drivers/gpu/drm/radeon/radeon_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/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
  34 static int radeon_benchmark_do_move(struct radeon_device *rdev, unsigned size,
  35                                     uint64_t saddr, uint64_t daddr,
  36                                     int flag, int n)
  37 {
  38         unsigned long start_jiffies;
  39         unsigned long end_jiffies;
  40         struct radeon_fence *fence = NULL;
  41         int i, r;
  42
  43         start_jiffies = jiffies;
  44         for (i = 0; i < n; i++) {
  45                 r = radeon_fence_create(rdev, &fence);
  46                 if (r)
  47                         return r;
  48
  49                 switch (flag) {
  50                 case RADEON_BENCHMARK_COPY_DMA:
  51                         r = radeon_copy_dma(rdev, saddr, daddr,
  52                                             size / RADEON_GPU_PAGE_SIZE,
  53                                             fence);
  54                         break;
  55                 case RADEON_BENCHMARK_COPY_BLIT:
  56                         r = radeon_copy_blit(rdev, saddr, daddr,
  57                                              size / RADEON_GPU_PAGE_SIZE,
  58                                              fence);
  59                         break;
  60                 default:
  61                         DRM_ERROR("Unknown copy method\n");
  62                         r = -EINVAL;
  63                 }
  64                 if (r)
  65                         goto exit_do_move;
  66                 r = radeon_fence_wait(fence, false);
  67                 if (r)
  68                         goto exit_do_move;
  69                 radeon_fence_unref(&fence);
  70         }
  71         end_jiffies = jiffies;
  72         r = jiffies_to_msecs(end_jiffies - start_jiffies);
  73
  74 exit_do_move:
  75         if (fence)
  76                 radeon_fence_unref(&fence);
  77         return r;
  78 }
  79
  80
  81 static void radeon_benchmark_log_results(int n, unsigned size,
  82                                          unsigned int time,
  83                                          unsigned sdomain, unsigned ddomain,
  84                                          char *kind)
  85 {
  86         unsigned int throughput = (n * (size >> 10)) / time;
  87         DRM_INFO("radeon: %s %u bo moves of %u kB from"
  88                  " %d to %d in %u ms, throughput: %u Mb/s or %u MB/s\n",
  89                  kind, n, size >> 10, sdomain, ddomain, time,
  90                  throughput * 8, throughput);
  91 }
  92
  93 static void radeon_benchmark_move(struct radeon_device *rdev, unsigned size,
  94                                   unsigned sdomain, unsigned ddomain)
  95 {
  96         struct radeon_bo *dobj = NULL;
  97         struct radeon_bo *sobj = NULL;
  98         uint64_t saddr, daddr;
  99         int r, n;
 100         unsigned int time;
 101
 102         n = RADEON_BENCHMARK_ITERATIONS;
 103         r = radeon_bo_create(rdev, size, PAGE_SIZE, true, sdomain, &sobj);
 104         if (r) {
 105                 goto out_cleanup;
 106         }
 107         r = radeon_bo_reserve(sobj, false);
 108         if (unlikely(r != 0))
 109                 goto out_cleanup;
 110         r = radeon_bo_pin(sobj, sdomain, &saddr);
 111         radeon_bo_unreserve(sobj);
 112         if (r) {
 113                 goto out_cleanup;
 114         }
 115         r = radeon_bo_create(rdev, size, PAGE_SIZE, true, ddomain, &dobj);
 116         if (r) {
 117                 goto out_cleanup;
 118         }
 119         r = radeon_bo_reserve(dobj, false);
 120         if (unlikely(r != 0))
 121                 goto out_cleanup;
 122         r = radeon_bo_pin(dobj, ddomain, &daddr);
 123         radeon_bo_unreserve(dobj);
 124         if (r) {
 125                 goto out_cleanup;
 126         }
 127
 128         /* r100 doesn't have dma engine so skip the test */
 129         if (rdev->asic->copy_dma) {
 130                 time = radeon_benchmark_do_move(rdev, size, saddr, daddr,
 131                                                 RADEON_BENCHMARK_COPY_DMA, n);
 132                 if (time < 0)
 133                         goto out_cleanup;
 134                 if (time > 0)
 135                         radeon_benchmark_log_results(n, size, time,
 136                                                      sdomain, ddomain, "dma");
 137         }
 138
 139         time = radeon_benchmark_do_move(rdev, size, saddr, daddr,
 140                                         RADEON_BENCHMARK_COPY_BLIT, n);
 141         if (time < 0)
 142                 goto out_cleanup;
 143         if (time > 0)
 144                 radeon_benchmark_log_results(n, size, time,
 145                                              sdomain, ddomain, "blit");
 146
 147 out_cleanup:
 148         if (sobj) {
 149                 r = radeon_bo_reserve(sobj, false);
 150                 if (likely(r == 0)) {
 151                         radeon_bo_unpin(sobj);
 152                         radeon_bo_unreserve(sobj);
 153                 }
 154                 radeon_bo_unref(&sobj);
 155         }
 156         if (dobj) {
 157                 r = radeon_bo_reserve(dobj, false);
 158                 if (likely(r == 0)) {
 159                         radeon_bo_unpin(dobj);
 160                         radeon_bo_unreserve(dobj);
 161                 }
 162                 radeon_bo_unref(&dobj);
 163         }
 164
 165         if (r) {
 166                 DRM_ERROR("Error while benchmarking BO move.\n");
 167         }
 168 }
 169
 170 void radeon_benchmark(struct radeon_device *rdev)
 171 {
 172         radeon_benchmark_move(rdev, 1024*1024, RADEON_GEM_DOMAIN_GTT,
 173                               RADEON_GEM_DOMAIN_VRAM);
 174         radeon_benchmark_move(rdev, 1024*1024, RADEON_GEM_DOMAIN_VRAM,
 175                               RADEON_GEM_DOMAIN_GTT);
 176 }