JP2000293476A - System for resource allocation to pci device and its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To place a personal computer interface(PCI) device which could not be placed in operation owing to a resource deficiency in operation by releasing resources assigned to the PCI device that a program used in response to the notification of the end of the use of the PCI device. SOLUTION: A program 7 to use a PCI device 1 and a program 8 to use a PCI device specify the PCI devices at the start and end of the use of the PCI devices and informs a management program 6 of them, and then resources are released. When a program 14 which uses a PCI device 3 is to use PCI devices 3 and 13, the management program 6 allocates unused resources 2 to the PCI devices 3 and 13. The program 14 which uses the PCI device 3 secures a memory 31 and an interruption number 41 to use them by the PCI devices 3 and 13 and sets their contents in the resource table 15 of PCI devices and the PCI devices 3 and 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a PCI (Personal)
The present invention relates to a method and a method for allocating resources to a computer interface device.

[0002]

2. Description of the Related Art A PCI device used in a computer operates using resources secured / set when the computer is started or when the OS is started. These resources are reserved / set for each PCI device. That is, conventionally, the assignment of the resources of the PCI device used by the computer is static, which is not changed after being secured / set at the time of starting the computer.

[0003]

However, at present, after the OS is started, the resources secured / set are:
When a plurality of PCI devices are used without being released / changed, there is a problem that the PCI devices can be used only within the range of resources that can be reserved / set.

As resources, there are an interrupt number, a memory, and the like.
The memory capacity allocated to the device is also much smaller than the memory capacity of the computer.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and a method for allocating resources to a PCI device, which enables a PCI device which could not be operated conventionally due to lack of resources to operate.

[0006]

According to the present invention, a method for allocating resources to a PCI device according to the present invention is described as follows.
A notification unit that notifies the management unit of the start and end of the use of the CI device by designating the PCI device; and the program, when receiving the notification of the start of the use of the PCI device from the notification unit, removes the unused resource by the program. Management means for allocating to the PCI device to be used, and releasing the resource allocated to the PCI device used by the program when receiving notification of the end of use of the PCI device from the notification means. It is characterized by the following.

[0007] In the resource allocation method for a PCI device according to the present invention, in the resource allocation method for a PCI device described above, means for managing resources allocated to the PCI device for each of the PCI devices, Means for managing the device.

In the resource allocation method for a PCI device according to the present invention, a step of notifying the start of use of a PCI device by designating the PCI device during execution of a program, and receiving a notification of the start of use of the PCI device. Assigning unused resources to the PCI devices used by the program, and notifying the end of use of the PCI devices by specifying the PCI devices during execution of the program,
Upon receiving notification of the end of use of the PCI device from the program, the PC used by the program
Releasing the resource allocated to the I-device.

Further, according to the resource allocation method for a PCI device according to the present invention, in the above-mentioned method for allocating resources to a PCI device, a step of managing the resources allocated to the PCI device for each of the PCI devices; And managing the device.

The computer-readable recording medium according to the present invention, when notified of the start of use of a PCI device, allocates an unused resource to a PCI device used by a program, and sends a notification of the end of use of the PCI device. When receiving the program, the management means for releasing the resources allocated to the PCI device used by the program
A program for causing a computer to function as a notifying means for notifying the start and end of use of the I device by designating the PCI device is recorded.

[0011] The computer-readable recording medium according to the present invention may further comprise a notification unit for designating the PCI device to notify the start and end of the use of the PCI device during execution of the program. When the notification is received, the unused resources are allocated to the PCI device used by the program, and when the notification of the end of the use of the PCI device is received from the notification means, the resources are allocated to the PCI device used by the program. And recording a program for causing a computer to function as management means for releasing the resources.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The features of the embodiment of the present invention are shown in FIG.
This will be described with reference to FIG.

FIG. 1 shows how to secure / set and release / change resources 2 when memory 2 and interrupt number 4 are used.

In the computer 1, a PCI device 11,
When using 12, those devices require the resources 2 of the computer 1 to operate.

The allocation of the resources 2 is controlled by the management program 6.

The management program 6 not only secures the memory 3 and the interrupt number 4 in the resources 2 required by the PCI devices 11 and 12 and sets the PCI devices, but also releases those resources and sets the PCI devices. Change the settings of.

Conventionally, resources required by a PCI device are statically secured at the time of starting a computer or the like, and its settings cannot be changed. Therefore, only P for resources
The CI device could not be used. In order to solve this problem, in the management program 6, a PCI device in which resources have been reserved / set (in a higher-level program or the like)
If there is a device that is not being used, the resources of the PCI device are released and assigned to another PCI device, thereby dynamically allocating the resources.

Conventionally, the resource allocation is static, and the PCI device can be used only for the resource. However, by dynamically allocating the resource by the management program 6, the resource allocation is performed. The above PCI devices can be used.

Next, this embodiment will be described with reference to FIG.

The management program 6 secures / sets and releases / changes resources 2 allocated to the PCI device 1 (11) and the PCI device 2 (12) used in the computer 1.

In the figure, 5 is a computer 1, an OS
Is a program or an OS that operates at the time of startup (hereinafter, typically referred to as “OS5”). The management program 6 is a program that operates on the OS 5, and the program 7 that uses the PCI device 1 and the program 8 that uses the PCI device 2 are programs that operate on the OS 5.

The program 7 using the PCI device 1 and the program 8 using the PCI device 2 are P
When the management program 6 is notified that the CI device 1 (11) and the PCI device 2 (12) are to be used, the management program 6 secures resources released from the resource 2 (indicated by 631, 632, 641, and 642). .),
The program 7 using the PCI device 1 and the program 8 using the PCI device 2 use the PCI device 1 (11) and the PCI device 2 (1
Resource table 9 of PCI device 1 required to use 2), resource table 1 of PCI device 2
It is set to 0 (indicated by 69 and 610). The management program 6 also stores the same contents as the resource table 9 of the PCI device 1 and the resource table 10 of the PCI device 2 in the PCI device 1 (11), the PCI device 2
It is also set to (12) (shown by 611 and 612). Further, the management program 6 registers the PCI device to which the resource has been allocated in the device list 16.

The program 7 that uses the PCI device 1 and the program 8 that uses the PCI device
The PCI device 1 (11) and the PCI device 2 (12) can be accessed by referring to the resource table 9 of the device 1 and the resource table 10 of the PCI device 2 (indicated by 711 and 812).

The management program 6 enables release / change in addition to securing / setting of the resources 2 described above. (The release / change paths in the figure are the same as the secure / set paths, respectively.) Currently, PCI device 1 (11) and PCI device 2
According to (12), the memories 31, 32 and the interrupt number 41,
If it is assumed that 42 is reserved, there is no space in the memory 3 and the interrupt number 4 or there is little remaining, so that
The PCI device 3 (13) cannot be used because the resource 2 has no surplus.

A program 7 that uses the PCI device 1
Alternatively, the program 8 using the PCI device 2 is a PC
When the use of the I device 1 (11) or the PCI device 2 (12) is completed, the management program 6 is notified by specifying the PCI device that the use of the PCI device is completed. The management program 6 deletes the PCI device specified by the program that has notified the end of the use of the PCI device from the device list 16. Device list 16
The resource table of the PCI device corresponding to the PCI device deleted from is discarded. Therefore, by referring to the device list 16 and the resource table of the PCI device, the management program 6 can know the used resources and the unused resources.

At this time, if the management program 6 receives a notification from the program 14 using the PCI device that the use of the PCI device 3 (13) has been started, the management program 6 transmits the device list 16 and the PCI device 3 as described above. By referring to the resource table of the PCI device 3
Assign to (13). The process of allocating resources is
The above PCI device 1 (11) or PCI device 2
This is similar to the case where resources are allocated to (12).

Next, this description will be further made with reference to FIG.

In the computer 1, the PCI device 1
(11) The PCI device 2 (12) and the PCI device 3 (13) are used.

The management program 6 is a program that runs on the OS 5.

The program 7 using the PCI device 1, the program 8 using the PCI device 2, and the PC
The program 14 that uses the I device 3 is also a program that operates on the OS 5.

The program 7 using the PCI device 1, the program 8 using the PCI device 2, and the PC
The program 14 that uses the I device 3 refers to the resource tables 9, 10, and 15 of the PCI device 1 (11), the PCI device 2 (12), and the PCI device 3 (13), and refers to the PCI device 1 (11), The PCI device 2 (12) and the PCI device 3 (13) can be used.

The resource table 9 of the PCI device 1
The management program 6 sets the resource table 10 of the PCI device 2 and the resource table 15 of the PCI device 3 using the data set in the OS 5.

The management program 6 secures / sets the memory 3 of the resource 2 and the interrupt number 4, respectively.
When resource 2 is not allocated to three of PCI device 1 (11), PCI device 2 (12), and PCI device 3 (13) (when resource 2 is insufficient)
First, PCI device 1 (11), PCI device 2
The resource 2 is allocated to (12).

The memories 31 and 32 in the memory 3 and the interrupt numbers 41 and 42 in the interrupt number 4 are secured (6).
31, 632, 641, 642), and they are
The same contents are set in the I device 1 (11) and the PCI device 2 (12) (indicated by 611 and 612), and the same contents are set in the resource table 9 of the PCI device 1 and the resource table 10 of the PCI device (69 and 610). Shown).

With the above settings, the program 7 using the PCI device 1 and the program 8 using the PCI device 2 are stored in the resource table 9 of the PCI device 1,
Referring to the resource table 10 of the I device 2, the PCI device 1 (11) and the PCI device 2 (1
2) can be used (indicated by 711 and 812).

The program 7 that uses the PCI device 1 and the program 8 that uses the PCI device
When starting and ending use of the device, the PCI
The management program 6 is notified by designating a device. The management program 6 releases the resources when receiving the notification of the end.

Program 1 using PCI device 3
4 wants to use the PCI device 3 (13) (14
13), the management program 6 stores the device list 1
6, the unused resource 2 of the PCI device 1 (11) and the PCI device 2 (12) is allocated to the PCI device 3 (13).

For example, if the PCI device 1 (11) is not used, the memory 31 and the interrupt number 41 allocated to the PCI device 1 (11) are released, and are allocated to the PCI device 3 (13).

Thereafter, the program 14 using the PCI device 3, the memory 31 is reserved for use by the PCI device 3 (13) (indicated by 631), the interrupt number 41 is reserved (indicated by 641), To the PCI device resource table 15 and the PCI device 3 (1
3) (shown by 615 and 613).

With this setting, the program 14 using the PCI device 3 refers to the resource table 15 of the PCI device 3 (indicated by 1415) and can use the PCI device 3 (13) (indicated by 1413). .

Program 1 using PCI device 3
4 starts and ends the use of the PCI device 3 (13), it notifies the management program 6 like the program 7 using the PCI device 1 and the program 8 using the PCI device 2, and the management program The contents are set in the device list 16.

The present invention does not limit the environment in which the program of the present invention operates.
In an environment using a PCI device, a similar effect can be obtained in any environment.

[0043]

As described above, according to the present invention, P
It is possible to allocate resources to a larger number of PCI devices and operate the devices compared to a case where resources are statically allocated to CI devices.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of an embodiment of the present invention.

FIG. 2 is a first diagram showing an embodiment of the present invention.

FIG. 3 is a second diagram showing the embodiment of the present invention.

[Explanation of symbols]

 2 resource 3 memory 4 interrupt number 6 management program 7 program using PCI device 1 8 program using PCI device 2 14 program using PCI device 3 9 resource table for PCI device 1 10 resource table for PCI device 2 15 PCI Resource table of device 3 11 PCI device 1 12 PCI device 2 13 PCI device 3 16 Device list

Claims (6)

[Claims] 1. A system in which a PCI (Personal) is executed during execution of a program.
A notification unit that notifies the management unit of the start and end of the use of the device by designating the PCI device; and, when receiving the notification of the start of the use of the PCI device from the notification unit, removes the unused resource. Management means for allocating to the PCI device used by the program, and releasing the resource allocated to the PCI device used by the program when receiving notification of the end of use of the PCI device from the notification means; A method of allocating resources to PCI devices, comprising: 2. A method for allocating resources to PCI devices according to claim 1, wherein: means for managing the resources allocated to the PCI devices for each of the PCI devices; means for managing the PCI devices in use; A resource allocation method, further comprising: 3. A step of notifying the start of use of a PCI device by designating the PCI device during execution of the program, and receiving the notice of the start of use of the PCI device, the program causes the program to use an unused resource. Allocating to the PCI device to be used; notifying the end of use of the PCI device by designating the PCI device during execution of the program; receiving notification of the end of use of the PCI device from the program And the PC used by the program
Releasing the resource allocated to the I-device; and allocating the resource to the PCI device. 4. The method for allocating resources to a PCI device according to claim 3, wherein: managing resources allocated to the PCI devices for each of the PCI devices; and managing a PCI device in use; A resource allocation method, further comprising: 5. When the notification of the start of the use of the PCI device is received, the unused resource is allocated to the PCI device used by the program, and when the notification of the end of the use of the PCI device is received, the program uses the resource. During the execution of the program, the management means for releasing the resources allocated to the PCI device
A computer-readable recording medium on which is recorded a program for causing a computer to function as a notification unit for notifying the start and end of use of a CI device by designating the PCI device. 6. When a notification of the start of use of the PCI device is received from a notification unit that notifies the start and end of use of a PCI device by designating the PCI device during execution of the program, the unused resources are removed. A computer as management means for allocating to the PCI device used by the program and receiving the notification of the end of use of the PCI device from the notifying means and releasing the resource allocated to the PCI device used by the program; A computer-readable recording medium on which a program for causing a computer to function is recorded.