drivers/gpu/drm/amd/amdgpu/amdgpu_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
  26 #include <drm/amdgpu_drm.h>
  27 #include "amdgpu.h"
  28 #include "amdgpu_uvd.h"
  29 #include "amdgpu_vce.h"
  30
  31 /* Test BO GTT->VRAM and VRAM->GTT GPU copies across the whole GTT aperture */
  32 static void amdgpu_do_test_moves(struct amdgpu_device *adev)
  33 {
  34         struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
  35         struct amdgpu_bo *vram_obj = NULL;
  36         struct amdgpu_bo **gtt_obj = NULL;
  37         struct amdgpu_bo_param bp;
  38         uint64_t gart_addr, vram_addr;
  39         unsigned n, size;
  40         int i, r;
  41
  42         size = 1024 * 1024;
  43
  44         /* Number of tests =
  45          * (Total GTT - gart_pin_size - (2 transfer windows for buffer moves)) / test size
  46          */
  47         n = adev->gmc.gart_size - atomic64_read(&adev->gart_pin_size);
  48         n -= AMDGPU_GTT_MAX_TRANSFER_SIZE * AMDGPU_GTT_NUM_TRANSFER_WINDOWS *
  49                 AMDGPU_GPU_PAGE_SIZE;
  50         n /= size;
  51
  52         gtt_obj = kcalloc(n, sizeof(*gtt_obj), GFP_KERNEL);
  53         if (!gtt_obj) {
  54                 DRM_ERROR("Failed to allocate %d pointers\n", n);
  55                 r = 1;
  56                 goto out_cleanup;
  57         }
  58         memset(&bp, 0, sizeof(bp));
  59         bp.size = size;
  60         bp.byte_align = PAGE_SIZE;
  61         bp.domain = AMDGPU_GEM_DOMAIN_VRAM;
  62         bp.flags = 0;
  63         bp.type = ttm_bo_type_kernel;
  64         bp.resv = NULL;
  65         bp.bo_ptr_size = sizeof(struct amdgpu_bo);
  66
  67         r = amdgpu_bo_create(adev, &bp, &vram_obj);
  68         if (r) {
  69                 DRM_ERROR("Failed to create VRAM object\n");
  70                 goto out_cleanup;
  71         }
  72         r = amdgpu_bo_reserve(vram_obj, false);
  73         if (unlikely(r != 0))
  74                 goto out_unref;
  75         r = amdgpu_bo_pin(vram_obj, AMDGPU_GEM_DOMAIN_VRAM);
  76         if (r) {
  77                 DRM_ERROR("Failed to pin VRAM object\n");
  78                 goto out_unres;
  79         }
  80         vram_addr = amdgpu_bo_gpu_offset(vram_obj);
  81         for (i = 0; i < n; i++) {
  82                 void *gtt_map, *vram_map;
  83                 void **gart_start, **gart_end;
  84                 void **vram_start, **vram_end;
  85                 struct dma_fence *fence = NULL;
  86
  87                 bp.domain = AMDGPU_GEM_DOMAIN_GTT;
  88                 r = amdgpu_bo_create(adev, &bp, gtt_obj + i);
  89                 if (r) {
  90                         DRM_ERROR("Failed to create GTT object %d\n", i);
  91                         goto out_lclean;
  92                 }
  93
  94                 r = amdgpu_bo_reserve(gtt_obj[i], false);
  95                 if (unlikely(r != 0))
  96                         goto out_lclean_unref;
  97                 r = amdgpu_bo_pin(gtt_obj[i], AMDGPU_GEM_DOMAIN_GTT);
  98                 if (r) {
  99                         DRM_ERROR("Failed to pin GTT object %d\n", i);
 100                         goto out_lclean_unres;
 101                 }
 102                 r = amdgpu_ttm_alloc_gart(&gtt_obj[i]->tbo);
 103                 if (r) {
 104                         DRM_ERROR("%p bind failed\n", gtt_obj[i]);
 105                         goto out_lclean_unpin;
 106                 }
 107                 gart_addr = amdgpu_bo_gpu_offset(gtt_obj[i]);
 108
 109                 r = amdgpu_bo_kmap(gtt_obj[i], &gtt_map);
 110                 if (r) {
 111                         DRM_ERROR("Failed to map GTT object %d\n", i);
 112                         goto out_lclean_unpin;
 113                 }
 114
 115                 for (gart_start = gtt_map, gart_end = gtt_map + size;
 116                      gart_start < gart_end;
 117                      gart_start++)
 118                         *gart_start = gart_start;
 119
 120                 amdgpu_bo_kunmap(gtt_obj[i]);
 121
 122                 r = amdgpu_copy_buffer(ring, gart_addr, vram_addr,
 123                                        size, NULL, &fence, false, false, false);
 124
 125                 if (r) {
 126                         DRM_ERROR("Failed GTT->VRAM copy %d\n", i);
 127                         goto out_lclean_unpin;
 128                 }
 129
 130                 r = dma_fence_wait(fence, false);
 131                 if (r) {
 132                         DRM_ERROR("Failed to wait for GTT->VRAM fence %d\n", i);
 133                         goto out_lclean_unpin;
 134                 }
 135
 136                 dma_fence_put(fence);
 137                 fence = NULL;
 138
 139                 r = amdgpu_bo_kmap(vram_obj, &vram_map);
 140                 if (r) {
 141                         DRM_ERROR("Failed to map VRAM object after copy %d\n", i);
 142                         goto out_lclean_unpin;
 143                 }
 144
 145                 for (gart_start = gtt_map, gart_end = gtt_map + size,
 146                      vram_start = vram_map, vram_end = vram_map + size;
 147                      vram_start < vram_end;
 148                      gart_start++, vram_start++) {
 149                         if (*vram_start != gart_start) {
 150                                 DRM_ERROR("Incorrect GTT->VRAM copy %d: Got 0x%p, "
 151                                           "expected 0x%p (GTT/VRAM offset "
 152                                           "0x%16llx/0x%16llx)\n",
 153                                           i, *vram_start, gart_start,
 154                                           (unsigned long long)
 155                                           (gart_addr - adev->gmc.gart_start +
 156                                            (void *)gart_start - gtt_map),
 157                                           (unsigned long long)
 158                                           (vram_addr - adev->gmc.vram_start +
 159                                            (void *)gart_start - gtt_map));
 160                                 amdgpu_bo_kunmap(vram_obj);
 161                                 goto out_lclean_unpin;
 162                         }
 163                         *vram_start = vram_start;
 164                 }
 165
 166                 amdgpu_bo_kunmap(vram_obj);
 167
 168                 r = amdgpu_copy_buffer(ring, vram_addr, gart_addr,
 169                                        size, NULL, &fence, false, false, false);
 170
 171                 if (r) {
 172                         DRM_ERROR("Failed VRAM->GTT copy %d\n", i);
 173                         goto out_lclean_unpin;
 174                 }
 175
 176                 r = dma_fence_wait(fence, false);
 177                 if (r) {
 178                         DRM_ERROR("Failed to wait for VRAM->GTT fence %d\n", i);
 179                         goto out_lclean_unpin;
 180                 }
 181
 182                 dma_fence_put(fence);
 183                 fence = NULL;
 184
 185                 r = amdgpu_bo_kmap(gtt_obj[i], &gtt_map);
 186                 if (r) {
 187                         DRM_ERROR("Failed to map GTT object after copy %d\n", i);
 188                         goto out_lclean_unpin;
 189                 }
 190
 191                 for (gart_start = gtt_map, gart_end = gtt_map + size,
 192                      vram_start = vram_map, vram_end = vram_map + size;
 193                      gart_start < gart_end;
 194                      gart_start++, vram_start++) {
 195                         if (*gart_start != vram_start) {
 196                                 DRM_ERROR("Incorrect VRAM->GTT copy %d: Got 0x%p, "
 197                                           "expected 0x%p (VRAM/GTT offset "
 198                                           "0x%16llx/0x%16llx)\n",
 199                                           i, *gart_start, vram_start,
 200                                           (unsigned long long)
 201                                           (vram_addr - adev->gmc.vram_start +
 202                                            (void *)vram_start - vram_map),
 203                                           (unsigned long long)
 204                                           (gart_addr - adev->gmc.gart_start +
 205                                            (void *)vram_start - vram_map));
 206                                 amdgpu_bo_kunmap(gtt_obj[i]);
 207                                 goto out_lclean_unpin;
 208                         }
 209                 }
 210
 211                 amdgpu_bo_kunmap(gtt_obj[i]);
 212
 213                 DRM_INFO("Tested GTT->VRAM and VRAM->GTT copy for GTT offset 0x%llx\n",
 214                          gart_addr - adev->gmc.gart_start);
 215                 continue;
 216
 217 out_lclean_unpin:
 218                 amdgpu_bo_unpin(gtt_obj[i]);
 219 out_lclean_unres:
 220                 amdgpu_bo_unreserve(gtt_obj[i]);
 221 out_lclean_unref:
 222                 amdgpu_bo_unref(&gtt_obj[i]);
 223 out_lclean:
 224                 for (--i; i >= 0; --i) {
 225                         amdgpu_bo_unpin(gtt_obj[i]);
 226                         amdgpu_bo_unreserve(gtt_obj[i]);
 227                         amdgpu_bo_unref(&gtt_obj[i]);
 228                 }
 229                 if (fence)
 230                         dma_fence_put(fence);
 231                 break;
 232         }
 233
 234         amdgpu_bo_unpin(vram_obj);
 235 out_unres:
 236         amdgpu_bo_unreserve(vram_obj);
 237 out_unref:
 238         amdgpu_bo_unref(&vram_obj);
 239 out_cleanup:
 240         kfree(gtt_obj);
 241         if (r) {
 242                 pr_warn("Error while testing BO move\n");
 243         }
 244 }
 245
 246 void amdgpu_test_moves(struct amdgpu_device *adev)
 247 {
 248         if (adev->mman.buffer_funcs)
 249                 amdgpu_do_test_moves(adev);
 250 }