/* * Copyright 2017 Advanced Micro Devices, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: Christian König */#ifndef __AMDGPU_MN_H__#define __AMDGPU_MN_H__ #include <linux/types.h>#include <linux/hmm.h>#include <linux/rwsem.h>#include <linux/workqueue.h>#include <linux/interval_tree.h>#include <linux/mmu_notifier.h> struct amdgpu_hmm_range {	struct hmm_range hmm_range;	struct amdgpu_bo *bo;}; int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier,			       uint64_t start, uint64_t npages, bool readonly,			       void *owner,			       struct amdgpu_hmm_range *range); #if defined(CONFIG_HMM_MIRROR)bool amdgpu_hmm_range_valid(struct amdgpu_hmm_range *range);struct amdgpu_hmm_range *amdgpu_hmm_range_alloc(struct amdgpu_bo *bo);void amdgpu_hmm_range_free(struct amdgpu_hmm_range *range);int amdgpu_hmm_register(struct amdgpu_bo *bo, unsigned long addr);void amdgpu_hmm_unregister(struct amdgpu_bo *bo);#elsestatic inline int amdgpu_hmm_register(struct amdgpu_bo *bo, unsigned long addr){	DRM_WARN_ONCE("HMM_MIRROR kernel config option is not enabled, "		      "add CONFIG_ZONE_DEVICE=y in config file to fix this\n");	return -ENODEV;} static inline void amdgpu_hmm_unregister(struct amdgpu_bo *bo) {} static inline bool amdgpu_hmm_range_valid(struct amdgpu_hmm_range *range){	return false;} static inline struct amdgpu_hmm_range *amdgpu_hmm_range_alloc(struct amdgpu_bo *bo){	return NULL;} static inline void amdgpu_hmm_range_free(struct amdgpu_hmm_range *range) {}#endif #endif