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[/] [gamepads/] [trunk/] [gcpad/] [bench/] [vhdl/] [tb.vhd] - Diff between revs 26 and 30

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Rev 26 Rev 30
Line 1... Line 1... 
-------------------------------------------------------------------------------
 
-------------------------------------------------------------------------------
 
--
 
--
 
-- Testbench for the
 
-- Testbench for the
 
-- GCpad controller core
 
-- GCpad controller core
 
--
 
--
 
-- $Id: tb.vhd,v 1.3 2004-10-10 17:27:44 arniml Exp $
 
-- $Id: tb.vhd,v 1.4 2004-10-10 20:19:49 arniml Exp $
 
--
 
--
 
-- Copyright (c) 2004, Arnim Laeuger (arniml@opencores.org)
 
-- Copyright (c) 2004, Arnim Laeuger (arniml@opencores.org)
 
--
 
--
 
-- All rights reserved
 
-- All rights reserved
 
--
 
--
Line 59... Line 59... 
use work.gcpad_comp.gcpad_basic;
 
use work.gcpad_comp.gcpad_basic;
 
use work.gcpad_comp.gcpad_full;
 
use work.gcpad_comp.gcpad_full;
 
 
 
 
 
architecture behav of tb is
 
architecture behav of tb is
 
 
 
 
 
 
 
  -----------------------------------------------------------------------------
 
 
 
  -- Some known commands for the GC controller
 
 
 
  -----------------------------------------------------------------------------
 
 
 
  constant cmd_get_id_c : std_logic_vector(7 downto 0) := "00000000";
 
 
 
  constant cmd_poll_c   : std_logic_vector(7 downto 0) := "01000000";
 
 
 
 
 
 
 
 
 
  component gcpad_mod
 
  component gcpad_mod
 
    generic (
 
    generic (
 
      clocks_per_1us_g :       natural := 2
 
      clocks_per_1us_g :       natural := 2
 
    );
 
    );
 
    port (
 
    port (
Line 83... Line 90... 
  signal stimuli_1_end_s : boolean;
 
  signal stimuli_1_end_s : boolean;
 
  signal pad_data_1_s    : std_logic;
 
  signal pad_data_1_s    : std_logic;
 
  signal buttons_1_s     : std_logic_vector(64 downto 0);
 
  signal buttons_1_s     : std_logic_vector(64 downto 0);
 
  signal pad_request_1_s : std_logic;
 
  signal pad_request_1_s : std_logic;
 
  signal pad_avail_1_s   : std_logic;
 
  signal pad_avail_1_s   : std_logic;
 
  signal rx_data_1_s     : std_logic_vector(63 downto 0);
 
  signal pad_model_data_1_s : std_logic_vector(63 downto 0);
 
 
 
 
 
  -- signals for full gcpad
 
  -- signals for full gcpad
 
  signal stimuli_2_end_s : boolean;
 
  signal stimuli_2_end_s : boolean;
 
  signal pad_data_2_s    : std_logic;
 
  signal pad_data_2_s    : std_logic;
 
  signal pad_request_2_s : std_logic;
 
  signal pad_request_2_s : std_logic;
Line 95... Line 102... 
  signal pad_timeout_2_s : std_logic;
 
  signal pad_timeout_2_s : std_logic;
 
  signal tx_size_2_s     : std_logic_vector( 1 downto 0);
 
  signal tx_size_2_s     : std_logic_vector( 1 downto 0);
 
  signal tx_command_2_s  : std_logic_vector(23 downto 0);
 
  signal tx_command_2_s  : std_logic_vector(23 downto 0);
 
  signal rx_size_2_s     : std_logic_vector( 3 downto 0);
 
  signal rx_size_2_s     : std_logic_vector( 3 downto 0);
 
  signal rx_data_2_s     : std_logic_vector(63 downto 0);
 
  signal rx_data_2_s     : std_logic_vector(63 downto 0);
 
 
 
  signal pad_model_data_2_s : std_logic_vector(63 downto 0);
 
 
 
 
 
begin
 
begin
 
 
 
 
 
  basic_b : gcpad_basic
 
  basic_b : gcpad_basic
 
    generic map (
 
    generic map (
Line 160... Line 168... 
      clocks_per_1us_g => clocks_per_1us_c
 
      clocks_per_1us_g => clocks_per_1us_c
 
    )
 
    )
 
    port map (
 
    port map (
 
      clk_i            => clk_s,
 
      clk_i            => clk_s,
 
      pad_data_io      => pad_data_1_s,
 
      pad_data_io      => pad_data_1_s,
 
      rx_data_i        => rx_data_1_s
 
      rx_data_i        => pad_model_data_1_s
 
    );
 
    );
 
 
 
 
 
 
 
 
 
  -----------------------------------------------------------------------------
 
  -----------------------------------------------------------------------------
 
  -- Process stimuli_pad_1
 
  -- Process stimuli_pad_1
 
  --
 
  --
 
  -- Executes test stimuli with Pad 1, the gcpad_basic flavour.
 
  -- Executes test stimuli with Pad 1, the gcpad_basic flavour.
 
  --
 
  --
 
  stimuli_pad_1: process
 
  stimuli_pad_1: process
 
 
 
 
 
 
 
    ---------------------------------------------------------------------------
 
    procedure send_packet(packet : in std_logic_vector(64 downto 0)) is
 
    -- Procedure poll_pad
 
 
 
    --
 
 
 
    -- Requests the status of Pad 1 and checks the received data.
 
 
 
    --
 
 
 
    procedure poll_pad(packet : in std_logic_vector(63 downto 0)) is
 
    begin
 
    begin
 
      wait until clk_s'event and clk_s = '1';
 
      wait until clk_s'event and clk_s = '1';
 
      wait for 1 ns;
 
      wait for 1 ns;
 
 
 
 
 
      rx_data_1_s <= packet(64 downto 1);
 
      pad_model_data_1_s <= packet;
 
 
 
 
 
      -- send request;
 
      -- send request;
 
      pad_request_1_s <= '1';
 
      pad_request_1_s <= '1';
 
      wait for 1 * period_c;
 
      wait for 1 * period_c;
 
      pad_request_1_s <= '0';
 
      pad_request_1_s <= '0';
Line 189... Line 202... 
 
 
 
 
      wait until pad_avail_1_s = '1';
 
      wait until pad_avail_1_s = '1';
 
      wait for 10 * period_c;
 
      wait for 10 * period_c;
 
 
 
 
 
      -- check result
 
      -- check result
 
      for i in 1 to packet'high loop
 
      for i in 0 to packet'high loop
 
        assert packet(i) = buttons_1_s(i-1)
 
        assert packet(i) = buttons_1_s(i)
 
          report "Button mismatch!"
 
          report "Button mismatch on Pad 1!"
 
          severity error;
 
          severity error;
 
      end loop;
 
      end loop;
 
 
 
 
 
    end send_packet;
 
    end poll_pad;
 
 
 
    --
 
 
 
    ---------------------------------------------------------------------------
 
 
 
 
 
 
 
 
 
 
 
    ---------------------------------------------------------------------------
 
 
 
    -- Procedure timeout_gcpad
 
 
 
    --
 
 
 
    -- Generates a timeout in gcpad_basic by disturbing the communication.
 
 
 
    --
 
    procedure timeout_gcpad is
 
    procedure timeout_gcpad is
 
    begin
 
    begin
 
 
 
      wait until clk_s'event and clk_s = '1';
 
 
 
      wait for 1 ns;
 
 
 
 
 
      -- send request;
 
      -- send request;
 
      pad_request_1_s <= '1';
 
      pad_request_1_s <= '1';
 
      wait for 1 * period_c;
 
      wait for 1 * period_c;
 
      pad_request_1_s <= '0';
 
      pad_request_1_s <= '0';
 
 
 
 
Line 216... Line 239... 
      wait for 10 * period_c;
 
      wait for 10 * period_c;
 
      pad_data_1_s <= 'H';
 
      pad_data_1_s <= 'H';
 
      wait for 10 * period_c;
 
      wait for 10 * period_c;
 
 
 
 
 
    end timeout_gcpad;
 
    end timeout_gcpad;
 
 
 
    --
 
 
 
    ---------------------------------------------------------------------------
 
 
 
 
 
  begin
 
  begin
 
    stimuli_1_end_s <= false;
 
    stimuli_1_end_s <= false;
 
 
 
 
 
    pad_data_1_s    <= 'H';
 
    pad_data_1_s    <= 'H';
 
    pad_request_1_s <= '0';
 
    pad_request_1_s <= '0';
 
    rx_data_1_s     <= (others => '0');
 
    pad_model_data_1_s <= (others => '0');
 
 
 
 
 
    wait until reset_s = '1';
 
    wait until reset_s = '1';
 
    wait for period_c * 4;
 
    wait for period_c * 4;
 
 
 
 
 
    timeout_gcpad;
 
    timeout_gcpad;
 
    send_packet(packet => "00000000100000000000000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000000000000");
 
    wait for clocks_per_1us_c * 100 * period_c;
 
    wait for clocks_per_1us_c * 100 * period_c;
 
    send_packet(packet => "00011111111111111111111111111111111111111111111111111111111111111");
 
    poll_pad(packet => "0001111111111111111111111111111111111111111111111111111111111111");
 
    send_packet(packet => "00010000100000000000000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0001000010000000000000000000000000000000000000000000000000000000");
 
    send_packet(packet => "00001000100000000000000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000100010000000000000000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000100100000000000000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000010010000000000000000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000010100000000000000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000001010000000000000000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000001100000000000000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000110000000000000000000000000000000000000000000000000000000");
 
    send_packet(packet => "00001010101010101010101010101010101010101010101010101010101010101");
 
    poll_pad(packet => "0000101010101010101010101010101010101010101010101010101010101010");
 
    send_packet(packet => "00010101110101010101010101010101010101010101010101010101010101011");
 
    poll_pad(packet => "0001010111010101010101010101010101010101010101010101010101010101");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000110000000000000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000011000000000000000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000101000000000000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010100000000000000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100100000000000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010010000000000000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100010000000000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010001000000000000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100001000000000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000100000000000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000100000000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000010000000000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000010000000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000001000000000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000001000000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000100000000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000100000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000010000000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000010000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000001000000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000001000000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000100000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000100000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000010000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000010000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000001000000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000001000000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000100000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000100000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000010000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000010000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000001000000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000001000000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000100000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000100000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000010000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000010000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000001000000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000001000000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000100000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000100000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000010000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000010000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000001000000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000001000000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000100000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000100000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000010000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000010000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000001000000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000001000000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000100000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000100000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000010000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000010000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000001000000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000001000000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000100000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000100000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000010000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000010000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000001000000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000001000000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000100000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000100000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000010000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000010000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000001000000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000001000000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000100000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000100000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000010000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000010000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000001000000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000001000000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000100000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000100000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000010000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000010000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000001000000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000001000000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000100000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000000100000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000010000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000000010000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000001000000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000000001000000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000100000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000000000100000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000010000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000000000010000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000001000000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000000000001000000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000100000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000000000000100000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000010000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000000000000010000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000001000000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000000000000001000001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000000100000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000000000000000100001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000000010000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000000000000000010001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000000001000");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000000000000000001001");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000000000100");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000000000000000000101");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000000000010");
 
    send_packet(packet => "00000000100000000000000000000000000000000000000000000000000000011");
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000000000001");
 
 
 
 
 
 
 
 
 
    wait for period_c * 2*40;
 
    wait for period_c * 2*40;
 
    stimuli_1_end_s <= true;
 
    stimuli_1_end_s <= true;
 
    wait;
 
    wait;
Line 312... Line 337... 
      clocks_per_1us_g => clocks_per_1us_c
 
      clocks_per_1us_g => clocks_per_1us_c
 
    )
 
    )
 
    port map (
 
    port map (
 
      clk_i            => clk_s,
 
      clk_i            => clk_s,
 
      pad_data_io      => pad_data_2_s,
 
      pad_data_io      => pad_data_2_s,
 
      rx_data_i        => rx_data_2_s
 
      rx_data_i        => pad_model_data_2_s
 
    );
 
    );
 
 
 
 
 
 
 
 
 
  -----------------------------------------------------------------------------
 
  -----------------------------------------------------------------------------
 
  -- Process stimuli_pad_2
 
  -- Process stimuli_pad_2
 
  --
 
  --
 
  -- Executes test stimuli with Pad 2, the gcpad_full flavour.
 
  -- Executes test stimuli with Pad 2, the gcpad_full flavour.
 
  --
 
  --
 
  stimuli_pad_2: process
 
  stimuli_pad_2: process
 
 
 
 
 
 
 
    ---------------------------------------------------------------------------
 
 
 
    -- Procedure issue_command
 
 
 
    --
 
 
 
    -- Sets the transmitter command for Pad 2 and starts the request.
 
 
 
    --
 
    procedure issue_command(cmd  : in std_logic_vector(23 downto 0);
 
    procedure issue_command(cmd  : in std_logic_vector(23 downto 0);
 
                            size : in std_logic_vector( 1 downto 0)) is
 
                            size : in std_logic_vector( 1 downto 0)) is
 
    begin
 
    begin
 
      wait until clk_s'event and clk_s = '1';
 
      wait until clk_s'event and clk_s = '1';
 
      wait for 1 ns;
 
      wait for 1 ns;
Line 335... Line 366... 
      -- send request;
 
      -- send request;
 
      pad_request_2_s <= '1';
 
      pad_request_2_s <= '1';
 
      wait for 1 * period_c;
 
      wait for 1 * period_c;
 
      pad_request_2_s <= '0';
 
      pad_request_2_s <= '0';
 
 
 
 
 
 
 
 
 
    end issue_command;
 
    end issue_command;
 
 
 
    --
 
 
 
    ---------------------------------------------------------------------------
 
 
 
 
 
 
 
 
 
 
 
    ---------------------------------------------------------------------------
 
 
 
    -- Procedure poll_pad
 
 
 
    --
 
 
 
    -- Requests the status of Pad 2 and checks the received data.
 
 
 
    --
 
 
 
    procedure poll_pad(packet : in std_logic_vector(63 downto 0)) is
 
 
 
      variable cmd_v : std_logic_vector(23 downto 0);
 
 
 
    begin
 
 
 
      wait until clk_s'event and clk_s = '1';
 
 
 
      wait for 1 ns;
 
 
 
 
 
 
 
      -- set up model answer
 
 
 
      pad_model_data_2_s <= packet;
 
 
 
      -- set expected number of bytes for gcpad_full
 
 
 
      rx_size_2_s        <= "1000";
 
 
 
 
 
 
 
      cmd_v(23 downto 16) := cmd_poll_c;
 
 
 
      cmd_v(15 downto  0) := "0000001100000010";
 
 
 
      issue_command(cmd  => cmd_v,
 
 
 
                    size => "11");
 
 
 
 
 
 
 
      wait until pad_avail_2_s = '1';
 
 
 
 
 
 
 
      assert pad_timeout_2_s = '0'
 
 
 
        report "Timout signalled on Pad 2 during status polling!"
 
 
 
        severity error;
 
 
 
 
 
 
 
      -- check result
 
 
 
      for i in 0 to packet'high loop
 
 
 
        assert packet(i) = rx_data_2_s(i)
 
 
 
          report "Data mismatch on Pad 2!"
 
 
 
          severity error;
 
 
 
      end loop;
 
 
 
 
 
 
 
    end poll_pad;
 
 
 
    --
 
 
 
    ---------------------------------------------------------------------------
 
 
 
 
 
 
 
 
 
 
 
    ---------------------------------------------------------------------------
 
 
 
    -- Procedure timeout_gcpad_x
 
 
 
    --
 
 
 
    -- Generates a timeout in gcpad_full by disturbing the communication.
 
 
 
    --
 
 
 
    procedure timeout_gcpad_x is
 
 
 
      variable cmd_v : std_logic_vector(23 downto 0);
 
 
 
    begin
 
 
 
      wait until clk_s'event and clk_s = '1';
 
 
 
      wait for 1 ns;
 
 
 
 
 
 
 
      pad_model_data_2_s <= (others => '0');
 
 
 
      rx_size_2_s        <= "1000";
 
 
 
 
 
 
 
 
 
 
 
      cmd_v(23 downto 16) := cmd_poll_c;
 
 
 
      cmd_v(15 downto  0) := "0000001100000010";
 
 
 
      issue_command(cmd  => cmd_v,
 
 
 
                    size => "11");
 
 
 
 
 
 
 
      -- disturb communication
 
 
 
      pad_data_2_s <= 'X';
 
 
 
 
 
 
 
      wait until pad_avail_1_s = '1';
 
 
 
      wait for 10 * period_c;
 
 
 
      pad_data_2_s <= 'H';
 
 
 
      wait for 10 * period_c;
 
 
 
 
 
 
 
      assert pad_timeout_2_s = '1'
 
 
 
        report "No timeout indicated on Pad 2 when communication has been disturbed!"
 
 
 
        severity error;
 
 
 
 
 
 
 
    end timeout_gcpad_x;
 
 
 
    --
 
 
 
    ---------------------------------------------------------------------------
 
 
 
 
 
 
 
 
 
 
 
    ---------------------------------------------------------------------------
 
 
 
    -- Procedure timeout_gcpad_short
 
 
 
    --
 
 
 
    -- Generates a timeout in gcpad_full by requesting too many bytes for
 
 
 
    -- a "get id" command.
 
 
 
    --
 
 
 
    procedure timeout_gcpad_short is
 
 
 
      variable cmd_v : std_logic_vector(23 downto 0);
 
 
 
    begin
 
 
 
      wait until clk_s'event and clk_s = '1';
 
 
 
      wait for 1 ns;
 
 
 
 
 
 
 
      -- expect too many number of bytes
 
 
 
      -- command is "get id", will yield 3 bytes, but 8 bytes are requested
 
 
 
      rx_size_2_s        <= "1000";
 
 
 
 
 
 
 
 
 
 
 
      cmd_v(23 downto 16) := cmd_get_id_c;
 
 
 
      cmd_v(15 downto  0) := (others => '1');
 
 
 
      issue_command(cmd  => cmd_v,
 
 
 
                    size => "01");
 
 
 
 
 
 
 
      wait until pad_avail_2_s = '1';
 
 
 
 
 
 
 
      assert pad_timeout_2_s = '1'
 
 
 
        report "No timout indicated on Pad 2 when too many bytes requested!"
 
 
 
        severity error;
 
 
 
 
 
 
 
    end timeout_gcpad_short;
 
 
 
    --
 
 
 
    ---------------------------------------------------------------------------
 
 
 
 
 
 
 
 
 
 
 
    ---------------------------------------------------------------------------
 
 
 
    -- Procedure get_id
 
 
 
    --
 
 
 
    -- Requests the ID information from the GC controller model.
 
 
 
    --
 
 
 
    procedure get_id is
 
 
 
      variable cmd_v : std_logic_vector(23 downto 0);
 
 
 
      constant id_c  : std_logic_vector(23 downto 0) := "000010010000000000000000";
 
 
 
    begin
 
 
 
      wait until clk_s'event and clk_s = '1';
 
 
 
      wait for 1 ns;
 
 
 
 
 
 
 
      rx_size_2_s        <= "0011";
 
 
 
 
 
 
 
 
 
 
 
      cmd_v(23 downto 16) := cmd_get_id_c;
 
 
 
      cmd_v(15 downto  0) := (others => '1');
 
 
 
      issue_command(cmd  => cmd_v,
 
 
 
                    size => "01");
 
 
 
 
 
 
 
      wait until pad_avail_2_s = '1';
 
 
 
 
 
 
 
      assert pad_timeout_2_s = '0'
 
 
 
        report "Timout signalled on Pad 2 during get id!"
 
 
 
        severity error;
 
 
 
 
 
 
 
      -- check result
 
 
 
      for i in 0 to id_c'high loop
 
 
 
        assert id_c(i) = rx_data_2_s(i)
 
 
 
          report "ID mismatch on Pad 2!"
 
 
 
          severity error;
 
 
 
      end loop;
 
 
 
 
 
 
 
    end get_id;
 
 
 
    --
 
 
 
    ---------------------------------------------------------------------------
 
 
 
 
 
  begin
 
  begin
 
    stimuli_2_end_s <= false;
 
    stimuli_2_end_s <= false;
 
 
 
 
 
    pad_data_2_s    <= 'H';
 
    pad_data_2_s    <= 'H';
 
    pad_request_2_s <= '0';
 
    pad_request_2_s <= '0';
 
    tx_size_2_s     <= (others => '0');
 
    tx_size_2_s     <= (others => '0');
 
    tx_command_2_s  <= (others => '0');
 
    tx_command_2_s  <= (others => '0');
 
    rx_size_2_s     <= (others => '0');
 
    rx_size_2_s     <= (others => '0');
 
 
 
    pad_model_data_2_s <= (others => '0');
 
 
 
 
 
    wait until reset_s = '1';
 
    wait until reset_s = '1';
 
    wait for period_c * 4;
 
    wait for period_c * 4;
 
 
 
 
 
 
 
 
 
    issue_command(cmd  => "010000000000001100000010",
 
    get_id;
 
                  size => "11");
 
    timeout_gcpad_x;
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000000000000");
 
 
 
    wait for clocks_per_1us_c * 100 * period_c;
 
 
 
    poll_pad(packet => "0001111111111111111111111111111111111111111111111111111111111111");
 
 
 
    timeout_gcpad_short;
 
 
 
    poll_pad(packet => "0001000010000000000000000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000100010000000000000000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000010010000000000000000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000001010000000000000000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000110000000000000000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000101010101010101010101010101010101010101010101010101010101010");
 
 
 
    poll_pad(packet => "0001010111010101010101010101010101010101010101010101010101010101");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000011000000000000000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010100000000000000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010010000000000000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010001000000000000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000100000000000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000010000000000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000001000000000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000100000000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000010000000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000001000000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000100000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000010000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000001000000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000100000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000010000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000001000000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000100000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000010000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000001000000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000100000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000010000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000001000000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000100000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000010000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000001000000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000100000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000010000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000001000000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000100000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000010000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000001000000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000100000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000010000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000001000000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000100000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000010000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000001000000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000100000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000010000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000001000000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000100000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000010000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000001000000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000100000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000010000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000001000000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000100000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000010000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000001000000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000000100000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000000010000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000000001000");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000000000100");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000000000010");
 
 
 
    poll_pad(packet => "0000000010000000000000000000000000000000000000000000000000000001");
 
 
 
 
 
 
 
 
 
    wait for period_c * 2*40;
 
    wait for period_c * 2*40;
 
    stimuli_2_end_s <= true;
 
    stimuli_2_end_s <= true;
 
    wait;
 
    wait;
Line 414... Line 661... 
 
 
 
 
-------------------------------------------------------------------------------
 
-------------------------------------------------------------------------------
 
-- File History:
 
-- File History:
 
--
 
--
 
-- $Log: not supported by cvs2svn $
 
-- $Log: not supported by cvs2svn $
 
 
 
-- Revision 1.3  2004/10/10 17:27:44  arniml
 
 
 
-- added second pad
 
 
 
-- introduced testbench model for GC controller
 
 
 
--
 
-- Revision 1.2  2004/10/09 17:05:59  arniml
 
-- Revision 1.2  2004/10/09 17:05:59  arniml
 
-- delay assertion of request signal by real time (instead of delta cycles)
 
-- delay assertion of request signal by real time (instead of delta cycles)
 
--
 
--
 
-- Revision 1.1  2004/10/07 21:24:06  arniml
 
-- Revision 1.1  2004/10/07 21:24:06  arniml
 
-- initial check-in
 
-- initial check-in

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