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