CPU_IRQ_BASE       23 include/asm-parisc/irq.h #define TIMER_IRQ	(CPU_IRQ_BASE + 0)
CPU_IRQ_BASE       24 include/asm-parisc/irq.h #define	IPI_IRQ		(CPU_IRQ_BASE + 1)
CPU_IRQ_BASE       25 include/asm-parisc/irq.h #define CPU_IRQ_MAX	(CPU_IRQ_BASE + (BITS_PER_LONG - 1))