[PATCH] powerpc: Update OF address parsers

This updates the OF address parsers to return the IO flags
indicating the type of address obtained. It also adds a PCI
call for converting physical addresses that hit IO space into
into IO tokens, and add routines that return the translated
addresses into struct resource

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 5f241fcd88e8..0988222741f0 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -1181,6 +1181,20 @@ void phbs_remap_io(void)
                 remap_bus_range(hose->bus);
 }
 
+unsigned int pci_address_to_pio(phys_addr_t address)
+{
+        struct pci_controller *hose, *tmp;
+
+        list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
+                if (address >= hose->io_base_phys &&
+                    address < (hose->io_base_phys + hose->pci_io_size))
+                        return (unsigned int)hose->io_base_virt +
+                                (address - hose->io_base_phys);
+        }
+        return (unsigned int)-1;
+}
+EXPORT_SYMBOL_GPL(pci_address_to_pio);
+
 static void __devinit fixup_resource(struct resource *res, struct pci_dev *dev)
 {
         struct pci_controller *hose = pci_bus_to_host(dev->bus);