1 files changed, 159 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/core/parent.c b/drivers/gpu/drm/nouveau/nvkm/core/parent.c
new file mode 100644
index 000000000000..dd56cd1eeb38
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/core/parent.c
@@ -0,0 +1,159 @@
+/*
+ * 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/parent.h>
+#include <core/client.h>
+#include <core/engine.h>
+
+int
+nvkm_parent_sclass(struct nvkm_object *parent, u16 handle,
+		   struct nvkm_object **pengine,
+		   struct nvkm_oclass **poclass)
+{
+	struct nvkm_sclass *sclass;
+	struct nvkm_engine *engine;
+	struct nvkm_oclass *oclass;
+	u64 mask;
+
+	sclass = nv_parent(parent)->sclass;
+	while (sclass) {
+		if ((sclass->oclass->handle & 0xffff) == handle) {
+			*pengine = &parent->engine->subdev.object;
+			*poclass = sclass->oclass;
+			return 0;
+		}
+
+		sclass = sclass->sclass;
+	}
+
+	mask = nv_parent(parent)->engine;
+	while (mask) {
+		int i = __ffs64(mask);
+
+		if (nv_iclass(parent, NV_CLIENT_CLASS))
+			engine = nv_engine(nv_client(parent)->device);
+		else
+			engine = nvkm_engine(parent, i);
+
+		if (engine) {
+			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
+nvkm_parent_lclass(struct nvkm_object *parent, u32 *lclass, int size)
+{
+	struct nvkm_sclass *sclass;
+	struct nvkm_engine *engine;
+	struct nvkm_oclass *oclass;
+	int nr = -1, i;
+	u64 mask;
+
+	sclass = nv_parent(parent)->sclass;
+	while (sclass) {
+		if (++nr < size)
+			lclass[nr] = sclass->oclass->handle & 0xffff;
+		sclass = sclass->sclass;
+	}
+
+	mask = nv_parent(parent)->engine;
+	while (i = __ffs64(mask), mask) {
+		engine = nvkm_engine(parent, i);
+		if (engine && (oclass = engine->sclass)) {
+			while (oclass->ofuncs) {
+				if (++nr < size)
+					lclass[nr] = oclass->handle & 0xffff;
+				oclass++;
+			}
+		}
+
+		mask &= ~(1ULL << i);
+	}
+
+	return nr + 1;
+}
+
+int
+nvkm_parent_create_(struct nvkm_object *parent, struct nvkm_object *engine,
+		    struct nvkm_oclass *oclass, u32 pclass,
+		    struct nvkm_oclass *sclass, u64 engcls,
+		    int size, void **pobject)
+{
+	struct nvkm_parent *object;
+	struct nvkm_sclass *nclass;
+	int ret;
+
+	ret = nvkm_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;
+}
+
+void
+nvkm_parent_destroy(struct nvkm_parent *parent)
+{
+	struct nvkm_sclass *sclass;
+
+	while ((sclass = parent->sclass)) {
+		parent->sclass = sclass->sclass;
+		kfree(sclass);
+	}
+
+	nvkm_object_destroy(&parent->object);
+}
+
+
+void
+_nvkm_parent_dtor(struct nvkm_object *object)
+{
+	nvkm_parent_destroy(nv_parent(object));
+}