写一个简单HDMI uvm测试

以下是一个简单的HDMI UVM测试的代码示例： ```systemverilog module tb; import uvm_pkg::*; // Create the top-level testbench component class tb extends uvm_test; `uvm_component_utils(tb) // Declare the DUT agent and driver hdmi_agent agent; hdmi_driver driver; // Constructor function new(string name, uvm_component parent); super.new(name, parent); endfunction // Build the test environment virtual function void build_phase(uvm_phase phase); // Create the agent and driver instances agent = hdmi_agent::type_id::create("agent", this); driver = hdmi_driver::type_id::create("driver", this); // Connect the driver to the agent's analysis port agent.analysis_port.connect(driver.analysis_export); endfunction // Run the test virtual task run_phase(uvm_phase phase); // Start the driver driver.start(); // Wait for the driver to finish @(driver.done); // Stop the driver driver.stop(); endtask endclass // Create the HDMI agent component class hdmi_agent extends uvm_agent; `uvm_component_utils(hdmi_agent) // Declare the analysis port uvm_analysis_port#(hdmi_packet) analysis_port; // Constructor function new(string name, uvm_component parent); super.new(name, parent); endfunction // Build the agent virtual function void build_phase(uvm_phase phase); // Create the monitor and sequencer instances hdmi_monitor monitor = hdmi_monitor::type_id::create("monitor", this); hdmi_sequencer sequencer = hdmi_sequencer::type_id::create("sequencer", this); // Connect the sequencer to the monitor's analysis port sequencer.analysis_port.connect(monitor.analysis_export); // Create the driver instance hdmi_driver driver = hdmi_driver::type_id::create("driver", this); // Connect the sequencer to the driver's sequencer port driver.sequencer_port.connect(sequencer.seq_item_export); endfunction endclass // Create the HDMI monitor component class hdmi_monitor extends uvm_monitor; `uvm_component_utils(hdmi_monitor) // Declare the analysis port uvm_analysis_port#(hdmi_packet) analysis_port; // Constructor function new(string name, uvm_component parent); super.new(name, parent); endfunction // Monitor the HDMI bus virtual task run_phase(uvm_phase phase); forever begin hdmi_packet packet; // Monitor the bus and collect data // ... // Send the collected data to the analysis port analysis_port.write(packet); end endtask endclass // Create the HDMI sequencer component class hdmi_sequencer extends uvm_sequencer #(hdmi_packet); `uvm_component_utils(hdmi_sequencer) // Constructor function new(string name, uvm_component parent); super.new(name, parent); endfunction endclass // Create the HDMI packet class class hdmi_packet; // Define the packet fields // ... endclass // Create the HDMI driver component class hdmi_driver extends uvm_driver #(hdmi_packet); `uvm_component_utils(hdmi_driver) // Declare the analysis export uvm_analysis_export#(hdmi_packet) analysis_export; // Constructor function new(string name, uvm_component parent); super.new(name, parent); endfunction // Start the driver virtual task run_phase(uvm_phase phase); // Generate and send packets // ... // Send the generated packets to the analysis port analysis_export.write(packet); endtask endclass endmodule ``` 这个测试环境包括一个顶层的测试组件`tb`，一个HDMI代理组件`hdmi_agent`，一个HDMI监视器组件`hdmi_monitor`，一个HDMI序列器组件`hdmi_sequencer`，以及一个HDMI驱动组件`hdmi_driver`。在测试运行期间，驱动程序将生成HDMI数据包，并将其发送到代理分量。代理分量将监视HDMI总线上的数据包并将其传递到分析端口。同时，监视器组件也会监视HDMI总线上的数据包并将其传递到分析端口。序列器组件将协调驱动程序和监视器组件之间的通信，并生成HDMI数据包序列。在测试结束时，测试组件将停止驱动程序并完成测试。