1/* MN10300 Cache flushing routines 2 * 3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. 4 * Written by David Howells (dhowells@redhat.com) 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public Licence 8 * as published by the Free Software Foundation; either version 9 * 2 of the Licence, or (at your option) any later version. 10 */ 11#include <linux/module.h> 12#include <linux/mm.h> 13#include <linux/mman.h> 14#include <linux/threads.h> 15#include <asm/page.h> 16#include <asm/pgtable.h> 17#include <asm/processor.h> 18#include <asm/cacheflush.h> 19#include <asm/io.h> 20#include <asm/uaccess.h> 21#include <asm/smp.h> 22#include "cache-smp.h" 23 24EXPORT_SYMBOL(mn10300_icache_inv); 25EXPORT_SYMBOL(mn10300_icache_inv_range); 26EXPORT_SYMBOL(mn10300_icache_inv_range2); 27EXPORT_SYMBOL(mn10300_icache_inv_page); 28EXPORT_SYMBOL(mn10300_dcache_inv); 29EXPORT_SYMBOL(mn10300_dcache_inv_range); 30EXPORT_SYMBOL(mn10300_dcache_inv_range2); 31EXPORT_SYMBOL(mn10300_dcache_inv_page); 32 33#ifdef CONFIG_MN10300_CACHE_WBACK 34EXPORT_SYMBOL(mn10300_dcache_flush); 35EXPORT_SYMBOL(mn10300_dcache_flush_inv); 36EXPORT_SYMBOL(mn10300_dcache_flush_inv_range); 37EXPORT_SYMBOL(mn10300_dcache_flush_inv_range2); 38EXPORT_SYMBOL(mn10300_dcache_flush_inv_page); 39EXPORT_SYMBOL(mn10300_dcache_flush_range); 40EXPORT_SYMBOL(mn10300_dcache_flush_range2); 41EXPORT_SYMBOL(mn10300_dcache_flush_page); 42#endif 43 44/* 45 * allow userspace to flush the instruction cache 46 */ 47asmlinkage long sys_cacheflush(unsigned long start, unsigned long end) 48{ 49 if (end < start) 50 return -EINVAL; 51 52 flush_icache_range(start, end); 53 return 0; 54} 55