direct-io.hg

view linux-2.6-xen-sparse/include/xen/public/evtchn.h @ 11672:7e79259c2c17

[LINUX] Make evtchn device use a dynamic minor number.

Also update the code in tools to create the device node if udev fails.
The tools now read the sysfs system to find the minor number needed.

Original patch from Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
author kfraser@localhost.localdomain
date Fri Sep 29 14:20:52 2006 +0100 (2006-09-29)
parents 48c0f5489d44
children
line source
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 */
33 #ifndef __LINUX_PUBLIC_EVTCHN_H__
34 #define __LINUX_PUBLIC_EVTCHN_H__
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 };
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 };
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 };
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 };
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 };
84 /* Clear and reinitialise the event buffer. Clear error condition. */
85 #define IOCTL_EVTCHN_RESET \
86 _IOC(_IOC_NONE, 'E', 5, 0)
88 #endif /* __LINUX_PUBLIC_EVTCHN_H__ */