SataDrive Class Reference

A SATA drive. More...

Inheritance diagram for SataDrive:

Public Member Functions
void	comreset ()
void	receive_fis (unsigned fislen, unsigned *fis)
	Receive a FIS from the controller.
bool	receive (MessageDiskCommit &msg)
	SataDrive (DBus< MessageDisk > &bus_disk, DBus< MessageMemRegion > *bus_memregion, DBus< MessageMem > *bus_mem, unsigned hostdisk, DiskParameter params)
Public Member Functions inherited from FisReceiver
	FisReceiver ()
void	set_peer (FisReceiver *peer)
Public Member Functions inherited from StaticReceiver< SataDrive >
	StaticReceiver ()
Public Member Functions inherited from Device
void	debug_dump ()
	Device (const char *debug_name)

Private Member Functions
void	complete_command ()
	A command is completed.
void	send_pio_setup_fis (unsigned short length, bool irq=false)
void	send_dma_setup_fis (bool direction)
void	build_identify_buffer (unsigned short *identify)
	We build the identify response in a buffer to allow to use push_data.
unsigned	push_data (unsigned length, void *data, bool &irq)
	Push data to the user by doing DMA via the PRDs.
unsigned	readwrite_sectors (bool read, bool lba48_ext)
	Read or write sectors from/to disk.
void	execute_command ()
	Execute ATA commands.

Private Attributes
DBus< MessageDisk > &	_bus_disk
unsigned	_hostdisk
unsigned char	_multiple
unsigned	_regs [4]
unsigned char	_ctrl
unsigned char	_status
unsigned char	_error
unsigned	_dsf [7]
unsigned	_splits [32]
DiskParameter	_params
DmaDescriptor	_dma [DMA_DESCRIPTORS]

Static Private Attributes
static unsigned const	DMA_DESCRIPTORS = 64

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

Detailed Description

A SATA drive.

It contains the register set of a SATA drive and speaks the SATA transport layer protocol with its FISes.

State: unstable Features: read,write,identify Missing: better error handling, many commands

Constructor & Destructor Documentation

SataDrive::SataDrive ( DBus< MessageDisk > &  bus_disk, DBus< MessageMemRegion > *  bus_memregion, DBus< MessageMem > *  bus_mem, unsigned  hostdisk, DiskParameter  params  )

inline

Member Function Documentation

void SataDrive::build_identify_buffer ( unsigned short *  identify )

inlineprivate

We build the identify response in a buffer to allow to use push_data.

void SataDrive::complete_command ( )

inlineprivate

A command is completed.

We send a register d2h FIS to the host.

void SataDrive::comreset ( )

inline

void SataDrive::execute_command ( )

inlineprivate

Execute ATA commands.

unsigned SataDrive::push_data ( unsigned  length, void *  data, bool &  irq  )

inlineprivate

Push data to the user by doing DMA via the PRDs.

Return the number of byte written.

unsigned SataDrive::readwrite_sectors ( bool  read, bool  lba48_ext  )

inlineprivate

Read or write sectors from/to disk.

The new entries do not fit into DMA_DESCRIPTORS, do a single sector transfer This means we have to do a read in our own buffer and than copy them out

bool SataDrive::receive ( MessageDiskCommit &  msg )

inline

void SataDrive::receive_fis ( unsigned  fislen, unsigned *  fis  )

inlinevirtual

Receive a FIS from the controller.

Implements FisReceiver.

void SataDrive::send_dma_setup_fis ( bool  direction )

inlineprivate

void SataDrive::send_pio_setup_fis ( unsigned short  length, bool  irq = false  )

inlineprivate

Member Data Documentation

DBus<MessageDisk>& SataDrive::_bus_disk

private

unsigned char SataDrive::_ctrl

private

DmaDescriptor SataDrive::_dma[DMA_DESCRIPTORS]

private

unsigned SataDrive::_dsf[7]

private

unsigned char SataDrive::_error

private

unsigned SataDrive::_hostdisk

private

unsigned char SataDrive::_multiple

private

DiskParameter SataDrive::_params

private

unsigned SataDrive::_regs[4]

private

unsigned SataDrive::_splits[32]

private

unsigned char SataDrive::_status

private

unsigned const SataDrive::DMA_DESCRIPTORS = 64

staticprivate

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

• vancouver/model/satadrive.cc