Xiao X Zheng

US Patent:

20130227196, Aug 29, 2013

Filed:

Feb 27, 2012

Appl. No.:

13/405957

Inventors:

Xiao Gang Zheng - Sunnyvale CA, US
Ming L. So - Danville CA, US

Assignee:

ADVANCED MICRO DEVICES, INC. - Sunnyvale CA

International Classification:

G06F 12/00
G06F 3/00
G06F 13/36

US Classification:

711103, 710306, 710 10, 711E12008

Abstract:

A circuit for use in a computing system including and a bus interface unit and an autoload controller. The autoload controller has an input to receive an initialization signal. In response to receiving the initialization signal, autoload controller searches for a signature using the bus interface unit and, in response to finding the signature at a signature address, loads a plurality of base addresses corresponding to a plurality of controllers from memory locations having a predetermined relationship to the address, and provides the plurality of base addresses to a control output thereof.

US Patent:

20130262726, Oct 3, 2013

Filed:

Mar 28, 2012

Appl. No.:

13/432178

Inventors:

Xiao Gang Zheng - Sunnyvale CA, US

Assignee:

ADVANCED MICRO DEVICES, INC. - Sunnyvale CA

International Classification:

G06F 13/26

US Classification:

710264

Abstract:

Methods and apparatuses are provided for servicing an interrupt in a computer system. The method includes a device driver receiving an interrupt request. The device driver is responsive to the interrupt request to store interrupt data in a portion of the memory. The interrupt data includes identification of at least one processor of the plurality of processors capable of servicing the interrupt request; priority of the interrupt request; a thread context; and an address for instructions to service the interrupt request. The device driver then instructs the peripheral device to issue a memory write to the plurality of processors so that each may determine if it can use the thread context and the instructions to service the interrupt. A computer system is provided with the hardware needed to perform the method.

US Patent:

20140310552, Oct 16, 2014

Filed:

Apr 15, 2013

Appl. No.:

13/862854

Inventors:

- Sunnyvale CA, US
Xiao Gang Zheng - Sunnyvale CA, US

Assignee:

Advanced Micro Devices, Inc. - Sunnyvale CA

International Classification:

G06F 1/32
G06F 3/06

US Classification:

713324, 711162, 711105

Abstract:

Current computer systems support sleep states such as sleep state S and sleep state S A system in sleep state S utilizes more power than one in sleep state S however, a system in sleep state S can resume function substantially faster than a system in sleep state S An idle system is often put into sleep state S rather than sleep state S because of the shorter resume time even though sleep state S utilizes more power. Embodiments include a reduced-power sleep state S that uses less power than sleep state S yet resumes function faster than sleep state S Embodiments reduce the power consumed by compressing and consolidating system context to fewer memory modules, and powering down unused memory modules. Embodiments thus avoid storing system content to non-volatile memory. Embodiments include waking the system by restoring system context in the reverse order to respective memory modules.