arch/mips/ath79/pci.c

/*
 *  Atheros AR71XX/AR724X specific PCI setup code
 *
 *  Copyright (C) 2011 René Bolldorf <xsecute@googlemail.com>
 *
 *  This program is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License version 2 as published
 *  by the Free Software Foundation.
 */

#include <linux/pci.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/irq.h>
#include <asm/mach-ath79/pci.h>
#include "pci.h"

static int (*ath79_pci_plat_dev_init)(struct pci_dev *dev);
static struct ar724x_pci_data *pci_data;
static int pci_data_size;

void ar724x_pci_add_data(struct ar724x_pci_data *data, int size)
{
	pci_data	= data;
	pci_data_size	= size;
}

int __init pcibios_map_irq(const struct pci_dev *dev, uint8_t slot, uint8_t pin)
{
	unsigned int devfn = dev->devfn;
	int irq = -1;

	if (devfn > pci_data_size - 1)
		return irq;

	irq = pci_data[devfn].irq;

	return irq;
}

int pcibios_plat_dev_init(struct pci_dev *dev)
{
	if (ath79_pci_plat_dev_init)
		return ath79_pci_plat_dev_init(dev);

	return 0;
}

void __init ath79_pci_set_plat_dev_init(int (*func)(struct pci_dev *dev))
{
	ath79_pci_plat_dev_init = func;
}

int __init ath79_register_pci(void)
{
	if (soc_is_ar724x())
		return ar724x_pcibios_init(ATH79_CPU_IRQ_IP2);

	return -ENODEV;
}