| Jeremy Fitzhardinge | 4bac07c | 2007-07-17 18:37:06 -0700 | [diff] [blame] | 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 | #ifdef CONFIG_XEN_BACKEND |
| 38 | extern void xenbus_backend_suspend(int (*fn)(struct device *, void *)); |
| 39 | extern void xenbus_backend_resume(int (*fn)(struct device *, void *)); |
| 40 | extern void xenbus_backend_probe_and_watch(void); |
| 41 | extern int xenbus_backend_bus_register(void); |
| 42 | extern void xenbus_backend_bus_unregister(void); |
| 43 | #else |
| 44 | static inline void xenbus_backend_suspend(int (*fn)(struct device *, void *)) {} |
| 45 | static inline void xenbus_backend_resume(int (*fn)(struct device *, void *)) {} |
| 46 | static inline void xenbus_backend_probe_and_watch(void) {} |
| 47 | static inline int xenbus_backend_bus_register(void) { return 0; } |
| 48 | static inline void xenbus_backend_bus_unregister(void) {} |
| 49 | #endif |
| 50 | |
| 51 | struct xen_bus_type |
| 52 | { |
| 53 | char *root; |
| 54 | unsigned int levels; |
| 55 | int (*get_bus_id)(char bus_id[BUS_ID_SIZE], const char *nodename); |
| 56 | int (*probe)(const char *type, const char *dir); |
| 57 | struct bus_type bus; |
| 58 | }; |
| 59 | |
| 60 | extern int xenbus_match(struct device *_dev, struct device_driver *_drv); |
| 61 | extern int xenbus_dev_probe(struct device *_dev); |
| 62 | extern int xenbus_dev_remove(struct device *_dev); |
| 63 | extern int xenbus_register_driver_common(struct xenbus_driver *drv, |
| 64 | struct xen_bus_type *bus, |
| 65 | struct module *owner, |
| 66 | const char *mod_name); |
| 67 | extern int xenbus_probe_node(struct xen_bus_type *bus, |
| 68 | const char *type, |
| 69 | const char *nodename); |
| 70 | extern int xenbus_probe_devices(struct xen_bus_type *bus); |
| 71 | |
| 72 | extern void xenbus_dev_changed(const char *node, struct xen_bus_type *bus); |
| 73 | |
| 74 | #endif |