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NetBSD/sys/arch/amiga/dev/repulse.c

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/* $NetBSD: repulse.c,v 1.11 2004/11/09 16:18:58 kent Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Ignatios Souvatzis.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: repulse.c,v 1.11 2004/11/09 16:18:58 kent Exp $");
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/fcntl.h> /* FREAD */
#include <machine/bus.h>
#include <sys/audioio.h>
#include <dev/audio_if.h>
#include <dev/mulaw.h>
#include <dev/ic/ac97reg.h>
#include <dev/ic/ac97var.h>
#include <amiga/dev/zbusvar.h>
#include <amiga/amiga/isr.h>
#include <amiga/dev/repulse_firmware.h>
#ifndef vu_int8_t
#define vu_int8_t volatile u_int8_t
#endif
#ifndef vu_int16_t
#define vu_int16_t volatile u_int16_t
#endif
#ifndef vu_int32_t
#define vu_int32_t volatile u_int32_t
#endif
/* ac97 attachment functions */
int repac_attach(void *, struct ac97_codec_if *);
int repac_read(void *, u_int8_t, u_int16_t *);
int repac_write(void *, u_int8_t, u_int16_t);
int repac_reset(void *);
enum ac97_host_flag repac_flags(void *);
/* audio attachment functions */
int rep_open(void *, int);
void rep_close(void *);
int rep_getdev(void *, struct audio_device *);
int rep_get_props(void *);
int rep_halt_output(void *);
int rep_halt_input(void *);
int rep_query_encoding(void *, struct audio_encoding *);
int rep_set_params(void *, int, int, struct audio_params *,
struct audio_params *);
int rep_round_blocksize(void *, int);
int rep_set_port(void *, mixer_ctrl_t *);
int rep_get_port(void *, mixer_ctrl_t *);
int rep_query_devinfo(void *, mixer_devinfo_t *);
size_t rep_round_buffersize(void *, int, size_t);
int rep_start_input(void *, void *, int, void (*)(void *), void *);
int rep_start_output(void *, void *, int, void (*)(void *), void *);
int rep_intr(void *tag);
/* audio attachment */
const struct audio_hw_if rep_hw_if = {
rep_open,
rep_close,
/* drain */ 0,
rep_query_encoding,
rep_set_params,
rep_round_blocksize,
/* commit_setting */ 0,
/* init_output */ 0,
/* init_input */ 0,
rep_start_output,
rep_start_input,
rep_halt_output,
rep_halt_input,
/* speaker_ctl */ 0,
rep_getdev,
/* getfd */ 0,
rep_set_port,
rep_get_port,
rep_query_devinfo,
/* allocm */ 0,
/* freem */ 0,
rep_round_buffersize,
/* mappage */ 0,
rep_get_props,
/* trigger_output */ 0,
/* trigger_input */ 0,
/* dev_ioctl */ 0,
};
/* hardware registers */
struct repulse_hw {
vu_int16_t rhw_status;
vu_int16_t rhw_fifostatus; /* 0xrrrrpppp0000flag */
vu_int16_t rhw_reg_address;
vu_int16_t rhw_reg_data;
/* 0x08 */
vu_int16_t rhw_fifo_lh;
vu_int16_t rhw_fifo_ll;
vu_int16_t rhw_fifo_rh;
vu_int16_t rhw_fifo_rl;
/* 0x10 */
vu_int16_t rhw_fifo_pack;
vu_int16_t rhw_play_fifosz;
vu_int32_t rhw_spdifin_stat;
#define rhw_spdifout_stat rhw_spdifin_stat;
/* 0x18 */
vu_int16_t rhw_capt_fifosz;
vu_int16_t rhw_version;
vu_int16_t rhw_dummy1;
vu_int8_t rhw_firmwareload;
/* 0x1F */
vu_int8_t rhw_dummy2[66 - 31];
/* 0x42 */
vu_int16_t rhw_reset;
} /* __attribute__((packed)) */;
#define REPSTATUS_PLAY 0x0001
#define REPSTATUS_RECORD 0x0002
#define REPSTATUS_PLAYFIFORST 0x0004
#define REPSTATUS_RECFIFORST 0x0008
#define REPSTATUS_REGSENDBUSY 0x0010
#define REPSTATUS_LOOPBACK 0x0020
#define REPSTATUS_ENSPDIFIN 0x0040
#define REPSTATUS_ENSPDIFOUT 0x0080
#define REPSTATUS_CODECRESET 0x0200
#define REPSTATUS_SPDIFOUT24 0x0400
#define REPSTATUS_SPDIFIN24 0x0800
#define REPSTATUS_RECIRQENABLE 0x1000
#define REPSTATUS_RECIRQACK 0x2000
#define REPSTATUS_PLAYIRQENABLE 0x4000
#define REPSTATUS_PLAYIRQACK 0x8000
#define REPFIFO_PLAYFIFOFULL 0x0001
#define REPFIFO_PLAYFIFOEMPTY 0x0002
#define REPFIFO_RECFIFOFULL 0x0004
#define REPFIFO_RECFIFOEMPTY 0x0008
#define REPFIFO_PLAYFIFOGAUGE(x) ((x << 4) & 0xf000)
#define REPFIFO_RECFIFOGAUGE(x) (x & 0xf000)
/* ac97 data stream transfer functions */
void rep_read_16_stereo(struct repulse_hw *, u_int8_t *, int, unsigned);
void rep_read_16_mono(struct repulse_hw *, u_int8_t *, int, unsigned);
void rep_write_16_stereo(struct repulse_hw *, u_int8_t *, int, unsigned);
void rep_write_16_mono(struct repulse_hw *, u_int8_t *, int, unsigned);
void rep_read_8_stereo(struct repulse_hw *, u_int8_t *, int, unsigned);
void rep_read_8_mono(struct repulse_hw *, u_int8_t *, int, unsigned);
void rep_write_8_stereo(struct repulse_hw *, u_int8_t *, int, unsigned);
void rep_write_8_mono(struct repulse_hw *, u_int8_t *, int, unsigned);
/* AmigaDOS Delay() ticks */
#define USECPERTICK (1000000/50)
/* NetBSD device attachment */
struct repulse_softc {
struct device sc_dev;
struct isr sc_isr;
struct ac97_host_if sc_achost;
struct ac97_codec_if *sc_codec_if;
struct repulse_hw *sc_boardp;
void (*sc_captmore)(void *);
void *sc_captarg;
void (*sc_captfun)(struct repulse_hw *, u_int8_t *, int, unsigned);
void *sc_captbuf;
int sc_captscale;
int sc_captbufsz;
unsigned sc_captflags;
void (*sc_playmore)(void *);
void *sc_playarg;
void (*sc_playfun)(struct repulse_hw *, u_int8_t *, int, unsigned);
int sc_playscale;
unsigned sc_playflags;
};
int repulse_match (struct device *, struct cfdata *, void *);
void repulse_attach (struct device *, struct device *, void *);
CFATTACH_DECL(repulse, sizeof(struct repulse_softc),
repulse_match, repulse_attach, NULL, NULL);
int
repulse_match(struct device *parent, struct cfdata *cfp, void *aux) {
struct zbus_args *zap;
zap = aux;
if (zap->manid != 0x4144)
return (0);
if (zap->prodid != 0)
return (0);
return (1);
}
void
repulse_attach(struct device *parent, struct device *self, void *aux) {
struct repulse_softc *sc;
struct zbus_args *zap;
struct repulse_hw *bp;
u_int8_t *fwp;
int needs_firmware;
u_int16_t a;
sc = (struct repulse_softc *)self;
zap = aux;
bp = (struct repulse_hw *)zap->va;
sc->sc_boardp = bp;
needs_firmware = 0;
if (bp->rhw_fifostatus & 0x00f0)
needs_firmware = 1;
else {
bp->rhw_status = 0x000c;
if (bp->rhw_status != 0 || bp->rhw_fifostatus != 0x0f0a)
needs_firmware = 1;
}
printf(": ");
if (needs_firmware) {
printf("loading ");
bp->rhw_reset = 0;
delay(1 * USECPERTICK);
for (fwp = (u_int8_t *)repulse_firmware;
fwp < (repulse_firmware_size +
(u_int8_t *)repulse_firmware); fwp++)
bp->rhw_firmwareload = *fwp;
delay(1 * USECPERTICK);
if (bp->rhw_fifostatus & 0x00f0)
goto Initerr;
a = /* bp->rhw_status;
a |= */ REPSTATUS_CODECRESET;
bp->rhw_status = a;
a = bp->rhw_status;
if ((a & REPSTATUS_CODECRESET) == 0)
goto Initerr;
(void)bp->rhw_status;
(void)bp->rhw_status;
(void)bp->rhw_status;
a = bp->rhw_status;
a &= ~REPSTATUS_CODECRESET;
bp->rhw_status = a;
}
printf("firmware version 0x%x\n", bp->rhw_version);
sc->sc_achost.arg = sc;
sc->sc_achost.reset = repac_reset;
sc->sc_achost.read = repac_read;
sc->sc_achost.write = repac_write;
sc->sc_achost.attach = repac_attach;
sc->sc_achost.flags = 0;
if (ac97_attach(&sc->sc_achost)) {
printf("%s: error attaching codec\n", self->dv_xname);
return;
}
#ifdef DIAGNOSTIC
/*
* Print a warning if the codec doesn't support hardware variable
* rate audio. As the initial incarnations of the Repulse board
* are AC'97 2.1, it is epxected that we'll always have VRA.
*/
/*
* XXX this should be a panic(). OTOH, audio codec speed is not
* important enough to do this.
*/
a = sc->sc_codec_if->vtbl->get_extcaps(sc->sc_codec_if);
if (!(a & AC97_EXT_AUDIO_VRA)) {
printf("%s: warning: codec doesn't support "
"hardware AC'97 2.0 Variable Rate Audio\n",
sc->sc_dev.dv_xname);
}
#endif
sc->sc_isr.isr_ipl = 2;
sc->sc_isr.isr_arg = sc;
sc->sc_isr.isr_intr = rep_intr;
add_isr(&sc->sc_isr);
audio_attach_mi(&rep_hw_if, sc, &sc->sc_dev);
return;
Initerr:
printf("\n%s: firmware not successfully loaded\n", self->dv_xname);
return;
}
int repac_reset(void *arg) {
struct repulse_softc *sc = arg;
struct repulse_hw *bp = sc->sc_boardp;
u_int16_t a;
a = bp->rhw_status;
a |= REPSTATUS_CODECRESET;
bp->rhw_status = a;
a = bp->rhw_status;
#ifdef DIAGNOSTIC
if ((a & REPSTATUS_CODECRESET) == 0)
panic("%s: cannot set reset bit", sc->sc_dev.dv_xname);
#endif
a = bp->rhw_status;
a = bp->rhw_status;
a = bp->rhw_status;
a = bp->rhw_status;
a &= ~REPSTATUS_CODECRESET;
bp->rhw_status = a;
return 0;
}
int repac_read(void *arg, u_int8_t reg, u_int16_t *valuep) {
struct repulse_softc *sc = arg;
struct repulse_hw *bp = sc->sc_boardp;
while (bp->rhw_status & REPSTATUS_REGSENDBUSY);
bp->rhw_reg_address = (reg & 0x7F) | 0x80;
while (bp->rhw_status & REPSTATUS_REGSENDBUSY);
*valuep = bp->rhw_reg_data;
return 0;
}
int repac_write(void *arg, u_int8_t reg, u_int16_t value) {
struct repulse_softc *sc = arg;
struct repulse_hw *bp = sc->sc_boardp;
bp->rhw_reg_data = value;
bp->rhw_reg_address = reg & 0x7F;
while (bp->rhw_status & REPSTATUS_REGSENDBUSY);
return 0;
}
int repac_attach(void *arg, struct ac97_codec_if *acip){
struct repulse_softc *sc;
sc = arg;
sc->sc_codec_if = acip;
return 0;
}
/* audio(9) support stuff which is not ac97-constant */
int
rep_open(void *arg, int flags)
{
return 0;
}
void
rep_close(void *arg)
{
struct repulse_softc *sc = arg;
rep_halt_output(sc);
rep_halt_input(sc);
}
int
rep_getdev(void *arg, struct audio_device *retp)
{
struct repulse_softc *sc = arg;
struct repulse_hw *bp = sc->sc_boardp;
if (retp) {
strncpy(retp->name, "Repulse", sizeof(retp->name));
snprintf(retp->version, sizeof(retp->version), "0x%x",
bp->rhw_version);
strncpy(retp->config, "", sizeof(retp->config));
}
return 0;
}
int
rep_get_props(void *v)
{
return (AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX);
}
int
rep_halt_output(void *arg)
{
struct repulse_softc *sc = arg;
struct repulse_hw *bp = sc->sc_boardp;
bp->rhw_status &= ~(REPSTATUS_PLAYIRQENABLE|REPSTATUS_PLAY);
return 0;
}
int
rep_halt_input(void *arg)
{
struct repulse_softc *sc = arg;
struct repulse_hw *bp = sc->sc_boardp;
bp->rhw_status &= ~(REPSTATUS_RECIRQENABLE|REPSTATUS_RECORD);
return 0;
}
/*
* Encoding support.
*
* TODO: add 24bit and 32bit modes here and in setparams.
*/
const struct repulse_encoding_query {
const char *name;
int encoding, precision, flags;
} rep_encoding_queries[] = {
{ AudioEulinear, AUDIO_ENCODING_ULINEAR, 8, 0},
{ AudioEmulaw, AUDIO_ENCODING_ULAW, 8, AUDIO_ENCODINGFLAG_EMULATED},
{ AudioEalaw, AUDIO_ENCODING_ALAW, 8, AUDIO_ENCODINGFLAG_EMULATED},
{ AudioEslinear, AUDIO_ENCODING_SLINEAR, 8, 0},
{ AudioEslinear_le, AUDIO_ENCODING_SLINEAR_LE, 16, 0},
{ AudioEulinear_le, AUDIO_ENCODING_ULINEAR_LE, 16, 0},
{ AudioEulinear_be, AUDIO_ENCODING_ULINEAR_BE, 16, 0},
{ AudioEslinear_be, AUDIO_ENCODING_SLINEAR_BE, 16, 0},
};
int
rep_query_encoding(void *arg, struct audio_encoding *fp)
{
int i;
const struct repulse_encoding_query *p;
i = fp->index;
if (i >= sizeof(rep_encoding_queries) /
sizeof(struct repulse_encoding_query))
return (EINVAL);
p = &rep_encoding_queries[i];
strncpy (fp->name, p->name, sizeof(fp->name));
fp->encoding = p->encoding;
fp->precision = p->precision;
fp->flags = p->flags;
return (0);
}
/*
* XXX the following three functions need to be enhanced for the FPGA s/pdif
* mode. Generic ac97 versions for now.
*/
int
rep_get_port(void *arg, mixer_ctrl_t *cp)
{
struct repulse_softc *sc = arg;
return (sc->sc_codec_if->vtbl->mixer_get_port(sc->sc_codec_if, cp));
}
int
rep_set_port(void *arg, mixer_ctrl_t *cp)
{
struct repulse_softc *sc = arg;
return (sc->sc_codec_if->vtbl->mixer_set_port(sc->sc_codec_if, cp));
}
int
rep_query_devinfo (void *arg, mixer_devinfo_t *dip)
{
struct repulse_softc *sc = arg;
return (sc->sc_codec_if->vtbl->query_devinfo(sc->sc_codec_if, dip));
}
int
rep_round_blocksize(void *arg, int blk)
{
int b1;
b1 = (blk & -32);
if (b1 > 65536 / 2 / 2 /* channels */ / 4 /* bytes per channel */)
b1 = 65536 / 2 / 2 / 4;
return (b1);
}
size_t
rep_round_buffersize(void *arg, int direction, size_t size)
{
return size;
}
int
rep_set_params(void *addr, int setmode, int usemode,
struct audio_params *play, struct audio_params *rec)
{
struct repulse_softc *sc = addr;
struct audio_params *p;
int mode, reg;
unsigned flags;
u_int16_t a;
/* for mode in (RECORD, PLAY) */
for (mode = AUMODE_RECORD; mode != -1;
mode = mode == AUMODE_RECORD ? AUMODE_PLAY : -1) {
if ((setmode & mode) == 0)
continue;
p = mode == AUMODE_PLAY ? play : rec;
/* TODO XXX we can do upto 32bit, 96000 */
if (p->sample_rate < 4000 || p->sample_rate > 48000 ||
(p->precision != 8 && p->precision != 16) ||
(p->channels != 1 && p->channels != 2))
return (EINVAL);
reg = mode == AUMODE_PLAY ?
AC97_REG_PCM_FRONT_DAC_RATE : AC97_REG_PCM_LR_ADC_RATE;
repac_write(sc, reg, (u_int16_t) p->sample_rate);
repac_read(sc, reg, &a);
p->sample_rate = a;
if (mode == AUMODE_PLAY)
sc->sc_playscale = p->channels * p->precision / 8;
else
sc->sc_captscale = p->channels * p->precision / 8;
p->factor = 1;
p->sw_code = 0;
/* everything else is software, alas... */
/* XXX TBD signed/unsigned, *law, etc */
flags = 0;
if (p->encoding == AUDIO_ENCODING_ULINEAR_LE ||
p->encoding == AUDIO_ENCODING_ULINEAR_BE ||
p->encoding == AUDIO_ENCODING_ULINEAR)
flags |= 1;
if (p->encoding == AUDIO_ENCODING_SLINEAR_LE ||
p->encoding == AUDIO_ENCODING_ULINEAR_LE)
flags |= 2;
if (mode == AUMODE_PLAY) {
sc->sc_playflags = flags;
if (p->encoding == AUDIO_ENCODING_ULAW) {
sc->sc_playfun = p->channels == 1 ?
rep_write_16_mono :
rep_write_16_stereo;
sc->sc_playflags = 0;
sc->sc_playscale = p->channels * 2;
p->sw_code = mulaw_to_slinear16_be;
p->factor = 2;
} else
if (p->encoding == AUDIO_ENCODING_ALAW) {
sc->sc_playfun = p->channels == 1 ?
rep_write_16_mono :
rep_write_16_stereo;
sc->sc_playflags = 0;
sc->sc_playscale = p->channels * 2;
p->sw_code = alaw_to_slinear16_be;
p->factor = 2;
} else
if (p->precision == 8 && p->channels == 1)
sc->sc_playfun = rep_write_8_mono;
else if (p->precision == 8 && p->channels == 2)
sc->sc_playfun = rep_write_8_stereo;
else if (p->precision == 16 && p->channels == 1)
sc->sc_playfun = rep_write_16_mono;
else if (p->precision == 16 && p->channels == 2)
sc->sc_playfun = rep_write_16_stereo;
} else {
sc->sc_captflags = flags;
if (p->encoding == AUDIO_ENCODING_ULAW) {
sc->sc_captfun = p->channels == 1 ?
rep_read_8_mono :
rep_read_8_stereo;
sc->sc_captflags = 0;
p->sw_code = slinear8_to_mulaw;
p->factor = 1;
} else
if (p->encoding == AUDIO_ENCODING_ALAW) {
sc->sc_captfun = p->channels == 1 ?
rep_read_8_mono :
rep_read_8_stereo;
sc->sc_captflags = 0;
p->sw_code = slinear8_to_alaw;
p->factor = 1;
} else
if (p->precision == 8 && p->channels == 1)
sc->sc_captfun = rep_read_8_mono;
else if (p->precision == 8 && p->channels == 2)
sc->sc_captfun = rep_read_8_stereo;
else if (p->precision == 16 && p->channels == 1)
sc->sc_captfun = rep_read_16_mono;
else if (p->precision == 16 && p->channels == 2)
sc->sc_captfun = rep_read_16_stereo;
}
/* TBD: mu-law, A-law */
}
return 0;
}
void
rep_write_8_mono(struct repulse_hw *bp, u_int8_t *p, int length,
unsigned flags)
{
u_int16_t sample;
u_int16_t xor;
xor = flags & 1 ? 0x8000 : 0;
bp->rhw_fifo_pack = 0;
while (length-- > 0) {
sample = ((*p++) << 8) ^ xor;
bp->rhw_fifo_lh = sample;
bp->rhw_fifo_rh = sample;
}
}
void
rep_write_8_stereo(struct repulse_hw *bp, u_int8_t *p, int length,
unsigned flags)
{
u_int16_t xor;
xor = flags & 1 ? 0x8000 : 0;
bp->rhw_fifo_pack = 0;
while (length-- > 0) {
bp->rhw_fifo_lh = ((*p++) << 8) ^ xor;
bp->rhw_fifo_rh = ((*p++) << 8) ^ xor;
}
}
void
rep_write_16_mono(struct repulse_hw *bp, u_int8_t *p, int length,
unsigned flags)
{
u_int16_t *q = (u_int16_t *)p;
u_int16_t sample;
u_int16_t xor;
xor = flags & 1 ? 0x8000 : 0;
bp->rhw_fifo_pack = 0;
if (flags & 2) {
while (length > 0) {
sample = bswap16(*q++) ^ xor;
bp->rhw_fifo_lh = sample;
bp->rhw_fifo_rh = sample;
length -= 2;
}
return;
}
while (length > 0) {
sample = (*q++) ^ xor;
bp->rhw_fifo_lh = sample;
bp->rhw_fifo_rh = sample;
length -= 2;
}
}
void
rep_write_16_stereo(struct repulse_hw *bp, u_int8_t *p, int length,
unsigned flags)
{
u_int16_t *q = (u_int16_t *)p;
u_int16_t xor;
xor = flags & 1 ? 0x8000 : 0;
bp->rhw_fifo_pack = 0;
if (flags & 2) {
while (length > 0) {
bp->rhw_fifo_lh = bswap16(*q++) ^ xor;
bp->rhw_fifo_rh = bswap16(*q++) ^ xor;
length -= 4;
}
return;
}
while (length > 0) {
bp->rhw_fifo_lh = (*q++) ^ xor;
bp->rhw_fifo_rh = (*q++) ^ xor;
length -= 4;
}
}
void
rep_read_8_mono(struct repulse_hw *bp, u_int8_t *p, int length,
unsigned flags)
{
u_int16_t v;
u_int16_t xor;
xor = flags & 1 ? 0x8000 : 0;
while (length > 0) {
*p++ = (bp->rhw_fifo_lh ^ xor) >> 8;
v = bp->rhw_fifo_rh;
length--;
}
}
void
rep_read_16_mono(struct repulse_hw *bp, u_int8_t *p, int length,
unsigned flags)
{
u_int16_t *q = (u_int16_t *)p;
u_int16_t v;
u_int16_t xor;
xor = flags & 1 ? 0x8000 : 0;
if (flags & 2) {
while (length > 0) {
*q++ = bswap16(bp->rhw_fifo_lh ^ xor);
v = bp->rhw_fifo_rh;
length -= 2;
}
return;
}
while (length > 0) {
*q++ = bp->rhw_fifo_lh ^ xor;
v = bp->rhw_fifo_rh;
length -= 2;
}
}
void
rep_read_8_stereo(struct repulse_hw *bp, u_int8_t *p, int length,
unsigned flags)
{
u_int16_t xor;
xor = flags & 1 ? 0x8000 : 0;
while (length > 0) {
*p++ = (bp->rhw_fifo_lh ^ xor) >> 8;
*p++ = (bp->rhw_fifo_rh ^ xor) >> 8;
length -= 2;
}
}
void
rep_read_16_stereo(struct repulse_hw *bp, u_int8_t *p, int length,
unsigned flags)
{
u_int16_t *q = (u_int16_t *)p;
u_int16_t xor;
xor = flags & 1 ? 0x8000 : 0;
if (flags & 2) {
while (length > 0) {
*q++ = bswap16(bp->rhw_fifo_lh ^ xor);
*q++ = bswap16(bp->rhw_fifo_rh ^ xor);
length -= 4;
}
return;
}
while (length > 0) {
*q++ = bp->rhw_fifo_lh ^ xor;
*q++ = bp->rhw_fifo_rh ^ xor;
length -= 4;
}
}
/*
* At this point the transfer function is set.
*/
int
rep_start_output(void *addr, void *block, int blksize,
void (*intr)(void*), void *intrarg) {
struct repulse_softc *sc;
u_int8_t *buf;
struct repulse_hw *bp;
u_int16_t status;
sc = addr;
bp = sc->sc_boardp;
buf = block;
/* TODO: prepare hw if necessary */
status = bp->rhw_status;
if (!(status & REPSTATUS_PLAY))
bp->rhw_status = status |
REPSTATUS_PLAY | REPSTATUS_PLAYFIFORST;
/* copy data */
(*sc->sc_playfun)(bp, buf, blksize, sc->sc_playflags);
/* TODO: set hw if necessary */
if (intr) {
bp->rhw_status |= REPSTATUS_PLAYIRQENABLE;
bp->rhw_play_fifosz = blksize / sc->sc_playscale / 2;
/* /2: give us time to return on the first call */
}
/* save callback function */
sc->sc_playarg = intrarg;
sc->sc_playmore = intr;
return 0;
}
int
rep_start_input(void *addr, void *block, int blksize,
void (*intr)(void*), void *intrarg) {
struct repulse_softc *sc;
struct repulse_hw *bp;
u_int16_t status;
sc = addr;
bp = sc->sc_boardp;
sc->sc_captbuf = block;
sc->sc_captbufsz = blksize;
sc->sc_captarg = intrarg;
sc->sc_captmore = intr;
status = bp->rhw_status;
if (!(status & REPSTATUS_RECORD))
bp->rhw_status = status | REPSTATUS_RECORD
| REPSTATUS_RECFIFORST;
bp->rhw_status |= REPSTATUS_RECIRQENABLE;
bp->rhw_capt_fifosz = blksize / sc->sc_captscale;
return 0;
}
/* irq handler */
int
rep_intr(void *tag) {
struct repulse_softc *sc;
struct repulse_hw *bp;
int foundone;
u_int16_t status;
foundone = 0;
sc = tag;
bp = sc->sc_boardp;
status = bp->rhw_status;
if (status & REPSTATUS_PLAYIRQACK) {
foundone = 1;
status &= ~REPSTATUS_PLAYIRQENABLE;
bp->rhw_status = status;
(*sc->sc_playmore)(sc->sc_playarg);
}
if (status & REPSTATUS_RECIRQACK) {
foundone = 1;
status &= ~REPSTATUS_RECIRQENABLE;
bp->rhw_status = status;
(*sc->sc_captfun)(bp, sc->sc_captbuf, sc->sc_captbufsz,
sc->sc_captflags);
(*sc->sc_captmore)(sc->sc_captarg);
}
return foundone;
}
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