Subversion Repositories openrisc_2011-10-31

/*  Shm_Convert_address

 *

 *  This routine takes into account the peculiar short VME address

 *  of the CVME961 board.  The CVME961 maps short address space

 *  0xffffxxxx to 0xb400xxxx.

 *

 *  Input parameters:

 *    address - address to convert

 *

 *  Output parameters:

 *    returns - converted address

 *

 *  COPYRIGHT (c) 1989-1999.

 *  On-Line Applications Research Corporation (OAR).

 *

 *  The license and distribution terms for this file may be

 *  found in the file LICENSE in this distribution or at

 *  http://www.OARcorp.com/rtems/license.html.

 *

 *  $Id: addrconv.c,v 1.2 2001-09-27 11:59:56 chris Exp $

 */

#include <rtems.h>

#include <bsp.h>

#include "shm_driver.h"

void *Shm_Convert_address(

  void *address

)

{

  rtems_unsigned32 workaddr = (rtems_unsigned32) address;

  if ( workaddr >= 0xffff0000 )

    workaddr = (workaddr & 0xffff) | 0xb4000000;

  return ( (rtems_unsigned32 *)workaddr );

}