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_bo *vram_obj = NULL;
  34         struct radeon_bo **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 buffers) / test size
  44          */
  45         n = rdev->mc.gtt_size - RADEON_IB_POOL_SIZE*64*1024 - rdev->cp.ring_size;
  46         if (rdev->wb.wb_obj)
  47                 n -= RADEON_GPU_PAGE_SIZE;
  48         if (rdev->ih.ring_obj)
  49                 n -= rdev->ih.ring_size;
  50         n /= size;
  51
  52         gtt_obj = kzalloc(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
  59         r = radeon_bo_create(rdev, size, PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM,
  60                                 &vram_obj);
  61         if (r) {
  62                 DRM_ERROR("Failed to create VRAM object\n");
  63                 goto out_cleanup;
  64         }
  65         r = radeon_bo_reserve(vram_obj, false);
  66         if (unlikely(r != 0))
  67                 goto out_cleanup;
  68         r = radeon_bo_pin(vram_obj, RADEON_GEM_DOMAIN_VRAM, &vram_addr);
  69         if (r) {
  70                 DRM_ERROR("Failed to pin VRAM object\n");
  71                 goto out_cleanup;
  72         }
  73         for (i = 0; i < n; i++) {
  74                 void *gtt_map, *vram_map;
  75                 void **gtt_start, **gtt_end;
  76                 void **vram_start, **vram_end;
  77
  78                 r = radeon_bo_create(rdev, size, PAGE_SIZE, true,
  79                                          RADEON_GEM_DOMAIN_GTT, gtt_obj + i);
  80                 if (r) {
  81                         DRM_ERROR("Failed to create GTT object %d\n", i);
  82                         goto out_cleanup;
  83                 }
  84
  85                 r = radeon_bo_reserve(gtt_obj[i], false);
  86                 if (unlikely(r != 0))
  87                         goto out_cleanup;
  88                 r = radeon_bo_pin(gtt_obj[i], RADEON_GEM_DOMAIN_GTT, &gtt_addr);
  89                 if (r) {
  90                         DRM_ERROR("Failed to pin GTT object %d\n", i);
  91                         goto out_cleanup;
  92                 }
  93
  94                 r = radeon_bo_kmap(gtt_obj[i], &gtt_map);
  95                 if (r) {
  96                         DRM_ERROR("Failed to map GTT object %d\n", i);
  97                         goto out_cleanup;
  98                 }
  99
 100                 for (gtt_start = gtt_map, gtt_end = gtt_map + size;
 101                      gtt_start < gtt_end;
 102                      gtt_start++)
 103                         *gtt_start = gtt_start;
 104
 105                 radeon_bo_kunmap(gtt_obj[i]);
 106
 107                 r = radeon_fence_create(rdev, &fence);
 108                 if (r) {
 109                         DRM_ERROR("Failed to create GTT->VRAM fence %d\n", i);
 110                         goto out_cleanup;
 111                 }
 112
 113                 r = radeon_copy(rdev, gtt_addr, vram_addr, size / RADEON_GPU_PAGE_SIZE, fence);
 114                 if (r) {
 115                         DRM_ERROR("Failed GTT->VRAM copy %d\n", i);
 116                         goto out_cleanup;
 117                 }
 118
 119                 r = radeon_fence_wait(fence, false);
 120                 if (r) {
 121                         DRM_ERROR("Failed to wait for GTT->VRAM fence %d\n", i);
 122                         goto out_cleanup;
 123                 }
 124
 125                 radeon_fence_unref(&fence);
 126
 127                 r = radeon_bo_kmap(vram_obj, &vram_map);
 128                 if (r) {
 129                         DRM_ERROR("Failed to map VRAM object after copy %d\n", i);
 130                         goto out_cleanup;
 131                 }
 132
 133                 for (gtt_start = gtt_map, gtt_end = gtt_map + size,
 134                      vram_start = vram_map, vram_end = vram_map + size;
 135                      vram_start < vram_end;
 136                      gtt_start++, vram_start++) {
 137                         if (*vram_start != gtt_start) {
 138                                 DRM_ERROR("Incorrect GTT->VRAM copy %d: Got 0x%p, "
 139                                           "expected 0x%p (GTT map 0x%p-0x%p)\n",
 140                                           i, *vram_start, gtt_start, gtt_map,
 141                                           gtt_end);
 142                                 radeon_bo_kunmap(vram_obj);
 143                                 goto out_cleanup;
 144                         }
 145                         *vram_start = vram_start;
 146                 }
 147
 148                 radeon_bo_kunmap(vram_obj);
 149
 150                 r = radeon_fence_create(rdev, &fence);
 151                 if (r) {
 152                         DRM_ERROR("Failed to create VRAM->GTT fence %d\n", i);
 153                         goto out_cleanup;
 154                 }
 155
 156                 r = radeon_copy(rdev, vram_addr, gtt_addr, size / RADEON_GPU_PAGE_SIZE, fence);
 157                 if (r) {
 158                         DRM_ERROR("Failed VRAM->GTT copy %d\n", i);
 159                         goto out_cleanup;
 160                 }
 161
 162                 r = radeon_fence_wait(fence, false);
 163                 if (r) {
 164                         DRM_ERROR("Failed to wait for VRAM->GTT fence %d\n", i);
 165                         goto out_cleanup;
 166                 }
 167
 168                 radeon_fence_unref(&fence);
 169
 170                 r = radeon_bo_kmap(gtt_obj[i], &gtt_map);
 171                 if (r) {
 172                         DRM_ERROR("Failed to map GTT object after copy %d\n", i);
 173                         goto out_cleanup;
 174                 }
 175
 176                 for (gtt_start = gtt_map, gtt_end = gtt_map + size,
 177                      vram_start = vram_map, vram_end = vram_map + size;
 178                      gtt_start < gtt_end;
 179                      gtt_start++, vram_start++) {
 180                         if (*gtt_start != vram_start) {
 181                                 DRM_ERROR("Incorrect VRAM->GTT copy %d: Got 0x%p, "
 182                                           "expected 0x%p (VRAM map 0x%p-0x%p)\n",
 183                                           i, *gtt_start, vram_start, vram_map,
 184                                           vram_end);
 185                                 radeon_bo_kunmap(gtt_obj[i]);
 186                                 goto out_cleanup;
 187                         }
 188                 }
 189
 190                 radeon_bo_kunmap(gtt_obj[i]);
 191
 192                 DRM_INFO("Tested GTT->VRAM and VRAM->GTT copy for GTT offset 0x%llx\n",
 193                          gtt_addr - rdev->mc.gtt_start);
 194         }
 195
 196 out_cleanup:
 197         if (vram_obj) {
 198                 if (radeon_bo_is_reserved(vram_obj)) {
 199                         radeon_bo_unpin(vram_obj);
 200                         radeon_bo_unreserve(vram_obj);
 201                 }
 202                 radeon_bo_unref(&vram_obj);
 203         }
 204         if (gtt_obj) {
 205                 for (i = 0; i < n; i++) {
 206                         if (gtt_obj[i]) {
 207                                 if (radeon_bo_is_reserved(gtt_obj[i])) {
 208                                         radeon_bo_unpin(gtt_obj[i]);
 209                                         radeon_bo_unreserve(gtt_obj[i]);
 210                                 }
 211                                 radeon_bo_unref(&gtt_obj[i]);
 212                         }
 213                 }
 214                 kfree(gtt_obj);
 215         }
 216         if (fence) {
 217                 radeon_fence_unref(&fence);
 218         }
 219         if (r) {
 220                 printk(KERN_WARNING "Error while testing BO move.\n");
 221         }
 222 }