Apparatus to maximize buffer utilization in an I/O controller

Details Apparatus to maximize buffer utilization in an I/O controller Apparatus to maximize buffer utilization in an I/O controller

2008-04-30

2010-06-08

Kindred, Alford W (Department: 2181)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output data buffering

C710S029000, C710S057000, C710S310000

Reexamination Certificate

active

07734847

ABSTRACT:
An apparatus and method for maximizing buffer utilization in an I/O controller using credit management logic contained within the I/O controller. The credit management logic keeps track of the number of memory credits available in the I/O controller and communicates to a chipset connected to the I/O controller the amount of available memory credits. The chipset may then send an amount of data to the I/O controller equivalent to or less than the communicated available amount of memory credits to reduce the occurrence of a “retry” event. The amount of available memory credits is determined by comparing the available memory in each buffer within the I/O controller and designating that the “available” amount of memory for the I/O controller is an amount equivalent to the amount of memory contained in the buffer with the least amount of available memory. This “available” amount of I/O controller memory may then be converted into memory credits and communicated to the chipset.

REFERENCES:
patent: 5787072 (1998-07-01), Shimojo et al.
patent: 5974456 (1999-10-01), Naghshineh et al.
patent: 6009488 (1999-12-01), Kavipurapu
patent: 6240095 (2001-05-01), Good et al.
patent: 7069373 (2006-06-01), Teng
patent: 7421591 (2008-09-01), Sultenfuss et al.
patent: 2002/0150049 (2002-10-01), Collier et al.
patent: 2003/0223369 (2003-12-01), Anderson
patent: 2004/0024948 (2004-02-01), Winkler et al.
patent: 2005/0088445 (2005-04-01), Gonzalez et al.

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