Subversion Repositories wf3d

//=======================================================================

// Project Monophony

//   Wire-Frame 3D Graphics Accelerator IP Core

//

// File:

//   fm_hvc.v

//

// Abstract:

//   VGA LCD Controller

//

// Author:

//   Kenji Ishimaru (info.wf3d@gmail.com)

//

//======================================================================

//

// Copyright (c) 2015, Kenji Ishimaru

// All rights reserved.

//

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are met:

//

//  -Redistributions of source code must retain the above copyright notice,

//   this list of conditions and the following disclaimer.

//  -Redistributions in binary form must reproduce the above copyright notice,

//   this list of conditions and the following disclaimer in the documentation

//   and/or other materials provided with the distribution.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR

// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;

// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR

// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,

// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

//

// Revision History

// 2016/08/14 64-bit bus support

module fm_hvc (

    clk_core,

    clk_vi,

    rst_x,

    // configuration registers

    i_video_start,

    i_fb0_offset,

    i_fb1_offset,

    i_color_mode,

    i_front_buffer,

    // status out

    o_vint_x,

    o_vint_edge,

    // dram if

    o_req,

    o_adrs,

    o_len,

    i_ack,

    i_rstr,

    i_rd,

    // video out

    clk_vo,

    o_r,

    o_g,

    o_b,

    o_vsync_x,

    o_hsync_x,

    o_blank_x,

    o_de

);

localparam P_IB_LEN_WIDTH  = 'd6;

`ifdef PP_BUSWIDTH_64

localparam P_IB_BASE_WIDTH = 'd12;

localparam P_IB_ADDR_WIDTH = 'd29;

localparam P_IB_DATA_WIDTH = 'd64;

`else

localparam P_IB_BASE_WIDTH = 'd7;

localparam P_IB_ADDR_WIDTH = 'd24;

localparam P_IB_DATA_WIDTH = 'd32;

`endif

//////////////////////////////////

// I/O port definition

//////////////////////////////////

    input          clk_core;

    input          clk_vi;     // 25MHz

    input          rst_x;

    // configuration registers

    input          i_video_start;

    input  [P_IB_BASE_WIDTH-1:0]   i_fb0_offset;

    input  [P_IB_BASE_WIDTH-1:0]   i_fb1_offset;

    input  [1:0]   i_color_mode;

    input          i_front_buffer;

    // status out

    output         o_vint_x;

    output         o_vint_edge;

    // dram if

    output        o_req;

    output [P_IB_ADDR_WIDTH-1:0]

                  o_adrs;

    output [P_IB_LEN_WIDTH-1:0]

                  o_len;

    input         i_ack;

    input         i_rstr;

    input  [P_IB_DATA_WIDTH-1:0]

                  i_rd;

    output         clk_vo;

    output [7:0]   o_r;

    output [7:0]   o_g;

    output [7:0]   o_b;

    output         o_vsync_x;

    output         o_hsync_x;

    output         o_blank_x;

    output         o_de;

//////////////////////////////////

// wire

//////////////////////////////////

    wire   [7:0]   w_test_r;

    wire   [7:0]   w_test_g;

    wire   [7:0]   w_test_b;

    wire           w_vsync_i;

    wire           w_hsync_i;

    wire           w_active;

    wire           w_first_line;

    wire           w_fifo_available;

    wire           w_fifo_available_ack;

//////////////////////////////////

// assign

//////////////////////////////////

    assign clk_vo = clk_vi;

///////////////////////////

//  module instance

//////////////////////////

fm_hvc_core fm_hvc_core (

    .clk_vi(clk_vi),

    .rst_x(rst_x),

    // configuration registers

    .i_video_start(i_video_start),

    // control out (only for internal use)

    .o_vsync_i(w_vsync_i),

    .o_hsync_i(w_hsync_i),

    // video out timing

    .o_active(w_active),

    .o_first_line(w_first_line),

    .o_r(w_test_r),

    .o_g(w_test_g),

    .o_b(w_test_b),

    .o_vsync_x(o_vsync_x),

    .o_hsync_x(o_hsync_x),

    .o_blank_x(o_blank_x),

    .o_de(o_de)

);

`ifdef PP_USE_AXI

`ifdef PP_BUSWIDTH_64

`else

   wire w_req;

   wire [P_IB_ADDR_WIDTH-1:0]

       w_adrs;

   wire [P_IB_LEN_WIDTH-1:0]

       w_len;

   wire w_ack;

fm_rd_split fm_rd_split (

    .clk_core(clk_core),

    .rst_x(rst_x),

    .i_req(w_req),

    .i_adrs(w_adrs),

    .i_len(w_len),

    .o_ack(w_ack),

    // dram if

    .o_req(o_req),

    .o_adrs(o_adrs),

    .o_len(o_len),

    .i_ack(i_ack)

);

`endif

`endif

fm_hvc_dma #(.P_IB_ADDR_WIDTH(P_IB_ADDR_WIDTH),

             .P_IB_LEN_WIDTH(P_IB_LEN_WIDTH))

  fm_hvc_dma (

    .clk_core(clk_core),

    .rst_x(rst_x),

    .i_color_mode(i_color_mode),

    .i_video_start(i_video_start),

    .i_vsync(w_vsync_i),

    .i_hsync(w_hsync_i),

    .i_fb0_offset(i_fb0_offset),

    .i_fb1_offset(i_fb1_offset),

    .i_front_buffer(i_front_buffer),

    .i_fifo_available(w_fifo_available),

    .o_fifo_available_ack(w_fifo_available_ack),

    .o_vsync(o_vint_x),

    .o_vsync_edge(o_vint_edge),

    // dram if

`ifdef PP_USE_AXI

`ifdef PP_BUSWIDTH_64

    .o_req(o_req),

    .o_adrs(o_adrs),

    .o_len(o_len),

    .i_ack(i_ack)

`else

    .o_req(w_req),

    .o_adrs(w_adrs),

    .o_len(w_len),

    .i_ack(w_ack)

`endif

`else

    .o_req(o_req),

    .o_adrs(o_adrs),

    .o_len(o_len),

    .i_ack(i_ack)

`endif

);

fm_hvc_data fm_hvc_data (

    .clk_core(clk_core),

    .clk_vi(clk_vi),

    .rst_x(rst_x),

    // sdram interface

    .i_rstr(i_rstr),

    .i_rd(i_rd),

    // timing control

    .i_h_active(w_active),

    .i_first_line(w_first_line),

    .i_hsync(w_hsync_i),

    .i_vsync(w_vsync_i),

    .o_fifo_available(w_fifo_available),

    .i_fifo_available_ack(w_fifo_available_ack),

    // configuration

    .i_video_start(i_video_start),

    .i_color_mode(i_color_mode),

    // test color input

    .i_test_r(w_test_r),

    .i_test_g(w_test_g),

    .i_test_b(w_test_b),

    // color out

    .o_r(o_r),

    .o_g(o_g),

    .o_b(o_b),

    .o_a()

);

endmodule