+extern void radeonGetLock(radeonContextPtr rmesa, GLuint flags);
+
+void radeon_lock_hardware(radeonContextPtr rmesa
+#ifndef NDEBUG
+ ,const char* function
+ ,const char* file
+ ,const int line
+#endif
+ );
+void radeon_unlock_hardware(radeonContextPtr rmesa);
+
+/* Lock the hardware and validate our state.
+ */
+#ifdef NDEBUG
+#define LOCK_HARDWARE( rmesa ) radeon_lock_hardware(rmesa)
+#else
+#define LOCK_HARDWARE( rmesa ) radeon_lock_hardware(rmesa, __FUNCTION__, __FILE__, __LINE__)
+#endif
+#define UNLOCK_HARDWARE( rmesa ) radeon_unlock_hardware(rmesa)
+
+#endif