rust: drm: gem: Add GEM object abstraction

The DRM GEM subsystem is the DRM memory management subsystem used by
most modern drivers. Add a Rust abstraction to allow Rust DRM driver
implementations to use it.

Signed-off-by: Asahi Lina <lina@asahilina.net>
Co-developed-by: Danilo Krummrich <dakr@redhat.com>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

1 files changed, 19 insertions, 0 deletions

diff --git a/rust/helpers/drm.c b/rust/helpers/drm.c
new file mode 100644
index 000000000000..0c8f7200d29e
--- /dev/null
+++ b/rust/helpers/drm.c
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <drm/drm_gem.h>
+#include <drm/drm_vma_manager.h>
+
+void rust_helper_drm_gem_object_get(struct drm_gem_object *obj)
+{
+	drm_gem_object_get(obj);
+}
+
+void rust_helper_drm_gem_object_put(struct drm_gem_object *obj)
+{
+	drm_gem_object_put(obj);
+}
+
+__u64 rust_helper_drm_vma_node_offset_addr(struct drm_vma_offset_node *node)
+{
+	return drm_vma_node_offset_addr(node);
+}