/*
* sound/dev_table.c
*
* Device call tables.
*/
/*
* Copyright (C) by Hannu Savolainen 1993-1996
*
* 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>
#define _DEV_TABLE_C_
#include "sound_config.h"
int sound_started = 0;
int sndtable_get_cardcount (void);
int
snd_find_driver (int type)
{
int i, n = num_sound_drivers;
for (i = 0; i < n; i++)
if (sound_drivers[i].card_type == type)
return i;
return -1;
}
static void
start_services (void)
{
int soundcards_installed;
if (!(soundcards_installed = sndtable_get_cardcount ()))
return; /* No cards detected */
#ifdef CONFIG_AUDIO
if (num_audiodevs) /* Audio devices present */
{
DMAbuf_init ();
audio_init_devices ();
}
#endif
#ifdef CONFIG_MIDI
if (num_midis)
MIDIbuf_init ();
#endif
#ifdef CONFIG_SEQUENCER
if (num_midis + num_synths)
sequencer_init ();
#endif
return;
}
static void
start_cards (void)
{
int i, n = num_sound_cards;
int drv;
sound_started = 1;
if (trace_init)
printk ("Sound initialization started\n");
#ifdef CONFIG_LOWLEVEL_SOUND
{
extern void sound_preinit_lowlevel_drivers (void);
sound_preinit_lowlevel_drivers ();
}
#endif
/*
* Check the number of cards actually defined in the table
*/
for (i = 0; i < n && snd_installed_cards[i].card_type; i++)
num_sound_cards = i + 1;
for (i = 0; i < n && snd_installed_cards[i].card_type; i++)
if (snd_installed_cards[i].enabled)
{
snd_installed_cards[i].for_driver_use = NULL;
if ((drv = snd_find_driver (snd_installed_cards[i].card_type)) == -1)
{
snd_installed_cards[i].enabled = 0; /*
* Mark as not detected
*/
continue;
}
snd_installed_cards[i].config.card_subtype =
sound_drivers[drv].card_subtype;
if (sound_drivers[drv].probe (&snd_installed_cards[i].config))
{
sound_drivers[drv].attach (&snd_installed_cards[i].config);
}
else
snd_installed_cards[i].enabled = 0; /*
* Mark as not detected
*/
}
#ifdef CONFIG_LOWLEVEL_SOUND
{
extern void sound_init_lowlevel_drivers (void);
sound_init_lowlevel_drivers ();
}
#endif
if (trace_init)
printk ("Sound initialization complete\n");
}
void
sndtable_init (void)
{
start_cards ();
}
void
sound_unload_drivers (void)
{
int i, n = num_sound_cards;
int drv;
if (!sound_started)
return;
if (trace_init)
printk ("Sound unload started\n");
for (i = 0; i < n && snd_installed_cards[i].card_type; i++)
if (snd_installed_cards[i].enabled)
if ((drv = snd_find_driver (snd_installed_cards[i].card_type)) != -1)
if (sound_drivers[drv].unload)
{
sound_drivers[drv].unload (&snd_installed_cards[i].config);
snd_installed_cards[i].enabled = 0;
}
if (trace_init)
printk ("Sound unload complete\n");
}
void
sound_unload_driver (int type)
{
int i, drv = -1, n = num_sound_cards;
unsigned long flags;
DEB (printk ("unload driver %d: ", type));
for (i = 0; i < n && snd_installed_cards[i].card_type; i++)
if (snd_installed_cards[i].card_type == type)
{
if (snd_installed_cards[i].enabled)
{
if ((drv = snd_find_driver (type)) != -1)
{
DEB (printk (" card %d", i));
if (sound_drivers[drv].unload)
{
sound_drivers[drv].unload (&snd_installed_cards[i].config);
snd_installed_cards[i].enabled = 0;
}
}
}
}
DEB (printk ("\n"));
save_flags (flags);
cli ();
restore_flags (flags);
}
int
sndtable_probe (int unit, struct address_info *hw_config)
{
int sel = -1;
DEB (printk ("sndtable_probe(%d)\n", unit));
if (!unit)
return 1;
if (sel == -1 && num_sound_cards < max_sound_cards)
{
int i;
i = sel = (num_sound_cards++);
snd_installed_cards[sel].card_type = unit;
snd_installed_cards[sel].enabled = 1;
}
if (sel != -1)
{
int drv;
snd_installed_cards[sel].for_driver_use = NULL;
snd_installed_cards[sel].config.io_base = hw_config->io_base;
snd_installed_cards[sel].config.irq = hw_config->irq;
snd_installed_cards[sel].config.dma = hw_config->dma;
snd_installed_cards[sel].config.dma2 = hw_config->dma2;
snd_installed_cards[sel].config.name = hw_config->name;
snd_installed_cards[sel].config.always_detect = hw_config->always_detect;
snd_installed_cards[sel].config.driver_use_1 = hw_config->driver_use_1;
snd_installed_cards[sel].config.driver_use_2 = hw_config->driver_use_2;
snd_installed_cards[sel].config.card_subtype = hw_config->card_subtype;
if ((drv = snd_find_driver (snd_installed_cards[sel].card_type)) == -1)
{
snd_installed_cards[sel].enabled = 0;
DEB (printk ("Failed to find driver\n"));
return 0;
}
DEB (printk ("Driver name '%s'\n", sound_drivers[drv].name));
hw_config->card_subtype =
snd_installed_cards[sel].config.card_subtype =
sound_drivers[drv].card_subtype;
if (sound_drivers[drv].probe (hw_config))
{
DEB (printk ("Hardware probed OK\n"));
return 1;
}
DEB (printk ("Failed to find hardware\n"));
snd_installed_cards[sel].enabled = 0; /*
* Mark as not detected
*/
return 0;
}
return 0;
}
int
sndtable_init_card (int unit, struct address_info *hw_config)
{
int i, n = num_sound_cards;
DEB (printk ("sndtable_init_card(%d) entered\n", unit));
if (!unit)
{
sndtable_init ();
return 1;
}
for (i = 0; i < n && snd_installed_cards[i].card_type; i++)
if (snd_installed_cards[i].card_type == unit)
{
int drv;
snd_installed_cards[i].config.io_base = hw_config->io_base;
snd_installed_cards[i].config.irq = hw_config->irq;
snd_installed_cards[i].config.dma = hw_config->dma;
snd_installed_cards[i].config.dma2 = hw_config->dma2;
snd_installed_cards[i].config.name = hw_config->name;
snd_installed_cards[i].config.always_detect = hw_config->always_detect;
snd_installed_cards[i].config.driver_use_1 = hw_config->driver_use_1;
snd_installed_cards[i].config.driver_use_2 = hw_config->driver_use_2;
snd_installed_cards[i].config.card_subtype = hw_config->card_subtype;
if ((drv = snd_find_driver (snd_installed_cards[i].card_type)) == -1)
snd_installed_cards[i].enabled = 0; /*
* Mark as not detected
*/
else
{
DEB (printk ("Located card - calling attach routine\n"));
sound_drivers[drv].attach (hw_config);
DEB (printk ("attach routine finished\n"));
}
start_services ();
return 1;
}
DEB (printk ("sndtable_init_card: No card defined with type=%d, num cards: %d\n",
unit, num_sound_cards));
return 0;
}
int
sndtable_get_cardcount (void)
{
return num_audiodevs + num_mixers + num_synths + num_midis;
}
int
sndtable_identify_card (char *name)
{
int i, n = num_sound_drivers;
if (name == NULL)
return 0;
for (i = 0; i < n; i++)
if (sound_drivers[i].driver_id != NULL)
{
char *id = sound_drivers[i].driver_id;
int j;
for (j = 0; j < 80 && name[j] == id[j]; j++)
if (id[j] == 0 && name[j] == 0) /* Match */
return sound_drivers[i].card_type;
}
return 0;
}
void
sound_setup (char *str, int *ints)
{
int i, n = num_sound_cards;
/*
* First disable all drivers
*/
for (i = 0; i < n && snd_installed_cards[i].card_type; i++)
snd_installed_cards[i].enabled = 0;
if (ints[0] == 0 || ints[1] == 0)
return;
/*
* Then enable them one by time
*/
for (i = 1; i <= ints[0]; i++)
{
int card_type, ioaddr, irq, dma, dma2, ptr, j;
unsigned int val;
val = (unsigned int) ints[i];
card_type = (val & 0x0ff00000) >> 20;
if (card_type > 127)
{
/*
* Add any future extensions here
*/
return;
}
ioaddr = (val & 0x000fff00) >> 8;
irq = (val & 0x000000f0) >> 4;
dma = (val & 0x0000000f);
dma2 = (val & 0xf0000000) >> 28;
ptr = -1;
for (j = 0; j < n && ptr == -1; j++)
if (snd_installed_cards[j].card_type == card_type &&
!snd_installed_cards[j].enabled) /*
* Not already found
*/
ptr = j;
if (ptr == -1)
printk ("Sound: Invalid setup parameter 0x%08x\n", val);
else
{
snd_installed_cards[ptr].enabled = 1;
snd_installed_cards[ptr].config.io_base = ioaddr;
snd_installed_cards[ptr].config.irq = irq;
snd_installed_cards[ptr].config.dma = dma;
snd_installed_cards[ptr].config.dma2 = dma2;
snd_installed_cards[ptr].config.name = NULL;
snd_installed_cards[ptr].config.always_detect = 0;
snd_installed_cards[ptr].config.driver_use_1 = 0;
snd_installed_cards[ptr].config.driver_use_2 = 0;
snd_installed_cards[ptr].config.card_subtype = 0;
}
}
}
struct address_info
*
sound_getconf (int card_type)
{
int j, ptr;
int n = num_sound_cards;
ptr = -1;
for (j = 0; j < n && ptr == -1 && snd_installed_cards[j].card_type; j++)
if (snd_installed_cards[j].card_type == card_type)
ptr = j;
if (ptr == -1)
return (struct address_info *) NULL;
return &snd_installed_cards[ptr].config;
}
int
sound_install_audiodrv (int vers,
char *name,
struct audio_driver *driver,
int driver_size,
int flags,
unsigned int format_mask,
void *devc,
int dma1,
int dma2)
{
#ifdef CONFIG_AUDIO
struct audio_driver *d;
struct audio_operations *op;
int l, num;
if (num_audiodevs >= MAX_AUDIO_DEV)
{
printk ("Sound: Too many audio drivers\n");
return -EIO;
}
if (vers != AUDIO_DRIVER_VERSION ||
driver_size > sizeof (struct audio_driver))
{
printk ("Sound: Incompatible audio driver for %s\n", name);
return -EIO;
}
d = (struct audio_driver *) (sound_mem_blocks[sound_nblocks] = vmalloc (sizeof (struct audio_driver)));
if (sound_nblocks < 1024)
sound_nblocks++;;
op = (struct audio_operations *) (sound_mem_blocks[sound_nblocks] = vmalloc (sizeof (struct audio_operations)));
if (sound_nblocks < 1024)
sound_nblocks++;;
if (d == NULL || op == NULL)
{
printk ("Sound: Can't allocate driver for (%s)\n", name);
return -ENOSPC;
}
memset ((char *) op, 0, sizeof (struct audio_operations));
if (driver_size < sizeof (struct audio_driver))
memset ((char *) d, 0, sizeof (struct audio_driver));
memcpy ((char *) d, (char *) driver, driver_size);
op->d = d;
l = strlen (name) + 1;
if (l > sizeof (op->name))
l = sizeof (op->name);
strncpy (op->name, name, l);
op->name[l - 1] = 0;
op->flags = flags;
op->format_mask = format_mask;
op->devc = devc;
op->dmachan1 = dma1;
op->dmachan2 = dma2;
/*
* Hardcoded defaults
*/
op->buffsize = DSP_BUFFSIZE;
audio_devs[num_audiodevs] = op;
num = num_audiodevs++;
DMAbuf_init ();
audio_init_devices ();
return num;
#else
return -EINVAL;
#endif
}
int
sound_install_mixer (int vers,
char *name,
struct mixer_operations *driver,
int driver_size,
void *devc)
{
struct mixer_operations *op;
int l;
if (num_mixers >= MAX_MIXER_DEV)
{
printk ("Sound: Too many mixer drivers\n");
return -EIO;
}
if (vers != MIXER_DRIVER_VERSION ||
driver_size > sizeof (struct mixer_operations))
{
printk ("Sound: Incompatible mixer driver for %s\n", name);
return -EIO;
}
op = (struct mixer_operations *) (sound_mem_blocks[sound_nblocks] = vmalloc (sizeof (struct mixer_operations)));
if (sound_nblocks < 1024)
sound_nblocks++;;
if (op == NULL)
{
printk ("Sound: Can't allocate mixer driver for (%s)\n", name);
return -ENOSPC;
}
memset ((char *) op, 0, sizeof (struct mixer_operations));
memcpy ((char *) op, (char *) driver, driver_size);
l = strlen (name) + 1;
if (l > sizeof (op->name))
l = sizeof (op->name);
strncpy (op->name, name, l);
op->name[l - 1] = 0;
op->devc = devc;
mixer_devs[num_mixers] = op;
return num_mixers++;
}
