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US 2013/0086398 A1Published application
Managing sideband segments in on-die system fabric
AssigneeIntel Corporation
InventorsHai Ming Khor, Kay Keat Khoo, Vui Yong Vy Liew, Bhushan Vaidya
Life of this patent
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Abstract
Methods and apparatus for managing sideband segments in an On-Die System Fabric (OSF) are described. In one embodiment, a sideband OSF includes a plurality of segments that may be reset or powered down independently after power management logic determines that in progress messages have been handled and future messages to the segment being reset or powered down will be blocked. Other embodiments are also disclosed.
Claims20
An integrated circuit comprising:
- a sideband On-die System Fabric (OSF) to couple a first agent and a second agent, wherein the sideband OSF is to allow the first agent and the second agent to communicate out-of-band information via one or more routers;
- and
- power management logic to initiate a request to reset a segment of a plurality of segments of the sideband OSF,
- wherein the power management logic is to cause the segment to reset in response to an acknowledgement from one or more agents in the segment of the plurality of segments that the one or more agents have handled all in-progress posted messages.
1 more element
A method comprising:
- routing one or more out-of-bank messages between a first agent and a second agent via a sideband On-die System Fabric (OSF);
- and
- initiating a request to reset a segment of a plurality of segments of the sideband OSF,
- wherein the segment is to reset in response to an acknowledgement from one or more agents in the segment of the plurality of segments that the one or more agents have handled all in-progress posted messages.
1 more element
A system comprising:
- an input/output (IO) device;
- a sideband On-die System Fabric (OSF) to couple a processor to the IO device;
- and
- power management logic to initiate a request to reset a segment of a plurality of segments of the sideband OSF,
- wherein the power management logic is to cause the segment to reset in response to an acknowledgement from one or more agents in the segment of the plurality of segments that the one or more agents have handled all in-progress posted messages.
2 more elements
Dependencies are inferred from the claim text.