/*
   * Implement the default iomap interfaces
   *
   * (C) Copyright 2004 Linus Torvalds
   * (C) Copyright 2006 Ralf Baechle <ralf@linux-mips.org>
   * (C) Copyright 2007 MIPS Technologies, Inc.
   *     written by Ralf Baechle <ralf@linux-mips.org>
   */
  #include <linux/pci.h>
  #include <linux/module.h>
  #include <asm/io.h>
  
  void __iomem *__pci_ioport_map(struct pci_dev *dev,
  			       unsigned long port, unsigned int nr)
  {
  	struct pci_controller *ctrl = dev->bus->sysdata;
  	unsigned long base = ctrl->io_map_base;
  
  	/* This will eventually become a BUG_ON but for now be gentle */
  	if (unlikely(!ctrl->io_map_base)) {
  		struct pci_bus *bus = dev->bus;
  		char name[8];
  
  		while (bus->parent)
  			bus = bus->parent;
  
  		ctrl->io_map_base = base = mips_io_port_base;
  
  		sprintf(name, "%04x:%02x", pci_domain_nr(bus), bus->number);
  		printk(KERN_WARNING "io_map_base of root PCI bus %s unset.  "
  		       "Trying to continue but you better
  fix this issue or "
  		       "report it to linux-mips@linux-mips.org or your "
  		       "vendor.
  ", name);
  #ifdef CONFIG_PCI_DOMAINS
  		panic("To avoid data corruption io_map_base MUST be set with "
  		      "multiple PCI domains.");
  #endif
  	}
  
  	return (void __iomem *) (ctrl->io_map_base + port);
  }
  
  void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
  {
  	iounmap(addr);
  }
  
  EXPORT_SYMBOL(pci_iounmap);