DMA_CHAN_TX_BASE_ADDR
writel(lower_32_bits(dma_tx_phy), ioaddr + DMA_CHAN_TX_BASE_ADDR(chan));
reg_space[DMA_CHAN_TX_BASE_ADDR(default_addrs, channel) / 4] =
readl(ioaddr + DMA_CHAN_TX_BASE_ADDR(dwmac4_addrs, channel));
ioaddr + DMA_CHAN_TX_BASE_ADDR(dwmac4_addrs, chan));