esa.c revision 1.66
1/* $NetBSD: esa.c,v 1.66 2023/05/10 00:11:49 riastradh 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 1.66 2023/05/10 00:11:49 riastradh 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_PLAYBACK | AUDIO_PROP_CAPTURE |
479	    AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
480}
481
482static int
483esa_trigger_output(void *hdl, void *start, void *end, int blksize,
484    void (*intr)(void *), void *intrarg, const audio_params_t *param)
485{
486	struct esa_voice *vc;
487	struct esa_softc *sc;
488	struct esa_dma *p;
489	bus_space_tag_t iot;
490	bus_space_handle_t ioh;
491	size_t size;
492	uint32_t data, bufaddr, i;
493	int data_bytes, dac_data, dsp_in_size;
494	int dsp_out_size, dsp_in_buf, dsp_out_buf;
495
496	vc = hdl;
497	sc = device_private(vc->parent);
498	iot = sc->sc_iot;
499	ioh = sc->sc_ioh;
500	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
501	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
502	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
503	dac_data = ESA_DAC_DATA + (data_bytes * vc->index);
504	dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x20 * 2);
505	dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x20 * 2);
506	dsp_in_buf = dac_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
507	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
508
509	if (vc->play.active)
510		return EINVAL;
511
512	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
513		continue;
514	if (p == NULL) {
515		aprint_error_dev(sc->sc_dev, "%s: bad addr %p\n", __func__,
516		    start);
517		return EINVAL;
518	}
519
520	vc->play.active = 1;
521	vc->play.intr = intr;
522	vc->play.arg = intrarg;
523	vc->play.pos = 0;
524	vc->play.count = 0;
525	vc->play.buf = start;
526	vc->play.bufsize = size = (size_t)(((char *)end - (char *)start));
527	vc->play.blksize = blksize;
528	bufaddr = DMAADDR(p);
529	vc->play.start = bufaddr;
530
531#define LO(x) ((x) & 0x0000ffff)
532#define HI(x) ((x) >> 16)
533
534	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
535	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
536	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
537	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
538	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
539	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
540	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
541	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
542	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
543	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
544	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
545	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
546
547	/* DSP buffers */
548	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
549	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
550	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
551	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
552	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
553	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
554	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
555	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
556	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
557	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
558	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
559	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
560	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
561	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
562	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
563	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
564
565	/* Some per-client initializers */
566	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
567	    ESA_SRC3_DIRECTION_OFFSET + 12, dac_data + 40 + 8);
568	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
569	    ESA_SRC3_DIRECTION_OFFSET + 19, 0x400 + ESA_MINISRC_COEF_LOC);
570	/* Enable or disable low-pass filter? (0xff if rate > 45000) */
571	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
572	    ESA_SRC3_DIRECTION_OFFSET + 22,
573	    vc->play.mode.sample_rate > 45000 ? 0xff : 0);
574	/* Tell it which way DMA is going */
575	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
576	    ESA_CDATA_DMA_CONTROL,
577	    ESA_DMACONTROL_AUTOREPEAT + ESA_DMAC_PAGE3_SELECTOR +
578	    ESA_DMAC_BLOCKF_SELECTOR);
579
580	/* Set an armload of static initializers */
581	for (i = 0; i < __arraycount(esa_playvals); i++)
582		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
583		    esa_playvals[i].addr, esa_playvals[i].val);
584
585	/* Put us in the packed task lists */
586	esa_add_list(vc, &sc->msrc_list, dac_data >> ESA_DP_SHIFT_COUNT,
587		     vc->index);
588	esa_add_list(vc, &sc->dma_list, dac_data >> ESA_DP_SHIFT_COUNT,
589		     vc->index);
590	esa_add_list(vc, &sc->mixer_list, dac_data >> ESA_DP_SHIFT_COUNT,
591		     vc->index);
592#undef LO
593#undef HI
594
595	sc->sc_ntimers++;
596
597	if (sc->sc_ntimers == 1) {
598		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
599		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
600		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
601		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
602		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
603		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
604		    data | ESA_CLKRUN_GEN_ENABLE);
605	}
606
607	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
608	    ESA_CDATA_INSTANCE_READY, 1);
609	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
610	    ESA_KDATA_MIXER_TASK_NUMBER,
611	    sc->mixer_list.indexmap[vc->index]);
612
613	return 0;
614}
615
616static int
617esa_trigger_input(void *hdl, void *start, void *end, int blksize,
618    void (*intr)(void *), void *intrarg, const audio_params_t *param)
619{
620	struct esa_voice *vc;
621	struct esa_softc *sc;
622	struct esa_dma *p;
623	bus_space_tag_t iot;
624	bus_space_handle_t ioh;
625	uint32_t data, bufaddr, i;
626	size_t size;
627	int data_bytes, adc_data, dsp_in_size;
628	int dsp_out_size, dsp_in_buf, dsp_out_buf;
629
630	vc = hdl;
631	sc = device_private(vc->parent);
632	iot = sc->sc_iot;
633	ioh = sc->sc_ioh;
634	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
635	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
636	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
637	adc_data = ESA_DAC_DATA + (data_bytes * vc->index) + (data_bytes / 2);
638	dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x10 * 2);
639	dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x10 * 2);
640	dsp_in_buf = adc_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
641	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
642
643	vc->rec.data_offset = adc_data;
644
645	/* We only support 1 recording channel */
646	if (vc->index > 0)
647		return ENODEV;
648
649	if (vc->rec.active)
650		return EINVAL;
651
652	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
653		continue;
654	if (p == NULL) {
655		aprint_error_dev(sc->sc_dev, "%s: bad addr %p\n",
656		    __func__, start);
657		return EINVAL;
658	}
659
660	vc->rec.active = 1;
661	vc->rec.intr = intr;
662	vc->rec.arg = intrarg;
663	vc->rec.pos = 0;
664	vc->rec.count = 0;
665	vc->rec.buf = start;
666	vc->rec.bufsize = size = (size_t)(((char *)end - (char *)start));
667	vc->rec.blksize = blksize;
668	bufaddr = DMAADDR(p);
669	vc->rec.start = bufaddr;
670
671#define LO(x) ((x) & 0x0000ffff)
672#define HI(x) ((x) >> 16)
673
674	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
675	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
676	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
677	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
678	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
679	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
680	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
681	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
682	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
683	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
684	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
685	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
686
687	/* DSP buffers */
688	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
689	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
690	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
691	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
692	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
693	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
694	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
695	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
696	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
697	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
698	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
699	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
700	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
701	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
702	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
703	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
704
705	/* Some per-client initializers */
706	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
707	    ESA_SRC3_DIRECTION_OFFSET + 12, adc_data + 40 + 8);
708	/* Tell it which way DMA is going */
709	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
710	    ESA_CDATA_DMA_CONTROL,
711	    ESA_DMACONTROL_DIRECTION + ESA_DMACONTROL_AUTOREPEAT +
712	    ESA_DMAC_PAGE3_SELECTOR + ESA_DMAC_BLOCKF_SELECTOR);
713
714	/* Set an armload of static initializers */
715	for (i = 0; i < __arraycount(esa_recvals); i++)
716		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
717		    esa_recvals[i].addr, esa_recvals[i].val);
718
719	/* Put us in the packed task lists */
720	esa_add_list(vc, &sc->adc1_list, adc_data >> ESA_DP_SHIFT_COUNT,
721		     vc->index + ESA_NUM_VOICES);
722	esa_add_list(vc, &sc->msrc_list, adc_data >> ESA_DP_SHIFT_COUNT,
723		     vc->index + ESA_NUM_VOICES);
724	esa_add_list(vc, &sc->dma_list, adc_data >> ESA_DP_SHIFT_COUNT,
725		     vc->index + ESA_NUM_VOICES);
726#undef LO
727#undef HI
728
729	sc->sc_ntimers++;
730	if (sc->sc_ntimers == 1) {
731		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
732		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
733		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
734		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
735		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
736		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
737		    data | ESA_CLKRUN_GEN_ENABLE);
738	}
739
740	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
741	    ESA_CDATA_INSTANCE_READY, 1);
742	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_ADC1_REQUEST,
743	    1);
744
745	return 0;
746}
747
748/* Interrupt handler */
749static int
750esa_intr(void *hdl)
751{
752	struct esa_softc *sc;
753	struct esa_voice *vc;
754	bus_space_tag_t iot;
755	bus_space_handle_t ioh;
756	uint8_t status;
757	uint32_t pos;
758	uint32_t diff;
759	uint32_t blksize;
760	int i;
761
762	sc = hdl;
763	mutex_spin_enter(&sc->sc_intr_lock);
764
765	iot = sc->sc_iot;
766	ioh = sc->sc_ioh;
767
768	status = bus_space_read_1(iot, ioh, ESA_HOST_INT_STATUS);
769	if (status == 0xff) {
770		mutex_spin_exit(&sc->sc_intr_lock);
771		return 0;
772	}
773
774	/* ack the interrupt */
775	bus_space_write_1(iot, ioh, ESA_HOST_INT_STATUS, status);
776
777	if (status & ESA_HV_INT_PENDING) {
778		uint8_t event;
779
780		aprint_normal_dev(sc->sc_dev, "hardware volume interrupt\n");
781		event = bus_space_read_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER);
782		switch(event) {
783		case 0xaa:	/* volume up */
784			pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_UP);
785			break;
786		case 0x66:	/* volume down */
787			pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_DOWN);
788			break;
789		case 0x88:	/* mute */
790			pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_TOGGLE);
791			break;
792		default:
793			aprint_normal_dev(sc->sc_dev,
794			    "unknown hwvol event 0x%02x\n", event);
795			break;
796		}
797		bus_space_write_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER, 0x88);
798	}
799
800	if ((status & ESA_ASSP_INT_PENDING) == 0 ||
801	    (bus_space_read_1(iot, ioh,
802	     ESA_ASSP_CONTROL_B) & ESA_STOP_ASSP_CLOCK) != 0 ||
803	    (bus_space_read_1(iot, ioh,
804	     ESA_ASSP_HOST_INT_STATUS) & ESA_DSP2HOST_REQ_TIMER) == 0) {
805		mutex_spin_exit(&sc->sc_intr_lock);
806		return 1;
807	}
808
809	bus_space_write_1(iot, ioh, ESA_ASSP_HOST_INT_STATUS,
810	    ESA_DSP2HOST_REQ_TIMER);
811
812	for (i = 0; i < ESA_NUM_VOICES; i++) {
813		vc = &sc->voice[i];
814
815		if (vc->play.active) {
816			pos = esa_get_pointer(sc, &vc->play) % vc->play.bufsize;
817			diff = (vc->play.bufsize + pos - vc->play.pos) %
818			    vc->play.bufsize;
819
820			vc->play.pos = pos;
821			vc->play.count += diff;
822			blksize = vc->play.blksize;
823
824			while (vc->play.count >= blksize) {
825				vc->play.count -= blksize;
826				(*vc->play.intr)(vc->play.arg);
827			}
828		}
829
830		if (vc->rec.active) {
831			pos = esa_get_pointer(sc, &vc->rec) % vc->rec.bufsize;
832			diff = (vc->rec.bufsize + pos - vc->rec.pos) %
833			    vc->rec.bufsize;
834
835			vc->rec.pos = pos;
836			vc->rec.count += diff;
837			blksize = vc->rec.blksize;
838
839			while (vc->rec.count >= blksize) {
840				vc->rec.count -= blksize;
841				(*vc->rec.intr)(vc->rec.arg);
842			}
843		}
844	}
845
846	mutex_spin_exit(&sc->sc_intr_lock);
847	return 1;
848}
849
850static int
851esa_allocmem(struct esa_softc *sc, size_t size, size_t align,
852	     struct esa_dma *p)
853{
854	int error;
855
856	p->size = size;
857	error = bus_dmamem_alloc(sc->sc_dmat, p->size, align, 0,
858				 p->segs, __arraycount(p->segs),
859				 &p->nsegs, BUS_DMA_WAITOK);
860	if (error)
861		return error;
862
863	error = bus_dmamem_map(sc->sc_dmat, p->segs, p->nsegs, p->size,
864				&p->addr, BUS_DMA_WAITOK | BUS_DMA_COHERENT);
865	if (error)
866		goto free;
867
868	error = bus_dmamap_create(sc->sc_dmat, p->size, 1, p->size, 0,
869				  BUS_DMA_WAITOK, &p->map);
870	if (error)
871		goto unmap;
872
873	error = bus_dmamap_load(sc->sc_dmat, p->map, p->addr, p->size, NULL,
874				BUS_DMA_WAITOK);
875	if (error)
876		goto destroy;
877
878	return 0;
879
880destroy:
881	bus_dmamap_destroy(sc->sc_dmat, p->map);
882unmap:
883	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
884free:
885	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
886
887	return error;
888}
889
890static int
891esa_freemem(struct esa_softc *sc, struct esa_dma *p)
892{
893
894	bus_dmamap_unload(sc->sc_dmat, p->map);
895	bus_dmamap_destroy(sc->sc_dmat, p->map);
896	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
897	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
898
899	return 0;
900}
901
902/*
903 * Supporting Subroutines
904 */
905
906static int
907esa_match(device_t dev, cfdata_t match, void *aux)
908{
909	struct pci_attach_args *pa;
910
911	pa = (struct pci_attach_args *)aux;
912	switch (PCI_VENDOR(pa->pa_id)) {
913	case PCI_VENDOR_ESSTECH:
914		switch(PCI_PRODUCT(pa->pa_id)) {
915		case PCI_PRODUCT_ESSTECH_ALLEGRO1:
916		case PCI_PRODUCT_ESSTECH_MAESTRO3:
917		case PCI_PRODUCT_ESSTECH_MAESTRO3_2:
918			return 1;
919		}
920	}
921
922	return 0;
923}
924
925static void
926esa_attach(device_t parent, device_t self, void *aux)
927{
928	struct esa_softc *sc;
929	struct pci_attach_args *pa;
930	pcitag_t tag;
931	pci_chipset_tag_t pc;
932	pci_intr_handle_t ih;
933	const struct esa_card_type *card;
934	const char *intrstr;
935	uint32_t data;
936	int revision, i, error;
937	char intrbuf[PCI_INTRSTR_LEN];
938
939	sc = device_private(self);
940	pa = (struct pci_attach_args *)aux;
941	tag = pa->pa_tag;
942	pc = pa->pa_pc;
943
944	pci_aprint_devinfo(pa, "Audio controller");
945
946	revision = PCI_REVISION(pa->pa_class);
947
948	for (card = esa_card_types; card->pci_vendor_id; card++)
949		if (PCI_VENDOR(pa->pa_id) == card->pci_vendor_id &&
950		    PCI_PRODUCT(pa->pa_id) == card->pci_product_id) {
951			sc->type = card->type;
952			sc->delay1 = card->delay1;
953			sc->delay2 = card->delay2;
954			break;
955		}
956
957	data = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
958	data |= (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE
959	    | PCI_COMMAND_MASTER_ENABLE);
960	pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, data);
961
962	/* Map I/O register */
963	if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
964	    &sc->sc_iot, &sc->sc_ioh, &sc->sc_iob, &sc->sc_ios)) {
965		aprint_error_dev(sc->sc_dev, "can't map i/o space\n");
966		return;
967	}
968
969	/* Initialize softc */
970	sc->sc_dev = self;
971	sc->sc_tag = tag;
972	sc->sc_pct = pc;
973	sc->sc_dmat = pa->pa_dmat;
974
975	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
976	mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO);
977
978	/* Map and establish an interrupt */
979	if (pci_intr_map(pa, &ih)) {
980		aprint_error_dev(sc->sc_dev, "can't map interrupt\n");
981		mutex_destroy(&sc->sc_lock);
982		mutex_destroy(&sc->sc_intr_lock);
983		return;
984	}
985	intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf));
986	sc->sc_ih = pci_intr_establish_xname(pc, ih, IPL_AUDIO, esa_intr, sc,
987	    device_xname(self));
988	if (sc->sc_ih == NULL) {
989		aprint_error_dev(sc->sc_dev, "can't establish interrupt");
990		if (intrstr != NULL)
991			aprint_error(" at %s", intrstr);
992		aprint_error("\n");
993		mutex_destroy(&sc->sc_lock);
994		mutex_destroy(&sc->sc_intr_lock);
995		return;
996	}
997	aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
998
999	/* power up chip */
1000	if ((error = pci_activate(pa->pa_pc, pa->pa_tag, self,
1001	    pci_activate_null)) && error != EOPNOTSUPP) {
1002		aprint_error_dev(sc->sc_dev, "cannot activate %d\n", error);
1003		mutex_destroy(&sc->sc_lock);
1004		mutex_destroy(&sc->sc_intr_lock);
1005		return;
1006	}
1007
1008	/* Init chip */
1009	if (esa_init(sc) == -1) {
1010		aprint_error_dev(sc->sc_dev,
1011		    "esa_attach: unable to initialize the card\n");
1012		mutex_destroy(&sc->sc_lock);
1013		mutex_destroy(&sc->sc_intr_lock);
1014		return;
1015	}
1016
1017	/* create suspend save area */
1018	sc->savememsz = sizeof(uint16_t) * (ESA_REV_B_CODE_MEMORY_LENGTH
1019	    + ESA_REV_B_DATA_MEMORY_LENGTH + 1);
1020	sc->savemem = kmem_zalloc(sc->savememsz, KM_SLEEP);
1021
1022	/*
1023	 * Every card I've seen has had their channels swapped with respect
1024	 * to the mixer. Ie:
1025	 *  $ mixerctl -w outputs.master=0,191
1026	 * Would result in the _right_ speaker being turned off.
1027	 *
1028	 * So, we will swap the left and right mixer channels to compensate
1029	 * for this.
1030	 *
1031	 * XXX PR# 23620: The Dell C810 channels are not swapped. Match
1032	 *     on revision ID for now; this is probably wrong.
1033	 */
1034	if (revision == 0x10 && sc->type == ESS_MAESTRO3)
1035		sc->codec_flags = 0;
1036	else
1037		sc->codec_flags = AC97_HOST_SWAPPED_CHANNELS;
1038
1039	/* initialize list management structures */
1040	sc->mixer_list.mem_addr = ESA_KDATA_MIXER_XFER0;
1041	sc->mixer_list.max = ESA_MAX_VIRTUAL_MIXER_CHANNELS;
1042	sc->adc1_list.mem_addr = ESA_KDATA_ADC1_XFER0;
1043	sc->adc1_list.max = ESA_MAX_VIRTUAL_ADC1_CHANNELS;
1044	sc->dma_list.mem_addr = ESA_KDATA_DMA_XFER0;
1045	sc->dma_list.max = ESA_MAX_VIRTUAL_DMA_CHANNELS;
1046	sc->msrc_list.mem_addr = ESA_KDATA_INSTANCE0_MINISRC;
1047	sc->msrc_list.max = ESA_MAX_INSTANCE_MINISRC;
1048
1049	/* initialize index maps */
1050	for (i = 0; i < ESA_NUM_VOICES * 2; i++) {
1051		sc->mixer_list.indexmap[i] = -1;
1052		sc->msrc_list.indexmap[i] = -1;
1053		sc->dma_list.indexmap[i] = -1;
1054		sc->adc1_list.indexmap[i] = -1;
1055	}
1056
1057	/* Attach AC97 host interface */
1058	sc->host_if.arg = sc;
1059	sc->host_if.attach = esa_attach_codec;
1060	sc->host_if.read = esa_read_codec;
1061	sc->host_if.write = esa_write_codec;
1062	sc->host_if.reset = esa_reset_codec;
1063	sc->host_if.flags = esa_flags_codec;
1064
1065	if (ac97_attach(&sc->host_if, self, &sc->sc_lock) != 0) {
1066		mutex_destroy(&sc->sc_lock);
1067		mutex_destroy(&sc->sc_intr_lock);
1068		return;
1069	}
1070
1071	/* Attach audio interface. */
1072	for (i = 0; i < ESA_NUM_VOICES; i++) {
1073		sc->voice[i].parent = sc->sc_dev;
1074		sc->voice[i].index = i;
1075		sc->sc_audiodev[i] =
1076		    audio_attach_mi(&esa_hw_if, &sc->voice[i], sc->sc_dev);
1077	}
1078
1079	if (!pmf_device_register(self, esa_suspend, esa_resume))
1080		aprint_error_dev(self, "couldn't establish power handler\n");
1081
1082	return;
1083}
1084
1085void
1086esa_childdet(device_t self, device_t child)
1087{
1088	struct esa_softc *sc = device_private(self);
1089	int i;
1090
1091	for (i = 0; i < ESA_NUM_VOICES; i++) {
1092		if (sc->sc_audiodev[i] == child) {
1093			sc->sc_audiodev[i] = NULL;
1094			break;
1095		}
1096	}
1097	KASSERT(i < ESA_NUM_VOICES);
1098}
1099
1100static int
1101esa_detach(device_t self, int flags)
1102{
1103	struct esa_softc *sc = device_private(self);
1104	int error;
1105
1106	error = config_detach_children(self, flags);
1107	if (error)
1108		return error;
1109
1110	if (sc->sc_ih != NULL)
1111		pci_intr_disestablish(sc->sc_pct, sc->sc_ih);
1112	if (sc->sc_ios)
1113		bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
1114
1115	kmem_free(sc->savemem, sc->savememsz);
1116	mutex_destroy(&sc->sc_lock);
1117	mutex_destroy(&sc->sc_intr_lock);
1118
1119	return 0;
1120}
1121
1122static uint16_t
1123esa_read_assp(struct esa_softc *sc, uint16_t region, uint16_t index)
1124{
1125	uint16_t data;
1126	bus_space_tag_t iot;
1127	bus_space_handle_t ioh;
1128
1129	iot = sc->sc_iot;
1130	ioh = sc->sc_ioh;
1131	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
1132	    region & ESA_MEMTYPE_MASK);
1133	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
1134	data = bus_space_read_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA);
1135
1136	return data;
1137}
1138
1139static void
1140esa_write_assp(struct esa_softc *sc, uint16_t region, uint16_t index,
1141	       uint16_t data)
1142{
1143	bus_space_tag_t iot;
1144	bus_space_handle_t ioh;
1145
1146	iot = sc->sc_iot;
1147	ioh = sc->sc_ioh;
1148	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
1149	    region & ESA_MEMTYPE_MASK);
1150	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
1151	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA, data);
1152
1153	return;
1154}
1155
1156static int
1157esa_init_codec(struct esa_softc *sc)
1158{
1159	bus_space_tag_t iot;
1160	bus_space_handle_t ioh;
1161	uint32_t data;
1162
1163	iot = sc->sc_iot;
1164	ioh = sc->sc_ioh;
1165	data = bus_space_read_1(iot, ioh, ESA_CODEC_COMMAND);
1166
1167	return (data & 0x1) ? 0 : 1;
1168}
1169
1170static int
1171esa_attach_codec(void *aux, struct ac97_codec_if *codec_if)
1172{
1173	struct esa_softc *sc;
1174
1175	sc = aux;
1176	sc->codec_if = codec_if;
1177
1178	return 0;
1179}
1180
1181static int
1182esa_read_codec(void *aux, uint8_t reg, uint16_t *result)
1183{
1184	struct esa_softc *sc;
1185	bus_space_tag_t iot;
1186	bus_space_handle_t ioh;
1187
1188	sc = aux;
1189	iot = sc->sc_iot;
1190	ioh = sc->sc_ioh;
1191	if (esa_wait(sc))
1192		aprint_error_dev(sc->sc_dev, "esa_read_codec: timed out\n");
1193	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, (reg & 0x7f) | 0x80);
1194	delay(50);
1195	if (esa_wait(sc))
1196		aprint_error_dev(sc->sc_dev, "esa_read_codec: timed out\n");
1197	*result = bus_space_read_2(iot, ioh, ESA_CODEC_DATA);
1198
1199	return 0;
1200}
1201
1202static int
1203esa_write_codec(void *aux, uint8_t reg, uint16_t data)
1204{
1205	struct esa_softc *sc;
1206	bus_space_tag_t iot;
1207	bus_space_handle_t ioh;
1208
1209	sc = aux;
1210	iot = sc->sc_iot;
1211	ioh = sc->sc_ioh;
1212	if (esa_wait(sc)) {
1213		aprint_error_dev(sc->sc_dev, "esa_write_codec: timed out\n");
1214		return -1;
1215	}
1216	bus_space_write_2(iot, ioh, ESA_CODEC_DATA, data);
1217	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, reg & 0x7f);
1218	delay(50);
1219
1220	return 0;
1221}
1222
1223static int
1224esa_reset_codec(void *aux)
1225{
1226
1227	return 0;
1228}
1229
1230static enum ac97_host_flags
1231esa_flags_codec(void *aux)
1232{
1233	struct esa_softc *sc;
1234
1235	sc = aux;
1236	return sc->codec_flags;
1237}
1238
1239static int
1240esa_wait(struct esa_softc *sc)
1241{
1242	int i, val;
1243	bus_space_tag_t iot;
1244	bus_space_handle_t ioh;
1245
1246	iot = sc->sc_iot;
1247	ioh = sc->sc_ioh;
1248	for (i = 0; i < 20; i++) {
1249		val = bus_space_read_1(iot, ioh, ESA_CODEC_STATUS);
1250		if ((val & 1) == 0)
1251			return 0;
1252		delay(2);
1253	}
1254
1255	return -1;
1256}
1257
1258static int
1259esa_init(struct esa_softc *sc)
1260{
1261	struct esa_voice *vc;
1262	bus_space_tag_t iot;
1263	bus_space_handle_t ioh;
1264	pcitag_t tag;
1265	pci_chipset_tag_t pc;
1266	uint32_t data, i, size;
1267	uint8_t reset_state;
1268	int data_bytes;
1269
1270	iot = sc->sc_iot;
1271	ioh = sc->sc_ioh;
1272	tag = sc->sc_tag;
1273	pc = sc->sc_pct;
1274	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
1275	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
1276	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
1277
1278	mutex_spin_enter(&sc->sc_intr_lock);
1279
1280	/* Disable legacy emulation */
1281	data = pci_conf_read(pc, tag, PCI_LEGACY_AUDIO_CTRL);
1282	data |= DISABLE_LEGACY;
1283	pci_conf_write(pc, tag, PCI_LEGACY_AUDIO_CTRL, data);
1284
1285	esa_config(sc);
1286
1287	reset_state = esa_assp_halt(sc);
1288
1289	esa_init_codec(sc);
1290	esa_codec_reset(sc);
1291
1292	/* Zero kernel and mixer data */
1293	size = ESA_REV_B_DATA_MEMORY_UNIT_LENGTH * ESA_NUM_UNITS_KERNEL_DATA;
1294	for (i = 0; i < size / 2; i++) {
1295		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1296		    ESA_KDATA_BASE_ADDR + i, 0);
1297		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1298		    ESA_KDATA_BASE_ADDR2 + i, 0);
1299	}
1300
1301	/* Init DMA pointer */
1302	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_CURRENT_DMA,
1303	    ESA_KDATA_DMA_XFER0);
1304
1305	/* Write kernel code into memory */
1306	for (i = 0; i < __arraycount(esa_assp_kernel_image); i++)
1307		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
1308		    ESA_REV_B_CODE_MEMORY_BEGIN + i, esa_assp_kernel_image[i]);
1309
1310	for (i = 0; i < __arraycount(esa_assp_minisrc_image); i++)
1311		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, 0x400 + i,
1312		    esa_assp_minisrc_image[i]);
1313
1314	/* Write the coefficients for the low pass filter */
1315	for (i = 0; i < __arraycount(esa_minisrc_lpf_image); i++)
1316		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
1317		    0x400 + ESA_MINISRC_COEF_LOC + i,
1318		    esa_minisrc_lpf_image[i]);
1319	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
1320	    0x400 + ESA_MINISRC_COEF_LOC + size, 0x8000);
1321	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_TASK0, 0x400);
1322	/* Init the mixer number */
1323	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1324	     ESA_KDATA_MIXER_TASK_NUMBER, 0);
1325	/* Extreme kernel master volume */
1326	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1327	    ESA_KDATA_DAC_LEFT_VOLUME, ESA_ARB_VOLUME);
1328	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1329	    ESA_KDATA_DAC_RIGHT_VOLUME, ESA_ARB_VOLUME);
1330
1331	if (esa_amp_enable(sc))
1332		return -1;
1333
1334	/* Zero entire DAC/ADC area */
1335	for (i = 0x1100; i < 0x1c00; i++)
1336		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i, 0);
1337
1338	/* set some sane defaults */
1339	for (i = 0; i < ESA_NUM_VOICES; i++) {
1340		vc = &sc->voice[i];
1341		vc->play.data_offset = ESA_DAC_DATA + (data_bytes * i);
1342		vc->rec.data_offset = ESA_DAC_DATA + (data_bytes * i * 2);
1343	}
1344
1345	esa_enable_interrupts(sc);
1346
1347	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
1348	    reset_state | ESA_REGB_ENABLE_RESET);
1349
1350	mutex_spin_exit(&sc->sc_intr_lock);
1351
1352	return 0;
1353}
1354
1355static void
1356esa_config(struct esa_softc *sc)
1357{
1358	bus_space_tag_t iot;
1359	bus_space_handle_t ioh;
1360	pcitag_t tag;
1361	pci_chipset_tag_t pc;
1362	uint32_t data;
1363
1364	iot = sc->sc_iot;
1365	ioh = sc->sc_ioh;
1366	tag = sc->sc_tag;
1367	pc = sc->sc_pct;
1368
1369	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
1370	data &= ESA_REDUCED_DEBOUNCE;
1371	data |= ESA_PM_CTRL_ENABLE | ESA_CLK_DIV_BY_49 | ESA_USE_PCI_TIMING;
1372	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
1373
1374	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RESET_ASSP);
1375	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
1376	data &= ~ESA_INT_CLK_SELECT;
1377	if (sc->type == ESS_MAESTRO3) {
1378		data &= ~ESA_INT_CLK_MULT_ENABLE;
1379		data |= ESA_INT_CLK_SRC_NOT_PCI;
1380	}
1381	data &= ~(ESA_CLK_MULT_MODE_SELECT | ESA_CLK_MULT_MODE_SELECT_2);
1382	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
1383
1384	if (sc->type == ESS_ALLEGRO1) {
1385		data = pci_conf_read(pc, tag, ESA_PCI_USER_CONFIG);
1386		data |= ESA_IN_CLK_12MHZ_SELECT;
1387		pci_conf_write(pc, tag, ESA_PCI_USER_CONFIG, data);
1388	}
1389
1390	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_A);
1391	data &= ~(ESA_DSP_CLK_36MHZ_SELECT | ESA_ASSP_CLK_49MHZ_SELECT);
1392	data |= ESA_ASSP_CLK_49MHZ_SELECT;	/* XXX: Assumes 49MHz DSP */
1393	data |= ESA_ASSP_0_WS_ENABLE;
1394	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_A, data);
1395
1396	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RUN_ASSP);
1397
1398	return;
1399}
1400
1401static uint8_t
1402esa_assp_halt(struct esa_softc *sc)
1403{
1404	bus_space_tag_t iot;
1405	bus_space_handle_t ioh;
1406	uint8_t data, reset_state;
1407
1408	iot = sc->sc_iot;
1409	ioh = sc->sc_ioh;
1410	data = bus_space_read_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B);
1411	reset_state = data & ~ESA_REGB_STOP_CLOCK;
1412	delay(10000);
1413	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
1414			reset_state & ~ESA_REGB_ENABLE_RESET);
1415	delay(10000);
1416
1417	return reset_state;
1418}
1419
1420static void
1421esa_codec_reset(struct esa_softc *sc)
1422{
1423	bus_space_tag_t iot;
1424	bus_space_handle_t ioh;
1425	uint16_t data, dir;
1426	int retry;
1427
1428	iot = sc->sc_iot;
1429	ioh = sc->sc_ioh;
1430	retry = 0;
1431	do {
1432		data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
1433		dir = data | 0x10; /* assuming pci bus master? */
1434
1435		/* remote codec config */
1436		data = bus_space_read_2(iot, ioh, ESA_RING_BUS_CTRL_B);
1437		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_B,
1438		    data & ~ESA_SECOND_CODEC_ID_MASK);
1439		data = bus_space_read_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL);
1440		bus_space_write_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL,
1441		    data & ~ESA_COMMAND_ADDR_OUT);
1442		data = bus_space_read_2(iot, ioh, ESA_SDO_IN_DEST_CTRL);
1443		bus_space_write_2(iot, ioh, ESA_SDO_IN_DEST_CTRL,
1444		    data & ~ESA_STATUS_ADDR_IN);
1445
1446		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
1447				  ESA_IO_SRAM_ENABLE);
1448		delay(20);
1449
1450		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
1451		    dir & ~ESA_GPO_PRIMARY_AC97);
1452		bus_space_write_2(iot, ioh, ESA_GPIO_MASK,
1453				  ~ESA_GPO_PRIMARY_AC97);
1454		bus_space_write_2(iot, ioh, ESA_GPIO_DATA, 0);
1455		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
1456		    dir | ESA_GPO_PRIMARY_AC97);
1457		delay(sc->delay1 * 1000);
1458		bus_space_write_2(iot, ioh, ESA_GPIO_DATA,
1459				  ESA_GPO_PRIMARY_AC97);
1460		delay(5);
1461		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
1462		    ESA_IO_SRAM_ENABLE | ESA_SERIAL_AC_LINK_ENABLE);
1463		bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
1464		delay(sc->delay2 * 1000);
1465
1466		esa_read_codec(sc, 0x7c, &data);
1467		if ((data == 0) || (data == 0xffff)) {
1468			retry++;
1469			if (retry > 3) {
1470				aprint_error_dev(sc->sc_dev,
1471				    "esa_codec_reset: failed\n");
1472				break;
1473			}
1474			aprint_normal_dev(sc->sc_dev,
1475			    "esa_codec_reset: retrying\n");
1476		} else
1477			retry = 0;
1478	} while (retry);
1479
1480	return;
1481}
1482
1483static int
1484esa_amp_enable(struct esa_softc *sc)
1485{
1486	bus_space_tag_t iot;
1487	bus_space_handle_t ioh;
1488	uint32_t gpo, polarity_port, polarity;
1489	uint16_t data;
1490
1491	iot = sc->sc_iot;
1492	ioh = sc->sc_ioh;
1493	switch (sc->type) {
1494	case ESS_ALLEGRO1:
1495		polarity_port = 0x1800;
1496		break;
1497	case ESS_MAESTRO3:
1498		polarity_port = 0x1100;
1499		break;
1500	default:
1501		aprint_error_dev(sc->sc_dev,
1502		    "esa_amp_enable: Unknown chip type!!!\n");
1503		return 1;
1504	}
1505
1506	gpo = (polarity_port >> 8) & 0x0f;
1507	polarity = polarity_port >> 12;
1508	polarity = !polarity;	/* Enable */
1509	polarity = polarity << gpo;
1510	gpo = 1 << gpo;
1511	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~gpo);
1512	data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
1513	bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION, data | gpo);
1514	data = ESA_GPO_SECONDARY_AC97 | ESA_GPO_PRIMARY_AC97 | polarity;
1515	bus_space_write_2(iot, ioh, ESA_GPIO_DATA, data);
1516	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
1517
1518	return 0;
1519}
1520
1521static void
1522esa_enable_interrupts(struct esa_softc *sc)
1523{
1524	bus_space_tag_t iot;
1525	bus_space_handle_t ioh;
1526	uint8_t data;
1527
1528	iot = sc->sc_iot;
1529	ioh = sc->sc_ioh;
1530	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
1531	    ESA_ASSP_INT_ENABLE | ESA_HV_INT_ENABLE);
1532	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_C);
1533	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C,
1534	    data | ESA_ASSP_HOST_INT_ENABLE);
1535}
1536
1537/*
1538 * List management
1539 */
1540static int
1541esa_add_list(struct esa_voice *vc, struct esa_list *el,
1542	     uint16_t val, int index)
1543{
1544	struct esa_softc *sc;
1545
1546	sc = device_private(vc->parent);
1547	el->indexmap[index] = el->currlen;
1548	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1549		       el->mem_addr + el->currlen,
1550		       val);
1551
1552	return el->currlen++;
1553}
1554
1555static void
1556esa_remove_list(struct esa_voice *vc, struct esa_list *el, int index)
1557{
1558	struct esa_softc *sc;
1559	uint16_t val;
1560	int lastindex;
1561	int vindex;
1562	int i;
1563
1564	sc = device_private(vc->parent);
1565	lastindex = el->currlen - 1;
1566	vindex = el->indexmap[index];
1567
1568	/* reset our virtual index */
1569	el->indexmap[index] = -1;
1570
1571	if (vindex != lastindex) {
1572		val = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1573				    el->mem_addr + lastindex);
1574		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1575			       el->mem_addr + vindex,
1576			       val);
1577		for (i = 0; i < ESA_NUM_VOICES * 2; i++)
1578			if (el->indexmap[i] == lastindex)
1579				break;
1580		if (i >= ESA_NUM_VOICES * 2)
1581			aprint_error_dev(sc->sc_dev,
1582			    "esa_remove_list: invalid task index\n");
1583		else
1584			el->indexmap[i] = vindex;
1585	}
1586
1587	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1588		       el->mem_addr + lastindex, 0);
1589	el->currlen--;
1590
1591	return;
1592}
1593
1594static bool
1595esa_suspend(device_t dv, const pmf_qual_t *qual)
1596{
1597	struct esa_softc *sc = device_private(dv);
1598	bus_space_tag_t iot = sc->sc_iot;
1599	bus_space_handle_t ioh = sc->sc_ioh;
1600	int i, index;
1601
1602	index = 0;
1603
1604	mutex_enter(&sc->sc_lock);
1605	mutex_spin_enter(&sc->sc_intr_lock);
1606
1607	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL, 0);
1608	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C, 0);
1609
1610	esa_assp_halt(sc);
1611
1612	/* Save ASSP state */
1613	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
1614	    i++)
1615		sc->savemem[index++] = esa_read_assp(sc,
1616		    ESA_MEMTYPE_INTERNAL_CODE, i);
1617	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
1618	    i++)
1619		sc->savemem[index++] = esa_read_assp(sc,
1620		    ESA_MEMTYPE_INTERNAL_DATA, i);
1621
1622	mutex_spin_exit(&sc->sc_intr_lock);
1623	mutex_exit(&sc->sc_lock);
1624
1625	return true;
1626}
1627
1628static bool
1629esa_resume(device_t dv, const pmf_qual_t *qual)
1630{
1631	struct esa_softc *sc = device_private(dv);
1632	bus_space_tag_t iot = sc->sc_iot;
1633	bus_space_handle_t ioh = sc->sc_ioh;
1634	int i, index;
1635	uint8_t reset_state;
1636	pcireg_t data;
1637
1638	index = 0;
1639
1640	delay(10000);
1641
1642	mutex_enter(&sc->sc_lock);
1643	mutex_spin_enter(&sc->sc_intr_lock);
1644
1645	data = pci_conf_read(sc->sc_pct, sc->sc_tag, PCI_LEGACY_AUDIO_CTRL);
1646	pci_conf_write(sc->sc_pct, sc->sc_tag, PCI_LEGACY_AUDIO_CTRL,
1647	    data | DISABLE_LEGACY);
1648
1649	bus_space_write_4(iot, ioh, ESA_PCI_ACPI_CONTROL, ESA_PCI_ACPI_D0);
1650
1651	esa_config(sc);
1652
1653	reset_state = esa_assp_halt(sc);
1654
1655	esa_init_codec(sc);
1656	esa_codec_reset(sc);
1657
1658	/* restore ASSP */
1659	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
1660	    i++)
1661		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, i,
1662		    sc->savemem[index++]);
1663	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
1664	    i++)
1665		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i,
1666		    sc->savemem[index++]);
1667
1668	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_DMA_ACTIVE, 0);
1669	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
1670	    reset_state | ESA_REGB_ENABLE_RESET);
1671
1672	esa_enable_interrupts(sc);
1673	esa_amp_enable(sc);
1674
1675	mutex_spin_exit(&sc->sc_intr_lock);
1676
1677	/* Finally, power up AC97 codec */
1678	delay(1000);
1679
1680	sc->codec_if->vtbl->restore_ports(sc->codec_if);
1681
1682	mutex_exit(&sc->sc_lock);
1683
1684	return true;
1685}
1686
1687static uint32_t
1688esa_get_pointer(struct esa_softc *sc, struct esa_channel *ch)
1689{
1690	uint16_t hi, lo;
1691	uint32_t addr;
1692	int data_offset;
1693
1694	data_offset = ch->data_offset;
1695	hi = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
1696	    ESA_CDATA_HOST_SRC_CURRENTH);
1697	lo = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
1698	    ESA_CDATA_HOST_SRC_CURRENTL);
1699
1700	addr = lo | ((uint32_t)hi << 16);
1701	return (addr - ch->start);
1702}
1703
1704static void
1705esa_get_locks(void *addr, kmutex_t **intr, kmutex_t **proc)
1706{
1707	struct esa_voice *vc;
1708	struct esa_softc *sc;
1709
1710	vc = addr;
1711	sc = device_private(vc->parent);
1712
1713	*intr = &sc->sc_intr_lock;
1714	*proc = &sc->sc_lock;
1715}
1716