International Business Machines Corporation

Caryl A Thorn

Gregory Michael Nordstrom

Martin W Sachs

Fernando A Luiz

Robert Bryan Cook

Salvatore A Calta

A method and apparatus for performing direct memory address (DMA) operations between a requestor and responder device by prestoring, for each device, a logical token and offset value which is recognizable by the device as an indicia to identify one or more local memory addresses within the device, and initiating a DMA operation within the requestor device by the requestor device transferring the token and offset value to the responder device, the responder device identifying a responder device local memory address by translation of the token and offset value, and the responder device accessing the identified responder local memory address for data transfer, associated with the token and offset, and the requestor device identifying a requestor device local memory address for completing the data transfer.

Growing community of inventors

Rochester, MN, United States of America

Caryl A Thorn