1/******************************************************************************
2 * xenbus_probe.h
3 *
4 * Talks to Xen Store to figure out what devices we have.
5 *
6 * Copyright (C) 2005 Rusty Russell, IBM Corporation
7 * Copyright (C) 2005 XenSource Ltd.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License version 2
11 * as published by the Free Software Foundation; or, when distributed
12 * separately from the Linux kernel or incorporated into other
13 * software packages, subject to the following license:
14 *
15 * Permission is hereby granted, free of charge, to any person obtaining a copy
16 * of this source file (the "Software"), to deal in the Software without
17 * restriction, including without limitation the rights to use, copy, modify,
18 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
19 * and to permit persons to whom the Software is furnished to do so, subject to
20 * the following conditions:
21 *
22 * The above copyright notice and this permission notice shall be included in
23 * all copies or substantial portions of the Software.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
26 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
27 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
28 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
29 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
30 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
31 * IN THE SOFTWARE.
32 */
33
34#ifndef _XENBUS_PROBE_H
35#define _XENBUS_PROBE_H
36
37#define XEN_BUS_ID_SIZE			20
38
39struct xen_bus_type {
40	char *root;
41	unsigned int levels;
42	int (*get_bus_id)(char bus_id[XEN_BUS_ID_SIZE], const char *nodename);
43	int (*probe)(struct xen_bus_type *bus, const char *type,
44		     const char *dir);
45	void (*otherend_changed)(struct xenbus_watch *watch, const char **vec,
46				 unsigned int len);
47	struct bus_type bus;
48};
49
50extern struct device_attribute xenbus_dev_attrs[];
51
52extern int xenbus_match(struct device *_dev, struct device_driver *_drv);
53extern int xenbus_dev_probe(struct device *_dev);
54extern int xenbus_dev_remove(struct device *_dev);
55extern int xenbus_register_driver_common(struct xenbus_driver *drv,
56					 struct xen_bus_type *bus);
57extern int xenbus_probe_node(struct xen_bus_type *bus,
58			     const char *type,
59			     const char *nodename);
60extern int xenbus_probe_devices(struct xen_bus_type *bus);
61
62extern void xenbus_dev_changed(const char *node, struct xen_bus_type *bus);
63
64extern void xenbus_dev_shutdown(struct device *_dev);
65
66extern int xenbus_dev_suspend(struct device *dev);
67extern int xenbus_dev_resume(struct device *dev);
68extern int xenbus_dev_cancel(struct device *dev);
69
70extern void xenbus_otherend_changed(struct xenbus_watch *watch,
71				    const char **vec, unsigned int len,
72				    int ignore_on_shutdown);
73
74extern int xenbus_read_otherend_details(struct xenbus_device *xendev,
75					char *id_node, char *path_node);
76
77void xenbus_ring_ops_init(void);
78
79#endif
80