1 | /*
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2 | * Copyright (C) 2006 Jakub Jermar
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3 | * All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without
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6 | * modification, are permitted provided that the following conditions
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7 | * are met:
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8 | *
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9 | * - Redistributions of source code must retain the above copyright
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10 | * notice, this list of conditions and the following disclaimer.
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11 | * - Redistributions in binary form must reproduce the above copyright
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12 | * notice, this list of conditions and the following disclaimer in the
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13 | * documentation and/or other materials provided with the distribution.
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14 | * - The name of the author may not be used to endorse or promote products
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15 | * derived from this software without specific prior written permission.
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16 | *
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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27 | */
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28 |
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29 | /** @addtogroup genarch
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30 | * @{
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31 | */
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32 | /**
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33 | * @file
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34 | * @brief Key processing.
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35 | */
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36 |
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37 | #include <genarch/kbd/key.h>
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38 | #include <genarch/kbd/scanc.h>
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39 | #ifdef CONFIG_I8042
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40 | #include <genarch/kbd/scanc_pc.h>
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41 | #endif
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42 | #if (defined(CONFIG_Z8530) || defined(CONFIG_NS16550))
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43 | #include <genarch/kbd/scanc_sun.h>
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44 | #endif
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45 | #include <synch/spinlock.h>
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46 | #include <console/chardev.h>
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47 | #include <typedefs.h>
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48 | #include <macros.h>
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49 |
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50 | #define PRESSED_SHIFT (1<<0)
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51 | #define PRESSED_CAPSLOCK (1<<1)
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52 | #define LOCKED_CAPSLOCK (1<<0)
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53 |
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54 | #define ACTIVE_READ_BUFF_SIZE 16 /* Must be power of 2 */
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55 |
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56 | static uint8_t active_read_buff[ACTIVE_READ_BUFF_SIZE];
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57 |
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58 | SPINLOCK_INITIALIZE(keylock); /**< keylock protects keyflags and lockflags. */
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59 | static volatile int keyflags; /**< Tracking of multiple keypresses. */
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60 | static volatile int lockflags; /**< Tracking of multiple keys lockings. */
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61 |
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62 | /** Process release of key.
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63 | *
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64 | * @param sc Scancode of the key being released.
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65 | */
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66 | void key_released(uint8_t sc)
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67 | {
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68 | spinlock_lock(&keylock);
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69 | switch (sc) {
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70 | case SC_LSHIFT:
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71 | case SC_RSHIFT:
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72 | keyflags &= ~PRESSED_SHIFT;
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73 | break;
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74 | case SC_CAPSLOCK:
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75 | keyflags &= ~PRESSED_CAPSLOCK;
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76 | if (lockflags & LOCKED_CAPSLOCK)
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77 | lockflags &= ~LOCKED_CAPSLOCK;
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78 | else
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79 | lockflags |= LOCKED_CAPSLOCK;
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80 | break;
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81 | default:
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82 | break;
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83 | }
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84 | spinlock_unlock(&keylock);
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85 | }
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86 |
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87 | /** Process keypress.
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88 | *
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89 | * @param sc Scancode of the key being pressed.
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90 | */
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91 | void key_pressed(uint8_t sc)
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92 | {
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93 | char *map = sc_primary_map;
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94 | char ascii = sc_primary_map[sc];
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95 | bool shift, capslock;
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96 | bool letter = false;
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97 |
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98 | spinlock_lock(&keylock);
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99 | switch (sc) {
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100 | case SC_LSHIFT:
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101 | case SC_RSHIFT:
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102 | keyflags |= PRESSED_SHIFT;
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103 | break;
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104 | case SC_CAPSLOCK:
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105 | keyflags |= PRESSED_CAPSLOCK;
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106 | break;
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107 | case SC_SPEC_ESCAPE:
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108 | break;
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109 | case SC_LEFTARR:
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110 | chardev_push_character(&kbrd, 0x1b);
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111 | chardev_push_character(&kbrd, 0x5b);
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112 | chardev_push_character(&kbrd, 0x44);
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113 | break;
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114 | case SC_RIGHTARR:
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115 | chardev_push_character(&kbrd, 0x1b);
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116 | chardev_push_character(&kbrd, 0x5b);
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117 | chardev_push_character(&kbrd, 0x43);
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118 | break;
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119 | case SC_UPARR:
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120 | chardev_push_character(&kbrd, 0x1b);
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121 | chardev_push_character(&kbrd, 0x5b);
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122 | chardev_push_character(&kbrd, 0x41);
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123 | break;
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124 | case SC_DOWNARR:
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125 | chardev_push_character(&kbrd, 0x1b);
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126 | chardev_push_character(&kbrd, 0x5b);
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127 | chardev_push_character(&kbrd, 0x42);
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128 | break;
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129 | case SC_HOME:
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130 | chardev_push_character(&kbrd, 0x1b);
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131 | chardev_push_character(&kbrd, 0x4f);
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132 | chardev_push_character(&kbrd, 0x48);
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133 | break;
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134 | case SC_END:
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135 | chardev_push_character(&kbrd, 0x1b);
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136 | chardev_push_character(&kbrd, 0x4f);
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137 | chardev_push_character(&kbrd, 0x46);
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138 | break;
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139 | case SC_DELETE:
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140 | chardev_push_character(&kbrd, 0x1b);
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141 | chardev_push_character(&kbrd, 0x5b);
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142 | chardev_push_character(&kbrd, 0x33);
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143 | chardev_push_character(&kbrd, 0x7e);
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144 | break;
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145 | default:
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146 | letter = is_lower(ascii);
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147 | capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
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148 | shift = keyflags & PRESSED_SHIFT;
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149 | if (letter && capslock)
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150 | shift = !shift;
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151 | if (shift)
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152 | map = sc_secondary_map;
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153 | chardev_push_character(&kbrd, map[sc]);
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154 | break;
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155 | }
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156 | spinlock_unlock(&keylock);
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157 | }
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158 |
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159 | uint8_t active_read_buff_read(void)
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160 | {
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161 | static int i=0;
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162 | i &= (ACTIVE_READ_BUFF_SIZE-1);
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163 | if(!active_read_buff[i]) {
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164 | return 0;
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165 | }
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166 | return active_read_buff[i++];
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167 | }
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168 |
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169 | void active_read_buff_write(uint8_t ch)
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170 | {
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171 | static int i=0;
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172 | active_read_buff[i] = ch;
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173 | i++;
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174 | i &= (ACTIVE_READ_BUFF_SIZE-1);
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175 | active_read_buff[i]=0;
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176 | }
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177 |
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178 |
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179 | void active_read_key_pressed(uint8_t sc)
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180 | {
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181 | char *map = sc_primary_map;
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182 | char ascii = sc_primary_map[sc];
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183 | bool shift, capslock;
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184 | bool letter = false;
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185 |
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186 | /*spinlock_lock(&keylock);*/
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187 | switch (sc) {
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188 | case SC_LSHIFT:
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189 | case SC_RSHIFT:
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190 | keyflags |= PRESSED_SHIFT;
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191 | break;
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192 | case SC_CAPSLOCK:
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193 | keyflags |= PRESSED_CAPSLOCK;
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194 | break;
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195 | case SC_SPEC_ESCAPE:
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196 | break;
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197 | case SC_LEFTARR:
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198 | active_read_buff_write(0x1b);
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199 | active_read_buff_write(0x5b);
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200 | active_read_buff_write(0x44);
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201 | break;
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202 | case SC_RIGHTARR:
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203 | active_read_buff_write(0x1b);
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204 | active_read_buff_write(0x5b);
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205 | active_read_buff_write(0x43);
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206 | break;
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207 | case SC_UPARR:
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208 | active_read_buff_write(0x1b);
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209 | active_read_buff_write(0x5b);
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210 | active_read_buff_write(0x41);
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211 | break;
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212 | case SC_DOWNARR:
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213 | active_read_buff_write(0x1b);
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214 | active_read_buff_write(0x5b);
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215 | active_read_buff_write(0x42);
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216 | break;
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217 | case SC_HOME:
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218 | active_read_buff_write(0x1b);
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219 | active_read_buff_write(0x4f);
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220 | active_read_buff_write(0x48);
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221 | break;
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222 | case SC_END:
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223 | active_read_buff_write(0x1b);
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224 | active_read_buff_write(0x4f);
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225 | active_read_buff_write(0x46);
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226 | break;
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227 | case SC_DELETE:
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228 | active_read_buff_write(0x1b);
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229 | active_read_buff_write(0x5b);
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230 | active_read_buff_write(0x33);
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231 | active_read_buff_write(0x7e);
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232 | break;
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233 | default:
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234 | letter = is_lower(ascii);
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235 | capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
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236 | shift = keyflags & PRESSED_SHIFT;
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237 | if (letter && capslock)
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238 | shift = !shift;
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239 | if (shift)
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240 | map = sc_secondary_map;
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241 | active_read_buff_write(map[sc]);
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242 | break;
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243 | }
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244 | /*spinlock_unlock(&keylock);*/
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245 |
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246 | }
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247 |
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248 | /** @}
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249 | */
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