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 */
41 static int ug_acpi_match(device_t, cfdata_t, void *);
42 static void ug_acpi_attach(device_t, device_t, void *);
43
44 CFATTACH_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
52 static const struct device_compatible_entry compat_data[] = {
53 { .compat = "ABT2005" }, /* uGuru 2005 */
54 DEVICE_COMPAT_EOL
55 };
56
57 static int
ug_acpi_match(device_t parent,cfdata_t match,void * aux)58 ug_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
65 static void
ug_acpi_attach(device_t parent,device_t self,void * aux)66 ug_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