Initial commit of OpenSPARC T2 architecture model.

[OpenSPARC-T2-SAM] / obp / tools / promif / common / prom_2path.c

/*
* ========== Copyright Header Begin ==========================================
*
* Hypervisor Software File: prom_2path.c
* 
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
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*    or without modification, are permitted provided that the following 
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* may be used to endorse or promote products derived from this software 
* without specific prior written permission. 
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*     This software is provided "AS IS," without a warranty of any kind. 
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/*
 * Copyright (c) 2000-2003 Sun Microsystems, Inc.
 * All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident	"@(#)prom_2path.c	1.1	00/07/22 SMI"

#include <sys/promif.h>
#include <sys/promimpl.h>

static int32_t handle2path(char *svc, uint32_t handle, char *buf, uint32_t len);

int
prom_ihandle_to_path(ihandle_t instance, char *buf, uint32_t len)
{
	return (handle2path("instance-to-path", (uint32_t)instance, buf, len));
}

int
prom_phandle_to_path(phandle_t package, char *buf, uint32_t len)
{
	return (handle2path("package-to-path", (uint32_t)package, buf, len));
}

static int
handle2path(char *service, uint32_t handle, char *buf, uint32_t len)
{
	cell_t ci[7];
	int32_t rv;

	ci[0] = p1275_ptr2cell(service);	/* Service name */
	ci[1] = 3;				/* #argument cells */
	ci[2] = 1;				/* #return cells */
	ci[3] = p1275_uint2cell(handle);	/* Arg1: ihandle/phandle */
	ci[4] = p1275_ptr2cell(buf);		/* Arg2: Result buffer */
	ci[5] = p1275_uint2cell(len);		/* Arg3: Buffer len */
	rv = p1275_cif_handler(&ci);

	if (rv != 0)
		return (-1);
	return (p1275_cell2int(ci[6]));		/* Res1: Actual length */
}