1/*
2 * Copyright 2002 Momentum Computer Inc.
3 * Author: Matthew Dharm <mdharm@momenco.com>
4 *
5 * Based on work for the Linux port to the Ocelot board, which is
6 * Copyright 2001 MontaVista Software Inc.
7 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
8 *
9 * arch/mips/momentum/ocelot_g/pci.c
10 *     Board-specific PCI routines for gt64240 controller.
11 *
12 * This program is free software; you can redistribute  it and/or modify it
13 * under  the terms of  the GNU General  Public License as published by the
14 * Free Software Foundation;  either version 2 of the  License, or (at your
15 * option) any later version.
16 */
17#include <linux/types.h>
18#include <linux/pci.h>
19#include <linux/kernel.h>
20#include <linux/version.h>
21#include <linux/init.h>
22#include <asm/pci.h>
23
24
25void __init gt64240_board_pcibios_fixup_bus(struct pci_bus *bus)
26{
27	struct pci_bus *current_bus = bus;
28	struct pci_dev *devices;
29	struct list_head *devices_link;
30	u16 cmd;
31
32	/* loop over all known devices on this bus */
33	list_for_each(devices_link, &(current_bus->devices)) {
34
35		devices = pci_dev_b(devices_link);
36		if (devices == NULL)
37			continue;
38
39		if ((current_bus->number == 0) &&
40				PCI_SLOT(devices->devfn) == 1) {
41			/* Intel 82543 Gigabit MAC */
42			devices->irq = 2;       /* irq_nr is 2 for INT0 */
43		} else if ((current_bus->number == 0) &&
44				PCI_SLOT(devices->devfn) == 2) {
45			/* Intel 82543 Gigabit MAC */
46			devices->irq = 3;       /* irq_nr is 3 for INT1 */
47		} else if ((current_bus->number == 1) &&
48				PCI_SLOT(devices->devfn) == 3) {
49			/* Intel 21555 bridge */
50			devices->irq = 5;       /* irq_nr is 8 for INT6 */
51		} else if ((current_bus->number == 1) &&
52				PCI_SLOT(devices->devfn) == 4) {
53			/* PMC Slot */
54			devices->irq = 9;       /* irq_nr is 9 for INT7 */
55		} else {
56			/* We don't have assign interrupts for other devices. */
57			devices->irq = 0xff;
58		}
59
60		/* Assign an interrupt number for the device */
61		bus->ops->write_byte(devices, PCI_INTERRUPT_LINE, devices->irq);
62
63		/* enable master for everything but the GT-64240 */
64		if (((current_bus->number != 0) && (current_bus->number != 1))
65				|| (PCI_SLOT(devices->devfn) != 0)) {
66			bus->ops->read_word(devices, PCI_COMMAND, &cmd);
67			cmd |= PCI_COMMAND_MASTER;
68			bus->ops->write_word(devices, PCI_COMMAND, cmd);
69		}
70	}
71}
72