xref: /netbsd-src/sys/arch/dreamcast/dev/g2/aica.c (revision aaf4ece63a859a04e37cf3a7229b5fab0157cc06)
1 /*	$NetBSD: aica.c,v 1.11 2005/12/24 20:06:59 perry Exp $	*/
2 
3 /*
4  * Copyright (c) 2003 SHIMIZU Ryo <ryo@misakimix.org>
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  *
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. The name of the author may not be used to endorse or promote products
17  *    derived from this software without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 
31 #include <sys/cdefs.h>
32 __KERNEL_RCSID(0, "$NetBSD: aica.c,v 1.11 2005/12/24 20:06:59 perry Exp $");
33 
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/proc.h>
38 #include <sys/audioio.h>
39 
40 #include <dev/audio_if.h>
41 #include <dev/mulaw.h>
42 #include <dev/auconv.h>
43 
44 #include <machine/bus.h>
45 #include <machine/sysasicvar.h>
46 
47 #include <dreamcast/dev/g2/g2busvar.h>
48 #include <dreamcast/dev/g2/aicavar.h>
49 #include <dreamcast/dev/microcode/aica_armcode.h>
50 
51 #define	AICA_REG_ADDR	0x00700000
52 #define	AICA_RAM_START	0x00800000
53 #define	AICA_RAM_SIZE	0x00200000
54 #define	AICA_NCHAN	64
55 #define	AICA_TIMEOUT	0x1800
56 
57 struct aica_softc {
58 	struct device		sc_dev;		/* base device */
59 	bus_space_tag_t		sc_memt;
60 	bus_space_handle_t	sc_aica_regh;
61 	bus_space_handle_t	sc_aica_memh;
62 
63 	/* audio property */
64 	int			sc_open;
65 	int			sc_encodings;
66 	int			sc_precision;
67 	int			sc_channels;
68 	int			sc_rate;
69 	void			(*sc_intr)(void *);
70 	void			*sc_intr_arg;
71 
72 	int			sc_output_master;
73 	int			sc_output_gain[2];
74 #define	AICA_VOLUME_LEFT	0
75 #define	AICA_VOLUME_RIGHT	1
76 
77 	/* work for output */
78 	void			*sc_buffer;
79 	void			*sc_buffer_start;
80 	void			*sc_buffer_end;
81 	int			sc_blksize;
82 	int			sc_nextfill;
83 };
84 
85 const struct {
86 	const char *name;
87 	int	encoding;
88 	int	precision;
89 } aica_encodings[] = {
90 	{AudioEadpcm,		AUDIO_ENCODING_ADPCM,		4},
91 	{AudioEslinear,		AUDIO_ENCODING_SLINEAR,		8},
92 	{AudioEulinear,		AUDIO_ENCODING_ULINEAR,		8},
93 	{AudioEmulaw,		AUDIO_ENCODING_ULAW,		8},
94 	{AudioEalaw,		AUDIO_ENCODING_ALAW,		8},
95 	{AudioEslinear_be,	AUDIO_ENCODING_SLINEAR_BE,	16},
96 	{AudioEslinear_le,	AUDIO_ENCODING_SLINEAR_LE,	16},
97 	{AudioEulinear_be,	AUDIO_ENCODING_ULINEAR_BE,	16},
98 	{AudioEulinear_le,	AUDIO_ENCODING_ULINEAR_LE,	16},
99 };
100 
101 #define AICA_NFORMATS	5
102 static const struct audio_format aica_formats[AICA_NFORMATS] = {
103 	{NULL, AUMODE_PLAY, AUDIO_ENCODING_ADPCM, 4, 4,
104 	 1, AUFMT_MONAURAL, 0, {1, 65536}},
105 	{NULL, AUMODE_PLAY, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
106 	 1, AUFMT_MONAURAL, 0, {1, 65536}},
107 	{NULL, AUMODE_PLAY, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
108 	 2, AUFMT_STEREO, 0, {1, 65536}},
109 	{NULL, AUMODE_PLAY, AUDIO_ENCODING_SLINEAR_LE, 8, 8,
110 	 1, AUFMT_MONAURAL, 0, {1, 65536}},
111 	{NULL, AUMODE_PLAY, AUDIO_ENCODING_SLINEAR_LE, 8, 8,
112 	 2, AUFMT_STEREO, 0, {1, 65536}},
113 };
114 
115 int aica_match(struct device *, struct cfdata *, void *);
116 void aica_attach(struct device *, struct device *, void *);
117 int aica_print(void *, const char *);
118 
119 CFATTACH_DECL(aica, sizeof(struct aica_softc), aica_match, aica_attach,
120     NULL, NULL);
121 
122 const struct audio_device aica_device = {
123 	"Dreamcast Sound",
124 	"",
125 	"aica"
126 };
127 
128 inline static void aica_g2fifo_wait(void);
129 void aica_enable(struct aica_softc *);
130 void aica_disable(struct aica_softc *);
131 void aica_memwrite(struct aica_softc *, bus_size_t, uint32_t *, int);
132 void aica_ch2p16write(struct aica_softc *, bus_size_t, uint16_t *, int);
133 void aica_ch2p8write(struct aica_softc *, bus_size_t, uint8_t *, int);
134 void aica_command(struct aica_softc *, uint32_t);
135 void aica_sendparam(struct aica_softc *, uint32_t, int, int);
136 void aica_play(struct aica_softc *, int, int, int, int);
137 void aica_fillbuffer(struct aica_softc *);
138 
139 /* intr */
140 int aica_intr(void *);
141 
142 /* for audio */
143 int aica_open(void *, int);
144 void aica_close(void *);
145 int aica_query_encoding(void *, struct audio_encoding *);
146 int aica_set_params(void *, int, int, audio_params_t *,
147     audio_params_t *, stream_filter_list_t *, stream_filter_list_t *);
148 int aica_round_blocksize(void *, int, int, const audio_params_t *);
149 size_t aica_round_buffersize(void *, int, size_t);
150 int aica_trigger_output(void *, void *, void *, int, void (*)(void *), void *,
151     const audio_params_t *);
152 int aica_trigger_input(void *, void *, void *, int, void (*)(void *), void *,
153     const audio_params_t *);
154 int aica_halt_output(void *);
155 int aica_halt_input(void *);
156 int aica_getdev(void *, struct audio_device *);
157 int aica_set_port(void *, mixer_ctrl_t *);
158 int aica_get_port(void *, mixer_ctrl_t *);
159 int aica_query_devinfo(void *, mixer_devinfo_t *);
160 void aica_encode(int, int, int, int, u_char *, u_short **);
161 int aica_get_props(void *);
162 
163 const struct audio_hw_if aica_hw_if = {
164 	aica_open,
165 	aica_close,
166 	NULL,				/* aica_drain */
167 	aica_query_encoding,
168 	aica_set_params,
169 	aica_round_blocksize,
170 	NULL,				/* aica_commit_setting */
171 	NULL,				/* aica_init_output */
172 	NULL,				/* aica_init_input */
173 	NULL,				/* aica_start_output */
174 	NULL,				/* aica_start_input */
175 	aica_halt_output,
176 	aica_halt_input,
177 	NULL,				/* aica_speaker_ctl */
178 	aica_getdev,
179 	NULL,				/* aica_setfd */
180 	aica_set_port,
181 	aica_get_port,
182 	aica_query_devinfo,
183 	NULL,				/* aica_allocm */
184 	NULL,				/* aica_freem */
185 
186 	aica_round_buffersize,		/* aica_round_buffersize */
187 
188 	NULL,				/* aica_mappage */
189 	aica_get_props,
190 	aica_trigger_output,
191 	aica_trigger_input,
192 	NULL,				/* aica_dev_ioctl */
193 };
194 
195 int
196 aica_match(struct device *parent, struct cfdata *cf, void *aux)
197 {
198 	static int aica_matched = 0;
199 
200 	if (aica_matched)
201 		return 0;
202 
203 	aica_matched = 1;
204 	return 1;
205 }
206 
207 void
208 aica_attach(struct device *parent, struct device *self, void *aux)
209 {
210 	struct aica_softc *sc;
211 	struct g2bus_attach_args *ga;
212 	int i;
213 
214 	sc = (struct aica_softc *)self;
215 	ga = aux;
216 	sc->sc_memt = ga->ga_memt;
217 
218 	if (bus_space_map(sc->sc_memt, AICA_REG_ADDR, 0x3000, 0,
219 	    &sc->sc_aica_regh) != 0) {
220 		printf(": can't map AICA register space\n");
221 		return;
222 	}
223 
224 	if (bus_space_map(sc->sc_memt, AICA_RAM_START, AICA_RAM_SIZE, 0,
225 	    &sc->sc_aica_memh) != 0) {
226 		printf(": can't map AICA memory space\n");
227 		return;
228 	}
229 
230 	printf(": ARM7 Sound Processing Unit\n");
231 
232 	aica_disable(sc);
233 
234 	for (i = 0; i < AICA_NCHAN; i++)
235 		bus_space_write_4(sc->sc_memt,sc->sc_aica_regh, i << 7,
236 		    ((bus_space_read_4(sc->sc_memt, sc->sc_aica_regh, i << 7)
237 		    & ~0x4000) | 0x8000));
238 
239 	/* load microcode, and clear memory */
240 	bus_space_set_region_4(sc->sc_memt, sc->sc_aica_memh,
241 	    0, 0, AICA_RAM_SIZE);
242 
243 	aica_memwrite(sc, 0, aica_armcode, sizeof(aica_armcode));
244 
245 	aica_enable(sc);
246 
247 	printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname,
248 	    sysasic_intr_string(IPL_BIO));
249 	sysasic_intr_establish(SYSASIC_EVENT_AICA, IPL_BIO, aica_intr, sc);
250 
251 	audio_attach_mi(&aica_hw_if, sc, &sc->sc_dev);
252 
253 	/* init parameters */
254 	sc->sc_output_master = 255;
255 	sc->sc_output_gain[AICA_VOLUME_LEFT]  = 255;
256 	sc->sc_output_gain[AICA_VOLUME_RIGHT] = 255;
257 }
258 
259 void
260 aica_enable(struct aica_softc *sc)
261 {
262 
263 	bus_space_write_4(sc->sc_memt, sc->sc_aica_regh, 0x28a8, 24);
264 	bus_space_write_4(sc->sc_memt, sc->sc_aica_regh, 0x2c00,
265 	    bus_space_read_4(sc->sc_memt, sc->sc_aica_regh, 0x2c00) & ~1);
266 }
267 
268 void
269 aica_disable(struct aica_softc *sc)
270 {
271 
272 	bus_space_write_4(sc->sc_memt, sc->sc_aica_regh, 0x2c00,
273 	    bus_space_read_4(sc->sc_memt, sc->sc_aica_regh, 0x2c00) | 1);
274 }
275 
276 inline static void
277 aica_g2fifo_wait(void)
278 {
279 	int i;
280 
281 	i = AICA_TIMEOUT;
282 	while (--i > 0)
283 		if ((*(volatile uint32_t *)0xa05f688c) & 0x11)
284 			break;
285 }
286 
287 void
288 aica_memwrite(struct aica_softc *sc, bus_size_t offset, uint32_t *src, int len)
289 {
290 	int n;
291 
292 	KASSERT((offset & 3) == 0);
293 	n = (len + 3) / 4;	/* uint32_t * n (aligned) */
294 
295 	aica_g2fifo_wait();
296 	bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh,
297 	    offset, src, n);
298 }
299 
300 void
301 aica_ch2p16write(struct aica_softc *sc, bus_size_t offset, uint16_t *src,
302     int len)
303 {
304 	union {
305 		uint32_t w[8];
306 		uint16_t s[16];
307 	} buf;
308 	uint16_t *p;
309 	int i;
310 
311 	KASSERT((offset & 3) == 0);
312 
313 	while (len >= 32) {
314 		p = buf.s;
315 		*p++ = *src++; src++;
316 		*p++ = *src++; src++;
317 		*p++ = *src++; src++;
318 		*p++ = *src++; src++;
319 		*p++ = *src++; src++;
320 		*p++ = *src++; src++;
321 		*p++ = *src++; src++;
322 		*p++ = *src++; src++;
323 		*p++ = *src++; src++;
324 		*p++ = *src++; src++;
325 		*p++ = *src++; src++;
326 		*p++ = *src++; src++;
327 		*p++ = *src++; src++;
328 		*p++ = *src++; src++;
329 		*p++ = *src++; src++;
330 		*p++ = *src++; src++;
331 
332 		aica_g2fifo_wait();
333 		bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh,
334 		    offset, buf.w , 32 / 4);
335 
336 		offset += sizeof(uint16_t) * 16;
337 		len -= 32;
338 	}
339 
340 	if (len / 2 > 0) {
341 		p = buf.s;
342 		for (i = 0; i < len / 2; i++) {
343 			*p++ = *src++; src++;
344 		}
345 
346 		aica_g2fifo_wait();
347 		bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh,
348 		    offset, buf.w, len / 4);
349 	}
350 }
351 
352 void
353 aica_ch2p8write(struct aica_softc *sc, bus_size_t offset, uint8_t *src,
354     int len)
355 {
356 	uint32_t buf[8];
357 	uint8_t *p;
358 	int i;
359 
360 	KASSERT((offset & 3) == 0);
361 	while (len >= 32) {
362 		p = (uint8_t *)buf;
363 
364 		*p++ = *src++; src++;
365 		*p++ = *src++; src++;
366 		*p++ = *src++; src++;
367 		*p++ = *src++; src++;
368 		*p++ = *src++; src++;
369 		*p++ = *src++; src++;
370 		*p++ = *src++; src++;
371 		*p++ = *src++; src++;
372 		*p++ = *src++; src++;
373 		*p++ = *src++; src++;
374 		*p++ = *src++; src++;
375 		*p++ = *src++; src++;
376 		*p++ = *src++; src++;
377 		*p++ = *src++; src++;
378 		*p++ = *src++; src++;
379 		*p++ = *src++; src++;
380 		*p++ = *src++; src++;
381 		*p++ = *src++; src++;
382 		*p++ = *src++; src++;
383 		*p++ = *src++; src++;
384 		*p++ = *src++; src++;
385 		*p++ = *src++; src++;
386 		*p++ = *src++; src++;
387 		*p++ = *src++; src++;
388 		*p++ = *src++; src++;
389 		*p++ = *src++; src++;
390 		*p++ = *src++; src++;
391 		*p++ = *src++; src++;
392 		*p++ = *src++; src++;
393 		*p++ = *src++; src++;
394 		*p++ = *src++; src++;
395 		*p++ = *src++; src++;
396 
397 		aica_g2fifo_wait();
398 		bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh,
399 		    offset, buf, 32 / 4);
400 
401 		offset += 32;
402 		len -= 32;
403 	}
404 
405 	if (len) {
406 		p = (uint8_t *)buf;
407 		for (i = 0; i < len; i++)
408 			*p++ = *src++; src++;
409 
410 		aica_g2fifo_wait();
411 		bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh,
412 		    offset, buf, len / 4);
413 	}
414 }
415 
416 int
417 aica_open(void *addr, int flags)
418 {
419 	struct aica_softc *sc;
420 
421 	sc = addr;
422 	if (sc->sc_open)
423 		return EBUSY;
424 
425 	sc->sc_intr = NULL;
426 	sc->sc_open = 1;
427 
428 	return 0;
429 }
430 
431 void
432 aica_close(void *addr)
433 {
434 	struct aica_softc *sc;
435 
436 	sc = addr;
437 	sc->sc_open = 0;
438 	sc->sc_intr = NULL;
439 }
440 
441 int
442 aica_query_encoding(void *addr, struct audio_encoding *fp)
443 {
444 	if (fp->index >= sizeof(aica_encodings) / sizeof(aica_encodings[0]))
445 		return EINVAL;
446 
447 	strcpy(fp->name, aica_encodings[fp->index].name);
448 	fp->encoding = aica_encodings[fp->index].encoding;
449 	fp->precision = aica_encodings[fp->index].precision;
450 	fp->flags = 0;
451 
452 	return 0;
453 }
454 
455 int
456 aica_set_params(void *addr, int setmode, int usemode,
457     audio_params_t *play, audio_params_t *rec,
458     stream_filter_list_t *pfil, stream_filter_list_t *rfil)
459 {
460 	struct aica_softc *sc;
461 	const audio_params_t *hw;
462 	int i;
463 
464 	i = auconv_set_converter(aica_formats, AICA_NFORMATS,
465 				 AUMODE_PLAY, play, FALSE, pfil);
466 	if (i < 0)
467 		return EINVAL;
468 	hw = pfil->req_size > 0 ? &pfil->filters[0].param : play;
469 	sc = addr;
470 	sc->sc_precision = hw->precision;
471 	sc->sc_channels = hw->channels;
472 	sc->sc_rate = hw->sample_rate;
473 	sc->sc_encodings = hw->encoding;
474 	return 0;
475 }
476 
477 int
478 aica_round_blocksize(void *addr, int blk, int mode, const audio_params_t *param)
479 {
480 	struct aica_softc *sc;
481 
482 	sc = addr;
483 	switch (sc->sc_precision) {
484 	case 4:
485 		if (sc->sc_channels == 1)
486 			return AICA_DMABUF_SIZE / 4;
487 		else
488 			return AICA_DMABUF_SIZE / 2;
489 		break;
490 	case 8:
491 		if (sc->sc_channels == 1)
492 			return AICA_DMABUF_SIZE / 2;
493 		else
494 			return AICA_DMABUF_SIZE;
495 		break;
496 	case 16:
497 		if (sc->sc_channels == 1)
498 			return AICA_DMABUF_SIZE;
499 		else
500 			return AICA_DMABUF_SIZE * 2;
501 		break;
502 	default:
503 		break;
504 	}
505 
506 	return AICA_DMABUF_SIZE / 4;
507 }
508 
509 size_t
510 aica_round_buffersize(void *addr, int dir, size_t bufsize)
511 {
512 
513 	if (dir == AUMODE_PLAY)
514 		return 65536;
515 
516 	return 512;	/* XXX: AUMINBUF */
517 }
518 
519 void
520 aica_command(struct aica_softc *sc, uint32_t command)
521 {
522 
523 	bus_space_write_4(sc->sc_memt, sc->sc_aica_memh,
524 	    AICA_ARM_CMD_COMMAND, command);
525 	bus_space_write_4(sc->sc_memt,sc->sc_aica_memh, AICA_ARM_CMD_SERIAL,
526 	    bus_space_read_4(sc->sc_memt, sc->sc_aica_memh,
527 	    AICA_ARM_CMD_SERIAL) + 1);
528 }
529 
530 void
531 aica_sendparam(struct aica_softc *sc, uint32_t command,
532     int32_t lparam, int32_t rparam)
533 {
534 
535 	bus_space_write_4(sc->sc_memt,sc->sc_aica_memh,
536 	    AICA_ARM_CMD_LPARAM, lparam);
537 	bus_space_write_4(sc->sc_memt,sc->sc_aica_memh,
538 	    AICA_ARM_CMD_RPARAM, rparam);
539 
540 	aica_command(sc, command);
541 }
542 
543 void
544 aica_play(struct aica_softc *sc, int blksize, int channel, int rate, int prec)
545 {
546 
547 	bus_space_write_4(sc->sc_memt,sc->sc_aica_memh,
548 	    AICA_ARM_CMD_BLOCKSIZE, blksize);
549 	bus_space_write_4(sc->sc_memt,sc->sc_aica_memh,
550 	    AICA_ARM_CMD_CHANNEL, channel);
551 	bus_space_write_4(sc->sc_memt,sc->sc_aica_memh,
552 	    AICA_ARM_CMD_RATE, rate);
553 	bus_space_write_4(sc->sc_memt,sc->sc_aica_memh,
554 	    AICA_ARM_CMD_PRECISION, prec);
555 
556 	aica_command(sc, AICA_COMMAND_PLAY);
557 }
558 
559 void
560 aica_fillbuffer(struct aica_softc *sc)
561 {
562 
563 	if (sc->sc_channels == 2) {
564 		if (sc->sc_precision == 16) {
565 			aica_ch2p16write(sc,
566 			    AICA_DMABUF_LEFT + sc->sc_nextfill,
567 			    (uint16_t *)sc->sc_buffer + 0, sc->sc_blksize / 2);
568 			aica_ch2p16write(sc,
569 			    AICA_DMABUF_RIGHT + sc->sc_nextfill,
570 			    (uint16_t *)sc->sc_buffer + 1, sc->sc_blksize / 2);
571 		} else if (sc->sc_precision == 8) {
572 			aica_ch2p8write(sc, AICA_DMABUF_LEFT + sc->sc_nextfill,
573 			    (uint8_t *)sc->sc_buffer + 0, sc->sc_blksize / 2);
574 			aica_ch2p8write(sc, AICA_DMABUF_RIGHT + sc->sc_nextfill,
575 			    (uint8_t *)sc->sc_buffer + 1, sc->sc_blksize / 2);
576 		}
577 	} else {
578 		aica_memwrite(sc, AICA_DMABUF_MONO + sc->sc_nextfill,
579 		    sc->sc_buffer, sc->sc_blksize);
580 	}
581 
582 	(int8_t *)sc->sc_buffer += sc->sc_blksize;
583 	if (sc->sc_buffer >= sc->sc_buffer_end)
584 		sc->sc_buffer = sc->sc_buffer_start;
585 
586 	sc->sc_nextfill ^= sc->sc_blksize / sc->sc_channels;
587 }
588 
589 int
590 aica_intr(void *arg)
591 {
592 	struct aica_softc *sc;
593 
594 	sc = arg;
595 	aica_fillbuffer(sc);
596 
597 	/* call audio interrupt handler (audio_pint()) */
598 	if (sc->sc_open && sc->sc_intr != NULL) {
599 		(*(sc->sc_intr))(sc->sc_intr_arg);
600 	}
601 
602 	/* clear SPU interrupt */
603 	bus_space_write_4(sc->sc_memt, sc->sc_aica_regh, 0x28bc, 0x20);
604 	return 1;
605 }
606 
607 int
608 aica_trigger_output(void *addr, void *start, void *end, int blksize,
609     void (*intr)(void *), void *arg, const audio_params_t *param)
610 {
611 	struct aica_softc *sc;
612 
613 	sc = addr;
614 	aica_command(sc, AICA_COMMAND_INIT);
615 	tsleep(aica_trigger_output, PWAIT, "aicawait", hz / 20);
616 
617 	sc->sc_buffer_start = sc->sc_buffer = start;
618 	sc->sc_buffer_end = end;
619 	sc->sc_blksize = blksize;
620 	sc->sc_nextfill = 0;
621 
622 	sc->sc_intr = intr;
623 	sc->sc_intr_arg = arg;
624 
625 	/* fill buffers in advance */
626 	aica_intr(sc);
627 	aica_intr(sc);
628 
629 	/* ...and start playing */
630 	aica_play(sc, blksize / sc->sc_channels, sc->sc_channels, sc->sc_rate,
631 	    sc->sc_precision);
632 
633 	return 0;
634 }
635 
636 int
637 aica_trigger_input(void *addr, void *start, void *end, int blksize,
638     void (*intr)(void *), void *arg, const audio_params_t *param)
639 {
640 
641 	return ENODEV;
642 }
643 
644 int
645 aica_halt_output(void *addr)
646 {
647 	struct aica_softc *sc;
648 
649 	sc = addr;
650 	aica_command(sc, AICA_COMMAND_STOP);
651 	return 0;
652 }
653 
654 int
655 aica_halt_input(void *addr)
656 {
657 
658 	return ENODEV;
659 }
660 
661 int
662 aica_getdev(void *addr, struct audio_device *ret)
663 {
664 
665 	*ret = aica_device;
666 	return 0;
667 }
668 
669 int
670 aica_set_port(void *addr, mixer_ctrl_t *mc)
671 {
672 	struct aica_softc *sc;
673 
674 	sc = addr;
675 	switch (mc->dev) {
676 	case AICA_MASTER_VOL:
677 		sc->sc_output_master =
678 		    mc->un.value.level[AUDIO_MIXER_LEVEL_MONO] & 0xff;
679 		aica_sendparam(sc, AICA_COMMAND_MVOL,
680 		    sc->sc_output_master, sc->sc_output_master);
681 		break;
682 	case AICA_OUTPUT_GAIN:
683 		sc->sc_output_gain[AICA_VOLUME_LEFT] =
684 		    mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT]  & 0xff;
685 		sc->sc_output_gain[AICA_VOLUME_RIGHT] =
686 		    mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] & 0xff;
687 		aica_sendparam(sc, AICA_COMMAND_VOL,
688 		    sc->sc_output_gain[AICA_VOLUME_LEFT],
689 		    sc->sc_output_gain[AICA_VOLUME_RIGHT]);
690 		break;
691 	default:
692 		return EINVAL;
693 	}
694 
695 	return 0;
696 }
697 
698 int
699 aica_get_port(void *addr, mixer_ctrl_t *mc)
700 {
701 	struct aica_softc *sc;
702 
703 	sc = addr;
704 	switch (mc->dev) {
705 	case AICA_MASTER_VOL:
706 		if (mc->un.value.num_channels != 1)
707 			return EINVAL;
708 		mc->un.value.level[AUDIO_MIXER_LEVEL_MONO] =
709 		    L16TO256(L256TO16(sc->sc_output_master));
710 		break;
711 	case AICA_OUTPUT_GAIN:
712 		mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT] =
713 		    sc->sc_output_gain[AICA_VOLUME_LEFT];
714 		mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] =
715 		    sc->sc_output_gain[AICA_VOLUME_RIGHT];
716 		break;
717 	default:
718 		return EINVAL;
719 	}
720 	return 0;
721 }
722 
723 int
724 aica_query_devinfo(void *addr, mixer_devinfo_t *md)
725 {
726 
727 	switch (md->index) {
728 	case AICA_MASTER_VOL:
729 		md->type = AUDIO_MIXER_VALUE;
730 		md->mixer_class = AICA_OUTPUT_CLASS;
731 		md->prev = md->next = AUDIO_MIXER_LAST;
732 		strcpy(md->label.name, AudioNmaster);
733 		md->un.v.num_channels = 1;
734 		strcpy(md->un.v.units.name, AudioNvolume);
735 		return 0;
736 	case AICA_OUTPUT_GAIN:
737 		md->type = AUDIO_MIXER_VALUE;
738 		md->mixer_class = AICA_OUTPUT_CLASS;
739 		md->prev = md->next = AUDIO_MIXER_LAST;
740 		strcpy(md->label.name, AudioNoutput);
741 		md->un.v.num_channels = 2;
742 		strcpy(md->label.name, AudioNvolume);
743 		return 0;
744 	case AICA_OUTPUT_CLASS:
745 		md->type = AUDIO_MIXER_CLASS;
746 		md->mixer_class = AICA_OUTPUT_CLASS;
747 		md->next = md->prev = AUDIO_MIXER_LAST;
748 		strcpy(md->label.name, AudioCoutputs);
749 		return 0;
750 	}
751 
752 	return ENXIO;
753 }
754 
755 int
756 aica_get_props(void *addr)
757 {
758 
759 	return 0;
760 }
761