sys/arch/xen/include/xen3-public/io/xenbus.h

   1 /* $NetBSD: xenbus.h,v 1.5 2007/10/17 19:58:32 garbled Exp $ */
   2 /*****************************************************************************
   3  * xenbus.h
   4  *
   5  * Xenbus protocol details.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to
   9  * deal in the Software without restriction, including without limitation the
  10  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  11  * sell copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  *
  25  * Copyright (C) 2005 XenSource Ltd.
  26  */
  27
  28 #ifndef _XEN_PUBLIC_IO_XENBUS_H
  29 #define _XEN_PUBLIC_IO_XENBUS_H
  30
  31 /*
  32  * The state of either end of the Xenbus, i.e. the current communication
  33  * status of initialisation across the bus.  States here imply nothing about
  34  * the state of the connection between the driver and the kernel's device
  35  * layers.
  36  */
  37 enum xenbus_state {
  38     XenbusStateUnknown       = 0,
  39
  40     XenbusStateInitialising  = 1,
  41
  42     /*
  43      * InitWait: Finished early initialisation but waiting for information
  44      * from the peer or hotplug scripts.
  45      */
  46     XenbusStateInitWait      = 2,
  47
  48     /*
  49      * Initialised: Waiting for a connection from the peer.
  50      */
  51     XenbusStateInitialised   = 3,
  52
  53     XenbusStateConnected     = 4,
  54
  55     /*
  56      * Closing: The device is being closed due to an error or an unplug event.
  57      */
  58     XenbusStateClosing       = 5,
  59
  60     XenbusStateClosed        = 6,
  61
  62     /*
  63      * Reconfiguring: The device is being reconfigured.
  64      */
  65     XenbusStateReconfiguring = 7,
  66
  67     XenbusStateReconfigured  = 8
  68 };
  69 typedef enum xenbus_state XenbusState;
  70
  71 #endif /* _XEN_PUBLIC_IO_XENBUS_H */
  72
  73 /*
  74  * Local variables:
  75  * mode: C
  76  * c-set-style: "BSD"
  77  * c-basic-offset: 4
  78  * tab-width: 4
  79  * indent-tabs-mode: nil
  80  * End:
  81  */