// SPDX-FileCopyrightText: 2020 Efabless Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// SPDX-License-Identifier: Apache-2.0

`default_nettype none
/*
 *-------------------------------------------------------------
 *
 * user_project_wrapper
 *
 * This wrapper enumerates all of the pins available to the
 * user for the user project.
 *
 * An example user project is provided in this wrapper.  The
 * example should be removed and replaced with the actual
 * user project.
 *
 *-------------------------------------------------------------
 */

module user_project_wrapper #(
    parameter BITS = 32
) (
`ifdef USE_POWER_PINS
    inout vdda1,	// User area 1 3.3V supply
    inout vdda2,	// User area 2 3.3V supply
    inout vssa1,	// User area 1 analog ground
    inout vssa2,	// User area 2 analog ground
    inout vccd1,	// User area 1 1.8V supply
    inout vccd2,	// User area 2 1.8v supply
    inout vssd1,	// User area 1 digital ground
    inout vssd2,	// User area 2 digital ground
`endif

    // Wishbone Slave ports (WB MI A)
    input wb_clk_i,
    input wb_rst_i,
    input wbs_stb_i,
    input wbs_cyc_i,
    input wbs_we_i,
    input [3:0] wbs_sel_i,
    input [31:0] wbs_dat_i,
    input [31:0] wbs_adr_i,
    output wbs_ack_o,
    output [31:0] wbs_dat_o,

    // Logic Analyzer Signals
    input  [127:0] la_data_in,
    output [127:0] la_data_out,
    input  [127:0] la_oenb,

    // IOs
    input  [`MPRJ_IO_PADS-1:0] io_in,
    output [`MPRJ_IO_PADS-1:0] io_out,
    output [`MPRJ_IO_PADS-1:0] io_oeb,

    // Analog (direct connection to GPIO pad---use with caution)
    // Note that analog I/O is not available on the 7 lowest-numbered
    // GPIO pads, and so the analog_io indexing is offset from the
    // GPIO indexing by 7 (also upper 2 GPIOs do not have analog_io).
    inout [`MPRJ_IO_PADS-10:0] analog_io,

    // Independent clock (on independent integer divider)
    input   user_clock2,

    // User maskable interrupt signals
    output [2:0] user_irq
);


  wire [ 8:0] sram_addr_a;
  wire [ 8:0] sram_addr_b;
  wire [31:0] sram_dout_a;
  wire [31:0] sram_dout_b;
  wire [31:0] sram_din_a ;
  wire [31:0] sram_din_b ;
  wire        sram_csb_b ;
  wire        sram_csb_a ;
  wire        sram_web_b ;
  wire [ 3:0] sram_mask_b;


  wire        wb_clk_i;
  wire        wb_cyc_i;
  wire        wb_stb_i;
  wire [8:0]  wb_adr_i;
  wire        wb_we_i ;
  wire [31:0] wb_dat_i;
  wire [31:0] wb_dat_o;
  wire        wb_ack_o;
  wire [31:0] trng_buffer_o;


  user_proj_example mprj (
    `ifdef USE_POWER_PINS
    .vccd1      (vccd1      ), // User area 1 1.8V power
    .vssd1      (vssd1      ), // User area 1 digital ground
    `endif
    .wb_clk_i   (wb_clk_i   ),
    .wb_rst_i   (wb_rst_i   ),
    .wbs_stb_i  (wbs_stb_i  ),
    .wbs_cyc_i  (wbs_cyc_i  ),
    .wbs_we_i   (wbs_we_i   ),
    .wbs_sel_i  (wbs_sel_i  ),
    .wbs_dat_i  (wbs_dat_i  ),
    .wbs_adr_i  (wbs_adr_i  ),
    .wbs_ack_o  (wbs_ack_o  ),
    .wbs_dat_o  (wbs_dat_o  ),
    .la_data_in (la_data_in ),
    .la_data_out(la_data_out),
    .la_oenb    (la_oenb    ),
    .io_in      (io_in      ),
    .io_out     (io_out     ),
    .io_oeb     (io_oeb     ),
    .irq        (user_irq   ),
    .sram_csb_a (sram_csb_a ),
    .sram_addr_a(sram_addr_a),
    .sram_dout_a(sram_dout_a),
    .sram_csb_b (sram_csb_b ),
    .sram_web_b (sram_web_b ),
    .sram_mask_b(sram_mask_b),
    .sram_addr_b(sram_addr_b),
    .sram_din_b (sram_din_b ),
    .trng_wb_cyc_o(wb_cyc_i),
    .trng_wb_stb_o(wb_stb_i),
    .trng_wb_adr_o(wb_adr_i),
    .trng_wb_we_o (wb_we_i ),
    .trng_wb_dat_i(wb_dat_o),
    .trng_wb_dat_o(wb_dat_i),
    .trng_wb_ack_i(wb_ack_o),    
    .trng_buffer_i (trng_buffer_o)
  );


  trng_wb_wrapper 
  #(
    .BUFFER_SIZE (BITS )
  )
  trng_wb_wrapper_dut (
    `ifdef USE_POWER_PINS
    .vccd1      (vccd1      ), // User area 1 1.8V power
    .vssd1      (vssd1      ), // User area 1 digital ground
    `endif
    .rst_i (wb_rst_i ),
    .wb_clk_i (wb_clk_i ),
    .wb_cyc_i (wb_cyc_i ),
    .wb_stb_i (wb_stb_i ),
    .wb_adr_i (wb_adr_i ),
    .wb_we_i (wb_we_i ),
    .wb_dat_i (wb_dat_i ),
    .wb_dat_o (wb_dat_o ),
    .wb_ack_o (wb_ack_o ),
    .trng_valid_o (),
    .trng_buffer_o  ( trng_buffer_o)
  );


  sky130_sram_2kbyte_1rw1r_32x512_8 u_sram1_2kb (
    `ifdef USE_POWER_PINS
    .vccd1 (vccd1      ), // User area 1 1.8V supply
    .vssd1 (vssd1      ), // User area 1 digital ground
    `endif
    // Port 0: RW
    .clk0  (wb_clk_i   ),
    .csb0  (sram_csb_b ),
    .web0  (sram_web_b ),
    .wmask0(sram_mask_b),
    .addr0 (sram_addr_b),
    .din0  (sram_din_b ),
    .dout0 (),
    // Port 1: R
    .clk1  (wb_clk_i   ),
    .csb1  (sram_csb_a ),
    .addr1 (sram_addr_a),
    .dout1 (sram_dout_a)
  );

endmodule	// user_project_wrapper

`default_nettype wire