cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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evtchn.h (3553B)

      1/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR MIT) */
      2/******************************************************************************
      3 * evtchn.h
      4 *
      5 * Interface to /dev/xen/evtchn.
      6 *
      7 * Copyright (c) 2003-2005, K A Fraser
      8 *
      9 * This program is free software; you can redistribute it and/or
     10 * modify it under the terms of the GNU General Public License version 2
     11 * as published by the Free Software Foundation; or, when distributed
     12 * separately from the Linux kernel or incorporated into other
     13 * software packages, subject to the following license:
     14 *
     15 * Permission is hereby granted, free of charge, to any person obtaining a copy
     16 * of this source file (the "Software"), to deal in the Software without
     17 * 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 to
     20 * the following conditions:
     21 *
     22 * The above copyright notice and this permission notice shall be included in
     23 * all copies or substantial portions of the Software.
     24 *
     25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     26 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     27 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     28 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     29 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     30 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
     31 * 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 bind
     91 * new interdomain events from one domain.
     92 *
     93 * Once a file descriptor has been restricted it cannot be
     94 * de-restricted, and must be closed and re-opened.  Event channels
     95 * which were bound before restricting remain bound afterwards, and
     96 * 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#endif /* __LINUX_PUBLIC_EVTCHN_H__ */