4.104.114.84.95
Last change
on this file since f010a5e was
f010a5e,
checked in by Joel Sherrill <joel.sherrill@…>, on 03/02/01 at 18:17:22
|
2001-03-01 Joel Sherrill <joel@…>
- network/cs8900.c, network/cs8900.h, network/sonic.c, network/sonic.h,
rtc/icm7170_reg.c, rtc/icm7170_reg2.c, rtc/icm7170_reg4.c,
rtc/icm7170_reg8.c, rtc/m48t08_reg.c, rtc/m48t08_reg2.c,
rtc/m48t08_reg4.c, rtc/m48t08_reg8.c, serial/mc68681_reg.c,
serial/mc68681_reg2.c, serial/mc68681_reg4.c, serial/mc68681_reg8.c,
serial/z85c30.c, serial/z85c30.h, serial/z85c30_p.h,
serial/z85c30_reg.c: Corrected header.
|
-
Property mode set to
100644
|
File size:
1.3 KB
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Rev | Line | |
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[cce9322] | 1 | /* |
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| 2 | * This file contains a typical set of register access routines which may be |
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| 3 | * used with the mc68681 chip if accesses to the chip are as follows: |
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| 4 | * |
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| 5 | * + registers are accessed as bytes |
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| 6 | * + registers are only byte-aligned (no address gaps) |
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| 7 | * |
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| 8 | * COPYRIGHT (c) 1989-1997. |
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| 9 | * On-Line Applications Research Corporation (OAR). |
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| 10 | * |
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| 11 | * The license and distribution terms for this file may be |
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| 12 | * found in the file LICENSE in this distribution or at |
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| 13 | * http://www.OARcorp.com/rtems/license.html. |
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| 14 | * |
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| 15 | * $Id$ |
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| 16 | */ |
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| 17 | |
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| 18 | #include <rtems.h> |
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| 19 | |
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| 20 | #ifndef _MC68681_MULTIPLIER |
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| 21 | #define _MC68681_MULTIPLIER 1 |
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| 22 | #define _MC68681_NAME(_X) _X |
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| 23 | #define _MC68681_TYPE unsigned8 |
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| 24 | #endif |
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| 25 | |
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| 26 | #define CALCULATE_REGISTER_ADDRESS( _base, _reg ) \ |
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| 27 | (_MC68681_TYPE *)((_base) + ((_reg) * _MC68681_MULTIPLIER )) |
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| 28 | |
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| 29 | /* |
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| 30 | * MC68681 Get Register Routine |
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| 31 | */ |
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| 32 | |
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| 33 | unsigned8 _MC68681_NAME(mc68681_get_register)( |
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| 34 | unsigned32 ulCtrlPort, |
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| 35 | unsigned8 ucRegNum |
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| 36 | ) |
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| 37 | { |
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[849dc107] | 38 | _MC68681_TYPE *port; |
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[cce9322] | 39 | |
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| 40 | port = CALCULATE_REGISTER_ADDRESS( ulCtrlPort, ucRegNum ); |
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| 41 | |
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| 42 | return *port; |
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| 43 | } |
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| 44 | |
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| 45 | /* |
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| 46 | * MC68681 Set Register Routine |
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| 47 | */ |
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| 48 | |
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| 49 | void _MC68681_NAME(mc68681_set_register)( |
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| 50 | unsigned32 ulCtrlPort, |
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| 51 | unsigned8 ucRegNum, |
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| 52 | unsigned8 ucData |
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| 53 | ) |
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| 54 | { |
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[849dc107] | 55 | _MC68681_TYPE *port; |
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[cce9322] | 56 | |
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| 57 | port = CALCULATE_REGISTER_ADDRESS( ulCtrlPort, ucRegNum ); |
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| 58 | |
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| 59 | *port = ucData; |
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| 60 | } |
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