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[/] [udp_ip_stack/] [trunk/] [bench/] [vhdl/] [arp_tb.vhd] - Diff between revs 4 and 8

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Rev 4 Rev 8
Line 14... Line 14...
-- 
-- 
-- Dependencies:
-- Dependencies:
-- 
-- 
-- Revision:
-- Revision:
-- Revision 0.01 - File Created
-- Revision 0.01 - File Created
 
-- Revision 0.02 - Added tests for ARP timeout
-- Additional Comments:
-- Additional Comments:
--
--
-- Notes: 
-- Notes: 
-- This testbench has been automatically generated using types std_logic and
-- This testbench has been automatically generated using types std_logic and
-- std_logic_vector for the ports of the unit under test.  Xilinx recommends
-- std_logic_vector for the ports of the unit under test.  Xilinx recommends
Line 36... Line 37...
ARCHITECTURE behavior OF arp_tb IS
ARCHITECTURE behavior OF arp_tb IS
 
 
    -- Component Declaration for the Unit Under Test (UUT)
    -- Component Declaration for the Unit Under Test (UUT)
 
 
    COMPONENT arp
    COMPONENT arp
    PORT(
         generic (
 
                        CLOCK_FREQ                      : integer := 125000000;                                                 -- freq of data_in_clk -- needed to timout cntr
 
                        ARP_TIMEOUT                     : integer := 60                                                                 -- ARP response timeout (s)
 
                        );
 
    Port (
                        -- lookup request signals
                        -- lookup request signals
                        arp_req_req                     : in arp_req_req_type;
                        arp_req_req                     : in arp_req_req_type;
                        arp_req_rslt            : out arp_req_rslt_type;
                        arp_req_rslt            : out arp_req_rslt_type;
                        -- MAC layer RX signals
                        -- MAC layer RX signals
                        data_in_clk             : in  STD_LOGIC;
                        data_in_clk             : in  STD_LOGIC;
Line 58... Line 63...
                        data_out_last           : out std_logic;                                                                        -- with data out valid indicates the last byte of a frame
                        data_out_last           : out std_logic;                                                                        -- with data out valid indicates the last byte of a frame
                        data_out                                : out std_logic_vector (7 downto 0);             -- ethernet frame (from dst mac addr through to last byte of frame)
                        data_out                                : out std_logic_vector (7 downto 0);             -- ethernet frame (from dst mac addr through to last byte of frame)
                        -- system signals
                        -- system signals
                        our_mac_address         : in STD_LOGIC_VECTOR (47 downto 0);
                        our_mac_address         : in STD_LOGIC_VECTOR (47 downto 0);
                        our_ip_address  : in STD_LOGIC_VECTOR (31 downto 0);
                        our_ip_address  : in STD_LOGIC_VECTOR (31 downto 0);
 
                        control                         : in arp_control_type;
                        req_count                       : out STD_LOGIC_VECTOR(7 downto 0)                       -- count of arp pkts received
                        req_count                       : out STD_LOGIC_VECTOR(7 downto 0)                       -- count of arp pkts received
        );
        );
    END COMPONENT;
    END COMPONENT;
 
 
 
 
Line 81... Line 87...
        signal req_count                        : STD_LOGIC_VECTOR(7 downto 0);
        signal req_count                        : STD_LOGIC_VECTOR(7 downto 0);
        signal arp_req_req              : arp_req_req_type;
        signal arp_req_req              : arp_req_req_type;
        signal arp_req_rslt             : arp_req_rslt_type;
        signal arp_req_rslt             : arp_req_rslt_type;
        signal mac_tx_req                       : std_logic;
        signal mac_tx_req                       : std_logic;
        signal mac_tx_granted   : std_logic;
        signal mac_tx_granted   : std_logic;
 
        signal control                          : arp_control_type;
 
 
 
 
   -- Clock period definitions
   -- Clock period definitions
   constant clk_period : time := 8 ns;
   constant clk_period : time := 8 ns;
 
 
BEGIN
BEGIN
 
 
        -- Instantiate the Unit Under Test (UUT)
        -- Instantiate the Unit Under Test (UUT)
   uut: arp PORT MAP (
   uut: arp generic map (
 
                         CLOCK_FREQ                     => 10,                                          -- artificially low count to enable pragmatic testing
 
                         ARP_TIMEOUT            => 20
 
                         )
 
                         PORT MAP (
                        -- lookup request mappings
                        -- lookup request mappings
                         arp_req_req            => arp_req_req,
                         arp_req_req            => arp_req_req,
                         arp_req_rslt           => arp_req_rslt,
                         arp_req_rslt           => arp_req_rslt,
                        -- rx mappings
                        -- rx mappings
          data_in_clk           => clk,
          data_in_clk           => clk,
Line 111... Line 122...
                         data_out_last          => data_out_last,
                         data_out_last          => data_out_last,
                         data_out                       => data_out,
                         data_out                       => data_out,
                         -- system mappings
                         -- system mappings
          our_mac_address       => our_mac_address,
          our_mac_address       => our_mac_address,
          our_ip_address        => our_ip_address,
          our_ip_address        => our_ip_address,
 
                         control                                => control,
                         req_count                      => req_count
                         req_count                      => req_count
        );
        );
 
 
   -- Clock process definitions
   -- Clock process definitions
   clk_process :process
   clk_process :process
Line 133... Line 145...
      wait for 100 ns;
      wait for 100 ns;
 
 
                our_ip_address <= x"c0a80509";          -- 192.168.5.9
                our_ip_address <= x"c0a80509";          -- 192.168.5.9
                our_mac_address <= x"002320212223";
                our_mac_address <= x"002320212223";
                mac_tx_granted <= '1'; -- FIXME 0
                mac_tx_granted <= '1'; -- FIXME 0
 
                control.clear_cache <= '0';
 
 
                reset <= '1';
                reset <= '1';
      wait for clk_period*10;
      wait for clk_period*10;
                reset <= '0';
                reset <= '0';
      wait for clk_period*5;
      wait for clk_period*5;
Line 146... Line 159...
      -- insert stimulus here
      -- insert stimulus here
                arp_req_req.lookup_req <= '0';
                arp_req_req.lookup_req <= '0';
                arp_req_req.ip <= (others => '0');
                arp_req_req.ip <= (others => '0');
                data_out_ready <= '1';
                data_out_ready <= '1';
 
 
                report "T1:  Send an ARP request: who has 192.168.5.8? Tell 192.168.5.1";
                report "T1:  Send an ARP request: who has 192.168.5.9? Tell 192.168.5.1";
                data_in_valid <= '1';
                data_in_valid <= '1';
                -- dst MAC (bc)
                -- dst MAC (bc)
                data_in <= x"ff"; wait for clk_period;
                data_in <= x"ff"; wait for clk_period;
                data_in <= x"ff"; wait for clk_period;
                data_in <= x"ff"; wait for clk_period;
                data_in <= x"ff"; wait for clk_period;
                data_in <= x"ff"; wait for clk_period;
Line 223... Line 236...
                data_out_ready <= '0';
                data_out_ready <= '0';
                wait for clk_period*2;
                wait for clk_period*2;
                data_out_ready <= '1';
                data_out_ready <= '1';
                wait for clk_period*50;
                wait for clk_period*50;
 
 
                report "T2: Send another ARP request: who has 192.168.5.8? Tell 192.168.5.1, holding off transmitter";
                report "T2: Send another ARP request: who has 192.168.5.9? Tell 192.168.5.1, holding off transmitter";
                data_out_ready <= '0';
                data_out_ready <= '0';
                data_in_valid <= '1';
                data_in_valid <= '1';
                -- dst MAC (bc)
                -- dst MAC (bc)
                data_in <= x"ff"; wait for clk_period;
                data_in <= x"ff"; wait for clk_period;
                data_in <= x"ff"; wait for clk_period;
                data_in <= x"ff"; wait for clk_period;
Line 294... Line 307...
                wait for clk_period*10;
                wait for clk_period*10;
                data_out_ready <= '1';
                data_out_ready <= '1';
 
 
                wait for clk_period*50;
                wait for clk_period*50;
 
 
                -- Send a request for the IP that is already cached
                report "T3 Send a request for the IP that is already cached";
                arp_req_req.ip <= x"c0a80501";
                arp_req_req.ip <= x"c0a80501";
                arp_req_req.lookup_req <= '1';
                arp_req_req.lookup_req <= '1';
                wait for clk_period;
                wait for clk_period;
 
                assert arp_req_rslt.got_mac = '1'                               report "T3: should have got mac";
 
                assert arp_req_rslt.mac = x"00231829267c"               report "T3: incorrect mac";
 
                assert arp_req_rslt.got_err = '0'                                report "T3: should not have got err";
                arp_req_req.lookup_req <= '0';
                arp_req_req.lookup_req <= '0';
 
                wait for clk_period;
 
                wait for clk_period*10;
 
 
                wait for clk_period*50;
                wait for clk_period*20;
 
                assert mac_tx_req = '0'                                          report "T3: should not be requesting TX channel";
 
 
                -- Send a request for the IP that is not cached
                report "T4: Request 192.168.5.3 (not cached= and Send an ARP reply: 192.168.5.3 has mac 02:12:03:23:04:54";
                arp_req_req.ip <= x"c0a80503";
                arp_req_req.ip <= x"c0a80503";
                arp_req_req.lookup_req <= '1';
                arp_req_req.lookup_req <= '1';
                wait for clk_period;
                wait for clk_period;
                arp_req_req.lookup_req <= '0';
                arp_req_req.lookup_req <= '0';
                wait for clk_period*80;
                wait for clk_period*20;
 
                assert mac_tx_req = '1'                                         report "T4: should be requesting TX channel";
 
                wait for clk_period*50;
                -- Send the reply
                -- Send the reply
                data_out_ready <= '1';
                data_out_ready <= '1';
 
 
                report "T3: Send an ARP reply: 192.168.5.3 has mac 02:12:03:23:04:54";
 
                data_in_valid <= '1';
                data_in_valid <= '1';
                -- dst MAC (bc)
                -- dst MAC (bc)
                data_in <= x"ff"; wait for clk_period;
                data_in <= x"ff"; wait for clk_period;
                data_in <= x"ff"; wait for clk_period;
                data_in <= x"ff"; wait for clk_period;
                data_in <= x"ff"; wait for clk_period;
                data_in <= x"ff"; wait for clk_period;
Line 374... Line 394...
                data_in <= x"00"; wait for clk_period;
                data_in <= x"00"; wait for clk_period;
                data_in_last <= '1';
                data_in_last <= '1';
                data_in <= x"00"; wait for clk_period;
                data_in <= x"00"; wait for clk_period;
                data_in_last <= '0';
                data_in_last <= '0';
                data_in_valid <= '0';
                data_in_valid <= '0';
 
                wait for clk_period;
 
                assert arp_req_rslt.got_mac = '1'                               report "T4: should have got mac";
 
                assert arp_req_rslt.mac = x"021203230454"               report "T4: incorrect mac";
 
                assert arp_req_rslt.got_err = '0'                                report "T4: should not have got err";
 
                wait for clk_period*10;
 
 
 
                report "T5: Request 192.168.5.4 (not cached), dont send a reply and wait for timeout";
 
                arp_req_req.ip <= x"c0a80504";
 
                arp_req_req.lookup_req <= '1';
 
                wait for clk_period;
 
                arp_req_req.lookup_req <= '0';
 
                wait for clk_period*20;
 
                assert mac_tx_req = '1'                                         report "T5: should be requesting TX channel";
 
                wait for clk_period*200;
 
                assert arp_req_rslt.got_mac = '0'                report "T5: should not have got mac";
 
                assert arp_req_rslt.got_err = '1'               report "T5: should have got err";
 
 
 
                report "T6: Request 192.168.5.7 (not cached= and Send an ARP reply: 192.168.5.7 has mac 02:15:03:23:04:54";
 
                arp_req_req.ip <= x"c0a80507";
 
                arp_req_req.lookup_req <= '1';
 
                wait for clk_period;
 
                assert arp_req_rslt.got_mac = '0'                                report "T6: should not yet have mac";
 
                assert arp_req_rslt.got_err = '0'                                report "T6: should not have got err";
 
 
 
                arp_req_req.lookup_req <= '0';
 
                wait for clk_period*20;
 
                assert mac_tx_req = '1'                                         report "T6: should be requesting TX channel";
 
                wait for clk_period*50;
 
                -- Send the reply
 
                data_out_ready <= '1';
 
 
 
                data_in_valid <= '1';
 
                -- dst MAC (bc)
 
                data_in <= x"ff"; wait for clk_period;
 
                data_in <= x"ff"; wait for clk_period;
 
                data_in <= x"ff"; wait for clk_period;
 
                data_in <= x"ff"; wait for clk_period;
 
                data_in <= x"ff"; wait for clk_period;
 
                data_in <= x"ff"; wait for clk_period;
 
                -- src MAC
 
                data_in <= x"02"; wait for clk_period;
 
                data_in <= x"15"; wait for clk_period;
 
                data_in <= x"03"; wait for clk_period;
 
                data_in <= x"23"; wait for clk_period;
 
                data_in <= x"04"; wait for clk_period;
 
                data_in <= x"54"; wait for clk_period;
 
                -- type
 
                data_in <= x"08"; wait for clk_period;
 
                data_in <= x"06"; wait for clk_period;
 
                -- HW type
 
                data_in <= x"00"; wait for clk_period;
 
                data_in <= x"01"; wait for clk_period;
 
                -- Protocol type
 
                data_in <= x"08"; wait for clk_period;
 
                data_in <= x"00"; wait for clk_period;
 
                -- HW size
 
                data_in <= x"06"; wait for clk_period;
 
                -- protocol size
 
                data_in <= x"04"; wait for clk_period;
 
                -- Opcode
 
                data_in <= x"00"; wait for clk_period;
 
                data_in <= x"02"; wait for clk_period;
 
                -- Sender MAC
 
                data_in <= x"02"; wait for clk_period;
 
                data_in <= x"15"; wait for clk_period;
 
                data_in <= x"03"; wait for clk_period;
 
                data_in <= x"23"; wait for clk_period;
 
                data_in <= x"04"; wait for clk_period;
 
                data_in <= x"54"; wait for clk_period;
 
                -- Sender IP
 
                data_in <= x"c0"; wait for clk_period;
 
                data_in <= x"a8"; wait for clk_period;
 
                data_in <= x"05"; wait for clk_period;
 
                data_in <= x"07"; wait for clk_period;
 
                -- Target MAC
 
                data_in <= x"00"; wait for clk_period;
 
                data_in <= x"23"; wait for clk_period;
 
                data_in <= x"20"; wait for clk_period;
 
                data_in <= x"21"; wait for clk_period;
 
                data_in <= x"22"; wait for clk_period;
 
                data_in <= x"23"; wait for clk_period;
 
                -- Target IP
 
                data_in <= x"c0"; wait for clk_period;
 
                data_in <= x"a8"; wait for clk_period;
 
                data_in <= x"05"; wait for clk_period;
 
                data_in <= x"09"; wait for clk_period;
 
                data_in <= x"00"; wait for clk_period;
 
                data_in <= x"00"; wait for clk_period;
 
                data_in <= x"00"; wait for clk_period;
 
                data_in_last <= '1';
 
                data_in <= x"00"; wait for clk_period;
 
                data_in_last <= '0';
 
                data_in_valid <= '0';
 
                wait for clk_period;
 
                assert arp_req_rslt.got_mac = '1'                               report "T6: should have got mac";
 
                assert arp_req_rslt.mac = x"021503230454"               report "T6: incorrect mac";
 
                assert arp_req_rslt.got_err = '0'                                report "T6: should not have got err";
 
                wait for clk_period*10;
 
 
 
                report "T7: Request 192.168.5.7 again an expect it to be in the cache";
 
                arp_req_req.ip <= x"c0a80507";
 
                arp_req_req.lookup_req <= '1';
 
                wait for clk_period;
 
                assert arp_req_rslt.got_mac = '1'                               report "T7: should have mac";
 
                assert arp_req_rslt.got_err = '0'                                report "T7: should not have got err";
 
 
 
                arp_req_req.lookup_req <= '0';
 
                wait for clk_period*20;
 
 
 
                report "T8: Clear the cache, Request 192.168.5.7 again an expect a 'who has' to be sent";
 
                control.clear_cache <= '1';
 
                wait for clk_period;
 
                control.clear_cache <= '0';
 
                wait for clk_period;
 
 
 
                arp_req_req.ip <= x"c0a80507";
 
                arp_req_req.lookup_req <= '1';
 
                wait for clk_period;
 
                assert arp_req_rslt.got_mac = '0'                                report "T8: should not yet have mac";
 
                assert arp_req_rslt.got_err = '0'                                report "T8: should not have got err";
 
 
 
                arp_req_req.lookup_req <= '0';
 
                wait for clk_period*20;
 
 
 
 
 
                assert mac_tx_req = '1'                                                         report "T8: should be requesting TX channel";
 
                wait for clk_period*50;
 
                -- Send the reply
 
                data_out_ready <= '1';
 
 
 
                data_in_valid <= '1';
 
                -- dst MAC (bc)
 
                data_in <= x"ff"; wait for clk_period;
 
                data_in <= x"ff"; wait for clk_period;
 
                data_in <= x"ff"; wait for clk_period;
 
                data_in <= x"ff"; wait for clk_period;
 
                data_in <= x"ff"; wait for clk_period;
 
                data_in <= x"ff"; wait for clk_period;
 
                -- src MAC
 
                data_in <= x"02"; wait for clk_period;
 
                data_in <= x"15"; wait for clk_period;
 
                data_in <= x"03"; wait for clk_period;
 
                data_in <= x"23"; wait for clk_period;
 
                data_in <= x"04"; wait for clk_period;
 
                data_in <= x"54"; wait for clk_period;
 
                -- type
 
                data_in <= x"08"; wait for clk_period;
 
                data_in <= x"06"; wait for clk_period;
 
                -- HW type
 
                data_in <= x"00"; wait for clk_period;
 
                data_in <= x"01"; wait for clk_period;
 
                -- Protocol type
 
                data_in <= x"08"; wait for clk_period;
 
                data_in <= x"00"; wait for clk_period;
 
                -- HW size
 
                data_in <= x"06"; wait for clk_period;
 
                -- protocol size
 
                data_in <= x"04"; wait for clk_period;
 
                -- Opcode
 
                data_in <= x"00"; wait for clk_period;
 
                data_in <= x"02"; wait for clk_period;
 
                -- Sender MAC
 
                data_in <= x"02"; wait for clk_period;
 
                data_in <= x"15"; wait for clk_period;
 
                data_in <= x"03"; wait for clk_period;
 
                data_in <= x"23"; wait for clk_period;
 
                data_in <= x"55"; wait for clk_period;
 
                data_in <= x"54"; wait for clk_period;
 
                -- Sender IP
 
                data_in <= x"c0"; wait for clk_period;
 
                data_in <= x"a8"; wait for clk_period;
 
                data_in <= x"05"; wait for clk_period;
 
                data_in <= x"07"; wait for clk_period;
 
                -- Target MAC
 
                data_in <= x"00"; wait for clk_period;
 
                data_in <= x"23"; wait for clk_period;
 
                data_in <= x"20"; wait for clk_period;
 
                data_in <= x"21"; wait for clk_period;
 
                data_in <= x"22"; wait for clk_period;
 
                data_in <= x"23"; wait for clk_period;
 
                -- Target IP
 
                data_in <= x"c0"; wait for clk_period;
 
                data_in <= x"a8"; wait for clk_period;
 
                data_in <= x"05"; wait for clk_period;
 
                data_in <= x"09"; wait for clk_period;
 
                data_in <= x"00"; wait for clk_period;
 
                data_in <= x"00"; wait for clk_period;
 
                data_in <= x"00"; wait for clk_period;
 
                data_in_last <= '1';
 
                data_in <= x"00"; wait for clk_period;
 
                data_in_last <= '0';
 
                data_in_valid <= '0';
 
                wait for clk_period;
 
                assert arp_req_rslt.got_mac = '1'                               report "T8: should have got mac";
 
                assert arp_req_rslt.mac = x"021503235554"               report "T8: incorrect mac";
 
                assert arp_req_rslt.got_err = '0'                                report "T8: should not have got err";
 
                wait for clk_period*10;
 
 
                report "--- end of tests ---";
                report "--- end of tests ---";
      wait;
      wait;
   end process;
   end process;
 
 

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