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/*
* include/asm-v850/cacheflush.h
*
* Copyright (C) 2001,02,03 NEC Electronics Corporation
* Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org>
*
* 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.
*
* Written by Miles Bader <miles@gnu.org>
*/
#ifndef __V850_CACHEFLUSH_H__
#define __V850_CACHEFLUSH_H__
/* Somebody depends on this; sigh... */
#include <linux/mm.h>
#include <asm/machdep.h>
/* The following are all used by the kernel in ways that only affect
systems with MMUs, so we don't need them. */
#define flush_cache_all() ((void)0)
#define flush_cache_mm(mm) ((void)0)
#define flush_cache_range(vma, start, end) ((void)0)
#define flush_cache_page(vma, vmaddr, pfn) ((void)0)
#define flush_dcache_page(page) ((void)0)
#define flush_dcache_mmap_lock(mapping) ((void)0)
#define flush_dcache_mmap_unlock(mapping) ((void)0)
#define flush_cache_vmap(start, end) ((void)0)
#define flush_cache_vunmap(start, end) ((void)0)
#ifdef CONFIG_NO_CACHE
/* Some systems have no cache at all, in which case we don't need these
either. */
#define flush_icache() ((void)0)
#define flush_icache_range(start, end) ((void)0)
#define flush_icache_page(vma,pg) ((void)0)
#define flush_icache_user_range(vma,pg,adr,len) ((void)0)
#define flush_cache_sigtramp(vaddr) ((void)0)
#else /* !CONFIG_NO_CACHE */
struct page;
struct mm_struct;
struct vm_area_struct;
/* Otherwise, somebody had better define them. */
extern void flush_icache (void);
extern void flush_icache_range (unsigned long start, unsigned long end);
extern void flush_icache_page (struct vm_area_struct *vma, struct page *page);
extern void flush_icache_user_range (struct vm_area_struct *vma,
struct page *page,
unsigned long adr, int len);
extern void flush_cache_sigtramp (unsigned long addr);
#endif /* CONFIG_NO_CACHE */
#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
do { 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) \
memcpy(dst, src, len)
#endif /* __V850_CACHEFLUSH_H__ */
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