X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=arch%2Fpowerpc%2Finclude%2Fasm%2Fio.h;h=f6fda8482f601b4dd557ad19df6cfeba11d41717;hb=2f7c68d8e6d47d9b66cc2c803e7d8a5b9768475d;hp=2fd1690b79d210702c123d6e54d7828ce521be9a;hpb=b75a2bf899b668b1d52de8846aafdbcf81349c73;p=cascardo%2Flinux.git

diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 2fd1690b79d2..f6fda8482f60 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -241,6 +241,35 @@ static inline void out_be64(volatile u64 __iomem *addr, u64 val)
 #endif
 #endif /* __powerpc64__ */
 
+
+/*
+ * Simple Cache inhibited accessors
+ * Unlike the DEF_MMIO_* macros, these don't include any h/w memory
+ * barriers, callers need to manage memory barriers on their own.
+ * These can only be used in hypervisor real mode.
+ */
+
+static inline u32 _lwzcix(unsigned long addr)
+{
+	u32 ret;
+
+	__asm__ __volatile__("lwzcix %0,0, %1"
+			     : "=r" (ret) : "r" (addr) : "memory");
+	return ret;
+}
+
+static inline void _stbcix(u64 addr, u8 val)
+{
+	__asm__ __volatile__("stbcix %0,0,%1"
+		: : "r" (val), "r" (addr) : "memory");
+}
+
+static inline void _stwcix(u64 addr, u32 val)
+{
+	__asm__ __volatile__("stwcix %0,0,%1"
+		: : "r" (val), "r" (addr) : "memory");
+}
+
 /*
  * Low level IO stream instructions are defined out of line for now
  */