1 | #define I_WANT_TERMIOS |
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2 | /* |
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3 | * BSP specific Serial I/O Functions for the eth-comm BSP |
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4 | * |
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5 | * This file contains the BSP specific functions for |
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6 | * performing serial I/O. These are the functions |
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7 | * RTEMS uses (the 6 listed in the device driver |
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8 | * structure) |
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9 | * |
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10 | * The SCCs and SMCs are assigned as follows |
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11 | * |
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12 | * Channel Device Minor Termios |
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13 | * SMC1 /dev/tty0 0 no |
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14 | * SMC2 /dev/tty1 1 no |
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15 | * SCC1 ethernet |
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16 | * SCC2 /dev/console 3 yes |
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17 | * SCC3 /dev/tty3 4 no |
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18 | * SCC4 /dev/tty4 5 no |
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19 | * |
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20 | * FIXME: This should use termios for /dev/console, but it doesn't |
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21 | * appear to work correctly yet. On startup, with termios enabled, |
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22 | * the board hangs for a few seconds before running correctly |
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23 | * |
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24 | * Author: Jay Monkman (jmonkman@frasca.com) |
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25 | * Copyright (C) 1998 by Frasca International, Inc. |
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26 | * |
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27 | * $Id$ |
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28 | */ |
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29 | |
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30 | #include <rtems/libio.h> |
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31 | #include <mpc860.h> |
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32 | #include <mpc860/console.h> |
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33 | #include <termios.h> |
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34 | |
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35 | rtems_device_driver console_initialize(rtems_device_major_number major, |
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36 | rtems_device_minor_number minor, |
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37 | void *arg) |
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38 | { |
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39 | rtems_status_code status; |
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40 | rtems_isr_entry old_handler; |
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41 | rtems_status_code sc; |
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42 | |
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43 | #ifdef I_WANT_TERMIOS |
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44 | /* |
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45 | * Set up TERMIOS (for /dev/console) |
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46 | */ |
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47 | rtems_termios_initialize(); |
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48 | #endif |
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49 | |
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50 | /* |
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51 | * Set up Buffer Descriptors |
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52 | */ |
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53 | m860_console_initialize(); |
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54 | |
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55 | /* |
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56 | * Do device-specific initialization |
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57 | */ |
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58 | m860_scc_initialize(2); /* /dev/console */ |
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59 | m860_scc_initialize(3); /* /dev/tty3 */ |
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60 | m860_scc_initialize(4); /* /dev/tty4 */ |
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61 | m860_smc_initialize(1); /* /dev/tty0 */ |
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62 | m860_smc_initialize(2); /* /dev/tty1 */ |
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63 | |
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64 | sc = rtems_interrupt_catch (m860_scc2_console_interrupt_handler, |
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65 | PPC_IRQ_CPM_SCC2, |
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66 | &old_handler); |
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67 | sc = rtems_interrupt_catch (m860_scc3_console_interrupt_handler, |
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68 | PPC_IRQ_CPM_SCC3, |
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69 | &old_handler); |
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70 | sc = rtems_interrupt_catch (m860_scc4_console_interrupt_handler, |
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71 | PPC_IRQ_CPM_SCC4, |
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72 | &old_handler); |
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73 | sc = rtems_interrupt_catch (m860_smc1_console_interrupt_handler, |
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74 | PPC_IRQ_CPM_SMC1, |
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75 | &old_handler); |
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76 | sc = rtems_interrupt_catch (m860_smc2_console_interrupt_handler, |
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77 | PPC_IRQ_CPM_SMC2, |
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78 | &old_handler); |
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79 | |
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80 | /* |
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81 | * Register the devices |
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82 | */ |
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83 | status = rtems_io_register_name ("/dev/console", major, SCC2_MINOR); |
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84 | if (status != RTEMS_SUCCESSFUL) |
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85 | rtems_fatal_error_occurred (status); |
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86 | status = rtems_io_register_name ("/dev/tty0", major, SMC1_MINOR); |
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87 | if (status != RTEMS_SUCCESSFUL) |
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88 | rtems_fatal_error_occurred (status); |
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89 | status = rtems_io_register_name ("/dev/tty1", major, SMC2_MINOR); |
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90 | if (status != RTEMS_SUCCESSFUL) |
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91 | rtems_fatal_error_occurred (status); |
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92 | status = rtems_io_register_name ("/dev/tty3", major, SCC3_MINOR); |
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93 | if (status != RTEMS_SUCCESSFUL) |
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94 | rtems_fatal_error_occurred (status); |
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95 | status = rtems_io_register_name ("/dev/tty4", major, SCC4_MINOR); |
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96 | if (status != RTEMS_SUCCESSFUL) |
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97 | rtems_fatal_error_occurred (status); |
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98 | return RTEMS_SUCCESSFUL; |
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99 | } |
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100 | |
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101 | rtems_device_driver console_open(rtems_device_major_number major, |
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102 | rtems_device_minor_number minor, |
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103 | void *arg) |
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104 | { |
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105 | volatile m860SCCRegisters_t *sccregs; |
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106 | |
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107 | #ifdef I_WANT_TERMIOS |
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108 | static const rtems_termios_callbacks sccPollCallbacks = { |
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109 | NULL, /* firstOpen */ |
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110 | NULL, /* lastClose */ |
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111 | m860_char_poll_read, /* pollRead */ |
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112 | m860_char_poll_write, /* write */ |
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113 | m860_scc_set_attributes, /* setAttributes */ |
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114 | NULL, /* stopRemoteTx */ |
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115 | NULL, /* startRemoteTx */ |
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116 | 0 /* outputUsesInterrupts */ |
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117 | }; |
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118 | #endif /* I_WANT_TERMIOS */ |
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119 | |
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120 | sccregs = 0; |
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121 | |
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122 | switch (minor) { |
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123 | case 0: |
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124 | m860.smc1.smcm = 1; /* Enable SMC1 RX interrupts */ |
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125 | m860.cimr |= 1UL << 4; /* Enable SMC1 interrupts */ |
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126 | break; |
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127 | case 1: |
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128 | m860.smc2.smcm = 1; /* Enable SMC2 RX interrupts */ |
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129 | m860.cimr |= 1UL << 3; /* Enable SMC2 interrupts */ |
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130 | break; |
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131 | case 2: |
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132 | m860.cimr |= 1UL << 30; /* Enable SCC1 interrupts */ |
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133 | sccregs = &m860.scc1; |
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134 | break; |
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135 | case 3: |
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136 | #ifndef I_WANT_TERMIOS |
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137 | m860.cimr |= 1UL << 29; /* Enable SCC2 interrupts */ |
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138 | #endif /* I_WANT_TERMIOS */ |
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139 | sccregs = &m860.scc2; |
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140 | break; |
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141 | case 4: |
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142 | m860.cimr |= 1UL << 28; /* Enable SCC3 interrupts */ |
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143 | sccregs = &m860.scc3; |
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144 | break; |
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145 | case 5: |
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146 | m860.cimr |= 1UL << 27; /* Enable SCC4 interrupts */ |
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147 | sccregs = &m860.scc4; |
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148 | break; |
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149 | default: |
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150 | rtems_panic ("CONSOLE: bad minor number"); |
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151 | } |
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152 | |
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153 | if (sccregs) |
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154 | sccregs->sccm=0x3; |
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155 | |
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156 | #ifdef I_WANT_TERMIOS |
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157 | if (minor == SCC2_MINOR) { |
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158 | return rtems_termios_open (major, minor, arg, &sccPollCallbacks); |
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159 | } |
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160 | else { |
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161 | return RTEMS_SUCCESSFUL; |
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162 | } |
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163 | #else |
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164 | return RTEMS_SUCCESSFUL; |
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165 | #endif |
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166 | } |
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167 | |
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168 | rtems_device_driver console_close(rtems_device_major_number major, |
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169 | rtems_device_minor_number minor, |
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170 | void *arg) |
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171 | { |
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172 | #ifdef I_WANT_TERMIOS |
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173 | if (minor == SCC2_MINOR) { |
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174 | return rtems_termios_close (arg); |
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175 | } |
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176 | else { |
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177 | return RTEMS_SUCCESSFUL; |
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178 | } |
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179 | #else |
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180 | return RTEMS_SUCCESSFUL; |
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181 | #endif |
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182 | } |
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183 | |
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184 | rtems_device_driver console_read(rtems_device_major_number major, |
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185 | rtems_device_minor_number minor, |
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186 | void *arg) |
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187 | { |
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188 | #ifdef I_WANT_TERMIOS |
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189 | if (minor == SCC2_MINOR) { |
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190 | return rtems_termios_read(arg); |
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191 | } |
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192 | else { |
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193 | return m860_console_read(major, minor, arg); |
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194 | } |
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195 | #else |
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196 | return m860_console_read(major, minor, arg); |
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197 | #endif |
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198 | } |
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199 | |
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200 | rtems_device_driver console_write(rtems_device_major_number major, |
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201 | rtems_device_minor_number minor, |
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202 | void *arg) |
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203 | { |
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204 | #ifdef I_WANT_TERMIOS |
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205 | if (minor == SCC2_MINOR) { |
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206 | return rtems_termios_write(arg); |
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207 | } |
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208 | else { |
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209 | return m860_console_write(major, minor, arg); |
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210 | } |
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211 | #else |
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212 | return m860_console_write(major, minor, arg); |
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213 | #endif |
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214 | } |
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215 | |
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216 | /* |
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217 | * Handle ioctl request. |
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218 | * Should set hardware line speed, bits/char, etc. |
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219 | */ |
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220 | rtems_device_driver console_control(rtems_device_major_number major, |
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221 | rtems_device_minor_number minor, |
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222 | void *arg) |
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223 | { |
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224 | #ifdef I_WANT_TERMIOS |
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225 | if (minor == SCC2_MINOR) { |
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226 | return rtems_termios_ioctl (arg); |
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227 | } |
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228 | else { |
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229 | return RTEMS_SUCCESSFUL; |
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230 | } |
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231 | #else |
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232 | return RTEMS_SUCCESSFUL; |
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233 | #endif |
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234 | } |
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235 | |
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