1 /* $NetBSD: mcclock_ioasic.c,v 1.24 2015/06/09 20:23:53 matt 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 1.24 2015/06/09 20:23:53 matt 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
45 static int mcclock_ioasic_match(device_t, cfdata_t, void *);
46 static void mcclock_ioasic_attach(device_t, device_t, void *);
47
48 CFATTACH_DECL_NEW(mcclock_ioasic, sizeof (struct mcclock_pad32_softc),
49 mcclock_ioasic_match, mcclock_ioasic_attach, NULL, NULL);
50
51 static int
mcclock_ioasic_match(device_t parent,cfdata_t cf,void * aux)52 mcclock_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
65 static void
mcclock_ioasic_attach(device_t parent,device_t self,void * aux)66 mcclock_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