source: rtems/c/src/lib/libbsp/i960/cvme961/shmsupp/addrconv.c @ ac7d5ef0

4.104.114.84.95
Last change on this file since ac7d5ef0 was ac7d5ef0, checked in by Joel Sherrill <joel.sherrill@…>, on 05/11/95 at 17:39:37

Initial revision

  • Property mode set to 100644
File size: 995 bytes
RevLine 
[ac7d5ef0]1/*  Shm_Convert_address
2 *
3 *  This routine takes into account the peculiar short VME address
4 *  of the CVME961 board.  The CVME961 maps short address space
5 *  0xffffxxxx to 0xb400xxxx.
6 *
7 *  Input parameters:
8 *    address - address to convert
9 *
10 *  Output parameters:
11 *    returns - converted address
12 *
13 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
14 *  On-Line Applications Research Corporation (OAR).
15 *  All rights assigned to U.S. Government, 1994.
16 *
17 *  This material may be reproduced by or for the U.S. Government pursuant
18 *  to the copyright license under the clause at DFARS 252.227-7013.  This
19 *  notice must appear in all copies of this file and its derivatives.
20 *
21 *  $Id$
22 */
23
24#include <rtems.h>
25#include <bsp.h>
26#include "shm.h"
27
28void *Shm_Convert_address(
29  void *address
30)
31{
32  rtems_unsigned32 workaddr = (rtems_unsigned32) address;
33
34  if ( workaddr >= 0xffff0000 )
35    workaddr = (workaddr & 0xffff) | 0xb4000000;
36  return ( (rtems_unsigned32 *)workaddr );
37}
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