1/*
2 * Copyright 2018 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
23#ifndef __KFD_IOMMU_H__
24#define __KFD_IOMMU_H__
25
26#if defined(CONFIG_AMD_IOMMU_V2_MODULE) || defined(CONFIG_AMD_IOMMU_V2)
27
28#define KFD_SUPPORT_IOMMU_V2
29
30int kfd_iommu_check_device(struct kfd_dev *kfd);
31int kfd_iommu_device_init(struct kfd_dev *kfd);
32
33int kfd_iommu_bind_process_to_device(struct kfd_process_device *pdd);
34void kfd_iommu_unbind_process(struct kfd_process *p);
35
36void kfd_iommu_suspend(struct kfd_dev *kfd);
37int kfd_iommu_resume(struct kfd_dev *kfd);
38
39int kfd_iommu_add_perf_counters(struct kfd_topology_device *kdev);
40
41#else
42
43static inline int kfd_iommu_check_device(struct kfd_dev *kfd)
44{
45 return -ENODEV;
46}
47static inline int kfd_iommu_device_init(struct kfd_dev *kfd)
48{
49 return 0;
50}
51
52static inline int kfd_iommu_bind_process_to_device(
53 struct kfd_process_device *pdd)
54{
55 return 0;
56}
57static inline void kfd_iommu_unbind_process(struct kfd_process *p)
58{
59 /* empty */
60}
61
62static inline void kfd_iommu_suspend(struct kfd_dev *kfd)
63{
64 /* empty */
65}
66static inline int kfd_iommu_resume(struct kfd_dev *kfd)
67{
68 return 0;
69}
70
71static inline int kfd_iommu_add_perf_counters(struct kfd_topology_device *kdev)
72{
73 return 0;
74}
75
76#endif /* defined(CONFIG_AMD_IOMMU_V2) */
77
78#endif /* __KFD_IOMMU_H__ */
79