1 /* $NetBSD: mpu_isa.c,v 1.23 2016/07/14 10:19:06 msaitoh Exp $ */
2
3 /*-
4 * Copyright (c) 1999, 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Lennart Augustsson and by Andrew Doran.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: mpu_isa.c,v 1.23 2016/07/14 10:19:06 msaitoh Exp $");
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/errno.h>
39 #include <sys/device.h>
40 #include <sys/proc.h>
41 #include <sys/conf.h>
42 #include <sys/midiio.h>
43
44 #include <sys/bus.h>
45
46 #include <dev/midi_if.h>
47
48 #include <dev/isa/isavar.h>
49 #include <dev/ic/mpuvar.h>
50
51 struct mpu_isa_softc {
52 device_t sc_dev;
53 struct mpu_softc sc_mpu; /* generic part */
54 void *sc_ih; /* ISA interrupt handler */
55 kmutex_t sc_lock;
56 };
57
58 static int mpu_isa_match(device_t, cfdata_t, void *);
59 static void mpu_isa_attach(device_t, device_t, void *);
60
61 CFATTACH_DECL_NEW(mpu_isa, sizeof(struct mpu_isa_softc),
62 mpu_isa_match, mpu_isa_attach, NULL, NULL);
63
64 static int
mpu_isa_match(device_t parent,cfdata_t match,void * aux)65 mpu_isa_match(device_t parent, cfdata_t match, void *aux)
66 {
67 struct isa_attach_args *ia = aux;
68 struct mpu_isa_softc sc;
69 int r;
70
71 if (ia->ia_nio < 1)
72 return 0;
73 if (ia->ia_nirq < 1)
74 return 0;
75
76 if (ISA_DIRECT_CONFIG(ia))
77 return 0;
78
79 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
80 return 0;
81 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
82 return 0;
83
84 memset(&sc, 0, sizeof sc);
85 sc.sc_mpu.iot = ia->ia_iot;
86 if (bus_space_map(sc.sc_mpu.iot, ia->ia_io[0].ir_addr, MPU401_NPORT, 0,
87 &sc.sc_mpu.ioh))
88 return 0;
89 r = mpu_find(&sc.sc_mpu);
90 bus_space_unmap(sc.sc_mpu.iot, sc.sc_mpu.ioh, MPU401_NPORT);
91 if (r) {
92 ia->ia_nio = 1;
93 ia->ia_io[0].ir_size = MPU401_NPORT;
94
95 ia->ia_nirq = 1;
96
97 ia->ia_niomem = 0;
98 ia->ia_ndrq = 0;
99 }
100 return r;
101 }
102
103 static void
mpu_isa_attach(device_t parent,device_t self,void * aux)104 mpu_isa_attach(device_t parent, device_t self, void *aux)
105 {
106 struct mpu_isa_softc *sc = device_private(self);
107 struct isa_attach_args *ia = aux;
108
109 aprint_naive("\n");
110 aprint_normal("\n");
111
112 if (bus_space_map(sc->sc_mpu.iot, ia->ia_io[0].ir_addr, MPU401_NPORT,
113 0, &sc->sc_mpu.ioh)) {
114 aprint_error_dev(self,
115 "mpu_isa_attach: bus_space_map failed\n");
116 return;
117 }
118
119 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
120 IST_EDGE, IPL_AUDIO, mpu_intr, &sc->sc_mpu);
121
122 sc->sc_mpu.model = "Roland MPU-401 MIDI UART";
123 sc->sc_dev = self;
124 sc->sc_mpu.lock = &sc->sc_lock;
125 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_AUDIO);
126 mpu_attach(&sc->sc_mpu);
127 }
128