Data reading method, device and data transmission system based on DMA engine

A data reading and engine technology, applied in the field of data reading, can solve the problem of high cost

Active Publication Date: 2022-03-15
BEIJING ZETTASTONE TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The main purpose of this application is to provide a data reading method, device, computer-readable storage medium, processor, and data transmission system based on a DMA engine, so as to solve the problem of using multiple DMA engines in the prior art to achieve multi-client access. high cost due to storage

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  • Data reading method, device and data transmission system based on DMA engine
  • Data reading method, device and data transmission system based on DMA engine

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Embodiment Construction

[0024] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0026] It should be noted that the terms "first" and "second...

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Abstract

The present application provides a data reading method, device and data transmission system based on a DMA engine. The method includes: receiving a read request command from a user terminal and buffering it in the first memory in a first order, and sending the read request command to the user terminal in the first order. For the order of request commands, the first memory corresponds to the user terminal one by one; the read request command is sent to the corresponding destination storage terminal, and the second memory is used to record the second order, and the second order is corresponding to the read request command received by the destination storage terminal In the order of the user end, the second memory corresponds to the destination storage end one by one; the returned data is cached to the third memory according to the second order, one destination storage end corresponds to multiple third memories, and the third memory corresponding to the destination storage end corresponds to the user end One-to-one correspondence; transmit the return data corresponding to the read request command to the client according to the first sequence. Compared with the prior art, the method reduces the number of DMA engines and interfaces, thereby reducing scheduling overhead.

Description

technical field [0001] The present application relates to the technical field of data reading, and in particular, relates to a DMA engine-based data reading method, device, computer-readable storage medium, processor, and data transmission system. Background technique [0002] The DMA engine is one of the most important data modules in the memory controller, and its performance optimization is very important. In the SSD controller, there is usually a need for multiple clients to read data from multiple storage terminals. In this case, multiple DMA read engines are generally required to participate in data reading. [0003] Coordination among individual clients also has an impact on overall DMA performance. [0004] In addition, the performance of the DMA read engine depends on the data receiving capability of the client side. [0005] The performance of the DMA read engine is directly related to the delay of returning data from the destination and the data receiving capabi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/28
CPCG06F13/28
Inventor 王涛
Owner BEIJING ZETTASTONE TECH CO LTD
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