Subversion Repositories fpga-cf

// Top Module
 
module top
(
   // SGMII Interface - EMAC0
   TXP_0,
   TXN_0,
   RXP_0,
   RXN_0,
 
   // SGMII MGT Clock buffer inputs 
   MGTCLK_N,
   MGTCLK_P, 
 
   // reset for ethernet phy
   PHY_RESET_0,
 
   // GTP link status
   GTP_READY,
 
   // Asynchronous Reset
   RESET,
 
	// LED Status
	LEDS,
 
	// DIP Switch
	DIP,
 
	// CPU RESET
	RESET_CPU
);
 
//-----------------------------------------------------------------------------
// Port Declarations 
//-----------------------------------------------------------------------------
 
   // SGMII Interface - EMAC0
   output          TXP_0;
   output          TXN_0;
   input           RXP_0;
   input           RXN_0;
 
   // SGMII MGT Clock buffer inputs 
   input           MGTCLK_N;
   input           MGTCLK_P;
 
   // reset for ethernet phy
   output          PHY_RESET_0; 
 
   // GTP link status
   output          GTP_READY;
 
   // Asynchronous Reset
   input           RESET;
 
	// LED Status
	output	[7:0]		LEDS;
 
	// DIP Switches
	input	[7:0]		DIP;
 
	// CPU RESET
	input 				RESET_CPU;
 
//-----------------------------------------------------------------------------
 
 
//-------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------
//                                                       User Signals
//-------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------
 
reg [7:0] DIP_r;
wire reset_cpu_p;
wire reset_cpu_i;
reg [7:0] LEDr;
 
 
//-----------------------------------------------------------------------------
// Ethernet Platform Instance
//-----------------------------------------------------------------------------
// This needs to be instantiated like this.  The first 10 signals get routed 
// through the top layer to pins.  The UCF (xupv5) has constraints for these ports.
//
// All the clock and input buffers are contained within the enetplatform module, 
// except for the RESET_CPU.  This is left to the user.  The rest of the ports 
// are routed to the channel interface.
//-----------------------------------------------------------------------------
 
wire in_src_rdy_usr;
wire out_dst_rdy_usr;
wire [7:0] in_data_usr;
wire in_sof_usr;
wire in_eof_usr;
wire in_dst_rdy_usr;
wire out_src_rdy_usr;
wire [7:0] out_data_usr;
wire out_sof_usr;
wire out_eof_usr;
wire [3:0] outport_usr;
wire [3:0] inport_usr;
wire clk_local;
 
 
enetplatform enet_inst
(
   .TXP_0(TXP_0),
   .TXN_0(TXN_0),
   .RXP_0(RXP_0),
   .RXN_0(RXN_0),
   .MGTCLK_N(MGTCLK_N),
   .MGTCLK_P(MGTCLK_P), 
   .PHY_RESET_0(PHY_RESET_0),
   .GTP_READY(GTP_READY),
   .RESET(RESET),
	.RESET_CPU(reset_cpu_p),
	.in_src_rdy_usr(in_src_rdy_usr),
	.out_dst_rdy_usr(out_dst_rdy_usr),
	.in_data_usr(in_data_usr),
	.in_sof_usr(in_sof_usr),
	.in_eof_usr(in_eof_usr),
	.in_dst_rdy_usr(in_dst_rdy_usr),
	.out_src_rdy_usr(out_src_rdy_usr),
	.out_data_usr(out_data_usr),
	.out_sof_usr(out_sof_usr),
	.out_eof_usr(out_eof_usr),
	.outport_usr(outport_usr),
	.inport_usr(inport_usr),
	.clk_local(clk_local)
);
 
//-------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------
 
 
//-------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------
//                                                       ICAP Logic
//-------------------------------------------------------------------------------------
// The ICAP modules has special considerations that can be ignored when not used.
//-------------------------------------------------------------------------------------
 
wire icap_en_wr;
wire icap_en_rd;
wire icap_out_src_rdy;
wire icap_out_dst_rdy;
wire icap_in_src_rdy;
wire icap_in_dst_rdy;
wire icap_out_sof;
wire icap_out_eof;
wire icap_in_sof;
wire icap_in_eof;
wire [7:0] icap_dataout;
wire [7:0] icap_datain;
 
port_icap_buf the_picap
(
	.clk(clk_local),
	.rst(reset_cpu_p),
	.en_wr(icap_en_wr),
	.en_rd(icap_en_rd),
	.in_data(icap_datain),
	.in_sof(icap_in_sof),
	.in_eof(icap_in_eof),
	.in_src_rdy(icap_in_src_rdy),
	.out_dst_rdy(icap_out_dst_rdy),
	.out_data(icap_dataout),
	.out_sof(icap_out_sof),
	.out_eof(icap_out_eof),
	.out_src_rdy(icap_out_src_rdy),
	.in_dst_rdy(icap_in_dst_rdy)
);
 
assign icap_en_wr = ((outport_usr == 3 && out_src_rdy_usr == 1) || (inport_usr == 3 && in_dst_rdy_usr == 1)) ? 1 : 0;
assign icap_en_rd = ((outport_usr == 4 && out_src_rdy_usr == 1) || (inport_usr == 4 && in_dst_rdy_usr == 1)) ? 1 : 0;
//assign in_src_rdy_usr =	(inport_usr == 3 || inport_usr == 4) ? icap_out_src_rdy : 1;
//assign out_dst_rdy_usr = (outport_usr == 3 || outport_usr == 4) ? icap_in_dst_rdy : 1;
//assign in_sof_usr = (inport_usr == 3 || inport_usr == 4) ? icap_sofout : 1;
//assign in_eof_usr = (inport_usr == 3 || inport_usr == 4) ? icap_eofout : 1;
//assign in_data_usr = (inport_usr == 3 || inport_usr == 4) ? icap_dataout : DIP_r;
 
 
//-------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------
//                                                       Channel Routing
//-------------------------------------------------------------------------------------
// Create the set of interface wires for each channel.
//-------------------------------------------------------------------------------------
 
wire ch1_in_sof;
wire ch1_in_eof;
wire ch1_in_src_rdy;
wire ch1_in_dst_rdy;
wire [7:0] ch1_in_data;
wire ch1_out_sof;
wire ch1_out_eof;
wire ch1_out_src_rdy;
wire ch1_out_dst_rdy;
wire [7:0] ch1_out_data;
wire ch1_wen;
wire ch1_ren;
 
wire ch2_in_sof;
wire ch2_in_eof;
wire ch2_in_src_rdy;
wire ch2_in_dst_rdy;
wire [7:0] ch2_in_data;
wire ch2_out_sof;
wire ch2_out_eof;
wire ch2_out_src_rdy;
wire ch2_out_dst_rdy;
wire [7:0] ch2_out_data;
wire ch2_wen;
wire ch2_ren;
 
wire ch3_in_sof;
wire ch3_in_eof;
wire ch3_in_src_rdy;
wire ch3_in_dst_rdy;
wire [7:0] ch3_in_data;
wire ch3_out_sof;
wire ch3_out_eof;
wire ch3_out_src_rdy;
wire ch3_out_dst_rdy;
wire [7:0] ch3_out_data;
wire ch3_wen;
wire ch3_ren;
 
wire ch4_in_sof;
wire ch4_in_eof;
wire ch4_in_src_rdy;
wire ch4_in_dst_rdy;
wire [7:0] ch4_in_data;
wire ch4_out_sof;
wire ch4_out_eof;
wire ch4_out_src_rdy;
wire ch4_out_dst_rdy;
wire [7:0] ch4_out_data;
wire ch4_wen;
wire ch4_ren;
 
channelif4 channelif_inst
(
	.in_sof(out_sof_usr),
	.in_eof(out_eof_usr),
	.in_src_rdy(out_src_rdy_usr),
	.in_dst_rdy(out_dst_rdy_usr),
	.in_data(out_data_usr),
	.inport_addr(outport_usr),
	.out_sof(in_sof_usr),
	.out_eof(in_eof_usr),
	.out_src_rdy(in_src_rdy_usr),
	.out_dst_rdy(in_dst_rdy_usr),
	.out_data(in_data_usr),
	.outport_addr(inport_usr),
	.wenables(),
	.renables(),
 
	.ch1_in_sof(ch1_in_sof),
	.ch1_in_eof(ch1_in_eof),
	.ch1_in_src_rdy(ch1_in_src_rdy),
	.ch1_in_dst_rdy(ch1_in_dst_rdy),
	.ch1_in_data(ch1_in_data),
	.ch1_out_sof(ch1_out_sof),
	.ch1_out_eof(ch1_out_eof),
	.ch1_out_src_rdy(ch1_out_src_rdy),
	.ch1_out_dst_rdy(ch1_out_dst_rdy),
	.ch1_out_data(ch1_out_data),
	.ch1_wen(ch1_wen),
	.ch1_ren(ch1_ren),
 
	.ch2_in_sof(ch2_in_sof),
	.ch2_in_eof(ch2_in_eof),
	.ch2_in_src_rdy(ch2_in_src_rdy),
	.ch2_in_dst_rdy(ch2_in_dst_rdy),
	.ch2_in_data(ch2_in_data),
	.ch2_out_sof(ch2_out_sof),
	.ch2_out_eof(ch2_out_eof),
	.ch2_out_src_rdy(ch2_out_src_rdy),
	.ch2_out_dst_rdy(ch2_out_dst_rdy),
	.ch2_out_data(ch2_out_data),
	.ch2_wen(ch2_wen),
	.ch2_ren(ch2_ren),
 
	.ch3_in_sof(ch3_in_sof),
	.ch3_in_eof(ch3_in_eof),
	.ch3_in_src_rdy(ch3_in_src_rdy),
	.ch3_in_dst_rdy(ch3_in_dst_rdy),
	.ch3_in_data(ch3_in_data),
	.ch3_out_sof(ch3_out_sof),
	.ch3_out_eof(ch3_out_eof),
	.ch3_out_src_rdy(ch3_out_src_rdy),
	.ch3_out_dst_rdy(ch3_out_dst_rdy),
	.ch3_out_data(ch3_out_data),
	.ch3_wen(ch3_wen),
	.ch3_ren(ch3_ren),
 
	.ch4_in_sof(ch4_in_sof),
	.ch4_in_eof(ch4_in_eof),
	.ch4_in_src_rdy(ch4_in_src_rdy),
	.ch4_in_dst_rdy(ch4_in_dst_rdy),
	.ch4_in_data(ch4_in_data),
	.ch4_out_sof(ch4_out_sof),
	.ch4_out_eof(ch4_out_eof),
	.ch4_out_src_rdy(ch4_out_src_rdy),
	.ch4_out_dst_rdy(ch4_out_dst_rdy),
	.ch4_out_data(ch4_out_data),
	.ch4_wen(ch4_wen),
	.ch4_ren(ch4_ren)
);
 
 
//-------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------
//                                                       User Logic
//-------------------------------------------------------------------------------------
// Place logic or port modules here.  You can see how the md5 modules is connected to 
// the channel 2 data and control lines.  
//-------------------------------------------------------------------------------------
 
wire [7:0] LEDnext;
 
IBUF cpu_reset_ibuf (.I(RESET_CPU), .O(reset_cpu_i));
 
assign reset_cpu_p = ~reset_cpu_i;
assign LEDS = LEDr;
 
always @(posedge clk_local)
begin
	DIP_r <= DIP;
end
 
always @(posedge clk_local)
begin
	if (reset_cpu_p)
		LEDr <= 0;
	else if (ch1_wen & ch1_out_src_rdy)
		LEDr <= LEDnext;
end
 
// MD5 module
port_md5 md5 (
	// Inputs:
	.clk ( clk_local ),
	.rst ( reset_cpu_p ),
	.wen ( ch2_wen ),
	.ren ( ch2_ren ),
	.in_data ( ch2_out_data ),	// Inport
	.in_sof ( ch2_out_sof ),	// Inport
	.in_eof ( ch2_out_eof ),	// Inport
	.in_src_rdy ( ch2_out_src_rdy ),	// Inport
	.out_dst_rdy ( ch2_in_dst_rdy ),	// Outport
 
	// Outputs:
	.out_data ( ch2_in_data ),	// Outport
	.out_sof ( ch2_in_sof ),	// Outport
	.out_eof ( ch2_in_eof ),	// Outport
	.out_src_rdy ( ch2_in_src_rdy ),	// Outport
	.in_dst_rdy ( ch2_out_dst_rdy )	// Inport
);
 
// LED Status
//moving_led pr_mod_inst (
//	.clk(clk_local),
//	.rst(reset_cpu_p),
//	.leds(LEDS)
//);
 
assign ch3_in_sof = icap_out_sof;
assign ch3_in_eof = icap_out_eof;
assign ch3_in_src_rdy = icap_out_src_rdy;
assign ch3_in_data = icap_dataout;
assign ch3_out_dst_rdy = icap_in_dst_rdy;
assign icap_datain = ch3_out_data | ch4_out_data;
assign icap_out_dst_rdy = ch3_in_dst_rdy | ch4_in_dst_rdy;
assign icap_in_src_rdy = ch3_out_src_rdy | ch4_out_src_rdy;
assign icap_in_sof = ch3_out_sof | ch4_out_sof;
assign icap_in_eof = ch3_out_eof | ch4_out_eof;
 
assign ch4_in_sof = icap_out_sof;
assign ch4_in_eof = icap_out_eof;
assign ch4_in_src_rdy = icap_out_src_rdy;
assign ch4_in_data = icap_dataout;
assign ch4_out_dst_rdy = icap_in_dst_rdy;
 
assign ch1_in_sof = 1;
assign ch1_in_eof = 1;
assign ch1_in_src_rdy = 1;
assign ch1_out_dst_rdy = 1;
assign ch1_in_data = DIP_r;
assign LEDnext = ch1_out_data;
 
 
 
endmodule