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1/*2 * Copyright 2017 Advanced Micro Devices, Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Christian König23 */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#include <linux/mmu_notifier.h>33 34int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier,35 uint64_t start, uint64_t npages, bool readonly,36 void *owner, struct page **pages,37 struct hmm_range **phmm_range);38bool amdgpu_hmm_range_get_pages_done(struct hmm_range *hmm_range);39 40#if defined(CONFIG_HMM_MIRROR)41int amdgpu_hmm_register(struct amdgpu_bo *bo, unsigned long addr);42void amdgpu_hmm_unregister(struct amdgpu_bo *bo);43#else44static inline int amdgpu_hmm_register(struct amdgpu_bo *bo, unsigned long addr)45{46 DRM_WARN_ONCE("HMM_MIRROR kernel config option is not enabled, "47 "add CONFIG_ZONE_DEVICE=y in config file to fix this\n");48 return -ENODEV;49}50static inline void amdgpu_hmm_unregister(struct amdgpu_bo *bo) {}51#endif52 53#endif54