patch-2.1.77 linux/drivers/sound/sound_switch.c

• Lines: 735
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.76/linux/drivers/sound/sound_switch.c
• Orig date: Sat Nov 29 11:25:11 1997

diff -u --recursive --new-file v2.1.76/linux/drivers/sound/sound_switch.c linux/drivers/sound/sound_switch.c
@@ -1,734 +0,0 @@
-/*
- * sound/sound_switch.c
- *
- * The system call switch handler
- */
-/*
- * 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 "sound_config.h"
-
-static int      in_use = 0;	/* Total # of open devices */
-unsigned long   seq_time = 0;	/* Time for /dev/sequencer */
-
-/*
- * Table for configurable mixer volume handling
- */
-static mixer_vol_table mixer_vols[MAX_MIXER_DEV];
-static int      num_mixer_volumes = 0;
-
-/*
- * /dev/sndstatus -device
- */
-static char    *status_buf = NULL;
-static int      status_len, status_ptr;
-static int      status_busy = 0;
-
-int
-               *
-load_mixer_volumes(char *name, int *levels, int present)
-{
-	int             i, n;
-
-	for (i = 0; i < num_mixer_volumes; i++)
-		if (strcmp(name, mixer_vols[i].name) == 0)
-		  {
-			  if (present)
-				  mixer_vols[i].num = i;
-			  return mixer_vols[i].levels;
-		  }
-	if (num_mixer_volumes >= MAX_MIXER_DEV)
-	  {
-		  printk("Sound: Too many mixers (%s)\n", name);
-		  return levels;
-	  }
-	n = num_mixer_volumes++;
-
-	strcpy(mixer_vols[n].name, name);
-
-	if (present)
-		mixer_vols[n].num = n;
-	else
-		mixer_vols[n].num = -1;
-
-	for (i = 0; i < 32; i++)
-		mixer_vols[n].levels[i] = levels[i];
-	return mixer_vols[n].levels;
-}
-
-static int
-set_mixer_levels(caddr_t arg)
-{
-	mixer_vol_table *buf = NULL;
-	int             err = 0;
-
-	if ((buf = (mixer_vol_table *) vmalloc(sizeof(mixer_vol_table))) == NULL)
-		return -ENOSPC;
-
-	memcpy((char *) buf, (&((char *) arg)[0]), sizeof(*buf));
-
-	load_mixer_volumes(buf->name, buf->levels, 0);
-
-	memcpy((&((char *) arg)[0]), (char *) buf, sizeof(*buf));
-	vfree(buf);
-
-	return err;
-}
-
-static int
-get_mixer_levels(caddr_t arg)
-{
-	mixer_vol_table *buf = NULL;
-	int             n, err = 0;
-
-	if ((buf = (mixer_vol_table *) vmalloc(sizeof(mixer_vol_table))) == NULL)
-		return -ENOSPC;
-
-	memcpy((char *) buf, (&((char *) arg)[0]), sizeof(*buf));
-
-	n = buf->num;
-	if (n < 0 || n >= num_mixer_volumes)
-		err = -EINVAL;
-	else
-	  {
-		  memcpy((char *) buf, (char *) &mixer_vols[n], sizeof(*buf));
-	  }
-
-	memcpy((&((char *) arg)[0]), (char *) buf, sizeof(*buf));
-	vfree(buf);
-
-	return err;
-}
-
-static int
-put_status(char *s)
-{
-	int             l = strlen(s);
-
-	if (status_len + l >= 4000)
-		return 0;
-
-	memcpy(&status_buf[status_len], s, l);
-	status_len += l;
-
-	return 1;
-}
-
-static int
-put_status_int(unsigned int val, int radix)
-{
-	int             l, v;
-
-	static char     hx[] = "0123456789abcdef";
-	char            buf[11];
-
-	if (!val)
-		return put_status("0");
-
-	l = 0;
-	buf[10] = 0;
-
-	while (val)
-	  {
-		  v = val % radix;
-		  val = val / radix;
-
-		  buf[9 - l] = hx[v];
-		  l++;
-	  }
-
-	if (status_len + l >= 4000)
-		return 0;
-
-	memcpy(&status_buf[status_len], &buf[10 - l], l);
-	status_len += l;
-
-	return 1;
-}
-
-static void
-init_status(void)
-{
-	/*
-	 * Write the status information to the status_buf and update status_len.
-	 * There is a limit of 4000 bytes for the data.
-	 */
-
-	int             i;
-
-	status_ptr = 0;
-
-#ifdef SOUND_UNAME_A
-	put_status("OSS/Free" SOUND_VERSION_STRING
-		   " (" SOUND_CONFIG_DATE " " SOUND_CONFIG_BY ",\n"
-		   SOUND_UNAME_A ")"
-		   "\n");
-#else
-	put_status("OSS/Free:" SOUND_VERSION_STRING
-#if 0
-		   " (" SOUND_CONFIG_DATE " " SOUND_CONFIG_BY "@"
-		   SOUND_CONFIG_HOST "." SOUND_CONFIG_DOMAIN ")"
-#endif
-		   "\n");
-#endif
-
-#ifdef MODULE
-	put_status("Load type: Driver loaded as a module.\n");
-#else
-	put_status("Load type: Driver compiled into kernel\n");
-#endif
-	put_status("Kernel: ");
-	put_status(system_utsname.sysname);
-	put_status(" ");
-	put_status(system_utsname.nodename);
-	put_status(" ");
-	put_status(system_utsname.release);
-	put_status(" ");
-	put_status(system_utsname.version);
-	put_status(" ");
-	put_status(system_utsname.machine);
-	put_status("\n");
-
-
-	if (!put_status("Config options: "))
-		return;
-	if (!put_status_int(SELECTED_SOUND_OPTIONS, 16))
-		return;
-
-	if (!put_status("\n\nInstalled drivers: \n"))
-		return;
-
-	for (i = 0; i < num_sound_drivers; i++)
-		if (sound_drivers[i].card_type != 0)
-		  {
-			  if (!put_status("Type "))
-				  return;
-			  if (!put_status_int(sound_drivers[i].card_type, 10))
-				  return;
-			  if (!put_status(": "))
-				  return;
-			  if (!put_status(sound_drivers[i].name))
-				  return;
-
-			  if (!put_status("\n"))
-				  return;
-		  }
-	if (!put_status("\nCard config: \n"))
-		return;
-
-	for (i = 0; i < num_sound_cards; i++)
-		if (snd_installed_cards[i].card_type != 0)
-		  {
-			  int             drv, tmp;
-
-			  if (!snd_installed_cards[i].enabled)
-				  if (!put_status("("))
-					  return;
-
-			  /*
-			   * if (!put_status_int(snd_installed_cards[i].card_type, 10)) return;
-			   * if (!put_status (": ")) return;
-			   */
-
-			  if ((drv = snd_find_driver(snd_installed_cards[i].card_type)) != -1)
-				  if (!put_status(sound_drivers[drv].name))
-					  return;
-
-			  if (snd_installed_cards[i].config.io_base)
-			    {
-				    if (!put_status(" at 0x"))
-					    return;
-				    if (!put_status_int(snd_installed_cards[i].config.io_base, 16))
-					    return;
-			    }
-			  tmp = snd_installed_cards[i].config.irq;
-			  if (tmp != 0)
-			    {
-				    if (!put_status(" irq "))
-					    return;
-				    if (tmp < 0)
-					    tmp = -tmp;
-				    if (!put_status_int(tmp, 10))
-					    return;
-			    }
-			  if (snd_installed_cards[i].config.dma != -1)
-			    {
-				    if (!put_status(" drq "))
-					    return;
-				    if (!put_status_int(snd_installed_cards[i].config.dma, 10))
-					    return;
-				    if (snd_installed_cards[i].config.dma2 != -1)
-				      {
-					      if (!put_status(","))
-						      return;
-					      if (!put_status_int(snd_installed_cards[i].config.dma2, 10))
-						      return;
-				      }
-			    }
-			  if (!snd_installed_cards[i].enabled)
-				  if (!put_status(")"))
-					  return;
-
-			  if (!put_status("\n"))
-				  return;
-		  }
-	if (!sound_started)
-	  {
-		  put_status("\n\n***** Sound driver not started *****\n\n");
-		  return;
-	  }
-#ifndef CONFIG_AUDIO
-	if (!put_status("\nAudio devices: NOT ENABLED IN CONFIG\n"))
-		return;
-#else
-	if (!put_status("\nAudio devices:\n"))
-		return;
-
-	for (i = 0; i < num_audiodevs; i++)
-	  {
-		  if (audio_devs[i] == NULL)
-			  continue;
-		  if (!put_status_int(i, 10))
-			  return;
-		  if (!put_status(": "))
-			  return;
-		  if (!put_status(audio_devs[i]->name))
-			  return;
-
-		  if (audio_devs[i]->flags & DMA_DUPLEX)
-			  if (!put_status(" (DUPLEX)"))
-				  return;
-
-		  if (!put_status("\n"))
-			  return;
-	  }
-#endif
-
-#ifndef CONFIG_SEQUENCER
-	if (!put_status("\nSynth devices: NOT ENABLED IN CONFIG\n"))
-		return;
-#else
-	if (!put_status("\nSynth devices:\n"))
-		return;
-
-	for (i = 0; i < num_synths; i++)
-	  {
-		  if (synth_devs[i] == NULL)
-			  continue;
-		  if (!put_status_int(i, 10))
-			  return;
-		  if (!put_status(": "))
-			  return;
-		  if (!put_status(synth_devs[i]->info->name))
-			  return;
-		  if (!put_status("\n"))
-			  return;
-	  }
-#endif
-
-#ifndef CONFIG_MIDI
-	if (!put_status("\nMidi devices: NOT ENABLED IN CONFIG\n"))
-		return;
-#else
-	if (!put_status("\nMidi devices:\n"))
-		return;
-
-	for (i = 0; i < num_midis; i++)
-	  {
-		  if (midi_devs[i] == NULL)
-			  continue;
-		  if (!put_status_int(i, 10))
-			  return;
-		  if (!put_status(": "))
-			  return;
-		  if (!put_status(midi_devs[i]->info.name))
-			  return;
-		  if (!put_status("\n"))
-			  return;
-	  }
-#endif
-
-#ifdef CONFIG_SEQUENCER
-	if (!put_status("\nTimers:\n"))
-		return;
-
-	for (i = 0; i < num_sound_timers; i++)
-	  {
-		  if (sound_timer_devs[i] == NULL)
-			  continue;
-		  if (!put_status_int(i, 10))
-			  return;
-		  if (!put_status(": "))
-			  return;
-		  if (!put_status(sound_timer_devs[i]->info.name))
-			  return;
-		  if (!put_status("\n"))
-			  return;
-	  }
-#endif
-
-	if (!put_status("\nMixers:\n"))
-		return;
-
-	for (i = 0; i < num_mixers; i++)
-	  {
-		  if (mixer_devs[i] == NULL)
-			  continue;
-		  if (!put_status_int(i, 10))
-			  return;
-		  if (!put_status(": "))
-			  return;
-		  if (!put_status(mixer_devs[i]->name))
-			  return;
-		  if (!put_status("\n"))
-			  return;
-	  }
-}
-
-static int
-read_status(char *buf, int count)
-{
-	/*
-	 * Return at most 'count' bytes from the status_buf.
-	 */
-	int             l, c;
-
-	l = count;
-	c = status_len - status_ptr;
-
-	if (l > c)
-		l = c;
-	if (l <= 0)
-		return 0;
-
-	{
-		char           *fixit = &status_buf[status_ptr];
-
-		copy_to_user(&(buf)[0], fixit, l);
-	};
-	status_ptr += l;
-
-	return l;
-}
-
-int
-sound_read_sw(int dev, struct fileinfo *file, char *buf, int count)
-{
-	DEB(printk("sound_read_sw(dev=%d, count=%d)\n", dev, count));
-
-	switch (dev & 0x0f)
-	  {
-	  case SND_DEV_STATUS:
-		  return read_status(buf, count);
-		  break;
-
-#ifdef CONFIG_AUDIO
-	  case SND_DEV_DSP:
-	  case SND_DEV_DSP16:
-	  case SND_DEV_AUDIO:
-		  return audio_read(dev, file, buf, count);
-		  break;
-#endif
-
-#ifdef CONFIG_SEQUENCER
-	  case SND_DEV_SEQ:
-	  case SND_DEV_SEQ2:
-		  return sequencer_read(dev, file, buf, count);
-		  break;
-#endif
-
-#ifdef CONFIG_MIDI
-	  case SND_DEV_MIDIN:
-		  return MIDIbuf_read(dev, file, buf, count);
-#endif
-
-	  default:;
-	  }
-
-	return -EINVAL;
-}
-
-int
-sound_write_sw(int dev, struct fileinfo *file, const char *buf, int count)
-{
-
-	DEB(printk("sound_write_sw(dev=%d, count=%d)\n", dev, count));
-
-
-	switch (dev & 0x0f)
-	  {
-
-#ifdef CONFIG_SEQUENCER
-	  case SND_DEV_SEQ:
-	  case SND_DEV_SEQ2:
-		  return sequencer_write(dev, file, buf, count);
-		  break;
-#endif
-
-#ifdef CONFIG_AUDIO
-	  case SND_DEV_DSP:
-	  case SND_DEV_DSP16:
-	  case SND_DEV_AUDIO:
-		  return audio_write(dev, file, buf, count);
-		  break;
-#endif
-
-#ifdef CONFIG_MIDI
-	  case SND_DEV_MIDIN:
-		  return MIDIbuf_write(dev, file, buf, count);
-#endif
-
-	  }
-
-	return -EINVAL;
-}
-
-int
-sound_open_sw(int dev, struct fileinfo *file)
-{
-	int             retval;
-
-	DEB(printk("sound_open_sw(dev=%d)\n", dev));
-
-	if ((dev >= SND_NDEVS) || (dev < 0))
-	  {
-		  printk("Invalid minor device %d\n", dev);
-		  return -ENXIO;
-	  }
-	switch (dev & 0x0f)
-	  {
-	  case SND_DEV_STATUS:
-		  if (status_busy)
-			  return -EBUSY;
-		  status_busy = 1;
-		  if ((status_buf = (char *) vmalloc(4000)) == NULL)
-		    {
-			    status_busy = 0;
-			    return -EIO;
-		    }
-		  status_len = status_ptr = 0;
-		  init_status();
-		  break;
-
-	  case SND_DEV_CTL:
-		  if ((dev & 0xf0) && ((dev & 0xf0) >> 4) >= num_mixers)
-			  return -ENXIO;
-		  return 0;
-		  break;
-
-#ifdef CONFIG_SEQUENCER
-	  case SND_DEV_SEQ:
-	  case SND_DEV_SEQ2:
-		  if ((retval = sequencer_open(dev, file)) < 0)
-			  return retval;
-		  break;
-#endif
-
-#ifdef CONFIG_MIDI
-	  case SND_DEV_MIDIN:
-		  if ((retval = MIDIbuf_open(dev, file)) < 0)
-			  return retval;
-		  break;
-#endif
-
-#ifdef CONFIG_AUDIO
-	  case SND_DEV_DSP:
-	  case SND_DEV_DSP16:
-	  case SND_DEV_AUDIO:
-		  if ((retval = audio_open(dev, file)) < 0)
-			  return retval;
-		  break;
-#endif
-
-	  default:
-		  printk("Invalid minor device %d\n", dev);
-		  return -ENXIO;
-	  }
-
-	in_use++;
-
-	return 0;
-}
-
-void
-sound_release_sw(int dev, struct fileinfo *file)
-{
-
-	DEB(printk("sound_release_sw(dev=%d)\n", dev));
-
-	switch (dev & 0x0f)
-	  {
-	  case SND_DEV_STATUS:
-		  if (status_buf)
-			  vfree(status_buf);
-		  status_buf = NULL;
-		  status_busy = 0;
-		  break;
-
-	  case SND_DEV_CTL:
-		  break;
-
-#ifdef CONFIG_SEQUENCER
-	  case SND_DEV_SEQ:
-	  case SND_DEV_SEQ2:
-		  sequencer_release(dev, file);
-		  break;
-#endif
-
-#ifdef CONFIG_MIDI
-	  case SND_DEV_MIDIN:
-		  MIDIbuf_release(dev, file);
-		  break;
-#endif
-
-#ifdef CONFIG_AUDIO
-	  case SND_DEV_DSP:
-	  case SND_DEV_DSP16:
-	  case SND_DEV_AUDIO:
-		  audio_release(dev, file);
-		  break;
-#endif
-
-	  default:
-		  printk("Sound error: Releasing unknown device 0x%02x\n", dev);
-	  }
-	in_use--;
-}
-
-static int
-get_mixer_info(int dev, caddr_t arg)
-{
-	mixer_info      info;
-	int             i;
-
-	if (dev < 0 || dev >= num_mixers)
-		return -ENXIO;
-
-	strcpy(info.id, mixer_devs[dev]->id);
-	for (i = 0; i < 32 && mixer_devs[dev]->name; i++)
-		info.name[i] = mixer_devs[dev]->name[i];
-	info.name[i] = 0;
-	info.modify_counter = mixer_devs[dev]->modify_counter;
-
-	memcpy((&((char *) arg)[0]), (char *) &info, sizeof(info));
-	return 0;
-}
-
-static int
-get_old_mixer_info(int dev, caddr_t arg)
-{
-	_old_mixer_info info;
-	int             i;
-
-	if (dev < 0 || dev >= num_mixers)
-		return -ENXIO;
-
-	strcpy(info.id, mixer_devs[dev]->id);
-	for (i = 0; i < 32 && mixer_devs[dev]->name; i++)
-		info.name[i] = mixer_devs[dev]->name[i];
-	info.name[i] = 0;
-
-	memcpy((&((char *) arg)[0]), (char *) &info, sizeof(info));
-	return 0;
-}
-
-static int
-sound_mixer_ioctl(int mixdev,
-		  unsigned int cmd, caddr_t arg)
-{
-	if (cmd == SOUND_MIXER_INFO)
-		return get_mixer_info(mixdev, arg);
-	if (cmd == SOUND_OLD_MIXER_INFO)
-		return get_old_mixer_info(mixdev, arg);
-
-	if (_SIOC_DIR(cmd) & _SIOC_WRITE)
-		mixer_devs[mixdev]->modify_counter++;
-
-	return mixer_devs[mixdev]->ioctl(mixdev, cmd, arg);
-}
-
-int
-sound_ioctl_sw(int dev, struct fileinfo *file,
-	       unsigned int cmd, caddr_t arg)
-{
-	DEB(printk("sound_ioctl_sw(dev=%d, cmd=0x%x, arg=0x%x)\n", dev, cmd, arg));
-
-	if (cmd == OSS_GETVERSION)
-		return (*(int *) arg = SOUND_VERSION);
-
-
-	if (((cmd >> 8) & 0xff) == 'M' && num_mixers > 0)	/* Mixer ioctl */
-		if ((dev & 0x0f) != SND_DEV_CTL)
-		  {
-			  int             dtype = dev & 0x0f;
-			  int             mixdev;
-
-			  switch (dtype)
-			    {
-#ifdef CONFIG_AUDIO
-			    case SND_DEV_DSP:
-			    case SND_DEV_DSP16:
-			    case SND_DEV_AUDIO:
-				    mixdev = audio_devs[dev >> 4]->mixer_dev;
-				    if (mixdev < 0 || mixdev >= num_mixers)
-					    return -ENXIO;
-				    return sound_mixer_ioctl(mixdev, cmd, arg);
-				    break;
-#endif
-
-			    default:
-				    return sound_mixer_ioctl(dev, cmd, arg);
-			    }
-		  }
-	switch (dev & 0x0f)
-	  {
-
-	  case SND_DEV_CTL:
-		  if (cmd == SOUND_MIXER_GETLEVELS)
-			  return get_mixer_levels(arg);
-		  if (cmd == SOUND_MIXER_SETLEVELS)
-			  return set_mixer_levels(arg);
-
-		  if (!num_mixers)
-			  return -ENXIO;
-
-		  dev = dev >> 4;
-
-		  if (dev >= num_mixers)
-			  return -ENXIO;
-
-		  return sound_mixer_ioctl(dev, cmd, arg);
-		  break;
-
-#ifdef CONFIG_SEQUENCER
-	  case SND_DEV_SEQ:
-	  case SND_DEV_SEQ2:
-		  return sequencer_ioctl(dev, file, cmd, arg);
-		  break;
-#endif
-
-#ifdef CONFIG_AUDIO
-	  case SND_DEV_DSP:
-	  case SND_DEV_DSP16:
-	  case SND_DEV_AUDIO:
-		  return audio_ioctl(dev, file, cmd, arg);
-		  break;
-#endif
-
-#ifdef CONFIG_MIDI
-	  case SND_DEV_MIDIN:
-		  return MIDIbuf_ioctl(dev, file, cmd, arg);
-		  break;
-#endif
-
-	  }
-
-	return -EINVAL;
-}