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    • 7. 发明申请
    • DMA controller, node, data transfer control method and storage medium
    • DMA控制器,节点,数据传输控制方法和存储介质
    • US20080104341A1
    • 2008-05-01
    • US11905373
    • 2007-09-28
    • Shunichi IharaYuichi OgawaTerumasa HanedaKazunori Masuyama
    • Shunichi IharaYuichi OgawaTerumasa HanedaKazunori Masuyama
    • G06F12/00
    • G06F13/28
    • In response to a request from a central processing unit (CPU) 11 (i.e., firmware) of a node 10, a transfer control unit 14a of a direct memory access (DMA) controller 14 transmits a message and data to another discretionary node 3 by way of a serial bus 1, a switch 2 or the like. In this event, the firmware stores data to be transmitted, a message, and a descriptor thereof in memory 12. In the case of requesting the transmission of the message, the descriptor contains a flag indicating “whether or not there is a need to wait for a response from the data transmission destination”. If the flag is set to ON, the transfer control unit 14a notifies the firmware of a simulated completion immediately instead of waiting for a completion response from the transmission destination node 3.
    • 响应于来自节点10的中央处理单元(CPU)11(即固件)的请求,直接存储器访问(DMA)控制器14的传送控制单元14a将消息和数据发送到另一个可选节点3 通过串行总线1,开关2等。 在这种情况下,固件将要发送的数据,消息及其描述符存储在存储器12中。 在请求发送消息的情况下,描述符包含指示“是否需要等待来自数据发送目的地的响应”的标志。 如果标志设置为ON,则传送控制单元14a立即通知固件仿真完成,而不是等待来自发送目的地节点3的完成响应。
    • 8. 发明授权
    • Communication system using PCI-Express and communication method for plurality of nodes connected through a PCI-Express
    • 使用PCI-Express的通信系统和通过PCI-Express连接的多个节点的通信方法
    • US07484033B2
    • 2009-01-27
    • US11359580
    • 2006-02-23
    • Hiroshi IshizawaTerumasa HanedaYuichi Ogawa
    • Hiroshi IshizawaTerumasa HanedaYuichi Ogawa
    • G06F13/00
    • G06F13/4022
    • To be able to transmit a response packet to a target, which is the original request source node, even if, after issuing a request from a node to another, a bus ID/a device ID is replaced in the PCI-Express switch before said another node makes a response to the request source node in a PCI-Express communication system, which uses a PCI-Express switch. For that purpose, a unique node ID for indicating each node is set to the nodes, a channel ID is set to each channel used for data transfer, and the node ID of the transfer destination module, the channel ID of a channel used for the data transfer, and the packet type indicating that the packet is a request or a response are set in an address field of a packet of data transfer. For the data transfer, only a memory write request packet routed by address routing is used.
    • 为了能够将响应分组发送到作为原始请求源节点的目标,即使在从节点向另一节点发出请求之后,在所述PCI-Express交换机之前,将总线ID /设备ID替换为所述PCI-Express交换机 另一个节点在使用PCI-Express交换机的PCI-Express通信系统中对请求源节点做出响应。 为此,将用于指示每个节点的唯一节点ID设置为节点,将信道ID设置为用于数据传输的每个信道,并且传送目的地模块的节点ID,用于该节点的信道的信道ID 数据传输,以及指示分组是请求或响应的分组类型被设置在数据传送分组的地址字段中。 对于数据传输,仅使用由地址路由路由的存储器写请求分组。
    • 10. 发明申请
    • File control system and file control device
    • 文件控制系统和文件控制装置
    • US20060190772A1
    • 2006-08-24
    • US11237655
    • 2005-09-29
    • Yuuji HanaokaToshiyuki YoshidaYuichi OgawaTerumasa HanedaKazunori Masuyama
    • Yuuji HanaokaToshiyuki YoshidaYuichi OgawaTerumasa HanedaKazunori Masuyama
    • G06F11/00
    • H04L1/0082
    • A file control system of the present invention is a file control system performing DMA transfer and comprising a plurality of file control devices, each of which is provided between a host computer and an external storage device, a first file control device among the plurality of file control devices, checks the consistency between the data read from a memory and the first error detection code given in advance to the data, changes the error detection code added to the read data from the first error detection code to a second error detection code, when the inconsistency is detected by the check, changes at least a part of the data comprising the second error detection code and the data associated with the second error detection code, and executes DMA-transfer of the data which is changed or is not changed to a second file control device of the transfer destination.
    • 本发明的文件控制系统是执行DMA传输的文件控制系统,包括多个文件控制装置,每个文件控制装置设置在主计算机和外部存储装置之间,多个文件中的第一文件控制装置 控制装置检查从存储器读取的数据与预先给出的数据之间的第一错误检测码的一致性,将从第一错误检测码添加到读取数据的错误检测码改变为第二错误检测码,当 通过检查检测到不一致,改变包括第二错误检测码的数据的至少一部分和与第二错误检测码相关联的数据,并且执行被改变或不被改变的数据的DMA传送 传送目的地的第二文件控制装置。