85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
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/*
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* Copyright 2018-2022 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __KFD_IOMMU_H__
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#define __KFD_IOMMU_H__
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#include <linux/kconfig.h>
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#if IS_REACHABLE(CONFIG_AMD_IOMMU_V2)
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#define KFD_SUPPORT_IOMMU_V2
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int kfd_iommu_check_device(struct kfd_dev *kfd);
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int kfd_iommu_device_init(struct kfd_dev *kfd);
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int kfd_iommu_bind_process_to_device(struct kfd_process_device *pdd);
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void kfd_iommu_unbind_process(struct kfd_process *p);
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void kfd_iommu_suspend(struct kfd_dev *kfd);
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int kfd_iommu_resume(struct kfd_dev *kfd);
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int kfd_iommu_add_perf_counters(struct kfd_topology_device *kdev);
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#else
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static inline int kfd_iommu_check_device(struct kfd_dev *kfd)
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{
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return -ENODEV;
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}
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static inline int kfd_iommu_device_init(struct kfd_dev *kfd)
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{
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#if IS_MODULE(CONFIG_AMD_IOMMU_V2)
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WARN_ONCE(1, "iommu_v2 module is not usable by built-in KFD");
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#endif
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return 0;
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}
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static inline int kfd_iommu_bind_process_to_device(
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struct kfd_process_device *pdd)
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{
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return 0;
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}
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static inline void kfd_iommu_unbind_process(struct kfd_process *p)
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{
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/* empty */
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}
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static inline void kfd_iommu_suspend(struct kfd_dev *kfd)
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{
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/* empty */
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}
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static inline int kfd_iommu_resume(struct kfd_dev *kfd)
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{
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return 0;
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}
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static inline int kfd_iommu_add_perf_counters(struct kfd_topology_device *kdev)
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{
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return 0;
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}
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#endif /* IS_REACHABLE(CONFIG_AMD_IOMMU_V2) */
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#endif /* __KFD_IOMMU_H__ */
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