blob: 5b9312220e849e40dad8d7516b303b619431d08b [file] [log] [blame]
David Gibson26ef5c02005-11-10 11:50:16 +11001/*
2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public License
4 * as published by the Free Software Foundation; either version
5 * 2 of the License, or (at your option) any later version.
6 */
7#ifndef _ASM_POWERPC_CACHEFLUSH_H
8#define _ASM_POWERPC_CACHEFLUSH_H
9
10#ifdef __KERNEL__
11
12#include <linux/mm.h>
13#include <asm/cputable.h>
14
15/*
16 * No cache flushing is required when address mappings are changed,
17 * because the caches on PowerPCs are physically addressed.
18 */
19#define flush_cache_all() do { } while (0)
20#define flush_cache_mm(mm) do { } while (0)
Ralf Baechleec8c0442006-12-12 17:14:57 +000021#define flush_cache_dup_mm(mm) do { } while (0)
David Gibson26ef5c02005-11-10 11:50:16 +110022#define flush_cache_range(vma, start, end) do { } while (0)
23#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
24#define flush_icache_page(vma, page) do { } while (0)
25#define flush_cache_vmap(start, end) do { } while (0)
26#define flush_cache_vunmap(start, end) do { } while (0)
27
Ilya Loginov2d4dc892009-11-26 09:16:19 +010028#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
David Gibson26ef5c02005-11-10 11:50:16 +110029extern void flush_dcache_page(struct page *page);
30#define flush_dcache_mmap_lock(mapping) do { } while (0)
31#define flush_dcache_mmap_unlock(mapping) do { } while (0)
32
Zhao Chenhuid0832a72012-07-20 20:42:36 +080033extern void __flush_disable_L1(void);
34
Kevin Hao3b04c302013-08-06 18:23:31 +080035extern void flush_icache_range(unsigned long, unsigned long);
David Gibson26ef5c02005-11-10 11:50:16 +110036extern void flush_icache_user_range(struct vm_area_struct *vma,
37 struct page *page, unsigned long addr,
38 int len);
39extern void __flush_dcache_icache(void *page_va);
40extern void flush_dcache_icache_page(struct page *page);
41#if defined(CONFIG_PPC32) && !defined(CONFIG_BOOKE)
42extern void __flush_dcache_icache_phys(unsigned long physaddr);
43#endif /* CONFIG_PPC32 && !CONFIG_BOOKE */
44
45extern void flush_dcache_range(unsigned long start, unsigned long stop);
46#ifdef CONFIG_PPC32
47extern void clean_dcache_range(unsigned long start, unsigned long stop);
48extern void invalidate_dcache_range(unsigned long start, unsigned long stop);
49#endif /* CONFIG_PPC32 */
50#ifdef CONFIG_PPC64
51extern void flush_inval_dcache_range(unsigned long start, unsigned long stop);
52extern void flush_dcache_phys_range(unsigned long start, unsigned long stop);
53#endif
54
55#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
56 do { \
57 memcpy(dst, src, len); \
58 flush_icache_user_range(vma, page, vaddr, len); \
59 } while (0)
60#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
61 memcpy(dst, src, len)
62
63
Benjamin Herrenschmidt88df6e92007-04-12 15:30:22 +100064
65#ifdef CONFIG_DEBUG_PAGEALLOC
66/* internal debugging function */
67void kernel_map_pages(struct page *page, int numpages, int enable);
68#endif
69
David Gibson26ef5c02005-11-10 11:50:16 +110070#endif /* __KERNEL__ */
71
72#endif /* _ASM_POWERPC_CACHEFLUSH_H */