ebsa285-pci.c

来自「Linux内核源代码 为压缩文件 是<<Linux内核>&gt」· C语言 代码 · 共 40 行

/*
 * linux/arch/arm/mach-footbridge/ebsa285-pci.c
 *
 * PCI bios-type initialisation for PCI machines
 *
 * Bits taken from various places.
 */
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/init.h>

#include <asm/irq.h>
#include <asm/mach/pci.h>

static int irqmap_ebsa285[] __initdata = { IRQ_IN3, IRQ_IN1, IRQ_IN0, IRQ_PCI };

static u8 __init ebsa285_swizzle(struct pci_dev *dev, u8 *pin)
{
	return PCI_SLOT(dev->devfn);
}

static int __init ebsa285_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
	if (dev->vendor == PCI_VENDOR_ID_CONTAQ &&
	    dev->device == PCI_DEVICE_ID_CONTAQ_82C693)
		switch (PCI_FUNC(dev->devfn)) {
			case 1:	return 14;
			case 2:	return 15;
			case 3:	return 12;
		}

	return irqmap_ebsa285[(slot + pin) & 3];
}

struct hw_pci ebsa285_pci __initdata = {
	init:		dc21285_init,
	swizzle:	ebsa285_swizzle,
	map_irq:	ebsa285_map_irq,
};