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(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");
81 //boolean small = true;
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<2; 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<11; i++) createShip("Counter");
104 for(int i=0; i<3; i++) createShip("Memory");
105 for(int i=0; i<3; i++) createShip("Alu");
106 for(int i=0; i<2; i++) createShip("Fifo");
107 for(int i=0; i<14; i++) createShip("Counter");
109 // "really big" configuration: 138 docks
110 for(int i=0; i<4; i++) createShip("Alu");
113 //createShip("CarrySaveAdder");
114 //createShip("Rotator");
115 //createShip("Lut3");
123 new Module.InstantiatedModule(top, new FifoModule(8, WIDTH_WORD));
125 ArrayList dests = new ArrayList<FabricElement>();
126 ArrayList sources = new ArrayList<FabricElement>();
127 for(FpgaShip ship : (Iterable<FpgaShip>)(Object)this) {
128 for(Dock port : ship) {
129 if (port.isInputDock()) {
130 sources.add(((FpgaDock)port));
131 dests.add(port.getInstructionDestination());
132 dests.add(port.getDataDestination());
134 sources.add(((FpgaDock)port));
135 dests.add(port.getInstructionDestination());
136 dests.add(port.getDataDestination());
139 for(Module.SourcePort sp0 : ship.docklessPorts.values()) {
140 final Module.SourcePort sp = sp0;
141 sources.add(new FabricElement.AbstractFabricElement() {
142 private FabricElement upstream;
143 public FpgaPath getPath(FpgaDestination dest, BitVector signal) { return upstream.getPath(dest, signal); }
144 public void addOutput(FabricElement out, Module.Port outPort) {
146 sp.connect((Module.SinkPort)outPort);
151 FabricElement top_horn = mkNode((FabricElement[])dests.toArray(new FabricElement[0]), true);
152 mkNode((FabricElement[])sources.toArray(new FabricElement[0]), false)
153 .addOutput(top_horn, top_horn.getInputPort());
156 public FabricElement mkNode(FabricElement[] ports, boolean is_horn) { return mkNode(ports, is_horn, 0, ports.length); }
157 public FabricElement mkNode(FabricElement[] ports, boolean is_horn, int start, int end) {
159 case 0: throw new RuntimeException("this should never happen");
160 case 1: return ports[start];
162 FabricElement leftPort = mkNode(ports, is_horn, start, (end+start)/2);
163 FabricElement rightPort = mkNode(ports, is_horn, (end+start)/2, end);
165 ? new HornModule.HornInstance(this, top, leftPort, rightPort)
166 : new FunnelModule.FunnelInstance(this, top, leftPort, rightPort);
172 // Expand //////////////////////////////////////////////////////////////////////////////
174 public void expand(ShipDescription sd) {
176 if (sd.getSection("fpga")==null) return;
177 String filename = sd.getName().toLowerCase();
179 if (sd.getSection("ucf") != null) {
180 File outf = new File("build/fpga/"+filename+".ucf");
181 FileOutputStream out = new FileOutputStream(outf);
182 PrintWriter pw = new PrintWriter(out);
183 pw.println(sd.getSection("ucf"));
188 File outf = new File("build/fpga/"+filename+".v");
189 new File(outf.getParent()).mkdirs();
190 System.err.println("writing to " + outf);
191 FileOutputStream out = new FileOutputStream(outf);
192 PrintWriter pw = new PrintWriter(out);
194 pw.println("`define WORDWIDTH "+WIDTH_WORD);
195 pw.println("`define CODEBAG_SIZE_BITS "+CBD_SIZE.valmaskwidth);
198 for(DockDescription dd : sd.ports()) {
199 String name = dd.getName();
200 pw.println("`define "+name+"_full ("+name+"_r && !"+name+"_a)");
201 pw.println("`define "+name+"_empty (!"+name+"_r && !"+name+"_a)");
202 if (dd.isInputDock()) {
203 // gets stuck on colliding-tokens
204 //pw.println("`define drain_"+name+" if ("+name+"_r && !"+name+"_a) "+name+"_a <= 1;");
206 // gets stuck on colliding-tokens
207 //pw.println("`define drain_"+name+" if ("+name+"_r) "+name+"_a <= 1;");
210 //pw.println("`define drain_"+name+" if (!"+name+"_a) "+name+"_a <= 1;");
211 pw.println("`define drain_"+name+" "+name+"_a <= 1;");
213 pw.println("`define fill_"+name+" "+name+"_r <= 1;");
217 pw.print("`define reset ");
218 for(DockDescription bb : sd.ports()) {
219 String bb_name = bb.getName();
220 if (bb.isInputDock()) pw.print(bb_name+"_a <= 1; ");
221 else pw.print(bb_name+"_r <= 0; ");
225 pw.print("`define cleanup ");
228 for(DockDescription dd : sd.ports())
229 if (!dd.isInputDock())
230 pw.print("if ( "+dd.getName()+"_r && "+dd.getName()+"_a) "+dd.getName()+"_r <= 0; ");
232 // input docks: if all inputs are flushing, drain them all
234 for(DockDescription bb : sd.ports())
235 if (bb.isInputDock())
236 pw.print(" && "+bb.getName()+"_f");
237 pw.print(") begin ");
238 for(DockDescription bb : sd.ports())
239 if (bb.isInputDock())
240 pw.print(bb.getName()+"_a <= 1; ");
242 // input docks: if no inputs are flushing, do normal stuff
243 pw.print("end else if (1");
244 for(DockDescription bb : sd.ports())
245 if (bb.isInputDock())
246 pw.print(" && !"+bb.getName()+"_f");
247 pw.print(") begin ");
249 for(DockDescription bb : sd.ports())
250 if (bb.isInputDock())
251 pw.print("if (!"+bb.getName()+"_r_ && "+bb.getName()+"_a) "+bb.getName()+"_a <= 0; ");
253 // input docks: if some-but-not-all inputs are flushing, drain all non-flushing docks
254 pw.print("end else begin ");
256 for(DockDescription bb : sd.ports())
257 if (bb.isInputDock()) {
258 pw.print("if (!"+bb.getName()+"_r && "+bb.getName()+"_a) "+bb.getName()+"_a <= 0; ");
259 pw.print("if ("+bb.getName()+"_r && !"+bb.getName()+"_a) "+bb.getName()+"_a <= 1; ");
266 pw.println("module " + filename + "( clk, rst ");
267 for(DockDescription bb : sd.ports()) {
268 String bb_name = bb.getName();
270 if (bb.isInputDock()) {
271 pw.print(", " + bb_name+"_r_");
272 pw.print(", " + bb_name+"_a_");
273 pw.print(", " + bb_name+"_d");
275 pw.print(", " + bb_name+"_r_");
276 pw.print(", " + bb_name+"_a");
277 pw.print(", " + bb_name+"_d_");
281 for(PercolatedPort pp : sd.percolatedPorts) {
287 pw.println(" input clk;");
288 pw.println(" input rst;");
289 for(PercolatedPort pp : sd.percolatedPorts) {
291 case UP: pw.print("output"); break;
292 case DOWN: pw.print("input"); break;
293 case INOUT: pw.print("inout"); break;
297 pw.print("["+(pp.width-1)+":0]");
303 for(DockDescription bb : sd.ports()) {
304 String bb_name = bb.getName();
305 int width = bb.isDockless() ? WIDTH_PACKET : WIDTH_WORD;
306 if (bb.isInputDock()) {
307 pw.println(" input ["+width+":0] "+bb_name+"_d;");
308 pw.println(" input "+bb_name+"_r_;");
309 pw.println(" wire "+bb_name+"_r;");
310 pw.println(" assign "+bb_name+"_r = "+bb_name+"_r_ & ~"+bb_name+"_d["+width+"];");
311 pw.println(" output "+bb_name+"_a_;");
312 pw.println(" reg "+bb_name+"_a;");
313 pw.println(" initial "+bb_name+"_a = 0;");
314 pw.println(" wire "+bb_name+"_f;");
315 pw.println(" assign "+bb_name+"_f = "+bb_name+"_r_ & "+bb_name+"_d["+width+"] && ~"+bb_name+"_a;");
316 pw.println(" assign "+bb_name+"_a_ = "+bb_name+"_a;");
318 pw.println(" output ["+width+":0] "+bb_name+"_d_;");
319 pw.println(" input "+bb_name+"_a;");
320 pw.println(" output "+bb_name+"_r_;");
321 pw.println(" reg "+bb_name+"_r;");
322 pw.println(" initial "+bb_name+"_r = 0;");
323 pw.println(" assign "+bb_name+"_r_ = "+bb_name+"_r;");
328 if (filename.equals("fifo")) {
329 pw.println(" wire in_a__;");
330 pw.println(" wire out_r__;");
331 pw.println(" fifo8x37 fifo8x37(clk, rst,");
332 pw.println(" in_r, in_a__, in_d,");
333 pw.println(" out_r__, out_a, out_d_);");
334 pw.println(" always @(posedge clk) begin");
335 pw.println(" if (rst) begin");
336 pw.println(" `reset");
337 pw.println(" end else begin");
338 pw.println(" `cleanup");
339 pw.println(" out_r <= out_r__;");
340 pw.println(" if (in_a__) in_a <= 1;");
344 pw.println(sd.getSection("fpga"));
347 pw.println("endmodule");
351 } catch (Exception e) { throw new RuntimeException(e); }