xref: /netbsd-src/sys/dev/pci/esa.c (revision aaf4ece63a859a04e37cf3a7229b5fab0157cc06)
1 /* $NetBSD: esa.c,v 1.31 2005/12/11 12:22:49 christos Exp $ */
2 
3 /*
4  * Copyright (c) 2001, 2002 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 1.31 2005/12/11 12:22:49 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 *, struct esa_channel *);
156 
157 /* list management */
158 static int		esa_add_list(struct esa_voice *, struct esa_list *,
159 				     uint16_t, int);
160 static void		esa_remove_list(struct esa_voice *, struct esa_list *,
161 					int);
162 
163 /* power management */
164 static int		esa_power(struct esa_softc *, int);
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 };
227 
228 CFATTACH_DECL(esa, sizeof(struct esa_softc), esa_match, esa_attach,
229     esa_detach, NULL);
230 
231 /*
232  * audio(9) functions
233  */
234 
235 static int
236 esa_query_encoding(void *hdl, struct audio_encoding *ae)
237 {
238 
239 	if (ae->index < 0 || ae->index >= ESA_NENCODINGS)
240 		return EINVAL;
241 	*ae = esa_encoding[ae->index];
242 
243 	return 0;
244 }
245 
246 static int
247 esa_set_params(void *hdl, int setmode, int usemode,
248 	       audio_params_t *play, audio_params_t *rec,
249 	       stream_filter_list_t *pfil, stream_filter_list_t *rfil)
250 {
251 	struct esa_voice *vc;
252 	//struct esa_softc *sc = (struct esa_softc *)vc->parent;
253 	struct esa_channel *ch;
254 	struct audio_params *p;
255 	stream_filter_list_t *fil;
256 	int mode, i;
257 
258 	vc = hdl;
259 	for (mode = AUMODE_RECORD; mode != -1;
260 	     mode = (mode == AUMODE_RECORD) ? AUMODE_PLAY : -1) {
261 		if ((setmode & mode) == 0)
262 			continue;
263 
264 		switch (mode) {
265 		case AUMODE_PLAY:
266 			p = play;
267 			ch = &vc->play;
268 			fil = pfil;
269 			break;
270 		case AUMODE_RECORD:
271 			p = rec;
272 			ch = &vc->rec;
273 			fil = rfil;
274 			break;
275 		default:
276 			return EINVAL;
277 		}
278 
279 		if (p->sample_rate < ESA_MINRATE ||
280 		    p->sample_rate > ESA_MAXRATE ||
281 		    (p->precision != 8 && p->precision != 16) ||
282 		    (p->channels < 1 || p->channels > 2))
283 			return EINVAL;
284 
285 		i = auconv_set_converter(esa_formats, ESA_NFORMATS,
286 					 mode, p, FALSE, fil);
287 		if (i < 0)
288 			return EINVAL;
289 		if (fil->req_size > 0)
290 			p = &fil->filters[0].param;
291 		ch->mode = *p;
292 	}
293 
294 	return 0;
295 }
296 
297 static int
298 esa_commit_settings(void *hdl)
299 {
300 	struct esa_voice *vc;
301 	struct esa_softc *sc;
302 	const audio_params_t *p;
303 	const audio_params_t *r;
304 	uint32_t data;
305 	uint32_t freq;
306 	int data_bytes;
307 
308 	vc = hdl;
309 	sc = (struct esa_softc *)vc->parent;
310 	p = &vc->play.mode;
311 	r = &vc->rec.mode;
312 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
313 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
314 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255)
315 	    &~ 255;
316 	/* playback */
317 	vc->play.data_offset = ESA_DAC_DATA + (data_bytes * vc->index);
318 	if (p->channels == 1)
319 		data = 1;
320 	else
321 		data = 0;
322 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
323 		       vc->play.data_offset + ESA_SRC3_MODE_OFFSET,
324 		       data);
325 	if (p->precision  == 8)
326 		data = 1;
327 	else
328 		data = 0;
329 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
330 		       vc->play.data_offset + ESA_SRC3_WORD_LENGTH_OFFSET,
331 		       data);
332 	if ((freq = ((p->sample_rate << 15) + 24000) / 48000) != 0) {
333 		freq--;
334 	}
335 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
336 		       vc->play.data_offset + ESA_CDATA_FREQUENCY, freq);
337 
338 	/* recording */
339 	vc->rec.data_offset = ESA_DAC_DATA + (data_bytes * vc->index) +
340 			      (data_bytes / 2);
341 	if (r->channels == 1)
342 		data = 1;
343 	else
344 		data = 0;
345 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
346 		       vc->rec.data_offset + ESA_SRC3_MODE_OFFSET,
347 		       data);
348 	if (r->precision == 8)
349 		data = 1;
350 	else
351 		data = 0;
352 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
353 		       vc->rec.data_offset + ESA_SRC3_WORD_LENGTH_OFFSET,
354 		       data);
355 	if ((freq = ((r->sample_rate << 15) + 24000) / 48000) != 0) {
356 		freq--;
357 	}
358 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
359 		       vc->rec.data_offset + ESA_CDATA_FREQUENCY, freq);
360 
361 	return 0;
362 };
363 
364 static int
365 esa_round_blocksize(void *hdl, int bs, int mode, const audio_params_t *param)
366 {
367 
368 	return bs & ~0x20;	/* Be conservative; align to 32 bytes */
369 }
370 
371 static int
372 esa_halt_output(void *hdl)
373 {
374 	struct esa_voice *vc;
375 	struct esa_softc *sc;
376 	bus_space_tag_t iot;
377 	bus_space_handle_t ioh;
378 	uint16_t data;
379 
380 	vc = hdl;
381 	sc = (struct esa_softc *)vc->parent;
382 	iot = sc->sc_iot;
383 	ioh = sc->sc_ioh;
384 	if (vc->play.active == 0)
385 		return 0;
386 
387 	vc->play.active = 0;
388 
389 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
390 		       ESA_CDATA_INSTANCE_READY + vc->play.data_offset, 0);
391 
392 	sc->sc_ntimers--;
393 	if (sc->sc_ntimers == 0) {
394 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
395 			       ESA_KDATA_TIMER_COUNT_RELOAD, 0);
396 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
397 			       ESA_KDATA_TIMER_COUNT_CURRENT, 0);
398 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
399 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
400 		    data & ~ESA_CLKRUN_GEN_ENABLE);
401 	}
402 
403 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
404 		       ESA_KDATA_MIXER_TASK_NUMBER,
405 		       sc->mixer_list.indexmap[vc->index]);
406 	/* remove ourselves from the packed lists */
407 	esa_remove_list(vc, &sc->mixer_list, vc->index);
408 	esa_remove_list(vc, &sc->dma_list, vc->index);
409 	esa_remove_list(vc, &sc->msrc_list, vc->index);
410 
411 	return 0;
412 }
413 
414 static int
415 esa_halt_input(void *hdl)
416 {
417 	struct esa_voice *vc;
418 	struct esa_softc *sc;
419 	bus_space_tag_t iot;
420 	bus_space_handle_t ioh;
421 	uint32_t data;
422 
423 	vc = hdl;
424 	sc = (struct esa_softc *)vc->parent;
425 	iot = sc->sc_iot;
426 	ioh = sc->sc_ioh;
427 	if (vc->rec.active == 0)
428 		return 0;
429 
430 	vc->rec.active = 0;
431 
432 	sc->sc_ntimers--;
433 	if (sc->sc_ntimers == 0) {
434 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
435 			       ESA_KDATA_TIMER_COUNT_RELOAD, 0);
436 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
437 			       ESA_KDATA_TIMER_COUNT_CURRENT, 0);
438 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
439 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
440 				  data & ~ESA_CLKRUN_GEN_ENABLE);
441 	}
442 
443 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, vc->rec.data_offset +
444 		       ESA_CDATA_INSTANCE_READY, 0);
445 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_ADC1_REQUEST,
446 		       0);
447 
448 	/* remove ourselves from the packed lists */
449 	esa_remove_list(vc, &sc->adc1_list, vc->index + ESA_NUM_VOICES);
450 	esa_remove_list(vc, &sc->dma_list, vc->index + ESA_NUM_VOICES);
451 	esa_remove_list(vc, &sc->msrc_list, vc->index + ESA_NUM_VOICES);
452 
453 	return 0;
454 }
455 
456 static void *
457 esa_malloc(void *hdl, int direction, size_t size, struct malloc_type *type,
458     int flags)
459 {
460 	struct esa_voice *vc;
461 	struct esa_softc *sc;
462 	struct esa_dma *p;
463 	int error;
464 
465 	p = malloc(sizeof(*p), type, flags);
466 	if (p == NULL)
467 		return NULL;
468 	vc = hdl;
469 	sc = (struct esa_softc *)vc->parent;
470 	error = esa_allocmem(sc, size, 16, p);
471 	if (error) {
472 		free(p, type);
473 		printf("%s: esa_malloc: not enough memory\n",
474 		    sc->sc_dev.dv_xname);
475 		return 0;
476 	}
477 	p->next = vc->dma;
478 	vc->dma = p;
479 
480 	return KERNADDR(p);
481 }
482 
483 static void
484 esa_free(void *hdl, void *addr, struct malloc_type *type)
485 {
486 	struct esa_voice *vc;
487 	struct esa_softc *sc;
488 	struct esa_dma *p;
489 	struct esa_dma **pp;
490 
491 	vc = hdl;
492 	sc = (struct esa_softc *)vc->parent;
493 	for (pp = &vc->dma; (p = *pp) != NULL; pp = &p->next)
494 		if (KERNADDR(p) == addr) {
495 			esa_freemem(sc, p);
496 			*pp = p->next;
497 			free(p, type);
498 			return;
499 		}
500 }
501 
502 static int
503 esa_getdev(void *hdl, struct audio_device *ret)
504 {
505 
506 	*ret = esa_device;
507 	return 0;
508 }
509 
510 static int
511 esa_set_port(void *hdl, mixer_ctrl_t *mc)
512 {
513 	struct esa_voice *vc;
514 	struct esa_softc *sc;
515 
516 	vc = hdl;
517 	sc = (struct esa_softc *)vc->parent;
518 	return sc->codec_if->vtbl->mixer_set_port(sc->codec_if, mc);
519 }
520 
521 static int
522 esa_get_port(void *hdl, mixer_ctrl_t *mc)
523 {
524 	struct esa_voice *vc;
525 	struct esa_softc *sc;
526 
527 	vc = hdl;
528 	sc = (struct esa_softc *)vc->parent;
529 	return sc->codec_if->vtbl->mixer_get_port(sc->codec_if, mc);
530 }
531 
532 static int
533 esa_query_devinfo(void *hdl, mixer_devinfo_t *di)
534 {
535 	struct esa_voice *vc;
536 	struct esa_softc *sc;
537 
538 	vc = hdl;
539 	sc = (struct esa_softc *)vc->parent;
540 	return sc->codec_if->vtbl->query_devinfo(sc->codec_if, di);
541 }
542 
543 static size_t
544 esa_round_buffersize(void *hdl, int direction, size_t bufsize)
545 {
546 
547 	return bufsize;
548 }
549 
550 static int
551 esa_get_props(void *hdl)
552 {
553 
554 	return AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
555 }
556 
557 static int
558 esa_trigger_output(void *hdl, void *start, void *end, int blksize,
559 		   void (*intr)(void *), void *intrarg,
560 		   const audio_params_t *param)
561 {
562 	struct esa_voice *vc;
563 	struct esa_softc *sc;
564 	struct esa_dma *p;
565 	bus_space_tag_t iot;
566 	bus_space_handle_t ioh;
567 	size_t size;
568 	uint32_t data, bufaddr, i;
569 	int data_bytes, dac_data, dsp_in_size;
570 	int dsp_out_size, dsp_in_buf, dsp_out_buf;
571 
572 	vc = hdl;
573 	sc = (struct esa_softc *)vc->parent;
574 	iot = sc->sc_iot;
575 	ioh = sc->sc_ioh;
576 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
577 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
578 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
579 	dac_data = ESA_DAC_DATA + (data_bytes * vc->index);
580 	dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x20 * 2);
581 	dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x20 * 2);
582 	dsp_in_buf = dac_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
583 	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
584 
585 	if (vc->play.active)
586 		return EINVAL;
587 
588 	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
589 		continue;
590 	if (p == NULL) {
591 		printf("%s: esa_trigger_output: bad addr %p\n",
592 		    sc->sc_dev.dv_xname, start);
593 		return EINVAL;
594 	}
595 
596 	vc->play.active = 1;
597 	vc->play.intr = intr;
598 	vc->play.arg = intrarg;
599 	vc->play.pos = 0;
600 	vc->play.count = 0;
601 	vc->play.buf = start;
602 	vc->play.bufsize = size = (size_t)(((caddr_t)end - (caddr_t)start));
603 	vc->play.blksize = blksize;
604 	bufaddr = DMAADDR(p);
605 	vc->play.start = bufaddr;
606 
607 #define LO(x) ((x) & 0x0000ffff)
608 #define HI(x) ((x) >> 16)
609 
610 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
611 	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
612 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
613 	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
614 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
615 	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
616 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
617 	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
618 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
619 	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
620 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
621 	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
622 
623 	/* DSP buffers */
624 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
625 	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
626 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
627 	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
628 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
629 	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
630 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
631 	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
632 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
633 	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
634 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
635 	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
636 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
637 	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
638 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
639 	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
640 
641 	/* Some per-client initializers */
642 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
643 	    ESA_SRC3_DIRECTION_OFFSET + 12, dac_data + 40 + 8);
644 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
645 	    ESA_SRC3_DIRECTION_OFFSET + 19, 0x400 + ESA_MINISRC_COEF_LOC);
646 	/* Enable or disable low-pass filter? (0xff if rate > 45000) */
647 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
648 	    ESA_SRC3_DIRECTION_OFFSET + 22,
649 	    vc->play.mode.sample_rate > 45000 ? 0xff : 0);
650 	/* Tell it which way DMA is going */
651 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
652 	    ESA_CDATA_DMA_CONTROL,
653 	    ESA_DMACONTROL_AUTOREPEAT + ESA_DMAC_PAGE3_SELECTOR +
654 	    ESA_DMAC_BLOCKF_SELECTOR);
655 
656 	/* Set an armload of static initializers */
657 	for (i = 0; i < (sizeof(esa_playvals) / sizeof(esa_playvals[0])); i++)
658 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
659 		    esa_playvals[i].addr, esa_playvals[i].val);
660 
661 	/* Put us in the packed task lists */
662 	esa_add_list(vc, &sc->msrc_list, dac_data >> ESA_DP_SHIFT_COUNT,
663 		     vc->index);
664 	esa_add_list(vc, &sc->dma_list, dac_data >> ESA_DP_SHIFT_COUNT,
665 		     vc->index);
666 	esa_add_list(vc, &sc->mixer_list, dac_data >> ESA_DP_SHIFT_COUNT,
667 		     vc->index);
668 #undef LO
669 #undef HI
670 
671 	/* XXX */
672 	//esa_commit_settings(vc);
673 
674 	sc->sc_ntimers++;
675 
676 	if (sc->sc_ntimers == 1) {
677 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
678 		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
679 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
680 		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
681 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
682 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
683 		    data | ESA_CLKRUN_GEN_ENABLE);
684 	}
685 
686 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, dac_data +
687 	    ESA_CDATA_INSTANCE_READY, 1);
688 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
689 	    ESA_KDATA_MIXER_TASK_NUMBER,
690 	    sc->mixer_list.indexmap[vc->index]);
691 
692 	return 0;
693 }
694 
695 static int
696 esa_trigger_input(void *hdl, void *start, void *end, int blksize,
697 		  void (*intr)(void *), void *intrarg,
698 		  const audio_params_t *param)
699 {
700 	struct esa_voice *vc;
701 	struct esa_softc *sc;
702 	struct esa_dma *p;
703 	bus_space_tag_t iot;
704 	bus_space_handle_t ioh;
705 	uint32_t data, bufaddr, i;
706 	size_t size;
707 	int data_bytes, adc_data, dsp_in_size;
708 	int dsp_out_size, dsp_in_buf, dsp_out_buf;
709 
710 	vc = hdl;
711 	sc = (struct esa_softc *)vc->parent;
712 	iot = sc->sc_iot;
713 	ioh = sc->sc_ioh;
714 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
715 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
716 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
717 	adc_data = ESA_DAC_DATA + (data_bytes * vc->index) + (data_bytes / 2);
718 	dsp_in_size = ESA_MINISRC_IN_BUFFER_SIZE - (0x10 * 2);
719 	dsp_out_size = ESA_MINISRC_OUT_BUFFER_SIZE - (0x10 * 2);
720 	dsp_in_buf = adc_data + (ESA_MINISRC_TMP_BUFFER_SIZE / 2);
721 	dsp_out_buf = dsp_in_buf + (dsp_in_size / 2) + 1;
722 
723 	vc->rec.data_offset = adc_data;
724 
725 	/* We only support 1 recording channel */
726 	if (vc->index > 0)
727 		return ENODEV;
728 
729 	if (vc->rec.active)
730 		return EINVAL;
731 
732 	for (p = vc->dma; p && KERNADDR(p) != start; p = p->next)
733 		continue;
734 	if (p == NULL) {
735 		printf("%s: esa_trigger_input: bad addr %p\n",
736 		    sc->sc_dev.dv_xname, start);
737 		return EINVAL;
738 	}
739 
740 	vc->rec.active = 1;
741 	vc->rec.intr = intr;
742 	vc->rec.arg = intrarg;
743 	vc->rec.pos = 0;
744 	vc->rec.count = 0;
745 	vc->rec.buf = start;
746 	vc->rec.bufsize = size = (size_t)(((caddr_t)end - (caddr_t)start));
747 	vc->rec.blksize = blksize;
748 	bufaddr = DMAADDR(p);
749 	vc->rec.start = bufaddr;
750 
751 #define LO(x) ((x) & 0x0000ffff)
752 #define HI(x) ((x) >> 16)
753 
754 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
755 	    ESA_CDATA_HOST_SRC_ADDRL, LO(bufaddr));
756 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
757 	    ESA_CDATA_HOST_SRC_ADDRH, HI(bufaddr));
758 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
759 	    ESA_CDATA_HOST_SRC_END_PLUS_1L, LO(bufaddr + size));
760 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
761 	    ESA_CDATA_HOST_SRC_END_PLUS_1H, HI(bufaddr + size));
762 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
763 	    ESA_CDATA_HOST_SRC_CURRENTL, LO(bufaddr));
764 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
765 	    ESA_CDATA_HOST_SRC_CURRENTH, HI(bufaddr));
766 
767 	/* DSP buffers */
768 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
769 	    ESA_CDATA_IN_BUF_BEGIN, dsp_in_buf);
770 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
771 	    ESA_CDATA_IN_BUF_END_PLUS_1, dsp_in_buf + (dsp_in_size / 2));
772 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
773 	    ESA_CDATA_IN_BUF_HEAD, dsp_in_buf);
774 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
775 	    ESA_CDATA_IN_BUF_TAIL, dsp_in_buf);
776 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
777 	    ESA_CDATA_OUT_BUF_BEGIN, dsp_out_buf);
778 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
779 	    ESA_CDATA_OUT_BUF_END_PLUS_1, dsp_out_buf + (dsp_out_size / 2));
780 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
781 	    ESA_CDATA_OUT_BUF_HEAD, dsp_out_buf);
782 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
783 	    ESA_CDATA_OUT_BUF_TAIL, dsp_out_buf);
784 
785 	/* Some per-client initializers */
786 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
787 	    ESA_SRC3_DIRECTION_OFFSET + 12, adc_data + 40 + 8);
788 	/* Tell it which way DMA is going */
789 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
790 	    ESA_CDATA_DMA_CONTROL,
791 	    ESA_DMACONTROL_DIRECTION + ESA_DMACONTROL_AUTOREPEAT +
792 	    ESA_DMAC_PAGE3_SELECTOR + ESA_DMAC_BLOCKF_SELECTOR);
793 
794 	/* Set an armload of static initializers */
795 	for (i = 0; i < (sizeof(esa_recvals) / sizeof(esa_recvals[0])); i++)
796 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
797 		    esa_recvals[i].addr, esa_recvals[i].val);
798 
799 	/* Put us in the packed task lists */
800 	esa_add_list(vc, &sc->adc1_list, adc_data >> ESA_DP_SHIFT_COUNT,
801 		     vc->index + ESA_NUM_VOICES);
802 	esa_add_list(vc, &sc->msrc_list, adc_data >> ESA_DP_SHIFT_COUNT,
803 		     vc->index + ESA_NUM_VOICES);
804 	esa_add_list(vc, &sc->dma_list, adc_data >> ESA_DP_SHIFT_COUNT,
805 		     vc->index + ESA_NUM_VOICES);
806 #undef LO
807 #undef HI
808 
809 	/* XXX */
810 	//esa_commit_settings(vc);
811 
812 	sc->sc_ntimers++;
813 	if (sc->sc_ntimers == 1) {
814 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
815 		    ESA_KDATA_TIMER_COUNT_RELOAD, 240);
816 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
817 		    ESA_KDATA_TIMER_COUNT_CURRENT, 240);
818 		data = bus_space_read_2(iot, ioh, ESA_HOST_INT_CTRL);
819 		bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
820 		    data | ESA_CLKRUN_GEN_ENABLE);
821 	}
822 
823 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, adc_data +
824 	    ESA_CDATA_INSTANCE_READY, 1);
825 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_ADC1_REQUEST,
826 	    1);
827 
828 	return 0;
829 }
830 
831 /* Interrupt handler */
832 static int
833 esa_intr(void *hdl)
834 {
835 	struct esa_softc *sc;
836 	struct esa_voice *vc;
837 	bus_space_tag_t iot;
838 	bus_space_handle_t ioh;
839 	uint8_t status;
840 	uint32_t pos;
841 	uint32_t diff;
842 	uint32_t blksize;
843 	int i;
844 
845 	sc = hdl;
846 	iot = sc->sc_iot;
847 	ioh = sc->sc_ioh;
848 
849 	status = bus_space_read_1(iot, ioh, ESA_HOST_INT_STATUS);
850 	if (status == 0xff)
851 		return 0;
852 
853 	/* ack the interrupt */
854 	bus_space_write_1(iot, ioh, ESA_HOST_INT_STATUS, status);
855 
856 	if (status & ESA_HV_INT_PENDING) {
857 		uint8_t event;
858 
859 		printf("%s: hardware volume interrupt\n", sc->sc_dev.dv_xname);
860 		event = bus_space_read_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER);
861 		switch(event) {
862 		case 0x99:
863 		case 0xaa:
864 		case 0x66:
865 		case 0x88:
866 			printf("%s: esa_intr: FIXME\n", sc->sc_dev.dv_xname);
867 			break;
868 		default:
869 			printf("%s: unknown hwvol event 0x%02x\n",
870 			    sc->sc_dev.dv_xname, event);
871 			break;
872 		}
873 		bus_space_write_1(iot, ioh, ESA_HW_VOL_COUNTER_MASTER, 0x88);
874 	}
875 
876 	if ((status & ESA_ASSP_INT_PENDING) == 0 ||
877 	    (bus_space_read_1(iot, ioh,
878 	     ESA_ASSP_CONTROL_B) & ESA_STOP_ASSP_CLOCK) != 0 ||
879 	    (bus_space_read_1(iot, ioh,
880 	     ESA_ASSP_HOST_INT_STATUS) & ESA_DSP2HOST_REQ_TIMER) == 0)
881 		return 1;
882 
883 	bus_space_write_1(iot, ioh, ESA_ASSP_HOST_INT_STATUS,
884 	    ESA_DSP2HOST_REQ_TIMER);
885 
886 	for (i = 0; i < ESA_NUM_VOICES; i++) {
887 		vc = &sc->voice[i];
888 
889 		if (vc->play.active) {
890 			pos = esa_get_pointer(sc, &vc->play) % vc->play.bufsize;
891 			diff = (vc->play.bufsize + pos - vc->play.pos) %
892 			    vc->play.bufsize;
893 
894 			vc->play.pos = pos;
895 			vc->play.count += diff;
896 			blksize = vc->play.blksize;
897 
898 			while (vc->play.count >= blksize) {
899 				vc->play.count -= blksize;
900 				(*vc->play.intr)(vc->play.arg);
901 			}
902 		}
903 
904 		if (vc->rec.active) {
905 			pos = esa_get_pointer(sc, &vc->rec) % vc->rec.bufsize;
906 			diff = (vc->rec.bufsize + pos - vc->rec.pos) %
907 			    vc->rec.bufsize;
908 
909 			vc->rec.pos = pos;
910 			vc->rec.count += diff;
911 			blksize = vc->rec.blksize;
912 
913 			while (vc->rec.count >= blksize) {
914 				vc->rec.count -= blksize;
915 				(*vc->rec.intr)(vc->rec.arg);
916 			}
917 		}
918 	}
919 
920 	return 1;
921 }
922 
923 static int
924 esa_allocmem(struct esa_softc *sc, size_t size, size_t align,
925 	     struct esa_dma *p)
926 {
927 	int error;
928 
929 	p->size = size;
930 	error = bus_dmamem_alloc(sc->sc_dmat, p->size, align, 0,
931 				 p->segs, sizeof(p->segs) / sizeof(p->segs[0]),
932 				 &p->nsegs, BUS_DMA_NOWAIT);
933 	if (error)
934 		return error;
935 
936 	error = bus_dmamem_map(sc->sc_dmat, p->segs, p->nsegs, p->size,
937 				&p->addr, BUS_DMA_NOWAIT | BUS_DMA_COHERENT);
938 	if (error)
939 		goto free;
940 
941 	error = bus_dmamap_create(sc->sc_dmat, p->size, 1, p->size, 0,
942 				  BUS_DMA_NOWAIT, &p->map);
943 	if (error)
944 		goto unmap;
945 
946 	error = bus_dmamap_load(sc->sc_dmat, p->map, p->addr, p->size, NULL,
947 				BUS_DMA_NOWAIT);
948 	if (error)
949 		goto destroy;
950 
951 	return 0;
952 
953 destroy:
954 	bus_dmamap_destroy(sc->sc_dmat, p->map);
955 unmap:
956 	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
957 free:
958 	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
959 
960 	return error;
961 }
962 
963 static int
964 esa_freemem(struct esa_softc *sc, struct esa_dma *p)
965 {
966 
967 	bus_dmamap_unload(sc->sc_dmat, p->map);
968 	bus_dmamap_destroy(sc->sc_dmat, p->map);
969 	bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
970 	bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
971 
972 	return 0;
973 }
974 
975 /*
976  * Supporting Subroutines
977  */
978 
979 static int
980 esa_match(struct device *dev, struct cfdata *match, void *aux)
981 {
982 	struct pci_attach_args *pa;
983 
984 	pa = (struct pci_attach_args *)aux;
985 	switch (PCI_VENDOR(pa->pa_id)) {
986 	case PCI_VENDOR_ESSTECH:
987 		switch(PCI_PRODUCT(pa->pa_id)) {
988 		case PCI_PRODUCT_ESSTECH_ALLEGRO1:
989 		case PCI_PRODUCT_ESSTECH_MAESTRO3:
990 		case PCI_PRODUCT_ESSTECH_MAESTRO3_2:
991 			return 1;
992 		}
993 	}
994 
995 	return 0;
996 }
997 
998 static void
999 esa_attach(struct device *parent, struct device *self, void *aux)
1000 {
1001 	struct esa_softc *sc;
1002 	struct pci_attach_args *pa;
1003 	pcitag_t tag;
1004 	pci_chipset_tag_t pc;
1005 	pci_intr_handle_t ih;
1006 	const struct esa_card_type *card;
1007 	const char *intrstr;
1008 	uint32_t data;
1009 	char devinfo[256];
1010 	int revision, len;
1011 	int i;
1012 
1013 	sc = (struct esa_softc *)self;
1014 	pa = (struct pci_attach_args *)aux;
1015 	tag = pa->pa_tag;
1016 	pc = pa->pa_pc;
1017 	aprint_naive(": Audio controller\n");
1018 
1019 	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
1020 	revision = PCI_REVISION(pa->pa_class);
1021 	aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision);
1022 
1023 	for (card = esa_card_types; card->pci_vendor_id; card++)
1024 		if (PCI_VENDOR(pa->pa_id) == card->pci_vendor_id &&
1025 		    PCI_PRODUCT(pa->pa_id) == card->pci_product_id) {
1026 			sc->type = card->type;
1027 			sc->delay1 = card->delay1;
1028 			sc->delay2 = card->delay2;
1029 			break;
1030 		}
1031 
1032 	data = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
1033 	data |= (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE
1034 	    | PCI_COMMAND_MASTER_ENABLE);
1035 	pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, data);
1036 
1037 	/* Map I/O register */
1038 	if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
1039 	    &sc->sc_iot, &sc->sc_ioh, &sc->sc_iob, &sc->sc_ios)) {
1040 		aprint_error("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
1041 		return;
1042 	}
1043 
1044 	/* Initialize softc */
1045 	sc->sc_tag = tag;
1046 	sc->sc_pct = pc;
1047 	sc->sc_dmat = pa->pa_dmat;
1048 
1049 	/* Map and establish an interrupt */
1050 	if (pci_intr_map(pa, &ih)) {
1051 		aprint_error("%s: can't map interrupt\n", sc->sc_dev.dv_xname);
1052 		return;
1053 	}
1054 	intrstr = pci_intr_string(pc, ih);
1055 	sc->sc_ih = pci_intr_establish(pc, ih, IPL_AUDIO, esa_intr, self);
1056 	if (sc->sc_ih == NULL) {
1057 		aprint_error("%s: can't establish interrupt",
1058 		    sc->sc_dev.dv_xname);
1059 		if (intrstr != NULL)
1060 			aprint_normal(" at %s", intrstr);
1061 		aprint_normal("\n");
1062 		return;
1063 	}
1064 	aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
1065 
1066 	/* Power up chip */
1067 	esa_power(sc, PCI_PMCSR_STATE_D0);
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 	sc->codec_flags = AC97_HOST_SWAPPED_CHANNELS;
1096 
1097 	/* Attach AC97 host interface */
1098 	sc->host_if.arg = self;
1099 	sc->host_if.attach = esa_attach_codec;
1100 	sc->host_if.read = esa_read_codec;
1101 	sc->host_if.write = esa_write_codec;
1102 	sc->host_if.reset = esa_reset_codec;
1103 	sc->host_if.flags = esa_flags_codec;
1104 
1105 	if (ac97_attach(&sc->host_if, self) != 0)
1106 		return;
1107 
1108 	/* initialize list management structures */
1109 	sc->mixer_list.mem_addr = ESA_KDATA_MIXER_XFER0;
1110 	sc->mixer_list.max = ESA_MAX_VIRTUAL_MIXER_CHANNELS;
1111 	sc->adc1_list.mem_addr = ESA_KDATA_ADC1_XFER0;
1112 	sc->adc1_list.max = ESA_MAX_VIRTUAL_ADC1_CHANNELS;
1113 	sc->dma_list.mem_addr = ESA_KDATA_DMA_XFER0;
1114 	sc->dma_list.max = ESA_MAX_VIRTUAL_DMA_CHANNELS;
1115 	sc->msrc_list.mem_addr = ESA_KDATA_INSTANCE0_MINISRC;
1116 	sc->msrc_list.max = ESA_MAX_INSTANCE_MINISRC;
1117 
1118 	/* initialize index maps */
1119 	for (i = 0; i < ESA_NUM_VOICES * 2; i++) {
1120 		sc->mixer_list.indexmap[i] = -1;
1121 		sc->msrc_list.indexmap[i] = -1;
1122 		sc->dma_list.indexmap[i] = -1;
1123 		sc->adc1_list.indexmap[i] = -1;
1124 	}
1125 	for (i = 0; i < ESA_NUM_VOICES; i++) {
1126 		sc->voice[i].parent = (struct device *)sc;
1127 		sc->voice[i].index = i;
1128 		sc->sc_audiodev[i] =
1129 		    audio_attach_mi(&esa_hw_if, &sc->voice[i], &sc->sc_dev);
1130 	}
1131 
1132 	sc->powerhook = powerhook_establish(esa_powerhook, sc);
1133 	if (sc->powerhook == NULL)
1134 		aprint_error("%s: WARNING: unable to establish powerhook\n",
1135 		    sc->sc_dev.dv_xname);
1136 
1137 	return;
1138 }
1139 
1140 static int
1141 esa_detach(struct device *self, int flags)
1142 {
1143 	struct esa_softc *sc;
1144 	int i;
1145 
1146 	sc = (struct esa_softc *)self;
1147 	for (i = 0; i < ESA_NUM_VOICES; i++) {
1148 		if (sc->sc_audiodev[i] != NULL)
1149 			config_detach(sc->sc_audiodev[i], flags);
1150 	}
1151 
1152 	if (sc->sc_ih != NULL)
1153 		pci_intr_disestablish(sc->sc_pct, sc->sc_ih);
1154 	if (sc->sc_ios)
1155 		bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
1156 
1157 	free(sc->savemem, M_DEVBUF);
1158 
1159 	return 0;
1160 }
1161 
1162 static uint16_t
1163 esa_read_assp(struct esa_softc *sc, uint16_t region, uint16_t index)
1164 {
1165 	uint16_t data;
1166 	bus_space_tag_t iot;
1167 	bus_space_handle_t ioh;
1168 
1169 	iot = sc->sc_iot;
1170 	ioh = sc->sc_ioh;
1171 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
1172 	    region & ESA_MEMTYPE_MASK);
1173 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
1174 	data = bus_space_read_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA);
1175 
1176 	return data;
1177 }
1178 
1179 static void
1180 esa_write_assp(struct esa_softc *sc, uint16_t region, uint16_t index,
1181 	       uint16_t data)
1182 {
1183 	bus_space_tag_t iot;
1184 	bus_space_handle_t ioh;
1185 
1186 	iot = sc->sc_iot;
1187 	ioh = sc->sc_ioh;
1188 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_TYPE,
1189 	    region & ESA_MEMTYPE_MASK);
1190 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_INDEX, index);
1191 	bus_space_write_2(iot, ioh, ESA_DSP_PORT_MEMORY_DATA, data);
1192 
1193 	return;
1194 }
1195 
1196 static int
1197 esa_init_codec(struct esa_softc *sc)
1198 {
1199 	bus_space_tag_t iot;
1200 	bus_space_handle_t ioh;
1201 	uint32_t data;
1202 
1203 	iot = sc->sc_iot;
1204 	ioh = sc->sc_ioh;
1205 	data = bus_space_read_1(iot, ioh, ESA_CODEC_COMMAND);
1206 
1207 	return (data & 0x1) ? 0 : 1;
1208 }
1209 
1210 static int
1211 esa_attach_codec(void *aux, struct ac97_codec_if *codec_if)
1212 {
1213 	struct esa_softc *sc;
1214 
1215 	sc = aux;
1216 	sc->codec_if = codec_if;
1217 
1218 	return 0;
1219 }
1220 
1221 static int
1222 esa_read_codec(void *aux, uint8_t reg, uint16_t *result)
1223 {
1224 	struct esa_softc *sc;
1225 	bus_space_tag_t iot;
1226 	bus_space_handle_t ioh;
1227 
1228 	sc = aux;
1229 	iot = sc->sc_iot;
1230 	ioh = sc->sc_ioh;
1231 	if (esa_wait(sc))
1232 		printf("%s: esa_read_codec: timed out\n", sc->sc_dev.dv_xname);
1233 	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, (reg & 0x7f) | 0x80);
1234 	delay(50);
1235 	if (esa_wait(sc))
1236 		printf("%s: esa_read_codec: timed out\n", sc->sc_dev.dv_xname);
1237 	*result = bus_space_read_2(iot, ioh, ESA_CODEC_DATA);
1238 
1239 	return 0;
1240 }
1241 
1242 static int
1243 esa_write_codec(void *aux, uint8_t reg, uint16_t data)
1244 {
1245 	struct esa_softc *sc;
1246 	bus_space_tag_t iot;
1247 	bus_space_handle_t ioh;
1248 
1249 	sc = aux;
1250 	iot = sc->sc_iot;
1251 	ioh = sc->sc_ioh;
1252 	if (esa_wait(sc)) {
1253 		printf("%s: esa_write_codec: timed out\n", sc->sc_dev.dv_xname);
1254 		return -1;
1255 	}
1256 	bus_space_write_2(iot, ioh, ESA_CODEC_DATA, data);
1257 	bus_space_write_1(iot, ioh, ESA_CODEC_COMMAND, reg & 0x7f);
1258 	delay(50);
1259 
1260 	return 0;
1261 }
1262 
1263 static int
1264 esa_reset_codec(void *aux)
1265 {
1266 
1267 	return 0;
1268 }
1269 
1270 static enum ac97_host_flags
1271 esa_flags_codec(void *aux)
1272 {
1273 	struct esa_softc *sc;
1274 
1275 	sc = aux;
1276 	return sc->codec_flags;
1277 }
1278 
1279 static int
1280 esa_wait(struct esa_softc *sc)
1281 {
1282 	int i, val;
1283 	bus_space_tag_t iot;
1284 	bus_space_handle_t ioh;
1285 
1286 	iot = sc->sc_iot;
1287 	ioh = sc->sc_ioh;
1288 	for (i = 0; i < 20; i++) {
1289 		val = bus_space_read_1(iot, ioh, ESA_CODEC_STATUS);
1290 		if ((val & 1) == 0)
1291 			return 0;
1292 		delay(2);
1293 	}
1294 
1295 	return -1;
1296 }
1297 
1298 static int
1299 esa_init(struct esa_softc *sc)
1300 {
1301 	struct esa_voice *vc;
1302 	bus_space_tag_t iot;
1303 	bus_space_handle_t ioh;
1304 	pcitag_t tag;
1305 	pci_chipset_tag_t pc;
1306 	uint32_t data, i, size;
1307 	uint8_t reset_state;
1308 	int data_bytes;
1309 
1310 	iot = sc->sc_iot;
1311 	ioh = sc->sc_ioh;
1312 	tag = sc->sc_tag;
1313 	pc = sc->sc_pct;
1314 	data_bytes = (((ESA_MINISRC_TMP_BUFFER_SIZE & ~1) +
1315 	    (ESA_MINISRC_IN_BUFFER_SIZE & ~1) +
1316 	    (ESA_MINISRC_OUT_BUFFER_SIZE & ~1) + 4) + 255) & ~255;
1317 
1318 	/* Disable legacy emulation */
1319 	data = pci_conf_read(pc, tag, PCI_LEGACY_AUDIO_CTRL);
1320 	data |= DISABLE_LEGACY;
1321 	pci_conf_write(pc, tag, PCI_LEGACY_AUDIO_CTRL, data);
1322 
1323 	esa_config(sc);
1324 
1325 	reset_state = esa_assp_halt(sc);
1326 
1327 	esa_init_codec(sc);
1328 	esa_codec_reset(sc);
1329 
1330 	/* Zero kernel and mixer data */
1331 	size = ESA_REV_B_DATA_MEMORY_UNIT_LENGTH * ESA_NUM_UNITS_KERNEL_DATA;
1332 	for (i = 0; i < size / 2; i++) {
1333 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1334 		    ESA_KDATA_BASE_ADDR + i, 0);
1335 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1336 		    ESA_KDATA_BASE_ADDR2 + i, 0);
1337 	}
1338 
1339 	/* Init DMA pointer */
1340 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_CURRENT_DMA,
1341 	    ESA_KDATA_DMA_XFER0);
1342 
1343 	/* Write kernel code into memory */
1344 	size = sizeof(esa_assp_kernel_image);
1345 	for (i = 0; i < size / 2; i++)
1346 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
1347 		    ESA_REV_B_CODE_MEMORY_BEGIN + i, esa_assp_kernel_image[i]);
1348 
1349 	size = sizeof(esa_assp_minisrc_image);
1350 	for (i = 0; i < size / 2; i++)
1351 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, 0x400 + i,
1352 		    esa_assp_minisrc_image[i]);
1353 
1354 	/* Write the coefficients for the low pass filter */
1355 	size = sizeof(esa_minisrc_lpf_image);
1356 	for (i = 0; i < size / 2; i++)
1357 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
1358 		    0x400 + ESA_MINISRC_COEF_LOC + i, esa_minisrc_lpf_image[i]);
1359 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE,
1360 	    0x400 + ESA_MINISRC_COEF_LOC + size, 0x8000);
1361 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_TASK0, 0x400);
1362 	/* Init the mixer number */
1363 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1364 	     ESA_KDATA_MIXER_TASK_NUMBER, 0);
1365 	/* Extreme kernel master volume */
1366 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1367 	    ESA_KDATA_DAC_LEFT_VOLUME, ESA_ARB_VOLUME);
1368 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1369 	    ESA_KDATA_DAC_RIGHT_VOLUME, ESA_ARB_VOLUME);
1370 
1371 	if (esa_amp_enable(sc))
1372 		return -1;
1373 
1374 	/* Zero entire DAC/ADC area */
1375 	for (i = 0x1100; i < 0x1c00; i++)
1376 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i, 0);
1377 
1378 	/* set some sane defaults */
1379 	for (i = 0; i < ESA_NUM_VOICES; i++) {
1380 		vc = &sc->voice[i];
1381 		vc->play.data_offset = ESA_DAC_DATA + (data_bytes * i);
1382 		vc->rec.data_offset = ESA_DAC_DATA + (data_bytes * i * 2);
1383 	}
1384 
1385 	esa_enable_interrupts(sc);
1386 
1387 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
1388 	    reset_state | ESA_REGB_ENABLE_RESET);
1389 
1390 	return 0;
1391 }
1392 
1393 static void
1394 esa_config(struct esa_softc *sc)
1395 {
1396 	bus_space_tag_t iot;
1397 	bus_space_handle_t ioh;
1398 	pcitag_t tag;
1399 	pci_chipset_tag_t pc;
1400 	uint32_t data;
1401 
1402 	iot = sc->sc_iot;
1403 	ioh = sc->sc_ioh;
1404 	tag = sc->sc_tag;
1405 	pc = sc->sc_pct;
1406 
1407 	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
1408 	data &= ESA_REDUCED_DEBOUNCE;
1409 	data |= ESA_PM_CTRL_ENABLE | ESA_CLK_DIV_BY_49 | ESA_USE_PCI_TIMING;
1410 	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
1411 
1412 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RESET_ASSP);
1413 	data = pci_conf_read(pc, tag, ESA_PCI_ALLEGRO_CONFIG);
1414 	data &= ~ESA_INT_CLK_SELECT;
1415 	if (sc->type == ESS_MAESTRO3) {
1416 		data &= ~ESA_INT_CLK_MULT_ENABLE;
1417 		data |= ESA_INT_CLK_SRC_NOT_PCI;
1418 	}
1419 	data &= ~(ESA_CLK_MULT_MODE_SELECT | ESA_CLK_MULT_MODE_SELECT_2);
1420 	pci_conf_write(pc, tag, ESA_PCI_ALLEGRO_CONFIG, data);
1421 
1422 	if (sc->type == ESS_ALLEGRO1) {
1423 		data = pci_conf_read(pc, tag, ESA_PCI_USER_CONFIG);
1424 		data |= ESA_IN_CLK_12MHZ_SELECT;
1425 		pci_conf_write(pc, tag, ESA_PCI_USER_CONFIG, data);
1426 	}
1427 
1428 	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_A);
1429 	data &= ~(ESA_DSP_CLK_36MHZ_SELECT | ESA_ASSP_CLK_49MHZ_SELECT);
1430 	data |= ESA_ASSP_CLK_49MHZ_SELECT;	/* XXX: Assumes 49MHz DSP */
1431 	data |= ESA_ASSP_0_WS_ENABLE;
1432 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_A, data);
1433 
1434 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_B, ESA_RUN_ASSP);
1435 
1436 	return;
1437 }
1438 
1439 static uint8_t
1440 esa_assp_halt(struct esa_softc *sc)
1441 {
1442 	bus_space_tag_t iot;
1443 	bus_space_handle_t ioh;
1444 	uint8_t data, reset_state;
1445 
1446 	iot = sc->sc_iot;
1447 	ioh = sc->sc_ioh;
1448 	data = bus_space_read_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B);
1449 	reset_state = data & ~ESA_REGB_STOP_CLOCK;
1450 	delay(10000);		/* XXX use tsleep */
1451 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
1452 			reset_state & ~ESA_REGB_ENABLE_RESET);
1453 	delay(10000);		/* XXX use tsleep */
1454 
1455 	return reset_state;
1456 }
1457 
1458 static void
1459 esa_codec_reset(struct esa_softc *sc)
1460 {
1461 	bus_space_tag_t iot;
1462 	bus_space_handle_t ioh;
1463 	uint16_t data, dir;
1464 	int retry;
1465 
1466 	iot = sc->sc_iot;
1467 	ioh = sc->sc_ioh;
1468 	retry = 0;
1469 	do {
1470 		data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
1471 		dir = data | 0x10; /* assuming pci bus master? */
1472 
1473 		/* remote codec config */
1474 		data = bus_space_read_2(iot, ioh, ESA_RING_BUS_CTRL_B);
1475 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_B,
1476 		    data & ~ESA_SECOND_CODEC_ID_MASK);
1477 		data = bus_space_read_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL);
1478 		bus_space_write_2(iot, ioh, ESA_SDO_OUT_DEST_CTRL,
1479 		    data & ~ESA_COMMAND_ADDR_OUT);
1480 		data = bus_space_read_2(iot, ioh, ESA_SDO_IN_DEST_CTRL);
1481 		bus_space_write_2(iot, ioh, ESA_SDO_IN_DEST_CTRL,
1482 		    data & ~ESA_STATUS_ADDR_IN);
1483 
1484 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
1485 				  ESA_IO_SRAM_ENABLE);
1486 		delay(20);
1487 
1488 		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
1489 		    dir & ~ESA_GPO_PRIMARY_AC97);
1490 		bus_space_write_2(iot, ioh, ESA_GPIO_MASK,
1491 				  ~ESA_GPO_PRIMARY_AC97);
1492 		bus_space_write_2(iot, ioh, ESA_GPIO_DATA, 0);
1493 		bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION,
1494 		    dir | ESA_GPO_PRIMARY_AC97);
1495 		delay(sc->delay1 * 1000);
1496 		bus_space_write_2(iot, ioh, ESA_GPIO_DATA,
1497 				  ESA_GPO_PRIMARY_AC97);
1498 		delay(5);
1499 		bus_space_write_2(iot, ioh, ESA_RING_BUS_CTRL_A,
1500 		    ESA_IO_SRAM_ENABLE | ESA_SERIAL_AC_LINK_ENABLE);
1501 		bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
1502 		delay(sc->delay2 * 1000);
1503 
1504 		esa_read_codec(sc, 0x7c, &data);
1505 		if ((data == 0) || (data == 0xffff)) {
1506 			retry++;
1507 			if (retry > 3) {
1508 				printf("%s: esa_codec_reset: failed\n",
1509 				    sc->sc_dev.dv_xname);
1510 				break;
1511 			}
1512 			printf("%s: esa_codec_reset: retrying\n",
1513 			    sc->sc_dev.dv_xname);
1514 		} else
1515 			retry = 0;
1516 	} while (retry);
1517 
1518 	return;
1519 }
1520 
1521 static int
1522 esa_amp_enable(struct esa_softc *sc)
1523 {
1524 	bus_space_tag_t iot;
1525 	bus_space_handle_t ioh;
1526 	uint32_t gpo, polarity_port, polarity;
1527 	uint16_t data;
1528 
1529 	iot = sc->sc_iot;
1530 	ioh = sc->sc_ioh;
1531 	switch (sc->type) {
1532 	case ESS_ALLEGRO1:
1533 		polarity_port = 0x1800;
1534 		break;
1535 	case ESS_MAESTRO3:
1536 		polarity_port = 0x1100;
1537 		break;
1538 	default:
1539 		printf("%s: esa_amp_enable: Unknown chip type!!!\n",
1540 		    sc->sc_dev.dv_xname);
1541 		return 1;
1542 	}
1543 
1544 	gpo = (polarity_port >> 8) & 0x0f;
1545 	polarity = polarity_port >> 12;
1546 	polarity = !polarity;	/* Enable */
1547 	polarity = polarity << gpo;
1548 	gpo = 1 << gpo;
1549 	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~gpo);
1550 	data = bus_space_read_2(iot, ioh, ESA_GPIO_DIRECTION);
1551 	bus_space_write_2(iot, ioh, ESA_GPIO_DIRECTION, data | gpo);
1552 	data = ESA_GPO_SECONDARY_AC97 | ESA_GPO_PRIMARY_AC97 | polarity;
1553 	bus_space_write_2(iot, ioh, ESA_GPIO_DATA, data);
1554 	bus_space_write_2(iot, ioh, ESA_GPIO_MASK, ~0);
1555 
1556 	return 0;
1557 }
1558 
1559 static void
1560 esa_enable_interrupts(struct esa_softc *sc)
1561 {
1562 	bus_space_tag_t iot;
1563 	bus_space_handle_t ioh;
1564 	uint8_t data;
1565 
1566 	iot = sc->sc_iot;
1567 	ioh = sc->sc_ioh;
1568 	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL,
1569 	    ESA_ASSP_INT_ENABLE | ESA_HV_INT_ENABLE);
1570 	data = bus_space_read_1(iot, ioh, ESA_ASSP_CONTROL_C);
1571 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C,
1572 	    data | ESA_ASSP_HOST_INT_ENABLE);
1573 }
1574 
1575 /*
1576  * List management
1577  */
1578 static int
1579 esa_add_list(struct esa_voice *vc, struct esa_list *el,
1580 	     uint16_t val, int index)
1581 {
1582 	struct esa_softc *sc;
1583 
1584 	sc = (struct esa_softc *)vc->parent;
1585 	el->indexmap[index] = el->currlen;
1586 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1587 		       el->mem_addr + el->currlen,
1588 		       val);
1589 
1590 	return el->currlen++;
1591 }
1592 
1593 static void
1594 esa_remove_list(struct esa_voice *vc, struct esa_list *el, int index)
1595 {
1596 	struct esa_softc *sc;
1597 	uint16_t val;
1598 	int lastindex;
1599 	int vindex;
1600 	int i;
1601 
1602 	sc = (struct esa_softc *)vc->parent;
1603 	lastindex = el->currlen - 1;
1604 	vindex = el->indexmap[index];
1605 
1606 	/* reset our virtual index */
1607 	el->indexmap[index] = -1;
1608 
1609 	if (vindex != lastindex) {
1610 		val = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1611 				    el->mem_addr + lastindex);
1612 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1613 			       el->mem_addr + vindex,
1614 			       val);
1615 		for (i = 0; i < ESA_NUM_VOICES * 2; i++)
1616 			if (el->indexmap[i] == lastindex)
1617 				break;
1618 		if (i >= ESA_NUM_VOICES * 2)
1619 			printf("%s: esa_remove_list: invalid task index\n",
1620 			       sc->sc_dev.dv_xname);
1621 		else
1622 			el->indexmap[i] = vindex;
1623 	}
1624 
1625 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA,
1626 		       el->mem_addr + lastindex, 0);
1627 	el->currlen--;
1628 
1629 	return;
1630 }
1631 
1632 static int
1633 esa_power(struct esa_softc *sc, int state)
1634 {
1635 	pcitag_t tag;
1636 	pci_chipset_tag_t pc;
1637 	pcireg_t data;
1638 	int pmcapreg;
1639 
1640 	tag = sc->sc_tag;
1641 	 pc = sc->sc_pct;
1642 	if (pci_get_capability(pc, tag, PCI_CAP_PWRMGMT, &pmcapreg, 0)) {
1643 		data = pci_conf_read(pc, tag, pmcapreg + PCI_PMCSR);
1644 		if ((data & PCI_PMCSR_STATE_MASK) != state)
1645 			pci_conf_write(pc, tag, pmcapreg + PCI_PMCSR, state);
1646 	}
1647 
1648 	return 0;
1649 }
1650 
1651 static void
1652 esa_powerhook(int why, void *hdl)
1653 {
1654 	struct esa_softc *sc;
1655 
1656 	sc = (struct esa_softc *)hdl;
1657 	switch (why) {
1658 	case PWR_SUSPEND:
1659 	case PWR_STANDBY:
1660 		esa_suspend(sc);
1661 		break;
1662 	case PWR_RESUME:
1663 		esa_resume(sc);
1664 		sc->codec_if->vtbl->restore_ports(sc->codec_if);
1665 		break;
1666 	}
1667 }
1668 
1669 static int
1670 esa_suspend(struct esa_softc *sc)
1671 {
1672 	bus_space_tag_t iot;
1673 	bus_space_handle_t ioh;
1674 	int i, index;
1675 
1676 	iot = sc->sc_iot;
1677 	ioh = sc->sc_ioh;
1678 	index = 0;
1679 
1680 	bus_space_write_2(iot, ioh, ESA_HOST_INT_CTRL, 0);
1681 	bus_space_write_1(iot, ioh, ESA_ASSP_CONTROL_C, 0);
1682 
1683 	esa_assp_halt(sc);
1684 
1685 	/* Save ASSP state */
1686 	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
1687 	    i++)
1688 		sc->savemem[index++] = esa_read_assp(sc,
1689 		    ESA_MEMTYPE_INTERNAL_CODE, i);
1690 	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
1691 	    i++)
1692 		sc->savemem[index++] = esa_read_assp(sc,
1693 		    ESA_MEMTYPE_INTERNAL_DATA, i);
1694 
1695 	esa_power(sc, PCI_PMCSR_STATE_D3);
1696 
1697 	return 0;
1698 }
1699 
1700 static int
1701 esa_resume(struct esa_softc *sc)
1702 {
1703 	bus_space_tag_t iot;
1704 	bus_space_handle_t ioh;
1705 	int i, index;
1706 	uint8_t reset_state;
1707 
1708 	iot = sc->sc_iot;
1709 	ioh = sc->sc_ioh;
1710 	index = 0;
1711 
1712 	esa_power(sc, PCI_PMCSR_STATE_D0);
1713 	delay(10000);
1714 
1715 	esa_config(sc);
1716 
1717 	reset_state = esa_assp_halt(sc);
1718 
1719 	esa_codec_reset(sc);
1720 
1721 	/* restore ASSP */
1722 	for (i = ESA_REV_B_CODE_MEMORY_BEGIN; i <= ESA_REV_B_CODE_MEMORY_END;
1723 	    i++)
1724 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_CODE, i,
1725 		    sc->savemem[index++]);
1726 	for (i = ESA_REV_B_DATA_MEMORY_BEGIN; i <= ESA_REV_B_DATA_MEMORY_END;
1727 	    i++)
1728 		esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, i,
1729 		    sc->savemem[index++]);
1730 
1731 	esa_write_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, ESA_KDATA_DMA_ACTIVE, 0);
1732 	bus_space_write_1(iot, ioh, ESA_DSP_PORT_CONTROL_REG_B,
1733 	    reset_state | ESA_REGB_ENABLE_RESET);
1734 
1735 	esa_enable_interrupts(sc);
1736 	esa_amp_enable(sc);
1737 
1738 	return 0;
1739 }
1740 
1741 static uint32_t
1742 esa_get_pointer(struct esa_softc *sc, struct esa_channel *ch)
1743 {
1744 	uint16_t hi, lo;
1745 	uint32_t addr;
1746 	int data_offset;
1747 
1748 	data_offset = ch->data_offset;
1749 	hi = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
1750 	    ESA_CDATA_HOST_SRC_CURRENTH);
1751 	lo = esa_read_assp(sc, ESA_MEMTYPE_INTERNAL_DATA, data_offset +
1752 	    ESA_CDATA_HOST_SRC_CURRENTL);
1753 
1754 	addr = lo | ((uint32_t)hi << 16);
1755 	return (addr - ch->start);
1756 }
1757 
1758 static paddr_t
1759 esa_mappage(void *addr, void *mem, off_t off, int prot)
1760 {
1761 	struct esa_voice *vc;
1762 	struct esa_softc *sc;
1763 	struct esa_dma *p;
1764 
1765 	vc = addr;
1766 	sc = (struct esa_softc *)vc->parent;
1767 	if (off < 0)
1768 		return -1;
1769 	for (p = vc->dma; p && KERNADDR(p) != mem; p = p->next)
1770 		continue;
1771 	if (p == NULL)
1772 		return -1;
1773 	return bus_dmamem_mmap(sc->sc_dmat, p->segs, p->nsegs,
1774 			       off, prot, BUS_DMA_WAITOK);
1775 }
1776