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2010-08-25T09:23:17
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/*
* ========== Copyright Header Begin ==========================================
*
* Hypervisor Software File: prom_node.c
*
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
*
* - Do no alter or remove copyright notices
*
* - Redistribution and use of this software in source and binary forms, with
* or without modification, are permitted provided that the following
* conditions are met:
*
* - Redistribution of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind.
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN
* OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR
* FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed, licensed or
* intended for use in the design, construction, operation or maintenance of
* any nuclear facility.
*
* ========== Copyright Header End ============================================
*/
/*
* Copyright (c) 2000-2003 Sun Microsystems, Inc.
* All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "@(#)prom_node.c 1.1 00/07/22 SMI"
#include <sys/promif.h>
#include <sys/promimpl.h>
/*
* Routines for walking the device tree
*/
dnode_t
prom_nextnode(register dnode_t nodeid)
{
cell_t ci[5];
ci[0] = p1275_ptr2cell("peer"); /* Service name */
ci[1] = (cell_t)1; /* #argument cells */
ci[2] = (cell_t)1; /* #result cells */
ci[3] = p1275_dnode2cell(nodeid); /* Arg1: input phandle */
ci[4] = p1275_dnode2cell(OBP_NONODE); /* Res1: Prime result */
(void) p1275_cif_handler(&ci);
return (p1275_cell2dnode(ci[4])); /* Res1: peer phandle */
}
dnode_t
prom_childnode(register dnode_t nodeid)
{
cell_t ci[5];
ci[0] = p1275_ptr2cell("child"); /* Service name */
ci[1] = (cell_t)1; /* #argument cells */
ci[2] = (cell_t)1; /* #result cells */
ci[3] = p1275_dnode2cell(nodeid); /* Arg1: input phandle */
ci[4] = p1275_dnode2cell(OBP_NONODE); /* Res1: Prime result */
(void) p1275_cif_handler(&ci);
return (p1275_cell2dnode(ci[4])); /* Res1: child phandle */
}
dnode_t
prom_parentnode(register dnode_t nodeid)
{
cell_t ci[5];
ci[0] = p1275_ptr2cell("parent"); /* Service name */
ci[1] = (cell_t)1; /* #argument cells */
ci[2] = (cell_t)1; /* #result cells */
ci[3] = p1275_dnode2cell(nodeid); /* Arg1: input phandle */
ci[4] = p1275_dnode2cell(OBP_NONODE); /* Res1: Prime result */
(void) p1275_cif_handler(&ci);
return (p1275_cell2dnode(ci[4])); /* Res1: parent phandle */
}
dnode_t
prom_finddevice(char *path)
{
cell_t ci[5];
ci[0] = p1275_ptr2cell("finddevice"); /* Service name */
ci[1] = (cell_t)1; /* #argument cells */
ci[2] = (cell_t)1; /* #result cells */
ci[3] = p1275_ptr2cell(path); /* Arg1: pathname */
ci[4] = p1275_dnode2cell(OBP_BADNODE); /* Res1: Prime result */
(void) p1275_cif_handler(&ci);
return ((dnode_t)p1275_cell2dnode(ci[4])); /* Res1: phandle */
}