2 * arch/arm/mach-ixp4xx/nas100d-pci.c
4 * NAS 100d board-level PCI initialization
6 * based on ixdp425-pci.c:
7 * Copyright (C) 2002 Intel Corporation.
8 * Copyright (C) 2003-2004 MontaVista Software, Inc.
10 * Maintainer: http://www.nslu2-linux.org/
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.
18 #include <linux/pci.h>
19 #include <linux/init.h>
21 #include <asm/mach/pci.h>
22 #include <asm/mach-types.h>
24 void __init nas100d_pci_preinit(void)
26 set_irq_type(IRQ_NAS100D_PCI_INTA, IRQT_LOW);
27 set_irq_type(IRQ_NAS100D_PCI_INTB, IRQT_LOW);
28 set_irq_type(IRQ_NAS100D_PCI_INTC, IRQT_LOW);
29 set_irq_type(IRQ_NAS100D_PCI_INTD, IRQT_LOW);
30 set_irq_type(IRQ_NAS100D_PCI_INTE, IRQT_LOW);
35 static int __init nas100d_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
37 static int pci_irq_table[NAS100D_PCI_MAX_DEV][NAS100D_PCI_IRQ_LINES] =
39 { IRQ_NAS100D_PCI_INTA, -1, -1 },
40 { IRQ_NAS100D_PCI_INTB, -1, -1 },
41 { IRQ_NAS100D_PCI_INTC, IRQ_NAS100D_PCI_INTD, IRQ_NAS100D_PCI_INTE },
46 if (slot >= 1 && slot <= NAS100D_PCI_MAX_DEV &&
47 pin >= 1 && pin <= NAS100D_PCI_IRQ_LINES)
48 irq = pci_irq_table[slot-1][pin-1];
53 struct hw_pci __initdata nas100d_pci = {
55 .preinit = nas100d_pci_preinit,
56 .swizzle = pci_std_swizzle,
57 .setup = ixp4xx_setup,
58 .scan = ixp4xx_scan_bus,
59 .map_irq = nas100d_map_irq,
62 int __init nas100d_pci_init(void)
64 if (machine_is_nas100d())
65 pci_common_init(&nas100d_pci);
70 subsys_initcall(nas100d_pci_init);