1139825Simp/*- 277957Sbenno * Copyright (C) 1995-1997, 1999 Wolfgang Solfrank. 377957Sbenno * Copyright (C) 1995-1997, 1999 TooLs GmbH. 477957Sbenno * All rights reserved. 577957Sbenno * 677957Sbenno * Redistribution and use in source and binary forms, with or without 777957Sbenno * modification, are permitted provided that the following conditions 877957Sbenno * are met: 977957Sbenno * 1. Redistributions of source code must retain the above copyright 1077957Sbenno * notice, this list of conditions and the following disclaimer. 1177957Sbenno * 2. Redistributions in binary form must reproduce the above copyright 1277957Sbenno * notice, this list of conditions and the following disclaimer in the 1377957Sbenno * documentation and/or other materials provided with the distribution. 1477957Sbenno * 3. All advertising materials mentioning features or use of this software 1577957Sbenno * must display the following acknowledgement: 1677957Sbenno * This product includes software developed by TooLs GmbH. 1777957Sbenno * 4. The name of TooLs GmbH may not be used to endorse or promote products 1877957Sbenno * derived from this software without specific prior written permission. 1977957Sbenno * 2077957Sbenno * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 2177957Sbenno * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 2277957Sbenno * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 2377957Sbenno * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2477957Sbenno * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 2577957Sbenno * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 2677957Sbenno * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 2777957Sbenno * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 2877957Sbenno * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 2977957Sbenno * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3077957Sbenno * 3177957Sbenno * $NetBSD: syncicache.c,v 1.2 1999/05/05 12:36:40 tsubai Exp $ 3277957Sbenno */ 3377957Sbenno 34183319Snwhitehorn#ifndef lint 35183319Snwhitehornstatic const char rcsid[] = 36183319Snwhitehorn "$FreeBSD$"; 37183319Snwhitehorn#endif /* not lint */ 3877957Sbenno 3977957Sbenno#include <sys/param.h> 4077957Sbenno#if defined(_KERNEL) || defined(_STANDALONE) 4177957Sbenno#include <sys/time.h> 4277957Sbenno#include <sys/proc.h> 4377957Sbenno#include <vm/vm.h> 4477957Sbenno#endif 4577957Sbenno#include <sys/sysctl.h> 4677957Sbenno 47183319Snwhitehorn#include <machine/cpu.h> 48170473Smarcel#include <machine/md_var.h> 4977957Sbenno 5077957Sbennovoid 5177957Sbenno__syncicache(void *from, int len) 5277957Sbenno{ 53209975Snwhitehorn register_t l, off; 5477957Sbenno char *p; 5577957Sbenno 56209975Snwhitehorn off = (uintptr_t)from & (cacheline_size - 1); 5777957Sbenno l = len += off; 5877957Sbenno p = (char *)from - off; 59183319Snwhitehorn 6077957Sbenno do { 6177957Sbenno __asm __volatile ("dcbst 0,%0" :: "r"(p)); 62183319Snwhitehorn p += cacheline_size; 63183319Snwhitehorn } while ((l -= cacheline_size) > 0); 6477957Sbenno __asm __volatile ("sync"); 6577957Sbenno p = (char *)from - off; 6677957Sbenno do { 6777957Sbenno __asm __volatile ("icbi 0,%0" :: "r"(p)); 68183319Snwhitehorn p += cacheline_size; 69183319Snwhitehorn } while ((len -= cacheline_size) > 0); 70103606Sgrehan __asm __volatile ("sync; isync"); 7177957Sbenno} 72183319Snwhitehorn 73