git.zerfleddert.de Git - raggedstone/blob - dhwk_old/source/top_dhwk.vhd

   1 --+-------------------------------------------------------------------------------------------------+
   2 --|                                                                                                                                                                                                     |
   3 --|  File:                      top.vhd                                                                         |
   4 --|                                                                                                                                                                                                     |
   5 --|  Components:        pci32lite.vhd                                                                   |
   6 --|                         pciwbsequ.vhd                                                                                                                       |
   7 --|                         pcidmux.vhd                                                                                                                                 |
   8 --|                         pciregs.vhd                                                                                                                                 |
   9 --|                         pcipargen.vhd                                                                                                                               |
  10 --|                         -- Libs --                                                                                                                                  |
  11 --|                         ona.vhd                                                                                                                                             |
  12 --|                                                                                                                                                                                                     |
  13 --|      Description:   RS1 PCI Demo : (TOP) Main file.                                                                                 |
  14 --|                                                                                                                                                                                             |
  15 --|                                                                                                                                                                             |
  16 --|                                                                                                                                                                                                     |
  17 --+-------------------------------------------------------------------------------------------------+
  18 --|                                                                                                                                                                                                     |
  19 --|  Revision history :                                                                                                                                                         |
  20 --|  Date                 Version       Author  Description                                                                                                             |
  21 --|                                                                                                                                                                                                     |
  22 --|                                                                                                                                                                                                     |
  23 --|  To do:                                                                                                                                                                                     |
  24 --|                                                                                                                                                                                                     |
  25 --+-------------------------------------------------------------------------------------------------+
  26
  27
  28 --+-----------------------------------------------------------------------------+
  29 --|                                                                     LIBRARIES                                                                       |
  30 --+-----------------------------------------------------------------------------+
  31
  32 library ieee;
  33 use ieee.std_logic_1164.all;
  34 use ieee.std_logic_arith.all;
  35 use ieee.std_logic_unsigned.all;
  36
  37 --+-----------------------------------------------------------------------------+
  38 --|                                                                     ENTITY                                                                          |
  39 --+-----------------------------------------------------------------------------+
  40
  41 entity dhwk is
  42 port (
  43
  44     -- General
  45     PCI_CLK     : in std_logic;
  46     PCI_nRES    : in std_logic;
  47
  48     -- PCI target 32bits
  49     PCI_AD      : inout std_logic_vector(31 downto 0);
  50     PCI_CBE     : in std_logic_vector(3 downto 0);
  51     PCI_PAR     : out std_logic;
  52     PCI_nFRAME  : in std_logic;
  53     PCI_nIRDY   : in std_logic;
  54     PCI_nTRDY   : out std_logic;
  55     PCI_nDEVSEL : out std_logic;
  56     PCI_nSTOP   : out std_logic;
  57     PCI_IDSEL   : in std_logic;
  58     PCI_nPERR   : out std_logic;
  59     PCI_nSERR   : out std_logic;
  60     PCI_nINT    : out std_logic;
  61
  62         -- debug signals
  63         LED3    : out std_logic;
  64         LED2    : out std_logic;
  65         LED4            : out std_logic;
  66         LED5            : out std_logic
  67
  68 );
  69 end dhwk;
  70
  71
  72 --+-----------------------------------------------------------------------------+
  73 --|                                                                     ARCHITECTURE                                                            |
  74 --+-----------------------------------------------------------------------------+
  75
  76 architecture dhwk_arch of dhwk is
  77
  78
  79 --+-----------------------------------------------------------------------------+
  80 --|                                                                     COMPONENTS                                                                      |
  81 --+-----------------------------------------------------------------------------+
  82
  83 component pci32tlite
  84 port (
  85
  86     -- General
  87     clk33       : in std_logic;
  88     nrst            : in std_logic;
  89
  90     -- PCI target 32bits
  91     ad          : inout std_logic_vector(31 downto 0);
  92     cbe         : in std_logic_vector(3 downto 0);
  93     par         : out std_logic;
  94     frame       : in std_logic;
  95     irdy        : in std_logic;
  96     trdy        : out std_logic;
  97     devsel      : out std_logic;
  98     stop        : out std_logic;
  99     idsel       : in std_logic;
 100     perr        : out std_logic;
 101     serr        : out std_logic;
 102     intb        : out std_logic;
 103
 104         -- Master whisbone
 105     wb_adr_o     : out std_logic_vector(24 downto 1);
 106         wb_dat_i     : in std_logic_vector(15 downto 0);
 107     wb_dat_o     : out std_logic_vector(15 downto 0);
 108         wb_sel_o     : out std_logic_vector(1 downto 0);
 109     wb_we_o      : out std_logic;
 110         wb_stb_o     : out std_logic;
 111         wb_cyc_o     : out std_logic;
 112         wb_ack_i     : in std_logic;
 113         wb_err_i     : in std_logic;
 114         wb_int_i     : in std_logic;
 115
 116         -- debug signals
 117         debug_init       : out std_logic;
 118         debug_access : out std_logic
 119
 120         );
 121 end component;
 122
 123 component heartbeat
 124 port (
 125         clk_i : in std_logic;
 126         nrst_i : in std_logic;
 127         led2_o : out std_logic;
 128         led3_o : out std_logic;
 129         led4_o : out std_logic;
 130         led5_o : out std_logic
 131 );
 132 end component;
 133
 134 component generic_fifo_sc_a
 135 port (
 136         clk             : in std_logic;
 137         rst             : in std_logic;
 138         clr             : in std_logic;
 139         din             : in std_logic_vector(7 downto 0);
 140         we              : in std_logic;
 141         dout            : out std_logic_vector(7 downto 0);
 142         re              : in std_logic;
 143         full            : out std_logic;
 144         full_r          : out std_logic;
 145         empty           : out std_logic;
 146         empty_r         : out std_logic;
 147         full_n          : out std_logic;
 148         full_n_r        : out std_logic;
 149         empty_n         : out std_logic;
 150         empty_n_r       : out std_logic;
 151         level           : out std_logic_vector(1 downto 0)
 152 );
 153 end component;
 154
 155
 156 --+-----------------------------------------------------------------------------+
 157 --|                                                                     CONSTANTS                                                                       |
 158 --+-----------------------------------------------------------------------------+
 159 --+-----------------------------------------------------------------------------+
 160 --|                                                                     SIGNALS                                                                         |
 161 --+-----------------------------------------------------------------------------+
 162
 163         signal  wb_adr :                std_logic_vector(24 downto 1);
 164         signal  wb_dat_out :    std_logic_vector(15 downto 0);
 165         signal  wb_dat_in :             std_logic_vector(15 downto 0);
 166         signal  wb_sel :                std_logic_vector(1 downto 0);
 167         signal  wb_we :                 std_logic;
 168         signal  wb_stb :                std_logic;
 169         signal  wb_cyc :                std_logic;
 170         signal  wb_ack :                std_logic;
 171         signal  wb_err :                std_logic;
 172         signal  wb_int :                std_logic;
 173
 174
 175 begin
 176
 177 --+-----------------------------------------+
 178 --|  PCI Target                                                         |
 179 --+-----------------------------------------+
 180
 181 u_pci: component pci32tlite
 182 port map(
 183         clk33 =>                PCI_CLK,
 184         nrst =>                 PCI_nRES,
 185         ad =>                   PCI_AD,
 186         cbe =>                  PCI_CBE,
 187         par =>                  PCI_PAR,
 188         frame =>                PCI_nFRAME,
 189         irdy =>         PCI_nIRDY,
 190         trdy =>         PCI_nTRDY,
 191         devsel =>       PCI_nDEVSEL,
 192         stop =>         PCI_nSTOP,
 193         idsel =>        PCI_IDSEL,
 194         perr =>         PCI_nPERR,
 195         serr =>         PCI_nSERR,
 196         intb =>         PCI_nINT,
 197         wb_adr_o =>             wb_adr,
 198                 wb_dat_i =>             wb_dat_out,
 199         wb_dat_o =>     wb_dat_in,
 200                 wb_sel_o =>             wb_sel,
 201         wb_we_o =>              wb_we,
 202                 wb_stb_o =>             wb_stb,
 203                 wb_cyc_o =>             wb_cyc,
 204                 wb_ack_i =>             wb_ack,
 205                 wb_err_i =>             wb_err,
 206                 wb_int_i =>             wb_int
 207 --              debug_init =>   LED3,
 208 --              debug_access => LED2
 209                 );
 210
 211 --+-----------------------------------------+
 212 --|  WB-7seg                                                    |
 213 --+-----------------------------------------+
 214
 215 my_heartbeat: component heartbeat
 216 port map(
 217         clk_i => PCI_CLK,
 218         nrst_i => PCI_nRES,
 219         led2_o => LED2,
 220         led3_o => LED3,
 221         led4_o => LED4,
 222         led5_o => LED5
 223 );
 224
 225 end dhwk_arch;