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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-08-07 09:55:03 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-08-07 09:55:03 +0100 |
| commit | 4fb8af10d0fd09372d52966b76922b9e82bbc950 (patch) | |
| tree | d240e4d40357583e3f3eb228dccf20122a5b31ed /arch/powerpc/include/asm/synch.h | |
| parent | f44f82e8a20b98558486eb14497b2f71c78fa325 (diff) | |
| parent | 64a99d2a8c3ed5c4e39f3ae1cc682aa8fd3977fc (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes
Diffstat (limited to 'arch/powerpc/include/asm/synch.h')
| -rw-r--r-- | arch/powerpc/include/asm/synch.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/synch.h b/arch/powerpc/include/asm/synch.h new file mode 100644 index 000000000000..45963e80f557 --- /dev/null +++ b/arch/powerpc/include/asm/synch.h @@ -0,0 +1,44 @@ +#ifndef _ASM_POWERPC_SYNCH_H +#define _ASM_POWERPC_SYNCH_H +#ifdef __KERNEL__ + +#include <linux/stringify.h> +#include <asm/feature-fixups.h> + +#ifndef __ASSEMBLY__ +extern unsigned int __start___lwsync_fixup, __stop___lwsync_fixup; +extern void do_lwsync_fixups(unsigned long value, void *fixup_start, + void *fixup_end); + +static inline void eieio(void) +{ + __asm__ __volatile__ ("eieio" : : : "memory"); +} + +static inline void isync(void) +{ + __asm__ __volatile__ ("isync" : : : "memory"); +} +#endif /* __ASSEMBLY__ */ + +#if defined(__powerpc64__) +# define LWSYNC lwsync +#elif defined(CONFIG_E500) +# define LWSYNC \ + START_LWSYNC_SECTION(96); \ + sync; \ + MAKE_LWSYNC_SECTION_ENTRY(96, __lwsync_fixup); +#else +# define LWSYNC sync +#endif + +#ifdef CONFIG_SMP +#define ISYNC_ON_SMP "\n\tisync\n" +#define LWSYNC_ON_SMP stringify_in_c(LWSYNC) "\n" +#else +#define ISYNC_ON_SMP +#define LWSYNC_ON_SMP +#endif + +#endif /* __KERNEL__ */ +#endif /* _ASM_POWERPC_SYNCH_H */ |