2 * include/asm-sh/cpu-sh4/cacheflush.h
4 * Copyright (C) 1999 Niibe Yutaka
5 * Copyright (C) 2003 Paul Mundt
7 * This file is subject to the terms and conditions of the GNU General Public
8 * License. See the file "COPYING" in the main directory of this archive
11 #ifndef __ASM_CPU_SH4_CACHEFLUSH_H
12 #define __ASM_CPU_SH4_CACHEFLUSH_H
15 * Caches are broken on SH-4 (unless we use write-through
16 * caching; in which case they're only semi-broken),
21 struct vm_area_struct;
23 extern void flush_cache_all(void);
24 extern void flush_cache_mm(struct mm_struct *mm);
25 extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
27 extern void flush_cache_page(struct vm_area_struct *vma, unsigned long addr, unsigned long pfn);
28 extern void flush_dcache_page(struct page *pg);
30 #define flush_dcache_mmap_lock(mapping) do { } while (0)
31 #define flush_dcache_mmap_unlock(mapping) do { } while (0)
33 extern void flush_icache_range(unsigned long start, unsigned long end);
34 extern void flush_cache_sigtramp(unsigned long addr);
35 extern void flush_icache_user_range(struct vm_area_struct *vma,
36 struct page *page, unsigned long addr,
39 #define flush_icache_page(vma,pg) do { } while (0)
41 /* Initialization of P3 area for copy_user_page */
42 extern void p3_cache_init(void);
44 #define PG_mapped PG_arch_1
46 /* We provide our own get_unmapped_area to avoid cache alias issue */
47 #define HAVE_ARCH_UNMAPPED_AREA
50 extern int remap_area_pages(unsigned long addr, unsigned long phys_addr,
51 unsigned long size, unsigned long flags);
52 #else /* CONFIG_MMU */
53 static inline int remap_area_pages(unsigned long addr, unsigned long phys_addr,
54 unsigned long size, unsigned long flags)
58 #endif /* CONFIG_MMU */
59 #endif /* __ASM_CPU_SH4_CACHEFLUSH_H */