LXR linux/drivers/gpu/drm/amd/amdgpu/amdgpu

   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/amdgpu_drm.h>
  26#include "amdgpu.h"
  27#include "amdgpu_uvd.h"
  28#include "amdgpu_vce.h"
  29
  30/* Test BO GTT->VRAM and VRAM->GTT GPU copies across the whole GTT aperture */
  31static void amdgpu_do_test_moves(struct amdgpu_device *adev)
  32{
  33        struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
  34        struct amdgpu_bo *vram_obj = NULL;
  35        struct amdgpu_bo **gtt_obj = NULL;
  36        uint64_t gtt_addr, vram_addr;
  37        unsigned n, size;
  38        int i, 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 = adev->mc.gtt_size - AMDGPU_IB_POOL_SIZE*64*1024;
  46        for (i = 0; i < AMDGPU_MAX_RINGS; ++i)
  47                if (adev->rings[i])
  48                        n -= adev->rings[i]->ring_size;
  49        if (adev->wb.wb_obj)
  50                n -= AMDGPU_GPU_PAGE_SIZE;
  51        if (adev->irq.ih.ring_obj)
  52                n -= adev->irq.ih.ring_size;
  53        n /= size;
  54
  55        gtt_obj = kzalloc(n * sizeof(*gtt_obj), GFP_KERNEL);
  56        if (!gtt_obj) {
  57                DRM_ERROR("Failed to allocate %d pointers\n", n);
  58                r = 1;
  59                goto out_cleanup;
  60        }
  61
  62        r = amdgpu_bo_create(adev, size, PAGE_SIZE, true,
  63                             AMDGPU_GEM_DOMAIN_VRAM, 0,
  64                             NULL, NULL, &vram_obj);
  65        if (r) {
  66                DRM_ERROR("Failed to create VRAM object\n");
  67                goto out_cleanup;
  68        }
  69        r = amdgpu_bo_reserve(vram_obj, false);
  70        if (unlikely(r != 0))
  71                goto out_unref;
  72        r = amdgpu_bo_pin(vram_obj, AMDGPU_GEM_DOMAIN_VRAM, &vram_addr);
  73        if (r) {
  74                DRM_ERROR("Failed to pin VRAM object\n");
  75                goto out_unres;
  76        }
  77        for (i = 0; i < n; i++) {
  78                void *gtt_map, *vram_map;
  79                void **gtt_start, **gtt_end;
  80                void **vram_start, **vram_end;
  81                struct dma_fence *fence = NULL;
  82
  83                r = amdgpu_bo_create(adev, size, PAGE_SIZE, true,
  84                                     AMDGPU_GEM_DOMAIN_GTT, 0, NULL,
  85                                     NULL, gtt_obj + i);
  86                if (r) {
  87                        DRM_ERROR("Failed to create GTT object %d\n", i);
  88                        goto out_lclean;
  89                }
  90
  91                r = amdgpu_bo_reserve(gtt_obj[i], false);
  92                if (unlikely(r != 0))
  93                        goto out_lclean_unref;
  94                r = amdgpu_bo_pin(gtt_obj[i], AMDGPU_GEM_DOMAIN_GTT, &gtt_addr);
  95                if (r) {
  96                        DRM_ERROR("Failed to pin GTT object %d\n", i);
  97                        goto out_lclean_unres;
  98                }
  99
 100                r = amdgpu_bo_kmap(gtt_obj[i], &gtt_map);
 101                if (r) {
 102                        DRM_ERROR("Failed to map GTT object %d\n", i);
 103                        goto out_lclean_unpin;
 104                }
 105
 106                for (gtt_start = gtt_map, gtt_end = gtt_map + size;
 107                     gtt_start < gtt_end;
 108                     gtt_start++)
 109                        *gtt_start = gtt_start;
 110
 111                amdgpu_bo_kunmap(gtt_obj[i]);
 112
 113                r = amdgpu_copy_buffer(ring, gtt_addr, vram_addr,
 114                                       size, NULL, &fence, false);
 115
 116                if (r) {
 117                        DRM_ERROR("Failed GTT->VRAM copy %d\n", i);
 118                        goto out_lclean_unpin;
 119                }
 120
 121                r = dma_fence_wait(fence, false);
 122                if (r) {
 123                        DRM_ERROR("Failed to wait for GTT->VRAM fence %d\n", i);
 124                        goto out_lclean_unpin;
 125                }
 126
 127                dma_fence_put(fence);
 128
 129                r = amdgpu_bo_kmap(vram_obj, &vram_map);
 130                if (r) {
 131                        DRM_ERROR("Failed to map VRAM object after copy %d\n", i);
 132                        goto out_lclean_unpin;
 133                }
 134
 135                for (gtt_start = gtt_map, gtt_end = gtt_map + size,
 136                     vram_start = vram_map, vram_end = vram_map + size;
 137                     vram_start < vram_end;
 138                     gtt_start++, vram_start++) {
 139                        if (*vram_start != gtt_start) {
 140                                DRM_ERROR("Incorrect GTT->VRAM copy %d: Got 0x%p, "
 141                                          "expected 0x%p (GTT/VRAM offset "
 142                                          "0x%16llx/0x%16llx)\n",
 143                                          i, *vram_start, gtt_start,
 144                                          (unsigned long long)
 145                                          (gtt_addr - adev->mc.gtt_start +
 146                                           (void*)gtt_start - gtt_map),
 147                                          (unsigned long long)
 148                                          (vram_addr - adev->mc.vram_start +
 149                                           (void*)gtt_start - gtt_map));
 150                                amdgpu_bo_kunmap(vram_obj);
 151                                goto out_lclean_unpin;
 152                        }
 153                        *vram_start = vram_start;
 154                }
 155
 156                amdgpu_bo_kunmap(vram_obj);
 157
 158                r = amdgpu_copy_buffer(ring, vram_addr, gtt_addr,
 159                                       size, NULL, &fence, false);
 160
 161                if (r) {
 162                        DRM_ERROR("Failed VRAM->GTT copy %d\n", i);
 163                        goto out_lclean_unpin;
 164                }
 165
 166                r = dma_fence_wait(fence, false);
 167                if (r) {
 168                        DRM_ERROR("Failed to wait for VRAM->GTT fence %d\n", i);
 169                        goto out_lclean_unpin;
 170                }
 171
 172                dma_fence_put(fence);
 173
 174                r = amdgpu_bo_kmap(gtt_obj[i], &gtt_map);
 175                if (r) {
 176                        DRM_ERROR("Failed to map GTT object after copy %d\n", i);
 177                        goto out_lclean_unpin;
 178                }
 179
 180                for (gtt_start = gtt_map, gtt_end = gtt_map + size,
 181                     vram_start = vram_map, vram_end = vram_map + size;
 182                     gtt_start < gtt_end;
 183                     gtt_start++, vram_start++) {
 184                        if (*gtt_start != vram_start) {
 185                                DRM_ERROR("Incorrect VRAM->GTT copy %d: Got 0x%p, "
 186                                          "expected 0x%p (VRAM/GTT offset "
 187                                          "0x%16llx/0x%16llx)\n",
 188                                          i, *gtt_start, vram_start,
 189                                          (unsigned long long)
 190                                          (vram_addr - adev->mc.vram_start +
 191                                           (void*)vram_start - vram_map),
 192                                          (unsigned long long)
 193                                          (gtt_addr - adev->mc.gtt_start +
 194                                           (void*)vram_start - vram_map));
 195                                amdgpu_bo_kunmap(gtt_obj[i]);
 196                                goto out_lclean_unpin;
 197                        }
 198                }
 199
 200                amdgpu_bo_kunmap(gtt_obj[i]);
 201
 202                DRM_INFO("Tested GTT->VRAM and VRAM->GTT copy for GTT offset 0x%llx\n",
 203                         gtt_addr - adev->mc.gtt_start);
 204                continue;
 205
 206out_lclean_unpin:
 207                amdgpu_bo_unpin(gtt_obj[i]);
 208out_lclean_unres:
 209                amdgpu_bo_unreserve(gtt_obj[i]);
 210out_lclean_unref:
 211                amdgpu_bo_unref(&gtt_obj[i]);
 212out_lclean:
 213                for (--i; i >= 0; --i) {
 214                        amdgpu_bo_unpin(gtt_obj[i]);
 215                        amdgpu_bo_unreserve(gtt_obj[i]);
 216                        amdgpu_bo_unref(&gtt_obj[i]);
 217                }
 218                if (fence)
 219                        dma_fence_put(fence);
 220                break;
 221        }
 222
 223        amdgpu_bo_unpin(vram_obj);
 224out_unres:
 225        amdgpu_bo_unreserve(vram_obj);
 226out_unref:
 227        amdgpu_bo_unref(&vram_obj);
 228out_cleanup:
 229        kfree(gtt_obj);
 230        if (r) {
 231                pr_warn("Error while testing BO move\n");
 232        }
 233}
 234
 235void amdgpu_test_moves(struct amdgpu_device *adev)
 236{
 237        if (adev->mman.buffer_funcs)
 238                amdgpu_do_test_moves(adev);
 239}
 240