MaxOS::hardwarecommunication::Port8Bit Class Reference

Handles 8 bit ports. More...

#include <port.h>

Inheritance diagram for MaxOS::hardwarecommunication::Port8Bit:

Public Member Functions
	Port8Bit (uint16_t port_number)
	Construct a new Port object for ports handling 8 bit read/writes.
virtual void	write (uint8_t data)
	write a byte to the port
virtual uint8_t	read ()
	read a byte from the port

Additional Inherited Members
Protected Member Functions inherited from MaxOS::hardwarecommunication::Port
	Port (uint16_t port_number)
	Construct a new Port object.
Protected Attributes inherited from MaxOS::hardwarecommunication::Port
uint16_t	m_port_number
	The port to write to / read from.

Detailed Description

Handles 8 bit ports.

Definition at line 32 of file port.h.

Constructor & Destructor Documentation

Port8Bit()

Port8Bit::Port8Bit ( uint16_t  port_number )

explicit

Construct a new Port object for ports handling 8 bit read/writes.

Parameters

port_number

The IO port number

Definition at line 30 of file port.cpp.

: Port(port_number) {
}

Member Function Documentation

read()

uint8_t Port8Bit::read ( )

virtual

read a byte from the port

Returns

the byte read

Definition at line 51 of file port.cpp.

                       {
 
    uint8_t result;
    asm volatile("inb %1, %0" : "=a" (result) : "Nd" (m_port_number));
    return result;
}

References MaxOS::hardwarecommunication::Port::m_port_number.

Referenced by MaxOS::drivers::peripherals::KeyboardDriver::activate(), MaxOS::drivers::peripherals::MouseDriver::activate(), MaxOS::drivers::disk::AdvancedTechnologyAttachment::flush(), MaxOS::drivers::peripherals::KeyboardDriver::handle_interrupt(), MaxOS::drivers::disk::AdvancedTechnologyAttachment::identify(), MaxOS::drivers::SerialConsole::put_character(), MaxOS::drivers::disk::AdvancedTechnologyAttachment::read(), MaxOS::drivers::SerialConsole::SerialConsole(), and MaxOS::drivers::disk::AdvancedTechnologyAttachment::write().

write()

void Port8Bit::write ( uint8_t  data )

virtual

write a byte to the port

Parameters

data	the byte to write

Reimplemented in MaxOS::hardwarecommunication::Port8BitSlow.

Definition at line 41 of file port.cpp.

                                 {
 
    asm volatile("outb %0, %1" : : "a" (data), "Nd" (m_port_number));
}

References MaxOS::hardwarecommunication::Port::m_port_number.

Referenced by MaxOS::drivers::peripherals::KeyboardDriver::activate(), MaxOS::drivers::peripherals::MouseDriver::activate(), MaxOS::drivers::disk::AdvancedTechnologyAttachment::flush(), MaxOS::drivers::disk::AdvancedTechnologyAttachment::identify(), MaxOS::drivers::SerialConsole::put_character(), MaxOS::drivers::disk::AdvancedTechnologyAttachment::read(), MaxOS::drivers::SerialConsole::SerialConsole(), and MaxOS::drivers::disk::AdvancedTechnologyAttachment::write().

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The documentation for this class was generated from the following files:

• /home/runner/work/MaxOS/MaxOS/kernel/include/hardwarecommunication/port.h
• /home/runner/work/MaxOS/MaxOS/kernel/src/hardwarecommunication/port.cpp