MCH_CORE_DIMM_CH0
dimm_ch0 = CSR_READ_4(sc, MCH_CORE_DIMM_CH0);
error = COREMCTL_MCH_READ(device_get_parent(dev), MCH_CORE_DIMM_CH0,
dimm_ch0 = CSR_READ_4(sc, MCH_CORE_DIMM_CH0);
dimm_ch_reg = MCH_CORE_DIMM_CH0;