1/* SPDX-License-Identifier: MIT */
2/*****************************************************************************
3 * xenbus.h
4 *
5 * Xenbus protocol details.
6 *
7 * Copyright (C) 2005 XenSource Ltd.
8 */
9
10#ifndef _XEN_PUBLIC_IO_XENBUS_H
11#define _XEN_PUBLIC_IO_XENBUS_H
12
13/* The state of either end of the Xenbus, i.e. the current communication
14   status of initialisation across the bus.  States here imply nothing about
15   the state of the connection between the driver and the kernel's device
16   layers.  */
17enum xenbus_state
18{
19	XenbusStateUnknown      = 0,
20	XenbusStateInitialising = 1,
21	XenbusStateInitWait     = 2,  /* Finished early
22					 initialisation, but waiting
23					 for information from the peer
24					 or hotplug scripts. */
25	XenbusStateInitialised  = 3,  /* Initialised and waiting for a
26					 connection from the peer. */
27	XenbusStateConnected    = 4,
28	XenbusStateClosing      = 5,  /* The device is being closed
29					 due to an error or an unplug
30					 event. */
31	XenbusStateClosed       = 6,
32
33	/*
34	* Reconfiguring: The device is being reconfigured.
35	*/
36	XenbusStateReconfiguring = 7,
37
38	XenbusStateReconfigured  = 8
39};
40
41#endif /* _XEN_PUBLIC_IO_XENBUS_H */
42