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{
  39        unsigned long start_jiffies;
  40        unsigned long end_jiffies;
  41        struct radeon_fence *fence = NULL;
  42        int i, r;
  43
  44        start_jiffies = jiffies;
  45        for (i = 0; i < n; i++) {
  46                switch (flag) {
  47                case RADEON_BENCHMARK_COPY_DMA:
  48                        r = radeon_copy_dma(rdev, saddr, daddr,
  49                                            size / RADEON_GPU_PAGE_SIZE,
  50                                            &fence);
  51                        break;
  52                case RADEON_BENCHMARK_COPY_BLIT:
  53                        r = radeon_copy_blit(rdev, saddr, daddr,
  54                                             size / RADEON_GPU_PAGE_SIZE,
  55                                             &fence);
  56                        break;
  57                default:
  58                        DRM_ERROR("Unknown copy method\n");
  59                        r = -EINVAL;
  60                }
  61                if (r)
  62                        goto exit_do_move;
  63                r = radeon_fence_wait(fence, false);
  64                if (r)
  65                        goto exit_do_move;
  66                radeon_fence_unref(&fence);
  67        }
  68        end_jiffies = jiffies;
  69        r = jiffies_to_msecs(end_jiffies - start_jiffies);
  70
  71exit_do_move:
  72        if (fence)
  73                radeon_fence_unref(&fence);
  74        return r;
  75}
  76
  77
  78static void radeon_benchmark_log_results(int n, unsigned size,
  79                                         unsigned int time,
  80                                         unsigned sdomain, unsigned ddomain,
  81                                         char *kind)
  82{
  83        unsigned int throughput = (n * (size >> 10)) / time;
  84        DRM_INFO("radeon: %s %u bo moves of %u kB from"
  85                 " %d to %d in %u ms, throughput: %u Mb/s or %u MB/s\n",
  86                 kind, n, size >> 10, sdomain, ddomain, time,
  87                 throughput * 8, throughput);
  88}
  89
  90static void radeon_benchmark_move(struct radeon_device *rdev, unsigned size,
  91                                  unsigned sdomain, unsigned ddomain)
  92{
  93        struct radeon_bo *dobj = NULL;
  94        struct radeon_bo *sobj = NULL;
  95        uint64_t saddr, daddr;
  96        int r, n;
  97        int time;
  98
  99        n = RADEON_BENCHMARK_ITERATIONS;
 100        r = radeon_bo_create(rdev, size, PAGE_SIZE, true, sdomain, NULL, &sobj);
 101        if (r) {
 102                goto out_cleanup;
 103        }
 104        r = radeon_bo_reserve(sobj, false);
 105        if (unlikely(r != 0))
 106                goto out_cleanup;
 107        r = radeon_bo_pin(sobj, sdomain, &saddr);
 108        radeon_bo_unreserve(sobj);
 109        if (r) {
 110                goto out_cleanup;
 111        }
 112        r = radeon_bo_create(rdev, size, PAGE_SIZE, true, ddomain, NULL, &dobj);
 113        if (r) {
 114                goto out_cleanup;
 115        }
 116        r = radeon_bo_reserve(dobj, false);
 117        if (unlikely(r != 0))
 118                goto out_cleanup;
 119        r = radeon_bo_pin(dobj, ddomain, &daddr);
 120        radeon_bo_unreserve(dobj);
 121        if (r) {
 122                goto out_cleanup;
 123        }
 124
 125        if (rdev->asic->copy.dma) {
 126                time = radeon_benchmark_do_move(rdev, size, saddr, daddr,
 127                                                RADEON_BENCHMARK_COPY_DMA, n);
 128                if (time < 0)
 129                        goto out_cleanup;
 130                if (time > 0)
 131                        radeon_benchmark_log_results(n, size, time,
 132                                                     sdomain, ddomain, "dma");
 133        }
 134
 135        if (rdev->asic->copy.blit) {
 136                time = radeon_benchmark_do_move(rdev, size, saddr, daddr,
 137                                                RADEON_BENCHMARK_COPY_BLIT, n);
 138                if (time < 0)
 139                        goto out_cleanup;
 140                if (time > 0)
 141                        radeon_benchmark_log_results(n, size, time,
 142                                                     sdomain, ddomain, "blit");
 143        }
 144
 145out_cleanup:
 146        if (sobj) {
 147                r = radeon_bo_reserve(sobj, false);
 148                if (likely(r == 0)) {
 149                        radeon_bo_unpin(sobj);
 150                        radeon_bo_unreserve(sobj);
 151                }
 152                radeon_bo_unref(&sobj);
 153        }
 154        if (dobj) {
 155                r = radeon_bo_reserve(dobj, false);
 156                if (likely(r == 0)) {
 157                        radeon_bo_unpin(dobj);
 158                        radeon_bo_unreserve(dobj);
 159                }
 160                radeon_bo_unref(&dobj);
 161        }
 162
 163        if (r) {
 164                DRM_ERROR("Error while benchmarking BO move.\n");
 165        }
 166}
 167
 168void radeon_benchmark(struct radeon_device *rdev, int test_number)
 169{
 170        int i;
 171        int common_modes[RADEON_BENCHMARK_COMMON_MODES_N] = {
 172                640 * 480 * 4,
 173                720 * 480 * 4,
 174                800 * 600 * 4,
 175                848 * 480 * 4,
 176                1024 * 768 * 4,
 177                1152 * 768 * 4,
 178                1280 * 720 * 4,
 179                1280 * 800 * 4,
 180                1280 * 854 * 4,
 181                1280 * 960 * 4,
 182                1280 * 1024 * 4,
 183                1440 * 900 * 4,
 184                1400 * 1050 * 4,
 185                1680 * 1050 * 4,
 186                1600 * 1200 * 4,
 187                1920 * 1080 * 4,
 188                1920 * 1200 * 4
 189        };
 190
 191        switch (test_number) {
 192        case 1:
 193                /* simple test, VRAM to GTT and GTT to VRAM */
 194                radeon_benchmark_move(rdev, 1024*1024, RADEON_GEM_DOMAIN_GTT,
 195                                      RADEON_GEM_DOMAIN_VRAM);
 196                radeon_benchmark_move(rdev, 1024*1024, RADEON_GEM_DOMAIN_VRAM,
 197                                      RADEON_GEM_DOMAIN_GTT);
 198                break;
 199        case 2:
 200                /* simple test, VRAM to VRAM */
 201                radeon_benchmark_move(rdev, 1024*1024, RADEON_GEM_DOMAIN_VRAM,
 202                                      RADEON_GEM_DOMAIN_VRAM);
 203                break;
 204        case 3:
 205                /* GTT to VRAM, buffer size sweep, powers of 2 */
 206                for (i = 1; i <= 16384; i <<= 1)
 207                        radeon_benchmark_move(rdev, i * RADEON_GPU_PAGE_SIZE,
 208                                              RADEON_GEM_DOMAIN_GTT,
 209                                              RADEON_GEM_DOMAIN_VRAM);
 210                break;
 211        case 4:
 212                /* VRAM to GTT, buffer size sweep, powers of 2 */
 213                for (i = 1; i <= 16384; i <<= 1)
 214                        radeon_benchmark_move(rdev, i * RADEON_GPU_PAGE_SIZE,
 215                                              RADEON_GEM_DOMAIN_VRAM,
 216                                              RADEON_GEM_DOMAIN_GTT);
 217                break;
 218        case 5:
 219                /* VRAM to VRAM, buffer size sweep, powers of 2 */
 220                for (i = 1; i <= 16384; i <<= 1)
 221                        radeon_benchmark_move(rdev, i * RADEON_GPU_PAGE_SIZE,
 222                                              RADEON_GEM_DOMAIN_VRAM,
 223                                              RADEON_GEM_DOMAIN_VRAM);
 224                break;
 225        case 6:
 226                /* GTT to VRAM, buffer size sweep, common modes */
 227                for (i = 0; i < RADEON_BENCHMARK_COMMON_MODES_N; i++)
 228                        radeon_benchmark_move(rdev, common_modes[i],
 229                                              RADEON_GEM_DOMAIN_GTT,
 230                                              RADEON_GEM_DOMAIN_VRAM);
 231                break;
 232        case 7:
 233                /* VRAM to GTT, buffer size sweep, common modes */
 234                for (i = 0; i < RADEON_BENCHMARK_COMMON_MODES_N; i++)
 235                        radeon_benchmark_move(rdev, common_modes[i],
 236                                              RADEON_GEM_DOMAIN_VRAM,
 237                                              RADEON_GEM_DOMAIN_GTT);
 238                break;
 239        case 8:
 240                /* VRAM to VRAM, buffer size sweep, common modes */
 241                for (i = 0; i < RADEON_BENCHMARK_COMMON_MODES_N; i++)
 242                        radeon_benchmark_move(rdev, common_modes[i],
 243                                              RADEON_GEM_DOMAIN_VRAM,
 244                                              RADEON_GEM_DOMAIN_VRAM);
 245                break;
 246
 247        default:
 248                DRM_ERROR("Unknown benchmark\n");
 249        }
 250}
 251