Invention Grant
US07886086B2 Method and apparatus for restricting input/output device peer-to-peer operations in a data processing system to improve reliability, availability, and serviceability
有权
用于限制数据处理系统中的输入/输出设备对等操作以提高可靠性，可用性和可服务性的方法和装置
- Patent Title: Method and apparatus for restricting input/output device peer-to-peer operations in a data processing system to improve reliability, availability, and serviceability
- Patent Title (中): 用于限制数据处理系统中的输入/输出设备对等操作以提高可靠性，可用性和可服务性的方法和装置
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Application No.: US11050352Application Date: 2005-02-03
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Publication No.: US07886086B2Publication Date: 2011-02-08
- Inventor: Maneesh Sharma , Steven Mark Thurber
- Applicant: Maneesh Sharma , Steven Mark Thurber
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Yee & Associates, P.C.
- Agent Diana R. Gerhardt
- Main IPC: G06F3/00
- IPC: G06F3/00 ; G06F13/36
Abstract:
A method and an apparatus are provided for restricting input/output device peer-to-peer operations in a data processing system to improve reliability, availability, and serviceability. A peer-to-peer (P2P) control logic is provided to perform a lookup of P2P lookup table entries. Each P2P lookup table entry comprises bus, device and function number fields, optional control fields, and an accept/reject bit. Upon receiving a communication request from a requesting I/O device, P2P control logic implemented in either a logical bridge or an I/O device identifies the requester ID of the request and determines if a match exists in the P2P lookup table entries. If a match is found and the accept/reject bit is enabled, I/O operations can be received from the requester.
Public/Granted literature
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