2 * Implement the default iomap interfaces
4 * (C) Copyright 2004 Linus Torvalds
6 * (C) Copyright 2007 MIPS Technologies, Inc.
10 #include <linux/export.h>
13 #ifdef CONFIG_PCI_DRIVERS_LEGACY
15 void __iomem *__pci_ioport_map(struct pci_dev *dev,
16 unsigned long port, unsigned int nr)
18 struct pci_controller *ctrl = dev->bus->sysdata;
19 unsigned long base = ctrl->io_map_base;
21 /* This will eventually become a BUG_ON but for now be gentle */
22 if (unlikely(!ctrl->io_map_base)) {
23 struct pci_bus *bus = dev->bus;
29 ctrl->io_map_base = base = mips_io_port_base;
31 sprintf(name, "%04x:%02x", pci_domain_nr(bus), bus->number);
32 printk(KERN_WARNING "io_map_base of root PCI bus %s unset. "
33 "Trying to continue but you better\nfix this issue or "
36 #ifdef CONFIG_PCI_DOMAINS
37 panic("To avoid data corruption io_map_base MUST be set with "
38 "multiple PCI domains.");
42 return (void __iomem *) (ctrl->io_map_base + port);
45 #endif /* CONFIG_PCI_DRIVERS_LEGACY */
47 void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
52 EXPORT_SYMBOL(pci_iounmap);