pulp-platform/axi v0.39.0

on GitHub

Added

• Synthesizable IPs:
  • axi_bus_compare and axi_slave_compare; two synthesizable verification IPs meant to be used
    to compare two AXI buses on an FPGA.
  • axi_lite_from_mem and axi_from_mem acting like SRAMs making AXI4 requests downstream.
  • axi_lite_dw_converter: Convert the data width of AXI4-Lite transactions. Emits the
    appropriate amount of downstream transactions to perform the whole requested access.
  • axi_rw_join and axi_rw_split to split/join the read and write channels of an AXI bus.
• CT-macros allowing to instantiate AXI structs with custom channel type names.
• axi_pkg': Add documentation to xbar_cfg_t`.
• Testbench IPs:
  • axi_chan_compare.sv: Non-synthesizable module comparing two AXI channels of the same type
  • Add axi_file_master to axi_test, allowing file-based AXI verification approaches.
  • Add #_width functions to axi_test returning the width of the AXI channels.

Changed

• Synthesizable IPs:
  • axi_demux: Replace FIFO between AW and W channel by a register plus a counter. This prevents
    AWs from being issued to one master port while Ws from another burst are ongoing to another
    master port. This is required to prevents deadlocks due to circular waits downstream. Removes
    FallThrough parameter from axi_demux.
  • Split the axi_demux logic and timing decoupling. A new module called axi_demux_simple contains
    the core logic.
  • axi_dw_downsizer uses axi_pkg::RESP_EXOKAY as a default value.
  • Simplify the casez in axi_id_remap.
  • Add optional explicit mapping to the axi_id_serialize module.
  • Expand axi_to_mem to axi_to_detailed_mem exposing all of AXI's side-signals; namely id, user,
    cache, prot, qos, region, atop. Add possibility to inject err and exokay.
  • axi_xbar: Add parameter PipelineStages to axi_pkg::xbar_cfg_t. This adds axi_multicuts
    in the crossed connections in the xbar between the demuxes and muxes. Improve inline
    documentation.
  • Move mem_to_banks to common_cells.
• axi_pkg: Improve for better compatibility with Vivado.
• `axi_test:
  • axi_lite_rand_slave: R response field is now randomized.
  • Remove excessive prints from random master and slave.
  • Properly size-align the address.
• axi_pkg: Define localparams to define AXI type widths.
• Update common_cells from version v1.26.0 to v1.27.0.
• Tooling:
  • Use pulp-platform/pulp-actions/gitlab-ci@v2 in the GitHub CI to communicate with the internal CI.
  • Bump DC Shell version from 2019.12 to 2022.03
  • No longer check ModelSim versions 10.7e and 2021.3, add 2022.3.
  • More thorough verification runs for the xbar.
  • Start transitioning from shell script to Makefile to run simulations.
• Use scripts/update_authors to update authors, slight manual fixes performed.

Fixed

• axi_to_mem_banked: Reduce hardware by properly setting UniqueIds.
• axi_to_mem_interleaved and axi_to_mem_split properly instantiates a demultiplexer now.
  Adds test_i port for DFT.

Breaking Changes

There are breaking changes between v0.38.0 and v0.39.0:

• axi_demux: FallThrough parameter was removed.
• axi_xbar: axi_pkg::xbar_cfg_t added PipelineStages parameter.
• axi_to_mem_interleaved and axi_to_mem_split: Added test_i input port.