Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/*
2 * include/asm-ppc/cacheflush.h
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 */
9#ifdef __KERNEL__
10#ifndef _PPC_CACHEFLUSH_H
11#define _PPC_CACHEFLUSH_H
12
13#include <linux/mm.h>
14
15/*
16 * No cache flushing is required when address mappings are
17 * changed, because the caches on PowerPCs are physically
18 * addressed. -- paulus
19 * Also, when SMP we use the coherency (M) bit of the
20 * BATs and PTEs. -- Cort
21 */
22#define flush_cache_all() do { } while (0)
23#define flush_cache_mm(mm) do { } while (0)
24#define flush_cache_range(vma, a, b) do { } while (0)
25#define flush_cache_page(vma, p, pfn) do { } while (0)
26#define flush_icache_page(vma, page) do { } while (0)
27#define flush_cache_vmap(start, end) do { } while (0)
28#define flush_cache_vunmap(start, end) do { } while (0)
29
30extern void flush_dcache_page(struct page *page);
31#define flush_dcache_mmap_lock(mapping) do { } while (0)
32#define flush_dcache_mmap_unlock(mapping) do { } while (0)
33
34extern void flush_icache_range(unsigned long, unsigned long);
35extern void flush_icache_user_range(struct vm_area_struct *vma,
36 struct page *page, unsigned long addr, int len);
37
38#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
39do { memcpy(dst, src, len); \
40 flush_icache_user_range(vma, page, vaddr, len); \
41} while (0)
42#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
43 memcpy(dst, src, len)
44
45extern void __flush_dcache_icache(void *page_va);
46extern void __flush_dcache_icache_phys(unsigned long physaddr);
47extern void flush_dcache_icache_page(struct page *page);
48#endif /* _PPC_CACHEFLUSH_H */
49#endif /* __KERNEL__ */