R-tile Avalon® Streaming Intel® FPGA IP for PCI Express* Design Example User Guide

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ID 683544
Date 3/28/2022
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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 PIO Design Example 2. Quick Start Guide 3. R-Tile Avalon® Streaming Intel® FPGA IP for PCI Express* Design Example User Guide Archives 4. Document Revision History for the R-tile Avalon® Streaming Intel FPGA IP for PCI Express Design Example User Guide
1. About the R-tile Avalon® Streaming Intel® FPGA IP for PCI Express PIO Design Example x
1.1. Credit Initialization Sequence 1.2. Hardware and Software Requirements
1.1. Credit Initialization Sequence x
1.1.1. Credit Value Initialization and Return 1.1.2. Credit Distribution
2. Quick Start Guide x
2.1. Directory Structure 2.2. Generating the Design Example 2.3. Simulating the Design Example 2.4. Root Port BFM 2.5. Compiling the Design Example 2.6. Installing the Linux Kernel Driver 2.7. Running the Design Example
2.3. Simulating the Design Example x
2.3.1. Steps to Run Simulations 2.3.2. Testbench
2.3.1. Steps to Run Simulations x
2.3.1.1. Siemens EDA QuestaSim* Simulator 2.3.1.2. VCS* Simulator 2.3.1.3. VCS* MX Simulator
2.3.2. Testbench x
2.3.2.1. Testbench Modules 2.3.2.2. Test Driver Module 2.3.2.3. PIO Design Example
2.4. Root Port BFM x
2.4.1. BFM Memory Map 2.4.2. Configuration Space Bus and Device Numbering 2.4.3. Configuration of Root Port and Endpoint 2.4.4. Issuing Read and Write Transactions to the Application Layer 2.4.5. BFM Procedures and Functions
2.4.5. BFM Procedures and Functions x
2.4.5.1. ebfm_barwr Procedure 2.4.5.2. ebfm_barwr_imm Procedure 2.4.5.3. ebfm_barrd_wait Procedure 2.4.5.4. ebfm_barrd_nowt Procedure 2.4.5.5. ebfm_cfgwr_imm_wait Procedure 2.4.5.6. ebfm_cfgwr_imm_nowt Procedure 2.4.5.7. ebfm_cfgrd_wait Procedure 2.4.5.8. ebfm_cfgrd_nowt Procedure 2.4.5.9. BFM Configuration Procedures 2.4.5.10. BFM Shared Memory Access Procedures 2.4.5.11. BFM Log and Message Procedures 2.4.5.12. Verilog HDL Formatting Functions
2.4.5.9. BFM Configuration Procedures x
2.4.5.9.1. ebfm_cfg_rp_ep Procedure 2.4.5.9.2. ebfm_cfg_decode_bar Procedure
2.4.5.10. BFM Shared Memory Access Procedures x
2.4.5.10.1. Shared Memory Constants 2.4.5.10.2. shmem_write Task 2.4.5.10.3. shmem_read Function 2.4.5.10.4. shmem_display Verilog HDL Function 2.4.5.10.5. shmem_fill Procedure 2.4.5.10.6. shmem_chk_ok Function
2.4.5.11. BFM Log and Message Procedures x
2.4.5.11.1. ebfm_display Verilog HDL Function 2.4.5.11.2. ebfm_log_stop_sim Verilog HDL Function 2.4.5.11.3. ebfm_log_set_suppressed_msg_mask Task 2.4.5.11.4. ebfm_log_set_stop_on_msg_mask Verilog HDL Task 2.4.5.11.5. ebfm_log_open Verilog HDL Function 2.4.5.11.6. ebfm_log_close Verilog HDL Function
2.4.5.12. Verilog HDL Formatting Functions x
2.4.5.12.1. himage1 2.4.5.12.2. himage2 2.4.5.12.3. himage4 2.4.5.12.4. himage8 2.4.5.12.5. himage16 2.4.5.12.6. dimage1 2.4.5.12.7. dimage2 2.4.5.12.8. dimage3 2.4.5.12.9. dimage4 2.4.5.12.10. dimage5 2.4.5.12.11. dimage6 2.4.5.12.12. dimage7
2.7. Running the Design Example x
2.7.1. Running the PIO Design Example
1. About the R-tile Avalon® Streaming Intel® FPGA IP for PCI Express PIO Design Example
2. Quick Start Guide
3. R-Tile Avalon® Streaming Intel® FPGA IP for PCI Express* Design Example User Guide Archives
4. Document Revision History for the R-tile Avalon® Streaming Intel FPGA IP for PCI Express Design Example User Guide

2.4.5.1. ebfm_barwr Procedure

The ebfm_barwr procedure writes a block of data from BFM shared memory to an offset from the specified Endpoint BAR. The length can be longer than the configured MAXIMUM_PAYLOAD_SIZE. The procedure breaks the request up into multiple transactions as needed. This routine returns as soon as the last transaction has been accepted by the VC interface module.

Location

altpcietb_g3bfm_rdwr.v

Syntax

ebfm_barwr(bar_table, bar_num, pcie_offset, lcladdr, byte_len, tclass)

Arguments

bar_table

Address of the Endpoint bar_table structure in BFM shared memory. The bar_table structure stores the address assigned to each BAR so that the driver code does not need to be aware of the actual assigned addresses only the application specific offsets from the BAR.

bar_num

Number of the BAR used with pcie_offset to determine PCI Express address.

pcie_offset

Address offset from the BAR base.

lcladdr

BFM shared memory address of the data to be written.

byte_len

Length, in bytes, of the data written. Can be 1 to the minimum of the bytes remaining in the BAR space or BFM shared memory.

tclass

Traffic class used for the PCI Express transaction.

Level Two Title