1#ifndef _ALPHA_CACHEFLUSH_H
2#define _ALPHA_CACHEFLUSH_H
3
4#include <linux/mm.h>
5
6
7#define flush_cache_all() do { } while (0)
8#define flush_cache_mm(mm) do { } while (0)
9#define flush_cache_dup_mm(mm) do { } while (0)
10#define flush_cache_range(vma, start, end) do { } while (0)
11#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
12#define flush_dcache_page(page) do { } while (0)
13#define flush_dcache_mmap_lock(mapping) do { } while (0)
14#define flush_dcache_mmap_unlock(mapping) do { } while (0)
15#define flush_cache_vmap(start, end) do { } while (0)
16#define flush_cache_vunmap(start, end) do { } while (0)
17
18
19
20
21
22
23
24
25
26
27
28
29
30#ifndef CONFIG_SMP
31#define flush_icache_range(start, end) imb()
32#else
33#define flush_icache_range(start, end) smp_imb()
34extern void smp_imb(void);
35#endif
36
37
38
39
40
41
42
43
44#ifndef CONFIG_SMP
45extern void __load_new_mm_context(struct mm_struct *);
46static inline void
47flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
48 unsigned long addr, int len)
49{
50 if (vma->vm_flags & VM_EXEC) {
51 struct mm_struct *mm = vma->vm_mm;
52 if (current->active_mm == mm)
53 __load_new_mm_context(mm);
54 else
55 mm->context[smp_processor_id()] = 0;
56 }
57}
58#else
59extern void flush_icache_user_range(struct vm_area_struct *vma,
60 struct page *page, unsigned long addr, int len);
61#endif
62
63
64#define flush_icache_page(vma, page) \
65 flush_icache_user_range((vma), (page), 0, 0)
66
67#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
68do { memcpy(dst, src, len); \
69 flush_icache_user_range(vma, page, vaddr, len); \
70} while (0)
71#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
72 memcpy(dst, src, len)
73
74#endif
75