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os-k/kaleid/kernel/io/keyb.c

120 lines
3.8 KiB
C

//----------------------------------------------------------------------------//
// GNU GPL OS/K //
// //
// Desc: Basic Read Only Keyboard Driver //
// //
// //
// Copyright © 2018-2019 The OS/K Team //
// //
// This file is part of OS/K. //
// //
// OS/K 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 //
// any later version. //
// //
// OS/K 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 OS/K. If not, see <https://www.gnu.org/licenses/>. //
//----------------------------------------------------------------------------//
#include <kernel/base.h>
#include <kernel/iomisc.h>
#include <extras/buf.h>
extern void KeybIsr(void);
extern void IdtRegisterIrq(void (*isr)(void), uchar irq, uchar flags);
extern void SendEOItoPIC(void);
char ScanCodes[100] = { 0 };
void IoSetupKeyb(void)
{
IdtRegisterIrq(KeybIsr, 0x21, 0x8E);
}
void KeybPrint(char code)
{
if (code) {
bprintf(BStdOut, "%c", ScanCodes[(int)code]);
BFlushBuf(BStdOut);
}
}
void ScanCodesInit(void)
{
ScanCodes[0x02] = '1';
ScanCodes[0x03] = '2';
ScanCodes[0x04] = '3';
ScanCodes[0x05] = '4';
ScanCodes[0x06] = '5';
ScanCodes[0x07] = '6';
ScanCodes[0x08] = '7';
ScanCodes[0x09] = '8';
ScanCodes[0x0A] = '9';
ScanCodes[0x0B] = '0';
ScanCodes[0x10] = 'a';
ScanCodes[0x11] = 'z';
ScanCodes[0x12] = 'e';
ScanCodes[0x13] = 'r';
ScanCodes[0x14] = 't';
ScanCodes[0x15] = 'y';
ScanCodes[0x16] = 'u';
ScanCodes[0x17] = 'i';
ScanCodes[0x18] = 'o';
ScanCodes[0x19] = 'p';
ScanCodes[0x1E] = 'q';
ScanCodes[0x1F] = 's';
ScanCodes[0x20] = 'd';
ScanCodes[0x21] = 'f';
ScanCodes[0x22] = 'g';
ScanCodes[0x23] = 'h';
ScanCodes[0x24] = 'j';
ScanCodes[0x25] = 'k';
ScanCodes[0x26] = 'l';
ScanCodes[0x2C] = 'w';
ScanCodes[0x2D] = 'x';
ScanCodes[0x2E] = 'c';
ScanCodes[0x2F] = 'v';
ScanCodes[0x30] = 'b';
ScanCodes[0x31] = 'n';
ScanCodes[0x32] = 'm';
ScanCodes[0x1C] = '\n';
ScanCodes[0x39] = ' ';
}
void IoEnableKeyb(void)
{
ulong flags = KePauseIRQs();
char readedInterruptConfig = IoReadByteFromPort(0x21);
IoWriteByteOnPort(0x21, 0xFD & readedInterruptConfig);
KeRestoreIRQs(flags);
ScanCodesInit();
}
void KeybHandler(void)
{
char status;
char code = 0;
// write EOI
IoWriteByteOnPort(0x20, 0x20);
status = IoReadByteFromPort(0x64);
if (status & 0x01) {
code = IoReadByteFromPort(0x60);
if(code < 0) code = 0;
}
KeybPrint((int)code);
}