Method and system for preparing modularized circuit designs for dynamic partial reconfiguration of programmable logic

• US 8,560,996 B1
• Filed: 02/15/2011
• Issued: 10/15/2013
• Est. Priority Date: 02/15/2011
• Status: Active Grant

• Current Assignee: Xilinx, Inc. (Advanced Micro Devices, Inc.)
• Original Assignee: Xilinx, Inc. (Advanced Micro Devices, Inc.)
• Inventors: Brebner, Gordon J., Neely, Christopher E.
• Primary Examiner(s): TAT, BINH C
• Application Number:
  US13/027,667
• Time in Patent Office: 973 Days
• Field of Search: 716116-120
• US Class Current: 716/117
• CPC Class Codes: G06F 30/34 for reconfigurable circuits, e.g. field programmable gate arrays [FPGA] or programmable logic devices [PLD]

Abstract

Approaches for dynamically reconfiguring a programmable integrated circuit (IC) are disclosed. In response to user input to a reconfiguration controller while a circuit is operating in programmable resources of the programmable IC, a replacement module and a module to be replaced in the circuit are selected. A process determines whether or not interfaces of the replacement module are compatible with interfaces of the circuit to the module to be replaced. In response to the interfaces of the replacement module and the interfaces of the circuit to the module to be replaced being compatible, the programmable IC is partially reconfigured with a realization of the replacement module in place of a realization of the module to be replaced.

Claims

1. A method of dynamically reconfiguring a programmable integrated circuit (IC), including:

in response to user input to a reconfiguration controller, by computer, while a circuit is operating in programmable resources of the programmable IC, selecting a replacement module and a module to be replaced in the circuit;

determining, while the circuit is operating in the programmable IC, whether or not interfaces of the replacement module are compatible with interfaces of the circuit to the module to be replaced; and

in response to the interfaces of the replacement module and the interfaces of the circuit to the module to be replaced being compatible, partially reconfiguring the programmable IC with a realization of the replacement module in place of a realization of the module to be replaced.

2. The method of claim 1, wherein the determining whether or not the interfaces are compatible includes using metadata that describe behavior of the interfaces of the circuit and that describe behavior of the interfaces of the replacement module.

3. The method of claim 2, wherein the metadata that describe the interfaces of the module to be replaced is formatted in a hierarchical description of behavior of the interfaces, with interface types at a top level of the hierarchical description and attributes hierarchically organized below the interface types.

4. The method of claim 3, wherein a bottom level of the hierarchical description includes signal descriptions.

5. The method of claim 3, wherein the types of interfaces include one or more of packet, memory access, compute-specific, and event notification.

6. The method of claim 1, wherein the determining of compatibility of the interfaces includes:

verifying, for each interface of the circuit design connected to an interface of the module to be replaced, that there is one corresponding interface in the replacement module having an equivalent type.

7. The method of claim 1, wherein the determining whether or not the interfaces are compatible includes:

determining for each interface of the replacement module whether or not the interface is compatible, but dissimilar, with the corresponding interface of the circuit design; and

automatically generating an intermediary component that connects an interface of the replacement module to the corresponding interface of the circuit design in response to determining that the interface is compatible and dissimilar.

8. The method of claim 1, further comprising, in response to the interfaces of the replacement module and the interfaces of the circuit to the module to be replaced being compatible, determining placement of the replacement module in the programmable IC from metadata that describe placement of the circuit and the module to be replaced.

9. The method of claim 1, further comprising:

determining whether or not the replacement module fits in a site of the programmable IC occupied by the module to be replaced; and

in response to determining that the replacement module does not fit in the site of the programmable IC occupied by the module to be replaced, denying the partial reconfiguration of the programmable IC and outputting an error message.

10. The method of claim 1, further comprising:

determining whether or not the replacement module fits in a site of the programmable IC occupied by the module to be replaced; and

in response to determining that the replacement module does not fit in the site of the programmable IC occupied by the module to be replaced, re-placing and re-routing a circuit design of the circuit while reserving space for the replacement module.

11. The method of claim 1, further comprising:

determining whether or not all programmable resources required by the replacement module are available in a site occupied by the module to be replaced; and

in response to determining that all the programmable resources required by the replacement module are not available in the site occupied by the module to be replaced, denying the partial reconfiguration of the programmable IC and outputting an error message.

12. The method of claim 1, further comprising:

determining whether or not all programmable resources required by the replacement module are available in a site occupied by the module to be replaced; and

in response to determining that all the programmable resources required by the replacement module are not available in the site occupied by the module to be replaced, re-placing and re-routing a circuit design of the circuit while reserving space for the replacement module.

13. The method of claim 1, further comprising generating configuration data that implements the replacement module and connections to the circuit.

14. A system for dynamically reconfiguring a programmable integrated circuit (IC), including:

a memory arrangement configured with processor-executable instructions; and

at least one processor coupled to the memory arrangement;

wherein execution of the instructions by the at least one processor causes the at least one processor to perform operations including;

in response to user input to a reconfiguration controller while a circuit is operating in programmable resources of the programmable IC, selecting a replacement module and a module to be replaced in the circuit;

determining, while the circuit is operating in the programmable IC, whether or not interfaces of the replacement module are compatible with interfaces of the circuit to the module to be replaced; and

in response to the interfaces of the replacement module and the interfaces of the circuit to the module to be replaced being compatible, partially reconfiguring the programmable IC with a realization of the replacement module in place of a realization of the module to be replaced.

15. The system of claim 14, wherein:

the determining whether or not the interfaces are compatible includes using metadata that describe behavior of the interfaces of the circuit and that describe behavior of the interfaces of the replacement module;

the metadata that describe the interfaces of the module to be replaced is formatted in a hierarchical description of behavior of the interfaces, with interface types at a top level of the hierarchical description and attributes hierarchically organized below the interface types;

a bottom level of the hierarchical description includes signal descriptions; and

the types of interfaces include one or more of packet, memory access, compute-specific, or event notification.

16. The system of claim 14, wherein the determining of compatibility of the interfaces includes:

verifying, for each interface of the circuit design connected to an interface of the module to be replaced, that there is one corresponding interface in the replacement module having an equivalent type.

17. The system of claim 14, wherein the determining whether or not the interfaces are compatible includes:

determining for each interface of the replacement module whether or not the interface is compatible, but dissimilar, with the corresponding interface of the circuit design; and

automatically generating an intermediary component that connects an interface of the replacement module to the corresponding interface of the circuit design in response to determining that the interface is compatible and dissimilar.

18. The system of claim 14, wherein the operations further comprise, in response to the interfaces of the replacement module and the interfaces of the circuit to the module to be replaced being compatible, determining placement of the replacement module in the programmable IC from metadata that describe placement of the circuit and the module to be replaced.

19. The system of claim 14, wherein the operations further comprise:

determining whether or not the replacement module fits in a site of the programmable IC occupied by the module to be replaced;

determining whether or not all programmable resources required by the replacement module are available in the site occupied by the module to be replaced; and

in response to determining that the replacement module does not fit in the site of the programmable IC occupied by the module to be replaced, or determining that all programmable resources required by the replacement module are not available, denying the partial reconfiguration of the programmable IC and outputting an error message.

20. The system of claim 14, wherein the operations further comprise:

determining whether or not the replacement module fits in a site of the programmable IC occupied by the module to be replaced;

determining whether or not all programmable resources required by the replacement module are available in the site occupied by the module to be replaced; and

in response to determining that the replacement module does not fit in the site of the programmable IC occupied by the module to be replaced, or determining that all programmable resources required by the replacement module are not available, re-placing and re-routing a circuit design of the circuit while reserving space for the replacement module.