1 files changed, 43 insertions, 0 deletions
diff --git a/include/drm/ttm/ttm_range_manager.h b/include/drm/ttm/ttm_range_manager.h
new file mode 100644
index 000000000000..983f452ce54b
--- /dev/null
+++ b/include/drm/ttm/ttm_range_manager.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0 OR MIT */
+
+#ifndef _TTM_RANGE_MANAGER_H_
+#define _TTM_RANGE_MANAGER_H_
+
+#include <drm/ttm/ttm_resource.h>
+#include <drm/drm_mm.h>
+
+/**
+ * struct ttm_range_mgr_node
+ *
+ * @base: base clase we extend
+ * @mm_nodes: MM nodes, usually 1
+ *
+ * Extending the ttm_resource object to manage an address space allocation with
+ * one or more drm_mm_nodes.
+ */
+struct ttm_range_mgr_node {
+	struct ttm_resource base;
+	struct drm_mm_node mm_nodes[];
+};
+
+/**
+ * to_ttm_range_mgr_node
+ *
+ * @res: the resource to upcast
+ *
+ * Upcast the ttm_resource object into a ttm_range_mgr_node object.
+ */
+static inline struct ttm_range_mgr_node *
+to_ttm_range_mgr_node(struct ttm_resource *res)
+{
+	return container_of(res->mm_node, struct ttm_range_mgr_node,
+			    mm_nodes[0]);
+}
+
+int ttm_range_man_init(struct ttm_device *bdev,
+		       unsigned type, bool use_tt,
+		       unsigned long p_size);
+int ttm_range_man_fini(struct ttm_device *bdev,
+		       unsigned type);
+
+#endif