CDAL
sca_outw(desc_offset(port, 0, transmit), dmac + CDAL, card);
u32 cda = sca_inw(dmac + CDAL, card);
u32 cda = sca_inw(dmac + CDAL, card);
sca_inw(get_dmac_rx(port) + CDAL, card),
sca_inw(get_dmac_tx(port) + CDAL, card),
sca_outl(desc_offset(port, 0, 0), dmac_rx + CDAL, card);
sca_outl(desc_offset(port, 0, 1), dmac_tx + CDAL, card);
u32 cda = sca_inl(dmac + CDAL, card);
sca_inl(get_dmac_rx(port) + CDAL, card),
sca_inl(get_dmac_tx(port) + CDAL, card),