1 /* $OpenBSD: gus_isapnp.c,v 1.11 2024/05/28 09:27:08 jsg Exp $ */
2 /* $NetBSD: gus.c,v 1.51 1998/01/25 23:48:06 mycroft Exp $ */
3
4 /*-
5 * Copyright (c) 1996 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Ken Hornstein and John Kohl.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 /*
34 *
35 * TODO:
36 * . figure out why mixer activity while sound is playing causes problems
37 * (phantom interrupts?)
38 * . figure out a better deinterleave strategy that avoids sucking up
39 * CPU, memory and cache bandwidth. (Maybe a special encoding?
40 * Maybe use the double-speed sampling/hardware deinterleave trick
41 * from the GUS SDK?) A 486/33 isn't quite fast enough to keep
42 * up with 44.1kHz 16-bit stereo output without some drop-outs.
43 * . use CS4231 for 16-bit sampling, for a-law and mu-law playback.
44 * . actually test full-duplex sampling(recording) and playback.
45 */
46
47 /*
48 * Gravis UltraSound driver
49 *
50 * For more detailed information, see the GUS developers' kit
51 * available on the net at:
52 *
53 * ftp://freedom.nmsu.edu/pub/ultrasound/gravis/util/
54 * gusdkXXX.zip (developers' kit--get rev 2.22 or later)
55 * See ultrawrd.doc inside--it's MS Word (ick), but it's the bible
56 *
57 */
58
59 /*
60 * The GUS Max has a slightly strange set of connections between the CS4231
61 * and the GF1 and the DMA interconnects. It's set up so that the CS4231 can
62 * be playing while the GF1 is loading patches from the system.
63 *
64 * Here's a recreation of the DMA interconnect diagram:
65 *
66 * GF1
67 * +---------+ digital
68 * | | record ASIC
69 * | |--------------+
70 * | | | +--------+
71 * | | play (dram) | +----+ | |
72 * | |--------------(------|-\ | | +-+ |
73 * +---------+ | | >-|----|---|C|--|------ dma chan 1
74 * | +---|-/ | | +-+ |
75 * | | +----+ | | |
76 * | | +----+ | | |
77 * +---------+ +-+ +--(---|-\ | | | |
78 * | | play |8| | | >-|----|----+---|------ dma chan 2
79 * | ---C----|--------|/|------(---|-/ | | |
80 * | ^ |record |1| | +----+ | |
81 * | | | /----|6|------+ +--------+
82 * | ---+----|--/ +-+
83 * +---------+
84 * CS4231 8-to-16 bit bus conversion, if needed
85 *
86 *
87 * "C" is an optional combiner.
88 *
89 */
90
91 #include <sys/param.h>
92 #include <sys/systm.h>
93 #include <sys/errno.h>
94 #include <sys/ioctl.h>
95 #include <sys/syslog.h>
96 #include <sys/device.h>
97 #include <sys/buf.h>
98 #include <sys/fcntl.h>
99 #include <sys/malloc.h>
100 #include <sys/kernel.h>
101 #include <sys/timeout.h>
102
103 #include <machine/cpu.h>
104 #include <machine/intr.h>
105 #include <machine/bus.h>
106 #include <machine/cpufunc.h>
107 #include <sys/audioio.h>
108 #include <dev/audio_if.h>
109
110 #include <dev/isa/isavar.h>
111 #include <dev/isa/isadmavar.h>
112
113 #include <dev/ic/ics2101reg.h>
114 #include <dev/ic/cs4231reg.h>
115 #include <dev/ic/ad1848reg.h>
116 #include <dev/isa/ics2101var.h>
117 #include <dev/isa/ad1848var.h>
118 #include "gusreg.h"
119 #include "gusvar.h"
120
121 int gus_isapnp_match(struct device *, void *, void *);
122 void gus_isapnp_attach(struct device *, struct device *, void *);
123
124 const struct cfattach gus_isapnp_ca = {
125 sizeof(struct gus_softc), gus_isapnp_match, gus_isapnp_attach
126 };
127
128 /*
129 * Probe for the GUS hardware.
130 */
131 int
gus_isapnp_match(struct device * parent,void * match,void * aux)132 gus_isapnp_match(struct device *parent, void *match, void *aux)
133 {
134 return 1;
135 }
136
137 void
gus_isapnp_attach(struct device * parent,struct device * self,void * aux)138 gus_isapnp_attach(struct device *parent, struct device *self, void *aux)
139 {
140 struct gus_softc *sc = (void *) self;
141 struct isa_attach_args *ipa = aux;
142
143 sc->sc_iot = ipa->ia_iot;
144 sc->sc_iobase = ipa->ia_iobase;
145
146 sc->sc_ioh1 = ipa->ipa_io[0].h; /* p2xr */
147 sc->sc_ioh2 = ipa->ipa_io[1].h; /* p3xr */
148 sc->sc_ioh3 = ipa->ipa_io[2].h; /* codec/mixer */
149 sc->sc_ioh4 = (bus_space_handle_t)NULL; /* midi */
150
151 sc->sc_irq = ipa->ipa_irq[0].num;
152 sc->sc_drq = ipa->ipa_drq[1].num;
153 sc->sc_recdrq = ipa->ipa_drq[0].num;
154 sc->sc_isa = parent->dv_parent;
155
156 gus_subattach(sc, ipa);
157 }
158