Lsi Corporation

Hal Computer Systems, Inc.

Chien Chen

Timothy Lawrence Canepa

Changyou Xu

Yang Liu

Nital P Patwa

Yizhi Lu

A method for processing a read sub-command in a secondary storage controller is disclosed. The method includes receiving the read sub-command from a primary storage controller; retrieving data in response to the read sub-command; utilizing a write request to write the retrieved data directly to a memory accessible by a host device; issuing an additional request to the same memory after the write request; receiving an indication of completion of the additional request; and reporting a sub-completion status to the primary storage controller.

Method to ensure data coherency in a scalable aggregate neighbor-device interface

A system and method providing ECC protection for all data block sizes for which a computer system supports store (ST) accesses includes an access control logic unit which converts store accesses for small data block (.ltoreq.64-bits) into read-modify (merge)-write accesses and a data merge logic unit which merges 64-bit data blocks retrieved by the load access with the small data block of the store access to create a new 64-bit data block. The data merge logic unit utilizes a merge code provided from a look-up table in a programmable logic array to perform the merging of the data blocks. An ECC generation logic unit processes the merged 64-bit data block, including the new small data block.

Merging data using a merge code from a look-up table and performing ECC

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Fremont, CA, United States of America

Chien Chen