esa.c revision 1.64
1/* $NetBSD: esa.c,v 1.64 2019/05/08 13:40:18 isaki Exp $ */
2
3/*
4 * Copyright (c) 2001-2008 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 1.64 2019/05/08 13:40:18 isaki 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/kmem.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#include <sys/bus.h>
56#include <sys/intr.h>
57
58#include <dev/audio/audio_if.h>
59
60#include <dev/ic/ac97var.h>
61#include <dev/ic/ac97reg.h>
62
63#include <dev/pci/pcidevs.h>
64#include <dev/pci/pcivar.h>
65#include <dev/pci/esareg.h>
66#include <dev/pci/esadsp.h>
67#include <dev/pci/esavar.h>
68
69#define PCI_CBIO	0x10
70
71#define ESA_DAC_DATA	0x1100
72
73enum {
74	ESS_ALLEGRO1,
75	ESS_MAESTRO3
76};
77
78static const struct esa_card_type {
79	uint16_t pci_vendor_id;
80	uint16_t pci_product_id;
81	int type;
82	int delay1, delay2;
83} esa_card_types[] = {
84	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_ALLEGRO1,
85	  ESS_ALLEGRO1, 50, 800 },
86	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_MAESTRO3,
87	  ESS_MAESTRO3, 20, 500 },
88	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_MAESTRO3_2,
89	  ESS_MAESTRO3, 20, 500 },
90	{ 0, 0, 0, 0, 0 }
91};
92
93static struct audio_device esa_device = {
94	"ESS Allegro",
95	"",
96	"esa"
97};
98
99static int		esa_match(device_t, cfdata_t, void *);
100static void		esa_attach(device_t, device_t, void *);
101static int		esa_detach(device_t, int);
102static void		esa_childdet(device_t, device_t);
103
104/* audio(9) functions */
105static int		esa_query_format(void *, audio_format_query_t *);
106static int		esa_set_format(void *, int,
107				       const audio_params_t *,
108				       const audio_params_t *,
109				       audio_filter_reg_t *,
110				       audio_filter_reg_t *);
111static int		esa_round_blocksize(void *, int, int,
112					    const audio_params_t *);
113static int		esa_commit_settings(void *);
114static int		esa_halt_output(void *);
115static int		esa_halt_input(void *);
116static int		esa_set_port(void *, mixer_ctrl_t *);
117static int		esa_get_port(void *, mixer_ctrl_t *);
118static int		esa_query_devinfo(void *, mixer_devinfo_t *);
119static void *		esa_malloc(void *, int, size_t);
120static void		esa_free(void *, void *, size_t);
121static int		esa_getdev(void *, struct audio_device *);
122static int		esa_get_props(void *);
123static int		esa_trigger_output(void *, void *, void *, int,
124					   void (*)(void *), void *,
125					   const audio_params_t *);
126static int		esa_trigger_input(void *, void *, void *, int,
127					  void (*)(void *), void *,
128					  const audio_params_t *);
129static void		esa_get_locks(void *, kmutex_t **, kmutex_t **);
130
131static int		esa_intr(void *);
132static int		esa_allocmem(struct esa_softc *, size_t, size_t,
133				     struct esa_dma *);
134static int		esa_freemem(struct esa_softc *, struct esa_dma *);
135
136/* Supporting subroutines */
137static uint16_t		esa_read_assp(struct esa_softc *, uint16_t, uint16_t);
138static void		esa_write_assp(struct esa_softc *, uint16_t, uint16_t,
139				       uint16_t);
140static int		esa_init_codec(struct esa_softc *);
141static int		esa_attach_codec(void *, struct ac97_codec_if *);
142static int		esa_read_codec(void *, uint8_t, uint16_t *);
143static int		esa_write_codec(void *, uint8_t, uint16_t);
144static int		esa_reset_codec(void *);
145static enum ac97_host_flags	esa_flags_codec(void *);
146static int		esa_wait(struct esa_softc *);
147static int		esa_init(struct esa_softc *);
148static void		esa_config(struct esa_softc *);
149static uint8_t		esa_assp_halt(struct esa_softc *);
150static void		esa_codec_reset(struct esa_softc *);
151static int		esa_amp_enable(struct esa_softc *);
152static void		esa_enable_interrupts(struct esa_softc *);
153static uint32_t		esa_get_pointer(struct esa_softc *,
154					struct esa_channel *);
155
156/* list management */
157static int		esa_add_list(struct esa_voice *, struct esa_list *,
158				     uint16_t, int);
159static void		esa_remove_list(struct esa_voice *, struct esa_list *,
160					int);
161
162/* power management */
163static bool		esa_suspend(device_t, const pmf_qual_t *);
164static bool		esa_resume(device_t, const pmf_qual_t *);
165
166
167static const struct audio_format esa_formats[] = {
168	{
169		.mode		= AUMODE_PLAY | AUMODE_RECORD,
170		.encoding	= AUDIO_ENCODING_SLINEAR_LE,
171		.validbits	= 16,
172		.precision	= 16,
173		.channels	= 2,
174		.channel_mask	= AUFMT_STEREO,
175		.frequency_type	= 0,
176		.frequency	= { ESA_MINRATE, ESA_MAXRATE },
177	},
178};
179#define ESA_NFORMATS	__arraycount(esa_formats)
180
181static const struct audio_hw_if esa_hw_if = {
182	.query_format		= esa_query_format,
183	.set_format		= esa_set_format,
184	.round_blocksize	= esa_round_blocksize,
185	.commit_settings	= esa_commit_settings,
186	.halt_output		= esa_halt_output,
187	.halt_input		= esa_halt_input,
188	.getdev			= esa_getdev,
189	.set_port		= esa_set_port,
190	.get_port		= esa_get_port,
191	.query_devinfo		= esa_query_devinfo,
192	.allocm			= esa_malloc,
193	.freem			= esa_free,
194	.get_props		= esa_get_props,
195	.trigger_output		= esa_trigger_output,
196	.trigger_input		= esa_trigger_input,
197	.get_locks		= esa_get_locks,
198};
199
200CFATTACH_DECL2_NEW(esa, sizeof(struct esa_softc), esa_match, esa_attach,
201    esa_detach, NULL, NULL, esa_childdet);
202
203/*
204 * audio(9) functions
205 */
206
207static int
208esa_query_format(void *hdl, audio_format_query_t *afp)
209{
210
211	return audio_query_format(esa_formats, ESA_NFORMATS, afp);
212}
213
214static int
215esa_set_format(void *hdl, int setmode,
216    const audio_params_t *play, const audio_params_t *rec,
217    audio_filter_reg_t *pfil, audio_filter_reg_t *rfil)
218{
219	struct esa_voice *vc;
220
221	vc = hdl;
222	if ((setmode & AUMODE_PLAY))
223		vc->play.mode = *play;
224	if ((setmode & AUMODE_RECORD))
225		vc->rec.mode = *rec;
226
227	return 0;
228}
229
230static int
231esa_commit_settings(void *hdl)
232{
233	struct esa_voice *vc;
234	struct esa_softc *sc;
235	const audio_params_t *p;
236	const audio_params_t *r;
237	uint32_t data;
238	uint32_t freq;
239	int data_bytes;
240
241	vc = hdl;
242	sc = device_private(vc->parent);
243	p = &vc->play.mode;
244	r = &vc->rec.mode;
245	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
246	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
247	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255)
248	    &~ 255;
249	/* playback */
250	vc->play.data_offset = ESA_DAC_DATA + (data_bytes * vc->index);
251	if (p->channels == 1)
252		data = 1;
253	else
254		data = 0;
255	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
256		       vc->play.data_offset + ESA_SRC3_MODE_OFFSET,
257		       data);
258	if (p->precision  == 8)
259		data = 1;
260	else
261		data = 0;
262	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
263		       vc->play.data_offset + ESA_SRC3_WORD_LENGTH_OFFSET,
264		       data);
265	if ((freq = ((p->sample_rate << 15) + 24000) / 48000) != 0) {
266		freq--;
267	}
268	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
269		       vc->play.data_offset + ESA_CDATA_FREQUENCY, freq);
270
271	/* recording */
272	vc->rec.data_offset = ESA_DAC_DATA + (data_bytes * vc->index) +
273			      (data_bytes / 2);
274	if (r->channels == 1)
275		data = 1;
276	else
277		data = 0;
278	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
279		       vc->rec.data_offset + ESA_SRC3_MODE_OFFSET,
280		       data);
281	if (r->precision == 8)
282		data = 1;
283	else
284		data = 0;
285	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
286		       vc->rec.data_offset + ESA_SRC3_WORD_LENGTH_OFFSET,
287		       data);
288	if ((freq = ((r->sample_rate << 15) + 24000) / 48000) != 0) {
289		freq--;
290	}
291	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
292		       vc->rec.data_offset + ESA_CDATA_FREQUENCY, freq);
293
294	return 0;
295};
296
297static int
298esa_round_blocksize(void *hdl, int bs, int mode,
299    const audio_params_t *param)
300{
301
302	return bs & -0x20;	/* Be conservative; align to 32 bytes */
303}
304
305static int
306esa_halt_output(void *hdl)
307{
308	struct esa_voice *vc;
309	struct esa_softc *sc;
310	bus_space_tag_t iot;
311	bus_space_handle_t ioh;
312	uint16_t data;
313
314	vc = hdl;
315	sc = device_private(vc->parent);
316	iot = sc->sc_iot;
317	ioh = sc->sc_ioh;
318	if (vc->play.active == 0)
319		return 0;
320
321	vc->play.active = 0;
322
323	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
324		       ESA_CDATA_INSTANCE_READY + vc->play.data_offset, 0);
325
326	sc->sc_ntimers--;
327	if (sc->sc_ntimers == 0) {
328		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
329			       ESA_KDATA_TIMER_COUNT_RELOAD, 0);
330		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
331			       ESA_KDATA_TIMER_COUNT_CURRENT, 0);
332		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
333		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
334		    data & ~ESA_CLKRUN_GEN_ENABLE);
335	}
336
337	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
338		       ESA_KDATA_MIXER_TASK_NUMBER,
339		       sc->mixer_list.indexmap[vc->index]);
340	/* remove ourselves from the packed lists */
341	esa_remove_list(vc, &sc->mixer_list, vc->index);
342	esa_remove_list(vc, &sc->dma_list, vc->index);
343	esa_remove_list(vc, &sc->msrc_list, vc->index);
344
345	return 0;
346}
347
348static int
349esa_halt_input(void *hdl)
350{
351	struct esa_voice *vc;
352	struct esa_softc *sc;
353	bus_space_tag_t iot;
354	bus_space_handle_t ioh;
355	uint32_t data;
356
357	vc = hdl;
358	sc = device_private(vc->parent);
359	iot = sc->sc_iot;
360	ioh = sc->sc_ioh;
361	if (vc->rec.active == 0)
362		return 0;
363
364	vc->rec.active = 0;
365
366	sc->sc_ntimers--;
367	if (sc->sc_ntimers == 0) {
368		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
369			       ESA_KDATA_TIMER_COUNT_RELOAD, 0);
370		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
371			       ESA_KDATA_TIMER_COUNT_CURRENT, 0);
372		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
373		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
374				  data & ~ESA_CLKRUN_GEN_ENABLE);
375	}
376
377	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, vc->rec.data_offset +
378		       ESA_CDATA_INSTANCE_READY, 0);
379	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_ADC1_REQUEST,
380		       0);
381
382	/* remove ourselves from the packed lists */
383	esa_remove_list(vc, &sc->adc1_list, vc->index + ESA_NUM_VOICES);
384	esa_remove_list(vc, &sc->dma_list, vc->index + ESA_NUM_VOICES);
385	esa_remove_list(vc, &sc->msrc_list, vc->index + ESA_NUM_VOICES);
386
387	return 0;
388}
389
390static void *
391esa_malloc(void *hdl, int direction, size_t size)
392{
393	struct esa_voice *vc;
394	struct esa_softc *sc;
395	struct esa_dma *p;
396	int error;
397
398	p = kmem_alloc(sizeof(*p), KM_SLEEP);
399	vc = hdl;
400	sc = device_private(vc->parent);
401	error = esa_allocmem(sc, size, 16, p);
402	if (error) {
403		kmem_free(p, sizeof(*p));
404		aprint_error_dev(sc->sc_dev,
405		    "%s: not enough memory\n", __func__);
406		return 0;
407	}
408	p->next = vc->dma;
409	vc->dma = p;
410
411	return KERNADDR(p);
412}
413
414static void
415esa_free(void *hdl, void *addr, size_t size)
416{
417	struct esa_voice *vc;
418	struct esa_softc *sc;
419	struct esa_dma *p;
420	struct esa_dma **pp;
421
422	vc = hdl;
423	sc = device_private(vc->parent);
424	for (pp = &vc->dma; (p = *pp) != NULL; pp = &p->next)
425		if (KERNADDR(p) == addr) {
426			esa_freemem(sc, p);
427			*pp = p->next;
428			kmem_free(p, sizeof(*p));
429			return;
430		}
431}
432
433static int
434esa_getdev(void *hdl, struct audio_device *ret)
435{
436
437	*ret = esa_device;
438	return 0;
439}
440
441static int
442esa_set_port(void *hdl, mixer_ctrl_t *mc)
443{
444	struct esa_voice *vc;
445	struct esa_softc *sc;
446
447	vc = hdl;
448	sc = device_private(vc->parent);
449	return sc->codec_if->vtbl->mixer_set_port(sc->codec_if, mc);
450}
451
452static int
453esa_get_port(void *hdl, mixer_ctrl_t *mc)
454{
455	struct esa_voice *vc;
456	struct esa_softc *sc;
457
458	vc = hdl;
459	sc = device_private(vc->parent);
460	return sc->codec_if->vtbl->mixer_get_port(sc->codec_if, mc);
461}
462
463static int
464esa_query_devinfo(void *hdl, mixer_devinfo_t *di)
465{
466	struct esa_voice *vc;
467	struct esa_softc *sc;
468
469	vc = hdl;
470	sc = device_private(vc->parent);
471	return sc->codec_if->vtbl->query_devinfo(sc->codec_if, di);
472}
473
474static int
475esa_get_props(void *hdl)
476{
477
478	return AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
479}
480
481static int
482esa_trigger_output(void *hdl, void *start, void *end, int blksize,
483    void (*intr)(void *), void *intrarg, const audio_params_t *param)
484{
485	struct esa_voice *vc;
486	struct esa_softc *sc;
487	struct esa_dma *p;
488	bus_space_tag_t iot;
489	bus_space_handle_t ioh;
490	size_t size;
491	uint32_t data, bufaddr, i;
492	int data_bytes, dac_data, dsp_in_size;
493	int dsp_out_size, dsp_in_buf, dsp_out_buf;
494
495	vc = hdl;
496	sc = device_private(vc->parent);
497	iot = sc->sc_iot;
498	ioh = sc->sc_ioh;
499	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
500	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
501	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
502	dac_data = ESA_DAC_DATA + (data_bytes * vc->index);
503	dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x20 * 2);
504	dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x20 * 2);
505	dsp_in_buf = dac_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
506	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
507
508	if (vc->play.active)
509		return EINVAL;
510
511	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
512		continue;
513	if (p == NULL) {
514		aprint_error_dev(sc->sc_dev, "%s: bad addr %p\n", __func__,
515		    start);
516		return EINVAL;
517	}
518
519	vc->play.active = 1;
520	vc->play.intr = intr;
521	vc->play.arg = intrarg;
522	vc->play.pos = 0;
523	vc->play.count = 0;
524	vc->play.buf = start;
525	vc->play.bufsize = size = (size_t)(((char *)end - (char *)start));
526	vc->play.blksize = blksize;
527	bufaddr = DMAADDR(p);
528	vc->play.start = bufaddr;
529
530#define LO(x) ((x) & 0x0000ffff)
531#define HI(x) ((x) >> 16)
532
533	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
534	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
535	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
536	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
537	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
538	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
539	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
540	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
541	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
542	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
543	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
544	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
545
546	/* DSP buffers */
547	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
548	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
549	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
550	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
551	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
552	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
553	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
554	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
555	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
556	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
557	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
558	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
559	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
560	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
561	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
562	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
563
564	/* Some per-client initializers */
565	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
566	    ESA_SRC3_DIRECTION_OFFSET + 12, dac_data + 40 + 8);
567	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
568	    ESA_SRC3_DIRECTION_OFFSET + 19, 0x400 + ESA_MINISRC_COEF_LOC);
569	/* Enable or disable low-pass filter? (0xff if rate > 45000) */
570	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
571	    ESA_SRC3_DIRECTION_OFFSET + 22,
572	    vc->play.mode.sample_rate > 45000 ? 0xff : 0);
573	/* Tell it which way DMA is going */
574	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
575	    ESA_CDATA_DMA_CONTROL,
576	    ESA_DMACONTROL_AUTOREPEAT + ESA_DMAC_PAGE3_SELECTOR +
577	    ESA_DMAC_BLOCKF_SELECTOR);
578
579	/* Set an armload of static initializers */
580	for (i = 0; i < __arraycount(esa_playvals); i++)
581		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
582		    esa_playvals[i].addr, esa_playvals[i].val);
583
584	/* Put us in the packed task lists */
585	esa_add_list(vc, &sc->msrc_list, dac_data >> ESA_DP_SHIFT_COUNT,
586		     vc->index);
587	esa_add_list(vc, &sc->dma_list, dac_data >> ESA_DP_SHIFT_COUNT,
588		     vc->index);
589	esa_add_list(vc, &sc->mixer_list, dac_data >> ESA_DP_SHIFT_COUNT,
590		     vc->index);
591#undef LO
592#undef HI
593
594	sc->sc_ntimers++;
595
596	if (sc->sc_ntimers == 1) {
597		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
598		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
599		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
600		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
601		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
602		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
603		    data | ESA_CLKRUN_GEN_ENABLE);
604	}
605
606	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
607	    ESA_CDATA_INSTANCE_READY, 1);
608	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
609	    ESA_KDATA_MIXER_TASK_NUMBER,
610	    sc->mixer_list.indexmap[vc->index]);
611
612	return 0;
613}
614
615static int
616esa_trigger_input(void *hdl, void *start, void *end, int blksize,
617    void (*intr)(void *), void *intrarg, const audio_params_t *param)
618{
619	struct esa_voice *vc;
620	struct esa_softc *sc;
621	struct esa_dma *p;
622	bus_space_tag_t iot;
623	bus_space_handle_t ioh;
624	uint32_t data, bufaddr, i;
625	size_t size;
626	int data_bytes, adc_data, dsp_in_size;
627	int dsp_out_size, dsp_in_buf, dsp_out_buf;
628
629	vc = hdl;
630	sc = device_private(vc->parent);
631	iot = sc->sc_iot;
632	ioh = sc->sc_ioh;
633	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
634	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
635	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
636	adc_data = ESA_DAC_DATA + (data_bytes * vc->index) + (data_bytes / 2);
637	dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x10 * 2);
638	dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x10 * 2);
639	dsp_in_buf = adc_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
640	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
641
642	vc->rec.data_offset = adc_data;
643
644	/* We only support 1 recording channel */
645	if (vc->index > 0)
646		return ENODEV;
647
648	if (vc->rec.active)
649		return EINVAL;
650
651	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
652		continue;
653	if (p == NULL) {
654		aprint_error_dev(sc->sc_dev, "%s: bad addr %p\n",
655		    __func__, start);
656		return EINVAL;
657	}
658
659	vc->rec.active = 1;
660	vc->rec.intr = intr;
661	vc->rec.arg = intrarg;
662	vc->rec.pos = 0;
663	vc->rec.count = 0;
664	vc->rec.buf = start;
665	vc->rec.bufsize = size = (size_t)(((char *)end - (char *)start));
666	vc->rec.blksize = blksize;
667	bufaddr = DMAADDR(p);
668	vc->rec.start = bufaddr;
669
670#define LO(x) ((x) & 0x0000ffff)
671#define HI(x) ((x) >> 16)
672
673	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
674	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
675	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
676	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
677	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
678	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
679	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
680	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
681	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
682	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
683	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
684	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
685
686	/* DSP buffers */
687	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
688	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
689	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
690	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
691	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
692	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
693	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
694	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
695	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
696	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
697	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
698	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
699	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
700	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
701	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
702	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
703
704	/* Some per-client initializers */
705	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
706	    ESA_SRC3_DIRECTION_OFFSET + 12, adc_data + 40 + 8);
707	/* Tell it which way DMA is going */
708	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
709	    ESA_CDATA_DMA_CONTROL,
710	    ESA_DMACONTROL_DIRECTION + ESA_DMACONTROL_AUTOREPEAT +
711	    ESA_DMAC_PAGE3_SELECTOR + ESA_DMAC_BLOCKF_SELECTOR);
712
713	/* Set an armload of static initializers */
714	for (i = 0; i < __arraycount(esa_recvals); i++)
715		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
716		    esa_recvals[i].addr, esa_recvals[i].val);
717
718	/* Put us in the packed task lists */
719	esa_add_list(vc, &sc->adc1_list, adc_data >> ESA_DP_SHIFT_COUNT,
720		     vc->index + ESA_NUM_VOICES);
721	esa_add_list(vc, &sc->msrc_list, adc_data >> ESA_DP_SHIFT_COUNT,
722		     vc->index + ESA_NUM_VOICES);
723	esa_add_list(vc, &sc->dma_list, adc_data >> ESA_DP_SHIFT_COUNT,
724		     vc->index + ESA_NUM_VOICES);
725#undef LO
726#undef HI
727
728	sc->sc_ntimers++;
729	if (sc->sc_ntimers == 1) {
730		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
731		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
732		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
733		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
734		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
735		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
736		    data | ESA_CLKRUN_GEN_ENABLE);
737	}
738
739	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
740	    ESA_CDATA_INSTANCE_READY, 1);
741	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_ADC1_REQUEST,
742	    1);
743
744	return 0;
745}
746
747/* Interrupt handler */
748static int
749esa_intr(void *hdl)
750{
751	struct esa_softc *sc;
752	struct esa_voice *vc;
753	bus_space_tag_t iot;
754	bus_space_handle_t ioh;
755	uint8_t status;
756	uint32_t pos;
757	uint32_t diff;
758	uint32_t blksize;
759	int i;
760
761	sc = hdl;
762	mutex_spin_enter(&sc->sc_intr_lock);
763
764	iot = sc->sc_iot;
765	ioh = sc->sc_ioh;
766
767	status = bus_space_read_1(iot, ioh, ESA_HOST_INT_STATUS);
768	if (status == 0xff) {
769		mutex_spin_exit(&sc->sc_intr_lock);
770		return 0;
771	}
772
773	/* ack the interrupt */
774	bus_space_write_1(iot, ioh, ESA_HOST_INT_STATUS, status);
775
776	if (status & ESA_HV_INT_PENDING) {
777		uint8_t event;
778
779		aprint_normal_dev(sc->sc_dev, "hardware volume interrupt\n");
780		event = bus_space_read_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER);
781		switch(event) {
782		case 0xaa:	/* volume up */
783			pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_UP);
784			break;
785		case 0x66:	/* volume down */
786			pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_DOWN);
787			break;
788		case 0x88:	/* mute */
789			pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_TOGGLE);
790			break;
791		default:
792			aprint_normal_dev(sc->sc_dev,
793			    "unknown hwvol event 0x%02x\n", event);
794			break;
795		}
796		bus_space_write_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER, 0x88);
797	}
798
799	if ((status & ESA_ASSP_INT_PENDING) == 0 ||
800	    (bus_space_read_1(iot, ioh,
801	     ESA_ASSP_CONTROL_B) & ESA_STOP_ASSP_CLOCK) != 0 ||
802	    (bus_space_read_1(iot, ioh,
803	     ESA_ASSP_HOST_INT_STATUS) & ESA_DSP2HOST_REQ_TIMER) == 0) {
804		mutex_spin_exit(&sc->sc_intr_lock);
805		return 1;
806	}
807
808	bus_space_write_1(iot, ioh, ESA_ASSP_HOST_INT_STATUS,
809	    ESA_DSP2HOST_REQ_TIMER);
810
811	for (i = 0; i < ESA_NUM_VOICES; i++) {
812		vc = &sc->voice[i];
813
814		if (vc->play.active) {
815			pos = esa_get_pointer(sc, &vc->play) % vc->play.bufsize;
816			diff = (vc->play.bufsize + pos - vc->play.pos) %
817			    vc->play.bufsize;
818
819			vc->play.pos = pos;
820			vc->play.count += diff;
821			blksize = vc->play.blksize;
822
823			while (vc->play.count >= blksize) {
824				vc->play.count -= blksize;
825				(*vc->play.intr)(vc->play.arg);
826			}
827		}
828
829		if (vc->rec.active) {
830			pos = esa_get_pointer(sc, &vc->rec) % vc->rec.bufsize;
831			diff = (vc->rec.bufsize + pos - vc->rec.pos) %
832			    vc->rec.bufsize;
833
834			vc->rec.pos = pos;
835			vc->rec.count += diff;
836			blksize = vc->rec.blksize;
837
838			while (vc->rec.count >= blksize) {
839				vc->rec.count -= blksize;
840				(*vc->rec.intr)(vc->rec.arg);
841			}
842		}
843	}
844
845	mutex_spin_exit(&sc->sc_intr_lock);
846	return 1;
847}
848
849static int
850esa_allocmem(struct esa_softc *sc, size_t size, size_t align,
851	     struct esa_dma *p)
852{
853	int error;
854
855	p->size = size;
856	error = bus_dmamem_alloc(sc->sc_dmat, p->size, align, 0,
857				 p->segs, __arraycount(p->segs),
858				 &p->nsegs, BUS_DMA_WAITOK);
859	if (error)
860		return error;
861
862	error = bus_dmamem_map(sc->sc_dmat, p->segs, p->nsegs, p->size,
863				&p->addr, BUS_DMA_WAITOK | BUS_DMA_COHERENT);
864	if (error)
865		goto free;
866
867	error = bus_dmamap_create(sc->sc_dmat, p->size, 1, p->size, 0,
868				  BUS_DMA_WAITOK, &p->map);
869	if (error)
870		goto unmap;
871
872	error = bus_dmamap_load(sc->sc_dmat, p->map, p->addr, p->size, NULL,
873				BUS_DMA_WAITOK);
874	if (error)
875		goto destroy;
876
877	return 0;
878
879destroy:
880	bus_dmamap_destroy(sc->sc_dmat, p->map);
881unmap:
882	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
883free:
884	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
885
886	return error;
887}
888
889static int
890esa_freemem(struct esa_softc *sc, struct esa_dma *p)
891{
892
893	bus_dmamap_unload(sc->sc_dmat, p->map);
894	bus_dmamap_destroy(sc->sc_dmat, p->map);
895	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
896	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
897
898	return 0;
899}
900
901/*
902 * Supporting Subroutines
903 */
904
905static int
906esa_match(device_t dev, cfdata_t match, void *aux)
907{
908	struct pci_attach_args *pa;
909
910	pa = (struct pci_attach_args *)aux;
911	switch (PCI_VENDOR(pa->pa_id)) {
912	case PCI_VENDOR_ESSTECH:
913		switch(PCI_PRODUCT(pa->pa_id)) {
914		case PCI_PRODUCT_ESSTECH_ALLEGRO1:
915		case PCI_PRODUCT_ESSTECH_MAESTRO3:
916		case PCI_PRODUCT_ESSTECH_MAESTRO3_2:
917			return 1;
918		}
919	}
920
921	return 0;
922}
923
924static void
925esa_attach(device_t parent, device_t self, void *aux)
926{
927	struct esa_softc *sc;
928	struct pci_attach_args *pa;
929	pcitag_t tag;
930	pci_chipset_tag_t pc;
931	pci_intr_handle_t ih;
932	const struct esa_card_type *card;
933	const char *intrstr;
934	uint32_t data;
935	int revision, i, error;
936	char intrbuf[PCI_INTRSTR_LEN];
937
938	sc = device_private(self);
939	pa = (struct pci_attach_args *)aux;
940	tag = pa->pa_tag;
941	pc = pa->pa_pc;
942
943	pci_aprint_devinfo(pa, "Audio controller");
944
945	revision = PCI_REVISION(pa->pa_class);
946
947	for (card = esa_card_types; card->pci_vendor_id; card++)
948		if (PCI_VENDOR(pa->pa_id) == card->pci_vendor_id &&
949		    PCI_PRODUCT(pa->pa_id) == card->pci_product_id) {
950			sc->type = card->type;
951			sc->delay1 = card->delay1;
952			sc->delay2 = card->delay2;
953			break;
954		}
955
956	data = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
957	data |= (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE
958	    | PCI_COMMAND_MASTER_ENABLE);
959	pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, data);
960
961	/* Map I/O register */
962	if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
963	    &sc->sc_iot, &sc->sc_ioh, &sc->sc_iob, &sc->sc_ios)) {
964		aprint_error_dev(sc->sc_dev, "can't map i/o space\n");
965		return;
966	}
967
968	/* Initialize softc */
969	sc->sc_dev = self;
970	sc->sc_tag = tag;
971	sc->sc_pct = pc;
972	sc->sc_dmat = pa->pa_dmat;
973
974	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
975	mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO);
976
977	/* Map and establish an interrupt */
978	if (pci_intr_map(pa, &ih)) {
979		aprint_error_dev(sc->sc_dev, "can't map interrupt\n");
980		mutex_destroy(&sc->sc_lock);
981		mutex_destroy(&sc->sc_intr_lock);
982		return;
983	}
984	intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf));
985	sc->sc_ih = pci_intr_establish_xname(pc, ih, IPL_AUDIO, esa_intr, sc,
986	    device_xname(self));
987	if (sc->sc_ih == NULL) {
988		aprint_error_dev(sc->sc_dev, "can't establish interrupt");
989		if (intrstr != NULL)
990			aprint_error(" at %s", intrstr);
991		aprint_error("\n");
992		mutex_destroy(&sc->sc_lock);
993		mutex_destroy(&sc->sc_intr_lock);
994		return;
995	}
996	aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
997
998	/* power up chip */
999	if ((error = pci_activate(pa->pa_pc, pa->pa_tag, self,
1000	    pci_activate_null)) && error != EOPNOTSUPP) {
1001		aprint_error_dev(sc->sc_dev, "cannot activate %d\n", error);
1002		mutex_destroy(&sc->sc_lock);
1003		mutex_destroy(&sc->sc_intr_lock);
1004		return;
1005	}
1006
1007	/* Init chip */
1008	if (esa_init(sc) == -1) {
1009		aprint_error_dev(sc->sc_dev,
1010		    "esa_attach: unable to initialize the card\n");
1011		mutex_destroy(&sc->sc_lock);
1012		mutex_destroy(&sc->sc_intr_lock);
1013		return;
1014	}
1015
1016	/* create suspend save area */
1017	sc->savememsz = sizeof(uint16_t) * (ESA_REV_B_CODE_MEMORY_LENGTH
1018	    + ESA_REV_B_DATA_MEMORY_LENGTH + 1);
1019	sc->savemem = kmem_zalloc(sc->savememsz, KM_SLEEP);
1020
1021	/*
1022	 * Every card I've seen has had their channels swapped with respect
1023	 * to the mixer. Ie:
1024	 *  $ mixerctl -w outputs.master=0,191
1025	 * Would result in the _right_ speaker being turned off.
1026	 *
1027	 * So, we will swap the left and right mixer channels to compensate
1028	 * for this.
1029	 *
1030	 * XXX PR# 23620: The Dell C810 channels are not swapped. Match
1031	 *     on revision ID for now; this is probably wrong.
1032	 */
1033	if (revision == 0x10 && sc->type == ESS_MAESTRO3)
1034		sc->codec_flags = 0;
1035	else
1036		sc->codec_flags = AC97_HOST_SWAPPED_CHANNELS;
1037
1038	/* initialize list management structures */
1039	sc->mixer_list.mem_addr = ESA_KDATA_MIXER_XFER0;
1040	sc->mixer_list.max = ESA_MAX_VIRTUAL_MIXER_CHANNELS;
1041	sc->adc1_list.mem_addr = ESA_KDATA_ADC1_XFER0;
1042	sc->adc1_list.max = ESA_MAX_VIRTUAL_ADC1_CHANNELS;
1043	sc->dma_list.mem_addr = ESA_KDATA_DMA_XFER0;
1044	sc->dma_list.max = ESA_MAX_VIRTUAL_DMA_CHANNELS;
1045	sc->msrc_list.mem_addr = ESA_KDATA_INSTANCE0_MINISRC;
1046	sc->msrc_list.max = ESA_MAX_INSTANCE_MINISRC;
1047
1048	/* initialize index maps */
1049	for (i = 0; i < ESA_NUM_VOICES * 2; i++) {
1050		sc->mixer_list.indexmap[i] = -1;
1051		sc->msrc_list.indexmap[i] = -1;
1052		sc->dma_list.indexmap[i] = -1;
1053		sc->adc1_list.indexmap[i] = -1;
1054	}
1055
1056	/* Attach AC97 host interface */
1057	sc->host_if.arg = sc;
1058	sc->host_if.attach = esa_attach_codec;
1059	sc->host_if.read = esa_read_codec;
1060	sc->host_if.write = esa_write_codec;
1061	sc->host_if.reset = esa_reset_codec;
1062	sc->host_if.flags = esa_flags_codec;
1063
1064	if (ac97_attach(&sc->host_if, self, &sc->sc_lock) != 0) {
1065		mutex_destroy(&sc->sc_lock);
1066		mutex_destroy(&sc->sc_intr_lock);
1067		return;
1068	}
1069
1070	/* Attach audio interface. */
1071	for (i = 0; i < ESA_NUM_VOICES; i++) {
1072		sc->voice[i].parent = sc->sc_dev;
1073		sc->voice[i].index = i;
1074		sc->sc_audiodev[i] =
1075		    audio_attach_mi(&esa_hw_if, &sc->voice[i], sc->sc_dev);
1076	}
1077
1078	if (!pmf_device_register(self, esa_suspend, esa_resume))
1079		aprint_error_dev(self, "couldn't establish power handler\n");
1080
1081	return;
1082}
1083
1084void
1085esa_childdet(device_t self, device_t child)
1086{
1087	struct esa_softc *sc = device_private(self);
1088	int i;
1089
1090	for (i = 0; i < ESA_NUM_VOICES; i++) {
1091		if (sc->sc_audiodev[i] == child) {
1092			sc->sc_audiodev[i] = NULL;
1093			break;
1094		}
1095	}
1096	KASSERT(i < ESA_NUM_VOICES);
1097}
1098
1099static int
1100esa_detach(device_t self, int flags)
1101{
1102	struct esa_softc *sc;
1103	int i;
1104
1105	sc = device_private(self);
1106	for (i = 0; i < ESA_NUM_VOICES; i++) {
1107		if (sc->sc_audiodev[i] != NULL)
1108			config_detach(sc->sc_audiodev[i], flags);
1109	}
1110
1111	if (sc->sc_ih != NULL)
1112		pci_intr_disestablish(sc->sc_pct, sc->sc_ih);
1113	if (sc->sc_ios)
1114		bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
1115
1116	kmem_free(sc->savemem, sc->savememsz);
1117	mutex_destroy(&sc->sc_lock);
1118	mutex_destroy(&sc->sc_intr_lock);
1119
1120	return 0;
1121}
1122
1123static uint16_t
1124esa_read_assp(struct esa_softc *sc, uint16_t region, uint16_t index)
1125{
1126	uint16_t data;
1127	bus_space_tag_t iot;
1128	bus_space_handle_t ioh;
1129
1130	iot = sc->sc_iot;
1131	ioh = sc->sc_ioh;
1132	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
1133	    region & ESA_MEMTYPE_MASK);
1134	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
1135	data = bus_space_read_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA);
1136
1137	return data;
1138}
1139
1140static void
1141esa_write_assp(struct esa_softc *sc, uint16_t region, uint16_t index,
1142	       uint16_t data)
1143{
1144	bus_space_tag_t iot;
1145	bus_space_handle_t ioh;
1146
1147	iot = sc->sc_iot;
1148	ioh = sc->sc_ioh;
1149	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
1150	    region & ESA_MEMTYPE_MASK);
1151	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
1152	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA, data);
1153
1154	return;
1155}
1156
1157static int
1158esa_init_codec(struct esa_softc *sc)
1159{
1160	bus_space_tag_t iot;
1161	bus_space_handle_t ioh;
1162	uint32_t data;
1163
1164	iot = sc->sc_iot;
1165	ioh = sc->sc_ioh;
1166	data = bus_space_read_1(iot, ioh, ESA_CODEC_COMMAND);
1167
1168	return (data & 0x1) ? 0 : 1;
1169}
1170
1171static int
1172esa_attach_codec(void *aux, struct ac97_codec_if *codec_if)
1173{
1174	struct esa_softc *sc;
1175
1176	sc = aux;
1177	sc->codec_if = codec_if;
1178
1179	return 0;
1180}
1181
1182static int
1183esa_read_codec(void *aux, uint8_t reg, uint16_t *result)
1184{
1185	struct esa_softc *sc;
1186	bus_space_tag_t iot;
1187	bus_space_handle_t ioh;
1188
1189	sc = aux;
1190	iot = sc->sc_iot;
1191	ioh = sc->sc_ioh;
1192	if (esa_wait(sc))
1193		aprint_error_dev(sc->sc_dev, "esa_read_codec: timed out\n");
1194	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, (reg & 0x7f) | 0x80);
1195	delay(50);
1196	if (esa_wait(sc))
1197		aprint_error_dev(sc->sc_dev, "esa_read_codec: timed out\n");
1198	*result = bus_space_read_2(iot, ioh, ESA_CODEC_DATA);
1199
1200	return 0;
1201}
1202
1203static int
1204esa_write_codec(void *aux, uint8_t reg, uint16_t data)
1205{
1206	struct esa_softc *sc;
1207	bus_space_tag_t iot;
1208	bus_space_handle_t ioh;
1209
1210	sc = aux;
1211	iot = sc->sc_iot;
1212	ioh = sc->sc_ioh;
1213	if (esa_wait(sc)) {
1214		aprint_error_dev(sc->sc_dev, "esa_write_codec: timed out\n");
1215		return -1;
1216	}
1217	bus_space_write_2(iot, ioh, ESA_CODEC_DATA, data);
1218	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, reg & 0x7f);
1219	delay(50);
1220
1221	return 0;
1222}
1223
1224static int
1225esa_reset_codec(void *aux)
1226{
1227
1228	return 0;
1229}
1230
1231static enum ac97_host_flags
1232esa_flags_codec(void *aux)
1233{
1234	struct esa_softc *sc;
1235
1236	sc = aux;
1237	return sc->codec_flags;
1238}
1239
1240static int
1241esa_wait(struct esa_softc *sc)
1242{
1243	int i, val;
1244	bus_space_tag_t iot;
1245	bus_space_handle_t ioh;
1246
1247	iot = sc->sc_iot;
1248	ioh = sc->sc_ioh;
1249	for (i = 0; i < 20; i++) {
1250		val = bus_space_read_1(iot, ioh, ESA_CODEC_STATUS);
1251		if ((val & 1) == 0)
1252			return 0;
1253		delay(2);
1254	}
1255
1256	return -1;
1257}
1258
1259static int
1260esa_init(struct esa_softc *sc)
1261{
1262	struct esa_voice *vc;
1263	bus_space_tag_t iot;
1264	bus_space_handle_t ioh;
1265	pcitag_t tag;
1266	pci_chipset_tag_t pc;
1267	uint32_t data, i, size;
1268	uint8_t reset_state;
1269	int data_bytes;
1270
1271	iot = sc->sc_iot;
1272	ioh = sc->sc_ioh;
1273	tag = sc->sc_tag;
1274	pc = sc->sc_pct;
1275	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
1276	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
1277	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
1278
1279	mutex_spin_enter(&sc->sc_intr_lock);
1280
1281	/* Disable legacy emulation */
1282	data = pci_conf_read(pc, tag, PCI_LEGACY_AUDIO_CTRL);
1283	data |= DISABLE_LEGACY;
1284	pci_conf_write(pc, tag, PCI_LEGACY_AUDIO_CTRL, data);
1285
1286	esa_config(sc);
1287
1288	reset_state = esa_assp_halt(sc);
1289
1290	esa_init_codec(sc);
1291	esa_codec_reset(sc);
1292
1293	/* Zero kernel and mixer data */
1294	size = ESA_REV_B_DATA_MEMORY_UNIT_LENGTH * ESA_NUM_UNITS_KERNEL_DATA;
1295	for (i = 0; i < size / 2; i++) {
1296		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1297		    ESA_KDATA_BASE_ADDR + i, 0);
1298		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1299		    ESA_KDATA_BASE_ADDR2 + i, 0);
1300	}
1301
1302	/* Init DMA pointer */
1303	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_CURRENT_DMA,
1304	    ESA_KDATA_DMA_XFER0);
1305
1306	/* Write kernel code into memory */
1307	for (i = 0; i < __arraycount(esa_assp_kernel_image); i++)
1308		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
1309		    ESA_REV_B_CODE_MEMORY_BEGIN + i, esa_assp_kernel_image[i]);
1310
1311	for (i = 0; i < __arraycount(esa_assp_minisrc_image); i++)
1312		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, 0x400 + i,
1313		    esa_assp_minisrc_image[i]);
1314
1315	/* Write the coefficients for the low pass filter */
1316	for (i = 0; i < __arraycount(esa_minisrc_lpf_image); i++)
1317		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
1318		    0x400 + ESA_MINISRC_COEF_LOC + i,
1319		    esa_minisrc_lpf_image[i]);
1320	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
1321	    0x400 + ESA_MINISRC_COEF_LOC + size, 0x8000);
1322	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_TASK0, 0x400);
1323	/* Init the mixer number */
1324	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1325	     ESA_KDATA_MIXER_TASK_NUMBER, 0);
1326	/* Extreme kernel master volume */
1327	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1328	    ESA_KDATA_DAC_LEFT_VOLUME, ESA_ARB_VOLUME);
1329	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1330	    ESA_KDATA_DAC_RIGHT_VOLUME, ESA_ARB_VOLUME);
1331
1332	if (esa_amp_enable(sc))
1333		return -1;
1334
1335	/* Zero entire DAC/ADC area */
1336	for (i = 0x1100; i < 0x1c00; i++)
1337		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i, 0);
1338
1339	/* set some sane defaults */
1340	for (i = 0; i < ESA_NUM_VOICES; i++) {
1341		vc = &sc->voice[i];
1342		vc->play.data_offset = ESA_DAC_DATA + (data_bytes * i);
1343		vc->rec.data_offset = ESA_DAC_DATA + (data_bytes * i * 2);
1344	}
1345
1346	esa_enable_interrupts(sc);
1347
1348	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
1349	    reset_state | ESA_REGB_ENABLE_RESET);
1350
1351	mutex_spin_exit(&sc->sc_intr_lock);
1352
1353	return 0;
1354}
1355
1356static void
1357esa_config(struct esa_softc *sc)
1358{
1359	bus_space_tag_t iot;
1360	bus_space_handle_t ioh;
1361	pcitag_t tag;
1362	pci_chipset_tag_t pc;
1363	uint32_t data;
1364
1365	iot = sc->sc_iot;
1366	ioh = sc->sc_ioh;
1367	tag = sc->sc_tag;
1368	pc = sc->sc_pct;
1369
1370	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
1371	data &= ESA_REDUCED_DEBOUNCE;
1372	data |= ESA_PM_CTRL_ENABLE | ESA_CLK_DIV_BY_49 | ESA_USE_PCI_TIMING;
1373	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
1374
1375	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RESET_ASSP);
1376	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
1377	data &= ~ESA_INT_CLK_SELECT;
1378	if (sc->type == ESS_MAESTRO3) {
1379		data &= ~ESA_INT_CLK_MULT_ENABLE;
1380		data |= ESA_INT_CLK_SRC_NOT_PCI;
1381	}
1382	data &= ~(ESA_CLK_MULT_MODE_SELECT | ESA_CLK_MULT_MODE_SELECT_2);
1383	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
1384
1385	if (sc->type == ESS_ALLEGRO1) {
1386		data = pci_conf_read(pc, tag, ESA_PCI_USER_CONFIG);
1387		data |= ESA_IN_CLK_12MHZ_SELECT;
1388		pci_conf_write(pc, tag, ESA_PCI_USER_CONFIG, data);
1389	}
1390
1391	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_A);
1392	data &= ~(ESA_DSP_CLK_36MHZ_SELECT | ESA_ASSP_CLK_49MHZ_SELECT);
1393	data |= ESA_ASSP_CLK_49MHZ_SELECT;	/* XXX: Assumes 49MHz DSP */
1394	data |= ESA_ASSP_0_WS_ENABLE;
1395	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_A, data);
1396
1397	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RUN_ASSP);
1398
1399	return;
1400}
1401
1402static uint8_t
1403esa_assp_halt(struct esa_softc *sc)
1404{
1405	bus_space_tag_t iot;
1406	bus_space_handle_t ioh;
1407	uint8_t data, reset_state;
1408
1409	iot = sc->sc_iot;
1410	ioh = sc->sc_ioh;
1411	data = bus_space_read_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B);
1412	reset_state = data & ~ESA_REGB_STOP_CLOCK;
1413	delay(10000);
1414	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
1415			reset_state & ~ESA_REGB_ENABLE_RESET);
1416	delay(10000);
1417
1418	return reset_state;
1419}
1420
1421static void
1422esa_codec_reset(struct esa_softc *sc)
1423{
1424	bus_space_tag_t iot;
1425	bus_space_handle_t ioh;
1426	uint16_t data, dir;
1427	int retry;
1428
1429	iot = sc->sc_iot;
1430	ioh = sc->sc_ioh;
1431	retry = 0;
1432	do {
1433		data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
1434		dir = data | 0x10; /* assuming pci bus master? */
1435
1436		/* remote codec config */
1437		data = bus_space_read_2(iot, ioh, ESA_RING_BUS_CTRL_B);
1438		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_B,
1439		    data & ~ESA_SECOND_CODEC_ID_MASK);
1440		data = bus_space_read_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL);
1441		bus_space_write_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL,
1442		    data & ~ESA_COMMAND_ADDR_OUT);
1443		data = bus_space_read_2(iot, ioh, ESA_SDO_IN_DEST_CTRL);
1444		bus_space_write_2(iot, ioh, ESA_SDO_IN_DEST_CTRL,
1445		    data & ~ESA_STATUS_ADDR_IN);
1446
1447		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
1448				  ESA_IO_SRAM_ENABLE);
1449		delay(20);
1450
1451		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
1452		    dir & ~ESA_GPO_PRIMARY_AC97);
1453		bus_space_write_2(iot, ioh, ESA_GPIO_MASK,
1454				  ~ESA_GPO_PRIMARY_AC97);
1455		bus_space_write_2(iot, ioh, ESA_GPIO_DATA, 0);
1456		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
1457		    dir | ESA_GPO_PRIMARY_AC97);
1458		delay(sc->delay1 * 1000);
1459		bus_space_write_2(iot, ioh, ESA_GPIO_DATA,
1460				  ESA_GPO_PRIMARY_AC97);
1461		delay(5);
1462		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
1463		    ESA_IO_SRAM_ENABLE | ESA_SERIAL_AC_LINK_ENABLE);
1464		bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
1465		delay(sc->delay2 * 1000);
1466
1467		esa_read_codec(sc, 0x7c, &data);
1468		if ((data == 0) || (data == 0xffff)) {
1469			retry++;
1470			if (retry > 3) {
1471				aprint_error_dev(sc->sc_dev,
1472				    "esa_codec_reset: failed\n");
1473				break;
1474			}
1475			aprint_normal_dev(sc->sc_dev,
1476			    "esa_codec_reset: retrying\n");
1477		} else
1478			retry = 0;
1479	} while (retry);
1480
1481	return;
1482}
1483
1484static int
1485esa_amp_enable(struct esa_softc *sc)
1486{
1487	bus_space_tag_t iot;
1488	bus_space_handle_t ioh;
1489	uint32_t gpo, polarity_port, polarity;
1490	uint16_t data;
1491
1492	iot = sc->sc_iot;
1493	ioh = sc->sc_ioh;
1494	switch (sc->type) {
1495	case ESS_ALLEGRO1:
1496		polarity_port = 0x1800;
1497		break;
1498	case ESS_MAESTRO3:
1499		polarity_port = 0x1100;
1500		break;
1501	default:
1502		aprint_error_dev(sc->sc_dev,
1503		    "esa_amp_enable: Unknown chip type!!!\n");
1504		return 1;
1505	}
1506
1507	gpo = (polarity_port >> 8) & 0x0f;
1508	polarity = polarity_port >> 12;
1509	polarity = !polarity;	/* Enable */
1510	polarity = polarity << gpo;
1511	gpo = 1 << gpo;
1512	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~gpo);
1513	data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
1514	bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION, data | gpo);
1515	data = ESA_GPO_SECONDARY_AC97 | ESA_GPO_PRIMARY_AC97 | polarity;
1516	bus_space_write_2(iot, ioh, ESA_GPIO_DATA, data);
1517	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
1518
1519	return 0;
1520}
1521
1522static void
1523esa_enable_interrupts(struct esa_softc *sc)
1524{
1525	bus_space_tag_t iot;
1526	bus_space_handle_t ioh;
1527	uint8_t data;
1528
1529	iot = sc->sc_iot;
1530	ioh = sc->sc_ioh;
1531	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
1532	    ESA_ASSP_INT_ENABLE | ESA_HV_INT_ENABLE);
1533	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_C);
1534	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C,
1535	    data | ESA_ASSP_HOST_INT_ENABLE);
1536}
1537
1538/*
1539 * List management
1540 */
1541static int
1542esa_add_list(struct esa_voice *vc, struct esa_list *el,
1543	     uint16_t val, int index)
1544{
1545	struct esa_softc *sc;
1546
1547	sc = device_private(vc->parent);
1548	el->indexmap[index] = el->currlen;
1549	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1550		       el->mem_addr + el->currlen,
1551		       val);
1552
1553	return el->currlen++;
1554}
1555
1556static void
1557esa_remove_list(struct esa_voice *vc, struct esa_list *el, int index)
1558{
1559	struct esa_softc *sc;
1560	uint16_t val;
1561	int lastindex;
1562	int vindex;
1563	int i;
1564
1565	sc = device_private(vc->parent);
1566	lastindex = el->currlen - 1;
1567	vindex = el->indexmap[index];
1568
1569	/* reset our virtual index */
1570	el->indexmap[index] = -1;
1571
1572	if (vindex != lastindex) {
1573		val = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1574				    el->mem_addr + lastindex);
1575		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1576			       el->mem_addr + vindex,
1577			       val);
1578		for (i = 0; i < ESA_NUM_VOICES * 2; i++)
1579			if (el->indexmap[i] == lastindex)
1580				break;
1581		if (i >= ESA_NUM_VOICES * 2)
1582			aprint_error_dev(sc->sc_dev,
1583			    "esa_remove_list: invalid task index\n");
1584		else
1585			el->indexmap[i] = vindex;
1586	}
1587
1588	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1589		       el->mem_addr + lastindex, 0);
1590	el->currlen--;
1591
1592	return;
1593}
1594
1595static bool
1596esa_suspend(device_t dv, const pmf_qual_t *qual)
1597{
1598	struct esa_softc *sc = device_private(dv);
1599	bus_space_tag_t iot = sc->sc_iot;
1600	bus_space_handle_t ioh = sc->sc_ioh;
1601	int i, index;
1602
1603	index = 0;
1604
1605	mutex_enter(&sc->sc_lock);
1606	mutex_spin_enter(&sc->sc_intr_lock);
1607
1608	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL, 0);
1609	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C, 0);
1610
1611	esa_assp_halt(sc);
1612
1613	/* Save ASSP state */
1614	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
1615	    i++)
1616		sc->savemem[index++] = esa_read_assp(sc,
1617		    ESA_MEMTYPE_INTERNAL_CODE, i);
1618	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
1619	    i++)
1620		sc->savemem[index++] = esa_read_assp(sc,
1621		    ESA_MEMTYPE_INTERNAL_DATA, i);
1622
1623	mutex_spin_exit(&sc->sc_intr_lock);
1624	mutex_exit(&sc->sc_lock);
1625
1626	return true;
1627}
1628
1629static bool
1630esa_resume(device_t dv, const pmf_qual_t *qual)
1631{
1632	struct esa_softc *sc = device_private(dv);
1633	bus_space_tag_t iot = sc->sc_iot;
1634	bus_space_handle_t ioh = sc->sc_ioh;
1635	int i, index;
1636	uint8_t reset_state;
1637	pcireg_t data;
1638
1639	index = 0;
1640
1641	delay(10000);
1642
1643	mutex_enter(&sc->sc_lock);
1644	mutex_spin_enter(&sc->sc_intr_lock);
1645
1646	data = pci_conf_read(sc->sc_pct, sc->sc_tag, PCI_LEGACY_AUDIO_CTRL);
1647	pci_conf_write(sc->sc_pct, sc->sc_tag, PCI_LEGACY_AUDIO_CTRL,
1648	    data | DISABLE_LEGACY);
1649
1650	bus_space_write_4(iot, ioh, ESA_PCI_ACPI_CONTROL, ESA_PCI_ACPI_D0);
1651
1652	esa_config(sc);
1653
1654	reset_state = esa_assp_halt(sc);
1655
1656	esa_init_codec(sc);
1657	esa_codec_reset(sc);
1658
1659	/* restore ASSP */
1660	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
1661	    i++)
1662		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, i,
1663		    sc->savemem[index++]);
1664	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
1665	    i++)
1666		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i,
1667		    sc->savemem[index++]);
1668
1669	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_DMA_ACTIVE, 0);
1670	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
1671	    reset_state | ESA_REGB_ENABLE_RESET);
1672
1673	esa_enable_interrupts(sc);
1674	esa_amp_enable(sc);
1675
1676	mutex_spin_exit(&sc->sc_intr_lock);
1677
1678	/* Finally, power up AC97 codec */
1679	delay(1000);
1680
1681	sc->codec_if->vtbl->restore_ports(sc->codec_if);
1682
1683	mutex_exit(&sc->sc_lock);
1684
1685	return true;
1686}
1687
1688static uint32_t
1689esa_get_pointer(struct esa_softc *sc, struct esa_channel *ch)
1690{
1691	uint16_t hi, lo;
1692	uint32_t addr;
1693	int data_offset;
1694
1695	data_offset = ch->data_offset;
1696	hi = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
1697	    ESA_CDATA_HOST_SRC_CURRENTH);
1698	lo = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
1699	    ESA_CDATA_HOST_SRC_CURRENTL);
1700
1701	addr = lo | ((uint32_t)hi << 16);
1702	return (addr - ch->start);
1703}
1704
1705static void
1706esa_get_locks(void *addr, kmutex_t **intr, kmutex_t **proc)
1707{
1708	struct esa_voice *vc;
1709	struct esa_softc *sc;
1710
1711	vc = addr;
1712	sc = device_private(vc->parent);
1713
1714	*intr = &sc->sc_intr_lock;
1715	*proc = &sc->sc_lock;
1716}
1717