DMA_CHAN_STATUS
intr_status = readl(ioaddr + DMA_CHAN_STATUS(chan));
writel((intr_status & 0x7ffff), ioaddr + DMA_CHAN_STATUS(chan));
reg_space[DMA_CHAN_STATUS(default_addrs, channel) / 4] =
readl(ioaddr + DMA_CHAN_STATUS(dwmac4_addrs, channel));
u32 intr_status = readl(ioaddr + DMA_CHAN_STATUS(dwmac4_addrs, chan));
ioaddr + DMA_CHAN_STATUS(dwmac4_addrs, chan));
u32 intr_status = readl(ioaddr + DMA_CHAN_STATUS(chan));