System for detection and routing of platform events in a...

Details System for detection and routing of platform events in a... System for detection and routing of platform events in a...

2005-06-21

2005-06-21

Browne, Lynne H. (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

C713S300000, C713S320000, C713S323000, C710S301000, C710S302000, C710S304000

Reexamination Certificate

active

06910142

ABSTRACT:
A system for providing notification, to the associated operating system, of removal and replacement of I/O devices during operation of a multiprocessor computer system running multiple operating systems. The system includes a plurality of cells, each containing multiple RISC processors, low-level I/O firmware, a local service processor, scratch RAM, external registers, a memory and I/O manager, and interfacing hardware. Each partition comprises one or more cells and runs its own operating system (OS). Each cell is connected to a peripheral backplane containing a plurality of peripheral I/O card slots via a switch on the system backplane, which also connects the cell to a supervisory processor, which sends card slot status information to the appropriate cell. Each I/O (typically PCI) card slot has an associated latch which provides an indication, to the supervisory processor, that a platform event has occurred. Platform events include inserting or removing an I/O (peripheral device interface) card to/from a card slot, and opening an access panel that provides access to the I/O cards.

REFERENCES:
patent: 5784576 (1998-07-01), Guthrie et al.
patent: 6138194 (2000-10-01), Klein et al.
patent: 6181030 (2001-01-01), Carpenter et al.
patent: 6286066 (2001-09-01), Hayes et al.
patent: 6658507 (2003-12-01), Chan
patent: 6771510 (2004-08-01), Novak et al.

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