+#define PCI_DCR 0x54 /* PCIe Device Control Register */
+#define PCI_DSR 0x56 /* PCIe Device Status Register */
+#define PCI_LSR 0x5e /* PCIe Link Status Register */
+#define PCI_LTSSM 0x404 /* PCIe Link Training, Status State Machine */
+#define PCI_LTSSM_L0 0x16 /* L0 state */
+