Actually route cPCI interrupts. Update inaccurate comments.

/*

 * Copyright (C) 2003, 2004  Ralf Baechle (ralf@linux-mips.org)

 * Copyright (C) 2005  MIPS Technologies, Inc.  All rights reserved.

 *	Author:	 Maciej W. Rozycki <macro@mips.com>

 *

 *  This program is free software; you can distribute it and/or modify it

 *  under the terms of the GNU General Public License (Version 2) as

 *  published by the Free Software Foundation.

 *

 *  This program is distributed in the hope it will be useful, but WITHOUT

 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 *  for more details.

 *

 *  You should have received a copy of the GNU General Public License along

 *  with this program; if not, write to the Free Software Foundation, Inc.,

 *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.

 */

#include <linux/config.h>

#include <linux/init.h>

#include <linux/pci.h>

#include <asm/mips-boards/atlasint.h>

#define INTD		ATLASINT_INTD

#define INTC		ATLASINT_INTC

#define INTB		ATLASINT_INTB

#define PCIA		ATLASINT_PCIA

#define PCIB		ATLASINT_PCIB

#define PCIC		ATLASINT_PCIC

#define PCID		ATLASINT_PCID

#define INTA		ATLASINT_INTA

#define SCSI		ATLASINT_SCSI

#define INTB		ATLASINT_INTB

#define ETH		ATLASINT_ETH

#define INTC		ATLASINT_INTC

#define SCSI		ATLASINT_SCSI

#define INTD		ATLASINT_INTD

static char irq_tab[][5] __initdata = {

	/*      INTA    INTB    INTC    INTD */

	{0,	0,	0,	0,	0 },	/* 12: Unused */

	{0,	0,	0,	0,	0 },	/* 13: Unused */

	{0,	0,	0,	0,	0 },	/* 14: Unused */

	{0,	0,	0,	0,	0 },	/* 15: Unused */

	{0,	PCIA,	PCIB,	PCIC,	PCID },	/* 15: cPCI (behind 21150) */

	{0,	SCSI,	0,	0,	0 },	/* 16: SYM53C810A SCSI */

	{0,	0,	0,	0,	0 },	/* 17: Core */

	{0,	INTA,	INTB,	INTC,	INTD },	/* 18: PCI Slot 1 */

	{0,	ETH,	0,	0,	0 },	/* 19: SAA9730 Ethernet */

	{0,	0,	0,	0,	0 },	/* 20: PCI Slot 3 */

	{0,	0,	0,	0,	0 }	/* 21: PCI Slot 4 */

	{0,	INTA,	INTB,	INTC,	INTD },	/* 18: PCI Slot */

	{0,	ETH,	0,	0,	0 },	/* 19: SAA9730 Eth. et al. */

	{0,	0,	0,	0,	0 },	/* 20: Unused */

	{0,	0,	0,	0,	0 }	/* 21: Unused */

};

int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)