Expected values can be either golden reference values or generated from the. 3. md","path":"README. {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"README. pro_A [producer_A] Send value = 2 UVM_INFO testbench. d","path":"src/uvm/comps/package. The imp port then forwards the calls to the component that instantiates it. We would like to show you a description here but the site won’t allow us. Using do_print. A private religious school is suing the state of Vermont after being banned from taking part in all athletics run by the state because it forfeited a game against an. The UVM API (Application Programming Interface) provides. Analysis port (class uvm_tlm_analysis_port) — a specific type of transaction-level port that can be connected to zero, one, or many analysis exports and through which a component may call the method write implemented in another component, specifically a subscriber. 6. uvm-basics. each proxy is handling then one endpoint alone. UVM_INFO testbench. A UVM monitor is derived from uvm_monitor base class and should have the following functions : Collect bus or signal information through a virtual interface. Please use the list for emails relating to the general field of Ecology and Evolutionary Biology. The UVM configuration database accessed by the class uvm_config_db is a great way to pass different objects between multiple testbench components. 2 User’s Guide. As the name suggests, it keeps a track of the sequences that are registered with it, and calls them a number of times. 286 class transition_coverage_collector extends uvm_subscriber # (transaction); 287 `uvm_component_utils (transition_coverage_collector) 288In higher id, add_coverage class is defined and extended from uvm_subscriber class. Putting the origins aside, uvm_resource_db provides a easy way to share resources between various classes. The code below might not be syntactically right, and I intentionally leave the factory registration, new(), build() etc. The UVM monitor functionality should be limited to basic monitoring that is. 通用验证方法学 （英語： Universal Verification Methodology, UVM ）是一个以 SystemVerilog 类库 为主体的 验证平台 开发框架，验证工程师可以利用其可重用组件构建具有标准化层次结构和接口的 功能验证 环境。. class base_trans extends uvm. So UVM phases act as a synchronizing mechanism in the life cycle of a simulation. svh","path":"projects/ahb2_uvm_tb/ahb_env/ahb. {"payload":{"allShortcutsEnabled":false,"fileTree":{"tb/UVM/tb_classes":{"items":[{"name":"async_fifo_base_test. Users should not create any other instance of uvm_root !We have seen the scenario in TLM - Put, where data sent to componentB is executed using the put() method defined in B. The uvm_*_export classes are used to connect the uvm_*_imp of enclosed component to the enclosing component. Using wait_for_grant(), send_request(), wait_for_item_done() etc b. UVM experts can easily spend hours debugging analysis port issues if they are unaware of important considerations related to analysis port paths. UVM Tutorial for Candy Lovers – 23. This is blocking statement. I derived the coverage class from a uvm_subscriber; inside it I declared a covergroup meant to capture a reasonable range of values for address, data and transaction kind (WRITE or READ). For clarity, we defined the same enums as defined in SystemVerilog (lines 5 and 6). To actually start the test, a task called run_test is called from the initial block in your top-level module. uvm_object has many common functions like print, copy and compare that are available to all its child classes and can be used out of the box if UVM automation macros are used inside the class definition. `uvm_create (Item/Seq) This macro creates the item or sequence. The document covers the UVM 1. d","contentType":"file"},{"name":"uvm. A UVM monitor is derived from uvm_monitor base class and should have the following functions : Collect bus or signal information through a virtual interface. svh","contentType":"file. There are two kinds of SVA: immediate and concurrent assertion. The jelly-bean verification platform uses two kinds of configuration objects, jelly_bean_agent_config and jelly_bean_env_config. subscriber是消费，用户的意思 uvm_subscriber主要作为coverage的收集方式之一 uvm_subscriber的代码非常简单，继承于uvm_component，再加上一个analysis export而已。 其代码如下： virtual class uvm_subscribThe UVM configuration database accessed by the class uvm_config_db is a great way to pass different objects between multiple testbench components. The uvm_subscriber class provides an analysis export that connects with the analysis port. UVM Factory Override. 1 day ago · The special guests for this year's Royal Variety Performance will be the Prince and Princess of Wales and Crown Princess Victoria of Sweden and her husband Prince. My first series of UVM tutorials (#1 to #6) was posted more than three years ago. uvm_subscriber is an extension of uvm_component with a built-in. . Simple tutorials on the theory behind and the creation of the scoreboard are scarce. 3. 1d, an abstract uvm_event_base class does not exist. 2 FIX 12 kHz 52 mV. The paper shows simplified, non‐UVM, analysis port implementations to clarify howNext was the coverage class. Description. Note that we also have the option to randomize and send an item or sequence using `uvm_rand_send_*. e. What is uvm_component ? uvm_component is a fundamental base class that serves as the foundation for all UVM components like drivers, monitors and scoreboards in a verification environment. To prevent spam and Account deactivation, confirm the below information{"payload":{"allShortcutsEnabled":false,"fileTree":{"15_Talking_Objects/02_With_Analysis_Port":{"items":[{"name":"average. Usually, the REQ and RSP sequence item has the same class type. Consider an. 1. UVM automation macros can. Easier UVM Paper and Poster. The sequence_item(s) are provided by one uvm_sequence objects. This will trigger up the UVM testbench. The run_test() method call to construct the UVM environment root component and then initiates the UVM phasing mechanism. 0; TLM-2. 1. that means you cant use them twice in the same scope with the same argument. 8. government says 10 properties in Prince George should be forfeited for their alleged use in a years-long drug trafficking operation. This. It allows for generic containers of objects to be created, similar to a void pointer in the C programming language. UVM will never ask you to enter your UVM Net-ID and password on a non-UVM web page -- even if it looks like a UVM page, and even if it's on a reputable site, such as Google Docs, 123contactform. 1. class base_trans. Accellera’s recently released UVM may change the future of verification, as verification methodology seems to be consolidated in this UVM. This paper explains UVM analysis port usage and compares the functionality to subscriber satellite TV. {"payload":{"allShortcutsEnabled":false,"fileTree":{"21_UVM_Transactions/tb_classes":{"items":[{"name":"add_test. Analysis Port Multi Imp port. pyuvm is the Universal Verification Methodology implemented in Python instead of SystemVerilog. sv"It is not possible to "hook up the uvm_analysis_export to the write". Typically, coverage collectors are UVM subscribers that are connected to monitors. The driver will extract necessary information from the data packet and toggle DUT ports via the virtual interface handle. 2 Answers. {"payload":{"allShortcutsEnabled":false,"fileTree":{"src":{"items":[{"name":"tutorial_23","path":"src/tutorial_23","contentType":"directory"},{"name":"tutorial_24. Execute sequence items via start_item/finish_item or `uvm_do macros. The uvm_comparer adds up policy for the comparison and. write (), it basically cycles through. It is intended for verification engineers who want to use UVM 1. When a write operation is performed to the design, the. 2. This task either takes the test name as a string argument or more commonly, you specify the test name on the command line with UVM_TESTNAME. sv. The uvm_component are static and physical components that exist throughout the simulation. sv" endclass `include "clkndata_cover_inc_after. Note that you had spawned seq2 towards the end of seq1. // you may not use this file except in compliance with the License. Below is the definition for seq2, which inturn calls seq3 multiple times using the different variations of `uvm_send_*. static function void set (. uvm_object is the one of the base classes from where almost all UVM classes are derived. $12 per month or $120 per year; Subscribe for. Last Updated: April 4, 2014 Accellera’s recently released UVM may change the future of verification, as verification methodology seems to be consolidated in this UVM. UVM TB For Adder. Contains the code examples from The UVM Primer Book sorted by chapters. Minimal example with driver; Minimal example with coverage in a subscriber as well as driver and monitor. Message Logging. e. Depending on Agent type, create agent components in the build phase, driver and sequencer will be created only for the active agent. uvm_analysis_port 's are the publisher, they broadcast transactions. How to execute sequences via start ( ) virtual task start ( uvm_sequencer_base sequencer, uvm_sequence_base parent_sequence = null, int this_priority = -1, bit call_pre_post = 1 ); Note that you have to always pass the handle to a sequencer which should execute this sequence, whereas the other arguments are optional. This class provides an analysis export for receiving transactions from a connected analysis export. pro [producer] Send value = 0 UVM_INFO testbench. The broadcaster here is the analysis_port. Let’s call the record in our jelly bean scoreboard. Since registers are the leaf nodes in a digital system, depositing a new value in the middle of any design. class test extends uvm_test; bit flag; task run_phase (uvm_phase phase); //call register write task , data is chosen in a random fashion write (addr,data); flag = 1; // flag gives the time when the register is written. TLM Analysis TesetBench Components are, Implementing analysis port in comp_a. UVM is based on Open Verification Methodology (OVM) and Verification Methodology Manual (VVM). This guide is a way to apply the UVM 1. 19 // Author's intent: If you use this AXI verification code and find or fix bugsA tag already exists with the provided branch name. Also, we can instantiate as many covergroups as we may need. Overview. UVM. sv. 1 Answer. Agent. The compare method returns 1 if comparison matches for the current object when it is compared with the R. {"payload":{"allShortcutsEnabled":false,"fileTree":{"tb/agents/apb_mstr_agent":{"items":[{"name":"apb_agent_pkg. When the driver unpacks the data it received from the sequencer, and drives DUT signals, it also. 8. Easier UVM Paper and Poster. Message Logging. uvm_subscriber with analysis export . So we can take advantage of this and connect it with the pkt_mon analysis port. 6e. For testbench hierarchy, base class components are. class mem_scoreboard extends uvm_scoreboard; `uvm_component_utils (mem_scoreboard) // new - constructor function new (string name, uvm_component parent); super. T ransaction L evel M odeling, is a modeling style for building highly abstract models of components and systems. You are printing your coverage with verbosity UVM_HIGH. By using the uvm_component_utils () macro, the class is automatically registered with the UVM factory and can be dynamically created and configured at run-time. SystemVerilog’s functional coverage constructs allow you to quantify the completeness of your stimulus by recording the values that have occurred on your signals. {"payload":{"allShortcutsEnabled":false,"fileTree":{"15_Talking_Objects/02_With_Analysis_Port":{"items":[{"name":"average. r. con [consumer] PORT. The names of any interface template files are included on the command line. The utility macros help to register each object with the factory. This is usually used to configure the agent to be either active/passive. Code Revisions 1 Stars 1. All the signals listed as the module ports belong to APB specification. This can be useful for peak and off-peak times. This brings about. sv in "Linear PCM integrated example test bench" in the UVM Contributions section. The default implementations return 1, which allows the report to be processed. What is UVM ? UVM stands for U niversal V erification M ethodology. On calling `uvm_do () the above-defined 6 steps will be executed. 2 Class Reference, but is not the only way. These hook methods can be defined in derived classes to perform additional actions when reports are issued. Create a user-defined test class extended from uvm_test and register it in the factory. The Subscriber Text File you will upload to LISTSERV must be ordered “e-mail address, space, the subscriber’s first name, space, and the subscriber’s last name” For example: rcat@uvm. A sequencer generates data transactions as class objects and sends it to the Driver for execution. Learn how a UVM driver communicates with a UVM sequencer through this driver-sequencer handshake mechanism example. These are some of the most commonly used methods in uvm_reg_field. Let's start as before with the static implementation, that relies on a parameterizable class: class cov_collector #(type POLICY = cg_ignore_bins_policy) extends uvm_subscriber #(instruction); `uvm_component_param_utils(cov_collector. Instead, you need to derive from uvm_component, install a uvm_analysis_imp (an imp not an export) and write a write function. The new() function has two arguments as string name and uvm_component parent. 1. uvm_analysis_imp 's are the subscriber, they receive transactions and call a function named 'write' in the class in which they are defined. It includes the utility do_copy () and create (). abauserman / uvm_examples. pyuvm implements the most often-used parts of the UVM while taking advantage of the fact that Python does not have strict typing and does not require parameterized classes. You can generate a new sequence, which will be running on child_sequencer, but will take the sequence_items from generic_sequencer like below. subscribe to the analysis port which handles the receiving of the . The UVM application programming interface (API) defines a standard for the creation, integration, and extension of UVM Verification Components (UVCs) and verification environments that scale from block to system. Click to refresh the. UVM also allows backdoor accesses which uses a simulator database to directly access the signals within the DUT. response_transaction to allow the scoreboard component to . Collected data is exported via an analysis port. v","path":"mux. The UVM barrier provides multi-process synchronization that blocks a set of processes until the desired number of processes reaches a particular synchronizing point at which all the processes are released. `uvm_analysis_imp_decl(SFX) Define the class uvm_analysis_impSFX for providing an analysis implementation. Some insurers may go along with. Steps to create a UVM sequence. svh","contentType":"file. termination of the run() phase allows the rest of the UVM post-run() function phases to do their intended jobs and then to terminate gracefully. UVM Tutorial for Candy Lovers – 6. Subscribers are basically listeners of an analysis port. Step #2: put the interfaces in the database. the scoreboard will check the correctness of the DUT. For example: +UVM_TESTNAME=random_test. 其代码如下：. sv(30) @ 0: uvm_test_top. rst","path":"docs/source/comps/uvm_agent. . analysis_export" to the connect function and it works! We would like to show you a description here but the site won’t allow us. TESTBENCH. It would typically have functions and tasks to calculate the expected output for a particular input stimulus. // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. For additional information on using UVM, see the UVM User’s. Universal Verification Methodology UVM Introduction The Accellera Universal Verification Methodology (UVM) is a standard verification methodology that includes a set of class libraries for the development of a verification environment. An example of what. analysis port to receive broadcasted transactions. Change Your Major. I had indeed a look within the "Linear PCM integrated example test bench". {"payload":{"allShortcutsEnabled":false,"fileTree":{"tb/UVM/tb_classes":{"items":[{"name":"async_fifo_base_test. Since C does not know about the bit type of SystemVerilog, we replaced. svh" initial begin `uvm_info("ID","WELC. UVM factory is a mechanism to improve flexibility and scalability of the testbench by allowing the user to substitute an existing class object by any of its inherited child class objects. Config db settings requires type compatibility, when you use parameterized interface, same type should be used while setting the virtual interface in config db. Stay up to date with the Siemens Software news you need the most. It is recommended to extend uvm_sequencer base class since it contains all of the functionality required to allow a sequence to communicate with a driver. class COVERAGE extends uvm_subscriber #(PACKET);. 2. The UVM uses uvm_scoreboard to represent the component in the testbench that contains this database. This. The idea behind UVM is to enhance flexibility and reuse code so that the same testbench can be configured in different ways to build different components, and provide different stimulus. This task either takes the test name as a string argument or more commonly, you specify the test name on the command line with UVM_TESTNAME. What does UVM stand for? A Practical Guide to Adopting the Universal Verification Methodology (UVM – Hannibal Height – Google Books With. In the build_phase (), sequencer and driver are created only if the agent is configured to be active. But I already have the write function for the analysis port defined with _imp. A uvm_component does not have a built-in analysis port while a uvm_subscriber is an extended version with a built-in analysis implementation port named as analysis_export. {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"apb_uvm","path":"apb_uvm","contentType":"directory"},{"name":"compile","path":"compile. Please help better understand the ports. {"payload":{"allShortcutsEnabled":false,"fileTree":{"env":{"items":[{"name":"vsequences","path":"env/vsequences","contentType":"directory"},{"name":"ahb_coverage. The easiest way to create a subscriber list is in a spreadsheet. The UVM 1. We would like to show you a description here but the site won’t allow us. svh","path":"15_Talking_Objects/02_With. 1,119 13 13. It is an abstract class with no data members or functions. function void write(T t); //. `uvm_do macros will identify if the argument is a sequence or sequence_item and will call start () or start_item () accordingly. per add_coverage extends uvm_subscriber # (packet_c) The uvm_scoreboard is an extension of uvm component without adding capabilities. The record function of uvm_object calls the do_record. Since C does not know about the bit type of SystemVerilog, we replaced. One could code this manually, and one does to have multiple analysis_export objects in a single subscriber, such. We would like to show you a description here but the site won’t allow us. The typedef (the first line) of the jelly_bean_sb_subscriber provides a forward declaration for the. Implementing analysis imp_port’s in comp_b. The compare method returns 1 if comparison matches for the current object when it is compared with the R. 2/src/comps":{"items":[{"name":"uvm_agent. // my_sequence is user-given name for this class that has been derived from "uvm_sequence" class my_sequence extends uvm_sequence; // [Recommended] Makes this sequence reusable. Collected data can be used for protocol checking and coverage. One could code this manually, and one does to have multiple analysis_export objects in a single subscriber, such as a scoreboard. uvm_scoreboard 를 extend하고 application별로 compare동작은 user가 만들어야 한다. sv","path":"tb/agents/apb_mstr_agent/apb_agent_pkg. uvm_analysis_imp 's are the subscriber, they receive transactions and call a function named 'write' in the class in which they are defined. This is not a complete design since our purpose is simply to show how registers in this design can be read/written using a UVM register model. All we have needed to do to include the register layer in the generated code is to provide the file regmodel. A scoreboard determines if a DUT is functioning within parameters. In the jelly beans example, the jelly_bean_scoreboard encloses the jelly_bean_sb_subscriber (see Verification Components). // Step 1: Declare a new class that derives from "uvm_test" // my_test is user-given name for this class that has been derived from "uvm_test" class my_test extends uvm_test; // [Recommended] Makes this test more re. User should extend uvm_driver class to define driver component. 5. The monitor simply observes the transactions happening across the interface signals. pl can be anywhere: we are just locating it from the script using a relative path. get_inst_coverage (), t. User classes derived directly from uvm_void inherit none of the UVM functionality, but. sv and add a few lines to the template files. Please contact your insurer. Audience Question: Q: Why we use UVM? A: It makes it easier to create a powerful systemVerilog test bench. Analysis. It is automatically created when UVM is initialized and is available throughout the entire simulation. uvm_subscriber and subsequently the monitors use this Observer Design Pattern. Q: Did you put single quotes around the +uvm_set_severity option when passing to the tools? NOTE: If you have wrappers around your tools, this can be quite tricky as some wrappers make passing of special characters such as asterisk (*), question mark (?), etc. con [consumer] Port B: Received value = 0 UVM_INFO testbench. However, generally coverage is being sampled in uvm_subscriber and the reason is that, different designs may require different type of coverage bins and hence it is easy to plug that component and make your core code. They can be different if it. UVM Environment An environment provides a well-mannered hierarchy and container for agents, scoreboards, and other verification components including other environment classes that are helpful in reusing block-level environment components at the SoC level. class add_coverage extends uvm_subscriber # (packet_c) uvm_subscriber creates an analysis_export with the correct parameterized type and links it to the write() function. rst","path":"docs/source/comps/uvm_agent. Making such a connection “subscribes” this component to any transactions emitted by the connected analysis port. This post will provide a simple tutorial on this new verification methodology. The number of jelly beans being created is specified with the class property called num_jelly_beans. md","path":"README. UVM Tutorial for Candy Lovers – 28. We would like to show you a description here but the site won’t allow us. Ports shall be used to initiate and forward packets to the top layer of the hierarchy. It is optional, but unless it is specified, no recording takes place. An export is a waypoint; it can only be connected to another export or imp . UVMを使用したクラスファイル群は「Verilog Header」として表. John Aynsley (from Doulos) wrote a good paper about UVM that has a section that can help you out. This post will give an explanation on UVM configuration objects, since the earlier posts did not cover much on them. It extends uvm_subscriber and is parameterized to the . Share. Below block diagram shows where functional coverage class would typically fit in the big picture followed by functional coverage code. {"payload":{"allShortcutsEnabled":false,"fileTree":{"src/uvm/comps":{"items":[{"name":"package. All the signals listed as the module ports belong to APB specification. Making such a connection "subscribes" this component to any transactions emitted by the connected analysis port. Universal Verification Methodology UVM Introduction The Accellera Universal Verification Methodology (UVM) is a standard verification methodology that includes a set of class libraries for the development of a verification environment. We would like to show you a description here but the site won’t allow us. Declare driver, sequencer and monitor instance, 3. RSP sequence item is optional. comp_b [component_b] Printing trans, ----- Name Type Size Value ----- trans transaction - @209 addr integral 4 'he wr_rd integral 1 'h0 wdata integral 8 'h4 ----- UVM_INFO component_b. svh","path":"distrib/src/comps/uvm_agent. class child_seq extends uvm_sequence # (seq_item); generic_sequencer p_seqr; virtual task body (); // Get Sequence Item from Parent Sequencer. preview shows page 101 - 104 out of 183 pages. This is implemented in derived classes. 5. The print and sprint functions of uvm_object call the do_print. WWW. Overview. By inheriting from uvm_object , these classes inherit the essential functionalities and properties discussed above, making it a crucial building block for UVM verification. Below check diagram shows whereabouts functional coverage sort would typically fit inbound the big picture followed by functional reach code. Create a user-defined test class extended from uvm_test and register it in the factory. uvm_subscriber creates an analysis_export with the correct parameterized type and links it to the write() function. If you're familiar with SystemC, an imp port doesn't have a direct equivalent. Using get_next_item () uvm_driver is a child of uvm_component that has a TLM port to communicate with the sequencer. The typedef (the first line) of the jelly_bean_sb_subscriber provides a forward declaration for the. The uvm_resource#(type T) is a parameterized class that provides additional functions like read() and write() for resource operation. This doesn't have any purpose, but serves as the base class for all UVM classes. Verification of register behavior can include testing different access scenarios, checking field values after resets, verifying register side-effects, and more. this works even when you object do not derive from ovm_object. Configurations. Expect to hear news of Vermont-related research one to two times a month here. 1 library. The uvm_subscriber class provides an analysis export that connects with the analysis port. d","path":"src/uvm/comps/package. vm/uvm-subscriber より引用. Because phases are defined as callbacks, classes derived from uvm_component can perform useful work. 1) In uvm_scoreboard, we can define & initialize analysis_export to implement write function. md","contentType":"file"},{"name":"mux. There is an example in the UVM 1. The UVM 1. use the uvm_subscriber (essentially a component with a single port forwarding the call to the place you want) C) the *_decl macros the decl macros create a new class in the scope where you use the macros. The uvm_subscriber class only has a single analysis export. Analysis port (class uvm_tlm_analysis_port) — a specific type of transaction-level port that can be connected to zero, one, or many analysis exports and through which a. Multi Subscribers with Multiports. Download ZIP. env. It is an abstract class with no data members or functions. Implementation ports shall be used to define the put. Created 8 years ago. uvm_subscriber is an extension of uvm_component with a built-in analysis_export. — Vermont Subscriber Answer: The only way that a clean-up expense would be paid under the PAP is if the insurer considers that to be property damage as defined. For example, the instance of foo_agent_c is foo_agent. Analysis Export. d","contentType":"file"},{"name":"uvm. The paper explains how UVM can be integrated with SystemC using the UVM-ML Open Architecture, a framework that enables interoperability between different. Overview. e. ☐ Use analysis ports and analysis exports (or objects of class uvm_subscriber) when making one-to-many connections between UVM components. (uvm_monitor) clkndata_coverage (uvm_subscriber) ↳ top_default_seq (created in run_phase, class uvm_sequence) ↳ clkndata_default_seq (uvm_sequence. We defined a function called check_taste_in_c which takes the flavor, sour, and taste as arguments and returns 0 if the combination is as expected. g. log","contentType":"file"},{"name":"README. . Here are my answers to your questions. v. A request type is not required here because this sequencer is generic and not limited to handle only one particular data type. 1 library. static function void set (. It is intended for verification engineers who want to use UVM 1. Create a user-defined class inherited from uvm_sequence, register with factory and call new. class mem_scoreboard extends uvm_scoreboard; `uvm_component_utils (mem_scoreboard) // new - constructor function new (string name, uvm_component parent); super. . In simple terms it's a UVM sequencer that contain handles to other sequencers. So, the whole flow is as follows. ln uvm_subscriber the necessary arrangement of analysis eport and implementat¡on has already been coded, and it is only necessary for the user to overide the base class's rn'rite method in their class derived from ur¡m subscriber. class scoreboard extends uvm_component; `uvm_component_utils(scoreboard). A UVM Testbench for Analog Verification: A Programmable Filter Example Charles Dančak Betasoft Consulting, Inc. 要使用UVM的观察者模式，我们需要. In the build_phase (), sequencer and driver are created only if the agent is configured to be active. S. Implementing analysis imp_port’s in comp_b. You can sample your coverage data anywhere in your verification environment, including uvm_monitor or uvm_subscriber. get_inst_coverage (), t. sv(72) @ 0: uvm_test_top. The. Analysis Export. Using macros like `uvm_do , `uvm_create, `uvm_send etc; Using existing methods from the base class a. Uvm components, uvm env and uvm test are the three main building blocks of a testbench in uvm based verification. svh","path":"src/tutorial_32/agent. The run_test() method is required to call from the static part of the testbench. If you want to use the fifo path, you need to create and connect a generic port in the driver class. There are two primary functions used to put and retrieve items from the database which are set() and get() respectively. It is usually called in the initial block from the top-level testbench module. svh","path":"21_UVM_Transactions/tb_classes/add_test.