1 | /* |
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2 | * Multi UART console serial I/O. |
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3 | * |
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4 | * TO DO: Add DMA input/output |
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5 | */ |
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6 | |
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7 | #include <stdio.h> |
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8 | #include <fcntl.h> |
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9 | #include <rtems/libio.h> |
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10 | #include <rtems/termiostypes.h> |
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11 | #include <termios.h> |
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12 | #include <bsp.h> |
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13 | #include <malloc.h> |
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14 | #include <rtems/mw_uid.h> |
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15 | |
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16 | #include <rtems/bspIo.h> |
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17 | |
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18 | #define UART_INTC0_IRQ_VECTOR(x) (64+13+(x)) |
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19 | |
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20 | #define MCF5282_UART_USR_ERROR ( MCF5282_UART_USR_RB | \ |
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21 | MCF5282_UART_USR_FE | \ |
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22 | MCF5282_UART_USR_PE | \ |
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23 | MCF5282_UART_USR_OE ) |
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24 | |
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25 | static int IntUartPollWrite(int minor, const char *buf, int len); |
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26 | static int IntUartInterruptWrite (int minor, const char *buf, int len); |
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27 | |
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28 | static void |
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29 | _BSP_null_char( char c ) |
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30 | { |
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31 | int level; |
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32 | |
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33 | if (c == '\n') |
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34 | _BSP_null_char('\r'); |
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35 | rtems_interrupt_disable(level); |
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36 | while ( (MCF5282_UART_USR(CONSOLE_PORT) & MCF5282_UART_USR_TXRDY) == 0 ) |
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37 | continue; |
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38 | MCF5282_UART_UTB(CONSOLE_PORT) = c; |
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39 | while ( (MCF5282_UART_USR(CONSOLE_PORT) & MCF5282_UART_USR_TXRDY) == 0 ) |
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40 | continue; |
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41 | rtems_interrupt_enable(level); |
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42 | } |
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43 | BSP_output_char_function_type BSP_output_char = _BSP_null_char; |
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44 | |
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45 | #define MAX_UART_INFO 3 |
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46 | #define RX_BUFFER_SIZE 512 |
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47 | |
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48 | struct IntUartInfoStruct |
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49 | { |
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50 | int iomode; |
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51 | volatile int uimr; |
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52 | int baud; |
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53 | int databits; |
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54 | int parity; |
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55 | int stopbits; |
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56 | int hwflow; |
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57 | int rx_in; |
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58 | int rx_out; |
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59 | char rx_buffer[RX_BUFFER_SIZE]; |
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60 | void *ttyp; |
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61 | }; |
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62 | |
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63 | struct IntUartInfoStruct IntUartInfo[MAX_UART_INFO]; |
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64 | |
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65 | /*************************************************************************** |
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66 | Function : IntUartSet |
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67 | |
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68 | Description : This updates the hardware UART settings. |
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69 | ***************************************************************************/ |
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70 | static void |
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71 | IntUartSet(int minor, int baud, int databits, int parity, int stopbits, int hwflow) |
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72 | { |
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73 | int divisor; |
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74 | uint32_t clock_speed; |
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75 | uint8_t umr1 = 0; |
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76 | uint8_t umr2 = 0; |
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77 | struct IntUartInfoStruct *info = &IntUartInfo[minor]; |
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78 | int level; |
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79 | |
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80 | rtems_interrupt_disable(level); |
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81 | |
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82 | |
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83 | /* disable interrupts, clear RTS line, and disable the UARTS */ |
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84 | MCF5282_UART_UIMR(minor) = 0; |
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85 | MCF5282_UART_UOP0(minor) = 1; |
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86 | MCF5282_UART_UCR(minor) = (MCF5282_UART_UCR_TX_DISABLED | MCF5282_UART_UCR_RX_DISABLED); |
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87 | |
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88 | /* save the current values */ |
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89 | info->uimr = 0; |
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90 | info->baud = baud; |
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91 | info->databits = databits; |
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92 | info->parity = parity; |
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93 | info->stopbits = stopbits; |
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94 | info->hwflow = hwflow; |
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95 | |
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96 | clock_speed = get_CPU_clock_speed(); |
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97 | /* determine the baud divisor value */ |
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98 | divisor = (clock_speed / ( 32 * baud )); |
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99 | if ( divisor < 2 ) |
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100 | divisor = 2; |
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101 | |
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102 | /* check to see if doing hardware flow control */ |
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103 | if ( hwflow ) |
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104 | { |
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105 | /* set hardware flow options */ |
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106 | umr1 |= MCF5282_UART_UMR1_RXRTS; |
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107 | umr2 |= MCF5282_UART_UMR2_TXCTS; |
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108 | } |
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109 | |
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110 | /* determine the new umr values */ |
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111 | umr1 |= (parity | databits); |
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112 | umr2 |= (stopbits); |
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113 | |
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114 | /* reset the uart */ |
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115 | MCF5282_UART_UCR(minor) = MCF5282_UART_UCR_RESET_ERROR; |
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116 | MCF5282_UART_UCR(minor) = MCF5282_UART_UCR_RESET_RX; |
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117 | MCF5282_UART_UCR(minor) = MCF5282_UART_UCR_RESET_TX; |
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118 | |
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119 | /* reset the uart mode register and update values */ |
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120 | MCF5282_UART_UCR(minor) = MCF5282_UART_UCR_RESET_MR; |
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121 | MCF5282_UART_UMR(minor) = umr1; |
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122 | MCF5282_UART_UMR(minor) = umr2; |
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123 | |
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124 | /* set the baud rate values */ |
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125 | MCF5282_UART_UCSR(minor) = (MCF5282_UART_UCSR_RCS_SYS_CLK | MCF5282_UART_UCSR_TCS_SYS_CLK); |
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126 | MCF5282_UART_UBG1(minor) = (divisor & 0xff00) >> 8; |
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127 | MCF5282_UART_UBG2(minor) = (divisor & 0x00ff); |
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128 | |
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129 | /* enable the uart */ |
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130 | MCF5282_UART_UCR(minor) = (MCF5282_UART_UCR_TX_ENABLED | MCF5282_UART_UCR_RX_ENABLED); |
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131 | |
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132 | /* check to see if interrupts need to be enabled */ |
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133 | if ( info->iomode != TERMIOS_POLLED ) |
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134 | { |
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135 | /* enable rx interrupts */ |
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136 | info->uimr |= MCF5282_UART_UIMR_FFULL; |
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137 | MCF5282_UART_UIMR(minor) = info->uimr; |
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138 | } |
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139 | |
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140 | /* check to see if doing hardware flow control */ |
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141 | if ( hwflow ) |
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142 | { |
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143 | /* assert the RTS line */ |
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144 | MCF5282_UART_UOP1(minor) = 1; |
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145 | } |
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146 | |
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147 | rtems_interrupt_enable(level); |
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148 | |
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149 | } |
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150 | |
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151 | |
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152 | /*************************************************************************** |
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153 | Function : IntUartSetAttributes |
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154 | |
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155 | Description : This provides the hardware-dependent portion of tcsetattr(). |
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156 | value and sets it. At the moment this just sets the baud rate. |
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157 | |
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158 | Note: The highest baudrate is 115200 as this stays within |
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159 | an error of +/- 5% at 25MHz processor clock |
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160 | ***************************************************************************/ |
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161 | static int |
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162 | IntUartSetAttributes(int minor, const struct termios *t) |
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163 | { |
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164 | /* set default index values */ |
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165 | int baud = (int)19200; |
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166 | int databits = (int)MCF5282_UART_UMR1_BC_8; |
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167 | int parity = (int)MCF5282_UART_UMR1_PM_NONE; |
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168 | int stopbits = (int)MCF5282_UART_UMR2_STOP_BITS_1; |
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169 | int hwflow = (int)0; |
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170 | struct IntUartInfoStruct *info = &IntUartInfo[minor]; |
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171 | |
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172 | /* check to see if input is valid */ |
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173 | if ( t != (const struct termios *)0 ) |
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174 | { |
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175 | /* determine baud rate index */ |
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176 | baud = rtems_termios_baud_to_number(t->c_cflag & CBAUD); |
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177 | |
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178 | /* determine data bits */ |
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179 | switch ( t->c_cflag & CSIZE ) |
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180 | { |
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181 | case CS5: |
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182 | databits = (int)MCF5282_UART_UMR1_BC_5; |
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183 | break; |
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184 | case CS6: |
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185 | databits = (int)MCF5282_UART_UMR1_BC_6; |
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186 | break; |
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187 | case CS7: |
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188 | databits = (int)MCF5282_UART_UMR1_BC_7; |
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189 | break; |
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190 | case CS8: |
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191 | databits = (int)MCF5282_UART_UMR1_BC_8; |
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192 | break; |
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193 | } |
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194 | |
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195 | /* determine if parity is enabled */ |
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196 | if ( t->c_cflag & PARENB ) |
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197 | { |
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198 | if ( t->c_cflag & PARODD ) |
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199 | { |
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200 | /* odd parity */ |
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201 | parity = (int)MCF5282_UART_UMR1_PM_ODD; |
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202 | } |
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203 | else |
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204 | { |
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205 | /* even parity */ |
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206 | parity = (int)MCF5282_UART_UMR1_PM_EVEN; |
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207 | } |
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208 | } |
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209 | |
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210 | /* determine stop bits */ |
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211 | if ( t->c_cflag & CSTOPB ) |
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212 | { |
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213 | /* two stop bits */ |
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214 | stopbits = (int)MCF5282_UART_UMR2_STOP_BITS_2; |
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215 | } |
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216 | |
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217 | /* check to see if hardware flow control */ |
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218 | if ( t->c_cflag & CRTSCTS ) |
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219 | { |
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220 | hwflow = 1; |
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221 | } |
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222 | } |
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223 | |
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224 | /* check to see if values have changed */ |
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225 | if ( ( baud != info->baud ) || |
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226 | ( databits != info->databits ) || |
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227 | ( parity != info->parity ) || |
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228 | ( stopbits != info->stopbits ) || |
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229 | ( hwflow != info->hwflow ) ) |
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230 | { |
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231 | |
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232 | /* call function to set values */ |
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233 | IntUartSet(minor, baud, databits, parity, stopbits, hwflow); |
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234 | } |
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235 | |
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236 | return( RTEMS_SUCCESSFUL ); |
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237 | |
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238 | } |
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239 | |
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240 | /*************************************************************************** |
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241 | Function : IntUartInterruptHandler |
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242 | |
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243 | Description : This is the interrupt handler for the internal uart. It |
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244 | determines which channel caused the interrupt before queueing any received |
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245 | chars and dequeueing chars waiting for transmission. |
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246 | ***************************************************************************/ |
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247 | static rtems_isr |
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248 | IntUartInterruptHandler(rtems_vector_number v) |
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249 | { |
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250 | unsigned int chan = v - UART_INTC0_IRQ_VECTOR(0); |
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251 | struct IntUartInfoStruct *info = &IntUartInfo[chan]; |
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252 | |
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253 | /* check to see if received data */ |
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254 | if ( MCF5282_UART_UISR(chan) & MCF5282_UART_UISR_RXRDY ) |
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255 | { |
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256 | /* read data and put into the receive buffer */ |
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257 | while ( MCF5282_UART_USR(chan) & MCF5282_UART_USR_RXRDY ) |
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258 | { |
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259 | |
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260 | if ( MCF5282_UART_USR(chan) & MCF5282_UART_USR_ERROR ) |
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261 | { |
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262 | /* clear the error */ |
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263 | MCF5282_UART_UCR(chan) = MCF5282_UART_UCR_RESET_ERROR; |
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264 | } |
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265 | /* put data in rx buffer and check for errors */ |
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266 | info->rx_buffer[info->rx_in] = MCF5282_UART_URB(chan); |
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267 | |
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268 | /* update buffer values */ |
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269 | info->rx_in++; |
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270 | |
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271 | if ( info->rx_in >= RX_BUFFER_SIZE ) |
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272 | { |
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273 | info->rx_in = 0; |
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274 | } |
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275 | } |
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276 | /* Make sure the port has been opened */ |
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277 | if ( info->ttyp ) |
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278 | { |
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279 | |
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280 | /* check to see if task driven */ |
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281 | if ( info->iomode == TERMIOS_TASK_DRIVEN ) |
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282 | { |
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283 | /* notify rx task that rx buffer has data */ |
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284 | rtems_termios_rxirq_occured(info->ttyp); |
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285 | } |
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286 | else |
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287 | { |
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288 | /* Push up the received data */ |
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289 | rtems_termios_enqueue_raw_characters(info->ttyp, info->rx_buffer, info->rx_in); |
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290 | info->rx_in = 0; |
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291 | } |
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292 | } |
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293 | } |
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294 | |
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295 | /* check to see if data needs to be transmitted */ |
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296 | if ( ( info->uimr & MCF5282_UART_UIMR_TXRDY ) && |
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297 | ( MCF5282_UART_UISR(chan) & MCF5282_UART_UISR_TXRDY ) ) |
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298 | { |
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299 | |
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300 | /* disable tx interrupts */ |
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301 | info->uimr &= ~MCF5282_UART_UIMR_TXRDY; |
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302 | MCF5282_UART_UIMR(chan) = info->uimr; |
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303 | |
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304 | /* tell upper level that character has been sent */ |
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305 | if ( info->ttyp ) |
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306 | rtems_termios_dequeue_characters(info->ttyp, 1); |
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307 | } |
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308 | } |
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309 | |
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310 | |
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311 | |
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312 | /*************************************************************************** |
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313 | Function : IntUartInitialize |
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314 | |
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315 | Description : This initialises the internal uart hardware for all |
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316 | internal uarts. If the internal uart is to be interrupt driven then the |
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317 | interrupt vectors are hooked. |
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318 | ***************************************************************************/ |
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319 | static void |
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320 | IntUartInitialize(void) |
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321 | { |
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322 | unsigned int chan; |
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323 | struct IntUartInfoStruct *info; |
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324 | rtems_isr_entry old_handler; |
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325 | int level; |
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326 | |
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327 | for ( chan = 0; chan < MAX_UART_INFO; chan++ ) |
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328 | { |
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329 | info = &IntUartInfo[chan]; |
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330 | |
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331 | info->ttyp = NULL; |
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332 | info->rx_in = 0; |
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333 | info->rx_out = 0; |
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334 | info->baud = -1; |
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335 | info->databits = -1; |
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336 | info->parity = -1; |
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337 | info->stopbits = -1; |
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338 | info->hwflow = -1; |
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339 | info->iomode = TERMIOS_POLLED; |
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340 | |
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341 | MCF5282_UART_UACR(chan) = 0; |
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342 | MCF5282_UART_UIMR(chan) = 0; |
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343 | if ( info->iomode != TERMIOS_POLLED ) |
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344 | { |
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345 | rtems_interrupt_catch (IntUartInterruptHandler, |
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346 | UART_INTC0_IRQ_VECTOR(chan), |
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347 | &old_handler); |
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348 | } |
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349 | |
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350 | /* set uart default values */ |
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351 | IntUartSetAttributes(chan, NULL); |
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352 | |
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353 | /* unmask interrupt */ |
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354 | rtems_interrupt_disable(level); |
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355 | switch(chan) { |
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356 | case 0: |
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357 | MCF5282_INTC0_ICR13 = MCF5282_INTC_ICR_IL(UART0_IRQ_LEVEL) | |
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358 | MCF5282_INTC_ICR_IP(UART0_IRQ_PRIORITY); |
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359 | MCF5282_INTC0_IMRL &= ~(MCF5282_INTC_IMRL_INT13 | |
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360 | MCF5282_INTC_IMRL_MASKALL); |
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361 | break; |
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362 | |
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363 | case 1: |
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364 | MCF5282_INTC0_ICR14 = MCF5282_INTC_ICR_IL(UART1_IRQ_LEVEL) | |
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365 | MCF5282_INTC_ICR_IP(UART1_IRQ_PRIORITY); |
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366 | MCF5282_INTC0_IMRL &= ~(MCF5282_INTC_IMRL_INT14 | |
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367 | MCF5282_INTC_IMRL_MASKALL); |
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368 | break; |
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369 | |
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370 | case 2: |
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371 | MCF5282_INTC0_ICR15 = MCF5282_INTC_ICR_IL(UART2_IRQ_LEVEL) | |
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372 | MCF5282_INTC_ICR_IP(UART2_IRQ_PRIORITY); |
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373 | MCF5282_INTC0_IMRL &= ~(MCF5282_INTC_IMRL_INT15 | |
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374 | MCF5282_INTC_IMRL_MASKALL); |
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375 | break; |
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376 | } |
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377 | rtems_interrupt_enable(level); |
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378 | |
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379 | } /* of chan loop */ |
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380 | |
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381 | |
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382 | } /* IntUartInitialise */ |
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383 | |
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384 | |
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385 | /*************************************************************************** |
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386 | Function : IntUartInterruptWrite |
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387 | |
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388 | Description : This writes a single character to the appropriate uart |
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389 | channel. This is either called during an interrupt or in the user's task |
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390 | to initiate a transmit sequence. Calling this routine enables Tx |
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391 | interrupts. |
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392 | ***************************************************************************/ |
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393 | static int |
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394 | IntUartInterruptWrite (int minor, const char *buf, int len) |
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395 | { |
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396 | int level; |
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397 | |
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398 | rtems_interrupt_disable(level); |
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399 | |
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400 | /* write out character */ |
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401 | MCF5282_UART_UTB(minor) = *buf; |
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402 | |
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403 | /* enable tx interrupt */ |
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404 | IntUartInfo[minor].uimr |= MCF5282_UART_UIMR_TXRDY; |
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405 | MCF5282_UART_UIMR(minor) = IntUartInfo[minor].uimr; |
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406 | |
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407 | rtems_interrupt_enable(level); |
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408 | return( 0 ); |
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409 | } |
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410 | |
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411 | /*************************************************************************** |
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412 | Function : IntUartInterruptOpen |
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413 | |
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414 | Description : This enables interrupts when the tty is opened. |
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415 | ***************************************************************************/ |
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416 | static int |
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417 | IntUartInterruptOpen(int major, int minor, void *arg) |
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418 | { |
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419 | struct IntUartInfoStruct *info = &IntUartInfo[minor]; |
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420 | |
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421 | /* enable the uart */ |
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422 | MCF5282_UART_UCR(minor) = (MCF5282_UART_UCR_TX_ENABLED | MCF5282_UART_UCR_RX_ENABLED); |
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423 | |
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424 | /* check to see if interrupts need to be enabled */ |
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425 | if ( info->iomode != TERMIOS_POLLED ) |
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426 | { |
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427 | /* enable rx interrupts */ |
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428 | info->uimr |= MCF5282_UART_UIMR_FFULL; |
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429 | MCF5282_UART_UIMR(minor) = info->uimr; |
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430 | } |
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431 | |
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432 | /* check to see if doing hardware flow control */ |
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433 | if ( info->hwflow ) |
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434 | { |
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435 | /* assert the RTS line */ |
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436 | MCF5282_UART_UOP1(minor) = 1; |
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437 | } |
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438 | |
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439 | return( 0 ); |
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440 | } |
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441 | |
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442 | |
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443 | |
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444 | /*************************************************************************** |
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445 | Function : IntUartInterruptClose |
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446 | |
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447 | Description : This disables interrupts when the tty is closed. |
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448 | ***************************************************************************/ |
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449 | static int |
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450 | IntUartInterruptClose(int major, int minor, void *arg) |
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451 | { |
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452 | struct IntUartInfoStruct *info = &IntUartInfo[minor]; |
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453 | |
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454 | /* disable the interrupts and the uart */ |
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455 | MCF5282_UART_UIMR(minor) = 0; |
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456 | MCF5282_UART_UCR(minor) = (MCF5282_UART_UCR_TX_DISABLED | MCF5282_UART_UCR_RX_DISABLED); |
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457 | |
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458 | /* reset values */ |
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459 | info->ttyp = NULL; |
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460 | info->uimr = 0; |
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461 | info->rx_in = 0; |
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462 | info->rx_out = 0; |
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463 | |
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464 | return( 0 ); |
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465 | } |
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466 | |
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467 | /*************************************************************************** |
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468 | Function : IntUartTaskRead |
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469 | |
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470 | Description : This reads all available characters from the internal uart |
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471 | and places them into the termios buffer. The rx interrupts will be |
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472 | re-enabled after all data has been read. |
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473 | ***************************************************************************/ |
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474 | static int |
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475 | IntUartTaskRead(int minor) |
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476 | { |
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477 | char buffer[RX_BUFFER_SIZE]; |
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478 | int count; |
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479 | int rx_in; |
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480 | int index = 0; |
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481 | struct IntUartInfoStruct *info = &IntUartInfo[minor]; |
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482 | |
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483 | /* determine number of values to copy out */ |
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484 | rx_in = info->rx_in; |
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485 | if ( info->rx_out <= rx_in ) |
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486 | { |
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487 | count = rx_in - info->rx_out; |
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488 | } |
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489 | else |
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490 | { |
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491 | count = (RX_BUFFER_SIZE - info->rx_out) + rx_in; |
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492 | } |
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493 | |
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494 | /* copy data into local buffer from rx buffer */ |
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495 | while ( ( index < count ) && ( index < RX_BUFFER_SIZE ) ) |
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496 | { |
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497 | /* copy data byte */ |
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498 | buffer[index] = info->rx_buffer[info->rx_out]; |
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499 | index++; |
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500 | |
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501 | /* increment rx buffer values */ |
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502 | info->rx_out++; |
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503 | if ( info->rx_out >= RX_BUFFER_SIZE ) |
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504 | { |
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505 | info->rx_out = 0; |
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506 | } |
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507 | } |
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508 | |
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509 | /* check to see if buffer is not empty */ |
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510 | if ( count > 0 ) |
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511 | { |
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512 | /* set characters into termios buffer */ |
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513 | rtems_termios_enqueue_raw_characters(info->ttyp, buffer, count); |
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514 | } |
---|
515 | |
---|
516 | return( EOF ); |
---|
517 | } |
---|
518 | |
---|
519 | |
---|
520 | |
---|
521 | /*************************************************************************** |
---|
522 | Function : IntUartPollRead |
---|
523 | |
---|
524 | Description : This reads a character from the internal uart. It returns |
---|
525 | to the caller without blocking if not character is waiting. |
---|
526 | ***************************************************************************/ |
---|
527 | static int |
---|
528 | IntUartPollRead (int minor) |
---|
529 | { |
---|
530 | if ( (MCF5282_UART_USR(minor) & MCF5282_UART_USR_RXRDY) == 0 ) |
---|
531 | return(-1); |
---|
532 | |
---|
533 | return(MCF5282_UART_URB(minor)); |
---|
534 | } |
---|
535 | |
---|
536 | |
---|
537 | /*************************************************************************** |
---|
538 | Function : IntUartPollWrite |
---|
539 | |
---|
540 | Description : This writes out each character in the buffer to the |
---|
541 | appropriate internal uart channel waiting till each one is sucessfully |
---|
542 | transmitted. |
---|
543 | ***************************************************************************/ |
---|
544 | static int |
---|
545 | IntUartPollWrite (int minor, const char *buf, int len) |
---|
546 | { |
---|
547 | /* loop over buffer */ |
---|
548 | while ( len-- ) |
---|
549 | { |
---|
550 | /* block until we can transmit */ |
---|
551 | while ( (MCF5282_UART_USR(minor) & MCF5282_UART_USR_TXRDY) == 0 ) |
---|
552 | continue; |
---|
553 | /* transmit data byte */ |
---|
554 | MCF5282_UART_UTB(minor) = *buf++; |
---|
555 | } |
---|
556 | return(0); |
---|
557 | } |
---|
558 | |
---|
559 | /*************************************************************************** |
---|
560 | Function : console_initialize |
---|
561 | |
---|
562 | Description : This initialises termios, both sets of uart hardware before |
---|
563 | registering /dev/tty devices for each channel and the system /dev/console. |
---|
564 | ***************************************************************************/ |
---|
565 | rtems_device_driver console_initialize( |
---|
566 | rtems_device_major_number major, |
---|
567 | rtems_device_minor_number minor, |
---|
568 | void *arg ) |
---|
569 | { |
---|
570 | rtems_status_code status; |
---|
571 | |
---|
572 | |
---|
573 | /* Set up TERMIOS */ |
---|
574 | rtems_termios_initialize (); |
---|
575 | |
---|
576 | /* set io modes for the different channels and initialize device */ |
---|
577 | IntUartInfo[minor].iomode = TERMIOS_IRQ_DRIVEN; |
---|
578 | IntUartInitialize(); |
---|
579 | |
---|
580 | /* Register the console port */ |
---|
581 | status = rtems_io_register_name ("/dev/console", major, CONSOLE_PORT); |
---|
582 | if ( status != RTEMS_SUCCESSFUL ) |
---|
583 | { |
---|
584 | rtems_fatal_error_occurred (status); |
---|
585 | } |
---|
586 | |
---|
587 | /* Register the other port */ |
---|
588 | if ( CONSOLE_PORT != 0 ) |
---|
589 | { |
---|
590 | status = rtems_io_register_name ("/dev/tty00", major, 0); |
---|
591 | if ( status != RTEMS_SUCCESSFUL ) |
---|
592 | { |
---|
593 | rtems_fatal_error_occurred (status); |
---|
594 | } |
---|
595 | } |
---|
596 | if ( CONSOLE_PORT != 1 ) |
---|
597 | { |
---|
598 | status = rtems_io_register_name ("/dev/tty01", major, 1); |
---|
599 | if ( status != RTEMS_SUCCESSFUL ) |
---|
600 | { |
---|
601 | rtems_fatal_error_occurred (status); |
---|
602 | } |
---|
603 | } |
---|
604 | |
---|
605 | return(RTEMS_SUCCESSFUL); |
---|
606 | } |
---|
607 | |
---|
608 | /*************************************************************************** |
---|
609 | Function : console_open |
---|
610 | |
---|
611 | Description : This actually opens the device depending on the minor |
---|
612 | number set during initialisation. The device specific access routines are |
---|
613 | passed to termios when the devices is opened depending on whether it is |
---|
614 | polled or not. |
---|
615 | ***************************************************************************/ |
---|
616 | rtems_device_driver console_open( |
---|
617 | rtems_device_major_number major, |
---|
618 | rtems_device_minor_number minor, |
---|
619 | void * arg) |
---|
620 | { |
---|
621 | rtems_status_code status = RTEMS_INVALID_NUMBER; |
---|
622 | rtems_libio_open_close_args_t *args = (rtems_libio_open_close_args_t *)arg; |
---|
623 | struct IntUartInfoStruct *info; |
---|
624 | |
---|
625 | static const rtems_termios_callbacks IntUartPollCallbacks = { |
---|
626 | NULL, /* firstOpen */ |
---|
627 | NULL, /* lastClose */ |
---|
628 | IntUartPollRead, /* pollRead */ |
---|
629 | IntUartPollWrite, /* write */ |
---|
630 | IntUartSetAttributes, /* setAttributes */ |
---|
631 | NULL, /* stopRemoteTx */ |
---|
632 | NULL, /* startRemoteTx */ |
---|
633 | TERMIOS_POLLED /* mode */ |
---|
634 | }; |
---|
635 | static const rtems_termios_callbacks IntUartIntrCallbacks = { |
---|
636 | IntUartInterruptOpen, /* firstOpen */ |
---|
637 | IntUartInterruptClose, /* lastClose */ |
---|
638 | NULL, /* pollRead */ |
---|
639 | IntUartInterruptWrite, /* write */ |
---|
640 | IntUartSetAttributes, /* setAttributes */ |
---|
641 | NULL, /* stopRemoteTx */ |
---|
642 | NULL, /* startRemoteTx */ |
---|
643 | TERMIOS_IRQ_DRIVEN /* mode */ |
---|
644 | }; |
---|
645 | |
---|
646 | static const rtems_termios_callbacks IntUartTaskCallbacks = { |
---|
647 | IntUartInterruptOpen, /* firstOpen */ |
---|
648 | IntUartInterruptClose, /* lastClose */ |
---|
649 | IntUartTaskRead, /* pollRead */ |
---|
650 | IntUartInterruptWrite, /* write */ |
---|
651 | IntUartSetAttributes, /* setAttributes */ |
---|
652 | NULL, /* stopRemoteTx */ |
---|
653 | NULL, /* startRemoteTx */ |
---|
654 | TERMIOS_TASK_DRIVEN /* mode */ |
---|
655 | }; |
---|
656 | |
---|
657 | /* open the port depending on the minor device number */ |
---|
658 | if ( ( minor >= 0 ) && ( minor < MAX_UART_INFO ) ) |
---|
659 | { |
---|
660 | info = &IntUartInfo[minor]; |
---|
661 | switch ( info->iomode ) |
---|
662 | { |
---|
663 | case TERMIOS_POLLED: |
---|
664 | status = rtems_termios_open(major, minor, arg, &IntUartPollCallbacks); |
---|
665 | break; |
---|
666 | case TERMIOS_IRQ_DRIVEN: |
---|
667 | status = rtems_termios_open(major, minor, arg, &IntUartIntrCallbacks); |
---|
668 | info->ttyp = args->iop->data1; |
---|
669 | break; |
---|
670 | case TERMIOS_TASK_DRIVEN: |
---|
671 | status = rtems_termios_open(major, minor, arg, &IntUartTaskCallbacks); |
---|
672 | info->ttyp = args->iop->data1; |
---|
673 | break; |
---|
674 | } |
---|
675 | } |
---|
676 | |
---|
677 | return( status ); |
---|
678 | } |
---|
679 | |
---|
680 | /*************************************************************************** |
---|
681 | Function : console_close |
---|
682 | |
---|
683 | Description : This closes the device via termios |
---|
684 | ***************************************************************************/ |
---|
685 | rtems_device_driver console_close( |
---|
686 | rtems_device_major_number major, |
---|
687 | rtems_device_minor_number minor, |
---|
688 | void * arg) |
---|
689 | { |
---|
690 | return(rtems_termios_close (arg)); |
---|
691 | } |
---|
692 | |
---|
693 | /****************** |
---|
694 | ********************************************************* |
---|
695 | Function : console_read |
---|
696 | |
---|
697 | Description : Read from the device via termios |
---|
698 | ***************************************************************************/ |
---|
699 | rtems_device_driver console_read( |
---|
700 | rtems_device_major_number major, |
---|
701 | rtems_device_minor_number minor, |
---|
702 | void * arg) |
---|
703 | { |
---|
704 | return(rtems_termios_read (arg)); |
---|
705 | } |
---|
706 | |
---|
707 | /*************************************************************************** |
---|
708 | Function : console_write |
---|
709 | |
---|
710 | Description : Write to the device via termios |
---|
711 | ***************************************************************************/ |
---|
712 | rtems_device_driver console_write( |
---|
713 | rtems_device_major_number major, |
---|
714 | rtems_device_minor_number minor, |
---|
715 | void * arg) |
---|
716 | { |
---|
717 | return(rtems_termios_write (arg)); |
---|
718 | } |
---|
719 | |
---|
720 | /*************************************************************************** |
---|
721 | Function : console_ioctl |
---|
722 | |
---|
723 | Description : Pass the IOCtl call to termios |
---|
724 | ***************************************************************************/ |
---|
725 | rtems_device_driver console_control( |
---|
726 | rtems_device_major_number major, |
---|
727 | rtems_device_minor_number minor, |
---|
728 | void * arg) |
---|
729 | { |
---|
730 | return( rtems_termios_ioctl (arg) ); |
---|
731 | } |
---|
732 | int DEBUG_OUTCHAR(int c) |
---|
733 | { |
---|
734 | if(c == '\n') |
---|
735 | DEBUG_OUTCHAR('\r'); |
---|
736 | _BSP_null_char(c); |
---|
737 | return c; |
---|
738 | } |
---|
739 | void DEBUG_OUTSTR(const char *msg) |
---|
740 | { |
---|
741 | while (*msg) |
---|
742 | DEBUG_OUTCHAR(*msg++); |
---|
743 | } |
---|
744 | void DEBUG_OUTNUM(int i) |
---|
745 | { |
---|
746 | int n; |
---|
747 | static const char map[] = "0123456789ABCDEF"; |
---|
748 | DEBUG_OUTCHAR(' '); |
---|
749 | for (n = 28 ; n >= 0 ; n -= 4) |
---|
750 | DEBUG_OUTCHAR(map[(i >> n) & 0xF]); |
---|
751 | } |
---|