drivers/gpu/drm/radeon/radeon_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/radeon_drm.h>
  26 #include "radeon_reg.h"
  27 #include "radeon.h"
  28
  29
  30 /* Test BO GTT->VRAM and VRAM->GTT GPU copies across the whole GTT aperture */
  31 void radeon_test_moves(struct radeon_device *rdev)
  32 {
  33         struct radeon_object *vram_obj = NULL;
  34         struct radeon_object **gtt_obj = NULL;
  35         struct radeon_fence *fence = NULL;
  36         uint64_t gtt_addr, vram_addr;
  37         unsigned i, n, size;
  38         int r;
  39
  40         size = 1024 * 1024;
  41
  42         /* Number of tests =
  43          * (Total GTT - IB pool - writeback page - ring buffer) / test size
  44          */
  45         n = (rdev->mc.gtt_size - RADEON_IB_POOL_SIZE*64*1024 - RADEON_GPU_PAGE_SIZE -
  46              rdev->cp.ring_size) / size;
  47
  48         gtt_obj = kzalloc(n * sizeof(*gtt_obj), GFP_KERNEL);
  49         if (!gtt_obj) {
  50                 DRM_ERROR("Failed to allocate %d pointers\n", n);
  51                 r = 1;
  52                 goto out_cleanup;
  53         }
  54
  55         r = radeon_object_create(rdev, NULL, size, true, RADEON_GEM_DOMAIN_VRAM,
  56                                  false, &vram_obj);
  57         if (r) {
  58                 DRM_ERROR("Failed to create VRAM object\n");
  59                 goto out_cleanup;
  60         }
  61
  62         r = radeon_object_pin(vram_obj, RADEON_GEM_DOMAIN_VRAM, &vram_addr);
  63         if (r) {
  64                 DRM_ERROR("Failed to pin VRAM object\n");
  65                 goto out_cleanup;
  66         }
  67
  68         for (i = 0; i < n; i++) {
  69                 void *gtt_map, *vram_map;
  70                 void **gtt_start, **gtt_end;
  71                 void **vram_start, **vram_end;
  72
  73                 r = radeon_object_create(rdev, NULL, size, true,
  74                                          RADEON_GEM_DOMAIN_GTT, false, gtt_obj + i);
  75                 if (r) {
  76                         DRM_ERROR("Failed to create GTT object %d\n", i);
  77                         goto out_cleanup;
  78                 }
  79
  80                 r = radeon_object_pin(gtt_obj[i], RADEON_GEM_DOMAIN_GTT, &gtt_addr);
  81                 if (r) {
  82                         DRM_ERROR("Failed to pin GTT object %d\n", i);
  83                         goto out_cleanup;
  84                 }
  85
  86                 r = radeon_object_kmap(gtt_obj[i], &gtt_map);
  87                 if (r) {
  88                         DRM_ERROR("Failed to map GTT object %d\n", i);
  89                         goto out_cleanup;
  90                 }
  91
  92                 for (gtt_start = gtt_map, gtt_end = gtt_map + size;
  93                      gtt_start < gtt_end;
  94                      gtt_start++)
  95                         *gtt_start = gtt_start;
  96
  97                 radeon_object_kunmap(gtt_obj[i]);
  98
  99                 r = radeon_fence_create(rdev, &fence);
 100                 if (r) {
 101                         DRM_ERROR("Failed to create GTT->VRAM fence %d\n", i);
 102                         goto out_cleanup;
 103                 }
 104
 105                 r = radeon_copy(rdev, gtt_addr, vram_addr, size / RADEON_GPU_PAGE_SIZE, fence);
 106                 if (r) {
 107                         DRM_ERROR("Failed GTT->VRAM copy %d\n", i);
 108                         goto out_cleanup;
 109                 }
 110
 111                 r = radeon_fence_wait(fence, false);
 112                 if (r) {
 113                         DRM_ERROR("Failed to wait for GTT->VRAM fence %d\n", i);
 114                         goto out_cleanup;
 115                 }
 116
 117                 radeon_fence_unref(&fence);
 118
 119                 r = radeon_object_kmap(vram_obj, &vram_map);
 120                 if (r) {
 121                         DRM_ERROR("Failed to map VRAM object after copy %d\n", i);
 122                         goto out_cleanup;
 123                 }
 124
 125                 for (gtt_start = gtt_map, gtt_end = gtt_map + size,
 126                      vram_start = vram_map, vram_end = vram_map + size;
 127                      vram_start < vram_end;
 128                      gtt_start++, vram_start++) {
 129                         if (*vram_start != gtt_start) {
 130                                 DRM_ERROR("Incorrect GTT->VRAM copy %d: Got 0x%p, "
 131                                           "expected 0x%p (GTT map 0x%p-0x%p)\n",
 132                                           i, *vram_start, gtt_start, gtt_map,
 133                                           gtt_end);
 134                                 radeon_object_kunmap(vram_obj);
 135                                 goto out_cleanup;
 136                         }
 137                         *vram_start = vram_start;
 138                 }
 139
 140                 radeon_object_kunmap(vram_obj);
 141
 142                 r = radeon_fence_create(rdev, &fence);
 143                 if (r) {
 144                         DRM_ERROR("Failed to create VRAM->GTT fence %d\n", i);
 145                         goto out_cleanup;
 146                 }
 147
 148                 r = radeon_copy(rdev, vram_addr, gtt_addr, size / RADEON_GPU_PAGE_SIZE, fence);
 149                 if (r) {
 150                         DRM_ERROR("Failed VRAM->GTT copy %d\n", i);
 151                         goto out_cleanup;
 152                 }
 153
 154                 r = radeon_fence_wait(fence, false);
 155                 if (r) {
 156                         DRM_ERROR("Failed to wait for VRAM->GTT fence %d\n", i);
 157                         goto out_cleanup;
 158                 }
 159
 160                 radeon_fence_unref(&fence);
 161
 162                 r = radeon_object_kmap(gtt_obj[i], &gtt_map);
 163                 if (r) {
 164                         DRM_ERROR("Failed to map GTT object after copy %d\n", i);
 165                         goto out_cleanup;
 166                 }
 167
 168                 for (gtt_start = gtt_map, gtt_end = gtt_map + size,
 169                      vram_start = vram_map, vram_end = vram_map + size;
 170                      gtt_start < gtt_end;
 171                      gtt_start++, vram_start++) {
 172                         if (*gtt_start != vram_start) {
 173                                 DRM_ERROR("Incorrect VRAM->GTT copy %d: Got 0x%p, "
 174                                           "expected 0x%p (VRAM map 0x%p-0x%p)\n",
 175                                           i, *gtt_start, vram_start, vram_map,
 176                                           vram_end);
 177                                 radeon_object_kunmap(gtt_obj[i]);
 178                                 goto out_cleanup;
 179                         }
 180                 }
 181
 182                 radeon_object_kunmap(gtt_obj[i]);
 183
 184                 DRM_INFO("Tested GTT->VRAM and VRAM->GTT copy for GTT offset 0x%llx\n",
 185                          gtt_addr - rdev->mc.gtt_location);
 186         }
 187
 188 out_cleanup:
 189         if (vram_obj) {
 190                 radeon_object_unpin(vram_obj);
 191                 radeon_object_unref(&vram_obj);
 192         }
 193         if (gtt_obj) {
 194                 for (i = 0; i < n; i++) {
 195                         if (gtt_obj[i]) {
 196                                 radeon_object_unpin(gtt_obj[i]);
 197                                 radeon_object_unref(&gtt_obj[i]);
 198                         }
 199                 }
 200                 kfree(gtt_obj);
 201         }
 202         if (fence) {
 203                 radeon_fence_unref(&fence);
 204         }
 205         if (r) {
 206                 printk(KERN_WARNING "Error while testing BO move.\n");
 207         }
 208 }
 209