Intel EP80579 Benutzerhandbuch

Intel

®

 EP80579 Software for Security Applications on Intel

®

 QuickAssist Technology

August 2009

PG

Order Number: 320183

35

• No updates in this release.

This section describes the hardware-related services that the Acceleration System 

Driver (ASD) kernel module supplies to other modules. 

The Acceleration System Driver controls the initialization and shutdown of other 

components that make up the Security Software Subsystem. Those components are:

• Hardware Access Layer (HAL)
• Debug Common Component (DCC)
• QAT Access Layer (QAT-AL)
• Lookaside Crypto Layer (LAC)

The initialization of the sub-components consists of a two stage process. Each sub-

component provides an “init” function and a “start” function. The init function allocates 

resources required by the sub-component. The start function is provided that 

completes the initialization and finally enables the sub-component. ASD first invokes all 

sub-component init functions and then all the start functions. The ASD invokes them in 

the following order: HAL, DCC, QAT-AL, LAC.

The shutdown of the sub-components is the converse of the initialization mechanism 

and follows a similar two stage process. Each sub-component provides a “stop” 

function and a “shutdown” function. The stop function disables the sub-component. The 

shutdown function deallocates resources used by the sub-component.

This section describes the hardware-related services provided by ASD:

•

•

ASD registers an interrupt service routine with the Host OS, which enables:

• QAT-AL interrupt handler to process interrupts raised on rings 0-31

To enable ASD to provide these capabilities, the primitives listed in 

 are used: