src/edu/berkeley/fleet/fpga/Fpga.java

   1 package edu.berkeley.fleet.fpga;
   2 import edu.berkeley.fleet.fpga.*;
   3 import edu.berkeley.fleet.api.*;
   4 import edu.berkeley.fleet.two.*;
   5 import edu.berkeley.fleet.*;
   6 import java.lang.reflect.*;
   7 import edu.berkeley.sbp.chr.*;
   8 import edu.berkeley.sbp.misc.*;
   9 import edu.berkeley.sbp.meta.*;
  10 import edu.berkeley.sbp.util.*;
  11 import java.util.*;
  12 import java.io.*;
  13 import edu.berkeley.fleet.two.*;
  14 import static edu.berkeley.fleet.two.FleetTwoFleet.*;
  15 import static edu.berkeley.fleet.fpga.verilog.Verilog.*;
  16 import edu.berkeley.fleet.two.PercolatedPort;
  17
  18
  19 public class Fpga extends FleetTwoFleet {
  20
  21     public  Module top;
  22     Ship debugShip;
  23
  24     public LinkedHashMap<String,FpgaShip> ships = new LinkedHashMap<String,FpgaShip>();
  25     public Iterator<Ship> iterator() { return (Iterator<Ship>)(Object)ships.values().iterator(); }
  26
  27     public Ship getShip(String type, int ordinal) {
  28         for(Ship s : this)
  29             if (s.getType().equals(type))
  30                 if (--ordinal < 0)
  31                     return s;
  32         return null;
  33     }
  34
  35     public static void main(String[] s) throws Exception {
  36         new Fpga(new Module("main")).top.dump(s[0]);
  37         PrintWriter pw;
  38
  39         pw = new PrintWriter(new OutputStreamWriter(new FileOutputStream(s[0]+"/timescale.v")));
  40         pw.println("`timescale 1ns / 10ps");
  41         pw.close();
  42
  43         pw = new PrintWriter(new OutputStreamWriter(new FileOutputStream(s[0]+"/vram.v")));
  44         pw.println("`define BRAM_ADDR_WIDTH 19");
  45         pw.println("`define BRAM_DATA_WIDTH 3");
  46         pw.println("`define BRAM_SIZE (640*480)");
  47         pw.println("`define BRAM_NAME vram");
  48         pw.println("`include \"bram.inc\"");
  49         pw.close();
  50     }
  51
  52     public Module getVerilogModule() { return top; }
  53
  54     public FleetProcess run(Instruction[] instructions) {
  55         try {
  56             return new Client(this, "none", instructions);
  57         } catch (Exception e) { throw new RuntimeException(e); }
  58     }
  59
  60     protected BitVector getDestAddr(Path path) {
  61         return ((FpgaPath)path).toBitVector();
  62     }
  63
  64     // Setup //////////////////////////////////////////////////////////////////////////////
  65
  66     Ship createShip(String type) throws IOException {
  67         ShipDescription sd = new ShipDescription(this, type, new BufferedReader(new InputStreamReader(new FileInputStream("ships/"+type+".ship"))));
  68         int count = 0;
  69         for(Ship ship : ships.values()) if (ship.getType().equals(type)) count++;
  70         String name = type+count;
  71         FpgaShip ship = new FpgaShip(this, sd);
  72         ships.put(name, ship);
  73         return ship;
  74     }
  75
  76     public Fpga() throws Exception { this(new Module("main")); }
  77     public Fpga(Module top) throws Exception {
  78         this.top = top;
  79         debugShip = createShip("Debug");
  80
  81         boolean small = true;
  82         //boolean small = false;
  83
  84         if (small) {
  85             for(int i=0; i<2; i++) createShip("Alu");
  86             for(int i=0; i<1; i++) createShip("Memory");
  87             for(int i=0; i<2; i++) createShip("Fifo");
  88             createShip("Counter");
  89             createShip("CarrySaveAdder");
  90             createShip("Rotator");
  91             createShip("Lut3");
  92             createShip("Timer");
  93             createShip("DDR2");
  94             createShip("Dvi");
  95
  96         } else {
  97
  98             for(int i=0; i<3; i++)  createShip("Memory");
  99             for(int i=0; i<3; i++)  createShip("Alu");
 100             for(int i=0; i<2; i++)  createShip("Fifo");
 101             for(int i=0; i<14; i++) createShip("Counter");
 102
 103             /*
 104             // "really big" configuration: 138 docks
 105             for(int i=0; i<4; i++)  createShip("Alu");
 106             */
 107
 108             //createShip("CarrySaveAdder");
 109             //createShip("Rotator");
 110             //createShip("Lut3");
 111
 112             createShip("Timer");
 113             createShip("DDR2");
 114             createShip("Dvi");
 115         }
 116
 117         // for FifoShip
 118         new Module.InstantiatedModule(top, new FifoModule(8, WIDTH_WORD));
 119
 120         ArrayList dests   = new ArrayList<FabricElement>();
 121         ArrayList sources = new ArrayList<FabricElement>();
 122         for(FpgaShip ship : (Iterable<FpgaShip>)(Object)this) {
 123             for(Dock port : ship) {
 124                 if (port.isInputDock()) {
 125                     sources.add(((FpgaDock)port));
 126                     dests.add(port.getInstructionDestination());
 127                     dests.add(port.getDataDestination());
 128                 } else {
 129                     sources.add(((FpgaDock)port));
 130                     dests.add(port.getInstructionDestination());
 131                     dests.add(port.getDataDestination());
 132                 }
 133             }
 134             for(Module.SourcePort sp0 : ship.docklessPorts.values()) {
 135                 final Module.SourcePort sp = sp0;
 136                 sources.add(new FabricElement.AbstractFabricElement() {
 137                         private FabricElement upstream;
 138                         public int      getPathLength(FpgaDestination dest) { return upstream.getPathLength(dest); }
 139                         public FpgaPath getPath(FpgaDestination dest, BitVector signal) { return upstream.getPath(dest, signal); }
 140                         public void addOutput(FabricElement out, Module.Port outPort) {
 141                             this.upstream = out;
 142                             sp.connect((Module.SinkPort)outPort);
 143                         }
 144                     });
 145             }
 146         }
 147         FabricElement top_horn = mkNode((FabricElement[])dests.toArray(new FabricElement[0]), true);
 148         mkNode((FabricElement[])sources.toArray(new FabricElement[0]), false)
 149             .addOutput(top_horn, top_horn.getInputPort());
 150     }
 151
 152     public FabricElement mkNode(FabricElement[] ports, boolean is_horn) { return mkNode(ports, is_horn, 0, ports.length); }
 153     public FabricElement mkNode(FabricElement[] ports, boolean is_horn, int start, int end) {
 154         switch(end-start) {
 155             case 0: throw new RuntimeException("this should never happen");
 156             case 1: return ports[start];
 157             default: {
 158                 FabricElement leftPort  = mkNode(ports, is_horn,  start,         (end+start)/2);
 159                 FabricElement rightPort = mkNode(ports, is_horn,  (end+start)/2, end);
 160                 return is_horn
 161                     ? new HornModule.HornInstance(this, top,     leftPort, rightPort)
 162                     : new FunnelModule.FunnelInstance(this, top, leftPort, rightPort);
 163             }
 164         }
 165     }
 166
 167
 168     // Expand //////////////////////////////////////////////////////////////////////////////
 169
 170     public void expand(ShipDescription sd) {
 171         try {
 172             if (sd.getSection("fpga")==null) return;
 173             String filename = sd.getName().toLowerCase();
 174
 175             if (sd.getSection("ucf") != null) {
 176                 File outf = new File("build/fpga/"+filename+".ucf");
 177                 FileOutputStream out = new FileOutputStream(outf);
 178                 PrintWriter pw = new PrintWriter(out);
 179                 pw.println(sd.getSection("ucf"));
 180                 pw.flush();
 181                 pw.close();
 182             }
 183
 184             File outf = new File("build/fpga/"+filename+".v");
 185             new File(outf.getParent()).mkdirs();
 186             System.err.println("writing to " + outf);
 187             FileOutputStream out = new FileOutputStream(outf);
 188             PrintWriter pw = new PrintWriter(out);
 189
 190             pw.println("`define WORDWIDTH                "+WIDTH_WORD);
 191             pw.println("`define CODEBAG_SIZE_BITS        "+CBD_SIZE.valmaskwidth);
 192             pw.println();
 193
 194             for(DockDescription dd : sd.ports()) {
 195                 String name = dd.getName();
 196                 pw.println("`define "+name+"_full    ("+name+"_r && !"+name+"_a)");
 197                 pw.println("`define "+name+"_empty  (!"+name+"_r && !"+name+"_a)");
 198                 if (dd.isInputDock()) {
 199                     // gets stuck on colliding-tokens
 200                     //pw.println("`define drain_"+name+"  if ("+name+"_r && !"+name+"_a) "+name+"_a <= 1;");
 201
 202                     // gets stuck on colliding-tokens
 203                     //pw.println("`define drain_"+name+"  if ("+name+"_r) "+name+"_a <= 1;");
 204
 205                     // also gets stuck
 206                     //pw.println("`define drain_"+name+"  if (!"+name+"_a) "+name+"_a <= 1;");
 207                     pw.println("`define drain_"+name+"  "+name+"_a <= 1;");
 208                 } else {
 209                     pw.println("`define fill_"+name+"  "+name+"_r <= 1;");
 210                 }
 211             }
 212
 213             pw.print("`define reset ");
 214             for(DockDescription bb : sd.ports()) {
 215                 String bb_name = bb.getName();
 216                 if (bb.isInputDock()) pw.print(bb_name+"_a <= 1; ");
 217                 else                  pw.print(bb_name+"_r <= 0; ");
 218             }
 219             pw.println();
 220
 221             pw.print("`define cleanup ");
 222
 223             // output docks
 224             for(DockDescription dd : sd.ports())
 225                 if (!dd.isInputDock())
 226                     pw.print("if ( "+dd.getName()+"_r && "+dd.getName()+"_a) "+dd.getName()+"_r <= 0; ");
 227
 228             // input docks: if all inputs are flushing, drain them all
 229             pw.print("if (1");
 230             for(DockDescription bb : sd.ports())
 231                 if (bb.isInputDock())
 232                     pw.print(" && "+bb.getName()+"_f");
 233             pw.print(") begin ");
 234             for(DockDescription bb : sd.ports())
 235                 if (bb.isInputDock())
 236                     pw.print(bb.getName()+"_a <= 1; ");
 237
 238             // input docks: if no inputs are flushing, do normal stuff
 239             pw.print("end else if (1");
 240             for(DockDescription bb : sd.ports())
 241                 if (bb.isInputDock())
 242                     pw.print(" && !"+bb.getName()+"_f");
 243             pw.print(") begin ");
 244
 245             for(DockDescription bb : sd.ports())
 246                 if (bb.isInputDock())
 247                     pw.print("if (!"+bb.getName()+"_r_ && "+bb.getName()+"_a) "+bb.getName()+"_a <= 0; ");
 248
 249             // input docks: if some-but-not-all inputs are flushing, drain all non-flushing docks
 250             pw.print("end else begin ");
 251
 252             for(DockDescription bb : sd.ports())
 253                 if (bb.isInputDock()) {
 254                     pw.print("if (!"+bb.getName()+"_r && "+bb.getName()+"_a) "+bb.getName()+"_a <= 0; ");
 255                     pw.print("if ("+bb.getName()+"_r && !"+bb.getName()+"_a) "+bb.getName()+"_a <= 1; ");
 256                 }
 257
 258             pw.print(" end");
 259
 260             pw.println();
 261
 262             pw.println("module " + filename + "( clk, rst ");
 263             for(DockDescription bb : sd.ports()) {
 264                 String bb_name = bb.getName();
 265                 pw.print("        ");
 266                 if (bb.isInputDock()) {
 267                     pw.print(", " + bb_name+"_r_");
 268                     pw.print(", " + bb_name+"_a_");
 269                     pw.print(", " + bb_name+"_d");
 270                 } else {
 271                     pw.print(", " + bb_name+"_r_");
 272                     pw.print(", " + bb_name+"_a");
 273                     pw.print(", " + bb_name+"_d_");
 274                 }
 275                 pw.println();
 276             }
 277             for(PercolatedPort pp : sd.percolatedPorts) {
 278                 pw.print("    , ");
 279                 pw.println(pp.name);
 280             }
 281             pw.println("        );");
 282             pw.println();
 283             pw.println("    input clk;");
 284             pw.println("    input rst;");
 285             for(PercolatedPort pp : sd.percolatedPorts) {
 286                 switch(pp.type) {
 287                     case UP:    pw.print("output"); break;
 288                     case DOWN:  pw.print("input");  break;
 289                     case INOUT: pw.print("inout");  break;
 290                 }
 291                 pw.print("  ");
 292                 if (pp.width > 1)
 293                     pw.print("["+(pp.width-1)+":0]");
 294                 pw.print(" ");
 295                 pw.print(pp.name);
 296                 pw.println(";");
 297             }
 298
 299             for(DockDescription bb : sd.ports()) {
 300                 String bb_name = bb.getName();
 301                 int width = bb.isDockless() ? WIDTH_PACKET : WIDTH_WORD;
 302                 if (bb.isInputDock()) {
 303                     pw.println("        input   ["+width+":0] "+bb_name+"_d;");
 304                     pw.println("        input   "+bb_name+"_r_;");
 305                     pw.println("        wire    "+bb_name+"_r;");
 306                     pw.println("        assign  "+bb_name+"_r = "+bb_name+"_r_ & ~"+bb_name+"_d["+width+"];");
 307                     pw.println("        output  "+bb_name+"_a_;");
 308                     pw.println("        reg     "+bb_name+"_a;");
 309                     pw.println("        initial "+bb_name+"_a  = 0;");
 310                     pw.println("        wire    "+bb_name+"_f;");
 311                     pw.println("        assign  "+bb_name+"_f  = "+bb_name+"_r_ & "+bb_name+"_d["+width+"] && ~"+bb_name+"_a;");
 312                     pw.println("        assign  "+bb_name+"_a_ = "+bb_name+"_a;");
 313                 } else {
 314                     pw.println("        output  ["+width+":0] "+bb_name+"_d_;");
 315                     pw.println("        input   "+bb_name+"_a;");
 316                     pw.println("        output  "+bb_name+"_r_;");
 317                     pw.println("        reg     "+bb_name+"_r;");
 318                     pw.println("        initial "+bb_name+"_r  = 0;");
 319                     pw.println("        assign  "+bb_name+"_r_ = "+bb_name+"_r;");
 320                 }
 321                 pw.println();
 322             }
 323
 324             if (filename.equals("fifo")) {
 325                 pw.println("  wire in_a__;");
 326                 pw.println("  wire out_r__;");
 327                 pw.println("  fifo8x37 fifo8x37(clk, rst,");
 328                 pw.println("                    in_r,    in_a__, in_d,");
 329                 pw.println("                    out_r__, out_a,  out_d_);");
 330                 pw.println("  always @(posedge clk) begin");
 331                 pw.println("    if (rst) begin");
 332                 pw.println("      `reset");
 333                 pw.println("    end else begin");
 334                 pw.println("      `cleanup");
 335                 pw.println("      out_r <= out_r__;");
 336                 pw.println("      if (in_a__) in_a  <= 1;");
 337                 pw.println("    end");
 338                 pw.println("  end");
 339             } else {
 340                 pw.println(sd.getSection("fpga"));
 341             }
 342
 343             pw.println("endmodule");
 344
 345             pw.flush();
 346             pw.close();
 347         } catch (Exception e) { throw new RuntimeException(e); }
 348     }
 349
 350 }