IXP4XX_ICMR2
__raw_writel(val, ixi->irqbase + IXP4XX_ICMR2);
__raw_writel(0x0, ixi->irqbase + IXP4XX_ICMR2);
val = __raw_readl(ixi->irqbase + IXP4XX_ICMR2);
__raw_writel(val, ixi->irqbase + IXP4XX_ICMR2);
val = __raw_readl(ixi->irqbase + IXP4XX_ICMR2);