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

   1 library ieee;
   2 use ieee.std_logic_1164.all;
   3 use ieee.std_logic_arith.all;
   4 use ieee.std_logic_unsigned.all;
   5
   6 entity dhwk is
   7 port (
   8
   9     -- General
  10     PCI_CLK     : in std_logic;
  11     PCI_nRES    : in std_logic;
  12
  13     -- PCI target 32bits
  14     PCI_AD      : inout std_logic_vector(31 downto 0);
  15     PCI_CBE     : in std_logic_vector(3 downto 0);
  16     PCI_PAR     : out std_logic;
  17     PCI_nFRAME  : in std_logic;
  18     PCI_nIRDY   : in std_logic;
  19     PCI_nTRDY   : out std_logic;
  20     PCI_nDEVSEL : out std_logic;
  21     PCI_nSTOP   : out std_logic;
  22     PCI_IDSEL   : in std_logic;
  23     PCI_nPERR   : out std_logic;
  24     PCI_nSERR   : out std_logic;
  25     PCI_nINT    : out std_logic;
  26
  27         -- debug signals
  28         LED3    : out std_logic;
  29         LED2    : out std_logic;
  30         LED4            : out std_logic;
  31         LED5            : out std_logic
  32
  33 );
  34 end dhwk;
  35
  36
  37 architecture dhwk_arch of dhwk is
  38
  39
  40 component pci32tlite
  41 port (
  42
  43     -- General
  44     clk33       : in std_logic;
  45     nrst            : in std_logic;
  46
  47     -- PCI target 32bits
  48     ad          : inout std_logic_vector(31 downto 0);
  49     cbe         : in std_logic_vector(3 downto 0);
  50     par         : out std_logic;
  51     frame       : in std_logic;
  52     irdy        : in std_logic;
  53     trdy        : out std_logic;
  54     devsel      : out std_logic;
  55     stop        : out std_logic;
  56     idsel       : in std_logic;
  57     perr        : out std_logic;
  58     serr        : out std_logic;
  59     intb        : out std_logic;
  60
  61         -- Master whisbone
  62     wb_adr_o     : out std_logic_vector(24 downto 1);
  63         wb_dat_i     : in std_logic_vector(15 downto 0);
  64     wb_dat_o     : out std_logic_vector(15 downto 0);
  65         wb_sel_o     : out std_logic_vector(1 downto 0);
  66     wb_we_o      : out std_logic;
  67         wb_stb_o     : out std_logic;
  68         wb_cyc_o     : out std_logic;
  69         wb_ack_i     : in std_logic;
  70         wb_err_i     : in std_logic;
  71         wb_int_i     : in std_logic;
  72
  73         -- debug signals
  74         debug_init       : out std_logic;
  75         debug_access : out std_logic
  76
  77         );
  78 end component;
  79
  80 component heartbeat
  81 port (
  82         clk_i : in std_logic;
  83         nrst_i : in std_logic;
  84         led2_o : out std_logic;
  85         led3_o : out std_logic;
  86         led4_o : out std_logic;
  87         led5_o : out std_logic
  88 );
  89 end component;
  90
  91 component generic_fifo_sc_a
  92 port (
  93         clk             : in std_logic;
  94         rst             : in std_logic;
  95         clr             : in std_logic;
  96         din             : in std_logic_vector(7 downto 0);
  97         we              : in std_logic;
  98         dout            : out std_logic_vector(7 downto 0);
  99         re              : in std_logic;
 100         full            : out std_logic;
 101         full_r          : out std_logic;
 102         empty           : out std_logic;
 103         empty_r         : out std_logic;
 104         full_n          : out std_logic;
 105         full_n_r        : out std_logic;
 106         empty_n         : out std_logic;
 107         empty_n_r       : out std_logic;
 108         level           : out std_logic_vector(1 downto 0)
 109 );
 110 end component;
 111
 112 signal  wb_adr :                std_logic_vector(24 downto 1);
 113 signal  wb_dat_out :    std_logic_vector(15 downto 0);
 114 signal  wb_dat_in :             std_logic_vector(15 downto 0);
 115 signal  wb_sel :                std_logic_vector(1 downto 0);
 116 signal  wb_we :                 std_logic;
 117 signal  wb_stb :                std_logic;
 118 signal  wb_cyc :                std_logic;
 119 signal  wb_ack :                std_logic;
 120 signal  wb_err :                std_logic;
 121 signal  wb_int :                std_logic;
 122
 123
 124 begin
 125
 126 u_pci: component pci32tlite
 127 port map(
 128         clk33 =>                PCI_CLK,
 129         nrst =>                 PCI_nRES,
 130         ad =>                   PCI_AD,
 131         cbe =>                  PCI_CBE,
 132         par =>                  PCI_PAR,
 133         frame =>                PCI_nFRAME,
 134         irdy =>         PCI_nIRDY,
 135         trdy =>         PCI_nTRDY,
 136         devsel =>       PCI_nDEVSEL,
 137         stop =>         PCI_nSTOP,
 138         idsel =>        PCI_IDSEL,
 139         perr =>         PCI_nPERR,
 140         serr =>         PCI_nSERR,
 141         intb =>         PCI_nINT,
 142         wb_adr_o =>             wb_adr,
 143                 wb_dat_i =>             wb_dat_out,
 144         wb_dat_o =>     wb_dat_in,
 145                 wb_sel_o =>             wb_sel,
 146         wb_we_o =>              wb_we,
 147                 wb_stb_o =>             wb_stb,
 148                 wb_cyc_o =>             wb_cyc,
 149                 wb_ack_i =>             wb_ack,
 150                 wb_err_i =>             wb_err,
 151                 wb_int_i =>             wb_int
 152 --              debug_init =>   LED3,
 153 --              debug_access => LED2
 154                 );
 155
 156 my_heartbeat: component heartbeat
 157 port map(
 158         clk_i => PCI_CLK,
 159         nrst_i => PCI_nRES,
 160         led2_o => LED2,
 161         led3_o => LED3,
 162         led4_o => LED4,
 163         led5_o => LED5
 164 );
 165
 166 end dhwk_arch;