ae28ee13b4
Amancio. There is some SoundSource support here that is primitive and probably doesn't work, but I'll let the two submitters let me know how my integration of that was since I don't have this card to test. I've only tested this on my GUS MAX since it's all I have. This all probably needs to be re-done anyway since we're widely variant from the original VOXWARE source in the current layout. Submitted by: Amancio Hasty and Jim Lowe Obtained from: Hannu Savolainen
572 lines
13 KiB
C
572 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.
|
|
*
|
|
*/
|
|
|
|
#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, "SB16 (8bit)"))
|
|
{
|
|
printk ("SB16: Unable to grab DMA%d\n", dma8);
|
|
sb_free_irq ();
|
|
return RET_ERROR (EBUSY);
|
|
}
|
|
|
|
if (dma16 != dma8)
|
|
if (ALLOC_DMA_CHN (dma16, "SB16 (16bit)"))
|
|
{
|
|
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);
|
|
}
|
|
DMAbuf_reset_dma (dev);
|
|
}
|
|
|
|
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 */
|
|
|
|
sprintf (sb16_dsp_operations.name, "SoundBlaster 16 %d.%d", sbc_major, sbc_minor);
|
|
|
|
#if defined(__FreeBSD__)
|
|
printk ("sbxvo0: <%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;
|
|
audio_devs[my_dev]->buffcount = 1;
|
|
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
|