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

ID 813754
Date 5/15/2024
Public
Document Table of Contents

7.2. PCI Express* Configuration Space

In addition to accessing the Endpoint's configuration space registers by sending Configuration Read/Write TLPs, the AXI-Lite CSR interface also provides read/write access to these registers.

The PCIe* Configuration Space Registers table describes the registers for each PF. To calculate the address for a particular register in a particular PF, add the offset for that PF from the Configuration Space Offsets table to the byte address for that register as given in the PCIe* Configuration Space Registers table.

Table 54.   PCIe* Configuration Space Registers
Byte Address Configuration Space Register Corresponding Section in PCIe* Specification
0x000 : 0x03C PCI* Header Type 0/1 Configuration Registers Type 0/1 Configuration Space Header
0x040 : 0x044 Power Management PCI* Power Management Capability Structure
0x050 : 0x064 MSI Capability MSI Capability Structure, see also PCI* Local Bus Specification
0x070 : 0x0A0 PCI* Express Capability PCI Express* Capability Structure
0x0B0 : 0x0B8 MSI-X Capability MSI-X Capability Structure, see also PCI* Local Bus Specification
0x0BC : 0x0FC Reserved N/A
0x100 : 0x144 Advanced Error Reporting (AER) Advanced Error Reporting Capability Structure
0x148 : 0x160 Virtual Channel Capability Virtual Channel Capability Structure
0x164 : 0x16C Device Serial Number Capability Device Serial Number Capability Structure
0x174 : 0x178 Alternative Routing-ID Implementation (ARI) ARI Capability Structure
0x184 : 0x194 Secondary PCI Express* Extended Capability Header PCI Express* Extended Capability
0x1A4 : 0x1C4

Physical Layer 16.0 GT/s

Extended Capability

Physical Layer 16.0 GT/s

Extended Capability Structure

0x1C8 : 0x1DC Margining Extended Capability Margining Extended Capability Structure
0x1E0 : 0x21C SR-IOV Capability SR-IOV Capability Structure
0x220 : 0x228 TLP Processing Hints (TPH) Capability TLP Processing Hints (TPH) Capability Structure
0x2AC : 0x2B0 Address Translation Services (ATS) Capability Address Translation Services Extended Capability (ATS) in Single Root I/O Virtualization and Sharing Specification
0x2BC : 0x2C4 Access Control Services (ACS) Capability Access Control Services (ACS) Capability
0x2C8 : 0x2D4 Page Request Services (PRS) Capability Page Request Services (PRS) Capability
0x2D8 : 0x2DC Latency Tolerance Reporting (LTR) Capability Latency Tolerance Reporting (LTR) Capability
0x2E0 : 0x2E4 Process Address Space (PASID) Capability Process Address Space (PASID) Capability Structure
0x2E8 : 0x3D0 RAS D.E.S. Capability (VSEC)
0x42C : 0x434 Precision Time Management (PTM) Capability Precision Time Management (PTM) Capability
0x438 : 0x49C PTM Requestor Capability Structure (VSEC)
0x420 : 0x428 Data Link Feature Extended Capability Data Link Feature Extended Capability
0xD00 : 0xD58 Intel-defined VSEC