TG3_CPMU_CTRL
cpmu_val = tr32(TG3_CPMU_CTRL);
tw32(TG3_CPMU_CTRL, cpmu_val &
tw32(TG3_CPMU_CTRL, cpmu_val);
cpmuctrl = tr32(TG3_CPMU_CTRL);
tw32(TG3_CPMU_CTRL,
tw32(TG3_CPMU_CTRL, cpmuctrl);
val = tr32(TG3_CPMU_CTRL);
tw32(TG3_CPMU_CTRL, val);