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 | * The license and distribution terms for this file may be |
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7 | * found in the file LICENSE in this distribution or at |
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8 | * http://www.rtems.org/license/LICENSE. |
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9 | */ |
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10 | |
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11 | #include <stdio.h> |
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12 | #include <fcntl.h> |
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13 | #include <termios.h> |
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14 | #include <malloc.h> |
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15 | |
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16 | #include <rtems/libio.h> |
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17 | #include <rtems/termiostypes.h> |
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18 | #include <rtems/console.h> |
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19 | #include <rtems/bspIo.h> |
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20 | #include <bsp.h> |
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21 | |
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22 | #define UART_INTC0_IRQ_VECTOR(x) (64+13+(x)) |
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23 | |
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24 | #define MCF_UART_USR_ERROR ( MCF_UART_USR_RB | \ |
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25 | MCF_UART_USR_FE | \ |
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26 | MCF_UART_USR_PE | \ |
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27 | MCF_UART_USR_OE ) |
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28 | |
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29 | static ssize_t IntUartPollWrite(int minor, const char *buf, size_t len); |
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30 | static ssize_t IntUartInterruptWrite(int minor, const char *buf, size_t len); |
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31 | |
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32 | #define MAX_UART_INFO 3 |
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33 | #define RX_BUFFER_SIZE 512 |
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34 | |
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35 | struct IntUartInfoStruct |
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36 | { |
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37 | int iomode; |
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38 | volatile int uimr; |
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39 | int baud; |
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40 | int databits; |
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41 | int parity; |
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42 | int stopbits; |
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43 | int hwflow; |
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44 | int rx_in; |
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45 | int rx_out; |
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46 | char rx_buffer[RX_BUFFER_SIZE]; |
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47 | void *ttyp; |
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48 | }; |
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49 | |
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50 | struct IntUartInfoStruct IntUartInfo[MAX_UART_INFO]; |
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51 | |
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52 | /*************************************************************************** |
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53 | Function : IntUartSet |
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54 | |
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55 | Description : This updates the hardware UART settings. |
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56 | ***************************************************************************/ |
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57 | static void |
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58 | IntUartSet(int minor, int baud, int databits, int parity, int stopbits, |
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59 | int hwflow) |
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60 | { |
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61 | int divisor; |
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62 | uint32_t clock_speed; |
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63 | uint8_t umr1 = 0; |
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64 | uint8_t umr2 = 0; |
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65 | struct IntUartInfoStruct *info = &IntUartInfo[minor]; |
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66 | rtems_interrupt_level level=UART0_IRQ_LEVEL; |
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67 | |
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68 | rtems_interrupt_disable(level); |
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69 | |
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70 | /* disable interrupts, clear RTS line, and disable the UARTS */ |
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71 | MCF_UART_UIMR(minor) = 0; |
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72 | MCF_UART_UOP0(minor) = 1; |
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73 | MCF_UART_UCR(minor) = (MCF_UART_UCR_TX_DISABLED | MCF_UART_UCR_RX_DISABLED); |
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74 | |
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75 | /* save the current values */ |
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76 | info->uimr = 0; |
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77 | info->baud = baud; |
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78 | info->databits = databits; |
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79 | info->parity = parity; |
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80 | info->stopbits = stopbits; |
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81 | info->hwflow = hwflow; |
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82 | |
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83 | clock_speed = bsp_get_CPU_clock_speed(); |
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84 | /* determine the baud divisor value */ |
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85 | divisor = ((clock_speed) / (32 * baud)); |
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86 | if (divisor < 2) |
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87 | divisor = 2; |
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88 | |
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89 | /* check to see if doing hardware flow control */ |
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90 | if (hwflow) { |
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91 | /* set hardware flow options */ |
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92 | umr1 |= MCF_UART_UMR_RXRTS; |
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93 | umr2 |= MCF_UART_UMR_TXCTS; |
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94 | } |
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95 | |
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96 | /* determine the new umr values */ |
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97 | umr1 |= (parity | databits); |
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98 | |
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99 | #if 1 /* TZN: maybe needed for santec bus modul handling */ |
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100 | if (minor==STATIONS_PORT) |
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101 | umr2 |= (stopbits) | 0x20; /* 0x20 ... set TXRTS just4testing */ |
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102 | else |
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103 | umr2 |= (stopbits); |
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104 | #else |
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105 | umr2 |= (stopbits); |
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106 | #endif |
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107 | |
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108 | /* reset the uart */ |
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109 | MCF_UART_UCR(minor) = MCF_UART_UCR_RESET_ERROR; |
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110 | MCF_UART_UCR(minor) = MCF_UART_UCR_RESET_RX; |
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111 | MCF_UART_UCR(minor) = MCF_UART_UCR_RESET_TX; |
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112 | |
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113 | /* reset the uart mode register and update values */ |
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114 | MCF_UART_UCR(minor) = MCF_UART_UCR_RESET_MR; |
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115 | MCF_UART_UMR(minor) = umr1; |
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116 | MCF_UART_UMR(minor) = umr2; |
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117 | |
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118 | /* set the baud rate values */ |
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119 | MCF_UART_UCSR(minor) = |
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120 | (MCF_UART_UCSR_RCS_SYS_CLK | MCF_UART_UCSR_TCS_SYS_CLK); |
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121 | MCF_UART_UBG1(minor) = (divisor & 0xff00) >> 8; |
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122 | MCF_UART_UBG2(minor) = (divisor & 0x00ff); |
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123 | |
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124 | /* enable the uart */ |
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125 | MCF_UART_UCR(minor) = (MCF_UART_UCR_TX_ENABLED | MCF_UART_UCR_RX_ENABLED); |
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126 | |
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127 | /* check to see if interrupts need to be enabled */ |
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128 | if (info->iomode != TERMIOS_POLLED) { |
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129 | /* enable rx interrupts */ |
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130 | info->uimr |= MCF_UART_UIMR_RXRDY_FU; |
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131 | MCF_UART_UIMR(minor) = info->uimr; |
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132 | } |
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133 | |
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134 | /* check to see if doing hardware flow control */ |
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135 | if (hwflow) { |
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136 | /* assert the RTS line */ |
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137 | MCF_UART_UOP1(minor) = 1; |
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138 | } |
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139 | |
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140 | if (minor==STATIONS_PORT) //maybe needed for santec handling |
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141 | MCF_UART_UOP0(minor) = 1; |
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142 | |
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143 | rtems_interrupt_enable(level); |
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144 | |
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145 | } |
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146 | |
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147 | /*************************************************************************** |
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148 | Function : IntUartSetAttributes |
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149 | |
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150 | Description : This provides the hardware-dependent portion of tcsetattr(). |
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151 | value and sets it. At the moment this just sets the baud rate. |
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152 | |
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153 | Note: The highest baudrate is 115200 as this stays within |
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154 | an error of +/- 5% at 25MHz processor clock |
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155 | ***************************************************************************/ |
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156 | static int IntUartSetAttributes(int minor, const struct termios *t) |
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157 | { |
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158 | /* set default index values */ |
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159 | int baud = (int) 19200; |
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160 | int databits = (int) MCF_UART_UMR_BC_8; |
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161 | int parity = (int) MCF_UART_UMR_PM_NONE; |
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162 | int stopbits = (int) MCF_UART_UMR_SB_STOP_BITS_1; |
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163 | int hwflow = (int) 0; |
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164 | struct IntUartInfoStruct *info = &IntUartInfo[minor]; |
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165 | |
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166 | /* check to see if input is valid */ |
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167 | if (t != (const struct termios *) 0) { |
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168 | /* determine baud rate index */ |
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169 | baud = rtems_termios_baud_to_number(t->c_ospeed); |
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170 | |
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171 | /* determine data bits */ |
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172 | switch (t->c_cflag & CSIZE) { |
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173 | case CS5: |
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174 | databits = (int) MCF_UART_UMR_BC_5; |
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175 | break; |
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176 | case CS6: |
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177 | databits = (int) MCF_UART_UMR_BC_6; |
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178 | break; |
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179 | case CS7: |
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180 | databits = (int) MCF_UART_UMR_BC_7; |
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181 | break; |
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182 | case CS8: |
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183 | databits = (int) MCF_UART_UMR_BC_8; |
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184 | break; |
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185 | } |
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186 | |
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187 | /* determine if parity is enabled */ |
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188 | if (t->c_cflag & PARENB) { |
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189 | if (t->c_cflag & PARODD) { |
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190 | /* odd parity */ |
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191 | parity = (int) MCF_UART_UMR_PM_ODD; |
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192 | } else { |
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193 | /* even parity */ |
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194 | parity = (int) MCF_UART_UMR_PM_EVEN; |
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195 | } |
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196 | } |
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197 | |
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198 | /* determine stop bits */ |
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199 | if (t->c_cflag & CSTOPB) { |
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200 | /* two stop bits */ |
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201 | stopbits = (int) MCF_UART_UMR_SB_STOP_BITS_2; |
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202 | } |
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203 | |
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204 | /* check to see if hardware flow control */ |
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205 | if (t->c_cflag & CRTSCTS) { |
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206 | hwflow = 1; |
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207 | } |
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208 | } |
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209 | |
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210 | /* check to see if values have changed */ |
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211 | if ((baud != info->baud) || |
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212 | (databits != info->databits) || |
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213 | (parity != info->parity) || |
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214 | (stopbits != info->stopbits) || (hwflow != info->hwflow)) { |
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215 | |
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216 | /* call function to set values */ |
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217 | IntUartSet(minor, baud, databits, parity, stopbits, hwflow); |
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218 | } |
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219 | |
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220 | return (RTEMS_SUCCESSFUL); |
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221 | |
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222 | } |
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223 | |
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224 | /*************************************************************************** |
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225 | Function : IntUartInterruptHandler |
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226 | |
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227 | Description : This is the interrupt handler for the internal uart. It |
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228 | determines which channel caused the interrupt before queueing any received |
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229 | chars and dequeueing chars waiting for transmission. |
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230 | ***************************************************************************/ |
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231 | static rtems_isr IntUartInterruptHandler(rtems_vector_number v) |
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232 | { |
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233 | unsigned int chan = v - UART_INTC0_IRQ_VECTOR(0); |
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234 | struct IntUartInfoStruct *info = &IntUartInfo[chan]; |
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235 | |
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236 | |
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237 | /* check to see if received data */ |
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238 | if (MCF_UART_UISR(chan) & MCF_UART_UISR_RXRDY_FU) { |
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239 | |
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240 | #if 0 /* TZN ... just4testing */ |
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241 | if (MCF_GPIO_PORTTC&MCF_GPIO_PORTTC_PORTTC0) |
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242 | MCF_GPIO_PORTTC &= ~MCF_GPIO_PORTTC_PORTTC0; |
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243 | else |
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244 | MCF_GPIO_PORTTC |= MCF_GPIO_PORTTC_PORTTC0; |
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245 | #endif |
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246 | |
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247 | /* read data and put into the receive buffer */ |
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248 | while (MCF_UART_USR(chan) & MCF_UART_USR_RXRDY) { |
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249 | |
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250 | if (MCF_UART_USR(chan) & MCF_UART_USR_ERROR) { |
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251 | /* clear the error */ |
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252 | MCF_UART_UCR(chan) = MCF_UART_UCR_RESET_ERROR; |
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253 | } |
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254 | /* put data in rx buffer and check for errors */ |
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255 | info->rx_buffer[info->rx_in] = MCF_UART_URB(chan); |
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256 | |
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257 | /* update buffer values */ |
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258 | info->rx_in++; |
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259 | |
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260 | if (info->rx_in >= RX_BUFFER_SIZE) { |
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261 | info->rx_in = 0; |
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262 | } |
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263 | } |
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264 | /* Make sure the port has been opened */ |
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265 | if (info->ttyp) { |
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266 | |
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267 | /* check to see if task driven */ |
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268 | if (info->iomode == TERMIOS_TASK_DRIVEN) { |
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269 | /* notify rx task that rx buffer has data */ |
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270 | rtems_termios_rxirq_occured(info->ttyp); |
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271 | } else { |
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272 | /* Push up the received data */ |
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273 | rtems_termios_enqueue_raw_characters(info->ttyp, info->rx_buffer, |
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274 | info->rx_in); |
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275 | info->rx_in = 0; |
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276 | } |
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277 | } |
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278 | } |
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279 | |
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280 | /* check to see if data needs to be transmitted */ |
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281 | if ((info->uimr & MCF_UART_UIMR_TXRDY) && |
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282 | (MCF_UART_UISR(chan) & MCF_UART_UISR_TXRDY)) { |
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283 | |
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284 | /* disable tx interrupts */ |
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285 | info->uimr &= ~MCF_UART_UIMR_TXRDY; |
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286 | MCF_UART_UIMR(chan) = info->uimr; |
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287 | |
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288 | /* tell upper level that character has been sent */ |
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289 | if (info->ttyp) |
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290 | rtems_termios_dequeue_characters(info->ttyp, 1); |
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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 | Function : IntUartInitialize |
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296 | |
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297 | Description : This initialises the internal uart hardware for all |
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298 | internal uarts. If the internal uart is to be interrupt driven then the |
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299 | interrupt vectors are hooked. |
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300 | ***************************************************************************/ |
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301 | static void IntUartInitialize(void) |
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302 | { |
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303 | unsigned int chan; |
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304 | struct IntUartInfoStruct *info; |
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305 | rtems_isr_entry old_handler; |
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306 | rtems_interrupt_level level=UART0_IRQ_LEVEL; |
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307 | |
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308 | for (chan = 0; chan < MAX_UART_INFO; chan++) { |
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309 | info = &IntUartInfo[chan]; |
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310 | |
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311 | info->ttyp = NULL; |
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312 | info->rx_in = 0; |
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313 | info->rx_out = 0; |
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314 | info->baud = -1; |
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315 | info->databits = -1; |
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316 | info->parity = -1; |
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317 | info->stopbits = -1; |
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318 | info->hwflow = -1; |
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319 | info->iomode = TERMIOS_IRQ_DRIVEN; /*TZN, irq driven console io */ |
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320 | //info->iomode = TERMIOS_POLLED; /*TZN, just4testint, use polling mode for all UARTS */ |
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321 | |
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322 | MCF_UART_UACR(chan) = 0; |
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323 | MCF_UART_UIMR(chan) = 0; |
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324 | if (info->iomode != TERMIOS_POLLED) { |
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325 | rtems_interrupt_catch(IntUartInterruptHandler, |
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326 | UART_INTC0_IRQ_VECTOR(chan), &old_handler); |
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327 | } |
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328 | |
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329 | /* set uart default values */ |
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330 | IntUartSetAttributes(chan, NULL); |
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331 | |
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332 | /* unmask interrupt */ |
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333 | rtems_interrupt_disable(level); |
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334 | switch (chan) { |
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335 | case 0: |
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336 | MCF_INTC0_ICR13 = MCF_INTC_ICR_IL(UART0_IRQ_LEVEL) | |
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337 | MCF_INTC_ICR_IP(UART0_IRQ_PRIORITY); |
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338 | MCF_INTC0_IMRL &= ~(MCF_INTC_IMRL_MASK13 | MCF_INTC_IMRL_MASKALL); |
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339 | break; |
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340 | |
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341 | case 1: |
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342 | MCF_INTC0_ICR14 = MCF_INTC_ICR_IL(UART1_IRQ_LEVEL) | |
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343 | MCF_INTC_ICR_IP(UART1_IRQ_PRIORITY); |
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344 | MCF_INTC0_IMRL &= ~(MCF_INTC_IMRL_MASK14 | MCF_INTC_IMRL_MASKALL); |
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345 | break; |
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346 | |
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347 | case 2: |
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348 | MCF_INTC0_ICR15 = MCF_INTC_ICR_IL(UART2_IRQ_LEVEL) | |
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349 | MCF_INTC_ICR_IP(UART2_IRQ_PRIORITY); |
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350 | MCF_INTC0_IMRL &= ~(MCF_INTC_IMRL_MASK15 | MCF_INTC_IMRL_MASKALL); |
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351 | break; |
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352 | } |
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353 | rtems_interrupt_enable(level); |
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354 | |
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355 | } /* of chan loop */ |
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356 | |
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357 | } /* IntUartInitialise */ |
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358 | |
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359 | /*************************************************************************** |
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360 | Function : IntUartInterruptWrite |
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361 | |
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362 | Description : This writes a single character to the appropriate uart |
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363 | channel. This is either called during an interrupt or in the user's task |
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364 | to initiate a transmit sequence. Calling this routine enables Tx |
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365 | interrupts. |
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366 | ***************************************************************************/ |
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367 | static ssize_t IntUartInterruptWrite(int minor, const char *buf, size_t len) |
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368 | { |
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369 | if (len > 0) { |
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370 | /* write out character */ |
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371 | MCF_UART_UTB(minor) = *buf; |
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372 | |
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373 | /* enable tx interrupt */ |
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374 | IntUartInfo[minor].uimr |= MCF_UART_UIMR_TXRDY; |
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375 | MCF_UART_UIMR(minor) = IntUartInfo[minor].uimr; |
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376 | } |
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377 | |
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378 | return (0); |
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379 | } |
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380 | |
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381 | /*************************************************************************** |
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382 | Function : IntUartInterruptOpen |
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383 | |
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384 | Description : This enables interrupts when the tty is opened. |
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385 | ***************************************************************************/ |
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386 | static int IntUartInterruptOpen(int major, int minor, void *arg) |
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387 | { |
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388 | struct IntUartInfoStruct *info = &IntUartInfo[minor]; |
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389 | |
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390 | /* enable the uart */ |
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391 | MCF_UART_UCR(minor) = (MCF_UART_UCR_TX_ENABLED | MCF_UART_UCR_RX_ENABLED); |
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392 | |
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393 | /* check to see if interrupts need to be enabled */ |
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394 | if (info->iomode != TERMIOS_POLLED) { |
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395 | /* enable rx interrupts */ |
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396 | info->uimr |= MCF_UART_UIMR_RXRDY_FU; |
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397 | MCF_UART_UIMR(minor) = info->uimr; |
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398 | } |
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399 | |
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400 | /* check to see if doing hardware flow control */ |
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401 | if (info->hwflow) { |
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402 | /* assert the RTS line */ |
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403 | MCF_UART_UOP1(minor) = 1; |
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404 | } |
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405 | |
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406 | return (0); |
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407 | } |
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408 | |
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409 | /*************************************************************************** |
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410 | Function : IntUartInterruptClose |
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411 | |
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412 | Description : This disables interrupts when the tty is closed. |
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413 | ***************************************************************************/ |
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414 | static int IntUartInterruptClose(int major, int minor, void *arg) |
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415 | { |
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416 | struct IntUartInfoStruct *info = &IntUartInfo[minor]; |
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417 | |
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418 | /* disable the interrupts and the uart */ |
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419 | MCF_UART_UIMR(minor) = 0; |
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420 | MCF_UART_UCR(minor) = (MCF_UART_UCR_TX_DISABLED | MCF_UART_UCR_RX_DISABLED); |
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421 | |
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422 | /* reset values */ |
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423 | info->ttyp = NULL; |
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424 | info->uimr = 0; |
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425 | info->rx_in = 0; |
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426 | info->rx_out = 0; |
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427 | |
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428 | return (0); |
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429 | } |
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430 | |
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431 | /*************************************************************************** |
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432 | Function : IntUartTaskRead |
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433 | |
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434 | Description : This reads all available characters from the internal uart |
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435 | and places them into the termios buffer. The rx interrupts will be |
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436 | re-enabled after all data has been read. |
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437 | ***************************************************************************/ |
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438 | static int IntUartTaskRead(int minor) |
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439 | { |
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440 | char buffer[RX_BUFFER_SIZE]; |
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441 | int count; |
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442 | int rx_in; |
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443 | int index = 0; |
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444 | struct IntUartInfoStruct *info = &IntUartInfo[minor]; |
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445 | |
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446 | /* determine number of values to copy out */ |
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447 | rx_in = info->rx_in; |
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448 | if (info->rx_out <= rx_in) { |
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449 | count = rx_in - info->rx_out; |
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450 | } else { |
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451 | count = (RX_BUFFER_SIZE - info->rx_out) + rx_in; |
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452 | } |
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453 | |
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454 | /* copy data into local buffer from rx buffer */ |
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455 | while ((index < count) && (index < RX_BUFFER_SIZE)) { |
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456 | /* copy data byte */ |
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457 | buffer[index] = info->rx_buffer[info->rx_out]; |
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458 | index++; |
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459 | |
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460 | /* increment rx buffer values */ |
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461 | info->rx_out++; |
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462 | if (info->rx_out >= RX_BUFFER_SIZE) { |
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463 | info->rx_out = 0; |
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464 | } |
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465 | } |
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466 | |
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467 | /* check to see if buffer is not empty */ |
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468 | if (count > 0) { |
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469 | /* set characters into termios buffer */ |
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470 | rtems_termios_enqueue_raw_characters(info->ttyp, buffer, count); |
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471 | } |
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472 | |
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473 | return (EOF); |
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474 | } |
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475 | |
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476 | /*************************************************************************** |
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477 | Function : IntUartPollRead |
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478 | |
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479 | Description : This reads a character from the internal uart. It returns |
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480 | to the caller without blocking if not character is waiting. |
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481 | ***************************************************************************/ |
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482 | static |
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483 | int IntUartPollRead(int minor) |
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484 | { |
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485 | if ((MCF_UART_USR(minor) & MCF_UART_USR_RXRDY) == 0) |
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486 | return (-1); |
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487 | |
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488 | return (MCF_UART_URB(minor)); |
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489 | } |
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490 | |
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491 | /*************************************************************************** |
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492 | Function : IntUartPollWrite |
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493 | |
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494 | Description : This writes out each character in the buffer to the |
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495 | appropriate internal uart channel waiting till each one is sucessfully |
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496 | transmitted. |
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497 | ***************************************************************************/ |
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498 | static ssize_t IntUartPollWrite(int minor, const char *buf, size_t len) |
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499 | { |
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500 | /* loop over buffer */ |
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501 | while (len--) { |
---|
502 | /* block until we can transmit */ |
---|
503 | while ((MCF_UART_USR(minor) & MCF_UART_USR_TXRDY) == 0) |
---|
504 | continue; |
---|
505 | /* transmit data byte */ |
---|
506 | MCF_UART_UTB(minor) = *buf++; |
---|
507 | } |
---|
508 | return (0); |
---|
509 | } |
---|
510 | |
---|
511 | /*************************************************************************** |
---|
512 | Function : console_initialize |
---|
513 | |
---|
514 | Description : This initialises termios, both sets of uart hardware before |
---|
515 | registering /dev/tty devices for each channel and the system /dev/console. |
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516 | ***************************************************************************/ |
---|
517 | rtems_device_driver console_initialize(rtems_device_major_number major, |
---|
518 | rtems_device_minor_number minor, |
---|
519 | void *arg) |
---|
520 | { |
---|
521 | rtems_status_code status; |
---|
522 | |
---|
523 | /* Set up TERMIOS */ |
---|
524 | rtems_termios_initialize(); |
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525 | |
---|
526 | /* set io modes for the different channels and initialize device */ |
---|
527 | IntUartInitialize(); |
---|
528 | |
---|
529 | /* Register the console port */ |
---|
530 | status = rtems_io_register_name("/dev/console", major, CONSOLE_PORT); |
---|
531 | if (status != RTEMS_SUCCESSFUL) { |
---|
532 | rtems_fatal_error_occurred(status); |
---|
533 | } |
---|
534 | |
---|
535 | /* Register the RS485 port to communicate with SANTEC stations */ |
---|
536 | if ((STATIONS_PORT!=CONSOLE_PORT) && (STATIONS_PORT!=BLUETOOTH_PORT)) { |
---|
537 | status = rtems_io_register_name("/dev/tty00", major,STATIONS_PORT); |
---|
538 | if (status != RTEMS_SUCCESSFUL) { |
---|
539 | rtems_fatal_error_occurred(status); |
---|
540 | } |
---|
541 | } |
---|
542 | else { |
---|
543 | status=RTEMS_TOO_MANY; |
---|
544 | rtems_fatal_error_occurred(status); |
---|
545 | } |
---|
546 | |
---|
547 | /* Register the Bluetooth port */ |
---|
548 | if ((BLUETOOTH_PORT!=CONSOLE_PORT) && (BLUETOOTH_PORT!=STATIONS_PORT)) { |
---|
549 | status = rtems_io_register_name("/dev/tty01", major, BLUETOOTH_PORT); |
---|
550 | if (status != RTEMS_SUCCESSFUL) { |
---|
551 | rtems_fatal_error_occurred(status); |
---|
552 | } |
---|
553 | } |
---|
554 | else { |
---|
555 | status=RTEMS_TOO_MANY; |
---|
556 | rtems_fatal_error_occurred(status); |
---|
557 | } |
---|
558 | |
---|
559 | return (RTEMS_SUCCESSFUL); |
---|
560 | } |
---|
561 | |
---|
562 | /*************************************************************************** |
---|
563 | Function : console_open |
---|
564 | |
---|
565 | Description : This actually opens the device depending on the minor |
---|
566 | number set during initialisation. The device specific access routines are |
---|
567 | passed to termios when the devices is opened depending on whether it is |
---|
568 | polled or not. |
---|
569 | ***************************************************************************/ |
---|
570 | rtems_device_driver console_open(rtems_device_major_number major, |
---|
571 | rtems_device_minor_number minor, void *arg) |
---|
572 | { |
---|
573 | rtems_status_code status = RTEMS_INVALID_NUMBER; |
---|
574 | rtems_libio_open_close_args_t *args = (rtems_libio_open_close_args_t *) arg; |
---|
575 | struct IntUartInfoStruct *info; |
---|
576 | |
---|
577 | static const rtems_termios_callbacks IntUartPollCallbacks = { |
---|
578 | NULL, /* firstOpen */ |
---|
579 | NULL, /* lastClose */ |
---|
580 | IntUartPollRead, /* pollRead */ |
---|
581 | IntUartPollWrite, /* write */ |
---|
582 | IntUartSetAttributes, /* setAttributes */ |
---|
583 | NULL, /* stopRemoteTx */ |
---|
584 | NULL, /* startRemoteTx */ |
---|
585 | TERMIOS_POLLED /* mode */ |
---|
586 | }; |
---|
587 | static const rtems_termios_callbacks IntUartIntrCallbacks = { |
---|
588 | IntUartInterruptOpen, /* firstOpen */ |
---|
589 | IntUartInterruptClose, /* lastClose */ |
---|
590 | NULL, /* pollRead */ |
---|
591 | IntUartInterruptWrite, /* write */ |
---|
592 | IntUartSetAttributes, /* setAttributes */ |
---|
593 | NULL, /* stopRemoteTx */ |
---|
594 | NULL, /* startRemoteTx */ |
---|
595 | TERMIOS_IRQ_DRIVEN /* mode */ |
---|
596 | }; |
---|
597 | |
---|
598 | static const rtems_termios_callbacks IntUartTaskCallbacks = { |
---|
599 | IntUartInterruptOpen, /* firstOpen */ |
---|
600 | IntUartInterruptClose, /* lastClose */ |
---|
601 | IntUartTaskRead, /* pollRead */ |
---|
602 | IntUartInterruptWrite, /* write */ |
---|
603 | IntUartSetAttributes, /* setAttributes */ |
---|
604 | NULL, /* stopRemoteTx */ |
---|
605 | NULL, /* startRemoteTx */ |
---|
606 | TERMIOS_TASK_DRIVEN /* mode */ |
---|
607 | }; |
---|
608 | |
---|
609 | /* open the port depending on the minor device number */ |
---|
610 | if ((minor >= 0) && (minor < MAX_UART_INFO)) { |
---|
611 | info = &IntUartInfo[minor]; |
---|
612 | switch (info->iomode) { |
---|
613 | case TERMIOS_POLLED: |
---|
614 | status = rtems_termios_open(major, minor, arg, &IntUartPollCallbacks); |
---|
615 | break; |
---|
616 | case TERMIOS_IRQ_DRIVEN: |
---|
617 | status = rtems_termios_open(major, minor, arg, &IntUartIntrCallbacks); |
---|
618 | info->ttyp = args->iop->data1; |
---|
619 | break; |
---|
620 | case TERMIOS_TASK_DRIVEN: |
---|
621 | status = rtems_termios_open(major, minor, arg, &IntUartTaskCallbacks); |
---|
622 | info->ttyp = args->iop->data1; |
---|
623 | break; |
---|
624 | } |
---|
625 | } |
---|
626 | |
---|
627 | if (status == RTEMS_SUCCESSFUL) { |
---|
628 | /* |
---|
629 | * Reset the default baudrate. |
---|
630 | */ |
---|
631 | struct termios term; |
---|
632 | |
---|
633 | if (tcgetattr(STDIN_FILENO, &term) >= 0) { |
---|
634 | term.c_cflag &= ~(CSIZE); |
---|
635 | term.c_cflag |= CS8; |
---|
636 | term.c_ispeed = B115200; |
---|
637 | term.c_ospeed = B115200; |
---|
638 | tcsetattr(STDIN_FILENO, TCSANOW, &term); |
---|
639 | } |
---|
640 | } |
---|
641 | |
---|
642 | return (status); |
---|
643 | } |
---|
644 | |
---|
645 | /*************************************************************************** |
---|
646 | Function : console_close |
---|
647 | |
---|
648 | Description : This closes the device via termios |
---|
649 | ***************************************************************************/ |
---|
650 | rtems_device_driver console_close(rtems_device_major_number major, |
---|
651 | rtems_device_minor_number minor, void *arg) |
---|
652 | { |
---|
653 | return (rtems_termios_close(arg)); |
---|
654 | } |
---|
655 | |
---|
656 | /****************** |
---|
657 | ********************************************************* |
---|
658 | Function : console_read |
---|
659 | |
---|
660 | Description : Read from the device via termios |
---|
661 | ***************************************************************************/ |
---|
662 | rtems_device_driver console_read(rtems_device_major_number major, |
---|
663 | rtems_device_minor_number minor, void *arg) |
---|
664 | { |
---|
665 | return (rtems_termios_read(arg)); |
---|
666 | } |
---|
667 | |
---|
668 | /*************************************************************************** |
---|
669 | Function : console_write |
---|
670 | |
---|
671 | Description : Write to the device via termios |
---|
672 | ***************************************************************************/ |
---|
673 | rtems_device_driver console_write(rtems_device_major_number major, |
---|
674 | rtems_device_minor_number minor, void *arg) |
---|
675 | { |
---|
676 | return (rtems_termios_write(arg)); |
---|
677 | } |
---|
678 | |
---|
679 | /*************************************************************************** |
---|
680 | Function : console_ioctl |
---|
681 | |
---|
682 | Description : Pass the IOCtl call to termios |
---|
683 | ***************************************************************************/ |
---|
684 | rtems_device_driver console_control(rtems_device_major_number major, |
---|
685 | rtems_device_minor_number minor, |
---|
686 | void *arg) |
---|
687 | { |
---|
688 | return (rtems_termios_ioctl(arg)); |
---|
689 | } |
---|