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) 2007 by Sun Microsystems, Inc.
24 */
25
26#pragma ident	"%Z%%M%	%I%	%E% SMI"
27
28/*
29 * General machine architecture & implementation specific
30 * assembly language routines.
31 */
32#if defined(lint)
33#include <sys/types.h>
34#include <sys/machsystm.h>
35#include <sys/t_lock.h>
36#else   /* lint */
37#include "assym.h"
38#endif  /* lint */
39
40#include <sys/asm_linkage.h>
41#include <sys/eeprom.h>
42#include <sys/param.h>
43#include <sys/async.h>
44#include <sys/intreg.h>
45#include <sys/machthread.h>
46#include <sys/iocache.h>
47#include <sys/privregs.h>
48#include <sys/archsystm.h>
49
50#if defined(lint)
51
52/*ARGSUSED*/
53void
54memscrub_read(caddr_t vaddr, u_int blks)
55{}
56
57#else	/* lint */
58
59	!
60	! void	memscrub_read(caddr_t src, u_int blks)
61	!
62
63	.seg ".text"
64	.align	4
65
66	ENTRY(memscrub_read)
67	srl	%o1, 0, %o1			! clear upper word of blk count
68        rd	%fprs, %o2			! get the status of fp
69	wr	%g0, FPRS_FEF, %fprs		! enable fp
70
711:
72	prefetch [%o0 + 8*64], 0
73	ldda	[%o0]ASI_BLK_P, %d0
74	add	%o0, 64, %o0
75	prefetch [%o0 + 8*64], 0
76	ldda	[%o0]ASI_BLK_P, %d16
77	add	%o0, 64, %o0
78	prefetch [%o0 + 8*64], 0
79	ldda	[%o0]ASI_BLK_P, %d32
80	add	%o0, 64, %o0
81	prefetch [%o0 + 8*64], 0
82	ldda	[%o0]ASI_BLK_P, %d48
83	dec	%o1
84	brnz,a	%o1, 1b
85	add	%o0, 64, %o0
86
87	retl
88	wr	%o2, 0, %fprs			! restore fprs (disabled)
89	SET_SIZE(memscrub_read)
90
91#endif	/* lint */
92