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freebsd/sys/dev/pcm/isa/sb.c
Luigi Rizzo 4964edb0c6 Extend the callback mechanism and add hooks to support PCI cards. 
Remove a few unused variables.
1998-12-31 07:34:01 +00:00

1360 lines
35 KiB
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/*
* sound/sb_dsp.c
*
* driver for the SoundBlaster and clones.
*
* Copyright 1997,1998 Luigi Rizzo.
*
* Derived from files in the Voxware 3.5 distribution,
* Copyright by Hannu Savolainen 1994, under the same copyright
* conditions.
*
* 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.
*
*/
/*
* use this as a template file for board-specific drivers.
* The next two lines (and the final #endif) are in all drivers:
*/
#include <i386/isa/snd/sound.h>
#if NPCM > 0
/*
* Begin with the board-specific include files...
*/
#define __SB_MIXER_C__ /* XXX warning... */
#include <i386/isa/snd/sbcard.h>
/*
* then prototypes of functions which go in the snddev_info
* (usually static, unless they are shared by other modules)...
*/
static int sb_probe(struct isa_device *dev);
static int sb_attach(struct isa_device *dev);
static d_open_t sb_dsp_open;
static d_close_t sb_dsp_close;
static d_ioctl_t sb_dsp_ioctl;
static irq_proc_t sb_intr;
static snd_callback_t sb_callback;
/*
* and prototypes for other private functions defined in this module.
*/
static void sb_dsp_init(snddev_info *d, struct isa_device *dev);
static void sb_mix_init(snddev_info *d);
static int sb_mixer_set(snddev_info *d, int dev, int value);
static int dsp_speed(snddev_info *d);
static void sb_mixer_reset(snddev_info *d);
u_int sb_get_byte(int io_base);
int ess_write(int io_base, u_char reg, int val);
int ess_read(int io_base, u_char reg);
/*
* Then put here the descriptors for the various boards supported
* by this module, properly initialized.
*/
snddev_info sb_op_desc = {
"basic soundblaster",
SNDCARD_SB,
sb_probe,
sb_attach,
sb_dsp_open,
sb_dsp_close /* sb_close */,
NULL /* use generic sndread */,
NULL /* use generic sndwrite */,
sb_dsp_ioctl,
sndselect,
sb_intr,
sb_callback,
DSP_BUFFSIZE, /* bufsize */
AFMT_STEREO | AFMT_U8, /* audio format */
} ;
/*
* Then the file continues with the body of all functions
* directly referenced in the descriptor.
*/
/*
* the probe routine for the SoundBlaster only consists in
* resetting the dsp and testing if it is there.
* Version detection etc. will be done at attach time.
*
* Remember, ISA probe routines are supposed to return the
* size of io space used.
*/
static int
sb_probe(struct isa_device *dev)
{
bzero(&pcm_info[dev->id_unit], sizeof(pcm_info[dev->id_unit]) );
if (dev->id_iobase == -1) {
dev->id_iobase = 0x220;
BVDDB(printf("sb_probe: no address supplied, try defaults (0x220,0x240)\n");)
if (snd_conflict(dev->id_iobase))
dev->id_iobase = 0x240;
}
if (snd_conflict(dev->id_iobase))
return 0 ;
if (sb_reset_dsp(dev->id_iobase))
return 16 ; /* the SB uses 16 registers... */
else
return 0;
}
static int
sb_attach(struct isa_device *dev)
{
snddev_info *d = &pcm_info[dev->id_unit] ;
dev->id_alive = 16 ; /* number of io ports */
/* should be already set but just in case... */
sb_dsp_init(d, dev);
return 0 ;
}
/*
* here are the main routines from the switches.
*/
/*
* Unlike MSS, the sb only supports a single open (does not mean
* that only a single process is using it, since it can fork
* afterwards, or pass the descriptor to another process).
*
*/
static int
sb_dsp_open(dev_t dev, int flags, int mode, struct proc * p)
{
snddev_info *d;
int unit ;
dev = minor(dev);
unit = dev >> 4 ;
d = &pcm_info[unit] ;
DEB(printf("<%s>%d : open\n", d->name, unit));
if (d->flags & SND_F_BUSY) {
DEB(printf("<%s>%d open: device busy\n", d->name, unit));
return EBUSY ;
}
d->wsel.si_pid = 0;
d->wsel.si_flags = 0;
d->rsel.si_pid = 0;
d->rsel.si_flags = 0;
d->dbuf_out.total = d->dbuf_out.prev_total = 0 ;
d->dbuf_in.total = d->dbuf_in.prev_total = 0 ;
d->flags = 0 ;
d->bd_flags &= ~BD_F_HISPEED ;
switch ( dev & 0xf ) {
case SND_DEV_DSP16 :
if ((d->audio_fmt & AFMT_S16_LE) == 0) {
printf("sorry, 16-bit not supported on SB %d.%02d\n",
(d->bd_id >>8) & 0xff, d->bd_id & 0xff);
return ENXIO;
}
d->play_fmt = d->rec_fmt = AFMT_S16_LE ;
break;
case SND_DEV_AUDIO :
d->play_fmt = d->rec_fmt = AFMT_MU_LAW ;
break ;
case SND_DEV_DSP :
d->play_fmt = d->rec_fmt = AFMT_U8 ;
break ;
}
/*
* since the SB is not simmetric, I use the open mode to select
* which channel should be privileged, and disable I/O in the
* other direction.
* In case the board is opened RW, we don't have enough
* information on what to do. Temporarily, privilege the
* playback channel, which is used more often, and set the other
* one to U8.
*/
if ( (flags & FREAD) == 0) /* opened write only */
d->rec_fmt = 0 ;
else if ( (flags & FWRITE) == 0) /* opened read only */
d->play_fmt = 0 ;
else /* opened read/write */
d->rec_fmt = (d->play_fmt == AFMT_S16_LE) ? AFMT_U8 : AFMT_S16_LE ;
d->flags |= SND_F_BUSY ;
d->play_speed = d->rec_speed = DSP_DEFAULT_SPEED ;
if (flags & O_NONBLOCK)
d->flags |= SND_F_NBIO ;
sb_reset_dsp(d->io_base);
if (d->bd_flags & BD_F_ESS)
sb_cmd(d->io_base, 0xc6 ); /* enable extended ESS mode */
ask_init(d);
return 0;
}
static int
sb_dsp_close(dev_t dev, int flags, int mode, struct proc * p)
{
int unit;
snddev_info *d;
u_long s;
dev = minor(dev);
unit = dev >> 4 ;
d = &pcm_info[unit] ;
s = spltty();
d->flags |= SND_F_CLOSING ;
splx(s);
snd_flush(d);
sb_cmd(d->io_base, DSP_CMD_SPKOFF ); /* XXX useless ? */
d->flags = 0 ;
return 0 ;
}
static int
sb_dsp_ioctl(dev_t dev, u_long cmd, caddr_t arg, int mode, struct proc * p)
{
int unit;
snddev_info *d;
dev = minor(dev);
unit = dev >> 4 ;
d = &pcm_info[unit] ;
/*
* handle mixer calls first. Reads are in the default handler,
* so do not bother about them.
*/
if ( (cmd & MIXER_WRITE(0)) == MIXER_WRITE(0) )
return sb_mixer_set(d, cmd & 0xff, *(int *)arg) ;
/*
* for the remaining functions, use the default handler.
* ENOSYS means that the default handler should take care
* of implementing the ioctl.
*/
return ENOSYS ;
}
static void
sb_intr(int unit)
{
snddev_info *d = &pcm_info[unit];
int reason = 3, c=1, io_base = d->io_base;
DEB(printf("got sb_intr for unit %d, flags 0x%08lx\n", unit, d->flags));
/*
* SB < 4.0 is half duplex and has only 1 bit for int source,
* so we fake it. SB 4.x (SB16) has the int source in a separate
* register.
* The Vibra16X has separate flags for 8 and 16 bit transfers, but
* I have no idea how to tell capture from playback interrupts...
*/
#define PLAIN_SB16(x) ( ( (x) & (BD_F_SB16|BD_F_SB16X) ) == BD_F_SB16)
again:
if (d->bd_flags & BD_F_SB16) {
c = sb_getmixer(io_base, IRQ_STAT);
/* this tells us if the source is 8-bit or 16-bit dma. We
* have to check the io channel to map it to read or write...
*/
reason = 0 ;
if ( c & 1 ) { /* 8-bit dma */
if (d->play_fmt == AFMT_U8 || d->play_fmt == AFMT_MU_LAW )
reason |= 1;
if (d->rec_fmt == AFMT_U8 || d->rec_fmt == AFMT_MU_LAW )
reason |= 2;
}
if ( c & 2 ) { /* 16-bit dma */
if (d->play_fmt == AFMT_S16_LE)
reason |= 1;
if (d->rec_fmt == AFMT_S16_LE)
reason |= 2;
}
}
/* XXX previous location of ack... */
DEB(printf("sb_intr, flags 0x%08lx reason %d c 0x%x\n",
d->flags, reason, c));
if ( reason & 1 ) { /* possibly a write interrupt */
if ( d->dbuf_out.dl )
dsp_wrintr(d);
}
if ( reason & 2 ) {
if ( d->dbuf_in.dl )
dsp_rdintr(d);
}
if ( c & 2 )
inb(DSP_DATA_AVL16); /* 16-bit int ack */
if (c & 1)
inb(DSP_DATA_AVAIL); /* 8-bit int ack */
/*
* the sb16 might have multiple sources etc.
*/
if ((d->bd_flags & BD_F_SB16) && (c & 3))
goto again;
}
/*
* device-specific function called back from the dma module.
* The reason of the callback is the second argument.
* NOTE: during operations, some ioctl can be called to change
* settings (e.g. speed, channels, format), and the default
* ioctl handler will just record the change and set the
* flag SND_F_INIT. The callback routine is in charge of applying
* the changes at the next convenient time (typically, at the
* start of operations). For full duplex devices, in some cases the
* init requires both channels to be idle.
*/
static int
sb_callback(snddev_info *d, int reason)
{
int rd = reason & SND_CB_RD ;
snd_dbuf *b = (rd) ? & (d->dbuf_in) : & (d->dbuf_out) ;
int l = b->dl ;
switch (reason & SND_CB_REASON_MASK) {
case SND_CB_INIT : /* called with int enabled and no pending io */
/*
* set the speed
*/
dsp_speed(d);
/*
* set the desired DMA blocksize (influences select behaviour)
*/
snd_set_blocksize(d);
/*
* since native mulaw is not present, emulate it.
*/
if ( (d->play_fmt & AFMT_MU_LAW) || (d->rec_fmt & AFMT_MU_LAW) )
d->flags |= SND_F_XLAT8 ;
else
d->flags &= ~SND_F_XLAT8 ;
/*
* there are too many flavours of SB for my taste... here i try to do
* the proper initialization for each one.
*/
if (PLAIN_SB16(d->bd_flags)) {
/* the original SB16 (non-PnP, or PnP, or Vibra16C)
* can do full duplex using one 16-bit channel
* and one 8-bit channel. It needs to be programmed to
* use split format though.
* I DON'T do this for the Vibra16X because I have no idea
* of what needs to be done there...
*
* I use the following algorithm:
* 1. check which direction(s) are active;
* 2. check if we should swap dma channels
* 3. check if we can do the swap.
*/
int swap = 1 ; /* default... */
if (d->play_fmt == 0) {
/* do whatever the read channel wants */
if ( d->rec_fmt == AFMT_S16_LE && d->dbuf_in.chan > 4 )
swap = 0;
if ( d->rec_fmt != AFMT_S16_LE && d->dbuf_in.chan < 4 )
swap = 0;
} else {
/* privilege the write channel */
if ( d->play_fmt == AFMT_S16_LE && d->dbuf_out.chan > 4 )
swap = 0;
if ( d->play_fmt != AFMT_S16_LE && d->dbuf_out.chan < 4 )
swap = 0;
if ( d->rec_fmt ) {
/* check for possible config errors.
* This cannot happen at open time since even in
* case of opening rw we privilege the play
* channel.
*/
if (d->rec_fmt == d->play_fmt) {
DDB(printf("sorry, read DMA channel unavailable\n"));
}
}
}
DEB(printf("sb16: play_fmt %d, rec_fmt %x, swap %d\n",
d->play_fmt, d->rec_fmt, swap);)
if (swap) {
int c = d->dbuf_in.chan ;
d->dbuf_in.chan = d->dbuf_out.chan;
d->dbuf_out.chan = c ;
}
}
else if (d->bd_flags & BD_F_ESS) {
u_char c;
DEB(printf("SND_CB_INIT, play_fmt == 0x%x, rec_fmt == 0x%x\n",
(int) d->play_fmt, (int) d->rec_fmt));
/* autoinit DMA mode */
if (d->play_fmt)
ess_write(d->io_base, 0xb8, 0x04);
else
ess_write(d->io_base, 0xb8, 0x0e);
c = (ess_read(d->io_base, 0xa8) & ~0x03) | 0x01;
if ((d->flags & SND_F_STEREO) == 0)
c++;
ess_write(d->io_base, 0xa8, c); /* select mono/stereo */
ess_write(d->io_base, 0xb9, 2); /* demand 4 bytes/transfer */
switch (d->play_fmt ? d->play_fmt : d->rec_fmt) {
case AFMT_S16_LE:
if (d->flags & SND_F_STEREO) {
/* 16 bit stereo */
if (d->play_fmt)
ess_write(d->io_base, 0xb6, 0x00);
ess_write(d->io_base, 0xb7, 0x71);
ess_write(d->io_base, 0xb7, 0xbc);
}
else {
/* 16 bit mono */
if (d->play_fmt)
ess_write(d->io_base, 0xb6, 0x00);
ess_write(d->io_base, 0xb7, 0x71);
ess_write(d->io_base, 0xb7, 0xf4);
}
break;
case AFMT_U8:
if (d->flags & SND_F_STEREO) {
/* 8 bit stereo */
if (d->play_fmt)
ess_write(d->io_base, 0xb6, 0x80);
ess_write(d->io_base, 0xb7, 0x51);
ess_write(d->io_base, 0xb7, 0x98);
}
else {
/* 8 bit mono */
if (d->play_fmt)
ess_write(d->io_base, 0xb6, 0x80);
ess_write(d->io_base, 0xb7, 0x51);
ess_write(d->io_base, 0xb7, 0xd0);
}
break;
}
ess_write(d->io_base, 0xb1,
ess_read(d->io_base, 0xb1) | 0x50);
ess_write(d->io_base, 0xb2,
ess_read(d->io_base, 0xb1) | 0x50);
}
reset_dbuf(& (d->dbuf_in), SND_CHAN_RD );
reset_dbuf(& (d->dbuf_out), SND_CHAN_WR );
break ;
case SND_CB_START : /* called with int disabled */
if (d->bd_flags & BD_F_SB16) {
u_char c, c1 ;
if (d->bd_flags & BD_F_SB16X) {
/* just a guess: on the Vibra16X, the first
* op started takes the first dma channel,
* the second one takes the next...
* The default is to be ready for play.
*/
DEB(printf("start %s -- now dma %d:%d\n",
rd ? "rd" : "wr",
d->dbuf_out.chan, d->dbuf_in.chan););
/* swap only if both channels are idle
* play: dl=0, since there is no pause;
* rec: rl=0
*/
if ( rd && d->dbuf_out.dl == 0 && d->dbuf_in.rl == 0 ) {
/* must swap channels, but also save dl */
int c = d->dbuf_in.chan ;
int dl = d->dbuf_in.dl ;
d->dbuf_in.chan = d->dbuf_out.chan;
d->dbuf_out.chan = c ;
reset_dbuf(& (d->dbuf_in), SND_CHAN_RD );
reset_dbuf(& (d->dbuf_out), SND_CHAN_WR );
d->dbuf_in.dl = dl ;
printf("swapped -- now dma %d:%d\n",
d->dbuf_out.chan, d->dbuf_in.chan);
}
}
/*
* XXX note: c1 and l should be set basing on d->rec_fmt,
* but there is no choice once a 16 or 8-bit channel
* is assigned. This means that if the application
* tries to use a bad format, the sound will not be nice.
*/
if ( b->chan > 4
|| (rd && d->rec_fmt == AFMT_S16_LE)
|| (!rd && d->play_fmt == AFMT_S16_LE)
) {
c = DSP_F16_AUTO | DSP_F16_FIFO_ON | DSP_DMA16 ;
c1 = DSP_F16_SIGNED ;
l /= 2 ;
} else {
c = DSP_F16_AUTO | DSP_F16_FIFO_ON | DSP_DMA8 ;
c1 = 0 ;
}
c |= (rd) ? DSP_F16_ADC : DSP_F16_DAC ;
if (d->flags & SND_F_STEREO)
c1 |= DSP_F16_STEREO ;
sb_cmd(d->io_base, c );
sb_cmd3(d->io_base, c1 , l - 1) ;
} else if (d->bd_flags & BD_F_ESS) {
u_long fmt = rd ? d->rec_fmt : d->play_fmt;
DEB(printf("SND_CB_START: %s (%d)\n", rd ? "rd" : "wr", l));
if (fmt == AFMT_S16_LE)
l >>= 1;
l--;
if (!rd)
sb_cmd(d->io_base, DSP_CMD_SPKON);
ess_write(d->io_base, 0xa4, l);
ess_write(d->io_base, 0xa5, l >> 8);
ess_write(d->io_base, 0xb8,
ess_read(d->io_base, 0xb8) | (rd ? 0x0f : 0x05));
} else { /* SBPro -- stereo not supported */
u_char c ;
if (!rd)
sb_cmd(d->io_base, DSP_CMD_SPKON);
/* code for the SB2 and SB3, only MONO */
if (d->bd_flags & BD_F_HISPEED)
c = (rd) ? 0x98 : 0x90 ;
else
c = (rd) ? 0x2c : 0x1c ;
if (d->flags & SND_F_STEREO)
sb_setmixer(d->io_base, 0xe, 2 );
else
sb_setmixer(d->io_base, 0xe, 0 );
/*
* some ESS extensions -- they can do 16 bits
*/
if ( (rd && d->rec_fmt == AFMT_S16_LE) ||
(!rd && d->play_fmt == AFMT_S16_LE) ) {
c |= 1;
l /= 2 ;
}
sb_cmd3(d->io_base, 0x48 , l - 1) ;
sb_cmd(d->io_base, c ) ;
}
break;
case SND_CB_ABORT : /* XXX */
case SND_CB_STOP :
{
int cmd = DSP_CMD_DMAPAUSE_8 ; /* default: halt 8 bit chan */
DEB(printf("SND_CB_XXX: reason 0x%x\n", reason));
if ( b->chan > 4
|| (rd && d->rec_fmt == AFMT_S16_LE)
|| (!rd && d->play_fmt == AFMT_S16_LE)
)
cmd = DSP_CMD_DMAPAUSE_16 ;
if (d->bd_flags & BD_F_HISPEED) {
sb_reset_dsp(d->io_base);
if (d->bd_flags & BD_F_ESS)
sb_cmd(d->io_base, 0xc6 ); /* enable extended ESS mode */
d->flags |= SND_F_INIT ;
} else {
sb_cmd(d->io_base, cmd); /* pause dma. */
/*
* The above seems to have the undocumented side effect of
* blocking the other side as well. If the other
* channel was active (SB16) I have to re-enable it :(
*/
if ( (rd && d->dbuf_out.dl) ||
(!rd && d->dbuf_in.dl) )
sb_cmd(d->io_base, cmd == DSP_CMD_DMAPAUSE_8 ?
0xd6 : 0xd4); /* continue other dma */
}
if (d->bd_flags & BD_F_SB16X) {
/* restore possible swapped channels.
* The default is to be ready for play.
* XXX right now, it kills all input on overflow
*/
if ( rd && d->dbuf_out.dl == 0 ) {
/* must swap channels ? */
int c = d->dbuf_in.chan ;
d->dbuf_in.chan = d->dbuf_out.chan;
d->dbuf_out.chan = c ;
reset_dbuf(& (d->dbuf_in), SND_CHAN_RD );
reset_dbuf(& (d->dbuf_out), SND_CHAN_WR );
printf("restored -- now dma %d:%d\n",
d->dbuf_out.chan, d->dbuf_in.chan);
}
}
}
DEB( sb_cmd(d->io_base, DSP_CMD_SPKOFF) ); /* speaker off */
break ;
}
return 0 ;
}
/*
* The second part of the file contains all functions specific to
* the board and (usually) not exported to other modules.
*/
int
sb_reset_dsp(int io_base)
{
int loopc;
outb(io_base + SBDSP_RST, 3);
DELAY(100);
outb(io_base + SBDSP_RST, 0);
for (loopc = 0; loopc<100 && !(inb(DSP_DATA_AVAIL) & 0x80); loopc++)
DELAY(30);
if (inb(DSP_READ) != 0xAA) {
DEB(printf("sb_reset_dsp 0x%x failed\n", io_base));
return 0; /* Sorry */
}
return 1;
}
/*
* only used in sb_attach from here.
*/
static void
sb_dsp_init(snddev_info *d, struct isa_device *dev)
{
int i, x;
char *fmt = NULL ;
int io_base = dev->id_iobase ;
d->bd_id = 0 ;
sb_reset_dsp(io_base);
sb_cmd(io_base, DSP_CMD_GETVER); /* Get version */
for (i = 10000; i; i--) { /* perhaps wait longer on a fast machine ? */
if (inb(DSP_DATA_AVAIL) & 0x80) { /* wait for Data Ready */
if ( (d->bd_id & 0xff00) == 0)
d->bd_id = inb(DSP_READ) << 8; /* major */
else {
d->bd_id |= inb(DSP_READ); /* minor */
break;
}
} else
DELAY(20);
}
/*
* now do various initializations depending on board id.
*/
fmt = "SoundBlaster %d.%d" ; /* default */
switch ( d->bd_id >> 8 ) {
case 0 :
printf("\n\nFailed to get SB version (%x) - possible I/O conflict\n\n",
inb(DSP_DATA_AVAIL));
d->bd_id = 0x100;
case 1 : /* old sound blaster has nothing... */
break ;
case 2 :
d->dbuf_in.chan = d->dbuf_out.chan ; /* half duplex */
d->bd_flags |= BD_F_DUP_MIDI ;
if (d->bd_id == 0x200)
break ; /* no mixer on the 2.0 */
d->bd_flags &= ~BD_F_MIX_MASK ;
d->bd_flags |= BD_F_MIX_CT1335 ;
break ;
case 4 :
fmt = "SoundBlaster 16 %d.%d";
d->audio_fmt |= AFMT_FULLDUPLEX | AFMT_WEIRD | AFMT_S8 | AFMT_S16_LE;
d->bd_flags |= BD_F_SB16;
d->bd_flags &= ~BD_F_MIX_MASK ;
d->bd_flags |= BD_F_MIX_CT1745 ;
/* soft irq/dma configuration */
x = -1 ;
if (d->irq == 5) x = 2;
else if (d->irq == 7) x = 4;
else if (d->irq == 9) x = 1;
else if (d->irq == 10) x = 8;
if (x == -1)
printf("<%s>%d: bad irq %d (only 5,7,9,10 allowed)\n",
d->name, dev->id_unit, d->irq);
else
sb_setmixer(io_base, IRQ_NR, x);
if (d->dbuf_out.chan == d->dbuf_in.chan) {
printf("WARNING: sb: misconfigured secondary DMA channel\n");
}
sb_setmixer(io_base, DMA_NR, (1 << d->dbuf_out.chan) | (1 << d->dbuf_in.chan));
break ;
case 3 :
d->dbuf_in.chan = d->dbuf_out.chan ; /* half duplex */
fmt = "SoundBlaster Pro %d.%d";
d->bd_flags |= BD_F_DUP_MIDI ;
d->bd_flags &= ~BD_F_MIX_MASK ;
d->bd_flags |= BD_F_MIX_CT1345 ;
if (d->bd_id == 0x301) {
int ess_major = 0, ess_minor = 0;
/*
* Try to detect ESS chips.
*/
sb_cmd(io_base, DSP_CMD_GETID); /* Return ident. bytes. */
for (i = 1000; i; i--) {
if (inb(DSP_DATA_AVAIL) & 0x80) { /* wait for Data Ready */
if (ess_major == 0)
ess_major = inb(DSP_READ);
else {
ess_minor = inb(DSP_READ);
break;
}
} else
DELAY(20);
}
if (ess_major == 0x48 && (ess_minor & 0xf0) == 0x80) {
/* the ESS488 can be treated as an SBPRO */
printf("ESS488 (rev %d)\n", ess_minor & 0x0f);
break ;
}
else if (ess_major == 0x68 && (ess_minor & 0xf0) == 0x80) {
int rev = ess_minor & 0xf;
if (rev >= 8)
printf("ESS1868 (rev %d)\n", rev);
else
printf("ESS688 (rev %d)\n", rev);
d->bd_flags |= BD_F_ESS;
d->audio_fmt |= AFMT_S16_LE;
/* enable extended ESS mode */
sb_cmd(d->io_base, 0xc6);
break;
} else {
printf("Unknown card 0x%x 0x%x -- hope it is SBPRO\n",
ess_major, ess_minor);
break ;
}
}
}
snprintf(d->name, sizeof(d->name),
fmt, (d->bd_id >> 8) &0xff, d->bd_id & 0xff);
sb_mix_init(d);
}
static void
sb_mix_init(snddev_info *d)
{
switch (d->bd_flags & BD_F_MIX_MASK) {
case BD_F_MIX_CT1345 : /* SB 3.0 has 1345 mixer */
d->mix_devs = SBPRO_MIXER_DEVICES ;
d->mix_rec_devs = SBPRO_RECORDING_DEVICES ;
d->mix_recsrc = SOUND_MASK_MIC ;
sb_setmixer(d->io_base, 0, 1 ); /* reset mixer */
sb_setmixer(d->io_base, MIC_VOL , 0x6 ); /* mic volume max */
sb_setmixer(d->io_base, RECORD_SRC , 0x0 ); /* mic source */
sb_setmixer(d->io_base, FM_VOL , 0x0 ); /* no midi */
break ;
case BD_F_MIX_CT1745 : /* SB16 mixer ... */
d->mix_devs = SB16_MIXER_DEVICES ;
d->mix_rec_devs = SB16_RECORDING_DEVICES ;
d->mix_recsrc = SOUND_MASK_MIC ;
}
sb_mixer_reset(d);
}
/*
* Common code for the midi and pcm functions
*
* sb_cmd write a single byte to the CMD port.
* sb_cmd2 write a CMD + 1 byte arg
* sb_cmd3 write a CMD + 2 byte arg
* sb_get_byte returns a single byte from the DSP data port
*
* ess_write is actually sb_cmd2
* ess_read access ext. regs via sb_cmd(0xc0, reg) followed by sb_get_byte
*/
int
sb_cmd(int io_base, u_char val)
{
int i;
for (i = 0; i < 1000 ; i++) {
if ((inb(io_base + SBDSP_STATUS) & 0x80) == 0) {
outb(io_base + SBDSP_CMD, val);
return 1;
}
if (i > 10)
DELAY (i > 100 ? 1000 : 10 );
}
printf("SoundBlaster: DSP Command(0x%02x) timeout. IRQ conflict ?\n", val);
return 0;
}
int
sb_cmd3(int io_base, u_char cmd, int val)
{
if (sb_cmd(io_base, cmd)) {
sb_cmd(io_base, val & 0xff );
sb_cmd(io_base, (val>>8) & 0xff );
return 1 ;
} else
return 0;
}
int
sb_cmd2(int io_base, u_char cmd, int val)
{
if (sb_cmd(io_base, cmd)) {
sb_cmd(io_base, val & 0xff );
return 1 ;
} else
return 0;
}
/*
* in the SB, there is a set of indirect "mixer" registers with
* address at offset 4, data at offset 5
*/
void
sb_setmixer(int io_base, u_int port, u_int value)
{
u_long flags;
flags = spltty();
outb(io_base + SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
DELAY(10);
outb(io_base + SB_MIX_DATA, (u_char) (value & 0xff));
DELAY(10);
splx(flags);
}
int
sb_getmixer(int io_base, u_int port)
{
int val;
u_long flags;
flags = spltty();
outb(io_base + SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
DELAY(10);
val = inb(io_base + SB_MIX_DATA);
DELAY(10);
splx(flags);
return val;
}
u_int
sb_get_byte(int io_base)
{
int i;
for (i = 1000; i; i--)
if (inb(DSP_DATA_AVAIL) & 0x80)
return inb(DSP_READ);
else
DELAY(20);
return 0xffff;
}
int
ess_write(int io_base, u_char reg, int val)
{
return sb_cmd2(io_base, reg, val);
}
int
ess_read(int io_base, u_char reg)
{
if (!sb_cmd(io_base, 0xc0) || !sb_cmd(io_base, reg) )
return 0xffff ;
return sb_get_byte(io_base);
}
/*
* various utility functions for the DSP
*/
/*
* dsp_speed updates the speed setting from the descriptor. make sure
* it is called at spltty().
* Besides, it takes care of stereo setting.
*/
static int
dsp_speed(snddev_info *d)
{
u_char tconst;
u_long flags;
int max_speed = 44100, speed = d->play_speed ;
/*
* special code for the SB16
*/
if (d->bd_flags & BD_F_SB16) {
RANGE (speed, 5000, 45000);
d->play_speed = d->rec_speed = speed ;
sb_cmd(d->io_base, 0x41);
sb_cmd(d->io_base, d->play_speed >> 8 );
sb_cmd(d->io_base, d->play_speed & 0xff );
sb_cmd(d->io_base, 0x42);
sb_cmd(d->io_base, d->rec_speed >> 8 );
sb_cmd(d->io_base, d->rec_speed & 0xff );
return speed ;
}
/*
* special code for the ESS ...
*/
if (d->bd_flags & BD_F_ESS) {
int t;
RANGE (speed, 5000, 49000);
if (speed > 22000) {
t = (795500 + speed / 2) / speed;
speed = (795500 + t / 2) / t ;
t = (256 - t ) | 0x80 ;
} else {
t = (397700 + speed / 2) / speed;
speed = (397700 + t / 2) / t ;
t = 128 - t ;
}
ess_write(d->io_base, 0xa1, t); /* set time constant */
d->play_speed = d->rec_speed = speed ;
speed = (speed * 9 ) / 20 ;
t = 256-7160000/(speed*82);
ess_write(d->io_base,0xa2,t);
return speed ;
}
/*
* This is code for the SB3.x and lower.
* Only some models can do stereo, and only if not
* simultaneously using midi.
* At the moment we do not support either...
*/
#if 0
d->flags &= ~SND_F_STEREO;
#endif
/*
* here enforce speed limitations.
*/
if (d->bd_id <= 0x200)
max_speed = 22050; /* max 22050 on SB 1.X */
/*
* SB models earlier than SB Pro have low limit for the
* input rate. Note that this is only for input, but since
* we do not support separate values for rec & play....
*/
if (d->bd_id <= 0x200)
max_speed = 13000;
else if (d->bd_id < 0x300)
max_speed = 15000;
RANGE(speed, 4000, max_speed);
if (d->flags & SND_F_STEREO) /* really unused right now... */
speed *= 2;
/*
* Now the speed should be valid. Compute the value to be
* programmed into the board.
*/
if (speed > 22050) { /* High speed mode on 2.01/3.xx */
int tmp;
tconst = (u_char) ((65536 - ((256000000 + speed / 2) / speed)) >> 8) ;
d->bd_flags |= BD_F_HISPEED ;
flags = spltty();
sb_cmd2(d->io_base, 0x40, tconst); /* set time constant */
splx(flags);
tmp = 65536 - (tconst << 8);
speed = (256000000 + tmp / 2) / tmp;
} else {
int tmp;
d->bd_flags &= ~BD_F_HISPEED ;
tconst = (256 - ((1000000 + speed / 2) / speed)) & 0xff;
flags = spltty();
sb_cmd2(d->io_base, 0x40, tconst); /* set time constant */
splx(flags);
tmp = 256 - tconst;
speed = (1000000 + tmp / 2) / tmp;
}
if (d->flags & SND_F_STEREO) /* really unused right now... */
speed /= 2;
d->play_speed = d->rec_speed = speed;
return speed;
}
/*
* mixer support, originally in sb_mixer.c
*/
static void
sb_set_recsrc(snddev_info *d, int mask)
{
u_char recdev ;
mask &= d->mix_rec_devs;
switch (d->bd_flags & BD_F_MIX_MASK) {
case BD_F_MIX_CT1345 :
if (mask == SOUND_MASK_LINE)
recdev = 6 ;
else if (mask == SOUND_MASK_CD)
recdev = 2 ;
else { /* default: mic */
mask = SOUND_MASK_MIC ;
recdev = 0 ;
}
sb_setmixer(d->io_base, RECORD_SRC,
recdev | (sb_getmixer(d->io_base, RECORD_SRC) & ~7 ));
break ;
case BD_F_MIX_CT1745 : /* sb16 */
if (mask == 0)
mask = SOUND_MASK_MIC ; /* XXX For compatibility. Bug ? */
recdev = 0 ;
if (mask & SOUND_MASK_MIC)
recdev |= 1 ;
if (mask & SOUND_MASK_CD)
recdev |= 6 ; /* l+r cd */
if (mask & SOUND_MASK_LINE)
recdev |= 0x18 ; /* l+r line */
if (mask & SOUND_MASK_SYNTH)
recdev |= 0x60 ; /* l+r midi */
sb_setmixer(d->io_base, SB16_IMASK_L, recdev);
sb_setmixer(d->io_base, SB16_IMASK_R, recdev);
/*
* since the same volume controls apply to the input and
* output sections, the best approach to have a consistent
* behaviour among cards would be to disable the output path
* on devices which are used to record.
* However, since users like to have feedback, we only disable
* the mike -- permanently.
*/
sb_setmixer(d->io_base, SB16_OMASK, 0x1f & ~1);
break ;
}
d->mix_recsrc = mask;
}
static void
sb_mixer_reset(snddev_info *d)
{
int i;
for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
sb_mixer_set(d, i, levels[i]);
if (d->bd_flags & BD_F_SB16) {
sb_setmixer(d->io_base, 0x3c, 0x1f); /* make all output active */
sb_setmixer(d->io_base, 0x3d, 0); /* make all inputs-l off */
sb_setmixer(d->io_base, 0x3e, 0); /* make all inputs-r off */
}
sb_set_recsrc(d, SOUND_MASK_MIC);
}
static int
sb_mixer_set(snddev_info *d, int dev, int value)
{
int left = value & 0x000000ff;
int right = (value & 0x0000ff00) >> 8;
int regoffs;
u_char val;
mixer_tab *iomap;
#ifdef JAZZ16
if (d->bd_flags & BD_F_JAZZ16 && d->bd_flags & BD_F_JAZZ16_2)
return smw_mixer_set(dev, value);
#endif
if (dev == SOUND_MIXER_RECSRC) {
sb_set_recsrc(d, value);
return 0 ;
}
if (left > 100)
left = 100;
if (right > 100)
right = 100;
if (dev > 31)
return EINVAL ;
if (!(d->mix_devs & (1 << dev))) /* Not supported */
return EINVAL;
switch ( d->bd_flags & BD_F_MIX_MASK ) {
default:
/* mixer unknown, fail... */
return EINVAL ;/* XXX change this */
case BD_F_MIX_CT1345 :
iomap = &sbpro_mix ;
break;
case BD_F_MIX_CT1745 :
iomap = &sb16_mix ;
break;
/* XXX how about the SG NX Pro, iomap = sgnxpro_mix */
}
regoffs = (*iomap)[dev][LEFT_CHN].regno;
if (regoffs == 0)
return EINVAL;
val = sb_getmixer(d->io_base, regoffs);
change_bits(iomap, &val, dev, LEFT_CHN, left);
d->mix_levels[dev] = left | (left << 8);
if ((*iomap)[dev][RIGHT_CHN].regno != regoffs) { /* Change register */
sb_setmixer(d->io_base, regoffs, val); /* Save the old one */
regoffs = (*iomap)[dev][RIGHT_CHN].regno;
if (regoffs == 0)
return 0 ; /* Just left channel present */
val = sb_getmixer(d->io_base, regoffs); /* Read the new one */
}
change_bits(iomap, &val, dev, RIGHT_CHN, right);
sb_setmixer(d->io_base, regoffs, val);
d->mix_levels[dev] = left | (right << 8);
return 0 ; /* ok */
}
/*
* now support for some PnP boards.
*/
#if NPNP > 0
static char *ess1868_probe(u_long csn, u_long vend_id);
static void ess1868_attach(u_long csn, u_long vend_id, char *name,
struct isa_device *dev);
static struct pnp_device ess1868 = {
"ESS1868",
ess1868_probe,
ess1868_attach,
&nsnd, /* use this for all sound cards */
&tty_imask /* imask */
};
DATA_SET (pnpdevice_set, ess1868);
static char *
ess1868_probe(u_long csn, u_long vend_id)
{
/*
* pnp X 1 os enable drq0 3 irq0 12 port0 0x240
*/
if (vend_id == 0x68187316) {
struct pnp_cinfo d ;
read_pnp_parms ( &d , 1 ) ;
if (d.enable == 0) {
printf("This is an ESS1868, but LDN 1 is disabled\n");
return NULL;
}
return "ESS1868" ;
}
return NULL ;
}
static void
ess1868_attach(u_long csn, u_long vend_id, char *name,
struct isa_device *dev)
{
struct pnp_cinfo d ;
snddev_info tmp_d ; /* patched copy of the basic snddev_info */
tmp_d = sb_op_desc;
snddev_last_probed = &tmp_d;
#if 0
read_pnp_parms ( &d , 3 ); /* disable LDN 3 */
d.port[0] = 0 ;
d.enable = 0 ;
write_pnp_parms ( &d , 3 );
read_pnp_parms ( &d , 2 ); /* disable LDN 2 */
d.port[0] = 0 ;
d.enable = 0 ;
write_pnp_parms ( &d , 2 );
read_pnp_parms ( &d , 0 ); /* read config base */
tmp_d.conf_base = d.port[0];
write_pnp_parms ( &d , 0 );
#endif
read_pnp_parms ( &d , 1 ) ;
dev->id_iobase = d.port[0];
d.port[1] = 0 ;
d.port[2] = 0 ;
write_pnp_parms ( &d , 1 );
enable_pnp_card();
dev->id_drq = d.drq[0] ; /* primary dma */
dev->id_irq = (1 << d.irq[0] ) ;
dev->id_intr = (inthand2_t *)pcmintr ;
dev->id_flags = 0 /* DV_F_DUAL_DMA | (d.drq[1] ) */;
#if 0
snddev_last_probed->probe(dev); /* not really necessary but doesn't harm */
#endif
pcmattach(dev);
}
/*
* A driver for some SB16pnp and compatibles...
*
* Avance Asound 100 -- 0x01009305
* Avance Logic ALS100+ -- 0x10019305
* xxx -- 0x2b008c0e
*
*/
static char *sb16pnp_probe(u_long csn, u_long vend_id);
static void sb16pnp_attach(u_long csn, u_long vend_id, char *name,
struct isa_device *dev);
static struct pnp_device sb16pnp = {
"SB16pnp",
sb16pnp_probe,
sb16pnp_attach,
&nsnd, /* use this for all sound cards */
&tty_imask /* imask */
};
DATA_SET (pnpdevice_set, sb16pnp);
static char *
sb16pnp_probe(u_long csn, u_long vend_id)
{
char *s = NULL ;
/*
* The SB16/AWExx cards seem to differ in the fourth byte of
* the vendor id, so I have just masked it for the time being...
* Reported values are:
* SB16 Value PnP: 0x2b008c0e
* SB AWExx PnP: 0x39008c0e 0x9d008c0e 0xc3008c0e
* Vibra16X: 0xf0008c0e
*/
if (vend_id == 0xf0008c0e)
s = "Vibra16X" ;
else if ( (vend_id & 0xffffff) == (0x9d008c0e & 0xffffff) )
s = "SB16 PnP";
else if (vend_id == 0x01009305)
s = "Avance Asound 100" ;
else if (vend_id == 0x10019305)
s = "Avance Logic 100+" ; /* Vibra16X-class */
if (s) {
struct pnp_cinfo d;
read_pnp_parms(&d, 0);
if (d.enable == 0) {
printf("This is a %s, but LDN 0 is disabled\n", s);
return NULL ;
}
return s ;
}
return NULL ;
}
static void
sb16pnp_attach(u_long csn, u_long vend_id, char *name,
struct isa_device *dev)
{
struct pnp_cinfo d ;
snddev_info tmp_d ; /* patched copy of the basic snddev_info */
tmp_d = sb_op_desc;
snddev_last_probed = &tmp_d;
read_pnp_parms ( &d , 0 ) ;
d.port[1] = 0 ; /* only the first address is used */
dev->id_iobase = d.port[0];
tmp_d.synth_base = d.port[2];
write_pnp_parms ( &d , 0 );
enable_pnp_card();
dev->id_drq = d.drq[0] ; /* primary dma */
dev->id_irq = (1 << d.irq[0] ) ;
dev->id_intr = (inthand2_t *)pcmintr ;
dev->id_flags = DV_F_DUAL_DMA | (d.drq[1] ) ;
pcm_info[dev->id_unit] = tmp_d; /* pcm_info[] will be reinitialized after */
snddev_last_probed->probe(dev); /* not really necessary but doesn't harm */
if (vend_id == 0x10019305 || vend_id == 0xf0008c0e) {
/*
* XXX please add here the vend_id for other vibra16X cards...
* And remember, must change tmp_d, not
*/
tmp_d.bd_flags |= BD_F_SB16X ;
}
pcmattach(dev);
}
#endif /* NPNP */
#endif
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