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Kernel: Keyboard is now handeled "properly"

This commit is contained in:
Bananymous 2022-12-07 04:35:38 +02:00
parent 998184e288
commit b7a600c86d
1 changed files with 339 additions and 1 deletions
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340
kernel/kernel/PS2.cpp
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@ -1,21 +1,359 @@
#include <kernel/IDT.h> #include <kernel/IDT.h>
#include <kernel/IO.h>
#include <kernel/PIC.h> #include <kernel/PIC.h>
#include <kernel/PS2.h> #include <kernel/PS2.h>
#include <kernel/kprint.h> #include <kernel/kprint.h>
#include <string.h>
#define PS2_DATA_PORT 0x60
#define PS2_STATUS_REGISTER 0x64
#define PS2_COMMAND_REGISTER 0x64
#define PS2_ACK 0xfa
#define PS2_IRQ 0x01 #define PS2_IRQ 0x01
#define ALT 0
#define CTRL 1
#define SHIFT 2
#define KEYBOARD_FI
namespace PS2 namespace PS2
{ {
static bool s_keyboard_state[0x7f];
static uint8_t s_modifiers = 0;
#ifdef KEYBOARD_FI
enum class Key
{
Key_INVALID,
Key_ESC,
Key_1,
Key_2,
Key_3,
Key_4,
Key_5,
Key_6,
Key_7,
Key_8,
Key_9,
Key_0,
Key_Plus,
Key_Tick,
Key_Backspace,
Key_Tab,
Key_Q,
Key_W,
Key_E,
Key_R,
Key_T,
Key_Y,
Key_U,
Key_I,
Key_O,
Key_P,
Key_Å,
Key_Caret,
Key_Enter,
Key_Control,
Key_A,
Key_S,
Key_D,
Key_F,
Key_G,
Key_H,
Key_J,
Key_K,
Key_L,
Key_Ö,
Key_Ä,
Key_Section, // §
Key_LeftShift,
Key_SingleQuote,
Key_Z,
Key_X,
Key_C,
Key_V,
Key_B,
Key_N,
Key_M,
Key_Comma,
Key_Period,
Key_Hyphen,
Key_RightShift,
Key_Unknown, // Maybe other alt
Key_Alt,
Key_Space,
Key_CapsLock,
Key_F1,
Key_F2,
Key_F3,
Key_F4,
Key_F5,
Key_F6,
Key_F7,
Key_F8,
Key_F9,
Key_F10,
// TODO
};
#endif
char fi_keymap[0x7f]
{
'\0',
'\0', // esc
'1',
'2',
'3',
'4',
'5',
'6',
'7',
'8',
'9',
'0',
'+',
'`',
'\b',
'\t', // tab
'q',
'w',
'e',
'r',
't',
'y',
'u',
'i',
'o',
'p',
'?',
'^',
'\n', // enter
'\0',
'a',
's',
'd',
'f',
'g',
'h',
'j',
'k',
'l',
'\0', // ö
'\0', // ä
'\0', // §
'\0',
'\'',
'z',
'x',
'c',
'v',
'b',
'n',
'm',
',',
'.',
'-',
'\0',
'\0',
'\0',
' ',
};
char fi_keymap_shift[0x7f]
{
'\0',
'\0', // esc
'!',
'"',
'#',
'\0', // ¤
'%',
'&',
'/',
'(',
')',
'=',
'?',
'`',
'\b',
'\t', // tab
'Q',
'W',
'E',
'R',
'T',
'Y',
'U',
'I',
'O',
'P',
'?',
'^',
'\n', // enter
'\0',
'A',
'S',
'D',
'F',
'G',
'H',
'J',
'K',
'L',
'\0', // ö
'\0', // ä
'\0', // ½
'\0',
'*',
'Z',
'X',
'C',
'V',
'B',
'N',
'M',
';',
':',
'_',
'\0',
'\0',
'\0',
' ',
};
void irq_handler() void irq_handler()
{ {
kprint("keyboard\n"); while (IO::inb(PS2_STATUS_REGISTER) & 0x01)
{
uint8_t raw = IO::inb(PS2_DATA_PORT);
uint8_t ch = raw & 0x7f;
bool pressed = !(raw & 0x80);
switch (ch)
{
case 0x38: pressed ? (s_modifiers |= 1 << ALT ) : (s_modifiers &= ~(1 << ALT )); break;
case 0x1d: pressed ? (s_modifiers |= 1 << CTRL ) : (s_modifiers &= ~(1 << CTRL )); break;
case 0x2a: pressed ? (s_modifiers |= 1 << SHIFT) : (s_modifiers &= ~(1 << SHIFT)); break;
default:
s_keyboard_state[ch] = pressed;
}
if (pressed)
{
char c = s_modifiers & (1 << SHIFT) ? fi_keymap_shift[ch] : fi_keymap[ch];
if (c) kprint("{}", c);
}
IO::io_wait();
}
} }
void initialize() void initialize()
{ {
// Clear keyboard buffer
while (IO::inb(PS2_STATUS_REGISTER) & 0x01)
IO::inb(PS2_DATA_PORT);
memset(s_keyboard_state, 0, sizeof(s_keyboard_state));
IDT::register_irq_handler(PS2_IRQ, irq_handler); IDT::register_irq_handler(PS2_IRQ, irq_handler);
PIC::unmask(PS2_IRQ); PIC::unmask(PS2_IRQ);
} }