Method for allocating system resources in a hierarchical bus structure
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United States of America Patent
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Jul 7, 1998
Grant Date -
N/A
app pub date -
Apr 26, 1996
filing date -
Apr 26, 1996
priority date (Note) -
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Abstract
The system resources in a computer system having a multi-level, hierarchical bus structure are allocated by determining the address resource requirement of the devices and lower level PCI-PCI bridges, if any, subordinate to every higher level bridge by receiving address resource requirement information from each device and each lower level bridge, if any. Then, the address value of resource address requirement of the devices and lower level bridges requiring specific address allocation are sorted in an ascending order. Next, the size of resource address requirement of the devices and lower level bridges with non-specified address allocation is sorted in an descending order. Finally, the sorted list is grouped by an first fit algorithm to determine the resource allocation for each device within the bus hierarchy.
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