TAGGING AND ARBITRATION MECHANISM IN AN INPUT/OUTPUT NODE OF COMPUTER SYSTEM

摘要

Tagging and arbitration mechanism in an input / output node of a computer system is disclosed. A mechanism for tagging commands in an input / output node of a computer system includes a tag circuit (510) configured to receive a plurality of control commands. The tag circuit may also be configured to generate a tag value for each of the control commands. The tagging mechanism may also include a buffer circuit (505) coupled to the tag circuit. The buffer circuit may include a plurality of the plurality of the buffers belonging to the virtual channel corresponding to each of the virtual channels, wherein each of the virtual channels for storing selected control commands. Further the tagging mechanism may include an arbitration circuit (520) configured to perform arbitration between said plurality of buffers based on the tag value for each of the control command, coupled to the buffer circuit. ; The tag circuit, an arbitration circuit, a buffer circuit, a virtual channel, the channel disclosure, non-disclosure channel