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