diff options
| author | Greg Ungerer <gerg@uclinux.org> | 2012-05-02 09:02:21 +0200 |
|---|---|---|
| committer | Greg Ungerer <gerg@uclinux.org> | 2012-05-20 13:22:08 +0200 |
| commit | 1744bd921cd1037f0415574e0f8a3611984ecc7c (patch) | |
| tree | a2607da59035bf3758e0e3c0c04cde6e1fd633ca | |
| parent | m68knommu: move the 54xx platform code into the common ColdFire code directory (diff) | |
| download | linux-1744bd921cd1037f0415574e0f8a3611984ecc7c.tar.xz linux-1744bd921cd1037f0415574e0f8a3611984ecc7c.zip | |
m68knommu: reorganize the no-MMU cache flushing to match m68k
Introduce cache_push() and cache_clear() functions for the non-MMU m68k
devices. With these in place we can more easily merge some of the common
m68k arch code.
In particular by reorganizing the __flush_cache_all() code and separating
the cache push and clear functions it becomes trivial to implement the
new cache_push() and cache_clear() functions.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
| -rw-r--r-- | arch/m68k/include/asm/cacheflush_no.h | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/arch/m68k/include/asm/cacheflush_no.h b/arch/m68k/include/asm/cacheflush_no.h index cb88aa96c4f1..7cafb537d03c 100644 --- a/arch/m68k/include/asm/cacheflush_no.h +++ b/arch/m68k/include/asm/cacheflush_no.h @@ -30,11 +30,8 @@ void mcf_cache_push(void); -static inline void __flush_cache_all(void) +static inline void __clear_cache_all(void) { -#ifdef CACHE_PUSH - mcf_cache_push(); -#endif #ifdef CACHE_INVALIDATE __asm__ __volatile__ ( "movel %0, %%d0\n\t" @@ -44,6 +41,14 @@ static inline void __flush_cache_all(void) #endif } +static inline void __flush_cache_all(void) +{ +#ifdef CACHE_PUSH + mcf_cache_push(); +#endif + __clear_cache_all(); +} + /* * Some ColdFire parts implement separate instruction and data caches, * on those we should just flush the appropriate cache. If we don't need @@ -76,4 +81,23 @@ static inline void __flush_dcache_all(void) __asm__ __volatile__ ( "nop" ); #endif } + +/* + * Push cache entries at supplied address. We want to write back any dirty + * data and the invalidate the cache lines associated with this address. + */ +static inline void cache_push(unsigned long paddr, int len) +{ + __flush_cache_all(); +} + +/* + * Clear cache entries at supplied address (that is don't write back any + * dirty data). + */ +static inline void cache_clear(unsigned long paddr, int len) +{ + __clear_cache_all(); +} + #endif /* _M68KNOMMU_CACHEFLUSH_H */ |