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/*
* sound/gus_card.c
*
* Detection routine for the Gravis Ultrasound.
*/
/*
* Copyright (C) by Hannu Savolainen 1993-1997
*
* OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
* Version 2 (June 1991). See the "COPYING" file distributed with this software
* for more info.
*/
#include <linux/config.h>
#include <linux/module.h>
#include "sound_config.h"
#include "soundmodule.h"
#if defined(CONFIG_GUS) || defined(MODULE)
#include "gus_hw.h"
void gusintr(int irq, void *dev_id, struct pt_regs *dummy);
int gus_base = 0, gus_irq = 0, gus_dma = 0;
extern int gus_wave_volume;
extern int gus_pcm_volume;
extern int have_gus_max;
int gus_pnp_flag = 0;
void attach_gus_card(struct address_info *hw_config)
{
snd_set_irq_handler(hw_config->irq, gusintr, "Gravis Ultrasound", hw_config->osp, hw_config);
gus_wave_init(hw_config);
request_region(hw_config->io_base, 16, "GUS");
request_region(hw_config->io_base + 0x100, 12, "GUS"); /* 0x10c-> is MAX */
if (sound_alloc_dma(hw_config->dma, "GUS"))
printk("gus_card.c: Can't allocate DMA channel\n");
if (hw_config->dma2 != -1 && hw_config->dma2 != hw_config->dma)
if (sound_alloc_dma(hw_config->dma2, "GUS(2)"))
printk("gus_card.c: Can't allocate DMA channel 2\n");
#if defined(CONFIG_MIDI)
gus_midi_init(hw_config);
#endif
}
int probe_gus(struct address_info *hw_config)
{
int irq;
int io_addr;
if (hw_config->card_subtype == 1)
gus_pnp_flag = 1;
irq = hw_config->irq;
if (hw_config->card_subtype == 0) /* GUS/MAX/ACE */
if (irq != 3 && irq != 5 && irq != 7 && irq != 9 &&
irq != 11 && irq != 12 && irq != 15)
{
printk(KERN_ERR "GUS: Unsupported IRQ %d\n", irq);
return 0;
}
if (check_region(hw_config->io_base, 16))
printk(KERN_ERR "GUS: I/O range conflict (1)\n");
else if (check_region(hw_config->io_base + 0x100, 16))
printk(KERN_ERR "GUS: I/O range conflict (2)\n");
else 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 (!check_region(io_addr, 16))
if (!check_region(io_addr + 0x100, 16))
if (gus_wave_detect(io_addr))
{
hw_config->io_base = io_addr;
return 1;
}
#endif
return 0;
}
void unload_gus(struct address_info *hw_config)
{
DDB(printk("unload_gus(%x)\n", hw_config->io_base));
gus_wave_unload(hw_config);
release_region(hw_config->io_base, 16);
release_region(hw_config->io_base + 0x100, 12); /* 0x10c-> is MAX */
snd_release_irq(hw_config->irq, hw_config);
sound_free_dma(hw_config->dma);
if (hw_config->dma2 != -1 && hw_config->dma2 != hw_config->dma)
sound_free_dma(hw_config->dma2);
}
void gusintr(int irq, void *dev_id, struct pt_regs *dummy)
{
unsigned char src;
extern int gus_timer_enabled;
struct address_info *hw_config=dev_id;
sti();
#ifdef CONFIG_GUSMAX
if (have_gus_max)
adintr(irq, (void *)hw_config->slots[3], NULL);
#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))
{
#if defined(CONFIG_MIDI)
gus_midi_interrupt(0);
#endif
}
if (src & (GF1_TIMER1_IRQ | GF1_TIMER2_IRQ))
{
#if defined(CONFIG_SEQUENCER) || defined(CONFIG_SEQUENCER_MODULE)
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
*/
#ifdef 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)
{
#if defined(CONFIG_GUS) || defined(MODULE)
gus_pcm_volume = 100;
gus_wave_volume = 90;
#endif
hw_config->slots[3] = ad1848_init("GUS 16 bit sampling", hw_config->io_base,
hw_config->irq,
hw_config->dma,
hw_config->dma, 0,
hw_config->osp);
}
void unload_gus_db16(struct address_info *hw_config)
{
ad1848_unload(hw_config->io_base,
hw_config->irq,
hw_config->dma,
hw_config->dma, 0);
sound_unload_audiodev(hw_config->slots[3]);
}
#endif
#ifdef MODULE
static struct address_info config;
/*
* Note DMA2 of -1 has the right meaning in the GUS driver as well
* as here.
*/
int io = -1;
int irq = -1;
int dma = -1;
int dma16 = -1; /* Set this for modules that need it */
int type = 0; /* 1 for PnP */
int gus16 = 0;
static int db16 = 0; /* Has a Gus16 AD1848 on it */
MODULE_PARM(io, "i");
MODULE_PARM(irq, "i");
MODULE_PARM(dma, "i");
MODULE_PARM(dma16, "i");
MODULE_PARM(type, "i");
MODULE_PARM(gus16, "i");
MODULE_PARM(db16, "i");
int init_module(void)
{
printk(KERN_INFO "Gravis Ultrasound audio driver Copyright (C) by Hannu Savolainen 1993-1996\n");
if (io == -1 || dma == -1 || irq == -1)
{
printk(KERN_ERR "I/O, IRQ, and DMA are mandatory\n");
return -EINVAL;
}
config.io_base = io;
config.irq = irq;
config.dma = dma;
config.dma2 = dma16;
config.card_subtype = type;
#if defined(CONFIG_GUS16)
if (probe_gus_db16(&config) && gus16)
{
attach_gus_db16(&config);
db16 = 1;
}
#endif
if (probe_gus(&config) == 0)
return -ENODEV;
attach_gus_card(&config);
SOUND_LOCK;
return 0;
}
void cleanup_module(void)
{
#if defined(CONFIG_GUS16)
if (db16)
unload_gus_db16(&config);
#endif
unload_gus(&config);
SOUND_LOCK_END;
}
#endif
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