Data storage device connected to a host system via a peripheral component interconnect express (PCIe) interface and method thereof

A host system and storage device technology, applied in the direction of memory address/allocation/relocation, instrument, electrical digital data processing, etc., can solve the problem of high cost

Inactive Publication Date: 2014-03-26
金万益有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, those skilled in the art understand that using such a hardware interface is very expensive in cost

Method used

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  • Data storage device connected to a host system via a peripheral component interconnect express (PCIe) interface and method thereof
  • Data storage device connected to a host system via a peripheral component interconnect express (PCIe) interface and method thereof
  • Data storage device connected to a host system via a peripheral component interconnect express (PCIe) interface and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0031] 1. A data storage device connected to a host system via a PCIe interface, wherein the host system includes a first memory, and the data storage device includes:

[0032] second memory;

[0033] a non-transparent bridge (NTB) coupled to the host system and having a first portion and a second portion; and

[0034] a processor, coupled between the NTB and the second memory,

[0035] Wherein, there is a first mapping relationship between the first part of the NTB and the first memory address space, and the processor writes the data in the first memory through the first mapping relationship according to the instruction of the host system in the second memory.

[0036] 2. The data storage device according to embodiment 1, wherein the processor also writes another data in the second memory into the second memory through the first mapping relationship according to the instruction of the host system.

[0037] 3. The data storage device according to embodiment 1, wherein the p...

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PUM

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Abstract

The invention provides a data storage device connected to a host system via a peripheral component interconnect express (PCIe) interface and method thereof. The data storage device is connected to a host system via a peripheral component interconnect express (PCIe) interface. The host system includes a first memory having a plurality of first memory space addresses. The data storage device comprises a second memory, a non-transparent bridge (NTB) and a processor. The NTB is coupled to the host system, and having a first portion and a second portion. The processor coupled between the NTB and the second memory, wherein the first portion of the NTB and the plurality of first memory space addresses have a first mapping relationship therebetween, and the processor writes a first datum in the first memory into the second memory via the first mapping relationship according to a command from the host system.

Description

technical field [0001] The present invention relates to a data storage device, in particular to a data storage device and method connected to a host system via a PCIe interface. Background technique [0002] Peripheral Component Interconnect Express (PCIe, Peripheral Component Interconnect Express) protocol belongs to a kind of computer bus protocol, which can be mainly applied to the interconnection inside the computer, and it can also be used for devices with external chipsets (for example, with display chips). Display card) interconnection, which can also be used to interconnect with input / output (I / O) devices around the computer, and can transmit data (such as multimedia data) with peripheral devices. Since PCIe is prevalent in the information technology industry, many applications of PCIe interfaces have also appeared in the technical field of data storage. [0003] see figure 1 , which shows a data storage device 110 connected to a host system 101 via a PCIe interfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/08G06F13/38
CPCG06F2213/0026G06F13/4027
Inventor 蔡文森
Owner 金万益有限公司
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