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IOBDBlockStorageDevice

Overview

The IOBDBlockStorageDevice class is a generic BD block storage device abstraction.

Discussion

This class is the protocol for generic BD functionality, independent of the physical connection protocol (e.g. SCSI, ATA, USB).

The APIs are the union of CD APIs, DVD APIs, and all necessary new low-level BD APIs.

A subclass implements relay methods that translate our requests into calls to a protocol- and device-specific provider.

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Functions

init

readDiscStructure

splitTrack

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init

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public

virtual bool init(
    OSDictionary *properties); 

Parameters

properties

Substitute property table for this object (optional).

Return Value

Returns true on success, false otherwise.

Discussion

Initialize this object's minimal state.

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readDiscStructure

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public

virtual IOReturn readDiscStructure(
    IOMemoryDescriptor *buffer, 
    UInt8 format, 
    UInt32 address, 
    UInt8 layer, 
    UInt8 grantID, 
    UInt8 type ) = 0; 

Parameters

buffer

Buffer for the data transfer. The size of the buffer implies the size of the data transfer.

format

As documented by MMC.

address

As documented by MMC.

layer

As documented by MMC.

grantID

As documented by MMC.

type

As documented by MMC.

Return Value

Returns the status of the data transfer.

Discussion

Issue an MMC READ DISC STRUCTURE command.

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splitTrack

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public

virtual IOReturn splitTrack(
    UInt32 address) = 0; 

Parameters

address

As documented by MMC.

Return Value

Returns the status of the operation.

Discussion

Issue an MMC RESERVE TRACK command with the ARSV bit.

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Last Updated: 2008-12-19