1 /* $NetBSD: amdgpu_mn.h,v 1.2 2021/12/18 23:44:58 riastradh Exp $ */
2
3 /*
4 * Copyright 2017 Advanced Micro Devices, Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Christian König
25 */
26 #ifndef __AMDGPU_MN_H__
27 #define __AMDGPU_MN_H__
28
29 #include <linux/types.h>
30 #include <linux/hmm.h>
31 #include <linux/rwsem.h>
32 #include <linux/workqueue.h>
33 #include <linux/interval_tree.h>
34
35 #if defined(CONFIG_HMM_MIRROR)
36 int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr);
37 void amdgpu_mn_unregister(struct amdgpu_bo *bo);
38 #else
amdgpu_mn_register(struct amdgpu_bo * bo,unsigned long addr)39 static inline int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr)
40 {
41 DRM_WARN_ONCE("HMM_MIRROR kernel config option is not enabled, "
42 "add CONFIG_ZONE_DEVICE=y in config file to fix this\n");
43 return -ENODEV;
44 }
amdgpu_mn_unregister(struct amdgpu_bo * bo)45 static inline void amdgpu_mn_unregister(struct amdgpu_bo *bo) {}
46 #endif
47
48 #endif
49