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sv.c revision 1.20
      1 /*      $NetBSD: sv.c,v 1.20 2003/02/20 12:24:05 hannken 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  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *        This product includes software developed by the NetBSD
     22  *        Foundation, Inc. and its contributors.
     23  * 4. Neither the name of The NetBSD Foundation nor the names of its
     24  *    contributors may be used to endorse or promote products derived
     25  *    from this software without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     37  * POSSIBILITY OF SUCH DAMAGE.
     38  */
     39 
     40 /*
     41  * Copyright (c) 1998 Constantine Paul Sapuntzakis
     42  * All rights reserved
     43  *
     44  * Author: Constantine Paul Sapuntzakis (csapuntz (at) cvs.openbsd.org)
     45  *
     46  * Redistribution and use in source and binary forms, with or without
     47  * modification, are permitted provided that the following conditions
     48  * are met:
     49  * 1. Redistributions of source code must retain the above copyright
     50  *    notice, this list of conditions and the following disclaimer.
     51  * 2. Redistributions in binary form must reproduce the above copyright
     52  *    notice, this list of conditions and the following disclaimer in the
     53  *    documentation and/or other materials provided with the distribution.
     54  * 3. The author's name or those of the contributors may be used to
     55  *    endorse or promote products derived from this software without
     56  *    specific prior written permission.
     57  *
     58  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTORS
     59  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     60  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     61  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     62  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     63  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     64  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     65  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     66  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     67  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     68  * POSSIBILITY OF SUCH DAMAGE.
     69  */
     70 
     71 /*
     72  * S3 SonicVibes driver
     73  *   Heavily based on the eap driver by Lennart Augustsson
     74  */
     75 
     76 #include <sys/cdefs.h>
     77 __KERNEL_RCSID(0, "$NetBSD: sv.c,v 1.20 2003/02/20 12:24:05 hannken Exp $");
     78 
     79 #include <sys/param.h>
     80 #include <sys/systm.h>
     81 #include <sys/kernel.h>
     82 #include <sys/malloc.h>
     83 #include <sys/device.h>
     84 
     85 #include <dev/pci/pcireg.h>
     86 #include <dev/pci/pcivar.h>
     87 #include <dev/pci/pcidevs.h>
     88 
     89 #include <sys/audioio.h>
     90 #include <dev/audio_if.h>
     91 #include <dev/mulaw.h>
     92 #include <dev/auconv.h>
     93 
     94 #include <dev/ic/i8237reg.h>
     95 #include <dev/pci/svreg.h>
     96 #include <dev/pci/svvar.h>
     97 
     98 #include <machine/bus.h>
     99 
    100 /* XXX
    101  * The SonicVibes DMA is broken and only works on 24-bit addresses.
    102  * As long as bus_dmamem_alloc_range() is missing we use the ISA
    103  * dma tag on i386.
    104  */
    105 #if defined(i386)
    106 #include "isa.h"
    107 #if NISA > 0
    108 #include <dev/isa/isavar.h>
    109 #endif
    110 #endif
    111 
    112 #ifdef AUDIO_DEBUG
    113 #define DPRINTF(x)	if (svdebug) printf x
    114 #define DPRINTFN(n,x)	if (svdebug>(n)) printf x
    115 int	svdebug = 0;
    116 #else
    117 #define DPRINTF(x)
    118 #define DPRINTFN(n,x)
    119 #endif
    120 
    121 int	sv_match __P((struct device *, struct cfdata *, void *));
    122 void	sv_attach __P((struct device *, struct device *, void *));
    123 int	sv_intr __P((void *));
    124 
    125 struct sv_dma {
    126 	bus_dmamap_t map;
    127 	caddr_t addr;
    128 	bus_dma_segment_t segs[1];
    129 	int nsegs;
    130 	size_t size;
    131 	struct sv_dma *next;
    132 };
    133 #define DMAADDR(p) ((p)->map->dm_segs[0].ds_addr)
    134 #define KERNADDR(p) ((void *)((p)->addr))
    135 
    136 CFATTACH_DECL(sv, sizeof(struct sv_softc),
    137     sv_match, sv_attach, NULL, NULL);
    138 
    139 struct audio_device sv_device = {
    140 	"S3 SonicVibes",
    141 	"",
    142 	"sv"
    143 };
    144 
    145 #define ARRAY_SIZE(foo)  ((sizeof(foo)) / sizeof(foo[0]))
    146 
    147 int	sv_allocmem __P((struct sv_softc *, size_t, size_t, int, struct sv_dma *));
    148 int	sv_freemem __P((struct sv_softc *, struct sv_dma *));
    149 
    150 int	sv_open __P((void *, int));
    151 void	sv_close __P((void *));
    152 int	sv_query_encoding __P((void *, struct audio_encoding *));
    153 int	sv_set_params __P((void *, int, int, struct audio_params *, struct audio_params *));
    154 int	sv_round_blocksize __P((void *, int));
    155 int	sv_trigger_output __P((void *, void *, void *, int, void (*)(void *),
    156 	    void *, struct audio_params *));
    157 int	sv_trigger_input __P((void *, void *, void *, int, void (*)(void *),
    158 	    void *, struct audio_params *));
    159 int	sv_halt_output __P((void *));
    160 int	sv_halt_input __P((void *));
    161 int	sv_getdev __P((void *, struct audio_device *));
    162 int	sv_mixer_set_port __P((void *, mixer_ctrl_t *));
    163 int	sv_mixer_get_port __P((void *, mixer_ctrl_t *));
    164 int	sv_query_devinfo __P((void *, mixer_devinfo_t *));
    165 void   *sv_malloc __P((void *, int, size_t, struct malloc_type *, int));
    166 void	sv_free __P((void *, void *, struct malloc_type *));
    167 size_t	sv_round_buffersize __P((void *, int, size_t));
    168 paddr_t	sv_mappage __P((void *, void *, off_t, int));
    169 int	sv_get_props __P((void *));
    170 
    171 #ifdef AUDIO_DEBUG
    172 void    sv_dumpregs __P((struct sv_softc *sc));
    173 #endif
    174 
    175 struct audio_hw_if sv_hw_if = {
    176 	sv_open,
    177 	sv_close,
    178 	NULL,
    179 	sv_query_encoding,
    180 	sv_set_params,
    181 	sv_round_blocksize,
    182 	NULL,
    183 	NULL,
    184 	NULL,
    185 	NULL,
    186 	NULL,
    187 	sv_halt_output,
    188 	sv_halt_input,
    189 	NULL,
    190 	sv_getdev,
    191 	NULL,
    192 	sv_mixer_set_port,
    193 	sv_mixer_get_port,
    194 	sv_query_devinfo,
    195 	sv_malloc,
    196 	sv_free,
    197 	sv_round_buffersize,
    198 	sv_mappage,
    199 	sv_get_props,
    200 	sv_trigger_output,
    201 	sv_trigger_input,
    202 	NULL,
    203 };
    204 
    205 
    206 static u_int8_t sv_read __P((struct sv_softc *, u_int8_t));
    207 static u_int8_t sv_read_indirect __P((struct sv_softc *, u_int8_t));
    208 static void sv_write __P((struct sv_softc *, u_int8_t, u_int8_t ));
    209 static void sv_write_indirect __P((struct sv_softc *, u_int8_t, u_int8_t ));
    210 static void sv_init_mixer __P((struct sv_softc *));
    211 
    212 static void sv_defer __P((struct device *self));
    213 
    214 static void
    215 sv_write (sc, reg, val)
    216 	struct sv_softc *sc;
    217 	u_int8_t reg, 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 u_int8_t
    225 sv_read(sc, reg)
    226 	struct sv_softc *sc;
    227 	u_int8_t reg;
    228 
    229 {
    230 	u_int8_t val;
    231 
    232 	val = bus_space_read_1(sc->sc_iot, sc->sc_ioh, reg);
    233 	DPRINTFN(8,("sv_read(0x%x) = 0x%x\n", reg, val));
    234 	return val;
    235 }
    236 
    237 static u_int8_t
    238 sv_read_indirect(sc, reg)
    239 	struct sv_softc *sc;
    240 	u_int8_t reg;
    241 {
    242 	u_int8_t val;
    243 	int s = splaudio();
    244 
    245 	sv_write(sc, SV_CODEC_IADDR, reg & SV_IADDR_MASK);
    246 	val = sv_read(sc, SV_CODEC_IDATA);
    247 	splx(s);
    248 	return (val);
    249 }
    250 
    251 static void
    252 sv_write_indirect(sc, reg, val)
    253 	struct sv_softc *sc;
    254 	u_int8_t reg, val;
    255 {
    256 	u_int8_t iaddr = reg & SV_IADDR_MASK;
    257 	int s = splaudio();
    258 
    259 	if (reg == SV_DMA_DATA_FORMAT)
    260 		iaddr |= SV_IADDR_MCE;
    261 
    262 	sv_write(sc, SV_CODEC_IADDR, iaddr);
    263 	sv_write(sc, SV_CODEC_IDATA, val);
    264 	splx(s);
    265 }
    266 
    267 int
    268 sv_match(parent, match, aux)
    269 	struct device *parent;
    270 	struct cfdata *match;
    271 	void *aux;
    272 {
    273 	struct pci_attach_args *pa = aux;
    274 
    275 	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_S3 &&
    276 	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_S3_SONICVIBES)
    277 		return (1);
    278 
    279 	return (0);
    280 }
    281 
    282 int pci_alloc_io __P((pci_chipset_tag_t pc, pcitag_t pt,
    283 		      int pcioffs,
    284 		      bus_space_tag_t iot, bus_size_t size,
    285 		      bus_size_t align, bus_size_t bound, int flags,
    286 		      bus_space_handle_t *ioh));
    287 
    288 static pcireg_t pci_io_alloc_low, pci_io_alloc_high;
    289 
    290 int
    291 pci_alloc_io(pc, pt, pcioffs, iot, size, align, bound, flags, ioh)
    292 	pci_chipset_tag_t pc;
    293 	pcitag_t pt;
    294 	int pcioffs;
    295 	bus_space_tag_t iot;
    296 	bus_size_t size;
    297 	bus_size_t align;
    298 	bus_size_t bound;
    299 	int flags;
    300 	bus_space_handle_t *ioh;
    301 {
    302 	bus_addr_t addr;
    303 	int error;
    304 
    305 	error = bus_space_alloc(iot, pci_io_alloc_low, pci_io_alloc_high,
    306 				size, align, bound, flags, &addr, ioh);
    307 	if (error)
    308 		return(error);
    309 
    310 	pci_conf_write(pc, pt, pcioffs, addr);
    311 	return (0);
    312 }
    313 
    314 /*
    315  * Allocate IO addresses when all other configuration is done.
    316  */
    317 void
    318 sv_defer(self)
    319 	struct device *self;
    320 {
    321 	struct sv_softc *sc = (struct sv_softc *)self;
    322 	pci_chipset_tag_t pc = sc->sc_pa.pa_pc;
    323 	pcitag_t pt = sc->sc_pa.pa_tag;
    324 	pcireg_t dmaio;
    325 
    326 	DPRINTF(("sv_defer: %p\n", sc));
    327 
    328 	/* XXX
    329 	 * Get a reasonable default for the I/O range.
    330 	 * Assume the range around SB_PORTBASE is valid on this PCI bus.
    331 	 */
    332 	pci_io_alloc_low = pci_conf_read(pc, pt, SV_SB_PORTBASE_SLOT);
    333 	pci_io_alloc_high = pci_io_alloc_low + 0x1000;
    334 
    335 	if (pci_alloc_io(pc, pt, SV_DMAA_CONFIG_OFF,
    336 			  sc->sc_iot, SV_DMAA_SIZE, SV_DMAA_ALIGN, 0,
    337 			  0, &sc->sc_dmaa_ioh)) {
    338 		printf("sv_attach: cannot allocate DMA A range\n");
    339 		return;
    340 	}
    341 	dmaio = pci_conf_read(pc, pt, SV_DMAA_CONFIG_OFF);
    342 	DPRINTF(("sv_attach: addr a dmaio=0x%lx\n", (u_long)dmaio));
    343 	pci_conf_write(pc, pt, SV_DMAA_CONFIG_OFF,
    344 		       dmaio | SV_DMA_CHANNEL_ENABLE | SV_DMAA_EXTENDED_ADDR);
    345 
    346 	if (pci_alloc_io(pc, pt, SV_DMAC_CONFIG_OFF,
    347 			  sc->sc_iot, SV_DMAC_SIZE, SV_DMAC_ALIGN, 0,
    348 			  0, &sc->sc_dmac_ioh)) {
    349 		printf("sv_attach: cannot allocate DMA C range\n");
    350 		return;
    351 	}
    352 	dmaio = pci_conf_read(pc, pt, SV_DMAC_CONFIG_OFF);
    353 	DPRINTF(("sv_attach: addr c dmaio=0x%lx\n", (u_long)dmaio));
    354 	pci_conf_write(pc, pt, SV_DMAC_CONFIG_OFF,
    355 		       dmaio | SV_DMA_CHANNEL_ENABLE);
    356 
    357 	sc->sc_dmaset = 1;
    358 }
    359 
    360 void
    361 sv_attach(parent, self, aux)
    362 	struct device *parent, *self;
    363 	void *aux;
    364 {
    365 	struct sv_softc *sc = (struct sv_softc *)self;
    366 	struct pci_attach_args *pa = aux;
    367 	pci_chipset_tag_t pc = pa->pa_pc;
    368 	pcitag_t pt = pa->pa_tag;
    369 	pci_intr_handle_t ih;
    370 	pcireg_t csr;
    371 	char const *intrstr;
    372 	u_int8_t reg;
    373 	struct audio_attach_args arg;
    374 
    375 	printf ("\n");
    376 
    377 	/* Map I/O registers */
    378 	if (pci_mapreg_map(pa, SV_ENHANCED_PORTBASE_SLOT,
    379 			   PCI_MAPREG_TYPE_IO, 0,
    380 			   &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) {
    381 		printf("%s: can't map enhanced i/o space\n",
    382 		       sc->sc_dev.dv_xname);
    383 		return;
    384 	}
    385 	if (pci_mapreg_map(pa, SV_FM_PORTBASE_SLOT,
    386 			   PCI_MAPREG_TYPE_IO, 0,
    387 			   &sc->sc_opliot, &sc->sc_oplioh, NULL, NULL)) {
    388 		printf("%s: can't map FM i/o space\n", sc->sc_dev.dv_xname);
    389 		return;
    390 	}
    391 	if (pci_mapreg_map(pa, SV_MIDI_PORTBASE_SLOT,
    392 			   PCI_MAPREG_TYPE_IO, 0,
    393 			   &sc->sc_midiiot, &sc->sc_midiioh, NULL, NULL)) {
    394 		printf("%s: can't map MIDI i/o space\n", sc->sc_dev.dv_xname);
    395 		return;
    396 	}
    397 	DPRINTF(("sv: IO ports: enhanced=0x%x, OPL=0x%x, MIDI=0x%x\n",
    398 		 (int)sc->sc_ioh, (int)sc->sc_oplioh, (int)sc->sc_midiioh));
    399 
    400 #if defined(alpha)
    401 	/* XXX Force allocation through the SGMAP. */
    402 	sc->sc_dmatag = alphabus_dma_get_tag(pa->pa_dmat, ALPHA_BUS_ISA);
    403 #elif defined(i386) && NISA > 0
    404 /* XXX
    405  * The SonicVibes DMA is broken and only works on 24-bit addresses.
    406  * As long as bus_dmamem_alloc_range() is missing we use the ISA
    407  * dma tag on i386.
    408  */
    409 	sc->sc_dmatag = &isa_bus_dma_tag;
    410 #else
    411 	sc->sc_dmatag = pa->pa_dmat;
    412 #endif
    413 
    414 	pci_conf_write(pc, pt, SV_DMAA_CONFIG_OFF, SV_DMAA_EXTENDED_ADDR);
    415 	pci_conf_write(pc, pt, SV_DMAC_CONFIG_OFF, 0);
    416 
    417 	/* Enable the device. */
    418 	csr = pci_conf_read(pc, pt, PCI_COMMAND_STATUS_REG);
    419 	pci_conf_write(pc, pt, PCI_COMMAND_STATUS_REG,
    420 		       csr | PCI_COMMAND_MASTER_ENABLE);
    421 
    422 	sv_write_indirect(sc, SV_ANALOG_POWER_DOWN_CONTROL, 0);
    423 	sv_write_indirect(sc, SV_DIGITAL_POWER_DOWN_CONTROL, 0);
    424 
    425 	/* initialize codec registers */
    426 	reg = sv_read(sc, SV_CODEC_CONTROL);
    427 	reg |= SV_CTL_RESET;
    428 	sv_write(sc, SV_CODEC_CONTROL, reg);
    429 	delay(50);
    430 
    431 	reg = sv_read(sc, SV_CODEC_CONTROL);
    432 	reg &= ~SV_CTL_RESET;
    433 	reg |= SV_CTL_INTA | SV_CTL_ENHANCED;
    434 
    435 	/* This write clears the reset */
    436 	sv_write(sc, SV_CODEC_CONTROL, reg);
    437 	delay(50);
    438 
    439 	/* This write actually shoves the new values in */
    440 	sv_write(sc, SV_CODEC_CONTROL, reg);
    441 
    442 	DPRINTF(("sv_attach: control=0x%x\n", sv_read(sc, SV_CODEC_CONTROL)));
    443 
    444 	/* Enable DMA interrupts */
    445 	reg = sv_read(sc, SV_CODEC_INTMASK);
    446 	reg &= ~(SV_INTMASK_DMAA | SV_INTMASK_DMAC);
    447 	reg |= SV_INTMASK_UD | SV_INTMASK_SINT | SV_INTMASK_MIDI;
    448 	sv_write(sc, SV_CODEC_INTMASK, reg);
    449 
    450 	sv_read(sc, SV_CODEC_STATUS);
    451 
    452 	/* Map and establish the interrupt. */
    453 	if (pci_intr_map(pa, &ih)) {
    454 		printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname);
    455 		return;
    456 	}
    457 	intrstr = pci_intr_string(pc, ih);
    458 	sc->sc_ih = pci_intr_establish(pc, ih, IPL_AUDIO, sv_intr, sc);
    459 	if (sc->sc_ih == NULL) {
    460 		printf("%s: couldn't establish interrupt",
    461 		       sc->sc_dev.dv_xname);
    462 		if (intrstr != NULL)
    463 			printf(" at %s", intrstr);
    464 		printf("\n");
    465 		return;
    466 	}
    467 	printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
    468 	printf("%s: rev %d", sc->sc_dev.dv_xname,
    469 	       sv_read_indirect(sc, SV_REVISION_LEVEL));
    470 	if (sv_read(sc, SV_CODEC_CONTROL) & SV_CTL_MD1)
    471 		printf(", reverb SRAM present");
    472 	if (!(sv_read_indirect(sc, SV_WAVETABLE_SOURCE_SELECT) & SV_WSS_WT0))
    473 		printf(", wavetable ROM present");
    474 	printf("\n");
    475 
    476 	sv_init_mixer(sc);
    477 
    478 	audio_attach_mi(&sv_hw_if, sc, &sc->sc_dev);
    479 
    480 	arg.type = AUDIODEV_TYPE_OPL;
    481 	arg.hwif = 0;
    482 	arg.hdl = 0;
    483 	(void)config_found(&sc->sc_dev, &arg, audioprint);
    484 
    485 	sc->sc_pa = *pa;	/* for deferred setup */
    486 	config_defer(self, sv_defer);
    487 }
    488 
    489 #ifdef AUDIO_DEBUG
    490 void
    491 sv_dumpregs(sc)
    492 	struct sv_softc *sc;
    493 {
    494 	int idx;
    495 
    496 #if 0
    497 	for (idx = 0; idx < 0x50; idx += 4)
    498 		printf ("%02x = %x\n", idx,
    499 			pci_conf_read(pa->pa_pc, pa->pa_tag, idx));
    500 #endif
    501 
    502 	for (idx = 0; idx < 6; idx++)
    503 		printf ("REG %02x = %02x\n", idx, sv_read(sc, idx));
    504 
    505 	for (idx = 0; idx < 0x32; idx++)
    506 		printf ("IREG %02x = %02x\n", idx, sv_read_indirect(sc, idx));
    507 
    508 	for (idx = 0; idx < 0x10; idx++)
    509 		printf ("DMA %02x = %02x\n", idx,
    510 			bus_space_read_1(sc->sc_iot, sc->sc_dmaa_ioh, idx));
    511 }
    512 #endif
    513 
    514 int
    515 sv_intr(p)
    516 	void *p;
    517 {
    518 	struct sv_softc *sc = p;
    519 	u_int8_t intr;
    520 
    521 	intr = sv_read(sc, SV_CODEC_STATUS);
    522 	DPRINTFN(5,("sv_intr: intr=0x%x\n", intr));
    523 
    524 	if (!(intr & (SV_INTSTATUS_DMAA | SV_INTSTATUS_DMAC)))
    525 		return (0);
    526 
    527 	if (intr & SV_INTSTATUS_DMAA) {
    528 		if (sc->sc_pintr)
    529 			sc->sc_pintr(sc->sc_parg);
    530 	}
    531 
    532 	if (intr & SV_INTSTATUS_DMAC) {
    533 		if (sc->sc_rintr)
    534 			sc->sc_rintr(sc->sc_rarg);
    535 	}
    536 
    537 	return (1);
    538 }
    539 
    540 int
    541 sv_allocmem(sc, size, align, direction, p)
    542 	struct sv_softc *sc;
    543 	size_t size;
    544 	size_t align;
    545 	int direction;
    546 	struct sv_dma *p;
    547 {
    548 	int error;
    549 
    550 	p->size = size;
    551 	error = bus_dmamem_alloc(sc->sc_dmatag, p->size, align, 0,
    552 				 p->segs, ARRAY_SIZE(p->segs),
    553 				 &p->nsegs, BUS_DMA_NOWAIT);
    554 	if (error)
    555 		return (error);
    556 
    557 	error = bus_dmamem_map(sc->sc_dmatag, p->segs, p->nsegs, p->size,
    558 			       &p->addr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
    559 	if (error)
    560 		goto free;
    561 
    562 	error = bus_dmamap_create(sc->sc_dmatag, p->size, 1, p->size,
    563 				  0, BUS_DMA_NOWAIT, &p->map);
    564 	if (error)
    565 		goto unmap;
    566 
    567 	error = bus_dmamap_load(sc->sc_dmatag, p->map, p->addr, p->size, NULL,
    568 				BUS_DMA_NOWAIT |
    569                                 (direction == AUMODE_RECORD) ? BUS_DMA_READ : BUS_DMA_WRITE);
    570 	if (error)
    571 		goto destroy;
    572 	DPRINTF(("sv_allocmem: pa=%lx va=%lx pba=%lx\n",
    573 	    (long)p->segs[0].ds_addr, (long)KERNADDR(p), (long)DMAADDR(p)));
    574 	return (0);
    575 
    576 destroy:
    577 	bus_dmamap_destroy(sc->sc_dmatag, p->map);
    578 unmap:
    579 	bus_dmamem_unmap(sc->sc_dmatag, p->addr, p->size);
    580 free:
    581 	bus_dmamem_free(sc->sc_dmatag, p->segs, p->nsegs);
    582 	return (error);
    583 }
    584 
    585 int
    586 sv_freemem(sc, p)
    587 	struct sv_softc *sc;
    588 	struct sv_dma *p;
    589 {
    590 	bus_dmamap_unload(sc->sc_dmatag, p->map);
    591 	bus_dmamap_destroy(sc->sc_dmatag, p->map);
    592 	bus_dmamem_unmap(sc->sc_dmatag, p->addr, p->size);
    593 	bus_dmamem_free(sc->sc_dmatag, p->segs, p->nsegs);
    594 	return (0);
    595 }
    596 
    597 int
    598 sv_open(addr, flags)
    599 	void *addr;
    600 	int flags;
    601 {
    602 	struct sv_softc *sc = addr;
    603 
    604 	DPRINTF(("sv_open\n"));
    605 	if (!sc->sc_dmaset)
    606 		return (ENXIO);
    607 	sc->sc_pintr = 0;
    608 	sc->sc_rintr = 0;
    609 
    610 	return (0);
    611 }
    612 
    613 /*
    614  * Close function is called at splaudio().
    615  */
    616 void
    617 sv_close(addr)
    618 	void *addr;
    619 {
    620 	struct sv_softc *sc = addr;
    621 
    622 	DPRINTF(("sv_close\n"));
    623 	sv_halt_output(sc);
    624 	sv_halt_input(sc);
    625 
    626 	sc->sc_pintr = 0;
    627 	sc->sc_rintr = 0;
    628 }
    629 
    630 int
    631 sv_query_encoding(addr, fp)
    632 	void *addr;
    633 	struct audio_encoding *fp;
    634 {
    635 	switch (fp->index) {
    636 	case 0:
    637 		strcpy(fp->name, AudioEulinear);
    638 		fp->encoding = AUDIO_ENCODING_ULINEAR;
    639 		fp->precision = 8;
    640 		fp->flags = 0;
    641 		return (0);
    642 	case 1:
    643 		strcpy(fp->name, AudioEmulaw);
    644 		fp->encoding = AUDIO_ENCODING_ULAW;
    645 		fp->precision = 8;
    646 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    647 		return (0);
    648 	case 2:
    649 		strcpy(fp->name, AudioEalaw);
    650 		fp->encoding = AUDIO_ENCODING_ALAW;
    651 		fp->precision = 8;
    652 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    653 		return (0);
    654 	case 3:
    655 		strcpy(fp->name, AudioEslinear);
    656 		fp->encoding = AUDIO_ENCODING_SLINEAR;
    657 		fp->precision = 8;
    658 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    659 		return (0);
    660 	case 4:
    661 		strcpy(fp->name, AudioEslinear_le);
    662 		fp->encoding = AUDIO_ENCODING_SLINEAR_LE;
    663 		fp->precision = 16;
    664 		fp->flags = 0;
    665 		return (0);
    666 	case 5:
    667 		strcpy(fp->name, AudioEulinear_le);
    668 		fp->encoding = AUDIO_ENCODING_ULINEAR_LE;
    669 		fp->precision = 16;
    670 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    671 		return (0);
    672 	case 6:
    673 		strcpy(fp->name, AudioEslinear_be);
    674 		fp->encoding = AUDIO_ENCODING_SLINEAR_BE;
    675 		fp->precision = 16;
    676 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    677 		return (0);
    678 	case 7:
    679 		strcpy(fp->name, AudioEulinear_be);
    680 		fp->encoding = AUDIO_ENCODING_ULINEAR_BE;
    681 		fp->precision = 16;
    682 		fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
    683 		return (0);
    684 	default:
    685 		return (EINVAL);
    686 	}
    687 }
    688 
    689 int
    690 sv_set_params(addr, setmode, usemode, play, rec)
    691 	void *addr;
    692 	int setmode, usemode;
    693 	struct audio_params *play, *rec;
    694 {
    695 	struct sv_softc *sc = addr;
    696 	struct audio_params *p = NULL;
    697 	int mode;
    698 	u_int32_t val;
    699 
    700 	/*
    701 	 * This device only has one clock, so make the sample rates match.
    702 	 */
    703 	if (play->sample_rate != rec->sample_rate &&
    704 	    usemode == (AUMODE_PLAY | AUMODE_RECORD)) {
    705 		if (setmode == AUMODE_PLAY) {
    706 			rec->sample_rate = play->sample_rate;
    707 			setmode |= AUMODE_RECORD;
    708 		} else if (setmode == AUMODE_RECORD) {
    709 			play->sample_rate = rec->sample_rate;
    710 			setmode |= AUMODE_PLAY;
    711 		} else
    712 			return (EINVAL);
    713 	}
    714 
    715 	for (mode = AUMODE_RECORD; mode != -1;
    716 	     mode = mode == AUMODE_RECORD ? AUMODE_PLAY : -1) {
    717 		if ((setmode & mode) == 0)
    718 			continue;
    719 
    720 		p = mode == AUMODE_PLAY ? play : rec;
    721 
    722 		if (p->sample_rate < 2000 || p->sample_rate > 48000 ||
    723 		    (p->precision != 8 && p->precision != 16) ||
    724 		    (p->channels != 1 && p->channels != 2))
    725 			return (EINVAL);
    726 
    727 		p->factor = 1;
    728 		p->sw_code = 0;
    729 		switch (p->encoding) {
    730 		case AUDIO_ENCODING_SLINEAR_BE:
    731 			if (p->precision == 16)
    732 				p->sw_code = swap_bytes;
    733 			else
    734 				p->sw_code = change_sign8;
    735 			break;
    736 		case AUDIO_ENCODING_SLINEAR_LE:
    737 			if (p->precision != 16)
    738 				p->sw_code = change_sign8;
    739 			break;
    740 		case AUDIO_ENCODING_ULINEAR_BE:
    741 			if (p->precision == 16) {
    742 				if (mode == AUMODE_PLAY)
    743 					p->sw_code = swap_bytes_change_sign16_le;
    744 				else
    745 					p->sw_code = change_sign16_swap_bytes_le;
    746 			}
    747 			break;
    748 		case AUDIO_ENCODING_ULINEAR_LE:
    749 			if (p->precision == 16)
    750 				p->sw_code = change_sign16_le;
    751 			break;
    752 		case AUDIO_ENCODING_ULAW:
    753 			if (mode == AUMODE_PLAY) {
    754 				p->factor = 2;
    755 				p->sw_code = mulaw_to_slinear16_le;
    756 			} else
    757 				p->sw_code = ulinear8_to_mulaw;
    758 			break;
    759 		case AUDIO_ENCODING_ALAW:
    760 			if (mode == AUMODE_PLAY) {
    761 				p->factor = 2;
    762 				p->sw_code = alaw_to_slinear16_le;
    763 			} else
    764 				p->sw_code = ulinear8_to_alaw;
    765 			break;
    766 		default:
    767 			return (EINVAL);
    768 		}
    769 	}
    770 
    771 	val = p->sample_rate * 65536 / 48000;
    772 	/*
    773 	 * If the sample rate is exactly 48KHz, the fraction would overflow the
    774 	 * register, so we have to bias it.  This causes a little clock drift.
    775 	 * The drift is below normal crystal tolerance (.0001%), so although
    776 	 * this seems a little silly, we can pretty much ignore it.
    777 	 * (I tested the output speed with values of 1-20, just to be sure this
    778 	 * register isn't *supposed* to have a bias.  It isn't.)
    779 	 * - mycroft
    780 	 */
    781 	if (val > 65535)
    782 		val = 65535;
    783 
    784 	sv_write_indirect(sc, SV_PCM_SAMPLE_RATE_0, val & 0xff);
    785 	sv_write_indirect(sc, SV_PCM_SAMPLE_RATE_1, val >> 8);
    786 
    787 #define F_REF 24576000
    788 
    789 #define ABS(x) (((x) < 0) ? (-x) : (x))
    790 
    791 	if (setmode & AUMODE_RECORD) {
    792 		/* The ADC reference frequency (f_out) is 512 * sample rate */
    793 
    794 		/* f_out is dervied from the 24.576MHZ crystal by three values:
    795 		   M & N & R. The equation is as follows:
    796 
    797 		   f_out = (m + 2) * f_ref / ((n + 2) * (2 ^ a))
    798 
    799 		   with the constraint that:
    800 
    801 		   80 MhZ < (m + 2) / (n + 2) * f_ref <= 150Mhz
    802 		   and n, m >= 1
    803 		*/
    804 
    805 		int  goal_f_out = 512 * rec->sample_rate;
    806 		int  a, n, m, best_n = 0, best_m = 0, best_error = 10000000;
    807 		int  pll_sample;
    808 		int  error;
    809 
    810 		for (a = 0; a < 8; a++) {
    811 			if ((goal_f_out * (1 << a)) >= 80000000)
    812 				break;
    813 		}
    814 
    815 		/* a != 8 because sample_rate >= 2000 */
    816 
    817 		for (n = 33; n > 2; n--) {
    818 			m = (goal_f_out * n * (1 << a)) / F_REF;
    819 			if ((m > 257) || (m < 3))
    820 				continue;
    821 
    822 			pll_sample = (m * F_REF) / (n * (1 << a));
    823 			pll_sample /= 512;
    824 
    825 			/* Threshold might be good here */
    826 			error = pll_sample - rec->sample_rate;
    827 			error = ABS(error);
    828 
    829 			if (error < best_error) {
    830 				best_error = error;
    831 				best_n = n;
    832 				best_m = m;
    833 				if (error == 0) break;
    834 			}
    835 		}
    836 
    837 		best_n -= 2;
    838 		best_m -= 2;
    839 
    840 		sv_write_indirect(sc, SV_ADC_PLL_M, best_m);
    841 		sv_write_indirect(sc, SV_ADC_PLL_N,
    842 				  best_n | (a << SV_PLL_R_SHIFT));
    843 	}
    844 
    845 	return (0);
    846 }
    847 
    848 int
    849 sv_round_blocksize(addr, blk)
    850 	void *addr;
    851 	int blk;
    852 {
    853 	return (blk & -32);	/* keep good alignment */
    854 }
    855 
    856 int
    857 sv_trigger_output(addr, start, end, blksize, intr, arg, param)
    858 	void *addr;
    859 	void *start, *end;
    860 	int blksize;
    861 	void (*intr) __P((void *));
    862 	void *arg;
    863 	struct audio_params *param;
    864 {
    865 	struct sv_softc *sc = addr;
    866 	struct sv_dma *p;
    867 	u_int8_t mode;
    868 	int dma_count;
    869 
    870 	DPRINTFN(1, ("sv_trigger_output: sc=%p start=%p end=%p blksize=%d intr=%p(%p)\n",
    871 	    addr, start, end, blksize, intr, arg));
    872 	sc->sc_pintr = intr;
    873 	sc->sc_parg = arg;
    874 
    875 	mode = sv_read_indirect(sc, SV_DMA_DATA_FORMAT);
    876 	mode &= ~(SV_DMAA_FORMAT16 | SV_DMAA_STEREO);
    877 	if (param->precision * param->factor == 16)
    878 		mode |= SV_DMAA_FORMAT16;
    879 	if (param->channels == 2)
    880 		mode |= SV_DMAA_STEREO;
    881 	sv_write_indirect(sc, SV_DMA_DATA_FORMAT, mode);
    882 
    883 	for (p = sc->sc_dmas; p && KERNADDR(p) != start; p = p->next)
    884 		;
    885 	if (!p) {
    886 		printf("sv_trigger_output: bad addr %p\n", start);
    887 		return (EINVAL);
    888 	}
    889 
    890 	dma_count = ((char *)end - (char *)start) - 1;
    891 	DPRINTF(("sv_trigger_output: dma start loop input addr=%x cc=%d\n",
    892 	    (int)DMAADDR(p), dma_count));
    893 
    894 	bus_space_write_4(sc->sc_iot, sc->sc_dmaa_ioh, SV_DMA_ADDR0,
    895 			  DMAADDR(p));
    896 	bus_space_write_4(sc->sc_iot, sc->sc_dmaa_ioh, SV_DMA_COUNT0,
    897 			  dma_count);
    898 	bus_space_write_1(sc->sc_iot, sc->sc_dmaa_ioh, SV_DMA_MODE,
    899 			  DMA37MD_READ | DMA37MD_LOOP);
    900 
    901 	DPRINTF(("sv_trigger_output: current addr=%x\n",
    902 	    bus_space_read_4(sc->sc_iot, sc->sc_dmaa_ioh, SV_DMA_ADDR0)));
    903 
    904 	dma_count = blksize - 1;
    905 
    906 	sv_write_indirect(sc, SV_DMAA_COUNT1, dma_count >> 8);
    907 	sv_write_indirect(sc, SV_DMAA_COUNT0, dma_count & 0xFF);
    908 
    909 	mode = sv_read_indirect(sc, SV_PLAY_RECORD_ENABLE);
    910 	sv_write_indirect(sc, SV_PLAY_RECORD_ENABLE, mode | SV_PLAY_ENABLE);
    911 
    912 	return (0);
    913 }
    914 
    915 int
    916 sv_trigger_input(addr, start, end, blksize, intr, arg, param)
    917 	void *addr;
    918 	void *start, *end;
    919 	int blksize;
    920 	void (*intr) __P((void *));
    921 	void *arg;
    922 	struct audio_params *param;
    923 {
    924 	struct sv_softc *sc = addr;
    925 	struct sv_dma *p;
    926 	u_int8_t mode;
    927 	int dma_count;
    928 
    929 	DPRINTFN(1, ("sv_trigger_input: sc=%p start=%p end=%p blksize=%d intr=%p(%p)\n",
    930 	    addr, start, end, blksize, intr, arg));
    931 	sc->sc_rintr = intr;
    932 	sc->sc_rarg = arg;
    933 
    934 	mode = sv_read_indirect(sc, SV_DMA_DATA_FORMAT);
    935 	mode &= ~(SV_DMAC_FORMAT16 | SV_DMAC_STEREO);
    936 	if (param->precision * param->factor == 16)
    937 		mode |= SV_DMAC_FORMAT16;
    938 	if (param->channels == 2)
    939 		mode |= SV_DMAC_STEREO;
    940 	sv_write_indirect(sc, SV_DMA_DATA_FORMAT, mode);
    941 
    942 	for (p = sc->sc_dmas; p && KERNADDR(p) != start; p = p->next)
    943 		;
    944 	if (!p) {
    945 		printf("sv_trigger_input: bad addr %p\n", start);
    946 		return (EINVAL);
    947 	}
    948 
    949 	dma_count = (((char *)end - (char *)start) >> 1) - 1;
    950 	DPRINTF(("sv_trigger_input: dma start loop input addr=%x cc=%d\n",
    951 	    (int)DMAADDR(p), dma_count));
    952 
    953 	bus_space_write_4(sc->sc_iot, sc->sc_dmac_ioh, SV_DMA_ADDR0,
    954 			  DMAADDR(p));
    955 	bus_space_write_4(sc->sc_iot, sc->sc_dmac_ioh, SV_DMA_COUNT0,
    956 			  dma_count);
    957 	bus_space_write_1(sc->sc_iot, sc->sc_dmac_ioh, SV_DMA_MODE,
    958 			  DMA37MD_WRITE | DMA37MD_LOOP);
    959 
    960 	DPRINTF(("sv_trigger_input: current addr=%x\n",
    961 	    bus_space_read_4(sc->sc_iot, sc->sc_dmac_ioh, SV_DMA_ADDR0)));
    962 
    963 	dma_count = (blksize >> 1) - 1;
    964 
    965 	sv_write_indirect(sc, SV_DMAC_COUNT1, dma_count >> 8);
    966 	sv_write_indirect(sc, SV_DMAC_COUNT0, dma_count & 0xFF);
    967 
    968 	mode = sv_read_indirect(sc, SV_PLAY_RECORD_ENABLE);
    969 	sv_write_indirect(sc, SV_PLAY_RECORD_ENABLE, mode | SV_RECORD_ENABLE);
    970 
    971 	return (0);
    972 }
    973 
    974 int
    975 sv_halt_output(addr)
    976 	void *addr;
    977 {
    978 	struct sv_softc *sc = addr;
    979 	u_int8_t mode;
    980 
    981 	DPRINTF(("sv: sv_halt_output\n"));
    982 	mode = sv_read_indirect(sc, SV_PLAY_RECORD_ENABLE);
    983 	sv_write_indirect(sc, SV_PLAY_RECORD_ENABLE, mode & ~SV_PLAY_ENABLE);
    984 
    985 	return (0);
    986 }
    987 
    988 int
    989 sv_halt_input(addr)
    990 	void *addr;
    991 {
    992 	struct sv_softc *sc = addr;
    993 	u_int8_t mode;
    994 
    995 	DPRINTF(("sv: sv_halt_input\n"));
    996 	mode = sv_read_indirect(sc, SV_PLAY_RECORD_ENABLE);
    997 	sv_write_indirect(sc, SV_PLAY_RECORD_ENABLE, mode & ~SV_RECORD_ENABLE);
    998 
    999 	return (0);
   1000 }
   1001 
   1002 int
   1003 sv_getdev(addr, retp)
   1004 	void *addr;
   1005 	struct audio_device *retp;
   1006 {
   1007 	*retp = sv_device;
   1008 	return (0);
   1009 }
   1010 
   1011 
   1012 /*
   1013  * Mixer related code is here
   1014  *
   1015  */
   1016 
   1017 #define SV_INPUT_CLASS 0
   1018 #define SV_OUTPUT_CLASS 1
   1019 #define SV_RECORD_CLASS 2
   1020 
   1021 #define SV_LAST_CLASS 2
   1022 
   1023 static const char *mixer_classes[] =
   1024 	{ AudioCinputs, AudioCoutputs, AudioCrecord };
   1025 
   1026 static const struct {
   1027 	u_int8_t   l_port;
   1028 	u_int8_t   r_port;
   1029 	u_int8_t   mask;
   1030 	u_int8_t   class;
   1031 	const char *audio;
   1032 } ports[] = {
   1033   { SV_LEFT_AUX1_INPUT_CONTROL, SV_RIGHT_AUX1_INPUT_CONTROL, SV_AUX1_MASK,
   1034     SV_INPUT_CLASS, "aux1" },
   1035   { SV_LEFT_CD_INPUT_CONTROL, SV_RIGHT_CD_INPUT_CONTROL, SV_CD_MASK,
   1036     SV_INPUT_CLASS, AudioNcd },
   1037   { SV_LEFT_LINE_IN_INPUT_CONTROL, SV_RIGHT_LINE_IN_INPUT_CONTROL, SV_LINE_IN_MASK,
   1038     SV_INPUT_CLASS, AudioNline },
   1039   { SV_MIC_INPUT_CONTROL, 0, SV_MIC_MASK, SV_INPUT_CLASS, AudioNmicrophone },
   1040   { SV_LEFT_SYNTH_INPUT_CONTROL, SV_RIGHT_SYNTH_INPUT_CONTROL,
   1041     SV_SYNTH_MASK, SV_INPUT_CLASS, AudioNfmsynth },
   1042   { SV_LEFT_AUX2_INPUT_CONTROL, SV_RIGHT_AUX2_INPUT_CONTROL, SV_AUX2_MASK,
   1043     SV_INPUT_CLASS, "aux2" },
   1044   { SV_LEFT_PCM_INPUT_CONTROL, SV_RIGHT_PCM_INPUT_CONTROL, SV_PCM_MASK,
   1045     SV_INPUT_CLASS, AudioNdac },
   1046   { SV_LEFT_MIXER_OUTPUT_CONTROL, SV_RIGHT_MIXER_OUTPUT_CONTROL,
   1047     SV_MIXER_OUT_MASK, SV_OUTPUT_CLASS, AudioNmaster }
   1048 };
   1049 
   1050 
   1051 static const struct {
   1052 	int idx;
   1053 	const char *name;
   1054 } record_sources[] = {
   1055 	{ SV_REC_CD, AudioNcd },
   1056 	{ SV_REC_DAC, AudioNdac },
   1057 	{ SV_REC_AUX2, "aux2" },
   1058 	{ SV_REC_LINE, AudioNline },
   1059 	{ SV_REC_AUX1, "aux1" },
   1060 	{ SV_REC_MIC, AudioNmicrophone },
   1061 	{ SV_REC_MIXER, AudioNmixerout }
   1062 };
   1063 
   1064 
   1065 #define SV_DEVICES_PER_PORT 2
   1066 #define SV_FIRST_MIXER (SV_LAST_CLASS + 1)
   1067 #define SV_LAST_MIXER (SV_DEVICES_PER_PORT * (ARRAY_SIZE(ports)) + SV_LAST_CLASS)
   1068 #define SV_RECORD_SOURCE (SV_LAST_MIXER + 1)
   1069 #define SV_MIC_BOOST (SV_LAST_MIXER + 2)
   1070 #define SV_RECORD_GAIN (SV_LAST_MIXER + 3)
   1071 #define SV_SRS_MODE (SV_LAST_MIXER + 4)
   1072 
   1073 int
   1074 sv_query_devinfo(addr, dip)
   1075 	void *addr;
   1076 	mixer_devinfo_t *dip;
   1077 {
   1078 	int i;
   1079 
   1080 	/* It's a class */
   1081 	if (dip->index <= SV_LAST_CLASS) {
   1082 		dip->type = AUDIO_MIXER_CLASS;
   1083 		dip->mixer_class = dip->index;
   1084 		dip->next = dip->prev = AUDIO_MIXER_LAST;
   1085 		strcpy(dip->label.name,
   1086 		       mixer_classes[dip->index]);
   1087 		return (0);
   1088 	}
   1089 
   1090 	if (dip->index >= SV_FIRST_MIXER &&
   1091 	    dip->index <= SV_LAST_MIXER) {
   1092 		int off = dip->index - SV_FIRST_MIXER;
   1093 		int mute = (off % SV_DEVICES_PER_PORT);
   1094 		int idx = off / SV_DEVICES_PER_PORT;
   1095 
   1096 		dip->mixer_class = ports[idx].class;
   1097 		strcpy(dip->label.name, ports[idx].audio);
   1098 
   1099 		if (!mute) {
   1100 			dip->type = AUDIO_MIXER_VALUE;
   1101 			dip->prev = AUDIO_MIXER_LAST;
   1102 			dip->next = dip->index + 1;
   1103 
   1104 			if (ports[idx].r_port != 0)
   1105 				dip->un.v.num_channels = 2;
   1106 			else
   1107 				dip->un.v.num_channels = 1;
   1108 
   1109 			strcpy(dip->un.v.units.name, AudioNvolume);
   1110 		} else {
   1111 			dip->type = AUDIO_MIXER_ENUM;
   1112 			dip->prev = dip->index - 1;
   1113 			dip->next = AUDIO_MIXER_LAST;
   1114 
   1115 			strcpy(dip->label.name, AudioNmute);
   1116 			dip->un.e.num_mem = 2;
   1117 			strcpy(dip->un.e.member[0].label.name, AudioNoff);
   1118 			dip->un.e.member[0].ord = 0;
   1119 			strcpy(dip->un.e.member[1].label.name, AudioNon);
   1120 			dip->un.e.member[1].ord = 1;
   1121 		}
   1122 
   1123 		return (0);
   1124 	}
   1125 
   1126 	switch (dip->index) {
   1127 	case SV_RECORD_SOURCE:
   1128 		dip->mixer_class = SV_RECORD_CLASS;
   1129 		dip->prev = AUDIO_MIXER_LAST;
   1130 		dip->next = SV_RECORD_GAIN;
   1131 		strcpy(dip->label.name, AudioNsource);
   1132 		dip->type = AUDIO_MIXER_ENUM;
   1133 
   1134 		dip->un.e.num_mem = ARRAY_SIZE(record_sources);
   1135 		for (i = 0; i < ARRAY_SIZE(record_sources); i++) {
   1136 			strcpy(dip->un.e.member[i].label.name,
   1137 			       record_sources[i].name);
   1138 			dip->un.e.member[i].ord = record_sources[i].idx;
   1139 		}
   1140 		return (0);
   1141 
   1142 	case SV_RECORD_GAIN:
   1143 		dip->mixer_class = SV_RECORD_CLASS;
   1144 		dip->prev = SV_RECORD_SOURCE;
   1145 		dip->next = AUDIO_MIXER_LAST;
   1146 		strcpy(dip->label.name, "gain");
   1147 		dip->type = AUDIO_MIXER_VALUE;
   1148 		dip->un.v.num_channels = 1;
   1149 		strcpy(dip->un.v.units.name, AudioNvolume);
   1150 		return (0);
   1151 
   1152 	case SV_MIC_BOOST:
   1153 		dip->mixer_class = SV_RECORD_CLASS;
   1154 		dip->prev = AUDIO_MIXER_LAST;
   1155 		dip->next = AUDIO_MIXER_LAST;
   1156 		strcpy(dip->label.name, "micboost");
   1157 		goto on_off;
   1158 
   1159 	case SV_SRS_MODE:
   1160 		dip->mixer_class = SV_OUTPUT_CLASS;
   1161 		dip->prev = dip->next = AUDIO_MIXER_LAST;
   1162 		strcpy(dip->label.name, AudioNspatial);
   1163 
   1164 	on_off:
   1165 		dip->type = AUDIO_MIXER_ENUM;
   1166 		dip->un.e.num_mem = 2;
   1167 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
   1168 		dip->un.e.member[0].ord = 0;
   1169 		strcpy(dip->un.e.member[1].label.name, AudioNon);
   1170 		dip->un.e.member[1].ord = 1;
   1171 		return (0);
   1172 	}
   1173 
   1174 	return (ENXIO);
   1175 }
   1176 
   1177 int
   1178 sv_mixer_set_port(addr, cp)
   1179 	void *addr;
   1180 	mixer_ctrl_t *cp;
   1181 {
   1182 	struct sv_softc *sc = addr;
   1183 	u_int8_t reg;
   1184 	int idx;
   1185 
   1186 	if (cp->dev >= SV_FIRST_MIXER &&
   1187 	    cp->dev <= SV_LAST_MIXER) {
   1188 		int off = cp->dev - SV_FIRST_MIXER;
   1189 		int mute = (off % SV_DEVICES_PER_PORT);
   1190 		idx = off / SV_DEVICES_PER_PORT;
   1191 
   1192 		if (mute) {
   1193 			if (cp->type != AUDIO_MIXER_ENUM)
   1194 				return (EINVAL);
   1195 
   1196 			reg = sv_read_indirect(sc, ports[idx].l_port);
   1197 			if (cp->un.ord)
   1198 				reg |= SV_MUTE_BIT;
   1199 			else
   1200 				reg &= ~SV_MUTE_BIT;
   1201 			sv_write_indirect(sc, ports[idx].l_port, reg);
   1202 
   1203 			if (ports[idx].r_port) {
   1204 				reg = sv_read_indirect(sc, ports[idx].r_port);
   1205 				if (cp->un.ord)
   1206 					reg |= SV_MUTE_BIT;
   1207 				else
   1208 					reg &= ~SV_MUTE_BIT;
   1209 				sv_write_indirect(sc, ports[idx].r_port, reg);
   1210 			}
   1211 		} else {
   1212 			int  lval, rval;
   1213 
   1214 			if (cp->type != AUDIO_MIXER_VALUE)
   1215 				return (EINVAL);
   1216 
   1217 			if (cp->un.value.num_channels != 1 &&
   1218 			    cp->un.value.num_channels != 2)
   1219 				return (EINVAL);
   1220 
   1221 			if (ports[idx].r_port == 0) {
   1222 				if (cp->un.value.num_channels != 1)
   1223 					return (EINVAL);
   1224 				lval = cp->un.value.level[AUDIO_MIXER_LEVEL_MONO];
   1225 				rval = 0; /* shut up GCC */
   1226 			} else {
   1227 				if (cp->un.value.num_channels != 2)
   1228 					return (EINVAL);
   1229 
   1230 				lval = cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT];
   1231 				rval = cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT];
   1232       }
   1233 
   1234 
   1235 			reg = sv_read_indirect(sc, ports[idx].l_port);
   1236 			reg &= ~(ports[idx].mask);
   1237 			lval = (AUDIO_MAX_GAIN - lval) * ports[idx].mask /
   1238 				AUDIO_MAX_GAIN;
   1239 			reg |= lval;
   1240 			sv_write_indirect(sc, ports[idx].l_port, reg);
   1241 
   1242 			if (ports[idx].r_port != 0) {
   1243 				reg = sv_read_indirect(sc, ports[idx].r_port);
   1244 				reg &= ~(ports[idx].mask);
   1245 
   1246 				rval = (AUDIO_MAX_GAIN - rval) * ports[idx].mask /
   1247 					AUDIO_MAX_GAIN;
   1248 				reg |= rval;
   1249 
   1250 				sv_write_indirect(sc, ports[idx].r_port, reg);
   1251 			}
   1252 
   1253 			sv_read_indirect(sc, ports[idx].l_port);
   1254 		}
   1255 
   1256 		return (0);
   1257 	}
   1258 
   1259 
   1260 	switch (cp->dev) {
   1261 	case SV_RECORD_SOURCE:
   1262 		if (cp->type != AUDIO_MIXER_ENUM)
   1263 			return (EINVAL);
   1264 
   1265 		for (idx = 0; idx < ARRAY_SIZE(record_sources); idx++) {
   1266 			if (record_sources[idx].idx == cp->un.ord)
   1267 				goto found;
   1268 		}
   1269 
   1270 		return (EINVAL);
   1271 
   1272 	found:
   1273 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL);
   1274 		reg &= ~SV_REC_SOURCE_MASK;
   1275 		reg |= (((cp->un.ord) << SV_REC_SOURCE_SHIFT) & SV_REC_SOURCE_MASK);
   1276 		sv_write_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL, reg);
   1277 
   1278 		reg = sv_read_indirect(sc, SV_RIGHT_ADC_INPUT_CONTROL);
   1279 		reg &= ~SV_REC_SOURCE_MASK;
   1280 		reg |= (((cp->un.ord) << SV_REC_SOURCE_SHIFT) & SV_REC_SOURCE_MASK);
   1281 		sv_write_indirect(sc, SV_RIGHT_ADC_INPUT_CONTROL, reg);
   1282 		return (0);
   1283 
   1284 	case SV_RECORD_GAIN:
   1285 	{
   1286 		int val;
   1287 
   1288 		if (cp->type != AUDIO_MIXER_VALUE)
   1289 			return (EINVAL);
   1290 
   1291 		if (cp->un.value.num_channels != 1)
   1292 			return (EINVAL);
   1293 
   1294 		val = (cp->un.value.level[AUDIO_MIXER_LEVEL_MONO] * SV_REC_GAIN_MASK)
   1295 			/ AUDIO_MAX_GAIN;
   1296 
   1297 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL);
   1298 		reg &= ~SV_REC_GAIN_MASK;
   1299 		reg |= val;
   1300 		sv_write_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL, reg);
   1301 
   1302 		reg = sv_read_indirect(sc, SV_RIGHT_ADC_INPUT_CONTROL);
   1303 		reg &= ~SV_REC_GAIN_MASK;
   1304 		reg |= val;
   1305 		sv_write_indirect(sc, SV_RIGHT_ADC_INPUT_CONTROL, reg);
   1306 	}
   1307 	return (0);
   1308 
   1309 	case SV_MIC_BOOST:
   1310 		if (cp->type != AUDIO_MIXER_ENUM)
   1311 			return (EINVAL);
   1312 
   1313 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL);
   1314 		if (cp->un.ord) {
   1315 			reg |= SV_MIC_BOOST_BIT;
   1316 		} else {
   1317 			reg &= ~SV_MIC_BOOST_BIT;
   1318 		}
   1319 
   1320 		sv_write_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL, reg);
   1321 		return (0);
   1322 
   1323 	case SV_SRS_MODE:
   1324 		if (cp->type != AUDIO_MIXER_ENUM)
   1325 			return (EINVAL);
   1326 
   1327 		reg = sv_read_indirect(sc, SV_SRS_SPACE_CONTROL);
   1328 		if (cp->un.ord) {
   1329 			reg &= ~SV_SRS_SPACE_ONOFF;
   1330 		} else {
   1331 			reg |= SV_SRS_SPACE_ONOFF;
   1332 		}
   1333 
   1334 		sv_write_indirect(sc, SV_SRS_SPACE_CONTROL, reg);
   1335 		return (0);
   1336 	}
   1337 
   1338 	return (EINVAL);
   1339 }
   1340 
   1341 int
   1342 sv_mixer_get_port(addr, cp)
   1343 	void *addr;
   1344 	mixer_ctrl_t *cp;
   1345 {
   1346 	struct sv_softc *sc = addr;
   1347 	int val;
   1348 	u_int8_t reg;
   1349 
   1350 	if (cp->dev >= SV_FIRST_MIXER &&
   1351 	    cp->dev <= SV_LAST_MIXER) {
   1352 		int off = cp->dev - SV_FIRST_MIXER;
   1353 		int mute = (off % 2);
   1354 		int idx = off / 2;
   1355 
   1356 		if (mute) {
   1357 			if (cp->type != AUDIO_MIXER_ENUM)
   1358 				return (EINVAL);
   1359 
   1360 			reg = sv_read_indirect(sc, ports[idx].l_port);
   1361 			cp->un.ord = ((reg & SV_MUTE_BIT) ? 1 : 0);
   1362 		} else {
   1363 			if (cp->type != AUDIO_MIXER_VALUE)
   1364 				return (EINVAL);
   1365 
   1366 			if (cp->un.value.num_channels != 1 &&
   1367 			    cp->un.value.num_channels != 2)
   1368 				return (EINVAL);
   1369 
   1370 			if ((ports[idx].r_port == 0 &&
   1371 			     cp->un.value.num_channels != 1) ||
   1372 			    (ports[idx].r_port != 0 &&
   1373 			     cp->un.value.num_channels != 2))
   1374 				return (EINVAL);
   1375 
   1376 			reg = sv_read_indirect(sc, ports[idx].l_port);
   1377 			reg &= ports[idx].mask;
   1378 
   1379 			val = AUDIO_MAX_GAIN - ((reg * AUDIO_MAX_GAIN) / ports[idx].mask);
   1380 
   1381 			if (ports[idx].r_port != 0) {
   1382 				cp->un.value.level[AUDIO_MIXER_LEVEL_LEFT] = val;
   1383 
   1384 				reg = sv_read_indirect(sc, ports[idx].r_port);
   1385 				reg &= ports[idx].mask;
   1386 
   1387 				val = AUDIO_MAX_GAIN - ((reg * AUDIO_MAX_GAIN) / ports[idx].mask);
   1388 				cp->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = val;
   1389 			} else
   1390 				cp->un.value.level[AUDIO_MIXER_LEVEL_MONO] = val;
   1391 		}
   1392 
   1393 		return (0);
   1394   }
   1395 
   1396 	switch (cp->dev) {
   1397 	case SV_RECORD_SOURCE:
   1398 		if (cp->type != AUDIO_MIXER_ENUM)
   1399 			return (EINVAL);
   1400 
   1401 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL);
   1402 		cp->un.ord = ((reg & SV_REC_SOURCE_MASK) >> SV_REC_SOURCE_SHIFT);
   1403 
   1404 		return (0);
   1405 
   1406 	case SV_RECORD_GAIN:
   1407 		if (cp->type != AUDIO_MIXER_VALUE)
   1408 			return (EINVAL);
   1409 		if (cp->un.value.num_channels != 1)
   1410 			return (EINVAL);
   1411 
   1412 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL) & SV_REC_GAIN_MASK;
   1413 		cp->un.value.level[AUDIO_MIXER_LEVEL_MONO] =
   1414 			(((unsigned int)reg) * AUDIO_MAX_GAIN) / SV_REC_GAIN_MASK;
   1415 
   1416 		return (0);
   1417 
   1418 	case SV_MIC_BOOST:
   1419 		if (cp->type != AUDIO_MIXER_ENUM)
   1420 			return (EINVAL);
   1421 		reg = sv_read_indirect(sc, SV_LEFT_ADC_INPUT_CONTROL);
   1422 		cp->un.ord = ((reg & SV_MIC_BOOST_BIT) ? 1 : 0);
   1423 		return (0);
   1424 
   1425 
   1426 	case SV_SRS_MODE:
   1427 		if (cp->type != AUDIO_MIXER_ENUM)
   1428 			return (EINVAL);
   1429 		reg = sv_read_indirect(sc, SV_SRS_SPACE_CONTROL);
   1430 		cp->un.ord = ((reg & SV_SRS_SPACE_ONOFF) ? 0 : 1);
   1431 		return (0);
   1432 	}
   1433 
   1434 	return (EINVAL);
   1435 }
   1436 
   1437 
   1438 static void
   1439 sv_init_mixer(sc)
   1440 	struct sv_softc *sc;
   1441 {
   1442 	mixer_ctrl_t cp;
   1443 	int i;
   1444 
   1445 	cp.type = AUDIO_MIXER_ENUM;
   1446 	cp.dev = SV_SRS_MODE;
   1447 	cp.un.ord = 0;
   1448 
   1449 	sv_mixer_set_port(sc, &cp);
   1450 
   1451 	for (i = 0; i < ARRAY_SIZE(ports); i++) {
   1452 		if (ports[i].audio == AudioNdac) {
   1453 			cp.type = AUDIO_MIXER_ENUM;
   1454 			cp.dev = SV_FIRST_MIXER + i * SV_DEVICES_PER_PORT + 1;
   1455 			cp.un.ord = 0;
   1456 			sv_mixer_set_port(sc, &cp);
   1457 			break;
   1458 		}
   1459 	}
   1460 }
   1461 
   1462 void *
   1463 sv_malloc(addr, direction, size, pool, flags)
   1464 	void *addr;
   1465 	int direction;
   1466 	size_t size;
   1467 	struct malloc_type *pool;
   1468 	int flags;
   1469 {
   1470 	struct sv_softc *sc = addr;
   1471 	struct sv_dma *p;
   1472 	int error;
   1473 
   1474 	p = malloc(sizeof(*p), pool, flags);
   1475 	if (!p)
   1476 		return (0);
   1477 	error = sv_allocmem(sc, size, 16, direction, p);
   1478 	if (error) {
   1479 		free(p, pool);
   1480 		return (0);
   1481 	}
   1482 	p->next = sc->sc_dmas;
   1483 	sc->sc_dmas = p;
   1484 	return (KERNADDR(p));
   1485 }
   1486 
   1487 void
   1488 sv_free(addr, ptr, pool)
   1489 	void *addr;
   1490 	void *ptr;
   1491 	struct malloc_type *pool;
   1492 {
   1493 	struct sv_softc *sc = addr;
   1494 	struct sv_dma **pp, *p;
   1495 
   1496 	for (pp = &sc->sc_dmas; (p = *pp) != NULL; pp = &p->next) {
   1497 		if (KERNADDR(p) == ptr) {
   1498 			sv_freemem(sc, p);
   1499 			*pp = p->next;
   1500 			free(p, pool);
   1501 			return;
   1502 		}
   1503 	}
   1504 }
   1505 
   1506 size_t
   1507 sv_round_buffersize(addr, direction, size)
   1508 	void *addr;
   1509 	int direction;
   1510 	size_t size;
   1511 {
   1512 	return (size);
   1513 }
   1514 
   1515 paddr_t
   1516 sv_mappage(addr, mem, off, prot)
   1517 	void *addr;
   1518 	void *mem;
   1519 	off_t off;
   1520 	int prot;
   1521 {
   1522 	struct sv_softc *sc = addr;
   1523 	struct sv_dma *p;
   1524 
   1525 	if (off < 0)
   1526 		return (-1);
   1527 	for (p = sc->sc_dmas; p && KERNADDR(p) != mem; p = p->next)
   1528 		;
   1529 	if (!p)
   1530 		return (-1);
   1531 	return (bus_dmamem_mmap(sc->sc_dmatag, p->segs, p->nsegs,
   1532 				off, prot, BUS_DMA_WAITOK));
   1533 }
   1534 
   1535 int
   1536 sv_get_props(addr)
   1537 	void *addr;
   1538 {
   1539 	return (AUDIO_PROP_MMAP | AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX);
   1540 }
   1541