Advanced Micro Devices Corporation

Ati Technologies Ulc

Advanced Devices Inc.

Lianji Cheng

Philip Ng

Buheng Xu

Xiao Han

Qing Li

Dong Yu

An apparatus includes logic circuitry, such as an interrupt controller, that serially arbitrates among a plurality of incoming interrupt requests for a target device and produces a selected incoming interrupt request. The logic generates a message signaled interrupt (MSI) message for the target device based on the selected incoming interrupt request using a plurality of linked lookup tables, such as a hierarchy of LUTs that include data used to generate the MSI message. Associated methods are also presented.

Apparatus and methods for generating message signaled interrupts associated with peripheral components

An apparatus includes logic circuitry that selects a retag transaction identifier for an original transaction identifier of an incoming transaction request, based on a plurality of sub-groups of retag tracking data. Each sub-group of retag tracking data is associated with a corresponding sub-group of retag transaction identifiers in a group of retag transaction identifiers. The logic circuitry retags the incoming transaction request with the selected retag transaction identifier (ID) by replacing the original transaction identifier associated with the incoming transaction request and sends the retagged incoming transaction request to a target. A returned response is received from the target. The retag transaction ID in the returned response is removed and replaced with the original transaction ID before being sent as a reply to the requesting unit. Associated methods are also presented.

Apparatus and methods for managing outstanding transactions between one or more requesting units and a target unit

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Suzhou, China

Lianji Cheng