HostKeyboard Class Reference

A PS/2 host keyboard and mouse driver. More...

Inheritance diagram for HostKeyboard:

Public Member Functions
bool	receive (MessageIrq &msg)
bool	receive (MessageLegacy &msg)
	HostKeyboard (DBus< MessageHwIOIn > &bus_hwioin, DBus< MessageHwIOOut > &bus_hwioout, DBus< MessageInput > &bus_input, Clock *clock, unsigned hostdev, unsigned short base, unsigned irq, unsigned irqaux, unsigned char scset, bool verbose)
Public Member Functions inherited from StaticReceiver< HostKeyboard >
	StaticReceiver ()
Public Member Functions inherited from Device
void	debug_dump ()
	Device (const char *debug_name)

Private Member Functions
bool	wait_status (unsigned char mask, unsigned char value)
bool	wait_output_full ()
bool	wait_input_empty ()
bool	disable_devices ()
bool	enable_devices ()
bool	read_cmd (unsigned char cmd, unsigned char &value)
bool	write_cmd (unsigned char cmd, unsigned char value)
bool	wait_ack ()
bool	write_keyboard_ack (unsigned char value)
bool	write_mouse_ack (unsigned char value)
void	handle_aux (unsigned char data)
void	handle_scancode (unsigned char key)
	Handle a scancode send from the keyboard.

Private Attributes
DBus< MessageInput > &	_bus_input
Clock *	_clock
unsigned	_hostdev
unsigned short	_base
unsigned	_irq
unsigned	_irqaux
unsigned	_flags
unsigned	_mousestate
bool	_scset1
bool	_verbose

Static Private Attributes
static unsigned const	FREQ = 1000
static unsigned const	TIMEOUT = 50

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

Detailed Description

A PS/2 host keyboard and mouse driver.

Translates SCS2 keycodes to single extended keycode and mouse movements to mouse packets. Both are forwarded on the keycode bus.

State: stable Features: scancode set1+2, simple PS2 mouse Missing: z-axis Documentation: PS2 hitrc chapter 7+11, scancodes-13.html

Constructor & Destructor Documentation

HostKeyboard::HostKeyboard ( DBus< MessageHwIOIn > &  bus_hwioin, DBus< MessageHwIOOut > &  bus_hwioout, DBus< MessageInput > &  bus_input, Clock *  clock, unsigned  hostdev, unsigned short  base, unsigned  irq, unsigned  irqaux, unsigned char  scset, bool  verbose  )

inline

Member Function Documentation

bool HostKeyboard::disable_devices ( )

inlineprivate

bool HostKeyboard::enable_devices ( )

inlineprivate

void HostKeyboard::handle_aux ( unsigned char  data )

inlineprivate

void HostKeyboard::handle_scancode ( unsigned char  key )

inlineprivate

Handle a scancode send from the keyboard.

There are some bad BIOSes around which do not emulate SC2. We have to convert from SC1.

We have a small state machine here, as the keyboard runs with scancode set 2. SCS3 would be much nicer but is not available everywhere.

bool HostKeyboard::read_cmd ( unsigned char  cmd, unsigned char &  value  )

inlineprivate

bool HostKeyboard::receive ( MessageIrq &  msg )

inline

bool HostKeyboard::receive ( MessageLegacy &  msg )

inline

bool HostKeyboard::wait_ack ( )

inlineprivate

bool HostKeyboard::wait_input_empty ( )

inlineprivate

bool HostKeyboard::wait_output_full ( )

inlineprivate

bool HostKeyboard::wait_status ( unsigned char  mask, unsigned char  value  )

inlineprivate

bool HostKeyboard::write_cmd ( unsigned char  cmd, unsigned char  value  )

inlineprivate

bool HostKeyboard::write_keyboard_ack ( unsigned char  value )

inlineprivate

bool HostKeyboard::write_mouse_ack ( unsigned char  value )

inlineprivate

Member Data Documentation

unsigned short HostKeyboard::_base

private

DBus<MessageInput>& HostKeyboard::_bus_input

private

Clock* HostKeyboard::_clock

private

unsigned HostKeyboard::_flags

private

unsigned HostKeyboard::_hostdev

private

unsigned HostKeyboard::_irq

private

unsigned HostKeyboard::_irqaux

private

unsigned HostKeyboard::_mousestate

private

bool HostKeyboard::_scset1

private

bool HostKeyboard::_verbose

private

unsigned const HostKeyboard::FREQ = 1000

staticprivate

unsigned const HostKeyboard::TIMEOUT = 50

staticprivate

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

• base/host/hostkeyboard.cc