xref: /netbsd-src/sys/dev/pci/eso.c (revision aaf4ece63a859a04e37cf3a7229b5fab0157cc06)
1 /*	$NetBSD: eso.c,v 1.41 2005/12/11 12:22:49 christos Exp $	*/
2 
3 /*
4  * Copyright (c) 1999, 2000, 2004 Klaus J. Klein
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. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. The name of the author may not be used to endorse or promote products
16  *    derived from this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
23  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
26  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28  * SUCH DAMAGE.
29  */
30 
31 /*
32  * ESS Technology Inc. Solo-1 PCI AudioDrive (ES1938/1946) device driver.
33  */
34 
35 #include <sys/cdefs.h>
36 __KERNEL_RCSID(0, "$NetBSD: eso.c,v 1.41 2005/12/11 12:22:49 christos Exp $");
37 
38 #include "mpu.h"
39 
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/kernel.h>
43 #include <sys/malloc.h>
44 #include <sys/device.h>
45 #include <sys/proc.h>
46 
47 #include <dev/pci/pcidevs.h>
48 #include <dev/pci/pcivar.h>
49 
50 #include <sys/audioio.h>
51 #include <dev/audio_if.h>
52 #include <dev/midi_if.h>
53 
54 #include <dev/mulaw.h>
55 #include <dev/auconv.h>
56 
57 #include <dev/ic/mpuvar.h>
58 #include <dev/ic/i8237reg.h>
59 #include <dev/pci/esoreg.h>
60 #include <dev/pci/esovar.h>
61 
62 #include <machine/bus.h>
63 #include <machine/intr.h>
64 
65 /*
66  * XXX Work around the 24-bit implementation limit of the Audio 1 DMA
67  * XXX engine by allocating through the ISA DMA tag.
68  */
69 #if defined(amd64) || defined(i386)
70 #include "isa.h"
71 #if NISA > 0
72 #include <dev/isa/isavar.h>
73 #endif
74 #endif
75 
76 #if defined(AUDIO_DEBUG) || defined(DEBUG)
77 #define DPRINTF(x) printf x
78 #else
79 #define DPRINTF(x)
80 #endif
81 
82 struct eso_dma {
83 	bus_dma_tag_t		ed_dmat;
84 	bus_dmamap_t		ed_map;
85 	caddr_t			ed_addr;
86 	bus_dma_segment_t	ed_segs[1];
87 	int			ed_nsegs;
88 	size_t			ed_size;
89 	struct eso_dma *	ed_next;
90 };
91 
92 #define KVADDR(dma)	((void *)(dma)->ed_addr)
93 #define DMAADDR(dma)	((dma)->ed_map->dm_segs[0].ds_addr)
94 
95 /* Autoconfiguration interface */
96 static int eso_match(struct device *, struct cfdata *, void *);
97 static void eso_attach(struct device *, struct device *, void *);
98 static void eso_defer(struct device *);
99 static int eso_print(void *, const char *);
100 
101 CFATTACH_DECL(eso, sizeof (struct eso_softc),
102     eso_match, eso_attach, NULL, NULL);
103 
104 /* PCI interface */
105 static int eso_intr(void *);
106 
107 /* MI audio layer interface */
108 static int	eso_query_encoding(void *, struct audio_encoding *);
109 static int	eso_set_params(void *, int, int, audio_params_t *,
110 		    audio_params_t *, stream_filter_list_t *,
111 		    stream_filter_list_t *);
112 static int	eso_round_blocksize(void *, int, int, const audio_params_t *);
113 static int	eso_halt_output(void *);
114 static int	eso_halt_input(void *);
115 static int	eso_getdev(void *, struct audio_device *);
116 static int	eso_set_port(void *, mixer_ctrl_t *);
117 static int	eso_get_port(void *, mixer_ctrl_t *);
118 static int	eso_query_devinfo(void *, mixer_devinfo_t *);
119 static void *	eso_allocm(void *, int, size_t, struct malloc_type *, int);
120 static void	eso_freem(void *, void *, struct malloc_type *);
121 static size_t	eso_round_buffersize(void *, int, size_t);
122 static paddr_t	eso_mappage(void *, void *, off_t, int);
123 static int	eso_get_props(void *);
124 static int	eso_trigger_output(void *, void *, void *, int,
125 		    void (*)(void *), void *, const audio_params_t *);
126 static int	eso_trigger_input(void *, void *, void *, int,
127 		    void (*)(void *), void *, const audio_params_t *);
128 
129 static const struct audio_hw_if eso_hw_if = {
130 	NULL,			/* open */
131 	NULL,			/* close */
132 	NULL,			/* drain */
133 	eso_query_encoding,
134 	eso_set_params,
135 	eso_round_blocksize,
136 	NULL,			/* commit_settings */
137 	NULL,			/* init_output */
138 	NULL,			/* init_input */
139 	NULL,			/* start_output */
140 	NULL,			/* start_input */
141 	eso_halt_output,
142 	eso_halt_input,
143 	NULL,			/* speaker_ctl */
144 	eso_getdev,
145 	NULL,			/* setfd */
146 	eso_set_port,
147 	eso_get_port,
148 	eso_query_devinfo,
149 	eso_allocm,
150 	eso_freem,
151 	eso_round_buffersize,
152 	eso_mappage,
153 	eso_get_props,
154 	eso_trigger_output,
155 	eso_trigger_input,
156 	NULL,			/* dev_ioctl */
157 };
158 
159 static const char * const eso_rev2model[] = {
160 	"ES1938",
161 	"ES1946",
162 	"ES1946 Revision E"
163 };
164 
165 #define ESO_NFORMATS	8
166 static const struct audio_format eso_formats[ESO_NFORMATS] = {
167 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
168 	 2, AUFMT_STEREO, 0, {ESO_MINRATE, ESO_MAXRATE}},
169 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
170 	 1, AUFMT_MONAURAL, 0, {ESO_MINRATE, ESO_MAXRATE}},
171 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 16, 16,
172 	 2, AUFMT_STEREO, 0, {ESO_MINRATE, ESO_MAXRATE}},
173 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 16, 16,
174 	 1, AUFMT_MONAURAL, 0, {ESO_MINRATE, ESO_MAXRATE}},
175 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 8, 8,
176 	 2, AUFMT_STEREO, 0, {ESO_MINRATE, ESO_MAXRATE}},
177 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 8, 8,
178 	 1, AUFMT_MONAURAL, 0, {ESO_MINRATE, ESO_MAXRATE}},
179 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 8, 8,
180 	 2, AUFMT_STEREO, 0, {ESO_MINRATE, ESO_MAXRATE}},
181 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 8, 8,
182 	 1, AUFMT_MONAURAL, 0, {ESO_MINRATE, ESO_MAXRATE}}
183 };
184 
185 
186 /*
187  * Utility routines
188  */
189 /* Register access etc. */
190 static uint8_t	eso_read_ctlreg(struct eso_softc *, uint8_t);
191 static uint8_t	eso_read_mixreg(struct eso_softc *, uint8_t);
192 static uint8_t	eso_read_rdr(struct eso_softc *);
193 static void	eso_reload_master_vol(struct eso_softc *);
194 static int	eso_reset(struct eso_softc *);
195 static void	eso_set_gain(struct eso_softc *, unsigned int);
196 static int	eso_set_recsrc(struct eso_softc *, unsigned int);
197 static int	eso_set_monooutsrc(struct eso_softc *, unsigned int);
198 static int	eso_set_monoinbypass(struct eso_softc *, unsigned int);
199 static int	eso_set_preamp(struct eso_softc *, unsigned int);
200 static void	eso_write_cmd(struct eso_softc *, uint8_t);
201 static void	eso_write_ctlreg(struct eso_softc *, uint8_t, uint8_t);
202 static void	eso_write_mixreg(struct eso_softc *, uint8_t, uint8_t);
203 /* DMA memory allocation */
204 static int	eso_allocmem(struct eso_softc *, size_t, size_t, size_t,
205 		    int, int, struct eso_dma *);
206 static void	eso_freemem(struct eso_dma *);
207 
208 
209 static int
210 eso_match(struct device *parent, struct cfdata *match, void *aux)
211 {
212 	struct pci_attach_args *pa;
213 
214 	pa = aux;
215 	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ESSTECH &&
216 	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ESSTECH_SOLO1)
217 		return 1;
218 
219 	return 0;
220 }
221 
222 static void
223 eso_attach(struct device *parent, struct device *self, void *aux)
224 {
225 	struct eso_softc *sc;
226 	struct pci_attach_args *pa;
227 	struct audio_attach_args aa;
228 	pci_intr_handle_t ih;
229 	bus_addr_t vcbase;
230 	const char *intrstring;
231 	int idx;
232 	uint8_t a2mode, mvctl;
233 
234 	sc = (struct eso_softc *)self;
235 	pa = aux;
236 	aprint_naive(": Audio controller\n");
237 
238 	sc->sc_revision = PCI_REVISION(pa->pa_class);
239 
240 	aprint_normal(": ESS Solo-1 PCI AudioDrive ");
241 	if (sc->sc_revision <
242 	    sizeof (eso_rev2model) / sizeof (eso_rev2model[0]))
243 		aprint_normal("%s\n", eso_rev2model[sc->sc_revision]);
244 	else
245 		aprint_normal("(unknown rev. 0x%02x)\n", sc->sc_revision);
246 
247 	/* Map I/O registers. */
248 	if (pci_mapreg_map(pa, ESO_PCI_BAR_IO, PCI_MAPREG_TYPE_IO, 0,
249 	    &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) {
250 		aprint_error("%s: can't map I/O space\n", sc->sc_dev.dv_xname);
251 		return;
252 	}
253 	if (pci_mapreg_map(pa, ESO_PCI_BAR_SB, PCI_MAPREG_TYPE_IO, 0,
254 	    &sc->sc_sb_iot, &sc->sc_sb_ioh, NULL, NULL)) {
255 		aprint_error("%s: can't map SB I/O space\n",
256 		    sc->sc_dev.dv_xname);
257 		return;
258 	}
259 	if (pci_mapreg_map(pa, ESO_PCI_BAR_VC, PCI_MAPREG_TYPE_IO, 0,
260 	    &sc->sc_dmac_iot, &sc->sc_dmac_ioh, &vcbase, &sc->sc_vcsize)) {
261 		aprint_error("%s: can't map VC I/O space\n",
262 		    sc->sc_dev.dv_xname);
263 		/* Don't bail out yet: we can map it later, see below. */
264 		vcbase = 0;
265 		sc->sc_vcsize = 0x10; /* From the data sheet. */
266 	}
267 	if (pci_mapreg_map(pa, ESO_PCI_BAR_MPU, PCI_MAPREG_TYPE_IO, 0,
268 	    &sc->sc_mpu_iot, &sc->sc_mpu_ioh, NULL, NULL)) {
269 		aprint_error("%s: can't map MPU I/O space\n",
270 		    sc->sc_dev.dv_xname);
271 		return;
272 	}
273 	if (pci_mapreg_map(pa, ESO_PCI_BAR_GAME, PCI_MAPREG_TYPE_IO, 0,
274 	    &sc->sc_game_iot, &sc->sc_game_ioh, NULL, NULL)) {
275 		aprint_error("%s: can't map Game I/O space\n",
276 		    sc->sc_dev.dv_xname);
277 		return;
278 	}
279 
280 	sc->sc_dmat = pa->pa_dmat;
281 	sc->sc_dmas = NULL;
282 	sc->sc_dmac_configured = 0;
283 
284 	/* Enable bus mastering. */
285 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
286 	    pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) |
287 	    PCI_COMMAND_MASTER_ENABLE);
288 
289 	/* Reset the device; bail out upon failure. */
290 	if (eso_reset(sc) != 0) {
291 		aprint_error("%s: can't reset\n", sc->sc_dev.dv_xname);
292 		return;
293 	}
294 
295 	/* Select the DMA/IRQ policy: DDMA, ISA IRQ emulation disabled. */
296 	pci_conf_write(pa->pa_pc, pa->pa_tag, ESO_PCI_S1C,
297 	    pci_conf_read(pa->pa_pc, pa->pa_tag, ESO_PCI_S1C) &
298 	    ~(ESO_PCI_S1C_IRQP_MASK | ESO_PCI_S1C_DMAP_MASK));
299 
300 	/* Enable the relevant (DMA) interrupts. */
301 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_IRQCTL,
302 	    ESO_IO_IRQCTL_A1IRQ | ESO_IO_IRQCTL_A2IRQ | ESO_IO_IRQCTL_HVIRQ |
303 	    ESO_IO_IRQCTL_MPUIRQ);
304 
305 	/* Set up A1's sample rate generator for new-style parameters. */
306 	a2mode = eso_read_mixreg(sc, ESO_MIXREG_A2MODE);
307 	a2mode |= ESO_MIXREG_A2MODE_NEWA1 | ESO_MIXREG_A2MODE_ASYNC;
308 	eso_write_mixreg(sc, ESO_MIXREG_A2MODE, a2mode);
309 
310 	/* Slave Master Volume to Hardware Volume Control Counter, unmask IRQ.*/
311 	mvctl = eso_read_mixreg(sc, ESO_MIXREG_MVCTL);
312 	mvctl &= ~ESO_MIXREG_MVCTL_SPLIT;
313 	mvctl |= ESO_MIXREG_MVCTL_HVIRQM;
314 	eso_write_mixreg(sc, ESO_MIXREG_MVCTL, mvctl);
315 
316 	/* Set mixer regs to something reasonable, needs work. */
317 	sc->sc_recmon = sc->sc_spatializer = sc->sc_mvmute = 0;
318 	eso_set_monooutsrc(sc, ESO_MIXREG_MPM_MOMUTE);
319 	eso_set_monoinbypass(sc, 0);
320 	eso_set_preamp(sc, 1);
321 	for (idx = 0; idx < ESO_NGAINDEVS; idx++) {
322 		int v;
323 
324 		switch (idx) {
325 		case ESO_MIC_PLAY_VOL:
326 		case ESO_LINE_PLAY_VOL:
327 		case ESO_CD_PLAY_VOL:
328 		case ESO_MONO_PLAY_VOL:
329 		case ESO_AUXB_PLAY_VOL:
330 		case ESO_DAC_REC_VOL:
331 		case ESO_LINE_REC_VOL:
332 		case ESO_SYNTH_REC_VOL:
333 		case ESO_CD_REC_VOL:
334 		case ESO_MONO_REC_VOL:
335 		case ESO_AUXB_REC_VOL:
336 		case ESO_SPATIALIZER:
337 			v = 0;
338 			break;
339 		case ESO_MASTER_VOL:
340 			v = ESO_GAIN_TO_6BIT(AUDIO_MAX_GAIN / 2);
341 			break;
342 		default:
343 			v = ESO_GAIN_TO_4BIT(AUDIO_MAX_GAIN / 2);
344 			break;
345 		}
346 		sc->sc_gain[idx][ESO_LEFT] = sc->sc_gain[idx][ESO_RIGHT] = v;
347 		eso_set_gain(sc, idx);
348 	}
349 	eso_set_recsrc(sc, ESO_MIXREG_ERS_MIC);
350 
351 	/* Map and establish the interrupt. */
352 	if (pci_intr_map(pa, &ih)) {
353 		aprint_error("%s: couldn't map interrupt\n",
354 		    sc->sc_dev.dv_xname);
355 		return;
356 	}
357 	intrstring = pci_intr_string(pa->pa_pc, ih);
358 	sc->sc_ih  = pci_intr_establish(pa->pa_pc, ih, IPL_AUDIO, eso_intr, sc);
359 	if (sc->sc_ih == NULL) {
360 		aprint_error("%s: couldn't establish interrupt",
361 		    sc->sc_dev.dv_xname);
362 		if (intrstring != NULL)
363 			aprint_normal(" at %s", intrstring);
364 		aprint_normal("\n");
365 		return;
366 	}
367 	aprint_normal("%s: interrupting at %s\n", sc->sc_dev.dv_xname,
368 	    intrstring);
369 
370 	/*
371 	 * Set up the DDMA Control register; a suitable I/O region has been
372 	 * supposedly mapped in the VC base address register.
373 	 *
374 	 * The Solo-1 has an ... interesting silicon bug that causes it to
375 	 * not respond to I/O space accesses to the Audio 1 DMA controller
376 	 * if the latter's mapping base address is aligned on a 1K boundary.
377 	 * As a consequence, it is quite possible for the mapping provided
378 	 * in the VC BAR to be useless.  To work around this, we defer this
379 	 * part until all autoconfiguration on our parent bus is completed
380 	 * and then try to map it ourselves in fulfillment of the constraint.
381 	 *
382 	 * According to the register map we may write to the low 16 bits
383 	 * only, but experimenting has shown we're safe.
384 	 * -kjk
385 	 */
386 	if (ESO_VALID_DDMAC_BASE(vcbase)) {
387 		pci_conf_write(pa->pa_pc, pa->pa_tag, ESO_PCI_DDMAC,
388 		    vcbase | ESO_PCI_DDMAC_DE);
389 		sc->sc_dmac_configured = 1;
390 
391 		aprint_normal(
392 		    "%s: mapping Audio 1 DMA using VC I/O space at 0x%lx\n",
393 		    sc->sc_dev.dv_xname, (unsigned long)vcbase);
394 	} else {
395 		DPRINTF(("%s: VC I/O space at 0x%lx not suitable, deferring\n",
396 		    sc->sc_dev.dv_xname, (unsigned long)vcbase));
397 		sc->sc_pa = *pa;
398 		config_defer(self, eso_defer);
399 	}
400 
401 	audio_attach_mi(&eso_hw_if, sc, &sc->sc_dev);
402 
403 	aa.type = AUDIODEV_TYPE_OPL;
404 	aa.hwif = NULL;
405 	aa.hdl = NULL;
406 	(void)config_found(&sc->sc_dev, &aa, audioprint);
407 
408 	aa.type = AUDIODEV_TYPE_MPU;
409 	aa.hwif = NULL;
410 	aa.hdl = NULL;
411 	sc->sc_mpudev = config_found(&sc->sc_dev, &aa, audioprint);
412 	if (sc->sc_mpudev != NULL) {
413 		/* Unmask the MPU irq. */
414 		mvctl = eso_read_mixreg(sc, ESO_MIXREG_MVCTL);
415 		mvctl |= ESO_MIXREG_MVCTL_MPUIRQM;
416 		eso_write_mixreg(sc, ESO_MIXREG_MVCTL, mvctl);
417 	}
418 
419 	aa.type = AUDIODEV_TYPE_AUX;
420 	aa.hwif = NULL;
421 	aa.hdl = NULL;
422 	(void)config_found(&sc->sc_dev, &aa, eso_print);
423 }
424 
425 static void
426 eso_defer(struct device *self)
427 {
428 	struct eso_softc *sc;
429 	struct pci_attach_args *pa;
430 	bus_addr_t addr, start;
431 
432 	sc = (struct eso_softc *)self;
433 	pa = &sc->sc_pa;
434 	aprint_normal("%s: ", sc->sc_dev.dv_xname);
435 
436 	/*
437 	 * This is outright ugly, but since we must not make assumptions
438 	 * on the underlying allocator's behaviour it's the most straight-
439 	 * forward way to implement it.  Note that we skip over the first
440 	 * 1K region, which is typically occupied by an attached ISA bus.
441 	 */
442 	for (start = 0x0400; start < 0xffff; start += 0x0400) {
443 		if (bus_space_alloc(sc->sc_iot,
444 		    start + sc->sc_vcsize, start + 0x0400 - 1,
445 		    sc->sc_vcsize, sc->sc_vcsize, 0, 0, &addr,
446 		    &sc->sc_dmac_ioh) != 0)
447 			continue;
448 
449 		pci_conf_write(pa->pa_pc, pa->pa_tag, ESO_PCI_DDMAC,
450 		    addr | ESO_PCI_DDMAC_DE);
451 		sc->sc_dmac_iot = sc->sc_iot;
452 		sc->sc_dmac_configured = 1;
453 		aprint_normal("mapping Audio 1 DMA using I/O space at 0x%lx\n",
454 		    (unsigned long)addr);
455 
456 		return;
457 	}
458 
459 	aprint_error("can't map Audio 1 DMA into I/O space\n");
460 }
461 
462 /* ARGSUSED */
463 static int
464 eso_print(void *aux, const char *pnp)
465 {
466 
467 	/* Only joys can attach via this; easy. */
468 	if (pnp)
469 		aprint_normal("joy at %s:", pnp);
470 
471 	return UNCONF;
472 }
473 
474 static void
475 eso_write_cmd(struct eso_softc *sc, uint8_t cmd)
476 {
477 	int i;
478 
479 	/* Poll for busy indicator to become clear. */
480 	for (i = 0; i < ESO_WDR_TIMEOUT; i++) {
481 		if ((bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_RSR)
482 		    & ESO_SB_RSR_BUSY) == 0) {
483 			bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh,
484 			    ESO_SB_WDR, cmd);
485 			return;
486 		} else {
487 			delay(10);
488 		}
489 	}
490 
491 	printf("%s: WDR timeout\n", sc->sc_dev.dv_xname);
492 	return;
493 }
494 
495 /* Write to a controller register */
496 static void
497 eso_write_ctlreg(struct eso_softc *sc, uint8_t reg, uint8_t val)
498 {
499 
500 	/* DPRINTF(("ctlreg 0x%02x = 0x%02x\n", reg, val)); */
501 
502 	eso_write_cmd(sc, reg);
503 	eso_write_cmd(sc, val);
504 }
505 
506 /* Read out the Read Data Register */
507 static uint8_t
508 eso_read_rdr(struct eso_softc *sc)
509 {
510 	int i;
511 
512 	for (i = 0; i < ESO_RDR_TIMEOUT; i++) {
513 		if (bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh,
514 		    ESO_SB_RBSR) & ESO_SB_RBSR_RDAV) {
515 			return (bus_space_read_1(sc->sc_sb_iot,
516 			    sc->sc_sb_ioh, ESO_SB_RDR));
517 		} else {
518 			delay(10);
519 		}
520 	}
521 
522 	printf("%s: RDR timeout\n", sc->sc_dev.dv_xname);
523 	return (-1);
524 }
525 
526 static uint8_t
527 eso_read_ctlreg(struct eso_softc *sc, uint8_t reg)
528 {
529 
530 	eso_write_cmd(sc, ESO_CMD_RCR);
531 	eso_write_cmd(sc, reg);
532 	return eso_read_rdr(sc);
533 }
534 
535 static void
536 eso_write_mixreg(struct eso_softc *sc, uint8_t reg, uint8_t val)
537 {
538 	int s;
539 
540 	/* DPRINTF(("mixreg 0x%02x = 0x%02x\n", reg, val)); */
541 
542 	s = splaudio();
543 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_MIXERADDR, reg);
544 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_MIXERDATA, val);
545 	splx(s);
546 }
547 
548 static uint8_t
549 eso_read_mixreg(struct eso_softc *sc, uint8_t reg)
550 {
551 	int s;
552 	uint8_t val;
553 
554 	s = splaudio();
555 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_MIXERADDR, reg);
556 	val = bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_MIXERDATA);
557 	splx(s);
558 
559 	return val;
560 }
561 
562 static int
563 eso_intr(void *hdl)
564 {
565 	struct eso_softc *sc;
566 	uint8_t irqctl;
567 
568 	sc = hdl;
569 	irqctl = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ESO_IO_IRQCTL);
570 
571 	/* If it wasn't ours, that's all she wrote. */
572 	if ((irqctl & (ESO_IO_IRQCTL_A1IRQ | ESO_IO_IRQCTL_A2IRQ |
573 	    ESO_IO_IRQCTL_HVIRQ | ESO_IO_IRQCTL_MPUIRQ)) == 0)
574 		return 0;
575 
576 	if (irqctl & ESO_IO_IRQCTL_A1IRQ) {
577 		/* Clear interrupt. */
578 		(void)bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh,
579 		    ESO_SB_RBSR);
580 
581 		if (sc->sc_rintr)
582 			sc->sc_rintr(sc->sc_rarg);
583 		else
584 			wakeup(&sc->sc_rintr);
585 	}
586 
587 	if (irqctl & ESO_IO_IRQCTL_A2IRQ) {
588 		/*
589 		 * Clear the A2 IRQ latch: the cached value reflects the
590 		 * current DAC settings with the IRQ latch bit not set.
591 		 */
592 		eso_write_mixreg(sc, ESO_MIXREG_A2C2, sc->sc_a2c2);
593 
594 		if (sc->sc_pintr)
595 			sc->sc_pintr(sc->sc_parg);
596 		else
597 			wakeup(&sc->sc_pintr);
598 	}
599 
600 	if (irqctl & ESO_IO_IRQCTL_HVIRQ) {
601 		/* Clear interrupt. */
602 		eso_write_mixreg(sc, ESO_MIXREG_CHVIR, ESO_MIXREG_CHVIR_CHVIR);
603 
604 		/*
605 		 * Raise a flag to cause a lazy update of the in-softc gain
606 		 * values the next time the software mixer is read to keep
607 		 * interrupt service cost low.  ~0 cannot occur otherwise
608 		 * as the master volume has a precision of 6 bits only.
609 		 */
610 		sc->sc_gain[ESO_MASTER_VOL][ESO_LEFT] = (uint8_t)~0;
611 	}
612 
613 #if NMPU > 0
614 	if ((irqctl & ESO_IO_IRQCTL_MPUIRQ) && sc->sc_mpudev != NULL)
615 		mpu_intr(sc->sc_mpudev);
616 #endif
617 
618 	return 1;
619 }
620 
621 /* Perform a software reset, including DMA FIFOs. */
622 static int
623 eso_reset(struct eso_softc *sc)
624 {
625 	int i;
626 
627 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_RESET,
628 	    ESO_SB_RESET_SW | ESO_SB_RESET_FIFO);
629 	/* `Delay' suggested in the data sheet. */
630 	(void)bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_STATUS);
631 	bus_space_write_1(sc->sc_sb_iot, sc->sc_sb_ioh, ESO_SB_RESET, 0);
632 
633 	/* Wait for reset to take effect. */
634 	for (i = 0; i < ESO_RESET_TIMEOUT; i++) {
635 		/* Poll for data to become available. */
636 		if ((bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh,
637 		    ESO_SB_RBSR) & ESO_SB_RBSR_RDAV) != 0 &&
638 		    bus_space_read_1(sc->sc_sb_iot, sc->sc_sb_ioh,
639 			ESO_SB_RDR) == ESO_SB_RDR_RESETMAGIC) {
640 
641 			/* Activate Solo-1 extension commands. */
642 			eso_write_cmd(sc, ESO_CMD_EXTENB);
643 			/* Reset mixer registers. */
644 			eso_write_mixreg(sc, ESO_MIXREG_RESET,
645 			    ESO_MIXREG_RESET_RESET);
646 
647 			return 0;
648 		} else {
649 			delay(1000);
650 		}
651 	}
652 
653 	printf("%s: reset timeout\n", sc->sc_dev.dv_xname);
654 	return -1;
655 }
656 
657 static int
658 eso_query_encoding(void *hdl, struct audio_encoding *fp)
659 {
660 
661 	switch (fp->index) {
662 	case 0:
663 		strcpy(fp->name, AudioEulinear);
664 		fp->encoding = AUDIO_ENCODING_ULINEAR;
665 		fp->precision = 8;
666 		fp->flags = 0;
667 		break;
668 	case 1:
669 		strcpy(fp->name, AudioEmulaw);
670 		fp->encoding = AUDIO_ENCODING_ULAW;
671 		fp->precision = 8;
672 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
673 		break;
674 	case 2:
675 		strcpy(fp->name, AudioEalaw);
676 		fp->encoding = AUDIO_ENCODING_ALAW;
677 		fp->precision = 8;
678 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
679 		break;
680 	case 3:
681 		strcpy(fp->name, AudioEslinear);
682 		fp->encoding = AUDIO_ENCODING_SLINEAR;
683 		fp->precision = 8;
684 		fp->flags = 0;
685 		break;
686 	case 4:
687 		strcpy(fp->name, AudioEslinear_le);
688 		fp->encoding = AUDIO_ENCODING_SLINEAR_LE;
689 		fp->precision = 16;
690 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
691 		break;
692 	case 5:
693 		strcpy(fp->name, AudioEulinear_le);
694 		fp->encoding = AUDIO_ENCODING_ULINEAR_LE;
695 		fp->precision = 16;
696 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
697 		break;
698 	case 6:
699 		strcpy(fp->name, AudioEslinear_be);
700 		fp->encoding = AUDIO_ENCODING_SLINEAR_BE;
701 		fp->precision = 16;
702 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
703 		break;
704 	case 7:
705 		strcpy(fp->name, AudioEulinear_be);
706 		fp->encoding = AUDIO_ENCODING_ULINEAR_BE;
707 		fp->precision = 16;
708 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
709 		break;
710 	default:
711 		return EINVAL;
712 	}
713 
714 	return 0;
715 }
716 
717 static int
718 eso_set_params(void *hdl, int setmode, int usemode, audio_params_t *play,
719     audio_params_t *rec, stream_filter_list_t *pfil, stream_filter_list_t *rfil)
720 {
721 	struct eso_softc *sc;
722 	struct audio_params *p;
723 	stream_filter_list_t *fil;
724 	int mode, r[2], rd[2], clk;
725 	unsigned int srg, fltdiv;
726 	int i;
727 
728 	sc = hdl;
729 	for (mode = AUMODE_RECORD; mode != -1;
730 	     mode = mode == AUMODE_RECORD ? AUMODE_PLAY : -1) {
731 		if ((setmode & mode) == 0)
732 			continue;
733 
734 		p = (mode == AUMODE_PLAY) ? play : rec;
735 
736 		if (p->sample_rate < ESO_MINRATE ||
737 		    p->sample_rate > ESO_MAXRATE ||
738 		    (p->precision != 8 && p->precision != 16) ||
739 		    (p->channels != 1 && p->channels != 2))
740 			return EINVAL;
741 
742 		/*
743 		 * We'll compute both possible sample rate dividers and pick
744 		 * the one with the least error.
745 		 */
746 #define ABS(x) ((x) < 0 ? -(x) : (x))
747 		r[0] = ESO_CLK0 /
748 		    (128 - (rd[0] = 128 - ESO_CLK0 / p->sample_rate));
749 		r[1] = ESO_CLK1 /
750 		    (128 - (rd[1] = 128 - ESO_CLK1 / p->sample_rate));
751 
752 		clk = ABS(p->sample_rate - r[0]) > ABS(p->sample_rate - r[1]);
753 		srg = rd[clk] | (clk == 1 ? ESO_CLK1_SELECT : 0x00);
754 
755 		/* Roll-off frequency of 87%, as in the ES1888 driver. */
756 		fltdiv = 256 - 200279L / r[clk];
757 
758 		/* Update to reflect the possibly inexact rate. */
759 		p->sample_rate = r[clk];
760 
761 		fil = (mode == AUMODE_PLAY) ? pfil : rfil;
762 		i = auconv_set_converter(eso_formats, ESO_NFORMATS,
763 					 mode, p, FALSE, fil);
764 		if (i < 0)
765 			return EINVAL;
766 		if (mode == AUMODE_RECORD) {
767 			/* Audio 1 */
768 			DPRINTF(("A1 srg 0x%02x fdiv 0x%02x\n", srg, fltdiv));
769 			eso_write_ctlreg(sc, ESO_CTLREG_SRG, srg);
770 			eso_write_ctlreg(sc, ESO_CTLREG_FLTDIV, fltdiv);
771 		} else {
772 			/* Audio 2 */
773 			DPRINTF(("A2 srg 0x%02x fdiv 0x%02x\n", srg, fltdiv));
774 			eso_write_mixreg(sc, ESO_MIXREG_A2SRG, srg);
775 			eso_write_mixreg(sc, ESO_MIXREG_A2FLTDIV, fltdiv);
776 		}
777 #undef ABS
778 
779 	}
780 
781 	return 0;
782 }
783 
784 static int
785 eso_round_blocksize(void *hdl, int blk, int mode, const audio_params_t *param)
786 {
787 
788 	return blk & -32;	/* keep good alignment; at least 16 req'd */
789 }
790 
791 static int
792 eso_halt_output(void *hdl)
793 {
794 	struct eso_softc *sc;
795 	int error, s;
796 
797 	sc = hdl;
798 	DPRINTF(("%s: halt_output\n", sc->sc_dev.dv_xname));
799 
800 	/*
801 	 * Disable auto-initialize DMA, allowing the FIFO to drain and then
802 	 * stop.  The interrupt callback pointer is cleared at this
803 	 * point so that an outstanding FIFO interrupt for the remaining data
804 	 * will be acknowledged without further processing.
805 	 *
806 	 * This does not immediately `abort' an operation in progress (c.f.
807 	 * audio(9)) but is the method to leave the FIFO behind in a clean
808 	 * state with the least hair.  (Besides, that item needs to be
809 	 * rephrased for trigger_*()-based DMA environments.)
810 	 */
811 	s = splaudio();
812 	eso_write_mixreg(sc, ESO_MIXREG_A2C1,
813 	    ESO_MIXREG_A2C1_FIFOENB | ESO_MIXREG_A2C1_DMAENB);
814 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAM,
815 	    ESO_IO_A2DMAM_DMAENB);
816 
817 	sc->sc_pintr = NULL;
818 	error = tsleep(&sc->sc_pintr, PCATCH | PWAIT, "esoho", sc->sc_pdrain);
819 	splx(s);
820 
821 	/* Shut down DMA completely. */
822 	eso_write_mixreg(sc, ESO_MIXREG_A2C1, 0);
823 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAM, 0);
824 
825 	return error == EWOULDBLOCK ? 0 : error;
826 }
827 
828 static int
829 eso_halt_input(void *hdl)
830 {
831 	struct eso_softc *sc;
832 	int error, s;
833 
834 	sc = hdl;
835 	DPRINTF(("%s: halt_input\n", sc->sc_dev.dv_xname));
836 
837 	/* Just like eso_halt_output(), but for Audio 1. */
838 	s = splaudio();
839 	eso_write_ctlreg(sc, ESO_CTLREG_A1C2,
840 	    ESO_CTLREG_A1C2_READ | ESO_CTLREG_A1C2_ADC |
841 	    ESO_CTLREG_A1C2_DMAENB);
842 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MODE,
843 	    DMA37MD_WRITE | DMA37MD_DEMAND);
844 
845 	sc->sc_rintr = NULL;
846 	error = tsleep(&sc->sc_rintr, PCATCH | PWAIT, "esohi", sc->sc_rdrain);
847 	splx(s);
848 
849 	/* Shut down DMA completely. */
850 	eso_write_ctlreg(sc, ESO_CTLREG_A1C2,
851 	    ESO_CTLREG_A1C2_READ | ESO_CTLREG_A1C2_ADC);
852 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MASK,
853 	    ESO_DMAC_MASK_MASK);
854 
855 	return error == EWOULDBLOCK ? 0 : error;
856 }
857 
858 static int
859 eso_getdev(void *hdl, struct audio_device *retp)
860 {
861 	struct eso_softc *sc;
862 
863 	sc = hdl;
864 	strncpy(retp->name, "ESS Solo-1", sizeof (retp->name));
865 	snprintf(retp->version, sizeof (retp->version), "0x%02x",
866 	    sc->sc_revision);
867 	if (sc->sc_revision <
868 	    sizeof (eso_rev2model) / sizeof (eso_rev2model[0]))
869 		strncpy(retp->config, eso_rev2model[sc->sc_revision],
870 		    sizeof (retp->config));
871 	else
872 		strncpy(retp->config, "unknown", sizeof (retp->config));
873 
874 	return 0;
875 }
876 
877 static int
878 eso_set_port(void *hdl, mixer_ctrl_t *cp)
879 {
880 	struct eso_softc *sc;
881 	unsigned int lgain, rgain;
882 	uint8_t tmp;
883 
884 	sc = hdl;
885 	switch (cp->dev) {
886 	case ESO_DAC_PLAY_VOL:
887 	case ESO_MIC_PLAY_VOL:
888 	case ESO_LINE_PLAY_VOL:
889 	case ESO_SYNTH_PLAY_VOL:
890 	case ESO_CD_PLAY_VOL:
891 	case ESO_AUXB_PLAY_VOL:
892 	case ESO_RECORD_VOL:
893 	case ESO_DAC_REC_VOL:
894 	case ESO_MIC_REC_VOL:
895 	case ESO_LINE_REC_VOL:
896 	case ESO_SYNTH_REC_VOL:
897 	case ESO_CD_REC_VOL:
898 	case ESO_AUXB_REC_VOL:
899 		if (cp->type != AUDIO_MIXER_VALUE)
900 			return EINVAL;
901 
902 		/*
903 		 * Stereo-capable mixer ports: if we get a single-channel
904 		 * gain value passed in, then we duplicate it to both left
905 		 * and right channels.
906 		 */
907 		switch (cp->un.value.num_channels) {
908 		case 1:
909 			lgain = rgain = ESO_GAIN_TO_4BIT(
910 			    cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
911 			break;
912 		case 2:
913 			lgain = ESO_GAIN_TO_4BIT(
914 			    cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT]);
915 			rgain = ESO_GAIN_TO_4BIT(
916 			    cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT]);
917 			break;
918 		default:
919 			return EINVAL;
920 		}
921 
922 		sc->sc_gain[cp->dev][ESO_LEFT] = lgain;
923 		sc->sc_gain[cp->dev][ESO_RIGHT] = rgain;
924 		eso_set_gain(sc, cp->dev);
925 		break;
926 
927 	case ESO_MASTER_VOL:
928 		if (cp->type != AUDIO_MIXER_VALUE)
929 			return EINVAL;
930 
931 		/* Like above, but a precision of 6 bits. */
932 		switch (cp->un.value.num_channels) {
933 		case 1:
934 			lgain = rgain = ESO_GAIN_TO_6BIT(
935 			    cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
936 			break;
937 		case 2:
938 			lgain = ESO_GAIN_TO_6BIT(
939 			    cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT]);
940 			rgain = ESO_GAIN_TO_6BIT(
941 			    cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT]);
942 			break;
943 		default:
944 			return EINVAL;
945 		}
946 
947 		sc->sc_gain[cp->dev][ESO_LEFT] = lgain;
948 		sc->sc_gain[cp->dev][ESO_RIGHT] = rgain;
949 		eso_set_gain(sc, cp->dev);
950 		break;
951 
952 	case ESO_SPATIALIZER:
953 		if (cp->type != AUDIO_MIXER_VALUE ||
954 		    cp->un.value.num_channels != 1)
955 			return EINVAL;
956 
957 		sc->sc_gain[cp->dev][ESO_LEFT] =
958 		    sc->sc_gain[cp->dev][ESO_RIGHT] =
959 		    ESO_GAIN_TO_6BIT(
960 			cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
961 		eso_set_gain(sc, cp->dev);
962 		break;
963 
964 	case ESO_MONO_PLAY_VOL:
965 	case ESO_MONO_REC_VOL:
966 		if (cp->type != AUDIO_MIXER_VALUE ||
967 		    cp->un.value.num_channels != 1)
968 			return EINVAL;
969 
970 		sc->sc_gain[cp->dev][ESO_LEFT] =
971 		    sc->sc_gain[cp->dev][ESO_RIGHT] =
972 		    ESO_GAIN_TO_4BIT(
973 			cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
974 		eso_set_gain(sc, cp->dev);
975 		break;
976 
977 	case ESO_PCSPEAKER_VOL:
978 		if (cp->type != AUDIO_MIXER_VALUE ||
979 		    cp->un.value.num_channels != 1)
980 			return EINVAL;
981 
982 		sc->sc_gain[cp->dev][ESO_LEFT] =
983 		    sc->sc_gain[cp->dev][ESO_RIGHT] =
984 		    ESO_GAIN_TO_3BIT(
985 			cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]);
986 		eso_set_gain(sc, cp->dev);
987 		break;
988 
989 	case ESO_SPATIALIZER_ENABLE:
990 		if (cp->type != AUDIO_MIXER_ENUM)
991 			return EINVAL;
992 
993 		sc->sc_spatializer = (cp->un.ord != 0);
994 
995 		tmp = eso_read_mixreg(sc, ESO_MIXREG_SPAT);
996 		if (sc->sc_spatializer)
997 			tmp |= ESO_MIXREG_SPAT_ENB;
998 		else
999 			tmp &= ~ESO_MIXREG_SPAT_ENB;
1000 		eso_write_mixreg(sc, ESO_MIXREG_SPAT,
1001 		    tmp | ESO_MIXREG_SPAT_RSTREL);
1002 		break;
1003 
1004 	case ESO_MASTER_MUTE:
1005 		if (cp->type != AUDIO_MIXER_ENUM)
1006 			return EINVAL;
1007 
1008 		sc->sc_mvmute = (cp->un.ord != 0);
1009 
1010 		if (sc->sc_mvmute) {
1011 			eso_write_mixreg(sc, ESO_MIXREG_LMVM,
1012 			    eso_read_mixreg(sc, ESO_MIXREG_LMVM) |
1013 			    ESO_MIXREG_LMVM_MUTE);
1014 			eso_write_mixreg(sc, ESO_MIXREG_RMVM,
1015 			    eso_read_mixreg(sc, ESO_MIXREG_RMVM) |
1016 			    ESO_MIXREG_RMVM_MUTE);
1017 		} else {
1018 			eso_write_mixreg(sc, ESO_MIXREG_LMVM,
1019 			    eso_read_mixreg(sc, ESO_MIXREG_LMVM) &
1020 			    ~ESO_MIXREG_LMVM_MUTE);
1021 			eso_write_mixreg(sc, ESO_MIXREG_RMVM,
1022 			    eso_read_mixreg(sc, ESO_MIXREG_RMVM) &
1023 			    ~ESO_MIXREG_RMVM_MUTE);
1024 		}
1025 		break;
1026 
1027 	case ESO_MONOOUT_SOURCE:
1028 		if (cp->type != AUDIO_MIXER_ENUM)
1029 			return EINVAL;
1030 
1031 		return eso_set_monooutsrc(sc, cp->un.ord);
1032 
1033 	case ESO_MONOIN_BYPASS:
1034 		if (cp->type != AUDIO_MIXER_ENUM)
1035 			return EINVAL;
1036 
1037 		return (eso_set_monoinbypass(sc, cp->un.ord));
1038 
1039 	case ESO_RECORD_MONITOR:
1040 		if (cp->type != AUDIO_MIXER_ENUM)
1041 			return EINVAL;
1042 
1043 		sc->sc_recmon = (cp->un.ord != 0);
1044 
1045 		tmp = eso_read_ctlreg(sc, ESO_CTLREG_ACTL);
1046 		if (sc->sc_recmon)
1047 			tmp |= ESO_CTLREG_ACTL_RECMON;
1048 		else
1049 			tmp &= ~ESO_CTLREG_ACTL_RECMON;
1050 		eso_write_ctlreg(sc, ESO_CTLREG_ACTL, tmp);
1051 		break;
1052 
1053 	case ESO_RECORD_SOURCE:
1054 		if (cp->type != AUDIO_MIXER_ENUM)
1055 			return EINVAL;
1056 
1057 		return eso_set_recsrc(sc, cp->un.ord);
1058 
1059 	case ESO_MIC_PREAMP:
1060 		if (cp->type != AUDIO_MIXER_ENUM)
1061 			return EINVAL;
1062 
1063 		return eso_set_preamp(sc, cp->un.ord);
1064 
1065 	default:
1066 		return EINVAL;
1067 	}
1068 
1069 	return 0;
1070 }
1071 
1072 static int
1073 eso_get_port(void *hdl, mixer_ctrl_t *cp)
1074 {
1075 	struct eso_softc *sc;
1076 
1077 	sc = hdl;
1078 	switch (cp->dev) {
1079 	case ESO_MASTER_VOL:
1080 		/* Reload from mixer after hardware volume control use. */
1081 		if (sc->sc_gain[cp->dev][ESO_LEFT] == (uint8_t)~0)
1082 			eso_reload_master_vol(sc);
1083 		/* FALLTHROUGH */
1084 	case ESO_DAC_PLAY_VOL:
1085 	case ESO_MIC_PLAY_VOL:
1086 	case ESO_LINE_PLAY_VOL:
1087 	case ESO_SYNTH_PLAY_VOL:
1088 	case ESO_CD_PLAY_VOL:
1089 	case ESO_AUXB_PLAY_VOL:
1090 	case ESO_RECORD_VOL:
1091 	case ESO_DAC_REC_VOL:
1092 	case ESO_MIC_REC_VOL:
1093 	case ESO_LINE_REC_VOL:
1094 	case ESO_SYNTH_REC_VOL:
1095 	case ESO_CD_REC_VOL:
1096 	case ESO_AUXB_REC_VOL:
1097 		/*
1098 		 * Stereo-capable ports: if a single-channel query is made,
1099 		 * just return the left channel's value (since single-channel
1100 		 * settings themselves are applied to both channels).
1101 		 */
1102 		switch (cp->un.value.num_channels) {
1103 		case 1:
1104 			cp->un.value.level[AUDIO_MIXER_LEVEL_MONO] =
1105 			    sc->sc_gain[cp->dev][ESO_LEFT];
1106 			break;
1107 		case 2:
1108 			cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT] =
1109 			    sc->sc_gain[cp->dev][ESO_LEFT];
1110 			cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] =
1111 			    sc->sc_gain[cp->dev][ESO_RIGHT];
1112 			break;
1113 		default:
1114 			return EINVAL;
1115 		}
1116 		break;
1117 
1118 	case ESO_MONO_PLAY_VOL:
1119 	case ESO_PCSPEAKER_VOL:
1120 	case ESO_MONO_REC_VOL:
1121 	case ESO_SPATIALIZER:
1122 		if (cp->un.value.num_channels != 1)
1123 			return EINVAL;
1124 		cp->un.value.level[AUDIO_MIXER_LEVEL_MONO] =
1125 		    sc->sc_gain[cp->dev][ESO_LEFT];
1126 		break;
1127 
1128 	case ESO_RECORD_MONITOR:
1129 		cp->un.ord = sc->sc_recmon;
1130 		break;
1131 
1132 	case ESO_RECORD_SOURCE:
1133 		cp->un.ord = sc->sc_recsrc;
1134 		break;
1135 
1136 	case ESO_MONOOUT_SOURCE:
1137 		cp->un.ord = sc->sc_monooutsrc;
1138 		break;
1139 
1140 	case ESO_MONOIN_BYPASS:
1141 		cp->un.ord = sc->sc_monoinbypass;
1142 		break;
1143 
1144 	case ESO_SPATIALIZER_ENABLE:
1145 		cp->un.ord = sc->sc_spatializer;
1146 		break;
1147 
1148 	case ESO_MIC_PREAMP:
1149 		cp->un.ord = sc->sc_preamp;
1150 		break;
1151 
1152 	case ESO_MASTER_MUTE:
1153 		/* Reload from mixer after hardware volume control use. */
1154 		if (sc->sc_gain[cp->dev][ESO_LEFT] == (uint8_t)~0)
1155 			eso_reload_master_vol(sc);
1156 		cp->un.ord = sc->sc_mvmute;
1157 		break;
1158 
1159 	default:
1160 		return EINVAL;
1161 	}
1162 
1163 	return 0;
1164 }
1165 
1166 static int
1167 eso_query_devinfo(void *hdl, mixer_devinfo_t *dip)
1168 {
1169 
1170 	switch (dip->index) {
1171 	case ESO_DAC_PLAY_VOL:
1172 		dip->mixer_class = ESO_INPUT_CLASS;
1173 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1174 		strcpy(dip->label.name, AudioNdac);
1175 		dip->type = AUDIO_MIXER_VALUE;
1176 		dip->un.v.num_channels = 2;
1177 		strcpy(dip->un.v.units.name, AudioNvolume);
1178 		break;
1179 	case ESO_MIC_PLAY_VOL:
1180 		dip->mixer_class = ESO_INPUT_CLASS;
1181 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1182 		strcpy(dip->label.name, AudioNmicrophone);
1183 		dip->type = AUDIO_MIXER_VALUE;
1184 		dip->un.v.num_channels = 2;
1185 		strcpy(dip->un.v.units.name, AudioNvolume);
1186 		break;
1187 	case ESO_LINE_PLAY_VOL:
1188 		dip->mixer_class = ESO_INPUT_CLASS;
1189 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1190 		strcpy(dip->label.name, AudioNline);
1191 		dip->type = AUDIO_MIXER_VALUE;
1192 		dip->un.v.num_channels = 2;
1193 		strcpy(dip->un.v.units.name, AudioNvolume);
1194 		break;
1195 	case ESO_SYNTH_PLAY_VOL:
1196 		dip->mixer_class = ESO_INPUT_CLASS;
1197 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1198 		strcpy(dip->label.name, AudioNfmsynth);
1199 		dip->type = AUDIO_MIXER_VALUE;
1200 		dip->un.v.num_channels = 2;
1201 		strcpy(dip->un.v.units.name, AudioNvolume);
1202 		break;
1203 	case ESO_MONO_PLAY_VOL:
1204 		dip->mixer_class = ESO_INPUT_CLASS;
1205 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1206 		strcpy(dip->label.name, "mono_in");
1207 		dip->type = AUDIO_MIXER_VALUE;
1208 		dip->un.v.num_channels = 1;
1209 		strcpy(dip->un.v.units.name, AudioNvolume);
1210 		break;
1211 	case ESO_CD_PLAY_VOL:
1212 		dip->mixer_class = ESO_INPUT_CLASS;
1213 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1214 		strcpy(dip->label.name, AudioNcd);
1215 		dip->type = AUDIO_MIXER_VALUE;
1216 		dip->un.v.num_channels = 2;
1217 		strcpy(dip->un.v.units.name, AudioNvolume);
1218 		break;
1219 	case ESO_AUXB_PLAY_VOL:
1220 		dip->mixer_class = ESO_INPUT_CLASS;
1221 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1222 		strcpy(dip->label.name, "auxb");
1223 		dip->type = AUDIO_MIXER_VALUE;
1224 		dip->un.v.num_channels = 2;
1225 		strcpy(dip->un.v.units.name, AudioNvolume);
1226 		break;
1227 
1228 	case ESO_MIC_PREAMP:
1229 		dip->mixer_class = ESO_MICROPHONE_CLASS;
1230 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1231 		strcpy(dip->label.name, AudioNpreamp);
1232 		dip->type = AUDIO_MIXER_ENUM;
1233 		dip->un.e.num_mem = 2;
1234 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
1235 		dip->un.e.member[0].ord = 0;
1236 		strcpy(dip->un.e.member[1].label.name, AudioNon);
1237 		dip->un.e.member[1].ord = 1;
1238 		break;
1239 	case ESO_MICROPHONE_CLASS:
1240 		dip->mixer_class = ESO_MICROPHONE_CLASS;
1241 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1242 		strcpy(dip->label.name, AudioNmicrophone);
1243 		dip->type = AUDIO_MIXER_CLASS;
1244 		break;
1245 
1246 	case ESO_INPUT_CLASS:
1247 		dip->mixer_class = ESO_INPUT_CLASS;
1248 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1249 		strcpy(dip->label.name, AudioCinputs);
1250 		dip->type = AUDIO_MIXER_CLASS;
1251 		break;
1252 
1253 	case ESO_MASTER_VOL:
1254 		dip->mixer_class = ESO_OUTPUT_CLASS;
1255 		dip->prev = AUDIO_MIXER_LAST;
1256 		dip->next = ESO_MASTER_MUTE;
1257 		strcpy(dip->label.name, AudioNmaster);
1258 		dip->type = AUDIO_MIXER_VALUE;
1259 		dip->un.v.num_channels = 2;
1260 		strcpy(dip->un.v.units.name, AudioNvolume);
1261 		break;
1262 	case ESO_MASTER_MUTE:
1263 		dip->mixer_class = ESO_OUTPUT_CLASS;
1264 		dip->prev = ESO_MASTER_VOL;
1265 		dip->next = AUDIO_MIXER_LAST;
1266 		strcpy(dip->label.name, AudioNmute);
1267 		dip->type = AUDIO_MIXER_ENUM;
1268 		dip->un.e.num_mem = 2;
1269 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
1270 		dip->un.e.member[0].ord = 0;
1271 		strcpy(dip->un.e.member[1].label.name, AudioNon);
1272 		dip->un.e.member[1].ord = 1;
1273 		break;
1274 
1275 	case ESO_PCSPEAKER_VOL:
1276 		dip->mixer_class = ESO_OUTPUT_CLASS;
1277 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1278 		strcpy(dip->label.name, "pc_speaker");
1279 		dip->type = AUDIO_MIXER_VALUE;
1280 		dip->un.v.num_channels = 1;
1281 		strcpy(dip->un.v.units.name, AudioNvolume);
1282 		break;
1283 	case ESO_MONOOUT_SOURCE:
1284 		dip->mixer_class = ESO_OUTPUT_CLASS;
1285 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1286 		strcpy(dip->label.name, "mono_out");
1287 		dip->type = AUDIO_MIXER_ENUM;
1288 		dip->un.e.num_mem = 3;
1289 		strcpy(dip->un.e.member[0].label.name, AudioNmute);
1290 		dip->un.e.member[0].ord = ESO_MIXREG_MPM_MOMUTE;
1291 		strcpy(dip->un.e.member[1].label.name, AudioNdac);
1292 		dip->un.e.member[1].ord = ESO_MIXREG_MPM_MOA2R;
1293 		strcpy(dip->un.e.member[2].label.name, AudioNmixerout);
1294 		dip->un.e.member[2].ord = ESO_MIXREG_MPM_MOREC;
1295 		break;
1296 
1297 	case ESO_MONOIN_BYPASS:
1298 		dip->mixer_class = ESO_MONOIN_CLASS;
1299 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1300 		strcpy(dip->label.name, "bypass");
1301 		dip->type = AUDIO_MIXER_ENUM;
1302 		dip->un.e.num_mem = 2;
1303 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
1304 		dip->un.e.member[0].ord = 0;
1305 		strcpy(dip->un.e.member[1].label.name, AudioNon);
1306 		dip->un.e.member[1].ord = 1;
1307 		break;
1308 	case ESO_MONOIN_CLASS:
1309 		dip->mixer_class = ESO_MONOIN_CLASS;
1310 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1311 		strcpy(dip->label.name, "mono_in");
1312 		dip->type = AUDIO_MIXER_CLASS;
1313 		break;
1314 
1315 	case ESO_SPATIALIZER:
1316 		dip->mixer_class = ESO_OUTPUT_CLASS;
1317 		dip->prev = AUDIO_MIXER_LAST;
1318 		dip->next = ESO_SPATIALIZER_ENABLE;
1319 		strcpy(dip->label.name, AudioNspatial);
1320 		dip->type = AUDIO_MIXER_VALUE;
1321 		dip->un.v.num_channels = 1;
1322 		strcpy(dip->un.v.units.name, "level");
1323 		break;
1324 	case ESO_SPATIALIZER_ENABLE:
1325 		dip->mixer_class = ESO_OUTPUT_CLASS;
1326 		dip->prev = ESO_SPATIALIZER;
1327 		dip->next = AUDIO_MIXER_LAST;
1328 		strcpy(dip->label.name, "enable");
1329 		dip->type = AUDIO_MIXER_ENUM;
1330 		dip->un.e.num_mem = 2;
1331 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
1332 		dip->un.e.member[0].ord = 0;
1333 		strcpy(dip->un.e.member[1].label.name, AudioNon);
1334 		dip->un.e.member[1].ord = 1;
1335 		break;
1336 
1337 	case ESO_OUTPUT_CLASS:
1338 		dip->mixer_class = ESO_OUTPUT_CLASS;
1339 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1340 		strcpy(dip->label.name, AudioCoutputs);
1341 		dip->type = AUDIO_MIXER_CLASS;
1342 		break;
1343 
1344 	case ESO_RECORD_MONITOR:
1345 		dip->mixer_class = ESO_MONITOR_CLASS;
1346 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1347 		strcpy(dip->label.name, AudioNmute);
1348 		dip->type = AUDIO_MIXER_ENUM;
1349 		dip->un.e.num_mem = 2;
1350 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
1351 		dip->un.e.member[0].ord = 0;
1352 		strcpy(dip->un.e.member[1].label.name, AudioNon);
1353 		dip->un.e.member[1].ord = 1;
1354 		break;
1355 	case ESO_MONITOR_CLASS:
1356 		dip->mixer_class = ESO_MONITOR_CLASS;
1357 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1358 		strcpy(dip->label.name, AudioCmonitor);
1359 		dip->type = AUDIO_MIXER_CLASS;
1360 		break;
1361 
1362 	case ESO_RECORD_VOL:
1363 		dip->mixer_class = ESO_RECORD_CLASS;
1364 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1365 		strcpy(dip->label.name, AudioNrecord);
1366 		dip->type = AUDIO_MIXER_VALUE;
1367 		strcpy(dip->un.v.units.name, AudioNvolume);
1368 		break;
1369 	case ESO_RECORD_SOURCE:
1370 		dip->mixer_class = ESO_RECORD_CLASS;
1371 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1372 		strcpy(dip->label.name, AudioNsource);
1373 		dip->type = AUDIO_MIXER_ENUM;
1374 		dip->un.e.num_mem = 4;
1375 		strcpy(dip->un.e.member[0].label.name, AudioNmicrophone);
1376 		dip->un.e.member[0].ord = ESO_MIXREG_ERS_MIC;
1377 		strcpy(dip->un.e.member[1].label.name, AudioNline);
1378 		dip->un.e.member[1].ord = ESO_MIXREG_ERS_LINE;
1379 		strcpy(dip->un.e.member[2].label.name, AudioNcd);
1380 		dip->un.e.member[2].ord = ESO_MIXREG_ERS_CD;
1381 		strcpy(dip->un.e.member[3].label.name, AudioNmixerout);
1382 		dip->un.e.member[3].ord = ESO_MIXREG_ERS_MIXER;
1383 		break;
1384 	case ESO_DAC_REC_VOL:
1385 		dip->mixer_class = ESO_RECORD_CLASS;
1386 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1387 		strcpy(dip->label.name, AudioNdac);
1388 		dip->type = AUDIO_MIXER_VALUE;
1389 		dip->un.v.num_channels = 2;
1390 		strcpy(dip->un.v.units.name, AudioNvolume);
1391 		break;
1392 	case ESO_MIC_REC_VOL:
1393 		dip->mixer_class = ESO_RECORD_CLASS;
1394 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1395 		strcpy(dip->label.name, AudioNmicrophone);
1396 		dip->type = AUDIO_MIXER_VALUE;
1397 		dip->un.v.num_channels = 2;
1398 		strcpy(dip->un.v.units.name, AudioNvolume);
1399 		break;
1400 	case ESO_LINE_REC_VOL:
1401 		dip->mixer_class = ESO_RECORD_CLASS;
1402 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1403 		strcpy(dip->label.name, AudioNline);
1404 		dip->type = AUDIO_MIXER_VALUE;
1405 		dip->un.v.num_channels = 2;
1406 		strcpy(dip->un.v.units.name, AudioNvolume);
1407 		break;
1408 	case ESO_SYNTH_REC_VOL:
1409 		dip->mixer_class = ESO_RECORD_CLASS;
1410 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1411 		strcpy(dip->label.name, AudioNfmsynth);
1412 		dip->type = AUDIO_MIXER_VALUE;
1413 		dip->un.v.num_channels = 2;
1414 		strcpy(dip->un.v.units.name, AudioNvolume);
1415 		break;
1416 	case ESO_MONO_REC_VOL:
1417 		dip->mixer_class = ESO_RECORD_CLASS;
1418 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1419 		strcpy(dip->label.name, "mono_in");
1420 		dip->type = AUDIO_MIXER_VALUE;
1421 		dip->un.v.num_channels = 1; /* No lies */
1422 		strcpy(dip->un.v.units.name, AudioNvolume);
1423 		break;
1424 	case ESO_CD_REC_VOL:
1425 		dip->mixer_class = ESO_RECORD_CLASS;
1426 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1427 		strcpy(dip->label.name, AudioNcd);
1428 		dip->type = AUDIO_MIXER_VALUE;
1429 		dip->un.v.num_channels = 2;
1430 		strcpy(dip->un.v.units.name, AudioNvolume);
1431 		break;
1432 	case ESO_AUXB_REC_VOL:
1433 		dip->mixer_class = ESO_RECORD_CLASS;
1434 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1435 		strcpy(dip->label.name, "auxb");
1436 		dip->type = AUDIO_MIXER_VALUE;
1437 		dip->un.v.num_channels = 2;
1438 		strcpy(dip->un.v.units.name, AudioNvolume);
1439 		break;
1440 	case ESO_RECORD_CLASS:
1441 		dip->mixer_class = ESO_RECORD_CLASS;
1442 		dip->next = dip->prev = AUDIO_MIXER_LAST;
1443 		strcpy(dip->label.name, AudioCrecord);
1444 		dip->type = AUDIO_MIXER_CLASS;
1445 		break;
1446 
1447 	default:
1448 		return ENXIO;
1449 	}
1450 
1451 	return 0;
1452 }
1453 
1454 static int
1455 eso_allocmem(struct eso_softc *sc, size_t size, size_t align, size_t boundary,
1456     int flags, int direction, struct eso_dma *ed)
1457 {
1458 	int error, wait;
1459 
1460 	wait = (flags & M_NOWAIT) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK;
1461 	ed->ed_size = size;
1462 
1463 	error = bus_dmamem_alloc(ed->ed_dmat, ed->ed_size, align, boundary,
1464 	    ed->ed_segs, sizeof (ed->ed_segs) / sizeof (ed->ed_segs[0]),
1465 	    &ed->ed_nsegs, wait);
1466 	if (error)
1467 		goto out;
1468 
1469 	error = bus_dmamem_map(ed->ed_dmat, ed->ed_segs, ed->ed_nsegs,
1470 	    ed->ed_size, &ed->ed_addr, wait | BUS_DMA_COHERENT);
1471 	if (error)
1472 		goto free;
1473 
1474 	error = bus_dmamap_create(ed->ed_dmat, ed->ed_size, 1, ed->ed_size, 0,
1475 	    wait, &ed->ed_map);
1476 	if (error)
1477 		goto unmap;
1478 
1479 	error = bus_dmamap_load(ed->ed_dmat, ed->ed_map, ed->ed_addr,
1480 	    ed->ed_size, NULL, wait |
1481 	    (direction == AUMODE_RECORD) ? BUS_DMA_READ : BUS_DMA_WRITE);
1482 	if (error)
1483 		goto destroy;
1484 
1485 	return 0;
1486 
1487  destroy:
1488 	bus_dmamap_destroy(ed->ed_dmat, ed->ed_map);
1489  unmap:
1490 	bus_dmamem_unmap(ed->ed_dmat, ed->ed_addr, ed->ed_size);
1491  free:
1492 	bus_dmamem_free(ed->ed_dmat, ed->ed_segs, ed->ed_nsegs);
1493  out:
1494 	return error;
1495 }
1496 
1497 static void
1498 eso_freemem(struct eso_dma *ed)
1499 {
1500 
1501 	bus_dmamap_unload(ed->ed_dmat, ed->ed_map);
1502 	bus_dmamap_destroy(ed->ed_dmat, ed->ed_map);
1503 	bus_dmamem_unmap(ed->ed_dmat, ed->ed_addr, ed->ed_size);
1504 	bus_dmamem_free(ed->ed_dmat, ed->ed_segs, ed->ed_nsegs);
1505 }
1506 
1507 static void *
1508 eso_allocm(void *hdl, int direction, size_t size, struct malloc_type *type,
1509     int flags)
1510 {
1511 	struct eso_softc *sc;
1512 	struct eso_dma *ed;
1513 	size_t boundary;
1514 	int error;
1515 
1516 	sc = hdl;
1517 	if ((ed = malloc(sizeof (*ed), type, flags)) == NULL)
1518 		return NULL;
1519 
1520 	/*
1521 	 * Apparently the Audio 1 DMA controller's current address
1522 	 * register can't roll over a 64K address boundary, so we have to
1523 	 * take care of that ourselves.  Similarly, the Audio 2 DMA
1524 	 * controller needs a 1M address boundary.
1525 	 */
1526 	if (direction == AUMODE_RECORD)
1527 		boundary = 0x10000;
1528 	else
1529 		boundary = 0x100000;
1530 
1531 	/*
1532 	 * XXX Work around allocation problems for Audio 1, which
1533 	 * XXX implements the 24 low address bits only, with
1534 	 * XXX machine-specific DMA tag use.
1535 	 */
1536 #ifdef alpha
1537 	/*
1538 	 * XXX Force allocation through the (ISA) SGMAP.
1539 	 */
1540 	if (direction == AUMODE_RECORD)
1541 		ed->ed_dmat = alphabus_dma_get_tag(sc->sc_dmat, ALPHA_BUS_ISA);
1542 	else
1543 #elif defined(amd64) || defined(i386)
1544 	/*
1545 	 * XXX Force allocation through the ISA DMA tag.
1546 	 */
1547 	if (direction == AUMODE_RECORD)
1548 		ed->ed_dmat = &isa_bus_dma_tag;
1549 	else
1550 #endif
1551 		ed->ed_dmat = sc->sc_dmat;
1552 
1553 	error = eso_allocmem(sc, size, 32, boundary, flags, direction, ed);
1554 	if (error) {
1555 		free(ed, type);
1556 		return NULL;
1557 	}
1558 	ed->ed_next = sc->sc_dmas;
1559 	sc->sc_dmas = ed;
1560 
1561 	return KVADDR(ed);
1562 }
1563 
1564 static void
1565 eso_freem(void *hdl, void *addr, struct malloc_type *type)
1566 {
1567 	struct eso_softc *sc;
1568 	struct eso_dma *p, **pp;
1569 
1570 	sc = hdl;
1571 	for (pp = &sc->sc_dmas; (p = *pp) != NULL; pp = &p->ed_next) {
1572 		if (KVADDR(p) == addr) {
1573 			eso_freemem(p);
1574 			*pp = p->ed_next;
1575 			free(p, type);
1576 			return;
1577 		}
1578 	}
1579 }
1580 
1581 static size_t
1582 eso_round_buffersize(void *hdl, int direction, size_t bufsize)
1583 {
1584 	size_t maxsize;
1585 
1586 	/*
1587 	 * The playback DMA buffer size on the Solo-1 is limited to 0xfff0
1588 	 * bytes.  This is because IO_A2DMAC is a two byte value
1589 	 * indicating the literal byte count, and the 4 least significant
1590 	 * bits are read-only.  Zero is not used as a special case for
1591 	 * 0x10000.
1592 	 *
1593 	 * For recording, DMAC_DMAC is the byte count - 1, so 0x10000 can
1594 	 * be represented.
1595 	 */
1596 	maxsize = (direction == AUMODE_PLAY) ? 0xfff0 : 0x10000;
1597 
1598 	if (bufsize > maxsize)
1599 		bufsize = maxsize;
1600 
1601 	return bufsize;
1602 }
1603 
1604 static paddr_t
1605 eso_mappage(void *hdl, void *addr, off_t offs, int prot)
1606 {
1607 	struct eso_softc *sc;
1608 	struct eso_dma *ed;
1609 
1610 	sc = hdl;
1611 	if (offs < 0)
1612 		return -1;
1613 	for (ed = sc->sc_dmas; ed != NULL && KVADDR(ed) != addr;
1614 	     ed = ed->ed_next)
1615 		continue;
1616 	if (ed == NULL)
1617 		return -1;
1618 
1619 	return bus_dmamem_mmap(ed->ed_dmat, ed->ed_segs, ed->ed_nsegs,
1620 	    offs, prot, BUS_DMA_WAITOK);
1621 }
1622 
1623 /* ARGSUSED */
1624 static int
1625 eso_get_props(void *hdl)
1626 {
1627 
1628 	return AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT |
1629 	    AUDIO_PROP_FULLDUPLEX;
1630 }
1631 
1632 static int
1633 eso_trigger_output(void *hdl, void *start, void *end, int blksize,
1634     void (*intr)(void *), void *arg, const audio_params_t *param)
1635 {
1636 	struct eso_softc *sc;
1637 	struct eso_dma *ed;
1638 	uint8_t a2c1;
1639 
1640 	sc = hdl;
1641 	DPRINTF((
1642 	    "%s: trigger_output: start %p, end %p, blksize %d, intr %p(%p)\n",
1643 	    sc->sc_dev.dv_xname, start, end, blksize, intr, arg));
1644 	DPRINTF(("%s: param: rate %u, encoding %u, precision %u, channels %u\n",
1645 	    sc->sc_dev.dv_xname, param->sample_rate, param->encoding,
1646 	    param->precision, param->channels));
1647 
1648 	/* Find DMA buffer. */
1649 	for (ed = sc->sc_dmas; ed != NULL && KVADDR(ed) != start;
1650 	     ed = ed->ed_next)
1651 		continue;
1652 	if (ed == NULL) {
1653 		printf("%s: trigger_output: bad addr %p\n",
1654 		    sc->sc_dev.dv_xname, start);
1655 		return EINVAL;
1656 	}
1657 	DPRINTF(("%s: dmaaddr %lx\n",
1658 	    sc->sc_dev.dv_xname, (unsigned long)DMAADDR(ed)));
1659 
1660 	sc->sc_pintr = intr;
1661 	sc->sc_parg = arg;
1662 
1663 	/* Compute drain timeout. */
1664 	sc->sc_pdrain = (blksize * NBBY * hz) /
1665 	    (param->sample_rate * param->channels *
1666 	     param->precision) + 2;	/* slop */
1667 
1668 	/* DMA transfer count (in `words'!) reload using 2's complement. */
1669 	blksize = -(blksize >> 1);
1670 	eso_write_mixreg(sc, ESO_MIXREG_A2TCRLO, blksize & 0xff);
1671 	eso_write_mixreg(sc, ESO_MIXREG_A2TCRHI, blksize >> 8);
1672 
1673 	/* Update DAC to reflect DMA count and audio parameters. */
1674 	/* Note: we cache A2C2 in order to avoid r/m/w at interrupt time. */
1675 	if (param->precision == 16)
1676 		sc->sc_a2c2 |= ESO_MIXREG_A2C2_16BIT;
1677 	else
1678 		sc->sc_a2c2 &= ~ESO_MIXREG_A2C2_16BIT;
1679 	if (param->channels == 2)
1680 		sc->sc_a2c2 |= ESO_MIXREG_A2C2_STEREO;
1681 	else
1682 		sc->sc_a2c2 &= ~ESO_MIXREG_A2C2_STEREO;
1683 	if (param->encoding == AUDIO_ENCODING_SLINEAR_BE ||
1684 	    param->encoding == AUDIO_ENCODING_SLINEAR_LE)
1685 		sc->sc_a2c2 |= ESO_MIXREG_A2C2_SIGNED;
1686 	else
1687 		sc->sc_a2c2 &= ~ESO_MIXREG_A2C2_SIGNED;
1688 	/* Unmask IRQ. */
1689 	sc->sc_a2c2 |= ESO_MIXREG_A2C2_IRQM;
1690 	eso_write_mixreg(sc, ESO_MIXREG_A2C2, sc->sc_a2c2);
1691 
1692 	/* Set up DMA controller. */
1693 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAA,
1694 	    DMAADDR(ed));
1695 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAC,
1696 	    (uint8_t *)end - (uint8_t *)start);
1697 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, ESO_IO_A2DMAM,
1698 	    ESO_IO_A2DMAM_DMAENB | ESO_IO_A2DMAM_AUTO);
1699 
1700 	/* Start DMA. */
1701 	a2c1 = eso_read_mixreg(sc, ESO_MIXREG_A2C1);
1702 	a2c1 &= ~ESO_MIXREG_A2C1_RESV0; /* Paranoia? XXX bit 5 */
1703 	a2c1 |= ESO_MIXREG_A2C1_FIFOENB | ESO_MIXREG_A2C1_DMAENB |
1704 	    ESO_MIXREG_A2C1_AUTO;
1705 	eso_write_mixreg(sc, ESO_MIXREG_A2C1, a2c1);
1706 
1707 	return 0;
1708 }
1709 
1710 static int
1711 eso_trigger_input(void *hdl, void *start, void *end, int blksize,
1712     void (*intr)(void *), void *arg, const audio_params_t *param)
1713 {
1714 	struct eso_softc *sc;
1715 	struct eso_dma *ed;
1716 	uint8_t actl, a1c1;
1717 
1718 	sc = hdl;
1719 	DPRINTF((
1720 	    "%s: trigger_input: start %p, end %p, blksize %d, intr %p(%p)\n",
1721 	    sc->sc_dev.dv_xname, start, end, blksize, intr, arg));
1722 	DPRINTF(("%s: param: rate %u, encoding %u, precision %u, channels %u\n",
1723 	    sc->sc_dev.dv_xname, param->sample_rate, param->encoding,
1724 	    param->precision, param->channels));
1725 
1726 	/*
1727 	 * If we failed to configure the Audio 1 DMA controller, bail here
1728 	 * while retaining availability of the DAC direction (in Audio 2).
1729 	 */
1730 	if (!sc->sc_dmac_configured)
1731 		return EIO;
1732 
1733 	/* Find DMA buffer. */
1734 	for (ed = sc->sc_dmas; ed != NULL && KVADDR(ed) != start;
1735 	     ed = ed->ed_next)
1736 		continue;
1737 	if (ed == NULL) {
1738 		printf("%s: trigger_output: bad addr %p\n",
1739 		    sc->sc_dev.dv_xname, start);
1740 		return EINVAL;
1741 	}
1742 	DPRINTF(("%s: dmaaddr %lx\n",
1743 	    sc->sc_dev.dv_xname, (unsigned long)DMAADDR(ed)));
1744 
1745 	sc->sc_rintr = intr;
1746 	sc->sc_rarg = arg;
1747 
1748 	/* Compute drain timeout. */
1749 	sc->sc_rdrain = (blksize * NBBY * hz) /
1750 	    (param->sample_rate * param->channels *
1751 	     param->precision) + 2;	/* slop */
1752 
1753 	/* Set up ADC DMA converter parameters. */
1754 	actl = eso_read_ctlreg(sc, ESO_CTLREG_ACTL);
1755 	if (param->channels == 2) {
1756 		actl &= ~ESO_CTLREG_ACTL_MONO;
1757 		actl |= ESO_CTLREG_ACTL_STEREO;
1758 	} else {
1759 		actl &= ~ESO_CTLREG_ACTL_STEREO;
1760 		actl |= ESO_CTLREG_ACTL_MONO;
1761 	}
1762 	eso_write_ctlreg(sc, ESO_CTLREG_ACTL, actl);
1763 
1764 	/* Set up Transfer Type: maybe move to attach time? */
1765 	eso_write_ctlreg(sc, ESO_CTLREG_A1TT, ESO_CTLREG_A1TT_DEMAND4);
1766 
1767 	/* DMA transfer count reload using 2's complement. */
1768 	blksize = -blksize;
1769 	eso_write_ctlreg(sc, ESO_CTLREG_A1TCRLO, blksize & 0xff);
1770 	eso_write_ctlreg(sc, ESO_CTLREG_A1TCRHI, blksize >> 8);
1771 
1772 	/* Set up and enable Audio 1 DMA FIFO. */
1773 	a1c1 = ESO_CTLREG_A1C1_RESV1 | ESO_CTLREG_A1C1_FIFOENB;
1774 	if (param->precision == 16)
1775 		a1c1 |= ESO_CTLREG_A1C1_16BIT;
1776 	if (param->channels == 2)
1777 		a1c1 |= ESO_CTLREG_A1C1_STEREO;
1778 	else
1779 		a1c1 |= ESO_CTLREG_A1C1_MONO;
1780 	if (param->encoding == AUDIO_ENCODING_SLINEAR_BE ||
1781 	    param->encoding == AUDIO_ENCODING_SLINEAR_LE)
1782 		a1c1 |= ESO_CTLREG_A1C1_SIGNED;
1783 	eso_write_ctlreg(sc, ESO_CTLREG_A1C1, a1c1);
1784 
1785 	/* Set up ADC IRQ/DRQ parameters. */
1786 	eso_write_ctlreg(sc, ESO_CTLREG_LAIC,
1787 	    ESO_CTLREG_LAIC_PINENB | ESO_CTLREG_LAIC_EXTENB);
1788 	eso_write_ctlreg(sc, ESO_CTLREG_DRQCTL,
1789 	    ESO_CTLREG_DRQCTL_ENB1 | ESO_CTLREG_DRQCTL_EXTENB);
1790 
1791 	/* Set up and enable DMA controller. */
1792 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_CLEAR, 0);
1793 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MASK,
1794 	    ESO_DMAC_MASK_MASK);
1795 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MODE,
1796 	    DMA37MD_WRITE | DMA37MD_LOOP | DMA37MD_DEMAND);
1797 	bus_space_write_4(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_DMAA,
1798 	    DMAADDR(ed));
1799 	bus_space_write_2(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_DMAC,
1800 	    (uint8_t *)end - (uint8_t *)start - 1);
1801 	bus_space_write_1(sc->sc_dmac_iot, sc->sc_dmac_ioh, ESO_DMAC_MASK, 0);
1802 
1803 	/* Start DMA. */
1804 	eso_write_ctlreg(sc, ESO_CTLREG_A1C2,
1805 	    ESO_CTLREG_A1C2_DMAENB | ESO_CTLREG_A1C2_READ |
1806 	    ESO_CTLREG_A1C2_AUTO | ESO_CTLREG_A1C2_ADC);
1807 
1808 	return 0;
1809 }
1810 
1811 /*
1812  * Mixer utility functions.
1813  */
1814 static int
1815 eso_set_recsrc(struct eso_softc *sc, unsigned int recsrc)
1816 {
1817 	mixer_devinfo_t di;
1818 	int i;
1819 
1820 	di.index = ESO_RECORD_SOURCE;
1821 	if (eso_query_devinfo(sc, &di) != 0)
1822 		panic("eso_set_recsrc: eso_query_devinfo failed");
1823 
1824 	for (i = 0; i < di.un.e.num_mem; i++) {
1825 		if (recsrc == di.un.e.member[i].ord) {
1826 			eso_write_mixreg(sc, ESO_MIXREG_ERS, recsrc);
1827 			sc->sc_recsrc = recsrc;
1828 			return 0;
1829 		}
1830 	}
1831 
1832 	return EINVAL;
1833 }
1834 
1835 static int
1836 eso_set_monooutsrc(struct eso_softc *sc, unsigned int monooutsrc)
1837 {
1838 	mixer_devinfo_t di;
1839 	int i;
1840 	uint8_t mpm;
1841 
1842 	di.index = ESO_MONOOUT_SOURCE;
1843 	if (eso_query_devinfo(sc, &di) != 0)
1844 		panic("eso_set_monooutsrc: eso_query_devinfo failed");
1845 
1846 	for (i = 0; i < di.un.e.num_mem; i++) {
1847 		if (monooutsrc == di.un.e.member[i].ord) {
1848 			mpm = eso_read_mixreg(sc, ESO_MIXREG_MPM);
1849 			mpm &= ~ESO_MIXREG_MPM_MOMASK;
1850 			mpm |= monooutsrc;
1851 			eso_write_mixreg(sc, ESO_MIXREG_MPM, mpm);
1852 			sc->sc_monooutsrc = monooutsrc;
1853 			return 0;
1854 		}
1855 	}
1856 
1857 	return EINVAL;
1858 }
1859 
1860 static int
1861 eso_set_monoinbypass(struct eso_softc *sc, unsigned int monoinbypass)
1862 {
1863 	mixer_devinfo_t di;
1864 	int i;
1865 	uint8_t mpm;
1866 
1867 	di.index = ESO_MONOIN_BYPASS;
1868 	if (eso_query_devinfo(sc, &di) != 0)
1869 		panic("eso_set_monoinbypass: eso_query_devinfo failed");
1870 
1871 	for (i = 0; i < di.un.e.num_mem; i++) {
1872 		if (monoinbypass == di.un.e.member[i].ord) {
1873 			mpm = eso_read_mixreg(sc, ESO_MIXREG_MPM);
1874 			mpm &= ~(ESO_MIXREG_MPM_MOMASK | ESO_MIXREG_MPM_RESV0);
1875 			mpm |= (monoinbypass ? ESO_MIXREG_MPM_MIBYPASS : 0);
1876 			eso_write_mixreg(sc, ESO_MIXREG_MPM, mpm);
1877 			sc->sc_monoinbypass = monoinbypass;
1878 			return 0;
1879 		}
1880 	}
1881 
1882 	return EINVAL;
1883 }
1884 
1885 static int
1886 eso_set_preamp(struct eso_softc *sc, unsigned int preamp)
1887 {
1888 	mixer_devinfo_t di;
1889 	int i;
1890 	uint8_t mpm;
1891 
1892 	di.index = ESO_MIC_PREAMP;
1893 	if (eso_query_devinfo(sc, &di) != 0)
1894 		panic("eso_set_preamp: eso_query_devinfo failed");
1895 
1896 	for (i = 0; i < di.un.e.num_mem; i++) {
1897 		if (preamp == di.un.e.member[i].ord) {
1898 			mpm = eso_read_mixreg(sc, ESO_MIXREG_MPM);
1899 			mpm &= ~(ESO_MIXREG_MPM_PREAMP | ESO_MIXREG_MPM_RESV0);
1900 			mpm |= (preamp ? ESO_MIXREG_MPM_PREAMP : 0);
1901 			eso_write_mixreg(sc, ESO_MIXREG_MPM, mpm);
1902 			sc->sc_preamp = preamp;
1903 			return 0;
1904 		}
1905 	}
1906 
1907 	return EINVAL;
1908 }
1909 
1910 /*
1911  * Reload Master Volume and Mute values in softc from mixer; used when
1912  * those have previously been invalidated by use of hardware volume controls.
1913  */
1914 static void
1915 eso_reload_master_vol(struct eso_softc *sc)
1916 {
1917 	uint8_t mv;
1918 
1919 	mv = eso_read_mixreg(sc, ESO_MIXREG_LMVM);
1920 	sc->sc_gain[ESO_MASTER_VOL][ESO_LEFT] =
1921 	    (mv & ~ESO_MIXREG_LMVM_MUTE) << 2;
1922 	mv = eso_read_mixreg(sc, ESO_MIXREG_LMVM);
1923 	sc->sc_gain[ESO_MASTER_VOL][ESO_RIGHT] =
1924 	    (mv & ~ESO_MIXREG_RMVM_MUTE) << 2;
1925 	/* Currently both channels are muted simultaneously; either is OK. */
1926 	sc->sc_mvmute = (mv & ESO_MIXREG_RMVM_MUTE) != 0;
1927 }
1928 
1929 static void
1930 eso_set_gain(struct eso_softc *sc, unsigned int port)
1931 {
1932 	uint8_t mixreg, tmp;
1933 
1934 	switch (port) {
1935 	case ESO_DAC_PLAY_VOL:
1936 		mixreg = ESO_MIXREG_PVR_A2;
1937 		break;
1938 	case ESO_MIC_PLAY_VOL:
1939 		mixreg = ESO_MIXREG_PVR_MIC;
1940 		break;
1941 	case ESO_LINE_PLAY_VOL:
1942 		mixreg = ESO_MIXREG_PVR_LINE;
1943 		break;
1944 	case ESO_SYNTH_PLAY_VOL:
1945 		mixreg = ESO_MIXREG_PVR_SYNTH;
1946 		break;
1947 	case ESO_CD_PLAY_VOL:
1948 		mixreg = ESO_MIXREG_PVR_CD;
1949 		break;
1950 	case ESO_AUXB_PLAY_VOL:
1951 		mixreg = ESO_MIXREG_PVR_AUXB;
1952 		break;
1953 
1954 	case ESO_DAC_REC_VOL:
1955 		mixreg = ESO_MIXREG_RVR_A2;
1956 		break;
1957 	case ESO_MIC_REC_VOL:
1958 		mixreg = ESO_MIXREG_RVR_MIC;
1959 		break;
1960 	case ESO_LINE_REC_VOL:
1961 		mixreg = ESO_MIXREG_RVR_LINE;
1962 		break;
1963 	case ESO_SYNTH_REC_VOL:
1964 		mixreg = ESO_MIXREG_RVR_SYNTH;
1965 		break;
1966 	case ESO_CD_REC_VOL:
1967 		mixreg = ESO_MIXREG_RVR_CD;
1968 		break;
1969 	case ESO_AUXB_REC_VOL:
1970 		mixreg = ESO_MIXREG_RVR_AUXB;
1971 		break;
1972 	case ESO_MONO_PLAY_VOL:
1973 		mixreg = ESO_MIXREG_PVR_MONO;
1974 		break;
1975 	case ESO_MONO_REC_VOL:
1976 		mixreg = ESO_MIXREG_RVR_MONO;
1977 		break;
1978 
1979 	case ESO_PCSPEAKER_VOL:
1980 		/* Special case - only 3-bit, mono, and reserved bits. */
1981 		tmp = eso_read_mixreg(sc, ESO_MIXREG_PCSVR);
1982 		tmp &= ESO_MIXREG_PCSVR_RESV;
1983 		/* Map bits 7:5 -> 2:0. */
1984 		tmp |= (sc->sc_gain[port][ESO_LEFT] >> 5);
1985 		eso_write_mixreg(sc, ESO_MIXREG_PCSVR, tmp);
1986 		return;
1987 
1988 	case ESO_MASTER_VOL:
1989 		/* Special case - separate regs, and 6-bit precision. */
1990 		/* Map bits 7:2 -> 5:0, reflect mute settings. */
1991 		eso_write_mixreg(sc, ESO_MIXREG_LMVM,
1992 		    (sc->sc_gain[port][ESO_LEFT] >> 2) |
1993 		    (sc->sc_mvmute ? ESO_MIXREG_LMVM_MUTE : 0x00));
1994 		eso_write_mixreg(sc, ESO_MIXREG_RMVM,
1995 		    (sc->sc_gain[port][ESO_RIGHT] >> 2) |
1996 		    (sc->sc_mvmute ? ESO_MIXREG_RMVM_MUTE : 0x00));
1997 		return;
1998 
1999 	case ESO_SPATIALIZER:
2000 		/* Special case - only `mono', and higher precision. */
2001 		eso_write_mixreg(sc, ESO_MIXREG_SPATLVL,
2002 		    sc->sc_gain[port][ESO_LEFT]);
2003 		return;
2004 
2005 	case ESO_RECORD_VOL:
2006 		/* Very Special case, controller register. */
2007 		eso_write_ctlreg(sc, ESO_CTLREG_RECLVL,ESO_4BIT_GAIN_TO_STEREO(
2008 		   sc->sc_gain[port][ESO_LEFT], sc->sc_gain[port][ESO_RIGHT]));
2009 		return;
2010 
2011 	default:
2012 #ifdef DIAGNOSTIC
2013 		panic("eso_set_gain: bad port %u", port);
2014 		/* NOTREACHED */
2015 #else
2016 		return;
2017 #endif
2018 	}
2019 
2020 	eso_write_mixreg(sc, mixreg, ESO_4BIT_GAIN_TO_STEREO(
2021 	    sc->sc_gain[port][ESO_LEFT], sc->sc_gain[port][ESO_RIGHT]));
2022 }
2023