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#pragma ident "%Z%%M% %I% %E% SMI" 28 29#include <sys/param.h> 30#include <sys/errno.h> 31#include <sys/asm_linkage.h> 32#include <sys/vtrace.h> 33#include <sys/machthread.h> 34#include <sys/clock.h> 35#include <sys/asi.h> 36#include <sys/fsr.h> 37#include <sys/privregs.h> 38#include <sys/pte.h> 39#include <sys/mmu.h> 40#include <sys/spitregs.h> 41 42#if defined(lint) 43 44#else /* lint */ 45#include "assym.h" 46#endif /* lint */ 47 48#define TT_HSM 0x99 49 50#if defined(lint) 51void 52sysctrl_freeze(void) 53{} 54#else /* lint */ 55/* 56 * This routine quiets a cpu and has it spin on a barrier. 57 * It is used during memory sparing so that no memory operation 58 * occurs during the memory copy. 59 * 60 * Entry: 61 * %g1 - gate array base address 62 * %g2 - barrier base address 63 * %g3 - arg2 64 * %g4 - arg3 65 * 66 * Register Usage: 67 * %g3 - saved pstate 68 * %g4 - temporary 69 * %g5 - check for panicstr 70 */ 71 ENTRY_NP(sysctrl_freeze) 72 CPU_INDEX(%g4, %g5) 73 sll %g4, 2, %g4 74 add %g4, %g1, %g4 ! compute address of gate id 75 76 st %g4, [%g4] ! indicate we are ready 77 membar #Sync 781: 79 sethi %hi(panicstr), %g5 80 ldn [%g5 + %lo(panicstr)], %g5 81 brnz %g5, 2f ! exit if in panic 82 nop 83 ld [%g2], %g4 84 brz,pt %g4, 1b ! spin until barrier true 85 nop 86 872: 88 retry 89 membar #Sync 90 SET_SIZE(sysctrl_freeze) 91 92#endif /* lint */ 93