FLEXIBLE ON-DIE FABRIC INTERFACE

This disclosure pertains to point-to-point interconnects. For example, an apparatus comprises a fabric block including circuitry to support a plurality of coherent protocols, an agent block including circuitry to support at least one of the plurality of coherent protocols from the fabric block and an interface between the fabric block and the agent block. The interface includes a request physical channel to carry address and protocol level command information associated with requests from the agent block or the fabric block, a response physical channel to carry responses to the requests from the agent block or the fabric block, a data physical channel to carry data transfers from the agent block or the fabric block, and a global physical channel to carry global control signals that apply to the request physical channel, the response physical channel, and the data physical channel.