[PATCH] Configurable NODES_SHIFT
[linux-2.6] / include / asm-ia64 / cacheflush.h
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 */