ENETC_SICBDRPIR
cbdr->pir = hw->reg + ENETC_SICBDRPIR;
regs.pir = hw->reg + ENETC_SICBDRPIR;
ENETC_SICBDRSR, ENETC_SICBDRBAR0, ENETC_SICBDRBAR1, ENETC_SICBDRPIR,