Computer system, bus controller, and bus fault handling...

Details Computer system, bus controller, and bus fault handling... Computer system, bus controller, and bus fault handling...

2005-01-13

2009-12-08

Le, Dieu-Minh (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S044000

Reexamination Certificate

active

07631226

ABSTRACT:
The present invention provides a PCI bus controller to prevent system down caused by a PCI bus fault and to enable a PCI device driver to handle all PCI bus faults. A bus signal controlling portion controls a transaction with a PCI device on a PCI bus according to a PCI bus protocol, treats the PCI bus as in a degradation state by lighting up a bus fault indicator when a bus fault is detected, and accepts a request of instructing the PCI device. A configuration portion has the bus fault indicator, updates a configuration register, and sends a reply transaction to an inbound controller portion. An arbitration portion arbitrates for a PCI bus and masks a request of use a bus from PCI device when the bus is in a degradation state.

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