Hanh Thi Hoang

US Patent:

20190243781, Aug 8, 2019

Filed:

Feb 8, 2018

Appl. No.:

15/892266

Inventors:

- San Jose CA, US
Darren Jue - Sunnyvale CA, US
Tao Yu - Campbell CA, US
John West - Erie CO, US
Hanh Hoang - Hayward CA, US
Ravi Sunkavalli - San Jose CA, US

Assignee:

Xilinx, Inc. - San Jose CA

International Classification:

G06F 12/1081

Abstract:

Examples herein describe techniques for providing a customizable direct memory access (DMA) interface which can permit user logic to change or control how DMA read and writes are performed. In one example, a DMA engine may be hardened (e.g., include circuitry formed from a semiconductor material) which prevents the DMA engine from being reconfigured like programmable logic. Instead of changing the DMA engine, the user logic can change or customize the DMA interface between the user logic and the DMA engine. In this way, the manner in which the DMA engine performs DMA write and reads can be changed by the user logic. In one example, the DMA engine includes a bypass mode of operation where descriptors associated with DMA queues are passed through the DMA engine and to the user logic.