公开(公告)号：US4445176A

公开(公告)日：1984-04-24

申请号：US107806

申请日：1979-12-28

申请人： John L. Burk ,  Roger L. Cormier ,  Michael H. Hartung ,  Ray A. Larner ,  Donald J. Lucas ,  Kenneth R. Lynch ,  Brian B. Moore ,  Howard L. Page ,  David H. Wansor ,  Carl Zeitler, Jr.

发明人： John L. Burk ,  Roger L. Cormier ,  Michael H. Hartung ,  Ray A. Larner ,  Donald J. Lucas ,  Kenneth R. Lynch ,  Brian B. Moore ,  Howard L. Page ,  David H. Wansor ,  Carl Zeitler, Jr.

IPC分类号： G06F13/00 ,  G06F13/12 ,  G06F15/167

CPC分类号： G06F15/167 ,  G06F13/122

摘要： Secondary storage subsystems exchange messages and data with host data processing systems and also forward messages between host systems. Host systems thereby communicate with each other in addition to having access to data in subsystem storage. Access to subsystem storage is initiated by a "request" sent from a host to the subsystem. Each request is a message containing an array of one or more commands, each command specifying a transfer of data or a control function to be performed by the subsystem. A subsystem may process more than one request at a time. It also may process the commands in a request in an arbitrary sequence suited to the availability of subsystem resources and data links to host systems. After all commands in a request have been processed the subsystem transmits an associated "completion" message to the host system which originated the request. The completion message indicates the status of completion or abnormal termination of each command in the associated request. An "adapter" processor associated with each host and subsystem operates on an asynchronous basis to transfer messages and data relative to the associated host or subsystem. One or more processing "engines" in each adapter communicates with one or more CPU's in the associated host or subsystem through an associated "adapter store". A portion of each adapter store is used as a buffer pool for constructing "subchannel control spaces" to control transers of messages and data. Elements of each subchannel control space are returned to free status as soon as they are not needed for sustaining associated transfers.

摘要翻译： 辅助存储子系统与主机数据处理系统交换消息和数据，并在主机系统之间转发消息。 因此，主机系统除了能够访问子系统存储器中的数据之外还相互通信。 通过从主机发送到子系统的“请求”启动对子系统存储的访问。 每个请求是包含一个或多个命令的数组的消息，每个命令指定要由子系统执行的数据传送或控制功能。 子系统可以一次处理多个请求。 它还可以以适合于子系统资源的可用性和到主机系统的数据链路的任意顺序处理请求中的命令。 在处理请求中的所有命令之后，子系统向发起请求的主机系统发送关联的“完成”消息。 完成消息指示相关请求中的每个命令的完成状态或异常终止。 与每个主机和子系统相关联的“适配器”处理器在异步的基础上操作以相对于相关联的主机或子系统传送消息和数据。 每个适配器中的一个或多个处理“引擎”通过相关联的“适配器存储”与相关主机或子系统中的一个或多个CPU进行通信。 每个适配器存储的一部分用作缓冲池，用于构建“子信道控制空间”来控制消息和数据的传输。 每个子通道控制空间的元素一旦不需要维持相关的传输就返回到空闲状态。

公开(公告)号：US5107489A

公开(公告)日：1992-04-21

申请号：US429267

申请日：1989-10-30

申请人： Paul J. Brown ,  Joseph C. Elliott ,  Peter A. Franaszek ,  Karl H. Hoppe ,  Kenneth R. Lynch ,  Martin W. Sachs ,  Leon Skarshinski

发明人： Paul J. Brown ,  Joseph C. Elliott ,  Peter A. Franaszek ,  Karl H. Hoppe ,  Kenneth R. Lynch ,  Martin W. Sachs ,  Leon Skarshinski

IPC分类号： H04L12/56

CPC分类号： H04L49/253 ,  H04L49/101 ,  H04L49/254

摘要： A dynamic switch and its protocol for establishing dynamic connections in a link by the use of frames, each frame having an identification of the source of the frame, an identification of the destination of the frame for the requested connection, and link controls to maintain, initiate or terminate a connection between the source and the destination. The frames are bounded by a start of frame delimiter and an end of frame delimiter which may also act as a connect link control and a disconnect link control, respectively, and the connections are made through the dynamic switch having dynamic-switch ports. The state of a dynamic-switch port is changed dependent on its present state, the dynamic connection requested, and the direction and type of frames passing through the dynamic-switch port.

公开(公告)号：US5151977A

公开(公告)日：1992-09-29

申请号：US575923

申请日：1990-08-31

申请人： Kenneth J. Fredericks ,  Kenneth R. Lynch

发明人： Kenneth J. Fredericks ,  Kenneth R. Lynch

IPC分类号： G06F13/00 ,  G06F13/12 ,  G06F13/40 ,  H04L7/00 ,  H04L7/04

CPC分类号： H04L7/0083 ,  G06F13/122 ,  G06F13/4022 ,  H04L2007/045

摘要： A link-level facility for managing the transmission of frames and continuous sequences of control characters over a link. The link-level facility includes a state machine which has a first state for allowing transmission of a frame over the link where a link-level facility at the other end of the link indicates that the link has a frame-transmitting status, and a second state for preventing the transmission of frames over the link when the link-level facility at the other end of the link has indicated that the link has a non-frame-transmitting status. The link-level facilitates signal the status of the link by means of continuous sequences of special characters intermediate frames transmitted over the link such that synchronism is maintained. The first state includes an inactive state and a working state, and the second state includes a link-failure state, and connection-recovery state and an off-line state.

公开(公告)号：US4386400A

公开(公告)日：1983-05-31

申请号：US151048

申请日：1980-05-19

申请人： Bernard Cope ,  Kenneth R. Lynch ,  Daniel H. O'Donnell ,  John T. Rodell ,  William W. Turechek ,  Robert M. Unterberger

发明人： Bernard Cope ,  Kenneth R. Lynch ,  Daniel H. O'Donnell ,  John T. Rodell ,  William W. Turechek ,  Robert M. Unterberger

IPC分类号： G06F9/445 ,  G06F9/06

CPC分类号： G06F9/4403

摘要： A central processor through an asynchronous service processor, selectively resets an input/output channel designated in an instruction called Clear Channel that is executed by the central processor. As part of the execution of this instruction, the service processor also communicates a reset signal to the peripheral equipment associated with that channel in case the designated channel is malfunctioning and cannot relay a reset signal normally to the peripheral equipment associated with the designated channel. The reset signal for the peripheral equipment is supplied through a connection between the service processor and particular lines in I/O interface cables of that channel. Programming routines that use the Clear Channel instruction are designed to preserve the integrity of data held by peripheral equipment that is associted with two channels when the peripheral equipment has exclusive affiliations with the designated channel. Other systems that are eligible to communicate with the affiliated equipment are conditioned to a quiescent state before the reset operation is carried out, and are kept in that state until the affiliations are re-established.

摘要翻译： 通过异步服务处理器的中央处理器选择性地复位由中央处理器执行的称为清除通道的指令中指定的输入/输出通道。 作为执行该指令的一部分，服务处理器还在指定的通道发生故障的情况下将复位信号传送到与该通道相关联的外围设备，并且不能将复位信号正常地中继到与指定通道相关联的外围设备。 外围设备的复位信号通过服务处理器和该通道的I / O接口电缆中的特定线路之间的连接来提供。 使用清除通道指令的编程程序被设计为当外围设备与指定通道独占关联时，保留与两个通道相关联的外围设备保持的数据的完整性。 有资格与附属设备进行通信的其他系统在复位操作执行之前处于静止状态，并保持在该状态，直到关联重新建立为止。

公开(公告)号：US5423006A

公开(公告)日：1995-06-06

申请号：US86390

申请日：1993-06-30

申请人： Paul J. Brown ,  Joseph C. Elliott ,  Karl H. Hoppe ,  Kenneth R. Lynch ,  Martin W. Sachs

发明人： Paul J. Brown ,  Joseph C. Elliott ,  Karl H. Hoppe ,  Kenneth R. Lynch ,  Martin W. Sachs

IPC分类号： G06F13/14 ,  G06F13/40 ,  H04J3/24

CPC分类号： G06F13/4022

摘要： A computer I/O system which includes a dynamic switch having a plurality of ports and a plurality of link-level facilities, with each link-level facility being attached to an individual one of the ports. Whenever the state of a port or its attached link-level facility is changed in such a way that the attached link-level facility's ability to communicate with another link-level facility might be affected, this fact is recognized by a dynamic switch control unit which causes a state change notification (SCN) frame to be transmitted to all other link-level facilities which might be affected. The link-level facilities receiving such a state change notification then determine if any of the associations or potential associations with the link-level facility which caused the state change notification are affected.

摘要翻译： 一种计算机I / O系统，其包括具有多个端口和多个链路级设施的动态交换机，其中每个链路级设施附加到单个端口中的一个。 每当端口状态或其连接的链路级设施以这样的方式改变时，连接级别设施与另一链路级设施通信的能力可能受到影响，则该事实由动态切换控制单元识别 导致状态改变通知（SCN）帧被发送到可能受影响的所有其他链路级设施。 接收到这种状态改变通知的链路级设施然后确定是否影响与导致状态改变通知的链路级设施的任何关联或潜在关联。

公开(公告)号：US4970640A

公开(公告)日：1990-11-13

申请号：US251969

申请日：1988-09-26

申请人： Brent C. Beardsley ,  Eugene P. Hefferon ,  Kenneth R. Lynch ,  Stephen W. Schimke ,  Lloyd R. Shipman, Jr. ,  Susan M. Wethington

发明人： Brent C. Beardsley ,  Eugene P. Hefferon ,  Kenneth R. Lynch ,  Stephen W. Schimke ,  Lloyd R. Shipman, Jr. ,  Susan M. Wethington

IPC分类号： G06F11/14 ,  G06F11/20

CPC分类号： G06F11/2005 ,  G06F11/142 ,  G06F11/20

摘要： A data processing system includes a plurality of host systems and peripheral subsystems, particularly data storage subsystems. Each of the data storage subsystems includes a plurality of control units attaching a plurality of data storage devices such as direct access storage devices (DASD) for storing data on behalf of the various host systems. Each of the control units have a separate storage path for accessing the peripheral data storage devices using dynamic pathing. The storage paths can be clustered into power clusters. Maintenance personnel acting through maintenance panels on either the control units or the peripheral data storage devices activate the subsystem to request reconfiguration of the subsystem from all of the host systems connected top the subsystem. The host systems can honor the request or reject it based upon diverse criteria. Upon each of the host systems approving the reconfiguration, the subsystem 13 is reconfigured for maintenance purposes. Upon completion of the maintenance procedures, a second reconfiguration request is sent to the host systems for causing quiesce devices to resume normal operations.

摘要翻译： 数据处理系统包括多个主机系统和外围子系统，特别是数据存储子系统。 每个数据存储子系统包括多个控制单元，其附接多个数据存储设备，例如用于代表各种主机系统存储数据的直接存取存储设备（DASD）。 每个控制单元具有用于使用动态路径访问外围数据存储设备的单独的存储路径。 存储路径可以集群到功率集群中。 维护人员通过控制单元或外围数据存储设备上的维护面板激活子系统，以从子系统顶部的所有主机系统中请求重新配置子系统。 主机系统可以根据不同的标准来满足请求或拒绝它。 在批准重新配置的每个主机系统中，子系统13被重新配置用于维护目的。 在完成维护过程之后，向主机系统发送第二重新配置请求，以使静止设备恢复正常操作。

公开(公告)号：US5450073A

公开(公告)日：1995-09-12

申请号：US178489

申请日：1994-01-06

申请人： Paul J. Brown ,  Joseph C. Elliott ,  Bernhard Laubli ,  Kenneth R. Lynch ,  William F. Micka

发明人： Paul J. Brown ,  Joseph C. Elliott ,  Bernhard Laubli ,  Kenneth R. Lynch ,  William F. Micka

IPC分类号： G06F1/26 ,  H04Q1/00

CPC分类号： G06F1/26 ,  Y10T307/477 ,  Y10T307/753

摘要： A mechanism for controlling the powering-on and powering-off of control units in a data processing system having a plurality of channels, a plurality of control units, and a communications network of links for linking the channels to the control units. Each control unit includes a power-control table for recording power-control allegiance of the control unit to the channels. Where a control unit receives a power-on command from a channel, it records the identity of the channel in its power-control table. When a channel orders a control unit to power-off, the control unit checks to see if it owes power-control allegiance to the ordering channel. If it does, the control unit deletes the identity from its power-control table. The control unit will not power-off unless its power-control table is empty, indicating that it does not owe allegiance to any other channel.

摘要翻译： 一种用于控制具有多个通道的数据处理系统中的控制单元的通电和断电的机构，多个控制单元和用于将通道链接到控制单元的通信通信网络。 每个控制单元包括用于将控制单元的功率控制效用记录到通道的功率控制表。 在控制单元从信道接收上电命令的情况下，在其功率控制表中记录通道的标识。 当一个通道命令一个控制单元断电时，控制单元检查它是否对功率控制效忠于订购通道。 如果是，则控制单元从其功率控制表中删除身份。 除非控制单元的电源控制表为空，否则控制单元将不会断电，表示不对其他通道造成效忠。

公开(公告)号：US5392425A

公开(公告)日：1995-02-21

申请号：US290449

申请日：1994-08-15

申请人： Joseph C. Elliott ,  Kenneth R. Lynch ,  Martin W. Sachs ,  John H. Sorg, Jr.

发明人： Joseph C. Elliott ,  Kenneth R. Lynch ,  Martin W. Sachs ,  John H. Sorg, Jr.

IPC分类号： G06F11/14 ,  G06F11/00

CPC分类号： G06F11/141

摘要： Retrying a command from a CCW in a data processing I/O system having a channel connected to a control unit in which the channel detects an error condition and requests the control unit to retry the current command of an I/O operation. The control unit then determines if the requested retry can be accomplished, and, if it can, sends a response back to the channel requesting the channel to initiate a retry. After receiving the response, the channel checks to determine if conditions are still present which allow a retry, and if they are, executes the current command to perform the retry. If the control unit determines that a retry cannot be accomplished, the control unit has the option to perform a unit check procedure. If the control unit determines that neither a retry nor a unit check can be accomplished, the control unit has the option to perform a selective reset function.

摘要翻译： 在具有连接到控制单元的信道的数据处理I / O系统中从CCW重试命令，其中信道检测到错误状况，并请求控制单元重试当前的I / O操作命令。 然后，控制单元确定所请求的重试是否可以完成，并且如果可以的话，将响应发回到请求该信道的信道发起重试。 在收到响应后，通道检查以确定是否仍然存在允许重试的条件，如果是，则执行当前命令以执行重试。 如果控制单元确定不能实现重试，则控制单元具有执行单元检查过程的选项。 如果控制单元确定不能完成重试或单元检查，则控制单元具有执行选择性复位功能的选项。