mirror of
https://github.com/RGBCube/serenity
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27f699ef0c
These types can be picked up by including <AK/Types.h>: * u8, u16, u32, u64 (unsigned) * i8, i16, i32, i64 (signed)
342 lines
6.7 KiB
C++
342 lines
6.7 KiB
C++
#include "IO.h"
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#include "PIC.h"
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#include <AK/Assertions.h>
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#include <AK/Types.h>
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#include <Kernel/Arch/i386/CPU.h>
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#include <Kernel/Devices/KeyboardDevice.h>
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#include <Kernel/TTY/VirtualConsole.h>
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//#define KEYBOARD_DEBUG
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#define IRQ_KEYBOARD 1
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#define I8042_BUFFER 0x60
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#define I8042_STATUS 0x64
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#define I8042_ACK 0xFA
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#define I8042_BUFFER_FULL 0x01
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#define I8042_WHICH_BUFFER 0x20
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#define I8042_MOUSE_BUFFER 0x20
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#define I8042_KEYBOARD_BUFFER 0x00
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static char map[0x80] = {
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0, '\033', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', 0x08, '\t',
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'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n', 0,
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'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', '`', 0, '\\',
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'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
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0, 0, 0, ' '
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};
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static char shift_map[0x80] = {
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0, '\033', '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+', 0x08, '\t',
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'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n', 0,
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'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"', '~', 0, '|',
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'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
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0, 0, 0, ' '
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};
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static KeyCode unshifted_key_map[0x80] = {
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Key_Invalid,
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Key_Escape,
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Key_1,
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Key_2,
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Key_3,
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Key_4,
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Key_5,
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Key_6,
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Key_7,
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Key_8,
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Key_9,
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Key_0,
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Key_Minus,
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Key_Equal,
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Key_Backspace,
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Key_Tab, //15
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Key_Q,
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Key_W,
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Key_E,
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Key_R,
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Key_T,
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Key_Y,
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Key_U,
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Key_I,
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Key_O,
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Key_P,
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Key_LeftBracket,
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Key_RightBracket,
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Key_Return, // 28
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Key_Control, // 29
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Key_A,
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Key_S,
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Key_D,
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Key_F,
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Key_G,
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Key_H,
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Key_J,
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Key_K,
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Key_L,
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Key_Semicolon,
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Key_Apostrophe,
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Key_Backtick,
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Key_LeftShift, // 42
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Key_Backslash,
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Key_Z,
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Key_X,
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Key_C,
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Key_V,
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Key_B,
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Key_N,
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Key_M,
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Key_Comma,
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Key_Period,
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Key_Slash,
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Key_RightShift, // 54
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Key_Invalid,
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Key_Alt, // 56
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Key_Space, // 57
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Key_Invalid, // 58
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Key_F1,
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Key_F2,
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Key_F3,
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Key_F4,
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Key_F5,
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Key_F6,
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Key_F7,
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Key_F8,
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Key_F9,
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Key_F10,
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Key_Invalid,
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Key_Invalid, // 70
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Key_Home,
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Key_Up,
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Key_PageUp,
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Key_Invalid,
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Key_Left,
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Key_Invalid,
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Key_Right, // 77
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Key_Invalid,
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Key_End,
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Key_Down, // 80
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Key_PageDown,
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Key_Invalid,
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Key_Delete, // 83
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Key_Invalid,
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Key_Invalid,
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Key_Invalid,
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Key_F11,
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Key_F12,
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Key_Invalid,
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Key_Invalid,
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Key_Logo,
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};
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static KeyCode shifted_key_map[0x100] = {
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Key_Invalid,
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Key_Escape,
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Key_ExclamationPoint,
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Key_AtSign,
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Key_Hashtag,
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Key_Dollar,
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Key_Percent,
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Key_Circumflex,
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Key_Ampersand,
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Key_Asterisk,
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Key_LeftParen,
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Key_RightParen,
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Key_Underscore,
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Key_Plus,
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Key_Backspace,
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Key_Tab,
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Key_Q,
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Key_W,
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Key_E,
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Key_R,
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Key_T,
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Key_Y,
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Key_U,
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Key_I,
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Key_O,
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Key_P,
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Key_LeftBrace,
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Key_RightBrace,
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Key_Return,
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Key_Control,
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Key_A,
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Key_S,
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Key_D,
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Key_F,
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Key_G,
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Key_H,
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Key_J,
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Key_K,
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Key_L,
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Key_Colon,
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Key_DoubleQuote,
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Key_Tilde,
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Key_LeftShift, // 42
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Key_Pipe,
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Key_Z,
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Key_X,
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Key_C,
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Key_V,
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Key_B,
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Key_N,
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Key_M,
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Key_LessThan,
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Key_GreaterThan,
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Key_QuestionMark,
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Key_RightShift, // 54
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Key_Invalid,
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Key_Alt,
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Key_Space, // 57
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Key_Invalid, // 58
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Key_F1,
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Key_F2,
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Key_F3,
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Key_F4,
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Key_F5,
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Key_F6,
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Key_F7,
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Key_F8,
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Key_F9,
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Key_F10,
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Key_Invalid,
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Key_Invalid, // 70
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Key_Home,
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Key_Up,
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Key_PageUp,
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Key_Invalid,
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Key_Left,
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Key_Invalid,
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Key_Right, // 77
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Key_Invalid,
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Key_End,
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Key_Down, // 80
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Key_PageDown,
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Key_Invalid,
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Key_Delete, // 83
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Key_Invalid,
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Key_Invalid,
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Key_Invalid,
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Key_F11,
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Key_F12,
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Key_Invalid,
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Key_Invalid,
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Key_Logo,
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};
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void KeyboardDevice::key_state_changed(u8 raw, bool pressed)
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{
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Event event;
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event.key = (m_modifiers & Mod_Shift) ? shifted_key_map[raw] : unshifted_key_map[raw];
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event.character = (m_modifiers & Mod_Shift) ? shift_map[raw] : map[raw];
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event.flags = m_modifiers;
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if (pressed)
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event.flags |= Is_Press;
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if (m_client)
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m_client->on_key_pressed(event);
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m_queue.enqueue(event);
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}
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void KeyboardDevice::handle_irq()
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{
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for (;;) {
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u8 status = IO::in8(I8042_STATUS);
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if (!(((status & I8042_WHICH_BUFFER) == I8042_KEYBOARD_BUFFER) && (status & I8042_BUFFER_FULL)))
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return;
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u8 raw = IO::in8(I8042_BUFFER);
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u8 ch = raw & 0x7f;
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bool pressed = !(raw & 0x80);
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#ifdef KEYBOARD_DEBUG
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dbgprintf("Keyboard::handle_irq: %b %s\n", ch, pressed ? "down" : "up");
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#endif
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switch (ch) {
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case 0x38:
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update_modifier(Mod_Alt, pressed);
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break;
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case 0x1d:
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update_modifier(Mod_Ctrl, pressed);
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break;
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case 0x5b:
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update_modifier(Mod_Logo, pressed);
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break;
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case 0x2a:
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case 0x36:
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update_modifier(Mod_Shift, pressed);
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break;
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}
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switch (ch) {
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case I8042_ACK:
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break;
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default:
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if (m_modifiers & Mod_Alt) {
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switch (map[ch]) {
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case '1':
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case '2':
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case '3':
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case '4':
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VirtualConsole::switch_to(map[ch] - '0' - 1);
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break;
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default:
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break;
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}
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}
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key_state_changed(ch, pressed);
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}
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}
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}
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static KeyboardDevice* s_the;
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KeyboardDevice& KeyboardDevice::the()
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{
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ASSERT(s_the);
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return *s_the;
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}
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KeyboardDevice::KeyboardDevice()
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: IRQHandler(IRQ_KEYBOARD)
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, CharacterDevice(85, 1)
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{
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s_the = this;
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// Empty the buffer of any pending data.
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// I don't care what you've been pressing until now!
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while (IO::in8(I8042_STATUS) & I8042_BUFFER_FULL)
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IO::in8(I8042_BUFFER);
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enable_irq();
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}
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KeyboardDevice::~KeyboardDevice()
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{
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}
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bool KeyboardDevice::can_read(FileDescription&) const
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{
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return !m_queue.is_empty();
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}
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ssize_t KeyboardDevice::read(FileDescription&, u8* buffer, ssize_t size)
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{
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ssize_t nread = 0;
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while (nread < size) {
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if (m_queue.is_empty())
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break;
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// Don't return partial data frames.
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if ((size - nread) < (ssize_t)sizeof(Event))
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break;
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auto event = m_queue.dequeue();
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memcpy(buffer, &event, sizeof(Event));
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nread += sizeof(Event);
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}
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return nread;
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}
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ssize_t KeyboardDevice::write(FileDescription&, const u8*, ssize_t)
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{
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return 0;
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}
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KeyboardClient::~KeyboardClient()
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{
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}
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