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_dup_mm(mm)			((void)0)
28#define flush_cache_range(vma, start, end)	((void)0)
29#define flush_cache_page(vma, vmaddr, pfn)	((void)0)
30#define flush_dcache_page(page)			((void)0)
31#define flush_dcache_mmap_lock(mapping)		((void)0)
32#define flush_dcache_mmap_unlock(mapping)	((void)0)
33#define flush_cache_vmap(start, end)		((void)0)
34#define flush_cache_vunmap(start, end)		((void)0)
35
36#ifdef CONFIG_NO_CACHE
37
38/* Some systems have no cache at all, in which case we don't need these
39   either.  */
40#define flush_icache()				((void)0)
41#define flush_icache_range(start, end)		((void)0)
42#define flush_icache_page(vma,pg)		((void)0)
43#define flush_icache_user_range(vma,pg,adr,len)	((void)0)
44#define flush_cache_sigtramp(vaddr)		((void)0)
45
46#else /* !CONFIG_NO_CACHE */
47
48struct page;
49struct mm_struct;
50struct vm_area_struct;
51
52/* Otherwise, somebody had better define them.  */
53extern void flush_icache (void);
54extern void flush_icache_range (unsigned long start, unsigned long end);
55extern void flush_icache_page (struct vm_area_struct *vma, struct page *page);
56extern void flush_icache_user_range (struct vm_area_struct *vma,
57				     struct page *page,
58				     unsigned long adr, int len);
59extern void flush_cache_sigtramp (unsigned long addr);
60
61#endif /* CONFIG_NO_CACHE */
62
63#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
64do { memcpy(dst, src, len); \
65     flush_icache_user_range(vma, page, vaddr, len); \
66} while (0)
67#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
68	memcpy(dst, src, len)
69
70#endif /* __V850_CACHEFLUSH_H__ */
71