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/* -------------------------------------------
Copyright ZKA Technologies.
File: PS2MouseInterface.hxx
Purpose: PS/2 mouse.
Revision History:
03/02/24: Added file (amlel)
------------------------------------------- */
#pragma once
#include <ArchKit/ArchKit.hxx>
#include <CompilerKit/CompilerKit.hxx>
#include <NewKit/Defines.hxx>
namespace Kernel
{
/// @brief PS/2 Mouse driver interface
class PS2MouseInterface final
{
public:
explicit PS2MouseInterface() = default;
~PS2MouseInterface() = default;
ZKA_COPY_DEFAULT(PS2MouseInterface);
public:
/// @brief Enables PS2 mouse for kernel.
/// @return
Void Init() noexcept
{
HAL::rt_cli();
HAL::Out8(0x64, 0xA8); // enabling the auxiliary device - mouse
this->Wait();
HAL::Out8(0x64, 0x20); // tells the keyboard controller that we want to send a command to the mouse
this->WaitInput();
UInt8 status = HAL::In8(0x60);
status |= 0b10;
this->Wait();
HAL::Out8(0x64, 0x60);
this->Wait();
HAL::Out8(0x60, status); // setting the correct bit is the "compaq" status byte
this->Write(0xF6);
this->Read();
this->Write(0xF4);
this->Read();
HAL::rt_sti();
}
public:
Bool WaitInput() noexcept
{
UInt64 timeout = 100000;
while (timeout)
{
if ((HAL::In8(0x64) & 0x1))
{
return true;
}
--timeout;
} // wait until we can read
// return the ack bit.
return false;
}
Bool Wait() noexcept
{
UInt64 timeout = 100000;
while (timeout)
{
if ((HAL::In8(0x64) & 0b10) == 0)
{
return true;
}
--timeout;
} // wait until we can read
// return the ack bit.
return false;
}
Void Write(UInt8 val)
{
HAL::Out8(0x64, 0xD4);
this->Wait();
HAL::Out8(0x60, val);
this->Wait();
}
UInt8 Read()
{
this->WaitInput();
return HAL::In8(0x60);
}
};
} // namespace Kernel
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