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15#ifndef _ASM_CACHEFLUSH_H
16#define _ASM_CACHEFLUSH_H
17
18#include <linux/mm.h>
19#include <asm/shmparam.h>
20
21
22
23
24
25
26
27#define flush_icache_page(vma, page)
28
29void flush_cache_all(void);
30
31void flush_icache_range(unsigned long kstart, unsigned long kend);
32void __sync_icache_dcache(phys_addr_t paddr, unsigned long vaddr, int len);
33void __inv_icache_page(phys_addr_t paddr, unsigned long vaddr);
34void __flush_dcache_page(phys_addr_t paddr, unsigned long vaddr);
35
36#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
37
38void flush_dcache_page(struct page *page);
39
40void dma_cache_wback_inv(phys_addr_t start, unsigned long sz);
41void dma_cache_inv(phys_addr_t start, unsigned long sz);
42void dma_cache_wback(phys_addr_t start, unsigned long sz);
43
44#define flush_dcache_mmap_lock(mapping) do { } while (0)
45#define flush_dcache_mmap_unlock(mapping) do { } while (0)
46
47
48#define flush_cache_vmap(start, end) flush_cache_all()
49#define flush_cache_vunmap(start, end) flush_cache_all()
50
51#define flush_cache_dup_mm(mm)
52
53#ifndef CONFIG_ARC_CACHE_VIPT_ALIASING
54
55#define flush_cache_mm(mm)
56#define flush_cache_range(mm, u_vstart, u_vend)
57#define flush_cache_page(vma, u_vaddr, pfn)
58
59#else
60
61
62void flush_cache_mm(struct mm_struct *mm);
63void flush_cache_range(struct vm_area_struct *vma,
64 unsigned long start,unsigned long end);
65void flush_cache_page(struct vm_area_struct *vma,
66 unsigned long user_addr, unsigned long page);
67
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70
71
72#define ARCH_HAS_FLUSH_ANON_PAGE
73void flush_anon_page(struct vm_area_struct *vma,
74 struct page *page, unsigned long u_vaddr);
75
76#endif
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81
82
83#define PG_dc_clean PG_arch_1
84
85#define CACHE_COLORS_NUM 4
86#define CACHE_COLORS_MSK (CACHE_COLORS_NUM - 1)
87#define CACHE_COLOR(addr) (((unsigned long)(addr) >> (PAGE_SHIFT)) & CACHE_COLORS_MSK)
88
89
90
91
92
93static inline int cache_is_vipt_aliasing(void)
94{
95 return IS_ENABLED(CONFIG_ARC_CACHE_VIPT_ALIASING);
96}
97
98
99
100
101#define addr_not_cache_congruent(addr1, addr2) \
102({ \
103 cache_is_vipt_aliasing() ? \
104 (CACHE_COLOR(addr1) != CACHE_COLOR(addr2)) : 0; \
105})
106
107#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
108do { \
109 memcpy(dst, src, len); \
110 if (vma->vm_flags & VM_EXEC) \
111 __sync_icache_dcache((unsigned long)(dst), vaddr, len); \
112} while (0)
113
114#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
115 memcpy(dst, src, len); \
116
117#endif
118