Tunneling of peripheral-bus protocol traffic over coherent fabric and chip-to-chip or die-to-die bus

Abstract

A peripheral device includes a main chip that includes a coherent interconnect, one or more first peripheral-bus modules, a Chip-to-Chip (C2C) or Die-to-Die (D2D) interface, and one or more tunnel adapters. The coherent interconnect is to connect electronic components of the peripheral device in accordance with a coherent interconnect protocol. The one or more first peripheral-bus modules are to communicate in accordance with a peripheral-bus protocol. The C2C or D2D interface is to communicate over a C2C or D2D bus with an auxiliary chip that includes one or more second peripheral-bus modules. The one or more tunnel adapters are to convey peripheral-bus packets of the peripheral-bus protocol between the first and second peripheral-bus modules over the coherent interconnect and the C2C or D2D bus, by translating between the peripheral-bus packets, messages of the coherent interconnect protocol and C2C or D2D bus messages.