1 /* $NetBSD: pcppi_acpi.c,v 1.13 2021/01/29 15:49:55 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 2002 Jared D. McNeill <jmcneill@invisible.ca>
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 /*
29 * ACPI pcppi(4) attachment based on lpt_acpi.c by Jared D. McNeill.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: pcppi_acpi.c,v 1.13 2021/01/29 15:49:55 thorpej Exp $");
34
35 #include <sys/param.h>
36 #include <sys/device.h>
37
38 #include <dev/acpi/acpivar.h>
39
40 #include <dev/isa/pcppivar.h>
41
42 static int pcppi_acpi_match(device_t, cfdata_t, void *);
43 static void pcppi_acpi_attach(device_t, device_t, void *);
44
45 struct pcppi_acpi_softc {
46 struct pcppi_softc sc_pcppi;
47 };
48
49 CFATTACH_DECL_NEW(pcppi_acpi, sizeof(struct pcppi_acpi_softc),
50 pcppi_acpi_match, pcppi_acpi_attach, pcppi_detach, NULL);
51
52 /*
53 * Supported device IDs
54 */
55
56 static const struct device_compatible_entry compat_data[] = {
57 { .compat = "PNP0800" }, /* AT-style speaker sound */
58 DEVICE_COMPAT_EOL
59 };
60
61 /*
62 * pcppi_acpi_match: autoconf(9) match routine
63 */
64 static int
pcppi_acpi_match(device_t parent,cfdata_t match,void * aux)65 pcppi_acpi_match(device_t parent, cfdata_t match, void *aux)
66 {
67 struct acpi_attach_args *aa = aux;
68
69 return acpi_compatible_match(aa, compat_data);
70 }
71
72 /*
73 * pcppi_acpi_attach: autoconf(9) attach routine
74 */
75 static void
pcppi_acpi_attach(device_t parent,device_t self,void * aux)76 pcppi_acpi_attach(device_t parent, device_t self, void *aux)
77 {
78 struct pcppi_acpi_softc *asc = device_private(self);
79 struct pcppi_softc *sc = &asc->sc_pcppi;
80 struct acpi_attach_args *aa = aux;
81 struct acpi_resources res;
82 struct acpi_io *io;
83 ACPI_STATUS rv;
84
85 sc->sc_dv = self;
86
87 /* parse resources */
88 rv = acpi_resource_parse(sc->sc_dv, aa->aa_node->ad_handle, "_CRS",
89 &res, &acpi_resource_parse_ops_default);
90 if (ACPI_FAILURE(rv))
91 return;
92
93 /* find our i/o registers */
94 io = acpi_res_io(&res, 0);
95 if (io == NULL) {
96 aprint_error_dev(self,
97 "unable to find i/o register resource\n");
98 goto out;
99 }
100
101 sc->sc_iot = aa->aa_iot;
102 sc->sc_size = io->ar_length;
103 if (bus_space_map(sc->sc_iot, io->ar_base, sc->sc_size,
104 0, &sc->sc_ppi_ioh)) {
105 aprint_error_dev(self, "can't map i/o space\n");
106 goto out;
107 }
108
109 pcppi_attach(sc);
110
111 out:
112 acpi_resource_cleanup(&res);
113 }
114