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    Method and apparatus for performing control unit level recovery operations
    7.
    发明授权
    Method and apparatus for performing control unit level recovery operations 失效
    执行控制单元级别恢复操作的方法和装置

    公开(公告)号：US5423026A

    公开(公告)日：1995-06-06

    申请号：US755200

    申请日：1991-09-05

    申请人： Thomas E. Cook ,  Marten J. Halma ,  Allan S. Meritt ,  Harry M. Yudenfriend

    发明人： Thomas E. Cook ,  Marten J. Halma ,  Allan S. Meritt ,  Harry M. Yudenfriend

    IPC分类号： G06F11/14 ,  G06F11/00

    CPC分类号： G06F11/142

    摘要： Control unit level reset operations in systems having switched point-to-point I/O interface topologies is accomplished by determining and storing channel path identification numbers (CHPID's) and control unit link addresses (CULA's) for each device in the system, scanning this stored data to find devices whose CHPID's and CULA's match the CHPID and CULA for a device or a control unit having a reported error, quiescing devices with such matching CHPID's and CULA's, issuing a control unit level reset command and reactivating the quiesced devices. For systems having both multidropped and switched point-to-point topologies, provision is made for preliminarily determining whether a given control unit reset can be performed on the control unit level.

    摘要翻译： 通过确定和存储系统中每个设备的通道路径标识号（CHPID）和控制单元链路地址（CULA）来实现具有交换点对点I / O接口拓扑的系统中的控制单元电平复位操作，扫描该存储 数据以查找具有报告错误的设备或具有报告错误的控制单元的CHPID和CULA与CHPID和CULA匹配的设备，停止具有这种匹配的CHPID和CULA的设备，发出控制单元级别复位命令并重新激活静默设备。 对于具有多点和交换点对点拓扑的系统，提供预先确定是否可以在控制单元级别执行给定的控制单元复位。

    Establishing and restoring paths in a data processing I/O system
    9.
    发明授权
    Establishing and restoring paths in a data processing I/O system 失效
    建立和恢复数据处理I / O系统中的路径

    公开(公告)号：US5465355A

    公开(公告)日：1995-11-07

    申请号：US150748

    申请日：1993-11-12

    申请人： Thomas E. Cook ,  Mark J. Fantacone ,  Robert E. Galbraith ,  Steven G. Glassen ,  Allan S. Meritt ,  Kenneth J. Oakes ,  Harry M. Yudenfriend

    发明人： Thomas E. Cook ,  Mark J. Fantacone ,  Robert E. Galbraith ,  Steven G. Glassen ,  Allan S. Meritt ,  Kenneth J. Oakes ,  Harry M. Yudenfriend

    IPC分类号： G06F13/10 ,  G06F13/20 ,  G06F13/00 ,  G06F13/14

    CPC分类号： G06F13/10 ,  G06F13/20

    摘要： A data processing I/O system including a main storage for storing data and data processing instructions arranged in software programs, and a channel subsystem having hardware for reporting conditions in the channel subsystem to the software. A special Channel Subsystem Call (CHSC) instruction is used to store event information from the channel subsystem into the main memory for use by the software such that new or restored resources such as a channel path, a channel path and partial control unit link address, or a channel path and full control unit link address, may be originally made accessible, or may be restored to the I/O system. A mechanism is also provided to inquire of a device how long it expects to not be accessible to give the device sufficient time to reset itself before it is varied offline, thus preventing a device from being isolated or "boxed" prematurely.

    摘要翻译： 一种数据处理I / O系统，包括用于存储以软件程序排列的数据和数据处理指令的主存储器，以及具有用于向该软件报告信道子系统中的条件的硬件的通道子系统。 专用信道子系统呼叫（CHSC）指令用于将来自信道子系统的事件信息存储到主存储器中以供软件使用，以便新的或恢复的资源，例如信道路径，信道路径和部分控制单元链路地址， 或通道路径和全控制单元链路地址，可以原来可访问，或者可以被还原到I / O系统。 还提供了一种机制来查询设备，其期望无法访问多长时间，以便在离线之前给设备足够的时间重置自身，从而防止设备过早隔离或“盒装”。