| /* |
| * arch/sh/drivers/pci/ops-landisk.c |
| * |
| * PCI initialization for the I-O DATA Device, Inc. LANDISK board |
| * |
| * Copyright (C) 2006 kogiidena |
| * |
| * May be copied or modified under the terms of the GNU General Public |
| * License. See linux/COPYING for more information. |
| */ |
| #include <linux/kernel.h> |
| #include <linux/types.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/pci.h> |
| #include "pci-sh4.h" |
| |
| int pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin) |
| { |
| /* |
| * slot0: pin1-4 = irq5,6,7,8 |
| * slot1: pin1-4 = irq6,7,8,5 |
| * slot2: pin1-4 = irq7,8,5,6 |
| * slot3: pin1-4 = irq8,5,6,7 |
| */ |
| int irq = ((slot + pin - 1) & 0x3) + 5; |
| |
| if ((slot | (pin - 1)) > 0x3) { |
| printk("PCI: Bad IRQ mapping request for slot %d pin %c\n", |
| slot, pin - 1 + 'A'); |
| return -1; |
| } |
| return irq; |
| } |