[PATCH] mips: add pcibios_bus_to_resource

This patch has added pcibios_bus_to_resource to MIPS.

Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 19 insertions, 0 deletions

diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index 8a5b52250bda..a8d499b0a36f 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -292,8 +292,25 @@ pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
         region->end = res->end - offset;
 }
 
+void __devinit
+pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
+                        struct pci_bus_region *region)
+{
+        struct pci_controller *hose = (struct pci_controller *)dev->sysdata;
+        unsigned long offset = 0;
+
+        if (res->flags & IORESOURCE_IO)
+                offset = hose->io_offset;
+        else if (res->flags & IORESOURCE_MEM)
+                offset = hose->mem_offset;
+
+        res->start = region->start + offset;
+        res->end = region->end + offset;
+}
+
 #ifdef CONFIG_HOTPLUG
 EXPORT_SYMBOL(pcibios_resource_to_bus);
+EXPORT_SYMBOL(pcibios_bus_to_resource);
 EXPORT_SYMBOL(PCIBIOS_MIN_IO);
 EXPORT_SYMBOL(PCIBIOS_MIN_MEM);
 #endif
diff --git a/include/asm-mips/pci.h b/include/asm-mips/pci.h
index 049f01f648ed..c9a00ca1c012 100644
--- a/include/asm-mips/pci.h
+++ b/include/asm-mips/pci.h
@@ -142,6 +142,8 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 
 extern void pcibios_resource_to_bus(struct pci_dev *dev,
         struct pci_bus_region *region, struct resource *res);
+extern void pcibios_bus_to_resource(struct pci_dev *dev,
+        struct resource *res, struct pci_bus_region *region);
 
 #ifdef CONFIG_PCI_DOMAINS