| #ifndef _M68KNOMMU_CACHEFLUSH_H |
| #define _M68KNOMMU_CACHEFLUSH_H |
| |
| /* |
| * (C) Copyright 2000-2010, Greg Ungerer <gerg@snapgear.com> |
| */ |
| #include <linux/mm.h> |
| #include <asm/mcfsim.h> |
| |
| #define flush_cache_all() __flush_cache_all() |
| #define flush_cache_mm(mm) do { } while (0) |
| #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) |
| #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_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) |
| #define flush_cache_vunmap(start, end) do { } while (0) |
| |
| #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ |
| memcpy(dst, src, len) |
| #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ |
| memcpy(dst, src, len) |
| |
| void mcf_cache_push(void); |
| |
| static inline void __clear_cache_all(void) |
| { |
| #ifdef CACHE_INVALIDATE |
| __asm__ __volatile__ ( |
| "movel %0, %%d0\n\t" |
| "movec %%d0, %%CACR\n\t" |
| "nop\n\t" |
| : : "i" (CACHE_INVALIDATE) : "d0" ); |
| #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 |
| * 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 |
| } |
| |
| /* |
| * 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 */ |