/* 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; }; #endif /* __LINUX_PUBLIC_EVTCHN_H__ */