Intel Corporation

Phanindra Mannava

Akhilesh Kumar

Aaron T Spink

Sanjay Dabral

Meenakshisundaram Chinthamani

Hari K Nagpal

David Stewart Dunning

Theodore Zale Schoenborn

Victor W Lee

Jeffrey R Wilcox

Naveen Cherukuri

Tim Frodsham

Ching-Tsun Chou

R Guru Prasadh

Sujoy Sen

Murugasamy K Nachimuthu

Ioannis T Schoinas

Srinivas Chennupaty

Robert J Safranek

Vivek Garg

Doddaballapur N Jayasimha

Suresh S Chittor

Mani Ayyar

Kiran A Padwekar

Seungjoon Park

Rajee S Ram

Srinand Venkatesan

Andalib Khan

Robert H Beers

Binata Bhattacharyya

Liang Yin

Brannon J Batson

Chandra P Joshi

Chung-Chi Wang

Stan Domen

Doddabaliapur Narasimha-Murthy Jayasimha

Systems and methods of managing a link provide for receiving a remote width capability during a link initialization, the remote width capability corresponding to a remote port. A link between a local port and the remote port is operated at a plurality of link widths in accordance with the remote width capability.

Dynamically modulating link width

Methods and apparatus relating to ring protocols and techniques are described. In one embodiment, a first agent generates a request to write to a cache line of a cache over a first ring of a computing platform. A second agent that receives the write request forwards it to a third agent over the first ring of the computing platform. In turn, a third agent (e.g., a home agent) receives data corresponding to the write request over a second, different ring of the computing platform and writes the data to the cache. Other embodiments are also disclosed.

Optimized ring protocols and techniques

In one embodiment, the present invention includes a processor that can generate data packets for transmission to an agent, where the processor can generate a data packet having a command portion including a first operation code to encode a transaction type for the data packet and a second operation code to encode a processor-specific operation. This second operation code can encode many different features such as an indication that the data packet is of a smaller size than a standard packet, in order to reduce bandwidth. This operation code can also identify an operation to be performed by a destination agent coupled to the agent. Other embodiments are described and claimed.

Reducing packet size in a communication protocol

Multiple initialization techniques for system and component in a point-to-point architecture are discussed. Consequently, the techniques allow for flexible system/socket layer parameters to be tailored to the needs of the platform, such as, desktop, mobile, small server, large server, etc., as well as the component types such as IA32/IPF processors, memory controllers, IO Hubs, etc. Furthermore, the techniques facilitate powering up with the correct set of POC values, hence, it avoids multiple warm resets and improves boot time. In one embodiment, registers to hold new values, such as, Configuration Values Driven during Reset (CVDR), and Configuration Values Captured during Reset (CVCR) may be eliminated. For example, the POC values could be from the following: Platform Input Clock to Core Clock Ratio, Enable/disable LT, Configurable Restart, Burn In Initialization Mode, Disable Hyper Threading, System BSP Socket Indication, and Platform Topology Index.

Method, system, and apparatus for system level initialization by conveying capabilities and identifiers of components

Generating a packet including multiple operation codes

In one embodiment, the present invention includes a method for associating and storing a code fragment for each cell of a table for a protocol specification in a semantic mapping corresponding to the table, and automatically generating a formal model for the protocol specification using the table and the semantic mapping. Other embodiments are described and claimed.

Methodology and tools for tabled-based protocol specification and model generation

A link layer system is provided. The link layer system a first link layer control module and a retry queue for storing a transmitted data packet. The retry control module is coupled to the first link layer control module, which directs the retry queue to discard the transmitted data packet when an acknowledgment bit is received by the first link layer control module.

Link level retry scheme

A proposal is discussed that facilitates exchanging parameters for a link layer that allows a variable number of parameters without changing a communication protocol. Likewise, the proposal allows for both components connected via the link to negotiate values for the parameters that are exchanged without a need for external agent intervention or redundancy.

Negotiable exchange of link layer functional parameters in electronic systems having components interconnected by a point-to-point network

Method and system for flexible and negotiable exchange of link layer functional parameters

A system and method for implementing a cache coherency protocol are described. The system includes a first caching agent to send a first cache request to a home agent. The system also includes the home agent including a queue to store the first cache request.

System and method for a 3-hop cache coherency protocol

A home agent allocates trackers to each of a plurality of caching agents, monitors each caching agent's usage of the allocated trackers, and determines whether a caching agent under-utilizes or over-utilizes them. In the case of under-utilization, the home agent retrieves at least one tracker from the allocation to the caching agent. In the case of over-utilization, the home agent allocates more trackers to the caching agent.

Dynamic allocation of home coherency engine tracker resources in link based computing system

Method, system, and apparatus for system level initialization

Growing community of inventors

Folsom, CA, United States of America

Phanindra Mannava