esa.c revision 1.46
1/* $NetBSD: esa.c,v 1.46 2008/03/21 07:47:43 dyoung Exp $ */
2
3/*
4 * Copyright (c) 2001, 2002, 2006 Jared D. McNeill <jmcneill@invisible.ca>
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. The name of the author may not be used to endorse or promote products
13 *    derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * 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/*
29 * ESS Allegro-1 / Maestro3 Audio Driver
30 *
31 * Based on the FreeBSD maestro3 driver and the NetBSD eap driver.
32 * Original driver by Don Kim.
33 *
34 * The list management code could possibly be written better, but what
35 * we have right now does the job nicely. Thanks to Zach Brown <zab@zabbo.net>
36 * and Andrew MacDonald <amac@epsilon.yi.org> for helping me debug the
37 * problems with the original list management code present in the Linux
38 * driver.
39 */
40
41#include <sys/cdefs.h>
42__KERNEL_RCSID(0, "$NetBSD: esa.c,v 1.46 2008/03/21 07:47:43 dyoung Exp $");
43
44#include <sys/types.h>
45#include <sys/errno.h>
46#include <sys/null.h>
47#include <sys/param.h>
48#include <sys/systm.h>
49#include <sys/malloc.h>
50#include <sys/device.h>
51#include <sys/conf.h>
52#include <sys/exec.h>
53#include <sys/select.h>
54#include <sys/audioio.h>
55
56#include <sys/bus.h>
57#include <sys/intr.h>
58
59#include <dev/pci/pcidevs.h>
60#include <dev/pci/pcivar.h>
61
62#include <dev/audio_if.h>
63#include <dev/mulaw.h>
64#include <dev/auconv.h>
65#include <dev/ic/ac97var.h>
66#include <dev/ic/ac97reg.h>
67
68#include <dev/pci/esareg.h>
69#include <dev/pci/esadsp.h>
70#include <dev/pci/esavar.h>
71
72#define PCI_CBIO	0x10
73
74#define ESA_DAC_DATA	0x1100
75
76enum {
77	ESS_ALLEGRO1,
78	ESS_MAESTRO3
79};
80
81static const struct esa_card_type {
82	uint16_t pci_vendor_id;
83	uint16_t pci_product_id;
84	int type;
85	int delay1, delay2;
86} esa_card_types[] = {
87	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_ALLEGRO1,
88	  ESS_ALLEGRO1, 50, 800 },
89	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_MAESTRO3,
90	  ESS_MAESTRO3, 20, 500 },
91	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_MAESTRO3_2,
92	  ESS_MAESTRO3, 20, 500 },
93	{ 0, 0, 0, 0, 0 }
94};
95
96static struct audio_device esa_device = {
97	"ESS Allegro",
98	"",
99	"esa"
100};
101
102static int		esa_match(device_t, struct cfdata *, void *);
103static void		esa_attach(device_t, device_t, void *);
104static int		esa_detach(device_t, int);
105static void		esa_childdet(device_t, device_t);
106
107/* audio(9) functions */
108static int		esa_query_encoding(void *, struct audio_encoding *);
109static int		esa_set_params(void *, int, int, audio_params_t *,
110				       audio_params_t *, stream_filter_list_t *,
111				       stream_filter_list_t *);
112static int		esa_round_blocksize(void *, int, int,
113					    const audio_params_t *);
114static int		esa_commit_settings(void *);
115static int		esa_halt_output(void *);
116static int		esa_halt_input(void *);
117static int		esa_set_port(void *, mixer_ctrl_t *);
118static int		esa_get_port(void *, mixer_ctrl_t *);
119static int		esa_query_devinfo(void *, mixer_devinfo_t *);
120static void *		esa_malloc(void *, int, size_t, struct malloc_type *,
121				   int);
122static void		esa_free(void *, void *, struct malloc_type *);
123static int		esa_getdev(void *, struct audio_device *);
124static size_t		esa_round_buffersize(void *, int, size_t);
125static int		esa_get_props(void *);
126static int		esa_trigger_output(void *, void *, void *, int,
127					   void (*)(void *), void *,
128					   const audio_params_t *);
129static int		esa_trigger_input(void *, void *, void *, int,
130					  void (*)(void *), void *,
131					  const audio_params_t *);
132
133static int		esa_intr(void *);
134static int		esa_allocmem(struct esa_softc *, size_t, size_t,
135				     struct esa_dma *);
136static int		esa_freemem(struct esa_softc *, struct esa_dma *);
137static paddr_t		esa_mappage(void *, void *, off_t, int);
138
139/* Supporting subroutines */
140static uint16_t		esa_read_assp(struct esa_softc *, uint16_t, uint16_t);
141static void		esa_write_assp(struct esa_softc *, uint16_t, uint16_t,
142				       uint16_t);
143static int		esa_init_codec(struct esa_softc *);
144static int		esa_attach_codec(void *, struct ac97_codec_if *);
145static int		esa_read_codec(void *, uint8_t, uint16_t *);
146static int		esa_write_codec(void *, uint8_t, uint16_t);
147static int		esa_reset_codec(void *);
148static enum ac97_host_flags	esa_flags_codec(void *);
149static int		esa_wait(struct esa_softc *);
150static int		esa_init(struct esa_softc *);
151static void		esa_config(struct esa_softc *);
152static uint8_t		esa_assp_halt(struct esa_softc *);
153static void		esa_codec_reset(struct esa_softc *);
154static int		esa_amp_enable(struct esa_softc *);
155static void		esa_enable_interrupts(struct esa_softc *);
156static uint32_t		esa_get_pointer(struct esa_softc *,
157					struct esa_channel *);
158
159/* list management */
160static int		esa_add_list(struct esa_voice *, struct esa_list *,
161				     uint16_t, int);
162static void		esa_remove_list(struct esa_voice *, struct esa_list *,
163					int);
164
165/* power management */
166static bool		esa_suspend(device_t PMF_FN_PROTO);
167static bool		esa_resume(device_t PMF_FN_PROTO);
168
169
170#define ESA_NENCODINGS 8
171static audio_encoding_t esa_encoding[ESA_NENCODINGS] = {
172	{ 0, AudioEulinear, AUDIO_ENCODING_ULINEAR, 8, 0 },
173	{ 1, AudioEmulaw, AUDIO_ENCODING_ULAW, 8,
174		AUDIO_ENCODINGFLAG_EMULATED },
175	{ 2, AudioEalaw, AUDIO_ENCODING_ALAW, 8, AUDIO_ENCODINGFLAG_EMULATED },
176	{ 3, AudioEslinear, AUDIO_ENCODING_SLINEAR, 8,
177		AUDIO_ENCODINGFLAG_EMULATED }, /* XXX: Are you sure? */
178	{ 4, AudioEslinear_le, AUDIO_ENCODING_SLINEAR_LE, 16, 0 },
179	{ 5, AudioEulinear_le, AUDIO_ENCODING_ULINEAR_LE, 16,
180		AUDIO_ENCODINGFLAG_EMULATED },
181	{ 6, AudioEslinear_be, AUDIO_ENCODING_SLINEAR_BE, 16,
182		AUDIO_ENCODINGFLAG_EMULATED },
183	{ 7, AudioEulinear_be, AUDIO_ENCODING_ULINEAR_BE, 16,
184		AUDIO_ENCODINGFLAG_EMULATED }
185};
186
187#define ESA_NFORMATS	4
188static const struct audio_format esa_formats[ESA_NFORMATS] = {
189	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
190	 2, AUFMT_STEREO, 0, {ESA_MINRATE, ESA_MAXRATE}},
191	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
192	 1, AUFMT_MONAURAL, 0, {ESA_MINRATE, ESA_MAXRATE}},
193	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 8, 8,
194	 2, AUFMT_STEREO, 0, {ESA_MINRATE, ESA_MAXRATE}},
195	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 8, 8,
196	 1, AUFMT_MONAURAL, 0, {ESA_MINRATE, ESA_MAXRATE}},
197};
198
199static const struct audio_hw_if esa_hw_if = {
200	NULL,			/* open */
201	NULL,			/* close */
202	NULL,			/* drain */
203	esa_query_encoding,
204	esa_set_params,
205	esa_round_blocksize,
206	esa_commit_settings,
207	NULL,			/* init_output */
208	NULL,			/* init_input */
209	NULL,			/* start_output */
210	NULL,			/* start_input */
211	esa_halt_output,
212	esa_halt_input,
213	NULL,			/* speaker_ctl */
214	esa_getdev,
215	NULL,			/* getfd */
216	esa_set_port,
217	esa_get_port,
218	esa_query_devinfo,
219	esa_malloc,
220	esa_free,
221	esa_round_buffersize,
222	esa_mappage,
223	esa_get_props,
224	esa_trigger_output,
225	esa_trigger_input,
226	NULL,	/* dev_ioctl */
227	NULL,	/* powerstate */
228};
229
230CFATTACH_DECL2(esa, sizeof(struct esa_softc), esa_match, esa_attach,
231    esa_detach, NULL, NULL, esa_childdet);
232
233/*
234 * audio(9) functions
235 */
236
237static int
238esa_query_encoding(void *hdl, struct audio_encoding *ae)
239{
240
241	if (ae->index < 0 || ae->index >= ESA_NENCODINGS)
242		return EINVAL;
243	*ae = esa_encoding[ae->index];
244
245	return 0;
246}
247
248static int
249esa_set_params(void *hdl, int setmode, int usemode,
250    audio_params_t *play, audio_params_t *rec, stream_filter_list_t *pfil,
251    stream_filter_list_t *rfil)
252{
253	struct esa_voice *vc;
254	struct esa_channel *ch;
255	struct audio_params *p;
256	stream_filter_list_t *fil;
257	int mode, i;
258
259	vc = hdl;
260	for (mode = AUMODE_RECORD; mode != -1;
261	     mode = (mode == AUMODE_RECORD) ? AUMODE_PLAY : -1) {
262		if ((setmode & mode) == 0)
263			continue;
264
265		switch (mode) {
266		case AUMODE_PLAY:
267			p = play;
268			ch = &vc->play;
269			fil = pfil;
270			break;
271		case AUMODE_RECORD:
272			p = rec;
273			ch = &vc->rec;
274			fil = rfil;
275			break;
276		default:
277			return EINVAL;
278		}
279
280		if (p->sample_rate < ESA_MINRATE ||
281		    p->sample_rate > ESA_MAXRATE ||
282		    (p->precision != 8 && p->precision != 16) ||
283		    (p->channels < 1 || p->channels > 2))
284			return EINVAL;
285
286		i = auconv_set_converter(esa_formats, ESA_NFORMATS,
287					 mode, p, FALSE, fil);
288		if (i < 0)
289			return EINVAL;
290		if (fil->req_size > 0)
291			p = &fil->filters[0].param;
292		ch->mode = *p;
293	}
294
295	return 0;
296}
297
298static int
299esa_commit_settings(void *hdl)
300{
301	struct esa_voice *vc;
302	struct esa_softc *sc;
303	const audio_params_t *p;
304	const audio_params_t *r;
305	uint32_t data;
306	uint32_t freq;
307	int data_bytes;
308
309	vc = hdl;
310	sc = (struct esa_softc *)vc->parent;
311	p = &vc->play.mode;
312	r = &vc->rec.mode;
313	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
314	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
315	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255)
316	    &~ 255;
317	/* playback */
318	vc->play.data_offset = ESA_DAC_DATA + (data_bytes * vc->index);
319	if (p->channels == 1)
320		data = 1;
321	else
322		data = 0;
323	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
324		       vc->play.data_offset + ESA_SRC3_MODE_OFFSET,
325		       data);
326	if (p->precision  == 8)
327		data = 1;
328	else
329		data = 0;
330	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
331		       vc->play.data_offset + ESA_SRC3_WORD_LENGTH_OFFSET,
332		       data);
333	if ((freq = ((p->sample_rate << 15) + 24000) / 48000) != 0) {
334		freq--;
335	}
336	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
337		       vc->play.data_offset + ESA_CDATA_FREQUENCY, freq);
338
339	/* recording */
340	vc->rec.data_offset = ESA_DAC_DATA + (data_bytes * vc->index) +
341			      (data_bytes / 2);
342	if (r->channels == 1)
343		data = 1;
344	else
345		data = 0;
346	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
347		       vc->rec.data_offset + ESA_SRC3_MODE_OFFSET,
348		       data);
349	if (r->precision == 8)
350		data = 1;
351	else
352		data = 0;
353	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
354		       vc->rec.data_offset + ESA_SRC3_WORD_LENGTH_OFFSET,
355		       data);
356	if ((freq = ((r->sample_rate << 15) + 24000) / 48000) != 0) {
357		freq--;
358	}
359	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
360		       vc->rec.data_offset + ESA_CDATA_FREQUENCY, freq);
361
362	return 0;
363};
364
365static int
366esa_round_blocksize(void *hdl, int bs, int mode,
367    const audio_params_t *param)
368{
369
370	return bs & ~0x20;	/* Be conservative; align to 32 bytes */
371}
372
373static int
374esa_halt_output(void *hdl)
375{
376	struct esa_voice *vc;
377	struct esa_softc *sc;
378	bus_space_tag_t iot;
379	bus_space_handle_t ioh;
380	uint16_t data;
381
382	vc = hdl;
383	sc = (struct esa_softc *)vc->parent;
384	iot = sc->sc_iot;
385	ioh = sc->sc_ioh;
386	if (vc->play.active == 0)
387		return 0;
388
389	vc->play.active = 0;
390
391	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
392		       ESA_CDATA_INSTANCE_READY + vc->play.data_offset, 0);
393
394	sc->sc_ntimers--;
395	if (sc->sc_ntimers == 0) {
396		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
397			       ESA_KDATA_TIMER_COUNT_RELOAD, 0);
398		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
399			       ESA_KDATA_TIMER_COUNT_CURRENT, 0);
400		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
401		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
402		    data & ~ESA_CLKRUN_GEN_ENABLE);
403	}
404
405	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
406		       ESA_KDATA_MIXER_TASK_NUMBER,
407		       sc->mixer_list.indexmap[vc->index]);
408	/* remove ourselves from the packed lists */
409	esa_remove_list(vc, &sc->mixer_list, vc->index);
410	esa_remove_list(vc, &sc->dma_list, vc->index);
411	esa_remove_list(vc, &sc->msrc_list, vc->index);
412
413	return 0;
414}
415
416static int
417esa_halt_input(void *hdl)
418{
419	struct esa_voice *vc;
420	struct esa_softc *sc;
421	bus_space_tag_t iot;
422	bus_space_handle_t ioh;
423	uint32_t data;
424
425	vc = hdl;
426	sc = (struct esa_softc *)vc->parent;
427	iot = sc->sc_iot;
428	ioh = sc->sc_ioh;
429	if (vc->rec.active == 0)
430		return 0;
431
432	vc->rec.active = 0;
433
434	sc->sc_ntimers--;
435	if (sc->sc_ntimers == 0) {
436		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
437			       ESA_KDATA_TIMER_COUNT_RELOAD, 0);
438		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
439			       ESA_KDATA_TIMER_COUNT_CURRENT, 0);
440		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
441		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
442				  data & ~ESA_CLKRUN_GEN_ENABLE);
443	}
444
445	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, vc->rec.data_offset +
446		       ESA_CDATA_INSTANCE_READY, 0);
447	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_ADC1_REQUEST,
448		       0);
449
450	/* remove ourselves from the packed lists */
451	esa_remove_list(vc, &sc->adc1_list, vc->index + ESA_NUM_VOICES);
452	esa_remove_list(vc, &sc->dma_list, vc->index + ESA_NUM_VOICES);
453	esa_remove_list(vc, &sc->msrc_list, vc->index + ESA_NUM_VOICES);
454
455	return 0;
456}
457
458static void *
459esa_malloc(void *hdl, int direction, size_t size,
460    struct malloc_type *type, int flags)
461{
462	struct esa_voice *vc;
463	struct esa_softc *sc;
464	struct esa_dma *p;
465	int error;
466
467	p = malloc(sizeof(*p), type, flags);
468	if (p == NULL)
469		return NULL;
470	vc = hdl;
471	sc = (struct esa_softc *)vc->parent;
472	error = esa_allocmem(sc, size, 16, p);
473	if (error) {
474		free(p, type);
475		printf("%s: esa_malloc: not enough memory\n",
476		    sc->sc_dev.dv_xname);
477		return 0;
478	}
479	p->next = vc->dma;
480	vc->dma = p;
481
482	return KERNADDR(p);
483}
484
485static void
486esa_free(void *hdl, void *addr, struct malloc_type *type)
487{
488	struct esa_voice *vc;
489	struct esa_softc *sc;
490	struct esa_dma *p;
491	struct esa_dma **pp;
492
493	vc = hdl;
494	sc = (struct esa_softc *)vc->parent;
495	for (pp = &vc->dma; (p = *pp) != NULL; pp = &p->next)
496		if (KERNADDR(p) == addr) {
497			esa_freemem(sc, p);
498			*pp = p->next;
499			free(p, type);
500			return;
501		}
502}
503
504static int
505esa_getdev(void *hdl, struct audio_device *ret)
506{
507
508	*ret = esa_device;
509	return 0;
510}
511
512static int
513esa_set_port(void *hdl, mixer_ctrl_t *mc)
514{
515	struct esa_voice *vc;
516	struct esa_softc *sc;
517
518	vc = hdl;
519	sc = (struct esa_softc *)vc->parent;
520	return sc->codec_if->vtbl->mixer_set_port(sc->codec_if, mc);
521}
522
523static int
524esa_get_port(void *hdl, mixer_ctrl_t *mc)
525{
526	struct esa_voice *vc;
527	struct esa_softc *sc;
528
529	vc = hdl;
530	sc = (struct esa_softc *)vc->parent;
531	return sc->codec_if->vtbl->mixer_get_port(sc->codec_if, mc);
532}
533
534static int
535esa_query_devinfo(void *hdl, mixer_devinfo_t *di)
536{
537	struct esa_voice *vc;
538	struct esa_softc *sc;
539
540	vc = hdl;
541	sc = (struct esa_softc *)vc->parent;
542	return sc->codec_if->vtbl->query_devinfo(sc->codec_if, di);
543}
544
545static size_t
546esa_round_buffersize(void *hdl, int direction, size_t bufsize)
547{
548
549	return bufsize;
550}
551
552static int
553esa_get_props(void *hdl)
554{
555
556	return AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
557}
558
559static int
560esa_trigger_output(void *hdl, void *start, void *end, int blksize,
561    void (*intr)(void *), void *intrarg, const audio_params_t *param)
562{
563	struct esa_voice *vc;
564	struct esa_softc *sc;
565	struct esa_dma *p;
566	bus_space_tag_t iot;
567	bus_space_handle_t ioh;
568	size_t size;
569	uint32_t data, bufaddr, i;
570	int data_bytes, dac_data, dsp_in_size;
571	int dsp_out_size, dsp_in_buf, dsp_out_buf;
572
573	vc = hdl;
574	sc = (struct esa_softc *)vc->parent;
575	iot = sc->sc_iot;
576	ioh = sc->sc_ioh;
577	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
578	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
579	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
580	dac_data = ESA_DAC_DATA + (data_bytes * vc->index);
581	dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x20 * 2);
582	dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x20 * 2);
583	dsp_in_buf = dac_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
584	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
585
586	if (vc->play.active)
587		return EINVAL;
588
589	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
590		continue;
591	if (p == NULL) {
592		printf("%s: esa_trigger_output: bad addr %p\n",
593		    sc->sc_dev.dv_xname, start);
594		return EINVAL;
595	}
596
597	vc->play.active = 1;
598	vc->play.intr = intr;
599	vc->play.arg = intrarg;
600	vc->play.pos = 0;
601	vc->play.count = 0;
602	vc->play.buf = start;
603	vc->play.bufsize = size = (size_t)(((char *)end - (char *)start));
604	vc->play.blksize = blksize;
605	bufaddr = DMAADDR(p);
606	vc->play.start = bufaddr;
607
608#define LO(x) ((x) & 0x0000ffff)
609#define HI(x) ((x) >> 16)
610
611	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
612	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
613	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
614	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
615	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
616	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
617	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
618	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
619	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
620	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
621	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
622	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
623
624	/* DSP buffers */
625	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
626	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
627	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
628	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
629	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
630	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
631	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
632	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
633	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
634	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
635	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
636	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
637	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
638	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
639	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
640	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
641
642	/* Some per-client initializers */
643	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
644	    ESA_SRC3_DIRECTION_OFFSET + 12, dac_data + 40 + 8);
645	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
646	    ESA_SRC3_DIRECTION_OFFSET + 19, 0x400 + ESA_MINISRC_COEF_LOC);
647	/* Enable or disable low-pass filter? (0xff if rate > 45000) */
648	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
649	    ESA_SRC3_DIRECTION_OFFSET + 22,
650	    vc->play.mode.sample_rate > 45000 ? 0xff : 0);
651	/* Tell it which way DMA is going */
652	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
653	    ESA_CDATA_DMA_CONTROL,
654	    ESA_DMACONTROL_AUTOREPEAT + ESA_DMAC_PAGE3_SELECTOR +
655	    ESA_DMAC_BLOCKF_SELECTOR);
656
657	/* Set an armload of static initializers */
658	for (i = 0; i < (sizeof(esa_playvals) / sizeof(esa_playvals[0])); i++)
659		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
660		    esa_playvals[i].addr, esa_playvals[i].val);
661
662	/* Put us in the packed task lists */
663	esa_add_list(vc, &sc->msrc_list, dac_data >> ESA_DP_SHIFT_COUNT,
664		     vc->index);
665	esa_add_list(vc, &sc->dma_list, dac_data >> ESA_DP_SHIFT_COUNT,
666		     vc->index);
667	esa_add_list(vc, &sc->mixer_list, dac_data >> ESA_DP_SHIFT_COUNT,
668		     vc->index);
669#undef LO
670#undef HI
671
672	sc->sc_ntimers++;
673
674	if (sc->sc_ntimers == 1) {
675		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
676		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
677		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
678		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
679		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
680		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
681		    data | ESA_CLKRUN_GEN_ENABLE);
682	}
683
684	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
685	    ESA_CDATA_INSTANCE_READY, 1);
686	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
687	    ESA_KDATA_MIXER_TASK_NUMBER,
688	    sc->mixer_list.indexmap[vc->index]);
689
690	return 0;
691}
692
693static int
694esa_trigger_input(void *hdl, void *start, void *end, int blksize,
695    void (*intr)(void *), void *intrarg, const audio_params_t *param)
696{
697	struct esa_voice *vc;
698	struct esa_softc *sc;
699	struct esa_dma *p;
700	bus_space_tag_t iot;
701	bus_space_handle_t ioh;
702	uint32_t data, bufaddr, i;
703	size_t size;
704	int data_bytes, adc_data, dsp_in_size;
705	int dsp_out_size, dsp_in_buf, dsp_out_buf;
706
707	vc = hdl;
708	sc = (struct esa_softc *)vc->parent;
709	iot = sc->sc_iot;
710	ioh = sc->sc_ioh;
711	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
712	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
713	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
714	adc_data = ESA_DAC_DATA + (data_bytes * vc->index) + (data_bytes / 2);
715	dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x10 * 2);
716	dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x10 * 2);
717	dsp_in_buf = adc_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
718	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
719
720	vc->rec.data_offset = adc_data;
721
722	/* We only support 1 recording channel */
723	if (vc->index > 0)
724		return ENODEV;
725
726	if (vc->rec.active)
727		return EINVAL;
728
729	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
730		continue;
731	if (p == NULL) {
732		printf("%s: esa_trigger_input: bad addr %p\n",
733		    sc->sc_dev.dv_xname, start);
734		return EINVAL;
735	}
736
737	vc->rec.active = 1;
738	vc->rec.intr = intr;
739	vc->rec.arg = intrarg;
740	vc->rec.pos = 0;
741	vc->rec.count = 0;
742	vc->rec.buf = start;
743	vc->rec.bufsize = size = (size_t)(((char *)end - (char *)start));
744	vc->rec.blksize = blksize;
745	bufaddr = DMAADDR(p);
746	vc->rec.start = bufaddr;
747
748#define LO(x) ((x) & 0x0000ffff)
749#define HI(x) ((x) >> 16)
750
751	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
752	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
753	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
754	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
755	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
756	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
757	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
758	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
759	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
760	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
761	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
762	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
763
764	/* DSP buffers */
765	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
766	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
767	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
768	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
769	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
770	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
771	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
772	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
773	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
774	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
775	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
776	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
777	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
778	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
779	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
780	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
781
782	/* Some per-client initializers */
783	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
784	    ESA_SRC3_DIRECTION_OFFSET + 12, adc_data + 40 + 8);
785	/* Tell it which way DMA is going */
786	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
787	    ESA_CDATA_DMA_CONTROL,
788	    ESA_DMACONTROL_DIRECTION + ESA_DMACONTROL_AUTOREPEAT +
789	    ESA_DMAC_PAGE3_SELECTOR + ESA_DMAC_BLOCKF_SELECTOR);
790
791	/* Set an armload of static initializers */
792	for (i = 0; i < (sizeof(esa_recvals) / sizeof(esa_recvals[0])); i++)
793		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
794		    esa_recvals[i].addr, esa_recvals[i].val);
795
796	/* Put us in the packed task lists */
797	esa_add_list(vc, &sc->adc1_list, adc_data >> ESA_DP_SHIFT_COUNT,
798		     vc->index + ESA_NUM_VOICES);
799	esa_add_list(vc, &sc->msrc_list, adc_data >> ESA_DP_SHIFT_COUNT,
800		     vc->index + ESA_NUM_VOICES);
801	esa_add_list(vc, &sc->dma_list, adc_data >> ESA_DP_SHIFT_COUNT,
802		     vc->index + ESA_NUM_VOICES);
803#undef LO
804#undef HI
805
806	sc->sc_ntimers++;
807	if (sc->sc_ntimers == 1) {
808		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
809		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
810		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
811		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
812		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
813		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
814		    data | ESA_CLKRUN_GEN_ENABLE);
815	}
816
817	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
818	    ESA_CDATA_INSTANCE_READY, 1);
819	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_ADC1_REQUEST,
820	    1);
821
822	return 0;
823}
824
825/* Interrupt handler */
826static int
827esa_intr(void *hdl)
828{
829	struct esa_softc *sc;
830	struct esa_voice *vc;
831	bus_space_tag_t iot;
832	bus_space_handle_t ioh;
833	uint8_t status;
834	uint32_t pos;
835	uint32_t diff;
836	uint32_t blksize;
837	int i;
838
839	sc = hdl;
840	iot = sc->sc_iot;
841	ioh = sc->sc_ioh;
842
843	status = bus_space_read_1(iot, ioh, ESA_HOST_INT_STATUS);
844	if (status == 0xff)
845		return 0;
846
847	/* ack the interrupt */
848	bus_space_write_1(iot, ioh, ESA_HOST_INT_STATUS, status);
849
850	if (status & ESA_HV_INT_PENDING) {
851		uint8_t event;
852
853		printf("%s: hardware volume interrupt\n", sc->sc_dev.dv_xname);
854		event = bus_space_read_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER);
855		switch(event) {
856		case 0x99:
857		case 0xaa:
858		case 0x66:
859		case 0x88:
860			printf("%s: esa_intr: FIXME\n", sc->sc_dev.dv_xname);
861			break;
862		default:
863			printf("%s: unknown hwvol event 0x%02x\n",
864			    sc->sc_dev.dv_xname, event);
865			break;
866		}
867		bus_space_write_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER, 0x88);
868	}
869
870	if ((status & ESA_ASSP_INT_PENDING) == 0 ||
871	    (bus_space_read_1(iot, ioh,
872	     ESA_ASSP_CONTROL_B) & ESA_STOP_ASSP_CLOCK) != 0 ||
873	    (bus_space_read_1(iot, ioh,
874	     ESA_ASSP_HOST_INT_STATUS) & ESA_DSP2HOST_REQ_TIMER) == 0)
875		return 1;
876
877	bus_space_write_1(iot, ioh, ESA_ASSP_HOST_INT_STATUS,
878	    ESA_DSP2HOST_REQ_TIMER);
879
880	for (i = 0; i < ESA_NUM_VOICES; i++) {
881		vc = &sc->voice[i];
882
883		if (vc->play.active) {
884			pos = esa_get_pointer(sc, &vc->play) % vc->play.bufsize;
885			diff = (vc->play.bufsize + pos - vc->play.pos) %
886			    vc->play.bufsize;
887
888			vc->play.pos = pos;
889			vc->play.count += diff;
890			blksize = vc->play.blksize;
891
892			while (vc->play.count >= blksize) {
893				vc->play.count -= blksize;
894				(*vc->play.intr)(vc->play.arg);
895			}
896		}
897
898		if (vc->rec.active) {
899			pos = esa_get_pointer(sc, &vc->rec) % vc->rec.bufsize;
900			diff = (vc->rec.bufsize + pos - vc->rec.pos) %
901			    vc->rec.bufsize;
902
903			vc->rec.pos = pos;
904			vc->rec.count += diff;
905			blksize = vc->rec.blksize;
906
907			while (vc->rec.count >= blksize) {
908				vc->rec.count -= blksize;
909				(*vc->rec.intr)(vc->rec.arg);
910			}
911		}
912	}
913
914	return 1;
915}
916
917static int
918esa_allocmem(struct esa_softc *sc, size_t size, size_t align,
919	     struct esa_dma *p)
920{
921	int error;
922
923	p->size = size;
924	error = bus_dmamem_alloc(sc->sc_dmat, p->size, align, 0,
925				 p->segs, sizeof(p->segs) / sizeof(p->segs[0]),
926				 &p->nsegs, BUS_DMA_NOWAIT);
927	if (error)
928		return error;
929
930	error = bus_dmamem_map(sc->sc_dmat, p->segs, p->nsegs, p->size,
931				&p->addr, BUS_DMA_NOWAIT | BUS_DMA_COHERENT);
932	if (error)
933		goto free;
934
935	error = bus_dmamap_create(sc->sc_dmat, p->size, 1, p->size, 0,
936				  BUS_DMA_NOWAIT, &p->map);
937	if (error)
938		goto unmap;
939
940	error = bus_dmamap_load(sc->sc_dmat, p->map, p->addr, p->size, NULL,
941				BUS_DMA_NOWAIT);
942	if (error)
943		goto destroy;
944
945	return 0;
946
947destroy:
948	bus_dmamap_destroy(sc->sc_dmat, p->map);
949unmap:
950	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
951free:
952	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
953
954	return error;
955}
956
957static int
958esa_freemem(struct esa_softc *sc, struct esa_dma *p)
959{
960
961	bus_dmamap_unload(sc->sc_dmat, p->map);
962	bus_dmamap_destroy(sc->sc_dmat, p->map);
963	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
964	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
965
966	return 0;
967}
968
969/*
970 * Supporting Subroutines
971 */
972
973static int
974esa_match(device_t dev, struct cfdata *match, void *aux)
975{
976	struct pci_attach_args *pa;
977
978	pa = (struct pci_attach_args *)aux;
979	switch (PCI_VENDOR(pa->pa_id)) {
980	case PCI_VENDOR_ESSTECH:
981		switch(PCI_PRODUCT(pa->pa_id)) {
982		case PCI_PRODUCT_ESSTECH_ALLEGRO1:
983		case PCI_PRODUCT_ESSTECH_MAESTRO3:
984		case PCI_PRODUCT_ESSTECH_MAESTRO3_2:
985			return 1;
986		}
987	}
988
989	return 0;
990}
991
992static void
993esa_attach(device_t parent, device_t self, void *aux)
994{
995	struct esa_softc *sc;
996	struct pci_attach_args *pa;
997	pcitag_t tag;
998	pci_chipset_tag_t pc;
999	pci_intr_handle_t ih;
1000	const struct esa_card_type *card;
1001	const char *intrstr;
1002	uint32_t data;
1003	char devinfo[256];
1004	int revision, len;
1005	int i;
1006	int error;
1007
1008	sc = device_private(self);
1009	pa = (struct pci_attach_args *)aux;
1010	tag = pa->pa_tag;
1011	pc = pa->pa_pc;
1012	aprint_naive(": Audio controller\n");
1013
1014	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
1015	revision = PCI_REVISION(pa->pa_class);
1016	aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision);
1017
1018	for (card = esa_card_types; card->pci_vendor_id; card++)
1019		if (PCI_VENDOR(pa->pa_id) == card->pci_vendor_id &&
1020		    PCI_PRODUCT(pa->pa_id) == card->pci_product_id) {
1021			sc->type = card->type;
1022			sc->delay1 = card->delay1;
1023			sc->delay2 = card->delay2;
1024			break;
1025		}
1026
1027	data = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
1028	data |= (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE
1029	    | PCI_COMMAND_MASTER_ENABLE);
1030	pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, data);
1031
1032	/* Map I/O register */
1033	if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
1034	    &sc->sc_iot, &sc->sc_ioh, &sc->sc_iob, &sc->sc_ios)) {
1035		aprint_error("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
1036		return;
1037	}
1038
1039	/* Initialize softc */
1040	sc->sc_tag = tag;
1041	sc->sc_pct = pc;
1042	sc->sc_dmat = pa->pa_dmat;
1043
1044	/* Map and establish an interrupt */
1045	if (pci_intr_map(pa, &ih)) {
1046		aprint_error("%s: can't map interrupt\n", sc->sc_dev.dv_xname);
1047		return;
1048	}
1049	intrstr = pci_intr_string(pc, ih);
1050	sc->sc_ih = pci_intr_establish(pc, ih, IPL_AUDIO, esa_intr, self);
1051	if (sc->sc_ih == NULL) {
1052		aprint_error("%s: can't establish interrupt",
1053		    sc->sc_dev.dv_xname);
1054		if (intrstr != NULL)
1055			aprint_normal(" at %s", intrstr);
1056		aprint_normal("\n");
1057		return;
1058	}
1059	aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
1060
1061	/* power up chip */
1062	if ((error = pci_activate(pa->pa_pc, pa->pa_tag, self,
1063	    pci_activate_null)) && error != EOPNOTSUPP) {
1064		aprint_error("%s: cannot activate %d\n", sc->sc_dev.dv_xname,
1065		    error);
1066		return;
1067	}
1068
1069	/* Init chip */
1070	if (esa_init(sc) == -1) {
1071		aprint_error("%s: esa_attach: unable to initialize the card\n",
1072		    sc->sc_dev.dv_xname);
1073		return;
1074	}
1075
1076	/* create suspend save area */
1077	len = sizeof(uint16_t) * (ESA_REV_B_CODE_MEMORY_LENGTH
1078	    + ESA_REV_B_DATA_MEMORY_LENGTH + 1);
1079	sc->savemem = (uint16_t *)malloc(len, M_DEVBUF, M_NOWAIT | M_ZERO);
1080	if (sc->savemem == NULL) {
1081		aprint_error("%s: unable to allocate suspend buffer\n",
1082		    sc->sc_dev.dv_xname);
1083		return;
1084	}
1085
1086	/*
1087	 * Every card I've seen has had their channels swapped with respect
1088	 * to the mixer. Ie:
1089	 *  $ mixerctl -w outputs.master=0,191
1090	 * Would result in the _right_ speaker being turned off.
1091	 *
1092	 * So, we will swap the left and right mixer channels to compensate
1093	 * for this.
1094	 *
1095	 * XXX PR# 23620: The Dell C810 channels are not swapped. Match
1096	 *     on revision ID for now; this is probably wrong.
1097	 */
1098	if (revision == 0x10 && sc->type == ESS_MAESTRO3)
1099		sc->codec_flags = 0;
1100	else
1101		sc->codec_flags = AC97_HOST_SWAPPED_CHANNELS;
1102
1103
1104	/* Attach AC97 host interface */
1105	sc->host_if.arg = self;
1106	sc->host_if.attach = esa_attach_codec;
1107	sc->host_if.read = esa_read_codec;
1108	sc->host_if.write = esa_write_codec;
1109	sc->host_if.reset = esa_reset_codec;
1110	sc->host_if.flags = esa_flags_codec;
1111
1112	if (ac97_attach(&sc->host_if, self) != 0)
1113		return;
1114
1115	/* initialize list management structures */
1116	sc->mixer_list.mem_addr = ESA_KDATA_MIXER_XFER0;
1117	sc->mixer_list.max = ESA_MAX_VIRTUAL_MIXER_CHANNELS;
1118	sc->adc1_list.mem_addr = ESA_KDATA_ADC1_XFER0;
1119	sc->adc1_list.max = ESA_MAX_VIRTUAL_ADC1_CHANNELS;
1120	sc->dma_list.mem_addr = ESA_KDATA_DMA_XFER0;
1121	sc->dma_list.max = ESA_MAX_VIRTUAL_DMA_CHANNELS;
1122	sc->msrc_list.mem_addr = ESA_KDATA_INSTANCE0_MINISRC;
1123	sc->msrc_list.max = ESA_MAX_INSTANCE_MINISRC;
1124
1125	/* initialize index maps */
1126	for (i = 0; i < ESA_NUM_VOICES * 2; i++) {
1127		sc->mixer_list.indexmap[i] = -1;
1128		sc->msrc_list.indexmap[i] = -1;
1129		sc->dma_list.indexmap[i] = -1;
1130		sc->adc1_list.indexmap[i] = -1;
1131	}
1132	for (i = 0; i < ESA_NUM_VOICES; i++) {
1133		sc->voice[i].parent = &sc->sc_dev;
1134		sc->voice[i].index = i;
1135		sc->sc_audiodev[i] =
1136		    audio_attach_mi(&esa_hw_if, &sc->voice[i], &sc->sc_dev);
1137	}
1138
1139	if (!pmf_device_register(self, esa_suspend, esa_resume))
1140		aprint_error_dev(self, "couldn't establish power handler\n");
1141
1142	return;
1143}
1144
1145void
1146esa_childdet(device_t self, device_t child)
1147{
1148	struct esa_softc *sc = device_private(self);
1149	int i;
1150
1151	for (i = 0; i < ESA_NUM_VOICES; i++) {
1152		if (sc->sc_audiodev[i] == child) {
1153			sc->sc_audiodev[i] = NULL;
1154			break;
1155		}
1156	}
1157	KASSERT(i < ESA_NUM_VOICES);
1158}
1159
1160static int
1161esa_detach(device_t self, int flags)
1162{
1163	struct esa_softc *sc;
1164	int i;
1165
1166	sc = device_private(self);
1167	for (i = 0; i < ESA_NUM_VOICES; i++) {
1168		if (sc->sc_audiodev[i] != NULL)
1169			config_detach(sc->sc_audiodev[i], flags);
1170	}
1171
1172	if (sc->sc_ih != NULL)
1173		pci_intr_disestablish(sc->sc_pct, sc->sc_ih);
1174	if (sc->sc_ios)
1175		bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
1176
1177	free(sc->savemem, M_DEVBUF);
1178
1179	return 0;
1180}
1181
1182static uint16_t
1183esa_read_assp(struct esa_softc *sc, uint16_t region, uint16_t index)
1184{
1185	uint16_t data;
1186	bus_space_tag_t iot;
1187	bus_space_handle_t ioh;
1188
1189	iot = sc->sc_iot;
1190	ioh = sc->sc_ioh;
1191	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
1192	    region & ESA_MEMTYPE_MASK);
1193	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
1194	data = bus_space_read_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA);
1195
1196	return data;
1197}
1198
1199static void
1200esa_write_assp(struct esa_softc *sc, uint16_t region, uint16_t index,
1201	       uint16_t data)
1202{
1203	bus_space_tag_t iot;
1204	bus_space_handle_t ioh;
1205
1206	iot = sc->sc_iot;
1207	ioh = sc->sc_ioh;
1208	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
1209	    region & ESA_MEMTYPE_MASK);
1210	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
1211	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA, data);
1212
1213	return;
1214}
1215
1216static int
1217esa_init_codec(struct esa_softc *sc)
1218{
1219	bus_space_tag_t iot;
1220	bus_space_handle_t ioh;
1221	uint32_t data;
1222
1223	iot = sc->sc_iot;
1224	ioh = sc->sc_ioh;
1225	data = bus_space_read_1(iot, ioh, ESA_CODEC_COMMAND);
1226
1227	return (data & 0x1) ? 0 : 1;
1228}
1229
1230static int
1231esa_attach_codec(void *aux, struct ac97_codec_if *codec_if)
1232{
1233	struct esa_softc *sc;
1234
1235	sc = aux;
1236	sc->codec_if = codec_if;
1237
1238	return 0;
1239}
1240
1241static int
1242esa_read_codec(void *aux, uint8_t reg, uint16_t *result)
1243{
1244	struct esa_softc *sc;
1245	bus_space_tag_t iot;
1246	bus_space_handle_t ioh;
1247
1248	sc = aux;
1249	iot = sc->sc_iot;
1250	ioh = sc->sc_ioh;
1251	if (esa_wait(sc))
1252		printf("%s: esa_read_codec: timed out\n", sc->sc_dev.dv_xname);
1253	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, (reg & 0x7f) | 0x80);
1254	delay(50);
1255	if (esa_wait(sc))
1256		printf("%s: esa_read_codec: timed out\n", sc->sc_dev.dv_xname);
1257	*result = bus_space_read_2(iot, ioh, ESA_CODEC_DATA);
1258
1259	return 0;
1260}
1261
1262static int
1263esa_write_codec(void *aux, uint8_t reg, uint16_t data)
1264{
1265	struct esa_softc *sc;
1266	bus_space_tag_t iot;
1267	bus_space_handle_t ioh;
1268
1269	sc = aux;
1270	iot = sc->sc_iot;
1271	ioh = sc->sc_ioh;
1272	if (esa_wait(sc)) {
1273		printf("%s: esa_write_codec: timed out\n", sc->sc_dev.dv_xname);
1274		return -1;
1275	}
1276	bus_space_write_2(iot, ioh, ESA_CODEC_DATA, data);
1277	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, reg & 0x7f);
1278	delay(50);
1279
1280	return 0;
1281}
1282
1283static int
1284esa_reset_codec(void *aux)
1285{
1286
1287	return 0;
1288}
1289
1290static enum ac97_host_flags
1291esa_flags_codec(void *aux)
1292{
1293	struct esa_softc *sc;
1294
1295	sc = aux;
1296	return sc->codec_flags;
1297}
1298
1299static int
1300esa_wait(struct esa_softc *sc)
1301{
1302	int i, val;
1303	bus_space_tag_t iot;
1304	bus_space_handle_t ioh;
1305
1306	iot = sc->sc_iot;
1307	ioh = sc->sc_ioh;
1308	for (i = 0; i < 20; i++) {
1309		val = bus_space_read_1(iot, ioh, ESA_CODEC_STATUS);
1310		if ((val & 1) == 0)
1311			return 0;
1312		delay(2);
1313	}
1314
1315	return -1;
1316}
1317
1318static int
1319esa_init(struct esa_softc *sc)
1320{
1321	struct esa_voice *vc;
1322	bus_space_tag_t iot;
1323	bus_space_handle_t ioh;
1324	pcitag_t tag;
1325	pci_chipset_tag_t pc;
1326	uint32_t data, i, size;
1327	uint8_t reset_state;
1328	int data_bytes;
1329
1330	iot = sc->sc_iot;
1331	ioh = sc->sc_ioh;
1332	tag = sc->sc_tag;
1333	pc = sc->sc_pct;
1334	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
1335	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
1336	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
1337
1338	/* Disable legacy emulation */
1339	data = pci_conf_read(pc, tag, PCI_LEGACY_AUDIO_CTRL);
1340	data |= DISABLE_LEGACY;
1341	pci_conf_write(pc, tag, PCI_LEGACY_AUDIO_CTRL, data);
1342
1343	esa_config(sc);
1344
1345	reset_state = esa_assp_halt(sc);
1346
1347	esa_init_codec(sc);
1348	esa_codec_reset(sc);
1349
1350	/* Zero kernel and mixer data */
1351	size = ESA_REV_B_DATA_MEMORY_UNIT_LENGTH * ESA_NUM_UNITS_KERNEL_DATA;
1352	for (i = 0; i < size / 2; i++) {
1353		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1354		    ESA_KDATA_BASE_ADDR + i, 0);
1355		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1356		    ESA_KDATA_BASE_ADDR2 + i, 0);
1357	}
1358
1359	/* Init DMA pointer */
1360	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_CURRENT_DMA,
1361	    ESA_KDATA_DMA_XFER0);
1362
1363	/* Write kernel code into memory */
1364	size = sizeof(esa_assp_kernel_image);
1365	for (i = 0; i < size / 2; i++)
1366		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
1367		    ESA_REV_B_CODE_MEMORY_BEGIN + i, esa_assp_kernel_image[i]);
1368
1369	size = sizeof(esa_assp_minisrc_image);
1370	for (i = 0; i < size / 2; i++)
1371		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, 0x400 + i,
1372		    esa_assp_minisrc_image[i]);
1373
1374	/* Write the coefficients for the low pass filter */
1375	size = sizeof(esa_minisrc_lpf_image);
1376	for (i = 0; i < size / 2; i++)
1377		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
1378		    0x400 + ESA_MINISRC_COEF_LOC + i, esa_minisrc_lpf_image[i]);
1379	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
1380	    0x400 + ESA_MINISRC_COEF_LOC + size, 0x8000);
1381	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_TASK0, 0x400);
1382	/* Init the mixer number */
1383	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1384	     ESA_KDATA_MIXER_TASK_NUMBER, 0);
1385	/* Extreme kernel master volume */
1386	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1387	    ESA_KDATA_DAC_LEFT_VOLUME, ESA_ARB_VOLUME);
1388	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1389	    ESA_KDATA_DAC_RIGHT_VOLUME, ESA_ARB_VOLUME);
1390
1391	if (esa_amp_enable(sc))
1392		return -1;
1393
1394	/* Zero entire DAC/ADC area */
1395	for (i = 0x1100; i < 0x1c00; i++)
1396		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i, 0);
1397
1398	/* set some sane defaults */
1399	for (i = 0; i < ESA_NUM_VOICES; i++) {
1400		vc = &sc->voice[i];
1401		vc->play.data_offset = ESA_DAC_DATA + (data_bytes * i);
1402		vc->rec.data_offset = ESA_DAC_DATA + (data_bytes * i * 2);
1403	}
1404
1405	esa_enable_interrupts(sc);
1406
1407	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
1408	    reset_state | ESA_REGB_ENABLE_RESET);
1409
1410	return 0;
1411}
1412
1413static void
1414esa_config(struct esa_softc *sc)
1415{
1416	bus_space_tag_t iot;
1417	bus_space_handle_t ioh;
1418	pcitag_t tag;
1419	pci_chipset_tag_t pc;
1420	uint32_t data;
1421
1422	iot = sc->sc_iot;
1423	ioh = sc->sc_ioh;
1424	tag = sc->sc_tag;
1425	pc = sc->sc_pct;
1426
1427	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
1428	data &= ESA_REDUCED_DEBOUNCE;
1429	data |= ESA_PM_CTRL_ENABLE | ESA_CLK_DIV_BY_49 | ESA_USE_PCI_TIMING;
1430	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
1431
1432	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RESET_ASSP);
1433	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
1434	data &= ~ESA_INT_CLK_SELECT;
1435	if (sc->type == ESS_MAESTRO3) {
1436		data &= ~ESA_INT_CLK_MULT_ENABLE;
1437		data |= ESA_INT_CLK_SRC_NOT_PCI;
1438	}
1439	data &= ~(ESA_CLK_MULT_MODE_SELECT | ESA_CLK_MULT_MODE_SELECT_2);
1440	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
1441
1442	if (sc->type == ESS_ALLEGRO1) {
1443		data = pci_conf_read(pc, tag, ESA_PCI_USER_CONFIG);
1444		data |= ESA_IN_CLK_12MHZ_SELECT;
1445		pci_conf_write(pc, tag, ESA_PCI_USER_CONFIG, data);
1446	}
1447
1448	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_A);
1449	data &= ~(ESA_DSP_CLK_36MHZ_SELECT | ESA_ASSP_CLK_49MHZ_SELECT);
1450	data |= ESA_ASSP_CLK_49MHZ_SELECT;	/* XXX: Assumes 49MHz DSP */
1451	data |= ESA_ASSP_0_WS_ENABLE;
1452	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_A, data);
1453
1454	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RUN_ASSP);
1455
1456	return;
1457}
1458
1459static uint8_t
1460esa_assp_halt(struct esa_softc *sc)
1461{
1462	bus_space_tag_t iot;
1463	bus_space_handle_t ioh;
1464	uint8_t data, reset_state;
1465
1466	iot = sc->sc_iot;
1467	ioh = sc->sc_ioh;
1468	data = bus_space_read_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B);
1469	reset_state = data & ~ESA_REGB_STOP_CLOCK;
1470	delay(10000);
1471	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
1472			reset_state & ~ESA_REGB_ENABLE_RESET);
1473	delay(10000);
1474
1475	return reset_state;
1476}
1477
1478static void
1479esa_codec_reset(struct esa_softc *sc)
1480{
1481	bus_space_tag_t iot;
1482	bus_space_handle_t ioh;
1483	uint16_t data, dir;
1484	int retry;
1485
1486	iot = sc->sc_iot;
1487	ioh = sc->sc_ioh;
1488	retry = 0;
1489	do {
1490		data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
1491		dir = data | 0x10; /* assuming pci bus master? */
1492
1493		/* remote codec config */
1494		data = bus_space_read_2(iot, ioh, ESA_RING_BUS_CTRL_B);
1495		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_B,
1496		    data & ~ESA_SECOND_CODEC_ID_MASK);
1497		data = bus_space_read_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL);
1498		bus_space_write_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL,
1499		    data & ~ESA_COMMAND_ADDR_OUT);
1500		data = bus_space_read_2(iot, ioh, ESA_SDO_IN_DEST_CTRL);
1501		bus_space_write_2(iot, ioh, ESA_SDO_IN_DEST_CTRL,
1502		    data & ~ESA_STATUS_ADDR_IN);
1503
1504		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
1505				  ESA_IO_SRAM_ENABLE);
1506		delay(20);
1507
1508		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
1509		    dir & ~ESA_GPO_PRIMARY_AC97);
1510		bus_space_write_2(iot, ioh, ESA_GPIO_MASK,
1511				  ~ESA_GPO_PRIMARY_AC97);
1512		bus_space_write_2(iot, ioh, ESA_GPIO_DATA, 0);
1513		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
1514		    dir | ESA_GPO_PRIMARY_AC97);
1515		delay(sc->delay1 * 1000);
1516		bus_space_write_2(iot, ioh, ESA_GPIO_DATA,
1517				  ESA_GPO_PRIMARY_AC97);
1518		delay(5);
1519		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
1520		    ESA_IO_SRAM_ENABLE | ESA_SERIAL_AC_LINK_ENABLE);
1521		bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
1522		delay(sc->delay2 * 1000);
1523
1524		esa_read_codec(sc, 0x7c, &data);
1525		if ((data == 0) || (data == 0xffff)) {
1526			retry++;
1527			if (retry > 3) {
1528				printf("%s: esa_codec_reset: failed\n",
1529				    sc->sc_dev.dv_xname);
1530				break;
1531			}
1532			printf("%s: esa_codec_reset: retrying\n",
1533			    sc->sc_dev.dv_xname);
1534		} else
1535			retry = 0;
1536	} while (retry);
1537
1538	return;
1539}
1540
1541static int
1542esa_amp_enable(struct esa_softc *sc)
1543{
1544	bus_space_tag_t iot;
1545	bus_space_handle_t ioh;
1546	uint32_t gpo, polarity_port, polarity;
1547	uint16_t data;
1548
1549	iot = sc->sc_iot;
1550	ioh = sc->sc_ioh;
1551	switch (sc->type) {
1552	case ESS_ALLEGRO1:
1553		polarity_port = 0x1800;
1554		break;
1555	case ESS_MAESTRO3:
1556		polarity_port = 0x1100;
1557		break;
1558	default:
1559		printf("%s: esa_amp_enable: Unknown chip type!!!\n",
1560		    sc->sc_dev.dv_xname);
1561		return 1;
1562	}
1563
1564	gpo = (polarity_port >> 8) & 0x0f;
1565	polarity = polarity_port >> 12;
1566	polarity = !polarity;	/* Enable */
1567	polarity = polarity << gpo;
1568	gpo = 1 << gpo;
1569	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~gpo);
1570	data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
1571	bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION, data | gpo);
1572	data = ESA_GPO_SECONDARY_AC97 | ESA_GPO_PRIMARY_AC97 | polarity;
1573	bus_space_write_2(iot, ioh, ESA_GPIO_DATA, data);
1574	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
1575
1576	return 0;
1577}
1578
1579static void
1580esa_enable_interrupts(struct esa_softc *sc)
1581{
1582	bus_space_tag_t iot;
1583	bus_space_handle_t ioh;
1584	uint8_t data;
1585
1586	iot = sc->sc_iot;
1587	ioh = sc->sc_ioh;
1588	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
1589	    ESA_ASSP_INT_ENABLE | ESA_HV_INT_ENABLE);
1590	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_C);
1591	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C,
1592	    data | ESA_ASSP_HOST_INT_ENABLE);
1593}
1594
1595/*
1596 * List management
1597 */
1598static int
1599esa_add_list(struct esa_voice *vc, struct esa_list *el,
1600	     uint16_t val, int index)
1601{
1602	struct esa_softc *sc;
1603
1604	sc = (struct esa_softc *)vc->parent;
1605	el->indexmap[index] = el->currlen;
1606	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1607		       el->mem_addr + el->currlen,
1608		       val);
1609
1610	return el->currlen++;
1611}
1612
1613static void
1614esa_remove_list(struct esa_voice *vc, struct esa_list *el, int index)
1615{
1616	struct esa_softc *sc;
1617	uint16_t val;
1618	int lastindex;
1619	int vindex;
1620	int i;
1621
1622	sc = (struct esa_softc *)vc->parent;
1623	lastindex = el->currlen - 1;
1624	vindex = el->indexmap[index];
1625
1626	/* reset our virtual index */
1627	el->indexmap[index] = -1;
1628
1629	if (vindex != lastindex) {
1630		val = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1631				    el->mem_addr + lastindex);
1632		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1633			       el->mem_addr + vindex,
1634			       val);
1635		for (i = 0; i < ESA_NUM_VOICES * 2; i++)
1636			if (el->indexmap[i] == lastindex)
1637				break;
1638		if (i >= ESA_NUM_VOICES * 2)
1639			printf("%s: esa_remove_list: invalid task index\n",
1640			       sc->sc_dev.dv_xname);
1641		else
1642			el->indexmap[i] = vindex;
1643	}
1644
1645	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1646		       el->mem_addr + lastindex, 0);
1647	el->currlen--;
1648
1649	return;
1650}
1651
1652static bool
1653esa_suspend(device_t dv PMF_FN_ARGS)
1654{
1655	struct esa_softc *sc = device_private(dv);
1656	bus_space_tag_t iot = sc->sc_iot;
1657	bus_space_handle_t ioh = sc->sc_ioh;
1658	int i, index;
1659
1660	index = 0;
1661
1662	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL, 0);
1663	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C, 0);
1664
1665	esa_assp_halt(sc);
1666
1667	/* Save ASSP state */
1668	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
1669	    i++)
1670		sc->savemem[index++] = esa_read_assp(sc,
1671		    ESA_MEMTYPE_INTERNAL_CODE, i);
1672	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
1673	    i++)
1674		sc->savemem[index++] = esa_read_assp(sc,
1675		    ESA_MEMTYPE_INTERNAL_DATA, i);
1676
1677	return true;
1678}
1679
1680static bool
1681esa_resume(device_t dv PMF_FN_ARGS)
1682{
1683	struct esa_softc *sc = device_private(dv);
1684	bus_space_tag_t iot = sc->sc_iot;
1685	bus_space_handle_t ioh = sc->sc_ioh;
1686	int i, index;
1687	uint8_t reset_state;
1688	pcireg_t data;
1689
1690	index = 0;
1691
1692	delay(10000);
1693
1694	data = pci_conf_read(sc->sc_pct, sc->sc_tag, PCI_LEGACY_AUDIO_CTRL);
1695	pci_conf_write(sc->sc_pct, sc->sc_tag, PCI_LEGACY_AUDIO_CTRL,
1696	    data | DISABLE_LEGACY);
1697
1698	bus_space_write_4(iot, ioh, ESA_PCI_ACPI_CONTROL, ESA_PCI_ACPI_D0);
1699
1700	esa_config(sc);
1701
1702	reset_state = esa_assp_halt(sc);
1703
1704	esa_init_codec(sc);
1705	esa_codec_reset(sc);
1706
1707	/* restore ASSP */
1708	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
1709	    i++)
1710		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, i,
1711		    sc->savemem[index++]);
1712	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
1713	    i++)
1714		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i,
1715		    sc->savemem[index++]);
1716
1717	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_DMA_ACTIVE, 0);
1718	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
1719	    reset_state | ESA_REGB_ENABLE_RESET);
1720
1721	esa_enable_interrupts(sc);
1722	esa_amp_enable(sc);
1723
1724	/* Finally, power up AC97 codec */
1725	delay(1000);
1726	sc->codec_if->vtbl->restore_ports(sc->codec_if);
1727
1728	return true;
1729}
1730
1731static uint32_t
1732esa_get_pointer(struct esa_softc *sc, struct esa_channel *ch)
1733{
1734	uint16_t hi, lo;
1735	uint32_t addr;
1736	int data_offset;
1737
1738	data_offset = ch->data_offset;
1739	hi = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
1740	    ESA_CDATA_HOST_SRC_CURRENTH);
1741	lo = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
1742	    ESA_CDATA_HOST_SRC_CURRENTL);
1743
1744	addr = lo | ((uint32_t)hi << 16);
1745	return (addr - ch->start);
1746}
1747
1748static paddr_t
1749esa_mappage(void *addr, void *mem, off_t off, int prot)
1750{
1751	struct esa_voice *vc;
1752	struct esa_softc *sc;
1753	struct esa_dma *p;
1754
1755	vc = addr;
1756	sc = (struct esa_softc *)vc->parent;
1757	if (off < 0)
1758		return -1;
1759	for (p = vc->dma; p && KERNADDR(p) != mem; p = p->next)
1760		continue;
1761	if (p == NULL)
1762		return -1;
1763	return bus_dmamem_mmap(sc->sc_dmat, p->segs, p->nsegs,
1764			       off, prot, BUS_DMA_WAITOK);
1765}
1766