xref: /openbmc/linux/drivers/vfio/mdev/mdev_private.h (revision cfdfc14e)
1 /*
2  * Mediated device interal definitions
3  *
4  * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
5  *     Author: Neo Jia <cjia@nvidia.com>
6  *             Kirti Wankhede <kwankhede@nvidia.com>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as
10  * published by the Free Software Foundation.
11  */
12 
13 #ifndef MDEV_PRIVATE_H
14 #define MDEV_PRIVATE_H
15 
16 int  mdev_bus_register(void);
17 void mdev_bus_unregister(void);
18 
19 struct mdev_parent {
20 	struct device *dev;
21 	const struct mdev_parent_ops *ops;
22 	struct kref ref;
23 	struct list_head next;
24 	struct kset *mdev_types_kset;
25 	struct list_head type_list;
26 };
27 
28 struct mdev_device {
29 	struct device dev;
30 	struct mdev_parent *parent;
31 	uuid_le uuid;
32 	void *driver_data;
33 	struct kref ref;
34 	struct list_head next;
35 	struct kobject *type_kobj;
36 	bool active;
37 };
38 
39 #define to_mdev_device(dev)	container_of(dev, struct mdev_device, dev)
40 #define dev_is_mdev(d)		((d)->bus == &mdev_bus_type)
41 
42 struct mdev_type {
43 	struct kobject kobj;
44 	struct kobject *devices_kobj;
45 	struct mdev_parent *parent;
46 	struct list_head next;
47 	struct attribute_group *group;
48 };
49 
50 #define to_mdev_type_attr(_attr)	\
51 	container_of(_attr, struct mdev_type_attribute, attr)
52 #define to_mdev_type(_kobj)		\
53 	container_of(_kobj, struct mdev_type, kobj)
54 
55 int  parent_create_sysfs_files(struct mdev_parent *parent);
56 void parent_remove_sysfs_files(struct mdev_parent *parent);
57 
58 int  mdev_create_sysfs_files(struct device *dev, struct mdev_type *type);
59 void mdev_remove_sysfs_files(struct device *dev, struct mdev_type *type);
60 
61 int  mdev_device_create(struct kobject *kobj, struct device *dev, uuid_le uuid);
62 int  mdev_device_remove(struct device *dev, bool force_remove);
63 
64 #endif /* MDEV_PRIVATE_H */
65