1/* 2 * arch/arm/mach-ixp4xx/nas100d-pci.c 3 * 4 * NAS 100d board-level PCI initialization 5 * 6 * based on ixdp425-pci.c: 7 * Copyright (C) 2002 Intel Corporation. 8 * Copyright (C) 2003-2004 MontaVista Software, Inc. 9 * 10 * Maintainer: http://www.nslu2-linux.org/ 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License version 2 as 14 * published by the Free Software Foundation. 15 * 16 */ 17 18#include <linux/pci.h> 19#include <linux/init.h> 20#include <linux/irq.h> 21 22#include <asm/mach/pci.h> 23#include <asm/mach-types.h> 24 25void __init nas100d_pci_preinit(void) 26{ 27 set_irq_type(IRQ_NAS100D_PCI_INTA, IRQT_LOW); 28 set_irq_type(IRQ_NAS100D_PCI_INTB, IRQT_LOW); 29 set_irq_type(IRQ_NAS100D_PCI_INTC, IRQT_LOW); 30 set_irq_type(IRQ_NAS100D_PCI_INTD, IRQT_LOW); 31 set_irq_type(IRQ_NAS100D_PCI_INTE, IRQT_LOW); 32 33 ixp4xx_pci_preinit(); 34} 35 36static int __init nas100d_map_irq(struct pci_dev *dev, u8 slot, u8 pin) 37{ 38 static int pci_irq_table[NAS100D_PCI_MAX_DEV][NAS100D_PCI_IRQ_LINES] = 39 { 40 { IRQ_NAS100D_PCI_INTA, -1, -1 }, 41 { IRQ_NAS100D_PCI_INTB, -1, -1 }, 42 { IRQ_NAS100D_PCI_INTC, IRQ_NAS100D_PCI_INTD, IRQ_NAS100D_PCI_INTE }, 43 }; 44 45 int irq = -1; 46 47 if (slot >= 1 && slot <= NAS100D_PCI_MAX_DEV && 48 pin >= 1 && pin <= NAS100D_PCI_IRQ_LINES) 49 irq = pci_irq_table[slot-1][pin-1]; 50 51 return irq; 52} 53 54struct hw_pci __initdata nas100d_pci = { 55 .nr_controllers = 1, 56 .preinit = nas100d_pci_preinit, 57 .swizzle = pci_std_swizzle, 58 .setup = ixp4xx_setup, 59 .scan = ixp4xx_scan_bus, 60 .map_irq = nas100d_map_irq, 61}; 62 63int __init nas100d_pci_init(void) 64{ 65 if (machine_is_nas100d()) 66 pci_common_init(&nas100d_pci); 67 68 return 0; 69} 70 71subsys_initcall(nas100d_pci_init); 72