1 files changed, 139 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/core/parent.c b/drivers/gpu/drm/nouveau/core/core/parent.c
new file mode 100644
index 000000000000..a1ea034611d5
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/core/parent.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright 2012 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs
+ */
+
+#include <core/object.h>
+#include <core/parent.h>
+
+int
+nouveau_parent_sclass(struct nouveau_object *parent, u16 handle,
+		      struct nouveau_object **pengine,
+		      struct nouveau_oclass **poclass)
+{
+	struct nouveau_sclass *sclass;
+	struct nouveau_engine *engine;
+	struct nouveau_oclass *oclass;
+	u64 mask;
+
+	sclass = nv_parent(parent)->sclass;
+	while (sclass) {
+		if ((sclass->oclass->handle & 0xffff) == handle) {
+			*pengine = parent->engine;
+			*poclass = sclass->oclass;
+			return 0;
+		}
+
+		sclass = sclass->sclass;
+	}
+
+	mask = nv_parent(parent)->engine;
+	while (mask) {
+		int i = ffsll(mask) - 1;
+
+		if ((engine = nouveau_engine(parent, i))) {
+			oclass = engine->sclass;
+			while (oclass->ofuncs) {
+				if ((oclass->handle & 0xffff) == handle) {
+					*pengine = nv_object(engine);
+					*poclass = oclass;
+					return 0;
+				}
+				oclass++;
+			}
+		}
+
+		mask &= ~(1ULL << i);
+	}
+
+	return -EINVAL;
+}
+
+int
+nouveau_parent_create_(struct nouveau_object *parent,
+		       struct nouveau_object *engine,
+		       struct nouveau_oclass *oclass, u32 pclass,
+		       struct nouveau_oclass *sclass, u64 engcls,
+		       int size, void **pobject)
+{
+	struct nouveau_parent *object;
+	struct nouveau_sclass *nclass;
+	int ret;
+
+	ret = nouveau_object_create_(parent, engine, oclass, pclass |
+				     NV_PARENT_CLASS, size, pobject);
+	object = *pobject;
+	if (ret)
+		return ret;
+
+	while (sclass && sclass->ofuncs) {
+		nclass = kzalloc(sizeof(*nclass), GFP_KERNEL);
+		if (!nclass)
+			return -ENOMEM;
+
+		nclass->sclass = object->sclass;
+		object->sclass = nclass;
+		nclass->engine = engine ? nv_engine(engine) : NULL;
+		nclass->oclass = sclass;
+		sclass++;
+	}
+
+	object->engine = engcls;
+	return 0;
+}
+
+int
+_nouveau_parent_ctor(struct nouveau_object *parent,
+		     struct nouveau_object *engine,
+		     struct nouveau_oclass *oclass, void *data, u32 size,
+		     struct nouveau_object **pobject)
+{
+	struct nouveau_parent *object;
+	int ret;
+
+	ret = nouveau_parent_create(parent, engine, oclass, 0, NULL, 0, &object);
+	*pobject = nv_object(object);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+void
+nouveau_parent_destroy(struct nouveau_parent *parent)
+{
+	struct nouveau_sclass *sclass;
+
+	while ((sclass = parent->sclass)) {
+		parent->sclass = sclass->sclass;
+		kfree(sclass);
+	}
+
+	nouveau_object_destroy(&parent->base);
+}
+
+
+void
+_nouveau_parent_dtor(struct nouveau_object *object)
+{
+	nouveau_parent_destroy(nv_parent(object));
+}