/* * include/asm-ppc/cacheflush.h * *  This program is free software; you can redistribute it and/or *  modify it under the terms of the GNU General Public License *  as published by the Free Software Foundation; either version *  2 of the License, or (at your option) any later version. */#ifdef __KERNEL__#ifndef _PPC_CACHEFLUSH_H#define _PPC_CACHEFLUSH_H #include <linux/mm.h> /* * No cache flushing is required when address mappings are * changed, because the caches on PowerPCs are physically * addressed.  -- paulus * Also, when SMP we use the coherency (M) bit of the * BATs and PTEs.  -- Cort */#define flush_cache_all()		do { } while (0)#define flush_cache_mm(mm)		do { } while (0)#define flush_cache_range(vma, a, b)	do { } while (0)#define flush_cache_page(vma, p, pfn)	do { } while (0)#define flush_icache_page(vma, page)	do { } while (0)#define flush_cache_vmap(start, end)	do { } while (0)#define flush_cache_vunmap(start, end)	do { } while (0) extern void flush_dcache_page(struct page *page);#define flush_dcache_mmap_lock(mapping)		do { } while (0)#define flush_dcache_mmap_unlock(mapping)	do { } while (0) extern void flush_icache_range(unsigned long, unsigned long);extern void flush_icache_user_range(struct vm_area_struct *vma,		struct page *page, unsigned long addr, int len); #define copy_to_user_page(vma, page, vaddr, dst, src, len) \do { memcpy(dst, src, len); \     flush_icache_user_range(vma, page, vaddr, len); \} while (0)#define copy_from_user_page(vma, page, vaddr, dst, src, len) \	memcpy(dst, src, len) extern void __flush_dcache_icache(void *page_va);extern void __flush_dcache_icache_phys(unsigned long physaddr);extern void flush_dcache_icache_page(struct page *page);#endif /* _PPC_CACHEFLUSH_H */#endif /* __KERNEL__ */