1/*
2 * DSM-G600 board-level PCI initialization
3 *
4 * Copyright (C) 2006 Tower Technologies
5 * Author: Alessandro Zummo <a.zummo@towertech.it>
6 *
7 * based on ixdp425-pci.c:
8 *	Copyright (C) 2002 Intel Corporation.
9 *	Copyright (C) 2003-2004 MontaVista Software, Inc.
10 *
11 * Maintainer: http://www.nslu2-linux.org/
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2 as
15 * published by the Free Software Foundation.
16 *
17 */
18
19#include <linux/pci.h>
20#include <linux/init.h>
21#include <linux/irq.h>
22
23#include <asm/mach/pci.h>
24#include <asm/mach-types.h>
25
26void __init dsmg600_pci_preinit(void)
27{
28	set_irq_type(IRQ_DSMG600_PCI_INTA, IRQT_LOW);
29	set_irq_type(IRQ_DSMG600_PCI_INTB, IRQT_LOW);
30	set_irq_type(IRQ_DSMG600_PCI_INTC, IRQT_LOW);
31	set_irq_type(IRQ_DSMG600_PCI_INTD, IRQT_LOW);
32	set_irq_type(IRQ_DSMG600_PCI_INTE, IRQT_LOW);
33	set_irq_type(IRQ_DSMG600_PCI_INTF, IRQT_LOW);
34
35	ixp4xx_pci_preinit();
36}
37
38static int __init dsmg600_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
39{
40	static int pci_irq_table[DSMG600_PCI_MAX_DEV][DSMG600_PCI_IRQ_LINES] =
41	{
42		{ IRQ_DSMG600_PCI_INTE, -1, -1 },
43		{ IRQ_DSMG600_PCI_INTA, -1, -1 },
44		{ IRQ_DSMG600_PCI_INTB, IRQ_DSMG600_PCI_INTC, IRQ_DSMG600_PCI_INTD },
45		{ IRQ_DSMG600_PCI_INTF, -1, -1 },
46	};
47
48	int irq = -1;
49
50	if (slot >= 1 && slot <= DSMG600_PCI_MAX_DEV &&
51		pin >= 1 && pin <= DSMG600_PCI_IRQ_LINES)
52		irq = pci_irq_table[slot-1][pin-1];
53
54	return irq;
55}
56
57struct hw_pci __initdata dsmg600_pci = {
58	.nr_controllers = 1,
59	.preinit	= dsmg600_pci_preinit,
60	.swizzle	= pci_std_swizzle,
61	.setup		= ixp4xx_setup,
62	.scan		= ixp4xx_scan_bus,
63	.map_irq	= dsmg600_map_irq,
64};
65
66int __init dsmg600_pci_init(void)
67{
68	if (machine_is_dsmg600())
69		pci_common_init(&dsmg600_pci);
70
71	return 0;
72}
73
74subsys_initcall(dsmg600_pci_init);
75