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4bac07c9 JF |
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 | ||
2a678cc5 KS |
37 | #define XEN_BUS_ID_SIZE 20 |
38 | ||
4bac07c9 JF |
39 | #ifdef CONFIG_XEN_BACKEND |
40 | extern void xenbus_backend_suspend(int (*fn)(struct device *, void *)); | |
41 | extern void xenbus_backend_resume(int (*fn)(struct device *, void *)); | |
42 | extern void xenbus_backend_probe_and_watch(void); | |
43 | extern int xenbus_backend_bus_register(void); | |
44 | extern void xenbus_backend_bus_unregister(void); | |
45 | #else | |
46 | static inline void xenbus_backend_suspend(int (*fn)(struct device *, void *)) {} | |
47 | static inline void xenbus_backend_resume(int (*fn)(struct device *, void *)) {} | |
48 | static inline void xenbus_backend_probe_and_watch(void) {} | |
49 | static inline int xenbus_backend_bus_register(void) { return 0; } | |
50 | static inline void xenbus_backend_bus_unregister(void) {} | |
51 | #endif | |
52 | ||
53 | struct xen_bus_type | |
54 | { | |
55 | char *root; | |
56 | unsigned int levels; | |
2a678cc5 | 57 | int (*get_bus_id)(char bus_id[XEN_BUS_ID_SIZE], const char *nodename); |
4bac07c9 JF |
58 | int (*probe)(const char *type, const char *dir); |
59 | struct bus_type bus; | |
60 | }; | |
61 | ||
62 | extern int xenbus_match(struct device *_dev, struct device_driver *_drv); | |
63 | extern int xenbus_dev_probe(struct device *_dev); | |
64 | extern int xenbus_dev_remove(struct device *_dev); | |
65 | extern int xenbus_register_driver_common(struct xenbus_driver *drv, | |
66 | struct xen_bus_type *bus, | |
67 | struct module *owner, | |
68 | const char *mod_name); | |
69 | extern int xenbus_probe_node(struct xen_bus_type *bus, | |
70 | const char *type, | |
71 | const char *nodename); | |
72 | extern int xenbus_probe_devices(struct xen_bus_type *bus); | |
73 | ||
74 | extern void xenbus_dev_changed(const char *node, struct xen_bus_type *bus); | |
75 | ||
76 | #endif |