From 61f2f0214c5999ea42a368a4fc99f03d8eb28d1e Mon Sep 17 00:00:00 2001
From: jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5>
Date: Mon, 8 Sep 2008 01:00:12 +0000
Subject: Merged r9433:9527 from features/gr-usrp2 into trunk.  Adds usrp2 and
 gr-usrp2 top-level components.  Trunk passes distcheck with mb-gcc installed,
 but currently not without them.  The key issue is that when mb-gcc is not
 installed, the build system skips over the usrp2/firmware directory, and the
 firmware include files don't get put into the dist tarball.  But we can't do
 the usual DIST_SUBDIRS method as the firmware is a subpackage.

git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@9528 221aa14e-8319-0410-a670-987f0aec2ac5
---
 opencores/uart16550/bench/verilog/wb_mast.v | 640 ++++++++++++++++++++++++++++
 1 file changed, 640 insertions(+)
 create mode 100644 opencores/uart16550/bench/verilog/wb_mast.v

(limited to 'opencores/uart16550/bench/verilog/wb_mast.v')

diff --git a/opencores/uart16550/bench/verilog/wb_mast.v b/opencores/uart16550/bench/verilog/wb_mast.v
new file mode 100644
index 000000000..df257076f
--- /dev/null
+++ b/opencores/uart16550/bench/verilog/wb_mast.v
@@ -0,0 +1,640 @@
+/////////////////////////////////////////////////////////////////////
+////                                                             ////
+////  WISHBONE Master Model                                      ////
+////                                                             ////
+////                                                             ////
+////  Author: Rudolf Usselmann                                   ////
+////          rudi@asics.ws                                      ////
+////                                                             ////
+/////////////////////////////////////////////////////////////////////
+////                                                             ////
+//// Copyright (C) 2001 Rudolf Usselmann                         ////
+////                    rudi@asics.ws                            ////
+////                                                             ////
+//// 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 SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY     ////
+//// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED   ////
+//// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS   ////
+//// FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHOR      ////
+//// 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.                                 ////
+////                                                             ////
+/////////////////////////////////////////////////////////////////////
+
+//  CVS Log
+//
+//  $Id: wb_mast.v,v 1.1 2001/12/03 21:44:23 gorban Exp $
+//
+//  $Date: 2001/12/03 21:44:23 $
+//  $Revision: 1.1 $
+//  $Author: gorban $
+//  $Locker:  $
+//  $State: Exp $
+//
+// Change History:
+//               $Log: wb_mast.v,v $
+//               Revision 1.1  2001/12/03 21:44:23  gorban
+//               Updated specification documentation.
+//               Added full 32-bit data bus interface, now as default.
+//               Address is 5-bit wide in 32-bit data bus mode.
+//               Added wb_sel_i input to the core. It's used in the 32-bit mode.
+//               Added debug interface with two 32-bit read-only registers in 32-bit mode.
+//               Bits 5 and 6 of LSR are now only cleared on TX FIFO write.
+//               My small test bench is modified to work with 32-bit mode.
+//
+//
+//
+//
+//
+//                        
+
+/*
+
+task mem_fill;
+
+- Fills local burst read (rd_buf[]) and write(wr_buf[]) buffers with random values.
+
+
+task wb_wr1( 32 bit address, 4 bit byte select, 32 bit write data);
+
+- Performs a single WISHBONE write
+
+
+task wb_wr4( 32 bit address, 4 bit byte select, integer delay,
+	32 bit data 1, 32 bit data 2, 32 bit data 3, 32 bit data 4);
+
+- Performs 4 consecutive WISHBONE writes
+- Strobe is deasserted between writes for 'delay' number of cycles
+  (This simulates wait state insertion ...)
+
+
+task wb_wr_mult( 32 bit address, 4 bit byte select, integer delay,
+	integer count);
+
+- Simular to wb_wr4, except it pwrforms "count" number of write cycles.
+  The data is taken from the internal wr_bub[] memory.
+- Strobe is deasserted between writes for 'delay' number of cycles
+  (This simulates wait state insertion ...)
+
+
+task wb_rmw( 32 bit address, 4 bit byte select, integer delay,
+	integer rcount, integer wcount);
+
+- This task performs "rcount" read cycles, followed by wcount write cycles.
+- read data is placed in to the internal rd_buf[] memory, write data is
+  taken from the internal wr_buf[] memory.
+- Strobe is deasserted between writes for 'delay' number of cycles
+  (This simulates wait state insertion ...)
+
+
+task wb_rd1( 32 bit address, 4 bit byte select, 32 bit read data);
+
+- Performs a single WISHBONE write
+
+
+task wb_rd4( 32 bit address, 4 bit byte select, integer delay,
+	32 bit data 1, 32 bit data 2, 32 bit data 3, 32 bit data 4);
+
+- Performs 4 consecutive WISHBONE reads
+- Strobe is deasserted between reads for 'delay' number of cycles
+  (This simulates wait state insertion ...)
+
+
+task wb_rd_mult( 32 bit address, 4 bit byte select, integer delay,
+	integer count);
+
+- Simular to wb_rd4, except it pwrforms "count" number of read cycles.
+  The data is read in to the internal rd_buf[] memory.
+- Strobe is deasserted between reads for 'delay' number of cycles
+  (This simulates wait state insertion ...)
+
+
+*/
+
+
+//`include "wb_model_defines.v"
+
+module wb_mast(clk, rst, adr, din, dout, cyc, stb, sel, we, ack, err, rty);
+
+input		clk, rst;
+output	[31:0]	adr;
+input	[31:0]	din;
+output	[31:0]	dout;
+output		cyc, stb;
+output	[3:0]	sel;
+output		we;
+input		ack, err, rty;
+
+////////////////////////////////////////////////////////////////////
+//
+// Local Wires
+//
+
+parameter mem_size = 4096;
+
+reg	[31:0]	adr;
+reg	[31:0]	dout;
+reg		cyc, stb;
+reg	[3:0]	sel;
+reg		we;
+
+reg	[31:0]	rd_mem[mem_size:0];
+reg	[31:0]	wr_mem[mem_size:0];
+integer		rd_cnt;
+integer		wr_cnt;
+
+////////////////////////////////////////////////////////////////////
+//
+// Memory Logic
+//
+
+initial
+   begin
+	adr = 32'hxxxx_xxxx;
+	dout = 32'hxxxx_xxxx;
+	cyc = 0;
+	stb = 0;
+	sel = 4'hx;
+	we = 1'hx;
+	rd_cnt = 0;
+	wr_cnt = 0;
+	#1;
+	$display("\nINFO: WISHBONE MASTER MODEL INSTANTIATED (%m)\n");
+   end
+
+
+
+task mem_fill;
+
+integer n;
+begin
+rd_cnt = 0;
+wr_cnt = 0;
+for(n=0;n<mem_size;n=n+1)
+   begin
+	rd_mem[n] = $random;
+	wr_mem[n] = $random;
+   end
+end
+endtask
+
+////////////////////////////////////////////////////////////////////
+//
+// Write 1 Word Task
+//
+
+task wb_wr1;
+input	[31:0]	a;
+input	[3:0]	s;
+input	[31:0]	d;
+
+begin
+
+@(posedge clk);
+#1;
+adr = a;
+dout = d;
+cyc = 1;
+stb = 1;
+we=1;
+sel = s;
+
+@(posedge clk);
+while(~ack & ~err)	@(posedge clk);
+#1;
+cyc=0;
+stb=0;
+adr = 32'hxxxx_xxxx;
+dout = 32'hxxxx_xxxx;
+we = 1'hx;
+sel = 4'hx;
+
+end
+endtask
+
+////////////////////////////////////////////////////////////////////
+//
+// Write 4 Words Task
+//
+
+task wb_wr4;
+input	[31:0]	a;
+input	[3:0]	s;
+input		delay;
+input	[31:0]	d1;
+input	[31:0]	d2;
+input	[31:0]	d3;
+input	[31:0]	d4;
+
+integer		delay;
+
+begin
+
+@(posedge clk);
+#1;
+cyc = 1;
+sel = s;
+
+repeat(delay)
+   begin
+	@(posedge clk);
+	#1;
+   end
+adr = a;
+dout = d1;
+stb = 1;
+we=1;
+while(~ack & ~err)	@(posedge clk);
+#2;
+stb=0;
+we=1'bx;
+dout = 32'hxxxx_xxxx;
+adr = 32'hxxxx_xxxx;
+
+repeat(delay)
+   begin
+	@(posedge clk);
+	#1;
+   end
+stb=1;
+adr = a+4;
+dout = d2;
+we=1;
+@(posedge clk);
+while(~ack & ~err)	@(posedge clk);
+#2;
+stb=0;
+we=1'bx;
+dout = 32'hxxxx_xxxx;
+adr = 32'hxxxx_xxxx;
+
+repeat(delay)
+   begin
+	@(posedge clk);
+	#1;
+   end
+stb=1;
+adr = a+8;
+dout = d3;
+we=1;
+@(posedge clk);
+while(~ack & ~err)	@(posedge clk);
+#2;
+stb=0;
+we=1'bx;
+dout = 32'hxxxx_xxxx;
+adr = 32'hxxxx_xxxx;
+
+repeat(delay)
+   begin
+	@(posedge clk);
+	#1;
+   end
+stb=1;
+adr = a+12;
+dout = d4;
+we=1;
+@(posedge clk);
+while(~ack & ~err)	@(posedge clk);
+#1;
+stb=0;
+cyc=0;
+
+adr = 32'hxxxx_xxxx;
+dout = 32'hxxxx_xxxx;
+we = 1'hx;
+sel = 4'hx;
+
+end
+endtask
+
+
+task wb_wr_mult;
+input	[31:0]	a;
+input	[3:0]	s;
+input		delay;
+input		count;
+
+integer		delay;
+integer		count;
+integer		n;
+
+begin
+
+@(posedge clk);
+#1;
+cyc = 1;
+
+for(n=0;n<count;n=n+1)
+   begin
+	repeat(delay)
+	   begin
+		@(posedge clk);
+		#1;
+	   end
+	adr = a + (n*4);
+	dout = wr_mem[n + wr_cnt];
+	stb = 1;
+	we=1;
+	sel = s;
+	if(n!=0)	@(posedge clk);
+	while(~ack & ~err)	@(posedge clk);
+	#2;
+	stb=0;
+	we=1'bx;
+	sel = 4'hx;
+	dout = 32'hxxxx_xxxx;
+	adr = 32'hxxxx_xxxx;
+   end
+
+cyc=0;
+adr = 32'hxxxx_xxxx;
+
+wr_cnt = wr_cnt + count;
+end
+endtask
+
+
+task wb_rmw;
+input	[31:0]	a;
+input	[3:0]	s;
+input		delay;
+input		rcount;
+input		wcount;
+
+integer		delay;
+integer		rcount;
+integer		wcount;
+integer		n;
+
+begin
+
+@(posedge clk);
+#1;
+cyc = 1;
+we = 0;
+sel = s;
+repeat(delay)	@(posedge clk);
+
+for(n=0;n<rcount-1;n=n+1)
+   begin
+	adr = a + (n*4);
+	stb = 1;
+	while(~ack & ~err)	@(posedge clk);
+	rd_mem[n + rd_cnt] = din;
+	//$display("Rd Mem[%0d]: %h", (n + rd_cnt), rd_mem[n + rd_cnt] );
+	#2;
+	stb=0;
+	we = 1'hx;
+	sel = 4'hx;
+	adr = 32'hxxxx_xxxx;
+	repeat(delay)
+	   begin
+		@(posedge clk);
+		#1;
+	   end
+	we = 0;
+	sel = s;
+   end
+
+adr = a+(n*4);
+stb = 1;
+@(posedge clk);
+while(~ack & ~err)	@(posedge clk);
+rd_mem[n + rd_cnt] = din;
+//$display("Rd Mem[%0d]: %h", (n + rd_cnt), rd_mem[n + rd_cnt] );
+#1;
+stb=0;
+we = 1'hx;
+sel = 4'hx;
+adr = 32'hxxxx_xxxx;
+
+rd_cnt = rd_cnt + rcount;
+
+for(n=0;n<wcount;n=n+1)
+   begin
+	repeat(delay)
+	   begin
+		@(posedge clk);
+		#1;
+	   end
+	adr = a + (n*4);
+	dout = wr_mem[n + wr_cnt];
+	stb = 1;
+	we=1;
+	sel = s;
+//	if(n!=0)
+		@(posedge clk);
+	while(~ack & ~err)	@(posedge clk);
+	#2;
+	stb=0;
+	we=1'bx;
+	sel = 4'hx;
+	dout = 32'hxxxx_xxxx;
+	adr = 32'hxxxx_xxxx;
+   end
+
+cyc=0;
+adr = 32'hxxxx_xxxx;
+
+wr_cnt = wr_cnt + wcount;
+end
+endtask
+
+
+
+////////////////////////////////////////////////////////////////////
+//
+// Read 1 Word Task
+//
+
+task wb_rd1;
+input	[31:0]	a;
+input	[3:0]	s;
+output	[31:0]	d;
+
+begin
+
+@(posedge clk);
+#1;
+adr = a;
+cyc = 1;
+stb = 1;
+we  = 0;
+sel = s;
+
+while(~ack & ~err)	@(posedge clk);
+d = din;
+#1;
+cyc=0;
+stb=0;
+adr = 32'hxxxx_xxxx;
+dout = 32'hxxxx_xxxx;
+we = 1'hx;
+sel = 4'hx;
+
+end
+endtask
+
+
+////////////////////////////////////////////////////////////////////
+//
+// Read 4 Words Task
+//
+
+
+task wb_rd4;
+input	[31:0]	a;
+input	[3:0]	s;
+input		delay;
+output	[31:0]	d1;
+output	[31:0]	d2;
+output	[31:0]	d3;
+output	[31:0]	d4;
+
+integer		delay;
+begin
+
+@(posedge clk);
+#1;
+cyc = 1;
+we = 0;
+sel = s;
+repeat(delay)	@(posedge clk);
+
+adr = a;
+stb = 1;
+while(~ack & ~err)	@(posedge clk);
+d1 = din;
+#2;
+stb=0;
+we = 1'hx;
+sel = 4'hx;
+adr = 32'hxxxx_xxxx;
+repeat(delay)
+   begin
+	@(posedge clk);
+	#1;
+   end
+we = 0;
+sel = s;
+
+adr = a+4;
+stb = 1;
+@(posedge clk);
+while(~ack & ~err)	@(posedge clk);
+d2 = din;
+#2;
+stb=0;
+we = 1'hx;
+sel = 4'hx;
+adr = 32'hxxxx_xxxx;
+repeat(delay)
+   begin
+	@(posedge clk);
+	#1;
+   end
+we = 0;
+sel = s;
+
+
+adr = a+8;
+stb = 1;
+@(posedge clk);
+while(~ack & ~err)	@(posedge clk);
+d3 = din;
+#2;
+stb=0;
+we = 1'hx;
+sel = 4'hx;
+adr = 32'hxxxx_xxxx;
+repeat(delay)
+   begin
+	@(posedge clk);
+	#1;
+   end
+we = 0;
+sel = s;
+
+adr = a+12;
+stb = 1;
+@(posedge clk);
+while(~ack & ~err)	@(posedge clk);
+d4 = din;
+#1;
+stb=0;
+cyc=0;
+we = 1'hx;
+sel = 4'hx;
+adr = 32'hxxxx_xxxx;
+end
+endtask
+
+
+task wb_rd_mult;
+input	[31:0]	a;
+input	[3:0]	s;
+input		delay;
+input		count;
+
+integer		delay;
+integer		count;
+integer		n;
+
+begin
+
+@(posedge clk);
+#1;
+cyc = 1;
+we = 0;
+sel = s;
+repeat(delay)	@(posedge clk);
+
+for(n=0;n<count-1;n=n+1)
+   begin
+	adr = a + (n*4);
+	stb = 1;
+	while(~ack & ~err)	@(posedge clk);
+	rd_mem[n + rd_cnt] = din;
+	#2;
+	stb=0;
+	we = 1'hx;
+	sel = 4'hx;
+	adr = 32'hxxxx_xxxx;
+	repeat(delay)
+	   begin
+		@(posedge clk);
+		#1;
+	   end
+	we = 0;
+	sel = s;
+   end
+
+adr = a+(n*4);
+stb = 1;
+@(posedge clk);
+while(~ack & ~err)	@(posedge clk);
+rd_mem[n + rd_cnt] = din;
+#1;
+stb=0;
+cyc=0;
+we = 1'hx;
+sel = 4'hx;
+adr = 32'hxxxx_xxxx;
+
+rd_cnt = rd_cnt + count;
+end
+endtask
+
+endmodule
-- 
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