Multicore, multibank, fully concurrent coherence controller

A method comprising:

• receiving, at a controller, a read request that includes a first address tag;
• applying, by the controller, the first address tag to a plurality of snoop filter banks coupled to a plurality of cache tag banks to determine that a unique state is associated with the first address tag;
• issuing, by the controller, a first snoop request to a peripheral in response to determining that the unique state is associated with the first address tag;
• if the first snoop request returns a first value, responding, by the controller, to the read request with the first value;
• and
• if the first snoop request does not return a value, retrieving, by the controller, a second value from a plurality of memory banks coupled to the plurality of cache tag banks or from an external memory and respond to the read request with the second value, wherein:
• each of the plurality of cache tag banks, the plurality of snoop filter banks, and the plurality of memory banks is coupled by respective cache way lines;
• and
• the controller is configured to access each line of the respective cache way lines in parallel.