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1/*
2 * include/asm-v850/cacheflush.h
3 *
4 * Copyright (C) 2001,02,03 NEC Electronics Corporation
5 * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org>
6 *
7 * This file is subject to the terms and conditions of the GNU General
8 * Public License. See the file COPYING in the main directory of this
9 * archive for more details.
10 *
11 * Written by Miles Bader <miles@gnu.org>
12 */
13
14#ifndef __V850_CACHEFLUSH_H__
15#define __V850_CACHEFLUSH_H__
16
17/* Somebody depends on this; sigh... */
18#include <linux/mm.h>
19
20#include <asm/machdep.h>
21
22
23/* The following are all used by the kernel in ways that only affect
24 systems with MMUs, so we don't need them. */
25#define flush_cache_all() ((void)0)
26#define flush_cache_mm(mm) ((void)0)
27#define flush_cache_range(vma, start, end) ((void)0)
28#define flush_cache_page(vma, vmaddr, pfn) ((void)0)
29#define flush_dcache_page(page) ((void)0)
30#define flush_dcache_mmap_lock(mapping) ((void)0)
31#define flush_dcache_mmap_unlock(mapping) ((void)0)
32#define flush_cache_vmap(start, end) ((void)0)
33#define flush_cache_vunmap(start, end) ((void)0)
34
35#ifdef CONFIG_NO_CACHE
36
37/* Some systems have no cache at all, in which case we don't need these
38 either. */
39#define flush_icache() ((void)0)
40#define flush_icache_range(start, end) ((void)0)
41#define flush_icache_page(vma,pg) ((void)0)
42#define flush_icache_user_range(vma,pg,adr,len) ((void)0)
43#define flush_cache_sigtramp(vaddr) ((void)0)
44
45#else /* !CONFIG_NO_CACHE */
46
47struct page;
48struct mm_struct;
49struct vm_area_struct;
50
51/* Otherwise, somebody had better define them. */
52extern void flush_icache (void);
53extern void flush_icache_range (unsigned long start, unsigned long end);
54extern void flush_icache_page (struct vm_area_struct *vma, struct page *page);
55extern void flush_icache_user_range (struct vm_area_struct *vma,
56 struct page *page,
57 unsigned long adr, int len);
58extern void flush_cache_sigtramp (unsigned long addr);
59
60#endif /* CONFIG_NO_CACHE */
61
62#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
63do { memcpy(dst, src, len); \
64 flush_icache_user_range(vma, page, vaddr, len); \
65} while (0)
66#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
67 memcpy(dst, src, len)
68
69#endif /* __V850_CACHEFLUSH_H__ */