mirror of
https://github.com/RGBCube/serenity
synced 2025-07-27 03:17:35 +00:00
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.
This commit is contained in:
parent
32dd9c554b
commit
8e3e3a71cb
23 changed files with 942 additions and 410 deletions
136
Kernel/Devices/HID/I8042Controller.h
Normal file
136
Kernel/Devices/HID/I8042Controller.h
Normal file
|
@ -0,0 +1,136 @@
|
|||
/*
|
||||
* Copyright (c) 2020, The SerenityOS developers.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright notice, this
|
||||
* list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation
|
||||
* and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/RefCounted.h>
|
||||
#include <Kernel/Devices/HID/KeyboardDevice.h>
|
||||
#include <Kernel/Devices/HID/MouseDevice.h>
|
||||
#include <Kernel/SpinLock.h>
|
||||
|
||||
namespace Kernel {
|
||||
|
||||
#define I8042_BUFFER 0x60
|
||||
#define I8042_STATUS 0x64
|
||||
#define I8042_ACK 0xFA
|
||||
#define I8042_RESEND 0xFE
|
||||
#define I8042_BUFFER_FULL 0x01
|
||||
|
||||
#define I8042_WHICH_BUFFER 0x20
|
||||
|
||||
#define I8042_KEYBOARD_BUFFER 0x00
|
||||
#define I8042_MOUSE_BUFFER 0x20
|
||||
|
||||
class I8042Controller;
|
||||
class I8042Device {
|
||||
public:
|
||||
virtual ~I8042Device() = default;
|
||||
|
||||
virtual void irq_handle_byte_read(u8 byte) = 0;
|
||||
|
||||
protected:
|
||||
explicit I8042Device(const I8042Controller& ps2_controller)
|
||||
: m_i8042_controller(ps2_controller)
|
||||
{
|
||||
}
|
||||
|
||||
NonnullRefPtr<I8042Controller> m_i8042_controller;
|
||||
};
|
||||
|
||||
class PS2KeyboardDevice;
|
||||
class PS2MouseDevice;
|
||||
class I8042Controller : public RefCounted<I8042Controller> {
|
||||
friend class PS2KeyboardDevice;
|
||||
friend class PS2MouseDevice;
|
||||
|
||||
public:
|
||||
static NonnullRefPtr<I8042Controller> initialize();
|
||||
|
||||
void detect_devices();
|
||||
|
||||
bool reset_device(HIDDevice::Type device)
|
||||
{
|
||||
ScopedSpinLock lock(m_lock);
|
||||
return do_reset_device(device);
|
||||
}
|
||||
|
||||
u8 send_command(HIDDevice::Type device, u8 command)
|
||||
{
|
||||
ScopedSpinLock lock(m_lock);
|
||||
return do_send_command(device, command);
|
||||
}
|
||||
u8 send_command(HIDDevice::Type device, u8 command, u8 data)
|
||||
{
|
||||
ScopedSpinLock lock(m_lock);
|
||||
return do_send_command(device, command, data);
|
||||
}
|
||||
|
||||
u8 read_from_device(HIDDevice::Type device)
|
||||
{
|
||||
ScopedSpinLock lock(m_lock);
|
||||
return do_read_from_device(device);
|
||||
}
|
||||
|
||||
void wait_then_write(u8 port, u8 data)
|
||||
{
|
||||
ScopedSpinLock lock(m_lock);
|
||||
do_wait_then_write(port, data);
|
||||
}
|
||||
|
||||
u8 wait_then_read(u8 port)
|
||||
{
|
||||
ScopedSpinLock lock(m_lock);
|
||||
return do_wait_then_read(port);
|
||||
}
|
||||
|
||||
void prepare_for_output();
|
||||
void prepare_for_input(HIDDevice::Type);
|
||||
|
||||
void irq_process_input_buffer(HIDDevice::Type);
|
||||
|
||||
RefPtr<MouseDevice> mouse() const;
|
||||
RefPtr<KeyboardDevice> keyboard() const;
|
||||
|
||||
private:
|
||||
I8042Controller();
|
||||
void do_drain();
|
||||
bool do_reset_device(HIDDevice::Type);
|
||||
u8 do_send_command(HIDDevice::Type type, u8 data);
|
||||
u8 do_send_command(HIDDevice::Type device, u8 command, u8 data);
|
||||
u8 do_write_to_device(HIDDevice::Type device, u8 data);
|
||||
u8 do_read_from_device(HIDDevice::Type device);
|
||||
void do_wait_then_write(u8 port, u8 data);
|
||||
u8 do_wait_then_read(u8 port);
|
||||
|
||||
SpinLock<u8> m_lock;
|
||||
bool m_first_port_available { false };
|
||||
bool m_second_port_available { false };
|
||||
bool m_is_dual_channel { false };
|
||||
RefPtr<MouseDevice> m_mouse_device;
|
||||
RefPtr<KeyboardDevice> m_keyboard_device;
|
||||
};
|
||||
|
||||
}
|
Loading…
Add table
Add a link
Reference in a new issue