1 files changed, 64 insertions, 0 deletions

diff --git a/include/asm-sh/cpu-sh4/cacheflush.h b/include/asm-sh/cpu-sh4/cacheflush.h
new file mode 100644
index 000000000000..f323567e085f
--- /dev/null
+++ b/include/asm-sh/cpu-sh4/cacheflush.h
@@ -0,0 +1,64 @@
+/*
+ * include/asm-sh/cpu-sh4/cacheflush.h
+ *
+ * Copyright (C) 1999 Niibe Yutaka
+ * Copyright (C) 2003 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#ifndef __ASM_CPU_SH4_CACHEFLUSH_H
+#define __ASM_CPU_SH4_CACHEFLUSH_H
+
+/*
+ *  Caches are broken on SH-4 (unless we use write-through
+ *  caching; in which case they're only semi-broken),
+ *  so we need them.
+ */
+
+/* Page is 4K, OC size is 16K, there are four lines. */
+#define CACHE_ALIAS 0x00003000
+
+struct page;
+struct mm_struct;
+struct vm_area_struct;
+
+extern void flush_cache_all(void);
+extern void flush_cache_mm(struct mm_struct *mm);
+extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
+                              unsigned long end);
+extern void flush_cache_page(struct vm_area_struct *vma, unsigned long addr, unsigned long pfn);
+extern void flush_dcache_page(struct page *pg);
+
+#define flush_dcache_mmap_lock(mapping)         do { } while (0)
+#define flush_dcache_mmap_unlock(mapping)       do { } while (0)
+
+extern void flush_icache_range(unsigned long start, unsigned long end);
+extern void flush_cache_sigtramp(unsigned long addr);
+extern void flush_icache_user_range(struct vm_area_struct *vma,
+                                    struct page *page, unsigned long addr,
+                                    int len);
+
+#define flush_icache_page(vma,pg)               do { } while (0)
+
+/* Initialization of P3 area for copy_user_page */
+extern void p3_cache_init(void);
+
+#define PG_mapped       PG_arch_1
+
+/* We provide our own get_unmapped_area to avoid cache alias issue */
+#define HAVE_ARCH_UNMAPPED_AREA
+
+#ifdef CONFIG_MMU
+extern int remap_area_pages(unsigned long addr, unsigned long phys_addr,
+                            unsigned long size, unsigned long flags);
+#else /* CONFIG_MMU */
+static inline int remap_area_pages(unsigned long addr, unsigned long phys_addr,
+                                   unsigned long size, unsigned long flags)
+{
+        return 0;
+}
+#endif /* CONFIG_MMU */
+#endif /* __ASM_CPU_SH4_CACHEFLUSH_H */
+