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
 135 --+-----------------------------------------------------------------------------+
 136 --|                                                                     CONSTANTS                                                                       |
 137 --+-----------------------------------------------------------------------------+
 138 --+-----------------------------------------------------------------------------+
 139 --|                                                                     SIGNALS                                                                         |
 140 --+-----------------------------------------------------------------------------+
 141
 142         signal  wb_adr :                std_logic_vector(24 downto 1);
 143         signal  wb_dat_out :    std_logic_vector(15 downto 0);
 144         signal  wb_dat_in :             std_logic_vector(15 downto 0);
 145         signal  wb_sel :                std_logic_vector(1 downto 0);
 146         signal  wb_we :                 std_logic;
 147         signal  wb_stb :                std_logic;
 148         signal  wb_cyc :                std_logic;
 149         signal  wb_ack :                std_logic;
 150         signal  wb_err :                std_logic;
 151         signal  wb_int :                std_logic;
 152
 153
 154 begin
 155
 156 --+-----------------------------------------+
 157 --|  PCI Target                                                         |
 158 --+-----------------------------------------+
 159
 160 u_pci: component pci32tlite
 161 port map(
 162         clk33 =>                PCI_CLK,
 163         nrst =>                 PCI_nRES,
 164         ad =>                   PCI_AD,
 165         cbe =>                  PCI_CBE,
 166         par =>                  PCI_PAR,
 167         frame =>                PCI_nFRAME,
 168         irdy =>         PCI_nIRDY,
 169         trdy =>         PCI_nTRDY,
 170         devsel =>       PCI_nDEVSEL,
 171         stop =>         PCI_nSTOP,
 172         idsel =>        PCI_IDSEL,
 173         perr =>         PCI_nPERR,
 174         serr =>         PCI_nSERR,
 175         intb =>         PCI_nINT,
 176         wb_adr_o =>             wb_adr,
 177                 wb_dat_i =>             wb_dat_out,
 178         wb_dat_o =>     wb_dat_in,
 179                 wb_sel_o =>             wb_sel,
 180         wb_we_o =>              wb_we,
 181                 wb_stb_o =>             wb_stb,
 182                 wb_cyc_o =>             wb_cyc,
 183                 wb_ack_i =>             wb_ack,
 184                 wb_err_i =>             wb_err,
 185                 wb_int_i =>             wb_int
 186 --              debug_init =>   LED3,
 187 --              debug_access => LED2
 188                 );
 189
 190 --+-----------------------------------------+
 191 --|  WB-7seg                                                    |
 192 --+-----------------------------------------+
 193
 194 my_heartbeat: component heartbeat
 195 port map(
 196         clk_i => PCI_CLK,
 197         nrst_i => PCI_nRES,
 198         led2_o => LED2,
 199         led3_o => LED3,
 200         led4_o => LED4,
 201         led5_o => LED5
 202 );
 203
 204 end dhwk_arch;