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