Index: /trunk/src/VBox/Devices/Storage/PIIX3ATABmDma.h
===================================================================
--- /trunk/src/VBox/Devices/Storage/PIIX3ATABmDma.h	(revision 427)
+++ /trunk/src/VBox/Devices/Storage/PIIX3ATABmDma.h	(revision 428)
@@ -65,4 +65,12 @@
 
 
+/** PIIX3 Bus Master DMA descriptor entry. */
+typedef struct BMDMADesc {
+    /** Address of the DMA source/target buffer. */
+    RTGCPHYS pBuffer;
+    /** Size of the DMA source/target buffer. */
+    uint32_t cbBuffer;
+} BMDMADesc;
+
 /** @} */