Mercurial > ecos
annotate packages/hal/h8300/arch/current/include/hal_io.h @ 210:d2c90368aeef
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| author | jlarmour |
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| date | Thu, 23 May 2002 22:59:51 +0000 |
| parents | e0c0827131d1 |
| children | f58b62f3c85d |
| rev | line source |
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1 #ifndef CYGONCE_HAL_HAL_IO_H |
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2 #define CYGONCE_HAL_HAL_IO_H |
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3 |
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4 //============================================================================= |
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5 // |
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6 // hal_io.h |
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7 // |
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8 // HAL device IO register support. |
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9 // |
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10 //============================================================================= |
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11 //####ECOSGPLCOPYRIGHTBEGIN#### |
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12 // ------------------------------------------- |
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13 // This file is part of eCos, the Embedded Configurable Operating System. |
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14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. |
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15 // |
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16 // eCos is free software; you can redistribute it and/or modify it under |
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17 // the terms of the GNU General Public License as published by the Free |
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18 // Software Foundation; either version 2 or (at your option) any later version. |
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19 // |
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20 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY |
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21 // WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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22 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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23 // for more details. |
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24 // |
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25 // You should have received a copy of the GNU General Public License along |
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26 // with eCos; if not, write to the Free Software Foundation, Inc., |
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27 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
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28 // |
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29 // As a special exception, if other files instantiate templates or use macros |
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30 // or inline functions from this file, or you compile this file and link it |
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31 // with other works to produce a work based on this file, this file does not |
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32 // by itself cause the resulting work to be covered by the GNU General Public |
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33 // License. However the source code for this file must still be made available |
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34 // in accordance with section (3) of the GNU General Public License. |
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35 // |
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36 // This exception does not invalidate any other reasons why a work based on |
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37 // this file might be covered by the GNU General Public License. |
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38 // |
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39 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. |
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40 // at http://sources.redhat.com/ecos/ecos-license/ |
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41 // ------------------------------------------- |
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42 //####ECOSGPLCOPYRIGHTEND#### |
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43 //============================================================================= |
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44 //#####DESCRIPTIONBEGIN#### |
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45 // |
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46 // Author(s): yoshinori sato |
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47 // Contributors: yoshinori sato |
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48 // Date: 2002-02-13 |
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49 // Purpose: Define IO register support |
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50 // Description: The macros defined here provide the HAL APIs for handling |
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51 // device IO control registers. |
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52 // |
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53 // Usage: |
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54 // #include <cyg/hal/hal_io.h> |
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55 // ... |
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56 // |
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57 // |
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58 //####DESCRIPTIONEND#### |
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59 // |
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60 //============================================================================= |
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61 |
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62 #include <cyg/infra/cyg_type.h> |
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63 |
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64 //----------------------------------------------------------------------------- |
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65 // IO Register address. |
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66 // This type is for recording the address of an IO register. |
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67 |
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68 typedef volatile CYG_ADDRWORD HAL_IO_REGISTER; |
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69 |
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70 //----------------------------------------------------------------------------- |
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71 // BYTE Register access. |
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72 // Individual and vectorized access to 8 bit registers. |
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73 |
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74 #define HAL_READ_UINT8( _register_, _value_ ) \ |
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75 ((_value_) = *((volatile CYG_BYTE *)(_register_))) |
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76 |
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77 #define HAL_WRITE_UINT8( _register_, _value_ ) \ |
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78 (*((volatile CYG_BYTE *)(_register_)) = (_value_)) |
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79 |
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80 #define HAL_READ_UINT8_VECTOR( _register_, _buf_, _count_, _step_ ) \ |
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81 { \ |
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82 cyg_count32 _i_,_j_; \ |
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83 for( _i_ = 0, _j_ = 0; _i_ < (_count_); _i_++, _j_ += (_step_)) \ |
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84 (_buf_)[_i_] = ((volatile CYG_BYTE *)(_register_))[_j_]; \ |
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85 } |
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86 |
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87 #define HAL_WRITE_UINT8_VECTOR( _register_, _buf_, _count_, _step_ ) \ |
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88 { \ |
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89 cyg_count32 _i_,_j_; \ |
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90 for( _i_ = 0, _j_ = 0; _i_ < (_count_); _i_++, _j_ += (_step_)) \ |
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91 ((volatile CYG_BYTE *)(_register_))[_j_] = (_buf_)[_i_]; \ |
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92 } |
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93 |
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94 |
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95 //----------------------------------------------------------------------------- |
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96 // 16 bit access. |
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97 // Individual and vectorized access to 16 bit registers. |
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98 |
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99 #define HAL_READ_UINT16( _register_, _value_ ) \ |
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100 ((_value_) = *((volatile CYG_WORD16 *)(_register_))) |
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101 |
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102 #define HAL_WRITE_UINT16( _register_, _value_ ) \ |
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103 (*((volatile CYG_WORD16 *)(_register_)) = (_value_)) |
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104 |
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105 #define HAL_READ_UINT16_VECTOR( _register_, _buf_, _count_, _step_ ) \ |
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106 { \ |
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107 cyg_count32 _i_,_j_; \ |
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108 for( _i_ = 0, _j_ = 0; _i_ < (_count_); _i_++, _j_ += (_step_)) \ |
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109 (_buf_)[_i_] = ((volatile CYG_WORD16 *)(_register_))[_j_]; \ |
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110 } |
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111 |
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112 #define HAL_WRITE_UINT16_VECTOR( _register_, _buf_, _count_, _step_ ) \ |
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113 { \ |
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114 cyg_count32 _i_,_j_; \ |
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115 for( _i_ = 0, _j_ = 0; _i_ < (_count_); _i_++, _j_ += (_step_)) \ |
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116 ((volatile CYG_WORD16 *)(_register_))[_j_] = (_buf_)[_i_]; \ |
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117 } |
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118 |
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119 //----------------------------------------------------------------------------- |
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120 // 32 bit access. |
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121 // Individual and vectorized access to 32 bit registers. |
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122 |
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123 #define HAL_READ_UINT32( _register_, _value_ ) \ |
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124 ((_value_) = *((volatile CYG_WORD32 *)(_register_))) |
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125 |
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126 #define HAL_WRITE_UINT32( _register_, _value_ ) \ |
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127 (*((volatile CYG_WORD32 *)(_register_)) = (_value_)) |
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128 |
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129 #define HAL_READ_UINT32_VECTOR( _register_, _buf_, _count_, _step_ ) \ |
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130 { \ |
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131 cyg_count32 _i_,_j_; \ |
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132 for( _i_ = 0, _j_ = 0; _i_ < (_count_); _i_++, _j_ += (_step_)) \ |
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133 (_buf_)[_i_] = ((volatile CYG_WORD32 *)(_register_))[_j_]; \ |
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134 } |
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135 |
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136 #define HAL_WRITE_UINT32_VECTOR( _register_, _buf_, _count_, _step_ ) \ |
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137 { \ |
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138 cyg_count32 _i_,_j_; \ |
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139 for( _i_ = 0, _j_ = 0; _i_ < (_count_); _i_++, _j_ += (_step_)) \ |
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140 ((volatile CYG_WORD32 *)(_register_))[_j_] = (_buf_)[_i_]; \ |
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141 } |
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142 |
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143 //----------------------------------------------------------------------------- |
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144 #endif // ifndef CYGONCE_HAL_HAL_IO_H |
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145 // End of hal_io.h |
