usb_dmac_chan_write
usb_dmac_chan_write(chan, USB_DMASAR, src_addr & 0xffffffff);
usb_dmac_chan_write(chan, USB_DMADAR, dst_addr & 0xffffffff);
usb_dmac_chan_write(chan, USB_DMATCR,
usb_dmac_chan_write(chan, USB_DMATEND, usb_dmac_calc_tend(sg->size));
usb_dmac_chan_write(chan, USB_DMACHCR, USB_DMAC_CHCR_TS |
usb_dmac_chan_write(chan, USB_DMACHCR, chcr);
usb_dmac_chan_write(chan, USB_DMACHCR, chcr & ~mask);