?? scinode1.vhd
字號:
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
use ieee.std_logic_signed.all;
entity scinode1 is
port( reset, clk: in std_logic;
vertical_data_in: in std_logic_vector(15 downto 0);
horizontal_data_in: in std_logic_vector(15 downto 0);
vertical_data_out: out std_logic_vector(15 downto 0);
horizontal_data_out: out std_logic_vector(15 downto 0);
global_cnt: in integer range 0 to 110);
end scinode1;
architecture spec of scinode1 is
type PACKET_SIZE is array (0 to 4) of std_logic_vector(15 downto 0); --five 16-bit entry, and the field is specified following
type FIFO is array( 0 to 3) of PACKET_SIZE;
signal bypass_fifo: FIFO;
type REC_QUEUE_ENTRY_SIZE is array(0 to 2) of std_logic_vector(15 downto 0);
type REC_QUEUE is array (0 to 3) of REC_QUEUE_ENTRY_SIZE; --every queue have four packet entry
signal req_rec_q, res_rec_q: REC_QUEUE;
type XMIT_QUEUE_ENTRY_SIZE is array(0 to 3) of std_logic_vector(15 downto 0);
type XMIT_QUEUE is array (0 to 3) of XMIT_QUEUE_ENTRY_SIZE;
signal req_xmit_q, res_xmit_q: XMIT_QUEUE;
--signal processing_data: PACKET_SIZE; --processor manupulate the packet;
signal data_in, data_out: std_logic_vector(15 downto 0);
alias targetId: std_logic_vector(15 downto 0) is data_in; --first 8 bit to indicate the processor
--second 8 bit to indicate the offset address
alias command: std_logic_vector(1 downto 0) is data_in(1 downto 0); --only 5 type command: req_send, req_echo, res_send, res_echo, idle
alias sourceId: std_logic_vector(15 downto 0) is data_in; --first 8 bit to indicate the processor, second 8 bit indicate the offset
alias Data: std_logic_vector(15 downto 0) is data_in;
alias AddressOffset: std_logic_vector(4 downto 0) is data_in(4 downto 0); --address_offset
signal req_rec_q_first: integer range 0 to 3; --indicate the first entry of fifo
signal req_rec_q_last: integer range 0 to 3; --indicate the last entru of fifo
signal res_rec_q_first, res_rec_q_last: integer range 0 to 3;
signal req_xmit_q_first, req_xmit_q_last: integer range 0 to 3;
signal res_xmit_q_first, res_xmit_q_last: integer range 0 to 3;
signal bypass_fifo_first, bypass_fifo_last: integer range 0 to 3;
signal counter: integer range 0 to 5; --count the half word from reciever queue
--count the half word from xmiter queue
signal priority_flg: integer range 0 to 3; --select the mux output
signal xmit_r_r_flg: std_logic; --select the xmit output is from requset queue or response queue
signal where_to_store: integer range 0 to 4; --select req_rec_q or res_rec_q or bypass_fifo
signal where_to_send: integer range 0 to 4; --0 indicate req_q, 1 indicate res_q, 2 indicate bypass_fifo, 3 indicate none to send
constant AddressId: std_logic_vector(7 downto 0) := "00000001";
type FLAG is array(0 to 3) of integer range 0 to 2;
signal req_xmit_q_flg: FLAG; --1 indicate pending, 2 indicate resend the packet
signal res_xmit_q_flg: FLAG; --1 indicate pending, 2 indicate resend the packet
signal echo_flag: integer range 0 to 2; --indicate if the packet is echo or not!!
signal echo_sourceId: std_logic_vector(7 downto 0);
signal req_rec_q_full, res_rec_q_full: std_logic;
--signal req_xmit_q_full, res_xmit_q_full: std_logic; --flag set when queue is full
signal stripper_q: XMIT_QUEUE; --the queue is to keep the echo resend packet when the reciever queue is full
signal stripper_q_first, stripper_q_last: integer range 0 to 3;
type REG_FILE is array(0 to 8) of std_logic_vector(7 downto 0);
signal a, b: REG_FILE; --a,b for each x
signal process_priority: integer range 0 to 2;--0 none, 1 indicate req_rec_q, 2 indicate res_rec_q
signal a_tmp, b_tmp: REG_FILE;
signal bypass_fifo_ptr: integer range 0 to 3;
constant w1_r: std_logic_vector(4 downto 0) := "01100"; --w(1) real part,0.766
constant w1_c: std_logic_vector(4 downto 0) := "10110"; --w(1) imaginary part,-0.643
constant w2_r: std_logic_vector(4 downto 0) := "00010"; --w(2) real part,0.174
constant w2_c: std_logic_vector(4 downto 0) := "10001"; --w(2) imaginary part,-0.985
constant w3_r: std_logic_vector(4 downto 0) := "11000"; --w(3) real part,-0.5
constant w3_c: std_logic_vector(4 downto 0) := "10011"; --w(3) imaginary part,-0.866
constant w4_r: std_logic_vector(4 downto 0) := "10001"; --w(4) real part,-0.94
constant w4_c: std_logic_vector(4 downto 0) := "11011"; --w(4) imaginary part,-0.342
constant w5_r: std_logic_vector(4 downto 0) := "10001"; --w(5) real part,-0.94
constant w5_c: std_logic_vector(4 downto 0) := "00101"; --w(5) imaginary part,0.342
constant w6_r: std_logic_vector(4 downto 0) := "11000"; --w(6) real part,-0.5
constant w6_c: std_logic_vector(4 downto 0) := "01101"; --w(6) imaginary part,0.866
constant w7_r: std_logic_vector(4 downto 0) := "00010"; --w(7) real part 0.174
constant w7_c: std_logic_vector(4 downto 0) := "01111"; --w(7) imaginary part,0.985
constant w8_r: std_logic_vector(4 downto 0) := "01100"; --w(8) real part,0.766
constant w8_c: std_logic_vector(4 downto 0) := "01010"; --w(8) imaginary part,0.643
type TMP_REG_FILE is array(0 to 8) of std_logic_vector(12 downto 0);
signal a_tmp1, b_tmp1: TMP_REG_FILE;
begin
process( reset, clk )
begin
if( reset = '1' ) then
bypass_fifo(0)(0) <= "1111111111111111"; bypass_fifo(0)(1) <= "1111111111111111";
bypass_fifo(0)(2) <= "1111111111111111"; bypass_fifo(0)(3) <= "1111111111111111";
bypass_fifo(0)(4) <= "1111111111111111"; bypass_fifo(1)(0) <= "1111111111111111";
bypass_fifo(1)(1) <= "1111111111111111"; bypass_fifo(1)(2) <= "1111111111111111";
bypass_fifo(1)(3) <= "1111111111111111"; bypass_fifo(1)(4) <= "1111111111111111";
bypass_fifo(2)(0) <= "1111111111111111"; bypass_fifo(2)(1) <= "1111111111111111";
bypass_fifo(2)(2) <= "1111111111111111"; bypass_fifo(2)(3) <= "1111111111111111";
bypass_fifo(2)(4) <= "1111111111111111"; bypass_fifo(3)(0) <= "1111111111111111";
bypass_fifo(3)(1) <= "1111111111111111"; bypass_fifo(3)(2) <= "1111111111111111";
bypass_fifo(3)(3) <= "1111111111111111"; bypass_fifo(3)(4) <= "1111111111111111";
req_rec_q(0)(0) <= "0000000000000000"; req_rec_q(0)(1) <= "0000000000000000";
req_rec_q(0)(2) <= "0000000000000000"; --req_rec_q(0)(3) <= "0000000000000000";
req_rec_q(1)(0) <= "0000000000000000"; req_rec_q(1)(1) <= "0000000000000000";
req_rec_q(1)(2) <= "0000000000000000"; --req_rec_q(1)(3) <= "0000000000000000";
req_rec_q(2)(0) <= "0000000000000000"; req_rec_q(2)(1) <= "0000000000000000";
req_rec_q(2)(2) <= "0000000000000000"; --req_rec_q(0)(3) <= "0000000000000000";
req_rec_q(3)(0) <= "0000000000000000"; req_rec_q(3)(1) <= "0000000000000000";
req_rec_q(3)(2) <= "0000000000000000"; --req_rec_q(1)(3) <= "0000000000000000";
res_rec_q(0)(0) <= "0000000000000000"; res_rec_q(0)(1) <= "0000000000000000";
res_rec_q(0)(2) <= "0000000000000000"; --res_rec_q(0)(3) <= "0000000000000000";
res_rec_q(1)(0) <= "0000000000000000"; res_rec_q(1)(1) <= "0000000000000000";
res_rec_q(1)(2) <= "0000000000000000"; --res_rec_q(1)(3) <= "0000000000000000";
res_rec_q(2)(0) <= "0000000000000000"; res_rec_q(2)(1) <= "0000000000000000";
res_rec_q(2)(2) <= "0000000000000000"; --res_rec_q(1)(3) <= "0000000000000000";
res_rec_q(3)(0) <= "0000000000000000"; res_rec_q(3)(1) <= "0000000000000000";
res_rec_q(3)(2) <= "0000000000000000"; --res_rec_q(1)(3) <= "0000000000000000";
req_xmit_q(0)(0) <= "0000000000000000"; req_xmit_q(0)(1) <= "0000000000000000";
req_xmit_q(0)(2) <= "0000000000000000"; req_xmit_q(0)(3) <= "0000000000000000";
req_xmit_q(1)(0) <= "0000000000000000"; req_xmit_q(1)(1) <= "0000000000000000";
req_xmit_q(1)(2) <= "0000000000000000"; req_xmit_q(1)(3) <= "0000000000000000";
res_xmit_q(0)(0) <= "0000000000000000"; res_xmit_q(0)(1) <= "0000000000000000";
res_xmit_q(0)(2) <= "0000000000000000"; res_xmit_q(0)(3) <= "0000000000000000";
res_xmit_q(1)(0) <= "0000000000000000"; res_xmit_q(1)(1) <= "0000000000000000";
res_xmit_q(1)(2) <= "0000000000000000"; res_xmit_q(1)(3) <= "0000000000000000";
stripper_q(0)(0) <= "1111111111111111"; stripper_q(0)(1) <= "1111111111111111";
stripper_q(0)(2) <= "1111111111111111"; stripper_q(0)(3) <= "1111111111111111";
stripper_q(1)(0) <= "1111111111111111"; stripper_q(1)(1) <= "1111111111111111";
stripper_q(1)(2) <= "1111111111111111"; stripper_q(1)(3) <= "1111111111111111";
stripper_q(2)(0) <= "1111111111111111"; stripper_q(2)(1) <= "1111111111111111";
stripper_q(2)(2) <= "1111111111111111"; stripper_q(2)(3) <= "1111111111111111";
stripper_q(3)(0) <= "1111111111111111"; stripper_q(3)(1) <= "1111111111111111";
stripper_q(3)(2) <= "1111111111111111"; stripper_q(3)(3) <= "1111111111111111";
counter <= 0;
priority_flg <= 0; xmit_r_r_flg <= '0';
req_rec_q_first <= 0; req_rec_q_last <= 0;
req_xmit_q_first <= 0; res_xmit_q_first <= 0;
bypass_fifo_first <= 0; bypass_fifo_last <= 0;
echo_flag <= 0;
where_to_store <= 0; where_to_send <= 0;
req_rec_q_full <= '0'; res_rec_q_full <= '0';
stripper_q_first <= 0; stripper_q_last <= 0;
a(0) <= "11111111"; a(1) <= "00000111";
a(2) <= "00001000"; a(3) <= "00000010";
a(4) <= "11111000"; a(5) <= "00000100";
a(6) <= "00000011"; a(7) <= "00001000";
a(8) <= "00001000";
b(0) <= "11111010"; b(1) <= "11111100";
b(2) <= "11111011"; b(3) <= "00000110";
b(4) <= "00000011"; b(5) <= "00001000";
b(6) <= "11111110"; b(7) <= "00000010";
b(8) <= "11111100";
elsif( rising_edge( clk ) ) then
--Xmiter segment code
case counter is
when 5 =>
if( global_cnt = 0 ) then
where_to_send <= 4;
data_out <= "1111111111111111";
elsif( priority_flg /= 3 and stripper_q( stripper_q_first )(0) /= "1111111111111111" ) then
data_out <= stripper_q( stripper_q_first )(0);
priority_flg <= 3;
where_to_send <= 3;
else
case priority_flg is
when 0 => --request queue's priority
if( req_xmit_q_first /= req_xmit_q_last and req_xmit_q_flg( req_xmit_q_first ) /= 1 ) then --resend the packet
data_out <= req_xmit_q( req_xmit_q_first )(0);
where_to_send <= 0;
req_xmit_q_flg( req_xmit_q_first ) <= 1;
elsif( res_xmit_q_first /= res_xmit_q_last and res_xmit_q_flg( res_xmit_q_first ) /= 1) then --no req_xmit packet to send & verify if res_xmit queue resend?
data_out <= res_xmit_q( res_xmit_q_first )(0);
where_to_send <= 1;
res_xmit_q_flg( res_xmit_q_first ) <= 1;
elsif( bypass_fifo( bypass_fifo_first )(0) /= "1111111111111111" ) then
data_out <= bypass_fifo( bypass_fifo_first )(0);
where_to_send <= 2;
else
where_to_send <= 4; --nothing to send, send idle packet
data_out <= "1111111111111111";
end if;
when 1 => --response queue's priority
if( res_xmit_q_first /= res_xmit_q_last and res_xmit_q_flg( res_xmit_q_first ) /= 1 ) then --no req_xmit packet to send & verify if res_xmit queue resend?
data_out <= res_xmit_q( res_xmit_q_first )(0);
where_to_send <= 1;
res_xmit_q_flg( res_xmit_q_first ) <= 1;
elsif( bypass_fifo( bypass_fifo_first )(0) /= "1111111111111111" ) then
data_out <= bypass_fifo( bypass_fifo_first )(0);
where_to_send <= 2;
elsif( req_xmit_q_first /= req_xmit_q_last and req_xmit_q_flg( req_xmit_q_first ) /= 1 ) then --the next want send packet, if 2 indicate none to send
data_out <= req_xmit_q( req_xmit_q_first )(0);
where_to_send <= 0;
req_xmit_q_flg( req_xmit_q_first ) <= 1;
else
where_to_send <= 4;
data_out <= "1111111111111111";
end if;
when 2 => --bypass_fifo's priority
if( bypass_fifo( bypass_fifo_first )(0) /= "1111111111111111" ) then
data_out <= bypass_fifo( bypass_fifo_first )(0);
where_to_send <= 2;
elsif( req_xmit_q_first /= req_xmit_q_last and req_xmit_q_flg( req_xmit_q_first ) /= 1 ) then --resend the packet
data_out <= req_xmit_q( req_xmit_q_first )(0);
where_to_send <= 0;
req_xmit_q_flg( req_xmit_q_first ) <= 1;
elsif( res_xmit_q_first /= res_xmit_q_last and res_xmit_q_flg( res_xmit_q_first ) /= 1 ) then --no req_xmit packet to send & verify if res_xmit queue resend?
data_out <= res_xmit_q( res_xmit_q_first )(0);
where_to_send <= 1;
res_xmit_q_flg( res_xmit_q_first ) <= 1;
else
where_to_send <= 4;
data_out <= "1111111111111111";
end if;
when others =>
end case;
end if;
-- counter <= 1;
when 0 =>
if( global_cnt = 0 ) then
where_to_send <= 4;
data_out <= "1111111111111111";
else
case where_to_send is
when 0 => --send the request command field packet
data_out <= req_xmit_q( req_xmit_q_first )(1);
when 1 => --send the response command field packet
data_out <= res_xmit_q( res_xmit_q_first )(1);
when 2 => --bypass_fifo
data_out <= bypass_fifo( bypass_fifo_first )(1);
when 3 =>
data_out <= stripper_q( stripper_q_first )(1);
when others =>
data_out <= "1111111111111111";
end case;
end if;
-- counter <= 2;
when 1 =>
if( global_cnt = 0 ) then
where_to_send <= 4;
data_out <= "1111111111111111";
else
case where_to_send is
when 0 => --send request sourceId field packet
data_out <= "00000000" & AddressId;
when 1 => --send the response sourceId field packet
data_out <= "00000000" & AddressId;
when 2 =>
data_out <= bypass_fifo( bypass_fifo_first )(2);
when 3 =>
data_out <= stripper_q( stripper_q_first )(2);
when others =>
data_out <= "1111111111111111";
end case;
end if;
-- counter <= 3;
when 2 =>
if( global_cnt = 0 ) then
where_to_send <= 4;
data_out <= "1111111111111111";
else
case where_to_send is
when 0 => --send the request addressoffset field packet
data_out <= req_xmit_q( req_xmit_q_first )(2);
when 1 => --send the response addressoffset field packet
data_out <= res_xmit_q( res_xmit_q_first )(2);
when 2 =>
data_out <= bypass_fifo( bypass_fifo_first )(3);
bypass_fifo_ptr <= bypass_fifo_first;
if( bypass_fifo_first = 3 ) then
bypass_fifo_first <= 0;
else
bypass_fifo_first <= bypass_fifo_first + 1;
end if;
when 3 =>
data_out <= stripper_q( stripper_q_first )(3);
stripper_q( stripper_q_first )(0) <= "1111111111111111"; stripper_q( stripper_q_first )(1) <= "1111111111111111";
stripper_q( stripper_q_first )(2) <= "1111111111111111"; stripper_q( stripper_q_first )(3) <= "1111111111111111";
if( stripper_q_first = 3 ) then
stripper_q_first <= 0;
else
stripper_q_first <= stripper_q_first + 1;
end if;
when others =>
data_out <= "1111111111111111";
end case;
-- counter <= 4;
end if;
when 3 =>
if( global_cnt = 0 ) then
where_to_send <= 4;
data_out <= "1111111111111111";
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