usr/src/uts/common/sys/bscbus.h

   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 (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2001-2003 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _SYS_BSCBUS_H
  27 #define _SYS_BSCBUS_H
  28
  29 #pragma ident   "%Z%%M% %I%     %E% SMI"
  30
  31 #ifdef  __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 /*
  36  * The bscbus nexus driver provides the same client interface as the lombus
  37  * nexus driver.
  38  */
  39 #include <sys/lombus.h>
  40
  41 /*
  42  * Register spaces (as lombus.h but spaces now have a channel
  43  * value encoded in it too)
  44  *
  45  *      Space*  Size    Range           Meaning
  46  *              (bits)
  47  *
  48  *      xx00    8       [0 .. 16383]    LOM virtual registers
  49  *      xx01    8       [0]             Watchdog pat (on write)
  50  *      xx02    16      [0]             Async event info (read only)
  51  *      All     32      [-4 .. -12]     Access handle fault info
  52  *      * xx is the channel number.
  53  */
  54
  55 #define LOMBUS_SPACE_TO_REGSET(rsp)     ((rsp) & 0xff)
  56 #define LOMBUS_SPACE_TO_CHANNEL(rsp)    (((rsp) & 0xff00) >> 8)
  57 #define LOMBUS_SPACE(regset, channel)   ((regset) | ((channel) << 8))
  58
  59 #ifdef  __cplusplus
  60 }
  61 #endif
  62
  63 #endif  /* _SYS_BSCBUS_H */