1/*
2 * Copyright 2016 Advanced Micro Devices, Inc.
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: Christian K├Ânig
23 */
24#ifndef __AMDGPU_SYNC_H__
25#define __AMDGPU_SYNC_H__
26
27#include <linux/hashtable.h>
28
29struct dma_fence;
30struct dma_resv;
31struct amdgpu_device;
32struct amdgpu_ring;
33struct amdgpu_job;
34
35enum amdgpu_sync_mode {
36 AMDGPU_SYNC_ALWAYS,
37 AMDGPU_SYNC_NE_OWNER,
38 AMDGPU_SYNC_EQ_OWNER,
39 AMDGPU_SYNC_EXPLICIT
40};
41
42/*
43 * Container for fences used to sync command submissions.
44 */
45struct amdgpu_sync {
46 DECLARE_HASHTABLE(fences, 4);
47};
48
49void amdgpu_sync_create(struct amdgpu_sync *sync);
50int amdgpu_sync_fence(struct amdgpu_sync *sync, struct dma_fence *f);
51int amdgpu_sync_resv(struct amdgpu_device *adev, struct amdgpu_sync *sync,
52 struct dma_resv *resv, enum amdgpu_sync_mode mode,
53 void *owner);
54struct dma_fence *amdgpu_sync_peek_fence(struct amdgpu_sync *sync,
55 struct amdgpu_ring *ring);
56struct dma_fence *amdgpu_sync_get_fence(struct amdgpu_sync *sync);
57int amdgpu_sync_clone(struct amdgpu_sync *source, struct amdgpu_sync *clone);
58int amdgpu_sync_push_to_job(struct amdgpu_sync *sync, struct amdgpu_job *job);
59int amdgpu_sync_wait(struct amdgpu_sync *sync, bool intr);
60void amdgpu_sync_free(struct amdgpu_sync *sync);
61int amdgpu_sync_init(void);
62void amdgpu_sync_fini(void);
63
64#endif
65

source code of linux/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.h