1*1341Sstevel/* 2*1341Sstevel * CDDL HEADER START 3*1341Sstevel * 4*1341Sstevel * The contents of this file are subject to the terms of the 5*1341Sstevel * Common Development and Distribution License (the "License"). 6*1341Sstevel * You may not use this file except in compliance with the License. 7*1341Sstevel * 8*1341Sstevel * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9*1341Sstevel * or http://www.opensolaris.org/os/licensing. 10*1341Sstevel * See the License for the specific language governing permissions 11*1341Sstevel * and limitations under the License. 12*1341Sstevel * 13*1341Sstevel * When distributing Covered Code, include this CDDL HEADER in each 14*1341Sstevel * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15*1341Sstevel * If applicable, add the following below this CDDL HEADER, with the 16*1341Sstevel * fields enclosed by brackets "[]" replaced with your own identifying 17*1341Sstevel * information: Portions Copyright [yyyy] [name of copyright owner] 18*1341Sstevel * 19*1341Sstevel * CDDL HEADER END 20*1341Sstevel */ 21*1341Sstevel 22*1341Sstevel/* 23*1341Sstevel * Copyright 2001 Sun Microsystems, Inc. All rights reserved. 24*1341Sstevel * Use is subject to license terms. 25*1341Sstevel */ 26*1341Sstevel 27*1341Sstevel#pragma ident "%Z%%M% %I% %E% SMI" 28*1341Sstevel 29*1341Sstevel#include <sys/param.h> 30*1341Sstevel#include <sys/errno.h> 31*1341Sstevel#include <sys/asm_linkage.h> 32*1341Sstevel#include <sys/vtrace.h> 33*1341Sstevel#include <sys/machthread.h> 34*1341Sstevel#include <sys/clock.h> 35*1341Sstevel#include <sys/asi.h> 36*1341Sstevel#include <sys/fsr.h> 37*1341Sstevel#include <sys/privregs.h> 38*1341Sstevel#include <sys/pte.h> 39*1341Sstevel#include <sys/mmu.h> 40*1341Sstevel#include <sys/spitregs.h> 41*1341Sstevel 42*1341Sstevel#if defined(lint) 43*1341Sstevel 44*1341Sstevel#else /* lint */ 45*1341Sstevel#include "assym.h" 46*1341Sstevel#endif /* lint */ 47*1341Sstevel 48*1341Sstevel#define TT_HSM 0x99 49*1341Sstevel 50*1341Sstevel#if defined(lint) 51*1341Sstevelvoid 52*1341Sstevelsysctrl_freeze(void) 53*1341Sstevel{} 54*1341Sstevel#else /* lint */ 55*1341Sstevel/* 56*1341Sstevel * This routine quiets a cpu and has it spin on a barrier. 57*1341Sstevel * It is used during memory sparing so that no memory operation 58*1341Sstevel * occurs during the memory copy. 59*1341Sstevel * 60*1341Sstevel * Entry: 61*1341Sstevel * %g1 - gate array base address 62*1341Sstevel * %g2 - barrier base address 63*1341Sstevel * %g3 - arg2 64*1341Sstevel * %g4 - arg3 65*1341Sstevel * 66*1341Sstevel * Register Usage: 67*1341Sstevel * %g3 - saved pstate 68*1341Sstevel * %g4 - temporary 69*1341Sstevel * %g5 - check for panicstr 70*1341Sstevel */ 71*1341Sstevel ENTRY_NP(sysctrl_freeze) 72*1341Sstevel CPU_INDEX(%g4, %g5) 73*1341Sstevel sll %g4, 2, %g4 74*1341Sstevel add %g4, %g1, %g4 ! compute address of gate id 75*1341Sstevel 76*1341Sstevel st %g4, [%g4] ! indicate we are ready 77*1341Sstevel membar #Sync 78*1341Sstevel1: 79*1341Sstevel sethi %hi(panicstr), %g5 80*1341Sstevel ldn [%g5 + %lo(panicstr)], %g5 81*1341Sstevel brnz %g5, 2f ! exit if in panic 82*1341Sstevel nop 83*1341Sstevel ld [%g2], %g4 84*1341Sstevel brz,pt %g4, 1b ! spin until barrier true 85*1341Sstevel nop 86*1341Sstevel 87*1341Sstevel2: 88*1341Sstevel retry 89*1341Sstevel membar #Sync 90*1341Sstevel SET_SIZE(sysctrl_freeze) 91*1341Sstevel 92*1341Sstevel#endif /* lint */ 93