1/*	$NetBSD: mcclock_ioasic.c,v 1.23 2011/06/04 01:43:56 tsutsui Exp $ */
2
3/*
4 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
5 * All rights reserved.
6 *
7 * Author: Chris G. Demetriou
8 *
9 * Permission to use, copy, modify and distribute this software and
10 * its documentation is hereby granted, provided that both the copyright
11 * notice and this permission notice appear in all copies of the
12 * software, derivative works or modified versions, and any portions
13 * thereof, and that both notices appear in supporting documentation.
14 *
15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
16 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
18 *
19 * Carnegie Mellon requests users of this software to return to
20 *
21 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
22 *  School of Computer Science
23 *  Carnegie Mellon University
24 *  Pittsburgh PA 15213-3890
25 *
26 * any improvements or extensions that they make and grant Carnegie the
27 * rights to redistribute these changes.
28 */
29
30#include <sys/cdefs.h>
31__KERNEL_RCSID(0, "$NetBSD: mcclock_ioasic.c,v 1.23 2011/06/04 01:43:56 tsutsui Exp $");
32
33#include <sys/param.h>
34#include <sys/cpu.h>
35#include <sys/device.h>
36#include <sys/systm.h>
37#include <dev/clock_subr.h>
38
39#include <dev/dec/mcclockvar.h>
40#include <dev/dec/mcclock_pad32.h>
41
42#include <dev/tc/tcvar.h>
43#include <dev/tc/ioasicvar.h>
44
45static int	mcclock_ioasic_match(device_t, cfdata_t, void *);
46static void	mcclock_ioasic_attach(device_t, device_t, void *);
47
48CFATTACH_DECL_NEW(mcclock_ioasic, sizeof (struct mcclock_pad32_softc),
49    mcclock_ioasic_match, mcclock_ioasic_attach, NULL, NULL);
50
51static int
52mcclock_ioasic_match(device_t parent, cfdata_t cf, void *aux)
53{
54	struct ioasicdev_attach_args *d = aux;
55
56	if (strcmp("mc146818", d->iada_modname) != 0)
57		return (0);
58
59	if (tc_badaddr(d->iada_addr))
60		return (0);
61
62	return (1);
63}
64
65static void
66mcclock_ioasic_attach(device_t parent, device_t self, void *aux)
67{
68	struct ioasicdev_attach_args *ioasicdev = aux;
69	struct mcclock_pad32_softc *sc = device_private(self);
70
71	sc->sc_mcclock.sc_dev = self;
72	sc->sc_dp = (struct mcclock_pad32_clockdatum *)ioasicdev->iada_addr;
73
74	/* Attach MI driver, using busfns with TC-style register padding */
75	mcclock_attach(&sc->sc_mcclock, &mcclock_pad32_busfns);
76}
77