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-rw-r--r--include/asm-sh/cacheflush.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/include/asm-sh/cacheflush.h b/include/asm-sh/cacheflush.h
new file mode 100644
index 0000000..9dfb33e
--- /dev/null
+++ b/include/asm-sh/cacheflush.h
@@ -0,0 +1,31 @@
+#ifndef __ASM_SH_CACHEFLUSH_H
+#define __ASM_SH_CACHEFLUSH_H
+#ifdef __KERNEL__
+
+#include <asm/cpu/cacheflush.h>
+
+/* Flush (write-back only) a region (smaller than a page) */
+extern void __flush_wback_region(void *start, int size);
+/* Flush (write-back & invalidate) a region (smaller than a page) */
+extern void __flush_purge_region(void *start, int size);
+/* Flush (invalidate only) a region (smaller than a page) */
+extern void __flush_invalidate_region(void *start, int size);
+
+#define flush_cache_vmap(start, end) flush_cache_all()
+#define flush_cache_vunmap(start, end) flush_cache_all()
+
+#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
+ do { \
+ flush_cache_page(vma, vaddr, page_to_pfn(page));\
+ memcpy(dst, src, len); \
+ flush_icache_user_range(vma, page, vaddr, len); \
+ } while (0)
+
+#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
+ do { \
+ flush_cache_page(vma, vaddr, page_to_pfn(page));\
+ memcpy(dst, src, len); \
+ } while (0)
+
+#endif /* __KERNEL__ */
+#endif /* __ASM_SH_CACHEFLUSH_H */
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