xref: /freebsd/sys/dev/sound/pci/emu10kx-pcm.c (revision 19261079b74319502c6ffa1249920079f0f69a72)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk>
5  * Copyright (c) 2003-2007 Yuriy Tsibizov <yuriy.tsibizov@gfk.ru>
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
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  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHERIN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * $FreeBSD$
30  */
31 
32 #include <sys/param.h>
33 #include <sys/types.h>
34 #include <sys/bus.h>
35 #include <machine/bus.h>
36 #include <sys/rman.h>
37 #include <sys/systm.h>
38 #include <sys/sbuf.h>
39 #include <sys/queue.h>
40 #include <sys/systm.h>
41 #include <sys/lock.h>
42 #include <sys/mutex.h>
43 
44 #ifdef HAVE_KERNEL_OPTION_HEADERS
45 #include "opt_snd.h"
46 #endif
47 
48 #include <dev/sound/chip.h>
49 #include <dev/sound/pcm/sound.h>
50 #include <dev/sound/pcm/ac97.h>
51 
52 #include "mixer_if.h"
53 
54 #include <dev/sound/pci/emuxkireg.h>
55 #include <dev/sound/pci/emu10kx.h>
56 
57 struct emu_pcm_pchinfo {
58 	int		spd;
59 	int		fmt;
60 	unsigned int	blksz;
61 	int		run;
62 	struct emu_voice *master;
63 	struct emu_voice *slave;
64 	struct snd_dbuf	*buffer;
65 	struct pcm_channel *channel;
66 	struct emu_pcm_info *pcm;
67 	int		timer;
68 };
69 
70 struct emu_pcm_rchinfo {
71 	int		spd;
72 	int		fmt;
73 	unsigned int	blksz;
74 	int		run;
75 	uint32_t 	idxreg;
76 	uint32_t	basereg;
77 	uint32_t	sizereg;
78 	uint32_t	setupreg;
79 	uint32_t	irqmask;
80 	uint32_t	iprmask;
81 	int 		ihandle;
82 	struct snd_dbuf	*buffer;
83 	struct pcm_channel *channel;
84 	struct emu_pcm_info *pcm;
85 	int		timer;
86 };
87 
88 /* XXX Hardware playback channels */
89 #define	MAX_CHANNELS	4
90 
91 #if MAX_CHANNELS > 13
92 #error	Too many hardware channels defined. 13 is the maximum
93 #endif
94 
95 struct emu_pcm_info {
96 	struct mtx		*lock;
97 	device_t		dev;		/* device information */
98 	struct emu_sc_info 	*card;
99 	struct emu_pcm_pchinfo	pch[MAX_CHANNELS];	/* hardware channels */
100 	int			pnum;		/* next free channel number */
101 	struct emu_pcm_rchinfo	rch_adc;
102 	struct emu_pcm_rchinfo	rch_efx;
103 	struct emu_route	rt;
104 	struct emu_route	rt_mono;
105 	int			route;
106 	int			ihandle;	/* interrupt handler */
107 	unsigned int		bufsz;
108 	int			is_emu10k1;
109 	struct ac97_info	*codec;
110 	uint32_t 		ac97_state[0x7F];
111 	kobj_class_t		ac97_mixerclass;
112 	uint32_t		ac97_recdevs;
113 	uint32_t		ac97_playdevs;
114 	struct snd_mixer	*sm;
115 	int			mch_disabled;
116 	unsigned int		emu10k1_volcache[2][2];
117 };
118 
119 static uint32_t emu_rfmt_adc[] = {
120 	SND_FORMAT(AFMT_S16_LE, 1, 0),
121 	SND_FORMAT(AFMT_S16_LE, 2, 0),
122 	0
123 };
124 static struct pcmchan_caps emu_reccaps_adc = {
125 	8000, 48000, emu_rfmt_adc, 0
126 };
127 
128 static uint32_t emu_rfmt_efx[] = {
129 	SND_FORMAT(AFMT_S16_LE, 1, 0),
130 	0
131 };
132 
133 static struct pcmchan_caps emu_reccaps_efx_live = {
134 	48000*32, 48000*32, emu_rfmt_efx, 0
135 };
136 
137 static struct pcmchan_caps emu_reccaps_efx_audigy = {
138 	48000*64, 48000*64, emu_rfmt_efx, 0
139 };
140 
141 static int emu_rates_live[] = {
142 	48000*32
143 };
144 
145 static int emu_rates_audigy[] = {
146 	48000*64
147 };
148 
149 static uint32_t emu_pfmt[] = {
150 	SND_FORMAT(AFMT_U8, 1, 0),
151 	SND_FORMAT(AFMT_U8, 2, 0),
152 	SND_FORMAT(AFMT_S16_LE, 1, 0),
153 	SND_FORMAT(AFMT_S16_LE, 2, 0),
154 	0
155 };
156 static uint32_t emu_pfmt_mono[] = {
157 	SND_FORMAT(AFMT_U8, 1, 0),
158 	SND_FORMAT(AFMT_S16_LE, 1, 0),
159 	0
160 };
161 
162 static struct pcmchan_caps emu_playcaps = {4000, 48000, emu_pfmt, 0};
163 static struct pcmchan_caps emu_playcaps_mono = {4000, 48000, emu_pfmt_mono, 0};
164 
165 static int emu10k1_adcspeed[8] = {48000, 44100, 32000, 24000, 22050, 16000, 11025, 8000};
166 /* audigy supports 12kHz. */
167 static int emu10k2_adcspeed[9] = {48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000};
168 
169 static uint32_t emu_pcm_intr(void *pcm, uint32_t stat);
170 
171 static const struct emu_dspmix_props_k1 {
172 	uint8_t	present;
173 	uint8_t	recdev;
174 	int8_t	input;
175 } dspmix_k1 [SOUND_MIXER_NRDEVICES] = {
176 	/* no mixer device for ac97 */		/* in0 AC97 */
177 	[SOUND_MIXER_DIGITAL1] = {1, 1, 1},	/* in1 CD SPDIF */
178 	/* not connected */			/* in2 (zoom) */
179 	[SOUND_MIXER_DIGITAL2] = {1, 1, 3},	/* in3 toslink */
180 	[SOUND_MIXER_LINE2] =    {1, 1, 4},	/* in4 Line-In2 */
181 	[SOUND_MIXER_DIGITAL3] = {1, 1, 5},	/* in5 on-card  SPDIF */
182 	[SOUND_MIXER_LINE3] =    {1, 1, 6},	/* in6 AUX2 */
183 	/* not connected */			/* in7 */
184 };
185 static const struct emu_dspmix_props_k2 {
186 	uint8_t	present;
187 	uint8_t	recdev;
188 	int8_t	input;
189 } dspmix_k2 [SOUND_MIXER_NRDEVICES] = {
190 	[SOUND_MIXER_VOLUME] =	{1, 0, (-1)},
191 	[SOUND_MIXER_PCM] =	{1, 0, (-1)},
192 
193 	/* no mixer device */			/* in0 AC97 */
194 	[SOUND_MIXER_DIGITAL1] = {1, 1, 1},	/* in1 CD SPDIF */
195 	[SOUND_MIXER_DIGITAL2] = {1, 1, 2},	/* in2 COAX SPDIF */
196 	/* not connected */			/* in3 */
197 	[SOUND_MIXER_LINE2] =    {1, 1, 4},	/* in4 Line-In2 */
198 	[SOUND_MIXER_DIGITAL3] = {1, 1, 5},	/* in5 on-card  SPDIF */
199 	[SOUND_MIXER_LINE3] =    {1, 1, 6},	/* in6 AUX2 */
200 	/* not connected */			/* in7 */
201 };
202 
203 static int
204 emu_dspmixer_init(struct snd_mixer *m)
205 {
206 	struct emu_pcm_info	*sc;
207 	int i;
208 	int p, r;
209 
210 	p = 0;
211 	r = 0;
212 
213 	sc = mix_getdevinfo(m);
214 
215 	if (sc->route == RT_FRONT) {
216 		/* create submixer for AC97 codec */
217 		if ((sc->ac97_mixerclass != NULL) && (sc->codec != NULL)) {
218 			sc->sm = mixer_create(sc->dev, sc->ac97_mixerclass, sc->codec, "ac97");
219 			if (sc->sm != NULL) {
220 				p = mix_getdevs(sc->sm);
221 				r = mix_getrecdevs(sc->sm);
222 			}
223 		}
224 
225 		sc->ac97_playdevs = p;
226 		sc->ac97_recdevs = r;
227 	}
228 
229 	/* This two are always here */
230 	p |= (1 << SOUND_MIXER_PCM);
231 	p |= (1 << SOUND_MIXER_VOLUME);
232 
233 	if (sc->route == RT_FRONT) {
234 		if (sc->is_emu10k1) {
235 			for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
236 				if (dspmix_k1[i].present)
237 					p |= (1 << i);
238 				if (dspmix_k1[i].recdev)
239 					r |= (1 << i);
240 			}
241 		} else {
242 			for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
243 				if (dspmix_k2[i].present)
244 					p |= (1 << i);
245 				if (dspmix_k2[i].recdev)
246 					r |= (1 << i);
247 			}
248 		}
249 	}
250 
251 	mix_setdevs(m, p);
252 	mix_setrecdevs(m, r);
253 
254 	return (0);
255 }
256 
257 static int
258 emu_dspmixer_uninit(struct snd_mixer *m)
259 {
260 	struct emu_pcm_info	*sc;
261 	int err = 0;
262 
263 	/* drop submixer for AC97 codec */
264 	sc = mix_getdevinfo(m);
265 	if (sc->sm != NULL) {
266 		err = mixer_delete(sc->sm);
267 		if (err)
268 			return (err);
269 		sc->sm = NULL;
270 	}
271 	return (0);
272 }
273 
274 static int
275 emu_dspmixer_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
276 {
277 	struct emu_pcm_info *sc;
278 
279 	sc = mix_getdevinfo(m);
280 
281 	switch (dev) {
282 	case SOUND_MIXER_VOLUME:
283 		switch (sc->route) {
284 		case RT_FRONT:
285 			if (sc->sm != NULL)
286 				mix_set(sc->sm, dev, left, right);
287 			if (sc->mch_disabled) {
288 				/* In emu10k1 case PCM volume does not affect
289 				   sound routed to rear & center/sub (it is connected
290 				   to AC97 codec). Calculate it manually. */
291 				/* This really should belong to emu10kx.c */
292 				if (sc->is_emu10k1) {
293 					sc->emu10k1_volcache[0][0] = left;
294 					left = left * sc->emu10k1_volcache[1][0] / 100;
295 					sc->emu10k1_volcache[0][1] = right;
296 					right = right * sc->emu10k1_volcache[1][1] / 100;
297 				}
298 
299 				emumix_set_volume(sc->card, M_MASTER_REAR_L, left);
300 				emumix_set_volume(sc->card, M_MASTER_REAR_R, right);
301 				if (!sc->is_emu10k1) {
302 					emumix_set_volume(sc->card, M_MASTER_CENTER, (left+right)/2);
303 					emumix_set_volume(sc->card, M_MASTER_SUBWOOFER, (left+right)/2);
304 					/* XXX side */
305 				}
306 			} /* mch disabled */
307 			break;
308 		case RT_REAR:
309 			emumix_set_volume(sc->card, M_MASTER_REAR_L, left);
310 			emumix_set_volume(sc->card, M_MASTER_REAR_R, right);
311 			break;
312 		case RT_CENTER:
313 			emumix_set_volume(sc->card, M_MASTER_CENTER, (left+right)/2);
314 			break;
315 		case RT_SUB:
316 			emumix_set_volume(sc->card, M_MASTER_SUBWOOFER, (left+right)/2);
317 			break;
318 		}
319 		break;
320 	case SOUND_MIXER_PCM:
321 		switch (sc->route) {
322 		case RT_FRONT:
323 			if (sc->sm != NULL)
324 				mix_set(sc->sm, dev, left, right);
325 			if (sc->mch_disabled) {
326 				/* See SOUND_MIXER_VOLUME case */
327 				if (sc->is_emu10k1) {
328 					sc->emu10k1_volcache[1][0] = left;
329 					left = left * sc->emu10k1_volcache[0][0] / 100;
330 					sc->emu10k1_volcache[1][1] = right;
331 					right = right * sc->emu10k1_volcache[0][1] / 100;
332 				}
333 				emumix_set_volume(sc->card, M_MASTER_REAR_L, left);
334 				emumix_set_volume(sc->card, M_MASTER_REAR_R, right);
335 
336 				if (!sc->is_emu10k1) {
337 					emumix_set_volume(sc->card, M_MASTER_CENTER, (left+right)/2);
338 					emumix_set_volume(sc->card, M_MASTER_SUBWOOFER, (left+right)/2);
339 					/* XXX side */
340 				}
341 			} /* mch_disabled */
342 			break;
343 		case RT_REAR:
344 			emumix_set_volume(sc->card, M_FX2_REAR_L, left);
345 			emumix_set_volume(sc->card, M_FX3_REAR_R, right);
346 			break;
347 		case RT_CENTER:
348 			emumix_set_volume(sc->card, M_FX4_CENTER, (left+right)/2);
349 			break;
350 		case RT_SUB:
351 			emumix_set_volume(sc->card, M_FX5_SUBWOOFER, (left+right)/2);
352 			break;
353 		}
354 		break;
355 	case SOUND_MIXER_DIGITAL1:	/* CD SPDIF, in1 */
356 			emumix_set_volume(sc->card, M_IN1_FRONT_L, left);
357 			emumix_set_volume(sc->card, M_IN1_FRONT_R, right);
358 		break;
359 	case SOUND_MIXER_DIGITAL2:
360 			if (sc->is_emu10k1) {
361 				/* TOSLink, in3 */
362 				emumix_set_volume(sc->card, M_IN3_FRONT_L, left);
363 				emumix_set_volume(sc->card, M_IN3_FRONT_R, right);
364 			} else {
365 				/* COAX SPDIF, in2 */
366 				emumix_set_volume(sc->card, M_IN2_FRONT_L, left);
367 				emumix_set_volume(sc->card, M_IN2_FRONT_R, right);
368 			}
369 		break;
370 	case SOUND_MIXER_LINE2:		/* Line-In2, in4 */
371 			emumix_set_volume(sc->card, M_IN4_FRONT_L, left);
372 			emumix_set_volume(sc->card, M_IN4_FRONT_R, right);
373 		break;
374 	case SOUND_MIXER_DIGITAL3:	/* on-card SPDIF, in5 */
375 			emumix_set_volume(sc->card, M_IN5_FRONT_L, left);
376 			emumix_set_volume(sc->card, M_IN5_FRONT_R, right);
377 		break;
378 	case SOUND_MIXER_LINE3:		/* AUX2, in6 */
379 			emumix_set_volume(sc->card, M_IN6_FRONT_L, left);
380 			emumix_set_volume(sc->card, M_IN6_FRONT_R, right);
381 		break;
382 	default:
383 		if (sc->sm != NULL) {
384 			/* XXX emumix_set_volume is not required here */
385 			emumix_set_volume(sc->card, M_IN0_FRONT_L, 100);
386 			emumix_set_volume(sc->card, M_IN0_FRONT_R, 100);
387 			mix_set(sc->sm, dev, left, right);
388 		} else
389 			device_printf(sc->dev, "mixer error: unknown device %d\n", dev);
390 	}
391 	return  (0);
392 }
393 
394 static u_int32_t
395 emu_dspmixer_setrecsrc(struct snd_mixer *m, u_int32_t src)
396 {
397 	struct emu_pcm_info *sc;
398 	int i;
399 	u_int32_t recmask;
400 	int	input[8];
401 
402 	sc = mix_getdevinfo(m);
403 	recmask = 0;
404 	for (i=0; i < 8; i++)
405 		input[i]=0;
406 
407 	if (sc->sm != NULL)
408 		if ((src & sc->ac97_recdevs) !=0)
409 			if (mix_setrecsrc(sc->sm, src & sc->ac97_recdevs) == 0) {
410 				recmask |= (src & sc->ac97_recdevs);
411 				/* Recording from AC97 codec.
412 				   Enable AC97 route to rec on DSP */
413 				input[0] = 1;
414 			}
415 	if (sc->is_emu10k1) {
416 		for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
417 			if (dspmix_k1[i].recdev)
418 				if ((src & (1 << i)) == ((uint32_t)1 << i)) {
419 				recmask |= (1 << i);
420 				/* enable device i */
421 				input[dspmix_k1[i].input] = 1;
422 				}
423 		}
424 	} else {
425 		for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
426 			if (dspmix_k2[i].recdev)
427 				if ((src & (1 << i)) == ((uint32_t)1 << i)) {
428 				recmask |= (1 << i);
429 				/* enable device i */
430 				input[dspmix_k2[i].input] = 1;
431 				}
432 		}
433 	}
434 	emumix_set_volume(sc->card, M_IN0_REC_L, input[0] == 1 ? 100 : 0);
435 	emumix_set_volume(sc->card, M_IN0_REC_R, input[0] == 1 ? 100 : 0);
436 
437 	emumix_set_volume(sc->card, M_IN1_REC_L, input[1] == 1 ? 100 : 0);
438 	emumix_set_volume(sc->card, M_IN1_REC_R, input[1] == 1 ? 100 : 0);
439 
440 	if (!sc->is_emu10k1) {
441 		emumix_set_volume(sc->card, M_IN2_REC_L, input[2] == 1 ? 100 : 0);
442 		emumix_set_volume(sc->card, M_IN2_REC_R, input[2] == 1 ? 100 : 0);
443 	}
444 
445 	if (sc->is_emu10k1) {
446 		emumix_set_volume(sc->card, M_IN3_REC_L, input[3] == 1 ? 100 : 0);
447 		emumix_set_volume(sc->card, M_IN3_REC_R, input[3] == 1 ? 100 : 0);
448 	}
449 
450 	emumix_set_volume(sc->card, M_IN4_REC_L, input[4] == 1 ? 100 : 0);
451 	emumix_set_volume(sc->card, M_IN4_REC_R, input[4] == 1 ? 100 : 0);
452 
453 	emumix_set_volume(sc->card, M_IN5_REC_L, input[5] == 1 ? 100 : 0);
454 	emumix_set_volume(sc->card, M_IN5_REC_R, input[5] == 1 ? 100 : 0);
455 
456 	emumix_set_volume(sc->card, M_IN6_REC_L, input[6] == 1 ? 100 : 0);
457 	emumix_set_volume(sc->card, M_IN6_REC_R, input[6] == 1 ? 100 : 0);
458 
459 	/* XXX check for K1/k2 differences? */
460 	if ((src & (1 << SOUND_MIXER_PCM)) == (1 << SOUND_MIXER_PCM)) {
461 		emumix_set_volume(sc->card, M_FX0_REC_L, emumix_get_volume(sc->card, M_FX0_FRONT_L));
462 		emumix_set_volume(sc->card, M_FX1_REC_R, emumix_get_volume(sc->card, M_FX1_FRONT_R));
463 	} else {
464 		emumix_set_volume(sc->card, M_FX0_REC_L, 0);
465 		emumix_set_volume(sc->card, M_FX1_REC_R, 0);
466 	}
467 
468 	return (recmask);
469 }
470 
471 static kobj_method_t emudspmixer_methods[] = {
472 	KOBJMETHOD(mixer_init,		emu_dspmixer_init),
473 	KOBJMETHOD(mixer_uninit,	emu_dspmixer_uninit),
474 	KOBJMETHOD(mixer_set,		emu_dspmixer_set),
475 	KOBJMETHOD(mixer_setrecsrc,	emu_dspmixer_setrecsrc),
476 	KOBJMETHOD_END
477 };
478 MIXER_DECLARE(emudspmixer);
479 
480 static int
481 emu_efxmixer_init(struct snd_mixer *m)
482 {
483 	mix_setdevs(m, SOUND_MASK_VOLUME);
484 	mix_setrecdevs(m, SOUND_MASK_MONITOR);
485 	return (0);
486 }
487 
488 static int
489 emu_efxmixer_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
490 {
491 	if (left + right == 200) return (0);
492 	return  (0);
493 }
494 
495 static u_int32_t
496 emu_efxmixer_setrecsrc(struct snd_mixer *m __unused, u_int32_t src __unused)
497 {
498 	return (SOUND_MASK_MONITOR);
499 }
500 
501 static kobj_method_t emuefxmixer_methods[] = {
502 	KOBJMETHOD(mixer_init,		emu_efxmixer_init),
503 	KOBJMETHOD(mixer_set,		emu_efxmixer_set),
504 	KOBJMETHOD(mixer_setrecsrc,	emu_efxmixer_setrecsrc),
505 	KOBJMETHOD_END
506 };
507 MIXER_DECLARE(emuefxmixer);
508 
509 /*
510  * AC97 emulation code for Audigy and later cards.
511  * Some parts of AC97 codec are not used by hardware, but can be used
512  * to change some DSP controls via AC97 mixer interface. This includes:
513  * - master volume controls MASTER_FRONT_[R|L]
514  * - pcm volume controls FX[0|1]_FRONT_[R|L]
515  * - rec volume controls MASTER_REC_[R|L]
516  * We do it because we need to put it under user control....
517  * We also keep some parts of AC97 disabled to get better sound quality
518  */
519 
520 #define	AC97LEFT(x)	((x & 0x7F00)>>8)
521 #define	AC97RIGHT(x)	(x & 0x007F)
522 #define	AC97MUTE(x)	((x & 0x8000)>>15)
523 #define	BIT4_TO100(x)	(100-(x)*100/(0x0f))
524 #define	BIT6_TO100(x)	(100-(x)*100/(0x3f))
525 #define	BIT4_TO255(x)	(255-(x)*255/(0x0f))
526 #define	BIT6_TO255(x)	(255-(x)*255/(0x3f))
527 #define	V100_TOBIT6(x)	(0x3f*(100-x)/100)
528 #define	V100_TOBIT4(x)	(0x0f*(100-x)/100)
529 #define	AC97ENCODE(x_muted, x_left, x_right)	(((x_muted & 1)<<15) | ((x_left & 0x3f)<<8) | (x_right & 0x3f))
530 
531 static int
532 emu_ac97_read_emulation(struct emu_pcm_info *sc, int regno)
533 {
534 	int use_ac97;
535 	int emulated;
536 	int tmp;
537 
538 	use_ac97 = 1;
539 	emulated = 0;
540 
541 	switch (regno) {
542 	case AC97_MIX_MASTER:
543 		emulated = sc->ac97_state[AC97_MIX_MASTER];
544 		use_ac97 = 0;
545 		break;
546 	case AC97_MIX_PCM:
547 		emulated = sc->ac97_state[AC97_MIX_PCM];
548 		use_ac97 = 0;
549 		break;
550 	case AC97_REG_RECSEL:
551 		emulated = 0x0505;
552 		use_ac97 = 0;
553 		break;
554 	case AC97_MIX_RGAIN:
555 		emulated = sc->ac97_state[AC97_MIX_RGAIN];
556 		use_ac97 = 0;
557 		break;
558 	}
559 
560 	emu_wr(sc->card, EMU_AC97ADDR, regno, 1);
561 	tmp = emu_rd(sc->card, EMU_AC97DATA, 2);
562 
563 	if (use_ac97)
564 		emulated = tmp;
565 
566 	return (emulated);
567 }
568 
569 static void
570 emu_ac97_write_emulation(struct emu_pcm_info *sc, int regno, uint32_t data)
571 {
572 	int write_ac97;
573 	int left, right;
574 	uint32_t emu_left, emu_right;
575 	int is_mute;
576 
577 	write_ac97 = 1;
578 
579 	left = AC97LEFT(data);
580 	emu_left = BIT6_TO100(left);	/* We show us as 6-bit AC97 mixer */
581 	right = AC97RIGHT(data);
582 	emu_right = BIT6_TO100(right);
583 	is_mute = AC97MUTE(data);
584 	if (is_mute)
585 		emu_left = emu_right = 0;
586 
587 	switch (regno) {
588 		/* TODO: reset emulator on AC97_RESET */
589 	case AC97_MIX_MASTER:
590 		emumix_set_volume(sc->card, M_MASTER_FRONT_L, emu_left);
591 		emumix_set_volume(sc->card, M_MASTER_FRONT_R, emu_right);
592 		sc->ac97_state[AC97_MIX_MASTER] = data & (0x8000 | 0x3f3f);
593 		data = 0x8000;	/* Mute AC97 main out */
594 		break;
595 	case AC97_MIX_PCM:	/* PCM OUT VOL */
596 		emumix_set_volume(sc->card, M_FX0_FRONT_L, emu_left);
597 		emumix_set_volume(sc->card, M_FX1_FRONT_R, emu_right);
598 		sc->ac97_state[AC97_MIX_PCM] = data & (0x8000 | 0x3f3f);
599 		data = 0x8000;	/* Mute AC97 PCM out */
600 		break;
601 	case AC97_REG_RECSEL:
602 		/*
603 		 * PCM recording source is set to "stereo mix" (labeled "vol"
604 		 * in mixer). There is no 'playback' from AC97 codec -
605 		 * if you want to hear anything from AC97 you have to _record_
606 		 * it. Keep things simple and record "stereo mix".
607 		 */
608 		data = 0x0505;
609 		break;
610 	case AC97_MIX_RGAIN:	/* RECORD GAIN */
611 		emu_left = BIT4_TO100(left);	/* rgain is 4-bit */
612 		emu_right = BIT4_TO100(right);
613 		emumix_set_volume(sc->card, M_MASTER_REC_L, 100-emu_left);
614 		emumix_set_volume(sc->card, M_MASTER_REC_R, 100-emu_right);
615 		/*
616 		 * Record gain on AC97 should stay zero to get AC97 sound on
617 		 * AC97_[RL] connectors on EMU10K2 chip. AC97 on Audigy is not
618 		 * directly connected to any output, only to EMU10K2 chip Use
619 		 * this control to set AC97 mix volume inside EMU10K2 chip
620 		 */
621 		sc->ac97_state[AC97_MIX_RGAIN] = data & (0x8000 | 0x0f0f);
622 		data = 0x0000;
623 		break;
624 	}
625 	if (write_ac97) {
626 		emu_wr(sc->card, EMU_AC97ADDR, regno, 1);
627 		emu_wr(sc->card, EMU_AC97DATA, data, 2);
628 	}
629 }
630 
631 static int
632 emu_erdcd(kobj_t obj __unused, void *devinfo, int regno)
633 {
634 	struct emu_pcm_info *sc = (struct emu_pcm_info *)devinfo;
635 
636 	return (emu_ac97_read_emulation(sc, regno));
637 }
638 
639 static int
640 emu_ewrcd(kobj_t obj __unused, void *devinfo, int regno, uint32_t data)
641 {
642 	struct emu_pcm_info *sc = (struct emu_pcm_info *)devinfo;
643 
644 	emu_ac97_write_emulation(sc, regno, data);
645 	return (0);
646 }
647 
648 static kobj_method_t emu_eac97_methods[] = {
649 	KOBJMETHOD(ac97_read, emu_erdcd),
650 	KOBJMETHOD(ac97_write, emu_ewrcd),
651 	KOBJMETHOD_END
652 };
653 AC97_DECLARE(emu_eac97);
654 
655 /* real ac97 codec */
656 static int
657 emu_rdcd(kobj_t obj __unused, void *devinfo, int regno)
658 {
659 	int rd;
660 	struct emu_pcm_info *sc = (struct emu_pcm_info *)devinfo;
661 
662 	KASSERT(sc->card != NULL, ("emu_rdcd: no soundcard"));
663 	emu_wr(sc->card, EMU_AC97ADDR, regno, 1);
664 	rd = emu_rd(sc->card, EMU_AC97DATA, 2);
665 	return (rd);
666 }
667 
668 static int
669 emu_wrcd(kobj_t obj __unused, void *devinfo, int regno, uint32_t data)
670 {
671 	struct emu_pcm_info *sc = (struct emu_pcm_info *)devinfo;
672 
673 	KASSERT(sc->card != NULL, ("emu_wrcd: no soundcard"));
674 	emu_wr(sc->card, EMU_AC97ADDR, regno, 1);
675 	emu_wr(sc->card, EMU_AC97DATA, data, 2);
676 	return (0);
677 }
678 
679 static kobj_method_t emu_ac97_methods[] = {
680 	KOBJMETHOD(ac97_read, emu_rdcd),
681 	KOBJMETHOD(ac97_write, emu_wrcd),
682 	KOBJMETHOD_END
683 };
684 AC97_DECLARE(emu_ac97);
685 
686 static int
687 emu_k1_recval(int speed)
688 {
689 	int val;
690 
691 	val = 0;
692 	while ((val < 7) && (speed < emu10k1_adcspeed[val]))
693 		val++;
694 	return (val);
695 }
696 
697 static int
698 emu_k2_recval(int speed)
699 {
700 	int val;
701 
702 	val = 0;
703 	while ((val < 8) && (speed < emu10k2_adcspeed[val]))
704 		val++;
705 	return (val);
706 }
707 
708 static void *
709 emupchan_init(kobj_t obj __unused, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir __unused)
710 {
711 	struct emu_pcm_info *sc = devinfo;
712 	struct emu_pcm_pchinfo *ch;
713 	void *r;
714 
715 	KASSERT(dir == PCMDIR_PLAY, ("emupchan_init: bad direction"));
716 	KASSERT(sc->card != NULL, ("empchan_init: no soundcard"));
717 
718 	if (sc->pnum >= MAX_CHANNELS)
719 		return (NULL);
720 	ch = &(sc->pch[sc->pnum++]);
721 	ch->buffer = b;
722 	ch->pcm = sc;
723 	ch->channel = c;
724 	ch->blksz = sc->bufsz;
725 	ch->fmt = SND_FORMAT(AFMT_U8, 1, 0);
726 	ch->spd = 8000;
727 	ch->master = emu_valloc(sc->card);
728 	/*
729 	 * XXX we have to allocate slave even for mono channel until we
730 	 * fix emu_vfree to handle this case.
731 	 */
732 	ch->slave = emu_valloc(sc->card);
733 	ch->timer = emu_timer_create(sc->card);
734 	r = (emu_vinit(sc->card, ch->master, ch->slave, EMU_PLAY_BUFSZ, ch->buffer)) ? NULL : ch;
735 	return (r);
736 }
737 
738 static int
739 emupchan_free(kobj_t obj __unused, void *c_devinfo)
740 {
741 	struct emu_pcm_pchinfo *ch = c_devinfo;
742 	struct emu_pcm_info *sc = ch->pcm;
743 
744 	emu_timer_clear(sc->card, ch->timer);
745 	if (ch->slave != NULL)
746 		emu_vfree(sc->card, ch->slave);
747 	emu_vfree(sc->card, ch->master);
748 	return (0);
749 }
750 
751 static int
752 emupchan_setformat(kobj_t obj __unused, void *c_devinfo, uint32_t format)
753 {
754 	struct emu_pcm_pchinfo *ch = c_devinfo;
755 
756 	ch->fmt = format;
757 	return (0);
758 }
759 
760 static uint32_t
761 emupchan_setspeed(kobj_t obj __unused, void *c_devinfo, uint32_t speed)
762 {
763 	struct emu_pcm_pchinfo *ch = c_devinfo;
764 
765 	ch->spd = speed;
766 	return (ch->spd);
767 }
768 
769 static uint32_t
770 emupchan_setblocksize(kobj_t obj __unused, void *c_devinfo, uint32_t blocksize)
771 {
772 	struct emu_pcm_pchinfo *ch = c_devinfo;
773 	struct emu_pcm_info *sc = ch->pcm;
774 
775 	if (blocksize > ch->pcm->bufsz)
776 		blocksize = ch->pcm->bufsz;
777 	snd_mtxlock(sc->lock);
778 	ch->blksz = blocksize;
779 	emu_timer_set(sc->card, ch->timer, ch->blksz / sndbuf_getalign(ch->buffer));
780 	snd_mtxunlock(sc->lock);
781 	return (ch->blksz);
782 }
783 
784 static int
785 emupchan_trigger(kobj_t obj __unused, void *c_devinfo, int go)
786 {
787 	struct emu_pcm_pchinfo *ch = c_devinfo;
788 	struct emu_pcm_info *sc = ch->pcm;
789 
790 	if (!PCMTRIG_COMMON(go))
791 		return (0);
792 
793 	snd_mtxlock(sc->lock); /* XXX can we trigger on parallel threads ? */
794 	if (go == PCMTRIG_START) {
795 		emu_vsetup(ch->master, ch->fmt, ch->spd);
796 		if (AFMT_CHANNEL(ch->fmt) > 1)
797 			emu_vroute(sc->card, &(sc->rt), ch->master);
798 		else
799 			emu_vroute(sc->card, &(sc->rt_mono), ch->master);
800 		emu_vwrite(sc->card, ch->master);
801 		emu_timer_set(sc->card, ch->timer, ch->blksz / sndbuf_getalign(ch->buffer));
802 		emu_timer_enable(sc->card, ch->timer, 1);
803 	}
804 	/* PCM interrupt handler will handle PCMTRIG_STOP event */
805 	ch->run = (go == PCMTRIG_START) ? 1 : 0;
806 	emu_vtrigger(sc->card, ch->master, ch->run);
807 	snd_mtxunlock(sc->lock);
808 	return (0);
809 }
810 
811 static uint32_t
812 emupchan_getptr(kobj_t obj __unused, void *c_devinfo)
813 {
814 	struct emu_pcm_pchinfo *ch = c_devinfo;
815 	struct emu_pcm_info *sc = ch->pcm;
816 	int r;
817 
818 	r = emu_vpos(sc->card, ch->master);
819 
820 	return (r);
821 }
822 
823 static struct pcmchan_caps *
824 emupchan_getcaps(kobj_t obj __unused, void *c_devinfo __unused)
825 {
826 	struct emu_pcm_pchinfo *ch = c_devinfo;
827 	struct emu_pcm_info *sc = ch->pcm;
828 
829 	switch (sc->route) {
830 	case RT_FRONT:
831 		/* FALLTHROUGH */
832 	case RT_REAR:
833 		/* FALLTHROUGH */
834 	case RT_SIDE:
835 		return (&emu_playcaps);
836 		break;
837 	case RT_CENTER:
838 		/* FALLTHROUGH */
839 	case RT_SUB:
840 		return (&emu_playcaps_mono);
841 		break;
842 	}
843 	return (NULL);
844 }
845 
846 static kobj_method_t emupchan_methods[] = {
847 	KOBJMETHOD(channel_init, emupchan_init),
848 	KOBJMETHOD(channel_free, emupchan_free),
849 	KOBJMETHOD(channel_setformat, emupchan_setformat),
850 	KOBJMETHOD(channel_setspeed, emupchan_setspeed),
851 	KOBJMETHOD(channel_setblocksize, emupchan_setblocksize),
852 	KOBJMETHOD(channel_trigger, emupchan_trigger),
853 	KOBJMETHOD(channel_getptr, emupchan_getptr),
854 	KOBJMETHOD(channel_getcaps, emupchan_getcaps),
855 	KOBJMETHOD_END
856 };
857 CHANNEL_DECLARE(emupchan);
858 
859 static void *
860 emurchan_init(kobj_t obj __unused, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir __unused)
861 {
862 	struct emu_pcm_info *sc = devinfo;
863 	struct emu_pcm_rchinfo *ch;
864 
865 	KASSERT(dir == PCMDIR_REC, ("emurchan_init: bad direction"));
866 	ch = &sc->rch_adc;
867 	ch->buffer = b;
868 	ch->pcm = sc;
869 	ch->channel = c;
870 	ch->blksz = sc->bufsz / 2; /* We rise interrupt for half-full buffer */
871 	ch->fmt = SND_FORMAT(AFMT_U8, 1, 0);
872 	ch->spd = 8000;
873 	ch->idxreg = sc->is_emu10k1 ? EMU_ADCIDX : EMU_A_ADCIDX;
874 	ch->basereg = EMU_ADCBA;
875 	ch->sizereg = EMU_ADCBS;
876 	ch->setupreg = EMU_ADCCR;
877 	ch->irqmask = EMU_INTE_ADCBUFENABLE;
878 	ch->iprmask = EMU_IPR_ADCBUFFULL | EMU_IPR_ADCBUFHALFFULL;
879 
880 	if (sndbuf_alloc(ch->buffer, emu_gettag(sc->card), 0, sc->bufsz) != 0)
881 		return (NULL);
882 	else {
883 		ch->timer = emu_timer_create(sc->card);
884 		emu_wrptr(sc->card, 0, ch->basereg, sndbuf_getbufaddr(ch->buffer));
885 		emu_wrptr(sc->card, 0, ch->sizereg, 0);	/* off */
886 		return (ch);
887 	}
888 }
889 
890 static int
891 emurchan_free(kobj_t obj __unused, void *c_devinfo)
892 {
893 	struct emu_pcm_rchinfo *ch = c_devinfo;
894 	struct emu_pcm_info *sc = ch->pcm;
895 
896 	emu_timer_clear(sc->card, ch->timer);
897 	return (0);
898 }
899 
900 static int
901 emurchan_setformat(kobj_t obj __unused, void *c_devinfo, uint32_t format)
902 {
903 	struct emu_pcm_rchinfo *ch = c_devinfo;
904 
905 	ch->fmt = format;
906 	return (0);
907 }
908 
909 static uint32_t
910 emurchan_setspeed(kobj_t obj __unused, void *c_devinfo, uint32_t speed)
911 {
912 	struct emu_pcm_rchinfo *ch = c_devinfo;
913 
914 	if (ch->pcm->is_emu10k1) {
915 		speed = emu10k1_adcspeed[emu_k1_recval(speed)];
916 	} else {
917 		speed = emu10k2_adcspeed[emu_k2_recval(speed)];
918 	}
919 	ch->spd = speed;
920 	return (ch->spd);
921 }
922 
923 static uint32_t
924 emurchan_setblocksize(kobj_t obj __unused, void *c_devinfo, uint32_t blocksize)
925 {
926 	struct emu_pcm_rchinfo *ch = c_devinfo;
927 	struct emu_pcm_info *sc = ch->pcm;
928 
929 	ch->blksz = blocksize;
930 	/*
931 	 * If blocksize is less than half of buffer size we will not get
932 	 * BUFHALFFULL interrupt in time and channel will need to generate
933 	 * (and use) timer interrupts. Otherwise channel will be marked dead.
934 	 */
935 	if (ch->blksz < (ch->pcm->bufsz / 2)) {
936 		emu_timer_set(sc->card, ch->timer, ch->blksz / sndbuf_getalign(ch->buffer));
937 		emu_timer_enable(sc->card, ch->timer, 1);
938 	} else {
939 		emu_timer_enable(sc->card, ch->timer, 0);
940 	}
941 	return (ch->blksz);
942 }
943 
944 static int
945 emurchan_trigger(kobj_t obj __unused, void *c_devinfo, int go)
946 {
947 	struct emu_pcm_rchinfo *ch = c_devinfo;
948 	struct emu_pcm_info *sc = ch->pcm;
949 	uint32_t val, sz;
950 
951 	if (!PCMTRIG_COMMON(go))
952 		return (0);
953 
954 	switch (sc->bufsz) {
955 	case 4096:
956 		sz = EMU_RECBS_BUFSIZE_4096;
957 		break;
958 	case 8192:
959 		sz = EMU_RECBS_BUFSIZE_8192;
960 		break;
961 	case 16384:
962 		sz = EMU_RECBS_BUFSIZE_16384;
963 		break;
964 	case 32768:
965 		sz = EMU_RECBS_BUFSIZE_32768;
966 		break;
967 	case 65536:
968 		sz = EMU_RECBS_BUFSIZE_65536;
969 		break;
970 	default:
971 		sz = EMU_RECBS_BUFSIZE_4096;
972 	}
973 
974 	snd_mtxlock(sc->lock);
975 	switch (go) {
976 	case PCMTRIG_START:
977 		ch->run = 1;
978 		emu_wrptr(sc->card, 0, ch->sizereg, sz);
979 		val = sc->is_emu10k1 ? EMU_ADCCR_LCHANENABLE : EMU_A_ADCCR_LCHANENABLE;
980 		if (AFMT_CHANNEL(ch->fmt) > 1)
981 			val |= sc->is_emu10k1 ? EMU_ADCCR_RCHANENABLE : EMU_A_ADCCR_RCHANENABLE;
982 		val |= sc->is_emu10k1 ? emu_k1_recval(ch->spd) : emu_k2_recval(ch->spd);
983 		emu_wrptr(sc->card, 0, ch->setupreg, 0);
984 		emu_wrptr(sc->card, 0, ch->setupreg, val);
985 		ch->ihandle = emu_intr_register(sc->card, ch->irqmask, ch->iprmask, &emu_pcm_intr, sc);
986 		break;
987 	case PCMTRIG_STOP:
988 		/* FALLTHROUGH */
989 	case PCMTRIG_ABORT:
990 		ch->run = 0;
991 		emu_wrptr(sc->card, 0, ch->sizereg, 0);
992 		if (ch->setupreg)
993 			emu_wrptr(sc->card, 0, ch->setupreg, 0);
994 		(void)emu_intr_unregister(sc->card, ch->ihandle);
995 		break;
996 	case PCMTRIG_EMLDMAWR:
997 		/* FALLTHROUGH */
998 	case PCMTRIG_EMLDMARD:
999 		/* FALLTHROUGH */
1000 	default:
1001 		break;
1002 	}
1003 	snd_mtxunlock(sc->lock);
1004 
1005 	return (0);
1006 }
1007 
1008 static uint32_t
1009 emurchan_getptr(kobj_t obj __unused, void *c_devinfo)
1010 {
1011 	struct emu_pcm_rchinfo *ch = c_devinfo;
1012 	struct emu_pcm_info *sc = ch->pcm;
1013 	int r;
1014 
1015 	r = emu_rdptr(sc->card, 0, ch->idxreg) & 0x0000ffff;
1016 
1017 	return (r);
1018 }
1019 
1020 static struct pcmchan_caps *
1021 emurchan_getcaps(kobj_t obj __unused, void *c_devinfo __unused)
1022 {
1023 	return (&emu_reccaps_adc);
1024 }
1025 
1026 static kobj_method_t emurchan_methods[] = {
1027 	KOBJMETHOD(channel_init, emurchan_init),
1028 	KOBJMETHOD(channel_free, emurchan_free),
1029 	KOBJMETHOD(channel_setformat, emurchan_setformat),
1030 	KOBJMETHOD(channel_setspeed, emurchan_setspeed),
1031 	KOBJMETHOD(channel_setblocksize, emurchan_setblocksize),
1032 	KOBJMETHOD(channel_trigger, emurchan_trigger),
1033 	KOBJMETHOD(channel_getptr, emurchan_getptr),
1034 	KOBJMETHOD(channel_getcaps, emurchan_getcaps),
1035 	KOBJMETHOD_END
1036 };
1037 CHANNEL_DECLARE(emurchan);
1038 
1039 static void *
1040 emufxrchan_init(kobj_t obj __unused, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir __unused)
1041 {
1042 	struct emu_pcm_info *sc = devinfo;
1043 	struct emu_pcm_rchinfo *ch;
1044 
1045 	KASSERT(dir == PCMDIR_REC, ("emurchan_init: bad direction"));
1046 
1047 	if (sc == NULL) return (NULL);
1048 
1049 	ch = &(sc->rch_efx);
1050 	ch->fmt = SND_FORMAT(AFMT_S16_LE, 1, 0);
1051 	ch->spd = sc->is_emu10k1 ? 48000*32 : 48000 * 64;
1052 	ch->idxreg = EMU_FXIDX;
1053 	ch->basereg = EMU_FXBA;
1054 	ch->sizereg = EMU_FXBS;
1055 	ch->irqmask = EMU_INTE_EFXBUFENABLE;
1056 	ch->iprmask = EMU_IPR_EFXBUFFULL | EMU_IPR_EFXBUFHALFFULL;
1057 	ch->buffer = b;
1058 	ch->pcm = sc;
1059 	ch->channel = c;
1060 	ch->blksz = sc->bufsz / 2;
1061 
1062 	if (sndbuf_alloc(ch->buffer, emu_gettag(sc->card), 0, sc->bufsz) != 0)
1063 		return (NULL);
1064 	else {
1065 		emu_wrptr(sc->card, 0, ch->basereg, sndbuf_getbufaddr(ch->buffer));
1066 		emu_wrptr(sc->card, 0, ch->sizereg, 0);	/* off */
1067 		return (ch);
1068 	}
1069 }
1070 
1071 static int
1072 emufxrchan_setformat(kobj_t obj __unused, void *c_devinfo __unused, uint32_t format)
1073 {
1074 	if (format == SND_FORMAT(AFMT_S16_LE, 1, 0)) return (0);
1075 	return (EINVAL);
1076 }
1077 
1078 static uint32_t
1079 emufxrchan_setspeed(kobj_t obj __unused, void *c_devinfo, uint32_t speed)
1080 {
1081 	struct emu_pcm_rchinfo *ch = c_devinfo;
1082 
1083 	/* FIXED RATE CHANNEL */
1084 	return (ch->spd);
1085 }
1086 
1087 static uint32_t
1088 emufxrchan_setblocksize(kobj_t obj __unused, void *c_devinfo, uint32_t blocksize)
1089 {
1090 	struct emu_pcm_rchinfo *ch = c_devinfo;
1091 
1092 	ch->blksz = blocksize;
1093 	/*
1094 	 * XXX If blocksize is less than half of buffer size we will not get
1095 	 * interrupt in time and channel will die due to interrupt timeout.
1096 	 * This	should not happen with FX rchan, because it will fill buffer
1097 	 * very	fast (64K buffer is 0.021seconds on Audigy).
1098 	 */
1099 	if (ch->blksz < (ch->pcm->bufsz / 2))
1100 		ch->blksz = ch->pcm->bufsz / 2;
1101 	return (ch->blksz);
1102 }
1103 
1104 static int
1105 emufxrchan_trigger(kobj_t obj __unused, void *c_devinfo, int go)
1106 {
1107 	struct emu_pcm_rchinfo *ch = c_devinfo;
1108 	struct emu_pcm_info *sc = ch->pcm;
1109 	uint32_t sz;
1110 
1111 	if (!PCMTRIG_COMMON(go))
1112 		return (0);
1113 
1114 	switch (sc->bufsz) {
1115 	case 4096:
1116 		sz = EMU_RECBS_BUFSIZE_4096;
1117 		break;
1118 	case 8192:
1119 		sz = EMU_RECBS_BUFSIZE_8192;
1120 		break;
1121 	case 16384:
1122 		sz = EMU_RECBS_BUFSIZE_16384;
1123 		break;
1124 	case 32768:
1125 		sz = EMU_RECBS_BUFSIZE_32768;
1126 		break;
1127 	case 65536:
1128 		sz = EMU_RECBS_BUFSIZE_65536;
1129 		break;
1130 	default:
1131 		sz = EMU_RECBS_BUFSIZE_4096;
1132 	}
1133 
1134 	snd_mtxlock(sc->lock);
1135 	switch (go) {
1136 	case PCMTRIG_START:
1137 		ch->run = 1;
1138 		emu_wrptr(sc->card, 0, ch->sizereg, sz);
1139 		ch->ihandle = emu_intr_register(sc->card, ch->irqmask, ch->iprmask, &emu_pcm_intr, sc);
1140 		/*
1141 		 * SB Live! is limited to 32 mono channels. Audigy
1142 		 * has 64 mono channels. Channels are enabled
1143 		 * by setting a bit in EMU_A_FXWC[1|2] registers.
1144 		 */
1145 		/* XXX there is no way to demultiplex this streams for now */
1146 		if (sc->is_emu10k1) {
1147 			emu_wrptr(sc->card, 0, EMU_FXWC, 0xffffffff);
1148 		} else {
1149 			emu_wrptr(sc->card, 0, EMU_A_FXWC1, 0xffffffff);
1150 			emu_wrptr(sc->card, 0, EMU_A_FXWC2, 0xffffffff);
1151 		}
1152 		break;
1153 	case PCMTRIG_STOP:
1154 		/* FALLTHROUGH */
1155 	case PCMTRIG_ABORT:
1156 		ch->run = 0;
1157 		if (sc->is_emu10k1) {
1158 			emu_wrptr(sc->card, 0, EMU_FXWC, 0x0);
1159 		} else {
1160 			emu_wrptr(sc->card, 0, EMU_A_FXWC1, 0x0);
1161 			emu_wrptr(sc->card, 0, EMU_A_FXWC2, 0x0);
1162 		}
1163 		emu_wrptr(sc->card, 0, ch->sizereg, 0);
1164 		(void)emu_intr_unregister(sc->card, ch->ihandle);
1165 		break;
1166 	case PCMTRIG_EMLDMAWR:
1167 		/* FALLTHROUGH */
1168 	case PCMTRIG_EMLDMARD:
1169 		/* FALLTHROUGH */
1170 	default:
1171 		break;
1172 	}
1173 	snd_mtxunlock(sc->lock);
1174 
1175 	return (0);
1176 }
1177 
1178 static uint32_t
1179 emufxrchan_getptr(kobj_t obj __unused, void *c_devinfo)
1180 {
1181 	struct emu_pcm_rchinfo *ch = c_devinfo;
1182 	struct emu_pcm_info *sc = ch->pcm;
1183 	int r;
1184 
1185 	r = emu_rdptr(sc->card, 0, ch->idxreg) & 0x0000ffff;
1186 
1187 	return (r);
1188 }
1189 
1190 static struct pcmchan_caps *
1191 emufxrchan_getcaps(kobj_t obj __unused, void *c_devinfo)
1192 {
1193 	struct emu_pcm_rchinfo *ch = c_devinfo;
1194 	struct emu_pcm_info *sc = ch->pcm;
1195 
1196 	if (sc->is_emu10k1)
1197 		return (&emu_reccaps_efx_live);
1198 	return (&emu_reccaps_efx_audigy);
1199 
1200 }
1201 
1202 static int
1203 emufxrchan_getrates(kobj_t obj __unused, void *c_devinfo, int **rates)
1204 {
1205 	struct emu_pcm_rchinfo *ch = c_devinfo;
1206 	struct emu_pcm_info *sc = ch->pcm;
1207 
1208 	if (sc->is_emu10k1)
1209 		*rates = emu_rates_live;
1210 	else
1211 		*rates = emu_rates_audigy;
1212 
1213 	return 1;
1214 }
1215 
1216 static kobj_method_t emufxrchan_methods[] = {
1217 	KOBJMETHOD(channel_init, emufxrchan_init),
1218 	KOBJMETHOD(channel_setformat, emufxrchan_setformat),
1219 	KOBJMETHOD(channel_setspeed, emufxrchan_setspeed),
1220 	KOBJMETHOD(channel_setblocksize, emufxrchan_setblocksize),
1221 	KOBJMETHOD(channel_trigger, emufxrchan_trigger),
1222 	KOBJMETHOD(channel_getptr, emufxrchan_getptr),
1223 	KOBJMETHOD(channel_getcaps, emufxrchan_getcaps),
1224 	KOBJMETHOD(channel_getrates, emufxrchan_getrates),
1225 	KOBJMETHOD_END
1226 };
1227 CHANNEL_DECLARE(emufxrchan);
1228 
1229 static uint32_t
1230 emu_pcm_intr(void *pcm, uint32_t stat)
1231 {
1232 	struct emu_pcm_info *sc = (struct emu_pcm_info *)pcm;
1233 	uint32_t ack;
1234 	int i;
1235 
1236 	ack = 0;
1237 
1238 	snd_mtxlock(sc->lock);
1239 
1240 	if (stat & EMU_IPR_INTERVALTIMER) {
1241 		ack |= EMU_IPR_INTERVALTIMER;
1242 		for (i = 0; i < MAX_CHANNELS; i++)
1243 			if (sc->pch[i].channel) {
1244 				if (sc->pch[i].run == 1) {
1245 					snd_mtxunlock(sc->lock);
1246 					chn_intr(sc->pch[i].channel);
1247 					snd_mtxlock(sc->lock);
1248 				} else
1249 					emu_timer_enable(sc->card, sc->pch[i].timer, 0);
1250 			}
1251 		/* ADC may install timer to get low-latency interrupts */
1252 		if ((sc->rch_adc.channel) && (sc->rch_adc.run)) {
1253 			snd_mtxunlock(sc->lock);
1254 			chn_intr(sc->rch_adc.channel);
1255 			snd_mtxlock(sc->lock);
1256 		}
1257 		/*
1258 		 * EFX does not use timer, because it will fill
1259 		 * buffer at least 32x times faster than ADC.
1260 		 */
1261 	}
1262 
1263 	if (stat & (EMU_IPR_ADCBUFFULL | EMU_IPR_ADCBUFHALFFULL)) {
1264 		ack |= stat & (EMU_IPR_ADCBUFFULL | EMU_IPR_ADCBUFHALFFULL);
1265 		if (sc->rch_adc.channel) {
1266 			snd_mtxunlock(sc->lock);
1267 			chn_intr(sc->rch_adc.channel);
1268 			snd_mtxlock(sc->lock);
1269 		}
1270 	}
1271 
1272 	if (stat & (EMU_IPR_EFXBUFFULL | EMU_IPR_EFXBUFHALFFULL)) {
1273 		ack |= stat & (EMU_IPR_EFXBUFFULL | EMU_IPR_EFXBUFHALFFULL);
1274 		if (sc->rch_efx.channel) {
1275 			snd_mtxunlock(sc->lock);
1276 			chn_intr(sc->rch_efx.channel);
1277 			snd_mtxlock(sc->lock);
1278 		}
1279 	}
1280 	snd_mtxunlock(sc->lock);
1281 
1282 	return (ack);
1283 }
1284 
1285 static int
1286 emu_pcm_init(struct emu_pcm_info *sc)
1287 {
1288 	sc->bufsz = pcm_getbuffersize(sc->dev, EMUPAGESIZE, EMU_REC_BUFSZ, EMU_MAX_BUFSZ);
1289 	return (0);
1290 }
1291 
1292 static int
1293 emu_pcm_uninit(struct emu_pcm_info *sc __unused)
1294 {
1295 	return (0);
1296 }
1297 
1298 static int
1299 emu_pcm_probe(device_t dev)
1300 {
1301 	uintptr_t func, route, r;
1302 	const char *rt;
1303 	char buffer[255];
1304 
1305 	r = BUS_READ_IVAR(device_get_parent(dev), dev, EMU_VAR_FUNC, &func);
1306 
1307 	if (func != SCF_PCM)
1308 		return (ENXIO);
1309 
1310 	rt = "UNKNOWN";
1311 	r = BUS_READ_IVAR(device_get_parent(dev), dev, EMU_VAR_ROUTE, &route);
1312 	switch (route) {
1313 	case RT_FRONT:
1314 		rt = "front";
1315 		break;
1316 	case RT_REAR:
1317 		rt = "rear";
1318 		break;
1319 	case RT_CENTER:
1320 		rt = "center";
1321 		break;
1322 	case RT_SUB:
1323 		rt = "subwoofer";
1324 		break;
1325 	case RT_SIDE:
1326 		rt = "side";
1327 		break;
1328 	case RT_MCHRECORD:
1329 		rt = "multichannel recording";
1330 		break;
1331 	}
1332 
1333 	snprintf(buffer, 255, "EMU10Kx DSP %s PCM interface", rt);
1334 	device_set_desc_copy(dev, buffer);
1335 	return (0);
1336 }
1337 
1338 static int
1339 emu_pcm_attach(device_t dev)
1340 {
1341 	struct emu_pcm_info *sc;
1342 	unsigned int i;
1343 	char status[SND_STATUSLEN];
1344 	uint32_t inte, ipr;
1345 	uintptr_t route, r, ivar;
1346 
1347 	sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO);
1348 	sc->card = (struct emu_sc_info *)(device_get_softc(device_get_parent(dev)));
1349 	if (sc->card == NULL) {
1350 		device_printf(dev, "cannot get bridge conf\n");
1351 		free(sc, M_DEVBUF);
1352 		return (ENXIO);
1353 	}
1354 
1355 	sc->lock = snd_mtxcreate(device_get_nameunit(dev), "snd_emu10kx pcm softc");
1356 	sc->dev = dev;
1357 
1358 	r = BUS_READ_IVAR(device_get_parent(dev), dev, EMU_VAR_ISEMU10K1, &ivar);
1359 	sc->is_emu10k1 = ivar ? 1 : 0;
1360 
1361 	r = BUS_READ_IVAR(device_get_parent(dev), dev, EMU_VAR_MCH_DISABLED, &ivar);
1362 	sc->mch_disabled = ivar ? 1 : 0;
1363 
1364 	sc->codec = NULL;
1365 
1366 	for (i = 0; i < 8; i++) {
1367 		sc->rt.routing_left[i] = i;
1368 		sc->rt.amounts_left[i] = 0x00;
1369 		sc->rt.routing_right[i] = i;
1370 		sc->rt.amounts_right[i] = 0x00;
1371 	}
1372 
1373 	for (i = 0; i < 8; i++) {
1374 		sc->rt_mono.routing_left[i] = i;
1375 		sc->rt_mono.amounts_left[i] = 0x00;
1376 		sc->rt_mono.routing_right[i] = i;
1377 		sc->rt_mono.amounts_right[i] = 0x00;
1378 	}
1379 
1380 	sc->emu10k1_volcache[0][0] = 75;
1381 	sc->emu10k1_volcache[1][0] = 75;
1382 	sc->emu10k1_volcache[0][1] = 75;
1383 	sc->emu10k1_volcache[1][1] = 75;
1384 	r = BUS_READ_IVAR(device_get_parent(dev), dev, EMU_VAR_ROUTE, &route);
1385 	sc->route = route;
1386 	switch (route) {
1387 	case RT_FRONT:
1388 		sc->rt.amounts_left[0] = 0xff;
1389 		sc->rt.amounts_right[1] = 0xff;
1390 		sc->rt_mono.amounts_left[0] = 0xff;
1391 		sc->rt_mono.amounts_left[1] = 0xff;
1392 		if (sc->is_emu10k1)
1393 			sc->codec = AC97_CREATE(dev, sc, emu_ac97);
1394 		else
1395 			sc->codec = AC97_CREATE(dev, sc, emu_eac97);
1396 		sc->ac97_mixerclass = NULL;
1397 		if (sc->codec != NULL)
1398 			sc->ac97_mixerclass = ac97_getmixerclass();
1399 		if (mixer_init(dev, &emudspmixer_class, sc)) {
1400 			device_printf(dev, "failed to initialize DSP mixer\n");
1401 			goto bad;
1402 		}
1403 		break;
1404 	case RT_REAR:
1405 		sc->rt.amounts_left[2] = 0xff;
1406 		sc->rt.amounts_right[3] = 0xff;
1407 		sc->rt_mono.amounts_left[2] = 0xff;
1408 		sc->rt_mono.amounts_left[3] = 0xff;
1409 		if (mixer_init(dev, &emudspmixer_class, sc)) {
1410 			device_printf(dev, "failed to initialize mixer\n");
1411 			goto bad;
1412 		}
1413 		break;
1414 	case RT_CENTER:
1415 		sc->rt.amounts_left[4] = 0xff;
1416 		sc->rt_mono.amounts_left[4] = 0xff;
1417 		if (mixer_init(dev, &emudspmixer_class, sc)) {
1418 			device_printf(dev, "failed to initialize mixer\n");
1419 			goto bad;
1420 		}
1421 		break;
1422 	case RT_SUB:
1423 		sc->rt.amounts_left[5] = 0xff;
1424 		sc->rt_mono.amounts_left[5] = 0xff;
1425 		if (mixer_init(dev, &emudspmixer_class, sc)) {
1426 			device_printf(dev, "failed to initialize mixer\n");
1427 			goto bad;
1428 		}
1429 		break;
1430 	case RT_SIDE:
1431 		sc->rt.amounts_left[6] = 0xff;
1432 		sc->rt.amounts_right[7] = 0xff;
1433 		sc->rt_mono.amounts_left[6] = 0xff;
1434 		sc->rt_mono.amounts_left[7] = 0xff;
1435 		if (mixer_init(dev, &emudspmixer_class, sc)) {
1436 			device_printf(dev, "failed to initialize mixer\n");
1437 			goto bad;
1438 		}
1439 		break;
1440 	case RT_MCHRECORD:
1441 		if (mixer_init(dev, &emuefxmixer_class, sc)) {
1442 			device_printf(dev, "failed to initialize EFX mixer\n");
1443 			goto bad;
1444 		}
1445 		break;
1446 	default:
1447 		device_printf(dev, "invalid default route\n");
1448 		goto bad;
1449 	}
1450 
1451 	inte = EMU_INTE_INTERTIMERENB;
1452 	ipr = EMU_IPR_INTERVALTIMER; /* Used by playback & ADC */
1453 	sc->ihandle = emu_intr_register(sc->card, inte, ipr, &emu_pcm_intr, sc);
1454 
1455 	if (emu_pcm_init(sc) == -1) {
1456 		device_printf(dev, "unable to initialize PCM part of the card\n");
1457 		goto bad;
1458 	}
1459 
1460 	/*
1461 	 * We don't register interrupt handler with snd_setup_intr
1462 	 * in pcm device. Mark pcm device as MPSAFE manually.
1463 	 */
1464 	pcm_setflags(dev, pcm_getflags(dev) | SD_F_MPSAFE);
1465 
1466 	/* XXX we should better get number of available channels from parent */
1467 	if (pcm_register(dev, sc, (route == RT_FRONT) ? MAX_CHANNELS : 1, (route == RT_FRONT) ? 1 : 0)) {
1468 		device_printf(dev, "can't register PCM channels!\n");
1469 		goto bad;
1470 	}
1471 	sc->pnum = 0;
1472 	if (route != RT_MCHRECORD)
1473 		pcm_addchan(dev, PCMDIR_PLAY, &emupchan_class, sc);
1474 	if (route == RT_FRONT) {
1475 		for (i = 1; i < MAX_CHANNELS; i++)
1476 			pcm_addchan(dev, PCMDIR_PLAY, &emupchan_class, sc);
1477 		pcm_addchan(dev, PCMDIR_REC, &emurchan_class, sc);
1478 	}
1479 	if (route == RT_MCHRECORD)
1480 		pcm_addchan(dev, PCMDIR_REC, &emufxrchan_class, sc);
1481 
1482 	snprintf(status, SND_STATUSLEN, "on %s", device_get_nameunit(device_get_parent(dev)));
1483 	pcm_setstatus(dev, status);
1484 
1485 	return (0);
1486 
1487 bad:
1488 	if (sc->codec)
1489 		ac97_destroy(sc->codec);
1490 	if (sc->lock)
1491 		snd_mtxfree(sc->lock);
1492 	free(sc, M_DEVBUF);
1493 	return (ENXIO);
1494 }
1495 
1496 static int
1497 emu_pcm_detach(device_t dev)
1498 {
1499 	int r;
1500 	struct emu_pcm_info *sc;
1501 
1502 	sc = pcm_getdevinfo(dev);
1503 
1504 	r = pcm_unregister(dev);
1505 
1506 	if (r) 	return (r);
1507 
1508 	emu_pcm_uninit(sc);
1509 
1510 	if (sc->lock)
1511 		snd_mtxfree(sc->lock);
1512 	free(sc, M_DEVBUF);
1513 
1514 	return (0);
1515 }
1516 
1517 static device_method_t emu_pcm_methods[] = {
1518 	DEVMETHOD(device_probe, emu_pcm_probe),
1519 	DEVMETHOD(device_attach, emu_pcm_attach),
1520 	DEVMETHOD(device_detach, emu_pcm_detach),
1521 
1522 	DEVMETHOD_END
1523 };
1524 
1525 static driver_t emu_pcm_driver = {
1526 	"pcm",
1527 	emu_pcm_methods,
1528 	PCM_SOFTC_SIZE,
1529 	NULL,
1530 	0,
1531 	NULL
1532 };
1533 DRIVER_MODULE(snd_emu10kx_pcm, emu10kx, emu_pcm_driver, pcm_devclass, 0, 0);
1534 MODULE_DEPEND(snd_emu10kx_pcm, snd_emu10kx, SND_EMU10KX_MINVER, SND_EMU10KX_PREFVER, SND_EMU10KX_MAXVER);
1535 MODULE_DEPEND(snd_emu10kx_pcm, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
1536 MODULE_VERSION(snd_emu10kx_pcm, SND_EMU10KX_PREFVER);
1537