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

   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
  31static 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);
  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
  54exit_do_move:
  55        if (fence)
  56                dma_fence_put(fence);
  57        return r;
  58}
  59
  60
  61static 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
  73static 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, true, sdomain, 0, NULL,
  84                             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, true, ddomain, 0, NULL,
  97                             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
 119out_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
 143void 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}
 226