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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2015-2016 Samsung Electronics
* Igor Kotrasinski <i.kotrasinsk@samsung.com>
* Krzysztof Opasiak <k.opasiak@samsung.com>
*
* Refactored from usbip_host_driver.c, which is:
* Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
* 2005-2007 Takahiro Hirofuchi
*/
#ifndef __USBIP_HOST_COMMON_H
#define __USBIP_HOST_COMMON_H
#include <stdint.h>
#include <libudev.h>
#include <errno.h>
#include "list.h"
#include "usbip_common.h"
#include "sysfs_utils.h"
struct usbip_host_driver;
struct usbip_host_driver_ops {
int (*open)(struct usbip_host_driver *hdriver);
void (*close)(struct usbip_host_driver *hdriver);
int (*refresh_device_list)(struct usbip_host_driver *hdriver);
struct usbip_exported_device * (*get_device)(
struct usbip_host_driver *hdriver, int num);
int (*read_device)(struct udev_device *sdev,
struct usbip_usb_device *dev);
int (*read_interface)(struct usbip_usb_device *udev, int i,
struct usbip_usb_interface *uinf);
int (*is_my_device)(struct udev_device *udev);
};
struct usbip_host_driver {
int ndevs;
/* list of exported device */
struct list_head edev_list;
const char *udev_subsystem;
struct usbip_host_driver_ops ops;
};
struct usbip_exported_device {
struct udev_device *sudev;
int32_t status;
struct usbip_usb_device udev;
struct list_head node;
struct usbip_usb_interface uinf[];
};
/* External API to access the driver */
static inline int usbip_driver_open(struct usbip_host_driver *hdriver)
{
if (!hdriver->ops.open)
return -EOPNOTSUPP;
return hdriver->ops.open(hdriver);
}
static inline void usbip_driver_close(struct usbip_host_driver *hdriver)
{
if (!hdriver->ops.close)
return;
hdriver->ops.close(hdriver);
}
static inline int usbip_refresh_device_list(struct usbip_host_driver *hdriver)
{
if (!hdriver->ops.refresh_device_list)
return -EOPNOTSUPP;
return hdriver->ops.refresh_device_list(hdriver);
}
static inline struct usbip_exported_device *
usbip_get_device(struct usbip_host_driver *hdriver, int num)
{
if (!hdriver->ops.get_device)
return NULL;
return hdriver->ops.get_device(hdriver, num);
}
/* Helper functions for implementing driver backend */
int usbip_generic_driver_open(struct usbip_host_driver *hdriver);
void usbip_generic_driver_close(struct usbip_host_driver *hdriver);
int usbip_generic_refresh_device_list(struct usbip_host_driver *hdriver);
int usbip_export_device(struct usbip_exported_device *edev, int sockfd);
struct usbip_exported_device *usbip_generic_get_device(
struct usbip_host_driver *hdriver, int num);
#endif /* __USBIP_HOST_COMMON_H */
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