drm/nouveau/dma: split user classes out from engine implementations

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 110 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/dma/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/dma/base.c
new file mode 100644
index 000000000000..a48978d39843
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/dma/base.c
@@ -0,0 +1,110 @@
+/*
+ * 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 "priv.h"
+
+#include <core/client.h>
+#include <core/gpuobj.h>
+
+struct hack {
+	struct nvkm_gpuobj object;
+	struct nvkm_gpuobj *parent;
+};
+
+static void
+dtor(struct nvkm_object *object)
+{
+	struct hack *hack = (void *)object;
+	nvkm_gpuobj_del(&hack->parent);
+	nvkm_object_destroy(&hack->object.object);
+}
+
+static struct nvkm_oclass
+hack = {
+	.handle = NV_GPUOBJ_CLASS,
+	.ofuncs = &(struct nvkm_ofuncs) {
+		.dtor = dtor,
+		.init = _nvkm_object_init,
+		.fini = _nvkm_object_fini,
+	},
+};
+
+static int
+nvkm_dmaobj_bind(struct nvkm_dmaobj *dmaobj, struct nvkm_gpuobj *pargpu,
+		 struct nvkm_gpuobj **pgpuobj)
+{
+	const struct nvkm_dma_impl *impl = (void *)
+		nv_oclass(nv_object(dmaobj)->engine);
+	int ret = 0;
+
+	if (&dmaobj->base == &pargpu->object) { /* ctor bind */
+		struct nvkm_object *parent = (void *)pargpu;
+		struct hack *object;
+
+		if (parent->parent->parent == &nvkm_client(parent)->object) {
+			/* delayed, or no, binding */
+			return 0;
+		}
+
+		pargpu = (void *)nv_pclass((void *)pargpu, NV_GPUOBJ_CLASS);
+
+		ret = nvkm_object_create(parent, NULL, &hack, NV_GPUOBJ_CLASS, &object);
+		if (ret == 0) {
+			nvkm_object_ref(NULL, &parent);
+			*pgpuobj = &object->object;
+
+			ret = impl->bind(dmaobj, pargpu, &object->parent);
+			if (ret)
+				return ret;
+
+			object->object.node = object->parent->node;
+			object->object.addr = object->parent->addr;
+			object->object.size = object->parent->size;
+			return 0;
+		}
+
+		return ret;
+	}
+
+	return impl->bind(dmaobj, pargpu, pgpuobj);
+}
+
+int
+_nvkm_dma_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
+		  struct nvkm_oclass *oclass, void *data, u32 size,
+		  struct nvkm_object **pobject)
+{
+	const struct nvkm_dma_impl *impl = (void *)oclass;
+	struct nvkm_dma *dmaeng;
+	int ret;
+
+	ret = nvkm_engine_create(parent, engine, oclass, true, "DMAOBJ",
+				 "dmaobj", &dmaeng);
+	*pobject = nv_object(dmaeng);
+	if (ret)
+		return ret;
+
+	nv_engine(dmaeng)->sclass = impl->sclass;
+	dmaeng->bind = nvkm_dmaobj_bind;
+	return 0;
+}