| /* |
| * Copyright © 2011-2015 Intel Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| * |
| * Authors: |
| * Chris Wilson <chris@chris-wilson.co.uk> |
| * |
| */ |
| |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <fcntl.h> |
| #include <inttypes.h> |
| #include <errno.h> |
| #include <sys/stat.h> |
| #include <sys/ioctl.h> |
| #include <sys/time.h> |
| #include <time.h> |
| |
| #include "drm.h" |
| #include "drmtest.h" |
| #include "i915/gem_create.h" |
| #include "igt_aux.h" |
| #include "igt_stats.h" |
| #include "ioctl_wrappers.h" |
| |
| #define OBJECT_SIZE (1<<23) |
| |
| static uint64_t elapsed(const struct timespec *start, |
| const struct timespec *end) |
| { |
| return 1000000000ULL*(end->tv_sec - start->tv_sec) + (end->tv_nsec - start->tv_nsec); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| int fd = drm_open_driver(DRIVER_INTEL); |
| int domain = I915_GEM_DOMAIN_GTT; |
| enum dir { READ, WRITE } dir = READ; |
| void *buf = malloc(OBJECT_SIZE); |
| uint32_t handle; |
| int reps = 13; |
| int c, size; |
| |
| while ((c = getopt (argc, argv, "D:d:r:")) != -1) { |
| switch (c) { |
| case 'd': |
| if (strcmp(optarg, "cpu") == 0) |
| domain = I915_GEM_DOMAIN_CPU; |
| else if (strcmp(optarg, "gtt") == 0) |
| domain = I915_GEM_DOMAIN_GTT; |
| break; |
| case 'D': |
| if (strcmp(optarg, "read") == 0) |
| dir = READ; |
| else if (strcmp(optarg, "write") == 0) |
| dir = WRITE; |
| else |
| abort(); |
| break; |
| |
| case 'r': |
| reps = atoi(optarg); |
| if (reps < 1) |
| reps = 1; |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| handle = gem_create(fd, OBJECT_SIZE); |
| for (size = 1; size <= OBJECT_SIZE; size <<= 1) { |
| igt_stats_t stats; |
| int n; |
| |
| igt_stats_init_with_size(&stats, reps); |
| |
| for (n = 0; n < reps; n++) { |
| struct timespec start, end; |
| |
| gem_set_domain(fd, handle, domain, domain); |
| |
| clock_gettime(CLOCK_MONOTONIC, &start); |
| if (dir == READ) |
| gem_read(fd, handle, 0, buf, size); |
| else |
| gem_write(fd, handle, 0, buf, size); |
| clock_gettime(CLOCK_MONOTONIC, &end); |
| |
| igt_stats_push(&stats, elapsed(&start, &end)); |
| } |
| |
| printf("%7.3f\n", igt_stats_get_trimean(&stats)/1000); |
| igt_stats_fini(&stats); |
| } |
| |
| return 0; |
| } |