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

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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");

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