Subversion Repositories openrisc_2011-10-31

/*

 *  This file contains a typical set of register access routines which may be

 *  used with the icm7170 chip if accesses to the chip are as follows:

 *

 *    + registers are accessed as bytes

 *    + registers are only byte-aligned (no address gaps)

 *

 *  COPYRIGHT (c) 1989-1997.

 *  On-Line Applications Research Corporation (OAR).

 *  Copyright assigned to U.S. Government, 1994.

 *

 *  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: icm7170_reg.c,v 1.2 2001-09-27 12:01:42 chris Exp $

 */

#include <rtems.h>

#ifndef _ICM7170_MULTIPLIER

#define _ICM7170_MULTIPLIER 1

#define _ICM7170_NAME(_X) _X

#define _ICM7170_TYPE unsigned8

#endif

#define CALCULATE_REGISTER_ADDRESS( _base, _reg ) \

  (_ICM7170_TYPE *)((_base) + ((_reg) * _ICM7170_MULTIPLIER ))

/*

 *  ICM7170 Get Register Routine

 */

unsigned32 _ICM7170_NAME(icm7170_get_register)(

  unsigned32  ulCtrlPort,

  unsigned8   ucRegNum

)

{

  _ICM7170_TYPE *port;

  port = CALCULATE_REGISTER_ADDRESS( ulCtrlPort, ucRegNum );

  return *port;

}

/*

 *  ICM7170 Set Register Routine

 */

void  _ICM7170_NAME(icm7170_set_register)(

  unsigned32  ulCtrlPort,

  unsigned8   ucRegNum,

  unsigned32  ucData

)

{

  _ICM7170_TYPE *port;

  port = CALCULATE_REGISTER_ADDRESS( ulCtrlPort, ucRegNum );

  *port = ucData;

}