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1. 发明授权

US08539135B2 Route lookup method for reducing overall connection latencies in SAS expanders 有权
标题翻译：路由查找方法，用于减少SAS扩展器中的整体连接延迟
公开(公告)号：US08539135B2
公开(公告)日：2013-09-17
申请号：US13106208
申请日：2011-05-12
申请人： Nitin Kabra , Gurvinder Singh
发明人： Nitin Kabra , Gurvinder Singh
IPC分类号： G06F13/00 , H04L12/56 , G06F13/40
CPC分类号： H04L45/00 , G06F13/4022
摘要： A system and method for reducing overall connection latencies in a SAS expander is disclosed. The SAS expander includes a plurality of ports and a route lookup table configured for providing a central resource for routing information for the ports. The SAS expander also includes a plurality of connection history caches (CHCs) associated with the ports, each CHC is configured for storing at least one successfully established connection record. Upon receiving a connection request at a particular port, that particular port may determine whether a matching connection record for the connection request is stored in its corresponding CHC. If the matching connection record is stored in its corresponding CHC, a connection may be established in response to the connection request based on the matching connection record. However, if no matching connection record is found in its corresponding CHC, the connection may be established utilizing the route lookup table.
摘要翻译：公开了一种用于减少SAS扩展器中的整体连接延迟的系统和方法。 SAS扩展器包括多个端口和路由查找表，其被配置为提供用于为端口路由信息的中央资源。 SAS扩展器还包括与端口相关联的多个连接历史缓存（CHC），每个CHC被配置用于存储至少一个成功建立的连接记录。在特定端口接收到连接请求时，该特定端口可以确定连接请求的匹配连接记录是否存储在其对应的CHC中。如果匹配的连接记录存储在其对应的CHC中，则可以基于匹配的连接记录响应于连接请求来建立连接。然而，如果在其对应的CHC中没有找到匹配的连接记录，则可以使用路由查找表来建立连接。

2. 发明申请

US20110099304A1 Controller and a Method for Controlling the Communication Between a Processor and an External Peripheral Device 有权
标题翻译：控制器和一种用于控制处理器和外部设备之间的通信的方法
公开(公告)号：US20110099304A1
公开(公告)日：2011-04-28
申请号：US11573194
申请日：2005-07-22
申请人： Chee Y. Ng , Nitin Kabra
发明人： Chee Y. Ng , Nitin Kabra
IPC分类号： G06F3/00
CPC分类号： G06F13/4059 , G06F9/383 , G06F9/3851
摘要： The present invention relates to a data processing system based on a multithreaded operating system. The data processing system comprises at least one processor (PROC) for processing data based on multiple threads, at least one controller unit (CU) for controlling the communication between said at least one processor (PROC) and an external peripheral device (PD) connected to said at least one controller unit (CU). Said at least one controller unit (CU) comprises at least one buffer memory (BM) for buffering data from said peripheral device (PD) connected to said at least one controller unit (CU), and at least one memory managing unit (MMU) for managing the access to said at least one buffer memory (BM) by mapping said at least one buffer memory (BM) into N banks (C0-C3) each with a dedicated prefetch register (Addr.0-Addr.3). At least one of said multiple threads (T0-T3) is mapped to one of said N banks (C0-C3) and its dedicated prefetch register (Addr.0-Addr.3).
摘要翻译：本发明涉及一种基于多线程操作系统的数据处理系统。数据处理系统包括用于基于多个线程处理数据的至少一个处理器（PROC），用于控制所述至少一个处理器（PROC）和连接的外部外围设备（PD）之间的通信的至少一个控制器单元（CU）到所述至少一个控制器单元（CU）。所述至少一个控制器单元（CU）包括用于缓冲来自连接到所述至少一个控制器单元（CU）的所述外围设备（PD）的数据的至少一个缓冲存储器（BM），以及至少一个存储器管理单元（MMU）用于通过将所述至少一个缓冲存储器（BM）映射成具有专用预取寄存器（Addr.0-Addr.3）的N个存储体（C0-C3）来管理对所述至少一个缓冲存储器（BM）的访问。所述多个线程（T0-T3）中的至少一个映射到所述N个存储体（C0-C3）和其专用预取寄存器（Addr.0-Addr.3）中的一个。

3. 发明申请

US20120290762A1 ROUTE LOOKUP METHOD FOR REDUCING OVERALL CONNECTION LATENCIES IN SAS EXPANDERS 有权
标题翻译：用于减少SAS扩展器中的整体连接延迟的路由查找方法
公开(公告)号：US20120290762A1
公开(公告)日：2012-11-15
申请号：US13106208
申请日：2011-05-12
申请人： Nitin Kabra , Gurvinder Singh
发明人： Nitin Kabra , Gurvinder Singh
IPC分类号： G06F13/14
CPC分类号： H04L45/00 , G06F13/4022
摘要： A system and method for reducing overall connection latencies in a SAS expander is disclosed. The SAS expander includes a plurality of ports and a route lookup table configured for providing a central resource for routing information for the ports. The SAS expander also includes a plurality of connection history caches (CHCs) associated with the ports, each CHC is configured for storing at least one successfully established connection record. Upon receiving a connection request at a particular port, that particular port may determine whether a matching connection record for the connection request is stored in its corresponding CHC. If the matching connection record is stored in its corresponding CHC, a connection may be established in response to the connection request based on the matching connection record. However, if no matching connection record is found in its corresponding CHC, the connection may be established utilizing the route lookup table.
摘要翻译：公开了一种用于减少SAS扩展器中的整体连接延迟的系统和方法。 SAS扩展器包括多个端口和路由查找表，其被配置为提供用于为端口路由信息的中央资源。 SAS扩展器还包括与端口相关联的多个连接历史缓存（CHC），每个CHC被配置用于存储至少一个成功建立的连接记录。在特定端口接收到连接请求时，该特定端口可以确定连接请求的匹配连接记录是否存储在其对应的CHC中。如果匹配的连接记录存储在其对应的CHC中，则可以基于匹配的连接记录响应于连接请求来建立连接。然而，如果在其对应的CHC中没有找到匹配的连接记录，则可以使用路由查找表来建立连接。

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