DMA_CHAN_TX_BASE_ADDR_HI
reg_space[DMA_CHAN_TX_BASE_ADDR_HI(default_addrs, channel) / 4] =
readl(ioaddr + DMA_CHAN_TX_BASE_ADDR_HI(dwmac4_addrs, channel));
ioaddr + DMA_CHAN_TX_BASE_ADDR_HI(dwmac4_addrs, chan));