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