SBIC_CTL_BURST_DMA
sc->sc_dmamode = SBIC_CTL_BURST_DMA;
SBIC_CTL_BURST_DMA : SBIC_CTL_DMA;
(sc->sc_dmamode == SBIC_CTL_BURST_DMA) ? "BURST DMA" : "PIO",
sc->sc_sbic.sc_dmamode = SBIC_CTL_BURST_DMA;