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

   1// SPDX-License-Identifier: GPL-2.0 OR MIT
   2/*
   3 * Copyright 2009 VMware, Inc.
   4 *
   5 * Permission is hereby granted, free of charge, to any person obtaining a
   6 * copy of this software and associated documentation files (the "Software"),
   7 * to deal in the Software without restriction, including without limitation
   8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9 * and/or sell copies of the Software, and to permit persons to whom the
  10 * Software is furnished to do so, subject to the following conditions:
  11 *
  12 * The above copyright notice and this permission notice shall be included in
  13 * all copies or substantial portions of the Software.
  14 *
  15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  21 * OTHER DEALINGS IN THE SOFTWARE.
  22 *
  23 * Authors: Michel Dänzer
  24 */
  25
  26#include <drm/amdgpu_drm.h>
  27#include "amdgpu.h"
  28#include "amdgpu_uvd.h"
  29#include "amdgpu_vce.h"
  30
  31/* Test BO GTT->VRAM and VRAM->GTT GPU copies across the whole GTT aperture */
  32static void amdgpu_do_test_moves(struct amdgpu_device *adev)
  33{
  34        struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
  35        struct amdgpu_bo *vram_obj = NULL;
  36        struct amdgpu_bo **gtt_obj = NULL;
  37        struct amdgpu_bo_param bp;
  38        uint64_t gart_addr, vram_addr;
  39        unsigned n, size;
  40        int i, r;
  41
  42        size = 1024 * 1024;
  43
  44        /* Number of tests =
  45         * (Total GTT - gart_pin_size - (2 transfer windows for buffer moves)) / test size
  46         */
  47        n = adev->gmc.gart_size - atomic64_read(&adev->gart_pin_size);
  48        n -= AMDGPU_GTT_MAX_TRANSFER_SIZE * AMDGPU_GTT_NUM_TRANSFER_WINDOWS *
  49                AMDGPU_GPU_PAGE_SIZE;
  50        n /= size;
  51
  52        gtt_obj = kcalloc(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        memset(&bp, 0, sizeof(bp));
  59        bp.size = size;
  60        bp.byte_align = PAGE_SIZE;
  61        bp.domain = AMDGPU_GEM_DOMAIN_VRAM;
  62        bp.flags = 0;
  63        bp.type = ttm_bo_type_kernel;
  64        bp.resv = NULL;
  65        bp.bo_ptr_size = sizeof(struct amdgpu_bo);
  66
  67        r = amdgpu_bo_create(adev, &bp, &vram_obj);
  68        if (r) {
  69                DRM_ERROR("Failed to create VRAM object\n");
  70                goto out_cleanup;
  71        }
  72        r = amdgpu_bo_reserve(vram_obj, false);
  73        if (unlikely(r != 0))
  74                goto out_unref;
  75        r = amdgpu_bo_pin(vram_obj, AMDGPU_GEM_DOMAIN_VRAM);
  76        if (r) {
  77                DRM_ERROR("Failed to pin VRAM object\n");
  78                goto out_unres;
  79        }
  80        vram_addr = amdgpu_bo_gpu_offset(vram_obj);
  81        for (i = 0; i < n; i++) {
  82                void *gtt_map, *vram_map;
  83                void **gart_start, **gart_end;
  84                void **vram_start, **vram_end;
  85                struct dma_fence *fence = NULL;
  86
  87                bp.domain = AMDGPU_GEM_DOMAIN_GTT;
  88                r = amdgpu_bo_create(adev, &bp, gtt_obj + i);
  89                if (r) {
  90                        DRM_ERROR("Failed to create GTT object %d\n", i);
  91                        goto out_lclean;
  92                }
  93
  94                r = amdgpu_bo_reserve(gtt_obj[i], false);
  95                if (unlikely(r != 0))
  96                        goto out_lclean_unref;
  97                r = amdgpu_bo_pin(gtt_obj[i], AMDGPU_GEM_DOMAIN_GTT);
  98                if (r) {
  99                        DRM_ERROR("Failed to pin GTT object %d\n", i);
 100                        goto out_lclean_unres;
 101                }
 102                r = amdgpu_ttm_alloc_gart(&gtt_obj[i]->tbo);
 103                if (r) {
 104                        DRM_ERROR("%p bind failed\n", gtt_obj[i]);
 105                        goto out_lclean_unpin;
 106                }
 107                gart_addr = amdgpu_bo_gpu_offset(gtt_obj[i]);
 108
 109                r = amdgpu_bo_kmap(gtt_obj[i], &gtt_map);
 110                if (r) {
 111                        DRM_ERROR("Failed to map GTT object %d\n", i);
 112                        goto out_lclean_unpin;
 113                }
 114
 115                for (gart_start = gtt_map, gart_end = gtt_map + size;
 116                     gart_start < gart_end;
 117                     gart_start++)
 118                        *gart_start = gart_start;
 119
 120                amdgpu_bo_kunmap(gtt_obj[i]);
 121
 122                r = amdgpu_copy_buffer(ring, gart_addr, vram_addr,
 123                                       size, NULL, &fence, false, false, false);
 124
 125                if (r) {
 126                        DRM_ERROR("Failed GTT->VRAM copy %d\n", i);
 127                        goto out_lclean_unpin;
 128                }
 129
 130                r = dma_fence_wait(fence, false);
 131                if (r) {
 132                        DRM_ERROR("Failed to wait for GTT->VRAM fence %d\n", i);
 133                        goto out_lclean_unpin;
 134                }
 135
 136                dma_fence_put(fence);
 137                fence = NULL;
 138
 139                r = amdgpu_bo_kmap(vram_obj, &vram_map);
 140                if (r) {
 141                        DRM_ERROR("Failed to map VRAM object after copy %d\n", i);
 142                        goto out_lclean_unpin;
 143                }
 144
 145                for (gart_start = gtt_map, gart_end = gtt_map + size,
 146                     vram_start = vram_map, vram_end = vram_map + size;
 147                     vram_start < vram_end;
 148                     gart_start++, vram_start++) {
 149                        if (*vram_start != gart_start) {
 150                                DRM_ERROR("Incorrect GTT->VRAM copy %d: Got 0x%p, "
 151                                          "expected 0x%p (GTT/VRAM offset "
 152                                          "0x%16llx/0x%16llx)\n",
 153                                          i, *vram_start, gart_start,
 154                                          (unsigned long long)
 155                                          (gart_addr - adev->gmc.gart_start +
 156                                           (void *)gart_start - gtt_map),
 157                                          (unsigned long long)
 158                                          (vram_addr - adev->gmc.vram_start +
 159                                           (void *)gart_start - gtt_map));
 160                                amdgpu_bo_kunmap(vram_obj);
 161                                goto out_lclean_unpin;
 162                        }
 163                        *vram_start = vram_start;
 164                }
 165
 166                amdgpu_bo_kunmap(vram_obj);
 167
 168                r = amdgpu_copy_buffer(ring, vram_addr, gart_addr,
 169                                       size, NULL, &fence, false, false, false);
 170
 171                if (r) {
 172                        DRM_ERROR("Failed VRAM->GTT copy %d\n", i);
 173                        goto out_lclean_unpin;
 174                }
 175
 176                r = dma_fence_wait(fence, false);
 177                if (r) {
 178                        DRM_ERROR("Failed to wait for VRAM->GTT fence %d\n", i);
 179                        goto out_lclean_unpin;
 180                }
 181
 182                dma_fence_put(fence);
 183                fence = NULL;
 184
 185                r = amdgpu_bo_kmap(gtt_obj[i], &gtt_map);
 186                if (r) {
 187                        DRM_ERROR("Failed to map GTT object after copy %d\n", i);
 188                        goto out_lclean_unpin;
 189                }
 190
 191                for (gart_start = gtt_map, gart_end = gtt_map + size,
 192                     vram_start = vram_map, vram_end = vram_map + size;
 193                     gart_start < gart_end;
 194                     gart_start++, vram_start++) {
 195                        if (*gart_start != vram_start) {
 196                                DRM_ERROR("Incorrect VRAM->GTT copy %d: Got 0x%p, "
 197                                          "expected 0x%p (VRAM/GTT offset "
 198                                          "0x%16llx/0x%16llx)\n",
 199                                          i, *gart_start, vram_start,
 200                                          (unsigned long long)
 201                                          (vram_addr - adev->gmc.vram_start +
 202                                           (void *)vram_start - vram_map),
 203                                          (unsigned long long)
 204                                          (gart_addr - adev->gmc.gart_start +
 205                                           (void *)vram_start - vram_map));
 206                                amdgpu_bo_kunmap(gtt_obj[i]);
 207                                goto out_lclean_unpin;
 208                        }
 209                }
 210
 211                amdgpu_bo_kunmap(gtt_obj[i]);
 212
 213                DRM_INFO("Tested GTT->VRAM and VRAM->GTT copy for GTT offset 0x%llx\n",
 214                         gart_addr - adev->gmc.gart_start);
 215                continue;
 216
 217out_lclean_unpin:
 218                amdgpu_bo_unpin(gtt_obj[i]);
 219out_lclean_unres:
 220                amdgpu_bo_unreserve(gtt_obj[i]);
 221out_lclean_unref:
 222                amdgpu_bo_unref(&gtt_obj[i]);
 223out_lclean:
 224                for (--i; i >= 0; --i) {
 225                        amdgpu_bo_unpin(gtt_obj[i]);
 226                        amdgpu_bo_unreserve(gtt_obj[i]);
 227                        amdgpu_bo_unref(&gtt_obj[i]);
 228                }
 229                if (fence)
 230                        dma_fence_put(fence);
 231                break;
 232        }
 233
 234        amdgpu_bo_unpin(vram_obj);
 235out_unres:
 236        amdgpu_bo_unreserve(vram_obj);
 237out_unref:
 238        amdgpu_bo_unref(&vram_obj);
 239out_cleanup:
 240        kfree(gtt_obj);
 241        if (r) {
 242                pr_warn("Error while testing BO move\n");
 243        }
 244}
 245
 246void amdgpu_test_moves(struct amdgpu_device *adev)
 247{
 248        if (adev->mman.buffer_funcs)
 249                amdgpu_do_test_moves(adev);
 250}
 251