Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Jason Gunthorpe | 630 | 33.37% | 21 | 29.58% |
Yi L Liu | 545 | 28.87% | 19 | 26.76% |
Alex Williamson | 311 | 16.47% | 6 | 8.45% |
Kirti Wankhede | 149 | 7.89% | 6 | 8.45% |
Christoph Hellwig | 72 | 3.81% | 4 | 5.63% |
Longfang Liu | 38 | 2.01% | 1 | 1.41% |
Zhao Yan | 32 | 1.69% | 1 | 1.41% |
Matthew Rosato | 30 | 1.59% | 1 | 1.41% |
Nicolin Chen | 21 | 1.11% | 3 | 4.23% |
Antonios Motakis | 17 | 0.90% | 2 | 2.82% |
Jike Song | 15 | 0.79% | 2 | 2.82% |
Kevin Tian | 12 | 0.64% | 1 | 1.41% |
Lu Baolu | 6 | 0.32% | 1 | 1.41% |
Paolo Bonzini | 6 | 0.32% | 1 | 1.41% |
Gavin Shan | 3 | 0.16% | 1 | 1.41% |
Thomas Gleixner | 1 | 0.05% | 1 | 1.41% |
Total | 1888 | 71 |
/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2012 Red Hat, Inc. All rights reserved. * Author: Alex Williamson <alex.williamson@redhat.com> */ #ifndef __VFIO_VFIO_H__ #define __VFIO_VFIO_H__ #include <linux/file.h> #include <linux/device.h> #include <linux/cdev.h> #include <linux/module.h> #include <linux/vfio.h> struct iommufd_ctx; struct iommu_group; struct vfio_container; struct vfio_device_file { struct vfio_device *device; struct vfio_group *group; u8 access_granted; u32 devid; /* only valid when iommufd is valid */ spinlock_t kvm_ref_lock; /* protect kvm field */ struct kvm *kvm; struct iommufd_ctx *iommufd; /* protected by struct vfio_device_set::lock */ }; void vfio_device_put_registration(struct vfio_device *device); bool vfio_device_try_get_registration(struct vfio_device *device); int vfio_df_open(struct vfio_device_file *df); void vfio_df_close(struct vfio_device_file *df); struct vfio_device_file * vfio_allocate_device_file(struct vfio_device *device); extern const struct file_operations vfio_device_fops; #ifdef CONFIG_VFIO_NOIOMMU extern bool vfio_noiommu __read_mostly; #else enum { vfio_noiommu = false }; #endif 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, }; #if IS_ENABLED(CONFIG_VFIO_GROUP) struct vfio_group { struct device dev; struct cdev cdev; /* * When drivers is non-zero a driver is attached to the struct device * that provided the iommu_group and thus the iommu_group is a valid * pointer. When drivers is 0 the driver is being detached. Once users * reaches 0 then the iommu_group is invalid. */ refcount_t drivers; unsigned int container_users; struct iommu_group *iommu_group; struct vfio_container *container; struct list_head device_list; struct mutex device_lock; struct list_head vfio_next; #if IS_ENABLED(CONFIG_VFIO_CONTAINER) struct list_head container_next; #endif enum vfio_group_type type; struct mutex group_lock; struct kvm *kvm; struct file *opened_file; struct blocking_notifier_head notifier; struct iommufd_ctx *iommufd; spinlock_t kvm_ref_lock; unsigned int cdev_device_open_cnt; }; int vfio_device_block_group(struct vfio_device *device); void vfio_device_unblock_group(struct vfio_device *device); int vfio_device_set_group(struct vfio_device *device, enum vfio_group_type type); void vfio_device_remove_group(struct vfio_device *device); void vfio_device_group_register(struct vfio_device *device); void vfio_device_group_unregister(struct vfio_device *device); int vfio_device_group_use_iommu(struct vfio_device *device); void vfio_device_group_unuse_iommu(struct vfio_device *device); void vfio_df_group_close(struct vfio_device_file *df); struct vfio_group *vfio_group_from_file(struct file *file); bool vfio_group_enforced_coherent(struct vfio_group *group); void vfio_group_set_kvm(struct vfio_group *group, struct kvm *kvm); bool vfio_device_has_container(struct vfio_device *device); int __init vfio_group_init(void); void vfio_group_cleanup(void); static inline bool vfio_device_is_noiommu(struct vfio_device *vdev) { return IS_ENABLED(CONFIG_VFIO_NOIOMMU) && vdev->group->type == VFIO_NO_IOMMU; } #else struct vfio_group; static inline int vfio_device_block_group(struct vfio_device *device) { return 0; } static inline void vfio_device_unblock_group(struct vfio_device *device) { } static inline int vfio_device_set_group(struct vfio_device *device, enum vfio_group_type type) { return 0; } static inline void vfio_device_remove_group(struct vfio_device *device) { } static inline void vfio_device_group_register(struct vfio_device *device) { } static inline void vfio_device_group_unregister(struct vfio_device *device) { } static inline int vfio_device_group_use_iommu(struct vfio_device *device) { return -EOPNOTSUPP; } static inline void vfio_device_group_unuse_iommu(struct vfio_device *device) { } static inline void vfio_df_group_close(struct vfio_device_file *df) { } static inline struct vfio_group *vfio_group_from_file(struct file *file) { return NULL; } static inline bool vfio_group_enforced_coherent(struct vfio_group *group) { return true; } static inline void vfio_group_set_kvm(struct vfio_group *group, struct kvm *kvm) { } static inline bool vfio_device_has_container(struct vfio_device *device) { return false; } static inline int __init vfio_group_init(void) { return 0; } static inline void vfio_group_cleanup(void) { } static inline bool vfio_device_is_noiommu(struct vfio_device *vdev) { return false; } #endif /* CONFIG_VFIO_GROUP */ #if IS_ENABLED(CONFIG_VFIO_CONTAINER) /** * 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, dma_addr_t user_iova, int npage, int prot, struct page **pages); void (*unpin_pages)(void *iommu_data, dma_addr_t user_iova, int npage); void (*register_device)(void *iommu_data, struct vfio_device *vdev); void (*unregister_device)(void *iommu_data, struct vfio_device *vdev); 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); }; struct vfio_iommu_driver { const struct vfio_iommu_driver_ops *ops; struct list_head vfio_next; }; int vfio_register_iommu_driver(const struct vfio_iommu_driver_ops *ops); void vfio_unregister_iommu_driver(const struct vfio_iommu_driver_ops *ops); struct vfio_container *vfio_container_from_file(struct file *filep); int vfio_group_use_container(struct vfio_group *group); void vfio_group_unuse_container(struct vfio_group *group); int vfio_container_attach_group(struct vfio_container *container, struct vfio_group *group); void vfio_group_detach_container(struct vfio_group *group); void vfio_device_container_register(struct vfio_device *device); void vfio_device_container_unregister(struct vfio_device *device); int vfio_device_container_pin_pages(struct vfio_device *device, dma_addr_t iova, int npage, int prot, struct page **pages); void vfio_device_container_unpin_pages(struct vfio_device *device, dma_addr_t iova, int npage); int vfio_device_container_dma_rw(struct vfio_device *device, dma_addr_t iova, void *data, size_t len, bool write); int __init vfio_container_init(void); void vfio_container_cleanup(void); #else static inline struct vfio_container * vfio_container_from_file(struct file *filep) { return NULL; } static inline int vfio_group_use_container(struct vfio_group *group) { return -EOPNOTSUPP; } static inline void vfio_group_unuse_container(struct vfio_group *group) { } static inline int vfio_container_attach_group(struct vfio_container *container, struct vfio_group *group) { return -EOPNOTSUPP; } static inline void vfio_group_detach_container(struct vfio_group *group) { } static inline void vfio_device_container_register(struct vfio_device *device) { } static inline void vfio_device_container_unregister(struct vfio_device *device) { } static inline int vfio_device_container_pin_pages(struct vfio_device *device, dma_addr_t iova, int npage, int prot, struct page **pages) { return -EOPNOTSUPP; } static inline void vfio_device_container_unpin_pages(struct vfio_device *device, dma_addr_t iova, int npage) { } static inline int vfio_device_container_dma_rw(struct vfio_device *device, dma_addr_t iova, void *data, size_t len, bool write) { return -EOPNOTSUPP; } static inline int vfio_container_init(void) { return 0; } static inline void vfio_container_cleanup(void) { } #endif #if IS_ENABLED(CONFIG_IOMMUFD) bool vfio_iommufd_device_has_compat_ioas(struct vfio_device *vdev, struct iommufd_ctx *ictx); int vfio_df_iommufd_bind(struct vfio_device_file *df); void vfio_df_iommufd_unbind(struct vfio_device_file *df); int vfio_iommufd_compat_attach_ioas(struct vfio_device *device, struct iommufd_ctx *ictx); #else static inline bool vfio_iommufd_device_has_compat_ioas(struct vfio_device *vdev, struct iommufd_ctx *ictx) { return false; } static inline int vfio_df_iommufd_bind(struct vfio_device_file *fd) { return -EOPNOTSUPP; } static inline void vfio_df_iommufd_unbind(struct vfio_device_file *df) { } static inline int vfio_iommufd_compat_attach_ioas(struct vfio_device *device, struct iommufd_ctx *ictx) { return -EOPNOTSUPP; } #endif int vfio_df_ioctl_attach_pt(struct vfio_device_file *df, struct vfio_device_attach_iommufd_pt __user *arg); int vfio_df_ioctl_detach_pt(struct vfio_device_file *df, struct vfio_device_detach_iommufd_pt __user *arg); #if IS_ENABLED(CONFIG_VFIO_DEVICE_CDEV) void vfio_init_device_cdev(struct vfio_device *device); static inline int vfio_device_add(struct vfio_device *device) { /* cdev does not support noiommu device */ if (vfio_device_is_noiommu(device)) return device_add(&device->device); vfio_init_device_cdev(device); return cdev_device_add(&device->cdev, &device->device); } static inline void vfio_device_del(struct vfio_device *device) { if (vfio_device_is_noiommu(device)) device_del(&device->device); else cdev_device_del(&device->cdev, &device->device); } int vfio_device_fops_cdev_open(struct inode *inode, struct file *filep); long vfio_df_ioctl_bind_iommufd(struct vfio_device_file *df, struct vfio_device_bind_iommufd __user *arg); void vfio_df_unbind_iommufd(struct vfio_device_file *df); int vfio_cdev_init(struct class *device_class); void vfio_cdev_cleanup(void); #else static inline void vfio_init_device_cdev(struct vfio_device *device) { } static inline int vfio_device_add(struct vfio_device *device) { return device_add(&device->device); } static inline void vfio_device_del(struct vfio_device *device) { device_del(&device->device); } static inline int vfio_device_fops_cdev_open(struct inode *inode, struct file *filep) { return 0; } static inline long vfio_df_ioctl_bind_iommufd(struct vfio_device_file *df, struct vfio_device_bind_iommufd __user *arg) { return -ENOTTY; } static inline void vfio_df_unbind_iommufd(struct vfio_device_file *df) { } static inline int vfio_cdev_init(struct class *device_class) { return 0; } static inline void vfio_cdev_cleanup(void) { } #endif /* CONFIG_VFIO_DEVICE_CDEV */ #if IS_ENABLED(CONFIG_VFIO_VIRQFD) int __init vfio_virqfd_init(void); void vfio_virqfd_exit(void); #else static inline int __init vfio_virqfd_init(void) { return 0; } static inline void vfio_virqfd_exit(void) { } #endif #if IS_ENABLED(CONFIG_KVM) void vfio_device_get_kvm_safe(struct vfio_device *device, struct kvm *kvm); void vfio_device_put_kvm(struct vfio_device *device); #else static inline void vfio_device_get_kvm_safe(struct vfio_device *device, struct kvm *kvm) { } static inline void vfio_device_put_kvm(struct vfio_device *device) { } #endif #ifdef CONFIG_VFIO_DEBUGFS void vfio_debugfs_create_root(void); void vfio_debugfs_remove_root(void); void vfio_device_debugfs_init(struct vfio_device *vdev); void vfio_device_debugfs_exit(struct vfio_device *vdev); #else static inline void vfio_debugfs_create_root(void) { } static inline void vfio_debugfs_remove_root(void) { } static inline void vfio_device_debugfs_init(struct vfio_device *vdev) { } static inline void vfio_device_debugfs_exit(struct vfio_device *vdev) { } #endif /* CONFIG_VFIO_DEBUGFS */ #endif
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