--- src/sys/bus/pci/pcivar.h	2007/11/23 14:41:56	1.12
+++ src/sys/bus/pci/pcivar.h	2007/11/25 04:08:42	1.13
@@ -52,7 +52,7 @@ typedef u_int64_t pci_addr_t;	/* u_int64
 typedef u_int32_t pci_addr_t;	/* u_int64_t for system with 64bit addresses */
 #endif
 
-/* config values for PCI power management */
+/* config values for PCI power management capability */
 struct pcicfg_pmgt {
     u_int16_t	pp_cap;		/* PCI power management capabilities */
     u_int8_t	pp_status;	/* config space address of PCI power status reg */
@@ -60,6 +60,13 @@ struct pcicfg_pmgt {
     u_int8_t	pp_data;	/* config space address of PCI power data reg */
 };
 
+/* config values for PCI Express capability */
+struct pcicfg_expr {
+    uint8_t	expr_ptr;	/* capability ptr */
+    uint16_t	expr_cap;	/* capabilities */
+    uint32_t	expr_slotcap;	/* slot capabilities */
+};
+
 /* config header information common to all header types */
 
 typedef struct pcicfg {
@@ -98,7 +105,8 @@ typedef struct pcicfg {
     u_int8_t	secondarybus;	/* bus on secondary side of bridge, if any */
     u_int8_t	subordinatebus;	/* topmost bus number behind bridge, if any */
 
-    struct pcicfg_pmgt pmgt;	/* power management */
+    struct pcicfg_pmgt pmgt;	/* power management capability */
+    struct pcicfg_expr expr;	/* PCI Express capability */
 } pcicfgregs;
 
 /* additional type 1 device config header information (PCI to PCI bridge) */