[PATCH v7 18/23] powerpc: add inline functions for cache related instructions

[Christophe Leroy]

This patch adds inline functions to use dcbz, dcbi, dcbf, dcbst
from C functions

Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxx>
---
v2: new
v3: no change
v4: no change
v5: no change
v6: no change
v7: no change

 arch/powerpc/include/asm/cache.h | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/powerpc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h
index 5f8229e..ffbafbf 100644
--- a/arch/powerpc/include/asm/cache.h
+++ b/arch/powerpc/include/asm/cache.h
@@ -69,6 +69,25 @@ extern void _set_L3CR(unsigned long);
 #define _set_L3CR(val)	do { } while(0)
 #endif
 
+static inline void dcbz(void *addr)
+{
+	__asm__ __volatile__ ("dcbz 0, %0" : : "r"(addr) : "memory");
+}
+
+static inline void dcbi(void *addr)
+{
+	__asm__ __volatile__ ("dcbi 0, %0" : : "r"(addr) : "memory");
+}
+
+static inline void dcbf(void *addr)
+{
+	__asm__ __volatile__ ("dcbf 0, %0" : : "r"(addr) : "memory");
+}
+
+static inline void dcbst(void *addr)
+{
+	__asm__ __volatile__ ("dcbst 0, %0" : : "r"(addr) : "memory");
+}
 #endif /* !__ASSEMBLY__ */
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_CACHE_H */
-- 
2.1.0