Performing PCI access cycles through PCI bridge hub routing

Details Performing PCI access cycles through PCI bridge hub routing Performing PCI access cycles through PCI bridge hub routing

1998-09-01

2000-09-12

Sheikh, Ayaz R.

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus access regulation

710129, 710 8, 710104, G06F 1340, G06F 1300, G06F 300

Patent

active

061191914

ABSTRACT:
A method and implementing computer system is provided in which PCI CONFIG.sub.-- ADDRESS and CONFIG.sub.-- DATA conventions are maintained in a large computer system and each PCI Host Bridge (PHB) CONFIG.sub.-- ADDRESS register and each PHB CONFIG.sub.-- DATA register have separate and system-unique addresses. In one example, the operating system provides a service to translate the device driver's configuration operation to a particular bus and device in the system, to a particular CONFIG.sub.-- ADDRESS or CONFIG.sub.-- DATA register of the PHB which has that device under it. By using this method, the hierarchical system can use architecture-independent routing of addresses down to the PHB that contains the appropriate CONFIG.sub.-- ADDRESS and CONFIG.sub.-- DATA registers.

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