CN110993015A - Hard disk differential signal quality detection method, hard disk differential signal quality detection device, main control and medium - Google Patents
Hard disk differential signal quality detection method, hard disk differential signal quality detection device, main control and medium Download PDFInfo
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Abstract
The application discloses a method and a device for detecting the quality of differential signals of a hard disk, a hard disk master control and a computer readable storage medium, wherein the method comprises the following steps: generating test data; closing the difference function, and writing the test data into a target storage unit in a target FLASH of the hard disk; judging whether the first write-in data read from the target storage unit is consistent with the test data; if yes, starting a differential function, and writing test data into the target storage unit in a covering manner; judging whether the second write data read from the target storage unit is consistent with the test data; if the second written data is consistent with the test data, judging that the differential signal is normal; and if the second written data is not consistent with the test data, judging that the differential signal is abnormal. According to the method and the device, data writing verification is respectively carried out on the storage units in the hard disk under two states of closing and opening the differential function, so that fault troubleshooting and positioning are carried out on the communication link with the differential problem, and the production efficiency and the quality are effectively improved.
Description
Technical Field
The present disclosure relates to the field of electronic detection technologies, and in particular, to a method and an apparatus for detecting quality of a differential signal of a hard disk, a hard disk master control, and a computer-readable storage medium.
Background
Generally, after mass production and manufacturing of hard disks, all the disks are subjected to high-temperature RDT and BIT aging tests. In actual test and application, the quality of the differential signals can cause certain interference on the test results, and the test results are influenced. In the prior art, special detection on the quality of differential signals is not usually performed in hard disk tests, so that when relevant differential problems occur in the test processes of high-temperature RDT, BIT aging and the like, the fault problem is discovered, the fault is solved only through layer-by-layer detection and positioning which are time-consuming and labor-consuming, and the production efficiency is seriously influenced.
In view of the above, it is an important need for those skilled in the art to provide a solution to the above technical problems.
Disclosure of Invention
The application aims to provide a method and a device for detecting the quality of a differential signal of a hard disk, a hard disk master control and a computer readable storage medium, so that special detection can be effectively carried out on the quality of the differential signal, fault positioning is facilitated, and production efficiency and quality are improved.
In order to solve the above technical problem, in a first aspect, the present application discloses a method for detecting quality of a differential signal of a hard disk, which is applied to a hard disk main control, and includes:
generating test data;
closing the difference function, and writing the test data into a target storage unit in a target FLASH of the hard disk;
judging whether the first write data read from the target storage unit is consistent with the test data;
if yes, starting a differential function, and writing the test data into the target storage unit in a covering manner;
judging whether the second write data read from the target storage unit is consistent with the test data;
if the second written data is consistent with the test data, judging that the differential signal is normal; and if the second written data is inconsistent with the test data, judging that the differential signal is abnormal.
Optionally, after the determining whether the first write data read from the target storage unit is consistent with the test data, the method further includes:
if not, the communication link is judged to be abnormal.
Optionally, before the overwriting the test data in the target storage unit, the method further includes:
and erasing the target storage unit.
Optionally, after the overwriting the test data in the target storage unit, the method further includes:
judging whether the overwriting succeeds or not;
if the overwriting is successful, continuing to execute the step of judging whether the second written data read from the target storage unit is consistent with the test data;
and if the overwriting is failed, executing the step of overwriting the test data into the target storage unit again.
Optionally, after the turning off the difference function, the method further includes:
acquiring a difference function state;
judging whether the differential function is successfully closed;
if yes, continuing to execute the step of writing the test data into a target storage unit in a target FLASH of the hard disk;
if not, error reporting information of the configuration failure of the difference function is generated.
Optionally, after the turning on the differential function, the method further includes:
acquiring a difference function state;
judging whether the difference function is started successfully or not;
if yes, continuing to execute the step of overwriting the test data into the target storage unit;
if not, error reporting information of the configuration failure of the difference function is generated.
In a second aspect, the present application further discloses a device for detecting quality of differential signals of a hard disk, which is applied to a hard disk master control, and includes:
a data generation unit for generating test data;
the first writing unit is used for closing the differential function and writing the test data into a target storage unit in a target FLASH of the hard disk;
a first judging unit configured to judge whether first write data read from the target storage unit is consistent with the test data;
the second writing unit is used for starting a differential function and writing the test data into the target storage unit in a covering manner after the first judging unit judges that the first written data is consistent with the test data;
a second judging unit configured to judge whether second write data read from the target storage unit is consistent with the test data; if the second written data is consistent with the test data, judging that the differential signal is normal; and if the second written data is inconsistent with the test data, judging that the differential signal is abnormal.
Optionally, the first judging unit is further configured to: and after the first write data read from the target storage unit is judged to be inconsistent with the test data, judging that the communication link of the hard disk is abnormal.
In a third aspect, the present application further discloses a hard disk master controller, including:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of the differential signal quality detection method of any hard disk as described above.
In a fourth aspect, the present application further discloses a computer-readable storage medium, in which a computer program is stored, and the computer program is used to implement the steps of the differential signal quality detection method for a hard disk as described above when being executed by a processor.
The method for detecting the quality of the differential signal of the hard disk is applied to hard disk main control and comprises the following steps: generating test data; closing the difference function, and writing the test data into a target storage unit in a target FLASH of the hard disk; judging whether the first write data read from the target storage unit is consistent with the test data; if yes, starting a differential function, and writing the test data into the target storage unit in a covering manner; judging whether the second write data read from the target storage unit is consistent with the test data; if the second written data is consistent with the test data, judging that the differential signal is normal; and if the second written data is inconsistent with the test data, judging that the differential signal is abnormal.
Therefore, the method and the device have the advantages that the differential signal is specially detected, data writing and verification are respectively carried out on the same storage unit in the hard disk under two states of closing the differential function and opening the differential function, the quality of the differential signal of the hard disk can be effectively judged based on the two verification results, fault troubleshooting and detection maintenance can be carried out on a communication link with the differential signal problem, fault location is rapidly facilitated, and production efficiency and quality are effectively improved. The differential signal quality detection device for the hard disk, the hard disk main control and the computer readable storage medium have the advantages.
Drawings
In order to more clearly illustrate the technical solutions in the prior art and the embodiments of the present application, the drawings that are needed to be used in the description of the prior art and the embodiments of the present application will be briefly described below. Of course, the following description of the drawings related to the embodiments of the present application is only a part of the embodiments of the present application, and it will be obvious to those skilled in the art that other drawings can be obtained from the provided drawings without any creative effort, and the obtained other drawings also belong to the protection scope of the present application.
Fig. 1 is an application scenario diagram of a method for detecting quality of differential signals of a hard disk according to an embodiment of the present application;
fig. 2 is a flowchart of a method for detecting quality of differential signals of a hard disk according to an embodiment of the present application;
fig. 3 is a block diagram of a structure of a differential signal quality detection apparatus for a hard disk according to an embodiment of the present disclosure;
fig. 4 is a block diagram of a hard disk master control according to an embodiment of the present application.
Detailed Description
The core of the application is to provide a method and a device for detecting the quality of differential signals of a hard disk, a hard disk master control and a computer readable storage medium, so that special detection can be effectively carried out on the quality of the differential signals, fault location is facilitated, and production efficiency and quality are improved.
In order to more clearly and completely describe the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Differential signal transmission is a signal technique for transmitting a pair of signals having the same amplitude and opposite phases to reduce interference and improve signal quality, and is widely used in the field of power electronics. Generally, after mass production and fabrication of hard disks, all disks are tested for high temperature RDT, BIT burn-in, etc. In actual test and application, the quality of the differential signals can cause certain interference on the test results, and the test results are influenced. In the prior art, special detection on the quality of differential signals is not usually performed in hard disk tests, so that when relevant differential problems occur in the test processes of high-temperature RDT, BIT aging and the like, the fault problem is discovered, and the fault is solved only through layer-by-layer detection and positioning which consumes time and labor, thereby seriously affecting the production efficiency: if the differential signal of the hard disk is abnormal, the disk may not be scanned with the disk information after being powered on, or the disk is kicked or the user data is abnormal in use, and the like, so that a technician needs to perform fault location by combining disk log analysis, troubleshoot hardware interference, and finally determine the influence of the differential signal. In view of this, the present application provides a technical solution for detecting the quality of a differential signal of a hard disk, which can effectively solve the above problems.
Referring to fig. 1, fig. 1 is a view of an application scenario of a method for detecting quality of differential signals of a hard disk according to an embodiment of the present application.
As shown in fig. 1, HOST is a hard disk master, and is a management module in a hard disk, on one hand, it provides an input/output interface for data to an external HOST, and on the other hand, it uses an interface with NAND FLASH to write NAND FLASH data or read data from NANDFLASH. In addition, HOST is also used to manage the turning on and off of the differential signaling function.
The OCM (on Chip memory) is a section of buffer in HOST, and is used for temporarily storing read-write data. When a data write operation is performed, HOST will construct specific data in OCM according to the configuration parameters, and then write the data to NAND FLASH; when a data read operation is performed, HOST reads the data from NAND FLASH and selects another area in OCM to store the read data.
NAND FLASH is a flash medium used to store data in a hard disk.
Flash array is NAND FLASH an effective unit for storing data inside, such as a field effect transistor.
Referring to fig. 2, fig. 2 is a flowchart of a method for detecting quality of differential signals of a hard disk, which is disclosed in the embodiment of the present application, and is applied to a hard disk main control, and mainly includes:
s101: test data is generated.
Specifically, the hard disk master controller may construct test data in the OCM so as to be used as a basis for detecting the quality of the differential signal.
S102: and closing the difference function, and writing the test data into a target storage unit in a target FLASH of the hard disk.
It should be noted that, in the hard disk read/write application, there are two important control signals, dqs (data strobe) signal and re (read enable) signal, and in order to improve the signal accuracy, they can specifically use the differential signal transmission mode. Wherein the rising or falling edge of the DQS signal is used to mark the transfer of data; the RE signal is an enable signal that when active allows data to be read from NAND FLASH to HOST. Therefore, after the hard disk is manufactured, the differential signal quality detection can be specially performed on the DQS signal and the RE signal.
HOST can shut down the differential signal function of DQS signal and RE signal of the hard disk, and then write the test data into the target storage unit, so as to verify the normality of the basic functions of the hard disk communication link and the hardware equipment through checking the data consistency. It should be noted that different numbers NAND FLASH are provided in different hard disks, wherein each NAND FLASH is provided with a certain number of Flash arrays, i.e., storage units. When data is written into a certain memory cell, the memory cell is a target memory cell.
It is easily understood that, on the basis of the above, as a specific embodiment, in step S102, after the differential function is turned off, the differential function status may be further obtained; judging whether the differential function is successfully closed; if yes, continuing to write the test data into a target storage unit in a target FLASH of the hard disk; if not, error reporting information of the configuration failure of the difference function is generated. If the differential function configuration is found to be failed, whether welding is normal or not and whether the NANDFLASH in the hard disk supports the differential function or not can be further detected, so that the troubleshooting efficiency is improved.
S103: judging whether the first write-in data read from the target storage unit is consistent with the test data; if yes, the process proceeds to S104.
Specifically, after the data writing operation is performed on the target memory cell through step S102, the data written in the target memory cell can be read and compared with the test data. If the communication link of the hard disk and the basic function of the hardware device are normal, the first write data read from the target storage unit should be consistent with the test data.
Further, after determining whether the first write data read from the target memory cell matches the test data in step S103, if the first write data does not match the test data, it may be determined that the communication link is abnormal.
S104: and starting a differential function, and writing the test data into the target storage unit in a covering manner.
Specifically, after determining that the basic function of the hard disk is normal, the differential function of the DQS signal and the RE signal may be turned on, and the test data may be written again at the same location in the hard disk, i.e., the target memory cell. Therefore, the data in the target memory cell, that is, the second write data, is read again and compared with the test data, so that the data write verification result in the differential function on state can be obtained. And combining the data write-in verification result in the differential function closing state, namely the verification result of the first write-in data, so as to obtain a differential signal quality result.
It is to be understood that the target memory cell may be erased before the test data is overwritten into the target memory cell.
Further, on the basis of the above, as a specific embodiment, in step S104, after the differential function is turned on, the differential function state may be further obtained; judging whether the difference function is started successfully or not; if yes, continuously overwriting the test data into the target storage unit; if not, error reporting information of the configuration failure of the differential function can be generated. If the differential function configuration is found to fail, it can be further detected whether the welding is normal and NAND FLASH in the hard disk supports the differential function, so as to improve the troubleshooting efficiency.
S105: judging whether the second write data read from the target storage unit is consistent with the test data; if yes, entering S106; if not, the process proceeds to S107.
S106: and judging that the differential signal is normal.
S107: and judging that the differential signal is abnormal.
Specifically, since it has been determined in S105 that the first write data for turning off the differential function is consistent with the test data, it is indicated that the communication link and the related hardware device are normal. If the second written data with the differential function started is inconsistent with the test data, the differential signal is abnormal; on the contrary, if the second write data with the differential function enabled is identical to the test data, it can be said that the differential signal is normal.
It should be noted that the differential signal quality detection method provided herein may be repeated to detect each memory cell in each NAND FLASH of the hard disk. If the differential signals of the whole disk are found to be abnormal, the possibility of the hard disk master control failing is high, and the hard disk master control, the disk hardware and the like can be preferentially checked; if the differential signal of only portion NAND FLASH is found to be abnormal, these troubled NAND FLASH and associated communication links may be prioritized.
The method for detecting the quality of the differential signal of the hard disk, provided by the embodiment of the application, is applied to hard disk main control and comprises the following steps: generating test data; closing the difference function, and writing the test data into a target storage unit in a target FLASH of the hard disk; judging whether the first write-in data read from the target storage unit is consistent with the test data; if yes, starting a differential function, and writing test data into the target storage unit in a covering manner; judging whether the second write data read from the target storage unit is consistent with the test data; if the second written data is consistent with the test data, judging that the differential signal is normal; and if the second written data is not consistent with the test data, judging that the differential signal is abnormal. Therefore, the method and the device have the advantages that the differential signal is specially detected, data writing and verification are respectively carried out on the same storage unit in the hard disk under two states of closing the differential function and opening the differential function, the quality of the differential signal of the hard disk can be effectively judged based on the two verification results, fault troubleshooting and detection maintenance can be carried out on a communication link with the differential signal problem, fault location is rapidly facilitated, and production efficiency and quality are effectively improved.
On the basis of the above, as a specific embodiment, in the method for detecting the quality of the differential signal of the hard disk provided in the embodiment of the present application, after overwriting the test data in the target memory cell in step S104, the method further includes:
judging whether the overwriting succeeds or not;
if the overwriting is successful, continuing to execute step S105 to determine whether the second write data read from the target storage unit is consistent with the test data;
if the overwriting fails, step S104 is executed again to overwrite the test data into the target memory cell.
It is easy to understand that, when multiple overwriting fails, error information can be generated, and the target storage unit is replaced to perform the test verification again.
Referring to fig. 3, an embodiment of the present application discloses a differential signal quality detection apparatus for a hard disk, which mainly includes:
a data generation unit 201 for generating test data;
the first writing unit 202 is configured to close the differential function, and write the test data into a target storage unit in a target FLASH of the hard disk;
a first judgment unit 203 for judging whether the first write data read from the target storage unit is consistent with the test data;
a second writing unit 204, configured to start the differential function and write the test data into the target storage unit in a covering manner after the first determining unit 203 determines that the first written data is consistent with the test data;
a second judging unit 205 for judging whether the second write data read from the target memory cell is consistent with the test data; if the second written data is consistent with the test data, judging that the differential signal is normal; and if the second written data is not consistent with the test data, judging that the differential signal is abnormal.
Therefore, the differential signal quality detection device for the hard disk disclosed by the embodiment of the application performs special detection on differential signals, performs data writing and verification on the same storage unit in the hard disk respectively under two states of closing the differential function and opening the differential function, and can effectively judge the quality of the differential signals of the hard disk based on two verification results, so that troubleshooting and detection maintenance can be performed on a communication link with a differential signal problem, fault positioning can be rapidly performed, and the production efficiency and quality can be effectively improved.
For the specific content of the above-mentioned differential signal quality detection apparatus for hard disk, reference may be made to the above-mentioned detailed description of the differential signal quality detection method for hard disk, and details thereof are not repeated here.
Further, on the basis of the above content, in an embodiment of the differential signal quality detection apparatus for a hard disk disclosed in this application, the first determining unit 203 is further configured to: after determining that the first write data read from the target storage unit is inconsistent with the test data, determining that the communication link of the hard disk is abnormal.
Further, on the basis of the above, in an embodiment of the differential signal quality detection apparatus for a hard disk disclosed in the present application, the second writing unit 204 is further configured to: the target memory cell is erased before the test data is overwritten into the target memory cell.
Further, on the basis of the above content, in an embodiment of the differential signal quality detection apparatus for a hard disk disclosed in this application, the second determining unit 205 is further configured to: after the test data is written into the target storage unit in an overlaying mode, judging whether the overlaying writing is successful; if the overwriting is successful, judging whether the second written data read from the target storage unit is consistent with the test data; if the overwrite writing fails, the second write unit 204 overwrites the test data in the target memory cell again.
Further, on the basis of the above, in an embodiment of the differential signal quality detection apparatus for a hard disk disclosed in the present application, the first writing unit 202 is further configured to: after the differential function is closed, acquiring the state of the differential function; judging whether the differential function is successfully closed; if yes, continuing to execute the step of writing the test data into a target storage unit in a target FLASH of the hard disk; if not, error reporting information of the configuration failure of the difference function is generated.
Further, on the basis of the above, in an embodiment of the differential signal quality detection apparatus for a hard disk disclosed in the present application, the second writing unit 204 is further configured to: after the differential function is started, acquiring the state of the differential function; judging whether the difference function is started successfully or not; if yes, continuing to execute the step of writing the test data into the target storage unit in a covering manner; if not, error reporting information of the configuration failure of the difference function is generated.
Referring to fig. 4, an embodiment of the present application discloses a hard disk master controller, including:
a memory 301 for storing a computer program;
a processor 302 for executing the computer program to implement the steps of the differential signal quality detection method of any hard disk as described above.
Further, the embodiment of the present application also discloses a computer-readable storage medium, in which a computer program is stored, and the computer program is used for implementing the steps of any one of the methods for detecting differential signal quality of a hard disk as described above when being executed by a processor.
For the specific content of the hard disk master control and the computer readable storage medium, reference may be made to the foregoing detailed description of the method for detecting the quality of the differential signal of the hard disk, and details thereof are not repeated here.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the equipment disclosed by the embodiment, the description is relatively simple because the equipment corresponds to the method disclosed by the embodiment, and the relevant parts can be referred to the method part for description.
It is further noted that, throughout this document, relational terms such as "first" and "second" are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The technical solutions provided by the present application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall into the protection scope of the present application.
Claims (10)
1. A method for detecting the quality of a differential signal of a hard disk is characterized by being applied to hard disk main control and comprising the following steps:
generating test data;
closing the difference function, and writing the test data into a target storage unit in a target FLASH of the hard disk;
judging whether the first write data read from the target storage unit is consistent with the test data;
if yes, starting a differential function, and writing the test data into the target storage unit in a covering manner;
judging whether the second write data read from the target storage unit is consistent with the test data;
if the second written data is consistent with the test data, judging that the differential signal is normal; and if the second written data is inconsistent with the test data, judging that the differential signal is abnormal.
2. The differential signal quality detection method according to claim 1, further comprising, after said determining whether the first write data read from the target memory cell matches the test data:
if not, the communication link is judged to be abnormal.
3. The differential signal quality detection method of claim 1, further comprising, prior to said overwriting the test data into the target memory cell:
and erasing the target storage unit.
4. The differential signal quality detection method of claim 1, further comprising, after said overwriting the test data into the target memory cell:
judging whether the overwriting succeeds or not;
if the overwriting is successful, continuing to execute the step of judging whether the second written data read from the target storage unit is consistent with the test data;
and if the overwriting is failed, executing the step of overwriting the test data into the target storage unit again.
5. The differential signal quality detection method according to any one of claims 1 to 4, further comprising, after said turning off the differential function:
acquiring a difference function state;
judging whether the differential function is successfully closed;
if yes, continuing to execute the step of writing the test data into a target storage unit in a target FLASH of the hard disk;
if not, error reporting information of the configuration failure of the difference function is generated.
6. The differential signal quality detection method of claim 5, further comprising, after said turning on the differential function:
acquiring a difference function state;
judging whether the difference function is started successfully or not;
if yes, continuing to execute the step of overwriting the test data into the target storage unit;
if not, error reporting information of the configuration failure of the difference function is generated.
7. The utility model provides a difference signal quality detection device of hard disk which characterized in that, is applied to the hard disk master control, includes:
a data generation unit for generating test data;
the first writing unit is used for closing the differential function and writing the test data into a target storage unit in a target FLASH of the hard disk;
a first judging unit configured to judge whether first write data read from the target storage unit is consistent with the test data;
the second writing unit is used for starting a differential function and writing the test data into the target storage unit in a covering manner after the first judging unit judges that the first written data is consistent with the test data;
a second judging unit configured to judge whether second write data read from the target storage unit is consistent with the test data; if the second written data is consistent with the test data, judging that the differential signal is normal; and if the second written data is inconsistent with the test data, judging that the differential signal is abnormal.
8. The differential signal quality detection device according to claim 7, wherein the first determination unit is further configured to: and after the first write data read from the target storage unit is judged to be inconsistent with the test data, judging that the communication link of the hard disk is abnormal.
9. A hard disk master control, comprising:
a memory for storing a computer program;
processor for executing said computer program for implementing the steps of the differential signal quality detection method of a hard disk according to any of claims 1 to 6.
10. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, is configured to carry out the steps of the differential signal quality detection method for a hard disk according to any one of claims 1 to 6.
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| CN107818058A (en) * | 2016-09-13 | 2018-03-20 | 三星电子株式会社 | Receive the semiconductor device and Memory Controller of differential signal |
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| US20190267054A1 (en) * | 2018-02-28 | 2019-08-29 | Sandisk Technologies Llc | Throughput performance for cross temperature handling scenarios |
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| CN107818058A (en) * | 2016-09-13 | 2018-03-20 | 三星电子株式会社 | Receive the semiconductor device and Memory Controller of differential signal |
| US20190267054A1 (en) * | 2018-02-28 | 2019-08-29 | Sandisk Technologies Llc | Throughput performance for cross temperature handling scenarios |
| CN109446011A (en) * | 2018-11-01 | 2019-03-08 | 郑州云海信息技术有限公司 | A kind of firmware safety detecting method, device and the storage medium of hard disk |
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