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/* festival-the multimedia operating system
* file: kb.cpp
* By: jtlb
* Desc: implement the kernel's keyboard driver
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.*/
#include <kb.h>
keyboard* keyboard::inst=0;
//layouts
const char qwerty[4*93] = {
//Simple
0, 0, 49, 50, 51, 52, 53, 54, 55, 56, 57, 48, 45, 61, '\b', '\t', 113, 119,
101, 114, 116, 121, 117, 105, 111, 112, 91, 93, '\n', 0, 97, 115, 100, 102,
103, 104, 106, 107, 108, 59, 39, 146, 0, 92, 122, 120, 99, 118, 98, 110,
109, 44, 46, 47, 0, 42, 0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 45, 0, 0, 0, 43, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
//Shift
0, 0, 33, 64, 35, 36, 37, 94, 38, 42, 40, 95, 41, 43, '\b', '\t', 81, 87, 69,
82, 84, 89, 85, 73, 79, 80, 123, 125, '\n', 0, 65, 83, 68, 70, 71, 72, 74,
75, 76, 58, 34, 126, 0, 124, 90, 88, 67, 86, 66, 78, 77, 60, 62, 63, 0, 42,
0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 55, 56, 57, 45, 52, 53, 54,
43, 49, 50, 51, 48, 46, 0, 0, 0, 0, 0, 0, 0, 0, 0,
//Alt Gr
0, 0, 49, 50, 51, 52, 53, 54, 55, 56, 57, 48, 45, 61, '\b', '\t', 113, 119,
128, 114, 116, 121, 117, 105, 111, 112, 91, 93, '\n', 0, 97, 115, 100, 102,
103, 104, 106, 107, 108, 59, 39, 146, 0, 92, 122, 120, 99, 118, 98, 110,
109, 44, 46, 47, 0, 42, 0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 55,
56, 57, 45, 52, 53, 54, 43, 49, 50, 51, 48, 46, 0, 0, 0, 0, 0, 0, 0, 0, 0,
//Verr num
0, 0, 49, 50, 51, 52, 53, 54, 55, 56, 57, 48, 45, 61, '\b', '\t', 113, 119,
101, 114, 116, 121, 117, 105, 111, 112, 91, 93, '\n', 0, 97, 115, 100, 102,
103, 104, 106, 107, 108, 59, 39, 146, 0, 92, 122, 120, 99, 118, 98, 110,
109, 44, 46, 47, 0, 42, 0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 55,
56, 57, 45, 52, 53, 54, 43, 49, 50, 51, 48, 46, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
/// AZERTY
const char azerty[4*93] = {
//Simple
0, 0, 38, 233, 34, 39, 40, 45, 232, 95,
231, 224, 41, 61, '\b', '\t', 97, 122, 101, 114,
116, 121, 117, 105, 111, 112, 94, 36, '\n', 0,
113, 115, 100, 102, 103, 104, 106, 107, 108, 109,
249, 253, 0, 42, 119, 120, 99, 118, 98, 110,
44, 59, 58, 33, 0, 0, 0, 32, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 60, 0, 0, 0, 0, 0, 0,
//Shift
0, 0, 49, 50, 51, 52, 53, 54, 55, 56, 57, 48, 41, 43, '\b', '\t',
65, 90, 69, 82, 84, 89, 85, 73, 79, 80, 168, 163, '\n', 0, 81, 83,
68, 70, 71, 72, 74, 75, 76, 77, 37, 253, 0, 181, 87, 88, 67, 86,
66, 78, 63, 46, 47, 36, 0, 42, 0, 32, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 55, 56, 57, 45, 52, 53, 54, 43, 49,
50, 51, 48, 46, 0, 0, 62, 0, 0, 0, 0, 0, 0,
//Alt Gr
0, 0, 0, 126, 35, 123, 91, 124, 96, 92, 136, 64, 93, 125, '\b', '\t', 97,
122, 128, 114, 116, 121, 117, 105, 111, 112, 94, 164, '\n', 0, 113, 115,
100, 102, 103, 104, 106, 107, 108, 109, 249, 253, 0, 60, 119, 120, 99, 118,
98, 110, 44, 59, 58, 33, 0, 42, 0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 45, 0, 0, 0, 43, 0, 0, 0, 0, 46, 0, 0, 0, 0, 0, 0, 0, 0, 0,
//Verr num
0, 0, 38, 233, 34, 39, 40, 45, 232, 95, 231, 224, 41, 61, '\b', '\t',
97, 122, 101, 114, 116, 121, 117, 105, 111, 112, 94, 36, '\n', 0, 113, 115,
100, 102, 103, 104, 106, 107, 108, 109, 249, 253, 0, 42, 119, 120, 99, 118,
98, 110, 44, 59, 58, 33, 0, 42, 0, 32, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 55, 56, 57, 45, 52, 53, 54, 43, 49,
50, 51, 48, 46, 0, 0, 60, 0, 0, 0, 0, 0, 0
};
/* Handles the keyboard interrupt */
void keyboard::handler(struct regs *r)
{
uint8_t scancode;
bool released = false;
uint16_t msg;
scancode = ::inportb(0x60);
if(scancode == 0x1)
debugging = false;
if (scancode & 0x80)//key released
released = true;
if (scancode == 0xe0)
{
extended = true;
return;
}
scancode &= 0x7f;
if(debugging && !released)
{
printf(" => Key pressed: scancode = |%#x|; ", scancode);
if(extended)
printf("extended = true\n");
else
printf("extended = false\n");
return;
}
switch(scancode)
{
case 0x1:
{
msg = KB_EVT_ESCAPE;
break;
}
case 0x4b://<-
{
msg = KB_EVT_ARROW_RIGHT;
break;
}
case 0x4d://->
{
msg = KB_EVT_ARROW_RIGHT;
break;
}
case 0x50://
{
msg = KB_EVT_ARROW_DOWN;
break;
}
case 0x48://
{
msg = KB_EVT_ARROW_UP;
break;
}
case 0x1c://
{
msg = KB_EVT_ENTER;
if(!released)
add_char_to_ring('\n');//fixme
break;
}
case 0xe://
{
msg = KB_EVT_BACKSPACE;
if(!released)
add_char_to_ring('\b');
break;
}
case 0x52://
{
msg = KB_EVT_INSER;
break;
}
case 0x47://
{
msg = KB_EVT_HOME;
break;
}
case 0x49://
{
msg = KB_EVT_PAGE_UP;
break;
}
case 0x51://
{
msg = KB_EVT_PAGE_DOWN;
break;
}
case 0x4f://
{
msg = KB_EVT_END;
break;
}
case 0x53://
{
msg = KB_EVT_SUPPR;
break;
}
case 0xf://
{
msg = KB_EVT_TAB;
if(!released)
add_char_to_ring('\t');
break;
}
case 0x37://
{
msg = KB_EVT_PRINT_SCREEN;
break;
}
case 0x1d://ctrl
{
msg = KB_EVT_CTRL;
ctrl = !released;
break;
}
case 0x2a://left shift
{
msg = KB_EVT_SHIFT;
shift = !released;
break;
}
case 0x36://right shift
{
msg = KB_EVT_SHIFT;
msg |= KB_EVT_RIGHT;
shift = !released;
break;
}
case 0x38://alt ou altgr
{
msg = KB_EVT_ALT;
if (extended)
{
altgr = !released;
}
else
{
msg |= KB_EVT_RIGHT;
alt = !released;
}
break;
}
case 0x45://verrnum
{
if(extended)//TODO: handle the pause key
{
//msg = KB_EVT_NUM_PAUSE;
}
else
{
msg = KB_EVT_NUM_LOCK;
ver_num = !ver_num;
update_leds();
}
break;
}
case 0x3a://caps lock
{
msg = KB_EVT_CAPS_LOCK;
caps_lock = !caps_lock;
update_leds();
break;
}
case 0x46://scroll lock
{
msg = KB_EVT_SCROLL_LOCK;
scroll_lock = !scroll_lock;
update_leds();
break;
}
case 0x3b:
{
msg = KB_EVT_F1;
break;
}
case 0x3c:
{
msg = KB_EVT_F2;
break;
}
case 0x3d:
{
msg = KB_EVT_F3;
break;
}
case 0x3e:
{
msg = KB_EVT_F4;
break;
}
case 0x3f:
{
msg = KB_EVT_F5;
break;
}
case 0x40:
{
msg = KB_EVT_F6;
break;
}
case 0x41:
{
msg = KB_EVT_F7;
break;
}
case 0x42:
{
msg = KB_EVT_F8;
break;
}
case 0x43:
{
msg = KB_EVT_F9;
break;
}
case 0x44:
{
msg = KB_EVT_F10;
break;
}
case 0x57:
{
msg = KB_EVT_F11;
break;
}
case 0x58:
{
msg = KB_EVT_F12;
break;
}
default://fixme: handle num pad corectly
{
msg = scan_code_to_ascii(scancode,extended);
msg |= KB_EVT_KEY_ASCII;
if(!released)
add_char_to_ring(msg);//fixme: to be removed
}
}
// if (scancode == 110)//escape key
// {
// return;
// }
//let us build the message
if(!released)
msg |= KB_EVT_KEY_PRESSED;
if(ver_num)
msg |= KB_EVT_NUM_LOCK_ON;
if(caps_lock)
msg |= KB_EVT_CAPS_LOCK_ON;
if(scroll_lock)
msg |= KB_EVT_SCROLL_LOCK_ON;
gabriel::getinstance()->send_message(message(addr,msg),address(1,1));
if(scancode == 0x53)//suppr
{
if(ctrl && (alt || altgr))
reboot();
}
}
char keyboard::scan_code_to_ascii(uint8_t scan, bool ext)
{
scan &= 0x7f;//clear last bit
if(ext)
return 0;//key with extended sancodes are NEVER a caracter!!
if (altgr)
return layout[2*93 + scan];
if (shift && !caps_lock || !shift && caps_lock)
return layout[1*93 + scan];
if (ver_num)
return layout[3*93 + scan];
return layout[3*93 + scan];
}
void keyboard::update_leds()
{
uint8_t tmp = 0;
if(scroll_lock)
tmp |= 1;
if(ver_num)
tmp |= 2;
if(caps_lock)
tmp |= 4;
while ((inportb(0x64) & 2) != 0){}//wait for the controller to be ready
outportb(0x60,0xed);//send command "update leds" to command/data port
while ((inportb(0x64) & 2) != 0){}//wait for the controller to be ready
outportb(0x60,tmp);//send the new state
}
bool keyboard::add_char_to_ring(char c)
{
if(!c)
return false;
if(debugging)
{
printf("%c", c);
return true;//do not add it to the ring
}
if ((last+1 == first) || (last == 1023 && first == 0))
{
printf("ring overflow!!!\n");
return false;
}
if (c == 0)
{
return false;
}
else
{
ring[last] = c;
if (last == 1023)
last = 0;
else
last++;
return true;
}
}
char keyboard::getchar()
{
while(first == last)
{
irq_inst->wait(1);//attend l'interruption clavier
}
char tmp = ring[first];
if(tmp != '\b')
printf("%c", tmp);
if (first == 1023)
first = 0;
else
first++;
return tmp;
}
void keyboard::getline(char* dest, size_t len, char escape)
{
uint32_t i = 0;
for(; i < len;)
{
dest[i] = getchar();
if(dest[i] == escape)
{
if(dest[i-1] == '\\')//si == \, mais en cpp il en faut deux
{//on ne prend pas en compte l'info(ni le \)
i--;
continue;
}
else
{
dest[i] = 0;//conclue la ligne
return;
}
}
if(dest[i] == '\b')//si retours arrière
{
if(i>0)
{
if(dest[i-1] == '\t')//si on avais une tabulation
printf("\b\b\b");//on efface
printf("\b");//on efface
i--;
}
continue;
}
i++;
}
dest[i] = 0;
return;
}
/* Installs the keyboard handler into IRQ1 */
keyboard::keyboard()
{
gab_inst = gabriel::getinstance();
addr = gab_inst->register_device(DEVICE_FAMILY_KEYBOARD);
irq_inst = irq::getinstance();
irq_inst->register_handler(1, this);
layout=(const char*)qwerty;
ctrl = false;
shift = false;
alt = false;
altgr = false;
ver_num = false;
caps_lock = false;
scroll_lock = false;
extended = false;
debugging = false;
first = 0;
last = 0;
update_leds();
inst = this;
}
void keyboard::debug_mode()
{
debugging = true;
while(debugging)
{
sleep(10);
}
}
void keyboard::chooselayout(int32_t num)
{
switch( num)
{
case 1:
layout=(const char*)azerty;
break;
case 2:
layout=(const char*)qwerty;
break;
}
}
void pause()
{
irq* irq_inst = irq::getinstance();
irq_inst->reset_fired_flag(1);
printf("\nPress any key to continue...\n");
if(!irq_inst)
return;
irq_inst->wait(1);//attend l'interruption clavier
keyboard::getinstance()->getchar();//retire le dernier caractère....
}
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