Subversion Repositories pcie_ds_dma

----------------------------------------------------------------------------------

-- Company:         ;)

-- Engineer:        Kuzmi4

-- 

-- Create Date:     17:40:25 05/21/2010 

-- Design Name:     

-- Module Name:     block_generate_wb_config_slave - rtl 

-- Project Name:    DS_DMA

-- Target Devices:  any

-- Tool versions:   

-- Description:     

--                  

--                  For now we have such restrictions for WB component:

--                      1) no WB_RTY support

--                      2) WB_ERR arize only at event detection and fall after it goes.

--                      3) Operate with Single 64bit WB Transfers. NO WB BURSTs.

--                      4) (TBD)...

--                  

--                   WB_SLAVE MM (ONLY 256B range):

--                  1) CONSTANTs:

--                  ADDR=x00 - BLOCK_ID

--                  ADDR=x08 - BLOCK_VER

--                  ADDR=x10 - RSVD (CONSTANTs)

--                  ADDR=x18 - RSVD (CONSTANTs)

--                  ADDR=x20 - RSVD (CONSTANTs)

--                  ADDR=x28 - RSVD (CONSTANTs)

--                  ADDR=x30 - RSVD (CONSTANTs)

--                  ADDR=x38 - RSVD (CONSTANTs)

--                  2) COMMAND REGs:

--                  ADDR=x40 - TEST_GEN_CTRL

--                  ADDR=x48 - TEST_GEN_SIZE

--                  ADDR=x50 - TEST_GEN_CNT1

--                  ADDR=x58 - TEST_GEN_CNT2

--                  ADDR=x60 - RSVD (COMMAND REGs)

--                  ADDR=x68 - RSVD (COMMAND REGs)

--                  ADDR=x70 - RSVD (COMMAND REGs)

--                  ADDR=x78 - RSVD (COMMAND REGs)

--                  3) STS REGs, etc:

--                  ADDR=x80 - TEST_GEN_BL_WR

--                  ADDR=x88 - RSVD (STS REGs, etc)

--                  ....

--                  ADDR=xFF - RSVD (STS REGs, etc)

--                  

--                  

--

-- Revision: 

-- Revision 0.01 - File Created,

--                  2do: for now ADD MemoryMap looks good, but maybe its quite diff from REAL SITUATION --> CHECK/FIX MM later!!!

-- Revision 0.02 - upd WB_ERR func.

-- Revision 0.03 - fix MM (8cell allign).

--

----------------------------------------------------------------------------------

library IEEE;

use IEEE.STD_LOGIC_1164.ALL;

package block_generate_wb_config_slave_pkg is

component block_generate_wb_config_slave is

generic

(

    BLOCK_ID   : in std_logic_vector( 15 downto 0 ):=x"0000"; -- идентификатор модуля

    BLOCK_VER  : in std_logic_vector( 15 downto 0 ):=x"0000"  -- версия модуля

);

port

(

    --

    -- SYS_CON

    i_clk : in  STD_LOGIC;

    i_rst : in  STD_LOGIC;

    --

    -- WB CFG SLAVE

    iv_wbs_cfg_addr     :   in  std_logic_vector(  7 downto 0 );

    iv_wbs_cfg_data     :   in  std_logic_vector( 63 downto 0 );

    iv_wbs_cfg_sel      :   in  std_logic_vector(  7 downto 0 );    -- wor now, we NC this wires

    i_wbs_cfg_we        :   in  std_logic;

    i_wbs_cfg_cyc       :   in  std_logic;

    i_wbs_cfg_stb       :   in  std_logic;

    iv_wbs_cfg_cti      :   in  std_logic_vector(  2 downto 0 );

    iv_wbs_cfg_bte      :   in  std_logic_vector(  1 downto 0 );

    ov_wbs_cfg_data     :   out std_logic_vector( 63 downto 0 );

    o_wbs_cfg_ack       :   out std_logic;

    o_wbs_cfg_err       :   out std_logic;

    o_wbs_cfg_rty       :   out std_logic;

    --

    -- CONTROL Outputs

    ov_test_gen_ctrl    :   out std_logic_vector( 15 downto 0 );

    ov_test_gen_size    :   out std_logic_vector( 15 downto 0 );

    ov_test_gen_cnt1    :   out std_logic_vector( 15 downto 0 );

    ov_test_gen_cnt2    :   out std_logic_vector( 15 downto 0 );

    --

    -- STATUS Input

    iv_test_gen_bl_wr   :   in  std_logic_vector( 31 downto 0 )

);

end component block_generate_wb_config_slave;

end package block_generate_wb_config_slave_pkg;

----------------------------------------------------------------------------------

library IEEE;

use IEEE.STD_LOGIC_1164.ALL;

use IEEE.STD_LOGIC_ARITH.ALL;

use IEEE.STD_LOGIC_UNSIGNED.ALL;

library work;

use work.ctrl_ram16_v1_pkg.all;

use work.host_pkg.all;

entity block_generate_wb_config_slave is

generic

(

    BLOCK_ID   : in std_logic_vector( 15 downto 0 ):=x"0000"; -- идентификатор модуля

    BLOCK_VER  : in std_logic_vector( 15 downto 0 ):=x"0000"  -- версия модуля

);

port

(

    --

    -- SYS_CON

    i_clk : in  STD_LOGIC;

    i_rst : in  STD_LOGIC;

    --

    -- WB CFG SLAVE

    iv_wbs_cfg_addr     :   in  std_logic_vector(  7 downto 0 );

    iv_wbs_cfg_data     :   in  std_logic_vector( 63 downto 0 );

    iv_wbs_cfg_sel      :   in  std_logic_vector(  7 downto 0 );    -- wor now, we NC this wires

    i_wbs_cfg_we        :   in  std_logic;

    i_wbs_cfg_cyc       :   in  std_logic;

    i_wbs_cfg_stb       :   in  std_logic;

    iv_wbs_cfg_cti      :   in  std_logic_vector(  2 downto 0 );

    iv_wbs_cfg_bte      :   in  std_logic_vector(  1 downto 0 );

    ov_wbs_cfg_data     :   out std_logic_vector( 63 downto 0 );

    o_wbs_cfg_ack       :   out std_logic;

    o_wbs_cfg_err       :   out std_logic;

    o_wbs_cfg_rty       :   out std_logic;

    --

    -- CONTROL Outputs

    ov_test_gen_ctrl    :   out std_logic_vector( 15 downto 0 );

    ov_test_gen_size    :   out std_logic_vector( 15 downto 0 );

    ov_test_gen_cnt1    :   out std_logic_vector( 15 downto 0 );

    ov_test_gen_cnt2    :   out std_logic_vector( 15 downto 0 );

    --

    -- STATUS Input

    iv_test_gen_bl_wr   :   in  std_logic_vector( 31 downto 0 )

);

end block_generate_wb_config_slave;

architecture rtl of block_generate_wb_config_slave is

----------------------------------------------------------------------------------

--

-- Define CONSTANTs

constant    ct_bl_rom   :   bh_rom:=(

                                        0=> BLOCK_ID,   -- 

                                        1=> BLOCK_VER,  -- 

                                        2=> x"5504",    -- 2=> Device_ID,

                                        3=> x"0210",    -- 3=> Revision,

                                        4=> x"0104",    -- 4=> PLD_VER,  

                                        5=> x"0000",

                                        6=> x"0000",

                                        7=> x"0000"

                                    );

--

-- Define BL_RAM stuff:

signal  sv_bl_ram_adr       :   std_logic_vector( 4 downto 0):= (others => '0');

signal  sv_bl_ram_data_in   :   std_logic_vector(15 downto 0):= (others => '0');

signal  sv_bl_ram_data_out  :   std_logic_vector(15 downto 0):= (others => '0');

signal  s_bl_ram_data_we    :   std_logic:= '0';

--

-- DEFINE WB_FSM (required for build correct WB_ACK) stuff:

signal  sv_wbs_cfg_ack_counter  :   std_logic:='0';

--

-- Define additional WB signals:

signal  s_wbs_active_wr     :   std_logic;

signal  s_wbs_active_rd     :   std_logic;

signal  s_wbs_active        :   std_logic;

signal  s_wbs_wr_ena        :   std_logic;

----------------------------------------------------------------------------------

begin

----------------------------------------------------------------------------------

--

-- WB ACTIVE/ENA flag (for RD/WR and for any WB activity)

--

s_wbs_active_wr <= '1' when (

                                i_wbs_cfg_cyc='1' and i_wbs_cfg_stb='1' and i_wbs_cfg_we='1' and    -- all strobes OK

                                (iv_wbs_cfg_cti="000") and (iv_wbs_cfg_bte="00")                    -- type of transfer OK

                            ) else '0';

s_wbs_active_rd <= '1' when (

                                i_wbs_cfg_cyc='1' and i_wbs_cfg_stb='1' and i_wbs_cfg_we='0' and

                                (iv_wbs_cfg_cti="000") and (iv_wbs_cfg_bte="00")

                            ) else '0';

s_wbs_active    <= '1' when (

                                i_wbs_cfg_cyc='1' and i_wbs_cfg_stb='1'                      and

                                (iv_wbs_cfg_cti="000") and (iv_wbs_cfg_bte="00")

                            ) else '0';

s_wbs_wr_ena    <= '1' when (

                                s_wbs_active_wr='1'             and     -- have ACTIVE WR flag

                                (sv_wbs_cfg_ack_counter='1')            -- present WB_ACK source

                            ) else '0';

----------------------------------------------------------------------------------

--

-- WB Write process

--

WB_WRITE    :   process (i_clk, i_rst)

    begin

        if (i_rst='1') then             -- RST

            ov_test_gen_ctrl <= (others => '0');

            ov_test_gen_size <= (others => '0');

            ov_test_gen_cnt1 <= (others => '0');

            ov_test_gen_cnt2 <= (others => '0');

        elsif (rising_edge(i_clk)) then -- WRK

            if (s_wbs_wr_ena='1') then

                case(iv_wbs_cfg_addr(7 downto 0)) is

                    when x"40"  => ov_test_gen_ctrl <= iv_wbs_cfg_data( 15 downto 0);

                    when x"48"  => ov_test_gen_size <= iv_wbs_cfg_data( 15 downto 0);

                    when x"50"  => ov_test_gen_cnt1 <= iv_wbs_cfg_data( 15 downto 0);

                    when x"58"  => ov_test_gen_cnt2 <= iv_wbs_cfg_data( 15 downto 0);

                    when others => null;

                end case;

            end if;

        end if;

end process WB_WRITE;

----------------------------------------------------------------------------------

--

-- WB Read process

--

WB_READ     :   process (i_clk, i_rst)

    begin

        if (i_rst='1') then             -- RST

            ov_wbs_cfg_data <= (others => '0');

        elsif (rising_edge(i_clk)) then -- WRK

            if (s_wbs_active_rd='1') then

                case(iv_wbs_cfg_addr(7 downto 0)) is

                    -- STS MM region

                    when x"80"  => ov_wbs_cfg_data(31 downto 0) <= iv_test_gen_bl_wr;

                    -- BL_RAM MM region

                    when others => ov_wbs_cfg_data(15 downto 0) <= sv_bl_ram_data_out;

                end case;

            end if;

        end if;

end process WB_READ;

----------------------------------------------------------------------------------

--

-- WB ACK process

--

WB_ACK_CNT  :   process (i_clk, i_rst)

    begin

        if (i_rst='1') then             -- RST

            sv_wbs_cfg_ack_counter <= '0';

        elsif (rising_edge(i_clk)) then -- WRK:

            if (s_wbs_active='1') then  -- WB Transfer in progress

                --sv_wbs_cfg_ack_counter <= sv_wbs_cfg_ack_counter + '1';

                if (sv_wbs_cfg_ack_counter='0') then

                    sv_wbs_cfg_ack_counter <= '1';

                else

                    sv_wbs_cfg_ack_counter <= '0';

                end if;

            else                        -- no WB Transfer

                sv_wbs_cfg_ack_counter <= '0';

            end if;

        end if;

end process WB_ACK_CNT;

-- Define WB_ACK

o_wbs_cfg_ack <= '1' when   (

                                sv_wbs_cfg_ack_counter='1' and

                                i_wbs_cfg_cyc='1' and i_wbs_cfg_stb='1' -- add controls for avoid problems in anarranged transfers

                            ) else '0';

----------------------------------------------------------------------------------

--

-- Instaniate BL_RAM (contain CONSTANTs and RD values for COMMAND registers)

--

BL_RAM  :   ctrl_ram16_v1

generic map

(

    rom         => ct_bl_rom            -- значения констант

)

port map

(

    clk         => i_clk,               -- Тактовая частота

    adr         => sv_bl_ram_adr,       -- адрес 

    data_in     => sv_bl_ram_data_in,   -- вход данных

    data_out    => sv_bl_ram_data_out,  -- выход данных

    data_we     => s_bl_ram_data_we     -- 1 - запись данных

);

-- Define BL_RAM ADDR

sv_bl_ram_adr       <= iv_wbs_cfg_addr( 7 downto 3);    -- 8B granularity Transfers (cut [2:0] addr bits)

-- DEFINE BL_RAM DATA_IN

sv_bl_ram_data_in   <= iv_wbs_cfg_data(15 downto 0);    -- Cut only LS 16bit

-- DEFINE BL_RAM DATA_WRITE

s_bl_ram_data_we    <= s_wbs_wr_ena;                    -- WB_WE signal is OK

----------------------------------------------------------------------------------

--

-- MODULE OUTPUTs routing:

--

-- WB_ERR deal

o_wbs_cfg_err   <= '1' when (

                                i_wbs_cfg_cyc='1' and i_wbs_cfg_stb='1' and             -- all strobes OK

                                ( (iv_wbs_cfg_cti/="000") or (iv_wbs_cfg_bte/="00") )   -- BUT type of transfer is NOT OK

                            ) else '0';

-- WB_RTY deal

o_wbs_cfg_rty   <= '0'; -- nothing to report for now

----------------------------------------------------------------------------------

end rtl;