1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
|
/* $NetBSD: cms.c,v 1.1 2000/05/01 22:48:33 augustss Exp $ */
/*
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "cms.h"
#if NCMS > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/select.h>
#include <machine/bus.h>
#include <sys/audioio.h>
#include <dev/audio_if.h>
#include <dev/audiovar.h>
#include <sys/midiio.h>
#include <dev/midi_if.h>
#include <dev/midivar.h>
#include <dev/midisynvar.h>
#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <dev/isa/cmsreg.h>
#ifdef AUDIO_DEBUG
#define DPRINTF(x) if (cmsdebug) printf x
int cmsdebug = 0;
#else
#define DPRINTF(x)
#endif
struct cms_softc {
struct midi_softc sc_mididev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
/* shadow registers for each chip */
u_int8_t sc_shadowregs[32*2];
midisyn sc_midisyn;
};
int cms_probe __P((struct device *, struct cfdata *, void *));
void cms_attach __P((struct device *, struct device *, void *));
struct cfattach cms_ca = {
sizeof(struct cms_softc), cms_probe, cms_attach,
};
int cms_open __P((midisyn *, int));
void cms_close __P((midisyn *));
void cms_on __P((midisyn *, u_int32_t, u_int32_t, u_int32_t));
void cms_off __P((midisyn *, u_int32_t, u_int32_t, u_int32_t));
struct midisyn_methods midi_cms_hw = {
cms_open, /* open */
cms_close, /* close */
0, /* ioctl */
0, /* allocv */
cms_on, /* noteon */
cms_off, /* noteoff */
0, /* keypres */
0, /* ctlchg */
0, /* pgmchg */
0, /* chnpres */
0, /* pitchb */
0, /* sysex */
};
static void cms_reset __P((struct cms_softc *));
static char cms_note_table[] = {
/* A */ 3,
/* A# */ 31,
/* B */ 58,
/* C */ 83,
/* C# */ 107,
/* D */ 130,
/* D# */ 151,
/* E */ 172,
/* F */ 191,
/* F# */ 209,
/* G */ 226,
/* G# */ 242,
};
#define NOTE_TO_OCTAVE(note) (((note)-CMS_FIRST_NOTE)/12)
#define NOTE_TO_COUNT(note) cms_note_table[(((note)-CMS_FIRST_NOTE)%12)]
int
cms_probe(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct isa_attach_args *ia = aux;
bus_space_tag_t iot;
bus_space_handle_t ioh;
int found = 0;
int i;
DPRINTF(("cms_probe():\n"));
iot = ia->ia_iot;
if (ia->ia_iobase == IOBASEUNK)
return 0;
if (bus_space_map(iot, ia->ia_iobase, CMS_IOSIZE, 0, &ioh))
return 0;
bus_space_write_1(iot, ioh, CMS_WREG, 0xaa);
if (bus_space_read_1(iot, ioh, CMS_RREG) != 0xaa)
goto out;
for (i = 0; i < 8; i++) {
if (bus_space_read_1(iot, ioh, CMS_MREG) != 0x7f)
goto out;
}
found = 1;
ia->ia_iosize = CMS_IOSIZE;
out:
bus_space_unmap(iot, ioh, CMS_IOSIZE);
return found;
}
void
cms_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct cms_softc *sc = (struct cms_softc *)self;
struct isa_attach_args *ia = aux;
bus_space_tag_t iot;
bus_space_handle_t ioh;
midisyn *ms;
struct audio_attach_args arg;
printf("\n");
DPRINTF(("cms_attach():\n"));
iot = ia->ia_iot;
if (bus_space_map(iot, ia->ia_iobase, CMS_IOSIZE, 0, &ioh)) {
printf(": can't map i/o space\n");
return;
}
sc->sc_iot = iot;
sc->sc_ioh = ioh;
/* now let's reset the chips */
cms_reset(sc);
ms = &sc->sc_midisyn;
ms->mets = &midi_cms_hw;
strcpy(ms->name, "Creative Music System");
ms->nvoice = CMS_NVOICES;
ms->flags = MS_DOALLOC;
ms->data = sc;
/* use the synthesiser */
midisyn_attach(&sc->sc_mididev, ms);
/* now attach the midi device to the synthesiser */
arg.type = AUDIODEV_TYPE_MIDI;
arg.hwif = sc->sc_mididev.hw_if;
arg.hdl = sc->sc_mididev.hw_hdl;
config_found((struct device *)&sc->sc_mididev, &arg, 0);
}
int
cms_open(ms,flag)
midisyn *ms;
int flag;
{
struct cms_softc *sc = (struct cms_softc *)ms->data;
cms_reset(sc);
return 0;
}
void
cms_close(ms)
midisyn *ms;
{
struct cms_softc *sc = (struct cms_softc *)ms->data;
cms_reset(sc);
}
void
cms_on(ms, chan, note, vel)
midisyn *ms;
u_int32_t chan;
u_int32_t note;
u_int32_t vel;
{
struct cms_softc *sc = (struct cms_softc *)ms->data;
int chip = CHAN_TO_CHIP(chan);
int voice = CHAN_TO_VOICE(chan);
u_int8_t octave;
u_int8_t count;
u_int8_t reg;
u_int8_t vol;
if (note < CMS_FIRST_NOTE)
return;
octave = NOTE_TO_OCTAVE(note);
count = NOTE_TO_COUNT(note);
DPRINTF(("chip=%d voice=%d octave=%d count=%d offset=%d shift=%d\n",
chip, voice, octave, count, OCTAVE_OFFSET(voice),
OCTAVE_SHIFT(voice)));
/* write the count */
CMS_WRITE(sc, chip, CMS_IREG_FREQ0 + voice, count);
/* select the octave */
reg = CMS_READ(sc, chip, CMS_IREG_OCTAVE_1_0 + OCTAVE_OFFSET(voice));
reg &= ~(0x0f<<OCTAVE_SHIFT(voice));
reg |= ((octave&0x7)<<OCTAVE_SHIFT(voice));
CMS_WRITE(sc, chip, CMS_IREG_OCTAVE_1_0 + OCTAVE_OFFSET(voice), reg);
/* set the volume */
vol = (vel>>3)&0x0f;
CMS_WRITE(sc, chip, CMS_IREG_VOL0 + voice, ((vol<<4)|vol));
/* enable the voice */
reg = CMS_READ(sc, chip, CMS_IREG_FREQ_CTL);
reg |= (1<<voice);
CMS_WRITE(sc, chip, CMS_IREG_FREQ_CTL, reg);
}
void
cms_off(ms, chan, note, vel)
midisyn *ms;
u_int32_t chan;
u_int32_t note;
u_int32_t vel;
{
struct cms_softc *sc = (struct cms_softc *)ms->data;
int chip = CHAN_TO_CHIP(chan);
int voice = CHAN_TO_VOICE(chan);
u_int8_t reg;
if (note < CMS_FIRST_NOTE)
return;
/* disable the channel */
reg = CMS_READ(sc, chip, CMS_IREG_FREQ_CTL);
reg &= ~(1<<voice);
CMS_WRITE(sc, chip, CMS_IREG_FREQ_CTL, reg);
}
static void
cms_reset(sc)
struct cms_softc *sc;
{
int i;
DPRINTF(("cms_reset():\n"));
for (i = 0; i < 6; i++) {
CMS_WRITE(sc, 0, CMS_IREG_VOL0+i, 0x00);
CMS_WRITE(sc, 1, CMS_IREG_VOL0+i, 0x00);
CMS_WRITE(sc, 0, CMS_IREG_FREQ0+i, 0x00);
CMS_WRITE(sc, 1, CMS_IREG_FREQ0+i, 0x00);
}
for (i = 0; i < 3; i++) {
CMS_WRITE(sc, 0, CMS_IREG_OCTAVE_1_0+i, 0x00);
CMS_WRITE(sc, 1, CMS_IREG_OCTAVE_1_0+i, 0x00);
}
CMS_WRITE(sc, 0, CMS_IREG_FREQ_CTL, 0x00);
CMS_WRITE(sc, 1, CMS_IREG_FREQ_CTL, 0x00);
CMS_WRITE(sc, 0, CMS_IREG_NOISE_CTL, 0x00);
CMS_WRITE(sc, 1, CMS_IREG_NOISE_CTL, 0x00);
CMS_WRITE(sc, 0, CMS_IREG_NOISE_BW, 0x00);
CMS_WRITE(sc, 1, CMS_IREG_NOISE_BW, 0x00);
/*
* These registers don't appear to be useful, but must be
* cleared otherwise certain voices don't work properly
*/
CMS_WRITE(sc, 0, 0x18, 0x00);
CMS_WRITE(sc, 1, 0x18, 0x00);
CMS_WRITE(sc, 0, 0x19, 0x00);
CMS_WRITE(sc, 1, 0x19, 0x00);
CMS_WRITE(sc, 0, CMS_IREG_SYS_CTL, CMS_IREG_SYS_RESET);
CMS_WRITE(sc, 1, CMS_IREG_SYS_CTL, CMS_IREG_SYS_RESET);
CMS_WRITE(sc, 0, CMS_IREG_SYS_CTL, CMS_IREG_SYS_ENBL);
CMS_WRITE(sc, 1, CMS_IREG_SYS_CTL, CMS_IREG_SYS_ENBL);
}
#endif
|