Mercurial > flash_v2
annotate packages/io/common/current/include/devtab.h @ 115:6ed91473a1cd ecos-sw-2000-08-21
Merge from eCos master repository on 2000-08-21-22:40:54-BST
| author | jlarmour |
|---|---|
| date | Fri, 25 Aug 2000 17:32:38 +0000 |
| parents | bf00f99aec69 |
| children | 6bd9d475ed4b |
| rev | line source |
|---|---|
| 2 | 1 #ifndef CYGONCE_IO_DEVTAB_H |
| 2 #define CYGONCE_IO_DEVTAB_H | |
| 3 // ==================================================================== | |
| 4 // | |
| 5 // devtab.h | |
| 6 // | |
| 7 // Device I/O Table | |
| 8 // | |
| 9 // ==================================================================== | |
| 10 //####COPYRIGHTBEGIN#### | |
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11 // |
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12 // ------------------------------------------- |
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13 // The contents of this file are subject to the Red Hat eCos Public License |
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14 // Version 1.1 (the "License"); you may not use this file except in |
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15 // compliance with the License. You may obtain a copy of the License at |
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16 // http://www.redhat.com/ |
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17 // |
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18 // Software distributed under the License is distributed on an "AS IS" |
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19 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the |
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20 // License for the specific language governing rights and limitations under |
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21 // the License. |
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22 // |
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23 // The Original Code is eCos - Embedded Configurable Operating System, |
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24 // released September 30, 1998. |
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25 // |
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26 // The Initial Developer of the Original Code is Red Hat. |
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27 // Portions created by Red Hat are |
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28 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc. |
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29 // All Rights Reserved. |
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30 // ------------------------------------------- |
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31 // |
| 2 | 32 //####COPYRIGHTEND#### |
| 33 // ==================================================================== | |
| 34 //#####DESCRIPTIONBEGIN#### | |
| 35 // | |
| 36 // Author(s): gthomas | |
| 37 // Contributors: gthomas | |
| 38 // Date: 1999-02-04 | |
| 39 // Purpose: Describe low level I/O interfaces. | |
| 40 // Description: | |
| 41 // | |
| 42 //####DESCRIPTIONEND#### | |
| 43 // | |
| 44 // ==================================================================== | |
| 45 | |
| 46 // Private include file. This file should only be used by device | |
| 47 // drivers, not application code. | |
| 48 | |
| 49 #include <pkgconf/system.h> | |
| 50 #include <cyg/io/io.h> | |
| 51 #include <cyg/hal/drv_api.h> | |
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52 #include <cyg/hal/hal_tables.h> |
| 2 | 53 |
| 54 // Set of functions which handle top level I/O functions | |
| 55 typedef struct { | |
| 56 Cyg_ErrNo (*write)(cyg_io_handle_t handle, | |
| 57 const void *buf, | |
| 58 cyg_uint32 *len); | |
| 59 Cyg_ErrNo (*read)(cyg_io_handle_t handle, | |
| 60 void *buf, | |
| 61 cyg_uint32 *len); | |
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62 Cyg_ErrNo (*bwrite)(cyg_io_handle_t handle, |
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63 const void *buf, |
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64 cyg_uint32 *len, |
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65 cyg_uint32 pos); |
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66 Cyg_ErrNo (*bread)(cyg_io_handle_t handle, |
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67 void *buf, |
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68 cyg_uint32 *len, |
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69 cyg_uint32 pos); |
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70 cyg_bool (*select)(cyg_io_handle_t handle, |
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71 cyg_uint32 which, |
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72 CYG_ADDRWORD info); |
| 2 | 73 Cyg_ErrNo (*get_config)(cyg_io_handle_t handle, |
| 74 cyg_uint32 key, | |
| 75 void *buf, | |
| 76 cyg_uint32 *len); | |
| 77 Cyg_ErrNo (*set_config)(cyg_io_handle_t handle, | |
| 78 cyg_uint32 key, | |
| 79 const void *buf, | |
| 80 cyg_uint32 *len); | |
| 81 } cyg_devio_table_t; | |
| 82 | |
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83 |
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84 // Default functions |
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85 |
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86 __externC Cyg_ErrNo cyg_devio_cwrite(cyg_io_handle_t handle, |
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87 const void *buf, cyg_uint32 *len); |
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88 __externC Cyg_ErrNo cyg_devio_cread(cyg_io_handle_t handle, |
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89 void *buf, cyg_uint32 *len); |
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90 __externC Cyg_ErrNo cyg_devio_bwrite(cyg_io_handle_t handle, |
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91 const void *buf, cyg_uint32 *len, |
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92 cyg_uint32 pos); |
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93 __externC Cyg_ErrNo cyg_devio_bread(cyg_io_handle_t handle, |
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94 void *buf, cyg_uint32 *len, |
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95 cyg_uint32 pos); |
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96 |
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97 |
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98 // Initialization macros |
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99 |
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100 #define CHAR_DEVIO_TABLE(_l,_write,_read,_select,_get_config,_set_config) \ |
| 2 | 101 cyg_devio_table_t _l = { \ |
| 102 _write, \ | |
| 103 _read, \ | |
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104 cyg_devio_bwrite, \ |
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105 cyg_devio_bread, \ |
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106 _select, \ |
| 2 | 107 _get_config, \ |
| 108 _set_config, \ | |
| 109 }; | |
| 110 | |
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111 #define BLOCK_DEVIO_TABLE(_l,_bwrite,_bread,_select,_get_config,_set_config) \ |
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112 cyg_devio_table_t _l = { \ |
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113 cyg_devio_cwrite, \ |
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114 cyg_devio_cread, \ |
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115 _bwrite, \ |
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116 _bread, \ |
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117 _select, \ |
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118 _get_config, \ |
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119 _set_config, \ |
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120 }; |
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121 |
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122 #define DEVIO_TABLE(_l,_write,_read,_select,_get_config,_set_config) \ |
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123 CHAR_DEVIO_TABLE(_l,_write,_read,_select,_get_config,_set_config) |
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124 |
| 2 | 125 typedef struct cyg_devtab_entry { |
| 126 const char *name; | |
| 127 const char *dep_name; | |
| 128 cyg_devio_table_t *handlers; | |
| 129 bool (*init)(struct cyg_devtab_entry *tab); | |
| 130 Cyg_ErrNo (*lookup)(struct cyg_devtab_entry **tab, | |
| 131 struct cyg_devtab_entry *sub_tab, | |
| 132 const char *name); | |
| 133 void *priv; | |
| 134 unsigned long status; | |
| 135 } cyg_devtab_entry_t; | |
| 136 | |
| 137 #define CYG_DEVTAB_STATUS_AVAIL 0x0001 | |
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138 #define CYG_DEVTAB_STATUS_CHAR 0x1000 |
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139 #define CYG_DEVTAB_STATUS_BLOCK 0x2000 |
| 2 | 140 |
| 141 extern cyg_devtab_entry_t __DEVTAB__[], __DEVTAB_END__; | |
| 142 | |
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143 #define CHAR_DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \ |
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144 cyg_devtab_entry_t _l CYG_HAL_TABLE_ENTRY(devtab) = { \ |
| 2 | 145 _name, \ |
| 146 _dep_name, \ | |
| 147 _handlers, \ | |
| 148 _init, \ | |
| 149 _lookup, \ | |
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150 _priv, \ |
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151 CYG_DEVTAB_STATUS_CHAR \ |
| 2 | 152 }; |
| 153 | |
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154 #define BLOCK_DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \ |
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155 cyg_devtab_entry_t _l CYG_HAL_TABLE_ENTRY(devtab) = { \ |
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156 _name, \ |
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157 _dep_name, \ |
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158 _handlers, \ |
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159 _init, \ |
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160 _lookup, \ |
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161 _priv, \ |
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162 CYG_DEVTAB_STATUS_BLOCK \ |
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163 }; |
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164 |
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165 #define DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \ |
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166 CHAR_DEVTAB_ENTRY(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) |
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167 |
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168 |
| 2 | 169 #define DEVTAB_ENTRY_NO_INIT(_l,_name,_dep_name,_handlers,_init,_lookup,_priv) \ |
| 170 cyg_devtab_entry_t _l = { \ | |
| 171 _name, \ | |
| 172 _dep_name, \ | |
| 173 _handlers, \ | |
| 174 _init, \ | |
| 175 _lookup, \ | |
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176 _priv, \ |
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177 CYG_DEVTAB_STATUS_CHAR \ |
| 2 | 178 }; |
| 179 | |
| 180 #endif // CYGONCE_IO_DEVTAB_H |
