powerpc/PCI: Add legacy PCI access via sysfs
This patch adds support for legacy_io and legacy_mem files in
bus class directories in sysfs for powerpc
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/arch/powerpc/include/asm/pci.h b/arch/powerpc/include/asm/pci.h
index 0e52c78..39d547f 100644
--- a/arch/powerpc/include/asm/pci.h
+++ b/arch/powerpc/include/asm/pci.h
@@ -123,6 +123,16 @@
/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
#define HAVE_PCI_MMAP 1
+extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
+ size_t count);
+extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
+ size_t count);
+extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
+ struct vm_area_struct *vma,
+ enum pci_mmap_state mmap_state);
+
+#define HAVE_PCI_LEGACY 1
+
#if defined(CONFIG_PPC64) || defined(CONFIG_NOT_COHERENT_CACHE)
/*
* For 64-bit kernels, pci_unmap_{single,page} is not a nop.
@@ -226,5 +236,6 @@
extern void pcibios_do_bus_setup(struct pci_bus *bus);
extern void pcibios_fixup_of_probed_bus(struct pci_bus *bus);
+
#endif /* __KERNEL__ */
#endif /* __ASM_POWERPC_PCI_H */