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