regSDMA_POWER_CNTL
def = data = RREG32_SDMA(i, regSDMA_POWER_CNTL);
WREG32_SDMA(i, regSDMA_POWER_CNTL, data);
def = data = RREG32_SDMA(i, regSDMA_POWER_CNTL);
WREG32_SDMA(i, regSDMA_POWER_CNTL, data);
data = RREG32(SOC15_REG_OFFSET(SDMA0, GET_INST(SDMA0, 0), regSDMA_POWER_CNTL));