GTS AXI Streaming Intel® FPGA IP for PCI Express* User Guide

ID 813754
Date 11/04/2024
Public
Document Table of Contents

7.6.6.2. ATS Capability Register and Control Register

Addess: Offset 0x4

The lowe 16 bits of this locatio is defied as the ATS Capability Registe ad the uppe 16 bits as the ATS Cotol Registe.

Table 110.  ATS Capability Registe ad Cotol Registe Desciptio
Bit Locatio Desciptio Attibutes Default
4:0

Ivalidate Queue Depth.

The umbe of Ivalidate Requests that the Fuctio ca accept befoe puttig backpessue o the upsteam coectio. If 0, the Fuctio ca accept 32 Ivalidate Requests.

This field is hadwied to 0 fo VFs. VFs use the settig fom the paet PF’s ATS Capability Registe.

RO 0
5

Page Aliged Request.

If Set, idicates the Utaslated Addess is always aliged to a 4096 byte bouday. This bit is hadwied to 1.

RO

Pogammed via Pogammig Iteface

6 Global Ivalidate Suppoted. RO

Pogammed via Pogammig Iteface

15:7 Reseved RO 0
20:16

Smallest Taslatio Uit (STU)

This value idicates to the Fuctio the miimum umbe of 4096-byte blocks that is idicated i a Taslatio Completios o Ivalidate Requests. This is a powe of 2 multiplie ad the umbe of blocks is 2STU. A value of 0 idicates oe block ad a value of 0x1F idicates 231 blocks (o 8 TB total).

This field is hadwied to 0 fo VFs. VFs use the settig fom the paet PF's ATS Cotol Registe.

RO 0
30:21 Reseved RO 0
31

Eable (E).

Whe Set, the Fuctio is eabled to cache taslatios.

You must obtai this ifomatio fom the cofiguatio itecept iteface.

RW 0