发明授权
US5761462A Method and system for supporting peripheral component interconnect (PCI)
peer-to-peer access across multiple PCI host bridges within a
data-processing system
失效
支持数据处理系统内多个PCI主机桥的外围组件互连（PCI）对等访问的方法和系统
- 专利标题： Method and system for supporting peripheral component interconnect (PCI) peer-to-peer access across multiple PCI host bridges within a data-processing system
- 专利标题（中）： 支持数据处理系统内多个PCI主机桥的外围组件互连（PCI）对等访问的方法和系统
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申请号： US766736申请日： 1996-12-13
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公开(公告)号： US5761462A公开(公告)日： 1998-06-02
- 发明人: Danny Marvin Neal , Steven Mark Thurber
- 申请人： Danny Marvin Neal , Steven Mark Thurber
- 申请人地址： NY Armonk
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： NY Armonk
- 主分类号： G06F13/36
- IPC分类号： G06F13/36 ; G06F13/40 ; G06F13/42 ; G06F13/00
摘要：
A method for supporting peer-to-peer access across separate Peripheral Component Interconnect (PCI) host bridges within a data-processing system is described. In accordance with the method and system of the present invention, during an access request from a PCI device, a first determination is made as to whether or not the access request is for a system memory attached to a system bus. In response to a determination that the access request is not for a system memory attached to the system bus, another determination is made as to whether or not the access request is for a PCI device under the same PCI host bridge as the requesting PCI device. In response to a determination that the access request is not for a PCI device under the same PCI host bridge as the requesting PCI device, executing added protocols for the support of PCI peer-to-peer access request across separate PCI host bridges within the data-processing system.
公开/授权文献
- US4672623A Cathode construction for a laser 公开/授权日：1987-06-09
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