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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* This file contains a typical set of register access routines which may be
* used with the mc68681 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).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <rtems.h>
#include <libchip/serial.h>
#include <libchip/mc68681.h>
#ifndef _MC68681_MULTIPLIER
#define _MC68681_MULTIPLIER 1
#define _MC68681_NAME(_X) _X
#define _MC68681_TYPE uint8_t
#endif
#define CALCULATE_REGISTER_ADDRESS( _base, _reg ) \
(_MC68681_TYPE *)((_base) + ((_reg) * _MC68681_MULTIPLIER ))
/*
* MC68681 Get Register Routine
*/
uint8_t _MC68681_NAME(mc68681_get_register)(
uintptr_t ulCtrlPort,
uint8_t ucRegNum
)
{
_MC68681_TYPE *port;
port = CALCULATE_REGISTER_ADDRESS( ulCtrlPort, ucRegNum );
return *port;
}
/*
* MC68681 Set Register Routine
*/
void _MC68681_NAME(mc68681_set_register)(
uintptr_t ulCtrlPort,
uint8_t ucRegNum,
uint8_t ucData
)
{
_MC68681_TYPE *port;
port = CALCULATE_REGISTER_ADDRESS( ulCtrlPort, ucRegNum );
*port = ucData;
}
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