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18#ifndef _ASM_CACHEFLUSH_H
19#define _ASM_CACHEFLUSH_H
20
21#include <linux/mm.h>
22#include <asm/shmparam.h>
23
24
25
26
27
28
29
30#define flush_icache_page(vma, page)
31
32void flush_cache_all(void);
33
34void flush_icache_range(unsigned long start, unsigned long end);
35void __sync_icache_dcache(unsigned long paddr, unsigned long vaddr, int len);
36void __inv_icache_page(unsigned long paddr, unsigned long vaddr);
37void ___flush_dcache_page(unsigned long paddr, unsigned long vaddr);
38#define __flush_dcache_page(p, v) \
39 ___flush_dcache_page((unsigned long)p, (unsigned long)v)
40
41#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
42
43void flush_dcache_page(struct page *page);
44
45void dma_cache_wback_inv(unsigned long start, unsigned long sz);
46void dma_cache_inv(unsigned long start, unsigned long sz);
47void dma_cache_wback(unsigned long start, unsigned long sz);
48
49#define flush_dcache_mmap_lock(mapping) do { } while (0)
50#define flush_dcache_mmap_unlock(mapping) do { } while (0)
51
52
53#define flush_cache_vmap(start, end) flush_cache_all()
54#define flush_cache_vunmap(start, end) flush_cache_all()
55
56#define flush_cache_dup_mm(mm)
57
58#ifndef CONFIG_ARC_CACHE_VIPT_ALIASING
59
60#define flush_cache_mm(mm)
61#define flush_cache_range(mm, u_vstart, u_vend)
62#define flush_cache_page(vma, u_vaddr, pfn)
63
64#else
65
66
67void flush_cache_mm(struct mm_struct *mm);
68void flush_cache_range(struct vm_area_struct *vma,
69 unsigned long start,unsigned long end);
70void flush_cache_page(struct vm_area_struct *vma,
71 unsigned long user_addr, unsigned long page);
72
73
74
75
76
77#define ARCH_HAS_FLUSH_ANON_PAGE
78void flush_anon_page(struct vm_area_struct *vma,
79 struct page *page, unsigned long u_vaddr);
80
81#endif
82
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84
85
86
87
88#define PG_dc_clean PG_arch_1
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92
93
94static inline int cache_is_vipt_aliasing(void)
95{
96 return IS_ENABLED(CONFIG_ARC_CACHE_VIPT_ALIASING);
97}
98
99#define CACHE_COLOR(addr) (((unsigned long)(addr) >> (PAGE_SHIFT)) & 1)
100
101
102
103
104#define addr_not_cache_congruent(addr1, addr2) \
105({ \
106 cache_is_vipt_aliasing() ? \
107 (CACHE_COLOR(addr1) != CACHE_COLOR(addr2)) : 0; \
108})
109
110#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
111do { \
112 memcpy(dst, src, len); \
113 if (vma->vm_flags & VM_EXEC) \
114 __sync_icache_dcache((unsigned long)(dst), vaddr, len); \
115} while (0)
116
117#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
118 memcpy(dst, src, len); \
119
120#endif
121