mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 17:20:51 +07:00
52 lines
1.3 KiB
C
52 lines
1.3 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/slab.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);
|
||
|
|
}
|