drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c

   1 /*
   2  * Copyright 2009 Jerome Glisse.
   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: Jerome Glisse
  23  */
  24 #include <drm/drmP.h>
  25 #include <drm/amdgpu_drm.h>
  26 #include "amdgpu.h"
  27
  28 #define AMDGPU_BENCHMARK_ITERATIONS 1024
  29 #define AMDGPU_BENCHMARK_COMMON_MODES_N 17
  30
  31 static int amdgpu_benchmark_do_move(struct amdgpu_device *adev, unsigned size,
  32                                     uint64_t saddr, uint64_t daddr, int n)
  33 {
  34         unsigned long start_jiffies;
  35         unsigned long end_jiffies;
  36         struct dma_fence *fence = NULL;
  37         int i, r;
  38
  39         start_jiffies = jiffies;
  40         for (i = 0; i < n; i++) {
  41                 struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
  42                 r = amdgpu_copy_buffer(ring, saddr, daddr, size, NULL, &fence,
  43                                        false, false);
  44                 if (r)
  45                         goto exit_do_move;
  46                 r = dma_fence_wait(fence, false);
  47                 if (r)
  48                         goto exit_do_move;
  49                 dma_fence_put(fence);
  50         }
  51         end_jiffies = jiffies;
  52         r = jiffies_to_msecs(end_jiffies - start_jiffies);
  53
  54 exit_do_move:
  55         if (fence)
  56                 dma_fence_put(fence);
  57         return r;
  58 }
  59
  60
  61 static void amdgpu_benchmark_log_results(int n, unsigned size,
  62                                          unsigned int time,
  63                                          unsigned sdomain, unsigned ddomain,
  64                                          char *kind)
  65 {
  66         unsigned int throughput = (n * (size >> 10)) / time;
  67         DRM_INFO("amdgpu: %s %u bo moves of %u kB from"
  68                  " %d to %d in %u ms, throughput: %u Mb/s or %u MB/s\n",
  69                  kind, n, size >> 10, sdomain, ddomain, time,
  70                  throughput * 8, throughput);
  71 }
  72
  73 static void amdgpu_benchmark_move(struct amdgpu_device *adev, unsigned size,
  74                                   unsigned sdomain, unsigned ddomain)
  75 {
  76         struct amdgpu_bo *dobj = NULL;
  77         struct amdgpu_bo *sobj = NULL;
  78         struct amdgpu_bo_param bp;
  79         uint64_t saddr, daddr;
  80         int r, n;
  81         int time;
  82
  83         memset(&bp, 0, sizeof(bp));
  84         bp.size = size;
  85         bp.byte_align = PAGE_SIZE;
  86         bp.domain = sdomain;
  87         bp.flags = 0;
  88         bp.type = ttm_bo_type_kernel;
  89         bp.resv = NULL;
  90         n = AMDGPU_BENCHMARK_ITERATIONS;
  91         r = amdgpu_bo_create(adev, &bp, &sobj);
  92         if (r) {
  93                 goto out_cleanup;
  94         }
  95         r = amdgpu_bo_reserve(sobj, false);
  96         if (unlikely(r != 0))
  97                 goto out_cleanup;
  98         r = amdgpu_bo_pin(sobj, sdomain);
  99         if (r) {
 100                 amdgpu_bo_unreserve(sobj);
 101                 goto out_cleanup;
 102         }
 103         r = amdgpu_ttm_alloc_gart(&sobj->tbo);
 104         amdgpu_bo_unreserve(sobj);
 105         if (r) {
 106                 goto out_cleanup;
 107         }
 108         saddr = amdgpu_bo_gpu_offset(sobj);
 109         bp.domain = ddomain;
 110         r = amdgpu_bo_create(adev, &bp, &dobj);
 111         if (r) {
 112                 goto out_cleanup;
 113         }
 114         r = amdgpu_bo_reserve(dobj, false);
 115         if (unlikely(r != 0))
 116                 goto out_cleanup;
 117         r = amdgpu_bo_pin(dobj, ddomain);
 118         if (r) {
 119                 amdgpu_bo_unreserve(sobj);
 120                 goto out_cleanup;
 121         }
 122         r = amdgpu_ttm_alloc_gart(&dobj->tbo);
 123         amdgpu_bo_unreserve(dobj);
 124         if (r) {
 125                 goto out_cleanup;
 126         }
 127         daddr = amdgpu_bo_gpu_offset(dobj);
 128
 129         if (adev->mman.buffer_funcs) {
 130                 time = amdgpu_benchmark_do_move(adev, size, saddr, daddr, n);
 131                 if (time < 0)
 132                         goto out_cleanup;
 133                 if (time > 0)
 134                         amdgpu_benchmark_log_results(n, size, time,
 135                                                      sdomain, ddomain, "dma");
 136         }
 137
 138 out_cleanup:
 139         /* Check error value now. The value can be overwritten when clean up.*/
 140         if (r) {
 141                 DRM_ERROR("Error while benchmarking BO move.\n");
 142         }
 143
 144         if (sobj) {
 145                 r = amdgpu_bo_reserve(sobj, true);
 146                 if (likely(r == 0)) {
 147                         amdgpu_bo_unpin(sobj);
 148                         amdgpu_bo_unreserve(sobj);
 149                 }
 150                 amdgpu_bo_unref(&sobj);
 151         }
 152         if (dobj) {
 153                 r = amdgpu_bo_reserve(dobj, true);
 154                 if (likely(r == 0)) {
 155                         amdgpu_bo_unpin(dobj);
 156                         amdgpu_bo_unreserve(dobj);
 157                 }
 158                 amdgpu_bo_unref(&dobj);
 159         }
 160 }
 161
 162 void amdgpu_benchmark(struct amdgpu_device *adev, int test_number)
 163 {
 164         int i;
 165         static const int common_modes[AMDGPU_BENCHMARK_COMMON_MODES_N] = {
 166                 640 * 480 * 4,
 167                 720 * 480 * 4,
 168                 800 * 600 * 4,
 169                 848 * 480 * 4,
 170                 1024 * 768 * 4,
 171                 1152 * 768 * 4,
 172                 1280 * 720 * 4,
 173                 1280 * 800 * 4,
 174                 1280 * 854 * 4,
 175                 1280 * 960 * 4,
 176                 1280 * 1024 * 4,
 177                 1440 * 900 * 4,
 178                 1400 * 1050 * 4,
 179                 1680 * 1050 * 4,
 180                 1600 * 1200 * 4,
 181                 1920 * 1080 * 4,
 182                 1920 * 1200 * 4
 183         };
 184
 185         switch (test_number) {
 186         case 1:
 187                 /* simple test, VRAM to GTT and GTT to VRAM */
 188                 amdgpu_benchmark_move(adev, 1024*1024, AMDGPU_GEM_DOMAIN_GTT,
 189                                       AMDGPU_GEM_DOMAIN_VRAM);
 190                 amdgpu_benchmark_move(adev, 1024*1024, AMDGPU_GEM_DOMAIN_VRAM,
 191                                       AMDGPU_GEM_DOMAIN_GTT);
 192                 break;
 193         case 2:
 194                 /* simple test, VRAM to VRAM */
 195                 amdgpu_benchmark_move(adev, 1024*1024, AMDGPU_GEM_DOMAIN_VRAM,
 196                                       AMDGPU_GEM_DOMAIN_VRAM);
 197                 break;
 198         case 3:
 199                 /* GTT to VRAM, buffer size sweep, powers of 2 */
 200                 for (i = 1; i <= 16384; i <<= 1)
 201                         amdgpu_benchmark_move(adev, i * AMDGPU_GPU_PAGE_SIZE,
 202                                               AMDGPU_GEM_DOMAIN_GTT,
 203                                               AMDGPU_GEM_DOMAIN_VRAM);
 204                 break;
 205         case 4:
 206                 /* VRAM to GTT, buffer size sweep, powers of 2 */
 207                 for (i = 1; i <= 16384; i <<= 1)
 208                         amdgpu_benchmark_move(adev, i * AMDGPU_GPU_PAGE_SIZE,
 209                                               AMDGPU_GEM_DOMAIN_VRAM,
 210                                               AMDGPU_GEM_DOMAIN_GTT);
 211                 break;
 212         case 5:
 213                 /* VRAM to VRAM, buffer size sweep, powers of 2 */
 214                 for (i = 1; i <= 16384; i <<= 1)
 215                         amdgpu_benchmark_move(adev, i * AMDGPU_GPU_PAGE_SIZE,
 216                                               AMDGPU_GEM_DOMAIN_VRAM,
 217                                               AMDGPU_GEM_DOMAIN_VRAM);
 218                 break;
 219         case 6:
 220                 /* GTT to VRAM, buffer size sweep, common modes */
 221                 for (i = 0; i < AMDGPU_BENCHMARK_COMMON_MODES_N; i++)
 222                         amdgpu_benchmark_move(adev, common_modes[i],
 223                                               AMDGPU_GEM_DOMAIN_GTT,
 224                                               AMDGPU_GEM_DOMAIN_VRAM);
 225                 break;
 226         case 7:
 227                 /* VRAM to GTT, buffer size sweep, common modes */
 228                 for (i = 0; i < AMDGPU_BENCHMARK_COMMON_MODES_N; i++)
 229                         amdgpu_benchmark_move(adev, common_modes[i],
 230                                               AMDGPU_GEM_DOMAIN_VRAM,
 231                                               AMDGPU_GEM_DOMAIN_GTT);
 232                 break;
 233         case 8:
 234                 /* VRAM to VRAM, buffer size sweep, common modes */
 235                 for (i = 0; i < AMDGPU_BENCHMARK_COMMON_MODES_N; i++)
 236                         amdgpu_benchmark_move(adev, common_modes[i],
 237                                               AMDGPU_GEM_DOMAIN_VRAM,
 238                                               AMDGPU_GEM_DOMAIN_VRAM);
 239                 break;
 240
 241         default:
 242                 DRM_ERROR("Unknown benchmark\n");
 243         }
 244 }