1 /* $NetBSD: mcclock_ibus.c,v 1.19 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> /* RCS ID & Copyright macro defns */
31 __KERNEL_RCSID(0, "$NetBSD: mcclock_ibus.c,v 1.19 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/kernel.h>
37 #include <sys/systm.h>
38
39 #include <dev/clock_subr.h>
40
41 #include <dev/dec/mcclockvar.h>
42 #include <dev/dec/mcclock_pad32.h>
43
44 #include <pmax/ibus/ibusvar.h>
45
46 static int mcclock_ibus_match(device_t, cfdata_t, void *);
47 static void mcclock_ibus_attach(device_t, device_t, void *);
48
49 CFATTACH_DECL_NEW(mcclock_ibus, sizeof (struct mcclock_pad32_softc),
50 mcclock_ibus_match, mcclock_ibus_attach, NULL, NULL);
51
52 static int
mcclock_ibus_match(device_t parent,cfdata_t cf,void * aux)53 mcclock_ibus_match(device_t parent, cfdata_t cf, void *aux)
54 {
55 struct ibus_attach_args *ia = aux;
56
57 if (strcmp("mc146818", ia->ia_name) != 0)
58 return (0);
59
60 if (badaddr((void *)ia->ia_addr, sizeof(uint32_t)))
61 return (0);
62
63 return (1);
64 }
65
66 static void
mcclock_ibus_attach(device_t parent,device_t self,void * aux)67 mcclock_ibus_attach(device_t parent, device_t self, void *aux)
68 {
69 struct ibus_attach_args *ia = aux;
70 struct mcclock_pad32_softc *sc = device_private(self);
71
72 sc->sc_mcclock.sc_dev = self;
73 sc->sc_dp = (struct mcclock_pad32_clockdatum*)ia->ia_addr;
74
75 /* Attach MI driver, using busfns with TC-style register padding */
76 mcclock_attach(&sc->sc_mcclock, &mcclock_pad32_busfns);
77 }
78