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Diffstat (limited to 'linux-core/drm_drv.c')
-rw-r--r--linux-core/drm_drv.c507
1 files changed, 7 insertions, 500 deletions
diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c
index c9958815..630e29dc 100644
--- a/linux-core/drm_drv.c
+++ b/linux-core/drm_drv.c
@@ -142,82 +142,6 @@ drm_ioctl_desc_t drm_ioctls[] = {
#define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( drm_ioctls )
-static int drm_setup( drm_device_t *dev )
-{
- int i;
-
- if (dev->fn_tbl->presetup)
- dev->fn_tbl->presetup(dev);
-
- atomic_set( &dev->ioctl_count, 0 );
- atomic_set( &dev->vma_count, 0 );
- dev->buf_use = 0;
- atomic_set( &dev->buf_alloc, 0 );
-
- if (drm_core_check_feature(dev, DRIVER_HAVE_DMA))
- {
- i = drm_dma_setup( dev );
- if ( i < 0 )
- return i;
- }
-
- for ( i = 0 ; i < DRM_ARRAY_SIZE(dev->counts) ; i++ )
- atomic_set( &dev->counts[i], 0 );
-
- for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) {
- dev->magiclist[i].head = NULL;
- dev->magiclist[i].tail = NULL;
- }
-
- dev->ctxlist = drm_alloc(sizeof(*dev->ctxlist),
- DRM_MEM_CTXLIST);
- if(dev->ctxlist == NULL) return -ENOMEM;
- memset(dev->ctxlist, 0, sizeof(*dev->ctxlist));
- INIT_LIST_HEAD(&dev->ctxlist->head);
-
- dev->vmalist = NULL;
- dev->sigdata.lock = dev->lock.hw_lock = NULL;
- init_waitqueue_head( &dev->lock.lock_queue );
- dev->queue_count = 0;
- dev->queue_reserved = 0;
- dev->queue_slots = 0;
- dev->queuelist = NULL;
- dev->irq_enabled = 0;
- dev->context_flag = 0;
- dev->interrupt_flag = 0;
- dev->dma_flag = 0;
- dev->last_context = 0;
- dev->last_switch = 0;
- dev->last_checked = 0;
- init_waitqueue_head( &dev->context_wait );
- dev->if_version = 0;
-
- dev->ctx_start = 0;
- dev->lck_start = 0;
-
- dev->buf_rp = dev->buf;
- dev->buf_wp = dev->buf;
- dev->buf_end = dev->buf + DRM_BSZ;
- dev->buf_async = NULL;
- init_waitqueue_head( &dev->buf_readers );
- init_waitqueue_head( &dev->buf_writers );
-
- DRM_DEBUG( "\n" );
-
- /*
- * The kernel's context could be created here, but is now created
- * in drm_dma_enqueue. This is more resource-efficient for
- * hardware that does not do DMA, but may mean that
- * drm_select_queue fails between the time the interrupt is
- * initialized and the time the queues are initialized.
- */
- if (dev->fn_tbl->postsetup)
- dev->fn_tbl->postsetup(dev);
-
- return 0;
-}
-
-
/**
* Take down the DRM device.
*
@@ -227,7 +151,7 @@ static int drm_setup( drm_device_t *dev )
*
* \sa drm_device and setup().
*/
-static int drm_takedown( drm_device_t *dev )
+int drm_takedown( drm_device_t *dev )
{
drm_magic_entry_t *pt, *next;
drm_map_t *map;
@@ -362,87 +286,6 @@ static int drm_takedown( drm_device_t *dev )
return 0;
}
-int drm_fill_in_dev(drm_device_t *dev, struct pci_dev *pdev, const struct pci_device_id *ent, struct drm_driver_fn *driver_fn)
-{
- int retcode;
-
- dev->count_lock = SPIN_LOCK_UNLOCKED;
- init_timer( &dev->timer );
- sema_init( &dev->struct_sem, 1 );
- sema_init( &dev->ctxlist_sem, 1 );
-
- dev->name = DRIVER_NAME;
- dev->pdev = pdev;
-
-#ifdef __alpha__
- dev->hose = pdev->sysdata;
- dev->pci_domain = dev->hose->bus->number;
-#else
- dev->pci_domain = 0;
-#endif
- dev->pci_bus = pdev->bus->number;
- dev->pci_slot = PCI_SLOT(pdev->devfn);
- dev->pci_func = PCI_FUNC(pdev->devfn);
- dev->irq = pdev->irq;
-
- dev->maplist = drm_calloc(1, sizeof(*dev->maplist), DRM_MEM_MAPS);
- if(dev->maplist == NULL) return -ENOMEM;
- INIT_LIST_HEAD(&dev->maplist->head);
-
- /* the DRM has 6 counters */
- dev->counters = 6;
- dev->types[0] = _DRM_STAT_LOCK;
- dev->types[1] = _DRM_STAT_OPENS;
- dev->types[2] = _DRM_STAT_CLOSES;
- dev->types[3] = _DRM_STAT_IOCTLS;
- dev->types[4] = _DRM_STAT_LOCKS;
- dev->types[5] = _DRM_STAT_UNLOCKS;
-
- dev->fn_tbl = driver_fn;
-
- if (dev->fn_tbl->preinit)
- if ((retcode = dev->fn_tbl->preinit(dev, ent->driver_data)))
- goto error_out_unreg;
-
- if (drm_core_has_AGP(dev)) {
- dev->agp = drm_agp_init();
- if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) && (dev->agp == NULL)) {
- DRM_ERROR( "Cannot initialize the agpgart module.\n" );
- retcode = -EINVAL;
- goto error_out_unreg;
- }
-
-
- if (drm_core_has_MTRR(dev)) {
- if (dev->agp)
- dev->agp->agp_mtrr = mtrr_add( dev->agp->agp_info.aper_base,
- dev->agp->agp_info.aper_size*1024*1024,
- MTRR_TYPE_WRCOMB,
- 1 );
- }
- }
-
- retcode = drm_ctxbitmap_init( dev );
- if( retcode ) {
- DRM_ERROR( "Cannot allocate memory for context bitmap.\n" );
- goto error_out_unreg;
- }
-
- dev->device = MKDEV(DRM_MAJOR, dev->minor );
-DRM_DEBUG("driver_fn->postinit %p\n", driver_fn->postinit);
-
- /* postinit is a required function to display the signon banner */
- /* drivers add secondary heads here if needed */
- if ((retcode = dev->fn_tbl->postinit(dev, ent->driver_data)))
- goto error_out_unreg;
-
- return 0;
-
- error_out_unreg:
- drm_takedown(dev);
- return retcode;
-}
-
void __exit drm_cleanup_pci(struct pci_dev *pdev)
{
drm_device_t *dev = pci_get_drvdata(pdev);
@@ -630,6 +473,12 @@ void __exit drm_exit (struct pci_driver *driver)
}
EXPORT_SYMBOL(drm_exit);
+/** File operations structure */
+static struct file_operations drm_stub_fops = {
+ .owner = THIS_MODULE,
+ .open = drm_stub_open
+};
+
static int __init drm_core_init(void)
{
int ret = -ENOMEM;
@@ -725,210 +574,6 @@ int drm_version( struct inode *inode, struct file *filp,
return 0;
}
-/**
- * Open file.
- *
- * \param inode device inode
- * \param filp file pointer.
- * \return zero on success or a negative number on failure.
- *
- * Searches the DRM device with the same minor number, calls open_helper(), and
- * increments the device open count. If the open count was previous at zero,
- * i.e., it's the first that the device is open, then calls setup().
- */
-int drm_open( struct inode *inode, struct file *filp )
-{
- drm_device_t *dev = NULL;
- int minor = iminor(inode);
- int retcode = 0;
-
- if (!((minor >= 0) && (minor < cards_limit)))
- return -ENODEV;
-
- dev = drm_minors[minor].dev;
- if (!dev)
- return -ENODEV;
-
- retcode = drm_open_helper( inode, filp, dev );
- if ( !retcode ) {
- atomic_inc( &dev->counts[_DRM_STAT_OPENS] );
- spin_lock( &dev->count_lock );
- if ( !dev->open_count++ ) {
- spin_unlock( &dev->count_lock );
- return drm_setup( dev );
- }
- spin_unlock( &dev->count_lock );
- }
-
- return retcode;
-}
-EXPORT_SYMBOL(drm_open);
-
-/**
- * Release file.
- *
- * \param inode device inode
- * \param filp file pointer.
- * \return zero on success or a negative number on failure.
- *
- * If the hardware lock is held then free it, and take it again for the kernel
- * context since it's necessary to reclaim buffers. Unlink the file private
- * data from its list and free it. Decreases the open count and if it reaches
- * zero calls takedown().
- */
-int drm_release( struct inode *inode, struct file *filp )
-{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev;
- int retcode = 0;
-
- lock_kernel();
- dev = priv->dev;
-
- DRM_DEBUG( "open_count = %d\n", dev->open_count );
-
- if (dev->fn_tbl->prerelease)
- dev->fn_tbl->prerelease(dev, filp);
-
- /* ========================================================
- * Begin inline drm_release
- */
-
- DRM_DEBUG( "pid = %d, device = 0x%lx, open_count = %d\n",
- current->pid, (long)old_encode_dev(dev->device), dev->open_count );
-
- if ( priv->lock_count && dev->lock.hw_lock &&
- _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) &&
- dev->lock.filp == filp ) {
- DRM_DEBUG( "File %p released, freeing lock for context %d\n",
- filp,
- _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock) );
-
- if (dev->fn_tbl->release)
- dev->fn_tbl->release(dev, filp);
-
- drm_lock_free( dev, &dev->lock.hw_lock->lock,
- _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock) );
-
- /* FIXME: may require heavy-handed reset of
- hardware at this point, possibly
- processed via a callback to the X
- server. */
- }
- else if ( dev->fn_tbl->release && priv->lock_count && dev->lock.hw_lock ) {
- /* The lock is required to reclaim buffers */
- DECLARE_WAITQUEUE( entry, current );
-
- add_wait_queue( &dev->lock.lock_queue, &entry );
- for (;;) {
- current->state = TASK_INTERRUPTIBLE;
- if ( !dev->lock.hw_lock ) {
- /* Device has been unregistered */
- retcode = -EINTR;
- break;
- }
- if ( drm_lock_take( &dev->lock.hw_lock->lock,
- DRM_KERNEL_CONTEXT ) ) {
- dev->lock.filp = filp;
- dev->lock.lock_time = jiffies;
- atomic_inc( &dev->counts[_DRM_STAT_LOCKS] );
- break; /* Got lock */
- }
- /* Contention */
- schedule();
- if ( signal_pending( current ) ) {
- retcode = -ERESTARTSYS;
- break;
- }
- }
- current->state = TASK_RUNNING;
- remove_wait_queue( &dev->lock.lock_queue, &entry );
- if( !retcode ) {
- if (dev->fn_tbl->release)
- dev->fn_tbl->release(dev, filp);
- drm_lock_free( dev, &dev->lock.hw_lock->lock,
- DRM_KERNEL_CONTEXT );
- }
- }
-
- if (drm_core_check_feature(dev, DRIVER_HAVE_DMA))
- {
- dev->fn_tbl->reclaim_buffers(filp);
- }
-
- drm_fasync( -1, filp, 0 );
-
- down( &dev->ctxlist_sem );
- if ( !list_empty( &dev->ctxlist->head ) ) {
- drm_ctx_list_t *pos, *n;
-
- list_for_each_entry_safe( pos, n, &dev->ctxlist->head, head ) {
- if ( pos->tag == priv &&
- pos->handle != DRM_KERNEL_CONTEXT ) {
- if (dev->fn_tbl->context_dtor)
- dev->fn_tbl->context_dtor(dev, pos->handle);
-
- drm_ctxbitmap_free( dev, pos->handle );
-
- list_del( &pos->head );
- drm_free( pos, sizeof(*pos), DRM_MEM_CTXLIST );
- --dev->ctx_count;
- }
- }
- }
- up( &dev->ctxlist_sem );
-
- down( &dev->struct_sem );
- if ( priv->remove_auth_on_close == 1 ) {
- drm_file_t *temp = dev->file_first;
- while ( temp ) {
- temp->authenticated = 0;
- temp = temp->next;
- }
- }
- if ( priv->prev ) {
- priv->prev->next = priv->next;
- } else {
- dev->file_first = priv->next;
- }
- if ( priv->next ) {
- priv->next->prev = priv->prev;
- } else {
- dev->file_last = priv->prev;
- }
- up( &dev->struct_sem );
-
- if (dev->fn_tbl->free_filp_priv)
- dev->fn_tbl->free_filp_priv( dev, priv );
- drm_free( priv, sizeof(*priv), DRM_MEM_FILES );
-
- /* ========================================================
- * End inline drm_release
- */
-
- atomic_inc( &dev->counts[_DRM_STAT_CLOSES] );
- spin_lock( &dev->count_lock );
- if ( !--dev->open_count ) {
- if ( atomic_read( &dev->ioctl_count ) || dev->blocked ) {
- DRM_ERROR( "Device busy: %d %d\n",
- atomic_read( &dev->ioctl_count ),
- dev->blocked );
- spin_unlock( &dev->count_lock );
- unlock_kernel();
- return -EBUSY;
- }
- spin_unlock( &dev->count_lock );
- unlock_kernel();
- return drm_takedown( dev );
- }
- spin_unlock( &dev->count_lock );
-
- unlock_kernel();
-
- return retcode;
-}
-EXPORT_SYMBOL(drm_release);
-
/**
* Called whenever a process performs an ioctl on /dev/drm.
*
@@ -986,141 +631,3 @@ err_i1:
}
EXPORT_SYMBOL(drm_ioctl);
-/**
- * Lock ioctl.
- *
- * \param inode device inode.
- * \param filp file pointer.
- * \param cmd command.
- * \param arg user argument, pointing to a drm_lock structure.
- * \return zero on success or negative number on failure.
- *
- * Add the current task to the lock wait queue, and attempt to take to lock.
- */
-int drm_lock( struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg )
-{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->dev;
- DECLARE_WAITQUEUE( entry, current );
- drm_lock_t lock;
- int ret = 0;
-
- ++priv->lock_count;
-
- if ( copy_from_user( &lock, (drm_lock_t __user *)arg, sizeof(lock) ) )
- return -EFAULT;
-
- if ( lock.context == DRM_KERNEL_CONTEXT ) {
- DRM_ERROR( "Process %d using kernel context %d\n",
- current->pid, lock.context );
- return -EINVAL;
- }
-
- DRM_DEBUG( "%d (pid %d) requests lock (0x%08x), flags = 0x%08x\n",
- lock.context, current->pid,
- dev->lock.hw_lock->lock, lock.flags );
-
- if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE))
- if ( lock.context < 0 )
- return -EINVAL;
-
- add_wait_queue( &dev->lock.lock_queue, &entry );
- for (;;) {
- current->state = TASK_INTERRUPTIBLE;
- if ( !dev->lock.hw_lock ) {
- /* Device has been unregistered */
- ret = -EINTR;
- break;
- }
- if ( drm_lock_take( &dev->lock.hw_lock->lock,
- lock.context ) ) {
- dev->lock.filp = filp;
- dev->lock.lock_time = jiffies;
- atomic_inc( &dev->counts[_DRM_STAT_LOCKS] );
- break; /* Got lock */
- }
-
- /* Contention */
- schedule();
- if ( signal_pending( current ) ) {
- ret = -ERESTARTSYS;
- break;
- }
- }
- current->state = TASK_RUNNING;
- remove_wait_queue( &dev->lock.lock_queue, &entry );
-
- sigemptyset( &dev->sigmask );
- sigaddset( &dev->sigmask, SIGSTOP );
- sigaddset( &dev->sigmask, SIGTSTP );
- sigaddset( &dev->sigmask, SIGTTIN );
- sigaddset( &dev->sigmask, SIGTTOU );
- dev->sigdata.context = lock.context;
- dev->sigdata.lock = dev->lock.hw_lock;
- block_all_signals( drm_notifier,
- &dev->sigdata, &dev->sigmask );
-
- if (dev->fn_tbl->dma_ready && (lock.flags & _DRM_LOCK_READY))
- dev->fn_tbl->dma_ready(dev);
-
- if ( dev->fn_tbl->dma_quiescent && (lock.flags & _DRM_LOCK_QUIESCENT ))
- return dev->fn_tbl->dma_quiescent(dev);
-
-
- if ( dev->fn_tbl->kernel_context_switch && dev->last_context != lock.context ) {
- dev->fn_tbl->kernel_context_switch(dev, dev->last_context,
- lock.context);
- }
-
-
- DRM_DEBUG( "%d %s\n", lock.context, ret ? "interrupted" : "has lock" );
-
- return ret;
-}
-
-/**
- * Unlock ioctl.
- *
- * \param inode device inode.
- * \param filp file pointer.
- * \param cmd command.
- * \param arg user argument, pointing to a drm_lock structure.
- * \return zero on success or negative number on failure.
- *
- * Transfer and free the lock.
- */
-int drm_unlock( struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg )
-{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->dev;
- drm_lock_t lock;
-
- if ( copy_from_user( &lock, (drm_lock_t __user *)arg, sizeof(lock) ) )
- return -EFAULT;
-
- if ( lock.context == DRM_KERNEL_CONTEXT ) {
- DRM_ERROR( "Process %d using kernel context %d\n",
- current->pid, lock.context );
- return -EINVAL;
- }
-
- atomic_inc( &dev->counts[_DRM_STAT_UNLOCKS] );
-
- if (dev->fn_tbl->kernel_context_switch_unlock)
- dev->fn_tbl->kernel_context_switch_unlock(dev);
- else
- {
- drm_lock_transfer( dev, &dev->lock.hw_lock->lock,
- DRM_KERNEL_CONTEXT );
-
- if ( drm_lock_free( dev, &dev->lock.hw_lock->lock,
- DRM_KERNEL_CONTEXT ) ) {
- DRM_ERROR( "\n" );
- }
- }
-
- unblock_all_signals();
- return 0;
-}