1 /*
2 * Copyright © 2011-2015 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 <time.h>
40
41 #include "drm.h"
42 #include "ioctl_wrappers.h"
43 #include "drmtest.h"
44 #include "igt_aux.h"
45 #include "igt_stats.h"
46
47 #define OBJECT_SIZE (1<<23)
48
elapsed(const struct timespec * start,const struct timespec * end)49 static uint64_t elapsed(const struct timespec *start,
50 const struct timespec *end)
51 {
52 return 1000000000ULL*(end->tv_sec - start->tv_sec) + (end->tv_nsec - start->tv_nsec);
53 }
54
main(int argc,char ** argv)55 int main(int argc, char **argv)
56 {
57 int fd = drm_open_driver(DRIVER_INTEL);
58 int domain = I915_GEM_DOMAIN_GTT;
59 enum dir { READ, WRITE } dir = READ;
60 void *buf = malloc(OBJECT_SIZE);
61 uint32_t handle;
62 int reps = 13;
63 int c, size;
64
65 while ((c = getopt (argc, argv, "D:d:r:")) != -1) {
66 switch (c) {
67 case 'd':
68 if (strcmp(optarg, "cpu") == 0)
69 domain = I915_GEM_DOMAIN_CPU;
70 else if (strcmp(optarg, "gtt") == 0)
71 domain = I915_GEM_DOMAIN_GTT;
72 break;
73 case 'D':
74 if (strcmp(optarg, "read") == 0)
75 dir = READ;
76 else if (strcmp(optarg, "write") == 0)
77 dir = WRITE;
78 else
79 abort();
80 break;
81
82 case 'r':
83 reps = atoi(optarg);
84 if (reps < 1)
85 reps = 1;
86 break;
87
88 default:
89 break;
90 }
91 }
92
93 handle = gem_create(fd, OBJECT_SIZE);
94 for (size = 1; size <= OBJECT_SIZE; size <<= 1) {
95 igt_stats_t stats;
96 int n;
97
98 igt_stats_init_with_size(&stats, reps);
99
100 for (n = 0; n < reps; n++) {
101 struct timespec start, end;
102
103 gem_set_domain(fd, handle, domain, domain);
104
105 clock_gettime(CLOCK_MONOTONIC, &start);
106 if (dir == READ)
107 gem_read(fd, handle, 0, buf, size);
108 else
109 gem_write(fd, handle, 0, buf, size);
110 clock_gettime(CLOCK_MONOTONIC, &end);
111
112 igt_stats_push(&stats, elapsed(&start, &end));
113 }
114
115 printf("%7.3f\n", igt_stats_get_trimean(&stats)/1000);
116 igt_stats_fini(&stats);
117 }
118
119 return 0;
120 }
121