| Line 17... |
Line 17... |
-- Revision 0.02 - separated RX and TX clocks
|
-- Revision 0.02 - separated RX and TX clocks
|
-- Revision 0.03 - Added mac_tx_tfirst
|
-- Revision 0.03 - Added mac_tx_tfirst
|
-- Additional Comments:
|
-- Additional Comments:
|
--
|
--
|
----------------------------------------------------------------------------------
|
----------------------------------------------------------------------------------
|
LIBRARY ieee;
|
library ieee;
|
USE ieee.std_logic_1164.ALL;
|
use ieee.std_logic_1164.all;
|
use IEEE.NUMERIC_STD.ALL;
|
use IEEE.NUMERIC_STD.all;
|
use work.axi.all;
|
use work.axi.all;
|
use work.ipv4_types.all;
|
use work.ipv4_types.all;
|
use work.arp_types.all;
|
use work.arp_types.all;
|
use work.arp;
|
use work.arp;
|
use work.arpv2;
|
use work.arpv2;
|
|
|
entity IP_complete_nomac is
|
entity IP_complete_nomac is
|
generic (
|
generic (
|
|
use_arpv2 : boolean := true; -- use ARP with multipule entries. for signel entry, set
|
|
-- to false
|
|
no_default_gateway : boolean := false; -- set to false if communicating with devices accessed
|
|
-- through a "default gateway or router"
|
CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr
|
CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr
|
ARP_TIMEOUT : integer := 60; -- ARP response timeout (s)
|
ARP_TIMEOUT : integer := 60; -- ARP response timeout (s)
|
ARP_MAX_PKT_TMO : integer := 5; -- # wrong nwk pkts received before set error
|
ARP_MAX_PKT_TMO : integer := 5; -- # wrong nwk pkts received before set error
|
MAX_ARP_ENTRIES : integer := 255 -- max entries in the ARP store
|
MAX_ARP_ENTRIES : integer := 255 -- max entries in the ARP store
|
);
|
);
|
Port (
|
port (
|
-- IP Layer signals
|
-- IP Layer signals
|
ip_tx_start : in std_logic;
|
ip_tx_start : in std_logic;
|
ip_tx : in ipv4_tx_type; -- IP tx cxns
|
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_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_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_start : out std_logic; -- indicates receipt of ip frame.
|
ip_rx : out ipv4_rx_type;
|
ip_rx : out ipv4_rx_type;
|
-- system signals
|
-- system signals
|
rx_clk : in STD_LOGIC;
|
rx_clk : in std_logic;
|
tx_clk : in STD_LOGIC;
|
tx_clk : in std_logic;
|
reset : in STD_LOGIC;
|
reset : in std_logic;
|
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0);
|
our_ip_address : in std_logic_vector (31 downto 0);
|
our_mac_address : in std_logic_vector (47 downto 0);
|
our_mac_address : in std_logic_vector (47 downto 0);
|
control : in ip_control_type;
|
control : in ip_control_type;
|
-- status signals
|
-- status signals
|
arp_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- count of arp pkts received
|
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
|
ip_pkt_count : out std_logic_vector(7 downto 0); -- number of IP pkts received for us
|
-- MAC Transmitter
|
-- MAC Transmitter
|
mac_tx_tdata : out std_logic_vector(7 downto 0); -- data byte to tx
|
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_tvalid : out std_logic; -- tdata is valid
|
mac_tx_tready : in std_logic; -- mac is ready to accept data
|
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_tfirst : out std_logic; -- indicates first byte of frame
|
| Line 68... |
Line 72... |
end IP_complete_nomac;
|
end IP_complete_nomac;
|
|
|
|
|
architecture structural of IP_complete_nomac is
|
architecture structural of IP_complete_nomac is
|
|
|
COMPONENT IPv4
|
component IPv4
|
PORT(
|
port(
|
-- IP Layer signals
|
-- IP Layer signals
|
ip_tx_start : in std_logic;
|
ip_tx_start : in std_logic;
|
ip_tx : in ipv4_tx_type; -- IP tx cxns
|
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_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_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_start : out std_logic; -- indicates receipt of ip frame.
|
ip_rx : out ipv4_rx_type;
|
ip_rx : out ipv4_rx_type;
|
-- system control signals
|
-- system control signals
|
rx_clk : in STD_LOGIC;
|
rx_clk : in std_logic;
|
tx_clk : in STD_LOGIC;
|
tx_clk : in std_logic;
|
reset : in STD_LOGIC;
|
reset : in std_logic;
|
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0);
|
our_ip_address : in std_logic_vector (31 downto 0);
|
our_mac_address : in std_logic_vector (47 downto 0);
|
our_mac_address : in std_logic_vector (47 downto 0);
|
-- system status signals
|
-- system status signals
|
rx_pkt_count : out STD_LOGIC_VECTOR(7 downto 0); -- number of IP pkts received for us
|
rx_pkt_count : out std_logic_vector(7 downto 0); -- number of IP pkts received for us
|
-- ARP lookup signals
|
-- ARP lookup signals
|
arp_req_req : out arp_req_req_type;
|
arp_req_req : out arp_req_req_type;
|
arp_req_rslt : in arp_req_rslt_type;
|
arp_req_rslt : in arp_req_rslt_type;
|
-- MAC layer RX signals
|
-- 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 : 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_valid : in std_logic; -- indicates data_in valid on clock
|
mac_data_in_last : in STD_LOGIC; -- indicates last data in frame
|
mac_data_in_last : in std_logic; -- indicates last data in frame
|
-- MAC layer TX signals
|
-- 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_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_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_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_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_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_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)
|
mac_data_out : out std_logic_vector (7 downto 0) -- ethernet frame (from dst mac addr through to last byte of frame)
|
);
|
);
|
END COMPONENT;
|
end component;
|
|
|
COMPONENT arp
|
component arp
|
generic (
|
generic (
|
CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr
|
CLOCK_FREQ : integer := 125000000; -- freq of data_in_clk -- needed to timout cntr
|
ARP_TIMEOUT : integer := 60; -- ARP response timeout (s)
|
ARP_TIMEOUT : integer := 60; -- ARP response timeout (s)
|
ARP_MAX_PKT_TMO : integer := 1; -- (added for compatibility with arpv2. this value not used in this impl)
|
ARP_MAX_PKT_TMO : integer := 1; -- (added for compatibility with arpv2. this value not used in this impl)
|
MAX_ARP_ENTRIES : integer := 1 -- (added for compatibility with arpv2. this value not used in this impl)
|
MAX_ARP_ENTRIES : integer := 1 -- (added for compatibility with arpv2. this value not used in this impl)
|
);
|
);
|
Port (
|
port (
|
-- lookup request signals
|
-- lookup request signals
|
arp_req_req : in arp_req_req_type;
|
arp_req_req : in arp_req_req_type;
|
arp_req_rslt : out arp_req_rslt_type;
|
arp_req_rslt : out arp_req_rslt_type;
|
-- MAC layer RX signals
|
-- MAC layer RX signals
|
data_in_clk : in STD_LOGIC;
|
data_in_clk : in std_logic;
|
reset : 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 : 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_valid : in std_logic; -- indicates data_in valid on clock
|
data_in_last : in STD_LOGIC; -- indicates last data in frame
|
data_in_last : in std_logic; -- indicates last data in frame
|
-- MAC layer TX signals
|
-- 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_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_tx_granted : in std_logic; -- indicates that access to channel has been granted
|
data_out_clk : in std_logic;
|
data_out_clk : in std_logic;
|
data_out_ready : in std_logic; -- indicates system ready to consume data
|
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_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_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_last : out std_logic; -- with data out valid indicates the last byte of a frame
|
data_out : out std_logic_vector (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame)
|
data_out : out std_logic_vector (7 downto 0); -- ethernet frame (from dst mac addr through to last byte of frame)
|
-- system signals
|
-- system signals
|
our_mac_address : in STD_LOGIC_VECTOR (47 downto 0);
|
our_mac_address : in std_logic_vector (47 downto 0);
|
our_ip_address : in STD_LOGIC_VECTOR (31 downto 0);
|
our_ip_address : in std_logic_vector (31 downto 0);
|
control : in arp_control_type;
|
control : in arp_control_type;
|
req_count : out STD_LOGIC_VECTOR(7 downto 0) -- count of arp pkts received
|
req_count : out std_logic_vector(7 downto 0) -- count of arp pkts received
|
);
|
);
|
END COMPONENT;
|
end component;
|
|
|
COMPONENT tx_arbitrator
|
component tx_arbitrator
|
PORT(
|
port(
|
clk : in std_logic;
|
clk : in std_logic;
|
reset : in std_logic;
|
reset : in std_logic;
|
|
|
req_1 : in std_logic;
|
req_1 : in std_logic;
|
grant_1 : out std_logic;
|
grant_1 : out std_logic;
|
| Line 161... |
Line 165... |
data : out std_logic_vector(7 downto 0); -- data byte to tx
|
data : out std_logic_vector(7 downto 0); -- data byte to tx
|
valid : out std_logic; -- tdata is valid
|
valid : out std_logic; -- tdata is valid
|
first : out std_logic; -- indicates first byte of frame
|
first : out std_logic; -- indicates first byte of frame
|
last : out std_logic -- indicates last byte of frame
|
last : out std_logic -- indicates last byte of frame
|
);
|
);
|
END COMPONENT;
|
end component;
|
|
|
|
|
-------------------
|
-------------------
|
-- Configuration
|
-- Configuration
|
--
|
--
|
| Line 173... |
Line 177... |
-- implementation of the ARP layer to use
|
-- implementation of the ARP layer to use
|
-------------------
|
-------------------
|
|
|
|
|
-- for arp_layer : arp use entity work.arp; -- single slot arbitrator
|
-- for arp_layer : arp use entity work.arp; -- single slot arbitrator
|
for arp_layer : arp use entity work.arpv2; -- multislot arbitrator
|
-- for arp_layer : arp use entity work.arpv2; -- multislot arbitrator
|
|
|
|
|
|
|
---------------------------
|
---------------------------
|
-- Signals
|
-- Signals
|
| Line 223... |
Line 227... |
|
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
-- Instantiate the IP layer
|
-- Instantiate the IP layer
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
|
|
IP_layer : IPv4 PORT MAP
|
IP_layer : IPv4 port map
|
(
|
(
|
ip_tx_start => ip_tx_start,
|
ip_tx_start => ip_tx_start,
|
ip_tx => ip_tx,
|
ip_tx => ip_tx,
|
ip_tx_result => ip_tx_result,
|
ip_tx_result => ip_tx_result,
|
ip_tx_data_out_ready=> ip_tx_data_out_ready,
|
ip_tx_data_out_ready=> ip_tx_data_out_ready,
|
| Line 254... |
Line 258... |
);
|
);
|
|
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
-- Instantiate the ARP layer
|
-- Instantiate the ARP layer
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
arp_layer : arp
|
signle_entry_arp: if (not use_arpv2) generate
|
|
arp_layer : entity work.arp
|
generic map (
|
generic map (
|
CLOCK_FREQ => CLOCK_FREQ,
|
CLOCK_FREQ => CLOCK_FREQ,
|
ARP_TIMEOUT => ARP_TIMEOUT,
|
ARP_TIMEOUT => ARP_TIMEOUT,
|
ARP_MAX_PKT_TMO => ARP_MAX_PKT_TMO,
|
ARP_MAX_PKT_TMO => ARP_MAX_PKT_TMO,
|
MAX_ARP_ENTRIES => MAX_ARP_ENTRIES
|
MAX_ARP_ENTRIES => MAX_ARP_ENTRIES
|
)
|
)
|
Port map(
|
port map(
|
-- request signals
|
-- request signals
|
arp_req_req => arp_req_req_int,
|
arp_req_req => arp_req_req_int,
|
arp_req_rslt => arp_req_rslt_int,
|
arp_req_rslt => arp_req_rslt_int,
|
-- rx signals
|
-- rx signals
|
data_in_clk => rx_clk,
|
data_in_clk => rx_clk,
|
| Line 286... |
Line 291... |
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,
|
control => control.arp_controls,
|
req_count => arp_pkt_count
|
req_count => arp_pkt_count
|
);
|
);
|
|
end generate signle_entry_arp;
|
|
|
|
multi_entry_arp: if (use_arpv2) generate
|
|
arp_layer : entity work.arpv2
|
|
generic map (
|
|
no_default_gateway => no_default_gateway,
|
|
CLOCK_FREQ => CLOCK_FREQ,
|
|
ARP_TIMEOUT => ARP_TIMEOUT,
|
|
ARP_MAX_PKT_TMO => ARP_MAX_PKT_TMO,
|
|
MAX_ARP_ENTRIES => MAX_ARP_ENTRIES
|
|
)
|
|
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
|
|
);
|
|
end generate multi_entry_arp;
|
|
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
-- 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,
|
