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01: /******************************************************************************
02:  * evtchn.h
03:  *
04:  * Interface to /dev/xen/evtchn.
05:  *
06:  * Copyright (c) 2003-2005, K A Fraser
07:  *
08:  * This program is free software; you can redistribute it and/or
09:  * 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: 
88: #endif /* __LINUX_PUBLIC_EVTCHN_H__ */
89: 

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