release/src-rt-6.x.4708/linux/linux-2.6.36/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 buffer) / test size
  44          */
  45         n = ((u32)(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_bo_create(rdev, NULL, size, true, RADEON_GEM_DOMAIN_VRAM,
  56                                 &vram_obj);
  57         if (r) {
  58                 DRM_ERROR("Failed to create VRAM object\n");
  59                 goto out_cleanup;
  60         }
  61         r = radeon_bo_reserve(vram_obj, false);
  62         if (unlikely(r != 0))
  63                 goto out_cleanup;
  64         r = radeon_bo_pin(vram_obj, RADEON_GEM_DOMAIN_VRAM, &vram_addr);
  65         if (r) {
  66                 DRM_ERROR("Failed to pin VRAM object\n");
  67                 goto out_cleanup;
  68         }
  69         for (i = 0; i < n; i++) {
  70                 void *gtt_map, *vram_map;
  71                 void **gtt_start, **gtt_end;
  72                 void **vram_start, **vram_end;
  73
  74                 r = radeon_bo_create(rdev, NULL, size, true,
  75                                          RADEON_GEM_DOMAIN_GTT, gtt_obj + i);
  76                 if (r) {
  77                         DRM_ERROR("Failed to create GTT object %d\n", i);
  78                         goto out_cleanup;
  79                 }
  80
  81                 r = radeon_bo_reserve(gtt_obj[i], false);
  82                 if (unlikely(r != 0))
  83                         goto out_cleanup;
  84                 r = radeon_bo_pin(gtt_obj[i], RADEON_GEM_DOMAIN_GTT, &gtt_addr);
  85                 if (r) {
  86                         DRM_ERROR("Failed to pin GTT object %d\n", i);
  87                         goto out_cleanup;
  88                 }
  89
  90                 r = radeon_bo_kmap(gtt_obj[i], &gtt_map);
  91                 if (r) {
  92                         DRM_ERROR("Failed to map GTT object %d\n", i);
  93                         goto out_cleanup;
  94                 }
  95
  96                 for (gtt_start = gtt_map, gtt_end = gtt_map + size;
  97                      gtt_start < gtt_end;
  98                      gtt_start++)
  99                         *gtt_start = gtt_start;
 100
 101                 radeon_bo_kunmap(gtt_obj[i]);
 102
 103                 r = radeon_fence_create(rdev, &fence);
 104                 if (r) {
 105                         DRM_ERROR("Failed to create GTT->VRAM fence %d\n", i);
 106                         goto out_cleanup;
 107                 }
 108
 109                 r = radeon_copy(rdev, gtt_addr, vram_addr, size / RADEON_GPU_PAGE_SIZE, fence);
 110                 if (r) {
 111                         DRM_ERROR("Failed GTT->VRAM copy %d\n", i);
 112                         goto out_cleanup;
 113                 }
 114
 115                 r = radeon_fence_wait(fence, false);
 116                 if (r) {
 117                         DRM_ERROR("Failed to wait for GTT->VRAM fence %d\n", i);
 118                         goto out_cleanup;
 119                 }
 120
 121                 radeon_fence_unref(&fence);
 122
 123                 r = radeon_bo_kmap(vram_obj, &vram_map);
 124                 if (r) {
 125                         DRM_ERROR("Failed to map VRAM object after copy %d\n", i);
 126                         goto out_cleanup;
 127                 }
 128
 129                 for (gtt_start = gtt_map, gtt_end = gtt_map + size,
 130                      vram_start = vram_map, vram_end = vram_map + size;
 131                      vram_start < vram_end;
 132                      gtt_start++, vram_start++) {
 133                         if (*vram_start != gtt_start) {
 134                                 DRM_ERROR("Incorrect GTT->VRAM copy %d: Got 0x%p, "
 135                                           "expected 0x%p (GTT map 0x%p-0x%p)\n",
 136                                           i, *vram_start, gtt_start, gtt_map,
 137                                           gtt_end);
 138                                 radeon_bo_kunmap(vram_obj);
 139                                 goto out_cleanup;
 140                         }
 141                         *vram_start = vram_start;
 142                 }
 143
 144                 radeon_bo_kunmap(vram_obj);
 145
 146                 r = radeon_fence_create(rdev, &fence);
 147                 if (r) {
 148                         DRM_ERROR("Failed to create VRAM->GTT fence %d\n", i);
 149                         goto out_cleanup;
 150                 }
 151
 152                 r = radeon_copy(rdev, vram_addr, gtt_addr, size / RADEON_GPU_PAGE_SIZE, fence);
 153                 if (r) {
 154                         DRM_ERROR("Failed VRAM->GTT copy %d\n", i);
 155                         goto out_cleanup;
 156                 }
 157
 158                 r = radeon_fence_wait(fence, false);
 159                 if (r) {
 160                         DRM_ERROR("Failed to wait for VRAM->GTT fence %d\n", i);
 161                         goto out_cleanup;
 162                 }
 163
 164                 radeon_fence_unref(&fence);
 165
 166                 r = radeon_bo_kmap(gtt_obj[i], &gtt_map);
 167                 if (r) {
 168                         DRM_ERROR("Failed to map GTT object after copy %d\n", i);
 169                         goto out_cleanup;
 170                 }
 171
 172                 for (gtt_start = gtt_map, gtt_end = gtt_map + size,
 173                      vram_start = vram_map, vram_end = vram_map + size;
 174                      gtt_start < gtt_end;
 175                      gtt_start++, vram_start++) {
 176                         if (*gtt_start != vram_start) {
 177                                 DRM_ERROR("Incorrect VRAM->GTT copy %d: Got 0x%p, "
 178                                           "expected 0x%p (VRAM map 0x%p-0x%p)\n",
 179                                           i, *gtt_start, vram_start, vram_map,
 180                                           vram_end);
 181                                 radeon_bo_kunmap(gtt_obj[i]);
 182                                 goto out_cleanup;
 183                         }
 184                 }
 185
 186                 radeon_bo_kunmap(gtt_obj[i]);
 187
 188                 DRM_INFO("Tested GTT->VRAM and VRAM->GTT copy for GTT offset 0x%llx\n",
 189                          gtt_addr - rdev->mc.gtt_start);
 190         }
 191
 192 out_cleanup:
 193         if (vram_obj) {
 194                 if (radeon_bo_is_reserved(vram_obj)) {
 195                         radeon_bo_unpin(vram_obj);
 196                         radeon_bo_unreserve(vram_obj);
 197                 }
 198                 radeon_bo_unref(&vram_obj);
 199         }
 200         if (gtt_obj) {
 201                 for (i = 0; i < n; i++) {
 202                         if (gtt_obj[i]) {
 203                                 if (radeon_bo_is_reserved(gtt_obj[i])) {
 204                                         radeon_bo_unpin(gtt_obj[i]);
 205                                         radeon_bo_unreserve(gtt_obj[i]);
 206                                 }
 207                                 radeon_bo_unref(&gtt_obj[i]);
 208                         }
 209                 }
 210                 kfree(gtt_obj);
 211         }
 212         if (fence) {
 213                 radeon_fence_unref(&fence);
 214         }
 215         if (r) {
 216                 printk(KERN_WARNING "Error while testing BO move.\n");
 217         }
 218 }