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