JPH03191455A - Method and device for slave synchronization control - Google Patents

Abstract

PURPOSE:To improve bus transfer efficiency by setting up a data bus including buses between one master device and respective slave devices and simultaneously executing data transfer. CONSTITUTION:The master devices 11, 12 simultaneously send control signals to both of the slave devices 13, 14 and the data bus including buses 105, 106 is set up between the master device 11 or 12 and the slave devices 13, 14 by a data transfer control device 10. When the master device 11 or 12 has control right, data are simultaneously transferred from the master control device 1 or 2 to both processors 8 in the slave devices 13, 14 to synchronously operate both the slave devices 13, 14.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is used to control data paths connected to slave devices in information processing equipment, etc., and in particular, slave synchronous control that simultaneously controls duplicate slave devices. METHODS AND APPARATUS.

〔overview〕

The present invention provides a slave synchronization control method and apparatus for controlling duplex slave devices by a duplex host device via a duplex bus, in which each duplex slave device is simultaneously controlled by one of the duplex host devices. The aim is to improve bus transfer efficiency by making it possible to control .

[Conventional technology]

Conventionally, this type of dependent synchronous control device is shown in FIGS. 4 and 5.
As shown in the figure, a first host device 11, a first slave device 13 connected thereto, a second host device 12 provided in duplication therewith, a second slave device 14 connected thereto, and a first slave device 13 connected thereto. It includes a bus 105, a first bus abiter 6 connected to the first bus 105, a second bus 106, and a second bus abiter connected to the second bus 106.

The first higher-level device 11 has a first higher-level control device l;
The input to this first higher level control device 1 is the first higher level control bus 10
1, and the output of the first bus data transfer device 4 and the first bus arbiter are both connected to the first bus 105. Similarly, the second host device 12 connects the second host control device 2 and the second bus data transfer device 5 which is connected to the second host control device 2 via the second host control bus 102. The output of the second bus data transfer device 5 and the second bus arbiter are both connected to the second bus 106 .

Furthermore, the first and second slave devices 13 and 14 are respectively connected to first and second bus data transfer devices 4 and 5 connected to first bus 105 and first and second bus data transfer devices 4 and 5 connected to second bus 106. Data transfer devices 4 and 5 for the second bus, and data transfer devices 4 and 5 for the first and second buses.
A first processing device 8 and a second processing device 9 are connected to the outputs of the first processing device 8 and the second processing device 9 via first and second processing control buses 107 and 108, respectively.

Next, the operation of this conventional example will be explained. Note that the data transfer route is shown using a thick solid line in the figure.

Here, the designated numbers of the first bus data transfer device 4 and the second bus data transfer device 5 are set as "00" for both the first and second upper control devices 1 and 2, and The first processing device 8 is "04", and the second processing device 9 is "04".
is "05", and the first processing device 8 of the second slave device 14 is "05".
14", and the second processing device 9 is set to "15".

For example, in order for the first upper control device 1 having control authority to synchronously control the first processing device 8 of the first and second slave devices 13 and 14, as shown in FIG.
The data is transferred to the first processing device 8 of the first dependent device 13 with the designated number “04”, and the same data is transferred from the first processing device 8 of the first dependent device 13 to the designated number “1” as shown in FIG.
The first bus 1 is connected to the first processing device 8 of the second slave device 14 of “4”.
05, and synchronously controlled the first and second slave devices 13 and 14.

[Problem that the invention seeks to solve]

In the conventional slave synchronization control method and device described above, when sending the same data to a duplicated slave device, one data occupies the bus twice and sends it out, which has the disadvantage of reducing bus transfer efficiency. there were.

SUMMARY OF THE INVENTION An object of the present invention is to provide a slave synchronization control method and device that improves bus transfer efficiency by eliminating the above-mentioned drawbacks.

[Means for solving problems]

The slave synchronous control method of the present invention is a slave synchronous control method in which a duplicated slave device is controlled by a duplicated higher-level device via a duplicated bus. The present invention is characterized in that a control signal is simultaneously transmitted to both of the slave devices, thereby establishing a data path including the bus between the two higher-level devices and each slave device, and simultaneously performing data transfer.

The slave synchronous control device of the present invention includes duplexed first and second higher-level devices, duplexed first and second slave devices, the first and second higher-level devices, and the first and second slave devices. In the slave synchronous control device, the first and second higher-level devices simultaneously send control signals to both the first and second slave devices. The data transfer control means is characterized in that it includes a data transfer control means for controlling to transmit a data path, thereby setting a data path including the first and second buses between the host device and the first and second slave devices. .

Further, in the slave synchronous control device of the present invention, the data transfer control means is a data transfer multiple control device that simultaneously transmits a control signal to both the first and second slave devices to control data path setting. , first and second bus transfer devices that are connected to the first and second buses and transfer the control signal and data, respectively provided between the data transfer device and the first and second bus transfer devices. and first and second data transfer control buses.

[Effect]

In the present invention, for example, the data transfer multiple control device
A control signal is transmitted to the first and second slave devices, and the first and second data transfer buses, the first and second bus transfer devices, and the first and second buses connect one host device and the A data path is set up between the first and second slave devices, and data is transferred at the same time.

Therefore, the bus occupation time is shortened, and the bus transfer efficiency can be improved.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an example of a slave synchronous control device of the present invention.

In this embodiment, the first and second host devices 11 are duplicated.
and 12, and duplicated first and second dependent devices 1
3 and 14, and the first and second host devices 11 and 1
2 and first and second slave devices 13 and 14, respectively, and is provided with duplexed first and second buses 105 and 106, the present invention is characterized by: The second higher-level devices 11 and 12 simultaneously transmit control signals to both the first and second slave devices 13 and 14, and thereby the higher-level device 11 or 12 and the first and second slave devices 13 and 14 It includes a data transfer control device 10 as data transfer control means for controlling the setting of a data path including first and second buses 105 and 106 therebetween.

The data transfer control device 10 simultaneously transmits control signals to both the first and second slave devices 13 and 14 and controls the data path setting. between the first and second bus transfer devices 4 and 5 that are connected to buses 105 and 106 respectively and transfer the control signals and data, and between the data transfer multiple control device 3 and the first and second bus transfer devices 4 and 5; First and second data transfer control buses 103 and 104 are provided, respectively.

Furthermore, the first higher-level device includes a first higher-level control device 1, the second higher-level device includes a second higher-level control device 2, and the first and second buses 105 and 106 each have a bus occupancy control device. The first and second buses Abitaro and 7 are connected, and the first and second slave devices 13 and 14 are connected to the first and second bus data transfer devices 4 and 5, respectively, which are connected to the first bus 105. First and second bus data transfer devices 4 and 5 connected to second bus 106
and a first processing device 8 and a second processing device 9 connected to the outputs of the first and second bus data transfer devices 4 and 5 via first and second processing control buses 107 and 108, respectively. I'm here.

Next, the operation of this embodiment will be explained separately for the case where the first host device 11 has the control right (FIG. 2) and the case where the second host device 12 has the control right (FIG. 3). Note that the data transfer route is shown by a thick solid line in the figure.

First, a case where the first higher-level device 11 has control authority will be described. As shown in FIG. 2, both the first bus data transfer device 4 and the second bus data transfer device 5 owned by the first higher-level device 11 that has control authority have the designated number "00".
Then, both the first bus data transfer device 4 and the second bus data transfer device 5 owned by the second host device 12 on standby are designated with the designated number “10”, and the first processing of the first slave device 13 is performed. The designated number of the first bus data transfer device 4 controlled by the device 8 is set to “04”, and the second bus data transfer device 50 is set to “04”.
The second processing device 9 controls the designated number to be "14".

Set the designated number of the first bus data transfer device 4 to "05",
Set the designated number of the second bus data transfer device 5 to "15",
The designated number of the data transfer device 4 for the first bus controlled by the first processing device 8 of the second slave device 14 is set to "14", the designated number of the data transfer device 50 for the second bus is set to "04", First bus data transfer device 40 controlled by second processing device 9
Set the designated number to "15" and connect the data transfer device 50 for the second bus.
Specify the designated number as "05".

For example, when the first higher-level control device 1 having control authority simultaneously transfers data between the first processing devices 8 of the first slave device 13 and the second slave device 14, the first higher-level control device 1 transfers data to multiple control devices. 3 to transfer data to designated number "04" via the first upper control bus 101, and the data transfer multiple control device 3 transfers the data transfer device 4 for the first bus to the first data transfer control bus 103 according to the instruction. and also connects the second bus data transfer device 5 to the second data transfer control bus 1.
At the same time, it instructs data transfer to designated number "04" via 04. The data transfer device 4 for the first bus of the first higher level device 11 requests the first bus arbiter 6 to take possession of the first bus 105, and the first bus arbiter 6 selects the right to occupy the first bus 105 and The packet Wll is given to the first bus data transfer device 4 to establish data transfer from the specified number “00” to “04” of the first bus data transfer device 4, and the first processing of the first slave device 13 is performed. The first bus data transfer device 4 controlled by the device 8 receives the data that has entered its own device designation number “04” and transfers the data to the first processing device 8 via the first processing control bus 107. do.

Also, the second bus data transfer device 5 of the first host device 11
requests the second bus 106 to occupy the second bus 106, and the second bus 106 selects the exclusive right to the second bus 106 and transfers the second bus data transfer device 5 of the first host device 11 to the second bus 106. , the second bus data transfer device 50 designation number “
00" to "04", and the second bus data transfer device 5 controlled by the first processing device 8 of the second slave device 14 transfers the data that has entered its own device designation number "04". and transfers the data to the first processing device 8 via the first processing control bus 107.

As described above, data is simultaneously transferred from the first higher-level control device 1 to the first processing devices 8 of both the first slave device 13 and the second slave device 14.

Next, a case where the second higher-level device 12 has control authority will be described.

As shown in FIG. 3, the first processing device 8 and the second processing device 9 of both the first dependent device 13 and the second dependent device 14
The designated numbers of each of the first bus data transfer device 4 and second bus data transfer device 5 controlled by Both the first bus data transfer device 4 and the second bus data transfer device 5 of the host device 11 have designated numbers “IO”.
”, and the designated numbers of both the first bus data transfer device 4 and the second bus data transfer device 5 of the second host device 12 change to “00”.

As a result, even if the control right is in the second higher level device 12, the control right is in the first higher level device 11, from the second higher level control device 2 to the first dependent device 13 and the second dependent device 14, Data can be transferred to both first processing devices 8.

〔Effect of the invention〕

As explained above, the present invention provides a slave synchronization control method and apparatus for controlling duplex slave devices by a duplex control device, in which each duplex control device has a duplex bus that can simultaneously control both duplex slave devices. This makes it possible to efficiently control the redundant slave devices simultaneously, enable synchronized operation of the slave devices, and improve bus transfer efficiency.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a slave synchronizer according to the present invention. FIG. 2 is a block diagram showing an example of its operation. FIG. 3 is a block diagram showing another example of the operation. FIG. 4 is a block diagram showing an example of the operation of a conventional example. FIG. 5 is a block diagram showing another example of the operation of the conventional example. DESCRIPTION OF SYMBOLS 1... First higher-level control device, 2... Second higher-level control device, 3... Data transfer multiple control device, 4... Data transfer device for first bus, 5... For second bus data transfer device, 6... first bus abiter, 7... second bus abiter, 8... first processing device, 9... second processing device, 1
0...Data transfer control device, 11...First host device, 12...Second host device, 13...First slave device,
14... Second slave device, 101... First higher level control bus, 102... Second higher level control bus, 103... First data transfer control bus, 104... Second data transfer control bus , 105...first bus, 106...second bus,
107...first processing control bus, 108 processing control bus.

Claims (1)

[Scope of Claims] 1. A slave synchronization control method in which a duplicated slave device is controlled by a duplicated higher-level device via a duplicated bus, comprising: controlling a duplicated slave device from one of the duplicated higher-level devices; A dependent synchronous control characterized in that a control signal is sent to both slave devices at the same time, thereby setting up a data path including the bus between the one higher-level device and each slave device, and simultaneously performing data transfer. Method. 2. Connecting the duplexed first and second higher-level devices, the duplexed first and second slave devices, and the first and second higher-level devices and the first and second slave devices, respectively, to create a duplexed device. In the slave synchronous control device comprising first and second buses, the first and second higher-level devices simultaneously transmit control signals to both the first and second slave devices, thereby A slave synchronous control device comprising: data transfer control means for controlling to set up a data path including the first and second buses between a host device and the first and second slave devices. 3. The data transfer control means includes a data transfer multiple control device that simultaneously transmits control signals to both the first and second slave devices and controls data path settings; first and second bus transfer devices that are connected to each other and transfer the control signal and data;
3. The slave synchronous control device according to claim 2, further comprising first and second data transfer control buses provided between the data transfer device and the first and second bus transfer devices, respectively.