PicDevice Class Reference

An implementation of the Intel 8259. More...

Inheritance diagram for PicDevice:

Public Member Functions
bool	receive (MessageLegacy &msg)
	The CPU send an int-ack cycle?
bool	receive (MessagePic &msg)
	We get an request on the three-wire PIC bus.
bool	receive (MessageIOIn &msg)
bool	receive (MessageIOOut &msg)
	Write to the PIC via IO ports.
bool	receive (MessageIrqLines &msg)
	Raise the an irqline.
	PicDevice (DBus< MessageIrqLines > &bus_irq, DBus< MessagePic > &bus_pic, DBus< MessageLegacy > &bus_legacy, DBus< MessageIrqNotify > &bus_notify, unsigned short base, unsigned char irq, unsigned short elcr_base, unsigned char virq)
Public Member Functions inherited from StaticReceiver< PicDevice >
	StaticReceiver ()
Public Member Functions inherited from Device
void	debug_dump ()
	Device (const char *debug_name)

Private Types
enum	ICW_MODE {   ICW1, ICW2, ICW3, ICW4,   OCW1 = 0 }
enum	{   ICW1_IC4 = 0x01, ICW1_SNGL = 0x02, ICW1_LTIM = 0x08, ICW4_AEOI = 0x02,   ICW4_MS = 0x04, ICW4_BUF = 0x08, ICW4_SFNM = 0x10 }

Private Member Functions
bool	is_slave ()
void	rotate_prios ()
void	specific_eoi (unsigned char irq)
void	non_specific_eoi ()
void	reset_values ()
bool	prioritize_irq (unsigned char &irq_index, bool int_ack)
	Check whether irqs will happen, optionally ACK irq and return the irq index.
void	propagate_irq (bool send_deassert)
	Propagate an irq upstream.
void	get_irqvector (unsigned char &res)
	Upstream requests an irq vector.

Private Attributes
DBus< MessageIrqLines > &	_bus_irq
DBus< MessagePic > &	_bus_pic
DBus< MessageLegacy > &	_bus_legacy
DBus< MessageIrqNotify > &	_bus_notify
unsigned short	_base
unsigned	_upstream_irq
unsigned short	_elcr_base
unsigned char	_virq
unsigned char	_icw [4]
ICW_MODE	_icw_mode
bool	_rotate_on_aeoi
bool	_smm
bool	_read_isr_reg
bool	_poll_mode
unsigned char	_prio_lowest
unsigned char	_imr
unsigned char	_isr
unsigned char	_irr
unsigned char	_elcr
unsigned char	_notify

Additional Inherited Members
Static Public Member Functions inherited from StaticReceiver< PicDevice >
static bool	receive_static (Device *o, M &msg)

Detailed Description

An implementation of the Intel 8259.

State: stable Ignored bits: ADI, yPM Documentation: Intel 8259a - 8259A.pdf

Member Enumeration Documentation

anonymous enum

private

Enumerator:

ICW1_IC4
ICW1_SNGL
ICW1_LTIM
ICW4_AEOI
ICW4_MS
ICW4_BUF
ICW4_SFNM

enum PicDevice::ICW_MODE

private

Enumerator:

ICW1
ICW2
ICW3
ICW4
OCW1

Constructor & Destructor Documentation

PicDevice::PicDevice ( DBus< MessageIrqLines > &  bus_irq, DBus< MessagePic > &  bus_pic, DBus< MessageLegacy > &  bus_legacy, DBus< MessageIrqNotify > &  bus_notify, unsigned short  base, unsigned char  irq, unsigned short  elcr_base, unsigned char  virq  )

inline

Member Function Documentation

void PicDevice::get_irqvector ( unsigned char &  res )

inlineprivate

Upstream requests an irq vector.

bool PicDevice::is_slave ( )

inlineprivate

void PicDevice::non_specific_eoi ( )

inlineprivate

bool PicDevice::prioritize_irq ( unsigned char &  irq_index, bool  int_ack  )

inlineprivate

Check whether irqs will happen, optionally ACK irq and return the irq index.

void PicDevice::propagate_irq ( bool  send_deassert )

inlineprivate

Propagate an irq upstream.

bool PicDevice::receive ( MessageLegacy &  msg )

inline

The CPU send an int-ack cycle?

bool PicDevice::receive ( MessagePic &  msg )

inline

We get an request on the three-wire PIC bus.

bool PicDevice::receive ( MessageIOIn &  msg )

inline

bool PicDevice::receive ( MessageIOOut &  msg )

inline

Write to the PIC via IO ports.

bool PicDevice::receive ( MessageIrqLines &  msg )

inline

Raise the an irqline.

This function needs to be multi-entrance ready! It should only touch the _irr.

void PicDevice::reset_values ( )

inlineprivate

void PicDevice::rotate_prios ( )

inlineprivate

void PicDevice::specific_eoi ( unsigned char  irq )

inlineprivate

Member Data Documentation

unsigned short PicDevice::_base

private

DBus<MessageIrqLines>& PicDevice::_bus_irq

private

DBus<MessageLegacy>& PicDevice::_bus_legacy

private

DBus<MessageIrqNotify>& PicDevice::_bus_notify

private

DBus<MessagePic>& PicDevice::_bus_pic

private

unsigned char PicDevice::_elcr

private

unsigned short PicDevice::_elcr_base

private

unsigned char PicDevice::_icw[4]

private

ICW_MODE PicDevice::_icw_mode

private

unsigned char PicDevice::_imr

private

unsigned char PicDevice::_irr

private

unsigned char PicDevice::_isr

private

unsigned char PicDevice::_notify

private

bool PicDevice::_poll_mode

private

unsigned char PicDevice::_prio_lowest

private

bool PicDevice::_read_isr_reg

private

bool PicDevice::_rotate_on_aeoi

private

bool PicDevice::_smm

private

unsigned PicDevice::_upstream_irq

private

unsigned char PicDevice::_virq

private

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

• vancouver/model/pic8259.cc