a43ae58c84
pcibios_penalize_isa_irq() is only implemented by x86 now, and legacy ISA is not used by some architectures. Make pcibios_penalize_isa_irq() a __weak function to simplify the code. This removes the need for new platforms to add stub implementations of pcibios_penalize_isa_irq(). [bhelgaas: changelog, comments] Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/* 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);
|
|
}
|