1/*-
2 * Copyright (c) 2004 Mark R V Murray
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 */
27
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: head/sys/dev/io/iodev.c 202097 2010-01-11 18:10:13Z marcel $");
30
31#include <sys/param.h>
32#include <sys/conf.h>
33#include <sys/fcntl.h>
34#include <sys/kernel.h>
35#include <sys/lock.h>
36#include <sys/malloc.h>
37#include <sys/module.h>
38#include <sys/mutex.h>
39#include <sys/proc.h>
40#include <sys/signalvar.h>
41#include <sys/systm.h>
42#include <sys/uio.h>
43
44#include <vm/vm.h>
45#include <vm/pmap.h>
46
47#include <machine/iodev.h>
48
49static struct cdev *iodev;
50
51static struct cdevsw io_cdevsw = {
52 .d_version = D_VERSION,
53 .d_open = ioopen,
54 .d_close = ioclose,
55 .d_ioctl = ioioctl,
56 .d_name = "io",
57};
58
59/* ARGSUSED */
60static int
61io_modevent(module_t mod __unused, int type, void *data __unused)
62{
63 switch(type) {
64 case MOD_LOAD:
65 if (bootverbose)
66 printf("io: <I/O>\n");
67 iodev = make_dev(&io_cdevsw, 0,
68 UID_ROOT, GID_WHEEL, 0600, "io");
69 break;
70
71 case MOD_UNLOAD:
72 destroy_dev(iodev);
73 break;
74
75 case MOD_SHUTDOWN:
76 break;
77
78 default:
79 return(EOPNOTSUPP);
80 break;
81
82 }
83
84 return (0);
85}
86
87DEV_MODULE(io, io_modevent, NULL);
88MODULE_VERSION(io, 1);