mirror of
https://github.com/RGBCube/serenity
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8cbb7f101f
This will allow us to implement different behaviors depending on the role of the descriptor a File is being accessed through.
239 lines
6.3 KiB
C++
239 lines
6.3 KiB
C++
#include <AK/Types.h>
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#include "i386.h"
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#include "IO.h"
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#include "PIC.h"
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#include <Kernel/Devices/KeyboardDevice.h>
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#include <Kernel/TTY/VirtualConsole.h>
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#include <AK/Assertions.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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{
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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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{
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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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{
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Key_Invalid, Key_Escape,
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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,
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Key_Tab, //15
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Key_Q, Key_W, Key_E, Key_R, Key_T, Key_Y, Key_U, Key_I, Key_O, Key_P, Key_LeftBracket, Key_RightBracket,
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Key_Return, // 28
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Key_Control, // 29
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Key_A, Key_S, Key_D, Key_F, Key_G, Key_H, Key_J, Key_K, Key_L, Key_Semicolon, Key_Apostrophe, Key_Backtick,
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Key_LeftShift, // 42
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Key_Backslash,
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Key_Z, Key_X, Key_C, Key_V, Key_B, Key_N, Key_M, Key_Comma, Key_Period, 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, Key_F2, Key_F3, Key_F4, Key_F5, Key_F6, Key_F7, Key_F8, Key_F9, 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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{
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Key_Invalid, Key_Escape,
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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,
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Key_Tab,
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Key_Q, Key_W, Key_E, Key_R, Key_T, Key_Y, Key_U, Key_I, Key_O, Key_P, Key_LeftBrace, Key_RightBrace,
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Key_Return,
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Key_Control,
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Key_A, Key_S, Key_D, Key_F, Key_G, Key_H, Key_J, Key_K, Key_L, Key_Colon, Key_DoubleQuote, Key_Tilde,
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Key_LeftShift, // 42
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Key_Pipe,
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Key_Z, Key_X, Key_C, Key_V, Key_B, Key_N, Key_M, Key_LessThan, Key_GreaterThan, 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, Key_F2, Key_F3, Key_F4, Key_F5, Key_F6, Key_F7, Key_F8, Key_F9, 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(byte 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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byte 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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byte raw = IO::in8(I8042_BUFFER);
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byte 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: 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(FileDescriptor&) 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(FileDescriptor&, byte* 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(FileDescriptor&, const byte*, 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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