Invention Grant
- Patent Title: Peripheral devices and methods for transferring incoming data status entries from a peripheral to a host
- Patent Title (中): 将外部设备和方法从外设传输到主机
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Application No.: US10676758Application Date: 2003-10-01
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Publication No.: US07689738B1Publication Date: 2010-03-30
- Inventor: Robert Alan Williams , Jeffrey Dwork
- Applicant: Robert Alan Williams , Jeffrey Dwork
- Applicant Address: US CA Sunnyvale
- Assignee: Advanced Micro Devices, Inc.
- Current Assignee: Advanced Micro Devices, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Eschweiler & Associates, LLC
- Main IPC: G06F3/00
- IPC: G06F3/00 ; G06F13/00

Abstract:
Methods and systems are provided for reducing partial cache writes in transferring incoming data status entries from a peripheral device to a host. The methods comprise determining a lower limit on a number of available incoming data status entry positions in an incoming data status ring in the host system memory, and selectively transferring a current incoming data status entry to the host system memory using a full cache line write if the lower limit is greater than or equal to a first value. Peripheral systems are provided for providing an interface between a host computer and an external device or network, which comprise a descriptor management system adapted to determine a lower limit on a number of available incoming data status entry positions in an incoming data status ring in a host system memory, and to selectively transfer a current incoming data status entry to the host system memory using a full cache line write if the lower limit is greater than or equal to a first value.
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