xref: /netbsd/sys/dev/pci/sv.c (revision 6550d01e)
1 /*      $NetBSD: sv.c,v 1.44 2009/11/26 15:17:10 njoly Exp $ */
2 /*      $OpenBSD: sv.c,v 1.2 1998/07/13 01:50:15 csapuntz Exp $ */
3 
4 /*
5  * Copyright (c) 1999 The NetBSD Foundation, Inc.
6  * All rights reserved.
7  *
8  * This code is derived from software contributed to The NetBSD Foundation
9  * by Charles M. Hannum.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30  * POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 /*
34  * Copyright (c) 1998 Constantine Paul Sapuntzakis
35  * All rights reserved
36  *
37  * Author: Constantine Paul Sapuntzakis (csapuntz@cvs.openbsd.org)
38  *
39  * Redistribution and use in source and binary forms, with or without
40  * modification, are permitted provided that the following conditions
41  * are met:
42  * 1. Redistributions of source code must retain the above copyright
43  *    notice, this list of conditions and the following disclaimer.
44  * 2. Redistributions in binary form must reproduce the above copyright
45  *    notice, this list of conditions and the following disclaimer in the
46  *    documentation and/or other materials provided with the distribution.
47  * 3. The author's name or those of the contributors may be used to
48  *    endorse or promote products derived from this software without
49  *    specific prior written permission.
50  *
51  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTORS
52  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
53  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
54  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
55  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
56  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
57  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
58  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
59  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
60  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
61  * POSSIBILITY OF SUCH DAMAGE.
62  */
63 
64 /*
65  * S3 SonicVibes driver
66  *   Heavily based on the eap driver by Lennart Augustsson
67  */
68 
69 #include <sys/cdefs.h>
70 __KERNEL_RCSID(0, "$NetBSD: sv.c,v 1.44 2009/11/26 15:17:10 njoly Exp $");
71 
72 #include <sys/param.h>
73 #include <sys/systm.h>
74 #include <sys/kernel.h>
75 #include <sys/malloc.h>
76 #include <sys/device.h>
77 
78 #include <dev/pci/pcireg.h>
79 #include <dev/pci/pcivar.h>
80 #include <dev/pci/pcidevs.h>
81 
82 #include <sys/audioio.h>
83 #include <dev/audio_if.h>
84 #include <dev/mulaw.h>
85 #include <dev/auconv.h>
86 
87 #include <dev/ic/i8237reg.h>
88 #include <dev/pci/svreg.h>
89 #include <dev/pci/svvar.h>
90 
91 #include <sys/bus.h>
92 
93 /* XXX
94  * The SonicVibes DMA is broken and only works on 24-bit addresses.
95  * As long as bus_dmamem_alloc_range() is missing we use the ISA
96  * DMA tag on i386.
97  */
98 #if defined(i386)
99 #include "isa.h"
100 #if NISA > 0
101 #include <dev/isa/isavar.h>
102 #endif
103 #endif
104 
105 #ifdef AUDIO_DEBUG
106 #define DPRINTF(x)	if (svdebug) printf x
107 #define DPRINTFN(n,x)	if (svdebug>(n)) printf x
108 int	svdebug = 0;
109 #else
110 #define DPRINTF(x)
111 #define DPRINTFN(n,x)
112 #endif
113 
114 static int	sv_match(device_t, cfdata_t, void *);
115 static void	sv_attach(device_t, device_t, void *);
116 static int	sv_intr(void *);
117 
118 struct sv_dma {
119 	bus_dmamap_t map;
120 	void *addr;
121 	bus_dma_segment_t segs[1];
122 	int nsegs;
123 	size_t size;
124 	struct sv_dma *next;
125 };
126 #define DMAADDR(p) ((p)->map->dm_segs[0].ds_addr)
127 #define KERNADDR(p) ((void *)((p)->addr))
128 
129 CFATTACH_DECL(sv, sizeof(struct sv_softc),
130     sv_match, sv_attach, NULL, NULL);
131 
132 static struct audio_device sv_device = {
133 	"S3 SonicVibes",
134 	"",
135 	"sv"
136 };
137 
138 #define ARRAY_SIZE(foo)  ((sizeof(foo)) / sizeof(foo[0]))
139 
140 static int	sv_allocmem(struct sv_softc *, size_t, size_t, int,
141 			    struct sv_dma *);
142 static int	sv_freemem(struct sv_softc *, struct sv_dma *);
143 
144 static void	sv_init_mixer(struct sv_softc *);
145 
146 static int	sv_open(void *, int);
147 static int	sv_query_encoding(void *, struct audio_encoding *);
148 static int	sv_set_params(void *, int, int, audio_params_t *,
149 			      audio_params_t *, stream_filter_list_t *,
150 			      stream_filter_list_t *);
151 static int	sv_round_blocksize(void *, int, int, const audio_params_t *);
152 static int	sv_trigger_output(void *, void *, void *, int, void (*)(void *),
153 				  void *, const audio_params_t *);
154 static int	sv_trigger_input(void *, void *, void *, int, void (*)(void *),
155 				 void *, const audio_params_t *);
156 static int	sv_halt_output(void *);
157 static int	sv_halt_input(void *);
158 static int	sv_getdev(void *, struct audio_device *);
159 static int	sv_mixer_set_port(void *, mixer_ctrl_t *);
160 static int	sv_mixer_get_port(void *, mixer_ctrl_t *);
161 static int	sv_query_devinfo(void *, mixer_devinfo_t *);
162 static void *	sv_malloc(void *, int, size_t, struct malloc_type *, int);
163 static void	sv_free(void *, void *, struct malloc_type *);
164 static size_t	sv_round_buffersize(void *, int, size_t);
165 static paddr_t	sv_mappage(void *, void *, off_t, int);
166 static int	sv_get_props(void *);
167 
168 #ifdef AUDIO_DEBUG
169 void    sv_dumpregs(struct sv_softc *sc);
170 #endif
171 
172 static const struct audio_hw_if sv_hw_if = {
173 	sv_open,
174 	NULL,			/* close */
175 	NULL,
176 	sv_query_encoding,
177 	sv_set_params,
178 	sv_round_blocksize,
179 	NULL,
180 	NULL,
181 	NULL,
182 	NULL,
183 	NULL,
184 	sv_halt_output,
185 	sv_halt_input,
186 	NULL,
187 	sv_getdev,
188 	NULL,
189 	sv_mixer_set_port,
190 	sv_mixer_get_port,
191 	sv_query_devinfo,
192 	sv_malloc,
193 	sv_free,
194 	sv_round_buffersize,
195 	sv_mappage,
196 	sv_get_props,
197 	sv_trigger_output,
198 	sv_trigger_input,
199 	NULL,
200 	NULL,
201 };
202 
203 #define SV_NFORMATS	4
204 static const struct audio_format sv_formats[SV_NFORMATS] = {
205 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
206 	 2, AUFMT_STEREO, 0, {2000, 48000}},
207 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
208 	 1, AUFMT_MONAURAL, 0, {2000, 48000}},
209 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 8, 8,
210 	 2, AUFMT_STEREO, 0, {2000, 48000}},
211 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 8, 8,
212 	 1, AUFMT_MONAURAL, 0, {2000, 48000}},
213 };
214 
215 
216 static void
217 sv_write(struct sv_softc *sc, uint8_t reg, uint8_t val)
218 {
219 
220 	DPRINTFN(8,("sv_write(0x%x, 0x%x)\n", reg, val));
221 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, reg, val);
222 }
223 
224 static uint8_t
225 sv_read(struct sv_softc *sc, uint8_t reg)
226 {
227 	uint8_t val;
228 
229 	val = bus_space_read_1(sc->sc_iot, sc->sc_ioh, reg);
230 	DPRINTFN(8,("sv_read(0x%x) = 0x%x\n", reg, val));
231 	return val;
232 }
233 
234 static uint8_t
235 sv_read_indirect(struct sv_softc *sc, uint8_t reg)
236 {
237 	uint8_t val;
238 	int s;
239 
240 	s = splaudio();
241 	sv_write(sc, SV_CODEC_IADDR, reg & SV_IADDR_MASK);
242 	val = sv_read(sc, SV_CODEC_IDATA);
243 	splx(s);
244 	return val;
245 }
246 
247 static void
248 sv_write_indirect(struct sv_softc *sc, uint8_t reg, uint8_t val)
249 {
250 	uint8_t iaddr;
251 	int s;
252 
253 	iaddr = reg & SV_IADDR_MASK;
254 	s = splaudio();
255 	if (reg == SV_DMA_DATA_FORMAT)
256 		iaddr |= SV_IADDR_MCE;
257 
258 	sv_write(sc, SV_CODEC_IADDR, iaddr);
259 	sv_write(sc, SV_CODEC_IDATA, val);
260 	splx(s);
261 }
262 
263 static int
264 sv_match(device_t parent, cfdata_t match, void *aux)
265 {
266 	struct pci_attach_args *pa;
267 
268 	pa = aux;
269 	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_S3 &&
270 	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_S3_SONICVIBES)
271 		return 1;
272 
273 	return 0;
274 }
275 
276 static pcireg_t pci_io_alloc_low, pci_io_alloc_high;
277 
278 static int
279 pci_alloc_io(pci_chipset_tag_t pc, pcitag_t pt, int pcioffs,
280     bus_space_tag_t iot, bus_size_t size, bus_size_t align,
281     bus_size_t bound, int flags, bus_space_handle_t *ioh)
282 {
283 	bus_addr_t addr;
284 	int error;
285 
286 	error = bus_space_alloc(iot, pci_io_alloc_low, pci_io_alloc_high,
287 				size, align, bound, flags, &addr, ioh);
288 	if (error)
289 		return error;
290 
291 	pci_conf_write(pc, pt, pcioffs, addr);
292 	return 0;
293 }
294 
295 /*
296  * Allocate IO addresses when all other configuration is done.
297  */
298 static void
299 sv_defer(device_t self)
300 {
301 	struct sv_softc *sc;
302 	pci_chipset_tag_t pc;
303 	pcitag_t pt;
304 	pcireg_t dmaio;
305 
306 	sc = device_private(self);
307 	pc = sc->sc_pa.pa_pc;
308 	pt = sc->sc_pa.pa_tag;
309 	DPRINTF(("sv_defer: %p\n", sc));
310 
311 	/* XXX
312 	 * Get a reasonable default for the I/O range.
313 	 * Assume the range around SB_PORTBASE is valid on this PCI bus.
314 	 */
315 	pci_io_alloc_low = pci_conf_read(pc, pt, SV_SB_PORTBASE_SLOT);
316 	pci_io_alloc_high = pci_io_alloc_low + 0x1000;
317 
318 	if (pci_alloc_io(pc, pt, SV_DMAA_CONFIG_OFF,
319 			  sc->sc_iot, SV_DMAA_SIZE, SV_DMAA_ALIGN, 0,
320 			  0, &sc->sc_dmaa_ioh)) {
321 		printf("sv_attach: cannot allocate DMA A range\n");
322 		return;
323 	}
324 	dmaio = pci_conf_read(pc, pt, SV_DMAA_CONFIG_OFF);
325 	DPRINTF(("sv_attach: addr a dmaio=0x%lx\n", (u_long)dmaio));
326 	pci_conf_write(pc, pt, SV_DMAA_CONFIG_OFF,
327 		       dmaio | SV_DMA_CHANNEL_ENABLE | SV_DMAA_EXTENDED_ADDR);
328 
329 	if (pci_alloc_io(pc, pt, SV_DMAC_CONFIG_OFF,
330 			  sc->sc_iot, SV_DMAC_SIZE, SV_DMAC_ALIGN, 0,
331 			  0, &sc->sc_dmac_ioh)) {
332 		printf("sv_attach: cannot allocate DMA C range\n");
333 		return;
334 	}
335 	dmaio = pci_conf_read(pc, pt, SV_DMAC_CONFIG_OFF);
336 	DPRINTF(("sv_attach: addr c dmaio=0x%lx\n", (u_long)dmaio));
337 	pci_conf_write(pc, pt, SV_DMAC_CONFIG_OFF,
338 		       dmaio | SV_DMA_CHANNEL_ENABLE);
339 
340 	sc->sc_dmaset = 1;
341 }
342 
343 static void
344 sv_attach(device_t parent, device_t self, void *aux)
345 {
346 	struct sv_softc *sc;
347 	struct pci_attach_args *pa;
348 	pci_chipset_tag_t pc;
349 	pcitag_t pt;
350 	pci_intr_handle_t ih;
351 	pcireg_t csr;
352 	char const *intrstr;
353 	uint8_t reg;
354 	struct audio_attach_args arg;
355 
356 	sc = device_private(self);
357 	pa = aux;
358 	pc = pa->pa_pc;
359 	pt = pa->pa_tag;
360 	printf ("\n");
361 
362 	/* Map I/O registers */
363 	if (pci_mapreg_map(pa, SV_ENHANCED_PORTBASE_SLOT,
364 			   PCI_MAPREG_TYPE_IO, 0,
365 			   &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) {
366 		aprint_error_dev(&sc->sc_dev, "can't map enhanced i/o space\n");
367 		return;
368 	}
369 	if (pci_mapreg_map(pa, SV_FM_PORTBASE_SLOT,
370 			   PCI_MAPREG_TYPE_IO, 0,
371 			   &sc->sc_opliot, &sc->sc_oplioh, NULL, NULL)) {
372 		aprint_error_dev(&sc->sc_dev, "can't map FM i/o space\n");
373 		return;
374 	}
375 	if (pci_mapreg_map(pa, SV_MIDI_PORTBASE_SLOT,
376 			   PCI_MAPREG_TYPE_IO, 0,
377 			   &sc->sc_midiiot, &sc->sc_midiioh, NULL, NULL)) {
378 		aprint_error_dev(&sc->sc_dev, "can't map MIDI i/o space\n");
379 		return;
380 	}
381 	DPRINTF(("sv: IO ports: enhanced=0x%x, OPL=0x%x, MIDI=0x%x\n",
382 		 (int)sc->sc_ioh, (int)sc->sc_oplioh, (int)sc->sc_midiioh));
383 
384 #if defined(alpha)
385 	/* XXX Force allocation through the SGMAP. */
386 	sc->sc_dmatag = alphabus_dma_get_tag(pa->pa_dmat, ALPHA_BUS_ISA);
387 #elif defined(i386) && NISA > 0
388 /* XXX
389  * The SonicVibes DMA is broken and only works on 24-bit addresses.
390  * As long as bus_dmamem_alloc_range() is missing we use the ISA
391  * DMA tag on i386.
392  */
393 	sc->sc_dmatag = &isa_bus_dma_tag;
394 #else
395 	sc->sc_dmatag = pa->pa_dmat;
396 #endif
397 
398 	pci_conf_write(pc, pt, SV_DMAA_CONFIG_OFF, SV_DMAA_EXTENDED_ADDR);
399 	pci_conf_write(pc, pt, SV_DMAC_CONFIG_OFF, 0);
400 
401 	/* Enable the device. */
402 	csr = pci_conf_read(pc, pt, PCI_COMMAND_STATUS_REG);
403 	pci_conf_write(pc, pt, PCI_COMMAND_STATUS_REG,
404 		       csr | PCI_COMMAND_MASTER_ENABLE);
405 
406 	sv_write_indirect(sc, SV_ANALOG_POWER_DOWN_CONTROL, 0);
407 	sv_write_indirect(sc, SV_DIGITAL_POWER_DOWN_CONTROL, 0);
408 
409 	/* initialize codec registers */
410 	reg = sv_read(sc, SV_CODEC_CONTROL);
411 	reg |= SV_CTL_RESET;
412 	sv_write(sc, SV_CODEC_CONTROL, reg);
413 	delay(50);
414 
415 	reg = sv_read(sc, SV_CODEC_CONTROL);
416 	reg &= ~SV_CTL_RESET;
417 	reg |= SV_CTL_INTA | SV_CTL_ENHANCED;
418 
419 	/* This write clears the reset */
420 	sv_write(sc, SV_CODEC_CONTROL, reg);
421 	delay(50);
422 
423 	/* This write actually shoves the new values in */
424 	sv_write(sc, SV_CODEC_CONTROL, reg);
425 
426 	DPRINTF(("sv_attach: control=0x%x\n", sv_read(sc, SV_CODEC_CONTROL)));
427 
428 	/* Enable DMA interrupts */
429 	reg = sv_read(sc, SV_CODEC_INTMASK);
430 	reg &= ~(SV_INTMASK_DMAA | SV_INTMASK_DMAC);
431 	reg |= SV_INTMASK_UD | SV_INTMASK_SINT | SV_INTMASK_MIDI;
432 	sv_write(sc, SV_CODEC_INTMASK, reg);
433 
434 	sv_read(sc, SV_CODEC_STATUS);
435 
436 	/* Map and establish the interrupt. */
437 	if (pci_intr_map(pa, &ih)) {
438 		aprint_error_dev(&sc->sc_dev, "couldn't map interrupt\n");
439 		return;
440 	}
441 	intrstr = pci_intr_string(pc, ih);
442 	sc->sc_ih = pci_intr_establish(pc, ih, IPL_AUDIO, sv_intr, sc);
443 	if (sc->sc_ih == NULL) {
444 		aprint_error_dev(&sc->sc_dev, "couldn't establish interrupt");
445 		if (intrstr != NULL)
446 			aprint_error(" at %s", intrstr);
447 		aprint_error("\n");
448 		return;
449 	}
450 	printf("%s: interrupting at %s\n", device_xname(&sc->sc_dev), intrstr);
451 	printf("%s: rev %d", device_xname(&sc->sc_dev),
452 	       sv_read_indirect(sc, SV_REVISION_LEVEL));
453 	if (sv_read(sc, SV_CODEC_CONTROL) & SV_CTL_MD1)
454 		printf(", reverb SRAM present");
455 	if (!(sv_read_indirect(sc, SV_WAVETABLE_SOURCE_SELECT) & SV_WSS_WT0))
456 		printf(", wavetable ROM present");
457 	printf("\n");
458 
459 	sv_init_mixer(sc);
460 
461 	audio_attach_mi(&sv_hw_if, sc, &sc->sc_dev);
462 
463 	arg.type = AUDIODEV_TYPE_OPL;
464 	arg.hwif = 0;
465 	arg.hdl = 0;
466 	(void)config_found(&sc->sc_dev, &arg, audioprint);
467 
468 	sc->sc_pa = *pa;	/* for deferred setup */
469 	config_defer(self, sv_defer);
470 }
471 
472 #ifdef AUDIO_DEBUG
473 void
474 sv_dumpregs(struct sv_softc *sc)
475 {
476 	int idx;
477 
478 #if 0
479 	for (idx = 0; idx < 0x50; idx += 4)
480 		printf ("%02x = %x\n", idx,
481 			pci_conf_read(pa->pa_pc, pa->pa_tag, idx));
482 #endif
483 
484 	for (idx = 0; idx < 6; idx++)
485 		printf ("REG %02x = %02x\n", idx, sv_read(sc, idx));
486 
487 	for (idx = 0; idx < 0x32; idx++)
488 		printf ("IREG %02x = %02x\n", idx, sv_read_indirect(sc, idx));
489 
490 	for (idx = 0; idx < 0x10; idx++)
491 		printf ("DMA %02x = %02x\n", idx,
492 			bus_space_read_1(sc->sc_iot, sc->sc_dmaa_ioh, idx));
493 }
494 #endif
495 
496 static int
497 sv_intr(void *p)
498 {
499 	struct sv_softc *sc;
500 	uint8_t intr;
501 
502 	sc = p;
503 	intr = sv_read(sc, SV_CODEC_STATUS);
504 	DPRINTFN(5,("sv_intr: intr=0x%x\n", intr));
505 
506 	if (!(intr & (SV_INTSTATUS_DMAA | SV_INTSTATUS_DMAC)))
507 		return 0;
508 
509 	if (intr & SV_INTSTATUS_DMAA) {
510 		if (sc->sc_pintr)
511 			sc->sc_pintr(sc->sc_parg);
512 	}
513 
514 	if (intr & SV_INTSTATUS_DMAC) {
515 		if (sc->sc_rintr)
516 			sc->sc_rintr(sc->sc_rarg);
517 	}
518 
519 	return 1;
520 }
521 
522 static int
523 sv_allocmem(struct sv_softc *sc, size_t size, size_t align,
524     int direction, struct sv_dma *p)
525 {
526 	int error;
527 
528 	p->size = size;
529 	error = bus_dmamem_alloc(sc->sc_dmatag, p->size, align, 0,
530 	    p->segs, ARRAY_SIZE(p->segs), &p->nsegs, BUS_DMA_NOWAIT);
531 	if (error)
532 		return error;
533 
534 	error = bus_dmamem_map(sc->sc_dmatag, p->segs, p->nsegs, p->size,
535 	    &p->addr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
536 	if (error)
537 		goto free;
538 
539 	error = bus_dmamap_create(sc->sc_dmatag, p->size, 1, p->size,
540 	    0, BUS_DMA_NOWAIT, &p->map);
541 	if (error)
542 		goto unmap;
543 
544 	error = bus_dmamap_load(sc->sc_dmatag, p->map, p->addr, p->size, NULL,
545 	    BUS_DMA_NOWAIT | (direction == AUMODE_RECORD) ? BUS_DMA_READ : BUS_DMA_WRITE);
546 	if (error)
547 		goto destroy;
548 	DPRINTF(("sv_allocmem: pa=%lx va=%lx pba=%lx\n",
549 	    (long)p->segs[0].ds_addr, (long)KERNADDR(p), (long)DMAADDR(p)));
550 	return 0;
551 
552 destroy:
553 	bus_dmamap_destroy(sc->sc_dmatag, p->map);
554 unmap:
555 	bus_dmamem_unmap(sc->sc_dmatag, p->addr, p->size);
556 free:
557 	bus_dmamem_free(sc->sc_dmatag, p->segs, p->nsegs);
558 	return error;
559 }
560 
561 static int
562 sv_freemem(struct sv_softc *sc, struct sv_dma *p)
563 {
564 
565 	bus_dmamap_unload(sc->sc_dmatag, p->map);
566 	bus_dmamap_destroy(sc->sc_dmatag, p->map);
567 	bus_dmamem_unmap(sc->sc_dmatag, p->addr, p->size);
568 	bus_dmamem_free(sc->sc_dmatag, p->segs, p->nsegs);
569 	return 0;
570 }
571 
572 static int
573 sv_open(void *addr, int flags)
574 {
575 	struct sv_softc *sc;
576 
577 	sc = addr;
578 	DPRINTF(("sv_open\n"));
579 	if (!sc->sc_dmaset)
580 		return ENXIO;
581 
582 	return 0;
583 }
584 
585 static int
586 sv_query_encoding(void *addr, struct audio_encoding *fp)
587 {
588 
589 	switch (fp->index) {
590 	case 0:
591 		strcpy(fp->name, AudioEulinear);
592 		fp->encoding = AUDIO_ENCODING_ULINEAR;
593 		fp->precision = 8;
594 		fp->flags = 0;
595 		return 0;
596 	case 1:
597 		strcpy(fp->name, AudioEmulaw);
598 		fp->encoding = AUDIO_ENCODING_ULAW;
599 		fp->precision = 8;
600 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
601 		return 0;
602 	case 2:
603 		strcpy(fp->name, AudioEalaw);
604 		fp->encoding = AUDIO_ENCODING_ALAW;
605 		fp->precision = 8;
606 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
607 		return 0;
608 	case 3:
609 		strcpy(fp->name, AudioEslinear);
610 		fp->encoding = AUDIO_ENCODING_SLINEAR;
611 		fp->precision = 8;
612 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
613 		return 0;
614 	case 4:
615 		strcpy(fp->name, AudioEslinear_le);
616 		fp->encoding = AUDIO_ENCODING_SLINEAR_LE;
617 		fp->precision = 16;
618 		fp->flags = 0;
619 		return 0;
620 	case 5:
621 		strcpy(fp->name, AudioEulinear_le);
622 		fp->encoding = AUDIO_ENCODING_ULINEAR_LE;
623 		fp->precision = 16;
624 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
625 		return 0;
626 	case 6:
627 		strcpy(fp->name, AudioEslinear_be);
628 		fp->encoding = AUDIO_ENCODING_SLINEAR_BE;
629 		fp->precision = 16;
630 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
631 		return 0;
632 	case 7:
633 		strcpy(fp->name, AudioEulinear_be);
634 		fp->encoding = AUDIO_ENCODING_ULINEAR_BE;
635 		fp->precision = 16;
636 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
637 		return 0;
638 	default:
639 		return EINVAL;
640 	}
641 }
642 
643 static int
644 sv_set_params(void *addr, int setmode, int usemode, audio_params_t *play,
645     audio_params_t *rec, stream_filter_list_t *pfil, stream_filter_list_t *rfil)
646 {
647 	struct sv_softc *sc;
648 	audio_params_t *p;
649 	uint32_t val;
650 
651 	sc = addr;
652 	p = NULL;
653 	/*
654 	 * This device only has one clock, so make the sample rates match.
655 	 */
656 	if (play->sample_rate != rec->sample_rate &&
657 	    usemode == (AUMODE_PLAY | AUMODE_RECORD)) {
658 		if (setmode == AUMODE_PLAY) {
659 			rec->sample_rate = play->sample_rate;
660 			setmode |= AUMODE_RECORD;
661 		} else if (setmode == AUMODE_RECORD) {
662 			play->sample_rate = rec->sample_rate;
663 			setmode |= AUMODE_PLAY;
664 		} else
665 			return EINVAL;
666 	}
667 
668 	if (setmode & AUMODE_RECORD) {
669 		p = rec;
670 		if (auconv_set_converter(sv_formats, SV_NFORMATS,
671 					 AUMODE_RECORD, rec, FALSE, rfil) < 0)
672 			return EINVAL;
673 	}
674 	if (setmode & AUMODE_PLAY) {
675 		p = play;
676 		if (auconv_set_converter(sv_formats, SV_NFORMATS,
677 					 AUMODE_PLAY, play, FALSE, pfil) < 0)
678 			return EINVAL;
679 	}
680 
681 	if (p == NULL)
682 		return 0;
683 
684 	val = p->sample_rate * 65536 / 48000;
685 	/*
686 	 * If the sample rate is exactly 48 kHz, the fraction would overflow the
687 	 * register, so we have to bias it.  This causes a little clock drift.
688 	 * The drift is below normal crystal tolerance (.0001%), so although
689 	 * this seems a little silly, we can pretty much ignore it.
690 	 * (I tested the output speed with values of 1-20, just to be sure this
691 	 * register isn't *supposed* to have a bias.  It isn't.)
692 	 * - mycroft
693 	 */
694 	if (val > 65535)
695 		val = 65535;
696 
697 	sv_write_indirect(sc, SV_PCM_SAMPLE_RATE_0, val & 0xff);
698 	sv_write_indirect(sc, SV_PCM_SAMPLE_RATE_1, val >> 8);
699 
700 #define F_REF 24576000
701 
702 #define ABS(x) (((x) < 0) ? (-x) : (x))
703 
704 	if (setmode & AUMODE_RECORD) {
705 		/* The ADC reference frequency (f_out) is 512 * sample rate */
706 
707 		/* f_out is dervied from the 24.576MHz crystal by three values:
708 		   M & N & R. The equation is as follows:
709 
710 		   f_out = (m + 2) * f_ref / ((n + 2) * (2 ^ a))
711 
712 		   with the constraint that:
713 
714 		   80 MHz < (m + 2) / (n + 2) * f_ref <= 150MHz
715 		   and n, m >= 1
716 		*/
717 
718 		int  goal_f_out;
719 		int  a, n, m, best_n, best_m, best_error;
720 		int  pll_sample;
721 		int  error;
722 
723 		goal_f_out = 512 * rec->sample_rate;
724 		best_n = 0;
725 		best_m = 0;
726 		best_error = 10000000;
727 		for (a = 0; a < 8; a++) {
728 			if ((goal_f_out * (1 << a)) >= 80000000)
729 				break;
730 		}
731 
732 		/* a != 8 because sample_rate >= 2000 */
733 
734 		for (n = 33; n > 2; n--) {
735 			m = (goal_f_out * n * (1 << a)) / F_REF;
736 			if ((m > 257) || (m < 3))
737 				continue;
738 
739 			pll_sample = (m * F_REF) / (n * (1 << a));
740 			pll_sample /= 512;
741 
742 			/* Threshold might be good here */
743 			error = pll_sample - rec->sample_rate;
744 			error = ABS(error);
745 
746 			if (error < best_error) {
747 				best_error = error;
748 				best_n = n;
749 				best_m = m;
750 				if (error == 0) break;
751 			}
752 		}
753 
754 		best_n -= 2;
755 		best_m -= 2;
756 
757 		sv_write_indirect(sc, SV_ADC_PLL_M, best_m);
758 		sv_write_indirect(sc, SV_ADC_PLL_N,
759 				  best_n | (a << SV_PLL_R_SHIFT));
760 	}
761 
762 	return 0;
763 }
764 
765 static int
766 sv_round_blocksize(void *addr, int blk, int mode,
767     const audio_params_t *param)
768 {
769 
770 	return blk & -32;	/* keep good alignment */
771 }
772 
773 static int
774 sv_trigger_output(void *addr, void *start, void *end, int blksize,
775     void (*intr)(void *), void *arg, const audio_params_t *param)
776 {
777 	struct sv_softc *sc;
778 	struct sv_dma *p;
779 	uint8_t mode;
780 	int dma_count;
781 
782 	DPRINTFN(1, ("sv_trigger_output: sc=%p start=%p end=%p blksize=%d "
783 	    "intr=%p(%p)\n", addr, start, end, blksize, intr, arg));
784 	sc = addr;
785 	sc->sc_pintr = intr;
786 	sc->sc_parg = arg;
787 
788 	mode = sv_read_indirect(sc, SV_DMA_DATA_FORMAT);
789 	mode &= ~(SV_DMAA_FORMAT16 | SV_DMAA_STEREO);
790 	if (param->precision == 16)
791 		mode |= SV_DMAA_FORMAT16;
792 	if (param->channels == 2)
793 		mode |= SV_DMAA_STEREO;
794 	sv_write_indirect(sc, SV_DMA_DATA_FORMAT, mode);
795 
796 	for (p = sc->sc_dmas; p && KERNADDR(p) != start; p = p->next)
797 		continue;
798 	if (p == NULL) {
799 		printf("sv_trigger_output: bad addr %p\n", start);
800 		return EINVAL;
801 	}
802 
803 	dma_count = ((char *)end - (char *)start) - 1;
804 	DPRINTF(("sv_trigger_output: DMA start loop input addr=%x cc=%d\n",
805 	    (int)DMAADDR(p), dma_count));
806 
807 	bus_space_write_4(sc->sc_iot, sc->sc_dmaa_ioh, SV_DMA_ADDR0,
808 			  DMAADDR(p));
809 	bus_space_write_4(sc->sc_iot, sc->sc_dmaa_ioh, SV_DMA_COUNT0,
810 			  dma_count);
811 	bus_space_write_1(sc->sc_iot, sc->sc_dmaa_ioh, SV_DMA_MODE,
812 			  DMA37MD_READ | DMA37MD_LOOP);
813 
814 	DPRINTF(("sv_trigger_output: current addr=%x\n",
815 	    bus_space_read_4(sc->sc_iot, sc->sc_dmaa_ioh, SV_DMA_ADDR0)));
816 
817 	dma_count = blksize - 1;
818 
819 	sv_write_indirect(sc, SV_DMAA_COUNT1, dma_count >> 8);
820 	sv_write_indirect(sc, SV_DMAA_COUNT0, dma_count & 0xFF);
821 
822 	mode = sv_read_indirect(sc, SV_PLAY_RECORD_ENABLE);
823 	sv_write_indirect(sc, SV_PLAY_RECORD_ENABLE, mode | SV_PLAY_ENABLE);
824 
825 	return 0;
826 }
827 
828 static int
829 sv_trigger_input(void *addr, void *start, void *end, int blksize,
830     void (*intr)(void *), void *arg, const audio_params_t *param)
831 {
832 	struct sv_softc *sc;
833 	struct sv_dma *p;
834 	uint8_t mode;
835 	int dma_count;
836 
837 	DPRINTFN(1, ("sv_trigger_input: sc=%p start=%p end=%p blksize=%d "
838 	    "intr=%p(%p)\n", addr, start, end, blksize, intr, arg));
839 	sc = addr;
840 	sc->sc_rintr = intr;
841 	sc->sc_rarg = arg;
842 
843 	mode = sv_read_indirect(sc, SV_DMA_DATA_FORMAT);
844 	mode &= ~(SV_DMAC_FORMAT16 | SV_DMAC_STEREO);
845 	if (param->precision == 16)
846 		mode |= SV_DMAC_FORMAT16;
847 	if (param->channels == 2)
848 		mode |= SV_DMAC_STEREO;
849 	sv_write_indirect(sc, SV_DMA_DATA_FORMAT, mode);
850 
851 	for (p = sc->sc_dmas; p && KERNADDR(p) != start; p = p->next)
852 		continue;
853 	if (!p) {
854 		printf("sv_trigger_input: bad addr %p\n", start);
855 		return EINVAL;
856 	}
857 
858 	dma_count = (((char *)end - (char *)start) >> 1) - 1;
859 	DPRINTF(("sv_trigger_input: DMA start loop input addr=%x cc=%d\n",
860 	    (int)DMAADDR(p), dma_count));
861 
862 	bus_space_write_4(sc->sc_iot, sc->sc_dmac_ioh, SV_DMA_ADDR0,
863 			  DMAADDR(p));
864 	bus_space_write_4(sc->sc_iot, sc->sc_dmac_ioh, SV_DMA_COUNT0,
865 			  dma_count);
866 	bus_space_write_1(sc->sc_iot, sc->sc_dmac_ioh, SV_DMA_MODE,
867 			  DMA37MD_WRITE | DMA37MD_LOOP);
868 
869 	DPRINTF(("sv_trigger_input: current addr=%x\n",
870 	    bus_space_read_4(sc->sc_iot, sc->sc_dmac_ioh, SV_DMA_ADDR0)));
871 
872 	dma_count = (blksize >> 1) - 1;
873 
874 	sv_write_indirect(sc, SV_DMAC_COUNT1, dma_count >> 8);
875 	sv_write_indirect(sc, SV_DMAC_COUNT0, dma_count & 0xFF);
876 
877 	mode = sv_read_indirect(sc, SV_PLAY_RECORD_ENABLE);
878 	sv_write_indirect(sc, SV_PLAY_RECORD_ENABLE, mode | SV_RECORD_ENABLE);
879 
880 	return 0;
881 }
882 
883 static int
884 sv_halt_output(void *addr)
885 {
886 	struct sv_softc *sc;
887 	uint8_t mode;
888 
889 	DPRINTF(("sv: sv_halt_output\n"));
890 	sc = addr;
891 	mode = sv_read_indirect(sc, SV_PLAY_RECORD_ENABLE);
892 	sv_write_indirect(sc, SV_PLAY_RECORD_ENABLE, mode & ~SV_PLAY_ENABLE);
893 	sc->sc_pintr = 0;
894 
895 	return 0;
896 }
897 
898 static int
899 sv_halt_input(void *addr)
900 {
901 	struct sv_softc *sc;
902 	uint8_t mode;
903 
904 	DPRINTF(("sv: sv_halt_input\n"));
905 	sc = addr;
906 	mode = sv_read_indirect(sc, SV_PLAY_RECORD_ENABLE);
907 	sv_write_indirect(sc, SV_PLAY_RECORD_ENABLE, mode & ~SV_RECORD_ENABLE);
908 	sc->sc_rintr = 0;
909 
910 	return 0;
911 }
912 
913 static int
914 sv_getdev(void *addr, struct audio_device *retp)
915 {
916 
917 	*retp = sv_device;
918 	return 0;
919 }
920 
921 
922 /*
923  * Mixer related code is here
924  *
925  */
926 
927 #define SV_INPUT_CLASS 0
928 #define SV_OUTPUT_CLASS 1
929 #define SV_RECORD_CLASS 2
930 
931 #define SV_LAST_CLASS 2
932 
933 static const char *mixer_classes[] =
934 	{ AudioCinputs, AudioCoutputs, AudioCrecord };
935 
936 static const struct {
937 	uint8_t   l_port;
938 	uint8_t   r_port;
939 	uint8_t   mask;
940 	uint8_t   class;
941 	const char *audio;
942 } ports[] = {
943   { SV_LEFT_AUX1_INPUT_CONTROL, SV_RIGHT_AUX1_INPUT_CONTROL, SV_AUX1_MASK,
944     SV_INPUT_CLASS, "aux1" },
945   { SV_LEFT_CD_INPUT_CONTROL, SV_RIGHT_CD_INPUT_CONTROL, SV_CD_MASK,
946     SV_INPUT_CLASS, AudioNcd },
947   { SV_LEFT_LINE_IN_INPUT_CONTROL, SV_RIGHT_LINE_IN_INPUT_CONTROL, SV_LINE_IN_MASK,
948     SV_INPUT_CLASS, AudioNline },
949   { SV_MIC_INPUT_CONTROL, 0, SV_MIC_MASK, SV_INPUT_CLASS, AudioNmicrophone },
950   { SV_LEFT_SYNTH_INPUT_CONTROL, SV_RIGHT_SYNTH_INPUT_CONTROL,
951     SV_SYNTH_MASK, SV_INPUT_CLASS, AudioNfmsynth },
952   { SV_LEFT_AUX2_INPUT_CONTROL, SV_RIGHT_AUX2_INPUT_CONTROL, SV_AUX2_MASK,
953     SV_INPUT_CLASS, "aux2" },
954   { SV_LEFT_PCM_INPUT_CONTROL, SV_RIGHT_PCM_INPUT_CONTROL, SV_PCM_MASK,
955     SV_INPUT_CLASS, AudioNdac },
956   { SV_LEFT_MIXER_OUTPUT_CONTROL, SV_RIGHT_MIXER_OUTPUT_CONTROL,
957     SV_MIXER_OUT_MASK, SV_OUTPUT_CLASS, AudioNmaster }
958 };
959 
960 
961 static const struct {
962 	int idx;
963 	const char *name;
964 } record_sources[] = {
965 	{ SV_REC_CD, AudioNcd },
966 	{ SV_REC_DAC, AudioNdac },
967 	{ SV_REC_AUX2, "aux2" },
968 	{ SV_REC_LINE, AudioNline },
969 	{ SV_REC_AUX1, "aux1" },
970 	{ SV_REC_MIC, AudioNmicrophone },
971 	{ SV_REC_MIXER, AudioNmixerout }
972 };
973 
974 
975 #define SV_DEVICES_PER_PORT 2
976 #define SV_FIRST_MIXER (SV_LAST_CLASS + 1)
977 #define SV_LAST_MIXER (SV_DEVICES_PER_PORT * (ARRAY_SIZE(ports)) + SV_LAST_CLASS)
978 #define SV_RECORD_SOURCE (SV_LAST_MIXER + 1)
979 #define SV_MIC_BOOST (SV_LAST_MIXER + 2)
980 #define SV_RECORD_GAIN (SV_LAST_MIXER + 3)
981 #define SV_SRS_MODE (SV_LAST_MIXER + 4)
982 
983 static int
984 sv_query_devinfo(void *addr, mixer_devinfo_t *dip)
985 {
986 	int i;
987 
988 	/* It's a class */
989 	if (dip->index <= SV_LAST_CLASS) {
990 		dip->type = AUDIO_MIXER_CLASS;
991 		dip->mixer_class = dip->index;
992 		dip->next = dip->prev = AUDIO_MIXER_LAST;
993 		strcpy(dip->label.name, mixer_classes[dip->index]);
994 		return 0;
995 	}
996 
997 	if (dip->index >= SV_FIRST_MIXER &&
998 	    dip->index <= SV_LAST_MIXER) {
999 		int off, mute ,idx;
1000 
1001 		off = dip->index - SV_FIRST_MIXER;
1002 		mute = (off % SV_DEVICES_PER_PORT);
1003 		idx = off / SV_DEVICES_PER_PORT;
1004 		dip->mixer_class = ports[idx].class;
1005 		strcpy(dip->label.name, ports[idx].audio);
1006 
1007 		if (!mute) {
1008 			dip->type = AUDIO_MIXER_VALUE;
1009 			dip->prev = AUDIO_MIXER_LAST;
1010 			dip->next = dip->index + 1;
1011 
1012 			if (ports[idx].r_port != 0)
1013 				dip->un.v.num_channels = 2;
1014 			else
1015 				dip->un.v.num_channels = 1;
1016 
1017 			strcpy(dip->un.v.units.name, AudioNvolume);
1018 		} else {
1019 			dip->type = AUDIO_MIXER_ENUM;
1020 			dip->prev = dip->index - 1;
1021 			dip->next = AUDIO_MIXER_LAST;
1022 
1023 			strcpy(dip->label.name, AudioNmute);
1024 			dip->un.e.num_mem = 2;
1025 			strcpy(dip->un.e.member[0].label.name, AudioNoff);
1026 			dip->un.e.member[0].ord = 0;
1027 			strcpy(dip->un.e.member[1].label.name, AudioNon);
1028 			dip->un.e.member[1].ord = 1;
1029 		}
1030 
1031 		return 0;
1032 	}
1033 
1034 	switch (dip->index) {
1035 	case SV_RECORD_SOURCE:
1036 		dip->mixer_class = SV_RECORD_CLASS;
1037 		dip->prev = AUDIO_MIXER_LAST;
1038 		dip->next = SV_RECORD_GAIN;
1039 		strcpy(dip->label.name, AudioNsource);
1040 		dip->type = AUDIO_MIXER_ENUM;
1041 
1042 		dip->un.e.num_mem = ARRAY_SIZE(record_sources);
1043 		for (i = 0; i < ARRAY_SIZE(record_sources); i++) {
1044 			strcpy(dip->un.e.member[i].label.name,
1045 			       record_sources[i].name);
1046 			dip->un.e.member[i].ord = record_sources[i].idx;
1047 		}
1048 		return 0;
1049 
1050 	case SV_RECORD_GAIN:
1051 		dip->mixer_class = SV_RECORD_CLASS;
1052 		dip->prev = SV_RECORD_SOURCE;
1053 		dip->next = AUDIO_MIXER_LAST;
1054 		strcpy(dip->label.name, "gain");
1055 		dip->type = AUDIO_MIXER_VALUE;
1056 		dip->un.v.num_channels = 1;
1057 		strcpy(dip->un.v.units.name, AudioNvolume);
1058 		return 0;
1059 
1060 	case SV_MIC_BOOST:
1061 		dip->mixer_class = SV_RECORD_CLASS;
1062 		dip->prev = AUDIO_MIXER_LAST;
1063 		dip->next = AUDIO_MIXER_LAST;
1064 		strcpy(dip->label.name, "micboost");
1065 		goto on_off;
1066 
1067 	case SV_SRS_MODE:
1068 		dip->mixer_class = SV_OUTPUT_CLASS;
1069 		dip->prev = dip->next = AUDIO_MIXER_LAST;
1070 		strcpy(dip->label.name, AudioNspatial);
1071 
1072 	on_off:
1073 		dip->type = AUDIO_MIXER_ENUM;
1074 		dip->un.e.num_mem = 2;
1075 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
1076 		dip->un.e.member[0].ord = 0;
1077 		strcpy(dip->un.e.member[1].label.name, AudioNon);
1078 		dip->un.e.member[1].ord = 1;
1079 		return 0;
1080 	}
1081 
1082 	return ENXIO;
1083 }
1084 
1085 static int
1086 sv_mixer_set_port(void *addr, mixer_ctrl_t *cp)
1087 {
1088 	struct sv_softc *sc;
1089 	uint8_t reg;
1090 	int idx;
1091 
1092 	sc = addr;
1093 	if (cp->dev >= SV_FIRST_MIXER &&
1094 	    cp->dev <= SV_LAST_MIXER) {
1095 		int off, mute;
1096 
1097 		off = cp->dev - SV_FIRST_MIXER;
1098 		mute = (off % SV_DEVICES_PER_PORT);
1099 		idx = off / SV_DEVICES_PER_PORT;
1100 
1101 		if (mute) {
1102 			if (cp->type != AUDIO_MIXER_ENUM)
1103 				return EINVAL;
1104 
1105 			reg = sv_read_indirect(sc, ports[idx].l_port);
1106 			if (cp->un.ord)
1107 				reg |= SV_MUTE_BIT;
1108 			else
1109 				reg &= ~SV_MUTE_BIT;
1110 			sv_write_indirect(sc, ports[idx].l_port, reg);
1111 
1112 			if (ports[idx].r_port) {
1113 				reg = sv_read_indirect(sc, ports[idx].r_port);
1114 				if (cp->un.ord)
1115 					reg |= SV_MUTE_BIT;
1116 				else
1117 					reg &= ~SV_MUTE_BIT;
1118 				sv_write_indirect(sc, ports[idx].r_port, reg);
1119 			}
1120 		} else {
1121 			int  lval, rval;
1122 
1123 			if (cp->type != AUDIO_MIXER_VALUE)
1124 				return EINVAL;
1125 
1126 			if (cp->un.value.num_channels != 1 &&
1127 			    cp->un.value.num_channels != 2)
1128 				return (EINVAL);
1129 
1130 			if (ports[idx].r_port == 0) {
1131 				if (cp->un.value.num_channels != 1)
1132 					return (EINVAL);
1133 				lval = cp->un.value.level[AUDIO_MIXER_LEVEL_MONO];
1134 				rval = 0; /* shut up GCC */
1135 			} else {
1136 				if (cp->un.value.num_channels != 2)
1137 					return (EINVAL);
1138 
1139 				lval = cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT];
1140 				rval = cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT];
1141 			}
1142 
1143 
1144 			reg = sv_read_indirect(sc, ports[idx].l_port);
1145 			reg &= ~(ports[idx].mask);
1146 			lval = (AUDIO_MAX_GAIN - lval) * ports[idx].mask /
1147 				AUDIO_MAX_GAIN;
1148 			reg |= lval;
1149 			sv_write_indirect(sc, ports[idx].l_port, reg);
1150 
1151 			if (ports[idx].r_port != 0) {
1152 				reg = sv_read_indirect(sc, ports[idx].r_port);
1153 				reg &= ~(ports[idx].mask);
1154 
1155 				rval = (AUDIO_MAX_GAIN - rval) * ports[idx].mask /
1156 					AUDIO_MAX_GAIN;
1157 				reg |= rval;
1158 
1159 				sv_write_indirect(sc, ports[idx].r_port, reg);
1160 			}
1161 
1162 			sv_read_indirect(sc, ports[idx].l_port);
1163 		}
1164 
1165 		return 0;
1166 	}
1167 
1168 
1169 	switch (cp->dev) {
1170 	case SV_RECORD_SOURCE:
1171 		if (cp->type != AUDIO_MIXER_ENUM)
1172 			return EINVAL;
1173 
1174 		for (idx = 0; idx < ARRAY_SIZE(record_sources); idx++) {
1175 			if (record_sources[idx].idx == cp->un.ord)
1176 				goto found;
1177 		}
1178 
1179 		return EINVAL;
1180 
1181 	found:
1182 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL);
1183 		reg &= ~SV_REC_SOURCE_MASK;
1184 		reg |= (((cp->un.ord) << SV_REC_SOURCE_SHIFT) & SV_REC_SOURCE_MASK);
1185 		sv_write_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL, reg);
1186 
1187 		reg = sv_read_indirect(sc, SV_RIGHT_ADC_INPUT_CONTROL);
1188 		reg &= ~SV_REC_SOURCE_MASK;
1189 		reg |= (((cp->un.ord) << SV_REC_SOURCE_SHIFT) & SV_REC_SOURCE_MASK);
1190 		sv_write_indirect(sc, SV_RIGHT_ADC_INPUT_CONTROL, reg);
1191 		return 0;
1192 
1193 	case SV_RECORD_GAIN:
1194 	{
1195 		int val;
1196 
1197 		if (cp->type != AUDIO_MIXER_VALUE)
1198 			return EINVAL;
1199 
1200 		if (cp->un.value.num_channels != 1)
1201 			return EINVAL;
1202 
1203 		val = (cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]
1204 		    * SV_REC_GAIN_MASK) / AUDIO_MAX_GAIN;
1205 
1206 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL);
1207 		reg &= ~SV_REC_GAIN_MASK;
1208 		reg |= val;
1209 		sv_write_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL, reg);
1210 
1211 		reg = sv_read_indirect(sc, SV_RIGHT_ADC_INPUT_CONTROL);
1212 		reg &= ~SV_REC_GAIN_MASK;
1213 		reg |= val;
1214 		sv_write_indirect(sc, SV_RIGHT_ADC_INPUT_CONTROL, reg);
1215 	}
1216 	return (0);
1217 
1218 	case SV_MIC_BOOST:
1219 		if (cp->type != AUDIO_MIXER_ENUM)
1220 			return EINVAL;
1221 
1222 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL);
1223 		if (cp->un.ord) {
1224 			reg |= SV_MIC_BOOST_BIT;
1225 		} else {
1226 			reg &= ~SV_MIC_BOOST_BIT;
1227 		}
1228 
1229 		sv_write_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL, reg);
1230 		return 0;
1231 
1232 	case SV_SRS_MODE:
1233 		if (cp->type != AUDIO_MIXER_ENUM)
1234 			return EINVAL;
1235 
1236 		reg = sv_read_indirect(sc, SV_SRS_SPACE_CONTROL);
1237 		if (cp->un.ord) {
1238 			reg &= ~SV_SRS_SPACE_ONOFF;
1239 		} else {
1240 			reg |= SV_SRS_SPACE_ONOFF;
1241 		}
1242 
1243 		sv_write_indirect(sc, SV_SRS_SPACE_CONTROL, reg);
1244 		return 0;
1245 	}
1246 
1247 	return EINVAL;
1248 }
1249 
1250 static int
1251 sv_mixer_get_port(void *addr, mixer_ctrl_t *cp)
1252 {
1253 	struct sv_softc *sc;
1254 	int val;
1255 	uint8_t reg;
1256 
1257 	sc = addr;
1258 	if (cp->dev >= SV_FIRST_MIXER &&
1259 	    cp->dev <= SV_LAST_MIXER) {
1260 		int off = cp->dev - SV_FIRST_MIXER;
1261 		int mute = (off % 2);
1262 		int idx = off / 2;
1263 
1264 		off = cp->dev - SV_FIRST_MIXER;
1265 		mute = (off % 2);
1266 		idx = off / 2;
1267 		if (mute) {
1268 			if (cp->type != AUDIO_MIXER_ENUM)
1269 				return EINVAL;
1270 
1271 			reg = sv_read_indirect(sc, ports[idx].l_port);
1272 			cp->un.ord = ((reg & SV_MUTE_BIT) ? 1 : 0);
1273 		} else {
1274 			if (cp->type != AUDIO_MIXER_VALUE)
1275 				return EINVAL;
1276 
1277 			if (cp->un.value.num_channels != 1 &&
1278 			    cp->un.value.num_channels != 2)
1279 				return EINVAL;
1280 
1281 			if ((ports[idx].r_port == 0 &&
1282 			     cp->un.value.num_channels != 1) ||
1283 			    (ports[idx].r_port != 0 &&
1284 			     cp->un.value.num_channels != 2))
1285 				return EINVAL;
1286 
1287 			reg = sv_read_indirect(sc, ports[idx].l_port);
1288 			reg &= ports[idx].mask;
1289 
1290 			val = AUDIO_MAX_GAIN - ((reg * AUDIO_MAX_GAIN) / ports[idx].mask);
1291 
1292 			if (ports[idx].r_port != 0) {
1293 				cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT] = val;
1294 
1295 				reg = sv_read_indirect(sc, ports[idx].r_port);
1296 				reg &= ports[idx].mask;
1297 
1298 				val = AUDIO_MAX_GAIN - ((reg * AUDIO_MAX_GAIN)
1299 				    / ports[idx].mask);
1300 				cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = val;
1301 			} else
1302 				cp->un.value.level[AUDIO_MIXER_LEVEL_MONO] = val;
1303 		}
1304 
1305 		return 0;
1306 	}
1307 
1308 	switch (cp->dev) {
1309 	case SV_RECORD_SOURCE:
1310 		if (cp->type != AUDIO_MIXER_ENUM)
1311 			return EINVAL;
1312 
1313 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL);
1314 		cp->un.ord = ((reg & SV_REC_SOURCE_MASK) >> SV_REC_SOURCE_SHIFT);
1315 
1316 		return 0;
1317 
1318 	case SV_RECORD_GAIN:
1319 		if (cp->type != AUDIO_MIXER_VALUE)
1320 			return EINVAL;
1321 		if (cp->un.value.num_channels != 1)
1322 			return EINVAL;
1323 
1324 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL) & SV_REC_GAIN_MASK;
1325 		cp->un.value.level[AUDIO_MIXER_LEVEL_MONO] =
1326 			(((unsigned int)reg) * AUDIO_MAX_GAIN) / SV_REC_GAIN_MASK;
1327 
1328 		return 0;
1329 
1330 	case SV_MIC_BOOST:
1331 		if (cp->type != AUDIO_MIXER_ENUM)
1332 			return EINVAL;
1333 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL);
1334 		cp->un.ord = ((reg & SV_MIC_BOOST_BIT) ? 1 : 0);
1335 		return 0;
1336 
1337 	case SV_SRS_MODE:
1338 		if (cp->type != AUDIO_MIXER_ENUM)
1339 			return EINVAL;
1340 		reg = sv_read_indirect(sc, SV_SRS_SPACE_CONTROL);
1341 		cp->un.ord = ((reg & SV_SRS_SPACE_ONOFF) ? 0 : 1);
1342 		return 0;
1343 	}
1344 
1345 	return EINVAL;
1346 }
1347 
1348 static void
1349 sv_init_mixer(struct sv_softc *sc)
1350 {
1351 	mixer_ctrl_t cp;
1352 	int i;
1353 
1354 	cp.type = AUDIO_MIXER_ENUM;
1355 	cp.dev = SV_SRS_MODE;
1356 	cp.un.ord = 0;
1357 
1358 	sv_mixer_set_port(sc, &cp);
1359 
1360 	for (i = 0; i < ARRAY_SIZE(ports); i++) {
1361 		if (!strcmp(ports[i].audio, AudioNdac)) {
1362 			cp.type = AUDIO_MIXER_ENUM;
1363 			cp.dev = SV_FIRST_MIXER + i * SV_DEVICES_PER_PORT + 1;
1364 			cp.un.ord = 0;
1365 			sv_mixer_set_port(sc, &cp);
1366 			break;
1367 		}
1368 	}
1369 }
1370 
1371 static void *
1372 sv_malloc(void *addr, int direction, size_t size,
1373     struct malloc_type *pool, int flags)
1374 {
1375 	struct sv_softc *sc;
1376 	struct sv_dma *p;
1377 	int error;
1378 
1379 	sc = addr;
1380 	p = malloc(sizeof(*p), pool, flags);
1381 	if (p == NULL)
1382 		return NULL;
1383 	error = sv_allocmem(sc, size, 16, direction, p);
1384 	if (error) {
1385 		free(p, pool);
1386 		return 0;
1387 	}
1388 	p->next = sc->sc_dmas;
1389 	sc->sc_dmas = p;
1390 	return KERNADDR(p);
1391 }
1392 
1393 static void
1394 sv_free(void *addr, void *ptr, struct malloc_type *pool)
1395 {
1396 	struct sv_softc *sc;
1397 	struct sv_dma **pp, *p;
1398 
1399 	sc = addr;
1400 	for (pp = &sc->sc_dmas; (p = *pp) != NULL; pp = &p->next) {
1401 		if (KERNADDR(p) == ptr) {
1402 			sv_freemem(sc, p);
1403 			*pp = p->next;
1404 			free(p, pool);
1405 			return;
1406 		}
1407 	}
1408 }
1409 
1410 static size_t
1411 sv_round_buffersize(void *addr, int direction, size_t size)
1412 {
1413 
1414 	return size;
1415 }
1416 
1417 static paddr_t
1418 sv_mappage(void *addr, void *mem, off_t off, int prot)
1419 {
1420 	struct sv_softc *sc;
1421 	struct sv_dma *p;
1422 
1423 	sc = addr;
1424 	if (off < 0)
1425 		return -1;
1426 	for (p = sc->sc_dmas; p && KERNADDR(p) != mem; p = p->next)
1427 		continue;
1428 	if (p == NULL)
1429 		return -1;
1430 	return bus_dmamem_mmap(sc->sc_dmatag, p->segs, p->nsegs,
1431 			       off, prot, BUS_DMA_WAITOK);
1432 }
1433 
1434 static int
1435 sv_get_props(void *addr)
1436 {
1437 	return AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
1438 }
1439