Dynamic model adaptation to interface protocols

Patent metadata

Field	Value
Publication number	US-10180994-B2
Application number	US-201313912117-A
Country	US
Kind code	B2
Filing date	Jun 6, 2013
Priority date	Jun 11, 2012
Publication date	Jan 15, 2019
Grant date	Jan 15, 2019

Abstract

A system and a method are disclosed for simulating a target system. The target system may include a plurality of components coupled via a communication bus. Each component of the target system may include a model algorithm representing the internal behavior of the component, and a model interface configured to transfer and/or receive communication payloads to/from a peer component in the target system. During simulation initialization, a simulation model of a component of the target system is accessed and a protocol engine, associated with a bus communication protocol is selected to be attached to the simulation model of the accessed component. Then, during the simulation of the target system, the model interface receives an incoming payload and informs the protocol engine of the received payload. The protocol engine may instruct the model algorithm of the component to perform a protocol specific action based on the received payload.

First claim

What is claimed is:

1. A computer-implemented method for simulating a target system, the method comprising:
accessing a first simulation model of a first component of the target system, the first simulation model including a portion representing an internal behavior of the first component, the first simulation model also including a model interface configured to transfer communication payloads with a second simulation model of a second component of the target system;
selecting a protocol engine that is adapted for a bus communication protocol and is independent of the first simulation model, the protocol engine configured to perform protocol specific actions corresponding to the bus communication protocol, and wherein the protocol engine is not specific to the first simulation model, the protocol engine selected from a protocol engine library comprising a plurality of protocol engines adapted for different bus communication protocols, wherein the protocol specific actions include augmenting an outgoing payload with protocol specific attributes; and
executing a simulation of the target system by:
receiving, by the model interface of the first simulation model, an incoming communication payload,
informing, by the model interface of the first simulation model, the protocol engine that is independent of the first simulation model of the incoming communication payload received by the model interface of the first simulation model, and
instructing, by the protocol engine that is independent of the first simulation model and responsive to being informed of the incoming communication payload, the portion of the first simulation model representing an internal behavior of the first component to perform an action in accordance with the bus communication protocol based on the incoming communication payload.

2. The method of claim 1 , wherein the model interface is configured to transfer the communication payloads with the second simulation model of the second component of the target system via a standardized transaction level modeling (TLM) application programming interface (API), and wherein the incoming communication payload is received at the model interface of the first simulation model via the standardized TLM API.

3. The method of claim 1 , further comprising:
accessing, by the protocol engine, a state of the first simulation model,
wherein the portion of the first simulation model representing the internal behavior is instructed, by the protocol engine, to perform the action based on the state of the first simulation model.

4. The method of claim 3 , wherein the action comprises allocating a buffer in accordance with the bus communication protocol.

5. The method of claim 1 , further comprising:
generating, by the protocol engine, a return payload in accordance with the bus communication protocol; and
transmitting, by the model interface of the first simulation model, the return payload to the second simulation model of the second component of the target system.

6. The method of claim 5 , wherein the return payload is generated to include one or more protocol specific attributes that are specific to the bus communication protocol.

7. The method of claim 6 , wherein the protocol specific attributes are included in the return payload as extensions to a standard payload.

8. The method of claim 1 , wherein the protocol engine is configured to perform protocol specific actions corresponding to one of an advanced extensible interface (AXI) protocol or an advanced high-performance bus (AHB) protocol.

9. The method of claim 1 , wherein the target system is a system on chip (SoC) and the first simulation model is a simulation model of a component of the (SoC).

10. The method of claim 1 , wherein the incoming communication payload comprises at least one of data being transferred from the second simulation model of the second component to the first simulation model of the first component or an address for data transfer.

11. A non-transitory computer readable medium configured to store instructions for simulating a target system, the instructions when executed by a processor cause the processor to:
access a first simulation model of a first component of the target system, the first simulation model including a portion representing an internal behavior of the first component, the first simulation model also including a model interface configured to transfer communication payloads with a second simulation model of a second component of the target system;
select a protocol engine that is adapted for a bus communication protocol and is independent of the first simulation model, the protocol engine configured to perform protocol specific actions corresponding to the bus communication protocol, and wherein the protocol engine is not specific to the first simulation model, the protocol engine selected from a protocol engine library comprising a plurality of protocol engines adapted for different bus communication protocols, wherein the protocol specific actions include augmenting an outgoing payload with protocol specific attributes; and
execute a simulation of the target system by:
receiving, by the model interface of the first simulation model, an incoming communication payload,
informing, by the model interface of the first simulation model, the protocol engine that is independent of the first simulation model of the incoming communication payload received by the model interface of the first simulation model, and
instructing, by the protocol engine that is independent of the first simulation model and responsive to being informed of the incoming communication payload, the portion of the first simulation model representing an internal behavior of the first component to perform an action in accordance with the bus communication protocol based on the incoming communication payload.

12. The computer readable medium of claim 11 , wherein the model interface is configured to transfer the communication payloads with the second simulation model of the second component of the target system via a standardized transaction level modeling (TLM) application programming interface (API), and wherein the incoming communication payload is received at the model interface of the first simulation model via the standardized TLM API.

13. The computer readable medium of claim 11 , further comprising instructions that cause the processor to
access, by the protocol engine, a state of the first simulation model,
wherein the portion of the first simulation model representing the internal behavior is instructed to perform the action based on the state of the first simulation model.

14. The computer readable medium of claim 13 , wherein the action comprises allocating a buffer in accordance with the bus communication protocol.

15. The computer readable medium of claim 11 , further comprising instructions that cause the processor to
generate, by the protocol engine, a return payload in accordance with the bus communication protocol; and
transmit, by the model interface of the first simulation model, the return payload to the second simulation model of the second component of the target system.

16. The computer readable medium of claim 15 , wherein the return payload is generated to include one or more protocol specific attributes that are specific to the bus communication protocol.

17. The computer readable medium of claim 16 , wherein the protocol specific attributes are included in the return payload as extensions to a standard payload.

18. The computer readable medium of claim 11 , wherei

Assignees

• Synopsys Inc

Inventors

• Garg Amit

Classifications

• G06F30/20 Primary

  Design optimisation, verification or simulation (optimisation, verification or simulation of circuit designs G06F30/30) · CPC title

• G06F2111/20

  Configuration CAD, e.g. designing by assembling or positioning modules selected from libraries of predesigned modules · CPC title

• G06F17/5009 Primary

  Physics · mapped topic