Index: head/sys/powerpc/powernv/opal.h
===================================================================
--- head/sys/powerpc/powernv/opal.h
+++ head/sys/powerpc/powernv/opal.h
@@ -79,6 +79,20 @@
 #define	OPAL_UNMAP_PE			0
 #define OPAL_MAP_PE			1
 
+#define	OPAL_PCI_BUS_ANY		0
+#define	OPAL_PCI_BUS_3BITS		2
+#define	OPAL_PCI_BUS_4BITS		3
+#define	OPAL_PCI_BUS_5BITS		4
+#define	OPAL_PCI_BUS_6BITS		5
+#define	OPAL_PCI_BUS_7BITS		6
+#define	OPAL_PCI_BUS_ALL		7 /* Match bus number exactly */
+
+#define	OPAL_IGNORE_RID_DEVICE_NUMBER	0
+#define	OPAL_COMPARE_RID_DEVICE_NUMBER	1
+
+#define	OPAL_IGNORE_RID_FUNC_NUMBER	0
+#define	OPAL_COMPARE_RID_FUNC_NUMBER	1
+
 #define	OPAL_SUCCESS			0
 #define	OPAL_PARAMETER			-1
 #define	OPAL_BUSY			-2
Index: head/sys/powerpc/powernv/opal_pci.c
===================================================================
--- head/sys/powerpc/powernv/opal_pci.c
+++ head/sys/powerpc/powernv/opal_pci.c
@@ -254,8 +254,8 @@
 	 * such time as we start wanting to do things like bhyve.
 	 */
 	err = opal_call(OPAL_PCI_SET_PE, sc->phb_id, OPAL_PCI_DEFAULT_PE,
-	    0, 0, 0, 0, /* All devices */
-	    OPAL_MAP_PE);
+	    0, OPAL_PCI_BUS_ANY, OPAL_IGNORE_RID_DEVICE_NUMBER,
+	    OPAL_IGNORE_RID_FUNC_NUMBER, OPAL_MAP_PE);
 	if (err != 0) {
 		device_printf(dev, "PE mapping failed: %d\n", err);
 		return (ENXIO);