sys/arch/xen/include/xenio3.h

   1 /* $NetBSD: xenio3.h,v 1.1 2006/05/07 10:18:28 bouyer Exp $ */
   2 /******************************************************************************
   3  * evtchn.h
   4  *
   5  * Interface to /dev/xen/evtchn.
   6  *
   7  * Copyright (c) 2003-2005, K A Fraser
   8  *
   9  * This file may be distributed separately from the Linux kernel, or
  10  * incorporated into other software packages, subject to the following license:
  11  *
  12  * Permission is hereby granted, free of charge, to any person obtaining a copy
  13  * of this source file (the "Software"), to deal in the Software without
  14  * restriction, including without limitation the rights to use, copy, modify,
  15  * merge, publish, distribute, sublicense, and/or sell copies of the Software,
  16  * and to permit persons to whom the Software is furnished to do so, subject to
  17  * the following conditions:
  18  *
  19  * The above copyright notice and this permission notice shall be included in
  20  * all copies or substantial portions of the Software.
  21  *
  22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  23  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  25  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  26  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  27  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  28  * IN THE SOFTWARE.
  29  */
  30
  31 #ifndef __XEN_XENIO_H__
  32 #define __XEN_XENIO_H__
  33
  34 /*
  35  * Bind a fresh port to VIRQ @virq.
  36  * Return allocated port.
  37  */
  38 #define IOCTL_EVTCHN_BIND_VIRQ                          \
  39         _IOWR('E', 4, struct ioctl_evtchn_bind_virq)
  40 struct ioctl_evtchn_bind_virq {
  41         unsigned int virq;
  42         unsigned int port;
  43 };
  44
  45 /*
  46  * Bind a fresh port to remote <@remote_domain, @remote_port>.
  47  * Return allocated port.
  48  */
  49 #define IOCTL_EVTCHN_BIND_INTERDOMAIN                   \
  50         _IOWR('E', 5, struct ioctl_evtchn_bind_interdomain)
  51 struct ioctl_evtchn_bind_interdomain {
  52         unsigned int remote_domain, remote_port;
  53         unsigned int 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         _IOWR('E', 6, struct ioctl_evtchn_bind_unbound_port)
  62 struct ioctl_evtchn_bind_unbound_port {
  63         unsigned int remote_domain;
  64         unsigned int port;
  65 };
  66
  67 /*
  68  * Unbind previously allocated @port.
  69  */
  70 #define IOCTL_EVTCHN_UNBIND                             \
  71         _IOW('E', 7, struct ioctl_evtchn_unbind)
  72 struct ioctl_evtchn_unbind {
  73         unsigned int port;
  74 };
  75
  76 /*
  77  * Send event to previously allocated @port.
  78  */
  79 #define IOCTL_EVTCHN_NOTIFY                             \
  80         _IOW('E', 8, struct ioctl_evtchn_notify)
  81 struct ioctl_evtchn_notify {
  82         unsigned int port;
  83 };
  84
  85 /* Clear and reinitialise the event buffer. Clear error condition. */
  86 #define IOCTL_EVTCHN_RESET                              \
  87         _IO('E', 9)
  88
  89 #endif /* __XEN_XENIO_H__ */