include/xen/evtchn.h

   1 /******************************************************************************
   2  * evtchn.h
   3  *
   4  * Interface to /dev/xen/evtchn.
   5  *
   6  * Copyright (c) 2003-2005, K A Fraser
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License version 2
  10  * as published by the Free Software Foundation; or, when distributed
  11  * separately from the Linux kernel or incorporated into other
  12  * software packages, subject to the following license:
  13  *
  14  * Permission is hereby granted, free of charge, to any person obtaining a copy
  15  * of this source file (the "Software"), to deal in the Software without
  16  * restriction, including without limitation the rights to use, copy, modify,
  17  * merge, publish, distribute, sublicense, and/or sell copies of the Software,
  18  * and to permit persons to whom the Software is furnished to do so, subject to
  19  * the following conditions:
  20  *
  21  * The above copyright notice and this permission notice shall be included in
  22  * all copies or substantial portions of the Software.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  25  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  26  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  27  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  28  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  29  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  30  * IN THE SOFTWARE.
  31  */
  32
  33 #ifndef __LINUX_PUBLIC_EVTCHN_H__
  34 #define __LINUX_PUBLIC_EVTCHN_H__
  35
  36 /*
  37  * Bind a fresh port to VIRQ @virq.
  38  * Return allocated port.
  39  */
  40 #define IOCTL_EVTCHN_BIND_VIRQ                          \
  41         _IOC(_IOC_NONE, 'E', 0, sizeof(struct ioctl_evtchn_bind_virq))
  42 struct ioctl_evtchn_bind_virq {
  43         unsigned int virq;
  44 };
  45
  46 /*
  47  * Bind a fresh port to remote <@remote_domain, @remote_port>.
  48  * Return allocated port.
  49  */
  50 #define IOCTL_EVTCHN_BIND_INTERDOMAIN                   \
  51         _IOC(_IOC_NONE, 'E', 1, sizeof(struct ioctl_evtchn_bind_interdomain))
  52 struct ioctl_evtchn_bind_interdomain {
  53         unsigned int remote_domain, remote_port;
  54 };
  55
  56 /*
  57  * Allocate a fresh port for binding to @remote_domain.
  58  * Return allocated port.
  59  */
  60 #define IOCTL_EVTCHN_BIND_UNBOUND_PORT                  \
  61         _IOC(_IOC_NONE, 'E', 2, sizeof(struct ioctl_evtchn_bind_unbound_port))
  62 struct ioctl_evtchn_bind_unbound_port {
  63         unsigned int remote_domain;
  64 };
  65
  66 /*
  67  * Unbind previously allocated @port.
  68  */
  69 #define IOCTL_EVTCHN_UNBIND                             \
  70         _IOC(_IOC_NONE, 'E', 3, sizeof(struct ioctl_evtchn_unbind))
  71 struct ioctl_evtchn_unbind {
  72         unsigned int port;
  73 };
  74
  75 /*
  76  * Unbind previously allocated @port.
  77  */
  78 #define IOCTL_EVTCHN_NOTIFY                             \
  79         _IOC(_IOC_NONE, 'E', 4, sizeof(struct ioctl_evtchn_notify))
  80 struct ioctl_evtchn_notify {
  81         unsigned int port;
  82 };
  83
  84 /* Clear and reinitialise the event buffer. Clear error condition. */
  85 #define IOCTL_EVTCHN_RESET                              \
  86         _IOC(_IOC_NONE, 'E', 5, 0)
  87
  88 #endif /* __LINUX_PUBLIC_EVTCHN_H__ */