I/O subsystem

The input/output subsystem. More...

Files
file	outputstream.h
	This file contains the OutputStream.

Namespaces
namespace	ACPI
	Abstracts the ACPI standard that provides interfaces for hardware detection, device configuration, and energy management.
namespace	PS2Controller
	PS/2 Controller.

Classes
class	CopyStream
	Duplicate all data passed by the stream operator to two output streams. More...
class	NullStream
	Ignore all data passed by the stream operator. More...
class	Keyboard
	Handles keystrokes. More...
class	Mouse
	Handles mouse movements and clicks. More...
class	SerialStream
	Console (VT100 compatible) via Serial interface. More...
class	TextStream
	Output text (form different data type sources) on screen in text mode. More...
struct	ACPI::RSDP
	Root System Description Pointer (RSDP) More...
struct	ACPI::SDTH
	System Description Table Header (SDTH) More...
struct	ACPI::RSDT
	Root System Description Table (RSDT) More...
struct	ACPI::XSDT
	Extended System Description Table (XSDT) More...
struct	ACPI::SubHeader
	Helper structure. More...
struct	ACPI::MADT
	Multiple APIC Description Table (MADT) More...
struct	ACPI::Address
	ACPI address format. More...
struct	ACPI::MADS::LAPIC
	Processor Local APIC (LAPIC) Structure. More...
struct	ACPI::MADS::IOAPIC
	I/O APIC Structure. More...
struct	ACPI::MADS::Interrupt_Source_Override
	Interrupt Source Override Structure. More...
struct	ACPI::MADS::LAPIC_Address_Override
	Local APIC Address Override Structure. More...
class	KeyDecoder
	Decoder for keyboard codes received from the PS2Controller. More...
class	MouseDecoder
	Decoder for mouse codes received from the PS2Controller. More...
struct	MouseDecoder::MousePacket.__unnamed58__
struct	ACPI::MADS::LAPIC_Address_Override.__unnamed12__.__unnamed14__
union	ACPI::MADS::LAPIC_Address_Override.__unnamed12__
class	TextMode
	Basic operations in the VGA-compatible text mode. More...
struct	TextMode::Attribute.__unnamed66__
union	TextMode::Attribute
	Structure of a character attribute consists of 4 bit fore- and 3 bit background color, and a single blink bit. More...
struct	TextMode::Cell
	Structure for a cell in text mode. More...
class	Serial
	Serial interface. More...
class	TextWindow
	Virtual windows in text mode. More...

Detailed Description

The input/output subsystem.

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Class Documentation

ACPI::RSDP

struct ACPI::RSDP

Root System Description Pointer (RSDP)

The first step to using ACPI is finding the RSDP that is used to find the RSDT / XSDT, which themselves contain pointers to even more tables.

On UEFI systems, the RSDP can be found in the EFI_SYSTEM_TABLE; for non-UEFI systems we have to search for the signature 'RSD PTR ' in the EBDA (Extended Bios Data Area) or in the memory area up to FFFFFh.

See also

ACPI-Specification 5.2.5.3; Root System Description Pointer (RSDP) Structure

Class Members
char	signature[8]
uint8_t	checksum
char	oemid[6]
uint8_t	revision
uint32_t	rsdtaddress
uint32_t	length
uint64_t	xsdtaddress
uint8_t	extended_checksum
uint8_t	reserved[3]

ACPI::Address

struct ACPI::Address

ACPI address format.

The ACPI standard defines its own address format that is able to handle addresses both in memory address space, as well as IO-port address space.

Class Members
AddressSpace	address_space
uint8_t	register_bit_width
uint8_t	register_bit_offset
uint8_t	reserved
uint64_t	address

MouseDecoder::MousePacket.__unnamed58__

struct MouseDecoder::MousePacket.__unnamed58__

Class Members
uint8_t	button_left: 1
uint8_t	button_right: 1
uint8_t	button_middle: 1
uint8_t	always_1: 1
uint8_t	sign_x: 1
uint8_t	sign_y: 1
uint8_t	overflow_x: 1
uint8_t	overflow_y: 1

ACPI::MADS::LAPIC_Address_Override.__unnamed12__.__unnamed14__

struct ACPI::MADS::LAPIC_Address_Override.__unnamed12__.__unnamed14__

Class Members
uint32_t	lapic_address_low
uint32_t	lapic_address_high

ACPI::MADS::LAPIC_Address_Override.__unnamed12__

union ACPI::MADS::LAPIC_Address_Override.__unnamed12__

Class Members
uint64_t	lapic_address
struct LAPIC_Address_Override.__unnamed12__.__unnamed14__	__unnamed__

TextMode::Attribute.__unnamed66__

struct TextMode::Attribute.__unnamed66__

Class Members
uint8_t	foreground: 4	.... XXXX Foreground color
uint8_t	background: 3	.XXX .... Background color
uint8_t	blink: 1	X... .... Blink