Intel EP80579 Benutzerhandbuch

Intel

®

 EP80579 Software for Security Applications on Intel

®

 QuickAssist Technology

PG

August 2009

16

Order Number: 320183-004US

The software components at this layer in the current release are as follows:

• Lookaside Crypto Access Layer: This component implements the Cryptographic API 

(shown as LAC API in 

). It manages the exchange of data and messages 

between the Cryptographic API and the SSU driver firmware running on the ASU. 

See 

• QAT Access Layer: This component implements the configuration and control of the 

SSU driver firmware running on the ASU. It also provides an interface for the 

Lookaside Crypto Access Layer to communicate with the SSU driver firmware. See 

 for more details. 

• Debug Infrastructure: This component provides access to data which can be used 

to help debug an application running on EP80579 with QuickAssist. It allows 

version information to be queried, “liveness” of components to be polled, data 

dumps to be generated which can be analyzed offline, and other debug-related 

features. See 

 for more 

details. 
Note: The Data Dump feature is not supported in the current software release.

Most of the layers above also provide APIs. These are described in more detail in the 

chapters which comprise 

. 

This layer consists of the following components:

• The Hardware Services Layer (HSL) component manages the low-level hardware 

blocks required for communication with the ASU. This also provides an interface for 

exchanging messages with the ASU via rings.

• The Operating System Abstraction Layer (OSAL) component provides OS-specific 

services. It is used by many of the components to remove their dependency on a 

particular OS and allow for easier porting to new OSes.

The ASD is a system device driver which is responsible for loading firmware and 

configuring all the components that comprise the EP80579 security software. It 

initializes the Cryptographic API Library, providing it with all necessary information 

about the enumeration of the Acceleration Services Unit and any Access library specific