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/*
* 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 */
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