LXR linux/drivers/gpu/drm/radeon/radeon

   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 */
  31void 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, PAGE_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, PAGE_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
 192out_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}
 219