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7#ifndef _ASM_POWERPC_CACHEFLUSH_H
8#define _ASM_POWERPC_CACHEFLUSH_H
9
10#ifdef __KERNEL__
11
12#include <linux/mm.h>
13#include <asm/cputable.h>
14#include <asm/cpu_has_feature.h>
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17
18
19
20#define flush_cache_all() do { } while (0)
21#define flush_cache_mm(mm) do { } while (0)
22#define flush_cache_dup_mm(mm) do { } while (0)
23#define flush_cache_range(vma, start, end) do { } while (0)
24#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
25#define flush_icache_page(vma, page) do { } while (0)
26#define flush_cache_vmap(start, end) do { } while (0)
27#define flush_cache_vunmap(start, end) do { } while (0)
28
29#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
30extern void flush_dcache_page(struct page *page);
31#define flush_dcache_mmap_lock(mapping) do { } while (0)
32#define flush_dcache_mmap_unlock(mapping) do { } while (0)
33
34extern void flush_icache_range(unsigned long, unsigned long);
35extern void flush_icache_user_range(struct vm_area_struct *vma,
36 struct page *page, unsigned long addr,
37 int len);
38extern void __flush_dcache_icache(void *page_va);
39extern void flush_dcache_icache_page(struct page *page);
40#if defined(CONFIG_PPC32) && !defined(CONFIG_BOOKE)
41extern void __flush_dcache_icache_phys(unsigned long physaddr);
42#else
43static inline void __flush_dcache_icache_phys(unsigned long physaddr)
44{
45 BUG();
46}
47#endif
48
49#ifdef CONFIG_PPC32
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53
54static inline void flush_dcache_range(unsigned long start, unsigned long stop)
55{
56 void *addr = (void *)(start & ~(L1_CACHE_BYTES - 1));
57 unsigned long size = stop - (unsigned long)addr + (L1_CACHE_BYTES - 1);
58 unsigned long i;
59
60 for (i = 0; i < size >> L1_CACHE_SHIFT; i++, addr += L1_CACHE_BYTES)
61 dcbf(addr);
62 mb();
63}
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69
70static inline void clean_dcache_range(unsigned long start, unsigned long stop)
71{
72 void *addr = (void *)(start & ~(L1_CACHE_BYTES - 1));
73 unsigned long size = stop - (unsigned long)addr + (L1_CACHE_BYTES - 1);
74 unsigned long i;
75
76 for (i = 0; i < size >> L1_CACHE_SHIFT; i++, addr += L1_CACHE_BYTES)
77 dcbst(addr);
78 mb();
79}
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85
86static inline void invalidate_dcache_range(unsigned long start,
87 unsigned long stop)
88{
89 void *addr = (void *)(start & ~(L1_CACHE_BYTES - 1));
90 unsigned long size = stop - (unsigned long)addr + (L1_CACHE_BYTES - 1);
91 unsigned long i;
92
93 for (i = 0; i < size >> L1_CACHE_SHIFT; i++, addr += L1_CACHE_BYTES)
94 dcbi(addr);
95 mb();
96}
97
98#endif
99#ifdef CONFIG_PPC64
100extern void flush_dcache_range(unsigned long start, unsigned long stop);
101extern void flush_inval_dcache_range(unsigned long start, unsigned long stop);
102extern void flush_dcache_phys_range(unsigned long start, unsigned long stop);
103#endif
104
105#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
106 do { \
107 memcpy(dst, src, len); \
108 flush_icache_user_range(vma, page, vaddr, len); \
109 } while (0)
110#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
111 memcpy(dst, src, len)
112
113#endif
114
115#endif
116