This source file includes following definitions.
- flush_cache_vmap
- flush_cache_vmap
- flush_dcache_range
- clean_dcache_range
- invalidate_dcache_range
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2
3
4 #ifndef _ASM_POWERPC_CACHEFLUSH_H
5 #define _ASM_POWERPC_CACHEFLUSH_H
6
7 #ifdef __KERNEL__
8
9 #include <linux/mm.h>
10 #include <asm/cputable.h>
11
12
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14
15
16 #define flush_cache_all() do { } while (0)
17 #define flush_cache_mm(mm) do { } while (0)
18 #define flush_cache_dup_mm(mm) do { } while (0)
19 #define flush_cache_range(vma, start, end) do { } while (0)
20 #define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
21 #define flush_icache_page(vma, page) do { } while (0)
22 #define flush_cache_vunmap(start, end) do { } while (0)
23
24 #ifdef CONFIG_PPC_BOOK3S_64
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26
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30
31
32 static inline void flush_cache_vmap(unsigned long start, unsigned long end)
33 {
34 asm volatile("ptesync" ::: "memory");
35 }
36 #else
37 static inline void flush_cache_vmap(unsigned long start, unsigned long end) { }
38 #endif
39
40 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
41 extern void flush_dcache_page(struct page *page);
42 #define flush_dcache_mmap_lock(mapping) do { } while (0)
43 #define flush_dcache_mmap_unlock(mapping) do { } while (0)
44
45 void flush_icache_range(unsigned long start, unsigned long stop);
46 extern void flush_icache_user_range(struct vm_area_struct *vma,
47 struct page *page, unsigned long addr,
48 int len);
49 extern void flush_dcache_icache_page(struct page *page);
50 void __flush_dcache_icache(void *page);
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59
60 static inline void flush_dcache_range(unsigned long start, unsigned long stop)
61 {
62 unsigned long shift = l1_dcache_shift();
63 unsigned long bytes = l1_dcache_bytes();
64 void *addr = (void *)(start & ~(bytes - 1));
65 unsigned long size = stop - (unsigned long)addr + (bytes - 1);
66 unsigned long i;
67
68 if (IS_ENABLED(CONFIG_PPC64)) {
69 mb();
70 isync();
71 }
72
73 for (i = 0; i < size >> shift; i++, addr += bytes)
74 dcbf(addr);
75 mb();
76
77 if (IS_ENABLED(CONFIG_PPC64))
78 isync();
79 }
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84
85
86 static inline void clean_dcache_range(unsigned long start, unsigned long stop)
87 {
88 unsigned long shift = l1_dcache_shift();
89 unsigned long bytes = l1_dcache_bytes();
90 void *addr = (void *)(start & ~(bytes - 1));
91 unsigned long size = stop - (unsigned long)addr + (bytes - 1);
92 unsigned long i;
93
94 for (i = 0; i < size >> shift; i++, addr += bytes)
95 dcbst(addr);
96 mb();
97 }
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103
104 static inline void invalidate_dcache_range(unsigned long start,
105 unsigned long stop)
106 {
107 unsigned long shift = l1_dcache_shift();
108 unsigned long bytes = l1_dcache_bytes();
109 void *addr = (void *)(start & ~(bytes - 1));
110 unsigned long size = stop - (unsigned long)addr + (bytes - 1);
111 unsigned long i;
112
113 for (i = 0; i < size >> shift; i++, addr += bytes)
114 dcbi(addr);
115 mb();
116 }
117
118 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
119 do { \
120 memcpy(dst, src, len); \
121 flush_icache_user_range(vma, page, vaddr, len); \
122 } while (0)
123 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
124 memcpy(dst, src, len)
125
126 #endif
127
128 #endif