1 /* $OpenBSD: sb_isa.c,v 1.12 2022/04/06 18:59:28 naddy Exp $ */
2 /* $NetBSD: sb_isa.c,v 1.15 1997/11/30 15:32:25 drochner Exp $ */
3
4 /*
5 * Copyright (c) 1991-1993 Regents of the University of California.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the Computer Systems
19 * Engineering Group at Lawrence Berkeley Laboratory.
20 * 4. Neither the name of the University nor of the Laboratory may be used
21 * to endorse or promote products derived from this software without
22 * specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 */
37
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/errno.h>
41 #include <sys/ioctl.h>
42 #include <sys/syslog.h>
43 #include <sys/device.h>
44
45 #include <machine/bus.h>
46
47 #include <sys/audioio.h>
48 #include <dev/audio_if.h>
49 #include <dev/midi_if.h>
50
51 #include <dev/isa/isavar.h>
52 #include <dev/isa/isadmavar.h>
53
54 #include <dev/isa/sbreg.h>
55 #include <dev/isa/sbvar.h>
56
57 #include <dev/isa/sbdspvar.h>
58
59 static int sbfind(struct device *, struct sbdsp_softc *, struct isa_attach_args *);
60
61 int sb_isa_match(struct device *, void *, void *);
62 void sb_isa_attach(struct device *, struct device *, void *);
63
64 const struct cfattach sb_isa_ca = {
65 sizeof(struct sbdsp_softc), sb_isa_match, sb_isa_attach
66 };
67
68 /*
69 * Probe / attach routines.
70 */
71
72 /*
73 * Probe for the soundblaster hardware.
74 */
75 int
sb_isa_match(struct device * parent,void * match,void * aux)76 sb_isa_match(struct device *parent, void *match, void *aux)
77 {
78 struct sbdsp_softc probesc, *sc = &probesc;
79
80 bzero(sc, sizeof *sc);
81 sc->sc_dev.dv_cfdata = ((struct device *)match)->dv_cfdata;
82 strlcpy(sc->sc_dev.dv_xname, "sb", sizeof sc->sc_dev.dv_xname);
83 return sbfind(parent, sc, aux);
84 }
85
86 static int
sbfind(struct device * parent,struct sbdsp_softc * sc,struct isa_attach_args * ia)87 sbfind(struct device *parent, struct sbdsp_softc *sc,
88 struct isa_attach_args *ia)
89 {
90 int rc = 0;
91
92 if (!SB_BASE_VALID(ia->ia_iobase))
93 return 0;
94
95 sc->sc_iot = ia->ia_iot;
96
97 /* Map i/o space [we map 24 ports which is the max of the sb and pro] */
98 if (bus_space_map(sc->sc_iot, ia->ia_iobase, SBP_NPORT, 0,
99 &sc->sc_ioh))
100 return 0;
101
102 sc->sc_iobase = ia->ia_iobase;
103 sc->sc_irq = ia->ia_irq;
104 sc->sc_drq8 = ia->ia_drq;
105 sc->sc_drq16 = ia->ia_drq2;
106 sc->sc_ic = ia->ia_ic;
107
108 if (!sbmatch(sc))
109 goto bad;
110
111 if ((sc->sc_drq8 != -1 && !isa_drq_isfree(parent, sc->sc_drq8)) ||
112 (sc->sc_drq16 != -1 && !isa_drq_isfree(parent, sc->sc_drq16)))
113 goto bad;
114
115 if (ISSBPROCLASS(sc))
116 ia->ia_iosize = SBP_NPORT;
117 else
118 ia->ia_iosize = SB_NPORT;
119
120 if (!ISSB16CLASS(sc) && sc->sc_model != SB_JAZZ)
121 ia->ia_drq2 = -1;
122
123 ia->ia_irq = sc->sc_irq;
124
125 rc = 1;
126
127 bad:
128 bus_space_unmap(sc->sc_iot, sc->sc_ioh, SBP_NPORT);
129 return rc;
130 }
131
132
133 /*
134 * Attach hardware to driver, attach hardware driver to audio
135 * pseudo-device driver .
136 */
137 void
sb_isa_attach(struct device * parent,struct device * self,void * aux)138 sb_isa_attach(struct device *parent, struct device *self, void *aux)
139 {
140 struct sbdsp_softc *sc = (struct sbdsp_softc *)self;
141 struct isa_attach_args *ia = aux;
142
143 if (!sbfind(parent, sc, ia) ||
144 bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize, 0,
145 &sc->sc_ioh)) {
146 printf("%s: sbfind failed\n", sc->sc_dev.dv_xname);
147 return;
148 }
149 sc->sc_ic = ia->ia_ic;
150 sc->sc_isa = parent;
151 sbattach(sc);
152 }
153