litepcie by enjoy-digital
Small footprint and configurable PCIe core
__ _ __ ___ _________ / / (_) /____ / _ \/ ___/ _/__ / /__/ / __/ -_) ___/ /___/ // -_) /____/_/\__/\__/_/ \___/___/\__/ Copyright 2015-2017 / EnjoyDigital A small footprint and configurable PCIe core with MMAP interface and scatter-gather DMA powered by LiteX [> Intro -------- LitePCIe provides a small footprint and configurable PCIe gen1/2 core. LitePCIe is part of LiteX libraries whose aims are to lower entry level of complex FPGA cores by providing simple, elegant and efficient implementations of components used in today's SoC such as Ethernet, SATA, PCIe, SDRAM Controller... The core uses simple and specific streaming buses and will provides in the future adapters to use standardized AXI or Avalon-ST streaming buses. Since Python is used to describe the HDL, the core is highly and easily configurable. LitePCIe is built using LiteX and uses technologies developed in partnership with M-Labs Ltd: - Migen enables generating HDL with Python in an efficient way. - MiSoC provides the basic blocks to build a powerful and small footprint SoC. LitePCIe can be used as LiteX library or can be integrated with your standard design flow by generating the verilog rtl that you will use as a standard core. [> Features ----------- - 7-Series Artix7/Kintex7 PHY (up to PCIe Gen2 X2) - Scatter-gather DMA - Wishbone bridge - Linux driver with DMA loopback demo and Sysfs [> FPGA Proven --------------- LitePCIe is already used in commercial and open-source designs: - PCIe SDR MIMO 2x2: https://www.amarisoft.com/products-lte-ue-ots-sdr-pcie/#sdr - PCIe TLP sniffer/injector: https://ramtin-amin.fr/#nvmedma [> Possible improvements ------------------------ - add standardized interfaces (AXI, Avalon-ST) - add support for PCIe Gen2 X4 and X8 on 7-Series - clean up 7-Series wrappers - add Ultrascale support - add Altera/Lattice support - ... See below Support and consulting :) If you want to support these features, please contact us at florent [AT] enjoy-digital.fr. You can also contact our partner on the public mailing list devel [AT] lists.m-labs.hk. [> Getting started ------------------ 1. Install Python3 and your vendor's software 2. Obtain LiteX and install it: git clone https://github.com/enjoy-digital/litex --recursive cd litex python3 setup.py install cd .. 3. Build PCIe DMA loopback design (only for KC705 for now): go to example_designs/ run ./make.py all 4. Build and load Linux Driver: go to software/linux/kernel make all ./init.sh 5. Build and load Linux utilities: go to software/linux/user make all ./litepcie_util dma_loopback_test [> Simulations --------------- Unit tests are available in ./test/. To run all the unit tests: ./setup.py test Tests can also be run individually: python3 -m unittest test.test_name [> Tests -------- A DMA loopback example with Wishbone over Sysfs is provided. Please go to Getting Started section to see how to run the tests. [> License ---------- LitePCIe is released under the very permissive two-clause BSD license. Under the terms of this license, you are authorized to use LiteEth for closed-source proprietary designs. Even though we do not require you to do so, those things are awesome, so please do them if possible: - tell us that you are using LitePCIe - cite LitePCIe in publications related to research it has helped - send us feedback and suggestions for improvements - send us bug reports when something goes wrong - send us the modifications and improvements you have done to LitePCIe. [> Support and consulting ------------------------- We love open-source hardware and like sharing our designs with others. LitePCIe is mainly developed and maintained by EnjoyDigital. If you would like to know more about LitePCIe or if you are already a happy user and would like to extend it for your needs, EnjoyDigital can provide standard commercial support as well as consulting services. So feel free to contact us, we'd love to work with you! (and eventually shorten the list of the possible improvements :) [> Contact ---------- E-mail: florent [AT] enjoy-digital.fr
Unless otherwise noted, LitePCIe is copyright (C) 2015 Florent Kermarrec. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Other authors retain ownership of their contributions. If a submission can reasonably be considered independently copyrightable, it's yours and we encourage you to claim it with appropriate copyright notices. This submission then falls under the "otherwise noted" category. All submissions are strongly encouraged to use the two-clause BSD license reproduced above.