CN110362274A - A kind of NVMe controller, networked storage devices and system - Google Patents
A kind of NVMe controller, networked storage devices and system Download PDFInfo
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- CN110362274A CN110362274A CN201910576040.3A CN201910576040A CN110362274A CN 110362274 A CN110362274 A CN 110362274A CN 201910576040 A CN201910576040 A CN 201910576040A CN 110362274 A CN110362274 A CN 110362274A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0604—Improving or facilitating administration, e.g. storage management
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/067—Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
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Abstract
This application discloses a kind of NVMe controllers, are applied to networked storage devices, comprising: are packaged and unpack module, buffer queue module, instruction arbitration scheduler module, instruction read module, command process module, interface module, instruction respond module.The program is realized based on hardware logic, supports transmitting-receiving, processing and the response of the order to networking NVMe storage agreement, have modular construction it is clear, convenient for being integrated in the feature in large-scale network system.In addition, being acted on corresponding with the effect of above-mentioned NVMe controller present invention also provides a kind of networked storage devices and system.
Description
Technical field
This application involves field of storage, in particular to a kind of NVMe controller, networked storage devices and networking storage
System.
Background technique
NVMe is a kind of to store equipment exclusively for flash-type and the agreement that designs is broadly divided into two in NVMe agreement
Point: host side Host and controller end Controller.
However, the realization of current Controller is all the own design scheme of solid state hard disk manufacturer, and at this stage
Controller design or traditional NVMe agreement based on PCIe bus, and association is stored for newer NVMe networking
View lacks corresponding support.
Summary of the invention
The purpose of the application is to provide a kind of NVMe controller, networked storage devices and networking storage system, to
Solve the problems, such as that traditional NVMe controller does not support NVMe networking to store agreement.Concrete scheme is as follows:
In a first aspect, being applied to networked storage devices this application provides a kind of NVMe controller, comprising:
Be packaged and unpack module: the network protocol message for sending to the host received unpacks, and obtains NVMe life
It enables；It is also used to be packaged the NVMe order for being sent to the host, obtains network protocol message；
Buffer queue module: for caching the NVMe order for unpacking and obtaining；
Instruction arbitration scheduler module: for the NVMe order in buffer queue module described in poll, according to priority to institute
NVMe order is stated to be scheduled；
Described instruction read module: for reading NVMe order, parsing from the buffer queue module according to scheduling result
The NVMe order, and the NVMe order after parsing is sent to command process module；
Described instruction processing module: for determining the type of the NVMe order of described instruction read module transmission；If described
NVMe order is Admin order, then executes corresponding processing operation, and the mark that processing is completed according to the Admin order
Or related data is sent to instruction respond module；If the NVMe order is read write command, the read write command is sent to
Interface module；
The interface module: for realizing the conversion between NVMe order and Flash order, and the read-write after conversion is ordered
Order is sent to Flash, in order to which the Flash reads data or to reading from data cache module is write according to the read write command
Data are written according to cache module, and read-write complement mark is sent to described instruction respond module；
Described instruction respond module: mark or related data for being completed according to the processing generate corresponding NVMe and ring
It should order, or corresponding NVMe response command be generated according to the read-write complement mark, and the NVMe response command is sent
Module is unpacked to the packing, in order to which the packing unpacks the module packing NVMe response command and is sent to the master
Machine.
Preferably, the Admin order includes following any one or more order: register manipulation order, log page
Face obtains order, acquisition of information order.
Preferably, further includes:
Register configuration module；
Described instruction processing module is used to call the register to match when the NVMe order is register manipulation order
It sets module and executes corresponding configuration operation.
Preferably, described instruction processing module is specifically used for:
When the NVMe order is write order, the data buffer storage that the host is sent caches mould to write data
Block, and the write order is sent to the interface module, in order to which the write order is converted to Flash by the interface module
Write order, and be sent to the Flash with log-on data write operation.
Preferably, described instruction read module is also used to:
NVMe order is read from the buffer queue module, and according to the information code judgement in the NVMe order
Whether NVMe order is correct；If incorrect, for the NVMe Command Flags error flag, and it is sent to described instruction response mould
Block, in order to which described instruction respond module generates corresponding NVMe response command according to the NVMe order after label, and will be described
NVMe response command is sent to the packing and unpacks module to be sent to the host.
Second aspect, this application provides a kind of networked storage devices, comprising: a kind of NVMe control as described above
Device.
The third aspect, it to further include one kind as described above that this application provides a kind of networking storage systems, including host
Networked storage devices.
A kind of NVMe controller provided herein is applied to networked storage devices, comprising: packing unpacking module,
Buffer queue module, instruction arbitration scheduler module, instruction read module, command process module, interface module, instruction response mould
Block.The program is realized based on hardware logic, supports transmitting-receiving, processing and the response of the order to networking NVMe storage agreement, tool
Standby modular construction is clear, convenient for being integrated in the feature in large-scale network system.
In addition, present invention also provides a kind of networked storage devices and system, effect and above-mentioned NVMe controller
Act on corresponding, which is not described herein again.
Detailed description of the invention
It, below will be to embodiment or existing for the clearer technical solution for illustrating the embodiment of the present application or the prior art
Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is only this Shen
Some embodiments please for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram of NVMe controller embodiment provided herein；
Fig. 2 is the process flow diagram that a kind of NVMe controller embodiment provided herein instructs Admin；
Fig. 3 is a kind of process flow diagram of NVMe controller embodiment provided herein to read write command.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, with reference to the accompanying drawings and detailed description
The application is described in further detail.Obviously, described embodiments are only a part of embodiments of the present application, rather than
Whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall in the protection scope of this application.
Traditional NVMe controller does not support NVMe networking to store agreement, its application is caused to be restricted.It is asked for this
Topic, this application provides a kind of NVMe controller, networked storage devices and networking storage systems, realize to networking
NVMe stores transmitting-receiving, processing and the response of the order of agreement, and it is clear to have a modular construction, convenient for being integrated in large-scale network system
In feature.
A kind of NVMe controller embodiment provided by the present application is introduced below, controls implement body referring to Fig. 1, NVMe
Include:
It is packaged and unpacks module 11 (Packer/Depacker): the network protocol message for being sent to the host received
It is unpacked, obtains NVMe order；It is also used to be packaged the NVMe order for being sent to the host, obtains network protocol report
Text；
Buffer queue module 12 (Submission Queue Buffer): for caching the NVMe order for unpacking and obtaining；
Instruction arbitration scheduler module 13 (Command Schedule&Arbitration): for buffer queue described in poll
NVMe order in module is scheduled the NVMe order according to priority；
Described instruction read module 14 (Command Fetch): for according to scheduling result from the buffer queue module
NVMe order is read, parses the NVMe order, and the NVMe order after parsing is sent to command process module；
Described instruction processing module 15 (Command Excute): the NVMe sent for determining described instruction read module
The type of order；If the NVMe order is Admin order, corresponding processing operation is executed according to the Admin order, and
Mark or related data that processing is completed are sent to instruction respond module；If the NVMe order is read write command, by institute
It states read write command and is sent to interface module；
The interface module 16 (NVMe&FLASH Interface): for realizing between NVMe order and Flash order
Conversion, and the read write command after conversion is sent to Flash, in order to the Flash according to the read write command from writing number
According to cache module 17 (Write Data Buffer) read data or to read data cache module 18 (Read Data Buffer)
Data are written, and read-write complement mark is sent to described instruction respond module；
Described instruction respond module 19 (Command Completion): mark or phase for being completed according to the processing
It closes data and generates corresponding NVMe response command, or corresponding NVMe response command is generated according to the read-write complement mark, and
The NVMe response command is sent to the packing and unpacks module, is packaged the NVMe sound in order to which the packing unpacks module
It should order and be sent to the host.
NVMe is a kind of to store equipment exclusively for flash-type and the agreement that designs is broadly divided into two in NVMe agreement
Point: host side Host and controller end Controller.Wherein, host mainly completes generation and the hair of NVMe protocol command
It send；Controller is typically found in inside storage equipment, such as supports the solid state hard disk of NVMe agreement, and it is hard that controller is also referred to as solid-state
The master control of disc apparatus, the main unloading for completing NVMe order and the interaction with the storage unit in equipment.
It is understood that the instruction transmission between host and controller is attached on network medium, it is additionally required one layer
Network protocol message is packaged and unpacks module 11 for realizing the unpacking to network protocol message, or data are packaged as network association
Discuss message.
The various NVMe instruction issued by host, which is located at, to be sent in buffer queue, and buffer queue module 12 stores these and refers to
It enables.The priority of different NVMe instructions is different, and instruction arbitration scheduler module 13 judges to send buffer queue by way of poll
The priority of middle instruction is simultaneously scheduled.
The data that Flash is written for caching host in data cache module 17 are write, after the completion of corresponding write order processing,
Flash reads data from data cache module 17 is write.Data cache module 18 is read for caching the number that host is read from Flash
According to, after the completion of corresponding read command and response command, by read data cache module 18 data be sent to Host.
Interface module 16 is specifically set between NVMe controller and Flash, it is main complete NVMe protocol instructions with
Conversion operation between the instruction of Flash controller.
As a kind of specific embodiment, further includes: register configuration module 20.Admin command function may reflect
Some registers are penetrated, relevant register will be read and write according to Admin instruction.That is, described instruction processing module is used for
When the NVMe order is register manipulation order, the register configuration module 20 is called to execute corresponding configuration operation.
In conclusion the major function that NVMe controller is completed is the finger of networking NVMe storage agreement in the present embodiment
The generation and transmission that reception and processing, the processing of data, the response of order instruct.NVMe includes sending buffer queue
(Submission Queue, SQ) and buffer queue (Completion Queue, CQ) is received, wherein the instruction of SQ is host hair
It is sent to NVMe controller, the instruction of CQ is that NVMe controller returns to host.Correspondingly, NVMe controller will be received from SQ
It instructs and handles, returning response instruction is into CQ after the completion.
The NVMe controller of base in this present embodiment, the treatment process of NVMe instruction include: that host issues and is attached to network
The NVMe instruction transmitted in agreement, the packing unpacking module 11 first passed around in NVMe controller are unpacked, and standard is extracted
NVMe instruction be put into the SQ buffer queue of buffer queue module 12, then instruction arbitration 13 decision instruction of scheduler module it is excellent
First grade, the high instruction of priority first carry out, and instruction read module 14 analyzes the instruction, and are handled according to different instruction type call instruction
Module 15 carries out different process flows, and after the completion of instruction processing, instruction respond module 19 is according to the flag information for handling completion
Or related data generates the response instruction of NVMe standard, is sent to packing and unpacks module 11 and is packaged into network protocol message and is sent to
Host.
As it can be seen that presently, there are following problems: the realization of NVMe controller is often own design side, solid state hard disk manufacturer
Case, and controller design or traditional NVMe agreement based on PCIe bus at this stage, for newer NVMe network
Change storage agreement NVMe-OF and lacks corresponding support.
In view of the above-mentioned problems, present embodiments providing a kind of NVMe controller, i.e., one kind is in networking storage system
The hardware implementations of NVMe controller, which is realized using hardware logic, is deployed in SSD equipment, in traditional NVMe
Increase the primary support to networking NVMe storage agreement (NVMe over Fabric, NVMe-OF) order in agreement.It realizes
The reception and processing, the processing of data, the generation of response command and transmission of NVMe order, the structure of the controller module are clear
It is clear, higher performance can be obtained, is conducive in the acceleration system of catenet integrated.
According to the instruction type of NVMe agreement, the specific implementation of the present embodiment is divided into the processing and read-write of Admin instruction
The process flow of both types instruction is introduced in the processing of instruction separately below.
Admin instruction is divided into three kinds by the present embodiment: instruction, log page acquisition instruction (Get to register manipulation
Log Page) and acquisition of information instruction (Identify).Fig. 2 is the process flow diagram of Admin instruction, with reference to Fig. 2, the present embodiment
In to Admin instruction treatment process include:
Step S20, instruction read module 14 obtains an Admin instruction from the SO of caching Queue module 12；
Step S21, confirm whether the instruction is correct according to the information code that the instruction carries, if incorrect, enter step
S22, otherwise step S23；
Step S22, labeled as error message and it will be sent to instruction respond module 19, instruction respond module 19 generates one
Response instruction, which returns to host, indicates instruction errors；
Step S23, instruction read module 14 continues to analyze the instruction, the type of confirmation Admin instruction, to instruct processing mould
Block 15 will carry out different disposal according to different types；
Step S24, if it is the instruction to register manipulation, 15 allocating register configuration module 20 of command process module is complete
At corresponding configuration；
Step S25, if it is log page acquisition instruction, command process module 15 reads corresponding from log page storage
Information；
Step S26, it is instructed if it is Identify, the 4KB data information that command process module 15 records Identify
It takes out；
Step S27, after instruction processing, instruction respond module 19 is collected into relevant information and data, and is packaged into mark
Quasi- NVMe response instruction is sent to transmission buffer queue, to be sent to host.
Read write command, that is, I/O instruction, in the present embodiment, either host be written into Flash data or host from
Data are read in Flash, are required to carry out reception, parsing and the conversion of NVMe instruction by NVMe controller.
Fig. 3 is that the process flow diagram of read write command includes: to the treatment process of read write command in the present embodiment with reference to Fig. 3
Step S30, instruction read module 14 obtains a read write command from the SQ of caching Queue module 12；
Step S31, confirm whether the read write command is correct according to the information code that instruction carries, it is such as incorrect, it enters step
Otherwise S32 enters step S33；
Step S32, the read write command labeled as error message and is sent to instruction respond module 19, instructs respond module
19, which generate a response instruction, which returns to host, indicates instruction errors；
Step S33, instruction read module 14 continues to analyze the instruction, and confirmation instruction is to read or write type, to instruct processing
Module 15 will be according to reading or writing carry out different disposal；If the instruction is reading instruction, S34 is entered step, S37 is otherwise entered step；
NVMe reading instruction is converted to Flash controller read command by step 34, interface module 16, and then is sent to Flash；
Step 35, Flash read data deposit read data cache module 18 in, and return read operation whether Success Flag；
Standard is packaged into according to reading data and flag bit call instruction respond module 19 after step 36, the reception of NVMe controller
NVMe response instruction be sent to transmission buffer queue, and then be sent to host；
Step 37, the data buffer storage for sending host are to writing in data cache module 17；NVMe is write finger by interface module 16
Order is converted to Flash controller write order, and then is sent to Flash；
Step 38, Flash receive data be written corresponding position, and return write operation whether Success Flag；
Step 39, NVMe controller are packaged into the NVMe of standard according to flag bit call instruction respond module 19 after receiving
Response instruction is sent to transmission buffer queue, and then is sent to host.
In addition, present invention also provides a kind of networked storage devices, including a kind of NVMe controller as described above.
Finally, present invention also provides a kind of networking storage system, including host, it further include a kind of net as described above
Networkization stores equipment.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with it is other
The difference of embodiment, same or similar part may refer to each other between each embodiment.For being filled disclosed in embodiment
For setting, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part
Explanation.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
Scheme provided herein is described in detail above, specific case used herein is to the application's
Principle and embodiment is expounded, the present processes that the above embodiments are only used to help understand and its core
Thought；At the same time, for those skilled in the art, according to the thought of the application, in specific embodiment and application range
Upper there will be changes, in conclusion the contents of this specification should not be construed as limiting the present application.
Claims (7)
1. a kind of NVMe controller, which is characterized in that be applied to networked storage devices, comprising:
Be packaged and unpack module: the network protocol message for sending to the host received unpacks, and obtains NVMe order；Also
For being packaged to the NVMe order for being sent to the host, network protocol message is obtained；
Buffer queue module: for caching the NVMe order for unpacking and obtaining；
Instruction arbitration scheduler module: for the NVMe order in buffer queue module described in poll, according to priority to described
NVMe order is scheduled；
Described instruction read module: for reading NVMe order from the buffer queue module according to scheduling result, described in parsing
NVMe order, and the NVMe order after parsing is sent to command process module；
Described instruction processing module: for determining the type of the NVMe order of described instruction read module transmission；If the NVMe
Order is Admin order, then the mark or phase for executing corresponding processing operation according to the Admin order, and processing being completed
It closes data and is sent to instruction respond module；If the NVMe order is read write command, the read write command is sent to interface
Module；
The interface module: for realizing the conversion between NVMe order and Flash order, and the read write command after conversion is sent out
Send to Flash, in order to the Flash according to the read write command from write data cache module read data or to data are read it is slow
Data are written in storing module, and read-write complement mark is sent to described instruction respond module；
Described instruction respond module: mark or related data for being completed according to the processing generate corresponding NVMe response life
It enables, or corresponding NVMe response command is generated according to the read-write complement mark, and the NVMe response command is sent to institute
It states packing and unpacks module, in order to which the packing unpacks the module packing NVMe response command and is sent to the host.
2. NVMe controller as described in claim 1, which is characterized in that the Admin order include following any one or
Multinomial order: register manipulation order, log page obtain order, acquisition of information order.
3. NVMe controller as claimed in claim 2, which is characterized in that further include:
Register configuration module；
Described instruction processing module is used to call the register configuration mould when the NVMe order is register manipulation order
Block executes corresponding configuration operation.
4. NVMe controller as described in claim 1, which is characterized in that described instruction processing module is specifically used for:
The NVMe order be write order when, the data buffer storage that the host is sent to write data cache module, and
The write order is sent to the interface module, in order to which the write order is converted to writing for Flash by the interface module
Order, and the Flash is sent to log-on data write operation.
5. the NVMe controller as described in claim 1-4 any one, which is characterized in that described instruction read module is also used
In:
NVMe order is read from the buffer queue module, and judges that the NVMe is ordered according to the information code in the NVMe order
It whether correct enables；If incorrect, for the NVMe Command Flags error flag, and it is sent to described instruction respond module, with
Corresponding NVMe response command is generated according to the NVMe order after label convenient for described instruction respond module, and the NVMe is rung
It should order and be sent to the packing unpacking module to be sent to the host.
6. a kind of networked storage devices characterized by comprising a kind of NVMe as described in claim 1-5 any one
Controller.
7. a kind of networking storage system, which is characterized in that further include a kind of network as claimed in claim 6 including host
Change storage equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910576040.3A CN110362274A (en) | 2019-06-28 | 2019-06-28 | A kind of NVMe controller, networked storage devices and system |
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| CN201910576040.3A CN110362274A (en) | 2019-06-28 | 2019-06-28 | A kind of NVMe controller, networked storage devices and system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111124959A (en) * | 2019-12-12 | 2020-05-08 | 北京计算机技术及应用研究所 | Hardware unloading method for processing NVMe protocol management command |
| CN111966303A (en) * | 2020-09-02 | 2020-11-20 | 深圳大普微电子科技有限公司 | Data processing method, system, equipment and readable storage medium |
| CN112256601A (en) * | 2020-10-19 | 2021-01-22 | 凌云光技术股份有限公司 | Data access control method, embedded storage system and embedded equipment |
| CN113496749A (en) * | 2020-04-02 | 2021-10-12 | 深圳星火半导体科技有限公司 | Storage performance test analysis method and system |
| CN113608784A (en) * | 2021-08-19 | 2021-11-05 | 湖南国科微电子股份有限公司 | NVMe control device and method |
| CN114721978A (en) * | 2022-03-04 | 2022-07-08 | 成都储迅科技有限责任公司 | Method and system for accelerating execution speed of Nand Flash control command |
| CN115586867A (en) * | 2022-09-27 | 2023-01-10 | 中科驭数（北京）科技有限公司 | NVMe controller |
-
2019
- 2019-06-28 CN CN201910576040.3A patent/CN110362274A/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111124959A (en) * | 2019-12-12 | 2020-05-08 | 北京计算机技术及应用研究所 | Hardware unloading method for processing NVMe protocol management command |
| CN111124959B (en) * | 2019-12-12 | 2021-08-27 | 北京计算机技术及应用研究所 | Hardware unloading method for processing NVMe protocol management command |
| CN113496749A (en) * | 2020-04-02 | 2021-10-12 | 深圳星火半导体科技有限公司 | Storage performance test analysis method and system |
| CN111966303A (en) * | 2020-09-02 | 2020-11-20 | 深圳大普微电子科技有限公司 | Data processing method, system, equipment and readable storage medium |
| CN111966303B (en) * | 2020-09-02 | 2024-03-19 | 深圳大普微电子科技有限公司 | Data processing method, system, equipment and readable storage medium |
| CN112256601A (en) * | 2020-10-19 | 2021-01-22 | 凌云光技术股份有限公司 | Data access control method, embedded storage system and embedded equipment |
| CN113608784A (en) * | 2021-08-19 | 2021-11-05 | 湖南国科微电子股份有限公司 | NVMe control device and method |
| CN113608784B (en) * | 2021-08-19 | 2024-05-03 | 湖南国科微电子股份有限公司 | NVMe control device and method |
| CN114721978A (en) * | 2022-03-04 | 2022-07-08 | 成都储迅科技有限责任公司 | Method and system for accelerating execution speed of Nand Flash control command |
| CN114721978B (en) * | 2022-03-04 | 2023-08-25 | 成都储迅科技有限责任公司 | Method and system for accelerating execution speed of Nand Flash control command |
| CN115586867A (en) * | 2022-09-27 | 2023-01-10 | 中科驭数（北京）科技有限公司 | NVMe controller |
| CN115586867B (en) * | 2022-09-27 | 2023-08-22 | 中科驭数（北京）科技有限公司 | NVMe controller |
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Application publication date: 20191022 |