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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1991-1998 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #ifndef _SYS_MEMLIST_H 28 #define _SYS_MEMLIST_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" /* SunOS-4.0 1.7 */ 31 32 /* 33 * Common memlist format, exported by boot. 34 */ 35 36 #include <sys/types.h> 37 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 /* 43 * Boot programs of version 4 and greater pass a linked list 44 * of struct memlist to the kernel. 45 */ 46 struct memlist { 47 uint64_t address; /* starting address of memory segment */ 48 uint64_t size; /* size of same */ 49 struct memlist *next; /* link to next list element */ 50 struct memlist *prev; /* link to previous list element */ 51 }; 52 53 extern int address_in_memlist(struct memlist *, uint64_t, size_t); 54 55 /* 56 * phys_install is the pointer to the physical installed memory list 57 * which may change when memory is added or deleted. The functions 58 * memlist_read_lock() and memlist_read_unlock() should be used 59 * to protect reading this list. 60 */ 61 extern struct memlist *phys_install; 62 extern void memlist_read_lock(void); 63 extern void memlist_read_unlock(void); 64 65 #ifdef __cplusplus 66 } 67 #endif 68 69 #endif /* _SYS_MEMLIST_H */ 70