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b920de1b DH |
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> | |
b920de1b DH |
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 | ||
23 | void __init pcibios_irq_init(void) | |
24 | { | |
25 | } | |
26 | ||
27 | void __init pcibios_fixup_irqs(void) | |
28 | { | |
29 | struct pci_dev *dev = NULL; | |
30 | u8 line, pin; | |
31 | ||
3b639183 | 32 | for_each_pci_dev(dev) { |
b920de1b DH |
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 | ||
b920de1b DH |
43 | void pcibios_enable_irq(struct pci_dev *dev) |
44 | { | |
45 | pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq); | |
46 | } |