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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Types.h>
#include <Kernel/Arch/x86_64/ISABus/HID/PS2KeyboardDevice.h>
#include <Kernel/Debug.h>
#include <Kernel/Devices/DeviceManagement.h>
#include <Kernel/Devices/HID/Management.h>
#include <Kernel/Devices/HID/ScanCodeEvent.h>
#include <Kernel/Sections.h>
#include <Kernel/TTY/ConsoleManagement.h>
#include <Kernel/Tasks/Scheduler.h>
#include <Kernel/Tasks/WorkQueue.h>
namespace Kernel {
#define IRQ_KEYBOARD 1
void PS2KeyboardDevice::irq_handle_byte_read(u8 byte)
{
u8 ch = byte & 0x7f;
bool pressed = !(byte & 0x80);
if (byte == 0xe0) {
m_has_e0_prefix = true;
return;
}
ScanCodeEvent event {};
event.pressed = pressed;
event.e0_prefix = m_has_e0_prefix;
m_has_e0_prefix = false;
dbgln_if(KEYBOARD_DEBUG, "Keyboard::irq_handle_byte_read: {:#02x} {}", ch, (pressed ? "down" : "up"));
event.scan_code_value = ch;
m_keyboard_device->handle_scan_code_input_event(event);
}
bool PS2KeyboardDevice::handle_irq(RegisterState const&)
{
// The controller will read the data and call irq_handle_byte_read
// for the appropriate device
return m_i8042_controller->irq_process_input_buffer(instrument_type());
}
UNMAP_AFTER_INIT ErrorOr<NonnullOwnPtr<PS2KeyboardDevice>> PS2KeyboardDevice::try_to_initialize(I8042Controller const& ps2_controller, KeyboardDevice const& keyboard_device)
{
auto device = TRY(adopt_nonnull_own_or_enomem(new (nothrow) PS2KeyboardDevice(ps2_controller, keyboard_device)));
TRY(device->initialize());
return device;
}
UNMAP_AFTER_INIT ErrorOr<void> PS2KeyboardDevice::initialize()
{
return m_i8042_controller->reset_device(PS2Device::Type::Keyboard);
}
// FIXME: UNMAP_AFTER_INIT might not be correct, because in practice PS/2 devices
// are hot pluggable.
UNMAP_AFTER_INIT PS2KeyboardDevice::PS2KeyboardDevice(I8042Controller const& ps2_controller, KeyboardDevice const& keyboard_device)
: IRQHandler(IRQ_KEYBOARD)
, PS2Device(ps2_controller)
, m_keyboard_device(keyboard_device)
{
}
// FIXME: UNMAP_AFTER_INIT might not be correct, because in practice PS/2 devices
// are hot pluggable.
UNMAP_AFTER_INIT PS2KeyboardDevice::~PS2KeyboardDevice() = default;
}
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