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 80