公开(公告)号：US09244874B2

公开(公告)日：2016-01-26

申请号：US13918685

申请日：2013-06-14

Applicant: NATIONAL INSTRUMENTS CORPORATION

Inventor： Jonathan W. Hearn ,  Craig S. Jones ,  Robert D. Ross

IPC: G06F13/40 ,  G06F9/50

CPC classification number: G06F13/4045 ,  G06F9/5077 ,  G06F13/36 ,  G06F13/4022 ,  G06F13/404 ,  G06F13/4068 ,  G06F13/4282

Abstract: A selectively transparent bridge facilitates a PCI device presenting itself to the host as a PCI-to-PCI bridge but selectively hiding and isolating hardware from the host bus. PCI configuration may be achieved through the standard PCI Express configuration mechanisms, but instead of configuring devices directly, a configuration processor in the selectively transparent bridge may intercept the configuration packets from the host, and create a virtual configuration to alter how the bus topology appears to the host. Devices are selectively hidden and managed by the configuration processor, resulting in simplified complexity and bus depth. Since the selectively transparent bridge appears to the host as a transparent bridge, no special drivers or resource preallocations are required, although the selectively transparent bridge fully supports special drivers and/or resource preallocations. Devices located/connected downstream of the bridge may therefore function with unmodified drivers.

Abstract translation: 选择性透明的桥接器有助于将PCI设备作为PCI至PCI桥接器呈现给主机，但是选择性地将硬件与主机总线隔离并隔离。 PCI配置可以通过标准的PCI Express配置机制来实现，但不是直接配置设备，而是选择性透明的桥接器中的配置处理器可能会拦截来自主机的配置数据包，并创建一个虚拟配置，以改变总线拓扑的显示方式 主人。 设备由配置处理器选择性地隐藏和管理，导致简化的复杂性和总线深度。 由于选择性透明的桥接器作为透明桥显示给主机，因此不需要特殊的驱动程序或资源预分配，尽管选择性透明的桥完全支持特殊驱动程序和/或资源预分配。 因此，位于/连接在桥下游的设备因此可以与未修改的驱动器一起工作。

公开(公告)号：US20140372660A1

公开(公告)日：2014-12-18

申请号：US13918435

申请日：2013-06-14

Applicant: NATIONAL INSTRUMENTS CORPORATION

Inventor： Craig S. Jones ,  Robert D. Ross

IPC: G06F13/40

CPC classification number: G06F13/4022

Abstract: A PCIe subsystem may be coupled to a host by a system extender adapted to perform PCIe packet routing based on packet type. A first TLP (transport layer packet) type router may receive PCIe packets, and selectively route the PCIe packets according to the type of the packet through a corresponding path of at least two alternate paths. A second TLP type router may receive the routed packet through a first path if the PCIe packet was routed through the first path, and may receive the routed packet through a second path if the routed packet was routed through the second path. A non transparent bridge may be coupled between the first TLP type router block and the second TLP type router block along the second path, while the first path may be a pass-through path from the first TLP type router block to the second TLP type router block.

Abstract translation: PCIe子系统可以由适于基于分组类型执行PCIe分组路由的系统扩展器耦合到主机。 第一TLP（传输层分组）型路由器可以接收PCIe分组，并且根据分组的类型通过至少两个备选路径的对应路径选择性地路由PCIe分组。 如果PCIe分组通过第一路径路由，则第二TLP类型路由器可以经由第一路径接收路由分组，并且如果路由分组被路由通过第二路径，则可以通过第二路径接收路由分组。 第一TLP型路由器块和第二TLP型路由器块之间可以沿着第二路径耦合非透明桥，而第一路径可以是从第一TLP型路由器块到第二TLP型路由器的直通路径 块。

公开(公告)号：US20140372641A1

公开(公告)日：2014-12-18

申请号：US13918685

申请日：2013-06-14

Applicant: National Instruments Corporation

Inventor： Jonathan W. Hearn ,  Craig S. Jones ,  Robert D. Ross

IPC: G06F13/40

CPC classification number: G06F13/4045 ,  G06F9/5077 ,  G06F13/36 ,  G06F13/4022 ,  G06F13/404 ,  G06F13/4068 ,  G06F13/4282

Abstract: A selectively transparent bridge facilitates a PCI device presenting itself to the host as a PCI-to-PCI bridge but selectively hiding and isolating hardware from the host bus. PCI configuration may be achieved through the standard PCI Express configuration mechanisms, but instead of configuring devices directly, a configuration processor in the selectively transparent bridge may intercept the configuration packets from the host, and create a virtual configuration to alter how the bus topology appears to the host. Devices are selectively hidden and managed by the configuration processor, resulting in simplified complexity and bus depth. Since the selectively transparent bridge appears to the host as a transparent bridge, no special drivers or resource preallocations are required, although the selectively transparent bridge fully supports special drivers and/or resource preallocations. Devices located/connected downstream of the bridge may therefore function with unmodified drivers.

Abstract translation: 选择性透明的桥接器有助于将PCI设备作为PCI至PCI桥接器呈现给主机，但是选择性地将硬件与主机总线隔离并隔离。 PCI配置可以通过标准的PCI Express配置机制来实现，但不是直接配置设备，而是选择性透明的桥接器中的配置处理器可以拦截来自主机的配置数据包，并创建一个虚拟配置，以改变总线拓扑的显示方式 主人。 设备由配置处理器选择性地隐藏和管理，导致简化的复杂性和总线深度。 由于选择性透明的桥接器作为透明桥显示给主机，因此不需要特殊的驱动程序或资源预分配，尽管选择性透明的桥完全支持特殊驱动程序和/或资源预分配。 因此，位于/连接在桥下游的设备因此可以与未修改的驱动器一起工作。

公开(公告)号：US10176137B2

公开(公告)日：2019-01-08

申请号：US14997912

申请日：2016-01-18

Applicant: NATIONAL INSTRUMENTS CORPORATION

Inventor： Jonathan W. Hearn ,  Craig S. Jones ,  Robert D. Ross

IPC: G06F13/40 ,  G06F13/42 ,  G06F13/36 ,  G06F9/50

Abstract: A selectively transparent bridge facilitates a PCI device presenting itself to the host as a PCI-to-PCI bridge but selectively hiding and isolating hardware from the host bus. PCI configuration may be achieved through the standard PCI Express configuration mechanisms, but instead of configuring devices directly, a configuration processor in the selectively transparent bridge may intercept the configuration packets from the host, and create a virtual configuration to alter how the bus topology appears to the host. Devices are selectively hidden and managed by the configuration processor, resulting in simplified complexity and bus depth. Since the selectively transparent bridge appears to the host as a transparent bridge, no special drivers or resource preallocations are required, although the selectively transparent bridge fully supports special drivers and/or resource preallocations. Devices located/connected downstream of the bridge may therefore function with unmodified drivers.

公开(公告)号：US20160132453A1

公开(公告)日：2016-05-12

申请号：US14997912

申请日：2016-01-18

Applicant: NATIONAL INSTRUMENTS CORPORATION

Inventor： Jonathan W. Hearn ,  Craig S. Jones ,  Robert D. Ross

IPC: G06F13/40 ,  G06F13/42 ,  G06F13/36

CPC classification number: G06F13/4045 ,  G06F9/5077 ,  G06F13/36 ,  G06F13/4022 ,  G06F13/404 ,  G06F13/4068 ,  G06F13/4282

Abstract: A selectively transparent bridge facilitates a PCI device presenting itself to the host as a PCI-to-PCI bridge but selectively hiding and isolating hardware from the host bus. PCI configuration may be achieved through the standard PCI Express configuration mechanisms, but instead of configuring devices directly, a configuration processor in the selectively transparent bridge may intercept the configuration packets from the host, and create a virtual configuration to alter how the bus topology appears to the host. Devices are selectively hidden and managed by the configuration processor, resulting in simplified complexity and bus depth. Since the selectively transparent bridge appears to the host as a transparent bridge, no special drivers or resource preallocations are required, although the selectively transparent bridge fully supports special drivers and/or resource preallocations. Devices located/connected downstream of the bridge may therefore function with unmodified drivers.

Abstract translation: 选择性透明的桥接器有助于将PCI设备作为PCI至PCI桥接器呈现给主机，但是选择性地将硬件与主机总线隔离并隔离。 PCI配置可以通过标准的PCI Express配置机制来实现，但不是直接配置设备，而是选择性透明的桥接器中的配置处理器可能会拦截来自主机的配置数据包，并创建一个虚拟配置，以改变总线拓扑的显示方式 主人。 设备由配置处理器选择性地隐藏和管理，导致简化的复杂性和总线深度。 由于选择性透明的桥接器作为透明桥显示给主机，因此不需要特殊的驱动程序或资源预分配，尽管选择性透明的桥完全支持特殊驱动程序和/或资源预分配。 因此，位于/连接在桥下游的设备因此可以与未修改的驱动器一起工作。