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Snoop or DVM messages received while in reset

Sometimes, snoop or DVM messages are received while a cluster is in reset.

Cause

The CCI-400 has been instructed to enable snoop or DVM messages to a cluster that is held in reset.

Reason

Sending these messages to the cluster in reset might result in deadlock.

Examples

  • <name>: Received a Distributed Virtual Memory (DVM) message whilst cache is held in reset.
This could deadlock the hardware. Message is:-
    <DVM-message>
  •  *** ERROR: Cache <name> received a snoop request whilst it was in reset!
  • <name>: upstream port <N> (numbered from 0) changed its reset signal from <old-level> to <new-level>
However, a pending change in snoop request is pending. This might deadlock the hardware.
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