CN105183397A - EMMC read-write control method and system - Google Patents
EMMC read-write control method and system Download PDFInfo
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Abstract
The invention discloses an EMMC read-write control method and system. The method comprises the steps that a buffer region is set in a memory in advance; when an EMMC read-write operation is detected, the read-write operation is controlled to be used for the buffer region; when it is detected that the data size in the buffer region exceeds the storage range or it is detected that a mobile terminal is shut down, data in the buffer region are written into corresponding addresses in an EMMC, and all buffer units in the buffer region are deleted. According to the EMMC read-write control method and system, the buffer region is set in the memory, the EMMC read-write operation is detected, and the read-write operation is used for acting on the buffer region; when the buffer region is full or it is detected that the mobile terminal is shut down, the data in the buffer region are written in the corresponding addresses of the EMMC, and buffers are emptied, so that the EMMC write operation is optimized, the frequency of actually writing data in the EMMC is greatly decreased, and the service life of the EMMC is prolonged.
Description
Technical field
The present invention relates to technical field of mobile terminals, particularly relate to a kind of EMMC read/writing control method and control system.
Background technology
Current mobile terminal generally adopts embedded memory body (EmbeddedMultiMediaCard is called for short EMMC) as storage chip, but EMMC has the restriction of write number of times, when writing number of times and exceeding restriction, there is EMMC chip and there is the possibility damaged; When EMMC wafer damage, the file corruption that user can be caused to preserve, system cloud gray model exception, even mobile terminal cannot use.
In the prior art, any operation of the reading and writing for EMMC is directly towards EMMC chip, in addition user uses mobile terminal frequency higher, cause the number of times writing EMMC can arrive limited number of times after by 2 years, EMMC wafer damage, substantially reduce the serviceable life of EMMC chip, thus cause the defects such as the file corruption of user, mobile terminal cannot use.
Therefore, prior art haves much room for improvement and improves.
Summary of the invention
In view of the deficiencies in the prior art, the object of the invention is to provide a kind of EMMC read/writing control method and control system, in order to the read-write number of times solving the EMMC of mobile terminal in prior art is more, EMMC chip brain truster in serviceable life, causes the defect that the file corruption of user, mobile terminal cannot use.Can be optimized EMMC write operation by technical scheme provided by the invention, greatly reduce the number of times of actual write EMMC chip, make the life of EMMC.
Technical scheme of the present invention is as follows:
A kind of EMMC read/writing control method, wherein, method comprises:
A, a block cache region is set in internal memory in advance;
B, when EMMC read-write operation being detected, control read-write operation to act on described buffer zone;
C, when detecting the size of data in buffer zone and exceeding memory range or detect that mobile terminal shut down, the data in buffer zone are write in EMMC in appropriate address, and deletes all buffer units in buffer zone.
Described EMMC read/writing control method, wherein, described buffer unit comprises temporary address and ephemeral data.
Described EMMC read/writing control method, wherein, described step B specifically comprises:
B1, detection EMMC read-write operation, judge that current operation is read operation or write operation;
If B2 is read operation when operating, obtain read operation address, corresponding read operation address is searched in buffer zone, return the ephemeral data that described read operation address is corresponding, if search the read operation address less than correspondence in buffer zone, return the data that the address of read operation described in EMMC is corresponding;
If B3 current operation is write operation, obtain address and the data of write operation, by the ephemeral data of write operation address corresponding in data corresponding for the address of described write operation write buffer zone.
Described EMMC read/writing control method, wherein, described step B3 specifically comprises:
If B31 current operation is write operation, obtain address and the data of write operation;
B32, in buffer zone, search whether there is buffer unit and the temporary address of this buffer unit is identical with described write operation address;
If B33 exists, then data assignment is given the ephemeral data of this buffer unit;
If B34 does not exist, then in buffer zone, create a buffer unit, the temporary address of buffer unit is set to described write operation address, by data assignment to the ephemeral data of temporary address.
Described EMMC read/writing control method, wherein, described step C specifically comprises:
C1, when detecting that buffer area size of data exceeds memory range or detects that mobile terminal shuts down, by EMMC address corresponding to ephemeral data write temporary address that store in temporary address;
C2, all buffer units deleted in buffer zone.
A kind of EMMC read-write control system, wherein, system comprises:
Pre-set module, for arranging a block cache region in advance in internal memory;
First Detection & Controling module, for when EMMC read-write operation being detected, controls read-write operation to act on described buffer zone;
Second Detection & Controling module, for when detecting the size of data in buffer zone and exceeding memory range or detect that mobile terminal shuts down, by appropriate address in the data write EMMC in buffer zone, and deletes all buffer units in buffer zone.
Described EMMC read-write control system, wherein, described system also comprises: described buffer unit comprises temporary address and ephemeral data.
Described EMMC read-write control system, wherein, described first Detection & Controling module specifically comprises:
Detecting and judging unit, for detecting EMMC read-write operation, judging that current operation is read operation or write operation;
Search and reading unit, if be read operation for operating, obtain read operation address, corresponding read operation address is searched in buffer zone, return the ephemeral data that described read operation address is corresponding, if search the read operation address less than correspondence in buffer zone, return the data that the address of read operation described in EMMC is corresponding;
Data write unit, if be write operation for current operation, obtains address and the data of write operation, by the ephemeral data of write operation address corresponding in data corresponding for the address of described write operation write buffer zone.
Described EMMC read-write control system, wherein, described data write unit specifically comprises:
Address and data capture unit, if be write operation for current operation, obtain address and the data of write operation;
Searching unit, whether there is buffer unit and the temporary address of this buffer unit is identical with described write operation address for searching in buffer zone;
First data write unit, for giving the ephemeral data of this buffer unit by data assignment;
Second data write unit, for creating a buffer unit in buffer zone, the temporary address of buffer unit is set to described write operation address, by data assignment to the ephemeral data of temporary address.
Described EMMC read-write control system, wherein, described second Detection & Controling module specifically comprises:
Detection & Controling unit has, and for when detecting that buffer area size of data exceeds memory range or detects that mobile terminal shuts down, is write by the ephemeral data stored in EMMC address corresponding to temporary address in temporary address;
Delete cells, for deleting all buffer units in buffer zone.
The invention provides a kind of EMMC read/writing control method and control system, described method comprises: in internal memory, arrange a block cache region in advance; When EMMC read-write operation being detected, control read-write operation to act on described buffer zone; When detecting the size of data in buffer zone and exceeding memory range or detect that mobile terminal shuts down, by appropriate address in the data write EMMC in buffer zone, and delete all buffer units in buffer zone.The present invention, by arranging a block cache region in internal memory, detects EMMC read-write operation, and read-write operation is acted on described buffer zone; When buffer zone is full or when detecting that mobile terminal shuts down, by the data write EMMC appropriate address in buffer zone, and empty buffer memory; Thus realize being optimized EMMC write operation, greatly reduce the number of times of actual write EMMC chip, extend the life-span of EMMC.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the preferred embodiment of a kind of EMMC read/writing control method of the present invention.
Fig. 2 is the buffer area schematic diagram of the embody rule embodiment of a kind of EMMC read/writing control method of the present invention.
Fig. 3 is the refinement step process flow diagram of the read-write operation of the embody rule embodiment of a kind of EMMC read/writing control method of the present invention.
Fig. 4 be the embody rule embodiment of a kind of EMMC read/writing control method of the present invention when buffer area data ultra-range or the postboost refinement step process flow diagram of mobile terminal.
Fig. 5 is the functional schematic block diagram of the preferred embodiment of a kind of EMMC read-write control system of the present invention.
Embodiment
For making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of preferred embodiment of EMMC read/writing control method, as shown in Figure 1, described method comprises:
Step S100, a block cache region is set in internal memory in advance.
During concrete enforcement, a block cache region being set in advance in internal memory, for the read-write operation for EMMC being converted into the operation to buffer memory, thus decreasing the read-write number of times to EMMC.Particularly, described buffer zone is one piece of internal memory; Buffer zone is for creating buffer unit, and each buffer unit comprises temporary address and ephemeral data; For example, refer to Fig. 2, Figure 2 shows that the schematic diagram of buffer zone, Figure 2 shows that buffer zone has created 2 buffer units, each buffer unit comprises again temporary address and ephemeral data; Wherein, the size of described buffer unit, ephemeral data, temporary address is fixing.Temporary address and ephemeral data are correspond to address corresponding to EMMC and data respectively.
Step S200, when EMMC read-write operation being detected, control read-write operation to act on described buffer zone.
During concrete enforcement, step S200 specifically comprises:
Step S21, detection EMMC read-write operation, judge that current operation is read operation or write operation;
If step S22 is read operation when operating, obtain read operation address, corresponding read operation address is searched in buffer zone, return the ephemeral data that described read operation address is corresponding, if search the read operation address less than correspondence in buffer zone, return the data that the address of read operation described in EMMC is corresponding;
If step S23 current operation is write operation, obtain address and the data of write operation, by the ephemeral data of write operation address corresponding in data corresponding for the address of described write operation write buffer zone.
During concrete enforcement, step S23 specifically comprises:.
If step S231 current operation is write operation, obtain address and the data of write operation;
Step S232, in buffer zone, search whether there is buffer unit and the temporary address of this buffer unit is identical with described write operation address;
If step S233 exists, then data assignment is given the ephemeral data of this buffer unit;
If step S234 does not exist, then in buffer zone, create a buffer unit, the temporary address of buffer unit is set to described write operation address, by data assignment to the ephemeral data of temporary address.
During concrete enforcement, being the data of 0x10000000 when needing to read address in EMMC, in buffer zone, first searching whether there is buffer unit and the temporary address of this buffer unit is 0x10000000, if exist, return the ephemeral data of this buffer unit; If do not exist, then return the data that in EMMC, address 0x10000000 is corresponding.
Be 0x10000000 when data 0x66 is written to address in EMMC by needs, in buffer zone, first search whether there is buffer unit and the temporary address of this buffer unit is 0x10000000, if exist, 0x66 assignment is given the ephemeral data of this buffer unit; If do not exist, then in buffer zone, create a buffer unit, the temporary address of this buffer unit is 0x10000000, and gives the ephemeral data of this buffer unit by 0x66 assignment.
Further, present invention also offers a kind of refinement step process flow diagram of read-write operation of embody rule embodiment of EMMC read/writing control method, as shown in Figure 3, described refinement step comprises:
Step S201, detection EMMC read-write operation, if read operation then enters step S202, if write operation then enters step S203;
Step S202, obtain read operation address, in buffer zone, search whether there is buffer unit and the temporary address of this buffer unit is identical with described read operation address, if existence, return the ephemeral data of this buffer unit; If do not exist, then return the data that the address of read operation described in EMMC is corresponding;
Step S203, obtain the address of write operation and data, in buffer zone, search whether there is buffer unit and the temporary address of this buffer unit is identical with described write operation address, if exist, by data assignment to the ephemeral data of this buffer unit; If do not deposit, then in buffer zone, create a buffer unit, the temporary address of this buffer unit is described write operation address, and by data assignment corresponding for the described write operation address in EMMC to ephemeral data.
Step S300, when detecting the size of data in buffer zone and exceeding memory range or detect that mobile terminal shut down, the data in buffer zone are write in EMMC in appropriate address, and deletes all buffer units in buffer zone.
During concrete enforcement, step S300 specifically comprises:.
Step S31, when detecting that buffer area size of data exceeds memory range or detects that mobile terminal shuts down, by EMMC address corresponding to ephemeral data write temporary address that store in temporary address;
Step S32, all buffer units deleted in buffer zone.
During concrete enforcement, when buffer zone is full maybe when detecting that mobile terminal shuts down, by the data write EMMC appropriate address in buffer zone, and delete all buffer units in buffer zone.
The embody rule embodiment of a kind of EMMC read/writing control method of the present invention when buffer area data ultra-range or the postboost refinement step process flow diagram of mobile terminal, as shown in Figure 4, refinement step comprises:
Step S301, when an EMMC read-write operation is finished, to detect in buffer zone buffer unit number whether for N described in N(is that buffer zone size is divided by a buffer unit size), then enter step S302 if yes; Maybe when detecting that mobile terminal shuts down, also step S302 will be entered;
Step S302, as follows to each buffer unit process in buffer zone: to be write ephemeral data in temporary address in EMMC address;
For example, have buffer unit in buffer zone, its temporary address is 0x10000000, and its ephemeral data is 0x66, then write by 0x66 in the address 0x10000000 of EMMC;
S203, all buffer units deleted in buffer zone.
From above embodiment of the method, the invention provides a kind of EMMC read/writing control method, by arranging a block cache region in internal memory, detecting EMMC read-write operation, and read-write operation is acted on described buffer zone; When buffer zone is full or when detecting that mobile terminal shuts down, by the data write EMMC appropriate address in buffer zone, and empty buffer memory; Thus realize being optimized EMMC write operation, greatly reduce the number of times of actual write EMMC chip, extend the life-span of EMMC.
On the basis of said method embodiment, present invention also offers a kind of functional schematic block diagram of preferred embodiment of EMMC read-write control system, as shown in Figure 5, described system comprises:
Pre-set module 100, for arranging a block cache region in advance in internal memory; As detailed above.
First Detection & Controling module 200, for when EMMC read-write operation being detected, controls read-write operation to act on described buffer zone; As detailed above.
Second Detection & Controling module 300, for when detecting the size of data in buffer zone and exceeding memory range or detect that mobile terminal shuts down, by appropriate address in the data write EMMC in buffer zone, and deletes all buffer units in buffer zone; As detailed above.
Described EMMC read-write control system, wherein, described system also comprises: described buffer unit comprises temporary address and ephemeral data; As detailed above.
Described EMMC read-write control system, wherein, described first Detection & Controling module specifically comprises:
Detecting and judging unit, for detecting EMMC read-write operation, judging that current operation is read operation or write operation; As detailed above.
Search and reading unit, if be read operation for operating, obtain read operation address, corresponding read operation address is searched in buffer zone, return the ephemeral data that described read operation address is corresponding, if search the read operation address less than correspondence in buffer zone, return the data that the address of read operation described in EMMC is corresponding; As detailed above.
Data write unit, if be write operation for current operation, obtains address and the data of write operation, by the ephemeral data of write operation address corresponding in data corresponding for the address of described write operation write buffer zone; As detailed above.
Described EMMC read-write control system, wherein, described data write unit specifically comprises:
Address and data capture unit, if be write operation for current operation, obtain address and the data of write operation; As detailed above.
Searching unit, whether there is buffer unit and the temporary address of this buffer unit is identical with described write operation address for searching in buffer zone; As detailed above.
First data write unit, for giving the ephemeral data of this buffer unit by data assignment; As detailed above.
Second data write unit, for creating a buffer unit in buffer zone, the temporary address of buffer unit is set to described write operation address, by data assignment to the ephemeral data of temporary address; As detailed above.
Described EMMC read-write control system, wherein, described second Detection & Controling module specifically comprises:
Detection & Controling unit has, and for when detecting that buffer area size of data exceeds memory range or detects that mobile terminal shuts down, is write by the ephemeral data stored in EMMC address corresponding to temporary address in temporary address; As detailed above.
Delete cells, for deleting all buffer units in buffer zone; As detailed above.
In sum, the invention provides a kind of EMMC read/writing control method and control system, described method comprises: in internal memory, arrange a block cache region in advance; When EMMC read-write operation being detected, control read-write operation to act on described buffer zone; When detecting the size of data in buffer zone and exceeding memory range or detect that mobile terminal shuts down, by appropriate address in the data write EMMC in buffer zone, and delete all buffer units in buffer zone.The present invention, by arranging a block cache region in internal memory, detects EMMC read-write operation, and read-write operation is acted on described buffer zone; When buffer zone is full or when detecting that mobile terminal shuts down, by the data write EMMC appropriate address in buffer zone, and empty buffer memory; Thus realize being optimized EMMC write operation, greatly reduce the number of times of actual write EMMC chip, extend the life-span of EMMC.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (10)
1. an EMMC read/writing control method, is characterized in that, method comprises:
A, a block cache region is set in internal memory in advance;
B, when EMMC read-write operation being detected, control read-write operation to act on described buffer zone;
C, when detecting the size of data in buffer zone and exceeding memory range or detect that mobile terminal shut down, the data in buffer zone are write in EMMC in appropriate address, and deletes all buffer units in buffer zone.
2. EMMC read/writing control method according to claim 1, it is characterized in that, described buffer unit comprises temporary address and ephemeral data.
3. EMMC read/writing control method according to claim 2, it is characterized in that, described step B specifically comprises:
B1, detection EMMC read-write operation, judge that current operation is read operation or write operation;
If B2 is read operation when operating, obtain read operation address, corresponding read operation address is searched in buffer zone, return the ephemeral data that described read operation address is corresponding, if search the read operation address less than correspondence in buffer zone, return the data that the address of read operation described in EMMC is corresponding;
If B3 current operation is write operation, obtain address and the data of write operation, by the ephemeral data of write operation address corresponding in data corresponding for the address of described write operation write buffer zone.
4. EMMC read/writing control method according to claim 3, it is characterized in that, described step B3 specifically comprises:
If B31 current operation is write operation, obtain address and the data of write operation;
B32, in buffer zone, search whether there is buffer unit and the temporary address of this buffer unit is identical with described write operation address;
If B33 exists, then data assignment is given the ephemeral data of this buffer unit;
If B34 does not exist, then in buffer zone, create a buffer unit, the temporary address of buffer unit is set to described write operation address, by data assignment to the ephemeral data of temporary address.
5. EMMC read/writing control method according to claim 4, it is characterized in that, described step C specifically comprises:
C1, when detecting that buffer area size of data exceeds memory range or detects that mobile terminal shuts down, by EMMC address corresponding to ephemeral data write temporary address that store in temporary address;
C2, all buffer units deleted in buffer zone.
6. an EMMC read-write control system, is characterized in that, system comprises:
Pre-set module, for arranging a block cache region in advance in internal memory;
First Detection & Controling module, for when EMMC read-write operation being detected, controls read-write operation to act on described buffer zone;
Second Detection & Controling module, for when detecting the size of data in buffer zone and exceeding memory range or detect that mobile terminal shuts down, by appropriate address in the data write EMMC in buffer zone, and deletes all buffer units in buffer zone.
7. EMMC read-write control system according to claim 6, it is characterized in that, described system also comprises: described buffer unit comprises temporary address and ephemeral data.
8. EMMC read-write control system according to claim 7, it is characterized in that, described first Detection & Controling module specifically comprises:
Detecting and judging unit, for detecting EMMC read-write operation, judging that current operation is read operation or write operation;
Search and reading unit, if be read operation for operating, obtain read operation address, corresponding read operation address is searched in buffer zone, return the ephemeral data that described read operation address is corresponding, if search the read operation address less than correspondence in buffer zone, return the data that the address of read operation described in EMMC is corresponding;
Data write unit, if be write operation for current operation, obtains address and the data of write operation, by the ephemeral data of write operation address corresponding in data corresponding for the address of described write operation write buffer zone.
9. EMMC read-write control system according to claim 8, it is characterized in that, described data write unit specifically comprises:
Address and data capture unit, if be write operation for current operation, obtain address and the data of write operation;
Searching unit, whether there is buffer unit and the temporary address of this buffer unit is identical with described write operation address for searching in buffer zone;
First data write unit, for giving the ephemeral data of this buffer unit by data assignment;
Second data write unit, for creating a buffer unit in buffer zone, the temporary address of buffer unit is set to described write operation address, by data assignment to the ephemeral data of temporary address.
10. EMMC read-write control system according to claim 9, it is characterized in that, described second Detection & Controling module specifically comprises:
Detection & Controling unit has, and for when detecting that buffer area size of data exceeds memory range or detects that mobile terminal shuts down, is write by the ephemeral data stored in EMMC address corresponding to temporary address in temporary address;
Delete cells, for deleting all buffer units in buffer zone.
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