64 строки
1.6 KiB
C
64 строки
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Mediated device internal definitions
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*
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* Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
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* Author: Neo Jia <cjia@nvidia.com>
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* Kirti Wankhede <kwankhede@nvidia.com>
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*/
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#ifndef MDEV_PRIVATE_H
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#define MDEV_PRIVATE_H
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int mdev_bus_register(void);
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void mdev_bus_unregister(void);
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struct mdev_parent {
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struct device *dev;
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const struct mdev_parent_ops *ops;
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struct kref ref;
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struct list_head next;
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struct kset *mdev_types_kset;
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struct list_head type_list;
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/* Synchronize device creation/removal with parent unregistration */
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struct rw_semaphore unreg_sem;
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};
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struct mdev_type {
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struct kobject kobj;
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struct kobject *devices_kobj;
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struct mdev_parent *parent;
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struct list_head next;
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unsigned int type_group_id;
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};
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#define to_mdev_type_attr(_attr) \
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container_of(_attr, struct mdev_type_attribute, attr)
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#define to_mdev_type(_kobj) \
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container_of(_kobj, struct mdev_type, kobj)
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extern struct mdev_driver vfio_mdev_driver;
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int parent_create_sysfs_files(struct mdev_parent *parent);
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void parent_remove_sysfs_files(struct mdev_parent *parent);
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int mdev_create_sysfs_files(struct mdev_device *mdev);
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void mdev_remove_sysfs_files(struct mdev_device *mdev);
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int mdev_device_create(struct mdev_type *kobj, const guid_t *uuid);
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int mdev_device_remove(struct mdev_device *dev);
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void mdev_release_parent(struct kref *kref);
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static inline void mdev_get_parent(struct mdev_parent *parent)
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{
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kref_get(&parent->ref);
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}
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static inline void mdev_put_parent(struct mdev_parent *parent)
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{
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kref_put(&parent->ref, mdev_release_parent);
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}
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#endif /* MDEV_PRIVATE_H */
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