1/*
2 * Copyright 2017 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_MN_H__
25#define __AMDGPU_MN_H__
26
27/*
28 * MMU Notifier
29 */
30struct amdgpu_mn;
31
32enum amdgpu_mn_type {
33 AMDGPU_MN_TYPE_GFX,
34 AMDGPU_MN_TYPE_HSA,
35};
36
37#if defined(CONFIG_MMU_NOTIFIER)
38void amdgpu_mn_lock(struct amdgpu_mn *mn);
39void amdgpu_mn_unlock(struct amdgpu_mn *mn);
40struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev,
41 enum amdgpu_mn_type type);
42int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr);
43void amdgpu_mn_unregister(struct amdgpu_bo *bo);
44#else
45static inline void amdgpu_mn_lock(struct amdgpu_mn *mn) {}
46static inline void amdgpu_mn_unlock(struct amdgpu_mn *mn) {}
47static inline struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev,
48 enum amdgpu_mn_type type)
49{
50 return NULL;
51}
52static inline int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr)
53{
54 return -ENODEV;
55}
56static inline void amdgpu_mn_unregister(struct amdgpu_bo *bo) {}
57#endif
58
59#endif
60