/* * arch/arm/mach-ixp4xx/nslu2-pci.c * * NSLU2 board-level PCI initialization * * based on ixdp425-pci.c: *	Copyright (C) 2002 Intel Corporation. *	Copyright (C) 2003-2004 MontaVista Software, Inc. * * Maintainer: http://www.nslu2-linux.org/ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * */#include <linux/config.h>#include <linux/pci.h>#include <linux/init.h>#include <asm/mach/pci.h>#include <asm/mach-types.h>void __init nslu2_pci_preinit(void){	set_irq_type(IRQ_NSLU2_PCI_INTA, IRQT_LOW);	set_irq_type(IRQ_NSLU2_PCI_INTB, IRQT_LOW);	set_irq_type(IRQ_NSLU2_PCI_INTC, IRQT_LOW);	gpio_line_isr_clear(NSLU2_PCI_INTA_PIN);	gpio_line_isr_clear(NSLU2_PCI_INTB_PIN);	gpio_line_isr_clear(NSLU2_PCI_INTC_PIN);	/* INTD is not configured as GPIO is used	 * for the power input button.	 */	ixp4xx_pci_preinit();}static int __init nslu2_map_irq(struct pci_dev *dev, u8 slot, u8 pin){	static int pci_irq_table[NSLU2_PCI_IRQ_LINES] = {		IRQ_NSLU2_PCI_INTA,		IRQ_NSLU2_PCI_INTB,		IRQ_NSLU2_PCI_INTC,	};	int irq = -1;	if (slot >= 1 && slot <= NSLU2_PCI_MAX_DEV &&		pin >= 1 && pin <= NSLU2_PCI_IRQ_LINES) {			irq = pci_irq_table[(slot + pin - 2) % NSLU2_PCI_IRQ_LINES];	}	return irq;}struct hw_pci __initdata nslu2_pci = {	.nr_controllers = 1,	.preinit	= nslu2_pci_preinit,	.swizzle	= pci_std_swizzle,	.setup		= ixp4xx_setup,	.scan		= ixp4xx_scan_bus,	.map_irq	= nslu2_map_irq,};int __init nslu2_pci_init(void) /* monkey see, monkey do */{	if (machine_is_nslu2())		pci_common_init(&nslu2_pci);	return 0;}subsys_initcall(nslu2_pci_init);