arch/x86/kernel/promif/prom_node.c

   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 2005 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <sys/promif.h>
  30 #include <sys/promimpl.h>
  31 #include <sys/prom_emul.h>
  32 #include <sys/kmem.h>
  33
  34 /*
  35  * Routines for walking the PROMs devinfo tree
  36  * The prom tree is for /dev/openprom compatibility only,
  37  * so we fail all calls except those needed by /dev/openprom
  38  */
  39
  40 /*
  41  * Return the root nodeid.
  42  * Calling prom_nextnode(0) returns the root nodeid.
  43  */
  44 pnode_t
  45 prom_rootnode(void)
  46 {
  47         static pnode_t rootnode;
  48
  49         return (rootnode ? rootnode : (rootnode = prom_nextnode(OBP_NONODE)));
  50 }
  51
  52 pnode_t
  53 prom_nextnode(pnode_t nodeid)
  54 {
  55         return (promif_nextnode(nodeid));
  56 }
  57
  58 pnode_t
  59 prom_childnode(pnode_t nodeid)
  60 {
  61
  62         return (promif_childnode(nodeid));
  63 }
  64
  65 /*
  66  * disallow searching
  67  */
  68 /*ARGSUSED*/
  69 pnode_t
  70 prom_findnode_byname(pnode_t n, char *name)
  71 {
  72         return (OBP_NONODE);
  73 }
  74
  75 pnode_t
  76 prom_chosennode(void)
  77 {
  78         return (OBP_NONODE);
  79 }
  80
  81 pnode_t
  82 prom_optionsnode(void)
  83 {
  84         return (OBP_NONODE);
  85 }
  86
  87 /*ARGSUSED*/
  88 pnode_t
  89 prom_finddevice(char *path)
  90 {
  91         return (OBP_BADNODE);
  92 }
  93
  94 pnode_t
  95 prom_alias_node(void)
  96 {
  97         return (OBP_BADNODE);
  98 }
  99
 100 /*ARGSUSED*/
 101 void
 102 prom_pathname(char *buf)
 103 {
 104         /* nothing, just to get consconfig_dacf to compile */
 105 }