--- /dev/null
+/*
+ * 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);
+
Code Review / kvmfornfv.git / blobdiff