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1da177e4 LT |
1 | #ifndef _ASM_IA64_CACHEFLUSH_H |
2 | #define _ASM_IA64_CACHEFLUSH_H | |
3 | ||
4 | /* | |
5 | * Copyright (C) 2002 Hewlett-Packard Co | |
6 | * David Mosberger-Tang <davidm@hpl.hp.com> | |
7 | */ | |
8 | ||
9 | #include <linux/page-flags.h> | |
10 | ||
11 | #include <asm/bitops.h> | |
12 | #include <asm/page.h> | |
13 | ||
14 | /* | |
15 | * Cache flushing routines. This is the kind of stuff that can be very expensive, so try | |
16 | * to avoid them whenever possible. | |
17 | */ | |
18 | ||
19 | #define flush_cache_all() do { } while (0) | |
20 | #define flush_cache_mm(mm) do { } while (0) | |
21 | #define flush_cache_range(vma, start, end) do { } while (0) | |
22 | #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) | |
23 | #define flush_icache_page(vma,page) do { } while (0) | |
24 | #define flush_cache_vmap(start, end) do { } while (0) | |
25 | #define flush_cache_vunmap(start, end) do { } while (0) | |
26 | ||
27 | #define flush_dcache_page(page) \ | |
28 | do { \ | |
29 | clear_bit(PG_arch_1, &(page)->flags); \ | |
30 | } while (0) | |
31 | ||
32 | #define flush_dcache_mmap_lock(mapping) do { } while (0) | |
33 | #define flush_dcache_mmap_unlock(mapping) do { } while (0) | |
34 | ||
35 | extern void flush_icache_range (unsigned long start, unsigned long end); | |
36 | ||
37 | #define flush_icache_user_range(vma, page, user_addr, len) \ | |
38 | do { \ | |
39 | unsigned long _addr = (unsigned long) page_address(page) + ((user_addr) & ~PAGE_MASK); \ | |
40 | flush_icache_range(_addr, _addr + (len)); \ | |
41 | } while (0) | |
42 | ||
43 | #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ | |
44 | do { memcpy(dst, src, len); \ | |
45 | flush_icache_user_range(vma, page, vaddr, len); \ | |
46 | } while (0) | |
47 | #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ | |
48 | memcpy(dst, src, len) | |
49 | ||
50 | #endif /* _ASM_IA64_CACHEFLUSH_H */ |