R-Tile Avalon® Streaming Intel® FPGA IP for PCI Express* User Guide

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ID 683501
Date 10/02/2023
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Document Table of Contents
Document Table of Contents x
1. About the R-Tile Avalon® Streaming Intel® FPGA IP for PCI Express 2. IP Architecture and Functional Description 3. Advanced Features 4. Interfaces 5. Parameters 6. Troubleshooting/Debugging 7. R-Tile Avalon® Streaming Intel® FPGA IP for PCI Express* User Guide Archives 8. Document Revision History for the R-Tile Avalon® Streaming Intel FPGA IP for PCI Express User Guide A. Configuration Space Registers B. Root Port Enumeration C. Implementation of Address Translation Services (ATS) in Endpoint Mode D. Packets Forwarded to the User Application in TLP Bypass Mode E. Margin Masks for the R-Tile Avalon Streaming Intel FPGA IP for PCI Express
1. About the R-Tile Avalon® Streaming Intel® FPGA IP for PCI Express x
1.1. Overview 1.2. Features 1.3. Release Information 1.4. Device Family Support 1.5. Performance and Resource Utilization 1.6. IP Core Support Levels
1.1. Overview x
1.1.1. Standards and Specifications Compliance
1.2. Features x
1.2.1. Multifunction and Virtualization Features
2. IP Architecture and Functional Description x
2.1. Overview 2.2. PCIe Hard IP Mode 2.3. PIPE Direct Mode
2.2. PCIe Hard IP Mode x
2.2.1. Clocking 2.2.2. Reset 2.2.3. PCI Express Protocol Stack
2.2.2. Reset x
2.2.2.1. Single PERST 2.2.2.2. Independent PERST Pins 2.2.2.3. Independent GPIO PERST
2.2.2.2. Independent PERST Pins x
2.2.2.2.1. REFCLK and PERST Guidelines When Using Independent PERST Pins
2.2.2.3. Independent GPIO PERST x
2.2.2.3.1. REFCLK and PERST Guidelines when Using Independent GPIO PERST
2.2.3. PCI Express Protocol Stack x
2.2.3.1. PMA 2.2.3.2. Data Link Layer Overview 2.2.3.3. Transaction Layer Overview
2.2.3.3. Transaction Layer Overview x
2.2.3.3.1. Deferrable Memory Write (DMWr)
2.3. PIPE Direct Mode x
2.3.1. Clocking 2.3.2. Reset 2.3.3. PIPE Layer
2.3.3. PIPE Layer x
2.3.3.1. Preset Mappings
3. Advanced Features x
3.1. PCIe Port Bifurcation and PHY Channel Mapping 3.2. Virtualization Support 3.3. TLP Bypass Mode
3.2. Virtualization Support x
3.2.1. SR-IOV Support 3.2.2. VirtIO Support
3.2.1. SR-IOV Support x
3.2.1.1. SR-IOV Supported Features List 3.2.1.2. Implementation 3.2.1.3. VF to PF Mapping 3.2.1.4. Function Level Reset (FLR)
3.2.1.2. Implementation x
3.2.1.2.1. VF Error Flag Interface (for x16/x8 Cores Only)
3.2.2. VirtIO Support x
3.2.2.1. VirtIO Supported Features List 3.2.2.2. Overview 3.2.2.3. Parameters 3.2.2.4. VirtIO PCI Configuration Access Interface 3.2.2.5. Registers
3.2.2.5. Registers x
3.2.2.5.1. VirtIO Common Configuration Capability Register (Address: 0x012) 3.2.2.5.2. VirtIO Common Configuration BAR Indicator Register (Address: 0x013) 3.2.2.5.3. VirtIO Common Configuration BAR Offset Register (Address: 0x014) 3.2.2.5.4. VirtIO Common Configuration Structure Length Register (Address 0x015) 3.2.2.5.5. VirtIO Notifications Capability Register (Address: 0x016) 3.2.2.5.6. VirtIO Notifications BAR Indicator Register (Address: 0x017) 3.2.2.5.7. VirtIO Notifications BAR Offset Register (Address: 0x018) 3.2.2.5.8. VirtIO Notifications Structure Length Register (Address: 0x019) 3.2.2.5.9. VirtIO Notifications Notify Off Multiplier Register (Address: 0x01A) 3.2.2.5.10. VirtIO ISR Status Capability Register (Address: 0x02F) 3.2.2.5.11. VirtIO ISR Status BAR Indicator Register (Address: 0x030) 3.2.2.5.12. VirtIO ISR Status BAR Offset Register (Address: 0x031) 3.2.2.5.13. VirtIO ISR Status Structure Length Register (Address: 0x032) 3.2.2.5.14. VirtIO Device Specific Capability Register (Address: 0x033) 3.2.2.5.15. VirtIO Device Specific BAR Indicator Register (Address: 0x034) 3.2.2.5.16. VirtIO Device Specific BAR Offset Register (Address 0x035) 3.2.2.5.17. VirtIO Device Specific Structure Length Register (Address: 0x036) 3.2.2.5.18. VirtIO PCI Configuration Access Capability Register (Address: 0x037) 3.2.2.5.19. VirtIO PCI Configuration Access BAR Indicator Register (Address: 0x038) 3.2.2.5.20. VirtIO PCI Configuration Access BAR Offset Register (Address: 0x039) 3.2.2.5.21. VirtIO PCI Configuration Access Structure Length Register (Address: 0x03A) 3.2.2.5.22. VirtIO PCI Configuration Access Data Register (Address: 0x03B)
3.3. TLP Bypass Mode x
3.3.1. Overview 3.3.2. Register Settings for the TLP Bypass Mode 3.3.3. Hard IP Reconfiguration Interface 3.3.4. Avalon® Streaming Interface
3.3.2. Register Settings for the TLP Bypass Mode x
3.3.2.1. TLPBYPASS_ERR_EN (Address 0x1314) 3.3.2.2. TLPBYPASS_ERR_STATUS (Address 0x1310)
3.3.4. Avalon® Streaming Interface x
3.3.4.1. Configuration TLP 3.3.4.2. Transmit Interface 3.3.4.3. Receive Interface 3.3.4.4. Malformed TLP 3.3.4.5. ECRC
4. Interfaces x
4.1. Clocks and Resets 4.2. Serial Data Interface 4.3. PCI Express Mode 4.4. PIPE Direct Mode
4.1. Clocks and Resets x
4.1.1. Clocks 4.1.2. Resets
4.3. PCI Express Mode x
4.3.1. Avalon® Streaming Interface 4.3.2. Precision Time Measurement (PTM) Interface (Endpoint Only) 4.3.3. Interrupt Interface 4.3.4. Hard IP Reconfiguration Interface 4.3.5. Error Interface 4.3.6. Completion Timeout Interface 4.3.7. Configuration Intercept Interface 4.3.8. Power Management Interface 4.3.9. Hard IP Status Interface 4.3.10. Page Request Services (PRS) Interface (Endpoint Only) 4.3.11. Function-Level Reset (FLR) Interface (Endpoint Only) 4.3.12. SR-IOV VF Error Flag Interface (Endpoint Only) 4.3.13. General Purpose VSEC Interface
4.3.1. Avalon® Streaming Interface x
4.3.1.1. TLP Header and Data Alignment for the Avalon® streaming RX and TX Interfaces 4.3.1.2. Credit Control 4.3.1.3. Avalon® Streaming RX Interface 4.3.1.4. Avalon® Streaming TX Interface 4.3.1.5. Tag Allocation
4.3.1.2. Credit Control x
4.3.1.2.1. Credit Interface - Data and Header 4.3.1.2.2. Credit Initialization 4.3.1.2.3. Credit Update/Release 4.3.1.2.4. RX Flow Control Interface 4.3.1.2.5. TX Flow Control Interface
4.3.1.3. Avalon® Streaming RX Interface x
4.3.1.3.1. Application Logic Guidelines for the Avalon Streaming RX Interface
4.3.1.4. Avalon® Streaming TX Interface x
4.3.1.4.1. Application Logic Guidelines for the Avalon Streaming TX Interface 4.3.1.4.2. Avalon® Streaming TX Interface pX_tx_st_ready_o Behavior
4.3.1.5. Tag Allocation x
4.3.1.5.1. Completion Buffer Size
4.3.3. Interrupt Interface x
4.3.3.1. Legacy Interrupts 4.3.3.2. MSI 4.3.3.3. MSI-X
4.3.3.3. MSI-X x
4.3.3.3.1. Implementing MSI-X Interrupts
4.3.8. Power Management Interface x
4.3.8.1. D3Hot Entry 4.3.8.2. D3Hot Exit 4.3.8.3. D3Cold Entry 4.3.8.4. D3Cold Exit
4.3.8.2. D3Hot Exit x
4.3.8.2.1. D3Hot Exit Initiated by Host 4.3.8.2.2. D3Hot Exit Initiated by EP
4.4. PIPE Direct Mode x
4.4.1. Data Signals 4.4.2. Command and Status Signals 4.4.3. Message Bus Signals 4.4.4. Deskew Signals 4.4.5. PIPE Direct Reset Sequence 4.4.6. PIPE Direct Speed Change 4.4.7. PIPE Lane Reset Staggering 4.4.8. Unused Lanes in PIPE Direct Mode
4.4.1. Data Signals x
4.4.1.1. Transmit Signals 4.4.1.2. Receive Signals
4.4.4. Deskew Signals x
4.4.4.1. MAC to PHY (M2P) Signals 4.4.4.2. PHY to MAC (P2M) Signals
5. Parameters x
5.1. Top-Level Settings 5.2. Core Parameters
5.2. Core Parameters x
5.2.1. Avalon Parameters 5.2.2. Base Address Registers 5.2.3. PCI Express and PCI Capabilities Parameters
5.2.3. PCI Express and PCI Capabilities Parameters x
5.2.3.1. Device Capabilities 5.2.3.2. VirtIO Parameters 5.2.3.3. Link Capabilities 5.2.3.4. Legacy Interrupt Pin Register 5.2.3.5. MSI Capabilities 5.2.3.6. MSI-X Capabilities 5.2.3.7. Slot Capabilities 5.2.3.8. Latency Tolerance Reporting (LTR) 5.2.3.9. Process Address Space ID (PASID) 5.2.3.10. Device Serial Number Capability 5.2.3.11. Page Request Service (PRS) 5.2.3.12. Access Control Service (ACS) 5.2.3.13. Power Management 5.2.3.14. Vendor Specific Extended Capability (VSEC) Registers 5.2.3.15. TLP Processing Hints (TPH) 5.2.3.16. Address Translation Services (ATS) Capabilities 5.2.3.17. Precision Time Measurement (PTM)
6. Troubleshooting/Debugging x
6.1. Hardware Debug 6.2. Operating System Tools and Utilities 6.3. Signal Tap Logic Analyzer 6.4. Using the Hard IP Reconfiguration Interface for Debugging 6.5. Other Interfaces That Can Be Used for Debug Activities 6.6. Debug Toolkit
6.1. Hardware Debug x
6.1.1. Debugging Link Training Issues 6.1.2. Debugging Device Enumeration Issues 6.1.3. Debugging Data Transfer and Performance Issues
6.1.3. Debugging Data Transfer and Performance Issues x
6.1.3.1. Advanced Error Reporting (AER)
6.2. Operating System Tools and Utilities x
6.2.1. Using lspci Utility to Read Negotiated Link Speed
6.4. Using the Hard IP Reconfiguration Interface for Debugging x
6.4.1. Using the Hard IP Reconfiguration Interface to Enable and Read ECRC and LCRC Error Counts
6.6. Debug Toolkit x
6.6.1. Overview 6.6.2. Enabling the R-Tile Debug Toolkit 6.6.3. Launching the R-Tile Debug Toolkit 6.6.4. Using the R-Tile Debug Toolkit
6.6.4. Using the R-Tile Debug Toolkit x
6.6.4.1. R-Tile Information 6.6.4.2. Event Counters 6.6.4.3. Link Inspector 6.6.4.4. Configuration Space 6.6.4.5. Channel Parameters
6.6.4.5. Channel Parameters x
6.6.4.5.1. General PHY 6.6.4.5.2. Tx Path 6.6.4.5.3. Rx Path 6.6.4.5.4. Lane Margining
C. Implementation of Address Translation Services (ATS) in Endpoint Mode x
C.1. Sending Translated/Untranslated Requests C.2. Sending a Page Request Message from the Endpoint (EP) to the Root Complex (RC) C.3. Invalidating Requests/Completions
D. Packets Forwarded to the User Application in TLP Bypass Mode x
D.1. Upstream TLP Bypass Mode D.2. Downstream TLP Bypass Mode
E. Margin Masks for the R-Tile Avalon Streaming Intel FPGA IP for PCI Express x
E.1. Margin Masks Overview E.2. 5x5 Testing Efficiency E.3. Debug Toolkit Margin Methodology
E.2. 5x5 Testing Efficiency x
E.2.1. First Time Testing E.2.2. Spot Check Testing
E.3. Debug Toolkit Margin Methodology x
E.3.1. Debug Toolkit Testing Process
1. About the R-Tile Avalon® Streaming Intel® FPGA IP for PCI Express
2. IP Architecture and Functional Description
3. Advanced Features
4. Interfaces
5. Parameters
6. Troubleshooting/Debugging
7. R-Tile Avalon® Streaming Intel® FPGA IP for PCI Express* User Guide Archives
8. Document Revision History for the R-Tile Avalon® Streaming Intel FPGA IP for PCI Express User Guide
A. Configuration Space Registers
B. Root Port Enumeration
C. Implementation of Address Translation Services (ATS) in Endpoint Mode
D. Packets Forwarded to the User Application in TLP Bypass Mode
E. Margin Masks for the R-Tile Avalon Streaming Intel FPGA IP for PCI Express

D.1. Upstream TLP Bypass Mode

Table 116.  Packets Forwarded in Upstream TLP Bypass Mode
TLP Type Routing PCIe Specification Direction TLP Corruption Forwarded to Avalon® -ST Interface
ASSERT/DEASSERT INTx Local Upstream None No
Ecrc_err No
Malformed No
VENDOR_MESSAGE_0/1 Route_to_RC Upstream None

No (VENDOR0)

Yes (VENDOR1)
Poisoned

No (VENDOR0)

Yes (VENDOR1)
Ecrc_err Yes
Malformed No
VENDOR_MESSAGE_0/1 Route_by_ID Both None Yes
ID_mismatch Yes
Poisoned Yes
Ecrc_err Yes
Malformed No
VENDOR_MESSAGE_0/1 Broadcast Downstream None Yes
Poisoned

Yes
Ecrc_err Yes
Malformed No
VENDOR_MESSAGE_0/1 Local Both None Yes
Poisoned

Yes
Ecrc_err Yes
Malformed No
PM_ACTIVE_STATE_NAK Local Downstream None Yes
Ecrc_err Yes
Malformed No
PM_PME Route_to_RC Upstream None No
Ecrc_err Yes
Malformed No
PME_TURN_OFF Broadcast Downstream None Yes
Ecrc_err Yes
Malformed No
PME_TO_ACK Gather Upstream None No
Ecrc_err Yes
Malformed No
ERR_COR Route_to_RC Upstream None No
Ecrc_err Yes
Malformed No
ERR_NONFATAL Route_to_RC Upstream None No
Ecrc_err Yes
Malformed No
ERR_FATAL Route_to_RC Upstream None No
Ecrc_err Yes
Malformed No
UNLOCK Broadcast Downstream None Yes
Ecrc_err Yes
Malformed No
SET_SLOT_POWER_LIMIT Local Downstream None Yes
Poisoned Yes
Ecrc_err Yes
Malformed No
LN_MESSAGE Route_by_ID Both None Yes
ID_mismatch Yes
Poisoned Yes
Ecrc_err Yes
Malformed No
LN_MESSAGE Broadcast Downstream None Yes
Poisoned Yes
Ecrc_err Yes
Malformed No
DRS_MESSAGE Local Upstream None Yes
Ecrc_err Yes
Malformed No
FRS_MESSAGE Route_to_RC Upstream None Yes
Ecrc_err Yes
Malformed No
HIERARCHY_ID_MSG Broadcast Downstream None Yes
Poisoned Yes
Ecrc_err Yes
Malformed No
IGNORED_MSG_ATT_ON Local Downstream None Yes
Ecrc_err Yes
Malformed No
IGNORED_MSG_ATT_BLINK Local Downstream None Yes
Ecrc_err Yes
Malformed No
IGNORED_MSG_ATT_OFF Local Downstream None Yes
Ecrc_err Yes
Malformed No
IGNORED_MSG_IND_ON Local Downstream None Yes
Ecrc_err Yes
Malformed No
IGNORED_MSG_IND_BLINK Local Downstream None Yes
Ecrc_err Yes
Malformed No
IGNORED_MSG_IND_OFF Local Downstream None Yes
Ecrc_err Yes
Malformed No
IGNORED_MSG_ATT_BT_PRESS Local Upstream None Yes
Ecrc_err Yes
Malformed No
LTR_MESSAGE Local Upstream None No
Poisoned No
Ecrc_err Yes
Malformed No
OBFF_MESSAGE Local Downstream None No
Poisoned No
Ecrc_err Yes
Malformed No
PTM_REQUEST Local Upstream None No
Ecrc_err Yes
Malformed No
PTM_RESPONSE Local Downstream None No
Poisoned No
Ecrc_err Yes
Malformed No
PTM_RESPONSE_D Local Downstream None No
Poisoned No
Ecrc_err Yes
Malformed No
INVALIDATE_REQUEST Route_by_ID Both None Yes
ID_mismatch Yes
Poisoned Yes
Ecrc_err Yes
Malformed No
INVALIDATE_COMPLETION Route_by_ID Both None Yes
ID_mismatch Yes
Poisoned Yes
Ecrc_err Yes
Malformed No
CFG_WR_0 Route_by_ID Downstream None Yes
ID_mismatch Yes
Poisoned Yes
Ecrc_err Yes
Malformed No
CFG_WR_1 Route_by_ID Downstream None Yes
ID_mismatch Yes
Poisoned Yes
Ecrc_err Yes
Malformed No
CFG_RD_0 Route_by_ID Downstream None Yes
ID_mismatch Yes
Ecrc_err Yes
Malformed No
CFG_RD_1 Route_by_ID Downstream None Yes
ID_mismatch Yes
Ecrc_err Yes
Malformed No
IO_WR Address Downstream None Yes
Addr_mismatch Yes
Poisoned Yes
Ecrc_err Yes
Malformed No
IO_RD Address Downstream None Yes
Addr_mismatch Yes
Ecrc_err Yes
Malformed No
MEM_WR_32/64 Address Both None Yes
Addr_mismatch Yes
Poisoned Yes
Ecrc_err Yes
Malformed No
MEM_RD_32/64 Address Both None Yes
Addr_mismatch Yes
Ecrc_err Yes
Malformed No
MEM_RD_LK_32/64 Address Both None Yes
Addr_mismatch Yes
Ecrc_err Yes
Malformed No
ATOMIC_FETCH_ADD_32/64 Address Both None Yes
Addr_mismatch Yes
Poisoned Yes
Ecrc_err Yes
Malformed No
ATOMIC_SWAP_32/64 Address Both None Yes
Addr_mismatch Yes
Poisoned Yes
Ecrc_err Yes
Malformed No
ATOMIC_CAS_32/64/128 Address Both None Yes
Addr_mismatch Yes
Poisoned Yes
Ecrc_err Yes
Malformed

32/64: No

128: No stimulus
CPL Route_by_ID Both None Yes
ID_mismatch Yes
LUT_mismatch Yes
Ecrc_err Yes
Malformed No
CA_status Yes
UR_status Yes
CRS_status Yes
CPLD Route_by_ID Both None Yes
ID_mismatch Yes
LUT_mismatch Yes
Poisoned Yes
Ecrc_err Yes
Malformed No
Level Two Title