usr/src/uts/sun4u/ml/mc-us3_asm.s

   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 2000,2003 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Assembly code support for Memory Control driver
  27  */
  28
  29 #pragma ident   "%Z%%M% %I%     %E% SMI"
  30
  31 #if !defined(lint)
  32 #include "assym.h"
  33 #include <sys/mc-us3.h>
  34 #endif  /* lint */
  35
  36 #include <sys/asm_linkage.h>
  37
  38 #if defined(lint)
  39
  40 /*
  41  * routine to get value of Memory Control Registers
  42  */
  43 /* ARGSUSED */
  44 uint64_t
  45 get_mcr(int offset)
  46 {
  47         return ((uint64_t)0);
  48 }
  49
  50 #else   /* lint */
  51
  52         ! This routine is to get content of Memory Control Registers
  53         ENTRY(get_mcr)
  54         ! input
  55         ! %i0 is the VA for Memory Control Registers
  56         !
  57         ldxa    [%o0]ASI_MCU_CTRL,      %o0
  58         retl
  59           nop
  60         SET_SIZE(get_mcr)
  61
  62 #endif /* lint */