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annotate packages/io/common/current/include/devtab.h @ 3292:7f8e529b4d82 default tip

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Fix FREESCALE_EDMA_NBYTES_MLOFFYES_MLOFF() so it works with negative offsets.
author vae
date Wed, 29 Apr 2015 23:31:48 +0000
parents 74dbf4c3f2e1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #ifndef CYGONCE_IO_DEVTAB_H
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2 #define CYGONCE_IO_DEVTAB_H
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3 // ====================================================================
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4 //
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5 // devtab.h
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6 //
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7 // Device I/O Table
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8 //
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9 // ====================================================================
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10 // ####ECOSGPLCOPYRIGHTBEGIN####
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11 // -------------------------------------------
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12 // This file is part of eCos, the Embedded Configurable Operating System.
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13 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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14 //
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15 // eCos is free software; you can redistribute it and/or modify it under
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16 // the terms of the GNU General Public License as published by the Free
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17 // Software Foundation; either version 2 or (at your option) any later
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18 // version.
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19 //
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20 // eCos is distributed in the hope that it will be useful, but WITHOUT
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21 // ANY 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
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26 // along with eCos; if not, write to the Free Software Foundation, Inc.,
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27 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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28 //
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29 // As a special exception, if other files instantiate templates or use
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30 // macros or inline functions from this file, or you compile this file
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31 // and link it with other works to produce a work based on this file,
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32 // this file does not by itself cause the resulting work to be covered by
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33 // the GNU General Public License. However the source code for this file
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34 // must still be made available in accordance with section (3) of the GNU
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35 // General Public License v2.
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36 //
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37 // This exception does not invalidate any other reasons why a work based
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38 // on this file might be covered by the GNU General Public License.
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39 // -------------------------------------------
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40 // ####ECOSGPLCOPYRIGHTEND####
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41 // ====================================================================
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42 //#####DESCRIPTIONBEGIN####
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43 //
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44 // Author(s): gthomas
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45 // Contributors: gthomas
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46 // Date: 1999-02-04
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47 // Purpose: Describe low level I/O interfaces.
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48 // Description:
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49 //
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50 //####DESCRIPTIONEND####
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51 //
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52 // ====================================================================
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53
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54 // Private include file. This file should only be used by device
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55 // drivers, not application code.
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56
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57 #include <pkgconf/system.h>
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58 #include <cyg/io/io.h>
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59 #include <cyg/hal/drv_api.h>
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60 #include <cyg/hal/hal_tables.h>
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61
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62 // Set of functions which handle top level I/O functions
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63 typedef struct {
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64 Cyg_ErrNo (*write)(cyg_io_handle_t handle,
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65 const void *buf,
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66 cyg_uint32 *len);
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67 Cyg_ErrNo (*read)(cyg_io_handle_t handle,
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68 void *buf,
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69 cyg_uint32 *len);
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70 Cyg_ErrNo (*bwrite)(cyg_io_handle_t handle,
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71 const void *buf,
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72 cyg_uint32 *len, // in blocks
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73 cyg_uint32 pos); // in blocks
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74 Cyg_ErrNo (*bread)(cyg_io_handle_t handle,
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75 void *buf,
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76 cyg_uint32 *len, // in blocks
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77 cyg_uint32 pos); // in blocks
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78 cyg_bool (*select)(cyg_io_handle_t handle,
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79 cyg_uint32 which,
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80 CYG_ADDRWORD info);
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81 Cyg_ErrNo (*get_config)(cyg_io_handle_t handle,
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82 cyg_uint32 key,
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83 void *buf,
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84 cyg_uint32 *len);
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85 Cyg_ErrNo (*set_config)(cyg_io_handle_t handle,
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86 cyg_uint32 key,
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87 const void *buf,
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88 cyg_uint32 *len);
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89 } cyg_devio_table_t;
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90
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91
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92 // Default functions
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93
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94 __externC Cyg_ErrNo cyg_devio_cwrite(cyg_io_handle_t handle,
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95 const void *buf, cyg_uint32 *len);
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96 __externC Cyg_ErrNo cyg_devio_cread(cyg_io_handle_t handle,
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97 void *buf, cyg_uint32 *len);
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98 __externC Cyg_ErrNo cyg_devio_bwrite(cyg_io_handle_t handle,
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99 const void *buf, cyg_uint32 *len,
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100 cyg_uint32 pos);
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101 __externC Cyg_ErrNo cyg_devio_bread(cyg_io_handle_t handle,
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102 void *buf, cyg_uint32 *len,
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103 cyg_uint32 pos);
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104
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105 __externC Cyg_ErrNo cyg_devio_select(cyg_io_handle_t handle,
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106 cyg_uint32 which,
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107 CYG_ADDRWORD info);
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108
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109 __externC Cyg_ErrNo cyg_devio_get_config(cyg_io_handle_t handle,
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110 cyg_uint32 key,
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111 void* buf,
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112 cyg_uint32* len);
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113
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114 __externC Cyg_ErrNo cyg_devio_set_config(cyg_io_handle_t handle,
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115 cyg_uint32 key,
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116 void* buf,
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117 cyg_uint32* len);
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118
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119 // Initialization macros
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120
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121 #define CHAR_DEVIO_TABLE(_l,_write,_read,_select,_get_config,_set_config) \
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122 cyg_devio_table_t _l = { \
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123 _write, \
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124 _read, \
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125 cyg_devio_bwrite, \
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126 cyg_devio_bread, \
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127 _select, \
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128 _get_config, \
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129 _set_config, \
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130 };
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131
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132 // Note: _bwrite and _bread pass len and pos in terms of blocks, not
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133 // bytes.
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134 #define BLOCK_DEVIO_TABLE(_l,_bwrite,_bread,_select,_get_config,_set_config) \
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135 cyg_devio_table_t _l = { \
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136 cyg_devio_cwrite, \
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137 cyg_devio_cread, \
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138 _bwrite, \
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139 _bread, \
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140 _select, \
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141 _get_config, \
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142 _set_config, \
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143 };
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144
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145 #define DEVIO_TABLE(_l,_write,_read,_select,_get_config,_set_config) \
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146 CHAR_DEVIO_TABLE(_l,_write,_read,_select,_get_config,_set_config)
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147
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148 typedef struct cyg_devtab_entry {
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149 const char *name;
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150 const char *dep_name;
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151 cyg_devio_table_t *handlers;
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152 bool (*init)(struct cyg_devtab_entry *tab);
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153 Cyg_ErrNo (*lookup)(struct cyg_devtab_entry **tab,
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154 struct cyg_devtab_entry *sub_tab,
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155 const char *name);
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156 void *priv;
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157 unsigned long status;
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158 } CYG_HAL_TABLE_TYPE cyg_devtab_entry_t;
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159
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160 #define CYG_DEVTAB_STATUS_AVAIL 0x0001
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161 #define CYG_DEVTAB_STATUS_CHAR 0x1000
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162 #define CYG_DEVTAB_STATUS_BLOCK 0x2000
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163
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164 extern cyg_devtab_entry_t __DEVTAB__[], __DEVTAB_END__;
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165
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166 #define CHAR_DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \
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167 cyg_devtab_entry_t _l CYG_HAL_TABLE_ENTRY(devtab) = { \
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168 _name, \
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169 _dep_name, \
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170 _handlers, \
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171 _init, \
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172 _lookup, \
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173 _priv, \
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174 CYG_DEVTAB_STATUS_CHAR \
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175 };
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176
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177 #define BLOCK_DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \
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178 cyg_devtab_entry_t _l CYG_HAL_TABLE_ENTRY(devtab) = { \
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179 _name, \
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180 _dep_name, \
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181 _handlers, \
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182 _init, \
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183 _lookup, \
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184 _priv, \
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185 CYG_DEVTAB_STATUS_BLOCK \
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186 };
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187
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188 #define DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \
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189 CHAR_DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv)
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190
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191
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192 #define DEVTAB_ENTRY_NO_INIT(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \
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193 cyg_devtab_entry_t _l = { \
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194 _name, \
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195 _dep_name, \
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196 _handlers, \
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197 _init, \
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198 _lookup, \
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199 _priv, \
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200 CYG_DEVTAB_STATUS_CHAR \
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201 };
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202
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203 #endif // CYGONCE_IO_DEVTAB_H