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:
Mar. 03, 2026
Filed:
Mar. 13, 2023
Sifive, Inc., San Mateo, CA (US);
Eric Andrew Gouldey, Fort Collins, CO (US);
Wesley Waylon Terpstra, San Mateo, CA (US);
Michael Klinglesmith, Chambéry, FR;
SiFive, Inc., Santa Clara, CA (US);
Abstract
Prefetch circuitry may be configured to transmit a message to prefetch one or more cache blocks of a group. The message may indicate an address for the group of cache blocks and a bit field that indicates the one or more cache blocks of the group to prefetch. In some implementations, the message may target a higher level cache to prefetch the one or more cache blocks, and the message may be transmitted to the higher level cache via a lower level cache. In some implementations, the message may target a higher level cache to prefetch the one or more cache blocks, the message may be transmitted to a lower level cache via a first command bus, and the lower level cache may forward the message to the higher level cache via a second command bus.