File: [local] / sys / dev / pci / neo.c (download)
Revision 1.1, Tue Mar 4 16:13:39 2008 UTC (16 years, 1 month ago) by nbrk
Branch point for: MAIN
Initial revision
|
/* $OpenBSD: neo.c,v 1.19 2005/08/09 04:10:13 mickey Exp $ */
/*
* Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk>
* All rights reserved.
*
* Derived from the public domain Linux driver
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: src/sys/dev/sound/pci/neomagic.c,v 1.8 2000/03/20 15:30:50 cg Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <dev/pci/pcidevs.h>
#include <dev/pci/pcivar.h>
#include <sys/audioio.h>
#include <dev/audio_if.h>
#include <dev/mulaw.h>
#include <dev/auconv.h>
#include <dev/ic/ac97.h>
#include <dev/pci/neoreg.h>
/* -------------------------------------------------------------------- */
/*
* As of 04/13/00, public documentation on the Neomagic 256 is not available.
* These comments were gleaned by looking at the driver carefully.
*
* The Neomagic 256 AV/ZX chips provide both video and audio capabilities
* on one chip. About 2-6 megabytes of memory are associated with
* the chip. Most of this goes to video frame buffers, but some is used for
* audio buffering.
*
* Unlike most PCI audio chips, the Neomagic chip does not rely on DMA.
* Instead, the chip allows you to carve two ring buffers out of its
* memory. How you carve this and how much you can carve seems to be
* voodoo. The algorithm is in nm_init.
*
* Most Neomagic audio chips use the AC-97 codec interface. However, there
* seem to be a select few chips 256AV chips that do not support AC-97.
* This driver does not support them but there are rumors that it
* might work with wss isa drivers. This might require some playing around
* with your BIOS.
*
* The Neomagic 256 AV/ZX have 2 PCI I/O region descriptors. Both of
* them describe a memory region. The frame buffer is the first region
* and the register set is the second region.
*
* The register manipulation logic is taken from the Linux driver,
* which is in the public domain.
*
* The Neomagic is even nice enough to map the AC-97 codec registers into
* the register space to allow direct manipulation. Watch out, accessing
* AC-97 registers on the Neomagic requires great delicateness, otherwise
* the thing will hang the PCI bus, rendering your system frozen.
*
* For one, it seems the Neomagic status register that reports AC-97
* readiness should NOT be polled more often than once each 1ms.
*
* Also, writes to the AC-97 register space may take over 40us to
* complete.
*
* Unlike many sound engines, the Neomagic does not support (as fas as
* we know :) ) the notion of interrupting every n bytes transferred,
* unlike many DMA engines. Instead, it allows you to specify one
* location in each ring buffer (called the watermark). When the chip
* passes that location while playing, it signals an interrupt.
*
* The ring buffer size is currently 16k. That is about 100ms of audio
* at 44.1khz/stero/16 bit. However, to keep the buffer full, interrupts
* are generated more often than that, so 20-40 interrupts per second
* should not be unexpected. Increasing BUFFSIZE should help minimize
* the glitches due to drivers that spend too much time looping at high
* privelege levels as well as the impact of badly written audio
* interface clients.
*
* TO-DO list:
* neo_malloc/neo_free are still seriously broken.
*
* Figure out interaction with video stuff (look at Xfree86 driver?)
*
* Power management (neoactivate)
*
* Fix detection of Neo devices that don't work this driver (see neo_attach)
*
* Figure out how to shrink that huge table neo-coeff.h
*/
#define NM_BUFFSIZE 16384
#define NM256AV_PCI_ID 0x800510c8
#define NM256ZX_PCI_ID 0x800610c8
/* device private data */
struct neo_softc {
struct device dev;
bus_space_tag_t bufiot;
bus_space_handle_t bufioh;
bus_space_tag_t regiot;
bus_space_handle_t regioh;
u_int32_t type;
void *ih;
void (*pintr)(void *); /* dma completion intr handler */
void *parg; /* arg for intr() */
void (*rintr)(void *); /* dma completion intr handler */
void *rarg; /* arg for intr() */
u_int32_t ac97_base, ac97_status, ac97_busy;
u_int32_t buftop, pbuf, rbuf, cbuf, acbuf;
u_int32_t playint, recint, misc1int, misc2int;
u_int32_t irsz, badintr;
u_int32_t pbufsize;
u_int32_t rbufsize;
u_int32_t pblksize;
u_int32_t rblksize;
u_int32_t pwmark;
u_int32_t rwmark;
struct ac97_codec_if *codec_if;
struct ac97_host_if host_if;
void *powerhook;
};
static struct neo_firmware *nf;
/* -------------------------------------------------------------------- */
/*
* prototypes
*/
static int nm_waitcd(struct neo_softc *sc);
static int nm_loadcoeff(struct neo_softc *sc, int dir, int num);
static int nm_init(struct neo_softc *);
int nmchan_getptr(struct neo_softc *, int);
/* talk to the card */
static u_int32_t nm_rd(struct neo_softc *, int, int);
static void nm_wr(struct neo_softc *, int, u_int32_t, int);
static u_int32_t nm_rdbuf(struct neo_softc *, int, int);
static void nm_wrbuf(struct neo_softc *, int, u_int32_t, int);
int neo_match(struct device *, void *, void *);
void neo_attach(struct device *, struct device *, void *);
int neo_intr(void *);
int neo_open(void *, int);
void neo_close(void *);
int neo_query_encoding(void *, struct audio_encoding *);
int neo_set_params(void *, int, int, struct audio_params *, struct audio_params *);
int neo_round_blocksize(void *, int);
int neo_trigger_output(void *, void *, void *, int, void (*)(void *),
void *, struct audio_params *);
int neo_trigger_input(void *, void *, void *, int, void (*)(void *),
void *, struct audio_params *);
int neo_halt_output(void *);
int neo_halt_input(void *);
int neo_getdev(void *, struct audio_device *);
int neo_mixer_set_port(void *, mixer_ctrl_t *);
int neo_mixer_get_port(void *, mixer_ctrl_t *);
int neo_attach_codec(void *sc, struct ac97_codec_if *);
int neo_read_codec(void *sc, u_int8_t a, u_int16_t *d);
int neo_write_codec(void *sc, u_int8_t a, u_int16_t d);
void neo_reset_codec(void *sc);
enum ac97_host_flags neo_flags_codec(void *sc);
int neo_query_devinfo(void *, mixer_devinfo_t *);
void *neo_malloc(void *, int, size_t, int, int);
void neo_free(void *, void *, int);
size_t neo_round_buffersize(void *, int, size_t);
int neo_get_props(void *);
void neo_set_mixer(struct neo_softc *sc, int a, int d);
void neo_power(int why, void *arg);
struct cfdriver neo_cd = {
NULL, "neo", DV_DULL
};
struct cfattach neo_ca = {
sizeof(struct neo_softc), neo_match, neo_attach
};
struct audio_device neo_device = {
"NeoMagic 256",
"",
"neo"
};
#if 0
static u_int32_t badcards[] = {
0x0007103c,
0x008f1028,
};
#endif
#define NUM_BADCARDS (sizeof(badcards) / sizeof(u_int32_t))
/* The actual rates supported by the card. */
static int samplerates[9] = {
8000,
11025,
16000,
22050,
24000,
32000,
44100,
48000,
99999999
};
/* -------------------------------------------------------------------- */
struct audio_hw_if neo_hw_if = {
neo_open,
neo_close,
NULL,
neo_query_encoding,
neo_set_params,
#if 1
neo_round_blocksize,
#else
NULL,
#endif
NULL,
NULL,
NULL,
NULL,
NULL,
neo_halt_output,
neo_halt_input,
NULL,
neo_getdev,
NULL,
neo_mixer_set_port,
neo_mixer_get_port,
neo_query_devinfo,
neo_malloc,
neo_free,
neo_round_buffersize,
0, /* neo_mappage, */
neo_get_props,
neo_trigger_output,
neo_trigger_input,
};
/* -------------------------------------------------------------------- */
/* Hardware */
static u_int32_t
nm_rd(struct neo_softc *sc, int regno, int size)
{
bus_space_tag_t st = sc->regiot;
bus_space_handle_t sh = sc->regioh;
switch (size) {
case 1:
return bus_space_read_1(st, sh, regno);
case 2:
return bus_space_read_2(st, sh, regno);
case 4:
return bus_space_read_4(st, sh, regno);
default:
return (0xffffffff);
}
}
static void
nm_wr(struct neo_softc *sc, int regno, u_int32_t data, int size)
{
bus_space_tag_t st = sc->regiot;
bus_space_handle_t sh = sc->regioh;
switch (size) {
case 1:
bus_space_write_1(st, sh, regno, data);
break;
case 2:
bus_space_write_2(st, sh, regno, data);
break;
case 4:
bus_space_write_4(st, sh, regno, data);
break;
}
}
static u_int32_t
nm_rdbuf(struct neo_softc *sc, int regno, int size)
{
bus_space_tag_t st = sc->bufiot;
bus_space_handle_t sh = sc->bufioh;
switch (size) {
case 1:
return bus_space_read_1(st, sh, regno);
case 2:
return bus_space_read_2(st, sh, regno);
case 4:
return bus_space_read_4(st, sh, regno);
default:
return (0xffffffff);
}
}
static void
nm_wrbuf(struct neo_softc *sc, int regno, u_int32_t data, int size)
{
bus_space_tag_t st = sc->bufiot;
bus_space_handle_t sh = sc->bufioh;
switch (size) {
case 1:
bus_space_write_1(st, sh, regno, data);
break;
case 2:
bus_space_write_2(st, sh, regno, data);
break;
case 4:
bus_space_write_4(st, sh, regno, data);
break;
}
}
/* ac97 codec */
static int
nm_waitcd(struct neo_softc *sc)
{
int cnt = 10;
int fail = 1;
while (cnt-- > 0) {
if (nm_rd(sc, sc->ac97_status, 2) & sc->ac97_busy)
DELAY(100);
else {
fail = 0;
break;
}
}
return (fail);
}
static void
nm_ackint(struct neo_softc *sc, u_int32_t num)
{
if (sc->type == NM256AV_PCI_ID)
nm_wr(sc, NM_INT_REG, num << 1, 2);
else if (sc->type == NM256ZX_PCI_ID)
nm_wr(sc, NM_INT_REG, num, 4);
}
static int
nm_loadcoeff(struct neo_softc *sc, int dir, int num)
{
int ofs, sz, i;
u_int32_t addr;
if (nf == NULL) {
size_t buflen;
u_char *buf;
int error;
error = loadfirmware("neo-coefficients", &buf, &buflen);
if (error)
return (error);
nf = (struct neo_firmware *)buf;
}
addr = (dir == AUMODE_PLAY)? 0x01c : 0x21c;
if (dir == AUMODE_RECORD)
num += 8;
sz = nf->coefficientSizes[num];
ofs = 0;
while (num-- > 0)
ofs+= nf->coefficientSizes[num];
for (i = 0; i < sz; i++)
nm_wrbuf(sc, sc->cbuf + i, nf->coefficients[ofs + i], 1);
nm_wr(sc, addr, sc->cbuf, 4);
if (dir == AUMODE_PLAY)
sz--;
nm_wr(sc, addr + 4, sc->cbuf + sz, 4);
return (0);
}
int
nmchan_getptr(sc, mode)
struct neo_softc *sc;
int mode;
{
if (mode == AUMODE_PLAY)
return (nm_rd(sc, NM_PBUFFER_CURRP, 4) - sc->pbuf);
else
return (nm_rd(sc, NM_RBUFFER_CURRP, 4) - sc->rbuf);
}
/* The interrupt handler */
int
neo_intr(void *p)
{
struct neo_softc *sc = (struct neo_softc *)p;
int status, x;
int rv = 0;
status = nm_rd(sc, NM_INT_REG, sc->irsz);
if (status & sc->playint) {
status &= ~sc->playint;
sc->pwmark += sc->pblksize;
sc->pwmark %= sc->pbufsize;
nm_wr(sc, NM_PBUFFER_WMARK, sc->pbuf + sc->pwmark, 4);
nm_ackint(sc, sc->playint);
if (sc->pintr)
(*sc->pintr)(sc->parg);
rv = 1;
}
if (status & sc->recint) {
status &= ~sc->recint;
sc->rwmark += sc->rblksize;
sc->rwmark %= sc->rbufsize;
nm_ackint(sc, sc->recint);
if (sc->rintr)
(*sc->rintr)(sc->rarg);
rv = 1;
}
if (status & sc->misc1int) {
status &= ~sc->misc1int;
nm_ackint(sc, sc->misc1int);
x = nm_rd(sc, 0x400, 1);
nm_wr(sc, 0x400, x | 2, 1);
printf("%s: misc int 1\n", sc->dev.dv_xname);
rv = 1;
}
if (status & sc->misc2int) {
status &= ~sc->misc2int;
nm_ackint(sc, sc->misc2int);
x = nm_rd(sc, 0x400, 1);
nm_wr(sc, 0x400, x & ~2, 1);
printf("%s: misc int 2\n", sc->dev.dv_xname);
rv = 1;
}
if (status) {
status &= ~sc->misc2int;
nm_ackint(sc, sc->misc2int);
printf("%s: unknown int\n", sc->dev.dv_xname);
rv = 1;
}
return (rv);
}
/* -------------------------------------------------------------------- */
/*
* Probe and attach the card
*/
static int
nm_init(struct neo_softc *sc)
{
u_int32_t ofs, i;
if (sc->type == NM256AV_PCI_ID) {
sc->ac97_base = NM_MIXER_OFFSET;
sc->ac97_status = NM_MIXER_STATUS_OFFSET;
sc->ac97_busy = NM_MIXER_READY_MASK;
sc->buftop = 2560 * 1024;
sc->irsz = 2;
sc->playint = NM_PLAYBACK_INT;
sc->recint = NM_RECORD_INT;
sc->misc1int = NM_MISC_INT_1;
sc->misc2int = NM_MISC_INT_2;
} else if (sc->type == NM256ZX_PCI_ID) {
sc->ac97_base = NM_MIXER_OFFSET;
sc->ac97_status = NM2_MIXER_STATUS_OFFSET;
sc->ac97_busy = NM2_MIXER_READY_MASK;
sc->buftop = (nm_rd(sc, 0xa0b, 2)? 6144 : 4096) * 1024;
sc->irsz = 4;
sc->playint = NM2_PLAYBACK_INT;
sc->recint = NM2_RECORD_INT;
sc->misc1int = NM2_MISC_INT_1;
sc->misc2int = NM2_MISC_INT_2;
} else return -1;
sc->badintr = 0;
ofs = sc->buftop - 0x0400;
sc->buftop -= 0x1400;
if ((nm_rdbuf(sc, ofs, 4) & NM_SIG_MASK) == NM_SIGNATURE) {
i = nm_rdbuf(sc, ofs + 4, 4);
if (i != 0 && i != 0xffffffff)
sc->buftop = i;
}
sc->cbuf = sc->buftop - NM_MAX_COEFFICIENT;
sc->rbuf = sc->cbuf - NM_BUFFSIZE;
sc->pbuf = sc->rbuf - NM_BUFFSIZE;
sc->acbuf = sc->pbuf - (NM_TOTAL_COEFF_COUNT * 4);
nm_wr(sc, 0, 0x11, 1);
nm_wr(sc, NM_RECORD_ENABLE_REG, 0, 1);
nm_wr(sc, 0x214, 0, 2);
return 0;
}
void
neo_attach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
struct neo_softc *sc = (struct neo_softc *)self;
struct pci_attach_args *pa = (struct pci_attach_args *)aux;
pci_chipset_tag_t pc = pa->pa_pc;
char const *intrstr;
pci_intr_handle_t ih;
int error;
sc->type = pa->pa_id;
/* Map I/O register */
if (pci_mapreg_map(pa, PCI_MAPS, PCI_MAPREG_TYPE_MEM, 0,
&sc->bufiot, &sc->bufioh, NULL, NULL, 0)) {
printf("\n%s: can't map i/o space\n", sc->dev.dv_xname);
return;
}
if (pci_mapreg_map(pa, PCI_MAPS + 4, PCI_MAPREG_TYPE_MEM, 0,
&sc->regiot, &sc->regioh, NULL, NULL, 0)) {
printf("\n%s: can't map i/o space\n", sc->dev.dv_xname);
return;
}
/* Map and establish the interrupt. */
if (pci_intr_map(pa, &ih)) {
printf("\n%s: couldn't map interrupt\n", sc->dev.dv_xname);
return;
}
intrstr = pci_intr_string(pc, ih);
sc->ih = pci_intr_establish(pc, ih, IPL_AUDIO, neo_intr, sc,
sc->dev.dv_xname);
if (sc->ih == NULL) {
printf("\n%s: couldn't establish interrupt",
sc->dev.dv_xname);
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
return;
}
printf(": %s\n", intrstr);
if ((error = nm_init(sc)) != 0)
return;
sc->host_if.arg = sc;
sc->host_if.attach = neo_attach_codec;
sc->host_if.read = neo_read_codec;
sc->host_if.write = neo_write_codec;
sc->host_if.reset = neo_reset_codec;
sc->host_if.flags = neo_flags_codec;
if ((error = ac97_attach(&sc->host_if)) != 0)
return;
sc->powerhook = powerhook_establish(neo_power, sc);
audio_attach_mi(&neo_hw_if, sc, &sc->dev);
return;
}
void
neo_power(int why, void *addr)
{
struct neo_softc *sc = (struct neo_softc *)addr;
if (why == PWR_RESUME) {
nm_init(sc);
(sc->codec_if->vtbl->restore_ports)(sc->codec_if);
}
}
int
neo_match(parent, match, aux)
struct device *parent;
void *match;
void *aux;
{
struct pci_attach_args *pa = (struct pci_attach_args *) aux;
#if 0
u_int32_t subdev, badcard;
#endif
if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NEOMAGIC)
return (0);
#if 0
subdev = (pci_get_subdevice(dev) << 16) | pci_get_subvendor(dev);
#endif
switch (PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_NEOMAGIC_NM256AV:
#if 0
i = 0;
while ((i < NUM_BADCARDS) && (badcards[i] != subdev))
i++;
if (i == NUM_BADCARDS)
s = "NeoMagic 256AV";
DEB(else)
DEB(device_printf(dev, "this is a non-ac97 NM256AV, not attaching\n"));
return (1);
#endif
case PCI_PRODUCT_NEOMAGIC_NM256ZX:
return (1);
}
return (0);
}
int
neo_read_codec(sc_, a, d)
void *sc_;
u_int8_t a;
u_int16_t *d;
{
struct neo_softc *sc = sc_;
if (!nm_waitcd(sc)) {
*d = nm_rd(sc, sc->ac97_base + a, 2);
DELAY(1000);
return 0;
}
return (ENXIO);
}
int
neo_write_codec(sc_, a, d)
void *sc_;
u_int8_t a;
u_int16_t d;
{
struct neo_softc *sc = sc_;
int cnt = 3;
if (!nm_waitcd(sc)) {
while (cnt-- > 0) {
nm_wr(sc, sc->ac97_base + a, d, 2);
if (!nm_waitcd(sc)) {
DELAY(1000);
return (0);
}
}
}
return (ENXIO);
}
int
neo_attach_codec(sc_, codec_if)
void *sc_;
struct ac97_codec_if *codec_if;
{
struct neo_softc *sc = sc_;
sc->codec_if = codec_if;
return (0);
}
void
neo_reset_codec(sc)
void *sc;
{
nm_wr(sc, 0x6c0, 0x01, 1);
nm_wr(sc, 0x6cc, 0x87, 1);
nm_wr(sc, 0x6cc, 0x80, 1);
nm_wr(sc, 0x6cc, 0x00, 1);
return;
}
enum ac97_host_flags
neo_flags_codec(sc)
void *sc;
{
return (AC97_HOST_DONT_READANY);
}
int
neo_open(addr, flags)
void *addr;
int flags;
{
return (0);
}
/*
* Close function is called at splaudio().
*/
void
neo_close(addr)
void *addr;
{
struct neo_softc *sc = addr;
neo_halt_output(sc);
neo_halt_input(sc);
sc->pintr = 0;
sc->rintr = 0;
}
int
neo_query_encoding(addr, fp)
void *addr;
struct audio_encoding *fp;
{
switch (fp->index) {
case 0:
strlcpy(fp->name, AudioEulinear, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_ULINEAR;
fp->precision = 8;
fp->flags = 0;
return (0);
case 1:
strlcpy(fp->name, AudioEmulaw, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_ULAW;
fp->precision = 8;
fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
return (0);
case 2:
strlcpy(fp->name, AudioEalaw, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_ALAW;
fp->precision = 8;
fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
return (0);
case 3:
strlcpy(fp->name, AudioEslinear, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_SLINEAR;
fp->precision = 8;
fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
return (0);
case 4:
strlcpy(fp->name, AudioEslinear_le, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_SLINEAR_LE;
fp->precision = 16;
fp->flags = 0;
return (0);
case 5:
strlcpy(fp->name, AudioEulinear_le, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_ULINEAR_LE;
fp->precision = 16;
fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
return (0);
case 6:
strlcpy(fp->name, AudioEslinear_be, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_SLINEAR_BE;
fp->precision = 16;
fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
return (0);
case 7:
strlcpy(fp->name, AudioEulinear_be, sizeof fp->name);
fp->encoding = AUDIO_ENCODING_ULINEAR_BE;
fp->precision = 16;
fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
return (0);
default:
return (EINVAL);
}
}
/* Todo: don't commit settings to card until we've verified all parameters */
int
neo_set_params(addr, setmode, usemode, play, rec)
void *addr;
int setmode, usemode;
struct audio_params *play, *rec;
{
struct neo_softc *sc = addr;
u_int32_t base;
u_int8_t x;
int mode;
struct audio_params *p;
for (mode = AUMODE_RECORD; mode != -1;
mode = mode == AUMODE_RECORD ? AUMODE_PLAY : -1) {
if ((setmode & mode) == 0)
continue;
p = mode == AUMODE_PLAY ? play : rec;
if (p == NULL) continue;
for (x = 0; x < 8; x++)
if (p->sample_rate < (samplerates[x] + samplerates[x + 1]) / 2)
break;
if (x == 8) return (EINVAL);
p->sample_rate = samplerates[x];
nm_loadcoeff(sc, mode, x);
x <<= 4;
x &= NM_RATE_MASK;
if (p->precision == 16) x |= NM_RATE_BITS_16;
if (p->channels == 2) x |= NM_RATE_STEREO;
base = (mode == AUMODE_PLAY) ?
NM_PLAYBACK_REG_OFFSET : NM_RECORD_REG_OFFSET;
nm_wr(sc, base + NM_RATE_REG_OFFSET, x, 1);
p->factor = 1;
p->sw_code = 0;
switch (p->encoding) {
case AUDIO_ENCODING_SLINEAR_BE:
if (p->precision == 16)
p->sw_code = swap_bytes;
else
p->sw_code = change_sign8;
break;
case AUDIO_ENCODING_SLINEAR_LE:
if (p->precision != 16)
p->sw_code = change_sign8;
break;
case AUDIO_ENCODING_ULINEAR_BE:
if (p->precision == 16) {
if (mode == AUMODE_PLAY)
p->sw_code = swap_bytes_change_sign16;
else
p->sw_code = change_sign16_swap_bytes;
}
break;
case AUDIO_ENCODING_ULINEAR_LE:
if (p->precision == 16)
p->sw_code = change_sign16;
break;
case AUDIO_ENCODING_ULAW:
if (mode == AUMODE_PLAY) {
p->factor = 2;
p->sw_code = mulaw_to_slinear16;
} else
p->sw_code = ulinear8_to_mulaw;
break;
case AUDIO_ENCODING_ALAW:
if (mode == AUMODE_PLAY) {
p->factor = 2;
p->sw_code = alaw_to_slinear16;
} else
p->sw_code = ulinear8_to_alaw;
break;
default:
return (EINVAL);
}
}
return (0);
}
int
neo_round_blocksize(addr, blk)
void *addr;
int blk;
{
return (NM_BUFFSIZE / 2);
}
int
neo_trigger_output(addr, start, end, blksize, intr, arg, param)
void *addr;
void *start, *end;
int blksize;
void (*intr)(void *);
void *arg;
struct audio_params *param;
{
struct neo_softc *sc = addr;
int ssz;
sc->pintr = intr;
sc->parg = arg;
ssz = (param->precision * param->factor == 16)? 2 : 1;
if (param->channels == 2)
ssz <<= 1;
sc->pbufsize = ((char *)end - (char *)start);
sc->pblksize = blksize;
sc->pwmark = blksize;
nm_wr(sc, NM_PBUFFER_START, sc->pbuf, 4);
nm_wr(sc, NM_PBUFFER_END, sc->pbuf + sc->pbufsize - ssz, 4);
nm_wr(sc, NM_PBUFFER_CURRP, sc->pbuf, 4);
nm_wr(sc, NM_PBUFFER_WMARK, sc->pbuf + sc->pwmark, 4);
nm_wr(sc, NM_PLAYBACK_ENABLE_REG, NM_PLAYBACK_FREERUN |
NM_PLAYBACK_ENABLE_FLAG, 1);
nm_wr(sc, NM_AUDIO_MUTE_REG, 0, 2);
return (0);
}
int
neo_trigger_input(addr, start, end, blksize, intr, arg, param)
void *addr;
void *start, *end;
int blksize;
void (*intr)(void *);
void *arg;
struct audio_params *param;
{
struct neo_softc *sc = addr;
int ssz;
sc->rintr = intr;
sc->rarg = arg;
ssz = (param->precision * param->factor == 16)? 2 : 1;
if (param->channels == 2)
ssz <<= 1;
sc->rbufsize = ((char *)end - (char *)start);
sc->rblksize = blksize;
sc->rwmark = blksize;
nm_wr(sc, NM_RBUFFER_START, sc->rbuf, 4);
nm_wr(sc, NM_RBUFFER_END, sc->rbuf + sc->rbufsize, 4);
nm_wr(sc, NM_RBUFFER_CURRP, sc->rbuf, 4);
nm_wr(sc, NM_RBUFFER_WMARK, sc->rbuf + sc->rwmark, 4);
nm_wr(sc, NM_RECORD_ENABLE_REG, NM_RECORD_FREERUN |
NM_RECORD_ENABLE_FLAG, 1);
return (0);
}
int
neo_halt_output(addr)
void *addr;
{
struct neo_softc *sc = (struct neo_softc *)addr;
nm_wr(sc, NM_PLAYBACK_ENABLE_REG, 0, 1);
nm_wr(sc, NM_AUDIO_MUTE_REG, NM_AUDIO_MUTE_BOTH, 2);
sc->pintr = 0;
return (0);
}
int
neo_halt_input(addr)
void *addr;
{
struct neo_softc *sc = (struct neo_softc *)addr;
nm_wr(sc, NM_RECORD_ENABLE_REG, 0, 1);
sc->rintr = 0;
return (0);
}
int
neo_getdev(addr, retp)
void *addr;
struct audio_device *retp;
{
*retp = neo_device;
return (0);
}
int
neo_mixer_set_port(addr, cp)
void *addr;
mixer_ctrl_t *cp;
{
struct neo_softc *sc = addr;
return ((sc->codec_if->vtbl->mixer_set_port)(sc->codec_if, cp));
}
int
neo_mixer_get_port(addr, cp)
void *addr;
mixer_ctrl_t *cp;
{
struct neo_softc *sc = addr;
return ((sc->codec_if->vtbl->mixer_get_port)(sc->codec_if, cp));
}
int
neo_query_devinfo(addr, dip)
void *addr;
mixer_devinfo_t *dip;
{
struct neo_softc *sc = addr;
return ((sc->codec_if->vtbl->query_devinfo)(sc->codec_if, dip));
}
void *
neo_malloc(addr, direction, size, pool, flags)
void *addr;
int direction;
size_t size;
int pool, flags;
{
struct neo_softc *sc = addr;
void *rv = 0;
switch (direction) {
case AUMODE_PLAY:
rv = (char *)sc->bufioh + sc->pbuf;
break;
case AUMODE_RECORD:
rv = (char *)sc->bufioh + sc->rbuf;
break;
default:
break;
}
return (rv);
}
void
neo_free(addr, ptr, pool)
void *addr;
void *ptr;
int pool;
{
return;
}
size_t
neo_round_buffersize(addr, direction, size)
void *addr;
int direction;
size_t size;
{
return (NM_BUFFSIZE);
}
int
neo_get_props(addr)
void *addr;
{
return (AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX);
}
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