1/*
2 * Implement the default iomap interfaces
3 *
4 * (C) Copyright 2004 Linus Torvalds
5 * (C) Copyright 2006 Ralf Baechle <ralf@linux-mips.org>
6 * (C) Copyright 2007 MIPS Technologies, Inc.
7 *     written by Ralf Baechle <ralf@linux-mips.org>
8 */
9#include <linux/pci.h>
10#include <linux/module.h>
11#include <asm/io.h>
12
13void __iomem *__pci_ioport_map(struct pci_dev *dev,
14			       unsigned long port, unsigned int nr)
15{
16	struct pci_controller *ctrl = dev->bus->sysdata;
17	unsigned long base = ctrl->io_map_base;
18
19	/* This will eventually become a BUG_ON but for now be gentle */
20	if (unlikely(!ctrl->io_map_base)) {
21		struct pci_bus *bus = dev->bus;
22		char name[8];
23
24		while (bus->parent)
25			bus = bus->parent;
26
27		ctrl->io_map_base = base = mips_io_port_base;
28
29		sprintf(name, "%04x:%02x", pci_domain_nr(bus), bus->number);
30		printk(KERN_WARNING "io_map_base of root PCI bus %s unset.  "
31		       "Trying to continue but you better\nfix this issue or "
32		       "report it to linux-mips@linux-mips.org or your "
33		       "vendor.\n", name);
34#ifdef CONFIG_PCI_DOMAINS
35		panic("To avoid data corruption io_map_base MUST be set with "
36		      "multiple PCI domains.");
37#endif
38	}
39
40	return (void __iomem *) (ctrl->io_map_base + port);
41}
42
43void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
44{
45	iounmap(addr);
46}
47
48EXPORT_SYMBOL(pci_iounmap);
49