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Diffstat (limited to 'arch/m68k/include/asm/cacheflush_no.h')
-rw-r--r--arch/m68k/include/asm/cacheflush_no.h38
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 f931e182983..cb88aa96c4f 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 */