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    COMPUTER COMMAND AND RESPONSE FOR DETERMINING THE STATE OF AN I/O OPERATION
    21.
    发明专利
    COMPUTER COMMAND AND RESPONSE FOR DETERMINING THE STATE OF AN I/O OPERATION 未知

    公开(公告)号：CA2704136C

    公开(公告)日：2017-01-03

    申请号：CA2704136

    申请日：2009-02-09

    Applicant: IBM

    Inventor： CASPER DANIEL ,  CARLSON SCOTT ,  FLANAGAN JOHN ,  HATHORN ROGER ,  HUANG CATHERINE ,  KALOS MATTHEW ,  RICCI LOUIS ,  RIEDY DALE ,  SITTMANN GUSTAV III ,  NJOKU UGOCHUKWU ,  YUDENFRIEND HARRY

    IPC: G06F13/12

    Abstract: A state of an input/output (I/O) operation in an I/O processing system is determined. A request for performing the I/O operation is received from an I/O operating system at a channel subsystem and forwarded to a control unit controlling an I/O device for executing the I/O operation. After a predetermined amount of time passes without receiving indication from the control unit that the I/O operation is completed, an interrogation request is received at the channel subsystem from the I/O operating system for determining the state of the I/O operation. An interrogation command is sent from the channel subsystem to the control unit. A response is received from the control unit, the response indicates a state of the I/O device executing the I/O operation, a state of the control unit controlling the I/O device executing the I/O operation, and the state of the I/O operation being executed.

    Using extended asynchronous data mover indirect data address words
    22.
    发明专利
    Using extended asynchronous data mover indirect data address words 未知

    公开(公告)号：AU2012266572B2

    公开(公告)日：2015-09-10

    申请号：AU2012266572

    申请日：2012-05-25

    Applicant: IBM

    Inventor： OAKES KENNETH JAMES ,  SUTTON PETER GRIMM ,  DRIEVER PETER DANA ,  YUDENFRIEND HARRY ,  GLASSEN STEVEN GARDNER

    IPC: G06F13/12

    Abstract: Provided is a method of executing a Start Subchannel instruction in a computing environment comprising main storage and storage class memory, said method comprising: responsive to determining that a subchannel identified by the Start Subchannel instruction is an Asynchronous Data Mover (ADM) subchannel, performing: obtaining an operation request block from main storage, the operation request block comprising an address of an operation block;based on the address of the operation block, obtaining the operation block from main storage, the operation block consisting of a request block, a response block, and one or more move specification blocks (MSBs), wherein the request block comprises an MSB count field having a value indicating the number of one or more MSBs included in and referenced by the operation block, wherein the response block is configured to hold exception conditions, wherein each move specification block is configured to include an operation code field, a block count field, a main storage address field, a storage class memory address field, a block size field and a flags field; for each MSB block of the operation block, obtaining a move specification block of the one or more move specification blocks, and: determining based on the flags field that the obtained move specification block is configured to obtain a list of one or more indirect data address words, the list of one or more indirect data address words located at a first main storage address of the main storage address field of the obtained MSB;for each block of data specified by the obtained MSB, obtaining from the list of one or more indirect data address words a second main storage address, wherein a number of blocks and a block size are determined based on the block count field and the block size field of the obtained MSB;determining based on an operation code of the operation code field in the obtained move specification block that the obtained move specification block is configured to move blocks of data; and based on the obtained move specification block, moving each block of data between the main storage and the storage class memory, wherein an address of a main storage location used for the move of a block of data is obtained using a respective second main storage address and an address of the storage class memory used for the move is obtained using the storage class memory address field.

    Granting permissions for data access in a heterogeneous computing environment
    28.
    发明专利
    Granting permissions for data access in a heterogeneous computing environment 未知

    公开(公告)号：GB2496245A

    公开(公告)日：2013-05-08

    申请号：GB201216252

    申请日：2012-09-12

    Applicant: IBM

    Inventor： KREUZENSTEIN ROBERT KARL ,  YUDENFRIEND HARRY ,  KNIGHT JOSHUA WILSON ,  RUDDY ALAN JAMES ,  LEE JOHN ,  THOMPSON JOHN GLENN ,  CHAMBLISS DAVID DARDEN

    IPC: G06F21/62 ,  G06F3/06

    Abstract: A method of accessing data in a heterogeneous computing system, which may be operating in a mainframe arrangement, includes: receiving, in a first computing system 105 running a first operating system, a request from a second computing system 120 to access a data set 115, where the second computing system has a second operating system dissimilar to the first. The first system then prepares the data set for access by the second system, determines certain characteristics of the data set, passing them to the second system, and sets permissions for the second computing system to access the data set. This allows servers running operating systems that do not have access control mechanisms to use data that require such mechanisms to be used. The permissions may be rescinded following use of the data set.

    Data returned responsive to executing a start subchannel instruction
    29.
    发明专利
    Data returned responsive to executing a start subchannel instruction 未知

    公开(公告)号：AU2012266573A1

    公开(公告)日：2013-05-02

    申请号：AU2012266573

    申请日：2012-05-25

    Applicant: IBM

    Inventor： SZWED PETER KENNETH ,  OAKES KENNETH JAMES ,  SUTTON PETER GRIMM ,  DRIEVER PETER DANA ,  YUDENFRIEND HARRY ,  GLASSEN STEVEN GARDNER

    IPC: G06F13/12 ,  G06F13/28

    Abstract: Provided is a method of executing a Start Subchannel instruction in a computing environment comprising main storage and storage class memory, said method comprising: responsive to determining that a subchannel identified by the Start Subchannel instruction is an Asynchronous Data Mover (ADM) subchannel, performing: obtaining an operation request block from main storage, the operation request block comprising an address of an operation block; based on the address of the operation block, obtaining the operation block from main storage, the operation block consisting of a request block, a response block, and one or more first move specification blocks (MSBs), wherein the request block comprises an MSB count field having a value indicating the number of one or more MSBs included in and referenced by the operation block, wherein the response block is configured to hold exception conditions, wherein each move specification block is configured to include an operation code field, a block count field, a main storage address field for addressing main storage, a storage class memory address field for addressing storage class memory, a block size field and a flags field; obtaining a move specification block of the one or more move specification blocks; determining based on the operation code in the obtained move specification block an operation that the obtained move specification block is configured to perform on blocks of storage class memory; based on the move specification block, initiating the operation on the blocks of storage class memory associated with a storage class memory address of the storage class memory address field; and responsive to at least initiating the operation and encountering an exception condition, storing information within the response block, wherein the response block comprises an exception flags field, a field validity field, a failing MSB address field, a failing indirect data address word (AIDAW) address field, a failing main storage address field and a failing storage class memory address field, the information relating to one or more exceptions resulting from the operation, wherein the one or more exceptions are related to at least one of: main storage associated with a main storage address of the main storage address field, storage class memory associated with a storage class memory address of the storage class memory address field, or the obtained move specification block, and wherein the information includes an indication of an exception and additional information relating to the exception, the additional information specifying one or more address exceptions.

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