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1. Introduction
2. Quick Start Guide
3. Interface Overview
4. Parameters
5. Designing with the IP Core
6. Block Descriptions
7. Registers
8. Programming Model for the DMA Descriptor Controller
9. Programming Model for the Avalon® -MM Root Port
10. Avalon-MM Testbench and Design Example
11. Document Revision History
A. PCI Express Core Architecture
B. Root Port Enumeration
C. Troubleshooting and Observing the Link Status
2.1. Design Components
2.2. Hardware and Software Requirements
2.3. Directory Structure
2.4. Generating the Design Example
2.5. Simulating the Design Example
2.6. Compiling the Design Example and Programming the Device
2.7. Installing the Linux Kernel Driver
2.8. Running the Design Example Application
7.1.1. Register Access Definitions
7.1.2. PCI Configuration Header Registers
7.1.3. PCI Express Capability Structures
7.1.4. Intel Defined VSEC Capability Header
7.1.5. Uncorrectable Internal Error Status Register
7.1.6. Uncorrectable Internal Error Mask Register
7.1.7. Correctable Internal Error Status Register
7.1.8. Correctable Internal Error Mask Register
7.2.1.1. Avalon-MM to PCI Express Interrupt Status Registers
7.2.1.2. Avalon-MM to PCI Express Interrupt Enable Registers
7.2.1.3. Address Mapping for High-Performance Avalon-MM 32-Bit Slave Modules
7.2.1.4. PCI Express to Avalon-MM Interrupt Status and Enable Registers for Endpoints
7.2.1.5. PCI Express Configuration Information Registers
10.5.1. ebfm_barwr Procedure
10.5.2. ebfm_barwr_imm Procedure
10.5.3. ebfm_barrd_wait Procedure
10.5.4. ebfm_barrd_nowt Procedure
10.5.5. ebfm_cfgwr_imm_wait Procedure
10.5.6. ebfm_cfgwr_imm_nowt Procedure
10.5.7. ebfm_cfgrd_wait Procedure
10.5.8. ebfm_cfgrd_nowt Procedure
10.5.9. BFM Configuration Procedures
10.5.10. BFM Shared Memory Access Procedures
10.5.11. BFM Log and Message Procedures
10.5.12. Verilog HDL Formatting Functions
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6. Block Descriptions
The Intel L-/H-Tile Avalon-MM for PCI Express IP core combines the features of the Avalon-MM and Avalon-MM DMA variants of previous generations.The Avalon-MM DMA Bridge includes these functions in soft logic. The DMA bridge is a front-end to the Hard IP for PCI Express IP core. An Avalon-ST scheduler links the DMA bridge and PCIe IP core. It provides round-robin access to TX and RX data streams.
Figure 35. Intel L-/H-Tile Avalon-MM for PCI Express Block Diagram
You can enable the individual optional modules of the DMA bridge in the component GUI. The following constraints apply:
- You must enable the PCIe Read DMA module if the PCIe Write DMA module and the Internal DMA Descriptor Controller are enabled. PCIe Read DMA fetches descriptors from the host.
- You must enable the Control Register Access (CRA) Avalon-MM slave port if address mapping is enabled.
- When you enable the internal DMA Descriptor Controller, the BAR0 Avalon-MM master is not available. The DMA Descriptor Controller uses this interfaces.