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This file is part of Open Sound System.
Copyright (C) 4Front Technologies 1996-2008.
This this source file is released under GPL v2 license (no other versions). See the COPYING file included in the main directory of this source distribution for the license terms and conditions.
#include <oss_config.h> #include <midi_core.h>
OSS has traditionally used fixed character device number (14). However current OSS uses fully dynamic major number allocation. The legacy character device 14 is left for ALSA.
static int osscore_major = 0; static int oss_expired = 0;
Number of cards supported in the same system. This should be largish because unplugging/replugging USB cards in wrong way may create large number of card instances.
#define MAX_CARDS 32
static oss_device_t *cards[MAX_CARDS];
int oss_num_cards = 0;
void
oss_pci_byteswap (oss_device_t * osdev, int mode)
{
// NOP
}
int
oss_pci_read_config_byte (oss_device_t * osdev, offset_t where,
unsigned char *val)
{
return osscore_pci_read_config_byte (osdev->dip, where, val);
}
int
oss_pci_read_config_irq (oss_device_t * osdev, offset_t where,
unsigned char *val)
{
return osscore_pci_read_config_irq (osdev->dip, where, val);
}
int
oss_pci_read_config_word (oss_device_t * osdev, offset_t where,
unsigned short *val)
{
if (osdev == NULL)
{
cmn_err (CE_CONT, "oss_pci_read_config_word: osdev==NULL\n");
return PCIBIOS_FAILED;
}
return osscore_pci_read_config_word (osdev->dip, where, val);
}
int
oss_pci_read_config_dword (oss_device_t * osdev, offset_t where,
unsigned int *val)
{
return osscore_pci_read_config_dword (osdev->dip, where, val);
}
int
oss_pci_write_config_byte (oss_device_t * osdev, offset_t where,
unsigned char val)
{
return osscore_pci_write_config_byte (osdev->dip, where, val);
}
int
oss_pci_write_config_word (oss_device_t * osdev, offset_t where,
unsigned short val)
{
return osscore_pci_write_config_word (osdev->dip, where, val);
}
int
oss_pci_write_config_dword (oss_device_t * osdev, offset_t where,
unsigned int val)
{
return osscore_pci_write_config_dword (osdev->dip, where, val);
}
int
oss_pci_enable_msi (oss_device_t * osdev)
{
return osscore_pci_enable_msi (osdev->dip);
}
int
oss_find_minor (int dev_class, int instance)
{
int i;
for (i = 0; i < oss_num_cdevs; i++)
{
if (oss_cdevs[i]->d != NULL && oss_cdevs[i]->dev_class == dev_class
&& oss_cdevs[i]->instance == instance)
return i;
}
return OSS_ENXIO;
}
oss_device_t *
osdev_create (dev_info_t * dip, int dev_type,
int instance, const char *nick, const char *handle)
{
oss_device_t *osdev;
osdev = PMALLOC (NULL, sizeof (*osdev));
if (osdev == NULL)
{
cmn_err (CE_WARN, "osdev_create: Out of memory\n");
return NULL;
}
memset (osdev, 0, sizeof (*osdev));
sprintf (osdev->nick, "%s%d", nick, instance);
osdev->instance = instance;
osdev->dip = dip;
osdev->available = 1;
osdev->first_mixer = -1;
strcpy (osdev->modname, nick);
if (handle == NULL)
handle = nick;
if (oss_num_cards >= MAX_CARDS)
cmn_err (CE_WARN, "Too many OSS devices. At most %d permitted.\n",
MAX_CARDS);
else
{
osdev->cardnum = oss_num_cards;
cards[oss_num_cards++] = osdev;
}
Create the device handle
switch (dev_type)
{
case DRV_PCI:
{
unsigned int subvendor;
char *devpath;
devpath = oss_pci_read_devpath (osdev->dip);
oss_pci_read_config_dword (osdev, 0x2c, &subvendor);
sprintf (osdev->handle, "PCI%08x-%s", subvendor, devpath);
}
break;
case DRV_USB:
// TODO: Get the vendor information
sprintf (osdev->handle, "USB-%s%d", handle, instance);
break;
default:
sprintf (osdev->handle, "%s%d", handle, instance);
}
return osdev;
}
oss_device_t *
osdev_clone (oss_device_t * orig_osdev, int new_instance)
{
oss_device_t *osdev;
osdev = PMALLOC (NULL, sizeof (*osdev));
if (osdev == NULL)
{
cmn_err (CE_WARN, "osdev_create: Out of memory\n");
return NULL;
}
memcpy (osdev, orig_osdev, sizeof (*osdev));
osdev->dev_type = DRV_CLONE;
osdev->instance = new_instance;
sprintf (osdev->nick, "%s%d", orig_osdev->modname, new_instance);
sprintf (osdev->handle, "%s%d", orig_osdev->modname, new_instance);
return osdev;
}
void
osdev_delete (oss_device_t * osdev)
{
int i;
if (osdev == NULL)
return;
osdev->available = 0;
Mark all minor nodes for this module as invalid.
for (i = 0; i < oss_num_cdevs; i++)
if (oss_cdevs[i]->osdev == osdev)
{
oss_cdevs[i]->d = NULL;
oss_cdevs[i]->osdev = NULL;
strcpy (oss_cdevs[i]->name, "Removed device");
}
}
void
osdev_set_owner (oss_device_t * osdev, struct module *owner)
{
osdev->owner = owner;
}
void
osdev_set_major (oss_device_t * osdev, int major)
{
osdev->major = major;
}
void
osdev_set_irqparms (oss_device_t * osdev, void *irqparms)
{
osdev->irqparms = irqparms;
}
void *
osdev_get_irqparms (oss_device_t * osdev)
{
return osdev->irqparms;
}
char *
osdev_get_nick (oss_device_t * osdev)
{
return osdev->nick;
}
int
osdev_get_instance (oss_device_t * osdev)
{
return osdev->instance;
}
void
oss_inc_intrcount (oss_device_t * osdev, int claimed)
{
osdev->intrcount++;
if (claimed)
osdev->ackcount++;
}
struct module *
osdev_get_owner (oss_device_t * osdev)
{
return osdev->owner;
}
void *
oss_get_osid (oss_device_t * osdev)
{
return NULL; // TODO
}
int
oss_get_procinfo(int what)
{
switch (what)
{
case OSS_GET_PROCINFO_UID:
return oss_get_uid();
break;
}
return OSS_EINVAL;
}
int
oss_disable_device (oss_device_t * osdev)
{
int i;
if (osdev->major > 0)
oss_unregister_chrdev (osdev->major, osdev->nick);
osdev->major = 0;
Now mark all devices unavailable (for the time being) TODO: Mobe this stuff to some common OSS module (also in Solaris)
if (osdev->refcount > 0)
{
return OSS_EBUSY;
}
for (i = 0; i < num_mixers; i++)
if (mixer_devs[i]->osdev == osdev)
{
mixer_devs[i]->unloaded = 1;
}
for (i = 0; i < num_mididevs; i++)
{
if (midi_devs[i]->osdev == osdev)
{
midi_devs[i]->unloaded = 1;
}
}
for (i = 0; i < num_audio_engines; i++)
if (audio_engines[i]->osdev == osdev)
{
audio_uninit_device (i);
}
return 0;
}
void
oss_reserve_device (oss_device_t * osdev)
{
osdev->refcount++;
}
void
oss_unreserve_device (oss_device_t * osdev, int decrement)
{
osdev->refcount--;
if (osdev->refcount < 0)
osdev->refcount = 0;
}
int
oss_register_device (oss_device_t * osdev, const char *name)
{
if (name == NULL)
{
cmn_err (CE_WARN, "oss_register_device: name==NULL\n");
osdev->name = "Undefined name";
return 0;
}
if ((osdev->name = PMALLOC (NULL, strlen (name) + 1)) == NULL)
{
cmn_err (CE_WARN, "Cannot allocate memory for device name\n");
osdev->name = "Unknown device";
}
strcpy (osdev->name, name);
return 0;
}
void
oss_unregister_device (oss_device_t * osdev)
{
Notice! The driver calling this routine (the owner of the osdev parameter) has already uninitialized itself. Do not do any actions that may call this driver directly or indirectly.
// TODO: Move this to some common OSS module (also under Solaris)
}
int
oss_get_cardinfo (int cardnum, oss_card_info * ci)
{
Print information about a 'card' in a format suitable for /dev/sndstat
if (cardnum < 0 || cardnum >= oss_num_cards)
return OSS_ENXIO;
if (cards[cardnum]->name != NULL)
strncpy (ci->longname, cards[cardnum]->name, 128);
ci->longname[127] = 0;
if (cards[cardnum]->nick != NULL)
strncpy (ci->shortname, cards[cardnum]->nick, 16);
ci->shortname[15] = 0;
if (cards[cardnum]->hw_info != NULL)
strncpy (ci->hw_info, cards[cardnum]->hw_info, sizeof (ci->hw_info));
ci->hw_info[sizeof (ci->hw_info) - 1] = 0;
ci->intr_count = cards[cardnum]->intrcount;
ci->ack_count = cards[cardnum]->ackcount;
return 0;
}
int
__oss_alloc_dmabuf (int dev, dmap_p dmap, unsigned int alloc_flags,
oss_uint64_t maxaddr, int direction)
{
void *buf;
int err;
oss_native_word phaddr;
int size = 64 * 1024;
extern int dma_buffsize;
if (dma_buffsize > 16 && dma_buffsize <= 128)
size = dma_buffsize * 1024;
if (dmap->dmabuf != NULL)
return 0; /* Already done */
if (dmap == NULL)
{
cmn_err (CE_WARN, "oss_alloc_dmabuf: dmap==NULL\n");
return OSS_EIO;
}
Some applications and virtual drivers need shorter buffer.
if (dmap->flags & DMAP_SMALLBUF)
{
size = SMALL_DMABUF_SIZE;
}
else if (dmap->flags & DMAP_MEDIUMBUF)
{
size = MEDIUM_DMABUF_SIZE;
}
if ((alloc_flags & DMABUF_SIZE_16BITS) && size > 32 * 1024)
size = 32 * 1024;
dmap->dmabuf = NULL;
dmap->buffsize = size;
err = -1;
while (err < 0 && dmap->dmabuf == NULL && dmap->buffsize >= 4 * 1024)
{
if ((buf =
oss_contig_malloc (dmap->osdev, dmap->buffsize, maxaddr,
&phaddr)) == NULL)
{
if ((dmap->buffsize = (dmap->buffsize / 2)) < 8 * 1024)
return OSS_ENOMEM;
cmn_err (CE_CONT, "Dropping DMA buffer size to %d bytes.\n",
dmap->buffsize);
continue;
}
dmap->dmabuf = buf;
dmap->dmabuf_phys = phaddr;
return 0;
}
return OSS_ENOMEM;
}
void
oss_free_dmabuf (int dev, dmap_p dmap)
{
void *buf = dmap->dmabuf;
if (dmap->dmabuf == NULL)
return;
dmap->dmabuf = NULL;
oss_contig_free (NULL, buf, dmap->buffsize);
dmap->dmabuf_phys = 0;
}
static inline int
cpy_file (oss_file_handle_t * f, struct fileinfo *fi)
{
// TODO: Handle acc_flags properly
fi->acc_flags = 0;
fi->mode = 0;
fi->acc_flags = oss_file_get_flags (f);
if ((fi->acc_flags & O_ACCMODE) == O_RDWR)
fi->mode = OPEN_READWRITE;
if ((fi->acc_flags & O_ACCMODE) == O_RDONLY)
fi->mode = OPEN_READ;
if ((fi->acc_flags & O_ACCMODE) == O_WRONLY)
fi->mode = OPEN_WRITE;
return fi->mode;
}
static int
oss_cdev_open (oss_inode_handle_t * inode, oss_file_handle_t * file)
{
int dev = oss_inode_get_minor (inode);
oss_native_word d;
int tmpdev, dev_class, retval;
struct fileinfo fi;
oss_cdev_t *cdev;
cpy_file (file, &fi);
if (dev > oss_num_cdevs)
return OSS_ENXIO;
if (oss_cdevs == NULL)
return OSS_ENXIO;
if ((cdev = oss_cdevs[dev]) == NULL || cdev->d == NULL)
return OSS_ENXIO;
DDB (cmn_err
(CE_CONT, "oss_cdev_open(%d): %s, class=%d, instance=%d\n", dev,
cdev->name, cdev->dev_class, cdev->instance));
if (cdev->d->open == NULL)
{
return OSS_ENODEV;
}
dev_class = cdev->dev_class;
tmpdev = -1;
oss_inc_refcounts ();
retval =
cdev->d->open (cdev->instance, cdev->dev_class, &fi, 0, 0, &tmpdev);
if (retval < 0)
{
oss_dec_refcounts ();
return retval;
}
if (tmpdev != -1)
dev = tmpdev;
//open_devices++;
//open_count[dev]++;
d = dev;
oss_file_set_private (file, (void *) d);
return 0;
}
static int
oss_cdev_release (oss_inode_handle_t * inode, oss_file_handle_t * file)
{
oss_native_word d = (oss_native_word) oss_file_get_private (file);
int dev = d;
struct fileinfo fi;
oss_cdev_t *cdev;
cpy_file (file, &fi);
if (dev > oss_num_cdevs)
return 0;
if ((cdev = oss_cdevs[dev]) == NULL || cdev->d->close == NULL)
{
return 0;
}
cdev->d->close (cdev->instance, &fi);
oss_dec_refcounts ();
return 0;
}
static ssize_t
oss_cdev_read (oss_file_handle_t * file, char *buf, size_t count,
loff_t * offs)
{
oss_native_word d = (oss_native_word) oss_file_get_private (file);
int dev = d;
oss_cdev_t *cdev;
int err;
uio_t uio;
struct fileinfo fi;
cpy_file (file, &fi);
if (dev > oss_num_cdevs)
return OSS_ENXIO;
if ((cdev = oss_cdevs[dev]) == NULL || cdev->d->read == NULL)
{
return OSS_ENXIO;
}
if ((err = oss_create_uio (&uio, buf, count, UIO_READ, 0)) < 0)
{
return err;
}
err = cdev->d->read (cdev->instance, &fi, &uio, count);
return err;
}
static ssize_t
oss_cdev_write (oss_file_handle_t * file, char *buf, size_t count,
loff_t * offs)
{
oss_native_word d = (oss_native_word) oss_file_get_private (file);
int dev = d;
oss_cdev_t *cdev;
int err;
uio_t uio;
struct fileinfo fi;
cpy_file (file, &fi);
if (dev > oss_num_cdevs)
return OSS_ENXIO;
if ((cdev = oss_cdevs[dev]) == NULL || cdev->d->write == NULL)
{
return OSS_ENXIO;
}
if ((err = oss_create_uio (&uio, buf, count, UIO_WRITE, 0)) < 0)
{
return err;
}
err = cdev->d->write (cdev->instance, &fi, &uio, count);
return err;
}
static int
oss_cdev_ioctl (oss_inode_handle_t * inode, oss_file_handle_t * file,
unsigned int cmd, unsigned long arg)
{
oss_native_word d = (oss_native_word) oss_file_get_private (file);
int dev = d;
oss_cdev_t *cdev;
int err;
int localbuf[64]; /* 256 bytes is the largest frequently used ioctl size */
int len = 0;
int alloced = 0;
int *ptr = (int *) arg;
struct fileinfo fi;
cpy_file (file, &fi);
if (dev > oss_num_cdevs)
return OSS_ENXIO;
if ((cdev = oss_cdevs[dev]) == NULL || cdev->d->ioctl == NULL)
{
return OSS_ENXIO;
}
if (__SIOC_DIR (cmd) != __SIOC_NONE && __SIOC_DIR (cmd) != 0)
{
len = __SIOC_SIZE (cmd);
if (len < 1 || len > 65536 || arg == 0)
{
cmn_err (CE_WARN, "Bad ioctl command %x, %d, %x\n", cmd, len, arg);
return OSS_EFAULT;
}
/* Use statically allocated buffer for short arguments */
if (len > sizeof (localbuf))
{
ptr = KERNEL_MALLOC (len);
alloced = 1;
}
else
ptr = localbuf;
if (ptr == NULL || arg == 0)
{
return OSS_EFAULT;
}
if (__SIOC_DIR (cmd) & __SIOC_WRITE)
{
if (oss_copy_from_user (ptr, (char *) arg, len))
{
if (alloced)
KERNEL_FREE (ptr);
return OSS_EFAULT;
}
}
}
if ((err = cdev->d->ioctl (cdev->instance, &fi, cmd, (ioctl_arg) ptr)) < 0)
{
if (alloced)
KERNEL_FREE (ptr);
return err;
}
if (__SIOC_DIR (cmd) & __SIOC_READ)
{
if (oss_copy_to_user ((char *) arg, ptr, len))
{
if (alloced)
KERNEL_FREE (ptr);
return OSS_EFAULT;
}
}
/* Free the local buffer unless it was statically allocated */
if (ptr != NULL && alloced)
if (len > sizeof (localbuf))
KERNEL_FREE (ptr);
return ((err < 0) ? err : 0);
}
/* No BKL if this is used */
static long
oss_cdev_unlocked_ioctl (oss_file_handle_t * file, unsigned int cmd,
unsigned long arg)
{
return oss_cdev_ioctl (NULL, file, cmd, arg);
}
/* Used for 32 bit clients on a 64 bit kernel. No BKL here either */
static long
oss_cdev_compat_ioctl (oss_file_handle_t * file, unsigned int cmd,
unsigned long arg)
{
return oss_cdev_ioctl (NULL, file, cmd, arg);
}
static unsigned int
oss_cdev_poll (oss_file_handle_t * file, oss_poll_table_handle_t * wait)
{
oss_poll_event_t ev;
oss_native_word d = (oss_native_word) oss_file_get_private (file);
int dev = d;
oss_cdev_t *cdev;
int err;
struct fileinfo fi;
cpy_file (file, &fi);
if (dev > oss_num_cdevs)
return OSS_ENXIO;
if ((cdev = oss_cdevs[dev]) == NULL || cdev->d->chpoll == NULL)
{
return OSS_ENXIO;
}
ev.wait = wait;
ev.file = file;
ev.events = POLLOUT | POLLWRNORM | POLLIN | POLLRDNORM;
ev.revents = 0;
err = cdev->d->chpoll (cdev->instance, &fi, &ev);
if (err < 0)
{
return err;
}
return ev.revents;
}
static int
oss_cdev_mmap (oss_file_handle_t * file, oss_vm_area_handle_t * vma)
{
oss_native_word d = (oss_native_word) oss_file_get_private (file);
int dev = d;
oss_cdev_t *cdev;
dmap_p dmap = NULL;
int err;
if (dev > oss_num_cdevs)
return OSS_ENXIO;
if ((cdev = oss_cdevs[dev]) == NULL)
{
return OSS_ENXIO;
}
if (cdev->dev_class != OSS_DEV_DSP && cdev->dev_class != OSS_DEV_DSP_ENGINE) /* Only mmap audio devices */
{
return OSS_ENXIO;
}
dev = cdev->instance;
if (dev < 0 || dev >= num_audio_engines)
return OSS_ENXIO;
if (audio_engines[dev]->flags & ADEV_NOMMAP)
return OSS_EIO;
if (oss_vma_get_flags (vma) & VM_WRITE) /* Map write and read/write to the output buf */
{
dmap = audio_engines[dev]->dmap_out;
}
else if (oss_vma_get_flags (vma) & VM_READ)
{
dmap = audio_engines[dev]->dmap_in;
}
else
{
cmn_err (CE_WARN, "Undefined mmap() access\n");
return OSS_EINVAL;
}
if (dmap == NULL)
{
cmn_err (CE_WARN, "mmap() error. dmap == NULL\n");
return OSS_EIO;
}
if (dmap->dmabuf == NULL)
{
cmn_err (CE_WARN, "mmap() called when raw_buf == NULL\n");
return OSS_EIO;
}
if (dmap->dmabuf_phys == 0)
{
cmn_err (CE_WARN, "mmap() not supported by device /dev/dsp%d.\n", dev);
return OSS_EIO;
}
if (dmap->mapping_flags)
{
cmn_err (CE_WARN, "mmap() called twice for the same DMA buffer\n");
return OSS_EIO;
}
if (dmap->flags & DMAP_COOKED)
{
cmn_err (CE_WARN,
"mmap() not possible with currently selected sample format.\n");
return OSS_EIO;
}
if ((err = oss_do_mmap (vma, dmap->dmabuf_phys, dmap->bytes_in_use)) < 0)
return err;
dmap->mapping_flags |= DMA_MAP_MAPPED;
memset (dmap->dmabuf, dmap->neutral_byte, dmap->bytes_in_use);
return 0;
}
oss_file_operation_handle_t oss_fops = {
oss_cdev_read,
oss_cdev_write,
NULL, /* oss_readdir */
oss_cdev_poll,
oss_cdev_ioctl,
oss_cdev_mmap,
oss_cdev_open,
oss_cdev_release,
oss_cdev_compat_ioctl,
oss_cdev_unlocked_ioctl
};
static int
hookup_cdevsw (oss_device_t * osdev)
{
return oss_register_chrdev (osdev, osscore_major, "osscore", &oss_fops);
}
int
oss_request_major (oss_device_t * osdev, int major, char *module)
{
int err;
err = oss_register_chrdev (osdev, major, module, &oss_fops);
return err;
}
static int
grow_array(oss_device_t *osdev, oss_cdev_t ***arr, int *size, int increment)
{
oss_cdev_t **old=*arr, **new = *arr;
int old_size = *size;
int new_size = *size;
new_size += increment;
if ((new=PMALLOC(osdev, new_size * sizeof (oss_cdev_t *)))==NULL)
return 0;
memset(new, 0, new_size * sizeof(oss_cdev_t *));
if (old != NULL)
memcpy(new, old, old_size * sizeof(oss_cdev_t *));
*size = new_size;
*arr = new;
if (old != NULL)
PMFREE(osdev, old);
return 1;
}
void
oss_install_chrdev (oss_device_t * osdev, char *name, int dev_class,
int instance, oss_cdev_drv_t * drv, int flags)
{
oss_install_chrdev creates a character device (minor). However if name==NULL the device will not be exported (made visible to userland clients).
int num;
oss_cdev_t *cdev = NULL;
if (osdev->major == 0)
{
cmn_err (CE_WARN, "Module %s major=0\n", osdev->nick);
return;
}
if (osdev->major < 0)
{
cmn_err (CE_WARN, "Failed to allocate major device for %s\n",
osdev->nick);
}
if (dev_class != OSS_DEV_STATUS)
if (oss_expired && instance > 0)
return;
Find if this dev_class&instance already exists (after previous module detach).
for (num = 0; num < oss_num_cdevs; num++)
if (oss_cdevs[num]->d == NULL) /* Unloaded driver */
if (oss_cdevs[num]->dev_class == dev_class
&& oss_cdevs[num]->instance == instance)
{
cdev = oss_cdevs[num];
break;
}
if (cdev == NULL)
{
if (oss_num_cdevs >= OSS_MAX_CDEVS)
{
if (!grow_array(osdev, &oss_cdevs, &oss_max_cdevs, 100))
{
cmn_err (CE_WARN, "Out of minor numbers.\n");
return;
}
}
if ((cdev = PMALLOC (NULL, sizeof (*cdev))) == NULL)
{
cmn_err (CE_WARN, "Cannot allocate character device desc.\n");
return;
}
num = oss_num_cdevs++;
}
memset (cdev, 0, sizeof (*cdev));
cdev->dev_class = dev_class;
cdev->instance = instance;
cdev->d = drv;
cdev->osdev = osdev;
if (name != NULL)
strncpy (cdev->name, name, sizeof (cdev->name));
else
strcpy (cdev->name, "NONE");
cdev->name[sizeof (cdev->name) - 1] = 0;
oss_cdevs[num] = cdev;
Export the device only if name != NULL
if (name != NULL)
{
strcpy (cdev->name, name);
oss_register_minor (osdev->major, num, name);
}
}
int
oss_init_osscore (oss_device_t * osdev)
{
#ifdef LICENSED_VERSION
if (!oss_license_handle_time (oss_get_time ()))
{
cmn_err (CE_WARN, "This version of Open Sound System has expired\n");
cmn_err (CE_CONT,
"Please download the latest version from www.opensound.com\n");
oss_expired = 1;
}
#endif
if ((osscore_major = hookup_cdevsw (osdev)) < 0)
{
cmn_err (CE_WARN, "Failed to allocate character major number %d\n",
osscore_major);
return OSS_EBUSY;
}
osdev->major = osscore_major;
oss_register_device (osdev, "OSS core services");
oss_common_init (osdev);
return 0;
}
void
oss_uninit_osscore (oss_device_t * osdev)
{
oss_unload_drivers ();
// free_all_irqs (); /* If something was left allocated by accident */
oss_unregister_chrdev (osscore_major, "osscore");
}
oss_pmalloc() is only used by usb_wraper.inc.
void *
oss_pmalloc (size_t sz)
{
return oss_memblk_malloc(&oss_global_memblk, sz);
}