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[PATCH v2 21/25] powerpc: add inline functions for cache related instructions

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  [PATCH v2 21/25] powerpc: add inline functions for cache related  instructions Christophe Leroy <christophe.leroy@c-s.fr> - 2015-09-22 19:00 +0200
    Re: [PATCH v2 21/25] powerpc: add inline functions for cache related  instructions Scott Wood <scottwood@freescale.com> - 2015-09-29 02:30 +0200

#1230493 — [PATCH v2 21/25] powerpc: add inline functions for cache related instructions

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

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
New in v2

 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 0dc42c5..a2de4f0 100644
--- a/arch/powerpc/include/asm/cache.h
+++ b/arch/powerpc/include/asm/cache.h
@@ -76,6 +76,25 @@ 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

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#1234592

On Tue, Sep 22, 2015 at 06:51:11PM +0200, Christophe Leroy wrote:
> This patch adds inline functions to use dcbz, dcbi, dcbf, dcbst
> from C functions
> 
> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
> ---
> New in v2
> 
>  arch/powerpc/include/asm/cache.h | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)

This patch needs to come before patch 20/25, which uses dcbz().

-Scott
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