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 K├Ânig
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
33int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier,
34 struct mm_struct *mm, struct page **pages,
35 uint64_t start, uint64_t npages,
36 struct hmm_range **phmm_range, bool readonly,
37 bool mmap_locked, void *owner);
38int amdgpu_hmm_range_get_pages_done(struct hmm_range *hmm_range);
39
40#if defined(CONFIG_HMM_MIRROR)
41int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr);
42void amdgpu_mn_unregister(struct amdgpu_bo *bo);
43#else
44static inline int amdgpu_mn_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_mn_unregister(struct amdgpu_bo *bo) {}
51#endif
52
53#endif
54

source code of linux/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h