2 * arch/arm/mach-ixp4xx/ixdp425-pci.c
4 * IXDP425 board-level PCI initialization
6 * Copyright (C) 2002 Intel Corporation.
7 * Copyright (C) 2003-2004 MontaVista Software, Inc.
9 * Maintainer: Deepak Saxena <dsaxena@plexity.net>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
17 #include <linux/kernel.h>
18 #include <linux/config.h>
19 #include <linux/pci.h>
20 #include <linux/init.h>
21 #include <linux/delay.h>
23 #include <asm/mach/pci.h>
25 #include <asm/hardware.h>
26 #include <asm/mach-types.h>
28 void __init ixdp425_pci_preinit(void)
30 set_irq_type(IRQ_IXDP425_PCI_INTA, IRQT_LOW);
31 set_irq_type(IRQ_IXDP425_PCI_INTB, IRQT_LOW);
32 set_irq_type(IRQ_IXDP425_PCI_INTC, IRQT_LOW);
33 set_irq_type(IRQ_IXDP425_PCI_INTD, IRQT_LOW);
35 gpio_line_isr_clear(IXDP425_PCI_INTA_PIN);
36 gpio_line_isr_clear(IXDP425_PCI_INTB_PIN);
37 gpio_line_isr_clear(IXDP425_PCI_INTC_PIN);
38 gpio_line_isr_clear(IXDP425_PCI_INTD_PIN);
43 static int __init ixdp425_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
45 static int pci_irq_table[IXDP425_PCI_IRQ_LINES] = {
54 if (slot >= 1 && slot <= IXDP425_PCI_MAX_DEV &&
55 pin >= 1 && pin <= IXDP425_PCI_IRQ_LINES) {
56 irq = pci_irq_table[(slot + pin - 2) % 4];
62 struct hw_pci ixdp425_pci __initdata = {
64 .preinit = ixdp425_pci_preinit,
65 .swizzle = pci_std_swizzle,
66 .setup = ixp4xx_setup,
67 .scan = ixp4xx_scan_bus,
68 .map_irq = ixdp425_map_irq,
71 int __init ixdp425_pci_init(void)
73 if (machine_is_ixdp425() || machine_is_ixcdp1100() ||
74 machine_is_avila() || machine_is_ixdp465())
75 pci_common_init(&ixdp425_pci);
79 subsys_initcall(ixdp425_pci_init);