Destructive DMA lists
A buffer, a method, and a computer program product for DMA transfers are provided that are designed to save memory space within a local memory of a processor. The buffer is a return buffer with a portion reserved for DMA lists. A DMA controller accomplishes DMA transfers by: reading address elements...
Saved in:
| Main Authors | , , |
|---|---|
| Format | Patent |
| Language | English |
| Published |
26.05.2009
|
| Subjects | |
| Online Access | Get full text |
Cover
Loading…
| Abstract | A buffer, a method, and a computer program product for DMA transfers are provided that are designed to save memory space within a local memory of a processor. The buffer is a return buffer with a portion reserved for DMA lists. A DMA controller accomplishes DMA transfers by: reading address elements from a DMA list located in the DMA list portion; reading the corresponding data from system memory; and copying the corresponding data to the return buffer portion. This buffer saves space because when the buffer begins to fill up the corresponding return data can overwrite the data in the DMA list. Accordingly, the DMA list overlays on top of the return buffer, such that the return data can destruct the DMA list and the extra storage space for the DMA list is saved. |
|---|---|
| AbstractList | A buffer, a method, and a computer program product for DMA transfers are provided that are designed to save memory space within a local memory of a processor. The buffer is a return buffer with a portion reserved for DMA lists. A DMA controller accomplishes DMA transfers by: reading address elements from a DMA list located in the DMA list portion; reading the corresponding data from system memory; and copying the corresponding data to the return buffer portion. This buffer saves space because when the buffer begins to fill up the corresponding return data can overwrite the data in the DMA list. Accordingly, the DMA list overlays on top of the return buffer, such that the return data can destruct the DMA list and the extra storage space for the DMA list is saved. |
| Author | MINOR BARRY L JOHNS CHARLES R DAY MICHAEL N |
| Author_xml | – fullname: DAY MICHAEL N – fullname: JOHNS CHARLES R – fullname: MINOR BARRY L |
| BookMark | eNrjYmDJy89L5WQQdUktLikqTS7JLEtVcPF1VMjJLC4p5mFgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8aHB5qbGluYW5k5GxkQoAQDnoCJ7 |
| ContentType | Patent |
| DBID | EVB |
| DatabaseName | esp@cenet |
| DatabaseTitleList | |
| Database_xml | – sequence: 1 dbid: EVB name: esp@cenet url: http://worldwide.espacenet.com/singleLineSearch?locale=en_EP sourceTypes: Open Access Repository |
| DeliveryMethod | fulltext_linktorsrc |
| Discipline | Medicine Chemistry Sciences Physics |
| ExternalDocumentID | US7539787B2 |
| GroupedDBID | EVB |
| ID | FETCH-epo_espacenet_US7539787B23 |
| IEDL.DBID | EVB |
| IngestDate | Fri Jul 19 12:24:17 EDT 2024 |
| IsOpenAccess | true |
| IsPeerReviewed | false |
| IsScholarly | false |
| Language | English |
| LinkModel | DirectLink |
| MergedId | FETCHMERGED-epo_espacenet_US7539787B23 |
| Notes | Application Number: US20050252532 |
| OpenAccessLink | https://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20090526&DB=EPODOC&CC=US&NR=7539787B2 |
| ParticipantIDs | epo_espacenet_US7539787B2 |
| PublicationCentury | 2000 |
| PublicationDate | 20090526 |
| PublicationDateYYYYMMDD | 2009-05-26 |
| PublicationDate_xml | – month: 05 year: 2009 text: 20090526 day: 26 |
| PublicationDecade | 2000 |
| PublicationYear | 2009 |
| RelatedCompanies | INTERNATIONAL BUSINESS MACHINES CORPORATION |
| RelatedCompanies_xml | – name: INTERNATIONAL BUSINESS MACHINES CORPORATION |
| Score | 2.727637 |
| Snippet | A buffer, a method, and a computer program product for DMA transfers are provided that are designed to save memory space within a local memory of a processor.... |
| SourceID | epo |
| SourceType | Open Access Repository |
| SubjectTerms | CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING PHYSICS |
| Title | Destructive DMA lists |
| URI | https://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20090526&DB=EPODOC&locale=&CC=US&NR=7539787B2 |
| hasFullText | 1 |
| inHoldings | 1 |
| isFullTextHit | |
| isPrint | |
| link | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwY2BQSUsztQC1tXWNU5KSdU1SDM10LSzNDHUtU4Hqgd2P1CTwAaa-fmYeoSZeEaYRTAyZsL0w4HNCy8GHIwJzVDIwv5eAy-sCxCCWC3htZbF-UiZQKN_eLcTWRQ3WO7YEHV-i5uJk6xrg7-LvrObsbBsarOYXZAtslQP7S-ZOwNKaFdSKBh2z7xrmBNqUUoBco7gJMrAFAA3LKxFiYErNE2bgdIZdvCbMwOELne8WZmAHL9BMLgYKQjNhsQiDKKivCD71tSxVwcXXUSEHqLFYlEHBzTXE2UMXaFM83FfxocFwNxmLMbAAO_upEgwKlqbGwNAxtkwG5iuTZMNky7SUFAtgTWNibpKWYmBpLMkgidMYKTxy0gxckHkQ0Jo2GQYWoDNTZYHVaUmSHDggAILjd_Q |
| link.rule.ids | 230,309,786,891,25594,76906 |
| linkProvider | European Patent Office |
| linkToHtml | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwfV1LT4NAEJ409VFvijXWJwfDjShheeyBGIES1EIbC6Y3EpYlaWJqE4j-fWfXUr3odR-zj2R25tud-Rbgpq4tV_jaulmVTCeVYesutQ2dcmyP8IOXksA0Se04J08La9GDZZcLI3lCPyU5ImoUQ31v5Xm9_rnECmVsZXNbLrHo_T7KvFDr0DEV9CVa6Hvj2TScBloQePlcS1889MoRLzk-ntY7jiDnFZ7Tqy-SUta_LUp0CLszFLZqj6DHVwoMgu7jNQX2k817twJ7MkCTNVi4UcLmGIYCK0rW1w-uhsmD-oYdmyGo0TgLYh1HKrarKvL5dk7mCfQR7PNTUKll4u6YlKFeEWYwWleVi5aGOKSu7qg5gtGfYs7-qbuGQZwlk2LymD6fw8H3m4iIb7uAPk6ZX6JpbcsruSlfRn164Q |
| openUrl | ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Apatent&rft.title=Destructive+DMA+lists&rft.inventor=DAY+MICHAEL+N&rft.inventor=JOHNS+CHARLES+R&rft.inventor=MINOR+BARRY+L&rft.date=2009-05-26&rft.externalDBID=B2&rft.externalDocID=US7539787B2 |