xref: /openbsd-src/sys/dev/pci/eso.c (revision db3296cf5c1dd9058ceecc3a29fe4aaa0bd26000)
1 /*	$OpenBSD: eso.c,v 1.20 2003/05/01 22:44:21 jason Exp $	*/
2 /*	$NetBSD: eso.c,v 1.3 1999/08/02 17:37:43 augustss Exp $	*/
3 
4 /*
5  * Copyright (c) 1999 Klaus J. Klein
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. The name of the author may not be used to endorse or promote products
17  *    derived from this software without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
27  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 /*
33  * ESS Technology Inc. Solo-1 PCI AudioDrive (ES1938/1946) device driver.
34  */
35 
36 #ifdef __OpenBSD__
37 #define HIDE
38 #define MATCH_ARG_2_T void *
39 #else
40 #define HIDE static
41 #define MATCH_ARG_2_T struct cfdata *
42 #endif
43 
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/kernel.h>
47 #include <sys/malloc.h>
48 #include <sys/device.h>
49 #include <sys/proc.h>
50 
51 #include <dev/pci/pcidevs.h>
52 #include <dev/pci/pcivar.h>
53 
54 #include <sys/audioio.h>
55 #include <dev/audio_if.h>
56 #include <dev/midi_if.h>
57 
58 #include <dev/mulaw.h>
59 #include <dev/auconv.h>
60 
61 #include <dev/ic/mpuvar.h>
62 #include <dev/ic/i8237reg.h>
63 #include <dev/pci/esoreg.h>
64 #include <dev/pci/esovar.h>
65 #include <dev/audiovar.h>
66 
67 #include <machine/bus.h>
68 #include <machine/intr.h>
69 
70 #if defined(AUDIO_DEBUG) || defined(DEBUG)
71 #define DPRINTF(x) printf x
72 #else
73 #define DPRINTF(x)
74 #endif
75 
76 struct eso_dma {
77 	bus_dmamap_t		ed_map;
78 	caddr_t			ed_addr;
79 	bus_dma_segment_t	ed_segs[1];
80 	int			ed_nsegs;
81 	size_t			ed_size;
82 	struct eso_dma *	ed_next;
83 };
84 
85 #define KVADDR(dma)	((void *)(dma)->ed_addr)
86 #define DMAADDR(dma)	((dma)->ed_map->dm_segs[0].ds_addr)
87 
88 /* Autoconfiguration interface */
89 HIDE int eso_match(struct device *, MATCH_ARG_2_T, void *);
90 HIDE void eso_attach(struct device *, struct device *, void *);
91 HIDE void eso_defer(struct device *);
92 
93 struct cfattach eso_ca = {
94 	sizeof (struct eso_softc), eso_match, eso_attach
95 };
96 
97 #ifdef __OpenBSD__
98 struct cfdriver eso_cd = {
99 	NULL, "eso", DV_DULL
100 };
101 #endif
102 
103 /* PCI interface */
104 HIDE int eso_intr(void *);
105 
106 /* MI audio layer interface */
107 HIDE int	eso_open(void *, int);
108 HIDE void	eso_close(void *);
109 HIDE int	eso_query_encoding(void *, struct audio_encoding *);
110 HIDE int	eso_set_params(void *, int, int, struct audio_params *,
111 		    struct audio_params *);
112 HIDE int	eso_round_blocksize(void *, int);
113 HIDE int	eso_halt_output(void *);
114 HIDE int	eso_halt_input(void *);
115 HIDE int	eso_getdev(void *, struct audio_device *);
116 HIDE int	eso_set_port(void *, mixer_ctrl_t *);
117 HIDE int	eso_get_port(void *, mixer_ctrl_t *);
118 HIDE int	eso_query_devinfo(void *, mixer_devinfo_t *);
119 HIDE void *	eso_allocm(void *, int, size_t, int, int);
120 HIDE void	eso_freem(void *, void *, int);
121 HIDE size_t	eso_round_buffersize(void *, int, size_t);
122 HIDE paddr_t	eso_mappage(void *, void *, off_t, int);
123 HIDE int	eso_get_props(void *);
124 HIDE int	eso_trigger_output(void *, void *, void *, int,
125 		    void (*)(void *), void *, struct audio_params *);
126 HIDE int	eso_trigger_input(void *, void *, void *, int,
127 		    void (*)(void *), void *, struct audio_params *);
128 HIDE void       eso_setup(struct eso_softc *, int);
129 
130 HIDE void       eso_powerhook(int, void *);
131 
132 
133 HIDE struct audio_hw_if eso_hw_if = {
134 	eso_open,
135 	eso_close,
136 	NULL,			/* drain */
137 	eso_query_encoding,
138 	eso_set_params,
139 	eso_round_blocksize,
140 	NULL,			/* commit_settings */
141 	NULL,			/* init_output */
142 	NULL,			/* init_input */
143 	NULL,			/* start_output */
144 	NULL,			/* start_input */
145 	eso_halt_output,
146 	eso_halt_input,
147 	NULL,			/* speaker_ctl */
148 	eso_getdev,
149 	NULL,			/* setfd */
150 	eso_set_port,
151 	eso_get_port,
152 	eso_query_devinfo,
153 	eso_allocm,
154 	eso_freem,
155 	eso_round_buffersize,
156 	eso_mappage,
157 	eso_get_props,
158 	eso_trigger_output,
159 	eso_trigger_input,
160 };
161 
162 HIDE const char * const eso_rev2model[] = {
163 	"ES1938",
164 	"ES1946",
165 	"ES1946 rev E"
166 };
167 
168 
169 /*
170  * Utility routines
171  */
172 /* Register access etc. */
173 HIDE uint8_t	eso_read_ctlreg(struct eso_softc *, uint8_t);
174 HIDE uint8_t	eso_read_mixreg(struct eso_softc *, uint8_t);
175 HIDE uint8_t	eso_read_rdr(struct eso_softc *);
176 HIDE int	eso_reset(struct eso_softc *);
177 HIDE void	eso_set_gain(struct eso_softc *, unsigned int);
178 HIDE int	eso_set_recsrc(struct eso_softc *, unsigned int);
179 HIDE void	eso_write_cmd(struct eso_softc *, uint8_t);
180 HIDE void	eso_write_ctlreg(struct eso_softc *, uint8_t, uint8_t);
181 HIDE void	eso_write_mixreg(struct eso_softc *, uint8_t, uint8_t);
182 /* DMA memory allocation */
183 HIDE int	eso_allocmem(struct eso_softc *, size_t, size_t, size_t,
184 		    int, struct eso_dma *);
185 HIDE void	eso_freemem(struct eso_softc *, struct eso_dma *);
186 
187 
188 HIDE int
189 eso_match(parent, match, aux)
190 	struct device *parent;
191 	MATCH_ARG_2_T match;
192 	void *aux;
193 {
194 	struct pci_attach_args *pa = aux;
195 
196 	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ESSTECH &&
197 	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ESSTECH_SOLO1)
198 		return (1);
199 
200 	return (0);
201 }
202 
203 HIDE void
204 eso_attach(parent, self, aux)
205 	struct device *parent, *self;
206 	void *aux;
207 {
208 	struct eso_softc *sc = (struct eso_softc *)self;
209 	struct pci_attach_args *pa = aux;
210 	struct audio_attach_args aa;
211 	pci_intr_handle_t ih;
212 	bus_addr_t vcbase;
213 	const char *intrstring;
214 
215 	sc->sc_revision = PCI_REVISION(pa->pa_class);
216 
217 	if (sc->sc_revision <
218 	    sizeof (eso_rev2model) / sizeof (eso_rev2model[0]))
219 		printf(": %s", eso_rev2model[sc->sc_revision]);
220 	else
221 		printf(": (unknown rev. 0x%02x)", sc->sc_revision);
222 
223 	/* Map I/O registers. */
224 	if (pci_mapreg_map(pa, ESO_PCI_BAR_IO, PCI_MAPREG_TYPE_IO, 0,
225 	    &sc->sc_iot, &sc->sc_ioh, NULL, NULL, 0)) {
226 		printf(", can't map I/O space\n");
227 		return;
228 	}
229 	if (pci_mapreg_map(pa, ESO_PCI_BAR_SB, PCI_MAPREG_TYPE_IO, 0,
230 	    &sc->sc_sb_iot, &sc->sc_sb_ioh, NULL, NULL, 0)) {
231 		printf(", can't map SB I/O space\n");
232 		return;
233 	}
234 	if (pci_mapreg_map(pa, ESO_PCI_BAR_VC, PCI_MAPREG_TYPE_IO, 0,
235 	    &sc->sc_dmac_iot, &sc->sc_dmac_ioh, &vcbase, &sc->sc_vcsize, 0)) {
236 		vcbase = 0;
237 		sc->sc_vcsize = 0x10; /* From the data sheet. */
238 	}
239 
240 	if (pci_mapreg_map(pa, ESO_PCI_BAR_MPU, PCI_MAPREG_TYPE_IO, 0,
241 	    &sc->sc_mpu_iot, &sc->sc_mpu_ioh, NULL, NULL, 0)) {
242 		printf(", can't map MPU I/O space\n");
243 		return;
244 	}
245 	if (pci_mapreg_map(pa, ESO_PCI_BAR_GAME, PCI_MAPREG_TYPE_IO, 0,
246 	    &sc->sc_game_iot, &sc->sc_game_ioh, NULL, NULL, 0)) {
247 		printf(", can't map Game I/O space\n");
248 		return;
249 	}
250 
251 	sc->sc_dmat = pa->pa_dmat;
252 	sc->sc_dmas = NULL;
253 	sc->sc_dmac_configured = 0;
254 
255 	sc->sc_pa = *pa;
256 
257 	/* Enable bus mastering. */
258 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
259 		       pci_conf_read(pa->pa_pc, pa->pa_tag,
260 				     PCI_COMMAND_STATUS_REG) |
261 		       PCI_COMMAND_MASTER_ENABLE);
262 
263 	eso_setup(sc, 1);
264 
265 	/* map and establish the interrupt. */
266 	if (pci_intr_map(pa, &ih)) {
267 		printf(", couldn't map interrupt\n");
268 		return;
269 	}
270 	intrstring = pci_intr_string(pa->pa_pc, ih);
271 #ifdef __OpenBSD__
272 	sc->sc_ih  = pci_intr_establish(pa->pa_pc, ih, IPL_AUDIO, eso_intr, sc,
273 					sc->sc_dev.dv_xname);
274 #else
275 	sc->sc_ih  = pci_intr_establish(pa->pa_pc, ih, IPL_AUDIO, eso_intr, sc);
276 #endif
277 	if (sc->sc_ih == NULL) {
278 		printf(", couldn't establish interrupt");
279 		if (intrstring != NULL)
280 			printf(" at %s", intrstring);
281 		printf("\n");
282 		return;
283 	}
284 	printf(", %s\n", intrstring);
285 
286 	/*
287 	 * Set up the DDMA Control register; a suitable I/O region has been
288 	 * supposedly mapped in the VC base address register.
289 	 *
290 	 * The Solo-1 has an ... interesting silicon bug that causes it to
291 	 * not respond to I/O space accesses to the Audio 1 DMA controller
292 	 * if the latter's mapping base address is aligned on a 1K boundary.
293 	 * As a consequence, it is quite possible for the mapping provided
294 	 * in the VC BAR to be useless.  To work around this, we defer this
295 	 * part until all autoconfiguration on our parent bus is completed
296 	 * and then try to map it ourselves in fulfillment of the constraint.
297 	 *
298 	 * According to the register map we may write to the low 16 bits
299 	 * only, but experimenting has shown we're safe.
300 	 * -kjk
301 	 */
302 
303 	if (ESO_VALID_DDMAC_BASE(vcbase)) {
304 		pci_conf_write(pa->pa_pc, pa->pa_tag, ESO_PCI_DDMAC,
305 			       vcbase | ESO_PCI_DDMAC_DE);
306 		sc->sc_dmac_configured = 1;
307 
308 		printf("%s: mapping Audio 1 DMA using VC I/O space at 0x%lx\n",
309 		       sc->sc_dev.dv_xname, (unsigned long)vcbase);
310 	} else {
311 		DPRINTF(("%s: VC I/O space at 0x%lx not suitable, deferring\n",
312 			 sc->sc_dev.dv_xname, (unsigned long)vcbase));
313 		config_defer((struct device *)sc, eso_defer);
314 	}
315 
316 	audio_attach_mi(&eso_hw_if, sc, &sc->sc_dev);
317 
318 	aa.type = AUDIODEV_TYPE_OPL;
319 	aa.hwif = NULL;
320 	aa.hdl = NULL;
321 	(void)config_found(&sc->sc_dev, &aa, audioprint);
322 
323 	sc->sc_powerhook = powerhook_establish(&eso_powerhook, sc);
324 
325 #if 0
326 	aa.type = AUDIODEV_TYPE_MPU;
327 	aa.hwif = NULL;
328 	aa.hdl = NULL;
329 	sc->sc_mpudev = config_found(&sc->sc_dev, &aa, audioprint);
330 #endif
331 }
332 
333 HIDE void
334 eso_setup(sc, verbose)
335 	struct eso_softc *sc;
336 	int verbose;
337 {
338 	struct pci_attach_args *pa = &sc->sc_pa;
339 	uint8_t a2mode;
340 	int idx;
341 
342 	/* Reset the device; bail out upon failure. */
343 	if (eso_reset(sc) != 0) {
344 		if (verbose) printf(", can't reset\n");
345 		return;
346 	}
347 
348 	/* Select the DMA/IRQ policy: DDMA, ISA IRQ emulation disabled. */
349 	pci_conf_write(pa->pa_pc, pa->pa_tag, ESO_PCI_S1C,
350 		       pci_conf_read(pa->pa_pc, pa->pa_tag, ESO_PCI_S1C) &
351 		       ~(ESO_PCI_S1C_IRQP_MASK | ESO_PCI_S1C_DMAP_MASK));
352 
353 	/* Enable the relevant DMA interrupts. */
354 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_IRQCTL,
355 			  ESO_IO_IRQCTL_A1IRQ | ESO_IO_IRQCTL_A2IRQ);
356 
357 	/* Set up A1's sample rate generator for new-style parameters. */
358 	a2mode = eso_read_mixreg(sc, ESO_MIXREG_A2MODE);
359 	a2mode |= ESO_MIXREG_A2MODE_NEWA1 | ESO_MIXREG_A2MODE_ASYNC;
360 	eso_write_mixreg(sc, ESO_MIXREG_A2MODE, a2mode);
361 
362 	/* Set mixer regs to something reasonable, needs work. */
363 	for (idx = 0; idx < ESO_NGAINDEVS; idx++) {
364 		int v;
365 
366 		switch (idx) {
367  		case ESO_MIC_PLAY_VOL:
368 		case ESO_LINE_PLAY_VOL:
369 		case ESO_CD_PLAY_VOL:
370 		case ESO_MONO_PLAY_VOL:
371 		case ESO_AUXB_PLAY_VOL:
372 		case ESO_DAC_REC_VOL:
373 		case ESO_LINE_REC_VOL:
374 		case ESO_SYNTH_REC_VOL:
375 		case ESO_CD_REC_VOL:
376 		case ESO_MONO_REC_VOL:
377 		case ESO_AUXB_REC_VOL:
378 		case ESO_SPATIALIZER:
379 			v = 0;
380 			break;
381 		case ESO_MASTER_VOL:
382 			v = ESO_GAIN_TO_6BIT(AUDIO_MAX_GAIN / 2);
383 			break;
384 		default:
385 			v = ESO_GAIN_TO_4BIT(AUDIO_MAX_GAIN / 2);
386 			break;
387 		}
388 		sc->sc_gain[idx][ESO_LEFT] = sc->sc_gain[idx][ESO_RIGHT] = v;
389 		eso_set_gain(sc, idx);
390 	}
391 	eso_set_recsrc(sc, ESO_MIXREG_ERS_MIC);
392 }
393 
394 HIDE void
395 eso_defer(self)
396 	struct device *self;
397 {
398 	struct eso_softc *sc = (struct eso_softc *)self;
399 	struct pci_attach_args *pa = &sc->sc_pa;
400 	bus_addr_t addr, start;
401 
402 	printf("%s: ", sc->sc_dev.dv_xname);
403 
404 	/*
405 	 * This is outright ugly, but since we must not make assumptions
406 	 * on the underlying allocator's behaviour it's the most straight-
407 	 * forward way to implement it.  Note that we skip over the first
408 	 * 1K region, which is typically occupied by an attached ISA bus.
409 	 */
410 	for (start = 0x0400; start < 0xffff; start += 0x0400) {
411 		if (bus_space_alloc(sc->sc_iot,
412 		    start + sc->sc_vcsize, start + 0x0400 - 1,
413 		    sc->sc_vcsize, sc->sc_vcsize, 0, 0, &addr,
414 		    &sc->sc_dmac_ioh) != 0)
415 			continue;
416 
417 		pci_conf_write(pa->pa_pc, pa->pa_tag, ESO_PCI_DDMAC,
418 		    addr | ESO_PCI_DDMAC_DE);
419 		sc->sc_dmac_iot = sc->sc_iot;
420 		sc->sc_dmac_configured = 1;
421 		printf("mapping Audio 1 DMA using I/O space at 0x%lx\n",
422 		    (unsigned long)addr);
423 
424 		return;
425 	}
426 
427 	printf("can't map Audio 1 DMA into I/O space\n");
428 }
429 
430 HIDE void
431 eso_write_cmd(sc, cmd)
432 	struct eso_softc *sc;
433 	uint8_t cmd;
434 {
435 	int i;
436 
437 	/* Poll for busy indicator to become clear. */
438 	for (i = 0; i < ESO_WDR_TIMEOUT; i++) {
439 		if ((bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_RSR)
440 		    & ESO_SB_RSR_BUSY) == 0) {
441 			bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh,
442 			    ESO_SB_WDR, cmd);
443 			return;
444 		} else {
445 			delay(10);
446 		}
447 	}
448 
449 	printf("%s: WDR timeout\n", sc->sc_dev.dv_xname);
450 	return;
451 }
452 
453 /* Write to a controller register */
454 HIDE void
455 eso_write_ctlreg(sc, reg, val)
456 	struct eso_softc *sc;
457 	uint8_t reg, val;
458 {
459 
460 	/* DPRINTF(("ctlreg 0x%02x = 0x%02x\n", reg, val)); */
461 
462 	eso_write_cmd(sc, reg);
463 	eso_write_cmd(sc, val);
464 }
465 
466 /* Read out the Read Data Register */
467 HIDE uint8_t
468 eso_read_rdr(sc)
469 	struct eso_softc *sc;
470 {
471 	int i;
472 
473 	for (i = 0; i < ESO_RDR_TIMEOUT; i++) {
474 		if (bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh,
475 		    ESO_SB_RBSR) & ESO_SB_RBSR_RDAV) {
476 			return (bus_space_read_1(sc->sc_sb_iot,
477 			    sc->sc_sb_ioh, ESO_SB_RDR));
478 		} else {
479 			delay(10);
480 		}
481 	}
482 
483 	printf("%s: RDR timeout\n", sc->sc_dev.dv_xname);
484 	return (-1);
485 }
486 
487 
488 HIDE uint8_t
489 eso_read_ctlreg(sc, reg)
490 	struct eso_softc *sc;
491 	uint8_t reg;
492 {
493 
494 	eso_write_cmd(sc, ESO_CMD_RCR);
495 	eso_write_cmd(sc, reg);
496 	return (eso_read_rdr(sc));
497 }
498 
499 HIDE void
500 eso_write_mixreg(sc, reg, val)
501 	struct eso_softc *sc;
502 	uint8_t reg, val;
503 {
504 	int s;
505 
506 	/* DPRINTF(("mixreg 0x%02x = 0x%02x\n", reg, val)); */
507 
508 	s = splaudio();
509 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_MIXERADDR, reg);
510 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_MIXERDATA, val);
511 	splx(s);
512 }
513 
514 HIDE uint8_t
515 eso_read_mixreg(sc, reg)
516 	struct eso_softc *sc;
517 	uint8_t reg;
518 {
519 	int s;
520 	uint8_t val;
521 
522 	s = splaudio();
523 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_MIXERADDR, reg);
524 	val = bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_MIXERDATA);
525 	splx(s);
526 
527 	return (val);
528 }
529 
530 HIDE int
531 eso_intr(hdl)
532 	void *hdl;
533 {
534 	struct eso_softc *sc = hdl;
535 	uint8_t irqctl;
536 
537 	irqctl = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ESO_IO_IRQCTL);
538 
539 	/* If it wasn't ours, that's all she wrote. */
540 	if ((irqctl & (ESO_IO_IRQCTL_A1IRQ | ESO_IO_IRQCTL_A2IRQ)) == 0)
541 		return (0);
542 
543 	if (irqctl & ESO_IO_IRQCTL_A1IRQ) {
544 		/* Clear interrupt. */
545 		(void)bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh,
546 		    ESO_SB_RBSR);
547 
548 		if (sc->sc_rintr)
549 			sc->sc_rintr(sc->sc_rarg);
550 		else
551 			wakeup(&sc->sc_rintr);
552 	}
553 
554 	if (irqctl & ESO_IO_IRQCTL_A2IRQ) {
555 		/*
556 		 * Clear the A2 IRQ latch: the cached value reflects the
557 		 * current DAC settings with the IRQ latch bit not set.
558 		 */
559 		eso_write_mixreg(sc, ESO_MIXREG_A2C2, sc->sc_a2c2);
560 
561 		if (sc->sc_pintr)
562 			sc->sc_pintr(sc->sc_parg);
563 		else
564 			wakeup(&sc->sc_pintr);
565 	}
566 
567 #if 0
568 	if ((irqctl & ESO_IO_IRQCTL_MPUIRQ) && sc->sc_mpudev != 0)
569 		mpu_intr(sc->sc_mpudev);
570 #endif
571 
572 	return (1);
573 }
574 
575 /* Perform a software reset, including DMA FIFOs. */
576 HIDE int
577 eso_reset(sc)
578 	struct eso_softc *sc;
579 {
580 	int i;
581 
582 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_RESET,
583 	    ESO_SB_RESET_SW | ESO_SB_RESET_FIFO);
584 	/* `Delay' suggested in the data sheet. */
585 	(void)bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_STATUS);
586 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_RESET, 0);
587 
588 	/* Wait for reset to take effect. */
589 	for (i = 0; i < ESO_RESET_TIMEOUT; i++) {
590 		/* Poll for data to become available. */
591 		if ((bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh,
592 		    ESO_SB_RBSR) & ESO_SB_RBSR_RDAV) != 0 &&
593 		    bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh,
594 			ESO_SB_RDR) == ESO_SB_RDR_RESETMAGIC) {
595 
596 			/* Activate Solo-1 extension commands. */
597 			eso_write_cmd(sc, ESO_CMD_EXTENB);
598 			/* Reset mixer registers. */
599 			eso_write_mixreg(sc, ESO_MIXREG_RESET,
600 			    ESO_MIXREG_RESET_RESET);
601 
602 			return (0);
603 		} else {
604 			delay(1000);
605 		}
606 	}
607 
608 	printf("%s: reset timeout\n", sc->sc_dev.dv_xname);
609 	return (-1);
610 }
611 
612 
613 /* ARGSUSED */
614 HIDE int
615 eso_open(hdl, flags)
616 	void *hdl;
617 	int flags;
618 {
619 	struct eso_softc *sc = hdl;
620 
621 	DPRINTF(("%s: open\n", sc->sc_dev.dv_xname));
622 
623 	sc->sc_pintr = NULL;
624 	sc->sc_rintr = NULL;
625 
626 	return (0);
627 }
628 
629 HIDE void
630 eso_close(hdl)
631 	void *hdl;
632 {
633 
634 	DPRINTF(("%s: close\n", ((struct eso_softc *)hdl)->sc_dev.dv_xname));
635 }
636 
637 HIDE int
638 eso_query_encoding(hdl, fp)
639 	void *hdl;
640 	struct audio_encoding *fp;
641 {
642 
643 	switch (fp->index) {
644 	case 0:
645 		strlcpy(fp->name, AudioEulinear, sizeof fp->name);
646 		fp->encoding = AUDIO_ENCODING_ULINEAR;
647 		fp->precision = 8;
648 		fp->flags = 0;
649 		break;
650 	case 1:
651 		strlcpy(fp->name, AudioEslinear, sizeof fp->name);
652 		fp->encoding = AUDIO_ENCODING_SLINEAR;
653 		fp->precision = 8;
654 		fp->flags = 0;
655 		break;
656 	case 2:
657 		fp->precision = 16;
658 		if (fp->flags & AUOPEN_READ) {
659 			strlcpy(fp->name, AudioEslinear_be, sizeof fp->name);
660 			fp->encoding = AUDIO_ENCODING_SLINEAR_BE;
661 			if (fp->flags & AUOPEN_WRITE)
662 				fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
663 			else
664 				fp->flags = 0;
665 		} else {
666 			strlcpy(fp->name, AudioEslinear_le, sizeof fp->name);
667 			fp->encoding = AUDIO_ENCODING_SLINEAR_LE;
668 			fp->flags = 0;
669 		}
670 		break;
671 	case 3:
672 		fp->precision = 16;
673 		if (fp->flags & AUOPEN_READ) {
674 			strlcpy(fp->name, AudioEulinear_be, sizeof fp->name);
675 			fp->encoding = AUDIO_ENCODING_ULINEAR_BE;
676 			if (fp->flags & AUOPEN_WRITE)
677 				fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
678 			else
679 				fp->flags = 0;
680 		} else {
681 			strlcpy(fp->name, AudioEulinear_le, sizeof fp->name);
682 			fp->encoding = AUDIO_ENCODING_ULINEAR_LE;
683 			fp->flags = 0;
684 		}
685 		break;
686 	case 4:
687 		fp->precision = 16;
688 		if (fp->flags & AUOPEN_READ) {
689 			strlcpy(fp->name, AudioEslinear_le, sizeof fp->name);
690 			fp->encoding = AUDIO_ENCODING_SLINEAR_LE;
691 		} else {
692 			strlcpy(fp->name, AudioEslinear_be, sizeof fp->name);
693 			fp->encoding = AUDIO_ENCODING_SLINEAR_BE;
694 		}
695 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
696 		break;
697 	case 5:
698 		fp->precision = 16;
699 		if (fp->flags & AUOPEN_READ) {
700 			strlcpy(fp->name, AudioEulinear_le, sizeof fp->name);
701 			fp->encoding = AUDIO_ENCODING_ULINEAR_LE;
702 		} else {
703 			strlcpy(fp->name, AudioEulinear_be, sizeof fp->name);
704 			fp->encoding = AUDIO_ENCODING_ULINEAR_BE;
705 		}
706 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
707 		break;
708 	case 6:
709 		strlcpy(fp->name, AudioEmulaw, sizeof fp->name);
710 		fp->encoding = AUDIO_ENCODING_ULAW;
711 		fp->precision = 8;
712 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
713 		break;
714 	case 7:
715 		strlcpy(fp->name, AudioEalaw, sizeof fp->name);
716 		fp->encoding = AUDIO_ENCODING_ALAW;
717 		fp->precision = 8;
718 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
719 		break;
720 	default:
721 		return (EINVAL);
722 	}
723 
724 	return (0);
725 }
726 
727 HIDE int
728 eso_set_params(hdl, setmode, usemode, play, rec)
729 	void *hdl;
730 	int setmode, usemode;
731 	struct audio_params *play, *rec;
732 {
733 	struct eso_softc *sc = hdl;
734 	struct audio_params *p;
735 	int mode, r[2], rd[2], clk;
736 	unsigned int srg, fltdiv;
737 
738 	for (mode = AUMODE_RECORD; mode != -1;
739 	     mode = mode == AUMODE_RECORD ? AUMODE_PLAY : -1) {
740 		if ((setmode & mode) == 0)
741 			continue;
742 
743 		p = (mode == AUMODE_PLAY) ? play : rec;
744 
745 		if (p->sample_rate < ESO_MINRATE ||
746 		    p->sample_rate > ESO_MAXRATE ||
747 		    (p->precision != 8 && p->precision != 16) ||
748 		    (p->channels != 1 && p->channels != 2))
749 			return (EINVAL);
750 
751 		p->factor = 1;
752 		p->sw_code = NULL;
753 		switch (p->encoding) {
754 		case AUDIO_ENCODING_SLINEAR_BE:
755 		case AUDIO_ENCODING_ULINEAR_BE:
756 			if (mode == AUMODE_PLAY && p->precision == 16)
757 				p->sw_code = swap_bytes;
758 			break;
759 		case AUDIO_ENCODING_SLINEAR_LE:
760 		case AUDIO_ENCODING_ULINEAR_LE:
761 			if (mode == AUMODE_RECORD && p->precision == 16)
762 				p->sw_code = swap_bytes;
763 			break;
764 		case AUDIO_ENCODING_ULAW:
765 			if (mode == AUMODE_PLAY) {
766 				p->factor = 2;
767 				p->sw_code = mulaw_to_ulinear16;
768 			} else {
769 				p->sw_code = ulinear8_to_mulaw;
770 			}
771 			break;
772 		case AUDIO_ENCODING_ALAW:
773 			if (mode == AUMODE_PLAY) {
774 				p->factor = 2;
775 				p->sw_code = alaw_to_ulinear16;
776 			} else {
777 				p->sw_code = ulinear8_to_alaw;
778 			}
779 			break;
780 		default:
781 			return (EINVAL);
782 		}
783 
784 		/*
785 		 * We'll compute both possible sample rate dividers and pick
786 		 * the one with the least error.
787 		 */
788 #define ABS(x) ((x) < 0 ? -(x) : (x))
789 		r[0] = ESO_CLK0 /
790 		    (128 - (rd[0] = 128 - ESO_CLK0 / p->sample_rate));
791 		r[1] = ESO_CLK1 /
792 		    (128 - (rd[1] = 128 - ESO_CLK1 / p->sample_rate));
793 
794 		clk = ABS(p->sample_rate - r[0]) > ABS(p->sample_rate - r[1]);
795 		srg = rd[clk] | (clk == 1 ? ESO_CLK1_SELECT : 0x00);
796 
797 		/* Roll-off frequency of 87%, as in the ES1888 driver. */
798 		fltdiv = 256 - 200279L / p->sample_rate;
799 
800 		/* Update to reflect the possibly inexact rate. */
801 		p->sample_rate = r[clk];
802 
803 		if (mode == AUMODE_RECORD) {
804 			/* Audio 1 */
805 			DPRINTF(("A1 srg 0x%02x fdiv 0x%02x\n", srg, fltdiv));
806 			eso_write_ctlreg(sc, ESO_CTLREG_SRG, srg);
807 			eso_write_ctlreg(sc, ESO_CTLREG_FLTDIV, fltdiv);
808 		} else {
809 			/* Audio 2 */
810 			DPRINTF(("A2 srg 0x%02x fdiv 0x%02x\n", srg, fltdiv));
811 			eso_write_mixreg(sc, ESO_MIXREG_A2SRG, srg);
812 			eso_write_mixreg(sc, ESO_MIXREG_A2FLTDIV, fltdiv);
813 		}
814 #undef ABS
815 
816 	}
817 
818 	return (0);
819 }
820 
821 HIDE int
822 eso_round_blocksize(hdl, blk)
823 	void *hdl;
824 	int blk;
825 {
826 
827 	return (blk & -32);	/* keep good alignment; at least 16 req'd */
828 }
829 
830 HIDE int
831 eso_halt_output(hdl)
832 	void *hdl;
833 {
834 	struct eso_softc *sc = hdl;
835 	int error, s;
836 
837 	DPRINTF(("%s: halt_output\n", sc->sc_dev.dv_xname));
838 
839 	/*
840 	 * Disable auto-initialize DMA, allowing the FIFO to drain and then
841 	 * stop.  The interrupt callback pointer is cleared at this
842 	 * point so that an outstanding FIFO interrupt for the remaining data
843 	 * will be acknowledged without further processing.
844 	 *
845 	 * This does not immediately `abort' an operation in progress (c.f.
846 	 * audio(9)) but is the method to leave the FIFO behind in a clean
847 	 * state with the least hair.  (Besides, that item needs to be
848 	 * rephrased for trigger_*()-based DMA environments.)
849 	 */
850 	s = splaudio();
851 	eso_write_mixreg(sc, ESO_MIXREG_A2C1,
852 	    ESO_MIXREG_A2C1_FIFOENB | ESO_MIXREG_A2C1_DMAENB);
853 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAM,
854 	    ESO_IO_A2DMAM_DMAENB);
855 
856 	sc->sc_pintr = NULL;
857 	error = tsleep(&sc->sc_pintr, PCATCH | PWAIT, "esoho", hz);
858 	splx(s);
859 
860 	/* Shut down DMA completely. */
861 	eso_write_mixreg(sc, ESO_MIXREG_A2C1, 0);
862 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAM, 0);
863 
864 	return (error == EWOULDBLOCK ? 0 : error);
865 }
866 
867 HIDE int
868 eso_halt_input(hdl)
869 	void *hdl;
870 {
871 	struct eso_softc *sc = hdl;
872 	int error, s;
873 
874 	DPRINTF(("%s: halt_input\n", sc->sc_dev.dv_xname));
875 
876 	/* Just like eso_halt_output(), but for Audio 1. */
877 	s = splaudio();
878 	eso_write_ctlreg(sc, ESO_CTLREG_A1C2,
879 	    ESO_CTLREG_A1C2_READ | ESO_CTLREG_A1C2_ADC |
880 	    ESO_CTLREG_A1C2_DMAENB);
881 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MODE,
882 	    DMA37MD_WRITE | DMA37MD_DEMAND);
883 
884 	sc->sc_rintr = NULL;
885 	error = tsleep(&sc->sc_rintr, PCATCH | PWAIT, "esohi", hz);
886 	splx(s);
887 
888 	/* Shut down DMA completely. */
889 	eso_write_ctlreg(sc, ESO_CTLREG_A1C2,
890 	    ESO_CTLREG_A1C2_READ | ESO_CTLREG_A1C2_ADC);
891 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MASK,
892 	    ESO_DMAC_MASK_MASK);
893 
894 	return (error == EWOULDBLOCK ? 0 : error);
895 }
896 
897 /* ARGSUSED */
898 HIDE int
899 eso_getdev(hdl, retp)
900 	void *hdl;
901 	struct audio_device *retp;
902 {
903 	struct eso_softc *sc = hdl;
904 
905 	strlcpy(retp->name, "ESS Solo-1", sizeof retp->name);
906 	snprintf(retp->version, sizeof retp->version, "0x%02x",
907 	    sc->sc_revision);
908 	if (sc->sc_revision <=
909 	    sizeof (eso_rev2model) / sizeof (eso_rev2model[0]))
910 		strlcpy(retp->config, eso_rev2model[sc->sc_revision],
911 		    sizeof retp->config);
912 	else
913 		strlcpy(retp->config, "unknown", sizeof retp->config);
914 
915 	return (0);
916 }
917 
918 HIDE int
919 eso_set_port(hdl, cp)
920 	void *hdl;
921 	mixer_ctrl_t *cp;
922 {
923 	struct eso_softc *sc = hdl;
924 	unsigned int lgain, rgain;
925 	uint8_t tmp;
926 
927 	switch (cp->dev) {
928 	case ESO_DAC_PLAY_VOL:
929 	case ESO_MIC_PLAY_VOL:
930 	case ESO_LINE_PLAY_VOL:
931 	case ESO_SYNTH_PLAY_VOL:
932 	case ESO_CD_PLAY_VOL:
933 	case ESO_AUXB_PLAY_VOL:
934 	case ESO_RECORD_VOL:
935 	case ESO_DAC_REC_VOL:
936 	case ESO_MIC_REC_VOL:
937 	case ESO_LINE_REC_VOL:
938 	case ESO_SYNTH_REC_VOL:
939 	case ESO_CD_REC_VOL:
940 	case ESO_AUXB_REC_VOL:
941 		if (cp->type != AUDIO_MIXER_VALUE)
942 			return (EINVAL);
943 
944 		/*
945 		 * Stereo-capable mixer ports: if we get a single-channel
946 		 * gain value passed in, then we duplicate it to both left
947 		 * and right channels.
948 		 */
949 		switch (cp->un.value.num_channels) {
950 		case 1:
951 			lgain = rgain = ESO_GAIN_TO_4BIT(
952 			    cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
953 			break;
954 		case 2:
955 			lgain = ESO_GAIN_TO_4BIT(
956 			    cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT]);
957 			rgain = ESO_GAIN_TO_4BIT(
958 			    cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT]);
959 			break;
960 		default:
961 			return (EINVAL);
962 		}
963 
964 		sc->sc_gain[cp->dev][ESO_LEFT] = lgain;
965 		sc->sc_gain[cp->dev][ESO_RIGHT] = rgain;
966 		eso_set_gain(sc, cp->dev);
967 		break;
968 
969 	case ESO_MASTER_VOL:
970 		if (cp->type != AUDIO_MIXER_VALUE)
971 			return (EINVAL);
972 
973 		/* Like above, but a precision of 6 bits. */
974 		switch (cp->un.value.num_channels) {
975 		case 1:
976 			lgain = rgain = ESO_GAIN_TO_6BIT(
977 			    cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
978 			break;
979 		case 2:
980 			lgain = ESO_GAIN_TO_6BIT(
981 			    cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT]);
982 			rgain = ESO_GAIN_TO_6BIT(
983 			    cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT]);
984 			break;
985 		default:
986 			return (EINVAL);
987 		}
988 
989 		sc->sc_gain[cp->dev][ESO_LEFT] = lgain;
990 		sc->sc_gain[cp->dev][ESO_RIGHT] = rgain;
991 		eso_set_gain(sc, cp->dev);
992 		break;
993 
994 	case ESO_SPATIALIZER:
995 		if (cp->type != AUDIO_MIXER_VALUE ||
996 		    cp->un.value.num_channels != 1)
997 			return (EINVAL);
998 
999 		sc->sc_gain[cp->dev][ESO_LEFT] =
1000 		    sc->sc_gain[cp->dev][ESO_RIGHT] =
1001 		    ESO_GAIN_TO_6BIT(
1002 			cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
1003 		eso_set_gain(sc, cp->dev);
1004 		break;
1005 
1006 	case ESO_MONO_PLAY_VOL:
1007 	case ESO_MONO_REC_VOL:
1008 		if (cp->type != AUDIO_MIXER_VALUE ||
1009 		    cp->un.value.num_channels != 1)
1010 			return (EINVAL);
1011 
1012 		sc->sc_gain[cp->dev][ESO_LEFT] =
1013 		    sc->sc_gain[cp->dev][ESO_RIGHT] =
1014 		    ESO_GAIN_TO_4BIT(
1015 			cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
1016 		eso_set_gain(sc, cp->dev);
1017 		break;
1018 
1019 	case ESO_PCSPEAKER_VOL:
1020 		if (cp->type != AUDIO_MIXER_VALUE ||
1021 		    cp->un.value.num_channels != 1)
1022 			return (EINVAL);
1023 
1024 		sc->sc_gain[cp->dev][ESO_LEFT] =
1025 		    sc->sc_gain[cp->dev][ESO_RIGHT] =
1026 		    ESO_GAIN_TO_3BIT(
1027 			cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
1028 		eso_set_gain(sc, cp->dev);
1029 		break;
1030 
1031 	case ESO_SPATIALIZER_ENABLE:
1032 		if (cp->type != AUDIO_MIXER_ENUM)
1033 			return (EINVAL);
1034 
1035 		sc->sc_spatializer = (cp->un.ord != 0);
1036 
1037 		tmp = eso_read_mixreg(sc, ESO_MIXREG_SPAT);
1038 		if (sc->sc_spatializer)
1039 			tmp |= ESO_MIXREG_SPAT_ENB;
1040 		else
1041 			tmp &= ~ESO_MIXREG_SPAT_ENB;
1042 		eso_write_mixreg(sc, ESO_MIXREG_SPAT,
1043 		    tmp | ESO_MIXREG_SPAT_RSTREL);
1044 		break;
1045 
1046 	case ESO_MONOOUT_SOURCE:
1047 		if (cp->type != AUDIO_MIXER_ENUM)
1048 			return (EINVAL);
1049 
1050 		sc->sc_monooutsrc = cp->un.ord;
1051 
1052 		tmp = eso_read_mixreg(sc, ESO_MIXREG_MPM);
1053 		tmp &= ~ESO_MIXREG_MPM_MOMASK;
1054 		tmp |= sc->sc_monooutsrc;
1055 		eso_write_mixreg(sc, ESO_MIXREG_MPM, tmp);
1056 		break;
1057 
1058 	case ESO_RECORD_MONITOR:
1059 		if (cp->type != AUDIO_MIXER_ENUM)
1060 			return (EINVAL);
1061 
1062 		sc->sc_recmon = (cp->un.ord != 0);
1063 
1064 		tmp = eso_read_ctlreg(sc, ESO_CTLREG_ACTL);
1065 		if (sc->sc_recmon)
1066 			tmp |= ESO_CTLREG_ACTL_RECMON;
1067 		else
1068 			tmp &= ~ESO_CTLREG_ACTL_RECMON;
1069 		eso_write_ctlreg(sc, ESO_CTLREG_ACTL, tmp);
1070 		break;
1071 
1072 	case ESO_RECORD_SOURCE:
1073 		if (cp->type != AUDIO_MIXER_ENUM)
1074 			return (EINVAL);
1075 
1076 		return (eso_set_recsrc(sc, cp->un.ord));
1077 
1078 	case ESO_MIC_PREAMP:
1079 		if (cp->type != AUDIO_MIXER_ENUM)
1080 			return (EINVAL);
1081 
1082 		sc->sc_preamp = (cp->un.ord != 0);
1083 
1084 		tmp = eso_read_mixreg(sc, ESO_MIXREG_MPM);
1085 		tmp &= ~ESO_MIXREG_MPM_RESV0;
1086 		if (sc->sc_preamp)
1087 			tmp |= ESO_MIXREG_MPM_PREAMP;
1088 		else
1089 			tmp &= ~ESO_MIXREG_MPM_PREAMP;
1090 		eso_write_mixreg(sc, ESO_MIXREG_MPM, tmp);
1091 		break;
1092 
1093 	default:
1094 		return (EINVAL);
1095 	}
1096 
1097 	return (0);
1098 }
1099 
1100 HIDE int
1101 eso_get_port(hdl, cp)
1102 	void *hdl;
1103 	mixer_ctrl_t *cp;
1104 {
1105 	struct eso_softc *sc = hdl;
1106 
1107 	switch (cp->dev) {
1108 	case ESO_DAC_PLAY_VOL:
1109 	case ESO_MIC_PLAY_VOL:
1110 	case ESO_LINE_PLAY_VOL:
1111 	case ESO_SYNTH_PLAY_VOL:
1112 	case ESO_CD_PLAY_VOL:
1113 	case ESO_AUXB_PLAY_VOL:
1114 	case ESO_MASTER_VOL:
1115 	case ESO_RECORD_VOL:
1116 	case ESO_DAC_REC_VOL:
1117 	case ESO_MIC_REC_VOL:
1118 	case ESO_LINE_REC_VOL:
1119 	case ESO_SYNTH_REC_VOL:
1120 	case ESO_CD_REC_VOL:
1121 	case ESO_AUXB_REC_VOL:
1122 		/*
1123 		 * Stereo-capable ports: if a single-channel query is made,
1124 		 * just return the left channel's value (since single-channel
1125 		 * settings themselves are applied to both channels).
1126 		 */
1127 		switch (cp->un.value.num_channels) {
1128 		case 1:
1129 			cp->un.value.level[AUDIO_MIXER_LEVEL_MONO] =
1130 			    sc->sc_gain[cp->dev][ESO_LEFT];
1131 			break;
1132 		case 2:
1133 			cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT] =
1134 			    sc->sc_gain[cp->dev][ESO_LEFT];
1135 			cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] =
1136 			    sc->sc_gain[cp->dev][ESO_RIGHT];
1137 			break;
1138 		default:
1139 			return (EINVAL);
1140 		}
1141 		break;
1142 
1143 	case ESO_MONO_PLAY_VOL:
1144 	case ESO_PCSPEAKER_VOL:
1145 	case ESO_MONO_REC_VOL:
1146 	case ESO_SPATIALIZER:
1147 		if (cp->un.value.num_channels != 1)
1148 			return (EINVAL);
1149 		cp->un.value.level[AUDIO_MIXER_LEVEL_MONO] =
1150 		    sc->sc_gain[cp->dev][ESO_LEFT];
1151 		break;
1152 
1153 	case ESO_RECORD_MONITOR:
1154 		cp->un.ord = sc->sc_recmon;
1155 		break;
1156 
1157 	case ESO_RECORD_SOURCE:
1158 		cp->un.ord = sc->sc_recsrc;
1159 		break;
1160 
1161 	case ESO_MONOOUT_SOURCE:
1162 		cp->un.ord = sc->sc_monooutsrc;
1163 		break;
1164 
1165 	case ESO_SPATIALIZER_ENABLE:
1166 		cp->un.ord = sc->sc_spatializer;
1167 		break;
1168 
1169 	case ESO_MIC_PREAMP:
1170 		cp->un.ord = sc->sc_preamp;
1171 		break;
1172 
1173 	default:
1174 		return (EINVAL);
1175 	}
1176 
1177 
1178 	return (0);
1179 
1180 }
1181 
1182 HIDE int
1183 eso_query_devinfo(hdl, dip)
1184 	void *hdl;
1185 	mixer_devinfo_t *dip;
1186 {
1187 
1188 	switch (dip->index) {
1189 	case ESO_DAC_PLAY_VOL:
1190 		dip->mixer_class = ESO_INPUT_CLASS;
1191 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1192 		strlcpy(dip->label.name, AudioNdac, sizeof dip->label.name);
1193 		dip->type = AUDIO_MIXER_VALUE;
1194 		dip->un.v.num_channels = 2;
1195 		strlcpy(dip->un.v.units.name, AudioNvolume,
1196 		    sizeof dip->un.v.units.name);
1197 		break;
1198 	case ESO_MIC_PLAY_VOL:
1199 		dip->mixer_class = ESO_INPUT_CLASS;
1200 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1201 		strlcpy(dip->label.name, AudioNmicrophone,
1202 		    sizeof dip->label.name);
1203 		dip->type = AUDIO_MIXER_VALUE;
1204 		dip->un.v.num_channels = 2;
1205 		strlcpy(dip->un.v.units.name, AudioNvolume,
1206 		    sizeof dip->un.v.units.name);
1207 		break;
1208 	case ESO_LINE_PLAY_VOL:
1209 		dip->mixer_class = ESO_INPUT_CLASS;
1210 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1211 		strlcpy(dip->label.name, AudioNline, sizeof dip->label.name);
1212 		dip->type = AUDIO_MIXER_VALUE;
1213 		dip->un.v.num_channels = 2;
1214 		strlcpy(dip->un.v.units.name, AudioNvolume,
1215 		    sizeof dip->un.v.units.name);
1216 		break;
1217 	case ESO_SYNTH_PLAY_VOL:
1218 		dip->mixer_class = ESO_INPUT_CLASS;
1219 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1220 		strlcpy(dip->label.name, AudioNfmsynth,
1221 		    sizeof dip->label.name);
1222 		dip->type = AUDIO_MIXER_VALUE;
1223 		dip->un.v.num_channels = 2;
1224 		strlcpy(dip->un.v.units.name, AudioNvolume,
1225 		    sizeof dip->un.v.units.name);
1226 		break;
1227 	case ESO_MONO_PLAY_VOL:
1228 		dip->mixer_class = ESO_INPUT_CLASS;
1229 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1230 		strlcpy(dip->label.name, "mono_in", sizeof dip->label.name);
1231 		dip->type = AUDIO_MIXER_VALUE;
1232 		dip->un.v.num_channels = 1;
1233 		strlcpy(dip->un.v.units.name, AudioNvolume,
1234 		    sizeof dip->un.v.units.name);
1235 		break;
1236 	case ESO_CD_PLAY_VOL:
1237 		dip->mixer_class = ESO_INPUT_CLASS;
1238 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1239 		strlcpy(dip->label.name, AudioNcd, sizeof dip->label.name);
1240 		dip->type = AUDIO_MIXER_VALUE;
1241 		dip->un.v.num_channels = 2;
1242 		strlcpy(dip->un.v.units.name, AudioNvolume,
1243 		    sizeof dip->un.v.units.name);
1244 		break;
1245 	case ESO_AUXB_PLAY_VOL:
1246 		dip->mixer_class = ESO_INPUT_CLASS;
1247 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1248 		strlcpy(dip->label.name, "auxb", sizeof dip->label.name);
1249 		dip->type = AUDIO_MIXER_VALUE;
1250 		dip->un.v.num_channels = 2;
1251 		strlcpy(dip->un.v.units.name, AudioNvolume,
1252 		    sizeof dip->un.v.units.name);
1253 		break;
1254 
1255 	case ESO_MIC_PREAMP:
1256 		dip->mixer_class = ESO_MICROPHONE_CLASS;
1257 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1258 		strlcpy(dip->label.name, AudioNpreamp, sizeof dip->label.name);
1259 		dip->type = AUDIO_MIXER_ENUM;
1260 		dip->un.e.num_mem = 2;
1261 		strlcpy(dip->un.e.member[0].label.name, AudioNoff,
1262 		    sizeof dip->un.e.member[0].label.name);
1263 		dip->un.e.member[0].ord = 0;
1264 		strlcpy(dip->un.e.member[1].label.name, AudioNon,
1265 		    sizeof dip->un.e.member[1].label.name);
1266 		dip->un.e.member[1].ord = 1;
1267 		break;
1268 	case ESO_MICROPHONE_CLASS:
1269 		dip->mixer_class = ESO_MICROPHONE_CLASS;
1270 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1271 		strlcpy(dip->label.name, AudioNmicrophone,
1272 		    sizeof dip->label.name);
1273 		dip->type = AUDIO_MIXER_CLASS;
1274 		break;
1275 
1276 	case ESO_INPUT_CLASS:
1277 		dip->mixer_class = ESO_INPUT_CLASS;
1278 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1279 		strlcpy(dip->label.name, AudioCinputs, sizeof dip->label.name);
1280 		dip->type = AUDIO_MIXER_CLASS;
1281 		break;
1282 
1283 	case ESO_MASTER_VOL:
1284 		dip->mixer_class = ESO_OUTPUT_CLASS;
1285 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1286 		strlcpy(dip->label.name, AudioNmaster, sizeof dip->label.name);
1287 		dip->type = AUDIO_MIXER_VALUE;
1288 		dip->un.v.num_channels = 2;
1289 		strlcpy(dip->un.v.units.name, AudioNvolume,
1290 		    sizeof dip->un.v.units.name);
1291 		break;
1292 	case ESO_PCSPEAKER_VOL:
1293 		dip->mixer_class = ESO_OUTPUT_CLASS;
1294 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1295 		strlcpy(dip->label.name, "pc_speaker", sizeof dip->label.name);
1296 		dip->type = AUDIO_MIXER_VALUE;
1297 		dip->un.v.num_channels = 1;
1298 		strlcpy(dip->un.v.units.name, AudioNvolume,
1299 		    sizeof dip->un.v.units.name);
1300 		break;
1301 	case ESO_MONOOUT_SOURCE:
1302 		dip->mixer_class = ESO_OUTPUT_CLASS;
1303 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1304 		strlcpy(dip->label.name, "mono_out", sizeof dip->label.name);
1305 		dip->type = AUDIO_MIXER_ENUM;
1306 		dip->un.e.num_mem = 3;
1307 		strlcpy(dip->un.e.member[0].label.name, AudioNmute,
1308 		    sizeof dip->un.e.member[0].label.name);
1309 		dip->un.e.member[0].ord = ESO_MIXREG_MPM_MOMUTE;
1310 		strlcpy(dip->un.e.member[1].label.name, AudioNdac,
1311 		    sizeof dip->un.e.member[1].label.name);
1312 		dip->un.e.member[1].ord = ESO_MIXREG_MPM_MOA2R;
1313 		strlcpy(dip->un.e.member[2].label.name, AudioNmixerout,
1314 		    sizeof dip->un.e.member[2].label.name);
1315 		dip->un.e.member[2].ord = ESO_MIXREG_MPM_MOREC;
1316 		break;
1317 	case ESO_SPATIALIZER:
1318 		dip->mixer_class = ESO_OUTPUT_CLASS;
1319 		dip->prev = AUDIO_MIXER_LAST;
1320 		dip->next = ESO_SPATIALIZER_ENABLE;
1321 		strlcpy(dip->label.name, AudioNspatial,
1322 		    sizeof dip->label.name);
1323 		dip->type = AUDIO_MIXER_VALUE;
1324 		dip->un.v.num_channels = 1;
1325 		strlcpy(dip->un.v.units.name, "level",
1326 		    sizeof dip->un.v.units.name);
1327 		break;
1328 	case ESO_SPATIALIZER_ENABLE:
1329 		dip->mixer_class = ESO_OUTPUT_CLASS;
1330 		dip->prev = ESO_SPATIALIZER;
1331 		dip->next = AUDIO_MIXER_LAST;
1332 		strlcpy(dip->label.name, "enable", sizeof dip->label.name);
1333 		dip->type = AUDIO_MIXER_ENUM;
1334 		dip->un.e.num_mem = 2;
1335 		strlcpy(dip->un.e.member[0].label.name, AudioNoff,
1336 		    sizeof dip->un.e.member[0].label.name);
1337 		dip->un.e.member[0].ord = 0;
1338 		strlcpy(dip->un.e.member[1].label.name, AudioNon,
1339 		    sizeof dip->un.e.member[1].label.name);
1340 		dip->un.e.member[1].ord = 1;
1341 		break;
1342 
1343 	case ESO_OUTPUT_CLASS:
1344 		dip->mixer_class = ESO_OUTPUT_CLASS;
1345 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1346 		strlcpy(dip->label.name, AudioCoutputs,
1347 		    sizeof dip->label.name);
1348 		dip->type = AUDIO_MIXER_CLASS;
1349 		break;
1350 
1351 	case ESO_RECORD_MONITOR:
1352 		dip->mixer_class = ESO_MONITOR_CLASS;
1353 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1354 		strlcpy(dip->label.name, AudioNmute, sizeof dip->label.name);
1355 		dip->type = AUDIO_MIXER_ENUM;
1356 		dip->un.e.num_mem = 2;
1357 		strlcpy(dip->un.e.member[0].label.name, AudioNoff,
1358 		    sizeof dip->un.e.member[0].label.name);
1359 		dip->un.e.member[0].ord = 0;
1360 		strlcpy(dip->un.e.member[1].label.name, AudioNon,
1361 		    sizeof dip->un.e.member[1].label.name);
1362 		dip->un.e.member[1].ord = 1;
1363 		break;
1364 	case ESO_MONITOR_CLASS:
1365 		dip->mixer_class = ESO_MONITOR_CLASS;
1366 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1367 		strlcpy(dip->label.name, AudioCmonitor,
1368 		    sizeof dip->label.name);
1369 		dip->type = AUDIO_MIXER_CLASS;
1370 		break;
1371 
1372 	case ESO_RECORD_VOL:
1373 		dip->mixer_class = ESO_RECORD_CLASS;
1374 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1375 		strlcpy(dip->label.name, AudioNrecord, sizeof dip->label.name);
1376 		dip->type = AUDIO_MIXER_VALUE;
1377 		strlcpy(dip->un.v.units.name, AudioNvolume,
1378 		    sizeof dip->un.v.units.name);
1379 		break;
1380 	case ESO_RECORD_SOURCE:
1381 		dip->mixer_class = ESO_RECORD_CLASS;
1382 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1383 		strlcpy(dip->label.name, AudioNsource, sizeof dip->label.name);
1384 		dip->type = AUDIO_MIXER_ENUM;
1385 		dip->un.e.num_mem = 4;
1386 		strlcpy(dip->un.e.member[0].label.name, AudioNmicrophone,
1387 		    sizeof dip->un.e.member[0].label.name);
1388 		dip->un.e.member[0].ord = ESO_MIXREG_ERS_MIC;
1389 		strlcpy(dip->un.e.member[1].label.name, AudioNline,
1390 		    sizeof dip->un.e.member[1].label.name);
1391 		dip->un.e.member[1].ord = ESO_MIXREG_ERS_LINE;
1392 		strlcpy(dip->un.e.member[2].label.name, AudioNcd,
1393 		    sizeof dip->un.e.member[2].label.name);
1394 		dip->un.e.member[2].ord = ESO_MIXREG_ERS_CD;
1395 		strlcpy(dip->un.e.member[3].label.name, AudioNmixerout,
1396 		    sizeof dip->un.e.member[3].label.name);
1397 		dip->un.e.member[3].ord = ESO_MIXREG_ERS_MIXER;
1398 		break;
1399 	case ESO_DAC_REC_VOL:
1400 		dip->mixer_class = ESO_RECORD_CLASS;
1401 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1402 		strlcpy(dip->label.name, AudioNdac, sizeof dip->label.name);
1403 		dip->type = AUDIO_MIXER_VALUE;
1404 		dip->un.v.num_channels = 2;
1405 		strlcpy(dip->un.v.units.name, AudioNvolume,
1406 		    sizeof dip->un.v.units.name);
1407 		break;
1408 	case ESO_MIC_REC_VOL:
1409 		dip->mixer_class = ESO_RECORD_CLASS;
1410 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1411 		strlcpy(dip->label.name, AudioNmicrophone,
1412 		    sizeof dip->label.name);
1413 		dip->type = AUDIO_MIXER_VALUE;
1414 		dip->un.v.num_channels = 2;
1415 		strlcpy(dip->un.v.units.name, AudioNvolume,
1416 		    sizeof dip->un.v.units.name);
1417 		break;
1418 	case ESO_LINE_REC_VOL:
1419 		dip->mixer_class = ESO_RECORD_CLASS;
1420 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1421 		strlcpy(dip->label.name, AudioNline, sizeof dip->label.name);
1422 		dip->type = AUDIO_MIXER_VALUE;
1423 		dip->un.v.num_channels = 2;
1424 		strlcpy(dip->un.v.units.name, AudioNvolume,
1425 		    sizeof dip->un.v.units.name);
1426 		break;
1427 	case ESO_SYNTH_REC_VOL:
1428 		dip->mixer_class = ESO_RECORD_CLASS;
1429 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1430 		strlcpy(dip->label.name, AudioNfmsynth,
1431 		    sizeof dip->label.name);
1432 		dip->type = AUDIO_MIXER_VALUE;
1433 		dip->un.v.num_channels = 2;
1434 		strlcpy(dip->un.v.units.name, AudioNvolume,
1435 		    sizeof dip->un.v.units.name);
1436 		break;
1437 	case ESO_MONO_REC_VOL:
1438 		dip->mixer_class = ESO_RECORD_CLASS;
1439 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1440 		strlcpy(dip->label.name, "mono_in", sizeof dip->label.name);
1441 		dip->type = AUDIO_MIXER_VALUE;
1442 		dip->un.v.num_channels = 1; /* No lies */
1443 		strlcpy(dip->un.v.units.name, AudioNvolume,
1444 		    sizeof dip->un.v.units.name);
1445 		break;
1446 	case ESO_CD_REC_VOL:
1447 		dip->mixer_class = ESO_RECORD_CLASS;
1448 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1449 		strlcpy(dip->label.name, AudioNcd, sizeof dip->label.name);
1450 		dip->type = AUDIO_MIXER_VALUE;
1451 		dip->un.v.num_channels = 2;
1452 		strlcpy(dip->un.v.units.name, AudioNvolume,
1453 		    sizeof dip->un.v.units.name);
1454 		break;
1455 	case ESO_AUXB_REC_VOL:
1456 		dip->mixer_class = ESO_RECORD_CLASS;
1457 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1458 		strlcpy(dip->label.name, "auxb", sizeof dip->label.name);
1459 		dip->type = AUDIO_MIXER_VALUE;
1460 		dip->un.v.num_channels = 2;
1461 		strlcpy(dip->un.v.units.name, AudioNvolume,
1462 		    sizeof dip->un.v.units.name);
1463 		break;
1464 	case ESO_RECORD_CLASS:
1465 		dip->mixer_class = ESO_RECORD_CLASS;
1466 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1467 		strlcpy(dip->label.name, AudioCrecord, sizeof dip->label.name);
1468 		dip->type = AUDIO_MIXER_CLASS;
1469 		break;
1470 
1471 	default:
1472 		return (ENXIO);
1473 	}
1474 
1475 	return (0);
1476 }
1477 
1478 HIDE int
1479 eso_allocmem(sc, size, align, boundary, flags, ed)
1480 	struct eso_softc *sc;
1481 	size_t size;
1482 	size_t align;
1483 	size_t boundary;
1484 	int flags;
1485 	struct eso_dma *ed;
1486 {
1487 	int error, wait;
1488 
1489 	wait = (flags & M_NOWAIT) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK;
1490 	ed->ed_size = size;
1491 
1492 	error = bus_dmamem_alloc(sc->sc_dmat, ed->ed_size, align, boundary,
1493 	    ed->ed_segs, sizeof (ed->ed_segs) / sizeof (ed->ed_segs[0]),
1494 	    &ed->ed_nsegs, wait);
1495 	if (error)
1496 		goto out;
1497 
1498 	error = bus_dmamem_map(sc->sc_dmat, ed->ed_segs, ed->ed_nsegs,
1499 	    ed->ed_size, &ed->ed_addr, wait | BUS_DMA_COHERENT);
1500 	if (error)
1501 		goto free;
1502 
1503 	error = bus_dmamap_create(sc->sc_dmat, ed->ed_size, 1, ed->ed_size, 0,
1504 	    wait, &ed->ed_map);
1505 	if (error)
1506 		goto unmap;
1507 
1508 	error = bus_dmamap_load(sc->sc_dmat, ed->ed_map, ed->ed_addr,
1509 	    ed->ed_size, NULL, wait);
1510 	if (error)
1511 		goto destroy;
1512 
1513 	return (0);
1514 
1515  destroy:
1516 	bus_dmamap_destroy(sc->sc_dmat, ed->ed_map);
1517  unmap:
1518 	bus_dmamem_unmap(sc->sc_dmat, ed->ed_addr, ed->ed_size);
1519  free:
1520 	bus_dmamem_free(sc->sc_dmat, ed->ed_segs, ed->ed_nsegs);
1521  out:
1522 	return (error);
1523 }
1524 
1525 HIDE void
1526 eso_freemem(sc, ed)
1527 	struct eso_softc *sc;
1528 	struct eso_dma *ed;
1529 {
1530 
1531 	bus_dmamap_unload(sc->sc_dmat, ed->ed_map);
1532 	bus_dmamap_destroy(sc->sc_dmat, ed->ed_map);
1533 	bus_dmamem_unmap(sc->sc_dmat, ed->ed_addr, ed->ed_size);
1534 	bus_dmamem_free(sc->sc_dmat, ed->ed_segs, ed->ed_nsegs);
1535 }
1536 
1537 HIDE void *
1538 eso_allocm(hdl, direction, size, type, flags)
1539 	void *hdl;
1540 	int direction;
1541 	size_t size;
1542 	int type, flags;
1543 {
1544 	struct eso_softc *sc = hdl;
1545 	struct eso_dma *ed;
1546 	size_t boundary;
1547 	int error;
1548 
1549 	if ((ed = malloc(size, type, flags)) == NULL)
1550 		return (NULL);
1551 
1552 	/*
1553 	 * Apparently the Audio 1 DMA controller's current address
1554 	 * register can't roll over a 64K address boundary, so we have to
1555 	 * take care of that ourselves.  The second channel DMA controller
1556 	 * doesn't have that restriction, however.
1557 	 */
1558 	if (direction == AUMODE_RECORD)
1559 		boundary = 0x10000;
1560 	else
1561 		boundary = 0;
1562 
1563 
1564 	error = eso_allocmem(sc, size, 32, boundary, flags, ed);
1565 	if (error) {
1566 		free(ed, type);
1567 		return (NULL);
1568 	}
1569 	ed->ed_next = sc->sc_dmas;
1570 	sc->sc_dmas = ed;
1571 
1572 	return (KVADDR(ed));
1573 }
1574 
1575 HIDE void
1576 eso_freem(hdl, addr, type)
1577 	void *hdl;
1578 	void *addr;
1579 	int type;
1580 {
1581 	struct eso_softc *sc = hdl;
1582 	struct eso_dma *p, **pp;
1583 
1584 	for (pp = &sc->sc_dmas; (p = *pp) != NULL; pp = &p->ed_next) {
1585 		if (KVADDR(p) == addr) {
1586 			eso_freemem(sc, p);
1587 			*pp = p->ed_next;
1588 			free(p, type);
1589 			return;
1590 		}
1591 	}
1592 }
1593 
1594 HIDE size_t
1595 eso_round_buffersize(hdl, direction, bufsize)
1596 	void *hdl;
1597 	int direction;
1598 	size_t bufsize;
1599 {
1600 
1601 	/* 64K restriction: ISA at eleven? */
1602 	if (bufsize > 65536)
1603 		bufsize = 65536;
1604 
1605 	return (bufsize);
1606 }
1607 
1608 HIDE paddr_t
1609 eso_mappage(hdl, addr, offs, prot)
1610 	void *hdl;
1611 	void *addr;
1612 	off_t offs;
1613 	int prot;
1614 {
1615 	struct eso_softc *sc = hdl;
1616 	struct eso_dma *ed;
1617 
1618 	if (offs < 0)
1619 		return (-1);
1620 	for (ed = sc->sc_dmas; ed != NULL && KVADDR(ed) == addr;
1621 	     ed = ed->ed_next)
1622 		;
1623 	if (ed == NULL)
1624 		return (-1);
1625 
1626 	return (bus_dmamem_mmap(sc->sc_dmat, ed->ed_segs, ed->ed_nsegs,
1627 	    offs, prot, BUS_DMA_WAITOK));
1628 }
1629 
1630 /* ARGSUSED */
1631 HIDE int
1632 eso_get_props(hdl)
1633 	void *hdl;
1634 {
1635 
1636 	return (AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT |
1637 	    AUDIO_PROP_FULLDUPLEX);
1638 }
1639 
1640 HIDE int
1641 eso_trigger_output(hdl, start, end, blksize, intr, arg, param)
1642 	void *hdl;
1643 	void *start, *end;
1644 	int blksize;
1645 	void (*intr)(void *);
1646 	void *arg;
1647 	struct audio_params *param;
1648 {
1649 	struct eso_softc *sc = hdl;
1650 	struct eso_dma *ed;
1651 	uint8_t a2c1;
1652 
1653 	DPRINTF((
1654 	    "%s: trigger_output: start %p, end %p, blksize %d, intr %p(%p)\n",
1655 	    sc->sc_dev.dv_xname, start, end, blksize, intr, arg));
1656 	DPRINTF(("%s: param: rate %lu, encoding %u, precision %u, channels %u, sw_code %p, factor %d\n",
1657 	    sc->sc_dev.dv_xname, param->sample_rate, param->encoding,
1658 	    param->precision, param->channels, param->sw_code, param->factor));
1659 
1660 	/* Find DMA buffer. */
1661 	for (ed = sc->sc_dmas; ed != NULL && KVADDR(ed) != start;
1662 	     ed = ed->ed_next)
1663 		;
1664 	if (ed == NULL) {
1665 		printf("%s: trigger_output: bad addr %p\n",
1666 		    sc->sc_dev.dv_xname, start);
1667 		return (EINVAL);
1668 	}
1669 
1670 	sc->sc_pintr = intr;
1671 	sc->sc_parg = arg;
1672 
1673 	/* DMA transfer count (in `words'!) reload using 2's complement. */
1674 	blksize = -(blksize >> 1);
1675 	eso_write_mixreg(sc, ESO_MIXREG_A2TCRLO, blksize & 0xff);
1676 	eso_write_mixreg(sc, ESO_MIXREG_A2TCRHI, blksize >> 8);
1677 
1678 	/* Update DAC to reflect DMA count and audio parameters. */
1679 	/* Note: we cache A2C2 in order to avoid r/m/w at interrupt time. */
1680 	if (param->precision * param->factor == 16)
1681 		sc->sc_a2c2 |= ESO_MIXREG_A2C2_16BIT;
1682 	else
1683 		sc->sc_a2c2 &= ~ESO_MIXREG_A2C2_16BIT;
1684 	if (param->channels == 2)
1685 		sc->sc_a2c2 |= ESO_MIXREG_A2C2_STEREO;
1686 	else
1687 		sc->sc_a2c2 &= ~ESO_MIXREG_A2C2_STEREO;
1688 	if (param->encoding == AUDIO_ENCODING_SLINEAR_BE ||
1689 	    param->encoding == AUDIO_ENCODING_SLINEAR_LE)
1690 		sc->sc_a2c2 |= ESO_MIXREG_A2C2_SIGNED;
1691 	else
1692 		sc->sc_a2c2 &= ~ESO_MIXREG_A2C2_SIGNED;
1693 	/* Unmask IRQ. */
1694 	sc->sc_a2c2 |= ESO_MIXREG_A2C2_IRQM;
1695 	eso_write_mixreg(sc, ESO_MIXREG_A2C2, sc->sc_a2c2);
1696 
1697 	/* Set up DMA controller. */
1698 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAA, DMAADDR(ed));
1699 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAC,
1700 	    (uint8_t *)end - (uint8_t *)start);
1701 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAM,
1702 	    ESO_IO_A2DMAM_DMAENB | ESO_IO_A2DMAM_AUTO);
1703 
1704 	/* Start DMA. */
1705 	a2c1 = eso_read_mixreg(sc, ESO_MIXREG_A2C1);
1706 	a2c1 &= ~ESO_MIXREG_A2C1_RESV0; /* Paranoia? XXX bit 5 */
1707 	a2c1 |= ESO_MIXREG_A2C1_FIFOENB | ESO_MIXREG_A2C1_DMAENB |
1708 	    ESO_MIXREG_A2C1_AUTO;
1709 	eso_write_mixreg(sc, ESO_MIXREG_A2C1, a2c1);
1710 
1711 	return (0);
1712 }
1713 
1714 HIDE int
1715 eso_trigger_input(hdl, start, end, blksize, intr, arg, param)
1716 	void *hdl;
1717 	void *start, *end;
1718 	int blksize;
1719 	void (*intr)(void *);
1720 	void *arg;
1721 	struct audio_params *param;
1722 {
1723 	struct eso_softc *sc = hdl;
1724 	struct eso_dma *ed;
1725 	uint8_t actl, a1c1;
1726 
1727 	DPRINTF((
1728 	    "%s: trigger_input: start %p, end %p, blksize %d, intr %p(%p)\n",
1729 	    sc->sc_dev.dv_xname, start, end, blksize, intr, arg));
1730 	DPRINTF(("%s: param: rate %lu, encoding %u, precision %u, channels %u, sw_code %p, factor %d\n",
1731 	    sc->sc_dev.dv_xname, param->sample_rate, param->encoding,
1732 	    param->precision, param->channels, param->sw_code, param->factor));
1733 
1734 	/*
1735 	 * If we failed to configure the Audio 1 DMA controller, bail here
1736 	 * while retaining availability of the DAC direction (in Audio 2).
1737 	 */
1738 	if (!sc->sc_dmac_configured)
1739 		return (EIO);
1740 
1741 	/* Find DMA buffer. */
1742 	for (ed = sc->sc_dmas; ed != NULL && KVADDR(ed) != start;
1743 	     ed = ed->ed_next)
1744 		;
1745 	if (ed == NULL) {
1746 		printf("%s: trigger_output: bad addr %p\n",
1747 		    sc->sc_dev.dv_xname, start);
1748 		return (EINVAL);
1749 	}
1750 
1751 	sc->sc_rintr = intr;
1752 	sc->sc_rarg = arg;
1753 
1754 	/* Set up ADC DMA converter parameters. */
1755 	actl = eso_read_ctlreg(sc, ESO_CTLREG_ACTL);
1756 	if (param->channels == 2) {
1757 		actl &= ~ESO_CTLREG_ACTL_MONO;
1758 		actl |= ESO_CTLREG_ACTL_STEREO;
1759 	} else {
1760 		actl &= ~ESO_CTLREG_ACTL_STEREO;
1761 		actl |= ESO_CTLREG_ACTL_MONO;
1762 	}
1763 	eso_write_ctlreg(sc, ESO_CTLREG_ACTL, actl);
1764 
1765 	/* Set up Transfer Type: maybe move to attach time? */
1766 	eso_write_ctlreg(sc, ESO_CTLREG_A1TT, ESO_CTLREG_A1TT_DEMAND4);
1767 
1768 	/* DMA transfer count reload using 2's complement. */
1769 	blksize = -blksize;
1770 	eso_write_ctlreg(sc, ESO_CTLREG_A1TCRLO, blksize & 0xff);
1771 	eso_write_ctlreg(sc, ESO_CTLREG_A1TCRHI, blksize >> 8);
1772 
1773 	/* Set up and enable Audio 1 DMA FIFO. */
1774 	a1c1 = ESO_CTLREG_A1C1_RESV1 | ESO_CTLREG_A1C1_FIFOENB;
1775 	if (param->precision * param->factor == 16)
1776 		a1c1 |= ESO_CTLREG_A1C1_16BIT;
1777 	if (param->channels == 2)
1778 		a1c1 |= ESO_CTLREG_A1C1_STEREO;
1779 	else
1780 		a1c1 |= ESO_CTLREG_A1C1_MONO;
1781 	if (param->encoding == AUDIO_ENCODING_SLINEAR_BE ||
1782 	    param->encoding == AUDIO_ENCODING_SLINEAR_LE)
1783 		a1c1 |= ESO_CTLREG_A1C1_SIGNED;
1784 	eso_write_ctlreg(sc, ESO_CTLREG_A1C1, a1c1);
1785 
1786 	/* Set up ADC IRQ/DRQ parameters. */
1787 	eso_write_ctlreg(sc, ESO_CTLREG_LAIC,
1788 	    ESO_CTLREG_LAIC_PINENB | ESO_CTLREG_LAIC_EXTENB);
1789 	eso_write_ctlreg(sc, ESO_CTLREG_DRQCTL,
1790 	    ESO_CTLREG_DRQCTL_ENB1 | ESO_CTLREG_DRQCTL_EXTENB);
1791 
1792 	/* Set up and enable DMA controller. */
1793 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_CLEAR, 0);
1794 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MASK,
1795 	    ESO_DMAC_MASK_MASK);
1796 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MODE,
1797 	    DMA37MD_WRITE | DMA37MD_LOOP | DMA37MD_DEMAND);
1798 	bus_space_write_4(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_DMAA,
1799 	    DMAADDR(ed));
1800 	bus_space_write_2(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_DMAC,
1801 	    (uint8_t *)end - (uint8_t *)start - 1);
1802 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MASK, 0);
1803 
1804 	/* Start DMA. */
1805 	eso_write_ctlreg(sc, ESO_CTLREG_A1C2,
1806 	    ESO_CTLREG_A1C2_DMAENB | ESO_CTLREG_A1C2_READ |
1807 	    ESO_CTLREG_A1C2_AUTO | ESO_CTLREG_A1C2_ADC);
1808 
1809 	return (0);
1810 }
1811 
1812 HIDE int
1813 eso_set_recsrc(sc, recsrc)
1814 	struct eso_softc *sc;
1815 	unsigned int recsrc;
1816 {
1817 
1818 	eso_write_mixreg(sc, ESO_MIXREG_ERS, recsrc);
1819 	sc->sc_recsrc = recsrc;
1820 	return (0);
1821 }
1822 
1823 HIDE void
1824 eso_set_gain(sc, port)
1825 	struct eso_softc *sc;
1826 	unsigned int port;
1827 {
1828 	uint8_t mixreg, tmp;
1829 
1830 	switch (port) {
1831 	case ESO_DAC_PLAY_VOL:
1832 		mixreg = ESO_MIXREG_PVR_A2;
1833 		break;
1834 	case ESO_MIC_PLAY_VOL:
1835 		mixreg = ESO_MIXREG_PVR_MIC;
1836 		break;
1837 	case ESO_LINE_PLAY_VOL:
1838 		mixreg = ESO_MIXREG_PVR_LINE;
1839 		break;
1840 	case ESO_SYNTH_PLAY_VOL:
1841 		mixreg = ESO_MIXREG_PVR_SYNTH;
1842 		break;
1843 	case ESO_CD_PLAY_VOL:
1844 		mixreg = ESO_MIXREG_PVR_CD;
1845 		break;
1846 	case ESO_AUXB_PLAY_VOL:
1847 		mixreg = ESO_MIXREG_PVR_AUXB;
1848 		break;
1849 
1850 	case ESO_DAC_REC_VOL:
1851 		mixreg = ESO_MIXREG_RVR_A2;
1852 		break;
1853 	case ESO_MIC_REC_VOL:
1854 		mixreg = ESO_MIXREG_RVR_MIC;
1855 		break;
1856 	case ESO_LINE_REC_VOL:
1857 		mixreg = ESO_MIXREG_RVR_LINE;
1858 		break;
1859 	case ESO_SYNTH_REC_VOL:
1860 		mixreg = ESO_MIXREG_RVR_SYNTH;
1861 		break;
1862 	case ESO_CD_REC_VOL:
1863 		mixreg = ESO_MIXREG_RVR_CD;
1864 		break;
1865 	case ESO_AUXB_REC_VOL:
1866 		mixreg = ESO_MIXREG_RVR_AUXB;
1867 		break;
1868 	case ESO_MONO_PLAY_VOL:
1869 		mixreg = ESO_MIXREG_PVR_MONO;
1870 		break;
1871 	case ESO_MONO_REC_VOL:
1872 		mixreg = ESO_MIXREG_RVR_MONO;
1873 		break;
1874 
1875 	case ESO_PCSPEAKER_VOL:
1876 		/* Special case - only 3-bit, mono, and reserved bits. */
1877 		tmp = eso_read_mixreg(sc, ESO_MIXREG_PCSVR);
1878 		tmp &= ESO_MIXREG_PCSVR_RESV;
1879 		/* Map bits 7:5 -> 2:0. */
1880 		tmp |= (sc->sc_gain[port][ESO_LEFT] >> 5);
1881 		eso_write_mixreg(sc, ESO_MIXREG_PCSVR, tmp);
1882 		return;
1883 
1884 	case ESO_MASTER_VOL:
1885 		/* Special case - separate regs, and 6-bit precision. */
1886 		/* Map bits 7:2 -> 5:0. */
1887 		eso_write_mixreg(sc, ESO_MIXREG_LMVM,
1888 		    sc->sc_gain[port][ESO_LEFT] >> 2);
1889 		eso_write_mixreg(sc, ESO_MIXREG_RMVM,
1890 		    sc->sc_gain[port][ESO_RIGHT] >> 2);
1891 		return;
1892 
1893 	case ESO_SPATIALIZER:
1894 		/* Special case - only `mono', and higher precision. */
1895 		eso_write_mixreg(sc, ESO_MIXREG_SPATLVL,
1896 		    sc->sc_gain[port][ESO_LEFT]);
1897 		return;
1898 
1899 	case ESO_RECORD_VOL:
1900 		/* Very Special case, controller register. */
1901 		eso_write_ctlreg(sc, ESO_CTLREG_RECLVL,ESO_4BIT_GAIN_TO_STEREO(
1902 		   sc->sc_gain[port][ESO_LEFT], sc->sc_gain[port][ESO_RIGHT]));
1903 		return;
1904 
1905 	default:
1906 #ifdef DIAGNOSTIC
1907 		panic("eso_set_gain: bad port %u", port);
1908 		/* NOTREACHED */
1909 #else
1910 		return;
1911 #endif
1912 		}
1913 
1914 	eso_write_mixreg(sc, mixreg, ESO_4BIT_GAIN_TO_STEREO(
1915 	    sc->sc_gain[port][ESO_LEFT], sc->sc_gain[port][ESO_RIGHT]));
1916 }
1917 
1918 
1919 HIDE void
1920 eso_powerhook(why, self)
1921 	int why;
1922 	void *self;
1923 {
1924 	struct eso_softc *sc = (struct eso_softc *)self;
1925 
1926 	if (why != PWR_RESUME) {
1927 		eso_halt_output(sc);
1928 		eso_halt_input(sc);
1929 
1930 		bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAM, 0);
1931 		bus_space_write_1(sc->sc_dmac_iot,
1932 				  sc->sc_dmac_ioh, ESO_DMAC_CLEAR, 0);
1933 		bus_space_write_1(sc->sc_sb_iot,
1934 				  sc->sc_sb_ioh, ESO_SB_STATUSFLAGS, 3);
1935 
1936 		/* shut down dma */
1937 		pci_conf_write(sc->sc_pa.pa_pc,
1938 			       sc->sc_pa.pa_tag, ESO_PCI_DDMAC, 0);
1939 	} else
1940 		eso_setup(sc, 0);
1941 }
1942