attimer_acpi.c revision 1.13 
1/* $NetBSD: attimer_acpi.c,v 1.13 2009/04/07 17:59:18 dyoung 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 1.13 2009/04/07 17:59:18 dyoung Exp $");
63
64#include <sys/param.h>
65#include <sys/systm.h>
66#include <sys/errno.h>
67#include <sys/ioctl.h>
68#include <sys/device.h>
69#include <sys/proc.h>
70
71#include <sys/bus.h>
72
73#include <dev/acpi/acpica.h>
74#include <dev/acpi/acpireg.h>
75#include <dev/acpi/acpivar.h>
76
77#include <dev/ic/attimervar.h>
78
79static int	attimer_acpi_match(device_t, cfdata_t, void *);
80static void	attimer_acpi_attach(device_t, device_t, void *);
81
82CFATTACH_DECL3_NEW(attimer_acpi, sizeof(struct attimer_softc),
83    attimer_acpi_match, attimer_acpi_attach, attimer_detach, NULL, NULL, NULL,
84    DVF_DETACH_SHUTDOWN);
85
86/*
87 * Supported device IDs
88 */
89
90static const char * const attimer_acpi_ids[] = {
91	"PNP0100",	/* AT Timer */
92	NULL
93};
94
95/*
96 * attimer_acpi_match: autoconf(9) match routine
97 */
98static int
99attimer_acpi_match(device_t parent, cfdata_t match, void *aux)
100{
101	struct acpi_attach_args *aa = aux;
102
103	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
104		return 0;
105
106	return acpi_match_hid(aa->aa_node->ad_devinfo, attimer_acpi_ids);
107}
108
109/*
110 * attimer_acpi_attach: autoconf(9) attach routine
111 */
112static void
113attimer_acpi_attach(device_t parent, device_t self, void *aux)
114{
115	struct attimer_softc *sc = device_private(self);
116	struct acpi_attach_args *aa = aux;
117	struct acpi_resources res;
118	struct acpi_io *io;
119	ACPI_STATUS rv;
120
121	sc->sc_dev = self;
122
123	/* parse resources */
124	rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
125	    &res, &acpi_resource_parse_ops_default);
126	if (ACPI_FAILURE(rv))
127		return;
128
129	/* find our i/o registers */
130	io = acpi_res_io(&res, 0);
131	if (io == NULL) {
132		aprint_error_dev(self,
133		    "unable to find i/o register resource\n");
134		goto out;
135	}
136
137	sc->sc_iot = aa->aa_iot;
138	sc->sc_size = io->ar_length;
139	if (bus_space_map(sc->sc_iot, io->ar_base, sc->sc_size,
140		    0, &sc->sc_ioh) != 0) {
141		aprint_error_dev(self, "can't map i/o space\n");
142		goto out;
143	}
144
145	attimer_attach(sc);
146
147 out:
148	acpi_resource_cleanup(&res);
149}
150