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Commit 319f551a authored by Catalin Marinas's avatar Catalin Marinas Committed by Russell King
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ARM: 5994/1: ARM: Add outer_cache_fns.sync function pointer (2/4) 



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: default avatarCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 33f663ff

arch/arm/include/asm/outercache.h

+14 −0
Original line number Diff line number Diff line
@@ -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 */

arch/arm/mm/Kconfig

+6 −0
Original line number Diff line number Diff line
@@ -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