JPH0481958A - Collecting and processing system for sense data - Google Patents

Abstract

PURPOSE:To decrease the number of times of issue of an input/output instruction issued by a processor module, and to improve the operation efficiency of the system by constituting the processor module so that store area information of sense data of a device is set to the issued input/output instruction. CONSTITUTION:A processor module 1 is constituted so that store area information of sense data of a device 2 is set to an issued input/output instruction. In such a state, at the time of detecting abnormality of the device 2, an adaptor 3 collects sense data of the device 2 by issuing a sense command to the device 2, and also, executes a processing so as to transfer its collected sense data to the processor module 1 in accordance with an instruction of the store area information informed by the input/output instruction from the processor module 1. In such a way, the number of times of issue of the input/output instruction issued by the processor module 1 can be decreased, and also, the operation efficiency of the system can be enhanced.

Description

[Detailed Description of the Invention] [Summary] Regarding a sense data collection processing method in a data processing system composed of a processor module, an adapter, and a device, it is possible to reduce the number of input/output instructions issued by the processor module, and With the aim of increasing system operating efficiency, the processor module is configured to set storage area information for device sense data in the input/output commands it issues, and the adapter detects device abnormalities. At the same time, by issuing a sense command to the device, the sense data of the device is collected, and the collected sense data is transferred to the processor according to the instructions of the storage area information notified by the input/output command from the processor module. Configure it to forward to the module.

[Industrial application field]

The present invention relates to a sense data collection processing method in a data processing system composed of a processor module, an adapter, and a device, and in particular, it is possible to reduce the number of input/output commands issued by the processor module, and improve system operating efficiency. The present invention relates to a sense data collection and processing method that makes it possible to improve the sense data.

In a data processing system composed of a processor module, an adapter, and a device, when an abnormality occurs in the device, the processor module collects sense data, which is detailed information about the contents of the abnormality, in order to perform recovery processing. Execute the following processing. It is desirable to have a configuration that allows this sense data collection process to be executed without reducing the operating efficiency of the system.

[Conventional technology]

In a data processing system, multiple processor modules and multiple adapters are connected through a bus, and multiple devices are connected under the adapter.
Normally, as shown in the operation sequence shown in FIG. 7(a), a processor module (PM in the figure) issues 10 instructions to an adapter (ADP in the figure) to control a device (DVC in the figure). Issue and receive this ■10 command,
The adapter uses DMA to fetch the necessary parameter information from the processor module and
The I10 instruction is executed by issuing the specified command to the device specified by the 0 instruction. Then, when the adapter finishes issuing all commands to the device and finishes executing the I10 instruction, it uses DMA to store the I10 instruction completion information in the processor module, and then uses an interrupt to execute the I10 instruction completion information. The processing is performed so as to notify the processor module.

When performing such processing, if an abnormal condition occurs during I10 operation, the device has sense data internally prepared to report the contents to the processor module, so the adapter , performs the operation shown in FIG. 7(b) in order to transfer this sense data to the processor module. That is, when the adapter learns that sense data is pending according to the device status information, the adapter performs the following actions to prevent loss of sense data:
It responds immediately to startup requests from other processor modules to that device, and also waits for the startup of other devices under the adapter to check the processor module in the I10 instruction using an interrupt. Process to notify the occurrence. Here, the reason why commands other than the sense command are not notified to the device to which the sense data is attached is performed is because the sense data will be lost if a command other than the sense command is notified. Further, in the case of a multi-boat device connected to a plurality of adapters, a configuration is adopted in which boats other than the boat moored with sense data respond with a visit.

Upon receiving the check occurrence interrupt notification, the processor module issues an I10 instruction to the adapter to collect device sense data, and receives the I10 instruction for collecting this sense data. Then, the adapter reads the sense data stored in the device and transfers it to the processor module using DMA.

Then, when this transfer process is finished, the adapter
After storing the end information of the 0 instruction in the processor module, processing is performed to notify the end of the I10 instruction to the processor module by an interrupt. Here, the adapter's response to the issuance of the I10 instruction from another processor module continues until the issuing processor module issues the sense data I10 instruction.

In this way, the processor module was processing the device's sense data to be collected.

[Problem to be solved by the invention]

However, in such conventional technology, the processor module needs to issue an I10 instruction for collecting sense data in addition to the original I10 instruction, and
There was a problem in that unnecessary operations had to be performed, such as having to accept an interrupt called a check occurrence notification.

Due to this operation, the adapter's visual response to the I10 instruction issued by another processor module becomes long, resulting in a problem in that the operating efficiency of the system decreases. In other words, when the adapter detects an abnormality in the device, it continues to make a visual response to other processor modules until the I10 instruction for collecting sense data is issued. As the time for this busy response becomes longer, it becomes difficult to execute other I10 commands, which reduces the efficiency of use of the adapter. During this time, other processor modules cannot use the devices under that adapter because all I10 instructions issued to that adapter result in a bus response. This will reduce the usage efficiency. Furthermore, the device also does not perform I10 operations during this time, resulting in reduced usage efficiency.

The present invention has been made in view of the above circumstances, and it is possible to reduce the number of input/output commands issued by the processor module in a data processing system composed of a processor module, an adapter, and a device, and to improve system operation. The purpose is to provide a new sense data collection and processing method that increases efficiency.

[Means to solve the problem]

FIG. 1 is a diagram showing the basic configuration of the present invention.

In the figure, 1 is a processor module that executes predetermined data processing, 2 is a device serving as an input/output device, and 3 is an adapter that controls the device 2 according to instructions from the processor module 1.

A plurality of these processor modules 1, devices 2, and adapters 3 may be provided, and the plurality of processor modules 1 and the plurality of adapters 3 are connected through a bus, and the plurality of devices 2 are connected under the adapter 3. configuration may be adopted.

0 is an input/output command issuing unit provided in the processor module 1, which issues input/output commands for controlling the device 2 to the adapter 3; 20 is a sense data management unit provided in the device 2; 30 is a command issuing unit included in the adapter 3 that manages detailed information of the abnormal state when an abnormal state occurs, and 30 is a command issuing unit provided in the adapter 3, which sends commands to the adapter 2 in response to an input/output command issued by the processor module 1. The one that issues the command, 31 is the adapter 3
32 is a sense command issuing unit provided in the adapter 3, which detects a notification of the occurrence of an abnormal state notified by the device 2, and 32 is a sense command issuing unit provided in the adapter 3. When detecting an occurrence,
A sense command issuing unit and data transfer unit for collecting sense data from the adapter 3, which transfers sense data from the device 2 transferred in response to a sense command issued by the sense command issuing unit 32 to the processor module. It is to be transferred to l.

[Effect]

In the present invention, when issuing an input/output command, the input/output command issuing unit 10 of the processor module 1 sends parameters for device 20 control processing (parameters in the figure) to the adapter 3 as parameters of the input/output command. In addition to a), information related to the sense data storage SJI area is notified as a new parameter (parameter b in the figure). on the other hand,
When sense data is moored to the sense data management section 20 due to an abnormal state occurring in the device 2, the abnormality detection section 31 of the adapter 3 detects the mooring of this sense data according to the status information from the device 2. Become.

When the abnormality detection unit 31 detects that the sense data is anchored, the sense command issuing unit 32 immediately issues a sense command to the device 2. In response to the issuance of this sense command, sense data is transferred from the device 2, so the sense data transfer unit 33 collects this sent sense data and transfers the collected sense data from the processor module 1. Processing is performed so that the data is stored in the storage area N notified by the input/output command.

In this way, as shown in the operation sequence shown in FIG. 2, when the adapter 3 of the present invention detects the occurrence of a check in the device 2, it immediately issues a sense command to the device 2 to collect sense data. At the same time, the collected sense data is stored in the memory area of the processor module 1 specified by the parameter of the I10 instruction. When the adapter 3 finishes storing the sense data, it stores the completion information of the I10 instruction in the processor module 1, and then stores the I10 instruction completion information in the processor module 1 by an interrupt.
Notifies the processor module 1 of the end of the instruction.
In accordance with this interrupt notification, the processor module 1 learns the occurrence information of the abnormal state of the device 2 from the termination status and immediately reads the sense data stored in the designated storage area.

As is clear from a comparison between the operation sequence shown in FIG. 2 and the operation sequence shown in FIG. Sense data can be collected. Also, by reducing the number of times the 10 instructions are issued from two to one, the bus response time displayed by the adapter 3 is shortened, which improves the operating efficiency of the processor module 1, device 2, and adapter 3. It becomes possible to do this.

〔Example〕

Hereinafter, the present invention will be explained in detail according to examples.

FIG. 3 illustrates the system configuration of a data processing system suitable for applying the present invention. As shown in this figure,
A data processing system suitable for applying the present invention has, for example, a loosely coupled multiprocessor configuration in order to realize 24-hour operation, and all system component devices are duplicated. It will be composed of That is, a plurality of processor modules 40 each having a CPU and a main memory operate as an independent computer, a plurality of shared memories 41 provided for exchanging data information between the processor modules 40, and the processor modules 40. An SS bus 42 with a redundant configuration that connects the shared memory 41 and the S
A bus handler 43 that centrally controls the S bus 42 and a DAS
An adapter 46 with a duplex configuration provided for connecting a device 44 (including a line switch 45 etc.) such as D, an I10 bus 47 with a duplex configuration connecting the processor module 40 and the adapter 46, and an I10 bus 47. The bus handler is configured to have four centrally controlled bus handlers.

FIG. 4 shows a detailed system configuration of this processor module 40 and adapter 46.

In the figure, 400 is a CP included in the processor module 40.
U, 401 is a local storage unit provided in the processor module 40, 402 is a bus control circuit provided in the processor module 40, 460 is a CPtJ provided in the adapter 46, 461 is a data buffer provided in the adapter 46, and 462 is a bus control provided in the adapter 46. circuit,
463 is an input/output bus control circuit included in the adapter 46.

The processor module 40 has an I
When issuing 10 instructions, in addition to information such as the instruction code, source processor number, receiving destination adapter number, and control destination device number, the local storage unit 401
In this invention, the address information of the parameter storage area of the I10 instruction set in The address information of the storage area and the sense data length information are added. Here, the device control command data length, device control command storage address, and I10 command end information storage address in FIG. 5 are parameter storage area information in the local storage unit 401 to be transmitted, as in the conventional case.

Next, according to the time chart of FIG. 6, the sense data collection processing method of the present invention configured as described above will be explained in detail. Note that in the figure, the processing on the left side of the broken line indicates the processing executed by the software of the processor module 40, and the processing on the right side indicates the processing executed by the firmware of the adapter 46.

The processor module 40 connects the adapter 46 to
Issues an I10 instruction to control device 44 via bus control circuit 402. I10 issued at this time
As described above, the command includes the address information of the parameter storage area of the local storage unit 401, which includes the address information of the sense data storage area and the sense data length information.

Upon receiving the I10 command from the processor module 40, the adapter 46 stores the sense data from the parameters of the local storage unit 401 specified by the address information sent with the I10 command, as shown in phase 1 of FIG. The address information and sense data length information of the area are fetched into the data buffer 461, and the device control instruction for the specified data division is read from the device control instruction storage address and fetched into the data buffer 461. According to the given device control command, a process is executed to issue a command to the device 44 designated as the controlled device.

When the adapter 46 finishes executing the device control instruction because no abnormal state occurs in the device 44, the adapter 46 fetches it into the data buffer 461 and stores the I10 instruction termination information in the storage area specified by the I10 instruction termination information storage address. do. When this end information is stored, the end of the I10 instruction is reported by interrupting the processor module 40 that issued the I10 instruction. Upon receiving this completion report, the processor module 40
Normal completion is confirmed by reading the completion information of the I10 instruction stored in the I10 instruction completion information storage area of the local storage unit 401 and checking the completion status.

On the other hand, when an abnormal state occurs in the device 44 during execution of the I10 instruction, the device 44 prepares sense data internally and notifies the adapter 46 that the sense data is being held in accordance with the device status information. In this way, when detecting the occurrence of an abnormality in the device 44, the adapter 46 stops executing the I10 instruction as shown in phase 2 of FIG. By issuing a sense command to the device 44, the sense data moored by the device 44 is taken into the data buffer 461, and
As shown in phase 4, the collected sense data is stored in the storage area of the local storage unit 401 specified by the sense data storage address of the fetcher according to the specified data length, and the I10 instruction completion information of the fetcher is stored. After storing the completion information of the I10 instruction that indicates the occurrence of an abnormal state of the device and the presence of sense data in the storage area of the local storage unit 401 specified by the storage address, the information is sent to the processor module 40 that issued the I10 instruction. , I10 due to interrupt
Reports the end of the command.

Upon receiving this completion report, the processor module 40
is stored in the I10 instruction completion information storage area of the local storage unit 401! By reading the completion information of 10 instructions and checking the completion status, 110
It is possible to know the occurrence of a device error during instruction execution and the existence of sense data. And the processor module 40
reads the sense data stored in the sense stator storage area of the local storage unit 401 (thereby identifying detailed information on the abnormality that has occurred in the device 44, and starting to execute recovery processing if necessary). become.

In this manner, the processor module 40 collects sense data associated with the device 44.

〔Effect of the invention〕

As explained above, according to the present invention, in a data processing system composed of a processor module, an adapter, and a device, when a device abnormality occurs, the adapter no longer needs to notify the processor module of an interrupt. , the processor module is I
There is no need to issue 10 instructions (now, with this,
This allows the processor module to quickly collect sense data and reduces the adapter's display response time, increasing the operating efficiency of the processor module, adapter, and device.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the principle configuration of the present invention, Fig. 2 is an explanatory diagram of the operation sequence of the present invention, Fig. 3 is an explanatory diagram of a data processing system suitable for applying the present invention, and Fig. 4 is a processor module. and a detailed system configuration diagram of the adapter, FIG. 5 is an explanatory diagram of the storage area information of the local storage unit set in the I10 instruction, FIG. 6 is a time chart processed by the present invention, and FIG. 7 is an explanatory diagram of the prior art. It is. In the figure, 1 is a processor module, 2 is a device, 3 is an adapter, 10 is an input/output instruction issuing section, 20 is a sense data management section, 30 is a command issuing section, 31 is an abnormality detection section,
32 is a sense command issuing section, and 33 is a sense data transfer section. Fuj Otomei's masterpiece - 12 drawings of a 7-inch bait hole

Claims (1)

[Claims] Consisting of a processor module (1), an adapter (3), and a device (2), the adapter (3) controls the device (2) according to input/output instructions issued by the processor module (1). In a data processing system that executes control processing, a processor module (1) is configured to set sense data storage area information of a device (2) in an input/output command to be issued, and an adapter (3) is configured to: When detecting an abnormality in the device (2), by issuing a sense command to the device (2), sense data of the device (2) is collected, and also by input/output commands from the processor module (1). A sense data collection processing method is characterized in that the sense data to be collected is transferred to a processor module (1) according to the instructions of the notified storage area information.