1/*	$NetBSD: mkclock_ap.c,v 1.8 2008/03/29 14:34:13 tsutsui Exp $	*/
2
3/*-
4 * Copyright (c) 1996 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: mkclock_ap.c,v 1.8 2008/03/29 14:34:13 tsutsui Exp $");
34
35#include <sys/param.h>
36#include <sys/kernel.h>
37#include <sys/systm.h>
38#include <sys/device.h>
39
40#include <machine/cpu.h>
41#include <machine/bus.h>
42
43#include <dev/clock_subr.h>
44#include <dev/ic/mk48txxreg.h>
45#include <dev/ic/mk48txxvar.h>
46
47#include <newsmips/apbus/apbusvar.h>
48
49#define MKCLOCK_AP_STRIDE	2
50#define MKCLOCK_AP_OFFSET	\
51    ((MK48T02_CLKOFF + MK48TXX_ICSR) << MKCLOCK_AP_STRIDE)
52
53int  mkclock_ap_match(device_t, cfdata_t, void *);
54void mkclock_ap_attach(device_t, device_t, void *);
55static uint8_t mkclock_ap_nvrd(struct mk48txx_softc *, int);
56static void mkclock_ap_nvwr(struct mk48txx_softc *, int, uint8_t);
57
58CFATTACH_DECL_NEW(mkclock_ap, sizeof(struct mk48txx_softc),
59    mkclock_ap_match, mkclock_ap_attach, NULL, NULL);
60
61int
62mkclock_ap_match(device_t parent, cfdata_t cf, void *aux)
63{
64	struct apbus_attach_args *apa = aux;
65
66	if (strcmp("clock", apa->apa_name) != 0)
67		return 0;
68
69	return 1;
70}
71
72void
73mkclock_ap_attach(device_t parent, device_t self, void *aux)
74{
75	struct mk48txx_softc *sc = device_private(self);
76	struct apbus_attach_args *apa = aux;
77
78	sc->sc_dev = self;
79	aprint_normal(" slot%d addr 0x%lx", apa->apa_slotno, apa->apa_hwbase);
80	if (bus_space_map(sc->sc_bst, apa->apa_hwbase - MKCLOCK_AP_OFFSET,
81	    MK48T02_CLKSZ, 0, &sc->sc_bsh) != 0)
82		aprint_error(": can't map device space\n");
83
84	sc->sc_model = "mk48t02";
85	sc->sc_year0 = 1900;
86	sc->sc_nvrd = mkclock_ap_nvrd;
87	sc->sc_nvwr = mkclock_ap_nvwr;
88
89	mk48txx_attach(sc);
90
91	aprint_normal("\n");
92}
93
94static uint8_t
95mkclock_ap_nvrd(struct mk48txx_softc *sc, int off)
96{
97	uint8_t rv;
98
99	rv = bus_space_read_4(sc->sc_bst, sc->sc_bsh, off << MKCLOCK_AP_STRIDE);
100	return rv;
101}
102
103static void
104mkclock_ap_nvwr(struct mk48txx_softc *sc, int off, uint8_t v)
105{
106
107	bus_space_write_4(sc->sc_bst, sc->sc_bsh, off << MKCLOCK_AP_STRIDE, v);
108}
109