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f7116284 IC |
1 | /****************************************************************************** |
2 | * evtchn.h | |
3 | * | |
4 | * Interface to /dev/xen/evtchn. | |
5 | * | |
6 | * Copyright (c) 2003-2005, K A Fraser | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License version 2 | |
10 | * as published by the Free Software Foundation; or, when distributed | |
11 | * separately from the Linux kernel or incorporated into other | |
12 | * software packages, subject to the following license: | |
13 | * | |
14 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
15 | * of this source file (the "Software"), to deal in the Software without | |
16 | * restriction, including without limitation the rights to use, copy, modify, | |
17 | * merge, publish, distribute, sublicense, and/or sell copies of the Software, | |
18 | * and to permit persons to whom the Software is furnished to do so, subject to | |
19 | * the following conditions: | |
20 | * | |
21 | * The above copyright notice and this permission notice shall be included in | |
22 | * all copies or substantial portions of the Software. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
25 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
27 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
28 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
29 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
30 | * IN THE SOFTWARE. | |
31 | */ | |
32 | ||
33 | #ifndef __LINUX_PUBLIC_EVTCHN_H__ | |
34 | #define __LINUX_PUBLIC_EVTCHN_H__ | |
35 | ||
36 | /* | |
37 | * Bind a fresh port to VIRQ @virq. | |
38 | * Return allocated port. | |
39 | */ | |
40 | #define IOCTL_EVTCHN_BIND_VIRQ \ | |
41 | _IOC(_IOC_NONE, 'E', 0, sizeof(struct ioctl_evtchn_bind_virq)) | |
42 | struct ioctl_evtchn_bind_virq { | |
43 | unsigned int virq; | |
44 | }; | |
45 | ||
46 | /* | |
47 | * Bind a fresh port to remote <@remote_domain, @remote_port>. | |
48 | * Return allocated port. | |
49 | */ | |
50 | #define IOCTL_EVTCHN_BIND_INTERDOMAIN \ | |
51 | _IOC(_IOC_NONE, 'E', 1, sizeof(struct ioctl_evtchn_bind_interdomain)) | |
52 | struct ioctl_evtchn_bind_interdomain { | |
53 | unsigned int remote_domain, remote_port; | |
54 | }; | |
55 | ||
56 | /* | |
57 | * Allocate a fresh port for binding to @remote_domain. | |
58 | * Return allocated port. | |
59 | */ | |
60 | #define IOCTL_EVTCHN_BIND_UNBOUND_PORT \ | |
61 | _IOC(_IOC_NONE, 'E', 2, sizeof(struct ioctl_evtchn_bind_unbound_port)) | |
62 | struct ioctl_evtchn_bind_unbound_port { | |
63 | unsigned int remote_domain; | |
64 | }; | |
65 | ||
66 | /* | |
67 | * Unbind previously allocated @port. | |
68 | */ | |
69 | #define IOCTL_EVTCHN_UNBIND \ | |
70 | _IOC(_IOC_NONE, 'E', 3, sizeof(struct ioctl_evtchn_unbind)) | |
71 | struct ioctl_evtchn_unbind { | |
72 | unsigned int port; | |
73 | }; | |
74 | ||
75 | /* | |
76 | * Unbind previously allocated @port. | |
77 | */ | |
78 | #define IOCTL_EVTCHN_NOTIFY \ | |
79 | _IOC(_IOC_NONE, 'E', 4, sizeof(struct ioctl_evtchn_notify)) | |
80 | struct ioctl_evtchn_notify { | |
81 | unsigned int port; | |
82 | }; | |
83 | ||
84 | /* Clear and reinitialise the event buffer. Clear error condition. */ | |
85 | #define IOCTL_EVTCHN_RESET \ | |
86 | _IOC(_IOC_NONE, 'E', 5, 0) | |
87 | ||
fbc872c3 DV |
88 | /* |
89 | * Restrict this file descriptor so that it can only be used to bind | |
90 | * new interdomain events from one domain. | |
91 | * | |
92 | * Once a file descriptor has been restricted it cannot be | |
93 | * de-restricted, and must be closed and re-opened. Event channels | |
94 | * which were bound before restricting remain bound afterwards, and | |
95 | * can be notified as usual. | |
96 | */ | |
97 | #define IOCTL_EVTCHN_RESTRICT_DOMID \ | |
98 | _IOC(_IOC_NONE, 'E', 6, sizeof(struct ioctl_evtchn_restrict_domid)) | |
99 | struct ioctl_evtchn_restrict_domid { | |
100 | domid_t domid; | |
101 | }; | |
102 | ||
f7116284 | 103 | #endif /* __LINUX_PUBLIC_EVTCHN_H__ */ |