| 1 |
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| 2 | |
| 3 | * evtchn.h
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| 4 | *
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| 5 | * Interface to /dev/xen/evtchn.
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| 6 | *
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| 7 | * Copyright (c) 2003-2005, K A Fraser
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| 8 | *
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| 9 | * This program is free software; you can redistribute it and/or
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| 10 | * modify it under the terms of the GNU General Public License version 2
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| 11 | * as published by the Free Software Foundation; or, when distributed
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| 12 | * separately from the Linux kernel or incorporated into other
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| 13 | * software packages, subject to the following license:
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| 14 | *
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| 15 | * Permission is hereby granted, free of charge, to any person obtaining a copy
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| 16 | * of this source file (the "Software"), to deal in the Software without
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| 17 | * restriction, including without limitation the rights to use, copy, modify,
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| 18 | * merge, publish, distribute, sublicense, and/or sell copies of the Software,
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| 19 | * and to permit persons to whom the Software is furnished to do so, subject to
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| 20 | * the following conditions:
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| 21 | *
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| 22 | * The above copyright notice and this permission notice shall be included in
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| 23 | * all copies or substantial portions of the Software.
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| 24 | *
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| 25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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| 26 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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| 27 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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| 28 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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| 29 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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| 30 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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| 31 | * IN THE SOFTWARE.
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| 32 |
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| 33 |
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| 34 | #ifndef __LINUX_PUBLIC_EVTCHN_H__
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| 35 | #define __LINUX_PUBLIC_EVTCHN_H__
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| 36 |
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| 37 | |
| 38 | * Bind a fresh port to VIRQ @virq.
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| 39 | * Return allocated port.
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| 40 |
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| 41 | #define IOCTL_EVTCHN_BIND_VIRQ \
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| 42 | _IOC(_IOC_NONE, 'E', 0, sizeof(struct ioctl_evtchn_bind_virq))
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| 43 | struct ioctl_evtchn_bind_virq {
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| 44 | unsigned int virq;
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| 45 | };
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| 46 |
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| 47 | |
| 48 | * Bind a fresh port to remote <@remote_domain, @remote_port>.
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| 49 | * Return allocated port.
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| 50 |
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| 51 | #define IOCTL_EVTCHN_BIND_INTERDOMAIN \
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| 52 | _IOC(_IOC_NONE, 'E', 1, sizeof(struct ioctl_evtchn_bind_interdomain))
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| 53 | struct ioctl_evtchn_bind_interdomain {
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| 54 | unsigned int remote_domain, remote_port;
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| 55 | };
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| 56 |
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| 57 | |
| 58 | * Allocate a fresh port for binding to @remote_domain.
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| 59 | * Return allocated port.
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| 60 |
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| 61 | #define IOCTL_EVTCHN_BIND_UNBOUND_PORT \
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| 62 | _IOC(_IOC_NONE, 'E', 2, sizeof(struct ioctl_evtchn_bind_unbound_port))
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| 63 | struct ioctl_evtchn_bind_unbound_port {
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| 64 | unsigned int remote_domain;
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| 65 | };
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| 66 |
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| 67 | |
| 68 | * Unbind previously allocated @port.
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| 69 |
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| 70 | #define IOCTL_EVTCHN_UNBIND \
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| 71 | _IOC(_IOC_NONE, 'E', 3, sizeof(struct ioctl_evtchn_unbind))
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| 72 | struct ioctl_evtchn_unbind {
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| 73 | unsigned int port;
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| 74 | };
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| 75 |
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| 76 | |
| 77 | * Unbind previously allocated @port.
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| 78 |
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| 79 | #define IOCTL_EVTCHN_NOTIFY \
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| 80 | _IOC(_IOC_NONE, 'E', 4, sizeof(struct ioctl_evtchn_notify))
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| 81 | struct ioctl_evtchn_notify {
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| 82 | unsigned int port;
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| 83 | };
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| 84 |
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| 85 |
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| 86 | #define IOCTL_EVTCHN_RESET \
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| 87 | _IOC(_IOC_NONE, 'E', 5, 0)
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| 88 |
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| 89 | |
| 90 | * Restrict this file descriptor so that it can only be used to bind
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| 91 | * new interdomain events from one domain.
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| 92 | *
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| 93 | * Once a file descriptor has been restricted it cannot be
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| 94 | * de-restricted, and must be closed and re-opened. Event channels
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| 95 | * which were bound before restricting remain bound afterwards, and
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| 96 | * can be notified as usual.
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| 97 |
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| 98 | #define IOCTL_EVTCHN_RESTRICT_DOMID \
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| 99 | _IOC(_IOC_NONE, 'E', 6, sizeof(struct ioctl_evtchn_restrict_domid))
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| 100 | struct ioctl_evtchn_restrict_domid {
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| 101 | domid_t domid;
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| 102 | };
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| 103 |
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| 104 | |
| 105 | * Bind statically allocated @port.
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| 106 |
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| 107 | #define IOCTL_EVTCHN_BIND_STATIC \
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| 108 | _IOC(_IOC_NONE, 'E', 7, sizeof(struct ioctl_evtchn_bind))
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| 109 | struct ioctl_evtchn_bind {
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| 110 | unsigned int port;
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| 111 | };
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| 112 |
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| 113 | #endif
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