/* internal IRQs operations: only mask/unmask on PERF irq mask register.  */
static void bcm63xx_internal_irq_mask(unsigned int irq)
/* internal IRQs operations: only mask/unmask on PERF irq mask register.  */
static void bcm63xx_internal_irq_mask(unsigned int irq)
{
	u32 mask;
	irq -= IRQ_INTERNAL_BASE;
	mask = bcm_perf_readl(PERF_IRQMASK_REG);
	mask &= ~(1 << irq);
	bcm_perf_writel(mask, PERF_IRQMASK_REG);
}