Class: OrigenSim::Simulator

Inherits:
Object
  • Object
show all
Includes:
Origen::PersistentCallbacks, Artifacts
Defined in:
lib/origen_sim/simulator.rb,
lib/origen_sim/simulator/user_details.rb,
lib/origen_sim/simulator/snapshot_details.rb

Overview

Responsible for managing and communicating with the simulator process, a single instance of this class is instantiated as OrigenSim.simulator

Defined Under Namespace

Classes: SnapshotDetails, UserDetails

Constant Summary collapse

VENDORS = 
[:icarus, :cadence, :synopsys, :generic]
LOG_CODES = 
{ debug: 0, info: 1, warn: 2, warning: 2, success: 3, error: 4, deprecate: 5, deprecated: 5 }
LOG_CODES_ = 
{ 0 => :debug, 1 => :info, 2 => :warn, 3 => :success, 4 => :error, 5 => :deprecated }
LOGGER_COLLATERAL_SIZE =

Sending logs over VPI has a maximum size, some of which are collateral, leaving the difference for the actual message.

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MULTIPART_LOGGER_TOKEN = 
'!k+!'
NON_DATA_CONFIG_ATTRIBUTES =

These config attributes are accepted by OrigenSim, but cannot be ‘Marshal-ed’.

[:post_process_run_cmd]
TIMESCALES = 
{ -15 => '1fs',
 -14 => '10fs',
 -13 => '100fs',
 -12 => '1ps',
 -11 => '10ps',
 -10 => '100ps',
 -9  => '1ns',
 -8  => '10ns',
 -7  => '100ns',
 -6  => '1us',
 -5  => '10us',
 -4  => '100us',
 -3  => '1ms',
 -2  => '10ms',
 -1  => '100ms',
 0   => '1s',
 1   => '10s',
 2   => '100s'
}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Simulator

Returns a new instance of Simulator.



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# File 'lib/origen_sim/simulator.rb', line 57

def initialize
  @simulations = []
  @simulation_open = false
end

Instance Attribute Details

#configuration ⇒ Object (readonly) Also known as: config

Returns the value of attribute configuration.



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# File 'lib/origen_sim/simulator.rb', line 46

def configuration
  @configuration
end

#pins_by_rtl_name ⇒ Object (readonly)

Returns a hash of pins where the key is the RTL name, used to quickly retrieve the pin object from the pin name returned by the simulator



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# File 'lib/origen_sim/simulator.rb', line 55

def pins_by_rtl_name
  @pins_by_rtl_name
end

#simulation ⇒ Object (readonly)

The instance of OrigenSim::Simulation for the current simulation



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# File 'lib/origen_sim/simulator.rb', line 49

def simulation
  @simulation
end

#simulations ⇒ Object (readonly)

Returns an array containing all instances of OrigenSim::Simulation that were created in the order that they were created



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# File 'lib/origen_sim/simulator.rb', line 52

def simulations
  @simulations
end

Instance Method Details

#_snapshot_details ⇒ Object

Add the following methods to the simulator ###



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# File 'lib/origen_sim/simulator/snapshot_details.rb', line 43

def _snapshot_details
  @_snapshot_details ||= SnapshotDetails.new(simulator: self, **@configuration[:snapshot_details_options])
end

#artifact_populate_method ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 227

def artifact_populate_method
  @configuration[:artifact_populate_method] || begin
    if Origen.running_on_windows?
      :copy
    else
      :symlink
    end
  end
end

#artifact_run_dir ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 218

def artifact_run_dir
  p = Pathname(@configuration[:artifact_run_dir] || './application/artifacts')
  if p.absolute?
    p
  else
    Pathname(run_dir).join(p)
  end
end

#before_pattern(name) ⇒ Object Also known as: setup_simulation

Called before every pattern is generated, but we only use it the first time it is called to kick off the simulator process if the current tester is an OrigenSim::Tester



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# File 'lib/origen_sim/simulator.rb', line 704

def before_pattern(name)
  if simulation_tester?
    if OrigenSim.flow || !simulation
      # When running patterns back-to-back, only want to launch the simulator the first time
      start unless simulation
    else
      simulation.completed_cleanly = true
      stop
      start
    end
    # Set the current pattern name in the simulation
    name = name.sub(/\..*/, '')
    put("a^#{name}")
    log '#' * 100
    log '#' * 100
    log '##'
    log "##     START OF PATTERN: #{name}"
    log '##'
    log '#' * 100
    log '#' * 100
    @running_pattern_name = name
    @pattern_starting_error_count = @pattern_starting_error_count ? error_count : 0
    @pattern_count ||= 0
    # If running a flow, give the user some feedback about pass/fail status after
    # each individual pattern has completed
    if @pattern_count > 0 && OrigenSim.flow
      simulation.error_count = error_count
      simulation.log_results(true)
      # Require each pattern to set this upon successful completion
      simulation.completed_cleanly = false unless @flow_running
    end
    @pattern_count += 1
  end
end

#commit_simulation_objects(options = {}) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 128

def commit_simulation_objects(options = {})
  sid = options[:id] || id
  ldir = "#{Origen.root}/simulation/#{sid}"
  tmp_dir = "#{Origen.root}/tmp/origen_sim/tmp"
  unless File.exist?(ldir)
    fail "The simulation directory to check in does not exist: #{ldir}"
  end
  Dir.chdir "#{Origen.root}/simulation/" do
    system "tar -cvzf #{sid}.tar.gz #{sid}"
  end

  FileUtils.rm_rf(tmp_dir) if File.exist?(tmp_dir)
  FileUtils.mkdir_p(tmp_dir)
  FileUtils.cp "#{ldir}.tar.gz", tmp_dir

  rc = Origen::RevisionControl.new remote: config[:rc_dir_url], local: tmp_dir
  rc.checkin "#{sid}.tar.gz", unmanaged: true, force: true, comment: 'Checked in via sim:rc command'
ensure
  FileUtils.rm_f "#{ldir}.tar.gz" if File.exist?("#{ldir}.tar.gz")
  FileUtils.rm_rf tmp_dir if File.exist?(tmp_dir)
end

#compiled_dir ⇒ Object

Returns the directory where the compiled simulation object lives, this should be checked into your Origen app’s repository



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# File 'lib/origen_sim/simulator.rb', line 254

def compiled_dir
  @compiled_dir ||= begin
    d = "#{Origen.root}/simulation/#{id}/#{config[:vendor]}"
    FileUtils.mkdir_p(d)
    d
  end
end

#config_changed? ⇒ Boolean

Returns true if the config has been changed since the last time we called save_config_signature

Returns:

  • (Boolean) 


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# File 'lib/origen_sim/simulator.rb', line 1081

def config_changed?
  Origen.app.session.origen_sim["#{id}_config"] != config.except(*NON_DATA_CONFIG_ATTRIBUTES)
end

#configure(options, &block) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 150

def configure(options, &block)
  fail 'A vendor must be supplied, e.g. OrigenSim::Tester.new(vendor: :icarus)' unless options[:vendor]
  unless VENDORS.include?(options[:vendor])
    fail "Unknown vendor #{options[:vendor]}, valid values are: #{VENDORS.map { |v| ':' + v.to_s }.join(', ')}"
  end
  @configuration = {
    snapshot_details_options: {},

    # The maximum message size the VPI can accept.
    # Have this as a configuration parameter since this is VPI-implementation specific.
    max_log_size:             1024
  }.merge(options)
  @tmp_dir = nil

  # Temporary workaround for bug in componentable, which is making the container a class object, instead of an
  # instance object.
  clear_artifacts

  # Add any artifacts in the given artifact path
  if Dir.exist?(default_artifact_dir)
    default_artifact_dir.children.each { |a| artifact(a.basename.to_s, target: a) }
  end

  # Add any artifacts from the target-specific path (simulation/<target>/artifacts). Files of the same name
  # will override artifacts residing in the default directory.
  if Dir.exist?(target_artifact_dir)
    target_artifact_dir.children.each do |a|
      remove_artifact(a.basename.to_s) if has_artifact?(a.basename.to_s)
      add_artifact(a.basename.to_s, target: a)
    end
  end

  # If a user artifact path was given, add those artifacts as well, overriding any of the default and target artifacts
  if user_artifact_dirs?
    user_artifact_dirs.each do |d|
      if Dir.exist?(d)
        # Add any artifacts from any user-given paths. Files of the same name will override artifacts residing in the default directory.
        d.children.each do |a|
          remove_artifact(a.basename.to_s) if has_artifact?(a.basename.to_s)
          add_artifact(a.basename.to_s, target: a)
        end
      else
        Origen.app.fail! message: "Simulator configuration specified a user artifact dir at #{d} but this directory could not be found!"
      end
    end
  end

  self
end

#cycle(number_of_cycles) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 852

def cycle(number_of_cycles)
  put("3^#{number_of_cycles}")
  simulation.cycle(number_of_cycles)
end

#cycle_count ⇒ Object

Returns the simulator cycle count, this should be the same as tester.cycle_count but this gives the simulators count instead of Origen’s



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# File 'lib/origen_sim/simulator.rb', line 1194

def cycle_count
  put('o^')
  get.strip.to_i
end

#default_artifact_dir ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 200

def default_artifact_dir
  # Removed this from a constant at the top of the file since it gave boot errors when the file was
  # being required while Origen.app was still loading
  Pathname("#{Origen.app.root}/simulation/application/artifacts")
end

#define_pins ⇒ Object

Tells the simulator about the pins in the current device so that it can set up internal handles to efficiently access them



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# File 'lib/origen_sim/simulator.rb', line 808

def define_pins
  @pins_by_rtl_name = {}
  dut.rtl_pins(type: :digital).each_with_index do |(name, pin), i|
    @pins_by_rtl_name[pin.rtl_name] = pin
    pin.simulation_index = i
    put("0^#{pin.rtl_name}^#{i}^#{pin.drive_wave.index}^#{pin.compare_wave.index}")
  end
  dut.rtl_pins.each do |name, pin|
    pin.apply_force
  end
end

#define_waves ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 835

def define_waves
  dut.timeset.drive_waves.each_with_index do |wave, i|
    put("6^#{i}^0^#{wave_to_str(wave)}")
  end
  dut.timeset.compare_waves.each_with_index do |wave, i|
    put("6^#{i}^1^#{wave_to_str(wave)}")
  end
end

#dut_version ⇒ Object

Returns the version of Origen Sim that the current DUT object was compiled with



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# File 'lib/origen_sim/simulator.rb', line 1092

def dut_version
  @dut_version ||= begin
    # Allow configs to force a dut version, this is to allow backwards compatibility with very early
    # compiled duts which do not support the command to get it from the compiled object
    config[:dut_version] || begin
      put('i^')
      Origen::VersionString.new(get.strip)
    end
  end
end

#end_simulation ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 844

def end_simulation
  put('8^')
end

#error(message) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 895

def error(message)
  simulation.logged_errors = true
  poke "#{testbench_top}.debug.errors", error_count + 1
  log message, :error
end

#error_count ⇒ Object

Returns the current simulation error count



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# File 'lib/origen_sim/simulator.rb', line 902

def error_count
  peek("#{testbench_top}.debug.errors").to_i
end

#fetch_simulation_objects(options = {}) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 89

def fetch_simulation_objects(options = {})
  sid = options[:id] || id
  ldir = "#{Origen.root}/simulation/#{sid}"
  tmp_dir = "#{Origen.root}/tmp/origen_sim/tmp"
  if config[:rc_dir_url]
    unless config[:rc_version]
      puts "You must supply an :rc_version option when using :rc_dir_url (you can set this to something like 'Trunk' or 'master' if you want)"
      exit 1
    end
    if !File.exist?(compiled_dir) ||
       (File.exist?(compiled_dir) && Dir.entries(compiled_dir).size <= 2) ||
       (Origen.app.session.origen_sim[sid] != config[:rc_version]) ||
       options[:force]
      Origen.log.info "Fetching the simulation object for #{sid}..."
      Origen.app.session.origen_sim[sid] = nil # Clear this up front, if the checkout fails we won't know what we have
      FileUtils.rm_rf(tmp_dir) if File.exist?(tmp_dir)
      FileUtils.mkdir_p(tmp_dir)
      FileUtils.mkdir_p("#{Origen.root}/simulation")
      rc = Origen::RevisionControl.new remote: config[:rc_dir_url], local: tmp_dir
      rc.checkout "#{sid}.tar.gz", force: true, version: config[:rc_version]
      FileUtils.mv "#{tmp_dir}/#{sid}.tar.gz", "#{Origen.root}/simulation"
      FileUtils.rm_rf(ldir) if File.exist?(ldir)
      Dir.chdir "#{Origen.root}/simulation/" do
        system "tar -xvf #{sid}.tar.gz"
      end
      Origen.app.session.origen_sim[sid] = config[:rc_version]
    end
  else
    if !File.exist?(compiled_dir) ||
       (File.exist?(compiled_dir) && Dir.entries(compiled_dir).size <= 2)
      puts "There is no previously compiled simulation object in: #{compiled_dir}"
      exit 1
    end
  end
ensure
  FileUtils.rm_f "#{ldir}.tar.gz" if File.exist?("#{ldir}.tar.gz")
  FileUtils.rm_rf tmp_dir if File.exist?(tmp_dir)
end

#flush(options = {}) ⇒ Object

Flush any buffered simulation output, this should cause live wave viewers to reflect the latest state.



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# File 'lib/origen_sim/simulator.rb', line 869

def flush(options = {})
  if dut_version > '0.12.0'
    sync_up
    put('j^')
    sync_up
    # By now, the simulator has generated all log output up to this point and flushed it out,
    # however it may not be in the Origen log output yet because the main Origen thread has not
    # given the stdout/err reader threads a chance to process it.
    # This will now sleep the main Origen thread to allow that to get a chance to happen and we
    # will proceed once it has been > 100ms since a log message was processed, at that point we
    # can safely assume that they are all done and nothing is left in the buffer.
    w = false
    while !w || simulation.time_since_last_log < 0.1
      w = true
      sleep 0.1
    end
    # Finally, make sure the messages are not now sitting in an IO buffer
    Origen.log.flush
    nil  # Keep the console clean if this is called interactively
  else
    unless options[:quiet]
      OrigenSim.error "Use of flush requires a DUT model compiled with OrigenSim version > 0.12.0, the current dut was compiled with #{dut_version}"
    end
  end
end

#force(net, value) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 966

def force(net, value)
  sync_up
  if dut_version > '0.19.0'
    if value.is_a?(Integer)
      put("r^#{clean(net)}^i^#{value}")
    else
      put("r^#{clean(net)}^f^#{value}")
    end
  else
    OrigenSim.error 'Your DUT needs to be recompiled with OrigenSim >= 0.20.0 to support forcing, force not applied!'
  end
end

#generic_run_cmd ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 81

def generic_run_cmd
  config[:generic_run_cmd]
end

#get ⇒ Object

Get a message from the simulator, will block until one is received



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# File 'lib/origen_sim/simulator.rb', line 678

def get
  simulation.socket.readline
end

#id ⇒ Object

The ID assigned to the current simulation target, falls back to to the Origen target name if an :id option is not supplied when instantiating the tester



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# File 'lib/origen_sim/simulator.rb', line 240

def id
  config[:id] || Origen.target.name
end

#interactive_shutdown ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 988

def interactive_shutdown
  @interactive_mode = true
end

#log(msg, type = :info, multipart: false) ⇒ Object

Any messages passed in here will be output to the console log by making a round trip through the simulator. This ensures that the given log messages will be in sync with output from the simulator rather than potentially being ahead of the simulator if Origen were to output them immediately.



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# File 'lib/origen_sim/simulator.rb', line 777

def log(msg, type = :info, multipart: false)
  if dut_version > '0.15.0'
    put("k^#{LOG_CODES[type]}^#{msg}")
  else
    Origen.log.send(type, msg)
  end
end

#log_messages=(val) ⇒ Object

When set to true the simulator will log all messages it receives, note that this must be run in conjunction with -d supplied to the Origen command to actually see the messages



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# File 'lib/origen_sim/simulator.rb', line 65

def log_messages=(val)
  if val
    put('d^1')
  else
    put('d^0')
  end
end

#marker=(val) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 1169

def marker=(val)
  poke("#{testbench_top}.debug.marker", val)
end

#match_errors ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 1143

def match_errors
  if dut_version > '0.15.0'
    peek("#{testbench_top}.debug.match_errors").to_i
  else
    peek("#{testbench_top}.pins.match_errors").to_i
  end
end

#match_loop ⇒ Object

Any vectors executed within the given block will increment the match_errors counter rather than the errors counter. The match_errors counter will be returned to 0 at the end.



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# File 'lib/origen_sim/simulator.rb', line 1130

def match_loop
  if dut_version > '0.15.0'
    put('q^1')
    yield
    put('q^0')
  else
    poke("#{testbench_top}.pins.match_loop", 1)
    yield
    poke("#{testbench_top}.pins.match_loop", 0)
    poke("#{testbench_top}.pins.match_errors", 0)
  end
end

#max_errors ⇒ Object

Returns the number of errors that are allowed before a aborting a simulation



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# File 'lib/origen_sim/simulator.rb', line 1165

def max_errors
  OrigenSim.max_errors || config[:max_errors] || 100
end

#on_flow_end(options) ⇒ Object

At the end of a test program flow generation/simulation



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# File 'lib/origen_sim/simulator.rb', line 693

def on_flow_end(options)
  if simulation_tester? && options[:top_level]
    @flow_running = false
    simulation.completed_cleanly = true
    stop
  end
end

#on_flow_start(options) ⇒ Object

At the start of a test program flow generation/simulation



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# File 'lib/origen_sim/simulator.rb', line 683

def on_flow_start(options)
  if simulation_tester? && options[:top_level]
    @flow_running = true
    OrigenSim.flow = Origen.interface.flow.name
    start
    @pattern_count = 0
  end
end

#on_origen_shutdown ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 1009

def on_origen_shutdown
  unless simulations.empty?
    failed = false
    stop if simulation_open?
    unless @interactive_mode
      if simulations.size == 1
        failed = simulation.failed?
      else
        failed_simulation_count = simulations.count(&:failed?)
        if failed_simulation_count > 0
          Origen.log.error "#{failed_simulation_count} of #{simulations.size} simulations failed!"
          failed = true
        end
      end
      if failed
        Origen.app.stats.report_fail
      else
        Origen.app.stats.report_pass
      end
    end
    puts
    puts 'The following log files have been created:'
    puts
    simulations.each do |simulation|
      simulation.log_files.each do |f|
        puts "  #{f}"
      end
    end
    puts
    if simulations.size == 1
      puts 'To view the simulation run the following command:'
      puts
      puts "  #{simulation.view_wave_command}"
    else
      puts 'To view the simulations run the following commands:'
      puts
      simulations.each do |simulation|
        if simulation.failed?
          puts "  #{simulation.view_wave_command}".red
        else
          puts "  #{simulation.view_wave_command}"
        end
      end
    end
    puts
    unless @interactive_mode
      failed ? exit(1) : exit(0)
    end
  end
end

#on_timeset_changed ⇒ Object

This will be called automatically whenever tester.set_timeset has been called



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# File 'lib/origen_sim/simulator.rb', line 795

def on_timeset_changed
  # Important that this is done first, since it is used to clear the pin
  # and wave definitions in the bridge
  set_period(dut.current_timeset_period)
  # Clear pins and waves
  define_pins
  define_waves
  # Apply the pin reset values / re-apply the existing states
  put_all_pin_states
end

#pattern_generated(path) ⇒ Object Also known as: complete_simulation

This will be called at the end of every pattern, make sure the simulator is not running behind before potentially moving onto another pattern



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# File 'lib/origen_sim/simulator.rb', line 743

def pattern_generated(path)
  if simulation_tester?
    sync_up
    log '#' * 100
    log '#' * 100
    log '##'
    log "##     END OF PATTERN: #{@running_pattern_name}"
    log "##             Errors: #{error_count - @pattern_starting_error_count}"
    log '##'
    log '#' * 100
    log '#' * 100
    simulation.completed_cleanly = true unless @flow_running
    # Ensure that everything is flushed to the log before it is closed
    flush quiet: true
  end
end

#peek(net, real = false) ⇒ Object

Returns the current value of the given net, or nil if the given path does not resolve to a valid node

The value is returned as an instance of Origen::Value



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# File 'lib/origen_sim/simulator.rb', line 910

def peek(net, real = false)
  sync_up
  if dut_version > '0.19.0'
    if real
      put("9^#{clean(net)}^f")
      m = get.strip
      if m == 'FAIL'
        return nil
      else
        m.to_f
      end
    else
      put("9^#{clean(net)}^i")
      m = get.strip

      if m == 'FAIL'
        Origen.log.warning "Peek of net #{net} failed to return any data!"
        return nil
      else
        Origen::Value.new('b' + m)
      end
    end
  else
    put("9^#{clean(net)}")
    m = get.strip

    if m == 'FAIL'
      Origen.log.warning "Peek of net #{net} failed to return any data!"
      return nil
    else
      Origen::Value.new('b' + m)
    end
  end
end

#peek_real(net) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 945

def peek_real(net)
  peek(net, true)
end

#peek_str(signal) ⇒ Object Also known as: str_peek, peek_string, string_peek 



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# File 'lib/origen_sim/simulator.rb', line 1151

def peek_str(signal)
  val = peek(signal)
  unless val.nil?
    # All zeros seems to be what an empty string is returned from the VPI,
    # Otherwise, break the string up into 8-bit chunks and decode the ASCII>
    val = (val.to_s == 'b00000000' ? '' : val.to_s[1..-1].scan(/.{1,8}/).collect { |char| char.to_i(2).chr }.join)
  end
  val
end

#poke(net, value) ⇒ Object

Forces the given value to the given net. Note that no error checking is done and no error will be communicated if an illegal net is supplied. The user should follow up with a peek if they want to verify that the poke was applied.



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# File 'lib/origen_sim/simulator.rb', line 953

def poke(net, value)
  sync_up
  if dut_version > '0.19.0'
    if value.is_a?(Integer)
      put("b^#{clean(net)}^i^#{value}")
    else
      put("b^#{clean(net)}^f^#{value}")
    end
  else
    put("b^#{clean(net)}^#{value}")
  end
end

#post_process_run_cmd ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 85

def post_process_run_cmd
  config[:post_process_run_cmd]
end

#put(msg) ⇒ Object

Send the given message string to the simulator



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# File 'lib/origen_sim/simulator.rb', line 662

def put(msg)
  simulation.socket.write(msg + "\n")
rescue Errno::EPIPE => e
  # :from_origen_sim is added here to ensure this goes straight to the Origen console logger
  # and does not get sent via the simulator since it is clearly having problems
  if simulation.running?
    Origen.log.error 'Communication with the simulator has been lost (though it seems to still be running)!', from_origen_sim: true
  else
    Origen.log.error 'The simulator has stopped unexpectedly!', from_origen_sim: true
  end
  sleep 2 # To make sure that any log output from the simulator is captured before we pull the plug
  exit 1
end

#put_all_pin_states ⇒ Object

Applies the current state of all pins to the simulation



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# File 'lib/origen_sim/simulator.rb', line 786

def put_all_pin_states
  dut.rtl_pins.each do |name, pin|
    pin.reset_simulator_state
    pin.update_simulation
  end
end

#release(net) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 979

def release(net)
  sync_up
  if dut_version > '0.19.0'
    put("s^#{clean(net)}")
  else
    OrigenSim.error 'Your DUT needs to be recompiled with OrigenSim >= 0.20.0 to support releasing, force not released!'
  end
end

#rtl_top ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 77

def rtl_top
  config[:rtl_top] || 'dut'
end

#run_cmd ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 317

def run_cmd
  case config[:vendor]
  when :icarus
    cmd = configuration[:vvp] || 'vvp'
    cmd += " -M#{compiled_dir} -morigen #{compiled_dir}/origen.vvp +socket+#{socket_id}"

  when :cadence
    input_file = "#{tmp_dir}/#{wave_file_basename}.tcl"
    if !File.exist?(input_file) || config_changed?
      Origen.app.runner.launch action:            :compile,
                               files:             "#{Origen.root!}/templates/probe.tcl.erb",
                               output:            tmp_dir,
                               check_for_changes: false,
                               quiet:             true,
                               options:           { dir: wave_dir, wave_file: wave_file_basename, force: config[:force], setup: config[:setup], depth: :all },
                               output_file_name:  "#{wave_file_basename}.tcl",
                               preserve_target:   true
    end
    input_file_fast = "#{tmp_dir}/#{wave_file_basename}_fast.tcl"
    if !File.exist?(input_file_fast) || config_changed?
      fast_probe_depth = config[:fast_probe_depth] || 1
      Origen.app.runner.launch action:            :compile,
                               files:             "#{Origen.root!}/templates/probe.tcl.erb",
                               output:            tmp_dir,
                               check_for_changes: false,
                               quiet:             true,
                               options:           { dir: wave_dir, wave_file: wave_file_basename, force: config[:force], setup: config[:setup], depth: fast_probe_depth },
                               output_file_name:  "#{wave_file_basename}_fast.tcl",
                               preserve_target:   true
    end
    save_config_signature
    wave_dir  # Ensure this exists since it won't be referenced above if the input file is already generated

    cmd = configuration[:irun] || 'irun'
    cmd += " -r origen -snapshot origen +socket+#{socket_id}"
    cmd += $use_fast_probe_depth ? " -input #{input_file_fast}" : " -input #{input_file}"
    cmd += " -nclibdirpath #{compiled_dir}"

  when :synopsys
    if configuration[:verdi]
      cmd = "#{compiled_dir}/simv +socket+#{socket_id} +FSDB_ON +fsdbfile+#{Origen.root}/waves/#{id}/#{wave_file_basename}.fsdb +memcbk +vcsd"
    else
      cmd = "#{compiled_dir}/simv +socket+#{socket_id} -vpd_file #{wave_file_basename}.vpd"
    end

  when :generic
    # Generic tester requires that a generic_run_command option/block be provided.
    # This should either be a string, an array (which will be joined here), or a block that needs to return either
    # a string or array. In the event of a block, the block will be given the simulator.
    if generic_run_cmd
      cmd = generic_run_cmd
      if cmd.is_a?(Proc)
        cmd = cmd.call(self)
      end

      if cmd.is_a?(Array)
        # We'll join this together with the '; ' string. This means that each array element will be run
        # sequentially.
        cmd = cmd.join(' && ')
      elsif !cmd.is_a?(String)
        # If its Proc, it was already run, and if its a Array if would have gone into the other case.
        # So, this is either another proc, not an array and not a string, so not sure what to do with this.
        # Complain about the cmd.
        fail "OrigenSim :generic_run_cmd is of class #{generic_run_cmd.class}. It must be either an Array, String, or a Proc that returns an Array or String."
      end
    else
      fail 'OrigenSim Generic Toolchain/Vendor requires a :generic_run_cmd option/block to be provided. No options/block provided!'
    end

  else
    fail "Run cmd not defined yet for simulator #{config[:vendor]}"

  end

  # Allow the user to post-process the command. This should be a block which will be given two parameters:
  # 1. the command, and 2. the simulation object (self).
  # In the event of a generic tester, this *could* replace the launch command, but that's not the real intention,
  # since a simulator could be made that inherits from a generic simulator setup and still post process the command.
  cmd = post_process_run_cmd.call(cmd, self) if post_process_run_cmd
  fail "OrigenSim: :post_process_run_cmd returned object of class #{cmd.class}. Must return a String." unless cmd.is_a?(String)

  # Print the command if debug is enabled
  Origen.log.debug 'OrigenSim Run Command:'
  Origen.log.debug cmd

  cmd
end

#run_dir ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 484

def run_dir
  case config[:vendor]
  when :icarus
    d = File.join(wave_dir, wave_file_basename)
    FileUtils.mkdir_p(d)
    d
  when :synopsys
    wave_dir
  else
    tmp_dir
  end
end

#running? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/origen_sim/simulator.rb', line 1199

def running?
  if simulation
    simulation.running?
  else
    false
  end
end

#save_config_signature ⇒ Object

Locally saves a signature for the current config, this will cause config_changed? to return false until its contents change



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# File 'lib/origen_sim/simulator.rb', line 1087

def save_config_signature
  Origen.app.session.origen_sim["#{id}_config"] = config.except(*NON_DATA_CONFIG_ATTRIBUTES)
end

#set_period(period_in_ns) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 848

def set_period(period_in_ns)
  put("1^#{ns_to_simtime_units(period_in_ns)}")
end

#simulation_open? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/origen_sim/simulator.rb', line 497

def simulation_open?
  @simulation_open
end

#simulation_tester? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/origen_sim/simulator.rb', line 1064

def simulation_tester?
  (tester && tester.is_a?(OrigenSim::Tester))
end

#snapshot_detail(d) ⇒ Object 



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# File 'lib/origen_sim/simulator/snapshot_details.rb', line 55

def snapshot_detail(d)
  snapshot_details(d)
end

#snapshot_details(d = nil) ⇒ Object 



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# File 'lib/origen_sim/simulator/snapshot_details.rb', line 47

def snapshot_details(d = nil)
  if d
    _snapshot_details[d]
  else
    _snapshot_details
  end
end

#socket_id ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 1060

def socket_id
  simulation.socket_id
end

#start ⇒ Object

Starts up the simulator process



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# File 'lib/origen_sim/simulator.rb', line 502

def start
  @simulation_open = true
  @pattern_starting_error_count = nil
  @simulation = Simulation.new(wave_file_basename, view_wave_command)
  simulations << @simulation

  fetch_simulation_objects

  artifact.clean
  artifact.populate

  cmd = run_cmd + ' & echo \$!'

  launch_simulator = %(
    require 'open3'
    require 'socket'
    require 'io/wait'
    require 'origen'

    pid = nil

    def kill_simulation(pid)
      begin
        # If the process already finished, then we will see an Errno exception.
        # It does not harm anything, but looks ugly, so catch it here and ignore.
        Process.kill('KILL', pid)
      rescue Errno::ESRCH => e
      end
      exit!
    end

    status = UNIXSocket.new('#{simulation.socket_id(:status)}')
    stdout_socket = UNIXSocket.new('#{simulation.socket_id(:stdout)}')
    stderr_socket = UNIXSocket.new('#{simulation.socket_id(:stderr)}')
    heartbeat = UNIXSocket.new('#{simulation.socket_id(:heartbeat)}')

    begin

      status.puts('Starting the simulator...')

      Dir.chdir '#{run_dir}' do
        Open3.popen3('#{cmd}') do |stdin, stdout, stderr, thread|
          status.puts('The simulator has started')
          pid = stdout.gets.strip.to_i
          status.puts(pid.to_s)

          # Listen for a heartbeat from the main Origen process every 5 seconds, kill the
          # simulator after two missed heartbeats
          Thread.new do
            missed_heartbeats = 0
            loop do
              sleep 5

              # If the socket read hangs, count that as a reason to shutdown
              socket_read = false
              Thread.new do
                sleep 1
                kill_simulation(pid) unless socket_read
              end

              if heartbeat.ready?
                while heartbeat.ready? do
                  heartbeat.gets
                end
                missed_heartbeats = 0
              else
                missed_heartbeats += 1
              end
              socket_read = true
              if missed_heartbeats > 1
                kill_simulation(pid)
              end
            end
          end

          threads = []
          threads << Thread.new do
            until (line = stdout.gets).nil?
              stdout_socket.puts line
            end
          end
          threads << Thread.new do
            until (line = stderr.gets).nil?
              stderr_socket.puts line
            end
          end
          threads.each(&:join)
        end
      end

      status.puts 'The simulator has finished'

    ensure
      # Make sure this process never finishes and leaves the simulator running
      kill_simulation(pid) if pid
    end
  )

  Origen.log.debug 'Starting the simulation monitor...'

  Origen.log.flush # Required to stop any existing buffered log data being copied into this new process

  monitor_pid = spawn("ruby -e \"#{launch_simulator}\"")
  Process.detach(monitor_pid)

  simulation.open(monitor_pid, config[:startup_timeout] || 60) # This will block until the simulation process has started

  # The VPI extension will send 'READY!' when it starts, make sure we get it before proceeding
  data = get
  unless data.strip == 'READY!'
    simulation.failed_to_start = true
    simulation.log_results
    exit  # Assume it is not worth trying another pattern in this case, some kind of environment/config issue
  end
  Origen.log.info "OrigenSim version #{Origen.app!.version}"
  Origen.log.info "OrigenSim DUT version #{dut_version}"
  unless dut_version > '0.15.0'
    Origen.log.warning 'Progress comments may be out of sync with simulator output.'
    Origen.log.warning 'Recompile your DUT with a newer version of OrigenSim to resolve this.'
  end
  # Tick the simulation on, this seems to be required since any VPI puts operations before
  # the simulation has started are not applied.
  # Note that this is not setting a tester timeset, so the application will still have to
  # do that before generating any vectors.
  put('1^0')  # Set period to 0 so that time does not advance
  cycle(1)
  if dut_version > '0.15.0'
    # Put cycle counter back to 0
    put('p^0')
    simulation.cycle(-1)
    put("m^#{max_errors}")
    # Intercept all log messages until the end of the simulation so that they can be synced to
    # simulation time
    @log_intercept_id = Origen.log.start_intercepting do |msg, type, options, original|
      if options[:from_origen_sim]
        original.call(msg, type, options)
      else
        # If the message would fit without the multi-line collateral, send it as normal.
        # Note: this also avoids the pitfall of a message whose size is exactly
        #   config[:max_log_size] - LOGGER_COLLATERAL_SIZE getting stuck until
        #   something else is pushed.
        if msg.size > config[:max_log_size] - (LOGGER_COLLATERAL_SIZE - MULTIPART_LOGGER_TOKEN.size)
          msg.chars.each_slice(config[:max_log_size] - LOGGER_COLLATERAL_SIZE) do |m|
            if m.size == config[:max_log_size] - LOGGER_COLLATERAL_SIZE
              log(m.join + MULTIPART_LOGGER_TOKEN, type, multipart: true)
            else
              log(m.join, type, multipart: false)
            end
          end
        else
          log(msg, type, multipart: false)
        end
      end
    end
  end
  sync_up # Make sure the simulation is underway before proceeding
  Origen.listeners_for(:simulation_startup).each(&:simulation_startup)
end

#start_read_reg_transaction ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 1173

def start_read_reg_transaction
  put('n^1')
end

#stop ⇒ Object

Stop the simulator



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# File 'lib/origen_sim/simulator.rb', line 993

def stop
  @simulation_open = false
  simulation.error_count = error_count
  Origen.listeners_for(:simulation_shutdown).each(&:simulation_shutdown)
  sync_up
  Origen.log.stop_intercepting @log_intercept_id
  simulation.ended = true
  end_simulation
  # Give the simulator time to shut down
  sleep 0.1 while simulation.running?
  simulation.close
  simulation.log_results unless Origen.current_command == 'interactive'
rescue
  simulation.completed_cleanly = false
end

#stop_read_reg_transaction ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 1177

def stop_read_reg_transaction
  put('n^0')
  data = get
  error_count, max_errors = *(data.strip.split(',').map(&:to_i))
  if error_count > 0
    errors = []
    error_count.times do |i|
      data = get  # => "tdo,648,1,0\n"
      pin_name, cycle, expected, received = *(data.strip.split(','))
      errors << { pin_name: pin_name, cycle: cycle.to_i, expected: expected.to_i, received: received.to_i }
    end
    [true, error_count > max_errors, errors]
  end
end

#sync ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 1068

def sync
  put('f')
  @sync_active = true
  yield
  put('g')
  @sync_active = false
end

#sync_active? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/origen_sim/simulator.rb', line 1076

def sync_active?
  @sync_active
end

#sync_up ⇒ Object

Blocks the Origen process until the simulator indicates that it has processed all operations up to this point



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# File 'lib/origen_sim/simulator.rb', line 859

def sync_up
  put('7^')
  data = get
  unless data.strip == 'OK!'
    fail 'Origen and the simulator are out of sync!'
  end
end

#target_artifact_dir ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 214

def target_artifact_dir
  Pathname(@configuration[:target_artifact_dir] || "#{Origen.app.root}/simulation/#{id}/artifacts")
end

#testbench_top ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 73

def testbench_top
  config[:testbench_top] || 'origen'
end

#timescale ⇒ Object

Get the timescale of the current simulation, returns a number that maps as follows:

-15 - fs
-14 - 10fs
-13 - 100fs
-12 - ps
-11 - 10ps
-10 - 100ps
-9  - ns
-8  - 10ns
-7  - 100ns
-6  - us
-5  - 10us
-4  - 100us
-3  - ms
-2  - 10ms
-1  - 100ms
 0  - s
 1  - 10s
 2  - 100s



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# File 'lib/origen_sim/simulator.rb', line 1122

def timescale
  put('l^')
  get.strip.to_i
end

#tmp_dir ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 244

def tmp_dir
  @tmp_dir ||= begin
    d = "#{Origen.root}/tmp/origen_sim/#{id}/#{config[:vendor]}"
    FileUtils.mkdir_p(d)
    d
  end
end

#user_artifact_dirs ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 210

def user_artifact_dirs
  @configuration.key?(:user_artifact_dirs) ? @configuration[:user_artifact_dirs].map { |d| Pathname(d) } : nil
end

#user_artifact_dirs? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/origen_sim/simulator.rb', line 206

def user_artifact_dirs?
  @configuration.key?(:user_artifact_dirs)
end

#view_wave_command ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 421

def view_wave_command
  cmd = nil
  case config[:vendor]
  when :icarus
    edir = Pathname.new(wave_config_dir).relative_path_from(Pathname.pwd)
    cmd = "cd #{edir} && "
    cmd += configuration[:gtkwave] || 'gtkwave'
    dir = Pathname.new(wave_dir).relative_path_from(edir.expand_path)
    cmd += " #{dir}/#{wave_file_basename}/dump.vcd "
    f = Pathname.new(wave_config_file).relative_path_from(edir.expand_path)
    cmd += " --save #{f} &"

  when :cadence
    edir = Pathname.new(wave_config_dir).relative_path_from(Pathname.pwd)
    cmd = "cd #{edir} && "
    cmd += configuration[:simvision] || 'simvision'
    dir = Pathname.new(wave_dir).relative_path_from(edir.expand_path)
    cmd += " #{dir}/#{wave_file_basename}/#{wave_file_basename}.dsn #{dir}/#{wave_file_basename}/#{wave_file_basename}.trn"
    f = Pathname.new(wave_config_file).relative_path_from(edir.expand_path)
    cmd += " -input #{f} &"

  when :synopsys
    edir = Pathname.new(wave_config_dir).relative_path_from(Pathname.pwd)
    cmd = "cd #{edir} && "
    if configuration[:verdi]
      unless ENV['VCS_HOME']
        Origen.log.warning "Your environment doesn't define VCS_HOME, you will probably need that to run Verdi"
      end
      edir = Pathname.new(wave_config_dir).relative_path_from(Pathname.pwd)
      cmd = "cd #{edir} && "
      cmd += configuration[:verdi] || 'verdi'
      dir = Pathname.new(wave_dir).relative_path_from(edir.expand_path)
      cmd += " -ssz -dbdir #{Origen.root}/simulation/#{id}/synopsys/simv.daidir/ -ssf #{dir}/#{wave_file_basename}.fsdb"
      f = Pathname.new(wave_config_file).relative_path_from(edir.expand_path)
      cmd += " -sswr #{f}"
      cmd += ' &'
    else
      cmd += configuration[:dve] || 'dve'
      dir = Pathname.new(wave_dir).relative_path_from(edir.expand_path)
      cmd += " -vpd #{dir}/#{wave_file_basename}.vpd"
      f = Pathname.new(wave_config_file).relative_path_from(edir.expand_path)
      cmd += " -session #{f}"
      cmd += ' &'
    end

  when :generic
    # Since this could be anything, the simulator will need to set this up. But, once it is, we can print it here.
    if config[:view_waveform_cmd]
      cmd = config[:view_waveform_cmd]
    else
      Origen.log.warn 'OrigenSim cannot provide a view-waveform command for a :generic vendor.'
      Origen.log.warn 'Please supply a view-waveform command though the :view_waveform_cmd option during the OrigenSim::Generic instantiation.'
    end

  else
    # Print a warning stating an unknown vendor was reached here.
    # This shouldn't happen, but just in case.
    Origen.log.warn "OrigenSim does not know the command to view waveforms for vendor :#{config[:vendor]}!"

  end
  cmd
end

#wave_config_dir ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 270

def wave_config_dir
  @wave_config_dir ||= begin
    d = "#{Origen.root}/config/waves/#{id}"
    FileUtils.mkdir_p(d)
    d
  end
end

#wave_config_ext ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 302

def wave_config_ext
  case config[:vendor]
  when :icarus
    'gtkw'
  when :cadence
    'svcf'
  when :synopsys
    if configuration[:verdi]
      'rc'
    else
      'tcl'
    end
  end
end

#wave_config_file ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 278

def wave_config_file
  @wave_config_file ||= configuration[:wave_config_file] || begin
    f = "#{wave_config_dir}/#{User.current.id}.#{wave_config_ext}"
    unless File.exist?(f)
      # Take a default wave if one has been set up
      d = "#{wave_config_dir}/default.#{wave_config_ext}"
      if File.exist?(d)
        FileUtils.cp(d, f)
      else
        # Otherwise seed it with the latest existing setup by someone else
        d = Dir.glob("#{wave_config_dir}/*.#{wave_config_ext}").max { |a, b| File.ctime(a) <=> File.ctime(b) }
        if d
          FileUtils.cp(d, f)
        else
          # We tried our best, start from scratch
          d = "#{Origen.root!}/templates/empty.#{wave_config_ext}"
          FileUtils.cp(d, f) if File.exist?(d)
        end
      end
    end
    f
  end
end

#wave_dir(subdir = nil) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 262

def wave_dir(subdir = nil)
  @wave_dir ||= begin
    d = "#{Origen.root}/waves/#{id}"
    FileUtils.mkdir_p(d)
    d
  end
end

#wave_file_basename ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 405

def wave_file_basename
  if OrigenSim.flow
    OrigenSim.flow.to_s
  else
    if Origen.app.current_job
      @last_wave_file_basename = Pathname.new(Origen.app.current_job.output_file).basename('.*').to_s
    else
      if Origen.interactive?
        'interactive'
      else
        @last_wave_file_basename || 'unnamed_pattern'
      end
    end
  end
end

#wave_to_str(wave) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 820

def wave_to_str(wave)
  wave.evaluated_events.map do |time, data|
    if data == :x
      data = 'X'
    elsif data == :data
      data = wave.drive? ? 'D' : 'C'
    end
    if data == 'C'
      "#{ns_to_simtime_units(time)}_#{data}_#{ns_to_simtime_units(time + 1)}_X"
    else
      "#{ns_to_simtime_units(time)}_#{data}"
    end
  end.join('_')
end

#wreal? ⇒ Boolean Also known as: wreal_enabled?

Returns true if the snapshot has been compiled with WREAL support

Returns:

  • (Boolean) 


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# File 'lib/origen_sim/simulator.rb', line 1208

def wreal?
  return @wreal if defined?(@wreal)
  @wreal = (dut_version > '0.19.0' &&
            peek("#{testbench_top}.debug.wreal_enabled").to_i == 1)
end

#write_comment(line, comment) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 761

def write_comment(line, comment)
  return if line >= OrigenSim::NUMBER_OF_COMMENT_LINES
  # Not sure what the limiting factor here is, the comment memory in the test bench should
  # be able to handle 1024 / 8 length strings, but any bigger than this hangs the simulation
  comment = comment ? comment[0..96] : ''
  if dut_version > '0.12.1'
    put("c^#{line}^#{comment} ")  # Space at the end is important so that an empty comment is communicated properly
  else
    put("c^#{comment} ")
  end
end