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:
Apr. 26, 2005
Filed:
Feb. 20, 2001
John Macleod, Cambridge, MA (US);
John MacLeod, Cambridge, MA (US);
Stratus Technologies Bermuda Ltd., Hamilton, BM;
Abstract
A method and apparatus for input/output virtual address translation and validation assigns a range of memory to a device driver for its exclusive use. The device driver invokes system functionality for receiving a logical address and outputting a physical address having a length greater than the logical address. Another feature of the invention is a computer system providing input/output virtual address translation and validation for at least one peripheral device. In one embodiment, the computer system includes a scatter-gather table, an input/output virtual address cache memory associated with at least one peripheral device, and at least one device driver. In a further embodiment, the input/output virtual address cache memory includes an address validation cache and an address translation cache.