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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - include/asm-mips/cacheflush.h
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 1994, 95, 96, 97, 98, 99, 2000, 01, 02, 03 by Ralf Baechle
7 * Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc.
9 #ifndef _ASM_CACHEFLUSH_H
10 #define _ASM_CACHEFLUSH_H
12 /* Keep includes the same across arches. */
14 #include <asm/cpu-features.h>
18 * - flush_cache_all() flushes entire cache
19 * - flush_cache_mm(mm) flushes the specified mm context's cache lines
20 * - flush_cache_page(mm, vmaddr, pfn) flushes a single page
21 * - flush_cache_range(vma, start, end) flushes a range of pages
22 * - flush_icache_range(start, end) flush a range of instructions
23 * - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
24 * - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
26 * MIPS specific flush operations:
28 * - flush_cache_sigtramp() flush signal trampoline
29 * - flush_icache_all() flush the entire instruction cache
30 * - flush_data_cache_page() flushes a page from the data cache
32 extern void (*flush_cache_all
)(void);
33 extern void (*__flush_cache_all
)(void);
34 extern void (*flush_cache_mm
)(struct mm_struct
*mm
);
35 extern void (*flush_cache_range
)(struct vm_area_struct
*vma
,
36 unsigned long start
, unsigned long end
);
37 extern void (*flush_cache_page
)(struct vm_area_struct
*vma
, unsigned long page
, unsigned long pfn
);
38 extern void __flush_dcache_page(struct page
*page
);
40 static inline void flush_dcache_page(struct page
*page
)
42 if (cpu_has_dc_aliases
)
43 __flush_dcache_page(page
);
47 #define flush_dcache_mmap_lock(mapping) do { } while (0)
48 #define flush_dcache_mmap_unlock(mapping) do { } while (0)
50 extern void (*flush_icache_page
)(struct vm_area_struct
*vma
,
52 extern void (*flush_icache_range
)(unsigned long start
, unsigned long end
);
53 #define flush_cache_vmap(start, end) flush_cache_all()
54 #define flush_cache_vunmap(start, end) flush_cache_all()
56 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
58 memcpy(dst, (void *) src, len); \
59 flush_icache_page(vma, page); \
61 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
64 extern void (*flush_cache_sigtramp
)(unsigned long addr
);
65 extern void (*flush_icache_all
)(void);
66 extern void (*flush_data_cache_page
)(unsigned long addr
);
69 * This flag is used to indicate that the page pointed to by a pte
70 * is dirty and requires cleaning before returning it to the user.
72 #define PG_dcache_dirty PG_arch_1
74 #define Page_dcache_dirty(page) \
75 test_bit(PG_dcache_dirty, &(page)->flags)
76 #define SetPageDcacheDirty(page) \
77 set_bit(PG_dcache_dirty, &(page)->flags)
78 #define ClearPageDcacheDirty(page) \
79 clear_bit(PG_dcache_dirty, &(page)->flags)
81 #endif /* _ASM_CACHEFLUSH_H */