92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Mediated device definition
|
|
*
|
|
* Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
|
|
* Author: Neo Jia <cjia@nvidia.com>
|
|
* Kirti Wankhede <kwankhede@nvidia.com>
|
|
*/
|
|
|
|
#ifndef MDEV_H
|
|
#define MDEV_H
|
|
|
|
struct mdev_type;
|
|
|
|
struct mdev_device {
|
|
struct device dev;
|
|
guid_t uuid;
|
|
struct list_head next;
|
|
struct mdev_type *type;
|
|
bool active;
|
|
};
|
|
|
|
static inline struct mdev_device *to_mdev_device(struct device *dev)
|
|
{
|
|
return container_of(dev, struct mdev_device, dev);
|
|
}
|
|
|
|
unsigned int mdev_get_type_group_id(struct mdev_device *mdev);
|
|
unsigned int mtype_get_type_group_id(struct mdev_type *mtype);
|
|
struct device *mtype_get_parent_dev(struct mdev_type *mtype);
|
|
|
|
/* interface for exporting mdev supported type attributes */
|
|
struct mdev_type_attribute {
|
|
struct attribute attr;
|
|
ssize_t (*show)(struct mdev_type *mtype,
|
|
struct mdev_type_attribute *attr, char *buf);
|
|
ssize_t (*store)(struct mdev_type *mtype,
|
|
struct mdev_type_attribute *attr, const char *buf,
|
|
size_t count);
|
|
};
|
|
|
|
#define MDEV_TYPE_ATTR(_name, _mode, _show, _store) \
|
|
struct mdev_type_attribute mdev_type_attr_##_name = \
|
|
__ATTR(_name, _mode, _show, _store)
|
|
#define MDEV_TYPE_ATTR_RW(_name) \
|
|
struct mdev_type_attribute mdev_type_attr_##_name = __ATTR_RW(_name)
|
|
#define MDEV_TYPE_ATTR_RO(_name) \
|
|
struct mdev_type_attribute mdev_type_attr_##_name = __ATTR_RO(_name)
|
|
#define MDEV_TYPE_ATTR_WO(_name) \
|
|
struct mdev_type_attribute mdev_type_attr_##_name = __ATTR_WO(_name)
|
|
|
|
/**
|
|
* struct mdev_driver - Mediated device driver
|
|
* @probe: called when new device created
|
|
* @remove: called when device removed
|
|
* @supported_type_groups: Attributes to define supported types. It is mandatory
|
|
* to provide supported types.
|
|
* @driver: device driver structure
|
|
*
|
|
**/
|
|
struct mdev_driver {
|
|
int (*probe)(struct mdev_device *dev);
|
|
void (*remove)(struct mdev_device *dev);
|
|
struct attribute_group **supported_type_groups;
|
|
struct device_driver driver;
|
|
};
|
|
|
|
static inline const guid_t *mdev_uuid(struct mdev_device *mdev)
|
|
{
|
|
return &mdev->uuid;
|
|
}
|
|
|
|
extern struct bus_type mdev_bus_type;
|
|
|
|
int mdev_register_device(struct device *dev, struct mdev_driver *mdev_driver);
|
|
void mdev_unregister_device(struct device *dev);
|
|
|
|
int mdev_register_driver(struct mdev_driver *drv);
|
|
void mdev_unregister_driver(struct mdev_driver *drv);
|
|
|
|
struct device *mdev_parent_dev(struct mdev_device *mdev);
|
|
static inline struct device *mdev_dev(struct mdev_device *mdev)
|
|
{
|
|
return &mdev->dev;
|
|
}
|
|
static inline struct mdev_device *mdev_from_dev(struct device *dev)
|
|
{
|
|
return dev->bus == &mdev_bus_type ? to_mdev_device(dev) : NULL;
|
|
}
|
|
|
|
#endif /* MDEV_H */
|