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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [libchip/] [serial/] [mc68681_reg.c] - Blame information for rev 593

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/*
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 *  This file contains a typical set of register access routines which may be
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 *  used with the mc68681 chip if accesses to the chip are as follows:
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 *
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 *    + registers are accessed as bytes
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 *    + registers are only byte-aligned (no address gaps)
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 *
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 *  COPYRIGHT (c) 1989-1997.
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 *  On-Line Applications Research Corporation (OAR).
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 *  Copyright assigned to U.S. Government, 1994.
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 *
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 *  The license and distribution terms for this file may be
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 *  found in the file LICENSE in this distribution or at
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 *  http://www.OARcorp.com/rtems/license.html.
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 *
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 *  $Id: mc68681_reg.c,v 1.2 2001-09-27 12:01:42 chris Exp $
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 */
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#include <rtems.h>
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#ifndef _MC68681_MULTIPLIER
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#define _MC68681_MULTIPLIER 1
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#define _MC68681_NAME(_X) _X
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#define _MC68681_TYPE unsigned8
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#endif
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#define CALCULATE_REGISTER_ADDRESS( _base, _reg ) \
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  (_MC68681_TYPE *)((_base) + ((_reg) * _MC68681_MULTIPLIER ))
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/*
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 *  MC68681 Get Register Routine
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 */
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unsigned8 _MC68681_NAME(mc68681_get_register)(
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  unsigned32  ulCtrlPort,
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  unsigned8   ucRegNum
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)
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{
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  _MC68681_TYPE *port;
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  port = CALCULATE_REGISTER_ADDRESS( ulCtrlPort, ucRegNum );
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  return *port;
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}
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/*
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 *  MC68681 Set Register Routine
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 */
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void  _MC68681_NAME(mc68681_set_register)(
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  unsigned32  ulCtrlPort,
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  unsigned8   ucRegNum,
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  unsigned8   ucData
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)
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{
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  _MC68681_TYPE *port;
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  port = CALCULATE_REGISTER_ADDRESS( ulCtrlPort, ucRegNum );
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  *port = ucData;
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}

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