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.*;
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;
19 public class Fpga extends FleetTwoFleet {
24 public LinkedHashMap<String,FpgaShip> ships = new LinkedHashMap<String,FpgaShip>();
25 public Iterator<Ship> iterator() { return (Iterator<Ship>)(Object)ships.values().iterator(); }
27 public Ship getShip(String type, int ordinal) {
29 if (s.getType().equals(type))
35 public static void main(String[] s) throws Exception {
36 new Fpga(new Module("main")).top.dump(s[0]);
39 pw = new PrintWriter(new OutputStreamWriter(new FileOutputStream(s[0]+"/timescale.v")));
40 pw.println("`timescale 1ns / 10ps");
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\"");
52 public Module getVerilogModule() { return top; }
54 public FleetProcess run(Instruction[] instructions) {
56 return new Client(this, "none", instructions);
57 } catch (Exception e) { throw new RuntimeException(e); }
60 protected BitVector getDestAddr(Path path) {
61 return ((FpgaPath)path).toBitVector();
64 // Setup //////////////////////////////////////////////////////////////////////////////
66 Ship createShip(String type) throws IOException {
67 ShipDescription sd = new ShipDescription(this, type, new BufferedReader(new InputStreamReader(new FileInputStream("ships/"+type+".ship"))));
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);
76 public Fpga() throws Exception { this(new Module("main")); }
77 public Fpga(Module top) throws Exception {
79 debugShip = createShip("Debug");
82 //boolean small = false;
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");
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");
104 // "really big" configuration: 138 docks
105 for(int i=0; i<4; i++) createShip("Alu");
108 //createShip("CarrySaveAdder");
109 //createShip("Rotator");
110 //createShip("Lut3");
118 new Module.InstantiatedModule(top, new FifoModule(8, WIDTH_WORD));
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());
129 sources.add(((FpgaDock)port));
130 dests.add(port.getInstructionDestination());
131 dests.add(port.getDataDestination());
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) {
142 sp.connect((Module.SinkPort)outPort);
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());
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) {
155 case 0: throw new RuntimeException("this should never happen");
156 case 1: return ports[start];
158 FabricElement leftPort = mkNode(ports, is_horn, start, (end+start)/2);
159 FabricElement rightPort = mkNode(ports, is_horn, (end+start)/2, end);
161 ? new HornModule.HornInstance(this, top, leftPort, rightPort)
162 : new FunnelModule.FunnelInstance(this, top, leftPort, rightPort);
168 // Expand //////////////////////////////////////////////////////////////////////////////
170 public void expand(ShipDescription sd) {
172 if (sd.getSection("fpga")==null) return;
173 String filename = sd.getName().toLowerCase();
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"));
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);
190 pw.println("`define WORDWIDTH "+WIDTH_WORD);
191 pw.println("`define CODEBAG_SIZE_BITS "+CBD_SIZE.valmaskwidth);
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;");
202 // gets stuck on colliding-tokens
203 //pw.println("`define drain_"+name+" if ("+name+"_r) "+name+"_a <= 1;");
206 //pw.println("`define drain_"+name+" if (!"+name+"_a) "+name+"_a <= 1;");
207 pw.println("`define drain_"+name+" "+name+"_a <= 1;");
209 pw.println("`define fill_"+name+" "+name+"_r <= 1;");
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; ");
221 pw.print("`define cleanup ");
224 for(DockDescription dd : sd.ports())
225 if (!dd.isInputDock())
226 pw.print("if ( "+dd.getName()+"_r && "+dd.getName()+"_a) "+dd.getName()+"_r <= 0; ");
228 // input docks: if all inputs are flushing, drain them all
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; ");
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 ");
245 for(DockDescription bb : sd.ports())
246 if (bb.isInputDock())
247 pw.print("if (!"+bb.getName()+"_r_ && "+bb.getName()+"_a) "+bb.getName()+"_a <= 0; ");
249 // input docks: if some-but-not-all inputs are flushing, drain all non-flushing docks
250 pw.print("end else begin ");
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; ");
262 pw.println("module " + filename + "( clk, rst ");
263 for(DockDescription bb : sd.ports()) {
264 String bb_name = bb.getName();
266 if (bb.isInputDock()) {
267 pw.print(", " + bb_name+"_r_");
268 pw.print(", " + bb_name+"_a_");
269 pw.print(", " + bb_name+"_d");
271 pw.print(", " + bb_name+"_r_");
272 pw.print(", " + bb_name+"_a");
273 pw.print(", " + bb_name+"_d_");
277 for(PercolatedPort pp : sd.percolatedPorts) {
283 pw.println(" input clk;");
284 pw.println(" input rst;");
285 for(PercolatedPort pp : sd.percolatedPorts) {
287 case UP: pw.print("output"); break;
288 case DOWN: pw.print("input"); break;
289 case INOUT: pw.print("inout"); break;
293 pw.print("["+(pp.width-1)+":0]");
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;");
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;");
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;");
340 pw.println(sd.getSection("fpga"));
343 pw.println("endmodule");
347 } catch (Exception e) { throw new RuntimeException(e); }