| 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 <macros.h>
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| 48 |
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| 49 | #define PRESSED_SHIFT (1<<0)
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| 50 | #define PRESSED_CAPSLOCK (1<<1)
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| 51 | #define LOCKED_CAPSLOCK (1<<0)
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| 52 |
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| 53 | #define ACTIVE_READ_BUFF_SIZE 16 /* Must be power of 2 */
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| 54 |
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| 55 | chardev_t kbrd;
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| 56 |
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| 57 | static uint8_t active_read_buff[ACTIVE_READ_BUFF_SIZE];
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| 58 |
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| 59 | SPINLOCK_INITIALIZE(keylock); /**< keylock protects keyflags and lockflags. */
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| 60 | static volatile int keyflags; /**< Tracking of multiple keypresses. */
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| 61 | static volatile int lockflags; /**< Tracking of multiple keys lockings. */
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| 62 |
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| 63 | /** Process release of key.
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| 64 | *
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| 65 | * @param sc Scancode of the key being released.
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| 66 | */
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| 67 | void key_released(uint8_t sc)
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| 68 | {
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| 69 | spinlock_lock(&keylock);
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| 70 | switch (sc) {
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| 71 | case SC_LSHIFT:
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| 72 | case SC_RSHIFT:
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| 73 | keyflags &= ~PRESSED_SHIFT;
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| 74 | break;
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| 75 | case SC_CAPSLOCK:
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| 76 | keyflags &= ~PRESSED_CAPSLOCK;
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| 77 | if (lockflags & LOCKED_CAPSLOCK)
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| 78 | lockflags &= ~LOCKED_CAPSLOCK;
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| 79 | else
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| 80 | lockflags |= LOCKED_CAPSLOCK;
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| 81 | break;
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| 82 | default:
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| 83 | break;
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| 84 | }
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| 85 | spinlock_unlock(&keylock);
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| 86 | }
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| 87 |
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| 88 | /** Process keypress.
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| 89 | *
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| 90 | * @param sc Scancode of the key being pressed.
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| 91 | */
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| 92 | void key_pressed(uint8_t sc)
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| 93 | {
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| 94 | char *map = sc_primary_map;
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| 95 | char ascii = sc_primary_map[sc];
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| 96 | bool shift, capslock;
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| 97 | bool letter = false;
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| 98 |
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| 99 | spinlock_lock(&keylock);
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| 100 | switch (sc) {
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| 101 | case SC_LSHIFT:
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| 102 | case SC_RSHIFT:
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| 103 | keyflags |= PRESSED_SHIFT;
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| 104 | break;
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| 105 | case SC_CAPSLOCK:
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| 106 | keyflags |= PRESSED_CAPSLOCK;
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| 107 | break;
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| 108 | case SC_SPEC_ESCAPE:
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| 109 | break;
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| 110 | case SC_LEFTARR:
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| 111 | chardev_push_character(&kbrd, 0x1b);
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| 112 | chardev_push_character(&kbrd, 0x5b);
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| 113 | chardev_push_character(&kbrd, 0x44);
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| 114 | break;
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| 115 | case SC_RIGHTARR:
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| 116 | chardev_push_character(&kbrd, 0x1b);
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| 117 | chardev_push_character(&kbrd, 0x5b);
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| 118 | chardev_push_character(&kbrd, 0x43);
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| 119 | break;
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| 120 | case SC_UPARR:
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| 121 | chardev_push_character(&kbrd, 0x1b);
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| 122 | chardev_push_character(&kbrd, 0x5b);
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| 123 | chardev_push_character(&kbrd, 0x41);
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| 124 | break;
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| 125 | case SC_DOWNARR:
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| 126 | chardev_push_character(&kbrd, 0x1b);
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| 127 | chardev_push_character(&kbrd, 0x5b);
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| 128 | chardev_push_character(&kbrd, 0x42);
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| 129 | break;
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| 130 | case SC_HOME:
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| 131 | chardev_push_character(&kbrd, 0x1b);
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| 132 | chardev_push_character(&kbrd, 0x4f);
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| 133 | chardev_push_character(&kbrd, 0x48);
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| 134 | break;
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| 135 | case SC_END:
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| 136 | chardev_push_character(&kbrd, 0x1b);
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| 137 | chardev_push_character(&kbrd, 0x4f);
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| 138 | chardev_push_character(&kbrd, 0x46);
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| 139 | break;
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| 140 | case SC_DELETE:
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| 141 | chardev_push_character(&kbrd, 0x1b);
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| 142 | chardev_push_character(&kbrd, 0x5b);
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| 143 | chardev_push_character(&kbrd, 0x33);
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| 144 | chardev_push_character(&kbrd, 0x7e);
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| 145 | break;
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| 146 | default:
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| 147 | letter = is_lower(ascii);
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| 148 | capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
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| 149 | shift = keyflags & PRESSED_SHIFT;
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| 150 | if (letter && capslock)
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| 151 | shift = !shift;
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| 152 | if (shift)
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| 153 | map = sc_secondary_map;
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| 154 | chardev_push_character(&kbrd, map[sc]);
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| 155 | break;
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| 156 | }
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| 157 | spinlock_unlock(&keylock);
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| 158 | }
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| 159 |
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| 160 | uint8_t active_read_buff_read(void)
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| 161 | {
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| 162 | static int i=0;
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| 163 | i &= (ACTIVE_READ_BUFF_SIZE-1);
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| 164 | if(!active_read_buff[i]) {
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| 165 | return 0;
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| 166 | }
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| 167 | return active_read_buff[i++];
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| 168 | }
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| 169 |
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| 170 | void active_read_buff_write(uint8_t ch)
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| 171 | {
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| 172 | static int i=0;
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| 173 | active_read_buff[i] = ch;
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| 174 | i++;
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| 175 | i &= (ACTIVE_READ_BUFF_SIZE-1);
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| 176 | active_read_buff[i]=0;
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| 177 | }
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| 178 |
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| 179 |
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| 180 | void active_read_key_pressed(uint8_t sc)
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| 181 | {
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| 182 | char *map = sc_primary_map;
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| 183 | char ascii = sc_primary_map[sc];
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| 184 | bool shift, capslock;
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| 185 | bool letter = false;
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| 186 |
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| 187 | /*spinlock_lock(&keylock);*/
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| 188 | switch (sc) {
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| 189 | case SC_LSHIFT:
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| 190 | case SC_RSHIFT:
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| 191 | keyflags |= PRESSED_SHIFT;
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| 192 | break;
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| 193 | case SC_CAPSLOCK:
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| 194 | keyflags |= PRESSED_CAPSLOCK;
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| 195 | break;
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| 196 | case SC_SPEC_ESCAPE:
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| 197 | break;
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| 198 | case SC_LEFTARR:
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| 199 | active_read_buff_write(0x1b);
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| 200 | active_read_buff_write(0x5b);
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| 201 | active_read_buff_write(0x44);
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| 202 | break;
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| 203 | case SC_RIGHTARR:
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| 204 | active_read_buff_write(0x1b);
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| 205 | active_read_buff_write(0x5b);
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| 206 | active_read_buff_write(0x43);
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| 207 | break;
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| 208 | case SC_UPARR:
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| 209 | active_read_buff_write(0x1b);
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| 210 | active_read_buff_write(0x5b);
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| 211 | active_read_buff_write(0x41);
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| 212 | break;
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| 213 | case SC_DOWNARR:
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| 214 | active_read_buff_write(0x1b);
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| 215 | active_read_buff_write(0x5b);
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| 216 | active_read_buff_write(0x42);
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| 217 | break;
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| 218 | case SC_HOME:
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| 219 | active_read_buff_write(0x1b);
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| 220 | active_read_buff_write(0x4f);
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| 221 | active_read_buff_write(0x48);
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| 222 | break;
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| 223 | case SC_END:
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| 224 | active_read_buff_write(0x1b);
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| 225 | active_read_buff_write(0x4f);
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| 226 | active_read_buff_write(0x46);
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| 227 | break;
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| 228 | case SC_DELETE:
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| 229 | active_read_buff_write(0x1b);
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| 230 | active_read_buff_write(0x5b);
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| 231 | active_read_buff_write(0x33);
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| 232 | active_read_buff_write(0x7e);
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| 233 | break;
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| 234 | default:
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| 235 | letter = is_lower(ascii);
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| 236 | capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
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| 237 | shift = keyflags & PRESSED_SHIFT;
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| 238 | if (letter && capslock)
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| 239 | shift = !shift;
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| 240 | if (shift)
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| 241 | map = sc_secondary_map;
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| 242 | active_read_buff_write(map[sc]);
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| 243 | break;
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| 244 | }
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| 245 | /*spinlock_unlock(&keylock);*/
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| 246 |
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| 247 | }
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| 248 |
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| 249 | /** @}
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| 250 | */
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