Apparatus and method for combining writes to I/O

Details Apparatus and method for combining writes to I/O Apparatus and method for combining writes to I/O

2007-04-17

2007-04-17

Park, Ilwoo (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output command process

C710S008000, C710S009000, C710S052000

Reexamination Certificate

active

10402125

ABSTRACT:
An apparatus and method for outbound I/O write-combining are described. In one embodiment the method includes the detection of a write transaction request directed to an I/O device. Once detected, it is determined whether an address associated with the detected write transaction falls within a predetermined write-combinable range of the memory mapped I/O space assigned to the I/O device. When the transaction address falls within a write-combinable range, data associated with the detected write transaction is stored within a buffer corresponding to the transaction address. Accordingly, one embodiment of the present invention provides write-combining for data written to an I/O port associated with a memory mapped I/O address space.

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Raoul A.F. Bhoedjang, et al., “User-Level Network Interface Protocols”, IEEE, Nov. 1998, pp. 53-60.

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