Title:
A bridge device, a method for the same, a storage device, and a program
Document Type and Number:
Japanese Patent JP5989818
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To realize high data transfer performance while reducing a load on a CPU, etc.SOLUTION: In a bridge device as one embodiment of the invention, a receiving unit receives, from an external device, first transfer information in which a read address of a data storage device is specified. A first processing unit generates a first command for instructing readout of data on the basis of the first transfer information, and outputs the first command to a first controller. A data buffer holds the data read out by the first controller. A second processing unit generates a second command for instructing a second controller to read the data held by the data buffer, and outputs the second command to the second controller. If a predetermined exceptional event occurs, the data buffer outputs dummy data for the DMA transfer of the second controller so as to properly complete the DMA transfer without outputting the data held in the data buffer, and then notifies the external device of the occurrence of the exceptional event.
Inventors:
Nobuhiko Sugazawa
Yuta Kobayashi
Masataka Goto
Yuta Kobayashi
Masataka Goto
Application Number:
JP2015014707A
Publication Date:
September 07, 2016
Filing Date:
January 28, 2015
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G06F13/36; G06F13/00; G06F13/12; G06F13/28
Domestic Patent References:
| JP2006085592A | ||||
| JP2005115545A | ||||
| JP2005070992A | ||||
| JP2002259326A |
Foreign References:
| WO2012070319A1 | ||||
| US20060075291 | ||||
| US20140059286 | ||||
| CN103201725A | ||||
| US20050076165 | ||||
| US20050044283 |
Attorney, Agent or Firm:
Hirohito Katsunuma
Takeshi Sekine
Suzuki Junsei
Takeshi Sekine
Suzuki Junsei
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