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/udp_ip_stack/tags/v1.3/bench/vhdl/IP_complete_nomac_tb.vhd
0,0 → 1,396
-------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: |
-- |
-- Create Date: 13:54:32 06/04/2011 |
-- Design Name: |
-- Module Name: C:/Users/pjf/Documents/projects/fpga/xilinx/Network/ip1/IP_complete_nomac_tb.vhd |
-- Project Name: ip1 |
-- Target Device: |
-- Tool versions: |
-- Description: |
-- |
-- VHDL Test Bench Created by ISE for module: IP_complete_nomac |
-- |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Additional Comments: |
-- |
-- Notes: |
-- This testbench has been automatically generated using types std_logic and |
-- std_logic_vector for the ports of the unit under test. Xilinx recommends |
-- that these types always be used for the top-level I/O of a design in order |
-- to guarantee that the testbench will bind correctly to the post-implementation |
-- simulation model. |
-------------------------------------------------------------------------------- |
LIBRARY ieee; |
USE ieee.std_logic_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.axi.all; |
use work.ipv4_types.all; |
use work.arp_types.all; |
|
ENTITY IP_complete_nomac_tb IS |
END IP_complete_nomac_tb; |
|
ARCHITECTURE behavior OF IP_complete_nomac_tb IS |
|
-- Component Declaration for the Unit Under Test (UUT) |
|
COMPONENT IP_complete_nomac |
generic ( |
CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr |
ARP_TIMEOUT : integer := 60 -- ARP response timeout (s) |
); |
Port ( |
-- IP Layer signals |
ip_tx_start : in std_logic; |
ip_tx : in ipv4_tx_type; -- IP tx cxns |
ip_tx_result : out std_logic_vector (1 downto 0); -- tx status (changes during transmission) |
ip_tx_data_out_ready : out std_logic; -- indicates IP TX is ready to take data |
ip_rx_start : out std_logic; -- indicates receipt of ip frame. |
ip_rx : out ipv4_rx_type; |
-- system signals |
rx_clk : in STD_LOGIC; |
tx_clk : in STD_LOGIC; |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
our_mac_address : in std_logic_vector (47 downto 0); |
control : in ip_control_type; |
-- status signals |
arp_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- count of arp pkts received |
ip_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us |
-- MAC Transmitter |
mac_tx_tdata : out std_logic_vector(7 downto 0); -- data byte to tx |
mac_tx_tvalid : out std_logic; -- tdata is valid |
mac_tx_tready : in std_logic; -- mac is ready to accept data |
mac_tx_tfirst : out std_logic; -- indicates first byte of frame |
mac_tx_tlast : out std_logic; -- indicates last byte of frame |
-- MAC Receiver |
mac_rx_tdata : in std_logic_vector(7 downto 0); -- data byte received |
mac_rx_tvalid : in std_logic; -- indicates tdata is valid |
mac_rx_tready : out std_logic; -- tells mac that we are ready to take data |
mac_rx_tlast : in std_logic -- indicates last byte of the trame |
); |
END COMPONENT; |
|
|
--Inputs |
signal ip_tx_start : std_logic := '0'; |
signal ip_tx : ipv4_tx_type; |
|
signal clk : std_logic := '0'; |
signal reset : std_logic := '0'; |
signal our_ip_address : std_logic_vector(31 downto 0) := (others => '0'); |
signal our_mac_address : std_logic_vector(47 downto 0) := (others => '0'); |
signal mac_tx_tready : std_logic := '0'; |
signal mac_rx_tdata : std_logic_vector(7 downto 0) := (others => '0'); |
signal mac_rx_tvalid : std_logic := '0'; |
signal mac_rx_tlast : std_logic := '0'; |
signal control : ip_control_type; |
|
--Outputs |
signal ip_tx_result : std_logic_vector (1 downto 0); -- tx status (changes during transmission) |
signal ip_tx_data_out_ready : std_logic; -- indicates IP TX is ready to take data |
signal ip_rx_start : std_logic; |
signal ip_rx : ipv4_rx_type; |
signal arp_pkt_count : std_logic_vector(7 downto 0); |
signal mac_tx_tdata : std_logic_vector(7 downto 0); |
signal mac_tx_tvalid : std_logic; |
signal mac_tx_tfirst : std_logic; |
signal mac_tx_tlast : std_logic; |
signal mac_rx_tready : std_logic; |
|
-- Clock period definitions |
constant clk_period : time := 8 ns; |
|
BEGIN |
|
-- Instantiate the Unit Under Test (UUT) |
uut: IP_complete_nomac PORT MAP ( |
ip_tx_start => ip_tx_start, |
ip_tx => ip_tx, |
ip_tx_result => ip_tx_result, |
ip_tx_data_out_ready => ip_tx_data_out_ready, |
ip_rx_start => ip_rx_start, |
ip_rx => ip_rx, |
rx_clk => clk, |
tx_clk => clk, |
reset => reset, |
our_ip_address => our_ip_address, |
our_mac_address => our_mac_address, |
control => control, |
arp_pkt_count => arp_pkt_count, |
mac_tx_tdata => mac_tx_tdata, |
mac_tx_tvalid => mac_tx_tvalid, |
mac_tx_tready => mac_tx_tready, |
mac_tx_tfirst => mac_tx_tfirst, |
mac_tx_tlast => mac_tx_tlast, |
mac_rx_tdata => mac_rx_tdata, |
mac_rx_tvalid => mac_rx_tvalid, |
mac_rx_tready => mac_rx_tready, |
mac_rx_tlast => mac_rx_tlast |
); |
|
-- Clock process definitions |
clk_process :process |
begin |
clk <= '1'; |
wait for clk_period/2; |
clk <= '0'; |
wait for clk_period/2; |
end process; |
|
|
-- Stimulus process |
stim_proc: process |
begin |
-- hold reset state for 100 ns. |
wait for 80 ns; |
|
our_ip_address <= x"c0a80509"; -- 192.168.5.9 |
our_mac_address <= x"002320212223"; |
control.arp_controls.clear_cache <= '0'; |
ip_tx_start <= '0'; |
mac_tx_tready <= '0'; |
|
reset <= '1'; |
wait for clk_period*10; |
reset <= '0'; |
wait for clk_period*5; |
|
-- check reset conditions |
assert ip_tx_result = IPTX_RESULT_NONE report "ip_tx_result not initialised correctly on reset"; |
assert ip_tx_data_out_ready = '0' report "ip_tx_data_out_ready not initialised correctly on reset"; |
assert mac_tx_tvalid = '0' report "mac_tx_tvalid not initialised correctly on reset"; |
assert mac_tx_tlast = '0' report " mac_tx_tlast not initialised correctly on reset"; |
assert arp_pkt_count = x"00" report " arp_pkt_count not initialised correctly on reset"; |
assert ip_rx_start = '0' report "ip_rx_start not initialised correctly on reset"; |
assert ip_rx.hdr.is_valid = '0' report "ip_rx.hdr.is_valid not initialised correctly on reset"; |
assert ip_rx.hdr.protocol = x"00" report "ip_rx.hdr.protocol not initialised correctly on reset"; |
assert ip_rx.hdr.data_length = x"0000" report "ip_rx.hdr.data_length not initialised correctly on reset"; |
assert ip_rx.hdr.src_ip_addr = x"00000000" report "ip_rx.hdr.src_ip_addr not initialised correctly on reset"; |
assert ip_rx.hdr.num_frame_errors = x"00" report "ip_rx.hdr.num_frame_errors not initialised correctly on reset"; |
assert ip_rx.data.data_in = x"00" report "ip_rx.data.data_in not initialised correctly on reset"; |
assert ip_rx.data.data_in_valid = '0' report "ip_rx.data.data_in_valid not initialised correctly on reset"; |
assert ip_rx.data.data_in_last = '0' report "ip_rx.data.data_in_last not initialised correctly on reset"; |
|
-- insert stimulus here |
|
------------ |
-- TEST 1 -- basic functional rx test with received ip pkt |
------------ |
|
report "T1: Send an eth frame with IP pkt dst ip_address c0a80509, dst mac 002320212223"; |
|
mac_tx_tready <= '1'; |
mac_rx_tvalid <= '1'; |
-- dst MAC (bc) |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"20"; wait for clk_period; |
mac_rx_tdata <= x"21"; wait for clk_period; |
mac_rx_tdata <= x"22"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
-- src MAC |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"18"; wait for clk_period; |
mac_rx_tdata <= x"29"; wait for clk_period; |
mac_rx_tdata <= x"26"; wait for clk_period; |
mac_rx_tdata <= x"7c"; wait for clk_period; |
-- type |
mac_rx_tdata <= x"08"; wait for clk_period; -- IP pkt |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- ver & HL / service type |
mac_rx_tdata <= x"45"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- total len |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"18"; wait for clk_period; |
-- ID |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- flags & frag |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- TTL |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- Protocol |
mac_rx_tdata <= x"11"; wait for clk_period; |
-- Header CKS |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- SRC IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"01"; wait for clk_period; |
-- DST IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"09"; wait for clk_period; |
|
-- user data |
mac_rx_tdata <= x"24"; wait for clk_period; |
|
-- since we are up to the user data stage, the header should be valid and the data_in_valid should be set |
assert ip_rx.hdr.is_valid = '1' report "T1: ip_rx.hdr.is_valid not set"; |
assert ip_rx.hdr.protocol = x"11" report "T1: ip_rx.hdr.protocol not set correctly"; |
assert ip_rx.hdr.data_length = x"0004" report "T1: ip_rx.hdr.data_length not set correctly"; |
assert ip_rx.hdr.src_ip_addr = x"c0a80501" report "T1: ip_rx.hdr.src_ip_addr not set correctly"; |
assert ip_rx.hdr.num_frame_errors = x"00" report "T1: ip_rx.hdr.num_frame_errors not set correctly"; |
assert ip_rx.hdr.last_error_code = x"0" report "T1: ip_rx.hdr.last_error_code not set correctly"; |
assert ip_rx_start = '1' report "T1: ip_rx_start not set"; |
assert ip_rx.data.data_in_valid = '1' report "T1: ip_rx.data.data_in_valid not set"; |
|
mac_rx_tdata <= x"25"; wait for clk_period; |
mac_rx_tdata <= x"26"; wait for clk_period; |
mac_rx_tdata <= x"27"; mac_rx_tlast <= '1'; wait for clk_period; |
|
assert ip_rx.data.data_in_last = '1' report "T1: ip_rx.data.data_in_last not set"; |
|
|
mac_rx_tdata <= x"00"; |
mac_rx_tlast <= '0'; |
mac_rx_tvalid <= '0'; |
wait for clk_period; |
|
assert ip_rx.data.data_in_valid = '0' report "T1: ip_rx.data.data_in_valid not cleared"; |
assert ip_rx.data.data_in_last = '0' report "T1: ip_rx.data.data_in_last not cleared"; |
assert ip_rx.hdr.num_frame_errors = x"00" report "T1: ip_rx.hdr.num_frame_errors non zero at end of test"; |
assert ip_rx.hdr.last_error_code = x"0" report "T1: ip_rx.hdr.last_error_code indicates error at end of test"; |
assert ip_rx_start = '0' report "T1: ip_rx_start not cleared"; |
|
------------ |
-- TEST 2 -- respond with IP TX |
------------ |
|
report "T2: respond with IP TX"; |
|
ip_tx.hdr.protocol <= x"35"; |
ip_tx.hdr.data_length <= x"0006"; |
ip_tx.hdr.dst_ip_addr <= x"c0123478"; |
ip_tx.data.data_out_valid <= '0'; |
ip_tx.data.data_out_last <= '0'; |
wait for clk_period; |
|
ip_tx_start <= '1'; wait for clk_period; |
|
ip_tx_start <= '0'; wait for clk_period; |
|
assert ip_tx_result = IPTX_RESULT_SENDING report "T1: result should be IPTX_RESULT_SENDING"; |
|
wait for clk_period*2; |
|
assert ip_tx_data_out_ready = '0' report "T2: IP data out ready asserted too early"; |
|
-- need to wait for ARP tx to complete |
|
wait for clk_period*50; |
|
assert mac_tx_tvalid = '0' report "T2: mac_tx_tvalid not cleared after ARP tx"; |
assert mac_tx_tlast = '0' report "T2: mac_tx_tlast not cleared after ARP tx"; |
|
-- now create the ARP response (rx) |
|
-- Send the reply |
-- Send an ARP reply: x"c0123478" has mac 02:12:03:23:04:54 |
mac_rx_tvalid <= '1'; |
-- dst MAC (bc) |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
-- src MAC |
mac_rx_tdata <= x"02"; wait for clk_period; |
mac_rx_tdata <= x"12"; wait for clk_period; |
mac_rx_tdata <= x"03"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"04"; wait for clk_period; |
mac_rx_tdata <= x"54"; wait for clk_period; |
-- type |
mac_rx_tdata <= x"08"; wait for clk_period; |
mac_rx_tdata <= x"06"; wait for clk_period; |
-- HW type |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"01"; wait for clk_period; |
-- Protocol type |
mac_rx_tdata <= x"08"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- HW size |
mac_rx_tdata <= x"06"; wait for clk_period; |
-- protocol size |
mac_rx_tdata <= x"04"; wait for clk_period; |
-- Opcode |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"02"; wait for clk_period; |
-- Sender MAC |
mac_rx_tdata <= x"02"; wait for clk_period; |
mac_rx_tdata <= x"12"; wait for clk_period; |
mac_rx_tdata <= x"03"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"04"; wait for clk_period; |
mac_rx_tdata <= x"54"; wait for clk_period; |
-- Sender IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"12"; wait for clk_period; |
mac_rx_tdata <= x"34"; wait for clk_period; |
mac_rx_tdata <= x"78"; wait for clk_period; |
-- Target MAC |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"20"; wait for clk_period; |
mac_rx_tdata <= x"21"; wait for clk_period; |
mac_rx_tdata <= x"22"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
-- Target IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"09"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tlast <= '1'; |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tlast <= '0'; |
mac_rx_tvalid <= '0'; |
|
wait until ip_tx_data_out_ready = '1'; |
|
-- start to tx IP data |
ip_tx.data.data_out_valid <= '1'; |
ip_tx.data.data_out <= x"56"; wait for clk_period; |
ip_tx.data.data_out <= x"57"; wait for clk_period; |
ip_tx.data.data_out <= x"58"; wait for clk_period; |
ip_tx.data.data_out <= x"59"; wait for clk_period; |
ip_tx.data.data_out <= x"5a"; wait for clk_period; |
|
ip_tx.data.data_out <= x"5b"; |
ip_tx.data.data_out_last <= '1'; |
wait for clk_period; |
|
assert mac_tx_tlast = '1' report "T1: mac_tx_tlast not set on last byte"; |
|
wait for clk_period; |
|
ip_tx.data.data_out_valid <= '0'; |
ip_tx.data.data_out_last <= '0'; |
wait for clk_period*2; |
|
assert ip_tx_result = IPTX_RESULT_SENT report "T1: result should be SENT"; |
wait for clk_period*2; |
|
|
report "-- end of tests --"; |
|
wait; |
end process; |
|
END; |
/udp_ip_stack/tags/v1.3/bench/vhdl/IPv4_TX_tb.vhd
0,0 → 1,363
-------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: |
-- |
-- Create Date: 09:35:58 06/03/2011 |
-- Design Name: |
-- Module Name: C:/Users/pjf/Documents/projects/fpga/xilinx/Network/ip1/IPv4_TX_tb.vhd |
-- Project Name: ip1 |
-- Target Device: |
-- Tool versions: |
-- Description: |
-- |
-- VHDL Test Bench Created by ISE for module: IPv4_TX |
-- |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Revision 0.02 - Added test for IP broadcast tx |
-- Additional Comments: |
-- |
-- Notes: |
-- This testbench has been automatically generated using types std_logic and |
-- std_logic_vector for the ports of the unit under test. Xilinx recommends |
-- that these types always be used for the top-level I/O of a design in order |
-- to guarantee that the testbench will bind correctly to the post-implementation |
-- simulation model. |
-------------------------------------------------------------------------------- |
LIBRARY ieee; |
USE ieee.std_logic_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.axi.all; |
use work.ipv4_types.all; |
use work.arp_types.all; |
|
|
ENTITY IPv4_TX_tb IS |
END IPv4_TX_tb; |
|
ARCHITECTURE behavior OF IPv4_TX_tb IS |
|
-- Component Declaration for the Unit Under Test (UUT) |
|
COMPONENT IPv4_TX |
PORT( |
-- IP Layer signals |
ip_tx_start : in std_logic; |
ip_tx : in ipv4_tx_type; -- IP tx cxns |
ip_tx_result : out std_logic_vector (1 downto 0); -- tx status (changes during transmission) |
ip_tx_data_out_ready : out std_logic; -- indicates IP TX is ready to take data |
|
-- system signals |
clk : in STD_LOGIC; -- same clock used to clock mac data and ip data |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
our_mac_address : in std_logic_vector (47 downto 0); |
-- ARP lookup signals |
arp_req_req : out arp_req_req_type; |
arp_req_rslt : in arp_req_rslt_type; |
-- MAC layer TX signals |
mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx) |
mac_tx_granted : in std_logic; -- indicates that access to channel has been granted |
mac_data_out_ready : in std_logic; -- indicates system ready to consume data |
mac_data_out_valid : out std_logic; -- indicates data out is valid |
mac_data_out_first : out std_logic; -- with data out valid indicates the first byte of a frame |
mac_data_out_last : out std_logic; -- with data out valid indicates the last byte of a frame |
mac_data_out : out std_logic_vector (7 downto 0) -- ethernet frame (from dst mac addr through to last byte of frame) |
); |
END COMPONENT; |
|
|
--Inputs |
signal ip_tx_start : std_logic := '0'; |
signal ip_tx : ipv4_tx_type; |
signal clk : std_logic := '0'; |
signal reset : std_logic := '0'; |
signal our_ip_address : std_logic_vector(31 downto 0) := (others => '0'); |
signal our_mac_address : std_logic_vector(47 downto 0) := (others => '0'); |
signal mac_tx_granted : std_logic := '0'; |
signal mac_data_out_ready : std_logic := '0'; |
signal arp_req_rslt : arp_req_rslt_type; |
|
--Outputs |
signal ip_tx_result : std_logic_vector (1 downto 0); -- tx status (changes during transmission) |
signal ip_tx_data_out_ready : std_logic; -- indicates IP TX is ready to take data |
signal mac_tx_req : std_logic; |
signal mac_data_out_valid : std_logic; |
signal mac_data_out_last : std_logic; |
signal mac_data_out_first : std_logic; |
signal mac_data_out : std_logic_vector(7 downto 0); |
signal arp_req_req : arp_req_req_type; |
|
-- Clock period definitions |
constant clk_period : time := 8 ns; |
|
BEGIN |
|
-- Instantiate the Unit Under Test (UUT) |
uut: IPv4_TX PORT MAP ( |
ip_tx_start => ip_tx_start, |
ip_tx => ip_tx, |
ip_tx_result => ip_tx_result, |
ip_tx_data_out_ready => ip_tx_data_out_ready, |
clk => clk, |
reset => reset, |
our_ip_address => our_ip_address, |
our_mac_address => our_mac_address, |
arp_req_req => arp_req_req, |
arp_req_rslt => arp_req_rslt, |
mac_tx_req => mac_tx_req, |
mac_tx_granted => mac_tx_granted, |
mac_data_out_ready => mac_data_out_ready, |
mac_data_out_valid => mac_data_out_valid, |
mac_data_out_first => mac_data_out_first, |
mac_data_out_last => mac_data_out_last, |
mac_data_out => mac_data_out |
); |
|
-- Clock process definitions |
clk_process :process |
begin |
clk <= '0'; |
wait for clk_period/2; |
clk <= '1'; |
wait for clk_period/2; |
end process; |
|
|
-- Stimulus process |
stim_proc: process |
begin |
our_ip_address <= x"c0a80509"; -- 192.168.5.9 |
our_mac_address <= x"002320212223"; |
ip_tx_start <= '0'; |
mac_tx_granted <= '0'; |
mac_data_out_ready <= '0'; |
ip_tx.data.data_out_valid <= '0'; |
ip_tx.data.data_out_last <= '0'; |
arp_req_rslt.got_mac <= '0'; |
arp_req_rslt.got_err <= '0'; |
arp_req_rslt.mac <= (others => '0'); |
|
reset <= '1'; |
wait for clk_period*10; |
reset <= '0'; |
wait for clk_period*5; |
|
-- check reset conditions |
assert arp_req_req.lookup_req = '0' report "arp_req_req.lookup_req not initialised correctly on reset"; |
assert ip_tx_result = IPTX_RESULT_NONE report "ip_tx_result not initialised correctly on reset"; |
assert ip_tx_data_out_ready = '0' report "ip_tx_data_out_ready not initialised correctly on reset"; |
assert mac_tx_req = '0' report "mac_tx_req not initialised correctly on reset"; |
assert mac_data_out_valid = '0' report "mac_data_out_valid not initialised correctly on reset"; |
assert mac_data_out_last = '0' report "mac_data_out_last not initialised correctly on reset"; |
|
-- insert stimulus here |
|
------------ |
-- TEST 1 -- basic functional tx test with some delays for arp and chn access |
------------ |
|
report "T1: basic functional tx test with some delays for arp and chn access"; |
|
ip_tx.hdr.protocol <= x"35"; |
ip_tx.hdr.data_length <= x"0008"; |
ip_tx.hdr.dst_ip_addr <= x"c0123478"; |
ip_tx_start <= '1'; |
wait for clk_period; |
ip_tx_start <= '0'; |
arp_req_rslt.got_mac <= '0'; |
arp_req_rslt.got_err <= '0'; |
|
assert arp_req_req.lookup_req = '1' report "T1: lookup_req not set on tx start"; |
wait for clk_period; |
assert ip_tx_result = IPTX_RESULT_SENDING report "T1: result should be IPTX_RESULT_SENDING"; |
|
wait for clk_period*10; -- simulate arp lookup time |
arp_req_rslt.mac <= x"050423271016"; |
arp_req_rslt.got_mac <= '1'; |
|
wait for clk_period*2; |
|
assert arp_req_req.lookup_req = '0' report "T1: lookup_req not clear after setting"; |
assert mac_tx_req = '1' report "T1: mac_tx_req not set after getting mac"; |
|
wait for clk_period*10; -- simulate mac chn access time |
mac_tx_granted <= '1'; |
wait for clk_period*2; |
mac_data_out_ready <= '1'; |
assert mac_data_out_valid = '0' report "T1: mac_data_out_valid asserted too early"; |
|
wait for clk_period; |
|
assert ip_tx_data_out_ready = '0' report "T1: IP data out ready asserted too early"; |
wait for clk_period; |
assert mac_data_out_valid = '1' report "T1: mac_data_out_valid not asserted"; |
|
-- wait until in eth hdr |
wait for clk_period*3; |
-- go mac not ready for 2 clocks |
mac_data_out_ready <= '0'; |
wait for clk_period*2; |
mac_data_out_ready <= '1'; |
|
|
wait until ip_tx_data_out_ready = '1'; |
|
-- start to tx IP data |
ip_tx.data.data_out_valid <= '1'; |
ip_tx.data.data_out <= x"56"; wait for clk_period; |
-- delay data in for 1 clk cycle |
ip_tx.data.data_out_valid <= '0'; |
ip_tx.data.data_out <= x"57"; wait for clk_period; |
ip_tx.data.data_out_valid <= '1'; wait for clk_period; |
ip_tx.data.data_out <= x"58"; wait for clk_period; |
ip_tx.data.data_out <= x"59"; wait for clk_period; |
|
-- delay mac ready for 2 clk cycles |
mac_data_out_ready <= '0'; |
ip_tx.data.data_out <= x"5a"; wait for clk_period; |
assert ip_tx_data_out_ready = '0' report "T1: ip_tx_data_out_ready not cleared when mac not ready"; |
|
ip_tx.data.data_out <= x"5a"; wait for clk_period; |
mac_data_out_ready <= '1'; |
wait until ip_tx_data_out_ready = '1'; |
wait for clk_period; |
assert ip_tx_data_out_ready = '1' report "T1: ip_tx_data_out_ready not set when mac ready"; |
ip_tx.data.data_out <= x"5b"; wait for clk_period; |
ip_tx.data.data_out <= x"5c"; wait for clk_period; |
|
ip_tx.data.data_out <= x"5d"; |
ip_tx.data.data_out_last <= '1'; |
wait for clk_period; |
assert mac_data_out_last = '1' report "T1: mac_datda_out_last not set on last byte"; |
|
ip_tx.data.data_out_valid <= '0'; |
ip_tx.data.data_out_last <= '0'; |
wait for clk_period*2; |
|
assert ip_tx_result = IPTX_RESULT_SENT report "T1: result should be IPTX_RESULT_SENT"; |
assert mac_tx_req = '0' report "T1: mac_tx_req held on too long after TX"; |
|
mac_tx_granted <= '0'; |
wait for clk_period*2; |
|
------------ |
-- TEST 2 -- basic functional tx test with no delays for arp and chn access |
------------ |
|
report "T2: basic functional tx test with no delays for arp and chn access"; |
|
ip_tx.hdr.protocol <= x"11"; |
ip_tx.hdr.data_length <= x"0006"; |
ip_tx.hdr.dst_ip_addr <= x"c0123478"; |
ip_tx_start <= '1'; |
wait for clk_period; |
ip_tx_start <= '0'; wait for clk_period; |
arp_req_rslt.got_mac <= '0'; |
|
assert arp_req_req.lookup_req = '1' report "T2: lookup_req not set on tx start"; |
assert ip_tx_result = IPTX_RESULT_SENDING report "T2: result should be IPTX_RESULT_SENDING"; |
|
wait for clk_period; -- simulate arp lookup time |
arp_req_rslt.mac <= x"050423271016"; |
arp_req_rslt.got_mac <= '1'; |
|
wait for clk_period*2; |
|
assert arp_req_req.lookup_req = '0' report "T2: lookup_req not clear after setting"; |
assert mac_tx_req = '1' report "T2: mac_tx_req not set after getting mac"; |
|
wait for clk_period; -- simulate mac chn access time |
mac_tx_granted <= '1'; |
wait for clk_period*2; |
mac_data_out_ready <= '1'; |
|
assert ip_tx_data_out_ready = '0' report "T2: IP data out ready asserted too early"; |
|
wait until ip_tx_data_out_ready = '1'; |
|
-- start to tx IP data |
ip_tx.data.data_out_valid <= '1'; |
ip_tx.data.data_out <= x"c1"; wait for clk_period; |
ip_tx.data.data_out <= x"c2"; wait for clk_period; |
ip_tx.data.data_out <= x"c3"; wait for clk_period; |
ip_tx.data.data_out <= x"c4"; wait for clk_period; |
ip_tx.data.data_out <= x"c5"; wait for clk_period; |
|
ip_tx.data.data_out <= x"c6"; |
ip_tx.data.data_out_last <= '1'; |
wait for clk_period; |
|
assert mac_data_out_last = '1' report "T2: mac_datda_out_last not set on last byte"; |
|
|
ip_tx.data.data_out_valid <= '0'; |
ip_tx.data.data_out_last <= '0'; |
wait for clk_period*2; |
|
assert ip_tx_result = IPTX_RESULT_SENT report "T2: result should be IPTX_RESULT_SENT"; |
assert mac_tx_req = '0' report "T2: mac_tx_req held on too long after TX"; |
|
mac_tx_granted <= '0'; |
wait for clk_period*2; |
|
------------ |
-- TEST 3 -- tx test for IP broadcast, should be no arp req |
------------ |
|
report "T3: tx test for IP broadcast, should be no arp req"; |
|
ip_tx.hdr.protocol <= x"11"; |
ip_tx.hdr.data_length <= x"0006"; |
ip_tx.hdr.dst_ip_addr <= x"ffffffff"; |
ip_tx_start <= '1'; |
wait for clk_period; |
ip_tx_start <= '0'; wait for clk_period; |
arp_req_rslt.got_mac <= '0'; |
|
assert arp_req_req.lookup_req = '0' report "T3: its trying to do an ARP req tx start"; |
assert ip_tx_result = IPTX_RESULT_SENDING report "T3: result should be IPTX_RESULT_SENDING"; |
|
wait for clk_period; -- simulate mac chn access time |
mac_tx_granted <= '1'; |
wait for clk_period*2; |
mac_data_out_ready <= '1'; |
|
assert ip_tx_data_out_ready = '0' report "T3: IP data out ready asserted too early"; |
|
wait until ip_tx_data_out_ready = '1'; |
|
-- start to tx IP data |
ip_tx.data.data_out_valid <= '1'; |
ip_tx.data.data_out <= x"c1"; wait for clk_period; |
ip_tx.data.data_out <= x"c2"; wait for clk_period; |
ip_tx.data.data_out <= x"c3"; wait for clk_period; |
ip_tx.data.data_out <= x"c4"; wait for clk_period; |
ip_tx.data.data_out <= x"c5"; wait for clk_period; |
|
ip_tx.data.data_out <= x"c6"; |
ip_tx.data.data_out_last <= '1'; |
wait for clk_period; |
|
assert mac_data_out_last = '1' report "T3: mac_datda_out_last not set on last byte"; |
|
|
ip_tx.data.data_out_valid <= '0'; |
ip_tx.data.data_out_last <= '0'; |
wait for clk_period*2; |
|
assert ip_tx_result = IPTX_RESULT_SENT report "T3: result should be IPTX_RESULT_SENT"; |
assert mac_tx_req = '0' report "T3: mac_tx_req held on too long after TX"; |
|
mac_tx_granted <= '0'; |
wait for clk_period*2; |
|
|
report "--- end of tests ---"; |
|
wait; |
end process; |
|
END; |
/udp_ip_stack/tags/v1.3/bench/vhdl/UDP_complete_nomac_tb.vhd
0,0 → 1,1546
-------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: |
-- |
-- Create Date: 09:57:01 06/13/2011 |
-- Design Name: |
-- Module Name: C:/Users/pjf/Documents/projects/fpga/xilinx/Network/udp1/UDP_complete_nomac_tb.vhd |
-- Project Name: udp1 |
-- Target Device: |
-- Tool versions: |
-- Description: |
-- |
-- VHDL Test Bench Created by ISE for module: UDP_Complete_nomac |
-- |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Revision 0.02 - Added test for IP broadcast tx |
-- Revision 0.03 - Added tests for ARP timeout |
-- Additional Comments: |
-- |
-- Notes: |
-- This testbench has been automatically generated using types std_logic and |
-- std_logic_vector for the ports of the unit under test. Xilinx recommends |
-- that these types always be used for the top-level I/O of a design in order |
-- to guarantee that the testbench will bind correctly to the post-implementation |
-- simulation model. |
-------------------------------------------------------------------------------- |
library IEEE; |
use IEEE.STD_LOGIC_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.axi.all; |
use work.ipv4_types.all; |
use work.arp_types.all; |
|
ENTITY UDP_complete_nomac_tb IS |
END UDP_complete_nomac_tb; |
|
ARCHITECTURE behavior OF UDP_complete_nomac_tb IS |
|
-- Component Declaration for the Unit Under Test (UUT) |
|
COMPONENT UDP_Complete_nomac |
generic ( |
CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr |
ARP_TIMEOUT : integer := 60 -- ARP response timeout (s) |
); |
Port ( |
-- UDP TX signals |
udp_tx_start : in std_logic; -- indicates req to tx UDP |
udp_txi : in udp_tx_type; -- UDP tx cxns |
udp_tx_result : out std_logic_vector (1 downto 0);-- tx status (changes during transmission) |
udp_tx_data_out_ready: out std_logic; -- indicates udp_tx is ready to take data |
-- UDP RX signals |
udp_rx_start : out std_logic; -- indicates receipt of udp header |
udp_rxo : out udp_rx_type; |
-- IP RX signals |
ip_rx_hdr : out ipv4_rx_header_type; |
-- system signals |
rx_clk : in STD_LOGIC; |
tx_clk : in STD_LOGIC; |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
our_mac_address : in std_logic_vector (47 downto 0); |
control : in udp_control_type; |
-- status signals |
arp_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- count of arp pkts received |
ip_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us |
-- MAC Transmitter |
mac_tx_tdata : out std_logic_vector(7 downto 0); -- data byte to tx |
mac_tx_tvalid : out std_logic; -- tdata is valid |
mac_tx_tready : in std_logic; -- mac is ready to accept data |
mac_tx_tfirst : out std_logic; -- indicates first byte of frame |
mac_tx_tlast : out std_logic; -- indicates last byte of frame |
-- MAC Receiver |
mac_rx_tdata : in std_logic_vector(7 downto 0); -- data byte received |
mac_rx_tvalid : in std_logic; -- indicates tdata is valid |
mac_rx_tready : out std_logic; -- tells mac that we are ready to take data |
mac_rx_tlast : in std_logic -- indicates last byte of the trame |
); |
END COMPONENT; |
|
|
|
type state_type is (IDLE, WAIT_RX_DONE, DATA_OUT); |
type count_mode_type is (RST, INCR, HOLD); |
type set_clr_type is (SET, CLR, HOLD); |
|
|
--Inputs |
signal udp_tx_start_int : std_logic := '0'; |
signal udp_tx_int : udp_tx_type; |
signal clk_int : std_logic := '0'; |
signal reset : std_logic := '0'; |
signal our_ip_address : std_logic_vector(31 downto 0) := (others => '0'); |
signal our_mac_address : std_logic_vector(47 downto 0) := (others => '0'); |
signal mac_tx_tready : std_logic := '0'; |
signal mac_rx_tdata : std_logic_vector(7 downto 0) := (others => '0'); |
signal mac_rx_tvalid : std_logic := '0'; |
signal mac_rx_tlast : std_logic := '0'; |
signal control : udp_control_type; |
|
--Outputs |
signal udp_rx_start_int : std_logic; |
signal udp_rx_int : udp_rx_type; |
signal ip_rx_hdr : ipv4_rx_header_type; |
signal udp_tx_result : std_logic_vector (1 downto 0); |
signal udp_tx_data_out_ready_int: std_logic; |
|
signal arp_pkt_count : std_logic_vector(7 downto 0); |
signal ip_pkt_count : std_logic_vector(7 downto 0); |
signal mac_tx_tdata : std_logic_vector(7 downto 0); |
signal mac_tx_tvalid : std_logic; |
signal mac_tx_tfirst : std_logic; |
signal mac_tx_tlast : std_logic; |
signal mac_rx_tready : std_logic; |
|
signal pbtx_led : std_logic; |
signal pbtx : std_logic := '0'; |
|
-- state signals |
signal state : state_type; |
signal count : unsigned (7 downto 0); |
signal tx_hdr : udp_tx_header_type; |
signal tx_start_reg : std_logic; |
signal tx_started_reg : std_logic; |
signal tx_fin_reg : std_logic; |
|
|
-- control signals |
signal next_state : state_type; |
signal set_state : std_logic; |
signal set_count : count_mode_type; |
signal set_hdr : std_logic; |
signal set_tx_start : set_clr_type; |
signal set_last : std_logic; |
signal set_tx_started : set_clr_type; |
signal set_tx_fin : set_clr_type; |
signal first_byte_rx : STD_LOGIC_VECTOR(7 downto 0); |
|
|
|
-- Clock period definitions |
constant clk_period : time := 8 ns; |
|
BEGIN |
|
-- Instantiate the Unit Under Test (UUT) |
uut: UDP_Complete_nomac |
generic map ( |
CLOCK_FREQ => 10, -- artificially low count to enable pragmatic testing |
ARP_TIMEOUT => 20 |
) |
PORT MAP ( |
udp_tx_start => udp_tx_start_int, |
udp_txi => udp_tx_int, |
udp_tx_result => udp_tx_result, |
udp_tx_data_out_ready => udp_tx_data_out_ready_int, |
udp_rx_start => udp_rx_start_int, |
udp_rxo => udp_rx_int, |
ip_rx_hdr => ip_rx_hdr, |
rx_clk => clk_int, |
tx_clk => clk_int, |
reset => reset, |
our_ip_address => our_ip_address, |
our_mac_address => our_mac_address, |
control => control, |
arp_pkt_count => arp_pkt_count, |
ip_pkt_count => ip_pkt_count, |
mac_tx_tdata => mac_tx_tdata, |
mac_tx_tvalid => mac_tx_tvalid, |
mac_tx_tready => mac_tx_tready, |
mac_tx_tfirst => mac_tx_tfirst, |
mac_tx_tlast => mac_tx_tlast, |
mac_rx_tdata => mac_rx_tdata, |
mac_rx_tvalid => mac_rx_tvalid, |
mac_rx_tready => mac_rx_tready, |
mac_rx_tlast => mac_rx_tlast |
); |
|
-- Clock process definitions |
clk_process :process |
begin |
clk_int <= '0'; |
wait for clk_period/2; |
clk_int <= '1'; |
wait for clk_period/2; |
end process; |
|
|
-- Stimulus process |
stim_proc: process |
begin |
-- hold reset state for 100 ns. |
wait for 100 ns; |
|
our_ip_address <= x"c0a80509"; -- 192.168.5.9 |
our_mac_address <= x"002320212223"; |
control.ip_controls.arp_controls.clear_cache <= '0'; |
mac_tx_tready <= '0'; |
|
reset <= '1'; |
wait for clk_period*10; |
reset <= '0'; |
wait for clk_period*5; |
|
-- check reset conditions |
assert udp_tx_result = UDPTX_RESULT_NONE report "udp_tx_result not initialised correctly on reset"; |
assert udp_tx_data_out_ready_int = '0' report "ip_udp_txitx.data.data_out_ready not initialised correctly on reset"; |
assert mac_tx_tvalid = '0' report "mac_tx_tvalid not initialised correctly on reset"; |
assert mac_tx_tlast = '0' report "mac_tx_tlast not initialised correctly on reset"; |
assert arp_pkt_count = x"00" report "arp_pkt_count not initialised correctly on reset"; |
assert ip_pkt_count = x"00" report "ip_pkt_count not initialised correctly on reset"; |
assert udp_rx_start_int = '0' report "udp_rx_start not initialised correctly on reset"; |
assert udp_rx_int.hdr.is_valid = '0' report "udp_rx_int.hdr.is_valid not initialised correctly on reset"; |
assert udp_rx_int.hdr.data_length = x"0000" report "udp_rx_int.hdr.data_length not initialised correctly on reset"; |
assert udp_rx_int.hdr.src_ip_addr = x"00000000" report "udp_rx_int.hdr.src_ip_addr not initialised correctly on reset"; |
assert udp_rx_int.hdr.src_port = x"0000" report "udp_rx_int.hdr.src_port not initialised correctly on reset"; |
assert udp_rx_int.hdr.dst_port = x"0000" report "udp_rx_int.hdr.dst_port not initialised correctly on reset"; |
assert udp_rx_int.data.data_in = x"00" report "udp_rx_start.data.data_in not initialised correctly on reset"; |
assert udp_rx_int.data.data_in_valid = '0' report "udp_rx_start.data.data_in_valid not initialised correctly on reset"; |
assert udp_rx_int.data.data_in_last = '0' report "udp_rx_start.data.data_in_last not initialised correctly on reset"; |
assert ip_rx_hdr.is_valid = '0' report "ip_rx_hdr.is_valid not initialised correctly on reset"; |
assert ip_rx_hdr.protocol = x"00" report "ip_rx_hdr.protocol not initialised correctly on reset"; |
assert ip_rx_hdr.data_length = x"0000" report "ip_rx_hdr.data_length not initialised correctly on reset"; |
assert ip_rx_hdr.src_ip_addr = x"00000000" report "ip_rx_hdr.src_ip_addr not initialised correctly on reset"; |
assert ip_rx_hdr.num_frame_errors = x"00" report "ip_rx_hdr.num_frame_errors not initialised correctly on reset"; |
|
|
-- insert stimulus here |
|
------------ |
-- TEST 1 -- send ARP request |
------------ |
|
report "T1: Send an ARP request: who has 192.168.5.9? Tell 192.168.5.1"; |
|
mac_tx_tready <= '1'; |
|
mac_rx_tvalid <= '1'; |
-- dst MAC (bc) |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
-- src MAC |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"18"; wait for clk_period; |
mac_rx_tdata <= x"29"; wait for clk_period; |
mac_rx_tdata <= x"26"; wait for clk_period; |
mac_rx_tdata <= x"7c"; wait for clk_period; |
-- type |
mac_rx_tdata <= x"08"; wait for clk_period; |
mac_rx_tdata <= x"06"; wait for clk_period; |
-- HW type |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"01"; wait for clk_period; |
-- Protocol type |
mac_rx_tdata <= x"08"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- HW size |
mac_rx_tdata <= x"06"; wait for clk_period; |
-- protocol size |
mac_rx_tdata <= x"04"; wait for clk_period; |
-- Opcode |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"01"; wait for clk_period; |
-- Sender MAC |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"18"; wait for clk_period; |
mac_rx_tdata <= x"29"; wait for clk_period; |
mac_rx_tdata <= x"26"; wait for clk_period; |
mac_rx_tdata <= x"7c"; wait for clk_period; |
-- Sender IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"01"; wait for clk_period; |
-- Target MAC |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- Target IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"09"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tlast <= '1'; |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tlast <= '0'; |
mac_rx_tvalid <= '0'; |
|
-- check we got the ARP pkt |
assert arp_pkt_count = x"01" report "T1: arp_pkt_count wrong value"; |
assert ip_pkt_count = x"00" report "T1: ip_pkt_count wrong value"; |
assert udp_tx_result = UDPTX_RESULT_NONE report "T1: udp_tx_result wrong value"; |
assert udp_tx_data_out_ready_int = '0' report "T1: ip_udp_txitx.data.data_out_ready wrong value"; |
assert udp_rx_start_int = '0' report "T1: udp_rx_start wrong value"; |
assert udp_rx_int.hdr.is_valid = '0' report "T1: udp_rx_int.hdr.is_valid wrong value"; |
assert ip_rx_hdr.is_valid = '0' report "T1: ip_rx_hdr.is_valid wrong value"; |
|
-- check we tx a response |
|
wait for clk_period*25; |
assert mac_tx_tvalid = '1' report "T1: not transmitting a response"; |
wait for clk_period*25; |
assert mac_tx_tvalid = '0' report "T1: tx held on for too long"; |
|
------------ |
-- TEST 2 -- send UDP pkt (same as sample from Java program) |
------------ |
|
report "T2: Send UDP IP pkt dst ip_address c0a80509, from port f49a to port 2694"; |
|
mac_rx_tvalid <= '1'; |
-- dst MAC (bc) |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"20"; wait for clk_period; |
mac_rx_tdata <= x"21"; wait for clk_period; |
mac_rx_tdata <= x"22"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
-- src MAC |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"18"; wait for clk_period; |
mac_rx_tdata <= x"29"; wait for clk_period; |
mac_rx_tdata <= x"26"; wait for clk_period; |
mac_rx_tdata <= x"7c"; wait for clk_period; |
-- type |
mac_rx_tdata <= x"08"; wait for clk_period; -- IP pkt |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- ver & HL / service type |
mac_rx_tdata <= x"45"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- total len |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"21"; wait for clk_period; |
-- ID |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"7a"; wait for clk_period; |
-- flags & frag |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- TTL |
mac_rx_tdata <= x"80"; wait for clk_period; |
-- Protocol |
mac_rx_tdata <= x"11"; wait for clk_period; |
-- Header CKS |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- SRC IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"01"; wait for clk_period; |
-- DST IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"09"; wait for clk_period; |
-- SRC port |
mac_rx_tdata <= x"f4"; wait for clk_period; |
mac_rx_tdata <= x"9a"; wait for clk_period; |
-- DST port |
mac_rx_tdata <= x"26"; wait for clk_period; |
mac_rx_tdata <= x"94"; wait for clk_period; |
-- length |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"0d"; wait for clk_period; |
-- cks |
mac_rx_tdata <= x"8b"; wait for clk_period; |
mac_rx_tdata <= x"79"; wait for clk_period; |
-- user data |
mac_rx_tdata <= x"68"; wait for clk_period; |
|
-- since we are up to the user data stage, the header should be valid and the data_in_valid should be set |
assert udp_rx_int.hdr.is_valid = '1' report "T2: udp_rx_int.hdr.is_valid not set"; |
assert udp_rx_int.hdr.data_length = x"0005" report "T2: udp_rx_int.hdr.data_length not set correctly"; |
assert udp_rx_int.hdr.src_ip_addr = x"c0a80501" report "T2: udp_rx_int.hdr.src_ip_addr not set correctly"; |
assert udp_rx_int.hdr.src_port = x"f49a" report "T2: udp_rx_int.hdr.src_port not set correctly"; |
assert udp_rx_int.hdr.dst_port = x"2694" report "T2: udp_rx_int.hdr.dst_port not set correctly"; |
|
assert udp_rx_start_int = '1' report "T2: udp_rx_start not set"; |
assert udp_rx_int.data.data_in_valid = '1' report "T2: udp_rx_int.data.data_in_valid not set"; |
|
assert ip_rx_hdr.is_valid = '1' report "T2: ip_rx_hdr.is_valid not set"; |
assert ip_rx_hdr.protocol = x"11" report "T2: ip_rx_hdr.protocol not set correctly"; |
assert ip_rx_hdr.src_ip_addr = x"c0a80501" report "T2: ip_rx.hdr.src_ip_addr not set correctly"; |
assert ip_rx_hdr.num_frame_errors = x"00" report "T2: ip_rx.hdr.num_frame_errors not set correctly"; |
assert ip_rx_hdr.last_error_code = x"0" report "T2: ip_rx.hdr.last_error_code not set correctly"; |
|
-- put the rest of the user data |
mac_rx_tdata <= x"65"; wait for clk_period; |
mac_rx_tdata <= x"6c"; wait for clk_period; |
mac_rx_tdata <= x"6c"; wait for clk_period; |
mac_rx_tdata <= x"6f"; mac_rx_tlast <= '1'; wait for clk_period; |
|
assert udp_rx_int.data.data_in_last = '1' report "T2: udp_rx_int.data.data_in_last not set"; |
|
mac_rx_tdata <= x"00"; |
mac_rx_tlast <= '0'; |
mac_rx_tvalid <= '0'; |
wait for clk_period; |
|
assert udp_rx_int.data.data_in_valid = '0' report "T2: udp_rx_int.data.data_in_valid not cleared"; |
assert udp_rx_int.data.data_in_last = '0' report "T2: udp_rx_int.data.data_in_last not cleared"; |
assert udp_rx_start_int = '0' report "T2: udp_rx_start not cleared"; |
assert ip_rx_hdr.num_frame_errors = x"00" report "T2: ip_rx_hdr.num_frame_errors non zero at end of test"; |
assert ip_rx_hdr.last_error_code = x"0" report "T2: ip_rx_hdr.last_error_code indicates error at end of test"; |
assert ip_pkt_count = x"01" report "T2: ip pkt cnt incorrect"; |
|
wait for clk_period*20; |
|
------------ |
-- TEST 3 -- send UDP pkt again (same as sample from Java program) |
------------ |
|
report "T3: Send UDP IP pkt dst ip_address c0a80509, from port f49a to port 2694"; |
|
mac_rx_tvalid <= '1'; |
-- dst MAC (bc) |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"20"; wait for clk_period; |
mac_rx_tdata <= x"21"; wait for clk_period; |
mac_rx_tdata <= x"22"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
-- src MAC |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"18"; wait for clk_period; |
mac_rx_tdata <= x"29"; wait for clk_period; |
mac_rx_tdata <= x"26"; wait for clk_period; |
mac_rx_tdata <= x"7c"; wait for clk_period; |
-- type |
mac_rx_tdata <= x"08"; wait for clk_period; -- IP pkt |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- ver & HL / service type |
mac_rx_tdata <= x"45"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- total len |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"21"; wait for clk_period; |
-- ID |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"7a"; wait for clk_period; |
-- flags & frag |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- TTL |
mac_rx_tdata <= x"80"; wait for clk_period; |
-- Protocol |
mac_rx_tdata <= x"11"; wait for clk_period; |
-- Header CKS |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- SRC IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"01"; wait for clk_period; |
-- DST IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"09"; wait for clk_period; |
-- SRC port |
mac_rx_tdata <= x"f4"; wait for clk_period; |
mac_rx_tdata <= x"9a"; wait for clk_period; |
-- DST port |
mac_rx_tdata <= x"26"; wait for clk_period; |
mac_rx_tdata <= x"94"; wait for clk_period; |
-- length |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"0d"; wait for clk_period; |
-- cks |
mac_rx_tdata <= x"8b"; wait for clk_period; |
mac_rx_tdata <= x"79"; wait for clk_period; |
-- user data |
mac_rx_tdata <= x"68"; wait for clk_period; |
|
-- since we are up to the user data stage, the header should be valid and the data_in_valid should be set |
assert udp_rx_int.hdr.is_valid = '1' report "T3: udp_rx_int.hdr.is_valid not set"; |
assert udp_rx_int.hdr.data_length = x"0005" report "T3: udp_rx_int.hdr.data_length not set correctly"; |
assert udp_rx_int.hdr.src_ip_addr = x"c0a80501" report "T3: udp_rx_int.hdr.src_ip_addr not set correctly"; |
assert udp_rx_int.hdr.src_port = x"f49a" report "T3: udp_rx_int.hdr.src_port not set correctly"; |
assert udp_rx_int.hdr.dst_port = x"2694" report "T3: udp_rx_int.hdr.dst_port not set correctly"; |
|
assert udp_rx_start_int = '1' report "T3: udp_rx_start not set"; |
assert udp_rx_int.data.data_in_valid = '1' report "T3: udp_rx_int.data.data_in_valid not set"; |
|
assert ip_rx_hdr.is_valid = '1' report "T3: ip_rx_hdr.is_valid not set"; |
assert ip_rx_hdr.protocol = x"11" report "T3: ip_rx_hdr.protocol not set correctly"; |
assert ip_rx_hdr.src_ip_addr = x"c0a80501" report "T3: ip_rx.hdr.src_ip_addr not set correctly"; |
assert ip_rx_hdr.num_frame_errors = x"00" report "T3: ip_rx.hdr.num_frame_errors not set correctly"; |
assert ip_rx_hdr.last_error_code = x"0" report "T3: ip_rx.hdr.last_error_code not set correctly"; |
|
-- put the rest of the user data |
mac_rx_tdata <= x"65"; wait for clk_period; |
mac_rx_tdata <= x"6c"; wait for clk_period; |
mac_rx_tdata <= x"6c"; wait for clk_period; |
mac_rx_tdata <= x"6f"; mac_rx_tlast <= '1'; wait for clk_period; |
|
assert udp_rx_int.data.data_in_last = '1' report "T3: udp_rx_int.data.data_in_last not set"; |
|
mac_rx_tdata <= x"00"; |
mac_rx_tlast <= '0'; |
mac_rx_tvalid <= '0'; |
wait for clk_period; |
|
assert udp_rx_int.data.data_in_valid = '0' report "T3: udp_rx_int.data.data_in_valid not cleared"; |
assert udp_rx_int.data.data_in_last = '0' report "T3: udp_rx_int.data.data_in_last not cleared"; |
assert udp_rx_start_int = '0' report "T3: udp_rx_start not cleared"; |
assert ip_rx_hdr.num_frame_errors = x"00" report "T3: ip_rx_hdr.num_frame_errors non zero at end of test"; |
assert ip_rx_hdr.last_error_code = x"0" report "T3: ip_rx_hdr.last_error_code indicates error at end of test"; |
assert ip_pkt_count = x"02" report "T3: ip pkt cnt incorrect"; |
|
wait for clk_period*50; |
|
------------ |
-- TEST 4 -- send UDP pkt with specific UDP data to force a broadcast tx in reply |
------------ |
|
report "T4: Send UDP IP pkt dst ip_address c0a80509, from port f49a to port 2694"; |
|
mac_rx_tvalid <= '1'; |
-- dst MAC (bc) |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"20"; wait for clk_period; |
mac_rx_tdata <= x"21"; wait for clk_period; |
mac_rx_tdata <= x"22"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
-- src MAC |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"18"; wait for clk_period; |
mac_rx_tdata <= x"29"; wait for clk_period; |
mac_rx_tdata <= x"26"; wait for clk_period; |
mac_rx_tdata <= x"7c"; wait for clk_period; |
-- type |
mac_rx_tdata <= x"08"; wait for clk_period; -- IP pkt |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- ver & HL / service type |
mac_rx_tdata <= x"45"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- total len |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"21"; wait for clk_period; |
-- ID |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"7a"; wait for clk_period; |
-- flags & frag |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- TTL |
mac_rx_tdata <= x"80"; wait for clk_period; |
-- Protocol |
mac_rx_tdata <= x"11"; wait for clk_period; |
-- Header CKS |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- SRC IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"01"; wait for clk_period; |
-- DST IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"09"; wait for clk_period; |
-- SRC port |
mac_rx_tdata <= x"f4"; wait for clk_period; |
mac_rx_tdata <= x"9a"; wait for clk_period; |
-- DST port |
mac_rx_tdata <= x"26"; wait for clk_period; |
mac_rx_tdata <= x"94"; wait for clk_period; |
-- length |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"0d"; wait for clk_period; |
-- cks |
mac_rx_tdata <= x"8b"; wait for clk_period; |
mac_rx_tdata <= x"79"; wait for clk_period; |
-- user data |
mac_rx_tdata <= x"42"; wait for clk_period; -- First byte 'B' triggers a reply to broadcast addr |
|
-- since we are up to the user data stage, the header should be valid and the data_in_valid should be set |
assert udp_rx_int.hdr.is_valid = '1' report "T4: udp_rx_int.hdr.is_valid not set"; |
assert udp_rx_int.hdr.data_length = x"0005" report "T4: udp_rx_int.hdr.data_length not set correctly"; |
assert udp_rx_int.hdr.src_ip_addr = x"c0a80501" report "T4: udp_rx_int.hdr.src_ip_addr not set correctly"; |
assert udp_rx_int.hdr.src_port = x"f49a" report "T4: udp_rx_int.hdr.src_port not set correctly"; |
assert udp_rx_int.hdr.dst_port = x"2694" report "T4: udp_rx_int.hdr.dst_port not set correctly"; |
|
assert udp_rx_start_int = '1' report "T4: udp_rx_start not set"; |
assert udp_rx_int.data.data_in_valid = '1' report "T4: udp_rx_int.data.data_in_valid not set"; |
|
assert ip_rx_hdr.is_valid = '1' report "T4: ip_rx_hdr.is_valid not set"; |
assert ip_rx_hdr.protocol = x"11" report "T4: ip_rx_hdr.protocol not set correctly"; |
assert ip_rx_hdr.src_ip_addr = x"c0a80501" report "T4: ip_rx.hdr.src_ip_addr not set correctly"; |
assert ip_rx_hdr.num_frame_errors = x"00" report "T4: ip_rx.hdr.num_frame_errors not set correctly"; |
assert ip_rx_hdr.last_error_code = x"0" report "T4: ip_rx.hdr.last_error_code not set correctly"; |
|
-- put the rest of the user data |
mac_rx_tdata <= x"65"; wait for clk_period; |
mac_rx_tdata <= x"6c"; wait for clk_period; |
mac_rx_tdata <= x"6c"; wait for clk_period; |
mac_rx_tdata <= x"6f"; mac_rx_tlast <= '1'; wait for clk_period; |
|
assert udp_rx_int.data.data_in_last = '1' report "T4: udp_rx_int.data.data_in_last not set"; |
|
mac_rx_tdata <= x"00"; |
mac_rx_tlast <= '0'; |
mac_rx_tvalid <= '0'; |
wait for clk_period; |
|
report "T4: waiting for mac data tx"; |
wait until mac_tx_tvalid = '1'; |
report "T4: starting mac data tx"; |
wait for clk_period; |
|
-- check the mac data being transmitted |
assert mac_tx_tdata = x"ff" report "T4: incorrect dst mac 0"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T4: incorrect dst mac 1"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T4: incorrect dst mac 2"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T4: incorrect dst mac 3"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T4: incorrect dst mac 4"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T4: incorrect dst mac 5"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T4: incorrect src mac 0"; wait for clk_period; |
assert mac_tx_tdata = x"23" report "T4: incorrect src mac 1"; wait for clk_period; |
assert mac_tx_tdata = x"20" report "T4: incorrect src mac 2"; wait for clk_period; |
assert mac_tx_tdata = x"21" report "T4: incorrect src mac 3"; wait for clk_period; |
assert mac_tx_tdata = x"22" report "T4: incorrect src mac 4"; wait for clk_period; |
assert mac_tx_tdata = x"23" report "T4: incorrect src mac 5"; wait for clk_period; |
|
assert mac_tx_tdata = x"08" report "T4: incorrect pkt_type 0"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T4: incorrect pkt type 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"45" report "T4: incorrect ver.hlen"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T4: incorrect srv type"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T4: incorrect len 0"; wait for clk_period; |
assert mac_tx_tdata = x"20" report "T4: incorrect len 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T4: incorrect ident 0"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T4: incorrect ident 1"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T4: incorrect flag&frag 0"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T4: incorrect flag&frag 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"80" report "T4: incorrect TTL"; wait for clk_period; |
assert mac_tx_tdata = x"11" report "T4: incorrect protocol"; wait for clk_period; |
assert mac_tx_tdata = x"75" report "T4: incorrect hdr.cks 0"; wait for clk_period; |
assert mac_tx_tdata = x"1c" report "T4: incorrect hdr.cks 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"c0" report "T4: incorrect src ip 0"; wait for clk_period; |
assert mac_tx_tdata = x"a8" report "T4: incorrect src ip 1"; wait for clk_period; |
assert mac_tx_tdata = x"05" report "T4: incorrect src ip 2"; wait for clk_period; |
assert mac_tx_tdata = x"09" report "T4: incorrect src ip 3"; wait for clk_period; |
|
assert mac_tx_tdata = x"ff" report "T4: incorrect dst ip 0"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T4: incorrect dst ip 1"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T4: incorrect dst ip 2"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T4: incorrect dst ip 3"; wait for clk_period; |
|
assert mac_tx_tdata = x"26" report "T4: incorrect src port 0"; wait for clk_period; |
assert mac_tx_tdata = x"94" report "T4: incorrect src port 1"; wait for clk_period; |
assert mac_tx_tdata = x"f4" report "T4: incorrect dst port 0"; wait for clk_period; |
assert mac_tx_tdata = x"9a" report "T4: incorrect dst port 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T4: incorrect udp len 0"; wait for clk_period; |
assert mac_tx_tdata = x"0c" report "T4: incorrect udp len 1"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T4: incorrect udp cks 0"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T4: incorrect udp cks 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"40" report "T4: incorrect udp data 0"; wait for clk_period; |
assert mac_tx_tdata = x"41" report "T4: incorrect udp data 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"42" report "T4: incorrect udp data 2"; |
assert mac_tx_tlast = '0' report "T4: tlast asserted too soon"; wait for clk_period; |
assert mac_tx_tdata = x"43" report "T4: incorrect udp data 3"; |
assert mac_tx_tlast = '1' report "T4: tlast not asserted"; wait for clk_period; |
|
assert udp_tx_result = IPTX_RESULT_SENT report "T4: TX did not complete"; |
|
assert udp_rx_int.data.data_in_valid = '0' report "T4: udp_rx_int.data.data_in_valid not cleared"; |
assert udp_rx_int.data.data_in_last = '0' report "T4: udp_rx_int.data.data_in_last not cleared"; |
assert udp_rx_start_int = '0' report "T4: udp_rx_start not cleared"; |
assert ip_rx_hdr.num_frame_errors = x"00" report "T4: ip_rx_hdr.num_frame_errors non zero at end of test"; |
assert ip_rx_hdr.last_error_code = x"0" report "T4: ip_rx_hdr.last_error_code indicates error at end of test"; |
assert ip_pkt_count = x"03" report "T4: ip pkt cnt incorrect"; |
|
------------ |
-- TEST 5 -- send UDP pkt with dst=bc addr to ensure we can receive broadcast tx |
------------ |
|
report "T5: Send UDP IP pkt dst ip_address bc, from port f49a to port 2694"; |
|
mac_rx_tvalid <= '1'; |
-- dst MAC (bc) |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
-- src MAC |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"18"; wait for clk_period; |
mac_rx_tdata <= x"29"; wait for clk_period; |
mac_rx_tdata <= x"26"; wait for clk_period; |
mac_rx_tdata <= x"7c"; wait for clk_period; |
-- type |
mac_rx_tdata <= x"08"; wait for clk_period; -- IP pkt |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- ver & HL / service type |
mac_rx_tdata <= x"45"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- total len |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"21"; wait for clk_period; |
-- ID |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"7a"; wait for clk_period; |
-- flags & frag |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- TTL |
mac_rx_tdata <= x"80"; wait for clk_period; |
-- Protocol |
mac_rx_tdata <= x"11"; wait for clk_period; |
-- Header CKS |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- SRC IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"01"; wait for clk_period; |
-- DST IP |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
-- SRC port |
mac_rx_tdata <= x"f4"; wait for clk_period; |
mac_rx_tdata <= x"9a"; wait for clk_period; |
-- DST port |
mac_rx_tdata <= x"26"; wait for clk_period; |
mac_rx_tdata <= x"94"; wait for clk_period; |
-- length |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"0d"; wait for clk_period; |
-- cks |
mac_rx_tdata <= x"8b"; wait for clk_period; |
mac_rx_tdata <= x"79"; wait for clk_period; |
-- user data |
mac_rx_tdata <= x"68"; wait for clk_period; |
|
-- since we are up to the user data stage, the header should be valid and the data_in_valid should be set |
assert udp_rx_int.hdr.is_valid = '1' report "T5: udp_rx_int.hdr.is_valid not set"; |
assert udp_rx_int.hdr.data_length = x"0005" report "T5: udp_rx_int.hdr.data_length not set correctly"; |
assert udp_rx_int.hdr.src_ip_addr = x"c0a80501" report "T5: udp_rx_int.hdr.src_ip_addr not set correctly"; |
assert udp_rx_int.hdr.src_port = x"f49a" report "T5: udp_rx_int.hdr.src_port not set correctly"; |
assert udp_rx_int.hdr.dst_port = x"2694" report "T5: udp_rx_int.hdr.dst_port not set correctly"; |
|
assert udp_rx_start_int = '1' report "T5: udp_rx_start not set"; |
assert udp_rx_int.data.data_in_valid = '1' report "T5: udp_rx_int.data.data_in_valid not set"; |
|
assert ip_rx_hdr.is_valid = '1' report "T5: ip_rx_hdr.is_valid not set"; |
assert ip_rx_hdr.protocol = x"11" report "T5: ip_rx_hdr.protocol not set correctly"; |
assert ip_rx_hdr.src_ip_addr = x"c0a80501" report "T5: ip_rx.hdr.src_ip_addr not set correctly"; |
assert ip_rx_hdr.num_frame_errors = x"00" report "T5: ip_rx.hdr.num_frame_errors not set correctly"; |
assert ip_rx_hdr.last_error_code = x"0" report "T5: ip_rx.hdr.last_error_code not set correctly"; |
|
-- put the rest of the user data |
mac_rx_tdata <= x"65"; wait for clk_period; |
mac_rx_tdata <= x"6c"; wait for clk_period; |
mac_rx_tdata <= x"6c"; wait for clk_period; |
mac_rx_tdata <= x"6f"; mac_rx_tlast <= '1'; wait for clk_period; |
|
assert udp_rx_int.data.data_in_last = '1' report "T5: udp_rx_int.data.data_in_last not set"; |
|
mac_rx_tdata <= x"00"; |
mac_rx_tlast <= '0'; |
mac_rx_tvalid <= '0'; |
|
report "T5: waiting for mac data tx"; |
if mac_tx_tvalid = '0' then |
wait until mac_tx_tvalid = '1'; |
wait for clk_period; |
end if; |
report "T5: starting mac data tx"; |
|
-- check the mac data being transmitted |
assert mac_tx_tdata = x"00" report "T5: incorrect dst mac 0"; wait for clk_period; |
assert mac_tx_tdata = x"23" report "T5: incorrect dst mac 1"; wait for clk_period; |
assert mac_tx_tdata = x"18" report "T5: incorrect dst mac 2"; wait for clk_period; |
assert mac_tx_tdata = x"29" report "T5: incorrect dst mac 3"; wait for clk_period; |
assert mac_tx_tdata = x"26" report "T5: incorrect dst mac 4"; wait for clk_period; |
assert mac_tx_tdata = x"7c" report "T5: incorrect dst mac 5"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T5: incorrect src mac 0"; wait for clk_period; |
assert mac_tx_tdata = x"23" report "T5: incorrect src mac 1"; wait for clk_period; |
assert mac_tx_tdata = x"20" report "T5: incorrect src mac 2"; wait for clk_period; |
assert mac_tx_tdata = x"21" report "T5: incorrect src mac 3"; wait for clk_period; |
assert mac_tx_tdata = x"22" report "T5: incorrect src mac 4"; wait for clk_period; |
assert mac_tx_tdata = x"23" report "T5: incorrect src mac 5"; wait for clk_period; |
|
assert mac_tx_tdata = x"08" report "T5: incorrect pkt_type 0"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T5: incorrect pkt type 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"45" report "T5: incorrect ver.hlen"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T5: incorrect srv type"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T5: incorrect len 0"; wait for clk_period; |
assert mac_tx_tdata = x"20" report "T5: incorrect len 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T5: incorrect ident 0"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T5: incorrect ident 1"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T5: incorrect flag&frag 0"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T5: incorrect flag&frag 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"80" report "T5: incorrect TTL"; wait for clk_period; |
assert mac_tx_tdata = x"11" report "T5: incorrect protocol"; wait for clk_period; |
assert mac_tx_tdata = x"af" report "T5: incorrect hdr.cks 0"; wait for clk_period; |
assert mac_tx_tdata = x"72" report "T5: incorrect hdr.cks 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"c0" report "T5: incorrect src ip 0"; wait for clk_period; |
assert mac_tx_tdata = x"a8" report "T5: incorrect src ip 1"; wait for clk_period; |
assert mac_tx_tdata = x"05" report "T5: incorrect src ip 2"; wait for clk_period; |
assert mac_tx_tdata = x"09" report "T5: incorrect src ip 3"; wait for clk_period; |
|
assert mac_tx_tdata = x"c0" report "T5: incorrect dst ip 0"; wait for clk_period; |
assert mac_tx_tdata = x"a8" report "T5: incorrect dst ip 1"; wait for clk_period; |
assert mac_tx_tdata = x"05" report "T5: incorrect dst ip 2"; wait for clk_period; |
assert mac_tx_tdata = x"01" report "T5: incorrect dst ip 3"; wait for clk_period; |
|
assert mac_tx_tdata = x"26" report "T5: incorrect src port 0"; wait for clk_period; |
assert mac_tx_tdata = x"94" report "T5: incorrect src port 1"; wait for clk_period; |
assert mac_tx_tdata = x"f4" report "T5: incorrect dst port 0"; wait for clk_period; |
assert mac_tx_tdata = x"9a" report "T5: incorrect dst port 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T5: incorrect udp len 0"; wait for clk_period; |
assert mac_tx_tdata = x"0c" report "T5: incorrect udp len 1"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T5: incorrect udp cks 0"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T5: incorrect udp cks 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"50" report "T5: incorrect udp data 0"; wait for clk_period; |
assert mac_tx_tdata = x"51" report "T5: incorrect udp data 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"52" report "T5: incorrect udp data 2"; |
assert mac_tx_tlast = '0' report "T5: tlast asserted too soon"; wait for clk_period; |
assert mac_tx_tdata = x"53" report "T5: incorrect udp data 3"; |
assert mac_tx_tlast = '1' report "T5: tlast not asserted"; wait for clk_period; |
|
assert udp_tx_result = IPTX_RESULT_SENT report "T5: TX did not complete"; |
|
assert udp_rx_int.data.data_in_valid = '0' report "T5: udp_rx_int.data.data_in_valid not cleared"; |
assert udp_rx_int.data.data_in_last = '0' report "T5: udp_rx_int.data.data_in_last not cleared"; |
assert udp_rx_start_int = '0' report "T5: udp_rx_start not cleared"; |
assert ip_rx_hdr.num_frame_errors = x"00" report "T5: ip_rx_hdr.num_frame_errors non zero at end of test"; |
assert ip_rx_hdr.last_error_code = x"0" report "T5: ip_rx_hdr.last_error_code indicates error at end of test"; |
assert ip_pkt_count = x"04" report "T5: ip pkt cnt incorrect"; |
|
|
------------ |
-- TEST 6 -- send UDP pkt with data to trigger the sending of a pkt to unknown IP addr to force an ARP timeout |
------------ |
|
report "T6: Send UDP IP pkt dst ip_address c0a80509, from port f49a to port 2694 with data x43 to trig tx to unknown IP"; |
|
mac_rx_tvalid <= '1'; |
-- dst MAC (bc) |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"20"; wait for clk_period; |
mac_rx_tdata <= x"21"; wait for clk_period; |
mac_rx_tdata <= x"22"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
-- src MAC |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"18"; wait for clk_period; |
mac_rx_tdata <= x"29"; wait for clk_period; |
mac_rx_tdata <= x"26"; wait for clk_period; |
mac_rx_tdata <= x"7c"; wait for clk_period; |
-- type |
mac_rx_tdata <= x"08"; wait for clk_period; -- IP pkt |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- ver & HL / service type |
mac_rx_tdata <= x"45"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- total len |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"21"; wait for clk_period; |
-- ID |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"7a"; wait for clk_period; |
-- flags & frag |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- TTL |
mac_rx_tdata <= x"80"; wait for clk_period; |
-- Protocol |
mac_rx_tdata <= x"11"; wait for clk_period; |
-- Header CKS |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- SRC IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"01"; wait for clk_period; |
-- DST IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"09"; wait for clk_period; |
-- SRC port |
mac_rx_tdata <= x"f4"; wait for clk_period; |
mac_rx_tdata <= x"9a"; wait for clk_period; |
-- DST port |
mac_rx_tdata <= x"26"; wait for clk_period; |
mac_rx_tdata <= x"94"; wait for clk_period; |
-- length |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"0d"; wait for clk_period; |
-- cks |
mac_rx_tdata <= x"8b"; wait for clk_period; |
mac_rx_tdata <= x"79"; wait for clk_period; |
-- user data |
mac_rx_tdata <= x"43"; wait for clk_period; -- First byte 'C' triggers a reply to unknown addr |
|
-- since we are up to the user data stage, the header should be valid and the data_in_valid should be set |
assert udp_rx_int.hdr.is_valid = '1' report "T6: udp_rx_int.hdr.is_valid not set"; |
assert udp_rx_int.hdr.data_length = x"0005" report "T6: udp_rx_int.hdr.data_length not set correctly"; |
assert udp_rx_int.hdr.src_ip_addr = x"c0a80501" report "T6: udp_rx_int.hdr.src_ip_addr not set correctly"; |
assert udp_rx_int.hdr.src_port = x"f49a" report "T6: udp_rx_int.hdr.src_port not set correctly"; |
assert udp_rx_int.hdr.dst_port = x"2694" report "T6: udp_rx_int.hdr.dst_port not set correctly"; |
|
assert udp_rx_start_int = '1' report "T6: udp_rx_start not set"; |
assert udp_rx_int.data.data_in_valid = '1' report "T6: udp_rx_int.data.data_in_valid not set"; |
|
assert ip_rx_hdr.is_valid = '1' report "T6: ip_rx_hdr.is_valid not set"; |
assert ip_rx_hdr.protocol = x"11" report "T6: ip_rx_hdr.protocol not set correctly"; |
assert ip_rx_hdr.src_ip_addr = x"c0a80501" report "T6: ip_rx.hdr.src_ip_addr not set correctly"; |
assert ip_rx_hdr.num_frame_errors = x"00" report "T6: ip_rx.hdr.num_frame_errors not set correctly"; |
assert ip_rx_hdr.last_error_code = x"0" report "T6: ip_rx.hdr.last_error_code not set correctly"; |
|
-- put the rest of the user data |
mac_rx_tdata <= x"65"; wait for clk_period; |
mac_rx_tdata <= x"6c"; wait for clk_period; |
mac_rx_tdata <= x"6c"; wait for clk_period; |
mac_rx_tdata <= x"6f"; mac_rx_tlast <= '1'; wait for clk_period; |
|
assert udp_rx_int.data.data_in_last = '1' report "T6: udp_rx_int.data.data_in_last not set"; |
|
mac_rx_tdata <= x"00"; |
mac_rx_tlast <= '0'; |
mac_rx_tvalid <= '0'; |
wait for clk_period; |
|
report "T6: waiting for mac data tx"; |
wait until mac_tx_tvalid = '1'; |
report "T6: starting mac data tx"; |
wait for clk_period; |
|
-- check the mac data being transmitted is valid ARP request |
assert mac_tx_tdata = x"ff" report "T6: incorrect dst mac 0"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T6: incorrect dst mac 1"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T6: incorrect dst mac 2"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T6: incorrect dst mac 3"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T6: incorrect dst mac 4"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T6: incorrect dst mac 5"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T6: incorrect src mac 0"; wait for clk_period; |
assert mac_tx_tdata = x"23" report "T6: incorrect src mac 1"; wait for clk_period; |
assert mac_tx_tdata = x"20" report "T6: incorrect src mac 2"; wait for clk_period; |
assert mac_tx_tdata = x"21" report "T6: incorrect src mac 3"; wait for clk_period; |
assert mac_tx_tdata = x"22" report "T6: incorrect src mac 4"; wait for clk_period; |
assert mac_tx_tdata = x"23" report "T6: incorrect src mac 5"; wait for clk_period; |
|
assert mac_tx_tdata = x"08" report "T6: incorrect pkt_type 0"; wait for clk_period; |
assert mac_tx_tdata = x"06" report "T6: incorrect pkt type 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T6: incorrect HW type.0"; wait for clk_period; |
assert mac_tx_tdata = x"01" report "T6: incorrect HW type.1"; wait for clk_period; |
assert mac_tx_tdata = x"08" report "T6: incorrect prot.0"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T6: incorrect prot.1"; wait for clk_period; |
assert mac_tx_tdata = x"06" report "T6: incorrect HW size"; wait for clk_period; |
assert mac_tx_tdata = x"04" report "T6: incorrect prot size"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T6: incorrect opcode.0"; wait for clk_period; |
assert mac_tx_tdata = x"01" report "T6: incorrect opcode.1"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T6: incorrect sndr mac 0"; wait for clk_period; |
assert mac_tx_tdata = x"23" report "T6: incorrect sndr mac 1"; wait for clk_period; |
assert mac_tx_tdata = x"20" report "T6: incorrect sndr mac 2"; wait for clk_period; |
assert mac_tx_tdata = x"21" report "T6: incorrect sndr mac 3"; wait for clk_period; |
assert mac_tx_tdata = x"22" report "T6: incorrect sndr mac 4"; wait for clk_period; |
assert mac_tx_tdata = x"23" report "T6: incorrect sndr mac 5"; wait for clk_period; |
|
assert mac_tx_tdata = x"c0" report "T6: incorrect sndr ip 0"; wait for clk_period; |
assert mac_tx_tdata = x"a8" report "T6: incorrect sndr ip 1"; wait for clk_period; |
assert mac_tx_tdata = x"05" report "T6: incorrect sndr ip 2"; wait for clk_period; |
assert mac_tx_tdata = x"09" report "T6: incorrect sndr ip 3"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T6: incorrect trg mac 0"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T6: incorrect trg mac 1"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T6: incorrect trg mac 2"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T6: incorrect trg mac 3"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T6: incorrect trg mac 4"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T6: incorrect trg mac 5"; wait for clk_period; |
|
assert mac_tx_tdata = x"c0" report "T6: incorrect trg ip 0"; wait for clk_period; |
assert mac_tx_tdata = x"bb" report "T6: incorrect trg ip 1"; wait for clk_period; |
assert mac_tx_tdata = x"cc" report "T6: incorrect trg ip 2"; |
assert mac_tx_tlast = '0' report "T6: tlast asserted too soon"; |
wait for clk_period; |
|
assert mac_tx_tdata = x"dd" report "T6: incorrect trg ip 3"; |
assert mac_tx_tlast = '1' report "T6: tlast should be set"; |
wait for clk_period; |
|
assert udp_tx_result = IPTX_RESULT_SENDING report "T6: TX should still be in sending phase"; |
|
assert udp_rx_int.data.data_in_valid = '0' report "T6: udp_rx_int.data.data_in_valid not cleared"; |
assert udp_rx_int.data.data_in_last = '0' report "T6: udp_rx_int.data.data_in_last not cleared"; |
assert udp_rx_start_int = '0' report "T6: udp_rx_start not cleared"; |
assert ip_rx_hdr.num_frame_errors = x"00" report "T6: ip_rx_hdr.num_frame_errors non zero at end of test"; |
assert ip_rx_hdr.last_error_code = x"0" report "T6: ip_rx_hdr.last_error_code indicates error at end of test"; |
assert ip_pkt_count = x"05" report "T6: ip pkt cnt incorrect"; |
|
-- check for error on tx as a result of ARP timeout |
|
wait for clk_period*10*20; |
assert udp_tx_result = IPTX_RESULT_ERR report "T6: TX should resulkt in error (arp timeout)"; |
|
wait for clk_period*10; |
|
------------ |
-- TEST 7 -- send UDP pkt again to ensure that we can rx a pkt and tx after a timeout |
------------ |
|
report "T7: Send UDP IP pkt dst ip_address c0a80509, from port f49a to port 2694"; |
|
mac_rx_tvalid <= '1'; |
-- dst MAC (bc) |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"20"; wait for clk_period; |
mac_rx_tdata <= x"21"; wait for clk_period; |
mac_rx_tdata <= x"22"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
-- src MAC |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"18"; wait for clk_period; |
mac_rx_tdata <= x"29"; wait for clk_period; |
mac_rx_tdata <= x"26"; wait for clk_period; |
mac_rx_tdata <= x"7c"; wait for clk_period; |
-- type |
mac_rx_tdata <= x"08"; wait for clk_period; -- IP pkt |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- ver & HL / service type |
mac_rx_tdata <= x"45"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- total len |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"21"; wait for clk_period; |
-- ID |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"7a"; wait for clk_period; |
-- flags & frag |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- TTL |
mac_rx_tdata <= x"80"; wait for clk_period; |
-- Protocol |
mac_rx_tdata <= x"11"; wait for clk_period; |
-- Header CKS |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- SRC IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"01"; wait for clk_period; |
-- DST IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"09"; wait for clk_period; |
-- SRC port |
mac_rx_tdata <= x"f4"; wait for clk_period; |
mac_rx_tdata <= x"9a"; wait for clk_period; |
-- DST port |
mac_rx_tdata <= x"26"; wait for clk_period; |
mac_rx_tdata <= x"94"; wait for clk_period; |
-- length |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"0d"; wait for clk_period; |
-- cks |
mac_rx_tdata <= x"8b"; wait for clk_period; |
mac_rx_tdata <= x"79"; wait for clk_period; |
-- user data |
mac_rx_tdata <= x"68"; wait for clk_period; |
|
-- since we are up to the user data stage, the header should be valid and the data_in_valid should be set |
assert udp_rx_int.hdr.is_valid = '1' report "T7: udp_rx_int.hdr.is_valid not set"; |
assert udp_rx_int.hdr.data_length = x"0005" report "T7: udp_rx_int.hdr.data_length not set correctly"; |
assert udp_rx_int.hdr.src_ip_addr = x"c0a80501" report "T7: udp_rx_int.hdr.src_ip_addr not set correctly"; |
assert udp_rx_int.hdr.src_port = x"f49a" report "T7: udp_rx_int.hdr.src_port not set correctly"; |
assert udp_rx_int.hdr.dst_port = x"2694" report "T7: udp_rx_int.hdr.dst_port not set correctly"; |
|
assert udp_rx_start_int = '1' report "T7: udp_rx_start not set"; |
assert udp_rx_int.data.data_in_valid = '1' report "T7: udp_rx_int.data.data_in_valid not set"; |
|
assert ip_rx_hdr.is_valid = '1' report "T7: ip_rx_hdr.is_valid not set"; |
assert ip_rx_hdr.protocol = x"11" report "T7: ip_rx_hdr.protocol not set correctly"; |
assert ip_rx_hdr.src_ip_addr = x"c0a80501" report "T7: ip_rx.hdr.src_ip_addr not set correctly"; |
assert ip_rx_hdr.num_frame_errors = x"00" report "T7: ip_rx.hdr.num_frame_errors not set correctly"; |
assert ip_rx_hdr.last_error_code = x"0" report "T7: ip_rx.hdr.last_error_code not set correctly"; |
|
-- put the rest of the user data |
mac_rx_tdata <= x"65"; wait for clk_period; |
mac_rx_tdata <= x"6c"; wait for clk_period; |
mac_rx_tdata <= x"6c"; wait for clk_period; |
mac_rx_tdata <= x"6f"; mac_rx_tlast <= '1'; wait for clk_period; |
|
assert udp_rx_int.data.data_in_last = '1' report "T7: udp_rx_int.data.data_in_last not set"; |
|
mac_rx_tdata <= x"00"; |
mac_rx_tlast <= '0'; |
mac_rx_tvalid <= '0'; |
wait for clk_period; |
|
report "T7: waiting for mac ARP REQ data tx"; |
if mac_tx_tvalid = '0' then |
wait until mac_tx_tvalid = '1'; |
wait for clk_period; |
end if; |
report "T7: starting mac ARP REQ data tx"; |
|
-- check the ARP REQ mac data being transmitted |
assert mac_tx_tdata = x"ff" report "T7: arp incorrect dst mac 0"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T7: arp incorrect dst mac 1"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T7: arp incorrect dst mac 2"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T7: arp incorrect dst mac 3"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T7: arp incorrect dst mac 4"; wait for clk_period; |
assert mac_tx_tdata = x"ff" report "T7: arp incorrect dst mac 5"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T7: arp incorrect src mac 0"; wait for clk_period; |
assert mac_tx_tdata = x"23" report "T7: arp incorrect src mac 1"; wait for clk_period; |
assert mac_tx_tdata = x"20" report "T7: arp incorrect src mac 2"; wait for clk_period; |
assert mac_tx_tdata = x"21" report "T7: arp incorrect src mac 3"; wait for clk_period; |
assert mac_tx_tdata = x"22" report "T7: arp incorrect src mac 4"; wait for clk_period; |
assert mac_tx_tdata = x"23" report "T7: arp incorrect src mac 5"; wait for clk_period; |
|
assert mac_tx_tdata = x"08" report "T7: arp incorrect pkt_type 0"; wait for clk_period; |
assert mac_tx_tdata = x"06" report "T7: arp incorrect pkt type 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T7: arp incorrect HW type.0"; wait for clk_period; |
assert mac_tx_tdata = x"01" report "T7: arp incorrect HW type.1"; wait for clk_period; |
assert mac_tx_tdata = x"08" report "T7: arp incorrect prot.0"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T7: arp incorrect prot.1"; wait for clk_period; |
assert mac_tx_tdata = x"06" report "T7: arp incorrect HW size"; wait for clk_period; |
assert mac_tx_tdata = x"04" report "T7: arp incorrect prot size"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T7: arp incorrect opcode.0"; wait for clk_period; |
assert mac_tx_tdata = x"01" report "T7: arp incorrect opcode.1"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T7: arp incorrect sndr mac 0"; wait for clk_period; |
assert mac_tx_tdata = x"23" report "T7: arp incorrect sndr mac 1"; wait for clk_period; |
assert mac_tx_tdata = x"20" report "T7: arp incorrect sndr mac 2"; wait for clk_period; |
assert mac_tx_tdata = x"21" report "T7: arp incorrect sndr mac 3"; wait for clk_period; |
assert mac_tx_tdata = x"22" report "T7: arp incorrect sndr mac 4"; wait for clk_period; |
assert mac_tx_tdata = x"23" report "T7: arp incorrect sndr mac 5"; wait for clk_period; |
|
assert mac_tx_tdata = x"c0" report "T7: arp incorrect sndr ip 0"; wait for clk_period; |
assert mac_tx_tdata = x"a8" report "T7: arp incorrect sndr ip 1"; wait for clk_period; |
assert mac_tx_tdata = x"05" report "T7: arp incorrect sndr ip 2"; wait for clk_period; |
assert mac_tx_tdata = x"09" report "T7: arp incorrect sndr ip 3"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T7: arp incorrect trg mac 0"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T7: arp incorrect trg mac 1"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T7: arp incorrect trg mac 2"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T7: arp incorrect trg mac 3"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T7: arp incorrect trg mac 4"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T7: arp incorrect trg mac 5"; wait for clk_period; |
|
assert mac_tx_tdata = x"c0" report "T7: arp incorrect trg ip 0"; wait for clk_period; |
assert mac_tx_tdata = x"a8" report "T7: arp incorrect trg ip 1"; wait for clk_period; |
assert mac_tx_tdata = x"05" report "T7: arp incorrect trg ip 2"; |
assert mac_tx_tlast = '0' report "T7: arp tlast asserted too soon"; |
wait for clk_period; |
|
assert mac_tx_tdata = x"01" report "T7: arp incorrect trg ip 3"; |
assert mac_tx_tlast = '1' report "T7: arp tlast should be set"; |
wait for clk_period; |
|
assert udp_tx_result = IPTX_RESULT_SENDING report "T7: arp TX should still be in sending phase"; |
|
wait for clk_period*5; |
|
report "T7: feeding in an arp reply: I have c0180501 at mac 021503230454"; |
|
mac_rx_tvalid <= '1'; |
-- dst MAC (bc) |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
mac_rx_tdata <= x"ff"; wait for clk_period; |
-- src MAC |
mac_rx_tdata <= x"02"; wait for clk_period; |
mac_rx_tdata <= x"15"; wait for clk_period; |
mac_rx_tdata <= x"03"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"04"; wait for clk_period; |
mac_rx_tdata <= x"54"; wait for clk_period; |
-- type |
mac_rx_tdata <= x"08"; wait for clk_period; |
mac_rx_tdata <= x"06"; wait for clk_period; |
-- HW type |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"01"; wait for clk_period; |
-- Protocol type |
mac_rx_tdata <= x"08"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
-- HW size |
mac_rx_tdata <= x"06"; wait for clk_period; |
-- protocol size |
mac_rx_tdata <= x"04"; wait for clk_period; |
-- Opcode |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"02"; wait for clk_period; |
-- Sender MAC |
mac_rx_tdata <= x"02"; wait for clk_period; |
mac_rx_tdata <= x"15"; wait for clk_period; |
mac_rx_tdata <= x"03"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"04"; wait for clk_period; |
mac_rx_tdata <= x"54"; wait for clk_period; |
-- Sender IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"01"; wait for clk_period; |
-- Target MAC |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
mac_rx_tdata <= x"20"; wait for clk_period; |
mac_rx_tdata <= x"21"; wait for clk_period; |
mac_rx_tdata <= x"22"; wait for clk_period; |
mac_rx_tdata <= x"23"; wait for clk_period; |
-- Target IP |
mac_rx_tdata <= x"c0"; wait for clk_period; |
mac_rx_tdata <= x"a8"; wait for clk_period; |
mac_rx_tdata <= x"05"; wait for clk_period; |
mac_rx_tdata <= x"09"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tlast <= '1'; |
mac_rx_tdata <= x"00"; wait for clk_period; |
mac_rx_tlast <= '0'; |
mac_rx_tvalid <= '0'; |
wait for clk_period; |
|
assert udp_tx_result = IPTX_RESULT_SENDING report "T7: TX should still be sending"; |
|
report "T7: waiting for mac data tx"; |
if mac_tx_tvalid = '0' then |
wait until mac_tx_tvalid = '1'; |
wait for clk_period; |
end if; |
report "T7: starting mac data tx"; |
|
-- check the mac data being transmitted |
assert mac_tx_tdata = x"02" report "T7: incorrect dst mac 0"; wait for clk_period; |
assert mac_tx_tdata = x"15" report "T7: incorrect dst mac 1"; wait for clk_period; |
assert mac_tx_tdata = x"03" report "T7: incorrect dst mac 2"; wait for clk_period; |
assert mac_tx_tdata = x"23" report "T7: incorrect dst mac 3"; wait for clk_period; |
assert mac_tx_tdata = x"04" report "T7: incorrect dst mac 4"; wait for clk_period; |
assert mac_tx_tdata = x"54" report "T7: incorrect dst mac 5"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T7: incorrect src mac 0"; wait for clk_period; |
assert mac_tx_tdata = x"23" report "T7: incorrect src mac 1"; wait for clk_period; |
assert mac_tx_tdata = x"20" report "T7: incorrect src mac 2"; wait for clk_period; |
assert mac_tx_tdata = x"21" report "T7: incorrect src mac 3"; wait for clk_period; |
assert mac_tx_tdata = x"22" report "T7: incorrect src mac 4"; wait for clk_period; |
assert mac_tx_tdata = x"23" report "T7: incorrect src mac 5"; wait for clk_period; |
|
assert mac_tx_tdata = x"08" report "T7: incorrect pkt_type 0"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T7: incorrect pkt type 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"45" report "T7: incorrect ver.hlen"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T7: incorrect srv type"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T7: incorrect len 0"; wait for clk_period; |
assert mac_tx_tdata = x"20" report "T7: incorrect len 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T7: incorrect ident 0"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T7: incorrect ident 1"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T7: incorrect flag&frag 0"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T7: incorrect flag&frag 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"80" report "T7: incorrect TTL"; wait for clk_period; |
assert mac_tx_tdata = x"11" report "T7: incorrect protocol"; wait for clk_period; |
assert mac_tx_tdata = x"af" report "T7: incorrect hdr.cks 0"; wait for clk_period; |
assert mac_tx_tdata = x"72" report "T7: incorrect hdr.cks 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"c0" report "T7: incorrect src ip 0"; wait for clk_period; |
assert mac_tx_tdata = x"a8" report "T7: incorrect src ip 1"; wait for clk_period; |
assert mac_tx_tdata = x"05" report "T7: incorrect src ip 2"; wait for clk_period; |
assert mac_tx_tdata = x"09" report "T7: incorrect src ip 3"; wait for clk_period; |
|
assert mac_tx_tdata = x"c0" report "T7: incorrect dst ip 0"; wait for clk_period; |
assert mac_tx_tdata = x"a8" report "T7: incorrect dst ip 1"; wait for clk_period; |
assert mac_tx_tdata = x"05" report "T7: incorrect dst ip 2"; wait for clk_period; |
assert mac_tx_tdata = x"01" report "T7: incorrect dst ip 3"; wait for clk_period; |
|
assert mac_tx_tdata = x"26" report "T7: incorrect src port 0"; wait for clk_period; |
assert mac_tx_tdata = x"94" report "T7: incorrect src port 1"; wait for clk_period; |
assert mac_tx_tdata = x"f4" report "T7: incorrect dst port 0"; wait for clk_period; |
assert mac_tx_tdata = x"9a" report "T7: incorrect dst port 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"00" report "T7: incorrect udp len 0"; wait for clk_period; |
assert mac_tx_tdata = x"0c" report "T7: incorrect udp len 1"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T7: incorrect udp cks 0"; wait for clk_period; |
assert mac_tx_tdata = x"00" report "T7: incorrect udp cks 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"40" report "T7: incorrect udp data 0"; wait for clk_period; |
assert mac_tx_tdata = x"41" report "T7: incorrect udp data 1"; wait for clk_period; |
|
assert mac_tx_tdata = x"42" report "T7: incorrect udp data 2"; |
assert mac_tx_tlast = '0' report "T7: tlast asserted too soon"; wait for clk_period; |
assert mac_tx_tdata = x"43" report "T7: incorrect udp data 3"; |
assert mac_tx_tlast = '1' report "T7: tlast not asserted"; wait for clk_period; |
|
assert udp_tx_result = IPTX_RESULT_SENT report "T7: TX did not complete"; |
|
assert udp_rx_int.data.data_in_valid = '0' report "T7: udp_rx_int.data.data_in_valid not cleared"; |
assert udp_rx_int.data.data_in_last = '0' report "T7: udp_rx_int.data.data_in_last not cleared"; |
assert udp_rx_start_int = '0' report "T7: udp_rx_start not cleared"; |
assert ip_rx_hdr.num_frame_errors = x"00" report "T7: ip_rx_hdr.num_frame_errors non zero at end of test"; |
assert ip_rx_hdr.last_error_code = x"0" report "T7: ip_rx_hdr.last_error_code indicates error at end of test"; |
assert ip_pkt_count = x"06" report "T7: ip pkt cnt incorrect"; |
|
|
report "--- end of tests ---"; |
wait; |
end process; |
|
-- AUTO TX process - on receipt of any UDP pkt, send a response. data sent is modified if a broadcast was received. |
|
-- TX response process - COMB |
tx_proc_combinatorial: process( |
-- inputs |
udp_rx_start_int, udp_rx_int, udp_tx_data_out_ready_int, udp_tx_result, ip_rx_hdr, |
udp_tx_int.data.data_out_valid, PBTX, |
-- state |
state, count, tx_hdr, tx_start_reg, tx_started_reg, tx_fin_reg, |
-- controls |
next_state, set_state, set_count, set_hdr, set_tx_start, set_last, |
set_tx_started, set_tx_fin, first_byte_rx |
) |
begin |
-- set output_followers |
udp_tx_int.hdr <= tx_hdr; |
udp_tx_int.data.data_out_last <= set_last; |
udp_tx_start_int <= tx_start_reg; |
|
-- set control signal defaults |
next_state <= IDLE; |
set_state <= '0'; |
set_count <= HOLD; |
set_hdr <= '0'; |
set_tx_start <= HOLD; |
set_last <= '0'; |
set_tx_started <= HOLD; |
set_tx_fin <= HOLD; |
first_byte_rx <= (others => '0'); |
|
-- FSM |
case state is |
|
when IDLE => |
udp_tx_int.data.data_out <= (others => '0'); |
udp_tx_int.data.data_out_valid <= '0'; |
if udp_rx_start_int = '1' or PBTX = '1' then |
if udp_rx_start_int = '1' then |
first_byte_rx <= udp_rx_int.data.data_in; |
else |
first_byte_rx <= x"00"; |
end if; |
set_tx_fin <= CLR; |
set_count <= RST; |
set_hdr <= '1'; |
if udp_rx_int.data.data_in_last = '1' then |
set_tx_started <= SET; |
set_tx_start <= SET; |
next_state <= DATA_OUT; |
set_state <= '1'; |
else |
next_state <= WAIT_RX_DONE; |
set_state <= '1'; |
end if; |
end if; |
|
when WAIT_RX_DONE => |
-- wait until RX pkt fully received |
if udp_rx_int.data.data_in_last = '1' then |
set_tx_started <= SET; |
set_tx_start <= SET; |
next_state <= DATA_OUT; |
set_state <= '1'; |
end if; |
|
when DATA_OUT => |
if udp_tx_result = UDPTX_RESULT_ERR then |
-- have an error from the IP TX layer, clear down the TX |
set_tx_start <= CLR; |
set_tx_fin <= SET; |
set_tx_started <= CLR; |
next_state <= IDLE; |
set_state <= '1'; |
else |
if udp_tx_result = UDPTX_RESULT_SENDING then |
set_tx_start <= CLR; -- reset out start req as soon as we know we are sending |
end if; |
if ip_rx_hdr.is_broadcast = '1' then |
udp_tx_int.data.data_out <= std_logic_vector(count) or x"50"; |
else |
udp_tx_int.data.data_out <= std_logic_vector(count) or x"40"; |
end if; |
udp_tx_int.data.data_out_valid <= udp_tx_data_out_ready_int; |
if udp_tx_data_out_ready_int = '1' then |
if unsigned(count) = x"03" then |
set_last <= '1'; |
set_tx_fin <= SET; |
set_tx_started <= CLR; |
next_state <= IDLE; |
set_state <= '1'; |
else |
set_count <= INCR; |
end if; |
end if; |
end if; |
|
end case; |
end process; |
|
|
|
-- TX response process - SEQ |
tx_proc_sequential: process(clk_int) |
begin |
if rising_edge(clk_int) then |
if reset = '1' then |
-- reset state variables |
state <= IDLE; |
count <= x"00"; |
tx_start_reg <= '0'; |
tx_hdr.dst_ip_addr <= (others => '0'); |
tx_hdr.dst_port <= (others => '0'); |
tx_hdr.src_port <= (others => '0'); |
tx_hdr.data_length <= (others => '0'); |
tx_hdr.checksum <= (others => '0'); |
tx_started_reg <= '0'; |
tx_fin_reg <= '0'; |
PBTX_LED <= '0'; |
else |
PBTX_LED <= PBTX; |
|
-- Next rx_state processing |
if set_state = '1' then |
state <= next_state; |
else |
state <= state; |
end if; |
|
-- count processing |
case set_count is |
when RST => count <= x"00"; |
when INCR => count <= count + 1; |
when HOLD => count <= count; |
end case; |
|
-- set tx hdr |
if set_hdr = '1' then |
-- if the first byte of the rx pkt is 'B' then send to broadcast, otherwise send to reply IP |
if first_byte_rx = x"42" then |
tx_hdr.dst_ip_addr <= IP_BC_ADDR; -- send to Broadcast addr |
elsif first_byte_rx = x"43" then |
tx_hdr.dst_ip_addr <= x"c0bbccdd"; -- set dst unknown so get ARP timeout |
else |
tx_hdr.dst_ip_addr <= udp_rx_int.hdr.src_ip_addr; -- reply to sender |
end if; |
tx_hdr.dst_port <= udp_rx_int.hdr.src_port; |
tx_hdr.src_port <= udp_rx_int.hdr.dst_port; |
tx_hdr.data_length <= x"0004"; |
tx_hdr.checksum <= x"0000"; |
else |
tx_hdr <= tx_hdr; |
end if; |
|
-- set tx start signal |
case set_tx_start is |
when SET => tx_start_reg <= '1'; |
when CLR => tx_start_reg <= '0'; |
when HOLD => tx_start_reg <= tx_start_reg; |
end case; |
|
-- set tx started signal |
case set_tx_started is |
when SET => tx_started_reg <= '1'; |
when CLR => tx_started_reg <= '0'; |
when HOLD => tx_started_reg <= tx_started_reg; |
end case; |
|
-- set tx finished signal |
case set_tx_fin is |
when SET => tx_fin_reg <= '1'; |
when CLR => tx_fin_reg <= '0'; |
when HOLD => tx_fin_reg <= tx_fin_reg; |
end case; |
|
|
end if; |
end if; |
|
end process; |
|
END; |
/udp_ip_stack/tags/v1.3/bench/vhdl/arp_tb.vhd
0,0 → 1,601
-------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: |
-- |
-- Create Date: 12:35:50 05/31/2011 |
-- Design Name: |
-- Module Name: C:/Users/pjf/Documents/projects/fpga/xilinx/Network/arp1/arp_tb.vhd |
-- Project Name: arp1 |
-- Target Device: |
-- Tool versions: |
-- Description: |
-- |
-- VHDL Test Bench Created by ISE for module: arp |
-- |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Revision 0.02 - Added tests for ARP timeout |
-- Additional Comments: |
-- |
-- Notes: |
-- This testbench has been automatically generated using types std_logic and |
-- std_logic_vector for the ports of the unit under test. Xilinx recommends |
-- that these types always be used for the top-level I/O of a design in order |
-- to guarantee that the testbench will bind correctly to the post-implementation |
-- simulation model. |
-------------------------------------------------------------------------------- |
LIBRARY ieee; |
USE ieee.std_logic_1164.ALL; |
USE ieee.numeric_std.ALL; |
use work.arp_types.all; |
|
ENTITY arp_tb IS |
END arp_tb; |
|
ARCHITECTURE behavior OF arp_tb IS |
|
-- Component Declaration for the Unit Under Test (UUT) |
|
COMPONENT arp |
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 |
arp_req_req : in arp_req_req_type; |
arp_req_rslt : out arp_req_rslt_type; |
-- MAC layer RX signals |
data_in_clk : in STD_LOGIC; |
reset : in STD_LOGIC; |
data_in : in STD_LOGIC_VECTOR (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame) |
data_in_valid : in STD_LOGIC; -- indicates data_in valid on clock |
data_in_last : in STD_LOGIC; -- indicates last data in frame |
-- MAC layer TX signals |
mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx) |
mac_tx_granted : in std_logic; -- indicates that access to channel has been granted |
data_out_clk : in std_logic; |
data_out_ready : in std_logic; -- indicates system ready to consume data |
data_out_valid : out std_logic; -- indicates data out is valid |
data_out_first : out std_logic; -- with data out valid indicates the first 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) |
-- system signals |
our_mac_address : in STD_LOGIC_VECTOR (47 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 |
); |
END COMPONENT; |
|
|
--Inputs |
signal clk : std_logic := '0'; |
signal reset : std_logic := '0'; |
signal data_in : std_logic_vector(7 downto 0) := (others => '0'); |
signal data_in_valid : std_logic := '0'; |
signal data_in_last : std_logic := '0'; |
signal our_mac_address : std_logic_vector(47 downto 0) := (others => '0'); |
signal our_ip_address : std_logic_vector(31 downto 0) := (others => '0'); |
signal data_out_ready : std_logic; |
signal data_out_valid : std_logic; |
signal data_out_first : std_logic; |
signal data_out_last : std_logic; |
signal data_out : 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_rslt : arp_req_rslt_type; |
signal mac_tx_req : std_logic; |
signal mac_tx_granted : std_logic; |
signal control : arp_control_type; |
|
|
-- Clock period definitions |
constant clk_period : time := 8 ns; |
|
BEGIN |
|
-- Instantiate the Unit Under Test (UUT) |
uut: arp generic map ( |
CLOCK_FREQ => 10, -- artificially low count to enable pragmatic testing |
ARP_TIMEOUT => 20 |
) |
PORT MAP ( |
-- lookup request mappings |
arp_req_req => arp_req_req, |
arp_req_rslt => arp_req_rslt, |
-- rx mappings |
data_in_clk => clk, |
reset => reset, |
data_in => data_in, |
data_in_valid => data_in_valid, |
data_in_last => data_in_last, |
-- tx mappings |
mac_tx_req => mac_tx_req, |
mac_tx_granted => mac_tx_granted, |
data_out_clk => clk, |
data_out_ready => data_out_ready, |
data_out_valid => data_out_valid, |
data_out_first => data_out_first, |
data_out_last => data_out_last, |
data_out => data_out, |
-- system mappings |
our_mac_address => our_mac_address, |
our_ip_address => our_ip_address, |
control => control, |
req_count => req_count |
); |
|
-- Clock process definitions |
clk_process :process |
begin |
clk <= '0'; |
wait for clk_period/2; |
clk <= '1'; |
wait for clk_period/2; |
end process; |
|
|
-- Stimulus process |
stim_proc: process |
begin |
-- hold reset state for 100 ns. |
wait for 100 ns; |
|
our_ip_address <= x"c0a80509"; -- 192.168.5.9 |
our_mac_address <= x"002320212223"; |
mac_tx_granted <= '1'; -- FIXME 0 |
control.clear_cache <= '0'; |
|
reset <= '1'; |
wait for clk_period*10; |
reset <= '0'; |
wait for clk_period*5; |
|
assert mac_tx_req = '0' report "mac_tx_req asserted on reset"; |
|
-- insert stimulus here |
arp_req_req.lookup_req <= '0'; |
arp_req_req.ip <= (others => '0'); |
data_out_ready <= '1'; |
|
report "T1: Send an ARP request: who has 192.168.5.9? Tell 192.168.5.1"; |
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"00"; wait for clk_period; |
data_in <= x"23"; wait for clk_period; |
data_in <= x"18"; wait for clk_period; |
data_in <= x"29"; wait for clk_period; |
data_in <= x"26"; wait for clk_period; |
data_in <= x"7c"; 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"01"; wait for clk_period; |
-- Sender MAC |
data_in <= x"00"; wait for clk_period; |
data_in <= x"23"; wait for clk_period; |
data_in <= x"18"; wait for clk_period; |
data_in <= x"29"; wait for clk_period; |
data_in <= x"26"; wait for clk_period; |
data_in <= x"7c"; 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"01"; wait for clk_period; |
-- Target MAC |
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 <= x"00"; wait for clk_period; |
data_in <= x"00"; wait for clk_period; |
data_in <= x"00"; 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'; |
|
-- check tx arbitration signals |
|
assert mac_tx_req = '1' report "T1: mac_tx_req not set"; |
|
-- ready to tx |
data_out_ready <= '1'; |
mac_tx_granted <= '1'; |
wait for clk_period*10; |
data_out_ready <= '0'; |
wait for clk_period*2; |
data_out_ready <= '1'; |
wait for clk_period*50; |
|
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_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"00"; wait for clk_period; |
data_in <= x"23"; wait for clk_period; |
data_in <= x"18"; wait for clk_period; |
data_in <= x"29"; wait for clk_period; |
data_in <= x"26"; wait for clk_period; |
data_in <= x"7c"; 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"01"; wait for clk_period; |
-- Sender MAC |
data_in <= x"00"; wait for clk_period; |
data_in <= x"23"; wait for clk_period; |
data_in <= x"18"; wait for clk_period; |
data_in <= x"29"; wait for clk_period; |
data_in <= x"26"; wait for clk_period; |
data_in <= x"7c"; 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"01"; wait for clk_period; |
-- Target MAC |
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 <= x"00"; wait for clk_period; |
data_in <= x"00"; wait for clk_period; |
data_in <= x"00"; 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'; |
|
-- ready to tx |
wait for clk_period*10; |
data_out_ready <= '1'; |
|
wait for clk_period*50; |
|
report "T3 Send a request for the IP that is already cached"; |
arp_req_req.ip <= x"c0a80501"; |
arp_req_req.lookup_req <= '1'; |
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'; |
wait for clk_period; |
wait for clk_period*10; |
|
wait for clk_period*20; |
assert mac_tx_req = '0' report "T3: should not be requesting TX channel"; |
|
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.lookup_req <= '1'; |
wait for clk_period; |
arp_req_req.lookup_req <= '0'; |
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 |
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"12"; 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"12"; 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"03"; 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 "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 ---"; |
wait; |
end process; |
|
END; |
/udp_ip_stack/tags/v1.3/bench/vhdl/IPv4_RX_tb.vhd
0,0 → 1,391
-------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: |
-- |
-- Create Date: 17:32:02 06/03/2011 |
-- Design Name: |
-- Module Name: C:/Users/pjf/Documents/projects/fpga/xilinx/Network/ip1/IPv4_RX_tb.vhd |
-- Project Name: ip1 |
-- Target Device: |
-- Tool versions: |
-- Description: |
-- |
-- VHDL Test Bench Created by ISE for module: IPv4_RX |
-- |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Additional Comments: |
-- |
-- Notes: |
-- This testbench has been automatically generated using types std_logic and |
-- std_logic_vector for the ports of the unit under test. Xilinx recommends |
-- that these types always be used for the top-level I/O of a design in order |
-- to guarantee that the testbench will bind correctly to the post-implementation |
-- simulation model. |
-------------------------------------------------------------------------------- |
library IEEE; |
use IEEE.STD_LOGIC_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.axi.all; |
use work.ipv4_types.all; |
use work.arp_types.all; |
|
|
ENTITY IPv4_RX_tb IS |
END IPv4_RX_tb; |
|
ARCHITECTURE behavior OF IPv4_RX_tb IS |
|
-- Component Declaration for the Unit Under Test (UUT) |
|
COMPONENT IPv4_RX |
PORT( |
-- IP Layer signals |
ip_rx : out ipv4_rx_type; |
ip_rx_start : out std_logic; -- indicates receipt of ip frame. |
-- system signals |
clk : in STD_LOGIC; -- same clock used to clock mac data and ip data |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
-- MAC layer RX signals |
mac_data_in : in STD_LOGIC_VECTOR (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame) |
mac_data_in_valid : in STD_LOGIC; -- indicates data_in valid on clock |
mac_data_in_last : in STD_LOGIC -- indicates last data in frame |
); |
END COMPONENT; |
|
|
--Inputs |
signal clk : std_logic := '0'; |
signal reset : std_logic := '0'; |
signal our_ip_address : std_logic_vector(31 downto 0) := (others => '0'); |
signal mac_data_in : std_logic_vector(7 downto 0) := (others => '0'); |
signal mac_data_in_valid : std_logic := '0'; |
signal mac_data_in_last : std_logic := '0'; |
|
--Outputs |
signal ip_rx_start : std_logic; |
signal ip_rx : ipv4_rx_type; |
|
-- Clock period definitions |
constant clk_period : time := 8 ns; |
|
BEGIN |
|
-- Instantiate the Unit Under Test (UUT) |
uut: IPv4_RX PORT MAP ( |
ip_rx => ip_rx, |
ip_rx_start => ip_rx_start, |
clk => clk, |
reset => reset, |
our_ip_address => our_ip_address, |
mac_data_in => mac_data_in, |
mac_data_in_valid => mac_data_in_valid, |
mac_data_in_last => mac_data_in_last |
); |
|
-- Clock process definitions |
clk_process :process |
begin |
clk <= '0'; |
wait for clk_period/2; |
clk <= '1'; |
wait for clk_period/2; |
end process; |
|
|
-- Stimulus process |
stim_proc: process |
begin |
-- hold reset state for 100 ns. |
wait for 100 ns; |
|
our_ip_address <= x"c0a80509"; -- 192.168.5.9 |
mac_data_in_valid <= '0'; |
mac_data_in_last <= '0'; |
|
reset <= '1'; |
wait for clk_period*10; |
reset <= '0'; |
wait for clk_period*5; |
|
-- check reset conditions |
assert ip_rx_start = '0' report "ip_rx_start not initialised correctly on reset"; |
assert ip_rx.hdr.is_valid = '0' report "ip_rx.hdr.is_valid not initialised correctly on reset"; |
assert ip_rx.hdr.protocol = x"00" report "ip_rx.hdr.protocol not initialised correctly on reset"; |
assert ip_rx.hdr.data_length = x"0000" report "ip_rx.hdr.data_length not initialised correctly on reset"; |
assert ip_rx.hdr.src_ip_addr = x"00000000" report "ip_rx.hdr.src_ip_addr not initialised correctly on reset"; |
assert ip_rx.hdr.num_frame_errors = x"00" report "ip_rx.hdr.num_frame_errors not initialised correctly on reset"; |
assert ip_rx.data.data_in = x"00" report "ip_rx.data.data_in not initialised correctly on reset"; |
assert ip_rx.data.data_in_valid = '0' report "ip_rx.data.data_in_valid not initialised correctly on reset"; |
assert ip_rx.data.data_in_last = '0' report "ip_rx.data.data_in_last not initialised correctly on reset"; |
|
-- insert stimulus here |
|
------------ |
-- TEST 1 -- basic functional rx test with received ip pkt |
------------ |
|
report "T1: Send an eth frame with IP pkt dst ip_address c0a80509, dst mac 002320212223"; |
|
mac_data_in_valid <= '1'; |
-- dst MAC (bc) |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"23"; wait for clk_period; |
mac_data_in <= x"20"; wait for clk_period; |
mac_data_in <= x"21"; wait for clk_period; |
mac_data_in <= x"22"; wait for clk_period; |
mac_data_in <= x"23"; wait for clk_period; |
-- src MAC |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"23"; wait for clk_period; |
mac_data_in <= x"18"; wait for clk_period; |
mac_data_in <= x"29"; wait for clk_period; |
mac_data_in <= x"26"; wait for clk_period; |
mac_data_in <= x"7c"; wait for clk_period; |
-- type |
mac_data_in <= x"08"; wait for clk_period; -- IP pkt |
mac_data_in <= x"00"; wait for clk_period; |
-- ver & HL / service type |
mac_data_in <= x"45"; wait for clk_period; |
mac_data_in <= x"00"; wait for clk_period; |
-- total len |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"18"; wait for clk_period; |
-- ID |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"00"; wait for clk_period; |
-- flags & frag |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"00"; wait for clk_period; |
-- TTL |
mac_data_in <= x"00"; wait for clk_period; |
-- Protocol |
mac_data_in <= x"11"; wait for clk_period; |
-- Header CKS |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"00"; wait for clk_period; |
-- SRC IP |
mac_data_in <= x"c0"; wait for clk_period; |
mac_data_in <= x"a8"; wait for clk_period; |
mac_data_in <= x"05"; wait for clk_period; |
mac_data_in <= x"01"; wait for clk_period; |
-- DST IP |
mac_data_in <= x"c0"; wait for clk_period; |
mac_data_in <= x"a8"; wait for clk_period; |
mac_data_in <= x"05"; wait for clk_period; |
mac_data_in <= x"09"; wait for clk_period; |
|
-- user data |
mac_data_in <= x"24"; wait for clk_period; |
|
assert ip_rx.hdr.is_valid = '1' report "T1: ip_rx.hdr.is_valid not set"; |
assert ip_rx.hdr.protocol = x"11" report "T1: ip_rx.hdr.protocol not set correctly"; |
assert ip_rx.hdr.data_length = x"0004" report "T1: ip_rx.hdr.data_length not set correctly"; |
assert ip_rx.hdr.src_ip_addr = x"c0a80501" report "T1: ip_rx.hdr.src_ip_addr not set correctly"; |
assert ip_rx.hdr.num_frame_errors = x"00" report "T1: ip_rx.hdr.num_frame_errors not set correctly"; |
assert ip_rx.hdr.last_error_code = x"0" report "T1: ip_rx.hdr.last_error_code not set correctly"; |
assert ip_rx.hdr.is_broadcast = '0' report "T1: ip_rx.hdr.is_broadcast should not be set"; |
assert ip_rx_start = '1' report "T1: ip_rx_start not set"; |
assert ip_rx.data.data_in_valid = '1' report "T1: ip_rx.data.data_in_valid not set"; |
|
mac_data_in <= x"25"; wait for clk_period; |
mac_data_in <= x"26"; wait for clk_period; |
mac_data_in <= x"27"; mac_data_in_last <= '1';wait for clk_period; |
|
assert ip_rx.data.data_in_last = '1' report "T1: ip_rx.data.data_in_last not set"; |
|
mac_data_in <= x"00"; |
mac_data_in_last <= '0'; |
mac_data_in_valid <= '0'; |
wait for clk_period; |
|
assert ip_rx.data.data_in_valid = '0' report "T1: ip_rx.data.data_in_valid not cleared"; |
assert ip_rx.data.data_in_last = '0' report "T1: ip_rx.data.data_in_last not cleared"; |
assert ip_rx.hdr.num_frame_errors = x"00" report "T1: ip_rx.hdr.num_frame_errors non zero at end of test"; |
assert ip_rx.hdr.last_error_code = x"0" report "T1: ip_rx.hdr.last_error_code indicates error at end of test"; |
assert ip_rx_start = '0' report "T1: ip_rx_start not cleared"; |
|
------------ |
-- TEST 2 -- basic functional rx test with received ip pkt that is not for us |
------------ |
|
report "T2: Send an eth frame with IP pkt dst ip_address c0a80507, dst mac 002320212223"; |
|
mac_data_in_valid <= '1'; |
-- dst MAC (bc) |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"23"; wait for clk_period; |
mac_data_in <= x"20"; wait for clk_period; |
mac_data_in <= x"21"; wait for clk_period; |
mac_data_in <= x"22"; wait for clk_period; |
mac_data_in <= x"23"; wait for clk_period; |
|
assert ip_rx.hdr.is_valid = '0' report "T2: ip_rx.hdr.is_valid remains set"; |
|
-- src MAC |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"23"; wait for clk_period; |
mac_data_in <= x"18"; wait for clk_period; |
mac_data_in <= x"29"; wait for clk_period; |
mac_data_in <= x"26"; wait for clk_period; |
mac_data_in <= x"7c"; wait for clk_period; |
-- type |
mac_data_in <= x"08"; wait for clk_period; -- IP pkt |
mac_data_in <= x"00"; wait for clk_period; |
-- ver & HL / service type |
mac_data_in <= x"45"; wait for clk_period; |
mac_data_in <= x"00"; wait for clk_period; |
-- total len |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"18"; wait for clk_period; |
-- ID |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"00"; wait for clk_period; |
-- flags & frag |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"00"; wait for clk_period; |
-- TTL |
mac_data_in <= x"00"; wait for clk_period; |
-- Protocol |
mac_data_in <= x"11"; wait for clk_period; |
-- Header CKS |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"00"; wait for clk_period; |
-- SRC IP |
mac_data_in <= x"c0"; wait for clk_period; |
mac_data_in <= x"a8"; wait for clk_period; |
mac_data_in <= x"05"; wait for clk_period; |
mac_data_in <= x"02"; wait for clk_period; |
-- DST IP |
mac_data_in <= x"c0"; wait for clk_period; |
mac_data_in <= x"a8"; wait for clk_period; |
mac_data_in <= x"05"; wait for clk_period; |
mac_data_in <= x"07"; wait for clk_period; |
|
-- user data |
mac_data_in <= x"24"; wait for clk_period; |
|
assert ip_rx.hdr.is_valid = '1' report "T2: ip_rx.hdr.is_valid not set"; |
assert ip_rx.hdr.protocol = x"11" report "T2: ip_rx.hdr.protocol not set correctly"; |
assert ip_rx.hdr.data_length = x"0004" report "T2: ip_rx.hdr.data_length not set correctly"; |
assert ip_rx.hdr.src_ip_addr = x"c0a80502" report "T2: ip_rx.hdr.src_ip_addr not set correctly"; |
assert ip_rx.hdr.num_frame_errors = x"00" report "T2: ip_rx.hdr.num_frame_errors not set correctly"; |
assert ip_rx.hdr.is_broadcast = '0' report "T2: ip_rx.hdr.is_broadcast should not be set"; |
assert ip_rx.hdr.last_error_code = x"0" report "T2: ip_rx.hdr.last_error_code not set correctly"; |
assert ip_rx_start = '0' report "T2: ip_rx_start set when pkt not for us"; |
assert ip_rx.data.data_in_valid = '0' report "T2: ip_rx.data.data_in_valid set when pkt not for us"; |
|
mac_data_in <= x"25"; wait for clk_period; |
mac_data_in <= x"26"; wait for clk_period; |
mac_data_in <= x"27"; mac_data_in_last <= '1';wait for clk_period; |
|
assert ip_rx.data.data_in_last = '0' report "T2: ip_rx.data.data_in_last set"; |
|
mac_data_in <= x"00"; |
mac_data_in_last <= '0'; |
mac_data_in_valid <= '0'; |
wait for clk_period; |
|
assert ip_rx.data.data_in_valid = '0' report "T2: ip_rx.data.data_in_valid not cleared"; |
assert ip_rx.data.data_in_last = '0' report "T2: ip_rx.data.data_in_last not cleared"; |
assert ip_rx.hdr.num_frame_errors = x"00" report "T2: ip_rx.hdr.num_frame_errors non zero at end of test"; |
assert ip_rx.hdr.last_error_code = x"0" report "T2: ip_rx.hdr.last_error_code indicates error at end of test"; |
assert ip_rx_start = '0' report "T2: ip_rx_start not cleared"; |
|
wait for clk_period*20; |
|
|
------------ |
-- TEST 3 -- RX Broadcast pkt |
------------ |
|
report "T3: Send an eth frame with IP pkt dst ip_address = BC, dst mac = BC"; |
|
mac_data_in_valid <= '1'; |
-- dst MAC (bc) |
mac_data_in <= x"ff"; wait for clk_period; |
mac_data_in <= x"ff"; wait for clk_period; |
mac_data_in <= x"ff"; wait for clk_period; |
mac_data_in <= x"ff"; wait for clk_period; |
mac_data_in <= x"ff"; wait for clk_period; |
mac_data_in <= x"ff"; wait for clk_period; |
-- src MAC |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"23"; wait for clk_period; |
mac_data_in <= x"18"; wait for clk_period; |
mac_data_in <= x"29"; wait for clk_period; |
mac_data_in <= x"26"; wait for clk_period; |
mac_data_in <= x"7c"; wait for clk_period; |
-- type |
mac_data_in <= x"08"; wait for clk_period; -- IP pkt |
mac_data_in <= x"00"; wait for clk_period; |
-- ver & HL / service type |
mac_data_in <= x"45"; wait for clk_period; |
mac_data_in <= x"00"; wait for clk_period; |
-- total len |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"18"; wait for clk_period; |
-- ID |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"00"; wait for clk_period; |
-- flags & frag |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"00"; wait for clk_period; |
-- TTL |
mac_data_in <= x"00"; wait for clk_period; |
-- Protocol |
mac_data_in <= x"11"; wait for clk_period; |
-- Header CKS |
mac_data_in <= x"00"; wait for clk_period; |
mac_data_in <= x"00"; wait for clk_period; |
-- SRC IP |
mac_data_in <= x"c0"; wait for clk_period; |
mac_data_in <= x"a8"; wait for clk_period; |
mac_data_in <= x"05"; wait for clk_period; |
mac_data_in <= x"01"; wait for clk_period; |
-- DST IP |
mac_data_in <= x"ff"; wait for clk_period; |
mac_data_in <= x"ff"; wait for clk_period; |
mac_data_in <= x"ff"; wait for clk_period; |
mac_data_in <= x"ff"; wait for clk_period; |
|
-- user data |
mac_data_in <= x"24"; wait for clk_period; |
|
assert ip_rx.hdr.is_valid = '1' report "T3: ip_rx.hdr.is_valid not set"; |
assert ip_rx.hdr.protocol = x"11" report "T3: ip_rx.hdr.protocol not set correctly"; |
assert ip_rx.hdr.data_length = x"0004" report "T3: ip_rx.hdr.data_length not set correctly"; |
assert ip_rx.hdr.src_ip_addr = x"c0a80501" report "T3: ip_rx.hdr.src_ip_addr not set correctly"; |
assert ip_rx.hdr.num_frame_errors = x"00" report "T3: ip_rx.hdr.num_frame_errors not set correctly"; |
assert ip_rx.hdr.is_broadcast = '1' report "T3: ip_rx.hdr.is_broadcast not set"; |
assert ip_rx.hdr.last_error_code = x"0" report "T3: ip_rx.hdr.last_error_code not set correctly"; |
assert ip_rx_start = '1' report "T3: ip_rx_start not set"; |
assert ip_rx.data.data_in_valid = '1' report "T3: ip_rx.data.data_in_valid not set"; |
|
mac_data_in <= x"25"; wait for clk_period; |
mac_data_in <= x"26"; wait for clk_period; |
mac_data_in <= x"27"; mac_data_in_last <= '1';wait for clk_period; |
|
assert ip_rx.data.data_in_last = '1' report "T3: ip_rx.data.data_in_last not set"; |
|
mac_data_in <= x"00"; |
mac_data_in_last <= '0'; |
mac_data_in_valid <= '0'; |
wait for clk_period; |
|
assert ip_rx.data.data_in_valid = '0' report "T3: ip_rx.data.data_in_valid not cleared"; |
assert ip_rx.data.data_in_last = '0' report "T3: ip_rx.data.data_in_last not cleared"; |
assert ip_rx.hdr.num_frame_errors = x"00" report "T3: ip_rx.hdr.num_frame_errors non zero at end of test"; |
assert ip_rx.hdr.last_error_code = x"0" report "T3: ip_rx.hdr.last_error_code indicates error at end of test"; |
assert ip_rx_start = '0' report "T3: ip_rx_start not cleared"; |
|
|
report "--- end of tests ---"; |
|
wait; |
end process; |
|
END; |
/udp_ip_stack/tags/v1.3/bench/vhdl/UDP_RX_tb.vhd
0,0 → 1,325
-------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: |
-- |
-- Create Date: 16:53:03 06/10/2011 |
-- Design Name: |
-- Module Name: C:/Users/pjf/Documents/projects/fpga/xilinx/Network/ip1/UDP_RX_tb.vhd |
-- Project Name: ip1 |
-- Target Device: |
-- Tool versions: |
-- Description: |
-- |
-- VHDL Test Bench Created by ISE for module: UDP_RX |
-- |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Additional Comments: |
-- |
-- Notes: |
-- This testbench has been automatically generated using types std_logic and |
-- std_logic_vector for the ports of the unit under test. Xilinx recommends |
-- that these types always be used for the top-level I/O of a design in order |
-- to guarantee that the testbench will bind correctly to the post-implementation |
-- simulation model. |
-------------------------------------------------------------------------------- |
library IEEE; |
use IEEE.STD_LOGIC_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.axi.all; |
use work.ipv4_types.all; |
|
ENTITY UDP_RX_tb IS |
END UDP_RX_tb; |
|
ARCHITECTURE behavior OF UDP_RX_tb IS |
|
-- Component Declaration for the Unit Under Test (UUT) |
|
COMPONENT UDP_RX |
PORT( |
-- UDP Layer signals |
udp_rxo : inout udp_rx_type; |
udp_rx_start : out std_logic; -- indicates receipt of udp header |
-- system signals |
clk : in STD_LOGIC; |
reset : in STD_LOGIC; |
-- IP layer RX signals |
ip_rx_start : in std_logic; -- indicates receipt of ip header |
ip_rx : inout ipv4_rx_type |
); |
END COMPONENT; |
|
|
--Inputs |
signal clk : std_logic := '0'; |
signal reset : std_logic := '0'; |
signal ip_rx_start : std_logic := '0'; |
|
--BiDirs |
signal udp_rxo : udp_rx_type; |
signal ip_rx : ipv4_rx_type; |
|
--Outputs |
signal udp_rx_start : std_logic; |
|
-- Clock period definitions |
constant clk_period : time := 8 ns; |
|
BEGIN |
|
-- Instantiate the Unit Under Test (UUT) |
uut: UDP_RX PORT MAP ( |
udp_rxo => udp_rxo, |
udp_rx_start => udp_rx_start, |
clk => clk, |
reset => reset, |
ip_rx_start => ip_rx_start, |
ip_rx => ip_rx |
); |
|
-- Clock process definitions |
clk_process :process |
begin |
clk <= '0'; |
wait for clk_period/2; |
clk <= '1'; |
wait for clk_period/2; |
end process; |
|
|
-- Stimulus process |
stim_proc: process |
begin |
-- hold reset state for 100 ns. |
wait for 100 ns; |
ip_rx_start <= '0'; |
ip_rx.data.data_in_valid <= '0'; |
ip_rx.data.data_in_last <= '0'; |
ip_rx.hdr.is_valid <= '0'; |
ip_rx.hdr.protocol <= (others => '0'); |
ip_rx.hdr.num_frame_errors <= (others => '0'); |
ip_rx.hdr.last_error_code <= (others => '0'); |
ip_rx.hdr.is_broadcast <= '0'; |
|
reset <= '1'; |
wait for clk_period*10; |
reset <= '0'; |
wait for clk_period*5; |
reset <= '0'; |
|
-- check reset conditions |
assert udp_rx_start = '0' report "udp_rx_start not initialised correctly on reset"; |
assert udp_rxo.hdr.is_valid = '0' report "udp_rxo.hdr.is_valid not initialised correctly on reset"; |
assert udp_rxo.data.data_in = x"00" report "udp_rxo.data.data_in not initialised correctly on reset"; |
assert udp_rxo.data.data_in_valid = '0' report "udp_rxo.data.data_in_valid not initialised correctly on reset"; |
assert udp_rxo.data.data_in_last = '0' report "udp_rxo.data.data_in_last not initialised correctly on reset"; |
|
-- insert stimulus here |
|
------------ |
-- TEST 1 -- basic functional rx test with received ip pkt |
------------ |
|
report "T1: Send an ip frame with IP src ip_address c0a80501, udp protocol from port x1498 to port x8724 and 3 bytes data"; |
|
ip_rx_start <= '1'; |
ip_rx.data.data_in_valid <= '0'; |
ip_rx.data.data_in_last <= '0'; |
ip_rx.hdr.is_valid <= '1'; |
ip_rx.hdr.protocol <= x"11"; -- UDP |
ip_rx.hdr.data_length <= x"000b"; |
ip_rx.hdr.src_ip_addr<= x"c0a80501"; |
wait for clk_period*3; |
-- now send the data |
ip_rx.data.data_in_valid <= '1'; |
ip_rx.data.data_in <= x"14"; wait for clk_period; -- src port |
ip_rx.data.data_in <= x"98"; wait for clk_period; |
ip_rx.data.data_in <= x"87"; wait for clk_period; -- dst port |
ip_rx.data.data_in <= x"24"; wait for clk_period; |
ip_rx.data.data_in <= x"00"; wait for clk_period; -- len (hdr + data) |
ip_rx.data.data_in <= x"0b"; wait for clk_period; |
ip_rx.data.data_in <= x"00"; wait for clk_period; -- mty cks |
ip_rx.data.data_in <= x"00"; wait for clk_period; |
-- udp hdr should be valid |
assert udp_rxo.hdr.is_valid = '1' report "T1: udp_rxo.hdr.is_valid not set"; |
|
ip_rx.data.data_in <= x"41"; wait for clk_period; -- data |
|
assert udp_rxo.hdr.src_ip_addr = x"c0a80501" report "T1: udp_rxo.hdr.src_ip_addr not set correctly"; |
assert udp_rxo.hdr.src_port = x"1498" report "T1: udp_rxo.hdr.src_port not set correctly"; |
assert udp_rxo.hdr.dst_port = x"8724" report "T1: udp_rxo.hdr.dst_port not set correctly"; |
assert udp_rxo.hdr.data_length = x"0003" report "T1: udp_rxo.hdr.data_length not set correctly"; |
assert udp_rx_start = '1' report "T1: udp_rx_start not set"; |
assert udp_rxo.data.data_in_valid = '1' report "T1: udp_rxo.data.data_in_valid not set"; |
|
ip_rx.data.data_in <= x"45"; wait for clk_period; -- data |
ip_rx.data.data_in <= x"49"; ip_rx.data.data_in_last <= '1'; wait for clk_period; |
assert udp_rxo.data.data_in_last = '1' report "T1: udp_rxo.data.data_in_last not set"; |
ip_rx_start <= '0'; |
ip_rx.data.data_in_valid <= '0'; |
ip_rx.data.data_in_last <= '0'; |
ip_rx.hdr.is_valid <= '0'; |
wait for clk_period; |
assert udp_rxo.data.data_in = x"00" report "T1: udp_rxo.data.data_in not cleared"; |
assert udp_rxo.data.data_in_valid = '0' report "T1: udp_rxo.data.data_in_valid not cleared"; |
assert udp_rxo.data.data_in_last = '0' report "T1: udp_rxo.data.data_in_last not cleared"; |
|
wait for clk_period; |
|
------------ |
-- TEST 2 -- ability to receive 2nd ip pkt |
------------ |
|
report "T2: Send an ip frame with IP src ip_address c0a80501, udp protocol from port x7623 to port x0365 and 5 bytes data"; |
|
ip_rx_start <= '1'; |
ip_rx.data.data_in_valid <= '0'; |
ip_rx.data.data_in_last <= '0'; |
ip_rx.hdr.is_valid <= '1'; |
ip_rx.hdr.protocol <= x"11"; -- UDP |
ip_rx.hdr.data_length <= x"000b"; |
ip_rx.hdr.src_ip_addr<= x"c0a80501"; |
wait for clk_period*3; |
-- now send the data |
ip_rx.data.data_in_valid <= '1'; |
ip_rx.data.data_in <= x"76"; wait for clk_period; -- src port |
ip_rx.data.data_in <= x"23"; wait for clk_period; |
ip_rx.data.data_in <= x"03"; wait for clk_period; -- dst port |
ip_rx.data.data_in <= x"65"; wait for clk_period; |
ip_rx.data.data_in <= x"00"; wait for clk_period; -- len (hdr + data) |
ip_rx.data.data_in <= x"0d"; wait for clk_period; |
ip_rx.data.data_in <= x"00"; wait for clk_period; -- mty cks |
ip_rx.data.data_in <= x"00"; wait for clk_period; |
-- udp hdr should be valid |
assert udp_rxo.hdr.is_valid = '1' report "T2: udp_rxo.hdr.is_valid not set"; |
|
ip_rx.data.data_in <= x"17"; wait for clk_period; -- data |
|
assert udp_rxo.hdr.src_ip_addr = x"c0a80501" report "T2: udp_rxo.hdr.src_ip_addr not set correctly"; |
assert udp_rxo.hdr.src_port = x"7623" report "T2: udp_rxo.hdr.src_port not set correctly"; |
assert udp_rxo.hdr.dst_port = x"0365" report "T2: udp_rxo.hdr.dst_port not set correctly"; |
assert udp_rxo.hdr.data_length = x"0005" report "T2: udp_rxo.hdr.data_length not set correctly"; |
assert udp_rx_start = '1' report "T2: udp_rx_start not set"; |
assert udp_rxo.data.data_in_valid = '1' report "T2: udp_rxo.data.data_in_valid not set"; |
|
ip_rx.data.data_in <= x"37"; wait for clk_period; -- data |
ip_rx.data.data_in <= x"57"; wait for clk_period; -- data |
ip_rx.data.data_in <= x"73"; wait for clk_period; -- data |
ip_rx.data.data_in <= x"f9"; ip_rx.data.data_in_last <= '1'; wait for clk_period; |
assert udp_rxo.data.data_in_last = '1' report "T2: udp_rxo.data.data_in_last not set"; |
ip_rx_start <= '0'; |
ip_rx.data.data_in_valid <= '0'; |
ip_rx.data.data_in_last <= '0'; |
ip_rx.hdr.is_valid <= '0'; |
wait for clk_period; |
assert udp_rxo.data.data_in = x"00" report "T2: udp_rxo.data.data_in not cleared"; |
assert udp_rxo.data.data_in_valid = '0' report "T2: udp_rxo.data.data_in_valid not cleared"; |
assert udp_rxo.data.data_in_last = '0' report "T2: udp_rxo.data.data_in_last not cleared"; |
|
------------ |
-- TEST 3 -- ability to reject non-udp protocols |
------------ |
|
report "T3: Send an ip frame with IP src ip_address c0a80501, protocol x12 from port x7623 to port x0365 and 5 bytes data"; |
|
ip_rx_start <= '1'; |
ip_rx.data.data_in_valid <= '0'; |
ip_rx.data.data_in_last <= '0'; |
ip_rx.hdr.is_valid <= '1'; |
ip_rx.hdr.protocol <= x"12"; -- non-UDP |
ip_rx.hdr.data_length <= x"000b"; |
ip_rx.hdr.src_ip_addr<= x"c0a80501"; |
wait for clk_period*3; |
-- now send the data |
ip_rx.data.data_in_valid <= '1'; |
ip_rx.data.data_in <= x"76"; wait for clk_period; -- src port |
ip_rx.data.data_in <= x"23"; wait for clk_period; |
ip_rx.data.data_in <= x"03"; wait for clk_period; -- dst port |
ip_rx.data.data_in <= x"65"; wait for clk_period; |
ip_rx.data.data_in <= x"00"; wait for clk_period; -- len (hdr + data) |
ip_rx.data.data_in <= x"0d"; wait for clk_period; |
ip_rx.data.data_in <= x"00"; wait for clk_period; -- mty cks |
ip_rx.data.data_in <= x"00"; wait for clk_period; |
-- udp hdr should be valid |
assert udp_rxo.hdr.is_valid = '0' report "T3: udp_rxo.hdr.is_valid incorrectly set"; |
|
ip_rx.data.data_in <= x"17"; wait for clk_period; -- data |
|
assert udp_rx_start = '0' report "T3: udp_rx_start incorrectly set"; |
assert udp_rxo.data.data_in_valid = '0' report "T3: udp_rxo.data.data_in_valid not set"; |
|
ip_rx.data.data_in <= x"37"; wait for clk_period; -- data |
ip_rx.data.data_in <= x"57"; wait for clk_period; -- data |
ip_rx.data.data_in <= x"73"; wait for clk_period; -- data |
ip_rx.data.data_in <= x"f9"; ip_rx.data.data_in_last <= '1'; wait for clk_period; |
assert udp_rxo.data.data_in_last = '0' report "T3: udp_rxo.data.data_in_last incorrectly set"; |
ip_rx_start <= '0'; |
ip_rx.data.data_in_valid <= '0'; |
ip_rx.data.data_in_last <= '0'; |
ip_rx.hdr.is_valid <= '0'; |
wait for clk_period; |
assert udp_rxo.data.data_in = x"00" report "T3: udp_rxo.data.data_in not cleared"; |
assert udp_rxo.data.data_in_valid = '0' report "T3: udp_rxo.data.data_in_valid not cleared"; |
assert udp_rxo.data.data_in_last = '0' report "T3: udp_rxo.data.data_in_last not cleared"; |
|
wait for clk_period; |
|
------------ |
-- TEST 4 -- Ability to receive UDP pkt after non-UDP pkt |
------------ |
|
report "T4: Send an ip frame with IP src ip_address c0a80501, udp protocol from port x1498 to port x8724 and 3 bytes data"; |
|
ip_rx_start <= '1'; |
ip_rx.data.data_in_valid <= '0'; |
ip_rx.data.data_in_last <= '0'; |
ip_rx.hdr.is_valid <= '1'; |
ip_rx.hdr.protocol <= x"11"; -- UDP |
ip_rx.hdr.data_length <= x"000b"; |
ip_rx.hdr.src_ip_addr<= x"c0a80501"; |
wait for clk_period*3; |
-- now send the data |
ip_rx.data.data_in_valid <= '1'; |
ip_rx.data.data_in <= x"14"; wait for clk_period; -- src port |
ip_rx.data.data_in <= x"98"; wait for clk_period; |
ip_rx.data.data_in <= x"87"; wait for clk_period; -- dst port |
ip_rx.data.data_in <= x"24"; wait for clk_period; |
ip_rx.data.data_in <= x"00"; wait for clk_period; -- len (hdr + data) |
ip_rx.data.data_in <= x"0b"; wait for clk_period; |
ip_rx.data.data_in <= x"00"; wait for clk_period; -- mty cks |
ip_rx.data.data_in <= x"00"; wait for clk_period; |
-- udp hdr should be valid |
assert udp_rxo.hdr.is_valid = '1' report "T4: udp_rxo.hdr.is_valid not set"; |
|
ip_rx.data.data_in <= x"41"; wait for clk_period; -- data |
|
assert udp_rxo.hdr.src_ip_addr = x"c0a80501" report "T4: udp_rxo.hdr.src_ip_addr not set correctly"; |
assert udp_rxo.hdr.src_port = x"1498" report "T4: udp_rxo.hdr.src_port not set correctly"; |
assert udp_rxo.hdr.dst_port = x"8724" report "T4: udp_rxo.hdr.dst_port not set correctly"; |
assert udp_rxo.hdr.data_length = x"0003" report "T4: udp_rxo.hdr.data_length not set correctly"; |
assert udp_rx_start = '1' report "T4: udp_rx_start not set"; |
assert udp_rxo.data.data_in_valid = '1' report "T4: udp_rxo.data.data_in_valid not set"; |
|
ip_rx.data.data_in <= x"45"; wait for clk_period; -- data |
ip_rx.data.data_in <= x"49"; ip_rx.data.data_in_last <= '1'; wait for clk_period; |
assert udp_rxo.data.data_in_last = '1' report "T4: udp_rxo.data.data_in_last not set"; |
ip_rx_start <= '0'; |
ip_rx.data.data_in_valid <= '0'; |
ip_rx.data.data_in_last <= '0'; |
ip_rx.hdr.is_valid <= '0'; |
wait for clk_period; |
assert udp_rxo.data.data_in = x"00" report "T4: udp_rxo.data.data_in not cleared"; |
assert udp_rxo.data.data_in_valid = '0' report "T4: udp_rxo.data.data_in_valid not cleared"; |
assert udp_rxo.data.data_in_last = '0' report "T4: udp_rxo.data.data_in_last not cleared"; |
|
wait for clk_period; |
|
report "--- end of tests ---"; |
|
wait; |
end process; |
|
END; |
/udp_ip_stack/tags/v1.3/bench/vhdl/UDP_TX_tb.vhd
0,0 → 1,219
-------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: |
-- |
-- Create Date: 18:43:49 06/10/2011 |
-- Design Name: |
-- Module Name: C:/Users/pjf/Documents/projects/fpga/xilinx/Network/ip1/UDP_TX_tb.vhd |
-- Project Name: ip1 |
-- Target Device: |
-- Tool versions: |
-- Description: |
-- |
-- VHDL Test Bench Created by ISE for module: UDP_TX |
-- |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Additional Comments: |
-- |
-- Notes: |
-- This testbench has been automatically generated using types std_logic and |
-- std_logic_vector for the ports of the unit under test. Xilinx recommends |
-- that these types always be used for the top-level I/O of a design in order |
-- to guarantee that the testbench will bind correctly to the post-implementation |
-- simulation model. |
-------------------------------------------------------------------------------- |
library IEEE; |
use IEEE.STD_LOGIC_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.axi.all; |
use work.ipv4_types.all; |
|
ENTITY UDP_TX_tb IS |
END UDP_TX_tb; |
|
ARCHITECTURE behavior OF UDP_TX_tb IS |
|
-- Component Declaration for the Unit Under Test (UUT) |
|
COMPONENT UDP_TX |
PORT( |
-- UDP Layer signals |
udp_tx_start : in std_logic; -- indicates req to tx UDP |
udp_txi : in udp_tx_type; -- UDP tx cxns |
udp_tx_result : out std_logic_vector (1 downto 0);-- tx status (changes during transmission) |
udp_tx_data_out_ready: out std_logic; -- indicates udp_tx is ready to take data |
-- system signals |
clk : in STD_LOGIC; -- same clock used to clock mac data and ip data |
reset : in STD_LOGIC; |
-- IP layer TX signals |
ip_tx_start : out std_logic; |
ip_tx : out ipv4_tx_type; -- IP tx cxns |
ip_tx_result : in std_logic_vector (1 downto 0); -- tx status (changes during transmission) |
ip_tx_data_out_ready : in std_logic -- indicates IP TX is ready to take data |
); |
END COMPONENT; |
|
|
--Inputs |
signal udp_tx_start : std_logic := '0'; |
signal clk : std_logic := '0'; |
signal reset : std_logic := '0'; |
signal udp_txi : udp_tx_type; |
signal ip_tx_result : std_logic_vector (1 downto 0); -- tx status (changes during transmission) |
signal ip_tx_data_out_ready : std_logic; -- indicates IP TX is ready to take data |
|
--Outputs |
signal ip_tx_start : std_logic := '0'; |
signal ip_tx : ipv4_tx_type; |
signal udp_tx_result : std_logic_vector (1 downto 0); |
signal udp_tx_data_out_ready : std_logic; |
|
-- Clock period definitions |
constant clk_period : time := 8 ns; |
|
BEGIN |
|
-- Instantiate the Unit Under Test (UUT) |
uut: UDP_TX PORT MAP ( |
udp_tx_start => udp_tx_start, |
udp_txi => udp_txi, |
udp_tx_result => udp_tx_result, |
udp_tx_data_out_ready => udp_tx_data_out_ready, |
clk => clk, |
reset => reset, |
ip_tx_start => ip_tx_start, |
ip_tx => ip_tx, |
ip_tx_result => ip_tx_result, |
ip_tx_data_out_ready => ip_tx_data_out_ready |
); |
|
|
-- Clock process definitions |
clk_process :process |
begin |
clk <= '0'; |
wait for clk_period/2; |
clk <= '1'; |
wait for clk_period/2; |
end process; |
|
|
-- Stimulus process |
stim_proc: process |
begin |
-- hold reset state for 100 ns. |
wait for 100 ns; |
|
udp_tx_start <= '0'; |
|
udp_txi.hdr.dst_ip_addr <= (others => '0'); |
udp_txi.hdr.dst_port <= (others => '0'); |
udp_txi.hdr.src_port <= (others => '0'); |
udp_txi.hdr.data_length <= (others => '0'); |
udp_txi.hdr.checksum <= (others => '0'); |
udp_txi.data.data_out_last <= '0'; |
|
reset <= '1'; |
wait for clk_period*10; |
reset <= '0'; |
wait for clk_period*5; |
|
-- check reset conditions |
|
assert ip_tx_start = '0' report "ip_tx_start not initialised correctly on reset"; |
assert ip_tx.data.data_out_valid = '0' report "ip_tx.data.data_out_valid not initialised correctly on reset"; |
assert ip_tx.data.data_out_last = '0' report "ip_tx.data.data_out_last not initialised correctly on reset"; |
assert udp_tx_result = UDPTX_RESULT_NONE report "udp_tx_result not initialised correctly on reset"; |
|
-- insert stimulus here |
|
wait for clk_period*5; |
|
------------ |
-- TEST 1 -- basic functional tx test |
------------ |
|
report "T1: basic functional tx test - send 56, 57, 58 to port 8532"; |
|
udp_txi.hdr.dst_ip_addr <= x"c0123478"; |
udp_txi.hdr.dst_port <= x"1467"; |
udp_txi.hdr.src_port <= x"8532"; |
udp_txi.hdr.data_length <= x"0003"; |
|
udp_tx_start <= '1'; |
ip_tx_data_out_ready <= '1'; -- IP layer can accept data |
wait for clk_period; |
udp_tx_start <= '0'; wait for clk_period; |
ip_tx_result <= IPTX_RESULT_NONE; |
|
assert udp_tx_result = UDPTX_RESULT_SENDING report "T1: result should be UDPTX_RESULT_SENDING"; |
|
wait until udp_tx_data_out_ready = '1'; |
|
-- start to tx IP data |
udp_txi.data.data_out_valid <= '1'; |
udp_txi.data.data_out <= x"56"; wait for clk_period; |
udp_txi.data.data_out <= x"57"; wait for clk_period; |
|
udp_txi.data.data_out <= x"58"; |
udp_txi.data.data_out_last <= '1'; |
wait for clk_period; |
|
assert ip_tx.data.data_out_last = '1' report "T1: ip_tx.datda_out_last not set on last byte"; |
|
udp_txi.data.data_out_valid <= '0'; |
udp_txi.data.data_out_last <= '0'; |
wait for clk_period*2; |
ip_tx_result <= IPTX_RESULT_SENT; |
|
assert udp_tx_result = UDPTX_RESULT_SENT report "T1: result should be UDPTX_RESULT_SENT"; |
wait for clk_period*2; |
|
------------ |
-- TEST 2 -- 2nd pkt |
------------ |
|
report "T2: send a second pkt - 56,57,58,59 to port 8532"; |
|
udp_txi.hdr.dst_ip_addr <= x"c0123475"; |
udp_txi.hdr.dst_port <= x"1467"; |
udp_txi.hdr.src_port <= x"8532"; |
udp_txi.hdr.data_length <= x"0005"; |
|
udp_tx_start <= '1'; |
ip_tx_data_out_ready <= '1'; -- IP layer can accept data |
wait for clk_period; |
udp_tx_start <= '0'; wait for clk_period; |
|
assert udp_tx_result = UDPTX_RESULT_SENDING report "T1: result should be UDPTX_RESULT_SENDING"; |
|
wait until udp_tx_data_out_ready = '1'; |
|
-- start to tx IP data |
udp_txi.data.data_out_valid <= '1'; |
udp_txi.data.data_out <= x"56"; wait for clk_period; |
udp_txi.data.data_out <= x"57"; wait for clk_period; |
udp_txi.data.data_out <= x"58"; wait for clk_period; |
udp_txi.data.data_out <= x"59"; wait for clk_period; |
|
udp_txi.data.data_out <= x"5a"; |
udp_txi.data.data_out_last <= '1'; |
wait for clk_period; |
assert ip_tx.data.data_out_last = '1' report "T1: ip_tx.datda_out_last not set on last byte"; |
|
udp_txi.data.data_out_valid <= '0'; |
udp_txi.data.data_out_last <= '0'; |
wait for clk_period*2; |
|
assert udp_tx_result = UDPTX_RESULT_SENT report "T1: result should be UDPTX_RESULT_SENT"; |
wait for clk_period*2; |
|
report "--- end of tests ---"; |
|
wait; |
end process; |
|
END; |
/udp_ip_stack/tags/v1.3/rtl/vhdl/arp.vhd
0,0 → 1,805
---------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: Peter Fall |
-- |
-- Create Date: 12:00:04 05/31/2011 |
-- Design Name: |
-- Module Name: arp - Behavioral |
-- Project Name: |
-- Target Devices: |
-- Tool versions: |
-- Description: |
-- handle simple IP lookup in cache |
-- request cache fill through ARP protocol if required |
-- cache is simple 1 deep |
-- Handle ARP protocol |
-- Respond to ARP requests and replies |
-- Ignore pkts that are not ARP |
-- Ignore pkts that are not addressed to us |
-- |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Revision 0.02 - Added req for mac tx and wait for grant |
-- Revision 0.03 - Added data_out_first |
-- Revision 0.04 - Added arp response timeout |
-- Revision 0.05 - Added arp cache reset control |
-- Additional Comments: |
-- |
---------------------------------------------------------------------------------- |
library IEEE; |
use IEEE.STD_LOGIC_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.arp_types.all; |
|
entity arp is |
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 |
arp_req_req : in arp_req_req_type; |
arp_req_rslt : out arp_req_rslt_type; |
-- MAC layer RX signals |
data_in_clk : in STD_LOGIC; |
reset : in STD_LOGIC; |
data_in : in STD_LOGIC_VECTOR (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame) |
data_in_valid : in STD_LOGIC; -- indicates data_in valid on clock |
data_in_last : in STD_LOGIC; -- indicates last data in frame |
-- MAC layer TX signals |
mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx) |
mac_tx_granted : in std_logic; -- indicates that access to channel has been granted |
data_out_clk : in std_logic; |
data_out_ready : in std_logic; -- indicates system ready to consume data |
data_out_valid : out std_logic; -- indicates data out is valid |
data_out_first : out std_logic; -- with data out valid indicates the first 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) |
-- system signals |
our_mac_address : in STD_LOGIC_VECTOR (47 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 |
); |
end arp; |
|
architecture Behavioral of arp is |
|
type req_state_type is (IDLE,LOOKUP,REQUEST,WAIT_REPLY,PAUSE1,PAUSE2,PAUSE3); |
type rx_state_type is (IDLE,PARSE,PROCESS_ARP,WAIT_END); |
type rx_event_type is (NO_EVENT,DATA); |
type count_mode_type is (RST,INCR,HOLD); |
type arp_oper_type is (NOP,REQUEST,REPLY); |
type set_clr_type is (SET, CLR, HOLD); |
|
type tx_state_type is (IDLE,WAIT_MAC,SEND); |
|
|
type arp_entry_type is record |
ip : std_logic_vector (31 downto 0); |
mac : std_logic_vector (47 downto 0); |
is_valid : std_logic; |
reply_required : std_logic; |
end record; |
|
-- state variables |
signal req_state : req_state_type; |
signal req_ip_addr : std_logic_vector (31 downto 0); -- IP address to lookup |
signal mac_addr_found : STD_LOGIC_VECTOR (47 downto 0); -- mac address found |
signal mac_addr_valid_reg: std_logic; |
signal send_request_needed : std_logic; |
signal tx_mac_chn_reqd : std_logic; |
signal freq_scaler : unsigned (31 downto 0); -- scales data_in_clk downto 1Hz |
signal timer : unsigned (7 downto 0); -- counts seconds timeout |
signal timeout_reg : std_logic; |
|
signal rx_state : rx_state_type; |
signal rx_count : unsigned (7 downto 0); |
signal arp_operation : arp_oper_type; |
signal arp_req_count : unsigned (7 downto 0); |
signal arp_entry : arp_entry_type; -- arp entry store |
signal new_arp_entry : arp_entry_type; |
signal tx_state : tx_state_type; |
signal tx_count : unsigned (7 downto 0); |
|
-- FIXME - remove these debug state signals |
signal arp_err_data : std_logic_vector (7 downto 0); |
signal set_err_data : std_logic; |
|
attribute keep : string; |
attribute keep of arp_err_data : signal is "true"; |
|
-- requester control signals |
signal next_req_state : req_state_type; |
signal set_req_state : std_logic; |
signal set_req_ip : std_logic; |
signal set_mac_addr : std_logic; |
signal set_mac_addr_invalid : std_logic; |
signal set_send_req : std_logic; |
signal clear_send_req : std_logic; |
signal set_timer : count_mode_type; -- timer reset, count, hold control |
signal timer_enable : std_logic; -- enable the timer counting |
signal set_timeout : set_clr_type; -- control the timeout register |
|
|
-- rx control signals |
signal next_rx_state : rx_state_type; |
signal set_rx_state : std_logic; |
signal rx_event : rx_event_type; |
signal rx_count_mode : count_mode_type; |
signal set_arp_oper : std_logic; |
signal arp_oper_set_val : arp_oper_type; |
signal dataval : std_logic_vector (7 downto 0); |
signal set_arp_entry_request : std_logic; |
|
signal set_mac5 : std_logic; |
signal set_mac4 : std_logic; |
signal set_mac3 : std_logic; |
signal set_mac2 : std_logic; |
signal set_mac1 : std_logic; |
signal set_mac0 : std_logic; |
|
signal set_ip3 : std_logic; |
signal set_ip2 : std_logic; |
signal set_ip1 : std_logic; |
signal set_ip0 : std_logic; |
|
-- tx control signals |
signal next_tx_state : tx_state_type; |
signal set_tx_state : std_logic; |
signal tx_count_mode : count_mode_type; |
signal clear_reply_req : std_logic; |
signal set_chn_reqd : set_clr_type; |
signal kill_data_out_valid : std_logic; |
|
|
-- function to determine whether the rx pkt is an arp pkt and whether we want to process it |
-- Returns 1 if we should discard |
-- The following will make us ignore the frame (all values hexadecimal): |
-- PDU type /= 0806 |
-- Protocol Type /= 0800 |
-- Hardware Type /= 1 |
-- Hardware Length /= 6 |
-- Protocol Length /= 4 |
-- Operation /= 1 or 2 |
-- Target IP /= our IP (i.er. message is not meant for us) |
-- |
function not_our_arp(data : STD_LOGIC_VECTOR; count : unsigned; our_ip : std_logic_vector) return std_logic is |
begin |
if |
(count = 12 and data /= x"08") or -- PDU type 0806 : ARP |
(count = 13 and data /= x"06") or |
(count = 14 and data /= x"00") or -- HW type 1 : eth |
(count = 15 and data /= x"01") or |
(count = 16 and data /= x"08") or -- Protocol 0800 : IP |
(count = 17 and data /= x"00") or |
(count = 18 and data /= x"06") or -- HW Length 6 |
(count = 19 and data /= x"04") or -- protocol length 4 |
(count = 20 and data /= x"00") or -- operation 1 or 2 (req or reply) |
(count = 21 and data /= x"01" and data /= x"02") or |
(count = 38 and data /= our_ip(31 downto 24)) or -- target IP is ours |
(count = 39 and data /= our_ip(23 downto 16)) or |
(count = 40 and data /= our_ip(15 downto 8)) or |
(count = 41 and data /= our_ip(7 downto 0)) |
then |
return '1'; |
else |
return '0'; |
end if; |
end function not_our_arp; |
|
begin |
req_combinatorial : process ( |
-- input signals |
arp_req_req, |
-- state variables |
req_state, req_ip_addr, mac_addr_found, mac_addr_valid_reg, send_request_needed, arp_entry, |
freq_scaler, timer, timeout_reg, |
-- control signals |
next_req_state, set_req_state, set_req_ip, set_mac_addr, control, |
set_mac_addr_invalid,set_send_req, clear_send_req, set_timer, timer_enable, set_timeout |
) |
begin |
-- set output followers |
if arp_req_req.lookup_req = '1' then |
arp_req_rslt.got_err <= '0'; |
else |
arp_req_rslt.got_err <= timeout_reg; |
end if; |
-- zero time response to lookup request if already in cache |
if arp_req_req.lookup_req = '1' and arp_req_req.ip = arp_entry.ip and arp_entry.is_valid = '1' then |
arp_req_rslt.got_mac <= '1'; |
arp_req_rslt.mac <= arp_entry.mac; |
elsif arp_req_req.lookup_req = '1' then |
arp_req_rslt.got_mac <= '0'; -- hold off got_mac while req is there as arp_entry will not be correct yet |
arp_req_rslt.mac <= arp_entry.mac; |
else |
arp_req_rslt.got_mac <= mac_addr_valid_reg; |
arp_req_rslt.mac <= mac_addr_found; |
end if; |
|
-- set signal defaults |
next_req_state <= IDLE; |
set_req_state <= '0'; |
set_req_ip <= '0'; |
set_mac_addr <= '0'; |
set_mac_addr_invalid <= '0'; |
set_send_req <= '0'; |
clear_send_req <= '0'; |
set_timer <= INCR; -- default is timer running, unless we hold or reset it |
set_timeout <= HOLD; |
timer_enable <= '0'; |
|
-- combinatorial logic |
if freq_scaler = x"00000000" then |
timer_enable <= '1'; |
end if; |
|
-- REQ FSM |
case req_state is |
when IDLE => |
set_timer <= RST; |
if arp_req_req.lookup_req = '1' then |
-- check if we already have the info in cache |
if arp_req_req.ip = arp_entry.ip and arp_entry.is_valid = '1' then |
-- already have this IP |
set_mac_addr <= '1'; |
else |
set_timeout <= CLR; |
next_req_state <= LOOKUP; |
set_req_state <= '1'; |
set_req_ip <= '1'; |
set_mac_addr_invalid <= '1'; |
end if; |
end if; |
|
when LOOKUP => |
if arp_entry.ip = req_ip_addr and arp_entry.is_valid = '1' then |
-- already have this IP |
next_req_state <= IDLE; |
set_req_state <= '1'; |
set_mac_addr <= '1'; |
else |
-- need to request mac for this IP |
set_send_req <= '1'; |
set_timer <= RST; |
next_req_state <= REQUEST; |
set_req_state <= '1'; |
end if; |
|
when REQUEST => |
clear_send_req <= '1'; |
next_req_state <= WAIT_REPLY; |
set_req_state <= '1'; |
|
when WAIT_REPLY => |
if arp_entry.is_valid = '1' then |
-- have reply, go back to LOOKUP state to see if it is the right one |
next_req_state <= LOOKUP; |
set_req_state <= '1'; |
end if; |
if timer >= ARP_TIMEOUT then |
set_timeout <= SET; |
next_req_state <= PAUSE1; |
set_req_state <= '1'; |
end if; |
|
when PAUSE1 => |
next_req_state <= PAUSE2; |
set_req_state <= '1'; |
|
when PAUSE2 => |
next_req_state <= PAUSE3; |
set_req_state <= '1'; |
|
when PAUSE3 => |
next_req_state <= IDLE; |
set_req_state <= '1'; |
|
end case; |
end process; |
|
req_sequential : process (data_in_clk,reset) |
begin |
if rising_edge(data_in_clk) then |
if reset = '1' then |
-- reset state variables |
req_state <= IDLE; |
req_ip_addr <= (others => '0'); |
mac_addr_found <= (others => '0'); |
mac_addr_valid_reg <= '0'; |
send_request_needed <= '0'; |
freq_scaler <= to_unsigned(CLOCK_FREQ,32); |
timer <= (others => '0'); |
timeout_reg <= '0'; |
else |
-- Next req_state processing |
if set_req_state = '1' then |
req_state <= next_req_state; |
else |
req_state <= req_state; |
end if; |
|
-- Latch the requested IP address |
if set_req_ip = '1' then |
req_ip_addr <= arp_req_req.ip; |
else |
req_ip_addr <= req_ip_addr; |
end if; |
|
-- send request to TX&RX FSMs to send an ARP request |
if set_send_req = '1' then |
send_request_needed <= '1'; |
elsif clear_send_req = '1' then |
send_request_needed <= '0'; |
else |
send_request_needed <= send_request_needed; |
end if; |
|
-- Set the found mac address |
if set_mac_addr = '1' then |
mac_addr_found <= arp_entry.mac; |
mac_addr_valid_reg <= '1'; |
elsif set_mac_addr_invalid = '1' then |
mac_addr_found <= (others => '0'); |
mac_addr_valid_reg <= '0'; |
else |
mac_addr_found <= mac_addr_found; |
mac_addr_valid_reg <= mac_addr_valid_reg; |
end if; |
|
-- freq scaling and 1-sec timer |
if freq_scaler = x"00000000" then |
freq_scaler <= to_unsigned(CLOCK_FREQ,32); |
else |
freq_scaler <= freq_scaler - 1; |
end if; |
|
-- timer processing |
case set_timer is |
when RST => |
timer <= x"00"; |
when INCR => |
if timer_enable = '1' then |
timer <= timer + 1; |
else |
timer <= timer; |
end if; |
when HOLD => |
timer <= timer; |
end case; |
|
-- timeout latching |
case set_timeout is |
when CLR => timeout_reg <= '0'; |
when SET => timeout_reg <= '1'; |
when HOLD => timeout_reg <= timeout_reg; |
end case; |
|
end if; |
end if; |
end process; |
|
|
rx_combinatorial : process ( |
-- input signals |
data_in, data_in_valid, data_in_last, our_ip_address, |
-- state variables |
rx_state, rx_count, arp_operation, arp_req_count, arp_err_data, |
-- control signals |
next_rx_state, set_rx_state, rx_event, rx_count_mode, set_arp_oper, arp_oper_set_val, |
dataval,set_mac5,set_mac4,set_mac3,set_mac2,set_mac1,set_mac0,set_ip3,set_ip2,set_ip1,set_ip0, set_err_data, |
set_arp_entry_request) |
begin |
-- set output followers |
req_count <= STD_LOGIC_VECTOR(arp_req_count); |
|
-- set signal defaults |
next_rx_state <= IDLE; |
set_rx_state <= '0'; |
rx_event <= NO_EVENT; |
rx_count_mode <= HOLD; |
set_arp_oper <= '0'; |
arp_oper_set_val <= NOP; |
dataval <= (others => '0'); |
set_mac5 <= '0'; |
set_mac4 <= '0'; |
set_mac3 <= '0'; |
set_mac2 <= '0'; |
set_mac1 <= '0'; |
set_mac0 <= '0'; |
set_ip3 <= '0'; |
set_ip2 <= '0'; |
set_ip1 <= '0'; |
set_ip0 <= '0'; |
set_arp_entry_request <= '0'; |
set_err_data <= '0'; |
|
-- determine event (if any) |
if data_in_valid = '1' then |
rx_event <= DATA; |
end if; |
|
-- RX FSM |
case rx_state is |
when IDLE => |
rx_count_mode <= RST; |
case rx_event is |
when NO_EVENT => -- (nothing to do) |
when DATA => |
next_rx_state <= PARSE; |
set_rx_state <= '1'; |
rx_count_mode <= INCR; |
end case; |
|
when PARSE => |
case rx_event is |
when NO_EVENT => -- (nothing to do) |
when DATA => |
rx_count_mode <= INCR; |
-- handle early frame termination |
if data_in_last = '1' then |
next_rx_state <= IDLE; |
set_rx_state <= '1'; |
else |
-- check for end of frame. Also, detect and discard if not our frame |
if rx_count = 42 then |
next_rx_state <= PROCESS_ARP; |
set_rx_state <= '1'; |
elsif not_our_arp(data_in,rx_count,our_ip_address) = '1' then |
dataval <= data_in; |
set_err_data <= '1'; |
next_rx_state <= WAIT_END; |
set_rx_state <= '1'; |
elsif rx_count = 21 then |
-- capture ARP operation |
case data_in is |
when x"01" => |
arp_oper_set_val <= REQUEST; |
set_arp_oper <= '1'; |
when x"02" => |
arp_oper_set_val <= REPLY; |
set_arp_oper <= '1'; |
when others => -- ignore other values |
end case; |
-- capture source mac addr |
elsif rx_count = 22 then |
set_mac5 <= '1'; |
dataval <= data_in; |
elsif rx_count = 23 then |
set_mac4 <= '1'; |
dataval <= data_in; |
elsif rx_count = 24 then |
set_mac3 <= '1'; |
dataval <= data_in; |
elsif rx_count = 25 then |
set_mac2 <= '1'; |
dataval <= data_in; |
elsif rx_count = 26 then |
set_mac1 <= '1'; |
dataval <= data_in; |
elsif rx_count = 27 then |
set_mac0 <= '1'; |
dataval <= data_in; |
-- capture source ip addr |
elsif rx_count = 28 then |
set_ip3 <= '1'; |
dataval <= data_in; |
elsif rx_count = 29 then |
set_ip2 <= '1'; |
dataval <= data_in; |
elsif rx_count = 30 then |
set_ip1 <= '1'; |
dataval <= data_in; |
elsif rx_count = 31 then |
set_ip0 <= '1'; |
dataval <= data_in; |
end if; |
end if; |
end case; |
|
when PROCESS_ARP => |
next_rx_state <= WAIT_END; |
set_rx_state <= '1'; |
case arp_operation is |
when NOP => -- (nothing to do) |
when REQUEST => |
set_arp_entry_request <= '1'; |
arp_oper_set_val <= NOP; |
set_arp_oper <= '1'; |
when REPLY => |
set_arp_entry_request <= '1'; |
arp_oper_set_val <= NOP; |
set_arp_oper <= '1'; |
end case; |
|
when WAIT_END => |
case rx_event is |
when NO_EVENT => -- (nothing to do) |
when DATA => |
if data_in_last = '1' then |
next_rx_state <= IDLE; |
set_rx_state <= '1'; |
end if; |
end case; |
|
end case; |
|
end process; |
|
rx_sequential : process (data_in_clk) |
begin |
if rising_edge(data_in_clk) then |
if reset = '1' then |
-- reset state variables |
rx_state <= IDLE; |
rx_count <= x"00"; |
arp_operation <= NOP; |
arp_req_count <= x"00"; |
-- reset arp entry store |
arp_entry.ip <= x"00000000"; |
arp_entry.mac <= x"000000000000"; |
arp_entry.is_valid <= '0'; |
arp_entry.reply_required <= '0'; |
arp_err_data <= (others => '0'); |
else |
-- Next rx_state processing |
if set_rx_state = '1' then |
rx_state <= next_rx_state; |
else |
rx_state <= rx_state; |
end if; |
|
-- rx_count processing |
case rx_count_mode is |
when RST => |
rx_count <= x"00"; |
when INCR => |
rx_count <= rx_count + 1; |
when HOLD => |
rx_count <= rx_count; |
end case; |
|
-- err data |
if set_err_data = '1' then |
arp_err_data <= data_in; |
else |
arp_err_data <= arp_err_data; |
end if; |
|
-- arp operation processing |
if set_arp_oper = '1' then |
arp_operation <= arp_oper_set_val; |
else |
arp_operation <= arp_operation; |
end if; |
|
-- source mac capture |
if (set_mac5 = '1') then new_arp_entry.mac(47 downto 40) <= dataval; end if; |
if (set_mac4 = '1') then new_arp_entry.mac(39 downto 32) <= dataval; end if; |
if (set_mac3 = '1') then new_arp_entry.mac(31 downto 24) <= dataval; end if; |
if (set_mac2 = '1') then new_arp_entry.mac(23 downto 16) <= dataval; end if; |
if (set_mac1 = '1') then new_arp_entry.mac(15 downto 8) <= dataval; end if; |
if (set_mac0 = '1') then new_arp_entry.mac(7 downto 0) <= dataval; end if; |
|
-- source ip capture |
if (set_ip3 = '1') then new_arp_entry.ip(31 downto 24) <= dataval; end if; |
if (set_ip2 = '1') then new_arp_entry.ip(23 downto 16) <= dataval; end if; |
if (set_ip1 = '1') then new_arp_entry.ip(15 downto 8) <= dataval; end if; |
if (set_ip0 = '1') then new_arp_entry.ip(7 downto 0) <= dataval; end if; |
|
-- set arp entry request |
if control.clear_cache = '1' then |
arp_entry.ip <= x"00000000"; |
arp_entry.mac <= x"000000000000"; |
arp_entry.is_valid <= '0'; |
arp_entry.reply_required <= '0'; |
elsif set_arp_entry_request = '1' then |
-- copy info from new entry to arp_entry and set reply required |
arp_entry.mac <= new_arp_entry.mac; |
arp_entry.ip <= new_arp_entry.ip; |
arp_entry.is_valid <= '1'; |
if arp_operation = REQUEST then |
arp_entry.reply_required <= '1'; |
else |
arp_entry.reply_required <= '0'; |
end if; |
-- count another ARP pkt received |
arp_req_count <= arp_req_count + 1; |
elsif clear_reply_req = '1' then |
-- note: clear_reply_req is set by tx logic, but handled in the clk domain of the rx |
-- maintain arp entry state, but reset the reply required flag |
arp_entry.mac <= arp_entry.mac; |
arp_entry.ip <= arp_entry.ip; |
arp_entry.is_valid <= arp_entry.is_valid; |
arp_entry.reply_required <= '0'; |
arp_req_count <= arp_req_count; |
elsif send_request_needed = '1' then |
-- set up the arp entry to take the request to be transmitted out by the TX FSM |
arp_entry.ip <= req_ip_addr; |
arp_entry.mac <= (others => '0'); |
arp_entry.is_valid <= '0'; |
arp_entry.reply_required <= '0'; |
else |
arp_entry <= arp_entry; |
arp_req_count <= arp_req_count; |
end if; |
|
end if; |
end if; |
end process; |
|
tx_combinatorial : process ( |
-- input signals |
data_out_ready, send_request_needed, mac_tx_granted, our_mac_address, our_ip_address, |
-- state variables |
tx_state, tx_count, tx_mac_chn_reqd, arp_entry, |
-- control signals |
next_rx_state, set_rx_state, tx_count_mode, kill_data_out_valid, |
set_chn_reqd, clear_reply_req) |
begin |
-- set output followers |
mac_tx_req <= tx_mac_chn_reqd; |
|
-- set initial values for combinatorial outputs |
data_out_first <= '0'; |
|
case tx_state is |
when SEND => |
if data_out_ready = '1' and kill_data_out_valid = '0' then |
data_out_valid <= '1'; |
else |
data_out_valid <= '0'; |
end if; |
when OTHERS => data_out_valid <= '0'; |
end case; |
|
-- set signal defaults |
next_tx_state <= IDLE; |
set_tx_state <= '0'; |
tx_count_mode <= HOLD; |
data_out <= x"00"; |
data_out_last <= '0'; |
clear_reply_req <= '0'; |
set_chn_reqd <= HOLD; |
kill_data_out_valid <= '0'; |
|
-- TX FSM |
case tx_state is |
when IDLE => |
tx_count_mode <= RST; |
if arp_entry.reply_required = '1' then |
set_chn_reqd <= SET; |
next_tx_state <= WAIT_MAC; |
set_tx_state <= '1'; |
elsif send_request_needed = '1' then |
set_chn_reqd <= SET; |
next_tx_state <= WAIT_MAC; |
set_tx_state <= '1'; |
else |
set_chn_reqd <= CLR; |
end if; |
|
when WAIT_MAC => |
tx_count_mode <= RST; |
if mac_tx_granted = '1' then |
next_tx_state <= SEND; |
set_tx_state <= '1'; |
end if; |
-- TODO - should handle timeout here |
|
when SEND => |
if data_out_ready = '1' then |
tx_count_mode <= INCR; |
end if; |
case tx_count is |
when x"00" => |
data_out_first <= data_out_ready; |
data_out <= x"ff"; -- dst = broadcast |
|
when x"01" => data_out <= x"ff"; |
when x"02" => data_out <= x"ff"; |
when x"03" => data_out <= x"ff"; |
when x"04" => data_out <= x"ff"; |
when x"05" => data_out <= x"ff"; |
when x"06" => data_out <= our_mac_address (47 downto 40); -- src = our mac |
when x"07" => data_out <= our_mac_address (39 downto 32); |
when x"08" => data_out <= our_mac_address (31 downto 24); |
when x"09" => data_out <= our_mac_address (23 downto 16); |
when x"0a" => data_out <= our_mac_address (15 downto 8); |
when x"0b" => data_out <= our_mac_address (7 downto 0); |
when x"0c" => data_out <= x"08"; -- pkt type = 0806 : ARP |
when x"0d" => data_out <= x"06"; |
when x"0e" => data_out <= x"00"; -- HW type = 0001 : eth |
when x"0f" => data_out <= x"01"; |
when x"10" => data_out <= x"08"; -- protocol = 0800 : ip |
when x"11" => data_out <= x"00"; |
when x"12" => data_out <= x"06"; -- HW size = 06 |
when x"13" => data_out <= x"04"; -- prot size = 04 |
|
when x"14" => data_out <= x"00"; -- opcode = |
when x"15" => |
if arp_entry.is_valid = '1' then |
data_out <= x"02"; -- 02 : REPLY if arp_entry valid |
else |
data_out <= x"01"; -- 01 : REQ if arp_entry invalid |
end if; |
|
when x"16" => data_out <= our_mac_address (47 downto 40); -- sender mac |
when x"17" => data_out <= our_mac_address (39 downto 32); |
when x"18" => data_out <= our_mac_address (31 downto 24); |
when x"19" => data_out <= our_mac_address (23 downto 16); |
when x"1a" => data_out <= our_mac_address (15 downto 8); |
when x"1b" => data_out <= our_mac_address (7 downto 0); |
when x"1c" => data_out <= our_ip_address (31 downto 24); -- sender ip |
when x"1d" => data_out <= our_ip_address (23 downto 16); |
when x"1e" => data_out <= our_ip_address (15 downto 8); |
when x"1f" => data_out <= our_ip_address (7 downto 0); |
when x"20" => data_out <= arp_entry.mac (47 downto 40); -- target mac |
when x"21" => data_out <= arp_entry.mac (39 downto 32); |
when x"22" => data_out <= arp_entry.mac (31 downto 24); |
when x"23" => data_out <= arp_entry.mac (23 downto 16); |
when x"24" => data_out <= arp_entry.mac (15 downto 8); |
when x"25" => data_out <= arp_entry.mac (7 downto 0); |
when x"26" => data_out <= arp_entry.ip (31 downto 24); -- target ip |
when x"27" => data_out <= arp_entry.ip (23 downto 16); |
when x"28" => data_out <= arp_entry.ip (15 downto 8); |
|
when x"29" => |
data_out <= arp_entry.ip(7 downto 0); |
data_out_last <= '1'; |
|
when x"2a" => |
clear_reply_req <= '1'; -- reset the reply request (done in the rx clk process domain) |
kill_data_out_valid <= '1'; -- data is no longer valid |
next_tx_state <= IDLE; |
set_tx_state <= '1'; |
|
when others => |
next_tx_state <= IDLE; |
set_tx_state <= '1'; |
end case; |
end case; |
end process; |
|
tx_sequential : process (data_out_clk,reset) |
begin |
if rising_edge(data_out_clk) then |
if reset = '1' then |
-- reset state variables |
tx_state <= IDLE; |
tx_mac_chn_reqd <= '0'; |
else |
-- Next rx_state processing |
if set_tx_state = '1' then |
tx_state <= next_tx_state; |
else |
tx_state <= tx_state; |
end if; |
|
-- tx_count processing |
case tx_count_mode is |
when RST => |
tx_count <= x"00"; |
when INCR => |
tx_count <= tx_count + 1; |
when HOLD => |
tx_count <= tx_count; |
end case; |
|
-- control access request to mac tx chn |
case set_chn_reqd is |
when SET => tx_mac_chn_reqd <= '1'; |
when CLR => tx_mac_chn_reqd <= '0'; |
when HOLD => tx_mac_chn_reqd <= tx_mac_chn_reqd; |
end case; |
|
end if; |
end if; |
end process; |
|
|
end Behavioral; |
|
/udp_ip_stack/tags/v1.3/rtl/vhdl/UDP_TX.vhd
0,0 → 1,290
---------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: Peter Fall |
-- |
-- Create Date: 5 June 2011 |
-- Design Name: |
-- Module Name: UDP_TX - Behavioral |
-- Project Name: |
-- Target Devices: |
-- Tool versions: |
-- Description: |
-- handle simple UDP TX |
-- doesnt generate the checksum(supposedly optional) |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Additional Comments: |
-- |
---------------------------------------------------------------------------------- |
library IEEE; |
use IEEE.STD_LOGIC_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.axi.all; |
use work.ipv4_types.all; |
|
entity UDP_TX is |
Port ( |
-- UDP Layer signals |
udp_tx_start : in std_logic; -- indicates req to tx UDP |
udp_txi : in udp_tx_type; -- UDP tx cxns |
udp_tx_result : out std_logic_vector (1 downto 0);-- tx status (changes during transmission) |
udp_tx_data_out_ready: out std_logic; -- indicates udp_tx is ready to take data |
-- system signals |
clk : in STD_LOGIC; -- same clock used to clock mac data and ip data |
reset : in STD_LOGIC; |
-- IP layer TX signals |
ip_tx_start : out std_logic; |
ip_tx : out ipv4_tx_type; -- IP tx cxns |
ip_tx_result : in std_logic_vector (1 downto 0); -- tx status (changes during transmission) |
ip_tx_data_out_ready : in std_logic -- indicates IP TX is ready to take data |
); |
end UDP_TX; |
|
architecture Behavioral of UDP_TX is |
type tx_state_type is (IDLE, PAUSE, SEND_UDP_HDR, SEND_USER_DATA); |
|
type count_mode_type is (RST, INCR, HOLD); |
type settable_cnt_type is (RST, SET, INCR, HOLD); |
type set_clr_type is (SET, CLR, HOLD); |
|
-- TX state variables |
signal udp_tx_state : tx_state_type; |
signal tx_count : unsigned (15 downto 0); |
signal tx_result_reg : std_logic_vector (1 downto 0); |
signal ip_tx_start_reg : std_logic; |
signal data_out_ready_reg : std_logic; |
|
-- tx control signals |
signal next_tx_state : tx_state_type; |
signal set_tx_state : std_logic; |
signal next_tx_result : std_logic_vector (1 downto 0); |
signal set_tx_result : std_logic; |
signal tx_count_val : unsigned (15 downto 0); |
signal tx_count_mode : settable_cnt_type; |
signal tx_data : std_logic_vector (7 downto 0); |
signal set_last : std_logic; |
signal set_ip_tx_start : set_clr_type; |
signal tx_data_valid : std_logic; -- indicates whether data is valid to tx or not |
|
-- tx temp signals |
signal total_length : std_logic_vector (15 downto 0); -- computed combinatorially from header size |
|
|
-- IP datagram header format |
-- |
-- 0 4 8 16 19 24 31 |
-- -------------------------------------------------------------------------------------------- |
-- | source port number | dest port number | |
-- | | | |
-- -------------------------------------------------------------------------------------------- |
-- | length (bytes) | checksum | |
-- | (header and data combined) | | |
-- -------------------------------------------------------------------------------------------- |
-- | Data | |
-- | | |
-- -------------------------------------------------------------------------------------------- |
-- | .... | |
-- | | |
-- -------------------------------------------------------------------------------------------- |
|
begin |
----------------------------------------------------------------------- |
-- combinatorial process to implement FSM and determine control signals |
----------------------------------------------------------------------- |
|
tx_combinatorial : process( |
-- input signals |
udp_tx_start, udp_txi, clk, ip_tx_result, ip_tx_data_out_ready, |
-- state variables |
udp_tx_state, tx_count, tx_result_reg, ip_tx_start_reg, data_out_ready_reg, |
-- control signals |
next_tx_state, set_tx_state, next_tx_result, set_tx_result, tx_count_mode, tx_count_val, |
tx_data, set_last, total_length, set_ip_tx_start, tx_data_valid |
) |
|
begin |
-- set output followers |
ip_tx_start <= ip_tx_start_reg; |
ip_tx.hdr.protocol <= x"11"; -- UDP protocol |
ip_tx.hdr.data_length <= total_length; |
ip_tx.hdr.dst_ip_addr <= udp_txi.hdr.dst_ip_addr; |
if udp_tx_start = '1' and ip_tx_start_reg = '0' then |
udp_tx_result <= UDPTX_RESULT_NONE; -- kill the result until have started the IP layer |
else |
udp_tx_result <= tx_result_reg; |
end if; |
|
case udp_tx_state is |
when SEND_USER_DATA => |
ip_tx.data.data_out <= udp_txi.data.data_out; |
tx_data_valid <= udp_txi.data.data_out_valid; |
ip_tx.data.data_out_last <= udp_txi.data.data_out_last; |
|
when SEND_UDP_HDR => |
ip_tx.data.data_out <= tx_data; |
tx_data_valid <= ip_tx_data_out_ready; |
ip_tx.data.data_out_last <= set_last; |
|
when others => |
ip_tx.data.data_out <= (others => '0'); |
tx_data_valid <= '0'; |
ip_tx.data.data_out_last <= set_last; |
end case; |
|
ip_tx.data.data_out_valid <= tx_data_valid and ip_tx_data_out_ready; |
|
-- set signal defaults |
next_tx_state <= IDLE; |
set_tx_state <= '0'; |
tx_count_mode <= HOLD; |
tx_data <= x"00"; |
set_last <= '0'; |
next_tx_result <= UDPTX_RESULT_NONE; |
set_tx_result <= '0'; |
set_ip_tx_start <= HOLD; |
tx_count_val <= (others => '0'); |
udp_tx_data_out_ready <= '0'; |
|
-- set temp signals |
total_length <= std_logic_vector(unsigned(udp_txi.hdr.data_length) + 8); -- total length = user data length + header length (bytes) |
|
-- TX FSM |
case udp_tx_state is |
when IDLE => |
udp_tx_data_out_ready <= '0'; -- in this state, we are unable to accept user data for tx |
tx_count_mode <= RST; |
if udp_tx_start = '1' then |
-- check header count for error if too high |
if unsigned(udp_txi.hdr.data_length) > 1472 then |
next_tx_result <= UDPTX_RESULT_ERR; |
set_tx_result <= '1'; |
else |
-- start to send UDP header |
tx_count_mode <= RST; |
next_tx_result <= UDPTX_RESULT_SENDING; |
set_ip_tx_start <= SET; |
set_tx_result <= '1'; |
next_tx_state <= PAUSE; |
set_tx_state <= '1'; |
end if; |
end if; |
|
when PAUSE => |
-- delay one clock for IP layer to respond to ip_tx_start and remove any tx error result |
next_tx_state <= SEND_UDP_HDR; |
set_tx_state <= '1'; |
|
when SEND_UDP_HDR => |
udp_tx_data_out_ready <= '0'; -- in this state, we are unable to accept user data for tx |
if ip_tx_result = IPTX_RESULT_ERR then |
set_ip_tx_start <= CLR; |
next_tx_result <= UDPTX_RESULT_ERR; |
set_tx_result <= '1'; |
next_tx_state <= IDLE; |
set_tx_state <= '1'; |
elsif ip_tx_data_out_ready = '1' then |
if tx_count = x"0007" then |
tx_count_val <= x"0001"; |
tx_count_mode <= SET; |
next_tx_state <= SEND_USER_DATA; |
set_tx_state <= '1'; |
else |
tx_count_mode <= INCR; |
end if; |
case tx_count is |
when x"0000" => tx_data <= udp_txi.hdr.src_port (15 downto 8); -- src port |
when x"0001" => tx_data <= udp_txi.hdr.src_port (7 downto 0); |
when x"0002" => tx_data <= udp_txi.hdr.dst_port (15 downto 8); -- dst port |
when x"0003" => tx_data <= udp_txi.hdr.dst_port (7 downto 0); |
when x"0004" => tx_data <= total_length (15 downto 8); -- length |
when x"0005" => tx_data <= total_length (7 downto 0); |
when x"0006" => tx_data <= udp_txi.hdr.checksum (15 downto 8); -- checksum (set by upstream) |
when x"0007" => tx_data <= udp_txi.hdr.checksum (7 downto 0); |
when others => |
-- shouldnt get here - handle as error |
next_tx_result <= IPTX_RESULT_ERR; |
set_tx_result <= '1'; |
end case; |
end if; |
|
when SEND_USER_DATA => |
udp_tx_data_out_ready <= '1'; -- in this state, we are always ready to accept user data for tx |
if ip_tx_data_out_ready = '1' then |
if udp_txi.data.data_out_valid = '1' or tx_count = x"000" then |
-- only increment if ready and valid has been subsequently established, otherwise data count moves on too fast |
if unsigned(tx_count) = unsigned(udp_txi.hdr.data_length) then |
set_last <= '1'; |
tx_data <= udp_txi.data.data_out; |
next_tx_result <= UDPTX_RESULT_SENT; |
set_ip_tx_start <= CLR; |
set_tx_result <= '1'; |
next_tx_state <= IDLE; |
set_tx_state <= '1'; |
else |
tx_count_mode <= INCR; |
tx_data <= udp_txi.data.data_out; |
end if; |
end if; |
end if; |
|
end case; |
end process; |
|
----------------------------------------------------------------------------- |
-- sequential process to action control signals and change states and outputs |
----------------------------------------------------------------------------- |
|
tx_sequential : process (clk,reset,data_out_ready_reg) |
begin |
if rising_edge(clk) then |
data_out_ready_reg <= ip_tx_data_out_ready; |
else |
data_out_ready_reg <= data_out_ready_reg; |
end if; |
|
if rising_edge(clk) then |
if reset = '1' then |
-- reset state variables |
udp_tx_state <= IDLE; |
tx_count <= x"0000"; |
tx_result_reg <= IPTX_RESULT_NONE; |
ip_tx_start_reg <= '0'; |
else |
-- Next udp_tx_state processing |
if set_tx_state = '1' then |
udp_tx_state <= next_tx_state; |
else |
udp_tx_state <= udp_tx_state; |
end if; |
|
-- ip_tx_start_reg processing |
case set_ip_tx_start is |
when SET => ip_tx_start_reg <= '1'; |
when CLR => ip_tx_start_reg <= '0'; |
when HOLD => ip_tx_start_reg <= ip_tx_start_reg; |
end case; |
|
-- tx result processing |
if set_tx_result = '1' then |
tx_result_reg <= next_tx_result; |
else |
tx_result_reg <= tx_result_reg; |
end if; |
|
-- tx_count processing |
case tx_count_mode is |
when RST => tx_count <= x"0000"; |
when SET => tx_count <= tx_count_val; |
when INCR => tx_count <= tx_count + 1; |
when HOLD => tx_count <= tx_count; |
end case; |
|
end if; |
end if; |
end process; |
|
|
end Behavioral; |
|
/udp_ip_stack/tags/v1.3/rtl/vhdl/ml605/IP_complete.vhd
0,0 → 1,266
---------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: Peter Fall |
-- |
-- Create Date: 20:25:56 06/03/2011 |
-- Design Name: |
-- Module Name: IP_complete - Behavioral |
-- Project Name: |
-- Target Devices: |
-- Tool versions: |
-- Description: Implements complete IP stack with ARP and MAC |
-- |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Additional Comments: |
-- |
---------------------------------------------------------------------------------- |
LIBRARY ieee; |
USE ieee.std_logic_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.axi.all; |
use work.ipv4_types.all; |
use work.arp_types.all; |
|
entity IP_complete is |
generic ( |
CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr |
ARP_TIMEOUT : integer := 60 -- ARP response timeout (s) |
); |
Port ( |
-- IP Layer signals |
ip_tx_start : in std_logic; |
ip_tx : in ipv4_tx_type; -- IP tx cxns |
ip_tx_result : out std_logic_vector (1 downto 0); -- tx status (changes during transmission) |
ip_tx_data_out_ready : out std_logic; -- indicates IP TX is ready to take data |
ip_rx_start : out std_logic; -- indicates receipt of ip frame. |
ip_rx : out ipv4_rx_type; |
-- system signals |
clk_in_p : in std_logic; -- 200MHz clock input from board |
clk_in_n : in std_logic; |
clk_out : out std_logic; |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
our_mac_address : in std_logic_vector (47 downto 0); |
control : in ip_control_type; |
-- status signals |
arp_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- count of arp pkts received |
ip_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us |
-- GMII Interface |
phy_resetn : out std_logic; |
gmii_txd : out std_logic_vector(7 downto 0); |
gmii_tx_en : out std_logic; |
gmii_tx_er : out std_logic; |
gmii_tx_clk : out std_logic; |
gmii_rxd : in std_logic_vector(7 downto 0); |
gmii_rx_dv : in std_logic; |
gmii_rx_er : in std_logic; |
gmii_rx_clk : in std_logic; |
gmii_col : in std_logic; |
gmii_crs : in std_logic; |
mii_tx_clk : in std_logic |
); |
end IP_complete; |
|
architecture structural of IP_complete is |
|
------------------------------------------------------------------------------ |
-- Component Declaration for the IP layer |
------------------------------------------------------------------------------ |
|
COMPONENT IP_complete_nomac |
generic ( |
CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr |
ARP_TIMEOUT : integer := 60 -- ARP response timeout (s) |
); |
Port ( |
-- IP Layer signals |
ip_tx_start : in std_logic; |
ip_tx : in ipv4_tx_type; -- IP tx cxns |
ip_tx_result : out std_logic_vector (1 downto 0); -- tx status (changes during transmission) |
ip_tx_data_out_ready : out std_logic; -- indicates IP TX is ready to take data |
ip_rx_start : out std_logic; -- indicates receipt of ip frame. |
ip_rx : out ipv4_rx_type; |
-- system signals |
rx_clk : in STD_LOGIC; |
tx_clk : in STD_LOGIC; |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
our_mac_address : in std_logic_vector (47 downto 0); |
control : in ip_control_type; |
-- status signals |
arp_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- count of arp pkts received |
ip_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us |
-- MAC Transmitter |
mac_tx_tdata : out std_logic_vector(7 downto 0); -- data byte to tx |
mac_tx_tvalid : out std_logic; -- tdata is valid |
mac_tx_tready : in std_logic; -- mac is ready to accept data |
mac_tx_tfirst : out std_logic; -- indicates first byte of frame |
mac_tx_tlast : out std_logic; -- indicates last byte of frame |
-- MAC Receiver |
mac_rx_tdata : in std_logic_vector(7 downto 0); -- data byte received |
mac_rx_tvalid : in std_logic; -- indicates tdata is valid |
mac_rx_tready : out std_logic; -- tells mac that we are ready to take data |
mac_rx_tlast : in std_logic -- indicates last byte of the trame |
); |
END COMPONENT; |
|
|
------------------------------------------------------------------------------ |
-- Component Declaration for the MAC layer |
------------------------------------------------------------------------------ |
component mac_layer |
port ( |
-- System controls |
------------------ |
glbl_rst : in std_logic; -- asynchronous reset |
mac_reset : in std_logic; -- reset mac layer |
clk_in_p : in std_logic; -- 200MHz clock input from board |
clk_in_n : in std_logic; |
|
-- MAC Transmitter (AXI-S) Interface |
--------------------------------------------- |
mac_tx_clock : out std_logic; -- data sampled on rising edge |
mac_tx_tdata : in std_logic_vector(7 downto 0); -- data byte to tx |
mac_tx_tvalid : in std_logic; -- tdata is valid |
mac_tx_tready : out std_logic; -- mac is ready to accept data |
mac_tx_tlast : in std_logic; -- indicates last byte of frame |
|
-- MAC Receiver (AXI-S) Interface |
------------------------------------------ |
mac_rx_clock : out std_logic; -- data valid on rising edge |
mac_rx_tdata : out std_logic_vector(7 downto 0); -- data byte received |
mac_rx_tvalid : out std_logic; -- indicates tdata is valid |
mac_rx_tready : in std_logic; -- tells mac that we are ready to take data |
mac_rx_tlast : out std_logic; -- indicates last byte of the trame |
|
-- GMII Interface |
----------------- |
phy_resetn : out std_logic; |
gmii_txd : out std_logic_vector(7 downto 0); |
gmii_tx_en : out std_logic; |
gmii_tx_er : out std_logic; |
gmii_tx_clk : out std_logic; |
gmii_rxd : in std_logic_vector(7 downto 0); |
gmii_rx_dv : in std_logic; |
gmii_rx_er : in std_logic; |
gmii_rx_clk : in std_logic; |
gmii_col : in std_logic; |
gmii_crs : in std_logic; |
mii_tx_clk : in std_logic |
); |
end component; |
|
--------------------------- |
-- Signals |
--------------------------- |
|
-- MAC RX bus |
signal mac_rx_clock : std_logic; |
signal mac_rx_tdata : std_logic_vector (7 downto 0); |
signal mac_rx_tvalid : std_logic; |
signal mac_rx_tready : std_logic; |
signal mac_rx_tlast : std_logic; |
-- MAC TX bus |
signal mac_tx_clock : std_logic; |
signal mac_tx_tdata : std_logic_vector (7 downto 0); |
signal mac_tx_tvalid : std_logic; |
signal mac_tx_tready : std_logic; |
signal mac_tx_tlast : std_logic; |
-- control signals |
signal mac_tx_tready_int : std_logic; |
signal mac_tx_granted_int : std_logic; |
|
begin |
|
clk_out <= mac_rx_clock; |
|
------------------------------------------------------------------------------ |
-- Instantiate the IP layer |
------------------------------------------------------------------------------ |
|
IP_layer : IP_complete_nomac |
generic map ( |
CLOCK_FREQ => CLOCK_FREQ, |
ARP_TIMEOUT => ARP_TIMEOUT |
) |
PORT MAP ( |
-- IP Layer signals |
ip_tx_start => ip_tx_start, |
ip_tx => ip_tx, |
ip_tx_result => ip_tx_result, |
ip_tx_data_out_ready => ip_tx_data_out_ready, |
ip_rx_start => ip_rx_start, |
ip_rx => ip_rx, |
-- system signals |
rx_clk => mac_rx_clock, |
tx_clk => mac_rx_clock, |
reset => reset, |
our_ip_address => our_ip_address, |
our_mac_address => our_mac_address, |
control => control, |
-- status signals |
arp_pkt_count => arp_pkt_count, |
ip_pkt_count => ip_pkt_count, |
-- MAC Transmitter |
mac_tx_tready => mac_tx_tready_int, |
mac_tx_tvalid => mac_tx_tvalid, |
mac_tx_tfirst => open, |
mac_tx_tlast => mac_tx_tlast, |
mac_tx_tdata => mac_tx_tdata, |
-- MAC Receiver |
mac_rx_tdata => mac_rx_tdata, |
mac_rx_tvalid => mac_rx_tvalid, |
mac_rx_tready => mac_rx_tready, |
mac_rx_tlast => mac_rx_tlast |
); |
|
|
------------------------------------------------------------------------------ |
-- Instantiate the MAC layer |
------------------------------------------------------------------------------ |
mac_block : mac_layer |
Port map( |
-- System controls |
------------------ |
glbl_rst => reset, |
mac_reset => '0', |
clk_in_p => clk_in_p, |
clk_in_n => clk_in_n, |
|
-- MAC Transmitter (AXI-S) Interface |
--------------------------------------------- |
mac_tx_clock => mac_tx_clock, |
mac_tx_tdata => mac_tx_tdata, |
mac_tx_tvalid => mac_tx_tvalid, |
mac_tx_tready => mac_tx_tready_int, |
mac_tx_tlast => mac_tx_tlast, |
|
-- MAC Receiver (AXI-S) Interface |
------------------------------------------ |
mac_rx_clock => mac_rx_clock, |
mac_rx_tdata => mac_rx_tdata, |
mac_rx_tvalid => mac_rx_tvalid, |
mac_rx_tready => mac_rx_tready, |
mac_rx_tlast => mac_rx_tlast, |
|
-- GMII Interface |
----------------- |
phy_resetn => phy_resetn, |
gmii_txd => gmii_txd, |
gmii_tx_en => gmii_tx_en, |
gmii_tx_er => gmii_tx_er, |
gmii_tx_clk => gmii_tx_clk, |
gmii_rxd => gmii_rxd, |
gmii_rx_dv => gmii_rx_dv, |
gmii_rx_er => gmii_rx_er, |
gmii_rx_clk => gmii_rx_clk, |
gmii_col => gmii_col, |
gmii_crs => gmii_crs, |
mii_tx_clk => mii_tx_clk |
); |
|
end structural; |
|
/udp_ip_stack/tags/v1.3/rtl/vhdl/ml605/UDP_Complete.vhd
0,0 → 1,284
---------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: |
-- |
-- Create Date: 17:51:18 06/11/2011 |
-- Design Name: |
-- Module Name: UDP_Complete - Behavioral |
-- Project Name: |
-- Target Devices: |
-- Tool versions: |
-- Description: |
-- |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Revision 0.02 - separated RX and TX clocks |
-- Additional Comments: |
-- |
---------------------------------------------------------------------------------- |
library IEEE; |
use IEEE.STD_LOGIC_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.axi.all; |
use work.ipv4_types.all; |
use work.arp_types.all; |
|
entity UDP_Complete is |
generic ( |
CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr |
ARP_TIMEOUT : integer := 60 -- ARP response timeout (s) |
); |
Port ( |
-- UDP TX signals |
udp_tx_start : in std_logic; -- indicates req to tx UDP |
udp_txi : in udp_tx_type; -- UDP tx cxns |
udp_tx_result : out std_logic_vector (1 downto 0);-- tx status (changes during transmission) |
udp_tx_data_out_ready: out std_logic; -- indicates udp_tx is ready to take data |
-- UDP RX signals |
udp_rx_start : out std_logic; -- indicates receipt of udp header |
udp_rxo : out udp_rx_type; |
-- IP RX signals |
ip_rx_hdr : out ipv4_rx_header_type; |
-- system signals |
clk_in_p : in std_logic; -- 200MHz clock input from board |
clk_in_n : in std_logic; |
clk_out : out std_logic; |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
our_mac_address : in std_logic_vector (47 downto 0); |
control : in udp_control_type; |
-- status signals |
arp_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- count of arp pkts received |
ip_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us |
-- GMII Interface |
phy_resetn : out std_logic; |
gmii_txd : out std_logic_vector(7 downto 0); |
gmii_tx_en : out std_logic; |
gmii_tx_er : out std_logic; |
gmii_tx_clk : out std_logic; |
gmii_rxd : in std_logic_vector(7 downto 0); |
gmii_rx_dv : in std_logic; |
gmii_rx_er : in std_logic; |
gmii_rx_clk : in std_logic; |
gmii_col : in std_logic; |
gmii_crs : in std_logic; |
mii_tx_clk : in std_logic |
); |
end UDP_Complete; |
|
architecture structural of UDP_Complete is |
|
------------------------------------------------------------------------------ |
-- Component Declaration for UDP complete no mac |
------------------------------------------------------------------------------ |
|
COMPONENT UDP_Complete_nomac |
generic ( |
CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr |
ARP_TIMEOUT : integer := 60 -- ARP response timeout (s) |
); |
Port ( |
-- UDP TX signals |
udp_tx_start : in std_logic; -- indicates req to tx UDP |
udp_txi : in udp_tx_type; -- UDP tx cxns |
udp_tx_result : out std_logic_vector (1 downto 0);-- tx status (changes during transmission) |
udp_tx_data_out_ready: out std_logic; -- indicates udp_tx is ready to take data |
-- UDP RX signals |
udp_rx_start : out std_logic; -- indicates receipt of udp header |
udp_rxo : out udp_rx_type; |
-- IP RX signals |
ip_rx_hdr : out ipv4_rx_header_type; |
-- system signals |
rx_clk : in STD_LOGIC; |
tx_clk : in STD_LOGIC; |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
our_mac_address : in std_logic_vector (47 downto 0); |
control : in udp_control_type; |
-- status signals |
arp_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- count of arp pkts received |
ip_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us |
-- MAC Transmitter |
mac_tx_tdata : out std_logic_vector(7 downto 0); -- data byte to tx |
mac_tx_tvalid : out std_logic; -- tdata is valid |
mac_tx_tready : in std_logic; -- mac is ready to accept data |
mac_tx_tfirst : out std_logic; -- indicates first byte of frame |
mac_tx_tlast : out std_logic; -- indicates last byte of frame |
-- MAC Receiver |
mac_rx_tdata : in std_logic_vector(7 downto 0); -- data byte received |
mac_rx_tvalid : in std_logic; -- indicates tdata is valid |
mac_rx_tready : out std_logic; -- tells mac that we are ready to take data |
mac_rx_tlast : in std_logic -- indicates last byte of the trame |
); |
END COMPONENT; |
|
|
------------------------------------------------------------------------------ |
-- Component Declaration for the MAC layer |
------------------------------------------------------------------------------ |
component mac_layer |
port ( |
-- System controls |
------------------ |
glbl_rst : in std_logic; -- asynchronous reset |
mac_reset : in std_logic; -- reset mac layer |
clk_in_p : in std_logic; -- 200MHz clock input from board |
clk_in_n : in std_logic; |
|
-- MAC Transmitter (AXI-S) Interface |
--------------------------------------------- |
mac_tx_clock : out std_logic; -- data sampled on rising edge |
mac_tx_tdata : in std_logic_vector(7 downto 0); -- data byte to tx |
mac_tx_tvalid : in std_logic; -- tdata is valid |
mac_tx_tready : out std_logic; -- mac is ready to accept data |
mac_tx_tlast : in std_logic; -- indicates last byte of frame |
|
-- MAC Receiver (AXI-S) Interface |
------------------------------------------ |
mac_rx_clock : out std_logic; -- data valid on rising edge |
mac_rx_tdata : out std_logic_vector(7 downto 0); -- data byte received |
mac_rx_tvalid : out std_logic; -- indicates tdata is valid |
mac_rx_tready : in std_logic; -- tells mac that we are ready to take data |
mac_rx_tlast : out std_logic; -- indicates last byte of the trame |
|
-- GMII Interface |
----------------- |
phy_resetn : out std_logic; |
gmii_txd : out std_logic_vector(7 downto 0); |
gmii_tx_en : out std_logic; |
gmii_tx_er : out std_logic; |
gmii_tx_clk : out std_logic; |
gmii_rxd : in std_logic_vector(7 downto 0); |
gmii_rx_dv : in std_logic; |
gmii_rx_er : in std_logic; |
gmii_rx_clk : in std_logic; |
gmii_col : in std_logic; |
gmii_crs : in std_logic; |
mii_tx_clk : in std_logic |
); |
end component; |
|
|
--------------------------- |
-- Signals |
--------------------------- |
|
-- MAC RX bus |
signal mac_rx_clock : std_logic; |
signal mac_rx_tdata : std_logic_vector (7 downto 0); |
signal mac_rx_tvalid : std_logic; |
signal mac_rx_tready : std_logic; |
signal mac_rx_tlast : std_logic; |
-- MAC TX bus |
signal mac_tx_clock : std_logic; |
signal mac_tx_tdata : std_logic_vector (7 downto 0); |
signal mac_tx_tvalid : std_logic; |
signal mac_tx_tready : std_logic; |
signal mac_tx_tlast : std_logic; |
-- control signals |
signal mac_tx_tready_int : std_logic; |
signal mac_tx_granted_int : std_logic; |
|
|
begin |
|
|
process (mac_tx_clock) |
begin |
-- output followers |
clk_out <= mac_tx_clock; |
end process; |
|
------------------------------------------------------------------------------ |
-- Instantiate the UDP layer |
------------------------------------------------------------------------------ |
|
udp_block: UDP_Complete_nomac |
generic map ( |
CLOCK_FREQ => CLOCK_FREQ, |
ARP_TIMEOUT => ARP_TIMEOUT |
) |
PORT MAP ( |
-- UDP TX signals |
udp_tx_start => udp_tx_start, |
udp_txi => udp_txi, |
udp_tx_result => udp_tx_result, |
udp_tx_data_out_ready => udp_tx_data_out_ready, |
-- UDP RX signals |
udp_rx_start => udp_rx_start, |
udp_rxo => udp_rxo, |
-- IP RX signals |
ip_rx_hdr => ip_rx_hdr, |
-- system signals |
rx_clk => mac_rx_clock, |
tx_clk => mac_tx_clock, |
reset => reset, |
our_ip_address => our_ip_address, |
our_mac_address => our_mac_address, |
-- status signals |
arp_pkt_count => arp_pkt_count, |
ip_pkt_count => ip_pkt_count, |
control => control, |
-- MAC Transmitter |
mac_tx_tready => mac_tx_tready_int, |
mac_tx_tvalid => mac_tx_tvalid, |
mac_tx_tfirst => open, |
mac_tx_tlast => mac_tx_tlast, |
mac_tx_tdata => mac_tx_tdata, |
-- MAC Receiver |
mac_rx_tdata => mac_rx_tdata, |
mac_rx_tvalid => mac_rx_tvalid, |
mac_rx_tready => mac_rx_tready, |
mac_rx_tlast => mac_rx_tlast |
); |
|
|
------------------------------------------------------------------------------ |
-- Instantiate the MAC layer |
------------------------------------------------------------------------------ |
mac_block : mac_layer |
Port map( |
-- System controls |
------------------ |
glbl_rst => reset, |
mac_reset => '0', |
clk_in_p => clk_in_p, |
clk_in_n => clk_in_n, |
|
-- MAC Transmitter (AXI-S) Interface |
--------------------------------------------- |
mac_tx_clock => mac_tx_clock, |
mac_tx_tdata => mac_tx_tdata, |
mac_tx_tvalid => mac_tx_tvalid, |
mac_tx_tready => mac_tx_tready_int, |
mac_tx_tlast => mac_tx_tlast, |
|
-- MAC Receiver (AXI-S) Interface |
------------------------------------------ |
mac_rx_clock => mac_rx_clock, |
mac_rx_tdata => mac_rx_tdata, |
mac_rx_tvalid => mac_rx_tvalid, |
mac_rx_tready => mac_rx_tready, |
mac_rx_tlast => mac_rx_tlast, |
|
-- GMII Interface |
----------------- |
phy_resetn => phy_resetn, |
gmii_txd => gmii_txd, |
gmii_tx_en => gmii_tx_en, |
gmii_tx_er => gmii_tx_er, |
gmii_tx_clk => gmii_tx_clk, |
gmii_rxd => gmii_rxd, |
gmii_rx_dv => gmii_rx_dv, |
gmii_rx_er => gmii_rx_er, |
gmii_rx_clk => gmii_rx_clk, |
gmii_col => gmii_col, |
gmii_crs => gmii_crs, |
mii_tx_clk => mii_tx_clk |
); |
|
|
end structural; |
|
/udp_ip_stack/tags/v1.3/rtl/vhdl/ml605/UDP_integration_example.vhd
0,0 → 1,419
---------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: |
-- |
-- Create Date: 11:01:00 06/11/2011 |
-- Design Name: |
-- Module Name: UDP_integration_example - Behavioral |
-- Project Name: |
-- Target Devices: |
-- Tool versions: |
-- Description: |
-- |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Additional Comments: |
-- |
---------------------------------------------------------------------------------- |
library IEEE; |
use IEEE.STD_LOGIC_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.axi.all; |
use work.ipv4_types.all; |
use work.arp_types.all; |
|
entity UDP_integration_example is |
port ( |
-- System signals |
------------------ |
reset : in std_logic; -- asynchronous reset |
clk_in_p : in std_logic; -- 200MHz clock input from board |
clk_in_n : in std_logic; |
|
-- System controls |
------------------ |
PBTX : in std_logic; |
UDP_RX : out std_logic; |
UDP_Start : out std_logic; |
PBTX_LED : out std_logic; |
TX_Started : out std_logic; |
TX_Completed : out std_logic; |
TX_RSLT_0 : out std_logic; |
TX_RSLT_1 : out std_logic; |
reset_leds : in std_logic; |
display : out std_logic_vector(7 downto 0); |
|
-- GMII Interface |
----------------- |
phy_resetn : out std_logic; |
gmii_txd : out std_logic_vector(7 downto 0); |
gmii_tx_en : out std_logic; |
gmii_tx_er : out std_logic; |
gmii_tx_clk : out std_logic; |
gmii_rxd : in std_logic_vector(7 downto 0); |
gmii_rx_dv : in std_logic; |
gmii_rx_er : in std_logic; |
gmii_rx_clk : in std_logic; |
gmii_col : in std_logic; |
gmii_crs : in std_logic; |
mii_tx_clk : in std_logic |
); |
end UDP_integration_example; |
|
architecture Behavioral of UDP_integration_example is |
|
------------------------------------------------------------------------------ |
-- Component Declaration for the complete IP layer |
------------------------------------------------------------------------------ |
component UDP_Complete |
generic ( |
CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr |
ARP_TIMEOUT : integer := 60 -- ARP response timeout (s) |
); |
Port ( |
-- UDP TX signals |
udp_tx_start : in std_logic; -- indicates req to tx UDP |
udp_txi : in udp_tx_type; -- UDP tx cxns |
udp_tx_result : out std_logic_vector (1 downto 0);-- tx status (changes during transmission) |
udp_tx_data_out_ready: out std_logic; -- indicates udp_tx is ready to take data |
-- UDP RX signals |
udp_rx_start : out std_logic; -- indicates receipt of udp header |
udp_rxo : out udp_rx_type; |
-- IP RX signals |
ip_rx_hdr : out ipv4_rx_header_type; |
-- system signals |
clk_in_p : in std_logic; -- 200MHz clock input from board |
clk_in_n : in std_logic; |
clk_out : out std_logic; |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
our_mac_address : in std_logic_vector (47 downto 0); |
control : in udp_control_type; |
-- status signals |
arp_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- count of arp pkts received |
ip_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us |
-- GMII Interface |
phy_resetn : out std_logic; |
gmii_txd : out std_logic_vector(7 downto 0); |
gmii_tx_en : out std_logic; |
gmii_tx_er : out std_logic; |
gmii_tx_clk : out std_logic; |
gmii_rxd : in std_logic_vector(7 downto 0); |
gmii_rx_dv : in std_logic; |
gmii_rx_er : in std_logic; |
gmii_rx_clk : in std_logic; |
gmii_col : in std_logic; |
gmii_crs : in std_logic; |
mii_tx_clk : in std_logic |
); |
end component; |
|
|
type state_type is (IDLE, WAIT_RX_DONE, DATA_OUT); |
type count_mode_type is (RST, INCR, HOLD); |
type set_clr_type is (SET, CLR, HOLD); |
|
-- system signals |
signal clk_int : std_logic; |
signal our_mac : STD_LOGIC_VECTOR (47 downto 0); |
signal our_ip : STD_LOGIC_VECTOR (31 downto 0); |
signal udp_tx_int : udp_tx_type; |
signal udp_tx_result_int : std_logic_vector (1 downto 0); |
signal udp_tx_data_out_ready_int : std_logic; |
signal udp_rx_int : udp_rx_type; |
signal udp_tx_start_int : std_logic; |
signal udp_rx_start_int : std_logic; |
signal arp_pkt_count_int : STD_LOGIC_VECTOR(7 downto 0); |
signal ip_pkt_count_int : STD_LOGIC_VECTOR(7 downto 0); |
signal ip_rx_hdr_int : ipv4_rx_header_type; |
|
-- state signals |
signal state : state_type; |
signal count : unsigned (7 downto 0); |
signal tx_hdr : udp_tx_header_type; |
signal tx_start_reg : std_logic; |
signal tx_started_reg : std_logic; |
signal tx_fin_reg : std_logic; |
|
-- control signals |
signal next_state : state_type; |
signal set_state : std_logic; |
signal set_count : count_mode_type; |
signal set_hdr : std_logic; |
signal set_tx_start : set_clr_type; |
signal set_last : std_logic; |
signal set_tx_started : set_clr_type; |
signal set_tx_fin : set_clr_type; |
signal first_byte_rx : STD_LOGIC_VECTOR(7 downto 0); |
signal control_int : udp_control_type; |
|
begin |
|
process ( |
our_ip, our_mac, udp_tx_result_int, udp_rx_int, udp_tx_start_int, udp_rx_start_int, ip_rx_hdr_int, |
udp_tx_int, count, clk_int, ip_pkt_count_int, arp_pkt_count_int, |
reset, tx_started_reg, tx_fin_reg, tx_start_reg |
) |
begin |
-- set up our local addresses and default controls |
our_ip <= x"c0a80509"; -- 192.168.5.9 |
our_mac <= x"002320212223"; |
control_int.ip_controls.arp_controls.clear_cache <= '0'; |
|
-- determine RX good and error LEDs |
if udp_rx_int.hdr.is_valid = '1' then |
UDP_RX <= '1'; |
else |
UDP_RX <= '0'; |
end if; |
|
UDP_Start <= udp_rx_start_int; |
TX_Started <= tx_start_reg; --tx_started_reg; |
TX_Completed <= tx_fin_reg; |
TX_RSLT_0 <= udp_tx_result_int(0); |
TX_RSLT_1 <= udp_tx_result_int(1); |
|
-- set display leds to show IP pkt rx count on 7..4 and arp rx count on 3..0 |
display (7 downto 4) <= ip_pkt_count_int (3 downto 0); |
|
-- display (3 downto 0) <= arp_pkt_count_int (3 downto 0); |
case state is |
when IDLE => display (3 downto 0) <= "0001"; |
when WAIT_RX_DONE => display (3 downto 0) <= "0010"; |
when DATA_OUT => display (3 downto 0) <= "0011"; |
end case; |
|
end process; |
|
-- AUTO TX process - on receipt of any UDP pkt, send a response. data sent is modified if a broadcast was received. |
|
-- TX response process - COMB |
tx_proc_combinatorial: process( |
-- inputs |
udp_rx_start_int, udp_rx_int, udp_tx_data_out_ready_int, udp_tx_result_int, ip_rx_hdr_int, |
udp_tx_int.data.data_out_valid, PBTX, |
-- state |
state, count, tx_hdr, tx_start_reg, tx_started_reg, tx_fin_reg, |
-- controls |
next_state, set_state, set_count, set_hdr, set_tx_start, set_last, |
set_tx_started, set_tx_fin, first_byte_rx |
) |
begin |
-- set output_followers |
udp_tx_int.hdr <= tx_hdr; |
udp_tx_int.data.data_out_last <= set_last; |
udp_tx_start_int <= tx_start_reg; |
|
-- set control signal defaults |
next_state <= IDLE; |
set_state <= '0'; |
set_count <= HOLD; |
set_hdr <= '0'; |
set_tx_start <= HOLD; |
set_last <= '0'; |
set_tx_started <= HOLD; |
set_tx_fin <= HOLD; |
first_byte_rx <= (others => '0'); |
udp_tx_int.data.data_out <= (others => '0'); |
udp_tx_int.data.data_out_valid <= '0'; |
|
-- FSM |
case state is |
|
when IDLE => |
udp_tx_int.data.data_out_valid <= '0'; |
if udp_rx_start_int = '1' or PBTX = '1' then |
if udp_rx_start_int = '1' then |
first_byte_rx <= udp_rx_int.data.data_in; |
else |
first_byte_rx <= x"00"; |
end if; |
set_tx_fin <= CLR; |
set_count <= RST; |
set_hdr <= '1'; |
if udp_rx_int.data.data_in_last = '1' then |
set_tx_started <= SET; |
set_tx_start <= SET; |
next_state <= DATA_OUT; |
set_state <= '1'; |
else |
next_state <= WAIT_RX_DONE; |
set_state <= '1'; |
end if; |
end if; |
|
when WAIT_RX_DONE => |
-- wait until RX pkt fully received |
if udp_rx_int.data.data_in_last = '1' then |
set_tx_started <= SET; |
set_tx_start <= SET; |
next_state <= DATA_OUT; |
set_state <= '1'; |
end if; |
|
when DATA_OUT => |
if udp_tx_result_int = UDPTX_RESULT_ERR then |
-- have an error from the IP TX layer, clear down the TX |
set_tx_start <= CLR; |
set_tx_fin <= SET; |
set_tx_started <= CLR; |
next_state <= IDLE; |
set_state <= '1'; |
else |
if udp_tx_result_int = UDPTX_RESULT_SENDING then |
set_tx_start <= CLR; -- reset out start req as soon as we know we are sending |
end if; |
if ip_rx_hdr_int.is_broadcast = '1' then |
udp_tx_int.data.data_out <= std_logic_vector(count) or x"50"; |
else |
udp_tx_int.data.data_out <= std_logic_vector(count) or x"40"; |
end if; |
udp_tx_int.data.data_out_valid <= udp_tx_data_out_ready_int; |
if udp_tx_data_out_ready_int = '1' then |
if unsigned(count) = x"03" then |
set_last <= '1'; |
set_tx_fin <= SET; |
set_tx_started <= CLR; |
next_state <= IDLE; |
set_state <= '1'; |
else |
set_count <= INCR; |
end if; |
end if; |
end if; |
|
end case; |
end process; |
|
|
|
-- TX response process - SEQ |
tx_proc_sequential: process(clk_int) |
begin |
if rising_edge(clk_int) then |
if reset = '1' then |
-- reset state variables |
state <= IDLE; |
count <= x"00"; |
tx_start_reg <= '0'; |
tx_hdr.dst_ip_addr <= (others => '0'); |
tx_hdr.dst_port <= (others => '0'); |
tx_hdr.src_port <= (others => '0'); |
tx_hdr.data_length <= (others => '0'); |
tx_hdr.checksum <= (others => '0'); |
tx_started_reg <= '0'; |
tx_fin_reg <= '0'; |
PBTX_LED <= '0'; |
else |
PBTX_LED <= PBTX; |
|
-- Next rx_state processing |
if set_state = '1' then |
state <= next_state; |
else |
state <= state; |
end if; |
|
-- count processing |
case set_count is |
when RST => count <= x"00"; |
when INCR => count <= count + 1; |
when HOLD => count <= count; |
end case; |
|
-- set tx hdr |
if set_hdr = '1' then |
-- if the first byte of the rx pkt is 'B' then send to broadcast, otherwise send to reply IP |
if first_byte_rx = x"42" then |
tx_hdr.dst_ip_addr <= IP_BC_ADDR; -- send to Broadcast addr |
elsif first_byte_rx = x"43" then |
tx_hdr.dst_ip_addr <= x"c0bbccdd"; -- set dst unknown so get ARP timeout |
else |
tx_hdr.dst_ip_addr <= udp_rx_int.hdr.src_ip_addr; -- reply to sender |
end if; |
tx_hdr.dst_port <= udp_rx_int.hdr.src_port; |
tx_hdr.src_port <= udp_rx_int.hdr.dst_port; |
tx_hdr.data_length <= x"0004"; |
tx_hdr.checksum <= x"0000"; |
else |
tx_hdr <= tx_hdr; |
end if; |
|
-- set tx start signal |
case set_tx_start is |
when SET => tx_start_reg <= '1'; |
when CLR => tx_start_reg <= '0'; |
when HOLD => tx_start_reg <= tx_start_reg; |
end case; |
|
-- set tx started signal |
case set_tx_started is |
when SET => tx_started_reg <= '1'; |
when CLR => tx_started_reg <= '0'; |
when HOLD => tx_started_reg <= tx_started_reg; |
end case; |
|
-- set tx finished signal |
case set_tx_fin is |
when SET => tx_fin_reg <= '1'; |
when CLR => tx_fin_reg <= '0'; |
when HOLD => tx_fin_reg <= tx_fin_reg; |
end case; |
|
|
end if; |
end if; |
|
end process; |
|
|
|
------------------------------------------------------------------------------ |
-- Instantiate the UDP layer |
------------------------------------------------------------------------------ |
UDP_block : UDP_Complete |
generic map ( |
ARP_TIMEOUT => 30 -- timeout in seconds |
) |
PORT MAP ( |
-- UDP interface |
udp_tx_start => udp_tx_start_int, |
udp_txi => udp_tx_int, |
udp_tx_result => udp_tx_result_int, |
udp_tx_data_out_ready=> udp_tx_data_out_ready_int, |
udp_rx_start => udp_rx_start_int, |
udp_rxo => udp_rx_int, |
-- IP RX signals |
ip_rx_hdr => ip_rx_hdr_int, |
-- System interface |
clk_in_p => clk_in_p, |
clk_in_n => clk_in_n, |
clk_out => clk_int, |
reset => reset, |
our_ip_address => our_ip, |
our_mac_address => our_mac, |
control => control_int, |
-- status signals |
arp_pkt_count => arp_pkt_count_int, |
ip_pkt_count => ip_pkt_count_int, |
-- GMII Interface |
----------------- |
phy_resetn => phy_resetn, |
gmii_txd => gmii_txd, |
gmii_tx_en => gmii_tx_en, |
gmii_tx_er => gmii_tx_er, |
gmii_tx_clk => gmii_tx_clk, |
gmii_rxd => gmii_rxd, |
gmii_rx_dv => gmii_rx_dv, |
gmii_rx_er => gmii_rx_er, |
gmii_rx_clk => gmii_rx_clk, |
gmii_col => gmii_col, |
gmii_crs => gmii_crs, |
mii_tx_clk => mii_tx_clk |
); |
|
|
end Behavioral; |
|
/udp_ip_stack/tags/v1.3/rtl/vhdl/ml605/udp_constraints.ucf
0,0 → 1,82
CONFIG PART = xc6vlx240tff1156-1; |
|
|
########## ML605 Board ########## |
NET clk_in_p LOC = J9 |IOSTANDARD = LVDS_25 |DIFF_TERM = TRUE; |
NET clk_in_n LOC = H9 |IOSTANDARD = LVDS_25 |DIFF_TERM = TRUE; |
|
Net reset LOC = H10 |IOSTANDARD = LVCMOS15 |TIG; |
|
# downgrade the Place:1153 error in the mapper |
NET "reset" CLOCK_DEDICATED_ROUTE = FALSE; |
|
#### Module LEDs_8Bit constraints |
NET "display[0]" LOC = AC22; |
NET "display[1]" LOC = AC24; |
NET "display[2]" LOC = AE22; |
NET "display[3]" LOC = AE23; |
NET "display[4]" LOC = AB23; |
NET "display[5]" LOC = AG23; |
NET "display[6]" LOC = AE24; |
NET "display[7]" LOC = AD24; |
|
NET PBTX_LED LOC = AD21; |
NET UDP_RX LOC = AH27; |
NET UDP_START LOC = AH28; |
NET TX_RSLT_0 LOC = AE21; |
NET TX_RSLT_1 LOC = AP24; |
|
|
|
#### Module Push_Buttons_4Bit constraints |
NET PBTX LOC = H17; |
NET reset_leds LOC = G26; |
|
#### Module DIP_Switches_4Bit constraints |
|
|
Net phy_resetn LOC = AH13 |IOSTANDARD = LVCMOS25 |TIG; |
|
Net gmii_rxd<7> LOC = AC13 |IOSTANDARD = LVCMOS25; |
Net gmii_rxd<6> LOC = AC12 |IOSTANDARD = LVCMOS25; |
Net gmii_rxd<5> LOC = AD11 |IOSTANDARD = LVCMOS25; |
Net gmii_rxd<4> LOC = AM12 |IOSTANDARD = LVCMOS25; |
Net gmii_rxd<3> LOC = AN12 |IOSTANDARD = LVCMOS25; |
Net gmii_rxd<2> LOC = AE14 |IOSTANDARD = LVCMOS25; |
Net gmii_rxd<1> LOC = AF14 |IOSTANDARD = LVCMOS25; |
Net gmii_rxd<0> LOC = AN13 |IOSTANDARD = LVCMOS25; |
|
Net gmii_txd<7> LOC = AF11 |IOSTANDARD = LVCMOS25; |
Net gmii_txd<6> LOC = AE11 |IOSTANDARD = LVCMOS25; |
Net gmii_txd<5> LOC = AM10 |IOSTANDARD = LVCMOS25; |
Net gmii_txd<4> LOC = AL10 |IOSTANDARD = LVCMOS25; |
Net gmii_txd<3> LOC = AG11 |IOSTANDARD = LVCMOS25; |
Net gmii_txd<2> LOC = AG10 |IOSTANDARD = LVCMOS25; |
Net gmii_txd<1> LOC = AL11 |IOSTANDARD = LVCMOS25; |
Net gmii_txd<0> LOC = AM11 |IOSTANDARD = LVCMOS25; |
|
Net gmii_col LOC = AK13 |IOSTANDARD = LVCMOS25; |
Net gmii_crs LOC = AL13 |IOSTANDARD = LVCMOS25; |
Net mii_tx_clk LOC = AD12 |IOSTANDARD = LVCMOS25; |
|
Net gmii_tx_en LOC = AJ10 |IOSTANDARD = LVCMOS25; |
Net gmii_tx_er LOC = AH10 |IOSTANDARD = LVCMOS25; |
Net gmii_tx_clk LOC = AH12 |IOSTANDARD = LVCMOS25; |
|
Net gmii_rx_dv LOC = AM13 |IOSTANDARD = LVCMOS25; |
Net gmii_rx_er LOC = AG12 |IOSTANDARD = LVCMOS25; |
# P20 - GCLK7 |
Net gmii_rx_clk LOC = AP11 |IOSTANDARD = LVCMOS25; |
|
|
|
NET "clk_in_p" TNM_NET = "clk_in_p"; |
TIMESPEC "TS_emac1_clk_in_p" = PERIOD "clk_in_p" 5.000 ns HIGH 50% INPUT_JITTER 50.0ps; |
|
|
# Ethernet GTX_CLK high quality 125 MHz reference clock |
NET "*mac_block/gtx_clk_bufg" TNM_NET = "ref_gtx_clk"; |
TIMEGRP "emac1_clk_ref_gtx" = "ref_gtx_clk"; |
TIMESPEC TS_emac1_clk_ref_gtx = PERIOD "N/A" 8 ns HIGH 50%; |
|
|
/udp_ip_stack/tags/v1.3/rtl/vhdl/arp_types.vhd
0,0 → 1,33
-- |
-- Package File Template |
-- |
-- Purpose: This package defines supplemental types, subtypes, |
-- constants, and functions |
-- |
-- To use any of the example code shown below, uncomment the lines and modify as necessary |
-- |
|
library IEEE; |
use IEEE.STD_LOGIC_1164.all; |
|
package arp_types is |
|
type arp_req_req_type is |
record |
lookup_req : std_logic; -- set high when wanting mac adr for the requested IP |
ip : std_logic_vector (31 downto 0); |
end record; |
|
type arp_req_rslt_type is |
record |
got_mac : std_logic; -- indicates that we got the mac |
mac : std_logic_vector (47 downto 0); |
got_err : std_logic; -- indicates that we got an error (prob a timeout) |
end record; |
|
type arp_control_type is |
record |
clear_cache : std_logic; |
end record; |
|
end arp_types; |
/udp_ip_stack/tags/v1.3/rtl/vhdl/ipv4_types.vhd
0,0 → 1,120
-- |
-- |
-- Purpose: This package defines types for use in IPv4 |
|
|
library IEEE; |
use IEEE.STD_LOGIC_1164.all; |
use work.axi.all; |
use work.arp_types.all; |
|
package ipv4_types is |
|
constant IP_BC_ADDR : std_logic_vector (31 downto 0) := x"ffffffff"; |
constant MAC_BC_ADDR : std_logic_vector (47 downto 0) := x"ffffffffffff"; |
|
-------------- |
-- IPv4 TX -- |
-------------- |
|
-- coding for result in tx |
constant IPTX_RESULT_NONE : std_logic_vector (1 downto 0) := "00"; |
constant IPTX_RESULT_SENDING : std_logic_vector (1 downto 0) := "01"; |
constant IPTX_RESULT_ERR : std_logic_vector (1 downto 0) := "10"; |
constant IPTX_RESULT_SENT : std_logic_vector (1 downto 0) := "11"; |
|
type ipv4_tx_header_type is record |
protocol : std_logic_vector (7 downto 0); |
data_length : STD_LOGIC_VECTOR (15 downto 0); -- user data size, bytes |
dst_ip_addr : STD_LOGIC_VECTOR (31 downto 0); |
end record; |
|
type ipv4_tx_type is record |
hdr : ipv4_tx_header_type; -- header to tx |
data : axi_out_type; -- tx axi bus |
end record; |
|
|
-------------- |
-- IPv4 RX -- |
-------------- |
|
-- coding for last_error_code in rx hdr |
constant RX_EC_NONE : std_logic_vector (3 downto 0) := x"0"; |
constant RX_EC_ET_ETH : std_logic_vector (3 downto 0) := x"1"; -- early termination in ETH hdr phase |
constant RX_EC_ET_IP : std_logic_vector (3 downto 0) := x"2"; -- early termination in IP hdr phase |
constant RX_EC_ET_USER : std_logic_vector (3 downto 0) := x"3"; -- early termination in USER DATA phase |
|
type ipv4_rx_header_type is record |
is_valid : std_logic; |
protocol : std_logic_vector (7 downto 0); |
data_length : STD_LOGIC_VECTOR (15 downto 0); -- user data size, bytes |
src_ip_addr : STD_LOGIC_VECTOR (31 downto 0); |
num_frame_errors : std_logic_vector (7 downto 0); |
last_error_code : std_logic_vector (3 downto 0); -- see RX_EC_xxx constants |
is_broadcast : std_logic; -- set if the msg received is a broadcast |
end record; |
|
type ipv4_rx_type is record |
hdr : ipv4_rx_header_type; -- header received |
data : axi_in_type; -- rx axi bus |
end record; |
|
type ip_control_type is record |
arp_controls : arp_control_type; |
end record; |
|
------------ |
-- UDP TX -- |
------------ |
|
-- coding for result in tx |
constant UDPTX_RESULT_NONE : std_logic_vector (1 downto 0) := "00"; |
constant UDPTX_RESULT_SENDING : std_logic_vector (1 downto 0) := "01"; |
constant UDPTX_RESULT_ERR : std_logic_vector (1 downto 0) := "10"; |
constant UDPTX_RESULT_SENT : std_logic_vector (1 downto 0) := "11"; |
|
type udp_tx_header_type is record |
dst_ip_addr : STD_LOGIC_VECTOR (31 downto 0); |
dst_port : STD_LOGIC_VECTOR (15 downto 0); |
src_port : STD_LOGIC_VECTOR (15 downto 0); |
data_length : STD_LOGIC_VECTOR (15 downto 0); -- user data size, bytes |
checksum : STD_LOGIC_VECTOR (15 downto 0); |
end record; |
|
|
type udp_tx_type is record |
hdr : udp_tx_header_type; -- header received |
data : axi_out_type; -- tx axi bus |
end record; |
|
|
------------ |
-- UDP RX -- |
------------ |
|
type udp_rx_header_type is record |
is_valid : std_logic; |
src_ip_addr : STD_LOGIC_VECTOR (31 downto 0); |
src_port : STD_LOGIC_VECTOR (15 downto 0); |
dst_port : STD_LOGIC_VECTOR (15 downto 0); |
data_length : STD_LOGIC_VECTOR (15 downto 0); -- user data size, bytes |
end record; |
|
|
type udp_rx_type is record |
hdr : udp_rx_header_type; -- header received |
data : axi_in_type; -- rx axi bus |
end record; |
|
type udp_addr_type is record |
ip_addr : STD_LOGIC_VECTOR (31 downto 0); |
port_num : STD_LOGIC_VECTOR (15 downto 0); |
end record; |
|
type udp_control_type is record |
ip_controls : ip_control_type; |
end record; |
|
|
end ipv4_types; |
/udp_ip_stack/tags/v1.3/rtl/vhdl/IP_complete_nomac.vhd
0,0 → 1,299
---------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: |
-- |
-- Create Date: 12:43:16 06/04/2011 |
-- Design Name: |
-- Module Name: IP_complete_nomac - Behavioral |
-- Project Name: |
-- Target Devices: |
-- Tool versions: |
-- Description: Implements complete IP stack with ARP (but no MAC) |
-- |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Revision 0.02 - separated RX and TX clocks |
-- Revision 0.03 - Added mac_tx_tfirst |
-- Additional Comments: |
-- |
---------------------------------------------------------------------------------- |
LIBRARY ieee; |
USE ieee.std_logic_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.axi.all; |
use work.ipv4_types.all; |
use work.arp_types.all; |
|
entity IP_complete_nomac is |
generic ( |
CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr |
ARP_TIMEOUT : integer := 60 -- ARP response timeout (s) |
); |
Port ( |
-- IP Layer signals |
ip_tx_start : in std_logic; |
ip_tx : in ipv4_tx_type; -- IP tx cxns |
ip_tx_result : out std_logic_vector (1 downto 0); -- tx status (changes during transmission) |
ip_tx_data_out_ready : out std_logic; -- indicates IP TX is ready to take data |
ip_rx_start : out std_logic; -- indicates receipt of ip frame. |
ip_rx : out ipv4_rx_type; |
-- system signals |
rx_clk : in STD_LOGIC; |
tx_clk : in STD_LOGIC; |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
our_mac_address : in std_logic_vector (47 downto 0); |
control : in ip_control_type; |
-- status signals |
arp_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- count of arp pkts received |
ip_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us |
-- MAC Transmitter |
mac_tx_tdata : out std_logic_vector(7 downto 0); -- data byte to tx |
mac_tx_tvalid : out std_logic; -- tdata is valid |
mac_tx_tready : in std_logic; -- mac is ready to accept data |
mac_tx_tfirst : out std_logic; -- indicates first byte of frame |
mac_tx_tlast : out std_logic; -- indicates last byte of frame |
-- MAC Receiver |
mac_rx_tdata : in std_logic_vector(7 downto 0); -- data byte received |
mac_rx_tvalid : in std_logic; -- indicates tdata is valid |
mac_rx_tready : out std_logic; -- tells mac that we are ready to take data |
mac_rx_tlast : in std_logic -- indicates last byte of the trame |
); |
end IP_complete_nomac; |
|
architecture structural of IP_complete_nomac is |
|
COMPONENT IPv4 |
PORT( |
-- IP Layer signals |
ip_tx_start : in std_logic; |
ip_tx : in ipv4_tx_type; -- IP tx cxns |
ip_tx_result : out std_logic_vector (1 downto 0); -- tx status (changes during transmission) |
ip_tx_data_out_ready : out std_logic; -- indicates IP TX is ready to take data |
ip_rx_start : out std_logic; -- indicates receipt of ip frame. |
ip_rx : out ipv4_rx_type; |
-- system control signals |
rx_clk : in STD_LOGIC; |
tx_clk : in STD_LOGIC; |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
our_mac_address : in std_logic_vector (47 downto 0); |
-- system status signals |
rx_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us |
-- ARP lookup signals |
arp_req_req : out arp_req_req_type; |
arp_req_rslt : in arp_req_rslt_type; |
-- MAC layer RX signals |
mac_data_in : in STD_LOGIC_VECTOR (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame) |
mac_data_in_valid : in STD_LOGIC; -- indicates data_in valid on clock |
mac_data_in_last : in STD_LOGIC; -- indicates last data in frame |
-- MAC layer TX signals |
mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx) |
mac_tx_granted : in std_logic; -- indicates that access to channel has been granted |
mac_data_out_ready : in std_logic; -- indicates system ready to consume data |
mac_data_out_valid : out std_logic; -- indicates data out is valid |
mac_data_out_first : out std_logic; -- with data out valid indicates the first byte of a frame |
mac_data_out_last : out std_logic; -- with data out valid indicates the last byte of a frame |
mac_data_out : out std_logic_vector (7 downto 0) -- ethernet frame (from dst mac addr through to last byte of frame) |
); |
END COMPONENT; |
|
COMPONENT arp |
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 |
arp_req_req : in arp_req_req_type; |
arp_req_rslt : out arp_req_rslt_type; |
-- MAC layer RX signals |
data_in_clk : in STD_LOGIC; |
reset : in STD_LOGIC; |
data_in : in STD_LOGIC_VECTOR (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame) |
data_in_valid : in STD_LOGIC; -- indicates data_in valid on clock |
data_in_last : in STD_LOGIC; -- indicates last data in frame |
-- MAC layer TX signals |
mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx) |
mac_tx_granted : in std_logic; -- indicates that access to channel has been granted |
data_out_clk : in std_logic; |
data_out_ready : in std_logic; -- indicates system ready to consume data |
data_out_valid : out std_logic; -- indicates data out is valid |
data_out_first : out std_logic; -- with data out valid indicates the first 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) |
-- system signals |
our_mac_address : in STD_LOGIC_VECTOR (47 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 |
); |
END COMPONENT; |
|
COMPONENT tx_arbitrator |
PORT( |
clk : in std_logic; |
reset : in std_logic; |
|
req_1 : in std_logic; |
grant_1 : out std_logic; |
data_1 : in std_logic_vector(7 downto 0); -- data byte to tx |
valid_1 : in std_logic; -- tdata is valid |
first_1 : in std_logic; -- indicates first byte of frame |
last_1 : in std_logic; -- indicates last byte of frame |
|
req_2 : in std_logic; |
grant_2 : out std_logic; |
data_2 : in std_logic_vector(7 downto 0); -- data byte to tx |
valid_2 : in std_logic; -- tdata is valid |
first_2 : in std_logic; -- indicates first byte of frame |
last_2 : in std_logic; -- indicates last byte of frame |
|
data : out std_logic_vector(7 downto 0); -- data byte to tx |
valid : out std_logic; -- tdata is valid |
first : out std_logic; -- indicates first byte of frame |
last : out std_logic -- indicates last byte of frame |
); |
END COMPONENT; |
|
--------------------------- |
-- Signals |
--------------------------- |
|
-- ARP REQUEST |
signal arp_req_req_int : arp_req_req_type; |
signal arp_req_rslt_int : arp_req_rslt_type; |
-- MAC arbitration busses |
signal ip_mac_req : std_logic; |
signal ip_mac_grant : std_logic; |
signal ip_mac_data_out : std_logic_vector (7 downto 0); |
signal ip_mac_valid : std_logic; |
signal ip_mac_first : std_logic; |
signal ip_mac_last : std_logic; |
signal arp_mac_req : std_logic; |
signal arp_mac_grant : std_logic; |
signal arp_mac_data_out : std_logic_vector (7 downto 0); |
signal arp_mac_valid : std_logic; |
signal arp_mac_first : std_logic; |
signal arp_mac_last : std_logic; |
-- MAC RX bus |
signal mac_rx_tready_int : std_logic; |
-- MAC TX bus |
signal mac_tx_tdata_int : std_logic_vector (7 downto 0); |
signal mac_tx_tvalid_int : std_logic; |
signal mac_tx_tfirst_int : std_logic; |
signal mac_tx_tlast_int : std_logic; |
-- control signals |
signal mac_tx_granted_int : std_logic; |
|
begin |
|
mac_rx_tready_int <= '1'; -- enable the mac receiver |
|
-- set followers |
mac_tx_tdata <= mac_tx_tdata_int; |
mac_tx_tvalid <= mac_tx_tvalid_int; |
mac_tx_tfirst <= mac_tx_tfirst_int; |
mac_tx_tlast <= mac_tx_tlast_int; |
|
mac_rx_tready <= mac_rx_tready_int; |
|
------------------------------------------------------------------------------ |
-- Instantiate the IP layer |
------------------------------------------------------------------------------ |
|
IP_layer : IPv4 PORT MAP |
( |
ip_tx_start => ip_tx_start, |
ip_tx => ip_tx, |
ip_tx_result => ip_tx_result, |
ip_tx_data_out_ready=> ip_tx_data_out_ready, |
ip_rx_start => ip_rx_start, |
ip_rx => ip_rx, |
rx_clk => rx_clk, |
tx_clk => tx_clk, |
reset => reset, |
our_ip_address => our_ip_address, |
our_mac_address => our_mac_address, |
rx_pkt_count => ip_pkt_count, |
arp_req_req => arp_req_req_int, |
arp_req_rslt => arp_req_rslt_int, |
mac_tx_req => ip_mac_req, |
mac_tx_granted => ip_mac_grant, |
mac_data_out_ready => mac_tx_tready, |
mac_data_out_valid => ip_mac_valid, |
mac_data_out_first => ip_mac_first, |
mac_data_out_last => ip_mac_last, |
mac_data_out => ip_mac_data_out, |
mac_data_in => mac_rx_tdata, |
mac_data_in_valid => mac_rx_tvalid, |
mac_data_in_last => mac_rx_tlast |
); |
|
------------------------------------------------------------------------------ |
-- Instantiate the ARP layer |
------------------------------------------------------------------------------ |
arp_layer : arp |
generic map ( |
CLOCK_FREQ => CLOCK_FREQ, |
ARP_TIMEOUT => ARP_TIMEOUT |
) |
Port map( |
-- request signals |
arp_req_req => arp_req_req_int, |
arp_req_rslt => arp_req_rslt_int, |
-- rx signals |
data_in_clk => rx_clk, |
reset => reset, |
data_in => mac_rx_tdata, |
data_in_valid => mac_rx_tvalid, |
data_in_last => mac_rx_tlast, |
-- tx signals |
mac_tx_req => arp_mac_req, |
mac_tx_granted => arp_mac_grant, |
data_out_clk => tx_clk, |
data_out_ready => mac_tx_tready, |
data_out_valid => arp_mac_valid, |
data_out_first => arp_mac_first, |
data_out_last => arp_mac_last, |
data_out => arp_mac_data_out, |
-- system signals |
our_mac_address => our_mac_address, |
our_ip_address => our_ip_address, |
control => control.arp_controls, |
req_count => arp_pkt_count |
); |
|
|
------------------------------------------------------------------------------ |
-- Instantiate the TX Arbitrator |
------------------------------------------------------------------------------ |
mac_tx_arb : tx_arbitrator |
Port map( |
clk => tx_clk, |
reset => reset, |
|
req_1 => ip_mac_req, |
grant_1 => ip_mac_grant, |
data_1 => ip_mac_data_out, |
valid_1 => ip_mac_valid, |
first_1 => ip_mac_first, |
last_1 => ip_mac_last, |
|
req_2 => arp_mac_req, |
grant_2 => arp_mac_grant, |
data_2 => arp_mac_data_out, |
valid_2 => arp_mac_valid, |
first_2 => arp_mac_first, |
last_2 => arp_mac_last, |
|
data => mac_tx_tdata_int, |
valid => mac_tx_tvalid_int, |
first => mac_tx_tfirst_int, |
last => mac_tx_tlast_int |
); |
|
end structural; |
|
/udp_ip_stack/tags/v1.3/rtl/vhdl/IPv4_TX.vhd
0,0 → 1,535
---------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: Peter Fall |
-- |
-- Create Date: 16:20:42 06/01/2011 |
-- Design Name: |
-- Module Name: IPv4_TX - Behavioral |
-- Project Name: |
-- Target Devices: |
-- Tool versions: |
-- Description: |
-- handle simple IP TX |
-- doesnt handle segmentation |
-- dest MAC addr resolution through ARP layer |
-- Handle IPv4 protocol |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Revision 0.02 - fixed up setting of tx_result control defaults |
-- Revision 0.03 - Added data_out_first |
-- Revision 0.04 - Added handling of broadcast address |
-- Additional Comments: |
-- |
---------------------------------------------------------------------------------- |
library IEEE; |
use IEEE.STD_LOGIC_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.axi.all; |
use work.ipv4_types.all; |
use work.arp_types.all; |
|
entity IPv4_TX is |
Port ( |
-- IP Layer signals |
ip_tx_start : in std_logic; |
ip_tx : in ipv4_tx_type; -- IP tx cxns |
ip_tx_result : out std_logic_vector (1 downto 0); -- tx status (changes during transmission) |
ip_tx_data_out_ready : out std_logic; -- indicates IP TX is ready to take data |
|
-- system signals |
clk : in STD_LOGIC; -- same clock used to clock mac data and ip data |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
our_mac_address : in std_logic_vector (47 downto 0); |
-- ARP lookup signals |
arp_req_req : out arp_req_req_type; |
arp_req_rslt : in arp_req_rslt_type; |
-- MAC layer TX signals |
mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx) |
mac_tx_granted : in std_logic; -- indicates that access to channel has been granted |
mac_data_out_ready : in std_logic; -- indicates system ready to consume data |
mac_data_out_valid : out std_logic; -- indicates data out is valid |
mac_data_out_first : out std_logic; -- with data out valid indicates the first byte of a frame |
mac_data_out_last : out std_logic; -- with data out valid indicates the last byte of a frame |
mac_data_out : out std_logic_vector (7 downto 0) -- ethernet frame (from dst mac addr through to last byte of frame) |
); |
end IPv4_TX; |
|
architecture Behavioral of IPv4_TX is |
|
type tx_state_type is ( |
IDLE, |
WAIT_MAC, -- waiting for response from ARP for mac lookup |
WAIT_CHN, -- waiting for tx access to MAC channel |
SEND_ETH_HDR, -- sending the ethernet header |
SEND_IP_HDR, -- sending the IP header |
SEND_USER_DATA -- sending the users data |
); |
|
type crc_state_type is (IDLE,TOT_LEN,ID,FLAGS,TTL,CKS,SAH,SAL,DAH,DAL,FINAL,WAIT_END); |
|
type count_mode_type is (RST, INCR, HOLD); |
type settable_cnt_type is (RST, SET, INCR, HOLD); |
type set_clr_type is (SET, CLR, HOLD); |
|
-- Configuration |
|
constant IP_TTL : std_logic_vector (7 downto 0) := x"80"; |
|
-- TX state variables |
signal tx_state : tx_state_type; |
signal tx_count : unsigned (11 downto 0); |
signal tx_result_reg : std_logic_vector (1 downto 0); |
signal tx_mac : std_logic_vector (47 downto 0); |
signal tx_mac_chn_reqd : std_logic; |
signal tx_hdr_cks : std_logic_vector (23 downto 0); |
signal mac_lookup_req : std_logic; |
signal crc_state : crc_state_type; |
signal arp_req_ip_reg : std_logic_vector (31 downto 0); |
signal mac_data_out_ready_reg : std_logic; |
|
-- tx control signals |
signal next_tx_state : tx_state_type; |
signal set_tx_state : std_logic; |
signal next_tx_result : std_logic_vector (1 downto 0); |
signal set_tx_result : std_logic; |
signal tx_mac_value : std_logic_vector (47 downto 0); |
signal set_tx_mac : std_logic; |
signal tx_count_val : unsigned (11 downto 0); |
signal tx_count_mode : settable_cnt_type; |
signal tx_data : std_logic_vector (7 downto 0); |
signal set_last : std_logic; |
signal set_chn_reqd : set_clr_type; |
signal set_mac_lku_req : set_clr_type; |
signal tx_data_valid : std_logic; -- indicates whether data is valid to tx or not |
|
-- tx temp signals |
signal total_length : std_logic_vector (15 downto 0); -- computed combinatorially from header size |
|
|
FUNCTION inv_if_one(s1:std_logic_vector;en:std_logic) return std_logic_vector is |
--this function inverts all the bits of a vector if |
--'en' is '1'. |
VARIABLE Z : std_logic_vector(s1'high downto s1'low); |
BEGIN |
FOR i IN (s1'low) to s1'high LOOP |
Z(i) := en XOR s1(i); |
END LOOP; |
RETURN Z; |
END inv_if_one; -- end function |
|
|
-- IP datagram header format |
-- |
-- 0 4 8 16 19 24 31 |
-- -------------------------------------------------------------------------------------------- |
-- | Version | *Header | Service Type | Total Length including header | |
-- | (4) | Length | (ignored) | (in bytes) | |
-- -------------------------------------------------------------------------------------------- |
-- | Identification | Flags | Fragment Offset | |
-- | | | (in 32 bit words) | |
-- -------------------------------------------------------------------------------------------- |
-- | Time To Live | Protocol | Header Checksum | |
-- | (ignored) | | | |
-- -------------------------------------------------------------------------------------------- |
-- | Source IP Address | |
-- | | |
-- -------------------------------------------------------------------------------------------- |
-- | Destination IP Address | |
-- | | |
-- -------------------------------------------------------------------------------------------- |
-- | Options (if any - ignored) | Padding | |
-- | | (if needed) | |
-- -------------------------------------------------------------------------------------------- |
-- | Data | |
-- | | |
-- -------------------------------------------------------------------------------------------- |
-- | .... | |
-- | | |
-- -------------------------------------------------------------------------------------------- |
-- |
-- * - in 32 bit words |
|
begin |
----------------------------------------------------------------------- |
-- combinatorial process to implement FSM and determine control signals |
----------------------------------------------------------------------- |
|
tx_combinatorial : process( |
-- input signals |
ip_tx_start, ip_tx, clk, our_ip_address, our_mac_address, arp_req_rslt, |
mac_tx_granted, mac_data_out_ready, |
-- state variables |
tx_state, tx_count, tx_result_reg, tx_mac, tx_mac_chn_reqd, |
mac_lookup_req, tx_hdr_cks, arp_req_ip_reg, mac_data_out_ready_reg, |
-- control signals |
next_tx_state, set_tx_state, next_tx_result, set_tx_result, tx_mac_value, set_tx_mac, tx_count_mode, |
tx_data, set_last, set_chn_reqd, set_mac_lku_req, total_length, |
tx_data_valid, tx_count_val |
) |
begin |
-- set output followers |
ip_tx_result <= tx_result_reg; |
mac_tx_req <= tx_mac_chn_reqd; |
arp_req_req.lookup_req <= mac_lookup_req; |
arp_req_req.ip <= arp_req_ip_reg; |
|
-- set initial values for combinatorial outputs |
mac_data_out_first <= '0'; |
|
case tx_state is |
when SEND_ETH_HDR | SEND_IP_HDR => |
mac_data_out <= tx_data; |
tx_data_valid <= mac_data_out_ready; -- generated internally |
mac_data_out_last <= set_last; |
|
when SEND_USER_DATA => |
mac_data_out <= ip_tx.data.data_out; |
tx_data_valid <= ip_tx.data.data_out_valid; |
mac_data_out_last <= ip_tx.data.data_out_last; |
|
when others => |
mac_data_out <= (others => '0'); |
tx_data_valid <= '0'; -- not transmitting during this phase |
mac_data_out_last <= '0'; |
end case; |
|
mac_data_out_valid <= tx_data_valid and mac_data_out_ready; |
|
-- set signal defaults |
next_tx_state <= IDLE; |
set_tx_state <= '0'; |
tx_count_mode <= HOLD; |
tx_data <= x"00"; |
set_last <= '0'; |
set_tx_mac <= '0'; |
set_chn_reqd <= HOLD; |
set_mac_lku_req <= HOLD; |
next_tx_result <= IPTX_RESULT_NONE; |
set_tx_result <= '0'; |
tx_count_val <= (others => '0'); |
tx_mac_value <= (others => '0'); |
|
-- set temp signals |
total_length <= std_logic_vector(unsigned(ip_tx.hdr.data_length) + 20); -- total length = user data length + header length (bytes) |
|
-- TX FSM |
case tx_state is |
when IDLE => |
ip_tx_data_out_ready <= '0'; -- in this state, we are unable to accept user data for tx |
tx_count_mode <= RST; |
set_chn_reqd <= CLR; |
if ip_tx_start = '1' then |
-- check header count for error if too high |
if unsigned(ip_tx.hdr.data_length) > 1480 then |
next_tx_result <= IPTX_RESULT_ERR; |
set_tx_result <= '1'; |
else |
next_tx_result <= IPTX_RESULT_SENDING; |
set_tx_result <= '1'; |
|
-- TODO - check if we already have the mac addr for this ip, if so, bypass the WAIT_MAC state |
|
if ip_tx.hdr.dst_ip_addr = IP_BC_ADDR then |
-- for IP broadcast, dont need to look up the MAC addr |
tx_mac_value <= MAC_BC_ADDR; |
set_tx_mac <= '1'; |
next_tx_state <= WAIT_CHN; |
set_tx_state <= '1'; |
else |
-- need to req the mac address for this ip |
set_mac_lku_req <= SET; |
next_tx_state <= WAIT_MAC; |
set_tx_state <= '1'; |
end if; |
end if; |
else |
set_mac_lku_req <= CLR; |
end if; |
|
when WAIT_MAC => |
ip_tx_data_out_ready <= '0'; -- in this state, we are unable to accept user data for tx |
set_mac_lku_req <= CLR; -- clear the request - will have been latched in the ARP layer |
if arp_req_rslt.got_mac = '1' then |
-- save the MAC we got back from the ARP lookup |
tx_mac_value <= arp_req_rslt.mac; |
set_tx_mac <= '1'; |
set_chn_reqd <= SET; |
-- check for optimise when already have the channel |
if mac_tx_granted = '1' then |
-- ready to send data |
next_tx_state <= SEND_ETH_HDR; |
set_tx_state <= '1'; |
else |
next_tx_state <= WAIT_CHN; |
set_tx_state <= '1'; |
end if; |
elsif arp_req_rslt.got_err = '1' then |
set_mac_lku_req <= CLR; |
next_tx_result <= IPTX_RESULT_ERR; |
set_tx_result <= '1'; |
next_tx_state <= IDLE; |
set_tx_state <= '1'; |
end if; |
|
when WAIT_CHN => |
ip_tx_data_out_ready <= '0'; -- in this state, we are unable to accept user data for tx |
if mac_tx_granted = '1' then |
-- ready to send data |
next_tx_state <= SEND_ETH_HDR; |
set_tx_state <= '1'; |
end if; |
-- probably should handle a timeout here |
|
when SEND_ETH_HDR => |
ip_tx_data_out_ready <= '0'; -- in this state, we are unable to accept user data for tx |
if mac_data_out_ready = '1' then |
if tx_count = x"00d" then |
tx_count_mode <= RST; |
next_tx_state <= SEND_IP_HDR; |
set_tx_state <= '1'; |
else |
tx_count_mode <= INCR; |
end if; |
case tx_count is |
when x"000" => |
mac_data_out_first <= mac_data_out_ready; |
tx_data <= tx_mac (47 downto 40); -- trg = mac from ARP lookup |
|
when x"001" => tx_data <= tx_mac (39 downto 32); |
when x"002" => tx_data <= tx_mac (31 downto 24); |
when x"003" => tx_data <= tx_mac (23 downto 16); |
when x"004" => tx_data <= tx_mac (15 downto 8); |
when x"005" => tx_data <= tx_mac (7 downto 0); |
when x"006" => tx_data <= our_mac_address (47 downto 40); -- src = our mac |
when x"007" => tx_data <= our_mac_address (39 downto 32); |
when x"008" => tx_data <= our_mac_address (31 downto 24); |
when x"009" => tx_data <= our_mac_address (23 downto 16); |
when x"00a" => tx_data <= our_mac_address (15 downto 8); |
when x"00b" => tx_data <= our_mac_address (7 downto 0); |
when x"00c" => tx_data <= x"08"; -- pkt type = 0800 : IP |
when x"00d" => tx_data <= x"00"; |
when others => |
-- shouldnt get here - handle as error |
next_tx_result <= IPTX_RESULT_ERR; |
set_tx_result <= '1'; |
next_tx_state <= IDLE; |
set_tx_state <= '1'; |
end case; |
end if; |
|
when SEND_IP_HDR => |
ip_tx_data_out_ready <= '0'; -- in this state, we are unable to accept user data for tx |
if mac_data_out_ready = '1' then |
if tx_count = x"013" then |
tx_count_val <= x"001"; |
tx_count_mode <= SET; |
next_tx_state <= SEND_USER_DATA; |
set_tx_state <= '1'; |
else |
tx_count_mode <= INCR; |
end if; |
case tx_count is |
when x"000" => tx_data <= x"45"; -- v4, 5 words in hdr |
when x"001" => tx_data <= x"00"; -- service type |
when x"002" => tx_data <= total_length (15 downto 8); -- total length |
when x"003" => tx_data <= total_length (7 downto 0); |
when x"004" => tx_data <= x"00"; -- identification |
when x"005" => tx_data <= x"00"; |
when x"006" => tx_data <= x"00"; -- flags and fragment offset |
when x"007" => tx_data <= x"00"; |
when x"008" => tx_data <= IP_TTL; -- TTL |
when x"009" => tx_data <= ip_tx.hdr.protocol; -- protocol |
when x"00a" => tx_data <= tx_hdr_cks (15 downto 8); -- HDR checksum |
when x"00b" => tx_data <= tx_hdr_cks (7 downto 0); -- HDR checksum |
when x"00c" => tx_data <= our_ip_address (31 downto 24); -- src ip |
when x"00d" => tx_data <= our_ip_address (23 downto 16); |
when x"00e" => tx_data <= our_ip_address (15 downto 8); |
when x"00f" => tx_data <= our_ip_address (7 downto 0); |
when x"010" => tx_data <= ip_tx.hdr.dst_ip_addr (31 downto 24); -- dst ip |
when x"011" => tx_data <= ip_tx.hdr.dst_ip_addr (23 downto 16); |
when x"012" => tx_data <= ip_tx.hdr.dst_ip_addr (15 downto 8); |
when x"013" => tx_data <= ip_tx.hdr.dst_ip_addr (7 downto 0); |
when others => |
-- shouldnt get here - handle as error |
next_tx_result <= IPTX_RESULT_ERR; |
set_tx_result <= '1'; |
next_tx_state <= IDLE; |
set_tx_state <= '1'; |
end case; |
end if; |
|
when SEND_USER_DATA => |
ip_tx_data_out_ready <= mac_data_out_ready and mac_data_out_ready_reg; -- in this state, we are always ready to accept user data for tx |
if mac_data_out_ready = '1' then |
if ip_tx.data.data_out_valid = '1' or tx_count = x"000" then |
-- only increment if ready and valid has been subsequently established, otherwise data count moves on too fast |
if unsigned(tx_count) = unsigned(ip_tx.hdr.data_length) then |
set_last <= '1'; |
set_chn_reqd <= CLR; |
tx_data <= ip_tx.data.data_out; |
next_tx_result <= IPTX_RESULT_SENT; |
set_tx_result <= '1'; |
next_tx_state <= IDLE; |
set_tx_state <= '1'; |
else |
tx_count_mode <= INCR; |
tx_data <= ip_tx.data.data_out; |
end if; |
end if; |
end if; |
|
end case; |
end process; |
|
----------------------------------------------------------------------------- |
-- sequential process to action control signals and change states and outputs |
----------------------------------------------------------------------------- |
|
tx_sequential : process (clk,reset,mac_data_out_ready_reg) |
begin |
if rising_edge(clk) then |
mac_data_out_ready_reg <= mac_data_out_ready; |
else |
mac_data_out_ready_reg <= mac_data_out_ready_reg; |
end if; |
|
if rising_edge(clk) then |
if reset = '1' then |
-- reset state variables |
tx_state <= IDLE; |
tx_count <= x"000"; |
tx_result_reg <= IPTX_RESULT_NONE; |
tx_mac <= (others => '0'); |
tx_mac_chn_reqd <= '0'; |
mac_lookup_req <= '0'; |
|
else |
-- Next tx_state processing |
if set_tx_state = '1' then |
tx_state <= next_tx_state; |
else |
tx_state <= tx_state; |
end if; |
|
-- tx result processing |
if set_tx_result = '1' then |
tx_result_reg <= next_tx_result; |
else |
tx_result_reg <= tx_result_reg; |
end if; |
|
-- control arp lookup request |
case set_mac_lku_req is |
when SET => |
arp_req_ip_reg <= ip_tx.hdr.dst_ip_addr; |
mac_lookup_req <= '1'; |
|
when CLR => |
mac_lookup_req <= '0'; |
arp_req_ip_reg <= arp_req_ip_reg; |
|
when HOLD => |
mac_lookup_req <= mac_lookup_req; |
arp_req_ip_reg <= arp_req_ip_reg; |
end case; |
|
-- save MAC |
if set_tx_mac = '1' then |
tx_mac <= tx_mac_value; |
else |
tx_mac <= tx_mac; |
end if; |
|
-- control access request to mac tx chn |
case set_chn_reqd is |
when SET => tx_mac_chn_reqd <= '1'; |
when CLR => tx_mac_chn_reqd <= '0'; |
when HOLD => tx_mac_chn_reqd <= tx_mac_chn_reqd; |
end case; |
|
-- tx_count processing |
case tx_count_mode is |
when RST => tx_count <= x"000"; |
when SET => tx_count <= tx_count_val; |
when INCR => tx_count <= tx_count + 1; |
when HOLD => tx_count <= tx_count; |
end case; |
|
end if; |
end if; |
end process; |
|
----------------------------------------------------------------------------- |
-- Process to calculate CRC in parallel with pkt out processing |
-- this process must yield a valid CRC before it is required to be used in the hdr |
----------------------------------------------------------------------------- |
|
crc : process (clk,reset) |
begin |
if rising_edge(clk) then |
case crc_state is |
when IDLE => |
if ip_tx_start = '1' then |
tx_hdr_cks <= x"004500"; -- vers & hdr len & service |
crc_state <= TOT_LEN; |
end if; |
|
when TOT_LEN => |
tx_hdr_cks <= std_logic_vector (unsigned(tx_hdr_cks) + unsigned(total_length)); |
crc_state <= ID; |
|
when ID => |
tx_hdr_cks <= tx_hdr_cks; |
crc_state <= FLAGS; |
|
when FLAGS => |
tx_hdr_cks <= tx_hdr_cks; |
crc_state <= TTL; |
|
when TTL => |
tx_hdr_cks <= std_logic_vector (unsigned(tx_hdr_cks) + unsigned(IP_TTL & ip_tx.hdr.protocol)); |
crc_state <= CKS; |
|
when CKS => |
tx_hdr_cks <= tx_hdr_cks; |
crc_state <= SAH; |
|
when SAH => |
tx_hdr_cks <= std_logic_vector (unsigned(tx_hdr_cks) + unsigned(our_ip_address(31 downto 16))); |
crc_state <= SAL; |
|
when SAL => |
tx_hdr_cks <= std_logic_vector (unsigned(tx_hdr_cks) + unsigned(our_ip_address(15 downto 0))); |
crc_state <= DAH; |
|
when DAH => |
tx_hdr_cks <= std_logic_vector (unsigned(tx_hdr_cks) + unsigned(ip_tx.hdr.dst_ip_addr(31 downto 16))); |
crc_state <= DAL; |
|
when DAL => |
tx_hdr_cks <= std_logic_vector (unsigned(tx_hdr_cks) + unsigned(ip_tx.hdr.dst_ip_addr(15 downto 0))); |
crc_state <= FINAL; |
|
when FINAL => |
tx_hdr_cks <= inv_if_one(std_logic_vector (unsigned(tx_hdr_cks) + unsigned(tx_hdr_cks(23 downto 16))),'1'); |
crc_state <= WAIT_END; |
|
when WAIT_END => |
tx_hdr_cks <= tx_hdr_cks; |
if ip_tx_start = '0' then |
crc_state <= IDLE; |
else |
crc_state <= WAIT_END; |
end if; |
|
|
end case; |
end if; |
end process; |
|
|
end Behavioral; |
|
/udp_ip_stack/tags/v1.3/rtl/vhdl/UDP_Complete_nomac.vhd
0,0 → 1,241
---------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: |
-- |
-- Create Date: 09:38:49 06/13/2011 |
-- Design Name: |
-- Module Name: UDP_Complete_nomac - Behavioral |
-- Project Name: |
-- Target Devices: |
-- Tool versions: |
-- Description: |
-- |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Revision 0.02 - separated RX and TX clocks |
-- Revision 0.03 - Added mac_tx_tfirst |
-- Additional Comments: |
-- |
---------------------------------------------------------------------------------- |
library IEEE; |
use IEEE.STD_LOGIC_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.axi.all; |
use work.ipv4_types.all; |
use work.arp_types.all; |
|
entity UDP_Complete_nomac is |
generic ( |
CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr |
ARP_TIMEOUT : integer := 60 -- ARP response timeout (s) |
); |
Port ( |
-- UDP TX signals |
udp_tx_start : in std_logic; -- indicates req to tx UDP |
udp_txi : in udp_tx_type; -- UDP tx cxns |
udp_tx_result : out std_logic_vector (1 downto 0);-- tx status (changes during transmission) |
udp_tx_data_out_ready: out std_logic; -- indicates udp_tx is ready to take data |
-- UDP RX signals |
udp_rx_start : out std_logic; -- indicates receipt of udp header |
udp_rxo : out udp_rx_type; |
-- IP RX signals |
ip_rx_hdr : out ipv4_rx_header_type; |
-- system signals |
rx_clk : in STD_LOGIC; |
tx_clk : in STD_LOGIC; |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
our_mac_address : in std_logic_vector (47 downto 0); |
control : in udp_control_type; |
-- status signals |
arp_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- count of arp pkts received |
ip_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us |
-- MAC Transmitter |
mac_tx_tdata : out std_logic_vector(7 downto 0); -- data byte to tx |
mac_tx_tvalid : out std_logic; -- tdata is valid |
mac_tx_tready : in std_logic; -- mac is ready to accept data |
mac_tx_tfirst : out std_logic; -- indicates first byte of frame |
mac_tx_tlast : out std_logic; -- indicates last byte of frame |
-- MAC Receiver |
mac_rx_tdata : in std_logic_vector(7 downto 0); -- data byte received |
mac_rx_tvalid : in std_logic; -- indicates tdata is valid |
mac_rx_tready : out std_logic; -- tells mac that we are ready to take data |
mac_rx_tlast : in std_logic -- indicates last byte of the trame |
); |
end UDP_Complete_nomac; |
|
|
architecture structural of UDP_Complete_nomac is |
|
------------------------------------------------------------------------------ |
-- Component Declaration for UDP TX |
------------------------------------------------------------------------------ |
|
COMPONENT UDP_TX |
PORT( |
-- UDP Layer signals |
udp_tx_start : in std_logic; -- indicates req to tx UDP |
udp_txi : in udp_tx_type; -- UDP tx cxns |
udp_tx_result : out std_logic_vector (1 downto 0);-- tx status (changes during transmission) |
udp_tx_data_out_ready: out std_logic; -- indicates udp_tx is ready to take data |
-- system signals |
clk : in STD_LOGIC; -- same clock used to clock mac data and ip data |
reset : in STD_LOGIC; |
-- IP layer TX signals |
ip_tx_start : out std_logic; |
ip_tx : out ipv4_tx_type; -- IP tx cxns |
ip_tx_result : in std_logic_vector (1 downto 0); -- tx status (changes during transmission) |
ip_tx_data_out_ready : in std_logic -- indicates IP TX is ready to take data |
); |
END COMPONENT; |
|
------------------------------------------------------------------------------ |
-- Component Declaration for UDP RX |
------------------------------------------------------------------------------ |
|
COMPONENT UDP_RX |
PORT( |
-- UDP Layer signals |
udp_rx_start : out std_logic; -- indicates receipt of udp header |
udp_rxo : out udp_rx_type; |
-- system signals |
clk : in STD_LOGIC; |
reset : in STD_LOGIC; |
-- IP layer RX signals |
ip_rx_start : in std_logic; -- indicates receipt of ip header |
ip_rx : in ipv4_rx_type |
); |
END COMPONENT; |
|
------------------------------------------------------------------------------ |
-- Component Declaration for the IP layer |
------------------------------------------------------------------------------ |
|
component IP_complete_nomac |
generic ( |
CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr |
ARP_TIMEOUT : integer := 60 -- ARP response timeout (s) |
); |
Port ( |
-- IP Layer signals |
ip_tx_start : in std_logic; |
ip_tx : in ipv4_tx_type; -- IP tx cxns |
ip_tx_result : out std_logic_vector (1 downto 0); -- tx status (changes during transmission) |
ip_tx_data_out_ready : out std_logic; -- indicates IP TX is ready to take data |
ip_rx_start : out std_logic; -- indicates receipt of ip frame. |
ip_rx : out ipv4_rx_type; |
-- system signals |
rx_clk : in STD_LOGIC; |
tx_clk : in STD_LOGIC; |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
our_mac_address : in std_logic_vector (47 downto 0); |
control : in ip_control_type; |
-- status signals |
arp_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- count of arp pkts received |
ip_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us |
-- MAC Transmitter |
mac_tx_tdata : out std_logic_vector(7 downto 0); -- data byte to tx |
mac_tx_tvalid : out std_logic; -- tdata is valid |
mac_tx_tready : in std_logic; -- mac is ready to accept data |
mac_tx_tfirst : out std_logic; -- indicates first byte of frame |
mac_tx_tlast : out std_logic; -- indicates last byte of frame |
-- MAC Receiver |
mac_rx_tdata : in std_logic_vector(7 downto 0); -- data byte received |
mac_rx_tvalid : in std_logic; -- indicates tdata is valid |
mac_rx_tready : out std_logic; -- tells mac that we are ready to take data |
mac_rx_tlast : in std_logic -- indicates last byte of the trame |
); |
end component; |
|
-- IP TX connectivity |
signal ip_tx_int : ipv4_tx_type; |
signal ip_tx_start_int : std_logic; |
signal ip_tx_result_int : std_logic_vector (1 downto 0); |
signal ip_tx_data_out_ready_int : std_logic; |
|
-- IP RX connectivity |
signal ip_rx_int : ipv4_rx_type; |
signal ip_rx_start_int : std_logic := '0'; |
|
|
begin |
|
-- output followers |
ip_rx_hdr <= ip_rx_int.hdr; |
|
-- Instantiate the UDP TX block |
udp_tx_block: UDP_TX |
PORT MAP ( |
-- UDP Layer signals |
udp_tx_start => udp_tx_start, |
udp_txi => udp_txi, |
udp_tx_result => udp_tx_result, |
udp_tx_data_out_ready=> udp_tx_data_out_ready, |
-- system signals |
clk => tx_clk, |
reset => reset, |
-- IP layer TX signals |
ip_tx_start => ip_tx_start_int, |
ip_tx => ip_tx_int, |
ip_tx_result => ip_tx_result_int, |
ip_tx_data_out_ready => ip_tx_data_out_ready_int |
); |
|
-- Instantiate the UDP RX block |
udp_rx_block: UDP_RX PORT MAP ( |
-- UDP Layer signals |
udp_rxo => udp_rxo, |
udp_rx_start => udp_rx_start, |
-- system signals |
clk => rx_clk, |
reset => reset, |
-- IP layer RX signals |
ip_rx_start => ip_rx_start_int, |
ip_rx => ip_rx_int |
); |
|
------------------------------------------------------------------------------ |
-- Instantiate the IP layer |
------------------------------------------------------------------------------ |
IP_block : IP_complete_nomac |
generic map ( |
CLOCK_FREQ => CLOCK_FREQ, |
ARP_TIMEOUT => ARP_TIMEOUT |
) |
PORT MAP ( |
-- IP interface |
ip_tx_start => ip_tx_start_int, |
ip_tx => ip_tx_int, |
ip_tx_result => ip_tx_result_int, |
ip_tx_data_out_ready => ip_tx_data_out_ready_int, |
ip_rx_start => ip_rx_start_int, |
ip_rx => ip_rx_int, |
-- System interface |
rx_clk => rx_clk, |
tx_clk => tx_clk, |
reset => reset, |
our_ip_address => our_ip_address, |
our_mac_address => our_mac_address, |
control => control.ip_controls, |
-- status signals |
arp_pkt_count => arp_pkt_count, |
ip_pkt_count => ip_pkt_count, |
-- MAC Transmitter |
mac_tx_tdata => mac_tx_tdata, |
mac_tx_tvalid => mac_tx_tvalid, |
mac_tx_tready => mac_tx_tready, |
mac_tx_tfirst => mac_tx_tfirst, |
mac_tx_tlast => mac_tx_tlast, |
-- MAC Receiver |
mac_rx_tdata => mac_rx_tdata, |
mac_rx_tvalid => mac_rx_tvalid, |
mac_rx_tready => mac_rx_tready, |
mac_rx_tlast => mac_rx_tlast |
); |
|
|
end structural; |
|
/udp_ip_stack/tags/v1.3/rtl/vhdl/IPv4_RX.vhd
0,0 → 1,507
---------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: Peter Fall |
-- |
-- Create Date: 16:20:42 06/01/2011 |
-- Design Name: |
-- Module Name: IPv4_RX - Behavioral |
-- Project Name: |
-- Target Devices: |
-- Tool versions: |
-- Description: |
-- handle simple IP RX |
-- doesnt handle reassembly |
-- checks and filters for IP protocol |
-- checks and filters for IP addr |
-- Handle IPv4 protocol |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Revision 0.02 - Improved error handling |
-- Revision 0.03 - Added handling of broadcast address |
-- Additional Comments: |
-- |
---------------------------------------------------------------------------------- |
library IEEE; |
use IEEE.STD_LOGIC_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.axi.all; |
use work.ipv4_types.all; |
use work.arp_types.all; |
|
entity IPv4_RX is |
Port ( |
-- IP Layer signals |
ip_rx : out ipv4_rx_type; |
ip_rx_start : out std_logic; -- indicates receipt of ip frame. |
-- system signals |
clk : in STD_LOGIC; -- same clock used to clock mac data and ip data |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
rx_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us |
-- MAC layer RX signals |
mac_data_in : in STD_LOGIC_VECTOR (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame) |
mac_data_in_valid : in STD_LOGIC; -- indicates data_in valid on clock |
mac_data_in_last : in STD_LOGIC -- indicates last data in frame |
); |
end IPv4_RX; |
|
architecture Behavioral of IPv4_RX is |
|
type rx_state_type is (IDLE, ETH_HDR, IP_HDR, USER_DATA, WAIT_END, ERR); |
|
type rx_event_type is (NO_EVENT,DATA); |
type count_mode_type is (RST, INCR, HOLD); |
type settable_count_mode_type is (RST, INCR, SET_VAL, HOLD); |
type set_clr_type is (SET, CLR, HOLD); |
|
|
-- state variables |
signal rx_state : rx_state_type; |
signal rx_count : unsigned (15 downto 0); |
signal src_ip : std_logic_vector (31 downto 0); -- src IP captured from input |
signal dst_ip : std_logic_vector (23 downto 0); -- 1st 3 bytes of dst IP captured from input |
signal is_broadcast_reg : std_logic; |
signal protocol : std_logic_vector (7 downto 0); -- src protocol captured from input |
signal data_len : std_logic_vector (15 downto 0); -- src data length captured from input |
signal ip_rx_start_reg : std_logic; -- indicates start of user data |
signal hdr_valid_reg : std_logic; -- indicates that hdr data is valid |
signal frame_err_cnt : unsigned (7 downto 0); -- number of frame errors |
signal error_code_reg : std_logic_vector (3 downto 0); |
signal rx_pkt_counter : unsigned (7 downto 0); -- number of rx frames received for us |
|
-- rx control signals |
signal next_rx_state : rx_state_type; |
signal set_rx_state : std_logic; |
signal rx_event : rx_event_type; |
signal rx_count_mode : settable_count_mode_type; |
signal set_dst_ip3 : std_logic; |
signal set_dst_ip2 : std_logic; |
signal set_dst_ip1 : std_logic; |
signal set_ip3 : std_logic; |
signal set_ip2 : std_logic; |
signal set_ip1 : std_logic; |
signal set_ip0 : std_logic; |
signal set_protocol : std_logic; |
signal set_len_H : std_logic; |
signal set_len_L : std_logic; |
signal set_ip_rx_start : set_clr_type; |
signal set_hdr_valid : set_clr_type; |
signal set_frame_err_cnt: count_mode_type; |
signal dataval : std_logic_vector (7 downto 0); |
signal rx_count_val : unsigned (15 downto 0); |
signal set_error_code : std_logic; |
signal error_code_val : std_logic_vector (3 downto 0); |
signal set_pkt_cnt : count_mode_type; |
signal set_data_last : std_logic; |
signal dst_ip_rx : std_logic_vector (31 downto 0); |
signal set_is_broadcast : set_clr_type; |
|
|
-- IP datagram header format |
-- |
-- 0 4 8 16 19 24 31 |
-- -------------------------------------------------------------------------------------------- |
-- | Version | *Header | Service Type | Total Length including header | |
-- | (4) | Length | (ignored) | (in bytes) | |
-- -------------------------------------------------------------------------------------------- |
-- | Identification | Flags | Fragment Offset | |
-- | | | (in 32 bit words) | |
-- -------------------------------------------------------------------------------------------- |
-- | Time To Live | Protocol | Header Checksum | |
-- | (ignored) | | | |
-- -------------------------------------------------------------------------------------------- |
-- | Source IP Address | |
-- | | |
-- -------------------------------------------------------------------------------------------- |
-- | Destination IP Address | |
-- | | |
-- -------------------------------------------------------------------------------------------- |
-- | Options (if any - ignored) | Padding | |
-- | | (if needed) | |
-- -------------------------------------------------------------------------------------------- |
-- | Data | |
-- | | |
-- -------------------------------------------------------------------------------------------- |
-- | .... | |
-- | | |
-- -------------------------------------------------------------------------------------------- |
-- |
-- * - in 32 bit words |
|
begin |
|
----------------------------------------------------------------------- |
-- combinatorial process to implement FSM and determine control signals |
----------------------------------------------------------------------- |
|
rx_combinatorial : process ( |
-- input signals |
mac_data_in, mac_data_in_valid, mac_data_in_last, our_ip_address, |
-- state variables |
rx_state, rx_count, src_ip, dst_ip, protocol, data_len, ip_rx_start_reg, hdr_valid_reg, |
frame_err_cnt, error_code_reg, rx_pkt_counter, is_broadcast_reg, |
-- control signals |
next_rx_state, set_rx_state, rx_event, rx_count_mode, |
set_ip3, set_ip2, set_ip1, set_ip0, set_protocol, set_len_H, set_len_L, |
set_dst_ip3, set_dst_ip2, set_dst_ip1, |
set_ip_rx_start, set_hdr_valid, set_frame_err_cnt, dataval, rx_count_val, |
set_error_code, error_code_val, set_pkt_cnt, set_data_last, dst_ip_rx, set_is_broadcast |
) |
begin |
-- set output followers |
ip_rx_start <= ip_rx_start_reg; |
ip_rx.hdr.is_valid <= hdr_valid_reg; |
ip_rx.hdr.protocol <= protocol; |
ip_rx.hdr.data_length <= data_len; |
ip_rx.hdr.src_ip_addr <= src_ip; |
ip_rx.hdr.num_frame_errors <= std_logic_vector(frame_err_cnt); |
ip_rx.hdr.last_error_code <= error_code_reg; |
ip_rx.hdr.is_broadcast <= is_broadcast_reg; |
rx_pkt_count <= STD_LOGIC_VECTOR(rx_pkt_counter); |
|
-- transfer data upstream if in user data phase |
if rx_state = USER_DATA then |
ip_rx.data.data_in <= mac_data_in; |
ip_rx.data.data_in_valid <= mac_data_in_valid; |
ip_rx.data.data_in_last <= set_data_last; |
else |
ip_rx.data.data_in <= (others => '0'); |
ip_rx.data.data_in_valid <= '0'; |
ip_rx.data.data_in_last <= '0'; |
end if; |
|
-- set signal defaults |
next_rx_state <= IDLE; |
set_rx_state <= '0'; |
rx_event <= NO_EVENT; |
rx_count_mode <= HOLD; |
set_ip3 <= '0'; |
set_ip2 <= '0'; |
set_ip1 <= '0'; |
set_ip0 <= '0'; |
set_dst_ip3 <= '0'; |
set_dst_ip2 <= '0'; |
set_dst_ip1 <= '0'; |
set_protocol <= '0'; |
set_len_H <= '0'; |
set_len_L <= '0'; |
set_ip_rx_start <= HOLD; |
set_hdr_valid <= HOLD; |
set_frame_err_cnt <= HOLD; |
rx_count_val <= x"0000"; |
set_error_code <= '0'; |
error_code_val <= RX_EC_NONE; |
set_pkt_cnt <= HOLD; |
dataval <= (others => '0'); |
set_data_last <= '0'; |
dst_ip_rx <= (others => '0'); |
set_is_broadcast <= HOLD; |
|
-- determine event (if any) |
if mac_data_in_valid = '1' then |
rx_event <= DATA; |
dataval <= mac_data_in; |
end if; |
|
-- RX FSM |
case rx_state is |
when IDLE => |
rx_count_mode <= RST; |
case rx_event is |
when NO_EVENT => -- (nothing to do) |
when DATA => |
rx_count_mode <= INCR; |
set_hdr_valid <= CLR; |
next_rx_state <= ETH_HDR; |
set_rx_state <= '1'; |
end case; |
|
when ETH_HDR => |
case rx_event is |
when NO_EVENT => -- (nothing to do) |
when DATA => |
if rx_count = x"000d" then |
rx_count_mode <= RST; |
next_rx_state <= IP_HDR; |
set_rx_state <= '1'; |
else |
rx_count_mode <= INCR; |
end if; |
-- handle early frame termination |
if mac_data_in_last = '1' then |
error_code_val <= RX_EC_ET_ETH; |
set_error_code <= '1'; |
set_frame_err_cnt <= INCR; |
set_ip_rx_start <= CLR; |
set_data_last <= '1'; |
next_rx_state <= IDLE; |
set_rx_state <= '1'; |
else |
case rx_count is |
when x"000c" => |
if mac_data_in /= x"08" then -- ignore pkts that are not type=IP |
next_rx_state <= WAIT_END; |
set_rx_state <= '1'; |
end if; |
|
when x"000d" => |
if mac_data_in /= x"00" then -- ignore pkts that are not type=IP |
next_rx_state <= WAIT_END; |
set_rx_state <= '1'; |
end if; |
|
when others => -- ignore other bytes in eth header |
end case; |
end if; |
end case; |
|
when IP_HDR => |
case rx_event is |
when NO_EVENT => -- (nothing to do) |
when DATA => |
if rx_count = x"0013" then |
rx_count_val <= x"0001"; -- start counter at 1 |
rx_count_mode <= SET_VAL; |
else |
rx_count_mode <= INCR; |
end if; |
-- handle early frame termination |
if mac_data_in_last = '1' then |
error_code_val <= RX_EC_ET_IP; |
set_error_code <= '1'; |
set_frame_err_cnt <= INCR; |
set_ip_rx_start <= CLR; |
set_data_last <= '1'; |
next_rx_state <= IDLE; |
set_rx_state <= '1'; |
else |
case rx_count is |
when x"0000" => |
if mac_data_in /= x"45" then -- ignore pkts that are not v4 with 5 header words |
next_rx_state <= WAIT_END; |
set_rx_state <= '1'; |
end if; |
|
when x"0002" => set_len_H <= '1'; |
when x"0003" => set_len_L <= '1'; |
|
when x"0006" => |
if (mac_data_in(7) = '1') or (mac_data_in (4 downto 0) /= "00000") then |
-- ignore pkts that require reassembly (MF=1 or frag offst /= 0) |
next_rx_state <= WAIT_END; |
set_rx_state <= '1'; |
end if; |
|
when x"0007" => |
if mac_data_in /= x"00" then -- ignore pkts that require reassembly (frag offst /= 0) |
next_rx_state <= WAIT_END; |
set_rx_state <= '1'; |
end if; |
|
when x"0009" => set_protocol <= '1'; |
|
when x"000c" => set_ip3 <= '1'; |
when x"000d" => set_ip2 <= '1'; |
when x"000e" => set_ip1 <= '1'; |
when x"000f" => set_ip0 <= '1'; |
|
when x"0010" => set_dst_ip3 <= '1'; |
when x"0011" => set_dst_ip2 <= '1'; |
when x"0012" => set_dst_ip1 <= '1'; |
|
when x"0013" => |
-- now have the dst IP addr |
dst_ip_rx <= dst_ip & mac_data_in; |
if dst_ip_rx = IP_BC_ADDR then |
set_is_broadcast <= SET; |
else |
set_is_broadcast <= CLR; |
end if; |
set_hdr_valid <= SET; -- header values are now valid, although the pkt may not be for us |
|
if dst_ip_rx = our_ip_address or dst_ip_rx = IP_BC_ADDR then |
next_rx_state <= USER_DATA; |
set_pkt_cnt <= INCR; -- count another pkt received |
set_rx_state <= '1'; |
set_ip_rx_start <= SET; |
else |
next_rx_state <= WAIT_END; |
set_rx_state <= '1'; |
end if; |
|
when others => -- ignore other bytes in ip header |
end case; |
end if; |
end case; |
|
when USER_DATA => |
case rx_event is |
when NO_EVENT => -- (nothing to do) |
when DATA => |
-- note: data gets transfered upstream as part of "output followers" processing |
if rx_count = unsigned(data_len) then |
set_ip_rx_start <= CLR; |
rx_count_mode <= RST; |
set_data_last <= '1'; |
if mac_data_in_last = '1' then |
next_rx_state <= IDLE; |
set_ip_rx_start <= CLR; |
else |
next_rx_state <= WAIT_END; |
end if; |
set_rx_state <= '1'; |
else |
rx_count_mode <= INCR; |
-- check for early frame termination |
if mac_data_in_last = '1' then |
error_code_val <= RX_EC_ET_USER; |
set_error_code <= '1'; |
set_frame_err_cnt <= INCR; |
set_ip_rx_start <= CLR; |
next_rx_state <= IDLE; |
set_rx_state <= '1'; |
end if; |
end if; |
end case; |
|
when ERR => |
set_frame_err_cnt <= INCR; |
set_ip_rx_start <= CLR; |
if mac_data_in_last = '0' then |
set_data_last <= '1'; |
next_rx_state <= WAIT_END; |
set_rx_state <= '1'; |
else |
next_rx_state <= IDLE; |
set_rx_state <= '1'; |
end if; |
|
|
when WAIT_END => |
case rx_event is |
when NO_EVENT => -- (nothing to do) |
when DATA => |
if mac_data_in_last = '1' then |
set_data_last <= '1'; |
next_rx_state <= IDLE; |
set_rx_state <= '1'; |
set_ip_rx_start <= CLR; |
end if; |
end case; |
|
end case; |
|
end process; |
|
|
----------------------------------------------------------------------------- |
-- sequential process to action control signals and change states and outputs |
----------------------------------------------------------------------------- |
|
rx_sequential : process (clk,reset) |
begin |
if rising_edge(clk) then |
if reset = '1' then |
-- reset state variables |
rx_state <= IDLE; |
rx_count <= x"0000"; |
src_ip <= (others => '0'); |
dst_ip <= (others => '0'); |
protocol <= (others => '0'); |
data_len <= (others => '0'); |
ip_rx_start_reg <= '0'; |
hdr_valid_reg <= '0'; |
is_broadcast_reg <= '0'; |
frame_err_cnt <= (others => '0'); |
error_code_reg <= RX_EC_NONE; |
rx_pkt_counter <= x"00"; |
|
else |
-- Next rx_state processing |
if set_rx_state = '1' then |
rx_state <= next_rx_state; |
else |
rx_state <= rx_state; |
end if; |
|
-- rx_count processing |
case rx_count_mode is |
when RST => rx_count <= x"0000"; |
when INCR => rx_count <= rx_count + 1; |
when SET_VAL => rx_count <= rx_count_val; |
when HOLD => rx_count <= rx_count; |
end case; |
|
-- frame error count processing |
case set_frame_err_cnt is |
when RST => frame_err_cnt <= x"00"; |
when INCR => frame_err_cnt <= frame_err_cnt + 1; |
when HOLD => frame_err_cnt <= frame_err_cnt; |
end case; |
|
-- ip pkt processing |
case set_pkt_cnt is |
when RST => rx_pkt_counter <= x"00"; |
when INCR => rx_pkt_counter <= rx_pkt_counter + 1; |
when HOLD => rx_pkt_counter <= rx_pkt_counter; |
end case; |
|
-- source ip capture |
if (set_ip3 = '1') then src_ip(31 downto 24) <= dataval; end if; |
if (set_ip2 = '1') then src_ip(23 downto 16) <= dataval; end if; |
if (set_ip1 = '1') then src_ip(15 downto 8) <= dataval; end if; |
if (set_ip0 = '1') then src_ip(7 downto 0) <= dataval; end if; |
|
-- dst ip capture |
if (set_dst_ip3 = '1') then dst_ip(23 downto 16) <= dataval; end if; |
if (set_dst_ip2 = '1') then dst_ip(15 downto 8) <= dataval; end if; |
if (set_dst_ip1 = '1') then dst_ip(7 downto 0) <= dataval; end if; |
|
if (set_protocol = '1') then |
protocol <= dataval; |
else |
protocol <= protocol; |
end if; |
|
if (set_len_H = '1') then |
data_len (15 downto 8) <= dataval; |
data_len (7 downto 0) <= x"00"; |
elsif (set_len_L = '1') then |
-- compute data length, taking into account that we need to subtract the header length |
data_len <= std_logic_vector(unsigned(data_len(15 downto 8) & dataval) - 20); |
else |
data_len <= data_len; |
end if; |
|
case set_ip_rx_start is |
when SET => ip_rx_start_reg <= '1'; |
when CLR => ip_rx_start_reg <= '0'; |
when HOLD => ip_rx_start_reg <= ip_rx_start_reg; |
end case; |
|
case set_is_broadcast is |
when SET => is_broadcast_reg <= '1'; |
when CLR => is_broadcast_reg <= '0'; |
when HOLD => is_broadcast_reg <= is_broadcast_reg; |
end case; |
|
case set_hdr_valid is |
when SET => hdr_valid_reg <= '1'; |
when CLR => hdr_valid_reg <= '0'; |
when HOLD => hdr_valid_reg <= hdr_valid_reg; |
end case; |
|
-- set error code |
if set_error_code = '1' then |
error_code_reg <= error_code_val; |
else |
error_code_reg <= error_code_reg; |
end if; |
end if; |
end if; |
end process; |
|
end Behavioral; |
|
/udp_ip_stack/tags/v1.3/rtl/vhdl/IPv4.vhd
0,0 → 1,152
---------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: Peter Fall |
-- |
-- Create Date: 16:20:42 06/01/2011 |
-- Design Name: |
-- Module Name: IPv4 - Behavioral |
-- Project Name: |
-- Target Devices: |
-- Tool versions: |
-- Description: |
-- handle simple IP RX and TX |
-- doesnt handle seg & reass |
-- dest MAC addr resolution through ARP layer |
-- Handle IPv4 protocol |
-- Respond to ARP requests and replies |
-- Ignore pkts that are not IP |
-- Ignore pkts that are not addressed to us-- |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Revision 0.02 - separated RX and TX clocks |
-- Revision 0.03 - Added mac_data_out_first |
-- Additional Comments: |
-- |
---------------------------------------------------------------------------------- |
LIBRARY ieee; |
USE ieee.std_logic_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.axi.all; |
use work.ipv4_types.all; |
use work.arp_types.all; |
|
entity IPv4 is |
Port ( |
-- IP Layer signals |
ip_tx_start : in std_logic; |
ip_tx : in ipv4_tx_type; -- IP tx cxns |
ip_tx_result : out std_logic_vector (1 downto 0); -- tx status (changes during transmission) |
ip_tx_data_out_ready : out std_logic; -- indicates IP TX is ready to take data |
ip_rx_start : out std_logic; -- indicates receipt of ip frame. |
ip_rx : out ipv4_rx_type; |
-- system control signals |
rx_clk : in STD_LOGIC; |
tx_clk : in STD_LOGIC; |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
our_mac_address : in std_logic_vector (47 downto 0); |
-- system status signals |
rx_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us |
-- ARP lookup signals |
arp_req_req : out arp_req_req_type; |
arp_req_rslt : in arp_req_rslt_type; |
-- MAC layer RX signals |
mac_data_in : in STD_LOGIC_VECTOR (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame) |
mac_data_in_valid : in STD_LOGIC; -- indicates data_in valid on clock |
mac_data_in_last : in STD_LOGIC; -- indicates last data in frame |
-- MAC layer TX signals |
mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx) |
mac_tx_granted : in std_logic; -- indicates that access to channel has been granted |
mac_data_out_ready : in std_logic; -- indicates system ready to consume data |
mac_data_out_valid : out std_logic; -- indicates data out is valid |
mac_data_out_first : out std_logic; -- with data out valid indicates the first byte of a frame |
mac_data_out_last : out std_logic; -- with data out valid indicates the last byte of a frame |
mac_data_out : out std_logic_vector (7 downto 0) -- ethernet frame (from dst mac addr through to last byte of frame) |
); |
end IPv4; |
|
architecture structural of IPv4 is |
|
COMPONENT IPv4_TX |
PORT( |
-- IP Layer signals |
ip_tx_start : in std_logic; |
ip_tx : in ipv4_tx_type; -- IP tx cxns |
ip_tx_result : out std_logic_vector (1 downto 0); -- tx status (changes during transmission) |
ip_tx_data_out_ready : out std_logic; -- indicates IP TX is ready to take data |
|
-- system signals |
clk : in STD_LOGIC; -- same clock used to clock mac data and ip data |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
our_mac_address : in std_logic_vector (47 downto 0); |
-- ARP lookup signals |
arp_req_req : out arp_req_req_type; |
arp_req_rslt : in arp_req_rslt_type; |
-- MAC layer TX signals |
mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx) |
mac_tx_granted : in std_logic; -- indicates that access to channel has been granted |
mac_data_out_ready : in std_logic; -- indicates system ready to consume data |
mac_data_out_valid : out std_logic; -- indicates data out is valid |
mac_data_out_first : out std_logic; -- with data out valid indicates the first byte of a frame |
mac_data_out_last : out std_logic; -- with data out valid indicates the last byte of a frame |
mac_data_out : out std_logic_vector (7 downto 0) -- ethernet frame (from dst mac addr through to last byte of frame) |
); |
END COMPONENT; |
|
COMPONENT IPv4_RX |
PORT( |
-- IP Layer signals |
ip_rx : out ipv4_rx_type; |
ip_rx_start : out std_logic; -- indicates receipt of ip frame. |
-- system signals |
clk : in STD_LOGIC; |
reset : in STD_LOGIC; |
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0); |
rx_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us |
-- MAC layer RX signals |
mac_data_in : in STD_LOGIC_VECTOR (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame) |
mac_data_in_valid : in STD_LOGIC; -- indicates data_in valid on clock |
mac_data_in_last : in STD_LOGIC -- indicates last data in frame |
); |
END COMPONENT; |
|
begin |
|
TX : IPv4_TX PORT MAP ( |
ip_tx_start => ip_tx_start, |
ip_tx => ip_tx, |
ip_tx_result => ip_tx_result, |
ip_tx_data_out_ready=> ip_tx_data_out_ready, |
clk => tx_clk, |
reset => reset, |
our_ip_address => our_ip_address, |
our_mac_address => our_mac_address, |
arp_req_req => arp_req_req, |
arp_req_rslt => arp_req_rslt, |
mac_tx_req => mac_tx_req, |
mac_tx_granted => mac_tx_granted, |
mac_data_out_ready => mac_data_out_ready, |
mac_data_out_valid => mac_data_out_valid, |
mac_data_out_first => mac_data_out_first, |
mac_data_out_last => mac_data_out_last, |
mac_data_out => mac_data_out |
); |
|
RX : IPv4_RX PORT MAP ( |
ip_rx => ip_rx, |
ip_rx_start => ip_rx_start, |
clk => rx_clk, |
reset => reset, |
our_ip_address => our_ip_address, |
rx_pkt_count => rx_pkt_count, |
mac_data_in => mac_data_in, |
mac_data_in_valid => mac_data_in_valid, |
mac_data_in_last => mac_data_in_last |
); |
|
|
end structural; |
|
/udp_ip_stack/tags/v1.3/rtl/vhdl/tx_arbitrator.vhd
0,0 → 1,116
---------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: |
-- |
-- Create Date: 08:03:30 06/04/2011 |
-- Design Name: |
-- Module Name: tx_arbitrator - Behavioral |
-- Project Name: |
-- Target Devices: |
-- Tool versions: |
-- Description: arbitrate between two sources that want to transmit onto a bus |
-- handles arbitration and multiplexing |
-- |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Revision 0.02 - Made sticky on port M1 to optimise access on this port and allow immediate grant |
-- Revision 0.03 - Added first |
-- Additional Comments: |
-- |
---------------------------------------------------------------------------------- |
library IEEE; |
use IEEE.STD_LOGIC_1164.ALL; |
|
|
entity tx_arbitrator is |
port ( |
clk : in std_logic; |
reset : in std_logic; |
|
req_1 : in std_logic; |
grant_1 : out std_logic; |
data_1 : in std_logic_vector(7 downto 0); -- data byte to tx |
valid_1 : in std_logic; -- tdata is valid |
first_1 : in std_logic; -- indicates first byte of frame |
last_1 : in std_logic; -- indicates last byte of frame |
|
req_2 : in std_logic; |
grant_2 : out std_logic; |
data_2 : in std_logic_vector(7 downto 0); -- data byte to tx |
valid_2 : in std_logic; -- tdata is valid |
first_2 : in std_logic; -- indicates first byte of frame |
last_2 : in std_logic; -- indicates last byte of frame |
|
data : out std_logic_vector(7 downto 0); -- data byte to tx |
valid : out std_logic; -- tdata is valid |
first : out std_logic; -- indicates first byte of frame |
last : out std_logic -- indicates last byte of frame |
); |
end tx_arbitrator; |
|
architecture Behavioral of tx_arbitrator is |
|
type grant_type is (M1,M2); |
|
signal grant : grant_type; |
|
begin |
combinatorial : process ( |
grant, |
data_1, valid_1, first_1, last_1, |
data_2, valid_2, first_2, last_2 |
) |
begin |
-- grant outputs |
case grant is |
when M1 => |
grant_1 <= '1'; |
grant_2 <= '0'; |
when M2 => |
grant_1 <= '0'; |
grant_2 <= '1'; |
end case; |
|
-- multiplexer |
if grant = M1 then |
data <= data_1; |
valid <= valid_1; |
first <= first_1; |
last <= last_1; |
else |
data <= data_2; |
valid <= valid_2; |
first <= first_2; |
last <= last_2; |
end if; |
end process; |
|
sequential : process (clk, reset, req_1, req_2, grant) |
begin |
if rising_edge(clk) then |
if reset = '1' then |
grant <= M1; |
else |
case grant is |
when M1 => |
if req_1 = '1' then |
grant <= M1; |
elsif req_2 = '1' then |
grant <= M2; |
end if; |
when M2 => |
if req_2 = '1' then |
grant <= M2; |
else |
grant <= M1; |
end if; |
end case; |
end if; |
end if; |
end process; |
|
|
end Behavioral; |
|
/udp_ip_stack/tags/v1.3/rtl/vhdl/UDP_RX.vhd
0,0 → 1,343
---------------------------------------------------------------------------------- |
-- Company: |
-- Engineer: Peter Fall |
-- |
-- Create Date: 5 June 2011 |
-- Design Name: |
-- Module Name: UDP_RX - Behavioral |
-- Project Name: |
-- Target Devices: |
-- Tool versions: |
-- Description: |
-- handle simple UDP RX |
-- doesnt check the checsum |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Revision 0.02 - Improved error handling |
-- Additional Comments: |
-- |
---------------------------------------------------------------------------------- |
library IEEE; |
use IEEE.STD_LOGIC_1164.ALL; |
use IEEE.NUMERIC_STD.ALL; |
use work.axi.all; |
use work.ipv4_types.all; |
|
entity UDP_RX is |
Port ( |
-- UDP Layer signals |
udp_rx_start : out std_logic; -- indicates receipt of udp header |
udp_rxo : out udp_rx_type; |
-- system signals |
clk : in STD_LOGIC; |
reset : in STD_LOGIC; |
-- IP layer RX signals |
ip_rx_start : in std_logic; -- indicates receipt of ip header |
ip_rx : in ipv4_rx_type |
); |
end UDP_RX; |
|
architecture Behavioral of UDP_RX is |
|
type rx_state_type is (IDLE, UDP_HDR, USER_DATA, WAIT_END, ERR); |
|
type rx_event_type is (NO_EVENT,DATA); |
type count_mode_type is (RST, INCR, HOLD); |
type settable_count_mode_type is (RST, INCR, SET_VAL, HOLD); |
type set_clr_type is (SET, CLR, HOLD); |
|
|
-- state variables |
signal rx_state : rx_state_type; |
signal rx_count : unsigned (15 downto 0); |
signal src_port : std_logic_vector (15 downto 0); -- src port captured from input |
signal dst_port : std_logic_vector (15 downto 0); -- dst port captured from input |
signal data_len : std_logic_vector (15 downto 0); -- user data length captured from input |
signal udp_rx_start_reg : std_logic; -- indicates start of user data |
signal hdr_valid_reg : std_logic; -- indicates that hdr data is valid |
signal src_ip_addr : std_logic_vector (31 downto 0); -- captured from IP hdr |
|
-- rx control signals |
signal next_rx_state : rx_state_type; |
signal set_rx_state : std_logic; |
signal rx_event : rx_event_type; |
signal rx_count_mode : settable_count_mode_type; |
signal rx_count_val : unsigned (15 downto 0); |
signal set_sph : std_logic; |
signal set_spl : std_logic; |
signal set_dph : std_logic; |
signal set_dpl : std_logic; |
signal set_len_H : std_logic; |
signal set_len_L : std_logic; |
signal set_udp_rx_start : set_clr_type; |
signal set_hdr_valid : set_clr_type; |
signal dataval : std_logic_vector (7 downto 0); |
signal set_pkt_cnt : count_mode_type; |
signal set_src_ip : std_logic; |
signal set_data_last : std_logic; |
|
-- IP datagram header format |
-- |
-- 0 4 8 16 19 24 31 |
-- -------------------------------------------------------------------------------------------- |
-- | source port number | dest port number | |
-- | | | |
-- -------------------------------------------------------------------------------------------- |
-- | length (bytes) | checksum | |
-- | (header and data combined) | | |
-- -------------------------------------------------------------------------------------------- |
-- | Data | |
-- | | |
-- -------------------------------------------------------------------------------------------- |
-- | .... | |
-- | | |
-- -------------------------------------------------------------------------------------------- |
|
|
begin |
|
----------------------------------------------------------------------- |
-- combinatorial process to implement FSM and determine control signals |
----------------------------------------------------------------------- |
|
rx_combinatorial : process ( |
-- input signals |
ip_rx, ip_rx_start, |
-- state variables |
rx_state, rx_count, src_port, dst_port, data_len, udp_rx_start_reg, hdr_valid_reg, src_ip_addr, |
-- control signals |
next_rx_state, set_rx_state, rx_event, rx_count_mode, rx_count_val, |
set_sph, set_spl, set_dph, set_dpl, set_len_H, set_len_L, set_data_last, |
set_udp_rx_start, set_hdr_valid, dataval, set_pkt_cnt, set_src_ip |
) |
begin |
-- set output followers |
udp_rx_start <= udp_rx_start_reg; |
udp_rxo.hdr.is_valid <= hdr_valid_reg; |
udp_rxo.hdr.data_length <= data_len; |
udp_rxo.hdr.src_port <= src_port; |
udp_rxo.hdr.dst_port <= dst_port; |
udp_rxo.hdr.src_ip_addr <= src_ip_addr; |
|
-- transfer data upstream if in user data phase |
if rx_state = USER_DATA then |
udp_rxo.data.data_in <= ip_rx.data.data_in; |
udp_rxo.data.data_in_valid <= ip_rx.data.data_in_valid; |
udp_rxo.data.data_in_last <= set_data_last; |
else |
udp_rxo.data.data_in <= (others => '0'); |
udp_rxo.data.data_in_valid <= '0'; |
udp_rxo.data.data_in_last <= '0'; |
end if; |
|
-- set signal defaults |
next_rx_state <= IDLE; |
set_rx_state <= '0'; |
rx_event <= NO_EVENT; |
rx_count_mode <= HOLD; |
set_sph <= '0'; |
set_spl <= '0'; |
set_dph <= '0'; |
set_dpl <= '0'; |
set_len_H <= '0'; |
set_len_L <= '0'; |
set_udp_rx_start <= HOLD; |
set_hdr_valid <= HOLD; |
dataval <= (others => '0'); |
set_src_ip <= '0'; |
rx_count_val <= (others => '0'); |
set_data_last <= '0'; |
|
-- determine event (if any) |
if ip_rx.data.data_in_valid = '1' then |
rx_event <= DATA; |
dataval <= ip_rx.data.data_in; |
end if; |
|
-- RX FSM |
case rx_state is |
when IDLE => |
rx_count_mode <= RST; |
case rx_event is |
when NO_EVENT => -- (nothing to do) |
when DATA => |
if ip_rx.hdr.protocol = x"11" then |
-- UDP protocol |
rx_count_mode <= INCR; |
set_hdr_valid <= CLR; |
set_src_ip <= '1'; |
set_sph <= '1'; |
next_rx_state <= UDP_HDR; |
set_rx_state <= '1'; |
else |
-- non-UDP protocol - ignore this pkt |
set_hdr_valid <= CLR; |
next_rx_state <= WAIT_END; |
set_rx_state <= '1'; |
end if; |
end case; |
|
when UDP_HDR => |
case rx_event is |
when NO_EVENT => -- (nothing to do) |
when DATA => |
if rx_count = x"0007" then |
rx_count_mode <= SET_VAL; |
rx_count_val <= x"0001"; |
next_rx_state <= USER_DATA; |
set_rx_state <= '1'; |
else |
rx_count_mode <= INCR; |
end if; |
-- handle early frame termination |
if ip_rx.data.data_in_last = '1' then |
next_rx_state <= ERR; |
set_rx_state <= '1'; |
else |
case rx_count is |
when x"0000" => set_sph <= '1'; |
when x"0001" => set_spl <= '1'; |
when x"0002" => set_dph <= '1'; |
when x"0003" => set_dpl <= '1'; |
|
when x"0004" => set_len_H <= '1'; |
when x"0005" => set_len_L <= '1'; set_hdr_valid <= SET; -- header values are now valid, although the pkt may not be for us |
|
when x"0006" => -- ignore checksum values |
when x"0007" => set_udp_rx_start <= SET; -- indicate frame received |
|
|
when others => -- ignore other bytes in udp header |
end case; |
end if; |
end case; |
|
when USER_DATA => |
case rx_event is |
when NO_EVENT => -- (nothing to do) |
when DATA => |
-- note: data gets transfered upstream as part of "output followers" processing |
if rx_count = unsigned(data_len) then |
set_udp_rx_start <= CLR; |
rx_count_mode <= RST; |
set_data_last <= '1'; |
if ip_rx.data.data_in_last = '1' then |
next_rx_state <= IDLE; |
set_udp_rx_start <= CLR; |
else |
next_rx_state <= WAIT_END; |
end if; |
set_rx_state <= '1'; |
else |
rx_count_mode <= INCR; |
-- check for early frame termination |
-- TODO need to mark frame as errored |
if ip_rx.data.data_in_last = '1' then |
next_rx_state <= IDLE; |
set_rx_state <= '1'; |
set_data_last <= '1'; |
end if; |
end if; |
end case; |
|
when ERR => |
if ip_rx.data.data_in_last = '0' then |
next_rx_state <= WAIT_END; |
set_rx_state <= '1'; |
else |
next_rx_state <= IDLE; |
set_rx_state <= '1'; |
end if; |
|
|
when WAIT_END => |
case rx_event is |
when NO_EVENT => -- (nothing to do) |
when DATA => |
if ip_rx.data.data_in_last = '1' then |
next_rx_state <= IDLE; |
set_rx_state <= '1'; |
end if; |
end case; |
|
end case; |
|
end process; |
|
|
----------------------------------------------------------------------------- |
-- sequential process to action control signals and change states and outputs |
----------------------------------------------------------------------------- |
|
rx_sequential : process (clk,reset) |
begin |
if rising_edge(clk) then |
if reset = '1' then |
-- reset state variables |
rx_state <= IDLE; |
rx_count <= x"0000"; |
src_port <= (others => '0'); |
dst_port <= (others => '0'); |
data_len <= (others => '0'); |
udp_rx_start_reg <= '0'; |
hdr_valid_reg <= '0'; |
src_ip_addr <= (others => '0'); |
else |
-- Next rx_state processing |
if set_rx_state = '1' then |
rx_state <= next_rx_state; |
else |
rx_state <= rx_state; |
end if; |
|
-- rx_count processing |
case rx_count_mode is |
when RST => rx_count <= x"0000"; |
when INCR => rx_count <= rx_count + 1; |
when SET_VAL => rx_count <= rx_count_val; |
when HOLD => rx_count <= rx_count; |
end case; |
|
-- port number capture |
if (set_sph = '1') then src_port(15 downto 8) <= dataval; end if; |
if (set_spl = '1') then src_port(7 downto 0) <= dataval; end if; |
if (set_dph = '1') then dst_port(15 downto 8) <= dataval; end if; |
if (set_dpl = '1') then dst_port(7 downto 0) <= dataval; end if; |
|
if (set_len_H = '1') then |
data_len (15 downto 8) <= dataval; |
data_len (7 downto 0) <= x"00"; |
elsif (set_len_L = '1') then |
-- compute data length, taking into account that we need to subtract the header length |
data_len <= std_logic_vector(unsigned(data_len(15 downto 8) & dataval) - 8); |
else |
data_len <= data_len; |
end if; |
|
case set_udp_rx_start is |
when SET => udp_rx_start_reg <= '1'; |
when CLR => udp_rx_start_reg <= '0'; |
when HOLD => udp_rx_start_reg <= udp_rx_start_reg; |
end case; |
|
-- capture src IP address |
if set_src_ip = '1' then |
src_ip_addr <= ip_rx.hdr.src_ip_addr; |
else |
src_ip_addr <= src_ip_addr; |
end if; |
|
case set_hdr_valid is |
when SET => hdr_valid_reg <= '1'; |
when CLR => hdr_valid_reg <= '0'; |
when HOLD => hdr_valid_reg <= hdr_valid_reg; |
end case; |
|
end if; |
end if; |
end process; |
|
end Behavioral; |
|
/udp_ip_stack/tags/v1.3/rtl/vhdl/axi.vhd
0,0 → 1,25
-- |
-- Package File Template |
-- |
-- Purpose: This package defines data types for AXI transfers |
|
|
library IEEE; |
use IEEE.STD_LOGIC_1164.all; |
|
package axi is |
|
type axi_in_type is record |
data_in : STD_LOGIC_VECTOR (7 downto 0); |
data_in_valid : STD_LOGIC; -- indicates data_in valid on clock |
data_in_last : STD_LOGIC; -- indicates last data in frame |
end record; |
|
|
type axi_out_type is record |
data_out_valid : std_logic; -- indicates data out is valid |
data_out_last : std_logic; -- with data out valid indicates the last byte of a frame |
data_out : std_logic_vector (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame) |
end record; |
|
end axi; |
/udp_ip_stack/tags/v1.3/doc/release_notes.txt
0,0 → 1,18
V1.3 - Added ARP timeout and ability to reset the ARP IP/MAC cache |
Migration notes: v1.2 to v1.3 - UDP_complete_nomac and IP_Complete_nomac have generics |
to specify clock rate and ARP timeout, and an additional control input. |
The generics can be left at their default values, the control input should have clear_cache set to '0'. |
|
|
V1.2 - Added handling for receipt of IP pkts with broadcast address ff.ff.ff.ff. Added is_broadcast flag |
to IP RX hdr. |
- Added ability to transmit IP pkts to broadcast address. |
Migration Notes: V1.1 to V1.2 - IP_RX_HDR has an additional output signal to indicate the IP pkt |
was received on the broadcast address. |
|
V1.1 - Added mac_tx_tfirst output to assist coupling to MAC layers that require a start of frame indication. |
Migration Notes: V1.0 to V1.1 |
- The entity declaration for UDP_Complete_nomac and IP_Complete_nomac have changed. |
- if you dont need to use the new mac_tx_tfirst output, leave it open. |
|
V1.0 - initial release |
/udp_ip_stack/tags/v1.3/doc/src/UDP_IP_Stack.pptx
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Index: udp_ip_stack/tags/v1.3/sw/test_results/UDPTestStream_console.txt
===================================================================
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@@ -0,0 +1,152 @@
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+Got [@ABC]
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Index: udp_ip_stack/tags/v1.3/sw/test_results/UDPTestStream_wireshark.pcap
===================================================================
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Index: udp_ip_stack/tags/v1.3/sw/test_results/UDPTestStream_wireshark.pcap
===================================================================
--- udp_ip_stack/tags/v1.3/sw/test_results/UDPTestStream_wireshark.pcap (nonexistent)
+++ udp_ip_stack/tags/v1.3/sw/test_results/UDPTestStream_wireshark.pcap (revision 9)
udp_ip_stack/tags/v1.3/sw/test_results/UDPTestStream_wireshark.pcap
Property changes :
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+application/octet-stream
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Index: udp_ip_stack/tags/v1.3/sw/test_results/UDPTest_console.txt
===================================================================
--- udp_ip_stack/tags/v1.3/sw/test_results/UDPTest_console.txt (nonexistent)
+++ udp_ip_stack/tags/v1.3/sw/test_results/UDPTest_console.txt (revision 9)
@@ -0,0 +1,2 @@
+Sending packet: 1=45~34=201~18=23~ on port 2000
+Got [@ABC]
Index: udp_ip_stack/tags/v1.3/sw/test_results/UDPTest_wireshark.pcap
===================================================================
Cannot display: file marked as a binary type.
svn:mime-type = application/octet-stream
Index: udp_ip_stack/tags/v1.3/sw/test_results/UDPTest_wireshark.pcap
===================================================================
--- udp_ip_stack/tags/v1.3/sw/test_results/UDPTest_wireshark.pcap (nonexistent)
+++ udp_ip_stack/tags/v1.3/sw/test_results/UDPTest_wireshark.pcap (revision 9)
udp_ip_stack/tags/v1.3/sw/test_results/UDPTest_wireshark.pcap
Property changes :
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
\ No newline at end of property
Index: udp_ip_stack/tags/v1.3/sw/UDPCxn.java
===================================================================
--- udp_ip_stack/tags/v1.3/sw/UDPCxn.java (nonexistent)
+++ udp_ip_stack/tags/v1.3/sw/UDPCxn.java (revision 9)
@@ -0,0 +1,72 @@
+package com.pjf;
+
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+import java.net.InetAddress;
+import java.net.SocketException;
+import java.net.UnknownHostException;
+
+
+public class UDPCxn {
+ private DatagramSocket skt;
+ private InetAddress dstIP;
+
+ public UDPCxn(long dstIPadr) throws SocketException, UnknownHostException {
+ skt = new DatagramSocket();
+ byte[] target = new byte[4];
+ target[0] = (byte) ((dstIPadr >> 24) & 0xff);
+ target[1] = (byte) ((dstIPadr >> 16) & 0xff);
+ target[2] = (byte) ((dstIPadr >> 8) & 0xff);
+ target[3] = (byte) (dstIPadr & 0xff);
+ dstIP = InetAddress.getByAddress(target);
+ }
+
+ public UDPCxn(String dstIPadr) throws SocketException, UnknownHostException {
+ skt = new DatagramSocket();
+ String[] parts = dstIPadr.split("[.]");
+ if (parts.length != 4) {
+ throw new UnknownHostException("ip addr must have 4 parts");
+ }
+ byte[] target = new byte[4];
+ for (int i = 0; i<4; i++) {
+ target[i] = (byte) Integer.parseInt(parts[i]);
+ }
+ dstIP = InetAddress.getByAddress(target);
+ }
+
+ public void send(byte[] data, int port) throws IOException {
+ DatagramPacket pkt = new DatagramPacket(data, data.length, dstIP, port);
+ System.out.println("Sending packet");
+ skt.send(pkt);
+ }
+
+ public void fixSend(String str, int port, boolean print) throws IOException {
+ String s1 = str.replace('~','\001');
+ byte[] data = s1.getBytes();
+ DatagramPacket pkt = new DatagramPacket(data, data.length, dstIP, port);
+ if (print) {
+ System.out.println("Sending packet: " + str + " on port " + port);
+ }
+ skt.send(pkt);
+ }
+
+
+ public byte[] rcv() throws IOException {
+ byte[] buf = new byte[1024];
+ DatagramPacket pkt = new DatagramPacket(buf, buf.length);
+// System.out.println("waiting to receive ...");
+ skt.receive(pkt);
+ int len = pkt.getLength();
+ byte[] rd = pkt.getData();
+ byte[] data = new byte[len];
+ for (int i=0; i=150; price--) {
+ StringBuffer fixmsg = new StringBuffer(fix1);
+ fixmsg.append(Integer.toString(price));
+ fixmsg.append(fix2);
+ System.out.println("Sending price tick " + price);
+ cxn.fixSend(fixmsg.toString(), 2000, false);
+ }
+ Thread.sleep(2000);
+ }
+
+
+ public static void main(String[] args) {
+ UDPTestStream ut;
+ try {
+ ut = new UDPTestStream();
+ ut.go();
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+
+
+}
Index: udp_ip_stack/tags/v1.3/sw/UDPTest.java
===================================================================
--- udp_ip_stack/tags/v1.3/sw/UDPTest.java (nonexistent)
+++ udp_ip_stack/tags/v1.3/sw/UDPTest.java (revision 9)
@@ -0,0 +1,34 @@
+package com.pjf;
+
+import java.io.IOException;
+import java.net.SocketException;
+import java.net.UnknownHostException;
+
+public class UDPTest {
+ private UDPCxn cxn;
+
+ public UDPTest() throws SocketException, UnknownHostException {
+ cxn = new UDPCxn("192.168.5.9");
+ }
+
+ public void go() throws IOException {
+ String fix1 = "1=45~34=201~18=23~";
+ cxn.fixSend(fix1, 2000, true);
+ byte[] rep = cxn.rcv();
+ String reply = new String(rep);
+ System.out.println("Got [" + reply + "]");
+ }
+
+
+ public static void main(String[] args) {
+ UDPTest ut;
+ try {
+ ut = new UDPTest();
+ ut.go();
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+
+
+}