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/*
* sound/gus_card.c
*
* Detection routine for the Gravis Ultrasound.
*
* Copyright by Hannu Savolainen 1993
*
* 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.
*
*/
#include "sound_config.h"
#if defined(CONFIGURE_SOUNDCARD) && !defined(EXCLUDE_GUS)
#include "gus_hw.h"
int gus_base, gus_irq, gus_dma;
extern int gus_wave_volume;
extern int gus_pcm_volume;
extern int have_gus_max;
long
attach_gus_card (long mem_start, struct address_info *hw_config)
{
int io_addr;
snd_set_irq_handler (hw_config->irq, gusintr, "Gravis Ultrasound");
if (gus_wave_detect (hw_config->io_base)) /*
* Try first the default
*/
{
mem_start = gus_wave_init (mem_start, hw_config->irq, hw_config->dma,
hw_config->dma_read);
#ifndef EXCLUDE_MIDI
mem_start = gus_midi_init (mem_start);
#endif
#ifndef EXCLUDE_SEQUENCER
sound_timer_init (hw_config->io_base + 8);
#endif
return mem_start;
}
#ifndef EXCLUDE_GUS_IODETECT
/*
* Look at the possible base addresses (0x2X0, X=1, 2, 3, 4, 5, 6)
*/
for (io_addr = 0x210; io_addr <= 0x260; io_addr += 0x10)
if (io_addr != hw_config->io_base) /*
* Already tested
*/
if (gus_wave_detect (io_addr))
{
printk (" WARNING! GUS found at %x, config was %x ", io_addr, hw_config->io_base);
mem_start = gus_wave_init (mem_start, hw_config->irq, hw_config->dma,
hw_config->dma_read);
#ifndef EXCLUDE_MIDI
mem_start = gus_midi_init (mem_start);
#endif
#ifndef EXCLUDE_SEQUENCER
sound_timer_init (io_addr + 8);
#endif
return mem_start;
}
#endif
return mem_start; /*
* Not detected
*/
}
int
probe_gus (struct address_info *hw_config)
{
int io_addr;
if (gus_wave_detect (hw_config->io_base))
return 1;
#ifndef EXCLUDE_GUS_IODETECT
/*
* Look at the possible base addresses (0x2X0, X=1, 2, 3, 4, 5, 6)
*/
for (io_addr = 0x210; io_addr <= 0x260; io_addr += 0x10)
if (io_addr != hw_config->io_base) /*
* Already tested
*/
if (gus_wave_detect (io_addr))
return 1;
#endif
return 0;
}
void
gusintr (INT_HANDLER_PARMS (irq, dummy))
{
unsigned char src;
#ifdef linux
sti ();
#endif
#ifndef EXCLUDE_GUSMAX
if (have_gus_max)
# if defined(__FreeBSD__)
ad1848_interrupt (INT_HANDLER_CALL (gus_irq));
# else
ad1848_interrupt (INT_HANDLER_CALL (irq));
# endif
#endif
while (1)
{
if (!(src = INB (u_IrqStatus)))
return;
if (src & DMA_TC_IRQ)
{
guswave_dma_irq ();
}
if (src & (MIDI_TX_IRQ | MIDI_RX_IRQ))
{
#ifndef EXCLUDE_MIDI
gus_midi_interrupt (0);
#endif
}
if (src & (GF1_TIMER1_IRQ | GF1_TIMER2_IRQ))
{
#ifndef EXCLUDE_SEQUENCER
sound_timer_interrupt ();
#else
gus_write8 (0x45, 0); /* Stop timers */
#endif
}
if (src & (WAVETABLE_IRQ | ENVELOPE_IRQ))
{
gus_voice_irq ();
}
}
}
#endif
/*
* Some extra code for the 16 bit sampling option
*/
#if defined(CONFIGURE_SOUNDCARD) && !defined(EXCLUDE_GUS16)
int
probe_gus_db16 (struct address_info *hw_config)
{
return ad1848_detect (hw_config->io_base);
}
long
attach_gus_db16 (long mem_start, struct address_info *hw_config)
{
gus_pcm_volume = 100;
gus_wave_volume = 90;
ad1848_init ("GUS 16 bit sampling", hw_config->io_base,
hw_config->irq,
hw_config->dma,
hw_config->dma);
return mem_start;
}
#endif
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