Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2006-05-04
2010-11-16
Baderman, Scott T (Department: 2114)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
Reexamination Certificate
active
07836328
ABSTRACT:
A method and apparatus for recovering from errors occurring during system bus transactions. An input/output device such as a network interface unit (NIU) issues read and write operations across a meta interface coupling the device to host bus (glue) logic. The host bus logic translates the operations into system bus transactions. The device maintains a set of reusable identifiers for identifying the operations, and a table maintained by the device or the host bus logic maps the operation identifiers to transaction identifiers identifying the system bus transactions spawned to perform the operations. If a bus transaction encounters an unrecoverable error, the host bus logic reports the error to the device and drops any further data received from other bus transactions performed for the same operation. The device marks the operation's identifier as dirty, to prevent its reuse. The operation identifier may be reused after software clears the error condition.
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Kandimalla Babu R.
Puri Rahoul
Srinivsan Arvind
Taneja Nimita
Watkins John E.
Baderman Scott T
Oracle America Inc.
Park Vaughan Fleming & Dowler LLP
Patel Jigar
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