DCR_UIC_SR
mtdcr(DCR_UIC1_BASE + DCR_UIC_SR, 0x80000000);
mtdcr(DCR_UIC3_BASE + DCR_UIC_SR, 0x000ff000);
(unsigned int)mfdcr((base) + DCR_UIC_SR), \
mtdcr(DCR_UIC0_BASE + DCR_UIC_SR, v);
mtdcr(DCR_UIC1_BASE + DCR_UIC_SR, v);
mtdcr(DCR_UIC2_BASE + DCR_UIC_SR, v);
mtdcr(DCR_UIC3_BASE + DCR_UIC_SR, v);