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1/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR MIT) */2/******************************************************************************3 * evtchn.h4 *5 * Interface to /dev/xen/evtchn.6 *7 * Copyright (c) 2003-2005, K A Fraser8 *9 * This program is free software; you can redistribute it and/or10 * modify it under the terms of the GNU General Public License version 211 * as published by the Free Software Foundation; or, when distributed12 * separately from the Linux kernel or incorporated into other13 * software packages, subject to the following license:14 *15 * Permission is hereby granted, free of charge, to any person obtaining a copy16 * of this source file (the "Software"), to deal in the Software without17 * restriction, including without limitation the rights to use, copy, modify,18 * merge, publish, distribute, sublicense, and/or sell copies of the Software,19 * and to permit persons to whom the Software is furnished to do so, subject to20 * the following conditions:21 *22 * The above copyright notice and this permission notice shall be included in23 * all copies or substantial portions of the Software.24 *25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR26 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,27 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE28 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER29 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING30 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS31 * IN THE SOFTWARE.32 */33 34#ifndef __LINUX_PUBLIC_EVTCHN_H__35#define __LINUX_PUBLIC_EVTCHN_H__36 37/*38 * Bind a fresh port to VIRQ @virq.39 * Return allocated port.40 */41#define IOCTL_EVTCHN_BIND_VIRQ \42 _IOC(_IOC_NONE, 'E', 0, sizeof(struct ioctl_evtchn_bind_virq))43struct ioctl_evtchn_bind_virq {44 unsigned int virq;45};46 47/*48 * Bind a fresh port to remote <@remote_domain, @remote_port>.49 * Return allocated port.50 */51#define IOCTL_EVTCHN_BIND_INTERDOMAIN \52 _IOC(_IOC_NONE, 'E', 1, sizeof(struct ioctl_evtchn_bind_interdomain))53struct ioctl_evtchn_bind_interdomain {54 unsigned int remote_domain, remote_port;55};56 57/*58 * Allocate a fresh port for binding to @remote_domain.59 * Return allocated port.60 */61#define IOCTL_EVTCHN_BIND_UNBOUND_PORT \62 _IOC(_IOC_NONE, 'E', 2, sizeof(struct ioctl_evtchn_bind_unbound_port))63struct ioctl_evtchn_bind_unbound_port {64 unsigned int remote_domain;65};66 67/*68 * Unbind previously allocated @port.69 */70#define IOCTL_EVTCHN_UNBIND \71 _IOC(_IOC_NONE, 'E', 3, sizeof(struct ioctl_evtchn_unbind))72struct ioctl_evtchn_unbind {73 unsigned int port;74};75 76/*77 * Unbind previously allocated @port.78 */79#define IOCTL_EVTCHN_NOTIFY \80 _IOC(_IOC_NONE, 'E', 4, sizeof(struct ioctl_evtchn_notify))81struct 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 _IOC(_IOC_NONE, 'E', 5, 0)88 89/*90 * Restrict this file descriptor so that it can only be used to bind91 * new interdomain events from one domain.92 *93 * Once a file descriptor has been restricted it cannot be94 * de-restricted, and must be closed and re-opened. Event channels95 * which were bound before restricting remain bound afterwards, and96 * can be notified as usual.97 */98#define IOCTL_EVTCHN_RESTRICT_DOMID \99 _IOC(_IOC_NONE, 'E', 6, sizeof(struct ioctl_evtchn_restrict_domid))100struct ioctl_evtchn_restrict_domid {101 domid_t domid;102};103 104/*105 * Bind statically allocated @port.106 */107#define IOCTL_EVTCHN_BIND_STATIC \108 _IOC(_IOC_NONE, 'E', 7, sizeof(struct ioctl_evtchn_bind))109struct ioctl_evtchn_bind {110 unsigned int port;111};112 113#endif /* __LINUX_PUBLIC_EVTCHN_H__ */114