Implementation of a Quickpath interconnect protocol on a PCIe interface

Methods and apparatus for implementing the Intel QuickPath Interconnect The upper layers of the QPI protocol are implemented in a physical layer of the PCIe interface by using QPI Datenbitabbildungen to respective PCIe x16, x8, and x4-detector configurations. An interface of a QPI-link layer to a PCIe physical layer is used to abstract the QPI backup, routing and protocol layers of the underlying PCIe physical layer (and the appropriate PCIe interface circuit), which is possible that QPI -Protokollnachrichten be used on PCIe hardware. Thus, the QPI functionality such. As a support for coherent memory transactions are implemented on a PCIe interface circuit.