Dynamically configuring resources for cycle translation in a...

Details Dynamically configuring resources for cycle translation in a... Dynamically configuring resources for cycle translation in a...

2005-11-29

2005-11-29

Myers, Paul R. (Department: 2111)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output process timing

C710S061000, C710S315000, C710S104000, C710S029000, C713S600000

Reexamination Certificate

active

06970957

ABSTRACT:
A method and system that enables customized computer machines to be more readily developed by removing the function of resource translation out of the hardware abstraction layer (HAL). A machine manufacturer describes a machine in firmware, such as accordance with the Advanced Configuration and Power Interface (ACPI) specification, using ACPI machine language (AML). Operating system components such as a Plug and Play (PnP) manager in the kernel, in conjunction with an ACPI driver, interpret the description information and locate resources (bus bridges) for which translation is needed. For any arbitrary bus architecture or CPU to PCI bridge implementation that can be expressed, e.g., in ACPI firmware, the invention provides a translator external to the HAL. In one implementation, a PnP driver communicates with the ACPI driver and various drivers in driver stacks via I/O request packets (IRPs) to look for resource translators. The ACPI driver analyzes the machine description and returns a translator if found for such a resource. The resource is then configured to output cycles based on the translator.

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