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Diffstat (limited to 'linux-core/drm_lock.c')
-rw-r--r--linux-core/drm_lock.c115
1 files changed, 1 insertions, 114 deletions
diff --git a/linux-core/drm_lock.c b/linux-core/drm_lock.c
index e9b17cc4..cc9571ed 100644
--- a/linux-core/drm_lock.c
+++ b/linux-core/drm_lock.c
@@ -32,19 +32,13 @@
#define __NO_VERSION__
#include "drmP.h"
-int DRM(block)(struct inode *inode, struct file *filp, unsigned int cmd,
+int DRM(noop)(struct inode *inode, struct file *filp, unsigned int cmd,
unsigned long arg)
{
DRM_DEBUG("\n");
return 0;
}
-int DRM(unblock)(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
-{
- DRM_DEBUG("\n");
- return 0;
-}
int DRM(lock_take)(__volatile__ unsigned int *lock, unsigned int context)
{
@@ -109,113 +103,6 @@ int DRM(lock_free)(drm_device_t *dev,
return 0;
}
-static int DRM(flush_queue)(drm_device_t *dev, int context)
-{
- DECLARE_WAITQUEUE(entry, current);
- int ret = 0;
- drm_queue_t *q = dev->queuelist[context];
-
- DRM_DEBUG("\n");
-
- atomic_inc(&q->use_count);
- if (atomic_read(&q->use_count) > 1) {
- atomic_inc(&q->block_write);
- add_wait_queue(&q->flush_queue, &entry);
- atomic_inc(&q->block_count);
- for (;;) {
- current->state = TASK_INTERRUPTIBLE;
- if (!DRM_BUFCOUNT(&q->waitlist)) break;
- schedule();
- if (signal_pending(current)) {
- ret = -EINTR; /* Can't restart */
- break;
- }
- }
- atomic_dec(&q->block_count);
- current->state = TASK_RUNNING;
- remove_wait_queue(&q->flush_queue, &entry);
- }
- atomic_dec(&q->use_count);
-
- /* NOTE: block_write is still incremented!
- Use drm_flush_unlock_queue to decrement. */
- return ret;
-}
-
-static int DRM(flush_unblock_queue)(drm_device_t *dev, int context)
-{
- drm_queue_t *q = dev->queuelist[context];
-
- DRM_DEBUG("\n");
-
- atomic_inc(&q->use_count);
- if (atomic_read(&q->use_count) > 1) {
- if (atomic_read(&q->block_write)) {
- atomic_dec(&q->block_write);
- wake_up_interruptible(&q->write_queue);
- }
- }
- atomic_dec(&q->use_count);
- return 0;
-}
-
-int DRM(flush_block_and_flush)(drm_device_t *dev, int context,
- drm_lock_flags_t flags)
-{
- int ret = 0;
- int i;
-
- DRM_DEBUG("\n");
-
- if (flags & _DRM_LOCK_FLUSH) {
- ret = DRM(flush_queue)(dev, DRM_KERNEL_CONTEXT);
- if (!ret) ret = DRM(flush_queue)(dev, context);
- }
- if (flags & _DRM_LOCK_FLUSH_ALL) {
- for (i = 0; !ret && i < dev->queue_count; i++) {
- ret = DRM(flush_queue)(dev, i);
- }
- }
- return ret;
-}
-
-int DRM(flush_unblock)(drm_device_t *dev, int context, drm_lock_flags_t flags)
-{
- int ret = 0;
- int i;
-
- DRM_DEBUG("\n");
-
- if (flags & _DRM_LOCK_FLUSH) {
- ret = DRM(flush_unblock_queue)(dev, DRM_KERNEL_CONTEXT);
- if (!ret) ret = DRM(flush_unblock_queue)(dev, context);
- }
- if (flags & _DRM_LOCK_FLUSH_ALL) {
- for (i = 0; !ret && i < dev->queue_count; i++) {
- ret = DRM(flush_unblock_queue)(dev, i);
- }
- }
-
- return ret;
-}
-
-int DRM(finish)(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;
- int ret = 0;
- drm_lock_t lock;
-
- DRM_DEBUG("\n");
-
- if (copy_from_user(&lock, (drm_lock_t *)arg, sizeof(lock)))
- return -EFAULT;
- ret = DRM(flush_block_and_flush)(dev, lock.context, lock.flags);
- DRM(flush_unblock)(dev, lock.context, lock.flags);
- return ret;
-}
-
/* If we get here, it means that the process has called DRM_IOCTL_LOCK
without calling DRM_IOCTL_UNLOCK.