System and method for DMA transfer of data in scatter/gather...

Details System and method for DMA transfer of data in scatter/gather... System and method for DMA transfer of data in scatter/gather...

2007-07-24

2007-07-24

Peyton, Tammara (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Direct memory accessing

C710S030000, C710S036000, C710S052000, C709S212000, C709S250000

Reexamination Certificate

active

10899196

ABSTRACT:
A method and system for DMA transfer of data in scatter/gather mode. A table of buffer descriptors may be used to determine the next buffer to be used when a current buffer storing data that has been transferred or will be transferred and may be used in automatic buffer switching, which does not require processor intervention. Entries in the table of buffer descriptors are entered programmatically. The method and system also provide for hardware writing to table of packet descriptors which describes location and size of incoming data and can indicate whether a packet of data straddles two or more buffers, thus decoupling packet sizes from buffer sizes.

REFERENCES:
patent: 5991817 (1999-11-01), Rowett et al.
patent: 6647438 (2003-11-01), Connor et al.
patent: 2003/0065735 (2003-04-01), Connor
patent: 2003/0120835 (2003-06-01), Kale et al.
IBM-TDB “Priority Scheme for Arithmetic Logic Unit and Dataflow Usage by P1394 Isochronous Hardware”, p. 477-480, vol. 38, Issue 2, Pub. Date-Feb. 1, 1995.

Affiliated with

Also associated with

Rating

System and method for DMA transfer of data in scatter/gather... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for DMA transfer of data in scatter/gather..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for DMA transfer of data in scatter/gather... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3781016