[net-next-2.6.git] / sound / oss / soundcard.c

/*
 * linux/sound/oss/soundcard.c
 *
 * Sound card driver for Linux
 *
 *
 * 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.
 *
 *
 * Thomas Sailer     : ioctl code reworked (vmalloc/vfree removed)
 *                   integrated sound_switch.c
 * Stefan Reinauer   : integrated /proc/sound (equals to /dev/sndstat,
 *                   which should disappear in the near future)
 * Eric Dumas	     : devfs support (22-Jan-98) <dumas@linux.eu.org> with
 *                   fixups by C. Scott Ananian <cananian@alumni.princeton.edu>
 * Richard Gooch     : moved common (non OSS-specific) devices to sound_core.c
 * Rob Riggs	     : Added persistent DMA buffers support (1998/10/17)
 * Christoph Hellwig : Some cleanup work (2000/03/01)
 */


#include "sound_config.h"
#include <linux/init.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/signal.h>
#include <linux/fcntl.h>
#include <linux/ctype.h>
#include <linux/stddef.h>
#include <linux/kmod.h>
#include <linux/kernel.h>
#include <asm/dma.h>
#include <asm/io.h>
#include <linux/wait.h>
#include <linux/ioport.h>
#include <linux/major.h>
#include <linux/delay.h>
#include <linux/proc_fs.h>
#include <linux/smp_lock.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/device.h>

/*
 * This ought to be moved into include/asm/dma.h
 */
#ifndef valid_dma
#define valid_dma(n) ((n) >= 0 && (n) < MAX_DMA_CHANNELS && (n) != 4)
#endif

/*
 * Table for permanently allocated memory (used when unloading the module)
 */
void *          sound_mem_blocks[MAX_MEM_BLOCKS];
int             sound_nblocks = 0;

/* Persistent DMA buffers */
#ifdef CONFIG_SOUND_DMAP
int             sound_dmap_flag = 1;
#else
int             sound_dmap_flag = 0;
#endif

static char     dma_alloc_map[MAX_DMA_CHANNELS];

#define DMA_MAP_UNAVAIL		0
#define DMA_MAP_FREE		1
#define DMA_MAP_BUSY		2


unsigned long seq_time = 0;	/* Time for /dev/sequencer */
extern struct class *sound_class;

/*
 * Table for configurable mixer volume handling
 */
static mixer_vol_table mixer_vols[MAX_MIXER_DEV];
static int num_mixer_volumes;

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(KERN_ERR "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;
}
EXPORT_SYMBOL(load_mixer_volumes);

static int set_mixer_levels(void __user * arg)
{
        /* mixer_vol_table is 174 bytes, so IMHO no reason to not allocate it on the stack */
	mixer_vol_table buf;   

	if (__copy_from_user(&buf, arg, sizeof(buf)))
		return -EFAULT;
	load_mixer_volumes(buf.name, buf.levels, 0);
	if (__copy_to_user(arg, &buf, sizeof(buf)))
		return -EFAULT;
	return 0;
}

static int get_mixer_levels(void __user * arg)
{
	int n;

	if (__get_user(n, (int __user *)(&(((mixer_vol_table __user *)arg)->num))))
		return -EFAULT;
	if (n < 0 || n >= num_mixer_volumes)
		return -EINVAL;
	if (__copy_to_user(arg, &mixer_vols[n], sizeof(mixer_vol_table)))
		return -EFAULT;
	return 0;
}

/* 4K page size but our output routines use some slack for overruns */
#define PROC_BLOCK_SIZE (3*1024)

static ssize_t sound_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
	int dev = iminor(file->f_path.dentry->d_inode);
	int ret = -EINVAL;

	/*
	 *	The OSS drivers aren't remotely happy without this locking,
	 *	and unless someone fixes them when they are about to bite the
	 *	big one anyway, we might as well bandage here..
	 */
	 
	lock_kernel();
	
	DEB(printk("sound_read(dev=%d, count=%d)\n", dev, count));
	switch (dev & 0x0f) {
	case SND_DEV_DSP:
	case SND_DEV_DSP16:
	case SND_DEV_AUDIO:
		ret = audio_read(dev, file, buf, count);
		break;

	case SND_DEV_SEQ:
	case SND_DEV_SEQ2:
		ret = sequencer_read(dev, file, buf, count);
		break;

	case SND_DEV_MIDIN:
		ret = MIDIbuf_read(dev, file, buf, count);
	}
	unlock_kernel();
	return ret;
}

static ssize_t sound_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
{
	int dev = iminor(file->f_path.dentry->d_inode);
	int ret = -EINVAL;
	
	lock_kernel();
	DEB(printk("sound_write(dev=%d, count=%d)\n", dev, count));
	switch (dev & 0x0f) {
	case SND_DEV_SEQ:
	case SND_DEV_SEQ2:
		ret =  sequencer_write(dev, file, buf, count);
		break;

	case SND_DEV_DSP:
	case SND_DEV_DSP16:
	case SND_DEV_AUDIO:
		ret = audio_write(dev, file, buf, count);
		break;

	case SND_DEV_MIDIN:
		ret =  MIDIbuf_write(dev, file, buf, count);
		break;
	}
	unlock_kernel();
	return ret;
}

static int sound_open(struct inode *inode, struct file *file)
{
	int dev = iminor(inode);
	int retval;

	DEB(printk("sound_open(dev=%d)\n", dev));
	if ((dev >= SND_NDEVS) || (dev < 0)) {
		printk(KERN_ERR "Invalid minor device %d\n", dev);
		return -ENXIO;
	}
	switch (dev & 0x0f) {
	case SND_DEV_CTL:
		dev >>= 4;
		if (dev >= 0 && dev < MAX_MIXER_DEV && mixer_devs[dev] == NULL) {
			request_module("mixer%d", dev);
		}
		if (dev && (dev >= num_mixers || mixer_devs[dev] == NULL))
			return -ENXIO;
	
		if (!try_module_get(mixer_devs[dev]->owner))
			return -ENXIO;
		break;

	case SND_DEV_SEQ:
	case SND_DEV_SEQ2:
		if ((retval = sequencer_open(dev, file)) < 0)
			return retval;
		break;

	case SND_DEV_MIDIN:
		if ((retval = MIDIbuf_open(dev, file)) < 0)
			return retval;
		break;

	case SND_DEV_DSP:
	case SND_DEV_DSP16:
	case SND_DEV_AUDIO:
		if ((retval = audio_open(dev, file)) < 0)
			return retval;
		break;

	default:
		printk(KERN_ERR "Invalid minor device %d\n", dev);
		return -ENXIO;
	}

	return 0;
}

static int sound_release(struct inode *inode, struct file *file)
{
	int dev = iminor(inode);

	lock_kernel();
	DEB(printk("sound_release(dev=%d)\n", dev));
	switch (dev & 0x0f) {
	case SND_DEV_CTL:
		module_put(mixer_devs[dev >> 4]->owner);
		break;
		
	case SND_DEV_SEQ:
	case SND_DEV_SEQ2:
		sequencer_release(dev, file);
		break;

	case SND_DEV_MIDIN:
		MIDIbuf_release(dev, file);
		break;

	case SND_DEV_DSP:
	case SND_DEV_DSP16:
	case SND_DEV_AUDIO:
		audio_release(dev, file);
		break;

	default:
		printk(KERN_ERR "Sound error: Releasing unknown device 0x%02x\n", dev);
	}
	unlock_kernel();

	return 0;
}

static int get_mixer_info(int dev, void __user *arg)
{
	mixer_info info;
	memset(&info, 0, sizeof(info));
	strlcpy(info.id, mixer_devs[dev]->id, sizeof(info.id));
	strlcpy(info.name, mixer_devs[dev]->name, sizeof(info.name));
	info.modify_counter = mixer_devs[dev]->modify_counter;
	if (__copy_to_user(arg, &info,  sizeof(info)))
		return -EFAULT;
	return 0;
}

static int get_old_mixer_info(int dev, void __user *arg)
{
	_old_mixer_info info;
	memset(&info, 0, sizeof(info));
 	strlcpy(info.id, mixer_devs[dev]->id, sizeof(info.id));
 	strlcpy(info.name, mixer_devs[dev]->name, sizeof(info.name));
 	if (copy_to_user(arg, &info,  sizeof(info)))
		return -EFAULT;
	return 0;
}

static int sound_mixer_ioctl(int mixdev, unsigned int cmd, void __user *arg)
{
 	if (mixdev < 0 || mixdev >= MAX_MIXER_DEV)
 		return -ENXIO;
 	/* Try to load the mixer... */
 	if (mixer_devs[mixdev] == NULL) {
 		request_module("mixer%d", mixdev);
 	}
 	if (mixdev >= num_mixers || !mixer_devs[mixdev])
 		return -ENXIO;
	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++;
	if (!mixer_devs[mixdev]->ioctl)
		return -EINVAL;
	return mixer_devs[mixdev]->ioctl(mixdev, cmd, arg);
}

static long sound_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	int len = 0, dtype;
	int dev = iminor(file->f_dentry->d_inode);
	long ret = -EINVAL;
	void __user *p = (void __user *)arg;

	if (_SIOC_DIR(cmd) != _SIOC_NONE && _SIOC_DIR(cmd) != 0) {
		/*
		 * Have to validate the address given by the process.
		 */
		len = _SIOC_SIZE(cmd);
		if (len < 1 || len > 65536 || !p)
			return -EFAULT;
		if (_SIOC_DIR(cmd) & _SIOC_WRITE)
			if (!access_ok(VERIFY_READ, p, len))
				return -EFAULT;
		if (_SIOC_DIR(cmd) & _SIOC_READ)
			if (!access_ok(VERIFY_WRITE, p, len))
				return -EFAULT;
	}
	DEB(printk("sound_ioctl(dev=%d, cmd=0x%x, arg=0x%x)\n", dev, cmd, arg));
	if (cmd == OSS_GETVERSION)
		return __put_user(SOUND_VERSION, (int __user *)p);
	
	lock_kernel();
	if (_IOC_TYPE(cmd) == 'M' && num_mixers > 0 &&   /* Mixer ioctl */
	    (dev & 0x0f) != SND_DEV_CTL) {              
		dtype = dev & 0x0f;
		switch (dtype) {
		case SND_DEV_DSP:
		case SND_DEV_DSP16:
		case SND_DEV_AUDIO:
			ret = sound_mixer_ioctl(audio_devs[dev >> 4]->mixer_dev,
						 cmd, p);
			break;			
		default:
			ret = sound_mixer_ioctl(dev >> 4, cmd, p);
			break;
		}
		unlock_kernel();
		return ret;
	}

	switch (dev & 0x0f) {
	case SND_DEV_CTL:
		if (cmd == SOUND_MIXER_GETLEVELS)
			ret = get_mixer_levels(p);
		else if (cmd == SOUND_MIXER_SETLEVELS)
			ret = set_mixer_levels(p);
		else
			ret = sound_mixer_ioctl(dev >> 4, cmd, p);
		break;

	case SND_DEV_SEQ:
	case SND_DEV_SEQ2:
		ret = sequencer_ioctl(dev, file, cmd, p);
		break;

	case SND_DEV_DSP:
	case SND_DEV_DSP16:
	case SND_DEV_AUDIO:
		return audio_ioctl(dev, file, cmd, p);
		break;

	case SND_DEV_MIDIN:
		return MIDIbuf_ioctl(dev, file, cmd, p);
		break;

	}
	unlock_kernel();
	return ret;
}

static unsigned int sound_poll(struct file *file, poll_table * wait)
{
	struct inode *inode = file->f_path.dentry->d_inode;
	int dev = iminor(inode);

	DEB(printk("sound_poll(dev=%d)\n", dev));
	switch (dev & 0x0f) {
	case SND_DEV_SEQ:
	case SND_DEV_SEQ2:
		return sequencer_poll(dev, file, wait);

	case SND_DEV_MIDIN:
		return MIDIbuf_poll(dev, file, wait);

	case SND_DEV_DSP:
	case SND_DEV_DSP16:
	case SND_DEV_AUDIO:
		return DMAbuf_poll(file, dev >> 4, wait);
	}
	return 0;
}

static int sound_mmap(struct file *file, struct vm_area_struct *vma)
{
	int dev_class;
	unsigned long size;
	struct dma_buffparms *dmap = NULL;
	int dev = iminor(file->f_path.dentry->d_inode);

	dev_class = dev & 0x0f;
	dev >>= 4;

	if (dev_class != SND_DEV_DSP && dev_class != SND_DEV_DSP16 && dev_class != SND_DEV_AUDIO) {
		printk(KERN_ERR "Sound: mmap() not supported for other than audio devices\n");
		return -EINVAL;
	}
	lock_kernel();
	if (vma->vm_flags & VM_WRITE)	/* Map write and read/write to the output buf */
		dmap = audio_devs[dev]->dmap_out;
	else if (vma->vm_flags & VM_READ)
		dmap = audio_devs[dev]->dmap_in;
	else {
		printk(KERN_ERR "Sound: Undefined mmap() access\n");
		unlock_kernel();
		return -EINVAL;
	}

	if (dmap == NULL) {
		printk(KERN_ERR "Sound: mmap() error. dmap == NULL\n");
		unlock_kernel();
		return -EIO;
	}
	if (dmap->raw_buf == NULL) {
		printk(KERN_ERR "Sound: mmap() called when raw_buf == NULL\n");
		unlock_kernel();
		return -EIO;
	}
	if (dmap->mapping_flags) {
		printk(KERN_ERR "Sound: mmap() called twice for the same DMA buffer\n");
		unlock_kernel();
		return -EIO;
	}
	if (vma->vm_pgoff != 0) {
		printk(KERN_ERR "Sound: mmap() offset must be 0.\n");
		unlock_kernel();
		return -EINVAL;
	}
	size = vma->vm_end - vma->vm_start;

	if (size != dmap->bytes_in_use) {
		printk(KERN_WARNING "Sound: mmap() size = %ld. Should be %d\n", size, dmap->bytes_in_use);
	}
	if (remap_pfn_range(vma, vma->vm_start,
			virt_to_phys(dmap->raw_buf) >> PAGE_SHIFT,
			vma->vm_end - vma->vm_start, vma->vm_page_prot)) {
		unlock_kernel();
		return -EAGAIN;
	}

	dmap->mapping_flags |= DMA_MAP_MAPPED;

	if( audio_devs[dev]->d->mmap)
		audio_devs[dev]->d->mmap(dev);

	memset(dmap->raw_buf,
	       dmap->neutral_byte,
	       dmap->bytes_in_use);
	unlock_kernel();
	return 0;
}

const struct file_operations oss_sound_fops = {
	.owner		= THIS_MODULE,
	.llseek		= no_llseek,
	.read		= sound_read,
	.write		= sound_write,
	.poll		= sound_poll,
	.unlocked_ioctl	= sound_ioctl,
	.mmap		= sound_mmap,
	.open		= sound_open,
	.release	= sound_release,
};

/*
 *	Create the required special subdevices
 */
 
static int create_special_devices(void)
{
	int seq1,seq2;
	seq1=register_sound_special(&oss_sound_fops, 1);
	if(seq1==-1)
		goto bad;
	seq2=register_sound_special(&oss_sound_fops, 8);
	if(seq2!=-1)
		return 0;
	unregister_sound_special(1);
bad:
	return -1;
}


/* These device names follow the official Linux device list,
 * Documentation/devices.txt.  Let us know if there are other
 * common names we should support for compatibility.
 * Only those devices not created by the generic code in sound_core.c are
 * registered here.
 */
static const struct {
	unsigned short minor;
	char *name;
	umode_t mode;
	int *num;
} dev_list[] = { /* list of minor devices */
/* seems to be some confusion here -- this device is not in the device list */
	{SND_DEV_DSP16,     "dspW",	 S_IWUGO | S_IRUSR | S_IRGRP,
	 &num_audiodevs},
	{SND_DEV_AUDIO,     "audio",	 S_IWUGO | S_IRUSR | S_IRGRP,
	 &num_audiodevs},
};

static int dmabuf;
static int dmabug;

module_param(dmabuf, int, 0444);
module_param(dmabug, int, 0444);

static int __init oss_init(void)
{
	int             err;
	int i, j;
	
#ifdef CONFIG_PCI
	if(dmabug)
		isa_dma_bridge_buggy = dmabug;
#endif

	err = create_special_devices();
	if (err) {
		printk(KERN_ERR "sound: driver already loaded/included in kernel\n");
		return err;
	}

	/* Protecting the innocent */
	sound_dmap_flag = (dmabuf > 0 ? 1 : 0);

	for (i = 0; i < ARRAY_SIZE(dev_list); i++) {
		device_create(sound_class, NULL,
			      MKDEV(SOUND_MAJOR, dev_list[i].minor), NULL,
			      "%s", dev_list[i].name);

		if (!dev_list[i].num)
			continue;

		for (j = 1; j < *dev_list[i].num; j++)
			device_create(sound_class, NULL,
				      MKDEV(SOUND_MAJOR,
					    dev_list[i].minor + (j*0x10)),
				      NULL, "%s%d", dev_list[i].name, j);
	}

	if (sound_nblocks >= MAX_MEM_BLOCKS - 1)
		printk(KERN_ERR "Sound warning: Deallocation table was too small.\n");
	
	return 0;
}

static void __exit oss_cleanup(void)
{
	int i, j;

	for (i = 0; i < ARRAY_SIZE(dev_list); i++) {
		device_destroy(sound_class, MKDEV(SOUND_MAJOR, dev_list[i].minor));
		if (!dev_list[i].num)
			continue;
		for (j = 1; j < *dev_list[i].num; j++)
			device_destroy(sound_class, MKDEV(SOUND_MAJOR, dev_list[i].minor + (j*0x10)));
	}
	
	unregister_sound_special(1);
	unregister_sound_special(8);

	sound_stop_timer();

	sequencer_unload();

	for (i = 0; i < MAX_DMA_CHANNELS; i++)
		if (dma_alloc_map[i] != DMA_MAP_UNAVAIL) {
			printk(KERN_ERR "Sound: Hmm, DMA%d was left allocated - fixed\n", i);
			sound_free_dma(i);
		}

	for (i = 0; i < sound_nblocks; i++)
		vfree(sound_mem_blocks[i]);

}

module_init(oss_init);
module_exit(oss_cleanup);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("OSS Sound subsystem");
MODULE_AUTHOR("Hannu Savolainen, et al.");


int sound_alloc_dma(int chn, char *deviceID)
{
	int err;

	if ((err = request_dma(chn, deviceID)) != 0)
		return err;

	dma_alloc_map[chn] = DMA_MAP_FREE;

	return 0;
}
EXPORT_SYMBOL(sound_alloc_dma);

int sound_open_dma(int chn, char *deviceID)
{
	if (!valid_dma(chn)) {
		printk(KERN_ERR "sound_open_dma: Invalid DMA channel %d\n", chn);
		return 1;
	}

	if (dma_alloc_map[chn] != DMA_MAP_FREE) {
		printk("sound_open_dma: DMA channel %d busy or not allocated (%d)\n", chn, dma_alloc_map[chn]);
		return 1;
	}
	dma_alloc_map[chn] = DMA_MAP_BUSY;
	return 0;
}
EXPORT_SYMBOL(sound_open_dma);

void sound_free_dma(int chn)
{
	if (dma_alloc_map[chn] == DMA_MAP_UNAVAIL) {
		/* printk( "sound_free_dma: Bad access to DMA channel %d\n",  chn); */
		return;
	}
	free_dma(chn);
	dma_alloc_map[chn] = DMA_MAP_UNAVAIL;
}
EXPORT_SYMBOL(sound_free_dma);

void sound_close_dma(int chn)
{
	if (dma_alloc_map[chn] != DMA_MAP_BUSY) {
		printk(KERN_ERR "sound_close_dma: Bad access to DMA channel %d\n", chn);
		return;
	}
	dma_alloc_map[chn] = DMA_MAP_FREE;
}
EXPORT_SYMBOL(sound_close_dma);

static void do_sequencer_timer(unsigned long dummy)
{
	sequencer_timer(0);
}


static DEFINE_TIMER(seq_timer, do_sequencer_timer, 0, 0);

void request_sound_timer(int count)
{
	extern unsigned long seq_time;

	if (count < 0) {
		seq_timer.expires = (-count) + jiffies;
		add_timer(&seq_timer);
		return;
	}
	count += seq_time;

	count -= jiffies;

	if (count < 1)
		count = 1;

	seq_timer.expires = (count) + jiffies;
	add_timer(&seq_timer);
}

void sound_stop_timer(void)
{
	del_timer(&seq_timer);
}

void conf_printf(char *name, struct address_info *hw_config)
{
#ifndef CONFIG_SOUND_TRACEINIT
	return;
#else
	printk("<%s> at 0x%03x", name, hw_config->io_base);

	if (hw_config->irq)
		printk(" irq %d", (hw_config->irq > 0) ? hw_config->irq : -hw_config->irq);

	if (hw_config->dma != -1 || hw_config->dma2 != -1)
	{
		printk(" dma %d", hw_config->dma);
		if (hw_config->dma2 != -1)
			printk(",%d", hw_config->dma2);
	}
	printk("\n");
#endif
}
EXPORT_SYMBOL(conf_printf);

void conf_printf2(char *name, int base, int irq, int dma, int dma2)
{
#ifndef CONFIG_SOUND_TRACEINIT
	return;
#else
	printk("<%s> at 0x%03x", name, base);

	if (irq)
		printk(" irq %d", (irq > 0) ? irq : -irq);

	if (dma != -1 || dma2 != -1)
	{
		  printk(" dma %d", dma);
		  if (dma2 != -1)
			  printk(",%d", dma2);
	}
	printk("\n");
#endif
}
EXPORT_SYMBOL(conf_printf2);
Commit	Line	Data
1da177e4	1	/*
f30c2269	2	* linux/sound/oss/soundcard.c
1da177e4 LT	3	*
	4	* Sound card driver for Linux
	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	* Thomas Sailer : ioctl code reworked (vmalloc/vfree removed)
	15	* integrated sound_switch.c
	16	* Stefan Reinauer : integrated /proc/sound (equals to /dev/sndstat,
	17	* which should disappear in the near future)
	18	* Eric Dumas : devfs support (22-Jan-98) <dumas@linux.eu.org> with
	19	* fixups by C. Scott Ananian <cananian@alumni.princeton.edu>
	20	* Richard Gooch : moved common (non OSS-specific) devices to sound_core.c
	21	* Rob Riggs : Added persistent DMA buffers support (1998/10/17)
	22	* Christoph Hellwig : Some cleanup work (2000/03/01)
	23	*/
	24
1da177e4 LT	25
	26	#include "sound_config.h"
	27	#include <linux/init.h>
	28	#include <linux/types.h>
	29	#include <linux/errno.h>
	30	#include <linux/signal.h>
	31	#include <linux/fcntl.h>
	32	#include <linux/ctype.h>
	33	#include <linux/stddef.h>
	34	#include <linux/kmod.h>
b322f409	35	#include <linux/kernel.h>
1da177e4 LT	36	#include <asm/dma.h>
	37	#include <asm/io.h>
	38	#include <linux/wait.h>
1da177e4	39	#include <linux/ioport.h>
1da177e4 LT	40	#include <linux/major.h>
	41	#include <linux/delay.h>
	42	#include <linux/proc_fs.h>
	43	#include <linux/smp_lock.h>
	44	#include <linux/module.h>
f23f6e08	45	#include <linux/mm.h>
6473d160	46	#include <linux/device.h>
1da177e4 LT	47
	48	/*
	49	* This ought to be moved into include/asm/dma.h
	50	*/
	51	#ifndef valid_dma
	52	#define valid_dma(n) ((n) >= 0 && (n) < MAX_DMA_CHANNELS && (n) != 4)
	53	#endif
	54
	55	/*
	56	* Table for permanently allocated memory (used when unloading the module)
	57	*/
444c1953	58	void * sound_mem_blocks[MAX_MEM_BLOCKS];
1da177e4 LT	59	int sound_nblocks = 0;
	60
	61	/* Persistent DMA buffers */
	62	#ifdef CONFIG_SOUND_DMAP
	63	int sound_dmap_flag = 1;
	64	#else
	65	int sound_dmap_flag = 0;
	66	#endif
	67
	68	static char dma_alloc_map[MAX_DMA_CHANNELS];
	69
	70	#define DMA_MAP_UNAVAIL 0
	71	#define DMA_MAP_FREE 1
	72	#define DMA_MAP_BUSY 2
	73
	74
	75	unsigned long seq_time = 0; /* Time for /dev/sequencer */
619e666b	76	extern struct class *sound_class;
1da177e4 LT	77
	78	/*
	79	* Table for configurable mixer volume handling
	80	*/
	81	static mixer_vol_table mixer_vols[MAX_MIXER_DEV];
	82	static int num_mixer_volumes;
	83
	84	int load_mixer_volumes(char name, int *levels, int present)
	85	{
	86	int i, n;
	87
	88	for (i = 0; i < num_mixer_volumes; i++) {
	89	if (strcmp(name, mixer_vols[i].name) == 0) {
	90	if (present)
	91	mixer_vols[i].num = i;
	92	return mixer_vols[i].levels;
	93	}
	94	}
	95	if (num_mixer_volumes >= MAX_MIXER_DEV) {
	96	printk(KERN_ERR "Sound: Too many mixers (%s)\n", name);
	97	return levels;
	98	}
	99	n = num_mixer_volumes++;
	100
	101	strcpy(mixer_vols[n].name, name);
	102
	103	if (present)
	104	mixer_vols[n].num = n;
	105	else
	106	mixer_vols[n].num = -1;
	107
	108	for (i = 0; i < 32; i++)
	109	mixer_vols[n].levels[i] = levels[i];
	110	return mixer_vols[n].levels;
	111	}
ece7f77b	112	EXPORT_SYMBOL(load_mixer_volumes);
1da177e4 LT	113
	114	static int set_mixer_levels(void __user * arg)
	115	{
	116	/* mixer_vol_table is 174 bytes, so IMHO no reason to not allocate it on the stack */
	117	mixer_vol_table buf;
	118
	119	if (__copy_from_user(&buf, arg, sizeof(buf)))
	120	return -EFAULT;
	121	load_mixer_volumes(buf.name, buf.levels, 0);
	122	if (__copy_to_user(arg, &buf, sizeof(buf)))
	123	return -EFAULT;
	124	return 0;
	125	}
	126
	127	static int get_mixer_levels(void __user * arg)
	128	{
	129	int n;
	130
	131	if (__get_user(n, (int __user )(&(((mixer_vol_table __user )arg)->num))))
	132	return -EFAULT;
	133	if (n < 0 \|\| n >= num_mixer_volumes)
	134	return -EINVAL;
	135	if (__copy_to_user(arg, &mixer_vols[n], sizeof(mixer_vol_table)))
	136	return -EFAULT;
	137	return 0;
	138	}
	139
	140	/* 4K page size but our output routines use some slack for overruns */
	141	#define PROC_BLOCK_SIZE (3*1024)
	142
	143	static ssize_t sound_read(struct file file, char __user buf, size_t count, loff_t *ppos)
	144	{
7bc56323	145	int dev = iminor(file->f_path.dentry->d_inode);
1da177e4 LT	146	int ret = -EINVAL;
	147
	148	/*
	149	* The OSS drivers aren't remotely happy without this locking,
	150	* and unless someone fixes them when they are about to bite the
	151	* big one anyway, we might as well bandage here..
	152	*/
	153
	154	lock_kernel();
	155
	156	DEB(printk("sound_read(dev=%d, count=%d)\n", dev, count));
	157	switch (dev & 0x0f) {
	158	case SND_DEV_DSP:
	159	case SND_DEV_DSP16:
	160	case SND_DEV_AUDIO:
	161	ret = audio_read(dev, file, buf, count);
	162	break;
	163
	164	case SND_DEV_SEQ:
	165	case SND_DEV_SEQ2:
	166	ret = sequencer_read(dev, file, buf, count);
	167	break;
	168
	169	case SND_DEV_MIDIN:
	170	ret = MIDIbuf_read(dev, file, buf, count);
	171	}
	172	unlock_kernel();
	173	return ret;
	174	}
	175
	176	static ssize_t sound_write(struct file file, const char __user buf, size_t count, loff_t *ppos)
	177	{
7bc56323	178	int dev = iminor(file->f_path.dentry->d_inode);
1da177e4 LT	179	int ret = -EINVAL;
	180
	181	lock_kernel();
	182	DEB(printk("sound_write(dev=%d, count=%d)\n", dev, count));
	183	switch (dev & 0x0f) {
	184	case SND_DEV_SEQ:
	185	case SND_DEV_SEQ2:
	186	ret = sequencer_write(dev, file, buf, count);
	187	break;
	188
	189	case SND_DEV_DSP:
	190	case SND_DEV_DSP16:
	191	case SND_DEV_AUDIO:
	192	ret = audio_write(dev, file, buf, count);
	193	break;
	194
	195	case SND_DEV_MIDIN:
	196	ret = MIDIbuf_write(dev, file, buf, count);
	197	break;
	198	}
	199	unlock_kernel();
	200	return ret;
	201	}
	202
	203	static int sound_open(struct inode inode, struct file file)
	204	{
	205	int dev = iminor(inode);
	206	int retval;
	207
	208	DEB(printk("sound_open(dev=%d)\n", dev));
	209	if ((dev >= SND_NDEVS) \|\| (dev < 0)) {
	210	printk(KERN_ERR "Invalid minor device %d\n", dev);
	211	return -ENXIO;
	212	}
	213	switch (dev & 0x0f) {
	214	case SND_DEV_CTL:
	215	dev >>= 4;
	216	if (dev >= 0 && dev < MAX_MIXER_DEV && mixer_devs[dev] == NULL) {
	217	request_module("mixer%d", dev);
	218	}
	219	if (dev && (dev >= num_mixers \|\| mixer_devs[dev] == NULL))
	220	return -ENXIO;
	221
	222	if (!try_module_get(mixer_devs[dev]->owner))
	223	return -ENXIO;
	224	break;
	225
	226	case SND_DEV_SEQ:
	227	case SND_DEV_SEQ2:
	228	if ((retval = sequencer_open(dev, file)) < 0)
	229	return retval;
	230	break;
	231
	232	case SND_DEV_MIDIN:
	233	if ((retval = MIDIbuf_open(dev, file)) < 0)
	234	return retval;
	235	break;
	236
	237	case SND_DEV_DSP:
	238	case SND_DEV_DSP16:
	239	case SND_DEV_AUDIO:
	240	if ((retval = audio_open(dev, file)) < 0)
	241	return retval;
	242	break;
243
244	default:
245	printk(KERN_ERR "Invalid minor device %d\n", dev);
246	return -ENXIO;
247	}
248
249	return 0;
250	}
251
252	static int sound_release(struct inode inode, struct file file)
253	{
254	int dev = iminor(inode);
255
256	lock_kernel();
257	DEB(printk("sound_release(dev=%d)\n", dev));
258	switch (dev & 0x0f) {
259	case SND_DEV_CTL:
260	module_put(mixer_devs[dev >> 4]->owner);
261	break;
262
263	case SND_DEV_SEQ:
264	case SND_DEV_SEQ2:
265	sequencer_release(dev, file);
266	break;
267
268	case SND_DEV_MIDIN:
269	MIDIbuf_release(dev, file);
270	break;
271
272	case SND_DEV_DSP:
273	case SND_DEV_DSP16:
274	case SND_DEV_AUDIO:
275	audio_release(dev, file);
276	break;
277
278	default:
279	printk(KERN_ERR "Sound error: Releasing unknown device 0x%02x\n", dev);
280	}
281	unlock_kernel();
282
283	return 0;
284	}
285
286	static int get_mixer_info(int dev, void __user *arg)
287	{
288	mixer_info info;
289	memset(&info, 0, sizeof(info));
290	strlcpy(info.id, mixer_devs[dev]->id, sizeof(info.id));
291	strlcpy(info.name, mixer_devs[dev]->name, sizeof(info.name));
292	info.modify_counter = mixer_devs[dev]->modify_counter;
293	if (__copy_to_user(arg, &info, sizeof(info)))
294	return -EFAULT;
295	return 0;
296	}
297
298	static int get_old_mixer_info(int dev, void __user *arg)
299	{
300	_old_mixer_info info;
301	memset(&info, 0, sizeof(info));
302	strlcpy(info.id, mixer_devs[dev]->id, sizeof(info.id));
303	strlcpy(info.name, mixer_devs[dev]->name, sizeof(info.name));
304	if (copy_to_user(arg, &info, sizeof(info)))
305	return -EFAULT;
306	return 0;
307	}
308
309	static int sound_mixer_ioctl(int mixdev, unsigned int cmd, void __user *arg)
310	{
311	if (mixdev < 0 \|\| mixdev >= MAX_MIXER_DEV)
312	return -ENXIO;
313	/* Try to load the mixer... */
314	if (mixer_devs[mixdev] == NULL) {
315	request_module("mixer%d", mixdev);
316	}
317	if (mixdev >= num_mixers \|\| !mixer_devs[mixdev])
318	return -ENXIO;
319	if (cmd == SOUND_MIXER_INFO)
320	return get_mixer_info(mixdev, arg);
321	if (cmd == SOUND_OLD_MIXER_INFO)
322	return get_old_mixer_info(mixdev, arg);
323	if (_SIOC_DIR(cmd) & _SIOC_WRITE)
324	mixer_devs[mixdev]->modify_counter++;
325	if (!mixer_devs[mixdev]->ioctl)
326	return -EINVAL;
327	return mixer_devs[mixdev]->ioctl(mixdev, cmd, arg);
328	}
329
6b98515a	330	static long sound_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1da177e4 LT	331	{
1da177e4 LT	332	int len = 0, dtype;
6b98515a AC	333	int dev = iminor(file->f_dentry->d_inode);
6b98515a AC	334	long ret = -EINVAL;
1da177e4 LT	335	void __user p = (void __user )arg;
	336
	337	if (_SIOC_DIR(cmd) != _SIOC_NONE && _SIOC_DIR(cmd) != 0) {
	338	/*
	339	* Have to validate the address given by the process.
	340	*/
	341	len = _SIOC_SIZE(cmd);
	342	if (len < 1 \|\| len > 65536 \|\| !p)
	343	return -EFAULT;
	344	if (_SIOC_DIR(cmd) & _SIOC_WRITE)
	345	if (!access_ok(VERIFY_READ, p, len))
	346	return -EFAULT;
	347	if (_SIOC_DIR(cmd) & _SIOC_READ)
	348	if (!access_ok(VERIFY_WRITE, p, len))
	349	return -EFAULT;
	350	}
	351	DEB(printk("sound_ioctl(dev=%d, cmd=0x%x, arg=0x%x)\n", dev, cmd, arg));
	352	if (cmd == OSS_GETVERSION)
	353	return __put_user(SOUND_VERSION, (int __user *)p);
	354
6b98515a	355	lock_kernel();
1da177e4 LT	356	if (_IOC_TYPE(cmd) == 'M' && num_mixers > 0 && /* Mixer ioctl */
	357	(dev & 0x0f) != SND_DEV_CTL) {
	358	dtype = dev & 0x0f;
	359	switch (dtype) {
	360	case SND_DEV_DSP:
	361	case SND_DEV_DSP16:
	362	case SND_DEV_AUDIO:
6b98515a	363	ret = sound_mixer_ioctl(audio_devs[dev >> 4]->mixer_dev,
1da177e4	364	cmd, p);
6b98515a	365	break;
1da177e4	366	default:
6b98515a AC	367	ret = sound_mixer_ioctl(dev >> 4, cmd, p);
6b98515a AC	368	break;
1da177e4	369	}
6b98515a AC	370	unlock_kernel();
6b98515a AC	371	return ret;
1da177e4	372	}
6b98515a	373
1da177e4 LT	374	switch (dev & 0x0f) {
	375	case SND_DEV_CTL:
	376	if (cmd == SOUND_MIXER_GETLEVELS)
6b98515a AC	377	ret = get_mixer_levels(p);
	378	else if (cmd == SOUND_MIXER_SETLEVELS)
	379	ret = set_mixer_levels(p);
	380	else
	381	ret = sound_mixer_ioctl(dev >> 4, cmd, p);
	382	break;
1da177e4 LT	383
	384	case SND_DEV_SEQ:
	385	case SND_DEV_SEQ2:
6b98515a AC	386	ret = sequencer_ioctl(dev, file, cmd, p);
6b98515a AC	387	break;
1da177e4 LT	388
	389	case SND_DEV_DSP:
	390	case SND_DEV_DSP16:
	391	case SND_DEV_AUDIO:
	392	return audio_ioctl(dev, file, cmd, p);
	393	break;
	394
	395	case SND_DEV_MIDIN:
	396	return MIDIbuf_ioctl(dev, file, cmd, p);
	397	break;
	398
	399	}
6b98515a AC	400	unlock_kernel();
6b98515a AC	401	return ret;
1da177e4 LT	402	}
	403
	404	static unsigned int sound_poll(struct file file, poll_table wait)
	405	{
7bc56323	406	struct inode *inode = file->f_path.dentry->d_inode;
1da177e4 LT	407	int dev = iminor(inode);
	408
	409	DEB(printk("sound_poll(dev=%d)\n", dev));
	410	switch (dev & 0x0f) {
	411	case SND_DEV_SEQ:
	412	case SND_DEV_SEQ2:
	413	return sequencer_poll(dev, file, wait);
	414
	415	case SND_DEV_MIDIN:
	416	return MIDIbuf_poll(dev, file, wait);
	417
	418	case SND_DEV_DSP:
	419	case SND_DEV_DSP16:
	420	case SND_DEV_AUDIO:
	421	return DMAbuf_poll(file, dev >> 4, wait);
	422	}
	423	return 0;
	424	}
	425
	426	static int sound_mmap(struct file file, struct vm_area_struct vma)
	427	{
	428	int dev_class;
	429	unsigned long size;
	430	struct dma_buffparms *dmap = NULL;
7bc56323	431	int dev = iminor(file->f_path.dentry->d_inode);
1da177e4 LT	432
	433	dev_class = dev & 0x0f;
	434	dev >>= 4;
	435
	436	if (dev_class != SND_DEV_DSP && dev_class != SND_DEV_DSP16 && dev_class != SND_DEV_AUDIO) {
	437	printk(KERN_ERR "Sound: mmap() not supported for other than audio devices\n");
	438	return -EINVAL;
	439	}
	440	lock_kernel();
	441	if (vma->vm_flags & VM_WRITE) /* Map write and read/write to the output buf */
	442	dmap = audio_devs[dev]->dmap_out;
	443	else if (vma->vm_flags & VM_READ)
	444	dmap = audio_devs[dev]->dmap_in;
	445	else {
	446	printk(KERN_ERR "Sound: Undefined mmap() access\n");
	447	unlock_kernel();
	448	return -EINVAL;
	449	}
	450
	451	if (dmap == NULL) {
	452	printk(KERN_ERR "Sound: mmap() error. dmap == NULL\n");
	453	unlock_kernel();
	454	return -EIO;
	455	}
	456	if (dmap->raw_buf == NULL) {
	457	printk(KERN_ERR "Sound: mmap() called when raw_buf == NULL\n");
	458	unlock_kernel();
	459	return -EIO;
	460	}
	461	if (dmap->mapping_flags) {
	462	printk(KERN_ERR "Sound: mmap() called twice for the same DMA buffer\n");
	463	unlock_kernel();
	464	return -EIO;
	465	}
	466	if (vma->vm_pgoff != 0) {
	467	printk(KERN_ERR "Sound: mmap() offset must be 0.\n");
	468	unlock_kernel();
	469	return -EINVAL;
	470	}
	471	size = vma->vm_end - vma->vm_start;
	472
	473	if (size != dmap->bytes_in_use) {
	474	printk(KERN_WARNING "Sound: mmap() size = %ld. Should be %d\n", size, dmap->bytes_in_use);
	475	}
	476	if (remap_pfn_range(vma, vma->vm_start,
	477	virt_to_phys(dmap->raw_buf) >> PAGE_SHIFT,
	478	vma->vm_end - vma->vm_start, vma->vm_page_prot)) {
	479	unlock_kernel();
	480	return -EAGAIN;
	481	}
	482
	483	dmap->mapping_flags \|= DMA_MAP_MAPPED;
	484
	485	if( audio_devs[dev]->d->mmap)
	486	audio_devs[dev]->d->mmap(dev);
	487
	488	memset(dmap->raw_buf,
	489	dmap->neutral_byte,
	490	dmap->bytes_in_use);
	491	unlock_kernel();
	492	return 0;
	493	}
	494
9c2e08c5	495	const struct file_operations oss_sound_fops = {
1da177e4 LT	496	.owner = THIS_MODULE,
	497	.llseek = no_llseek,
	498	.read = sound_read,
	499	.write = sound_write,
	500	.poll = sound_poll,
6b98515a	501	.unlocked_ioctl = sound_ioctl,
1da177e4 LT	502	.mmap = sound_mmap,
	503	.open = sound_open,
	504	.release = sound_release,
	505	};
	506
	507	/*
	508	* Create the required special subdevices
	509	*/
	510
	511	static int create_special_devices(void)
	512	{
	513	int seq1,seq2;
	514	seq1=register_sound_special(&oss_sound_fops, 1);
	515	if(seq1==-1)
	516	goto bad;
	517	seq2=register_sound_special(&oss_sound_fops, 8);
	518	if(seq2!=-1)
	519	return 0;
	520	unregister_sound_special(1);
	521	bad:
	522	return -1;
	523	}
	524
	525
	526	/* These device names follow the official Linux device list,
	527	* Documentation/devices.txt. Let us know if there are other
	528	* common names we should support for compatibility.
	529	* Only those devices not created by the generic code in sound_core.c are
	530	* registered here.
	531	*/
	532	static const struct {
	533	unsigned short minor;
	534	char *name;
	535	umode_t mode;
	536	int *num;
	537	} dev_list[] = { /* list of minor devices */
	538	/* seems to be some confusion here -- this device is not in the device list */
	539	{SND_DEV_DSP16, "dspW", S_IWUGO \| S_IRUSR \| S_IRGRP,
	540	&num_audiodevs},
	541	{SND_DEV_AUDIO, "audio", S_IWUGO \| S_IRUSR \| S_IRGRP,
	542	&num_audiodevs},
	543	};
	544
	545	static int dmabuf;
	546	static int dmabug;
	547
	548	module_param(dmabuf, int, 0444);
	549	module_param(dmabug, int, 0444);
	550
	551	static int __init oss_init(void)
	552	{
	553	int err;
	554	int i, j;
	555
1da177e4 LT	556	#ifdef CONFIG_PCI
	557	if(dmabug)
	558	isa_dma_bridge_buggy = dmabug;
	559	#endif
	560
	561	err = create_special_devices();
	562	if (err) {
	563	printk(KERN_ERR "sound: driver already loaded/included in kernel\n");
	564	return err;
	565	}
	566
	567	/* Protecting the innocent */
	568	sound_dmap_flag = (dmabuf > 0 ? 1 : 0);
	569
b322f409	570	for (i = 0; i < ARRAY_SIZE(dev_list); i++) {
abe9ab8f GKH	571	device_create(sound_class, NULL,
	572	MKDEV(SOUND_MAJOR, dev_list[i].minor), NULL,
	573	"%s", dev_list[i].name);
1da177e4 LT	574
	575	if (!dev_list[i].num)
	576	continue;
	577
0936f26f	578	for (j = 1; j < *dev_list[i].num; j++)
abe9ab8f GKH	579	device_create(sound_class, NULL,
	580	MKDEV(SOUND_MAJOR,
	581	dev_list[i].minor + (j*0x10)),
	582	NULL, "%s%d", dev_list[i].name, j);
1da177e4 LT	583	}
1da177e4 LT	584
444c1953	585	if (sound_nblocks >= MAX_MEM_BLOCKS - 1)
1da177e4 LT	586	printk(KERN_ERR "Sound warning: Deallocation table was too small.\n");
	587
	588	return 0;
	589	}
	590
	591	static void __exit oss_cleanup(void)
	592	{
	593	int i, j;
	594
b322f409	595	for (i = 0; i < ARRAY_SIZE(dev_list); i++) {
d80f19fa	596	device_destroy(sound_class, MKDEV(SOUND_MAJOR, dev_list[i].minor));
1da177e4 LT	597	if (!dev_list[i].num)
1da177e4 LT	598	continue;
0936f26f	599	for (j = 1; j < *dev_list[i].num; j++)
d80f19fa	600	device_destroy(sound_class, MKDEV(SOUND_MAJOR, dev_list[i].minor + (j*0x10)));
1da177e4 LT	601	}
	602
	603	unregister_sound_special(1);
	604	unregister_sound_special(8);
	605
	606	sound_stop_timer();
	607
	608	sequencer_unload();
	609
	610	for (i = 0; i < MAX_DMA_CHANNELS; i++)
	611	if (dma_alloc_map[i] != DMA_MAP_UNAVAIL) {
	612	printk(KERN_ERR "Sound: Hmm, DMA%d was left allocated - fixed\n", i);
	613	sound_free_dma(i);
	614	}
	615
	616	for (i = 0; i < sound_nblocks; i++)
	617	vfree(sound_mem_blocks[i]);
	618
	619	}
	620
	621	module_init(oss_init);
	622	module_exit(oss_cleanup);
	623	MODULE_LICENSE("GPL");
ece7f77b AB	624	MODULE_DESCRIPTION("OSS Sound subsystem");
ece7f77b AB	625	MODULE_AUTHOR("Hannu Savolainen, et al.");
1da177e4 LT	626
	627
	628	int sound_alloc_dma(int chn, char *deviceID)
	629	{
	630	int err;
	631
	632	if ((err = request_dma(chn, deviceID)) != 0)
	633	return err;
	634
	635	dma_alloc_map[chn] = DMA_MAP_FREE;
	636
	637	return 0;
	638	}
ece7f77b	639	EXPORT_SYMBOL(sound_alloc_dma);
1da177e4 LT	640
	641	int sound_open_dma(int chn, char *deviceID)
	642	{
	643	if (!valid_dma(chn)) {
	644	printk(KERN_ERR "sound_open_dma: Invalid DMA channel %d\n", chn);
	645	return 1;
	646	}
	647
	648	if (dma_alloc_map[chn] != DMA_MAP_FREE) {
	649	printk("sound_open_dma: DMA channel %d busy or not allocated (%d)\n", chn, dma_alloc_map[chn]);
	650	return 1;
	651	}
	652	dma_alloc_map[chn] = DMA_MAP_BUSY;
	653	return 0;
	654	}
ece7f77b	655	EXPORT_SYMBOL(sound_open_dma);
1da177e4 LT	656
	657	void sound_free_dma(int chn)
	658	{
	659	if (dma_alloc_map[chn] == DMA_MAP_UNAVAIL) {
	660	/* printk( "sound_free_dma: Bad access to DMA channel %d\n", chn); */
	661	return;
	662	}
	663	free_dma(chn);
	664	dma_alloc_map[chn] = DMA_MAP_UNAVAIL;
	665	}
ece7f77b	666	EXPORT_SYMBOL(sound_free_dma);
1da177e4 LT	667
	668	void sound_close_dma(int chn)
	669	{
	670	if (dma_alloc_map[chn] != DMA_MAP_BUSY) {
	671	printk(KERN_ERR "sound_close_dma: Bad access to DMA channel %d\n", chn);
	672	return;
	673	}
	674	dma_alloc_map[chn] = DMA_MAP_FREE;
	675	}
ece7f77b	676	EXPORT_SYMBOL(sound_close_dma);
1da177e4 LT	677
	678	static void do_sequencer_timer(unsigned long dummy)
	679	{
	680	sequencer_timer(0);
	681	}
	682
	683
8d06afab	684	static DEFINE_TIMER(seq_timer, do_sequencer_timer, 0, 0);
1da177e4 LT	685
	686	void request_sound_timer(int count)
	687	{
	688	extern unsigned long seq_time;
	689
	690	if (count < 0) {
	691	seq_timer.expires = (-count) + jiffies;
	692	add_timer(&seq_timer);
	693	return;
	694	}
	695	count += seq_time;
	696
	697	count -= jiffies;
	698
	699	if (count < 1)
	700	count = 1;
	701
	702	seq_timer.expires = (count) + jiffies;
	703	add_timer(&seq_timer);
	704	}
	705
	706	void sound_stop_timer(void)
	707	{
	708	del_timer(&seq_timer);
	709	}
	710
	711	void conf_printf(char name, struct address_info hw_config)
	712	{
	713	#ifndef CONFIG_SOUND_TRACEINIT
	714	return;
	715	#else
	716	printk("<%s> at 0x%03x", name, hw_config->io_base);
	717
	718	if (hw_config->irq)
	719	printk(" irq %d", (hw_config->irq > 0) ? hw_config->irq : -hw_config->irq);
	720
	721	if (hw_config->dma != -1 \|\| hw_config->dma2 != -1)
	722	{
	723	printk(" dma %d", hw_config->dma);
	724	if (hw_config->dma2 != -1)
	725	printk(",%d", hw_config->dma2);
	726	}
	727	printk("\n");
	728	#endif
	729	}
ece7f77b	730	EXPORT_SYMBOL(conf_printf);
1da177e4 LT	731
	732	void conf_printf2(char *name, int base, int irq, int dma, int dma2)
	733	{
	734	#ifndef CONFIG_SOUND_TRACEINIT
	735	return;
	736	#else
	737	printk("<%s> at 0x%03x", name, base);
	738
	739	if (irq)
	740	printk(" irq %d", (irq > 0) ? irq : -irq);
	741
	742	if (dma != -1 \|\| dma2 != -1)
	743	{
	744	printk(" dma %d", dma);
	745	if (dma2 != -1)
	746	printk(",%d", dma2);
	747	}
	748	printk("\n");
	749	#endif
	750	}
ece7f77b AB	751	EXPORT_SYMBOL(conf_printf2);
ece7f77b AB	752