1/*	$NetBSD: sb_isa.c,v 1.37 2011/11/23 23:07:32 jmcneill Exp $	*/
2
3/*
4 * Copyright (c) 1991-1993 Regents of the University of California.
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. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by the Computer Systems
18 *	Engineering Group at Lawrence Berkeley Laboratory.
19 * 4. Neither the name of the University nor of the Laboratory may be used
20 *    to endorse or promote products derived from this software without
21 *    specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 */
36
37#include <sys/cdefs.h>
38__KERNEL_RCSID(0, "$NetBSD: sb_isa.c,v 1.37 2011/11/23 23:07:32 jmcneill Exp $");
39
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/errno.h>
43#include <sys/ioctl.h>
44#include <sys/syslog.h>
45#include <sys/device.h>
46#include <sys/proc.h>
47
48#include <sys/bus.h>
49
50#include <sys/audioio.h>
51#include <dev/audio_if.h>
52#include <dev/midi_if.h>
53#include <dev/mulaw.h>
54
55#include <dev/isa/isavar.h>
56#include <dev/isa/isadmavar.h>
57
58#include <dev/isa/sbreg.h>
59#include <dev/isa/sbvar.h>
60
61#include <dev/isa/sbdspvar.h>
62
63static	int sbfind(device_t, struct sbdsp_softc *, int,
64	    struct isa_attach_args *, cfdata_t);
65
66int	sb_isa_match(device_t, cfdata_t, void *);
67void	sb_isa_attach(device_t, device_t, void *);
68
69CFATTACH_DECL_NEW(sb_isa, sizeof(struct sbdsp_softc),
70    sb_isa_match, sb_isa_attach, NULL, NULL);
71
72/*
73 * Probe / attach routines.
74 */
75
76/*
77 * Probe for the soundblaster hardware.
78 */
79int
80sb_isa_match(device_t parent, cfdata_t match, void *aux)
81{
82	struct isa_attach_args *ia = aux;
83	struct sbdsp_softc probesc, *sc = &probesc;
84
85	if (ia->ia_nio < 1)
86		return (0);
87	if (ia->ia_nirq < 1)
88		return (0);
89	if (ia->ia_ndrq < 1)
90		return (0);
91
92	if (ISA_DIRECT_CONFIG(ia))
93		return (0);
94
95	memset(sc, 0, sizeof *sc);
96	return sbfind(parent, sc, 1, aux, match);
97}
98
99static int
100sbfind(device_t parent, struct sbdsp_softc *sc, int probing,
101    struct isa_attach_args *ia, cfdata_t match)
102{
103	int rc = 0;
104
105	if (!SB_BASE_VALID(ia->ia_io[0].ir_addr)) {
106		printf("sb: configured iobase 0x%x invalid\n",
107		    ia->ia_io[0].ir_addr);
108		return 0;
109	}
110
111	sc->sc_ic = ia->ia_ic;
112
113	sc->sc_iot = ia->ia_iot;
114	/* Map i/o space [we map 24 ports which is the max of the sb and pro */
115	if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, SBP_NPORT, 0,
116	    &sc->sc_ioh))
117		return 0;
118
119	/* XXX These are only for setting chip configuration registers. */
120	sc->sc_iobase = ia->ia_io[0].ir_addr;
121	sc->sc_irq = ia->ia_irq[0].ir_irq;
122
123	sc->sc_drq8 = ia->ia_drq[0].ir_drq;
124	sc->sc_drq16 = ia->ia_drq[1].ir_drq;
125
126	if (!sbmatch(sc, probing, match))
127		goto bad;
128
129	rc = 1;
130
131	if (probing) {
132		ia->ia_nio = 1;
133		if (ISSBPROCLASS(sc))
134			ia->ia_io[0].ir_size = SBP_NPORT;
135		else
136			ia->ia_io[0].ir_size = SB_NPORT;
137
138		if (!ISSB16CLASS(sc) && sc->sc_model != SB_JAZZ)
139			ia->ia_ndrq = 1;
140		else
141			ia->ia_ndrq = 2;
142
143		ia->ia_nirq = 1;
144		ia->ia_irq[0].ir_irq = sc->sc_irq;
145
146		ia->ia_niomem = 0;
147	}
148
149bad:
150	bus_space_unmap(sc->sc_iot, sc->sc_ioh, SBP_NPORT);
151	return rc;
152}
153
154
155/*
156 * Attach hardware to driver, attach hardware driver to audio
157 * pseudo-device driver .
158 */
159void
160sb_isa_attach(device_t parent, device_t self, void *aux)
161{
162	struct sbdsp_softc *sc = device_private(self);
163	struct isa_attach_args *ia = aux;
164
165	sc->sc_dev = self;
166
167	if (!sbfind(parent, sc, 0, ia, device_cfdata(self)) ||
168	    bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr,
169	    ia->ia_io[0].ir_size, 0, &sc->sc_ioh)) {
170		aprint_error_dev(self, "sbfind failed\n");
171		return;
172	}
173
174	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
175	mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO);
176
177	sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
178	    IST_EDGE, IPL_AUDIO, sbdsp_intr, sc);
179
180	sbattach(sc);
181}
182