JPH04242462A - Channel system - Google Patents

Abstract

PURPOSE:To prevent an erroneous setting when a transfer system is witched to another transfer system. CONSTITUTION:When a peripheral controller 10 is initialized, an initialization circuit 11 of the controller 10 sends the transfer system information to a common interface 6 via an IO control part 12. A control part 5 of a channel controller 1 receives the transfer system information from the interface 6 and transfers it to a transfer system discriminating circuit 3. The circuit 3 decides a transfer system from the received transfer system information and sets a transfer mode register 4. Then the part 5 selects a transfer system the through the register 4.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a channel system, and more particularly to a channel system equipped with a channel control device that can perform data transfer for a plurality of transfer methods by changing the transfer mode depending on the transfer method.

0002

[Prior art] Transfer methods include 2TRIP (trip)
, 4TRIP, DSF (device support
facility). Furthermore, even within the DSF system, there are many different transfer rates. Conventionally, this type of channel system does not have separate dedicated channel devices for such transport methods, but an IO (Input
Output) control units are provided for each transfer method. By switching the IO control unit corresponding to the transfer method connected to the lower level using a deep switch or the like, a channel control device is provided in which other control units are shared, and data transfer is performed.

0003

[Problems to be Solved by the Invention] Such a channel control device is equipped with an IO control section for each transfer method, since the transfer method differs depending on the peripheral control device connected to the lower level.
It is switched using a deep switch etc. to correspond to the connected transfer method. Therefore, a person must set deep switches for each transfer method in each channel control device. In addition, the number of channel control devices in a single system is increasing year by year, and the number of transfer methods and transfer rates is increasing, and a large number of deep switches are being set, so there is a possibility of incorrect settings. However, there is a drawback that reliability is reduced.

SUMMARY OF THE INVENTION An object of the present invention is to provide a channel system that eliminates these drawbacks and prevents erroneous settings when setting a transfer method.

[0005]

[Means for Solving the Problems] The present invention provides a channel system in which a channel control device initializes a peripheral device via a common interface and executes data transfer for a plurality of transfer methods. The channel control device includes a setting means for generating transfer method information for installation, and a first control means for controlling a response with the common interface and sending transfer method information from the setting means to the common interface. a second control means that can individually respond to a plurality of transfer methods and receives transfer method information from a common interface; a determination means that determines a transfer method from the transfer method information received by the second control means; It is characterized by comprising a storage means for storing the transfer method determined by the means and for transmitting the transfer method to the second control means.

[0006]

Embodiments Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. The channel system shown in FIG. 1 includes a channel control device 1 that performs data transfer for a plurality of transfer methods.
, a lower peripheral control device 10 , and a common interface 6 that connects the channel control device 1 and the peripheral control device 10 .

[0008] The channel control device 1 also includes a data transfer control section 2 that controls data transfer, 2TRIP, 4TR
An IO control unit 5 that can individually handle transfer methods such as IP and DSF, a transfer method discrimination circuit 3 that receives and discriminates transfer method information sent from a lower peripheral control device 10, and a transfer method discrimination circuit 3 that determines the transfer method. It includes a transfer mode storage register 4 that stores information indicating a transfer method with the connected peripheral control device 10.

Furthermore, the peripheral control device 10 includes an initial setting circuit 11 for sending out transfer method information indicating its own transfer method when the peripheral control device 10 is initialized, and an IO circuit for controlling responses with the common interface 6. A control section 12 is provided.

Next, the operation of this embodiment will be explained.

At the time of initial setting of the peripheral control device 10, the channel control device 1 receives a transfer method from the initial setting circuit 11 in the peripheral control device 10 in order to know the transfer method with the peripheral control device 10 connected to the lower level. Information is transferred via the common interface 6 using the IO control unit 12. At this time,
Normally, the transfer method has not been determined yet, but at the time of initial setting, for example, only 4 TRIP mode transfers are unified, and transfer method information is transferred. Further, it is assumed that the transfer method information is transferred using the data line within the common interface 6, and no dedicated line is provided.

Next, the transfer method information transferred via the common interface 6 is sent by the IO control unit 5 of the channel control device to the transfer method determination circuit 3, where the transfer method is determined and the lower device When the transfer method is determined, the transfer mode storage register 4 is set. The transfer mode storage register 4 selects the transfer method of the corresponding IO control unit 5. Once this operation is complete,
The transfer method is determined and subsequent data transfer begins.

[0013] As described above, this embodiment has a peripheral control device including a common interface for exchanging data with the peripheral control device, an initial setting circuit for sending transfer method information to the channel control device, and a common interface. It includes a transfer method determination circuit that can determine the transfer method, and can perform data transfer using a plurality of transfer methods by changing the transfer mode.

That is, in this embodiment, a peripheral control device includes a common interface for exchanging data with peripheral control devices, an initial setting circuit for sending transfer method information to a channel control device, and a peripheral control device that discriminates transfer method information. It is equipped with a channel control device that can perform data transfer by changing the transfer mode for multiple transfer methods, and peripheral control is performed from the channel control device via an initialization signal in a common interface. When instructing the device to perform initial settings, the initial setting circuit transfers the transfer method information to the upper level channel control device, and the transfer method determination circuit judges the transfer method information to automatically set the channel control device. Transfer method can be set.

[0015]

As described above, in the present invention, when initializing a peripheral control device, the initial setting circuit in the peripheral control device transmits transfer method information via a common interface to the transfer method determining means in the channel control device. to determine the transfer method mode. Furthermore, by switching the second control means for each transfer method in the transfer method mode, it is possible to eliminate settings such as deep switches, and erroneous settings are eliminated, which has the effect of improving reliability.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention.

[Explanation of symbols]

1 Channel control device 2 Data transfer control unit 3 Transfer method discrimination circuit 4 Transfer mode storage register 5 IO control section (channel device side) 6 Common interface 10 Peripheral control device 11 Initial setting circuit

Claims (1)

[Claims] Claim 1: In a channel system in which a channel control device initializes a peripheral device via a common interface and executes data transfer for a plurality of transfer methods, the peripheral device receives transfer method information for setting the transfer method. The channel control device has a setting means for generating the information, and a first control means for controlling the response with the common interface and sending the transfer method information from the setting means to the common interface, and the channel control device individually generates the information for the plurality of transfer methods. a second control means for receiving transfer method information from the common interface, a determining means for determining a transfer method from the transfer method information received by the second control means, and storing the transfer method determined by the determining means. and storage means for transmitting the transfer method to the second control means.