git.zerfleddert.de Git - raggedstone/blob - heartbeat/source/top_raggedstone.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 raggedstone 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         LED_INIT         : out std_logic;
  64         LED_ACCESS       : out std_logic;
  65         LED_ALIVE : out std_logic
  66
  67 );
  68 end raggedstone;
  69
  70
  71 --+-----------------------------------------------------------------------------+
  72 --|                                                                     ARCHITECTURE                                                            |
  73 --+-----------------------------------------------------------------------------+
  74
  75 architecture raggedstone_arch of raggedstone is
  76
  77
  78 --+-----------------------------------------------------------------------------+
  79 --|                                                                     COMPONENTS                                                                      |
  80 --+-----------------------------------------------------------------------------+
  81
  82 component pci32tlite
  83 port (
  84
  85     -- General
  86     clk33       : in std_logic;
  87     nrst            : in std_logic;
  88
  89     -- PCI target 32bits
  90     ad          : inout std_logic_vector(31 downto 0);
  91     cbe         : in std_logic_vector(3 downto 0);
  92     par         : out std_logic;
  93     frame       : in std_logic;
  94     irdy        : in std_logic;
  95     trdy        : out std_logic;
  96     devsel      : out std_logic;
  97     stop        : out std_logic;
  98     idsel       : in std_logic;
  99     perr        : out std_logic;
 100     serr        : out std_logic;
 101     intb        : out std_logic;
 102
 103         -- Master whisbone
 104     wb_adr_o     : out std_logic_vector(24 downto 1);
 105         wb_dat_i     : in std_logic_vector(15 downto 0);
 106     wb_dat_o     : out std_logic_vector(15 downto 0);
 107         wb_sel_o     : out std_logic_vector(1 downto 0);
 108     wb_we_o      : out std_logic;
 109         wb_stb_o     : out std_logic;
 110         wb_cyc_o     : out std_logic;
 111         wb_ack_i     : in std_logic;
 112         wb_err_i     : in std_logic;
 113         wb_int_i     : in std_logic;
 114
 115         -- debug signals
 116         debug_init       : out std_logic;
 117         debug_access : out std_logic
 118
 119         );
 120 end component;
 121
 122 component heartbeat
 123 port (
 124         clk_i : in std_logic;
 125         nrst_i : in std_logic;
 126         led_o : out std_logic
 127 );
 128 end component;
 129
 130
 131 --+-----------------------------------------------------------------------------+
 132 --|                                                                     CONSTANTS                                                                       |
 133 --+-----------------------------------------------------------------------------+
 134 --+-----------------------------------------------------------------------------+
 135 --|                                                                     SIGNALS                                                                         |
 136 --+-----------------------------------------------------------------------------+
 137
 138         signal  wb_adr :                std_logic_vector(24 downto 1);
 139         signal  wb_dat_out :    std_logic_vector(15 downto 0);
 140         signal  wb_dat_in :             std_logic_vector(15 downto 0);
 141         signal  wb_sel :                std_logic_vector(1 downto 0);
 142         signal  wb_we :                 std_logic;
 143         signal  wb_stb :                std_logic;
 144         signal  wb_cyc :                std_logic;
 145         signal  wb_ack :                std_logic;
 146         signal  wb_err :                std_logic;
 147         signal  wb_int :                std_logic;
 148
 149
 150 begin
 151
 152 --+-----------------------------------------+
 153 --|  PCI Target                                                         |
 154 --+-----------------------------------------+
 155
 156 u_pci: component pci32tlite
 157 port map(
 158         clk33 =>                PCI_CLK,
 159         nrst =>                 PCI_nRES,
 160         ad =>                   PCI_AD,
 161         cbe =>                  PCI_CBE,
 162         par =>                  PCI_PAR,
 163         frame =>                PCI_nFRAME,
 164         irdy =>         PCI_nIRDY,
 165         trdy =>         PCI_nTRDY,
 166         devsel =>       PCI_nDEVSEL,
 167         stop =>         PCI_nSTOP,
 168         idsel =>        PCI_IDSEL,
 169         perr =>         PCI_nPERR,
 170         serr =>         PCI_nSERR,
 171         intb =>         PCI_nINT,
 172         wb_adr_o =>             wb_adr,
 173                 wb_dat_i =>             wb_dat_out,
 174         wb_dat_o =>     wb_dat_in,
 175                 wb_sel_o =>             wb_sel,
 176         wb_we_o =>              wb_we,
 177                 wb_stb_o =>             wb_stb,
 178                 wb_cyc_o =>             wb_cyc,
 179                 wb_ack_i =>             wb_ack,
 180                 wb_err_i =>             wb_err,
 181                 wb_int_i =>             wb_int,
 182                 debug_init =>   LED_INIT,
 183                 debug_access => LED_ACCESS
 184                 );
 185
 186 --+-----------------------------------------+
 187 --|  WB-7seg                                                    |
 188 --+-----------------------------------------+
 189
 190 my_heartbeat: component heartbeat
 191 port map(
 192         clk_i => PCI_CLK,
 193         nrst_i => PCI_nRES,
 194         led_o => LED_ALIVE
 195 );
 196
 197 end raggedstone_arch;