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#include <AK/Types.h>
#include "i386.h"
#include "IO.h"
#include "PIC.h"
#include <Kernel/Devices/KeyboardDevice.h>
#include <Kernel/TTY/VirtualConsole.h>
#include <AK/Assertions.h>
//#define KEYBOARD_DEBUG
#define IRQ_KEYBOARD 1
#define I8042_BUFFER 0x60
#define I8042_STATUS 0x64
#define I8042_ACK 0xFA
#define I8042_BUFFER_FULL 0x01
#define I8042_WHICH_BUFFER 0x20
#define I8042_MOUSE_BUFFER 0x20
#define I8042_KEYBOARD_BUFFER 0x00
static char map[0x80] =
{
0, '\033', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', 0x08, '\t',
'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n', 0,
'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', '`', 0, '\\',
'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
0, 0, 0, ' '
};
static char shift_map[0x80] =
{
0, '\033', '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+', 0x08, '\t',
'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n', 0,
'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"', '~', 0, '|',
'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
0, 0, 0, ' '
};
static KeyCode unshifted_key_map[0x80] =
{
Key_Invalid, Key_Escape,
Key_1, Key_2, Key_3, Key_4, Key_5, Key_6, Key_7, Key_8, Key_9, Key_0, Key_Minus, Key_Equal, Key_Backspace,
Key_Tab, //15
Key_Q, Key_W, Key_E, Key_R, Key_T, Key_Y, Key_U, Key_I, Key_O, Key_P, Key_LeftBracket, Key_RightBracket,
Key_Return, // 28
Key_Control, // 29
Key_A, Key_S, Key_D, Key_F, Key_G, Key_H, Key_J, Key_K, Key_L, Key_Semicolon, Key_Apostrophe, Key_Backtick,
Key_LeftShift, // 42
Key_Backslash,
Key_Z, Key_X, Key_C, Key_V, Key_B, Key_N, Key_M, Key_Comma, Key_Period, Key_Slash,
Key_RightShift, // 54
Key_Invalid,
Key_Alt, // 56
Key_Space, // 57
Key_Invalid, // 58
Key_F1, Key_F2, Key_F3, Key_F4, Key_F5, Key_F6, Key_F7, Key_F8, Key_F9, Key_F10,
Key_Invalid,
Key_Invalid, // 70
Key_Home,
Key_Up,
Key_PageUp,
Key_Invalid,
Key_Left,
Key_Invalid,
Key_Right, // 77
Key_Invalid,
Key_End,
Key_Down, // 80
Key_PageDown,
Key_Invalid,
Key_Delete, // 83
Key_Invalid,
Key_Invalid,
Key_Invalid,
Key_F11,
Key_F12,
Key_Invalid,
Key_Invalid,
Key_Logo,
};
static KeyCode shifted_key_map[0x100] =
{
Key_Invalid, Key_Escape,
Key_ExclamationPoint, Key_AtSign, Key_Hashtag, Key_Dollar, Key_Percent, Key_Circumflex, Key_Ampersand, Key_Asterisk, Key_LeftParen, Key_RightParen, Key_Underscore, Key_Plus, 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_LeftBrace, Key_RightBrace,
Key_Return,
Key_Control,
Key_A, Key_S, Key_D, Key_F, Key_G, Key_H, Key_J, Key_K, Key_L, Key_Colon, Key_DoubleQuote, Key_Tilde,
Key_LeftShift, // 42
Key_Pipe,
Key_Z, Key_X, Key_C, Key_V, Key_B, Key_N, Key_M, Key_LessThan, Key_GreaterThan, Key_QuestionMark,
Key_RightShift, // 54
Key_Invalid,
Key_Alt,
Key_Space, // 57
Key_Invalid, // 58
Key_F1, Key_F2, Key_F3, Key_F4, Key_F5, Key_F6, Key_F7, Key_F8, Key_F9, Key_F10,
Key_Invalid,
Key_Invalid, // 70
Key_Home,
Key_Up,
Key_PageUp,
Key_Invalid,
Key_Left,
Key_Invalid,
Key_Right, // 77
Key_Invalid,
Key_End,
Key_Down, // 80
Key_PageDown,
Key_Invalid,
Key_Delete, // 83
Key_Invalid,
Key_Invalid,
Key_Invalid,
Key_F11,
Key_F12,
Key_Invalid,
Key_Invalid,
Key_Logo,
};
void KeyboardDevice::key_state_changed(byte raw, bool pressed)
{
Event event;
event.key = (m_modifiers & Mod_Shift) ? shifted_key_map[raw] : unshifted_key_map[raw];
event.character = (m_modifiers & Mod_Shift) ? shift_map[raw] : map[raw];
event.flags = m_modifiers;
if (pressed)
event.flags |= Is_Press;
if (m_client)
m_client->on_key_pressed(event);
m_queue.enqueue(event);
}
void KeyboardDevice::handle_irq()
{
for (;;) {
byte status = IO::in8(I8042_STATUS);
if (!(((status & I8042_WHICH_BUFFER) == I8042_KEYBOARD_BUFFER) && (status & I8042_BUFFER_FULL)))
return;
byte raw = IO::in8(I8042_BUFFER);
byte ch = raw & 0x7f;
bool pressed = !(raw & 0x80);
#ifdef KEYBOARD_DEBUG
dbgprintf("Keyboard::handle_irq: %b %s\n", ch, pressed ? "down" : "up");
#endif
switch (ch) {
case 0x38:
update_modifier(Mod_Alt, pressed);
break;
case 0x1d:
update_modifier(Mod_Ctrl, pressed);
break;
case 0x5b:
update_modifier(Mod_Logo, pressed);
break;
case 0x2a:
case 0x36:
update_modifier(Mod_Shift, pressed);
break;
}
switch (ch) {
case I8042_ACK: break;
default:
if (m_modifiers & Mod_Alt) {
switch (map[ch]) {
case '1':
case '2':
case '3':
case '4':
VirtualConsole::switch_to(map[ch] - '0' - 1);
break;
default:
break;
}
}
key_state_changed(ch, pressed);
}
}
}
static KeyboardDevice* s_the;
KeyboardDevice& KeyboardDevice::the()
{
ASSERT(s_the);
return *s_the;
}
KeyboardDevice::KeyboardDevice()
: IRQHandler(IRQ_KEYBOARD)
, CharacterDevice(85, 1)
{
s_the = this;
// Empty the buffer of any pending data.
// I don't care what you've been pressing until now!
while (IO::in8(I8042_STATUS) & I8042_BUFFER_FULL)
IO::in8(I8042_BUFFER);
enable_irq();
}
KeyboardDevice::~KeyboardDevice()
{
}
bool KeyboardDevice::can_read(FileDescriptor&) const
{
return !m_queue.is_empty();
}
ssize_t KeyboardDevice::read(FileDescriptor&, byte* buffer, ssize_t size)
{
ssize_t nread = 0;
while (nread < size) {
if (m_queue.is_empty())
break;
// Don't return partial data frames.
if ((size - nread) < (ssize_t)sizeof(Event))
break;
auto event = m_queue.dequeue();
memcpy(buffer, &event, sizeof(Event));
nread += sizeof(Event);
}
return nread;
}
ssize_t KeyboardDevice::write(FileDescriptor&, const byte*, ssize_t)
{
return 0;
}
KeyboardClient::~KeyboardClient()
{
}
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