#endif
/**
- * Initialize the GEM device fields
+ * drm_gem_init - Initialize the GEM device fields
+ * @dev: drm_devic structure to initialize
*/
-
int
drm_gem_init(struct drm_device *dev)
{
}
/**
+ * drm_gem_object_init - initialize an allocated shmem-backed GEM object
+ * @dev: drm_device the object should be initialized for
+ * @obj: drm_gem_object to initialize
+ * @size: object size
+ *
* Initialize an already allocated GEM object of the specified size with
* shmfs backing store.
*/
EXPORT_SYMBOL(drm_gem_object_init);
/**
+ * drm_gem_object_init - initialize an allocated private GEM object
+ * @dev: drm_device the object should be initialized for
+ * @obj: drm_gem_object to initialize
+ * @size: object size
+ *
* 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.
}
/**
+ * drm_gem_object_free - release resources bound to userspace handles
+ * @obj: GEM object to clean up.
+ *
* Called after the last handle to the object has been closed
*
* Removes any name for the object. Note that this must be
}
/**
- * Removes the mapping from handle to filp for this object.
+ * drm_gem_handle_delete - deletes the given file-private handle
+ * @filp: drm file-private structure to use for the handle look up
+ * @handle: userspace handle to delete
+ *
+ * Removes the GEM handle from the @filp lookup table and if this is the last
+ * handle also cleans up linked resources like GEM names.
*/
int
drm_gem_handle_delete(struct drm_file *filp, u32 handle)
/**
* drm_gem_dumb_destroy - dumb fb callback helper for gem based drivers
+ * @file: drm file-private structure to remove the dumb handle from
+ * @dev: corresponding drm_device
+ * @handle: the dumb handle to remove
*
* This implements the ->dumb_destroy kms driver callback for drivers which use
* gem to manage their backing storage.
/**
* drm_gem_handle_create_tail - internal functions to create a handle
+ * @file_priv: drm file-private structure to register the handle for
+ * @obj: object to register
+ * @handlep: pionter to return the created handle to the caller
*
* This expects the dev->object_name_lock to be held already and will drop it
* before returning. Used to avoid races in establishing new handles when
}
/**
+ * gem_handle_create - create a gem handle for an object
+ * @file_priv: drm file-private structure to register the handle for
+ * @obj: object to register
+ * @handlep: pionter to return the created handle to the caller
+ *
* Create a handle for this object. This adds a handle reference
* to the object, which includes a regular reference count. Callers
* will likely want to dereference the object afterwards.
EXPORT_SYMBOL(drm_gem_object_lookup);
/**
+ * drm_gem_close_ioctl - implementation of the GEM_CLOSE ioctl
+ * @dev: drm_device
+ * @data: ioctl data
+ * @file_priv: drm file-private structure
+ *
* Releases the handle to an mm object.
*/
int
}
/**
+ * drm_gem_flink_ioctl - implementation of the GEM_FLINK ioctl
+ * @dev: drm_device
+ * @data: ioctl data
+ * @file_priv: drm file-private structure
+ *
* Create a global name for an object, returning the name.
*
* Note that the name does not hold a reference; when the object
}
/**
+ * drm_gem_open - implementation of the GEM_OPEN ioctl
+ * @dev: drm_device
+ * @data: ioctl data
+ * @file_priv: drm file-private structure
+ *
* Open an object using the global name, returning a handle and the size.
*
* This handle (of course) holds a reference to the object, so the object
}
/**
+ * gem_gem_open - initalizes GEM file-private structures at devnode open time
+ * @dev: drm_device which is being opened by userspace
+ * @file_private: drm file-private structure to set up
+ *
* Called at device open time, sets up the structure for handling refcounting
* of mm objects.
*/
spin_lock_init(&file_private->table_lock);
}
-/**
+/*
* Called at device close to release the file's
* handle references on objects.
*/
}
/**
+ * drm_gem_release - release file-private GEM resources
+ * @dev: drm_device which is being closed by userspace
+ * @file_private: drm file-private structure to clean up
+ *
* Called at close time when the filp is going away.
*
* Releases any remaining references on objects by this filp.
WARN_ON(obj->dma_buf);
if (obj->filp)
- fput(obj->filp);
+ fput(obj->filp);
+
+ drm_gem_free_mmap_offset(obj);
}
EXPORT_SYMBOL(drm_gem_object_release);
/**
+ * drm_gem_object_free - free a GEM object
+ * @kref: kref of the object to free
+ *
* Called after the last reference to the object has been lost.
* Must be called holding struct_ mutex
*
vma->vm_flags |= VM_IO | VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP;
vma->vm_ops = dev->driver->gem_vm_ops;
vma->vm_private_data = obj;
- vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags));
+ vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags));
/* Take a ref for this mapping of the object, so that the fault
* handler can dereference the mmap offset's pointer to the object.
struct drm_device *dev = priv->minor->dev;
struct drm_gem_object *obj;
struct drm_vma_offset_node *node;
- int ret = 0;
+ int ret;
if (drm_device_is_unplugged(dev))
return -ENODEV;
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