tests/gem_pwrite.c

   1 /*
   2  * Copyright © 2011 Intel Corporation
   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 (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Chris Wilson <chris@chris-wilson.co.uk>
  25  *
  26  */
  27
  28 #include <unistd.h>
  29 #include <stdlib.h>
  30 #include <stdint.h>
  31 #include <stdio.h>
  32 #include <string.h>
  33 #include <fcntl.h>
  34 #include <inttypes.h>
  35 #include <errno.h>
  36 #include <sys/stat.h>
  37 #include <sys/ioctl.h>
  38 #include <sys/time.h>
  39 #include "drm.h"
  40 #include "ioctl_wrappers.h"
  41 #include "drmtest.h"
  42
  43 #define OBJECT_SIZE 16384
  44
  45 #define COPY_BLT_CMD            (2<<29|0x53<<22|0x6)
  46 #define BLT_WRITE_ALPHA         (1<<21)
  47 #define BLT_WRITE_RGB           (1<<20)
  48 #define BLT_SRC_TILED           (1<<15)
  49 #define BLT_DST_TILED           (1<<11)
  50
  51 static void do_gem_write(int fd, uint32_t handle, void *buf, int len, int loops)
  52 {
  53         while (loops--)
  54                 gem_write(fd, handle, 0, buf, len);
  55 }
  56
  57 static double elapsed(const struct timeval *start,
  58                       const struct timeval *end,
  59                       int loop)
  60 {
  61         return (1e6*(end->tv_sec - start->tv_sec) + (end->tv_usec - start->tv_usec))/loop;
  62 }
  63
  64 static const char *bytes_per_sec(char *buf, double v)
  65 {
  66         const char *order[] = {
  67                 "",
  68                 "KiB",
  69                 "MiB",
  70                 "GiB",
  71                 "TiB",
  72                 NULL,
  73         }, **o = order;
  74
  75         while (v > 1000 && o[1]) {
  76                 v /= 1000;
  77                 o++;
  78         }
  79         sprintf(buf, "%.1f%s/s", v, *o);
  80         return buf;
  81 }
  82
  83
  84 uint32_t *src, dst;
  85 int fd;
  86
  87 int main(int argc, char **argv)
  88 {
  89         int object_size = 0;
  90         uint32_t buf[20];
  91         int count;
  92         const struct {
  93                 int level;
  94                 const char *name;
  95         } cache[] = {
  96                 { 0, "uncached" },
  97                 { 1, "snoop" },
  98                 { 2, "display" },
  99                 { -1 },
 100         }, *c;
 101
 102         igt_skip_on_simulation();
 103
 104         igt_subtest_init(argc, argv);
 105
 106         if (argc > 1 && atoi(argv[1]))
 107                 object_size = atoi(argv[1]);
 108         if (object_size == 0)
 109                 object_size = OBJECT_SIZE;
 110         object_size = (object_size + 3) & -4;
 111
 112         igt_fixture {
 113                 fd = drm_open_any();
 114
 115                 dst = gem_create(fd, object_size);
 116                 src = malloc(object_size);
 117         }
 118
 119         igt_subtest("normal") {
 120                 for (count = 1; count <= 1<<17; count <<= 1) {
 121                         struct timeval start, end;
 122
 123                         gettimeofday(&start, NULL);
 124                         do_gem_write(fd, dst, src, object_size, count);
 125                         gettimeofday(&end, NULL);
 126                         igt_info("Time to pwrite %d bytes x %6d:        %7.3fµs, %s\n",
 127                                  object_size, count,
 128                                  elapsed(&start, &end, count),
 129                                  bytes_per_sec((char *)buf, object_size/elapsed(&start, &end, count)*1e6));
 130                         fflush(stdout);
 131                 }
 132         }
 133
 134         for (c = cache; c->level != -1; c++) {
 135                 igt_subtest(c->name) {
 136                         gem_set_caching(fd, dst, c->level);
 137
 138                         for (count = 1; count <= 1<<17; count <<= 1) {
 139                                 struct timeval start, end;
 140
 141                                 gettimeofday(&start, NULL);
 142                                 do_gem_write(fd, dst, src, object_size, count);
 143                                 gettimeofday(&end, NULL);
 144                                 igt_info("Time to %s pwrite %d bytes x %6d:     %7.3fµs, %s\n",
 145                                          c->name, object_size, count,
 146                                          elapsed(&start, &end, count),
 147                                          bytes_per_sec((char *)buf, object_size/elapsed(&start, &end, count)*1e6));
 148                                 fflush(stdout);
 149                         }
 150                 }
 151         }
 152
 153         igt_fixture {
 154                 free(src);
 155                 gem_close(fd, dst);
 156
 157                 close(fd);
 158         }
 159
 160         igt_exit();
 161 }