ug_acpi.c revision 1.3 
1/* $NetBSD: ug_acpi.c,v 1.3 2007/10/19 11:59:36 ad Exp $ */
2
3/*
4 * Copyright (c) 2007 Mihai Chelaru <kefren@netbsd.ro>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. The name of the author may not be used to endorse or promote products
13 *    derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__KERNEL_RCSID(0, "$NetBSD: ug_acpi.c,v 1.3 2007/10/19 11:59:36 ad Exp $");
30
31#include <sys/param.h>
32#include <sys/systm.h>
33#include <sys/errno.h>
34#include <sys/ioctl.h>
35#include <sys/syslog.h>
36#include <sys/device.h>
37#include <sys/proc.h>
38#include <sys/envsys.h>
39
40#include <sys/bus.h>
41
42#include <dev/acpi/acpica.h>
43#include <dev/acpi/acpireg.h>
44#include <dev/acpi/acpivar.h>
45
46#include <dev/sysmon/sysmonvar.h>
47
48#include <dev/ic/ugreg.h>
49#include <dev/ic/ugvar.h>
50
51/* autoconf(9) functions */
52static int	ug_acpi_match(struct device *, struct cfdata *, void *);
53static void	ug_acpi_attach(struct device *, struct device *, void *);
54
55CFATTACH_DECL(ug_acpi, sizeof(struct ug_softc), ug_acpi_match,
56    ug_acpi_attach, NULL, NULL);
57
58/*
59 * Supported devices
60 * XXX: only uGuru 2005 for now
61 */
62
63static const char* const ug_acpi_ids[] = {
64	"ABT2005",	/* uGuru 2005 */
65	NULL
66};
67
68static int
69ug_acpi_match(struct device *parent, struct cfdata *match,
70    void *aux)
71{
72	struct acpi_attach_args *aa = aux;
73
74	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
75		return 0;
76
77	return acpi_match_hid(aa->aa_node->ad_devinfo, ug_acpi_ids);
78}
79
80static void
81ug_acpi_attach(struct device *parent, struct device *self, void *aux)
82{
83	struct ug_softc *sc = (struct ug_softc*)self;
84	struct acpi_attach_args *aa = aux;
85	struct acpi_resources res;
86	struct acpi_io *io;
87	bus_space_handle_t ioh;
88	ACPI_STATUS rv;
89
90	aprint_naive("\n");
91	aprint_normal("\n");
92
93	/* parse resources */
94	rv = acpi_resource_parse(&sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
95	    &res, &acpi_resource_parse_ops_default);
96	if (ACPI_FAILURE(rv))
97		return;
98
99	/* find our i/o registers */
100	io = acpi_res_io(&res, 0);
101	if (io == NULL) {
102		aprint_error("%s: unable to find i/o register resource\n",
103		    sc->sc_dev.dv_xname);
104		acpi_resource_cleanup(&res);
105		return;
106	}
107
108	if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length,
109	    0, &ioh)) {
110		aprint_error("%s: can't map i/o space\n",
111		    sc->sc_dev.dv_xname);
112		acpi_resource_cleanup(&res);
113		return;
114	}
115
116	aprint_normal("%s", sc->sc_dev.dv_xname);
117
118	sc->version = 2;	/* uGuru 2005 */
119	sc->sc_ioh = ioh;
120	sc->sc_iot = aa->aa_iot;
121	ug2_attach(sc);
122
123	acpi_resource_cleanup(&res);
124}
125