1 files changed, 113 insertions, 2 deletions

diff --git a/drivers/gpu/drm/nouveau/core/core/handle.c b/drivers/gpu/drm/nouveau/core/core/handle.c
index 264c2b338ac3..a490b805d7e3 100644
--- a/drivers/gpu/drm/nouveau/core/core/handle.c
+++ b/drivers/gpu/drm/nouveau/core/core/handle.c
@@ -146,9 +146,7 @@ nouveau_handle_create(struct nouveau_object *parent, u32 _parent, u32 _handle,
 	}
 
 	hprintk(handle, TRACE, "created\n");
-
 	*phandle = handle;
-
 	return 0;
 }
 
@@ -224,3 +222,116 @@ nouveau_handle_put(struct nouveau_handle *handle)
 	if (handle)
 		nouveau_namedb_put(handle);
 }
+
+int
+nouveau_handle_new(struct nouveau_object *client, u32 _parent, u32 _handle,
+		   u16 _oclass, void *data, u32 size,
+		   struct nouveau_object **pobject)
+{
+	struct nouveau_object *parent = NULL;
+	struct nouveau_object *engctx = NULL;
+	struct nouveau_object *object = NULL;
+	struct nouveau_object *engine;
+	struct nouveau_oclass *oclass;
+	struct nouveau_handle *handle;
+	int ret;
+
+	/* lookup parent object and ensure it *is* a parent */
+	parent = nouveau_handle_ref(client, _parent);
+	if (!parent) {
+		nv_error(client, "parent 0x%08x not found\n", _parent);
+		return -ENOENT;
+	}
+
+	if (!nv_iclass(parent, NV_PARENT_CLASS)) {
+		nv_error(parent, "cannot have children\n");
+		ret = -EINVAL;
+		goto fail_class;
+	}
+
+	/* check that parent supports the requested subclass */
+	ret = nouveau_parent_sclass(parent, _oclass, &engine, &oclass);
+	if (ret) {
+		nv_debug(parent, "illegal class 0x%04x\n", _oclass);
+		goto fail_class;
+	}
+
+	/* make sure engine init has been completed *before* any objects
+	 * it controls are created - the constructors may depend on
+	 * state calculated at init (ie. default context construction)
+	 */
+	if (engine) {
+		ret = nouveau_object_inc(engine);
+		if (ret)
+			goto fail_class;
+	}
+
+	/* if engine requires it, create a context object to insert
+	 * between the parent and its children (eg. PGRAPH context)
+	 */
+	if (engine && nv_engine(engine)->cclass) {
+		ret = nouveau_object_ctor(parent, engine,
+					  nv_engine(engine)->cclass,
+					  data, size, &engctx);
+		if (ret)
+			goto fail_engctx;
+	} else {
+		nouveau_object_ref(parent, &engctx);
+	}
+
+	/* finally, create new object and bind it to its handle */
+	ret = nouveau_object_ctor(engctx, engine, oclass, data, size, &object);
+	*pobject = object;
+	if (ret)
+		goto fail_ctor;
+
+	ret = nouveau_object_inc(object);
+	if (ret)
+		goto fail_init;
+
+	ret = nouveau_handle_create(parent, _parent, _handle, object, &handle);
+	if (ret)
+		goto fail_handle;
+
+	ret = nouveau_handle_init(handle);
+	if (ret)
+		nouveau_handle_destroy(handle);
+
+fail_handle:
+	nouveau_object_dec(object, false);
+fail_init:
+	nouveau_object_ref(NULL, &object);
+fail_ctor:
+	nouveau_object_ref(NULL, &engctx);
+fail_engctx:
+	if (engine)
+		nouveau_object_dec(engine, false);
+fail_class:
+	nouveau_object_ref(NULL, &parent);
+	return ret;
+}
+
+int
+nouveau_handle_del(struct nouveau_object *client, u32 _parent, u32 _handle)
+{
+	struct nouveau_object *parent = NULL;
+	struct nouveau_object *namedb = NULL;
+	struct nouveau_handle *handle = NULL;
+
+	parent = nouveau_handle_ref(client, _parent);
+	if (!parent)
+		return -ENOENT;
+
+	namedb = nv_pclass(parent, NV_NAMEDB_CLASS);
+	if (namedb) {
+		handle = nouveau_namedb_get(nv_namedb(namedb), _handle);
+		if (handle) {
+			nouveau_namedb_put(handle);
+			nouveau_handle_fini(handle, false);
+			nouveau_handle_destroy(handle);
+		}
+	}
+
+	nouveau_object_ref(NULL, &parent);
+	return handle ? 0 : -EINVAL;
+}