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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2006-06-22 15:05:36 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-06-28 17:59:48 +0100
commit5924486dc0f205ebc2bbf4c262eec902ff38e802 (patch)
treeacde32ec730762ed2d0a742990cfe2dc7f6e5cf0 /arch/arm/mm/nommu.c
parentf9c21a6ee7e040be0f623a6b8dcfb5ec4f7532f5 (diff)
[ARM] nommu: add stubs for ioremap and friends
nommu doesn't have any form of remapping support, so ioremap, etc become stubs which just return the casted address, doing nothing else. Move ioport_map(), ioport_unmap(), pci_iomap(), pci_iounmap() into a separate file which is always built. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/nommu.c')
-rw-r--r--arch/arm/mm/nommu.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
new file mode 100644
index 00000000000..934c551d93d
--- /dev/null
+++ b/arch/arm/mm/nommu.c
@@ -0,0 +1,30 @@
+/*
+ * linux/arch/arm/mm/nommu.c
+ *
+ * ARM uCLinux supporting functions.
+ */
+#include <linux/module.h>
+
+#include <asm/io.h>
+#include <asm/page.h>
+
+void __iomem *__ioremap_pfn(unsigned long pfn, unsigned long offset,
+ size_t size, unsigned long flags)
+{
+ if (pfn >= (0x100000000ULL >> PAGE_SHIFT))
+ return NULL;
+ return (void __iomem *) (offset + (pfn << PAGE_SHIFT));
+}
+EXPORT_SYMBOL(__ioremap_pfn);
+
+void __iomem *__ioremap(unsigned long phys_addr, size_t size,
+ unsigned long flags)
+{
+ return (void __iomem *)phys_addr;
+}
+EXPORT_SYMBOL(__ioremap);
+
+void __iounmap(void __iomem *addr)
+{
+}
+EXPORT_SYMBOL(__iounmap);