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 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include <sys/promif.h> 28 #include <sys/promimpl.h> 29 30 /* 31 * This function is installed for both pre and post output during cpr to keep 32 * the early stages of the resuming kernel from accessing outside the nucleus 33 * mapping; we assert that the console is all powered up before it is installed 34 */ 35 static void null_outfunc(void)36null_outfunc(void) 37 { 38 } 39 40 static promif_owrap_t nullwrapper = 41 { 42 null_outfunc, 43 null_outfunc 44 }; 45 46 static promif_owrap_t *wrapper = &nullwrapper; 47 static promif_owrap_t pmwrapper; 48 static promif_owrap_t *saved_wrapper; 49 50 promif_owrap_t promif_preout(void)51*promif_preout(void) 52 { 53 promif_owrap_t *ow = wrapper; 54 (ow->preout)(); 55 return (ow); 56 } 57 58 void promif_postout(promif_owrap_t * ow)59promif_postout(promif_owrap_t *ow) 60 { 61 (ow->postout)(); 62 } 63 64 void prom_set_outfuncs(void (* pref)(void),void (* postf)(void))65prom_set_outfuncs(void (*pref)(void), void (*postf)(void)) 66 { 67 pmwrapper.preout = pref; 68 pmwrapper.postout = postf; 69 wrapper = &pmwrapper; 70 } 71 72 void prom_suspend_prepost(void)73prom_suspend_prepost(void) 74 { 75 saved_wrapper = wrapper; 76 wrapper = &nullwrapper; 77 } 78 79 void prom_resume_prepost(void)80prom_resume_prepost(void) 81 { 82 wrapper = saved_wrapper; 83 saved_wrapper = NULL; 84 } 85