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1. 发明申请

US20060031603A1 Multi-threaded/multi-issue DMA engine data transfer system 审中-公开
标题翻译：多线程/多问题DMA引擎数据传输系统
公开(公告)号：US20060031603A1
公开(公告)日：2006-02-09
申请号：US10914302
申请日：2004-08-09
申请人： Travis Bradfield , Timothy Hoglund , David Weber
发明人： Travis Bradfield , Timothy Hoglund , David Weber
IPC分类号： G06F13/28
CPC分类号： G06F13/28
摘要： A multi-threaded DMA engine data transfer system for a data processing system and a method for transferring data in a data processing system. The DMA Engine data transfer system has at least one frame buffer for storing data transmitted or received over an interface. A multi-threaded DMA engine generates a plurality of requests to transfer data over the interface, processes the plurality of requests using the at least one frame buffer, and completes the transfer requests. The multi-threaded DMA engine data transfer system processes a plurality of data transfer requests simultaneously resulting in improved data throughput performance.
摘要翻译：一种用于数据处理系统的多线程DMA引擎数据传输系统和用于在数据处理系统中传送数据的方法。 DMA引擎数据传输系统具有至少一个帧缓冲器，用于存储通过接口发送或接收的数据。多线程DMA引擎产生多个通过接口传送数据的请求，使用至少一个帧缓冲器处理多个请求，并完成传送请求。多线程DMA引擎数据传输系统同时处理多个数据传输请求，从而提高数据吞吐量性能。

2. 发明申请

US20050108449A1 Pipeline SCSI nexus associativity circuit 有权
标题翻译：管道SCSI nexus组合电路
公开(公告)号：US20050108449A1
公开(公告)日：2005-05-19
申请号：US10715063
申请日：2003-11-17
申请人： Travis Bradfield , Robert Ward , Gregory Johnson
发明人： Travis Bradfield , Robert Ward , Gregory Johnson
IPC分类号： G06F3/00 , G06F13/38
CPC分类号： G06F13/385 , Y10S707/99934
摘要： An innovative circuit is disclosed that enhances performance on a SCSI bus by pipelining nexuses in order to associate all nexus attributes on a per nexus basis. For example, a pipeline of nexuses is created so as to associate all of the nexus attributes from different connections involved. A plurality of load stages is provided whereby each load stage can latch all nexus attributes received at that stage. The latched nexus attributes can be loaded and stored at that stage or shifted to the next stage. As a result of the loading and shifting operations, a pipeline of nexuses is created that associates all of the nexus attributes received from the different connections on a per nexus basis. Therefore, all types of data traffic can be processed concurrently on a SCSI bus, which enhances data throughput and bus performance.
摘要翻译：公开了一种创新的电路，其通过流水线连接来增强SCSI总线上的性能，以便在每个连接的基础上关联所有nexus属性。例如，创建一个nexuses管道，以便关联所涉及的不同连接的所有nexus属性。提供多个负载级，由此每个负载级可以锁存在该级接收的所有连接属性。锁定的关联属性可以在该阶段加载和存储，或者转移到下一个阶段。作为加载和移位操作的结果，创建了一个nexuses流水线，它将从不同连接接收到的所有nexus属性在每个nexus基础上相关联。因此，可以在SCSI总线上同时处理所有类型的数据流量，从而提高数据吞吐量和总线性能。

3. 发明申请

US20060090015A1 Pipelined circuit for tag availability with multi-threaded direct memory access (DMA) activity 审中-公开
标题翻译：多线程直接内存访问（DMA）活动的标签可用流水线
公开(公告)号：US20060090015A1
公开(公告)日：2006-04-27
申请号：US10973479
申请日：2004-10-26
申请人： Travis Bradfield
发明人： Travis Bradfield
IPC分类号： G06F13/28
CPC分类号： G06F13/28
摘要： A method and system for determining multi-thread direct memory activity is described. A pipelined circuit for tag availability with multi-threaded direct memory access activity may be employed. The pipelined circuit includes registers for providing a tag to a direct memory access (DMA) thread and receiving the tag upon completion of the DMA thread. The DMA engine is implemented in a multi-threaded environment allowing for out of order completion of the data transfer requests, such as an environment including a peripheral component interconnect extended (PCI-X) bus. The pipelined circuit provides a multi-threaded DMA engine with tags for transactions. In this manner, the number of DMA threads created and executed by the DMA engine may not exceed the number of stages in the pipelined circuit.
摘要翻译：描述了一种用于确定多线程直接存储器活动的方法和系统。可以采用用于具有多线程直接存储器访问活动的标签可用性的流水线电路。流水线电路包括用于向直接存储器访问（DMA）线程提供标签并在DMA线程完成时接收标签的寄存器。 DMA引擎在多线程环境中实现，允许数据传输请求无序完成，例如包括外围组件互连扩展（PCI-X）总线的环境。流水线电路为多线程DMA引擎提供交易标签。以这种方式，由DMA引擎创建和执行的DMA线程的数量可能不超过流水线电路中的级数。

4. 发明申请

US20050125616A1 Method, apparatus, and program for improving data mirroring performance in a SCSI topology 有权
标题翻译：用于提高SCSI拓扑中数据镜像性能的方法，装置和程序
公开(公告)号：US20050125616A1
公开(公告)日：2005-06-09
申请号：US10728574
申请日：2003-12-05
申请人： Gregory Johnson , Travis Bradfield , Robert Ward
发明人： Gregory Johnson , Travis Bradfield , Robert Ward
IPC分类号： G06F12/16
CPC分类号： G06F11/2087
摘要： A silent mirroring protocol is provided, which eliminates the arbitration/selection times associated with all nexuses after the first nexus. During the initial SCSI bus negotiation, the initiator determines the transfer mode capability of all targets. The initiator establishes a group identification. Participants of the group recognize the group and look for an individual identification within the group. The initiator performs arbitration/selection with attention to the leader of the group. The initiator uses a message out phase with a vendor command to select a participant for a data block transfer. Each participant snoops the bus and recognizes when it is the target. If the initiator has more data to mirror, the process is repeated. When the last data block is transferred, the initiator sends a message out to the last participant, which is interpreted by the target leader as a command to release the bus. Each participant reselects the nexus initiator and returns a status.
摘要翻译：提供了一种无声镜像协议，消除了在第一个关联后与所有nexus相关联的仲裁/选择时间。在初始SCSI总线协商期间，启动器确定所有目标的传输模式能力。发起者建立组识别。该小组的参与者认可该小组，并在该组内寻找个人身份证明。发起人执行仲裁/选择，注意组的领导。启动器使用与供应商命令的消息输出阶段来选择参与者进行数据块传输。每个参与者窥探总线，并识别何时是目标。如果启动器有更多的数据要镜像，则重复该过程。当传送最后一个数据块时，发起者向最后一个参与者发送消息，由目标领导解释为释放总线的命令。每个参与者重新选择nexus启动器并返回一个状态。

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