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 (c) 1994, by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29#include <sys/promif.h>
30#include <sys/promimpl.h>
31
32/*
33 * Allocate retained physical memory
34 * Returns 0: Success; Non-zero: failure.
35 * Returns *phys_hi, *phys_lo only if successful.
36 */
37int
38prom_retain(char *id, size_t size, u_int align, unsigned long long *physaddr)
39{
40	cell_t ci[11];
41	int rv;
42	ihandle_t imemory = prom_memory_ihandle();
43
44	if ((imemory == (ihandle_t)-1))
45		return (-1);
46
47	ci[0] = p1275_ptr2cell("call-method");	/* Service name */
48	ci[1] = (cell_t)5;			/* #argument cells */
49	ci[2] = (cell_t)3;			/* #result cells */
50	ci[3] = p1275_ptr2cell("SUNW,retain");	/* Arg1: Method name */
51	ci[4] = p1275_ihandle2cell(imemory);	/* Arg2: memory ihandle */
52	ci[5] = p1275_uint2cell(align);		/* Arg2: SA1: align */
53	ci[6] = p1275_size2cell(size);		/* Arg3: SA2: size */
54	ci[7] = p1275_ptr2cell(id);		/* Arg4: SA3: id name */
55
56	promif_preprom();
57	rv = p1275_cif_handler(&ci);
58	promif_postprom();
59
60	if (rv != 0)
61		return (rv);		/* Service "call-method" failed */
62	if (ci[8] != 0)			/* Res1: catch-result */
63		return (-1);		/* Method "SUNW,retain" failed */
64
65	*physaddr = p1275_cells2ull(ci[9], ci[10]);
66					/* Res3: base.hi, Res4: base.lo */
67	return (0);
68}
69