JP2752760B2 - Power control method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a power control method, and more particularly to a serial bus interface power control method.

Prior art: A service processor used in an information processing device and the like;
In a power supply system including a power supply control device and a plurality of power supplies, there is a method of realizing power supply control between the power supply control device and the plurality of power supplies by using a serial bus interface, such as turning on / off a power supply and performing abnormality processing. .

In such a serial bus interface power control method, when the power control device receives a power-on instruction from the service processor, the power control device transmits a power-on instruction to a plurality of power supplies, and each power supply transmits the power-on instruction. Upon receipt, the storage unit including the failure information inside the failure detection latch circuit and the like is initialized, and then a stabilized voltage is output.

Also, in this type of serial bus interface power supply control method, when an abnormality occurs in any one of a plurality of power supplies, the power supply control apparatus transmits the power supply failure information from the power supply in which the abnormality has occurred during the power supply control apparatus abnormality processing. A serial bus communication procedure is defined to collect the failure information and report the collected failure information to the service processor.

In the conventional serial bus interface power control method described above, when the power control device sometimes receives a power-on instruction from the service processor immediately before collecting power failure information, the power control device issues a power-on instruction to the power source. Send. When the power supply performs a power-on operation in response to this,
The fault information is erased by initialization before the collection is performed, so that the fault information is not reported to the service processor, so that there is a drawback that abnormal processing cannot be performed.

SUMMARY OF THE INVENTION Therefore, the present invention has been made to solve such disadvantages of the related art, and the purpose thereof is to
An object of the present invention is to provide a power supply control method capable of always reporting power supply failure information to a service processor.

According to the present invention, according to the present invention, a service processor that issues a power-on instruction, a disconnection instruction, an abnormality process, and the like, a power supply control device that performs power supply control in response to the instruction of the service processor, and a power supply control device that is controlled by the power supply control device Power supply system in a power supply system including a plurality of power supplies, each of the power supply, in response to an interrupt permission command from the power supply control device generated in response to the occurrence of a failure of its own device, Means for generating an interrupt command; and means for generating fault information in response to a request command from the power supply control device, wherein the power supply control device transmits the interrupt permission command to the power supply at one fixed period. Generating means; and a power-on instruction from the service processor in response to receiving the interrupt command generated from at least one of the power supplies. Means for controlling the hold and generating an interrupt disable command; means for generating the request command in response to receiving the interrupt command; and reporting the fault information to the service processor in response to receiving the fault information. And a power-on control method, wherein the power-on instruction is canceled after the report is completed.

Embodiment Next, an embodiment of the present invention will be described with reference to the drawings.

In the figure, a service processor 1 includes a power control device 2
And a control signal line and a parallel data bus, and issues a power-on instruction of the power supply system, a power-off instruction, and collection of failure information at the time of abnormality processing.

The power supply control device 2 is daisy-chain connected to the plurality of power supplies 3 to 6 by a serial bus, and in accordance with an instruction from the service processor 1, a power-on instruction, a power-off instruction, and a failure information from an abnormal power supply to the plural power supplies. And so on.

Further, different physical address data are set in advance in the power supplies 3 to 6, respectively. The power supply control device 2 can control a specific power supply by transmitting the command including the physical address data in the command. .

Next, the communication procedure of the power supply control according to the present invention will be described with reference to the time chart in FIG. 4 shows a communication procedure when a failure occurs in the power supply 4. Power control device 2
Transmits the interrupt enable command 7 to the power supplies 3 to 6 at regular intervals by the interrupt enable command generating means (step 10).
1).

The interrupt permission command 7 from the power supply control device 2
Received from the power supply 4, the power supply 4 sends an interrupt command 8 indicating that a change in the power supply state such as the occurrence of a failure has occurred.
Is generated and transmitted by the interrupt command generating means (procedure 102). Note that the interrupt command 8 does not include the physical address data of the power supply.

When the power supply control device 2 receives the interrupt command 8 from the power supply 4, the interrupt disable command generating means generates the interrupt disable command 9 by the interrupt disable command generation means in order to identify the power supply that has transmitted the interrupt command from any of the power supplies 3 to 6. 6 (step 103). Thereafter, the power control device 2 sends the status data request command 10 to the power
Is transmitted including the physical address data (step 104).

Further, at the same time as the transmission of the interrupt prohibition command 9, the power supply control device 2 transmits the service processor 1
Set to hold the instruction from. In this state, the power-on instruction 26 from the service processor 1 is suspended.

When the power supply 3 receives the status data request command 10, it transmits to the power supply control device 2 status data 11 indicating the on / off completion status, the normal / abnormal status, and the presence / absence of status change (step 105). Here, since the power supply 3 is in a state where there is no state change, the power supply control device 2 transmits the state data request command 14 to the power supply 4 in which the next physical address data is set (step 106).

Power supply 4 has status data indicating abnormal status and status change
15 is transmitted to the power control device 2 (procedure 107). The power supply control device 2 transmits a detailed information request command 16 to the power supply 4 by the request command generation means from the information indicating the abnormal state and the state change in the state data 15 (step 108).

When the power supply 4 receives the detailed information request command 16, it transmits the detailed information 17 on the power supply abnormality to the power supply control device 2 (step 109). Upon receiving the detailed information 17, the power control device 2 reports the detailed information 18 to the service processor 1 (procedure 200).

Next, the power supply control device 2 transmits an interrupt permission command 19 to detect the presence or absence of a change in the state of another power supply (procedure).
201). When there is a state change in any of the other power supplies, the power supply control device 2 receives the above-described interrupt command 8 (procedure 102).

Thereafter, the above steps 104 to 201 are repeated to complete the report of the information from all the power supplies in which the abnormality has occurred to the service processor 1 and release the suspension.

Next, the power supply control device 2 transmits the interrupt prohibition command 20 to all the power supplies by the interrupt prohibition command generation means, and then sequentially transmits the power-on commands 21 to 24 to the power supplies 3 to 6. Then, after transmitting the all-power-on command, the power supply control device 2 transmits the interrupt permission command 25 to all the power supplies. As a result, the occurrence of a failure can be monitored periodically.

Note that the above-mentioned units are not particularly shown since a known technique and configuration can be used.

Effects of the Invention As described above, according to the present invention, an interrupt enable command is periodically generated for all power supplies, an interrupt command is generated from a faulty power supply in response to the interrupt enable command, and the interrupt command is generated. In response to the reception, the power-on instruction from the service processor is controlled to be suspended, interrupt commands from other power sources are prohibited, and the fault information of the faulty power source is collected and reported to the service processor. This makes it possible to prevent the initialization of unreported failure information even if the power-on instruction is issued at any timing from the server.

[Brief description of the drawings]

 FIG. 5 is a diagram showing an operation procedure of the embodiment of the present invention. Description of Signs of Main Parts 1... Service Processor 2... Power Supply Controller 3 to 6.

Claims (1)

(57) [Claims] 1. A service processor for executing a power-on instruction, a disconnection instruction, an abnormality process, etc., a power control device for performing power control in response to an instruction from the service processor, and a plurality of power supplies controlled by the power control device. A power supply control method in a power supply system including: generating an interrupt command in response to an interrupt permission command from the power supply control device generated in response to the occurrence of a failure in the power supply device. Means for generating fault information in response to a request command from the power supply control device, wherein the power supply control device generates the interrupt permission command for the power supply at one fixed period. Holding control of a power-on instruction from the service processor in response to receiving the interrupt command generated from at least one of the power supplies. Means for generating an interrupt disable command, means for generating the request command in response to receiving the interrupt command, and means for reporting this fault information to the service processor in response to receiving the fault information. Wherein the power-on instruction is canceled after the report is completed.