SerialDevice Class Reference

Implements a 16550 UART. More...

Inheritance diagram for SerialDevice:

Public Member Functions
bool	receive (MessageSerial &msg)
bool	receive (MessageIOIn &msg)
bool	receive (MessageIOOut &msg)
void	discovery ()
	SerialDevice (Motherboard &mb, unsigned short base, unsigned char irq, unsigned hostserial)
Public Member Functions inherited from StaticReceiver< SerialDevice >
	StaticReceiver ()
Public Member Functions inherited from Device
void	debug_dump ()
	Device (const char *debug_name)

Public Attributes
Motherboard &	_mb

Private Types
enum	{   RBR = 0, THR = 0, IER, FCR,   IIR = FCR, LCR, MCR, LSR,   MSR, SCR, DLL, DLM,   MAX }

Private Member Functions
unsigned char	get_iir ()
	Returns the IIR and thereby prioritize the interrupts.
void	update_irq ()

Private Attributes
unsigned short	_base
unsigned char	_irq
unsigned	_hostserial
unsigned char	_regs [MAX]
unsigned char	_rfifo [FIFOSIZE]
unsigned char	_rfpos
unsigned char	_rfcount
unsigned char	_triggerlevel
unsigned char	_sendmask

Static Private Attributes
static const unsigned	FIFOSIZE = 16

Additional Inherited Members
Static Public Member Functions inherited from StaticReceiver< SerialDevice >
static bool	receive_static (Device *o, M &msg)
Static Public Member Functions inherited from DiscoveryHelper< SerialDevice >
static bool	discover (Device *o, MessageDiscovery &msg)
Protected Member Functions inherited from DiscoveryHelper< SerialDevice >
bool	discovery_write_st (const char *resource, unsigned offset, const void *value, unsigned count)
bool	discovery_write_dw (const char *resource, unsigned offset, unsigned value, unsigned count=4)
	Write a dword or less than it.
bool	discovery_read_dw (const char *resource, unsigned offset, unsigned &value)
	Read a dword.
unsigned	discovery_length (const char *resource, unsigned minlen)
	Return the length of an ACPI table or minlen if it is smaller.

Detailed Description

Implements a 16550 UART.

State: stable Missing Features:

• no write fifo
• no transmission effect of stopbit+parity+divisor
• no character timeout indication -> need a timer for that
• no MSR setting via client
• no HW reset support Ignored bits: FCR2-3, LCR2-6, LSR2-4,7 Documentation: NSC 16550D - PC16550D.pdf

Member Enumeration Documentation

anonymous enum

private

Enumerator:

RBR
THR
IER
FCR
IIR
LCR
MCR
LSR
MSR
SCR
DLL
DLM
MAX

Constructor & Destructor Documentation

SerialDevice::SerialDevice ( Motherboard &  mb, unsigned short  base, unsigned char  irq, unsigned  hostserial  )

inline

Member Function Documentation

void SerialDevice::discovery ( )

inline

unsigned char SerialDevice::get_iir ( )

inlineprivate

Returns the IIR and thereby prioritize the interrupts.

bool SerialDevice::receive ( MessageSerial &  msg )

inline

bool SerialDevice::receive ( MessageIOIn &  msg )

inline

bool SerialDevice::receive ( MessageIOOut &  msg )

inline

void SerialDevice::update_irq ( )

inlineprivate

Member Data Documentation

unsigned short SerialDevice::_base

private

unsigned SerialDevice::_hostserial

private

unsigned char SerialDevice::_irq

private

Motherboard& SerialDevice::_mb

unsigned char SerialDevice::_regs[MAX]

private

unsigned char SerialDevice::_rfcount

private

unsigned char SerialDevice::_rfifo[FIFOSIZE]

private

unsigned char SerialDevice::_rfpos

private

unsigned char SerialDevice::_sendmask

private

unsigned char SerialDevice::_triggerlevel

private

const unsigned SerialDevice::FIFOSIZE = 16

staticprivate

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

• vancouver/model/serial16550.cc