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 mv64340 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 mv64340_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			(PCI_FUNC(devices->devfn) == 0)) {
42			/* LSI 53C10101R SCSI (A) */
43			devices->irq = 2;
44		} else if ((current_bus->number == 0) &&
45			(PCI_SLOT(devices->devfn) == 1) &&
46			(PCI_FUNC(devices->devfn) == 1)) {
47			/* LSI 53C10101R SCSI (B) */
48			devices->irq = 2;
49		} else if ((current_bus->number == 1) &&
50			(PCI_SLOT(devices->devfn) == 1)) {
51			/* Intel 21555 bridge */
52			devices->irq = 12;
53		} else if ((current_bus->number == 1) &&
54			(PCI_SLOT(devices->devfn) == 2)) {
55			/* PMC Slot */
56			devices->irq = 4;
57		} else {
58			/* We don't have assign interrupts for other devices. */
59			devices->irq = 0xff;
60		}
61
62		/* Assign an interrupt number for the device */
63		bus->ops->write_byte(devices, PCI_INTERRUPT_LINE, devices->irq);
64
65		/* enable master for everything but the MV-64340 */
66		if (((current_bus->number != 0) && (current_bus->number != 1))
67				|| (PCI_SLOT(devices->devfn) != 0)) {
68			bus->ops->read_word(devices, PCI_COMMAND, &cmd);
69			cmd |= PCI_COMMAND_MASTER;
70			bus->ops->write_word(devices, PCI_COMMAND, cmd);
71		}
72	}
73}
74