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

   1 /*
   2  * Copyright 2009 VMware, 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  * Authors: Michel Dänzer
  23  */
  24 #include <drm/drmP.h>
  25 #include <drm/amdgpu_drm.h>
  26 #include "amdgpu.h"
  27 #include "amdgpu_uvd.h"
  28 #include "amdgpu_vce.h"
  29
  30 /* Test BO GTT->VRAM and VRAM->GTT GPU copies across the whole GTT aperture */
  31 static void amdgpu_do_test_moves(struct amdgpu_device *adev)
  32 {
  33         struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
  34         struct amdgpu_bo *vram_obj = NULL;
  35         struct amdgpu_bo **gtt_obj = NULL;
  36         uint64_t gtt_addr, vram_addr;
  37         unsigned n, size;
  38         int i, r;
  39
  40         size = 1024 * 1024;
  41
  42         /* Number of tests =
  43          * (Total GTT - IB pool - writeback page - ring buffers) / test size
  44          */
  45         n = adev->mc.gtt_size - AMDGPU_IB_POOL_SIZE*64*1024;
  46         for (i = 0; i < AMDGPU_MAX_RINGS; ++i)
  47                 if (adev->rings[i])
  48                         n -= adev->rings[i]->ring_size;
  49         if (adev->wb.wb_obj)
  50                 n -= AMDGPU_GPU_PAGE_SIZE;
  51         if (adev->irq.ih.ring_obj)
  52                 n -= adev->irq.ih.ring_size;
  53         n /= size;
  54
  55         gtt_obj = kzalloc(n * sizeof(*gtt_obj), GFP_KERNEL);
  56         if (!gtt_obj) {
  57                 DRM_ERROR("Failed to allocate %d pointers\n", n);
  58                 r = 1;
  59                 goto out_cleanup;
  60         }
  61
  62         r = amdgpu_bo_create(adev, size, PAGE_SIZE, true,
  63                              AMDGPU_GEM_DOMAIN_VRAM, 0,
  64                              NULL, NULL, &vram_obj);
  65         if (r) {
  66                 DRM_ERROR("Failed to create VRAM object\n");
  67                 goto out_cleanup;
  68         }
  69         r = amdgpu_bo_reserve(vram_obj, false);
  70         if (unlikely(r != 0))
  71                 goto out_unref;
  72         r = amdgpu_bo_pin(vram_obj, AMDGPU_GEM_DOMAIN_VRAM, &vram_addr);
  73         if (r) {
  74                 DRM_ERROR("Failed to pin VRAM object\n");
  75                 goto out_unres;
  76         }
  77         for (i = 0; i < n; i++) {
  78                 void *gtt_map, *vram_map;
  79                 void **gtt_start, **gtt_end;
  80                 void **vram_start, **vram_end;
  81                 struct fence *fence = NULL;
  82
  83                 r = amdgpu_bo_create(adev, size, PAGE_SIZE, true,
  84                                      AMDGPU_GEM_DOMAIN_GTT, 0, NULL,
  85                                      NULL, gtt_obj + i);
  86                 if (r) {
  87                         DRM_ERROR("Failed to create GTT object %d\n", i);
  88                         goto out_lclean;
  89                 }
  90
  91                 r = amdgpu_bo_reserve(gtt_obj[i], false);
  92                 if (unlikely(r != 0))
  93                         goto out_lclean_unref;
  94                 r = amdgpu_bo_pin(gtt_obj[i], AMDGPU_GEM_DOMAIN_GTT, &gtt_addr);
  95                 if (r) {
  96                         DRM_ERROR("Failed to pin GTT object %d\n", i);
  97                         goto out_lclean_unres;
  98                 }
  99
 100                 r = amdgpu_bo_kmap(gtt_obj[i], &gtt_map);
 101                 if (r) {
 102                         DRM_ERROR("Failed to map GTT object %d\n", i);
 103                         goto out_lclean_unpin;
 104                 }
 105
 106                 for (gtt_start = gtt_map, gtt_end = gtt_map + size;
 107                      gtt_start < gtt_end;
 108                      gtt_start++)
 109                         *gtt_start = gtt_start;
 110
 111                 amdgpu_bo_kunmap(gtt_obj[i]);
 112
 113                 r = amdgpu_copy_buffer(ring, gtt_addr, vram_addr,
 114                                        size, NULL, &fence);
 115
 116                 if (r) {
 117                         DRM_ERROR("Failed GTT->VRAM copy %d\n", i);
 118                         goto out_lclean_unpin;
 119                 }
 120
 121                 r = fence_wait(fence, false);
 122                 if (r) {
 123                         DRM_ERROR("Failed to wait for GTT->VRAM fence %d\n", i);
 124                         goto out_lclean_unpin;
 125                 }
 126
 127                 fence_put(fence);
 128
 129                 r = amdgpu_bo_kmap(vram_obj, &vram_map);
 130                 if (r) {
 131                         DRM_ERROR("Failed to map VRAM object after copy %d\n", i);
 132                         goto out_lclean_unpin;
 133                 }
 134
 135                 for (gtt_start = gtt_map, gtt_end = gtt_map + size,
 136                      vram_start = vram_map, vram_end = vram_map + size;
 137                      vram_start < vram_end;
 138                      gtt_start++, vram_start++) {
 139                         if (*vram_start != gtt_start) {
 140                                 DRM_ERROR("Incorrect GTT->VRAM copy %d: Got 0x%p, "
 141                                           "expected 0x%p (GTT/VRAM offset "
 142                                           "0x%16llx/0x%16llx)\n",
 143                                           i, *vram_start, gtt_start,
 144                                           (unsigned long long)
 145                                           (gtt_addr - adev->mc.gtt_start +
 146                                            (void*)gtt_start - gtt_map),
 147                                           (unsigned long long)
 148                                           (vram_addr - adev->mc.vram_start +
 149                                            (void*)gtt_start - gtt_map));
 150                                 amdgpu_bo_kunmap(vram_obj);
 151                                 goto out_lclean_unpin;
 152                         }
 153                         *vram_start = vram_start;
 154                 }
 155
 156                 amdgpu_bo_kunmap(vram_obj);
 157
 158                 r = amdgpu_copy_buffer(ring, vram_addr, gtt_addr,
 159                                        size, NULL, &fence);
 160
 161                 if (r) {
 162                         DRM_ERROR("Failed VRAM->GTT copy %d\n", i);
 163                         goto out_lclean_unpin;
 164                 }
 165
 166                 r = fence_wait(fence, false);
 167                 if (r) {
 168                         DRM_ERROR("Failed to wait for VRAM->GTT fence %d\n", i);
 169                         goto out_lclean_unpin;
 170                 }
 171
 172                 fence_put(fence);
 173
 174                 r = amdgpu_bo_kmap(gtt_obj[i], &gtt_map);
 175                 if (r) {
 176                         DRM_ERROR("Failed to map GTT object after copy %d\n", i);
 177                         goto out_lclean_unpin;
 178                 }
 179
 180                 for (gtt_start = gtt_map, gtt_end = gtt_map + size,
 181                      vram_start = vram_map, vram_end = vram_map + size;
 182                      gtt_start < gtt_end;
 183                      gtt_start++, vram_start++) {
 184                         if (*gtt_start != vram_start) {
 185                                 DRM_ERROR("Incorrect VRAM->GTT copy %d: Got 0x%p, "
 186                                           "expected 0x%p (VRAM/GTT offset "
 187                                           "0x%16llx/0x%16llx)\n",
 188                                           i, *gtt_start, vram_start,
 189                                           (unsigned long long)
 190                                           (vram_addr - adev->mc.vram_start +
 191                                            (void*)vram_start - vram_map),
 192                                           (unsigned long long)
 193                                           (gtt_addr - adev->mc.gtt_start +
 194                                            (void*)vram_start - vram_map));
 195                                 amdgpu_bo_kunmap(gtt_obj[i]);
 196                                 goto out_lclean_unpin;
 197                         }
 198                 }
 199
 200                 amdgpu_bo_kunmap(gtt_obj[i]);
 201
 202                 DRM_INFO("Tested GTT->VRAM and VRAM->GTT copy for GTT offset 0x%llx\n",
 203                          gtt_addr - adev->mc.gtt_start);
 204                 continue;
 205
 206 out_lclean_unpin:
 207                 amdgpu_bo_unpin(gtt_obj[i]);
 208 out_lclean_unres:
 209                 amdgpu_bo_unreserve(gtt_obj[i]);
 210 out_lclean_unref:
 211                 amdgpu_bo_unref(&gtt_obj[i]);
 212 out_lclean:
 213                 for (--i; i >= 0; --i) {
 214                         amdgpu_bo_unpin(gtt_obj[i]);
 215                         amdgpu_bo_unreserve(gtt_obj[i]);
 216                         amdgpu_bo_unref(&gtt_obj[i]);
 217                 }
 218                 if (fence)
 219                         fence_put(fence);
 220                 break;
 221         }
 222
 223         amdgpu_bo_unpin(vram_obj);
 224 out_unres:
 225         amdgpu_bo_unreserve(vram_obj);
 226 out_unref:
 227         amdgpu_bo_unref(&vram_obj);
 228 out_cleanup:
 229         kfree(gtt_obj);
 230         if (r) {
 231                 printk(KERN_WARNING "Error while testing BO move.\n");
 232         }
 233 }
 234
 235 void amdgpu_test_moves(struct amdgpu_device *adev)
 236 {
 237         if (adev->mman.buffer_funcs)
 238                 amdgpu_do_test_moves(adev);
 239 }
 240
 241 static int amdgpu_test_create_and_emit_fence(struct amdgpu_device *adev,
 242                                              struct amdgpu_ring *ring,
 243                                              struct fence **fence)
 244 {
 245         uint32_t handle = ring->idx ^ 0xdeafbeef;
 246         int r;
 247
 248         if (ring == &adev->uvd.ring) {
 249                 r = amdgpu_uvd_get_create_msg(ring, handle, NULL);
 250                 if (r) {
 251                         DRM_ERROR("Failed to get dummy create msg\n");
 252                         return r;
 253                 }
 254
 255                 r = amdgpu_uvd_get_destroy_msg(ring, handle, fence);
 256                 if (r) {
 257                         DRM_ERROR("Failed to get dummy destroy msg\n");
 258                         return r;
 259                 }
 260
 261         } else if (ring == &adev->vce.ring[0] ||
 262                    ring == &adev->vce.ring[1]) {
 263                 r = amdgpu_vce_get_create_msg(ring, handle, NULL);
 264                 if (r) {
 265                         DRM_ERROR("Failed to get dummy create msg\n");
 266                         return r;
 267                 }
 268
 269                 r = amdgpu_vce_get_destroy_msg(ring, handle, fence);
 270                 if (r) {
 271                         DRM_ERROR("Failed to get dummy destroy msg\n");
 272                         return r;
 273                 }
 274         } else {
 275                 struct amdgpu_fence *a_fence = NULL;
 276                 r = amdgpu_ring_lock(ring, 64);
 277                 if (r) {
 278                         DRM_ERROR("Failed to lock ring A %d\n", ring->idx);
 279                         return r;
 280                 }
 281                 amdgpu_fence_emit(ring, AMDGPU_FENCE_OWNER_UNDEFINED, &a_fence);
 282                 amdgpu_ring_unlock_commit(ring);
 283                 *fence = &a_fence->base;
 284         }
 285         return 0;
 286 }
 287
 288 void amdgpu_test_ring_sync(struct amdgpu_device *adev,
 289                            struct amdgpu_ring *ringA,
 290                            struct amdgpu_ring *ringB)
 291 {
 292         struct fence *fence1 = NULL, *fence2 = NULL;
 293         struct amdgpu_semaphore *semaphore = NULL;
 294         int r;
 295
 296         r = amdgpu_semaphore_create(adev, &semaphore);
 297         if (r) {
 298                 DRM_ERROR("Failed to create semaphore\n");
 299                 goto out_cleanup;
 300         }
 301
 302         r = amdgpu_ring_lock(ringA, 64);
 303         if (r) {
 304                 DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
 305                 goto out_cleanup;
 306         }
 307         amdgpu_semaphore_emit_wait(ringA, semaphore);
 308         amdgpu_ring_unlock_commit(ringA);
 309
 310         r = amdgpu_test_create_and_emit_fence(adev, ringA, &fence1);
 311         if (r)
 312                 goto out_cleanup;
 313
 314         r = amdgpu_ring_lock(ringA, 64);
 315         if (r) {
 316                 DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
 317                 goto out_cleanup;
 318         }
 319         amdgpu_semaphore_emit_wait(ringA, semaphore);
 320         amdgpu_ring_unlock_commit(ringA);
 321
 322         r = amdgpu_test_create_and_emit_fence(adev, ringA, &fence2);
 323         if (r)
 324                 goto out_cleanup;
 325
 326         mdelay(1000);
 327
 328         if (fence_is_signaled(fence1)) {
 329                 DRM_ERROR("Fence 1 signaled without waiting for semaphore.\n");
 330                 goto out_cleanup;
 331         }
 332
 333         r = amdgpu_ring_lock(ringB, 64);
 334         if (r) {
 335                 DRM_ERROR("Failed to lock ring B %p\n", ringB);
 336                 goto out_cleanup;
 337         }
 338         amdgpu_semaphore_emit_signal(ringB, semaphore);
 339         amdgpu_ring_unlock_commit(ringB);
 340
 341         r = fence_wait(fence1, false);
 342         if (r) {
 343                 DRM_ERROR("Failed to wait for sync fence 1\n");
 344                 goto out_cleanup;
 345         }
 346
 347         mdelay(1000);
 348
 349         if (fence_is_signaled(fence2)) {
 350                 DRM_ERROR("Fence 2 signaled without waiting for semaphore.\n");
 351                 goto out_cleanup;
 352         }
 353
 354         r = amdgpu_ring_lock(ringB, 64);
 355         if (r) {
 356                 DRM_ERROR("Failed to lock ring B %p\n", ringB);
 357                 goto out_cleanup;
 358         }
 359         amdgpu_semaphore_emit_signal(ringB, semaphore);
 360         amdgpu_ring_unlock_commit(ringB);
 361
 362         r = fence_wait(fence2, false);
 363         if (r) {
 364                 DRM_ERROR("Failed to wait for sync fence 1\n");
 365                 goto out_cleanup;
 366         }
 367
 368 out_cleanup:
 369         amdgpu_semaphore_free(adev, &semaphore, NULL);
 370
 371         if (fence1)
 372                 fence_put(fence1);
 373
 374         if (fence2)
 375                 fence_put(fence2);
 376
 377         if (r)
 378                 printk(KERN_WARNING "Error while testing ring sync (%d).\n", r);
 379 }
 380
 381 static void amdgpu_test_ring_sync2(struct amdgpu_device *adev,
 382                             struct amdgpu_ring *ringA,
 383                             struct amdgpu_ring *ringB,
 384                             struct amdgpu_ring *ringC)
 385 {
 386         struct fence *fenceA = NULL, *fenceB = NULL;
 387         struct amdgpu_semaphore *semaphore = NULL;
 388         bool sigA, sigB;
 389         int i, r;
 390
 391         r = amdgpu_semaphore_create(adev, &semaphore);
 392         if (r) {
 393                 DRM_ERROR("Failed to create semaphore\n");
 394                 goto out_cleanup;
 395         }
 396
 397         r = amdgpu_ring_lock(ringA, 64);
 398         if (r) {
 399                 DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
 400                 goto out_cleanup;
 401         }
 402         amdgpu_semaphore_emit_wait(ringA, semaphore);
 403         amdgpu_ring_unlock_commit(ringA);
 404
 405         r = amdgpu_test_create_and_emit_fence(adev, ringA, &fenceA);
 406         if (r)
 407                 goto out_cleanup;
 408
 409         r = amdgpu_ring_lock(ringB, 64);
 410         if (r) {
 411                 DRM_ERROR("Failed to lock ring B %d\n", ringB->idx);
 412                 goto out_cleanup;
 413         }
 414         amdgpu_semaphore_emit_wait(ringB, semaphore);
 415         amdgpu_ring_unlock_commit(ringB);
 416         r = amdgpu_test_create_and_emit_fence(adev, ringB, &fenceB);
 417         if (r)
 418                 goto out_cleanup;
 419
 420         mdelay(1000);
 421
 422         if (fence_is_signaled(fenceA)) {
 423                 DRM_ERROR("Fence A signaled without waiting for semaphore.\n");
 424                 goto out_cleanup;
 425         }
 426         if (fence_is_signaled(fenceB)) {
 427                 DRM_ERROR("Fence B signaled without waiting for semaphore.\n");
 428                 goto out_cleanup;
 429         }
 430
 431         r = amdgpu_ring_lock(ringC, 64);
 432         if (r) {
 433                 DRM_ERROR("Failed to lock ring B %p\n", ringC);
 434                 goto out_cleanup;
 435         }
 436         amdgpu_semaphore_emit_signal(ringC, semaphore);
 437         amdgpu_ring_unlock_commit(ringC);
 438
 439         for (i = 0; i < 30; ++i) {
 440                 mdelay(100);
 441                 sigA = fence_is_signaled(fenceA);
 442                 sigB = fence_is_signaled(fenceB);
 443                 if (sigA || sigB)
 444                         break;
 445         }
 446
 447         if (!sigA && !sigB) {
 448                 DRM_ERROR("Neither fence A nor B has been signaled\n");
 449                 goto out_cleanup;
 450         } else if (sigA && sigB) {
 451                 DRM_ERROR("Both fence A and B has been signaled\n");
 452                 goto out_cleanup;
 453         }
 454
 455         DRM_INFO("Fence %c was first signaled\n", sigA ? 'A' : 'B');
 456
 457         r = amdgpu_ring_lock(ringC, 64);
 458         if (r) {
 459                 DRM_ERROR("Failed to lock ring B %p\n", ringC);
 460                 goto out_cleanup;
 461         }
 462         amdgpu_semaphore_emit_signal(ringC, semaphore);
 463         amdgpu_ring_unlock_commit(ringC);
 464
 465         mdelay(1000);
 466
 467         r = fence_wait(fenceA, false);
 468         if (r) {
 469                 DRM_ERROR("Failed to wait for sync fence A\n");
 470                 goto out_cleanup;
 471         }
 472         r = fence_wait(fenceB, false);
 473         if (r) {
 474                 DRM_ERROR("Failed to wait for sync fence B\n");
 475                 goto out_cleanup;
 476         }
 477
 478 out_cleanup:
 479         amdgpu_semaphore_free(adev, &semaphore, NULL);
 480
 481         if (fenceA)
 482                 fence_put(fenceA);
 483
 484         if (fenceB)
 485                 fence_put(fenceB);
 486
 487         if (r)
 488                 printk(KERN_WARNING "Error while testing ring sync (%d).\n", r);
 489 }
 490
 491 static bool amdgpu_test_sync_possible(struct amdgpu_ring *ringA,
 492                                       struct amdgpu_ring *ringB)
 493 {
 494         if (ringA == &ringA->adev->vce.ring[0] &&
 495             ringB == &ringB->adev->vce.ring[1])
 496                 return false;
 497
 498         return true;
 499 }
 500
 501 void amdgpu_test_syncing(struct amdgpu_device *adev)
 502 {
 503         int i, j, k;
 504
 505         for (i = 1; i < AMDGPU_MAX_RINGS; ++i) {
 506                 struct amdgpu_ring *ringA = adev->rings[i];
 507                 if (!ringA || !ringA->ready)
 508                         continue;
 509
 510                 for (j = 0; j < i; ++j) {
 511                         struct amdgpu_ring *ringB = adev->rings[j];
 512                         if (!ringB || !ringB->ready)
 513                                 continue;
 514
 515                         if (!amdgpu_test_sync_possible(ringA, ringB))
 516                                 continue;
 517
 518                         DRM_INFO("Testing syncing between rings %d and %d...\n", i, j);
 519                         amdgpu_test_ring_sync(adev, ringA, ringB);
 520
 521                         DRM_INFO("Testing syncing between rings %d and %d...\n", j, i);
 522                         amdgpu_test_ring_sync(adev, ringB, ringA);
 523
 524                         for (k = 0; k < j; ++k) {
 525                                 struct amdgpu_ring *ringC = adev->rings[k];
 526                                 if (!ringC || !ringC->ready)
 527                                         continue;
 528
 529                                 if (!amdgpu_test_sync_possible(ringA, ringC))
 530                                         continue;
 531
 532                                 if (!amdgpu_test_sync_possible(ringB, ringC))
 533                                         continue;
 534
 535                                 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", i, j, k);
 536                                 amdgpu_test_ring_sync2(adev, ringA, ringB, ringC);
 537
 538                                 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", i, k, j);
 539                                 amdgpu_test_ring_sync2(adev, ringA, ringC, ringB);
 540
 541                                 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", j, i, k);
 542                                 amdgpu_test_ring_sync2(adev, ringB, ringA, ringC);
 543
 544                                 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", j, k, i);
 545                                 amdgpu_test_ring_sync2(adev, ringB, ringC, ringA);
 546
 547                                 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", k, i, j);
 548                                 amdgpu_test_ring_sync2(adev, ringC, ringA, ringB);
 549
 550                                 DRM_INFO("Testing syncing between rings %d, %d and %d...\n", k, j, i);
 551                                 amdgpu_test_ring_sync2(adev, ringC, ringB, ringA);
 552                         }
 553                 }
 554         }
 555 }