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105 lines
3.5 KiB
C
105 lines
3.5 KiB
C
4 years ago
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/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR MIT) */
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/******************************************************************************
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* evtchn.h
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*
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* Interface to /dev/xen/evtchn.
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*
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* Copyright (c) 2003-2005, K A Fraser
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation; or, when distributed
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* separately from the Linux kernel or incorporated into other
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* software packages, subject to the following license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this source file (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy, modify,
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* merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef __LINUX_PUBLIC_EVTCHN_H__
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#define __LINUX_PUBLIC_EVTCHN_H__
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/*
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* Bind a fresh port to VIRQ @virq.
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* Return allocated port.
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*/
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#define IOCTL_EVTCHN_BIND_VIRQ \
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_IOC(_IOC_NONE, 'E', 0, sizeof(struct ioctl_evtchn_bind_virq))
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struct ioctl_evtchn_bind_virq {
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unsigned int virq;
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};
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/*
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* Bind a fresh port to remote <@remote_domain, @remote_port>.
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* Return allocated port.
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*/
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#define IOCTL_EVTCHN_BIND_INTERDOMAIN \
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_IOC(_IOC_NONE, 'E', 1, sizeof(struct ioctl_evtchn_bind_interdomain))
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struct ioctl_evtchn_bind_interdomain {
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unsigned int remote_domain, remote_port;
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};
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/*
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* Allocate a fresh port for binding to @remote_domain.
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* Return allocated port.
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*/
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#define IOCTL_EVTCHN_BIND_UNBOUND_PORT \
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_IOC(_IOC_NONE, 'E', 2, sizeof(struct ioctl_evtchn_bind_unbound_port))
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struct ioctl_evtchn_bind_unbound_port {
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unsigned int remote_domain;
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};
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/*
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* Unbind previously allocated @port.
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*/
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#define IOCTL_EVTCHN_UNBIND \
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_IOC(_IOC_NONE, 'E', 3, sizeof(struct ioctl_evtchn_unbind))
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struct ioctl_evtchn_unbind {
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unsigned int port;
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};
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/*
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* Unbind previously allocated @port.
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*/
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#define IOCTL_EVTCHN_NOTIFY \
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_IOC(_IOC_NONE, 'E', 4, sizeof(struct ioctl_evtchn_notify))
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struct ioctl_evtchn_notify {
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unsigned int port;
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};
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/* Clear and reinitialise the event buffer. Clear error condition. */
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#define IOCTL_EVTCHN_RESET \
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_IOC(_IOC_NONE, 'E', 5, 0)
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/*
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* Restrict this file descriptor so that it can only be used to bind
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* new interdomain events from one domain.
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*
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* Once a file descriptor has been restricted it cannot be
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* de-restricted, and must be closed and re-opened. Event channels
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* which were bound before restricting remain bound afterwards, and
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* can be notified as usual.
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*/
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#define IOCTL_EVTCHN_RESTRICT_DOMID \
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_IOC(_IOC_NONE, 'E', 6, sizeof(struct ioctl_evtchn_restrict_domid))
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struct ioctl_evtchn_restrict_domid {
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domid_t domid;
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};
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#endif /* __LINUX_PUBLIC_EVTCHN_H__ */
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