JPS58195915A - Error processing system of channel device - Google Patents

Error processing system of channel device

Info

Publication number
JPS58195915A
JPS58195915A JP57078572A JP7857282A JPS58195915A JP S58195915 A JPS58195915 A JP S58195915A JP 57078572 A JP57078572 A JP 57078572A JP 7857282 A JP7857282 A JP 7857282A JP S58195915 A JPS58195915 A JP S58195915A
Authority
JP
Japan
Prior art keywords
channel device
input
error
logging
processing unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP57078572A
Other languages
Japanese (ja)
Other versions
JPS6220584B2 (en
Inventor
Seiichi Shimizu
誠一 清水
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP57078572A priority Critical patent/JPS58195915A/en
Publication of JPS58195915A publication Critical patent/JPS58195915A/en
Publication of JPS6220584B2 publication Critical patent/JPS6220584B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0706—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment
    • G06F11/0745—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment in an input/output transactions management context
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Debugging And Monitoring (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)

Abstract

PURPOSE:To lighten the burden of a central processing unit and a service processor, in case when an error is detected, by constituting so that the service processor executes logging of a state of a channel device. CONSTITUTION:When a service processor 3 receives a logging request (a) from a channel device 2, a logging processing part 31 executes logging. Subsequently, an analyzing part 32 analyzes a data and decides a kind of its error. In case of a machine check interruption, it is informed to a CPU1 from the processor 3, but in other case, an interruption processing part 22 of the channel device 2 is operated so that an interruption request is generated to a CPU2. The channel device 2 generates an interruption request to the CPU1 after ending the logging processing to the processor 3, and waits for an instruction for reissue of an input/output instruction from the CPU1. On the other hand, the CPU1 issues an input/output instruction for ending the error processing in accordance with a kind of an input/output instruction which is being processed, while it is waiting for information of a normal end from the channel device 2 which issues the input/output instruction.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は、サービスプロセッサを有する情報処理システ
ムにおけるチャネル装置のエラー処理方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an error processing method for a channel device in an information processing system having a service processor.

〔発明の従来技術〕[Prior art to the invention]

従来より、中央処理装置から発信した入出力命令をチャ
ネル装置が処理中に、チャネル装置においてエラーが検
出された場合（入出力装置のエラーとチャネル装置自身
のエラーを含む）、中央処理装置がそのエラーに応して
サービスプロセッサにロギングの要求を出し、また号−
ビスプロセソサはロギングした内容を解析してそのとき
の入出力命令の種類に応したエラー処理をしていた。Conventionally, when an error is detected in a channel device (including an error in the input/output device and an error in the channel device itself) while the channel device is processing an input/output command issued from the central processing unit, the central processing unit Issues logging requests to the service processor in response to errors and issues
The bisprocessor analyzed the logged content and handled errors according to the type of input/output command at that time.

従って、中央処理装置及びサービスプロセッサの負担が
大きい欠点があった。Therefore, there is a drawback that the burden on the central processing unit and service processor is large.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、上記のようなエラー検出時における。 An object of the present invention is to detect an error as described above.

中央処理装置及びサービスプロセッサの負担を軽減する
ことにある。The objective is to reduce the burden on the central processing unit and service processor.

〔発明の実施例〕[Embodiments of the invention]

図は本発明の一実施例を示す概略ブロック図であり、ｌ
は中央処理装置、２はチャネル装置、３はサービスプロ
セッサ、４は入出力装置、５は主記憶装置である。また
、■は入出力命令発信部。The figure is a schematic block diagram showing one embodiment of the present invention.
2 is a central processing unit, 2 is a channel device, 3 is a service processor, 4 is an input/output device, and 5 is a main storage device. Also, ■ is an input/output command transmitter.

１２はエラー処理部であり、　２１はエラー検出部、２
２は割込み処理部であり、さらに３１はロギング処理部
、３２は解析部である。12 is an error processing section, 21 is an error detection section, 2
2 is an interrupt processing section, 31 is a logging processing section, and 32 is an analysis section.

入出力命令発信部１■から発信される入出力命令には、
以下の如き種類がある。The input/output commands sent from the input/output command sending unit 1■ include:
There are the following types.

■テスト・チャネル（ＴＣＨ） ■スター）１０　　　（５１０） ■ＳｔＯファスト・リリース（Ｓ［ＯＦ）■ボルト・デ
バイス（ＨＤ　Ｖ） ■ホルト１０　　　　　（ＨＩＯ） ■テスト１０　　　　　（Ｔ　Ｉ　Ｏ）■クリア１０　
　　　　（ＣＬＲ［Ｏ）’■入入出側割み なお特に断らない限り「入出力命令」には、狭義の入出
力命令（上記■〜■）の他に入出力割込み（■）も含む
ものとする。■Test Channel (TCH) ■Star) 10 (510) ■StO Fast Release (S[OF) ■Volt Device (HD V) ■Holt 10 (HIO) ■Test 10 (TI O) ■Clear 10
(CLR[O)'■ Input/output side interrupt Unless otherwise specified, "input/output commands" include input/output interrupts (■) in addition to narrowly defined input/output commands (■ to ■) above.

また入出力命令を発信するに際しては。Also, when issuing input/output commands.

＋１１チヤネル装置の機番。+11 channel device machine number.

（２）入出力命令／割込みの種類。(2) Type of input/output command/interrupt.

（３）中央処理装置のモード。(3) Central processing unit mode.

（４）入出力装置の機番２ を合せて発（ｄする。(4) Model number 2 of input/output device utter (d) together.

一般にチャネル装置で入出力命令の実行中にエラーを検
出した場合には、その入出力命令の種類に応して表１の
如きエラー処理が必要とされる。Generally, when a channel device detects an error while executing an input/output command, error handling as shown in Table 1 is required depending on the type of input/output command.

表１においてＣ８Ｗ格納とは、チャネル・ステータス・
ワード（Ｃ３Ｗ）の−分または全部を主記憶装置５の所
定の７ドレスに格納することを意味する。In Table 1, C8W storage means channel status,
This means that - or all of the words (C3W) are stored in seven predetermined addresses of the main memory 5.

本発明におけるチャネル装置２は、入出力命令の実行中
を含めて、エラーを検出したときにはサービスプロセッ
サ３に対してチャネル装置内部状態のロギング及びロギ
ング・データの解析を依頼する。このロギング要求信号
（ａ）は中央処理装置ｌにも伝えられる。When the channel device 2 of the present invention detects an error, including during the execution of an input/output command, it requests the service processor 3 to log the internal state of the channel device and analyze the logging data. This logging request signal (a) is also transmitted to the central processing unit l.

表１ 本発明におけるサービスプロセッサ３は、チャネル装置
２からのロギング要求ａがあると、ロギング処理部３１
がロギングを行い、ロギング・データを解析部３２が解
析してそのエラーの種類が、チャネル・コントロール・
チェックか、インターフェイス・コントロール・チェッ
クか、それともマシン・チェック割込みとすべきものか
を１判定する。Table 1 When the service processor 3 in the present invention receives a logging request a from the channel device 2, the logging processing unit 31
performs logging, and the analysis unit 32 analyzes the logging data to determine the type of error.
1 determines whether the interrupt should be a check, an interface control check, or a machine check interrupt.

マシン・チェック割込みの場合には号−ビスプロセソ＋
３から中央処理装置ｌへ通知するが、それ以外の場合に
は中央処理装置２に対して、チャネル・コントロール・
チェック等に起因する割込み要求を発生させるよう、チ
ャネル装置２の割込み処理部２２を動作させる。　　　
・ チャネル装置２はサービスプロセッサ３へのロギング処
理の終了後、チャネル・コントロール・チェック等に起
因する割込み要求を中央処理装置１に対して発生し、中
央処理装置Ｉからの入出力命令の再発行、あるいは新に
発行さる入出力命令等の指示を待つ。In the case of a machine check interrupt, the number −bisprocesso+
3 to the central processing unit l; otherwise, the central processing unit 2 is notified of the channel control
The interrupt processing unit 22 of the channel device 2 is operated to generate an interrupt request due to a check or the like.
- After the channel device 2 finishes logging processing to the service processor 3, it issues an interrupt request to the central processing unit 1 due to a channel control check, etc., and reissues the input/output command from the central processing unit I. , or wait for instructions such as newly issued input/output commands.

一方２本発明における中央処理装置ｌは、入出力命令を
発行したチャネル装置２からの正常終了通知を待つ間に
、チャネル装置２からサービスプロセッサ３へのロギン
グ要求を検知すると、エラー処理部１２がそのロギング
終了を待って、現在処理中の入出力命令の種類に応じて
１表２に示すようなエラー処理終結用の入出力命令を発
行する。On the other hand, when the central processing unit 1 in the present invention detects a logging request from the channel device 2 to the service processor 3 while waiting for a normal completion notification from the channel device 2 that issued the input/output command, the error processing unit 12 After waiting for the completion of the logging, an input/output command for terminating error processing as shown in Table 1 is issued depending on the type of input/output command currently being processed.

なおこの時の入出力命令の発行に際しては、上記＋１１
〜（４）の情報の内（２）のみが変更され、他は最初の
ものと同じものを用いる。In addition, when issuing input/output commands at this time, please refer to +11 above.
Of the information in ~(4), only (2) is changed, and the others are the same as the first one.

／ ／ チャネル装置２は、この中央処理装置１からのエラー処
理終結用の入出力命令を実行することにより、適切なエ
ラー終結処理を行うことができる。/ / The channel device 2 can perform appropriate error termination processing by executing the input/output instruction for error processing termination from the central processing unit 1.

〔発明の効果〕〔Effect of the invention〕

以上のように９本発明によればチャネル装置でのエラー
検出時に、チャネル装置が自らサービスプロセッサに対
してロギング要求をすることにより、従来のように一旦
中央処理装置に通知し、中央処理装置がサービスプロセ
ッサにロギングを依頼するのに比べて、高速に且つ簡単
にロギング処理に入ることができる。As described above, according to the present invention, when an error is detected in a channel device, the channel device itself makes a logging request to the service processor, thereby once notifying the central processing unit as in the conventional case, and the central processing unit Logging processing can be started more quickly and easily than when requesting logging to the service processor.

また、ロギング・データの解析結果に応じたエラー終結
処理をサービスプロセッサが指示していた従来例に比べ
て、最初に入出力命令を発行した中央処理装置において
、該最初の入出力命令の種類に応じて終結処理を決定し
、かつ上記ｉｌｌ、　＋３１゜及び（４）の情報をその
まま利用するので、効率的な処理が可能になる。In addition, compared to the conventional example in which the service processor instructs error termination processing according to the analysis results of logging data, the central processing unit that first issued the input/output instruction Since the final processing is determined accordingly and the information of ill, +31° and (4) is used as is, efficient processing is possible.

さらに、チャネル装置においてエラーの検出もしくはサ
ービスプロセッサへのロギング依頼すらができないよう
なエラーを生じた場合には、中央処理装置が時間監視を
行ってそれを検出するが。Furthermore, if an error occurs in the channel device that makes it impossible to detect an error or even request logging to the service processor, the central processing unit monitors time to detect it.

その場合には中央処理装置がサービスプロセンサに対し
てチャネル装置のロギング要求を発行し。In that case, the central processing unit issues a channel device logging request to the service processor.

それを受けてサービスプロセッサがロギング及びロギン
グ・データの解析、さらにチャネル・コントロール・チ
ェック等に起因する割込み要求を発生させるようにチャ
ネル装置を動作させる。その後、中央処理装置がチャネ
ル装置に対してエラー終結用の入出力命令を発行すれば
よい。In response, the service processor operates the channel device to generate interrupt requests due to logging and analysis of the logging data, as well as channel control checks and the like. Thereafter, the central processing unit may issue an I/O command to the channel device to terminate the error.

【図面の簡単な説明】[Brief explanation of drawings]

図は本発明の一実施例を示す概略ブロック図であり、■
は中央処理装置、２はチャネル装置、３はサービスプロ
セッサ、４は入出力装置、５は主記憶装置である。また
、１１は入出力命令発信部。 １２はエラー処理部であり、２１はエラー検出部、２２
は割込み処理部であり、さ献に３１はロギング処理部、
３２は解析部である。The figure is a schematic block diagram showing one embodiment of the present invention.
2 is a central processing unit, 2 is a channel device, 3 is a service processor, 4 is an input/output device, and 5 is a main storage device. Further, 11 is an input/output command transmitting section. 12 is an error processing section, 21 is an error detection section, 22
31 is an interrupt processing section, and 31 is a logging processing section.
32 is an analysis section.

Claims (1)

【特許請求の範囲】 中央処理装置、主記憶装置、サービスプロセッサ、及び
チャネル装置を含み、中央処理装置からの入出力命令を
チャネル装置が実行中にチャネル装置においてエラーを
検出した場合に、該チャネル装置の状態をサービスプロ
セッサがロギングし。 また主記憶装置にチャネル装置の所定の情報を格納し、
中央処理装置に対して上記入出力命令の終結を通知する
情報処理システムにおいて。 前記中央処理装置は入出力命令の発信後、且つ終了前に
、チャネル装置からエラー検出をした旨の通知を受信し
た場合、チャネル装置からサービスプロセッサへのロギ
ングの終了後に、前記入出力命令の種類に応じた終了処
理指示をチャネル装置に対して発ｆｄすることを特徴と
するチャネル装置のエラー処理方式。[Scope of Claims] The channel device includes a central processing unit, a main storage device, a service processor, and a channel device, and when an error is detected in the channel device while the channel device is executing an input/output instruction from the central processing unit, the channel device The service processor logs the device status. In addition, predetermined information of the channel device is stored in the main memory,
In an information processing system that notifies a central processing unit of the termination of the input/output command. If the central processing unit receives a notification from the channel device that an error has been detected after the input/output command is issued but before the input/output command is completed, the central processing unit determines the type of the input/output command after completing logging from the channel device to the service processor. An error handling method for a channel device, characterized in that a termination processing instruction is issued to the channel device according to fd.
JP57078572A 1982-05-11 1982-05-11 Error processing system of channel device Granted JPS58195915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57078572A JPS58195915A (en) 1982-05-11 1982-05-11 Error processing system of channel device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57078572A JPS58195915A (en) 1982-05-11 1982-05-11 Error processing system of channel device

Publications (2)

Publication Number Publication Date
JPS58195915A true JPS58195915A (en) 1983-11-15
JPS6220584B2 JPS6220584B2 (en) 1987-05-07

Family

ID=13665612

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57078572A Granted JPS58195915A (en) 1982-05-11 1982-05-11 Error processing system of channel device

Country Status (1)

Country Link
JP (1) JPS58195915A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0397471A2 (en) * 1989-05-09 1990-11-14 Fujitsu Limited Initialization system amd methods for input/output processing units
US5737248A (en) * 1994-10-05 1998-04-07 Semiconductor Energy Laboratory Co., Ltd. Device for altering the output conditions of an information processing device according to input states at the user's keyboard
US7473017B2 (en) 2004-03-30 2009-01-06 Honda Motor Co., Ltd. Vehicle provided with switch device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5534714A (en) * 1978-08-31 1980-03-11 Fujitsu Ltd Channel logout processing system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5534714A (en) * 1978-08-31 1980-03-11 Fujitsu Ltd Channel logout processing system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0397471A2 (en) * 1989-05-09 1990-11-14 Fujitsu Limited Initialization system amd methods for input/output processing units
US5438675A (en) * 1989-05-09 1995-08-01 Fujitsu Limited Initialization system for input/output processing units
US5737248A (en) * 1994-10-05 1998-04-07 Semiconductor Energy Laboratory Co., Ltd. Device for altering the output conditions of an information processing device according to input states at the user's keyboard
US7473017B2 (en) 2004-03-30 2009-01-06 Honda Motor Co., Ltd. Vehicle provided with switch device

Also Published As

Publication number Publication date
JPS6220584B2 (en) 1987-05-07

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