IDE Disk device model. More...

#include <ide_disk.hh>

Inheritance diagram for gem5::IdeDisk:

Classes
struct	IdeDiskStats

Public Types
typedef IdeDiskParams	Params

Public Types inherited from gem5::SimObject
typedef SimObjectParams	Params

Public Member Functions
	IdeDisk (const Params &p)

	~IdeDisk ()
	Delete the data buffer.

void	reset (int id)
	Reset the device state.

void	setChannel (IdeController::Channel *_channel, Addr chunk_bytes)
	Set the controller for this device.

void	readCommand (const Addr offset, int size, uint8_t *data)

void	readControl (const Addr offset, int size, uint8_t *data)

void	writeCommand (const Addr offset, int size, const uint8_t *data)

void	writeControl (const Addr offset, int size, const uint8_t *data)

void	startDma (const uint32_t &prdTableBase)

void	abortDma ()

Public Member Functions inherited from gem5::SimObject
const Params &	params () const

	SimObject (const Params &p)

virtual	~SimObject ()

virtual void	init ()
	init() is called after all C++ SimObjects have been created and all ports are connected.

virtual void	loadState (CheckpointIn &cp)
	loadState() is called on each SimObject when restoring from a checkpoint.

virtual void	initState ()
	initState() is called on each SimObject when not restoring from a checkpoint.

virtual void	regProbePoints ()
	Register probe points for this object.

virtual void	regProbeListeners ()
	Register probe listeners for this object.

ProbeManager *	getProbeManager ()
	Get the probe manager for this object.

virtual Port &	getPort (const std::string &if_name, PortID idx=InvalidPortID)
	Get a port with a given name and index.

virtual void	startup ()
	startup() is the final initialization call before simulation.

DrainState	drain () override
	Provide a default implementation of the drain interface for objects that don't need draining.

virtual void	memWriteback ()
	Write back dirty buffers to memory using functional writes.

virtual void	memInvalidate ()
	Invalidate the contents of memory buffers.

void	serialize (CheckpointOut &cp) const override
	Serialize an object.

void	unserialize (CheckpointIn &cp) override
	Unserialize an object.

Public Member Functions inherited from gem5::EventManager
EventQueue *	eventQueue () const

void	schedule (Event &event, Tick when)

void	deschedule (Event &event)

void	reschedule (Event &event, Tick when, bool always=false)

void	schedule (Event *event, Tick when)

void	deschedule (Event *event)

void	reschedule (Event *event, Tick when, bool always=false)

void	wakeupEventQueue (Tick when=(Tick) -1)
	This function is not needed by the usual gem5 event loop but may be necessary in derived EventQueues which host gem5 on other schedulers.

void	setCurTick (Tick newVal)

	EventManager (EventManager &em)
	Event manger manages events in the event queue.

	EventManager (EventManager *em)

	EventManager (EventQueue *eq)

Public Member Functions inherited from gem5::Serializable
	Serializable ()

virtual	~Serializable ()

virtual void	serialize (CheckpointOut &cp) const =0
	Serialize an object.

virtual void	unserialize (CheckpointIn &cp)=0
	Unserialize an object.

void	serializeSection (CheckpointOut &cp, const char *name) const
	Serialize an object into a new section.

void	serializeSection (CheckpointOut &cp, const std::string &name) const

void	unserializeSection (CheckpointIn &cp, const char *name)
	Unserialize an a child object.

void	unserializeSection (CheckpointIn &cp, const std::string &name)

Public Member Functions inherited from gem5::Drainable
DrainState	drainState () const
	Return the current drain state of an object.

virtual void	notifyFork ()
	Notify a child process of a fork.

Public Member Functions inherited from gem5::statistics::Group
	Group (Group parent, const char name=nullptr)
	Construct a new statistics group.

virtual	~Group ()

virtual void	regStats ()
	Callback to set stat parameters.

virtual void	resetStats ()
	Callback to reset stats.

virtual void	preDumpStats ()
	Callback before stats are dumped.

void	addStat (statistics::Info *info)
	Register a stat with this group.

const std::map< std::string, Group * > &	getStatGroups () const
	Get all child groups associated with this object.

const std::vector< Info * > &	getStats () const
	Get all stats associated with this object.

void	addStatGroup (const char name, Group block)
	Add a stat block as a child of this block.

const Info *	resolveStat (std::string name) const
	Resolve a stat by its name within this group.

void	mergeStatGroup (Group *block)
	Merge the contents (stats & children) of a block to this block.

	Group (const Group &)=delete

Group &	operator= (const Group &)=delete

Public Member Functions inherited from gem5::Named
	Named (const std::string &name_)

virtual	~Named ()=default

virtual std::string	name () const

Protected Attributes
IdeController *	ctrl = nullptr
	The IDE controller for this disk.

IdeController::Channel *	channel = nullptr
	The channel this disk is connected to.

DiskImage *	image
	The image that contains the data of this disk.

int	diskDelay
	The disk delay in microseconds.

Protected Attributes inherited from gem5::SimObject
const SimObjectParams &	_params
	Cached copy of the object parameters.

Protected Attributes inherited from gem5::EventManager
EventQueue *	eventq
	A pointer to this object's event queue.

Private Member Functions
void	startCommand ()

void	postInterrupt ()

void	clearInterrupt ()

void	doDmaTransfer ()

void	doDmaDataRead ()

void	doDmaRead ()

void	doDmaDataWrite ()

void	doDmaWrite ()

void	dmaPrdReadDone ()

void	dmaReadDone ()

void	dmaWriteDone ()

void	readDisk (uint32_t sector, uint8_t *data)

void	writeDisk (uint32_t sector, uint8_t *data)

void	updateState (DevAction_t action)

bool	isBSYSet ()

bool	isIENSet ()

bool	isDEVSelect ()

void	setComplete ()

uint32_t	getLBABase ()

Addr	pciToDma (Addr pciAddr)

void	serialize (CheckpointOut &cp) const override
	Serialize an object.

void	unserialize (CheckpointIn &cp) override
	Unserialize an object.

Private Attributes
struct ataparams	driveID
	Drive identification structure for this disk.

uint8_t *	dataBuffer
	Data buffer for transfers.

uint32_t	cmdBytes
	Number of bytes in command data transfer.

uint32_t	cmdBytesLeft
	Number of bytes left in command data transfer.

uint32_t	drqBytesLeft
	Number of bytes left in DRQ block.

uint32_t	curSector
	Current sector in access.

CommandReg_t	cmdReg
	Command block registers.

uint8_t	status
	Status register.

bool	nIENBit
	Interrupt enable bit.

DevState_t	devState
	Device state.

DmaState_t	dmaState
	Dma state.

bool	dmaRead
	Dma transaction is a read.

Addr	chunkBytes
	Size of chunks to DMA.

uint32_t	curPrdAddr
	PRD table base address.

PrdTableEntry	curPrd
	PRD entry.

int	devID
	Device ID (device0=0/device1=1)

bool	pendingInterrupt
	Interrupt pending.

bool	dmaAborted
	DMA Aborted.

gem5::IdeDisk::IdeDiskStats	ideDiskStats

EventFunctionWrapper	dmaTransferEvent

ChunkGenerator *	dmaReadCG = nullptr

EventFunctionWrapper	dmaReadWaitEvent

ChunkGenerator *	dmaWriteCG = nullptr

EventFunctionWrapper	dmaWriteWaitEvent

EventFunctionWrapper	dmaPrdReadEvent

EventFunctionWrapper	dmaReadEvent

EventFunctionWrapper	dmaWriteEvent

Additional Inherited Members
Static Public Member Functions inherited from gem5::SimObject
static void	serializeAll (const std::string &cpt_dir)
	Create a checkpoint by serializing all SimObjects in the system.

static SimObject *	find (const char *name)
	Find the SimObject with the given name and return a pointer to it.

static void	setSimObjectResolver (SimObjectResolver *resolver)
	There is a single object name resolver, and it is only set when simulation is restoring from checkpoints.

static SimObjectResolver *	getSimObjectResolver ()
	There is a single object name resolver, and it is only set when simulation is restoring from checkpoints.

Static Public Member Functions inherited from gem5::Serializable
static const std::string &	currentSection ()
	Gets the fully-qualified name of the active section.

static void	generateCheckpointOut (const std::string &cpt_dir, std::ofstream &outstream)
	Generate a checkpoint file so that the serialization can be routed to it.

Protected Member Functions inherited from gem5::Drainable
	Drainable ()

virtual	~Drainable ()

virtual DrainState	drain ()=0
	Draining is the process of clearing out the states of SimObjects.These are the SimObjects that are partially executed or are partially in flight.

virtual void	drainResume ()
	Resume execution after a successful drain.

void	signalDrainDone () const
	Signal that an object is drained.

Detailed Description

IDE Disk device model.

Definition at line 216 of file ide_disk.hh.

Member Typedef Documentation

◆ Params

typedef IdeDiskParams gem5::IdeDisk::Params

Definition at line 281 of file ide_disk.hh.

Constructor & Destructor Documentation

◆ IdeDisk()

gem5::IdeDisk::IdeDisk ( const Params & p )

Definition at line 66 of file ide_disk.cc.

References doDmaTransfer().

◆ ~IdeDisk()

gem5::IdeDisk::~IdeDisk ( )

Delete the data buffer.

Definition at line 138 of file ide_disk.cc.

References dataBuffer.

Member Function Documentation

◆ abortDma()

void gem5::IdeDisk::abortDma ( )

Definition at line 599 of file ide_disk.cc.

References gem5::ACT_CMD_ERROR, devState, gem5::Dma_Idle, dmaState, panic_if, gem5::Prepare_Data_Dma, gem5::Transfer_Data_Dma, and updateState().

◆ clearInterrupt()

void gem5::IdeDisk::clearInterrupt ( )

private

Definition at line 752 of file ide_disk.cc.

References channel, gem5::IdeController::Channel::clearInterrupt(), DPRINTF, panic_if, and pendingInterrupt.

Referenced by updateState().

◆ dmaPrdReadDone()

void gem5::IdeDisk::dmaPrdReadDone ( )

private

Definition at line 357 of file ide_disk.cc.

References gem5::ACT_CMD_ERROR, cmdBytesLeft, curPrd, curPrdAddr, curSector, dmaAborted, dmaRead, doDmaDataRead(), doDmaDataWrite(), DPRINTF, gem5::PrdTableEntry::getBaseAddr(), gem5::PrdTableEntry::getByteCount(), gem5::PrdTableEntry::getEOT(), pciToDma(), SectorSize, and updateState().

◆ dmaReadDone()

void gem5::IdeDisk::dmaReadDone ( )

private

Definition at line 450 of file ide_disk.cc.

References gem5::ACT_DMA_DONE, cmdBytesLeft, curPrd, curSector, dataBuffer, gem5::Dma_Idle, dmaState, doDmaTransfer(), gem5::PrdTableEntry::getByteCount(), gem5::PrdTableEntry::getEOT(), SectorSize, updateState(), and writeDisk().

Referenced by doDmaRead().

◆ dmaWriteDone()

void gem5::IdeDisk::dmaWriteDone ( )

private

Definition at line 537 of file ide_disk.cc.

References gem5::ACT_DMA_DONE, cmdBytesLeft, curPrd, gem5::Dma_Idle, dmaState, doDmaTransfer(), DPRINTF, gem5::PrdTableEntry::getByteCount(), gem5::PrdTableEntry::getEOT(), and updateState().

Referenced by doDmaWrite().

◆ doDmaDataRead()

void gem5::IdeDisk::doDmaDataRead ( )

private

Todo:: we need to figure out what the delay actually will be

Definition at line 381 of file ide_disk.cc.

References curPrd, gem5::curTick(), diskDelay, dmaReadWaitEvent, DPRINTF, gem5::PrdTableEntry::getByteCount(), gem5::EventManager::schedule(), and SectorSize.

Referenced by dmaPrdReadDone().

◆ doDmaDataWrite()

void gem5::IdeDisk::doDmaDataWrite ( )

private

Todo:: we need to figure out what the delay actually will be

Definition at line 473 of file ide_disk.cc.

References cmdBytesLeft, curPrd, curSector, gem5::curTick(), dataBuffer, diskDelay, dmaWriteWaitEvent, DPRINTF, gem5::PrdTableEntry::getByteCount(), MAX_DMA_SIZE, readDisk(), gem5::EventManager::schedule(), and SectorSize.

Referenced by dmaPrdReadDone().

◆ doDmaRead()

void gem5::IdeDisk::doDmaRead ( )

private

◆ doDmaTransfer()

void gem5::IdeDisk::doDmaTransfer ( )

private

Definition at line 334 of file ide_disk.cc.

References gem5::ACT_CMD_ERROR, ctrl, curPrd, curPrdAddr, gem5::curTick(), devState, DMA_BACKOFF_PERIOD, gem5::Dma_Transfer, dmaAborted, gem5::DmaDevice::dmaPending(), dmaPrdReadEvent, gem5::DmaDevice::dmaRead(), dmaState, dmaTransferEvent, DPRINTF, gem5::Drainable::drainState(), gem5::PrdTableEntry::entry, panic, gem5::Running, gem5::EventManager::schedule(), gem5::Transfer_Data_Dma, and updateState().

Referenced by dmaReadDone(), dmaWriteDone(), and IdeDisk().

◆ doDmaWrite()

void gem5::IdeDisk::doDmaWrite ( )

private

◆ getLBABase()

uint32_t gem5::IdeDisk::getLBABase ( )

inlineprivate

Definition at line 373 of file ide_disk.hh.

References cmdReg, gem5::CommandReg_t::cyl_high, gem5::CommandReg_t::cyl_low, gem5::CommandReg_t::head, and gem5::CommandReg_t::sec_num.

Referenced by startCommand().

◆ isBSYSet()

bool gem5::IdeDisk::isBSYSet ( )

inlineprivate

Definition at line 357 of file ide_disk.hh.

References status, and STATUS_BSY_BIT.

◆ isDEVSelect()

bool gem5::IdeDisk::isDEVSelect ( )

private

Definition at line 189 of file ide_disk.cc.

References channel, and gem5::IdeController::Channel::selected().

Referenced by updateState().

◆ isIENSet()

bool gem5::IdeDisk::isIENSet ( )

inlineprivate

Definition at line 358 of file ide_disk.hh.

References nIENBit.

Referenced by updateState().

◆ pciToDma()

Addr gem5::IdeDisk::pciToDma ( Addr pciAddr )

inlineprivate

Definition at line 195 of file ide_disk.cc.

References ctrl, panic_if, and gem5::PciDevice::pciToDma().

Referenced by dmaPrdReadDone(), doDmaRead(), doDmaWrite(), and startDma().

◆ postInterrupt()

void gem5::IdeDisk::postInterrupt ( )

private

Definition at line 739 of file ide_disk.cc.

References channel, DPRINTF, panic_if, pendingInterrupt, and gem5::IdeController::Channel::postInterrupt().

Referenced by updateState().

◆ readCommand()

void gem5::IdeDisk::readCommand	(	const Addr	offset,
		int	size,
		uint8_t *	data
	)

◆ readControl()

void gem5::IdeDisk::readControl	(	const Addr	offset,
		int	size,
		uint8_t *	data
	)

Definition at line 252 of file ide_disk.cc.

References ALTSTAT_OFFSET, data, DPRINTF, gem5::ArmISA::offset, panic, and status.

◆ readDisk()

void gem5::IdeDisk::readDisk	(	uint32_t	sector,
		uint8_t *	data
	)

private

Definition at line 557 of file ide_disk.cc.

References data, image, gem5::Named::name(), panic_if, gem5::DiskImage::read(), and SectorSize.

Referenced by doDmaDataWrite(), and updateState().

◆ reset()

void gem5::IdeDisk::reset ( int id )

Reset the device state.

Definition at line 145 of file ide_disk.cc.

References cmdBytes, cmdBytesLeft, cmdReg, curPrd, curPrdAddr, curSector, dataBuffer, DEV0, DEV1, gem5::Device_Idle_NS, gem5::Device_Idle_S, devID, devState, gem5::Dma_Idle, dmaAborted, dmaRead, dmaState, drqBytesLeft, gem5::PrdTableEntry::entry, gem5::CommandReg_t::error, MAX_DMA_SIZE, panic, pendingInterrupt, status, and STATUS_DRDY_BIT.

◆ serialize()

void gem5::IdeDisk::serialize ( CheckpointOut & cp ) const

overrideprivatevirtual

Serialize an object.

Output an object's state into the current checkpoint section.

Parameters

cp	Checkpoint state

Todo:: need to serialized chunk generator stuff!!

Implements gem5::Serializable.

Definition at line 1068 of file ide_disk.cc.

References gem5::PrdEntry_t::baseAddr, gem5::PrdEntry_t::byteCount, cmdBytes, cmdBytesLeft, cmdReg, gem5::CommandReg_t::command, curPrd, curPrdAddr, curSector, gem5::CommandReg_t::cyl_high, gem5::CommandReg_t::cyl_low, gem5::CommandReg_t::data, dataBuffer, devID, devState, dmaAborted, dmaPrdReadEvent, gem5::DmaRead, dmaRead, dmaReadEvent, dmaReadWaitEvent, dmaState, dmaTransferEvent, gem5::DmaWrite, dmaWriteEvent, dmaWriteWaitEvent, gem5::CommandReg_t::drive, drqBytesLeft, gem5::PrdEntry_t::endOfTable, gem5::PrdTableEntry::entry, gem5::MipsISA::event, MAX_DMA_SIZE, nIENBit, gem5::None, gem5::paramOut(), pendingInterrupt, gem5::PrdRead, gem5::ReadWait, gem5::EventManager::reschedule(), gem5::Event::scheduled(), gem5::CommandReg_t::sec_count, gem5::CommandReg_t::sec_num, SERIALIZE_ARRAY, SERIALIZE_ENUM, SERIALIZE_SCALAR, status, gem5::Transfer, gem5::Event::when(), and gem5::WriteWait.

◆ setChannel()

void gem5::IdeDisk::setChannel	(	IdeController::Channel *	_channel,
		Addr	chunk_bytes
	)

inline

Set the controller for this device.

Parameters

c	The IDE controller

Definition at line 299 of file ide_disk.hh.

References channel, chunkBytes, gem5::IdeController::Channel::controller(), ctrl, and panic_if.

◆ setComplete()

void gem5::IdeDisk::setComplete ( )

inlineprivate

Definition at line 362 of file ide_disk.hh.

References status, STATUS_DRDY_BIT, and STATUS_SEEK_BIT.

Referenced by updateState().

◆ startCommand()

void gem5::IdeDisk::startCommand ( )

private

Todo:: make this a scheduled event to simulate disk delay

Definition at line 611 of file ide_disk.cc.

Referenced by updateState().

◆ startDma()

void gem5::IdeDisk::startDma ( const uint32_t & prdTableBase )

Definition at line 581 of file ide_disk.cc.

References curPrdAddr, gem5::curTick(), devState, gem5::Dma_Start, gem5::Dma_Transfer, dmaState, dmaTransferEvent, panic_if, pciToDma(), gem5::EventManager::schedule(), and gem5::Transfer_Data_Dma.

◆ unserialize()

void gem5::IdeDisk::unserialize ( CheckpointIn & cp )

overrideprivatevirtual

Unserialize an object.

Read an object's state from the current checkpoint section.

Parameters

cp	Checkpoint state

Todo:: need to serialized chunk generator stuff!!

Implements gem5::Serializable.

Definition at line 1146 of file ide_disk.cc.

References gem5::PrdEntry_t::baseAddr, gem5::PrdEntry_t::byteCount, cmdBytes, cmdBytesLeft, cmdReg, gem5::CommandReg_t::command, curPrd, curPrdAddr, curSector, gem5::CommandReg_t::cyl_high, gem5::CommandReg_t::cyl_low, gem5::CommandReg_t::data, dataBuffer, devID, devState, dmaAborted, dmaPrdReadEvent, gem5::DmaRead, dmaRead, dmaReadEvent, dmaReadWaitEvent, dmaState, dmaTransferEvent, gem5::DmaWrite, dmaWriteEvent, dmaWriteWaitEvent, gem5::CommandReg_t::drive, drqBytesLeft, gem5::PrdEntry_t::endOfTable, gem5::PrdTableEntry::entry, gem5::MipsISA::event, MAX_DMA_SIZE, nIENBit, gem5::None, gem5::paramIn(), pendingInterrupt, gem5::PrdRead, gem5::ReadWait, gem5::EventManager::reschedule(), gem5::EventManager::schedule(), gem5::CommandReg_t::sec_count, gem5::CommandReg_t::sec_num, status, gem5::Transfer, UNSERIALIZE_ARRAY, UNSERIALIZE_ENUM, UNSERIALIZE_SCALAR, and gem5::WriteWait.

◆ updateState()

void gem5::IdeDisk::updateState ( DevAction_t action )

private

Todo:: change this to a scheduled event to simulate disk delay

Todo:: change this to a scheduled event to simulate disk delay

Definition at line 768 of file ide_disk.cc.

References gem5::ACT_CMD_COMPLETE, gem5::ACT_CMD_ERROR, gem5::ACT_CMD_WRITE, gem5::ACT_DATA_READ_BYTE, gem5::ACT_DATA_READ_SHORT, gem5::ACT_DATA_READY, gem5::ACT_DATA_WRITE_BYTE, gem5::ACT_DATA_WRITE_SHORT, gem5::ACT_DMA_DONE, gem5::ACT_DMA_READY, gem5::ACT_SELECT_WRITE, gem5::ACT_SRST_CLEAR, gem5::ACT_SRST_SET, gem5::ACT_STAT_READ, ATAPI_IDENTIFY_DEVICE, channel, clearInterrupt(), cmdBytes, cmdBytesLeft, cmdReg, gem5::CommandReg_t::command, gem5::Command_Execution, curSector, gem5::CommandReg_t::data, gem5::Data_Ready_INTRQ_In, gem5::Data_Ready_INTRQ_Out, dataBuffer, gem5::Device_Dma_Abort, gem5::Device_Idle_NS, gem5::Device_Idle_S, gem5::Device_Idle_SI, gem5::Device_Srst, devID, devState, gem5::Dma_Idle, gem5::Dma_Start, dmaAborted, dmaState, DPRINTF, driveID, drqBytesLeft, isDEVSelect(), isIENSet(), MAX_DMA_SIZE, panic, pendingInterrupt, postInterrupt(), gem5::Prepare_Data_Dma, gem5::Prepare_Data_In, gem5::Prepare_Data_Out, readDisk(), gem5::statistics::reset(), SectorSize, setComplete(), gem5::IdeController::Channel::setDmaComplete(), startCommand(), status, STATUS_BSY_BIT, STATUS_DRQ_BIT, STATUS_SEEK_BIT, gem5::Transfer_Data_Dma, gem5::Transfer_Data_In, gem5::Transfer_Data_Out, updateState(), WDCC_IDENTIFY, and writeDisk().

Referenced by abortDma(), dmaPrdReadDone(), dmaReadDone(), dmaWriteDone(), doDmaRead(), doDmaTransfer(), doDmaWrite(), readCommand(), startCommand(), updateState(), writeCommand(), and writeControl().

◆ writeCommand()

void gem5::IdeDisk::writeCommand	(	const Addr	offset,
		int	size,
		const uint8_t *	data
	)

◆ writeControl()

void gem5::IdeDisk::writeControl	(	const Addr	offset,
		int	size,
		const uint8_t *	data
	)

Definition at line 310 of file ide_disk.cc.

References gem5::ACT_SRST_CLEAR, gem5::ACT_SRST_SET, CONTROL_IEN_BIT, CONTROL_OFFSET, CONTROL_RST_BIT, data, gem5::Device_Srst, devState, DPRINTF, nIENBit, gem5::ArmISA::offset, panic, and updateState().

◆ writeDisk()

void gem5::IdeDisk::writeDisk	(	uint32_t	sector,
		uint8_t *	data
	)

private

Definition at line 567 of file ide_disk.cc.

References data, image, gem5::Named::name(), panic_if, SectorSize, and gem5::DiskImage::write().

Referenced by dmaReadDone(), and updateState().

Member Data Documentation

◆ channel

IdeController::Channel* gem5::IdeDisk::channel = nullptr

protected

The channel this disk is connected to.

Definition at line 222 of file ide_disk.hh.

Referenced by clearInterrupt(), isDEVSelect(), postInterrupt(), setChannel(), and updateState().

◆ chunkBytes

Addr gem5::IdeDisk::chunkBytes

private

Size of chunks to DMA.

Definition at line 256 of file ide_disk.hh.

Referenced by doDmaRead(), doDmaWrite(), and setChannel().

◆ cmdBytes

uint32_t gem5::IdeDisk::cmdBytes

private

Number of bytes in command data transfer.

Definition at line 236 of file ide_disk.hh.

Referenced by reset(), serialize(), startCommand(), unserialize(), and updateState().

◆ cmdBytesLeft

uint32_t gem5::IdeDisk::cmdBytesLeft

private

Number of bytes left in command data transfer.

Definition at line 238 of file ide_disk.hh.

Referenced by dmaPrdReadDone(), dmaReadDone(), dmaWriteDone(), doDmaDataWrite(), reset(), serialize(), startCommand(), unserialize(), and updateState().

◆ cmdReg

CommandReg_t gem5::IdeDisk::cmdReg

private

Command block registers.

Definition at line 244 of file ide_disk.hh.

Referenced by getLBABase(), readCommand(), reset(), serialize(), startCommand(), unserialize(), updateState(), and writeCommand().

◆ ctrl

IdeController* gem5::IdeDisk::ctrl = nullptr

protected

The IDE controller for this disk.

Definition at line 220 of file ide_disk.hh.

Referenced by doDmaRead(), doDmaTransfer(), doDmaWrite(), pciToDma(), and setChannel().

◆ curPrd

PrdTableEntry gem5::IdeDisk::curPrd

private

PRD entry.

Definition at line 260 of file ide_disk.hh.

Referenced by dmaPrdReadDone(), dmaReadDone(), dmaWriteDone(), doDmaDataRead(), doDmaDataWrite(), doDmaRead(), doDmaTransfer(), doDmaWrite(), reset(), serialize(), and unserialize().

◆ curPrdAddr

uint32_t gem5::IdeDisk::curPrdAddr

private

PRD table base address.

Definition at line 258 of file ide_disk.hh.

Referenced by dmaPrdReadDone(), doDmaTransfer(), reset(), serialize(), startDma(), and unserialize().

◆ curSector

uint32_t gem5::IdeDisk::curSector

private

Current sector in access.

Definition at line 242 of file ide_disk.hh.

Referenced by dmaPrdReadDone(), dmaReadDone(), doDmaDataWrite(), reset(), serialize(), startCommand(), unserialize(), and updateState().

◆ dataBuffer

uint8_t* gem5::IdeDisk::dataBuffer

private

Data buffer for transfers.

Definition at line 234 of file ide_disk.hh.

Referenced by dmaReadDone(), doDmaDataWrite(), doDmaRead(), doDmaWrite(), reset(), serialize(), unserialize(), updateState(), and ~IdeDisk().

◆ devID

int gem5::IdeDisk::devID

private

Device ID (device0=0/device1=1)

Definition at line 262 of file ide_disk.hh.

Referenced by reset(), serialize(), unserialize(), and updateState().

◆ devState

DevState_t gem5::IdeDisk::devState

private

Device state.

Definition at line 250 of file ide_disk.hh.

Referenced by abortDma(), doDmaTransfer(), reset(), serialize(), startCommand(), startDma(), unserialize(), updateState(), and writeControl().

◆ diskDelay

int gem5::IdeDisk::diskDelay

protected

The disk delay in microseconds.

Definition at line 228 of file ide_disk.hh.

Referenced by doDmaDataRead(), and doDmaDataWrite().

◆ dmaAborted

bool gem5::IdeDisk::dmaAborted

private

DMA Aborted.

Definition at line 266 of file ide_disk.hh.

Referenced by dmaPrdReadDone(), doDmaRead(), doDmaTransfer(), doDmaWrite(), reset(), serialize(), unserialize(), and updateState().

◆ dmaPrdReadEvent

EventFunctionWrapper gem5::IdeDisk::dmaPrdReadEvent

private

Definition at line 341 of file ide_disk.hh.

Referenced by doDmaTransfer(), serialize(), and unserialize().

◆ dmaRead

bool gem5::IdeDisk::dmaRead

private

Dma transaction is a read.

Definition at line 254 of file ide_disk.hh.

Referenced by dmaPrdReadDone(), reset(), serialize(), startCommand(), and unserialize().

◆ dmaReadCG

ChunkGenerator* gem5::IdeDisk::dmaReadCG = nullptr

private

Definition at line 331 of file ide_disk.hh.

Referenced by doDmaRead().

◆ dmaReadEvent

EventFunctionWrapper gem5::IdeDisk::dmaReadEvent

private

Definition at line 344 of file ide_disk.hh.

Referenced by serialize(), and unserialize().

◆ dmaReadWaitEvent

EventFunctionWrapper gem5::IdeDisk::dmaReadWaitEvent

private

Definition at line 332 of file ide_disk.hh.

Referenced by doDmaDataRead(), doDmaRead(), serialize(), and unserialize().

◆ dmaState

DmaState_t gem5::IdeDisk::dmaState

private

Dma state.

Definition at line 252 of file ide_disk.hh.

Referenced by abortDma(), dmaReadDone(), dmaWriteDone(), doDmaTransfer(), reset(), serialize(), startDma(), unserialize(), and updateState().

◆ dmaTransferEvent

EventFunctionWrapper gem5::IdeDisk::dmaTransferEvent

private

Definition at line 326 of file ide_disk.hh.

Referenced by doDmaTransfer(), serialize(), startDma(), and unserialize().

◆ dmaWriteCG

ChunkGenerator* gem5::IdeDisk::dmaWriteCG = nullptr

private

Definition at line 337 of file ide_disk.hh.

Referenced by doDmaWrite().

◆ dmaWriteEvent

EventFunctionWrapper gem5::IdeDisk::dmaWriteEvent

private

Definition at line 347 of file ide_disk.hh.

Referenced by serialize(), and unserialize().

◆ dmaWriteWaitEvent

EventFunctionWrapper gem5::IdeDisk::dmaWriteWaitEvent

private

Definition at line 338 of file ide_disk.hh.

Referenced by doDmaDataWrite(), doDmaWrite(), serialize(), and unserialize().

◆ driveID

struct ataparams gem5::IdeDisk::driveID

private

Drive identification structure for this disk.

Definition at line 232 of file ide_disk.hh.

Referenced by updateState().

◆ drqBytesLeft

uint32_t gem5::IdeDisk::drqBytesLeft

private

Number of bytes left in DRQ block.

Definition at line 240 of file ide_disk.hh.

Referenced by reset(), serialize(), unserialize(), and updateState().

◆ ideDiskStats

gem5::IdeDisk::IdeDiskStats gem5::IdeDisk::ideDiskStats

private

Referenced by doDmaRead(), and doDmaWrite().

◆ image

DiskImage* gem5::IdeDisk::image

protected

The image that contains the data of this disk.

Definition at line 224 of file ide_disk.hh.

Referenced by readDisk(), startCommand(), and writeDisk().

◆ nIENBit

bool gem5::IdeDisk::nIENBit

private

Interrupt enable bit.

Definition at line 248 of file ide_disk.hh.

Referenced by isIENSet(), serialize(), unserialize(), and writeControl().

◆ pendingInterrupt

bool gem5::IdeDisk::pendingInterrupt

private

Interrupt pending.

Definition at line 264 of file ide_disk.hh.

Referenced by clearInterrupt(), postInterrupt(), reset(), serialize(), unserialize(), and updateState().

◆ status

uint8_t gem5::IdeDisk::status

private

Status register.

Definition at line 246 of file ide_disk.hh.

Referenced by isBSYSet(), readCommand(), readControl(), reset(), serialize(), setComplete(), startCommand(), unserialize(), and updateState().

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

dev/storage/ide_disk.hh
dev/storage/ide_disk.cc

Classes

Public Types

Public Member Functions

Protected Attributes

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Params

Constructor & Destructor Documentation

◆ IdeDisk()

◆ ~IdeDisk()

Member Function Documentation

◆ abortDma()

◆ clearInterrupt()

◆ dmaPrdReadDone()

◆ dmaReadDone()

◆ dmaWriteDone()

◆ doDmaDataRead()

◆ doDmaDataWrite()

◆ doDmaRead()

◆ doDmaTransfer()

◆ doDmaWrite()

◆ getLBABase()

◆ isBSYSet()

◆ isDEVSelect()

◆ isIENSet()

◆ pciToDma()

◆ postInterrupt()

◆ readCommand()

◆ readControl()

◆ readDisk()

◆ reset()

◆ serialize()

◆ setChannel()

◆ setComplete()

◆ startCommand()

◆ startDma()

◆ unserialize()

◆ updateState()

◆ writeCommand()

◆ writeControl()

◆ writeDisk()

Member Data Documentation

◆ channel

◆ chunkBytes

◆ cmdBytes

◆ cmdBytesLeft

◆ cmdReg

◆ ctrl

◆ curPrd

◆ curPrdAddr

◆ curSector

◆ dataBuffer

◆ devID

◆ devState

◆ diskDelay

◆ dmaAborted

◆ dmaPrdReadEvent

◆ dmaRead

◆ dmaReadCG

◆ dmaReadEvent

◆ dmaReadWaitEvent

◆ dmaState

◆ dmaTransferEvent

◆ dmaWriteCG

◆ dmaWriteEvent

◆ dmaWriteWaitEvent

◆ driveID

◆ drqBytesLeft

◆ ideDiskStats

◆ image

◆ nIENBit

◆ pendingInterrupt

◆ status