freebsd-dev/sys/i386/isa/sound/sb16_dsp.c
Steven Wallace 1e25d964d2 Reorganize how sound devices are configured. Use a snd controller
with individual devices for each type of sound card:
  opl, sb, sbxvi, sbmidi, pas, mpu, gus, gusxvi, gusmax, mss, uart

EXCLUDE_* options are no longer required to be included in the config file.
They are automatically determined by local.h depending on the devices
included.

Move #includes in local.h to os.h so files are included in the proper
order to avoid warnings.

soundcard.c now has additional code to reflect the device driver
routines needed.

Define new EXCLUDE_SB16MIDI for use in sb16_midi.c and dev_table.h.

#ifndef EXCLUDE_SEQUENCER or EXCLUDE_AUDIO have been added to
soundcard.c and sound_switch.c where appropriate.

Probe outputs changed to reflect new device names.

Readme.freebsd not needed.  Update sound.doc with new config instructions.

Reviewed by:	wollman
1995-03-12 23:34:12 +00:00

579 lines
13 KiB
C

/*
* sound/sb16_dsp.c
*
* The low level driver for the SoundBlaster DSP chip.
*
* (C) 1993 J. Schubert (jsb@sth.ruhr-uni-bochum.de)
*
* based on SB-driver by (C) Hannu Savolainen
*
* 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.
*
* sb16_dsp.c,v 1.8 1994/10/01 02:17:02 swallace Exp
*/
#define DEB(x)
#define DEB1(x)
/*
* #define DEB_DMARES
*/
#include "sound_config.h"
#include "sb.h"
#include "sb_mixer.h"
#if defined(CONFIGURE_SOUNDCARD) && !defined(EXCLUDE_SB16) && !defined(EXCLUDE_SB) && !defined(EXCLUDE_AUDIO) && !defined(EXCLUDE_SBPRO)
extern int sbc_base;
static int sb16_dsp_ok = 0;/*
* * * * Set to 1 after successful *
* * initialization */
static int dsp_16bit = 0;
static int dsp_stereo = 0;
static int dsp_current_speed = 8000; /*
* * * * DSP_DEFAULT_SPEED; */
static int dsp_busy = 0;
static int dma16, dma8;
static unsigned long dsp_count = 0;
static int irq_mode = IMODE_NONE; /*
* * * * IMODE_INPUT, IMODE_OUTPUT
* or * * IMODE_NONE */
static int my_dev = 0;
static volatile int intr_active = 0;
static int sb16_dsp_open (int dev, int mode);
static void sb16_dsp_close (int dev);
static void sb16_dsp_output_block (int dev, unsigned long buf, int count, int intrflag, int dma_restart);
static void sb16_dsp_start_input (int dev, unsigned long buf, int count, int intrflag, int dma_restart);
static int sb16_dsp_ioctl (int dev, unsigned int cmd, unsigned int arg, int local);
static int sb16_dsp_prepare_for_input (int dev, int bsize, int bcount);
static int sb16_dsp_prepare_for_output (int dev, int bsize, int bcount);
static void sb16_dsp_reset (int dev);
static void sb16_dsp_halt (int dev);
static int dsp_set_speed (int);
static int dsp_set_stereo (int);
static void dsp_cleanup (void);
int sb_reset_dsp (void);
static struct audio_operations sb16_dsp_operations =
{
"SoundBlaster 16",
DMA_AUTOMODE,
AFMT_U8 | AFMT_S16_LE,
NULL,
sb16_dsp_open,
sb16_dsp_close,
sb16_dsp_output_block,
sb16_dsp_start_input,
sb16_dsp_ioctl,
sb16_dsp_prepare_for_input,
sb16_dsp_prepare_for_output,
sb16_dsp_reset,
sb16_dsp_halt,
NULL,
NULL
};
static int
sb_dsp_command01 (unsigned char val)
{
int i = 1 << 16;
while (--i & (!INB (DSP_STATUS) & 0x80));
if (!i)
printk ("SB16 sb_dsp_command01 Timeout\n");
return sb_dsp_command (val);
}
static int
dsp_set_speed (int mode)
{
DEB (printk ("dsp_set_speed(%d)\n", mode));
if (mode)
{
if (mode < 5000)
mode = 5000;
if (mode > 44100)
mode = 44100;
dsp_current_speed = mode;
}
return mode;
}
static int
dsp_set_stereo (int mode)
{
DEB (printk ("dsp_set_stereo(%d)\n", mode));
dsp_stereo = mode;
return mode;
}
static int
dsp_set_bits (int arg)
{
DEB (printk ("dsp_set_bits(%d)\n", arg));
if (arg)
switch (arg)
{
case 8:
dsp_16bit = 0;
break;
case 16:
dsp_16bit = 1;
break;
default:
dsp_16bit = 0;
}
return dsp_16bit ? 16 : 8;
}
static int
sb16_dsp_ioctl (int dev, unsigned int cmd, unsigned int arg, int local)
{
switch (cmd)
{
case SOUND_PCM_WRITE_RATE:
if (local)
return dsp_set_speed (arg);
return IOCTL_OUT (arg, dsp_set_speed (IOCTL_IN (arg)));
case SOUND_PCM_READ_RATE:
if (local)
return dsp_current_speed;
return IOCTL_OUT (arg, dsp_current_speed);
case SNDCTL_DSP_STEREO:
if (local)
return dsp_set_stereo (arg);
return IOCTL_OUT (arg, dsp_set_stereo (IOCTL_IN (arg)));
case SOUND_PCM_WRITE_CHANNELS:
if (local)
return dsp_set_stereo (arg - 1) + 1;
return IOCTL_OUT (arg, dsp_set_stereo (IOCTL_IN (arg) - 1) + 1);
case SOUND_PCM_READ_CHANNELS:
if (local)
return dsp_stereo + 1;
return IOCTL_OUT (arg, dsp_stereo + 1);
case SNDCTL_DSP_SETFMT:
if (local)
return dsp_set_bits (arg);
return IOCTL_OUT (arg, dsp_set_bits (IOCTL_IN (arg)));
case SOUND_PCM_READ_BITS:
if (local)
return dsp_16bit ? 16 : 8;
return IOCTL_OUT (arg, dsp_16bit ? 16 : 8);
case SOUND_PCM_WRITE_FILTER: /*
* NOT YET IMPLEMENTED
*/
if (IOCTL_IN (arg) > 1)
return IOCTL_OUT (arg, RET_ERROR (EINVAL));
default:
return RET_ERROR (EINVAL);
}
return RET_ERROR (EINVAL);
}
static int
sb16_dsp_open (int dev, int mode)
{
int retval;
DEB (printk ("sb16_dsp_open()\n"));
if (!sb16_dsp_ok)
{
printk ("SB16 Error: SoundBlaster board not installed\n");
return RET_ERROR (ENXIO);
}
if (intr_active)
return RET_ERROR (EBUSY);
retval = sb_get_irq ();
if (retval < 0)
return retval;
sb_reset_dsp ();
if (ALLOC_DMA_CHN (dma8))
{
printk ("SB16: Unable to grab DMA%d\n", dma8);
sb_free_irq ();
return RET_ERROR (EBUSY);
}
if (dma16 != dma8)
if (ALLOC_DMA_CHN (dma16))
{
printk ("SB16: Unable to grab DMA%d\n", dma16);
sb_free_irq ();
RELEASE_DMA_CHN (dma8);
return RET_ERROR (EBUSY);
}
irq_mode = IMODE_NONE;
dsp_busy = 1;
return 0;
}
static void
sb16_dsp_close (int dev)
{
unsigned long flags;
DEB (printk ("sb16_dsp_close()\n"));
sb_dsp_command01 (0xd9);
sb_dsp_command01 (0xd5);
DISABLE_INTR (flags);
RELEASE_DMA_CHN (dma8);
if (dma16 != dma8)
RELEASE_DMA_CHN (dma16);
sb_free_irq ();
dsp_cleanup ();
dsp_busy = 0;
RESTORE_INTR (flags);
}
static void
sb16_dsp_output_block (int dev, unsigned long buf, int count, int intrflag, int dma_restart)
{
unsigned long flags, cnt;
cnt = count;
if (dsp_16bit)
cnt >>= 1;
cnt--;
#ifdef DEB_DMARES
printk ("output_block: %x %d %d\n", buf, count, intrflag);
if (intrflag)
{
int pos, chan = audio_devs[dev]->dmachan;
DISABLE_INTR (flags);
clear_dma_ff (chan);
disable_dma (chan);
pos = get_dma_residue (chan);
enable_dma (chan);
RESTORE_INTR (flags);
printk ("dmapos=%d %x\n", pos, pos);
}
#endif
if (audio_devs[dev]->flags & DMA_AUTOMODE &&
intrflag &&
cnt == dsp_count)
{
irq_mode = IMODE_OUTPUT;
intr_active = 1;
return; /*
* Auto mode on. No need to react
*/
}
DISABLE_INTR (flags);
if (dma_restart)
{
sb16_dsp_halt (dev);
DMAbuf_start_dma (dev, buf, count, DMA_MODE_WRITE);
}
sb_dsp_command (0x41);
sb_dsp_command ((unsigned char) ((dsp_current_speed >> 8) & 0xff));
sb_dsp_command ((unsigned char) (dsp_current_speed & 0xff));
sb_dsp_command ((unsigned char) (dsp_16bit ? 0xb6 : 0xc6));
sb_dsp_command ((unsigned char) ((dsp_stereo ? 0x20 : 0) +
(dsp_16bit ? 0x10 : 0)));
sb_dsp_command01 ((unsigned char) (cnt & 0xff));
sb_dsp_command ((unsigned char) (cnt >> 8));
dsp_count = cnt;
irq_mode = IMODE_OUTPUT;
intr_active = 1;
RESTORE_INTR (flags);
}
static void
sb16_dsp_start_input (int dev, unsigned long buf, int count, int intrflag, int dma_restart)
{
unsigned long flags, cnt;
cnt = count;
if (dsp_16bit)
cnt >>= 1;
cnt--;
#ifdef DEB_DMARES
printk ("start_input: %x %d %d\n", buf, count, intrflag);
if (intrflag)
{
int pos, chan = audio_devs[dev]->dmachan;
DISABLE_INTR (flags);
clear_dma_ff (chan);
disable_dma (chan);
pos = get_dma_residue (chan);
enable_dma (chan);
RESTORE_INTR (flags);
printk ("dmapos=%d %x\n", pos, pos);
}
#endif
if (audio_devs[dev]->flags & DMA_AUTOMODE &&
intrflag &&
cnt == dsp_count)
{
irq_mode = IMODE_INPUT;
intr_active = 1;
return; /*
* Auto mode on. No need to react
*/
}
DISABLE_INTR (flags);
if (dma_restart)
{
sb_reset_dsp ();
DMAbuf_start_dma (dev, buf, count, DMA_MODE_READ);
}
sb_dsp_command (0x42);
sb_dsp_command ((unsigned char) ((dsp_current_speed >> 8) & 0xff));
sb_dsp_command ((unsigned char) (dsp_current_speed & 0xff));
sb_dsp_command ((unsigned char) (dsp_16bit ? 0xbe : 0xce));
sb_dsp_command ((unsigned char) ((dsp_stereo ? 0x20 : 0) +
(dsp_16bit ? 0x10 : 0)));
sb_dsp_command01 ((unsigned char) (cnt & 0xff));
sb_dsp_command ((unsigned char) (cnt >> 8));
dsp_count = cnt;
irq_mode = IMODE_INPUT;
intr_active = 1;
RESTORE_INTR (flags);
}
static int
sb16_dsp_prepare_for_input (int dev, int bsize, int bcount)
{
audio_devs[my_dev]->dmachan = dsp_16bit ? dma16 : dma8;
dsp_count = 0;
dsp_cleanup ();
return 0;
}
static int
sb16_dsp_prepare_for_output (int dev, int bsize, int bcount)
{
audio_devs[my_dev]->dmachan = dsp_16bit ? dma16 : dma8;
dsp_count = 0;
dsp_cleanup ();
return 0;
}
static void
dsp_cleanup (void)
{
irq_mode = IMODE_NONE;
intr_active = 0;
}
static void
sb16_dsp_reset (int dev)
{
unsigned long flags;
DISABLE_INTR (flags);
sb_reset_dsp ();
dsp_cleanup ();
RESTORE_INTR (flags);
}
static void
sb16_dsp_halt (int dev)
{
if (dsp_16bit)
{
sb_dsp_command01 (0xd9);
sb_dsp_command01 (0xd5);
}
else
{
sb_dsp_command01 (0xda);
sb_dsp_command01 (0xd0);
}
}
static void
set_irq_hw (int level)
{
int ival;
switch (level)
{
case 5:
ival = 2;
break;
case 7:
ival = 4;
break;
case 9:
ival = 1;
break;
case 10:
ival = 8;
break;
default:
printk ("SB16_IRQ_LEVEL %d does not exist\n", level);
return;
}
sb_setmixer (IRQ_NR, ival);
}
long
sb16_dsp_init (long mem_start, struct address_info *hw_config)
{
extern int sbc_major, sbc_minor;
if (sbc_major < 4)
return mem_start; /* Not a SB16 */
#ifndef SCO
sprintf (sb16_dsp_operations.name, "SoundBlaster 16 %d.%d", sbc_major, sbc_minor);
#endif
#ifdef __FreeBSD__
printk ("sbxvi0: <%s>", sb16_dsp_operations.name);
#else
printk (" <%s>", sb16_dsp_operations.name);
#endif
if (num_audiodevs < MAX_AUDIO_DEV)
{
audio_devs[my_dev = num_audiodevs++] = &sb16_dsp_operations;
audio_devs[my_dev]->dmachan = hw_config->dma;
#ifndef NO_AUTODMA
audio_devs[my_dev]->buffcount = 1;
#else
audio_devs[my_dev]->flags &= ~DMA_AUTOMODE;
audio_devs[my_dev]->buffcount = DSP_BUFFCOUNT;
#endif
audio_devs[my_dev]->buffsize = DSP_BUFFSIZE;
}
else
printk ("SB: Too many DSP devices available\n");
sb16_dsp_ok = 1;
return mem_start;
}
int
sb16_dsp_detect (struct address_info *hw_config)
{
struct address_info *sb_config;
extern int sbc_major;
if (sb16_dsp_ok)
return 1; /* Can't drive two cards */
if (!(sb_config = sound_getconf (SNDCARD_SB)))
{
printk ("SB16 Error: Plain SB not configured\n");
return 0;
}
/*
* sb_setmixer(OPSW,0xf); if(sb_getmixer(OPSW)!=0xf) return 0;
*/
if (!sb_reset_dsp ())
return 0;
if (sbc_major < 4) /* Set by the plain SB driver */
return 0; /* Not a SB16 */
if (hw_config->dma < 4)
if (hw_config->dma != sb_config->dma)
{
printk ("SB16 Error: Invalid DMA channel %d/%d\n",
sb_config->dma, hw_config->dma);
return 0;
}
dma16 = hw_config->dma;
dma8 = sb_config->dma;
set_irq_hw (sb_config->irq);
sb_setmixer (DMA_NR, (1 << hw_config->dma) | (1 << sb_config->dma));
DEB (printk ("SoundBlaster 16: IRQ %d DMA %d OK\n", sb_config->irq, hw_config->dma));
/*
* dsp_showmessage(0xe3,99);
*/
sb16_dsp_ok = 1;
return 1;
}
void
sb16_dsp_interrupt (int unused)
{
int data;
data = INB (DSP_DATA_AVL16); /*
* Interrupt acknowledge
*/
if (intr_active)
switch (irq_mode)
{
case IMODE_OUTPUT:
intr_active = 0;
DMAbuf_outputintr (my_dev, 1);
break;
case IMODE_INPUT:
intr_active = 0;
DMAbuf_inputintr (my_dev);
break;
default:
printk ("SoundBlaster: Unexpected interrupt\n");
}
}
#endif