1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Generic console driver implementation. |
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5 | */ |
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6 | |
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7 | /* |
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8 | * Copyright (c) 2011 embedded brains GmbH. All rights reserved. |
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9 | * |
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10 | * embedded brains GmbH |
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11 | * Obere Lagerstr. 30 |
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12 | * 82178 Puchheim |
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13 | * Germany |
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14 | * <rtems@embedded-brains.de> |
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15 | * |
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16 | * The license and distribution terms for this file may be |
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17 | * found in the file LICENSE in this distribution or at |
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18 | * http://www.rtems.org/license/LICENSE. |
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19 | */ |
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20 | |
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21 | #include <sys/cdefs.h> |
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22 | |
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23 | #include <bsp.h> |
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24 | #include <bsp/console-generic.h> |
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25 | #include <bsp/fatal.h> |
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26 | |
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27 | #include <rtems/bspIo.h> |
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28 | #include <rtems/console.h> |
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29 | |
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30 | static const struct termios console_generic_termios = { |
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31 | .c_cflag = CS8 | CREAD | CLOCAL | __CONCAT(B, BSP_DEFAULT_BAUD_RATE) |
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32 | }; |
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33 | |
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34 | static void console_generic_char_out(char c) |
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35 | { |
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36 | int minor = (int) console_generic_minor; |
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37 | const console_generic_callbacks *cb = |
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38 | console_generic_info_table [minor].callbacks; |
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39 | |
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40 | if (c == '\n') { |
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41 | (*cb->poll_write)(minor, '\r'); |
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42 | } |
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43 | |
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44 | (*cb->poll_write)(minor, c); |
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45 | } |
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46 | |
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47 | static int console_generic_char_in(void) |
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48 | { |
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49 | int minor = (int) console_generic_minor; |
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50 | const console_generic_callbacks *cb = |
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51 | console_generic_info_table [minor].callbacks; |
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52 | |
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53 | return (*cb->poll_read)(minor); |
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54 | } |
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55 | |
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56 | static void console_generic_char_out_do_init(void) |
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57 | { |
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58 | int minor = (int) console_generic_minor; |
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59 | const console_generic_callbacks *cb = |
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60 | console_generic_info_table [minor].callbacks; |
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61 | const struct termios *term = &console_generic_termios; |
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62 | |
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63 | BSP_output_char = console_generic_char_out; |
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64 | (*cb->termios_callbacks.setAttributes)(minor, term); |
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65 | } |
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66 | |
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67 | static void console_generic_char_out_init(char c) |
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68 | { |
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69 | console_generic_char_out_do_init(); |
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70 | console_generic_char_out(c); |
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71 | } |
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72 | |
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73 | rtems_device_driver console_initialize( |
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74 | rtems_device_major_number major, |
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75 | rtems_device_minor_number minor, |
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76 | void *arg |
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77 | ) |
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78 | { |
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79 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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80 | const console_generic_info *info_table = console_generic_info_table; |
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81 | rtems_device_minor_number count = console_generic_info_count; |
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82 | rtems_device_minor_number console = console_generic_minor; |
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83 | |
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84 | if (count <= 0) { |
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85 | bsp_fatal(MPC55XX_FATAL_CONSOLE_GENERIC_COUNT); |
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86 | } |
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87 | |
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88 | rtems_termios_initialize(); |
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89 | |
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90 | for (minor = 0; minor < count; ++minor) { |
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91 | const console_generic_info *info = info_table + minor; |
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92 | |
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93 | sc = rtems_io_register_name(info->device_path, major, minor); |
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94 | if (sc != RTEMS_SUCCESSFUL) { |
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95 | bsp_fatal(MPC55XX_FATAL_CONSOLE_GENERIC_REGISTER); |
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96 | } |
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97 | } |
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98 | |
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99 | sc = rtems_io_register_name(CONSOLE_DEVICE_NAME, major, console); |
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100 | if (sc != RTEMS_SUCCESSFUL) { |
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101 | bsp_fatal(MPC55XX_FATAL_CONSOLE_GENERIC_REGISTER_CONSOLE); |
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102 | } |
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103 | |
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104 | console_generic_char_out_do_init(); |
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105 | |
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106 | return sc; |
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107 | } |
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108 | |
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109 | rtems_device_driver console_open( |
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110 | rtems_device_major_number major, |
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111 | rtems_device_minor_number minor, |
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112 | void *arg |
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113 | ) |
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114 | { |
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115 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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116 | rtems_device_minor_number count = console_generic_info_count; |
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117 | |
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118 | if (minor < count) { |
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119 | const console_generic_info *info = &console_generic_info_table [minor]; |
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120 | |
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121 | sc = rtems_termios_open( |
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122 | major, |
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123 | minor, |
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124 | arg, |
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125 | &info->callbacks->termios_callbacks |
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126 | ); |
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127 | } else { |
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128 | sc = RTEMS_INVALID_ID; |
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129 | } |
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130 | |
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131 | return sc; |
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132 | } |
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133 | |
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134 | rtems_device_driver console_close( |
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135 | rtems_device_major_number major, |
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136 | rtems_device_minor_number minor, |
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137 | void *arg |
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138 | ) |
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139 | { |
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140 | return rtems_termios_close(arg); |
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141 | } |
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142 | |
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143 | rtems_device_driver console_read( |
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144 | rtems_device_major_number major, |
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145 | rtems_device_minor_number minor, |
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146 | void *arg |
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147 | ) |
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148 | { |
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149 | return rtems_termios_read(arg); |
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150 | } |
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151 | |
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152 | rtems_device_driver console_write( |
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153 | rtems_device_major_number major, |
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154 | rtems_device_minor_number minor, |
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155 | void *arg |
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156 | ) |
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157 | { |
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158 | return rtems_termios_write(arg); |
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159 | } |
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160 | |
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161 | rtems_device_driver console_control( |
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162 | rtems_device_major_number major, |
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163 | rtems_device_minor_number minor, |
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164 | void *arg |
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165 | ) |
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166 | { |
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167 | return rtems_termios_ioctl(arg); |
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168 | } |
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169 | |
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170 | BSP_output_char_function_type BSP_output_char = console_generic_char_out_init; |
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171 | |
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172 | BSP_polling_getchar_function_type BSP_poll_char = console_generic_char_in; |
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