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 #include <drm/drmP.h>
  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 - IB pool - writeback page - ring buffers) / test size
  46          */
  47         n = adev->gmc.gart_size - AMDGPU_IB_POOL_SIZE*64*1024;
  48         for (i = 0; i < AMDGPU_MAX_RINGS; ++i)
  49                 if (adev->rings[i])
  50                         n -= adev->rings[i]->ring_size;
  51         if (adev->wb.wb_obj)
  52                 n -= AMDGPU_GPU_PAGE_SIZE;
  53         if (adev->irq.ih.ring_obj)
  54                 n -= adev->irq.ih.ring_size;
  55         n /= size;
  56
  57         gtt_obj = kcalloc(n, sizeof(*gtt_obj), GFP_KERNEL);
  58         if (!gtt_obj) {
  59                 DRM_ERROR("Failed to allocate %d pointers\n", n);
  60                 r = 1;
  61                 goto out_cleanup;
  62         }
  63         memset(&bp, 0, sizeof(bp));
  64         bp.size = size;
  65         bp.byte_align = PAGE_SIZE;
  66         bp.domain = AMDGPU_GEM_DOMAIN_VRAM;
  67         bp.flags = 0;
  68         bp.type = ttm_bo_type_kernel;
  69         bp.resv = NULL;
  70
  71         r = amdgpu_bo_create(adev, &bp, &vram_obj);
  72         if (r) {
  73                 DRM_ERROR("Failed to create VRAM object\n");
  74                 goto out_cleanup;
  75         }
  76         r = amdgpu_bo_reserve(vram_obj, false);
  77         if (unlikely(r != 0))
  78                 goto out_unref;
  79         r = amdgpu_bo_pin(vram_obj, AMDGPU_GEM_DOMAIN_VRAM);
  80         if (r) {
  81                 DRM_ERROR("Failed to pin VRAM object\n");
  82                 goto out_unres;
  83         }
  84         vram_addr = amdgpu_bo_gpu_offset(vram_obj);
  85         for (i = 0; i < n; i++) {
  86                 void *gtt_map, *vram_map;
  87                 void **gart_start, **gart_end;
  88                 void **vram_start, **vram_end;
  89                 struct dma_fence *fence = NULL;
  90
  91                 bp.domain = AMDGPU_GEM_DOMAIN_GTT;
  92                 r = amdgpu_bo_create(adev, &bp, 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 = amdgpu_bo_reserve(gtt_obj[i], false);
  99                 if (unlikely(r != 0))
 100                         goto out_lclean_unref;
 101                 r = amdgpu_bo_pin(gtt_obj[i], AMDGPU_GEM_DOMAIN_GTT);
 102                 if (r) {
 103                         DRM_ERROR("Failed to pin GTT object %d\n", i);
 104                         goto out_lclean_unres;
 105                 }
 106                 r = amdgpu_ttm_alloc_gart(&gtt_obj[i]->tbo);
 107                 if (r) {
 108                         DRM_ERROR("%p bind failed\n", gtt_obj[i]);
 109                         goto out_lclean_unpin;
 110                 }
 111                 gart_addr = amdgpu_bo_gpu_offset(gtt_obj[i]);
 112
 113                 r = amdgpu_bo_kmap(gtt_obj[i], &gtt_map);
 114                 if (r) {
 115                         DRM_ERROR("Failed to map GTT object %d\n", i);
 116                         goto out_lclean_unpin;
 117                 }
 118
 119                 for (gart_start = gtt_map, gart_end = gtt_map + size;
 120                      gart_start < gart_end;
 121                      gart_start++)
 122                         *gart_start = gart_start;
 123
 124                 amdgpu_bo_kunmap(gtt_obj[i]);
 125
 126                 r = amdgpu_copy_buffer(ring, gart_addr, vram_addr,
 127                                        size, NULL, &fence, false, false);
 128
 129                 if (r) {
 130                         DRM_ERROR("Failed GTT->VRAM copy %d\n", i);
 131                         goto out_lclean_unpin;
 132                 }
 133
 134                 r = dma_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                 dma_fence_put(fence);
 141
 142                 r = amdgpu_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 (gart_start = gtt_map, gart_end = gtt_map + size,
 149                      vram_start = vram_map, vram_end = vram_map + size;
 150                      vram_start < vram_end;
 151                      gart_start++, vram_start++) {
 152                         if (*vram_start != gart_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, gart_start,
 157                                           (unsigned long long)
 158                                           (gart_addr - adev->gmc.gart_start +
 159                                            (void*)gart_start - gtt_map),
 160                                           (unsigned long long)
 161                                           (vram_addr - adev->gmc.vram_start +
 162                                            (void*)gart_start - gtt_map));
 163                                 amdgpu_bo_kunmap(vram_obj);
 164                                 goto out_lclean_unpin;
 165                         }
 166                         *vram_start = vram_start;
 167                 }
 168
 169                 amdgpu_bo_kunmap(vram_obj);
 170
 171                 r = amdgpu_copy_buffer(ring, vram_addr, gart_addr,
 172                                        size, NULL, &fence, false, false);
 173
 174                 if (r) {
 175                         DRM_ERROR("Failed VRAM->GTT copy %d\n", i);
 176                         goto out_lclean_unpin;
 177                 }
 178
 179                 r = dma_fence_wait(fence, false);
 180                 if (r) {
 181                         DRM_ERROR("Failed to wait for VRAM->GTT fence %d\n", i);
 182                         goto out_lclean_unpin;
 183                 }
 184
 185                 dma_fence_put(fence);
 186
 187                 r = amdgpu_bo_kmap(gtt_obj[i], &gtt_map);
 188                 if (r) {
 189                         DRM_ERROR("Failed to map GTT object after copy %d\n", i);
 190                         goto out_lclean_unpin;
 191                 }
 192
 193                 for (gart_start = gtt_map, gart_end = gtt_map + size,
 194                      vram_start = vram_map, vram_end = vram_map + size;
 195                      gart_start < gart_end;
 196                      gart_start++, vram_start++) {
 197                         if (*gart_start != vram_start) {
 198                                 DRM_ERROR("Incorrect VRAM->GTT copy %d: Got 0x%p, "
 199                                           "expected 0x%p (VRAM/GTT offset "
 200                                           "0x%16llx/0x%16llx)\n",
 201                                           i, *gart_start, vram_start,
 202                                           (unsigned long long)
 203                                           (vram_addr - adev->gmc.vram_start +
 204                                            (void*)vram_start - vram_map),
 205                                           (unsigned long long)
 206                                           (gart_addr - adev->gmc.gart_start +
 207                                            (void*)vram_start - vram_map));
 208                                 amdgpu_bo_kunmap(gtt_obj[i]);
 209                                 goto out_lclean_unpin;
 210                         }
 211                 }
 212
 213                 amdgpu_bo_kunmap(gtt_obj[i]);
 214
 215                 DRM_INFO("Tested GTT->VRAM and VRAM->GTT copy for GTT offset 0x%llx\n",
 216                          gart_addr - adev->gmc.gart_start);
 217                 continue;
 218
 219 out_lclean_unpin:
 220                 amdgpu_bo_unpin(gtt_obj[i]);
 221 out_lclean_unres:
 222                 amdgpu_bo_unreserve(gtt_obj[i]);
 223 out_lclean_unref:
 224                 amdgpu_bo_unref(&gtt_obj[i]);
 225 out_lclean:
 226                 for (--i; i >= 0; --i) {
 227                         amdgpu_bo_unpin(gtt_obj[i]);
 228                         amdgpu_bo_unreserve(gtt_obj[i]);
 229                         amdgpu_bo_unref(&gtt_obj[i]);
 230                 }
 231                 if (fence)
 232                         dma_fence_put(fence);
 233                 break;
 234         }
 235
 236         amdgpu_bo_unpin(vram_obj);
 237 out_unres:
 238         amdgpu_bo_unreserve(vram_obj);
 239 out_unref:
 240         amdgpu_bo_unref(&vram_obj);
 241 out_cleanup:
 242         kfree(gtt_obj);
 243         if (r) {
 244                 pr_warn("Error while testing BO move\n");
 245         }
 246 }
 247
 248 void amdgpu_test_moves(struct amdgpu_device *adev)
 249 {
 250         if (adev->mman.buffer_funcs)
 251                 amdgpu_do_test_moves(adev);
 252 }