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139 lines
4.2 KiB
139 lines
4.2 KiB
/* |
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* Private include for xenbus communications. |
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* |
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* Copyright (C) 2005 Rusty Russell, IBM Corporation |
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* Copyright (C) 2005 XenSource Ltd. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License version 2 |
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* as published by the Free Software Foundation; or, when distributed |
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* separately from the Linux kernel or incorporated into other |
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* software packages, subject to the following license: |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this source file (the "Software"), to deal in the Software without |
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* restriction, including without limitation the rights to use, copy, modify, |
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, |
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* and to permit persons to whom the Software is furnished to do so, subject to |
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* the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
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* IN THE SOFTWARE. |
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*/ |
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#ifndef _XENBUS_XENBUS_H |
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#define _XENBUS_XENBUS_H |
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#include <linux/mutex.h> |
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#include <linux/uio.h> |
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#include <xen/xenbus.h> |
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#define XEN_BUS_ID_SIZE 20 |
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struct xen_bus_type { |
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char *root; |
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unsigned int levels; |
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int (*get_bus_id)(char bus_id[XEN_BUS_ID_SIZE], const char *nodename); |
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int (*probe)(struct xen_bus_type *bus, const char *type, |
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const char *dir); |
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bool (*otherend_will_handle)(struct xenbus_watch *watch, |
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const char *path, const char *token); |
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void (*otherend_changed)(struct xenbus_watch *watch, const char *path, |
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const char *token); |
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struct bus_type bus; |
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}; |
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enum xenstore_init { |
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XS_UNKNOWN, |
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XS_PV, |
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XS_HVM, |
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XS_LOCAL, |
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}; |
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struct xs_watch_event { |
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struct list_head list; |
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unsigned int len; |
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struct xenbus_watch *handle; |
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const char *path; |
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const char *token; |
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char body[]; |
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}; |
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enum xb_req_state { |
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xb_req_state_queued, |
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xb_req_state_wait_reply, |
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xb_req_state_got_reply, |
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xb_req_state_aborted |
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}; |
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struct xb_req_data { |
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struct list_head list; |
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wait_queue_head_t wq; |
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struct xsd_sockmsg msg; |
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uint32_t caller_req_id; |
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enum xsd_sockmsg_type type; |
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char *body; |
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const struct kvec *vec; |
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int num_vecs; |
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int err; |
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enum xb_req_state state; |
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bool user_req; |
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void (*cb)(struct xb_req_data *); |
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void *par; |
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}; |
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extern enum xenstore_init xen_store_domain_type; |
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extern const struct attribute_group *xenbus_dev_groups[]; |
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extern struct mutex xs_response_mutex; |
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extern struct list_head xs_reply_list; |
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extern struct list_head xb_write_list; |
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extern wait_queue_head_t xb_waitq; |
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extern struct mutex xb_write_mutex; |
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int xs_init(void); |
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int xb_init_comms(void); |
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void xb_deinit_comms(void); |
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int xs_watch_msg(struct xs_watch_event *event); |
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void xs_request_exit(struct xb_req_data *req); |
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int xenbus_match(struct device *_dev, struct device_driver *_drv); |
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int xenbus_dev_probe(struct device *_dev); |
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void xenbus_dev_remove(struct device *_dev); |
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int xenbus_register_driver_common(struct xenbus_driver *drv, |
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struct xen_bus_type *bus, |
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struct module *owner, |
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const char *mod_name); |
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int xenbus_probe_node(struct xen_bus_type *bus, |
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const char *type, |
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const char *nodename); |
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int xenbus_probe_devices(struct xen_bus_type *bus); |
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void xenbus_dev_changed(const char *node, struct xen_bus_type *bus); |
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int xenbus_dev_suspend(struct device *dev); |
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int xenbus_dev_resume(struct device *dev); |
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int xenbus_dev_cancel(struct device *dev); |
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void xenbus_otherend_changed(struct xenbus_watch *watch, |
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const char *path, const char *token, |
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int ignore_on_shutdown); |
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int xenbus_read_otherend_details(struct xenbus_device *xendev, |
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char *id_node, char *path_node); |
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void xenbus_ring_ops_init(void); |
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int xenbus_dev_request_and_reply(struct xsd_sockmsg *msg, void *par); |
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void xenbus_dev_queue_reply(struct xb_req_data *req); |
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extern unsigned int xb_dev_generation_id; |
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#endif
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