xref: /netbsd-src/sys/arch/dreamcast/dev/g2/aica.c (revision 6a493d6bc668897c91594964a732d38505b70cbb)
1 /*	$NetBSD: aica.c,v 1.22 2011/11/23 23:07:29 jmcneill 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 1.22 2011/11/23 23:07:29 jmcneill Exp $");
33 
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/device.h>
37 #include <sys/kernel.h>
38 #include <sys/proc.h>
39 #include <sys/audioio.h>
40 #include <sys/bus.h>
41 
42 #include <dev/audio_if.h>
43 #include <dev/mulaw.h>
44 #include <dev/auconv.h>
45 
46 #include <machine/sysasicvar.h>
47 
48 #include <dreamcast/dev/g2/g2busvar.h>
49 #include <dreamcast/dev/g2/aicavar.h>
50 #include <dreamcast/dev/microcode/aica_armcode.h>
51 
52 #define	AICA_REG_ADDR	0x00700000
53 #define	AICA_RAM_START	0x00800000
54 #define	AICA_RAM_SIZE	0x00200000
55 #define	AICA_NCHAN	64
56 #define	AICA_TIMEOUT	0x1800
57 
58 struct aica_softc {
59 	device_t		sc_dev;		/* base device */
60 	kmutex_t		sc_lock;
61 	kmutex_t		sc_intr_lock;
62 	bus_space_tag_t		sc_memt;
63 	bus_space_handle_t	sc_aica_regh;
64 	bus_space_handle_t	sc_aica_memh;
65 
66 	/* audio property */
67 	int			sc_open;
68 	int			sc_encodings;
69 	int			sc_precision;
70 	int			sc_channels;
71 	int			sc_rate;
72 	void			(*sc_intr)(void *);
73 	void			*sc_intr_arg;
74 
75 	int			sc_output_master;
76 	int			sc_output_gain[2];
77 #define	AICA_VOLUME_LEFT	0
78 #define	AICA_VOLUME_RIGHT	1
79 
80 	/* work for output */
81 	void			*sc_buffer;
82 	void			*sc_buffer_start;
83 	void			*sc_buffer_end;
84 	int			sc_blksize;
85 	int			sc_nextfill;
86 };
87 
88 const struct {
89 	const char *name;
90 	int	encoding;
91 	int	precision;
92 } aica_encodings[] = {
93 	{AudioEadpcm,		AUDIO_ENCODING_ADPCM,		4},
94 	{AudioEslinear,		AUDIO_ENCODING_SLINEAR,		8},
95 	{AudioEulinear,		AUDIO_ENCODING_ULINEAR,		8},
96 	{AudioEmulaw,		AUDIO_ENCODING_ULAW,		8},
97 	{AudioEalaw,		AUDIO_ENCODING_ALAW,		8},
98 	{AudioEslinear_be,	AUDIO_ENCODING_SLINEAR_BE,	16},
99 	{AudioEslinear_le,	AUDIO_ENCODING_SLINEAR_LE,	16},
100 	{AudioEulinear_be,	AUDIO_ENCODING_ULINEAR_BE,	16},
101 	{AudioEulinear_le,	AUDIO_ENCODING_ULINEAR_LE,	16},
102 };
103 
104 #define AICA_NFORMATS	5
105 static const struct audio_format aica_formats[AICA_NFORMATS] = {
106 	{NULL, AUMODE_PLAY, AUDIO_ENCODING_ADPCM, 4, 4,
107 	 1, AUFMT_MONAURAL, 0, {1, 65536}},
108 	{NULL, AUMODE_PLAY, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
109 	 1, AUFMT_MONAURAL, 0, {1, 65536}},
110 	{NULL, AUMODE_PLAY, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
111 	 2, AUFMT_STEREO, 0, {1, 65536}},
112 	{NULL, AUMODE_PLAY, AUDIO_ENCODING_SLINEAR_LE, 8, 8,
113 	 1, AUFMT_MONAURAL, 0, {1, 65536}},
114 	{NULL, AUMODE_PLAY, AUDIO_ENCODING_SLINEAR_LE, 8, 8,
115 	 2, AUFMT_STEREO, 0, {1, 65536}},
116 };
117 
118 int aica_match(device_t, cfdata_t, void *);
119 void aica_attach(device_t, device_t, void *);
120 int aica_print(void *, const char *);
121 
122 CFATTACH_DECL_NEW(aica, sizeof(struct aica_softc), aica_match, aica_attach,
123     NULL, NULL);
124 
125 const struct audio_device aica_device = {
126 	"Dreamcast Sound",
127 	"",
128 	"aica"
129 };
130 
131 inline static void aica_g2fifo_wait(void);
132 void aica_enable(struct aica_softc *);
133 void aica_disable(struct aica_softc *);
134 void aica_memwrite(struct aica_softc *, bus_size_t, uint32_t *, int);
135 void aica_ch2p16write(struct aica_softc *, bus_size_t, uint16_t *, int);
136 void aica_ch2p8write(struct aica_softc *, bus_size_t, uint8_t *, int);
137 void aica_command(struct aica_softc *, uint32_t);
138 void aica_sendparam(struct aica_softc *, uint32_t, int, int);
139 void aica_play(struct aica_softc *, int, int, int, int);
140 void aica_fillbuffer(struct aica_softc *);
141 
142 /* intr */
143 int aica_intr(void *);
144 
145 /* for audio */
146 int aica_open(void *, int);
147 void aica_close(void *);
148 int aica_query_encoding(void *, struct audio_encoding *);
149 int aica_set_params(void *, int, int, audio_params_t *,
150     audio_params_t *, stream_filter_list_t *, stream_filter_list_t *);
151 int aica_round_blocksize(void *, int, int, const audio_params_t *);
152 size_t aica_round_buffersize(void *, int, size_t);
153 int aica_trigger_output(void *, void *, void *, int, void (*)(void *), void *,
154     const audio_params_t *);
155 int aica_trigger_input(void *, void *, void *, int, void (*)(void *), void *,
156     const audio_params_t *);
157 int aica_halt_output(void *);
158 int aica_halt_input(void *);
159 int aica_getdev(void *, struct audio_device *);
160 int aica_set_port(void *, mixer_ctrl_t *);
161 int aica_get_port(void *, mixer_ctrl_t *);
162 int aica_query_devinfo(void *, mixer_devinfo_t *);
163 void aica_encode(int, int, int, int, u_char *, u_short **);
164 int aica_get_props(void *);
165 void aica_get_locks(void *, kmutex_t **, kmutex_t **);
166 
167 const struct audio_hw_if aica_hw_if = {
168 	aica_open,
169 	aica_close,
170 	NULL,				/* aica_drain */
171 	aica_query_encoding,
172 	aica_set_params,
173 	aica_round_blocksize,
174 	NULL,				/* aica_commit_setting */
175 	NULL,				/* aica_init_output */
176 	NULL,				/* aica_init_input */
177 	NULL,				/* aica_start_output */
178 	NULL,				/* aica_start_input */
179 	aica_halt_output,
180 	aica_halt_input,
181 	NULL,				/* aica_speaker_ctl */
182 	aica_getdev,
183 	NULL,				/* aica_setfd */
184 	aica_set_port,
185 	aica_get_port,
186 	aica_query_devinfo,
187 	NULL,				/* aica_allocm */
188 	NULL,				/* aica_freem */
189 
190 	aica_round_buffersize,		/* aica_round_buffersize */
191 
192 	NULL,				/* aica_mappage */
193 	aica_get_props,
194 	aica_trigger_output,
195 	aica_trigger_input,
196 	NULL,				/* aica_dev_ioctl */
197 	aica_get_locks,
198 };
199 
200 int
201 aica_match(device_t parent, cfdata_t cf, void *aux)
202 {
203 	static int aica_matched = 0;
204 
205 	if (aica_matched)
206 		return 0;
207 
208 	aica_matched = 1;
209 	return 1;
210 }
211 
212 void
213 aica_attach(device_t parent, device_t self, void *aux)
214 {
215 	struct aica_softc *sc;
216 	struct g2bus_attach_args *ga;
217 	int i;
218 
219 	sc = device_private(self);
220 	ga = aux;
221 	sc->sc_dev = self;
222 	sc->sc_memt = ga->ga_memt;
223 
224 	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
225 	mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_SCHED);
226 
227 	if (bus_space_map(sc->sc_memt, AICA_REG_ADDR, 0x3000, 0,
228 	    &sc->sc_aica_regh) != 0) {
229 		aprint_error(": can't map AICA register space\n");
230 		return;
231 	}
232 
233 	if (bus_space_map(sc->sc_memt, AICA_RAM_START, AICA_RAM_SIZE, 0,
234 	    &sc->sc_aica_memh) != 0) {
235 		aprint_error(": can't map AICA memory space\n");
236 		return;
237 	}
238 
239 	aprint_normal(": ARM7 Sound Processing Unit\n");
240 
241 	aica_disable(sc);
242 
243 	for (i = 0; i < AICA_NCHAN; i++)
244 		bus_space_write_4(sc->sc_memt,sc->sc_aica_regh, i << 7,
245 		    ((bus_space_read_4(sc->sc_memt, sc->sc_aica_regh, i << 7)
246 		    & ~0x4000) | 0x8000));
247 
248 	/* load microcode, and clear memory */
249 	bus_space_set_region_4(sc->sc_memt, sc->sc_aica_memh,
250 	    0, 0, AICA_RAM_SIZE / 4);
251 
252 	aica_memwrite(sc, 0, aica_armcode, sizeof(aica_armcode));
253 
254 	aica_enable(sc);
255 
256 	aprint_normal_dev(self, "interrupting at %s\n",
257 	    sysasic_intr_string(SYSASIC_IRL9));
258 	sysasic_intr_establish(SYSASIC_EVENT_AICA, IPL_BIO, SYSASIC_IRL9,
259 	    aica_intr, sc);
260 
261 	audio_attach_mi(&aica_hw_if, sc, self);
262 
263 	/* init parameters */
264 	sc->sc_output_master = 255;
265 	sc->sc_output_gain[AICA_VOLUME_LEFT]  = 255;
266 	sc->sc_output_gain[AICA_VOLUME_RIGHT] = 255;
267 }
268 
269 void
270 aica_enable(struct aica_softc *sc)
271 {
272 
273 	bus_space_write_4(sc->sc_memt, sc->sc_aica_regh, 0x28a8, 24);
274 	bus_space_write_4(sc->sc_memt, sc->sc_aica_regh, 0x2c00,
275 	    bus_space_read_4(sc->sc_memt, sc->sc_aica_regh, 0x2c00) & ~1);
276 }
277 
278 void
279 aica_disable(struct aica_softc *sc)
280 {
281 
282 	bus_space_write_4(sc->sc_memt, sc->sc_aica_regh, 0x2c00,
283 	    bus_space_read_4(sc->sc_memt, sc->sc_aica_regh, 0x2c00) | 1);
284 }
285 
286 inline static void
287 aica_g2fifo_wait(void)
288 {
289 	int i;
290 
291 	i = AICA_TIMEOUT;
292 	while (--i > 0)
293 		if ((*(volatile uint32_t *)0xa05f688c) & 0x11)
294 			break;
295 }
296 
297 void
298 aica_memwrite(struct aica_softc *sc, bus_size_t offset, uint32_t *src, int len)
299 {
300 	int n;
301 
302 	KASSERT((offset & 3) == 0);
303 	n = (len + 3) / 4;	/* uint32_t * n (aligned) */
304 
305 	aica_g2fifo_wait();
306 	bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh,
307 	    offset, src, n);
308 }
309 
310 void
311 aica_ch2p16write(struct aica_softc *sc, bus_size_t offset, uint16_t *src,
312     int len)
313 {
314 	union {
315 		uint32_t w[8];
316 		uint16_t s[16];
317 	} buf;
318 	uint16_t *p;
319 	int i;
320 
321 	KASSERT((offset & 3) == 0);
322 
323 	while (len >= 32) {
324 		p = buf.s;
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 		*p++ = *src++; src++;
332 		*p++ = *src++; src++;
333 		*p++ = *src++; src++;
334 		*p++ = *src++; src++;
335 		*p++ = *src++; src++;
336 		*p++ = *src++; src++;
337 		*p++ = *src++; src++;
338 		*p++ = *src++; src++;
339 		*p++ = *src++; src++;
340 		*p++ = *src++; src++;
341 
342 		aica_g2fifo_wait();
343 		bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh,
344 		    offset, buf.w , 32 / 4);
345 
346 		offset += sizeof(uint16_t) * 16;
347 		len -= 32;
348 	}
349 
350 	if (len / 2 > 0) {
351 		p = buf.s;
352 		for (i = 0; i < len / 2; i++) {
353 			*p++ = *src++; src++;
354 		}
355 
356 		aica_g2fifo_wait();
357 		bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh,
358 		    offset, buf.w, len / 4);
359 	}
360 }
361 
362 void
363 aica_ch2p8write(struct aica_softc *sc, bus_size_t offset, uint8_t *src,
364     int len)
365 {
366 	uint32_t buf[8];
367 	uint8_t *p;
368 	int i;
369 
370 	KASSERT((offset & 3) == 0);
371 	while (len >= 32) {
372 		p = (uint8_t *)buf;
373 
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 		*p++ = *src++; src++;
397 		*p++ = *src++; src++;
398 		*p++ = *src++; src++;
399 		*p++ = *src++; src++;
400 		*p++ = *src++; src++;
401 		*p++ = *src++; src++;
402 		*p++ = *src++; src++;
403 		*p++ = *src++; src++;
404 		*p++ = *src++; src++;
405 		*p++ = *src++; src++;
406 
407 		aica_g2fifo_wait();
408 		bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh,
409 		    offset, buf, 32 / 4);
410 
411 		offset += 32;
412 		len -= 32;
413 	}
414 
415 	if (len) {
416 		p = (uint8_t *)buf;
417 		for (i = 0; i < len; i++)
418 			*p++ = *src++; src++;
419 
420 		aica_g2fifo_wait();
421 		bus_space_write_region_4(sc->sc_memt, sc->sc_aica_memh,
422 		    offset, buf, len / 4);
423 	}
424 }
425 
426 int
427 aica_open(void *addr, int flags)
428 {
429 	struct aica_softc *sc;
430 
431 	sc = addr;
432 	if (sc->sc_open)
433 		return EBUSY;
434 
435 	sc->sc_intr = NULL;
436 	sc->sc_open = 1;
437 
438 	return 0;
439 }
440 
441 void
442 aica_close(void *addr)
443 {
444 	struct aica_softc *sc;
445 
446 	sc = addr;
447 	sc->sc_open = 0;
448 	sc->sc_intr = NULL;
449 }
450 
451 int
452 aica_query_encoding(void *addr, struct audio_encoding *fp)
453 {
454 	if (fp->index >= sizeof(aica_encodings) / sizeof(aica_encodings[0]))
455 		return EINVAL;
456 
457 	strcpy(fp->name, aica_encodings[fp->index].name);
458 	fp->encoding = aica_encodings[fp->index].encoding;
459 	fp->precision = aica_encodings[fp->index].precision;
460 	fp->flags = 0;
461 
462 	return 0;
463 }
464 
465 int
466 aica_set_params(void *addr, int setmode, int usemode,
467     audio_params_t *play, audio_params_t *rec,
468     stream_filter_list_t *pfil, stream_filter_list_t *rfil)
469 {
470 	struct aica_softc *sc;
471 	const audio_params_t *hw;
472 	int i;
473 
474 	i = auconv_set_converter(aica_formats, AICA_NFORMATS,
475 				 AUMODE_PLAY, play, false, pfil);
476 	if (i < 0)
477 		return EINVAL;
478 	hw = pfil->req_size > 0 ? &pfil->filters[0].param : play;
479 	sc = addr;
480 	sc->sc_precision = hw->precision;
481 	sc->sc_channels = hw->channels;
482 	sc->sc_rate = hw->sample_rate;
483 	sc->sc_encodings = hw->encoding;
484 	return 0;
485 }
486 
487 int
488 aica_round_blocksize(void *addr, int blk, int mode, const audio_params_t *param)
489 {
490 #if 0	/* XXX this has not worked since kent-audio1 merge? */
491 	struct aica_softc *sc;
492 
493 	sc = addr;
494 	switch (sc->sc_precision) {
495 	case 4:
496 		if (sc->sc_channels == 1)
497 			return AICA_DMABUF_SIZE / 4;
498 		else
499 			return AICA_DMABUF_SIZE / 2;
500 		break;
501 	case 8:
502 		if (sc->sc_channels == 1)
503 			return AICA_DMABUF_SIZE / 2;
504 		else
505 			return AICA_DMABUF_SIZE;
506 		break;
507 	case 16:
508 		if (sc->sc_channels == 1)
509 			return AICA_DMABUF_SIZE;
510 		else
511 			return AICA_DMABUF_SIZE * 2;
512 		break;
513 	default:
514 		break;
515 	}
516 
517 #endif
518 	return AICA_DMABUF_SIZE / 4;
519 }
520 
521 size_t
522 aica_round_buffersize(void *addr, int dir, size_t bufsize)
523 {
524 
525 	if (dir == AUMODE_PLAY)
526 		return 65536;
527 
528 	return 512;	/* XXX: AUMINBUF */
529 }
530 
531 void
532 aica_command(struct aica_softc *sc, uint32_t command)
533 {
534 
535 	bus_space_write_4(sc->sc_memt, sc->sc_aica_memh,
536 	    AICA_ARM_CMD_COMMAND, command);
537 	bus_space_write_4(sc->sc_memt,sc->sc_aica_memh, AICA_ARM_CMD_SERIAL,
538 	    bus_space_read_4(sc->sc_memt, sc->sc_aica_memh,
539 	    AICA_ARM_CMD_SERIAL) + 1);
540 }
541 
542 void
543 aica_sendparam(struct aica_softc *sc, uint32_t command,
544     int32_t lparam, int32_t rparam)
545 {
546 
547 	bus_space_write_4(sc->sc_memt,sc->sc_aica_memh,
548 	    AICA_ARM_CMD_LPARAM, lparam);
549 	bus_space_write_4(sc->sc_memt,sc->sc_aica_memh,
550 	    AICA_ARM_CMD_RPARAM, rparam);
551 
552 	aica_command(sc, command);
553 }
554 
555 void
556 aica_play(struct aica_softc *sc, int blksize, int channel, int rate, int prec)
557 {
558 
559 	bus_space_write_4(sc->sc_memt,sc->sc_aica_memh,
560 	    AICA_ARM_CMD_BLOCKSIZE, blksize);
561 	bus_space_write_4(sc->sc_memt,sc->sc_aica_memh,
562 	    AICA_ARM_CMD_CHANNEL, channel);
563 	bus_space_write_4(sc->sc_memt,sc->sc_aica_memh,
564 	    AICA_ARM_CMD_RATE, rate);
565 	bus_space_write_4(sc->sc_memt,sc->sc_aica_memh,
566 	    AICA_ARM_CMD_PRECISION, prec);
567 
568 	aica_command(sc, AICA_COMMAND_PLAY);
569 }
570 
571 void
572 aica_fillbuffer(struct aica_softc *sc)
573 {
574 
575 	if (sc->sc_channels == 2) {
576 		if (sc->sc_precision == 16) {
577 			aica_ch2p16write(sc,
578 			    AICA_DMABUF_LEFT + sc->sc_nextfill,
579 			    (uint16_t *)sc->sc_buffer + 0, sc->sc_blksize / 2);
580 			aica_ch2p16write(sc,
581 			    AICA_DMABUF_RIGHT + sc->sc_nextfill,
582 			    (uint16_t *)sc->sc_buffer + 1, sc->sc_blksize / 2);
583 		} else if (sc->sc_precision == 8) {
584 			aica_ch2p8write(sc, AICA_DMABUF_LEFT + sc->sc_nextfill,
585 			    (uint8_t *)sc->sc_buffer + 0, sc->sc_blksize / 2);
586 			aica_ch2p8write(sc, AICA_DMABUF_RIGHT + sc->sc_nextfill,
587 			    (uint8_t *)sc->sc_buffer + 1, sc->sc_blksize / 2);
588 		}
589 	} else {
590 		aica_memwrite(sc, AICA_DMABUF_MONO + sc->sc_nextfill,
591 		    sc->sc_buffer, sc->sc_blksize);
592 	}
593 
594 	sc->sc_buffer = (int8_t *)sc->sc_buffer + sc->sc_blksize;
595 	if (sc->sc_buffer >= sc->sc_buffer_end)
596 		sc->sc_buffer = sc->sc_buffer_start;
597 
598 	sc->sc_nextfill ^= sc->sc_blksize / sc->sc_channels;
599 }
600 
601 int
602 aica_intr(void *arg)
603 {
604 	struct aica_softc *sc;
605 
606 	sc = arg;
607 
608 	mutex_spin_enter(&sc->sc_intr_lock);
609 
610 	aica_fillbuffer(sc);
611 
612 	/* call audio interrupt handler (audio_pint()) */
613 	if (sc->sc_open && sc->sc_intr != NULL) {
614 		(*(sc->sc_intr))(sc->sc_intr_arg);
615 	}
616 
617 	/* clear SPU interrupt */
618 	bus_space_write_4(sc->sc_memt, sc->sc_aica_regh, 0x28bc, 0x20);
619 
620 	mutex_spin_exit(&sc->sc_intr_lock);
621 
622 	return 1;
623 }
624 
625 int
626 aica_trigger_output(void *addr, void *start, void *end, int blksize,
627     void (*intr)(void *), void *arg, const audio_params_t *param)
628 {
629 	struct aica_softc *sc;
630 
631 	sc = addr;
632 	aica_command(sc, AICA_COMMAND_INIT);
633 	tsleep(aica_trigger_output, PWAIT, "aicawait", hz / 20);
634 
635 	sc->sc_buffer_start = sc->sc_buffer = start;
636 	sc->sc_buffer_end = end;
637 	sc->sc_blksize = blksize;
638 	sc->sc_nextfill = 0;
639 
640 	sc->sc_intr = intr;
641 	sc->sc_intr_arg = arg;
642 
643 	/* fill buffers in advance */
644 	aica_intr(sc);
645 	aica_intr(sc);
646 
647 	/* ...and start playing */
648 	aica_play(sc, blksize / sc->sc_channels, sc->sc_channels, sc->sc_rate,
649 	    sc->sc_precision);
650 
651 	return 0;
652 }
653 
654 int
655 aica_trigger_input(void *addr, void *start, void *end, int blksize,
656     void (*intr)(void *), void *arg, const audio_params_t *param)
657 {
658 
659 	return ENODEV;
660 }
661 
662 int
663 aica_halt_output(void *addr)
664 {
665 	struct aica_softc *sc;
666 
667 	sc = addr;
668 	aica_command(sc, AICA_COMMAND_STOP);
669 	return 0;
670 }
671 
672 int
673 aica_halt_input(void *addr)
674 {
675 
676 	return ENODEV;
677 }
678 
679 int
680 aica_getdev(void *addr, struct audio_device *ret)
681 {
682 
683 	*ret = aica_device;
684 	return 0;
685 }
686 
687 int
688 aica_set_port(void *addr, mixer_ctrl_t *mc)
689 {
690 	struct aica_softc *sc;
691 
692 	sc = addr;
693 	switch (mc->dev) {
694 	case AICA_MASTER_VOL:
695 		sc->sc_output_master =
696 		    mc->un.value.level[AUDIO_MIXER_LEVEL_MONO] & 0xff;
697 		aica_sendparam(sc, AICA_COMMAND_MVOL,
698 		    sc->sc_output_master, sc->sc_output_master);
699 		break;
700 	case AICA_OUTPUT_GAIN:
701 		sc->sc_output_gain[AICA_VOLUME_LEFT] =
702 		    mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT]  & 0xff;
703 		sc->sc_output_gain[AICA_VOLUME_RIGHT] =
704 		    mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] & 0xff;
705 		aica_sendparam(sc, AICA_COMMAND_VOL,
706 		    sc->sc_output_gain[AICA_VOLUME_LEFT],
707 		    sc->sc_output_gain[AICA_VOLUME_RIGHT]);
708 		break;
709 	default:
710 		return EINVAL;
711 	}
712 
713 	return 0;
714 }
715 
716 int
717 aica_get_port(void *addr, mixer_ctrl_t *mc)
718 {
719 	struct aica_softc *sc;
720 
721 	sc = addr;
722 	switch (mc->dev) {
723 	case AICA_MASTER_VOL:
724 		if (mc->un.value.num_channels != 1)
725 			return EINVAL;
726 		mc->un.value.level[AUDIO_MIXER_LEVEL_MONO] =
727 		    L16TO256(L256TO16(sc->sc_output_master));
728 		break;
729 	case AICA_OUTPUT_GAIN:
730 		mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT] =
731 		    sc->sc_output_gain[AICA_VOLUME_LEFT];
732 		mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] =
733 		    sc->sc_output_gain[AICA_VOLUME_RIGHT];
734 		break;
735 	default:
736 		return EINVAL;
737 	}
738 	return 0;
739 }
740 
741 int
742 aica_query_devinfo(void *addr, mixer_devinfo_t *md)
743 {
744 
745 	switch (md->index) {
746 	case AICA_MASTER_VOL:
747 		md->type = AUDIO_MIXER_VALUE;
748 		md->mixer_class = AICA_OUTPUT_CLASS;
749 		md->prev = md->next = AUDIO_MIXER_LAST;
750 		strcpy(md->label.name, AudioNmaster);
751 		md->un.v.num_channels = 1;
752 		strcpy(md->un.v.units.name, AudioNvolume);
753 		return 0;
754 	case AICA_OUTPUT_GAIN:
755 		md->type = AUDIO_MIXER_VALUE;
756 		md->mixer_class = AICA_OUTPUT_CLASS;
757 		md->prev = md->next = AUDIO_MIXER_LAST;
758 		strcpy(md->label.name, AudioNoutput);
759 		md->un.v.num_channels = 2;
760 		strcpy(md->label.name, AudioNvolume);
761 		return 0;
762 	case AICA_OUTPUT_CLASS:
763 		md->type = AUDIO_MIXER_CLASS;
764 		md->mixer_class = AICA_OUTPUT_CLASS;
765 		md->next = md->prev = AUDIO_MIXER_LAST;
766 		strcpy(md->label.name, AudioCoutputs);
767 		return 0;
768 	}
769 
770 	return ENXIO;
771 }
772 
773 int
774 aica_get_props(void *addr)
775 {
776 
777 	return 0;
778 }
779 
780 void
781 aica_get_locks(void *addr, kmutex_t **intr, kmutex_t **thread)
782 {
783 	struct aica_softc *sc;
784 
785 	sc = addr;
786 	*intr = &sc->sc_intr_lock;
787 	*thread = &sc->sc_lock;
788 }
789