1/* 2 * include/asm-v850/cacheflush.h 3 * 4 * Copyright (C) 2001,02,03 NEC Electronics Corporation 5 * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org> 6 * 7 * This file is subject to the terms and conditions of the GNU General 8 * Public License. See the file COPYING in the main directory of this 9 * archive for more details. 10 * 11 * Written by Miles Bader <miles@gnu.org> 12 */ 13 14#ifndef __V850_CACHEFLUSH_H__ 15#define __V850_CACHEFLUSH_H__ 16 17/* Somebody depends on this; sigh... */ 18#include <linux/mm.h> 19 20#include <asm/machdep.h> 21 22 23/* The following are all used by the kernel in ways that only affect 24 systems with MMUs, so we don't need them. */ 25#define flush_cache_all() ((void)0) 26#define flush_cache_mm(mm) ((void)0) 27#define flush_cache_dup_mm(mm) ((void)0) 28#define flush_cache_range(vma, start, end) ((void)0) 29#define flush_cache_page(vma, vmaddr, pfn) ((void)0) 30#define flush_dcache_page(page) ((void)0) 31#define flush_dcache_mmap_lock(mapping) ((void)0) 32#define flush_dcache_mmap_unlock(mapping) ((void)0) 33#define flush_cache_vmap(start, end) ((void)0) 34#define flush_cache_vunmap(start, end) ((void)0) 35 36#ifdef CONFIG_NO_CACHE 37 38/* Some systems have no cache at all, in which case we don't need these 39 either. */ 40#define flush_icache() ((void)0) 41#define flush_icache_range(start, end) ((void)0) 42#define flush_icache_page(vma,pg) ((void)0) 43#define flush_icache_user_range(vma,pg,adr,len) ((void)0) 44#define flush_cache_sigtramp(vaddr) ((void)0) 45 46#else /* !CONFIG_NO_CACHE */ 47 48struct page; 49struct mm_struct; 50struct vm_area_struct; 51 52/* Otherwise, somebody had better define them. */ 53extern void flush_icache (void); 54extern void flush_icache_range (unsigned long start, unsigned long end); 55extern void flush_icache_page (struct vm_area_struct *vma, struct page *page); 56extern void flush_icache_user_range (struct vm_area_struct *vma, 57 struct page *page, 58 unsigned long adr, int len); 59extern void flush_cache_sigtramp (unsigned long addr); 60 61#endif /* CONFIG_NO_CACHE */ 62 63#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 64do { memcpy(dst, src, len); \ 65 flush_icache_user_range(vma, page, vaddr, len); \ 66} while (0) 67#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 68 memcpy(dst, src, len) 69 70#endif /* __V850_CACHEFLUSH_H__ */ 71