/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR MIT) */
/******************************************************************************
* evtchn . h
*
* Interface to / dev / xen / evtchn .
*
* Copyright ( c ) 2003 - 2005 , K A Fraser
*
* This program is free software ; you can redistribute it and / or
* modify it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation ; or , when 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 __LINUX_PUBLIC_EVTCHN_H__
#define __LINUX_PUBLIC_EVTCHN_H__
/*
* Bind a fresh port to VIRQ @ virq .
* Return allocated port .
*/
#define IOCTL_EVTCHN_BIND_VIRQ \
_IOC(_IOC_NONE, 'E' , 0 , sizeof (struct ioctl_evtchn_bind_virq))
struct ioctl_evtchn_bind_virq {
unsigned int virq;
};
/*
* Bind a fresh port to remote < @ remote_domain , @ remote_port > .
* Return allocated port .
*/
#define IOCTL_EVTCHN_BIND_INTERDOMAIN \
_IOC(_IOC_NONE, 'E' , 1 , sizeof (struct ioctl_evtchn_bind_interdomain))
struct ioctl_evtchn_bind_interdomain {
unsigned int remote_domain, remote_port;
};
/*
* Allocate a fresh port for binding to @ remote_domain .
* Return allocated port .
*/
#define IOCTL_EVTCHN_BIND_UNBOUND_PORT \
_IOC(_IOC_NONE, 'E' , 2 , sizeof (struct ioctl_evtchn_bind_unbound_port))
struct ioctl_evtchn_bind_unbound_port {
unsigned int remote_domain;
};
/*
* Unbind previously allocated @ port .
*/
#define IOCTL_EVTCHN_UNBIND \
_IOC(_IOC_NONE, 'E' , 3 , sizeof (struct ioctl_evtchn_unbind))
struct ioctl_evtchn_unbind {
unsigned int port;
};
/*
* Unbind previously allocated @ port .
*/
#define IOCTL_EVTCHN_NOTIFY \
_IOC(_IOC_NONE, 'E' , 4 , sizeof (struct ioctl_evtchn_notify))
struct ioctl_evtchn_notify {
unsigned int port;
};
/* Clear and reinitialise the event buffer. Clear error condition. */
#define IOCTL_EVTCHN_RESET \
_IOC(_IOC_NONE, 'E' , 5 , 0 )
/*
* Restrict this file descriptor so that it can only be used to bind
* new interdomain events from one domain .
*
* Once a file descriptor has been restricted it cannot be
* de - restricted , and must be closed and re - opened . Event channels
* which were bound before restricting remain bound afterwards , and
* can be notified as usual .
*/
#define IOCTL_EVTCHN_RESTRICT_DOMID \
_IOC(_IOC_NONE, 'E' , 6 , sizeof (struct ioctl_evtchn_restrict_domid))
struct ioctl_evtchn_restrict_domid {
domid_t domid;
};
/*
* Bind statically allocated @ port .
*/
#define IOCTL_EVTCHN_BIND_STATIC \
_IOC(_IOC_NONE, 'E' , 7 , sizeof (struct ioctl_evtchn_bind))
struct ioctl_evtchn_bind {
unsigned int port;
};
#endif /* __LINUX_PUBLIC_EVTCHN_H__ */
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(vorverarbeitet am 2026-10-01)
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