/* $NetBSD: xenio3.h,v 1.4 2015/09/07 03:49:46 dholland Exp $ */
/******************************************************************************
* evtchn.h
*
* Interface to /dev/xen/evtchn.
*
* Copyright (c) 2003-2005, K A Fraser
*
* This file may be distributed separately from the Linux kernel, or
* incorporated into other software packages, subject to the following license:
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this source file (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy, modify,
* merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/

#ifndef __XEN_XENIO3_H__
#define __XEN_XENIO3_H__

#include <sys/ioccom.h>

/*
* Bind a fresh port to VIRQ @virq.
* Return allocated port.
*/
#define IOCTL_EVTCHN_BIND_VIRQ                          \
       _IOWR('E', 4, struct ioctl_evtchn_bind_virq)
struct ioctl_evtchn_bind_virq {
       unsigned int virq;
       unsigned int port;
};

/*
* Bind a fresh port to remote <@remote_domain, @remote_port>.
* Return allocated port.
*/
#define IOCTL_EVTCHN_BIND_INTERDOMAIN                   \
       _IOWR('E', 5, struct ioctl_evtchn_bind_interdomain)
struct ioctl_evtchn_bind_interdomain {
       unsigned int remote_domain, remote_port;
       unsigned int port;
};

/*
* Allocate a fresh port for binding to @remote_domain.
* Return allocated port.
*/
#define IOCTL_EVTCHN_BIND_UNBOUND_PORT                  \
       _IOWR('E', 6, struct ioctl_evtchn_bind_unbound_port)
struct ioctl_evtchn_bind_unbound_port {
       unsigned int remote_domain;
       unsigned int port;
};

/*
* Unbind previously allocated @port.
*/
#define IOCTL_EVTCHN_UNBIND                             \
       _IOW('E', 7, struct ioctl_evtchn_unbind)
struct ioctl_evtchn_unbind {
       unsigned int port;
};

/*
* Send event to previously allocated @port.
*/
#define IOCTL_EVTCHN_NOTIFY                             \
       _IOW('E', 8, struct ioctl_evtchn_notify)
struct ioctl_evtchn_notify {
       unsigned int port;
};

/* Clear and reinitialise the event buffer. Clear error condition. */
#define IOCTL_EVTCHN_RESET                              \
       _IO('E', 9)

#endif /* __XEN_XENIO3_H__ */