XGMAC_DMA_CH_CONTROL
u32 value = readl(ioaddr + XGMAC_DMA_CH_CONTROL(chan));
writel(value, ioaddr + XGMAC_DMA_CH_CONTROL(chan));
value = readl(ioaddr + XGMAC_DMA_CH_CONTROL(chan));
writel(value, ioaddr + XGMAC_DMA_CH_CONTROL(chan));