/*
 * AmigaOne platform PCI setup
 *
 * Copyright 2007 Gerhard Pircher (gerhard_pircher@gmx.net)
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/string.h>
#include <linux/init.h>

#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/irq.h>
#include <asm/machdep.h>
#include <asm/sections.h>
#include <asm/pci-bridge.h>

void __init
amigaone_find_bridges(void)
{
	struct device_node *dev;
	const int *bus_range;
	int len, index = -1;
	struct pci_controller *hose;
	struct device_node *root = of_find_node_by_path("/");

	for (dev = root->child; dev != NULL; dev = dev->sibling) {
		if (dev->type == NULL || strcmp(dev->type, "pci") != 0)
			continue;
		++index;

		bus_range = of_get_property(dev, "bus-range", &len);
		if (bus_range == NULL || len < 2 * sizeof(int)) {
			printk(KERN_WARNING "Can't get bus-range for %s\n",
				dev->full_name);
			continue;
		}

/*		if (bus_range[1] == bus_range[0])
			printk(KERN_INFO "PCI bus %d", bus_range[0]);
		else
			printk(KERN_INFO "PCI buses %d..%d",
			       bus_range[0], bus_range[1]);
		printk(" controlled by %s", dev->full_name); */

		hose = pcibios_alloc_controller(dev);
		if (!hose) {
			printk("Can't allocate PCI controller structure for %s\n",
				dev->full_name);
			continue;
		}
		hose->arch_data = dev;
		hose->first_busno = bus_range[0];
		hose->last_busno = bus_range[1];

		setup_indirect_pci(hose, 0xfec00cf8, 0xfee00cfc, 0);

		/* Interpret the "ranges" property */
		/* This also maps the I/O region and sets isa_io/mem_base. */
		pci_process_bridge_OF_ranges(hose, dev, index == 0);
	}

	of_node_put(root);
}