V-Series Avalon-MM DMA Interface for PCIe Solutions User Guide

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ID 683514
Date 7/31/2018
Public
Document Table of Contents
Document Table of Contents x
1. Datasheet 2. Getting Started with the Avalon-MM DMA 3. Parameter Settings 4. Registers 5. Error Handling 6. PCI Express Protocol Stack 7. V-Series Avalon-MM DMA for PCI Express 8. Transceiver PHY IP Reconfiguration A. Frequently Asked Questions for V-Series Avalon-MM DMA Interface for PCIe B. V-Series Interface for PCIe Solutions User Guide Archive C. Document Revision History
1. Datasheet x
1.1. V-Series Avalon-MM DMA Interface for PCIe* Datasheet 1.2. Features 1.3. Comparison of Avalon-ST, Avalon-MM and Avalon-MM with DMA Interfaces for V-Series Devices 1.4. Release Information 1.5. V-Series Device Family Support 1.6. Design Examples 1.7. Debug Features 1.8. IP Core Verification 1.9. Resource Utilization 1.10. V-Series Recommended Speed Grades 1.11. Creating a Design for PCI Express
1.8. IP Core Verification x
1.8.1. Compatibility Testing Environment
2. Getting Started with the Avalon-MM DMA x
2.1. Understanding the Avalon-MM DMA Ports 2.2. Generating the Testbench 2.3. Simulating the Example Design in ModelSim* 2.4. Running a Gate-Level Simulation 2.5. Generating Synthesis Files 2.6. Compiling the Design 2.7. Creating a Quartus® Prime Project
2.2. Generating the Testbench x
2.2.1. Understanding the Simulation Generated Files 2.2.2. Understanding Simulation Log File Generation
3. Parameter Settings x
3.1. System Settings 3.2. Base Address Register (BAR) Settings 3.3. Device Identification Registers 3.4. PCI Express and PCI Capabilities Parameters 3.5. PCIe Address Space Settings
3.4. PCI Express and PCI Capabilities Parameters x
3.4.1. Device Capabilities 3.4.2. Error Reporting 3.4.3. Link Capabilities 3.4.4. MSI and MSI-X Capabilities 3.4.5. Power Management
4. Registers x
4.1. Correspondence between Configuration Space Registers and the PCIe Specification 4.2. Type 0 Configuration Space Registers 4.3. Type 1 Configuration Space Registers 4.4. PCI Express Capability Structures 4.5. Intel-Defined VSEC Registers 4.6. Advanced Error Reporting Capability 4.7. DMA Descriptor Controller Registers 4.8. Control Register Access (CRA) Avalon-MM Slave Port
4.5. Intel-Defined VSEC Registers x
4.5.1. CvP Registers
4.6. Advanced Error Reporting Capability x
4.6.1. Uncorrectable Internal Error Mask Register 4.6.2. Uncorrectable Internal Error Status Register 4.6.3. Correctable Internal Error Mask Register 4.6.4. Correctable Internal Error Status Register
4.7. DMA Descriptor Controller Registers x
4.7.1. Read DMA Descriptor Controller Registers 4.7.2. Write DMA Descriptor Controller Registers 4.7.3. Read DMA and Write DMA Descriptor Format 4.7.4. Read DMA Example 4.7.5. Software Program for Simultaneous Read and Write DMA
5. Error Handling x
5.1. Physical Layer Errors 5.2. Data Link Layer Errors 5.3. Transaction Layer Errors 5.4. Error Reporting and Data Poisoning 5.5. Uncorrectable and Correctable Error Status Bits
6. PCI Express Protocol Stack x
6.1. Top-Level Interfaces 6.2. Data Link Layer 6.3. Physical Layer
6.1. Top-Level Interfaces x
6.1.1. Avalon-MM DMA Interface 6.1.2. Clocks and Reset 6.1.3. Transceiver Reconfiguration 6.1.4. Interrupts 6.1.5. PIPE
7. V-Series Avalon-MM DMA for PCI Express x
7.1. Understanding the Internal DMA Descriptor Controller 7.2. Understanding the External DMA Descriptor Controller
8. Transceiver PHY IP Reconfiguration x
8.1. Connecting the Transceiver Reconfiguration Controller IP Core 8.2. Transceiver Reconfiguration Controller Connectivity for Designs Using CvP
C. Document Revision History x
C.1. Document Revision History for the V-Series Avalon® Memory Mapped (Avalon-MM) DMA Interface for PCIe* Solutions User Guide
1. Datasheet
2. Getting Started with the Avalon-MM DMA
3. Parameter Settings
4. Registers
5. Error Handling
6. PCI Express Protocol Stack
7. V-Series Avalon-MM DMA for PCI Express
8. Transceiver PHY IP Reconfiguration
A. Frequently Asked Questions for V-Series Avalon-MM DMA Interface for PCIe
B. V-Series Interface for PCIe Solutions User Guide Archive
C. Document Revision History

Test Interface SignalsThe test_in bus provides run-time control and monitoring of the internal state of the IP core.

Signal

Direction

Description

test_in[31:0]

Input

The bits of the test_in bus have the following definitions:

  • [0]: Simulation mode. This signal can be set to 1 to accelerate initialization by reducing the value of many initialization counters.
  • [1]: Reserved. Must be set to 1’b0
  • [2]: Descramble mode disable. This signal must be set to 1 during initialization in order to disable data scrambling. You can use this bit in simulation for Gen1 and Gen2 Endpoints and Root Ports to observe descrambled data on the link. Descrambled data cannot be used in open systems because the link partner typically scrambles the data.
  • [4:3]: Reserved. Must be set to 2’b01.
  • [5]: Compliance test mode. Disable/force compliance mode. When set, prevents the LTSSM from entering compliance mode. Toggling this bit controls the entry and exit from the compliance state, enabling the transmission of Gen1, Gen2 and Gen3 compliance patterns.
  • [6]: Forces entry to compliance mode when a timeout is reached in the polling.active state and not all lanes have detected their exit condition.
  • [7]: Disable low power state negotiation. Intel recommends setting this bit.
  • [31:8]: Reserved. Set to all 0s.

For more information about using the test_in to debug, refer to the Knowledge Base Solution How can I observe the Hard IP for PCI Express PIPE interface signals for Arria V GZ and Stratix V devices? in the Related Links below.

simu_pipe_mode Input When 1'b1, counter values are reduced to speed simulation.
currentspeed[1:0]

Output

Indicates the current speed of the PCIe link. The following encodings are defined:

  • 2b’00: Undefined
  • 2b’01: Gen1
  • 2b’10: Gen2
  • 2b’11: Gen3
Related Information
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