Initial import

1 files changed, 256 insertions, 0 deletions

diff --git a/sound/oss/dev_table.c b/sound/oss/dev_table.c
new file mode 100644
index 000000000..6dad51596
--- /dev/null
+++ b/sound/oss/dev_table.c
@@ -0,0 +1,256 @@
+/*
+ * sound/oss/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/init.h>
+
+#include "sound_config.h"
+
+struct audio_operations *audio_devs[MAX_AUDIO_DEV];
+EXPORT_SYMBOL(audio_devs);
+
+int num_audiodevs;
+EXPORT_SYMBOL(num_audiodevs);
+
+struct mixer_operations *mixer_devs[MAX_MIXER_DEV];
+EXPORT_SYMBOL(mixer_devs);
+
+int num_mixers;
+EXPORT_SYMBOL(num_mixers);
+
+struct synth_operations *synth_devs[MAX_SYNTH_DEV+MAX_MIDI_DEV];
+EXPORT_SYMBOL(synth_devs);
+
+int num_synths;
+
+struct midi_operations *midi_devs[MAX_MIDI_DEV];
+EXPORT_SYMBOL(midi_devs);
+
+int num_midis;
+EXPORT_SYMBOL(num_midis);
+
+struct sound_timer_operations *sound_timer_devs[MAX_TIMER_DEV] = {
+	&default_sound_timer, NULL
+};
+EXPORT_SYMBOL(sound_timer_devs);
+
+int num_sound_timers = 1;
+
+
+static int sound_alloc_audiodev(void);
+
+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)
+{
+	struct audio_driver *d;
+	struct audio_operations *op;
+	int 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_nblocks++;
+	if (sound_nblocks >= MAX_MEM_BLOCKS)
+		sound_nblocks = MAX_MEM_BLOCKS - 1;
+
+	op = (struct audio_operations *) (sound_mem_blocks[sound_nblocks] = vzalloc(sizeof(struct audio_operations)));
+	sound_nblocks++;
+	if (sound_nblocks >= MAX_MEM_BLOCKS)
+		sound_nblocks = MAX_MEM_BLOCKS - 1;
+
+	if (d == NULL || op == NULL) {
+		printk(KERN_ERR "Sound: Can't allocate driver for (%s)\n", name);
+		sound_unload_audiodev(num);
+		return -ENOMEM;
+	}
+	init_waitqueue_head(&op->in_sleeper);
+	init_waitqueue_head(&op->out_sleeper);	
+	init_waitqueue_head(&op->poll_sleeper);
+	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;
+	strlcpy(op->name, name, sizeof(op->name));
+	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;
+}
+EXPORT_SYMBOL(sound_install_audiodrv);
+
+int sound_install_mixer(int vers, char *name, struct mixer_operations *driver,
+	int driver_size, void *devc)
+{
+	struct mixer_operations *op;
+
+	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;
+	}
+	
+	/* FIXME: This leaks a mixer_operations struct every time its called
+	   until you unload sound! */
+	   
+	op = (struct mixer_operations *) (sound_mem_blocks[sound_nblocks] = vzalloc(sizeof(struct mixer_operations)));
+	sound_nblocks++;
+	if (sound_nblocks >= MAX_MEM_BLOCKS)
+		sound_nblocks = MAX_MEM_BLOCKS - 1;
+
+	if (op == NULL) {
+		printk(KERN_ERR "Sound: Can't allocate mixer driver for (%s)\n", name);
+		return -ENOMEM;
+	}
+	memcpy((char *) op, (char *) driver, driver_size);
+
+	strlcpy(op->name, name, sizeof(op->name));
+	op->devc = devc;
+
+	mixer_devs[n] = op;
+	return n;
+}
+EXPORT_SYMBOL(sound_install_mixer);
+
+void sound_unload_audiodev(int dev)
+{
+	if (dev != -1) {
+		DMAbuf_deinit(dev);
+		audio_devs[dev] = NULL;
+		unregister_sound_dsp((dev<<4)+3);
+	}
+}
+EXPORT_SYMBOL(sound_unload_audiodev);
+
+static int sound_alloc_audiodev(void)
+{ 
+	int i = register_sound_dsp(&oss_sound_fops, -1);
+	if(i==-1)
+		return i;
+	i>>=4;
+	if(i>=num_audiodevs)
+		num_audiodevs = i + 1;
+	return i;
+}
+
+int sound_alloc_mididev(void)
+{
+	int i = register_sound_midi(&oss_sound_fops, -1);
+	if(i==-1)
+		return i;
+	i>>=4;
+	if(i>=num_midis)
+		num_midis = i + 1;
+	return i;
+}
+EXPORT_SYMBOL(sound_alloc_mididev);
+
+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;
+}
+EXPORT_SYMBOL(sound_alloc_synthdev);
+
+int sound_alloc_mixerdev(void)
+{
+	int i = register_sound_mixer(&oss_sound_fops, -1);
+	if(i==-1)
+		return -1;
+	i>>=4;
+	if(i>=num_mixers)
+		num_mixers = i + 1;
+	return i;
+}
+EXPORT_SYMBOL(sound_alloc_mixerdev);
+
+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;
+}
+EXPORT_SYMBOL(sound_alloc_timerdev);
+
+void sound_unload_mixerdev(int dev)
+{
+	if (dev != -1) {
+		mixer_devs[dev] = NULL;
+		unregister_sound_mixer(dev<<4);
+		num_mixers--;
+	}
+}
+EXPORT_SYMBOL(sound_unload_mixerdev);
+
+void sound_unload_mididev(int dev)
+{
+	if (dev != -1) {
+		midi_devs[dev] = NULL;
+		unregister_sound_midi((dev<<4)+2);
+	}
+}
+EXPORT_SYMBOL(sound_unload_mididev);
+
+void sound_unload_synthdev(int dev)
+{
+	if (dev != -1)
+		synth_devs[dev] = NULL;
+}
+EXPORT_SYMBOL(sound_unload_synthdev);
+
+void sound_unload_timerdev(int dev)
+{
+	if (dev != -1)
+		sound_timer_devs[dev] = NULL;
+}
+EXPORT_SYMBOL(sound_unload_timerdev);
+