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-rw-r--r--arch/powerpc/include/asm/io.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 5879fde56f3c..6c1297ec374c 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -385,6 +385,17 @@ static inline void __raw_writeq(unsigned long v, volatile void __iomem *addr)
{
*(volatile unsigned long __force *)PCI_FIX_ADDR(addr) = v;
}
+
+/*
+ * Real mode version of the above. stdcix is only supposed to be used
+ * in hypervisor real mode as per the architecture spec.
+ */
+static inline void __raw_rm_writeq(u64 val, volatile void __iomem *paddr)
+{
+ __asm__ __volatile__("stdcix %0,0,%1"
+ : : "r" (val), "r" (paddr) : "memory");
+}
+
#endif /* __powerpc64__ */
/*