----------------------------------------------------------------------------------
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----------------------------------------------------------------------------------
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-- Company:
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-- Company:
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-- Engineer:
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-- Engineer:
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--
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--
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-- Create Date: 12:43:16 06/04/2011
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-- Create Date: 12:43:16 06/04/2011
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-- Design Name:
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-- Design Name:
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-- Module Name: IP_complete_nomac - Behavioral
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-- Module Name: IP_complete_nomac - Behavioral
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-- Project Name:
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-- Project Name:
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-- Target Devices:
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-- Target Devices:
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-- Tool versions:
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-- Tool versions:
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-- Description: Implements complete IP stack with ARP (but no MAC)
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-- Description: Implements complete IP stack with ARP (but no MAC)
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--
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--
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-- Dependencies:
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-- Dependencies:
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--
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--
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-- Revision:
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-- Revision:
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-- Revision 0.01 - File Created
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-- Revision 0.01 - File Created
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-- Revision 0.02 - separated RX and TX clocks
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-- Revision 0.02 - separated RX and TX clocks
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-- Revision 0.03 - Added mac_tx_tfirst
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-- Revision 0.03 - Added mac_tx_tfirst
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-- Additional Comments:
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-- Additional Comments:
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--
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--
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----------------------------------------------------------------------------------
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----------------------------------------------------------------------------------
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LIBRARY ieee;
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LIBRARY ieee;
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USE ieee.std_logic_1164.ALL;
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USE ieee.std_logic_1164.ALL;
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use IEEE.NUMERIC_STD.ALL;
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use IEEE.NUMERIC_STD.ALL;
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use work.axi.all;
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use work.axi.all;
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use work.ipv4_types.all;
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use work.ipv4_types.all;
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use work.arp_types.all;
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use work.arp_types.all;
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entity IP_complete_nomac is
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entity IP_complete_nomac is
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generic (
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CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr
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ARP_TIMEOUT : integer := 60 -- ARP response timeout (s)
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);
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Port (
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Port (
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-- IP Layer signals
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-- IP Layer signals
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ip_tx_start : in std_logic;
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ip_tx_start : in std_logic;
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ip_tx : in ipv4_tx_type; -- IP tx cxns
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ip_tx : in ipv4_tx_type; -- IP tx cxns
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ip_tx_result : out std_logic_vector (1 downto 0); -- tx status (changes during transmission)
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ip_tx_result : out std_logic_vector (1 downto 0); -- tx status (changes during transmission)
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ip_tx_data_out_ready : out std_logic; -- indicates IP TX is ready to take data
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ip_tx_data_out_ready : out std_logic; -- indicates IP TX is ready to take data
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ip_rx_start : out std_logic; -- indicates receipt of ip frame.
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ip_rx_start : out std_logic; -- indicates receipt of ip frame.
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ip_rx : out ipv4_rx_type;
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ip_rx : out ipv4_rx_type;
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-- system signals
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-- system signals
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rx_clk : in STD_LOGIC;
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rx_clk : in STD_LOGIC;
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tx_clk : in STD_LOGIC;
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tx_clk : in STD_LOGIC;
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reset : in STD_LOGIC;
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reset : in STD_LOGIC;
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our_ip_address : in STD_LOGIC_VECTOR (31 downto 0);
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our_ip_address : in STD_LOGIC_VECTOR (31 downto 0);
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our_mac_address : in std_logic_vector (47 downto 0);
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our_mac_address : in std_logic_vector (47 downto 0);
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control : in ip_control_type;
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-- status signals
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-- status signals
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arp_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- count of arp pkts received
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arp_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- count of arp pkts received
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ip_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us
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ip_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us
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-- MAC Transmitter
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-- MAC Transmitter
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mac_tx_tdata : out std_logic_vector(7 downto 0); -- data byte to tx
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mac_tx_tdata : out std_logic_vector(7 downto 0); -- data byte to tx
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mac_tx_tvalid : out std_logic; -- tdata is valid
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mac_tx_tvalid : out std_logic; -- tdata is valid
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mac_tx_tready : in std_logic; -- mac is ready to accept data
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mac_tx_tready : in std_logic; -- mac is ready to accept data
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mac_tx_tfirst : out std_logic; -- indicates first byte of frame
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mac_tx_tfirst : out std_logic; -- indicates first byte of frame
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mac_tx_tlast : out std_logic; -- indicates last byte of frame
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mac_tx_tlast : out std_logic; -- indicates last byte of frame
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-- MAC Receiver
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-- MAC Receiver
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mac_rx_tdata : in std_logic_vector(7 downto 0); -- data byte received
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mac_rx_tdata : in std_logic_vector(7 downto 0); -- data byte received
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mac_rx_tvalid : in std_logic; -- indicates tdata is valid
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mac_rx_tvalid : in std_logic; -- indicates tdata is valid
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mac_rx_tready : out std_logic; -- tells mac that we are ready to take data
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mac_rx_tready : out std_logic; -- tells mac that we are ready to take data
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mac_rx_tlast : in std_logic -- indicates last byte of the trame
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mac_rx_tlast : in std_logic -- indicates last byte of the trame
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);
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);
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end IP_complete_nomac;
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end IP_complete_nomac;
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architecture structural of IP_complete_nomac is
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architecture structural of IP_complete_nomac is
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COMPONENT IPv4
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COMPONENT IPv4
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PORT(
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PORT(
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-- IP Layer signals
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-- IP Layer signals
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ip_tx_start : in std_logic;
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ip_tx_start : in std_logic;
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ip_tx : in ipv4_tx_type; -- IP tx cxns
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ip_tx : in ipv4_tx_type; -- IP tx cxns
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ip_tx_result : out std_logic_vector (1 downto 0); -- tx status (changes during transmission)
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ip_tx_result : out std_logic_vector (1 downto 0); -- tx status (changes during transmission)
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ip_tx_data_out_ready : out std_logic; -- indicates IP TX is ready to take data
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ip_tx_data_out_ready : out std_logic; -- indicates IP TX is ready to take data
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ip_rx_start : out std_logic; -- indicates receipt of ip frame.
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ip_rx_start : out std_logic; -- indicates receipt of ip frame.
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ip_rx : out ipv4_rx_type;
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ip_rx : out ipv4_rx_type;
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-- system control signals
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-- system control signals
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rx_clk : in STD_LOGIC;
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rx_clk : in STD_LOGIC;
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tx_clk : in STD_LOGIC;
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tx_clk : in STD_LOGIC;
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reset : in STD_LOGIC;
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reset : in STD_LOGIC;
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our_ip_address : in STD_LOGIC_VECTOR (31 downto 0);
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our_ip_address : in STD_LOGIC_VECTOR (31 downto 0);
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our_mac_address : in std_logic_vector (47 downto 0);
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our_mac_address : in std_logic_vector (47 downto 0);
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-- system status signals
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-- system status signals
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rx_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us
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rx_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us
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-- ARP lookup signals
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-- ARP lookup signals
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arp_req_req : out arp_req_req_type;
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arp_req_req : out arp_req_req_type;
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arp_req_rslt : in arp_req_rslt_type;
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arp_req_rslt : in arp_req_rslt_type;
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-- MAC layer RX signals
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-- MAC layer RX signals
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mac_data_in : in STD_LOGIC_VECTOR (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame)
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mac_data_in : in STD_LOGIC_VECTOR (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame)
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mac_data_in_valid : in STD_LOGIC; -- indicates data_in valid on clock
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mac_data_in_valid : in STD_LOGIC; -- indicates data_in valid on clock
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mac_data_in_last : in STD_LOGIC; -- indicates last data in frame
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mac_data_in_last : in STD_LOGIC; -- indicates last data in frame
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-- MAC layer TX signals
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-- MAC layer TX signals
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mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx)
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mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx)
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mac_tx_granted : in std_logic; -- indicates that access to channel has been granted
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mac_tx_granted : in std_logic; -- indicates that access to channel has been granted
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mac_data_out_ready : in std_logic; -- indicates system ready to consume data
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mac_data_out_ready : in std_logic; -- indicates system ready to consume data
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mac_data_out_valid : out std_logic; -- indicates data out is valid
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mac_data_out_valid : out std_logic; -- indicates data out is valid
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mac_data_out_first : out std_logic; -- with data out valid indicates the first byte of a frame
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mac_data_out_first : out std_logic; -- with data out valid indicates the first byte of a frame
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mac_data_out_last : out std_logic; -- with data out valid indicates the last byte of a frame
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mac_data_out_last : out std_logic; -- with data out valid indicates the last byte of a frame
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mac_data_out : out std_logic_vector (7 downto 0) -- ethernet frame (from dst mac addr through to last byte of frame)
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mac_data_out : out std_logic_vector (7 downto 0) -- ethernet frame (from dst mac addr through to last byte of frame)
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);
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);
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END COMPONENT;
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END COMPONENT;
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COMPONENT arp
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COMPONENT arp
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PORT(
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generic (
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CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr
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ARP_TIMEOUT : integer := 60 -- ARP response timeout (s)
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);
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Port (
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-- lookup request signals
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-- lookup request signals
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arp_req_req : in arp_req_req_type;
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arp_req_req : in arp_req_req_type;
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arp_req_rslt : out arp_req_rslt_type;
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arp_req_rslt : out arp_req_rslt_type;
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-- MAC layer RX signals
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-- MAC layer RX signals
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data_in_clk : in STD_LOGIC;
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data_in_clk : in STD_LOGIC;
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reset : in STD_LOGIC;
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reset : in STD_LOGIC;
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data_in : in STD_LOGIC_VECTOR (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame)
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data_in : in STD_LOGIC_VECTOR (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame)
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data_in_valid : in STD_LOGIC; -- indicates data_in valid on clock
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data_in_valid : in STD_LOGIC; -- indicates data_in valid on clock
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data_in_last : in STD_LOGIC; -- indicates last data in frame
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data_in_last : in STD_LOGIC; -- indicates last data in frame
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-- MAC layer TX signals
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-- MAC layer TX signals
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mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx)
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mac_tx_req : out std_logic; -- indicates that ip wants access to channel (stays up for as long as tx)
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mac_tx_granted : in std_logic; -- indicates that access to channel has been granted
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mac_tx_granted : in std_logic; -- indicates that access to channel has been granted
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data_out_clk : in std_logic;
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data_out_clk : in std_logic;
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data_out_ready : in std_logic; -- indicates system ready to consume data
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data_out_ready : in std_logic; -- indicates system ready to consume data
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data_out_valid : out std_logic; -- indicates data out is valid
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data_out_valid : out std_logic; -- indicates data out is valid
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data_out_first : out std_logic; -- with data out valid indicates the first byte of a frame
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data_out_first : out std_logic; -- with data out valid indicates the first byte of a frame
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data_out_last : out std_logic; -- with data out valid indicates the last byte of a frame
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data_out_last : out std_logic; -- with data out valid indicates the last byte of a frame
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data_out : out std_logic_vector (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame)
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data_out : out std_logic_vector (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame)
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-- system signals
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-- system signals
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our_mac_address : in STD_LOGIC_VECTOR (47 downto 0);
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our_mac_address : in STD_LOGIC_VECTOR (47 downto 0);
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our_ip_address : in STD_LOGIC_VECTOR (31 downto 0);
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our_ip_address : in STD_LOGIC_VECTOR (31 downto 0);
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control : in arp_control_type;
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req_count : out STD_LOGIC_VECTOR(7 downto 0) -- count of arp pkts received
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req_count : out STD_LOGIC_VECTOR(7 downto 0) -- count of arp pkts received
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);
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);
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END COMPONENT;
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END COMPONENT;
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COMPONENT tx_arbitrator
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COMPONENT tx_arbitrator
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PORT(
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PORT(
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clk : in std_logic;
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clk : in std_logic;
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reset : in std_logic;
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reset : in std_logic;
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req_1 : in std_logic;
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req_1 : in std_logic;
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grant_1 : out std_logic;
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grant_1 : out std_logic;
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data_1 : in std_logic_vector(7 downto 0); -- data byte to tx
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data_1 : in std_logic_vector(7 downto 0); -- data byte to tx
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valid_1 : in std_logic; -- tdata is valid
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valid_1 : in std_logic; -- tdata is valid
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first_1 : in std_logic; -- indicates first byte of frame
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first_1 : in std_logic; -- indicates first byte of frame
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last_1 : in std_logic; -- indicates last byte of frame
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last_1 : in std_logic; -- indicates last byte of frame
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req_2 : in std_logic;
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req_2 : in std_logic;
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grant_2 : out std_logic;
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grant_2 : out std_logic;
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data_2 : in std_logic_vector(7 downto 0); -- data byte to tx
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data_2 : in std_logic_vector(7 downto 0); -- data byte to tx
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valid_2 : in std_logic; -- tdata is valid
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valid_2 : in std_logic; -- tdata is valid
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first_2 : in std_logic; -- indicates first byte of frame
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first_2 : in std_logic; -- indicates first byte of frame
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last_2 : in std_logic; -- indicates last byte of frame
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last_2 : in std_logic; -- indicates last byte of frame
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data : out std_logic_vector(7 downto 0); -- data byte to tx
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data : out std_logic_vector(7 downto 0); -- data byte to tx
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valid : out std_logic; -- tdata is valid
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valid : out std_logic; -- tdata is valid
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first : out std_logic; -- indicates first byte of frame
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first : out std_logic; -- indicates first byte of frame
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last : out std_logic -- indicates last byte of frame
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last : out std_logic -- indicates last byte of frame
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);
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);
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END COMPONENT;
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END COMPONENT;
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---------------------------
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---------------------------
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-- Signals
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-- Signals
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---------------------------
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---------------------------
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-- ARP REQUEST
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-- ARP REQUEST
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signal arp_req_req_int : arp_req_req_type;
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signal arp_req_req_int : arp_req_req_type;
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signal arp_req_rslt_int : arp_req_rslt_type;
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signal arp_req_rslt_int : arp_req_rslt_type;
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-- MAC arbitration busses
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-- MAC arbitration busses
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signal ip_mac_req : std_logic;
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signal ip_mac_req : std_logic;
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signal ip_mac_grant : std_logic;
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signal ip_mac_grant : std_logic;
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signal ip_mac_data_out : std_logic_vector (7 downto 0);
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signal ip_mac_data_out : std_logic_vector (7 downto 0);
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signal ip_mac_valid : std_logic;
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signal ip_mac_valid : std_logic;
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signal ip_mac_first : std_logic;
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signal ip_mac_first : std_logic;
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signal ip_mac_last : std_logic;
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signal ip_mac_last : std_logic;
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signal arp_mac_req : std_logic;
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signal arp_mac_req : std_logic;
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signal arp_mac_grant : std_logic;
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signal arp_mac_grant : std_logic;
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signal arp_mac_data_out : std_logic_vector (7 downto 0);
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signal arp_mac_data_out : std_logic_vector (7 downto 0);
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signal arp_mac_valid : std_logic;
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signal arp_mac_valid : std_logic;
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signal arp_mac_first : std_logic;
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signal arp_mac_first : std_logic;
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signal arp_mac_last : std_logic;
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signal arp_mac_last : std_logic;
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-- MAC RX bus
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-- MAC RX bus
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signal mac_rx_tready_int : std_logic;
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signal mac_rx_tready_int : std_logic;
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-- MAC TX bus
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-- MAC TX bus
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signal mac_tx_tdata_int : std_logic_vector (7 downto 0);
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signal mac_tx_tdata_int : std_logic_vector (7 downto 0);
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signal mac_tx_tvalid_int : std_logic;
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signal mac_tx_tvalid_int : std_logic;
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signal mac_tx_tfirst_int : std_logic;
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signal mac_tx_tfirst_int : std_logic;
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signal mac_tx_tlast_int : std_logic;
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signal mac_tx_tlast_int : std_logic;
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-- control signals
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-- control signals
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signal mac_tx_granted_int : std_logic;
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signal mac_tx_granted_int : std_logic;
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begin
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begin
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mac_rx_tready_int <= '1'; -- enable the mac receiver
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mac_rx_tready_int <= '1'; -- enable the mac receiver
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-- set followers
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-- set followers
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mac_tx_tdata <= mac_tx_tdata_int;
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mac_tx_tdata <= mac_tx_tdata_int;
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mac_tx_tvalid <= mac_tx_tvalid_int;
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mac_tx_tvalid <= mac_tx_tvalid_int;
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mac_tx_tfirst <= mac_tx_tfirst_int;
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mac_tx_tfirst <= mac_tx_tfirst_int;
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mac_tx_tlast <= mac_tx_tlast_int;
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mac_tx_tlast <= mac_tx_tlast_int;
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mac_rx_tready <= mac_rx_tready_int;
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mac_rx_tready <= mac_rx_tready_int;
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|
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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-- Instantiate the IP layer
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-- Instantiate the IP layer
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------------------------------------------------------------------------------
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------------------------------------------------------------------------------
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IP_layer : IPv4 PORT MAP
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IP_layer : IPv4 PORT MAP
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(
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(
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ip_tx_start => ip_tx_start,
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ip_tx_start => ip_tx_start,
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ip_tx => ip_tx,
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ip_tx => ip_tx,
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ip_tx_result => ip_tx_result,
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ip_tx_result => ip_tx_result,
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ip_tx_data_out_ready=> ip_tx_data_out_ready,
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ip_tx_data_out_ready=> ip_tx_data_out_ready,
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ip_rx_start => ip_rx_start,
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ip_rx_start => ip_rx_start,
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ip_rx => ip_rx,
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ip_rx => ip_rx,
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rx_clk => rx_clk,
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rx_clk => rx_clk,
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tx_clk => tx_clk,
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tx_clk => tx_clk,
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reset => reset,
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reset => reset,
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our_ip_address => our_ip_address,
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our_ip_address => our_ip_address,
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our_mac_address => our_mac_address,
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our_mac_address => our_mac_address,
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rx_pkt_count => ip_pkt_count,
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rx_pkt_count => ip_pkt_count,
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arp_req_req => arp_req_req_int,
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arp_req_req => arp_req_req_int,
|
arp_req_rslt => arp_req_rslt_int,
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arp_req_rslt => arp_req_rslt_int,
|
mac_tx_req => ip_mac_req,
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mac_tx_req => ip_mac_req,
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mac_tx_granted => ip_mac_grant,
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mac_tx_granted => ip_mac_grant,
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mac_data_out_ready => mac_tx_tready,
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mac_data_out_ready => mac_tx_tready,
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mac_data_out_valid => ip_mac_valid,
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mac_data_out_valid => ip_mac_valid,
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mac_data_out_first => ip_mac_first,
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mac_data_out_first => ip_mac_first,
|
mac_data_out_last => ip_mac_last,
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mac_data_out_last => ip_mac_last,
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mac_data_out => ip_mac_data_out,
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mac_data_out => ip_mac_data_out,
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mac_data_in => mac_rx_tdata,
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mac_data_in => mac_rx_tdata,
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mac_data_in_valid => mac_rx_tvalid,
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mac_data_in_valid => mac_rx_tvalid,
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mac_data_in_last => mac_rx_tlast
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mac_data_in_last => mac_rx_tlast
|
);
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);
|
|
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
-- Instantiate the ARP layer
|
-- Instantiate the ARP layer
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
arp_layer : arp
|
arp_layer : arp
|
|
generic map (
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CLOCK_FREQ => CLOCK_FREQ,
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ARP_TIMEOUT => ARP_TIMEOUT
|
|
)
|
Port map(
|
Port map(
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-- request signals
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-- request signals
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arp_req_req => arp_req_req_int,
|
arp_req_req => arp_req_req_int,
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arp_req_rslt => arp_req_rslt_int,
|
arp_req_rslt => arp_req_rslt_int,
|
-- rx signals
|
-- rx signals
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data_in_clk => rx_clk,
|
data_in_clk => rx_clk,
|
reset => reset,
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reset => reset,
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data_in => mac_rx_tdata,
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data_in => mac_rx_tdata,
|
data_in_valid => mac_rx_tvalid,
|
data_in_valid => mac_rx_tvalid,
|
data_in_last => mac_rx_tlast,
|
data_in_last => mac_rx_tlast,
|
-- tx signals
|
-- tx signals
|
mac_tx_req => arp_mac_req,
|
mac_tx_req => arp_mac_req,
|
mac_tx_granted => arp_mac_grant,
|
mac_tx_granted => arp_mac_grant,
|
data_out_clk => tx_clk,
|
data_out_clk => tx_clk,
|
data_out_ready => mac_tx_tready,
|
data_out_ready => mac_tx_tready,
|
data_out_valid => arp_mac_valid,
|
data_out_valid => arp_mac_valid,
|
data_out_first => arp_mac_first,
|
data_out_first => arp_mac_first,
|
data_out_last => arp_mac_last,
|
data_out_last => arp_mac_last,
|
data_out => arp_mac_data_out,
|
data_out => arp_mac_data_out,
|
-- system signals
|
-- system signals
|
our_mac_address => our_mac_address,
|
our_mac_address => our_mac_address,
|
our_ip_address => our_ip_address,
|
our_ip_address => our_ip_address,
|
|
control => control.arp_controls,
|
req_count => arp_pkt_count
|
req_count => arp_pkt_count
|
);
|
);
|
|
|
|
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
-- Instantiate the TX Arbitrator
|
-- Instantiate the TX Arbitrator
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
mac_tx_arb : tx_arbitrator
|
mac_tx_arb : tx_arbitrator
|
Port map(
|
Port map(
|
clk => tx_clk,
|
clk => tx_clk,
|
reset => reset,
|
reset => reset,
|
|
|
req_1 => ip_mac_req,
|
req_1 => ip_mac_req,
|
grant_1 => ip_mac_grant,
|
grant_1 => ip_mac_grant,
|
data_1 => ip_mac_data_out,
|
data_1 => ip_mac_data_out,
|
valid_1 => ip_mac_valid,
|
valid_1 => ip_mac_valid,
|
first_1 => ip_mac_first,
|
first_1 => ip_mac_first,
|
last_1 => ip_mac_last,
|
last_1 => ip_mac_last,
|
|
|
req_2 => arp_mac_req,
|
req_2 => arp_mac_req,
|
grant_2 => arp_mac_grant,
|
grant_2 => arp_mac_grant,
|
data_2 => arp_mac_data_out,
|
data_2 => arp_mac_data_out,
|
valid_2 => arp_mac_valid,
|
valid_2 => arp_mac_valid,
|
first_2 => arp_mac_first,
|
first_2 => arp_mac_first,
|
last_2 => arp_mac_last,
|
last_2 => arp_mac_last,
|
|
|
data => mac_tx_tdata_int,
|
data => mac_tx_tdata_int,
|
valid => mac_tx_tvalid_int,
|
valid => mac_tx_tvalid_int,
|
first => mac_tx_tfirst_int,
|
first => mac_tx_tfirst_int,
|
last => mac_tx_tlast_int
|
last => mac_tx_tlast_int
|
);
|
);
|
|
|
end structural;
|
end structural;
|
|
|
|
|
