1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* Copyright (c) 2023, NVIDIA CORPORATION & AFFILIATES. 3 */ 4 #ifndef __LINUX_IOMMU_PRIV_H 5 #define __LINUX_IOMMU_PRIV_H 6 7 #include <linux/iommu.h> 8 9 static inline const struct iommu_ops *dev_iommu_ops(struct device *dev) 10 { 11 /* 12 * Assume that valid ops must be installed if iommu_probe_device() 13 * has succeeded. The device ops are essentially for internal use 14 * within the IOMMU subsystem itself, so we should be able to trust 15 * ourselves not to misuse the helper. 16 */ 17 return dev->iommu->iommu_dev->ops; 18 } 19 20 int iommu_group_replace_domain(struct iommu_group *group, 21 struct iommu_domain *new_domain); 22 23 int iommu_device_register_bus(struct iommu_device *iommu, 24 const struct iommu_ops *ops, struct bus_type *bus, 25 struct notifier_block *nb); 26 void iommu_device_unregister_bus(struct iommu_device *iommu, 27 struct bus_type *bus, 28 struct notifier_block *nb); 29 30 #endif /* __LINUX_IOMMU_PRIV_H */ 31