1/* $NetBSD: mpu_acpi.c,v 1.12 2011/11/24 03:35:57 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 1.12 2011/11/24 03:35:57 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
45static int	mpu_acpi_match(device_t, cfdata_t, void *);
46static void	mpu_acpi_attach(device_t, device_t, void *);
47
48struct mpu_acpi_softc {
49	struct mpu_softc sc_mpu;
50	kmutex_t sc_lock;
51};
52
53CFATTACH_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
60static 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 */
68static int
69mpu_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 */
82static void
83mpu_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