mirror of
https://github.com/RGBCube/serenity
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d3ce97e8b2
Some error indication was done by returning bool. This was changed to propagate the error by ErrorOr from the underlying functions. The returntype of the underlying functions was also changed to propagate the error.
116 lines
3.6 KiB
C++
116 lines
3.6 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Types.h>
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#include <Kernel/Arch/x86/IO.h>
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#include <Kernel/Debug.h>
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#include <Kernel/Devices/DeviceManagement.h>
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#include <Kernel/Devices/HID/HIDManagement.h>
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#include <Kernel/Devices/HID/PS2KeyboardDevice.h>
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#include <Kernel/Scheduler.h>
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#include <Kernel/Sections.h>
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#include <Kernel/TTY/ConsoleManagement.h>
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#include <Kernel/WorkQueue.h>
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namespace Kernel {
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#define IRQ_KEYBOARD 1
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void PS2KeyboardDevice::irq_handle_byte_read(u8 byte)
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{
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u8 ch = byte & 0x7f;
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bool pressed = !(byte & 0x80);
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m_entropy_source.add_random_event(byte);
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if (byte == 0xe0) {
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m_has_e0_prefix = true;
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return;
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}
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if ((m_modifiers == (Mod_Alt | Mod_Shift) || m_modifiers == (Mod_Ctrl | Mod_Alt | Mod_Shift)) && byte == 0x58) {
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// Alt+Shift+F12 pressed, dump some kernel state to the debug console.
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ConsoleManagement::the().switch_to_debug();
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Scheduler::dump_scheduler_state(m_modifiers == (Mod_Ctrl | Mod_Alt | Mod_Shift));
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}
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dbgln_if(KEYBOARD_DEBUG, "Keyboard::irq_handle_byte_read: {:#02x} {}", ch, (pressed ? "down" : "up"));
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switch (ch) {
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case 0x38:
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if (m_has_e0_prefix)
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update_modifier(Mod_AltGr, pressed);
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else
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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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m_left_super_pressed = pressed;
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update_modifier(Mod_Super, m_left_super_pressed || m_right_super_pressed);
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break;
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case 0x5c:
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m_right_super_pressed = pressed;
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update_modifier(Mod_Super, m_left_super_pressed || m_right_super_pressed);
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break;
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case 0x2a:
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m_left_shift_pressed = pressed;
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update_modifier(Mod_Shift, m_left_shift_pressed || m_right_shift_pressed);
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break;
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case 0x36:
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m_right_shift_pressed = pressed;
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update_modifier(Mod_Shift, m_left_shift_pressed || m_right_shift_pressed);
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break;
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}
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switch (ch) {
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case I8042Response::Acknowledge:
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break;
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default:
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if ((m_modifiers & Mod_Alt) != 0 && ch >= 2 && ch <= ConsoleManagement::s_max_virtual_consoles + 1) {
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g_io_work->queue([ch]() {
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ConsoleManagement::the().switch_to(ch - 0x02);
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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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bool PS2KeyboardDevice::handle_irq(const RegisterState&)
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{
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// The controller will read the data and call irq_handle_byte_read
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// for the appropriate device
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return m_i8042_controller->irq_process_input_buffer(HIDDevice::Type::Keyboard);
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}
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UNMAP_AFTER_INIT ErrorOr<NonnullRefPtr<PS2KeyboardDevice>> PS2KeyboardDevice::try_to_initialize(const I8042Controller& ps2_controller)
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{
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auto keyboard_device = TRY(DeviceManagement::try_create_device<PS2KeyboardDevice>(ps2_controller));
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TRY(keyboard_device->initialize());
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return keyboard_device;
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}
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UNMAP_AFTER_INIT ErrorOr<void> PS2KeyboardDevice::initialize()
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{
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return m_i8042_controller->reset_device(HIDDevice::Type::Keyboard);
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}
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// FIXME: UNMAP_AFTER_INIT might not be correct, because in practice PS/2 devices
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// are hot pluggable.
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UNMAP_AFTER_INIT PS2KeyboardDevice::PS2KeyboardDevice(const I8042Controller& ps2_controller)
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: IRQHandler(IRQ_KEYBOARD)
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, KeyboardDevice()
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, I8042Device(ps2_controller)
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{
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}
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// FIXME: UNMAP_AFTER_INIT might not be correct, because in practice PS/2 devices
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// are hot pluggable.
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UNMAP_AFTER_INIT PS2KeyboardDevice::~PS2KeyboardDevice() = default;
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}
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