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

-- Title         : PCI interface for LEON processor

-- Project       : pci4leon

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

-- File          : pci.vhd

-- Author        : Roland Weigand  <weigand@ws.estec.esa.nl>

-- Created       : 2000/02/29

-- Last modified : 2000/02/29

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

-- Description :

-- This Unit is the top level of the PCI interface. It is connected

-- to the peripheral bus of LEON and the DMA port.

-- PCI ports must be connected to the top level pads.

-- It includes the Phoenix/In-Silicon PCI core

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

-- THIS IS JUST A DUMMY VERSION TO TEST THE LEON/AHB INTERFACE

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

library IEEE;

use IEEE.std_logic_1164.all;

use work.amba.all;

use work.leon_iface.all;

entity pci_is is

   port (

      rst_n           : in  std_logic;

      pciresetn       : in  std_logic;

      app_clk         : in  clk_type;

      pci_clk         : in  clk_type;

      -- peripheral bus

      pbi             : in  APB_Slv_In_Type;   -- peripheral bus in

      pbo             : out APB_Slv_Out_Type;  -- peripheral bus out

      irq             : out std_logic;         -- interrupt request

      -- PCI-Target DMA-Port = AHB master

      TargetMasterOut : out ahb_mst_out_type;  -- dma port out

      TargetMasterIn  : in  ahb_mst_in_type;   -- dma port in

--    TargetAsi       : out std_logic_vector(3 downto 0);  -- sparc ASI

      -- PCI PORTS for top level

      pci_in          : in  pci_in_type;       -- PCI bus inputs

      pci_out         : out pci_out_type;      -- PCI bus outputs

      -- PCI-Initiator Word-Interface = AHB slave

      InitSlaveOut  : out ahb_slv_out_type;  -- Direct initiator I/F

      InitSlaveIn   : in  ahb_slv_in_type;   -- Direct initiator I/F

      -- PCI-Intitiator DMA-Port = AHB master

      InitMasterOut : out ahb_mst_out_type;  -- dma port out

      InitMasterIn  : in  ahb_mst_in_type    -- dma port in

--    InitAsi       : out std_logic_vector(3 downto 0);  -- sparc ASI

      );

end;

architecture struct of pci_is is

begin

    InitMasterOut.haddr   <= (others => '0') ;

    InitMasterOut.htrans  <= HTRANS_IDLE;

    InitMasterOut.hbusreq <= '0';

    InitMasterOut.hwdata  <= (others => '0');

    InitMasterOut.hlock   <= '0';

    InitMasterOut.hwrite  <= '0';

    InitMasterOut.hsize   <= HSIZE_WORD;

    InitMasterOut.hburst  <= HBURST_SINGLE;

    InitMasterOut.hprot   <= (others => '0');

    TargetMasterOut.haddr   <= (others => '0') ;

    TargetMasterOut.htrans  <= HTRANS_IDLE;

    TargetMasterOut.hbusreq <= '0';

    TargetMasterOut.hwdata  <= (others => '0');

    TargetMasterOut.hlock   <= '0';

    TargetMasterOut.hwrite  <= '0';

    TargetMasterOut.hsize   <= HSIZE_WORD;

    TargetMasterOut.hburst  <= HBURST_SINGLE;

    TargetMasterOut.hprot   <= (others => '0');

    InitSlaveOut.hrdata <= (others => '0');

    InitSlaveOut.hready <= '1';

    InitSlaveOut.hresp  <= HRESP_OKAY;

    irq <= '0';

end;