公开(公告)号：US06170025A

公开(公告)日：2001-01-02

申请号：US09132324

申请日：1998-08-11

申请人： Ken Drottar ,  David S. Dunning ,  William T. Futral

发明人： Ken Drottar ,  David S. Dunning ,  William T. Futral

IPC分类号： G06F300

CPC分类号： H04L1/0057 ,  H04L1/16 ,  H04L1/1635 ,  H04L1/1806 ,  H04L1/1835 ,  H04L1/1877 ,  H04L1/188 ,  H04L1/1883 ,  H04L29/06 ,  H04L41/0654 ,  H04L67/10 ,  H04L69/22 ,  H04L2001/0092 ,  H04L2001/0096

摘要： A distributed computer system includes a host CPU, a network/host bridge, a network/I/O bridge and one or more I/O devices. The host CPU can generate a locked host transaction, which is wrapped in a packet and transmitted over a network to the remote I/O device for replay. The remote I/O devices can generate interrupts. The interrupt is wrapped in a packet and transmitted to the host computer for replay as an interrupt. The host CPU then executes the appropriate interrupt service routine to process the interrupt routine. The remote location of the I/O device with respect to the host CPU is transparent to the CPU and I/O devices. The bridges perform wrapping and unwrapping of host and I/O transactions for transmission across a network.

摘要翻译： 分布式计算机系统包括主机CPU，网络/主机桥，网络/ I / O桥以及一个或多个I / O设备。 主机CPU可以生成锁定的主机事务，其被包裹在分组中并通过网络传输到远程I / O设备以进行重放。 远程I / O设备可以产生中断。 中断包裹在一个数据包中，并传送到主计算机作为中断重播。 然后，主机CPU执行适当的中断服务程序来处理中断程序。 I / O设备相对于主机CPU的远程位置对于CPU和I / O设备是透明的。 网桥执行主机和I / O事务的包装和解包，以便跨网络传输。

公开(公告)号：US07203853B2

公开(公告)日：2007-04-10

申请号：US10302295

申请日：2002-11-22

申请人： Andrew W. Martwick ,  Ken Drottar ,  David S. Dunning ,  Zale T. Schoenborn ,  Andrew M. Volk ,  Ronald W. Swartz ,  Dennis J. Miller

发明人： Andrew W. Martwick ,  Ken Drottar ,  David S. Dunning ,  Zale T. Schoenborn ,  Andrew M. Volk ,  Ronald W. Swartz ,  Dennis J. Miller

IPC分类号： G06F12/00

CPC分类号： G06F1/3209 ,  G06F1/325 ,  G06F1/3253 ,  Y02D10/151

摘要： An apparatus and method for low latency power management on a serial data link are described. In one embodiment, the method includes the detection of an electrical idle exit condition during receiver operation in an electrical idle state. Once detected, data synchronization is performed according to one or more received data synchronization training patterns. Finally, when the synchronization is performed within a determined synchronization re-establishment period, the receiver will resume operation according to a normal power state. Accordingly, the embodiment described illustrates an open loop, low latency power resumption operation for power management within 3GIO links.

摘要翻译： 描述了串行数据链路上的低延迟功率管理的装置和方法。 在一个实施例中，该方法包括在电气空闲状态期间在接收机操作期间检测电空闲出口状况。 一旦检测到，则根据一个或多个接收到的数据同步训练模式执行数据同步。 最后，当在确定的同步重建周期内执行同步时，接收机将根据正常功率状态恢复操作。 因此，所描述的实施例示出了3GIO链路内的电源管理的开环低延迟功率恢复操作。

公开(公告)号：US06687840B1

公开(公告)日：2004-02-03

申请号：US09557099

申请日：2000-04-21

申请人： Ken Drottar ,  David S. Dunning

发明人： Ken Drottar ,  David S. Dunning

IPC分类号： G06F1342

CPC分类号： H04L47/10 ,  H04L69/14 ,  H04L69/324 ,  Y02D50/30

摘要： A method, apparatus, and system are provided for multi-link extensions and bundle skew management. According to one embodiment, multiple parallel links between two or more devices are combined into a single channel, and cells on the various links are received in a round-robin order, and variations in flight time between the various links are compensated through a timer at each receive port of the bundle.

摘要翻译： 提供了一种方法，装置和系统用于多链路扩展和捆绑偏移管理。 根据一个实施例，两个或多个设备之间的多个并行链路被组合成单个信道，并且以循环次序接收各个链路上的小区，并且通过定时器在各个链路之间的飞行时间的变化被补偿 每个接收端口的捆绑。

公开(公告)号：US6094683A

公开(公告)日：2000-07-25

申请号：US137168

申请日：1998-08-20

申请人： Ken Drottar ,  David S. Dunning

发明人： Ken Drottar ,  David S. Dunning

IPC分类号： H04L1/00 ,  H04L1/16 ,  H04L12/24 ,  H04L29/06 ,  H04L29/08 ,  G06F15/173 ,  G06F15/16

CPC分类号： H04L69/22 ,  H04L69/14 ,  H04L1/16 ,  H04L2001/0092 ,  H04L2001/0096 ,  H04L41/0654 ,  H04L69/324 ,  Y02B60/33

摘要： A technique for bundling links is provided for increasing bandwidth and reducing latency. Two nodes in a network are configured to bundle two or more links connected between the two nodes. Data is transmitted between the two nodes by striping data over each link of the bundle. Data is transmitted in cells, and one or more cells are transmitted over each link of the bundle. The cells transmitted on one or more of the links include routing information.

摘要翻译： 提供捆绑链接的技术用于增加带宽并减少延迟。 网络中的两个节点被配置为捆绑连接在两个节点之间的两个或多个链路。 通过在捆绑的每个链路上分条数据，在两个节点之间传输数据。 数据在单元中传输，并且一个或多个单元通过该组的每个链路传输。 在一个或多个链路上发送的小区包括路由信息。

公开(公告)号：US06333929B1

公开(公告)日：2001-12-25

申请号：US09139022

申请日：1998-08-24

申请人： Ken Drottar ,  David S. Dunning

发明人： Ken Drottar ,  David S. Dunning

IPC分类号： H04J302

CPC分类号： H04L1/0057 ,  H04L1/0059 ,  H04L1/0072 ,  H04L1/16 ,  H04L1/1635 ,  H04L1/1806 ,  H04L1/1835 ,  H04L1/1877 ,  H04L1/188 ,  H04L1/1883 ,  H04L29/06 ,  H04L43/0811 ,  H04L67/10 ,  H04L67/2804 ,  H04L67/2819 ,  H04L69/14 ,  H04L69/22 ,  H04L69/26 ,  H04L69/32 ,  H04L69/324 ,  H04L2001/0092 ,  H04L2001/0096

摘要： A method is provided for transmitting a packet including information describing a bus transaction to be executed at a remote device. A bus transaction is detected on a first bus and a network packet is generated for transmission over a network. The network packet includes an opcode describing the type of bus transaction. One or more control signals of the bus transaction map directly to one or more bits of the opcode to simplify decoding or converting of the bus transaction to the opcode. The packet is transmitted to a remote device and the bus transaction is then replayed at a second bus. In addition, the packet includes a data field having a size that is a multiple of a cache line size. The packet includes separate CRCs for the data and header. The packet also includes a transaction ID to support split transactions over the network. Also, fields in the packet header are provided in a particular order to improve switching efficiency.

摘要翻译： 提供了一种用于发送包括描述要在远程设备处执行的总线事务的信息的分组的方法。 在第一总线上检测到总线事务，并且生成网络分组用于通过网络传输。 网络分组包括描述总线事务类型的操作码。 总线事务的一个或多个控制信号直接映射到操作码的一个或多个位，以简化总线事务的解码或转换到操作码。 该分组被发送到远程设备，然后总线事务在第二总线上重放。 此外，分组包括具有高速缓存行大小的倍数的数据字段。 该数据包包括用于数据和报头的单独的CRC。 该分组还包括用于支持通过网络进行拆分事务的事务ID。 此外，分组报头中的字段以特定顺序提供以提高切换效率。

公开(公告)号：US06181704B2

公开(公告)日：2001-01-30

申请号：US09141136

申请日：1998-08-27

申请人： Ken Drottar ,  David S. Dunning ,  Donald F. Cameron

发明人： Ken Drottar ,  David S. Dunning ,  Donald F. Cameron

IPC分类号： H04Q1104

CPC分类号： H04L1/0057 ,  H04L1/16 ,  H04L1/1621 ,  H04L1/1635 ,  H04L1/1806 ,  H04L1/1835 ,  H04L1/1877 ,  H04L1/188 ,  H04L1/1883 ,  H04L29/06 ,  H04L41/0663 ,  H04L47/10 ,  H04L47/17 ,  H04L47/26 ,  H04L47/34 ,  H04L67/28 ,  H04L67/2876 ,  H04L69/14 ,  H04L69/22 ,  H04L69/26 ,  H04L69/32 ,  H04L69/324 ,  H04L2001/0092 ,  H04L2001/0096

摘要： A method for transmitting data in a network from a source node to a destination node includes the steps of transmitting data packets from the source node to an intermediary point, and assigning each of the packets a corresponding sequence number. A copy of each packet is stored in a buffer at the source node until receiving an acknowledgment that each packet was successfully received by the intermediary point. Upon successfully reaching the intermediate point, the intermediate point assigns an intermediate point sequence number to each packet. A copy of each packet is retained in a buffer at the intermediate point until receiving an acknowledgment that the packet was successfully received at the next delivery point. Once a particular packet is successfully received at an intermediary point, the particular packet is de-allocated at the source node, as are any other packets in the buffer between the particular packet and the last acknowledged packet. Upon receipt of an error indication, each packet is retransmitted along with all subsequent packets. At the receiving end, all received packets following the packet associated with the error indication are dropped until successfully receiving a retransmitted version of the packet. In addition, a single negative acknowledgment is used to indicate that a packet associated with the negative acknowledgment includes at least one error and to simultaneously indicate that all previous packets received prior to the packet associated with the negative acknowledgment were received correctly. Finally, a link sequence number is assigned to each of packet before transmitting it from a origination point in a link. Subsequently, each new link origination point assigns a sequence number that is independent from the sequence number assigned by the source node or the previous origination point.

摘要翻译： 一种用于在网络中从源节点向目的地节点发送数据的方法包括以下步骤：将数据分组从源节点发送到中间点，并且分配每个分组相应的序列号。 每个分组的副本被存储在源节点的缓冲器中，直到接收到每个分组被中间点成功接收的确认。 中间点成功到达中间点后，将中间点序列号分配给每个数据包。 每个分组的副本保留在中间点的缓冲器中，直到接收到在下一个传送点成功接收到分组的确认。 一旦在中间点成功地接收到特定分组，则特定分组在源节点处被去分配，以及特定分组和最后确认分组之间的缓冲器中的任何其他分组。 在接收到错误指示时，每个数据包与所有后续数据包一起被重新发送。 在接收端，删除与错误指示相关联的分组之后的所有接收到的分组，直到成功接收到分组的重传版本为止。 此外，单个否定确认用于指示与否定确认相关联的分组包括至少一个错误并且同时指示在与否定确认相关联的分组之前接收的所有先前分组被正确接收。 最后，在从链路中的发起点发送之前，将链路序列号分配给每个分组。 随后，每个新的链路起始点分配与源节点或先前发起点分配的序列号无关的序列号。

公开(公告)号：US08576843B2

公开(公告)日：2013-11-05

申请号：US13289863

申请日：2011-11-04

申请人： Ken Drottar ,  David S. Dunning

发明人： Ken Drottar ,  David S. Dunning

IPC分类号： H04L12/28

CPC分类号： H04L1/0057 ,  H04L1/0059 ,  H04L1/0072 ,  H04L1/16 ,  H04L1/1635 ,  H04L1/1806 ,  H04L1/1835 ,  H04L1/1877 ,  H04L1/188 ,  H04L1/1883 ,  H04L29/06 ,  H04L43/0811 ,  H04L67/10 ,  H04L67/2804 ,  H04L67/2819 ,  H04L69/14 ,  H04L69/22 ,  H04L69/26 ,  H04L69/32 ,  H04L69/324 ,  H04L2001/0092 ,  H04L2001/0096

摘要： A method is provided for transmitting a packet including information describing a bus transaction to be executed at a remote device. A bus transaction is detected on a first bus and a network packet is generated for transmission over a network. The network packet includes an opcode describing the type of bus transaction. One or more control signals of the bus transaction map directly to one or more bits of the opcode to simplify decoding or converting of the bus transaction to the opcode. The packet is transmitted to a remote device and the bus transaction is then replayed at a second bus. In addition, the packet includes a data field having a size that is a multiple of a cache line size. The packet includes separate CRCs for the data and header. The packet also includes a transaction ID to support split transactions over the network. Also, fields in the packet header are provided in a particular order to improve switching efficiency.

公开(公告)号：US08068488B2

公开(公告)日：2011-11-29

申请号：US12648151

申请日：2009-12-28

申请人： Ken Drottar ,  David S. Dunning

发明人： Ken Drottar ,  David S. Dunning

IPC分类号： H04L12/56

CPC分类号： H04L1/0057 ,  H04L1/0059 ,  H04L1/0072 ,  H04L1/16 ,  H04L1/1635 ,  H04L1/1806 ,  H04L1/1835 ,  H04L1/1877 ,  H04L1/188 ,  H04L1/1883 ,  H04L29/06 ,  H04L43/0811 ,  H04L67/10 ,  H04L67/2804 ,  H04L67/2819 ,  H04L69/14 ,  H04L69/22 ,  H04L69/26 ,  H04L69/32 ,  H04L69/324 ,  H04L2001/0092 ,  H04L2001/0096

摘要： A method is provided for transmitting a packet including information describing a bus transaction to be executed at a remote device. A bus transaction is detected on a first bus and a network packet is generated for transmission over a network. The network packet includes an opcode describing the type of bus transaction. One or more control signals of the bus transaction map directly to one or more bits of the opcode to simplify decoding or converting of the bus transaction to the opcode. The packet is transmitted to a remote device and the bus transaction is then replayed at a second bus. In addition, the packet includes a data field having a size that is a multiple of a cache line size. The packet includes separate CRCs for the data and header. The packet also includes a transaction ID to support split transactions over the network. Also, fields in the packet header are provided in a particular order to improve switching efficiency.

摘要翻译： 提供了一种用于发送包括描述要在远程设备处执行的总线事务的信息的分组的方法。 在第一总线上检测到总线事务，并且生成网络分组用于通过网络传输。 网络分组包括描述总线事务类型的操作码。 总线事务的一个或多个控制信号直接映射到操作码的一个或多个位，以简化总线事务的解码或转换为操作码。 该分组被发送到远程设备，然后总线事务在第二总线上重放。 此外，分组包括具有高速缓存行大小的倍数的数据字段。 该数据包包括用于数据和报头的单独的CRC。 该分组还包括用于支持通过网络进行拆分事务的事务ID。 此外，分组报头中的字段以特定顺序提供以提高切换效率。

公开(公告)号：US07711939B2

公开(公告)日：2010-05-04

申请号：US11171114

申请日：2005-06-30

申请人： Karthisha S. Canagasaby ,  Ken Drottar ,  David S. Dunning ,  Sanjay Dabral

发明人： Karthisha S. Canagasaby ,  Ken Drottar ,  David S. Dunning ,  Sanjay Dabral

IPC分类号： H03K3/00

CPC分类号： H04L25/0282

摘要： A source terminated serial link can recover from a low power mode by turning on multiple current-mode drivers in a phased sequence where the phased sequence is related to a resonant characteristic of a power supply net.

摘要翻译： 源端接串行链路可以通过在分相序列中打开多个电流模式驱动器从低功率模式恢复，其中相序序列与电源网络的谐振特性相关。

公开(公告)号：US07394766B2

公开(公告)日：2008-07-01

申请号：US10654252

申请日：2003-09-02

申请人： Ken Drottar ,  David S. Dunning

发明人： Ken Drottar ,  David S. Dunning

IPC分类号： G01R31/08

CPC分类号： H04L7/02 ,  H04L25/14 ,  H04L2012/5624

摘要： A method, apparatus, and system are provided for multi-link extensions and bundle skew management. According to one embodiment, multiple parallel links between a central processing unit (CPU) and a peripheral device are combined into a single channel, and cells on the various links are received in a round-robin order, and variations in flight time between the various links are compensated through a timer at each receive port of the bundle.

摘要翻译： 提供了一种方法，装置和系统用于多链路扩展和捆绑偏移管理。 根据一个实施例，中央处理单元（CPU）和外围设备之间的多个并行链路被组合成单个信道，并且以循环次序接收各个链路上的小区，并且各种 链路通过每个接收端口上的定时器进行补偿。