The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 2006
Filed:
Aug. 11, 2004
Shiraz A. Qureshi, Roseville, CA (US);
Martin O. Nicholes, Antelope, CA (US);
Shiraz A. Qureshi, Roseville, CA (US);
Martin O. Nicholes, Antelope, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A system and method for using memory mapped I/O (MMIO) to manage system devices is provided. A parent device in the ACPI namespace uses (MMIO) to identify the memory addresses of its children devices. An existing, but unused, construct of ACPI is used to pass the MMIO information through the operating system (OS) to the device drivers, enabling memory to be reserved by a device, and also remain hidden to the OS. The vendor defined resource data type for long information, also known as the 'vendor-long' descriptor, is used to pass the appropriate information through the OS.