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Kernel: Introduce a new HID subsystem

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The end goal of this commit is to allow to boot on bare metal with no
PS/2 device connected to the system. It turned out that the original
code relied on the existence of the PS/2 keyboard, so VirtualConsole
called it even though ACPI indicated the there's no i8042 controller on
my real machine because I didn't plug any PS/2 device.
The code is much more flexible, so adding HID support for other type of
hardware (e.g. USB HID) could be much simpler.

Briefly describing the change, we have a new singleton called
HIDManagement, which is responsible to initialize the i8042 controller
if exists, and to enumerate its devices. I also abstracted a bit
things, so now every Human interface device is represented with the
HIDDevice class. Then, there are 2 types of it - the MouseDevice and
KeyboardDevice classes; both are responsible to handle the interface in
the DevFS.

PS2KeyboardDevice, PS2MouseDevice and VMWareMouseDevice classes are
responsible for handling the hardware-specific interface they are
assigned to. Therefore, they are inheriting from the IRQHandler class.
This commit is contained in:
Liav A 2021-04-02 23:21:35 +03:00 • committed by Andreas Kling
parent 32dd9c554b
commit 8e3e3a71cb
23 changed files with 942 additions and 410 deletions
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8
Kernel/TTY/VirtualConsole.cpp
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@ -28,7 +28,7 @@
#include "VirtualConsole.h"
#include <AK/String.h>
#include <Kernel/Arch/x86/CPU.h>
#include <Kernel/Devices/KeyboardDevice.h>
#include <Kernel/Devices/HID/HIDManagement.h>
#include <Kernel/Heap/kmalloc.h>
#include <Kernel/IO.h>
#include <Kernel/StdLib.h>
@ -116,12 +116,12 @@ void VirtualConsole::set_active(bool active)
if (active) {
set_vga_start_row(0);
KeyboardDevice::the().set_client(this);
HIDManagement::the().set_client(this);
m_terminal.m_need_full_flush = true;
flush_dirty_lines();
} else {
KeyboardDevice::the().set_client(nullptr);
HIDManagement::the().set_client(nullptr);
}
}
@ -220,7 +220,7 @@ void VirtualConsole::clear_vga_row(u16 row)
linemem[i] = 0x0720;
}
void VirtualConsole::on_key_pressed(KeyboardDevice::Event event)
void VirtualConsole::on_key_pressed(KeyEvent event)
{
// Ignore keyboard in graphical mode.
if (m_graphical)