ug_acpi.c revision 1.5 
1/* $NetBSD: ug_acpi.c,v 1.5 2009/02/17 12:46:01 jmcneill 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 1.5 2009/02/17 12:46:01 jmcneill 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(device_t, cfdata_t, void *);
53static void	ug_acpi_attach(device_t, device_t, void *);
54
55CFATTACH_DECL_NEW(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(device_t parent, cfdata_t match, void *aux)
70{
71	struct acpi_attach_args *aa = aux;
72
73	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
74		return 0;
75
76	return acpi_match_hid(aa->aa_node->ad_devinfo, ug_acpi_ids);
77}
78
79static void
80ug_acpi_attach(device_t parent, device_t self, void *aux)
81{
82	struct ug_softc *sc = device_private(self);
83	struct acpi_attach_args *aa = aux;
84	struct acpi_resources res;
85	struct acpi_io *io;
86	bus_space_handle_t ioh;
87	ACPI_STATUS rv;
88
89	/* parse resources */
90	rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
91	    &res, &acpi_resource_parse_ops_default);
92	if (ACPI_FAILURE(rv))
93		return;
94
95	/* find our i/o registers */
96	io = acpi_res_io(&res, 0);
97	if (io == NULL) {
98		aprint_error_dev(self,
99		    "unable to find i/o register resource\n");
100		acpi_resource_cleanup(&res);
101		return;
102	}
103
104	if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length,
105	    0, &ioh)) {
106		aprint_error_dev(self, "can't map i/o space\n");
107		acpi_resource_cleanup(&res);
108		return;
109	}
110
111	aprint_normal("%s", device_xname(self));
112
113	sc->version = 2;	/* uGuru 2005 */
114	sc->sc_ioh = ioh;
115	sc->sc_iot = aa->aa_iot;
116	ug2_attach(self);
117
118	acpi_resource_cleanup(&res);
119}
120