PSC_DMA_CHANNEL_SCSI
wait_psc_dma(PSC_DMA_CHANNEL_SCSI, esc->sc_rset, &resid);
stop_psc_dma(PSC_DMA_CHANNEL_SCSI, esc->sc_rset, &resid,
start_psc_dma(PSC_DMA_CHANNEL_SCSI, &esc->sc_rset,
stop_psc_dma(PSC_DMA_CHANNEL_SCSI, esc->sc_rset, &res,
stop_psc_dma(PSC_DMA_CHANNEL_SCSI, esc->sc_rset, &res,