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sortix--sortix/sortix/keyboard.cpp
Jonas 'Sortie' Termansen 4bc2841ef0 Restored the partial support for x64.
2011-09-08 21:09:14 +02:00

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/******************************************************************************
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
This file is part of Sortix.
Sortix 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 3 of the License, or (at your option) any later
version.
Sortix 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 Sortix. If not, see <http://www.gnu.org/licenses/>.
keyboard.cpp
A driver for the PS2 Keyboard.
******************************************************************************/
#include "platform.h"
#include <libmaxsi/memory.h>
#include <libmaxsi/keyboard.h>
#include "log.h"
#include "panic.h"
#include "keyboard.h"
#include "interrupt.h"
#include "process.h"
#include "scheduler.h"
using namespace Maxsi::Keyboard;
namespace Sortix
{
namespace Keyboard
{
namespace Layouts
{
namespace US
{
uint32_t sg[128] =
{
UNKNOWN,
ESC,
'1',
'2',
'3',
'4',
'5',
'6',
'7',
'8',
'9',
'0',
'-',
'=',
'\b',
'\t',
'q',
'w',
'e',
'r',
't',
'y',
'u',
'i',
'o',
'p',
'[',
']',
'\n',
CTRL,
'a',
's',
'd',
'f',
'g',
'h',
'j',
'k',
'l',
';',
'\'',
'`',
LSHFT,
'\\',
'z',
'x',
'c',
'v',
'b',
'n',
'm',
',',
'.',
'/',
RSHFT,
'*',
ALT,
' ',
CAPS,
F1,
F2,
F3,
F4,
F5,
F6,
F7,
F8,
F9,
F10,
NUMLCK,
SCRLCK,
HOME,
UP,
PGUP,
'-',
LEFT,
UNKNOWN,
RIGHT,
'+',
END,
DOWN,
PGDOWN,
INS,
DEL,
UNKNOWN,
UNKNOWN,
UNKNOWN,
F11,
F12,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
};
uint32_t Sg[128] =
{
UNKNOWN,
ESC,
'!',
'@',
'#',
'$',
'%',
'^',
'&',
'*',
'(',
')',
'_',
'+',
'\b',
'\t', // TODO: Make it de-tab!
'Q',
'W',
'E',
'R',
'T',
'Y',
'U',
'I',
'O',
'P',
'{',
'}',
'\n',
CTRL,
'A',
'S',
'D',
'F',
'G',
'H',
'J',
'K',
'L',
':',
'"',
'~',
LSHFT,
'|',
'Z',
'X',
'C',
'V',
'B',
'N',
'M',
'<',
'>',
'?',
RSHFT,
'*',
ALT,
' ',
CAPS,
F1,
F2,
F3,
F4,
F5,
F6,
F7,
F8,
F9,
F10,
NUMLCK,
SCRLCK,
HOME,
UP,
PGUP,
'-',
LEFT,
UNKNOWN,
RIGHT,
'+',
END,
DOWN,
PGDOWN,
INS,
DEL,
UNKNOWN,
UNKNOWN,
UNKNOWN,
F11,
F12,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
};
uint32_t sG[128] =
{
UNKNOWN,
ESC,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
'\b',
'\t',
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
'\n',
CTRL,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
LSHFT,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
RSHFT,
UNKNOWN,
ALT,
' ',
CAPS,
F1,
F2,
F3,
F4,
F5,
F6,
F7,
F8,
F9,
F10,
NUMLCK,
SCRLCK,
HOME,
UP,
PGUP,
'-',
LEFT,
UNKNOWN,
RIGHT,
'+',
END,
DOWN,
PGDOWN,
INS,
DEL,
UNKNOWN,
UNKNOWN,
UNKNOWN,
F11,
F12,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
};
uint32_t SG[128] =
{
UNKNOWN,
ESC,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
'\b',
'\t',
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
'\n',
CTRL,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
LSHFT,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
RSHFT,
UNKNOWN,
ALT,
' ',
CAPS,
F1,
F2,
F3,
F4,
F5,
F6,
F7,
F8,
F9,
F10,
NUMLCK,
SCRLCK,
HOME,
UP,
PGUP,
'-',
LEFT,
UNKNOWN,
RIGHT,
'+',
END,
DOWN,
PGDOWN,
INS,
DEL,
UNKNOWN,
UNKNOWN,
UNKNOWN,
F11,
F12,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
UNKNOWN,
};
uint32_t* Layout[4] = { sg, Sg, sG, SG };
}
uint32_t** Layout = US::Layout;
nat Mask = 0;
nat LockMask = 0;
bool control;
const nat Shift = (1<<0);
const nat AltGr = (1<<1);
const nat ScrLck = (1<<2);
const nat LEDScrLck = (1<<0);
const nat LEDNumLck = (1<<1);
const nat LEDCapsLck = (1<<2);
uint32_t GetCodePoint(uint8_t Scancode)
{
nat TableIndex = 0x3 & (Mask ^ LockMask);
//Log::PrintF("[m=%x,lm=%x,ti=%x]", Mask, LockMask, TableIndex);
uint32_t CodePoint = Layout[TableIndex][Scancode & 0x7F];
if ( CodePoint == UNKNOWN ) { return UNKNOWN; }
if ( Scancode & 0x80 )
{
if ( CodePoint == LSHFT ) { Mask &= ~Shift; }
if ( CodePoint == ALTGR ) { Mask &= ~AltGr; }
if ( CodePoint == SCRLCK ) { Mask &= ~ScrLck; }
if ( CodePoint == CTRL ) { control = false; }
}
else
{
if ( CodePoint == LSHFT ) { Mask |= Shift; }
if ( CodePoint == ALTGR ) { Mask |= AltGr; }
if ( CodePoint == SCRLCK ) { Mask |= ScrLck; }
if ( CodePoint == CAPS ) { LockMask ^= Shift; SetLEDs(LEDCapsLck); }
if ( CodePoint == CTRL ) { control = true; }
}
if ( control && ( CodePoint == 'c' || CodePoint == 'C' ) )
{
CodePoint = SIGINT;
}
return CodePoint;
}
}
uint8_t LEDs;
size_t keystrokeQueueOffset;
size_t keystrokeQueueUsed;
size_t keystrokeQueueLength;
uint32_t* keystrokeQueue;
void Init()
{
// Initialize variables.
LEDs = 0;
// Register our keystroke callback.
Interrupt::RegisterHandler(Interrupt::IRQ1, OnIRQ1);
// If any scancodes were already pending, our interrupt handler
// will never be called. Let's just discard anything pending.
CPU::InPortB(0x60);
// Create a queue where pending keystrokes can be stored until
// user-space applications access them.
keystrokeQueueUsed = 0;
keystrokeQueueOffset = 0;
keystrokeQueueLength = 1024ULL;
keystrokeQueue = new uint32_t[keystrokeQueueLength];
if ( keystrokeQueue == NULL )
{
Panic("Could not allocate keystroke buffer");
}
}
bool QueueKeystroke(uint32_t keystroke)
{
if ( keystrokeQueueLength <= keystrokeQueueUsed ) { return false; }
size_t position = keystrokeQueueOffset + keystrokeQueueUsed;
position %= keystrokeQueueLength;
keystrokeQueueUsed++;
keystrokeQueue[position] = keystroke;
return true;
}
void OnIRQ1(CPU::InterruptRegisters* Regs)
{
// Read the scancode from the data register.
uint8_t Scancode = CPU::InPortB(0x60);
//Log::PrintF("[%u]", Scancode);
uint32_t CodePoint = Layouts::GetCodePoint(Scancode);
if ( CodePoint == SIGINT )
{
SigInt();
return;
}
bool KeyUp = (Scancode & 0x80);
if ( KeyUp ) { CodePoint |= DEPRESSED; }
QueueKeystroke(CodePoint);
return;
//if ( Reader != NULL ) { Reader->OnKeystroke(CodePoint, KeyUp); return; }
// Use this to debug the exact scancodes you receive!
//Log::PrintF("[%u/U+%x]", Scancode, CodePoint);
if ( CodePoint == UNKNOWN ) { Log::PrintF("^%u", Scancode);return; }
if ( CodePoint & (1<<31) ) { return; }
// The high bit of the scancode is set if the key is released.
if ( Scancode & 0x80 ) { return; }
if ( CodePoint & 0xFFFFFF80 ) { Log::PrintF("U+%x", CodePoint); return; }
Log::PrintF("%s", &CodePoint); // Little endian hack!
}
void SetLEDs(uint8_t Toggle)
{
LEDs ^= Toggle;
while ( (CPU::InPortB(0x64) & (1<<1)) != 0 ) { } //loop Until zero
CPU::OutPortB(0x60, 0xED);
while ( (CPU::InPortB(0x64) & (1<<1)) != 0 ) { } //loop Until zero
CPU::OutPortB(0x60, LEDs);
}
void SysReceieveKeystroke(CPU::InterruptRegisters* R)
{
#ifdef PLATFORM_X86
uint32_t codepoint;
if ( keystrokeQueueUsed == 0 )
{
codepoint = 0;
}
else
{
codepoint = keystrokeQueue[keystrokeQueueOffset];
keystrokeQueueOffset++;
keystrokeQueueOffset %= keystrokeQueueLength;
keystrokeQueueUsed--;
}
R->eax = codepoint;
#endif
}
}
}
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