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9#ifndef _XTENSA_CACHEFLUSH_H
10#define _XTENSA_CACHEFLUSH_H
11
12#include <linux/mm.h>
13#include <asm/processor.h>
14#include <asm/page.h>
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44extern void __invalidate_dcache_all(void);
45extern void __invalidate_icache_all(void);
46extern void __invalidate_dcache_page(unsigned long);
47extern void __invalidate_icache_page(unsigned long);
48extern void __invalidate_icache_range(unsigned long, unsigned long);
49extern void __invalidate_dcache_range(unsigned long, unsigned long);
50
51#if XCHAL_DCACHE_IS_WRITEBACK
52extern void __flush_invalidate_dcache_all(void);
53extern void __flush_dcache_page(unsigned long);
54extern void __flush_dcache_range(unsigned long, unsigned long);
55extern void __flush_invalidate_dcache_page(unsigned long);
56extern void __flush_invalidate_dcache_range(unsigned long, unsigned long);
57#else
58static inline void __flush_dcache_page(unsigned long va)
59{
60}
61static inline void __flush_dcache_range(unsigned long va, unsigned long sz)
62{
63}
64# define __flush_invalidate_dcache_all() __invalidate_dcache_all()
65# define __flush_invalidate_dcache_page(p) __invalidate_dcache_page(p)
66# define __flush_invalidate_dcache_range(p,s) __invalidate_dcache_range(p,s)
67#endif
68
69#if defined(CONFIG_MMU) && (DCACHE_WAY_SIZE > PAGE_SIZE)
70extern void __flush_invalidate_dcache_page_alias(unsigned long, unsigned long);
71extern void __invalidate_dcache_page_alias(unsigned long, unsigned long);
72#else
73static inline void __flush_invalidate_dcache_page_alias(unsigned long virt,
74 unsigned long phys) { }
75static inline void __invalidate_dcache_page_alias(unsigned long virt,
76 unsigned long phys) { }
77#endif
78#if defined(CONFIG_MMU) && (ICACHE_WAY_SIZE > PAGE_SIZE)
79extern void __invalidate_icache_page_alias(unsigned long, unsigned long);
80#else
81static inline void __invalidate_icache_page_alias(unsigned long virt,
82 unsigned long phys) { }
83#endif
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93
94#if defined(CONFIG_MMU) && \
95 ((DCACHE_WAY_SIZE > PAGE_SIZE) || defined(CONFIG_SMP))
96
97#ifdef CONFIG_SMP
98void flush_cache_all(void);
99void flush_cache_range(struct vm_area_struct*, ulong, ulong);
100void flush_icache_range(unsigned long start, unsigned long end);
101void flush_cache_page(struct vm_area_struct*,
102 unsigned long, unsigned long);
103#else
104#define flush_cache_all local_flush_cache_all
105#define flush_cache_range local_flush_cache_range
106#define flush_icache_range local_flush_icache_range
107#define flush_cache_page local_flush_cache_page
108#endif
109
110#define local_flush_cache_all() \
111 do { \
112 __flush_invalidate_dcache_all(); \
113 __invalidate_icache_all(); \
114 } while (0)
115
116#define flush_cache_mm(mm) flush_cache_all()
117#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
118
119#define flush_cache_vmap(start,end) flush_cache_all()
120#define flush_cache_vunmap(start,end) flush_cache_all()
121
122#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
123extern void flush_dcache_page(struct page*);
124
125void local_flush_cache_range(struct vm_area_struct *vma,
126 unsigned long start, unsigned long end);
127void local_flush_cache_page(struct vm_area_struct *vma,
128 unsigned long address, unsigned long pfn);
129
130#else
131
132#define flush_cache_all() do { } while (0)
133#define flush_cache_mm(mm) do { } while (0)
134#define flush_cache_dup_mm(mm) do { } while (0)
135
136#define flush_cache_vmap(start,end) do { } while (0)
137#define flush_cache_vunmap(start,end) do { } while (0)
138
139#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
140#define flush_dcache_page(page) do { } while (0)
141
142#define flush_icache_range local_flush_icache_range
143#define flush_cache_page(vma, addr, pfn) do { } while (0)
144#define flush_cache_range(vma, start, end) do { } while (0)
145
146#endif
147
148
149#define local_flush_icache_range(start, end) \
150 do { \
151 __flush_dcache_range(start, (end) - (start)); \
152 __invalidate_icache_range(start,(end) - (start)); \
153 } while (0)
154
155
156#define flush_icache_page(vma,page) do { } while (0)
157
158#define flush_dcache_mmap_lock(mapping) do { } while (0)
159#define flush_dcache_mmap_unlock(mapping) do { } while (0)
160
161#if defined(CONFIG_MMU) && (DCACHE_WAY_SIZE > PAGE_SIZE)
162
163extern void copy_to_user_page(struct vm_area_struct*, struct page*,
164 unsigned long, void*, const void*, unsigned long);
165extern void copy_from_user_page(struct vm_area_struct*, struct page*,
166 unsigned long, void*, const void*, unsigned long);
167
168#else
169
170#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
171 do { \
172 memcpy(dst, src, len); \
173 __flush_dcache_range((unsigned long) dst, len); \
174 __invalidate_icache_range((unsigned long) dst, len); \
175 } while (0)
176
177#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
178 memcpy(dst, src, len)
179
180#endif
181
182#endif
183