Annotation of sys/dev/isa/sb_isa.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: sb_isa.c,v 1.8 2006/01/02 05:21:40 brad 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: #include <sys/proc.h>
45:
46: #include <machine/bus.h>
47:
48: #include <sys/audioio.h>
49: #include <dev/audio_if.h>
50: #include <dev/midi_if.h>
51: #include <dev/mulaw.h>
52:
53: #include <dev/isa/isavar.h>
54: #include <dev/isa/isadmavar.h>
55:
56: #include <dev/isa/sbreg.h>
57: #include <dev/isa/sbvar.h>
58:
59: #include <dev/isa/sbdspvar.h>
60:
61: static int sbfind(struct device *, struct sbdsp_softc *, struct isa_attach_args *);
62:
63: int sb_isa_match(struct device *, void *, void *);
64: void sb_isa_attach(struct device *, struct device *, void *);
65:
66: struct cfattach sb_isa_ca = {
67: sizeof(struct sbdsp_softc), sb_isa_match, sb_isa_attach
68: };
69:
70: /*
71: * Probe / attach routines.
72: */
73:
74: /*
75: * Probe for the soundblaster hardware.
76: */
77: int
78: sb_isa_match(parent, match, aux)
79: struct device *parent;
80: void *match;
81: void *aux;
82: {
83: struct sbdsp_softc probesc, *sc = &probesc;
84:
85: bzero(sc, sizeof *sc);
86: sc->sc_dev.dv_cfdata = ((struct device *)match)->dv_cfdata;
87: strlcpy(sc->sc_dev.dv_xname, "sb", sizeof sc->sc_dev.dv_xname);
88: return sbfind(parent, sc, aux);
89: }
90:
91: static int
92: sbfind(parent, sc, ia)
93: struct device *parent;
94: struct sbdsp_softc *sc;
95: struct isa_attach_args *ia;
96: {
97: int rc = 0;
98:
99: if (!SB_BASE_VALID(ia->ia_iobase))
100: return 0;
101:
102: sc->sc_iot = ia->ia_iot;
103:
104: /* Map i/o space [we map 24 ports which is the max of the sb and pro] */
105: if (bus_space_map(sc->sc_iot, ia->ia_iobase, SBP_NPORT, 0,
106: &sc->sc_ioh))
107: return 0;
108:
109: sc->sc_iobase = ia->ia_iobase;
110: sc->sc_irq = ia->ia_irq;
111: sc->sc_drq8 = ia->ia_drq;
112: sc->sc_drq16 = ia->ia_drq2;
113: sc->sc_ic = ia->ia_ic;
114:
115: if (!sbmatch(sc))
116: goto bad;
117:
118: if ((sc->sc_drq8 != -1 && !isa_drq_isfree(parent, sc->sc_drq8)) ||
119: (sc->sc_drq16 != -1 && !isa_drq_isfree(parent, sc->sc_drq16)))
120: goto bad;
121:
122: if (ISSBPROCLASS(sc))
123: ia->ia_iosize = SBP_NPORT;
124: else
125: ia->ia_iosize = SB_NPORT;
126:
127: if (!ISSB16CLASS(sc) && sc->sc_model != SB_JAZZ)
128: ia->ia_drq2 = -1;
129:
130: ia->ia_irq = sc->sc_irq;
131:
132: rc = 1;
133:
134: bad:
135: bus_space_unmap(sc->sc_iot, sc->sc_ioh, SBP_NPORT);
136: return rc;
137: }
138:
139:
140: /*
141: * Attach hardware to driver, attach hardware driver to audio
142: * pseudo-device driver .
143: */
144: void
145: sb_isa_attach(parent, self, aux)
146: struct device *parent, *self;
147: void *aux;
148: {
149: struct sbdsp_softc *sc = (struct sbdsp_softc *)self;
150: struct isa_attach_args *ia = aux;
151:
152: if (!sbfind(parent, sc, ia) ||
153: bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize, 0,
154: &sc->sc_ioh)) {
155: printf("%s: sbfind failed\n", sc->sc_dev.dv_xname);
156: return;
157: }
158: sc->sc_ic = ia->ia_ic;
159: sc->sc_isa = parent;
160: sbattach(sc);
161: }
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