CN103412838B - A kind of expanding system, communication means, address configuration method, equipment and device - Google Patents
A kind of expanding system, communication means, address configuration method, equipment and device Download PDFInfo
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- CN103412838B CN103412838B CN201310320009.6A CN201310320009A CN103412838B CN 103412838 B CN103412838 B CN 103412838B CN 201310320009 A CN201310320009 A CN 201310320009A CN 103412838 B CN103412838 B CN 103412838B
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Abstract
The invention discloses a kind of expanding system, communication means, address configuration method, equipment and device, comprise and treat expansion equipment and multiple expansion card, treat that expansion equipment connects the plurality of expansion card by a management bus port, and connect the plurality of expansion card respectively by multiple Extended Capabilities Port; The pin N number of able to programme of the controller in each expansion card is connected with N number of address pins one_to_one corresponding of each device on the management bus in this expansion card, and N number of address pins of each device is the address pins of specifying N position correspondence in the configurable position of the management bus address of this device; N is the minimum value in the address size that the plurality of expansion card is corresponding respectively; The address size that each expansion card is corresponding is the minimum value of the figure place of the configurable position of the management bus address of each device on the management bus in this expansion card.Adopt scheme provided by the invention, the problem treating the failure of expansion equipment access expansion card that management bus address conflict when expansion equipment connects multiple expansion card causes can be solved.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of expanding system, communication means, the collocation method of management bus address, equipment and device.
Background technology
Now widely used expansion card has many types, as PCIe (PeripheralComponentInterconnectExpress, peripheral component interconnect express passway) expansion card etc., in order to improve reliability and maintainability, in expansion card, all some environment can be set, state-detection device and memory device etc., as temperature sensor, EEPROM (ElectricallyErasableProgrammableReadOnlyMemory, electricity erasing programmable read only memory) etc. device, these devices are mounted on the management bus in expansion card, under normal circumstances, multiple identical above-mentioned device can not be set in an expansion card.Treat that expansion equipment (as server, industrial computer etc.) is connected expansion card by Extended Capabilities Port with management bus port, common expansion card has network interface card, RAID (RedundantArrayofInexpensiveDisks, the redundant array of inexpensive disk) card, SSD (SolidStateDrive, solid-state disk) etc., therefore, it is possible to improve the interface capability, memory capacity etc. for the treatment of expansion equipment.Owing to treating that expansion equipment can access expansion card by management bus, communicate with the device be mounted in expansion card on this management bus, each device therefore on a management bus must have mutually different management bus address.
For the PCIe expansion card shown in Fig. 1, the management bus that PCIe expansion card adopts is I2C (InterIntegratedCircuit, between integrated circuit) bus, the device such as detection means and memory device is mounted in the I2C bus in PCIe expansion card, treat that expansion equipment is connected PCIe expansion card by PCIe port with I2C port, PCIe expansion card is for treating the business function that expansion equipment provides different.I2C bus address has 7, and wherein high 4 or high 5 is producer's configuration bit, and by device, producer configures, and different components is different, can not revise after dispatching from the factory, and low 3 or low 2 is configurable position, can be configured by user.There is each one_to_one corresponding of address pins and configurable position in device pin, in prior art, carrying out the level of configuration device address pins by arranging external pull-up resistor or pull down resistor, and then realize the configuration of I2C bus address low 3 or low 2.
But, present inventor finds, in the prior art, when being only connected to an expansion card until expansion equipment by a management bus, this management bus there will not be identical device, and each device namely on this management bus has mutually different management bus address; And when being connected to multiple expansion card until expansion equipment by a management bus, this management bus may there is multiple identical device, producer's configuration bit of these identical device management bus addresss is identical, if the configuration of non-essential resistance is also identical, then the configurable position of management bus address is also identical, namely a management bus may exist the identical device in management bus address; If when expansion equipment is connected to multiple identical expansion card by a management bus, a management bus is bound to there is the identical device in management bus address.Communicate at this moment, will conflict be produced, cause treating the failure of expansion equipment access expansion card.
Summary of the invention
The embodiment of the present invention provides a kind of expanding system, communication means, the collocation method of management bus address, equipment and device, in order to solve the problem treating the failure of expansion equipment access expansion card that management bus address conflict when expansion equipment connects multiple expansion card causes.
First aspect, provides a kind of expanding system, comprises and treats expansion equipment and multiple expansion card, wherein:
Describedly treat that expansion equipment connects described multiple expansion card by management bus port, and connect described multiple expansion card respectively by multiple Extended Capabilities Port;
The pin N number of able to programme of the controller in each expansion card is connected with N number of address pins one_to_one corresponding of each device on the management bus in this expansion card, and N number of address pins of each device is the address pins of specifying N position correspondence in the configurable position of the management bus address of this device; N is the minimum value in the address size that described multiple expansion card is corresponding respectively; The address size that each expansion card is corresponding is the minimum value of the figure place of the configurable position of the management bus address of each device on the management bus in this expansion card.
In conjunction with first aspect, in the implementation that the first is possible, described pin able to programme is specially universal input and exports GPIO pin.
Second aspect, provides a kind of communication means of expanding system as described in relation to the first aspect, comprising:
Treat that expansion equipment sends the access request message of carrying management bus address to each device on the management bus in multiple expansion card;
The response message that the device that receiving management bus address is identical with the management bus address of carrying in described request of access returns;
Wherein, the level of the pin N number of able to programme of the controller in part or all of expansion card is treat that expansion equipment is configured according to the relation of the minimum value N in the corresponding respectively address size of the quantity M of expansion card and described multiple expansion card, and specifies the level of the pin N number of able to programme of the controller in expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; The level of the pin N number of able to programme of the controller in each expansion card characterizes the value of specifying N position in the configurable position of the management bus address of each device on the management bus in this expansion card.
In conjunction with second aspect, in the implementation that the first is possible, the level of the pin N number of able to programme of the controller in part or all of expansion card, is specially and treats that expansion equipment is according to the quantity M of expansion card and 2
nmagnitude relationship to be configured.
In conjunction with the first possible implementation of second aspect, in the implementation that the second is possible, the level of the pin N number of able to programme of the controller in part or all of expansion card is specifically determined in the following way:
When the quantity M of expansion card is less than or equal to 2
ntime, treat that expansion equipment configures the level of the pin N number of able to programme of the controller in each expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card;
When the quantity M of expansion card is greater than 2
ntime, treat that expansion equipment is configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach not identical with the level of the pin N number of able to programme of the controller in other expansion card by the level of the pin N number of able to programme of the controller in accessed expansion card.
In conjunction with the first possible implementation of second aspect, second aspect or the possible implementation of the second of second aspect, in the implementation that the third is possible, minimum value N in the address size that described multiple expansion card is corresponding respectively, specifically determines in the following way:
Treat that expansion equipment obtains the identification information of the controller in described multiple expansion card;
According to the identification information of the controller in the expansion card prestored and the corresponding relation of address size, determine the address size that described multiple expansion card is corresponding respectively; And
In the address size that the described multiple expansion cards determined are corresponding respectively, determine minimum value N wherein.
The third aspect, provides the collocation method of the management bus address of device in a kind of expanding system as described in relation to the first aspect, comprising:
Determine the relation of the minimum value N in the address size treating that the quantity M of the expansion card that expansion equipment connects is corresponding respectively be connected each expansion card; The address size that each expansion card is corresponding is the minimum value of the figure place of configurable position in the management bus address of each device on the management bus in this expansion card;
According to the described relation determined, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach and specify the level of pin N number of able to programme of the controller in expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; The level of the pin N number of able to programme of the controller in each expansion card characterizes the value of specifying N position in the management bus address of each device on the management bus in this expansion card in configurable position.
In conjunction with the third aspect, in the implementation that the first is possible, determine the relation of the minimum value N in the address size treating that the quantity M of the expansion card that expansion equipment connects is corresponding respectively be connected each expansion card, be specially:
Determine the quantity M and 2 treating the expansion card that expansion equipment connects
nmagnitude relationship, described N for described in treat in the address size that each expansion card that expansion equipment connects is corresponding respectively minimum value.
In conjunction with the first possible implementation of the third aspect, in the implementation that the second is possible, according to the described relation determined, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach and specify the level of pin N number of able to programme of the controller in expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card, be specially:
When treating that the quantity M of the expansion card that expansion equipment connects is less than or equal to 2
ntime, configure the level of the pin N number of able to programme of the controller in each expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card;
When treating that the quantity M of the expansion card that expansion equipment connects is greater than 2
ntime, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach not identical with the level of the pin N number of able to programme of the controller in other expansion card by the level of the pin N number of able to programme of the controller in accessed expansion card.
In conjunction with the first possible implementation of the third aspect, the third aspect or the possible implementation of the second of the third aspect, in the implementation that the third is possible, treat the minimum value N in the address size of each expansion card difference correspondence that expansion equipment connects, specifically determine in the following way:
Obtain the identification information of the controller treated in each expansion card that expansion equipment connects;
According to the identification information of the controller in the expansion card prestored and the corresponding relation of address size, determine the address size that each expansion card is corresponding respectively; And
In the address size that each expansion card determined is corresponding respectively, determine minimum value N wherein.
Fourth aspect, provides and treats expansion equipment in a kind of expanding system as described in relation to the first aspect, comprising:
Transmitting element, for sending the access request message of carrying management bus address to each device on the management bus in multiple expansion card;
Receiving element, the response message that the identical device in the management bus address for carrying in receiving management bus address and described request of access returns;
Wherein, the level of the pin N number of able to programme of the controller in part or all of expansion card is treat that expansion equipment is configured according to the relation of the minimum value N in the corresponding respectively address size of the quantity M of expansion card and described multiple expansion card, and specifies the level of the pin N number of able to programme of the controller in expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; The level of the pin N number of able to programme of the controller in each expansion card characterizes the value of specifying N position in the configurable position of the management bus address of each device on the management bus in this expansion card.
In conjunction with fourth aspect, in the implementation that the first is possible, also comprise dispensing unit, specifically for the quantity M and 2 according to expansion card
nmagnitude relationship, the level of the pin N number of able to programme of the controller in part or all of expansion card is configured.
In conjunction with the first possible implementation of fourth aspect, in the implementation that the second is possible, described dispensing unit, is less than or equal to 2 specifically for the quantity M when expansion card
ntime, configure the level of the pin N number of able to programme of the controller in each expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; When the quantity M of expansion card is greater than 2
ntime, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach not identical with the level of the pin N number of able to programme of the controller in other expansion card by the level of the pin N number of able to programme of the controller in accessed expansion card.
In conjunction with the first possible implementation of fourth aspect, fourth aspect or the possible implementation of the second of fourth aspect, in the implementation that the third is possible, described dispensing unit, also for obtaining the identification information of the controller in described multiple expansion card; According to the identification information of the controller in the expansion card prestored and the corresponding relation of address size, determine the address size that described multiple expansion card is corresponding respectively; And in the address size that the described multiple expansion cards determined are corresponding respectively, determine minimum value N wherein.
5th aspect, provides the inking device of the management bus address of device in a kind of expanding system as described in relation to the first aspect, comprising:
Determining unit, for determining the relation of the minimum value N treated in the address size of the quantity M of the expansion card that expansion equipment connects and be connected each expansion card difference correspondence; The address size that each expansion card is corresponding is the minimum value of the figure place of configurable position in the management bus address of each device on the management bus in this expansion card;
Dispensing unit, for according to the described relation determined, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach and specify the level of pin N number of able to programme of the controller in expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; The level of the pin N number of able to programme of the controller in each expansion card characterizes the value of specifying N position in the management bus address of each device on the management bus in this expansion card in configurable position.
In conjunction with the 5th aspect, in the implementation that the first is possible, described determining unit, specifically for determining the quantity M and 2 treating the expansion card that expansion equipment connects
nmagnitude relationship, described N for described in treat in the address size that each expansion card that expansion equipment connects is corresponding respectively minimum value.
In conjunction with the first possible implementation of the 5th aspect, in the implementation that the second is possible, specifically for working as, described dispensing unit, treats that the quantity M of the expansion card that expansion equipment connects is less than or equal to 2
ntime, configure the level of the pin N number of able to programme of the controller in each expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; When treating that the quantity M of the expansion card that expansion equipment connects is greater than 2
ntime, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach not identical with the level of the pin N number of able to programme of the controller in other expansion card by the level of the pin N number of able to programme of the controller in accessed expansion card.
In conjunction with the first possible implementation of the 5th aspect, the 5th aspect or the possible implementation of the second of the 5th aspect, in the implementation that the third is possible, described determining unit, also for obtain treat that expansion equipment connects each expansion card in the identification information of controller; According to the identification information of the controller in the expansion card prestored and the corresponding relation of address size, determine the address size that each expansion card is corresponding respectively; And in the address size that each expansion card determined is corresponding respectively, determine minimum value N wherein.
According to the expanding system that first aspect provides, the communication means that second aspect provides, the collocation method of the management bus address that the third aspect provides, what fourth aspect provided treats expansion equipment, the inking device of the management bus address that the 5th aspect provides, can by the value of the appointment N position in configurable position in the management bus address of each device on the management bus in the level configuration expansion card of the pin N number of able to programme of the controller in configuration expansion card, for appointment expansion card, configure the level of the pin N number of able to programme of the controller in this expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card, solve the problem treating the failure of expansion equipment access expansion card that management bus address conflict when expansion equipment connects multiple expansion card causes.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for instructions, is used from explanation the present invention, is not construed as limiting the invention with the embodiment of the present invention one.In the accompanying drawings:
Fig. 1 is the schematic diagram of PCIe expansion card of the prior art;
The expanding system schematic diagram that Fig. 2 provides for the embodiment of the present invention;
One of PCIe expanding system schematic diagram that Fig. 3 provides for the embodiment of the present invention;
The PCIe expanding system schematic diagram two that Fig. 4 provides for the embodiment of the present invention;
The process flow diagram of the communication means that Fig. 5 provides for the embodiment of the present invention;
The process flow diagram of the collocation method of the management bus address that Fig. 6 provides for the embodiment of the present invention;
The detail flowchart of the collocation method of the management bus address that Fig. 7 provides for the embodiment of the present invention;
The structural representation treating expansion equipment that Fig. 8 provides for the embodiment of the present invention;
The structural representation of the inking device of the management bus address that Fig. 9 provides for the embodiment of the present invention.
Embodiment
In order to provide the implementation treating the problem of expansion equipment access expansion card failure solving management bus address conflict when expansion equipment connects multiple expansion card and cause, embodiments provide a kind of expanding system, communication means, the collocation method of management bus address, equipment and device, below in conjunction with Figure of description, the preferred embodiments of the present invention are described, be to be understood that, preferred embodiment described herein, only for instruction and explanation of the present invention, is not intended to limit the present invention.And when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Embodiments provide a kind of expanding system, as shown in Figure 2, comprise and treat expansion equipment and multiple expansion card, wherein:
Treat that expansion equipment connects the plurality of expansion card by a management bus port, and connect the plurality of expansion card respectively by multiple Extended Capabilities Port; The pin N number of able to programme of the controller in each expansion card is connected with N number of address pins one_to_one corresponding of each device on the management bus in this expansion card, and N number of address pins of each device is the address pins of specifying N position correspondence in the configurable position of the management bus address of this device; N is the minimum value in the address size that the plurality of expansion card is corresponding respectively; The address size that each expansion card is corresponding is the minimum value of the figure place of the configurable position of the management bus address of each device on the management bus in this expansion card.
Management bus in expansion card in the embodiment of the present invention can not be arranged multiple identical device.
Above-mentioned expansion card is specifically as follows PCIe expansion card, management bus is specifically as follows I2C bus, the pin N number of able to programme of the controller in PCIe expansion card is connected with N number of address pins one_to_one corresponding of each device in the I2C bus in this PCIe expansion card, because I2C bus address has 7, low 3 or low 2 is configurable position, so N number of address pins of each device is the address pins of low N position correspondence in the I2C bus address of this device.
In the expanding system shown in Fig. 3, treat that expansion equipment connects 2 PCIe expansion cards; In the expanding system shown in Fig. 4, treat that expansion equipment connects 5 PCIe expansion cards.Suppose that the PCIe expansion card in Fig. 3, Fig. 4 is identical, in the I2C bus address of each device in the I2C bus in each PCIe expansion card, the minimum value of the figure place of configurable position is 2, and the address size that namely this PCIe expansion card is corresponding is 2, then minimum value N is 2.So, 2 pins able to programme of the controller in PCIe expansion card are connected with 2 address pins one_to_one corresponding of each device in the I2C bus in this PCIe expansion card, and these 2 address pins are low 2 corresponding address pins in the I2C bus address of device.
Preferably, this pin able to programme is specifically as follows GPIO (GeneralPurposeInput/Output, universal input exports) pin, adopt GPIO pin comparatively simple, be easy to realize, if controller does not provide GPIO pin, also GPIO pin can be expanded by other pin.
GPIO pin is only an example, and pin able to programme also can be the pin that other pin level can be configured amendment.
Based on the above-mentioned expanding system that the embodiment of the present invention provides, the embodiment of the present invention provides a kind of communication means, as shown in Figure 5, comprises the steps:
Step 501, treat that expansion equipment sends the access request message of carrying management bus address to each device on the management bus in multiple expansion card;
Step 502, treat the response message that the device that expansion equipment receiving management bus address is identical with the management bus address of carrying in this request of access returns;
Wherein, the level of the pin N number of able to programme of the controller in part or all of expansion card is treat that expansion equipment is configured according to the relation of the minimum value N in the corresponding respectively address size of the quantity M of expansion card and the plurality of expansion card, and specifies the level of the pin N number of able to programme of the controller in expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; The level of the pin N number of able to programme of the controller in each expansion card characterizes the value of specifying N position in the configurable position of the management bus address of each device on the management bus in this expansion card.
After treating that expansion equipment receives response message, device that can be identical with the management bus address of carrying in this management bus address and request of access carries out data transmission.
Further, the level of the pin N number of able to programme of the controller in part or all of expansion card, is specially and treats that expansion equipment is according to the quantity M of expansion card and 2
nmagnitude relationship to be configured.
Further, the level of the pin N number of able to programme of the controller in part or all of expansion card is specifically determined in the following way:
When the quantity M of expansion card is less than or equal to 2
ntime, treat that expansion equipment configures the level of the pin N number of able to programme of the controller in each expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; When the quantity M of expansion card is greater than 2
ntime, treat that expansion equipment is configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach not identical with the level of the pin N number of able to programme of the controller in other expansion card by the level of the pin N number of able to programme of the controller in accessed expansion card.
Further, the minimum value N in the address size that the plurality of expansion card is corresponding respectively, specifically determines in the following way:
Treat that expansion equipment obtains the identification information of the controller in the plurality of expansion card; According to the identification information of the controller in the expansion card prestored and the corresponding relation of address size, determine the address size that the plurality of expansion card is corresponding respectively; And in the address size that the plurality of expansion card determined is corresponding respectively, determine minimum value N wherein.
Treat that the detailed step of expansion equipment configuration management bus address can see following embodiment.
Based on the above-mentioned expanding system that the embodiment of the present invention provides, the embodiment of the present invention provides a kind of collocation method of management bus address of device, as shown in Figure 6, comprises the steps:
Step 601, determine to treat the relation of the minimum value N in the quantity M of the expansion card that expansion equipment connects and the corresponding respectively address size of be connected each expansion card; The address size that each expansion card is corresponding is the minimum value of the figure place of configurable position in the management bus address of each device on the management bus in this expansion card;
Step 602, according to the relation determined, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach and specify the level of pin N number of able to programme of the controller in expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; The level of the pin N number of able to programme of the controller in each expansion card characterizes the value of specifying N position in the management bus address of each device on the management bus in this expansion card in configurable position.
Further, step 601 is specifically as follows the quantity M and 2 determining to treat the expansion card that expansion equipment connects
nmagnitude relationship.
Further, step 602 is according to the quantity M and 2 treating the expansion card that expansion equipment connects determined
nmagnitude relationship, when configuring the level of pin N number of able to programme of the controller in expansion card, specifically have the following two kinds situation:
Situation one: when treating that the quantity M of the expansion card that expansion equipment connects is less than or equal to 2
ntime, using each expansion card as appointment expansion card, configure the level of the pin N number of able to programme of the controller in each expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card;
Such as, in figure 3, treat that the quantity M of the PCIe expansion card that expansion equipment self connects is 2, minimum value N in the address size that each PCIe expansion card is corresponding is respectively 2, treat the value of in the I2C bus address of the device in expansion equipment can configure in each PCIe expansion card I2C bus by the level of 2 pins able to programme of the controller in each PCIe expansion card of configuration low 2, the device that I2C bus address is identical is there is by configuring on multiple PCIe expansion cards that this value of low 2 avoids treating that expansion equipment connects, this value of low 2 can be configured to 00, 01, 10 and 11 4 kind, therefore the device in the I2C bus in 4 PCIe expansion cards can be distinguished by this value of low 2, namely 2
nindividual.When the quantity M of PCIe expansion card is less than or equal to 2
ntime, can directly the level of the pin able to programme of the controller in all PCIe expansion cards be configured different, now the device that I2C bus address is identical can not appear in each PCIe expansion card.
Situation two: when treating that the quantity M of the expansion card that expansion equipment connects is greater than 2
ntime, using by accessed expansion card as appointment expansion card, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach not identical with the level of the pin N number of able to programme of the controller in other expansion card by the level of the pin N number of able to programme of the controller in accessed expansion card;
Such as, in the diagram, treat that the quantity M of the PCIe expansion card that expansion equipment self connects is 5, the minimum value N in the address size that each PCIe expansion card is corresponding is respectively 2, owing to can only distinguish 2 at most by the value of the N number of pin able to programme of configuration
ndevice in I2C bus in individual PCIe expansion card, when the quantity M of PCIe expansion card is greater than 2
ntime, the method for time-sharing multiplex can being adopted, only for by accessed PCIe expansion card, making the device by there is not address conflict on accessed PCIe expansion card and on other PCIe expansion card.
Below in conjunction with accompanying drawing, with specific embodiment, method provided by the invention is described in detail.
In embodiments of the present invention, treat that the expansion card that expansion equipment specifically connects is PCIe expansion card, and treat that multiple PCIe expansion cards that expansion equipment connects are identical PCIe expansion card, I2C bus exists identical device.In embodiments of the present invention, treat that the minimum value N in the address size that each PCIe expansion card that expansion equipment connects is corresponding respectively is also 2,2 GPIO pins of the controller in each PCIe expansion card are connected with 2 address pins one_to_one corresponding of each device in the I2C bus in this PCIe expansion card, and 2 address pins of each device are low 2 corresponding address pins in the I2C bus address of each device.
In embodiments of the present invention, the executive agent of scheme is for treating expansion equipment, and in other embodiments of the present invention, the executive agent of scheme also can be miscellaneous equipment.
Shown in Fig. 7, the detail flowchart of the collocation method of the management bus address provided for the embodiment of the present invention, specifically comprises the steps:
Step 701, treat the quantity M of the PCIe expansion card that expansion equipment is determined self to connect, and the minimum value N in the corresponding respectively address size of each PCIe expansion card connected.
In prior art, the controller in each PCIe expansion card is equipped with identification information, comprises producer mark VendorID and device identification DeviceID.Treat that expansion equipment can by each PCIe port of scanning, the identification information of the controller in the PCIe expansion card that acquisition connects, determine the quantity of PCIe expansion card, the identification information of the controller in PCIe expansion card and the corresponding relation of address size can be stored in advance in be treated in expansion equipment, treat that expansion equipment determines the address size that connected each PCIe expansion card is corresponding respectively, and in the address size that each expansion card determined is corresponding respectively, determine minimum value N wherein.
Step 702, treat that expansion equipment judges whether the quantity M of PCIe expansion card is greater than 2
n.
When the quantity M of PCIe expansion card is not more than 2
ntime, enter step 703; When the quantity M of PCIe expansion card is greater than 2
ntime, enter step 705.
In embodiments of the present invention, if as shown in Figure 3, the quantity M of PCIe expansion card is that the quantity M of 2, PCIe expansion card is not more than 2
n, now enter step 703; If as shown in Figure 4, the quantity M of PCIe expansion card is that the quantity M of 5, PCIe expansion card is greater than 2
n, now enter step 705.
Step 703, treat the PCIe port numbers treating expansion equipment that expansion equipment is corresponding according to each PCIe expansion card to configure the level of N number of GPIO pin of the controller in each PCIe expansion card.
Such as, in Fig. 3, if the PCIe port numbers of PCIe expansion card 1 correspondence is 0, the level that the binary numeral that the level of the GPIO pin of 2 in PCIe expansion card 1 is configured to 0 correspondence can be represented, i.e. 00 level represented, namely 2 GPIO pins are all configured to low level, and now, low 2 of the I2C bus address of each device in the I2C bus in PCIe expansion card 1 are 00.
In like manner, if the PCIe port numbers of PCIe expansion card 2 correspondence is 1, the level that the binary numeral that the level of the GPIO pin of 2 in PCIe expansion card 2 is configured to 1 correspondence can be represented, i.e. 01 level represented, namely corresponding with I2C bus address lowest order in 2 GPIO pins pin level is configured to high level, another pin configuration is low level, and now, low 2 of the I2C bus address of each device in the I2C bus in PCIe expansion card 2 are 01.
For the position of not carrying out in the method that the embodiment of the present invention in the configurable position of each device provides setting, alternate manner can be adopted to be configured to predetermined level, thus form 7 complete I2C bus addresss of each device.
Step 704, step 703 configuration terminate after, wait expand can to connect each PCIe expansion card conduct interviews successively.
This flow process terminates.
Step 705, treat the PCIe port numbers treating expansion equipment that expansion equipment is corresponding according to each PCIe expansion card to configure front 2
nthe level of N number of GPIO pin of the controller in-1 PCIe expansion card, by other M-2
nthe level of N number of GPIO pin of the controller in+1 PCIe expansion card is all configured to 2
nthe level that the binary value of-1 correspondence represents.
Namely expansion equipment is treated first by front 2
nthe value of the low N position of the I2C address of each device in the I2C bus in-1 PCIe expansion card is configured to 0 to 2 successively
nthe binary value of-2 correspondences, by other M-2
nthe value of the low N position of the I2C address of each device in the I2C bus in+1 PCIe expansion card is all configured to 2
nthe binary value of-1 correspondence, now, front 2
nthe value of the low N position of the I2C address of each device in the I2C bus in-1 PCIe expansion card is different, there is not the problem of the I2C bus address conflict of device.
Step 706, treat that expansion equipment accesses front 2 successively
n-1 PCIe expansion card.
Step 707, treat that expansion equipment is by access the 2nd
nduring individual arbitrary PCIe expansion card in M PCIe expansion card, the level of the N number of GPIO pin by the controller in accessed PCIe expansion card is configured to 2
nthe level that the binary value of-1 correspondence represents, is configured to other by the level of N number of GPIO pin of the controller in other PCIe expansion card.
Namely by access the 2nd
nduring individual PCIe expansion card, the value of the rear N position of the I2C address of each device in the I2C bus in other PCIe expansion card is all configured to and 2
nthe value that the binary value of-1 correspondence is different, in access the 2nd
nafter individual PCIe expansion card terminates, by access the 2nd
nduring+1 PCIe expansion card, by the 2nd
nthe value of the low N position of the I2C address of each device in the I2C bus in+1 PCIe expansion card is configured to and 2
nthe binary value of-1 correspondence, is all configured to the value of the low N position of the I2C address of each device in the I2C bus in other PCIe expansion card and 2
nthe value that the binary value of-1 correspondence is different ... go down successively, until the access of all PCIe expansion cards terminates.
Such as, in Fig. 4, treat expansion equipment can first by the value initial configuration of low 2 of the I2C address of each device in the I2C bus in each PCIe expansion card as following table:
| PCIe expansion card is numbered | 1 | 2 | 3 | 4 | 5 |
| I2C bus address low 2 | 00 | 01 | 10 | 11 | 11 |
After terminating until expansion equipment access expansion card 1-expansion card 3, when being about to access expansion card 4, the value of low 2 of the I2C address of each device in the I2C bus in expansion card 5 can be configured to the value different with the value of low 2 of the I2C address of each device in the I2C bus in expansion card 4, as 00, as shown in the table:
| PCIe expansion card is numbered | 1 | 2 | 3 | 4 | 5 |
| I2C bus address low 2 | 00 | 01 | 10 | 11 | 00 |
After terminating until expansion equipment access expansion card 4, when being about to access expansion card 5, can be 11 by the value recovery configuring of low 2 of the I2C address of each device in the I2C bus in expansion card 5, the value of low 2 of the I2C address of each device in the I2C bus in expansion card 4 is configured to other value, as 00, as shown in the table:
| PCIe expansion card is numbered | 1 | 2 | 3 | 4 | 5 |
| I2C bus address low 2 | 00 | 01 | 10 | 00 | 11 |
After terminating until expansion equipment access expansion card 5, can initial configuration be returned to, as shown in the table:
| PCIe expansion card is numbered | 1 | 2 | 3 | 4 | 5 |
| I2C bus address low 2 | 00 | 01 | 10 | 11 | 11 |
The address above mentioned time-sharing multiplex scheme that the embodiment of the present invention provides is only an example, also other scheme can be adopted in other embodiments of the invention, as long as ensure different with the level of the pin able to programme of the controller in other expansion card by the level of the pin able to programme of the controller in accessed expansion card.
Visible, the method adopting the embodiment of the present invention to provide, can solve the problem treating the failure of expansion equipment access expansion card that management bus address conflict when expansion equipment connects multiple expansion card causes.
Based on same inventive concept, according to the communication means that the above embodiment of the present invention provides, correspondingly, the embodiment of the present invention also provides one to treat expansion equipment, and its structural representation as shown in Figure 8, specifically comprises:
Transmitting element 801, for sending the access request message of carrying management bus address to each device on the management bus in multiple expansion card;
Receiving element 802, the response message that the identical device in the management bus address for carrying in receiving management bus address and this request of access returns;
Wherein, the level of the pin N number of able to programme of the controller in part or all of expansion card is treat that expansion equipment is configured according to the relation of the minimum value N in the corresponding respectively address size of the quantity M of expansion card and the plurality of expansion card, and specifies the level of the pin N number of able to programme of the controller in expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; The level of the pin N number of able to programme of the controller in each expansion card characterizes the value of specifying N position in the configurable position of the management bus address of each device on the management bus in this expansion card.
Further, this treats expansion equipment, also comprises dispensing unit 803, specifically for the quantity M and 2 according to expansion card
nmagnitude relationship, the level of the pin N number of able to programme of the controller in part or all of expansion card is configured.
Further, dispensing unit 803, is less than or equal to 2 specifically for the quantity M when expansion card
ntime, configure the level of the pin N number of able to programme of the controller in each expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; When the quantity M of expansion card is greater than 2
ntime, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach not identical with the level of the pin N number of able to programme of the controller in other expansion card by the level of the pin N number of able to programme of the controller in accessed expansion card.
Further, dispensing unit 803, also for obtaining the identification information of the controller in the plurality of expansion card; According to the identification information of the controller in the expansion card prestored and the corresponding relation of address size, determine the address size that the plurality of expansion card is corresponding respectively; And in the address size that the plurality of expansion card determined is corresponding respectively, determine minimum value N wherein.
Based on same inventive concept, according to the collocation method of the management bus address that the above embodiment of the present invention provides, correspondingly, the embodiment of the present invention also provides a kind of inking device of management bus address, and its structural representation as shown in Figure 9, specifically comprises:
Determining unit 901, for determining the relation of the minimum value N treated in the address size of the quantity M of the expansion card that expansion equipment connects and be connected each expansion card difference correspondence; The address size that each expansion card is corresponding is the minimum value of the figure place of configurable position in the management bus address of each device on the management bus in this expansion card;
Dispensing unit 902, for according to the relation determined, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach and specify the level of pin N number of able to programme of the controller in expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; The level of the pin N number of able to programme of the controller in each expansion card characterizes the value of specifying N position in the management bus address of each device on the management bus in this expansion card in configurable position.
Further, determining unit 901, specifically for determining the quantity M and 2 treating the expansion card that expansion equipment connects
nmagnitude relationship, N is for treating the minimum value in the address size that each expansion card that expansion equipment connects is corresponding respectively.
Further, specifically for working as, dispensing unit 902, treats that the quantity M of the expansion card that expansion equipment connects is less than or equal to 2
ntime, configure the level of the pin N number of able to programme of the controller in each expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; When treating that the quantity M of the expansion card that expansion equipment connects is greater than 2
ntime, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach not identical with the level of the pin N number of able to programme of the controller in other expansion card by the level of the pin N number of able to programme of the controller in accessed expansion card.
Further, determining unit 901, also for obtain treat that expansion equipment connects each expansion card in the identification information of controller; According to the identification information of the controller in the expansion card prestored and the corresponding relation of address size, determine the address size that each expansion card is corresponding respectively; And in the address size that each expansion card determined is corresponding respectively, determine minimum value N wherein.
The function of above-mentioned each unit may correspond to the respective handling step in flow process shown in Fig. 3 or Fig. 5, does not repeat them here.
In sum, the scheme that the embodiment of the present invention provides, comprises and treats expansion equipment and multiple expansion card, wherein: treat that expansion equipment connects the plurality of expansion card by a management bus port, and connect the plurality of expansion card respectively by multiple Extended Capabilities Port; The pin N number of able to programme of the controller in each expansion card is connected with N number of address pins one_to_one corresponding of each device on the management bus in this expansion card, and N number of address pins of each device is the address pins of specifying N position correspondence in the configurable position of the management bus address of this device; N is the minimum value in the address size that the plurality of expansion card is corresponding respectively; The address size that each expansion card is corresponding is the minimum value of the figure place of the configurable position of the management bus address of each device on the management bus in this expansion card.The scheme adopting the embodiment of the present invention to provide, solves the problem treating the failure of expansion equipment access expansion card that management bus address conflict when expansion equipment connects multiple expansion card causes.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (18)
1. an expanding system, is characterized in that, comprises and treats expansion equipment and multiple expansion card, wherein:
Describedly treat that expansion equipment connects described multiple expansion card by management bus port, and connect described multiple expansion card respectively by multiple Extended Capabilities Port;
The pin N number of able to programme of the controller in each expansion card is connected with N number of address pins one_to_one corresponding of each device on the management bus in this expansion card, and N number of address pins of each device is the address pins of specifying N position correspondence in the configurable position of the management bus address of this device; N is the minimum value in the address size that described multiple expansion card is corresponding respectively; The address size that each expansion card is corresponding is the minimum value of the figure place of the configurable position of the management bus address of each device on the management bus in this expansion card.
2. the system as claimed in claim 1, is characterized in that, described pin able to programme is specially universal input and exports GPIO pin.
3. a communication means for expanding system as claimed in claim 1, is characterized in that, comprising:
Treat that expansion equipment sends the access request message of carrying management bus address to each device on the management bus in multiple expansion card;
The response message that the device that receiving management bus address is identical with the management bus address of carrying in described request of access returns;
Wherein, the level of the pin N number of able to programme of the controller in part or all of expansion card is treat that expansion equipment is configured according to the relation of the minimum value N in the corresponding respectively address size of the quantity M of expansion card and described multiple expansion card, and specifies the level of the pin N number of able to programme of the controller in expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; The level of the pin N number of able to programme of the controller in each expansion card characterizes the value of specifying N position in the configurable position of the management bus address of each device on the management bus in this expansion card.
4. method as claimed in claim 3, is characterized in that, the level of the pin N number of able to programme of the controller in part or all of expansion card, is specially and treats that expansion equipment is according to the quantity M of expansion card and 2
nmagnitude relationship to be configured.
5. method as claimed in claim 4, it is characterized in that, the level of the pin N number of able to programme of the controller in part or all of expansion card is specifically determined in the following way:
When the quantity M of expansion card is less than or equal to 2
ntime, treat that expansion equipment configures the level of the pin N number of able to programme of the controller in each expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card;
When the quantity M of expansion card is greater than 2
ntime, treat that expansion equipment is configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach not identical with the level of the pin N number of able to programme of the controller in other expansion card by the level of the pin N number of able to programme of the controller in accessed expansion card.
6. the method as described in as arbitrary in claim 3-5, is characterized in that, the minimum value N in the address size that described multiple expansion card is corresponding respectively, specifically determines in the following way:
Treat that expansion equipment obtains the identification information of the controller in described multiple expansion card;
According to the identification information of the controller in the expansion card prestored and the corresponding relation of address size, determine the address size that described multiple expansion card is corresponding respectively; And
In the address size that the described multiple expansion cards determined are corresponding respectively, determine minimum value N wherein.
7. the collocation method of the management bus address of device in expanding system as claimed in claim 1, is characterized in that, comprising:
Determine the relation of the minimum value N in the address size treating that the quantity M of the expansion card that expansion equipment connects is corresponding respectively be connected each expansion card; The address size that each expansion card is corresponding is the minimum value of the figure place of configurable position in the management bus address of each device on the management bus in this expansion card;
According to the described relation determined, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach and specify the level of pin N number of able to programme of the controller in expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; The level of the pin N number of able to programme of the controller in each expansion card characterizes the value of specifying N position in the management bus address of each device on the management bus in this expansion card in configurable position.
8. method as claimed in claim 7, is characterized in that, determines the relation of the minimum value N in the address size treating that the quantity M of the expansion card that expansion equipment connects is corresponding respectively be connected each expansion card, is specially:
Determine the quantity M and 2 treating the expansion card that expansion equipment connects
nmagnitude relationship, described N for described in treat in the address size that each expansion card that expansion equipment connects is corresponding respectively minimum value.
9. method as claimed in claim 8, it is characterized in that, according to the described relation determined, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach and specify the level of pin N number of able to programme of the controller in expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card, be specially:
When treating that the quantity M of the expansion card that expansion equipment connects is less than or equal to 2
ntime, configure the level of the pin N number of able to programme of the controller in each expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card;
When treating that the quantity M of the expansion card that expansion equipment connects is greater than 2
ntime, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach not identical with the level of the pin N number of able to programme of the controller in other expansion card by the level of the pin N number of able to programme of the controller in accessed expansion card.
10. the method as described in as arbitrary in claim 7-9, is characterized in that, treats the minimum value N in the address size that each expansion card that expansion equipment connects is corresponding respectively, specifically determines in the following way:
Obtain the identification information of the controller treated in each expansion card that expansion equipment connects;
According to the identification information of the controller in the expansion card prestored and the corresponding relation of address size, determine the address size that each expansion card is corresponding respectively; And
In the address size that each expansion card determined is corresponding respectively, determine minimum value N wherein.
Treat expansion equipment in 11. 1 kinds of expanding systems as claimed in claim 1, it is characterized in that, comprising:
Transmitting element, for sending the access request message of carrying management bus address to each device on the management bus in multiple expansion card;
Receiving element, the response message that the identical device in the management bus address for carrying in receiving management bus address and described request of access returns;
Wherein, the level of the pin N number of able to programme of the controller in part or all of expansion card is treat that expansion equipment is configured according to the relation of the minimum value N in the corresponding respectively address size of the quantity M of expansion card and described multiple expansion card, and specifies the level of the pin N number of able to programme of the controller in expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; The level of the pin N number of able to programme of the controller in each expansion card characterizes the value of specifying N position in the configurable position of the management bus address of each device on the management bus in this expansion card.
12. equipment as claimed in claim 11, is characterized in that, also comprise dispensing unit, specifically for the quantity M and 2 according to expansion card
nmagnitude relationship, the level of the pin N number of able to programme of the controller in part or all of expansion card is configured.
13. equipment as claimed in claim 12, is characterized in that, described dispensing unit, are less than or equal to 2 specifically for the quantity M when expansion card
ntime, configure the level of the pin N number of able to programme of the controller in each expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; When the quantity M of expansion card is greater than 2
ntime, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach not identical with the level of the pin N number of able to programme of the controller in other expansion card by the level of the pin N number of able to programme of the controller in accessed expansion card.
14. equipment as described in claim 12 or 13, is characterized in that, described dispensing unit, also for obtaining the identification information of the controller in described multiple expansion card; According to the identification information of the controller in the expansion card prestored and the corresponding relation of address size, determine the address size that described multiple expansion card is corresponding respectively; And in the address size that the described multiple expansion cards determined are corresponding respectively, determine minimum value N wherein.
The inking device of the management bus address of device in 15. 1 kinds of expanding systems as claimed in claim 1, is characterized in that, comprising:
Determining unit, for determining the relation of the minimum value N treated in the address size of the quantity M of the expansion card that expansion equipment connects and be connected each expansion card difference correspondence; The address size that each expansion card is corresponding is the minimum value of the figure place of configurable position in the management bus address of each device on the management bus in this expansion card;
Dispensing unit, for according to the described relation determined, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach and specify the level of pin N number of able to programme of the controller in expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; The level of the pin N number of able to programme of the controller in each expansion card characterizes the value of specifying N position in the management bus address of each device on the management bus in this expansion card in configurable position.
16. devices as claimed in claim 15, is characterized in that, described determining unit, specifically for determining the quantity M and 2 treating the expansion card that expansion equipment connects
nmagnitude relationship, described N for described in treat in the address size that each expansion card that expansion equipment connects is corresponding respectively minimum value.
17. devices as claimed in claim 16, is characterized in that, described dispensing unit, treat that the quantity M of the expansion card that expansion equipment connects is less than or equal to 2 specifically for working as
ntime, configure the level of the pin N number of able to programme of the controller in each expansion card not identical with the level of the pin N number of able to programme of the controller in other expansion card; When treating that the quantity M of the expansion card that expansion equipment connects is greater than 2
ntime, be configured by the level of the pin N number of able to programme to the controller in part or all of expansion card, reach not identical with the level of the pin N number of able to programme of the controller in other expansion card by the level of the pin N number of able to programme of the controller in accessed expansion card.
18. as arbitrary in claim 15-17 as described in device, it is characterized in that, described determining unit, also for obtain treat that expansion equipment connects each expansion card in the identification information of controller; According to the identification information of the controller in the expansion card prestored and the corresponding relation of address size, determine the address size that each expansion card is corresponding respectively; And in the address size that each expansion card determined is corresponding respectively, determine minimum value N wherein.
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| CN104899177B (en) * | 2015-06-30 | 2018-03-16 | 深圳市兰丁科技有限公司 | A kind of I2C apparatus control methods and system |
| CN106294255A (en) * | 2016-08-04 | 2017-01-04 | 杭州智蚁科技有限公司 | A kind of synchronized communication method for Intelligent hardware and communication system |
| CN109787688B (en) * | 2017-11-15 | 2020-11-06 | 华为技术有限公司 | Communication device, pluggable optical module, communication system, communication method, and storage medium |
| CN113014339B (en) * | 2021-02-20 | 2022-12-09 | 山东英信计算机技术有限公司 | Quality test method, device and equipment for PCIe external plug-in card receiving channel |
| CN114756500A (en) * | 2021-07-28 | 2022-07-15 | 义明科技股份有限公司 | Master-slave system and sub-integrated circuit thereof |
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