xref: /illumos-gate/usr/src/uts/common/sys/memlist.h (revision 56f33205)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5ae115bc7Smrj  * Common Development and Distribution License (the "License").
6ae115bc7Smrj  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
217c478bd9Sstevel@tonic-gate /*
22*56f33205SJonathan Adams  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
23ae115bc7Smrj  * Use is subject to license terms.
247c478bd9Sstevel@tonic-gate  */
257c478bd9Sstevel@tonic-gate 
267c478bd9Sstevel@tonic-gate #ifndef	_SYS_MEMLIST_H
277c478bd9Sstevel@tonic-gate #define	_SYS_MEMLIST_H
287c478bd9Sstevel@tonic-gate 
297c478bd9Sstevel@tonic-gate /*
307c478bd9Sstevel@tonic-gate  * Common memlist format, exported by boot.
317c478bd9Sstevel@tonic-gate  */
327c478bd9Sstevel@tonic-gate 
337c478bd9Sstevel@tonic-gate #include <sys/types.h>
347c478bd9Sstevel@tonic-gate 
357c478bd9Sstevel@tonic-gate #ifdef __cplusplus
367c478bd9Sstevel@tonic-gate extern "C" {
377c478bd9Sstevel@tonic-gate #endif
387c478bd9Sstevel@tonic-gate 
397c478bd9Sstevel@tonic-gate /*
407c478bd9Sstevel@tonic-gate  * Boot programs of version 4 and greater pass a linked list
417c478bd9Sstevel@tonic-gate  * of struct memlist to the kernel.
427c478bd9Sstevel@tonic-gate  */
43*56f33205SJonathan Adams typedef struct memlist {
44*56f33205SJonathan Adams 	uint64_t	ml_address;	/* starting address of memory segment */
45*56f33205SJonathan Adams 	uint64_t	ml_size;	/* size of same */
46*56f33205SJonathan Adams 	struct memlist	*ml_next;	/* link to next list element */
47*56f33205SJonathan Adams 	struct memlist	*ml_prev;	/* link to previous list element */
48*56f33205SJonathan Adams } memlist_t;
497c478bd9Sstevel@tonic-gate 
507c478bd9Sstevel@tonic-gate extern int address_in_memlist(struct memlist *, uint64_t, size_t);
517c478bd9Sstevel@tonic-gate 
527c478bd9Sstevel@tonic-gate /*
537c478bd9Sstevel@tonic-gate  * phys_install is the pointer to the physical installed memory list
547c478bd9Sstevel@tonic-gate  * which may change when memory is added or deleted. The functions
557c478bd9Sstevel@tonic-gate  * memlist_read_lock() and memlist_read_unlock() should be used
567c478bd9Sstevel@tonic-gate  * to protect reading this list.
577c478bd9Sstevel@tonic-gate  */
587c478bd9Sstevel@tonic-gate extern struct memlist *phys_install;
597c478bd9Sstevel@tonic-gate 
601de082f7SVikram Hegde #if defined(__x86)
611de082f7SVikram Hegde /*
621de082f7SVikram Hegde  * bios reserved memory
631de082f7SVikram Hegde  */
641de082f7SVikram Hegde extern struct memlist *bios_rsvd;
651de082f7SVikram Hegde #endif
661de082f7SVikram Hegde 
67843e1988Sjohnlev extern pgcnt_t num_phys_pages();
68843e1988Sjohnlev 
697c478bd9Sstevel@tonic-gate #ifdef __cplusplus
707c478bd9Sstevel@tonic-gate }
717c478bd9Sstevel@tonic-gate #endif
727c478bd9Sstevel@tonic-gate 
737c478bd9Sstevel@tonic-gate #endif	/* _SYS_MEMLIST_H */
74