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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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9
Kernel/Syscalls/keymap.cpp
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@ -24,7 +24,7 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <Kernel/Devices/KeyboardDevice.h>
#include <Kernel/Devices/HID/HIDManagement.h>
#include <Kernel/Process.h>
namespace Kernel {
@ -62,8 +62,7 @@ KResultOr<int> Process::sys$setkeymap(Userspace<const Syscall::SC_setkeymap_para
if (map_name.value().length() > map_name_max_size) {
return ENAMETOOLONG;
}
KeyboardDevice::the().set_maps(character_map_data, map_name.value());
HIDManagement::the().set_maps(character_map_data, map_name.value());
return 0;
}
@ -75,8 +74,8 @@ KResultOr<int> Process::sys$getkeymap(Userspace<const Syscall::SC_getkeymap_para
if (!copy_from_user(&params, user_params))
return EFAULT;
String keymap_name = KeyboardDevice::the().keymap_name();
const Keyboard::CharacterMapData& character_maps = KeyboardDevice::the().character_maps();
String keymap_name = HIDManagement::the().keymap_name();
const Keyboard::CharacterMapData& character_maps = HIDManagement::the().character_maps();
if (!copy_to_user(params.map, character_maps.map, CHAR_MAP_SIZE * sizeof(u32)))
return EFAULT;