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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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4
Kernel/FileSystem/ProcFS.cpp
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@ -36,7 +36,7 @@
#include <Kernel/DMI.h>
#include <Kernel/Debug.h>
#include <Kernel/Devices/BlockDevice.h>
#include <Kernel/Devices/KeyboardDevice.h>
#include <Kernel/Devices/HID/HIDManagement.h>
#include <Kernel/FileSystem/Custody.h>
#include <Kernel/FileSystem/FileBackedFileSystem.h>
#include <Kernel/FileSystem/FileDescription.h>
@ -418,7 +418,7 @@ static bool procfs$interrupts(InodeIdentifier, KBufferBuilder& builder)
static bool procfs$keymap(InodeIdentifier, KBufferBuilder& builder)
{
JsonObjectSerializer<KBufferBuilder> json { builder };
json.add("keymap", KeyboardDevice::the().keymap_name());
json.add("keymap", HIDManagement::the().keymap_name());
json.finish();
return true;
}