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freebsd/sys/i386/isa/sound/sb_dsp.c
Jordan K. Hubbard 3dc9f2bb59 Rename sb.h to sb_defs.h and pas.h to pas_defs.h so there's no 
possibility of conflict with the versions in the compile dir.
1996-11-15 08:30:39 +00:00

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/*
* sound/sb_dsp.c
*
* The low level driver for the SoundBlaster DSP chip (SB1.0 to 2.1, SB Pro).
*
* Copyright by Hannu Savolainen 1994
*
* 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.
*
* Modified:
* Hunyue Yau Jan 6 1994
* Added code to support Sound Galaxy NX Pro
*
* JRA Gibson April 1995
* Code added for MV ProSonic/Jazz 16 in 16 bit mode
*/
#include <i386/isa/sound/sound_config.h>
#if defined(CONFIGURE_SOUNDCARD) && !defined(EXCLUDE_SB)
#include <i386/isa/sound/sb_defs.h>
#include <i386/isa/sound/sb_mixer.h>
#undef SB_TEST_IRQ
int sbc_base = 0;
static int sbc_irq = 0;
static int open_mode = 0; /* Read, write or both */
int Jazz16_detected = 0;
/*
* The DSP channel can be used either for input or output. Variable
* 'sb_irq_mode' will be set when the program calls read or write first time
* after open. Current version doesn't support mode changes without closing
* and reopening the device. Support for this feature may be implemented in a
* future version of this driver.
*/
int sb_dsp_ok = 0; /*
* * * * Set to 1 after successful
* initialization * */
static int midi_disabled = 0;
int sb_dsp_highspeed = 0;
int sbc_major = 1, sbc_minor = 0; /*
* * * * DSP version */
static int dsp_stereo = 0;
static int dsp_current_speed = DSP_DEFAULT_SPEED;
static int sb16 = 0;
static int irq_verified = 0;
int sb_midi_mode = NORMAL_MIDI;
int sb_midi_busy = 0; /*
* * * * 1 if the process has output
* to * * MIDI */
int sb_dsp_busy = 0;
volatile int sb_irq_mode = IMODE_NONE; /*
* * * * IMODE_INPUT, *
* IMODE_OUTPUT * * or *
* IMODE_NONE */
static volatile int irq_ok = 0;
#ifdef JAZZ16
/* 16 bit support
*/
static int dsp_16bit = 0;
static int dma8 = 1;
static int dma16 = 5;
static int dsp_set_bits (int arg);
static int initialize_ProSonic16 (void);
/* end of 16 bit support
*/
#endif
int sb_duplex_midi = 0;
static int my_dev = 0;
volatile int sb_intr_active = 0;
static int dsp_speed (int);
static int dsp_set_stereo (int mode);
#if !defined(EXCLUDE_MIDI) || !defined(EXCLUDE_AUDIO)
/*
* Common code for the midi and pcm functions
*/
int
sb_dsp_command (unsigned char val)
{
int i;
unsigned long limit;
limit = GET_TIME () + HZ / 10; /*
* The timeout is 0.1 secods
*/
/*
* Note! the i<500000 is an emergency exit. The sb_dsp_command() is sometimes
* called while interrupts are disabled. This means that the timer is
* disabled also. However the timeout situation is a abnormal condition.
* Normally the DSP should be ready to accept commands after just couple of
* loops.
*/
for (i = 0; i < 500000 && GET_TIME () < limit; i++)
{
if ((INB (DSP_STATUS) & 0x80) == 0)
{
OUTB (val, DSP_COMMAND);
return 1;
}
}
printk ("SoundBlaster: DSP Command(%x) Timeout.\n", val);
printk ("IRQ conflict???\n");
return 0;
}
void
sbintr (INT_HANDLER_PARMS (irq, dummy))
{
int status;
#ifndef EXCLUDE_SBPRO
if (sb16)
{
unsigned char src = sb_getmixer (IRQ_STAT); /* Interrupt source register */
#ifndef EXCLUDE_SB16
if (src & 3)
sb16_dsp_interrupt (irq);
#ifndef EXCLUDE_MIDI
if (src & 4)
sb16midiintr (irq); /*
* SB MPU401 interrupt
*/
#endif
#endif
if (!(src & 1))
return; /*
* Not a DSP interupt
*/
}
#endif
status = INB (DSP_DATA_AVAIL); /*
* Clear interrupt
*/
if (sb_intr_active)
switch (sb_irq_mode)
{
case IMODE_OUTPUT:
sb_intr_active = 0;
DMAbuf_outputintr (my_dev, 1);
break;
case IMODE_INPUT:
sb_intr_active = 0;
DMAbuf_inputintr (my_dev);
/*
* A complete buffer has been input. Let's start new one
*/
break;
case IMODE_INIT:
sb_intr_active = 0;
irq_ok = 1;
break;
case IMODE_MIDI:
#ifndef EXCLUDE_MIDI
sb_midi_interrupt (irq);
#endif
break;
default:
printk ("SoundBlaster: Unexpected interrupt\n");
}
}
static int sb_irq_usecount = 0;
int
sb_get_irq (void)
{
int ok;
if (!sb_irq_usecount)
if ((ok = snd_set_irq_handler (sbc_irq, sbintr, "SoundBlaster")) < 0)
return ok;
sb_irq_usecount++;
return 0;
}
void
sb_free_irq (void)
{
if (!sb_irq_usecount)
return;
sb_irq_usecount--;
if (!sb_irq_usecount)
snd_release_irq (sbc_irq);
}
int
sb_reset_dsp (void)
{
int loopc;
OUTB (1, DSP_RESET);
tenmicrosec ();
OUTB (0, DSP_RESET);
tenmicrosec ();
tenmicrosec ();
tenmicrosec ();
for (loopc = 0; loopc < 1000 && !(INB (DSP_DATA_AVAIL) & 0x80); loopc++); /*
* Wait
* for
* data
* *
* available
* status
*/
if (INB (DSP_READ) != 0xAA)
return 0; /*
* Sorry
*/
return 1;
}
#endif
#ifndef EXCLUDE_AUDIO
static void
dsp_speaker (char state)
{
if (state)
sb_dsp_command (DSP_CMD_SPKON);
else
sb_dsp_command (DSP_CMD_SPKOFF);
}
static int
dsp_speed (int speed)
{
unsigned char tconst;
unsigned long flags;
int max_speed = 44100;
if (speed < 4000)
speed = 4000;
/*
* Older SB models don't support higher speeds than 22050.
*/
if (sbc_major < 2 ||
(sbc_major == 2 && sbc_minor == 0))
max_speed = 22050;
/*
* SB models earlier than SB Pro have low limit for the input speed.
*/
if (open_mode != OPEN_WRITE) /* Recording is possible */
if (sbc_major < 3) /* Limited input speed with these cards */
if (sbc_major == 2 && sbc_minor > 0)
max_speed = 15000;
else
max_speed = 13000;
if (speed > max_speed)
speed = max_speed; /*
* Invalid speed
*/
/* Logitech SoundMan Games and Jazz16 cards can support 44.1kHz stereo */
#if !defined (SM_GAMES)
/*
* Max. stereo speed is 22050
*/
if (dsp_stereo && speed > 22050 && Jazz16_detected == 0)
speed = 22050;
#endif
if ((speed > 22050) && sb_midi_busy)
{
printk ("SB Warning: High speed DSP not possible simultaneously with MIDI output\n");
speed = 22050;
}
if (dsp_stereo)
speed *= 2;
/*
* Now the speed should be valid
*/
if (speed > 22050)
{ /*
* High speed mode
*/
int tmp;
tconst = (unsigned char) ((65536 -
((256000000 + speed / 2) / speed)) >> 8);
sb_dsp_highspeed = 1;
DISABLE_INTR (flags);
if (sb_dsp_command (0x40))
sb_dsp_command (tconst);
RESTORE_INTR (flags);
tmp = 65536 - (tconst << 8);
speed = (256000000 + tmp / 2) / tmp;
}
else
{
int tmp;
sb_dsp_highspeed = 0;
tconst = (256 - ((1000000 + speed / 2) / speed)) & 0xff;
DISABLE_INTR (flags);
if (sb_dsp_command (0x40)) /*
* Set time constant
*/
sb_dsp_command (tconst);
RESTORE_INTR (flags);
tmp = 256 - tconst;
speed = (1000000 + tmp / 2) / tmp;
}
if (dsp_stereo)
speed /= 2;
dsp_current_speed = speed;
return speed;
}
static int
dsp_set_stereo (int mode)
{
dsp_stereo = 0;
#ifdef EXCLUDE_SBPRO
return 0;
#else
if (sbc_major < 3 || sb16)
return 0; /*
* Sorry no stereo
*/
if (mode && sb_midi_busy)
{
printk ("SB Warning: Stereo DSP not possible simultaneously with MIDI output\n");
return 0;
}
dsp_stereo = !!mode;
return dsp_stereo;
#endif
}
static void
sb_dsp_output_block (int dev, unsigned long buf, int count,
int intrflag, int restart_dma)
{
unsigned long flags;
if (!sb_irq_mode)
dsp_speaker (ON);
sb_irq_mode = IMODE_OUTPUT;
DMAbuf_start_dma (dev, buf, count, DMA_MODE_WRITE);
if (audio_devs[dev]->dmachan > 3)
count >>= 1;
count--;
if (sb_dsp_highspeed)
{
DISABLE_INTR (flags);
if (sb_dsp_command (0x48)) /*
* High speed size
*/
{
sb_dsp_command ((unsigned char) (count & 0xff));
sb_dsp_command ((unsigned char) ((count >> 8) & 0xff));
sb_dsp_command (0x91); /*
* High speed 8 bit DAC
*/
}
else
printk ("SB Error: Unable to start (high speed) DAC\n");
RESTORE_INTR (flags);
}
else
{
DISABLE_INTR (flags);
if (sb_dsp_command (0x14)) /*
* 8-bit DAC (DMA)
*/
{
sb_dsp_command ((unsigned char) (count & 0xff));
sb_dsp_command ((unsigned char) ((count >> 8) & 0xff));
}
else
printk ("SB Error: Unable to start DAC\n");
RESTORE_INTR (flags);
}
sb_intr_active = 1;
}
static void
sb_dsp_start_input (int dev, unsigned long buf, int count, int intrflag,
int restart_dma)
{
/*
* Start a DMA input to the buffer pointed by dmaqtail
*/
unsigned long flags;
if (!sb_irq_mode)
dsp_speaker (OFF);
sb_irq_mode = IMODE_INPUT;
DMAbuf_start_dma (dev, buf, count, DMA_MODE_READ);
if (audio_devs[dev]->dmachan > 3)
count >>= 1;
count--;
if (sb_dsp_highspeed)
{
DISABLE_INTR (flags);
if (sb_dsp_command (0x48)) /*
* High speed size
*/
{
sb_dsp_command ((unsigned char) (count & 0xff));
sb_dsp_command ((unsigned char) ((count >> 8) & 0xff));
sb_dsp_command (0x99); /*
* High speed 8 bit ADC
*/
}
else
printk ("SB Error: Unable to start (high speed) ADC\n");
RESTORE_INTR (flags);
}
else
{
DISABLE_INTR (flags);
if (sb_dsp_command (0x24)) /*
* 8-bit ADC (DMA)
*/
{
sb_dsp_command ((unsigned char) (count & 0xff));
sb_dsp_command ((unsigned char) ((count >> 8) & 0xff));
}
else
printk ("SB Error: Unable to start ADC\n");
RESTORE_INTR (flags);
}
sb_intr_active = 1;
}
static void
dsp_cleanup (void)
{
sb_intr_active = 0;
}
static int
sb_dsp_prepare_for_input (int dev, int bsize, int bcount)
{
dsp_cleanup ();
dsp_speaker (OFF);
if (sbc_major == 3) /*
* SB Pro
*/
{
#ifdef JAZZ16
/* Select correct dma channel
* for 16/8 bit acccess
*/
audio_devs[my_dev]->dmachan = dsp_16bit ? dma16 : dma8;
if (dsp_stereo)
sb_dsp_command (dsp_16bit ? 0xac : 0xa8);
else
sb_dsp_command (dsp_16bit ? 0xa4 : 0xa0);
#else
/* 8 bit only cards use this
*/
if (dsp_stereo)
sb_dsp_command (0xa8);
else
sb_dsp_command (0xa0);
#endif
dsp_speed (dsp_current_speed); /*
* Speed must be recalculated if
* #channels * changes
*/
}
return 0;
}
static int
sb_dsp_prepare_for_output (int dev, int bsize, int bcount)
{
dsp_cleanup ();
dsp_speaker (ON);
#ifndef EXCLUDE_SBPRO
if (sbc_major == 3) /*
* SB Pro
*/
{
#ifdef JAZZ16
/* 16 bit specific instructions
*/
audio_devs[my_dev]->dmachan = dsp_16bit ? dma16 : dma8;
if (Jazz16_detected != 2) /* SM Wave */
sb_mixer_set_stereo (dsp_stereo);
if (dsp_stereo)
sb_dsp_command (dsp_16bit ? 0xac : 0xa8);
else
sb_dsp_command (dsp_16bit ? 0xa4 : 0xa0);
#else
sb_mixer_set_stereo (dsp_stereo);
#endif
dsp_speed (dsp_current_speed); /*
* Speed must be recalculated if
* #channels * changes
*/
}
#endif
return 0;
}
static void
sb_dsp_halt_xfer (int dev)
{
}
static int
verify_irq (void)
{
#if 0
DEFINE_WAIT_QUEUE (testq, testf);
irq_ok = 0;
if (sb_get_irq () == -1)
{
printk ("*** SB Error: Irq %d already in use\n", sbc_irq);
return 0;
}
sb_irq_mode = IMODE_INIT;
sb_dsp_command (0xf2); /*
* This should cause immediate interrupt
*/
DO_SLEEP (testq, testf, HZ / 5);
sb_free_irq ();
if (!irq_ok)
{
printk ("SB Warning: IRQ%d test not passed!", sbc_irq);
irq_ok = 1;
}
#else
irq_ok = 1;
#endif
return irq_ok;
}
static int
sb_dsp_open (int dev, int mode)
{
int retval;
if (!sb_dsp_ok)
{
printk ("SB Error: SoundBlaster board not installed\n");
return RET_ERROR (ENXIO);
}
if (sb_intr_active || (sb_midi_busy && sb_midi_mode == UART_MIDI))
{
printk ("SB: PCM not possible during MIDI input\n");
return RET_ERROR (EBUSY);
}
if (!irq_verified)
{
verify_irq ();
irq_verified = 1;
}
else if (!irq_ok)
printk ("SB Warning: Incorrect IRQ setting %d\n",
sbc_irq);
retval = sb_get_irq ();
if (retval)
return retval;
/* Allocate 8 bit dma
*/
if (DMAbuf_open_dma (dev) < 0)
{
sb_free_irq ();
printk ("SB: DMA Busy\n");
return RET_ERROR (EBUSY);
}
#ifdef JAZZ16
/* Allocate 16 bit dma
*/
if (Jazz16_detected != 0)
if (dma16 != dma8)
{
if (ALLOC_DMA_CHN (dma16, "Jazz16 16 bit"))
{
sb_free_irq ();
RELEASE_DMA_CHN (dma8);
return RET_ERROR (EBUSY);
}
}
#endif
sb_irq_mode = IMODE_NONE;
sb_dsp_busy = 1;
open_mode = mode;
return 0;
}
static void
sb_dsp_close (int dev)
{
#ifdef JAZZ16
/* Release 16 bit dma channel
*/
if (Jazz16_detected)
RELEASE_DMA_CHN (dma16);
#endif
DMAbuf_close_dma (dev);
sb_free_irq ();
dsp_cleanup ();
dsp_speaker (OFF);
sb_dsp_busy = 0;
sb_dsp_highspeed = 0;
open_mode = 0;
}
#ifdef JAZZ16
/* Function dsp_set_bits() only required for 16 bit cards
*/
static int
dsp_set_bits (int arg)
{
if (arg)
if (Jazz16_detected == 0)
dsp_16bit = 0;
else
switch (arg)
{
case 8:
dsp_16bit = 0;
break;
case 16:
dsp_16bit = 1;
break;
default:
dsp_16bit = 0;
}
return dsp_16bit ? 16 : 8;
}
#endif /* ifdef JAZZ16 */
static int
sb_dsp_ioctl (int dev, unsigned int cmd, unsigned int arg, int local)
{
switch (cmd)
{
case SOUND_PCM_WRITE_RATE:
if (local)
return dsp_speed (arg);
return IOCTL_OUT (arg, dsp_speed (IOCTL_IN (arg)));
break;
case SOUND_PCM_READ_RATE:
if (local)
return dsp_current_speed;
return IOCTL_OUT (arg, dsp_current_speed);
break;
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);
break;
case SOUND_PCM_READ_CHANNELS:
if (local)
return dsp_stereo + 1;
return IOCTL_OUT (arg, dsp_stereo + 1);
break;
case SNDCTL_DSP_STEREO:
if (local)
return dsp_set_stereo (arg);
return IOCTL_OUT (arg, dsp_set_stereo (IOCTL_IN (arg)));
break;
#ifdef JAZZ16
/* Word size specific cases here.
* SNDCTL_DSP_SETFMT=SOUND_PCM_WRITE_BITS
*/
case SNDCTL_DSP_SETFMT:
if (local)
return dsp_set_bits (arg);
return IOCTL_OUT (arg, dsp_set_bits (IOCTL_IN (arg)));
break;
case SOUND_PCM_READ_BITS:
if (local)
return dsp_16bit ? 16 : 8;
return IOCTL_OUT (arg, dsp_16bit ? 16 : 8);
break;
#else
case SOUND_PCM_WRITE_BITS:
case SOUND_PCM_READ_BITS:
if (local)
return 8;
return IOCTL_OUT (arg, 8); /*
* Only 8 bits/sample supported
*/
break;
#endif /* ifdef JAZZ16 */
case SOUND_PCM_WRITE_FILTER:
case SOUND_PCM_READ_FILTER:
return RET_ERROR (EINVAL);
break;
default:
return RET_ERROR (EINVAL);
}
return RET_ERROR (EINVAL);
}
static void
sb_dsp_reset (int dev)
{
unsigned long flags;
DISABLE_INTR (flags);
sb_reset_dsp ();
dsp_speed (dsp_current_speed);
dsp_cleanup ();
RESTORE_INTR (flags);
}
#endif
#ifdef JAZZ16
/*
* Initialization of a Media Vision ProSonic 16 Soundcard.
* The function initializes a ProSonic 16 like PROS.EXE does for DOS. It sets
* the base address, the DMA-channels, interrupts and enables the joystickport.
*
* Also used by Jazz 16 (same card, different name)
*
* written 1994 by Rainer Vranken
* E-Mail: rvranken@polaris.informatik.uni-essen.de
*/
#ifndef MPU_BASE /* take default values if not specified */
#define MPU_BASE 0x330
#endif
#ifndef MPU_IRQ
#define MPU_IRQ 9
#endif
unsigned int
get_sb_byte (void)
{
int i;
for (i = 1000; i; i--)
if (INB (DSP_DATA_AVAIL) & 0x80)
{
return INB (DSP_READ);
}
return 0xffff;
}
#ifdef SM_WAVE
/*
* Logitech Soundman Wave detection and initialization by Hannu Savolainen.
*
* There is a microcontroller (8031) in the SM Wave card for MIDI emulation.
* it's located at address MPU_BASE+4. MPU_BASE+7 is a SM Wave specific
* control register for MC reset, SCSI, OPL4 and DSP (future expansion)
* address decoding. Otherwise the SM Wave is just a ordinary MV Jazz16
* based soundcard.
*/
static void
smw_putmem (int base, int addr, unsigned char val)
{
unsigned long flags;
DISABLE_INTR (flags);
OUTB (addr & 0xff, base + 1); /* Low address bits */
OUTB (addr >> 8, base + 2); /* High address bits */
OUTB (val, base); /* Data */
RESTORE_INTR (flags);
}
static unsigned char
smw_getmem (int base, int addr)
{
unsigned long flags;
unsigned char val;
DISABLE_INTR (flags);
OUTB (addr & 0xff, base + 1); /* Low address bits */
OUTB (addr >> 8, base + 2); /* High address bits */
val = INB (base); /* Data */
RESTORE_INTR (flags);
return val;
}
static int
initialize_smw (void)
{
#ifdef SMW_MIDI0001_INCLUDED
#include <i386/isa/sound/smw-midi0001.h>
#else
unsigned char smw_ucode[1];
int smw_ucodeLen = 0;
#endif
int mp_base = MPU_BASE + 4; /* Microcontroller base */
int i;
unsigned char control;
/*
* Reset the microcontroller so that the RAM can be accessed
*/
control = INB (MPU_BASE + 7);
OUTB (control | 3, MPU_BASE + 7); /* Set last two bits to 1 (?) */
OUTB ((control & 0xfe) | 2, MPU_BASE + 7); /* xxxxxxx0 resets the mc */
for (i = 0; i < 300; i++) /* Wait at least 1ms */
tenmicrosec ();
OUTB (control & 0xfc, MPU_BASE + 7); /* xxxxxx00 enables RAM */
/*
* Detect microcontroller by probing the 8k RAM area
*/
smw_putmem (mp_base, 0, 0x00);
smw_putmem (mp_base, 1, 0xff);
tenmicrosec ();
if (smw_getmem (mp_base, 0) != 0x00 || smw_getmem (mp_base, 1) != 0xff)
{
printk ("\nSM Wave: No microcontroller RAM detected (%02x, %02x)\n",
smw_getmem (mp_base, 0), smw_getmem (mp_base, 1));
return 0; /* No RAM */
}
/*
* There is RAM so assume it's really a SM Wave
*/
#ifdef SMW_MIDI0001_INCLUDED
if (smw_ucodeLen != 8192)
{
printk ("\nSM Wave: Invalid microcode (MIDI0001.BIN) length\n");
return 1;
}
#endif
/*
* Download microcode
*/
for (i = 0; i < 8192; i++)
smw_putmem (mp_base, i, smw_ucode[i]);
/*
* Verify microcode
*/
for (i = 0; i < 8192; i++)
if (smw_getmem (mp_base, i) != smw_ucode[i])
{
printk ("SM Wave: Microcode verification failed\n");
return 0;
}
control = 0;
#ifdef SMW_SCSI_IRQ
/*
* Set the SCSI interrupt (IRQ2/9, IRQ3 or IRQ10). The SCSI interrupt
* is disabled by default.
*
* Btw the Zilog 5380 SCSI controller is located at MPU base + 0x10.
*/
{
static unsigned char scsi_irq_bits[] =
{0, 0, 3, 1, 0, 0, 0, 0, 0, 3, 2, 0, 0, 0, 0, 0};
control |= scsi_irq_bits[SMW_SCSI_IRQ] << 6;
}
#endif
#ifdef SMW_OPL4_ENABLE
/*
* Make the OPL4 chip visible on the PC bus at 0x380.
*
* There is no need to enable this feature since VoxWare
* doesn't support OPL4 yet. Also there is no RAM in SM Wave so
* enabling OPL4 is pretty useless.
*/
control |= 0x10; /* Uses IRQ12 if bit 0x20 == 0 */
/* control |= 0x20; Uncomment this if you want to use IRQ7 */
#endif
OUTB (control | 0x03, MPU_BASE + 7); /* xxxxxx11 restarts */
return 1;
}
#endif
static int
initialize_ProSonic16 (void)
{
int x;
static unsigned char int_translat[16] =
{0, 0, 2, 3, 0, 1, 0, 4, 0, 2, 5, 0, 0, 0, 0, 6}, dma_translat[8] =
{0, 1, 0, 2, 0, 3, 0, 4};
OUTB (0xAF, 0x201); /* ProSonic/Jazz16 wakeup */
for (x = 0; x < 1000; ++x) /* wait 10 milliseconds */
tenmicrosec ();
OUTB (0x50, 0x201);
OUTB ((sbc_base & 0x70) | ((MPU_BASE & 0x30) >> 4), 0x201);
if (sb_reset_dsp ())
{ /* OK. We have at least a SB */
/* Check the version number of ProSonic (I guess) */
if (!sb_dsp_command (0xFA))
return 1;
if (get_sb_byte () != 0x12)
return 1;
if (sb_dsp_command (0xFB) && /* set DMA-channels and Interrupts */
sb_dsp_command ((dma_translat[JAZZ_DMA16] << 4) | dma_translat[SBC_DMA]) &&
sb_dsp_command ((int_translat[MPU_IRQ] << 4) | int_translat[sbc_irq]))
{
Jazz16_detected = 1;
#ifdef SM_WAVE
if (initialize_smw ())
Jazz16_detected = 2;
#endif
sb_dsp_disable_midi ();
}
return 1; /* There was at least a SB */
}
return 0; /* No SB or ProSonic16 detected */
}
#endif /* ifdef JAZZ16 */
int
sb_dsp_detect (struct address_info *hw_config)
{
sbc_base = hw_config->io_base;
sbc_irq = hw_config->irq;
if (sb_dsp_ok)
return 0; /*
* Already initialized
*/
#ifdef JAZZ16
dma8 = hw_config->dma;
dma16 = JAZZ_DMA16;
if (!initialize_ProSonic16 ())
return 0;
#else
if (!sb_reset_dsp ())
return 0;
#endif
#ifdef PC98
switch (sbc_irq)
{
case 3:
sb_setmixer (IRQ_NR, 1);
break;
case 5:
sb_setmixer (IRQ_NR, 8);
break;
case 10:
sb_setmixer (IRQ_NR, 2);
break;
}
switch (hw_config->dma)
{
case 0:
sb_setmixer (DMA_NR, 1);
break;
case 3:
sb_setmixer (DMA_NR, 2);
break;
}
#endif
return 1; /*
* Detected
*/
}
#ifndef EXCLUDE_AUDIO
static struct audio_operations sb_dsp_operations =
{
"SoundBlaster",
NOTHING_SPECIAL,
AFMT_U8, /* Just 8 bits. Poor old SB */
NULL,
sb_dsp_open,
sb_dsp_close,
sb_dsp_output_block,
sb_dsp_start_input,
sb_dsp_ioctl,
sb_dsp_prepare_for_input,
sb_dsp_prepare_for_output,
sb_dsp_reset,
sb_dsp_halt_xfer,
NULL, /* local_qlen */
NULL /* copy_from_user */
};
#endif
long
sb_dsp_init (long mem_start, struct address_info *hw_config)
{
int i;
int mixer_type = 0;
sbc_major = sbc_minor = 0;
sb_dsp_command (0xe1); /*
* Get version
*/
for (i = 1000; i; i--)
{
if (INB (DSP_DATA_AVAIL) & 0x80)
{ /*
* wait for Data Ready
*/
if (sbc_major == 0)
sbc_major = INB (DSP_READ);
else
{
sbc_minor = INB (DSP_READ);
break;
}
}
}
if (sbc_major == 2 || sbc_major == 3)
sb_duplex_midi = 1;
if (sbc_major == 4)
sb16 = 1;
#ifndef EXCLUDE_SBPRO
if (sbc_major >= 3)
mixer_type = sb_mixer_init (sbc_major);
#else
if (sbc_major >= 3)
printk ("\n\n\n\nNOTE! SB Pro support is required with your soundcard!\n\n\n");
#endif
#ifndef EXCLUDE_YM3812
#ifdef PC98
if (sbc_major > 3 ||
(sbc_major == 3 && INB (0x28d2) == 0x00))
#else
if (sbc_major > 3 ||
(sbc_major == 3 && INB (0x388) == 0x00)) /* Should be 0x06 if not OPL-3 */
#endif
enable_opl3_mode (OPL3_LEFT, OPL3_RIGHT, OPL3_BOTH);
#endif
#ifndef EXCLUDE_AUDIO
if (sbc_major >= 3)
{
if (Jazz16_detected)
{
if (Jazz16_detected == 2)
sprintf (sb_dsp_operations.name, "SoundMan Wave %d.%d", sbc_major, sbc_minor);
else
sprintf (sb_dsp_operations.name, "MV Jazz16 %d.%d", sbc_major, sbc_minor);
sb_dsp_operations.format_mask |= AFMT_S16_LE; /* Hurrah, 16 bits */
}
else
#ifdef __SGNXPRO__
if (mixer_type == 2)
{
sprintf (sb_dsp_operations.name, "Sound Galaxy NX Pro %d.%d", sbc_major, sbc_minor);
}
else
#endif
if (sbc_major == 4)
{
sprintf (sb_dsp_operations.name, "SoundBlaster 16 %d.%d", sbc_major, sbc_minor);
}
else
{
sprintf (sb_dsp_operations.name, "SoundBlaster Pro %d.%d", sbc_major, sbc_minor);
}
}
else
{
sprintf (sb_dsp_operations.name, "SoundBlaster %d.%d", sbc_major, sbc_minor);
}
#if defined(__FreeBSD__)
printk ("sb0: <%s>", sb_dsp_operations.name);
#else
printk (" <%s>", sb_dsp_operations.name);
#endif
#if !defined(EXCLUDE_SB16) && !defined(EXCLUDE_SBPRO)
if (!sb16) /*
* There is a better driver for SB16
*/
#endif
if (num_audiodevs < MAX_AUDIO_DEV)
{
audio_devs[my_dev = num_audiodevs++] = &sb_dsp_operations;
audio_devs[my_dev]->buffcount = DSP_BUFFCOUNT;
audio_devs[my_dev]->buffsize = (
(sbc_major > 2 || sbc_major == 2 && sbc_minor > 0) ?
16 : 8) * 1024;
audio_devs[my_dev]->dmachan = hw_config->dma;
}
else
printk ("SB: Too many DSP devices available\n");
#else
printk (" <SoundBlaster (configured without audio support)>");
#endif
#ifndef EXCLUDE_MIDI
if (!midi_disabled && !sb16) /*
* Midi don't work in the SB emulation mode *
* of PAS, SB16 has better midi interface
*/
sb_midi_init (sbc_major);
#endif
sb_dsp_ok = 1;
return mem_start;
}
void
sb_dsp_disable_midi (void)
{
midi_disabled = 1;
}
#endif
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