1/* $NetBSD: ug_acpi.c,v 1.7 2021/01/29 15:49:55 thorpej 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 1.7 2021/01/29 15:49:55 thorpej Exp $");
30
31#include <sys/param.h>
32#include <sys/device.h>
33#include <sys/systm.h>
34
35#include <dev/acpi/acpivar.h>
36
37#include <dev/ic/ugreg.h>
38#include <dev/ic/ugvar.h>
39
40/* autoconf(9) functions */
41static int	ug_acpi_match(device_t, cfdata_t, void *);
42static void	ug_acpi_attach(device_t, device_t, void *);
43
44CFATTACH_DECL_NEW(ug_acpi, sizeof(struct ug_softc), ug_acpi_match,
45    ug_acpi_attach, NULL, NULL);
46
47/*
48 * Supported devices
49 * XXX: only uGuru 2005 for now
50 */
51
52static const struct device_compatible_entry compat_data[] = {
53	{ .compat = "ABT2005" },	/* uGuru 2005 */
54	DEVICE_COMPAT_EOL
55};
56
57static int
58ug_acpi_match(device_t parent, cfdata_t match, void *aux)
59{
60	struct acpi_attach_args *aa = aux;
61
62	return acpi_compatible_match(aa, compat_data);
63}
64
65static void
66ug_acpi_attach(device_t parent, device_t self, void *aux)
67{
68	struct ug_softc *sc = device_private(self);
69	struct acpi_attach_args *aa = aux;
70	struct acpi_resources res;
71	struct acpi_io *io;
72	bus_space_handle_t ioh;
73	ACPI_STATUS rv;
74
75	/* parse resources */
76	rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
77	    &res, &acpi_resource_parse_ops_default);
78	if (ACPI_FAILURE(rv))
79		return;
80
81	/* find our i/o registers */
82	io = acpi_res_io(&res, 0);
83	if (io == NULL) {
84		aprint_error_dev(self,
85		    "unable to find i/o register resource\n");
86		acpi_resource_cleanup(&res);
87		return;
88	}
89
90	if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length,
91	    0, &ioh)) {
92		aprint_error_dev(self, "can't map i/o space\n");
93		acpi_resource_cleanup(&res);
94		return;
95	}
96
97	aprint_normal("%s", device_xname(self));
98
99	sc->version = 2;	/* uGuru 2005 */
100	sc->sc_ioh = ioh;
101	sc->sc_iot = aa->aa_iot;
102	ug2_attach(self);
103
104	acpi_resource_cleanup(&res);
105}
106