Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
xenbus_probe.h
Go to the documentation of this file.
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 
39 struct 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 
50 extern struct device_attribute xenbus_dev_attrs[];
51 
52 extern int xenbus_match(struct device *_dev, struct device_driver *_drv);
53 extern int xenbus_dev_probe(struct device *_dev);
54 extern int xenbus_dev_remove(struct device *_dev);
55 extern int xenbus_register_driver_common(struct xenbus_driver *drv,
56  struct xen_bus_type *bus);
57 extern int xenbus_probe_node(struct xen_bus_type *bus,
58  const char *type,
59  const char *nodename);
60 extern int xenbus_probe_devices(struct xen_bus_type *bus);
61 
62 extern void xenbus_dev_changed(const char *node, struct xen_bus_type *bus);
63 
64 extern void xenbus_dev_shutdown(struct device *_dev);
65 
66 extern int xenbus_dev_suspend(struct device *dev);
67 extern int xenbus_dev_resume(struct device *dev);
68 extern int xenbus_dev_cancel(struct device *dev);
69 
70 extern void xenbus_otherend_changed(struct xenbus_watch *watch,
71  const char **vec, unsigned int len,
72  int ignore_on_shutdown);
73 
74 extern int xenbus_read_otherend_details(struct xenbus_device *xendev,
75  char *id_node, char *path_node);
76 
77 void xenbus_ring_ops_init(void);
78 
79 #endif