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path: root/drivers/gpu/drm/drm_gem.c
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Diffstat (limited to 'drivers/gpu/drm/drm_gem.c')
-rw-r--r--drivers/gpu/drm/drm_gem.c47
1 files changed, 43 insertions, 4 deletions
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 4012fe42346..186d62eb063 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -129,7 +129,7 @@ drm_gem_destroy(struct drm_device *dev)
}
/**
- * Initialize an already allocate GEM object of the specified size with
+ * Initialize an already allocated GEM object of the specified size with
* shmfs backing store.
*/
int drm_gem_object_init(struct drm_device *dev,
@@ -151,6 +151,27 @@ int drm_gem_object_init(struct drm_device *dev,
EXPORT_SYMBOL(drm_gem_object_init);
/**
+ * Initialize an already allocated GEM object of the specified size with
+ * no GEM provided backing store. Instead the caller is responsible for
+ * backing the object and handling it.
+ */
+int drm_gem_private_object_init(struct drm_device *dev,
+ struct drm_gem_object *obj, size_t size)
+{
+ BUG_ON((size & (PAGE_SIZE - 1)) != 0);
+
+ obj->dev = dev;
+ obj->filp = NULL;
+
+ kref_init(&obj->refcount);
+ atomic_set(&obj->handle_count, 0);
+ obj->size = size;
+
+ return 0;
+}
+EXPORT_SYMBOL(drm_gem_private_object_init);
+
+/**
* Allocate a GEM object of the specified size with shmfs backing store
*/
struct drm_gem_object *
@@ -211,6 +232,8 @@ drm_gem_handle_delete(struct drm_file *filp, u32 handle)
idr_remove(&filp->object_idr, handle);
spin_unlock(&filp->table_lock);
+ if (dev->driver->gem_close_object)
+ dev->driver->gem_close_object(obj, filp);
drm_gem_object_handle_unreference_unlocked(obj);
return 0;
@@ -227,7 +250,8 @@ drm_gem_handle_create(struct drm_file *file_priv,
struct drm_gem_object *obj,
u32 *handlep)
{
- int ret;
+ struct drm_device *dev = obj->dev;
+ int ret;
/*
* Get the user-visible handle using idr.
@@ -248,6 +272,15 @@ again:
return ret;
drm_gem_object_handle_reference(obj);
+
+ if (dev->driver->gem_open_object) {
+ ret = dev->driver->gem_open_object(obj, file_priv);
+ if (ret) {
+ drm_gem_handle_delete(file_priv, *handlep);
+ return ret;
+ }
+ }
+
return 0;
}
EXPORT_SYMBOL(drm_gem_handle_create);
@@ -402,7 +435,12 @@ drm_gem_open(struct drm_device *dev, struct drm_file *file_private)
static int
drm_gem_object_release_handle(int id, void *ptr, void *data)
{
+ struct drm_file *file_priv = data;
struct drm_gem_object *obj = ptr;
+ struct drm_device *dev = obj->dev;
+
+ if (dev->driver->gem_close_object)
+ dev->driver->gem_close_object(obj, file_priv);
drm_gem_object_handle_unreference_unlocked(obj);
@@ -418,7 +456,7 @@ void
drm_gem_release(struct drm_device *dev, struct drm_file *file_private)
{
idr_for_each(&file_private->object_idr,
- &drm_gem_object_release_handle, NULL);
+ &drm_gem_object_release_handle, file_private);
idr_remove_all(&file_private->object_idr);
idr_destroy(&file_private->object_idr);
@@ -427,7 +465,8 @@ drm_gem_release(struct drm_device *dev, struct drm_file *file_private)
void
drm_gem_object_release(struct drm_gem_object *obj)
{
- fput(obj->filp);
+ if (obj->filp)
+ fput(obj->filp);
}
EXPORT_SYMBOL(drm_gem_object_release);