1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#ifdef HAVE_KERNEL_OPTION_HEADERS
29#include "opt_snd.h"
30#endif
31
32#include <dev/sound/pcm/sound.h>
33
34#include <dev/pci/pcireg.h>
35#include <dev/pci/pcivar.h>
36
37#include  <dev/sound/isa/sb.h>
38#include  <dev/sound/chip.h>
39
40#include "mixer_if.h"
41
42SND_DECLARE_FILE("$FreeBSD$");
43
44#define SOLO_DEFAULT_BUFSZ 16384
45#define ABS(x) (((x) < 0)? -(x) : (x))
46
47/* if defined, playback always uses the 2nd channel and full duplex works */
48#define ESS18XX_DUPLEX	1
49
50/* more accurate clocks and split audio1/audio2 rates */
51#define ESS18XX_NEWSPEED
52
53/* 1 = INTR_MPSAFE, 0 = GIANT */
54#define ESS18XX_MPSAFE	1
55
56static u_int32_t ess_playfmt[] = {
57	SND_FORMAT(AFMT_U8, 1, 0),
58	SND_FORMAT(AFMT_U8, 2, 0),
59	SND_FORMAT(AFMT_S8, 1, 0),
60	SND_FORMAT(AFMT_S8, 2, 0),
61	SND_FORMAT(AFMT_S16_LE, 1, 0),
62	SND_FORMAT(AFMT_S16_LE, 2, 0),
63	SND_FORMAT(AFMT_U16_LE, 1, 0),
64	SND_FORMAT(AFMT_U16_LE, 2, 0),
65	0
66};
67static struct pcmchan_caps ess_playcaps = {6000, 48000, ess_playfmt, 0};
68
69/*
70 * Recording output is byte-swapped
71 */
72static u_int32_t ess_recfmt[] = {
73	SND_FORMAT(AFMT_U8, 1, 0),
74	SND_FORMAT(AFMT_U8, 2, 0),
75	SND_FORMAT(AFMT_S8, 1, 0),
76	SND_FORMAT(AFMT_S8, 2, 0),
77	SND_FORMAT(AFMT_S16_BE, 1, 0),
78	SND_FORMAT(AFMT_S16_BE, 2, 0),
79	SND_FORMAT(AFMT_U16_BE, 1, 0),
80	SND_FORMAT(AFMT_U16_BE, 2, 0),
81	0
82};
83static struct pcmchan_caps ess_reccaps = {6000, 48000, ess_recfmt, 0};
84
85struct ess_info;
86
87struct ess_chinfo {
88	struct ess_info *parent;
89	struct pcm_channel *channel;
90	struct snd_dbuf *buffer;
91	int dir, hwch, stopping;
92	u_int32_t fmt, spd, blksz;
93};
94
95struct ess_info {
96    	struct resource *io, *sb, *vc, *mpu, *gp;	/* I/O address for the board */
97    	struct resource *irq;
98	void		*ih;
99    	bus_dma_tag_t parent_dmat;
100
101    	int simplex_dir, type, dmasz[2];
102	unsigned int duplex:1, newspeed:1;
103	unsigned int bufsz;
104
105    	struct ess_chinfo pch, rch;
106#if ESS18XX_MPSAFE == 1
107	struct mtx *lock;
108#endif
109};
110
111#if ESS18XX_MPSAFE == 1
112#define ess_lock(_ess) snd_mtxlock((_ess)->lock)
113#define ess_unlock(_ess) snd_mtxunlock((_ess)->lock)
114#define ess_lock_assert(_ess) snd_mtxassert((_ess)->lock)
115#else
116#define ess_lock(_ess)
117#define ess_unlock(_ess)
118#define ess_lock_assert(_ess)
119#endif
120
121static int ess_rd(struct ess_info *sc, int reg);
122static void ess_wr(struct ess_info *sc, int reg, u_int8_t val);
123static int ess_dspready(struct ess_info *sc);
124static int ess_cmd(struct ess_info *sc, u_char val);
125static int ess_cmd1(struct ess_info *sc, u_char cmd, int val);
126static int ess_get_byte(struct ess_info *sc);
127static void ess_setmixer(struct ess_info *sc, u_int port, u_int value);
128static int ess_getmixer(struct ess_info *sc, u_int port);
129static int ess_reset_dsp(struct ess_info *sc);
130
131static int ess_write(struct ess_info *sc, u_char reg, int val);
132static int ess_read(struct ess_info *sc, u_char reg);
133
134static void ess_intr(void *arg);
135static int ess_setupch(struct ess_info *sc, int ch, int dir, int spd, u_int32_t fmt, int len);
136static int ess_start(struct ess_chinfo *ch);
137static int ess_stop(struct ess_chinfo *ch);
138
139static int ess_dmasetup(struct ess_info *sc, int ch, u_int32_t base, u_int16_t cnt, int dir);
140static int ess_dmapos(struct ess_info *sc, int ch);
141static int ess_dmatrigger(struct ess_info *sc, int ch, int go);
142
143/*
144 * Common code for the midi and pcm functions
145 *
146 * ess_cmd write a single byte to the CMD port.
147 * ess_cmd1 write a CMD + 1 byte arg
148 * ess_cmd2 write a CMD + 2 byte arg
149 * ess_get_byte returns a single byte from the DSP data port
150 *
151 * ess_write is actually ess_cmd1
152 * ess_read access ext. regs via ess_cmd(0xc0, reg) followed by ess_get_byte
153 */
154
155static int
156port_rd(struct resource *port, int regno, int size)
157{
158	bus_space_tag_t st = rman_get_bustag(port);
159	bus_space_handle_t sh = rman_get_bushandle(port);
160
161	switch (size) {
162	case 1:
163		return bus_space_read_1(st, sh, regno);
164	case 2:
165		return bus_space_read_2(st, sh, regno);
166	case 4:
167		return bus_space_read_4(st, sh, regno);
168	default:
169		return 0xffffffff;
170	}
171}
172
173static void
174port_wr(struct resource *port, int regno, u_int32_t data, int size)
175{
176	bus_space_tag_t st = rman_get_bustag(port);
177	bus_space_handle_t sh = rman_get_bushandle(port);
178
179	switch (size) {
180	case 1:
181		bus_space_write_1(st, sh, regno, data);
182		break;
183	case 2:
184		bus_space_write_2(st, sh, regno, data);
185		break;
186	case 4:
187		bus_space_write_4(st, sh, regno, data);
188		break;
189	}
190}
191
192static int
193ess_rd(struct ess_info *sc, int reg)
194{
195	return port_rd(sc->sb, reg, 1);
196}
197
198static void
199ess_wr(struct ess_info *sc, int reg, u_int8_t val)
200{
201	port_wr(sc->sb, reg, val, 1);
202}
203
204static int
205ess_dspready(struct ess_info *sc)
206{
207	return ((ess_rd(sc, SBDSP_STATUS) & 0x80) == 0);
208}
209
210static int
211ess_dspwr(struct ess_info *sc, u_char val)
212{
213    	int  i;
214
215    	for (i = 0; i < 1000; i++) {
216		if (ess_dspready(sc)) {
217	    		ess_wr(sc, SBDSP_CMD, val);
218	    		return 1;
219		}
220		if (i > 10) DELAY((i > 100)? 1000 : 10);
221    	}
222    	printf("ess_dspwr(0x%02x) timed out.\n", val);
223    	return 0;
224}
225
226static int
227ess_cmd(struct ess_info *sc, u_char val)
228{
229	DEB(printf("ess_cmd: %x\n", val));
230    	return ess_dspwr(sc, val);
231}
232
233static int
234ess_cmd1(struct ess_info *sc, u_char cmd, int val)
235{
236    	DEB(printf("ess_cmd1: %x, %x\n", cmd, val));
237    	if (ess_dspwr(sc, cmd)) {
238		return ess_dspwr(sc, val & 0xff);
239    	} else return 0;
240}
241
242static void
243ess_setmixer(struct ess_info *sc, u_int port, u_int value)
244{
245	DEB(printf("ess_setmixer: reg=%x, val=%x\n", port, value);)
246    	ess_wr(sc, SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
247    	DELAY(10);
248    	ess_wr(sc, SB_MIX_DATA, (u_char) (value & 0xff));
249    	DELAY(10);
250}
251
252static int
253ess_getmixer(struct ess_info *sc, u_int port)
254{
255    	int val;
256
257    	ess_wr(sc, SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
258    	DELAY(10);
259    	val = ess_rd(sc, SB_MIX_DATA);
260    	DELAY(10);
261
262    	return val;
263}
264
265static int
266ess_get_byte(struct ess_info *sc)
267{
268    	int i;
269
270    	for (i = 1000; i > 0; i--) {
271		if (ess_rd(sc, 0xc) & 0x40)
272			return ess_rd(sc, DSP_READ);
273		else
274			DELAY(20);
275    	}
276    	return -1;
277}
278
279static int
280ess_write(struct ess_info *sc, u_char reg, int val)
281{
282    	return ess_cmd1(sc, reg, val);
283}
284
285static int
286ess_read(struct ess_info *sc, u_char reg)
287{
288    	return (ess_cmd(sc, 0xc0) && ess_cmd(sc, reg))? ess_get_byte(sc) : -1;
289}
290
291static int
292ess_reset_dsp(struct ess_info *sc)
293{
294	DEB(printf("ess_reset_dsp\n"));
295    	ess_wr(sc, SBDSP_RST, 3);
296    	DELAY(100);
297    	ess_wr(sc, SBDSP_RST, 0);
298    	if (ess_get_byte(sc) != 0xAA) {
299        	DEB(printf("ess_reset_dsp failed\n"));
300/*
301			   rman_get_start(d->io_base)));
302*/
303		return ENXIO;	/* Sorry */
304    	}
305    	ess_cmd(sc, 0xc6);
306    	return 0;
307}
308
309static void
310ess_intr(void *arg)
311{
312    	struct ess_info *sc = (struct ess_info *)arg;
313	int src, pirq = 0, rirq = 0;
314
315	ess_lock(sc);
316	src = 0;
317	if (ess_getmixer(sc, 0x7a) & 0x80)
318		src |= 2;
319	if (ess_rd(sc, 0x0c) & 0x01)
320		src |= 1;
321
322	if (src == 0) {
323		ess_unlock(sc);
324		return;
325	}
326
327	if (sc->duplex) {
328		pirq = (src & sc->pch.hwch)? 1 : 0;
329		rirq = (src & sc->rch.hwch)? 1 : 0;
330	} else {
331		if (sc->simplex_dir == PCMDIR_PLAY)
332			pirq = 1;
333		if (sc->simplex_dir == PCMDIR_REC)
334			rirq = 1;
335		if (!pirq && !rirq)
336			printf("solo: IRQ neither playback nor rec!\n");
337	}
338
339	DEB(printf("ess_intr: pirq:%d rirq:%d\n",pirq,rirq));
340
341	if (pirq) {
342		if (sc->pch.stopping) {
343			ess_dmatrigger(sc, sc->pch.hwch, 0);
344			sc->pch.stopping = 0;
345			if (sc->pch.hwch == 1)
346				ess_write(sc, 0xb8, ess_read(sc, 0xb8) & ~0x01);
347			else
348				ess_setmixer(sc, 0x78, ess_getmixer(sc, 0x78) & ~0x03);
349		}
350		ess_unlock(sc);
351		chn_intr(sc->pch.channel);
352		ess_lock(sc);
353	}
354
355	if (rirq) {
356		if (sc->rch.stopping) {
357			ess_dmatrigger(sc, sc->rch.hwch, 0);
358			sc->rch.stopping = 0;
359			/* XXX: will this stop audio2? */
360			ess_write(sc, 0xb8, ess_read(sc, 0xb8) & ~0x01);
361		}
362		ess_unlock(sc);
363		chn_intr(sc->rch.channel);
364		ess_lock(sc);
365	}
366
367	if (src & 2)
368		ess_setmixer(sc, 0x7a, ess_getmixer(sc, 0x7a) & ~0x80);
369	if (src & 1)
370    		ess_rd(sc, DSP_DATA_AVAIL);
371
372	ess_unlock(sc);
373}
374
375/* utility functions for ESS */
376static u_int8_t
377ess_calcspeed8(int *spd)
378{
379	int speed = *spd;
380	u_int32_t t;
381
382	if (speed > 22000) {
383		t = (795500 + speed / 2) / speed;
384		speed = (795500 + t / 2) / t;
385		t = (256 - t) | 0x80;
386	} else {
387		t = (397700 + speed / 2) / speed;
388		speed = (397700 + t / 2) / t;
389		t = 128 - t;
390	}
391	*spd = speed;
392	return t & 0x000000ff;
393}
394
395static u_int8_t
396ess_calcspeed9(int *spd)
397{
398	int speed, s0, s1, use0;
399	u_int8_t t0, t1;
400
401	/* rate = source / (256 - divisor) */
402	/* divisor = 256 - (source / rate) */
403	speed = *spd;
404	t0 = 128 - (793800 / speed);
405	s0 = 793800 / (128 - t0);
406
407	t1 = 128 - (768000 / speed);
408	s1 = 768000 / (128 - t1);
409	t1 |= 0x80;
410
411	use0 = (ABS(speed - s0) < ABS(speed - s1))? 1 : 0;
412
413	*spd = use0? s0 : s1;
414	return use0? t0 : t1;
415}
416
417static u_int8_t
418ess_calcfilter(int spd)
419{
420	int cutoff;
421
422	/* cutoff = 7160000 / (256 - divisor) */
423	/* divisor = 256 - (7160000 / cutoff) */
424	cutoff = (spd * 9 * 82) / 20;
425	return (256 - (7160000 / cutoff));
426}
427
428static int
429ess_setupch(struct ess_info *sc, int ch, int dir, int spd, u_int32_t fmt, int len)
430{
431	int play = (dir == PCMDIR_PLAY)? 1 : 0;
432	int b16 = (fmt & AFMT_16BIT)? 1 : 0;
433	int stereo = (AFMT_CHANNEL(fmt) > 1)? 1 : 0;
434	int unsign = (!(fmt & AFMT_SIGNED))? 1 : 0;
435	u_int8_t spdval, fmtval;
436
437	DEB(printf("ess_setupch\n"));
438	spdval = (sc->newspeed)? ess_calcspeed9(&spd) : ess_calcspeed8(&spd);
439
440	sc->simplex_dir = play ? PCMDIR_PLAY : PCMDIR_REC ;
441
442	if (ch == 1) {
443		KASSERT((dir == PCMDIR_PLAY) || (dir == PCMDIR_REC), ("ess_setupch: dir1 bad"));
444		len = -len;
445		/* transfer length low */
446		ess_write(sc, 0xa4, len & 0x00ff);
447		/* transfer length high */
448		ess_write(sc, 0xa5, (len & 0xff00) >> 8);
449		/* autoinit, dma dir */
450		ess_write(sc, 0xb8, 0x04 | (play? 0x00 : 0x0a));
451		/* mono/stereo */
452		ess_write(sc, 0xa8, (ess_read(sc, 0xa8) & ~0x03) | (stereo? 0x01 : 0x02));
453		/* demand mode, 4 bytes/xfer */
454		ess_write(sc, 0xb9, 0x02);
455		/* sample rate */
456        	ess_write(sc, 0xa1, spdval);
457		/* filter cutoff */
458		ess_write(sc, 0xa2, ess_calcfilter(spd));
459		/* setup dac/adc */
460		/*
461		if (play)
462			ess_write(sc, 0xb6, unsign? 0x80 : 0x00);
463		*/
464		/* mono, b16: signed, load signal */
465		/*
466		ess_write(sc, 0xb7, 0x51 | (unsign? 0x00 : 0x20));
467		*/
468		/* setup fifo */
469		ess_write(sc, 0xb7, 0x91 | (unsign? 0x00 : 0x20) |
470					   (b16? 0x04 : 0x00) |
471					   (stereo? 0x08 : 0x40));
472		/* irq control */
473		ess_write(sc, 0xb1, (ess_read(sc, 0xb1) & 0x0f) | 0x50);
474		/* drq control */
475		ess_write(sc, 0xb2, (ess_read(sc, 0xb2) & 0x0f) | 0x50);
476	} else if (ch == 2) {
477		KASSERT(dir == PCMDIR_PLAY, ("ess_setupch: dir2 bad"));
478		len >>= 1;
479		len = -len;
480		/* transfer length low */
481		ess_setmixer(sc, 0x74, len & 0x00ff);
482		/* transfer length high */
483		ess_setmixer(sc, 0x76, (len & 0xff00) >> 8);
484		/* autoinit, 4 bytes/req */
485		ess_setmixer(sc, 0x78, 0x10);
486		fmtval = b16 | (stereo << 1) | ((!unsign) << 2);
487		/* enable irq, set format */
488		ess_setmixer(sc, 0x7a, 0x40 | fmtval);
489		if (sc->newspeed) {
490			/* sample rate */
491			ess_setmixer(sc, 0x70, spdval);
492			/* filter cutoff */
493			ess_setmixer(sc, 0x72, ess_calcfilter(spd));
494		}
495	}
496	return 0;
497}
498static int
499ess_start(struct ess_chinfo *ch)
500{
501	struct ess_info *sc = ch->parent;
502
503	DEB(printf("ess_start\n"););
504	ess_setupch(sc, ch->hwch, ch->dir, ch->spd, ch->fmt, ch->blksz);
505	ch->stopping = 0;
506	if (ch->hwch == 1) {
507		ess_write(sc, 0xb8, ess_read(sc, 0xb8) | 0x01);
508		if (ch->dir == PCMDIR_PLAY) {
509#if 0
510			DELAY(100000); /* 100 ms */
511#endif
512			ess_cmd(sc, 0xd1);
513		}
514	} else
515		ess_setmixer(sc, 0x78, ess_getmixer(sc, 0x78) | 0x03);
516	return 0;
517}
518
519static int
520ess_stop(struct ess_chinfo *ch)
521{
522	struct ess_info *sc = ch->parent;
523
524	DEB(printf("ess_stop\n"));
525	ch->stopping = 1;
526	if (ch->hwch == 1)
527		ess_write(sc, 0xb8, ess_read(sc, 0xb8) & ~0x04);
528	else
529		ess_setmixer(sc, 0x78, ess_getmixer(sc, 0x78) & ~0x10);
530	DEB(printf("done with stop\n"));
531	return 0;
532}
533
534/* -------------------------------------------------------------------- */
535/* channel interface for ESS18xx */
536static void *
537esschan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
538{
539	struct ess_info *sc = devinfo;
540	struct ess_chinfo *ch = (dir == PCMDIR_PLAY)? &sc->pch : &sc->rch;
541
542	DEB(printf("esschan_init\n"));
543	ch->parent = sc;
544	ch->channel = c;
545	ch->buffer = b;
546	ch->dir = dir;
547	if (sndbuf_alloc(ch->buffer, sc->parent_dmat, 0, sc->bufsz) != 0)
548		return NULL;
549	ch->hwch = 1;
550	if ((dir == PCMDIR_PLAY) && (sc->duplex))
551		ch->hwch = 2;
552	return ch;
553}
554
555static int
556esschan_setformat(kobj_t obj, void *data, u_int32_t format)
557{
558	struct ess_chinfo *ch = data;
559
560	ch->fmt = format;
561	return 0;
562}
563
564static u_int32_t
565esschan_setspeed(kobj_t obj, void *data, u_int32_t speed)
566{
567	struct ess_chinfo *ch = data;
568	struct ess_info *sc = ch->parent;
569
570	ch->spd = speed;
571	if (sc->newspeed)
572		ess_calcspeed9(&ch->spd);
573	else
574		ess_calcspeed8(&ch->spd);
575	return ch->spd;
576}
577
578static u_int32_t
579esschan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize)
580{
581	struct ess_chinfo *ch = data;
582
583	ch->blksz = blocksize;
584	return ch->blksz;
585}
586
587static int
588esschan_trigger(kobj_t obj, void *data, int go)
589{
590	struct ess_chinfo *ch = data;
591	struct ess_info *sc = ch->parent;
592
593	if (!PCMTRIG_COMMON(go))
594		return 0;
595
596	DEB(printf("esschan_trigger: %d\n",go));
597
598	ess_lock(sc);
599	switch (go) {
600	case PCMTRIG_START:
601		ess_dmasetup(sc, ch->hwch, sndbuf_getbufaddr(ch->buffer), sndbuf_getsize(ch->buffer), ch->dir);
602		ess_dmatrigger(sc, ch->hwch, 1);
603		ess_start(ch);
604		break;
605
606	case PCMTRIG_STOP:
607	case PCMTRIG_ABORT:
608	default:
609		ess_stop(ch);
610		break;
611	}
612	ess_unlock(sc);
613	return 0;
614}
615
616static u_int32_t
617esschan_getptr(kobj_t obj, void *data)
618{
619	struct ess_chinfo *ch = data;
620	struct ess_info *sc = ch->parent;
621	u_int32_t ret;
622
623	ess_lock(sc);
624	ret = ess_dmapos(sc, ch->hwch);
625	ess_unlock(sc);
626	return ret;
627}
628
629static struct pcmchan_caps *
630esschan_getcaps(kobj_t obj, void *data)
631{
632	struct ess_chinfo *ch = data;
633
634	return (ch->dir == PCMDIR_PLAY)? &ess_playcaps : &ess_reccaps;
635}
636
637static kobj_method_t esschan_methods[] = {
638    	KOBJMETHOD(channel_init,		esschan_init),
639    	KOBJMETHOD(channel_setformat,		esschan_setformat),
640    	KOBJMETHOD(channel_setspeed,		esschan_setspeed),
641    	KOBJMETHOD(channel_setblocksize,	esschan_setblocksize),
642    	KOBJMETHOD(channel_trigger,		esschan_trigger),
643    	KOBJMETHOD(channel_getptr,		esschan_getptr),
644    	KOBJMETHOD(channel_getcaps,		esschan_getcaps),
645	KOBJMETHOD_END
646};
647CHANNEL_DECLARE(esschan);
648
649/************************************************************/
650
651static int
652essmix_init(struct snd_mixer *m)
653{
654    	struct ess_info *sc = mix_getdevinfo(m);
655
656	mix_setrecdevs(m, SOUND_MASK_CD | SOUND_MASK_MIC | SOUND_MASK_LINE |
657			  SOUND_MASK_IMIX);
658
659	mix_setdevs(m, SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_LINE |
660		       SOUND_MASK_MIC | SOUND_MASK_CD | SOUND_MASK_VOLUME |
661		       SOUND_MASK_LINE1);
662
663	ess_setmixer(sc, 0, 0); /* reset */
664
665	return 0;
666}
667
668static int
669essmix_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
670{
671    	struct ess_info *sc = mix_getdevinfo(m);
672    	int preg = 0, rreg = 0, l, r;
673
674	l = (left * 15) / 100;
675	r = (right * 15) / 100;
676	switch (dev) {
677	case SOUND_MIXER_SYNTH:
678		preg = 0x36;
679		rreg = 0x6b;
680		break;
681
682	case SOUND_MIXER_PCM:
683		preg = 0x14;
684		rreg = 0x7c;
685		break;
686
687	case SOUND_MIXER_LINE:
688		preg = 0x3e;
689		rreg = 0x6e;
690		break;
691
692	case SOUND_MIXER_MIC:
693		preg = 0x1a;
694		rreg = 0x68;
695		break;
696
697	case SOUND_MIXER_LINE1:
698		preg = 0x3a;
699		rreg = 0x6c;
700		break;
701
702	case SOUND_MIXER_CD:
703		preg = 0x38;
704		rreg = 0x6a;
705		break;
706
707	case SOUND_MIXER_VOLUME:
708		l = left? (left * 63) / 100 : 64;
709		r = right? (right * 63) / 100 : 64;
710		ess_setmixer(sc, 0x60, l);
711		ess_setmixer(sc, 0x62, r);
712		left = (l == 64)? 0 : (l * 100) / 63;
713		right = (r == 64)? 0 : (r * 100) / 63;
714    		return left | (right << 8);
715	}
716
717	if (preg)
718		ess_setmixer(sc, preg, (l << 4) | r);
719	if (rreg)
720		ess_setmixer(sc, rreg, (l << 4) | r);
721
722	left = (l * 100) / 15;
723	right = (r * 100) / 15;
724
725    	return left | (right << 8);
726}
727
728static u_int32_t
729essmix_setrecsrc(struct snd_mixer *m, u_int32_t src)
730{
731    	struct ess_info *sc = mix_getdevinfo(m);
732    	u_char recdev;
733
734    	switch (src) {
735	case SOUND_MASK_CD:
736		recdev = 0x02;
737		break;
738
739	case SOUND_MASK_LINE:
740		recdev = 0x06;
741		break;
742
743	case SOUND_MASK_IMIX:
744		recdev = 0x05;
745		break;
746
747	case SOUND_MASK_MIC:
748	default:
749		recdev = 0x00;
750		src = SOUND_MASK_MIC;
751		break;
752	}
753
754	ess_setmixer(sc, 0x1c, recdev);
755
756	return src;
757}
758
759static kobj_method_t solomixer_methods[] = {
760    	KOBJMETHOD(mixer_init,		essmix_init),
761    	KOBJMETHOD(mixer_set,		essmix_set),
762    	KOBJMETHOD(mixer_setrecsrc,	essmix_setrecsrc),
763	KOBJMETHOD_END
764};
765MIXER_DECLARE(solomixer);
766
767/************************************************************/
768
769static int
770ess_dmasetup(struct ess_info *sc, int ch, u_int32_t base, u_int16_t cnt, int dir)
771{
772	KASSERT(ch == 1 || ch == 2, ("bad ch"));
773	sc->dmasz[ch - 1] = cnt;
774	if (ch == 1) {
775		port_wr(sc->vc, 0x8, 0xc4, 1); /* command */
776		port_wr(sc->vc, 0xd, 0xff, 1); /* reset */
777		port_wr(sc->vc, 0xf, 0x01, 1); /* mask */
778		port_wr(sc->vc, 0xb, dir == PCMDIR_PLAY? 0x58 : 0x54, 1); /* mode */
779		port_wr(sc->vc, 0x0, base, 4);
780		port_wr(sc->vc, 0x4, cnt - 1, 2);
781
782	} else if (ch == 2) {
783		port_wr(sc->io, 0x6, 0x08, 1); /* autoinit */
784		port_wr(sc->io, 0x0, base, 4);
785		port_wr(sc->io, 0x4, cnt, 2);
786	}
787	return 0;
788}
789
790static int
791ess_dmapos(struct ess_info *sc, int ch)
792{
793	int p = 0, i = 0, j = 0;
794
795	KASSERT(ch == 1 || ch == 2, ("bad ch"));
796	if (ch == 1) {
797/*
798 * During recording, this register is known to give back
799 * garbage if it's not quiescent while being read. That's
800 * why we spl, stop the DMA, and try over and over until
801 * adjacent reads are "close", in the right order and not
802 * bigger than is otherwise possible.
803 */
804		ess_dmatrigger(sc, ch, 0);
805		DELAY(20);
806		do {
807			DELAY(10);
808			if (j > 1)
809				printf("DMA count reg bogus: %04x & %04x\n",
810					i, p);
811			i = port_rd(sc->vc, 0x4, 2) + 1;
812			p = port_rd(sc->vc, 0x4, 2) + 1;
813		} while ((p > sc->dmasz[ch - 1] || i < p || (p - i) > 0x8) && j++ < 1000);
814		ess_dmatrigger(sc, ch, 1);
815	}
816	else if (ch == 2)
817		p = port_rd(sc->io, 0x4, 2);
818	return sc->dmasz[ch - 1] - p;
819}
820
821static int
822ess_dmatrigger(struct ess_info *sc, int ch, int go)
823{
824	KASSERT(ch == 1 || ch == 2, ("bad ch"));
825	if (ch == 1)
826		port_wr(sc->vc, 0xf, go? 0x00 : 0x01, 1); /* mask */
827	else if (ch == 2)
828		port_wr(sc->io, 0x6, 0x08 | (go? 0x02 : 0x00), 1); /* autoinit */
829	return 0;
830}
831
832static void
833ess_release_resources(struct ess_info *sc, device_t dev)
834{
835    	if (sc->irq) {
836		if (sc->ih)
837			bus_teardown_intr(dev, sc->irq, sc->ih);
838		bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq);
839		sc->irq = NULL;
840    	}
841    	if (sc->io) {
842		bus_release_resource(dev, SYS_RES_IOPORT, PCIR_BAR(0), sc->io);
843		sc->io = NULL;
844    	}
845
846    	if (sc->sb) {
847		bus_release_resource(dev, SYS_RES_IOPORT, PCIR_BAR(1), sc->sb);
848		sc->sb = NULL;
849    	}
850
851    	if (sc->vc) {
852		bus_release_resource(dev, SYS_RES_IOPORT, PCIR_BAR(2), sc->vc);
853		sc->vc = NULL;
854    	}
855
856    	if (sc->mpu) {
857		bus_release_resource(dev, SYS_RES_IOPORT, PCIR_BAR(3), sc->mpu);
858		sc->mpu = NULL;
859    	}
860
861    	if (sc->gp) {
862		bus_release_resource(dev, SYS_RES_IOPORT, PCIR_BAR(4), sc->gp);
863		sc->gp = NULL;
864    	}
865
866	if (sc->parent_dmat) {
867		bus_dma_tag_destroy(sc->parent_dmat);
868		sc->parent_dmat = 0;
869    	}
870
871#if ESS18XX_MPSAFE == 1
872	if (sc->lock) {
873		snd_mtxfree(sc->lock);
874		sc->lock = NULL;
875	}
876#endif
877
878    	free(sc, M_DEVBUF);
879}
880
881static int
882ess_alloc_resources(struct ess_info *sc, device_t dev)
883{
884	int rid;
885
886	rid = PCIR_BAR(0);
887    	sc->io = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
888
889	rid = PCIR_BAR(1);
890    	sc->sb = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
891
892	rid = PCIR_BAR(2);
893    	sc->vc = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
894
895	rid = PCIR_BAR(3);
896    	sc->mpu = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
897
898	rid = PCIR_BAR(4);
899    	sc->gp = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
900
901	rid = 0;
902	sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
903		RF_ACTIVE | RF_SHAREABLE);
904
905#if ESS18XX_MPSAFE == 1
906	sc->lock = snd_mtxcreate(device_get_nameunit(dev), "snd_solo softc");
907
908	return (sc->irq && sc->io && sc->sb && sc->vc &&
909				sc->mpu && sc->gp && sc->lock)? 0 : ENXIO;
910#else
911	return (sc->irq && sc->io && sc->sb && sc->vc && sc->mpu && sc->gp)? 0 : ENXIO;
912#endif
913}
914
915static int
916ess_probe(device_t dev)
917{
918	char *s = NULL;
919	u_int32_t subdev;
920
921	subdev = (pci_get_subdevice(dev) << 16) | pci_get_subvendor(dev);
922	switch (pci_get_devid(dev)) {
923	case 0x1969125d:
924		if (subdev == 0x8888125d)
925			s = "ESS Solo-1E";
926		else if (subdev == 0x1818125d)
927			s = "ESS Solo-1";
928		else
929			s = "ESS Solo-1 (unknown vendor)";
930		break;
931	}
932
933	if (s)
934		device_set_desc(dev, s);
935	return s ? BUS_PROBE_DEFAULT : ENXIO;
936}
937
938#define ESS_PCI_LEGACYCONTROL       0x40
939#define ESS_PCI_CONFIG              0x50
940#define ESS_PCI_DDMACONTROL      	0x60
941
942static int
943ess_suspend(device_t dev)
944{
945  return 0;
946}
947
948static int
949ess_resume(device_t dev)
950{
951	uint16_t ddma;
952	struct ess_info *sc = pcm_getdevinfo(dev);
953
954	ess_lock(sc);
955	ddma = rman_get_start(sc->vc) | 1;
956	pci_write_config(dev, ESS_PCI_LEGACYCONTROL, 0x805f, 2);
957	pci_write_config(dev, ESS_PCI_DDMACONTROL, ddma, 2);
958	pci_write_config(dev, ESS_PCI_CONFIG, 0, 2);
959
960    	if (ess_reset_dsp(sc)) {
961		ess_unlock(sc);
962		goto no;
963	}
964	ess_unlock(sc);
965    	if (mixer_reinit(dev))
966		goto no;
967	ess_lock(sc);
968	if (sc->newspeed)
969		ess_setmixer(sc, 0x71, 0x2a);
970
971	port_wr(sc->io, 0x7, 0xb0, 1); /* enable irqs */
972	ess_unlock(sc);
973
974	return 0;
975 no:
976	return EIO;
977}
978
979static int
980ess_attach(device_t dev)
981{
982    	struct ess_info *sc;
983    	char status[SND_STATUSLEN];
984	u_int16_t ddma;
985
986	sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO);
987	pci_enable_busmaster(dev);
988
989    	if (ess_alloc_resources(sc, dev))
990		goto no;
991
992	sc->bufsz = pcm_getbuffersize(dev, 4096, SOLO_DEFAULT_BUFSZ, 65536);
993
994	ddma = rman_get_start(sc->vc) | 1;
995	pci_write_config(dev, ESS_PCI_LEGACYCONTROL, 0x805f, 2);
996	pci_write_config(dev, ESS_PCI_DDMACONTROL, ddma, 2);
997	pci_write_config(dev, ESS_PCI_CONFIG, 0, 2);
998
999	port_wr(sc->io, 0x7, 0xb0, 1); /* enable irqs */
1000#ifdef ESS18XX_DUPLEX
1001	sc->duplex = 1;
1002#else
1003	sc->duplex = 0;
1004#endif
1005
1006#ifdef ESS18XX_NEWSPEED
1007	sc->newspeed = 1;
1008#else
1009	sc->newspeed = 0;
1010#endif
1011	if (snd_setup_intr(dev, sc->irq,
1012#if ESS18XX_MPSAFE == 1
1013			INTR_MPSAFE
1014#else
1015			0
1016#endif
1017			, ess_intr, sc, &sc->ih)) {
1018		device_printf(dev, "unable to map interrupt\n");
1019		goto no;
1020	}
1021
1022    	if (!sc->duplex)
1023		pcm_setflags(dev, pcm_getflags(dev) | SD_F_SIMPLEX);
1024
1025#if 0
1026    	if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/65536, /*boundary*/0,
1027#endif
1028    	if (bus_dma_tag_create(/*parent*/bus_get_dma_tag(dev), /*alignment*/2, /*boundary*/0,
1029			/*lowaddr*/BUS_SPACE_MAXADDR_24BIT,
1030			/*highaddr*/BUS_SPACE_MAXADDR,
1031			/*filter*/NULL, /*filterarg*/NULL,
1032			/*maxsize*/sc->bufsz, /*nsegments*/1,
1033			/*maxsegz*/0x3ffff,
1034			/*flags*/0,
1035#if ESS18XX_MPSAFE == 1
1036			/*lockfunc*/NULL, /*lockarg*/NULL,
1037#else
1038			/*lockfunc*/busdma_lock_mutex, /*lockarg*/&Giant,
1039#endif
1040			&sc->parent_dmat) != 0) {
1041		device_printf(dev, "unable to create dma tag\n");
1042		goto no;
1043    	}
1044
1045    	if (ess_reset_dsp(sc))
1046		goto no;
1047
1048	if (sc->newspeed)
1049		ess_setmixer(sc, 0x71, 0x2a);
1050
1051    	if (mixer_init(dev, &solomixer_class, sc))
1052		goto no;
1053
1054    	snprintf(status, SND_STATUSLEN, "at io 0x%jx,0x%jx,0x%jx irq %jd %s",
1055    	     	rman_get_start(sc->io), rman_get_start(sc->sb), rman_get_start(sc->vc),
1056		rman_get_start(sc->irq),PCM_KLDSTRING(snd_solo));
1057
1058    	if (pcm_register(dev, sc, 1, 1))
1059		goto no;
1060      	pcm_addchan(dev, PCMDIR_REC, &esschan_class, sc);
1061	pcm_addchan(dev, PCMDIR_PLAY, &esschan_class, sc);
1062	pcm_setstatus(dev, status);
1063
1064    	return 0;
1065
1066no:
1067    	ess_release_resources(sc, dev);
1068    	return ENXIO;
1069}
1070
1071static int
1072ess_detach(device_t dev)
1073{
1074	int r;
1075	struct ess_info *sc;
1076
1077	r = pcm_unregister(dev);
1078	if (r)
1079		return r;
1080
1081	sc = pcm_getdevinfo(dev);
1082    	ess_release_resources(sc, dev);
1083	return 0;
1084}
1085
1086static device_method_t ess_methods[] = {
1087	/* Device interface */
1088	DEVMETHOD(device_probe,		ess_probe),
1089	DEVMETHOD(device_attach,	ess_attach),
1090	DEVMETHOD(device_detach,	ess_detach),
1091	DEVMETHOD(device_resume,	ess_resume),
1092	DEVMETHOD(device_suspend,	ess_suspend),
1093	{ 0, 0 }
1094};
1095
1096static driver_t ess_driver = {
1097	"pcm",
1098	ess_methods,
1099	PCM_SOFTC_SIZE,
1100};
1101
1102DRIVER_MODULE(snd_solo, pci, ess_driver, pcm_devclass, 0, 0);
1103MODULE_DEPEND(snd_solo, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
1104MODULE_VERSION(snd_solo, 1);
1105