tree e1fb3fc787b9f57ede09b8e4349ec8aae7c44488
parent d37c76f2ebd26bad95886abda2e1324121f1e58f
author Martin Lueker-Boden <martin.lueker-boden@wdc.com> 1667771195 -0800
committer Martin Lueker-Boden <47870387+martin-lueker@users.noreply.github.com> 1668101616 -0800

[entropy_src/dv] No backpressure on AST RNG agent

The Raw RNG source used by the top-level AST top is expected to not
respect the `ready` output from the `entropy_src`.  This commit modifies
the host/push variant of the `push_pull_driver`, to optionially mimic
such an external device.

This change is helpful in in closing the `main_sm` transition coverage.
The transition StartupHTStart->Idle transition can be blocked if there
is always an RNG sample waiting at the RNG IF, as many parts of the DUT,
including the FSM, wait for the state of the internal FIFOs to
self-clear before fully shutting down.

Signed-off-by: Martin Lueker-Boden <martin.lueker-boden@wdc.com>
Co-authored-by: Andreas Kurth <github@akurth.net>