SA1111_INTSTATCLR0
stat0 = readl_relaxed(mapbase + SA1111_INTSTATCLR0);
writel_relaxed(stat0, mapbase + SA1111_INTSTATCLR0);
if (readl_relaxed(mapbase + SA1111_INTSTATCLR0) & mask)
writel_relaxed(~0, irqbase + SA1111_INTSTATCLR0);