LXR linux/drivers/gpu/drm/radeon/radeon

   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/radeon_drm.h>
  26#include "radeon_reg.h"
  27#include "radeon.h"
  28
  29#define RADEON_BENCHMARK_COPY_BLIT 1
  30#define RADEON_BENCHMARK_COPY_DMA  0
  31
  32#define RADEON_BENCHMARK_ITERATIONS 1024
  33#define RADEON_BENCHMARK_COMMON_MODES_N 17
  34
  35static int radeon_benchmark_do_move(struct radeon_device *rdev, unsigned size,
  36                                    uint64_t saddr, uint64_t daddr,
  37                                    int flag, int n,
  38                                    struct reservation_object *resv)
  39{
  40        unsigned long start_jiffies;
  41        unsigned long end_jiffies;
  42        struct radeon_fence *fence = NULL;
  43        int i, r;
  44
  45        start_jiffies = jiffies;
  46        for (i = 0; i < n; i++) {
  47                switch (flag) {
  48                case RADEON_BENCHMARK_COPY_DMA:
  49                        fence = radeon_copy_dma(rdev, saddr, daddr,
  50                                                size / RADEON_GPU_PAGE_SIZE,
  51                                                resv);
  52                        break;
  53                case RADEON_BENCHMARK_COPY_BLIT:
  54                        fence = radeon_copy_blit(rdev, saddr, daddr,
  55                                                 size / RADEON_GPU_PAGE_SIZE,
  56                                                 resv);
  57                        break;
  58                default:
  59                        DRM_ERROR("Unknown copy method\n");
  60                        return -EINVAL;
  61                }
  62                if (IS_ERR(fence))
  63                        return PTR_ERR(fence);
  64
  65                r = radeon_fence_wait(fence, false);
  66                radeon_fence_unref(&fence);
  67                if (r)
  68                        return r;
  69        }
  70        end_jiffies = jiffies;
  71        return jiffies_to_msecs(end_jiffies - start_jiffies);
  72}
  73
  74
  75static void radeon_benchmark_log_results(int n, unsigned size,
  76                                         unsigned int time,
  77                                         unsigned sdomain, unsigned ddomain,
  78                                         char *kind)
  79{
  80        unsigned int throughput = (n * (size >> 10)) / time;
  81        DRM_INFO("radeon: %s %u bo moves of %u kB from"
  82                 " %d to %d in %u ms, throughput: %u Mb/s or %u MB/s\n",
  83                 kind, n, size >> 10, sdomain, ddomain, time,
  84                 throughput * 8, throughput);
  85}
  86
  87static void radeon_benchmark_move(struct radeon_device *rdev, unsigned size,
  88                                  unsigned sdomain, unsigned ddomain)
  89{
  90        struct radeon_bo *dobj = NULL;
  91        struct radeon_bo *sobj = NULL;
  92        uint64_t saddr, daddr;
  93        int r, n;
  94        int time;
  95
  96        n = RADEON_BENCHMARK_ITERATIONS;
  97        r = radeon_bo_create(rdev, size, PAGE_SIZE, true, sdomain, 0, NULL, NULL, &sobj);
  98        if (r) {
  99                goto out_cleanup;
 100        }
 101        r = radeon_bo_reserve(sobj, false);
 102        if (unlikely(r != 0))
 103                goto out_cleanup;
 104        r = radeon_bo_pin(sobj, sdomain, &saddr);
 105        radeon_bo_unreserve(sobj);
 106        if (r) {
 107                goto out_cleanup;
 108        }
 109        r = radeon_bo_create(rdev, size, PAGE_SIZE, true, ddomain, 0, NULL, NULL, &dobj);
 110        if (r) {
 111                goto out_cleanup;
 112        }
 113        r = radeon_bo_reserve(dobj, false);
 114        if (unlikely(r != 0))
 115                goto out_cleanup;
 116        r = radeon_bo_pin(dobj, ddomain, &daddr);
 117        radeon_bo_unreserve(dobj);
 118        if (r) {
 119                goto out_cleanup;
 120        }
 121
 122        if (rdev->asic->copy.dma) {
 123                time = radeon_benchmark_do_move(rdev, size, saddr, daddr,
 124                                                RADEON_BENCHMARK_COPY_DMA, n,
 125                                                dobj->tbo.resv);
 126                if (time < 0)
 127                        goto out_cleanup;
 128                if (time > 0)
 129                        radeon_benchmark_log_results(n, size, time,
 130                                                     sdomain, ddomain, "dma");
 131        }
 132
 133        if (rdev->asic->copy.blit) {
 134                time = radeon_benchmark_do_move(rdev, size, saddr, daddr,
 135                                                RADEON_BENCHMARK_COPY_BLIT, n,
 136                                                dobj->tbo.resv);
 137                if (time < 0)
 138                        goto out_cleanup;
 139                if (time > 0)
 140                        radeon_benchmark_log_results(n, size, time,
 141                                                     sdomain, ddomain, "blit");
 142        }
 143
 144out_cleanup:
 145        if (sobj) {
 146                r = radeon_bo_reserve(sobj, false);
 147                if (likely(r == 0)) {
 148                        radeon_bo_unpin(sobj);
 149                        radeon_bo_unreserve(sobj);
 150                }
 151                radeon_bo_unref(&sobj);
 152        }
 153        if (dobj) {
 154                r = radeon_bo_reserve(dobj, false);
 155                if (likely(r == 0)) {
 156                        radeon_bo_unpin(dobj);
 157                        radeon_bo_unreserve(dobj);
 158                }
 159                radeon_bo_unref(&dobj);
 160        }
 161
 162        if (r) {
 163                DRM_ERROR("Error while benchmarking BO move.\n");
 164        }
 165}
 166
 167void radeon_benchmark(struct radeon_device *rdev, int test_number)
 168{
 169        int i;
 170        int common_modes[RADEON_BENCHMARK_COMMON_MODES_N] = {
 171                640 * 480 * 4,
 172                720 * 480 * 4,
 173                800 * 600 * 4,
 174                848 * 480 * 4,
 175                1024 * 768 * 4,
 176                1152 * 768 * 4,
 177                1280 * 720 * 4,
 178                1280 * 800 * 4,
 179                1280 * 854 * 4,
 180                1280 * 960 * 4,
 181                1280 * 1024 * 4,
 182                1440 * 900 * 4,
 183                1400 * 1050 * 4,
 184                1680 * 1050 * 4,
 185                1600 * 1200 * 4,
 186                1920 * 1080 * 4,
 187                1920 * 1200 * 4
 188        };
 189
 190        switch (test_number) {
 191        case 1:
 192                /* simple test, VRAM to GTT and GTT to VRAM */
 193                radeon_benchmark_move(rdev, 1024*1024, RADEON_GEM_DOMAIN_GTT,
 194                                      RADEON_GEM_DOMAIN_VRAM);
 195                radeon_benchmark_move(rdev, 1024*1024, RADEON_GEM_DOMAIN_VRAM,
 196                                      RADEON_GEM_DOMAIN_GTT);
 197                break;
 198        case 2:
 199                /* simple test, VRAM to VRAM */
 200                radeon_benchmark_move(rdev, 1024*1024, RADEON_GEM_DOMAIN_VRAM,
 201                                      RADEON_GEM_DOMAIN_VRAM);
 202                break;
 203        case 3:
 204                /* GTT to VRAM, buffer size sweep, powers of 2 */
 205                for (i = 1; i <= 16384; i <<= 1)
 206                        radeon_benchmark_move(rdev, i * RADEON_GPU_PAGE_SIZE,
 207                                              RADEON_GEM_DOMAIN_GTT,
 208                                              RADEON_GEM_DOMAIN_VRAM);
 209                break;
 210        case 4:
 211                /* VRAM to GTT, buffer size sweep, powers of 2 */
 212                for (i = 1; i <= 16384; i <<= 1)
 213                        radeon_benchmark_move(rdev, i * RADEON_GPU_PAGE_SIZE,
 214                                              RADEON_GEM_DOMAIN_VRAM,
 215                                              RADEON_GEM_DOMAIN_GTT);
 216                break;
 217        case 5:
 218                /* VRAM to VRAM, buffer size sweep, powers of 2 */
 219                for (i = 1; i <= 16384; i <<= 1)
 220                        radeon_benchmark_move(rdev, i * RADEON_GPU_PAGE_SIZE,
 221                                              RADEON_GEM_DOMAIN_VRAM,
 222                                              RADEON_GEM_DOMAIN_VRAM);
 223                break;
 224        case 6:
 225                /* GTT to VRAM, buffer size sweep, common modes */
 226                for (i = 0; i < RADEON_BENCHMARK_COMMON_MODES_N; i++)
 227                        radeon_benchmark_move(rdev, common_modes[i],
 228                                              RADEON_GEM_DOMAIN_GTT,
 229                                              RADEON_GEM_DOMAIN_VRAM);
 230                break;
 231        case 7:
 232                /* VRAM to GTT, buffer size sweep, common modes */
 233                for (i = 0; i < RADEON_BENCHMARK_COMMON_MODES_N; i++)
 234                        radeon_benchmark_move(rdev, common_modes[i],
 235                                              RADEON_GEM_DOMAIN_VRAM,
 236                                              RADEON_GEM_DOMAIN_GTT);
 237                break;
 238        case 8:
 239                /* VRAM to VRAM, buffer size sweep, common modes */
 240                for (i = 0; i < RADEON_BENCHMARK_COMMON_MODES_N; i++)
 241                        radeon_benchmark_move(rdev, common_modes[i],
 242                                              RADEON_GEM_DOMAIN_VRAM,
 243                                              RADEON_GEM_DOMAIN_VRAM);
 244                break;
 245
 246        default:
 247                DRM_ERROR("Unknown benchmark\n");
 248        }
 249}
 250