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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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6
Kernel/init.cpp
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@ -34,7 +34,7 @@
#include <Kernel/DMI.h>
#include <Kernel/Devices/BXVGADevice.h>
#include <Kernel/Devices/FullDevice.h>
#include <Kernel/Devices/I8042Controller.h>
#include <Kernel/Devices/HID/HIDManagement.h>
#include <Kernel/Devices/MBVGADevice.h>
#include <Kernel/Devices/MemoryDevice.h>
#include <Kernel/Devices/NullDevice.h>
@ -163,7 +163,6 @@ extern "C" UNMAP_AFTER_INIT [[noreturn]] void init()
ACPI::initialize();
VFS::initialize();
I8042Controller::initialize();
Console::initialize();
dmesgln("Starting SerenityOS...");
@ -179,6 +178,8 @@ extern "C" UNMAP_AFTER_INIT [[noreturn]] void init()
new SerialDevice(SERIAL_COM3_ADDR, 66);
new SerialDevice(SERIAL_COM4_ADDR, 67);
VMWareBackdoor::the(); // don't wait until first mouse packet
HIDManagement::initialize();
VirtualConsole::initialize();
tty0 = new VirtualConsole(0);
for (unsigned i = 1; i < s_max_virtual_consoles; i++) {
@ -295,7 +296,6 @@ void init_stage2(void*)
new RandomDevice;
PTYMultiplexer::initialize();
SB16::detect();
VMWareBackdoor::the(); // don't wait until first mouse packet
StorageManagement::initialize(kernel_command_line().root_device(), kernel_command_line().is_force_pio());
if (!VFS::the().mount_root(StorageManagement::the().root_filesystem())) {