CN109800194A - SDIO interface data transmission method and device based on linux system - Google Patents
SDIO interface data transmission method and device based on linux system Download PDFInfo
- Publication number
- CN109800194A CN109800194A CN201910066723.4A CN201910066723A CN109800194A CN 109800194 A CN109800194 A CN 109800194A CN 201910066723 A CN201910066723 A CN 201910066723A CN 109800194 A CN109800194 A CN 109800194A
- Authority
- CN
- China
- Prior art keywords
- dma
- data
- control register
- module
- address
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 58
- 238000012546 transfer Methods 0.000 claims abstract description 54
- 239000000872 buffer Substances 0.000 claims description 21
- 238000013507 mapping Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 241000208340 Araliaceae Species 0.000 claims description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 235000008434 ginseng Nutrition 0.000 claims description 2
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- ZKGNPQKYVKXMGJ-UHFFFAOYSA-N N,N-dimethylacetamide Chemical compound CN(C)C(C)=O.CN(C)C(C)=O ZKGNPQKYVKXMGJ-UHFFFAOYSA-N 0.000 description 1
- 238000013506 data mapping Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
Landscapes
- Communication Control (AREA)
Abstract
This application discloses SDIO interface data transmission methods and device based on linux system, method: the address of sg linked list data is obtained, and will be in the corresponding write-in DMA control register chained list module of the control parameter of the address of multiple groups sg linked list data and multiple groups dma controller；The control parameter of the address of sg linked list data and dma controller is sent to DMA data transfer module by one DMA control register；The data in address are read, and data and control parameter are sent to SD card；It transmits completion signal and gives DMA control register chained list module；Remaining DMA control register data transmission procedure is completed in DMA control register chained list module, and DMA control register chained list module sends interrupt signal.DMA control register is changed to DMA control register chained list module, modifies the driving of SDIO interface, reduce data copy process, reduces linux system resource consumption by the application.
Description
Technical field
This application involves the technical fields of linux system, more particularly to the SDIO interface data transmission based on linux system
Method and device.
Background technique
SDIO (Secure Digital Input and Output, secure digital input-output card) interface is a kind of simultaneous
Hold the interface of a variety of storage cards and SDIO interface equipment.SDIO interface has very strong scalability and faster transmission speed,
Support plug and play, be widely used in the various movements such as mobile phone, PAD and fixed equipment, had at present camera, recorder,
A variety of SDIO interface equipments such as scanner, GPS, bluetooth, wireless network card.
The SDIO interface transmission method of existing linux system includes two kinds, the first is the transmission method of low side chip,
It is for second the transmission method of high-end chip.The transmission method of low side chip is software auxiliary transmission, i.e., one is opened up in driving
Buffer area of the block space as SDIO interface.The transmission method of high-end chip is hardware transport, i.e., directly uses biggish SDIO
Interface DMA (Direct Memory Access, direct memory access) hardware module transmits data.
For first method, when low side chip transmission of data, needs software auxiliary transmission.And when software auxiliary transmission
It needs data copy to buffer area, then the data of buffer area is transferred to DMA control register.The number carried out under this method
It needs to consume a large amount of cpu resource according to transmission, increases chip power-consumption, and then increase the resource loss of linux system.For second
Kind of method, when high-end chip transmission of data, need using hardware transport, and the power dissipation ratio software auxiliary transmission power consumption of hardware transport
It is low.But the chip module of high-end chip is big with respect to low side chip module, can improve the development cost of chip.When low side chip exists
The problem of chip power-consumption, needs to propose to solve the problem of this with high-end chip and high-end chip brings cost
SDIO interface data transmission method and device based on linux system.
Summary of the invention
This application provides SDIO interface data transmission methods and device based on linux system, to solve existing Linux
The high technical problem of the resource loss of the linux system of the SDIO interface transmission method of system.
To solve the above-mentioned problems, the application provides technical solution below:
SDIO interface data transmission method based on linux system, method include: the address of acquisition sg linked list data, and
By the corresponding write-in DMA control register chained list mould of the control parameter of the address of multiple groups sg linked list data and multiple groups dma controller
In block；One DMA control register sends out the control parameter of the address of one group of sg linked list data of preservation and one group of dma controller
Give DMA data transfer module；DMA data transfer module reads the data in the address of sg linked list data, and by the number of reading
It is sent to SD card according to the control parameter with dma controller, a DMA control register data transmission procedure is completed；It will be transmitted across
Journey completes signal and is sent to DMA control register chained list module；Remaining DMA control is posted in DMA control register chained list module
Latch data transmission process is completed, and DMA control register chained list module sends interrupt signal；The interruption that interrupt module will receive
Signal is sent to the interrupt control unit of SDIO interface, and interrupt control unit control data are sent completely.
Optionally, remaining DMA control register data transmission procedure is completed in DMA control register chained list module, DMA
It controls register chained list module and sends interrupt signal, comprising: DMA control register chained list module detects remaining DMA control and posts
Storage is with the presence or absence of the address of sg linked list data and the control parameter of dma controller；If it exists, continue to send until having sent
At；If it does not exist, then DMA control register chained list module sends interrupt signal.
Optionally, the address of the sg linked list data of kernel spacing is obtained, and by the address of multiple groups sg linked list data and multiple groups
In the corresponding write-in DMA control register chained list module of the control parameter of dma controller, comprising: obtain from Linux user's space
It is transmitted to the address of the data buffer zone sg linked list data of kernel spacing；It will according to the mapping relations of dma controller and sg chained list
Sg chain table address carries out mapping processing, and by treated the address of multiple groups sg linked list data and the control of multiple groups dma controller
Parameter correspondence is written in DMA control register chained list module.
Optionally, it after DMA data transfer module transfers data to SD card, sends and terminates to the SD card of SDIO interface peripherals
Order.
Optionally, after DMA data transfer module transfers data to SD card, the DMA transfer module of SDIO interface is sent out automatically
It loses one's life and enables and the automatic control parameter for calculating DMA control register.
SDIO interface data transmission device based on linux system, including dma controller and interrupt module, dma controller
It is communicated to connect with interrupt module, dma controller includes DMA control register chained list module and DMA data transfer module, in which:
DMA control register chained list module and DMA data transfer module communicate to connect, DMA control register chained list module and interruption mould
Block communication connection, interrupt module are connect with interrupt control unit.
Optionally, DMA control register chained list module includes multiple DMA control registers, a DMA control register packet
Include the address of one group of sg linked list data and the control parameter of one group of DMA control register.
The utility model has the advantages that obtaining kernel spacing this application provides the SDIO interface data transmission method based on linux system
Sg linked list data address, and by the control parameter of the address of multiple groups sg linked list data and multiple groups dma controller correspondence write
Enter in DMA control register chained list module.The application reduces the process that kernel buffers copy the buffer area buffer to, effectively
Save the resource loss of linux system.Since a data block can only be once sent to SD card by DMA transfer module, if
SDIO interface will send the data of entire sg chained list, and DMA transfer module just needs repeatedly to send data to SD card.It is specific to send
Process is as follows: a DMA control register joins the control of the address of one group of sg linked list data of preservation and one group of dma controller
Number is sent to DMA data transfer module.DMA data transfer module reads the data in the address of sg linked list data, and will read
Data and the control parameter of dma controller be sent to SD card, a DMA control register data transmission procedure is completed.It will hair
It passes through journey completion signal and is sent to DMA control register chained list module；Remaining DMA control in DMA control register chained list module
Register data transmission process processed is completed, and DMA control register chained list module sends interrupt signal.In the application, DMA transfer mould
Block repeatedly sends data to SD card, rewrites control parameter and sg chain table address to DMA control register chained list without software
Module.The process that data were filled in and copied in repetition can be effectively reduced in this transmission process, reduces the resource damage of linux system
Consumption.The interrupt signal received is sent to the interrupt control unit of SDIO interface, the entire number of interrupt control unit control by interrupt module
Terminate according to transmission process.The SDIO interface data transmission method of linux system provided by the present application controls the DMA of SDIO interface
Register processed is changed to DMA control register chained list module, while modifying the SDIO interface driver of linux system, reduces data
Copy reduces the resource consumption of linux system, promotes linux system performance.Due to being not necessarily to upgrade SDIO interface, and can save
Save cost caused by the upgrading of SDIO interface.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the flow chart for the SDIO interface data transmission method based on linux system that application provides；
Fig. 2 is the structural schematic diagram for the SDIO interface data transmission device based on linux system that application provides；
Detailed description of the invention: 1-DMA controller, 2- interrupt module, 11-DMA control register chained list module, and 12-DMA data pass
Defeated module.
Specific embodiment
It is the SDIO interface data transmission method provided by the present application based on linux system referring to Fig. 1.The application provides
SDIO interface data transmission method based on linux system, DMA control register chained list module include that multiple DMA controls are posted
Storage, DMA control register chained list module can fill in address and the DMA control parameter of entire sg data link table.The transmission side
Method includes:
S01: the address of sg linked list data is obtained, and by the control of the address of multiple groups sg linked list data and multiple groups dma controller
In the corresponding write-in DMA control register chained list module of parameter processed.
S011: the address that the data buffer zone sg linked list data of kernel spacing is transmitted to from Linux user's space is obtained；
S012: the address of sg linked list data is carried out according to the mapping relations of dma controller and the address of sg linked list data
Mapping processing, and the control parameter of the address of treated sg linked list data and dma controller correspondence is written to DMA control
In multiple DMA control registers in register chained list module.
In the kernel-driven of existing linux system, there is the buffer area buffer, driving can be the data in sg chained list
It copies the buffer area buffer to, then the address of the buffer area buffer is filled up in DMA control register.In the application, obtain
The address of the sg linked list data of kernel spacing, and by the control parameter of the address of multiple groups sg linked list data and multiple groups dma controller
In corresponding write-in DMA control register chained list module.The application reduces kernel buffers and copies the buffer area buffer to
Process effectively saves the resource loss of linux system.
DMA control register chained list module includes the address of multiple groups sg linked list data and the control ginseng of multiple groups dma controller
Number, a DMA control register includes the address of one group of sg linked list data and the control parameter of one group of dma controller.DMA control
The control parameter of device include DMA transfer module it is maximum allowable read length, this DMA transfer module read data length and
The size of SDIO interface transmission data.The maximum allowable length that reads of DMA transfer module is the data that DMA transfer module maximum is sent
Length is a definite value.The data length that this DMA transfer module is read is the data length that this sends.SDIO interface passes
The size of transmission of data is the minimum data length that each SDIO interface is sent in SDIO interface protocol, the mainly number of SDIO interface
It is that data block is sent according to transmission, the data block length of each different agreement in SDIO interface is different.
Since a data block can only be once sent to SD card by DMA transfer module, SDIO interface will send entire sg chain
The data of table, DMA transfer module just need repeatedly to send data to SD card.Specific data transmission procedure is as follows:
S02: one DMA control register is by the control of the address of one group of sg linked list data of preservation and one group of dma controller
Parameter processed is sent to DMA data transfer module.
S03:DMA data transmission module reads the data in the address of sg linked list data, and the data of reading and DMA are controlled
The control parameter of device processed is sent to SD card, and a DMA control register data transmission procedure is completed.
After DMA data transfer module sends the data to SD card, transmission ending life is sent to the SD card of SDIO interface peripherals
It enables.This belongs to the protocol section of SDIO, and when being that reply sends data, DMA transfer module sends one piece of data modification from each
Data are sent several times for DMA transfer module.If the address of each sg linked list data in the address of entire sg linked list data
In data block size be 16K, that write-in dma controller be 4 16K data block, dma controller just need to be divided into 4 times hair
It send, sends the data that data length is 16k every time.When sending for the first time, DMA transfer module, which prenotices SD card, will receive data
Length is the data of 64k and the address of transmission.After DMA transfer module sends 16k data to SD card for the first time, SD card notice
DMA transfer end-of-module sends data, and DMA transfer module first time transmission process terminates.
The DMA transfer module of the application sends data to SD card and is divided into multiple transmission, since each DMA transfer module is sent
Data length and address to SD card be it is different, after DMA data transfer module sends the data to SD card, SDIO interface
DMA transfer module sends order and the automatic control parameter for calculating dma controller automatically.
S04: transmission process completion signal is sent to DMA control register chained list module.
Since a data block can only be once sent to SD card by DMA transfer module, SDIO interface will send entire sg chain
The data of table, DMA transfer module just need repeatedly to send.Since DMA control register chained list module preserves entire sg chained list
Address and DMA control parameter, it is therefore desirable to every time be sent completely after only detection DMA control register chained list module whether
There is actual parameter, confirms whether the data of entire sg chained list are sent completely.
The transmission process that S05:DMA controls remaining DMA control register in register chained list module is completed, DMA control
Register chained list module sends interrupt signal.
S051:DMA control register chained list module detects remaining DMA control register with the presence or absence of sg linked list data
The control parameter of address and dma controller；
S052: if it exists, continue to send until being sent completely；
S053: if it does not exist, then DMA control register chained list module sends interrupt signal.
In the application, since a data block can only once be sent SD card by DMA transfer module, DMA transfer module is each
It need to only detect in DMA control register chained list module after having sent with the presence or absence of actual parameter, confirm the data of this sg chained list
Whether it is sent completely, rewrites control parameter and sg chain table address to DMA control register chained list without software.It is this
Sending method can be effectively reduced repetition and fill in data and copy the process of data, simplifies data transmission procedure, reduces Linux
The resource loss of system.
S06: the interrupt signal received is sent to the interrupt control unit of SDIO interface, interrupt control unit control by interrupt module
Data transmission procedure processed terminates.
The interrupt signal received is sent to the interrupt control unit of SDIO interface by the signal of interrupt module, SDIO interface
Total interrupt control unit of interrupt control unit transmitting chip.
In the application, the address of sg linked list data is obtained, and by the address of multiple groups sg linked list data and multiple groups dma controller
The corresponding write-in DMA control register chained list module of control parameter in.The application reduces kernel buffers and copies to
The process of the buffer area buffer effectively saves the resource loss of linux system.Since DMA transfer module once can only be by one
A data block is sent to SD card, and SDIO interface will send the data of entire sg chained list, and DMA transfer module just needs repeatedly to send number
According to SD card.Specific transmission process is as follows: a DMA control register is by the address and one of one group of sg linked list data of preservation
The control parameter of group dma controller is sent to DMA data transfer module.The ground of DMA data transfer module reading sg linked list data
Data in location, and the control parameter of the data of reading and dma controller is sent to SD card, a DMA control register number
It is completed according to transmission process.Transmission process completion signal is sent to DMA control register chained list module；DMA control register chain
Remaining DMA control register data transmission procedure is completed in table module, and DMA control register chained list module, which is sent, interrupts letter
Number.In the application, DMA transfer module repeatedly sends data to SD card, fills out control parameter and sg chain table address again without software
To DMA control register chained list module.The process that data were filled in and copied in repetition can be effectively reduced in this transmission process, subtracts
The resource loss of few linux system.The interrupt signal received is transferred to the interrupt control unit of SDIO interface by interrupt module, in
Disconnected controller control data are transmitted, and entire data transmission procedure is completed.The SDIO interface of linux system provided by the present application
The DMA control register of SDIO interface is changed to DMA control register chained list module, while modifying Linux by data transmission method
The SDIO interface driver of system, reduces the copy of data, reduces the resource consumption of linux system, promotes linux system performance.
Due to being not necessarily to upgrade SDIO interface, and cost caused by the upgrading of SDIO interface can be saved.The application can make in it is low
Hold the SDIO interface hardware of chip in the case where not upgrading, by existing SDIO interface hardware and to linux system
The modification of SDIO interface driver reduces system resources consumption during SDIO interface data transmission.
The application is additionally provided and is based on other than proposing the SDIO interface data transmission method based on linux system
The SDIO interface data transmission device of linux system.It referring to fig. 2, is the SDIO interface provided by the present application based on linux system
The structural schematic diagram of data transmission device, it is known that the transmitting device includes dma controller 1 and interrupt module 2, dma controller 1 with
Interrupt module 2 communicates to connect, and dma controller 1 includes DMA control register chained list module 11 and DMA data transfer module 12,
In: DMA control register chained list module 11 and DMA data transfer module 12 communicate to connect, DMA control register chained list module 11
It is communicated to connect with interrupt module 2, interrupt module 2 is connect with interrupt control unit.Use process: the first step obtains kernel spacing
The address of sg linked list data, and the control parameter of the address of multiple groups sg linked list data and multiple groups dma controller is corresponded into write-in DMA
DMA control register chained list module 11 in controller 1.Second step, DMA control register chained list module 11 is by sg linked list data
Address and the control parameter of dma controller be sent to the DMA data transfer module 12 in dma controller 1.Third step, DMA number
The data in the address of sg linked list data are read according to transmission module 12, and by the control parameter of the data of reading and dma controller
It is sent to SD card, completes a transmission process.4th step, DMA control register chained list module 11 are transferred according to what is received
It is transmitted at signal, then to the data in remaining DMA control register.5th step, DMA control register chained list module 11
Data be sent completely after, interrupt signal is sent to interrupt module 2, interrupt module 2 by DMA control register chained list module 11
Interrupt signal is sent to interrupt control unit again.
In order to reduce data copy process, in the present embodiment, DMA control register chained list module 11 includes multiple
DMA control register, a DMA control register include one group of sg linked list data address and one group of DMA control register
Control parameter.Since DMA control register chained list module 11 includes address and the multiple groups DMA control deposit of multiple groups sg linked list data
The control parameter of device, in data transmission procedure each time, a DMA control register is by the address of one group of sg linked list data
DMA data transfer module 12 is sent to the control parameter of one group of DMA control register.
The above is only the specific embodiment of the application, is made skilled artisans appreciate that or realizing this Shen
Please.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (7)
1. the SDIO interface data transmission method based on linux system, which is characterized in that the described method includes:
The address of sg linked list data is obtained, and the control of the address of sg linked list data and multiple groups dma controller described in multiple groups is joined
In the corresponding write-in DMA control register chained list module of number；
One DMA control register is by the control of the address of sg linked list data and one group of dma controller described in one group of preservation
Parameter processed is sent to DMA data transfer module；
The DMA data transfer module reads the data in the address of the sg linked list data, and by data of reading and described
The control parameter of dma controller is sent to SD card, and a DMA control register data transmission procedure is completed；
Transmission process completion signal is sent to the DMA control register chained list module；
The remaining DMA control register data transmission procedure is completed in the DMA control register chained list module, described
DMA control register chained list module sends interrupt signal；
The interrupt signal received is transferred to the interrupt control unit of SDIO interface, the interruption control by the interrupt module
Device control data transmission procedure terminates.
2. the method according to claim 1, wherein remaining DMA in the DMA control register chained list module
It controls register data transmission process to complete, the DMA control register chained list module sends interrupt signal, comprising:
The DMA control register chained list module detects remaining DMA control register with the presence or absence of the sg linked list data
The control parameter of address and dma controller；
If it exists, continue to send until being sent completely；
If it does not exist, then the DMA control register chained list module sends interrupt signal.
3. the method according to claim 1, wherein it is described obtain kernel spacing sg linked list data address,
And the control parameter of the address of sg linked list data and multiple groups dma controller described in multiple groups is corresponded to write-in DMA control register
In chained list module, comprising:
Obtain the address that the data buffer zone sg linked list data of kernel spacing is transmitted to from linux user's space；
The address of the sg linked list data is carried out at mapping according to the mapping relations of dma controller and the address of sg linked list data
Reason, and the control parameter of the address of sg linked list data described in treated multiple groups and multiple groups dma controller correspondence is written to
In DMA control register chained list module.
4. the method according to claim 1, wherein the DMA data transfer module sends the data to SD card
Afterwards, the SD card of Xiang Suoshu SDIO interface peripherals, which is sent, terminates order.
5. the method according to claim 1, wherein the DMA data transfer module sends the data to SD card
Afterwards, the DMA transfer module of the SDIO interface sends order automatically and calculates the control ginseng of the dma controller automatically
Number.
6. the SDIO interface data transmission device based on linux system, which is characterized in that including dma controller (1) and interrupt mould
Block (2), the dma controller (1) and the interrupt module (2) communicate to connect, and the dma controller (1) includes that DMA control is posted
Storage chained list module (11) and DMA data transfer module (12), in which: the DMA control register chained list module (11) and institute
It states DMA data transfer module (12) to communicate to connect, the DMA control register chained list module (11) and the interrupt module (2)
Communication connection, the interrupt module (2) connect with interrupt control unit.
7. SDIO interface data transmission device according to claim 6, which is characterized in that the DMA control register chain
Table module (11) includes multiple DMA control registers, and a DMA control register includes the address and one of one group of sg linked list data
The control parameter of group DMA control register.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910066723.4A CN109800194A (en) | 2019-01-24 | 2019-01-24 | SDIO interface data transmission method and device based on linux system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910066723.4A CN109800194A (en) | 2019-01-24 | 2019-01-24 | SDIO interface data transmission method and device based on linux system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109800194A true CN109800194A (en) | 2019-05-24 |
Family
ID=66560187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910066723.4A Pending CN109800194A (en) | 2019-01-24 | 2019-01-24 | SDIO interface data transmission method and device based on linux system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109800194A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110457744A (en) * | 2019-06-27 | 2019-11-15 | 山东方寸微电子科技有限公司 | A kind of SD/SDIO device emulation model framework and its design method |
| CN114338567A (en) * | 2021-12-27 | 2022-04-12 | 锐迪科创微电子（北京）有限公司 | SDIO interface data transmission method and device and SDIO interface equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101059785A (en) * | 2006-04-17 | 2007-10-24 | 中兴通讯股份有限公司 | Method for implementing two-dimensional data delivery using DMA controller |
| CN101340574A (en) * | 2008-08-04 | 2009-01-07 | 中兴通讯股份有限公司 | Method and system realizing zero-copy transmission of stream media data |
| CN102880573A (en) * | 2012-09-04 | 2013-01-16 | 武汉邮电科学研究院 | Linux system-based serial RapidIo data transmission method |
| US20140201498A1 (en) * | 2011-09-26 | 2014-07-17 | Intel Corporation | Instruction and logic to provide vector scatter-op and gather-op functionality |
| CN108932207A (en) * | 2017-05-23 | 2018-12-04 | 珠海全志科技股份有限公司 | SDIO-WIFI data transmission method and system with buffer area |
| CN109189702A (en) * | 2018-08-22 | 2019-01-11 | 山东超越数控电子股份有限公司 | A kind of transmission data buffer design method of Scatter-Gather DMA |
-
2019
- 2019-01-24 CN CN201910066723.4A patent/CN109800194A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101059785A (en) * | 2006-04-17 | 2007-10-24 | 中兴通讯股份有限公司 | Method for implementing two-dimensional data delivery using DMA controller |
| CN101340574A (en) * | 2008-08-04 | 2009-01-07 | 中兴通讯股份有限公司 | Method and system realizing zero-copy transmission of stream media data |
| US20140201498A1 (en) * | 2011-09-26 | 2014-07-17 | Intel Corporation | Instruction and logic to provide vector scatter-op and gather-op functionality |
| CN102880573A (en) * | 2012-09-04 | 2013-01-16 | 武汉邮电科学研究院 | Linux system-based serial RapidIo data transmission method |
| CN108932207A (en) * | 2017-05-23 | 2018-12-04 | 珠海全志科技股份有限公司 | SDIO-WIFI data transmission method and system with buffer area |
| CN109189702A (en) * | 2018-08-22 | 2019-01-11 | 山东超越数控电子股份有限公司 | A kind of transmission data buffer design method of Scatter-Gather DMA |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110457744A (en) * | 2019-06-27 | 2019-11-15 | 山东方寸微电子科技有限公司 | A kind of SD/SDIO device emulation model framework and its design method |
| CN110457744B (en) * | 2019-06-27 | 2023-01-20 | 山东方寸微电子科技有限公司 | SD/SDIO equipment simulation model framework and design method thereof |
| CN114338567A (en) * | 2021-12-27 | 2022-04-12 | 锐迪科创微电子（北京）有限公司 | SDIO interface data transmission method and device and SDIO interface equipment |
| CN114338567B (en) * | 2021-12-27 | 2023-09-05 | 锐迪科创微电子（北京）有限公司 | SDIO interface data transmission method and device and SDIO interface equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114138702B (en) | Computing system, PCI device manager and initialization method thereof | |
| CN106951388A (en) | A kind of DMA data transfer method and system based on PCIe | |
| CN103003808B (en) | System and method for accessing resources of a PCI Express compliant device | |
| CN106155960A (en) | Shake hands and the UART serial port communication method of EDMA based on GPIO | |
| CN116886751B (en) | High-speed communication method and device of heterogeneous equipment and heterogeneous communication system | |
| CN102654858A (en) | Dual-processor system and communication method thereof | |
| CN101452430B (en) | Communication method between multi-processors and communication device comprising multi-processors | |
| CN107967225A (en) | Data transmission method, device, computer-readable recording medium and terminal device | |
| CN111490946B (en) | FPGA connection realization method and device based on OpenCL framework | |
| CN108141471A (en) | The method, apparatus and equipment of compressed data | |
| CN109800194A (en) | SDIO interface data transmission method and device based on linux system | |
| CN111756858B (en) | Remote development processing system, method and device for embedded equipment | |
| CN108920193A (en) | SDIO communication interface realization method and device between FPGA and CPU | |
| CN110659143B (en) | Communication method and device between containers and electronic equipment | |
| CN116594951B (en) | FPGA-based data transmission system and method | |
| CN107783927A (en) | For connecting the circuit conversion system and method for AXI interfaces and DMA interface | |
| US6647100B1 (en) | Universal Serial Bus datapump command interpreter | |
| CN108055186B (en) | Master-slave processor communication method and device | |
| CN111427806A (en) | Method for sharing serial port by dual-core AMP system, storage medium and intelligent terminal | |
| CN114338567B (en) | SDIO interface data transmission method and device and SDIO interface equipment | |
| CN115168276A (en) | Control method, device and system for master-slave switching communication | |
| CN115022424A (en) | Virtual control method, system, equipment and medium for network card of hydroelectric LCU controller | |
| CN111427813A (en) | Inter-core communication method based on serial port, terminal and storage medium | |
| EP3973637A1 (en) | Exchange of data between a nfc reader and a dual nfc interface transponder | |
| CN104850517A (en) | Method and apparatus for transmitting packet data using DMA |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190524 |
|
| RJ01 | Rejection of invention patent application after publication |