公开(公告)号：DE19522807A1

公开(公告)日：1996-02-15

申请号：DE19522807

申请日：1995-06-23

Applicant: IBM

Inventor： CASPER DANIEL FRANCIS ,  GLASSEN STEVEN GARDNER ,  HALMA MARTEN JAN ,  RYAN SANDRA KAY

IPC: G06F13/12 ,  G06F15/163

Abstract: These occur between a processing unit with a host processor and a host memory and one or more input and output units, each designated by a number that is part of the I/O instruction carried through one or more channels with the processing unit. The host memory has a control region containing the control data for the I/O units and these control data have a recognition mark for the operation to be carried out between the I/O unit and the processing unit and a mark (CHPID) for one or more channels.

公开(公告)号：DE3485606D1

公开(公告)日：1992-04-30

申请号：DE3485606

申请日：1984-01-17

Applicant: IBM

Inventor： BLOUNT FREDERICK THOMAS ,  CAPOWSKI ROBERT STANLEY ,  CASPER DANIEL FRANCIS ,  DELSONNO LAWRENCE RALPH ,  GELLER ROBERT FRANKLIN ,  KUSMISS JOSEPH MICHAEL ,  ZIMMERMAN TERRENCE KEITH

IPC: G06F13/12 ,  H04L29/02

公开(公告)号：ZA201301504B

公开(公告)日：2014-08-27

申请号：ZA201301504

申请日：2013-02-27

Applicant: IBM

Inventor： HATHORN ROGER ,  RICCI LOUIS ,  KALOS MATTHEW JOSEPH ,  RIEDY DALE ,  CANDELARIA SUSAN KAY ,  FLANAGAN JOHN ,  CARLSON SCOTT ,  YUDENFRIEND HARRY ,  CASPER DANIEL FRANCIS

IPC: G06F20060101

Abstract: A method of performing an input/output operation includes: generating by a channel subsystem at least one command message including one or more device command words (DCWs), at least one DCW including a data count and a suppress-length indication (SLI) configured to instruct a control unit whether to continue to perform the I/O operation in response to an incorrect length condition; forwarding the at least one command message to the control unit; receiving an incorrect length (IL) value from the control unit and storing an IL indicator in a subchannel-status word, the IL indicator representing the IL value, the IL value being a first IL value in response to a first SLI value and the data count not matching the amount of data required, the IL value being a second IL value in response to a second SLI value and the data count not matching the amount of data required.

公开(公告)号：GB2505592B

公开(公告)日：2014-08-06

申请号：GB201321241

申请日：2012-05-17

Applicant: IBM

Inventor： FLANAGAN JOHN ,  BUBB CLINTON ,  CASPER DANIEL FRANCIS

IPC: G06F13/38

Abstract: On embodiment includes a computer program product for performing a method including: obtaining information relating to an I/O operation at a channel subsystem in a host computer system; generating addressing information and forwarding the addressing information from at least one channel to a network interface between the channel subsystem and at least one I/O device, the addressing information specifying a location in a local channel memory; forwarding an I/O command message to the at least one I/O device via the network interface; responsive to the I/O command message, receiving a data transfer request from the network interface that includes the addressing information; responsive to receiving the data transfer request, accessing one of a plurality of address control words (ACWs), each ACW specifying an address of a location in a host computer memory; and routing the data transfer request to the host memory location specified in the ACW.

公开(公告)号：SI2593878T1

公开(公告)日：2014-04-30

申请号：SI201230021

申请日：2012-04-11

Applicant: IBM

Inventor： HATHORN ROGER ,  FLANAGAN JOHN ,  RICCI LOUIS WILLIAM ,  CARLSON SCOTT ,  KALOS MATTHEW JOSEPH ,  YUDENFRIEND HARRY ,  RIEDY DALE ,  CASPER DANIEL FRANCIS

IPC: G06F13/00

公开(公告)号：PT2593878E

公开(公告)日：2014-03-07

申请号：PT12716322

申请日：2012-04-11

Applicant: IBM

Inventor： YUDENFRIEND HARRY ,  HATHORN ROGER ,  FLANAGAN JOHN ,  RICCI LOUIS WILLIAM ,  CARLSON SCOTT ,  KALOS MATTHEW JOSEPH ,  RIEDY DALE ,  CASPER DANIEL FRANCIS

IPC: G06F13/42

公开(公告)号：SG194172A1

公开(公告)日：2013-12-30

申请号：SG2013075981

申请日：2012-04-11

Applicant: IBM

Inventor： HATHORN ROGER ,  FLANAGAN JOHN ,  RICCI LOUIS WILLIAM ,  CARLSON SCOTT ,  KALOS MATTHEW JOSEPH ,  YUDENFRIEND HARRY ,  RIEDY DALE ,  CASPER DANIEL FRANCIS

Abstract: A computer program product is provided for performing: sending, by a channel subsystem, a process login (PRLI) request message to the control unit that indicates whether the channel subsystem supports bi-directional data transfer; receiving a PRLI response message from the control unit that indicates whether the control unit supports bi-directional data transfer; gathering a plurality of commands, at least one which specifies an input data transfer and at least one specifying an output data transfer; sending at least one output data message to the control unit including output data to be transferred to the control unit, the output data message associated with the at least one of the plurality of commands specifying an output data transfer; and receiving at least one input message from the control unit including input data to be stored in a main storage of the host computer system.

公开(公告)号：MX2013011408A

公开(公告)日：2013-12-09

申请号：MX2013011408

申请日：2012-04-11

Applicant: IBM

Inventor： CARLSON SCOTT ,  FLANAGAN JOHN ,  RIEDY DALE ,  HATHORN ROGER ,  RICCI LOUIS ,  YUDENFRIEND HARRY ,  KALOS MATTHEW JOSEPH ,  CASPER DANIEL FRANCIS

IPC: F01D5/28 ,  B29C70/86 ,  F03D1/06 ,  G06F13/42

Abstract: Se proporciona un producto de programa de computadora para realizar: envío, por un subsistema de canal, de un mensaje de solicitud de entrada en el sistema de proceso (PRLI) a la unidad de control que indica si el subsistema de canal soporta transferencia de datos bidireccional; recibir un mensaje de respuesta PRLI de la unidad de control que indica si la unidad de control soporta transferencia de datos bidireccional; recolectar una pluralidad de comandos, al menos unos de los cuales especifica una transferencia de datos de entrada y al menos uno que especifica una transferencia de datos de salida, enviar al menos un mensaje de datos de salida a la unidad de control que incluye datos de salida a transferir a la unidad de control, el mensaje de datos de salida asociado con al menos una de la pluralidad de comandos que especifica una transferencia de datos de salida; y recibir al menos un mensaje de entrada de la unidad de control que incluye datos de entrada para guardar en un almacenamiento principal del sistema de computadora anfitrión.

公开(公告)号：GB2491440B

公开(公告)日：2013-05-15

申请号：GB201206684

申请日：2012-04-17

Applicant: IBM

Inventor： CASPER DANIEL FRANCIS ,  FLANAGAN JOHN R ,  BUBB CLINTON ,  BENDER CARL ALFRED

IPC: G06F13/12 ,  H04L69/40

Abstract: A computer program product is provided for performing input/output (I/O) processing. The computer program product is configured to perform: generating and storing in local channel memory at least one address control word (ACW) specifying one or more host memory locations for data transfer and including a data discard field; generating an address control structure specifying a local channel memory location of a corresponding ACW; receiving one or more data transfer requests from a network interface that each corresponding address control structure information; accessing an ACW and routing the data transfer request to a host memory location specified in the ACW; and responsive to encountering an error during at least one of the accessing and the routing, discarding the one or more data transfer requests and setting the data discard field to a value configured to instruct a channel to discard any subsequent data transfer requests associated with the ACW.

公开(公告)号：GB2491437B

公开(公告)日：2013-05-15

申请号：GB201206681

申请日：2012-04-17

Applicant: IBM

Inventor： CASPER DANIEL FRANCIS ,  FLANAGAN JOHN R ,  BUBB CLINTON

IPC: G06F13/12 ,  G06F13/38