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         uint64_t saddr, daddr;
  79         int r, n;
  80         int time;
  81
  82         n = AMDGPU_BENCHMARK_ITERATIONS;
  83         r = amdgpu_bo_create(adev, size, PAGE_SIZE,sdomain, 0,
  84                              ttm_bo_type_kernel, NULL, &sobj);
  85         if (r) {
  86                 goto out_cleanup;
  87         }
  88         r = amdgpu_bo_reserve(sobj, false);
  89         if (unlikely(r != 0))
  90                 goto out_cleanup;
  91         r = amdgpu_bo_pin(sobj, sdomain, &saddr);
  92         amdgpu_bo_unreserve(sobj);
  93         if (r) {
  94                 goto out_cleanup;
  95         }
  96         r = amdgpu_bo_create(adev, size, PAGE_SIZE, ddomain, 0,
  97                              ttm_bo_type_kernel, NULL, &dobj);
  98         if (r) {
  99                 goto out_cleanup;
 100         }
 101         r = amdgpu_bo_reserve(dobj, false);
 102         if (unlikely(r != 0))
 103                 goto out_cleanup;
 104         r = amdgpu_bo_pin(dobj, ddomain, &daddr);
 105         amdgpu_bo_unreserve(dobj);
 106         if (r) {
 107                 goto out_cleanup;
 108         }
 109
 110         if (adev->mman.buffer_funcs) {
 111                 time = amdgpu_benchmark_do_move(adev, size, saddr, daddr, n);
 112                 if (time < 0)
 113                         goto out_cleanup;
 114                 if (time > 0)
 115                         amdgpu_benchmark_log_results(n, size, time,
 116                                                      sdomain, ddomain, "dma");
 117         }
 118
 119 out_cleanup:
 120         /* Check error value now. The value can be overwritten when clean up.*/
 121         if (r) {
 122                 DRM_ERROR("Error while benchmarking BO move.\n");
 123         }
 124
 125         if (sobj) {
 126                 r = amdgpu_bo_reserve(sobj, true);
 127                 if (likely(r == 0)) {
 128                         amdgpu_bo_unpin(sobj);
 129                         amdgpu_bo_unreserve(sobj);
 130                 }
 131                 amdgpu_bo_unref(&sobj);
 132         }
 133         if (dobj) {
 134                 r = amdgpu_bo_reserve(dobj, true);
 135                 if (likely(r == 0)) {
 136                         amdgpu_bo_unpin(dobj);
 137                         amdgpu_bo_unreserve(dobj);
 138                 }
 139                 amdgpu_bo_unref(&dobj);
 140         }
 141 }
 142
 143 void amdgpu_benchmark(struct amdgpu_device *adev, int test_number)
 144 {
 145         int i;
 146         static const int common_modes[AMDGPU_BENCHMARK_COMMON_MODES_N] = {
 147                 640 * 480 * 4,
 148                 720 * 480 * 4,
 149                 800 * 600 * 4,
 150                 848 * 480 * 4,
 151                 1024 * 768 * 4,
 152                 1152 * 768 * 4,
 153                 1280 * 720 * 4,
 154                 1280 * 800 * 4,
 155                 1280 * 854 * 4,
 156                 1280 * 960 * 4,
 157                 1280 * 1024 * 4,
 158                 1440 * 900 * 4,
 159                 1400 * 1050 * 4,
 160                 1680 * 1050 * 4,
 161                 1600 * 1200 * 4,
 162                 1920 * 1080 * 4,
 163                 1920 * 1200 * 4
 164         };
 165
 166         switch (test_number) {
 167         case 1:
 168                 /* simple test, VRAM to GTT and GTT to VRAM */
 169                 amdgpu_benchmark_move(adev, 1024*1024, AMDGPU_GEM_DOMAIN_GTT,
 170                                       AMDGPU_GEM_DOMAIN_VRAM);
 171                 amdgpu_benchmark_move(adev, 1024*1024, AMDGPU_GEM_DOMAIN_VRAM,
 172                                       AMDGPU_GEM_DOMAIN_GTT);
 173                 break;
 174         case 2:
 175                 /* simple test, VRAM to VRAM */
 176                 amdgpu_benchmark_move(adev, 1024*1024, AMDGPU_GEM_DOMAIN_VRAM,
 177                                       AMDGPU_GEM_DOMAIN_VRAM);
 178                 break;
 179         case 3:
 180                 /* GTT to VRAM, buffer size sweep, powers of 2 */
 181                 for (i = 1; i <= 16384; i <<= 1)
 182                         amdgpu_benchmark_move(adev, i * AMDGPU_GPU_PAGE_SIZE,
 183                                               AMDGPU_GEM_DOMAIN_GTT,
 184                                               AMDGPU_GEM_DOMAIN_VRAM);
 185                 break;
 186         case 4:
 187                 /* VRAM to GTT, buffer size sweep, powers of 2 */
 188                 for (i = 1; i <= 16384; i <<= 1)
 189                         amdgpu_benchmark_move(adev, i * AMDGPU_GPU_PAGE_SIZE,
 190                                               AMDGPU_GEM_DOMAIN_VRAM,
 191                                               AMDGPU_GEM_DOMAIN_GTT);
 192                 break;
 193         case 5:
 194                 /* VRAM to VRAM, buffer size sweep, powers of 2 */
 195                 for (i = 1; i <= 16384; i <<= 1)
 196                         amdgpu_benchmark_move(adev, i * AMDGPU_GPU_PAGE_SIZE,
 197                                               AMDGPU_GEM_DOMAIN_VRAM,
 198                                               AMDGPU_GEM_DOMAIN_VRAM);
 199                 break;
 200         case 6:
 201                 /* GTT to VRAM, buffer size sweep, common modes */
 202                 for (i = 0; i < AMDGPU_BENCHMARK_COMMON_MODES_N; i++)
 203                         amdgpu_benchmark_move(adev, common_modes[i],
 204                                               AMDGPU_GEM_DOMAIN_GTT,
 205                                               AMDGPU_GEM_DOMAIN_VRAM);
 206                 break;
 207         case 7:
 208                 /* VRAM to GTT, buffer size sweep, common modes */
 209                 for (i = 0; i < AMDGPU_BENCHMARK_COMMON_MODES_N; i++)
 210                         amdgpu_benchmark_move(adev, common_modes[i],
 211                                               AMDGPU_GEM_DOMAIN_VRAM,
 212                                               AMDGPU_GEM_DOMAIN_GTT);
 213                 break;
 214         case 8:
 215                 /* VRAM to VRAM, buffer size sweep, common modes */
 216                 for (i = 0; i < AMDGPU_BENCHMARK_COMMON_MODES_N; i++)
 217                         amdgpu_benchmark_move(adev, common_modes[i],
 218                                               AMDGPU_GEM_DOMAIN_VRAM,
 219                                               AMDGPU_GEM_DOMAIN_VRAM);
 220                 break;
 221
 222         default:
 223                 DRM_ERROR("Unknown benchmark\n");
 224         }
 225 }