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e2be04c7 | 1 | /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR MIT) */ |
f7116284 IC |
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)) | |
43 | struct 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)) | |
53 | struct 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)) | |
63 | struct 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)) | |
72 | struct 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)) | |
81 | struct 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 | ||
fbc872c3 DV |
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)) | |
100 | struct ioctl_evtchn_restrict_domid { | |
101 | domid_t domid; | |
102 | }; | |
103 | ||
f7116284 | 104 | #endif /* __LINUX_PUBLIC_EVTCHN_H__ */ |