System and method for direct memory access from host without...

Details System and method for direct memory access from host without... System and method for direct memory access from host without...

2006-12-12

2006-12-12

Peyton, Tammara (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Direct memory accessing

C710S027000, C710S074000, C710S305000, C710S306000, C710S036000, C713S001000, C713S002000

Reexamination Certificate

active

07149823

ABSTRACT:
A method and system for allowing a host device (e.g., server) to perform programmed direct accesses to peripheral memory (e.g., flash) located on a peripheral device (e.g., HBA), without the assistance of a microprocessor located on the peripheral device. In a preferred embodiment, new host registers are implemented within controller circuitry of the peripheral device, the host registers being configured to be recognized by host software executed by host. The host device reads and writes to the host registers, which causes appropriate controller hardware to access the peripheral nonvolatile memory accordingly. By creating and implementing the new host registers, an enhanced controller is created that allows a host device to directly access peripheral memory, without peripheral processor assistance.

REFERENCES:
patent: 5918028 (1999-06-01), Silverthorn et al.
patent: 6480933 (2002-11-01), Cargemel et al.
patent: 6519670 (2003-02-01), Meiyappan
patent: 2003/0131166 (2003-07-01), Utsunomiya et al.
patent: 2004/0230727 (2004-11-01), Chen et al.

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