Rafael E Montalvo

US Patent:

53676432, Nov 22, 1994

Filed:

Feb 6, 1991

Appl. No.:

7/651894

Inventors:

Paul Chang - Peekskill NY
Gary S. Delp - Yorktown Heights NY
Hanafy E. Meleis - Yorktown Heights NY
Rafael M. Montalvo - Yorktown Heights NY
David I. Seidman - New York NY
Ahmed N. Tantawy - Yorktown Heights NY
Dominick A. Zumbo - White Plains NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1300

US Classification:

395325

Abstract:

A generic high bandwidth adapter providing a unified architecture for data communications between buses, channels, processors, switch fabrics and/or communication networks. Data is carried by data stream packets of variable lengths, and each packet includes a header control information portion required by communication protocols used to mediate the information exchange, and normally a data portion for the data which is to be communicated. The generic high bandwidth adapter comprises a processor subsystem including a processor for processing the header control information portions of data packets. The processor has access to data packets stored in a packet memory which stores data packets arriving at four generic adapter input/output ports. The packet memory is segmented into a plurality of buffers, and each data packet is stored in one or more buffers as required by the length thereof. A generic adapter manager is provided for performing and synchronizing generic adapter management functions, including implementing data structures in the packet memory by organizing data packets in buffers, and organizing data packets into queues for processing by the processor subsystem or transfer to or from generic adapter input/output ports.

US Patent:

56340150, May 27, 1997

Filed:

Oct 4, 1994

Appl. No.:

8/317894

Inventors:

Paul Chang - Peekskill NY
Gary S. Delp - Yorktown Heights NY
Hanafy E.-S. Meleis - Yorktown Heights NY
Rafael M. Montalvo - Yorktown Heights NY
David I. Seidman - New York NY
Ahmed N.-E.-D. Tantawy - Yorktown Heights NY
Dominick A. Zumbo - White Plains NY

Assignee:

IBM Corporation - Armonk NY

International Classification:

G06F 1300

US Classification:

395309

Abstract:

A generic high bandwidth adapter providing a unified architecture for data communications between buses, channels, processors, switch fabrics and/or communication networks. Data is carried by data stream packets of variable lengths, and each packet includes a header control information portion required by communication protocols used to mediate the information exchange, and normally a data portion for the data which is to be communicated. A packet memory stores data packets arriving at a plurality of generic adapter input/output ports. The packet memory is segmented into a plurality of buffers, and each data packet is stored in one or more buffers as required by the length thereof. A generic adapter manager is provided for performing and synchronizing generic adapter management functions, including implementing data structures in the packet memory by organizing data packets in buffers, and organizing data packets into queues for processing by the processor subsystem or transfer to or from generic adapter input/output ports. The generic adapter manager prepares future response to anticipated requests for communications services which are functions of the current requests for communication services, such as preparing a response for an anticipated request for a next buffer by a current request for a receipt of data.