diff options
Diffstat (limited to 'arch/ppc')
| -rw-r--r-- | arch/ppc/kernel/pci.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/ppc/kernel/pci.c b/arch/ppc/kernel/pci.c index 0aa184112fb..af364003880 100644 --- a/arch/ppc/kernel/pci.c +++ b/arch/ppc/kernel/pci.c @@ -1805,6 +1805,21 @@ void pci_iounmap(struct pci_dev *dev, void __iomem *addr) EXPORT_SYMBOL(pci_iomap); EXPORT_SYMBOL(pci_iounmap); +unsigned int pci_address_to_pio(phys_addr_t address) +{ + struct pci_controller* hose = hose_head; + + for (; hose; hose = hose->next) { + unsigned int size = hose->io_resource.end - + hose->io_resource.start + 1; + if (address >= hose->io_base_phys && + address < (hose->io_base_phys + size)) + return (unsigned int)hose->io_base_virt + + (address - hose->io_base_phys); + } + return (unsigned int)-1; +} +EXPORT_SYMBOL(pci_address_to_pio); /* * Null PCI config access functions, for the case when we can't |