1 /* MN10300 Cache flushing
2 *
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11 #ifndef _ASM_CACHEFLUSH_H
12 #define _ASM_CACHEFLUSH_H
13
14 #ifndef __ASSEMBLY__
15
16 /* Keep includes the same across arches. */
17 #include <linux/mm.h>
18
19 /*
20 * Primitive routines
21 */
22 #ifdef CONFIG_MN10300_CACHE_ENABLED
23 extern void mn10300_local_icache_inv(void);
24 extern void mn10300_local_icache_inv_page(unsigned long start);
25 extern void mn10300_local_icache_inv_range(unsigned long start, unsigned long end);
26 extern void mn10300_local_icache_inv_range2(unsigned long start, unsigned long size);
27 extern void mn10300_local_dcache_inv(void);
28 extern void mn10300_local_dcache_inv_page(unsigned long start);
29 extern void mn10300_local_dcache_inv_range(unsigned long start, unsigned long end);
30 extern void mn10300_local_dcache_inv_range2(unsigned long start, unsigned long size);
31 extern void mn10300_icache_inv(void);
32 extern void mn10300_icache_inv_page(unsigned long start);
33 extern void mn10300_icache_inv_range(unsigned long start, unsigned long end);
34 extern void mn10300_icache_inv_range2(unsigned long start, unsigned long size);
35 extern void mn10300_dcache_inv(void);
36 extern void mn10300_dcache_inv_page(unsigned long start);
37 extern void mn10300_dcache_inv_range(unsigned long start, unsigned long end);
38 extern void mn10300_dcache_inv_range2(unsigned long start, unsigned long size);
39 #ifdef CONFIG_MN10300_CACHE_WBACK
40 extern void mn10300_local_dcache_flush(void);
41 extern void mn10300_local_dcache_flush_page(unsigned long start);
42 extern void mn10300_local_dcache_flush_range(unsigned long start, unsigned long end);
43 extern void mn10300_local_dcache_flush_range2(unsigned long start, unsigned long size);
44 extern void mn10300_local_dcache_flush_inv(void);
45 extern void mn10300_local_dcache_flush_inv_page(unsigned long start);
46 extern void mn10300_local_dcache_flush_inv_range(unsigned long start, unsigned long end);
47 extern void mn10300_local_dcache_flush_inv_range2(unsigned long start, unsigned long size);
48 extern void mn10300_dcache_flush(void);
49 extern void mn10300_dcache_flush_page(unsigned long start);
50 extern void mn10300_dcache_flush_range(unsigned long start, unsigned long end);
51 extern void mn10300_dcache_flush_range2(unsigned long start, unsigned long size);
52 extern void mn10300_dcache_flush_inv(void);
53 extern void mn10300_dcache_flush_inv_page(unsigned long start);
54 extern void mn10300_dcache_flush_inv_range(unsigned long start, unsigned long end);
55 extern void mn10300_dcache_flush_inv_range2(unsigned long start, unsigned long size);
56 #else
57 #define mn10300_local_dcache_flush() do {} while (0)
58 #define mn10300_local_dcache_flush_page(start) do {} while (0)
59 #define mn10300_local_dcache_flush_range(start, end) do {} while (0)
60 #define mn10300_local_dcache_flush_range2(start, size) do {} while (0)
61 #define mn10300_local_dcache_flush_inv() \
62 mn10300_local_dcache_inv()
63 #define mn10300_local_dcache_flush_inv_page(start) \
64 mn10300_local_dcache_inv_page(start)
65 #define mn10300_local_dcache_flush_inv_range(start, end) \
66 mn10300_local_dcache_inv_range(start, end)
67 #define mn10300_local_dcache_flush_inv_range2(start, size) \
68 mn10300_local_dcache_inv_range2(start, size)
69 #define mn10300_dcache_flush() do {} while (0)
70 #define mn10300_dcache_flush_page(start) do {} while (0)
71 #define mn10300_dcache_flush_range(start, end) do {} while (0)
72 #define mn10300_dcache_flush_range2(start, size) do {} while (0)
73 #define mn10300_dcache_flush_inv() mn10300_dcache_inv()
74 #define mn10300_dcache_flush_inv_page(start) \
75 mn10300_dcache_inv_page((start))
76 #define mn10300_dcache_flush_inv_range(start, end) \
77 mn10300_dcache_inv_range((start), (end))
78 #define mn10300_dcache_flush_inv_range2(start, size) \
79 mn10300_dcache_inv_range2((start), (size))
80 #endif /* CONFIG_MN10300_CACHE_WBACK */
81 #else
82 #define mn10300_local_icache_inv() do {} while (0)
83 #define mn10300_local_icache_inv_page(start) do {} while (0)
84 #define mn10300_local_icache_inv_range(start, end) do {} while (0)
85 #define mn10300_local_icache_inv_range2(start, size) do {} while (0)
86 #define mn10300_local_dcache_inv() do {} while (0)
87 #define mn10300_local_dcache_inv_page(start) do {} while (0)
88 #define mn10300_local_dcache_inv_range(start, end) do {} while (0)
89 #define mn10300_local_dcache_inv_range2(start, size) do {} while (0)
90 #define mn10300_local_dcache_flush() do {} while (0)
91 #define mn10300_local_dcache_flush_inv_page(start) do {} while (0)
92 #define mn10300_local_dcache_flush_inv() do {} while (0)
93 #define mn10300_local_dcache_flush_inv_range(start, end)do {} while (0)
94 #define mn10300_local_dcache_flush_inv_range2(start, size) do {} while (0)
95 #define mn10300_local_dcache_flush_page(start) do {} while (0)
96 #define mn10300_local_dcache_flush_range(start, end) do {} while (0)
97 #define mn10300_local_dcache_flush_range2(start, size) do {} while (0)
98 #define mn10300_icache_inv() do {} while (0)
99 #define mn10300_icache_inv_page(start) do {} while (0)
100 #define mn10300_icache_inv_range(start, end) do {} while (0)
101 #define mn10300_icache_inv_range2(start, size) do {} while (0)
102 #define mn10300_dcache_inv() do {} while (0)
103 #define mn10300_dcache_inv_page(start) do {} while (0)
104 #define mn10300_dcache_inv_range(start, end) do {} while (0)
105 #define mn10300_dcache_inv_range2(start, size) do {} while (0)
106 #define mn10300_dcache_flush() do {} while (0)
107 #define mn10300_dcache_flush_inv_page(start) do {} while (0)
108 #define mn10300_dcache_flush_inv() do {} while (0)
109 #define mn10300_dcache_flush_inv_range(start, end) do {} while (0)
110 #define mn10300_dcache_flush_inv_range2(start, size) do {} while (0)
111 #define mn10300_dcache_flush_page(start) do {} while (0)
112 #define mn10300_dcache_flush_range(start, end) do {} while (0)
113 #define mn10300_dcache_flush_range2(start, size) do {} while (0)
114 #endif /* CONFIG_MN10300_CACHE_ENABLED */
115
116 /*
117 * Virtually-indexed cache management (our cache is physically indexed)
118 */
119 #define flush_cache_all() do {} while (0)
120 #define flush_cache_mm(mm) do {} while (0)
121 #define flush_cache_dup_mm(mm) do {} while (0)
122 #define flush_cache_range(mm, start, end) do {} while (0)
123 #define flush_cache_page(vma, vmaddr, pfn) do {} while (0)
124 #define flush_cache_vmap(start, end) do {} while (0)
125 #define flush_cache_vunmap(start, end) do {} while (0)
126 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
127 #define flush_dcache_page(page) do {} while (0)
128 #define flush_dcache_mmap_lock(mapping) do {} while (0)
129 #define flush_dcache_mmap_unlock(mapping) do {} while (0)
130
131 /*
132 * Physically-indexed cache management
133 */
134 #if defined(CONFIG_MN10300_CACHE_FLUSH_ICACHE)
135 extern void flush_icache_page(struct vm_area_struct *vma, struct page *page);
136 extern void flush_icache_range(unsigned long start, unsigned long end);
137 #elif defined(CONFIG_MN10300_CACHE_INV_ICACHE)
138 static inline void flush_icache_page(struct vm_area_struct *vma,
139 struct page *page)
140 {
141 mn10300_icache_inv_page(page_to_phys(page));
142 }
143 extern void flush_icache_range(unsigned long start, unsigned long end);
144 #else
145 #define flush_icache_range(start, end) do {} while (0)
146 #define flush_icache_page(vma, pg) do {} while (0)
147 #endif
148
149
150 #define flush_icache_user_range(vma, pg, adr, len) \
151 flush_icache_range(adr, adr + len)
152
153 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
154 do { \
155 memcpy(dst, src, len); \
156 flush_icache_page(vma, page); \
157 } while (0)
158
159 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
160 memcpy(dst, src, len)
161
162 #endif /* __ASSEMBLY__ */
163
164 #endif /* _ASM_CACHEFLUSH_H */
165
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