+/* Enhanced Allocation Registers */
+#define PCI_EA_NUM_ENT 2 /* Number of Capability Entries */
+#define PCI_EA_NUM_ENT_MASK 0x3f /* Num Entries Mask */
+#define PCI_EA_FIRST_ENT 4 /* First EA Entry in List */
+#define PCI_EA_ES 0x00000007 /* Entry Size */
+#define PCI_EA_BEI 0x000000f0 /* BAR Equivalent Indicator */
+/* Base, MaxOffset registers */
+/* bit 0 is reserved */
+#define PCI_EA_IS_64 0x00000002 /* 64-bit field flag */
+#define PCI_EA_FIELD_MASK 0xfffffffc /* For Base & Max Offset */
+
+/* PCI Express capabilities */
+#define PCI_EXP_DEVCAP 4 /* Device capabilities */
+#define PCI_EXP_DEVCAP_FLR 0x10000000 /* Function Level Reset */
+#define PCI_EXP_DEVCTL 8 /* Device Control */
+#define PCI_EXP_DEVCTL_BCR_FLR 0x8000 /* Bridge Configuration Retry / FLR */
+