amdgpu_eviction_fence.h

 1/* SPDX-License-Identifier: MIT */
 2/*
 3 * Copyright 2023 Advanced Micro Devices, Inc.
 4 *
 5 * Permission is hereby granted, free of charge, to any person obtaining a
 6 * copy of this software and associated documentation files (the "Software"),
 7 * to deal in the Software without restriction, including without limitation
 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
22 *
23 */
24
25#ifndef AMDGPU_EV_FENCE_H_
26#define AMDGPU_EV_FENCE_H_
27
28struct amdgpu_eviction_fence {
29	struct dma_fence base;
30	spinlock_t	 lock;
31	char		 timeline_name[TASK_COMM_LEN];
32	struct amdgpu_eviction_fence_mgr *evf_mgr;
33};
34
35struct amdgpu_eviction_fence_mgr {
36	u64			ev_fence_ctx;
37	atomic_t		ev_fence_seq;
38	spinlock_t		ev_fence_lock;
39	struct amdgpu_eviction_fence *ev_fence;
40	struct delayed_work	suspend_work;
41	uint8_t fd_closing;
42};
43
44/* Eviction fence helper functions */
45struct amdgpu_eviction_fence *
46amdgpu_eviction_fence_create(struct amdgpu_eviction_fence_mgr *evf_mgr);
47
48void
49amdgpu_eviction_fence_destroy(struct amdgpu_eviction_fence_mgr *evf_mgr);
50
51int
52amdgpu_eviction_fence_attach(struct amdgpu_eviction_fence_mgr *evf_mgr,
53			     struct amdgpu_bo *bo);
54
55void
56amdgpu_eviction_fence_detach(struct amdgpu_eviction_fence_mgr *evf_mgr,
57			     struct amdgpu_bo *bo);
58
59int
60amdgpu_eviction_fence_init(struct amdgpu_eviction_fence_mgr *evf_mgr);
61
62void
63amdgpu_eviction_fence_signal(struct amdgpu_eviction_fence_mgr *evf_mgr,
64			     struct amdgpu_eviction_fence *ev_fence);
65
66int
67amdgpu_eviction_fence_replace_fence(struct amdgpu_eviction_fence_mgr *evf_mgr,
68				    struct drm_exec *exec);
69#endif