attimer_acpi.c revision 1.14 
1/* $NetBSD: attimer_acpi.c,v 1.14 2010/03/05 14:00:17 jruoho 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 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 *
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/*
33 * Copyright (c) 2002 Jared D. McNeill <jmcneill@invisible.ca>
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 *    notice, this list of conditions and the following disclaimer.
41 * 2. The name of the author may not be used to endorse or promote products
42 *    derived from this software without specific prior written permission.
43 *
44 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
45 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
46 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
47 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
48 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
49 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
50 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
51 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
52 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
53 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
54 * SUCH DAMAGE.
55 */
56
57/*
58 * ACPI attimer(4) attachment based on lpt_acpi.c by Jared D. McNeill.
59 */
60
61#include <sys/cdefs.h>
62__KERNEL_RCSID(0, "$NetBSD: attimer_acpi.c,v 1.14 2010/03/05 14:00:17 jruoho Exp $");
63
64#include <sys/param.h>
65#include <sys/device.h>
66#include <sys/systm.h>
67
68#include <dev/acpi/acpivar.h>
69
70#include <dev/ic/attimervar.h>
71
72static int	attimer_acpi_match(device_t, cfdata_t, void *);
73static void	attimer_acpi_attach(device_t, device_t, void *);
74
75CFATTACH_DECL3_NEW(attimer_acpi, sizeof(struct attimer_softc),
76    attimer_acpi_match, attimer_acpi_attach, attimer_detach, NULL, NULL, NULL,
77    DVF_DETACH_SHUTDOWN);
78
79/*
80 * Supported device IDs
81 */
82
83static const char * const attimer_acpi_ids[] = {
84	"PNP0100",	/* AT Timer */
85	NULL
86};
87
88/*
89 * attimer_acpi_match: autoconf(9) match routine
90 */
91static int
92attimer_acpi_match(device_t parent, cfdata_t match, void *aux)
93{
94	struct acpi_attach_args *aa = aux;
95
96	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
97		return 0;
98
99	return acpi_match_hid(aa->aa_node->ad_devinfo, attimer_acpi_ids);
100}
101
102/*
103 * attimer_acpi_attach: autoconf(9) attach routine
104 */
105static void
106attimer_acpi_attach(device_t parent, device_t self, void *aux)
107{
108	struct attimer_softc *sc = device_private(self);
109	struct acpi_attach_args *aa = aux;
110	struct acpi_resources res;
111	struct acpi_io *io;
112	ACPI_STATUS rv;
113
114	sc->sc_dev = self;
115
116	/* parse resources */
117	rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
118	    &res, &acpi_resource_parse_ops_default);
119	if (ACPI_FAILURE(rv))
120		return;
121
122	/* find our i/o registers */
123	io = acpi_res_io(&res, 0);
124	if (io == NULL) {
125		aprint_error_dev(self,
126		    "unable to find i/o register resource\n");
127		goto out;
128	}
129
130	sc->sc_iot = aa->aa_iot;
131	sc->sc_size = io->ar_length;
132	if (bus_space_map(sc->sc_iot, io->ar_base, sc->sc_size,
133		    0, &sc->sc_ioh) != 0) {
134		aprint_error_dev(self, "can't map i/o space\n");
135		goto out;
136	}
137
138	attimer_attach(sc);
139
140 out:
141	acpi_resource_cleanup(&res);
142}
143