X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fpowerpc%2Fboot%2Fio.h;h=7c09f4861fe18b32eba553dc3a72679726142f7b;hb=64e71303e44f3697e4568147caa966de74bdb4fb;hp=32974ed49e02eac1163905566f6c88a2ca78cc43;hpb=40b20c257a13c5a526ac540bc5e43d0fdf29792a;p=linux-2.6-omap-h63xx.git

diff --git a/arch/powerpc/boot/io.h b/arch/powerpc/boot/io.h
index 32974ed49e0..7c09f4861fe 100644
--- a/arch/powerpc/boot/io.h
+++ b/arch/powerpc/boot/io.h
@@ -1,9 +1,12 @@
 #ifndef _IO_H
 #define __IO_H
+
+#include "types.h"
+
 /*
  * Low-level I/O routines.
  *
- * Copied from <file:include/asm-powerpc/io.h> (which has no copyright)
+ * Copied from <file:arch/powerpc/include/asm/io.h> (which has no copyright)
  */
 static inline int in_8(const volatile unsigned char *addr)
 {
@@ -20,6 +23,37 @@ static inline void out_8(volatile unsigned char *addr, int val)
 			     : "=m" (*addr) : "r" (val));
 }
 
+static inline unsigned in_le16(const volatile u16 *addr)
+{
+	unsigned ret;
+
+	__asm__ __volatile__("lhbrx %0,0,%1; twi 0,%0,0; isync"
+			     : "=r" (ret) : "r" (addr), "m" (*addr));
+
+	return ret;
+}
+
+static inline unsigned in_be16(const volatile u16 *addr)
+{
+	unsigned ret;
+
+	__asm__ __volatile__("lhz%U1%X1 %0,%1; twi 0,%0,0; isync"
+			     : "=r" (ret) : "m" (*addr));
+	return ret;
+}
+
+static inline void out_le16(volatile u16 *addr, int val)
+{
+	__asm__ __volatile__("sthbrx %1,0,%2; sync" : "=m" (*addr)
+			     : "r" (val), "r" (addr));
+}
+
+static inline void out_be16(volatile u16 *addr, int val)
+{
+	__asm__ __volatile__("sth%U0%X0 %1,%0; sync"
+			     : "=m" (*addr) : "r" (val));
+}
+
 static inline unsigned in_le32(const volatile unsigned *addr)
 {
 	unsigned ret;
@@ -50,4 +84,19 @@ static inline void out_be32(volatile unsigned *addr, int val)
 			     : "=m" (*addr) : "r" (val));
 }
 
+static inline void sync(void)
+{
+	asm volatile("sync" : : : "memory");
+}
+
+static inline void eieio(void)
+{
+	asm volatile("eieio" : : : "memory");
+}
+
+static inline void barrier(void)
+{
+	asm volatile("" : : : "memory");
+}
+
 #endif /* _IO_H */