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/*
* Copyright 2009 Novell. All Rights Reserved.
*
* Mediates access to a host VBUS from a guest kernel by providing a
* global view of all VBUS devices
*
* Author:
* Gregory Haskins <ghaskins@novell.com>
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef _LINUX_VBUS_DRIVER_H
#define _LINUX_VBUS_DRIVER_H
#include <linux/device.h>
#include <linux/shm_signal.h>
#include <linux/ioq.h>
struct vbus_device_proxy;
struct vbus_driver;
struct vbus_device_proxy_ops {
int (*open)(struct vbus_device_proxy *dev, int version, int flags);
int (*close)(struct vbus_device_proxy *dev, int flags);
int (*shm)(struct vbus_device_proxy *dev, const char *name,
int id, int prio,
void *ptr, size_t len,
struct shm_signal_desc *sigdesc, struct shm_signal **signal,
int flags);
int (*call)(struct vbus_device_proxy *dev, u32 func,
void *data, size_t len, int flags);
void (*release)(struct vbus_device_proxy *dev);
};
struct vbus_device_proxy {
char *type;
u64 id;
void *priv; /* Used by drivers */
struct vbus_device_proxy_ops *ops;
struct device dev;
};
int vbus_device_proxy_register(struct vbus_device_proxy *dev);
void vbus_device_proxy_unregister(struct vbus_device_proxy *dev);
struct vbus_device_proxy *vbus_device_proxy_find(u64 id);
struct vbus_driver_ops {
int (*probe)(struct vbus_device_proxy *dev);
int (*remove)(struct vbus_device_proxy *dev);
};
struct vbus_driver {
char *type;
struct module *owner;
struct vbus_driver_ops *ops;
struct device_driver drv;
};
int vbus_driver_register(struct vbus_driver *drv);
void vbus_driver_unregister(struct vbus_driver *drv);
/*
* driver-side IOQ helper - allocates device-shm and maps an IOQ on it
*/
int vbus_driver_ioq_alloc(struct vbus_device_proxy *dev, const char *name,
int id, int prio, size_t ringsize, struct ioq **ioq);
#define VBUS_DRIVER_AUTOPROBE(name) MODULE_ALIAS("vbus-proxy:" name)
#endif /* _LINUX_VBUS_DRIVER_H */
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