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/*
* Code borrowed from powerpc/kernel/pci-common.c
*
* Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM
* Copyright (C) 2014 ARM Ltd.
*
* 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/init.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/of_pci.h>
#include <linux/of_platform.h>
#include <linux/slab.h>
#include <asm/pci-bridge.h>
/*
* Called after each bus is probed, but before its children are examined
*/
void pcibios_fixup_bus(struct pci_bus *bus)
{
/* nothing to do, expected to be removed in the future */
}
/*
* We don't have to worry about legacy ISA devices, so nothing to do here
*/
resource_size_t pcibios_align_resource(void *data, const struct resource *res,
resource_size_t size, resource_size_t align)
{
return res->start;
}
/*
* Try to assign the IRQ number from DT when adding a new device
*/
int pcibios_add_device(struct pci_dev *dev)
{
dev->irq = of_irq_parse_and_map_pci(dev, 0, 0);
return 0;
}
#ifdef CONFIG_PCI_DOMAINS_GENERIC
static bool dt_domain_found = false;
void pci_bus_assign_domain_nr(struct pci_bus *bus, struct device *parent)
{
int domain = of_get_pci_domain_nr(parent->of_node);
if (domain >= 0) {
dt_domain_found = true;
} else if (dt_domain_found == true) {
dev_err(parent, "Node %s is missing \"linux,pci-domain\" property in DT\n",
parent->of_node->full_name);
return;
} else {
domain = pci_get_new_domain_nr();
}
bus->domain_nr = domain;
}
#endif
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