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:
Jun. 21, 2016
Filed:
Mar. 02, 2012
William Henry Flanders, Austin, TX (US);
Ramamoorthy Guru Prasadh, Austin, TX (US);
Ashok Kumar Tummala, Austin, TX (US);
Jamshed Jalal, Austin, TX (US);
Phanindra Kumar Mannava, Austin, TX (US);
William Henry Flanders, Austin, TX (US);
Ramamoorthy Guru Prasadh, Austin, TX (US);
Ashok Kumar Tummala, Austin, TX (US);
Jamshed Jalal, Austin, TX (US);
Phanindra Kumar Mannava, Austin, TX (US);
ARM Limited, Cambridge, GB;
Abstract
A data processing apparatus () comprises a first protocol domain A configured to operate under a write progress protocol and a second protocol domain B configured to operate under a snoop progress protocol. A deadlock condition is detected if a write target address for a pending write request issued from the first domain A to the second domain B is the same as a snoop target address or a pending snoop request issued from the second domain B to the first domain A. When the deadlock condition is detected, a bridge () between the domains may issue an early response to a selected one of the deadlocked write and snoop requests without waiting for the selected request serviced. The early response indicates to the domain that issued the selected request that the selected request has been serviced, enabling the other request to be serviced by the issuing domain.