attimer_acpi.c revision 1.1 
1/* $NetBSD: attimer_acpi.c,v 1.1 2005/03/25 23:06:19 cube Exp $ */
2
3/*
4 * Copyright (c) 2005 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Juan Romero Pardines <xtraeme@NetBSD.org> and Quentin Garnier.
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 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *      This product includes software developed by the NetBSD
21 *      Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39/*
40 * Copyright (c) 2002 Jared D. McNeill <jmcneill@invisible.ca>
41 * All rights reserved.
42 *
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
45 * are met:
46 * 1. Redistributions of source code must retain the above copyright
47 *    notice, this list of conditions and the following disclaimer.
48 * 2. The name of the author may not be used to endorse or promote products
49 *    derived from this software without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
52 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
53 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
54 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
55 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
56 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
57 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
58 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
59 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
61 * SUCH DAMAGE.
62 */
63
64/*
65 * ACPI attimer(4) attachment based on lpt_acpi.c by Jared D. McNeill.
66 */
67
68#include <sys/cdefs.h>
69__KERNEL_RCSID(0, "$NetBSD: attimer_acpi.c,v 1.1 2005/03/25 23:06:19 cube Exp $");
70
71#include <sys/param.h>
72#include <sys/systm.h>
73#include <sys/errno.h>
74#include <sys/ioctl.h>
75#include <sys/device.h>
76#include <sys/proc.h>
77
78#include <machine/bus.h>
79
80#include <dev/acpi/acpica.h>
81#include <dev/acpi/acpireg.h>
82#include <dev/acpi/acpivar.h>
83
84#include <dev/ic/attimervar.h>
85
86static int	attimer_acpi_match(struct device *, struct cfdata *, void *);
87static void	attimer_acpi_attach(struct device *, struct device *, void *);
88
89CFATTACH_DECL(attimer_acpi, sizeof(struct attimer_softc), attimer_acpi_match,
90    attimer_acpi_attach, NULL, NULL);
91
92/*
93 * Supported device IDs
94 */
95
96static const char * const attimer_acpi_ids[] = {
97	"PNP0100",	/* AT Timer */
98	NULL
99};
100
101/*
102 * attimer_acpi_match: autoconf(9) match routine
103 */
104static int
105attimer_acpi_match(struct device *parent, struct cfdata *match, void *aux)
106{
107	struct acpi_attach_args *aa = aux;
108
109	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
110		return 0;
111
112	return acpi_match_hid(aa->aa_node->ad_devinfo, attimer_acpi_ids);
113}
114
115/*
116 * attimer_acpi_attach: autoconf(9) attach routine
117 */
118static void
119attimer_acpi_attach(struct device *parent, struct device *self, void *aux)
120{
121	struct attimer_softc *sc = (struct attimer_softc *)self;
122	struct acpi_attach_args *aa = aux;
123	struct acpi_resources res;
124	struct acpi_io *io;
125	ACPI_STATUS rv;
126
127	printf(": AT Timer\n");
128
129	/* parse resources */
130	rv = acpi_resource_parse(&sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
131	    &res, &acpi_resource_parse_ops_default);
132	if (ACPI_FAILURE(rv))
133		return;
134
135	/* find our i/o registers */
136	io = acpi_res_io(&res, 0);
137	if (io == NULL) {
138		printf("%s: unable to find i/o register resource\n",
139		    sc->sc_dev.dv_xname);
140		goto out;
141	}
142
143	sc->sc_iot = aa->aa_iot;
144	if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length,
145		    0, &sc->sc_ioh)) {
146		printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
147		goto out;
148	}
149
150	attimer_attach(sc);
151
152 out:
153	acpi_resource_cleanup(&res);
154}
155