include/sys/memlist.h

   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  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _SYS_MEMLIST_H
  27 #define _SYS_MEMLIST_H
  28
  29 /*
  30  * Common memlist format, exported by boot.
  31  */
  32
  33 #include <sys/types.h>
  34
  35 #ifdef __cplusplus
  36 extern "C" {
  37 #endif
  38
  39 /*
  40  * Boot programs of version 4 and greater pass a linked list
  41  * of struct memlist to the kernel.
  42  */
  43 typedef struct memlist {
  44         uint64_t        ml_address;     /* starting address of memory segment */
  45         uint64_t        ml_size;        /* size of same */
  46         struct memlist  *ml_next;       /* link to next list element */
  47         struct memlist  *ml_prev;       /* link to previous list element */
  48 } memlist_t;
  49
  50 extern int address_in_memlist(struct memlist *, uint64_t, size_t);
  51
  52 /*
  53  * phys_install is the pointer to the physical installed memory list
  54  * which may change when memory is added or deleted. The functions
  55  * memlist_read_lock() and memlist_read_unlock() should be used
  56  * to protect reading this list.
  57  */
  58 extern struct memlist *phys_install;
  59
  60 #if defined(__x86)
  61 /*
  62  * bios reserved memory
  63  */
  64 extern struct memlist *bios_rsvd;
  65 #endif
  66
  67 extern pgcnt_t num_phys_pages();
  68
  69 #ifdef __cplusplus
  70 }
  71 #endif
  72
  73 #endif  /* _SYS_MEMLIST_H */