xref: /netbsd-src/sys/dev/pci/esa.c (revision ce2c90c7c172d95d2402a5b3d96d8f8e6d138a21)
1 /* $NetBSD: esa.c,v 1.39 2006/10/12 01:31:28 christos Exp $ */
2 
3 /*
4  * Copyright (c) 2001, 2002, 2006 Jared D. McNeill <jmcneill@invisible.ca>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. The name of the author may not be used to endorse or promote products
13  *    derived from this software without specific prior written permission.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  */
27 
28 /*
29  * ESS Allegro-1 / Maestro3 Audio Driver
30  *
31  * Based on the FreeBSD maestro3 driver and the NetBSD eap driver.
32  * Original driver by Don Kim.
33  *
34  * The list management code could possibly be written better, but what
35  * we have right now does the job nicely. Thanks to Zach Brown <zab@zabbo.net>
36  * and Andrew MacDonald <amac@epsilon.yi.org> for helping me debug the
37  * problems with the original list management code present in the Linux
38  * driver.
39  */
40 
41 #include <sys/cdefs.h>
42 __KERNEL_RCSID(0, "$NetBSD: esa.c,v 1.39 2006/10/12 01:31:28 christos Exp $");
43 
44 #include <sys/types.h>
45 #include <sys/errno.h>
46 #include <sys/null.h>
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/malloc.h>
50 #include <sys/device.h>
51 #include <sys/conf.h>
52 #include <sys/exec.h>
53 #include <sys/select.h>
54 #include <sys/audioio.h>
55 
56 #include <machine/bus.h>
57 #include <machine/intr.h>
58 
59 #include <dev/pci/pcidevs.h>
60 #include <dev/pci/pcivar.h>
61 
62 #include <dev/audio_if.h>
63 #include <dev/mulaw.h>
64 #include <dev/auconv.h>
65 #include <dev/ic/ac97var.h>
66 #include <dev/ic/ac97reg.h>
67 
68 #include <dev/pci/esareg.h>
69 #include <dev/pci/esadsp.h>
70 #include <dev/pci/esavar.h>
71 
72 #define PCI_CBIO	0x10
73 
74 #define ESA_DAC_DATA	0x1100
75 
76 enum {
77 	ESS_ALLEGRO1,
78 	ESS_MAESTRO3
79 };
80 
81 static const struct esa_card_type {
82 	uint16_t pci_vendor_id;
83 	uint16_t pci_product_id;
84 	int type;
85 	int delay1, delay2;
86 } esa_card_types[] = {
87 	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_ALLEGRO1,
88 	  ESS_ALLEGRO1, 50, 800 },
89 	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_MAESTRO3,
90 	  ESS_MAESTRO3, 20, 500 },
91 	{ PCI_VENDOR_ESSTECH, PCI_PRODUCT_ESSTECH_MAESTRO3_2,
92 	  ESS_MAESTRO3, 20, 500 },
93 	{ 0, 0, 0, 0, 0 }
94 };
95 
96 static struct audio_device esa_device = {
97 	"ESS Allegro",
98 	"",
99 	"esa"
100 };
101 
102 static int		esa_match(struct device *, struct cfdata *, void *);
103 static void		esa_attach(struct device *, struct device *, void *);
104 static int		esa_detach(struct device *, int);
105 
106 /* audio(9) functions */
107 static int		esa_query_encoding(void *, struct audio_encoding *);
108 static int		esa_set_params(void *, int, int, audio_params_t *,
109 				       audio_params_t *, stream_filter_list_t *,
110 				       stream_filter_list_t *);
111 static int		esa_round_blocksize(void *, int, int,
112 					    const audio_params_t *);
113 static int		esa_commit_settings(void *);
114 static int		esa_halt_output(void *);
115 static int		esa_halt_input(void *);
116 static int		esa_set_port(void *, mixer_ctrl_t *);
117 static int		esa_get_port(void *, mixer_ctrl_t *);
118 static int		esa_query_devinfo(void *, mixer_devinfo_t *);
119 static void *		esa_malloc(void *, int, size_t, struct malloc_type *,
120 				   int);
121 static void		esa_free(void *, void *, struct malloc_type *);
122 static int		esa_getdev(void *, struct audio_device *);
123 static size_t		esa_round_buffersize(void *, int, size_t);
124 static int		esa_get_props(void *);
125 static int		esa_trigger_output(void *, void *, void *, int,
126 					   void (*)(void *), void *,
127 					   const audio_params_t *);
128 static int		esa_trigger_input(void *, void *, void *, int,
129 					  void (*)(void *), void *,
130 					  const audio_params_t *);
131 
132 static int		esa_intr(void *);
133 static int		esa_allocmem(struct esa_softc *, size_t, size_t,
134 				     struct esa_dma *);
135 static int		esa_freemem(struct esa_softc *, struct esa_dma *);
136 static paddr_t		esa_mappage(void *, void *, off_t, int);
137 
138 /* Supporting subroutines */
139 static uint16_t		esa_read_assp(struct esa_softc *, uint16_t, uint16_t);
140 static void		esa_write_assp(struct esa_softc *, uint16_t, uint16_t,
141 				       uint16_t);
142 static int		esa_init_codec(struct esa_softc *);
143 static int		esa_attach_codec(void *, struct ac97_codec_if *);
144 static int		esa_read_codec(void *, uint8_t, uint16_t *);
145 static int		esa_write_codec(void *, uint8_t, uint16_t);
146 static int		esa_reset_codec(void *);
147 static enum ac97_host_flags	esa_flags_codec(void *);
148 static int		esa_wait(struct esa_softc *);
149 static int		esa_init(struct esa_softc *);
150 static void		esa_config(struct esa_softc *);
151 static uint8_t		esa_assp_halt(struct esa_softc *);
152 static void		esa_codec_reset(struct esa_softc *);
153 static int		esa_amp_enable(struct esa_softc *);
154 static void		esa_enable_interrupts(struct esa_softc *);
155 static uint32_t		esa_get_pointer(struct esa_softc *,
156 					struct esa_channel *);
157 
158 /* list management */
159 static int		esa_add_list(struct esa_voice *, struct esa_list *,
160 				     uint16_t, int);
161 static void		esa_remove_list(struct esa_voice *, struct esa_list *,
162 					int);
163 
164 /* power management */
165 static void		esa_powerhook(int, void *);
166 static int		esa_suspend(struct esa_softc *);
167 static int		esa_resume(struct esa_softc *);
168 
169 
170 #define ESA_NENCODINGS 8
171 static audio_encoding_t esa_encoding[ESA_NENCODINGS] = {
172 	{ 0, AudioEulinear, AUDIO_ENCODING_ULINEAR, 8, 0 },
173 	{ 1, AudioEmulaw, AUDIO_ENCODING_ULAW, 8,
174 		AUDIO_ENCODINGFLAG_EMULATED },
175 	{ 2, AudioEalaw, AUDIO_ENCODING_ALAW, 8, AUDIO_ENCODINGFLAG_EMULATED },
176 	{ 3, AudioEslinear, AUDIO_ENCODING_SLINEAR, 8,
177 		AUDIO_ENCODINGFLAG_EMULATED }, /* XXX: Are you sure? */
178 	{ 4, AudioEslinear_le, AUDIO_ENCODING_SLINEAR_LE, 16, 0 },
179 	{ 5, AudioEulinear_le, AUDIO_ENCODING_ULINEAR_LE, 16,
180 		AUDIO_ENCODINGFLAG_EMULATED },
181 	{ 6, AudioEslinear_be, AUDIO_ENCODING_SLINEAR_BE, 16,
182 		AUDIO_ENCODINGFLAG_EMULATED },
183 	{ 7, AudioEulinear_be, AUDIO_ENCODING_ULINEAR_BE, 16,
184 		AUDIO_ENCODINGFLAG_EMULATED }
185 };
186 
187 #define ESA_NFORMATS	4
188 static const struct audio_format esa_formats[ESA_NFORMATS] = {
189 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
190 	 2, AUFMT_STEREO, 0, {ESA_MINRATE, ESA_MAXRATE}},
191 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
192 	 1, AUFMT_MONAURAL, 0, {ESA_MINRATE, ESA_MAXRATE}},
193 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 8, 8,
194 	 2, AUFMT_STEREO, 0, {ESA_MINRATE, ESA_MAXRATE}},
195 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 8, 8,
196 	 1, AUFMT_MONAURAL, 0, {ESA_MINRATE, ESA_MAXRATE}},
197 };
198 
199 static const struct audio_hw_if esa_hw_if = {
200 	NULL,			/* open */
201 	NULL,			/* close */
202 	NULL,			/* drain */
203 	esa_query_encoding,
204 	esa_set_params,
205 	esa_round_blocksize,
206 	esa_commit_settings,
207 	NULL,			/* init_output */
208 	NULL,			/* init_input */
209 	NULL,			/* start_output */
210 	NULL,			/* start_input */
211 	esa_halt_output,
212 	esa_halt_input,
213 	NULL,			/* speaker_ctl */
214 	esa_getdev,
215 	NULL,			/* getfd */
216 	esa_set_port,
217 	esa_get_port,
218 	esa_query_devinfo,
219 	esa_malloc,
220 	esa_free,
221 	esa_round_buffersize,
222 	esa_mappage,
223 	esa_get_props,
224 	esa_trigger_output,
225 	esa_trigger_input,
226 	NULL,	/* dev_ioctl */
227 	NULL,	/* powerstate */
228 };
229 
230 CFATTACH_DECL(esa, sizeof(struct esa_softc), esa_match, esa_attach,
231     esa_detach, NULL);
232 
233 /*
234  * audio(9) functions
235  */
236 
237 static int
238 esa_query_encoding(void *hdl __unused, struct audio_encoding *ae)
239 {
240 
241 	if (ae->index < 0 || ae->index >= ESA_NENCODINGS)
242 		return EINVAL;
243 	*ae = esa_encoding[ae->index];
244 
245 	return 0;
246 }
247 
248 static int
249 esa_set_params(void *hdl, int setmode, int usemode __unused,
250     audio_params_t *play, audio_params_t *rec, stream_filter_list_t *pfil,
251     stream_filter_list_t *rfil)
252 {
253 	struct esa_voice *vc;
254 	struct esa_channel *ch;
255 	struct audio_params *p;
256 	stream_filter_list_t *fil;
257 	int mode, i;
258 
259 	vc = hdl;
260 	for (mode = AUMODE_RECORD; mode != -1;
261 	     mode = (mode == AUMODE_RECORD) ? AUMODE_PLAY : -1) {
262 		if ((setmode & mode) == 0)
263 			continue;
264 
265 		switch (mode) {
266 		case AUMODE_PLAY:
267 			p = play;
268 			ch = &vc->play;
269 			fil = pfil;
270 			break;
271 		case AUMODE_RECORD:
272 			p = rec;
273 			ch = &vc->rec;
274 			fil = rfil;
275 			break;
276 		default:
277 			return EINVAL;
278 		}
279 
280 		if (p->sample_rate < ESA_MINRATE ||
281 		    p->sample_rate > ESA_MAXRATE ||
282 		    (p->precision != 8 && p->precision != 16) ||
283 		    (p->channels < 1 || p->channels > 2))
284 			return EINVAL;
285 
286 		i = auconv_set_converter(esa_formats, ESA_NFORMATS,
287 					 mode, p, FALSE, fil);
288 		if (i < 0)
289 			return EINVAL;
290 		if (fil->req_size > 0)
291 			p = &fil->filters[0].param;
292 		ch->mode = *p;
293 	}
294 
295 	return 0;
296 }
297 
298 static int
299 esa_commit_settings(void *hdl)
300 {
301 	struct esa_voice *vc;
302 	struct esa_softc *sc;
303 	const audio_params_t *p;
304 	const audio_params_t *r;
305 	uint32_t data;
306 	uint32_t freq;
307 	int data_bytes;
308 
309 	vc = hdl;
310 	sc = (struct esa_softc *)vc->parent;
311 	p = &vc->play.mode;
312 	r = &vc->rec.mode;
313 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
314 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
315 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255)
316 	    &~ 255;
317 	/* playback */
318 	vc->play.data_offset = ESA_DAC_DATA + (data_bytes * vc->index);
319 	if (p->channels == 1)
320 		data = 1;
321 	else
322 		data = 0;
323 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
324 		       vc->play.data_offset + ESA_SRC3_MODE_OFFSET,
325 		       data);
326 	if (p->precision  == 8)
327 		data = 1;
328 	else
329 		data = 0;
330 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
331 		       vc->play.data_offset + ESA_SRC3_WORD_LENGTH_OFFSET,
332 		       data);
333 	if ((freq = ((p->sample_rate << 15) + 24000) / 48000) != 0) {
334 		freq--;
335 	}
336 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
337 		       vc->play.data_offset + ESA_CDATA_FREQUENCY, freq);
338 
339 	/* recording */
340 	vc->rec.data_offset = ESA_DAC_DATA + (data_bytes * vc->index) +
341 			      (data_bytes / 2);
342 	if (r->channels == 1)
343 		data = 1;
344 	else
345 		data = 0;
346 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
347 		       vc->rec.data_offset + ESA_SRC3_MODE_OFFSET,
348 		       data);
349 	if (r->precision == 8)
350 		data = 1;
351 	else
352 		data = 0;
353 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
354 		       vc->rec.data_offset + ESA_SRC3_WORD_LENGTH_OFFSET,
355 		       data);
356 	if ((freq = ((r->sample_rate << 15) + 24000) / 48000) != 0) {
357 		freq--;
358 	}
359 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
360 		       vc->rec.data_offset + ESA_CDATA_FREQUENCY, freq);
361 
362 	return 0;
363 };
364 
365 static int
366 esa_round_blocksize(void *hdl __unused, int bs, int mode __unused,
367     const audio_params_t *param __unused)
368 {
369 
370 	return bs & ~0x20;	/* Be conservative; align to 32 bytes */
371 }
372 
373 static int
374 esa_halt_output(void *hdl)
375 {
376 	struct esa_voice *vc;
377 	struct esa_softc *sc;
378 	bus_space_tag_t iot;
379 	bus_space_handle_t ioh;
380 	uint16_t data;
381 
382 	vc = hdl;
383 	sc = (struct esa_softc *)vc->parent;
384 	iot = sc->sc_iot;
385 	ioh = sc->sc_ioh;
386 	if (vc->play.active == 0)
387 		return 0;
388 
389 	vc->play.active = 0;
390 
391 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
392 		       ESA_CDATA_INSTANCE_READY + vc->play.data_offset, 0);
393 
394 	sc->sc_ntimers--;
395 	if (sc->sc_ntimers == 0) {
396 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
397 			       ESA_KDATA_TIMER_COUNT_RELOAD, 0);
398 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
399 			       ESA_KDATA_TIMER_COUNT_CURRENT, 0);
400 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
401 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
402 		    data & ~ESA_CLKRUN_GEN_ENABLE);
403 	}
404 
405 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
406 		       ESA_KDATA_MIXER_TASK_NUMBER,
407 		       sc->mixer_list.indexmap[vc->index]);
408 	/* remove ourselves from the packed lists */
409 	esa_remove_list(vc, &sc->mixer_list, vc->index);
410 	esa_remove_list(vc, &sc->dma_list, vc->index);
411 	esa_remove_list(vc, &sc->msrc_list, vc->index);
412 
413 	return 0;
414 }
415 
416 static int
417 esa_halt_input(void *hdl)
418 {
419 	struct esa_voice *vc;
420 	struct esa_softc *sc;
421 	bus_space_tag_t iot;
422 	bus_space_handle_t ioh;
423 	uint32_t data;
424 
425 	vc = hdl;
426 	sc = (struct esa_softc *)vc->parent;
427 	iot = sc->sc_iot;
428 	ioh = sc->sc_ioh;
429 	if (vc->rec.active == 0)
430 		return 0;
431 
432 	vc->rec.active = 0;
433 
434 	sc->sc_ntimers--;
435 	if (sc->sc_ntimers == 0) {
436 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
437 			       ESA_KDATA_TIMER_COUNT_RELOAD, 0);
438 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
439 			       ESA_KDATA_TIMER_COUNT_CURRENT, 0);
440 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
441 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
442 				  data & ~ESA_CLKRUN_GEN_ENABLE);
443 	}
444 
445 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, vc->rec.data_offset +
446 		       ESA_CDATA_INSTANCE_READY, 0);
447 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_ADC1_REQUEST,
448 		       0);
449 
450 	/* remove ourselves from the packed lists */
451 	esa_remove_list(vc, &sc->adc1_list, vc->index + ESA_NUM_VOICES);
452 	esa_remove_list(vc, &sc->dma_list, vc->index + ESA_NUM_VOICES);
453 	esa_remove_list(vc, &sc->msrc_list, vc->index + ESA_NUM_VOICES);
454 
455 	return 0;
456 }
457 
458 static void *
459 esa_malloc(void *hdl, int direction __unused, size_t size,
460     struct malloc_type *type, int flags)
461 {
462 	struct esa_voice *vc;
463 	struct esa_softc *sc;
464 	struct esa_dma *p;
465 	int error;
466 
467 	p = malloc(sizeof(*p), type, flags);
468 	if (p == NULL)
469 		return NULL;
470 	vc = hdl;
471 	sc = (struct esa_softc *)vc->parent;
472 	error = esa_allocmem(sc, size, 16, p);
473 	if (error) {
474 		free(p, type);
475 		printf("%s: esa_malloc: not enough memory\n",
476 		    sc->sc_dev.dv_xname);
477 		return 0;
478 	}
479 	p->next = vc->dma;
480 	vc->dma = p;
481 
482 	return KERNADDR(p);
483 }
484 
485 static void
486 esa_free(void *hdl, void *addr, struct malloc_type *type)
487 {
488 	struct esa_voice *vc;
489 	struct esa_softc *sc;
490 	struct esa_dma *p;
491 	struct esa_dma **pp;
492 
493 	vc = hdl;
494 	sc = (struct esa_softc *)vc->parent;
495 	for (pp = &vc->dma; (p = *pp) != NULL; pp = &p->next)
496 		if (KERNADDR(p) == addr) {
497 			esa_freemem(sc, p);
498 			*pp = p->next;
499 			free(p, type);
500 			return;
501 		}
502 }
503 
504 static int
505 esa_getdev(void *hdl __unused, struct audio_device *ret)
506 {
507 
508 	*ret = esa_device;
509 	return 0;
510 }
511 
512 static int
513 esa_set_port(void *hdl, mixer_ctrl_t *mc)
514 {
515 	struct esa_voice *vc;
516 	struct esa_softc *sc;
517 
518 	vc = hdl;
519 	sc = (struct esa_softc *)vc->parent;
520 	return sc->codec_if->vtbl->mixer_set_port(sc->codec_if, mc);
521 }
522 
523 static int
524 esa_get_port(void *hdl, mixer_ctrl_t *mc)
525 {
526 	struct esa_voice *vc;
527 	struct esa_softc *sc;
528 
529 	vc = hdl;
530 	sc = (struct esa_softc *)vc->parent;
531 	return sc->codec_if->vtbl->mixer_get_port(sc->codec_if, mc);
532 }
533 
534 static int
535 esa_query_devinfo(void *hdl, mixer_devinfo_t *di)
536 {
537 	struct esa_voice *vc;
538 	struct esa_softc *sc;
539 
540 	vc = hdl;
541 	sc = (struct esa_softc *)vc->parent;
542 	return sc->codec_if->vtbl->query_devinfo(sc->codec_if, di);
543 }
544 
545 static size_t
546 esa_round_buffersize(void *hdl __unused, int direction __unused, size_t bufsize)
547 {
548 
549 	return bufsize;
550 }
551 
552 static int
553 esa_get_props(void *hdl __unused)
554 {
555 
556 	return AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
557 }
558 
559 static int
560 esa_trigger_output(void *hdl, void *start, void *end, int blksize,
561     void (*intr)(void *), void *intrarg, const audio_params_t *param __unused)
562 {
563 	struct esa_voice *vc;
564 	struct esa_softc *sc;
565 	struct esa_dma *p;
566 	bus_space_tag_t iot;
567 	bus_space_handle_t ioh;
568 	size_t size;
569 	uint32_t data, bufaddr, i;
570 	int data_bytes, dac_data, dsp_in_size;
571 	int dsp_out_size, dsp_in_buf, dsp_out_buf;
572 
573 	vc = hdl;
574 	sc = (struct esa_softc *)vc->parent;
575 	iot = sc->sc_iot;
576 	ioh = sc->sc_ioh;
577 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
578 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
579 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
580 	dac_data = ESA_DAC_DATA + (data_bytes * vc->index);
581 	dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x20 * 2);
582 	dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x20 * 2);
583 	dsp_in_buf = dac_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
584 	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
585 
586 	if (vc->play.active)
587 		return EINVAL;
588 
589 	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
590 		continue;
591 	if (p == NULL) {
592 		printf("%s: esa_trigger_output: bad addr %p\n",
593 		    sc->sc_dev.dv_xname, start);
594 		return EINVAL;
595 	}
596 
597 	vc->play.active = 1;
598 	vc->play.intr = intr;
599 	vc->play.arg = intrarg;
600 	vc->play.pos = 0;
601 	vc->play.count = 0;
602 	vc->play.buf = start;
603 	vc->play.bufsize = size = (size_t)(((caddr_t)end - (caddr_t)start));
604 	vc->play.blksize = blksize;
605 	bufaddr = DMAADDR(p);
606 	vc->play.start = bufaddr;
607 
608 #define LO(x) ((x) & 0x0000ffff)
609 #define HI(x) ((x) >> 16)
610 
611 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
612 	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
613 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
614 	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
615 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
616 	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
617 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
618 	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
619 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
620 	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
621 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
622 	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
623 
624 	/* DSP buffers */
625 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
626 	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
627 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
628 	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
629 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
630 	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
631 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
632 	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
633 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
634 	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
635 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
636 	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
637 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
638 	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
639 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
640 	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
641 
642 	/* Some per-client initializers */
643 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
644 	    ESA_SRC3_DIRECTION_OFFSET + 12, dac_data + 40 + 8);
645 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
646 	    ESA_SRC3_DIRECTION_OFFSET + 19, 0x400 + ESA_MINISRC_COEF_LOC);
647 	/* Enable or disable low-pass filter? (0xff if rate > 45000) */
648 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
649 	    ESA_SRC3_DIRECTION_OFFSET + 22,
650 	    vc->play.mode.sample_rate > 45000 ? 0xff : 0);
651 	/* Tell it which way DMA is going */
652 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
653 	    ESA_CDATA_DMA_CONTROL,
654 	    ESA_DMACONTROL_AUTOREPEAT + ESA_DMAC_PAGE3_SELECTOR +
655 	    ESA_DMAC_BLOCKF_SELECTOR);
656 
657 	/* Set an armload of static initializers */
658 	for (i = 0; i < (sizeof(esa_playvals) / sizeof(esa_playvals[0])); i++)
659 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
660 		    esa_playvals[i].addr, esa_playvals[i].val);
661 
662 	/* Put us in the packed task lists */
663 	esa_add_list(vc, &sc->msrc_list, dac_data >> ESA_DP_SHIFT_COUNT,
664 		     vc->index);
665 	esa_add_list(vc, &sc->dma_list, dac_data >> ESA_DP_SHIFT_COUNT,
666 		     vc->index);
667 	esa_add_list(vc, &sc->mixer_list, dac_data >> ESA_DP_SHIFT_COUNT,
668 		     vc->index);
669 #undef LO
670 #undef HI
671 
672 	sc->sc_ntimers++;
673 
674 	if (sc->sc_ntimers == 1) {
675 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
676 		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
677 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
678 		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
679 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
680 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
681 		    data | ESA_CLKRUN_GEN_ENABLE);
682 	}
683 
684 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
685 	    ESA_CDATA_INSTANCE_READY, 1);
686 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
687 	    ESA_KDATA_MIXER_TASK_NUMBER,
688 	    sc->mixer_list.indexmap[vc->index]);
689 
690 	return 0;
691 }
692 
693 static int
694 esa_trigger_input(void *hdl, void *start, void *end, int blksize,
695     void (*intr)(void *), void *intrarg, const audio_params_t *param __unused)
696 {
697 	struct esa_voice *vc;
698 	struct esa_softc *sc;
699 	struct esa_dma *p;
700 	bus_space_tag_t iot;
701 	bus_space_handle_t ioh;
702 	uint32_t data, bufaddr, i;
703 	size_t size;
704 	int data_bytes, adc_data, dsp_in_size;
705 	int dsp_out_size, dsp_in_buf, dsp_out_buf;
706 
707 	vc = hdl;
708 	sc = (struct esa_softc *)vc->parent;
709 	iot = sc->sc_iot;
710 	ioh = sc->sc_ioh;
711 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
712 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
713 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
714 	adc_data = ESA_DAC_DATA + (data_bytes * vc->index) + (data_bytes / 2);
715 	dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x10 * 2);
716 	dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x10 * 2);
717 	dsp_in_buf = adc_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
718 	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
719 
720 	vc->rec.data_offset = adc_data;
721 
722 	/* We only support 1 recording channel */
723 	if (vc->index > 0)
724 		return ENODEV;
725 
726 	if (vc->rec.active)
727 		return EINVAL;
728 
729 	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
730 		continue;
731 	if (p == NULL) {
732 		printf("%s: esa_trigger_input: bad addr %p\n",
733 		    sc->sc_dev.dv_xname, start);
734 		return EINVAL;
735 	}
736 
737 	vc->rec.active = 1;
738 	vc->rec.intr = intr;
739 	vc->rec.arg = intrarg;
740 	vc->rec.pos = 0;
741 	vc->rec.count = 0;
742 	vc->rec.buf = start;
743 	vc->rec.bufsize = size = (size_t)(((caddr_t)end - (caddr_t)start));
744 	vc->rec.blksize = blksize;
745 	bufaddr = DMAADDR(p);
746 	vc->rec.start = bufaddr;
747 
748 #define LO(x) ((x) & 0x0000ffff)
749 #define HI(x) ((x) >> 16)
750 
751 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
752 	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
753 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
754 	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
755 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
756 	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
757 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
758 	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
759 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
760 	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
761 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
762 	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
763 
764 	/* DSP buffers */
765 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
766 	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
767 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
768 	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
769 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
770 	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
771 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
772 	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
773 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
774 	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
775 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
776 	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
777 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
778 	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
779 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
780 	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
781 
782 	/* Some per-client initializers */
783 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
784 	    ESA_SRC3_DIRECTION_OFFSET + 12, adc_data + 40 + 8);
785 	/* Tell it which way DMA is going */
786 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
787 	    ESA_CDATA_DMA_CONTROL,
788 	    ESA_DMACONTROL_DIRECTION + ESA_DMACONTROL_AUTOREPEAT +
789 	    ESA_DMAC_PAGE3_SELECTOR + ESA_DMAC_BLOCKF_SELECTOR);
790 
791 	/* Set an armload of static initializers */
792 	for (i = 0; i < (sizeof(esa_recvals) / sizeof(esa_recvals[0])); i++)
793 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
794 		    esa_recvals[i].addr, esa_recvals[i].val);
795 
796 	/* Put us in the packed task lists */
797 	esa_add_list(vc, &sc->adc1_list, adc_data >> ESA_DP_SHIFT_COUNT,
798 		     vc->index + ESA_NUM_VOICES);
799 	esa_add_list(vc, &sc->msrc_list, adc_data >> ESA_DP_SHIFT_COUNT,
800 		     vc->index + ESA_NUM_VOICES);
801 	esa_add_list(vc, &sc->dma_list, adc_data >> ESA_DP_SHIFT_COUNT,
802 		     vc->index + ESA_NUM_VOICES);
803 #undef LO
804 #undef HI
805 
806 	sc->sc_ntimers++;
807 	if (sc->sc_ntimers == 1) {
808 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
809 		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
810 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
811 		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
812 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
813 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
814 		    data | ESA_CLKRUN_GEN_ENABLE);
815 	}
816 
817 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
818 	    ESA_CDATA_INSTANCE_READY, 1);
819 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_ADC1_REQUEST,
820 	    1);
821 
822 	return 0;
823 }
824 
825 /* Interrupt handler */
826 static int
827 esa_intr(void *hdl)
828 {
829 	struct esa_softc *sc;
830 	struct esa_voice *vc;
831 	bus_space_tag_t iot;
832 	bus_space_handle_t ioh;
833 	uint8_t status;
834 	uint32_t pos;
835 	uint32_t diff;
836 	uint32_t blksize;
837 	int i;
838 
839 	sc = hdl;
840 	iot = sc->sc_iot;
841 	ioh = sc->sc_ioh;
842 
843 	status = bus_space_read_1(iot, ioh, ESA_HOST_INT_STATUS);
844 	if (status == 0xff)
845 		return 0;
846 
847 	/* ack the interrupt */
848 	bus_space_write_1(iot, ioh, ESA_HOST_INT_STATUS, status);
849 
850 	if (status & ESA_HV_INT_PENDING) {
851 		uint8_t event;
852 
853 		printf("%s: hardware volume interrupt\n", sc->sc_dev.dv_xname);
854 		event = bus_space_read_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER);
855 		switch(event) {
856 		case 0x99:
857 		case 0xaa:
858 		case 0x66:
859 		case 0x88:
860 			printf("%s: esa_intr: FIXME\n", sc->sc_dev.dv_xname);
861 			break;
862 		default:
863 			printf("%s: unknown hwvol event 0x%02x\n",
864 			    sc->sc_dev.dv_xname, event);
865 			break;
866 		}
867 		bus_space_write_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER, 0x88);
868 	}
869 
870 	if ((status & ESA_ASSP_INT_PENDING) == 0 ||
871 	    (bus_space_read_1(iot, ioh,
872 	     ESA_ASSP_CONTROL_B) & ESA_STOP_ASSP_CLOCK) != 0 ||
873 	    (bus_space_read_1(iot, ioh,
874 	     ESA_ASSP_HOST_INT_STATUS) & ESA_DSP2HOST_REQ_TIMER) == 0)
875 		return 1;
876 
877 	bus_space_write_1(iot, ioh, ESA_ASSP_HOST_INT_STATUS,
878 	    ESA_DSP2HOST_REQ_TIMER);
879 
880 	for (i = 0; i < ESA_NUM_VOICES; i++) {
881 		vc = &sc->voice[i];
882 
883 		if (vc->play.active) {
884 			pos = esa_get_pointer(sc, &vc->play) % vc->play.bufsize;
885 			diff = (vc->play.bufsize + pos - vc->play.pos) %
886 			    vc->play.bufsize;
887 
888 			vc->play.pos = pos;
889 			vc->play.count += diff;
890 			blksize = vc->play.blksize;
891 
892 			while (vc->play.count >= blksize) {
893 				vc->play.count -= blksize;
894 				(*vc->play.intr)(vc->play.arg);
895 			}
896 		}
897 
898 		if (vc->rec.active) {
899 			pos = esa_get_pointer(sc, &vc->rec) % vc->rec.bufsize;
900 			diff = (vc->rec.bufsize + pos - vc->rec.pos) %
901 			    vc->rec.bufsize;
902 
903 			vc->rec.pos = pos;
904 			vc->rec.count += diff;
905 			blksize = vc->rec.blksize;
906 
907 			while (vc->rec.count >= blksize) {
908 				vc->rec.count -= blksize;
909 				(*vc->rec.intr)(vc->rec.arg);
910 			}
911 		}
912 	}
913 
914 	return 1;
915 }
916 
917 static int
918 esa_allocmem(struct esa_softc *sc, size_t size, size_t align,
919 	     struct esa_dma *p)
920 {
921 	int error;
922 
923 	p->size = size;
924 	error = bus_dmamem_alloc(sc->sc_dmat, p->size, align, 0,
925 				 p->segs, sizeof(p->segs) / sizeof(p->segs[0]),
926 				 &p->nsegs, BUS_DMA_NOWAIT);
927 	if (error)
928 		return error;
929 
930 	error = bus_dmamem_map(sc->sc_dmat, p->segs, p->nsegs, p->size,
931 				&p->addr, BUS_DMA_NOWAIT | BUS_DMA_COHERENT);
932 	if (error)
933 		goto free;
934 
935 	error = bus_dmamap_create(sc->sc_dmat, p->size, 1, p->size, 0,
936 				  BUS_DMA_NOWAIT, &p->map);
937 	if (error)
938 		goto unmap;
939 
940 	error = bus_dmamap_load(sc->sc_dmat, p->map, p->addr, p->size, NULL,
941 				BUS_DMA_NOWAIT);
942 	if (error)
943 		goto destroy;
944 
945 	return 0;
946 
947 destroy:
948 	bus_dmamap_destroy(sc->sc_dmat, p->map);
949 unmap:
950 	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
951 free:
952 	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
953 
954 	return error;
955 }
956 
957 static int
958 esa_freemem(struct esa_softc *sc, struct esa_dma *p)
959 {
960 
961 	bus_dmamap_unload(sc->sc_dmat, p->map);
962 	bus_dmamap_destroy(sc->sc_dmat, p->map);
963 	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
964 	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
965 
966 	return 0;
967 }
968 
969 /*
970  * Supporting Subroutines
971  */
972 
973 static int
974 esa_match(struct device *dev __unused, struct cfdata *match __unused, void *aux)
975 {
976 	struct pci_attach_args *pa;
977 
978 	pa = (struct pci_attach_args *)aux;
979 	switch (PCI_VENDOR(pa->pa_id)) {
980 	case PCI_VENDOR_ESSTECH:
981 		switch(PCI_PRODUCT(pa->pa_id)) {
982 		case PCI_PRODUCT_ESSTECH_ALLEGRO1:
983 		case PCI_PRODUCT_ESSTECH_MAESTRO3:
984 		case PCI_PRODUCT_ESSTECH_MAESTRO3_2:
985 			return 1;
986 		}
987 	}
988 
989 	return 0;
990 }
991 
992 static void
993 esa_attach(struct device *parent __unused, struct device *self, void *aux)
994 {
995 	struct esa_softc *sc;
996 	struct pci_attach_args *pa;
997 	pcitag_t tag;
998 	pci_chipset_tag_t pc;
999 	pci_intr_handle_t ih;
1000 	const struct esa_card_type *card;
1001 	const char *intrstr;
1002 	uint32_t data;
1003 	char devinfo[256];
1004 	int revision, len;
1005 	int i;
1006 	int error;
1007 
1008 	sc = (struct esa_softc *)self;
1009 	pa = (struct pci_attach_args *)aux;
1010 	tag = pa->pa_tag;
1011 	pc = pa->pa_pc;
1012 	aprint_naive(": Audio controller\n");
1013 
1014 	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
1015 	revision = PCI_REVISION(pa->pa_class);
1016 	aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision);
1017 
1018 	for (card = esa_card_types; card->pci_vendor_id; card++)
1019 		if (PCI_VENDOR(pa->pa_id) == card->pci_vendor_id &&
1020 		    PCI_PRODUCT(pa->pa_id) == card->pci_product_id) {
1021 			sc->type = card->type;
1022 			sc->delay1 = card->delay1;
1023 			sc->delay2 = card->delay2;
1024 			break;
1025 		}
1026 
1027 	data = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
1028 	data |= (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE
1029 	    | PCI_COMMAND_MASTER_ENABLE);
1030 	pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, data);
1031 
1032 	/* Map I/O register */
1033 	if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
1034 	    &sc->sc_iot, &sc->sc_ioh, &sc->sc_iob, &sc->sc_ios)) {
1035 		aprint_error("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
1036 		return;
1037 	}
1038 
1039 	/* Initialize softc */
1040 	sc->sc_tag = tag;
1041 	sc->sc_pct = pc;
1042 	sc->sc_dmat = pa->pa_dmat;
1043 
1044 	/* Map and establish an interrupt */
1045 	if (pci_intr_map(pa, &ih)) {
1046 		aprint_error("%s: can't map interrupt\n", sc->sc_dev.dv_xname);
1047 		return;
1048 	}
1049 	intrstr = pci_intr_string(pc, ih);
1050 	sc->sc_ih = pci_intr_establish(pc, ih, IPL_AUDIO, esa_intr, self);
1051 	if (sc->sc_ih == NULL) {
1052 		aprint_error("%s: can't establish interrupt",
1053 		    sc->sc_dev.dv_xname);
1054 		if (intrstr != NULL)
1055 			aprint_normal(" at %s", intrstr);
1056 		aprint_normal("\n");
1057 		return;
1058 	}
1059 	aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
1060 
1061 	/* power up chip */
1062 	if ((error = pci_activate(pa->pa_pc, pa->pa_tag, sc,
1063 	    pci_activate_null)) && error != EOPNOTSUPP) {
1064 		aprint_error("%s: cannot activate %d\n", sc->sc_dev.dv_xname,
1065 		    error);
1066 		return;
1067 	}
1068 
1069 	/* Init chip */
1070 	if (esa_init(sc) == -1) {
1071 		aprint_error("%s: esa_attach: unable to initialize the card\n",
1072 		    sc->sc_dev.dv_xname);
1073 		return;
1074 	}
1075 
1076 	/* create suspend save area */
1077 	len = sizeof(uint16_t) * (ESA_REV_B_CODE_MEMORY_LENGTH
1078 	    + ESA_REV_B_DATA_MEMORY_LENGTH + 1);
1079 	sc->savemem = (uint16_t *)malloc(len, M_DEVBUF, M_NOWAIT | M_ZERO);
1080 	if (sc->savemem == NULL) {
1081 		aprint_error("%s: unable to allocate suspend buffer\n",
1082 		    sc->sc_dev.dv_xname);
1083 		return;
1084 	}
1085 
1086 	/*
1087 	 * Every card I've seen has had their channels swapped with respect
1088 	 * to the mixer. Ie:
1089 	 *  $ mixerctl -w outputs.master=0,191
1090 	 * Would result in the _right_ speaker being turned off.
1091 	 *
1092 	 * So, we will swap the left and right mixer channels to compensate
1093 	 * for this.
1094 	 *
1095 	 * XXX PR# 23620: The Dell C810 channels are not swapped. Match
1096 	 *     on revision ID for now; this is probably wrong.
1097 	 */
1098 	if (revision == 0x10 && sc->type == ESS_MAESTRO3)
1099 		sc->codec_flags = 0;
1100 	else
1101 		sc->codec_flags = AC97_HOST_SWAPPED_CHANNELS;
1102 
1103 
1104 	/* Attach AC97 host interface */
1105 	sc->host_if.arg = self;
1106 	sc->host_if.attach = esa_attach_codec;
1107 	sc->host_if.read = esa_read_codec;
1108 	sc->host_if.write = esa_write_codec;
1109 	sc->host_if.reset = esa_reset_codec;
1110 	sc->host_if.flags = esa_flags_codec;
1111 
1112 	if (ac97_attach(&sc->host_if, self) != 0)
1113 		return;
1114 
1115 	/* initialize list management structures */
1116 	sc->mixer_list.mem_addr = ESA_KDATA_MIXER_XFER0;
1117 	sc->mixer_list.max = ESA_MAX_VIRTUAL_MIXER_CHANNELS;
1118 	sc->adc1_list.mem_addr = ESA_KDATA_ADC1_XFER0;
1119 	sc->adc1_list.max = ESA_MAX_VIRTUAL_ADC1_CHANNELS;
1120 	sc->dma_list.mem_addr = ESA_KDATA_DMA_XFER0;
1121 	sc->dma_list.max = ESA_MAX_VIRTUAL_DMA_CHANNELS;
1122 	sc->msrc_list.mem_addr = ESA_KDATA_INSTANCE0_MINISRC;
1123 	sc->msrc_list.max = ESA_MAX_INSTANCE_MINISRC;
1124 
1125 	/* initialize index maps */
1126 	for (i = 0; i < ESA_NUM_VOICES * 2; i++) {
1127 		sc->mixer_list.indexmap[i] = -1;
1128 		sc->msrc_list.indexmap[i] = -1;
1129 		sc->dma_list.indexmap[i] = -1;
1130 		sc->adc1_list.indexmap[i] = -1;
1131 	}
1132 	for (i = 0; i < ESA_NUM_VOICES; i++) {
1133 		sc->voice[i].parent = (struct device *)sc;
1134 		sc->voice[i].index = i;
1135 		sc->sc_audiodev[i] =
1136 		    audio_attach_mi(&esa_hw_if, &sc->voice[i], &sc->sc_dev);
1137 	}
1138 
1139 	sc->powerhook = powerhook_establish(sc->sc_dev.dv_xname,
1140 	    esa_powerhook, sc);
1141 	if (sc->powerhook == NULL)
1142 		aprint_error("%s: WARNING: unable to establish powerhook\n",
1143 		    sc->sc_dev.dv_xname);
1144 
1145 	return;
1146 }
1147 
1148 static int
1149 esa_detach(struct device *self, int flags)
1150 {
1151 	struct esa_softc *sc;
1152 	int i;
1153 
1154 	sc = (struct esa_softc *)self;
1155 	for (i = 0; i < ESA_NUM_VOICES; i++) {
1156 		if (sc->sc_audiodev[i] != NULL)
1157 			config_detach(sc->sc_audiodev[i], flags);
1158 	}
1159 
1160 	if (sc->sc_ih != NULL)
1161 		pci_intr_disestablish(sc->sc_pct, sc->sc_ih);
1162 	if (sc->sc_ios)
1163 		bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
1164 
1165 	free(sc->savemem, M_DEVBUF);
1166 
1167 	return 0;
1168 }
1169 
1170 static uint16_t
1171 esa_read_assp(struct esa_softc *sc, uint16_t region, uint16_t index)
1172 {
1173 	uint16_t data;
1174 	bus_space_tag_t iot;
1175 	bus_space_handle_t ioh;
1176 
1177 	iot = sc->sc_iot;
1178 	ioh = sc->sc_ioh;
1179 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
1180 	    region & ESA_MEMTYPE_MASK);
1181 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
1182 	data = bus_space_read_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA);
1183 
1184 	return data;
1185 }
1186 
1187 static void
1188 esa_write_assp(struct esa_softc *sc, uint16_t region, uint16_t index,
1189 	       uint16_t data)
1190 {
1191 	bus_space_tag_t iot;
1192 	bus_space_handle_t ioh;
1193 
1194 	iot = sc->sc_iot;
1195 	ioh = sc->sc_ioh;
1196 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
1197 	    region & ESA_MEMTYPE_MASK);
1198 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
1199 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA, data);
1200 
1201 	return;
1202 }
1203 
1204 static int
1205 esa_init_codec(struct esa_softc *sc)
1206 {
1207 	bus_space_tag_t iot;
1208 	bus_space_handle_t ioh;
1209 	uint32_t data;
1210 
1211 	iot = sc->sc_iot;
1212 	ioh = sc->sc_ioh;
1213 	data = bus_space_read_1(iot, ioh, ESA_CODEC_COMMAND);
1214 
1215 	return (data & 0x1) ? 0 : 1;
1216 }
1217 
1218 static int
1219 esa_attach_codec(void *aux, struct ac97_codec_if *codec_if)
1220 {
1221 	struct esa_softc *sc;
1222 
1223 	sc = aux;
1224 	sc->codec_if = codec_if;
1225 
1226 	return 0;
1227 }
1228 
1229 static int
1230 esa_read_codec(void *aux, uint8_t reg, uint16_t *result)
1231 {
1232 	struct esa_softc *sc;
1233 	bus_space_tag_t iot;
1234 	bus_space_handle_t ioh;
1235 
1236 	sc = aux;
1237 	iot = sc->sc_iot;
1238 	ioh = sc->sc_ioh;
1239 	if (esa_wait(sc))
1240 		printf("%s: esa_read_codec: timed out\n", sc->sc_dev.dv_xname);
1241 	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, (reg & 0x7f) | 0x80);
1242 	delay(50);
1243 	if (esa_wait(sc))
1244 		printf("%s: esa_read_codec: timed out\n", sc->sc_dev.dv_xname);
1245 	*result = bus_space_read_2(iot, ioh, ESA_CODEC_DATA);
1246 
1247 	return 0;
1248 }
1249 
1250 static int
1251 esa_write_codec(void *aux, uint8_t reg, uint16_t data)
1252 {
1253 	struct esa_softc *sc;
1254 	bus_space_tag_t iot;
1255 	bus_space_handle_t ioh;
1256 
1257 	sc = aux;
1258 	iot = sc->sc_iot;
1259 	ioh = sc->sc_ioh;
1260 	if (esa_wait(sc)) {
1261 		printf("%s: esa_write_codec: timed out\n", sc->sc_dev.dv_xname);
1262 		return -1;
1263 	}
1264 	bus_space_write_2(iot, ioh, ESA_CODEC_DATA, data);
1265 	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, reg & 0x7f);
1266 	delay(50);
1267 
1268 	return 0;
1269 }
1270 
1271 static int
1272 esa_reset_codec(void *aux __unused)
1273 {
1274 
1275 	return 0;
1276 }
1277 
1278 static enum ac97_host_flags
1279 esa_flags_codec(void *aux)
1280 {
1281 	struct esa_softc *sc;
1282 
1283 	sc = aux;
1284 	return sc->codec_flags;
1285 }
1286 
1287 static int
1288 esa_wait(struct esa_softc *sc)
1289 {
1290 	int i, val;
1291 	bus_space_tag_t iot;
1292 	bus_space_handle_t ioh;
1293 
1294 	iot = sc->sc_iot;
1295 	ioh = sc->sc_ioh;
1296 	for (i = 0; i < 20; i++) {
1297 		val = bus_space_read_1(iot, ioh, ESA_CODEC_STATUS);
1298 		if ((val & 1) == 0)
1299 			return 0;
1300 		delay(2);
1301 	}
1302 
1303 	return -1;
1304 }
1305 
1306 static int
1307 esa_init(struct esa_softc *sc)
1308 {
1309 	struct esa_voice *vc;
1310 	bus_space_tag_t iot;
1311 	bus_space_handle_t ioh;
1312 	pcitag_t tag;
1313 	pci_chipset_tag_t pc;
1314 	uint32_t data, i, size;
1315 	uint8_t reset_state;
1316 	int data_bytes;
1317 
1318 	iot = sc->sc_iot;
1319 	ioh = sc->sc_ioh;
1320 	tag = sc->sc_tag;
1321 	pc = sc->sc_pct;
1322 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
1323 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
1324 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
1325 
1326 	/* Disable legacy emulation */
1327 	data = pci_conf_read(pc, tag, PCI_LEGACY_AUDIO_CTRL);
1328 	data |= DISABLE_LEGACY;
1329 	pci_conf_write(pc, tag, PCI_LEGACY_AUDIO_CTRL, data);
1330 
1331 	esa_config(sc);
1332 
1333 	reset_state = esa_assp_halt(sc);
1334 
1335 	esa_init_codec(sc);
1336 	esa_codec_reset(sc);
1337 
1338 	/* Zero kernel and mixer data */
1339 	size = ESA_REV_B_DATA_MEMORY_UNIT_LENGTH * ESA_NUM_UNITS_KERNEL_DATA;
1340 	for (i = 0; i < size / 2; i++) {
1341 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1342 		    ESA_KDATA_BASE_ADDR + i, 0);
1343 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1344 		    ESA_KDATA_BASE_ADDR2 + i, 0);
1345 	}
1346 
1347 	/* Init DMA pointer */
1348 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_CURRENT_DMA,
1349 	    ESA_KDATA_DMA_XFER0);
1350 
1351 	/* Write kernel code into memory */
1352 	size = sizeof(esa_assp_kernel_image);
1353 	for (i = 0; i < size / 2; i++)
1354 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
1355 		    ESA_REV_B_CODE_MEMORY_BEGIN + i, esa_assp_kernel_image[i]);
1356 
1357 	size = sizeof(esa_assp_minisrc_image);
1358 	for (i = 0; i < size / 2; i++)
1359 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, 0x400 + i,
1360 		    esa_assp_minisrc_image[i]);
1361 
1362 	/* Write the coefficients for the low pass filter */
1363 	size = sizeof(esa_minisrc_lpf_image);
1364 	for (i = 0; i < size / 2; i++)
1365 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
1366 		    0x400 + ESA_MINISRC_COEF_LOC + i, esa_minisrc_lpf_image[i]);
1367 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
1368 	    0x400 + ESA_MINISRC_COEF_LOC + size, 0x8000);
1369 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_TASK0, 0x400);
1370 	/* Init the mixer number */
1371 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1372 	     ESA_KDATA_MIXER_TASK_NUMBER, 0);
1373 	/* Extreme kernel master volume */
1374 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1375 	    ESA_KDATA_DAC_LEFT_VOLUME, ESA_ARB_VOLUME);
1376 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1377 	    ESA_KDATA_DAC_RIGHT_VOLUME, ESA_ARB_VOLUME);
1378 
1379 	if (esa_amp_enable(sc))
1380 		return -1;
1381 
1382 	/* Zero entire DAC/ADC area */
1383 	for (i = 0x1100; i < 0x1c00; i++)
1384 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i, 0);
1385 
1386 	/* set some sane defaults */
1387 	for (i = 0; i < ESA_NUM_VOICES; i++) {
1388 		vc = &sc->voice[i];
1389 		vc->play.data_offset = ESA_DAC_DATA + (data_bytes * i);
1390 		vc->rec.data_offset = ESA_DAC_DATA + (data_bytes * i * 2);
1391 	}
1392 
1393 	esa_enable_interrupts(sc);
1394 
1395 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
1396 	    reset_state | ESA_REGB_ENABLE_RESET);
1397 
1398 	return 0;
1399 }
1400 
1401 static void
1402 esa_config(struct esa_softc *sc)
1403 {
1404 	bus_space_tag_t iot;
1405 	bus_space_handle_t ioh;
1406 	pcitag_t tag;
1407 	pci_chipset_tag_t pc;
1408 	uint32_t data;
1409 
1410 	iot = sc->sc_iot;
1411 	ioh = sc->sc_ioh;
1412 	tag = sc->sc_tag;
1413 	pc = sc->sc_pct;
1414 
1415 	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
1416 	data &= ESA_REDUCED_DEBOUNCE;
1417 	data |= ESA_PM_CTRL_ENABLE | ESA_CLK_DIV_BY_49 | ESA_USE_PCI_TIMING;
1418 	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
1419 
1420 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RESET_ASSP);
1421 	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
1422 	data &= ~ESA_INT_CLK_SELECT;
1423 	if (sc->type == ESS_MAESTRO3) {
1424 		data &= ~ESA_INT_CLK_MULT_ENABLE;
1425 		data |= ESA_INT_CLK_SRC_NOT_PCI;
1426 	}
1427 	data &= ~(ESA_CLK_MULT_MODE_SELECT | ESA_CLK_MULT_MODE_SELECT_2);
1428 	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
1429 
1430 	if (sc->type == ESS_ALLEGRO1) {
1431 		data = pci_conf_read(pc, tag, ESA_PCI_USER_CONFIG);
1432 		data |= ESA_IN_CLK_12MHZ_SELECT;
1433 		pci_conf_write(pc, tag, ESA_PCI_USER_CONFIG, data);
1434 	}
1435 
1436 	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_A);
1437 	data &= ~(ESA_DSP_CLK_36MHZ_SELECT | ESA_ASSP_CLK_49MHZ_SELECT);
1438 	data |= ESA_ASSP_CLK_49MHZ_SELECT;	/* XXX: Assumes 49MHz DSP */
1439 	data |= ESA_ASSP_0_WS_ENABLE;
1440 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_A, data);
1441 
1442 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RUN_ASSP);
1443 
1444 	return;
1445 }
1446 
1447 static uint8_t
1448 esa_assp_halt(struct esa_softc *sc)
1449 {
1450 	bus_space_tag_t iot;
1451 	bus_space_handle_t ioh;
1452 	uint8_t data, reset_state;
1453 
1454 	iot = sc->sc_iot;
1455 	ioh = sc->sc_ioh;
1456 	data = bus_space_read_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B);
1457 	reset_state = data & ~ESA_REGB_STOP_CLOCK;
1458 	delay(10000);
1459 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
1460 			reset_state & ~ESA_REGB_ENABLE_RESET);
1461 	delay(10000);
1462 
1463 	return reset_state;
1464 }
1465 
1466 static void
1467 esa_codec_reset(struct esa_softc *sc)
1468 {
1469 	bus_space_tag_t iot;
1470 	bus_space_handle_t ioh;
1471 	uint16_t data, dir;
1472 	int retry;
1473 
1474 	iot = sc->sc_iot;
1475 	ioh = sc->sc_ioh;
1476 	retry = 0;
1477 	do {
1478 		data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
1479 		dir = data | 0x10; /* assuming pci bus master? */
1480 
1481 		/* remote codec config */
1482 		data = bus_space_read_2(iot, ioh, ESA_RING_BUS_CTRL_B);
1483 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_B,
1484 		    data & ~ESA_SECOND_CODEC_ID_MASK);
1485 		data = bus_space_read_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL);
1486 		bus_space_write_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL,
1487 		    data & ~ESA_COMMAND_ADDR_OUT);
1488 		data = bus_space_read_2(iot, ioh, ESA_SDO_IN_DEST_CTRL);
1489 		bus_space_write_2(iot, ioh, ESA_SDO_IN_DEST_CTRL,
1490 		    data & ~ESA_STATUS_ADDR_IN);
1491 
1492 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
1493 				  ESA_IO_SRAM_ENABLE);
1494 		delay(20);
1495 
1496 		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
1497 		    dir & ~ESA_GPO_PRIMARY_AC97);
1498 		bus_space_write_2(iot, ioh, ESA_GPIO_MASK,
1499 				  ~ESA_GPO_PRIMARY_AC97);
1500 		bus_space_write_2(iot, ioh, ESA_GPIO_DATA, 0);
1501 		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
1502 		    dir | ESA_GPO_PRIMARY_AC97);
1503 		delay(sc->delay1 * 1000);
1504 		bus_space_write_2(iot, ioh, ESA_GPIO_DATA,
1505 				  ESA_GPO_PRIMARY_AC97);
1506 		delay(5);
1507 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
1508 		    ESA_IO_SRAM_ENABLE | ESA_SERIAL_AC_LINK_ENABLE);
1509 		bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
1510 		delay(sc->delay2 * 1000);
1511 
1512 		esa_read_codec(sc, 0x7c, &data);
1513 		if ((data == 0) || (data == 0xffff)) {
1514 			retry++;
1515 			if (retry > 3) {
1516 				printf("%s: esa_codec_reset: failed\n",
1517 				    sc->sc_dev.dv_xname);
1518 				break;
1519 			}
1520 			printf("%s: esa_codec_reset: retrying\n",
1521 			    sc->sc_dev.dv_xname);
1522 		} else
1523 			retry = 0;
1524 	} while (retry);
1525 
1526 	return;
1527 }
1528 
1529 static int
1530 esa_amp_enable(struct esa_softc *sc)
1531 {
1532 	bus_space_tag_t iot;
1533 	bus_space_handle_t ioh;
1534 	uint32_t gpo, polarity_port, polarity;
1535 	uint16_t data;
1536 
1537 	iot = sc->sc_iot;
1538 	ioh = sc->sc_ioh;
1539 	switch (sc->type) {
1540 	case ESS_ALLEGRO1:
1541 		polarity_port = 0x1800;
1542 		break;
1543 	case ESS_MAESTRO3:
1544 		polarity_port = 0x1100;
1545 		break;
1546 	default:
1547 		printf("%s: esa_amp_enable: Unknown chip type!!!\n",
1548 		    sc->sc_dev.dv_xname);
1549 		return 1;
1550 	}
1551 
1552 	gpo = (polarity_port >> 8) & 0x0f;
1553 	polarity = polarity_port >> 12;
1554 	polarity = !polarity;	/* Enable */
1555 	polarity = polarity << gpo;
1556 	gpo = 1 << gpo;
1557 	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~gpo);
1558 	data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
1559 	bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION, data | gpo);
1560 	data = ESA_GPO_SECONDARY_AC97 | ESA_GPO_PRIMARY_AC97 | polarity;
1561 	bus_space_write_2(iot, ioh, ESA_GPIO_DATA, data);
1562 	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
1563 
1564 	return 0;
1565 }
1566 
1567 static void
1568 esa_enable_interrupts(struct esa_softc *sc)
1569 {
1570 	bus_space_tag_t iot;
1571 	bus_space_handle_t ioh;
1572 	uint8_t data;
1573 
1574 	iot = sc->sc_iot;
1575 	ioh = sc->sc_ioh;
1576 	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
1577 	    ESA_ASSP_INT_ENABLE | ESA_HV_INT_ENABLE);
1578 	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_C);
1579 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C,
1580 	    data | ESA_ASSP_HOST_INT_ENABLE);
1581 }
1582 
1583 /*
1584  * List management
1585  */
1586 static int
1587 esa_add_list(struct esa_voice *vc, struct esa_list *el,
1588 	     uint16_t val, int index)
1589 {
1590 	struct esa_softc *sc;
1591 
1592 	sc = (struct esa_softc *)vc->parent;
1593 	el->indexmap[index] = el->currlen;
1594 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1595 		       el->mem_addr + el->currlen,
1596 		       val);
1597 
1598 	return el->currlen++;
1599 }
1600 
1601 static void
1602 esa_remove_list(struct esa_voice *vc, struct esa_list *el, int index)
1603 {
1604 	struct esa_softc *sc;
1605 	uint16_t val;
1606 	int lastindex;
1607 	int vindex;
1608 	int i;
1609 
1610 	sc = (struct esa_softc *)vc->parent;
1611 	lastindex = el->currlen - 1;
1612 	vindex = el->indexmap[index];
1613 
1614 	/* reset our virtual index */
1615 	el->indexmap[index] = -1;
1616 
1617 	if (vindex != lastindex) {
1618 		val = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1619 				    el->mem_addr + lastindex);
1620 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1621 			       el->mem_addr + vindex,
1622 			       val);
1623 		for (i = 0; i < ESA_NUM_VOICES * 2; i++)
1624 			if (el->indexmap[i] == lastindex)
1625 				break;
1626 		if (i >= ESA_NUM_VOICES * 2)
1627 			printf("%s: esa_remove_list: invalid task index\n",
1628 			       sc->sc_dev.dv_xname);
1629 		else
1630 			el->indexmap[i] = vindex;
1631 	}
1632 
1633 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1634 		       el->mem_addr + lastindex, 0);
1635 	el->currlen--;
1636 
1637 	return;
1638 }
1639 
1640 static void
1641 esa_powerhook(int why, void *hdl)
1642 {
1643 	struct esa_softc *sc;
1644 
1645 	sc = (struct esa_softc *)hdl;
1646 	switch (why) {
1647 	case PWR_SUSPEND:
1648 	case PWR_STANDBY:
1649 		esa_suspend(sc);
1650 		break;
1651 	case PWR_RESUME:
1652 		esa_resume(sc);
1653 		sc->codec_if->vtbl->restore_ports(sc->codec_if);
1654 		break;
1655 	}
1656 }
1657 
1658 static int
1659 esa_suspend(struct esa_softc *sc)
1660 {
1661 	bus_space_tag_t iot;
1662 	bus_space_handle_t ioh;
1663 	int i, index;
1664 
1665 	iot = sc->sc_iot;
1666 	ioh = sc->sc_ioh;
1667 	index = 0;
1668 
1669 	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL, 0);
1670 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C, 0);
1671 
1672 	esa_assp_halt(sc);
1673 
1674 	/* Save ASSP state */
1675 	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
1676 	    i++)
1677 		sc->savemem[index++] = esa_read_assp(sc,
1678 		    ESA_MEMTYPE_INTERNAL_CODE, i);
1679 	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
1680 	    i++)
1681 		sc->savemem[index++] = esa_read_assp(sc,
1682 		    ESA_MEMTYPE_INTERNAL_DATA, i);
1683 
1684 	return 0;
1685 }
1686 
1687 static int
1688 esa_resume(struct esa_softc *sc)
1689 {
1690 	bus_space_tag_t iot;
1691 	bus_space_handle_t ioh;
1692 	int i, index;
1693 	uint8_t reset_state;
1694 
1695 	iot = sc->sc_iot;
1696 	ioh = sc->sc_ioh;
1697 	index = 0;
1698 
1699 	delay(10000);
1700 
1701 	esa_config(sc);
1702 
1703 	reset_state = esa_assp_halt(sc);
1704 
1705 	esa_codec_reset(sc);
1706 
1707 	/* restore ASSP */
1708 	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
1709 	    i++)
1710 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, i,
1711 		    sc->savemem[index++]);
1712 	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
1713 	    i++)
1714 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i,
1715 		    sc->savemem[index++]);
1716 
1717 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_DMA_ACTIVE, 0);
1718 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
1719 	    reset_state | ESA_REGB_ENABLE_RESET);
1720 
1721 	esa_enable_interrupts(sc);
1722 	esa_amp_enable(sc);
1723 
1724 	return 0;
1725 }
1726 
1727 static uint32_t
1728 esa_get_pointer(struct esa_softc *sc, struct esa_channel *ch)
1729 {
1730 	uint16_t hi, lo;
1731 	uint32_t addr;
1732 	int data_offset;
1733 
1734 	data_offset = ch->data_offset;
1735 	hi = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
1736 	    ESA_CDATA_HOST_SRC_CURRENTH);
1737 	lo = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
1738 	    ESA_CDATA_HOST_SRC_CURRENTL);
1739 
1740 	addr = lo | ((uint32_t)hi << 16);
1741 	return (addr - ch->start);
1742 }
1743 
1744 static paddr_t
1745 esa_mappage(void *addr, void *mem, off_t off, int prot)
1746 {
1747 	struct esa_voice *vc;
1748 	struct esa_softc *sc;
1749 	struct esa_dma *p;
1750 
1751 	vc = addr;
1752 	sc = (struct esa_softc *)vc->parent;
1753 	if (off < 0)
1754 		return -1;
1755 	for (p = vc->dma; p && KERNADDR(p) != mem; p = p->next)
1756 		continue;
1757 	if (p == NULL)
1758 		return -1;
1759 	return bus_dmamem_mmap(sc->sc_dmat, p->segs, p->nsegs,
1760 			       off, prot, BUS_DMA_WAITOK);
1761 }
1762