diff options
Diffstat (limited to 'include/asm-ia64/cacheflush.h')
-rw-r--r-- | include/asm-ia64/cacheflush.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/include/asm-ia64/cacheflush.h b/include/asm-ia64/cacheflush.h new file mode 100644 index 000000000000..f2dacb4245ec --- /dev/null +++ b/include/asm-ia64/cacheflush.h | |||
@@ -0,0 +1,50 @@ | |||
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 */ | ||