1/* 2 * arch/sh/drivers/pci/ops-landisk.c 3 * 4 * PCI initialization for the I-O DATA Device, Inc. LANDISK board 5 * 6 * Copyright (C) 2006 kogiidena 7 * 8 * May be copied or modified under the terms of the GNU General Public 9 * License. See linux/COPYING for more information. 10 */ 11#include <linux/kernel.h> 12#include <linux/types.h> 13#include <linux/init.h> 14#include <linux/delay.h> 15#include <linux/pci.h> 16#include "pci-sh4.h" 17 18int pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin) 19{ 20 /* 21 * slot0: pin1-4 = irq5,6,7,8 22 * slot1: pin1-4 = irq6,7,8,5 23 * slot2: pin1-4 = irq7,8,5,6 24 * slot3: pin1-4 = irq8,5,6,7 25 */ 26 int irq = ((slot + pin - 1) & 0x3) + 5; 27 28 if ((slot | (pin - 1)) > 0x3) { 29 printk("PCI: Bad IRQ mapping request for slot %d pin %c\n", 30 slot, pin - 1 + 'A'); 31 return -1; 32 } 33 return irq; 34} 35