Index: uspace/drv/block/pci-ide/pci-ide_hw.h
===================================================================
--- uspace/drv/block/pci-ide/pci-ide_hw.h	(revision 443695ef37d4e47d223158ab3b07f84e2d5df943)
+++ uspace/drv/block/pci-ide/pci-ide_hw.h	(revision a38d50441a00157a8528ae5eeedffc144c4df62e)
@@ -98,4 +98,18 @@
 };
 
+enum {
+	pci_ide_prd_eot = 0x8000
+};
+
+/** PIIX physical region descriptor */
+typedef struct {
+	/** Physical base address */
+	uint32_t pba;
+	/** Byte count */
+	uint16_t bcnt;
+	/** EOT / reserved */
+	uint16_t eot_res;
+} pci_ide_prd_t;
+
 #endif