v5.0.0

The major modification in this release is the support of the write-back (WB) policy (in
addition to the write-through (WT) policy). The cache can either implement one of these
policies or both in a per-cacheline basis.

• Added

  • Support of the WB policy.
  • Configuration parameters to choose between WT or WB, or both, at synthesis time.
  • Validation testbench compatible to Verilator.
  • Add a write-policy hint field in the request to select between WT and WB, dinamically.

• Removed

  • WbufSendFeedThrough parameter removed

• Changed

  • Arbitration between cacheable and uncacheable memory requests is done inside the
    HPDcache. The memory interface implements 5 channels, instead of 10.
  • The CMO type is into the operation field of the request (instead of the size field).
  • Select the victim cacheline at cache miss time (before was done on refill time). The
    slot is pre-allocated and written by the miss handler when the refill response arrives.

v4.0.0

The major modification in this release is the new scheme to set parameters of the HPDcache

Added

• Add utility macros to define the types in the interface of the HPDcache.
• Add scripts for code static check (lint)
• Add new User Guide document in reStructuredText format

Changed

• Pass configuration parameters through the top module of the HPDcache instead of
  defining them in a package. This allows different instances of the HPDcache to have
  different parameters.
• Add round-robin priority arbiter in the write-buffer to select an entry to send.
• Add fix-priority arbiter in the write-buffer to select a free entry.
• Make AXI transactions modifiable by default

Fixed

• Fix some synthesis warnings