Line 1... |
Line 1... |
//--------------------------------------------------------------------------------------------------
|
|
//
|
//////////////////////////////////////////////////////////////////////
|
// Title : No Title
|
//// ////
|
// Design : usbhostslave
|
//// hctxPortArbiter
|
// Author : Steve
|
//// ////
|
// Company : Base2Designs
|
//// This file is part of the usbhostslave opencores effort.
|
//
|
//// http://www.opencores.org/cores/usbhostslave/ ////
|
//-------------------------------------------------------------------------------------------------
|
//// ////
|
|
//// Module Description: ////
|
|
////
|
|
//// ////
|
|
//// To Do: ////
|
|
////
|
|
//// ////
|
|
//// Author(s): ////
|
|
//// - Steve Fielding, sfielding@base2designs.com ////
|
|
//// ////
|
|
//////////////////////////////////////////////////////////////////////
|
|
//// ////
|
|
//// Copyright (C) 2004 Steve Fielding and OPENCORES.ORG ////
|
|
//// ////
|
|
//// This source file may be used and distributed without ////
|
|
//// restriction provided that this copyright statement is not ////
|
|
//// removed from the file and that any derivative work contains ////
|
|
//// the original copyright notice and the associated disclaimer. ////
|
|
//// ////
|
|
//// This source file is free software; you can redistribute it ////
|
|
//// and/or modify it under the terms of the GNU Lesser General ////
|
|
//// Public License as published by the Free Software Foundation; ////
|
|
//// either version 2.1 of the License, or (at your option) any ////
|
|
//// later version. ////
|
|
//// ////
|
|
//// This source is distributed in the hope that it will be ////
|
|
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
|
|
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
|
|
//// PURPOSE. See the GNU Lesser General Public License for more ////
|
|
//// details. ////
|
|
//// ////
|
|
//// You should have received a copy of the GNU Lesser General ////
|
|
//// Public License along with this source; if not, download it ////
|
|
//// from http://www.opencores.org/lgpl.shtml ////
|
|
//// ////
|
|
//////////////////////////////////////////////////////////////////////
|
//
|
//
|
// File : c:\projects\USBHostSlave\Aldec\usbhostslave\usbhostslave\compile\hctxportarbiter.v
|
// $Id: hctxportarbiter.v,v 1.2 2004-12-18 14:36:09 sfielding Exp $
|
// Generated : 09/10/04 20:20:21
|
|
// From : c:\projects\USBHostSlave\RTL\hostController\hctxportarbiter.asf
|
|
// By : FSM2VHDL ver. 4.0.3.8
|
|
//
|
//
|
//-------------------------------------------------------------------------------------------------
|
// CVS Revision History
|
//
|
//
|
// Description :
|
// $Log: not supported by cvs2svn $
|
//
|
//
|
//-------------------------------------------------------------------------------------------------
|
|
|
|
`timescale 1ns / 1ps
|
`timescale 1ns / 1ps
|
|
|
module HCTxPortArbiter (HCTxPortCntl, HCTxPortData, HCTxPortWEnable, SOFCntlCntl, SOFCntlData, SOFCntlGnt, SOFCntlReq, SOFCntlWEn, clk, directCntlCntl, directCntlData, directCntlGnt, directCntlReq, directCntlWEn, rst, sendPacketCntl, sendPacketData, sendPacketGnt, sendPacketReq, sendPacketWEn);
|
module HCTxPortArbiter (clk, directCntlCntl, directCntlData, directCntlGnt, directCntlReq, directCntlWEn, HCTxPortCntl, HCTxPortData, HCTxPortWEnable, rst, sendPacketCntl, sendPacketData, sendPacketGnt, sendPacketReq, sendPacketWEn, SOFCntlCntl, SOFCntlData, SOFCntlGnt, SOFCntlReq, SOFCntlWEn);
|
input [7:0] SOFCntlCntl;
|
|
input [7:0] SOFCntlData;
|
|
input SOFCntlReq;
|
|
input SOFCntlWEn;
|
|
input clk;
|
input clk;
|
input [7:0] directCntlCntl;
|
input [7:0] directCntlCntl;
|
input [7:0] directCntlData;
|
input [7:0] directCntlData;
|
input directCntlReq;
|
input directCntlReq;
|
input directCntlWEn;
|
input directCntlWEn;
|
input rst;
|
input rst;
|
input [7:0] sendPacketCntl;
|
input [7:0] sendPacketCntl;
|
input [7:0] sendPacketData;
|
input [7:0] sendPacketData;
|
input sendPacketReq;
|
input sendPacketReq;
|
input sendPacketWEn;
|
input sendPacketWEn;
|
|
input [7:0]SOFCntlCntl;
|
|
input [7:0]SOFCntlData;
|
|
input SOFCntlReq;
|
|
input SOFCntlWEn;
|
|
output directCntlGnt;
|
output [7:0] HCTxPortCntl;
|
output [7:0] HCTxPortCntl;
|
output [7:0] HCTxPortData;
|
output [7:0] HCTxPortData;
|
output HCTxPortWEnable;
|
output HCTxPortWEnable;
|
output SOFCntlGnt;
|
|
output directCntlGnt;
|
|
output sendPacketGnt;
|
output sendPacketGnt;
|
|
output SOFCntlGnt;
|
|
|
reg [7:0] HCTxPortCntl, next_HCTxPortCntl;
|
|
reg [7:0] HCTxPortData, next_HCTxPortData;
|
|
reg HCTxPortWEnable, next_HCTxPortWEnable;
|
|
wire [7:0] SOFCntlCntl;
|
|
wire [7:0] SOFCntlData;
|
|
reg SOFCntlGnt, next_SOFCntlGnt;
|
|
wire SOFCntlReq;
|
|
wire SOFCntlWEn;
|
|
wire clk;
|
wire clk;
|
wire [7:0] directCntlCntl;
|
wire [7:0] directCntlCntl;
|
wire [7:0] directCntlData;
|
wire [7:0] directCntlData;
|
reg directCntlGnt, next_directCntlGnt;
|
reg directCntlGnt, next_directCntlGnt;
|
wire directCntlReq;
|
wire directCntlReq;
|
wire directCntlWEn;
|
wire directCntlWEn;
|
|
reg [7:0]HCTxPortCntl, next_HCTxPortCntl;
|
|
reg [7:0]HCTxPortData, next_HCTxPortData;
|
|
reg HCTxPortWEnable, next_HCTxPortWEnable;
|
wire rst;
|
wire rst;
|
wire [7:0] sendPacketCntl;
|
wire [7:0] sendPacketCntl;
|
wire [7:0] sendPacketData;
|
wire [7:0] sendPacketData;
|
reg sendPacketGnt, next_sendPacketGnt;
|
reg sendPacketGnt, next_sendPacketGnt;
|
wire sendPacketReq;
|
wire sendPacketReq;
|
wire sendPacketWEn;
|
wire sendPacketWEn;
|
|
wire [7:0]SOFCntlCntl;
|
|
wire [7:0]SOFCntlData;
|
|
reg SOFCntlGnt, next_SOFCntlGnt;
|
|
wire SOFCntlReq;
|
|
wire SOFCntlWEn;
|
|
|
|
|
// Constants
|
// Constants
|
`define DIRECT_CTRL_MUX 2'b10
|
`define DIRECT_CTRL_MUX 2'b10
|
`define SEND_PACKET_MUX 2'b00
|
`define SEND_PACKET_MUX 2'b00
|
Line 77... |
Line 107... |
`define WAIT_REQ 3'b001
|
`define WAIT_REQ 3'b001
|
`define SEND_SOF 3'b010
|
`define SEND_SOF 3'b010
|
`define SEND_PACKET 3'b011
|
`define SEND_PACKET 3'b011
|
`define DIRECT_CONTROL 3'b100
|
`define DIRECT_CONTROL 3'b100
|
|
|
reg [2:0] CurrState_HCTxArb;
|
reg [2:0]CurrState_HCTxArb, NextState_HCTxArb;
|
reg [2:0] NextState_HCTxArb;
|
|
|
|
// Diagram actions (continuous assignments allowed only: assign ...)
|
// Diagram actions (continuous assignments allowed only: assign ...)
|
// SOFController/directContol/sendPacket mux
|
// SOFController/directContol/sendPacket mux
|
always @(muxCntl or SOFCntlWEn or SOFCntlData or SOFCntlCntl or
|
always @(muxCntl or SOFCntlWEn or SOFCntlData or SOFCntlCntl or
|
directCntlWEn or directCntlData or directCntlCntl or
|
directCntlWEn or directCntlData or directCntlCntl or
|
Line 116... |
Line 145... |
end
|
end
|
endcase
|
endcase
|
end
|
end
|
|
|
|
|
//--------------------------------------------------------------------
|
|
// Machine: HCTxArb
|
// Machine: HCTxArb
|
//--------------------------------------------------------------------
|
|
//----------------------------------
|
|
// NextState logic (combinatorial)
|
// NextState logic (combinatorial)
|
//----------------------------------
|
always @ (SOFCntlReq or sendPacketReq or directCntlReq or SOFCntlGnt or sendPacketGnt or directCntlGnt or muxCntl or CurrState_HCTxArb)
|
always @ (SOFCntlReq or sendPacketReq or directCntlReq or SOFCntlGnt or muxCntl or sendPacketGnt or directCntlGnt or CurrState_HCTxArb)
|
begin
|
begin : HCTxArb_NextState
|
NextState_HCTxArb = CurrState_HCTxArb;
|
NextState_HCTxArb <= CurrState_HCTxArb;
|
|
// Set default values for outputs and signals
|
// Set default values for outputs and signals
|
next_SOFCntlGnt <= SOFCntlGnt;
|
next_SOFCntlGnt <= SOFCntlGnt;
|
next_muxCntl <= muxCntl;
|
|
next_sendPacketGnt <= sendPacketGnt;
|
next_sendPacketGnt <= sendPacketGnt;
|
next_directCntlGnt <= directCntlGnt;
|
next_directCntlGnt <= directCntlGnt;
|
|
next_muxCntl <= muxCntl;
|
case (CurrState_HCTxArb) // synopsys parallel_case full_case
|
case (CurrState_HCTxArb) // synopsys parallel_case full_case
|
`START_HARB:
|
`START_HARB:
|
NextState_HCTxArb <= `WAIT_REQ;
|
begin
|
|
NextState_HCTxArb = `WAIT_REQ;
|
|
end
|
`WAIT_REQ:
|
`WAIT_REQ:
|
|
begin
|
if (SOFCntlReq == 1'b1)
|
if (SOFCntlReq == 1'b1)
|
begin
|
begin
|
NextState_HCTxArb <= `SEND_SOF;
|
NextState_HCTxArb = `SEND_SOF;
|
next_SOFCntlGnt <= 1'b1;
|
next_SOFCntlGnt <= 1'b1;
|
next_muxCntl <= `SOF_CTRL_MUX;
|
next_muxCntl <= `SOF_CTRL_MUX;
|
end
|
end
|
else if (sendPacketReq == 1'b1)
|
else if (sendPacketReq == 1'b1)
|
begin
|
begin
|
NextState_HCTxArb <= `SEND_PACKET;
|
NextState_HCTxArb = `SEND_PACKET;
|
next_sendPacketGnt <= 1'b1;
|
next_sendPacketGnt <= 1'b1;
|
next_muxCntl <= `SEND_PACKET_MUX;
|
next_muxCntl <= `SEND_PACKET_MUX;
|
end
|
end
|
else if (directCntlReq == 1'b1)
|
else if (directCntlReq == 1'b1)
|
begin
|
begin
|
NextState_HCTxArb <= `DIRECT_CONTROL;
|
NextState_HCTxArb = `DIRECT_CONTROL;
|
next_directCntlGnt <= 1'b1;
|
next_directCntlGnt <= 1'b1;
|
next_muxCntl <= `DIRECT_CTRL_MUX;
|
next_muxCntl <= `DIRECT_CTRL_MUX;
|
end
|
end
|
|
end
|
`SEND_SOF:
|
`SEND_SOF:
|
|
begin
|
if (SOFCntlReq == 1'b0)
|
if (SOFCntlReq == 1'b0)
|
begin
|
begin
|
NextState_HCTxArb <= `WAIT_REQ;
|
NextState_HCTxArb = `WAIT_REQ;
|
next_SOFCntlGnt <= 1'b0;
|
next_SOFCntlGnt <= 1'b0;
|
end
|
end
|
|
end
|
`SEND_PACKET:
|
`SEND_PACKET:
|
|
begin
|
if (sendPacketReq == 1'b0)
|
if (sendPacketReq == 1'b0)
|
begin
|
begin
|
NextState_HCTxArb <= `WAIT_REQ;
|
NextState_HCTxArb = `WAIT_REQ;
|
next_sendPacketGnt <= 1'b0;
|
next_sendPacketGnt <= 1'b0;
|
end
|
end
|
|
end
|
`DIRECT_CONTROL:
|
`DIRECT_CONTROL:
|
|
begin
|
if (directCntlReq == 1'b0)
|
if (directCntlReq == 1'b0)
|
begin
|
begin
|
NextState_HCTxArb <= `WAIT_REQ;
|
NextState_HCTxArb = `WAIT_REQ;
|
next_directCntlGnt <= 1'b0;
|
next_directCntlGnt <= 1'b0;
|
end
|
end
|
|
end
|
endcase
|
endcase
|
end
|
end
|
|
|
//----------------------------------
|
|
// Current State Logic (sequential)
|
// Current State Logic (sequential)
|
//----------------------------------
|
|
always @ (posedge clk)
|
always @ (posedge clk)
|
begin : HCTxArb_CurrentState
|
begin
|
if (rst)
|
if (rst)
|
CurrState_HCTxArb <= `START_HARB;
|
CurrState_HCTxArb = `START_HARB;
|
else
|
else
|
CurrState_HCTxArb <= NextState_HCTxArb;
|
CurrState_HCTxArb = NextState_HCTxArb;
|
end
|
end
|
|
|
//----------------------------------
|
|
// Registered outputs logic
|
// Registered outputs logic
|
//----------------------------------
|
|
always @ (posedge clk)
|
always @ (posedge clk)
|
begin : HCTxArb_RegOutput
|
begin
|
if (rst)
|
if (rst)
|
begin
|
begin
|
muxCntl <= 2'b00;
|
SOFCntlGnt = 1'b0;
|
SOFCntlGnt <= 1'b0;
|
sendPacketGnt = 1'b0;
|
sendPacketGnt <= 1'b0;
|
directCntlGnt = 1'b0;
|
directCntlGnt <= 1'b0;
|
muxCntl = 2'b00;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
muxCntl <= next_muxCntl;
|
SOFCntlGnt = next_SOFCntlGnt;
|
SOFCntlGnt <= next_SOFCntlGnt;
|
sendPacketGnt = next_sendPacketGnt;
|
sendPacketGnt <= next_sendPacketGnt;
|
directCntlGnt = next_directCntlGnt;
|
directCntlGnt <= next_directCntlGnt;
|
muxCntl = next_muxCntl;
|
end
|
end
|
end
|
end
|
|
|
endmodule
|
endmodule
|
No newline at end of file
|
No newline at end of file
|