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diff --git a/bltsville/bltsville/include/bvinternal.h b/bltsville/bltsville/include/bvinternal.h
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+++ b/bltsville/bltsville/include/bvinternal.h
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+/*
+ * bvinternal.h
+ *
+ * Copyright (C) 2011 Texas Instruments, Inc.
+ *
+ * This file is part of BLTsville, an open application programming interface
+ * (API) for accessing 2-D software or hardware implementations.
+ *
+ * This work is licensed under the Creative Commons Attribution-NoDerivs 3.0
+ * Unported License. To view a copy of this license, visit
+ * http://creativecommons.org/licenses/by-nd/3.0/ or send a letter to
+ * Creative Commons, 444 Castro Street, Suite 900, Mountain View, California,
+ * 94041, USA.
+ */
+
+/*
+ * This file contains definitions used by implementations of BLTsville
+ * 2-D libraries.  It should not be used by clients.
+ */
+
+#ifndef BVINTERNAL_H
+#define BVINTENRAL_H
+
+/*
+ * bvbuffmap - The bvbuffmap structure is used to track resources
+ * associated with a buffer, such as a h/w MMU entry.  The implementations
+ * add bvbuffmap objects when they allocate the resources.  Then when a
+ * buffer is accessed, the implementations can regain access to the
+ * associated resources.  The implementations allocate and populate this
+ * structure when a bv_map() call is made.  It is used in subsequent
+ * bv_blt() and bv_unmap() calls.  The latter frees the associated resource
+ * and the structure (if applicable).  Note that a given resource might be
+ * used by more than one implementation.
+ */
+struct bvbuffmap {
+	unsigned int structsize; /* used to ID structure ver */
+
+	/* function to unmap this resource */
+	BVFN_UNMAP bv_unmap;
+
+	unsigned long handle;	 /* resource-specific info */
+
+	/* pointer to next resource mapping structure */
+	struct bvbuffmap *nextmap;
+};
+
+#endif /* BVINTERNAL_H */