1/* PCI IRQ routing on the MN103E010 based ASB2305
 2 *
 3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
 4 * Written by David Howells (dhowells@redhat.com)
 5 *
 6 * This program is free software; you can redistribute it and/or
 7 * modify it under the terms of the GNU General Public Licence
 8 * as published by the Free Software Foundation; either version
 9 * 2 of the Licence, or (at your option) any later version.
10 *
11 * This is simple: All PCI interrupts route through the CPU's XIRQ1 pin [IRQ 35]
12 */
13#include <linux/types.h>
14#include <linux/kernel.h>
15#include <linux/pci.h>
16#include <linux/init.h>
17#include <linux/interrupt.h>
18#include <linux/irq.h>
19#include <asm/io.h>
20#include <asm/smp.h>
21#include "pci-asb2305.h"
22
23void __init pcibios_irq_init(void)
24{
25}
26
27void __init pcibios_fixup_irqs(void)
28{
29	struct pci_dev *dev = NULL;
30	u8 line, pin;
31
32	for_each_pci_dev(dev) {
33		pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
34		if (pin) {
35			dev->irq = XIRQ1;
36			pci_write_config_byte(dev, PCI_INTERRUPT_LINE,
37					      dev->irq);
38		}
39		pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &line);
40	}
41}
42
43void pcibios_enable_irq(struct pci_dev *dev)
44{
45	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
46}