/* * 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/pci.h> #include <linux/init.h> #include <linux/irq.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); 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);