DMAC_TXADRHI
dmac_write(host, DMAC_TXADRHI, 0);
dmac_write(host, DMAC_TXADRHI, 0);
dmac_write(host, DMAC_TXADRHI, 0);
dmac_write(host, DMAC_TXADRHI, transferred >> 16);
return dmac_read(host, DMAC_TXADRHI) << 16 |