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/config.h>
19 #include <linux/pci.h>
20 #include <linux/init.h>
22 #include <asm/mach/pci.h>
23 #include <asm/mach-types.h>
25 void __init nas100d_pci_preinit(void)
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);
33 gpio_line_isr_clear(NAS100D_PCI_INTA_PIN);
34 gpio_line_isr_clear(NAS100D_PCI_INTB_PIN);
35 gpio_line_isr_clear(NAS100D_PCI_INTC_PIN);
36 gpio_line_isr_clear(NAS100D_PCI_INTD_PIN);
37 gpio_line_isr_clear(NAS100D_PCI_INTE_PIN);
42 static int __init nas100d_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
44 static int pci_irq_table[NAS100D_PCI_MAX_DEV][NAS100D_PCI_IRQ_LINES] =
46 { IRQ_NAS100D_PCI_INTA, -1, -1 },
47 { IRQ_NAS100D_PCI_INTB, -1, -1 },
48 { IRQ_NAS100D_PCI_INTC, IRQ_NAS100D_PCI_INTD, IRQ_NAS100D_PCI_INTE },
53 if (slot >= 1 && slot <= NAS100D_PCI_MAX_DEV &&
54 pin >= 1 && pin <= NAS100D_PCI_IRQ_LINES)
55 irq = pci_irq_table[slot-1][pin-1];
60 struct hw_pci __initdata nas100d_pci = {
62 .preinit = nas100d_pci_preinit,
63 .swizzle = pci_std_swizzle,
64 .setup = ixp4xx_setup,
65 .scan = ixp4xx_scan_bus,
66 .map_irq = nas100d_map_irq,
69 int __init nas100d_pci_init(void)
71 if (machine_is_nas100d())
72 pci_common_init(&nas100d_pci);
77 subsys_initcall(nas100d_pci_init);