PCI_EXP_SLTCAP_PSN
data &= ~PCI_EXP_SLTCAP_PSN;
bridge->pcie_conf.slotcap = cpu_to_le32(FIELD_PREP(PCI_EXP_SLTCAP_PSN,
FIELD_PREP(PCI_EXP_SLTCAP_PSN, port->port+1));
rcar_rmw32(pcie, REXPCAP(PCI_EXP_SLTCAP), PCI_EXP_SLTCAP_PSN, 0);
rcar_rmw32(pcie, REXPCAP(PCI_EXP_SLTCAP), PCI_EXP_SLTCAP_PSN, 0);
#define PSN(ctrl) (((ctrl)->slot_cap & PCI_EXP_SLTCAP_PSN) >> 19)
FIELD_GET(PCI_EXP_SLTCAP_PSN, slot_cap),