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 König
23 */
24#ifndef __AMDGPU_MN_H__
25#define __AMDGPU_MN_H__
26
27/*
28 * MMU Notifier
29 */
30struct amdgpu_mn;
31
32#if defined(CONFIG_MMU_NOTIFIER)
33void amdgpu_mn_lock(struct amdgpu_mn *mn);
34void amdgpu_mn_unlock(struct amdgpu_mn *mn);
35struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev);
36int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr);
37void amdgpu_mn_unregister(struct amdgpu_bo *bo);
38#else
39static inline void amdgpu_mn_lock(struct amdgpu_mn *mn) {}
40static inline void amdgpu_mn_unlock(struct amdgpu_mn *mn) {}
41static inline struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev)
42{
43	return NULL;
44}
45static inline int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr)
46{
47	return -ENODEV;
48}
49static inline void amdgpu_mn_unregister(struct amdgpu_bo *bo) {}
50#endif
51
52#endif