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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 <i386/isa/sound/sound_config.h>
#if defined(CONFIG_GUS)
#include <i386/isa/sound/gus_hw.h>
#include <i386/isa/sound/iwdefs.h>
int gus_base, gus_irq, gus_dma;
extern int gus_wave_volume;
extern int gus_pcm_volume;
extern int have_gus_max;
extern int gus_timer_enabled;
static sound_os_info *gus_osp;
#ifndef NOGUSPNP
int IwaveOpen(char voices, char mode, struct address_info * hw);
#endif
void
attach_gus_card(struct address_info * hw_config)
{
int io_addr;
gus_osp = hw_config->osp;
snd_set_irq_handler(hw_config->irq, gusintr, hw_config->osp);
if (gus_wave_detect(hw_config->io_base)) {
/* Try first the default */
gus_wave_init(hw_config);
/* 0x10c-> is MAX */
if (hw_config->dma2 != -1 && hw_config->dma2 != hw_config->dma)
if (0)
printf("gus_card.c: Can't allocate DMA channel2\n");
#ifdef CONFIG_MIDI
gus_midi_init();
#endif
return ;
}
#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 */
&& (gus_wave_detect(io_addr)) ) {
hw_config->io_base = io_addr;
printf(" WARNING! GUS found at %x, config was %x ",
io_addr, hw_config->io_base);
gus_wave_init(hw_config);
/* 0x10c-> is MAX */
if (hw_config->dma2 != -1 && hw_config->dma2 != hw_config->dma)
if (0)
printf("gus_card.c: Can't allocate DMA channel2\n");
#ifdef CONFIG_MIDI
gus_midi_init();
#endif
return ;
}
#endif
}
int
probe_gus(struct address_info * hw_config)
{
int io_addr;
gus_osp = hw_config->osp;
#ifndef NOGUSPNP
IwaveOpen((char) 32, (char) GUS_MODE, hw_config);
#endif
if (gus_wave_detect(hw_config->io_base))
return 1;
printf("oops I didnt find gus \n");
#undef EXCLUDE_GUS_IODETECT
#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 */
&& (gus_wave_detect(io_addr)) ) {
hw_config->io_base = io_addr;
return 1;
}
#endif
return 0;
}
void
gusintr(int irq)
{
u_char src;
#ifdef CONFIG_GUSMAX
if (have_gus_max)
ad1848_interrupt(irq);
#endif
for (;;) {
if (!(src = inb(u_IrqStatus)))
return;
if (src & DMA_TC_IRQ)
guswave_dma_irq();
#ifdef CONFIG_MIDI
if (src & (MIDI_TX_IRQ | MIDI_RX_IRQ))
gus_midi_interrupt(0);
#endif
if (src & (GF1_TIMER1_IRQ | GF1_TIMER2_IRQ)) {
#ifdef CONFIG_SEQUENCER
if (gus_timer_enabled)
sound_timer_interrupt();
gus_write8(0x45, 0); /* Ack IRQ */
gus_timer_command(4, 0x80); /* Reset IRQ flags */
#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(CONFIG_GUS16)
int
probe_gus_db16(struct address_info * hw_config)
{
return ad1848_detect(hw_config->io_base, NULL, hw_config->osp);
}
void
attach_gus_db16(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, 0,
hw_config->osp);
}
#endif
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