CDisk Class Reference

#include <Disk.h>

Inheritance diagram for CDisk:

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Collaboration diagram for CDisk:

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Detailed Description

Abstract base class for disks (connects to a CDiskController).

Definition at line 92 of file Disk.h.


Public Member Functions
	CDisk (CConfigurator cfg, CSystem sys, CDiskController *c, int idebus, int idedev)
	Constructor.
virtual	~CDisk (void)
	Destructor.
virtual int	SaveState (FILE *f)
	Save state to a Virtual Machine State file.
virtual int	RestoreState (FILE *f)
	Restore state from a Virtual Machine State file.
virtual void	scsi_select_me (int bus)
	Called when this device is selected.
virtual size_t	scsi_expected_xfer_me (int bus)
	Return the number of bytes expected or available.
virtual void *	scsi_xfer_ptr_me (int bus, size_t bytes)
	Return a pointer where the initiator can read or write data.
virtual void	scsi_xfer_done_me (int bus)
	Process data written or read.
void	set_atapi_mode ()
int	do_scsi_command ()
	Handle a SCSI command.
int	do_scsi_message ()
	Handle a (series of) SCSI message(s).
void	do_scsi_error (int errcode)
virtual bool	seek_byte (off_t_large byte)=0
virtual size_t	read_bytes (void *dest, size_t bytes)=0
virtual size_t	write_bytes (void *src, size_t bytes)=0
bool	seek_block (off_t_large lba)
size_t	read_blocks (void *dest, size_t blocks)
size_t	write_blocks (void *src, size_t blocks)
size_t	get_block_size ()
void	set_block_size (size_t bs)
void	determine_layout ()
off_t_large	get_lba_size ()
off_t_large	get_byte_size ()
off_t_large	get_chs_size ()
off_t_large	get_cylinders ()
long	get_heads ()
long	get_sectors ()
char *	get_serial ()
char *	get_model ()
char *	get_rev ()
bool	ro ()
bool	rw ()
bool	cdrom ()
void	calc_cylinders ()
	the number of cylinders to report.
Protected Attributes
CConfigurator *	myCfg
CDiskController *	myCtrl
int	myBus
int	myDev
char *	serial_number
char *	model_number
char *	revision_number
bool	read_only
bool	is_cdrom
off_t_large	byte_size
off_t_large	cylinders
long	heads
long	sectors
bool	atapi_mode
struct CDisk::SDisk_state	state
Data Structures
struct	SDisk_state
	The state structure contains all elements that need to be saved to the statefile. More...

Constructor & Destructor Documentation

CDisk::CDisk	(	CConfigurator *	cfg,
		CSystem *	sys,
		CDiskController *	c,
		int	idebus,
		int	idedev
	)

CDisk::~CDisk ( void ) [virtual]

Destructor.

Definition at line 168 of file Disk.cpp.

References CSystemComponent::devid_string.

Member Function Documentation

int CDisk::SaveState ( FILE * f ) [virtual]

Save state to a Virtual Machine State file.

Implements CSystemComponent.

Definition at line 220 of file Disk.cpp.

References CSystemComponent::devid_string, disk_magic1, disk_magic2, and state.

int CDisk::RestoreState ( FILE * f ) [virtual]

Restore state from a Virtual Machine State file.

Implements CSystemComponent.

Definition at line 235 of file Disk.cpp.

References determine_layout(), CSystemComponent::devid_string, disk_magic1, disk_magic2, and state.

void CDisk::scsi_select_me ( int bus ) [virtual]

Called when this device is selected.

Set status fields up to begin a new SCSI command sequence and set the SCSI bus phase to Message Out.

Reimplemented from CSCSIDevice.

Definition at line 191 of file Disk.cpp.

size_t CDisk::scsi_expected_xfer_me ( int bus ) [virtual]

Return the number of bytes expected or available.

Return the number of bytes we still expect to receive from the initiator, or still have available for the initiator, in the current SCSI phase.

For an overview of data transfer during a SCSI bus phase, see SCSIDevice::scsi_xfer_ptr.

Reimplemented from CSCSIDevice.

Definition at line 305 of file Disk.cpp.

void * CDisk::scsi_xfer_ptr_me	(	int	bus,
		size_t	bytes
	)			`[virtual]`

Return a pointer where the initiator can read or write data.

Return a pointer to where the initiator can read or write (the remainder of) our data in the current SCSI phase.

For an overview of data transfer during a SCSI bus phase, see SCSIDevice::scsi_xfer_ptr.

Reimplemented from CSCSIDevice.

Definition at line 342 of file Disk.cpp.

void CDisk::scsi_xfer_done_me ( int bus ) [virtual]

Process data written or read.

Determine what action (if any) should be taken after a transfer, and what the next SCSI bus phase should be.

For an overview of data transfer during a SCSI bus phase, see SCSIDevice::scsi_xfer_ptr.

Todo:: Handle disconnect/reconnect properly.

Reimplemented from CSCSIDevice.

Definition at line 422 of file Disk.cpp.

void CDisk::set_atapi_mode ( ) [inline]

Definition at line 106 of file Disk.h.

References atapi_mode.

Referenced by CAliM1543C_ide::register_disk().

int CDisk::do_scsi_command ( )

Handle a SCSI command.

Called when a SCSI command has been received. We parse the command, and set up the state for the data in or data out phases.

If a data out phase is required, we return the value 2 to indicate this. In that case, do_scsi_command will be called again once the data out has been received from the initiator.

Definition at line 715 of file Disk.cpp.