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.
7 #ifndef _ASM_POWERPC_CACHEFLUSH_H
8 #define _ASM_POWERPC_CACHEFLUSH_H
13 #include <asm/cputable.h>
16 * No cache flushing is required when address mappings are changed,
17 * because the caches on PowerPCs are physically addressed.
19 #define flush_cache_all() do { } while (0)
20 #define flush_cache_mm(mm) do { } while (0)
21 #define flush_cache_dup_mm(mm) do { } while (0)
22 #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)
28 extern void flush_dcache_page(struct page *page);
29 #define flush_dcache_mmap_lock(mapping) do { } while (0)
30 #define flush_dcache_mmap_unlock(mapping) do { } while (0)
32 extern void __flush_icache_range(unsigned long, unsigned long);
33 static inline void flush_icache_range(unsigned long start, unsigned long stop)
35 if (!cpu_has_feature(CPU_FTR_COHERENT_ICACHE))
36 __flush_icache_range(start, stop);
39 extern void flush_icache_user_range(struct vm_area_struct *vma,
40 struct page *page, unsigned long addr,
42 extern void __flush_dcache_icache(void *page_va);
43 extern void flush_dcache_icache_page(struct page *page);
44 #if defined(CONFIG_PPC32) && !defined(CONFIG_BOOKE)
45 extern void __flush_dcache_icache_phys(unsigned long physaddr);
46 #endif /* CONFIG_PPC32 && !CONFIG_BOOKE */
48 extern void flush_dcache_range(unsigned long start, unsigned long stop);
50 extern void clean_dcache_range(unsigned long start, unsigned long stop);
51 extern void invalidate_dcache_range(unsigned long start, unsigned long stop);
52 #endif /* CONFIG_PPC32 */
54 extern void flush_inval_dcache_range(unsigned long start, unsigned long stop);
55 extern void flush_dcache_phys_range(unsigned long start, unsigned long stop);
58 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
60 memcpy(dst, src, len); \
61 flush_icache_user_range(vma, page, vaddr, len); \
63 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
68 #ifdef CONFIG_DEBUG_PAGEALLOC
69 /* internal debugging function */
70 void kernel_map_pages(struct page *page, int numpages, int enable);
73 #endif /* __KERNEL__ */
75 #endif /* _ASM_POWERPC_CACHEFLUSH_H */