ixp2000_reg_write(IXDP2X01_INT_SIM_REG, 0);
ixp2000_reg_wrb(IXDP2X01_INT_SIM_REG, 0);
void __init ixdp2x01_init_irq(void){	int irq = 0;	/* initialize chip specific interrupts */	ixp2000_init_irq();	if (machine_is_ixdp2401())		valid_irq_mask = IXDP2401_VALID_IRQ_MASK;	else		valid_irq_mask = IXDP2801_VALID_IRQ_MASK;	/* Mask all interrupts from CPLD, disable simulation */	ixp2000_reg_write(IXDP2X01_INT_MASK_SET_REG, 0xffffffff);	ixp2000_reg_write(IXDP2X01_INT_SIM_REG, 0);	for (irq = NR_IXP2000_IRQS; irq < NR_IXDP2X01_IRQS; irq++) {		if (irq & valid_irq_mask) {			set_irq_chip(irq, &ixdp2x01_irq_chip);			set_irq_handler(irq, do_level_IRQ);			set_irq_flags(irq, IRQF_VALID);		} else {			set_irq_flags(irq, 0);		}	}	/* Hook into PCI interrupts */	set_irq_chained_handler(IRQ_IXP2000_PCIB, &ixdp2x01_irq_handler);}