diff options
Diffstat (limited to 'arch/m68k/include/asm/cacheflush_no.h')
| -rw-r--r-- | arch/m68k/include/asm/cacheflush_no.h | 38 |
1 files changed, 34 insertions, 4 deletions
diff --git a/arch/m68k/include/asm/cacheflush_no.h b/arch/m68k/include/asm/cacheflush_no.h index f931e1829835..cb88aa96c4f1 100644 --- a/arch/m68k/include/asm/cacheflush_no.h +++ b/arch/m68k/include/asm/cacheflush_no.h @@ -12,14 +12,12 @@ #define flush_cache_dup_mm(mm) do { } while (0) #define flush_cache_range(vma, start, end) do { } while (0) #define flush_cache_page(vma, vmaddr) do { } while (0) -#ifndef flush_dcache_range -#define flush_dcache_range(start,len) __flush_cache_all() -#endif +#define flush_dcache_range(start, len) __flush_dcache_all() #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 #define flush_dcache_page(page) do { } while (0) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) -#define flush_icache_range(start,len) __flush_cache_all() +#define flush_icache_range(start, len) __flush_icache_all() #define flush_icache_page(vma,pg) do { } while (0) #define flush_icache_user_range(vma,pg,adr,len) do { } while (0) #define flush_cache_vmap(start, end) do { } while (0) @@ -46,4 +44,36 @@ static inline void __flush_cache_all(void) #endif } +/* + * Some ColdFire parts implement separate instruction and data caches, + * on those we should just flush the appropriate cache. If we don't need + * to do any specific flushing then this will be optimized away. + */ +static inline void __flush_icache_all(void) +{ +#ifdef CACHE_INVALIDATEI + __asm__ __volatile__ ( + "movel %0, %%d0\n\t" + "movec %%d0, %%CACR\n\t" + "nop\n\t" + : : "i" (CACHE_INVALIDATEI) : "d0" ); +#endif +} + +static inline void __flush_dcache_all(void) +{ +#ifdef CACHE_PUSH + mcf_cache_push(); +#endif +#ifdef CACHE_INVALIDATED + __asm__ __volatile__ ( + "movel %0, %%d0\n\t" + "movec %%d0, %%CACR\n\t" + "nop\n\t" + : : "i" (CACHE_INVALIDATED) : "d0" ); +#else + /* Flush the wrtite buffer */ + __asm__ __volatile__ ( "nop" ); +#endif +} #endif /* _M68KNOMMU_CACHEFLUSH_H */ |