diff options
Diffstat (limited to 'drivers/iommu/iommu-priv.h')
| -rw-r--r-- | drivers/iommu/iommu-priv.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/iommu/iommu-priv.h b/drivers/iommu/iommu-priv.h new file mode 100644 index 000000000000..2024a2313348 --- /dev/null +++ b/drivers/iommu/iommu-priv.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* Copyright (c) 2023, NVIDIA CORPORATION & AFFILIATES. + */ +#ifndef __LINUX_IOMMU_PRIV_H +#define __LINUX_IOMMU_PRIV_H + +#include <linux/iommu.h> + +static inline const struct iommu_ops *dev_iommu_ops(struct device *dev) +{ + /* + * Assume that valid ops must be installed if iommu_probe_device() + * has succeeded. The device ops are essentially for internal use + * within the IOMMU subsystem itself, so we should be able to trust + * ourselves not to misuse the helper. + */ + return dev->iommu->iommu_dev->ops; +} + +int iommu_group_replace_domain(struct iommu_group *group, + struct iommu_domain *new_domain); + +int iommu_device_register_bus(struct iommu_device *iommu, + const struct iommu_ops *ops, struct bus_type *bus, + struct notifier_block *nb); +void iommu_device_unregister_bus(struct iommu_device *iommu, + struct bus_type *bus, + struct notifier_block *nb); + +#endif /* __LINUX_IOMMU_PRIV_H */ |