1/*-
2 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
3 * Copyright (c) 1997,1998 Luigi Rizzo
4 * Copyright (c) 1994,1995 Hannu Savolainen
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 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#ifdef HAVE_KERNEL_OPTION_HEADERS
30#include "opt_snd.h"
31#endif
32
33#include <dev/sound/pcm/sound.h>
34#include <dev/sound/isa/ad1816.h>
35
36#include <isa/isavar.h>
37
38#include "mixer_if.h"
39
40SND_DECLARE_FILE("$FreeBSD$");
41
42struct ad1816_info;
43
44struct ad1816_chinfo {
45	struct ad1816_info *parent;
46	struct pcm_channel *channel;
47	struct snd_dbuf *buffer;
48	int dir, blksz;
49};
50
51struct ad1816_info {
52	struct resource *io_base;	/* primary I/O address for the board */
53	int io_rid;
54	struct resource *irq;
55	int irq_rid;
56	struct resource *drq1;		/* play */
57	int drq1_rid;
58	struct resource *drq2;		/* rec */
59	int drq2_rid;
60	void *ih;
61	bus_dma_tag_t parent_dmat;
62	struct mtx *lock;
63
64	unsigned int bufsize;
65	struct ad1816_chinfo pch, rch;
66};
67
68static u_int32_t ad1816_fmt[] = {
69	SND_FORMAT(AFMT_U8, 1, 0),
70	SND_FORMAT(AFMT_U8, 2, 0),
71	SND_FORMAT(AFMT_S16_LE, 1, 0),
72	SND_FORMAT(AFMT_S16_LE, 2, 0),
73	SND_FORMAT(AFMT_MU_LAW, 1, 0),
74	SND_FORMAT(AFMT_MU_LAW, 2, 0),
75	SND_FORMAT(AFMT_A_LAW, 1, 0),
76	SND_FORMAT(AFMT_A_LAW, 2, 0),
77	0
78};
79
80static struct pcmchan_caps ad1816_caps = {4000, 55200, ad1816_fmt, 0};
81
82#define AD1816_MUTE 31		/* value for mute */
83
84static void
85ad1816_lock(struct ad1816_info *ad1816)
86{
87	snd_mtxlock(ad1816->lock);
88}
89
90static void
91ad1816_unlock(struct ad1816_info *ad1816)
92{
93	snd_mtxunlock(ad1816->lock);
94}
95
96static int
97port_rd(struct resource *port, int off)
98{
99	if (port)
100		return bus_space_read_1(rman_get_bustag(port),
101					rman_get_bushandle(port),
102					off);
103	else
104		return -1;
105}
106
107static void
108port_wr(struct resource *port, int off, u_int8_t data)
109{
110	if (port)
111		bus_space_write_1(rman_get_bustag(port),
112				  rman_get_bushandle(port),
113				  off, data);
114}
115
116static int
117io_rd(struct ad1816_info *ad1816, int reg)
118{
119	return port_rd(ad1816->io_base, reg);
120}
121
122static void
123io_wr(struct ad1816_info *ad1816, int reg, u_int8_t data)
124{
125	port_wr(ad1816->io_base, reg, data);
126}
127
128static void
129ad1816_intr(void *arg)
130{
131    	struct ad1816_info *ad1816 = (struct ad1816_info *)arg;
132    	unsigned char   c, served = 0;
133
134	ad1816_lock(ad1816);
135    	/* get interrupt status */
136    	c = io_rd(ad1816, AD1816_INT);
137
138    	/* check for stray interrupts */
139    	if (c & ~(AD1816_INTRCI | AD1816_INTRPI)) {
140		printf("pcm: stray int (%x)\n", c);
141		c &= AD1816_INTRCI | AD1816_INTRPI;
142    	}
143    	/* check for capture interrupt */
144    	if (sndbuf_runsz(ad1816->rch.buffer) && (c & AD1816_INTRCI)) {
145		ad1816_unlock(ad1816);
146		chn_intr(ad1816->rch.channel);
147		ad1816_lock(ad1816);
148		served |= AD1816_INTRCI;		/* cp served */
149    	}
150    	/* check for playback interrupt */
151    	if (sndbuf_runsz(ad1816->pch.buffer) && (c & AD1816_INTRPI)) {
152		ad1816_unlock(ad1816);
153		chn_intr(ad1816->pch.channel);
154		ad1816_lock(ad1816);
155		served |= AD1816_INTRPI;		/* pb served */
156    	}
157    	if (served == 0) {
158		/* this probably means this is not a (working) ad1816 chip, */
159		/* or an error in dma handling                              */
160		printf("pcm: int without reason (%x)\n", c);
161		c = 0;
162    	} else c &= ~served;
163    	io_wr(ad1816, AD1816_INT, c);
164    	c = io_rd(ad1816, AD1816_INT);
165    	if (c != 0) printf("pcm: int clear failed (%x)\n", c);
166	ad1816_unlock(ad1816);
167}
168
169static int
170ad1816_wait_init(struct ad1816_info *ad1816, int x)
171{
172    	int             n = 0;	/* to shut up the compiler... */
173
174    	for (; x--;)
175		if ((n = (io_rd(ad1816, AD1816_ALE) & AD1816_BUSY)) == 0) DELAY(10);
176		else return n;
177    	printf("ad1816_wait_init failed 0x%02x.\n", n);
178    	return -1;
179}
180
181static unsigned short
182ad1816_read(struct ad1816_info *ad1816, unsigned int reg)
183{
184    	u_short         x = 0;
185
186    	if (ad1816_wait_init(ad1816, 100) == -1) return 0;
187    	io_wr(ad1816, AD1816_ALE, 0);
188    	io_wr(ad1816, AD1816_ALE, (reg & AD1816_ALEMASK));
189    	if (ad1816_wait_init(ad1816, 100) == -1) return 0;
190    	x = (io_rd(ad1816, AD1816_HIGH) << 8) | io_rd(ad1816, AD1816_LOW);
191    	return x;
192}
193
194static void
195ad1816_write(struct ad1816_info *ad1816, unsigned int reg, unsigned short data)
196{
197    	if (ad1816_wait_init(ad1816, 100) == -1) return;
198    	io_wr(ad1816, AD1816_ALE, (reg & AD1816_ALEMASK));
199    	io_wr(ad1816, AD1816_LOW,  (data & 0x000000ff));
200    	io_wr(ad1816, AD1816_HIGH, (data & 0x0000ff00) >> 8);
201}
202
203/* -------------------------------------------------------------------- */
204
205static int
206ad1816mix_init(struct snd_mixer *m)
207{
208	mix_setdevs(m, AD1816_MIXER_DEVICES);
209	mix_setrecdevs(m, AD1816_REC_DEVICES);
210	return 0;
211}
212
213static int
214ad1816mix_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
215{
216	struct ad1816_info *ad1816 = mix_getdevinfo(m);
217    	u_short reg = 0;
218
219    	/* Scale volumes */
220    	left = AD1816_MUTE - (AD1816_MUTE * left) / 100;
221    	right = AD1816_MUTE - (AD1816_MUTE * right) / 100;
222
223    	reg = (left << 8) | right;
224
225    	/* do channel selective muting if volume is zero */
226    	if (left == AD1816_MUTE)	reg |= 0x8000;
227    	if (right == AD1816_MUTE)	reg |= 0x0080;
228
229	ad1816_lock(ad1816);
230    	switch (dev) {
231    	case SOUND_MIXER_VOLUME:	/* Register 14 master volume */
232		ad1816_write(ad1816, 14, reg);
233		break;
234
235    	case SOUND_MIXER_CD:	/* Register 15 cd */
236    	case SOUND_MIXER_LINE1:
237		ad1816_write(ad1816, 15, reg);
238		break;
239
240    	case SOUND_MIXER_SYNTH:	/* Register 16 synth */
241		ad1816_write(ad1816, 16, reg);
242		break;
243
244    	case SOUND_MIXER_PCM:	/* Register 4 pcm */
245		ad1816_write(ad1816, 4, reg);
246		break;
247
248    	case SOUND_MIXER_LINE:
249    	case SOUND_MIXER_LINE3:	/* Register 18 line in */
250		ad1816_write(ad1816, 18, reg);
251		break;
252
253    	case SOUND_MIXER_MIC:	/* Register 19 mic volume */
254		ad1816_write(ad1816, 19, reg & ~0xff);	/* mic is mono */
255		break;
256
257    	case SOUND_MIXER_IGAIN:
258		/* and now to something completely different ... */
259		ad1816_write(ad1816, 20, ((ad1816_read(ad1816, 20) & ~0x0f0f)
260	      	| (((AD1816_MUTE - left) / 2) << 8) /* four bits of adc gain */
261	      	| ((AD1816_MUTE - right) / 2)));
262		break;
263
264    	default:
265		printf("ad1816_mixer_set(): unknown device.\n");
266		break;
267    	}
268	ad1816_unlock(ad1816);
269
270    	left = ((AD1816_MUTE - left) * 100) / AD1816_MUTE;
271    	right = ((AD1816_MUTE - right) * 100) / AD1816_MUTE;
272
273    	return left | (right << 8);
274}
275
276static u_int32_t
277ad1816mix_setrecsrc(struct snd_mixer *m, u_int32_t src)
278{
279	struct ad1816_info *ad1816 = mix_getdevinfo(m);
280    	int dev;
281
282    	switch (src) {
283    	case SOUND_MASK_LINE:
284    	case SOUND_MASK_LINE3:
285		dev = 0x00;
286		break;
287
288    	case SOUND_MASK_CD:
289    	case SOUND_MASK_LINE1:
290		dev = 0x20;
291		break;
292
293    	case SOUND_MASK_MIC:
294    	default:
295		dev = 0x50;
296		src = SOUND_MASK_MIC;
297    	}
298
299    	dev |= dev << 8;
300	ad1816_lock(ad1816);
301    	ad1816_write(ad1816, 20, (ad1816_read(ad1816, 20) & ~0x7070) | dev);
302	ad1816_unlock(ad1816);
303    	return src;
304}
305
306static kobj_method_t ad1816mixer_methods[] = {
307    	KOBJMETHOD(mixer_init,		ad1816mix_init),
308    	KOBJMETHOD(mixer_set,		ad1816mix_set),
309    	KOBJMETHOD(mixer_setrecsrc,	ad1816mix_setrecsrc),
310	KOBJMETHOD_END
311};
312MIXER_DECLARE(ad1816mixer);
313
314/* -------------------------------------------------------------------- */
315/* channel interface */
316static void *
317ad1816chan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
318{
319	struct ad1816_info *ad1816 = devinfo;
320	struct ad1816_chinfo *ch = (dir == PCMDIR_PLAY)? &ad1816->pch : &ad1816->rch;
321
322	ch->dir = dir;
323	ch->parent = ad1816;
324	ch->channel = c;
325	ch->buffer = b;
326	if (sndbuf_alloc(ch->buffer, ad1816->parent_dmat, 0, ad1816->bufsize) != 0)
327		return NULL;
328
329	sndbuf_dmasetup(ch->buffer, (dir == PCMDIR_PLAY) ? ad1816->drq1 :
330	    ad1816->drq2);
331	if (SND_DMA(ch->buffer))
332		sndbuf_dmasetdir(ch->buffer, dir);
333
334	return ch;
335}
336
337static int
338ad1816chan_setformat(kobj_t obj, void *data, u_int32_t format)
339{
340	struct ad1816_chinfo *ch = data;
341  	struct ad1816_info *ad1816 = ch->parent;
342    	int fmt = AD1816_U8, reg;
343
344	ad1816_lock(ad1816);
345    	if (ch->dir == PCMDIR_PLAY) {
346        	reg = AD1816_PLAY;
347        	ad1816_write(ad1816, 8, 0x0000);	/* reset base and current counter */
348        	ad1816_write(ad1816, 9, 0x0000);	/* for playback and capture */
349    	} else {
350        	reg = AD1816_CAPT;
351        	ad1816_write(ad1816, 10, 0x0000);
352        	ad1816_write(ad1816, 11, 0x0000);
353    	}
354    	switch (AFMT_ENCODING(format)) {
355    	case AFMT_A_LAW:
356        	fmt = AD1816_ALAW;
357		break;
358
359    	case AFMT_MU_LAW:
360		fmt = AD1816_MULAW;
361		break;
362
363    	case AFMT_S16_LE:
364		fmt = AD1816_S16LE;
365		break;
366
367    	case AFMT_S16_BE:
368		fmt = AD1816_S16BE;
369		break;
370
371    	case AFMT_U8:
372		fmt = AD1816_U8;
373		break;
374    	}
375    	if (AFMT_CHANNEL(format) > 1) fmt |= AD1816_STEREO;
376    	io_wr(ad1816, reg, fmt);
377	ad1816_unlock(ad1816);
378#if 0
379    	return format;
380#else
381    	return 0;
382#endif
383}
384
385static u_int32_t
386ad1816chan_setspeed(kobj_t obj, void *data, u_int32_t speed)
387{
388	struct ad1816_chinfo *ch = data;
389    	struct ad1816_info *ad1816 = ch->parent;
390
391    	RANGE(speed, 4000, 55200);
392	ad1816_lock(ad1816);
393    	ad1816_write(ad1816, (ch->dir == PCMDIR_PLAY)? 2 : 3, speed);
394	ad1816_unlock(ad1816);
395    	return speed;
396}
397
398static u_int32_t
399ad1816chan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize)
400{
401	struct ad1816_chinfo *ch = data;
402
403	ch->blksz = blocksize;
404	return ch->blksz;
405}
406
407static int
408ad1816chan_trigger(kobj_t obj, void *data, int go)
409{
410	struct ad1816_chinfo *ch = data;
411    	struct ad1816_info *ad1816 = ch->parent;
412    	int wr, reg;
413
414	if (!PCMTRIG_COMMON(go))
415		return 0;
416
417	sndbuf_dma(ch->buffer, go);
418    	wr = (ch->dir == PCMDIR_PLAY);
419    	reg = wr? AD1816_PLAY : AD1816_CAPT;
420	ad1816_lock(ad1816);
421    	switch (go) {
422    	case PCMTRIG_START:
423		/* start only if not already running */
424		if (!(io_rd(ad1816, reg) & AD1816_ENABLE)) {
425	    		int cnt = ((ch->blksz) >> 2) - 1;
426	    		ad1816_write(ad1816, wr? 8 : 10, cnt); /* count */
427	    		ad1816_write(ad1816, wr? 9 : 11, 0); /* reset cur cnt */
428	    		ad1816_write(ad1816, 1, ad1816_read(ad1816, 1) |
429				     (wr? 0x8000 : 0x4000)); /* enable int */
430	    		/* enable playback */
431	    		io_wr(ad1816, reg, io_rd(ad1816, reg) | AD1816_ENABLE);
432	    		if (!(io_rd(ad1816, reg) & AD1816_ENABLE))
433				printf("ad1816: failed to start %s DMA!\n",
434				       wr? "play" : "rec");
435		}
436		break;
437
438    	case PCMTRIG_STOP:
439    	case PCMTRIG_ABORT:		/* XXX check this... */
440		/* we don't test here if it is running... */
441		if (wr) {
442	    		ad1816_write(ad1816, 1, ad1816_read(ad1816, 1) &
443				     ~(wr? 0x8000 : 0x4000));
444	    		/* disable int */
445	    		io_wr(ad1816, reg, io_rd(ad1816, reg) & ~AD1816_ENABLE);
446	    		/* disable playback */
447	    		if (io_rd(ad1816, reg) & AD1816_ENABLE)
448				printf("ad1816: failed to stop %s DMA!\n",
449				       wr? "play" : "rec");
450	    		ad1816_write(ad1816, wr? 8 : 10, 0); /* reset base cnt */
451	    		ad1816_write(ad1816, wr? 9 : 11, 0); /* reset cur cnt */
452		}
453		break;
454    	}
455	ad1816_unlock(ad1816);
456    	return 0;
457}
458
459static u_int32_t
460ad1816chan_getptr(kobj_t obj, void *data)
461{
462	struct ad1816_chinfo *ch = data;
463	return sndbuf_dmaptr(ch->buffer);
464}
465
466static struct pcmchan_caps *
467ad1816chan_getcaps(kobj_t obj, void *data)
468{
469	return &ad1816_caps;
470}
471
472static kobj_method_t ad1816chan_methods[] = {
473    	KOBJMETHOD(channel_init,		ad1816chan_init),
474    	KOBJMETHOD(channel_setformat,		ad1816chan_setformat),
475    	KOBJMETHOD(channel_setspeed,		ad1816chan_setspeed),
476    	KOBJMETHOD(channel_setblocksize,	ad1816chan_setblocksize),
477    	KOBJMETHOD(channel_trigger,		ad1816chan_trigger),
478    	KOBJMETHOD(channel_getptr,		ad1816chan_getptr),
479    	KOBJMETHOD(channel_getcaps,		ad1816chan_getcaps),
480	KOBJMETHOD_END
481};
482CHANNEL_DECLARE(ad1816chan);
483
484/* -------------------------------------------------------------------- */
485
486static void
487ad1816_release_resources(struct ad1816_info *ad1816, device_t dev)
488{
489    	if (ad1816->irq) {
490   		if (ad1816->ih)
491			bus_teardown_intr(dev, ad1816->irq, ad1816->ih);
492		bus_release_resource(dev, SYS_RES_IRQ, ad1816->irq_rid, ad1816->irq);
493		ad1816->irq = NULL;
494    	}
495    	if (ad1816->drq1) {
496		isa_dma_release(rman_get_start(ad1816->drq1));
497		bus_release_resource(dev, SYS_RES_DRQ, ad1816->drq1_rid, ad1816->drq1);
498		ad1816->drq1 = NULL;
499    	}
500    	if (ad1816->drq2) {
501		isa_dma_release(rman_get_start(ad1816->drq2));
502		bus_release_resource(dev, SYS_RES_DRQ, ad1816->drq2_rid, ad1816->drq2);
503		ad1816->drq2 = NULL;
504    	}
505    	if (ad1816->io_base) {
506		bus_release_resource(dev, SYS_RES_IOPORT, ad1816->io_rid, ad1816->io_base);
507		ad1816->io_base = NULL;
508    	}
509    	if (ad1816->parent_dmat) {
510		bus_dma_tag_destroy(ad1816->parent_dmat);
511		ad1816->parent_dmat = 0;
512    	}
513	if (ad1816->lock)
514		snd_mtxfree(ad1816->lock);
515
516     	free(ad1816, M_DEVBUF);
517}
518
519static int
520ad1816_alloc_resources(struct ad1816_info *ad1816, device_t dev)
521{
522    	int ok = 1, pdma, rdma;
523
524	if (!ad1816->io_base)
525    		ad1816->io_base = bus_alloc_resource_any(dev,
526			SYS_RES_IOPORT, &ad1816->io_rid, RF_ACTIVE);
527	if (!ad1816->irq)
528    		ad1816->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
529			&ad1816->irq_rid, RF_ACTIVE);
530	if (!ad1816->drq1)
531    		ad1816->drq1 = bus_alloc_resource_any(dev, SYS_RES_DRQ,
532			&ad1816->drq1_rid, RF_ACTIVE);
533    	if (!ad1816->drq2)
534        	ad1816->drq2 = bus_alloc_resource_any(dev, SYS_RES_DRQ,
535			&ad1816->drq2_rid, RF_ACTIVE);
536
537    	if (!ad1816->io_base || !ad1816->drq1 || !ad1816->irq) ok = 0;
538
539	if (ok) {
540		pdma = rman_get_start(ad1816->drq1);
541		isa_dma_acquire(pdma);
542		isa_dmainit(pdma, ad1816->bufsize);
543		if (ad1816->drq2) {
544			rdma = rman_get_start(ad1816->drq2);
545			isa_dma_acquire(rdma);
546			isa_dmainit(rdma, ad1816->bufsize);
547		} else
548			rdma = pdma;
549    		if (pdma == rdma)
550			pcm_setflags(dev, pcm_getflags(dev) | SD_F_SIMPLEX);
551	}
552
553    	return ok;
554}
555
556static int
557ad1816_init(struct ad1816_info *ad1816, device_t dev)
558{
559    	ad1816_write(ad1816, 1, 0x2);	/* disable interrupts */
560    	ad1816_write(ad1816, 32, 0x90F0);	/* SoundSys Mode, split fmt */
561
562    	ad1816_write(ad1816, 5, 0x8080);	/* FM volume mute */
563    	ad1816_write(ad1816, 6, 0x8080);	/* I2S1 volume mute */
564    	ad1816_write(ad1816, 7, 0x8080);	/* I2S0 volume mute */
565    	ad1816_write(ad1816, 17, 0x8888);	/* VID Volume mute */
566    	ad1816_write(ad1816, 20, 0x5050);	/* recsrc mic, agc off */
567    	/* adc gain is set to 0 */
568
569	return 0;
570}
571
572static int
573ad1816_probe(device_t dev)
574{
575    	char *s = NULL;
576    	u_int32_t logical_id = isa_get_logicalid(dev);
577
578    	switch (logical_id) {
579    	case 0x80719304: /* ADS7180 */
580 		s = "AD1816";
581 		break;
582    	case 0x50719304: /* ADS7150 */
583 		s = "AD1815";
584 		break;
585    	}
586
587    	if (s) {
588		device_set_desc(dev, s);
589		return BUS_PROBE_DEFAULT;
590    	}
591    	return ENXIO;
592}
593
594static int
595ad1816_attach(device_t dev)
596{
597	struct ad1816_info *ad1816;
598    	char status[SND_STATUSLEN], status2[SND_STATUSLEN];
599
600	ad1816 = malloc(sizeof(*ad1816), M_DEVBUF, M_WAITOK | M_ZERO);
601	ad1816->lock = snd_mtxcreate(device_get_nameunit(dev),
602	    "snd_ad1816 softc");
603	ad1816->io_rid = 2;
604	ad1816->irq_rid = 0;
605	ad1816->drq1_rid = 0;
606	ad1816->drq2_rid = 1;
607	ad1816->bufsize = pcm_getbuffersize(dev, 4096, DSP_BUFFSIZE, 65536);
608
609    	if (!ad1816_alloc_resources(ad1816, dev)) goto no;
610    	ad1816_init(ad1816, dev);
611    	if (mixer_init(dev, &ad1816mixer_class, ad1816)) goto no;
612
613	snd_setup_intr(dev, ad1816->irq, 0, ad1816_intr, ad1816, &ad1816->ih);
614    	if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2,
615			/*boundary*/0,
616			/*lowaddr*/BUS_SPACE_MAXADDR_24BIT,
617			/*highaddr*/BUS_SPACE_MAXADDR,
618			/*filter*/NULL, /*filterarg*/NULL,
619			/*maxsize*/ad1816->bufsize, /*nsegments*/1,
620			/*maxsegz*/0x3ffff,
621			/*flags*/0, /*lockfunc*/busdma_lock_mutex,
622			/*lockarg*/ &Giant, &ad1816->parent_dmat) != 0) {
623		device_printf(dev, "unable to create dma tag\n");
624		goto no;
625    	}
626    	if (ad1816->drq2)
627		snprintf(status2, SND_STATUSLEN, ":%jd", rman_get_start(ad1816->drq2));
628	else
629		status2[0] = '\0';
630
631    	snprintf(status, SND_STATUSLEN, "at io 0x%jx irq %jd drq %jd%s bufsz %u %s",
632    	     	rman_get_start(ad1816->io_base),
633		rman_get_start(ad1816->irq),
634		rman_get_start(ad1816->drq1),
635		status2,
636		ad1816->bufsize,
637		PCM_KLDSTRING(snd_ad1816));
638
639    	if (pcm_register(dev, ad1816, 1, 1)) goto no;
640    	pcm_addchan(dev, PCMDIR_REC, &ad1816chan_class, ad1816);
641    	pcm_addchan(dev, PCMDIR_PLAY, &ad1816chan_class, ad1816);
642    	pcm_setstatus(dev, status);
643
644    	return 0;
645no:
646    	ad1816_release_resources(ad1816, dev);
647
648    	return ENXIO;
649
650}
651
652static int
653ad1816_detach(device_t dev)
654{
655	int r;
656	struct ad1816_info *ad1816;
657
658	r = pcm_unregister(dev);
659	if (r)
660		return r;
661
662	ad1816 = pcm_getdevinfo(dev);
663    	ad1816_release_resources(ad1816, dev);
664	return 0;
665}
666
667static device_method_t ad1816_methods[] = {
668	/* Device interface */
669	DEVMETHOD(device_probe,		ad1816_probe),
670	DEVMETHOD(device_attach,	ad1816_attach),
671	DEVMETHOD(device_detach,	ad1816_detach),
672
673	{ 0, 0 }
674};
675
676static driver_t ad1816_driver = {
677	"pcm",
678	ad1816_methods,
679	PCM_SOFTC_SIZE,
680};
681
682DRIVER_MODULE(snd_ad1816, isa, ad1816_driver, pcm_devclass, 0, 0);
683DRIVER_MODULE(snd_ad1816, acpi, ad1816_driver, pcm_devclass, 0, 0);
684MODULE_DEPEND(snd_ad1816, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
685MODULE_VERSION(snd_ad1816, 1);
686
687
688