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-rw-r--r--arch/ia64/mm/Makefile2
-rw-r--r--arch/ia64/mm/ioremap.c43
-rw-r--r--include/asm-ia64/io.h15
3 files changed, 46 insertions, 14 deletions
diff --git a/arch/ia64/mm/Makefile b/arch/ia64/mm/Makefile
index d78d20f0a0f..bb0a01a8187 100644
--- a/arch/ia64/mm/Makefile
+++ b/arch/ia64/mm/Makefile
@@ -2,7 +2,7 @@
# Makefile for the ia64-specific parts of the memory manager.
#
-obj-y := init.o fault.o tlb.o extable.o
+obj-y := init.o fault.o tlb.o extable.o ioremap.o
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
obj-$(CONFIG_NUMA) += numa.o
diff --git a/arch/ia64/mm/ioremap.c b/arch/ia64/mm/ioremap.c
new file mode 100644
index 00000000000..62328621f99
--- /dev/null
+++ b/arch/ia64/mm/ioremap.c
@@ -0,0 +1,43 @@
+/*
+ * (c) Copyright 2006 Hewlett-Packard Development Company, L.P.
+ * Bjorn Helgaas <bjorn.helgaas@hp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/compiler.h>
+#include <linux/module.h>
+#include <linux/efi.h>
+#include <asm/io.h>
+
+static inline void __iomem *
+__ioremap (unsigned long offset, unsigned long size)
+{
+ return (void __iomem *) (__IA64_UNCACHED_OFFSET | offset);
+}
+
+void __iomem *
+ioremap (unsigned long offset, unsigned long size)
+{
+ if (efi_mem_attribute_range(offset, size, EFI_MEMORY_UC))
+ return __ioremap(offset, size);
+
+ if (efi_mem_attribute_range(offset, size, EFI_MEMORY_WB))
+ return phys_to_virt(offset);
+
+ /*
+ * Someday this should check ACPI resources so we
+ * can do the right thing for hot-plugged regions.
+ */
+ return __ioremap(offset, size);
+}
+EXPORT_SYMBOL(ioremap);
+
+void __iomem *
+ioremap_nocache (unsigned long offset, unsigned long size)
+{
+ return __ioremap(offset, size);
+}
+EXPORT_SYMBOL(ioremap_nocache);
diff --git a/include/asm-ia64/io.h b/include/asm-ia64/io.h
index acba019b08e..c2e3742108b 100644
--- a/include/asm-ia64/io.h
+++ b/include/asm-ia64/io.h
@@ -416,25 +416,14 @@ __writeq (unsigned long val, volatile void __iomem *addr)
# define outl_p outl
#endif
-/*
- * An "address" in IO memory space is not clearly either an integer or a pointer. We will
- * accept both, thus the casts.
- *
- * On ia-64, we access the physical I/O memory space through the uncached kernel region.
- */
-static inline void __iomem *
-ioremap (unsigned long offset, unsigned long size)
-{
- return (void __iomem *) (__IA64_UNCACHED_OFFSET | (offset));
-}
+extern void __iomem * ioremap(unsigned long offset, unsigned long size);
+extern void __iomem * ioremap_nocache (unsigned long offset, unsigned long size);
static inline void
iounmap (volatile void __iomem *addr)
{
}
-#define ioremap_nocache(o,s) ioremap(o,s)
-
/* Use normal IO mappings for DMI */
#define dmi_ioremap ioremap
#define dmi_iounmap(x,l) iounmap(x)