Merge branch 'x86/um-header' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86/um-header' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (26 commits)
  x86: canonicalize remaining header guards
  x86: drop double underscores from header guards
  x86: Fix ASM_X86__ header guards
  x86, um: get rid of uml-config.h
  x86, um: get rid of arch/um/Kconfig.arch
  x86, um: get rid of arch/um/os symlink
  x86, um: get rid of excessive includes of uml-config.h
  x86, um: get rid of header symlinks
  x86, um: merge Kconfig.i386 and Kconfig.x86_64
  x86, um: get rid of sysdep symlink
  x86, um: trim the junk from uml ptrace-*.h
  x86, um: take vm-flags.h to sysdep
  x86, um: get rid of uml asm/arch
  x86, um: get rid of uml highmem.h
  x86, um: get rid of uml unistd.h
  x86, um: get rid of system.h -> system.h include
  x86, um: uml atomic.h is not needed anymore
  x86, um: untangle uml ldt.h
  x86, um: get rid of more uml asm/arch uses
  x86, um: remove dead header (uml module-generic.h; never used these days)
  ...

1 files changed, 57 insertions, 0 deletions

diff --git a/arch/um/include/asm/io.h b/arch/um/include/asm/io.h
new file mode 100644
index 000000000000..44e8b8c772ae
--- /dev/null
+++ b/arch/um/include/asm/io.h
@@ -0,0 +1,57 @@
+#ifndef __UM_IO_H
+#define __UM_IO_H
+
+#include "asm/page.h"
+
+#define IO_SPACE_LIMIT 0xdeadbeef /* Sure hope nothing uses this */
+
+static inline int inb(unsigned long i) { return(0); }
+static inline void outb(char c, unsigned long i) { }
+
+/*
+ * Change virtual addresses to physical addresses and vv.
+ * These are pretty trivial
+ */
+static inline unsigned long virt_to_phys(volatile void * address)
+{
+	return __pa((void *) address);
+}
+
+static inline void * phys_to_virt(unsigned long address)
+{
+	return __va(address);
+}
+
+/*
+ * Convert a physical pointer to a virtual kernel pointer for /dev/mem
+ * access
+ */
+#define xlate_dev_mem_ptr(p)	__va(p)
+
+/*
+ * Convert a virtual cached pointer to an uncached pointer
+ */
+#define xlate_dev_kmem_ptr(p)	p
+
+static inline void writeb(unsigned char b, volatile void __iomem *addr)
+{
+	*(volatile unsigned char __force *) addr = b;
+}
+static inline void writew(unsigned short b, volatile void __iomem *addr)
+{
+	*(volatile unsigned short __force *) addr = b;
+}
+static inline void writel(unsigned int b, volatile void __iomem *addr)
+{
+	*(volatile unsigned int __force *) addr = b;
+}
+static inline void writeq(unsigned int b, volatile void __iomem *addr)
+{
+	*(volatile unsigned long long __force *) addr = b;
+}
+#define __raw_writeb writeb
+#define __raw_writew writew
+#define __raw_writel writel
+#define __raw_writeq writeq
+
+#endif