CN109117347A - The method of BMC control hard disk indication lamp state - Google Patents
The method of BMC control hard disk indication lamp state Download PDFInfo
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- CN109117347A CN109117347A CN201810751751.5A CN201810751751A CN109117347A CN 109117347 A CN109117347 A CN 109117347A CN 201810751751 A CN201810751751 A CN 201810751751A CN 109117347 A CN109117347 A CN 109117347A
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- cpld
- hard disk
- bmc
- indication lamp
- lamp state
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/32—Monitoring with visual or acoustical indication of the functioning of the machine
- G06F11/324—Display of status information
- G06F11/325—Display of status information by lamps or LED's
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
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Abstract
The present invention relates to a kind of methods of BMC control hard disk indication lamp state, it the described method comprises the following steps: in system initialization, CPLD is configured to include several state machines to connect between the CPLD and BMC by I2C communication protocol based on I2C Slave equipment；When hard disk is in place, the BMC sends the I2C Data character of control hard disk indication lamp state by I2C communication protocol to the CPLD, controls the hard disk indication lamp state according to the I2C Data character by the CPLD.Compared with the existing technology, the present invention improves the reliability of BMC control hard disk indication lamp state, and positioning, the working efficiency for searching faulty hard disk.
Description
Technical field
The present invention relates to L-type controller storage server technical fields more particularly to a kind of BMC to control hard disk indication lamp shape
The method of state.
Background technique
Current server system testing gradually moves towards enlarged, and debugging optimization is concentrated in centralized management, in this regard, needs pair
Calculator room equipment is remotely controlled, and for the ease of simple attended operation, the remote operation based on BMC management is particularly important,
In particular for the controller system of mass data storage, the maintenance for treating hard disk is exactly very cumbersome step, if do not had
Positioning, the method for searching faulty hard disk well, also mean that workload is very big.
It is directed to massive store server at present, treats the maintenance of faulty hard disk, based on I2C in BMC remote control interface
It is communicated between PCA9555, is converted by backplane logic chip CPLD, read the information of related register position, from
And to realize that its related realization flow model of positioning failure hard disk is as shown in Figure 1.
Existing controller storage system, in the design process realize BMC control hard disk indication lamp, backboard I2C with
PCA9555 is communicated, while carrying out the extension of IO Port, is then attached to above CPLD, but a PCA9555 is at most propped up
16 IO Port are held, the quantity of these IO Port is limited, if to realize many IO Port it is necessary to increase
The number of chips of PCA9555, and each IO Port must increase to above CPLD, must also need the CPLD of multiple IO Pin
Chip, this can greatly increase cost, while increase the complexity of backboard placement-and-routing.
At the same time, existing controlling server backplane, on realization hard disk lighting function, with ALTERA CPLD
SGPIO is decoded, if using the logic chip more than ALTERA CPLD this IO Port, it is also necessary to using PCA9555 chip
Design then weakens ALTERA CPLD programmable logic device function significantly.If can be by the IO Port function of PCA9555, CPLD
Internal moduleization is realized, it then follows the I2C communication protocol of identical I2C communication mode and access instruction, such BMC does not do any repair
Change, it can be with reduced cost.But CPLD logic chip itself is not no I2C interface, it is therefore necessary to propose a kind of solution IO
Interface come realize BMC control hard disk indication lamp method.
Summary of the invention
It is a primary object of the present invention to propose a kind of method of BMC control hard disk indication lamp state, it is intended to promote BMC control
The reliability of hard disk indication lamp state processed, and positioning, the working efficiency for searching faulty hard disk.
To achieve the above object, the present invention provides a kind of method of BMC control hard disk indication lamp state, the method includes
Following steps:
In system initialization, CPLD is configured to include several state machines based on I2C Slave equipment, it is described
It is connected between CPLD and BMC by I2C communication protocol；
When hard disk is in place, the BMC sends control hard disk indication lamp state to the CPLD by I2C communication protocol
I2C Data character controls the hard disk indication lamp state according to the I2C Data character by the CPLD.
Further technical solution of the invention is that several state machines include eight kinds of states: IDLE, READ
ADDRESS、SEND ACK1、SEND ACK2、WRITE CMD、WRITE DATA、READ CMD、WAIT ACK。
Further technical solution of the invention is, described when hard disk is in place, the BMC by I2C communication protocol to
The CPLD sends the I2C Data character of control hard disk indication lamp state, by the CPLD according to the I2C Data character control
The step of making the hard disk indication lamp state include:
When hard disk is in place, the BMC sends the I2C of hard disk lighting in place by I2C communication protocol to the CPLD
Data character realizes that hard disk lighting in place controls according to the I2C Data character by the CPLD.
Further technical solution of the invention is, described when hard disk is in place, the BMC by I2C communication protocol to
The CPLD sends the I2C Data character for realizing hard disk lighting control in place, by the CPLD according to the I2C Data character
Realize that the step of hard disk lighting in place controls includes:
The BMC sends the address I2C of the CPLD to the CPLD, wherein read-write position is to write → R/W=' 0 '；
The BMC sends command byte to the CPLD, chooses the register for the CPLD to be write；
The BMC sends the data to be write to the CPLD.
Further technical solution of the invention is, described when hard disk is in place, the BMC by I2C communication protocol to
The CPLD sends the I2C Data character of control hard disk indication lamp state, by the CPLD according to the I2C Data character control
After the step of making the hard disk indication lamp state further include:
Recording disk lighting state in place.
The step of further technical solution of the invention is, recording disk lighting state in place include:
The BMC sends the address I2C of the CPLD to the CPLD, wherein read-write position is to write → R/W=' 0 '；
The BMC sends command byte to the CPLD, chooses the register for the CPLD to be write；
Again after restart, the address I2C of the CPLD is sent to the CPLD, wherein read-write position is reading → R/W=
‘1’。
Further technical solution of the invention is, described when hard disk is in place, the BMC by I2C communication protocol to
The CPLD sends the I2C Data character of control hard disk indication lamp state, by the CPLD according to the I2C Data character control
Include: before the step of making the hard disk indication lamp state
Recording disk information in place.
The step of further technical solution of the invention is, recording disk information in place include:
The BMC sends the address I2C of the CPLD to the CPLD, wherein read-write position is to write → R/W=' 0 '；
The BMC sends command byte to the CPLD, chooses the register for the CPLD to be write；
Again after restart, the BMC sends the address I2C of the CPLD to the CPLD, wherein read-write position be read →
R/W=' 1 '.
The beneficial effects of the present invention are: the method for BMC of the present invention control hard disk indication lamp state through the above technical solutions,
In system initialization, CPLD is configured to include several state machines based on I2C Slave equipment, the CPLD and BMC
Between connected by I2C communication protocol；When hard disk is in place, the BMC is sent to the CPLD by I2C communication protocol and is controlled
The I2C Data character of hard disk indication lamp state controls the hard disk indication lamp according to the I2C Data character by the CPLD
State improves the reliability of BMC control hard disk indication lamp state, and positioning, the working efficiency for searching faulty hard disk.
Detailed description of the invention
Fig. 1 is the implementation process mode figure for realizing positioning hard disk failure in the prior art；
Fig. 2 is the flow diagram of the method preferred embodiment of BMC control hard disk indication lamp state of the present invention；
Fig. 3 is the method totality implementation process block diagram of BMC control hard disk indication lamp state of the present invention；
Fig. 4 is I2C SDA data receiver and transmission flow signal in the method for BMC control hard disk indication lamp state of the present invention
Figure；
Fig. 5 is eight kinds of state machine diagrams in the method for BMC control hard disk indication lamp state of the present invention；
Fig. 6 is the rotation flow chart of eight state machines in the method for BMC control hard disk indication lamp state of the present invention；
Fig. 7 is eight state machine rotation flow simulation effects in the method for BMC control hard disk indication lamp state of the present invention
Figure；
Fig. 8 is that the method recording disk information in place of BMC control hard disk indication lamp state of the present invention reads CPLD register
Form schematic diagram；
Fig. 9 is that the method for BMC control hard disk indication lamp state of the present invention realizes that CPLD deposit is write in hard disk lighting control in place
The form schematic diagram of device；
Figure 10 is that the method recording disk lighting state in place of BMC control hard disk indication lamp state of the present invention reads CPLD deposit
The form schematic diagram of device.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Fig. 1 is please referred to, Fig. 1 is the process signal of the method preferred embodiment of BMC control hard disk indication lamp state of the present invention
Figure.
As shown in Figure 1, the method preferred embodiment of BMC of the present invention control hard disk indication lamp state the following steps are included:
CPLD is configured to include setting based on I2C Slave for several state machines by step S100 in system initialization
It is standby, it is connected between the CPLD and BMC by I2C communication protocol；
Step S200, when hard disk is in place, the BMC sends control hard disk to the CPLD by I2C communication protocol and refers to
The I2C Data character for showing lamp state controls the hard disk indication lamp state according to the I2C Data character by the CPLD.
Wherein, in the present embodiment, several state machines include eight kinds of states: IDLE, READ ADDRESS, SEND
ACK1、SEND ACK2、WRITE CMD、WRITE DATA、READ CMD、WAIT ACK。
Further, described when hard disk is in place, the BMC sends control firmly to the CPLD by I2C communication protocol
The I2C Data character of disk LED status controls the hard disk indication lamp shape according to the I2C Data character by the CPLD
The step of state includes:
When hard disk is in place, the BMC sends the I2C of hard disk lighting in place by I2C communication protocol to the CPLD
Data character realizes that hard disk lighting in place controls according to the I2C Data character by the CPLD.
Further, described when hard disk is in place, the BMC is sent to the CPLD by I2C communication protocol and is realized firmly
The I2C Data character of disk lighting control in place, realizes hard disk lighting control in place according to the I2C Data character by the CPLD
The step of processed includes:
The BMC sends the address I2C of the CPLD to the CPLD, wherein read-write position is to write → R/W=' 0 '；
The BMC sends command byte to the CPLD, chooses the register for the CPLD to be write；
The BMC sends the data to be write to the CPLD.
Further, described when hard disk is in place, the BMC sends control firmly to the CPLD by I2C communication protocol
The I2C Data character of disk LED status controls the hard disk indication lamp shape according to the I2C Data character by the CPLD
After the step of state further include:
Recording disk lighting state in place.
Further, the step of recording disk lighting state in place includes:
The BMC sends the address I2C of the CPLD to the CPLD, wherein read-write position is to write → R/W=' 0 '；
The BMC sends command byte to the CPLD, chooses the register for the CPLD to be write；
Again after restart, the address I2C of the CPLD is sent to the CPLD, wherein read-write position is reading → R/W=
‘1’。
Further, described when hard disk is in place, the BMC sends control firmly to the CPLD by I2C communication protocol
The I2C Data character of disk LED status controls the hard disk indication lamp shape according to the I2C Data character by the CPLD
Include: before the step of state
Recording disk information in place.
Further, the step of recording disk information in place includes:
The BMC sends the address I2C of the CPLD to the CPLD, wherein read-write position is to write → R/W=' 0 '；
The BMC sends command byte to the CPLD, chooses the register for the CPLD to be write；
Again after restart, the BMC sends the address I2C of the CPLD to the CPLD, wherein read-write position be read →
R/W=' 1 '.
It does below with reference to method of the Fig. 3 to Figure 10 to BMC of the present invention control hard disk indication lamp state and further explains in detail
It states.
Hard disk indication lamp state is controlled to solve BMC in the prior art, if the present invention considers energy
By the IO Port function of PCA9555, realized by CPLD internal moduleization, it then follows identical I2C communication mode and access refer to
It enables, it goes without doing any modification of the I2C communication protocol of such BMC, it can be with reduced cost, but since CPLD logic chip itself is
There is no I2C interface, therefore the present invention proposes to be based on the machine modularized design of I2C various states, to solve I/O interface to realize
The method of BMC control hard disk indication lamp.
Specifically, a kind of method that the present invention proposes BMC control hard disk indication lamp state, this method mainly includes two
Point: a part is that hard disk indication lamp control is realized by state machine；Another part is by state machine come recording disk instruction
The state of lamp.Wherein, it is mainly realized by various states machine modularization, overall implementation process block diagram is as shown in Figure 3.
The detailed techniqueflow of method and function introduction of BMC control hard disk indication lamp state of the present invention are as follows:
One, state machine module introduction:
1, various states machine combines, and sending and receiving for data is realized by shift register, as shown in figure 4, being I2C
SDA data receiver and transmission flow schematic diagram.
2, the state machine setting of I2C slave:
State machine operation conditions needs to read and write process according to I2C to be provided and be arranged, as shown in figure 5, reading in I2C
During writing, eight kinds of states are defined:
State:IDLE, READ ADDRESS, SEND ACK1, SEND ACK2, WRITE CMD, WRITE DATA, READ
CMD、WAIT ACK。
3, I2C state machine rotation process and control signal:
Please refer to Fig. 6 and Fig. 7, wherein Fig. 6 is the rotation flow chart of eight state machines of definition, and the figure shows numbers
According to the relationship of read-write process；Fig. 7 is eight state machine rotation flow simulation effect pictures.
The control signal of state machine involved in Fig. 6 and Fig. 7 is as follows:
→ start_strobe:I2C commencing signal；
→ stop_strobe:I2C end signal；
→ scl_falling_strobe:SCL failing edge signal；
→ bit_counter: counter defines a meter because I2C is transmitted according to 1 byte data
The counter of number 8 indicates whether the data of one byte are transmitted.
Two, BMC&I2C modularization Communication Control:
ALTERA CPLD logic chip is designed by state machine moduleization, receives I2C Data character by sending &, it is real
Existing BMC controls hard disk indication lamp.
1, recording disk information in place:
In data transmission procedure, byte 8 countings, each deposit a data, related definition such as 1 institute of table
Show:
Table 1
BMC reads the register of CPLD, operating process are as follows:
The address I2C of CPLD is first sent, read-write position is to write → R/W=' 0 ', is then followed by transmission command byte, selection is wanted
The register of reading, then after restart, the address I2C of CPLD is then sent, read-write position is reading → R/W=' 1 '.
Fig. 8 is the form schematic diagram that recording disk information in place reads CPLD register, wherein only list byte is supported to read.
As shown in figure 8, expression HDD4 is in place for example, reading 11101111 ＂ of CPLD register value ＂.
2, hard disk lighting control in place is realized:
Realize that the related definition of hard disk lighting control in place is as shown in table 2:
Table 2
BMC reads and writes the register of CPLD, and operating process is as follows:
The address I2C of CPLD is first sent, read-write position is to write → R/W=' 0 ', and being then followed by transmission command byte selection will write
Register, then send the data to be write.
Fig. 9 is to realize that the form schematic diagram of CPLD register is write in hard disk lighting control in place, wherein only supports list byte
It writes, writes the main function of CPLD order to realize and remove positioning hard disk with BMC.As shown in figure 9, for example writing ＂ toward CPLD
10000000 ＂, then HDD7 is positioned, and the amber light corresponding to HDD7 dodges 4HZ, realizes normal lighting.
3, recording disk lighting state in place:
In data transmission procedure, byte 8 countings, each deposit a data, related definition such as 3 institute of table
Show:
Table 3
BMC reads the register of CPLD, records lighting state information, and operating process is as follows:
The address I2C of CPLD is first sent, read-write position is to write → R/W=' 0 ', is then followed by transmission command byte, selection is wanted
The register of reading, then after restart, the address I2C of CPLD is then sent, read-write position is reading → R/W=' 1 '.
Figure 10 is the form schematic diagram that recording disk lighting state in place reads CPLD register, wherein only supports list byte
It reads.As shown in Figure 10, such as 10000000 ＂ of CPLD register value ＂ is read, indicates that HDD7 is executing locate state.
The beneficial effect of the method for BMC control hard disk indication lamp state of the present invention is:
1, various states machine mode executes read write command, is simple and efficient, intellectual management；
2, modularization poll executive mode, division of process's detail execute rigorous；
3, BMC intelligent management hard disk indication lamp, including reading hard disk are in place, the letter such as lighting and record lighting state
Breath；
4, modularization various states machine, program realize it is understandable, write do not allow it is error-prone, securely and reliably.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of method of BMC control hard disk indication lamp state, which is characterized in that the described method comprises the following steps:
In system initialization, CPLD is configured to include several state machines based on I2C Slave equipment, the CPLD with
It is connected between BMC by I2C communication protocol；
When hard disk is in place, the BMC sends the I2C of control hard disk indication lamp state by I2C communication protocol to the CPLD
Data character controls the hard disk indication lamp state according to the I2C Data character by the CPLD.
2. the method for BMC control hard disk indication lamp state according to claim 1, which is characterized in that several states
Machine include eight kinds of states: IDLE, READ ADDRESS, SEND ACK1, SEND ACK2, WRITE CMD, WRITE DATA,
READ CMD、WAIT ACK。
3. the method for BMC control hard disk indication lamp state according to claim 1, which is characterized in that described to exist in hard disk
When position, the BMC sends the I2C Data character of control hard disk indication lamp state by I2C communication protocol to the CPLD, by
The CPLD according to the I2C Data character control the hard disk indication lamp state the step of include:
When hard disk is in place, the BMC sends the I2C Data word of hard disk lighting in place by I2C communication protocol to the CPLD
Symbol realizes that hard disk lighting in place controls according to the I2C Data character by the CPLD.
4. the method for BMC control hard disk indication lamp state according to claim 3, which is characterized in that described to exist in hard disk
When position, the BMC sends the I2C Data character for realizing that hard disk lighting in place controls to the CPLD by I2C communication protocol,
Realize that the step of hard disk lighting in place controls includes: according to the I2C Data character by the CPLD
The BMC sends the address I2C of the CPLD to the CPLD, wherein read-write position is to write → R/W=' 0 '；
The BMC sends command byte to the CPLD, chooses the register for the CPLD to be write；
The BMC sends the data to be write to the CPLD.
5. the method for BMC control hard disk indication lamp state according to claim 3, which is characterized in that described to exist in hard disk
When position, the BMC sends the I2C Data character of control hard disk indication lamp state by I2C communication protocol to the CPLD, by
After the step of CPLD controls the hard disk indication lamp state according to the I2C Data character further include:
Recording disk lighting state in place.
6. the method for BMC control hard disk indication lamp state according to claim 5, which is characterized in that the recording disk
The step of lighting state in place includes:
The BMC sends the address I2C of the CPLD to the CPLD, wherein read-write position is to write → R/W=' 0 '；
The BMC sends command byte to the CPLD, chooses the register for the CPLD to be write；
Again after restart, the address I2C of the CPLD is sent to the CPLD, wherein read-write position is reading → R/W=' 1 '.
7. the method for BMC control hard disk indication lamp state according to claim 1, which is characterized in that described to exist in hard disk
When position, the BMC sends the I2C Data character of control hard disk indication lamp state by I2C communication protocol to the CPLD, by
Include: before the step of CPLD controls the hard disk indication lamp state according to the I2C Data character
Recording disk information in place.
8. the method for BMC control hard disk indication lamp state according to claim 7, which is characterized in that the recording disk
The step of information in place includes:
The BMC sends the address I2C of the CPLD to the CPLD, wherein read-write position is to write → R/W=' 0 '；
The BMC sends command byte to the CPLD, chooses the register for the CPLD to be write；
Again after restart, the BMC sends the address I2C of the CPLD to the CPLD, wherein read-write position is reading → R/W=
‘1’。
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| CN110162446A (en) * | 2019-04-13 | 2019-08-23 | 深圳市同泰怡信息技术有限公司 | A kind of backboard hard disk ignition method based on BMC |
| CN110441713A (en) * | 2019-07-12 | 2019-11-12 | 苏州浪潮智能科技有限公司 | A method of passing through the automatic testing service device LED light stability of BMC |
| CN114758715A (en) * | 2022-04-29 | 2022-07-15 | 浪潮(山东)计算机科技有限公司 | Method, device and equipment for lighting hard disk fault lamp and readable storage medium |
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