1 | /* |
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2 | * This file contains the generic console driver shell used |
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3 | * by all console drivers using libchip. |
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4 | * |
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5 | * This driver uses the termios pseudo driver. |
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6 | * |
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7 | * COPYRIGHT (c) 1989-1997. |
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8 | * On-Line Applications Research Corporation (OAR). |
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9 | * Copyright assigned to U.S. Government, 1994. |
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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 <bsp.h> |
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19 | #include <rtems/libio.h> |
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20 | #include <stdlib.h> |
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21 | #include <assert.h> |
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22 | #include <termios.h> |
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23 | |
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24 | #include <libchip/serial.h> |
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25 | |
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26 | /* |
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27 | * Configuration Information |
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28 | */ |
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29 | |
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30 | extern console_data Console_Port_Data[]; |
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31 | extern unsigned long Console_Port_Count; |
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32 | extern rtems_device_minor_number Console_Port_Minor; |
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33 | |
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34 | /*PAGE |
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35 | * |
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36 | * console_open |
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37 | * |
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38 | * open a port as a termios console. |
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39 | * |
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40 | */ |
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41 | |
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42 | rtems_device_driver console_open( |
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43 | rtems_device_major_number major, |
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44 | rtems_device_minor_number minor, |
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45 | void * arg |
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46 | ) |
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47 | { |
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48 | rtems_status_code status; |
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49 | rtems_libio_open_close_args_t *args = arg; |
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50 | rtems_libio_ioctl_args_t IoctlArgs; |
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51 | struct termios Termios; |
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52 | rtems_termios_callbacks Callbacks; |
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53 | console_tbl *cptr; |
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54 | |
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55 | /* |
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56 | * Verify the port number is valid. |
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57 | */ |
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58 | if ( minor > Console_Port_Count ) { |
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59 | return RTEMS_INVALID_NUMBER; |
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60 | } |
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61 | |
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62 | /* |
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63 | * Open the port as a termios console driver. |
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64 | */ |
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65 | |
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66 | cptr = &Console_Port_Tbl[minor]; |
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67 | Callbacks.firstOpen = cptr->pDeviceFns->deviceFirstOpen; |
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68 | Callbacks.lastClose = cptr->pDeviceFns->deviceLastClose; |
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69 | Callbacks.pollRead = cptr->pDeviceFns->deviceRead; |
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70 | Callbacks.write = cptr->pDeviceFns->deviceWrite; |
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71 | Callbacks.setAttributes = cptr->pDeviceFns->deviceSetAttributes; |
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72 | Callbacks.stopRemoteTx = cptr->pDeviceFlow->deviceStopRemoteTx; |
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73 | Callbacks.startRemoteTx = cptr->pDeviceFlow->deviceStartRemoteTx; |
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74 | Callbacks.outputUsesInterrupts = cptr->pDeviceFns->deviceOutputUsesInterrupts; |
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75 | |
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76 | /* XXX what about |
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77 | * Console_Port_Tbl[minor].ulMargin, |
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78 | * Console_Port_Tbl[minor].ulHysteresis); |
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79 | */ |
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80 | |
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81 | status = rtems_termios_open ( major, minor, arg, &Callbacks ); |
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82 | Console_Port_Data[minor].termios_data = args->iop->data1; |
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83 | |
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84 | if (minor!=Console_Port_Minor) { |
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85 | /* |
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86 | * If this is not the console we do not want ECHO and |
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87 | * so forth |
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88 | */ |
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89 | IoctlArgs.iop=args->iop; |
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90 | IoctlArgs.command=RTEMS_IO_GET_ATTRIBUTES; |
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91 | IoctlArgs.buffer=&Termios; |
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92 | rtems_termios_ioctl(&IoctlArgs); |
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93 | Termios.c_lflag=ICANON; |
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94 | IoctlArgs.command=RTEMS_IO_SET_ATTRIBUTES; |
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95 | rtems_termios_ioctl(&IoctlArgs); |
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96 | } |
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97 | |
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98 | if ( (args->iop->flags&LIBIO_FLAGS_READ) && |
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99 | Console_Port_Tbl[minor].pDeviceFlow && |
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100 | Console_Port_Tbl[minor].pDeviceFlow->deviceStartRemoteTx) { |
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101 | Console_Port_Tbl[minor].pDeviceFlow->deviceStartRemoteTx(minor); |
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102 | } |
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103 | |
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104 | return status; |
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105 | } |
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106 | |
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107 | /*PAGE |
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108 | * |
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109 | * console_close |
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110 | * |
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111 | * This routine closes a port that has been opened as console. |
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112 | */ |
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113 | |
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114 | rtems_device_driver console_close( |
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115 | rtems_device_major_number major, |
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116 | rtems_device_minor_number minor, |
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117 | void * arg |
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118 | ) |
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119 | { |
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120 | rtems_libio_open_close_args_t *args = arg; |
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121 | |
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122 | if ( (args->iop->flags&LIBIO_FLAGS_READ) && |
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123 | Console_Port_Tbl[minor].pDeviceFlow && |
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124 | Console_Port_Tbl[minor].pDeviceFlow->deviceStopRemoteTx) { |
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125 | Console_Port_Tbl[minor].pDeviceFlow->deviceStopRemoteTx(minor); |
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126 | } |
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127 | |
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128 | return rtems_termios_close (arg); |
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129 | } |
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130 | |
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131 | /*PAGE |
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132 | * |
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133 | * console_read |
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134 | * |
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135 | * This routine uses the termios driver to read a character. |
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136 | */ |
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137 | |
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138 | rtems_device_driver console_read( |
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139 | rtems_device_major_number major, |
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140 | rtems_device_minor_number minor, |
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141 | void * arg |
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142 | ) |
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143 | { |
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144 | return rtems_termios_read (arg); |
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145 | } |
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146 | |
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147 | /*PAGE |
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148 | * |
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149 | * console_write |
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150 | * |
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151 | * this routine uses the termios driver to write a character. |
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152 | */ |
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153 | |
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154 | rtems_device_driver console_write( |
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155 | rtems_device_major_number major, |
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156 | rtems_device_minor_number minor, |
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157 | void * arg |
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158 | ) |
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159 | { |
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160 | return rtems_termios_write (arg); |
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161 | } |
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162 | |
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163 | /*PAGE |
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164 | * |
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165 | * console_control |
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166 | * |
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167 | * this routine uses the termios driver to process io |
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168 | */ |
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169 | |
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170 | rtems_device_driver console_control( |
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171 | rtems_device_major_number major, |
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172 | rtems_device_minor_number minor, |
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173 | void * arg |
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174 | ) |
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175 | { |
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176 | return rtems_termios_ioctl (arg); |
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177 | } |
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178 | |
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179 | /*PAGE |
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180 | * |
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181 | * console_initialize |
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182 | * |
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183 | * Routine called to initialize the console device driver. |
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184 | */ |
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185 | |
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186 | rtems_device_driver console_initialize( |
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187 | rtems_device_major_number major, |
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188 | rtems_device_minor_number minor_arg, |
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189 | void *arg |
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190 | ) |
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191 | { |
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192 | rtems_status_code status; |
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193 | rtems_device_minor_number minor; |
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194 | |
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195 | /* |
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196 | * initialize the termio interface. |
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197 | */ |
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198 | |
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199 | rtems_termios_initialize(); |
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200 | |
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201 | for (minor=0; minor < Console_Port_Count ; minor++) { |
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202 | /* |
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203 | * First perform the configuration dependent probe, then the |
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204 | * device dependent probe |
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205 | */ |
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206 | |
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207 | if ((!Console_Port_Tbl[minor].deviceProbe || |
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208 | Console_Port_Tbl[minor].deviceProbe(minor)) && |
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209 | Console_Port_Tbl[minor].pDeviceFns->deviceProbe(minor)) { |
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210 | /* |
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211 | * Use this device for the console |
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212 | */ |
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213 | break; |
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214 | } |
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215 | } |
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216 | if ( minor == Console_Port_Count ) { |
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217 | /* |
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218 | * Failed to find a working device |
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219 | */ |
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220 | rtems_fatal_error_occurred(RTEMS_IO_ERROR); |
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221 | } |
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222 | |
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223 | Console_Port_Minor=minor; |
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224 | |
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225 | /* |
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226 | * Register Device Names |
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227 | */ |
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228 | status = rtems_io_register_name("/dev/console", major, Console_Port_Minor ); |
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229 | if (status != RTEMS_SUCCESSFUL) { |
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230 | rtems_fatal_error_occurred(status); |
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231 | } |
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232 | Console_Port_Tbl[minor].pDeviceFns->deviceInitialize(Console_Port_Minor); |
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233 | |
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234 | for (minor++;minor<Console_Port_Count;minor++) { |
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235 | /* |
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236 | * First perform the configuration dependent probe, then the |
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237 | * device dependent probe |
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238 | */ |
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239 | |
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240 | if ( (!Console_Port_Tbl[minor].deviceProbe || |
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241 | Console_Port_Tbl[minor].deviceProbe(minor)) && |
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242 | Console_Port_Tbl[minor].pDeviceFns->deviceProbe(minor)) { |
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243 | status = rtems_io_register_name( |
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244 | Console_Port_Tbl[minor].sDeviceName, |
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245 | major, |
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246 | minor ); |
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247 | if (status != RTEMS_SUCCESSFUL) { |
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248 | rtems_fatal_error_occurred(status); |
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249 | } |
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250 | |
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251 | /* |
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252 | * Initialize the hardware device. |
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253 | */ |
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254 | |
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255 | Console_Port_Tbl[minor].pDeviceFns->deviceInitialize(minor); |
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256 | |
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257 | } |
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258 | } |
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259 | |
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260 | return RTEMS_SUCCESSFUL; |
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261 | } |
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262 | |
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263 | |
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264 | |
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