1 /*
2 * Copyright © 2020 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 shall be included
12 * in all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20 * DEALINGS IN THE SOFTWARE.
21 */
22
23 #include "gen_gem.h"
24 #include "drm-uapi/i915_drm.h"
25
26 bool
gen_gem_supports_syncobj_wait(int fd)27 gen_gem_supports_syncobj_wait(int fd)
28 {
29 int ret;
30
31 struct drm_syncobj_create create = {
32 .flags = 0,
33 };
34 ret = gen_ioctl(fd, DRM_IOCTL_SYNCOBJ_CREATE, &create);
35 if (ret)
36 return false;
37
38 uint32_t syncobj = create.handle;
39
40 struct drm_syncobj_wait wait = {
41 .handles = (uint64_t)(uintptr_t)&create,
42 .count_handles = 1,
43 .timeout_nsec = 0,
44 .flags = DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT,
45 };
46 ret = gen_ioctl(fd, DRM_IOCTL_SYNCOBJ_WAIT, &wait);
47
48 struct drm_syncobj_destroy destroy = {
49 .handle = syncobj,
50 };
51 gen_ioctl(fd, DRM_IOCTL_SYNCOBJ_DESTROY, &destroy);
52
53 /* If it timed out, then we have the ioctl and it supports the
54 * DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT flag.
55 */
56 return ret == -1 && errno == ETIME;
57 }
58