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IOFWPhysicalAddressSpace

Inherits from:	IOFWAddressSpace
Declared In:	IOFWPhysicalAddressSpace.h

Overview

Use the links in the table of contents to the left to access the documentation.

Functions

checkMemoryInRange: Validates the IOMemoryDescriptor, which is used to initialize the PhysicalAddressSpace.
complete: complete the IODMACommand used by this PhysicalAddressSpace.
doRead: A method for processing an address space read request
doWrite: A method for processing an address space write request
getDMACommand: Get the DMACommand from this PhysicalAddressSpace.
getLength: Get the length of the memory backed by PhysicalAddressSpace.
getMemoryDescriptor: Gets the memory descriptor, which is associated to this PhysicalAddressSpace.
getSegments: Returns the scatter gather list of memory segments from the IODMACommand used in this PhysicalAddressSpace.
init: Initialize physical address space.
initWithDesc: Initialize physical address space with IOMemoryDescriptor.
initWithDMACommand: Initialize physical address space with IODMACommand.
isPrepared: Inspects whether the IODMACommand was prepared in this PhysicalAddressSpace.
prepare: Prepare the IODMACommand used by this PhysicalAddressSpace.
setDMACommand: Set the DMACommand for this PhysicalAddressSpace.
setMemoryDescriptor: Sets the memory descriptor, which will be associated to this PhysicalAddressSpace.
synchronize: synchronize the IODMACommand used by this PhysicalAddressSpace.

checkMemoryInRange

Validates the IOMemoryDescriptor, which is used to initialize the PhysicalAddressSpace.

public

IOReturn checkMemoryInRange(
    IOMemoryDescriptor *memory );

Parameters

memory: Points to a valid IOMemoryDescriptor.

Return Value

returns kIOReturnSuccess on success

complete

complete the IODMACommand used by this PhysicalAddressSpace.

public

inline IOReturn complete(
    void ) ;

Parameters

none.

Return Value

returns kIOReturnSuccess on success

doRead

A method for processing an address space read request

public

virtual UInt32 doRead(
    UInt16 nodeID,
    IOFWSpeed &speed,
    FWAddress addr,
    UInt32 len, 
    IOMemoryDescriptor **buf,
    IOByteCount *offset, 
    IOFWRequestRefCon refcon);

Parameters

nodeID: FireWire Read from nodeID.
speed: at this 'speed'.
addr: with FireWire address 'addr'.
len: read 'len' bytes from nodeID.
buf: points to a memory descriptor containing the packet data.
offset: start from this 'offset' in 'buf'.
refcon: Can be queried for extra info about the request.

Return Value

UIn32 returns kFWResponseComplete on success

doWrite

A method for processing an address space write request

public

virtual UInt32 doWrite(
    UInt16 nodeID,
    IOFWSpeed &speed,
    FWAddress addr,
    UInt32 len, 
    const void *buf,
    IOFWRequestRefCon refcon);

Parameters

nodeID: FireWire Write to nodeID.
speed: at this 'speed'.
addr: with FireWire address 'addr'.
len: write 'len' bytes to nodeID.
buf: obtain bytes from location given by 'buf'.
reqrefcon: Can be queried for extra info about the request.

Return Value

UIn32 returns kFWResponseComplete on success

getDMACommand

Get the DMACommand from this PhysicalAddressSpace.

public

inline IODMACommand * getDMACommand(
    void ) ;

Parameters

none.

Return Value

return previously assigned IODMACommand, null if not initialized

getLength

Get the length of the memory backed by PhysicalAddressSpace.

public

UInt64 getLength(
    void );

Parameters

none.

Return Value

returns the length

getMemoryDescriptor

Gets the memory descriptor, which is associated to this PhysicalAddressSpace.

public

IOMemoryDescriptor * getMemoryDescriptor(
    void );

Parameters

none.

Return Value

returns the IOMemoryDescriptor

getSegments

Returns the scatter gather list of memory segments from the IODMACommand used in this PhysicalAddressSpace.

public

inline IOReturn getSegments(
    UInt64 *offset,
    FWSegment *fw_segments,
    UInt32 *num_segments ) ;

Parameters

offset: input/output parameter, defines the starting and ending offset in the memory descriptor, relative to any offset passed to the prepare() method. FWSegment Points to an array of memory segments. num_segments Size of the FWSegment array.

Return Value

returns kIOReturnSuccess on success

init

Initialize physical address space.

public

virtual bool init(
    IOFireWireBus *bus );

Parameters

bus: Points to IOFireWireBus object.

Return Value

returns true if success, else false

initWithDesc

Initialize physical address space with IOMemoryDescriptor.

public

virtual bool initWithDesc(
    IOFireWireBus *bus, 
    IOMemoryDescriptor *mem);

Parameters

bus: Points to IOFireWireBus object.
mem: Points to IOMemoryDescriptor.

Return Value

returns true if success, else false

initWithDMACommand

Initialize physical address space with IODMACommand.

public

virtual bool initWithDMACommand(
    IOFireWireBus *control,
    IODMACommand *command );

Parameters

bus: Points to IOFireWireBus object.
command: Points to IODMACommand.

Return Value

returns true if success, else false

isPrepared

Inspects whether the IODMACommand was prepared in this PhysicalAddressSpace.

public

inline bool isPrepared(
    void ) ;

Parameters

none.

Return Value

returns true if prepared, else false

prepare

Prepare the IODMACommand used by this PhysicalAddressSpace.

public

inline IOReturn prepare(
    void ) ;

Parameters

none.

Return Value

returns kIOReturnSuccess on success

setDMACommand

Set the DMACommand for this PhysicalAddressSpace.

public

inline void setDMACommand(
    IODMACommand *dma_command ) ;

Parameters

dma_command: Points to IODMACommand object.

Return Value

none

setMemoryDescriptor

Sets the memory descriptor, which will be associated to this PhysicalAddressSpace.

public

IOReturn setMemoryDescriptor(
    IOMemoryDescriptor *descriptor );

Parameters

none.

Return Value

returns the IOMemoryDescriptor

synchronize

synchronize the IODMACommand used by this PhysicalAddressSpace.

public

inline IOReturn synchronize(
    IOOptionBits options ) ;

Parameters

none.

Return Value

returns kIOReturnSuccess on success

Last Updated: 2009-10-14