1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Mediated device interal 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_device {
28	struct device dev;
29	struct mdev_parent *parent;
30	guid_t uuid;
31	void *driver_data;
32	struct list_head next;
33	struct kobject *type_kobj;
34	struct device *iommu_device;
35	bool active;
36};
37
38#define to_mdev_device(dev)	container_of(dev, struct mdev_device, dev)
39#define dev_is_mdev(d)		((d)->bus == &mdev_bus_type)
40
41struct mdev_type {
42	struct kobject kobj;
43	struct kobject *devices_kobj;
44	struct mdev_parent *parent;
45	struct list_head next;
46	struct attribute_group *group;
47};
48
49#define to_mdev_type_attr(_attr)	\
50	container_of(_attr, struct mdev_type_attribute, attr)
51#define to_mdev_type(_kobj)		\
52	container_of(_kobj, struct mdev_type, kobj)
53
54int  parent_create_sysfs_files(struct mdev_parent *parent);
55void parent_remove_sysfs_files(struct mdev_parent *parent);
56
57int  mdev_create_sysfs_files(struct device *dev, struct mdev_type *type);
58void mdev_remove_sysfs_files(struct device *dev, struct mdev_type *type);
59
60int  mdev_device_create(struct kobject *kobj,
61			struct device *dev, const guid_t *uuid);
62int  mdev_device_remove(struct device *dev);
63
64#endif /* MDEV_PRIVATE_H */