MGB_DMAC_CMD
CSR_WRITE_REG(sc, MGB_DMAC_CMD,
error = mgb_wait_for_bits(sc, MGB_DMAC_CMD, 0,
CSR_WRITE_REG(sc, MGB_DMAC_CMD,
CSR_WRITE_REG(sc, MGB_DMAC_CMD,
error = mgb_wait_for_bits(sc, MGB_DMAC_CMD,
CSR_WRITE_REG(sc, MGB_DMAC_CMD, MGB_DMAC_RESET);
return (mgb_wait_for_bits(sc, MGB_DMAC_CMD, 0, MGB_DMAC_RESET));
CSR_READ_REG(sc, MGB_DMAC_CMD) & MGB_DMAC_CMD_START(_s, _ch), \
CSR_READ_REG(sc, MGB_DMAC_CMD) & MGB_DMAC_CMD_STOP(_s, _ch)))