[linux.git] / sound / oss / dev_table.c

/*
 * 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);
Commit	Line	Data
1da177e4	1	/*
f30c2269	2	* sound/oss/dev_table.c
1da177e4 LT	3	*
	4	* Device call tables.
	5	*
	6	*
	7	* Copyright (C) by Hannu Savolainen 1993-1997
	8	*
	9	* OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
	10	* Version 2 (June 1991). See the "COPYING" file distributed with this software
	11	* for more info.
	12	*/
	13
	14	#include <linux/init.h>
	15
1da177e4 LT	16	#include "sound_config.h"
1da177e4 LT	17
ece7f77b AB	18	struct audio_operations *audio_devs[MAX_AUDIO_DEV];
	19	EXPORT_SYMBOL(audio_devs);
	20
	21	int num_audiodevs;
	22	EXPORT_SYMBOL(num_audiodevs);
	23
	24	struct mixer_operations *mixer_devs[MAX_MIXER_DEV];
	25	EXPORT_SYMBOL(mixer_devs);
	26
	27	int num_mixers;
	28	EXPORT_SYMBOL(num_mixers);
	29
	30	struct synth_operations *synth_devs[MAX_SYNTH_DEV+MAX_MIDI_DEV];
	31	EXPORT_SYMBOL(synth_devs);
	32
	33	int num_synths;
	34
	35	struct midi_operations *midi_devs[MAX_MIDI_DEV];
	36	EXPORT_SYMBOL(midi_devs);
	37
	38	int num_midis;
	39	EXPORT_SYMBOL(num_midis);
	40
	41	struct sound_timer_operations *sound_timer_devs[MAX_TIMER_DEV] = {
	42	&default_sound_timer, NULL
	43	};
	44	EXPORT_SYMBOL(sound_timer_devs);
	45
	46	int num_sound_timers = 1;
	47
	48
1da177e4 LT	49	static int sound_alloc_audiodev(void);
	50
	51	int sound_install_audiodrv(int vers, char name, struct audio_driver driver,
	52	int driver_size, int flags, unsigned int format_mask,
	53	void *devc, int dma1, int dma2)
	54	{
	55	struct audio_driver *d;
	56	struct audio_operations *op;
	57	int num;
	58
	59	if (vers != AUDIO_DRIVER_VERSION \|\| driver_size > sizeof(struct audio_driver)) {
	60	printk(KERN_ERR "Sound: Incompatible audio driver for %s\n", name);
	61	return -(EINVAL);
	62	}
	63	num = sound_alloc_audiodev();
	64
	65	if (num == -1) {
	66	printk(KERN_ERR "sound: Too many audio drivers\n");
	67	return -(EBUSY);
	68	}
	69	d = (struct audio_driver *) (sound_mem_blocks[sound_nblocks] = vmalloc(sizeof(struct audio_driver)));
444c1953 DC	70	sound_nblocks++;
	71	if (sound_nblocks >= MAX_MEM_BLOCKS)
	72	sound_nblocks = MAX_MEM_BLOCKS - 1;
1da177e4	73
f724bd24	74	op = (struct audio_operations *) (sound_mem_blocks[sound_nblocks] = vzalloc(sizeof(struct audio_operations)));
444c1953 DC	75	sound_nblocks++;
	76	if (sound_nblocks >= MAX_MEM_BLOCKS)
	77	sound_nblocks = MAX_MEM_BLOCKS - 1;
1da177e4	78
1da177e4 LT	79	if (d == NULL \|\| op == NULL) {
	80	printk(KERN_ERR "Sound: Can't allocate driver for (%s)\n", name);
	81	sound_unload_audiodev(num);
	82	return -(ENOMEM);
	83	}
1da177e4 LT	84	init_waitqueue_head(&op->in_sleeper);
	85	init_waitqueue_head(&op->out_sleeper);
	86	init_waitqueue_head(&op->poll_sleeper);
	87	if (driver_size < sizeof(struct audio_driver))
	88	memset((char *) d, 0, sizeof(struct audio_driver));
	89
	90	memcpy((char ) d, (char ) driver, driver_size);
	91
	92	op->d = d;
	93	strlcpy(op->name, name, sizeof(op->name));
	94	op->flags = flags;
	95	op->format_mask = format_mask;
	96	op->devc = devc;
	97
	98	/*
	99	* Hardcoded defaults
	100	*/
	101	audio_devs[num] = op;
	102
	103	DMAbuf_init(num, dma1, dma2);
	104
	105	audio_init_devices();
	106	return num;
	107	}
ece7f77b	108	EXPORT_SYMBOL(sound_install_audiodrv);
1da177e4 LT	109
	110	int sound_install_mixer(int vers, char name, struct mixer_operations driver,
	111	int driver_size, void *devc)
	112	{
	113	struct mixer_operations *op;
	114
	115	int n = sound_alloc_mixerdev();
	116
	117	if (n == -1) {
	118	printk(KERN_ERR "Sound: Too many mixer drivers\n");
	119	return -EBUSY;
	120	}
	121	if (vers != MIXER_DRIVER_VERSION \|\|
	122	driver_size > sizeof(struct mixer_operations)) {
	123	printk(KERN_ERR "Sound: Incompatible mixer driver for %s\n", name);
	124	return -EINVAL;
	125	}
	126
	127	/* FIXME: This leaks a mixer_operations struct every time its called
	128	until you unload sound! */
	129
f724bd24	130	op = (struct mixer_operations *) (sound_mem_blocks[sound_nblocks] = vzalloc(sizeof(struct mixer_operations)));
444c1953 DC	131	sound_nblocks++;
	132	if (sound_nblocks >= MAX_MEM_BLOCKS)
	133	sound_nblocks = MAX_MEM_BLOCKS - 1;
1da177e4	134
1da177e4 LT	135	if (op == NULL) {
	136	printk(KERN_ERR "Sound: Can't allocate mixer driver for (%s)\n", name);
	137	return -ENOMEM;
	138	}
1da177e4 LT	139	memcpy((char ) op, (char ) driver, driver_size);
	140
	141	strlcpy(op->name, name, sizeof(op->name));
	142	op->devc = devc;
	143
	144	mixer_devs[n] = op;
	145	return n;
	146	}
ece7f77b	147	EXPORT_SYMBOL(sound_install_mixer);
1da177e4 LT	148
	149	void sound_unload_audiodev(int dev)
	150	{
	151	if (dev != -1) {
	152	DMAbuf_deinit(dev);
	153	audio_devs[dev] = NULL;
	154	unregister_sound_dsp((dev<<4)+3);
	155	}
	156	}
ece7f77b	157	EXPORT_SYMBOL(sound_unload_audiodev);
1da177e4 LT	158
	159	static int sound_alloc_audiodev(void)
	160	{
	161	int i = register_sound_dsp(&oss_sound_fops, -1);
	162	if(i==-1)
	163	return i;
	164	i>>=4;
	165	if(i>=num_audiodevs)
	166	num_audiodevs = i + 1;
	167	return i;
	168	}
	169
	170	int sound_alloc_mididev(void)
	171	{
	172	int i = register_sound_midi(&oss_sound_fops, -1);
	173	if(i==-1)
	174	return i;
	175	i>>=4;
	176	if(i>=num_midis)
	177	num_midis = i + 1;
	178	return i;
	179	}
ece7f77b	180	EXPORT_SYMBOL(sound_alloc_mididev);
1da177e4 LT	181
	182	int sound_alloc_synthdev(void)
	183	{
	184	int i;
	185
	186	for (i = 0; i < MAX_SYNTH_DEV; i++) {
	187	if (synth_devs[i] == NULL) {
	188	if (i >= num_synths)
	189	num_synths++;
	190	return i;
	191	}
	192	}
	193	return -1;
	194	}
ece7f77b	195	EXPORT_SYMBOL(sound_alloc_synthdev);
1da177e4 LT	196
	197	int sound_alloc_mixerdev(void)
	198	{
	199	int i = register_sound_mixer(&oss_sound_fops, -1);
	200	if(i==-1)
	201	return -1;
	202	i>>=4;
	203	if(i>=num_mixers)
	204	num_mixers = i + 1;
	205	return i;
	206	}
ece7f77b	207	EXPORT_SYMBOL(sound_alloc_mixerdev);
1da177e4 LT	208
	209	int sound_alloc_timerdev(void)
	210	{
	211	int i;
	212
	213	for (i = 0; i < MAX_TIMER_DEV; i++) {
	214	if (sound_timer_devs[i] == NULL) {
	215	if (i >= num_sound_timers)
	216	num_sound_timers++;
	217	return i;
	218	}
	219	}
	220	return -1;
	221	}
ece7f77b	222	EXPORT_SYMBOL(sound_alloc_timerdev);
1da177e4 LT	223
	224	void sound_unload_mixerdev(int dev)
	225	{
	226	if (dev != -1) {
	227	mixer_devs[dev] = NULL;
	228	unregister_sound_mixer(dev<<4);
	229	num_mixers--;
	230	}
	231	}
ece7f77b	232	EXPORT_SYMBOL(sound_unload_mixerdev);
1da177e4 LT	233
	234	void sound_unload_mididev(int dev)
	235	{
	236	if (dev != -1) {
	237	midi_devs[dev] = NULL;
	238	unregister_sound_midi((dev<<4)+2);
	239	}
	240	}
ece7f77b	241	EXPORT_SYMBOL(sound_unload_mididev);
1da177e4 LT	242
	243	void sound_unload_synthdev(int dev)
	244	{
	245	if (dev != -1)
	246	synth_devs[dev] = NULL;
	247	}
ece7f77b	248	EXPORT_SYMBOL(sound_unload_synthdev);
1da177e4 LT	249
	250	void sound_unload_timerdev(int dev)
	251	{
	252	if (dev != -1)
	253	sound_timer_devs[dev] = NULL;
	254	}
ece7f77b AB	255	EXPORT_SYMBOL(sound_unload_timerdev);
ece7f77b AB	256