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Kernel: Introduce a new HID subsystem
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.
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23 changed files with 942 additions and 410 deletions
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@ -27,7 +27,7 @@
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#pragma once
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#include <Kernel/Console.h>
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#include <Kernel/Devices/KeyboardDevice.h>
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#include <Kernel/Devices/HID/HIDManagement.h>
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#include <Kernel/TTY/TTY.h>
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#include <LibVT/Terminal.h>
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@ -51,7 +51,7 @@ public:
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private:
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// ^KeyboardClient
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virtual void on_key_pressed(KeyboardDevice::Event) override;
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virtual void on_key_pressed(KeyEvent) override;
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// ^TTY
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virtual ssize_t on_tty_write(const UserOrKernelBuffer&, ssize_t) override;
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