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-rw-r--r--sound/oss/soundcard.c210
1 files changed, 97 insertions, 113 deletions
diff --git a/sound/oss/soundcard.c b/sound/oss/soundcard.c
index d33bb464f70..b70c7c8f9c5 100644
--- a/sound/oss/soundcard.c
+++ b/sound/oss/soundcard.c
@@ -1,5 +1,5 @@
/*
- * linux/drivers/sound/soundcard.c
+ * linux/sound/oss/soundcard.c
*
* Sound card driver for Linux
*
@@ -22,7 +22,6 @@
* Christoph Hellwig : Some cleanup work (2000/03/01)
*/
-#include <linux/config.h>
#include "sound_config.h"
#include <linux/init.h>
@@ -33,17 +32,18 @@
#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/slab.h>
#include <linux/ioport.h>
-#include <linux/devfs_fs_kernel.h>
#include <linux/major.h>
#include <linux/delay.h>
#include <linux/proc_fs.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
#include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/device.h>
/*
* This ought to be moved into include/asm/dma.h
@@ -55,7 +55,8 @@
/*
* Table for permanently allocated memory (used when unloading the module)
*/
-void * sound_mem_blocks[1024];
+void * sound_mem_blocks[MAX_MEM_BLOCKS];
+static DEFINE_MUTEX(soundcard_mutex);
int sound_nblocks = 0;
/* Persistent DMA buffers */
@@ -86,7 +87,7 @@ 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 (strncmp(name, mixer_vols[i].name, 32) == 0) {
if (present)
mixer_vols[i].num = i;
return mixer_vols[i].levels;
@@ -98,7 +99,7 @@ int *load_mixer_volumes(char *name, int *levels, int present)
}
n = num_mixer_volumes++;
- strcpy(mixer_vols[n].name, name);
+ strncpy(mixer_vols[n].name, name, 32);
if (present)
mixer_vols[n].num = n;
@@ -109,6 +110,7 @@ int *load_mixer_volumes(char *name, int *levels, int present)
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)
{
@@ -141,7 +143,7 @@ static int get_mixer_levels(void __user * arg)
static ssize_t sound_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
- int dev = iminor(file->f_dentry->d_inode);
+ int dev = iminor(file_inode(file));
int ret = -EINVAL;
/*
@@ -150,9 +152,8 @@ static ssize_t sound_read(struct file *file, char __user *buf, size_t count, lof
* big one anyway, we might as well bandage here..
*/
- lock_kernel();
+ mutex_lock(&soundcard_mutex);
- DEB(printk("sound_read(dev=%d, count=%d)\n", dev, count));
switch (dev & 0x0f) {
case SND_DEV_DSP:
case SND_DEV_DSP16:
@@ -168,17 +169,16 @@ static ssize_t sound_read(struct file *file, char __user *buf, size_t count, lof
case SND_DEV_MIDIN:
ret = MIDIbuf_read(dev, file, buf, count);
}
- unlock_kernel();
+ mutex_unlock(&soundcard_mutex);
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_dentry->d_inode);
+ int dev = iminor(file_inode(file));
int ret = -EINVAL;
- lock_kernel();
- DEB(printk("sound_write(dev=%d, count=%d)\n", dev, count));
+ mutex_lock(&soundcard_mutex);
switch (dev & 0x0f) {
case SND_DEV_SEQ:
case SND_DEV_SEQ2:
@@ -195,7 +195,7 @@ static ssize_t sound_write(struct file *file, const char __user *buf, size_t cou
ret = MIDIbuf_write(dev, file, buf, count);
break;
}
- unlock_kernel();
+ mutex_unlock(&soundcard_mutex);
return ret;
}
@@ -204,56 +204,56 @@ 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;
}
+ mutex_lock(&soundcard_mutex);
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);
}
+ retval = -ENXIO;
if (dev && (dev >= num_mixers || mixer_devs[dev] == NULL))
- return -ENXIO;
+ break;
if (!try_module_get(mixer_devs[dev]->owner))
- return -ENXIO;
+ break;
+
+ retval = 0;
break;
case SND_DEV_SEQ:
case SND_DEV_SEQ2:
- if ((retval = sequencer_open(dev, file)) < 0)
- return retval;
+ retval = sequencer_open(dev, file);
break;
case SND_DEV_MIDIN:
- if ((retval = MIDIbuf_open(dev, file)) < 0)
- return retval;
+ retval = MIDIbuf_open(dev, file);
break;
case SND_DEV_DSP:
case SND_DEV_DSP16:
case SND_DEV_AUDIO:
- if ((retval = audio_open(dev, file)) < 0)
- return retval;
+ retval = audio_open(dev, file);
break;
default:
printk(KERN_ERR "Invalid minor device %d\n", dev);
- return -ENXIO;
+ retval = -ENXIO;
}
- return 0;
+ mutex_unlock(&soundcard_mutex);
+ return retval;
}
static int sound_release(struct inode *inode, struct file *file)
{
int dev = iminor(inode);
- lock_kernel();
- DEB(printk("sound_release(dev=%d)\n", dev));
+ mutex_lock(&soundcard_mutex);
switch (dev & 0x0f) {
case SND_DEV_CTL:
module_put(mixer_devs[dev >> 4]->owner);
@@ -277,7 +277,7 @@ static int sound_release(struct inode *inode, struct file *file)
default:
printk(KERN_ERR "Sound error: Releasing unknown device 0x%02x\n", dev);
}
- unlock_kernel();
+ mutex_unlock(&soundcard_mutex);
return 0;
}
@@ -326,11 +326,11 @@ static int sound_mixer_ioctl(int mixdev, unsigned int cmd, void __user *arg)
return mixer_devs[mixdev]->ioctl(mixdev, cmd, arg);
}
-static int sound_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long sound_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
int len = 0, dtype;
- int dev = iminor(inode);
+ int dev = iminor(file_inode(file));
+ long ret = -EINVAL;
void __user *p = (void __user *)arg;
if (_SIOC_DIR(cmd) != _SIOC_NONE && _SIOC_DIR(cmd) != 0) {
@@ -347,10 +347,10 @@ static int sound_ioctl(struct inode *inode, struct file *file,
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);
+ mutex_lock(&soundcard_mutex);
if (_IOC_TYPE(cmd) == 'M' && num_mixers > 0 && /* Mixer ioctl */
(dev & 0x0f) != SND_DEV_CTL) {
dtype = dev & 0x0f;
@@ -358,45 +358,52 @@ static int sound_ioctl(struct inode *inode, struct file *file,
case SND_DEV_DSP:
case SND_DEV_DSP16:
case SND_DEV_AUDIO:
- return sound_mixer_ioctl(audio_devs[dev >> 4]->mixer_dev,
+ ret = sound_mixer_ioctl(audio_devs[dev >> 4]->mixer_dev,
cmd, p);
-
+ break;
default:
- return sound_mixer_ioctl(dev >> 4, cmd, p);
+ ret = sound_mixer_ioctl(dev >> 4, cmd, p);
+ break;
}
+ mutex_unlock(&soundcard_mutex);
+ return ret;
}
+
switch (dev & 0x0f) {
case SND_DEV_CTL:
if (cmd == SOUND_MIXER_GETLEVELS)
- return get_mixer_levels(p);
- if (cmd == SOUND_MIXER_SETLEVELS)
- return set_mixer_levels(p);
- return sound_mixer_ioctl(dev >> 4, cmd, p);
+ 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:
- return sequencer_ioctl(dev, file, cmd, p);
+ 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);
+ ret = audio_ioctl(dev, file, cmd, p);
break;
case SND_DEV_MIDIN:
- return MIDIbuf_ioctl(dev, file, cmd, p);
+ ret = MIDIbuf_ioctl(dev, file, cmd, p);
break;
}
- return -EINVAL;
+ mutex_unlock(&soundcard_mutex);
+ return ret;
}
static unsigned int sound_poll(struct file *file, poll_table * wait)
{
- struct inode *inode = file->f_dentry->d_inode;
+ struct inode *inode = file_inode(file);
int dev = iminor(inode);
- DEB(printk("sound_poll(dev=%d)\n", dev));
switch (dev & 0x0f) {
case SND_DEV_SEQ:
case SND_DEV_SEQ2:
@@ -418,7 +425,7 @@ 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_dentry->d_inode);
+ int dev = iminor(file_inode(file));
dev_class = dev & 0x0f;
dev >>= 4;
@@ -427,35 +434,35 @@ static int sound_mmap(struct file *file, struct vm_area_struct *vma)
printk(KERN_ERR "Sound: mmap() not supported for other than audio devices\n");
return -EINVAL;
}
- lock_kernel();
+ mutex_lock(&soundcard_mutex);
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();
+ mutex_unlock(&soundcard_mutex);
return -EINVAL;
}
if (dmap == NULL) {
printk(KERN_ERR "Sound: mmap() error. dmap == NULL\n");
- unlock_kernel();
+ mutex_unlock(&soundcard_mutex);
return -EIO;
}
if (dmap->raw_buf == NULL) {
printk(KERN_ERR "Sound: mmap() called when raw_buf == NULL\n");
- unlock_kernel();
+ mutex_unlock(&soundcard_mutex);
return -EIO;
}
if (dmap->mapping_flags) {
printk(KERN_ERR "Sound: mmap() called twice for the same DMA buffer\n");
- unlock_kernel();
+ mutex_unlock(&soundcard_mutex);
return -EIO;
}
if (vma->vm_pgoff != 0) {
printk(KERN_ERR "Sound: mmap() offset must be 0.\n");
- unlock_kernel();
+ mutex_unlock(&soundcard_mutex);
return -EINVAL;
}
size = vma->vm_end - vma->vm_start;
@@ -466,7 +473,7 @@ static int sound_mmap(struct file *file, struct vm_area_struct *vma)
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();
+ mutex_unlock(&soundcard_mutex);
return -EAGAIN;
}
@@ -478,17 +485,17 @@ static int sound_mmap(struct file *file, struct vm_area_struct *vma)
memset(dmap->raw_buf,
dmap->neutral_byte,
dmap->bytes_in_use);
- unlock_kernel();
+ mutex_unlock(&soundcard_mutex);
return 0;
}
-struct file_operations oss_sound_fops = {
+const struct file_operations oss_sound_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.read = sound_read,
.write = sound_write,
.poll = sound_poll,
- .ioctl = sound_ioctl,
+ .unlocked_ioctl = sound_ioctl,
.mmap = sound_mmap,
.open = sound_open,
.release = sound_release,
@@ -513,42 +520,26 @@ bad:
}
-/* 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);
+/* additional minors for compatibility */
+struct oss_minor_dev {
+ unsigned short minor;
+ unsigned int enabled;
+} dev_list[] = {
+ { SND_DEV_DSP16 },
+ { SND_DEV_AUDIO },
+};
+
static int __init oss_init(void)
{
int err;
int i, j;
- /* drag in sound_syms.o */
- {
- extern char sound_syms_symbol;
- sound_syms_symbol = 0;
- }
-
#ifdef CONFIG_PCI
if(dmabug)
isa_dma_bridge_buggy = dmabug;
@@ -563,29 +554,16 @@ static int __init oss_init(void)
/* Protecting the innocent */
sound_dmap_flag = (dmabuf > 0 ? 1 : 0);
- for (i = 0; i < sizeof (dev_list) / sizeof *dev_list; i++) {
- devfs_mk_cdev(MKDEV(SOUND_MAJOR, dev_list[i].minor),
- S_IFCHR | dev_list[i].mode,
- "sound/%s", dev_list[i].name);
- class_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++) {
- devfs_mk_cdev(MKDEV(SOUND_MAJOR,
- dev_list[i].minor + (j*0x10)),
- S_IFCHR | dev_list[i].mode,
- "sound/%s%d", dev_list[i].name, j);
- class_device_create(sound_class, NULL,
- MKDEV(SOUND_MAJOR, dev_list[i].minor + (j*0x10)),
- NULL, "%s%d", dev_list[i].name, j);
- }
+ for (i = 0; i < ARRAY_SIZE(dev_list); i++) {
+ j = 0;
+ do {
+ unsigned short minor = dev_list[i].minor + j * 0x10;
+ if (!register_sound_special(&oss_sound_fops, minor))
+ dev_list[i].enabled = (1 << j);
+ } while (++j < num_audiodevs);
}
- if (sound_nblocks >= 1024)
+ if (sound_nblocks >= MAX_MEM_BLOCKS - 1)
printk(KERN_ERR "Sound warning: Deallocation table was too small.\n");
return 0;
@@ -595,15 +573,12 @@ static void __exit oss_cleanup(void)
{
int i, j;
- for (i = 0; i < sizeof (dev_list) / sizeof *dev_list; i++) {
- devfs_remove("sound/%s", dev_list[i].name);
- class_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++) {
- devfs_remove("sound/%s%d", dev_list[i].name, j);
- class_device_destroy(sound_class, MKDEV(SOUND_MAJOR, dev_list[i].minor + (j*0x10)));
- }
+ for (i = 0; i < ARRAY_SIZE(dev_list); i++) {
+ j = 0;
+ do {
+ if (dev_list[i].enabled & (1 << j))
+ unregister_sound_special(dev_list[i].minor);
+ } while (++j < num_audiodevs);
}
unregister_sound_special(1);
@@ -627,6 +602,8 @@ static void __exit oss_cleanup(void)
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)
@@ -640,6 +617,7 @@ int sound_alloc_dma(int chn, char *deviceID)
return 0;
}
+EXPORT_SYMBOL(sound_alloc_dma);
int sound_open_dma(int chn, char *deviceID)
{
@@ -655,6 +633,7 @@ int sound_open_dma(int chn, char *deviceID)
dma_alloc_map[chn] = DMA_MAP_BUSY;
return 0;
}
+EXPORT_SYMBOL(sound_open_dma);
void sound_free_dma(int chn)
{
@@ -665,6 +644,7 @@ void sound_free_dma(int chn)
free_dma(chn);
dma_alloc_map[chn] = DMA_MAP_UNAVAIL;
}
+EXPORT_SYMBOL(sound_free_dma);
void sound_close_dma(int chn)
{
@@ -674,6 +654,7 @@ void sound_close_dma(int chn)
}
dma_alloc_map[chn] = DMA_MAP_FREE;
}
+EXPORT_SYMBOL(sound_close_dma);
static void do_sequencer_timer(unsigned long dummy)
{
@@ -727,6 +708,7 @@ void conf_printf(char *name, struct address_info *hw_config)
printk("\n");
#endif
}
+EXPORT_SYMBOL(conf_printf);
void conf_printf2(char *name, int base, int irq, int dma, int dma2)
{
@@ -747,3 +729,5 @@ void conf_printf2(char *name, int base, int irq, int dma, int dma2)
printk("\n");
#endif
}
+EXPORT_SYMBOL(conf_printf2);
+
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 20:53:03 +0000