public
/
hdet
1
0
Fork 0
Code Pull Requests Releases Activity
hdet/fpga/src/vendor/xilinx/atlys_ddr2/ddr2/example_design/rtl/traffic_gen/sp6_data_gen.vhd

794 lines
36 KiB
VHDL
Executable File
Raw Blame History

--*****************************************************************************
-- (c) Copyright 2009 Xilinx, Inc. All rights reserved.
--
-- This file contains confidential and proprietary information
-- of Xilinx, Inc. and is protected under U.S. and
-- international copyright and other intellectual property
-- laws.
--
-- DISCLAIMER
-- This disclaimer is not a license and does not grant any
-- rights to the materials distributed herewith. Except as
-- otherwise provided in a valid license issued to you by
-- Xilinx, and to the maximum extent permitted by applicable
-- law: (1) THESE MATERIALS ARE MADE AVAILABLE "AS IS" AND
-- WITH ALL FAULTS, AND XILINX HEREBY DISCLAIMS ALL WARRANTIES
-- AND CONDITIONS, EXPRESS, IMPLIED, OR STATUTORY, INCLUDING
-- BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, NON-
-- INFRINGEMENT, OR FITNESS FOR ANY PARTICULAR PURPOSE; and
-- (2) Xilinx shall not be liable (whether in contract or tort,
-- including negligence, or under any other theory of
-- liability) for any loss or damage of any kind or nature
-- related to, arising under or in connection with these
-- materials, including for any direct, or any indirect,
-- special, incidental, or consequential loss or damage
-- (including loss of data, profits, goodwill, or any type of
-- loss or damage suffered as a result of any action brought
-- by a third party) even if such damage or loss was
-- reasonably foreseeable or Xilinx had been advised of the
-- possibility of the same.
--
-- CRITICAL APPLICATIONS
-- Xilinx products are not designed or intended to be fail-
-- safe, or for use in any application requiring fail-safe
-- performance, such as life-support or safety devices or
-- systems, Class III medical devices, nuclear facilities,
-- applications related to the deployment of airbags, or any
-- other applications that could lead to death, personal
-- injury, or severe property or environmental damage
-- (individually and collectively, "Critical
-- Applications"). Customer assumes the sole risk and
-- liability of any use of Xilinx products in Critical
-- Applications, subject only to applicable laws and
-- regulations governing limitations on product liability.
--
-- THIS COPYRIGHT NOTICE AND DISCLAIMER MUST BE RETAINED AS
-- PART OF THIS FILE AT ALL TIMES.
--
--*****************************************************************************
-- ____ ____
-- / /\/ /
-- /___/ \ / Vendor: Xilinx
-- \ \ \/ Version: %version
-- \ \ Application: MIG
-- / / Filename: sp6_data_gen.vhd
-- /___/ /\ Date Last Modified: $Date: 2011/06/02 07:16:40 $
-- \ \ / \ Date Created: Jul 03 2009
-- \___\/\___\
--
-- Device: Spartan6
-- Design Name: DDR/DDR2/DDR3/LPDDR
-- Purpose: This module generates different data pattern as described in
-- parameter DATA_PATTERN and is set up for Spartan 6 family.
-- Reference:
-- Revision History:
--*****************************************************************************
LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.std_logic_unsigned.all;
USE ieee.numeric_std.all;
entity sp6_data_gen is
generic (
ADDR_WIDTH : integer := 32;
BL_WIDTH : integer := 6;
DWIDTH : integer := 32;
DATA_PATTERN : string := "DGEN_ALL"; --"DGEN__HAMMER", "DGEN_WALING1","DGEN_WALING0","DGEN_ADDR","DGEN_NEIGHBOR","DGEN_PRBS","DGEN_ALL"
NUM_DQ_PINS : integer := 8;
COLUMN_WIDTH : integer := 10
);
port (
clk_i : in std_logic; --
rst_i : in std_logic;
prbs_fseed_i : in std_logic_vector(31 downto 0);
data_mode_i : in std_logic_vector(3 downto 0); -- "00" = bram;
data_rdy_i : in std_logic;
cmd_startA : in std_logic;
cmd_startB : in std_logic;
cmd_startC : in std_logic;
cmd_startD : in std_logic;
cmd_startE : in std_logic;
fixed_data_i : in std_logic_vector(DWIDTH - 1 downto 0);
addr_i : in std_logic_vector(ADDR_WIDTH - 1 downto 0); -- generated address used to determine data pattern.
user_burst_cnt : in std_logic_vector(6 downto 0); -- generated burst length for control the burst data
fifo_rdy_i : in std_logic; -- connect from mcb_wr_full when used as wr_data_gen
-- connect from mcb_rd_empty when used as rd_data_gen
-- When both data_rdy and data_valid is asserted, the ouput data is valid.
data_o : out std_logic_vector(DWIDTH - 1 downto 0) -- generated data pattern
);
end entity sp6_data_gen;
architecture trans of sp6_data_gen is
COMPONENT data_prbs_gen IS
GENERIC (
EYE_TEST : STRING := "FALSE";
PRBS_WIDTH : INTEGER := 32;
SEED_WIDTH : INTEGER := 32
);
PORT (
clk_i : IN STD_LOGIC;
clk_en : IN STD_LOGIC;
rst_i : IN STD_LOGIC;
prbs_fseed_i : IN STD_LOGIC_VECTOR(31 DOWNTO 0);
prbs_seed_init : IN STD_LOGIC;
prbs_seed_i : IN STD_LOGIC_VECTOR(PRBS_WIDTH - 1 DOWNTO 0);
prbs_o : OUT STD_LOGIC_VECTOR(PRBS_WIDTH - 1 DOWNTO 0)
);
END COMPONENT;
--
signal prbs_data : std_logic_vector(31 downto 0);
signal adata : std_logic_vector(31 downto 0);
signal hdata : std_logic_vector(DWIDTH - 1 downto 0);
signal ndata : std_logic_vector(DWIDTH - 1 downto 0);
signal w1data : std_logic_vector(DWIDTH - 1 downto 0);
signal data : std_logic_vector(DWIDTH - 1 downto 0);
signal burst_count_reached2 : std_logic;
signal data_valid : std_logic;
signal walk_cnt : std_logic_vector(2 downto 0);
signal user_address : std_logic_vector(ADDR_WIDTH - 1 downto 0);
signal i : integer;
signal j : integer;
signal user_bl : std_logic_vector(BL_WIDTH - 1 downto 0);
signal BLANK : std_logic_vector(7 downto 0);
signal SHIFT_0 : std_logic_vector(7 downto 0);
signal SHIFT_1 : std_logic_vector(7 downto 0);
signal SHIFT_2 : std_logic_vector(7 downto 0);
signal SHIFT_3 : std_logic_vector(7 downto 0);
signal SHIFT_4 : std_logic_vector(7 downto 0);
signal SHIFT_5 : std_logic_vector(7 downto 0);
signal SHIFT_6 : std_logic_vector(7 downto 0);
signal SHIFT_7 : std_logic_vector(7 downto 0);
signal SHIFTB_0 : std_logic_vector(31 downto 0);
signal SHIFTB_1 : std_logic_vector(31 downto 0);
signal SHIFTB_2 : std_logic_vector(31 downto 0);
signal SHIFTB_3 : std_logic_vector(31 downto 0);
signal SHIFTB_4 : std_logic_vector(31 downto 0);
signal SHIFTB_5 : std_logic_vector(31 downto 0);
signal SHIFTB_6 : std_logic_vector(31 downto 0);
signal SHIFTB_7 : std_logic_vector(31 downto 0);
signal TSTB : std_logic_vector(3 downto 0);
--*********************************************************************************************
-- 4'b0000: data = 32'b0; //bram
-- 4'b0001: data = 32'b0; // fixed
-- address as data
-- DGEN_HAMMER
-- DGEN_NEIGHBOUR
-- DGEN_WALKING1
-- DGEN_WALKING0
--bram
-- fixed
-- address as data
-- DGEN_HAMMER
-- DGEN_NEIGHBOUR
-- DGEN_WALKING1
-- DGEN_WALKING0
--bram
-- fixed
-- address as data
-- DGEN_HAMMER
-- DGEN_NEIGHBOUR
-- DGEN_WALKING1
-- DGEN_WALKING0
-- WALKING ONES:
-- WALKING ONE
-- NEIGHBOR ONE
-- WALKING ZERO
-- WALKING ONE
-- NEIGHBOR ONE
-- WALKING ZERO
signal tmpdata : std_logic_vector(DWIDTH - 1 downto 0);
signal ndata_rising : std_logic;
signal shift_en : std_logic;
signal data_clk_en : std_logic;
SIGNAL ZEROS : STD_LOGIC_VECTOR(DWIDTH - 1 DOWNTO 0) ;--:= (others => '0');
begin
ZEROS <= (others => '0');
data_o <= data;
xhdl0 : if (DWIDTH = 32) generate
process (adata, hdata, ndata, w1data, prbs_data, data_mode_i,fixed_data_i)
begin
case data_mode_i is
when "0001" =>
data <= fixed_data_i;
when "0010" =>
data <= adata;
when "0011" =>
data <= hdata;
when "0100" =>
data <= ndata;
when "0101" =>
data <= w1data;
when "0110" =>
data <= w1data;
when "0111" =>
data <= prbs_data;
WHEN OTHERS =>
data <= (others => '0');
END CASE;
END PROCESS;
end generate;
xhdl1 : if (DWIDTH = 64) generate
process (adata, hdata, ndata, w1data, prbs_data, data_mode_i,fixed_data_i)
begin
case data_mode_i is
when "0000" =>
data <= (others => '0');
when "0001" =>
data <= fixed_data_i;
when "0010" =>
-- data <= (adata & adata)(31 downto 0);
data <= (adata & adata);
when "0011" =>
data <= hdata;
when "0100" =>
data <= ndata;
when "0101" =>
data <= w1data;
when "0110" =>
data <= w1data;
when "0111" =>
-- data <= (prbs_data & prbs_data)(31 downto 0);
data <= (prbs_data & prbs_data);
when others =>
data <= (others => '0');
end case;
end process;
end generate;
xhdl2 : if (DWIDTH = 128) generate
process (adata, hdata, ndata, w1data, prbs_data, data_mode_i,fixed_data_i)
begin
case data_mode_i is
when "0000" =>
data <= (others => '0');
when "0001" =>
data <= fixed_data_i;
when "0010" =>
-- data <= (adata & adata & adata & adata)(31 downto 0);
data <= (adata & adata & adata & adata);
when "0011" =>
data <= hdata;
when "0100" =>
data <= ndata;
when "0101" =>
data <= w1data;
when "0110" =>
data <= w1data;
when "0111" =>
-- data <= (prbs_data & prbs_data & prbs_data & prbs_data)(31 downto 0);
data <= (prbs_data & prbs_data & prbs_data & prbs_data);
when others =>
data <= (others => '0');--"00000000000000000000000000000000";
end case;
end process;
end generate;
xhdl3 : if ((DWIDTH = 64) or (DWIDTH = 128)) generate
process (data_mode_i)
begin
if (data_mode_i = "0101" or data_mode_i = "0100") then
BLANK <= "00000000";
SHIFT_0 <= "00000001";
SHIFT_1 <= "00000010";
SHIFT_2 <= "00000100";
SHIFT_3 <= "00001000";
SHIFT_4 <= "00010000";
SHIFT_5 <= "00100000";
SHIFT_6 <= "01000000";
SHIFT_7 <= "10000000";
elsif (data_mode_i = "0100") then
BLANK <= "00000000";
SHIFT_0 <= "00000001";
SHIFT_1 <= "00000010";
SHIFT_2 <= "00000100";
SHIFT_3 <= "00001000";
SHIFT_4 <= "00010000";
SHIFT_5 <= "00100000";
SHIFT_6 <= "01000000";
SHIFT_7 <= "10000000";
elsif (data_mode_i = "0110") then
BLANK <= "11111111";
SHIFT_0 <= "11111110";
SHIFT_1 <= "11111101";
SHIFT_2 <= "11111011";
SHIFT_3 <= "11110111";
SHIFT_4 <= "11101111";
SHIFT_5 <= "11011111";
SHIFT_6 <= "10111111";
SHIFT_7 <= "01111111";
else
BLANK <= "11111111";
SHIFT_0 <= "11111110";
SHIFT_1 <= "11111101";
SHIFT_2 <= "11111011";
SHIFT_3 <= "11110111";
SHIFT_4 <= "11101111";
SHIFT_5 <= "11011111";
SHIFT_6 <= "10111111";
SHIFT_7 <= "01111111";
end if;
end process;
end generate;
process (data_mode_i)
begin
if (data_mode_i = "0101") then
SHIFTB_0 <= "00000000000000100000000000000001";
SHIFTB_1 <= "00000000000010000000000000000100";
SHIFTB_2 <= "00000000001000000000000000010000";
SHIFTB_3 <= "00000000100000000000000001000000";
SHIFTB_4 <= "00000010000000000000000100000000";
SHIFTB_5 <= "00001000000000000000010000000000";
SHIFTB_6 <= "00100000000000000001000000000000";
SHIFTB_7 <= "10000000000000000100000000000000";
elsif (data_mode_i = "0100") then
SHIFTB_0 <= "00000000000000000000000000000001";
SHIFTB_1 <= "00000000000000000000000000000010";
SHIFTB_2 <= "00000000000000000000000000000100";
SHIFTB_3 <= "00000000000000000000000000001000";
SHIFTB_4 <= "00000000000000000000000000010000";
SHIFTB_5 <= "00000000000000000000000000100000";
SHIFTB_6 <= "00000000000000000000000001000000";
SHIFTB_7 <= "00000000000000000000000010000000";
else
SHIFTB_0 <= "11111111111111011111111111111110";
SHIFTB_1 <= "11111111111101111111111111111011";
SHIFTB_2 <= "11111111110111111111111111101111";
SHIFTB_3 <= "11111111011111111111111110111111";
SHIFTB_4 <= "11111101111111111111111011111111";
SHIFTB_5 <= "11110111111111111111101111111111";
SHIFTB_6 <= "11011111111111111110111111111111";
SHIFTB_7 <= "01111111111111111011111111111111";
end if;
end process;
xhdl4 : if (DWIDTH = 32 and (DATA_PATTERN = "DGEN_WALKING0" or DATA_PATTERN = "DGEN_WALKING1" or DATA_PATTERN = "DGEN_ALL")) generate
process (clk_i)
begin
if (clk_i'event and clk_i = '1') then
if (rst_i = '1') then
w1data <= (others => '0');
ndata_rising <= '1';
shift_en <= '0';
elsif ((fifo_rdy_i = '1' and user_burst_cnt /= "0000000") or cmd_startC = '1') then
if (NUM_DQ_PINS = 16) then
if (cmd_startC = '1') then
case addr_i(4 downto 2) is
when "000" =>
w1data <= SHIFTB_0;
when "001" =>
w1data <= SHIFTB_1;
when "010" =>
w1data <= SHIFTB_2;
when "011" =>
w1data <= SHIFTB_3;
when "100" =>
w1data <= SHIFTB_4;
when "101" =>
w1data <= SHIFTB_5;
when "110" =>
w1data <= SHIFTB_6;
when "111" =>
w1data <= SHIFTB_7;
when others =>
w1data <= SHIFTB_0;
end case;
ndata_rising <= '0'; --(NUM_DQ_PINS == 16) (cmd_startC)
--shifting
elsif (data_mode_i = "0100") then
w1data <= ("0000000000000000" & w1data(14 downto 0) & w1data(15));
else
w1data <= (w1data(29 downto 16) & w1data(31 downto 30) & w1data(13 downto 0) & w1data(15 downto 14)); --(DQ_PINS == 16
end if;
elsif (NUM_DQ_PINS = 8) then
if (cmd_startC = '1') then -- loading data pattern according the incoming address
case addr_i(2) is
when '0' =>
w1data <= SHIFTB_0;
when '1' =>
w1data <= SHIFTB_1;
when others =>
w1data <= SHIFTB_0;
end case;
else
-- (cmd_startC)
-- Shifting
-- need neigbour pattern ********************
w1data <= (w1data(27 downto 24) & w1data(31 downto 28) & w1data(19 downto 16) & w1data(23 downto 20) & w1data(11 downto 8) & w1data(15 downto 12) & w1data(3 downto 0) & w1data(7 downto 4)); --(NUM_DQ_PINS == 8)
end if;
elsif (NUM_DQ_PINS = 4) then -- NUM_DQ_PINS == 4
-- need neigbour pattern ********************
if (data_mode_i = "0100") then
w1data <= "00001000000001000000001000000001";
else
w1data <= "10000100001000011000010000100001"; -- (NUM_DQ_PINS_4
end if;
end if;
end if;
end if;
end process;
-- <outdent> -- DWIDTH == 32
end generate;
xhdl5 : if (DWIDTH = 64 and (DATA_PATTERN = "DGEN_WALKING0" or DATA_PATTERN = "DGEN_WALKING1" or DATA_PATTERN = "DGEN_ALL")) generate
process (clk_i)
begin
if (clk_i'event and clk_i = '1') then
if (rst_i = '1') then
w1data <= (others => '0');
elsif ((fifo_rdy_i = '1' and user_burst_cnt /= "0000000") or cmd_startC = '1') then
if (NUM_DQ_PINS = 16) then
if (cmd_startC = '1') then
case addr_i(4 downto 3) is
-- 7:0
when "00" =>
w1data(2 * DWIDTH / 4 - 1 downto 0 * DWIDTH / 4) <= SHIFTB_0(31 downto 0);
w1data(4 * DWIDTH / 4 - 1 downto 2 * DWIDTH / 4) <= SHIFTB_1(31 downto 0);
when "01" =>
w1data(2 * DWIDTH / 4 - 1 downto 0 * DWIDTH / 4) <= SHIFTB_2(31 downto 0);
w1data(4 * DWIDTH / 4 - 1 downto 2 * DWIDTH / 4) <= SHIFTB_3(31 downto 0);
when "10" =>
w1data(2 * DWIDTH / 4 - 1 downto 0 * DWIDTH / 4) <= SHIFTB_4(31 downto 0);
w1data(4 * DWIDTH / 4 - 1 downto 2 * DWIDTH / 4) <= SHIFTB_5(31 downto 0);
when "11" =>
w1data(2 * DWIDTH / 4 - 1 downto 0 * DWIDTH / 4) <= SHIFTB_6(31 downto 0);
w1data(4 * DWIDTH / 4 - 1 downto 2 * DWIDTH / 4) <= SHIFTB_7(31 downto 0);
--15:8
when others =>
w1data <= (ZEROS(DWIDTH-1 downto 8) & BLANK);
end case;
else
--(NUM_DQ_PINS == 16) (cmd_startC)
--shifting
if (data_mode_i = "0100") then
w1data(63 downto 48) <= "0000000000000000";
w1data(47 downto 32) <= (w1data(45 downto 32) & w1data(47 downto 46));
w1data(31 downto 16) <= "0000000000000000";
w1data(15 downto 0) <= (w1data(13 downto 0) & w1data(15 downto 14));
else
-- w1data(DWIDTH - 1 downto 0) <= (w1data(4 * DWIDTH / 4 - 5 downto 4 * DWIDTH / 4 - 16) & w1data(4 * DWIDTH / 4 - 1 downto 4 * DWIDTH / 4 - 4) & w1data(3 * DWIDTH / 4 - 5 downto 3 * DWIDTH / 4 - 16) & w1data(3 * DWIDTH / 4 - 1 downto 3 * DWIDTH / 4 - 4) & w1data(2 * DWIDTH / 4 - 5 downto 2 * DWIDTH / 4 - 16) & w1data(2 * DWIDTH / 4 - 1 downto 2 * DWIDTH / 4 - 4) & w1data(1 * DWIDTH / 4 - 5 to 1 * DWIDTH / 4 - 16) & w1data(1 * DWIDTH / 4 - 1 downto 1 * DWIDTH / 4 - 4))(31 downto 0);
w1data(DWIDTH - 1 downto 0) <= (w1data(4 * DWIDTH / 4 - 5 downto 4 * DWIDTH / 4 - 16) &
w1data(4 * DWIDTH / 4 - 1 downto 4 * DWIDTH / 4 - 4) &
w1data(3 * DWIDTH / 4 - 5 downto 3 * DWIDTH / 4 - 16) &
w1data(3 * DWIDTH / 4 - 1 downto 3 * DWIDTH / 4 - 4) &
w1data(2 * DWIDTH / 4 - 5 downto 2 * DWIDTH / 4 - 16) &
w1data(2 * DWIDTH / 4 - 1 downto 2 * DWIDTH / 4 - 4) &
w1data(1 * DWIDTH / 4 - 5 downto 1 * DWIDTH / 4 - 16) &
w1data(1 * DWIDTH / 4 - 1 downto 1 * DWIDTH / 4 - 4));
end if;
end if;
--(DQ_PINS == 16
elsif (NUM_DQ_PINS = 8) then
if (cmd_startC = '1') then -- loading data pattern according the incoming address
if (data_mode_i = "0100") then
case addr_i(3) is
when '0' =>
w1data <= (BLANK & SHIFT_3 & BLANK & SHIFT_2 & BLANK & SHIFT_1 & BLANK & SHIFT_0);
when '1' =>
w1data <= (BLANK & SHIFT_7 & BLANK & SHIFT_6 & BLANK & SHIFT_5 & BLANK & SHIFT_4);
--15:8
when others =>
w1data <= (others => '0');--"00000000000000000000000000000000";
end case;
else
w1data <= ("10000000010000000010000000010000" & "00001000000001000000001000000001"); --**** checked
w1data <= ("10000000010000000010000000010000" & "00001000000001000000001000000001"); --**** checked
w1data <= ("10000000010000000010000000010000" & "00001000000001000000001000000001"); --**** checked
end if;
-- Shifting
elsif (data_mode_i = "0100") then
w1data(63 downto 56) <= "00000000";
w1data(55 downto 48) <= (w1data(51 downto 48) & w1data(55 downto 52));
w1data(47 downto 40) <= "00000000";
w1data(39 downto 32) <= (w1data(35 downto 32) & w1data(39 downto 36));
w1data(31 downto 24) <= "00000000";
w1data(23 downto 16) <= (w1data(19 downto 16) & w1data(23 downto 20));
w1data(15 downto 8) <= "00000000";
w1data(7 downto 0) <= (w1data(3 downto 0) & w1data(7 downto 4));
else
w1data <= w1data; --(NUM_DQ_PINS == 8)
end if;
elsif (NUM_DQ_PINS = 4) then -- NUM_DQ_PINS == 4
if (data_mode_i = "0100") then
w1data <= "0000100000000100000000100000000100001000000001000000001000000001";
else
w1data <= "1000010000100001100001000010000110000100001000011000010000100001";
end if;
end if;
end if;
end if;
end process;
end generate;
xhdl6 : if (DWIDTH = 128 and (DATA_PATTERN = "DGEN_WALKING0" or DATA_PATTERN = "DGEN_WALKING1" or DATA_PATTERN = "DGEN_ALL")) generate
process (clk_i)
begin
if (clk_i'event and clk_i = '1') then
if (rst_i = '1') then
w1data <= (others => '0');
elsif ((fifo_rdy_i = '1' and user_burst_cnt /= "0000000") or cmd_startC = '1') then
if (NUM_DQ_PINS = 16) then
if (cmd_startC = '1') then
case addr_i(4) is
-- 32
when '0' =>
w1data(1 * DWIDTH / 4 - 1 downto 0 * DWIDTH / 4) <= SHIFTB_0(31 downto 0);
w1data(2 * DWIDTH / 4 - 1 downto 1 * DWIDTH / 4) <= SHIFTB_1(31 downto 0);
w1data(3 * DWIDTH / 4 - 1 downto 2 * DWIDTH / 4) <= SHIFTB_2(31 downto 0);
w1data(4 * DWIDTH / 4 - 1 downto 3 * DWIDTH / 4) <= SHIFTB_3(31 downto 0);
-- 32
when '1' =>
w1data(1 * DWIDTH / 4 - 1 downto 0 * DWIDTH / 4) <= SHIFTB_4(31 downto 0);
w1data(2 * DWIDTH / 4 - 1 downto 1 * DWIDTH / 4) <= SHIFTB_5(31 downto 0);
w1data(3 * DWIDTH / 4 - 1 downto 2 * DWIDTH / 4) <= SHIFTB_6(31 downto 0);
w1data(4 * DWIDTH / 4 - 1 downto 3 * DWIDTH / 4) <= SHIFTB_7(31 downto 0);
--15:8
when others =>
w1data <= ZEROS(DWIDTH-1 downto 8) & BLANK;
end case;
else
--(NUM_DQ_PINS == 16) (cmd_startC)
--shifting
if (data_mode_i = "0100") then
w1data(127 downto 112) <= "0000000000000000";
w1data(111 downto 96) <= (w1data(107 downto 96) & w1data(111 downto 108));
w1data(95 downto 80) <= "0000000000000000";
w1data(79 downto 64) <= (w1data(75 downto 64) & w1data(79 downto 76));
w1data(63 downto 48) <= "0000000000000000";
w1data(47 downto 32) <= (w1data(43 downto 32) & w1data(47 downto 44));
w1data(31 downto 16) <= "0000000000000000";
w1data(15 downto 0) <= (w1data(11 downto 0) & w1data(15 downto 12));
else
w1data(DWIDTH - 1 downto 0) <= (w1data(4 * DWIDTH / 4 - 9 downto 4 * DWIDTH / 4 - 16) & w1data(4 * DWIDTH / 4 - 1 downto 4 * DWIDTH / 4 - 8) & w1data(4 * DWIDTH / 4 - 25 downto 4 * DWIDTH / 4 - 32) & w1data(4 * DWIDTH / 4 - 17 downto 4 * DWIDTH / 4 - 24) & w1data(3 * DWIDTH / 4 - 9 downto 3 * DWIDTH / 4 - 16) & w1data(3 * DWIDTH / 4 - 1 downto 3 * DWIDTH / 4 - 8) & w1data(3 * DWIDTH / 4 - 25 downto 3 * DWIDTH / 4 - 32) & w1data(3 * DWIDTH / 4 - 17 downto 3 * DWIDTH / 4 - 24) & w1data(2 * DWIDTH / 4 - 9 downto 2 * DWIDTH / 4 - 16) & w1data(2 * DWIDTH / 4 - 1 downto 2 * DWIDTH / 4 - 8) & w1data(2 * DWIDTH / 4 - 25 downto 2 * DWIDTH / 4 - 32) & w1data(2 * DWIDTH / 4 - 17 downto 2 * DWIDTH / 4 - 24) & w1data(1 * DWIDTH / 4 - 9 downto 1 * DWIDTH / 4 - 16) & w1data(1 * DWIDTH / 4 - 1 downto 1 * DWIDTH / 4 - 8) & w1data(1 * DWIDTH / 4 - 25 downto 1 * DWIDTH / 4 - 32) & w1data(1 * DWIDTH / 4 - 17 downto 1 * DWIDTH / 4 - 24));
end if;
end if;
--(DQ_PINS == 16
elsif (NUM_DQ_PINS = 8) then
if (cmd_startC = '1') then -- loading data pattern according the incoming address
if (data_mode_i = "0100") then
w1data <= (BLANK & SHIFT_7 & BLANK & SHIFT_6 & BLANK & SHIFT_5 & BLANK & SHIFT_4 & BLANK & SHIFT_3 & BLANK & SHIFT_2 & BLANK & SHIFT_1 & BLANK & SHIFT_0);
else
w1data <= (SHIFT_7 & SHIFT_6 & SHIFT_5 & SHIFT_4 & SHIFT_3 & SHIFT_2 & SHIFT_1 & SHIFT_0 & SHIFT_7 & SHIFT_6 & SHIFT_5 & SHIFT_4 & SHIFT_3 & SHIFT_2 & SHIFT_1 & SHIFT_0); -- (cmd_startC)
end if;
else
-- Shifting
--{w1data[96:64], w1data[127:97],w1data[31:0], w1data[63:32]};
w1data <= w1data; -- else
end if;
--(NUM_DQ_PINS == 8)
elsif (data_mode_i = "0100") then
w1data <= "00001000000001000000001000000001000010000000010000000010000000010000100000000100000000100000000100001000000001000000001000000001";
else
w1data <= "10000100001000011000010000100001100001000010000110000100001000011000010000100001100001000010000110000100001000011000010000100001";
end if;
end if;
end if;
end process;
end generate;
-- HAMMER_PATTERN: Alternating 1s and 0s on DQ pins
-- => the rsing data pattern will be 32'b11111111_11111111_11111111_11111111
-- => the falling data pattern will be 32'b00000000_00000000_00000000_00000000
xhdl7 : if (DWIDTH = 32 and (DATA_PATTERN = "DGEN_HAMMER" or DATA_PATTERN = "DGEN_ALL")) generate
process (clk_i)
begin
if (clk_i'event and clk_i = '1') then
if (rst_i = '1') then
hdata <= (others => '0');
-- elsif ((fifo_rdy_i = '1' and user_burst_cnt(5 downto 0) /= "000000") or cmd_startC = '1') then
elsif ((fifo_rdy_i = '1' and user_burst_cnt /= 0) or cmd_startC = '1') then
if (NUM_DQ_PINS = 16) then
hdata <= "00000000000000001111111111111111";
elsif (NUM_DQ_PINS = 8) then
hdata <= "00000000111111110000000011111111"; -- NUM_DQ_PINS == 4
elsif (NUM_DQ_PINS = 4) then
hdata <= "00001111000011110000111100001111";
end if;
end if;
end if;
end process;
end generate;
xhdl8 : if (DWIDTH = 64 and (DATA_PATTERN = "DGEN_HAMMER" or DATA_PATTERN = "DGEN_ALL")) generate
process (clk_i)
begin
if (clk_i'event and clk_i = '1') then
if (rst_i = '1') then
hdata <= (others => '0');
elsif ((fifo_rdy_i = '1' and user_burst_cnt /= 0) or cmd_startC = '1') then
if (NUM_DQ_PINS = 16) then
hdata <= "0000000000000000111111111111111100000000000000001111111111111111";
elsif (NUM_DQ_PINS = 8) then
hdata <= "0000000011111111000000001111111100000000111111110000000011111111";
elsif (NUM_DQ_PINS = 4) then
hdata <= "0000111100001111000011110000111100001111000011110000111100001111";
end if;
end if;
end if;
end process;
end generate;
xhdl9 : if (DWIDTH = 128 and (DATA_PATTERN = "DGEN_HAMMER" or DATA_PATTERN = "DGEN_ALL")) generate
process (clk_i)
begin
if (clk_i'event and clk_i = '1') then
if (rst_i = '1') then
hdata <= (others => '0');
elsif ((fifo_rdy_i = '1' and user_burst_cnt /= 0) or cmd_startC = '1') then
if (NUM_DQ_PINS = 16) then
hdata <= "00000000000000001111111111111111000000000000000011111111111111110000000000000000111111111111111100000000000000001111111111111111";
elsif (NUM_DQ_PINS = 8) then
hdata <= "00000000111111110000000011111111000000001111111100000000111111110000000011111111000000001111111100000000111111110000000011111111";
elsif (NUM_DQ_PINS = 4) then
hdata <= "00001111000011110000111100001111000011110000111100001111000011110000111100001111000011110000111100001111000011110000111100001111";
end if;
end if;
end if;
end process;
end generate;
process (w1data, hdata)
begin
for i in 0 to DWIDTH - 1 loop
ndata(i) <= hdata(i) xor w1data(i);
end loop;
end process;
-- HAMMER_PATTERN_MINUS: generate walking HAMMER data pattern except 1 bit for the whole burst. The incoming addr_i[5:2] determine
-- the position of the pin driving oppsite polarity
-- addr_i[6:2] = 5'h0f ; 32 bit data port
-- => the rsing data pattern will be 32'b11111111_11111111_01111111_11111111
-- => the falling data pattern will be 32'b00000000_00000000_00000000_00000000
-- ADDRESS_PATTERN: use the address as the 1st data pattern for the whole burst. For example
-- Dataport 32 bit width with starting addr_i = 30'h12345678, user burst length 4
-- => the 1st data pattern : 32'h12345678
-- => the 2nd data pattern : 32'h12345679
-- => the 3rd data pattern : 32'h1234567a
-- => the 4th data pattern : 32'h1234567b
--data_rdy_i
xhdl10 : if (DATA_PATTERN = "DGEN_ADDR" or DATA_PATTERN = "DGEN_ALL") generate
--data_o logic
process (clk_i)
begin
if (clk_i'event and clk_i = '1') then
if (cmd_startD = '1') then
adata <= addr_i;
elsif ((fifo_rdy_i and data_rdy_i) = '1' and user_burst_cnt > "0000001") then
if (DWIDTH = 128) then
adata <= adata + "00000000000000000000000000010000";
elsif (DWIDTH = 64) then
adata <= adata + "00000000000000000000000000001000"; -- DWIDTH == 32
else
adata <= adata + "00000000000000000000000000000100";
end if;
end if;
end if;
end process;
end generate;
-- PRBS_PATTERN: use the address as the PRBS seed data pattern for the whole burst. For example
-- Dataport 32 bit width with starting addr_i = 30'h12345678, user burst length 4
--
xhdl11 : if (DATA_PATTERN = "DGEN_PRBS" or DATA_PATTERN = "DGEN_ALL") generate
-- PRBS DATA GENERATION
-- xor all the tap positions before feedback to 1st stage.
-- data_clk_en <= fifo_rdy_i and data_rdy_i and to_stdlogicvector(user_burst_cnt > "0000001", 7)(0);
data_clk_en <= (fifo_rdy_i AND data_rdy_i) when (user_burst_cnt > "0000001") ELSE '0';
data_prbs_gen_inst : data_prbs_gen
generic map (
prbs_width => 32,
seed_width => 32
)
port map (
clk_i => clk_i,
clk_en => data_clk_en,
rst_i => rst_i,
prbs_fseed_i => prbs_fseed_i,
prbs_seed_init => cmd_startE,
prbs_seed_i => addr_i(31 downto 0),
prbs_o => prbs_data
);
end generate;
end architecture trans;
View Git Blame Copy Permalink