projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| cba3345c AW |
1 | /* |
| 2 | * VFIO API definition | |
| 3 | * | |
| 4 | * Copyright (C) 2012 Red Hat, Inc. All rights reserved. | |
| 5 | * Author: Alex Williamson <alex.williamson@redhat.com> | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License version 2 as | |
| 9 | * published by the Free Software Foundation. | |
| 10 | */ | |
| 11 | #ifndef VFIO_H | |
| 12 | #define VFIO_H | |
| 13 | ||
| cba3345c AW |
14 | |
| 15 | #include <linux/iommu.h> | |
| 16 | #include <linux/mm.h> | |
| 607ca46e | 17 | #include <uapi/linux/vfio.h> |
| cba3345c AW |
18 | |
| 19 | /** | |
| 20 | * struct vfio_device_ops - VFIO bus driver device callbacks | |
| 21 | * | |
| 22 | * @open: Called when userspace creates new file descriptor for device | |
| 23 | * @release: Called when userspace releases file descriptor for device | |
| 24 | * @read: Perform read(2) on device file descriptor | |
| 25 | * @write: Perform write(2) on device file descriptor | |
| 26 | * @ioctl: Perform ioctl(2) on device file descriptor, supporting VFIO_DEVICE_* | |
| 27 | * operations documented below | |
| 28 | * @mmap: Perform mmap(2) on a region of the device file descriptor | |
| 29 | */ | |
| 30 | struct vfio_device_ops { | |
| 31 | char *name; | |
| 32 | int (*open)(void *device_data); | |
| 33 | void (*release)(void *device_data); | |
| 34 | ssize_t (*read)(void *device_data, char __user *buf, | |
| 35 | size_t count, loff_t *ppos); | |
| 36 | ssize_t (*write)(void *device_data, const char __user *buf, | |
| 37 | size_t count, loff_t *size); | |
| 38 | long (*ioctl)(void *device_data, unsigned int cmd, | |
| 39 | unsigned long arg); | |
| 40 | int (*mmap)(void *device_data, struct vm_area_struct *vma); | |
| 41 | }; | |
| 42 | ||
| 43 | extern int vfio_add_group_dev(struct device *dev, | |
| 44 | const struct vfio_device_ops *ops, | |
| 45 | void *device_data); | |
| 46 | ||
| 47 | extern void *vfio_del_group_dev(struct device *dev); | |
| 44f50716 VMP |
48 | extern struct vfio_device *vfio_device_get_from_dev(struct device *dev); |
| 49 | extern void vfio_device_put(struct vfio_device *device); | |
| 50 | extern void *vfio_device_data(struct vfio_device *device); | |
| cba3345c AW |
51 | |
| 52 | /** | |
| 53 | * struct vfio_iommu_driver_ops - VFIO IOMMU driver callbacks | |
| 54 | */ | |
| 55 | struct vfio_iommu_driver_ops { | |
| 56 | char *name; | |
| 57 | struct module *owner; | |
| 58 | void *(*open)(unsigned long arg); | |
| 59 | void (*release)(void *iommu_data); | |
| 60 | ssize_t (*read)(void *iommu_data, char __user *buf, | |
| 61 | size_t count, loff_t *ppos); | |
| 62 | ssize_t (*write)(void *iommu_data, const char __user *buf, | |
| 63 | size_t count, loff_t *size); | |
| 64 | long (*ioctl)(void *iommu_data, unsigned int cmd, | |
| 65 | unsigned long arg); | |
| 66 | int (*mmap)(void *iommu_data, struct vm_area_struct *vma); | |
| 67 | int (*attach_group)(void *iommu_data, | |
| 68 | struct iommu_group *group); | |
| 69 | void (*detach_group)(void *iommu_data, | |
| 70 | struct iommu_group *group); | |
| 71 | ||
| 72 | }; | |
| 73 | ||
| 74 | extern int vfio_register_iommu_driver(const struct vfio_iommu_driver_ops *ops); | |
| 75 | ||
| 76 | extern void vfio_unregister_iommu_driver( | |
| 77 | const struct vfio_iommu_driver_ops *ops); | |
| 78 | ||
| cba3345c | 79 | #endif /* VFIO_H */ |