1 | /* $NetBSD: mpu_acpi.c,v 1.13 2011/12/09 08:56:54 mrg 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 mpu(4) attachment based in lpt_acpi.c by Jared D. McNeill. |
30 | */ |
31 | |
32 | #include <sys/cdefs.h> |
33 | __KERNEL_RCSID(0, "$NetBSD: mpu_acpi.c,v 1.13 2011/12/09 08:56:54 mrg Exp $" ); |
34 | |
35 | #include <sys/param.h> |
36 | #include <sys/device.h> |
37 | #include <sys/systm.h> |
38 | |
39 | #include <dev/acpi/acpivar.h> |
40 | |
41 | #include <dev/ic/mpuvar.h> |
42 | |
43 | #include <dev/isa/isadmavar.h> |
44 | |
45 | static int mpu_acpi_match(device_t, cfdata_t, void *); |
46 | static void mpu_acpi_attach(device_t, device_t, void *); |
47 | |
48 | struct mpu_acpi_softc { |
49 | struct mpu_softc sc_mpu; |
50 | kmutex_t sc_lock; |
51 | }; |
52 | |
53 | CFATTACH_DECL_NEW(mpu_acpi, sizeof(struct mpu_acpi_softc), mpu_acpi_match, |
54 | mpu_acpi_attach, NULL, NULL); |
55 | |
56 | /* |
57 | * Supported device IDs |
58 | */ |
59 | |
60 | static const char * const mpu_acpi_ids[] = { |
61 | "PNPB006" , /* Roland MPU-401 (compatible) MIDI UART */ |
62 | NULL |
63 | }; |
64 | |
65 | /* |
66 | * mpu_acpi_match: autoconf(9) match routine |
67 | */ |
68 | static int |
69 | mpu_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, mpu_acpi_ids); |
77 | } |
78 | |
79 | /* |
80 | * mpu_acpi_attach: autoconf(9) attach routine |
81 | */ |
82 | static void |
83 | mpu_acpi_attach(device_t parent, device_t self, void *aux) |
84 | { |
85 | struct mpu_acpi_softc *asc = device_private(self); |
86 | struct mpu_softc *sc = &asc->sc_mpu; |
87 | struct acpi_attach_args *aa = aux; |
88 | struct acpi_resources res; |
89 | struct acpi_io *io; |
90 | struct acpi_irq *irq; |
91 | ACPI_STATUS rv; |
92 | |
93 | /* parse resources */ |
94 | rv = acpi_resource_parse(self, 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_dev(self, |
103 | "unable to find i/o register resource\n" ); |
104 | goto out; |
105 | } |
106 | |
107 | /* find our IRQ */ |
108 | irq = acpi_res_irq(&res, 0); |
109 | if (irq == NULL) { |
110 | aprint_error_dev(self, "unable to find irq resource\n" ); |
111 | goto out; |
112 | } |
113 | |
114 | sc->iot = aa->aa_iot; |
115 | if (bus_space_map(sc->iot, io->ar_base, io->ar_length, 0, &sc->ioh)) { |
116 | aprint_error_dev(self, "can't map i/o space\n" ); |
117 | goto out; |
118 | } |
119 | |
120 | sc->model = "Roland MPU-401 MIDI UART" ; |
121 | sc->sc_dev = self; |
122 | sc->lock = &asc->sc_lock; |
123 | mutex_init(&asc->sc_lock, MUTEX_DEFAULT, IPL_AUDIO); |
124 | mpu_attach(sc); |
125 | |
126 | sc->arg = isa_intr_establish(aa->aa_ic, irq->ar_irq, |
127 | (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL, |
128 | IPL_AUDIO, mpu_intr, sc); |
129 | |
130 | out: |
131 | acpi_resource_cleanup(&res); |
132 | } |
133 | |