v0.35.3

Fixed

• axi_demux: Eliminate unnecessary stalls of AW channel when the AR channel has reached its
  maximum number of transactions. Prior to this fix, axi_demux would always stall AWs while read
  transactions were at their maximum (that is, while MaxTrans read transactions were outstanding).
  However, this stall is only required when the AW that is being handled by axi_demux is an atomic
  operation (ATOP) that entails an R response. This fix therefore removes unnecessary stalls as
  well as an unnecessary dependency between reads and writes. The integrity of data or transactions
  was not affected by this problem.

v0.35.2

Fixed

• axi_lite_mux_intf: Fix type of slv and mst interface ports; they were AXI_BUS instead of
  AXI_LITE.
• axi_xbar_intf: Fix order of parameters. Prior to this fix, the CONNECTIVITY parameter was
  defined using the Cfg parameter before the Cfg parameter was defined.
• axi_test::axi_rand_master: Improve compatibility with simulators by changing an implication
  inside an assertion to a conditional assertion.

v0.35.1

Fixed

• axi_demux and axi_lite_demux: Add missing spill registers for configurations with a single
  master port.
• axi_demux_intf: Add missing parameter (ATOP_SUPPORT) to optionally disable support for atomic
  operations.
• axi_mux and axi_lite_mux: Add missing spill registers for configurations with a single slave
  port.
• axi_lite_mux_intf: Add missing parameter values on the internal axi_lite_mux instance
  (axi_req_t and axi_resp_t).
• axi_sim_mem: Propagate the AR channel's user signal correctly to the monitor.

v0.35.0

Added

• axi_sim_mem: Add monitoring interface to observe the point of coherency between the write and
  the read channel.

Fixed

• axi_sim_mem: Keep R response stable while not accepted.

v0.34.0

Added

• axi_demux and axi_isolate: Add parameter AtopSupport to optionally disable the support for
  atomic operations (ATOPs). This parameter defaults to 1'b1, i.e., ATOPs are supported.
  Therefore, this change is backward-compatible.
• axi_isolate: Add parameter TerminateTransaction to optionally respond to transactions during
  isolation. This parameter defaults to 1'b0, i.e., transactions do not get responses.
  Therefore, this change is backward-compatible.
• axi_xbar: Add Connectivity parameter to enable the implementation of partially-connected
  crossbars. This parameter defaults to '1, i.e., every slave port is connected to every master
  port. Therefore, this change is backward-compatible.
• axi_test: Add monitor class axi_monitor.
• axi_test::axi_driver: Add monitor tasks.

Changed

• axi_isolate: Add parameters for the address, data, ID, and user signal width. This is required
  for the implementation of the TerminateTransaction parameter (see Added section). This change
  is backward-incompatible for all instances of axi_isolate outside this repository. Users
  must update all instances of axi_isolate in their code. The interface variant is not affected
  and remains backward-compatible.

v0.33.1

Fixed

• axi_xbar_intf: Add missing ATOPS parameter to optionally disable the support of atomic
  operations (introduced in v0.25.0 for axi_xbar). The default value of the added parameter makes
  this fix backward-compatible.

v0.33.0

Added

• Add axi_sim_mem_intf interface variant of axi_sim_mem.

Fixed

• axi_cdc: Improve compatibility with VCS by restricting a QuestaSim workaround to be used only
  for QuestaSim (issue #207).
• axi_id_remap: Improve compatibility with Verilator by excluding asserts for that tool.
• axi_lite_demux: Improve compatibility with VCS (issue #187 reported for axi_demux, which was
  fixed in v0.29.2).
• axi_xbar: Improve compatibility with VCS by adding VCS-specific code that does not use constant
  function calls (#208).

v0.32.0

Changed

• axi_atop_filter, axi_burst_splitter, axi_cut, axi_delayer, axi_demux, axi_err_slv,
  axi_isolate, axi_lite_demux, axi_lite_mux, axi_lite_to_axi, axi_lite_xbar,
  axi_multicut, axi_serializer, and axi_sim_mem: Prefix req_t and resp_t type parameters with
  axi_. This prevents type collisions in tools that have problems with correct type resolution
  and isolation. This change is backward-incompatible for all instances of the listed modules
  outside this repository. Users must update all instances of the listed modules in their code.
  Interface variants are not affected and remain backward-compatible.

v0.31.1

Fixed

• axi_xbar: Fix signal width for single master port. Before this fix, a crossbar instantiated
  with a single master port would contain arrays with incorrect dimensions.

v0.31.0

Added

• Add three modules to convert between any two AXI ID widths under many different concurrency
  requirements:
  • axi_iw_converter is the top-level module that converts between any two AXI ID widths with all
    supported parameters. It upsizes IDs by extending the MSBs with zeros and joins two interfaces
    with identical ID widths. For downsizing IDs, it instantiates one of the following two modules:
  • axi_id_remap remaps AXI IDs from wide IDs at the slave port to narrower IDs at the master
    port without serializing transactions.
  • axi_id_serialize reduces AXI IDs by serializing transactions when necessary.