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ARM: 5994/1: ARM: Add outer_cache_fns.sync function pointer (2/4)

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This patch introduces the outer_cache_fns.sync function pointer together
with the OUTER_CACHE_SYNC config option that can be used to drain the
write buffer of the outer cache.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Catalin Marinas 2010-03-24 16:47:53 +01:00 committed by Russell King
parent 33f663ff91
commit 319f551a0a
2 changed files with 20 additions and 0 deletions
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14
arch/arm/include/asm/outercache.h
View File

@ -25,6 +25,9 @@ struct outer_cache_fns {
void (*inv_range)(unsigned long, unsigned long);
void (*clean_range)(unsigned long, unsigned long);
void (*flush_range)(unsigned long, unsigned long);
#ifdef CONFIG_OUTER_CACHE_SYNC
void (*sync)(void);
#endif
};
#ifdef CONFIG_OUTER_CACHE
@ -58,4 +61,15 @@ static inline void outer_flush_range(unsigned long start, unsigned long end)
#endif
#ifdef CONFIG_OUTER_CACHE_SYNC
static inline void outer_sync(void)
{
if (outer_cache.sync)
outer_cache.sync();
}
#else
static inline void outer_sync(void)
{ }
#endif
#endif /* __ASM_OUTERCACHE_H */

6
arch/arm/mm/Kconfig
View File

@ -736,6 +736,12 @@ config NEEDS_SYSCALL_FOR_CMPXCHG
config OUTER_CACHE
bool
config OUTER_CACHE_SYNC
bool
help
The outer cache has a outer_cache_fns.sync function pointer
that can be used to drain the write buffer of the outer cache.
config CACHE_FEROCEON_L2
bool "Enable the Feroceon L2 cache controller"
depends on ARCH_KIRKWOOD || ARCH_MV78XX0