SystemVerilog and UVM Template Engine

Generate a unified verification methodology (UVM) component or a SystemVerilog DPI component from a MATLAB^® function. Use the new svdpiConfiguration object to specify the template to use for code generation. You can also set the properties of the object to override the default values in the template-variables. Then, use the dpigen function to generate your component.

Select a built-in template for common component kinds, or create your own custom template. For an example that uses this template engine, see Use Templates to Create SystemVerilog DPI and UVM Components.

Note

This feature requires the ASIC Testbench for HDL Verifier add-on.

General-Purpose Templates

HDL Verifier™ provides the following built-in templates:

• Combinational module — This template captures the inputs and outputs of a MATLAB function. Use it to create a combinational SystemVerilog module, with no clock or reset ports.

  It includes these variables:

  Override by setting properties in the svdpiConfiguration object.

  • ComponentTypeName

  • TestBenchTypeName

  Override by setting the TemplateDictionary property.

  • ComponentPackageTypeName

  

• Sequential module — This template captures the inputs and outputs of a MATLAB function. It also adds ports for clock, clock-enable, and reset signals. Use it when you have state in your function (such as persistent variables) to create a sequential, registered SystemVerilog module. For more information about persistent variables, see Persistent Variables.

  The sequential module template includes these variables:

  Override by setting properties in the svdpiConfiguration object.

  • ComponentTypeName

  • TestBenchTypeName

  Override by setting the TemplateDictionary property.

  • ComponentPackageTypeName

  

• Sequential module with variable-size outputs — This template is functionally the same as the sequential module template, but it has accommodations for variable-size ports. Use this template if one or more of the inputs or outputs to your function is defined as a variable-size vector. This template creates a SystemVerilog module with the respective port as a SystemVerilog open array ([ ]). This code shows the generated interface for a function named foo, declaring in1 and y as variable-size ports.

  module foo_dpi(
      input bit clk,
      input bit clk_enable,
      input bit reset,
      input real in1 [],
      output shortint y []
  );

  This template includes these variables:

  Override by setting properties in the svdpiConfiguration object.

  • ComponentTypeName

  • TestBenchTypeName

  Override by setting the TemplateDictionary property.

  • ComponentPackageTypeName

UVM Templates

These templates generate UVM components from MATLAB functions, which you can integrate into a full UVM testbench. This image shows the UVM testbench structure. You can generate the parts highlighted in green by using the UVM templates.

• Predictor component — This template generates a UVM predictor module. The module has an export that inputs a predictor transaction and an analysis port that outputs a scoreboard transaction.

  The predictor template includes these variables:

  Override by setting properties in the svdpiConfiguration object.

  • ComponentTypeName

  • TestBenchTypeName

  Override by setting the TemplateDictionary property.

  • ComponentPackageTypeName

  • InputTransTypeName

  • OutputTransTypeName

  You can optionally map ports to port groups by using the addPortGroup object function.

  • PREDICTOR_INPUTS

  • CONFIG_OBJECT_INPUTS

  

• Sequence component — This template generates a UVM sequence module. The module has an export that inputs a predictor transaction and an analysis port that outputs a scoreboard transaction.

  The sequence template includes these variables:

  Override by setting properties in the svdpiConfiguration object.

  • ComponentTypeName

  • TestBenchTypeName

  Override by setting the TemplateDictionary property.

  • ComponentPackageTypeName

  • SequenceTransTypeName

  • SequencerTypeName

  • SequenceCount

  • SequenceFlushCount

  You can optionally map ports to port groups by using the addPortGroup object function.

  • SEQUENCE_INPUTS

  • CONFIG_OBJECT_INPUTS

  

• Scoreboard component — This template generates a UVM scoreboard module and a scoreboard configuration object. The module has two exports that input a scoreboard transaction.

  The scoreboard template includes these variables:

  Override by setting properties in the svdpiConfiguration object.

  • ComponentTypeName

  • TestBenchTypeName

  Override by setting the TemplateDictionary property.

  • ComponentPackageTypeName

  • InputTransTypeName

  • OutputTransTypeName

  • ConfigObjTypeName

  Map ports to port groups by using the addPortGroup object function.

  • PREDICTOR_INPUTS

  • MONITOR_INPUTS

  • CONFIG_OBJECT_INPUTS

  

Testbench Templates

The dpigen function uses the testbench templates when it is invoked with the -testbench argument. The dpigen function simulates the MATLAB function and logs the inputs and outputs. The dpigen function then generates a SystemVerilog testbench module that instantiates the generated SystemVerilog component (DUT), drives the logged inputs to the DUT, and compares the DUT outputs against the logged outputs from the MATLAB simulation. This option assures that the generated SystemVerilog module is equivalent to the original MATLAB function.

The following built-in testbench templates are available:

• Combinational testbench

• Sequential testbench

• Sequential testbench with variable size outputs

• Predictor testbench

• Sequence testbench

• Scoreboard testbench