2 * Copyright 2018 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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
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19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
23 #ifndef __KFD_IOMMU_H__
24 #define __KFD_IOMMU_H__
26 #include <linux/kconfig.h>
28 #if IS_REACHABLE(CONFIG_AMD_IOMMU_V2)
30 #define KFD_SUPPORT_IOMMU_V2
32 int kfd_iommu_check_device(struct kfd_dev *kfd);
33 int kfd_iommu_device_init(struct kfd_dev *kfd);
35 int kfd_iommu_bind_process_to_device(struct kfd_process_device *pdd);
36 void kfd_iommu_unbind_process(struct kfd_process *p);
38 void kfd_iommu_suspend(struct kfd_dev *kfd);
39 int kfd_iommu_resume(struct kfd_dev *kfd);
41 int kfd_iommu_add_perf_counters(struct kfd_topology_device *kdev);
45 static inline int kfd_iommu_check_device(struct kfd_dev *kfd)
49 static inline int kfd_iommu_device_init(struct kfd_dev *kfd)
51 #if IS_MODULE(CONFIG_AMD_IOMMU_V2)
52 WARN_ONCE(1, "iommu_v2 module is not usable by built-in KFD");
57 static inline int kfd_iommu_bind_process_to_device(
58 struct kfd_process_device *pdd)
62 static inline void kfd_iommu_unbind_process(struct kfd_process *p)
67 static inline void kfd_iommu_suspend(struct kfd_dev *kfd)
71 static inline int kfd_iommu_resume(struct kfd_dev *kfd)
76 static inline int kfd_iommu_add_perf_counters(struct kfd_topology_device *kdev)
81 #endif /* IS_REACHABLE(CONFIG_AMD_IOMMU_V2) */
83 #endif /* __KFD_IOMMU_H__ */