1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Mediated device internal definitions
 4 *
 5 * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
 6 *     Author: Neo Jia <cjia@nvidia.com>
 7 *             Kirti Wankhede <kwankhede@nvidia.com>
 8 */
 9
10#ifndef MDEV_PRIVATE_H
11#define MDEV_PRIVATE_H
12
13int  mdev_bus_register(void);
14void mdev_bus_unregister(void);
15
16extern struct bus_type mdev_bus_type;
17extern const struct attribute_group *mdev_device_groups[];
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
18
19#define to_mdev_type_attr(_attr)	\
20	container_of(_attr, struct mdev_type_attribute, attr)
21#define to_mdev_type(_kobj)		\
22	container_of(_kobj, struct mdev_type, kobj)
23
 
 
24int  parent_create_sysfs_files(struct mdev_parent *parent);
25void parent_remove_sysfs_files(struct mdev_parent *parent);
26
27int  mdev_create_sysfs_files(struct mdev_device *mdev);
28void mdev_remove_sysfs_files(struct mdev_device *mdev);
29
30int mdev_device_create(struct mdev_type *kobj, const guid_t *uuid);
31int  mdev_device_remove(struct mdev_device *dev);
 
 
 
 
 
 
 
 
 
 
 
 
32
33#endif /* MDEV_PRIVATE_H */

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Mediated device internal definitions
 4 *
 5 * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
 6 *     Author: Neo Jia <cjia@nvidia.com>
 7 *             Kirti Wankhede <kwankhede@nvidia.com>
 8 */
 9
10#ifndef MDEV_PRIVATE_H
11#define MDEV_PRIVATE_H
12
13int  mdev_bus_register(void);
14void mdev_bus_unregister(void);
15
16struct mdev_parent {
17	struct device *dev;
18	const struct mdev_parent_ops *ops;
19	struct kref ref;
20	struct list_head next;
21	struct kset *mdev_types_kset;
22	struct list_head type_list;
23	/* Synchronize device creation/removal with parent unregistration */
24	struct rw_semaphore unreg_sem;
25};
26
27struct mdev_type {
28	struct kobject kobj;
29	struct kobject *devices_kobj;
30	struct mdev_parent *parent;
31	struct list_head next;
32	unsigned int type_group_id;
33};
34
35#define to_mdev_type_attr(_attr)	\
36	container_of(_attr, struct mdev_type_attribute, attr)
37#define to_mdev_type(_kobj)		\
38	container_of(_kobj, struct mdev_type, kobj)
39
40extern struct mdev_driver vfio_mdev_driver;
41
42int  parent_create_sysfs_files(struct mdev_parent *parent);
43void parent_remove_sysfs_files(struct mdev_parent *parent);
44
45int  mdev_create_sysfs_files(struct mdev_device *mdev);
46void mdev_remove_sysfs_files(struct mdev_device *mdev);
47
48int mdev_device_create(struct mdev_type *kobj, const guid_t *uuid);
49int  mdev_device_remove(struct mdev_device *dev);
50
51void mdev_release_parent(struct kref *kref);
52
53static inline void mdev_get_parent(struct mdev_parent *parent)
54{
55	kref_get(&parent->ref);
56}
57
58static inline void mdev_put_parent(struct mdev_parent *parent)
59{
60	kref_put(&parent->ref, mdev_release_parent);
61}
62
63#endif /* MDEV_PRIVATE_H */