                  size / RADEON_GPU_PAGE_SIZE,
 127                                                  vram_obj->tbo.resv);
 128                 if (IS_ERR(fence)) {
 129                         DRM_ERROR("Failed GTT->VRAM copy %d\n", i);
 130                         r = PTR_ERR(fence);
 131                         goto out_lclean_unpin;
 132                 }
 133
 134                 r = radeon_fence_wait(fence, false);
 135                 if (r) {
 136                         DRM_ERROR("Failed to wait for GTT->VRAM fence %d\n", i);
 137                         goto out_lclean_unpin;
 138                 }
 139
 140                 radeon_fence_unref(&fence);
 141
 142                 r = radeon_bo_kmap(vram_obj, &vram_map);
 143                 if (r) {
 144                         DRM_ERROR("Failed to map VRAM object after copy %d\n", i);
 145                         goto out_lclean_unpin;
 146                 }
 147
 148                 for (gtt_start = gtt_map, gtt_end = gtt_map + size,
 149                      vram_start = vram_map, vram_end = vram_map + size;
 150                      vram_start < vram_end;
 151                      gtt_start++, vram_start++) {
 152                         if (*vram_start != gtt_start) {
 153                                 DRM_ERROR("Incorrect GTT->VRAM copy %d: Got 0x%p, "
 154                                           "expected 0x%p (GTT/VRAM offset "
 155                                           "0x%16llx/0x%16llx)\n",
 156                                           i, *vram_start, gtt_start,
 157                                           (unsigned long long)
 158                                           (gtt_addr - rdev->mc.gtt_start +
 159                                            (void*)gtt_start - gtt_map),
 160                                           (unsigned long long)
 161                                           (vram_addr - rdev->mc.vram_start +
 162                                            (void*)gtt_start - gtt_map));
 163                                 radeon_bo_kunmap(vram_obj);
 164                                 goto out_lclean_unpin;
 165                         }
 166                         *vram_start = vram_start;
 167                 }
 168
 169                 radeon_bo_kunmap(vram_obj);
 170
 171                 if (ring == R600_RING_TYPE_DMA_INDEX)
 172                         fence = radeon_copy_dma(rdev, vram_addr, gtt_addr,
 173                                                 size / RADEON_GPU_PAGE_SIZE,
 174                                                 vram_obj->tbo.resv);
 175                 else
 176                         fence = radeon_copy_blit(rdev, vram_addr, gtt_addr,
 177                                                  size / RADEON_GPU_PAGE_SIZE,
 178                                                  vram_obj->tbo.resv);
 179                 if (IS_ERR(fence)) {
 180                         DRM_ERROR("Failed VRAM->GTT copy %d\n", i);
 181                         r = PTR_ERR(fence);
 182                         goto out_lclean_unpin;
 183                 }
 184
 185                 r = radeon_fence_wait(fence, false);
 186                 if (r) {
 187                         DRM_ERROR("Failed to wait for VRAM->GTT fence %d\n", i);
 188                         goto out_lclean_unpin;
 189                 }
 190
 191                 radeon_fence_unref(&fence);
 192
 193                 r = radeon_bo_kmap(gtt_obj[i], &gtt_map);
 194                 if (r) {
 195                         DRM_ERROR("Failed to map GTT object after copy %d\n", i);
 196                         goto out_lclean_unpin;
 197                 }
 198
 199                 for (gtt_start = gtt_map, gtt_end = gtt_map + size,
 200                      vram_start = vram_map, vram_end = vram_map + size;
 201                      gtt_start < gtt_end;
 202                      gtt_start++, vram_start++) {
 203                         if (*gtt_start != vram_start) {
 204                                 DRM_ERROR("Incorrect VRAM->GTT copy %d: Got 0x%p, "
 205                                           "expected 0x%p (VRAM/GTT offset "
 206                                           "0x%16llx/0x%16llx)\n",
 207                                           i, *gtt_start, vram_start,
 208                                           (unsigned long long)
 209                                           (vram_addr - rdev->mc.vram_start +
 210                                            (void*)vram_start - vram_map),
 211                                           (unsigned long long)
 212                                           (gtt_addr - rdev->mc.gtt_start +
 213                                            (void*)vram_start - vram_map));
 214                                 radeon_bo_kunmap(gtt_obj[i]);
 215                                 goto out_lclean_unpin;
 216                         }
 217                 }
 218
 219                 radeon_bo_kunmap(gtt_obj[i]);
 220
 221                 DRM_INFO("Tested GTT->VRAM and VRAM->GTT copy for GTT offset 0x%llx\n",
 222                          gtt_addr - rdev->mc.gtt_start);
 223                 continue;
 224
 225 out_lclean_unpin:
 226                 radeon_bo_unpin(gtt_obj[i]);
 227 out_lclean_unres:
 228                 radeon_bo_unreserve(gtt_obj[i]);
 229 out_lclean_unref:
 230                 radeon_bo_unref(&gtt_obj[i]);
 231 out_lclean:
 232                 for (--i; i >= 0; --i) {
 233                         radeon_bo_unpin(gtt_obj[i]);
 234                         radeon_bo_unreserve(gtt_obj[i]);
 235                         radeon_bo_unref(&gtt_obj[i]);
 236                 }
 237                 if (fence && !IS_ERR(fence))
 238                         radeon_fence_unref(&fence);
 239                 break;
 240         }
 241
 242         radeon_bo_unpin(vram_obj);
 243 out_unres:
 244         radeon_bo_unreserve(vram_obj);
 245 out_unref:
 246         radeon_bo_unref(&vram_obj);
 247 out_cleanup:
 248         kfree(gtt_obj);
 249         if (r) {
 250                 pr_warn("Error while testing BO move\n");
 251         }
 252 }
 253
 254 void radeon_test_moves(struct radeon_device *rdev)
 255 {
 256         if (rdev->asic->copy.dma)
 257                 radeon_do_test_moves(rdev, RADEON_TEST_COPY_DMA);
 258         if (rdev->asic->copy.blit)
 259                 radeon_do_test_moves(rdev, RADEON_TEST_COPY_BLIT);
 260 }
 261
 262 static int radeon_test_create_and_emit_fence(struct radeon_device *rdev,
 263                                              struct radeon_ring *ring,
 264                                              struct radeon_fence **fence)
 265 {
 266         uint32_t handle = ring->idx ^ 0xdeafbeef;
 267         int r;
 268
 269         if (ring->idx == R600_RING_TYPE_UVD_INDEX) {
 270                 r = radeon_uvd_get_create_msg(rdev, ring->idx, handle, NULL);
 271                 if (r) {
 272                         DRM_ERROR("Failed to get dummy create msg\n");
 273                         return r;
 274                 }
 275
 276                 r = radeon_uvd_get_destroy_msg(rdev, ring->idx, handle, fence);
 277                 if (r) {
 278                         DRM_ERROR("Failed to get dummy destroy msg\n");
 279                         return r;
 280                 }
 281
 282         } else if (ring->idx == TN_RING_TYPE_VCE1_INDEX ||
 283                    ring->idx == TN_RING_TYPE_VCE2_INDEX) {
 284                 r = radeon_vce_get_create_msg(rdev, ring->idx, handle, NULL);
 285                 if (r) {
 286                         DRM_ERROR("Failed to get dummy create msg\n");
 287                         return r;
 288                 }
 289
 290                 r = radeon_vce_get_destroy_msg(rdev, ring->idx, handle, fence);
 291                 if (r) {
 292                         DRM_ERROR("Failed to get dummy destroy msg\n");
 293                         return r;
 294                 }
 295
 296         } else {
 297                 r = radeon_ring_lock(rdev, ring, 64);
 298                 if (r) {
 299                         DRM_ERROR("Failed to lock ring A %d\n", ring->idx);
 300                         return r;
 301                 }
 302                 r = radeon_fence_emit(rdev, fence, ring->idx);
 303                 if (r) {
 304                         DRM_ERROR("Failed to emit fence\n");
 305                         radeon_ring_unlock_undo(rdev, ring);
 306                         return r;
 307                 }
 308                 radeon_ring_unlock_commit(rdev, ring, false);
 309         }
 310         return 0;
 311 }
 312
 313 void radeon_test_ring_sync(struct radeon_device *rdev,
 314                            struct radeon_ring *ringA,
 315                            struct radeon_ring *ringB)
 316 {
 317         struct radeon_fence *fence1 = NULL, *fence2 = NULL;
 318         struct radeon_semaphore *semaphore = NULL;
 319         int r;
 320
 321         r = radeon_semaphore_create(rdev, &semaphore);
 322         if (r) {
 323                 DRM_ERROR("Failed to create semaphore\n");
 324                 goto out_cleanup;
 325         }
 326
 327         r = radeon_ring_lock(rdev, ringA, 64);
 328         if (r) {
 329                 DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
 330                 goto out_cleanup;
 331         }
 332         radeon_semaphore_emit_wait(rdev, ringA->idx, semaphore);
 333         radeon_ring_unlock_commit(rdev, ringA, false);
 334
 335         r = radeon_test_create_and_emit_fence(rdev, ringA, &fence1);
 336         if (r)
 337                 goto out_cleanup;
 338
 339         r = radeon_ring_lock(rdev, ringA, 64);
 340         if (r) {
 341                 DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
 342                 goto out_cleanup;
 343         }
 344         radeon_semaphore_emit_wait(rdev, ringA->idx, semaphore);
 345         radeon_ring_unlock_commit(rdev, ringA, false);
 346
 347         r = radeon_test_create_and_emit_fence(rdev, ringA, &fence2);
 348         if (r)
 349                 goto out_cleanup;
 350
 351         mdelay(1000);
 352
 353         if (radeon_fence_signaled(fence1)) {
 354                 DRM_ERROR("Fence 1 signaled without waiting for semaphore.\n");
 355                 goto out_cleanup;
 356         }
 357
 358         r = radeon_ring_lock(rdev, ringB, 64);
 359         if (r) {
 360                 DRM_ERROR("Failed to lock ring B %p\n", ringB);
 361                 goto out_cleanup;
 362         }
 363         radeon_semaphore_emit_signal(rdev, ringB->idx, semaphore);
 364         radeon_ring_unlock_commit(rdev, ringB, false);
 365
 366         r = radeon_fence_wait(fence1, false);
 367         if (r) {
 368                 DRM_ERROR("Failed to wait for sync fence 1\n");
 369                 goto out_cleanup;
 370         }
 371
 372         mdelay(1000);
 373
 374         if (radeon_fence_signaled(fence2)) {
 375                 DRM_ERROR("Fence 2 signaled without waiting for semaphore.\n");
 376                 goto out_cleanup;
 377         }
 378
 379         r = radeon_ring_lock(rdev, ringB, 64);
 380         if (r) {
 381                 DRM_ERROR("Failed to lock ring B %p\n", ringB);
 382                 goto out_cleanup;
 383         }
 384         radeon_semaphore_emit_signal(rdev, ringB->idx, semaphore);
 385         radeon_ring_unlock_commit(rdev, ringB, false);
 386
 387         r = radeon_fence_wait(fence2, false);
 388         if (r) {
 389                 DRM_ERROR("Failed to wait for sync fence 1\n");
 390                 goto out_cleanup;
 391         }
 392
 393 out_cleanup:
 394         radeon_semaphore_free(rdev, &semaphore, NULL);
 395
 396         if (fence1)
 397                 radeon_fence_unref(&fence1);
 398
 399         if (fence2)
 400                 radeon_fence_unref(&fence2);
 401
 402         if (r)
 403                 pr_warn("Error while testing ring sync (%d)\n", r);
 404 }
 405
 406 static void radeon_test_ring_sync2(struct radeon_device *rdev,
 407                             struct radeon_ring *ringA,
 408                             struct radeon_ring *ringB,
 409                             struct radeon_ring *ringC)
 410 {
 411         struct radeon_fence *fenceA = NULL, *fenceB = NULL;
 412         struct radeon_semaphore *semaphore = NULL;
 413         bool sigA, sigB;
 414         int i, r;
 415
 416         r = radeon_semaphore_create(rdev, &semaphore);
 417         if (r) {
 418                 DRM_ERROR("Failed to create semaphore\n");
 419                 goto out_cleanup;
 420         }
 421
 422         r = radeon_ring_lock(rdev, ringA, 64);
 423         if (r) {
 424                 DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
 425                 goto out_cleanup;
 426         }
 427         radeon_semaphore_emit_wait(rdev, ringA->idx, semaphore);
 428         radeon_ring_unlock_commit(rdev, ringA, false);
 429
 430         r = radeon_test_create_and_emit_fence(rdev, ringA, &fenceA);
 431         if (r)
 432                 goto out_cleanup;
 433
 434         r = radeon_ring_lock(rdev, ringB, 64);
 435         if (r) {
 436                 DRM_ERROR("Failed to lock ring B %d\n", ringB->idx);
 437                 goto out_cleanup;
 438         }
 439         radeon_semaphore_emit_wait(rdev, ringB->idx, semaphore);
 440         radeon_ring_unlock_commit(rdev, ringB, false);
 441         r = radeon_test_create_and_emit_fence(rdev, ringB, &fenceB);
 442         if (r)
 443                 goto out_cleanup;
 444
 445         mdelay(1000);
 446
 447         if (radeon_fence_signaled(fenceA)) {
 448                 DRM_ERROR("Fence A signaled without waiting for semaphore.\n");
 449                 goto out_cleanup;
 450         }
 451         if (radeon_fence_signaled(fenceB)) {
 452                 DRM_ERROR("Fence B signaled without waiting for semaphore.\n");
 453                 goto out_cleanup;
 454         }
 455
 456         r = radeon_ring_lock(rdev, ringC, 64);
 457         if (r) {
 458                 DRM_ERROR("Failed to lock ring B %p\n", ringC);
 459                 goto out_cleanup;
 460         }
 461         radeon_semaphore_emit_signal(rdev, ringC->idx, semaphore);
 462         radeon_ring_unlock_commit(rdev, ringC, false);
 463
 464         for (i = 0; i < 30; ++i) {
 465                 mdelay(100);
 466                 sigA = radeon_fence_signaled(fenceA);
 467                 sigB = radeon_fence_signaled(fenceB);
 468                 if (sigA || sigB)
 469                         break;
 470         }
 471
 472         if (!sigA && !sigB) {
 473                 DRM_ERROR("Neither fence A nor B has been signaled\n");
 474                 goto out_cleanup;
 475         } else if (sigA && sigB) {
 476                 DRM_ERROR("Both fence A and B has been signaled\n");
 477                 goto out_cleanup;
 478         }
 479
 480         DRM_INFO("Fence %c was first signaled\n", sigA ? 'A' : 'B');
 481
 482         r = radeon_ring_lock(rdev, ringC, 64);
 483         if (r) {
 484                 DRM_ERROR("Failed to lock ring B %p\n", ringC);
 485                 goto out_cleanup;
 486         }
 487         radeon_semaphore_emit_signal(rdev, ringC->idx, semaphore);
 488         radeon_ring_unlock_commit(rdev, ringC, false);
 489
 490         mdelay(1000);
 491
 492         r = radeon_fence_wait(fenceA, false);
 493         if (r) {
 494                 DRM_ERROR("Failed to wait for sync fence A\n");
 495                 goto out_cleanup;
 496         }
 497         r = radeon_fence_wait(fenceB, false);
 498         if (r) {
 499                 DRM_ERROR("Failed to wait for sync fence B\n");
 500                 goto out_cleanup;
 501         }
 502
 503 out_cleanup:
 504         radeon_semaphore_free(rdev, &semaphore, NULL);
 505
 506         if (fenceA)
 507                 radeon_fence_unref(&fenceA);
 508
 509         if (fenceB)
 510                 radeon_fence_unref(&fenceB);
 511
 512         if (r)
 513                 pr_warn("Error while testing ring sync (%d)\n", r);
 514 }
 515
 516 static bool radeon_test_sync_possible(struct radeon_ring *ringA,
 517                                       struct radeon_ring *ringB)
 518 {
 519         if (ringA->idx == TN_RING_TYPE_VCE2_INDEX &&
 520             ringB->idx == TN_RING_TYPE_VCE1_INDEX)
 521                 return false;
 522
 523         return true;
 524 }
 525
 526 void radeon_test_syncing(struct radeon_device *rdev)
 527 {
 528         int i, j, k;
 529
 530         for (i = 1; i < RADEON_NUM_RINGS; ++i) {
 531                 struct radeon_ring *ringA = &rdev->ring[i];
 532                 if (!ringA->ready)
 533                         continue;
 534
 535                 for (j = 0; j < i; ++j) {
 536                         struct radeon_ring *ringB = &rdev->ring[j];
 537                         if (!ringB->ready)
 538                                 continue;
 539
 540                         if (!radeon_test_sync_possible(ringA, ringB))
 541                                 continue;
 542
 543                         DRM_INFO("Testing syncing between rings %d and %d...\n", i, j);
 544                         radeon_test_ring_sync(rdev, ringA, ringB);
 545
 546                         DRM_INFO("Testing syncing between rings %d and %d...\n", j, i);
 547                         radeon_test_ring_sync(rdev, ringB, ringA);
 548
 549                         for (k = 0; k < j; ++k) {
 550                                 struct radeon_ring *ringC = &rdev->ring[k];
 551                                 if (!ringC->ready)
 552                                         continue;
 553
 554                                 if (!radeon_test_sync_possible(ringA, ringC))
 555                                         continue;
 556
 557                                 if (!radeon_test_sync_possible(ringB, ringC))
 558                                         continue;
 559
 560                                 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", i, j, k);
 561                                 radeon_test_ring_sync2(rdev, ringA, ringB, ringC);
 562
 563                                 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", i, k, j);
 564                                 radeon_test_ring_sync2(rdev, ringA, ringC, ringB);
 565
 566                                 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", j, i, k);
 567                                 radeon_test_ring_sync2(rdev, ringB, ringA, ringC);
 568
 569                                 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", j, k, i);
 570                                 radeon_test_ring_sync2(rdev, ringB, ringC, ringA);
 571
 572                                 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", k, i, j);
 573                                 radeon_test_ring_sync2(rdev, ringC, ringA, ringB);
 574
 575                                 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", k, j, i);
 576                                 radeon_test_ring_sync2(rdev, ringC, ringB, ringA);
 577                         }
 578                 }
 579         }
 580 }