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Bridging inter-bus communications

A bus and access request technology, applied to instruments, preventing unauthorized use of memory, computing, etc., can solve problems such as not providing security

Active Publication Date: 2017-03-22
XILINX INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In contrast, the Peripheral Component Interconnect-Express (PCIe) bus architecture does not offer similar security

Method used

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  • Bridging inter-bus communications
  • Bridging inter-bus communications
  • Bridging inter-bus communications

Examples

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Embodiment Construction

[0012] In the following description, numerous specific details are set forth to more fully describe the specific embodiments described herein. It will be apparent, however, to one skilled in the art that one or more other embodiments and / or variations of these embodiments may be practiced without all of the specific details described below. In other instances, well-known features have not been described in detail in order not to obscure the description of the examples in the present application. For ease of illustration, the same numerical designations are used in the different figures to refer to the same items; however, in alternative embodiments, these items may be different.

[0013] The disclosed bridge circuit is able to adapt the security measures implemented by the first bus in bridged communication to the second bus which does not implement the security mechanisms of the first bus. According to a certain approach, the bridge circuit is capable of storing address tran...

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PUM

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Abstract

Approaches for bridging communication between first and second buses are disclosed. Address translation information and associated security indicators are stored (202) in a memory. Each access request from the first bus includes a first requester security indicator and a requested address. Each access request from the first bus and directed to the second bus is either rejected (214), or translated (210) and communicated (212) to the second bus, based on the requester security indicator and the security indicator associated with the address translation information for the requested address. Each access request from the second bus to the first bus includes the requested address, and the access request is translated (226) and communicated (228) to the first bus along with the security indicator that is associated with the address translation information for the requested address.

Description

technical field [0001] The present application generally relates to bridging communications between buses. Background technique [0002] A bus is an interconnected subsystem or circuit that transfers data between different devices within an electronic circuit. A bus defines a set of rules and connections that every device connected to the bus must obey in order to effectively communicate over the bus. Examples of devices connected to the bus include, but are not limited to, processors, memories, and bridges for external systems, for example. Unlike point-to-point connections, a bus can connect several peripheral devices on the same set of wires. [0003] Many electronic systems include multiple buses to facilitate the transfer of data between multiple devices in parallel. In some systems, data may be transferred from a bus implementing one protocol to a bus implementing a different protocol. Connecting buses that implement different protocols can create compatibility iss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/14G06F13/40G06F21/78G06F21/85
CPCG06F12/1441G06F12/145G06F13/404G06F21/78G06F21/85
Inventor Y·阿贝尔S·艾哈迈德S·I·阿扎德
Owner XILINX INC