公开(公告)号：US20240113914A1

公开(公告)日：2024-04-04

申请号：US17937262

申请日：2022-09-30

Applicant: Advanced Micro Devices, Inc.

Inventor： Sriram Sambamurthy ,  Indrani Paul ,  David Boardman Kramer ,  Madhusudan Chilakam

IPC: H04L12/46 ,  H04L49/109

CPC classification number: H04L12/4616 ,  H04L49/109

Abstract: An apparatus and method for efficiently performing power management for multiple clients of a semiconductor chip that supports remote manageability. In various implementations, a network interface receives a packet, and sends at least an indication of the packet to a manageability processing circuitry (MPC) of a processing node with multiple clients for processing tasks. The MPC determines whether a client or itself is a destination needed to process the packet. If the destination is the MPC, then packet processing is done by the MPC without involvement from the clients, which can be in an idle state. For example, the MPC can process a remote manageability packet requesting diagnostic information from one or more clients of the processing node. The network interface and the MPC use a sideband communication channel for data transmission, which foregoes lane training for further reduction in latency and power consumption.