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#if defined(lint)
30#include <sys/types.h>
31#else
32#include "assym.h"
33#endif /* lint */
34
35#include <sys/asm_linkage.h>
36#include <sys/param.h>
37#include <sys/privregs.h>
38#include <sys/machasi.h>
39#include <sys/mmu.h>
40#include <sys/machthread.h>
41#include <sys/pte.h>
42#include <sys/stack.h>
43#include <sys/vis.h>
44#include <sys/param.h>
45#include <sys/errno.h>
46#include <sys/vtrace.h>
47#include <sys/clock.h>
48#include <sys/asi.h>
49#include <sys/fsr.h>
50#include <sys/cmpregs.h>
51#include <sys/cheetahregs.h>
52
53#if defined(lint)
54
55/* ARGSUSED */
56uint64_t
57lddmcdecode(uint64_t physaddr)
58{
59	return (0x0ull);
60}
61
62#else /* !lint */
63
64!
65! Load the mc_decode reg for this CPU.
66!
67
68	ENTRY(lddmcdecode)
69	rdpr    %pstate, %o4
70	andn    %o4, PSTATE_IE | PSTATE_AM, %o5
71	wrpr    %o5, 0, %pstate			! clear IE, AM bits
72	ldxa    [%o0]ASI_MC_DECODE, %o0
73	retl
74	wrpr    %g0, %o4, %pstate		! restore pstate value
75	SET_SIZE(lddmcdecode)
76
77#endif /* lint */
78
79