1 /* SPDX-License-Identifier: GPL-2.0 OR MIT */
2 /*
3 * Copyright 2020-2021 Advanced Micro Devices, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
22 *
23 */
24
25 #ifndef KFD_MIGRATE_H_
26 #define KFD_MIGRATE_H_
27
28 #if IS_ENABLED(CONFIG_HSA_AMD_SVM)
29
30 #include <linux/rwsem.h>
31 #include <linux/list.h>
32 #include <linux/mutex.h>
33 #include <linux/sched/mm.h>
34 #include <linux/hmm.h>
35 #include "kfd_priv.h"
36 #include "kfd_svm.h"
37
38 enum MIGRATION_COPY_DIR {
39 FROM_RAM_TO_VRAM = 0,
40 FROM_VRAM_TO_RAM
41 };
42
43 int svm_migrate_to_vram(struct svm_range *prange, uint32_t best_loc,
44 struct mm_struct *mm, uint32_t trigger);
45 int svm_migrate_vram_to_ram(struct svm_range *prange, struct mm_struct *mm,
46 uint32_t trigger, struct page *fault_page);
47 unsigned long
48 svm_migrate_addr_to_pfn(struct amdgpu_device *adev, unsigned long addr);
49
50 int svm_migrate_init(struct amdgpu_device *adev);
51
52 #else
53
svm_migrate_init(struct amdgpu_device * adev)54 static inline int svm_migrate_init(struct amdgpu_device *adev)
55 {
56 return 0;
57 }
58
59 #endif /* IS_ENABLED(CONFIG_HSA_AMD_SVM) */
60
61 #endif /* KFD_MIGRATE_H_ */
62