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    Moving blocks of data between main memory and storage class memory
    41.
    发明专利
    Moving blocks of data between main memory and storage class memory 未知

    公开(公告)号：GB2505844A

    公开(公告)日：2014-03-12

    申请号：GB201400049

    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 ,  G06F12/02 ,  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 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; performing for each MSB of one or more of the MSBs comprising a flags field having a first value, a method comprising: based on the operation code field in an obtained move specification block, determining whether the move specification block is configured to move blocks of data to main storage from storage class memory or to storage class memory from main storage, wherein a size of a block of data is determined by the block size field of the obtained MSB; and moving the blocks of data between the main storage and the storage class memory, wherein an address of a main storage location used for the move is obtained using the main storage address field and an address of the storage class memory used for the move is obtained using the storage class memory address field.

    FACILITATING TRANSPORT MODE INPUT/OUTPUT OPERATIONS BETWEEN A CHANNEL SUBSYSTEM AND INPUT/OUTPUT DEVICES
    45.
    发明专利
    FACILITATING TRANSPORT MODE INPUT/OUTPUT OPERATIONS BETWEEN A CHANNEL SUBSYSTEM AND INPUT/OUTPUT DEVICES 未知

    公开(公告)号：CA2819159A1

    公开(公告)日：2013-01-03

    申请号：CA2819159

    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: G06F13/42

    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.

    USING EXTENDED ASYNCHRONOUS DATA MOVER INDIRECT DATA ADDRESS WORDS
    46.
    发明专利
    USING EXTENDED ASYNCHRONOUS DATA MOVER INDIRECT DATA ADDRESS WORDS 未知

    公开(公告)号：CA2819160A1

    公开(公告)日：2012-12-13

    申请号：CA2819160

    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.

    DATA RETURNED RESPONSIVE TO EXECUTING A START SUBCHANNEL INSTRUCTION
    50.
    发明专利
    DATA RETURNED RESPONSIVE TO EXECUTING A START SUBCHANNEL INSTRUCTION 未知

    公开(公告)号：CA2819161C

    公开(公告)日：2019-12-03

    申请号：CA2819161

    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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