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#include <linux/types.h> 28#include <linux/hmm.h> 29#include <linux/rwsem.h> 30#include <linux/workqueue.h> 31#include <linux/interval_tree.h> 32 33#if defined(CONFIG_HMM_MIRROR) 34int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr); 35void amdgpu_mn_unregister(struct amdgpu_bo *bo); 36#else 37static inline int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr) 38{ 39 DRM_WARN_ONCE("HMM_MIRROR kernel config option is not enabled, " 40 "add CONFIG_ZONE_DEVICE=y in config file to fix this\n"); 41 return -ENODEV; 42} 43static inline void amdgpu_mn_unregister(struct amdgpu_bo *bo) {} 44#endif 45 46#endif 47