memlist.h revision 843e19887f64dde75055cf8842fc4db2171eff45
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_MEMLIST_H
#define _SYS_MEMLIST_H
#pragma ident "%Z%%M% %I% %E% SMI" /* SunOS-4.0 1.7 */
/*
* Common memlist format, exported by boot.
*/
#include <sys/types.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* Boot programs of version 4 and greater pass a linked list
* of struct memlist to the kernel.
*/
struct memlist {
uint64_t address; /* starting address of memory segment */
uint64_t size; /* size of same */
struct memlist *next; /* link to next list element */
struct memlist *prev; /* link to previous list element */
};
extern int address_in_memlist(struct memlist *, uint64_t, size_t);
/*
* phys_install is the pointer to the physical installed memory list
* which may change when memory is added or deleted. The functions
* memlist_read_lock() and memlist_read_unlock() should be used
* to protect reading this list.
*/
extern struct memlist *phys_install;
extern pgcnt_t num_phys_pages();
#ifdef __cplusplus
}
#endif
#endif /* _SYS_MEMLIST_H */