【博文连载】PCIe扫盲——PCIe配置空间寄存器快速定位表

注:这个表格是基于PCIe Spec V2.0的,也就是Gen2的Spec正式版。其中有很多空白的地方,只是在Gen2中没有明确定义,但是在Gen3/Gen4可能会被用到的。具体以Spec为准,

Code Name

Structure Name

Description

Location (Spec V2.0)

Header

N/A

Type 0 Header

First 64 bytes of non-bridge function

p432

N/A

Type 1 Header

First 64 bytes of bridge function

P434

PCI Capability Structures (CAP)

CAP01

Power Management Capability Structure

Power management related regs

P438

CAP02

AGP Capability Structure

CAP03

Vital Product Data Capability Structure

CAP04

Slot Numbering Capability Structure

CAP05

MSI Capability Structure

CAP06

CAP07

PCI-X Capability Structure

CAP08

Hyper Transport Capability Structure

CAP09

Vendor Specific Capability Structure

CAP0A

CAP0B

CAP0C

CAP0D

PCI Bridge Subsystem Vendor ID

CAP0E

CAP0F

CAP10

PCI Express Capability Structure

Access to all PCIe capability and   control regs

p440

CAP11

MSI-X Capability Structure

CAP12

SATA Data/Index Configuration

CAP13

Advanced Features Capability Structure

CAP14

Enhanced Allocation Capability Structure

CAP15

Flattening Portal Bridge Capability   Stru.

PCI Express Extended Capability   Structures (ECAP)

0000

Null Capability Structure

Next capability offset

0001

AER Capability Structure

Advanced Error Reporting

p495

0002

Virtual Channel Capability Structure

Virtual Channel & Traffic Class   related regs

p510

0003

Device Serial Number Capability Stru.

Provides a globally unique ID for this   device

p525

0004

0005

RC Link Declaration Capability   Structure

Declare a RC’s internal topology

p527

0006

RC Internal Link Control Capability   Stru.

Status and control regs for RC’s   internal link

p535

0007

RC Event Collector Endpoint Association

p551

0008

Multi-Function VC Capability Structure

MFVC related regs

p552

0009

000A

RC Registers Block Header

RCRB related regs

p568

000B

Vendor-Specific Capability Structure

Holds vendor-defined information

p565

000C

000D

Access Control Services Capability   Stru.

ACS related regs

p545

000E

000F

0010

0011

0012

0013

0014

0015

0016

0017

0018

0019

001A

001B

001C

001D

001E

001F

0020

0021

0022

0023

0024

0025

0026

0027

0028

0029

 

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