syncicache.c revision 331722
1178676Ssam/*- 2210111Sbschmidt * Copyright (C) 1995-1997, 1999 Wolfgang Solfrank. 3178676Ssam * Copyright (C) 1995-1997, 1999 TooLs GmbH. 4178676Ssam * All rights reserved. 5198429Srpaulo * 6178676Ssam * Redistribution and use in source and binary forms, with or without 7178676Ssam * modification, are permitted provided that the following conditions 8178676Ssam * are met: 9178676Ssam * 1. Redistributions of source code must retain the above copyright 10178676Ssam * notice, this list of conditions and the following disclaimer. 11178676Ssam * 2. Redistributions in binary form must reproduce the above copyright 12178676Ssam * notice, this list of conditions and the following disclaimer in the 13178676Ssam * documentation and/or other materials provided with the distribution. 14178676Ssam * 3. All advertising materials mentioning features or use of this software 15178676Ssam * must display the following acknowledgement: 16178676Ssam * This product includes software developed by TooLs GmbH. 17178676Ssam * 4. The name of TooLs GmbH may not be used to endorse or promote products 18178676Ssam * derived from this software without specific prior written permission. 19178676Ssam * 20178676Ssam * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 21178676Ssam * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22198429Srpaulo * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23198429Srpaulo * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24198429Srpaulo * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25198429Srpaulo * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 26178676Ssam * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 27198429Srpaulo * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 28198429Srpaulo * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 29178676Ssam * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30198429Srpaulo * 31198429Srpaulo * $NetBSD: syncicache.c,v 1.2 1999/05/05 12:36:40 tsubai Exp $ 32178676Ssam */ 33198429Srpaulo 34198429Srpaulo#include <sys/cdefs.h> 35201209Srpaulo__FBSDID("$FreeBSD: stable/11/sys/powerpc/powerpc/syncicache.c 331722 2018-03-29 02:50:57Z eadler $"); 36201209Srpaulo 37201209Srpaulo#include <sys/param.h> 38198429Srpaulo#if defined(_KERNEL) || defined(_STANDALONE) 39178676Ssam#include <sys/time.h> 40178676Ssam#include <sys/proc.h> 41198429Srpaulo#include <vm/vm.h> 42178676Ssam#endif 43178676Ssam#include <sys/sysctl.h> 44198429Srpaulo 45198429Srpaulo#include <machine/cpu.h> 46198429Srpaulo#include <machine/md_var.h> 47198429Srpaulo 48198429Srpaulovoid 49198429Srpaulo__syncicache(void *from, int len) 50198429Srpaulo{ 51198429Srpaulo register_t l, off; 52198429Srpaulo char *p; 53198429Srpaulo 54198429Srpaulo off = (uintptr_t)from & (cacheline_size - 1); 55198429Srpaulo l = len += off; 56178676Ssam p = (char *)from - off; 57178676Ssam 58178676Ssam do { 59198429Srpaulo __asm __volatile ("dcbst 0,%0" :: "r"(p)); 60198429Srpaulo p += cacheline_size; 61201209Srpaulo } while ((l -= cacheline_size) > 0); 62198429Srpaulo __asm __volatile ("sync"); 63201209Srpaulo p = (char *)from - off; 64198429Srpaulo do { 65178676Ssam __asm __volatile ("icbi 0,%0" :: "r"(p)); 66198429Srpaulo p += cacheline_size; 67198429Srpaulo } while ((len -= cacheline_size) > 0); 68198429Srpaulo __asm __volatile ("sync; isync"); 69198429Srpaulo} 70198429Srpaulo 71198429Srpaulo