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
30 int kfd_iommu_check_device(struct kfd_dev *kfd);
31 int kfd_iommu_device_init(struct kfd_dev *kfd);
32
33 int kfd_iommu_bind_process_to_device(struct kfd_process_device *pdd);
34 void kfd_iommu_unbind_process(struct kfd_process *p);
35
36 void kfd_iommu_suspend(struct kfd_dev *kfd);
37 int kfd_iommu_resume(struct kfd_dev *kfd);
38
39 int kfd_iommu_add_perf_counters(struct kfd_topology_device *kdev);
40
41 #else
42
kfd_iommu_check_device(struct kfd_dev * kfd)43 static inline int kfd_iommu_check_device(struct kfd_dev *kfd)
44 {
45 return -ENODEV;
46 }
kfd_iommu_device_init(struct kfd_dev * kfd)47 static inline int kfd_iommu_device_init(struct kfd_dev *kfd)
48 {
49 return 0;
50 }
51
kfd_iommu_bind_process_to_device(struct kfd_process_device * pdd)52 static inline int kfd_iommu_bind_process_to_device(
53 struct kfd_process_device *pdd)
54 {
55 return 0;
56 }
kfd_iommu_unbind_process(struct kfd_process * p)57 static inline void kfd_iommu_unbind_process(struct kfd_process *p)
58 {
59 /* empty */
60 }
61
kfd_iommu_suspend(struct kfd_dev * kfd)62 static inline void kfd_iommu_suspend(struct kfd_dev *kfd)
63 {
64 /* empty */
65 }
kfd_iommu_resume(struct kfd_dev * kfd)66 static inline int kfd_iommu_resume(struct kfd_dev *kfd)
67 {
68 return 0;
69 }
70
kfd_iommu_add_perf_counters(struct kfd_topology_device * kdev)71 static 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
