pci-irq.c

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/* PCI IRQ routing on the MN103E010 based ASB2305
 *
 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells ([email protected])
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public Licence
 * as published by the Free Software Foundation; either version
 * 2 of the Licence, or (at your option) any later version.
 *
 * This is simple: All PCI interrupts route through the CPU's XIRQ1 pin [IRQ 35]
 */
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <asm/io.h>
#include <asm/smp.h>
#include "pci-asb2305.h"

void __init pcibios_irq_init(void)
{
}

void __init pcibios_fixup_irqs(void)
{
    struct pci_dev *dev = NULL;
    u8 line, pin;

    while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
        pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
        if (pin) {
            dev->irq = XIRQ1;
            pci_write_config_byte(dev, PCI_INTERRUPT_LINE,
                          dev->irq);
        }
        pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &line);
    }
}

void __init pcibios_penalize_isa_irq(int irq)
{
}

void pcibios_enable_irq(struct pci_dev *dev)
{
    pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
}