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//////////////////////////////////////////////////////////////////////
////                                                              ////
////  eth_cop.v                                                   ////
////                                                              ////
////  This file is part of the Ethernet IP core project           ////
////  http://www.opencores.org/projects/ethmac/                   ////
////                                                              ////
////  Author(s):                                                  ////
////      - Igor Mohor (igorM@opencores.org)                      ////
////                                                              ////
////  All additional information is avaliable in the Readme.txt   ////
////  file.                                                       ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2001, 2002 Authors                             ////
////                                                              ////
//// 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                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
//
// CVS Revision History
//
// $Log: not supported by cvs2svn $
// Revision 1.3  2002/10/10 16:43:59  mohor
// Minor $display change.
//
// Revision 1.2  2002/09/09 12:54:13  mohor
// error acknowledge cycle termination added to display.
//
// Revision 1.1  2002/08/14 17:16:07  mohor
// Traffic cop with 2 wishbone master interfaces and 2 wishbona slave
// interfaces:
// - Host connects to the master interface
// - Ethernet master (DMA) connects to the second master interface
// - Memory interface connects to the slave interface
// - Ethernet slave interface (access to registers and BDs) connects to second
//   slave interface
//
//
//
//
//
 
`include "eth_defines.v"
`include "timescale.v"
 
module eth_cop
(
  // WISHBONE common
  wb_clk_i, wb_rst_i,
 
  // WISHBONE MASTER 1
  m1_wb_adr_i, m1_wb_sel_i, m1_wb_we_i,  m1_wb_dat_o,
  m1_wb_dat_i, m1_wb_cyc_i, m1_wb_stb_i, m1_wb_ack_o,
  m1_wb_err_o,
 
  // WISHBONE MASTER 2
  m2_wb_adr_i, m2_wb_sel_i, m2_wb_we_i,  m2_wb_dat_o,
  m2_wb_dat_i, m2_wb_cyc_i, m2_wb_stb_i, m2_wb_ack_o,
  m2_wb_err_o,
 
  // WISHBONE slave 1
        s1_wb_adr_o, s1_wb_sel_o, s1_wb_we_o,  s1_wb_cyc_o,
        s1_wb_stb_o, s1_wb_ack_i, s1_wb_err_i, s1_wb_dat_i,
        s1_wb_dat_o,
 
  // WISHBONE slave 2
        s2_wb_adr_o, s2_wb_sel_o, s2_wb_we_o,  s2_wb_cyc_o,
        s2_wb_stb_o, s2_wb_ack_i, s2_wb_err_i, s2_wb_dat_i,
        s2_wb_dat_o
);
 
parameter Tp=1;
 
// WISHBONE common
input wb_clk_i, wb_rst_i;
 
// WISHBONE MASTER 1
input  [31:0] m1_wb_adr_i, m1_wb_dat_i;
input   [3:0] m1_wb_sel_i;
input         m1_wb_cyc_i, m1_wb_stb_i, m1_wb_we_i;
output [31:0] m1_wb_dat_o;
output        m1_wb_ack_o, m1_wb_err_o;
 
// WISHBONE MASTER 2
input  [31:0] m2_wb_adr_i, m2_wb_dat_i;
input   [3:0] m2_wb_sel_i;
input         m2_wb_cyc_i, m2_wb_stb_i, m2_wb_we_i;
output [31:0] m2_wb_dat_o;
output        m2_wb_ack_o, m2_wb_err_o;
 
// WISHBONE slave 1
input  [31:0] s1_wb_dat_i;
input         s1_wb_ack_i, s1_wb_err_i;
output [31:0] s1_wb_adr_o, s1_wb_dat_o;
output  [3:0] s1_wb_sel_o;
output        s1_wb_we_o,  s1_wb_cyc_o, s1_wb_stb_o;
 
// WISHBONE slave 2
input  [31:0] s2_wb_dat_i;
input         s2_wb_ack_i, s2_wb_err_i;
output [31:0] s2_wb_adr_o, s2_wb_dat_o;
output  [3:0] s2_wb_sel_o;
output        s2_wb_we_o,  s2_wb_cyc_o, s2_wb_stb_o;
 
reg           m1_in_progress;
reg           m2_in_progress;
reg    [31:0] s1_wb_adr_o;
reg     [3:0] s1_wb_sel_o;
reg           s1_wb_we_o;
reg    [31:0] s1_wb_dat_o;
reg           s1_wb_cyc_o;
reg           s1_wb_stb_o;
reg    [31:0] s2_wb_adr_o;
reg     [3:0] s2_wb_sel_o;
reg           s2_wb_we_o;
reg    [31:0] s2_wb_dat_o;
reg           s2_wb_cyc_o;
reg           s2_wb_stb_o;
 
reg           m1_wb_ack_o;
reg    [31:0] m1_wb_dat_o;
reg           m2_wb_ack_o;
reg    [31:0] m2_wb_dat_o;
 
reg           m1_wb_err_o;
reg           m2_wb_err_o;
 
wire m_wb_access_finished;
wire m1_req = m1_wb_cyc_i & m1_wb_stb_i & (`M1_ADDRESSED_S1 | `M1_ADDRESSED_S2);
wire m2_req = m2_wb_cyc_i & m2_wb_stb_i & (`M2_ADDRESSED_S1 | `M2_ADDRESSED_S2);
 
always @ (posedge wb_clk_i or posedge wb_rst_i)
begin
  if(wb_rst_i)
    begin
      m1_in_progress <=#Tp 0;
      m2_in_progress <=#Tp 0;
      s1_wb_adr_o    <=#Tp 0;
      s1_wb_sel_o    <=#Tp 0;
      s1_wb_we_o     <=#Tp 0;
      s1_wb_dat_o    <=#Tp 0;
      s1_wb_cyc_o    <=#Tp 0;
      s1_wb_stb_o    <=#Tp 0;
      s2_wb_adr_o    <=#Tp 0;
      s2_wb_sel_o    <=#Tp 0;
      s2_wb_we_o     <=#Tp 0;
      s2_wb_dat_o    <=#Tp 0;
      s2_wb_cyc_o    <=#Tp 0;
      s2_wb_stb_o    <=#Tp 0;
    end
  else
    begin
      case({m1_in_progress, m2_in_progress, m1_req, m2_req, m_wb_access_finished})  // synopsys_full_case synopsys_paralel_case
        5'b00_10_0, 5'b00_11_0 :
          begin
            m1_in_progress <=#Tp 1'b1;  // idle: m1 or (m1 & m2) want access: m1 -> m
            if(`M1_ADDRESSED_S1)
              begin
                s1_wb_adr_o <=#Tp m1_wb_adr_i;
                s1_wb_sel_o <=#Tp m1_wb_sel_i;
                s1_wb_we_o  <=#Tp m1_wb_we_i;
                s1_wb_dat_o <=#Tp m1_wb_dat_i;
                s1_wb_cyc_o <=#Tp 1'b1;
                s1_wb_stb_o <=#Tp 1'b1;
              end
            else if(`M1_ADDRESSED_S2)
              begin
                s2_wb_adr_o <=#Tp m1_wb_adr_i;
                s2_wb_sel_o <=#Tp m1_wb_sel_i;
                s2_wb_we_o  <=#Tp m1_wb_we_i;
                s2_wb_dat_o <=#Tp m1_wb_dat_i;
                s2_wb_cyc_o <=#Tp 1'b1;
                s2_wb_stb_o <=#Tp 1'b1;
              end
            else
              $display("(%t)(%m)WISHBONE ERROR: Unspecified address space accessed", $time);
          end
        5'b00_01_0 :
          begin
            m2_in_progress <=#Tp 1'b1;  // idle: m2 wants access: m2 -> m
            if(`M2_ADDRESSED_S1)
              begin
                s1_wb_adr_o <=#Tp m2_wb_adr_i;
                s1_wb_sel_o <=#Tp m2_wb_sel_i;
                s1_wb_we_o  <=#Tp m2_wb_we_i;
                s1_wb_dat_o <=#Tp m2_wb_dat_i;
                s1_wb_cyc_o <=#Tp 1'b1;
                s1_wb_stb_o <=#Tp 1'b1;
              end
            else if(`M2_ADDRESSED_S2)
              begin
                s2_wb_adr_o <=#Tp m2_wb_adr_i;
                s2_wb_sel_o <=#Tp m2_wb_sel_i;
                s2_wb_we_o  <=#Tp m2_wb_we_i;
                s2_wb_dat_o <=#Tp m2_wb_dat_i;
                s2_wb_cyc_o <=#Tp 1'b1;
                s2_wb_stb_o <=#Tp 1'b1;
              end
            else
              $display("(%t)(%m)WISHBONE ERROR: Unspecified address space accessed", $time);
          end
        5'b10_10_1, 5'b10_11_1 :
          begin
            m1_in_progress <=#Tp 1'b0;  // m1 in progress. Cycle is finished. Send ack or err to m1.
            if(`M1_ADDRESSED_S1)
              begin
                s1_wb_cyc_o <=#Tp 1'b0;
                s1_wb_stb_o <=#Tp 1'b0;
              end
            else if(`M1_ADDRESSED_S2)
              begin
                s2_wb_cyc_o <=#Tp 1'b0;
                s2_wb_stb_o <=#Tp 1'b0;
              end
          end
        5'b01_01_1, 5'b01_11_1 :
          begin
            m2_in_progress <=#Tp 1'b0;  // m2 in progress. Cycle is finished. Send ack or err to m2.
            if(`M2_ADDRESSED_S1)
              begin
                s1_wb_cyc_o <=#Tp 1'b0;
                s1_wb_stb_o <=#Tp 1'b0;
              end
            else if(`M2_ADDRESSED_S2)
              begin
                s2_wb_cyc_o <=#Tp 1'b0;
                s2_wb_stb_o <=#Tp 1'b0;
              end
          end
      endcase
    end
end
 
// Generating Ack for master 1
always @ (m1_in_progress or m1_wb_adr_i or s1_wb_ack_i or s2_wb_ack_i or s1_wb_dat_i or s2_wb_dat_i or `M1_ADDRESSED_S1 or `M1_ADDRESSED_S2)
begin
  if(m1_in_progress)
    begin
      if(`M1_ADDRESSED_S1) begin
        m1_wb_ack_o <= s1_wb_ack_i;
        m1_wb_dat_o <= s1_wb_dat_i;
      end
      else if(`M1_ADDRESSED_S2) begin
        m1_wb_ack_o <= s2_wb_ack_i;
        m1_wb_dat_o <= s2_wb_dat_i;
      end
    end
  else
    m1_wb_ack_o <= 0;
end
 
 
// Generating Ack for master 2
always @ (m2_in_progress or m2_wb_adr_i or s1_wb_ack_i or s2_wb_ack_i or s1_wb_dat_i or s2_wb_dat_i or `M2_ADDRESSED_S1 or `M2_ADDRESSED_S2)
begin
  if(m2_in_progress)
    begin
      if(`M2_ADDRESSED_S1) begin
        m2_wb_ack_o <= s1_wb_ack_i;
        m2_wb_dat_o <= s1_wb_dat_i;
      end
      else if(`M2_ADDRESSED_S2) begin
        m2_wb_ack_o <= s2_wb_ack_i;
        m2_wb_dat_o <= s2_wb_dat_i;
      end
    end
  else
    m2_wb_ack_o <= 0;
end
 
 
// Generating Err for master 1
always @ (m1_in_progress or m1_wb_adr_i or s1_wb_err_i or s2_wb_err_i or `M2_ADDRESSED_S1 or `M2_ADDRESSED_S2 or
          m1_wb_cyc_i or m1_wb_stb_i)
begin
  if(m1_in_progress)  begin
    if(`M1_ADDRESSED_S1)
      m1_wb_err_o <= s1_wb_err_i;
    else if(`M1_ADDRESSED_S2)
      m1_wb_err_o <= s2_wb_err_i;
  end
  else if(m1_wb_cyc_i & m1_wb_stb_i & ~`M1_ADDRESSED_S1 & ~`M1_ADDRESSED_S2)
    m1_wb_err_o <= 1'b1;
  else
    m1_wb_err_o <= 1'b0;
end
 
 
// Generating Err for master 2
always @ (m2_in_progress or m2_wb_adr_i or s1_wb_err_i or s2_wb_err_i or `M2_ADDRESSED_S1 or `M2_ADDRESSED_S2 or
          m2_wb_cyc_i or m2_wb_stb_i)
begin
  if(m2_in_progress)  begin
    if(`M2_ADDRESSED_S1)
      m2_wb_err_o <= s1_wb_err_i;
    else if(`M2_ADDRESSED_S2)
      m2_wb_err_o <= s2_wb_err_i;
  end
  else if(m2_wb_cyc_i & m2_wb_stb_i & ~`M2_ADDRESSED_S1 & ~`M2_ADDRESSED_S2)
    m2_wb_err_o <= 1'b1;
  else
    m2_wb_err_o <= 1'b0;
end
 
 
assign m_wb_access_finished = m1_wb_ack_o | m1_wb_err_o | m2_wb_ack_o | m2_wb_err_o;
 
 
// Activity monitor
integer cnt;
always @ (posedge wb_clk_i or posedge wb_rst_i)
begin
  if(wb_rst_i)
    cnt <=#Tp 0;
  else
  if(s1_wb_ack_i | s1_wb_err_i | s2_wb_ack_i | s2_wb_err_i)
    cnt <=#Tp 0;
  else
  if(s1_wb_cyc_o | s2_wb_cyc_o)
    cnt <=#Tp cnt+1;
end
 
always @ (posedge wb_clk_i)
begin
  if(cnt==1000) begin
    $display("(%0t)(%m) ERROR: WB activity ??? ", $time);
    if(s1_wb_cyc_o) begin
      $display("s1_wb_dat_o = 0x%0x", s1_wb_dat_o);
      $display("s1_wb_adr_o = 0x%0x", s1_wb_adr_o);
      $display("s1_wb_sel_o = 0x%0x", s1_wb_sel_o);
      $display("s1_wb_we_o = 0x%0x", s1_wb_we_o);
    end
    else if(s2_wb_cyc_o) begin
      $display("s2_wb_dat_o = 0x%0x", s2_wb_dat_o);
      $display("s2_wb_adr_o = 0x%0x", s2_wb_adr_o);
      $display("s2_wb_sel_o = 0x%0x", s2_wb_sel_o);
      $display("s2_wb_we_o = 0x%0x", s2_wb_we_o);
    end
 
    $stop;
  end
end
 
 
always @ (posedge wb_clk_i)
begin
  if(s1_wb_err_i & s1_wb_cyc_o) begin
    $display("(%0t) ERROR: WB cycle finished with error acknowledge ", $time);
    $display("s1_wb_dat_o = 0x%0x", s1_wb_dat_o);
    $display("s1_wb_adr_o = 0x%0x", s1_wb_adr_o);
    $display("s1_wb_sel_o = 0x%0x", s1_wb_sel_o);
    $display("s1_wb_we_o = 0x%0x", s1_wb_we_o);
    $stop;
  end
  if(s2_wb_err_i & s2_wb_cyc_o) begin
    $display("(%0t) ERROR: WB cycle finished with error acknowledge ", $time);
    $display("s2_wb_dat_o = 0x%0x", s2_wb_dat_o);
    $display("s2_wb_adr_o = 0x%0x", s2_wb_adr_o);
    $display("s2_wb_sel_o = 0x%0x", s2_wb_sel_o);
    $display("s2_wb_we_o = 0x%0x", s2_wb_we_o);
    $stop;
  end
end
 
 
 
endmodule

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[/] [amber/] [trunk/] [hw/] [vlog/] [ethmac/] [eth_cop.v] - Blame information for rev 26

Line No.	Rev	Author	Line
1	2	csantifort	`//////////////////////////////////////////////////////////////////////`
2			`//// ////`
3			`//// eth_cop.v ////`
4			`//// ////`
5			`//// This file is part of the Ethernet IP core project ////`
6			`//// http://www.opencores.org/projects/ethmac/ ////`
7			`//// ////`
8			`//// Author(s): ////`
9			`//// - Igor Mohor (igorM@opencores.org) ////`
10			`//// ////`
11			`//// All additional information is avaliable in the Readme.txt ////`
12			`//// file. ////`
13			`//// ////`
14			`//////////////////////////////////////////////////////////////////////`
15			`//// ////`
16			`//// Copyright (C) 2001, 2002 Authors ////`
17			`//// ////`
18			`//// This source file may be used and distributed without ////`
19			`//// restriction provided that this copyright statement is not ////`
20			`//// removed from the file and that any derivative work contains ////`
21			`//// the original copyright notice and the associated disclaimer. ////`
22			`//// ////`
23			`//// This source file is free software; you can redistribute it ////`
24			`//// and/or modify it under the terms of the GNU Lesser General ////`
25			`//// Public License as published by the Free Software Foundation; ////`
26			`//// either version 2.1 of the License, or (at your option) any ////`
27			`//// later version. ////`
28			`//// ////`
29			`//// This source is distributed in the hope that it will be ////`
30			`//// useful, but WITHOUT ANY WARRANTY; without even the implied ////`
31			`//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////`
32			`//// PURPOSE. See the GNU Lesser General Public License for more ////`
33			`//// details. ////`
34			`//// ////`
35			`//// You should have received a copy of the GNU Lesser General ////`
36			`//// Public License along with this source; if not, download it ////`
37			`//// from http://www.opencores.org/lgpl.shtml ////`
38			`//// ////`
39			`//////////////////////////////////////////////////////////////////////`
40			`//`
41			`// CVS Revision History`
42			`//`
43			`// $Log: not supported by cvs2svn $`
44			`// Revision 1.3 2002/10/10 16:43:59 mohor`
45			`// Minor $display change.`
46			`//`
47			`// Revision 1.2 2002/09/09 12:54:13 mohor`
48			`// error acknowledge cycle termination added to display.`
49			`//`
50			`// Revision 1.1 2002/08/14 17:16:07 mohor`
51			`// Traffic cop with 2 wishbone master interfaces and 2 wishbona slave`
52			`// interfaces:`
53			`// - Host connects to the master interface`
54			`// - Ethernet master (DMA) connects to the second master interface`
55			`// - Memory interface connects to the slave interface`
56			`// - Ethernet slave interface (access to registers and BDs) connects to second`
57			`// slave interface`
58			`//`
59			`//`
60			`//`
61			`//`
62			`//`
63
64			`include "eth_defines.v"
65			`include "timescale.v"
66
67			`module eth_cop`
68			`(`
69			`// WISHBONE common`
70			`wb_clk_i, wb_rst_i,`
71
72			`// WISHBONE MASTER 1`
73			`m1_wb_adr_i, m1_wb_sel_i, m1_wb_we_i, m1_wb_dat_o,`
74			`m1_wb_dat_i, m1_wb_cyc_i, m1_wb_stb_i, m1_wb_ack_o,`
75			`m1_wb_err_o,`
76
77			`// WISHBONE MASTER 2`
78			`m2_wb_adr_i, m2_wb_sel_i, m2_wb_we_i, m2_wb_dat_o,`
79			`m2_wb_dat_i, m2_wb_cyc_i, m2_wb_stb_i, m2_wb_ack_o,`
80			`m2_wb_err_o,`
81
82			`// WISHBONE slave 1`
83			`s1_wb_adr_o, s1_wb_sel_o, s1_wb_we_o, s1_wb_cyc_o,`
84			`s1_wb_stb_o, s1_wb_ack_i, s1_wb_err_i, s1_wb_dat_i,`
85			`s1_wb_dat_o,`
86
87			`// WISHBONE slave 2`
88			`s2_wb_adr_o, s2_wb_sel_o, s2_wb_we_o, s2_wb_cyc_o,`
89			`s2_wb_stb_o, s2_wb_ack_i, s2_wb_err_i, s2_wb_dat_i,`
90			`s2_wb_dat_o`
91			`);`
92
93			`parameter Tp=1;`
94
95			`// WISHBONE common`
96			`input wb_clk_i, wb_rst_i;`
97
98			`// WISHBONE MASTER 1`
99			`input [31:0] m1_wb_adr_i, m1_wb_dat_i;`
100			`input [3:0] m1_wb_sel_i;`
101			`input m1_wb_cyc_i, m1_wb_stb_i, m1_wb_we_i;`
102			`output [31:0] m1_wb_dat_o;`
103			`output m1_wb_ack_o, m1_wb_err_o;`
104
105			`// WISHBONE MASTER 2`
106			`input [31:0] m2_wb_adr_i, m2_wb_dat_i;`
107			`input [3:0] m2_wb_sel_i;`
108			`input m2_wb_cyc_i, m2_wb_stb_i, m2_wb_we_i;`
109			`output [31:0] m2_wb_dat_o;`
110			`output m2_wb_ack_o, m2_wb_err_o;`
111
112			`// WISHBONE slave 1`
113			`input [31:0] s1_wb_dat_i;`
114			`input s1_wb_ack_i, s1_wb_err_i;`
115			`output [31:0] s1_wb_adr_o, s1_wb_dat_o;`
116			`output [3:0] s1_wb_sel_o;`
117			`output s1_wb_we_o, s1_wb_cyc_o, s1_wb_stb_o;`
118
119			`// WISHBONE slave 2`
120			`input [31:0] s2_wb_dat_i;`
121			`input s2_wb_ack_i, s2_wb_err_i;`
122			`output [31:0] s2_wb_adr_o, s2_wb_dat_o;`
123			`output [3:0] s2_wb_sel_o;`
124			`output s2_wb_we_o, s2_wb_cyc_o, s2_wb_stb_o;`
125
126			`reg m1_in_progress;`
127			`reg m2_in_progress;`
128			`reg [31:0] s1_wb_adr_o;`
129			`reg [3:0] s1_wb_sel_o;`
130			`reg s1_wb_we_o;`
131			`reg [31:0] s1_wb_dat_o;`
132			`reg s1_wb_cyc_o;`
133			`reg s1_wb_stb_o;`
134			`reg [31:0] s2_wb_adr_o;`
135			`reg [3:0] s2_wb_sel_o;`
136			`reg s2_wb_we_o;`
137			`reg [31:0] s2_wb_dat_o;`
138			`reg s2_wb_cyc_o;`
139			`reg s2_wb_stb_o;`
140
141			`reg m1_wb_ack_o;`
142			`reg [31:0] m1_wb_dat_o;`
143			`reg m2_wb_ack_o;`
144			`reg [31:0] m2_wb_dat_o;`
145
146			`reg m1_wb_err_o;`
147			`reg m2_wb_err_o;`
148
149			`wire m_wb_access_finished;`
150			wire m1_req = m1_wb_cyc_i & m1_wb_stb_i & (`M1_ADDRESSED_S1 \| `M1_ADDRESSED_S2);
151			wire m2_req = m2_wb_cyc_i & m2_wb_stb_i & (`M2_ADDRESSED_S1 \| `M2_ADDRESSED_S2);
152
153			`always @ (posedge wb_clk_i or posedge wb_rst_i)`
154			`begin`
155			`if(wb_rst_i)`
156			`begin`
157			`m1_in_progress <=#Tp 0;`
158			`m2_in_progress <=#Tp 0;`
159			`s1_wb_adr_o <=#Tp 0;`
160			`s1_wb_sel_o <=#Tp 0;`
161			`s1_wb_we_o <=#Tp 0;`
162			`s1_wb_dat_o <=#Tp 0;`
163			`s1_wb_cyc_o <=#Tp 0;`
164			`s1_wb_stb_o <=#Tp 0;`
165			`s2_wb_adr_o <=#Tp 0;`
166			`s2_wb_sel_o <=#Tp 0;`
167			`s2_wb_we_o <=#Tp 0;`
168			`s2_wb_dat_o <=#Tp 0;`
169			`s2_wb_cyc_o <=#Tp 0;`
170			`s2_wb_stb_o <=#Tp 0;`
171			`end`
172			`else`
173			`begin`
174			`case({m1_in_progress, m2_in_progress, m1_req, m2_req, m_wb_access_finished}) // synopsys_full_case synopsys_paralel_case`
175			`5'b00_10_0, 5'b00_11_0 :`
176			`begin`
177			`m1_in_progress <=#Tp 1'b1; // idle: m1 or (m1 & m2) want access: m1 -> m`
178			if(`M1_ADDRESSED_S1)
179			`begin`
180			`s1_wb_adr_o <=#Tp m1_wb_adr_i;`
181			`s1_wb_sel_o <=#Tp m1_wb_sel_i;`
182			`s1_wb_we_o <=#Tp m1_wb_we_i;`
183			`s1_wb_dat_o <=#Tp m1_wb_dat_i;`
184			`s1_wb_cyc_o <=#Tp 1'b1;`
185			`s1_wb_stb_o <=#Tp 1'b1;`
186			`end`
187			else if(`M1_ADDRESSED_S2)
188			`begin`
189			`s2_wb_adr_o <=#Tp m1_wb_adr_i;`
190			`s2_wb_sel_o <=#Tp m1_wb_sel_i;`
191			`s2_wb_we_o <=#Tp m1_wb_we_i;`
192			`s2_wb_dat_o <=#Tp m1_wb_dat_i;`
193			`s2_wb_cyc_o <=#Tp 1'b1;`
194			`s2_wb_stb_o <=#Tp 1'b1;`
195			`end`
196			`else`
197			`$display("(%t)(%m)WISHBONE ERROR: Unspecified address space accessed", $time);`
198			`end`
199			`5'b00_01_0 :`
200			`begin`
201			`m2_in_progress <=#Tp 1'b1; // idle: m2 wants access: m2 -> m`
202			if(`M2_ADDRESSED_S1)
203			`begin`
204			`s1_wb_adr_o <=#Tp m2_wb_adr_i;`
205			`s1_wb_sel_o <=#Tp m2_wb_sel_i;`
206			`s1_wb_we_o <=#Tp m2_wb_we_i;`
207			`s1_wb_dat_o <=#Tp m2_wb_dat_i;`
208			`s1_wb_cyc_o <=#Tp 1'b1;`
209			`s1_wb_stb_o <=#Tp 1'b1;`
210			`end`
211			else if(`M2_ADDRESSED_S2)
212			`begin`
213			`s2_wb_adr_o <=#Tp m2_wb_adr_i;`
214			`s2_wb_sel_o <=#Tp m2_wb_sel_i;`
215			`s2_wb_we_o <=#Tp m2_wb_we_i;`
216			`s2_wb_dat_o <=#Tp m2_wb_dat_i;`
217			`s2_wb_cyc_o <=#Tp 1'b1;`
218			`s2_wb_stb_o <=#Tp 1'b1;`
219			`end`
220			`else`
221			`$display("(%t)(%m)WISHBONE ERROR: Unspecified address space accessed", $time);`
222			`end`
223			`5'b10_10_1, 5'b10_11_1 :`
224			`begin`
225			`m1_in_progress <=#Tp 1'b0; // m1 in progress. Cycle is finished. Send ack or err to m1.`
226			if(`M1_ADDRESSED_S1)
227			`begin`
228			`s1_wb_cyc_o <=#Tp 1'b0;`
229			`s1_wb_stb_o <=#Tp 1'b0;`
230			`end`
231			else if(`M1_ADDRESSED_S2)
232			`begin`
233			`s2_wb_cyc_o <=#Tp 1'b0;`
234			`s2_wb_stb_o <=#Tp 1'b0;`
235			`end`
236			`end`
237			`5'b01_01_1, 5'b01_11_1 :`
238			`begin`
239			`m2_in_progress <=#Tp 1'b0; // m2 in progress. Cycle is finished. Send ack or err to m2.`
240			if(`M2_ADDRESSED_S1)
241			`begin`
242			`s1_wb_cyc_o <=#Tp 1'b0;`
243			`s1_wb_stb_o <=#Tp 1'b0;`
244			`end`
245			else if(`M2_ADDRESSED_S2)
246			`begin`
247			`s2_wb_cyc_o <=#Tp 1'b0;`
248			`s2_wb_stb_o <=#Tp 1'b0;`
249			`end`
250			`end`
251			`endcase`
252			`end`
253			`end`
254
255			`// Generating Ack for master 1`
256			always @ (m1_in_progress or m1_wb_adr_i or s1_wb_ack_i or s2_wb_ack_i or s1_wb_dat_i or s2_wb_dat_i or `M1_ADDRESSED_S1 or `M1_ADDRESSED_S2)
257			`begin`
258			`if(m1_in_progress)`
259			`begin`
260			if(`M1_ADDRESSED_S1) begin
261			`m1_wb_ack_o <= s1_wb_ack_i;`
262			`m1_wb_dat_o <= s1_wb_dat_i;`
263			`end`
264			else if(`M1_ADDRESSED_S2) begin
265			`m1_wb_ack_o <= s2_wb_ack_i;`
266			`m1_wb_dat_o <= s2_wb_dat_i;`
267			`end`
268			`end`
269			`else`
270			`m1_wb_ack_o <= 0;`
271			`end`
272
273
274			`// Generating Ack for master 2`
275			always @ (m2_in_progress or m2_wb_adr_i or s1_wb_ack_i or s2_wb_ack_i or s1_wb_dat_i or s2_wb_dat_i or `M2_ADDRESSED_S1 or `M2_ADDRESSED_S2)
276			`begin`
277			`if(m2_in_progress)`
278			`begin`
279			if(`M2_ADDRESSED_S1) begin
280			`m2_wb_ack_o <= s1_wb_ack_i;`
281			`m2_wb_dat_o <= s1_wb_dat_i;`
282			`end`
283			else if(`M2_ADDRESSED_S2) begin
284			`m2_wb_ack_o <= s2_wb_ack_i;`
285			`m2_wb_dat_o <= s2_wb_dat_i;`
286			`end`
287			`end`
288			`else`
289			`m2_wb_ack_o <= 0;`
290			`end`
291
292
293			`// Generating Err for master 1`
294			always @ (m1_in_progress or m1_wb_adr_i or s1_wb_err_i or s2_wb_err_i or `M2_ADDRESSED_S1 or `M2_ADDRESSED_S2 or
295			`m1_wb_cyc_i or m1_wb_stb_i)`
296			`begin`
297			`if(m1_in_progress) begin`
298			if(`M1_ADDRESSED_S1)
299			`m1_wb_err_o <= s1_wb_err_i;`
300			else if(`M1_ADDRESSED_S2)
301			`m1_wb_err_o <= s2_wb_err_i;`
302			`end`
303			else if(m1_wb_cyc_i & m1_wb_stb_i & ~`M1_ADDRESSED_S1 & ~`M1_ADDRESSED_S2)
304			`m1_wb_err_o <= 1'b1;`
305			`else`
306			`m1_wb_err_o <= 1'b0;`
307			`end`
308
309
310			`// Generating Err for master 2`
311			always @ (m2_in_progress or m2_wb_adr_i or s1_wb_err_i or s2_wb_err_i or `M2_ADDRESSED_S1 or `M2_ADDRESSED_S2 or
312			`m2_wb_cyc_i or m2_wb_stb_i)`
313			`begin`
314			`if(m2_in_progress) begin`
315			if(`M2_ADDRESSED_S1)
316			`m2_wb_err_o <= s1_wb_err_i;`
317			else if(`M2_ADDRESSED_S2)
318			`m2_wb_err_o <= s2_wb_err_i;`
319			`end`
320			else if(m2_wb_cyc_i & m2_wb_stb_i & ~`M2_ADDRESSED_S1 & ~`M2_ADDRESSED_S2)
321			`m2_wb_err_o <= 1'b1;`
322			`else`
323			`m2_wb_err_o <= 1'b0;`
324			`end`
325
326
327			`assign m_wb_access_finished = m1_wb_ack_o \| m1_wb_err_o \| m2_wb_ack_o \| m2_wb_err_o;`
328
329
330			`// Activity monitor`
331			`integer cnt;`
332			`always @ (posedge wb_clk_i or posedge wb_rst_i)`
333			`begin`
334			`if(wb_rst_i)`
335			`cnt <=#Tp 0;`
336			`else`
337			`if(s1_wb_ack_i \| s1_wb_err_i \| s2_wb_ack_i \| s2_wb_err_i)`
338			`cnt <=#Tp 0;`
339			`else`
340			`if(s1_wb_cyc_o \| s2_wb_cyc_o)`
341			`cnt <=#Tp cnt+1;`
342			`end`
343
344			`always @ (posedge wb_clk_i)`
345			`begin`
346			`if(cnt==1000) begin`
347			`$display("(%0t)(%m) ERROR: WB activity ??? ", $time);`
348			`if(s1_wb_cyc_o) begin`
349			`$display("s1_wb_dat_o = 0x%0x", s1_wb_dat_o);`
350			`$display("s1_wb_adr_o = 0x%0x", s1_wb_adr_o);`
351			`$display("s1_wb_sel_o = 0x%0x", s1_wb_sel_o);`
352			`$display("s1_wb_we_o = 0x%0x", s1_wb_we_o);`
353			`end`
354			`else if(s2_wb_cyc_o) begin`
355			`$display("s2_wb_dat_o = 0x%0x", s2_wb_dat_o);`
356			`$display("s2_wb_adr_o = 0x%0x", s2_wb_adr_o);`
357			`$display("s2_wb_sel_o = 0x%0x", s2_wb_sel_o);`
358			`$display("s2_wb_we_o = 0x%0x", s2_wb_we_o);`
359			`end`
360
361			`$stop;`
362			`end`
363			`end`
364
365
366			`always @ (posedge wb_clk_i)`
367			`begin`
368			`if(s1_wb_err_i & s1_wb_cyc_o) begin`
369			`$display("(%0t) ERROR: WB cycle finished with error acknowledge ", $time);`
370			`$display("s1_wb_dat_o = 0x%0x", s1_wb_dat_o);`
371			`$display("s1_wb_adr_o = 0x%0x", s1_wb_adr_o);`
372			`$display("s1_wb_sel_o = 0x%0x", s1_wb_sel_o);`
373			`$display("s1_wb_we_o = 0x%0x", s1_wb_we_o);`
374			`$stop;`
375			`end`
376			`if(s2_wb_err_i & s2_wb_cyc_o) begin`
377			`$display("(%0t) ERROR: WB cycle finished with error acknowledge ", $time);`
378			`$display("s2_wb_dat_o = 0x%0x", s2_wb_dat_o);`
379			`$display("s2_wb_adr_o = 0x%0x", s2_wb_adr_o);`
380			`$display("s2_wb_sel_o = 0x%0x", s2_wb_sel_o);`
381			`$display("s2_wb_we_o = 0x%0x", s2_wb_we_o);`
382			`$stop;`
383			`end`
384			`end`
385
386
387
388			`endmodule`