[POWERPC] Merge pcibios_resource_to_bus/bus_to_resource

This merges the PowerPC 32 and 64 bits version of pcibios_resource_to_bus
and pcibios_bus_to_resource().

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

1 files changed, 36 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 68102ce7e438..0245c989d30a 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -655,3 +655,39 @@ int pci_proc_domain(struct pci_bus *bus)
 #endif
 }
 
+void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
+			     struct resource *res)
+{
+	resource_size_t offset = 0, mask = (resource_size_t)-1;
+	struct pci_controller *hose = pci_bus_to_host(dev->bus);
+
+	if (!hose)
+		return;
+	if (res->flags & IORESOURCE_IO) {
+		offset = (unsigned long)hose->io_base_virt - _IO_BASE;
+		mask = 0xffffffffu;
+	} else if (res->flags & IORESOURCE_MEM)
+		offset = hose->pci_mem_offset;
+
+	region->start = (res->start - offset) & mask;
+	region->end = (res->end - offset) & mask;
+}
+EXPORT_SYMBOL(pcibios_resource_to_bus);
+
+void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
+			     struct pci_bus_region *region)
+{
+	resource_size_t offset = 0, mask = (resource_size_t)-1;
+	struct pci_controller *hose = pci_bus_to_host(dev->bus);
+
+	if (!hose)
+		return;
+	if (res->flags & IORESOURCE_IO) {
+		offset = (unsigned long)hose->io_base_virt - _IO_BASE;
+		mask = 0xffffffffu;
+	} else if (res->flags & IORESOURCE_MEM)
+		offset = hose->pci_mem_offset;
+	res->start = (region->start + offset) & mask;
+	res->end = (region->end + offset) & mask;
+}
+EXPORT_SYMBOL(pcibios_bus_to_resource);