EDMA_REG_TXQ_CTRL
EDMA_REG_READ(sc, EDMA_REG_TXQ_CTRL));
reg = EDMA_REG_READ(sc, EDMA_REG_TXQ_CTRL);
EDMA_REG_WRITE(sc, EDMA_REG_TXQ_CTRL, reg);
EDMA_REG_WRITE(sc, EDMA_REG_TXQ_CTRL, reg);
reg = EDMA_REG_READ(sc, EDMA_REG_TXQ_CTRL);
EDMA_REG_WRITE(sc, EDMA_REG_TXQ_CTRL, reg);