I/O Kit Fundamentals: ATA and ATAPI

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ATA and ATAPI

The ATA and ATAPI family provides support for ATA controllers, and access to ATA and ATAPI devices on the ATA bus.

Important: The ATA and ATAPI family is still under development. The information in this section is subject to change.

Bundle identifier:

Headers in:

References and specifications:

American National Standards Institute (ANSI)—http://www.ansi.org
National Committee for Information Technology Standards (NCITS)—http://www.ncits.org
Technical Committee 13 (T13)—http://www.t13.org

Class hierarchy:

Device interface:

Although this family does not itself export device interfaces, the “SCSI Architecture Model” family does provide device-interface support for ATAPI devices.

**Table A-2** Clients and providers of the ATA and ATAPI family
	Client of the nub	Provider for the nub
Action	Drives a device that is connected to an ATA bus.	Drives an ATA bus controller.
Example	An ATA hard drive or an ATAPI DVD-ROM drive. The Storage family is the most common family for clients.
Classes	Clients of this family match against an instance of IOATADevice, one of which is created and published by the controller driver for every ATA or ATAPI device that is detected on the bus. They use the services provided by that object to communicate with the physical device on the bus.
Notes	Clients of the ATA family must issue ATA/ATAPI commands encapsulated by an IOATACommand object. This command object encapsulates all the information necessary to encode a single ATA/ATAPI command as well as the results of the command’s execution.	Third-party developers should never need to create a member of the ATA/ATAPI family.

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Last updated: 2007-05-17

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