Transaction info bypass for nodes coupled to an interconnect fabric

摘要

A shared resource within a module may be accessed by a request from an external requester. An external transaction request may be received from an external requester outside the module for access to the shared resource that includes control information, not all of which is needed to access the shared resource. The external transaction request may be modified to form a modified request by removing a portion of the locally unneeded control information and storing the unneeded portion of control information as an entry in a bypass buffer. A reply received from the shared resource may be modified by appending the stored portion of control information from the entry in the bypass buffer before sending the modified reply to the external requester.

主权项

1. A method of accessing a shared resource comprised within a module, the method comprising:
receiving an external transaction request from an external requester outside the module for access to the shared resource within the module, wherein the external transaction request includes control information; modifying the external transaction request to form a modified request by removing a portion of the control information; storing the removed portion of the control information as an entry in a bypass buffer; further modifying the modified external transaction request by attaching an indicative value corresponding to the entry within the bypass buffer where the corresponding removed portion of control information is stored; supplying the further modified external transaction request to the shared resource; receiving a reply to the further modified request from the shared resource; modifying the reply by appending the corresponding stored portion of control information from the entry in the bypass buffer; and sending the modified reply to the external requester.