[3c7ed6b] | 1 | /** |
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| 2 | * @file console.c |
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| 3 | * |
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| 4 | * This file contains the GBA console I/O package. |
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| 5 | */ |
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| 6 | /* |
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| 7 | * RTEMS GBA BSP |
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| 8 | * |
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| 9 | * Copyright (c) 2004 Markku Puro <markku.puro@kopteri.net> |
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| 10 | * |
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| 11 | * The license and distribution terms for this file may be |
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| 12 | * found in found in the file LICENSE in this distribution or at |
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| 13 | * http://www.rtems.com/license/LICENSE. |
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| 14 | * |
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| 15 | * $Id$ |
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| 16 | */ |
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| 17 | |
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| 18 | #include <stdio.h> |
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| 19 | #include <stdlib.h> |
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| 20 | #include <unistd.h> |
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| 21 | |
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| 22 | #include <bsp.h> |
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| 23 | #include <rtems/bspIo.h> |
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| 24 | #include <rtems/libio.h> |
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| 25 | #include <rtems/termiostypes.h> |
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| 26 | #include <termios.h> |
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| 27 | #include <irq.h> |
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| 28 | #include <gba.h> |
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| 29 | #include <conio.h> |
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| 30 | |
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| 31 | /** |
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| 32 | * @brief gba_pollRead function read char |
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| 33 | * |
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| 34 | * @param minor unused |
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| 35 | * @return character code |
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| 36 | */ |
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| 37 | static int gba_pollRead(int minor) |
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| 38 | { |
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| 39 | return(gba_getch()); |
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| 40 | } |
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| 41 | |
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| 42 | /** |
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| 43 | * @brief gba_write function writes chars |
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| 44 | * |
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| 45 | * Input parameters: minor code, buffer pointer and lenght |
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| 46 | * @param minor unused |
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| 47 | * @param *buf buffer pointer |
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| 48 | * @param len lenght of buffer |
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| 49 | * @return character code |
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| 50 | * |
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| 51 | */ |
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[c193baad] | 52 | static ssize_t gba_write(int minor, const char *buf, size_t len) |
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[3c7ed6b] | 53 | { |
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| 54 | int i; |
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| 55 | |
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| 56 | for (i=0;i<len;i++) { |
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| 57 | gba_putch((unsigned short)buf[i]); |
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| 58 | } |
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| 59 | return len; |
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| 60 | } |
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| 61 | |
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| 62 | /** |
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| 63 | * @brief gba_setAttributes function is empty |
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| 64 | * |
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| 65 | * @param minor unused |
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| 66 | * @param *t unused |
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| 67 | * @return constant 0 |
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| 68 | */ |
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| 69 | static int gba_setAttributes(int minor, const struct termios *t) |
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| 70 | { |
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| 71 | return 0; |
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| 72 | } |
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| 73 | |
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| 74 | /** BSP_output_char for printk support */ |
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| 75 | BSP_output_char_function_type BSP_output_char = (BSP_output_char_function_type) gba_putch; |
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| 76 | /** BSP_poll_char for printk support */ |
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[6789d70] | 77 | BSP_polling_getchar_function_type BSP_poll_char = gba_getch; |
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[3c7ed6b] | 78 | |
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| 79 | /** |
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| 80 | * @brief Console device driver INITIALIZE entry point |
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| 81 | * |
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| 82 | * Initilizes the I/O console driver. |
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| 83 | * |
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| 84 | * @param major diver major number |
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| 85 | * @param minor driver minor mumber |
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| 86 | * @param *arg pointer to parameters |
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| 87 | * @return status code |
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| 88 | */ |
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| 89 | rtems_device_driver |
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| 90 | console_initialize(rtems_device_major_number major, |
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| 91 | rtems_device_minor_number minor, |
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| 92 | void *arg) |
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| 93 | { |
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| 94 | rtems_status_code status; |
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| 95 | |
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| 96 | /* Set up TERMIOS */ |
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| 97 | rtems_termios_initialize (); |
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| 98 | |
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| 99 | /* Do device-specific initialization */ |
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| 100 | /* Allready done in bspstart.c -> gba_textmode(CO60); */ |
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| 101 | |
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| 102 | /* Register the device */ |
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| 103 | status = rtems_io_register_name ("/dev/console", major, 0); |
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| 104 | if (status != RTEMS_SUCCESSFUL) { |
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| 105 | printk("Error registering console device!\n"); |
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| 106 | rtems_fatal_error_occurred (status); |
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| 107 | } |
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| 108 | |
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| 109 | printk("Initialized GBA console\n\n"); |
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| 110 | |
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| 111 | return RTEMS_SUCCESSFUL; |
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| 112 | } |
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| 113 | |
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| 114 | /** |
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| 115 | * @brief console_first_open function is empty |
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| 116 | * |
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| 117 | * @param major diver major number |
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| 118 | * @param minor driver minor mumber |
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| 119 | * @param *arg pointer to parameters |
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| 120 | * @return status code |
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| 121 | */ |
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| 122 | static int console_first_open(int major, int minor, void *arg) |
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| 123 | { |
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| 124 | return 0; |
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| 125 | } |
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| 126 | |
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| 127 | /** |
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| 128 | * @brief console_last_close function is empty |
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| 129 | * |
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| 130 | * @param major diver major number |
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| 131 | * @param minor driver minor mumber |
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| 132 | * @param *arg pointer to parameters |
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| 133 | * @return status code |
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| 134 | */ |
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| 135 | static int console_last_close(int major, int minor, void *arg) |
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| 136 | { |
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| 137 | return 0; |
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| 138 | } |
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| 139 | |
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| 140 | |
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| 141 | /** |
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| 142 | * @brief Console device driver OPEN entry point |
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| 143 | * |
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| 144 | * @param major diver major number |
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| 145 | * @param minor driver minor mumber |
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| 146 | * @param *arg pointer to parameters |
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| 147 | * @return status code |
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| 148 | */ |
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| 149 | rtems_device_driver |
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| 150 | console_open(rtems_device_major_number major, |
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| 151 | rtems_device_minor_number minor, |
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| 152 | void *arg) |
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| 153 | { |
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| 154 | rtems_status_code status; |
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| 155 | static rtems_termios_callbacks cb = |
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| 156 | { |
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| 157 | console_first_open, /* firstOpen */ |
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| 158 | console_last_close, /* lastClose */ |
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| 159 | gba_pollRead, /* pollRead */ |
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| 160 | gba_write, /* write */ |
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| 161 | gba_setAttributes, /* setAttributes */ |
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| 162 | NULL, /* stopRemoteTx */ |
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| 163 | NULL, /* startRemoteTx */ |
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| 164 | TERMIOS_POLLED /* 1 = outputUsesInterrupts */ |
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| 165 | }; |
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| 166 | |
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| 167 | status = rtems_termios_open (major, minor, arg, &cb); |
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| 168 | |
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| 169 | if (status != RTEMS_SUCCESSFUL) { |
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| 170 | printk("Error openning console device\n"); |
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| 171 | return status; |
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| 172 | } |
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| 173 | |
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| 174 | return RTEMS_SUCCESSFUL; |
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| 175 | } |
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| 176 | |
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| 177 | /** |
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| 178 | * @brief Console device driver CLOSE entry point |
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| 179 | * |
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| 180 | * @param major diver major number |
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| 181 | * @param minor driver minor mumber |
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| 182 | * @param *arg pointer to parameters |
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| 183 | * @return status code |
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| 184 | */ |
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| 185 | rtems_device_driver |
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| 186 | console_close(rtems_device_major_number major, |
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| 187 | rtems_device_minor_number minor, |
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| 188 | void *arg) |
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| 189 | { |
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| 190 | rtems_device_driver res = RTEMS_SUCCESSFUL; |
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| 191 | |
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| 192 | res = rtems_termios_close (arg); |
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| 193 | |
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| 194 | return res; |
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| 195 | } |
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| 196 | |
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| 197 | /** |
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| 198 | * @brief Console device driver READ entry point. |
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| 199 | * |
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| 200 | * Read characters from the I/O console. |
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| 201 | * |
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| 202 | * @param major diver major number |
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| 203 | * @param minor driver minor mumber |
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| 204 | * @param *arg pointer to parameters |
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| 205 | * @return status code |
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| 206 | */ |
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| 207 | rtems_device_driver |
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| 208 | console_read(rtems_device_major_number major, |
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| 209 | rtems_device_minor_number minor, |
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| 210 | void *arg) |
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| 211 | { |
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| 212 | |
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| 213 | return rtems_termios_read (arg); |
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| 214 | |
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| 215 | } |
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| 216 | |
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| 217 | /** |
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| 218 | * @brief Console device driver WRITE entry point. |
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| 219 | * |
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| 220 | * Write characters to the I/O console. |
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| 221 | * |
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| 222 | * @param major diver major number |
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| 223 | * @param minor driver minor mumber |
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| 224 | * @param *arg pointer to parameters |
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| 225 | * @return status code |
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| 226 | */ |
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| 227 | rtems_device_driver |
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| 228 | console_write(rtems_device_major_number major, |
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| 229 | rtems_device_minor_number minor, |
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| 230 | void *arg) |
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| 231 | { |
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| 232 | return rtems_termios_write (arg); |
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| 233 | } |
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| 234 | |
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| 235 | /** |
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| 236 | * @brief Handle ioctl request. |
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| 237 | * |
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| 238 | * @param major diver major number |
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| 239 | * @param minor driver minor mumber |
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| 240 | * @param *arg pointer to parameters |
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| 241 | * @return status code |
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| 242 | */ |
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| 243 | rtems_device_driver |
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| 244 | console_control(rtems_device_major_number major, |
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| 245 | rtems_device_minor_number minor, |
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| 246 | void *arg |
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| 247 | ) |
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| 248 | { |
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| 249 | return rtems_termios_ioctl (arg); |
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| 250 | } |
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