CN107315699A - A kind of TF cards - Google Patents
A kind of TF cards Download PDFInfo
- Publication number
- CN107315699A CN107315699A CN201710437665.2A CN201710437665A CN107315699A CN 107315699 A CN107315699 A CN 107315699A CN 201710437665 A CN201710437665 A CN 201710437665A CN 107315699 A CN107315699 A CN 107315699A
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- Prior art keywords
- function
- cards
- command
- order
- list item
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- 230000006870 function Effects 0.000 claims abstract description 70
- 238000013507 mapping Methods 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000005055 memory storage Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 230000015654 memory Effects 0.000 description 4
- 238000013519 translation Methods 0.000 description 2
- 230000014616 translation Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/16—Handling requests for interconnection or transfer for access to memory bus
- G06F13/1668—Details of memory controller
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
- G06F12/023—Free address space management
- G06F12/0238—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory
- G06F12/0246—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory in block erasable memory, e.g. flash memory
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/72—Details relating to flash memory management
- G06F2212/7201—Logical to physical mapping or translation of blocks or pages
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Storage Device Security (AREA)
Abstract
The invention discloses a kind of TF cards, it is characterised in that divides at least partially that location space is as expanding function order in the logical address space of TF cards, and expanding function order accesses TF cards according to the form of normal read write command；Increase remaps module in TF cards, for analyzing whether normal read write command is expanded function order, if it is according to expanding function command triggers TF card operation commands set in advance；If otherwise accessing TF card data spaces according to order request.In the case of increasing Mapping modules and two data channel, not only compatible various functions specified in original agreement, while improving the security of data access, further increase the convenience of addition New function.
Description
Technical field
The present invention relates to storage device field, more particularly to a kind of TF cards.
Background technology
Current TF cards Host is conducted interviews using LBA to the data of TF cards, and LBA is one-dimensional linear growth；It is such
There is following Railway Project in access mode：1st, LBA is 32bit and the corresponding data units of LBA are 512bytes, then meaning
2T data can be accessed by Host maximums, but not have the TF cards of such Large Copacity in actual applications, so result in phase
When a part of LBA is invalid, when Host removes to attempt to access this LBA, Card will return to mistake；2nd, the data on Card are
It is expected that, i.e., identical LBA read-writes must be identical data, and this make it that data are stolen on BUS becomes simple.
Simultaneously when TF cards need expanding function, newly-increased order is generally required；But due to Command limited length, because
The number of this order has the upper limit, then, different in face of different clients require only by increasing order firmware can be caused to answer
Miscellaneous degree rises, and is difficult quick exploitation and the management of firmware version.
The content of the invention
For disadvantages described above, present invention aims at the expanded function for the TF cards for how easily realizing expansion standard life
Order.
A kind of TF cards are proposed in order to solve the problem above present invention, it is characterised in that in the logical address space of TF cards
Location space is as expanding function order at least partially for division, and expanding function order is accessed according to the form of normal read write command
TF cards；Increase remaps module in TF cards, for analyzing whether normal read write command is expanded function order, if it is presses
According to expanding function command triggers TF card operation commands set in advance；If otherwise accessing TF card data according to order request
Space.
Described TF cards, it is characterised in that described remap at least includes one using nonvolatile storage storage in module
Policy Table, the Policy Table carries out Configuration Online or prestoring by main frame, and the Policy Table at least includes extension work(
The information that can be ordered.
Described TF cards, it is characterised in that described to remap whether module analyzes normal read write command by analysis state machine
For expanded function order, it is specially：By analysis state machine by the logical address of incoming normal read write command in strategy
Table carries out lookup matching, corresponding expanded function order is identified if matching, and the expanded function order is sent to
The functional processing module Function of TF cards.
Described TF cards, it is characterised in that the controller Controller of TF cards receives the instruction of main frame, by instruction
The command function for meeting TF card standard agreements directly issues and is given to functional processing module Function, it would be possible to include expanded function
The instruction of order, which is issued to, to be remapped in module Mapping.
Described TF cards, it is characterised in that the controller Controller is to be realized or real by hardware by depositing software
It is existing；Parameter transmission is carried out by register group or FIFO when being realized by hardware.
Described TF cards, it is characterised in that the analysis state machine at least includes：Idle condition Idle, dispatch state
Dispatch, switching state Switch, configuration status Configure and processing state Process.
Described TF cards, it is characterised in that the Policy Table at least includes：Command index Command, initial logical address
Start LBA, end logical address EndLBA, expanded function command index Function, switching command Switch Command.
In the case that the present invention is by increasing Mapping modules and two data channel, not only compatible original agreement
Specified in various functions, while improve the security of data access, further increase the convenience of addition New function.
Brief description of the drawings
Fig. 1 is composition and data path schematic diagram inside TF cards；
Fig. 2 is the composition schematic diagram of Mapping modules；
Fig. 3 is the composition schematic diagram of analysis state machine.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is composition and data path schematic diagram, wherein Controller inside TF cards：Handle TF card external bus protocols
Inter-related task, response main frame Host sends order；Receive and dispatch Host solicited messages；Translate Host orders；Number is received and dispatched by SD Bus
According to.Function：For realizing function and user's request defined in agreement, including meet TF card standards command function and
Expanding function order.The Mapping newly increased：Realize Command+LBA and user data space, system space, self-defined work(
Mapping between energy, user's request.NandFlash：For storing user data.SystemSpace：Internal system space, is used
In storage system related data.
TF cards include 5 data paths：Channel 1, Channel 2, Channel 3, Channel 4 and Channel
5.Wherein：Channel 1：Order and data channel after Controller translations.This passage is compatibility standard TF cards association
Occupation mode basic LBA defined in view (also referred to as SD agreements).Channel 2：Order after Controller translations
And data channel, this passage is the order data passage of the read-write non-user data defined in agreement.Channel 3：
The order data passage for transferring to Function modules to be handled is needed after Mapping.Channel 4：Needed after Mapping
Access NandFlash order data passage.Channel 5：Function modules need to access SystemSpace command number
According to passage.
Fig. 2 is the composition schematic diagram of Mapping modules；Fig. 3 is the composition schematic diagram of analysis state machine.
Wherein order and logical address Commands＆LBA is after Controller Receiving Hosts are instructed and parsed
The LBA information of Command information and correlation.Command Index command indexs are without departing from SD agreement prescribed limits, but about
Can be with self-defining function in the case of setting；LBA range such as SD protocol definitions.This module can use software to realize can also
Realized using hardware：For hard-wired mode register can be used to carry out data transfer, FIFO can also be used to carry out
Transmission.
Strategy Table Policy Tables：Wherein at least is deposited a default policy Default strategy strategy and used
Configured in solution sketch form；When can not be found in Policy Table correspondence list item when according to the regulation progress of SD agreements at
Reason.This table should use non-volatile memory medium to realize, such as norflash, nandflash, tcam (ternary content
Addressable memory are a kind of three-state content addressing memories) etc..Policy Table includes but is not limited to following content：Order
Index Command, starting LBA Start LBA, end LBA End LBA, feature index Function, switching command
Switch Command。
Core-Logic logic analysis modules are the modules of Mapping modules.This module is used to analyze Commands＆LBA
With the relation between Strategy Table, and Functions＆data and processing are exported and for being interacted with Nand Flash
Operation＆data information.This module needs to realize but be not limited to following function：Analysis state machine, tactful table index is patrolled
Volume, tactful ruling logic.
Analysis state machine is specifically including but not limited to idle condition Idle, dispatch state Dispatch, switching state
Switch, configuration status Configure and processing state Process.
Idle：
Entry condition：It is electric on TF cards,
Built-in function：Poll is used for the module for transmitting the Commands＆LBA of Controller parsings,
Exit criteria：The Commands＆LBA of Controller parsings is obtained, into Dispatch states；
Dispatch：
Entry condition：Idle Zhuan Tai ＆＆Commands＆LBA information,
Built-in function：Regulative strategy table index lookup logic corresponding strategies list item, regulative strategy ruling logic selection is used
Tactful list item,
Exit criteria：Without list item matching, need to carry out function switching into Configure states, or matching list item, enter
Enter Switch states, or matching list item switches without function, into Process states；
Switch：
Entry condition：Dispatch Zhuan Tais ＆Function is numbered,
Built-in function：Numbered and ordered according to Function and carry data, related soft or hard module is configured,
Exit criteria：Receive the Command orders defined in tactful list item；
Process：
Entry condition：List item is matched without function to switch,
Built-in function：Data are carried according to order and correspondence list item representation function carries out associative operation,
Exit criteria：Operation is completed.Policy Table's index logic is according to the difference of Policy Table's storage medium, and realization is included but not
It is limited to following manner：
1. Policy Table's storage medium is NorFlash or NandFlash, then need partly or entirely to copy contents in table
Enter in internal memory, carry out retrieval using software mode or hardware mode afterwards
2. the storage medium of Policy Table is TCAM, TCAM can be carried out content matching lookup in itself, be software without volume
The exploitation of algorithm.
The realization of tactful ruling logic includes but is not limited to following manner：
1st, matched using lookup first.The list item that ruling logic is always obtained using searching for the first time carries out respective handling.
2nd, using latest configuration list item.Ruling logic always carries out respective handling using the list item of latest configuration.
3rd, usage history list item.Ruling logic needs to record ruling results one or many in the past, and in lookup result
Compare, selection performance conventional in the past carries out respective handling.
Functions&data：If it is remaining to carry out that the result after Core-Logic parsings demonstrates the need for Function modules
Lower processing, Core-Logic organizes Functions＆data information to be sent to Function modules.
Above disclosed is only an embodiment of the present invention, can not limit the interest field of sheet with this certainly,
One of ordinary skill in the art will appreciate that all or part of flow of above-described embodiment is realized, and according to the claims in the present invention institute
The equivalent variations of work, still fall within the scope that the present invention is covered.
Claims (8)
1. a kind of TF cards, it is characterised in that divided in the logical address space of TF cards at least partially location space as expansion
Command function, expanding function order accesses TF cards according to the form of normal read write command；Increase remaps module in TF cards, uses
Whether it is expanded function order in analyzing normal read write command, if it is according to expanding function command triggers TF set in advance
Card operation command；If otherwise accessing TF card data spaces according to order request.
2. TF cards according to claim 1, it is characterised in that described to remap that at least to include a use in module non-easily
The Policy Table of memory storage is lost, the Policy Table carries out Configuration Online by main frame or prestored, and the Policy Table is extremely
Include the information of expanded function order less.
3. TF cards according to claim 2, it is characterised in that the module that remaps analyzes normal by analysis state machine
Whether read write command is expanded function order, is specially：By analysis state machine by incoming normal read write command logically
Location information carries out lookup matching in Policy Table, identifies corresponding expanded function order if matching, and by the extension work(
The functional processing module Function for being sent to TF cards can be ordered.
4. TF cards according to claim 3, it is characterised in that the controller Controller of TF cards receives the finger of main frame
Order, the command function that TF card standard agreements are met in instruction is directly issued and is given to functional processing module Function, it would be possible to
Instruction comprising expanded function order, which is issued to, to be remapped in module Mapping.
5. TF cards according to claim 4, it is characterised in that the controller Controller is to be realized by depositing software
Or realized by hardware；Parameter transmission is carried out by register group or FIFO when being realized by hardware.
6. the TF cards according to claim 1 to 5 any one, it is characterised in that the analysis state machine at least includes：It is empty
Not busy state I dle, dispatch state Dispatch, switching state Switch, configuration status Configure and processing state
Process。
7. TF cards according to claim 6, it is characterised in that the Policy Table at least includes：Command index Command, rises
Beginning logical address Start LBA, end logical address End LBA, expanded function command index Function, switching command
Switch Command。
8. TF cards according to claim 7, it is characterised in that each state of the analysis state machine is defined as follows：
Idle：
Entry condition：It is electric on TF cards,
Built-in function：Poll is used for the module for transmitting the Commands＆LBA of Controller parsings,
Exit criteria：The Commands＆LBA of Controller parsings is obtained, into Dispatch states；
Dispatch：
Entry condition：Idle Zhuan Tai ＆＆Commands＆LBA information,
Built-in function：Regulative strategy table index lookup logic corresponding strategies list item, regulative strategy ruling logic selection uses strategy
List item,
Exit criteria：Without list item matching, need to carry out function switching into Configure states, or matching list item, enter
Switch states, or matching list item switch without function, into Process states；Switch：
Entry condition：Dispatch Zhuan Tais ＆Function is numbered,
Built-in function：Numbered and ordered according to Function and carry data, related soft or hard module is configured,
Exit criteria：Receive the Command orders defined in tactful list item；
Process：
Entry condition：List item is matched without function to switch,
Built-in function：Data are carried according to order and correspondence list item representation function carries out associative operation,
Exit criteria：Operation is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710437665.2A CN107315699B (en) | 2017-06-12 | 2017-06-12 | TF card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710437665.2A CN107315699B (en) | 2017-06-12 | 2017-06-12 | TF card |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107315699A true CN107315699A (en) | 2017-11-03 |
| CN107315699B CN107315699B (en) | 2021-04-23 |
Family
ID=60182220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710437665.2A Expired - Fee Related CN107315699B (en) | 2017-06-12 | 2017-06-12 | TF card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107315699B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060106949A1 (en) * | 2004-11-12 | 2006-05-18 | Emulex Design & Manufacturing Corporation | Legacy-compatible extended command input-output control block |
| CN101326483A (en) * | 2005-12-08 | 2008-12-17 | 桑迪士克股份有限公司 | Media card with command pass through mechanism |
| US20090182919A1 (en) * | 2005-12-08 | 2009-07-16 | Robert Chin-Tse Chang | Media Card Command Pass Through Methods |
| CN101882058A (en) * | 2010-05-26 | 2010-11-10 | 孟智平 | Method for virtually dividing storage device into a plurality of devices |
| CN102207912A (en) * | 2010-07-07 | 2011-10-05 | 无锡中科龙泽信息科技有限公司 | Flash memory equipment for realizing partition function on equipment side and access method of flash memory equipment |
| CN103064641A (en) * | 2013-02-05 | 2013-04-24 | 威盛电子股份有限公司 | Non-volatile storage device and operating method thereof |
| CN104951412A (en) * | 2015-06-06 | 2015-09-30 | 华为技术有限公司 | Storage device capable of being accessed through memory bus |
| CN205302306U (en) * | 2015-12-31 | 2016-06-08 | 北京兆易创新科技股份有限公司 | Embedded system |
-
2017
- 2017-06-12 CN CN201710437665.2A patent/CN107315699B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060106949A1 (en) * | 2004-11-12 | 2006-05-18 | Emulex Design & Manufacturing Corporation | Legacy-compatible extended command input-output control block |
| CN101326483A (en) * | 2005-12-08 | 2008-12-17 | 桑迪士克股份有限公司 | Media card with command pass through mechanism |
| US20090182919A1 (en) * | 2005-12-08 | 2009-07-16 | Robert Chin-Tse Chang | Media Card Command Pass Through Methods |
| CN101882058A (en) * | 2010-05-26 | 2010-11-10 | 孟智平 | Method for virtually dividing storage device into a plurality of devices |
| CN102207912A (en) * | 2010-07-07 | 2011-10-05 | 无锡中科龙泽信息科技有限公司 | Flash memory equipment for realizing partition function on equipment side and access method of flash memory equipment |
| CN103064641A (en) * | 2013-02-05 | 2013-04-24 | 威盛电子股份有限公司 | Non-volatile storage device and operating method thereof |
| CN104951412A (en) * | 2015-06-06 | 2015-09-30 | 华为技术有限公司 | Storage device capable of being accessed through memory bus |
| CN205302306U (en) * | 2015-12-31 | 2016-06-08 | 北京兆易创新科技股份有限公司 | Embedded system |
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| CN107315699B (en) | 2021-04-23 |
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