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powerpc/405: move PPC405_ERR77 in asm-405.h

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Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy
2018-07-05 16:24:55 +00:00
committed by Michael Ellerman
parent 8c58259bba
commit 36a7eeaff7
11 changed files with 27 additions and 15 deletions
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19
arch/powerpc/include/asm/asm-405.h Normal file
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@@ -0,0 +1,19 @@
#ifndef _ASM_POWERPC_ASM_405_H
#define _ASM_POWERPC_ASM_405_H
#include <asm/asm-const.h>
#ifdef __KERNEL__
#ifdef CONFIG_IBM405_ERR77
/* Erratum #77 on the 405 means we need a sync or dcbt before every
* stwcx. The old ATOMIC_SYNC_FIX covered some but not all of this.
*/
#define PPC405_ERR77(ra,rb) stringify_in_c(dcbt ra, rb;)
#define PPC405_ERR77_SYNC stringify_in_c(sync;)
#else
#define PPC405_ERR77(ra,rb)
#define PPC405_ERR77_SYNC
#endif
#endif
#endif /* _ASM_POWERPC_ASM_405_H */