写一个简单HDMI uvm测试
时间: 2023-07-04 18:04:54 浏览: 169
以下是一个简单的HDMI UVM测试的代码示例:
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。