PCL_RCV_INTX
writel(PCL_RCV_INTX_ALL_ENABLE, pcie->base + PCL_RCV_INTX);
val = readl(pcie->base + PCL_RCV_INTX);
writel(val, pcie->base + PCL_RCV_INTX);
val = readl(pcie->base + PCL_RCV_INTX);
writel(val, pcie->base + PCL_RCV_INTX);
val = readl(pcie->base + PCL_RCV_INTX);