Method and Apparatus to Enable CPU Host-Unaware Dynamic FPGA Reconfiguration

The present disclosure is directed to enabling operation of a field programmable gate array (FPGA) while preventing application quiescence during FPGA reconfiguration. In embodiments of the disclosure, proxy agent firmware may enable downstream transactions (e.g., PCIe transactions) to be serviced d...

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Bibliographic Details
Main Authors Wallichs, Gary, Gupta, Ashish, Pal, Rahul, Ravipalli, Sreedhar
Format Patent
LanguageEnglish
Published 26.01.2023
Subjects
BASIC ELECTRONIC CIRCUITRY
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
PHYSICS
PULSE TECHNIQUE
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Summary:The present disclosure is directed to enabling operation of a field programmable gate array (FPGA) while preventing application quiescence during FPGA reconfiguration. In embodiments of the disclosure, proxy agent firmware may enable downstream transactions (e.g., PCIe transactions) to be serviced during reconfiguration of the FPGA. Programmable logic states (e.g., PCIe configuration states or memory-mapped input/output (MMIO) states) are saved in memory and maintained by the proxy agent (via a management controller running the proxy agent). Once the FPGA is reconfigured, the state may be restored to the FPGA's programmable logic, and the FPGA may operate on the current state of the transactions.
Bibliography:Application Number: US202217956555