diff options
Diffstat (limited to 'kernel/arch/mn10300/unit-asb2305/pci-irq.c')
| -rw-r--r-- | kernel/arch/mn10300/unit-asb2305/pci-irq.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/kernel/arch/mn10300/unit-asb2305/pci-irq.c b/kernel/arch/mn10300/unit-asb2305/pci-irq.c new file mode 100644 index 000000000..fcb28ceb8 --- /dev/null +++ b/kernel/arch/mn10300/unit-asb2305/pci-irq.c @@ -0,0 +1,46 @@ +/* PCI IRQ routing on the MN103E010 based ASB2305 + * + * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * 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; + + for_each_pci_dev(dev) { + 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 pcibios_enable_irq(struct pci_dev *dev) +{ + pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq); +} |