tree 6c9e44b89e09d6a35df4c1fd3f320147fb047ef5
parent f00760fc4a8cbc6dd79fa711af4c638da4586bbf
author Eunchan Kim <eunchan@opentitan.org> 1596660672 -0700
committer Eunchan Kim <eunchan@opentitan.org> 1596737615 -0700
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[packer] Revise the implementation

Previous prim_packer focused on to reduce register FF usage. On the side
effect, it creates the timing path from valid_i --> ready_o, ready_i -->
ready_o, and valid_i --> valid_o.

Now the ready_o and valid_i is computed based on the current storage
condition, which results in the valid_o asserting at the next cycle of
valid_i earliest.

Current implementation also doesn't maximize the storage utilization
when mask_i is not full 1.

Signed-off-by: Eunchan Kim <eunchan@opentitan.org>