1 /* $OpenBSD: gus_isa.c,v 1.4 2004/06/13 21:49:24 niklas 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 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40 /*
41 *
42 * TODO:
43 * . figure out why mixer activity while sound is playing causes problems
44 * (phantom interrupts?)
45 * . figure out a better deinterleave strategy that avoids sucking up
46 * CPU, memory and cache bandwidth. (Maybe a special encoding?
47 * Maybe use the double-speed sampling/hardware deinterleave trick
48 * from the GUS SDK?) A 486/33 isn't quite fast enough to keep
49 * up with 44.1kHz 16-bit stereo output without some drop-outs.
50 * . use CS4231 for 16-bit sampling, for a-law and mu-law playback.
51 * . actually test full-duplex sampling(recording) and playback.
52 */
53
54 /*
55 * Gravis UltraSound driver
56 *
57 * For more detailed information, see the GUS developers' kit
58 * available on the net at:
59 *
60 * ftp://freedom.nmsu.edu/pub/ultrasound/gravis/util/
61 * gusdkXXX.zip (developers' kit--get rev 2.22 or later)
62 * See ultrawrd.doc inside--it's MS Word (ick), but it's the bible
63 *
64 */
65
66 /*
67 * The GUS Max has a slightly strange set of connections between the CS4231
68 * and the GF1 and the DMA interconnects. It's set up so that the CS4231 can
69 * be playing while the GF1 is loading patches from the system.
70 *
71 * Here's a recreation of the DMA interconnect diagram:
72 *
73 * GF1
74 * +---------+ digital
75 * | | record ASIC
76 * | |--------------+
77 * | | | +--------+
78 * | | play (dram) | +----+ | |
79 * | |--------------(------|-\ | | +-+ |
80 * +---------+ | | >-|----|---|C|--|------ dma chan 1
81 * | +---|-/ | | +-+ |
82 * | | +----+ | | |
83 * | | +----+ | | |
84 * +---------+ +-+ +--(---|-\ | | | |
85 * | | play |8| | | >-|----|----+---|------ dma chan 2
86 * | ---C----|--------|/|------(---|-/ | | |
87 * | ^ |record |1| | +----+ | |
88 * | | | /----|6|------+ +--------+
89 * | ---+----|--/ +-+
90 * +---------+
91 * CS4231 8-to-16 bit bus conversion, if needed
92 *
93 *
94 * "C" is an optional combiner.
95 *
96 */
97
98 #include <sys/param.h>
99 #include <sys/systm.h>
100 #include <sys/errno.h>
101 #include <sys/ioctl.h>
102 #include <sys/syslog.h>
103 #include <sys/device.h>
104 #include <sys/proc.h>
105 #include <sys/buf.h>
106 #include <sys/fcntl.h>
107 #include <sys/malloc.h>
108 #include <sys/kernel.h>
109 #include <sys/timeout.h>
110
111 #include <machine/cpu.h>
112 #include <machine/intr.h>
113 #include <machine/bus.h>
114 #include <machine/cpufunc.h>
115 #include <sys/audioio.h>
116 #include <dev/audio_if.h>
117 #include <dev/mulaw.h>
118 #include <dev/auconv.h>
119
120 #include <dev/isa/isavar.h>
121 #include <dev/isa/isadmavar.h>
122
123 #include <dev/ic/ics2101reg.h>
124 #include <dev/ic/cs4231reg.h>
125 #include <dev/ic/ad1848reg.h>
126 #include <dev/isa/ics2101var.h>
127 #include <dev/isa/ad1848var.h>
128 #include <dev/isa/cs4231var.h>
129 #include "gusreg.h"
130 #include "gusvar.h"
131
132 /*
133 * ISA bus driver routines
134 */
135
136 int gus_isa_match(struct device *, void *, void *);
137 void gus_isa_attach(struct device *, struct device *, void *);
138
139 struct cfattach gus_isa_ca = {
140 sizeof(struct gus_softc), gus_isa_match, gus_isa_attach,
141 };
142
143 int
144 gus_isa_match(parent, match, aux)
145 struct device *parent;
146 void *match;
147 void *aux;
148 {
149 struct isa_attach_args *ia = aux;
150 int iobase = ia->ia_iobase;
151 int recdrq = ia->ia_drq2;
152
153 /*
154 * Before we do anything else, make sure requested IRQ and DRQ are
155 * valid for this card.
156 */
157
158 /* XXX range check before indexing!! */
159 if (ia->ia_irq == IRQUNK || gus_irq_map[ia->ia_irq] == IRQUNK) {
160 DPRINTF(("gus: invalid irq %d, card not probed\n", ia->ia_irq));
161 return 0;
162 }
163
164 if (ia->ia_drq == DRQUNK || gus_drq_map[ia->ia_drq] == DRQUNK) {
165 DPRINTF(("gus: invalid drq %d, card not probed\n", ia->ia_drq));
166 return 0;
167 }
168
169 if (recdrq != DRQUNK) {
170 if (recdrq > 7 || gus_drq_map[recdrq] == DRQUNK) {
171 DPRINTF(("gus: invalid second DMA channel (%d), card not probed\n", recdrq));
172 return 0;
173 }
174 } else
175 recdrq = ia->ia_drq;
176
177 if (iobase == IOBASEUNK) {
178 int i;
179 for(i = 0; i < gus_addrs; i++)
180 if (gus_test_iobase(ia->ia_iot, gus_base_addrs[i])) {
181 iobase = gus_base_addrs[i];
182 goto done;
183 }
184 return 0;
185 } else if (!gus_test_iobase(ia->ia_iot, iobase))
186 return 0;
187
188 done:
189 if ((ia->ia_drq != -1 && !isa_drq_isfree(parent, ia->ia_drq)) ||
190 (recdrq != -1 && !isa_drq_isfree(parent, recdrq)))
191 return 0;
192
193 ia->ia_iobase = iobase;
194 ia->ia_iosize = GUS_NPORT1;
195 return 1;
196 }
197
198
199 /*
200 * Setup the GUS for use; called shortly after probe
201 */
202
203 void
204 gus_isa_attach(parent, self, aux)
205 struct device *parent, *self;
206 void *aux;
207 {
208 struct gus_softc *sc = (void *) self;
209 struct isa_attach_args *ia = aux;
210
211 sc->sc_iot = ia->ia_iot;
212 sc->sc_iobase = ia->ia_iobase;
213
214 /* Map i/o space */
215 if (bus_space_map(sc->sc_iot, sc->sc_iobase, GUS_NPORT1, 0, &sc->sc_ioh1))
216 panic("%s: can't map io port range 1", self->dv_xname);
217 if (bus_space_map(sc->sc_iot, sc->sc_iobase+GUS_IOH2_OFFSET, GUS_NPORT2, 0,
218 &sc->sc_ioh2))
219 panic("%s: can't map io port range 2", self->dv_xname);
220
221 /* XXX Maybe we shouldn't fail on mapping this, but just assume
222 * the card is of revision 0? */
223 if (bus_space_map(sc->sc_iot, sc->sc_iobase+GUS_IOH3_OFFSET, GUS_NPORT3, 0,
224 &sc->sc_ioh3))
225 panic("%s: can't map io port range 3", self->dv_xname);
226
227 if (bus_space_map(sc->sc_iot, sc->sc_iobase+GUS_IOH4_OFFSET, GUS_NPORT4, 0,
228 &sc->sc_ioh4))
229 panic("%s: can't map io port range 4", self->dv_xname);
230
231 sc->sc_irq = ia->ia_irq;
232 sc->sc_drq = ia->ia_drq;
233 sc->sc_recdrq = ia->ia_drq2;
234 sc->sc_isa = parent;
235
236 gus_subattach(sc, aux);
237 }