path: root/drivers/sound/dev_table.c

/*
 * sound/dev_table.c
 *
 * Device call tables.
 */
/*
 * 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>


#define _DEV_TABLE_C_
#include "sound_config.h"
int             sb_be_quiet = 0;
int             softoss_dev = 0;

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;

#ifdef FIXME
	if (!(soundcards_installed = sndtable_get_cardcount()))
		return;		/* No cards detected */
#endif

#ifdef CONFIG_AUDIO
	if (num_audiodevs)	/* Audio devices present */
	  {
		  int             dev;

		  for (dev = 0; dev < num_audiodevs; dev++)
		    {
		    }
		  audio_init_devices();
	  }
#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);

#ifdef FIXME
		sound_preinit_lowlevel_drivers();
#endif
	}
#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;
				      }
			    }
		  }
        for (i=0;i<num_audiodevs;i++)
		DMAbuf_deinit(i);

	if (trace_init)
		printk("Sound unload complete\n");
}

void
sound_unload_driver(int type)
{
	int             i, drv = -1, n = num_sound_cards;


	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"));
}


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 (vers != AUDIO_DRIVER_VERSION ||
	    driver_size > sizeof(struct audio_driver))
	  {
		  printk(KERN_ERR "Sound: Incompatible audio driver for %s\n", name);
		  return -(EINVAL);
	  }
	num = sound_alloc_audiodev();

	if (num == -1)
	  {
		  printk(KERN_ERR "sound: Too many audio drivers\n");
		  return -(EBUSY);
	  }
	d = (struct audio_driver *) (sound_mem_blocks[sound_nblocks] = vmalloc(sizeof(struct audio_driver)));
	sound_mem_sizes[sound_nblocks] = sizeof(struct audio_driver);

	if (sound_nblocks < 1024)
		sound_nblocks++;;

	op = (struct audio_operations *) (sound_mem_blocks[sound_nblocks] = vmalloc(sizeof(struct audio_operations)));
	sound_mem_sizes[sound_nblocks] = sizeof(struct audio_operations);

	if (sound_nblocks < 1024)
		sound_nblocks++;;
	if (d == NULL || op == NULL)
	  {
		  printk(KERN_ERR "Sound: Can't allocate driver for (%s)\n", name);
		  sound_unload_audiodev(num);
		  return -(ENOMEM);
	  }
	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;

/*
 *    Hardcoded defaults
 */
	audio_devs[num] = op;

	DMAbuf_init(num, dma1, dma2);

	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;

	int             n = sound_alloc_mixerdev();

	if (n == -1)
	  {
		  printk(KERN_ERR "Sound: Too many mixer drivers\n");
		  return -(EBUSY);
	  }
	if (vers != MIXER_DRIVER_VERSION ||
	    driver_size > sizeof(struct mixer_operations))
	  {
		  printk(KERN_ERR "Sound: Incompatible mixer driver for %s\n", name);
		  return -(EINVAL);
	  }
	op = (struct mixer_operations *) (sound_mem_blocks[sound_nblocks] = vmalloc(sizeof(struct mixer_operations)));
	sound_mem_sizes[sound_nblocks] = sizeof(struct mixer_operations);

	if (sound_nblocks < 1024)
		sound_nblocks++;;
	if (op == NULL)
	  {
		  printk(KERN_ERR "Sound: Can't allocate mixer driver for (%s)\n", name);
		  return -(ENOMEM);
	  }
	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[n] = op;
	return n;
}

void
sound_unload_audiodev(int dev)
{
	if (dev != -1)
		audio_devs[dev] = NULL;
}

int
sound_alloc_audiodev(void)
{
	int             i;

	for (i = 0; i < MAX_AUDIO_DEV; i++)
	  {
		  if (audio_devs[i] == NULL)
		    {
			    if (i >= num_audiodevs)
				    num_audiodevs = i + 1;
			    return i;
		    }
	  }
	return -1;
}

int
sound_alloc_mididev(void)
{
	int             i;

	for (i = 0; i < MAX_MIDI_DEV; i++)
	  {
		  if (midi_devs[i] == NULL)
		    {
			    if (i >= num_midis)
				    num_midis++;
			    return i;
		    }
	  }

	return -1;
}

int
sound_alloc_synthdev(void)
{
	int             i;

	for (i = 0; i < MAX_SYNTH_DEV; i++)
	  {
		  if (synth_devs[i] == NULL)
		    {
			    if (i >= num_synths)
				    num_synths++;
			    return i;
		    }
	  }
	return -1;
}

int
sound_alloc_mixerdev(void)
{
	int             i;

	for (i = 0; i < MAX_MIXER_DEV; i++)
	  {
		  if (mixer_devs[i] == NULL)
		    {
			    if (i >= num_mixers)
				    num_mixers++;
			    return i;
		    }
	  }
	return -1;
}

int
sound_alloc_timerdev(void)
{
	int             i;

	for (i = 0; i < MAX_TIMER_DEV; i++)
	  {
		  if (sound_timer_devs[i] == NULL)
		    {
			    if (i >= num_sound_timers)
				    num_sound_timers++;
			    return i;
		    }
	  }
	return -1;
}

void
sound_unload_mixerdev(int dev)
{
	if (dev != -1)
		mixer_devs[dev] = NULL;
}

void
sound_unload_mididev(int dev)
{
#ifdef CONFIG_MIDI
	if (dev != -1)
		midi_devs[dev] = NULL;
#endif
}

void
sound_unload_synthdev(int dev)
{
	if (dev != -1)
		synth_devs[dev] = NULL;
}

void
sound_unload_timerdev(int dev)
{
	if (dev != -1)
		sound_timer_devs[dev] = NULL;
}