1*b843c749SSergey Zigachev /*
2*b843c749SSergey Zigachev * Copyright 2017 Advanced Micro Devices, Inc.
3*b843c749SSergey Zigachev *
4*b843c749SSergey Zigachev * Permission is hereby granted, free of charge, to any person obtaining a
5*b843c749SSergey Zigachev * copy of this software and associated documentation files (the "Software"),
6*b843c749SSergey Zigachev * to deal in the Software without restriction, including without limitation
7*b843c749SSergey Zigachev * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8*b843c749SSergey Zigachev * and/or sell copies of the Software, and to permit persons to whom the
9*b843c749SSergey Zigachev * Software is furnished to do so, subject to the following conditions:
10*b843c749SSergey Zigachev *
11*b843c749SSergey Zigachev * The above copyright notice and this permission notice shall be included in
12*b843c749SSergey Zigachev * all copies or substantial portions of the Software.
13*b843c749SSergey Zigachev *
14*b843c749SSergey Zigachev * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15*b843c749SSergey Zigachev * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16*b843c749SSergey Zigachev * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17*b843c749SSergey Zigachev * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18*b843c749SSergey Zigachev * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19*b843c749SSergey Zigachev * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20*b843c749SSergey Zigachev * OTHER DEALINGS IN THE SOFTWARE.
21*b843c749SSergey Zigachev *
22*b843c749SSergey Zigachev * Authors: Christian König
23*b843c749SSergey Zigachev */
24*b843c749SSergey Zigachev #ifndef __AMDGPU_MN_H__
25*b843c749SSergey Zigachev #define __AMDGPU_MN_H__
26*b843c749SSergey Zigachev
27*b843c749SSergey Zigachev /*
28*b843c749SSergey Zigachev * MMU Notifier
29*b843c749SSergey Zigachev */
30*b843c749SSergey Zigachev struct amdgpu_mn;
31*b843c749SSergey Zigachev
32*b843c749SSergey Zigachev enum amdgpu_mn_type {
33*b843c749SSergey Zigachev AMDGPU_MN_TYPE_GFX,
34*b843c749SSergey Zigachev AMDGPU_MN_TYPE_HSA,
35*b843c749SSergey Zigachev };
36*b843c749SSergey Zigachev
37*b843c749SSergey Zigachev #if defined(CONFIG_MMU_NOTIFIER)
38*b843c749SSergey Zigachev void amdgpu_mn_lock(struct amdgpu_mn *mn);
39*b843c749SSergey Zigachev void amdgpu_mn_unlock(struct amdgpu_mn *mn);
40*b843c749SSergey Zigachev struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev,
41*b843c749SSergey Zigachev enum amdgpu_mn_type type);
42*b843c749SSergey Zigachev int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr);
43*b843c749SSergey Zigachev void amdgpu_mn_unregister(struct amdgpu_bo *bo);
44*b843c749SSergey Zigachev #else
amdgpu_mn_lock(struct amdgpu_mn * mn)45*b843c749SSergey Zigachev static inline void amdgpu_mn_lock(struct amdgpu_mn *mn) {}
amdgpu_mn_unlock(struct amdgpu_mn * mn)46*b843c749SSergey Zigachev static inline void amdgpu_mn_unlock(struct amdgpu_mn *mn) {}
amdgpu_mn_get(struct amdgpu_device * adev,enum amdgpu_mn_type type)47*b843c749SSergey Zigachev static inline struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev,
48*b843c749SSergey Zigachev enum amdgpu_mn_type type)
49*b843c749SSergey Zigachev {
50*b843c749SSergey Zigachev return NULL;
51*b843c749SSergey Zigachev }
amdgpu_mn_register(struct amdgpu_bo * bo,unsigned long addr)52*b843c749SSergey Zigachev static inline int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr)
53*b843c749SSergey Zigachev {
54*b843c749SSergey Zigachev return -ENODEV;
55*b843c749SSergey Zigachev }
amdgpu_mn_unregister(struct amdgpu_bo * bo)56*b843c749SSergey Zigachev static inline void amdgpu_mn_unregister(struct amdgpu_bo *bo) {}
57*b843c749SSergey Zigachev #endif
58*b843c749SSergey Zigachev
59*b843c749SSergey Zigachev #endif
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