1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22/* 23 * Copyright 2001 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27#include <sys/param.h> 28#include <sys/errno.h> 29#include <sys/asm_linkage.h> 30#include <sys/vtrace.h> 31#include <sys/machthread.h> 32#include <sys/clock.h> 33#include <sys/asi.h> 34#include <sys/fsr.h> 35#include <sys/privregs.h> 36#include <sys/pte.h> 37#include <sys/mmu.h> 38#include <sys/spitregs.h> 39 40#include "assym.h" 41 42#define TT_HSM 0x99 43 44/* 45 * This routine quiets a cpu and has it spin on a barrier. 46 * It is used during memory sparing so that no memory operation 47 * occurs during the memory copy. 48 * 49 * Entry: 50 * %g1 - gate array base address 51 * %g2 - barrier base address 52 * %g3 - arg2 53 * %g4 - arg3 54 * 55 * Register Usage: 56 * %g3 - saved pstate 57 * %g4 - temporary 58 * %g5 - check for panicstr 59 */ 60 ENTRY_NP(sysctrl_freeze) 61 CPU_INDEX(%g4, %g5) 62 sll %g4, 2, %g4 63 add %g4, %g1, %g4 ! compute address of gate id 64 65 st %g4, [%g4] ! indicate we are ready 66 membar #Sync 671: 68 sethi %hi(panicstr), %g5 69 ldn [%g5 + %lo(panicstr)], %g5 70 brnz %g5, 2f ! exit if in panic 71 nop 72 ld [%g2], %g4 73 brz,pt %g4, 1b ! spin until barrier true 74 nop 75 762: 77 retry 78 membar #Sync 79 SET_SIZE(sysctrl_freeze) 80 81