xref: /titanic_52/usr/src/psm/promif/ieee1275/sun4/prom_retain.c (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright (c) 1994, by Sun Microsystems, Inc.
24*7c478bd9Sstevel@tonic-gate  * All rights reserved.
25*7c478bd9Sstevel@tonic-gate  */
26*7c478bd9Sstevel@tonic-gate 
27*7c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
28*7c478bd9Sstevel@tonic-gate 
29*7c478bd9Sstevel@tonic-gate #include <sys/promif.h>
30*7c478bd9Sstevel@tonic-gate #include <sys/promimpl.h>
31*7c478bd9Sstevel@tonic-gate 
32*7c478bd9Sstevel@tonic-gate /*
33*7c478bd9Sstevel@tonic-gate  * Allocate retained physical memory
34*7c478bd9Sstevel@tonic-gate  * Returns 0: Success; Non-zero: failure.
35*7c478bd9Sstevel@tonic-gate  * Returns *phys_hi, *phys_lo only if successful.
36*7c478bd9Sstevel@tonic-gate  */
37*7c478bd9Sstevel@tonic-gate int
38*7c478bd9Sstevel@tonic-gate prom_retain(char *id, size_t size, u_int align, unsigned long long *physaddr)
39*7c478bd9Sstevel@tonic-gate {
40*7c478bd9Sstevel@tonic-gate 	cell_t ci[11];
41*7c478bd9Sstevel@tonic-gate 	int rv;
42*7c478bd9Sstevel@tonic-gate 	ihandle_t imemory = prom_memory_ihandle();
43*7c478bd9Sstevel@tonic-gate 
44*7c478bd9Sstevel@tonic-gate 	if ((imemory == (ihandle_t)-1))
45*7c478bd9Sstevel@tonic-gate 		return (-1);
46*7c478bd9Sstevel@tonic-gate 
47*7c478bd9Sstevel@tonic-gate 	ci[0] = p1275_ptr2cell("call-method");	/* Service name */
48*7c478bd9Sstevel@tonic-gate 	ci[1] = (cell_t)5;			/* #argument cells */
49*7c478bd9Sstevel@tonic-gate 	ci[2] = (cell_t)3;			/* #result cells */
50*7c478bd9Sstevel@tonic-gate 	ci[3] = p1275_ptr2cell("SUNW,retain");	/* Arg1: Method name */
51*7c478bd9Sstevel@tonic-gate 	ci[4] = p1275_ihandle2cell(imemory);	/* Arg2: memory ihandle */
52*7c478bd9Sstevel@tonic-gate 	ci[5] = p1275_uint2cell(align);		/* Arg2: SA1: align */
53*7c478bd9Sstevel@tonic-gate 	ci[6] = p1275_size2cell(size);		/* Arg3: SA2: size */
54*7c478bd9Sstevel@tonic-gate 	ci[7] = p1275_ptr2cell(id);		/* Arg4: SA3: id name */
55*7c478bd9Sstevel@tonic-gate 
56*7c478bd9Sstevel@tonic-gate 	promif_preprom();
57*7c478bd9Sstevel@tonic-gate 	rv = p1275_cif_handler(&ci);
58*7c478bd9Sstevel@tonic-gate 	promif_postprom();
59*7c478bd9Sstevel@tonic-gate 
60*7c478bd9Sstevel@tonic-gate 	if (rv != 0)
61*7c478bd9Sstevel@tonic-gate 		return (rv);		/* Service "call-method" failed */
62*7c478bd9Sstevel@tonic-gate 	if (ci[8] != 0)			/* Res1: catch-result */
63*7c478bd9Sstevel@tonic-gate 		return (-1);		/* Method "SUNW,retain" failed */
64*7c478bd9Sstevel@tonic-gate 
65*7c478bd9Sstevel@tonic-gate 	*physaddr = p1275_cells2ull(ci[9], ci[10]);
66*7c478bd9Sstevel@tonic-gate 					/* Res3: base.hi, Res4: base.lo */
67*7c478bd9Sstevel@tonic-gate 	return (0);
68*7c478bd9Sstevel@tonic-gate }
69