IDMA64C_CTLH_BLOCK_TS
u32 ctlhi = IDMA64C_CTLH_BLOCK_TS(hw->len);
return bytes - IDMA64C_CTLH_BLOCK_TS(ctlhi);
channel_writel(idma64c, CTL_HI, IDMA64C_CTLH_BLOCK_TS(~0UL));