ddcc / intel-fpga-bbb

Basic Building Blocks (BBB) for OPAE-managed Intel FPGAs

Intel FPGA Basic Building Blocks (BBB)

Basic Building Blocks (BBB) for Intel FPGAs is a suite of application building blocks and shims for transforming the CCI-P interface.

For detailed documentation of the building blocks, please visit the BBB Wiki.

BBB_cci_mpf

Memory Properties Factory (MPF): MPF shims may be mixed and matched to add features to the base CCI-P memory interface. Features include: virtual memory, ordered read responses, read/write hazard detection, and masked (partial) writes.

BBB_ccip_async

CCI-P Async-shim (CCI-P ASYNC): A clock crossing shim, allowing users to attach slower-running accelerators to the CCI-P interface.

BBB_ccip_mux

CCI-P Multiplexer (CCI-P MUX): Allows multiple CCI-P compliant agents to share a single CCI-P interface.

These building blocks are implemented in SystemVerilog RTL and C or C++.

Versions

Interfaces and scripts in the BBB repository track changes in the OPAE SDK. Master here may require OPAE SDK's master as well. There are release branches here in the BBB repository corresponding to OPAE SDK releases.

Samples and Tutorial

A tutorial on CCI-P and Basic Building Blocks (BBB) is in the top-level samples directory.

Release Quality

The BBBs should be considered reference sample code that customers may use or modify for their own work. No kernel modules are released in the BBB project. All Basic Building Blocks are tested with supplied examples on an Ubuntu 14.04 64-bit OS machine with an Integrated Xeon-FPGA. All the BBBs are known to work with the OPAE AFU Simulation Environment (ASE). The project must be considered Alpha quality, and must be used "as-is".

How To Contribute

Feel free to fork, contribute and share your code as-is in accordance with the BSD-3 license. We encourage submitting bug fixes to the repository via a pull request in line with our contribution guidelines.

The Intel FPGA Basic Building Blocks (BBB) project uses a recommended (minimum) directory structure. All BBBs must start with a BBB_ prefix. In your pull-requests, please use the following format:

	BBB_<name>
	|-- hw          : Hardware must be staged here
	|   |-- rtl     :   RTL files
	|   |-- sim     :   Simulation files list (if available)
	|   `-- par     :   PAR-specific files
	|-- sw          : BBB-specific SW code
	`-- samples     : Samples showing how to use the BBB

NOTE:

• For the sake of space do not check in application objects, libraries, or bitstreams into the repository.
  • In the 'par' directory, check in only Quartus settings snippets.
  • Do the same for SDC files.
  • Do not check in Quartus projects here.
• Please provide a list of required files for 'par' and 'sim'.
• If the BBB requires a common set of steps, please consider providing SW helper functions that can be reused.