1 /* $NetBSD: mcclock_jazzio.c,v 1.13 2011/07/01 19:25:42 dyoung Exp $ */
2 /* $OpenBSD: clock_mc.c,v 1.9 1998/03/16 09:38:26 pefo Exp $ */
3 /* NetBSD: clock_mc.c,v 1.2 1995/06/28 04:30:30 cgd Exp */
4
5 /*
6 * Copyright (c) 1988 University of Utah.
7 * Copyright (c) 1992, 1993
8 * The Regents of the University of California. All rights reserved.
9 *
10 * This code is derived from software contributed to Berkeley by
11 * the Systems Programming Group of the University of Utah Computer
12 * Science Department and Ralph Campbell.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 * 3. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * from: Utah Hdr: clock.c 1.18 91/01/21
39 *
40 * @(#)clock.c 8.1 (Berkeley) 6/10/93
41 */
42
43 #include <sys/cdefs.h>
44 __KERNEL_RCSID(0, "$NetBSD: mcclock_jazzio.c,v 1.13 2011/07/01 19:25:42 dyoung Exp $");
45
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/device.h>
49
50 #include <machine/autoconf.h>
51 #include <sys/bus.h>
52
53 #include <dev/clock_subr.h>
54
55 #include <dev/ic/mc146818reg.h>
56 #include <dev/ic/mc146818var.h>
57
58 #include <arc/jazz/jazziovar.h>
59 #include <arc/jazz/mcclock_jazziovar.h>
60
61 int mcclock_jazzio_match(device_t, cfdata_t, void *);
62 void mcclock_jazzio_attach(device_t, device_t, void *);
63
64 CFATTACH_DECL_NEW(mcclock_jazzio, sizeof(struct mc146818_softc),
65 mcclock_jazzio_match, mcclock_jazzio_attach, NULL, NULL);
66
67 struct mcclock_jazzio_config *mcclock_jazzio_conf = NULL;
68 static int mcclock_jazzio_found = 0;
69
70 int
mcclock_jazzio_match(device_t parent,cfdata_t cf,void * aux)71 mcclock_jazzio_match(device_t parent, cfdata_t cf, void *aux)
72 {
73 struct jazzio_attach_args *ja = aux;
74
75 /* make sure that we're looking for this type of device. */
76 if (strcmp(ja->ja_name, "dallas_rtc") != 0)
77 return 0;
78
79 if (mcclock_jazzio_found)
80 return 0;
81
82 return 1;
83 }
84
85 void
mcclock_jazzio_attach(device_t parent,device_t self,void * aux)86 mcclock_jazzio_attach(device_t parent, device_t self, void *aux)
87 {
88 struct mc146818_softc *sc = device_private(self);
89 struct jazzio_attach_args *ja = aux;
90
91 if (mcclock_jazzio_conf == NULL)
92 panic("mcclock_jazzio_conf isn't initialized");
93
94 sc->sc_dev = self;
95 sc->sc_bst = ja->ja_bust;
96 if (bus_space_map(sc->sc_bst,
97 ja->ja_addr, mcclock_jazzio_conf->mjc_iosize, 0, &sc->sc_bsh)) {
98 aprint_error(": unable to map I/O space\n");
99 return;
100 }
101
102 sc->sc_year0 = 1980;
103 sc->sc_mcread = mcclock_jazzio_conf->mjc_mc_read;
104 sc->sc_mcwrite = mcclock_jazzio_conf->mjc_mc_write;
105
106 mc146818_attach(sc);
107
108 aprint_normal("\n");
109
110 /* Turn interrupts off, just in case. */
111 (*sc->sc_mcwrite)(sc, MC_REGB, MC_REGB_BINARY | MC_REGB_24HR);
112
113 mcclock_jazzio_found = 1;
114 }
115