Regional partial reconfiguration of a programmable device

• US 10,218,359 B2
• Filed: 06/29/2017
• Issued: 02/26/2019
• Est. Priority Date: 06/29/2017
• Status: Active Grant

• Current Assignee: Altera Corporation (Intel Corporation)
• Original Assignee: Intel Corporation
• Inventors: Atsatt, Sean R., Draper, Andrew
• Primary Examiner(s): A, Minh D
• Assistant Examiner(s): Cho, James H
• Application Number:
  US15/638,151
• Publication Number:
  US 20190007050A1
• Time in Patent Office: 607 Days
• Field of Search: None
• CPC Class Codes: G06F 15/7867 with reconfigurable architecture
• CPC Class Codes: G06F 2009/45583 Memory management, e.g. access or allocation
• CPC Class Codes: G06F 30/34 for reconfigurable circuits, e.g. field programmable gate arrays [FPGA] or programmable logic devices [PLD]
• CPC Class Codes: G06F 9/45558 Hypervisor-specific management and integration aspects
• CPC Class Codes: G06F 9/5077 Logical partitioning of resources; Management or configuration of virtualized resources specific details on emulation or internal functioning of virtual machines G06F9/455
• CPC Class Codes: H03K 19/17736 Structural details of routing resources
• CPC Class Codes: H03K 19/17756 for partial configuration or partial reconfiguration
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

Devices and methods for reconfiguring a programmable fabric include identifying resources in a programmable fabric of the programmable device as belonging to a partition. Reconfiguring the programmable fabric also includes creating a mask for the partition that indicates that the identified resources belong to the partition. Reconfiguring the partition also includes reconfiguring resources, via a configuration controller, in programmable fabric associated with the partition using the mask without changing resources associated with other partitions in the programmable fabric.

Claims

1. A method for configuring a programmable device, comprising:

identifying resources in a programmable fabric of the programmable device as belonging to a partition;

creating a mask for the partition that indicates that the identified resources belong to the partition;

storing the mask on the programmable device; and

reconfiguring the identified resources, via a configuration controller, in the programmable fabric associated with the partition using the mask without changing resources associated with other partitions in the programmable fabric, wherein the identified resources are reconfigured by applying the mask at runtime of the programmable device after configuration data is received by the programmable device.

2. The method of claim 1, wherein identifying resources in the programmable fabric comprises assigning global resources used by multiple partitions to a base partition.

3. The method of claim 2, wherein the global resources comprise input/output ports, interfaces, hard processor systems, clock networks, or any combination thereof.

4. The method of claim 1, wherein the identified resources comprise resources that are local to the partition.

5. The method of claim 4, wherein the resources local to the partition comprise configuration random access memory, embedded random accessible memory, routing, or any combination thereof.

6. The method of claim 1, wherein the identified resources comprise resources that span partitions by entering or exiting the partition.

7. The method of claim 6, wherein the resources that span partitions comprises horizontal lines entering the partition, horizontal lines leaving the partition, vertical lines entering the partition, vertical lines exiting the partition, or any combination thereof.

8. The method of claim 1, wherein the partition comprises one of a plurality of partitions in the programmable device.

9. The method of claim 1, wherein the programmable device is contained in a server.

10. The method of claim 9, wherein a server manager for the server assigns or identifies the resources belonging to each partition of a plurality of partitions including the partition.

11. The method of claim 10, wherein the partition comprises a virtual machine of the server.

12. The method of claim 1, wherein reconfiguring the partition comprises setting configuration memory corresponding to the partition to a default configuration using the mask.

13. The method of claim 12, wherein setting the configuration memory corresponding to the partition to a default configuration comprises zeroing out the configuration memory corresponding to the partition.

14. An integrated circuit device, comprising:

a programmable fabric comprising a plurality of partitions; and

a configuration controller configured to;

creating a mask for a partition of the plurality of partitions that indicates that resources belong to the partition;

storing the mask on the integrated circuit device; and

reconfiguring resources of the programmable fabric associated with the partition using the mask without changing resources associated with other partitions of the plurality of partitions in the programmable fabric, wherein the resources are reconfigured by applying the mask at runtime of the integrated circuit device after configuration data is received by the integrated circuit device.

15. The integrated circuit device of claim 14, wherein the programmable fabric comprises a field-programmable gate array.

16. The integrated circuit device of claim 14, wherein the mask comprises an allowed mask indicating a portion of resources of the programmable fabric that is permitted to change with the partition of the plurality of partitions.

17. The integrated circuit device of claim 16, wherein a not-allowed mask of the partition is created by inverting allowed masks of one or more other partitions of the plurality of partitions.

18. A tangible, non-transitory, and machine-readable medium, comprising machine-readable instructions stored thereon that when executed cause a processor to:

receive an indication of a partition of a plurality of partitions of a programmable fabric of a programmable device that is to be reconfigured;

identity resources of the programmable fabric associated with the partition to generate a mask;

store the mask on the programmable device;

set the partition to a safe state using the mask; and

configure the partition using the mask, wherein the identified resources are changed by applying the mask at runtime of the programmable device after configuration data is received by the programmable device.

19. The tangible, non-transitory, and machine-readable medium of claim 18, wherein the instructions are configured to cause the processor to generate the mask at runtime of the programmable fabric.

20. The tangible, non-transitory, and machine-readable medium of claim 18, wherein setting the partition to a safe state comprises zeroing out a configuration memory for the partition prior to configuring the partition.

21. An integrated circuit device, comprising:

a programmable fabric comprising a plurality of partitions; and

a configuration controller configured to;

create an indication of which portion of resources of the programmable fabric of a partition of the plurality of partitions is allowed to change; and

reconfigure the portion of resources of the programmable fabric associated with the partition using the indication without changing resources associated with other partitions of the plurality of partitions in the programmable fabric, wherein the portion of resources of the programmable fabric associated with the partition are reconfigured by using the indication at runtime of the integrated circuit device after configuration data is received by the integrated circuit device.