diff options
Diffstat (limited to 'kernel/OS/Linux/os_linux.c')
| -rw-r--r-- | kernel/OS/Linux/os_linux.c | 1034 |
1 files changed, 1034 insertions, 0 deletions
diff --git a/kernel/OS/Linux/os_linux.c b/kernel/OS/Linux/os_linux.c new file mode 100644 index 0000000..c47f3da --- /dev/null +++ b/kernel/OS/Linux/os_linux.c @@ -0,0 +1,1034 @@ +/* + * Purpose: Operating system abstraction functions for Linux + */ +/* + * + * 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); +} |