mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
2.3 KiB
72 lines
2.3 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
|
/* |
|
* Copyright (C) 2012 Red Hat, Inc. All rights reserved. |
|
* Author: Alex Williamson <[email protected]> |
|
*/ |
|
|
|
enum vfio_group_type { |
|
/* |
|
* Physical device with IOMMU backing. |
|
*/ |
|
VFIO_IOMMU, |
|
|
|
/* |
|
* Virtual device without IOMMU backing. The VFIO core fakes up an |
|
* iommu_group as the iommu_group sysfs interface is part of the |
|
* userspace ABI. The user of these devices must not be able to |
|
* directly trigger unmediated DMA. |
|
*/ |
|
VFIO_EMULATED_IOMMU, |
|
|
|
/* |
|
* Physical device without IOMMU backing. The VFIO core fakes up an |
|
* iommu_group as the iommu_group sysfs interface is part of the |
|
* userspace ABI. Users can trigger unmediated DMA by the device, |
|
* usage is highly dangerous, requires an explicit opt-in and will |
|
* taint the kernel. |
|
*/ |
|
VFIO_NO_IOMMU, |
|
}; |
|
|
|
/* events for the backend driver notify callback */ |
|
enum vfio_iommu_notify_type { |
|
VFIO_IOMMU_CONTAINER_CLOSE = 0, |
|
}; |
|
|
|
/** |
|
* struct vfio_iommu_driver_ops - VFIO IOMMU driver callbacks |
|
*/ |
|
struct vfio_iommu_driver_ops { |
|
char *name; |
|
struct module *owner; |
|
void *(*open)(unsigned long arg); |
|
void (*release)(void *iommu_data); |
|
long (*ioctl)(void *iommu_data, unsigned int cmd, |
|
unsigned long arg); |
|
int (*attach_group)(void *iommu_data, |
|
struct iommu_group *group, |
|
enum vfio_group_type); |
|
void (*detach_group)(void *iommu_data, |
|
struct iommu_group *group); |
|
int (*pin_pages)(void *iommu_data, |
|
struct iommu_group *group, |
|
unsigned long *user_pfn, |
|
int npage, int prot, |
|
unsigned long *phys_pfn); |
|
int (*unpin_pages)(void *iommu_data, |
|
unsigned long *user_pfn, int npage); |
|
int (*register_notifier)(void *iommu_data, |
|
unsigned long *events, |
|
struct notifier_block *nb); |
|
int (*unregister_notifier)(void *iommu_data, |
|
struct notifier_block *nb); |
|
int (*dma_rw)(void *iommu_data, dma_addr_t user_iova, |
|
void *data, size_t count, bool write); |
|
struct iommu_domain *(*group_iommu_domain)(void *iommu_data, |
|
struct iommu_group *group); |
|
void (*notify)(void *iommu_data, |
|
enum vfio_iommu_notify_type event); |
|
}; |
|
|
|
int vfio_register_iommu_driver(const struct vfio_iommu_driver_ops *ops); |
|
void vfio_unregister_iommu_driver(const struct vfio_iommu_driver_ops *ops);
|
|
|