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sv.c revision 1.48
      1 /*      $NetBSD: sv.c,v 1.48 2013/07/17 21:26:29 soren Exp $ */
      2 /*      $OpenBSD: sv.c,v 1.2 1998/07/13 01:50:15 csapuntz Exp $ */
      3 
      4 /*
      5  * Copyright (c) 1999, 2008 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 (at) 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 1.48 2013/07/17 21:26:29 soren Exp $");
     71 
     72 #include <sys/param.h>
     73 #include <sys/systm.h>
     74 #include <sys/kernel.h>
     75 #include <sys/kmem.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(amd64) || defined(i386)
     99 #include <dev/isa/isavar.h>
    100 #endif
    101 
    102 #ifdef AUDIO_DEBUG
    103 #define DPRINTF(x)	if (svdebug) printf x
    104 #define DPRINTFN(n,x)	if (svdebug>(n)) printf x
    105 int	svdebug = 0;
    106 #else
    107 #define DPRINTF(x)
    108 #define DPRINTFN(n,x)
    109 #endif
    110 
    111 static int	sv_match(device_t, cfdata_t, void *);
    112 static void	sv_attach(device_t, device_t, void *);
    113 static int	sv_intr(void *);
    114 
    115 struct sv_dma {
    116 	bus_dmamap_t map;
    117 	void *addr;
    118 	bus_dma_segment_t segs[1];
    119 	int nsegs;
    120 	size_t size;
    121 	struct sv_dma *next;
    122 };
    123 #define DMAADDR(p) ((p)->map->dm_segs[0].ds_addr)
    124 #define KERNADDR(p) ((void *)((p)->addr))
    125 
    126 CFATTACH_DECL_NEW(sv, sizeof(struct sv_softc),
    127     sv_match, sv_attach, NULL, NULL);
    128 
    129 static struct audio_device sv_device = {
    130 	"S3 SonicVibes",
    131 	"",
    132 	"sv"
    133 };
    134 
    135 #define ARRAY_SIZE(foo)  ((sizeof(foo)) / sizeof(foo[0]))
    136 
    137 static int	sv_allocmem(struct sv_softc *, size_t, size_t, int,
    138 			    struct sv_dma *);
    139 static int	sv_freemem(struct sv_softc *, struct sv_dma *);
    140 
    141 static void	sv_init_mixer(struct sv_softc *);
    142 
    143 static int	sv_open(void *, int);
    144 static int	sv_query_encoding(void *, struct audio_encoding *);
    145 static int	sv_set_params(void *, int, int, audio_params_t *,
    146 			      audio_params_t *, stream_filter_list_t *,
    147 			      stream_filter_list_t *);
    148 static int	sv_round_blocksize(void *, int, int, const audio_params_t *);
    149 static int	sv_trigger_output(void *, void *, void *, int, void (*)(void *),
    150 				  void *, const audio_params_t *);
    151 static int	sv_trigger_input(void *, void *, void *, int, void (*)(void *),
    152 				 void *, const audio_params_t *);
    153 static int	sv_halt_output(void *);
    154 static int	sv_halt_input(void *);
    155 static int	sv_getdev(void *, struct audio_device *);
    156 static int	sv_mixer_set_port(void *, mixer_ctrl_t *);
    157 static int	sv_mixer_get_port(void *, mixer_ctrl_t *);
    158 static int	sv_query_devinfo(void *, mixer_devinfo_t *);
    159 static void *	sv_malloc(void *, int, size_t);
    160 static void	sv_free(void *, void *, size_t);
    161 static size_t	sv_round_buffersize(void *, int, size_t);
    162 static paddr_t	sv_mappage(void *, void *, off_t, int);
    163 static int	sv_get_props(void *);
    164 static void	sv_get_locks(void *, kmutex_t **, kmutex_t **);
    165 
    166 #ifdef AUDIO_DEBUG
    167 void    sv_dumpregs(struct sv_softc *sc);
    168 #endif
    169 
    170 static const struct audio_hw_if sv_hw_if = {
    171 	sv_open,
    172 	NULL,			/* close */
    173 	NULL,
    174 	sv_query_encoding,
    175 	sv_set_params,
    176 	sv_round_blocksize,
    177 	NULL,
    178 	NULL,
    179 	NULL,
    180 	NULL,
    181 	NULL,
    182 	sv_halt_output,
    183 	sv_halt_input,
    184 	NULL,
    185 	sv_getdev,
    186 	NULL,
    187 	sv_mixer_set_port,
    188 	sv_mixer_get_port,
    189 	sv_query_devinfo,
    190 	sv_malloc,
    191 	sv_free,
    192 	sv_round_buffersize,
    193 	sv_mappage,
    194 	sv_get_props,
    195 	sv_trigger_output,
    196 	sv_trigger_input,
    197 	NULL,
    198 	sv_get_locks,
    199 };
    200 
    201 #define SV_NFORMATS	4
    202 static const struct audio_format sv_formats[SV_NFORMATS] = {
    203 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
    204 	 2, AUFMT_STEREO, 0, {2000, 48000}},
    205 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_SLINEAR_LE, 16, 16,
    206 	 1, AUFMT_MONAURAL, 0, {2000, 48000}},
    207 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 8, 8,
    208 	 2, AUFMT_STEREO, 0, {2000, 48000}},
    209 	{NULL, AUMODE_PLAY | AUMODE_RECORD, AUDIO_ENCODING_ULINEAR_LE, 8, 8,
    210 	 1, AUFMT_MONAURAL, 0, {2000, 48000}},
    211 };
    212 
    213 
    214 static void
    215 sv_write(struct sv_softc *sc, uint8_t reg, uint8_t val)
    216 {
    217 
    218 	DPRINTFN(8,("sv_write(0x%x, 0x%x)\n", reg, val));
    219 	bus_space_write_1(sc->sc_iot, sc->sc_ioh, reg, val);
    220 }
    221 
    222 static uint8_t
    223 sv_read(struct sv_softc *sc, uint8_t reg)
    224 {
    225 	uint8_t val;
    226 
    227 	val = bus_space_read_1(sc->sc_iot, sc->sc_ioh, reg);
    228 	DPRINTFN(8,("sv_read(0x%x) = 0x%x\n", reg, val));
    229 	return val;
    230 }
    231 
    232 static uint8_t
    233 sv_read_indirect(struct sv_softc *sc, uint8_t reg)
    234 {
    235 	uint8_t val;
    236 
    237 	sv_write(sc, SV_CODEC_IADDR, reg & SV_IADDR_MASK);
    238 	val = sv_read(sc, SV_CODEC_IDATA);
    239 	return val;
    240 }
    241 
    242 static void
    243 sv_write_indirect(struct sv_softc *sc, uint8_t reg, uint8_t val)
    244 {
    245 	uint8_t iaddr;
    246 
    247 	iaddr = reg & SV_IADDR_MASK;
    248 	if (reg == SV_DMA_DATA_FORMAT)
    249 		iaddr |= SV_IADDR_MCE;
    250 
    251 	sv_write(sc, SV_CODEC_IADDR, iaddr);
    252 	sv_write(sc, SV_CODEC_IDATA, val);
    253 }
    254 
    255 static int
    256 sv_match(device_t parent, cfdata_t match, void *aux)
    257 {
    258 	struct pci_attach_args *pa;
    259 
    260 	pa = aux;
    261 	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_S3 &&
    262 	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_S3_SONICVIBES)
    263 		return 1;
    264 
    265 	return 0;
    266 }
    267 
    268 static pcireg_t pci_io_alloc_low, pci_io_alloc_high;
    269 
    270 static int
    271 pci_alloc_io(pci_chipset_tag_t pc, pcitag_t pt, int pcioffs,
    272     bus_space_tag_t iot, bus_size_t size, bus_size_t align,
    273     bus_size_t bound, int flags, bus_space_handle_t *ioh)
    274 {
    275 	bus_addr_t addr;
    276 	int error;
    277 
    278 	error = bus_space_alloc(iot, pci_io_alloc_low, pci_io_alloc_high,
    279 				size, align, bound, flags, &addr, ioh);
    280 	if (error)
    281 		return error;
    282 
    283 	pci_conf_write(pc, pt, pcioffs, addr);
    284 	return 0;
    285 }
    286 
    287 /*
    288  * Allocate IO addresses when all other configuration is done.
    289  */
    290 static void
    291 sv_defer(device_t self)
    292 {
    293 	struct sv_softc *sc;
    294 	pci_chipset_tag_t pc;
    295 	pcitag_t pt;
    296 	pcireg_t dmaio;
    297 
    298 	sc = device_private(self);
    299 	pc = sc->sc_pa.pa_pc;
    300 	pt = sc->sc_pa.pa_tag;
    301 	DPRINTF(("sv_defer: %p\n", sc));
    302 
    303 	/* XXX
    304 	 * Get a reasonable default for the I/O range.
    305 	 * Assume the range around SB_PORTBASE is valid on this PCI bus.
    306 	 */
    307 	pci_io_alloc_low = pci_conf_read(pc, pt, SV_SB_PORTBASE_SLOT);
    308 	pci_io_alloc_high = pci_io_alloc_low + 0x1000;
    309 
    310 	if (pci_alloc_io(pc, pt, SV_DMAA_CONFIG_OFF,
    311 			  sc->sc_iot, SV_DMAA_SIZE, SV_DMAA_ALIGN, 0,
    312 			  0, &sc->sc_dmaa_ioh)) {
    313 		printf("sv_attach: cannot allocate DMA A range\n");
    314 		return;
    315 	}
    316 	dmaio = pci_conf_read(pc, pt, SV_DMAA_CONFIG_OFF);
    317 	DPRINTF(("sv_attach: addr a dmaio=0x%lx\n", (u_long)dmaio));
    318 	pci_conf_write(pc, pt, SV_DMAA_CONFIG_OFF,
    319 		       dmaio | SV_DMA_CHANNEL_ENABLE | SV_DMAA_EXTENDED_ADDR);
    320 
    321 	if (pci_alloc_io(pc, pt, SV_DMAC_CONFIG_OFF,
    322 			  sc->sc_iot, SV_DMAC_SIZE, SV_DMAC_ALIGN, 0,
    323 			  0, &sc->sc_dmac_ioh)) {
    324 		printf("sv_attach: cannot allocate DMA C range\n");
    325 		return;
    326 	}
    327 	dmaio = pci_conf_read(pc, pt, SV_DMAC_CONFIG_OFF);
    328 	DPRINTF(("sv_attach: addr c dmaio=0x%lx\n", (u_long)dmaio));
    329 	pci_conf_write(pc, pt, SV_DMAC_CONFIG_OFF,
    330 		       dmaio | SV_DMA_CHANNEL_ENABLE);
    331 
    332 	sc->sc_dmaset = 1;
    333 }
    334 
    335 static void
    336 sv_attach(device_t parent, device_t self, void *aux)
    337 {
    338 	struct sv_softc *sc;
    339 	struct pci_attach_args *pa;
    340 	pci_chipset_tag_t pc;
    341 	pcitag_t pt;
    342 	pci_intr_handle_t ih;
    343 	pcireg_t csr;
    344 	char const *intrstr;
    345 	uint8_t reg;
    346 	struct audio_attach_args arg;
    347 
    348 	sc = device_private(self);
    349 	pa = aux;
    350 	pc = pa->pa_pc;
    351 	pt = pa->pa_tag;
    352 	printf ("\n");
    353 
    354 	/* Map I/O registers */
    355 	if (pci_mapreg_map(pa, SV_ENHANCED_PORTBASE_SLOT,
    356 			   PCI_MAPREG_TYPE_IO, 0,
    357 			   &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) {
    358 		aprint_error_dev(self, "can't map enhanced i/o space\n");
    359 		return;
    360 	}
    361 	if (pci_mapreg_map(pa, SV_FM_PORTBASE_SLOT,
    362 			   PCI_MAPREG_TYPE_IO, 0,
    363 			   &sc->sc_opliot, &sc->sc_oplioh, NULL, NULL)) {
    364 		aprint_error_dev(self, "can't map FM i/o space\n");
    365 		return;
    366 	}
    367 	if (pci_mapreg_map(pa, SV_MIDI_PORTBASE_SLOT,
    368 			   PCI_MAPREG_TYPE_IO, 0,
    369 			   &sc->sc_midiiot, &sc->sc_midiioh, NULL, NULL)) {
    370 		aprint_error_dev(self, "can't map MIDI i/o space\n");
    371 		return;
    372 	}
    373 	DPRINTF(("sv: IO ports: enhanced=0x%x, OPL=0x%x, MIDI=0x%x\n",
    374 		 (int)sc->sc_ioh, (int)sc->sc_oplioh, (int)sc->sc_midiioh));
    375 
    376 #if defined(alpha)
    377 	/* XXX Force allocation through the SGMAP. */
    378 	sc->sc_dmatag = alphabus_dma_get_tag(pa->pa_dmat, ALPHA_BUS_ISA);
    379 #elif defined(amd64) || defined(i386)
    380 /* XXX
    381  * The SonicVibes DMA is broken and only works on 24-bit addresses.
    382  * As long as bus_dmamem_alloc_range() is missing we use the ISA
    383  * DMA tag on i386.
    384  */
    385 	sc->sc_dmatag = &isa_bus_dma_tag;
    386 #else
    387 	sc->sc_dmatag = pa->pa_dmat;
    388 #endif
    389 
    390 	pci_conf_write(pc, pt, SV_DMAA_CONFIG_OFF, SV_DMAA_EXTENDED_ADDR);
    391 	pci_conf_write(pc, pt, SV_DMAC_CONFIG_OFF, 0);
    392 
    393 	/* Enable the device. */
    394 	csr = pci_conf_read(pc, pt, PCI_COMMAND_STATUS_REG);
    395 	pci_conf_write(pc, pt, PCI_COMMAND_STATUS_REG,
    396 		       csr | PCI_COMMAND_MASTER_ENABLE);
    397 
    398 	sv_write_indirect(sc, SV_ANALOG_POWER_DOWN_CONTROL, 0);
    399 	sv_write_indirect(sc, SV_DIGITAL_POWER_DOWN_CONTROL, 0);
    400 
    401 	/* initialize codec registers */
    402 	reg = sv_read(sc, SV_CODEC_CONTROL);
    403 	reg |= SV_CTL_RESET;
    404 	sv_write(sc, SV_CODEC_CONTROL, reg);
    405 	delay(50);
    406 
    407 	reg = sv_read(sc, SV_CODEC_CONTROL);
    408 	reg &= ~SV_CTL_RESET;
    409 	reg |= SV_CTL_INTA | SV_CTL_ENHANCED;
    410 
    411 	/* This write clears the reset */
    412 	sv_write(sc, SV_CODEC_CONTROL, reg);
    413 	delay(50);
    414 
    415 	/* This write actually shoves the new values in */
    416 	sv_write(sc, SV_CODEC_CONTROL, reg);
    417 
    418 	DPRINTF(("sv_attach: control=0x%x\n", sv_read(sc, SV_CODEC_CONTROL)));
    419 
    420 	/* Map and establish the interrupt. */
    421 	if (pci_intr_map(pa, &ih)) {
    422 		aprint_error_dev(self, "couldn't map interrupt\n");
    423 		return;
    424 	}
    425 
    426 	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
    427 	mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO);
    428 
    429 	intrstr = pci_intr_string(pc, ih);
    430 	sc->sc_ih = pci_intr_establish(pc, ih, IPL_AUDIO, sv_intr, sc);
    431 	if (sc->sc_ih == NULL) {
    432 		aprint_error_dev(self, "couldn't establish interrupt");
    433 		if (intrstr != NULL)
    434 			aprint_error(" at %s", intrstr);
    435 		aprint_error("\n");
    436 		mutex_destroy(&sc->sc_lock);
    437 		mutex_destroy(&sc->sc_intr_lock);
    438 		return;
    439 	}
    440 	printf("%s: interrupting at %s\n", device_xname(self), intrstr);
    441 	printf("%s: rev %d", device_xname(self),
    442 	       sv_read_indirect(sc, SV_REVISION_LEVEL));
    443 	if (sv_read(sc, SV_CODEC_CONTROL) & SV_CTL_MD1)
    444 		printf(", reverb SRAM present");
    445 	if (!(sv_read_indirect(sc, SV_WAVETABLE_SOURCE_SELECT) & SV_WSS_WT0))
    446 		printf(", wavetable ROM present");
    447 	printf("\n");
    448 
    449 	/* Enable DMA interrupts */
    450 	reg = sv_read(sc, SV_CODEC_INTMASK);
    451 	reg &= ~(SV_INTMASK_DMAA | SV_INTMASK_DMAC);
    452 	reg |= SV_INTMASK_UD | SV_INTMASK_SINT | SV_INTMASK_MIDI;
    453 	sv_write(sc, SV_CODEC_INTMASK, reg);
    454 	sv_read(sc, SV_CODEC_STATUS);
    455 
    456 	sv_init_mixer(sc);
    457 
    458 	audio_attach_mi(&sv_hw_if, sc, self);
    459 
    460 	arg.type = AUDIODEV_TYPE_OPL;
    461 	arg.hwif = 0;
    462 	arg.hdl = 0;
    463 	(void)config_found(self, &arg, audioprint);
    464 
    465 	sc->sc_pa = *pa;	/* for deferred setup */
    466 	config_defer(self, sv_defer);
    467 }
    468 
    469 #ifdef AUDIO_DEBUG
    470 void
    471 sv_dumpregs(struct sv_softc *sc)
    472 {
    473 	int idx;
    474 
    475 #if 0
    476 	for (idx = 0; idx < 0x50; idx += 4)
    477 		printf ("%02x = %x\n", idx,
    478 			pci_conf_read(pa->pa_pc, pa->pa_tag, idx));
    479 #endif
    480 
    481 	for (idx = 0; idx < 6; idx++)
    482 		printf ("REG %02x = %02x\n", idx, sv_read(sc, idx));
    483 
    484 	for (idx = 0; idx < 0x32; idx++)
    485 		printf ("IREG %02x = %02x\n", idx, sv_read_indirect(sc, idx));
    486 
    487 	for (idx = 0; idx < 0x10; idx++)
    488 		printf ("DMA %02x = %02x\n", idx,
    489 			bus_space_read_1(sc->sc_iot, sc->sc_dmaa_ioh, idx));
    490 }
    491 #endif
    492 
    493 static int
    494 sv_intr(void *p)
    495 {
    496 	struct sv_softc *sc;
    497 	uint8_t intr;
    498 
    499 	sc = p;
    500 
    501 	mutex_spin_enter(&sc->sc_intr_lock);
    502 
    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) {
    507 		if (sc->sc_pintr)
    508 			sc->sc_pintr(sc->sc_parg);
    509 	}
    510 
    511 	if (intr & SV_INTSTATUS_DMAC) {
    512 		if (sc->sc_rintr)
    513 			sc->sc_rintr(sc->sc_rarg);
    514 	}
    515 
    516 	mutex_spin_exit(&sc->sc_intr_lock);
    517 
    518 	return (intr & (SV_INTSTATUS_DMAA | SV_INTSTATUS_DMAC)) != 0;
    519 }
    520 
    521 static int
    522 sv_allocmem(struct sv_softc *sc, size_t size, size_t align,
    523     int direction, struct sv_dma *p)
    524 {
    525 	int error;
    526 
    527 	p->size = size;
    528 	error = bus_dmamem_alloc(sc->sc_dmatag, p->size, align, 0,
    529 	    p->segs, ARRAY_SIZE(p->segs), &p->nsegs, BUS_DMA_WAITOK);
    530 	if (error)
    531 		return error;
    532 
    533 	error = bus_dmamem_map(sc->sc_dmatag, p->segs, p->nsegs, p->size,
    534 	    &p->addr, BUS_DMA_WAITOK|BUS_DMA_COHERENT);
    535 	if (error)
    536 		goto free;
    537 
    538 	error = bus_dmamap_create(sc->sc_dmatag, p->size, 1, p->size,
    539 	    0, BUS_DMA_WAITOK, &p->map);
    540 	if (error)
    541 		goto unmap;
    542 
    543 	error = bus_dmamap_load(sc->sc_dmatag, p->map, p->addr, p->size, NULL,
    544 	    BUS_DMA_WAITOK | (direction == AUMODE_RECORD) ? BUS_DMA_READ : BUS_DMA_WRITE);
    545 	if (error)
    546 		goto destroy;
    547 	DPRINTF(("sv_allocmem: pa=%lx va=%lx pba=%lx\n",
    548 	    (long)p->segs[0].ds_addr, (long)KERNADDR(p), (long)DMAADDR(p)));
    549 	return 0;
    550 
    551 destroy:
    552 	bus_dmamap_destroy(sc->sc_dmatag, p->map);
    553 unmap:
    554 	bus_dmamem_unmap(sc->sc_dmatag, p->addr, p->size);
    555 free:
    556 	bus_dmamem_free(sc->sc_dmatag, p->segs, p->nsegs);
    557 	return error;
    558 }
    559 
    560 static int
    561 sv_freemem(struct sv_softc *sc, struct sv_dma *p)
    562 {
    563 
    564 	bus_dmamap_unload(sc->sc_dmatag, p->map);
    565 	bus_dmamap_destroy(sc->sc_dmatag, p->map);
    566 	bus_dmamem_unmap(sc->sc_dmatag, p->addr, p->size);
    567 	bus_dmamem_free(sc->sc_dmatag, p->segs, p->nsegs);
    568 	return 0;
    569 }
    570 
    571 static int
    572 sv_open(void *addr, int flags)
    573 {
    574 	struct sv_softc *sc;
    575 
    576 	sc = addr;
    577 	DPRINTF(("sv_open\n"));
    578 	if (!sc->sc_dmaset)
    579 		return ENXIO;
    580 
    581 	return 0;
    582 }
    583 
    584 static int
    585 sv_query_encoding(void *addr, struct audio_encoding *fp)
    586 {
    587 
    588 	switch (fp->index) {
    589 	case 0:
    590 		strcpy(fp->name, AudioEulinear);
    591 		fp->encoding = AUDIO_ENCODING_ULINEAR;
    592 		fp->precision = 8;
    593 		fp->flags = 0;
    594 		return 0;
    595 	case 1:
    596 		strcpy(fp->name, AudioEmulaw);
    597 		fp->encoding = AUDIO_ENCODING_ULAW;
    598 		fp->precision = 8;
    599 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    600 		return 0;
    601 	case 2:
    602 		strcpy(fp->name, AudioEalaw);
    603 		fp->encoding = AUDIO_ENCODING_ALAW;
    604 		fp->precision = 8;
    605 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    606 		return 0;
    607 	case 3:
    608 		strcpy(fp->name, AudioEslinear);
    609 		fp->encoding = AUDIO_ENCODING_SLINEAR;
    610 		fp->precision = 8;
    611 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    612 		return 0;
    613 	case 4:
    614 		strcpy(fp->name, AudioEslinear_le);
    615 		fp->encoding = AUDIO_ENCODING_SLINEAR_LE;
    616 		fp->precision = 16;
    617 		fp->flags = 0;
    618 		return 0;
    619 	case 5:
    620 		strcpy(fp->name, AudioEulinear_le);
    621 		fp->encoding = AUDIO_ENCODING_ULINEAR_LE;
    622 		fp->precision = 16;
    623 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    624 		return 0;
    625 	case 6:
    626 		strcpy(fp->name, AudioEslinear_be);
    627 		fp->encoding = AUDIO_ENCODING_SLINEAR_BE;
    628 		fp->precision = 16;
    629 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    630 		return 0;
    631 	case 7:
    632 		strcpy(fp->name, AudioEulinear_be);
    633 		fp->encoding = AUDIO_ENCODING_ULINEAR_BE;
    634 		fp->precision = 16;
    635 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    636 		return 0;
    637 	default:
    638 		return EINVAL;
    639 	}
    640 }
    641 
    642 static int
    643 sv_set_params(void *addr, int setmode, int usemode, audio_params_t *play,
    644     audio_params_t *rec, stream_filter_list_t *pfil, stream_filter_list_t *rfil)
    645 {
    646 	struct sv_softc *sc;
    647 	audio_params_t *p;
    648 	uint32_t val;
    649 
    650 	sc = addr;
    651 	p = NULL;
    652 	/*
    653 	 * This device only has one clock, so make the sample rates match.
    654 	 */
    655 	if (play->sample_rate != rec->sample_rate &&
    656 	    usemode == (AUMODE_PLAY | AUMODE_RECORD)) {
    657 		if (setmode == AUMODE_PLAY) {
    658 			rec->sample_rate = play->sample_rate;
    659 			setmode |= AUMODE_RECORD;
    660 		} else if (setmode == AUMODE_RECORD) {
    661 			play->sample_rate = rec->sample_rate;
    662 			setmode |= AUMODE_PLAY;
    663 		} else
    664 			return EINVAL;
    665 	}
    666 
    667 	if (setmode & AUMODE_RECORD) {
    668 		p = rec;
    669 		if (auconv_set_converter(sv_formats, SV_NFORMATS,
    670 					 AUMODE_RECORD, rec, FALSE, rfil) < 0)
    671 			return EINVAL;
    672 	}
    673 	if (setmode & AUMODE_PLAY) {
    674 		p = play;
    675 		if (auconv_set_converter(sv_formats, SV_NFORMATS,
    676 					 AUMODE_PLAY, play, FALSE, pfil) < 0)
    677 			return EINVAL;
    678 	}
    679 
    680 	if (p == NULL)
    681 		return 0;
    682 
    683 	val = p->sample_rate * 65536 / 48000;
    684 	/*
    685 	 * If the sample rate is exactly 48 kHz, the fraction would overflow the
    686 	 * register, so we have to bias it.  This causes a little clock drift.
    687 	 * The drift is below normal crystal tolerance (.0001%), so although
    688 	 * this seems a little silly, we can pretty much ignore it.
    689 	 * (I tested the output speed with values of 1-20, just to be sure this
    690 	 * register isn't *supposed* to have a bias.  It isn't.)
    691 	 * - mycroft
    692 	 */
    693 	if (val > 65535)
    694 		val = 65535;
    695 
    696 	mutex_spin_enter(&sc->sc_intr_lock);
    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 	mutex_spin_exit(&sc->sc_intr_lock);
    700 
    701 #define F_REF 24576000
    702 
    703 #define ABS(x) (((x) < 0) ? (-x) : (x))
    704 
    705 	if (setmode & AUMODE_RECORD) {
    706 		/* The ADC reference frequency (f_out) is 512 * sample rate */
    707 
    708 		/* f_out is dervied from the 24.576MHz crystal by three values:
    709 		   M & N & R. The equation is as follows:
    710 
    711 		   f_out = (m + 2) * f_ref / ((n + 2) * (2 ^ a))
    712 
    713 		   with the constraint that:
    714 
    715 		   80 MHz < (m + 2) / (n + 2) * f_ref <= 150MHz
    716 		   and n, m >= 1
    717 		*/
    718 
    719 		int  goal_f_out;
    720 		int  a, n, m, best_n, best_m, best_error;
    721 		int  pll_sample;
    722 		int  error;
    723 
    724 		goal_f_out = 512 * rec->sample_rate;
    725 		best_n = 0;
    726 		best_m = 0;
    727 		best_error = 10000000;
    728 		for (a = 0; a < 8; a++) {
    729 			if ((goal_f_out * (1 << a)) >= 80000000)
    730 				break;
    731 		}
    732 
    733 		/* a != 8 because sample_rate >= 2000 */
    734 
    735 		for (n = 33; n > 2; n--) {
    736 			m = (goal_f_out * n * (1 << a)) / F_REF;
    737 			if ((m > 257) || (m < 3))
    738 				continue;
    739 
    740 			pll_sample = (m * F_REF) / (n * (1 << a));
    741 			pll_sample /= 512;
    742 
    743 			/* Threshold might be good here */
    744 			error = pll_sample - rec->sample_rate;
    745 			error = ABS(error);
    746 
    747 			if (error < best_error) {
    748 				best_error = error;
    749 				best_n = n;
    750 				best_m = m;
    751 				if (error == 0) break;
    752 			}
    753 		}
    754 
    755 		best_n -= 2;
    756 		best_m -= 2;
    757 
    758 		mutex_spin_enter(&sc->sc_intr_lock);
    759 		sv_write_indirect(sc, SV_ADC_PLL_M, best_m);
    760 		sv_write_indirect(sc, SV_ADC_PLL_N,
    761 				  best_n | (a << SV_PLL_R_SHIFT));
    762 		mutex_spin_exit(&sc->sc_intr_lock);
    763 	}
    764 
    765 	return 0;
    766 }
    767 
    768 static int
    769 sv_round_blocksize(void *addr, int blk, int mode,
    770     const audio_params_t *param)
    771 {
    772 
    773 	return blk & -32;	/* keep good alignment */
    774 }
    775 
    776 static int
    777 sv_trigger_output(void *addr, void *start, void *end, int blksize,
    778     void (*intr)(void *), void *arg, const audio_params_t *param)
    779 {
    780 	struct sv_softc *sc;
    781 	struct sv_dma *p;
    782 	uint8_t mode;
    783 	int dma_count;
    784 
    785 	DPRINTFN(1, ("sv_trigger_output: sc=%p start=%p end=%p blksize=%d "
    786 	    "intr=%p(%p)\n", addr, start, end, blksize, intr, arg));
    787 	sc = addr;
    788 	sc->sc_pintr = intr;
    789 	sc->sc_parg = arg;
    790 
    791 	mode = sv_read_indirect(sc, SV_DMA_DATA_FORMAT);
    792 	mode &= ~(SV_DMAA_FORMAT16 | SV_DMAA_STEREO);
    793 	if (param->precision == 16)
    794 		mode |= SV_DMAA_FORMAT16;
    795 	if (param->channels == 2)
    796 		mode |= SV_DMAA_STEREO;
    797 	sv_write_indirect(sc, SV_DMA_DATA_FORMAT, mode);
    798 
    799 	for (p = sc->sc_dmas; p && KERNADDR(p) != start; p = p->next)
    800 		continue;
    801 	if (p == NULL) {
    802 		printf("sv_trigger_output: bad addr %p\n", start);
    803 		return EINVAL;
    804 	}
    805 
    806 	dma_count = ((char *)end - (char *)start) - 1;
    807 	DPRINTF(("sv_trigger_output: DMA start loop input addr=%x cc=%d\n",
    808 	    (int)DMAADDR(p), dma_count));
    809 
    810 	bus_space_write_4(sc->sc_iot, sc->sc_dmaa_ioh, SV_DMA_ADDR0,
    811 			  DMAADDR(p));
    812 	bus_space_write_4(sc->sc_iot, sc->sc_dmaa_ioh, SV_DMA_COUNT0,
    813 			  dma_count);
    814 	bus_space_write_1(sc->sc_iot, sc->sc_dmaa_ioh, SV_DMA_MODE,
    815 			  DMA37MD_READ | DMA37MD_LOOP);
    816 
    817 	DPRINTF(("sv_trigger_output: current addr=%x\n",
    818 	    bus_space_read_4(sc->sc_iot, sc->sc_dmaa_ioh, SV_DMA_ADDR0)));
    819 
    820 	dma_count = blksize - 1;
    821 
    822 	sv_write_indirect(sc, SV_DMAA_COUNT1, dma_count >> 8);
    823 	sv_write_indirect(sc, SV_DMAA_COUNT0, dma_count & 0xFF);
    824 
    825 	mode = sv_read_indirect(sc, SV_PLAY_RECORD_ENABLE);
    826 	sv_write_indirect(sc, SV_PLAY_RECORD_ENABLE, mode | SV_PLAY_ENABLE);
    827 
    828 	return 0;
    829 }
    830 
    831 static int
    832 sv_trigger_input(void *addr, void *start, void *end, int blksize,
    833     void (*intr)(void *), void *arg, const audio_params_t *param)
    834 {
    835 	struct sv_softc *sc;
    836 	struct sv_dma *p;
    837 	uint8_t mode;
    838 	int dma_count;
    839 
    840 	DPRINTFN(1, ("sv_trigger_input: sc=%p start=%p end=%p blksize=%d "
    841 	    "intr=%p(%p)\n", addr, start, end, blksize, intr, arg));
    842 	sc = addr;
    843 	sc->sc_rintr = intr;
    844 	sc->sc_rarg = arg;
    845 
    846 	mode = sv_read_indirect(sc, SV_DMA_DATA_FORMAT);
    847 	mode &= ~(SV_DMAC_FORMAT16 | SV_DMAC_STEREO);
    848 	if (param->precision == 16)
    849 		mode |= SV_DMAC_FORMAT16;
    850 	if (param->channels == 2)
    851 		mode |= SV_DMAC_STEREO;
    852 	sv_write_indirect(sc, SV_DMA_DATA_FORMAT, mode);
    853 
    854 	for (p = sc->sc_dmas; p && KERNADDR(p) != start; p = p->next)
    855 		continue;
    856 	if (!p) {
    857 		printf("sv_trigger_input: bad addr %p\n", start);
    858 		return EINVAL;
    859 	}
    860 
    861 	dma_count = (((char *)end - (char *)start) >> 1) - 1;
    862 	DPRINTF(("sv_trigger_input: DMA start loop input addr=%x cc=%d\n",
    863 	    (int)DMAADDR(p), dma_count));
    864 
    865 	bus_space_write_4(sc->sc_iot, sc->sc_dmac_ioh, SV_DMA_ADDR0,
    866 			  DMAADDR(p));
    867 	bus_space_write_4(sc->sc_iot, sc->sc_dmac_ioh, SV_DMA_COUNT0,
    868 			  dma_count);
    869 	bus_space_write_1(sc->sc_iot, sc->sc_dmac_ioh, SV_DMA_MODE,
    870 			  DMA37MD_WRITE | DMA37MD_LOOP);
    871 
    872 	DPRINTF(("sv_trigger_input: current addr=%x\n",
    873 	    bus_space_read_4(sc->sc_iot, sc->sc_dmac_ioh, SV_DMA_ADDR0)));
    874 
    875 	dma_count = (blksize >> 1) - 1;
    876 
    877 	sv_write_indirect(sc, SV_DMAC_COUNT1, dma_count >> 8);
    878 	sv_write_indirect(sc, SV_DMAC_COUNT0, dma_count & 0xFF);
    879 
    880 	mode = sv_read_indirect(sc, SV_PLAY_RECORD_ENABLE);
    881 	sv_write_indirect(sc, SV_PLAY_RECORD_ENABLE, mode | SV_RECORD_ENABLE);
    882 
    883 	return 0;
    884 }
    885 
    886 static int
    887 sv_halt_output(void *addr)
    888 {
    889 	struct sv_softc *sc;
    890 	uint8_t mode;
    891 
    892 	DPRINTF(("sv: sv_halt_output\n"));
    893 	sc = addr;
    894 	mode = sv_read_indirect(sc, SV_PLAY_RECORD_ENABLE);
    895 	sv_write_indirect(sc, SV_PLAY_RECORD_ENABLE, mode & ~SV_PLAY_ENABLE);
    896 	sc->sc_pintr = 0;
    897 
    898 	return 0;
    899 }
    900 
    901 static int
    902 sv_halt_input(void *addr)
    903 {
    904 	struct sv_softc *sc;
    905 	uint8_t mode;
    906 
    907 	DPRINTF(("sv: sv_halt_input\n"));
    908 	sc = addr;
    909 	mode = sv_read_indirect(sc, SV_PLAY_RECORD_ENABLE);
    910 	sv_write_indirect(sc, SV_PLAY_RECORD_ENABLE, mode & ~SV_RECORD_ENABLE);
    911 	sc->sc_rintr = 0;
    912 
    913 	return 0;
    914 }
    915 
    916 static int
    917 sv_getdev(void *addr, struct audio_device *retp)
    918 {
    919 
    920 	*retp = sv_device;
    921 	return 0;
    922 }
    923 
    924 
    925 /*
    926  * Mixer related code is here
    927  *
    928  */
    929 
    930 #define SV_INPUT_CLASS 0
    931 #define SV_OUTPUT_CLASS 1
    932 #define SV_RECORD_CLASS 2
    933 
    934 #define SV_LAST_CLASS 2
    935 
    936 static const char *mixer_classes[] =
    937 	{ AudioCinputs, AudioCoutputs, AudioCrecord };
    938 
    939 static const struct {
    940 	uint8_t   l_port;
    941 	uint8_t   r_port;
    942 	uint8_t   mask;
    943 	uint8_t   class;
    944 	const char *audio;
    945 } ports[] = {
    946   { SV_LEFT_AUX1_INPUT_CONTROL, SV_RIGHT_AUX1_INPUT_CONTROL, SV_AUX1_MASK,
    947     SV_INPUT_CLASS, "aux1" },
    948   { SV_LEFT_CD_INPUT_CONTROL, SV_RIGHT_CD_INPUT_CONTROL, SV_CD_MASK,
    949     SV_INPUT_CLASS, AudioNcd },
    950   { SV_LEFT_LINE_IN_INPUT_CONTROL, SV_RIGHT_LINE_IN_INPUT_CONTROL, SV_LINE_IN_MASK,
    951     SV_INPUT_CLASS, AudioNline },
    952   { SV_MIC_INPUT_CONTROL, 0, SV_MIC_MASK, SV_INPUT_CLASS, AudioNmicrophone },
    953   { SV_LEFT_SYNTH_INPUT_CONTROL, SV_RIGHT_SYNTH_INPUT_CONTROL,
    954     SV_SYNTH_MASK, SV_INPUT_CLASS, AudioNfmsynth },
    955   { SV_LEFT_AUX2_INPUT_CONTROL, SV_RIGHT_AUX2_INPUT_CONTROL, SV_AUX2_MASK,
    956     SV_INPUT_CLASS, "aux2" },
    957   { SV_LEFT_PCM_INPUT_CONTROL, SV_RIGHT_PCM_INPUT_CONTROL, SV_PCM_MASK,
    958     SV_INPUT_CLASS, AudioNdac },
    959   { SV_LEFT_MIXER_OUTPUT_CONTROL, SV_RIGHT_MIXER_OUTPUT_CONTROL,
    960     SV_MIXER_OUT_MASK, SV_OUTPUT_CLASS, AudioNmaster }
    961 };
    962 
    963 
    964 static const struct {
    965 	int idx;
    966 	const char *name;
    967 } record_sources[] = {
    968 	{ SV_REC_CD, AudioNcd },
    969 	{ SV_REC_DAC, AudioNdac },
    970 	{ SV_REC_AUX2, "aux2" },
    971 	{ SV_REC_LINE, AudioNline },
    972 	{ SV_REC_AUX1, "aux1" },
    973 	{ SV_REC_MIC, AudioNmicrophone },
    974 	{ SV_REC_MIXER, AudioNmixerout }
    975 };
    976 
    977 
    978 #define SV_DEVICES_PER_PORT 2
    979 #define SV_FIRST_MIXER (SV_LAST_CLASS + 1)
    980 #define SV_LAST_MIXER (SV_DEVICES_PER_PORT * (ARRAY_SIZE(ports)) + SV_LAST_CLASS)
    981 #define SV_RECORD_SOURCE (SV_LAST_MIXER + 1)
    982 #define SV_MIC_BOOST (SV_LAST_MIXER + 2)
    983 #define SV_RECORD_GAIN (SV_LAST_MIXER + 3)
    984 #define SV_SRS_MODE (SV_LAST_MIXER + 4)
    985 
    986 static int
    987 sv_query_devinfo(void *addr, mixer_devinfo_t *dip)
    988 {
    989 	int i;
    990 
    991 	/* It's a class */
    992 	if (dip->index <= SV_LAST_CLASS) {
    993 		dip->type = AUDIO_MIXER_CLASS;
    994 		dip->mixer_class = dip->index;
    995 		dip->next = dip->prev = AUDIO_MIXER_LAST;
    996 		strcpy(dip->label.name, mixer_classes[dip->index]);
    997 		return 0;
    998 	}
    999 
   1000 	if (dip->index >= SV_FIRST_MIXER &&
   1001 	    dip->index <= SV_LAST_MIXER) {
   1002 		int off, mute ,idx;
   1003 
   1004 		off = dip->index - SV_FIRST_MIXER;
   1005 		mute = (off % SV_DEVICES_PER_PORT);
   1006 		idx = off / SV_DEVICES_PER_PORT;
   1007 		dip->mixer_class = ports[idx].class;
   1008 		strcpy(dip->label.name, ports[idx].audio);
   1009 
   1010 		if (!mute) {
   1011 			dip->type = AUDIO_MIXER_VALUE;
   1012 			dip->prev = AUDIO_MIXER_LAST;
   1013 			dip->next = dip->index + 1;
   1014 
   1015 			if (ports[idx].r_port != 0)
   1016 				dip->un.v.num_channels = 2;
   1017 			else
   1018 				dip->un.v.num_channels = 1;
   1019 
   1020 			strcpy(dip->un.v.units.name, AudioNvolume);
   1021 		} else {
   1022 			dip->type = AUDIO_MIXER_ENUM;
   1023 			dip->prev = dip->index - 1;
   1024 			dip->next = AUDIO_MIXER_LAST;
   1025 
   1026 			strcpy(dip->label.name, AudioNmute);
   1027 			dip->un.e.num_mem = 2;
   1028 			strcpy(dip->un.e.member[0].label.name, AudioNoff);
   1029 			dip->un.e.member[0].ord = 0;
   1030 			strcpy(dip->un.e.member[1].label.name, AudioNon);
   1031 			dip->un.e.member[1].ord = 1;
   1032 		}
   1033 
   1034 		return 0;
   1035 	}
   1036 
   1037 	switch (dip->index) {
   1038 	case SV_RECORD_SOURCE:
   1039 		dip->mixer_class = SV_RECORD_CLASS;
   1040 		dip->prev = AUDIO_MIXER_LAST;
   1041 		dip->next = SV_RECORD_GAIN;
   1042 		strcpy(dip->label.name, AudioNsource);
   1043 		dip->type = AUDIO_MIXER_ENUM;
   1044 
   1045 		dip->un.e.num_mem = ARRAY_SIZE(record_sources);
   1046 		for (i = 0; i < ARRAY_SIZE(record_sources); i++) {
   1047 			strcpy(dip->un.e.member[i].label.name,
   1048 			       record_sources[i].name);
   1049 			dip->un.e.member[i].ord = record_sources[i].idx;
   1050 		}
   1051 		return 0;
   1052 
   1053 	case SV_RECORD_GAIN:
   1054 		dip->mixer_class = SV_RECORD_CLASS;
   1055 		dip->prev = SV_RECORD_SOURCE;
   1056 		dip->next = AUDIO_MIXER_LAST;
   1057 		strcpy(dip->label.name, "gain");
   1058 		dip->type = AUDIO_MIXER_VALUE;
   1059 		dip->un.v.num_channels = 1;
   1060 		strcpy(dip->un.v.units.name, AudioNvolume);
   1061 		return 0;
   1062 
   1063 	case SV_MIC_BOOST:
   1064 		dip->mixer_class = SV_RECORD_CLASS;
   1065 		dip->prev = AUDIO_MIXER_LAST;
   1066 		dip->next = AUDIO_MIXER_LAST;
   1067 		strcpy(dip->label.name, "micboost");
   1068 		goto on_off;
   1069 
   1070 	case SV_SRS_MODE:
   1071 		dip->mixer_class = SV_OUTPUT_CLASS;
   1072 		dip->prev = dip->next = AUDIO_MIXER_LAST;
   1073 		strcpy(dip->label.name, AudioNspatial);
   1074 
   1075 	on_off:
   1076 		dip->type = AUDIO_MIXER_ENUM;
   1077 		dip->un.e.num_mem = 2;
   1078 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
   1079 		dip->un.e.member[0].ord = 0;
   1080 		strcpy(dip->un.e.member[1].label.name, AudioNon);
   1081 		dip->un.e.member[1].ord = 1;
   1082 		return 0;
   1083 	}
   1084 
   1085 	return ENXIO;
   1086 }
   1087 
   1088 static int
   1089 sv_mixer_set_port(void *addr, mixer_ctrl_t *cp)
   1090 {
   1091 	struct sv_softc *sc;
   1092 	uint8_t reg;
   1093 	int idx;
   1094 
   1095 	sc = addr;
   1096 	if (cp->dev >= SV_FIRST_MIXER &&
   1097 	    cp->dev <= SV_LAST_MIXER) {
   1098 		int off, mute;
   1099 
   1100 		off = cp->dev - SV_FIRST_MIXER;
   1101 		mute = (off % SV_DEVICES_PER_PORT);
   1102 		idx = off / SV_DEVICES_PER_PORT;
   1103 
   1104 		if (mute) {
   1105 			if (cp->type != AUDIO_MIXER_ENUM)
   1106 				return EINVAL;
   1107 
   1108 			mutex_spin_enter(&sc->sc_intr_lock);
   1109 			reg = sv_read_indirect(sc, ports[idx].l_port);
   1110 			if (cp->un.ord)
   1111 				reg |= SV_MUTE_BIT;
   1112 			else
   1113 				reg &= ~SV_MUTE_BIT;
   1114 			sv_write_indirect(sc, ports[idx].l_port, reg);
   1115 
   1116 			if (ports[idx].r_port) {
   1117 				reg = sv_read_indirect(sc, ports[idx].r_port);
   1118 				if (cp->un.ord)
   1119 					reg |= SV_MUTE_BIT;
   1120 				else
   1121 					reg &= ~SV_MUTE_BIT;
   1122 				sv_write_indirect(sc, ports[idx].r_port, reg);
   1123 			}
   1124 			mutex_spin_exit(&sc->sc_intr_lock);
   1125 		} else {
   1126 			int  lval, rval;
   1127 
   1128 			if (cp->type != AUDIO_MIXER_VALUE)
   1129 				return EINVAL;
   1130 
   1131 			if (cp->un.value.num_channels != 1 &&
   1132 			    cp->un.value.num_channels != 2)
   1133 				return (EINVAL);
   1134 
   1135 			if (ports[idx].r_port == 0) {
   1136 				if (cp->un.value.num_channels != 1)
   1137 					return (EINVAL);
   1138 				lval = cp->un.value.level[AUDIO_MIXER_LEVEL_MONO];
   1139 				rval = 0; /* shut up GCC */
   1140 			} else {
   1141 				if (cp->un.value.num_channels != 2)
   1142 					return (EINVAL);
   1143 
   1144 				lval = cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT];
   1145 				rval = cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT];
   1146 			}
   1147 
   1148 			mutex_spin_enter(&sc->sc_intr_lock);
   1149 			reg = sv_read_indirect(sc, ports[idx].l_port);
   1150 			reg &= ~(ports[idx].mask);
   1151 			lval = (AUDIO_MAX_GAIN - lval) * ports[idx].mask /
   1152 				AUDIO_MAX_GAIN;
   1153 			reg |= lval;
   1154 			sv_write_indirect(sc, ports[idx].l_port, reg);
   1155 
   1156 			if (ports[idx].r_port != 0) {
   1157 				reg = sv_read_indirect(sc, ports[idx].r_port);
   1158 				reg &= ~(ports[idx].mask);
   1159 
   1160 				rval = (AUDIO_MAX_GAIN - rval) * ports[idx].mask /
   1161 					AUDIO_MAX_GAIN;
   1162 				reg |= rval;
   1163 
   1164 				sv_write_indirect(sc, ports[idx].r_port, reg);
   1165 			}
   1166 
   1167 			sv_read_indirect(sc, ports[idx].l_port);
   1168 			mutex_spin_exit(&sc->sc_intr_lock);
   1169 		}
   1170 
   1171 		return 0;
   1172 	}
   1173 
   1174 
   1175 	switch (cp->dev) {
   1176 	case SV_RECORD_SOURCE:
   1177 		if (cp->type != AUDIO_MIXER_ENUM)
   1178 			return EINVAL;
   1179 
   1180 		for (idx = 0; idx < ARRAY_SIZE(record_sources); idx++) {
   1181 			if (record_sources[idx].idx == cp->un.ord)
   1182 				goto found;
   1183 		}
   1184 
   1185 		return EINVAL;
   1186 
   1187 	found:
   1188 		mutex_spin_enter(&sc->sc_intr_lock);
   1189 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL);
   1190 		reg &= ~SV_REC_SOURCE_MASK;
   1191 		reg |= (((cp->un.ord) << SV_REC_SOURCE_SHIFT) & SV_REC_SOURCE_MASK);
   1192 		sv_write_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL, reg);
   1193 
   1194 		reg = sv_read_indirect(sc, SV_RIGHT_ADC_INPUT_CONTROL);
   1195 		reg &= ~SV_REC_SOURCE_MASK;
   1196 		reg |= (((cp->un.ord) << SV_REC_SOURCE_SHIFT) & SV_REC_SOURCE_MASK);
   1197 		sv_write_indirect(sc, SV_RIGHT_ADC_INPUT_CONTROL, reg);
   1198 		mutex_spin_exit(&sc->sc_intr_lock);
   1199 		return 0;
   1200 
   1201 	case SV_RECORD_GAIN:
   1202 	{
   1203 		int val;
   1204 
   1205 		if (cp->type != AUDIO_MIXER_VALUE)
   1206 			return EINVAL;
   1207 
   1208 		if (cp->un.value.num_channels != 1)
   1209 			return EINVAL;
   1210 
   1211 		val = (cp->un.value.level[AUDIO_MIXER_LEVEL_MONO]
   1212 		    * SV_REC_GAIN_MASK) / AUDIO_MAX_GAIN;
   1213 
   1214 		mutex_spin_enter(&sc->sc_intr_lock);
   1215 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL);
   1216 		reg &= ~SV_REC_GAIN_MASK;
   1217 		reg |= val;
   1218 		sv_write_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL, reg);
   1219 
   1220 		reg = sv_read_indirect(sc, SV_RIGHT_ADC_INPUT_CONTROL);
   1221 		reg &= ~SV_REC_GAIN_MASK;
   1222 		reg |= val;
   1223 		sv_write_indirect(sc, SV_RIGHT_ADC_INPUT_CONTROL, reg);
   1224 		mutex_spin_exit(&sc->sc_intr_lock);
   1225 	}
   1226 	return (0);
   1227 
   1228 	case SV_MIC_BOOST:
   1229 		if (cp->type != AUDIO_MIXER_ENUM)
   1230 			return EINVAL;
   1231 
   1232 		mutex_spin_enter(&sc->sc_intr_lock);
   1233 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL);
   1234 		if (cp->un.ord) {
   1235 			reg |= SV_MIC_BOOST_BIT;
   1236 		} else {
   1237 			reg &= ~SV_MIC_BOOST_BIT;
   1238 		}
   1239 
   1240 		sv_write_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL, reg);
   1241 		mutex_spin_exit(&sc->sc_intr_lock);
   1242 		return 0;
   1243 
   1244 	case SV_SRS_MODE:
   1245 		if (cp->type != AUDIO_MIXER_ENUM)
   1246 			return EINVAL;
   1247 
   1248 		mutex_spin_enter(&sc->sc_intr_lock);
   1249 		reg = sv_read_indirect(sc, SV_SRS_SPACE_CONTROL);
   1250 		if (cp->un.ord) {
   1251 			reg &= ~SV_SRS_SPACE_ONOFF;
   1252 		} else {
   1253 			reg |= SV_SRS_SPACE_ONOFF;
   1254 		}
   1255 
   1256 		sv_write_indirect(sc, SV_SRS_SPACE_CONTROL, reg);
   1257 		mutex_spin_exit(&sc->sc_intr_lock);
   1258 		return 0;
   1259 	}
   1260 
   1261 	return EINVAL;
   1262 }
   1263 
   1264 static int
   1265 sv_mixer_get_port(void *addr, mixer_ctrl_t *cp)
   1266 {
   1267 	struct sv_softc *sc;
   1268 	int val, error;
   1269 	uint8_t reg;
   1270 
   1271 	sc = addr;
   1272 	error = 0;
   1273 
   1274 	mutex_spin_enter(&sc->sc_intr_lock);
   1275 
   1276 	if (cp->dev >= SV_FIRST_MIXER &&
   1277 	    cp->dev <= SV_LAST_MIXER) {
   1278 		int off = cp->dev - SV_FIRST_MIXER;
   1279 		int mute = (off % 2);
   1280 		int idx = off / 2;
   1281 
   1282 		off = cp->dev - SV_FIRST_MIXER;
   1283 		mute = (off % 2);
   1284 		idx = off / 2;
   1285 		if (mute) {
   1286 			if (cp->type != AUDIO_MIXER_ENUM)
   1287 				error = EINVAL;
   1288 			else {
   1289 				reg = sv_read_indirect(sc, ports[idx].l_port);
   1290 				cp->un.ord = ((reg & SV_MUTE_BIT) ? 1 : 0);
   1291 			}
   1292 		} else {
   1293 			if (cp->type != AUDIO_MIXER_VALUE ||
   1294 			    (cp->un.value.num_channels != 1 &&
   1295 			    cp->un.value.num_channels != 2) ||
   1296 			   ((ports[idx].r_port == 0 &&
   1297 			     cp->un.value.num_channels != 1) ||
   1298 			    (ports[idx].r_port != 0 &&
   1299 			     cp->un.value.num_channels != 2)))
   1300 				error = EINVAL;
   1301 			else {
   1302 				reg = sv_read_indirect(sc, ports[idx].l_port);
   1303 				reg &= ports[idx].mask;
   1304 
   1305 				val = AUDIO_MAX_GAIN -
   1306 				    ((reg * AUDIO_MAX_GAIN) / ports[idx].mask);
   1307 
   1308 				if (ports[idx].r_port != 0) {
   1309 					cp->un.value.level
   1310 					    [AUDIO_MIXER_LEVEL_LEFT] = val;
   1311 
   1312 					reg = sv_read_indirect(sc,
   1313 					    ports[idx].r_port);
   1314 					reg &= ports[idx].mask;
   1315 
   1316 					val = AUDIO_MAX_GAIN -
   1317 					    ((reg * AUDIO_MAX_GAIN)
   1318 					    / ports[idx].mask);
   1319 					cp->un.value.level
   1320 					    [AUDIO_MIXER_LEVEL_RIGHT] = val;
   1321 				} else
   1322 					cp->un.value.level
   1323 					    [AUDIO_MIXER_LEVEL_MONO] = val;
   1324 			}
   1325 		}
   1326 
   1327 		return error;
   1328 	}
   1329 
   1330 	switch (cp->dev) {
   1331 	case SV_RECORD_SOURCE:
   1332 		if (cp->type != AUDIO_MIXER_ENUM) {
   1333 			error = EINVAL;
   1334 			break;
   1335 		}
   1336 
   1337 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL);
   1338 		cp->un.ord = ((reg & SV_REC_SOURCE_MASK) >> SV_REC_SOURCE_SHIFT);
   1339 
   1340 		break;
   1341 
   1342 	case SV_RECORD_GAIN:
   1343 		if (cp->type != AUDIO_MIXER_VALUE) {
   1344 			error = EINVAL;
   1345 			break;
   1346 		}
   1347 		if (cp->un.value.num_channels != 1) {
   1348 			error = EINVAL;
   1349 			break;
   1350 		}
   1351 
   1352 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL) & SV_REC_GAIN_MASK;
   1353 		cp->un.value.level[AUDIO_MIXER_LEVEL_MONO] =
   1354 			(((unsigned int)reg) * AUDIO_MAX_GAIN) / SV_REC_GAIN_MASK;
   1355 
   1356 		break;
   1357 
   1358 	case SV_MIC_BOOST:
   1359 		if (cp->type != AUDIO_MIXER_ENUM) {
   1360 			error = EINVAL;
   1361 			break;
   1362 		}
   1363 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL);
   1364 		cp->un.ord = ((reg & SV_MIC_BOOST_BIT) ? 1 : 0);
   1365 		break;
   1366 
   1367 	case SV_SRS_MODE:
   1368 		if (cp->type != AUDIO_MIXER_ENUM) {
   1369 			error = EINVAL;
   1370 			break;
   1371 		}
   1372 		reg = sv_read_indirect(sc, SV_SRS_SPACE_CONTROL);
   1373 		cp->un.ord = ((reg & SV_SRS_SPACE_ONOFF) ? 0 : 1);
   1374 		break;
   1375 	default:
   1376 		error = EINVAL;
   1377 		break;
   1378 	}
   1379 
   1380 	mutex_spin_exit(&sc->sc_intr_lock);
   1381 	return error;
   1382 }
   1383 
   1384 static void
   1385 sv_init_mixer(struct sv_softc *sc)
   1386 {
   1387 	mixer_ctrl_t cp;
   1388 	int i;
   1389 
   1390 	cp.type = AUDIO_MIXER_ENUM;
   1391 	cp.dev = SV_SRS_MODE;
   1392 	cp.un.ord = 0;
   1393 
   1394 	sv_mixer_set_port(sc, &cp);
   1395 
   1396 	for (i = 0; i < ARRAY_SIZE(ports); i++) {
   1397 		if (!strcmp(ports[i].audio, AudioNdac)) {
   1398 			cp.type = AUDIO_MIXER_ENUM;
   1399 			cp.dev = SV_FIRST_MIXER + i * SV_DEVICES_PER_PORT + 1;
   1400 			cp.un.ord = 0;
   1401 			sv_mixer_set_port(sc, &cp);
   1402 			break;
   1403 		}
   1404 	}
   1405 }
   1406 
   1407 static void *
   1408 sv_malloc(void *addr, int direction, size_t size)
   1409 {
   1410 	struct sv_softc *sc;
   1411 	struct sv_dma *p;
   1412 	int error;
   1413 
   1414 	sc = addr;
   1415 	p = kmem_alloc(sizeof(*p), KM_SLEEP);
   1416 	if (p == NULL)
   1417 		return NULL;
   1418 	error = sv_allocmem(sc, size, 16, direction, p);
   1419 	if (error) {
   1420 		kmem_free(p, sizeof(*p));
   1421 		return 0;
   1422 	}
   1423 	p->next = sc->sc_dmas;
   1424 	sc->sc_dmas = p;
   1425 	return KERNADDR(p);
   1426 }
   1427 
   1428 static void
   1429 sv_free(void *addr, void *ptr, size_t size)
   1430 {
   1431 	struct sv_softc *sc;
   1432 	struct sv_dma **pp, *p;
   1433 
   1434 	sc = addr;
   1435 	for (pp = &sc->sc_dmas; (p = *pp) != NULL; pp = &p->next) {
   1436 		if (KERNADDR(p) == ptr) {
   1437 			sv_freemem(sc, p);
   1438 			*pp = p->next;
   1439 			kmem_free(p, sizeof(*p));
   1440 			return;
   1441 		}
   1442 	}
   1443 }
   1444 
   1445 static size_t
   1446 sv_round_buffersize(void *addr, int direction, size_t size)
   1447 {
   1448 
   1449 	return size;
   1450 }
   1451 
   1452 static paddr_t
   1453 sv_mappage(void *addr, void *mem, off_t off, int prot)
   1454 {
   1455 	struct sv_softc *sc;
   1456 	struct sv_dma *p;
   1457 
   1458 	sc = addr;
   1459 	if (off < 0)
   1460 		return -1;
   1461 	for (p = sc->sc_dmas; p && KERNADDR(p) != mem; p = p->next)
   1462 		continue;
   1463 	if (p == NULL)
   1464 		return -1;
   1465 	return bus_dmamem_mmap(sc->sc_dmatag, p->segs, p->nsegs,
   1466 			       off, prot, BUS_DMA_WAITOK);
   1467 }
   1468 
   1469 static int
   1470 sv_get_props(void *addr)
   1471 {
   1472 	return AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
   1473 }
   1474 
   1475 static void
   1476 sv_get_locks(void *addr, kmutex_t **intr, kmutex_t **thread)
   1477 {
   1478 	struct sv_softc *sc;
   1479 
   1480 	sc = addr;
   1481 	*intr = &sc->sc_intr_lock;
   1482 	*thread = &sc->sc_lock;
   1483 }
   1484